cd4a7468c9
* 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.
117 lines
3.4 KiB
C
117 lines
3.4 KiB
C
/* SPU specific support for 32-bit ELF.
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Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
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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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the Free Software Foundation; either version 3 of the License, or
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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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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 lr liveness analysis should be done. */
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unsigned int lrlive_analysis : 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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unsigned int num_lines;
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unsigned int line_size;
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unsigned int max_branch;
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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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/* Extra info kept for SPU sections. */
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struct spu_elf_stack_info;
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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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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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/* 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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};
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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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enum _ovly_flavour
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{
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ovly_compact,
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ovly_normal,
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ovly_soft_icache,
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ovly_none
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};
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struct _ovl_stream
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{
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const void *start;
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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);
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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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extern bfd_boolean spu_elf_create_sections (struct bfd_link_info *);
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extern bfd_boolean spu_elf_find_overlays (struct bfd_link_info *);
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extern int spu_elf_size_stubs (struct bfd_link_info *);
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extern asection *spu_elf_check_vma (struct bfd_link_info *);
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