An assignment to dot in an output section that allocates space of
course keeps the output section. Here, I'm changing the behaviour for
assignments that don't allocate space. The idea is not so much to
allow people to force output of an empty section with ". = .", but
to fix cases where an otherwise empty section has padding added by an
alignment expression that changes with relaxation or .eh_frame
editing. Such a section might have zero size before relaxation and so
be stripped incorrectly.
ld/
* ld.texinfo (Output Section Discarding): Mention assigning to dot
as a way of keeping otherwise empty sections.
* ldexp.c (is_dot, is_value, is_sym_value, is_dot_ne_0,
is_dot_plus_0, is_align_conditional): New predicates.
(exp_fold_tree_1): Set SEC_KEEP when assigning to dot inside an
output section, except for some special cases.
* scripttempl/elfmicroblaze.sc: Use canonical form to align at
end of .heap and .stack.
ld/testsuite/
* ld-shared/elf-offset.ld: Align end of .bss with canonical form
of ALIGN that allows an empty .bss to be removed.
* ld-arm/arm-dyn.ld: Likewise.
* ld-arm/arm-lib.ld: Likewise.
* ld-elfvsb/elf-offset.ld: Likewise.
* ld-mips-elf/mips-dyn.ld: Likewise.
* ld-mips-elf/mips-lib.ld: Likewise.
* ld-arm/arm-no-rel-plt.ld: Remove duplicate ALIGN.
* ld-powerpc/vle-multiseg-1.ld: Remove ALIGN at start of section.
ALIGN address of section instead.
* ld-powerpc/vle-multiseg-2.ld: Likewise.
* ld-powerpc/vle-multiseg-3.ld: Likewise.
* ld-powerpc/vle-multiseg-4.ld: Likewise.
* ld-powerpc/vle-multiseg-6.ld: Likewise.
* ld-scripts/empty-aligned.d: Check section headers not program
headers. Remove xfail and notarget.
* ld-scripts/empty-aligned.t: Use canonical ALIGN for end of .text2.
output deterministic. time.h include is no longer needed.
* resres.c (res_append_resource): Likewise.
* pe-dll.c (fill_edata): Only use a real timestamp if
--insert-timestamp was used.
* emultempl/pe.em: Add the --insert-timestamp option.
* emultempl/pep.em: Likewise for 64bit.
* ld.texinfo: Document the --insert-timestamp option.
* libcoff-in.h: Add insert_timestamp flag to the pe_data struct.
* libcoff.h: Regenerate.
* peXXigen.c (_bfd_XXi_only_swap_filehdr_out): Only use a real
timestamp if --insert-timestamp was used.
* ldgram.y: Likewise
* ldlex.l: Likewise
* NEWS: Mention the new feature.
* ld.texinfo: Document the new feature.
* ld-scripts/log2.exp: New: Run the new log2 test.
* ld-scripts/log2.s: Source for the new test.
* ld-scripts/log2.t: Linker script for new test.
The "new" dtags options have been around for 14+ years, so there
shouldn't be a need to generate both new & old tags anymore.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Correct ordering of M68HC11 entry.
* doc/binutils.texi: Fix ordering of top level nodes.
Replace erroneous uses of @itemx with @item.
* bfd.texinfo: Replace @ with @@ when it is part of the text.
* elf64-ppc.c: Define more insns used in plt call stubs.
(ppc64_elf_brtaken_reloc): Assume isa version 2 or above.
(ppc64_elf_relocate_section): Likewise.
(enum ppc_stub_type): Add ppc_stub_plt_call_r2save.
(struct ppc_link_hash_table): Increase size of stub_count array.
Add plt_stub_align and plt_thread_safe.
(ALWAYS_USE_FAKE_DEP, ALWAYS_EMIT_R2SAVE): Define.
(plt_stub_size, plt_stub_pad): New functions.
(build_plt_stub): Emit barriers for power7 thread safety. Don't
emit needless save of r2.
(build_tls_get_addr_stub): Adjust params.
(ppc_build_one_stub): Handle ppc_stub_plt_call_r2save and aligning
plt stubs. Adjust build_*plt_stub calls.
(ppc_size_one_stub): Similarly.
(ppc64_elf_size_stubs): Accept plt_thread_safe and plt_stub_align
params. Choose default for plt_thread_safe based on existence of
calls to thread creation functions. Modify plt_call to
plt_call_r2save when no tocsave reloc found. Align tail of stub
sections.
(ppc64_elf_build_stubs): Align tail of stub sections. Adjust
output of stub statistics.
(ppc64_elf_relocate_section): Handle ppc_stub_plt_call_r2save.
* elf64-ppc.h (ppc64_elf_size_stubs): Update prototype.
ld/
* emultempl/ppc64elf.em (PARSE_AND_LIST_PROLOGUE,
PARSE_AND_LIST_LONGOPTS, PARSE_AND_LIST_OPTIONS,
PARSE_AND_LIST_ARGS_CASES): Handle --{no-,}plt-thread-safe and
--{no-,}plt-align.
(plt_thread_safe, plt_stub_align): New vars.
(gld${EMULATION_NAME}_after_allocation): Pass them to
ppc64_elf_size_stubs. Align stub sections according to plt_stub_align.
* ld.texinfo: Document new command line options, and an old
undocumented option.
* bfd/bfd-in2.h (bfd_elf32_arm_set_target_relocs): Likewise.
* bfd/elf32-arm.c (elf32_arm_link_hash_table): New field.
(elf232_arm_link_hash_table_create): Initialise new field.
(check_use_blx): Change test depending on fix_arm1176.
(bfd_elf32_arm_set_target_relocs): Set fix_arm1176 from
command line options.
* ld/emultempl/armelf.em (fix_arm1176): New variable.
(arm_elf_create_output_section_statements): Pass
fix_arm1176 option to bfd backend.
(OPTION_FIX_ARM1176): New define.
(OPTION_NO_FIX_ARM1176): Likewise.
(PARSE_AND_LIST_LONGOPTS): Add new command line options.
(PARSE_AND_LIST_OPTIONS): Likewise.
(PARSE_AND_LIST_ARGS_CASES): Likewise.
* ld/ld.texinfo: Document new command line options.
* ld/testsuite/ld-arm/arm-elf.exp (armelftests): Update for new command-line
options.
(armeabitests): Update for new command-line options, and add
new test cases.
* ld/testsuite/ld-arm/fix-arm1176.s: Add test case.
* ld/testsuite/ld-arm/fix-arm1176-off.d: Likewise.
* ld/testsuite/ld-arm/fix-arm1176-on.d: Likewise.
* tic6x.h (R_C6000_JUMP_SPLOT, R_C6000_EHTYPE,
R_C6000_PCR_H16, R_C6000_PCR_L16): New relocs.
(SHN_TIC6X_SCOMMON): Define.
bfd/
* elf32-tic6x.h (struct elf32_tic6x_params): New.
(elf32_tic6x_setup): Declare.
* elf32-tic6x.c: Include <limits.h>.
(ELF_DYNAMIC_LINKER, DEFAULT_STACK_SIZE, PLT_ENTRY_SIZE): Define.
(struct elf32_tic6x_link_hash_table, struct elf32_link_hash_entry):
New structures.
(elf32_tic6x_link_hash_table, is_tic6x_elf): New macros.
(tic6x_elf_scom_section, tic6x_elf_scom_symbol,
tic6x_elf_scom_symbol_ptr): New static variables.
(elf32_tic6x_howto_table, elf32_tic6x_howto_table_rel,
elf32_tic6x_reloc_map): Add R_C6000_JUMP_SLOT, R_C6000_EHTYPE,
R_C6000_PCR_H16 and R_C6000_PCR_L16.
(elf32_tic6x_link_hash_newfunc, elf32_tic6x_link_hash_table_create,
elf32_tic6x_link_hash_table_free, elf32_tic6x_setup,
elf32_tic6x_using_dsbt, elf32_tic6x_install_rela,
elf32_tic6x_create_dynamic_sections, elf32_tic6x_make_got_dynreloc,
elf32_tic6x_finish_dynamic_symbol, elf32_tic6x_gc_sweep_hook,
elf32_tic6x_adjust_dynamic_symbol): New static functions.
(elf32_tic6x_relocate_section): For R_C6000_PCR_S21, convert branches
to weak symbols as required by the ABI.
Handle GOT and DSBT_INDEX relocs, and copy relocs to the output file
as needed when generating DSBT output.
(elf32_tic6x_check_relocs, elf32_tic6x_add_symbol_hook,
elf32_tic6x_symbol_processing, elf32_tic6x_section_from_bfd_section,
elf32_tic6x_allocate_dynrelocs, elf32_tic6x_size_dynamic_sections,
elf32_tic6x_always_size_sections, elf32_tic6x_modify_program_headers,
elf32_tic6x_finish_dynamic_sections, elf32_tic6x_plt_sym_val,
elf32_tic6x_copy_private_data, elf32_tic6x_link_omit_section_dynsym):
New static functions.
(ELF_MAXPAGESIZE): Define to 0x1000.
(bfd_elf32_bfd_copy_private_bfd_data,
bfd_elf32_bfd_link_hash_table_create,
bfd_elf32_bfd_link_hash_table_free, elf_backend_can_refcount,
elf_backend_want_got_plt, elf_backend_want_dynbss,
elf_backend_plt_readonly, elf_backend_got_header_size,
elf_backend_gc_sweep_hook, elf_backend_modify_program_headers,
elf_backend_create_dynamic_sections, elf_backend_adjust_dynamic_symbol,
elf_backend_check_relocs, elf_backend_add_symbol_hook,
elf_backend_symbol_processing, elf_backend_link_output_symbol_hook,
elf_backend_section_from_bfd_section,
elf_backend_finish_dynamic_symbol, elf_backend_always_size_sections,
elf32_tic6x_size_dynamic_sections, elf_backend_finish_dynamic_sections,
elf_backend_omit_section_dynsym, elf_backend_plt_sym_val): Define.
* bfd/reloc.c (BFD_RELOC_C6000_JUMP_SLOT, BFD_RELOC_C6000_EHTYPE,
BFD_RELOC_C6000_PCR_H16, BFD_RELOC_C6000_PCR_S16): Add.
* bfd/bfd-in2.h: Regenerate.
* bfd/libbfd.h: Regenerate.
* config.bfd: Accept tic6x-*-* instead of tic6x-*-elf.
gas/
* config/tc-tic6x.c (sbss_section, scom_section, scom_symbol): New
static variables.
(md_begin): Initialize them.
(s_tic6x_scomm): New static function.
(md_pseudo_table): Add "scomm".
(tc_gen_reloc): Really undo all adjustments made by
bfd_install_relocation.
* doc/c-tic6x.texi: Document the .scomm directive.
gas/testsuite/
* gas/tic6x/scomm-directive-1.s: New test.
* gas/tic6x/scomm-directive-1.d: New test.
* gas/tic6x/scomm-directive-2.s: New test.
* gas/tic6x/scomm-directive-2.d: New test.
* gas/tic6x/scomm-directive-3.s: New test.
* gas/tic6x/scomm-directive-3.d: New test.
* gas/tic6x/scomm-directive-4.s: New test.
* gas/tic6x/scomm-directive-4.d: New test.
* gas/tic6x/scomm-directive-5.s: New test.
* gas/tic6x/scomm-directive-5.d: New test.
* gas/tic6x/scomm-directive-6.s: New test.
* gas/tic6x/scomm-directive-6.d: New test.
* gas/tic6x/scomm-directive-7.s: New test.
* gas/tic6x/scomm-directive-7.d: New test.
* gas/tic6x/scomm-directive-8.s: New test.
* gas/tic6x/scomm-directive-8.d: New test.
ld/
* emulparams/elf32_tic6x_le.sh (BIG_OUTPUT_FORMAT, EXTRA_EM_FILE,
GENERATE_SHLIB_SCRIPT): New defines.
(TEXT_START_ADDR): Define differently depending on target.
(.got): Redefine to include "*(.dsbt)".
(SDATA_START_SYMBOLS): Remove, replace with
(OTHER_GOT_SYMBOLS): New.
(OTHER_BSS_SECTIONS): Define only for ELF targets.
* emultempl/tic6xdsbt.em: New file.
* gen-doc.texi: Set C6X.
* ld.texinfo: Likewise.
(Options specific to C6X uClinux targets): New section.
binutils/
* readelf.c (get_symbol_index_type): Handle SCOM for TIC6X.
(dump_relocations): Likewise.
binutils/testsuite/
* lib/binutils-common.exp (is_elf_format): Accept tic6x*-*-uclinux*.
ld/testsuite/
* ld-scripts/crossref.exp: Add CFLAGS for tic6x*-*-*.
* ld-elf/sec-to-seg.exp: Remove tic6x from list of targets defining
pagesize to 1.
* ld-tic6x/tic6x.exp: Add support for DSBT shared library/executable
linking tests.
* ld-tic6x/dsbt.ld: New linker script.
* ld-tic6x/dsbt-be.ld: New linker script.
* ld-tic6x/dsbt-overflow.ld: New linker script.
* ld-tic6x/dsbt-inrange.ld: New linker script.
* ld-tic6x/shlib-1.s: New test.
* ld-tic6x/shlib-2.s: New test.
* ld-tic6x/shlib-app-1r.s: New test.
* ld-tic6x/shlib-app-1.s: New test.
* ld-tic6x/shlib-1.sd: New test.
* ld-tic6x/shlib-1.dd: New test.
* ld-tic6x/shlib-app-1.rd: New test.
* ld-tic6x/shlib-app-1rb.rd: New test.
* ld-tic6x/shlib-app-1.sd: New test.
* ld-tic6x/static-app-1rb.od: New test.
* ld-tic6x/shlib-app-1.dd: New test.
* ld-tic6x/shlib-app-1rb.sd: New test.
* ld-tic6x/static-app-1b.od: New test.
* ld-tic6x/static-app-1r.od: New test.
* ld-tic6x/shlib-1rb.rd: New test.
* ld-tic6x/shlib-app-1rb.dd: New test.
* ld-tic6x/shlib-1rb.sd: New test.
* ld-tic6x/shlib-1rb.dd: New test.
* ld-tic6x/shlib-app-1b.od: New test.
* ld-tic6x/tic6x.exp: New test.
* ld-tic6x/static-app-1rb.rd: New test.
* ld-tic6x/shlib-app-1r.od: New test.
* ld-tic6x/static-app-1.od: New test.
* ld-tic6x/static-app-1b.rd: New test.
* ld-tic6x/static-app-1r.rd: New test.
* ld-tic6x/static-app-1rb.sd: New test.
* ld-tic6x/static-app-1b.sd: New test.
* ld-tic6x/static-app-1rb.dd: New test.
* ld-tic6x/static-app-1r.sd: New test.
* ld-tic6x/static-app-1b.dd: New test.
* ld-tic6x/shlib-1b.rd: New test.
* ld-tic6x/static-app-1r.dd: New test.
* ld-tic6x/shlib-app-1b.rd: New test.
* ld-tic6x/shlib-1r.rd: New test.
* ld-tic6x/shlib-app-1r.rd: New test.
* ld-tic6x/shlib-1b.sd: New test.
* ld-tic6x/static-app-1.rd: New test.
* ld-tic6x/shlib-app-1b.sd: New test.
* ld-tic6x/shlib-1r.sd: New test.
* ld-tic6x/shlib-1b.dd: New test.
* ld-tic6x/shlib-app-1r.sd: New test.
* ld-tic6x/shlib-app-1b.dd: New test.
* ld-tic6x/shlib-1r.dd: New test.
* ld-tic6x/static-app-1.sd: New test.
* ld-tic6x/shlib-app-1r.dd: New test.
* ld-tic6x/static-app-1.dd: New test.
* ld-tic6x/shlib-noindex.rd: New test.
* ld-tic6x/shlib-noindex.dd: New test.
* ld-tic6x/shlib-noindex.sd: New test.
* ld-tic6x/got-reloc-local-1.s: New test.
* ld-tic6x/got-reloc-local-2.s: New test.
* ld-tic6x/got-reloc-local-r.d: New test.
* ld-tic6x/got-reloc-global.s: New test.
* ld-tic6x/got-reloc-global-addend-1.d: New test.
* ld-tic6x/got-reloc-global-addend-1.s: New test.
* ld-tic6x/got-reloc-global-addend-2.d: New test.
* ld-tic6x/got-reloc-inrange.d: New test.
* ld-tic6x/got-reloc-overflow.d: New test.
* ld-tic6x/got-reloc-global-addend-2.s: New test.
* ld-tic6x/dsbt-index-error.d: New test.
* ld-tic6x/dsbt-index.d: New test.
* ld-tic6x/dsbt-index.s: New test.
* ld-tic6x/shlib-app-1.od: New test.
* ld-tic6x/shlib-app-1rb.od: New test.
* ld-tic6x/shlib-1.rd: New test.
* ld-tic6x/weak.d: New test.
* ld-tic6x/weak-be.d: New test.
* ld-tic6x/weak.s: New test.
* ld-tic6x/weak-data.d: New test.
* ld-tic6x/common.d: New test.
* ld-tic6x/common.ld: New test.
* ld-tic6x/common.s: New test.
current_lma_offset_ field. Rename current_vma_offset_ to
current_offset_. Add last_section_ field.
(Memory_region::get_current_vma_address): Rename to
get_current_address.
(Memory_region::get_current_lma_address): Delete.
(Memory_region::increment_vma_offset): Rename to
increment_offset.
(Memory_region::increment_lma_offset): Delete.
(Memory_region::attributes_compatible): New method. Returns
true if the provided section is compatible with the region.
(Memory_region::get_last_section): New method. Returns the last
section to use the region.
(Memory_region::set_last_section): New method. Stores the last
section to use the region.
(Script_sections::block_in_region): New method. Returns true if
a block of memory is contained within a region.
(Script_sections::find_memory_region): New method. Locates a
memory region to be used to set a VMA or LMA address.
(Output_section_definition::set_section_addresses): Add code to
check for addresses set by memory regions.
(Output_segment::set_section_addresses): Remove memory region
walking code.
(Script_sections::create_segment): Add a warning if a header
segment is created outside of any region.
* script-sections.h (class Script_sections): Add prototypes for
find_memory_region and block_in_region methods.
* testsuite/memory_test.s: Use .long instead of .word.
* testsuite/memory_test.t: Add some more output sections.
* testsuite/memory_test.sh: Update expected output.
* ld.texinfo: Update description of computation of VMA and LMA
addresses for output sections.
* ld-scripts/rgn-at5.t: Add some more output sections.
* ld-scripts/rgn-at5.d: Update expected output.
* elf.c (bfd_elf_get_default_section_type): Don't test SEC_NEVER_LOAD.
* elflink.c (elf_link_input_bfd): Likewise.
ld/
* ld.texinfo (NOLOAD): Do not erroneously state that contents will
appear in output file.
* ldlang.c (lang_add_section): Clear SEC_HAS_CONTENTS on noload
unless SEC_COFF_SHARED_LIBRARY.
(map_input_to_output_sections): Don't set SEC_HAS_CONTENTS for noload
output sections.
(lang_size_sections_1): Don't test SEC_NEVER_LOAD when deciding
to update dot in region. Ditto when setting SEC_ALLOC if dot
advanced due to assignment.
* ldwrite.c (build_link_order): Don't test SEC_NEVER_LOAD.
