| /* ELF support for BFD. |
| Copyright 1991, 1992, 1993, 1994, 1995, 1997, 1998, 2000, 2001 |
| Free Software Foundation, Inc. |
| |
| Written by Fred Fish @ Cygnus Support, from information published |
| in "UNIX System V Release 4, Programmers Guide: ANSI C and |
| Programming Support Tools". |
| |
| 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 2 of the License, or |
| (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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| |
| |
| /* This file is part of ELF support for BFD, and contains the portions |
| that describe how ELF is represented internally in the BFD library. |
| I.E. it describes the in-memory representation of ELF. It requires |
| the elf-common.h file which contains the portions that are common to |
| both the internal and external representations. */ |
| |
| |
| /* NOTE that these structures are not kept in the same order as they appear |
| in the object file. In some cases they've been reordered for more optimal |
| packing under various circumstances. */ |
| |
| #ifndef _ELF_INTERNAL_H |
| #define _ELF_INTERNAL_H |
| |
| /* ELF Header */ |
| |
| #define EI_NIDENT 16 /* Size of e_ident[] */ |
| |
| typedef struct elf_internal_ehdr { |
| unsigned char e_ident[EI_NIDENT]; /* ELF "magic number" */ |
| bfd_vma e_entry; /* Entry point virtual address */ |
| bfd_size_type e_phoff; /* Program header table file offset */ |
| bfd_size_type e_shoff; /* Section header table file offset */ |
| unsigned long e_version; /* Identifies object file version */ |
| unsigned long e_flags; /* Processor-specific flags */ |
| unsigned short e_type; /* Identifies object file type */ |
| unsigned short e_machine; /* Specifies required architecture */ |
| unsigned int e_ehsize; /* ELF header size in bytes */ |
| unsigned int e_phentsize; /* Program header table entry size */ |
| unsigned int e_phnum; /* Program header table entry count */ |
| unsigned int e_shentsize; /* Section header table entry size */ |
| unsigned int e_shnum; /* Section header table entry count */ |
| unsigned int e_shstrndx; /* Section header string table index */ |
| } Elf_Internal_Ehdr; |
| |
| #define elf32_internal_ehdr elf_internal_ehdr |
| #define Elf32_Internal_Ehdr Elf_Internal_Ehdr |
| #define elf64_internal_ehdr elf_internal_ehdr |
| #define Elf64_Internal_Ehdr Elf_Internal_Ehdr |
| |
| /* Program header */ |
| |
| struct elf_internal_phdr { |
| unsigned long p_type; /* Identifies program segment type */ |
| unsigned long p_flags; /* Segment flags */ |
| bfd_vma p_offset; /* Segment file offset */ |
| bfd_vma p_vaddr; /* Segment virtual address */ |
| bfd_vma p_paddr; /* Segment physical address */ |
| bfd_vma p_filesz; /* Segment size in file */ |
| bfd_vma p_memsz; /* Segment size in memory */ |
| bfd_vma p_align; /* Segment alignment, file & memory */ |
| }; |
| |
| typedef struct elf_internal_phdr Elf_Internal_Phdr; |
| #define elf32_internal_phdr elf_internal_phdr |
| #define Elf32_Internal_Phdr Elf_Internal_Phdr |
| #define elf64_internal_phdr elf_internal_phdr |
| #define Elf64_Internal_Phdr Elf_Internal_Phdr |
| |
| /* Section header */ |
| |
| typedef struct elf_internal_shdr { |
| unsigned int sh_name; /* Section name, index in string tbl */ |
| unsigned int sh_type; /* Type of section */ |
| bfd_vma sh_flags; /* Miscellaneous section attributes */ |
| bfd_vma sh_addr; /* Section virtual addr at execution */ |
| bfd_size_type sh_size; /* Size of section in bytes */ |
| bfd_size_type sh_entsize; /* Entry size if section holds table */ |
| unsigned long sh_link; /* Index of another section */ |
| unsigned long sh_info; /* Additional section information */ |
| file_ptr sh_offset; /* Section file offset */ |
| unsigned int sh_addralign; /* Section alignment */ |
| |
| /* The internal rep also has some cached info associated with it. */ |
| asection * bfd_section; /* Associated BFD section. */ |
| unsigned char *contents; /* Section contents. */ |
| } Elf_Internal_Shdr; |
| |
| #define elf32_internal_shdr elf_internal_shdr |
| #define Elf32_Internal_Shdr Elf_Internal_Shdr |
| #define elf64_internal_shdr elf_internal_shdr |
| #define Elf64_Internal_Shdr Elf_Internal_Shdr |
| |
| /* Symbol table entry */ |
| |
| struct elf_internal_sym { |
| bfd_vma st_value; /* Value of the symbol */ |
| bfd_vma st_size; /* Associated symbol size */ |
| unsigned long st_name; /* Symbol name, index in string tbl */ |
| unsigned char st_info; /* Type and binding attributes */ |
| unsigned char st_other; /* Visibilty, and target specific */ |
| unsigned int st_shndx; /* Associated section index */ |
| }; |
| |
| typedef struct elf_internal_sym Elf_Internal_Sym; |
| |
| #define elf32_internal_sym elf_internal_sym |
| #define elf64_internal_sym elf_internal_sym |
| #define Elf32_Internal_Sym Elf_Internal_Sym |
| #define Elf64_Internal_Sym Elf_Internal_Sym |
| |
| /* Note segments */ |
| |
| typedef struct elf_internal_note { |
| unsigned long namesz; /* Size of entry's owner string */ |
| unsigned long descsz; /* Size of the note descriptor */ |
| unsigned long type; /* Interpretation of the descriptor */ |
| char * namedata; /* Start of the name+desc data */ |
| char * descdata; /* Start of the desc data */ |
| bfd_vma descpos; /* File offset of the descdata */ |
| } Elf_Internal_Note; |
| #define Elf32_Internal_Note Elf_Internal_Note |
| #define elf32_internal_note elf_internal_note |
| |
| /* Relocation Entries */ |
| |
| typedef struct elf_internal_rel { |
| bfd_vma r_offset; /* Location at which to apply the action */ |
| /* This needs to support 64-bit values in elf64. */ |
| bfd_vma r_info; /* index and type of relocation */ |
| } Elf_Internal_Rel; |
| |
| #define elf32_internal_rel elf_internal_rel |
| #define Elf32_Internal_Rel Elf_Internal_Rel |
| #define elf64_internal_rel elf_internal_rel |
| #define Elf64_Internal_Rel Elf_Internal_Rel |
| |
| typedef struct elf_internal_rela { |
| bfd_vma r_offset; /* Location at which to apply the action */ |
| bfd_vma r_info; /* Index and Type of relocation */ |
| bfd_vma r_addend; /* Constant addend used to compute value */ |
| } Elf_Internal_Rela; |
| |
| #define elf32_internal_rela elf_internal_rela |
| #define elf64_internal_rela elf_internal_rela |
| #define Elf32_Internal_Rela Elf_Internal_Rela |
| #define Elf64_Internal_Rela Elf_Internal_Rela |
| |
| /* dynamic section structure */ |
| |
| typedef struct elf_internal_dyn { |
| /* This needs to support 64-bit values in elf64. */ |
| bfd_vma d_tag; /* entry tag value */ |
| union { |
| /* This needs to support 64-bit values in elf64. */ |
| bfd_vma d_val; |
| bfd_vma d_ptr; |
| } d_un; |
| } Elf_Internal_Dyn; |
| |
| #define elf32_internal_dyn elf_internal_dyn |
| #define elf64_internal_dyn elf_internal_dyn |
| #define Elf32_Internal_Dyn Elf_Internal_Dyn |
| #define Elf64_Internal_Dyn Elf_Internal_Dyn |
| |
| /* This structure appears in a SHT_GNU_verdef section. */ |
| |
| typedef struct elf_internal_verdef { |
| unsigned short vd_version; /* Version number of structure. */ |
| unsigned short vd_flags; /* Flags (VER_FLG_*). */ |
| unsigned short vd_ndx; /* Version index. */ |
| unsigned short vd_cnt; /* Number of verdaux entries. */ |
| unsigned long vd_hash; /* Hash of name. */ |
| unsigned long vd_aux; /* Offset to verdaux entries. */ |
| unsigned long vd_next; /* Offset to next verdef. */ |
| |
| /* These fields are set up when BFD reads in the structure. FIXME: |
| It would be cleaner to store these in a different structure. */ |
| bfd *vd_bfd; /* BFD. */ |
| const char *vd_nodename; /* Version name. */ |
| struct elf_internal_verdef *vd_nextdef; /* vd_next as pointer. */ |
| struct elf_internal_verdaux *vd_auxptr; /* vd_aux as pointer. */ |
| unsigned int vd_exp_refno; /* Used by the linker. */ |
| } Elf_Internal_Verdef; |
| |
| /* This structure appears in a SHT_GNU_verdef section. */ |
| |
| typedef struct elf_internal_verdaux { |
| unsigned long vda_name; /* String table offset of name. */ |
| unsigned long vda_next; /* Offset to next verdaux. */ |
| |
| /* These fields are set up when BFD reads in the structure. FIXME: |
| It would be cleaner to store these in a different structure. */ |
| const char *vda_nodename; /* vda_name as pointer. */ |
| struct elf_internal_verdaux *vda_nextptr; /* vda_next as pointer. */ |
| } Elf_Internal_Verdaux; |
| |
| /* This structure appears in a SHT_GNU_verneed section. */ |
| |
| typedef struct elf_internal_verneed { |
| unsigned short vn_version; /* Version number of structure. */ |
| unsigned short vn_cnt; /* Number of vernaux entries. */ |
| unsigned long vn_file; /* String table offset of library name. */ |
| unsigned long vn_aux; /* Offset to vernaux entries. */ |
| unsigned long vn_next; /* Offset to next verneed. */ |
| |
| /* These fields are set up when BFD reads in the structure. FIXME: |
| It would be cleaner to store these in a different structure. */ |
| bfd *vn_bfd; /* BFD. */ |
| const char *vn_filename; /* vn_file as pointer. */ |
| struct elf_internal_vernaux *vn_auxptr; /* vn_aux as pointer. */ |
| struct elf_internal_verneed *vn_nextref; /* vn_nextref as pointer. */ |
| } Elf_Internal_Verneed; |
| |
| /* This structure appears in a SHT_GNU_verneed section. */ |
| |
| typedef struct elf_internal_vernaux { |
| unsigned long vna_hash; /* Hash of dependency name. */ |
| unsigned short vna_flags; /* Flags (VER_FLG_*). */ |
| unsigned short vna_other; /* Unused. */ |
| unsigned long vna_name; /* String table offset to version name. */ |
| unsigned long vna_next; /* Offset to next vernaux. */ |
| |
| /* These fields are set up when BFD reads in the structure. FIXME: |
| It would be cleaner to store these in a different structure. */ |
| const char *vna_nodename; /* vna_name as pointer. */ |
| struct elf_internal_vernaux *vna_nextptr; /* vna_next as pointer. */ |
| } Elf_Internal_Vernaux; |
| |
| /* This structure appears in a SHT_GNU_versym section. This is not a |
| standard ELF structure; ELF just uses Elf32_Half. */ |
| |
| typedef struct elf_internal_versym { |
| unsigned short vs_vers; |
| } Elf_Internal_Versym; |
| |
| /* Structure for syminfo section. */ |
| typedef struct |
| { |
| unsigned short int si_boundto; |
| unsigned short int si_flags; |
| } Elf_Internal_Syminfo; |
| |
| |
| #define elf32_internal_verdef elf_internal_verdef |
| #define elf64_internal_verdef elf_internal_verdef |
| #define elf32_internal_verdaux elf_internal_verdaux |
| #define elf64_internal_verdaux elf_internal_verdaux |
| #define elf32_internal_verneed elf_internal_verneed |
| #define elf64_internal_verneed elf_internal_verneed |
| #define elf32_internal_vernaux elf_internal_vernaux |
| #define elf64_internal_vernaux elf_internal_vernaux |
| #define elf32_internal_versym elf_internal_versym |
| #define elf64_internal_versym elf_internal_versym |
| |
| #define Elf32_Internal_Verdef Elf_Internal_Verdef |
| #define Elf64_Internal_Verdef Elf_Internal_Verdef |
| #define Elf32_Internal_Verdaux Elf_Internal_Verdaux |
| #define Elf64_Internal_Verdaux Elf_Internal_Verdaux |
| #define Elf32_Internal_Verneed Elf_Internal_Verneed |
| #define Elf64_Internal_Verneed Elf_Internal_Verneed |
| #define Elf32_Internal_Vernaux Elf_Internal_Vernaux |
| #define Elf64_Internal_Vernaux Elf_Internal_Vernaux |
| #define Elf32_Internal_Versym Elf_Internal_Versym |
| #define Elf64_Internal_Versym Elf_Internal_Versym |
| #define Elf32_Internal_Syminfo Elf_Internal_Syminfo |
| #define Elf64_Internal_Syminfo Elf_Internal_Syminfo |
| |
| /* This structure is used to describe how sections should be assigned |
| to program segments. */ |
| |
| struct elf_segment_map |
| { |
| /* Next program segment. */ |
| struct elf_segment_map *next; |
| /* Program segment type. */ |
| unsigned long p_type; |
| /* Program segment flags. */ |
| unsigned long p_flags; |
| /* Program segment physical address. */ |
| bfd_vma p_paddr; |
| /* Whether the p_flags field is valid; if not, the flags are based |
| on the section flags. */ |
| unsigned int p_flags_valid : 1; |
| /* Whether the p_paddr field is valid; if not, the physical address |
| is based on the section lma values. */ |
| unsigned int p_paddr_valid : 1; |
| /* Whether this segment includes the file header. */ |
| unsigned int includes_filehdr : 1; |
| /* Whether this segment includes the program headers. */ |
| unsigned int includes_phdrs : 1; |
| /* Number of sections (may be 0). */ |
| unsigned int count; |
| /* Sections. Actual number of elements is in count field. */ |
| asection *sections[1]; |
| }; |
| |
| #endif /* _ELF_INTERNAL_H */ |