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Diffstat (limited to 'include/elf/internal.h')
| -rw-r--r-- | include/elf/internal.h | 333 |
1 files changed, 0 insertions, 333 deletions
diff --git a/include/elf/internal.h b/include/elf/internal.h deleted file mode 100644 index 9ea175c..0000000 --- a/include/elf/internal.h +++ /dev/null @@ -1,333 +0,0 @@ -/* ELF support for BFD. - Copyright 1991, 1992, 1993, 1994, 1995, 1997, 1998, 2000, 2001, 2002, - 2003, 2006, 2007, 2008 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 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 - -/* Special section indices, which may show up in st_shndx fields, among - other places. */ - -#undef SHN_UNDEF -#undef SHN_LORESERVE -#undef SHN_LOPROC -#undef SHN_HIPROC -#undef SHN_LOOS -#undef SHN_HIOS -#undef SHN_ABS -#undef SHN_COMMON -#undef SHN_XINDEX -#undef SHN_HIRESERVE -#define SHN_UNDEF 0 /* Undefined section reference */ -#define SHN_LORESERVE (-0x100u) /* Begin range of reserved indices */ -#define SHN_LOPROC (-0x100u) /* Begin range of appl-specific */ -#define SHN_HIPROC (-0xE1u) /* End range of appl-specific */ -#define SHN_LOOS (-0xE0u) /* OS specific semantics, lo */ -#define SHN_HIOS (-0xC1u) /* OS specific semantics, hi */ -#define SHN_ABS (-0xFu) /* Associated symbol is absolute */ -#define SHN_COMMON (-0xEu) /* Associated symbol is in common */ -#define SHN_XINDEX (-0x1u) /* Section index is held elsewhere */ -#define SHN_HIRESERVE (-0x1u) /* End range of reserved indices */ -#define SHN_BAD (-0x101u) /* Used internally by bfd */ - -/* 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; - -/* 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; - -/* 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 */ - file_ptr sh_offset; /* Section file offset */ - bfd_size_type sh_size; /* Size of section in bytes */ - unsigned int sh_link; /* Index of another section */ - unsigned int sh_info; /* Additional section information */ - bfd_vma sh_addralign; /* Section alignment */ - bfd_size_type sh_entsize; /* Entry size if section holds table */ - - /* 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; - -/* 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; - -/* 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; - -/* Relocation Entries */ - -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; - -/* 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; - -/* 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; - -/* This structure appears on the stack and in NT_AUXV core file notes. */ -typedef struct -{ - bfd_vma a_type; - bfd_vma a_val; -} Elf_Internal_Auxv; - - -/* 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; - /* Program segment virtual address offset from section vma. */ - bfd_vma p_vaddr_offset; - /* Program segment alignment. */ - bfd_vma p_align; - /* Segment size in file and memory */ - bfd_vma p_size; - /* Required size of filehdr + phdrs, if non-zero */ - bfd_vma header_size; - /* 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 the p_align field is valid; if not, PT_LOAD segment - alignment is based on the default maximum page size. */ - unsigned int p_align_valid : 1; - /* Whether the p_size field is valid; if not, the size are based - on the section sizes. */ - unsigned int p_size_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]; -}; - -/* .tbss is special. It doesn't contribute memory space to normal - segments and it doesn't take file space in normal segments. */ -#define ELF_SECTION_SIZE(sec_hdr, segment) \ - (((sec_hdr->sh_flags & SHF_TLS) == 0 \ - || sec_hdr->sh_type != SHT_NOBITS \ - || segment->p_type == PT_TLS) ? sec_hdr->sh_size : 0) - -/* Decide if the given sec_hdr is in the given segment. PT_TLS segment - contains only SHF_TLS sections. Only PT_LOAD, PT_GNU_RELRO and - and PT_TLS segments can contain SHF_TLS sections. */ -#define ELF_IS_SECTION_IN_SEGMENT(sec_hdr, segment) \ - (((((sec_hdr->sh_flags & SHF_TLS) != 0) \ - && (segment->p_type == PT_TLS \ - || segment->p_type == PT_GNU_RELRO \ - || segment->p_type == PT_LOAD)) \ - || ((sec_hdr->sh_flags & SHF_TLS) == 0 \ - && segment->p_type != PT_TLS)) \ - /* Any section besides one of type SHT_NOBITS must have a file \ - offset within the segment. */ \ - && (sec_hdr->sh_type == SHT_NOBITS \ - || ((bfd_vma) sec_hdr->sh_offset >= segment->p_offset \ - && (sec_hdr->sh_offset + ELF_SECTION_SIZE(sec_hdr, segment) \ - <= segment->p_offset + segment->p_filesz))) \ - /* SHF_ALLOC sections must have VMAs within the segment. Be \ - careful about segments right at the end of memory. */ \ - && ((sec_hdr->sh_flags & SHF_ALLOC) == 0 \ - || (sec_hdr->sh_addr >= segment->p_vaddr \ - && (sec_hdr->sh_addr - segment->p_vaddr \ - + ELF_SECTION_SIZE(sec_hdr, segment) <= segment->p_memsz)))) - -/* Decide if the given sec_hdr is in the given segment in file. */ -#define ELF_IS_SECTION_IN_SEGMENT_FILE(sec_hdr, segment) \ - (sec_hdr->sh_size > 0 \ - && ELF_IS_SECTION_IN_SEGMENT (sec_hdr, segment)) - -/* Decide if the given sec_hdr is in the given segment in memory. */ -#define ELF_IS_SECTION_IN_SEGMENT_MEMORY(sec_hdr, segment) \ - (ELF_SECTION_SIZE(sec_hdr, segment) > 0 \ - && ELF_IS_SECTION_IN_SEGMENT (sec_hdr, segment)) - -#endif /* _ELF_INTERNAL_H */ |