eea6121ac0
* section.c (struct sec): Rename "_cooked_size" to "size".
Rename "_raw_size" to "rawsize".
(STD_SECTION): Adjust comments.
(bfd_set_section_size, bfd_get_section_contents): Use size.
(bfd_malloc_and_get_section): New function.
* bfd-in.h (bfd_section_size, bfd_get_section_size): Use size.
* coff-sh.c (sh_relax_section): Alloc coff_section_data struct early.
Correctly free reloc and contents memory.
* elf-eh-frame.c (_bfd_elf_discard_section_eh_frame): Delete FIXME
and fake CIE now that we can shink section size to zero.
(_bfd_elf_write_section_eh_frame): Likewise..
* elf32-ppc.c (ppc_elf_relax_section): Delay reading section contents.
* elf-m10300.c (mn10300_elf_final_link_relocate): Don't use
_bfd_stab_section_offset. Use _bfd_elf_section_offset.
* stabs.c (_bfd_stab_section_offset_): Remove unused args and
unneeded indirection.
* elf.c (_bfd_elf_section_offset): .. and update call.
* libbfd-in.h (_bfd_stab_section_offset): Update prototype.
* libbfd.h: Regenerate.
* bfd-in2.h: Regenerate.
Replace occurrences of "_raw_size" and "_cooked_size" in most places
with "size". Set new "rawsize" for stabs, eh_frame, and SEC_MERGE
sections. Use "rawsize", if non-zero, for bfd_get_section_contents
calls if the section might be a stabs, eh_frame, or SEC_MERGE section.
Similarly use "rawsize", if non-zero, in reloc functions to validate
reloc addresses. Use new bfd_malloc_and_get_section in most places
where bfd_get_section_contents was called. Expand all occurrences of
bfd_section_size and bfd_get_section_size. Rename "raw_size" var in
grok_prstatus and similar functions to "size".
* aix386-core.c (aix386_core_file_p): ..
* aix5ppc-core.c (xcoff64_core_p): ..
* aout-adobe.c (aout_adobe_callback, aout_adobe_write_object_contents,
aout_adobe_set_section_contents): ..
* aout-target.h (callback): ..
* aout-tic30.c (tic30_aout_callback, tic30_aout_final_link_relocate,
MY_bfd_final_link): ..
* aoutf1.h (sunos4_core_file_p): ..
* aoutx.h (some_aout_object_p, adjust_o_magic, adjust_z_magic,
adjust_n_magic, adjust_sizes_and_vmas, translate_from_native_sym_flags,
final_link, aout_link_input_section): ..
* binary.c (binary_object_p, binary_canonicalize_symtab,
binary_set_section_contents): ..
* bout.c (b_out_callback, b_out_write_object_contents,
b_out_set_section_contents, b_out_bfd_relax_section,
b_out_bfd_get_relocated_section_contents): ..
* cisco-core.c (cisco_core_file_validate): ..
* coff-alpha.c (alpha_ecoff_object_p,
alpha_ecoff_get_relocated_section_conten, alpha_relocate_section): ..
* coff-arm.c (coff_arm_relocate_section,
bfd_arm_allocate_interworking_sections): ..
* coff-h8300.c (h8300_reloc16_extra_cases,
h8300_bfd_link_add_symbols): ..
* coff-mips.c (mips_refhi_reloc, mips_gprel_reloc): ..
* coff-ppc.c (coff_ppc_relocate_section, ppc_allocate_toc_section,
ppc_bfd_coff_final_link): ..
* coff-rs6000.c (xcoff_reloc_type_br, xcoff_ppc_relocate_section): ..
* coff-sh.c (sh_relax_section, sh_relax_delete_bytes,
sh_align_loads, sh_coff_get_relocated_section_contents): ..
* coff64-rs6000.c (xcoff64_write_object_contents,
xcoff64_reloc_type_br, xcoff64_ppc_relocate_section): ..
* coffcode.h (coff_compute_section_file_positions,
coff_write_object_contents): ..
* coffgen.c (make_a_section_from_file, coff_write_symbols,
coff_section_symbol, build_debug_section): ..
* cofflink.c (coff_link_add_symbols, _bfd_coff_final_link,
process_embedded_commands, _bfd_coff_link_input_bfd,
_bfd_coff_write_global_sym): ..
* cpu-arm.c (bfd_arm_update_notes, bfd_arm_get_mach_from_notes): ..
* cpu-ns32k.c (do_ns32k_reloc, _bfd_ns32k_final_link_relocate): ..
* dwarf1.c (parse_line_table, _bfd_dwarf1_find_nearest_line): ..
* dwarf2.c (read_indirect_string, read_abbrevs, decode_line_info,
_bfd_dwarf2_find_nearest_line): ..
* ecoff.c (bfd_debug_section, ecoff_set_symbol_info,
ecoff_compute_section_file_positions,
_bfd_ecoff_write_object_contents, ecoff_indirect_link_order): ..
* elf-eh-frame.c (_bfd_elf_discard_section_eh_frame,
_bfd_elf_discard_section_eh_frame_hdr,
_bfd_elf_maybe_strip_eh_frame_hdr, _bfd_elf_eh_frame_section_offset,
_bfd_elf_write_section_eh_frame,
_bfd_elf_write_section_eh_frame_hdr): ..
* elf-hppa.h (elf_hppa_sort_unwind): ..
* elf-m10200.c (mn10200_elf_relax_section,
mn10200_elf_relax_delete_bytes,
mn10200_elf_get_relocated_section_contents): ..
* elf-m10300.c (_bfd_mn10300_elf_create_got_section,
mn10300_elf_check_relocs, mn10300_elf_relax_section,
mn10300_elf_relax_delete_bytes,
mn10300_elf_get_relocated_section_contents,
_bfd_mn10300_elf_adjust_dynamic_symbol,
_bfd_mn10300_elf_discard_copies,
_bfd_mn10300_elf_size_dynamic_sections,
_bfd_mn10300_elf_finish_dynamic_sections): ..
* elf.c (_bfd_elf_print_private_bfd_data, bfd_elf_get_bfd_needed_list,
_bfd_elf_make_section_from_phdr, elf_fake_sections,
bfd_elf_set_group_contents, map_sections_to_segments,
elf_sort_sections, assign_file_positions_for_segments,
SECTION_SIZE, copy_private_bfd_data,
_bfd_elf_get_dynamic_reloc_upper_bound,
_bfd_elf_canonicalize_dynamic_reloc, elfcore_maybe_make_sect,
_bfd_elfcore_make_pseudosection, elfcore_grok_prstatus,
elfcore_grok_lwpstatus, elfcore_grok_win32pstatus,
elfcore_grok_note, elfcore_grok_nto_status, elfcore_grok_nto_gregs,
_bfd_elf_rel_local_sym, _bfd_elf_get_synthetic_symtab): ..
* elf32-arm.h (bfd_elf32_arm_allocate_interworking_sect,
bfd_elf32_arm_process_before_allocation,
elf32_arm_adjust_dynamic_symbol, allocate_dynrelocs,
elf32_arm_size_dynamic_sections, elf32_arm_finish_dynamic_sections,
elf32_arm_write_section): ..
* elf32-cris.c (cris_elf_grok_prstatus,
elf_cris_finish_dynamic_sections, cris_elf_gc_sweep_hook,
elf_cris_adjust_gotplt_to_got, elf_cris_adjust_dynamic_symbol,
cris_elf_check_relocs, elf_cris_size_dynamic_sections,
elf_cris_discard_excess_dso_dynamics,
elf_cris_discard_excess_program_dynamics): ..
* elf32-d30v.c (bfd_elf_d30v_reloc, bfd_elf_d30v_reloc_21): ..
* elf32-dlx.c (_bfd_dlx_elf_hi16_reloc): ..
* elf32-frv.c (_frvfdpic_add_dyn_reloc, _frvfdpic_add_rofixup,
_frv_create_got_section, _frvfdpic_assign_plt_entries,
elf32_frvfdpic_size_dynamic_sections,
elf32_frvfdpic_modify_segment_map,
elf32_frvfdpic_finish_dynamic_sections): ..
* elf32-h8300.c (elf32_h8_relax_section, elf32_h8_relax_delete_bytes,
elf32_h8_get_relocated_section_contents): ..
* elf32-hppa.c (hppa_build_one_stub, hppa_size_one_stub,
elf32_hppa_adjust_dynamic_symbol, allocate_plt_static,
allocate_dynrelocs, elf32_hppa_size_dynamic_sections, group_sections,
elf32_hppa_size_stubs, elf32_hppa_set_gp, elf32_hppa_build_stubs,
elf32_hppa_finish_dynamic_sections): ..
* elf32-i370.c (i370_elf_adjust_dynamic_symbol,
i370_elf_size_dynamic_sections, i370_elf_check_relocs,
i370_elf_finish_dynamic_sections): ..
* elf32-i386.c (elf_i386_grok_prstatus, elf_i386_adjust_dynamic_symbol,
allocate_dynrelocs, elf_i386_size_dynamic_sections,
elf_i386_relocate_section, elf_i386_finish_dynamic_sections): ..
* elf32-i860.c (i860_howto_pc26_reloc, i860_howto_pc16_reloc,
i860_howto_highadj_reloc, i860_howto_splitn_reloc): ..
* elf32-ip2k.c (ip2k_is_switch_table_128,
ip2k_relax_switch_table_128, ip2k_is_switch_table_256,
ip2k_relax_switch_table_256, ip2k_elf_relax_section,
adjust_all_relocations, ip2k_elf_relax_delete_bytes): ..
* elf32-m32r.c (m32r_elf_do_10_pcrel_reloc, m32r_elf_hi16_reloc,
m32r_elf_generic_reloc, m32r_elf_adjust_dynamic_symbol,
allocate_dynrelocs, m32r_elf_size_dynamic_sections,
m32r_elf_relocate_section, m32r_elf_finish_dynamic_sections,
m32r_elf_relax_section, m32r_elf_relax_delete_bytes,
m32r_elf_get_relocated_section_contents): ..
* elf32-m68hc11.c (m68hc11_elf_build_one_stub,
m68hc11_elf_size_one_stub, m68hc11_elf_relax_section,
m68hc11_elf_relax_delete_bytes): ..
* elf32-m68hc12.c (m68hc12_elf_build_one_stub,
m68hc12_elf_size_one_stub): ..
* elf32-m68hc1x.c (elf32_m68hc11_size_stubs,
elf32_m68hc11_build_stubs, m68hc11_elf_special_reloc): ..
* elf32-m68k.c (elf_m68k_check_relocs, elf_m68k_gc_sweep_hook,
elf_m68k_adjust_dynamic_symbol, elf_m68k_size_dynamic_sections,
elf_m68k_discard_copies, elf_m68k_finish_dynamic_sections): ..
* elf32-mips.c (gprel32_with_gp, mips16_gprel_reloc,
elf32_mips_grok_prstatus): ..
* elf32-or32.c (or32_elf_consth_reloc): ..
* elf32-ppc.c (ppc_elf_relax_section, ppc_elf_addr16_ha_reloc,
elf_create_pointer_linker_section, ppc_elf_create_linker_section,
ppc_elf_additional_program_headers, ppc_elf_adjust_dynamic_symbol,
allocate_dynrelocs, ppc_elf_size_dynamic_sections,
ppc_elf_finish_dynamic_sections, ppc_elf_grok_prstatus,
ppc_elf_final_write_processing): ..
* elf32-s390.c (s390_elf_ldisp_reloc, elf_s390_adjust_dynamic_symbol,
allocate_dynrelocs, elf_s390_size_dynamic_sections,
elf_s390_finish_dynamic_sections, elf_s390_grok_prstatus): ..
* elf32-sh.c (sh_elf_reloc_loop, sh_elf_relax_section,
sh_elf_relax_delete_bytes, sh_elf_align_loads,
sh_elf_adjust_dynamic_symbol, allocate_dynrelocs,
sh_elf_size_dynamic_sections, sh_elf_get_relocated_section_contents,
sh_elf_finish_dynamic_sections, elf32_shlin_grok_prstatus): ..
* elf32-sh64-com.c (sh64_address_in_cranges,
sh64_get_contents_type): ..
* elf32-sh64.c (sh64_find_section_for_address,
sh64_elf_final_write_processing): ..
* elf32-sparc.c (sparc_elf_wdisp16_reloc, sparc_elf_hix22_reloc,
sparc_elf_lox10_reloc, elf32_sparc_adjust_dynamic_symbol,
allocate_dynrelocs, elf32_sparc_size_dynamic_sections,
elf32_sparc_relocate_section, elf32_sparc_finish_dynamic_sections): ..
* elf32-v850.c (v850_elf_reloc, v850_elf_relax_section): ..
* elf32-vax.c (elf_vax_check_relocs, elf_vax_adjust_dynamic_symbol,
elf_vax_size_dynamic_sections, elf_vax_discard_copies,
elf_vax_instantiate_got_entries, elf_vax_relocate_section,
elf_vax_finish_dynamic_sections): ..
* elf32-xstormy16.c (xstormy16_elf_24_reloc,
xstormy16_elf_check_relocs, xstormy16_relax_plt_check,
xstormy16_elf_relax_section, xstormy16_elf_always_size_sections,
xstormy16_elf_finish_dynamic_sections): ..
* elf32-xtensa.c (xtensa_read_table_entries,
elf_xtensa_allocate_got_size, elf_xtensa_allocate_local_got_size,
elf_xtensa_size_dynamic_sections, elf_xtensa_do_reloc,
bfd_elf_xtensa_reloc, elf_xtensa_relocate_section,
elf_xtensa_combine_prop_entries, elf_xtensa_finish_dynamic_sections,
elf_xtensa_discard_info_for_section, elf_xtensa_grok_prstatus,
get_relocation_opcode, retrieve_contents, find_relaxable_sections,
collect_source_relocs, is_resolvable_asm_expansion, remove_literals,
relax_section, shrink_dynamic_reloc_sections, relax_property_section,
xtensa_callback_required_dependence): ..
* elf64-alpha.c (elf64_alpha_reloc_gpdisp, elf64_alpha_relax_section,
elf64_alpha_check_relocs, elf64_alpha_adjust_dynamic_symbol,
elf64_alpha_calc_got_offsets_for_symbol, elf64_alpha_calc_got_offsets,
elf64_alpha_size_plt_section, elf64_alpha_size_plt_section_1,
elf64_alpha_always_size_sections, elf64_alpha_calc_dynrel_sizes,
elf64_alpha_size_rela_got_section, elf64_alpha_size_rela_got_1,
elf64_alpha_size_dynamic_sections, elf64_alpha_emit_dynrel,
elf64_alpha_finish_dynamic_sections, elf64_alpha_final_link): ..
* elf64-hppa.c (allocate_dynrel_entries,
elf64_hppa_size_dynamic_sections,
elf64_hppa_finish_dynamic_sections): ..
* elf64-mips.c (mips_elf64_gprel32_reloc, mips16_gprel_reloc,
mips_elf64_canonicalize_dynamic_reloc, mips_elf64_slurp_reloc_table,
elf64_mips_grok_prstatus): ..
* elf64-mmix.c (mmix_elf_perform_relocation, mmix_elf_reloc,
mmix_elf_relocate_section, mmix_elf_final_link,
mmix_set_relaxable_size, _bfd_mmix_after_linker_allocation,
mmix_elf_relax_section, mmix_elf_get_section_contents): ..
* elf64-ppc.c (ppc64_elf_object_p, ppc64_elf_grok_prstatus,
ppc64_elf_check_relocs, ppc64_elf_func_desc_adjust,
ppc64_elf_adjust_dynamic_symbol, ppc64_elf_edit_opd,
allocate_dynrelocs, ppc64_elf_size_dynamic_sections,
ppc_build_one_stub, ppc_size_one_stub, ppc64_elf_next_toc_section,
toc_adjusting_stub_needed, group_sections, ppc64_elf_size_stubs,
ppc64_elf_build_stubs, ppc64_elf_relocate_section,
ppc64_elf_finish_dynamic_sections): ..
* elf64-s390.c (s390_elf_ldisp_reloc, elf_s390_adjust_dynamic_symbol,
allocate_dynrelocs, elf_s390_size_dynamic_sections,
elf_s390_finish_dynamic_sections): ..
* elf64-sh64.c (sh_elf64_get_relocated_section_contents,
sh_elf64_check_relocs, sh64_elf64_adjust_dynamic_symbol,
sh64_elf64_discard_copies, sh64_elf64_size_dynamic_sections,
sh64_elf64_finish_dynamic_sections): ..
* elf64-sparc.c (sparc64_elf_slurp_reloc_table, init_insn_reloc,
sparc64_elf_check_relocs, sparc64_elf_adjust_dynamic_symbol,
sparc64_elf_size_dynamic_sections, sparc64_elf_relocate_section,
sparc64_elf_finish_dynamic_symbol,
sparc64_elf_finish_dynamic_sections): ..
* elf64-x86-64.c (elf64_x86_64_grok_prstatus,
elf64_x86_64_adjust_dynamic_symbol, allocate_dynrelocs,
elf64_x86_64_size_dynamic_sections, elf64_x86_64_relocate_section,
elf64_x86_64_finish_dynamic_sections): ..
* elfarm-nabi.c (elf32_arm_nabi_grok_prstatus): ..
* elfcode.h (elf_slurp_reloc_table): ..
* elflink.c (_bfd_elf_create_got_section, elf_add_dt_needed_tag,
elf_finalize_dynstr, elf_link_add_object_symbols,
bfd_elf_size_dynamic_sections, elf_link_sort_relocs,
elf_link_input_bfd, bfd_elf_final_link, bfd_elf_discard_info): ..
* elfn32-mips.c (gprel32_with_gp, mips16_gprel_reloc,
elf32_mips_grok_prstatus): ..
* elfxx-ia64.c (elfNN_ia64_relax_section, allocate_dynrel_entries,
elfNN_ia64_size_dynamic_sections, elfNN_ia64_install_dyn_reloc,
elfNN_ia64_choose_gp, elfNN_ia64_final_link,
elfNN_ia64_finish_dynamic_sections): ..
* elfxx-mips.c (mips_elf_create_procedure_table,
mips_elf_check_mips16_stubs, _bfd_mips_elf_gprel16_with_gp,
_bfd_mips_elf_hi16_reloc, _bfd_mips_elf_generic_reloc,
mips_elf_global_got_index, mips_elf_multi_got,
mips_elf_create_compact_rel_section, mips_elf_calculate_relocation,
mips_elf_allocate_dynamic_relocations,
mips_elf_create_dynamic_relocation, _bfd_mips_elf_fake_sections,
_bfd_mips_relax_section, _bfd_mips_elf_adjust_dynamic_symbol,
_bfd_mips_elf_always_size_sections,
_bfd_mips_elf_size_dynamic_sections,
_bfd_mips_elf_finish_dynamic_symbol,
_bfd_mips_elf_finish_dynamic_sections,
_bfd_mips_elf_modify_segment_map, _bfd_mips_elf_discard_info,
_bfd_mips_elf_write_section, _bfd_mips_elf_set_section_contents,
_bfd_elf_mips_get_relocated_section_contents,
_bfd_mips_elf_final_link, _bfd_mips_elf_merge_private_bfd_data): ..
* hp300hpux.c (callback): ..
* hppabsd-core.c (make_bfd_asection): ..
* hpux-core.c (make_bfd_asection): ..
* i386linux.c (linux_link_create_dynamic_sections,
bfd_i386linux_size_dynamic_sections, linux_finish_dynamic_link): ..
* i386msdos.c (msdos_write_object_contents): ..
* i386os9k.c (os9k_callback, os9k_write_object_contents,
os9k_set_section_contents): ..
* ieee.c (parse_expression, ieee_slurp_external_symbols,
ieee_slurp_sections, ieee_slurp_debug, ieee_slurp_section_data,
ieee_write_section_part, do_with_relocs, do_as_repeat,
do_without_relocs, ieee_write_debug_part, init_for_output,
ieee_set_section_contents): ..
* ihex.c (ihex_scan, ihex_read_section, ihex_get_section_contents): ..
* irix-core.c (do_sections, make_bfd_asection): ..
* libaout.h (aout_section_merge_with_text_p): ..
* libbfd.c (_bfd_generic_get_section_contents,
_bfd_generic_get_section_contents_in_window): ..
* linker.c (default_indirect_link_order): ..
* lynx-core.c (make_bfd_asection): ..
* m68klinux.c (linux_link_create_dynamic_sections,
bfd_m68klinux_size_dynamic_sections, linux_finish_dynamic_link): ..
* mach-o.c (bfd_mach_o_make_bfd_section,
bfd_mach_o_scan_read_dylinker, bfd_mach_o_scan_read_dylib,
bfd_mach_o_scan_read_thread, bfd_mach_o_scan_read_symtab,
bfd_mach_o_scan_read_segment): ..
* merge.c (_bfd_add_merge_section, record_section, merge_strings,
_bfd_merge_sections): ..
* mmo.c (mmo_find_sec_w_addr, mmo_get_spec_section, mmo_get_loc,
mmo_map_set_sizes, mmo_canonicalize_symtab,
mmo_internal_write_section, mmo_write_object_contents): ..
* netbsd-core.c (netbsd_core_file_p): ..
* nlm32-alpha.c (nlm_alpha_read_reloc, nlm_alpha_write_import,
nlm_alpha_set_public_section): ..
* nlm32-ppc.c (nlm_powerpc_read_reloc, nlm_powerpc_write_reloc): ..
* nlm32-sparc.c (nlm_sparc_write_import): ..
* nlmcode.h (add_bfd_section, nlm_swap_auxiliary_headers_in,
nlm_compute_section_file_positions): ..
* oasys.c (oasys_object_p, oasys_slurp_section_data,
oasys_write_sections, oasys_write_data, oasys_set_section_contents): ..
* opncls.c (get_debug_link_info): ..
* osf-core.c (make_bfd_asection): ..
* pdp11.c (some_aout_object_p, adjust_o_magic, adjust_z_magic,
adjust_n_magic, adjust_sizes_and_vmas, squirt_out_relocs,
final_link, aout_link_input_section): ..
* peXXigen.c (_bfd_XXi_swap_sym_in, _bfd_XXi_swap_aouthdr_out,
pe_print_idata, pe_print_edata, pe_print_pdata, pe_print_reloc): ..
* pef.c (bfd_pef_make_bfd_section, bfd_pef_print_loader_section,
bfd_pef_scan_start_address, bfd_pef_parse_symbols): ..
* ppcboot.c (ppcboot_object_p, ppcboot_canonicalize_symtab): ..
* ptrace-core.c (ptrace_unix_core_file_p): ..
* reloc.c (bfd_perform_relocation, bfd_install_relocation,
_bfd_final_link_relocate, bfd_generic_relax_section,
bfd_generic_get_relocated_section_contents): ..
* reloc16.c (bfd_coff_reloc16_relax_section,
bfd_coff_reloc16_get_relocated_section_c): ..
* riscix.c (riscix_some_aout_object_p): ..
* rs6000-core.c (read_hdr, make_bfd_asection): ..
* sco5-core.c (make_bfd_asection): ..
* simple.c (bfd_simple_get_relocated_section_contents): ..
* som.c (som_object_setup, setup_sections, som_prep_headers,
som_write_fixups, som_begin_writing, bfd_section_from_som_symbol,
som_set_reloc_info, som_get_section_contents,
som_bfd_link_split_section): ..
* sparclinux.c (linux_link_create_dynamic_sections,
bfd_sparclinux_size_dynamic_sections, linux_finish_dynamic_link): ..
* srec.c (srec_scan, srec_read_section, srec_get_section_contents): ..
* stabs.c (_bfd_link_section_stabs, _bfd_discard_section_stabs,
_bfd_write_stab_strings, _bfd_stab_section_offset): ..
* sunos.c (sunos_read_dynamic_info, sunos_create_dynamic_sections,
bfd_sunos_size_dynamic_sections, sunos_scan_std_relocs,
sunos_scan_ext_relocs, sunos_scan_dynamic_symbol,
sunos_write_dynamic_symbol, sunos_check_dynamic_reloc,
sunos_finish_dynamic_link): ..
* syms.c (_bfd_stab_section_find_nearest_line): ..
* tekhex.c (first_phase, tekhex_set_section_contents,
tekhex_write_object_contents): ..
* trad-core.c (trad_unix_core_file_p): ..
* versados.c (process_esd, process_otr, process_otr): ..
* vms-gsd.c (_bfd_vms_slurp_gsd, _bfd_vms_write_gsd): ..
* vms-misc.c (add_new_contents): ..
* vms-tir.c (check_section, new_section, _bfd_vms_write_tir): ..
* vms.c (vms_set_section_contents): ..
* xcofflink.c (xcoff_get_section_contents, xcoff_link_add_symbols,
xcoff_sweep, bfd_xcoff_size_dynamic_sections, xcoff_build_ldsyms,
_bfd_xcoff_bfd_final_link, xcoff_link_input_bfd): ..
* xsym.c (bfd_sym_scan): .. See above.
binutils/
* objcopy.c (copy_section): Don't set _cooked_size.
include/
* bfdlink.h (struct bfd_link_order): Update comment.
ld/
* ldlang.c (print_output_section_statement): Don't print size before
relaxation.
(IGNORE_SECTION): Remove bfd arg. Update all callers.
* ldexp.c (fold_name): .. See below.
* ldlang.c (section_already_linked, print_output_section_statement,
print_input_section, insert_pad, size_input_section,
lang_check_section_addresses, lang_size_sections_1,
lang_size_sections, lang_do_assignments_1, lang_set_startof,
lang_one_common, lang_reset_memory_regions, lang_process,
lang_abs_symbol_at_end_of, lang_do_version_exports_section): ..
* ldwrite.c (build_link_order, clone_section, ds, split_sections): ..
* pe-dll.c (process_def_file, generate_reloc): ..
* emultempl/elf32.em (gld${EMULATION_NAME}_find_statement_assignment,
gld${EMULATION_NAME}_before_allocation): ..
* emultempl/mmix-elfnmmo.em (mmix_after_allocation): ..
* emultempl/sh64elf.em (sh64_elf_${EMULATION_NAME}_before_allocation,
sh64_elf_${EMULATION_NAME}_after_allocation): ..
* emultempl/sunos.em (gld${EMULATION_NAME}_before_allocation): ..
* emultempl/xtensaelf.em (ld_assign_relative_paged_dot,
ld_local_file_relocations_fit, ld_xtensa_insert_page_offsets): Use
"size" instead of "_raw_size" and "_cooked_size". Expand
bfd_section_size macro invocations.
9006 lines
267 KiB
C
9006 lines
267 KiB
C
/* PowerPC64-specific support for 64-bit ELF.
|
||
Copyright 1999, 2000, 2001, 2002, 2003, 2004
|
||
Free Software Foundation, Inc.
|
||
Written by Linus Nordberg, Swox AB <info@swox.com>,
|
||
based on elf32-ppc.c by Ian Lance Taylor.
|
||
Largely rewritten by Alan Modra <amodra@bigpond.net.au>
|
||
|
||
This file is part of BFD, the Binary File Descriptor library.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 2 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License along
|
||
with this program; if not, write to the Free Software Foundation, Inc.,
|
||
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
||
|
||
/* The 64-bit PowerPC ELF ABI may be found at
|
||
http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
|
||
http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
|
||
|
||
#include "bfd.h"
|
||
#include "sysdep.h"
|
||
#include "bfdlink.h"
|
||
#include "libbfd.h"
|
||
#include "elf-bfd.h"
|
||
#include "elf/ppc64.h"
|
||
#include "elf64-ppc.h"
|
||
|
||
static bfd_reloc_status_type ppc64_elf_ha_reloc
|
||
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
|
||
static bfd_reloc_status_type ppc64_elf_brtaken_reloc
|
||
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
|
||
static bfd_reloc_status_type ppc64_elf_sectoff_reloc
|
||
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
|
||
static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
|
||
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
|
||
static bfd_reloc_status_type ppc64_elf_toc_reloc
|
||
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
|
||
static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
|
||
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
|
||
static bfd_reloc_status_type ppc64_elf_toc64_reloc
|
||
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
|
||
static bfd_reloc_status_type ppc64_elf_unhandled_reloc
|
||
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
|
||
|
||
|
||
#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
|
||
#define TARGET_LITTLE_NAME "elf64-powerpcle"
|
||
#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
|
||
#define TARGET_BIG_NAME "elf64-powerpc"
|
||
#define ELF_ARCH bfd_arch_powerpc
|
||
#define ELF_MACHINE_CODE EM_PPC64
|
||
#define ELF_MAXPAGESIZE 0x10000
|
||
#define elf_info_to_howto ppc64_elf_info_to_howto
|
||
|
||
#define elf_backend_want_got_sym 0
|
||
#define elf_backend_want_plt_sym 0
|
||
#define elf_backend_plt_alignment 3
|
||
#define elf_backend_plt_not_loaded 1
|
||
#define elf_backend_got_symbol_offset 0
|
||
#define elf_backend_got_header_size 8
|
||
#define elf_backend_can_gc_sections 1
|
||
#define elf_backend_can_refcount 1
|
||
#define elf_backend_rela_normal 1
|
||
|
||
#define bfd_elf64_mkobject ppc64_elf_mkobject
|
||
#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
|
||
#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
|
||
#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
|
||
#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
|
||
#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
|
||
|
||
#define elf_backend_object_p ppc64_elf_object_p
|
||
#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
|
||
#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
|
||
#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
|
||
#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
|
||
#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
|
||
#define elf_backend_check_relocs ppc64_elf_check_relocs
|
||
#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
|
||
#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
|
||
#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
|
||
#define elf_backend_hide_symbol ppc64_elf_hide_symbol
|
||
#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
|
||
#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
|
||
#define elf_backend_relocate_section ppc64_elf_relocate_section
|
||
#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
|
||
#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
|
||
#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
|
||
#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
|
||
#define elf_backend_special_sections ppc64_elf_special_sections
|
||
|
||
/* The name of the dynamic interpreter. This is put in the .interp
|
||
section. */
|
||
#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
|
||
|
||
/* The size in bytes of an entry in the procedure linkage table. */
|
||
#define PLT_ENTRY_SIZE 24
|
||
|
||
/* The initial size of the plt reserved for the dynamic linker. */
|
||
#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
|
||
|
||
/* TOC base pointers offset from start of TOC. */
|
||
#define TOC_BASE_OFF 0x8000
|
||
|
||
/* Offset of tp and dtp pointers from start of TLS block. */
|
||
#define TP_OFFSET 0x7000
|
||
#define DTP_OFFSET 0x8000
|
||
|
||
/* .plt call stub instructions. The normal stub is like this, but
|
||
sometimes the .plt entry crosses a 64k boundary and we need to
|
||
insert an addis to adjust r12. */
|
||
#define PLT_CALL_STUB_SIZE (7*4)
|
||
#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
|
||
#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
|
||
#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
|
||
#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
|
||
#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
|
||
/* ld %r11,xxx+16@l(%r12) */
|
||
#define BCTR 0x4e800420 /* bctr */
|
||
|
||
|
||
#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
|
||
#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
|
||
|
||
#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
|
||
|
||
/* glink call stub instructions. We enter with the index in R0, and the
|
||
address of glink entry in CTR. From that, we can calculate PLT0. */
|
||
#define GLINK_CALL_STUB_SIZE (16*4)
|
||
#define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
|
||
#define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
|
||
#define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
|
||
#define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
|
||
#define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
|
||
#define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
|
||
#define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
|
||
/* sub %r12,%r12,%r11 */
|
||
#define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
|
||
#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
|
||
/* ld %r11,xxx@l(%r12) */
|
||
#define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
|
||
/* ld %r2,8(%r12) */
|
||
/* mtctr %r11 */
|
||
/* ld %r11,16(%r12) */
|
||
/* bctr */
|
||
|
||
/* Pad with this. */
|
||
#define NOP 0x60000000
|
||
|
||
/* Some other nops. */
|
||
#define CROR_151515 0x4def7b82
|
||
#define CROR_313131 0x4ffffb82
|
||
|
||
/* .glink entries for the first 32k functions are two instructions. */
|
||
#define LI_R0_0 0x38000000 /* li %r0,0 */
|
||
#define B_DOT 0x48000000 /* b . */
|
||
|
||
/* After that, we need two instructions to load the index, followed by
|
||
a branch. */
|
||
#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
|
||
#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
|
||
|
||
/* Instructions to save and restore floating point regs. */
|
||
#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
|
||
#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
|
||
#define BLR 0x4e800020 /* blr */
|
||
|
||
/* Since .opd is an array of descriptors and each entry will end up
|
||
with identical R_PPC64_RELATIVE relocs, there is really no need to
|
||
propagate .opd relocs; The dynamic linker should be taught to
|
||
relocate .opd without reloc entries. */
|
||
#ifndef NO_OPD_RELOCS
|
||
#define NO_OPD_RELOCS 0
|
||
#endif
|
||
|
||
#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
|
||
|
||
/* Relocation HOWTO's. */
|
||
static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
|
||
|
||
static reloc_howto_type ppc64_elf_howto_raw[] = {
|
||
/* This reloc does nothing. */
|
||
HOWTO (R_PPC64_NONE, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_PPC64_NONE", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* A standard 32 bit relocation. */
|
||
HOWTO (R_PPC64_ADDR32, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_PPC64_ADDR32", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* An absolute 26 bit branch; the lower two bits must be zero.
|
||
FIXME: we don't check that, we just clear them. */
|
||
HOWTO (R_PPC64_ADDR24, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
26, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_PPC64_ADDR24", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x03fffffc, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* A standard 16 bit relocation. */
|
||
HOWTO (R_PPC64_ADDR16, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_PPC64_ADDR16", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* A 16 bit relocation without overflow. */
|
||
HOWTO (R_PPC64_ADDR16_LO, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont,/* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_PPC64_ADDR16_LO", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Bits 16-31 of an address. */
|
||
HOWTO (R_PPC64_ADDR16_HI, /* type */
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_PPC64_ADDR16_HI", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Bits 16-31 of an address, plus 1 if the contents of the low 16
|
||
bits, treated as a signed number, is negative. */
|
||
HOWTO (R_PPC64_ADDR16_HA, /* type */
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_ha_reloc, /* special_function */
|
||
"R_PPC64_ADDR16_HA", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* An absolute 16 bit branch; the lower two bits must be zero.
|
||
FIXME: we don't check that, we just clear them. */
|
||
HOWTO (R_PPC64_ADDR14, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_PPC64_ADDR14", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000fffc, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* An absolute 16 bit branch, for which bit 10 should be set to
|
||
indicate that the branch is expected to be taken. The lower two
|
||
bits must be zero. */
|
||
HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
ppc64_elf_brtaken_reloc, /* special_function */
|
||
"R_PPC64_ADDR14_BRTAKEN",/* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000fffc, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* An absolute 16 bit branch, for which bit 10 should be set to
|
||
indicate that the branch is not expected to be taken. The lower
|
||
two bits must be zero. */
|
||
HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
ppc64_elf_brtaken_reloc, /* special_function */
|
||
"R_PPC64_ADDR14_BRNTAKEN",/* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000fffc, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* A relative 26 bit branch; the lower two bits must be zero. */
|
||
HOWTO (R_PPC64_REL24, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
26, /* bitsize */
|
||
TRUE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_PPC64_REL24", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x03fffffc, /* dst_mask */
|
||
TRUE), /* pcrel_offset */
|
||
|
||
/* A relative 16 bit branch; the lower two bits must be zero. */
|
||
HOWTO (R_PPC64_REL14, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
TRUE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_PPC64_REL14", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000fffc, /* dst_mask */
|
||
TRUE), /* pcrel_offset */
|
||
|
||
/* A relative 16 bit branch. Bit 10 should be set to indicate that
|
||
the branch is expected to be taken. The lower two bits must be
|
||
zero. */
|
||
HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
TRUE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
ppc64_elf_brtaken_reloc, /* special_function */
|
||
"R_PPC64_REL14_BRTAKEN", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000fffc, /* dst_mask */
|
||
TRUE), /* pcrel_offset */
|
||
|
||
/* A relative 16 bit branch. Bit 10 should be set to indicate that
|
||
the branch is not expected to be taken. The lower two bits must
|
||
be zero. */
|
||
HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
TRUE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
ppc64_elf_brtaken_reloc, /* special_function */
|
||
"R_PPC64_REL14_BRNTAKEN",/* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000fffc, /* dst_mask */
|
||
TRUE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
|
||
symbol. */
|
||
HOWTO (R_PPC64_GOT16, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_GOT16", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
|
||
the symbol. */
|
||
HOWTO (R_PPC64_GOT16_LO, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_GOT16_LO", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
|
||
the symbol. */
|
||
HOWTO (R_PPC64_GOT16_HI, /* type */
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont,/* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_GOT16_HI", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
|
||
the symbol. */
|
||
HOWTO (R_PPC64_GOT16_HA, /* type */
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont,/* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_GOT16_HA", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* This is used only by the dynamic linker. The symbol should exist
|
||
both in the object being run and in some shared library. The
|
||
dynamic linker copies the data addressed by the symbol from the
|
||
shared library into the object, because the object being
|
||
run has to have the data at some particular address. */
|
||
HOWTO (R_PPC64_COPY, /* type */
|
||
0, /* rightshift */
|
||
0, /* this one is variable size */
|
||
0, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_COPY", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_ADDR64, but used when setting global offset table
|
||
entries. */
|
||
HOWTO (R_PPC64_GLOB_DAT, /* type */
|
||
0, /* rightshift */
|
||
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
||
64, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_GLOB_DAT", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
ONES (64), /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Created by the link editor. Marks a procedure linkage table
|
||
entry for a symbol. */
|
||
HOWTO (R_PPC64_JMP_SLOT, /* type */
|
||
0, /* rightshift */
|
||
0, /* size (0 = byte, 1 = short, 2 = long) */
|
||
0, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_JMP_SLOT", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Used only by the dynamic linker. When the object is run, this
|
||
doubleword64 is set to the load address of the object, plus the
|
||
addend. */
|
||
HOWTO (R_PPC64_RELATIVE, /* type */
|
||
0, /* rightshift */
|
||
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
||
64, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_PPC64_RELATIVE", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
ONES (64), /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_ADDR32, but may be unaligned. */
|
||
HOWTO (R_PPC64_UADDR32, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_PPC64_UADDR32", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_ADDR16, but may be unaligned. */
|
||
HOWTO (R_PPC64_UADDR16, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_PPC64_UADDR16", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* 32-bit PC relative. */
|
||
HOWTO (R_PPC64_REL32, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
TRUE, /* pc_relative */
|
||
0, /* bitpos */
|
||
/* FIXME: Verify. Was complain_overflow_bitfield. */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_PPC64_REL32", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
TRUE), /* pcrel_offset */
|
||
|
||
/* 32-bit relocation to the symbol's procedure linkage table. */
|
||
HOWTO (R_PPC64_PLT32, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_PLT32", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* 32-bit PC relative relocation to the symbol's procedure linkage table.
|
||
FIXME: R_PPC64_PLTREL32 not supported. */
|
||
HOWTO (R_PPC64_PLTREL32, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
TRUE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_PPC64_PLTREL32", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
TRUE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
|
||
the symbol. */
|
||
HOWTO (R_PPC64_PLT16_LO, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_PLT16_LO", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
|
||
the symbol. */
|
||
HOWTO (R_PPC64_PLT16_HI, /* type */
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_PLT16_HI", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
|
||
the symbol. */
|
||
HOWTO (R_PPC64_PLT16_HA, /* type */
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_PLT16_HA", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* 16-bit section relative relocation. */
|
||
HOWTO (R_PPC64_SECTOFF, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
ppc64_elf_sectoff_reloc, /* special_function */
|
||
"R_PPC64_SECTOFF", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_SECTOFF, but no overflow warning. */
|
||
HOWTO (R_PPC64_SECTOFF_LO, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_sectoff_reloc, /* special_function */
|
||
"R_PPC64_SECTOFF_LO", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* 16-bit upper half section relative relocation. */
|
||
HOWTO (R_PPC64_SECTOFF_HI, /* type */
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_sectoff_reloc, /* special_function */
|
||
"R_PPC64_SECTOFF_HI", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* 16-bit upper half adjusted section relative relocation. */
|
||
HOWTO (R_PPC64_SECTOFF_HA, /* type */
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_sectoff_ha_reloc, /* special_function */
|
||
"R_PPC64_SECTOFF_HA", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_REL24 without touching the two least significant bits. */
|
||
HOWTO (R_PPC64_REL30, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
30, /* bitsize */
|
||
TRUE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_PPC64_REL30", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xfffffffc, /* dst_mask */
|
||
TRUE), /* pcrel_offset */
|
||
|
||
/* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
|
||
|
||
/* A standard 64-bit relocation. */
|
||
HOWTO (R_PPC64_ADDR64, /* type */
|
||
0, /* rightshift */
|
||
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
||
64, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_PPC64_ADDR64", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
ONES (64), /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* The bits 32-47 of an address. */
|
||
HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
|
||
32, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_PPC64_ADDR16_HIGHER", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* The bits 32-47 of an address, plus 1 if the contents of the low
|
||
16 bits, treated as a signed number, is negative. */
|
||
HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
|
||
32, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_ha_reloc, /* special_function */
|
||
"R_PPC64_ADDR16_HIGHERA", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* The bits 48-63 of an address. */
|
||
HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
|
||
48, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_PPC64_ADDR16_HIGHEST", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* The bits 48-63 of an address, plus 1 if the contents of the low
|
||
16 bits, treated as a signed number, is negative. */
|
||
HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
|
||
48, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_ha_reloc, /* special_function */
|
||
"R_PPC64_ADDR16_HIGHESTA", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like ADDR64, but may be unaligned. */
|
||
HOWTO (R_PPC64_UADDR64, /* type */
|
||
0, /* rightshift */
|
||
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
||
64, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_PPC64_UADDR64", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
ONES (64), /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* 64-bit relative relocation. */
|
||
HOWTO (R_PPC64_REL64, /* type */
|
||
0, /* rightshift */
|
||
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
||
64, /* bitsize */
|
||
TRUE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_PPC64_REL64", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
ONES (64), /* dst_mask */
|
||
TRUE), /* pcrel_offset */
|
||
|
||
/* 64-bit relocation to the symbol's procedure linkage table. */
|
||
HOWTO (R_PPC64_PLT64, /* type */
|
||
0, /* rightshift */
|
||
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
||
64, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_PLT64", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
ONES (64), /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* 64-bit PC relative relocation to the symbol's procedure linkage
|
||
table. */
|
||
/* FIXME: R_PPC64_PLTREL64 not supported. */
|
||
HOWTO (R_PPC64_PLTREL64, /* type */
|
||
0, /* rightshift */
|
||
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
||
64, /* bitsize */
|
||
TRUE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_PLTREL64", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
ONES (64), /* dst_mask */
|
||
TRUE), /* pcrel_offset */
|
||
|
||
/* 16 bit TOC-relative relocation. */
|
||
|
||
/* R_PPC64_TOC16 47 half16* S + A - .TOC. */
|
||
HOWTO (R_PPC64_TOC16, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
ppc64_elf_toc_reloc, /* special_function */
|
||
"R_PPC64_TOC16", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* 16 bit TOC-relative relocation without overflow. */
|
||
|
||
/* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
|
||
HOWTO (R_PPC64_TOC16_LO, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_toc_reloc, /* special_function */
|
||
"R_PPC64_TOC16_LO", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* 16 bit TOC-relative relocation, high 16 bits. */
|
||
|
||
/* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
|
||
HOWTO (R_PPC64_TOC16_HI, /* type */
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_toc_reloc, /* special_function */
|
||
"R_PPC64_TOC16_HI", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
|
||
contents of the low 16 bits, treated as a signed number, is
|
||
negative. */
|
||
|
||
/* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
|
||
HOWTO (R_PPC64_TOC16_HA, /* type */
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_toc_ha_reloc, /* special_function */
|
||
"R_PPC64_TOC16_HA", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* 64-bit relocation; insert value of TOC base (.TOC.). */
|
||
|
||
/* R_PPC64_TOC 51 doubleword64 .TOC. */
|
||
HOWTO (R_PPC64_TOC, /* type */
|
||
0, /* rightshift */
|
||
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
||
64, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
ppc64_elf_toc64_reloc, /* special_function */
|
||
"R_PPC64_TOC", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
ONES (64), /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_GOT16, but also informs the link editor that the
|
||
value to relocate may (!) refer to a PLT entry which the link
|
||
editor (a) may replace with the symbol value. If the link editor
|
||
is unable to fully resolve the symbol, it may (b) create a PLT
|
||
entry and store the address to the new PLT entry in the GOT.
|
||
This permits lazy resolution of function symbols at run time.
|
||
The link editor may also skip all of this and just (c) emit a
|
||
R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
|
||
/* FIXME: R_PPC64_PLTGOT16 not implemented. */
|
||
HOWTO (R_PPC64_PLTGOT16, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_PLTGOT16", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_PLTGOT16, but without overflow. */
|
||
/* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
|
||
HOWTO (R_PPC64_PLTGOT16_LO, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_PLTGOT16_LO", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
|
||
/* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
|
||
HOWTO (R_PPC64_PLTGOT16_HI, /* type */
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_PLTGOT16_HI", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
|
||
1 if the contents of the low 16 bits, treated as a signed number,
|
||
is negative. */
|
||
/* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
|
||
HOWTO (R_PPC64_PLTGOT16_HA, /* type */
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont,/* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_PLTGOT16_HA", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_ADDR16, but for instructions with a DS field. */
|
||
HOWTO (R_PPC64_ADDR16_DS, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_PPC64_ADDR16_DS", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xfffc, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
|
||
HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont,/* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_PPC64_ADDR16_LO_DS",/* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xfffc, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_GOT16, but for instructions with a DS field. */
|
||
HOWTO (R_PPC64_GOT16_DS, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_GOT16_DS", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xfffc, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
|
||
HOWTO (R_PPC64_GOT16_LO_DS, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_GOT16_LO_DS", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xfffc, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
|
||
HOWTO (R_PPC64_PLT16_LO_DS, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_PLT16_LO_DS", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xfffc, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
|
||
HOWTO (R_PPC64_SECTOFF_DS, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
ppc64_elf_sectoff_reloc, /* special_function */
|
||
"R_PPC64_SECTOFF_DS", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xfffc, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
|
||
HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_sectoff_reloc, /* special_function */
|
||
"R_PPC64_SECTOFF_LO_DS",/* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xfffc, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_TOC16, but for instructions with a DS field. */
|
||
HOWTO (R_PPC64_TOC16_DS, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
ppc64_elf_toc_reloc, /* special_function */
|
||
"R_PPC64_TOC16_DS", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xfffc, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
|
||
HOWTO (R_PPC64_TOC16_LO_DS, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_toc_reloc, /* special_function */
|
||
"R_PPC64_TOC16_LO_DS", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xfffc, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
|
||
/* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
|
||
HOWTO (R_PPC64_PLTGOT16_DS, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_PLTGOT16_DS", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xfffc, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
|
||
/* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
|
||
HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_PLTGOT16_LO_DS",/* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xfffc, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Marker reloc for TLS. */
|
||
HOWTO (R_PPC64_TLS,
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_PPC64_TLS", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Computes the load module index of the load module that contains the
|
||
definition of its TLS sym. */
|
||
HOWTO (R_PPC64_DTPMOD64,
|
||
0, /* rightshift */
|
||
4, /* size (0 = byte, 1 = short, 2 = long) */
|
||
64, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_DTPMOD64", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
ONES (64), /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Computes a dtv-relative displacement, the difference between the value
|
||
of sym+add and the base address of the thread-local storage block that
|
||
contains the definition of sym, minus 0x8000. */
|
||
HOWTO (R_PPC64_DTPREL64,
|
||
0, /* rightshift */
|
||
4, /* size (0 = byte, 1 = short, 2 = long) */
|
||
64, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_DTPREL64", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
ONES (64), /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* A 16 bit dtprel reloc. */
|
||
HOWTO (R_PPC64_DTPREL16,
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_DTPREL16", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like DTPREL16, but no overflow. */
|
||
HOWTO (R_PPC64_DTPREL16_LO,
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_DTPREL16_LO", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like DTPREL16_LO, but next higher group of 16 bits. */
|
||
HOWTO (R_PPC64_DTPREL16_HI,
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_DTPREL16_HI", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like DTPREL16_HI, but adjust for low 16 bits. */
|
||
HOWTO (R_PPC64_DTPREL16_HA,
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_DTPREL16_HA", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like DTPREL16_HI, but next higher group of 16 bits. */
|
||
HOWTO (R_PPC64_DTPREL16_HIGHER,
|
||
32, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_DTPREL16_HIGHER", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
|
||
HOWTO (R_PPC64_DTPREL16_HIGHERA,
|
||
32, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_DTPREL16_HIGHERA", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
|
||
HOWTO (R_PPC64_DTPREL16_HIGHEST,
|
||
48, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_DTPREL16_HIGHEST", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
|
||
HOWTO (R_PPC64_DTPREL16_HIGHESTA,
|
||
48, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_DTPREL16_HIGHESTA", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like DTPREL16, but for insns with a DS field. */
|
||
HOWTO (R_PPC64_DTPREL16_DS,
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_DTPREL16_DS", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xfffc, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like DTPREL16_DS, but no overflow. */
|
||
HOWTO (R_PPC64_DTPREL16_LO_DS,
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_DTPREL16_LO_DS", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xfffc, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Computes a tp-relative displacement, the difference between the value of
|
||
sym+add and the value of the thread pointer (r13). */
|
||
HOWTO (R_PPC64_TPREL64,
|
||
0, /* rightshift */
|
||
4, /* size (0 = byte, 1 = short, 2 = long) */
|
||
64, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_TPREL64", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
ONES (64), /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* A 16 bit tprel reloc. */
|
||
HOWTO (R_PPC64_TPREL16,
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_TPREL16", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like TPREL16, but no overflow. */
|
||
HOWTO (R_PPC64_TPREL16_LO,
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_TPREL16_LO", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like TPREL16_LO, but next higher group of 16 bits. */
|
||
HOWTO (R_PPC64_TPREL16_HI,
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_TPREL16_HI", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like TPREL16_HI, but adjust for low 16 bits. */
|
||
HOWTO (R_PPC64_TPREL16_HA,
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_TPREL16_HA", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like TPREL16_HI, but next higher group of 16 bits. */
|
||
HOWTO (R_PPC64_TPREL16_HIGHER,
|
||
32, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_TPREL16_HIGHER", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like TPREL16_HIGHER, but adjust for low 16 bits. */
|
||
HOWTO (R_PPC64_TPREL16_HIGHERA,
|
||
32, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_TPREL16_HIGHERA", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like TPREL16_HIGHER, but next higher group of 16 bits. */
|
||
HOWTO (R_PPC64_TPREL16_HIGHEST,
|
||
48, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_TPREL16_HIGHEST", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
|
||
HOWTO (R_PPC64_TPREL16_HIGHESTA,
|
||
48, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_TPREL16_HIGHESTA", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like TPREL16, but for insns with a DS field. */
|
||
HOWTO (R_PPC64_TPREL16_DS,
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_TPREL16_DS", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xfffc, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like TPREL16_DS, but no overflow. */
|
||
HOWTO (R_PPC64_TPREL16_LO_DS,
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_TPREL16_LO_DS", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xfffc, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Allocates two contiguous entries in the GOT to hold a tls_index structure,
|
||
with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
|
||
to the first entry relative to the TOC base (r2). */
|
||
HOWTO (R_PPC64_GOT_TLSGD16,
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_GOT_TLSGD16", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like GOT_TLSGD16, but no overflow. */
|
||
HOWTO (R_PPC64_GOT_TLSGD16_LO,
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_GOT_TLSGD16_LO", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
|
||
HOWTO (R_PPC64_GOT_TLSGD16_HI,
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_GOT_TLSGD16_HI", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
|
||
HOWTO (R_PPC64_GOT_TLSGD16_HA,
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_GOT_TLSGD16_HA", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Allocates two contiguous entries in the GOT to hold a tls_index structure,
|
||
with values (sym+add)@dtpmod and zero, and computes the offset to the
|
||
first entry relative to the TOC base (r2). */
|
||
HOWTO (R_PPC64_GOT_TLSLD16,
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_GOT_TLSLD16", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like GOT_TLSLD16, but no overflow. */
|
||
HOWTO (R_PPC64_GOT_TLSLD16_LO,
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_GOT_TLSLD16_LO", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
|
||
HOWTO (R_PPC64_GOT_TLSLD16_HI,
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_GOT_TLSLD16_HI", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
|
||
HOWTO (R_PPC64_GOT_TLSLD16_HA,
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_GOT_TLSLD16_HA", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
|
||
the offset to the entry relative to the TOC base (r2). */
|
||
HOWTO (R_PPC64_GOT_DTPREL16_DS,
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_GOT_DTPREL16_DS", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xfffc, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like GOT_DTPREL16_DS, but no overflow. */
|
||
HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_GOT_DTPREL16_LO_DS", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xfffc, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
|
||
HOWTO (R_PPC64_GOT_DTPREL16_HI,
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_GOT_DTPREL16_HI", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
|
||
HOWTO (R_PPC64_GOT_DTPREL16_HA,
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_GOT_DTPREL16_HA", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
|
||
offset to the entry relative to the TOC base (r2). */
|
||
HOWTO (R_PPC64_GOT_TPREL16_DS,
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_GOT_TPREL16_DS", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xfffc, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like GOT_TPREL16_DS, but no overflow. */
|
||
HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_GOT_TPREL16_LO_DS", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xfffc, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
|
||
HOWTO (R_PPC64_GOT_TPREL16_HI,
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_GOT_TPREL16_HI", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
|
||
HOWTO (R_PPC64_GOT_TPREL16_HA,
|
||
16, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc64_elf_unhandled_reloc, /* special_function */
|
||
"R_PPC64_GOT_TPREL16_HA", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* GNU extension to record C++ vtable hierarchy. */
|
||
HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
|
||
0, /* rightshift */
|
||
0, /* size (0 = byte, 1 = short, 2 = long) */
|
||
0, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
NULL, /* special_function */
|
||
"R_PPC64_GNU_VTINHERIT", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* GNU extension to record C++ vtable member usage. */
|
||
HOWTO (R_PPC64_GNU_VTENTRY, /* type */
|
||
0, /* rightshift */
|
||
0, /* size (0 = byte, 1 = short, 2 = long) */
|
||
0, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
NULL, /* special_function */
|
||
"R_PPC64_GNU_VTENTRY", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
};
|
||
|
||
|
||
/* Initialize the ppc64_elf_howto_table, so that linear accesses can
|
||
be done. */
|
||
|
||
static void
|
||
ppc_howto_init (void)
|
||
{
|
||
unsigned int i, type;
|
||
|
||
for (i = 0;
|
||
i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
|
||
i++)
|
||
{
|
||
type = ppc64_elf_howto_raw[i].type;
|
||
BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
|
||
/ sizeof (ppc64_elf_howto_table[0])));
|
||
ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
|
||
}
|
||
}
|
||
|
||
static reloc_howto_type *
|
||
ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
||
bfd_reloc_code_real_type code)
|
||
{
|
||
enum elf_ppc64_reloc_type r = R_PPC64_NONE;
|
||
|
||
if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
|
||
/* Initialize howto table if needed. */
|
||
ppc_howto_init ();
|
||
|
||
switch (code)
|
||
{
|
||
default:
|
||
return NULL;
|
||
|
||
case BFD_RELOC_NONE: r = R_PPC64_NONE;
|
||
break;
|
||
case BFD_RELOC_32: r = R_PPC64_ADDR32;
|
||
break;
|
||
case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
|
||
break;
|
||
case BFD_RELOC_16: r = R_PPC64_ADDR16;
|
||
break;
|
||
case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
|
||
break;
|
||
case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
|
||
break;
|
||
case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
|
||
break;
|
||
case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
|
||
break;
|
||
case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
|
||
break;
|
||
case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
|
||
break;
|
||
case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
|
||
break;
|
||
case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
|
||
break;
|
||
case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
|
||
break;
|
||
case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
|
||
break;
|
||
case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
|
||
break;
|
||
case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
|
||
break;
|
||
case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
|
||
break;
|
||
case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
|
||
break;
|
||
case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
|
||
break;
|
||
case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
|
||
break;
|
||
case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
|
||
break;
|
||
case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
|
||
break;
|
||
case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
|
||
break;
|
||
case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
|
||
break;
|
||
case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
|
||
break;
|
||
case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
|
||
break;
|
||
case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
|
||
break;
|
||
case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
|
||
break;
|
||
case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
|
||
break;
|
||
case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
|
||
break;
|
||
case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
|
||
break;
|
||
case BFD_RELOC_64: r = R_PPC64_ADDR64;
|
||
break;
|
||
case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
|
||
break;
|
||
case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
|
||
break;
|
||
case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
|
||
break;
|
||
case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
|
||
break;
|
||
case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
|
||
break;
|
||
case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
|
||
break;
|
||
case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
|
||
break;
|
||
case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
|
||
break;
|
||
case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
|
||
break;
|
||
case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
|
||
break;
|
||
case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
|
||
break;
|
||
case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
|
||
break;
|
||
case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
|
||
break;
|
||
case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
|
||
break;
|
||
case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
|
||
break;
|
||
case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
|
||
break;
|
||
case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
|
||
break;
|
||
case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
|
||
break;
|
||
case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
|
||
break;
|
||
case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
|
||
break;
|
||
case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
|
||
break;
|
||
case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
|
||
break;
|
||
case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
|
||
break;
|
||
case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
|
||
break;
|
||
case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
|
||
break;
|
||
case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
|
||
break;
|
||
case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
|
||
break;
|
||
case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
|
||
break;
|
||
case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
|
||
break;
|
||
case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
|
||
break;
|
||
case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
|
||
break;
|
||
case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
|
||
break;
|
||
case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
|
||
break;
|
||
case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
|
||
break;
|
||
case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
|
||
break;
|
||
case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
|
||
break;
|
||
case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
|
||
break;
|
||
case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
|
||
break;
|
||
case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
|
||
break;
|
||
case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
|
||
break;
|
||
case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
|
||
break;
|
||
case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
|
||
break;
|
||
case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
|
||
break;
|
||
case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
|
||
break;
|
||
case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
|
||
break;
|
||
case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
|
||
break;
|
||
case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
|
||
break;
|
||
case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
|
||
break;
|
||
case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
|
||
break;
|
||
case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
|
||
break;
|
||
case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
|
||
break;
|
||
case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
|
||
break;
|
||
case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
|
||
break;
|
||
case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
|
||
break;
|
||
case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
|
||
break;
|
||
case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
|
||
break;
|
||
case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
|
||
break;
|
||
case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
|
||
break;
|
||
case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
|
||
break;
|
||
case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
|
||
break;
|
||
case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
|
||
break;
|
||
case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
|
||
break;
|
||
case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
|
||
break;
|
||
case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
|
||
break;
|
||
case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
|
||
break;
|
||
case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
|
||
break;
|
||
case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
|
||
break;
|
||
case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
|
||
break;
|
||
case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
|
||
break;
|
||
}
|
||
|
||
return ppc64_elf_howto_table[r];
|
||
};
|
||
|
||
/* Set the howto pointer for a PowerPC ELF reloc. */
|
||
|
||
static void
|
||
ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
|
||
Elf_Internal_Rela *dst)
|
||
{
|
||
unsigned int type;
|
||
|
||
/* Initialize howto table if needed. */
|
||
if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
|
||
ppc_howto_init ();
|
||
|
||
type = ELF64_R_TYPE (dst->r_info);
|
||
BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
|
||
/ sizeof (ppc64_elf_howto_table[0])));
|
||
cache_ptr->howto = ppc64_elf_howto_table[type];
|
||
}
|
||
|
||
/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
|
||
|
||
static bfd_reloc_status_type
|
||
ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
|
||
void *data, asection *input_section,
|
||
bfd *output_bfd, char **error_message)
|
||
{
|
||
/* If this is a relocatable link (output_bfd test tells us), just
|
||
call the generic function. Any adjustment will be done at final
|
||
link time. */
|
||
if (output_bfd != NULL)
|
||
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
||
input_section, output_bfd, error_message);
|
||
|
||
/* Adjust the addend for sign extension of the low 16 bits.
|
||
We won't actually be using the low 16 bits, so trashing them
|
||
doesn't matter. */
|
||
reloc_entry->addend += 0x8000;
|
||
return bfd_reloc_continue;
|
||
}
|
||
|
||
static bfd_reloc_status_type
|
||
ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
|
||
void *data, asection *input_section,
|
||
bfd *output_bfd, char **error_message)
|
||
{
|
||
long insn;
|
||
enum elf_ppc64_reloc_type r_type;
|
||
bfd_size_type octets;
|
||
/* Disabled until we sort out how ld should choose 'y' vs 'at'. */
|
||
bfd_boolean is_power4 = FALSE;
|
||
|
||
/* If this is a relocatable link (output_bfd test tells us), just
|
||
call the generic function. Any adjustment will be done at final
|
||
link time. */
|
||
if (output_bfd != NULL)
|
||
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
||
input_section, output_bfd, error_message);
|
||
|
||
octets = reloc_entry->address * bfd_octets_per_byte (abfd);
|
||
insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
|
||
insn &= ~(0x01 << 21);
|
||
r_type = reloc_entry->howto->type;
|
||
if (r_type == R_PPC64_ADDR14_BRTAKEN
|
||
|| r_type == R_PPC64_REL14_BRTAKEN)
|
||
insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
|
||
|
||
if (is_power4)
|
||
{
|
||
/* Set 'a' bit. This is 0b00010 in BO field for branch
|
||
on CR(BI) insns (BO == 001at or 011at), and 0b01000
|
||
for branch on CTR insns (BO == 1a00t or 1a01t). */
|
||
if ((insn & (0x14 << 21)) == (0x04 << 21))
|
||
insn |= 0x02 << 21;
|
||
else if ((insn & (0x14 << 21)) == (0x10 << 21))
|
||
insn |= 0x08 << 21;
|
||
else
|
||
return bfd_reloc_continue;
|
||
}
|
||
else
|
||
{
|
||
bfd_vma target = 0;
|
||
bfd_vma from;
|
||
|
||
if (!bfd_is_com_section (symbol->section))
|
||
target = symbol->value;
|
||
target += symbol->section->output_section->vma;
|
||
target += symbol->section->output_offset;
|
||
target += reloc_entry->addend;
|
||
|
||
from = (reloc_entry->address
|
||
+ input_section->output_offset
|
||
+ input_section->output_section->vma);
|
||
|
||
/* Invert 'y' bit if not the default. */
|
||
if ((bfd_signed_vma) (target - from) < 0)
|
||
insn ^= 0x01 << 21;
|
||
}
|
||
bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
|
||
return bfd_reloc_continue;
|
||
}
|
||
|
||
static bfd_reloc_status_type
|
||
ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
|
||
void *data, asection *input_section,
|
||
bfd *output_bfd, char **error_message)
|
||
{
|
||
/* If this is a relocatable link (output_bfd test tells us), just
|
||
call the generic function. Any adjustment will be done at final
|
||
link time. */
|
||
if (output_bfd != NULL)
|
||
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
||
input_section, output_bfd, error_message);
|
||
|
||
/* Subtract the symbol section base address. */
|
||
reloc_entry->addend -= symbol->section->output_section->vma;
|
||
return bfd_reloc_continue;
|
||
}
|
||
|
||
static bfd_reloc_status_type
|
||
ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
|
||
void *data, asection *input_section,
|
||
bfd *output_bfd, char **error_message)
|
||
{
|
||
/* If this is a relocatable link (output_bfd test tells us), just
|
||
call the generic function. Any adjustment will be done at final
|
||
link time. */
|
||
if (output_bfd != NULL)
|
||
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
||
input_section, output_bfd, error_message);
|
||
|
||
/* Subtract the symbol section base address. */
|
||
reloc_entry->addend -= symbol->section->output_section->vma;
|
||
|
||
/* Adjust the addend for sign extension of the low 16 bits. */
|
||
reloc_entry->addend += 0x8000;
|
||
return bfd_reloc_continue;
|
||
}
|
||
|
||
static bfd_reloc_status_type
|
||
ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
|
||
void *data, asection *input_section,
|
||
bfd *output_bfd, char **error_message)
|
||
{
|
||
bfd_vma TOCstart;
|
||
|
||
/* If this is a relocatable link (output_bfd test tells us), just
|
||
call the generic function. Any adjustment will be done at final
|
||
link time. */
|
||
if (output_bfd != NULL)
|
||
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
||
input_section, output_bfd, error_message);
|
||
|
||
TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
|
||
if (TOCstart == 0)
|
||
TOCstart = ppc64_elf_toc (input_section->output_section->owner);
|
||
|
||
/* Subtract the TOC base address. */
|
||
reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
|
||
return bfd_reloc_continue;
|
||
}
|
||
|
||
static bfd_reloc_status_type
|
||
ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
|
||
void *data, asection *input_section,
|
||
bfd *output_bfd, char **error_message)
|
||
{
|
||
bfd_vma TOCstart;
|
||
|
||
/* If this is a relocatable link (output_bfd test tells us), just
|
||
call the generic function. Any adjustment will be done at final
|
||
link time. */
|
||
if (output_bfd != NULL)
|
||
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
||
input_section, output_bfd, error_message);
|
||
|
||
TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
|
||
if (TOCstart == 0)
|
||
TOCstart = ppc64_elf_toc (input_section->output_section->owner);
|
||
|
||
/* Subtract the TOC base address. */
|
||
reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
|
||
|
||
/* Adjust the addend for sign extension of the low 16 bits. */
|
||
reloc_entry->addend += 0x8000;
|
||
return bfd_reloc_continue;
|
||
}
|
||
|
||
static bfd_reloc_status_type
|
||
ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
|
||
void *data, asection *input_section,
|
||
bfd *output_bfd, char **error_message)
|
||
{
|
||
bfd_vma TOCstart;
|
||
bfd_size_type octets;
|
||
|
||
/* If this is a relocatable link (output_bfd test tells us), just
|
||
call the generic function. Any adjustment will be done at final
|
||
link time. */
|
||
if (output_bfd != NULL)
|
||
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
||
input_section, output_bfd, error_message);
|
||
|
||
TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
|
||
if (TOCstart == 0)
|
||
TOCstart = ppc64_elf_toc (input_section->output_section->owner);
|
||
|
||
octets = reloc_entry->address * bfd_octets_per_byte (abfd);
|
||
bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
static bfd_reloc_status_type
|
||
ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
|
||
void *data, asection *input_section,
|
||
bfd *output_bfd, char **error_message)
|
||
{
|
||
/* If this is a relocatable link (output_bfd test tells us), just
|
||
call the generic function. Any adjustment will be done at final
|
||
link time. */
|
||
if (output_bfd != NULL)
|
||
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
||
input_section, output_bfd, error_message);
|
||
|
||
if (error_message != NULL)
|
||
{
|
||
static char buf[60];
|
||
sprintf (buf, "generic linker can't handle %s",
|
||
reloc_entry->howto->name);
|
||
*error_message = buf;
|
||
}
|
||
return bfd_reloc_dangerous;
|
||
}
|
||
|
||
struct ppc64_elf_obj_tdata
|
||
{
|
||
struct elf_obj_tdata elf;
|
||
|
||
/* Shortcuts to dynamic linker sections. */
|
||
asection *got;
|
||
asection *relgot;
|
||
|
||
/* TLS local dynamic got entry handling. Suppose for multiple GOT
|
||
sections means we potentially need one of these for each input bfd. */
|
||
union {
|
||
bfd_signed_vma refcount;
|
||
bfd_vma offset;
|
||
} tlsld_got;
|
||
};
|
||
|
||
#define ppc64_elf_tdata(bfd) \
|
||
((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
|
||
|
||
#define ppc64_tlsld_got(bfd) \
|
||
(&ppc64_elf_tdata (bfd)->tlsld_got)
|
||
|
||
/* Override the generic function because we store some extras. */
|
||
|
||
static bfd_boolean
|
||
ppc64_elf_mkobject (bfd *abfd)
|
||
{
|
||
bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
|
||
abfd->tdata.any = bfd_zalloc (abfd, amt);
|
||
if (abfd->tdata.any == NULL)
|
||
return FALSE;
|
||
return TRUE;
|
||
}
|
||
|
||
/* Fix bad default arch selected for a 64 bit input bfd when the
|
||
default is 32 bit. */
|
||
|
||
static bfd_boolean
|
||
ppc64_elf_object_p (bfd *abfd)
|
||
{
|
||
if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
|
||
{
|
||
Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
|
||
|
||
if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
|
||
{
|
||
/* Relies on arch after 32 bit default being 64 bit default. */
|
||
abfd->arch_info = abfd->arch_info->next;
|
||
BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
|
||
}
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/* Support for core dump NOTE sections. */
|
||
|
||
static bfd_boolean
|
||
ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
|
||
{
|
||
size_t offset, size;
|
||
|
||
if (note->descsz != 504)
|
||
return FALSE;
|
||
|
||
/* pr_cursig */
|
||
elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
|
||
|
||
/* pr_pid */
|
||
elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
|
||
|
||
/* pr_reg */
|
||
offset = 112;
|
||
size = 384;
|
||
|
||
/* Make a ".reg/999" section. */
|
||
return _bfd_elfcore_make_pseudosection (abfd, ".reg",
|
||
size, note->descpos + offset);
|
||
}
|
||
|
||
static bfd_boolean
|
||
ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
|
||
{
|
||
if (note->descsz != 136)
|
||
return FALSE;
|
||
|
||
elf_tdata (abfd)->core_program
|
||
= _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
|
||
elf_tdata (abfd)->core_command
|
||
= _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Merge backend specific data from an object file to the output
|
||
object file when linking. */
|
||
|
||
static bfd_boolean
|
||
ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
|
||
{
|
||
/* Check if we have the same endianess. */
|
||
if (ibfd->xvec->byteorder != obfd->xvec->byteorder
|
||
&& ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
|
||
&& obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
|
||
{
|
||
const char *msg;
|
||
|
||
if (bfd_big_endian (ibfd))
|
||
msg = _("%s: compiled for a big endian system "
|
||
"and target is little endian");
|
||
else
|
||
msg = _("%s: compiled for a little endian system "
|
||
"and target is big endian");
|
||
|
||
(*_bfd_error_handler) (msg, bfd_archive_filename (ibfd));
|
||
|
||
bfd_set_error (bfd_error_wrong_format);
|
||
return FALSE;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Add extra PPC sections. */
|
||
|
||
static struct bfd_elf_special_section const ppc64_elf_special_sections[]=
|
||
{
|
||
{ ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
|
||
{ ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
|
||
{ ".plt", 4, 0, SHT_NOBITS, 0 },
|
||
{ ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
|
||
{ ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
|
||
{ ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
|
||
{ NULL, 0, 0, 0, 0 }
|
||
};
|
||
|
||
struct _ppc64_elf_section_data
|
||
{
|
||
struct bfd_elf_section_data elf;
|
||
|
||
/* An array with one entry for each opd function descriptor. */
|
||
union
|
||
{
|
||
/* Points to the function code section for local opd entries. */
|
||
asection **func_sec;
|
||
/* After editing .opd, adjust references to opd local syms. */
|
||
long *adjust;
|
||
} opd;
|
||
|
||
/* An array for toc sections, indexed by offset/8.
|
||
Specifies the relocation symbol index used at a given toc offset. */
|
||
unsigned *t_symndx;
|
||
};
|
||
|
||
#define ppc64_elf_section_data(sec) \
|
||
((struct _ppc64_elf_section_data *) elf_section_data (sec))
|
||
|
||
static bfd_boolean
|
||
ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
|
||
{
|
||
struct _ppc64_elf_section_data *sdata;
|
||
bfd_size_type amt = sizeof (*sdata);
|
||
|
||
sdata = bfd_zalloc (abfd, amt);
|
||
if (sdata == NULL)
|
||
return FALSE;
|
||
sec->used_by_bfd = sdata;
|
||
|
||
return _bfd_elf_new_section_hook (abfd, sec);
|
||
}
|
||
|
||
/* The following functions are specific to the ELF linker, while
|
||
functions above are used generally. Those named ppc64_elf_* are
|
||
called by the main ELF linker code. They appear in this file more
|
||
or less in the order in which they are called. eg.
|
||
ppc64_elf_check_relocs is called early in the link process,
|
||
ppc64_elf_finish_dynamic_sections is one of the last functions
|
||
called.
|
||
|
||
PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
|
||
functions have both a function code symbol and a function descriptor
|
||
symbol. A call to foo in a relocatable object file looks like:
|
||
|
||
. .text
|
||
. x:
|
||
. bl .foo
|
||
. nop
|
||
|
||
The function definition in another object file might be:
|
||
|
||
. .section .opd
|
||
. foo: .quad .foo
|
||
. .quad .TOC.@tocbase
|
||
. .quad 0
|
||
.
|
||
. .text
|
||
. .foo: blr
|
||
|
||
When the linker resolves the call during a static link, the branch
|
||
unsurprisingly just goes to .foo and the .opd information is unused.
|
||
If the function definition is in a shared library, things are a little
|
||
different: The call goes via a plt call stub, the opd information gets
|
||
copied to the plt, and the linker patches the nop.
|
||
|
||
. x:
|
||
. bl .foo_stub
|
||
. ld 2,40(1)
|
||
.
|
||
.
|
||
. .foo_stub:
|
||
. addis 12,2,Lfoo@toc@ha # in practice, the call stub
|
||
. addi 12,12,Lfoo@toc@l # is slightly optimized, but
|
||
. std 2,40(1) # this is the general idea
|
||
. ld 11,0(12)
|
||
. ld 2,8(12)
|
||
. mtctr 11
|
||
. ld 11,16(12)
|
||
. bctr
|
||
.
|
||
. .section .plt
|
||
. Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
|
||
|
||
The "reloc ()" notation is supposed to indicate that the linker emits
|
||
an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
|
||
copying.
|
||
|
||
What are the difficulties here? Well, firstly, the relocations
|
||
examined by the linker in check_relocs are against the function code
|
||
sym .foo, while the dynamic relocation in the plt is emitted against
|
||
the function descriptor symbol, foo. Somewhere along the line, we need
|
||
to carefully copy dynamic link information from one symbol to the other.
|
||
Secondly, the generic part of the elf linker will make .foo a dynamic
|
||
symbol as is normal for most other backends. We need foo dynamic
|
||
instead, at least for an application final link. However, when
|
||
creating a shared library containing foo, we need to have both symbols
|
||
dynamic so that references to .foo are satisfied during the early
|
||
stages of linking. Otherwise the linker might decide to pull in a
|
||
definition from some other object, eg. a static library. */
|
||
|
||
/* The linker needs to keep track of the number of relocs that it
|
||
decides to copy as dynamic relocs in check_relocs for each symbol.
|
||
This is so that it can later discard them if they are found to be
|
||
unnecessary. We store the information in a field extending the
|
||
regular ELF linker hash table. */
|
||
|
||
struct ppc_dyn_relocs
|
||
{
|
||
struct ppc_dyn_relocs *next;
|
||
|
||
/* The input section of the reloc. */
|
||
asection *sec;
|
||
|
||
/* Total number of relocs copied for the input section. */
|
||
bfd_size_type count;
|
||
|
||
/* Number of pc-relative relocs copied for the input section. */
|
||
bfd_size_type pc_count;
|
||
};
|
||
|
||
/* Track GOT entries needed for a given symbol. We might need more
|
||
than one got entry per symbol. */
|
||
struct got_entry
|
||
{
|
||
struct got_entry *next;
|
||
|
||
/* The symbol addend that we'll be placing in the GOT. */
|
||
bfd_vma addend;
|
||
|
||
/* Unlike other ELF targets, we use separate GOT entries for the same
|
||
symbol referenced from different input files. This is to support
|
||
automatic multiple TOC/GOT sections, where the TOC base can vary
|
||
from one input file to another.
|
||
|
||
Point to the BFD owning this GOT entry. */
|
||
bfd *owner;
|
||
|
||
/* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
|
||
TLS_TPREL or TLS_DTPREL for tls entries. */
|
||
char tls_type;
|
||
|
||
/* Reference count until size_dynamic_sections, GOT offset thereafter. */
|
||
union
|
||
{
|
||
bfd_signed_vma refcount;
|
||
bfd_vma offset;
|
||
} got;
|
||
};
|
||
|
||
/* The same for PLT. */
|
||
struct plt_entry
|
||
{
|
||
struct plt_entry *next;
|
||
|
||
bfd_vma addend;
|
||
|
||
union
|
||
{
|
||
bfd_signed_vma refcount;
|
||
bfd_vma offset;
|
||
} plt;
|
||
};
|
||
|
||
/* Of those relocs that might be copied as dynamic relocs, this macro
|
||
selects those that must be copied when linking a shared library,
|
||
even when the symbol is local. */
|
||
|
||
#define MUST_BE_DYN_RELOC(RTYPE) \
|
||
((RTYPE) != R_PPC64_REL32 \
|
||
&& (RTYPE) != R_PPC64_REL64 \
|
||
&& (RTYPE) != R_PPC64_REL30)
|
||
|
||
/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
|
||
copying dynamic variables from a shared lib into an app's dynbss
|
||
section, and instead use a dynamic relocation to point into the
|
||
shared lib. With code that gcc generates, it's vital that this be
|
||
enabled; In the PowerPC64 ABI, the address of a function is actually
|
||
the address of a function descriptor, which resides in the .opd
|
||
section. gcc uses the descriptor directly rather than going via the
|
||
GOT as some other ABI's do, which means that initialized function
|
||
pointers must reference the descriptor. Thus, a function pointer
|
||
initialized to the address of a function in a shared library will
|
||
either require a copy reloc, or a dynamic reloc. Using a copy reloc
|
||
redefines the function descriptor symbol to point to the copy. This
|
||
presents a problem as a plt entry for that function is also
|
||
initialized from the function descriptor symbol and the copy reloc
|
||
may not be initialized first. */
|
||
#define ELIMINATE_COPY_RELOCS 1
|
||
|
||
/* Section name for stubs is the associated section name plus this
|
||
string. */
|
||
#define STUB_SUFFIX ".stub"
|
||
|
||
/* Linker stubs.
|
||
ppc_stub_long_branch:
|
||
Used when a 14 bit branch (or even a 24 bit branch) can't reach its
|
||
destination, but a 24 bit branch in a stub section will reach.
|
||
. b dest
|
||
|
||
ppc_stub_plt_branch:
|
||
Similar to the above, but a 24 bit branch in the stub section won't
|
||
reach its destination.
|
||
. addis %r12,%r2,xxx@toc@ha
|
||
. ld %r11,xxx@toc@l(%r12)
|
||
. mtctr %r11
|
||
. bctr
|
||
|
||
ppc_stub_plt_call:
|
||
Used to call a function in a shared library.
|
||
. addis %r12,%r2,xxx@toc@ha
|
||
. std %r2,40(%r1)
|
||
. ld %r11,xxx+0@toc@l(%r12)
|
||
. ld %r2,xxx+8@toc@l(%r12)
|
||
. mtctr %r11
|
||
. ld %r11,xxx+16@toc@l(%r12)
|
||
. bctr
|
||
|
||
ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
|
||
code to adjust the value and save r2 to support multiple toc sections.
|
||
A ppc_stub_long_branch with an r2 offset looks like:
|
||
. std %r2,40(%r1)
|
||
. addis %r2,%r2,off@ha
|
||
. addi %r2,%r2,off@l
|
||
. b dest
|
||
|
||
A ppc_stub_plt_branch with an r2 offset looks like:
|
||
. std %r2,40(%r1)
|
||
. addis %r12,%r2,xxx@toc@ha
|
||
. ld %r11,xxx@toc@l(%r12)
|
||
. addis %r2,%r2,off@ha
|
||
. addi %r2,%r2,off@l
|
||
. mtctr %r11
|
||
. bctr
|
||
*/
|
||
|
||
enum ppc_stub_type {
|
||
ppc_stub_none,
|
||
ppc_stub_long_branch,
|
||
ppc_stub_long_branch_r2off,
|
||
ppc_stub_plt_branch,
|
||
ppc_stub_plt_branch_r2off,
|
||
ppc_stub_plt_call
|
||
};
|
||
|
||
struct ppc_stub_hash_entry {
|
||
|
||
/* Base hash table entry structure. */
|
||
struct bfd_hash_entry root;
|
||
|
||
enum ppc_stub_type stub_type;
|
||
|
||
/* The stub section. */
|
||
asection *stub_sec;
|
||
|
||
/* Offset within stub_sec of the beginning of this stub. */
|
||
bfd_vma stub_offset;
|
||
|
||
/* Given the symbol's value and its section we can determine its final
|
||
value when building the stubs (so the stub knows where to jump. */
|
||
bfd_vma target_value;
|
||
asection *target_section;
|
||
|
||
/* The symbol table entry, if any, that this was derived from. */
|
||
struct ppc_link_hash_entry *h;
|
||
|
||
/* And the reloc addend that this was derived from. */
|
||
bfd_vma addend;
|
||
|
||
/* Where this stub is being called from, or, in the case of combined
|
||
stub sections, the first input section in the group. */
|
||
asection *id_sec;
|
||
};
|
||
|
||
struct ppc_branch_hash_entry {
|
||
|
||
/* Base hash table entry structure. */
|
||
struct bfd_hash_entry root;
|
||
|
||
/* Offset within .branch_lt. */
|
||
unsigned int offset;
|
||
|
||
/* Generation marker. */
|
||
unsigned int iter;
|
||
};
|
||
|
||
struct ppc_link_hash_entry
|
||
{
|
||
struct elf_link_hash_entry elf;
|
||
|
||
/* A pointer to the most recently used stub hash entry against this
|
||
symbol. */
|
||
struct ppc_stub_hash_entry *stub_cache;
|
||
|
||
/* Track dynamic relocs copied for this symbol. */
|
||
struct ppc_dyn_relocs *dyn_relocs;
|
||
|
||
/* Link between function code and descriptor symbols. */
|
||
struct elf_link_hash_entry *oh;
|
||
|
||
/* Flag function code and descriptor symbols. */
|
||
unsigned int is_func:1;
|
||
unsigned int is_func_descriptor:1;
|
||
unsigned int is_entry:1;
|
||
|
||
/* Whether global opd sym has been adjusted or not. */
|
||
unsigned int adjust_done:1;
|
||
|
||
/* Contexts in which symbol is used in the GOT (or TOC).
|
||
TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
|
||
corresponding relocs are encountered during check_relocs.
|
||
tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
|
||
indicate the corresponding GOT entry type is not needed.
|
||
tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
|
||
a TPREL one. We use a separate flag rather than setting TPREL
|
||
just for convenience in distinguishing the two cases. */
|
||
#define TLS_GD 1 /* GD reloc. */
|
||
#define TLS_LD 2 /* LD reloc. */
|
||
#define TLS_TPREL 4 /* TPREL reloc, => IE. */
|
||
#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
|
||
#define TLS_TLS 16 /* Any TLS reloc. */
|
||
#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
|
||
#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
|
||
char tls_mask;
|
||
};
|
||
|
||
/* ppc64 ELF linker hash table. */
|
||
|
||
struct ppc_link_hash_table
|
||
{
|
||
struct elf_link_hash_table elf;
|
||
|
||
/* The stub hash table. */
|
||
struct bfd_hash_table stub_hash_table;
|
||
|
||
/* Another hash table for plt_branch stubs. */
|
||
struct bfd_hash_table branch_hash_table;
|
||
|
||
/* Linker stub bfd. */
|
||
bfd *stub_bfd;
|
||
|
||
/* Linker call-backs. */
|
||
asection * (*add_stub_section) (const char *, asection *);
|
||
void (*layout_sections_again) (void);
|
||
|
||
/* Array to keep track of which stub sections have been created, and
|
||
information on stub grouping. */
|
||
struct map_stub {
|
||
/* This is the section to which stubs in the group will be attached. */
|
||
asection *link_sec;
|
||
/* The stub section. */
|
||
asection *stub_sec;
|
||
/* Along with elf_gp, specifies the TOC pointer used in this group. */
|
||
bfd_vma toc_off;
|
||
} *stub_group;
|
||
|
||
/* Support for multiple toc sections. */
|
||
unsigned int no_multi_toc;
|
||
unsigned int multi_toc_needed;
|
||
|
||
/* Temp used when calculating TOC pointers. */
|
||
bfd_vma toc_curr;
|
||
|
||
/* Highest input section id. */
|
||
int top_id;
|
||
|
||
/* Highest output section index. */
|
||
int top_index;
|
||
|
||
/* List of input sections for each output section. */
|
||
asection **input_list;
|
||
|
||
/* Short-cuts to get to dynamic linker sections. */
|
||
asection *got;
|
||
asection *plt;
|
||
asection *relplt;
|
||
asection *dynbss;
|
||
asection *relbss;
|
||
asection *glink;
|
||
asection *sfpr;
|
||
asection *brlt;
|
||
asection *relbrlt;
|
||
|
||
/* Shortcut to .__tls_get_addr. */
|
||
struct elf_link_hash_entry *tls_get_addr;
|
||
|
||
/* Statistics. */
|
||
unsigned long stub_count[ppc_stub_plt_call];
|
||
|
||
/* Set if we should emit symbols for stubs. */
|
||
unsigned int emit_stub_syms;
|
||
|
||
/* Set on error. */
|
||
unsigned int stub_error;
|
||
|
||
/* Flag set when small branches are detected. Used to
|
||
select suitable defaults for the stub group size. */
|
||
unsigned int has_14bit_branch;
|
||
|
||
/* Set if we detect a reference undefined weak symbol. */
|
||
unsigned int have_undefweak;
|
||
|
||
/* Incremented every time we size stubs. */
|
||
unsigned int stub_iteration;
|
||
|
||
/* Small local sym to section mapping cache. */
|
||
struct sym_sec_cache sym_sec;
|
||
};
|
||
|
||
/* Get the ppc64 ELF linker hash table from a link_info structure. */
|
||
|
||
#define ppc_hash_table(p) \
|
||
((struct ppc_link_hash_table *) ((p)->hash))
|
||
|
||
#define ppc_stub_hash_lookup(table, string, create, copy) \
|
||
((struct ppc_stub_hash_entry *) \
|
||
bfd_hash_lookup ((table), (string), (create), (copy)))
|
||
|
||
#define ppc_branch_hash_lookup(table, string, create, copy) \
|
||
((struct ppc_branch_hash_entry *) \
|
||
bfd_hash_lookup ((table), (string), (create), (copy)))
|
||
|
||
/* Create an entry in the stub hash table. */
|
||
|
||
static struct bfd_hash_entry *
|
||
stub_hash_newfunc (struct bfd_hash_entry *entry,
|
||
struct bfd_hash_table *table,
|
||
const char *string)
|
||
{
|
||
/* Allocate the structure if it has not already been allocated by a
|
||
subclass. */
|
||
if (entry == NULL)
|
||
{
|
||
entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
|
||
if (entry == NULL)
|
||
return entry;
|
||
}
|
||
|
||
/* Call the allocation method of the superclass. */
|
||
entry = bfd_hash_newfunc (entry, table, string);
|
||
if (entry != NULL)
|
||
{
|
||
struct ppc_stub_hash_entry *eh;
|
||
|
||
/* Initialize the local fields. */
|
||
eh = (struct ppc_stub_hash_entry *) entry;
|
||
eh->stub_type = ppc_stub_none;
|
||
eh->stub_sec = NULL;
|
||
eh->stub_offset = 0;
|
||
eh->target_value = 0;
|
||
eh->target_section = NULL;
|
||
eh->h = NULL;
|
||
eh->id_sec = NULL;
|
||
}
|
||
|
||
return entry;
|
||
}
|
||
|
||
/* Create an entry in the branch hash table. */
|
||
|
||
static struct bfd_hash_entry *
|
||
branch_hash_newfunc (struct bfd_hash_entry *entry,
|
||
struct bfd_hash_table *table,
|
||
const char *string)
|
||
{
|
||
/* Allocate the structure if it has not already been allocated by a
|
||
subclass. */
|
||
if (entry == NULL)
|
||
{
|
||
entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
|
||
if (entry == NULL)
|
||
return entry;
|
||
}
|
||
|
||
/* Call the allocation method of the superclass. */
|
||
entry = bfd_hash_newfunc (entry, table, string);
|
||
if (entry != NULL)
|
||
{
|
||
struct ppc_branch_hash_entry *eh;
|
||
|
||
/* Initialize the local fields. */
|
||
eh = (struct ppc_branch_hash_entry *) entry;
|
||
eh->offset = 0;
|
||
eh->iter = 0;
|
||
}
|
||
|
||
return entry;
|
||
}
|
||
|
||
/* Create an entry in a ppc64 ELF linker hash table. */
|
||
|
||
static struct bfd_hash_entry *
|
||
link_hash_newfunc (struct bfd_hash_entry *entry,
|
||
struct bfd_hash_table *table,
|
||
const char *string)
|
||
{
|
||
/* Allocate the structure if it has not already been allocated by a
|
||
subclass. */
|
||
if (entry == NULL)
|
||
{
|
||
entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
|
||
if (entry == NULL)
|
||
return entry;
|
||
}
|
||
|
||
/* Call the allocation method of the superclass. */
|
||
entry = _bfd_elf_link_hash_newfunc (entry, table, string);
|
||
if (entry != NULL)
|
||
{
|
||
struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
|
||
|
||
eh->stub_cache = NULL;
|
||
eh->dyn_relocs = NULL;
|
||
eh->oh = NULL;
|
||
eh->is_func = 0;
|
||
eh->is_func_descriptor = 0;
|
||
eh->is_entry = 0;
|
||
eh->adjust_done = 0;
|
||
eh->tls_mask = 0;
|
||
}
|
||
|
||
return entry;
|
||
}
|
||
|
||
/* Create a ppc64 ELF linker hash table. */
|
||
|
||
static struct bfd_link_hash_table *
|
||
ppc64_elf_link_hash_table_create (bfd *abfd)
|
||
{
|
||
struct ppc_link_hash_table *htab;
|
||
bfd_size_type amt = sizeof (struct ppc_link_hash_table);
|
||
|
||
htab = bfd_zmalloc (amt);
|
||
if (htab == NULL)
|
||
return NULL;
|
||
|
||
if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
|
||
{
|
||
free (htab);
|
||
return NULL;
|
||
}
|
||
|
||
/* Init the stub hash table too. */
|
||
if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
|
||
return NULL;
|
||
|
||
/* And the branch hash table. */
|
||
if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
|
||
return NULL;
|
||
|
||
/* Initializing two fields of the union is just cosmetic. We really
|
||
only care about glist, but when compiled on a 32-bit host the
|
||
bfd_vma fields are larger. Setting the bfd_vma to zero makes
|
||
debugger inspection of these fields look nicer. */
|
||
htab->elf.init_refcount.refcount = 0;
|
||
htab->elf.init_refcount.glist = NULL;
|
||
htab->elf.init_offset.offset = 0;
|
||
htab->elf.init_offset.glist = NULL;
|
||
|
||
return &htab->elf.root;
|
||
}
|
||
|
||
/* Free the derived linker hash table. */
|
||
|
||
static void
|
||
ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
|
||
{
|
||
struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
|
||
|
||
bfd_hash_table_free (&ret->stub_hash_table);
|
||
bfd_hash_table_free (&ret->branch_hash_table);
|
||
_bfd_generic_link_hash_table_free (hash);
|
||
}
|
||
|
||
/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
|
||
|
||
void
|
||
ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
|
||
{
|
||
struct ppc_link_hash_table *htab;
|
||
|
||
elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
|
||
|
||
/* Always hook our dynamic sections into the first bfd, which is the
|
||
linker created stub bfd. This ensures that the GOT header is at
|
||
the start of the output TOC section. */
|
||
htab = ppc_hash_table (info);
|
||
htab->stub_bfd = abfd;
|
||
htab->elf.dynobj = abfd;
|
||
}
|
||
|
||
/* Build a name for an entry in the stub hash table. */
|
||
|
||
static char *
|
||
ppc_stub_name (const asection *input_section,
|
||
const asection *sym_sec,
|
||
const struct ppc_link_hash_entry *h,
|
||
const Elf_Internal_Rela *rel)
|
||
{
|
||
char *stub_name;
|
||
bfd_size_type len;
|
||
|
||
/* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
|
||
offsets from a sym as a branch target? In fact, we could
|
||
probably assume the addend is always zero. */
|
||
BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
|
||
|
||
if (h)
|
||
{
|
||
len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
|
||
stub_name = bfd_malloc (len);
|
||
if (stub_name != NULL)
|
||
{
|
||
sprintf (stub_name, "%08x.%s+%x",
|
||
input_section->id & 0xffffffff,
|
||
h->elf.root.root.string,
|
||
(int) rel->r_addend & 0xffffffff);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
|
||
stub_name = bfd_malloc (len);
|
||
if (stub_name != NULL)
|
||
{
|
||
sprintf (stub_name, "%08x.%x:%x+%x",
|
||
input_section->id & 0xffffffff,
|
||
sym_sec->id & 0xffffffff,
|
||
(int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
|
||
(int) rel->r_addend & 0xffffffff);
|
||
}
|
||
}
|
||
return stub_name;
|
||
}
|
||
|
||
/* Look up an entry in the stub hash. Stub entries are cached because
|
||
creating the stub name takes a bit of time. */
|
||
|
||
static struct ppc_stub_hash_entry *
|
||
ppc_get_stub_entry (const asection *input_section,
|
||
const asection *sym_sec,
|
||
struct elf_link_hash_entry *hash,
|
||
const Elf_Internal_Rela *rel,
|
||
struct ppc_link_hash_table *htab)
|
||
{
|
||
struct ppc_stub_hash_entry *stub_entry;
|
||
struct ppc_link_hash_entry *h = (struct ppc_link_hash_entry *) hash;
|
||
const asection *id_sec;
|
||
|
||
/* If this input section is part of a group of sections sharing one
|
||
stub section, then use the id of the first section in the group.
|
||
Stub names need to include a section id, as there may well be
|
||
more than one stub used to reach say, printf, and we need to
|
||
distinguish between them. */
|
||
id_sec = htab->stub_group[input_section->id].link_sec;
|
||
|
||
if (h != NULL && h->stub_cache != NULL
|
||
&& h->stub_cache->h == h
|
||
&& h->stub_cache->id_sec == id_sec)
|
||
{
|
||
stub_entry = h->stub_cache;
|
||
}
|
||
else
|
||
{
|
||
char *stub_name;
|
||
|
||
stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
|
||
if (stub_name == NULL)
|
||
return NULL;
|
||
|
||
stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
|
||
stub_name, FALSE, FALSE);
|
||
if (h != NULL)
|
||
h->stub_cache = stub_entry;
|
||
|
||
free (stub_name);
|
||
}
|
||
|
||
return stub_entry;
|
||
}
|
||
|
||
/* Add a new stub entry to the stub hash. Not all fields of the new
|
||
stub entry are initialised. */
|
||
|
||
static struct ppc_stub_hash_entry *
|
||
ppc_add_stub (const char *stub_name,
|
||
asection *section,
|
||
struct ppc_link_hash_table *htab)
|
||
{
|
||
asection *link_sec;
|
||
asection *stub_sec;
|
||
struct ppc_stub_hash_entry *stub_entry;
|
||
|
||
link_sec = htab->stub_group[section->id].link_sec;
|
||
stub_sec = htab->stub_group[section->id].stub_sec;
|
||
if (stub_sec == NULL)
|
||
{
|
||
stub_sec = htab->stub_group[link_sec->id].stub_sec;
|
||
if (stub_sec == NULL)
|
||
{
|
||
size_t namelen;
|
||
bfd_size_type len;
|
||
char *s_name;
|
||
|
||
namelen = strlen (link_sec->name);
|
||
len = namelen + sizeof (STUB_SUFFIX);
|
||
s_name = bfd_alloc (htab->stub_bfd, len);
|
||
if (s_name == NULL)
|
||
return NULL;
|
||
|
||
memcpy (s_name, link_sec->name, namelen);
|
||
memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
|
||
stub_sec = (*htab->add_stub_section) (s_name, link_sec);
|
||
if (stub_sec == NULL)
|
||
return NULL;
|
||
htab->stub_group[link_sec->id].stub_sec = stub_sec;
|
||
}
|
||
htab->stub_group[section->id].stub_sec = stub_sec;
|
||
}
|
||
|
||
/* Enter this entry into the linker stub hash table. */
|
||
stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
|
||
TRUE, FALSE);
|
||
if (stub_entry == NULL)
|
||
{
|
||
(*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
|
||
bfd_archive_filename (section->owner),
|
||
stub_name);
|
||
return NULL;
|
||
}
|
||
|
||
stub_entry->stub_sec = stub_sec;
|
||
stub_entry->stub_offset = 0;
|
||
stub_entry->id_sec = link_sec;
|
||
return stub_entry;
|
||
}
|
||
|
||
/* Create sections for linker generated code. */
|
||
|
||
static bfd_boolean
|
||
create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
|
||
{
|
||
struct ppc_link_hash_table *htab;
|
||
flagword flags;
|
||
|
||
htab = ppc_hash_table (info);
|
||
|
||
/* Create .sfpr for code to save and restore fp regs. */
|
||
flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
|
||
| SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
||
htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr");
|
||
if (htab->sfpr == NULL
|
||
|| ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
|
||
|| ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
|
||
return FALSE;
|
||
|
||
/* Create .glink for lazy dynamic linking support. */
|
||
htab->glink = bfd_make_section_anyway (dynobj, ".glink");
|
||
if (htab->glink == NULL
|
||
|| ! bfd_set_section_flags (dynobj, htab->glink, flags)
|
||
|| ! bfd_set_section_alignment (dynobj, htab->glink, 2))
|
||
return FALSE;
|
||
|
||
/* Create .branch_lt for plt_branch stubs. */
|
||
flags = (SEC_ALLOC | SEC_LOAD
|
||
| SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
||
htab->brlt = bfd_make_section_anyway (dynobj, ".branch_lt");
|
||
if (htab->brlt == NULL
|
||
|| ! bfd_set_section_flags (dynobj, htab->brlt, flags)
|
||
|| ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
|
||
return FALSE;
|
||
|
||
if (info->shared)
|
||
{
|
||
flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
|
||
| SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
||
htab->relbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt");
|
||
if (!htab->relbrlt
|
||
|| ! bfd_set_section_flags (dynobj, htab->relbrlt, flags)
|
||
|| ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
|
||
return FALSE;
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
|
||
not already done. */
|
||
|
||
static bfd_boolean
|
||
create_got_section (bfd *abfd, struct bfd_link_info *info)
|
||
{
|
||
asection *got, *relgot;
|
||
flagword flags;
|
||
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
||
|
||
if (!htab->got)
|
||
{
|
||
if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
|
||
return FALSE;
|
||
|
||
htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
|
||
if (!htab->got)
|
||
abort ();
|
||
}
|
||
|
||
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
|
||
| SEC_LINKER_CREATED);
|
||
|
||
got = bfd_make_section (abfd, ".got");
|
||
if (!got
|
||
|| !bfd_set_section_flags (abfd, got, flags)
|
||
|| !bfd_set_section_alignment (abfd, got, 3))
|
||
return FALSE;
|
||
|
||
relgot = bfd_make_section (abfd, ".rela.got");
|
||
if (!relgot
|
||
|| ! bfd_set_section_flags (abfd, relgot, flags | SEC_READONLY)
|
||
|| ! bfd_set_section_alignment (abfd, relgot, 3))
|
||
return FALSE;
|
||
|
||
ppc64_elf_tdata (abfd)->got = got;
|
||
ppc64_elf_tdata (abfd)->relgot = relgot;
|
||
return TRUE;
|
||
}
|
||
|
||
/* Create the dynamic sections, and set up shortcuts. */
|
||
|
||
static bfd_boolean
|
||
ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
|
||
{
|
||
struct ppc_link_hash_table *htab;
|
||
|
||
if (!_bfd_elf_create_dynamic_sections (dynobj, info))
|
||
return FALSE;
|
||
|
||
htab = ppc_hash_table (info);
|
||
if (!htab->got)
|
||
htab->got = bfd_get_section_by_name (dynobj, ".got");
|
||
htab->plt = bfd_get_section_by_name (dynobj, ".plt");
|
||
htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
|
||
htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
|
||
if (!info->shared)
|
||
htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
|
||
|
||
if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
|
||
|| (!info->shared && !htab->relbss))
|
||
abort ();
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Copy the extra info we tack onto an elf_link_hash_entry. */
|
||
|
||
static void
|
||
ppc64_elf_copy_indirect_symbol
|
||
(const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
|
||
struct elf_link_hash_entry *dir,
|
||
struct elf_link_hash_entry *ind)
|
||
{
|
||
struct ppc_link_hash_entry *edir, *eind;
|
||
flagword mask;
|
||
|
||
edir = (struct ppc_link_hash_entry *) dir;
|
||
eind = (struct ppc_link_hash_entry *) ind;
|
||
|
||
/* Copy over any dynamic relocs we may have on the indirect sym. */
|
||
if (eind->dyn_relocs != NULL)
|
||
{
|
||
if (edir->dyn_relocs != NULL)
|
||
{
|
||
struct ppc_dyn_relocs **pp;
|
||
struct ppc_dyn_relocs *p;
|
||
|
||
if (eind->elf.root.type == bfd_link_hash_indirect)
|
||
abort ();
|
||
|
||
/* Add reloc counts against the weak sym to the strong sym
|
||
list. Merge any entries against the same section. */
|
||
for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
|
||
{
|
||
struct ppc_dyn_relocs *q;
|
||
|
||
for (q = edir->dyn_relocs; q != NULL; q = q->next)
|
||
if (q->sec == p->sec)
|
||
{
|
||
q->pc_count += p->pc_count;
|
||
q->count += p->count;
|
||
*pp = p->next;
|
||
break;
|
||
}
|
||
if (q == NULL)
|
||
pp = &p->next;
|
||
}
|
||
*pp = edir->dyn_relocs;
|
||
}
|
||
|
||
edir->dyn_relocs = eind->dyn_relocs;
|
||
eind->dyn_relocs = NULL;
|
||
}
|
||
|
||
edir->is_func |= eind->is_func;
|
||
edir->is_func_descriptor |= eind->is_func_descriptor;
|
||
edir->is_entry |= eind->is_entry;
|
||
edir->tls_mask |= eind->tls_mask;
|
||
|
||
mask = (ELF_LINK_HASH_REF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR
|
||
| ELF_LINK_HASH_REF_REGULAR_NONWEAK | ELF_LINK_NON_GOT_REF
|
||
| ELF_LINK_HASH_NEEDS_PLT);
|
||
/* If called to transfer flags for a weakdef during processing
|
||
of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
|
||
We clear it ourselves for ELIMINATE_COPY_RELOCS. */
|
||
if (ELIMINATE_COPY_RELOCS
|
||
&& eind->elf.root.type != bfd_link_hash_indirect
|
||
&& (edir->elf.elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0)
|
||
mask &= ~ELF_LINK_NON_GOT_REF;
|
||
|
||
edir->elf.elf_link_hash_flags |= eind->elf.elf_link_hash_flags & mask;
|
||
|
||
/* If we were called to copy over info for a weak sym, that's all. */
|
||
if (eind->elf.root.type != bfd_link_hash_indirect)
|
||
return;
|
||
|
||
/* Copy over got entries that we may have already seen to the
|
||
symbol which just became indirect. */
|
||
if (eind->elf.got.glist != NULL)
|
||
{
|
||
if (edir->elf.got.glist != NULL)
|
||
{
|
||
struct got_entry **entp;
|
||
struct got_entry *ent;
|
||
|
||
for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
|
||
{
|
||
struct got_entry *dent;
|
||
|
||
for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
|
||
if (dent->addend == ent->addend
|
||
&& dent->owner == ent->owner
|
||
&& dent->tls_type == ent->tls_type)
|
||
{
|
||
dent->got.refcount += ent->got.refcount;
|
||
*entp = ent->next;
|
||
break;
|
||
}
|
||
if (dent == NULL)
|
||
entp = &ent->next;
|
||
}
|
||
*entp = edir->elf.got.glist;
|
||
}
|
||
|
||
edir->elf.got.glist = eind->elf.got.glist;
|
||
eind->elf.got.glist = NULL;
|
||
}
|
||
|
||
/* And plt entries. */
|
||
if (eind->elf.plt.plist != NULL)
|
||
{
|
||
if (edir->elf.plt.plist != NULL)
|
||
{
|
||
struct plt_entry **entp;
|
||
struct plt_entry *ent;
|
||
|
||
for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
|
||
{
|
||
struct plt_entry *dent;
|
||
|
||
for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
|
||
if (dent->addend == ent->addend)
|
||
{
|
||
dent->plt.refcount += ent->plt.refcount;
|
||
*entp = ent->next;
|
||
break;
|
||
}
|
||
if (dent == NULL)
|
||
entp = &ent->next;
|
||
}
|
||
*entp = edir->elf.plt.plist;
|
||
}
|
||
|
||
edir->elf.plt.plist = eind->elf.plt.plist;
|
||
eind->elf.plt.plist = NULL;
|
||
}
|
||
|
||
if (edir->elf.dynindx == -1)
|
||
{
|
||
edir->elf.dynindx = eind->elf.dynindx;
|
||
edir->elf.dynstr_index = eind->elf.dynstr_index;
|
||
eind->elf.dynindx = -1;
|
||
eind->elf.dynstr_index = 0;
|
||
}
|
||
else
|
||
BFD_ASSERT (eind->elf.dynindx == -1);
|
||
}
|
||
|
||
/* Set a flag, used by ppc64_elf_gc_mark_hook, on the entry symbol and
|
||
symbols undefined on the command-line. */
|
||
|
||
bfd_boolean
|
||
ppc64_elf_mark_entry_syms (struct bfd_link_info *info)
|
||
{
|
||
struct ppc_link_hash_table *htab;
|
||
struct bfd_sym_chain *sym;
|
||
|
||
htab = ppc_hash_table (info);
|
||
for (sym = info->gc_sym_list; sym; sym = sym->next)
|
||
{
|
||
struct elf_link_hash_entry *h;
|
||
|
||
h = elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
|
||
if (h != NULL)
|
||
((struct ppc_link_hash_entry *) h)->is_entry = 1;
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/* Hack symbols defined in .opd sections to be function type. */
|
||
|
||
static bfd_boolean
|
||
ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
|
||
struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
||
Elf_Internal_Sym *isym,
|
||
const char **name ATTRIBUTE_UNUSED,
|
||
flagword *flags ATTRIBUTE_UNUSED,
|
||
asection **sec,
|
||
bfd_vma *value ATTRIBUTE_UNUSED)
|
||
{
|
||
if (strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
|
||
isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
|
||
return TRUE;
|
||
}
|
||
|
||
static bfd_boolean
|
||
update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
|
||
unsigned long r_symndx, bfd_vma r_addend, int tls_type)
|
||
{
|
||
struct got_entry **local_got_ents = elf_local_got_ents (abfd);
|
||
char *local_got_tls_masks;
|
||
|
||
if (local_got_ents == NULL)
|
||
{
|
||
bfd_size_type size = symtab_hdr->sh_info;
|
||
|
||
size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
|
||
local_got_ents = bfd_zalloc (abfd, size);
|
||
if (local_got_ents == NULL)
|
||
return FALSE;
|
||
elf_local_got_ents (abfd) = local_got_ents;
|
||
}
|
||
|
||
if ((tls_type & TLS_EXPLICIT) == 0)
|
||
{
|
||
struct got_entry *ent;
|
||
|
||
for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
|
||
if (ent->addend == r_addend
|
||
&& ent->owner == abfd
|
||
&& ent->tls_type == tls_type)
|
||
break;
|
||
if (ent == NULL)
|
||
{
|
||
bfd_size_type amt = sizeof (*ent);
|
||
ent = bfd_alloc (abfd, amt);
|
||
if (ent == NULL)
|
||
return FALSE;
|
||
ent->next = local_got_ents[r_symndx];
|
||
ent->addend = r_addend;
|
||
ent->owner = abfd;
|
||
ent->tls_type = tls_type;
|
||
ent->got.refcount = 0;
|
||
local_got_ents[r_symndx] = ent;
|
||
}
|
||
ent->got.refcount += 1;
|
||
}
|
||
|
||
local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
|
||
local_got_tls_masks[r_symndx] |= tls_type;
|
||
return TRUE;
|
||
}
|
||
|
||
static bfd_boolean
|
||
update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
|
||
{
|
||
struct plt_entry *ent;
|
||
|
||
for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
|
||
if (ent->addend == addend)
|
||
break;
|
||
if (ent == NULL)
|
||
{
|
||
bfd_size_type amt = sizeof (*ent);
|
||
ent = bfd_alloc (abfd, amt);
|
||
if (ent == NULL)
|
||
return FALSE;
|
||
ent->next = eh->elf.plt.plist;
|
||
ent->addend = addend;
|
||
ent->plt.refcount = 0;
|
||
eh->elf.plt.plist = ent;
|
||
}
|
||
ent->plt.refcount += 1;
|
||
eh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
|
||
eh->is_func = 1;
|
||
return TRUE;
|
||
}
|
||
|
||
/* Find the function descriptor hash entry from the given function code
|
||
hash entry FH. Link the entries via their OH fields. */
|
||
static struct ppc_link_hash_entry *
|
||
get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
|
||
{
|
||
struct ppc_link_hash_entry *fdh = (struct ppc_link_hash_entry *) fh->oh;
|
||
|
||
if (fdh == NULL)
|
||
{
|
||
const char *fd_name = fh->elf.root.root.string + 1;
|
||
|
||
fdh = (struct ppc_link_hash_entry *)
|
||
elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
|
||
if (fdh != NULL)
|
||
{
|
||
fdh->is_func_descriptor = 1;
|
||
fdh->oh = &fh->elf;
|
||
fh->is_func = 1;
|
||
fh->oh = &fdh->elf;
|
||
}
|
||
}
|
||
|
||
return fdh;
|
||
}
|
||
|
||
/* Look through the relocs for a section during the first phase, and
|
||
calculate needed space in the global offset table, procedure
|
||
linkage table, and dynamic reloc sections. */
|
||
|
||
static bfd_boolean
|
||
ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
|
||
asection *sec, const Elf_Internal_Rela *relocs)
|
||
{
|
||
struct ppc_link_hash_table *htab;
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
|
||
const Elf_Internal_Rela *rel;
|
||
const Elf_Internal_Rela *rel_end;
|
||
asection *sreloc;
|
||
asection **opd_sym_map;
|
||
|
||
if (info->relocatable)
|
||
return TRUE;
|
||
|
||
/* Don't do anything special with non-loaded, non-alloced sections.
|
||
In particular, any relocs in such sections should not affect GOT
|
||
and PLT reference counting (ie. we don't allow them to create GOT
|
||
or PLT entries), there's no possibility or desire to optimize TLS
|
||
relocs, and there's not much point in propagating relocs to shared
|
||
libs that the dynamic linker won't relocate. */
|
||
if ((sec->flags & SEC_ALLOC) == 0)
|
||
return TRUE;
|
||
|
||
htab = ppc_hash_table (info);
|
||
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
||
|
||
sym_hashes = elf_sym_hashes (abfd);
|
||
sym_hashes_end = (sym_hashes
|
||
+ symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
|
||
- symtab_hdr->sh_info);
|
||
|
||
sreloc = NULL;
|
||
opd_sym_map = NULL;
|
||
if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
|
||
{
|
||
/* Garbage collection needs some extra help with .opd sections.
|
||
We don't want to necessarily keep everything referenced by
|
||
relocs in .opd, as that would keep all functions. Instead,
|
||
if we reference an .opd symbol (a function descriptor), we
|
||
want to keep the function code symbol's section. This is
|
||
easy for global symbols, but for local syms we need to keep
|
||
information about the associated function section. Later, if
|
||
edit_opd deletes entries, we'll use this array to adjust
|
||
local syms in .opd. */
|
||
union opd_info {
|
||
asection *func_section;
|
||
long entry_adjust;
|
||
};
|
||
bfd_size_type amt;
|
||
|
||
amt = sec->size * sizeof (union opd_info) / 24;
|
||
opd_sym_map = bfd_zalloc (abfd, amt);
|
||
if (opd_sym_map == NULL)
|
||
return FALSE;
|
||
ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
|
||
}
|
||
|
||
if (htab->sfpr == NULL
|
||
&& !create_linkage_sections (htab->elf.dynobj, info))
|
||
return FALSE;
|
||
|
||
rel_end = relocs + sec->reloc_count;
|
||
for (rel = relocs; rel < rel_end; rel++)
|
||
{
|
||
unsigned long r_symndx;
|
||
struct elf_link_hash_entry *h;
|
||
enum elf_ppc64_reloc_type r_type;
|
||
int tls_type = 0;
|
||
|
||
r_symndx = ELF64_R_SYM (rel->r_info);
|
||
if (r_symndx < symtab_hdr->sh_info)
|
||
h = NULL;
|
||
else
|
||
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
||
|
||
r_type = ELF64_R_TYPE (rel->r_info);
|
||
switch (r_type)
|
||
{
|
||
case R_PPC64_GOT_TLSLD16:
|
||
case R_PPC64_GOT_TLSLD16_LO:
|
||
case R_PPC64_GOT_TLSLD16_HI:
|
||
case R_PPC64_GOT_TLSLD16_HA:
|
||
ppc64_tlsld_got (abfd)->refcount += 1;
|
||
tls_type = TLS_TLS | TLS_LD;
|
||
goto dogottls;
|
||
|
||
case R_PPC64_GOT_TLSGD16:
|
||
case R_PPC64_GOT_TLSGD16_LO:
|
||
case R_PPC64_GOT_TLSGD16_HI:
|
||
case R_PPC64_GOT_TLSGD16_HA:
|
||
tls_type = TLS_TLS | TLS_GD;
|
||
goto dogottls;
|
||
|
||
case R_PPC64_GOT_TPREL16_DS:
|
||
case R_PPC64_GOT_TPREL16_LO_DS:
|
||
case R_PPC64_GOT_TPREL16_HI:
|
||
case R_PPC64_GOT_TPREL16_HA:
|
||
if (info->shared)
|
||
info->flags |= DF_STATIC_TLS;
|
||
tls_type = TLS_TLS | TLS_TPREL;
|
||
goto dogottls;
|
||
|
||
case R_PPC64_GOT_DTPREL16_DS:
|
||
case R_PPC64_GOT_DTPREL16_LO_DS:
|
||
case R_PPC64_GOT_DTPREL16_HI:
|
||
case R_PPC64_GOT_DTPREL16_HA:
|
||
tls_type = TLS_TLS | TLS_DTPREL;
|
||
dogottls:
|
||
sec->has_tls_reloc = 1;
|
||
/* Fall thru */
|
||
|
||
case R_PPC64_GOT16:
|
||
case R_PPC64_GOT16_DS:
|
||
case R_PPC64_GOT16_HA:
|
||
case R_PPC64_GOT16_HI:
|
||
case R_PPC64_GOT16_LO:
|
||
case R_PPC64_GOT16_LO_DS:
|
||
/* This symbol requires a global offset table entry. */
|
||
sec->has_gp_reloc = 1;
|
||
if (ppc64_elf_tdata (abfd)->got == NULL
|
||
&& !create_got_section (abfd, info))
|
||
return FALSE;
|
||
|
||
if (h != NULL)
|
||
{
|
||
struct ppc_link_hash_entry *eh;
|
||
struct got_entry *ent;
|
||
|
||
eh = (struct ppc_link_hash_entry *) h;
|
||
for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
|
||
if (ent->addend == rel->r_addend
|
||
&& ent->owner == abfd
|
||
&& ent->tls_type == tls_type)
|
||
break;
|
||
if (ent == NULL)
|
||
{
|
||
bfd_size_type amt = sizeof (*ent);
|
||
ent = bfd_alloc (abfd, amt);
|
||
if (ent == NULL)
|
||
return FALSE;
|
||
ent->next = eh->elf.got.glist;
|
||
ent->addend = rel->r_addend;
|
||
ent->owner = abfd;
|
||
ent->tls_type = tls_type;
|
||
ent->got.refcount = 0;
|
||
eh->elf.got.glist = ent;
|
||
}
|
||
ent->got.refcount += 1;
|
||
eh->tls_mask |= tls_type;
|
||
}
|
||
else
|
||
/* This is a global offset table entry for a local symbol. */
|
||
if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
|
||
rel->r_addend, tls_type))
|
||
return FALSE;
|
||
break;
|
||
|
||
case R_PPC64_PLT16_HA:
|
||
case R_PPC64_PLT16_HI:
|
||
case R_PPC64_PLT16_LO:
|
||
case R_PPC64_PLT32:
|
||
case R_PPC64_PLT64:
|
||
/* This symbol requires a procedure linkage table entry. We
|
||
actually build the entry in adjust_dynamic_symbol,
|
||
because this might be a case of linking PIC code without
|
||
linking in any dynamic objects, in which case we don't
|
||
need to generate a procedure linkage table after all. */
|
||
if (h == NULL)
|
||
{
|
||
/* It does not make sense to have a procedure linkage
|
||
table entry for a local symbol. */
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return FALSE;
|
||
}
|
||
else
|
||
if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
|
||
rel->r_addend))
|
||
return FALSE;
|
||
break;
|
||
|
||
/* The following relocations don't need to propagate the
|
||
relocation if linking a shared object since they are
|
||
section relative. */
|
||
case R_PPC64_SECTOFF:
|
||
case R_PPC64_SECTOFF_LO:
|
||
case R_PPC64_SECTOFF_HI:
|
||
case R_PPC64_SECTOFF_HA:
|
||
case R_PPC64_SECTOFF_DS:
|
||
case R_PPC64_SECTOFF_LO_DS:
|
||
case R_PPC64_DTPREL16:
|
||
case R_PPC64_DTPREL16_LO:
|
||
case R_PPC64_DTPREL16_HI:
|
||
case R_PPC64_DTPREL16_HA:
|
||
case R_PPC64_DTPREL16_DS:
|
||
case R_PPC64_DTPREL16_LO_DS:
|
||
case R_PPC64_DTPREL16_HIGHER:
|
||
case R_PPC64_DTPREL16_HIGHERA:
|
||
case R_PPC64_DTPREL16_HIGHEST:
|
||
case R_PPC64_DTPREL16_HIGHESTA:
|
||
break;
|
||
|
||
/* Nor do these. */
|
||
case R_PPC64_TOC16:
|
||
case R_PPC64_TOC16_LO:
|
||
case R_PPC64_TOC16_HI:
|
||
case R_PPC64_TOC16_HA:
|
||
case R_PPC64_TOC16_DS:
|
||
case R_PPC64_TOC16_LO_DS:
|
||
sec->has_gp_reloc = 1;
|
||
break;
|
||
|
||
/* This relocation describes the C++ object vtable hierarchy.
|
||
Reconstruct it for later use during GC. */
|
||
case R_PPC64_GNU_VTINHERIT:
|
||
if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
||
return FALSE;
|
||
break;
|
||
|
||
/* This relocation describes which C++ vtable entries are actually
|
||
used. Record for later use during GC. */
|
||
case R_PPC64_GNU_VTENTRY:
|
||
if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
||
return FALSE;
|
||
break;
|
||
|
||
case R_PPC64_REL14:
|
||
case R_PPC64_REL14_BRTAKEN:
|
||
case R_PPC64_REL14_BRNTAKEN:
|
||
htab->has_14bit_branch = 1;
|
||
/* Fall through. */
|
||
|
||
case R_PPC64_REL24:
|
||
if (h != NULL
|
||
&& h->root.root.string[0] == '.'
|
||
&& h->root.root.string[1] != 0)
|
||
{
|
||
/* We may need a .plt entry if the function this reloc
|
||
refers to is in a shared lib. */
|
||
if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
|
||
rel->r_addend))
|
||
return FALSE;
|
||
if (h == htab->tls_get_addr)
|
||
sec->has_tls_reloc = 1;
|
||
else if ((strncmp (h->root.root.string, ".__tls_get_addr", 15)
|
||
== 0)
|
||
&& (h->root.root.string[15] == 0
|
||
|| h->root.root.string[15] == '@'))
|
||
{
|
||
htab->tls_get_addr = h;
|
||
sec->has_tls_reloc = 1;
|
||
}
|
||
}
|
||
break;
|
||
|
||
case R_PPC64_TPREL64:
|
||
tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
|
||
if (info->shared)
|
||
info->flags |= DF_STATIC_TLS;
|
||
goto dotlstoc;
|
||
|
||
case R_PPC64_DTPMOD64:
|
||
if (rel + 1 < rel_end
|
||
&& rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
|
||
&& rel[1].r_offset == rel->r_offset + 8)
|
||
tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
|
||
else
|
||
tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
|
||
goto dotlstoc;
|
||
|
||
case R_PPC64_DTPREL64:
|
||
tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
|
||
if (rel != relocs
|
||
&& rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
|
||
&& rel[-1].r_offset == rel->r_offset - 8)
|
||
/* This is the second reloc of a dtpmod, dtprel pair.
|
||
Don't mark with TLS_DTPREL. */
|
||
goto dodyn;
|
||
|
||
dotlstoc:
|
||
sec->has_tls_reloc = 1;
|
||
if (h != NULL)
|
||
{
|
||
struct ppc_link_hash_entry *eh;
|
||
eh = (struct ppc_link_hash_entry *) h;
|
||
eh->tls_mask |= tls_type;
|
||
}
|
||
else
|
||
if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
|
||
rel->r_addend, tls_type))
|
||
return FALSE;
|
||
|
||
if (ppc64_elf_section_data (sec)->t_symndx == NULL)
|
||
{
|
||
/* One extra to simplify get_tls_mask. */
|
||
bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
|
||
ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
|
||
if (ppc64_elf_section_data (sec)->t_symndx == NULL)
|
||
return FALSE;
|
||
}
|
||
BFD_ASSERT (rel->r_offset % 8 == 0);
|
||
ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
|
||
|
||
/* Mark the second slot of a GD or LD entry.
|
||
-1 to indicate GD and -2 to indicate LD. */
|
||
if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
|
||
ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
|
||
else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
|
||
ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
|
||
goto dodyn;
|
||
|
||
case R_PPC64_TPREL16:
|
||
case R_PPC64_TPREL16_LO:
|
||
case R_PPC64_TPREL16_HI:
|
||
case R_PPC64_TPREL16_HA:
|
||
case R_PPC64_TPREL16_DS:
|
||
case R_PPC64_TPREL16_LO_DS:
|
||
case R_PPC64_TPREL16_HIGHER:
|
||
case R_PPC64_TPREL16_HIGHERA:
|
||
case R_PPC64_TPREL16_HIGHEST:
|
||
case R_PPC64_TPREL16_HIGHESTA:
|
||
if (info->shared)
|
||
{
|
||
info->flags |= DF_STATIC_TLS;
|
||
goto dodyn;
|
||
}
|
||
break;
|
||
|
||
case R_PPC64_ADDR64:
|
||
if (opd_sym_map != NULL
|
||
&& h != NULL
|
||
&& h->root.root.string[0] == '.'
|
||
&& h->root.root.string[1] != 0)
|
||
get_fdh ((struct ppc_link_hash_entry *) h, htab);
|
||
|
||
if (opd_sym_map != NULL
|
||
&& h == NULL
|
||
&& rel + 1 < rel_end
|
||
&& ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
|
||
{
|
||
asection *s;
|
||
|
||
s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
|
||
r_symndx);
|
||
if (s == NULL)
|
||
return FALSE;
|
||
else if (s != sec)
|
||
opd_sym_map[rel->r_offset / 24] = s;
|
||
}
|
||
/* Fall through. */
|
||
|
||
case R_PPC64_REL30:
|
||
case R_PPC64_REL32:
|
||
case R_PPC64_REL64:
|
||
case R_PPC64_ADDR14:
|
||
case R_PPC64_ADDR14_BRNTAKEN:
|
||
case R_PPC64_ADDR14_BRTAKEN:
|
||
case R_PPC64_ADDR16:
|
||
case R_PPC64_ADDR16_DS:
|
||
case R_PPC64_ADDR16_HA:
|
||
case R_PPC64_ADDR16_HI:
|
||
case R_PPC64_ADDR16_HIGHER:
|
||
case R_PPC64_ADDR16_HIGHERA:
|
||
case R_PPC64_ADDR16_HIGHEST:
|
||
case R_PPC64_ADDR16_HIGHESTA:
|
||
case R_PPC64_ADDR16_LO:
|
||
case R_PPC64_ADDR16_LO_DS:
|
||
case R_PPC64_ADDR24:
|
||
case R_PPC64_ADDR32:
|
||
case R_PPC64_UADDR16:
|
||
case R_PPC64_UADDR32:
|
||
case R_PPC64_UADDR64:
|
||
case R_PPC64_TOC:
|
||
if (h != NULL && !info->shared)
|
||
/* We may need a copy reloc. */
|
||
h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
|
||
|
||
/* Don't propagate .opd relocs. */
|
||
if (NO_OPD_RELOCS && opd_sym_map != NULL)
|
||
break;
|
||
|
||
/* If we are creating a shared library, and this is a reloc
|
||
against a global symbol, or a non PC relative reloc
|
||
against a local symbol, then we need to copy the reloc
|
||
into the shared library. However, if we are linking with
|
||
-Bsymbolic, we do not need to copy a reloc against a
|
||
global symbol which is defined in an object we are
|
||
including in the link (i.e., DEF_REGULAR is set). At
|
||
this point we have not seen all the input files, so it is
|
||
possible that DEF_REGULAR is not set now but will be set
|
||
later (it is never cleared). In case of a weak definition,
|
||
DEF_REGULAR may be cleared later by a strong definition in
|
||
a shared library. We account for that possibility below by
|
||
storing information in the dyn_relocs field of the hash
|
||
table entry. A similar situation occurs when creating
|
||
shared libraries and symbol visibility changes render the
|
||
symbol local.
|
||
|
||
If on the other hand, we are creating an executable, we
|
||
may need to keep relocations for symbols satisfied by a
|
||
dynamic library if we manage to avoid copy relocs for the
|
||
symbol. */
|
||
dodyn:
|
||
if ((info->shared
|
||
&& (MUST_BE_DYN_RELOC (r_type)
|
||
|| (h != NULL
|
||
&& (! info->symbolic
|
||
|| h->root.type == bfd_link_hash_defweak
|
||
|| (h->elf_link_hash_flags
|
||
& ELF_LINK_HASH_DEF_REGULAR) == 0))))
|
||
|| (ELIMINATE_COPY_RELOCS
|
||
&& !info->shared
|
||
&& h != NULL
|
||
&& (h->root.type == bfd_link_hash_defweak
|
||
|| (h->elf_link_hash_flags
|
||
& ELF_LINK_HASH_DEF_REGULAR) == 0)))
|
||
{
|
||
struct ppc_dyn_relocs *p;
|
||
struct ppc_dyn_relocs **head;
|
||
|
||
/* We must copy these reloc types into the output file.
|
||
Create a reloc section in dynobj and make room for
|
||
this reloc. */
|
||
if (sreloc == NULL)
|
||
{
|
||
const char *name;
|
||
bfd *dynobj;
|
||
|
||
name = (bfd_elf_string_from_elf_section
|
||
(abfd,
|
||
elf_elfheader (abfd)->e_shstrndx,
|
||
elf_section_data (sec)->rel_hdr.sh_name));
|
||
if (name == NULL)
|
||
return FALSE;
|
||
|
||
if (strncmp (name, ".rela", 5) != 0
|
||
|| strcmp (bfd_get_section_name (abfd, sec),
|
||
name + 5) != 0)
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%s: bad relocation section name `%s\'"),
|
||
bfd_archive_filename (abfd), name);
|
||
bfd_set_error (bfd_error_bad_value);
|
||
}
|
||
|
||
dynobj = htab->elf.dynobj;
|
||
sreloc = bfd_get_section_by_name (dynobj, name);
|
||
if (sreloc == NULL)
|
||
{
|
||
flagword flags;
|
||
|
||
sreloc = bfd_make_section (dynobj, name);
|
||
flags = (SEC_HAS_CONTENTS | SEC_READONLY
|
||
| SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
||
if ((sec->flags & SEC_ALLOC) != 0)
|
||
flags |= SEC_ALLOC | SEC_LOAD;
|
||
if (sreloc == NULL
|
||
|| ! bfd_set_section_flags (dynobj, sreloc, flags)
|
||
|| ! bfd_set_section_alignment (dynobj, sreloc, 3))
|
||
return FALSE;
|
||
}
|
||
elf_section_data (sec)->sreloc = sreloc;
|
||
}
|
||
|
||
/* If this is a global symbol, we count the number of
|
||
relocations we need for this symbol. */
|
||
if (h != NULL)
|
||
{
|
||
head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
|
||
}
|
||
else
|
||
{
|
||
/* Track dynamic relocs needed for local syms too.
|
||
We really need local syms available to do this
|
||
easily. Oh well. */
|
||
|
||
asection *s;
|
||
s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
|
||
sec, r_symndx);
|
||
if (s == NULL)
|
||
return FALSE;
|
||
|
||
head = ((struct ppc_dyn_relocs **)
|
||
&elf_section_data (s)->local_dynrel);
|
||
}
|
||
|
||
p = *head;
|
||
if (p == NULL || p->sec != sec)
|
||
{
|
||
p = bfd_alloc (htab->elf.dynobj, sizeof *p);
|
||
if (p == NULL)
|
||
return FALSE;
|
||
p->next = *head;
|
||
*head = p;
|
||
p->sec = sec;
|
||
p->count = 0;
|
||
p->pc_count = 0;
|
||
}
|
||
|
||
p->count += 1;
|
||
if (!MUST_BE_DYN_RELOC (r_type))
|
||
p->pc_count += 1;
|
||
}
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Return the section that should be marked against GC for a given
|
||
relocation. */
|
||
|
||
static asection *
|
||
ppc64_elf_gc_mark_hook (asection *sec,
|
||
struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
||
Elf_Internal_Rela *rel,
|
||
struct elf_link_hash_entry *h,
|
||
Elf_Internal_Sym *sym)
|
||
{
|
||
asection *rsec = NULL;
|
||
|
||
if (h != NULL)
|
||
{
|
||
enum elf_ppc64_reloc_type r_type;
|
||
struct ppc_link_hash_entry *fdh;
|
||
|
||
r_type = ELF64_R_TYPE (rel->r_info);
|
||
switch (r_type)
|
||
{
|
||
case R_PPC64_GNU_VTINHERIT:
|
||
case R_PPC64_GNU_VTENTRY:
|
||
break;
|
||
|
||
default:
|
||
switch (h->root.type)
|
||
{
|
||
case bfd_link_hash_defined:
|
||
case bfd_link_hash_defweak:
|
||
fdh = (struct ppc_link_hash_entry *) h;
|
||
|
||
/* Function descriptor syms cause the associated
|
||
function code sym section to be marked. */
|
||
if (fdh->is_func_descriptor)
|
||
rsec = fdh->oh->root.u.def.section;
|
||
|
||
/* Function entry syms return NULL if they are in .opd
|
||
and are not ._start (or others undefined on the ld
|
||
command line). Thus we avoid marking all function
|
||
sections, as all functions are referenced in .opd. */
|
||
else if ((fdh->oh != NULL
|
||
&& ((struct ppc_link_hash_entry *) fdh->oh)->is_entry)
|
||
|| ppc64_elf_section_data (sec)->opd.func_sec == NULL)
|
||
rsec = h->root.u.def.section;
|
||
break;
|
||
|
||
case bfd_link_hash_common:
|
||
rsec = h->root.u.c.p->section;
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
asection **opd_sym_section;
|
||
|
||
rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
|
||
opd_sym_section = ppc64_elf_section_data (rsec)->opd.func_sec;
|
||
if (opd_sym_section != NULL)
|
||
rsec = opd_sym_section[sym->st_value / 24];
|
||
else if (ppc64_elf_section_data (sec)->opd.func_sec != NULL)
|
||
rsec = NULL;
|
||
}
|
||
|
||
return rsec;
|
||
}
|
||
|
||
/* Update the .got, .plt. and dynamic reloc reference counts for the
|
||
section being removed. */
|
||
|
||
static bfd_boolean
|
||
ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
|
||
asection *sec, const Elf_Internal_Rela *relocs)
|
||
{
|
||
struct ppc_link_hash_table *htab;
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
struct elf_link_hash_entry **sym_hashes;
|
||
struct got_entry **local_got_ents;
|
||
const Elf_Internal_Rela *rel, *relend;
|
||
|
||
if ((sec->flags & SEC_ALLOC) == 0)
|
||
return TRUE;
|
||
|
||
elf_section_data (sec)->local_dynrel = NULL;
|
||
|
||
htab = ppc_hash_table (info);
|
||
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
||
sym_hashes = elf_sym_hashes (abfd);
|
||
local_got_ents = elf_local_got_ents (abfd);
|
||
|
||
relend = relocs + sec->reloc_count;
|
||
for (rel = relocs; rel < relend; rel++)
|
||
{
|
||
unsigned long r_symndx;
|
||
enum elf_ppc64_reloc_type r_type;
|
||
struct elf_link_hash_entry *h = NULL;
|
||
char tls_type = 0;
|
||
|
||
r_symndx = ELF64_R_SYM (rel->r_info);
|
||
r_type = ELF64_R_TYPE (rel->r_info);
|
||
if (r_symndx >= symtab_hdr->sh_info)
|
||
{
|
||
struct ppc_link_hash_entry *eh;
|
||
struct ppc_dyn_relocs **pp;
|
||
struct ppc_dyn_relocs *p;
|
||
|
||
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
||
eh = (struct ppc_link_hash_entry *) h;
|
||
|
||
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
|
||
if (p->sec == sec)
|
||
{
|
||
/* Everything must go for SEC. */
|
||
*pp = p->next;
|
||
break;
|
||
}
|
||
}
|
||
|
||
switch (r_type)
|
||
{
|
||
case R_PPC64_GOT_TLSLD16:
|
||
case R_PPC64_GOT_TLSLD16_LO:
|
||
case R_PPC64_GOT_TLSLD16_HI:
|
||
case R_PPC64_GOT_TLSLD16_HA:
|
||
ppc64_tlsld_got (abfd)->refcount -= 1;
|
||
tls_type = TLS_TLS | TLS_LD;
|
||
goto dogot;
|
||
|
||
case R_PPC64_GOT_TLSGD16:
|
||
case R_PPC64_GOT_TLSGD16_LO:
|
||
case R_PPC64_GOT_TLSGD16_HI:
|
||
case R_PPC64_GOT_TLSGD16_HA:
|
||
tls_type = TLS_TLS | TLS_GD;
|
||
goto dogot;
|
||
|
||
case R_PPC64_GOT_TPREL16_DS:
|
||
case R_PPC64_GOT_TPREL16_LO_DS:
|
||
case R_PPC64_GOT_TPREL16_HI:
|
||
case R_PPC64_GOT_TPREL16_HA:
|
||
tls_type = TLS_TLS | TLS_TPREL;
|
||
goto dogot;
|
||
|
||
case R_PPC64_GOT_DTPREL16_DS:
|
||
case R_PPC64_GOT_DTPREL16_LO_DS:
|
||
case R_PPC64_GOT_DTPREL16_HI:
|
||
case R_PPC64_GOT_DTPREL16_HA:
|
||
tls_type = TLS_TLS | TLS_DTPREL;
|
||
goto dogot;
|
||
|
||
case R_PPC64_GOT16:
|
||
case R_PPC64_GOT16_DS:
|
||
case R_PPC64_GOT16_HA:
|
||
case R_PPC64_GOT16_HI:
|
||
case R_PPC64_GOT16_LO:
|
||
case R_PPC64_GOT16_LO_DS:
|
||
dogot:
|
||
{
|
||
struct got_entry *ent;
|
||
|
||
if (h != NULL)
|
||
ent = h->got.glist;
|
||
else
|
||
ent = local_got_ents[r_symndx];
|
||
|
||
for (; ent != NULL; ent = ent->next)
|
||
if (ent->addend == rel->r_addend
|
||
&& ent->owner == abfd
|
||
&& ent->tls_type == tls_type)
|
||
break;
|
||
if (ent == NULL)
|
||
abort ();
|
||
if (ent->got.refcount > 0)
|
||
ent->got.refcount -= 1;
|
||
}
|
||
break;
|
||
|
||
case R_PPC64_PLT16_HA:
|
||
case R_PPC64_PLT16_HI:
|
||
case R_PPC64_PLT16_LO:
|
||
case R_PPC64_PLT32:
|
||
case R_PPC64_PLT64:
|
||
case R_PPC64_REL14:
|
||
case R_PPC64_REL14_BRNTAKEN:
|
||
case R_PPC64_REL14_BRTAKEN:
|
||
case R_PPC64_REL24:
|
||
if (h != NULL)
|
||
{
|
||
struct plt_entry *ent;
|
||
|
||
for (ent = h->plt.plist; ent != NULL; ent = ent->next)
|
||
if (ent->addend == rel->r_addend)
|
||
break;
|
||
if (ent == NULL)
|
||
abort ();
|
||
if (ent->plt.refcount > 0)
|
||
ent->plt.refcount -= 1;
|
||
}
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/* Called via elf_link_hash_traverse to transfer dynamic linking
|
||
information on function code symbol entries to their corresponding
|
||
function descriptor symbol entries. */
|
||
static bfd_boolean
|
||
func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
|
||
{
|
||
struct bfd_link_info *info;
|
||
struct ppc_link_hash_table *htab;
|
||
struct plt_entry *ent;
|
||
struct ppc_link_hash_entry *fh;
|
||
struct ppc_link_hash_entry *fdh;
|
||
bfd_boolean force_local;
|
||
|
||
fh = (struct ppc_link_hash_entry *) h;
|
||
if (fh->elf.root.type == bfd_link_hash_indirect)
|
||
return TRUE;
|
||
|
||
if (fh->elf.root.type == bfd_link_hash_warning)
|
||
fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
|
||
|
||
info = inf;
|
||
htab = ppc_hash_table (info);
|
||
|
||
/* If this is a function code symbol, transfer dynamic linking
|
||
information to the function descriptor symbol. */
|
||
if (!fh->is_func)
|
||
return TRUE;
|
||
|
||
if (fh->elf.root.type == bfd_link_hash_undefweak
|
||
&& (fh->elf.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR))
|
||
htab->have_undefweak = TRUE;
|
||
|
||
for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
|
||
if (ent->plt.refcount > 0)
|
||
break;
|
||
if (ent == NULL
|
||
|| fh->elf.root.root.string[0] != '.'
|
||
|| fh->elf.root.root.string[1] == '\0')
|
||
return TRUE;
|
||
|
||
/* Find the corresponding function descriptor symbol. Create it
|
||
as undefined if necessary. */
|
||
|
||
fdh = get_fdh (fh, htab);
|
||
if (fdh != NULL)
|
||
while (fdh->elf.root.type == bfd_link_hash_indirect
|
||
|| fdh->elf.root.type == bfd_link_hash_warning)
|
||
fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
|
||
|
||
if (fdh == NULL
|
||
&& info->shared
|
||
&& (fh->elf.root.type == bfd_link_hash_undefined
|
||
|| fh->elf.root.type == bfd_link_hash_undefweak))
|
||
{
|
||
bfd *abfd;
|
||
asymbol *newsym;
|
||
struct bfd_link_hash_entry *bh;
|
||
|
||
abfd = fh->elf.root.u.undef.abfd;
|
||
newsym = bfd_make_empty_symbol (abfd);
|
||
newsym->name = fh->elf.root.root.string + 1;
|
||
newsym->section = bfd_und_section_ptr;
|
||
newsym->value = 0;
|
||
newsym->flags = BSF_OBJECT;
|
||
if (fh->elf.root.type == bfd_link_hash_undefweak)
|
||
newsym->flags |= BSF_WEAK;
|
||
|
||
bh = &fdh->elf.root;
|
||
if ( !(_bfd_generic_link_add_one_symbol
|
||
(info, abfd, newsym->name, newsym->flags,
|
||
newsym->section, newsym->value, NULL, FALSE, FALSE, &bh)))
|
||
{
|
||
return FALSE;
|
||
}
|
||
fdh = (struct ppc_link_hash_entry *) bh;
|
||
fdh->elf.elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
|
||
fdh->elf.size = 24;
|
||
fdh->elf.type = STT_OBJECT;
|
||
}
|
||
|
||
if (fdh != NULL
|
||
&& (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
|
||
&& (info->shared
|
||
|| (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
|
||
|| (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0
|
||
|| (fdh->elf.root.type == bfd_link_hash_undefweak
|
||
&& ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
|
||
{
|
||
if (fdh->elf.dynindx == -1)
|
||
if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
|
||
return FALSE;
|
||
fdh->elf.elf_link_hash_flags
|
||
|= (fh->elf.elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR
|
||
| ELF_LINK_HASH_REF_DYNAMIC
|
||
| ELF_LINK_HASH_REF_REGULAR_NONWEAK
|
||
| ELF_LINK_NON_GOT_REF));
|
||
if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
|
||
{
|
||
fdh->elf.plt.plist = fh->elf.plt.plist;
|
||
fdh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
|
||
}
|
||
fdh->is_func_descriptor = 1;
|
||
fdh->oh = &fh->elf;
|
||
fh->oh = &fdh->elf;
|
||
}
|
||
|
||
/* Now that the info is on the function descriptor, clear the
|
||
function code sym info. Any function code syms for which we
|
||
don't have a definition in a regular file, we force local.
|
||
This prevents a shared library from exporting syms that have
|
||
been imported from another library. Function code syms that
|
||
are really in the library we must leave global to prevent the
|
||
linker dragging in a definition from a static library. */
|
||
force_local
|
||
= (info->shared
|
||
&& ((fh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
|
||
|| fdh == NULL
|
||
|| (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
|
||
|| (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0));
|
||
_bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
#define MIN_SAVE_FPR 14
|
||
#define MAX_SAVE_FPR 31
|
||
|
||
/* Called near the start of bfd_elf_size_dynamic_sections. We use
|
||
this hook to a) provide some gcc support functions, and b) transfer
|
||
dynamic linking information gathered so far on function code symbol
|
||
entries, to their corresponding function descriptor symbol entries. */
|
||
static bfd_boolean
|
||
ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
|
||
struct bfd_link_info *info)
|
||
{
|
||
struct ppc_link_hash_table *htab;
|
||
unsigned int lowest_savef = MAX_SAVE_FPR + 2;
|
||
unsigned int lowest_restf = MAX_SAVE_FPR + 2;
|
||
unsigned int i;
|
||
struct elf_link_hash_entry *h;
|
||
bfd_byte *p;
|
||
char sym[10];
|
||
|
||
htab = ppc_hash_table (info);
|
||
|
||
if (htab->sfpr == NULL)
|
||
/* We don't have any relocs. */
|
||
return TRUE;
|
||
|
||
/* First provide any missing ._savef* and ._restf* functions. */
|
||
memcpy (sym, "._savef14", 10);
|
||
for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
|
||
{
|
||
sym[7] = i / 10 + '0';
|
||
sym[8] = i % 10 + '0';
|
||
h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
|
||
if (h != NULL
|
||
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
|
||
{
|
||
if (lowest_savef > i)
|
||
lowest_savef = i;
|
||
h->root.type = bfd_link_hash_defined;
|
||
h->root.u.def.section = htab->sfpr;
|
||
h->root.u.def.value = (i - lowest_savef) * 4;
|
||
h->type = STT_FUNC;
|
||
h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
|
||
_bfd_elf_link_hash_hide_symbol (info, h, TRUE);
|
||
}
|
||
}
|
||
|
||
memcpy (sym, "._restf14", 10);
|
||
for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
|
||
{
|
||
sym[7] = i / 10 + '0';
|
||
sym[8] = i % 10 + '0';
|
||
h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
|
||
if (h != NULL
|
||
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
|
||
{
|
||
if (lowest_restf > i)
|
||
lowest_restf = i;
|
||
h->root.type = bfd_link_hash_defined;
|
||
h->root.u.def.section = htab->sfpr;
|
||
h->root.u.def.value = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
|
||
+ (i - lowest_restf) * 4);
|
||
h->type = STT_FUNC;
|
||
h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
|
||
_bfd_elf_link_hash_hide_symbol (info, h, TRUE);
|
||
}
|
||
}
|
||
|
||
elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
|
||
|
||
htab->sfpr->size = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
|
||
+ (MAX_SAVE_FPR + 2 - lowest_restf) * 4);
|
||
|
||
if (htab->sfpr->size == 0)
|
||
{
|
||
if (!htab->have_undefweak)
|
||
{
|
||
_bfd_strip_section_from_output (info, htab->sfpr);
|
||
return TRUE;
|
||
}
|
||
|
||
htab->sfpr->size = 4;
|
||
}
|
||
|
||
p = bfd_alloc (htab->elf.dynobj, htab->sfpr->size);
|
||
if (p == NULL)
|
||
return FALSE;
|
||
htab->sfpr->contents = p;
|
||
|
||
for (i = lowest_savef; i <= MAX_SAVE_FPR; i++)
|
||
{
|
||
unsigned int fpr = i << 21;
|
||
unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
|
||
bfd_put_32 (htab->elf.dynobj, STFD_FR0_0R1 + fpr + stackoff, p);
|
||
p += 4;
|
||
}
|
||
if (lowest_savef <= MAX_SAVE_FPR)
|
||
{
|
||
bfd_put_32 (htab->elf.dynobj, BLR, p);
|
||
p += 4;
|
||
}
|
||
|
||
for (i = lowest_restf; i <= MAX_SAVE_FPR; i++)
|
||
{
|
||
unsigned int fpr = i << 21;
|
||
unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
|
||
bfd_put_32 (htab->elf.dynobj, LFD_FR0_0R1 + fpr + stackoff, p);
|
||
p += 4;
|
||
}
|
||
if (lowest_restf <= MAX_SAVE_FPR
|
||
|| htab->sfpr->size == 4)
|
||
{
|
||
bfd_put_32 (htab->elf.dynobj, BLR, p);
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Adjust a symbol defined by a dynamic object and referenced by a
|
||
regular object. The current definition is in some section of the
|
||
dynamic object, but we're not including those sections. We have to
|
||
change the definition to something the rest of the link can
|
||
understand. */
|
||
|
||
static bfd_boolean
|
||
ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
|
||
struct elf_link_hash_entry *h)
|
||
{
|
||
struct ppc_link_hash_table *htab;
|
||
asection *s;
|
||
unsigned int power_of_two;
|
||
|
||
htab = ppc_hash_table (info);
|
||
|
||
/* Deal with function syms. */
|
||
if (h->type == STT_FUNC
|
||
|| (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
|
||
{
|
||
/* Clear procedure linkage table information for any symbol that
|
||
won't need a .plt entry. */
|
||
struct plt_entry *ent;
|
||
for (ent = h->plt.plist; ent != NULL; ent = ent->next)
|
||
if (ent->plt.refcount > 0)
|
||
break;
|
||
if (!((struct ppc_link_hash_entry *) h)->is_func_descriptor
|
||
|| ent == NULL
|
||
|| SYMBOL_CALLS_LOCAL (info, h)
|
||
|| (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
|
||
&& h->root.type == bfd_link_hash_undefweak))
|
||
{
|
||
h->plt.plist = NULL;
|
||
h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
|
||
}
|
||
}
|
||
else
|
||
h->plt.plist = NULL;
|
||
|
||
/* If this is a weak symbol, and there is a real definition, the
|
||
processor independent code will have arranged for us to see the
|
||
real definition first, and we can just use the same value. */
|
||
if (h->weakdef != NULL)
|
||
{
|
||
BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
|
||
|| h->weakdef->root.type == bfd_link_hash_defweak);
|
||
h->root.u.def.section = h->weakdef->root.u.def.section;
|
||
h->root.u.def.value = h->weakdef->root.u.def.value;
|
||
if (ELIMINATE_COPY_RELOCS)
|
||
h->elf_link_hash_flags
|
||
= ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF)
|
||
| (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF));
|
||
return TRUE;
|
||
}
|
||
|
||
/* If we are creating a shared library, we must presume that the
|
||
only references to the symbol are via the global offset table.
|
||
For such cases we need not do anything here; the relocations will
|
||
be handled correctly by relocate_section. */
|
||
if (info->shared)
|
||
return TRUE;
|
||
|
||
/* If there are no references to this symbol that do not use the
|
||
GOT, we don't need to generate a copy reloc. */
|
||
if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
|
||
return TRUE;
|
||
|
||
if (ELIMINATE_COPY_RELOCS)
|
||
{
|
||
struct ppc_link_hash_entry * eh;
|
||
struct ppc_dyn_relocs *p;
|
||
|
||
eh = (struct ppc_link_hash_entry *) h;
|
||
for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
||
{
|
||
s = p->sec->output_section;
|
||
if (s != NULL && (s->flags & SEC_READONLY) != 0)
|
||
break;
|
||
}
|
||
|
||
/* If we didn't find any dynamic relocs in read-only sections, then
|
||
we'll be keeping the dynamic relocs and avoiding the copy reloc. */
|
||
if (p == NULL)
|
||
{
|
||
h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
|
||
return TRUE;
|
||
}
|
||
}
|
||
|
||
if (h->plt.plist != NULL)
|
||
{
|
||
/* We should never get here, but unfortunately there are versions
|
||
of gcc out there that improperly (for this ABI) put initialized
|
||
function pointers, vtable refs and suchlike in read-only
|
||
sections. Allow them to proceed, but warn that this might
|
||
break at runtime. */
|
||
(*_bfd_error_handler)
|
||
(_("copy reloc against `%s' requires lazy plt linking; "
|
||
"avoid setting LD_BIND_NOW=1 or upgrade gcc"),
|
||
h->root.root.string);
|
||
}
|
||
|
||
/* This is a reference to a symbol defined by a dynamic object which
|
||
is not a function. */
|
||
|
||
/* We must allocate the symbol in our .dynbss section, which will
|
||
become part of the .bss section of the executable. There will be
|
||
an entry for this symbol in the .dynsym section. The dynamic
|
||
object will contain position independent code, so all references
|
||
from the dynamic object to this symbol will go through the global
|
||
offset table. The dynamic linker will use the .dynsym entry to
|
||
determine the address it must put in the global offset table, so
|
||
both the dynamic object and the regular object will refer to the
|
||
same memory location for the variable. */
|
||
|
||
/* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
|
||
to copy the initial value out of the dynamic object and into the
|
||
runtime process image. We need to remember the offset into the
|
||
.rela.bss section we are going to use. */
|
||
if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
|
||
{
|
||
htab->relbss->size += sizeof (Elf64_External_Rela);
|
||
h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
|
||
}
|
||
|
||
/* We need to figure out the alignment required for this symbol. I
|
||
have no idea how ELF linkers handle this. */
|
||
power_of_two = bfd_log2 (h->size);
|
||
if (power_of_two > 4)
|
||
power_of_two = 4;
|
||
|
||
/* Apply the required alignment. */
|
||
s = htab->dynbss;
|
||
s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
|
||
if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
|
||
{
|
||
if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
|
||
return FALSE;
|
||
}
|
||
|
||
/* Define the symbol as being at this point in the section. */
|
||
h->root.u.def.section = s;
|
||
h->root.u.def.value = s->size;
|
||
|
||
/* Increment the section size to make room for the symbol. */
|
||
s->size += h->size;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* If given a function descriptor symbol, hide both the function code
|
||
sym and the descriptor. */
|
||
static void
|
||
ppc64_elf_hide_symbol (struct bfd_link_info *info,
|
||
struct elf_link_hash_entry *h,
|
||
bfd_boolean force_local)
|
||
{
|
||
_bfd_elf_link_hash_hide_symbol (info, h, force_local);
|
||
|
||
if (((struct ppc_link_hash_entry *) h)->is_func_descriptor)
|
||
{
|
||
struct elf_link_hash_entry *fh = ((struct ppc_link_hash_entry *) h)->oh;
|
||
|
||
if (fh == NULL)
|
||
{
|
||
const char *p, *q;
|
||
struct ppc_link_hash_table *htab;
|
||
char save;
|
||
|
||
/* We aren't supposed to use alloca in BFD because on
|
||
systems which do not have alloca the version in libiberty
|
||
calls xmalloc, which might cause the program to crash
|
||
when it runs out of memory. This function doesn't have a
|
||
return status, so there's no way to gracefully return an
|
||
error. So cheat. We know that string[-1] can be safely
|
||
dereferenced; It's either a string in an ELF string
|
||
table, or allocated in an objalloc structure. */
|
||
|
||
p = h->root.root.string - 1;
|
||
save = *p;
|
||
*(char *) p = '.';
|
||
htab = ppc_hash_table (info);
|
||
fh = elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
|
||
*(char *) p = save;
|
||
|
||
/* Unfortunately, if it so happens that the string we were
|
||
looking for was allocated immediately before this string,
|
||
then we overwrote the string terminator. That's the only
|
||
reason the lookup should fail. */
|
||
if (fh == NULL)
|
||
{
|
||
q = h->root.root.string + strlen (h->root.root.string);
|
||
while (q >= h->root.root.string && *q == *p)
|
||
--q, --p;
|
||
if (q < h->root.root.string && *p == '.')
|
||
fh = elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
|
||
}
|
||
if (fh != NULL)
|
||
{
|
||
((struct ppc_link_hash_entry *) h)->oh = fh;
|
||
((struct ppc_link_hash_entry *) fh)->oh = h;
|
||
}
|
||
}
|
||
if (fh != NULL)
|
||
_bfd_elf_link_hash_hide_symbol (info, fh, force_local);
|
||
}
|
||
}
|
||
|
||
static bfd_boolean
|
||
get_sym_h (struct elf_link_hash_entry **hp, Elf_Internal_Sym **symp,
|
||
asection **symsecp, char **tls_maskp, Elf_Internal_Sym **locsymsp,
|
||
unsigned long r_symndx, bfd *ibfd)
|
||
{
|
||
Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
|
||
|
||
if (r_symndx >= symtab_hdr->sh_info)
|
||
{
|
||
struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
|
||
struct elf_link_hash_entry *h;
|
||
|
||
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
||
while (h->root.type == bfd_link_hash_indirect
|
||
|| h->root.type == bfd_link_hash_warning)
|
||
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
||
|
||
if (hp != NULL)
|
||
*hp = h;
|
||
|
||
if (symp != NULL)
|
||
*symp = NULL;
|
||
|
||
if (symsecp != NULL)
|
||
{
|
||
asection *symsec = NULL;
|
||
if (h->root.type == bfd_link_hash_defined
|
||
|| h->root.type == bfd_link_hash_defweak)
|
||
symsec = h->root.u.def.section;
|
||
*symsecp = symsec;
|
||
}
|
||
|
||
if (tls_maskp != NULL)
|
||
{
|
||
struct ppc_link_hash_entry *eh;
|
||
|
||
eh = (struct ppc_link_hash_entry *) h;
|
||
*tls_maskp = &eh->tls_mask;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
Elf_Internal_Sym *sym;
|
||
Elf_Internal_Sym *locsyms = *locsymsp;
|
||
|
||
if (locsyms == NULL)
|
||
{
|
||
locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
|
||
if (locsyms == NULL)
|
||
locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
|
||
symtab_hdr->sh_info,
|
||
0, NULL, NULL, NULL);
|
||
if (locsyms == NULL)
|
||
return FALSE;
|
||
*locsymsp = locsyms;
|
||
}
|
||
sym = locsyms + r_symndx;
|
||
|
||
if (hp != NULL)
|
||
*hp = NULL;
|
||
|
||
if (symp != NULL)
|
||
*symp = sym;
|
||
|
||
if (symsecp != NULL)
|
||
{
|
||
asection *symsec = NULL;
|
||
if ((sym->st_shndx != SHN_UNDEF
|
||
&& sym->st_shndx < SHN_LORESERVE)
|
||
|| sym->st_shndx > SHN_HIRESERVE)
|
||
symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
|
||
*symsecp = symsec;
|
||
}
|
||
|
||
if (tls_maskp != NULL)
|
||
{
|
||
struct got_entry **lgot_ents;
|
||
char *tls_mask;
|
||
|
||
tls_mask = NULL;
|
||
lgot_ents = elf_local_got_ents (ibfd);
|
||
if (lgot_ents != NULL)
|
||
{
|
||
char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
|
||
tls_mask = &lgot_masks[r_symndx];
|
||
}
|
||
*tls_maskp = tls_mask;
|
||
}
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
|
||
error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
|
||
type suitable for optimization, and 1 otherwise. */
|
||
|
||
static int
|
||
get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
|
||
Elf_Internal_Sym **locsymsp,
|
||
const Elf_Internal_Rela *rel, bfd *ibfd)
|
||
{
|
||
unsigned long r_symndx;
|
||
int next_r;
|
||
struct elf_link_hash_entry *h;
|
||
Elf_Internal_Sym *sym;
|
||
asection *sec;
|
||
bfd_vma off;
|
||
|
||
r_symndx = ELF64_R_SYM (rel->r_info);
|
||
if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
|
||
return 0;
|
||
|
||
if ((*tls_maskp != NULL && **tls_maskp != 0)
|
||
|| sec == NULL
|
||
|| ppc64_elf_section_data (sec)->t_symndx == NULL)
|
||
return 1;
|
||
|
||
/* Look inside a TOC section too. */
|
||
if (h != NULL)
|
||
{
|
||
BFD_ASSERT (h->root.type == bfd_link_hash_defined);
|
||
off = h->root.u.def.value;
|
||
}
|
||
else
|
||
off = sym->st_value;
|
||
off += rel->r_addend;
|
||
BFD_ASSERT (off % 8 == 0);
|
||
r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
|
||
next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
|
||
if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
|
||
return 0;
|
||
if (toc_symndx != NULL)
|
||
*toc_symndx = r_symndx;
|
||
if ((h == NULL
|
||
|| ((h->root.type == bfd_link_hash_defined
|
||
|| h->root.type == bfd_link_hash_defweak)
|
||
&& !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
|
||
&& (next_r == -1 || next_r == -2))
|
||
return 1 - next_r;
|
||
return 1;
|
||
}
|
||
|
||
/* Adjust all global syms defined in opd sections. In gcc generated
|
||
code these will already have been done, but I suppose we have to
|
||
cater for all sorts of hand written assembly. */
|
||
|
||
static bfd_boolean
|
||
adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
|
||
{
|
||
struct ppc_link_hash_entry *eh;
|
||
asection *sym_sec;
|
||
long *opd_adjust;
|
||
|
||
if (h->root.type == bfd_link_hash_indirect)
|
||
return TRUE;
|
||
|
||
if (h->root.type == bfd_link_hash_warning)
|
||
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
||
|
||
if (h->root.type != bfd_link_hash_defined
|
||
&& h->root.type != bfd_link_hash_defweak)
|
||
return TRUE;
|
||
|
||
eh = (struct ppc_link_hash_entry *) h;
|
||
if (eh->adjust_done)
|
||
return TRUE;
|
||
|
||
sym_sec = eh->elf.root.u.def.section;
|
||
if (sym_sec != NULL
|
||
&& elf_section_data (sym_sec) != NULL
|
||
&& (opd_adjust = ppc64_elf_section_data (sym_sec)->opd.adjust) != NULL)
|
||
{
|
||
eh->elf.root.u.def.value += opd_adjust[eh->elf.root.u.def.value / 24];
|
||
eh->adjust_done = 1;
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/* Remove unused Official Procedure Descriptor entries. Currently we
|
||
only remove those associated with functions in discarded link-once
|
||
sections, or weakly defined functions that have been overridden. It
|
||
would be possible to remove many more entries for statically linked
|
||
applications. */
|
||
|
||
bfd_boolean
|
||
ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info)
|
||
{
|
||
bfd *ibfd;
|
||
bfd_boolean some_edited = FALSE;
|
||
|
||
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
||
{
|
||
asection *sec;
|
||
Elf_Internal_Rela *relstart, *rel, *relend;
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
Elf_Internal_Sym *local_syms;
|
||
struct elf_link_hash_entry **sym_hashes;
|
||
bfd_vma offset;
|
||
bfd_size_type amt;
|
||
long *adjust;
|
||
bfd_boolean need_edit;
|
||
|
||
sec = bfd_get_section_by_name (ibfd, ".opd");
|
||
if (sec == NULL)
|
||
continue;
|
||
|
||
amt = sec->size * sizeof (long) / 24;
|
||
adjust = ppc64_elf_section_data (sec)->opd.adjust;
|
||
if (adjust == NULL)
|
||
{
|
||
/* Must be a ld -r link. ie. check_relocs hasn't been
|
||
called. */
|
||
adjust = bfd_zalloc (obfd, amt);
|
||
ppc64_elf_section_data (sec)->opd.adjust = adjust;
|
||
}
|
||
memset (adjust, 0, amt);
|
||
|
||
if (sec->output_section == bfd_abs_section_ptr)
|
||
continue;
|
||
|
||
/* Look through the section relocs. */
|
||
if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
|
||
continue;
|
||
|
||
local_syms = NULL;
|
||
symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
|
||
sym_hashes = elf_sym_hashes (ibfd);
|
||
|
||
/* Read the relocations. */
|
||
relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
|
||
info->keep_memory);
|
||
if (relstart == NULL)
|
||
return FALSE;
|
||
|
||
/* First run through the relocs to check they are sane, and to
|
||
determine whether we need to edit this opd section. */
|
||
need_edit = FALSE;
|
||
offset = 0;
|
||
relend = relstart + sec->reloc_count;
|
||
for (rel = relstart; rel < relend; )
|
||
{
|
||
enum elf_ppc64_reloc_type r_type;
|
||
unsigned long r_symndx;
|
||
asection *sym_sec;
|
||
struct elf_link_hash_entry *h;
|
||
Elf_Internal_Sym *sym;
|
||
|
||
/* .opd contains a regular array of 24 byte entries. We're
|
||
only interested in the reloc pointing to a function entry
|
||
point. */
|
||
if (rel->r_offset != offset
|
||
|| rel + 1 >= relend
|
||
|| (rel + 1)->r_offset != offset + 8)
|
||
{
|
||
/* If someone messes with .opd alignment then after a
|
||
"ld -r" we might have padding in the middle of .opd.
|
||
Also, there's nothing to prevent someone putting
|
||
something silly in .opd with the assembler. No .opd
|
||
optimization for them! */
|
||
(*_bfd_error_handler)
|
||
(_("%s: .opd is not a regular array of opd entries"),
|
||
bfd_archive_filename (ibfd));
|
||
need_edit = FALSE;
|
||
break;
|
||
}
|
||
|
||
if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
|
||
|| (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%s: unexpected reloc type %u in .opd section"),
|
||
bfd_archive_filename (ibfd), r_type);
|
||
need_edit = FALSE;
|
||
break;
|
||
}
|
||
|
||
r_symndx = ELF64_R_SYM (rel->r_info);
|
||
if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
|
||
r_symndx, ibfd))
|
||
goto error_ret;
|
||
|
||
if (sym_sec == NULL || sym_sec->owner == NULL)
|
||
{
|
||
const char *sym_name;
|
||
if (h != NULL)
|
||
sym_name = h->root.root.string;
|
||
else
|
||
sym_name = bfd_elf_local_sym_name (ibfd, sym);
|
||
|
||
(*_bfd_error_handler)
|
||
(_("%s: undefined sym `%s' in .opd section"),
|
||
bfd_archive_filename (ibfd),
|
||
sym_name);
|
||
need_edit = FALSE;
|
||
break;
|
||
}
|
||
|
||
/* opd entries are always for functions defined in the
|
||
current input bfd. If the symbol isn't defined in the
|
||
input bfd, then we won't be using the function in this
|
||
bfd; It must be defined in a linkonce section in another
|
||
bfd, or is weak. It's also possible that we are
|
||
discarding the function due to a linker script /DISCARD/,
|
||
which we test for via the output_section. */
|
||
if (sym_sec->owner != ibfd
|
||
|| sym_sec->output_section == bfd_abs_section_ptr)
|
||
need_edit = TRUE;
|
||
|
||
offset += 24;
|
||
rel += 2;
|
||
/* Allow for the possibility of a reloc on the third word. */
|
||
if (rel < relend
|
||
&& rel->r_offset == offset - 8)
|
||
rel += 1;
|
||
}
|
||
|
||
if (need_edit)
|
||
{
|
||
Elf_Internal_Rela *write_rel;
|
||
bfd_byte *rptr, *wptr;
|
||
bfd_boolean skip;
|
||
|
||
/* This seems a waste of time as input .opd sections are all
|
||
zeros as generated by gcc, but I suppose there's no reason
|
||
this will always be so. We might start putting something in
|
||
the third word of .opd entries. */
|
||
if ((sec->flags & SEC_IN_MEMORY) == 0)
|
||
{
|
||
bfd_byte *loc;
|
||
if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
|
||
{
|
||
if (loc != NULL)
|
||
free (loc);
|
||
error_ret:
|
||
if (local_syms != NULL
|
||
&& symtab_hdr->contents != (unsigned char *) local_syms)
|
||
free (local_syms);
|
||
if (elf_section_data (sec)->relocs != relstart)
|
||
free (relstart);
|
||
return FALSE;
|
||
}
|
||
sec->contents = loc;
|
||
sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
|
||
}
|
||
|
||
elf_section_data (sec)->relocs = relstart;
|
||
|
||
wptr = sec->contents;
|
||
rptr = sec->contents;
|
||
write_rel = relstart;
|
||
skip = FALSE;
|
||
offset = 0;
|
||
for (rel = relstart; rel < relend; rel++)
|
||
{
|
||
unsigned long r_symndx;
|
||
asection *sym_sec;
|
||
struct elf_link_hash_entry *h;
|
||
Elf_Internal_Sym *sym;
|
||
|
||
r_symndx = ELF64_R_SYM (rel->r_info);
|
||
if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
|
||
r_symndx, ibfd))
|
||
goto error_ret;
|
||
|
||
if (rel->r_offset == offset)
|
||
{
|
||
struct ppc_link_hash_entry *fdh = NULL;
|
||
if (h != NULL)
|
||
fdh = get_fdh ((struct ppc_link_hash_entry *) h,
|
||
ppc_hash_table (info));
|
||
|
||
skip = (sym_sec->owner != ibfd
|
||
|| sym_sec->output_section == bfd_abs_section_ptr);
|
||
if (skip)
|
||
{
|
||
if (h != NULL && sym_sec->owner == ibfd)
|
||
{
|
||
/* Arrange for the function descriptor sym
|
||
to be dropped. */
|
||
fdh->elf.root.u.def.value = 0;
|
||
fdh->elf.root.u.def.section = sym_sec;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* We'll be keeping this opd entry. */
|
||
|
||
if (h != NULL)
|
||
{
|
||
/* Redefine the function descriptor symbol to
|
||
this location in the opd section. It is
|
||
necessary to update the value here rather
|
||
than using an array of adjustments as we do
|
||
for local symbols, because various places
|
||
in the generic ELF code use the value
|
||
stored in u.def.value. */
|
||
fdh->elf.root.u.def.value = wptr - sec->contents;
|
||
fdh->adjust_done = 1;
|
||
}
|
||
|
||
/* Local syms are a bit tricky. We could
|
||
tweak them as they can be cached, but
|
||
we'd need to look through the local syms
|
||
for the function descriptor sym which we
|
||
don't have at the moment. So keep an
|
||
array of adjustments. */
|
||
adjust[rel->r_offset / 24] = wptr - rptr;
|
||
|
||
if (wptr != rptr)
|
||
memcpy (wptr, rptr, 24);
|
||
wptr += 24;
|
||
}
|
||
rptr += 24;
|
||
offset += 24;
|
||
}
|
||
|
||
if (skip)
|
||
{
|
||
BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel->r_info)));
|
||
if (info->shared)
|
||
{
|
||
/* We won't be needing dynamic relocs here. */
|
||
struct ppc_dyn_relocs **pp;
|
||
struct ppc_dyn_relocs *p;
|
||
|
||
if (h != NULL)
|
||
pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
|
||
else if (sym_sec != NULL)
|
||
pp = ((struct ppc_dyn_relocs **)
|
||
&elf_section_data (sym_sec)->local_dynrel);
|
||
else
|
||
pp = ((struct ppc_dyn_relocs **)
|
||
&elf_section_data (sec)->local_dynrel);
|
||
while ((p = *pp) != NULL)
|
||
{
|
||
if (p->sec == sec)
|
||
{
|
||
p->count -= 1;
|
||
if (p->count == 0)
|
||
*pp = p->next;
|
||
break;
|
||
}
|
||
pp = &p->next;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* We need to adjust any reloc offsets to point to the
|
||
new opd entries. While we're at it, we may as well
|
||
remove redundant relocs. */
|
||
rel->r_offset += wptr - rptr;
|
||
if (write_rel != rel)
|
||
memcpy (write_rel, rel, sizeof (*rel));
|
||
++write_rel;
|
||
}
|
||
}
|
||
|
||
sec->size = wptr - sec->contents;
|
||
sec->reloc_count = write_rel - relstart;
|
||
/* Fudge the size too, as this is used later in
|
||
elf_bfd_final_link if we are emitting relocs. */
|
||
elf_section_data (sec)->rel_hdr.sh_size
|
||
= sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
|
||
BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
|
||
some_edited = TRUE;
|
||
}
|
||
else if (elf_section_data (sec)->relocs != relstart)
|
||
free (relstart);
|
||
|
||
if (local_syms != NULL
|
||
&& symtab_hdr->contents != (unsigned char *) local_syms)
|
||
{
|
||
if (!info->keep_memory)
|
||
free (local_syms);
|
||
else
|
||
symtab_hdr->contents = (unsigned char *) local_syms;
|
||
}
|
||
}
|
||
|
||
if (some_edited)
|
||
elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
|
||
|
||
asection *
|
||
ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
|
||
{
|
||
struct ppc_link_hash_table *htab;
|
||
|
||
htab = ppc_hash_table (info);
|
||
if (htab->tls_get_addr != NULL)
|
||
{
|
||
struct elf_link_hash_entry *h = htab->tls_get_addr;
|
||
|
||
while (h->root.type == bfd_link_hash_indirect
|
||
|| h->root.type == bfd_link_hash_warning)
|
||
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
||
|
||
htab->tls_get_addr = h;
|
||
}
|
||
|
||
return _bfd_elf_tls_setup (obfd, info);
|
||
}
|
||
|
||
/* Run through all the TLS relocs looking for optimization
|
||
opportunities. The linker has been hacked (see ppc64elf.em) to do
|
||
a preliminary section layout so that we know the TLS segment
|
||
offsets. We can't optimize earlier because some optimizations need
|
||
to know the tp offset, and we need to optimize before allocating
|
||
dynamic relocations. */
|
||
|
||
bfd_boolean
|
||
ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
|
||
{
|
||
bfd *ibfd;
|
||
asection *sec;
|
||
struct ppc_link_hash_table *htab;
|
||
|
||
if (info->relocatable || info->shared)
|
||
return TRUE;
|
||
|
||
htab = ppc_hash_table (info);
|
||
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
||
{
|
||
Elf_Internal_Sym *locsyms = NULL;
|
||
|
||
for (sec = ibfd->sections; sec != NULL; sec = sec->next)
|
||
if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
|
||
{
|
||
Elf_Internal_Rela *relstart, *rel, *relend;
|
||
int expecting_tls_get_addr;
|
||
|
||
/* Read the relocations. */
|
||
relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
|
||
info->keep_memory);
|
||
if (relstart == NULL)
|
||
return FALSE;
|
||
|
||
expecting_tls_get_addr = 0;
|
||
relend = relstart + sec->reloc_count;
|
||
for (rel = relstart; rel < relend; rel++)
|
||
{
|
||
enum elf_ppc64_reloc_type r_type;
|
||
unsigned long r_symndx;
|
||
struct elf_link_hash_entry *h;
|
||
Elf_Internal_Sym *sym;
|
||
asection *sym_sec;
|
||
char *tls_mask;
|
||
char tls_set, tls_clear, tls_type = 0;
|
||
bfd_vma value;
|
||
bfd_boolean ok_tprel, is_local;
|
||
|
||
r_symndx = ELF64_R_SYM (rel->r_info);
|
||
if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
|
||
r_symndx, ibfd))
|
||
{
|
||
err_free_rel:
|
||
if (elf_section_data (sec)->relocs != relstart)
|
||
free (relstart);
|
||
if (locsyms != NULL
|
||
&& (elf_tdata (ibfd)->symtab_hdr.contents
|
||
!= (unsigned char *) locsyms))
|
||
free (locsyms);
|
||
return FALSE;
|
||
}
|
||
|
||
if (h != NULL)
|
||
{
|
||
if (h->root.type != bfd_link_hash_defined
|
||
&& h->root.type != bfd_link_hash_defweak)
|
||
continue;
|
||
value = h->root.u.def.value;
|
||
}
|
||
else
|
||
{
|
||
value = sym->st_value;
|
||
|
||
if (elf_section_data (sym_sec) != NULL)
|
||
{
|
||
long *adjust;
|
||
adjust = ppc64_elf_section_data (sym_sec)->opd.adjust;
|
||
if (adjust != NULL)
|
||
value += adjust[value / 24];
|
||
}
|
||
}
|
||
|
||
ok_tprel = FALSE;
|
||
is_local = FALSE;
|
||
if (h == NULL
|
||
|| !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
|
||
{
|
||
is_local = TRUE;
|
||
value += sym_sec->output_offset;
|
||
value += sym_sec->output_section->vma;
|
||
value -= htab->elf.tls_sec->vma;
|
||
ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
|
||
< (bfd_vma) 1 << 32);
|
||
}
|
||
|
||
r_type = ELF64_R_TYPE (rel->r_info);
|
||
switch (r_type)
|
||
{
|
||
case R_PPC64_GOT_TLSLD16:
|
||
case R_PPC64_GOT_TLSLD16_LO:
|
||
case R_PPC64_GOT_TLSLD16_HI:
|
||
case R_PPC64_GOT_TLSLD16_HA:
|
||
/* These relocs should never be against a symbol
|
||
defined in a shared lib. Leave them alone if
|
||
that turns out to be the case. */
|
||
ppc64_tlsld_got (ibfd)->refcount -= 1;
|
||
if (!is_local)
|
||
continue;
|
||
|
||
/* LD -> LE */
|
||
tls_set = 0;
|
||
tls_clear = TLS_LD;
|
||
tls_type = TLS_TLS | TLS_LD;
|
||
expecting_tls_get_addr = 1;
|
||
break;
|
||
|
||
case R_PPC64_GOT_TLSGD16:
|
||
case R_PPC64_GOT_TLSGD16_LO:
|
||
case R_PPC64_GOT_TLSGD16_HI:
|
||
case R_PPC64_GOT_TLSGD16_HA:
|
||
if (ok_tprel)
|
||
/* GD -> LE */
|
||
tls_set = 0;
|
||
else
|
||
/* GD -> IE */
|
||
tls_set = TLS_TLS | TLS_TPRELGD;
|
||
tls_clear = TLS_GD;
|
||
tls_type = TLS_TLS | TLS_GD;
|
||
expecting_tls_get_addr = 1;
|
||
break;
|
||
|
||
case R_PPC64_GOT_TPREL16_DS:
|
||
case R_PPC64_GOT_TPREL16_LO_DS:
|
||
case R_PPC64_GOT_TPREL16_HI:
|
||
case R_PPC64_GOT_TPREL16_HA:
|
||
expecting_tls_get_addr = 0;
|
||
if (ok_tprel)
|
||
{
|
||
/* IE -> LE */
|
||
tls_set = 0;
|
||
tls_clear = TLS_TPREL;
|
||
tls_type = TLS_TLS | TLS_TPREL;
|
||
break;
|
||
}
|
||
else
|
||
continue;
|
||
|
||
case R_PPC64_REL14:
|
||
case R_PPC64_REL14_BRTAKEN:
|
||
case R_PPC64_REL14_BRNTAKEN:
|
||
case R_PPC64_REL24:
|
||
if (h != NULL
|
||
&& h == htab->tls_get_addr)
|
||
{
|
||
if (!expecting_tls_get_addr
|
||
&& rel != relstart
|
||
&& ((ELF64_R_TYPE (rel[-1].r_info)
|
||
== R_PPC64_TOC16)
|
||
|| (ELF64_R_TYPE (rel[-1].r_info)
|
||
== R_PPC64_TOC16_LO)))
|
||
{
|
||
/* Check for toc tls entries. */
|
||
char *toc_tls;
|
||
int retval;
|
||
|
||
retval = get_tls_mask (&toc_tls, NULL, &locsyms,
|
||
rel - 1, ibfd);
|
||
if (retval == 0)
|
||
goto err_free_rel;
|
||
if (toc_tls != NULL)
|
||
expecting_tls_get_addr = retval > 1;
|
||
}
|
||
|
||
if (expecting_tls_get_addr)
|
||
{
|
||
struct plt_entry *ent;
|
||
for (ent = h->plt.plist; ent; ent = ent->next)
|
||
if (ent->addend == 0)
|
||
{
|
||
if (ent->plt.refcount > 0)
|
||
ent->plt.refcount -= 1;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
expecting_tls_get_addr = 0;
|
||
continue;
|
||
|
||
case R_PPC64_TPREL64:
|
||
expecting_tls_get_addr = 0;
|
||
if (ok_tprel)
|
||
{
|
||
/* IE -> LE */
|
||
tls_set = TLS_EXPLICIT;
|
||
tls_clear = TLS_TPREL;
|
||
break;
|
||
}
|
||
else
|
||
continue;
|
||
|
||
case R_PPC64_DTPMOD64:
|
||
expecting_tls_get_addr = 0;
|
||
if (rel + 1 < relend
|
||
&& (rel[1].r_info
|
||
== ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
|
||
&& rel[1].r_offset == rel->r_offset + 8)
|
||
{
|
||
if (ok_tprel)
|
||
/* GD -> LE */
|
||
tls_set = TLS_EXPLICIT | TLS_GD;
|
||
else
|
||
/* GD -> IE */
|
||
tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
|
||
tls_clear = TLS_GD;
|
||
}
|
||
else
|
||
{
|
||
if (!is_local)
|
||
continue;
|
||
|
||
/* LD -> LE */
|
||
tls_set = TLS_EXPLICIT;
|
||
tls_clear = TLS_LD;
|
||
}
|
||
break;
|
||
|
||
default:
|
||
expecting_tls_get_addr = 0;
|
||
continue;
|
||
}
|
||
|
||
if ((tls_set & TLS_EXPLICIT) == 0)
|
||
{
|
||
struct got_entry *ent;
|
||
|
||
/* Adjust got entry for this reloc. */
|
||
if (h != NULL)
|
||
ent = h->got.glist;
|
||
else
|
||
ent = elf_local_got_ents (ibfd)[r_symndx];
|
||
|
||
for (; ent != NULL; ent = ent->next)
|
||
if (ent->addend == rel->r_addend
|
||
&& ent->owner == ibfd
|
||
&& ent->tls_type == tls_type)
|
||
break;
|
||
if (ent == NULL)
|
||
abort ();
|
||
|
||
if (tls_set == 0)
|
||
{
|
||
/* We managed to get rid of a got entry. */
|
||
if (ent->got.refcount > 0)
|
||
ent->got.refcount -= 1;
|
||
}
|
||
}
|
||
else if (h != NULL)
|
||
{
|
||
struct ppc_link_hash_entry * eh;
|
||
struct ppc_dyn_relocs **pp;
|
||
struct ppc_dyn_relocs *p;
|
||
|
||
/* Adjust dynamic relocs. */
|
||
eh = (struct ppc_link_hash_entry *) h;
|
||
for (pp = &eh->dyn_relocs;
|
||
(p = *pp) != NULL;
|
||
pp = &p->next)
|
||
if (p->sec == sec)
|
||
{
|
||
/* If we got rid of a DTPMOD/DTPREL reloc
|
||
pair then we'll lose one or two dyn
|
||
relocs. */
|
||
if (tls_set == (TLS_EXPLICIT | TLS_GD))
|
||
p->count -= 1;
|
||
p->count -= 1;
|
||
if (p->count == 0)
|
||
*pp = p->next;
|
||
break;
|
||
}
|
||
}
|
||
|
||
*tls_mask |= tls_set;
|
||
*tls_mask &= ~tls_clear;
|
||
}
|
||
|
||
if (elf_section_data (sec)->relocs != relstart)
|
||
free (relstart);
|
||
}
|
||
|
||
if (locsyms != NULL
|
||
&& (elf_tdata (ibfd)->symtab_hdr.contents
|
||
!= (unsigned char *) locsyms))
|
||
{
|
||
if (!info->keep_memory)
|
||
free (locsyms);
|
||
else
|
||
elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
|
||
}
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/* Allocate space in .plt, .got and associated reloc sections for
|
||
dynamic relocs. */
|
||
|
||
static bfd_boolean
|
||
allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
|
||
{
|
||
struct bfd_link_info *info;
|
||
struct ppc_link_hash_table *htab;
|
||
asection *s;
|
||
struct ppc_link_hash_entry *eh;
|
||
struct ppc_dyn_relocs *p;
|
||
struct got_entry *gent;
|
||
|
||
if (h->root.type == bfd_link_hash_indirect)
|
||
return TRUE;
|
||
|
||
if (h->root.type == bfd_link_hash_warning)
|
||
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
||
|
||
info = (struct bfd_link_info *) inf;
|
||
htab = ppc_hash_table (info);
|
||
|
||
if (htab->elf.dynamic_sections_created
|
||
&& h->dynindx != -1
|
||
&& WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
|
||
{
|
||
struct plt_entry *pent;
|
||
bfd_boolean doneone = FALSE;
|
||
for (pent = h->plt.plist; pent != NULL; pent = pent->next)
|
||
if (pent->plt.refcount > 0)
|
||
{
|
||
BFD_ASSERT (((struct ppc_link_hash_entry *) h)->is_func_descriptor);
|
||
|
||
/* If this is the first .plt entry, make room for the special
|
||
first entry. */
|
||
s = htab->plt;
|
||
if (s->size == 0)
|
||
s->size += PLT_INITIAL_ENTRY_SIZE;
|
||
|
||
pent->plt.offset = s->size;
|
||
|
||
/* Make room for this entry. */
|
||
s->size += PLT_ENTRY_SIZE;
|
||
|
||
/* Make room for the .glink code. */
|
||
s = htab->glink;
|
||
if (s->size == 0)
|
||
s->size += GLINK_CALL_STUB_SIZE;
|
||
/* We need bigger stubs past index 32767. */
|
||
if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
|
||
s->size += 4;
|
||
s->size += 2*4;
|
||
|
||
/* We also need to make an entry in the .rela.plt section. */
|
||
s = htab->relplt;
|
||
s->size += sizeof (Elf64_External_Rela);
|
||
doneone = TRUE;
|
||
}
|
||
else
|
||
pent->plt.offset = (bfd_vma) -1;
|
||
if (!doneone)
|
||
{
|
||
h->plt.plist = NULL;
|
||
h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
h->plt.plist = NULL;
|
||
h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
|
||
}
|
||
|
||
eh = (struct ppc_link_hash_entry *) h;
|
||
/* Run through the TLS GD got entries first if we're changing them
|
||
to TPREL. */
|
||
if ((eh->tls_mask & TLS_TPRELGD) != 0)
|
||
for (gent = h->got.glist; gent != NULL; gent = gent->next)
|
||
if (gent->got.refcount > 0
|
||
&& (gent->tls_type & TLS_GD) != 0)
|
||
{
|
||
/* This was a GD entry that has been converted to TPREL. If
|
||
there happens to be a TPREL entry we can use that one. */
|
||
struct got_entry *ent;
|
||
for (ent = h->got.glist; ent != NULL; ent = ent->next)
|
||
if (ent->got.refcount > 0
|
||
&& (ent->tls_type & TLS_TPREL) != 0
|
||
&& ent->addend == gent->addend
|
||
&& ent->owner == gent->owner)
|
||
{
|
||
gent->got.refcount = 0;
|
||
break;
|
||
}
|
||
|
||
/* If not, then we'll be using our own TPREL entry. */
|
||
if (gent->got.refcount != 0)
|
||
gent->tls_type = TLS_TLS | TLS_TPREL;
|
||
}
|
||
|
||
for (gent = h->got.glist; gent != NULL; gent = gent->next)
|
||
if (gent->got.refcount > 0)
|
||
{
|
||
bfd_boolean dyn;
|
||
|
||
/* Make sure this symbol is output as a dynamic symbol.
|
||
Undefined weak syms won't yet be marked as dynamic,
|
||
nor will all TLS symbols. */
|
||
if (h->dynindx == -1
|
||
&& (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
|
||
{
|
||
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
||
return FALSE;
|
||
}
|
||
|
||
if ((gent->tls_type & TLS_LD) != 0
|
||
&& !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
|
||
{
|
||
gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
|
||
continue;
|
||
}
|
||
|
||
s = ppc64_elf_tdata (gent->owner)->got;
|
||
gent->got.offset = s->size;
|
||
s->size
|
||
+= (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
|
||
dyn = htab->elf.dynamic_sections_created;
|
||
if ((info->shared
|
||
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
|
||
&& (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|
||
|| h->root.type != bfd_link_hash_undefweak))
|
||
ppc64_elf_tdata (gent->owner)->relgot->size
|
||
+= (gent->tls_type & eh->tls_mask & TLS_GD
|
||
? 2 * sizeof (Elf64_External_Rela)
|
||
: sizeof (Elf64_External_Rela));
|
||
}
|
||
else
|
||
gent->got.offset = (bfd_vma) -1;
|
||
|
||
if (eh->dyn_relocs == NULL)
|
||
return TRUE;
|
||
|
||
/* In the shared -Bsymbolic case, discard space allocated for
|
||
dynamic pc-relative relocs against symbols which turn out to be
|
||
defined in regular objects. For the normal shared case, discard
|
||
space for relocs that have become local due to symbol visibility
|
||
changes. */
|
||
|
||
if (info->shared)
|
||
{
|
||
/* Relocs that use pc_count are those that appear on a call insn,
|
||
or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
|
||
generated via assembly. We want calls to protected symbols to
|
||
resolve directly to the function rather than going via the plt.
|
||
If people want function pointer comparisons to work as expected
|
||
then they should avoid writing weird assembly. */
|
||
if (SYMBOL_CALLS_LOCAL (info, h))
|
||
{
|
||
struct ppc_dyn_relocs **pp;
|
||
|
||
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
|
||
{
|
||
p->count -= p->pc_count;
|
||
p->pc_count = 0;
|
||
if (p->count == 0)
|
||
*pp = p->next;
|
||
else
|
||
pp = &p->next;
|
||
}
|
||
}
|
||
|
||
/* Also discard relocs on undefined weak syms with non-default
|
||
visibility. */
|
||
if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
|
||
&& h->root.type == bfd_link_hash_undefweak)
|
||
eh->dyn_relocs = NULL;
|
||
}
|
||
else if (ELIMINATE_COPY_RELOCS)
|
||
{
|
||
/* For the non-shared case, discard space for relocs against
|
||
symbols which turn out to need copy relocs or are not
|
||
dynamic. */
|
||
|
||
if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
|
||
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
|
||
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
|
||
{
|
||
/* Make sure this symbol is output as a dynamic symbol.
|
||
Undefined weak syms won't yet be marked as dynamic. */
|
||
if (h->dynindx == -1
|
||
&& (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
|
||
{
|
||
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
||
return FALSE;
|
||
}
|
||
|
||
/* If that succeeded, we know we'll be keeping all the
|
||
relocs. */
|
||
if (h->dynindx != -1)
|
||
goto keep;
|
||
}
|
||
|
||
eh->dyn_relocs = NULL;
|
||
|
||
keep: ;
|
||
}
|
||
|
||
/* Finally, allocate space. */
|
||
for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
||
{
|
||
asection *sreloc = elf_section_data (p->sec)->sreloc;
|
||
sreloc->size += p->count * sizeof (Elf64_External_Rela);
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Find any dynamic relocs that apply to read-only sections. */
|
||
|
||
static bfd_boolean
|
||
readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
|
||
{
|
||
struct ppc_link_hash_entry *eh;
|
||
struct ppc_dyn_relocs *p;
|
||
|
||
if (h->root.type == bfd_link_hash_warning)
|
||
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
||
|
||
eh = (struct ppc_link_hash_entry *) h;
|
||
for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
||
{
|
||
asection *s = p->sec->output_section;
|
||
|
||
if (s != NULL && (s->flags & SEC_READONLY) != 0)
|
||
{
|
||
struct bfd_link_info *info = inf;
|
||
|
||
info->flags |= DF_TEXTREL;
|
||
|
||
/* Not an error, just cut short the traversal. */
|
||
return FALSE;
|
||
}
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/* Set the sizes of the dynamic sections. */
|
||
|
||
static bfd_boolean
|
||
ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
|
||
struct bfd_link_info *info)
|
||
{
|
||
struct ppc_link_hash_table *htab;
|
||
bfd *dynobj;
|
||
asection *s;
|
||
bfd_boolean relocs;
|
||
bfd *ibfd;
|
||
|
||
htab = ppc_hash_table (info);
|
||
dynobj = htab->elf.dynobj;
|
||
if (dynobj == NULL)
|
||
abort ();
|
||
|
||
if (htab->elf.dynamic_sections_created)
|
||
{
|
||
/* Set the contents of the .interp section to the interpreter. */
|
||
if (info->executable)
|
||
{
|
||
s = bfd_get_section_by_name (dynobj, ".interp");
|
||
if (s == NULL)
|
||
abort ();
|
||
s->size = sizeof ELF_DYNAMIC_INTERPRETER;
|
||
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
|
||
}
|
||
}
|
||
|
||
/* Set up .got offsets for local syms, and space for local dynamic
|
||
relocs. */
|
||
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
||
{
|
||
struct got_entry **lgot_ents;
|
||
struct got_entry **end_lgot_ents;
|
||
char *lgot_masks;
|
||
bfd_size_type locsymcount;
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
asection *srel;
|
||
|
||
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
|
||
continue;
|
||
|
||
if (ppc64_tlsld_got (ibfd)->refcount > 0)
|
||
{
|
||
s = ppc64_elf_tdata (ibfd)->got;
|
||
ppc64_tlsld_got (ibfd)->offset = s->size;
|
||
s->size += 16;
|
||
if (info->shared)
|
||
{
|
||
srel = ppc64_elf_tdata (ibfd)->relgot;
|
||
srel->size += sizeof (Elf64_External_Rela);
|
||
}
|
||
}
|
||
else
|
||
ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
|
||
|
||
for (s = ibfd->sections; s != NULL; s = s->next)
|
||
{
|
||
struct ppc_dyn_relocs *p;
|
||
|
||
for (p = *((struct ppc_dyn_relocs **)
|
||
&elf_section_data (s)->local_dynrel);
|
||
p != NULL;
|
||
p = p->next)
|
||
{
|
||
if (!bfd_is_abs_section (p->sec)
|
||
&& bfd_is_abs_section (p->sec->output_section))
|
||
{
|
||
/* Input section has been discarded, either because
|
||
it is a copy of a linkonce section or due to
|
||
linker script /DISCARD/, so we'll be discarding
|
||
the relocs too. */
|
||
}
|
||
else if (p->count != 0)
|
||
{
|
||
srel = elf_section_data (p->sec)->sreloc;
|
||
srel->size += p->count * sizeof (Elf64_External_Rela);
|
||
if ((p->sec->output_section->flags & SEC_READONLY) != 0)
|
||
info->flags |= DF_TEXTREL;
|
||
}
|
||
}
|
||
}
|
||
|
||
lgot_ents = elf_local_got_ents (ibfd);
|
||
if (!lgot_ents)
|
||
continue;
|
||
|
||
symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
|
||
locsymcount = symtab_hdr->sh_info;
|
||
end_lgot_ents = lgot_ents + locsymcount;
|
||
lgot_masks = (char *) end_lgot_ents;
|
||
s = ppc64_elf_tdata (ibfd)->got;
|
||
srel = ppc64_elf_tdata (ibfd)->relgot;
|
||
for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
|
||
{
|
||
struct got_entry *ent;
|
||
|
||
for (ent = *lgot_ents; ent != NULL; ent = ent->next)
|
||
if (ent->got.refcount > 0)
|
||
{
|
||
if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
|
||
{
|
||
if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
|
||
{
|
||
ppc64_tlsld_got (ibfd)->offset = s->size;
|
||
s->size += 16;
|
||
if (info->shared)
|
||
srel->size += sizeof (Elf64_External_Rela);
|
||
}
|
||
ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
|
||
}
|
||
else
|
||
{
|
||
ent->got.offset = s->size;
|
||
if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
|
||
{
|
||
s->size += 16;
|
||
if (info->shared)
|
||
srel->size += 2 * sizeof (Elf64_External_Rela);
|
||
}
|
||
else
|
||
{
|
||
s->size += 8;
|
||
if (info->shared)
|
||
srel->size += sizeof (Elf64_External_Rela);
|
||
}
|
||
}
|
||
}
|
||
else
|
||
ent->got.offset = (bfd_vma) -1;
|
||
}
|
||
}
|
||
|
||
/* Allocate global sym .plt and .got entries, and space for global
|
||
sym dynamic relocs. */
|
||
elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
|
||
|
||
/* We now have determined the sizes of the various dynamic sections.
|
||
Allocate memory for them. */
|
||
relocs = FALSE;
|
||
for (s = dynobj->sections; s != NULL; s = s->next)
|
||
{
|
||
if ((s->flags & SEC_LINKER_CREATED) == 0)
|
||
continue;
|
||
|
||
if (s == htab->brlt || s == htab->relbrlt)
|
||
/* These haven't been allocated yet; don't strip. */
|
||
continue;
|
||
else if (s == htab->got
|
||
|| s == htab->plt
|
||
|| s == htab->glink)
|
||
{
|
||
/* Strip this section if we don't need it; see the
|
||
comment below. */
|
||
}
|
||
else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
|
||
{
|
||
if (s->size == 0)
|
||
{
|
||
/* If we don't need this section, strip it from the
|
||
output file. This is mostly to handle .rela.bss and
|
||
.rela.plt. We must create both sections in
|
||
create_dynamic_sections, because they must be created
|
||
before the linker maps input sections to output
|
||
sections. The linker does that before
|
||
adjust_dynamic_symbol is called, and it is that
|
||
function which decides whether anything needs to go
|
||
into these sections. */
|
||
}
|
||
else
|
||
{
|
||
if (s != htab->relplt)
|
||
relocs = TRUE;
|
||
|
||
/* We use the reloc_count field as a counter if we need
|
||
to copy relocs into the output file. */
|
||
s->reloc_count = 0;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* It's not one of our sections, so don't allocate space. */
|
||
continue;
|
||
}
|
||
|
||
if (s->size == 0)
|
||
{
|
||
_bfd_strip_section_from_output (info, s);
|
||
continue;
|
||
}
|
||
|
||
/* .plt is in the bss section. We don't initialise it. */
|
||
if (s == htab->plt)
|
||
continue;
|
||
|
||
/* Allocate memory for the section contents. We use bfd_zalloc
|
||
here in case unused entries are not reclaimed before the
|
||
section's contents are written out. This should not happen,
|
||
but this way if it does we get a R_PPC64_NONE reloc in .rela
|
||
sections instead of garbage.
|
||
We also rely on the section contents being zero when writing
|
||
the GOT. */
|
||
s->contents = bfd_zalloc (dynobj, s->size);
|
||
if (s->contents == NULL)
|
||
return FALSE;
|
||
}
|
||
|
||
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
||
{
|
||
s = ppc64_elf_tdata (ibfd)->got;
|
||
if (s != NULL && s != htab->got)
|
||
{
|
||
if (s->size == 0)
|
||
_bfd_strip_section_from_output (info, s);
|
||
else
|
||
{
|
||
s->contents = bfd_zalloc (ibfd, s->size);
|
||
if (s->contents == NULL)
|
||
return FALSE;
|
||
}
|
||
}
|
||
s = ppc64_elf_tdata (ibfd)->relgot;
|
||
if (s != NULL)
|
||
{
|
||
if (s->size == 0)
|
||
_bfd_strip_section_from_output (info, s);
|
||
else
|
||
{
|
||
s->contents = bfd_zalloc (ibfd, s->size);
|
||
if (s->contents == NULL)
|
||
return FALSE;
|
||
relocs = TRUE;
|
||
s->reloc_count = 0;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (htab->elf.dynamic_sections_created)
|
||
{
|
||
/* Add some entries to the .dynamic section. We fill in the
|
||
values later, in ppc64_elf_finish_dynamic_sections, but we
|
||
must add the entries now so that we get the correct size for
|
||
the .dynamic section. The DT_DEBUG entry is filled in by the
|
||
dynamic linker and used by the debugger. */
|
||
#define add_dynamic_entry(TAG, VAL) \
|
||
_bfd_elf_add_dynamic_entry (info, TAG, VAL)
|
||
|
||
if (info->executable)
|
||
{
|
||
if (!add_dynamic_entry (DT_DEBUG, 0))
|
||
return FALSE;
|
||
}
|
||
|
||
if (htab->plt != NULL && htab->plt->size != 0)
|
||
{
|
||
if (!add_dynamic_entry (DT_PLTGOT, 0)
|
||
|| !add_dynamic_entry (DT_PLTRELSZ, 0)
|
||
|| !add_dynamic_entry (DT_PLTREL, DT_RELA)
|
||
|| !add_dynamic_entry (DT_JMPREL, 0)
|
||
|| !add_dynamic_entry (DT_PPC64_GLINK, 0))
|
||
return FALSE;
|
||
}
|
||
|
||
if (NO_OPD_RELOCS)
|
||
{
|
||
if (!add_dynamic_entry (DT_PPC64_OPD, 0)
|
||
|| !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
|
||
return FALSE;
|
||
}
|
||
|
||
if (relocs)
|
||
{
|
||
if (!add_dynamic_entry (DT_RELA, 0)
|
||
|| !add_dynamic_entry (DT_RELASZ, 0)
|
||
|| !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
|
||
return FALSE;
|
||
|
||
/* If any dynamic relocs apply to a read-only section,
|
||
then we need a DT_TEXTREL entry. */
|
||
if ((info->flags & DF_TEXTREL) == 0)
|
||
elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
|
||
|
||
if ((info->flags & DF_TEXTREL) != 0)
|
||
{
|
||
if (!add_dynamic_entry (DT_TEXTREL, 0))
|
||
return FALSE;
|
||
}
|
||
}
|
||
}
|
||
#undef add_dynamic_entry
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Determine the type of stub needed, if any, for a call. */
|
||
|
||
static inline enum ppc_stub_type
|
||
ppc_type_of_stub (asection *input_sec,
|
||
const Elf_Internal_Rela *rel,
|
||
struct ppc_link_hash_entry **hash,
|
||
bfd_vma destination)
|
||
{
|
||
struct ppc_link_hash_entry *h = *hash;
|
||
bfd_vma location;
|
||
bfd_vma branch_offset;
|
||
bfd_vma max_branch_offset;
|
||
enum elf_ppc64_reloc_type r_type;
|
||
|
||
if (h != NULL)
|
||
{
|
||
if (h->oh != NULL
|
||
&& h->oh->dynindx != -1)
|
||
{
|
||
struct plt_entry *ent;
|
||
for (ent = h->oh->plt.plist; ent != NULL; ent = ent->next)
|
||
if (ent->addend == rel->r_addend
|
||
&& ent->plt.offset != (bfd_vma) -1)
|
||
{
|
||
*hash = (struct ppc_link_hash_entry *) h->oh;
|
||
return ppc_stub_plt_call;
|
||
}
|
||
}
|
||
|
||
if (!(h->elf.root.type == bfd_link_hash_defined
|
||
|| h->elf.root.type == bfd_link_hash_defweak)
|
||
|| h->elf.root.u.def.section->output_section == NULL)
|
||
return ppc_stub_none;
|
||
}
|
||
|
||
/* Determine where the call point is. */
|
||
location = (input_sec->output_offset
|
||
+ input_sec->output_section->vma
|
||
+ rel->r_offset);
|
||
|
||
branch_offset = destination - location;
|
||
r_type = ELF64_R_TYPE (rel->r_info);
|
||
|
||
/* Determine if a long branch stub is needed. */
|
||
max_branch_offset = 1 << 25;
|
||
if (r_type != R_PPC64_REL24)
|
||
max_branch_offset = 1 << 15;
|
||
|
||
if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
|
||
/* We need a stub. Figure out whether a long_branch or plt_branch
|
||
is needed later. */
|
||
return ppc_stub_long_branch;
|
||
|
||
return ppc_stub_none;
|
||
}
|
||
|
||
/* Build a .plt call stub. */
|
||
|
||
static inline bfd_byte *
|
||
build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
|
||
{
|
||
#define PPC_LO(v) ((v) & 0xffff)
|
||
#define PPC_HI(v) (((v) >> 16) & 0xffff)
|
||
#define PPC_HA(v) PPC_HI ((v) + 0x8000)
|
||
|
||
bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
|
||
bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
|
||
bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
|
||
if (PPC_HA (offset + 8) != PPC_HA (offset))
|
||
bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
|
||
offset += 8;
|
||
bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
|
||
if (PPC_HA (offset + 8) != PPC_HA (offset))
|
||
bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
|
||
offset += 8;
|
||
bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
|
||
bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
|
||
bfd_put_32 (obfd, BCTR, p), p += 4;
|
||
return p;
|
||
}
|
||
|
||
static bfd_boolean
|
||
ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
|
||
{
|
||
struct ppc_stub_hash_entry *stub_entry;
|
||
struct ppc_branch_hash_entry *br_entry;
|
||
struct bfd_link_info *info;
|
||
struct ppc_link_hash_table *htab;
|
||
bfd_byte *loc;
|
||
bfd_byte *p;
|
||
unsigned int indx;
|
||
struct plt_entry *ent;
|
||
bfd_vma off;
|
||
int size;
|
||
|
||
/* Massage our args to the form they really have. */
|
||
stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
|
||
info = in_arg;
|
||
|
||
htab = ppc_hash_table (info);
|
||
|
||
/* Make a note of the offset within the stubs for this entry. */
|
||
stub_entry->stub_offset = stub_entry->stub_sec->size;
|
||
loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
|
||
|
||
htab->stub_count[stub_entry->stub_type - 1] += 1;
|
||
switch (stub_entry->stub_type)
|
||
{
|
||
case ppc_stub_long_branch:
|
||
case ppc_stub_long_branch_r2off:
|
||
/* Branches are relative. This is where we are going to. */
|
||
off = (stub_entry->target_value
|
||
+ stub_entry->target_section->output_offset
|
||
+ stub_entry->target_section->output_section->vma);
|
||
|
||
/* And this is where we are coming from. */
|
||
off -= (stub_entry->stub_offset
|
||
+ stub_entry->stub_sec->output_offset
|
||
+ stub_entry->stub_sec->output_section->vma);
|
||
|
||
if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
|
||
size = 4;
|
||
else
|
||
{
|
||
bfd_vma r2off;
|
||
|
||
r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
|
||
- htab->stub_group[stub_entry->id_sec->id].toc_off);
|
||
bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
|
||
loc += 4;
|
||
bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
|
||
loc += 4;
|
||
bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
|
||
loc += 4;
|
||
off -= 12;
|
||
size = 16;
|
||
}
|
||
bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
|
||
|
||
BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
|
||
break;
|
||
|
||
case ppc_stub_plt_branch:
|
||
case ppc_stub_plt_branch_r2off:
|
||
br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
|
||
stub_entry->root.string + 9,
|
||
FALSE, FALSE);
|
||
if (br_entry == NULL)
|
||
{
|
||
(*_bfd_error_handler) (_("can't find branch stub `%s'"),
|
||
stub_entry->root.string + 9);
|
||
htab->stub_error = TRUE;
|
||
return FALSE;
|
||
}
|
||
|
||
off = (stub_entry->target_value
|
||
+ stub_entry->target_section->output_offset
|
||
+ stub_entry->target_section->output_section->vma);
|
||
|
||
bfd_put_64 (htab->brlt->owner, off,
|
||
htab->brlt->contents + br_entry->offset);
|
||
|
||
if (info->shared)
|
||
{
|
||
/* Create a reloc for the branch lookup table entry. */
|
||
Elf_Internal_Rela rela;
|
||
bfd_byte *rl;
|
||
|
||
rela.r_offset = (br_entry->offset
|
||
+ htab->brlt->output_offset
|
||
+ htab->brlt->output_section->vma);
|
||
rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
|
||
rela.r_addend = off;
|
||
|
||
rl = htab->relbrlt->contents;
|
||
rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
|
||
bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
|
||
}
|
||
|
||
off = (br_entry->offset
|
||
+ htab->brlt->output_offset
|
||
+ htab->brlt->output_section->vma
|
||
- elf_gp (htab->brlt->output_section->owner)
|
||
- htab->stub_group[stub_entry->id_sec->id].toc_off);
|
||
|
||
if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("linkage table error against `%s'"),
|
||
stub_entry->root.string);
|
||
bfd_set_error (bfd_error_bad_value);
|
||
htab->stub_error = TRUE;
|
||
return FALSE;
|
||
}
|
||
|
||
indx = off;
|
||
if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
|
||
{
|
||
bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
|
||
loc += 4;
|
||
bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
|
||
size = 16;
|
||
}
|
||
else
|
||
{
|
||
bfd_vma r2off;
|
||
|
||
r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
|
||
- htab->stub_group[stub_entry->id_sec->id].toc_off);
|
||
bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
|
||
loc += 4;
|
||
bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
|
||
loc += 4;
|
||
bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
|
||
loc += 4;
|
||
bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
|
||
loc += 4;
|
||
bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
|
||
size = 28;
|
||
}
|
||
loc += 4;
|
||
bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
|
||
loc += 4;
|
||
bfd_put_32 (htab->stub_bfd, BCTR, loc);
|
||
break;
|
||
|
||
case ppc_stub_plt_call:
|
||
/* Do the best we can for shared libraries built without
|
||
exporting ".foo" for each "foo". This can happen when symbol
|
||
versioning scripts strip all bar a subset of symbols. */
|
||
if (stub_entry->h->oh->root.type != bfd_link_hash_defined
|
||
&& stub_entry->h->oh->root.type != bfd_link_hash_defweak)
|
||
{
|
||
/* Point the symbol at the stub. There may be multiple stubs,
|
||
we don't really care; The main thing is to make this sym
|
||
defined somewhere. Maybe defining the symbol in the stub
|
||
section is a silly idea. If we didn't do this, htab->top_id
|
||
could disappear. */
|
||
stub_entry->h->oh->root.type = bfd_link_hash_defined;
|
||
stub_entry->h->oh->root.u.def.section = stub_entry->stub_sec;
|
||
stub_entry->h->oh->root.u.def.value = stub_entry->stub_offset;
|
||
}
|
||
|
||
/* Now build the stub. */
|
||
off = (bfd_vma) -1;
|
||
for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
|
||
if (ent->addend == stub_entry->addend)
|
||
{
|
||
off = ent->plt.offset;
|
||
break;
|
||
}
|
||
if (off >= (bfd_vma) -2)
|
||
abort ();
|
||
|
||
off &= ~ (bfd_vma) 1;
|
||
off += (htab->plt->output_offset
|
||
+ htab->plt->output_section->vma
|
||
- elf_gp (htab->plt->output_section->owner)
|
||
- htab->stub_group[stub_entry->id_sec->id].toc_off);
|
||
|
||
if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("linkage table error against `%s'"),
|
||
stub_entry->h->elf.root.root.string);
|
||
bfd_set_error (bfd_error_bad_value);
|
||
htab->stub_error = TRUE;
|
||
return FALSE;
|
||
}
|
||
|
||
p = build_plt_stub (htab->stub_bfd, loc, off);
|
||
size = p - loc;
|
||
break;
|
||
|
||
default:
|
||
BFD_FAIL ();
|
||
return FALSE;
|
||
}
|
||
|
||
stub_entry->stub_sec->size += size;
|
||
|
||
if (htab->emit_stub_syms
|
||
&& !(stub_entry->stub_type == ppc_stub_plt_call
|
||
&& stub_entry->h->oh->root.type == bfd_link_hash_defined
|
||
&& stub_entry->h->oh->root.u.def.section == stub_entry->stub_sec
|
||
&& stub_entry->h->oh->root.u.def.value == stub_entry->stub_offset))
|
||
{
|
||
struct elf_link_hash_entry *h;
|
||
h = elf_link_hash_lookup (&htab->elf, stub_entry->root.string,
|
||
TRUE, FALSE, FALSE);
|
||
if (h == NULL)
|
||
return FALSE;
|
||
if (h->root.type == bfd_link_hash_new)
|
||
{
|
||
h->root.type = bfd_link_hash_defined;
|
||
h->root.u.def.section = stub_entry->stub_sec;
|
||
h->root.u.def.value = stub_entry->stub_offset;
|
||
h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR
|
||
| ELF_LINK_HASH_DEF_REGULAR
|
||
| ELF_LINK_HASH_REF_REGULAR_NONWEAK
|
||
| ELF_LINK_FORCED_LOCAL);
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* As above, but don't actually build the stub. Just bump offset so
|
||
we know stub section sizes, and select plt_branch stubs where
|
||
long_branch stubs won't do. */
|
||
|
||
static bfd_boolean
|
||
ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
|
||
{
|
||
struct ppc_stub_hash_entry *stub_entry;
|
||
struct bfd_link_info *info;
|
||
struct ppc_link_hash_table *htab;
|
||
bfd_vma off;
|
||
int size;
|
||
|
||
/* Massage our args to the form they really have. */
|
||
stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
|
||
info = in_arg;
|
||
|
||
htab = ppc_hash_table (info);
|
||
|
||
if (stub_entry->stub_type == ppc_stub_plt_call)
|
||
{
|
||
struct plt_entry *ent;
|
||
off = (bfd_vma) -1;
|
||
for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
|
||
if (ent->addend == stub_entry->addend)
|
||
{
|
||
off = ent->plt.offset & ~(bfd_vma) 1;
|
||
break;
|
||
}
|
||
if (off >= (bfd_vma) -2)
|
||
abort ();
|
||
off += (htab->plt->output_offset
|
||
+ htab->plt->output_section->vma
|
||
- elf_gp (htab->plt->output_section->owner)
|
||
- htab->stub_group[stub_entry->id_sec->id].toc_off);
|
||
|
||
size = PLT_CALL_STUB_SIZE;
|
||
if (PPC_HA (off + 16) != PPC_HA (off))
|
||
size += 4;
|
||
}
|
||
else
|
||
{
|
||
/* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
|
||
variants. */
|
||
off = (stub_entry->target_value
|
||
+ stub_entry->target_section->output_offset
|
||
+ stub_entry->target_section->output_section->vma);
|
||
off -= (stub_entry->stub_sec->size
|
||
+ stub_entry->stub_sec->output_offset
|
||
+ stub_entry->stub_sec->output_section->vma);
|
||
|
||
/* Reset the stub type from the plt variant in case we now
|
||
can reach with a shorter stub. */
|
||
if (stub_entry->stub_type >= ppc_stub_plt_branch)
|
||
stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
|
||
|
||
size = 4;
|
||
if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
|
||
{
|
||
off -= 12;
|
||
size = 16;
|
||
}
|
||
|
||
/* If the branch offset if too big, use a ppc_stub_plt_branch. */
|
||
if (off + (1 << 25) >= (bfd_vma) (1 << 26))
|
||
{
|
||
struct ppc_branch_hash_entry *br_entry;
|
||
|
||
br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
|
||
stub_entry->root.string + 9,
|
||
TRUE, FALSE);
|
||
if (br_entry == NULL)
|
||
{
|
||
(*_bfd_error_handler) (_("can't build branch stub `%s'"),
|
||
stub_entry->root.string + 9);
|
||
htab->stub_error = TRUE;
|
||
return FALSE;
|
||
}
|
||
|
||
if (br_entry->iter != htab->stub_iteration)
|
||
{
|
||
br_entry->iter = htab->stub_iteration;
|
||
br_entry->offset = htab->brlt->size;
|
||
htab->brlt->size += 8;
|
||
|
||
if (info->shared)
|
||
htab->relbrlt->size += sizeof (Elf64_External_Rela);
|
||
}
|
||
|
||
stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
|
||
size = 16;
|
||
if (stub_entry->stub_type != ppc_stub_plt_branch)
|
||
size = 28;
|
||
}
|
||
}
|
||
|
||
stub_entry->stub_sec->size += size;
|
||
return TRUE;
|
||
}
|
||
|
||
/* Set up various things so that we can make a list of input sections
|
||
for each output section included in the link. Returns -1 on error,
|
||
0 when no stubs will be needed, and 1 on success. */
|
||
|
||
int
|
||
ppc64_elf_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
|
||
{
|
||
bfd *input_bfd;
|
||
int top_id, top_index, id;
|
||
asection *section;
|
||
asection **input_list;
|
||
bfd_size_type amt;
|
||
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
||
|
||
if (htab->brlt == NULL)
|
||
return 0;
|
||
|
||
/* Find the top input section id. */
|
||
for (input_bfd = info->input_bfds, top_id = 3;
|
||
input_bfd != NULL;
|
||
input_bfd = input_bfd->link_next)
|
||
{
|
||
for (section = input_bfd->sections;
|
||
section != NULL;
|
||
section = section->next)
|
||
{
|
||
if (top_id < section->id)
|
||
top_id = section->id;
|
||
}
|
||
}
|
||
|
||
htab->top_id = top_id;
|
||
amt = sizeof (struct map_stub) * (top_id + 1);
|
||
htab->stub_group = bfd_zmalloc (amt);
|
||
if (htab->stub_group == NULL)
|
||
return -1;
|
||
|
||
/* Set toc_off for com, und, abs and ind sections. */
|
||
for (id = 0; id < 3; id++)
|
||
htab->stub_group[id].toc_off = TOC_BASE_OFF;
|
||
|
||
elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
|
||
|
||
/* We can't use output_bfd->section_count here to find the top output
|
||
section index as some sections may have been removed, and
|
||
_bfd_strip_section_from_output doesn't renumber the indices. */
|
||
for (section = output_bfd->sections, top_index = 0;
|
||
section != NULL;
|
||
section = section->next)
|
||
{
|
||
if (top_index < section->index)
|
||
top_index = section->index;
|
||
}
|
||
|
||
htab->top_index = top_index;
|
||
amt = sizeof (asection *) * (top_index + 1);
|
||
input_list = bfd_zmalloc (amt);
|
||
htab->input_list = input_list;
|
||
if (input_list == NULL)
|
||
return -1;
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* The linker repeatedly calls this function for each TOC input section
|
||
and linker generated GOT section. Group input bfds such that the toc
|
||
within a group is less than 64k in size. Will break with cute linker
|
||
scripts that play games with dot in the output toc section. */
|
||
|
||
void
|
||
ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
|
||
{
|
||
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
||
|
||
if (!htab->no_multi_toc)
|
||
{
|
||
bfd_vma addr = isec->output_offset + isec->output_section->vma;
|
||
bfd_vma off = addr - htab->toc_curr;
|
||
if (off + isec->size > 0x10000)
|
||
{
|
||
htab->toc_curr = addr;
|
||
htab->multi_toc_needed = 1;
|
||
}
|
||
elf_gp (isec->owner) = (htab->toc_curr
|
||
- elf_gp (isec->output_section->owner)
|
||
+ TOC_BASE_OFF);
|
||
}
|
||
}
|
||
|
||
/* Called after the last call to the above function. */
|
||
|
||
void
|
||
ppc64_elf_reinit_toc (bfd *output_bfd ATTRIBUTE_UNUSED,
|
||
struct bfd_link_info *info)
|
||
{
|
||
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
||
|
||
/* toc_curr tracks the TOC offset used for code sections below in
|
||
ppc64_elf_next_input_section. Start off at 0x8000. */
|
||
htab->toc_curr = TOC_BASE_OFF;
|
||
}
|
||
|
||
/* No toc references were found in ISEC. If the code in ISEC makes no
|
||
calls, then there's no need to use toc adjusting stubs when branching
|
||
into ISEC. Actually, indirect calls from ISEC are OK as they will
|
||
load r2. */
|
||
|
||
static int
|
||
toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
|
||
{
|
||
bfd_byte *contents;
|
||
bfd_size_type i;
|
||
int ret;
|
||
int branch_ok;
|
||
|
||
/* We know none of our code bearing sections will need toc stubs. */
|
||
if ((isec->flags & SEC_LINKER_CREATED) != 0)
|
||
return 0;
|
||
|
||
if (isec->size == 0)
|
||
return 0;
|
||
|
||
/* Hack for linux kernel. .fixup contains branches, but only back to
|
||
the function that hit an exception. */
|
||
branch_ok = strcmp (isec->name, ".fixup") == 0;
|
||
|
||
contents = elf_section_data (isec)->this_hdr.contents;
|
||
if (contents == NULL)
|
||
{
|
||
if (!bfd_malloc_and_get_section (isec->owner, isec, &contents))
|
||
{
|
||
if (contents != NULL)
|
||
free (contents);
|
||
return -1;
|
||
}
|
||
if (info->keep_memory)
|
||
elf_section_data (isec)->this_hdr.contents = contents;
|
||
}
|
||
|
||
/* Code scan, because we don't necessarily have relocs on calls to
|
||
static functions. */
|
||
ret = 0;
|
||
for (i = 0; i < isec->size; i += 4)
|
||
{
|
||
unsigned long insn = bfd_get_32 (isec->owner, contents + i);
|
||
/* Is this a branch? */
|
||
if ((insn & (0x3f << 26)) == (18 << 26)
|
||
/* If branch and link, it's a function call. */
|
||
&& ((insn & 1) != 0
|
||
/* Sibling calls use a plain branch. I don't know a way
|
||
of deciding whether a branch is really a sibling call. */
|
||
|| !branch_ok))
|
||
{
|
||
ret = 1;
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (elf_section_data (isec)->this_hdr.contents != contents)
|
||
free (contents);
|
||
return ret;
|
||
}
|
||
|
||
/* The linker repeatedly calls this function for each input section,
|
||
in the order that input sections are linked into output sections.
|
||
Build lists of input sections to determine groupings between which
|
||
we may insert linker stubs. */
|
||
|
||
bfd_boolean
|
||
ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
|
||
{
|
||
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
||
int ret;
|
||
|
||
if ((isec->output_section->flags & SEC_CODE) != 0
|
||
&& isec->output_section->index <= htab->top_index)
|
||
{
|
||
asection **list = htab->input_list + isec->output_section->index;
|
||
/* Steal the link_sec pointer for our list. */
|
||
#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
|
||
/* This happens to make the list in reverse order,
|
||
which is what we want. */
|
||
PREV_SEC (isec) = *list;
|
||
*list = isec;
|
||
}
|
||
|
||
/* If a code section has a function that uses the TOC then we need
|
||
to use the right TOC (obviously). Also, make sure that .opd gets
|
||
the correct TOC value for R_PPC64_TOC relocs that don't have or
|
||
can't find their function symbol (shouldn't ever happen now). */
|
||
if (isec->has_gp_reloc || (isec->flags & SEC_CODE) == 0)
|
||
{
|
||
if (elf_gp (isec->owner) != 0)
|
||
htab->toc_curr = elf_gp (isec->owner);
|
||
}
|
||
else if ((ret = toc_adjusting_stub_needed (info, isec)) < 0)
|
||
return FALSE;
|
||
else
|
||
isec->has_gp_reloc = ret;
|
||
|
||
/* Functions that don't use the TOC can belong in any TOC group.
|
||
Use the last TOC base. This happens to make _init and _fini
|
||
pasting work. */
|
||
htab->stub_group[isec->id].toc_off = htab->toc_curr;
|
||
return TRUE;
|
||
}
|
||
|
||
/* See whether we can group stub sections together. Grouping stub
|
||
sections may result in fewer stubs. More importantly, we need to
|
||
put all .init* and .fini* stubs at the beginning of the .init or
|
||
.fini output sections respectively, because glibc splits the
|
||
_init and _fini functions into multiple parts. Putting a stub in
|
||
the middle of a function is not a good idea. */
|
||
|
||
static void
|
||
group_sections (struct ppc_link_hash_table *htab,
|
||
bfd_size_type stub_group_size,
|
||
bfd_boolean stubs_always_before_branch)
|
||
{
|
||
asection **list = htab->input_list + htab->top_index;
|
||
do
|
||
{
|
||
asection *tail = *list;
|
||
while (tail != NULL)
|
||
{
|
||
asection *curr;
|
||
asection *prev;
|
||
bfd_size_type total;
|
||
bfd_boolean big_sec;
|
||
bfd_vma curr_toc;
|
||
|
||
curr = tail;
|
||
total = tail->size;
|
||
big_sec = total >= stub_group_size;
|
||
curr_toc = htab->stub_group[tail->id].toc_off;
|
||
|
||
while ((prev = PREV_SEC (curr)) != NULL
|
||
&& ((total += curr->output_offset - prev->output_offset)
|
||
< stub_group_size)
|
||
&& htab->stub_group[prev->id].toc_off == curr_toc)
|
||
curr = prev;
|
||
|
||
/* OK, the size from the start of CURR to the end is less
|
||
than stub_group_size and thus can be handled by one stub
|
||
section. (or the tail section is itself larger than
|
||
stub_group_size, in which case we may be toast.) We
|
||
should really be keeping track of the total size of stubs
|
||
added here, as stubs contribute to the final output
|
||
section size. That's a little tricky, and this way will
|
||
only break if stubs added make the total size more than
|
||
2^25, ie. for the default stub_group_size, if stubs total
|
||
more than 2097152 bytes, or nearly 75000 plt call stubs. */
|
||
do
|
||
{
|
||
prev = PREV_SEC (tail);
|
||
/* Set up this stub group. */
|
||
htab->stub_group[tail->id].link_sec = curr;
|
||
}
|
||
while (tail != curr && (tail = prev) != NULL);
|
||
|
||
/* But wait, there's more! Input sections up to stub_group_size
|
||
bytes before the stub section can be handled by it too.
|
||
Don't do this if we have a really large section after the
|
||
stubs, as adding more stubs increases the chance that
|
||
branches may not reach into the stub section. */
|
||
if (!stubs_always_before_branch && !big_sec)
|
||
{
|
||
total = 0;
|
||
while (prev != NULL
|
||
&& ((total += tail->output_offset - prev->output_offset)
|
||
< stub_group_size)
|
||
&& htab->stub_group[prev->id].toc_off == curr_toc)
|
||
{
|
||
tail = prev;
|
||
prev = PREV_SEC (tail);
|
||
htab->stub_group[tail->id].link_sec = curr;
|
||
}
|
||
}
|
||
tail = prev;
|
||
}
|
||
}
|
||
while (list-- != htab->input_list);
|
||
free (htab->input_list);
|
||
#undef PREV_SEC
|
||
}
|
||
|
||
/* Determine and set the size of the stub section for a final link.
|
||
|
||
The basic idea here is to examine all the relocations looking for
|
||
PC-relative calls to a target that is unreachable with a "bl"
|
||
instruction. */
|
||
|
||
bfd_boolean
|
||
ppc64_elf_size_stubs (bfd *output_bfd,
|
||
struct bfd_link_info *info,
|
||
bfd_signed_vma group_size,
|
||
asection *(*add_stub_section) (const char *, asection *),
|
||
void (*layout_sections_again) (void))
|
||
{
|
||
bfd_size_type stub_group_size;
|
||
bfd_boolean stubs_always_before_branch;
|
||
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
||
|
||
/* Stash our params away. */
|
||
htab->add_stub_section = add_stub_section;
|
||
htab->layout_sections_again = layout_sections_again;
|
||
stubs_always_before_branch = group_size < 0;
|
||
if (group_size < 0)
|
||
stub_group_size = -group_size;
|
||
else
|
||
stub_group_size = group_size;
|
||
if (stub_group_size == 1)
|
||
{
|
||
/* Default values. */
|
||
if (stubs_always_before_branch)
|
||
{
|
||
stub_group_size = 0x1e00000;
|
||
if (htab->has_14bit_branch)
|
||
stub_group_size = 0x7800;
|
||
}
|
||
else
|
||
{
|
||
stub_group_size = 0x1c00000;
|
||
if (htab->has_14bit_branch)
|
||
stub_group_size = 0x7000;
|
||
}
|
||
}
|
||
|
||
group_sections (htab, stub_group_size, stubs_always_before_branch);
|
||
|
||
while (1)
|
||
{
|
||
bfd *input_bfd;
|
||
unsigned int bfd_indx;
|
||
asection *stub_sec;
|
||
bfd_boolean stub_changed;
|
||
|
||
htab->stub_iteration += 1;
|
||
stub_changed = FALSE;
|
||
|
||
for (input_bfd = info->input_bfds, bfd_indx = 0;
|
||
input_bfd != NULL;
|
||
input_bfd = input_bfd->link_next, bfd_indx++)
|
||
{
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
asection *section;
|
||
Elf_Internal_Sym *local_syms = NULL;
|
||
|
||
/* We'll need the symbol table in a second. */
|
||
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
||
if (symtab_hdr->sh_info == 0)
|
||
continue;
|
||
|
||
/* Walk over each section attached to the input bfd. */
|
||
for (section = input_bfd->sections;
|
||
section != NULL;
|
||
section = section->next)
|
||
{
|
||
Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
|
||
|
||
/* If there aren't any relocs, then there's nothing more
|
||
to do. */
|
||
if ((section->flags & SEC_RELOC) == 0
|
||
|| section->reloc_count == 0)
|
||
continue;
|
||
|
||
/* If this section is a link-once section that will be
|
||
discarded, then don't create any stubs. */
|
||
if (section->output_section == NULL
|
||
|| section->output_section->owner != output_bfd)
|
||
continue;
|
||
|
||
/* Get the relocs. */
|
||
internal_relocs
|
||
= _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
|
||
info->keep_memory);
|
||
if (internal_relocs == NULL)
|
||
goto error_ret_free_local;
|
||
|
||
/* Now examine each relocation. */
|
||
irela = internal_relocs;
|
||
irelaend = irela + section->reloc_count;
|
||
for (; irela < irelaend; irela++)
|
||
{
|
||
enum elf_ppc64_reloc_type r_type;
|
||
unsigned int r_indx;
|
||
enum ppc_stub_type stub_type;
|
||
struct ppc_stub_hash_entry *stub_entry;
|
||
asection *sym_sec;
|
||
bfd_vma sym_value;
|
||
bfd_vma destination;
|
||
struct ppc_link_hash_entry *hash;
|
||
struct elf_link_hash_entry *h;
|
||
Elf_Internal_Sym *sym;
|
||
char *stub_name;
|
||
const asection *id_sec;
|
||
|
||
r_type = ELF64_R_TYPE (irela->r_info);
|
||
r_indx = ELF64_R_SYM (irela->r_info);
|
||
|
||
if (r_type >= R_PPC64_max)
|
||
{
|
||
bfd_set_error (bfd_error_bad_value);
|
||
goto error_ret_free_internal;
|
||
}
|
||
|
||
/* Only look for stubs on branch instructions. */
|
||
if (r_type != R_PPC64_REL24
|
||
&& r_type != R_PPC64_REL14
|
||
&& r_type != R_PPC64_REL14_BRTAKEN
|
||
&& r_type != R_PPC64_REL14_BRNTAKEN)
|
||
continue;
|
||
|
||
/* Now determine the call target, its name, value,
|
||
section. */
|
||
destination = 0;
|
||
if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
|
||
r_indx, input_bfd))
|
||
goto error_ret_free_internal;
|
||
hash = (struct ppc_link_hash_entry *) h;
|
||
|
||
if (hash == NULL)
|
||
{
|
||
/* It's a local symbol. */
|
||
sym_value = sym->st_value;
|
||
destination = (sym_value + irela->r_addend
|
||
+ sym_sec->output_offset
|
||
+ sym_sec->output_section->vma);
|
||
}
|
||
else
|
||
{
|
||
/* It's an external symbol. */
|
||
sym_value = 0;
|
||
if (hash->elf.root.type == bfd_link_hash_defined
|
||
|| hash->elf.root.type == bfd_link_hash_defweak)
|
||
{
|
||
sym_value = hash->elf.root.u.def.value;
|
||
if (sym_sec->output_section != NULL)
|
||
destination = (sym_value + irela->r_addend
|
||
+ sym_sec->output_offset
|
||
+ sym_sec->output_section->vma);
|
||
}
|
||
else if (hash->elf.root.type == bfd_link_hash_undefweak)
|
||
;
|
||
else if (hash->elf.root.type == bfd_link_hash_undefined)
|
||
;
|
||
else
|
||
{
|
||
bfd_set_error (bfd_error_bad_value);
|
||
goto error_ret_free_internal;
|
||
}
|
||
}
|
||
|
||
/* Determine what (if any) linker stub is needed. */
|
||
stub_type = ppc_type_of_stub (section, irela, &hash,
|
||
destination);
|
||
|
||
if (stub_type != ppc_stub_plt_call)
|
||
{
|
||
/* Check whether we need a TOC adjusting stub.
|
||
Since the linker pastes together pieces from
|
||
different object files when creating the
|
||
_init and _fini functions, it may be that a
|
||
call to what looks like a local sym is in
|
||
fact a call needing a TOC adjustment. */
|
||
if (sym_sec != NULL
|
||
&& sym_sec->output_section != NULL
|
||
&& (htab->stub_group[sym_sec->id].toc_off
|
||
!= htab->stub_group[section->id].toc_off)
|
||
&& sym_sec->has_gp_reloc
|
||
&& section->has_gp_reloc)
|
||
stub_type = ppc_stub_long_branch_r2off;
|
||
}
|
||
|
||
if (stub_type == ppc_stub_none)
|
||
continue;
|
||
|
||
/* __tls_get_addr calls might be eliminated. */
|
||
if (stub_type != ppc_stub_plt_call
|
||
&& hash != NULL
|
||
&& &hash->elf == htab->tls_get_addr
|
||
&& section->has_tls_reloc
|
||
&& irela != internal_relocs)
|
||
{
|
||
/* Get tls info. */
|
||
char *tls_mask;
|
||
|
||
if (!get_tls_mask (&tls_mask, NULL, &local_syms,
|
||
irela - 1, input_bfd))
|
||
goto error_ret_free_internal;
|
||
if (*tls_mask != 0)
|
||
continue;
|
||
}
|
||
|
||
/* Support for grouping stub sections. */
|
||
id_sec = htab->stub_group[section->id].link_sec;
|
||
|
||
/* Get the name of this stub. */
|
||
stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
|
||
if (!stub_name)
|
||
goto error_ret_free_internal;
|
||
|
||
stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
|
||
stub_name, FALSE, FALSE);
|
||
if (stub_entry != NULL)
|
||
{
|
||
/* The proper stub has already been created. */
|
||
free (stub_name);
|
||
continue;
|
||
}
|
||
|
||
stub_entry = ppc_add_stub (stub_name, section, htab);
|
||
if (stub_entry == NULL)
|
||
{
|
||
free (stub_name);
|
||
error_ret_free_internal:
|
||
if (elf_section_data (section)->relocs == NULL)
|
||
free (internal_relocs);
|
||
error_ret_free_local:
|
||
if (local_syms != NULL
|
||
&& (symtab_hdr->contents
|
||
!= (unsigned char *) local_syms))
|
||
free (local_syms);
|
||
return FALSE;
|
||
}
|
||
|
||
stub_entry->stub_type = stub_type;
|
||
stub_entry->target_value = sym_value;
|
||
stub_entry->target_section = sym_sec;
|
||
stub_entry->h = hash;
|
||
stub_entry->addend = irela->r_addend;
|
||
stub_changed = TRUE;
|
||
}
|
||
|
||
/* We're done with the internal relocs, free them. */
|
||
if (elf_section_data (section)->relocs != internal_relocs)
|
||
free (internal_relocs);
|
||
}
|
||
|
||
if (local_syms != NULL
|
||
&& symtab_hdr->contents != (unsigned char *) local_syms)
|
||
{
|
||
if (!info->keep_memory)
|
||
free (local_syms);
|
||
else
|
||
symtab_hdr->contents = (unsigned char *) local_syms;
|
||
}
|
||
}
|
||
|
||
if (!stub_changed)
|
||
break;
|
||
|
||
/* OK, we've added some stubs. Find out the new size of the
|
||
stub sections. */
|
||
for (stub_sec = htab->stub_bfd->sections;
|
||
stub_sec != NULL;
|
||
stub_sec = stub_sec->next)
|
||
if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
|
||
stub_sec->size = 0;
|
||
|
||
htab->brlt->size = 0;
|
||
if (info->shared)
|
||
htab->relbrlt->size = 0;
|
||
|
||
bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
|
||
|
||
/* Ask the linker to do its stuff. */
|
||
(*htab->layout_sections_again) ();
|
||
}
|
||
|
||
/* It would be nice to strip .branch_lt from the output if the
|
||
section is empty, but it's too late. If we strip sections here,
|
||
the dynamic symbol table is corrupted since the section symbol
|
||
for the stripped section isn't written. */
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Called after we have determined section placement. If sections
|
||
move, we'll be called again. Provide a value for TOCstart. */
|
||
|
||
bfd_vma
|
||
ppc64_elf_toc (bfd *obfd)
|
||
{
|
||
asection *s;
|
||
bfd_vma TOCstart;
|
||
|
||
/* The TOC consists of sections .got, .toc, .tocbss, .plt in that
|
||
order. The TOC starts where the first of these sections starts. */
|
||
s = bfd_get_section_by_name (obfd, ".got");
|
||
if (s == NULL)
|
||
s = bfd_get_section_by_name (obfd, ".toc");
|
||
if (s == NULL)
|
||
s = bfd_get_section_by_name (obfd, ".tocbss");
|
||
if (s == NULL)
|
||
s = bfd_get_section_by_name (obfd, ".plt");
|
||
if (s == NULL)
|
||
{
|
||
/* This may happen for
|
||
o references to TOC base (SYM@toc / TOC[tc0]) without a
|
||
.toc directive
|
||
o bad linker script
|
||
o --gc-sections and empty TOC sections
|
||
|
||
FIXME: Warn user? */
|
||
|
||
/* Look for a likely section. We probably won't even be
|
||
using TOCstart. */
|
||
for (s = obfd->sections; s != NULL; s = s->next)
|
||
if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
|
||
== (SEC_ALLOC | SEC_SMALL_DATA))
|
||
break;
|
||
if (s == NULL)
|
||
for (s = obfd->sections; s != NULL; s = s->next)
|
||
if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
|
||
== (SEC_ALLOC | SEC_SMALL_DATA))
|
||
break;
|
||
if (s == NULL)
|
||
for (s = obfd->sections; s != NULL; s = s->next)
|
||
if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
|
||
break;
|
||
if (s == NULL)
|
||
for (s = obfd->sections; s != NULL; s = s->next)
|
||
if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
|
||
break;
|
||
}
|
||
|
||
TOCstart = 0;
|
||
if (s != NULL)
|
||
TOCstart = s->output_section->vma + s->output_offset;
|
||
|
||
return TOCstart;
|
||
}
|
||
|
||
/* Build all the stubs associated with the current output file.
|
||
The stubs are kept in a hash table attached to the main linker
|
||
hash table. This function is called via gldelf64ppc_finish. */
|
||
|
||
bfd_boolean
|
||
ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
|
||
struct bfd_link_info *info,
|
||
char **stats)
|
||
{
|
||
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
||
asection *stub_sec;
|
||
bfd_byte *p;
|
||
int stub_sec_count = 0;
|
||
|
||
htab->emit_stub_syms = emit_stub_syms;
|
||
|
||
/* Allocate memory to hold the linker stubs. */
|
||
for (stub_sec = htab->stub_bfd->sections;
|
||
stub_sec != NULL;
|
||
stub_sec = stub_sec->next)
|
||
if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
|
||
&& stub_sec->size != 0)
|
||
{
|
||
stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
|
||
if (stub_sec->contents == NULL)
|
||
return FALSE;
|
||
/* We want to check that built size is the same as calculated
|
||
size. rawsize is a convenient location to use. */
|
||
stub_sec->rawsize = stub_sec->size;
|
||
stub_sec->size = 0;
|
||
}
|
||
|
||
if (htab->plt != NULL)
|
||
{
|
||
unsigned int indx;
|
||
bfd_vma plt0;
|
||
|
||
/* Build the .glink plt call stub. */
|
||
plt0 = (htab->plt->output_section->vma
|
||
+ htab->plt->output_offset
|
||
- (htab->glink->output_section->vma
|
||
+ htab->glink->output_offset
|
||
+ GLINK_CALL_STUB_SIZE));
|
||
if (plt0 + 0x80008000 > 0xffffffff)
|
||
{
|
||
(*_bfd_error_handler) (_(".glink and .plt too far apart"));
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return FALSE;
|
||
}
|
||
|
||
if (htab->emit_stub_syms)
|
||
{
|
||
struct elf_link_hash_entry *h;
|
||
h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
|
||
if (h == NULL)
|
||
return FALSE;
|
||
if (h->root.type == bfd_link_hash_new)
|
||
{
|
||
h->root.type = bfd_link_hash_defined;
|
||
h->root.u.def.section = htab->glink;
|
||
h->root.u.def.value = 0;
|
||
h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR
|
||
| ELF_LINK_HASH_DEF_REGULAR
|
||
| ELF_LINK_HASH_REF_REGULAR_NONWEAK
|
||
| ELF_LINK_FORCED_LOCAL);
|
||
}
|
||
}
|
||
p = htab->glink->contents;
|
||
bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
|
||
p += 4;
|
||
bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
|
||
p += 4;
|
||
bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
|
||
p += 4;
|
||
bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
|
||
p += 4;
|
||
bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
|
||
p += 4;
|
||
bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
|
||
p += 4;
|
||
bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
|
||
p += 4;
|
||
bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
|
||
p += 4;
|
||
bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
|
||
p += 4;
|
||
bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
|
||
p += 4;
|
||
bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
|
||
p += 4;
|
||
bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
|
||
p += 4;
|
||
bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
|
||
p += 4;
|
||
bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
|
||
p += 4;
|
||
bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
|
||
p += 4;
|
||
bfd_put_32 (htab->glink->owner, BCTR, p);
|
||
p += 4;
|
||
|
||
/* Build the .glink lazy link call stubs. */
|
||
indx = 0;
|
||
while (p < htab->glink->contents + htab->glink->size)
|
||
{
|
||
if (indx < 0x8000)
|
||
{
|
||
bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
|
||
p += 4;
|
||
}
|
||
else
|
||
{
|
||
bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
|
||
p += 4;
|
||
bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
|
||
p += 4;
|
||
}
|
||
bfd_put_32 (htab->glink->owner,
|
||
B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
|
||
indx++;
|
||
p += 4;
|
||
}
|
||
htab->glink->rawsize = p - htab->glink->contents;
|
||
}
|
||
|
||
if (htab->brlt->size != 0)
|
||
{
|
||
htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
|
||
htab->brlt->size);
|
||
if (htab->brlt->contents == NULL)
|
||
return FALSE;
|
||
}
|
||
if (info->shared && htab->relbrlt->size != 0)
|
||
{
|
||
htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
|
||
htab->relbrlt->size);
|
||
if (htab->relbrlt->contents == NULL)
|
||
return FALSE;
|
||
}
|
||
|
||
/* Build the stubs as directed by the stub hash table. */
|
||
bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
|
||
|
||
for (stub_sec = htab->stub_bfd->sections;
|
||
stub_sec != NULL;
|
||
stub_sec = stub_sec->next)
|
||
if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
|
||
{
|
||
stub_sec_count += 1;
|
||
if (stub_sec->rawsize != stub_sec->size)
|
||
break;
|
||
}
|
||
|
||
if (stub_sec != NULL
|
||
|| htab->glink->rawsize != htab->glink->size)
|
||
{
|
||
htab->stub_error = TRUE;
|
||
(*_bfd_error_handler) (_("stubs don't match calculated size"));
|
||
}
|
||
|
||
if (htab->stub_error)
|
||
return FALSE;
|
||
|
||
if (stats != NULL)
|
||
{
|
||
*stats = bfd_malloc (500);
|
||
if (*stats == NULL)
|
||
return FALSE;
|
||
|
||
sprintf (*stats, _("linker stubs in %u groups\n"
|
||
" branch %lu\n"
|
||
" toc adjust %lu\n"
|
||
" long branch %lu\n"
|
||
" long toc adj %lu\n"
|
||
" plt call %lu"),
|
||
stub_sec_count,
|
||
htab->stub_count[ppc_stub_long_branch - 1],
|
||
htab->stub_count[ppc_stub_long_branch_r2off - 1],
|
||
htab->stub_count[ppc_stub_plt_branch - 1],
|
||
htab->stub_count[ppc_stub_plt_branch_r2off - 1],
|
||
htab->stub_count[ppc_stub_plt_call - 1]);
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/* The RELOCATE_SECTION function is called by the ELF backend linker
|
||
to handle the relocations for a section.
|
||
|
||
The relocs are always passed as Rela structures; if the section
|
||
actually uses Rel structures, the r_addend field will always be
|
||
zero.
|
||
|
||
This function is responsible for adjust the section contents as
|
||
necessary, and (if using Rela relocs and generating a
|
||
relocatable output file) adjusting the reloc addend as
|
||
necessary.
|
||
|
||
This function does not have to worry about setting the reloc
|
||
address or the reloc symbol index.
|
||
|
||
LOCAL_SYMS is a pointer to the swapped in local symbols.
|
||
|
||
LOCAL_SECTIONS is an array giving the section in the input file
|
||
corresponding to the st_shndx field of each local symbol.
|
||
|
||
The global hash table entry for the global symbols can be found
|
||
via elf_sym_hashes (input_bfd).
|
||
|
||
When generating relocatable output, this function must handle
|
||
STB_LOCAL/STT_SECTION symbols specially. The output symbol is
|
||
going to be the section symbol corresponding to the output
|
||
section, which means that the addend must be adjusted
|
||
accordingly. */
|
||
|
||
static bfd_boolean
|
||
ppc64_elf_relocate_section (bfd *output_bfd,
|
||
struct bfd_link_info *info,
|
||
bfd *input_bfd,
|
||
asection *input_section,
|
||
bfd_byte *contents,
|
||
Elf_Internal_Rela *relocs,
|
||
Elf_Internal_Sym *local_syms,
|
||
asection **local_sections)
|
||
{
|
||
struct ppc_link_hash_table *htab;
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
struct elf_link_hash_entry **sym_hashes;
|
||
Elf_Internal_Rela *rel;
|
||
Elf_Internal_Rela *relend;
|
||
Elf_Internal_Rela outrel;
|
||
bfd_byte *loc;
|
||
struct got_entry **local_got_ents;
|
||
bfd_vma TOCstart;
|
||
bfd_boolean ret = TRUE;
|
||
bfd_boolean is_opd;
|
||
/* Disabled until we sort out how ld should choose 'y' vs 'at'. */
|
||
bfd_boolean is_power4 = FALSE;
|
||
|
||
if (info->relocatable)
|
||
return TRUE;
|
||
|
||
/* Initialize howto table if needed. */
|
||
if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
|
||
ppc_howto_init ();
|
||
|
||
htab = ppc_hash_table (info);
|
||
local_got_ents = elf_local_got_ents (input_bfd);
|
||
TOCstart = elf_gp (output_bfd);
|
||
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
||
sym_hashes = elf_sym_hashes (input_bfd);
|
||
is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
|
||
|
||
rel = relocs;
|
||
relend = relocs + input_section->reloc_count;
|
||
for (; rel < relend; rel++)
|
||
{
|
||
enum elf_ppc64_reloc_type r_type;
|
||
bfd_vma addend;
|
||
bfd_reloc_status_type r;
|
||
Elf_Internal_Sym *sym;
|
||
asection *sec;
|
||
struct elf_link_hash_entry *h;
|
||
struct elf_link_hash_entry *fdh;
|
||
const char *sym_name;
|
||
unsigned long r_symndx, toc_symndx;
|
||
char tls_mask, tls_gd, tls_type;
|
||
char sym_type;
|
||
bfd_vma relocation;
|
||
bfd_boolean unresolved_reloc;
|
||
bfd_boolean warned;
|
||
unsigned long insn, mask;
|
||
struct ppc_stub_hash_entry *stub_entry;
|
||
bfd_vma max_br_offset;
|
||
bfd_vma from;
|
||
|
||
r_type = ELF64_R_TYPE (rel->r_info);
|
||
r_symndx = ELF64_R_SYM (rel->r_info);
|
||
|
||
/* For old style R_PPC64_TOC relocs with a zero symbol, use the
|
||
symbol of the previous ADDR64 reloc. The symbol gives us the
|
||
proper TOC base to use. */
|
||
if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
|
||
&& rel != relocs
|
||
&& ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
|
||
&& is_opd)
|
||
r_symndx = ELF64_R_SYM (rel[-1].r_info);
|
||
|
||
sym = NULL;
|
||
sec = NULL;
|
||
h = NULL;
|
||
sym_name = NULL;
|
||
unresolved_reloc = FALSE;
|
||
warned = FALSE;
|
||
|
||
if (r_symndx < symtab_hdr->sh_info)
|
||
{
|
||
/* It's a local symbol. */
|
||
sym = local_syms + r_symndx;
|
||
sec = local_sections[r_symndx];
|
||
sym_name = bfd_elf_local_sym_name (input_bfd, sym);
|
||
sym_type = ELF64_ST_TYPE (sym->st_info);
|
||
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
|
||
if (elf_section_data (sec) != NULL)
|
||
{
|
||
long *opd_sym_adjust;
|
||
|
||
opd_sym_adjust = ppc64_elf_section_data (sec)->opd.adjust;
|
||
if (opd_sym_adjust != NULL)
|
||
relocation += opd_sym_adjust[sym->st_value / 24];
|
||
}
|
||
}
|
||
else
|
||
{
|
||
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
|
||
r_symndx, symtab_hdr, sym_hashes,
|
||
h, sec, relocation,
|
||
unresolved_reloc, warned);
|
||
sym_name = h->root.root.string;
|
||
sym_type = h->type;
|
||
}
|
||
|
||
/* TLS optimizations. Replace instruction sequences and relocs
|
||
based on information we collected in tls_optimize. We edit
|
||
RELOCS so that --emit-relocs will output something sensible
|
||
for the final instruction stream. */
|
||
tls_mask = 0;
|
||
tls_gd = 0;
|
||
toc_symndx = 0;
|
||
if (IS_PPC64_TLS_RELOC (r_type))
|
||
{
|
||
if (h != NULL)
|
||
tls_mask = ((struct ppc_link_hash_entry *) h)->tls_mask;
|
||
else if (local_got_ents != NULL)
|
||
{
|
||
char *lgot_masks;
|
||
lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
|
||
tls_mask = lgot_masks[r_symndx];
|
||
}
|
||
if (tls_mask == 0 && r_type == R_PPC64_TLS)
|
||
{
|
||
/* Check for toc tls entries. */
|
||
char *toc_tls;
|
||
|
||
if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
|
||
rel, input_bfd))
|
||
return FALSE;
|
||
|
||
if (toc_tls)
|
||
tls_mask = *toc_tls;
|
||
}
|
||
}
|
||
|
||
/* Check that tls relocs are used with tls syms, and non-tls
|
||
relocs are used with non-tls syms. */
|
||
if (r_symndx != 0
|
||
&& r_type != R_PPC64_NONE
|
||
&& (h == NULL
|
||
|| h->root.type == bfd_link_hash_defined
|
||
|| h->root.type == bfd_link_hash_defweak)
|
||
&& IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
|
||
{
|
||
if (r_type == R_PPC64_TLS && tls_mask != 0)
|
||
/* R_PPC64_TLS is OK against a symbol in the TOC. */
|
||
;
|
||
else
|
||
(*_bfd_error_handler)
|
||
(sym_type == STT_TLS
|
||
? _("%s(%s+0x%lx): %s used with TLS symbol %s")
|
||
: _("%s(%s+0x%lx): %s used with non-TLS symbol %s"),
|
||
bfd_archive_filename (input_bfd),
|
||
input_section->name,
|
||
(long) rel->r_offset,
|
||
ppc64_elf_howto_table[r_type]->name,
|
||
sym_name);
|
||
}
|
||
|
||
/* Ensure reloc mapping code below stays sane. */
|
||
if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
|
||
|| R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
|
||
|| (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
|
||
|| (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
|
||
|| (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
|
||
|| (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
|
||
|| (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
|
||
|| (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
|
||
|| (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
|
||
|| (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
|
||
abort ();
|
||
|
||
switch (r_type)
|
||
{
|
||
default:
|
||
break;
|
||
|
||
case R_PPC64_TOC16:
|
||
case R_PPC64_TOC16_LO:
|
||
case R_PPC64_TOC16_DS:
|
||
case R_PPC64_TOC16_LO_DS:
|
||
{
|
||
/* Check for toc tls entries. */
|
||
char *toc_tls;
|
||
int retval;
|
||
|
||
retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
|
||
rel, input_bfd);
|
||
if (retval == 0)
|
||
return FALSE;
|
||
|
||
if (toc_tls)
|
||
{
|
||
tls_mask = *toc_tls;
|
||
if (r_type == R_PPC64_TOC16_DS
|
||
|| r_type == R_PPC64_TOC16_LO_DS)
|
||
{
|
||
if (tls_mask != 0
|
||
&& (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
|
||
goto toctprel;
|
||
}
|
||
else
|
||
{
|
||
/* If we found a GD reloc pair, then we might be
|
||
doing a GD->IE transition. */
|
||
if (retval == 2)
|
||
{
|
||
tls_gd = TLS_TPRELGD;
|
||
if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
|
||
goto tls_get_addr_check;
|
||
}
|
||
else if (retval == 3)
|
||
{
|
||
if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
|
||
goto tls_get_addr_check;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
|
||
case R_PPC64_GOT_TPREL16_DS:
|
||
case R_PPC64_GOT_TPREL16_LO_DS:
|
||
if (tls_mask != 0
|
||
&& (tls_mask & TLS_TPREL) == 0)
|
||
{
|
||
toctprel:
|
||
insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
|
||
insn &= 31 << 21;
|
||
insn |= 0x3c0d0000; /* addis 0,13,0 */
|
||
bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
|
||
r_type = R_PPC64_TPREL16_HA;
|
||
if (toc_symndx != 0)
|
||
{
|
||
rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
|
||
/* We changed the symbol. Start over in order to
|
||
get h, sym, sec etc. right. */
|
||
rel--;
|
||
continue;
|
||
}
|
||
else
|
||
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
|
||
}
|
||
break;
|
||
|
||
case R_PPC64_TLS:
|
||
if (tls_mask != 0
|
||
&& (tls_mask & TLS_TPREL) == 0)
|
||
{
|
||
bfd_vma rtra;
|
||
insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
|
||
if ((insn & ((0x3f << 26) | (31 << 11)))
|
||
== ((31 << 26) | (13 << 11)))
|
||
rtra = insn & ((1 << 26) - (1 << 16));
|
||
else if ((insn & ((0x3f << 26) | (31 << 16)))
|
||
== ((31 << 26) | (13 << 16)))
|
||
rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
|
||
else
|
||
abort ();
|
||
if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
|
||
/* add -> addi. */
|
||
insn = 14 << 26;
|
||
else if ((insn & (31 << 1)) == 23 << 1
|
||
&& ((insn & (31 << 6)) < 14 << 6
|
||
|| ((insn & (31 << 6)) >= 16 << 6
|
||
&& (insn & (31 << 6)) < 24 << 6)))
|
||
/* load and store indexed -> dform. */
|
||
insn = (32 | ((insn >> 6) & 31)) << 26;
|
||
else if ((insn & (31 << 1)) == 21 << 1
|
||
&& (insn & (0x1a << 6)) == 0)
|
||
/* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
|
||
insn = (((58 | ((insn >> 6) & 4)) << 26)
|
||
| ((insn >> 6) & 1));
|
||
else if ((insn & (31 << 1)) == 21 << 1
|
||
&& (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
|
||
/* lwax -> lwa. */
|
||
insn = (58 << 26) | 2;
|
||
else
|
||
abort ();
|
||
insn |= rtra;
|
||
bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
|
||
/* Was PPC64_TLS which sits on insn boundary, now
|
||
PPC64_TPREL16_LO which is at insn+2. */
|
||
rel->r_offset += 2;
|
||
r_type = R_PPC64_TPREL16_LO;
|
||
if (toc_symndx != 0)
|
||
{
|
||
rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
|
||
/* We changed the symbol. Start over in order to
|
||
get h, sym, sec etc. right. */
|
||
rel--;
|
||
continue;
|
||
}
|
||
else
|
||
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
|
||
}
|
||
break;
|
||
|
||
case R_PPC64_GOT_TLSGD16_HI:
|
||
case R_PPC64_GOT_TLSGD16_HA:
|
||
tls_gd = TLS_TPRELGD;
|
||
if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
|
||
goto tls_gdld_hi;
|
||
break;
|
||
|
||
case R_PPC64_GOT_TLSLD16_HI:
|
||
case R_PPC64_GOT_TLSLD16_HA:
|
||
if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
|
||
{
|
||
tls_gdld_hi:
|
||
if ((tls_mask & tls_gd) != 0)
|
||
r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
|
||
+ R_PPC64_GOT_TPREL16_DS);
|
||
else
|
||
{
|
||
bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
|
||
rel->r_offset -= 2;
|
||
r_type = R_PPC64_NONE;
|
||
}
|
||
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
|
||
}
|
||
break;
|
||
|
||
case R_PPC64_GOT_TLSGD16:
|
||
case R_PPC64_GOT_TLSGD16_LO:
|
||
tls_gd = TLS_TPRELGD;
|
||
if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
|
||
goto tls_get_addr_check;
|
||
break;
|
||
|
||
case R_PPC64_GOT_TLSLD16:
|
||
case R_PPC64_GOT_TLSLD16_LO:
|
||
if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
|
||
{
|
||
tls_get_addr_check:
|
||
if (rel + 1 < relend)
|
||
{
|
||
enum elf_ppc64_reloc_type r_type2;
|
||
unsigned long r_symndx2;
|
||
struct elf_link_hash_entry *h2;
|
||
bfd_vma insn1, insn2, insn3;
|
||
bfd_vma offset;
|
||
|
||
/* The next instruction should be a call to
|
||
__tls_get_addr. Peek at the reloc to be sure. */
|
||
r_type2 = ELF64_R_TYPE (rel[1].r_info);
|
||
r_symndx2 = ELF64_R_SYM (rel[1].r_info);
|
||
if (r_symndx2 < symtab_hdr->sh_info
|
||
|| (r_type2 != R_PPC64_REL14
|
||
&& r_type2 != R_PPC64_REL14_BRTAKEN
|
||
&& r_type2 != R_PPC64_REL14_BRNTAKEN
|
||
&& r_type2 != R_PPC64_REL24))
|
||
break;
|
||
|
||
h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
|
||
while (h2->root.type == bfd_link_hash_indirect
|
||
|| h2->root.type == bfd_link_hash_warning)
|
||
h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
|
||
if (h2 == NULL || h2 != htab->tls_get_addr)
|
||
break;
|
||
|
||
/* OK, it checks out. Replace the call. */
|
||
offset = rel[1].r_offset;
|
||
insn1 = bfd_get_32 (output_bfd,
|
||
contents + rel->r_offset - 2);
|
||
insn3 = bfd_get_32 (output_bfd,
|
||
contents + offset + 4);
|
||
if ((tls_mask & tls_gd) != 0)
|
||
{
|
||
/* IE */
|
||
insn1 &= (1 << 26) - (1 << 2);
|
||
insn1 |= 58 << 26; /* ld */
|
||
insn2 = 0x7c636a14; /* add 3,3,13 */
|
||
rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
|
||
if ((tls_mask & TLS_EXPLICIT) == 0)
|
||
r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
|
||
+ R_PPC64_GOT_TPREL16_DS);
|
||
else
|
||
r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
|
||
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
|
||
}
|
||
else
|
||
{
|
||
/* LE */
|
||
insn1 = 0x3c6d0000; /* addis 3,13,0 */
|
||
insn2 = 0x38630000; /* addi 3,3,0 */
|
||
if (tls_gd == 0)
|
||
{
|
||
/* Was an LD reloc. */
|
||
r_symndx = 0;
|
||
rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
|
||
rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
|
||
}
|
||
else if (toc_symndx != 0)
|
||
r_symndx = toc_symndx;
|
||
r_type = R_PPC64_TPREL16_HA;
|
||
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
|
||
rel[1].r_info = ELF64_R_INFO (r_symndx,
|
||
R_PPC64_TPREL16_LO);
|
||
rel[1].r_offset += 2;
|
||
}
|
||
if (insn3 == NOP
|
||
|| insn3 == CROR_151515 || insn3 == CROR_313131)
|
||
{
|
||
insn3 = insn2;
|
||
insn2 = NOP;
|
||
rel[1].r_offset += 4;
|
||
}
|
||
bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
|
||
bfd_put_32 (output_bfd, insn2, contents + offset);
|
||
bfd_put_32 (output_bfd, insn3, contents + offset + 4);
|
||
if (tls_gd == 0 || toc_symndx != 0)
|
||
{
|
||
/* We changed the symbol. Start over in order
|
||
to get h, sym, sec etc. right. */
|
||
rel--;
|
||
continue;
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
|
||
case R_PPC64_DTPMOD64:
|
||
if (rel + 1 < relend
|
||
&& rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
|
||
&& rel[1].r_offset == rel->r_offset + 8)
|
||
{
|
||
if ((tls_mask & TLS_GD) == 0)
|
||
{
|
||
rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
|
||
if ((tls_mask & TLS_TPRELGD) != 0)
|
||
r_type = R_PPC64_TPREL64;
|
||
else
|
||
{
|
||
bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
|
||
r_type = R_PPC64_NONE;
|
||
}
|
||
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if ((tls_mask & TLS_LD) == 0)
|
||
{
|
||
bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
|
||
r_type = R_PPC64_NONE;
|
||
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
|
||
}
|
||
}
|
||
break;
|
||
|
||
case R_PPC64_TPREL64:
|
||
if ((tls_mask & TLS_TPREL) == 0)
|
||
{
|
||
r_type = R_PPC64_NONE;
|
||
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
|
||
}
|
||
break;
|
||
}
|
||
|
||
/* Handle other relocations that tweak non-addend part of insn. */
|
||
insn = 0;
|
||
switch (r_type)
|
||
{
|
||
default:
|
||
break;
|
||
|
||
/* Branch taken prediction relocations. */
|
||
case R_PPC64_ADDR14_BRTAKEN:
|
||
case R_PPC64_REL14_BRTAKEN:
|
||
insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
|
||
/* Fall thru. */
|
||
|
||
/* Branch not taken prediction relocations. */
|
||
case R_PPC64_ADDR14_BRNTAKEN:
|
||
case R_PPC64_REL14_BRNTAKEN:
|
||
insn |= bfd_get_32 (output_bfd,
|
||
contents + rel->r_offset) & ~(0x01 << 21);
|
||
if (is_power4)
|
||
{
|
||
/* Set 'a' bit. This is 0b00010 in BO field for branch
|
||
on CR(BI) insns (BO == 001at or 011at), and 0b01000
|
||
for branch on CTR insns (BO == 1a00t or 1a01t). */
|
||
if ((insn & (0x14 << 21)) == (0x04 << 21))
|
||
insn |= 0x02 << 21;
|
||
else if ((insn & (0x14 << 21)) == (0x10 << 21))
|
||
insn |= 0x08 << 21;
|
||
else
|
||
break;
|
||
}
|
||
else
|
||
{
|
||
from = (rel->r_offset
|
||
+ input_section->output_offset
|
||
+ input_section->output_section->vma);
|
||
|
||
/* Invert 'y' bit if not the default. */
|
||
if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
|
||
insn ^= 0x01 << 21;
|
||
}
|
||
|
||
bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
|
||
break;
|
||
|
||
case R_PPC64_REL24:
|
||
/* Calls to functions with a different TOC, such as calls to
|
||
shared objects, need to alter the TOC pointer. This is
|
||
done using a linkage stub. A REL24 branching to these
|
||
linkage stubs needs to be followed by a nop, as the nop
|
||
will be replaced with an instruction to restore the TOC
|
||
base pointer. */
|
||
if (((h != NULL
|
||
&& (fdh = ((struct ppc_link_hash_entry *) h)->oh) != NULL
|
||
&& fdh->plt.plist != NULL)
|
||
|| ((fdh = h, sec) != NULL
|
||
&& sec->output_section != NULL
|
||
&& (htab->stub_group[sec->id].toc_off
|
||
!= htab->stub_group[input_section->id].toc_off)))
|
||
&& (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
|
||
rel, htab)) != NULL
|
||
&& (stub_entry->stub_type == ppc_stub_plt_call
|
||
|| stub_entry->stub_type == ppc_stub_plt_branch_r2off
|
||
|| stub_entry->stub_type == ppc_stub_long_branch_r2off))
|
||
{
|
||
bfd_boolean can_plt_call = 0;
|
||
|
||
if (rel->r_offset + 8 <= input_section->size)
|
||
{
|
||
insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
|
||
if (insn == NOP
|
||
|| insn == CROR_151515 || insn == CROR_313131)
|
||
{
|
||
bfd_put_32 (input_bfd, LD_R2_40R1,
|
||
contents + rel->r_offset + 4);
|
||
can_plt_call = 1;
|
||
}
|
||
}
|
||
|
||
if (!can_plt_call)
|
||
{
|
||
if (stub_entry->stub_type == ppc_stub_plt_call)
|
||
{
|
||
/* If this is a plain branch rather than a branch
|
||
and link, don't require a nop. */
|
||
insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
|
||
if ((insn & 1) == 0)
|
||
can_plt_call = 1;
|
||
}
|
||
else if (h != NULL
|
||
&& strcmp (h->root.root.string,
|
||
".__libc_start_main") == 0)
|
||
{
|
||
/* Allow crt1 branch to go via a toc adjusting stub. */
|
||
can_plt_call = 1;
|
||
}
|
||
else
|
||
{
|
||
if (strcmp (input_section->output_section->name,
|
||
".init") == 0
|
||
|| strcmp (input_section->output_section->name,
|
||
".fini") == 0)
|
||
(*_bfd_error_handler)
|
||
(_("%s(%s+0x%lx): automatic multiple TOCs "
|
||
"not supported using your crt files; "
|
||
"recompile with -mminimal-toc or upgrade gcc"),
|
||
bfd_archive_filename (input_bfd),
|
||
input_section->name,
|
||
(long) rel->r_offset);
|
||
else
|
||
(*_bfd_error_handler)
|
||
(_("%s(%s+0x%lx): sibling call optimization to `%s' "
|
||
"does not allow automatic multiple TOCs; "
|
||
"recompile with -mminimal-toc or "
|
||
"-fno-optimize-sibling-calls, "
|
||
"or make `%s' extern"),
|
||
bfd_archive_filename (input_bfd),
|
||
input_section->name,
|
||
(long) rel->r_offset,
|
||
sym_name,
|
||
sym_name);
|
||
bfd_set_error (bfd_error_bad_value);
|
||
ret = FALSE;
|
||
}
|
||
}
|
||
|
||
if (can_plt_call)
|
||
{
|
||
relocation = (stub_entry->stub_offset
|
||
+ stub_entry->stub_sec->output_offset
|
||
+ stub_entry->stub_sec->output_section->vma);
|
||
if (stub_entry->stub_type == ppc_stub_plt_call)
|
||
unresolved_reloc = FALSE;
|
||
}
|
||
}
|
||
|
||
if (h != NULL
|
||
&& h->root.type == bfd_link_hash_undefweak
|
||
&& relocation == 0
|
||
&& rel->r_addend == 0)
|
||
{
|
||
/* Tweak calls to undefined weak functions to point at a
|
||
blr. We can thus call a weak function without first
|
||
checking whether the function is defined. We have a
|
||
blr at the end of .sfpr. */
|
||
BFD_ASSERT (htab->sfpr->size != 0);
|
||
relocation = (htab->sfpr->size - 4
|
||
+ htab->sfpr->output_offset
|
||
+ htab->sfpr->output_section->vma);
|
||
from = (rel->r_offset
|
||
+ input_section->output_offset
|
||
+ input_section->output_section->vma);
|
||
|
||
/* But let's not be silly about it. If the blr isn't in
|
||
reach, just go to the next instruction. */
|
||
if (relocation - from + (1 << 25) >= (1 << 26)
|
||
|| htab->sfpr->size == 0)
|
||
relocation = from + 4;
|
||
}
|
||
break;
|
||
}
|
||
|
||
/* Set `addend'. */
|
||
tls_type = 0;
|
||
addend = rel->r_addend;
|
||
switch (r_type)
|
||
{
|
||
default:
|
||
(*_bfd_error_handler)
|
||
(_("%s: unknown relocation type %d for symbol %s"),
|
||
bfd_archive_filename (input_bfd), (int) r_type, sym_name);
|
||
|
||
bfd_set_error (bfd_error_bad_value);
|
||
ret = FALSE;
|
||
continue;
|
||
|
||
case R_PPC64_NONE:
|
||
case R_PPC64_TLS:
|
||
case R_PPC64_GNU_VTINHERIT:
|
||
case R_PPC64_GNU_VTENTRY:
|
||
continue;
|
||
|
||
/* GOT16 relocations. Like an ADDR16 using the symbol's
|
||
address in the GOT as relocation value instead of the
|
||
symbol's value itself. Also, create a GOT entry for the
|
||
symbol and put the symbol value there. */
|
||
case R_PPC64_GOT_TLSGD16:
|
||
case R_PPC64_GOT_TLSGD16_LO:
|
||
case R_PPC64_GOT_TLSGD16_HI:
|
||
case R_PPC64_GOT_TLSGD16_HA:
|
||
tls_type = TLS_TLS | TLS_GD;
|
||
goto dogot;
|
||
|
||
case R_PPC64_GOT_TLSLD16:
|
||
case R_PPC64_GOT_TLSLD16_LO:
|
||
case R_PPC64_GOT_TLSLD16_HI:
|
||
case R_PPC64_GOT_TLSLD16_HA:
|
||
tls_type = TLS_TLS | TLS_LD;
|
||
goto dogot;
|
||
|
||
case R_PPC64_GOT_TPREL16_DS:
|
||
case R_PPC64_GOT_TPREL16_LO_DS:
|
||
case R_PPC64_GOT_TPREL16_HI:
|
||
case R_PPC64_GOT_TPREL16_HA:
|
||
tls_type = TLS_TLS | TLS_TPREL;
|
||
goto dogot;
|
||
|
||
case R_PPC64_GOT_DTPREL16_DS:
|
||
case R_PPC64_GOT_DTPREL16_LO_DS:
|
||
case R_PPC64_GOT_DTPREL16_HI:
|
||
case R_PPC64_GOT_DTPREL16_HA:
|
||
tls_type = TLS_TLS | TLS_DTPREL;
|
||
goto dogot;
|
||
|
||
case R_PPC64_GOT16:
|
||
case R_PPC64_GOT16_LO:
|
||
case R_PPC64_GOT16_HI:
|
||
case R_PPC64_GOT16_HA:
|
||
case R_PPC64_GOT16_DS:
|
||
case R_PPC64_GOT16_LO_DS:
|
||
dogot:
|
||
{
|
||
/* Relocation is to the entry for this symbol in the global
|
||
offset table. */
|
||
asection *got;
|
||
bfd_vma *offp;
|
||
bfd_vma off;
|
||
unsigned long indx = 0;
|
||
|
||
if (tls_type == (TLS_TLS | TLS_LD)
|
||
&& (h == NULL
|
||
|| !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
|
||
offp = &ppc64_tlsld_got (input_bfd)->offset;
|
||
else
|
||
{
|
||
struct got_entry *ent;
|
||
|
||
if (h != NULL)
|
||
{
|
||
bfd_boolean dyn = htab->elf.dynamic_sections_created;
|
||
if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
|
||
|| (info->shared
|
||
&& SYMBOL_REFERENCES_LOCAL (info, h)))
|
||
/* This is actually a static link, or it is a
|
||
-Bsymbolic link and the symbol is defined
|
||
locally, or the symbol was forced to be local
|
||
because of a version file. */
|
||
;
|
||
else
|
||
{
|
||
indx = h->dynindx;
|
||
unresolved_reloc = FALSE;
|
||
}
|
||
ent = h->got.glist;
|
||
}
|
||
else
|
||
{
|
||
if (local_got_ents == NULL)
|
||
abort ();
|
||
ent = local_got_ents[r_symndx];
|
||
}
|
||
|
||
for (; ent != NULL; ent = ent->next)
|
||
if (ent->addend == rel->r_addend
|
||
&& ent->owner == input_bfd
|
||
&& ent->tls_type == tls_type)
|
||
break;
|
||
if (ent == NULL)
|
||
abort ();
|
||
offp = &ent->got.offset;
|
||
}
|
||
|
||
got = ppc64_elf_tdata (input_bfd)->got;
|
||
if (got == NULL)
|
||
abort ();
|
||
|
||
/* The offset must always be a multiple of 8. We use the
|
||
least significant bit to record whether we have already
|
||
processed this entry. */
|
||
off = *offp;
|
||
if ((off & 1) != 0)
|
||
off &= ~1;
|
||
else
|
||
{
|
||
/* Generate relocs for the dynamic linker, except in
|
||
the case of TLSLD where we'll use one entry per
|
||
module. */
|
||
asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
|
||
|
||
*offp = off | 1;
|
||
if ((info->shared || indx != 0)
|
||
&& (h == NULL
|
||
|| ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|
||
|| h->root.type != bfd_link_hash_undefweak))
|
||
{
|
||
outrel.r_offset = (got->output_section->vma
|
||
+ got->output_offset
|
||
+ off);
|
||
outrel.r_addend = rel->r_addend;
|
||
if (tls_type & (TLS_LD | TLS_GD))
|
||
{
|
||
outrel.r_addend = 0;
|
||
outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
|
||
if (tls_type == (TLS_TLS | TLS_GD))
|
||
{
|
||
loc = relgot->contents;
|
||
loc += (relgot->reloc_count++
|
||
* sizeof (Elf64_External_Rela));
|
||
bfd_elf64_swap_reloca_out (output_bfd,
|
||
&outrel, loc);
|
||
outrel.r_offset += 8;
|
||
outrel.r_addend = rel->r_addend;
|
||
outrel.r_info
|
||
= ELF64_R_INFO (indx, R_PPC64_DTPREL64);
|
||
}
|
||
}
|
||
else if (tls_type == (TLS_TLS | TLS_DTPREL))
|
||
outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
|
||
else if (tls_type == (TLS_TLS | TLS_TPREL))
|
||
outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
|
||
else if (indx == 0)
|
||
{
|
||
outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
|
||
|
||
/* Write the .got section contents for the sake
|
||
of prelink. */
|
||
loc = got->contents + off;
|
||
bfd_put_64 (output_bfd, outrel.r_addend + relocation,
|
||
loc);
|
||
}
|
||
else
|
||
outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
|
||
|
||
if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
|
||
{
|
||
outrel.r_addend += relocation;
|
||
if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
|
||
outrel.r_addend -= htab->elf.tls_sec->vma;
|
||
}
|
||
loc = relgot->contents;
|
||
loc += (relgot->reloc_count++
|
||
* sizeof (Elf64_External_Rela));
|
||
bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
|
||
}
|
||
|
||
/* Init the .got section contents here if we're not
|
||
emitting a reloc. */
|
||
else
|
||
{
|
||
relocation += rel->r_addend;
|
||
if (tls_type == (TLS_TLS | TLS_LD))
|
||
relocation = 1;
|
||
else if (tls_type != 0)
|
||
{
|
||
relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
|
||
if (tls_type == (TLS_TLS | TLS_TPREL))
|
||
relocation += DTP_OFFSET - TP_OFFSET;
|
||
|
||
if (tls_type == (TLS_TLS | TLS_GD))
|
||
{
|
||
bfd_put_64 (output_bfd, relocation,
|
||
got->contents + off + 8);
|
||
relocation = 1;
|
||
}
|
||
}
|
||
|
||
bfd_put_64 (output_bfd, relocation,
|
||
got->contents + off);
|
||
}
|
||
}
|
||
|
||
if (off >= (bfd_vma) -2)
|
||
abort ();
|
||
|
||
relocation = got->output_offset + off;
|
||
|
||
/* TOC base (r2) is TOC start plus 0x8000. */
|
||
addend = -TOC_BASE_OFF;
|
||
}
|
||
break;
|
||
|
||
case R_PPC64_PLT16_HA:
|
||
case R_PPC64_PLT16_HI:
|
||
case R_PPC64_PLT16_LO:
|
||
case R_PPC64_PLT32:
|
||
case R_PPC64_PLT64:
|
||
/* Relocation is to the entry for this symbol in the
|
||
procedure linkage table. */
|
||
|
||
/* Resolve a PLT reloc against a local symbol directly,
|
||
without using the procedure linkage table. */
|
||
if (h == NULL)
|
||
break;
|
||
|
||
/* It's possible that we didn't make a PLT entry for this
|
||
symbol. This happens when statically linking PIC code,
|
||
or when using -Bsymbolic. Go find a match if there is a
|
||
PLT entry. */
|
||
if (htab->plt != NULL)
|
||
{
|
||
struct plt_entry *ent;
|
||
for (ent = h->plt.plist; ent != NULL; ent = ent->next)
|
||
if (ent->addend == rel->r_addend
|
||
&& ent->plt.offset != (bfd_vma) -1)
|
||
{
|
||
relocation = (htab->plt->output_section->vma
|
||
+ htab->plt->output_offset
|
||
+ ent->plt.offset);
|
||
unresolved_reloc = FALSE;
|
||
}
|
||
}
|
||
break;
|
||
|
||
case R_PPC64_TOC:
|
||
/* Relocation value is TOC base. */
|
||
relocation = TOCstart;
|
||
if (r_symndx == 0)
|
||
relocation += htab->stub_group[input_section->id].toc_off;
|
||
else if (unresolved_reloc)
|
||
;
|
||
else if (sec != NULL && sec->id <= htab->top_id)
|
||
relocation += htab->stub_group[sec->id].toc_off;
|
||
else
|
||
unresolved_reloc = TRUE;
|
||
goto dodyn2;
|
||
|
||
/* TOC16 relocs. We want the offset relative to the TOC base,
|
||
which is the address of the start of the TOC plus 0x8000.
|
||
The TOC consists of sections .got, .toc, .tocbss, and .plt,
|
||
in this order. */
|
||
case R_PPC64_TOC16:
|
||
case R_PPC64_TOC16_LO:
|
||
case R_PPC64_TOC16_HI:
|
||
case R_PPC64_TOC16_DS:
|
||
case R_PPC64_TOC16_LO_DS:
|
||
case R_PPC64_TOC16_HA:
|
||
addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
|
||
break;
|
||
|
||
/* Relocate against the beginning of the section. */
|
||
case R_PPC64_SECTOFF:
|
||
case R_PPC64_SECTOFF_LO:
|
||
case R_PPC64_SECTOFF_HI:
|
||
case R_PPC64_SECTOFF_DS:
|
||
case R_PPC64_SECTOFF_LO_DS:
|
||
case R_PPC64_SECTOFF_HA:
|
||
if (sec != NULL)
|
||
addend -= sec->output_section->vma;
|
||
break;
|
||
|
||
case R_PPC64_REL14:
|
||
case R_PPC64_REL14_BRNTAKEN:
|
||
case R_PPC64_REL14_BRTAKEN:
|
||
case R_PPC64_REL24:
|
||
break;
|
||
|
||
case R_PPC64_TPREL16:
|
||
case R_PPC64_TPREL16_LO:
|
||
case R_PPC64_TPREL16_HI:
|
||
case R_PPC64_TPREL16_HA:
|
||
case R_PPC64_TPREL16_DS:
|
||
case R_PPC64_TPREL16_LO_DS:
|
||
case R_PPC64_TPREL16_HIGHER:
|
||
case R_PPC64_TPREL16_HIGHERA:
|
||
case R_PPC64_TPREL16_HIGHEST:
|
||
case R_PPC64_TPREL16_HIGHESTA:
|
||
addend -= htab->elf.tls_sec->vma + TP_OFFSET;
|
||
if (info->shared)
|
||
/* The TPREL16 relocs shouldn't really be used in shared
|
||
libs as they will result in DT_TEXTREL being set, but
|
||
support them anyway. */
|
||
goto dodyn;
|
||
break;
|
||
|
||
case R_PPC64_DTPREL16:
|
||
case R_PPC64_DTPREL16_LO:
|
||
case R_PPC64_DTPREL16_HI:
|
||
case R_PPC64_DTPREL16_HA:
|
||
case R_PPC64_DTPREL16_DS:
|
||
case R_PPC64_DTPREL16_LO_DS:
|
||
case R_PPC64_DTPREL16_HIGHER:
|
||
case R_PPC64_DTPREL16_HIGHERA:
|
||
case R_PPC64_DTPREL16_HIGHEST:
|
||
case R_PPC64_DTPREL16_HIGHESTA:
|
||
addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
|
||
break;
|
||
|
||
case R_PPC64_DTPMOD64:
|
||
relocation = 1;
|
||
addend = 0;
|
||
goto dodyn;
|
||
|
||
case R_PPC64_TPREL64:
|
||
addend -= htab->elf.tls_sec->vma + TP_OFFSET;
|
||
goto dodyn;
|
||
|
||
case R_PPC64_DTPREL64:
|
||
addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
|
||
/* Fall thru */
|
||
|
||
/* Relocations that may need to be propagated if this is a
|
||
dynamic object. */
|
||
case R_PPC64_REL30:
|
||
case R_PPC64_REL32:
|
||
case R_PPC64_REL64:
|
||
case R_PPC64_ADDR14:
|
||
case R_PPC64_ADDR14_BRNTAKEN:
|
||
case R_PPC64_ADDR14_BRTAKEN:
|
||
case R_PPC64_ADDR16:
|
||
case R_PPC64_ADDR16_DS:
|
||
case R_PPC64_ADDR16_HA:
|
||
case R_PPC64_ADDR16_HI:
|
||
case R_PPC64_ADDR16_HIGHER:
|
||
case R_PPC64_ADDR16_HIGHERA:
|
||
case R_PPC64_ADDR16_HIGHEST:
|
||
case R_PPC64_ADDR16_HIGHESTA:
|
||
case R_PPC64_ADDR16_LO:
|
||
case R_PPC64_ADDR16_LO_DS:
|
||
case R_PPC64_ADDR24:
|
||
case R_PPC64_ADDR32:
|
||
case R_PPC64_ADDR64:
|
||
case R_PPC64_UADDR16:
|
||
case R_PPC64_UADDR32:
|
||
case R_PPC64_UADDR64:
|
||
/* r_symndx will be zero only for relocs against symbols
|
||
from removed linkonce sections, or sections discarded by
|
||
a linker script. */
|
||
dodyn:
|
||
if (r_symndx == 0)
|
||
break;
|
||
/* Fall thru. */
|
||
|
||
dodyn2:
|
||
if ((input_section->flags & SEC_ALLOC) == 0)
|
||
break;
|
||
|
||
if (NO_OPD_RELOCS && is_opd)
|
||
break;
|
||
|
||
if ((info->shared
|
||
&& (h == NULL
|
||
|| ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|
||
|| h->root.type != bfd_link_hash_undefweak)
|
||
&& (MUST_BE_DYN_RELOC (r_type)
|
||
|| !SYMBOL_CALLS_LOCAL (info, h)))
|
||
|| (ELIMINATE_COPY_RELOCS
|
||
&& !info->shared
|
||
&& h != NULL
|
||
&& h->dynindx != -1
|
||
&& (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
|
||
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
|
||
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0))
|
||
{
|
||
Elf_Internal_Rela outrel;
|
||
bfd_boolean skip, relocate;
|
||
asection *sreloc;
|
||
bfd_byte *loc;
|
||
bfd_vma out_off;
|
||
|
||
/* When generating a dynamic object, these relocations
|
||
are copied into the output file to be resolved at run
|
||
time. */
|
||
|
||
skip = FALSE;
|
||
relocate = FALSE;
|
||
|
||
out_off = _bfd_elf_section_offset (output_bfd, info,
|
||
input_section, rel->r_offset);
|
||
if (out_off == (bfd_vma) -1)
|
||
skip = TRUE;
|
||
else if (out_off == (bfd_vma) -2)
|
||
skip = TRUE, relocate = TRUE;
|
||
out_off += (input_section->output_section->vma
|
||
+ input_section->output_offset);
|
||
outrel.r_offset = out_off;
|
||
outrel.r_addend = rel->r_addend;
|
||
|
||
/* Optimize unaligned reloc use. */
|
||
if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
|
||
|| (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
|
||
r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
|
||
else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
|
||
|| (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
|
||
r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
|
||
else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
|
||
|| (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
|
||
r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
|
||
|
||
if (skip)
|
||
memset (&outrel, 0, sizeof outrel);
|
||
else if (!SYMBOL_REFERENCES_LOCAL (info, h)
|
||
&& !is_opd
|
||
&& r_type != R_PPC64_TOC)
|
||
outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
|
||
else
|
||
{
|
||
/* This symbol is local, or marked to become local,
|
||
or this is an opd section reloc which must point
|
||
at a local function. */
|
||
outrel.r_addend += relocation;
|
||
if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
|
||
{
|
||
if (is_opd && h != NULL)
|
||
{
|
||
/* Lie about opd entries. This case occurs
|
||
when building shared libraries and we
|
||
reference a function in another shared
|
||
lib. The same thing happens for a weak
|
||
definition in an application that's
|
||
overridden by a strong definition in a
|
||
shared lib. (I believe this is a generic
|
||
bug in binutils handling of weak syms.)
|
||
In these cases we won't use the opd
|
||
entry in this lib. */
|
||
unresolved_reloc = FALSE;
|
||
}
|
||
outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
|
||
|
||
/* We need to relocate .opd contents for ld.so.
|
||
Prelink also wants simple and consistent rules
|
||
for relocs. This make all RELATIVE relocs have
|
||
*r_offset equal to r_addend. */
|
||
relocate = TRUE;
|
||
}
|
||
else
|
||
{
|
||
long indx = 0;
|
||
|
||
if (bfd_is_abs_section (sec))
|
||
;
|
||
else if (sec == NULL || sec->owner == NULL)
|
||
{
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return FALSE;
|
||
}
|
||
else
|
||
{
|
||
asection *osec;
|
||
|
||
osec = sec->output_section;
|
||
indx = elf_section_data (osec)->dynindx;
|
||
|
||
/* We are turning this relocation into one
|
||
against a section symbol, so subtract out
|
||
the output section's address but not the
|
||
offset of the input section in the output
|
||
section. */
|
||
outrel.r_addend -= osec->vma;
|
||
}
|
||
|
||
outrel.r_info = ELF64_R_INFO (indx, r_type);
|
||
}
|
||
}
|
||
|
||
sreloc = elf_section_data (input_section)->sreloc;
|
||
if (sreloc == NULL)
|
||
abort ();
|
||
|
||
loc = sreloc->contents;
|
||
loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
|
||
bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
|
||
|
||
/* If this reloc is against an external symbol, it will
|
||
be computed at runtime, so there's no need to do
|
||
anything now. However, for the sake of prelink ensure
|
||
that the section contents are a known value. */
|
||
if (! relocate)
|
||
{
|
||
unresolved_reloc = FALSE;
|
||
/* The value chosen here is quite arbitrary as ld.so
|
||
ignores section contents except for the special
|
||
case of .opd where the contents might be accessed
|
||
before relocation. Choose zero, as that won't
|
||
cause reloc overflow. */
|
||
relocation = 0;
|
||
addend = 0;
|
||
/* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
|
||
to improve backward compatibility with older
|
||
versions of ld. */
|
||
if (r_type == R_PPC64_ADDR64)
|
||
addend = outrel.r_addend;
|
||
/* Adjust pc_relative relocs to have zero in *r_offset. */
|
||
else if (ppc64_elf_howto_table[r_type]->pc_relative)
|
||
addend = (input_section->output_section->vma
|
||
+ input_section->output_offset
|
||
+ rel->r_offset);
|
||
}
|
||
}
|
||
break;
|
||
|
||
case R_PPC64_COPY:
|
||
case R_PPC64_GLOB_DAT:
|
||
case R_PPC64_JMP_SLOT:
|
||
case R_PPC64_RELATIVE:
|
||
/* We shouldn't ever see these dynamic relocs in relocatable
|
||
files. */
|
||
/* Fall through. */
|
||
|
||
case R_PPC64_PLTGOT16:
|
||
case R_PPC64_PLTGOT16_DS:
|
||
case R_PPC64_PLTGOT16_HA:
|
||
case R_PPC64_PLTGOT16_HI:
|
||
case R_PPC64_PLTGOT16_LO:
|
||
case R_PPC64_PLTGOT16_LO_DS:
|
||
case R_PPC64_PLTREL32:
|
||
case R_PPC64_PLTREL64:
|
||
/* These ones haven't been implemented yet. */
|
||
|
||
(*_bfd_error_handler)
|
||
(_("%s: relocation %s is not supported for symbol %s."),
|
||
bfd_archive_filename (input_bfd),
|
||
ppc64_elf_howto_table[r_type]->name, sym_name);
|
||
|
||
bfd_set_error (bfd_error_invalid_operation);
|
||
ret = FALSE;
|
||
continue;
|
||
}
|
||
|
||
/* Do any further special processing. */
|
||
switch (r_type)
|
||
{
|
||
default:
|
||
break;
|
||
|
||
case R_PPC64_ADDR16_HA:
|
||
case R_PPC64_ADDR16_HIGHERA:
|
||
case R_PPC64_ADDR16_HIGHESTA:
|
||
case R_PPC64_GOT16_HA:
|
||
case R_PPC64_PLTGOT16_HA:
|
||
case R_PPC64_PLT16_HA:
|
||
case R_PPC64_TOC16_HA:
|
||
case R_PPC64_SECTOFF_HA:
|
||
case R_PPC64_TPREL16_HA:
|
||
case R_PPC64_DTPREL16_HA:
|
||
case R_PPC64_GOT_TLSGD16_HA:
|
||
case R_PPC64_GOT_TLSLD16_HA:
|
||
case R_PPC64_GOT_TPREL16_HA:
|
||
case R_PPC64_GOT_DTPREL16_HA:
|
||
case R_PPC64_TPREL16_HIGHER:
|
||
case R_PPC64_TPREL16_HIGHERA:
|
||
case R_PPC64_TPREL16_HIGHEST:
|
||
case R_PPC64_TPREL16_HIGHESTA:
|
||
case R_PPC64_DTPREL16_HIGHER:
|
||
case R_PPC64_DTPREL16_HIGHERA:
|
||
case R_PPC64_DTPREL16_HIGHEST:
|
||
case R_PPC64_DTPREL16_HIGHESTA:
|
||
/* It's just possible that this symbol is a weak symbol
|
||
that's not actually defined anywhere. In that case,
|
||
'sec' would be NULL, and we should leave the symbol
|
||
alone (it will be set to zero elsewhere in the link). */
|
||
if (sec != NULL)
|
||
/* Add 0x10000 if sign bit in 0:15 is set.
|
||
Bits 0:15 are not used. */
|
||
addend += 0x8000;
|
||
break;
|
||
|
||
case R_PPC64_ADDR16_DS:
|
||
case R_PPC64_ADDR16_LO_DS:
|
||
case R_PPC64_GOT16_DS:
|
||
case R_PPC64_GOT16_LO_DS:
|
||
case R_PPC64_PLT16_LO_DS:
|
||
case R_PPC64_SECTOFF_DS:
|
||
case R_PPC64_SECTOFF_LO_DS:
|
||
case R_PPC64_TOC16_DS:
|
||
case R_PPC64_TOC16_LO_DS:
|
||
case R_PPC64_PLTGOT16_DS:
|
||
case R_PPC64_PLTGOT16_LO_DS:
|
||
case R_PPC64_GOT_TPREL16_DS:
|
||
case R_PPC64_GOT_TPREL16_LO_DS:
|
||
case R_PPC64_GOT_DTPREL16_DS:
|
||
case R_PPC64_GOT_DTPREL16_LO_DS:
|
||
case R_PPC64_TPREL16_DS:
|
||
case R_PPC64_TPREL16_LO_DS:
|
||
case R_PPC64_DTPREL16_DS:
|
||
case R_PPC64_DTPREL16_LO_DS:
|
||
insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
|
||
mask = 3;
|
||
/* If this reloc is against an lq insn, then the value must be
|
||
a multiple of 16. This is somewhat of a hack, but the
|
||
"correct" way to do this by defining _DQ forms of all the
|
||
_DS relocs bloats all reloc switches in this file. It
|
||
doesn't seem to make much sense to use any of these relocs
|
||
in data, so testing the insn should be safe. */
|
||
if ((insn & (0x3f << 26)) == (56u << 26))
|
||
mask = 15;
|
||
if (((relocation + addend) & mask) != 0)
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%s: error: relocation %s not a multiple of %d"),
|
||
bfd_archive_filename (input_bfd),
|
||
ppc64_elf_howto_table[r_type]->name,
|
||
mask + 1);
|
||
bfd_set_error (bfd_error_bad_value);
|
||
ret = FALSE;
|
||
continue;
|
||
}
|
||
break;
|
||
|
||
case R_PPC64_REL14:
|
||
case R_PPC64_REL14_BRNTAKEN:
|
||
case R_PPC64_REL14_BRTAKEN:
|
||
max_br_offset = 1 << 15;
|
||
goto branch_check;
|
||
|
||
case R_PPC64_REL24:
|
||
max_br_offset = 1 << 25;
|
||
|
||
branch_check:
|
||
/* If the branch is out of reach or the TOC register needs
|
||
adjusting, then redirect the call to the local stub for
|
||
this function. */
|
||
from = (rel->r_offset
|
||
+ input_section->output_offset
|
||
+ input_section->output_section->vma);
|
||
if ((relocation + addend - from + max_br_offset >= 2 * max_br_offset
|
||
|| (sec != NULL
|
||
&& sec->output_section != NULL
|
||
&& sec->id <= htab->top_id
|
||
&& (htab->stub_group[sec->id].toc_off
|
||
!= htab->stub_group[input_section->id].toc_off)))
|
||
&& (stub_entry = ppc_get_stub_entry (input_section, sec, h,
|
||
rel, htab)) != NULL)
|
||
{
|
||
/* Munge up the value and addend so that we call the stub
|
||
rather than the procedure directly. */
|
||
relocation = (stub_entry->stub_offset
|
||
+ stub_entry->stub_sec->output_offset
|
||
+ stub_entry->stub_sec->output_section->vma);
|
||
addend = 0;
|
||
}
|
||
break;
|
||
}
|
||
|
||
/* Dynamic relocs are not propagated for SEC_DEBUGGING sections
|
||
because such sections are not SEC_ALLOC and thus ld.so will
|
||
not process them. */
|
||
if (unresolved_reloc
|
||
&& !((input_section->flags & SEC_DEBUGGING) != 0
|
||
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%s(%s+0x%lx): unresolvable %s relocation against symbol `%s'"),
|
||
bfd_archive_filename (input_bfd),
|
||
bfd_get_section_name (input_bfd, input_section),
|
||
(long) rel->r_offset,
|
||
ppc64_elf_howto_table[(int) r_type]->name,
|
||
h->root.root.string);
|
||
ret = FALSE;
|
||
}
|
||
|
||
r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
|
||
input_bfd,
|
||
input_section,
|
||
contents,
|
||
rel->r_offset,
|
||
relocation,
|
||
addend);
|
||
|
||
if (r != bfd_reloc_ok)
|
||
{
|
||
if (sym_name == NULL)
|
||
sym_name = "(null)";
|
||
if (r == bfd_reloc_overflow)
|
||
{
|
||
if (warned)
|
||
continue;
|
||
if (h != NULL
|
||
&& h->root.type == bfd_link_hash_undefweak
|
||
&& ppc64_elf_howto_table[r_type]->pc_relative)
|
||
{
|
||
/* Assume this is a call protected by other code that
|
||
detects the symbol is undefined. If this is the case,
|
||
we can safely ignore the overflow. If not, the
|
||
program is hosed anyway, and a little warning isn't
|
||
going to help. */
|
||
|
||
continue;
|
||
}
|
||
|
||
if (!((*info->callbacks->reloc_overflow)
|
||
(info, sym_name, ppc64_elf_howto_table[r_type]->name,
|
||
rel->r_addend, input_bfd, input_section, rel->r_offset)))
|
||
return FALSE;
|
||
}
|
||
else
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%s(%s+0x%lx): %s reloc against `%s': error %d"),
|
||
bfd_archive_filename (input_bfd),
|
||
bfd_get_section_name (input_bfd, input_section),
|
||
(long) rel->r_offset,
|
||
ppc64_elf_howto_table[r_type]->name,
|
||
sym_name,
|
||
(int) r);
|
||
ret = FALSE;
|
||
}
|
||
}
|
||
}
|
||
|
||
return ret;
|
||
}
|
||
|
||
/* Adjust the value of any local symbols in opd sections. */
|
||
|
||
static bfd_boolean
|
||
ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
|
||
const char *name ATTRIBUTE_UNUSED,
|
||
Elf_Internal_Sym *elfsym,
|
||
asection *input_sec,
|
||
struct elf_link_hash_entry *h)
|
||
{
|
||
long *adjust;
|
||
bfd_vma value;
|
||
|
||
if (h != NULL
|
||
|| input_sec == NULL
|
||
|| ppc64_elf_section_data (input_sec) == NULL
|
||
|| (adjust = ppc64_elf_section_data (input_sec)->opd.adjust) == NULL)
|
||
return TRUE;
|
||
|
||
value = elfsym->st_value - input_sec->output_offset;
|
||
if (!info->relocatable)
|
||
value -= input_sec->output_section->vma;
|
||
|
||
elfsym->st_value += adjust[value / 24];
|
||
return TRUE;
|
||
}
|
||
|
||
/* Finish up dynamic symbol handling. We set the contents of various
|
||
dynamic sections here. */
|
||
|
||
static bfd_boolean
|
||
ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
|
||
struct bfd_link_info *info,
|
||
struct elf_link_hash_entry *h,
|
||
Elf_Internal_Sym *sym)
|
||
{
|
||
struct ppc_link_hash_table *htab;
|
||
bfd *dynobj;
|
||
|
||
htab = ppc_hash_table (info);
|
||
dynobj = htab->elf.dynobj;
|
||
|
||
if (((struct ppc_link_hash_entry *) h)->is_func_descriptor)
|
||
{
|
||
struct plt_entry *ent;
|
||
Elf_Internal_Rela rela;
|
||
bfd_byte *loc;
|
||
|
||
for (ent = h->plt.plist; ent != NULL; ent = ent->next)
|
||
if (ent->plt.offset != (bfd_vma) -1)
|
||
{
|
||
/* This symbol has an entry in the procedure linkage
|
||
table. Set it up. */
|
||
|
||
if (htab->plt == NULL
|
||
|| htab->relplt == NULL
|
||
|| htab->glink == NULL)
|
||
abort ();
|
||
|
||
/* Create a JMP_SLOT reloc to inform the dynamic linker to
|
||
fill in the PLT entry. */
|
||
rela.r_offset = (htab->plt->output_section->vma
|
||
+ htab->plt->output_offset
|
||
+ ent->plt.offset);
|
||
rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
|
||
rela.r_addend = ent->addend;
|
||
|
||
loc = htab->relplt->contents;
|
||
loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
|
||
* sizeof (Elf64_External_Rela));
|
||
bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
|
||
}
|
||
}
|
||
|
||
if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
|
||
{
|
||
Elf_Internal_Rela rela;
|
||
bfd_byte *loc;
|
||
|
||
/* This symbol needs a copy reloc. Set it up. */
|
||
|
||
if (h->dynindx == -1
|
||
|| (h->root.type != bfd_link_hash_defined
|
||
&& h->root.type != bfd_link_hash_defweak)
|
||
|| htab->relbss == NULL)
|
||
abort ();
|
||
|
||
rela.r_offset = (h->root.u.def.value
|
||
+ h->root.u.def.section->output_section->vma
|
||
+ h->root.u.def.section->output_offset);
|
||
rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
|
||
rela.r_addend = 0;
|
||
loc = htab->relbss->contents;
|
||
loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
|
||
bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
|
||
}
|
||
|
||
/* Mark some specially defined symbols as absolute. */
|
||
if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
|
||
sym->st_shndx = SHN_ABS;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Used to decide how to sort relocs in an optimal manner for the
|
||
dynamic linker, before writing them out. */
|
||
|
||
static enum elf_reloc_type_class
|
||
ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
|
||
{
|
||
enum elf_ppc64_reloc_type r_type;
|
||
|
||
r_type = ELF64_R_TYPE (rela->r_info);
|
||
switch (r_type)
|
||
{
|
||
case R_PPC64_RELATIVE:
|
||
return reloc_class_relative;
|
||
case R_PPC64_JMP_SLOT:
|
||
return reloc_class_plt;
|
||
case R_PPC64_COPY:
|
||
return reloc_class_copy;
|
||
default:
|
||
return reloc_class_normal;
|
||
}
|
||
}
|
||
|
||
/* Finish up the dynamic sections. */
|
||
|
||
static bfd_boolean
|
||
ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
|
||
struct bfd_link_info *info)
|
||
{
|
||
struct ppc_link_hash_table *htab;
|
||
bfd *dynobj;
|
||
asection *sdyn;
|
||
|
||
htab = ppc_hash_table (info);
|
||
dynobj = htab->elf.dynobj;
|
||
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
|
||
|
||
if (htab->elf.dynamic_sections_created)
|
||
{
|
||
Elf64_External_Dyn *dyncon, *dynconend;
|
||
|
||
if (sdyn == NULL || htab->got == NULL)
|
||
abort ();
|
||
|
||
dyncon = (Elf64_External_Dyn *) sdyn->contents;
|
||
dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
|
||
for (; dyncon < dynconend; dyncon++)
|
||
{
|
||
Elf_Internal_Dyn dyn;
|
||
asection *s;
|
||
|
||
bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
|
||
|
||
switch (dyn.d_tag)
|
||
{
|
||
default:
|
||
continue;
|
||
|
||
case DT_PPC64_GLINK:
|
||
s = htab->glink;
|
||
dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
|
||
/* We stupidly defined DT_PPC64_GLINK to be the start
|
||
of glink rather than the first entry point, which is
|
||
what ld.so needs, and now have a bigger stub to
|
||
support automatic multiple TOCs. */
|
||
dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
|
||
break;
|
||
|
||
case DT_PPC64_OPD:
|
||
s = bfd_get_section_by_name (output_bfd, ".opd");
|
||
if (s == NULL)
|
||
continue;
|
||
dyn.d_un.d_ptr = s->vma;
|
||
break;
|
||
|
||
case DT_PPC64_OPDSZ:
|
||
s = bfd_get_section_by_name (output_bfd, ".opd");
|
||
if (s == NULL)
|
||
continue;
|
||
dyn.d_un.d_val = s->size;
|
||
break;
|
||
|
||
case DT_PLTGOT:
|
||
s = htab->plt;
|
||
dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
|
||
break;
|
||
|
||
case DT_JMPREL:
|
||
s = htab->relplt;
|
||
dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
|
||
break;
|
||
|
||
case DT_PLTRELSZ:
|
||
dyn.d_un.d_val = htab->relplt->size;
|
||
break;
|
||
|
||
case DT_RELASZ:
|
||
/* Don't count procedure linkage table relocs in the
|
||
overall reloc count. */
|
||
s = htab->relplt;
|
||
if (s == NULL)
|
||
continue;
|
||
dyn.d_un.d_val -= s->size;
|
||
break;
|
||
|
||
case DT_RELA:
|
||
/* We may not be using the standard ELF linker script.
|
||
If .rela.plt is the first .rela section, we adjust
|
||
DT_RELA to not include it. */
|
||
s = htab->relplt;
|
||
if (s == NULL)
|
||
continue;
|
||
if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
|
||
continue;
|
||
dyn.d_un.d_ptr += s->size;
|
||
break;
|
||
}
|
||
|
||
bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
|
||
}
|
||
}
|
||
|
||
if (htab->got != NULL && htab->got->size != 0)
|
||
{
|
||
/* Fill in the first entry in the global offset table.
|
||
We use it to hold the link-time TOCbase. */
|
||
bfd_put_64 (output_bfd,
|
||
elf_gp (output_bfd) + TOC_BASE_OFF,
|
||
htab->got->contents);
|
||
|
||
/* Set .got entry size. */
|
||
elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
|
||
}
|
||
|
||
if (htab->plt != NULL && htab->plt->size != 0)
|
||
{
|
||
/* Set .plt entry size. */
|
||
elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
|
||
= PLT_ENTRY_SIZE;
|
||
}
|
||
|
||
/* We need to handle writing out multiple GOT sections ourselves,
|
||
since we didn't add them to DYNOBJ. */
|
||
while ((dynobj = dynobj->link_next) != NULL)
|
||
{
|
||
asection *s;
|
||
s = ppc64_elf_tdata (dynobj)->got;
|
||
if (s != NULL
|
||
&& s->size != 0
|
||
&& s->output_section != bfd_abs_section_ptr
|
||
&& !bfd_set_section_contents (output_bfd, s->output_section,
|
||
s->contents, s->output_offset,
|
||
s->size))
|
||
return FALSE;
|
||
s = ppc64_elf_tdata (dynobj)->relgot;
|
||
if (s != NULL
|
||
&& s->size != 0
|
||
&& s->output_section != bfd_abs_section_ptr
|
||
&& !bfd_set_section_contents (output_bfd, s->output_section,
|
||
s->contents, s->output_offset,
|
||
s->size))
|
||
return FALSE;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
#include "elf64-target.h"
|