binutils-gdb/bfd/elf32-spu.h

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/* SPU specific support for 32-bit ELF.
Copyright (C) 2006-2018 Free Software Foundation, Inc.
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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 3 of the License, or
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(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., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
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struct spu_elf_params
{
/* Stash various callbacks for --auto-overlay. */
void (*place_spu_section) (asection *, asection *, const char *);
bfd_size_type (*spu_elf_load_ovl_mgr) (void);
FILE *(*spu_elf_open_overlay_script) (void);
void (*spu_elf_relink) (void);
/* Bit 0 set if --auto-overlay.
Bit 1 set if --auto-relink.
Bit 2 set if --overlay-rodata. */
unsigned int auto_overlay : 3;
#define AUTO_OVERLAY 1
#define AUTO_RELINK 2
#define OVERLAY_RODATA 4
/* Type of overlays, enum _ovly_flavour. */
unsigned int ovly_flavour : 1;
unsigned int compact_stub : 1;
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/* Set if we should emit symbols for stubs. */
unsigned int emit_stub_syms : 1;
/* Set if we want stubs on calls out of overlay regions to
non-overlay regions. */
unsigned int non_overlay_stubs : 1;
bfd/ * elf32-spu.c (struct spu_link_hash_table): Add init, line_size_log2, num_lines_log2. (struct got_entry): Add br_addr. (struct call_info): Add priority. (struct function_info): Add lr_store and sp_adjust. (spu_elf_setup): Init line_size_log2 and num_lines_log2. (spu_elf_find_overlays): For soft-icache, mark any section within cache area as an overlay, and check that no other overlays exist. Look up icache overlay manager entry sym. (BRA_STUBS, BRA, BRASL): Define. (enum _stub_type): Replace ovl_stub with call_ovl_stub and br*_ovl_stub. (needs_ovl_stub): Adjust for soft-icache. Return priority encoded in branch insn. (count_stub, build_stub): Support soft-icache. (build_spuear_stubs, process_stubs): Adjust build_stub call. (spu_elf_size_stubs): Size soft-icache stubs. (overlay_index): New function. (spu_elf_build_stubs): Make static. Support soft-icache. (spu_elf_check_vma): Don't turn off auto_overlay if soft-icache. (find_function_stack_adjust): Save lr store and stack adjust insn offsets. (maybe_insert_function): Adjust find_function_stack_adjust call. (mark_functions_via_relocs): Retrieve priority. (remove_cycles): Only warn about pruned arcs when stack_analysis. (sort_calls): Sort by priority first. (mark_overlay_section): Ignore .ovl.init. (sum_stack): Only print when stack_analysis. (print_one_overlay_section): New function, extracted from.. (spu_elf_auto_overlay): ..here. Support soft-icache overlays. (spu_elf_stack_analysis): Only print when htab->stack_analysis. (spu_elf_final_link): Call spu_elf_stack_analysis for lrlive analysis. Call spu_elf_build_stubs. (spu_elf_relocate_section): For soft-icache encode overlay index into addresses. (spu_elf_output_symbol_hook): Support soft-icache. (spu_elf_modify_program_headers: Likewise. * elf32-spu.h (struct spu_elf_params): Add lrlive_analysis. Rename num_regions to num_lines. Add line_size and max_branch. (enum _ovly_flavour): Add ovly_soft_icache. (spu_elf_build_stubs): Delete. gas/ * config/tc-spu.c (md_pseudo_table): Add "brinfo". (brinfo): New var. (md_assemble): Poke brinfo into branch instructions. (spu_brinfo): New function. (md_apply_fix): Don't assume insn fields start off at zero, mask them to remove possible brinfo. ld/ * emultempl/spuelf.em (params): Init new fields. (num_lines_set, line_size_set, icache_mgr, icache_mgr_stream): New vars. (spu_place_special_section): Adjust placement for soft-icache. Pad soft-icache section to a fixed size. Clear addr_tree. (spu_elf_load_ovl_mgr): Support soft-icache. Map overlay manager sections a little more intelligently. (gld${EMULATION_NAME}_finish): Don't call spu_elf_build_stubs. (OPTION_SPU_NUM_LINES): Rename from OPTION_SPU_NUM_REGIONS. (OPTION_SPU_SOFT_ICACHE, OPTION_SPU_LINE_SIZE): Define. (OPTION_SPU_LRLIVE): Define. (PARSE_AND_LIST_LONGOPTS): Add new soft-icache options. (PARSE_AND_LIST_OPTIONS): Likewise. (PARSE_AND_LIST_ARGS_CASES): Handle them. * emultempl/spu_icache.S: Dummy file. * emultempl/spu_icache.o_c: Regenerate. * Makefile.am (eelf32_spu.c): Depend on spu_icache.o_c. (spu_icache.o_c): Add rule to build. (CLEANFILES): Zap temp files. (EXTRA_DIST): Add spu_icache.o_c. * Makefile.in: Regenerate. ld/testsuite/ * ld-spu/ovl.d: Allow for absolute branches in stubs. * ld-spu/ovl2.d: Likewise.
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/* Set if lr liveness analysis should be done. */
unsigned int lrlive_analysis : 1;
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/* Set if stack size analysis should be done. */
unsigned int stack_analysis : 1;
/* Set if __stack_* syms will be emitted. */
unsigned int emit_stack_syms : 1;
/* Set if non-icache code should be allowed in icache lines. */
unsigned int non_ia_text : 1;
/* Set when the .fixup section should be generated. */
unsigned int emit_fixups : 1;
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/* Range of valid addresses for loadable sections. */
bfd_vma local_store_lo;
bfd_vma local_store_hi;
/* Control --auto-overlay feature. */
bfd/ * elf32-spu.c (struct spu_link_hash_table): Add init, line_size_log2, num_lines_log2. (struct got_entry): Add br_addr. (struct call_info): Add priority. (struct function_info): Add lr_store and sp_adjust. (spu_elf_setup): Init line_size_log2 and num_lines_log2. (spu_elf_find_overlays): For soft-icache, mark any section within cache area as an overlay, and check that no other overlays exist. Look up icache overlay manager entry sym. (BRA_STUBS, BRA, BRASL): Define. (enum _stub_type): Replace ovl_stub with call_ovl_stub and br*_ovl_stub. (needs_ovl_stub): Adjust for soft-icache. Return priority encoded in branch insn. (count_stub, build_stub): Support soft-icache. (build_spuear_stubs, process_stubs): Adjust build_stub call. (spu_elf_size_stubs): Size soft-icache stubs. (overlay_index): New function. (spu_elf_build_stubs): Make static. Support soft-icache. (spu_elf_check_vma): Don't turn off auto_overlay if soft-icache. (find_function_stack_adjust): Save lr store and stack adjust insn offsets. (maybe_insert_function): Adjust find_function_stack_adjust call. (mark_functions_via_relocs): Retrieve priority. (remove_cycles): Only warn about pruned arcs when stack_analysis. (sort_calls): Sort by priority first. (mark_overlay_section): Ignore .ovl.init. (sum_stack): Only print when stack_analysis. (print_one_overlay_section): New function, extracted from.. (spu_elf_auto_overlay): ..here. Support soft-icache overlays. (spu_elf_stack_analysis): Only print when htab->stack_analysis. (spu_elf_final_link): Call spu_elf_stack_analysis for lrlive analysis. Call spu_elf_build_stubs. (spu_elf_relocate_section): For soft-icache encode overlay index into addresses. (spu_elf_output_symbol_hook): Support soft-icache. (spu_elf_modify_program_headers: Likewise. * elf32-spu.h (struct spu_elf_params): Add lrlive_analysis. Rename num_regions to num_lines. Add line_size and max_branch. (enum _ovly_flavour): Add ovly_soft_icache. (spu_elf_build_stubs): Delete. gas/ * config/tc-spu.c (md_pseudo_table): Add "brinfo". (brinfo): New var. (md_assemble): Poke brinfo into branch instructions. (spu_brinfo): New function. (md_apply_fix): Don't assume insn fields start off at zero, mask them to remove possible brinfo. ld/ * emultempl/spuelf.em (params): Init new fields. (num_lines_set, line_size_set, icache_mgr, icache_mgr_stream): New vars. (spu_place_special_section): Adjust placement for soft-icache. Pad soft-icache section to a fixed size. Clear addr_tree. (spu_elf_load_ovl_mgr): Support soft-icache. Map overlay manager sections a little more intelligently. (gld${EMULATION_NAME}_finish): Don't call spu_elf_build_stubs. (OPTION_SPU_NUM_LINES): Rename from OPTION_SPU_NUM_REGIONS. (OPTION_SPU_SOFT_ICACHE, OPTION_SPU_LINE_SIZE): Define. (OPTION_SPU_LRLIVE): Define. (PARSE_AND_LIST_LONGOPTS): Add new soft-icache options. (PARSE_AND_LIST_OPTIONS): Likewise. (PARSE_AND_LIST_ARGS_CASES): Handle them. * emultempl/spu_icache.S: Dummy file. * emultempl/spu_icache.o_c: Regenerate. * Makefile.am (eelf32_spu.c): Depend on spu_icache.o_c. (spu_icache.o_c): Add rule to build. (CLEANFILES): Zap temp files. (EXTRA_DIST): Add spu_icache.o_c. * Makefile.in: Regenerate. ld/testsuite/ * ld-spu/ovl.d: Allow for absolute branches in stubs. * ld-spu/ovl2.d: Likewise.
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unsigned int num_lines;
unsigned int line_size;
unsigned int max_branch;
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unsigned int auto_overlay_fixed;
unsigned int auto_overlay_reserved;
int extra_stack_space;
};
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/* Extra info kept for SPU sections. */
bfd/ * elf32-spu.c (struct spu_link_hash_table): Add stack_analysis and emit_stack_syms bitfields. (get_sym_h): Read all symbols if stack analysis will be done. (spu_elf_create_sections): Add stack_analysis and emit_stack_syms params, and stash in hash table. (is_hint): Split off from.. (is_branch): ..here. Adjust callers. (spu_elf_size_stubs): Add stack_analysis param. Arrange to read and keep all syms. (write_one_stub): Fix mem leak. (find_function_stack_adjust): New function. (sort_syms_syms, sort_syms_psecs): New vars. (sort_syms): New function. (struct call_info, struct function_info): New. (struct spu_elf_stack_info): New. (alloc_stack_info, maybe_insert_function, func_name): New functions. (is_nop, insns_at_end, check_function_ranges): Likewise. (find_function, insert_callee, mark_functions_via_relocs): Likewise. (pasted_function, interesting_section, discover_functions): Likewise. (mark_non_root, call_graph_traverse, build_call_tree): Likewise. (sum_stack, spu_elf_stack_analysis, spu_elf_final_link): Likewise. (bfd_elf32_bfd_final_link): Define. * elf32-spu.h (struct _spu_elf_section_data): Add stack_info field. (spu_elf_create_sections, spu_elf_size_stubs): Update prototypes. include/ * bfdlink.h (struct bfd_link_info): Add "info" and "minfo". ld/ * ldmain.c (link_callbacks): Init info and minfo fields. * ldmisc.c (minfo): Do nothing if no map file. * emultempl/spuelf.em (stack_analysis, emit_stack_syms): New vars. (spu_after_open): Adjust spu_elf_create_sections call. (spu_before_allocation): Likewise for spu_elf_size_stubs. (OPTION_SPU_STACK_ANALYSIS, OPTION_SPU_STACK_SYMS): Define. (PARSE_AND_LIST_LONGOPTS): Add new entries. (PARSE_AND_LIST_OPTIONS, PARSE_AND_LIST_ARGS_CASES): Likewise. * gen-doc.texi: Add @set for SPU and other missing targets. * ld.texinfo: Update man page selection to match gen-doc.texi. Document SPU features.
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struct spu_elf_stack_info;
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struct _spu_elf_section_data
{
struct bfd_elf_section_data elf;
union {
/* Info kept for input sections. */
struct {
/* Stack analysis info kept for this section. */
struct spu_elf_stack_info *stack_info;
} i;
bfd/ * elf32-spu.c (struct spu_link_hash_table): Add stack_analysis and emit_stack_syms bitfields. (get_sym_h): Read all symbols if stack analysis will be done. (spu_elf_create_sections): Add stack_analysis and emit_stack_syms params, and stash in hash table. (is_hint): Split off from.. (is_branch): ..here. Adjust callers. (spu_elf_size_stubs): Add stack_analysis param. Arrange to read and keep all syms. (write_one_stub): Fix mem leak. (find_function_stack_adjust): New function. (sort_syms_syms, sort_syms_psecs): New vars. (sort_syms): New function. (struct call_info, struct function_info): New. (struct spu_elf_stack_info): New. (alloc_stack_info, maybe_insert_function, func_name): New functions. (is_nop, insns_at_end, check_function_ranges): Likewise. (find_function, insert_callee, mark_functions_via_relocs): Likewise. (pasted_function, interesting_section, discover_functions): Likewise. (mark_non_root, call_graph_traverse, build_call_tree): Likewise. (sum_stack, spu_elf_stack_analysis, spu_elf_final_link): Likewise. (bfd_elf32_bfd_final_link): Define. * elf32-spu.h (struct _spu_elf_section_data): Add stack_info field. (spu_elf_create_sections, spu_elf_size_stubs): Update prototypes. include/ * bfdlink.h (struct bfd_link_info): Add "info" and "minfo". ld/ * ldmain.c (link_callbacks): Init info and minfo fields. * ldmisc.c (minfo): Do nothing if no map file. * emultempl/spuelf.em (stack_analysis, emit_stack_syms): New vars. (spu_after_open): Adjust spu_elf_create_sections call. (spu_before_allocation): Likewise for spu_elf_size_stubs. (OPTION_SPU_STACK_ANALYSIS, OPTION_SPU_STACK_SYMS): Define. (PARSE_AND_LIST_LONGOPTS): Add new entries. (PARSE_AND_LIST_OPTIONS, PARSE_AND_LIST_ARGS_CASES): Likewise. * gen-doc.texi: Add @set for SPU and other missing targets. * ld.texinfo: Update man page selection to match gen-doc.texi. Document SPU features.
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/* Info kept for output sections. */
struct {
/* Non-zero for overlay output sections. */
unsigned int ovl_index;
unsigned int ovl_buf;
} o;
} u;
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};
#define spu_elf_section_data(sec) \
((struct _spu_elf_section_data *) elf_section_data (sec))
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enum _ovly_flavour
{
ovly_normal,
ovly_soft_icache
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};
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struct _ovl_stream
{
const void *start;
const void *end;
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};
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extern void spu_elf_setup (struct bfd_link_info *, struct spu_elf_params *);
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extern void spu_elf_plugin (int);
extern bfd_boolean spu_elf_open_builtin_lib (bfd **,
const struct _ovl_stream *);
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extern bfd_boolean spu_elf_create_sections (struct bfd_link_info *);
extern bfd_boolean spu_elf_size_sections (bfd *, struct bfd_link_info *);
extern int spu_elf_find_overlays (struct bfd_link_info *);
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extern int spu_elf_size_stubs (struct bfd_link_info *);
extern void spu_elf_place_overlay_data (struct bfd_link_info *);
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extern asection *spu_elf_check_vma (struct bfd_link_info *);