mirror of
https://github.com/trustedsec/ELFLoader
synced 2026-06-08 17:56:51 +00:00
Kevin Haubris
206 lines
8.2 KiB
C
206 lines
8.2 KiB
C
#ifndef MINIMAL_ELF_H_
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#define MINIMAL_ELF_H_
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/* Minimal elf definitions stripped from FreeBSD's headers
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* and included so that there's no external dependencies
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* for the mac version of the Loader.
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* */
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/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 1996-1998 John D. Polstra.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#define EI_NIDENT 16
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#define EM_386 3
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#define EM_X86_64 62
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#define SHT_PROGBITS 1
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#define SHT_SYMTAB 2
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#define SHT_STRTAB 3
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#define SHT_RELA 4
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#define SHT_REL 9
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#define R_386_32 1
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#define R_386_PC32 2
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typedef uint32_t Elf32_Addr;
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typedef uint16_t Elf32_Half;
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typedef uint32_t Elf32_Off;
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typedef int32_t Elf32_Sword;
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typedef uint32_t Elf32_Word;
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typedef uint64_t Elf32_Lword;
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typedef Elf32_Word Elf32_Hashelt;
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typedef Elf32_Word Elf32_Size;
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typedef Elf32_Sword Elf32_Ssize;
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typedef uint64_t Elf64_Addr;
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typedef uint16_t Elf64_Half;
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typedef uint64_t Elf64_Off;
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typedef int32_t Elf64_Sword;
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typedef int64_t Elf64_Sxword;
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typedef uint32_t Elf64_Word;
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typedef uint64_t Elf64_Lword;
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typedef uint64_t Elf64_Xword;
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typedef Elf64_Word Elf64_Hashelt;
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/* Non-standard class-dependent datatype used for abstraction. */
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typedef Elf64_Xword Elf64_Size;
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typedef Elf64_Sxword Elf64_Ssize;
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typedef struct {
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unsigned char e_ident[EI_NIDENT]; /* File identification. */
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Elf64_Half e_type; /* File type. */
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Elf64_Half e_machine; /* Machine architecture. */
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Elf64_Word e_version; /* ELF format version. */
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Elf64_Addr e_entry; /* Entry point. */
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Elf64_Off e_phoff; /* Program header file offset. */
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Elf64_Off e_shoff; /* Section header file offset. */
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Elf64_Word e_flags; /* Architecture-specific flags. */
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Elf64_Half e_ehsize; /* Size of ELF header in bytes. */
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Elf64_Half e_phentsize; /* Size of program header entry. */
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Elf64_Half e_phnum; /* Number of program header entries. */
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Elf64_Half e_shentsize; /* Size of section header entry. */
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Elf64_Half e_shnum; /* Number of section header entries. */
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Elf64_Half e_shstrndx; /* Section name strings section. */
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} Elf64_Ehdr;
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typedef struct {
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unsigned char e_ident[EI_NIDENT]; /* File identification. */
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Elf32_Half e_type; /* File type. */
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Elf32_Half e_machine; /* Machine architecture. */
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Elf32_Word e_version; /* ELF format version. */
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Elf32_Addr e_entry; /* Entry point. */
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Elf32_Off e_phoff; /* Program header file offset. */
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Elf32_Off e_shoff; /* Section header file offset. */
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Elf32_Word e_flags; /* Architecture-specific flags. */
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Elf32_Half e_ehsize; /* Size of ELF header in bytes. */
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Elf32_Half e_phentsize; /* Size of program header entry. */
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Elf32_Half e_phnum; /* Number of program header entries. */
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Elf32_Half e_shentsize; /* Size of section header entry. */
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Elf32_Half e_shnum; /* Number of section header entries. */
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Elf32_Half e_shstrndx; /* Section name strings section. */
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} Elf32_Ehdr;
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typedef struct {
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Elf32_Word sh_name; /* Section name (index into the
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section header string table). */
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Elf32_Word sh_type; /* Section type. */
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Elf32_Word sh_flags; /* Section flags. */
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Elf32_Addr sh_addr; /* Address in memory image. */
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Elf32_Off sh_offset; /* Offset in file. */
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Elf32_Word sh_size; /* Size in bytes. */
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Elf32_Word sh_link; /* Index of a related section. */
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Elf32_Word sh_info; /* Depends on section type. */
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Elf32_Word sh_addralign; /* Alignment in bytes. */
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Elf32_Word sh_entsize; /* Size of each entry in section. */
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} Elf32_Shdr;
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typedef struct {
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Elf64_Word sh_name; /* Section name (index into the
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section header string table). */
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Elf64_Word sh_type; /* Section type. */
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Elf64_Xword sh_flags; /* Section flags. */
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Elf64_Addr sh_addr; /* Address in memory image. */
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Elf64_Off sh_offset; /* Offset in file. */
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Elf64_Xword sh_size; /* Size in bytes. */
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Elf64_Word sh_link; /* Index of a related section. */
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Elf64_Word sh_info; /* Depends on section type. */
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Elf64_Xword sh_addralign; /* Alignment in bytes. */
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Elf64_Xword sh_entsize; /* Size of each entry in section. */
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} Elf64_Shdr;
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typedef struct {
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Elf64_Word p_type; /* Entry type. */
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Elf64_Word p_flags; /* Access permission flags. */
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Elf64_Off p_offset; /* File offset of contents. */
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Elf64_Addr p_vaddr; /* Virtual address in memory image. */
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Elf64_Addr p_paddr; /* Physical address (not used). */
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Elf64_Xword p_filesz; /* Size of contents in file. */
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Elf64_Xword p_memsz; /* Size of contents in memory. */
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Elf64_Xword p_align; /* Alignment in memory and file. */
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} Elf64_Phdr;
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typedef struct {
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Elf32_Word p_type; /* Entry type. */
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Elf32_Off p_offset; /* File offset of contents. */
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Elf32_Addr p_vaddr; /* Virtual address in memory image. */
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Elf32_Addr p_paddr; /* Physical address (not used). */
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Elf32_Word p_filesz; /* Size of contents in file. */
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Elf32_Word p_memsz; /* Size of contents in memory. */
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Elf32_Word p_flags; /* Access permission flags. */
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Elf32_Word p_align; /* Alignment in memory and file. */
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} Elf32_Phdr;
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/* Relocations that don't need an addend field. */
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typedef struct {
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Elf32_Addr r_offset; /* Location to be relocated. */
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Elf32_Word r_info; /* Relocation type and symbol index. */
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} Elf32_Rel;
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/* Relocations that need an addend field. */
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typedef struct {
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Elf32_Addr r_offset; /* Location to be relocated. */
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Elf32_Word r_info; /* Relocation type and symbol index. */
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Elf32_Sword r_addend; /* Addend. */
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} Elf32_Rela;
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typedef struct {
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Elf32_Word st_name; /* String table index of name. */
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Elf32_Addr st_value; /* Symbol value. */
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Elf32_Word st_size; /* Size of associated object. */
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unsigned char st_info; /* Type and binding information. */
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unsigned char st_other; /* Reserved (not used). */
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Elf32_Half st_shndx; /* Section index of symbol. */
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} Elf32_Sym;
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typedef struct {
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Elf64_Word st_name; /* String table index of name. */
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unsigned char st_info; /* Type and binding information. */
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unsigned char st_other; /* Reserved (not used). */
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Elf64_Half st_shndx; /* Section index of symbol. */
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Elf64_Addr st_value; /* Symbol value. */
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Elf64_Xword st_size; /* Size of associated object. */
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} Elf64_Sym;
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/* Relocations that don't need an addend field. */
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typedef struct {
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Elf64_Addr r_offset; /* Location to be relocated. */
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Elf64_Xword r_info; /* Relocation type and symbol index. */
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} Elf64_Rel;
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/* Relocations that need an addend field. */
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typedef struct {
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Elf64_Addr r_offset; /* Location to be relocated. */
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Elf64_Xword r_info; /* Relocation type and symbol index. */
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Elf64_Sxword r_addend; /* Addend. */
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} Elf64_Rela;
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#endif
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