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Diffstat (limited to '')
| -rw-r--r-- | src/readelf.h | 545 |
1 files changed, 545 insertions, 0 deletions
diff --git a/src/readelf.h b/src/readelf.h new file mode 100644 index 0000000..809d3f7 --- /dev/null +++ b/src/readelf.h @@ -0,0 +1,545 @@ +/* + * Copyright (c) Christos Zoulas 2003. + * All Rights Reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice immediately at the beginning of the file, without modification, + * this list of conditions, and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +/* + * @(#)Id: readelf.h,v 1.9 2002/05/16 18:45:56 christos Exp + * + * Provide elf data structures for non-elf machines, allowing file + * non-elf hosts to determine if an elf binary is stripped. + * Note: cobbled from the linux header file, with modifications + */ +#ifndef __fake_elf_h__ +#define __fake_elf_h__ + +#if HAVE_STDINT_H +#include <stdint.h> +#endif + +typedef uint32_t Elf32_Addr; +typedef uint32_t Elf32_Off; +typedef uint16_t Elf32_Half; +typedef uint32_t Elf32_Word; +typedef uint8_t Elf32_Char; + +typedef uint64_t Elf64_Addr; +typedef uint64_t Elf64_Off; +typedef uint64_t Elf64_Xword; +typedef uint16_t Elf64_Half; +typedef uint32_t Elf64_Word; +typedef uint8_t Elf64_Char; + +#define EI_NIDENT 16 + +typedef struct { + Elf32_Word a_type; /* 32-bit id */ + Elf32_Word a_v; /* 32-bit id */ +} Aux32Info; + +typedef struct { + Elf64_Xword a_type; /* 64-bit id */ + Elf64_Xword a_v; /* 64-bit id */ +} Aux64Info; + +#define AT_NULL 0 /* end of vector */ +#define AT_IGNORE 1 /* entry should be ignored */ +#define AT_EXECFD 2 /* file descriptor of program */ +#define AT_PHDR 3 /* program headers for program */ +#define AT_PHENT 4 /* size of program header entry */ +#define AT_PHNUM 5 /* number of program headers */ +#define AT_PAGESZ 6 /* system page size */ +#define AT_BASE 7 /* base address of interpreter */ +#define AT_FLAGS 8 /* flags */ +#define AT_ENTRY 9 /* entry point of program */ +#define AT_LINUX_NOTELF 10 /* program is not ELF */ +#define AT_LINUX_UID 11 /* real uid */ +#define AT_LINUX_EUID 12 /* effective uid */ +#define AT_LINUX_GID 13 /* real gid */ +#define AT_LINUX_EGID 14 /* effective gid */ +#define AT_LINUX_PLATFORM 15 /* string identifying CPU for optimizations */ +#define AT_LINUX_HWCAP 16 /* arch dependent hints at CPU capabilities */ +#define AT_LINUX_CLKTCK 17 /* frequency at which times() increments */ +/* AT_* values 18 through 22 are reserved */ +#define AT_LINUX_SECURE 23 /* secure mode boolean */ +#define AT_LINUX_BASE_PLATFORM 24 /* string identifying real platform, may + * differ from AT_PLATFORM. */ +#define AT_LINUX_RANDOM 25 /* address of 16 random bytes */ +#define AT_LINUX_HWCAP2 26 /* extension of AT_HWCAP */ +#define AT_LINUX_EXECFN 31 /* filename of program */ + +typedef struct { + Elf32_Char e_ident[EI_NIDENT]; + Elf32_Half e_type; + Elf32_Half e_machine; + Elf32_Word e_version; + Elf32_Addr e_entry; /* Entry point */ + Elf32_Off e_phoff; + Elf32_Off e_shoff; + Elf32_Word e_flags; + Elf32_Half e_ehsize; + Elf32_Half e_phentsize; + Elf32_Half e_phnum; + Elf32_Half e_shentsize; + Elf32_Half e_shnum; + Elf32_Half e_shstrndx; +} Elf32_Ehdr; + +typedef struct { + Elf64_Char e_ident[EI_NIDENT]; + Elf64_Half e_type; + Elf64_Half e_machine; + Elf64_Word e_version; + Elf64_Addr e_entry; /* Entry point */ + Elf64_Off e_phoff; + Elf64_Off e_shoff; + Elf64_Word e_flags; + Elf64_Half e_ehsize; + Elf64_Half e_phentsize; + Elf64_Half e_phnum; + Elf64_Half e_shentsize; + Elf64_Half e_shnum; + Elf64_Half e_shstrndx; +} Elf64_Ehdr; + +/* e_type */ +#define ET_REL 1 +#define ET_EXEC 2 +#define ET_DYN 3 +#define ET_CORE 4 + +/* e_machine (used only for SunOS 5.x hardware capabilities) */ +#define EM_SPARC 2 +#define EM_386 3 +#define EM_SPARC32PLUS 18 +#define EM_SPARCV9 43 +#define EM_IA_64 50 +#define EM_AMD64 62 + +/* sh_type */ +#define SHT_SYMTAB 2 +#define SHT_NOTE 7 +#define SHT_DYNSYM 11 +#define SHT_SUNW_cap 0x6ffffff5 /* SunOS 5.x hw/sw capabilities */ + +/* elf type */ +#define ELFDATANONE 0 /* e_ident[EI_DATA] */ +#define ELFDATA2LSB 1 +#define ELFDATA2MSB 2 + +/* elf class */ +#define ELFCLASSNONE 0 +#define ELFCLASS32 1 +#define ELFCLASS64 2 + +/* magic number */ +#define EI_MAG0 0 /* e_ident[] indexes */ +#define EI_MAG1 1 +#define EI_MAG2 2 +#define EI_MAG3 3 +#define EI_CLASS 4 +#define EI_DATA 5 +#define EI_VERSION 6 +#define EI_PAD 7 + +#define ELFMAG0 0x7f /* EI_MAG */ +#define ELFMAG1 'E' +#define ELFMAG2 'L' +#define ELFMAG3 'F' +#define ELFMAG "\177ELF" + +#define OLFMAG1 'O' +#define OLFMAG "\177OLF" + +typedef struct { + Elf32_Word p_type; + Elf32_Off p_offset; + Elf32_Addr p_vaddr; + Elf32_Addr p_paddr; + Elf32_Word p_filesz; + Elf32_Word p_memsz; + Elf32_Word p_flags; + Elf32_Word p_align; +} Elf32_Phdr; + +typedef struct { + Elf64_Word p_type; + Elf64_Word p_flags; + Elf64_Off p_offset; + Elf64_Addr p_vaddr; + Elf64_Addr p_paddr; + Elf64_Xword p_filesz; + Elf64_Xword p_memsz; + Elf64_Xword p_align; +} Elf64_Phdr; + +#define PT_NULL 0 /* p_type */ +#define PT_LOAD 1 +#define PT_DYNAMIC 2 +#define PT_INTERP 3 +#define PT_NOTE 4 +#define PT_SHLIB 5 +#define PT_PHDR 6 +#define PT_NUM 7 + +typedef struct { + Elf32_Word sh_name; + Elf32_Word sh_type; + Elf32_Word sh_flags; + Elf32_Addr sh_addr; + Elf32_Off sh_offset; + Elf32_Word sh_size; + Elf32_Word sh_link; + Elf32_Word sh_info; + Elf32_Word sh_addralign; + Elf32_Word sh_entsize; +} Elf32_Shdr; + +typedef struct { + Elf64_Word sh_name; + Elf64_Word sh_type; + Elf64_Off sh_flags; + Elf64_Addr sh_addr; + Elf64_Off sh_offset; + Elf64_Off sh_size; + Elf64_Word sh_link; + Elf64_Word sh_info; + Elf64_Off sh_addralign; + Elf64_Off sh_entsize; +} Elf64_Shdr; + +#define NT_NETBSD_CORE_PROCINFO 1 +#define NT_NETBSD_CORE_AUXV 2 + +struct NetBSD_elfcore_procinfo { + /* Version 1 fields start here. */ + uint32_t cpi_version; /* our version */ + uint32_t cpi_cpisize; /* sizeof(this struct) */ + uint32_t cpi_signo; /* killing signal */ + uint32_t cpi_sigcode; /* signal code */ + uint32_t cpi_sigpend[4]; /* pending signals */ + uint32_t cpi_sigmask[4]; /* blocked signals */ + uint32_t cpi_sigignore[4]; /* ignored signals */ + uint32_t cpi_sigcatch[4]; /* caught signals */ + int32_t cpi_pid; /* process ID */ + int32_t cpi_ppid; /* parent process ID */ + int32_t cpi_pgrp; /* process group ID */ + int32_t cpi_sid; /* session ID */ + uint32_t cpi_ruid; /* real user ID */ + uint32_t cpi_euid; /* effective user ID */ + uint32_t cpi_svuid; /* saved user ID */ + uint32_t cpi_rgid; /* real group ID */ + uint32_t cpi_egid; /* effective group ID */ + uint32_t cpi_svgid; /* saved group ID */ + uint32_t cpi_nlwps; /* number of LWPs */ + int8_t cpi_name[32]; /* copy of p->p_comm */ + /* Add version 2 fields below here. */ + int32_t cpi_siglwp; /* LWP target of killing signal */ +}; + +/* Note header in a PT_NOTE section */ +typedef struct elf_note { + Elf32_Word n_namesz; /* Name size */ + Elf32_Word n_descsz; /* Content size */ + Elf32_Word n_type; /* Content type */ +} Elf32_Nhdr; + +typedef struct { + Elf64_Word n_namesz; + Elf64_Word n_descsz; + Elf64_Word n_type; +} Elf64_Nhdr; + +/* Notes used in ET_CORE */ +#define NT_PRSTATUS 1 +#define NT_PRFPREG 2 +#define NT_PRPSINFO 3 +#define NT_PRXREG 4 +#define NT_TASKSTRUCT 4 +#define NT_PLATFORM 5 +#define NT_AUXV 6 + +/* Note types used in executables */ +/* NetBSD executables (name = "NetBSD") */ +#define NT_NETBSD_VERSION 1 +#define NT_NETBSD_EMULATION 2 +#define NT_FREEBSD_VERSION 1 +#define NT_OPENBSD_VERSION 1 +#define NT_DRAGONFLY_VERSION 1 +/* + * GNU executables (name = "GNU") + * word[0]: GNU OS tags + * word[1]: major version + * word[2]: minor version + * word[3]: tiny version + */ +#define NT_GNU_VERSION 1 + +/* GNU OS tags */ +#define GNU_OS_LINUX 0 +#define GNU_OS_HURD 1 +#define GNU_OS_SOLARIS 2 +#define GNU_OS_KFREEBSD 3 +#define GNU_OS_KNETBSD 4 + +/* + * GNU Hardware capability information + * word[0]: Number of entries + * word[1]: Bitmask of enabled entries + * Followed by a byte id, and a NUL terminated string per entry + */ +#define NT_GNU_HWCAP 2 + +/* + * GNU Build ID generated by ld + * 160 bit SHA1 [default] + * 128 bit md5 or uuid + */ +#define NT_GNU_BUILD_ID 3 + +/* + * NetBSD-specific note type: PaX. + * There should be 1 NOTE per executable. + * name: PaX\0 + * namesz: 4 + * desc: + * word[0]: capability bitmask + * descsz: 4 + */ +#define NT_NETBSD_PAX 3 +#define NT_NETBSD_PAX_MPROTECT 0x01 /* Force enable Mprotect */ +#define NT_NETBSD_PAX_NOMPROTECT 0x02 /* Force disable Mprotect */ +#define NT_NETBSD_PAX_GUARD 0x04 /* Force enable Segvguard */ +#define NT_NETBSD_PAX_NOGUARD 0x08 /* Force disable Servguard */ +#define NT_NETBSD_PAX_ASLR 0x10 /* Force enable ASLR */ +#define NT_NETBSD_PAX_NOASLR 0x20 /* Force disable ASLR */ + +/* + * NetBSD-specific note type: MACHINE_ARCH. + * There should be 1 NOTE per executable. + * name: NetBSD\0 + * namesz: 7 + * desc: string + * descsz: variable + */ +#define NT_NETBSD_MARCH 5 + +/* + * NetBSD-specific note type: COMPILER MODEL. + * There should be 1 NOTE per executable. + * name: NetBSD\0 + * namesz: 7 + * desc: string + * descsz: variable + */ +#define NT_NETBSD_CMODEL 6 + +/* + * Golang-specific note type + * name: Go\0\0 + * namesz: 4 + * desc: base-64 build id. + * descsz: < 128 + */ +#define NT_GO_BUILD_ID 4 + +/* + * FreeBSD specific notes + */ +#define NT_FREEBSD_PROCSTAT_AUXV 16 + +#if !defined(ELFSIZE) && defined(ARCH_ELFSIZE) +#define ELFSIZE ARCH_ELFSIZE +#endif +/* SunOS 5.x hardware/software capabilities */ +typedef struct { + Elf32_Word c_tag; + union { + Elf32_Word c_val; + Elf32_Addr c_ptr; + } c_un; +} Elf32_Cap; + +typedef struct { + Elf64_Xword c_tag; + union { + Elf64_Xword c_val; + Elf64_Addr c_ptr; + } c_un; +} Elf64_Cap; + +/* SunOS 5.x hardware/software capability tags */ +#define CA_SUNW_NULL 0 +#define CA_SUNW_HW_1 1 +#define CA_SUNW_SF_1 2 + +/* SunOS 5.x software capabilities */ +#define SF1_SUNW_FPKNWN 0x01 +#define SF1_SUNW_FPUSED 0x02 +#define SF1_SUNW_MASK 0x03 + +/* SunOS 5.x hardware capabilities: sparc */ +#define AV_SPARC_MUL32 0x0001 +#define AV_SPARC_DIV32 0x0002 +#define AV_SPARC_FSMULD 0x0004 +#define AV_SPARC_V8PLUS 0x0008 +#define AV_SPARC_POPC 0x0010 +#define AV_SPARC_VIS 0x0020 +#define AV_SPARC_VIS2 0x0040 +#define AV_SPARC_ASI_BLK_INIT 0x0080 +#define AV_SPARC_FMAF 0x0100 +#define AV_SPARC_FJFMAU 0x4000 +#define AV_SPARC_IMA 0x8000 + +/* SunOS 5.x hardware capabilities: 386 */ +#define AV_386_FPU 0x00000001 +#define AV_386_TSC 0x00000002 +#define AV_386_CX8 0x00000004 +#define AV_386_SEP 0x00000008 +#define AV_386_AMD_SYSC 0x00000010 +#define AV_386_CMOV 0x00000020 +#define AV_386_MMX 0x00000040 +#define AV_386_AMD_MMX 0x00000080 +#define AV_386_AMD_3DNow 0x00000100 +#define AV_386_AMD_3DNowx 0x00000200 +#define AV_386_FXSR 0x00000400 +#define AV_386_SSE 0x00000800 +#define AV_386_SSE2 0x00001000 +#define AV_386_PAUSE 0x00002000 +#define AV_386_SSE3 0x00004000 +#define AV_386_MON 0x00008000 +#define AV_386_CX16 0x00010000 +#define AV_386_AHF 0x00020000 +#define AV_386_TSCP 0x00040000 +#define AV_386_AMD_SSE4A 0x00080000 +#define AV_386_POPCNT 0x00100000 +#define AV_386_AMD_LZCNT 0x00200000 +#define AV_386_SSSE3 0x00400000 +#define AV_386_SSE4_1 0x00800000 +#define AV_386_SSE4_2 0x01000000 + +/* + * Dynamic Section structure array + */ +typedef struct { + Elf32_Word d_tag; /* entry tag value */ + union { + Elf32_Addr d_ptr; + Elf32_Word d_val; + } d_un; +} Elf32_Dyn; + +typedef struct { + Elf64_Xword d_tag; /* entry tag value */ + union { + Elf64_Addr d_ptr; + Elf64_Xword d_val; + } d_un; +} Elf64_Dyn; + +/* d_tag */ +#define DT_NULL 0 /* Marks end of dynamic array */ +#define DT_NEEDED 1 /* Name of needed library (DT_STRTAB offset) */ +#define DT_PLTRELSZ 2 /* Size, in bytes, of relocations in PLT */ +#define DT_PLTGOT 3 /* Address of PLT and/or GOT */ +#define DT_HASH 4 /* Address of symbol hash table */ +#define DT_STRTAB 5 /* Address of string table */ +#define DT_SYMTAB 6 /* Address of symbol table */ +#define DT_RELA 7 /* Address of Rela relocation table */ +#define DT_RELASZ 8 /* Size, in bytes, of DT_RELA table */ +#define DT_RELAENT 9 /* Size, in bytes, of one DT_RELA entry */ +#define DT_STRSZ 10 /* Size, in bytes, of DT_STRTAB table */ +#define DT_SYMENT 11 /* Size, in bytes, of one DT_SYMTAB entry */ +#define DT_INIT 12 /* Address of initialization function */ +#define DT_FINI 13 /* Address of termination function */ +#define DT_SONAME 14 /* Shared object name (DT_STRTAB offset) */ +#define DT_RPATH 15 /* Library search path (DT_STRTAB offset) */ +#define DT_SYMBOLIC 16 /* Start symbol search within local object */ +#define DT_REL 17 /* Address of Rel relocation table */ +#define DT_RELSZ 18 /* Size, in bytes, of DT_REL table */ +#define DT_RELENT 19 /* Size, in bytes, of one DT_REL entry */ +#define DT_PLTREL 20 /* Type of PLT relocation entries */ +#define DT_DEBUG 21 /* Used for debugging; unspecified */ +#define DT_TEXTREL 22 /* Relocations might modify non-writable seg */ +#define DT_JMPREL 23 /* Address of relocations associated with PLT */ +#define DT_BIND_NOW 24 /* Process all relocations at load-time */ +#define DT_INIT_ARRAY 25 /* Address of initialization function array */ +#define DT_FINI_ARRAY 26 /* Size, in bytes, of DT_INIT_ARRAY array */ +#define DT_INIT_ARRAYSZ 27 /* Address of termination function array */ +#define DT_FINI_ARRAYSZ 28 /* Size, in bytes, of DT_FINI_ARRAY array*/ +#define DT_RUNPATH 29 /* overrides DT_RPATH */ +#define DT_FLAGS 30 /* Encodes ORIGIN, SYMBOLIC, TEXTREL, BIND_NOW, STATIC_TLS */ +#define DT_ENCODING 31 /* ??? */ +#define DT_PREINIT_ARRAY 32 /* Address of pre-init function array */ +#define DT_PREINIT_ARRAYSZ 33 /* Size, in bytes, of DT_PREINIT_ARRAY array */ +#define DT_NUM 34 + +#define DT_LOOS 0x60000000 /* Operating system specific range */ +#define DT_VERSYM 0x6ffffff0 /* Symbol versions */ +#define DT_FLAGS_1 0x6ffffffb /* ELF dynamic flags */ +#define DT_VERDEF 0x6ffffffc /* Versions defined by file */ +#define DT_VERDEFNUM 0x6ffffffd /* Number of versions defined by file */ +#define DT_VERNEED 0x6ffffffe /* Versions needed by file */ +#define DT_VERNEEDNUM 0x6fffffff /* Number of versions needed by file */ +#define DT_HIOS 0x6fffffff +#define DT_LOPROC 0x70000000 /* Processor-specific range */ +#define DT_HIPROC 0x7fffffff + +/* Flag values for DT_FLAGS */ +#define DF_ORIGIN 0x00000001 /* uses $ORIGIN */ +#define DF_SYMBOLIC 0x00000002 /* */ +#define DF_TEXTREL 0x00000004 /* */ +#define DF_BIND_NOW 0x00000008 /* */ +#define DF_STATIC_TLS 0x00000010 /* */ + +/* Flag values for DT_FLAGS_1 */ +#define DF_1_NOW 0x00000001 /* Same as DF_BIND_NOW */ +#define DF_1_GLOBAL 0x00000002 /* Unused */ +#define DF_1_GROUP 0x00000004 /* Is member of group */ +#define DF_1_NODELETE 0x00000008 /* Cannot be deleted from process */ +#define DF_1_LOADFLTR 0x00000010 /* Immediate loading of filters */ +#define DF_1_INITFIRST 0x00000020 /* init/fini takes priority */ +#define DF_1_NOOPEN 0x00000040 /* Do not allow loading on dlopen() */ +#define DF_1_ORIGIN 0x00000080 /* Require $ORIGIN processing */ +#define DF_1_DIRECT 0x00000100 /* Enable direct bindings */ +#define DF_1_INTERPOSE 0x00000400 /* Is an interposer */ +#define DF_1_NODEFLIB 0x00000800 /* Ignore default library search path */ +#define DF_1_NODUMP 0x00001000 /* Cannot be dumped with dldump(3C) */ +#define DF_1_CONFALT 0x00002000 /* Configuration alternative */ +#define DF_1_ENDFILTEE 0x00004000 /* Filtee ends filter's search */ +#define DF_1_DISPRELDNE 0x00008000 /* Did displacement relocation */ +#define DF_1_DISPRELPND 0x00010000 /* Pending displacement relocation */ +#define DF_1_NODIRECT 0x00020000 /* Has non-direct bindings */ +#define DF_1_IGNMULDEF 0x00040000 /* Used internally */ +#define DF_1_NOKSYMS 0x00080000 /* Used internally */ +#define DF_1_NOHDR 0x00100000 /* Used internally */ +#define DF_1_EDITED 0x00200000 /* Has been modified since build */ +#define DF_1_NORELOC 0x00400000 /* Used internally */ +#define DF_1_SYMINTPOSE 0x00800000 /* Has individual symbol interposers */ +#define DF_1_GLOBAUDIT 0x01000000 /* Require global auditing */ +#define DF_1_SINGLETON 0x02000000 /* Has singleton symbols */ +#define DF_1_STUB 0x04000000 /* Stub */ +#define DF_1_PIE 0x08000000 /* Position Independent Executable */ + +#endif |