| /* 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 */ |