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The specification for the Compact EH format is available at: https://github.com/MentorEmbedded/cxx-abi/blob/master/MIPSCompactEH.pdf 2015-05-28 Catherine Moore <clm@codesourcery.com> Bernd Schmidt <bernds@codesourcery.com> Paul Brook <paul@codesourcery.com> bfd/ * bfd-in2.h: Regenerated. * elf-bfd.h (DWARF2_EH_HDR, COMPACT_EH_HDR): Define. (COMPACT_EH_CANT_UNWIND_OPCODE): Define. (dwarf_eh_frame_hdr_info): Move dwarf-specific fields from eh_frame_hdr_info. (compact_eh_frame_hdr_info): Declare. (eh_frame_hdr_info): Redeclare with union for dwarf-specific fields and compact-eh fields. (elf_backend_data): Add cant_unwind_opcode and compact_eh_encoding. (bfd_elf_section_data): Add eh_frame_entry_field. (elf_section_eh_frame_entry): Define. (bfd_elf_parse_eh_frame_entries): Declare. (_bfd_elf_parse_eh_frame_entry): Declare. (_bfd_elf_end_eh_frame_parsing): Declare. (_bfd_elf_write_section_eh_frame_entry): Declare. (_bfd_elf_eh_frame_entry_present): Declare. (_bfd_elf_section_for_symbol): Declare. * elf-eh-frame.c (bfd_elf_discard_eh_frame_entry): New function. (bfd_elf_record_eh_frame_entry): New function. (_bfd_elf_parse_eh_frame_entry): New function. (_bfd_elf_parse_eh_frame): Update hdr_info field references. (cmp_eh_frame_hdr): New function. (add_eh_frame_hdr_terminator): New function. (_bfd_elf_end_eh_frame_parsing): New function. (find_merged_cie): Update hdr_info field references. (_bfd_elf_discard_section_eh_frame): Likewise. (_bfd_elf_discard_section_eh_frame_hdr): Add Compact EH support. (_bfd_elf_eh_frame_entry_present): New function. (_bfd_elf_maybe_strip_eh_frame_hdr): Add Compact EH support. (_bfd_elf_write_section_eh_frame_entry): New function. (_bfd_elf_write_section_eh_frame): Update hdr_info field references. (_bfd_elf_fixup_eh_frame_hdr): New function. (write_compact_eh_frame_hdr): New function. (write_dwarf_eh_frame_hdr): New function. (_bfd_elf_write_section_eh_frame_hdr): Add Compact EH support. * elflink.c (_bfd_elf_section_for_symbol): New function. (elf_section_ignore_discarded_relocs): Add Compact EH support. (elf_link_input_bfd): Likewise. (bfd_elf_final_link): Likewise. (_bfd_elf_gc_mark): Likewise. (bfd_elf_parse_eh_frame_entries): New function. (bfd_elf_gc_sections): Add Compact EH support. (bfd_elf_discard_info): Likewise. * elfxx-mips.c: Include dwarf2.h. (_bfd_mips_elf_compact_eh_encoding): New function. (_bfd_mips_elf_cant_unwind_opcode): New function. * elfxx-mips.h (_bfd_mips_elf_compact_eh_encoding): Declare. (_bfd_mips_elf_cant_unwind_opcode): Declare. (elf_backend_compact_eh_encoding): Define. (elf_backend_cant_unwind_opcode): Define. * elfxx-target.h (elf_backend_compact_eh_encoding): Provide default. (elf_backend_cant_unwind_opcode): Provide default. (elf_backend_data elfNN_bed): Add elf_backend_compact_eh_encoding and elf_backend_cant_unwind_opcode. * section.c (SEC_INFO_TYPE_EH_FRAME_ENTRY): Add definition. gas/ * config/tc-alpha.c (all_cfi_sections): Declare. (s_alpha_ent): Initialize all_cfi_sections. (alpha_elf_md_end): Invoke cfi_set_sections. * config/tc-mips.c (md_apply_fix): Handle BFD_RELOC_NONE. (s_ehword): Use BFD_RELOC_32_PCREL. (mips_fix_adjustable): Handle BFD_RELOC_32_PCREL. (mips_cfi_reloc_for_encoding): New function. * tc-mips.h (DWARF2_FDE_RELOC_SIZE): Redefine. (DWARF2_FDE_RELOC_ENCODING): Define. (tc_cfi_reloc_for_encoding): Define. (mips_cfi_reloc_for_encoding): Define. (tc_compact_eh_opcode_stop): Define. (tc_compact_eh_opcode_pad): Define. * doc/as.texinfo: Document Compact EH extensions. * doc/internals.texi: Likewise. * dw2gencfi.c (EH_FRAME_LINKONCE): Redefine. (tc_cfi_reloc_for_encoding): Provide default. (compact_eh): Declare. (emit_expr_encoded): New function. (get_debugseg_name): Add Compact EH support. (alloc_debugseg_item): Likewise. (cfi_set_sections): New function. (dot_cfi_fde_data): New function. (dot_cfi_personality_id): New function. (dot_cfi_inline_lsda): New function. (cfi_pseudo_table): Add cfi_fde_data, cfi_personality_id, and cfi_inline_lsda. (dot_cfi_personality): Add Compact EH support. (dot_cfi_lsda): Likewise. (dot_cfi_sections): Likewise. (dot_cfi_startproc): Likewise. (get_cfi_seg): Likewise. (output_compact_unwind_data): New function. (output_cfi_insn): Add Compact EH support. (output_cie): Likewise. (output_fde): Likewise. (cfi_finish): Likewise. (cfi_emit_eh_header): New function. (output_eh_header): New function. * dw2gencfi.h (cfi_set_sections): Declare. (SUPPORT_COMPACT_EH): Define. (MULTIPLE_FRAME_SECTIONS): Define. New enumeration to describe the Compact EH header format. (fde_entry): Add new fields personality_id, eh_header_type, eh_data_size, eh_data, eh_loc and sections. (CFI_EMIT_eh_frame, CFI_EMIT_debug_frame, CFI_EMIT_target, CFI_EMIT_eh_frame_compact): Define. 2015-05-22 Catherine Moore <clm@codesourcery.com> Bernd Schmidt <bernds@codesourcery.com> gas/testsuite/ * gas/mips/mips.exp: Run new tests. * gas/mips/compact-eh-1.s: New file. * gas/mips/compact-eh-2.s: New file. * gas/mips/compact-eh-3.s: New file. * gas/mips/compact-eh-4.s: New file. * gas/mips/compact-eh-5.s: New file. * gas/mips/compact-eh-6.s: New file. * gas/mips/compact-eh-7.s: New file. * gas/mips/compact-eh-eb-1.d: New file. * gas/mips/compact-eh-eb-2.d: New file. * gas/mips/compact-eh-eb-3.d: New file. * gas/mips/compact-eh-eb-4.d: New file. * gas/mips/compact-eh-eb-5.d: New file. * gas/mips/compact-eh-eb-6.d: New file. * gas/mips/compact-eh-eb-7.d: New file. * gas/mips/compact-eh-el-1.d: New file. * gas/mips/compact-eh-el-2.d: New file. * gas/mips/compact-eh-el-3.d: New file. * gas/mips/compact-eh-el-4.d: New file. * gas/mips/compact-eh-el-5.d: New file. * gas/mips/compact-eh-el-6.d: New file. * gas/mips/compact-eh-el-7.d: New file. * gas/mips/compact-eh-err1.l: New file. * gas/mips/compact-eh-err1.s: New file. * gas/mips/compact-eh-err2.l: New file. * gas/mips/compact-eh-err2.s: New file. 2015-05-22 Catherine Moore <clm@codesourcery.com> include/ * bfdlink.h: Rename eh_frame_hdr to eh_frame_hdr_type. 2015-05-22 Catherine Moore <clm@codesourcery.com> Paul Brook <paul@codesourcery.com> ld/ * emultempl/elf32.em (gld${EMULATION_NAME}_after_open): Add Compact EH support. * scripttempl/elf.sc: Handle .eh_frame_entry and .gnu_extab sections. 2015-05-22 Catherine Moore <clm@codesourcery.com> ld/testsuite/ * ld-mips-elf/compact-eh.ld: New linker script. * ld-mips-elf/compact-eh1.d: New. * ld-mips-elf/compact-eh1.s: New. * ld-mips-elf/compact-eh1a.s: New. * ld-mips-elf/compact-eh1b.s: New. * ld-mips-elf/compact-eh2.d: New. * ld-mips-elf/compact-eh2.s: New. * ld-mips-elf/compact-eh3.d: New. * ld-mips-elf/compact-eh3.s: New. * ld-mips-elf/compact-eh3a.s: New. * ld-mips-elf/compact-eh4.d: New. * ld-mips-elf/compact-eh5.d: New. * ld-mips-elf/compact-eh6.d: New. * ld-mips-elf/mips-elf.exp: Run new tests.
199 lines
8.6 KiB
C
199 lines
8.6 KiB
C
/* MIPS ELF specific backend routines.
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Copyright (C) 2002-2015 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
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "elf/common.h"
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#include "elf/internal.h"
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#include "elf/mips.h"
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extern bfd_boolean _bfd_mips_elf_mkobject
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(bfd *);
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extern bfd_boolean _bfd_mips_elf_new_section_hook
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(bfd *, asection *);
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extern void _bfd_mips_elf_symbol_processing
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(bfd *, asymbol *);
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extern unsigned int _bfd_mips_elf_eh_frame_address_size
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(bfd *, asection *);
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extern bfd_boolean _bfd_mips_elf_name_local_section_symbols
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(bfd *);
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extern bfd_boolean _bfd_mips_elf_section_processing
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(bfd *, Elf_Internal_Shdr *);
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extern bfd_boolean _bfd_mips_elf_section_from_shdr
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(bfd *, Elf_Internal_Shdr *, const char *, int);
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extern bfd_boolean _bfd_mips_elf_fake_sections
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(bfd *, Elf_Internal_Shdr *, asection *);
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extern bfd_boolean _bfd_mips_elf_section_from_bfd_section
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(bfd *, asection *, int *);
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extern bfd_boolean _bfd_mips_elf_add_symbol_hook
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(bfd *, struct bfd_link_info *, Elf_Internal_Sym *,
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const char **, flagword *, asection **, bfd_vma *);
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extern int _bfd_mips_elf_link_output_symbol_hook
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(struct bfd_link_info *, const char *, Elf_Internal_Sym *,
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asection *, struct elf_link_hash_entry *);
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extern bfd_boolean _bfd_mips_elf_create_dynamic_sections
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(bfd *, struct bfd_link_info *);
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extern bfd_boolean _bfd_mips_elf_check_relocs
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(bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
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extern bfd_boolean _bfd_mips_elf_adjust_dynamic_symbol
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(struct bfd_link_info *, struct elf_link_hash_entry *);
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extern bfd_boolean _bfd_mips_elf_always_size_sections
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(bfd *, struct bfd_link_info *);
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extern bfd_boolean _bfd_mips_elf_size_dynamic_sections
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(bfd *, struct bfd_link_info *);
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extern bfd_boolean _bfd_mips_elf_relocate_section
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(bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
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Elf_Internal_Rela *, Elf_Internal_Sym *, asection **);
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extern bfd_boolean _bfd_mips_elf_finish_dynamic_symbol
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(bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
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Elf_Internal_Sym *);
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extern bfd_boolean _bfd_mips_vxworks_finish_dynamic_symbol
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(bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
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Elf_Internal_Sym *);
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extern bfd_boolean _bfd_mips_elf_finish_dynamic_sections
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(bfd *, struct bfd_link_info *);
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extern bfd_boolean _bfd_mips_elf_sort_relocs_p
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(asection *);
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extern void _bfd_mips_elf_final_write_processing
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(bfd *, bfd_boolean);
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extern int _bfd_mips_elf_additional_program_headers
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(bfd *, struct bfd_link_info *);
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extern bfd_boolean _bfd_mips_elf_modify_segment_map
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(bfd *, struct bfd_link_info *);
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extern asection * _bfd_mips_elf_gc_mark_hook
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(asection *, struct bfd_link_info *, Elf_Internal_Rela *,
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struct elf_link_hash_entry *, Elf_Internal_Sym *);
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extern bfd_boolean _bfd_mips_elf_gc_sweep_hook
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(bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
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extern void _bfd_mips_elf_copy_indirect_symbol
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(struct bfd_link_info *, struct elf_link_hash_entry *,
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struct elf_link_hash_entry *);
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extern bfd_boolean _bfd_mips_elf_ignore_discarded_relocs
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(asection *);
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extern bfd_boolean _bfd_mips_elf_is_target_special_symbol
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(bfd *abfd, asymbol *sym);
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extern bfd_boolean _bfd_mips_elf_find_nearest_line
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(bfd *, asymbol **, asection *, bfd_vma,
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const char **, const char **, unsigned int *, unsigned int *);
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extern bfd_boolean _bfd_mips_elf_find_inliner_info
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(bfd *, const char **, const char **, unsigned int *);
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extern bfd_boolean _bfd_mips_elf_set_section_contents
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(bfd *, asection *, const void *, file_ptr, bfd_size_type);
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extern bfd_byte *_bfd_elf_mips_get_relocated_section_contents
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(bfd *, struct bfd_link_info *, struct bfd_link_order *,
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bfd_byte *, bfd_boolean, asymbol **);
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extern bfd_boolean _bfd_mips_elf_relax_section
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(bfd *abfd, asection *sec, struct bfd_link_info *link_info,
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bfd_boolean *again);
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extern struct bfd_link_hash_table *_bfd_mips_elf_link_hash_table_create
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(bfd *);
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extern struct bfd_link_hash_table *_bfd_mips_vxworks_link_hash_table_create
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(bfd *);
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extern bfd_boolean _bfd_mips_elf_final_link
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(bfd *, struct bfd_link_info *);
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extern bfd_boolean _bfd_mips_elf_merge_private_bfd_data
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(bfd *, bfd *);
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extern bfd_boolean _bfd_mips_elf_set_private_flags
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(bfd *, flagword);
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extern const char * _bfd_mips_fp_abi_string
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(int);
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extern bfd_boolean _bfd_mips_elf_print_private_bfd_data
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(bfd *, void *);
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extern bfd_boolean _bfd_mips_elf_discard_info
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(bfd *, struct elf_reloc_cookie *, struct bfd_link_info *);
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extern bfd_boolean _bfd_mips_elf_write_section
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(bfd *, struct bfd_link_info *, asection *, bfd_byte *);
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extern bfd_boolean _bfd_mips_elf_read_ecoff_info
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(bfd *, asection *, struct ecoff_debug_info *);
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extern void _bfd_mips_elf_reloc_unshuffle
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(bfd *, int, bfd_boolean, bfd_byte *);
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extern void _bfd_mips_elf_reloc_shuffle
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(bfd *, int, bfd_boolean, bfd_byte *);
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extern bfd_reloc_status_type _bfd_mips_elf_gprel16_with_gp
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(bfd *, asymbol *, arelent *, asection *, bfd_boolean, void *, bfd_vma);
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extern bfd_reloc_status_type _bfd_mips_elf32_gprel16_reloc
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(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
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extern bfd_reloc_status_type _bfd_mips_elf_hi16_reloc
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(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
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extern bfd_reloc_status_type _bfd_mips_elf_got16_reloc
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(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
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extern bfd_reloc_status_type _bfd_mips_elf_lo16_reloc
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(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
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extern bfd_reloc_status_type _bfd_mips_elf_generic_reloc
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(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
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extern unsigned long _bfd_elf_mips_mach
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(flagword);
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extern bfd_boolean _bfd_mips_relax_section
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(bfd *, asection *, struct bfd_link_info *, bfd_boolean *);
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extern bfd_vma _bfd_mips_elf_sign_extend
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(bfd_vma, int);
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extern void _bfd_mips_elf_merge_symbol_attribute
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(struct elf_link_hash_entry *, const Elf_Internal_Sym *, bfd_boolean, bfd_boolean);
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extern char *_bfd_mips_elf_get_target_dtag (bfd_vma);
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extern bfd_boolean _bfd_mips_elf_ignore_undef_symbol
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(struct elf_link_hash_entry *);
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extern void _bfd_mips_elf_use_plts_and_copy_relocs
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(struct bfd_link_info *);
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extern void _bfd_mips_elf_insn32
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(struct bfd_link_info *, bfd_boolean);
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extern bfd_boolean _bfd_mips_elf_init_stubs
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(struct bfd_link_info *,
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asection *(*) (const char *, asection *, asection *));
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extern bfd_vma _bfd_mips_elf_plt_sym_val
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(bfd_vma, const asection *, const arelent *rel);
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extern long _bfd_mips_elf_get_synthetic_symtab
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(bfd *, long, asymbol **, long, asymbol **, asymbol **);
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extern bfd_boolean _bfd_mips_elf_gc_mark_extra_sections
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(struct bfd_link_info *, elf_gc_mark_hook_fn);
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extern void _bfd_mips_post_process_headers
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(bfd *abfd, struct bfd_link_info *link_info);
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extern const struct bfd_elf_special_section _bfd_mips_elf_special_sections [];
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extern bfd_boolean _bfd_mips_elf_common_definition (Elf_Internal_Sym *);
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extern int _bfd_mips_elf_compact_eh_encoding (struct bfd_link_info *);
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extern int _bfd_mips_elf_cant_unwind_opcode (struct bfd_link_info *);
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static inline bfd_boolean
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gprel16_reloc_p (unsigned int r_type)
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{
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return (r_type == R_MIPS_GPREL16
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|| r_type == R_MIPS16_GPREL
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|| r_type == R_MICROMIPS_GPREL16
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|| r_type == R_MICROMIPS_GPREL7_S2);
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}
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static inline bfd_boolean
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literal_reloc_p (int r_type)
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{
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return r_type == R_MIPS_LITERAL || r_type == R_MICROMIPS_LITERAL;
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}
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#define elf_backend_common_definition _bfd_mips_elf_common_definition
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#define elf_backend_name_local_section_symbols \
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_bfd_mips_elf_name_local_section_symbols
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#define elf_backend_special_sections _bfd_mips_elf_special_sections
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#define elf_backend_eh_frame_address_size _bfd_mips_elf_eh_frame_address_size
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#define elf_backend_merge_symbol_attribute _bfd_mips_elf_merge_symbol_attribute
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#define elf_backend_ignore_undef_symbol _bfd_mips_elf_ignore_undef_symbol
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#define elf_backend_post_process_headers _bfd_mips_post_process_headers
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#define elf_backend_compact_eh_encoding _bfd_mips_elf_compact_eh_encoding
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#define elf_backend_cant_unwind_opcode _bfd_mips_elf_cant_unwind_opcode
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