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4fbb74a605
PR 5900 * common.h (SHN_BAD): Delete. (SHN_LORESERVE .. SHN_HIRESERVE): Move to.. * external.h: ..here. * internal.h (SHN_LORESERVE, SHN_HIRESERVE): Define. (SHN_LOPROC, SHN_HIPROC, SHN_LOOS, SHN_HIOS): Define. (SHN_ABS, SHN_COMMON, SHN_XINDEX, SHN_BAD): Define. bfd/ PR 5900 * elf-bfd.h: Include elf/internal.h after elf/external.h. * elfcode.h (elf_swap_symbol_in): Map reserved shndx range. (elf_swap_symbol_out): Adjust SHN_XINDEX test. (elf_swap_ehdr_out): Mask SHN_LORESERVE and SHN_XINDEX to values seen in external structs. (valid_section_index_p): Delete. (elf_object_p): Don't increment section numbers over reserved range. Simplify test for valid sh_link, sh_info and e_shstrndx fields. (elf_write_shdrs_and_ehdr): Mask SHN_LORESERVE and SHN_XINDEX to values seen in external structs. Don't increment section numbers over reserved range. * elf.c (bfd_elf_sym_name): Remove redundant tests on st_shndx. (bfd_section_from_shdr): Likewise. (group_signature): Range check before accessing elf_elfsections. (_bfd_elf_setup_sections): Likewise. (bfd_section_from_shdr): Likewise. (bfd_section_from_shdr): Don't increment section number over reserved sections. (assign_file_positions_for_non_load_sections): Likewise. (assign_file_positions_except_relocs): Likewise. (_bfd_elf_write_object_contents): Likewise. (assign_section_numbers): Likewise. Adjust for changed SHN_*. (prep_headers): Delete unused variable. * elflink.c (bfd_elf_link_record_local_dynamic_symbol): Adjust for changed SHN_* values. (check_dynsym, elf_link_input_bfd): Likewise. (bfd_elf_final_link): Likewise. Don't skip over reserved section range. (elf_fixup_link_order): Check that sh_link field is valid. * elf-hppa.h (elf_hppa_add_symbol_hook): Make "index" unsigned. * elf32-arm.c (elf32_arm_gc_mark_extra_sections): Range check before accesssing elf_elfsections. * elf32-avr.c (elf32_avr_size_stubs): Likewise. * elf32-hppa.c (elf32_hppa_size_stubs): Likewise. * elf32-m68hc1x.c (elf32_m68hc11_size_stubs): Likewise. * elf64-hppa.c (elf64_hppa_check_relocs): Adjust for changed SHN_* defines. Test for SHN_BAD return from _bfd_elf_section_from_bfd_section binutils/ PR 5900 * readelf.c (SECTION_HEADER_INDEX, SECTION_HEADER_NUM): Delete. Remove use throughout file. (SECTION_HEADER): Likewise. (dump_relocations): Don't adjust st_shndx for reserved range. (process_file_header): Mask SHN_XINDEX to values seen in external elf structs. Simplify valid section index tests. (get_32bit_elf_symbols, get_64bit_elf_symbols): Mask SHN_XINDEX. Map reserved st_shndx to internal form. (process_section_groups): Test that group symbol st_shndx is in range, not just non-zero. Delete reserved range check. (get_symbol_index_type): Mask "type" to 16 bits when printing PRC, OS or RSV. gdb/ PR 5900 * elfread.c (elf_symtab_read): Make shndx an unsigned int. * mipsread.c: Include elf/internal.h. (read_alphacoff_dynamic_symtab): Map external reserved sym_shndx to internal range. ld/testsuite/ PR 5900 * ld-elf/sec64k.exp: Update.
289 lines
11 KiB
C
289 lines
11 KiB
C
/* ELF support for BFD.
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Copyright 1991, 1992, 1993, 1995, 1997, 1998, 1999, 2001, 2003, 2005,
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2008 Free Software Foundation, Inc.
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Written by Fred Fish @ Cygnus Support, from information published
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in "UNIX System V Release 4, Programmers Guide: ANSI C and
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Programming Support Tools".
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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 2 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, MA 02110-1301, USA. */
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/* This file is part of ELF support for BFD, and contains the portions
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that describe how ELF is represented externally by the BFD library.
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I.E. it describes the in-file representation of ELF. It requires
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the elf/common.h file which contains the portions that are common to
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both the internal and external representations. */
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/* The 64-bit stuff is kind of random. Perhaps someone will publish a
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spec someday. */
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#ifndef _ELF_EXTERNAL_H
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#define _ELF_EXTERNAL_H
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/* Special section indices, which may show up in st_shndx fields, among
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other places. */
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#define SHN_LORESERVE 0xFF00 /* Begin range of reserved indices */
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#define SHN_LOPROC 0xFF00 /* Begin range of appl-specific */
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#define SHN_HIPROC 0xFF1F /* End range of appl-specific */
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#define SHN_LOOS 0xFF20 /* OS specific semantics, lo */
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#define SHN_HIOS 0xFF3F /* OS specific semantics, hi */
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#define SHN_ABS 0xFFF1 /* Associated symbol is absolute */
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#define SHN_COMMON 0xFFF2 /* Associated symbol is in common */
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#define SHN_XINDEX 0xFFFF /* Section index is held elsewhere */
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#define SHN_HIRESERVE 0xFFFF /* End range of reserved indices */
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/* ELF Header (32-bit implementations) */
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typedef struct {
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unsigned char e_ident[16]; /* ELF "magic number" */
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unsigned char e_type[2]; /* Identifies object file type */
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unsigned char e_machine[2]; /* Specifies required architecture */
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unsigned char e_version[4]; /* Identifies object file version */
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unsigned char e_entry[4]; /* Entry point virtual address */
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unsigned char e_phoff[4]; /* Program header table file offset */
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unsigned char e_shoff[4]; /* Section header table file offset */
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unsigned char e_flags[4]; /* Processor-specific flags */
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unsigned char e_ehsize[2]; /* ELF header size in bytes */
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unsigned char e_phentsize[2]; /* Program header table entry size */
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unsigned char e_phnum[2]; /* Program header table entry count */
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unsigned char e_shentsize[2]; /* Section header table entry size */
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unsigned char e_shnum[2]; /* Section header table entry count */
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unsigned char e_shstrndx[2]; /* Section header string table index */
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} Elf32_External_Ehdr;
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typedef struct {
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unsigned char e_ident[16]; /* ELF "magic number" */
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unsigned char e_type[2]; /* Identifies object file type */
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unsigned char e_machine[2]; /* Specifies required architecture */
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unsigned char e_version[4]; /* Identifies object file version */
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unsigned char e_entry[8]; /* Entry point virtual address */
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unsigned char e_phoff[8]; /* Program header table file offset */
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unsigned char e_shoff[8]; /* Section header table file offset */
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unsigned char e_flags[4]; /* Processor-specific flags */
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unsigned char e_ehsize[2]; /* ELF header size in bytes */
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unsigned char e_phentsize[2]; /* Program header table entry size */
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unsigned char e_phnum[2]; /* Program header table entry count */
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unsigned char e_shentsize[2]; /* Section header table entry size */
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unsigned char e_shnum[2]; /* Section header table entry count */
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unsigned char e_shstrndx[2]; /* Section header string table index */
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} Elf64_External_Ehdr;
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/* Program header */
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typedef struct {
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unsigned char p_type[4]; /* Identifies program segment type */
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unsigned char p_offset[4]; /* Segment file offset */
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unsigned char p_vaddr[4]; /* Segment virtual address */
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unsigned char p_paddr[4]; /* Segment physical address */
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unsigned char p_filesz[4]; /* Segment size in file */
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unsigned char p_memsz[4]; /* Segment size in memory */
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unsigned char p_flags[4]; /* Segment flags */
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unsigned char p_align[4]; /* Segment alignment, file & memory */
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} Elf32_External_Phdr;
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typedef struct {
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unsigned char p_type[4]; /* Identifies program segment type */
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unsigned char p_flags[4]; /* Segment flags */
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unsigned char p_offset[8]; /* Segment file offset */
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unsigned char p_vaddr[8]; /* Segment virtual address */
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unsigned char p_paddr[8]; /* Segment physical address */
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unsigned char p_filesz[8]; /* Segment size in file */
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unsigned char p_memsz[8]; /* Segment size in memory */
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unsigned char p_align[8]; /* Segment alignment, file & memory */
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} Elf64_External_Phdr;
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/* Section header */
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typedef struct {
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unsigned char sh_name[4]; /* Section name, index in string tbl */
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unsigned char sh_type[4]; /* Type of section */
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unsigned char sh_flags[4]; /* Miscellaneous section attributes */
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unsigned char sh_addr[4]; /* Section virtual addr at execution */
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unsigned char sh_offset[4]; /* Section file offset */
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unsigned char sh_size[4]; /* Size of section in bytes */
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unsigned char sh_link[4]; /* Index of another section */
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unsigned char sh_info[4]; /* Additional section information */
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unsigned char sh_addralign[4]; /* Section alignment */
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unsigned char sh_entsize[4]; /* Entry size if section holds table */
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} Elf32_External_Shdr;
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typedef struct {
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unsigned char sh_name[4]; /* Section name, index in string tbl */
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unsigned char sh_type[4]; /* Type of section */
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unsigned char sh_flags[8]; /* Miscellaneous section attributes */
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unsigned char sh_addr[8]; /* Section virtual addr at execution */
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unsigned char sh_offset[8]; /* Section file offset */
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unsigned char sh_size[8]; /* Size of section in bytes */
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unsigned char sh_link[4]; /* Index of another section */
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unsigned char sh_info[4]; /* Additional section information */
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unsigned char sh_addralign[8]; /* Section alignment */
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unsigned char sh_entsize[8]; /* Entry size if section holds table */
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} Elf64_External_Shdr;
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/* Symbol table entry */
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typedef struct {
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unsigned char st_name[4]; /* Symbol name, index in string tbl */
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unsigned char st_value[4]; /* Value of the symbol */
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unsigned char st_size[4]; /* Associated symbol size */
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unsigned char st_info[1]; /* Type and binding attributes */
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unsigned char st_other[1]; /* No defined meaning, 0 */
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unsigned char st_shndx[2]; /* Associated section index */
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} Elf32_External_Sym;
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typedef struct {
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unsigned char st_name[4]; /* Symbol name, index in string tbl */
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unsigned char st_info[1]; /* Type and binding attributes */
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unsigned char st_other[1]; /* No defined meaning, 0 */
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unsigned char st_shndx[2]; /* Associated section index */
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unsigned char st_value[8]; /* Value of the symbol */
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unsigned char st_size[8]; /* Associated symbol size */
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} Elf64_External_Sym;
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typedef struct {
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unsigned char est_shndx[4]; /* Section index */
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} Elf_External_Sym_Shndx;
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/* Note segments */
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typedef struct {
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unsigned char namesz[4]; /* Size of entry's owner string */
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unsigned char descsz[4]; /* Size of the note descriptor */
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unsigned char type[4]; /* Interpretation of the descriptor */
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char name[1]; /* Start of the name+desc data */
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} Elf_External_Note;
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/* Relocation Entries */
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typedef struct {
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unsigned char r_offset[4]; /* Location at which to apply the action */
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unsigned char r_info[4]; /* index and type of relocation */
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} Elf32_External_Rel;
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typedef struct {
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unsigned char r_offset[4]; /* Location at which to apply the action */
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unsigned char r_info[4]; /* index and type of relocation */
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unsigned char r_addend[4]; /* Constant addend used to compute value */
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} Elf32_External_Rela;
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typedef struct {
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unsigned char r_offset[8]; /* Location at which to apply the action */
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unsigned char r_info[8]; /* index and type of relocation */
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} Elf64_External_Rel;
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typedef struct {
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unsigned char r_offset[8]; /* Location at which to apply the action */
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unsigned char r_info[8]; /* index and type of relocation */
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unsigned char r_addend[8]; /* Constant addend used to compute value */
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} Elf64_External_Rela;
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/* dynamic section structure */
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typedef struct {
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unsigned char d_tag[4]; /* entry tag value */
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union {
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unsigned char d_val[4];
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unsigned char d_ptr[4];
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} d_un;
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} Elf32_External_Dyn;
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typedef struct {
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unsigned char d_tag[8]; /* entry tag value */
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union {
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unsigned char d_val[8];
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unsigned char d_ptr[8];
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} d_un;
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} Elf64_External_Dyn;
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/* The version structures are currently size independent. They are
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named without a 32 or 64. If that ever changes, these structures
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will need to be renamed. */
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/* This structure appears in a SHT_GNU_verdef section. */
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typedef struct {
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unsigned char vd_version[2];
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unsigned char vd_flags[2];
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unsigned char vd_ndx[2];
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unsigned char vd_cnt[2];
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unsigned char vd_hash[4];
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unsigned char vd_aux[4];
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unsigned char vd_next[4];
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} Elf_External_Verdef;
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/* This structure appears in a SHT_GNU_verdef section. */
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typedef struct {
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unsigned char vda_name[4];
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unsigned char vda_next[4];
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} Elf_External_Verdaux;
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/* This structure appears in a SHT_GNU_verneed section. */
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typedef struct {
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unsigned char vn_version[2];
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unsigned char vn_cnt[2];
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unsigned char vn_file[4];
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unsigned char vn_aux[4];
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unsigned char vn_next[4];
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} Elf_External_Verneed;
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/* This structure appears in a SHT_GNU_verneed section. */
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typedef struct {
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unsigned char vna_hash[4];
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unsigned char vna_flags[2];
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unsigned char vna_other[2];
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unsigned char vna_name[4];
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unsigned char vna_next[4];
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} Elf_External_Vernaux;
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/* This structure appears in a SHT_GNU_versym section. This is not a
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standard ELF structure; ELF just uses Elf32_Half. */
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typedef struct {
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unsigned char vs_vers[2];
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} ATTRIBUTE_PACKED Elf_External_Versym;
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/* Structure for syminfo section. */
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typedef struct
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{
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unsigned char si_boundto[2];
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unsigned char si_flags[2];
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} Elf_External_Syminfo;
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/* This structure appears on the stack and in NT_AUXV core file notes. */
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typedef struct
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{
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unsigned char a_type[4];
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unsigned char a_val[4];
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} Elf32_External_Auxv;
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typedef struct
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{
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unsigned char a_type[8];
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unsigned char a_val[8];
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} Elf64_External_Auxv;
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/* Size of SHT_GROUP section entry. */
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#define GRP_ENTRY_SIZE 4
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#endif /* _ELF_EXTERNAL_H */
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