2006-10-25 08:49:21 +02:00
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/* SPU specific support for 32-bit ELF.
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2008-03-20 06:35:10 +01:00
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Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
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2006-10-25 08:49:21 +02:00
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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2007-07-03 16:26:43 +02:00
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the Free Software Foundation; either version 3 of the License, or
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2006-10-25 08:49:21 +02:00
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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2008-12-10 07:32:52 +01:00
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struct spu_elf_params
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{
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/* Stash various callbacks for --auto-overlay. */
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void (*place_spu_section) (asection *, asection *, const char *);
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bfd_size_type (*spu_elf_load_ovl_mgr) (void);
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FILE *(*spu_elf_open_overlay_script) (void);
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void (*spu_elf_relink) (void);
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/* Bit 0 set if --auto-overlay.
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Bit 1 set if --auto-relink.
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Bit 2 set if --overlay-rodata. */
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unsigned int auto_overlay : 3;
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#define AUTO_OVERLAY 1
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#define AUTO_RELINK 2
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#define OVERLAY_RODATA 4
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/* Type of overlays, enum _ovly_flavour. */
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unsigned int ovly_flavour : 2;
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/* Set if we should emit symbols for stubs. */
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unsigned int emit_stub_syms : 1;
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/* Set if we want stubs on calls out of overlay regions to
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non-overlay regions. */
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unsigned int non_overlay_stubs : 1;
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/* Set if stack size analysis should be done. */
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unsigned int stack_analysis : 1;
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/* Set if __stack_* syms will be emitted. */
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unsigned int emit_stack_syms : 1;
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/* Range of valid addresses for loadable sections. */
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bfd_vma local_store_lo;
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bfd_vma local_store_hi;
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/* Control --auto-overlay feature. */
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2008-12-10 14:36:41 +01:00
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unsigned int num_regions;
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2008-12-10 07:32:52 +01:00
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unsigned int auto_overlay_fixed;
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unsigned int auto_overlay_reserved;
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int extra_stack_space;
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};
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2006-10-25 08:49:21 +02:00
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/* Extra info kept for SPU sections. */
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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.
2007-04-30 16:06:40 +02:00
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struct spu_elf_stack_info;
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2006-10-25 08:49:21 +02:00
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struct _spu_elf_section_data
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{
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struct bfd_elf_section_data elf;
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2008-01-28 06:59:24 +01:00
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union {
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/* Info kept for input sections. */
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struct {
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/* Stack analysis info kept for this section. */
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struct spu_elf_stack_info *stack_info;
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} i;
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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.
2007-04-30 16:06:40 +02:00
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2008-01-28 06:59:24 +01:00
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/* Info kept for output sections. */
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struct {
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/* Non-zero for overlay output sections. */
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unsigned int ovl_index;
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unsigned int ovl_buf;
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} o;
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} u;
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2006-10-25 08:49:21 +02:00
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};
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#define spu_elf_section_data(sec) \
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((struct _spu_elf_section_data *) elf_section_data (sec))
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2008-12-10 07:32:52 +01:00
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enum _ovly_flavour
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{
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ovly_compact,
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ovly_normal,
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ovly_none
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};
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2006-10-25 08:49:21 +02:00
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struct _ovl_stream
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{
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2007-02-27 09:29:52 +01:00
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const void *start;
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const void *end;
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2006-10-25 08:49:21 +02:00
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};
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2008-12-10 07:32:52 +01:00
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extern void spu_elf_setup (struct bfd_link_info *, struct spu_elf_params *);
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2006-10-25 08:49:21 +02:00
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extern void spu_elf_plugin (int);
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extern bfd_boolean spu_elf_open_builtin_lib (bfd **,
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const struct _ovl_stream *);
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2008-12-10 07:32:52 +01:00
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extern bfd_boolean spu_elf_create_sections (struct bfd_link_info *);
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2008-03-20 06:35:10 +01:00
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extern bfd_boolean spu_elf_find_overlays (struct bfd_link_info *);
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2008-12-10 07:32:52 +01:00
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extern int spu_elf_size_stubs (struct bfd_link_info *);
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extern bfd_boolean spu_elf_build_stubs (struct bfd_link_info *);
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extern asection *spu_elf_check_vma (struct bfd_link_info *);
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