bd2274813d
Using nm and sed works fine on Linux, however when moving to other platforms, nm and sed do not work the same way and might have different behaviour. This reduces dependency on host tools and brings back the code for generating the offsets.h directly using a built utility that is portable. Change-Id: I13db1c16cbed12e366fd41d151886bbcbf419548 Signed-off-by: Anas Nashif <anas.nashif@intel.com>
389 lines
8.5 KiB
C
389 lines
8.5 KiB
C
/*
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* Copyright (c) 2010, 2014 Wind River Systems, Inc.
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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 are met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3) Neither the name of Wind River Systems nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND 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 COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/* @file
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* @brief Executable and Linking Format (ELF) definitions
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*
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* The definitions in this header conform to the "Tool Interface Standard (TIS)
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* Executable and Linking Format (ELF) Specification Version 1.2"
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*/
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#ifndef _ELF_H
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#define _ELF_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef unsigned int Elf32_Addr;
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typedef unsigned short Elf32_Half;
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typedef unsigned int Elf32_Off;
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typedef int Elf32_Sword;
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typedef unsigned int Elf32_Word;
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/*
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* Elf header
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*/
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#define EI_NIDENT 16
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typedef struct
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{
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unsigned char e_ident[EI_NIDENT];
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Elf32_Half e_type;
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Elf32_Half e_machine;
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Elf32_Word e_version;
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Elf32_Addr e_entry;
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Elf32_Off e_phoff;
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Elf32_Off e_shoff;
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Elf32_Word e_flags;
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Elf32_Half e_ehsize;
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Elf32_Half e_phentsize;
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Elf32_Half e_phnum;
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Elf32_Half e_shentsize;
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Elf32_Half e_shnum;
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Elf32_Half e_shstrndx;
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} Elf32_Ehdr;
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#define EHDRSZ sizeof(Elf32_Ehdr)
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/*
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* e_ident[] values
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*/
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#define EI_MAG0 0
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#define EI_MAG1 1
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#define EI_MAG2 2
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#define EI_MAG3 3
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#define EI_CLASS 4
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#define EI_DATA 5
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#define EI_VERSION 6
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#define EI_PAD 7
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#define ELFMAG0 0x7f
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#define ELFMAG1 'E'
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#define ELFMAG2 'L'
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#define ELFMAG3 'F'
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#define ELFMAG "\177ELF"
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#define SELFMAG 4
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/*
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* EI_CLASS
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*/
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#define ELFCLASSNONE 0
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#define ELFCLASS32 1
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#define ELFCLASS64 2
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/*
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* EI_DATA
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*/
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#define ELFDATANONE 0
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#define ELFDATA2LSB 1
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#define ELFDATA2MSB 2
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/*
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* e_type
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*/
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#define ET_NONE 0
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#define ET_REL 1
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#define ET_EXEC 2
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#define ET_DYN 3
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#define ET_CORE 4
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#define ET_LOPROC 0xff00
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#define ET_HIPROC 0xffff
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/*
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* e_machine
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*/
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#define EM_NONE 0 /* No machine */
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#define EM_M32 1 /* AT&T WE 32100 */
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#define EM_SPARC 2 /* SPARC */
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#define EM_386 3 /* Intel 80386 */
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#define EM_68K 4 /* Motorola 68000 */
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#define EM_88K 5 /* Motorola 88000 */
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#define EM_486 6 /* Intel 80486 */
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#define EM_860 7 /* Intel 80860 */
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#define EM_MIPS 8 /* MIPS RS3000 Big-Endian */
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#define EM_MIPS_RS4_BE 10 /* MIPS RS4000 Big-Endian */
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#define EM_PPC_OLD 17 /* PowerPC - old */
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#define EM_PPC 20 /* PowerPC */
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#define EM_RCE_OLD 25 /* RCE - old */
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#define EM_NEC_830 36 /* NEC 830 series */
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#define EM_RCE 39 /* RCE */
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#define EM_MCORE 39 /* MCORE */
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#define EM_ARM 40 /* ARM */
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#define EM_SH 42 /* SH */
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#define EM_COLDFIRE 52 /* Motorola ColdFire */
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#define EM_SC 58 /* SC */
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#define EM_M32R 36929 /* M32R */
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#define EM_NEC 36992 /* NEC 850 series */
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/*
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* e_flags
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*/
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#define EF_PPC_EMB 0x80000000
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#define EF_MIPS_NOREORDER 0x00000001
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#define EF_MIPS_PIC 0x00000002
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#define EF_MIPS_CPIC 0x00000004
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#define EF_MIPS_ARCH 0xf0000000
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#define EF_MIPS_ARCH_MIPS_2 0x10000000
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#define EF_MIPS_ARCH_MIPS_3 0x20000000
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/*
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* e_version and EI_VERSION
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*/
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#define EV_NONE 0
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#define EV_CURRENT 1
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/*
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* Special section indexes
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*/
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#define SHN_UNDEF 0
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#define SHN_LORESERVE 0xff00
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#define SHN_LOPROC 0xff00
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#define SHN_HIPROC 0xff1f
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#define SHN_ABS 0xfff1
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#define SHN_COMMON 0xfff2
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#define SHN_HIRESERVE 0xffff
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#define SHN_GHCOMMON 0xff00
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/*
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* Section header
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*/
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typedef struct
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{
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Elf32_Word sh_name;
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Elf32_Word sh_type; /* SHT_... */
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Elf32_Word sh_flags; /* SHF_... */
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Elf32_Addr sh_addr;
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Elf32_Off sh_offset;
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Elf32_Word sh_size;
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Elf32_Word sh_link;
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Elf32_Word sh_info;
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Elf32_Word sh_addralign;
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Elf32_Word sh_entsize;
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} Elf32_Shdr;
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#define SHDRSZ sizeof(Elf32_Shdr)
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/*
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* sh_type
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*/
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#define SHT_NULL 0
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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_HASH 5
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#define SHT_DYNAMIC 6
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#define SHT_NOTE 7
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#define SHT_NOBITS 8
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#define SHT_REL 9
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#define SHT_SHLIB 10
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#define SHT_DYNSYM 11
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#define SHT_COMDAT 12
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#define SHT_LOPROC 0x70000000
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#define SHT_HIPROC 0x7fffffff
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#define SHT_LOUSER 0x80000000
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#define SHT_HIUSER 0xffffffff
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#define SHT_INIT_ARRAY 14
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#define SHT_FINI_ARRAY 15
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#define SHT_PREINIT_ARRAY 16
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#define SHT_GROUP 17
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#define SHT_SYMTAB_SHNDX 18
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#define SHT_NUM 19
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/*
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* sh_flags
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*/
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#define SHF_WRITE 0x1
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#define SHF_ALLOC 0x2
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#define SHF_EXECINSTR 0x4
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#define SHF_MASKPROC 0xf0000000
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#define SHF_MERGE 0x10 /* not part of all ELF ABI docs */
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#define SHF_STRINGS 0x20 /* not part of all ELF ABI docs */
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#define SHF_INFO_LINK 0x40
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#define SHF_LINK_ORDER 0x80
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#define SHF_OS_NONCONFORMING 0x100
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#define SHF_GROUP 0x200
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#define SHF_TLS 0x400
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/*
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* Symbol table
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*/
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typedef struct
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{
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Elf32_Word st_name;
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Elf32_Addr st_value;
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Elf32_Word st_size;
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unsigned char st_info;
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unsigned char st_other;
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Elf32_Half st_shndx;
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} Elf32_Sym;
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#define STN_UNDEF 0
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#define STB_LOCAL 0
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#define STB_GLOBAL 1
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#define STB_WEAK 2
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#define STB_LOPROC 13
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#define STB_HIPROC 15
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#define STT_NOTYPE 0
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#define STT_OBJECT 1
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#define STT_FUNC 2
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#define STT_SECTION 3
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#define STT_FILE 4
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#define STT_COMMON 5
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#define STT_TLS 6
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#define STT_LOOS 10
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#define STT_HIOS 12
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#define STT_LOPROC 13
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#define STT_HIPROC 15
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#define ELF_ST_BIND(x) ((x) >> 4)
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#define ELF_ST_TYPE(x) (((unsigned int) x) & 0xf)
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#define ELF32_ST_BIND(x) ELF_ST_BIND(x)
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#define ELF32_ST_TYPE(x) ELF_ST_TYPE(x)
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/*
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* The STT_ARM_TFUNC type is used by the gnu compiler to mark Thumb
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* functions. The STT_ARM_16BIT type is the thumb equivalent of an
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* object. They are not part of the ARM ABI or EABI - they come from gnu.
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*/
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#define STT_ARM_TFUNC STT_LOPROC /* GNU Thumb function */
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#define STT_ARM_16BIT STT_HIPROC /* GNU Thumb label */
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/*
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* Relocation
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*/
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typedef struct
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{
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Elf32_Addr r_offset;
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Elf32_Word r_info;
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} Elf32_Rel;
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typedef struct
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{
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Elf32_Addr r_offset;
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Elf32_Word r_info;
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Elf32_Sword r_addend;
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} Elf32_Rela;
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#define ELF32_R_SYM(info) ((info)>>8)
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#define ELF32_R_TYPE(info) ((unsigned char)(info))
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#define ELF32_R_INFO(sym,type) (((sym)<<8)+(unsigned char)(type))
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/*
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* Program header
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*/
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typedef struct
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{
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Elf32_Word p_type;
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Elf32_Off p_offset;
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Elf32_Addr p_vaddr;
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Elf32_Addr p_paddr;
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Elf32_Word p_filesz;
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Elf32_Word p_memsz;
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Elf32_Word p_flags;
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Elf32_Word p_align;
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} Elf32_Phdr;
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#define PHDRSZ sizeof(Elf32_Phdr)
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/*
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* p_type
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*/
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#define PT_NULL 0
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#define PT_LOAD 1
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#define PT_DYNAMIC 2
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#define PT_INTERP 3
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#define PT_NOTE 4
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#define PT_SHLIB 5
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#define PT_PHDR 6
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#define PT_LOPROC 0x70000000
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#define PT_HIPROC 0x7fffffff
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/*
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* p_flags
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*/
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#define PF_X 0x1
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#define PF_W 0x2
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#define PF_R 0x4
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#define PF_MASKPROC 0xf0000000
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typedef struct
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{
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Elf32_Sword d_tag;
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union
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{
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Elf32_Word d_val;
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Elf32_Addr d_ptr;
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} d_un;
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} Elf32_Dyn;
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#define DT_NULL 0
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#define DT_NEEDED 1
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#define DT_PLTRELSZ 2
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#define DT_PLTGOT 3
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#define DT_HASH 4
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#define DT_STRTAB 5
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#define DT_SYMTAB 6
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#define DT_RELA 7
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#define DT_RELASZ 8
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#define DT_RELAENT 9
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#define DT_STRSZ 10
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#define DT_SYMENT 11
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#define DT_INIT 12
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#define DT_FINI 13
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#define DT_SONAME 14
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#define DT_RPATH 15
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#define DT_SYMBOLIC 16
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#define DT_REL 17
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#define DT_RELSZ 18
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#define DT_RELENT 19
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#define DT_PLTREL 20
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#define DT_DEBUG 21
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#define DT_TEXTREL 22
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#define DT_JMPREL 23
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#define DT_LOPROC 0x70000000
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#define DT_HIPROC 0x7fffffff
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ELF_H */
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