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前两天网上投递了简历，面试了一家C++公司，然后对面负责人给我发了一份笔试题，题目是：
请写出一个ELF文件解析器, 需要能打印出所有segments和sections，并列出每个section和segment的映射关系。
首先了解elf是什么，它的结构是怎么样的，然后去读一下别人的源码，读懂之后，自己开始编码。
源码如下（”elf.h” 头文件见后文），它会报warning，但是貌似不太影响最后结果：
#include<stdlib.h>
#include<stdio.h>
#include "elf.h"
int main(int argc, char* argv[])
{
// 参数错误
if(argc < 2)
{
printf("invalid arguments\n");
exit(0);
}
// 打开文件
FILE *fp;
fp = fopen(argv[1], "r");
if (NULL == fp)
{
printf("fail to open the file");
exit(0);
}
// 解析head
Elf64_Ehdr elf_head;
int shnum, a;
// 读取 head 到elf_head
a = fread(&elf_head, sizeof(Elf64_Ehdr), 1, fp);
if (0 == a)
{
printf("fail to read head\n");
exit(0);
}
// 判断elf文件类型
if(elf_head.e_ident[0] != 0x7F ||
elf_head.e_ident[1] != 'E' ||
elf_head.e_ident[2] != 'L' ||
elf_head.e_ident[3] != 'F')
{
printf("Not a ELF file\n");
exit(0);
}
// 解析section 分配内存 section * 数量
Elf64_Shdr *shdr = (Elf64_Shdr*)malloc(sizeof(Elf64_Shdr) * elf_head.e_shnum);
if (NULL == shdr)
{
printf("shdr malloc failed\n");
exit(0);
}
// 设置fp偏移量 offset
a = fseek(fp, elf_head.e_shoff, SEEK_SET);
if(0 != a)
{
printf("\nfaile to fseek\n");
exit(0);
}
// 读取section 到 shdr, 大小为shdr * 数量
a = fread(shdr, sizeof(Elf64_Shdr) * elf_head.e_shnum, 1, fp);
if (0 == a)
{
printf("\nfail to read section\n");
exit(0);
}
// 重置指针位置
rewind(fp);
// 将fp指针移到 字符串表偏移位置处
fseek(fp, shdr[elf_head.e_shstrndx].sh_offset, SEEK_SET);
// 第e_shstrndx项是字符串表 定义 字节 长度 char类型 数组
char shstrtab[shdr[elf_head.e_shstrndx].sh_size];
char *temp = shstrtab;
// 读取内容
a = fread(shstrtab, shdr[elf_head.e_shstrndx].sh_size, 1, fp);
if (0 == a)
{
printf("\nfaile to read\n");
}
// printf("\n\节的信息： \n");
// 遍历
// for (int i = 0; i < elf_head.e_shnum; i++)
// {
// temp = shstrtab;
// temp = temp + shdr[i].sh_name;
// printf("节的名称: %s\n", temp);
// printf("节首的偏移: %x\n", shdr[i].sh_offset);
// printf("节的大小: %x\n", shdr[i].sh_size);
// printf("节尾的地址: %x\n", shdr[i].sh_offset + shdr[i].sh_size);
// printf("\n");
// }
// 解析 segment
Elf64_Phdr *phdr = (Elf64_Phdr*)malloc(sizeof(Elf64_Phdr) * elf_head.e_phnum);
a = fseek(fp, elf_head.e_phoff, SEEK_SET);
a = fread (phdr, sizeof(Elf64_Phdr) * elf_head.e_phnum, 1, fp);
rewind(fp);
fseek(fp, phdr[elf_head.e_shentsize].p_offset, SEEK_SET);
char phstrtab[phdr[elf_head.e_shentsize].p_filesz];
a = fread(phstrtab, phdr[elf_head.e_shentsize].p_filesz, 1, fp);
printf("\n\n段的信息：\n");
for (int i = 0; i < elf_head.e_phnum; i++)
{
printf("%d: \n", i);
printf(" 该段首相对偏移: %x \n", phdr[i].p_offset);
printf(" 该段的大小: %x \n", phdr[i].p_memsz);
printf(" 该段尾相对偏移: %x \n", phdr[i].p_memsz + phdr[i].p_offset);
printf(" *该段包含的节有：\n");
for (int j = 0;j < elf_head.e_shnum; j++)
{
if (
(shdr[j].sh_offset > phdr[i].p_offset) &&
( (shdr[j].sh_offset + shdr[j].sh_size) < (phdr[i].p_offset + phdr[i].p_memsz) )
)
{
temp = shstrtab;
temp = temp + shdr[j].sh_name;
printf(" 节的名称: %s\n", temp);
printf(" 节首的偏移: %x\n", shdr[j].sh_offset);
printf(" 节的大小: %x\n", shdr[j].sh_size);
printf(" 节尾的地址: %x\n", shdr[j].sh_offset + shdr[j].sh_size);
printf("\n");
}
}
printf("\n");
}
printf("\n");
return 0;
}
#include<stdlib.h>
#include<stdio.h>
#include “elf.h”
int main(int argc, char* argv[])
{
// 参数错误
if(argc < 2)
{
printf(“invalid arguments\n”);
exit(0);
}
// 打开文件
FILE *fp;
fp = fopen(argv[1], “r”);
if (NULL == fp)
{
printf(“fail to open the file”);
exit(0);
}
// 解析head
Elf64_Ehdr elf_head;
int shnum, a;
// 读取 head 到elf_head
a = fread(&elf_head, sizeof(Elf64_Ehdr), 1, fp);
if (0 == a)
{
printf(“fail to read head\n”);
exit(0);
}
// 判断elf文件类型
if(elf_head.e_ident[0] != 0x7F ||
elf_head.e_ident[1] != ‘E’ ||
elf_head.e_ident[2] != ‘L’ ||
elf_head.e_ident[3] != ‘F’)
{
printf(“Not a ELF file\n”);
exit(0);
}
// 解析section 分配内存 section * 数量
Elf64_Shdr *shdr = (Elf64_Shdr*)malloc(sizeof(Elf64_Shdr) * elf_head.e_shnum);
if (NULL == shdr)
{
printf(“shdr malloc failed\n”);
exit(0);
}
// 设置fp偏移量 offset
a = fseek(fp, elf_head.e_shoff, SEEK_SET);
if(0 != a)
{
printf(“\nfaile to fseek\n”);
exit(0);
}
// 读取section 到 shdr, 大小为shdr * 数量
a = fread(shdr, sizeof(Elf64_Shdr) * elf_head.e_shnum, 1, fp);
if (0 == a)
{
printf(“\nfail to read section\n”);
exit(0);
}
// 重置指针位置
rewind(fp);
// 将fp指针移到 字符串表偏移位置处
fseek(fp, shdr[elf_head.e_shstrndx].sh_offset, SEEK_SET);
// 第e_shstrndx项是字符串表 定义 字节 长度 char类型 数组
char shstrtab[shdr[elf_head.e_shstrndx].sh_size];
char *temp = shstrtab;
// 读取内容
a = fread(shstrtab, shdr[elf_head.e_shstrndx].sh_size, 1, fp);
if (0 == a)
{
printf(“\nfaile to read\n”);
}
// printf(“\n\节的信息： \n”);
// 遍历
// for (int i = 0; i < elf_head.e_shnum; i++)
// {
// temp = shstrtab;
// temp = temp + shdr[i].sh_name;
// printf(“节的名称: %s\n”, temp);
// printf(“节首的偏移: %x\n”, shdr[i].sh_offset);
// printf(“节的大小: %x\n”, shdr[i].sh_size);
// printf(“节尾的地址: %x\n”, shdr[i].sh_offset + shdr[i].sh_size);
// printf(“\n”);
// }
// 解析 segment
Elf64_Phdr *phdr = (Elf64_Phdr*)malloc(sizeof(Elf64_Phdr) * elf_head.e_phnum);
a = fseek(fp, elf_head.e_phoff, SEEK_SET);
a = fread (phdr, sizeof(Elf64_Phdr) * elf_head.e_phnum, 1, fp);
rewind(fp);
fseek(fp, phdr[elf_head.e_shentsize].p_offset, SEEK_SET);
char phstrtab[phdr[elf_head.e_shentsize].p_filesz];
a = fread(phstrtab, phdr[elf_head.e_shentsize].p_filesz, 1, fp);
printf(“\n\n段的信息：\n”);
for (int i = 0; i < elf_head.e_phnum; i++)
{
printf(“%d: \n”, i);
printf(” 该段首相对偏移: %x \n”, phdr[i].p_offset);
printf(” 该段的大小: %x \n”, phdr[i].p_memsz);
printf(” 该段尾相对偏移: %x \n”, phdr[i].p_memsz + phdr[i].p_offset);
printf(” *该段包含的节有：\n”);
for (int j = 0;j < elf_head.e_shnum; j++)
{
if ((shdr[j].sh_offset > phdr[i].p_offset) && ((shdr[j].sh_offset + shdr[j].sh_size) < (phdr[i].p_offset + phdr[i].p_memsz)))
{
temp = shstrtab;
temp = temp + shdr[j].sh_name;
printf(” 节的名称: %s\n”, temp);
printf(” 节首的偏移: %x\n”, shdr[j].sh_offset);
printf(” 节的大小: %x\n”, shdr[j].sh_size);
printf(” 节尾的地址: %x\n”, shdr[j].sh_offset + shdr[j].sh_size);
printf(“\n”);
}
}
printf(“\n”);
}
printf(“\n”);
return 0;
}
这里用到了一个头文件 “elf.h” ，里面定义了elf文件结构的各种数据结构，能够使解析elf的过程中更加方便：
#ifndef _QEMU_ELF_H
#define _QEMU_ELF_H
#include <inttypes.h>
/* 32-bit ELF base types. */
/* 字节 uint8_t
2字节 uint16_t
4字节 uint32_t
8字节 uint64_t */
typedef uint32_t Elf32_Addr;
typedef uint16_t Elf32_Half;
typedef uint32_t Elf32_Off;
typedef int32_t Elf32_Sword;
typedef uint32_t Elf32_Word;
/* 64-bit ELF base types. */
typedef uint64_t Elf64_Addr;
typedef uint16_t Elf64_Half;
typedef int16_t Elf64_SHalf;
typedef uint64_t Elf64_Off;
typedef int32_t Elf64_Sword;
typedef uint32_t Elf64_Word;
typedef uint64_t Elf64_Xword;
typedef int64_t Elf64_Sxword;
/* These constants are for the segment types stored in the image headers */
#define PT_NULL 0
#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_LOPROC 0x70000000
#define PT_HIPROC 0x7fffffff
#define PT_MIPS_REGINFO 0x70000000
#define PT_MIPS_OPTIONS 0x70000001
/* Flags in the e_flags field of the header */
/* MIPS architecture level. */
#define EF_MIPS_ARCH_1 0x00000000 /* -mips1 code. */
#define EF_MIPS_ARCH_2 0x10000000 /* -mips2 code. */
#define EF_MIPS_ARCH_3 0x20000000 /* -mips3 code. */
#define EF_MIPS_ARCH_4 0x30000000 /* -mips4 code. */
#define EF_MIPS_ARCH_5 0x40000000 /* -mips5 code. */
#define EF_MIPS_ARCH_32 0x50000000 /* MIPS32 code. */
#define EF_MIPS_ARCH_64 0x60000000 /* MIPS64 code. */
/* The ABI of a file. */
#define EF_MIPS_ABI_O32 0x00001000 /* O32 ABI. */
#define EF_MIPS_ABI_O64 0x00002000 /* O32 extended for 64 bit. */
#define EF_MIPS_NOREORDER 0x00000001
#define EF_MIPS_PIC 0x00000002
#define EF_MIPS_CPIC 0x00000004
#define EF_MIPS_ABI2 0x00000020
#define EF_MIPS_OPTIONS_FIRST 0x00000080
#define EF_MIPS_32BITMODE 0x00000100
#define EF_MIPS_ABI 0x0000f000
#define EF_MIPS_ARCH 0xf0000000
/* These constants define the different elf file types */
#define ET_NONE 0
#define ET_REL 1
#define ET_EXEC 2
#define ET_DYN 3
#define ET_CORE 4
#define ET_LOPROC 0xff00
#define ET_HIPROC 0xffff
/* These constants define the various ELF target machines */
#define EM_NONE 0
#define EM_M32 1
#define EM_SPARC 2
#define EM_386 3
#define EM_68K 4
#define EM_88K 5
#define EM_486 6 /* Perhaps disused */
#define EM_860 7
#define EM_MIPS 8 /* MIPS R3000 (officially, big-endian only) */
#define EM_MIPS_RS4_BE 10 /* MIPS R4000 big-endian */
#define EM_PARISC 15 /* HPPA */
#define EM_SPARC32PLUS 18 /* Sun’s “v8plus” */
#define EM_PPC 20 /* PowerPC */
#define EM_PPC64 21 /* PowerPC64 */
#define EM_ARM 40 /* ARM */
#define EM_SH 42 /* SuperH */
#define EM_SPARCV9 43 /* SPARC v9 64-bit */
#define EM_IA_64 50 /* HP/Intel IA-64 */
#define EM_X86_64 62 /* AMD x86-64 */
#define EM_S390 22 /* IBM S/390 */
#define EM_CRIS 76 /* Axis Communications 32-bit embedded processor */
#define EM_V850 87 /* NEC v850 */
#define EM_H8_300H 47 /* Hitachi H8/300H */
#define EM_H8S 48 /* Hitachi H8S */
/*
* This is an interim value that we will use until the committee comes
* up with a final number.
*/
#define EM_ALPHA 0x9026
/* Bogus old v850 magic number, used by old tools. */
#define EM_CYGNUS_V850 0x9080
/*
* This is the old interim value for S/390 architecture
*/
#define EM_S390_OLD 0xA390
/* This is the info that is needed to parse the dynamic section of the file */
#define DT_NULL 0
#define DT_NEEDED 1
#define DT_PLTRELSZ 2
#define DT_PLTGOT 3
#define DT_HASH 4
#define DT_STRTAB 5
#define DT_SYMTAB 6
#define DT_RELA 7
#define DT_RELASZ 8
#define DT_RELAENT 9
#define DT_STRSZ 10
#define DT_SYMENT 11
#define DT_INIT 12
#define DT_FINI 13
#define DT_SONAME 14
#define DT_RPATH 15
#define DT_SYMBOLIC 16
#define DT_REL 17
#define DT_RELSZ 18
#define DT_RELENT 19
#define DT_PLTREL 20
#define DT_DEBUG 21
#define DT_TEXTREL 22
#define DT_JMPREL 23
#define DT_LOPROC 0x70000000
#define DT_HIPROC 0x7fffffff
#define DT_MIPS_RLD_VERSION 0x70000001
#define DT_MIPS_TIME_STAMP 0x70000002
#define DT_MIPS_ICHECKSUM 0x70000003
#define DT_MIPS_IVERSION 0x70000004
#define DT_MIPS_FLAGS 0x70000005
#define RHF_NONE 0
#define RHF_HARDWAY 1
#define RHF_NOTPOT 2
#define DT_MIPS_BASE_ADDRESS 0x70000006
#define DT_MIPS_CONFLICT 0x70000008
#define DT_MIPS_LIBLIST 0x70000009
#define DT_MIPS_LOCAL_GOTNO 0x7000000a
#define DT_MIPS_CONFLICTNO 0x7000000b
#define DT_MIPS_LIBLISTNO 0x70000010
#define DT_MIPS_SYMTABNO 0x70000011
#define DT_MIPS_UNREFEXTNO 0x70000012
#define DT_MIPS_GOTSYM 0x70000013
#define DT_MIPS_HIPAGENO 0x70000014
#define DT_MIPS_RLD_MAP 0x70000016
/* This info is needed when parsing the symbol table */
#define STB_LOCAL 0
#define STB_GLOBAL 1
#define STB_WEAK 2
#define STT_NOTYPE 0
#define STT_OBJECT 1
#define STT_FUNC 2
#define STT_SECTION 3
#define STT_FILE 4
#define ELF_ST_BIND(x) ((x) >> 4)
#define ELF_ST_TYPE(x) (((unsigned int) x) & 0xf)
#define ELF32_ST_BIND(x) ELF_ST_BIND(x)
#define ELF32_ST_TYPE(x) ELF_ST_TYPE(x)
#define ELF64_ST_BIND(x) ELF_ST_BIND(x)
#define ELF64_ST_TYPE(x) ELF_ST_TYPE(x)
/* Symbolic values for the entries in the auxiliary table
put on the initial stack */
#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_NOTELF 10 /* program is not ELF */
#define AT_UID 11 /* real uid */
#define AT_EUID 12 /* effective uid */
#define AT_GID 13 /* real gid */
#define AT_EGID 14 /* effective gid */
#define AT_PLATFORM 15 /* string identifying CPU for optimizations */
#define AT_HWCAP 16 /* arch dependent hints at CPU capabilities */
#define AT_CLKTCK 17 /* frequency at which times() increments */
typedef struct dynamic{
Elf32_Sword d_tag;
union{
Elf32_Sword d_val;
Elf32_Addr d_ptr;
} d_un;
} Elf32_Dyn;
typedef struct {
Elf64_Sxword d_tag; /* entry tag value */
union {
Elf64_Xword d_val;
Elf64_Addr d_ptr;
} d_un;
} Elf64_Dyn;
/* The following are used with relocations */
#define ELF32_R_SYM(x) ((x) >> 8)
#define ELF32_R_TYPE(x) ((x) & 0xff)
#define ELF64_R_SYM(i) ((i) >> 32)
#define ELF64_R_TYPE(i) ((i) & 0xffffffff)
#define ELF64_R_TYPE_DATA(i) (((ELF64_R_TYPE(i) >> 8) ^ 0x00800000) – 0x00800000)
#define R_386_NONE 0
#define R_386_32 1
#define R_386_PC32 2
#define R_386_GOT32 3
#define R_386_PLT32 4
#define R_386_COPY 5
#define R_386_GLOB_DAT 6
#define R_386_JMP_SLOT 7
#define R_386_RELATIVE 8
#define R_386_GOTOFF 9
#define R_386_GOTPC 10
#define R_386_NUM 11
#define R_MIPS_NONE 0
#define R_MIPS_16 1
#define R_MIPS_32 2
#define R_MIPS_REL32 3
#define R_MIPS_26 4
#define R_MIPS_HI16 5
#define R_MIPS_LO16 6
#define R_MIPS_GPREL16 7
#define R_MIPS_LITERAL 8
#define R_MIPS_GOT16 9
#define R_MIPS_PC16 10
#define R_MIPS_CALL16 11
#define R_MIPS_GPREL32 12
/* The remaining relocs are defined on Irix, although they are not
in the MIPS ELF ABI. */
#define R_MIPS_UNUSED1 13
#define R_MIPS_UNUSED2 14
#define R_MIPS_UNUSED3 15
#define R_MIPS_SHIFT5 16
#define R_MIPS_SHIFT6 17
#define R_MIPS_64 18
#define R_MIPS_GOT_DISP 19
#define R_MIPS_GOT_PAGE 20
#define R_MIPS_GOT_OFST 21
/*
* The following two relocation types are specified in the MIPS ABI
* conformance guide version 1.2 but not yet in the psABI.
*/
#define R_MIPS_GOTHI16 22
#define R_MIPS_GOTLO16 23
#define R_MIPS_SUB 24
#define R_MIPS_INSERT_A 25
#define R_MIPS_INSERT_B 26
#define R_MIPS_DELETE 27
#define R_MIPS_HIGHER 28
#define R_MIPS_HIGHEST 29
/*
* The following two relocation types are specified in the MIPS ABI
* conformance guide version 1.2 but not yet in the psABI.
*/
#define R_MIPS_CALLHI16 30
#define R_MIPS_CALLLO16 31
/*
* This range is reserved for vendor specific relocations.
*/
#define R_MIPS_LOVENDOR 100
#define R_MIPS_HIVENDOR 127
/*
* Sparc ELF relocation types
*/
#define R_SPARC_NONE 0
#define R_SPARC_8 1
#define R_SPARC_16 2
#define R_SPARC_32 3
#define R_SPARC_DISP8 4
#define R_SPARC_DISP16 5
#define R_SPARC_DISP32 6
#define R_SPARC_WDISP30 7
#define R_SPARC_WDISP22 8
#define R_SPARC_HI22 9
#define R_SPARC_22 10
#define R_SPARC_13 11
#define R_SPARC_LO10 12
#define R_SPARC_GOT10 13
#define R_SPARC_GOT13 14
#define R_SPARC_GOT22 15
#define R_SPARC_PC10 16
#define R_SPARC_PC22 17
#define R_SPARC_WPLT30 18
#define R_SPARC_COPY 19
#define R_SPARC_GLOB_DAT 20
#define R_SPARC_JMP_SLOT 21
#define R_SPARC_RELATIVE 22
#define R_SPARC_UA32 23
#define R_SPARC_PLT32 24
#define R_SPARC_HIPLT22 25
#define R_SPARC_LOPLT10 26
#define R_SPARC_PCPLT32 27
#define R_SPARC_PCPLT22 28
#define R_SPARC_PCPLT10 29
#define R_SPARC_10 30
#define R_SPARC_11 31
#define R_SPARC_64 32
#define R_SPARC_OLO10 33
#define R_SPARC_HH22 34
#define R_SPARC_HM10 35
#define R_SPARC_LM22 36
#define R_SPARC_WDISP16 40
#define R_SPARC_WDISP19 41
#define R_SPARC_7 43
#define R_SPARC_5 44
#define R_SPARC_6 45
/* Bits present in AT_HWCAP, primarily for Sparc32. */
#define HWCAP_SPARC_FLUSH 1 /* CPU supports flush instruction. */
#define HWCAP_SPARC_STBAR 2
#define HWCAP_SPARC_SWAP 4
#define HWCAP_SPARC_MULDIV 8
#define HWCAP_SPARC_V9 16
#define HWCAP_SPARC_ULTRA3 32
/*
* 68k ELF relocation types
*/
#define R_68K_NONE 0
#define R_68K_32 1
#define R_68K_16 2
#define R_68K_8 3
#define R_68K_PC32 4
#define R_68K_PC16 5
#define R_68K_PC8 6
#define R_68K_GOT32 7
#define R_68K_GOT16 8
#define R_68K_GOT8 9
#define R_68K_GOT32O 10
#define R_68K_GOT16O 11
#define R_68K_GOT8O 12
#define R_68K_PLT32 13
#define R_68K_PLT16 14
#define R_68K_PLT8 15
#define R_68K_PLT32O 16
#define R_68K_PLT16O 17
#define R_68K_PLT8O 18
#define R_68K_COPY 19
#define R_68K_GLOB_DAT 20
#define R_68K_JMP_SLOT 21
#define R_68K_RELATIVE 22
/*
* Alpha ELF relocation types
*/
#define R_ALPHA_NONE 0 /* No reloc */
#define R_ALPHA_REFLONG 1 /* Direct 32 bit */
#define R_ALPHA_REFQUAD 2 /* Direct 64 bit */
#define R_ALPHA_GPREL32 3 /* GP relative 32 bit */
#define R_ALPHA_LITERAL 4 /* GP relative 16 bit w/optimization */
#define R_ALPHA_LITUSE 5 /* Optimization hint for LITERAL */
#define R_ALPHA_GPDISP 6 /* Add displacement to GP */
#define R_ALPHA_BRADDR 7 /* PC+4 relative 23 bit shifted */
#define R_ALPHA_HINT 8 /* PC+4 relative 16 bit shifted */
#define R_ALPHA_SREL16 9 /* PC relative 16 bit */
#define R_ALPHA_SREL32 10 /* PC relative 32 bit */
#define R_ALPHA_SREL64 11 /* PC relative 64 bit */
#define R_ALPHA_GPRELHIGH 17 /* GP relative 32 bit, high 16 bits */
#define R_ALPHA_GPRELLOW 18 /* GP relative 32 bit, low 16 bits */
#define R_ALPHA_GPREL16 19 /* GP relative 16 bit */
#define R_ALPHA_COPY 24 /* Copy symbol at runtime */
#define R_ALPHA_GLOB_DAT 25 /* Create GOT entry */
#define R_ALPHA_JMP_SLOT 26 /* Create PLT entry */
#define R_ALPHA_RELATIVE 27 /* Adjust by program base */
#define R_ALPHA_BRSGP 28
#define R_ALPHA_TLSGD 29
#define R_ALPHA_TLS_LDM 30
#define R_ALPHA_DTPMOD64 31
#define R_ALPHA_GOTDTPREL 32
#define R_ALPHA_DTPREL64 33
#define R_ALPHA_DTPRELHI 34
#define R_ALPHA_DTPRELLO 35
#define R_ALPHA_DTPREL16 36
#define R_ALPHA_GOTTPREL 37
#define R_ALPHA_TPREL64 38
#define R_ALPHA_TPRELHI 39
#define R_ALPHA_TPRELLO 40
#define R_ALPHA_TPREL16 41
#define SHF_ALPHA_GPREL 0x10000000
/* PowerPC relocations defined by the ABIs */
#define R_PPC_NONE 0
#define R_PPC_ADDR32 1 /* 32bit absolute address */
#define R_PPC_ADDR24 2 /* 26bit address, 2 bits ignored. */
#define R_PPC_ADDR16 3 /* 16bit absolute address */
#define R_PPC_ADDR16_LO 4 /* lower 16bit of absolute address */
#define R_PPC_ADDR16_HI 5 /* high 16bit of absolute address */
#define R_PPC_ADDR16_HA 6 /* adjusted high 16bit */
#define R_PPC_ADDR14 7 /* 16bit address, 2 bits ignored */
#define R_PPC_ADDR14_BRTAKEN 8
#define R_PPC_ADDR14_BRNTAKEN 9
#define R_PPC_REL24 10 /* PC relative 26 bit */
#define R_PPC_REL14 11 /* PC relative 16 bit */
#define R_PPC_REL14_BRTAKEN 12
#define R_PPC_REL14_BRNTAKEN 13
#define R_PPC_GOT16 14
#define R_PPC_GOT16_LO 15
#define R_PPC_GOT16_HI 16
#define R_PPC_GOT16_HA 17
#define R_PPC_PLTREL24 18
#define R_PPC_COPY 19
#define R_PPC_GLOB_DAT 20
#define R_PPC_JMP_SLOT 21
#define R_PPC_RELATIVE 22
#define R_PPC_LOCAL24PC 23
#define R_PPC_UADDR32 24
#define R_PPC_UADDR16 25
#define R_PPC_REL32 26
#define R_PPC_PLT32 27
#define R_PPC_PLTREL32 28
#define R_PPC_PLT16_LO 29
#define R_PPC_PLT16_HI 30
#define R_PPC_PLT16_HA 31
#define R_PPC_SDAREL16 32
#define R_PPC_SECTOFF 33
#define R_PPC_SECTOFF_LO 34
#define R_PPC_SECTOFF_HI 35
#define R_PPC_SECTOFF_HA 36
/* Keep this the last entry. */
#define R_PPC_NUM 37
/* ARM specific declarations */
/* Processor specific flags for the ELF header e_flags field. */
#define EF_ARM_RELEXEC 0x01
#define EF_ARM_HASENTRY 0x02
#define EF_ARM_INTERWORK 0x04
#define EF_ARM_APCS_26 0x08
#define EF_ARM_APCS_FLOAT 0x10
#define EF_ARM_PIC 0x20
#define EF_ALIGN8 0x40 /* 8-bit structure alignment is in use */
#define EF_NEW_ABI 0x80
#define EF_OLD_ABI 0x100
/* Additional symbol types for Thumb */
#define STT_ARM_TFUNC 0xd
/* ARM-specific values for sh_flags */
#define SHF_ARM_ENTRYSECT 0x10000000 /* Section contains an entry point */
#define SHF_ARM_COMDEF 0x80000000 /* Section may be multiply defined
in the input to a link step */
/* ARM-specific program header flags */
#define PF_ARM_SB 0x10000000 /* Segment contains the location
addressed by the static base */
/* ARM relocs. */
#define R_ARM_NONE 0 /* No reloc */
#define R_ARM_PC24 1 /* PC relative 26 bit branch */
#define R_ARM_ABS32 2 /* Direct 32 bit */
#define R_ARM_REL32 3 /* PC relative 32 bit */
#define R_ARM_PC13 4
#define R_ARM_ABS16 5 /* Direct 16 bit */
#define R_ARM_ABS12 6 /* Direct 12 bit */
#define R_ARM_THM_ABS5 7
#define R_ARM_ABS8 8 /* Direct 8 bit */
#define R_ARM_SBREL32 9
#define R_ARM_THM_PC22 10
#define R_ARM_THM_PC8 11
#define R_ARM_AMP_VCALL9 12
#define R_ARM_SWI24 13
#define R_ARM_THM_SWI8 14
#define R_ARM_XPC25 15
#define R_ARM_THM_XPC22 16
#define R_ARM_COPY 20 /* Copy symbol at runtime */
#define R_ARM_GLOB_DAT 21 /* Create GOT entry */
#define R_ARM_JUMP_SLOT 22 /* Create PLT entry */
#define R_ARM_RELATIVE 23 /* Adjust by program base */
#define R_ARM_GOTOFF 24 /* 32 bit offset to GOT */
#define R_ARM_GOTPC 25 /* 32 bit PC relative offset to GOT */
#define R_ARM_GOT32 26 /* 32 bit GOT entry */
#define R_ARM_PLT32 27 /* 32 bit PLT address */
#define R_ARM_CALL 28
#define R_ARM_JUMP24 29
#define R_ARM_GNU_VTENTRY 100
#define R_ARM_GNU_VTINHERIT 101
#define R_ARM_THM_PC11 102 /* thumb unconditional branch */
#define R_ARM_THM_PC9 103 /* thumb conditional branch */
#define R_ARM_RXPC25 249
#define R_ARM_RSBREL32 250
#define R_ARM_THM_RPC22 251
#define R_ARM_RREL32 252
#define R_ARM_RABS22 253
#define R_ARM_RPC24 254
#define R_ARM_RBASE 255
/* Keep this the last entry. */
#define R_ARM_NUM 256
/* s390 relocations defined by the ABIs */
#define R_390_NONE 0 /* No reloc. */
#define R_390_8 1 /* Direct 8 bit. */
#define R_390_12 2 /* Direct 12 bit. */
#define R_390_16 3 /* Direct 16 bit. */
#define R_390_32 4 /* Direct 32 bit. */
#define R_390_PC32 5 /* PC relative 32 bit. */
#define R_390_GOT12 6 /* 12 bit GOT offset. */
#define R_390_GOT32 7 /* 32 bit GOT offset. */
#define R_390_PLT32 8 /* 32 bit PC relative PLT address. */
#define R_390_COPY 9 /* Copy symbol at runtime. */
#define R_390_GLOB_DAT 10 /* Create GOT entry. */
#define R_390_JMP_SLOT 11 /* Create PLT entry. */
#define R_390_RELATIVE 12 /* Adjust by program base. */
#define R_390_GOTOFF32 13 /* 32 bit offset to GOT. */
#define R_390_GOTPC 14 /* 32 bit PC rel. offset to GOT. */
#define R_390_GOT16 15 /* 16 bit GOT offset. */
#define R_390_PC16 16 /* PC relative 16 bit. */
#define R_390_PC16DBL 17 /* PC relative 16 bit shifted by 1. */
#define R_390_PLT16DBL 18 /* 16 bit PC rel. PLT shifted by 1. */
#define R_390_PC32DBL 19 /* PC relative 32 bit shifted by 1. */
#define R_390_PLT32DBL 20 /* 32 bit PC rel. PLT shifted by 1. */
#define R_390_GOTPCDBL 21 /* 32 bit PC rel. GOT shifted by 1. */
#define R_390_64 22 /* Direct 64 bit. */
#define R_390_PC64 23 /* PC relative 64 bit. */
#define R_390_GOT64 24 /* 64 bit GOT offset. */
#define R_390_PLT64 25 /* 64 bit PC relative PLT address. */
#define R_390_GOTENT 26 /* 32 bit PC rel. to GOT entry >> 1. */
#define R_390_GOTOFF16 27 /* 16 bit offset to GOT. */
#define R_390_GOTOFF64 28 /* 64 bit offset to GOT. */
#define R_390_GOTPLT12 29 /* 12 bit offset to jump slot. */
#define R_390_GOTPLT16 30 /* 16 bit offset to jump slot. */
#define R_390_GOTPLT32 31 /* 32 bit offset to jump slot. */
#define R_390_GOTPLT64 32 /* 64 bit offset to jump slot. */
#define R_390_GOTPLTENT 33 /* 32 bit rel. offset to jump slot. */
#define R_390_PLTOFF16 34 /* 16 bit offset from GOT to PLT. */
#define R_390_PLTOFF32 35 /* 32 bit offset from GOT to PLT. */
#define R_390_PLTOFF64 36 /* 16 bit offset from GOT to PLT. */
#define R_390_TLS_LOAD 37 /* Tag for load insn in TLS code. */
#define R_390_TLS_GDCALL 38 /* Tag for function call in general
dynamic TLS code. */
#define R_390_TLS_LDCALL 39 /* Tag for function call in local
dynamic TLS code. */
#define R_390_TLS_GD32 40 /* Direct 32 bit for general dynamic
thread local data. */
#define R_390_TLS_GD64 41 /* Direct 64 bit for general dynamic
thread local data. */
#define R_390_TLS_GOTIE12 42 /* 12 bit GOT offset for static TLS
block offset. */
#define R_390_TLS_GOTIE32 43 /* 32 bit GOT offset for static TLS
block offset. */
#define R_390_TLS_GOTIE64 44 /* 64 bit GOT offset for static TLS
block offset. */
#define R_390_TLS_LDM32 45 /* Direct 32 bit for local dynamic
thread local data in LD code. */
#define R_390_TLS_LDM64 46 /* Direct 64 bit for local dynamic
thread local data in LD code. */
#define R_390_TLS_IE32 47 /* 32 bit address of GOT entry for
negated static TLS block offset. */
#define R_390_TLS_IE64 48 /* 64 bit address of GOT entry for
negated static TLS block offset. */
#define R_390_TLS_IEENT 49 /* 32 bit rel. offset to GOT entry for
negated static TLS block offset. */
#define R_390_TLS_LE32 50 /* 32 bit negated offset relative to
static TLS block. */
#define R_390_TLS_LE64 51 /* 64 bit negated offset relative to
static TLS block. */
#define R_390_TLS_LDO32 52 /* 32 bit offset relative to TLS
block. */
#define R_390_TLS_LDO64 53 /* 64 bit offset relative to TLS
block. */
#define R_390_TLS_DTPMOD 54 /* ID of module containing symbol. */
#define R_390_TLS_DTPOFF 55 /* Offset in TLS block. */
#define R_390_TLS_TPOFF 56 /* Negate offset in static TLS
block. */
/* Keep this the last entry. */
#define R_390_NUM 57
/* x86-64 relocation types */
#define R_X86_64_NONE 0 /* No reloc */
#define R_X86_64_64 1 /* Direct 64 bit */
#define R_X86_64_PC32 2 /* PC relative 32 bit signed */
#define R_X86_64_GOT32 3 /* 32 bit GOT entry */
#define R_X86_64_PLT32 4 /* 32 bit PLT address */
#define R_X86_64_COPY 5 /* Copy symbol at runtime */
#define R_X86_64_GLOB_DAT 6 /* Create GOT entry */
#define R_X86_64_JUMP_SLOT 7 /* Create PLT entry */
#define R_X86_64_RELATIVE 8 /* Adjust by program base */
#define R_X86_64_GOTPCREL 9 /* 32 bit signed pc relative
offset to GOT */
#define R_X86_64_32 10 /* Direct 32 bit zero extended */
#define R_X86_64_32S 11 /* Direct 32 bit sign extended */
#define R_X86_64_16 12 /* Direct 16 bit zero extended */
#define R_X86_64_PC16 13 /* 16 bit sign extended pc relative */
#define R_X86_64_8 14 /* Direct 8 bit sign extended */
#define R_X86_64_PC8 15 /* 8 bit sign extended pc relative */
#define R_X86_64_NUM 16
/* Legal values for e_flags field of Elf64_Ehdr. */
#define EF_ALPHA_32BIT 1 /* All addresses are below 2GB */
/* HPPA specific definitions. */
/* Legal values for e_flags field of Elf32_Ehdr. */
#define EF_PARISC_TRAPNIL 0x00010000 /* Trap nil pointer dereference. */
#define EF_PARISC_EXT 0x00020000 /* Program uses arch. extensions. */
#define EF_PARISC_LSB 0x00040000 /* Program expects little endian. */
#define EF_PARISC_WIDE 0x00080000 /* Program expects wide mode. */
#define EF_PARISC_NO_KABP 0x00100000 /* No kernel assisted branch
prediction. */
#define EF_PARISC_LAZYSWAP 0x00400000 /* Allow lazy swapping. */
#define EF_PARISC_ARCH 0x0000ffff /* Architecture version. */
/* Defined values for `e_flags & EF_PARISC_ARCH’ are: */
#define EFA_PARISC_1_0 0x020b /* PA-RISC 1.0 big-endian. */
#define EFA_PARISC_1_1 0x0210 /* PA-RISC 1.1 big-endian. */
#define EFA_PARISC_2_0 0x0214 /* PA-RISC 2.0 big-endian. */
/* Additional section indeces. */
#define SHN_PARISC_ANSI_COMMON 0xff00 /* Section for tenatively declared
symbols in ANSI C. */
#define SHN_PARISC_HUGE_COMMON 0xff01 /* Common blocks in huge model. */
/* Legal values for sh_type field of Elf32_Shdr. */
#define SHT_PARISC_EXT 0x70000000 /* Contains product specific ext. */
#define SHT_PARISC_UNWIND 0x70000001 /* Unwind information. */
#define SHT_PARISC_DOC 0x70000002 /* Debug info for optimized code. */
/* Legal values for sh_flags field of Elf32_Shdr. */
#define SHF_PARISC_SHORT 0x20000000 /* Section with short addressing. */
#define SHF_PARISC_HUGE 0x40000000 /* Section far from gp. */
#define SHF_PARISC_SBP 0x80000000 /* Static branch prediction code. */
/* Legal values for ST_TYPE subfield of st_info (symbol type). */
#define STT_PARISC_MILLICODE 13 /* Millicode function entry point. */
#define STT_HP_OPAQUE (STT_LOOS + 0x1)
#define STT_HP_STUB (STT_LOOS + 0x2)
/* HPPA relocs. */
#define R_PARISC_NONE 0 /* No reloc. */
#define R_PARISC_DIR32 1 /* Direct 32-bit reference. */
#define R_PARISC_DIR21L 2 /* Left 21 bits of eff. address. */
#define R_PARISC_DIR17R 3 /* Right 17 bits of eff. address. */
#define R_PARISC_DIR17F 4 /* 17 bits of eff. address. */
#define R_PARISC_DIR14R 6 /* Right 14 bits of eff. address. */
#define R_PARISC_PCREL32 9 /* 32-bit rel. address. */
#define R_PARISC_PCREL21L 10 /* Left 21 bits of rel. address. */
#define R_PARISC_PCREL17R 11 /* Right 17 bits of rel. address. */
#define R_PARISC_PCREL17F 12 /* 17 bits of rel. address. */
#define R_PARISC_PCREL14R 14 /* Right 14 bits of rel. address. */
#define R_PARISC_DPREL21L 18 /* Left 21 bits of rel. address. */
#define R_PARISC_DPREL14R 22 /* Right 14 bits of rel. address. */
#define R_PARISC_GPREL21L 26 /* GP-relative, left 21 bits. */
#define R_PARISC_GPREL14R 30 /* GP-relative, right 14 bits. */
#define R_PARISC_LTOFF21L 34 /* LT-relative, left 21 bits. */
#define R_PARISC_LTOFF14R 38 /* LT-relative, right 14 bits. */
#define R_PARISC_SECREL32 41 /* 32 bits section rel. address. */
#define R_PARISC_SEGBASE 48 /* No relocation, set segment base. */
#define R_PARISC_SEGREL32 49 /* 32 bits segment rel. address. */
#define R_PARISC_PLTOFF21L 50 /* PLT rel. address, left 21 bits. */
#define R_PARISC_PLTOFF14R 54 /* PLT rel. address, right 14 bits. */
#define R_PARISC_LTOFF_FPTR32 57 /* 32 bits LT-rel. function pointer. */
#define R_PARISC_LTOFF_FPTR21L 58 /* LT-rel. fct ptr, left 21 bits. */
#define R_PARISC_LTOFF_FPTR14R 62 /* LT-rel. fct ptr, right 14 bits. */
#define R_PARISC_FPTR64 64 /* 64 bits function address. */
#define R_PARISC_PLABEL32 65 /* 32 bits function address. */
#define R_PARISC_PCREL64 72 /* 64 bits PC-rel. address. */
#define R_PARISC_PCREL22F 74 /* 22 bits PC-rel. address. */
#define R_PARISC_PCREL14WR 75 /* PC-rel. address, right 14 bits. */
#define R_PARISC_PCREL14DR 76 /* PC rel. address, right 14 bits. */
#define R_PARISC_PCREL16F 77 /* 16 bits PC-rel. address. */
#define R_PARISC_PCREL16WF 78 /* 16 bits PC-rel. address. */
#define R_PARISC_PCREL16DF 79 /* 16 bits PC-rel. address. */
#define R_PARISC_DIR64 80 /* 64 bits of eff. address. */
#define R_PARISC_DIR14WR 83 /* 14 bits of eff. address. */
#define R_PARISC_DIR14DR 84 /* 14 bits of eff. address. */
#define R_PARISC_DIR16F 85 /* 16 bits of eff. address. */
#define R_PARISC_DIR16WF 86 /* 16 bits of eff. address. */
#define R_PARISC_DIR16DF 87 /* 16 bits of eff. address. */
#define R_PARISC_GPREL64 88 /* 64 bits of GP-rel. address. */
#define R_PARISC_GPREL14WR 91 /* GP-rel. address, right 14 bits. */
#define R_PARISC_GPREL14DR 92 /* GP-rel. address, right 14 bits. */
#define R_PARISC_GPREL16F 93 /* 16 bits GP-rel. address. */
#define R_PARISC_GPREL16WF 94 /* 16 bits GP-rel. address. */
#define R_PARISC_GPREL16DF 95 /* 16 bits GP-rel. address. */
#define R_PARISC_LTOFF64 96 /* 64 bits LT-rel. address. */
#define R_PARISC_LTOFF14WR 99 /* LT-rel. address, right 14 bits. */
#define R_PARISC_LTOFF14DR 100 /* LT-rel. address, right 14 bits. */
#define R_PARISC_LTOFF16F 101 /* 16 bits LT-rel. address. */
#define R_PARISC_LTOFF16WF 102 /* 16 bits LT-rel. address. */
#define R_PARISC_LTOFF16DF 103 /* 16 bits LT-rel. address. */
#define R_PARISC_SECREL64 104 /* 64 bits section rel. address. */
#define R_PARISC_SEGREL64 112 /* 64 bits segment rel. address. */
#define R_PARISC_PLTOFF14WR 115 /* PLT-rel. address, right 14 bits. */
#define R_PARISC_PLTOFF14DR 116 /* PLT-rel. address, right 14 bits. */
#define R_PARISC_PLTOFF16F 117 /* 16 bits LT-rel. address. */
#define R_PARISC_PLTOFF16WF 118 /* 16 bits PLT-rel. address. */
#define R_PARISC_PLTOFF16DF 119 /* 16 bits PLT-rel. address. */
#define R_PARISC_LTOFF_FPTR64 120 /* 64 bits LT-rel. function ptr. */
#define R_PARISC_LTOFF_FPTR14WR 123 /* LT-rel. fct. ptr., right 14 bits. */
#define R_PARISC_LTOFF_FPTR14DR 124 /* LT-rel. fct. ptr., right 14 bits. */
#define R_PARISC_LTOFF_FPTR16F 125 /* 16 bits LT-rel. function ptr. */
#define R_PARISC_LTOFF_FPTR16WF 126 /* 16 bits LT-rel. function ptr. */
#define R_PARISC_LTOFF_FPTR16DF 127 /* 16 bits LT-rel. function ptr. */
#define R_PARISC_LORESERVE 128
#define R_PARISC_COPY 128 /* Copy relocation. */
#define R_PARISC_IPLT 129 /* Dynamic reloc, imported PLT */
#define R_PARISC_EPLT 130 /* Dynamic reloc, exported PLT */
#define R_PARISC_TPREL32 153 /* 32 bits TP-rel. address. */
#define R_PARISC_TPREL21L 154 /* TP-rel. address, left 21 bits. */
#define R_PARISC_TPREL14R 158 /* TP-rel. address, right 14 bits. */
#define R_PARISC_LTOFF_TP21L 162 /* LT-TP-rel. address, left 21 bits. */
#define R_PARISC_LTOFF_TP14R 166 /* LT-TP-rel. address, right 14 bits.*/
#define R_PARISC_LTOFF_TP14F 167 /* 14 bits LT-TP-rel. address. */
#define R_PARISC_TPREL64 216 /* 64 bits TP-rel. address. */
#define R_PARISC_TPREL14WR 219 /* TP-rel. address, right 14 bits. */
#define R_PARISC_TPREL14DR 220 /* TP-rel. address, right 14 bits. */
#define R_PARISC_TPREL16F 221 /* 16 bits TP-rel. address. */
#define R_PARISC_TPREL16WF 222 /* 16 bits TP-rel. address. */
#define R_PARISC_TPREL16DF 223 /* 16 bits TP-rel. address. */
#define R_PARISC_LTOFF_TP64 224 /* 64 bits LT-TP-rel. address. */
#define R_PARISC_LTOFF_TP14WR 227 /* LT-TP-rel. address, right 14 bits.*/
#define R_PARISC_LTOFF_TP14DR 228 /* LT-TP-rel. address, right 14 bits.*/
#define R_PARISC_LTOFF_TP16F 229 /* 16 bits LT-TP-rel. address. */
#define R_PARISC_LTOFF_TP16WF 230 /* 16 bits LT-TP-rel. address. */
#define R_PARISC_LTOFF_TP16DF 231 /* 16 bits LT-TP-rel. address. */
#define R_PARISC_HIRESERVE 255
/* Legal values for p_type field of Elf32_Phdr/Elf64_Phdr. */
#define PT_HP_TLS (PT_LOOS + 0x0)
#define PT_HP_CORE_NONE (PT_LOOS + 0x1)
#define PT_HP_CORE_VERSION (PT_LOOS + 0x2)
#define PT_HP_CORE_KERNEL (PT_LOOS + 0x3)
#define PT_HP_CORE_COMM (PT_LOOS + 0x4)
#define PT_HP_CORE_PROC (PT_LOOS + 0x5)
#define PT_HP_CORE_LOADABLE (PT_LOOS + 0x6)
#define PT_HP_CORE_STACK (PT_LOOS + 0x7)
#define PT_HP_CORE_SHM (PT_LOOS + 0x8)
#define PT_HP_CORE_MMF (PT_LOOS + 0x9)
#define PT_HP_PARALLEL (PT_LOOS + 0x10)
#define PT_HP_FASTBIND (PT_LOOS + 0x11)
#define PT_HP_OPT_ANNOT (PT_LOOS + 0x12)
#define PT_HP_HSL_ANNOT (PT_LOOS + 0x13)
#define PT_HP_STACK (PT_LOOS + 0x14)
#define PT_PARISC_ARCHEXT 0x70000000
#define PT_PARISC_UNWIND 0x70000001
/* Legal values for p_flags field of Elf32_Phdr/Elf64_Phdr. */
#define PF_PARISC_SBP 0x08000000
#define PF_HP_PAGE_SIZE 0x00100000
#define PF_HP_FAR_SHARED 0x00200000
#define PF_HP_NEAR_SHARED 0x00400000
#define PF_HP_CODE 0x01000000
#define PF_HP_MODIFY 0x02000000
#define PF_HP_LAZYSWAP 0x04000000
#define PF_HP_SBP 0x08000000
/* IA-64 specific declarations. */
/* Processor specific flags for the Ehdr e_flags field. */
#define EF_IA_64_MASKOS 0x0000000f /* os-specific flags */
#define EF_IA_64_ABI64 0x00000010 /* 64-bit ABI */
#define EF_IA_64_ARCH 0xff000000 /* arch. version mask */
/* Processor specific values for the Phdr p_type field. */
#define PT_IA_64_ARCHEXT (PT_LOPROC + 0) /* arch extension bits */
#define PT_IA_64_UNWIND (PT_LOPROC + 1) /* ia64 unwind bits */
/* Processor specific flags for the Phdr p_flags field. */
#define PF_IA_64_NORECOV 0x80000000 /* spec insns w/o recovery */
/* Processor specific values for the Shdr sh_type field. */
#define SHT_IA_64_EXT (SHT_LOPROC + 0) /* extension bits */
#define SHT_IA_64_UNWIND (SHT_LOPROC + 1) /* unwind bits */
/* Processor specific flags for the Shdr sh_flags field. */
#define SHF_IA_64_SHORT 0x10000000 /* section near gp */
#define SHF_IA_64_NORECOV 0x20000000 /* spec insns w/o recovery */
/* Processor specific values for the Dyn d_tag field. */
#define DT_IA_64_PLT_RESERVE (DT_LOPROC + 0)
#define DT_IA_64_NUM 1
/* IA-64 relocations. */
#define R_IA64_NONE 0x00 /* none */
#define R_IA64_IMM14 0x21 /* symbol + addend, add imm14 */
#define R_IA64_IMM22 0x22 /* symbol + addend, add imm22 */
#define R_IA64_IMM64 0x23 /* symbol + addend, mov imm64 */
#define R_IA64_DIR32MSB 0x24 /* symbol + addend, data4 MSB */
#define R_IA64_DIR32LSB 0x25 /* symbol + addend, data4 LSB */
#define R_IA64_DIR64MSB 0x26 /* symbol + addend, data8 MSB */
#define R_IA64_DIR64LSB 0x27 /* symbol + addend, data8 LSB */
#define R_IA64_GPREL22 0x2a /* @gprel(sym + add), add imm22 */
#define R_IA64_GPREL64I 0x2b /* @gprel(sym + add), mov imm64 */
#define R_IA64_GPREL32MSB 0x2c /* @gprel(sym + add), data4 MSB */
#define R_IA64_GPREL32LSB 0x2d /* @gprel(sym + add), data4 LSB */
#define R_IA64_GPREL64MSB 0x2e /* @gprel(sym + add), data8 MSB */
#define R_IA64_GPREL64LSB 0x2f /* @gprel(sym + add), data8 LSB */
#define R_IA64_LTOFF22 0x32 /* @ltoff(sym + add), add imm22 */
#define R_IA64_LTOFF64I 0x33 /* @ltoff(sym + add), mov imm64 */
#define R_IA64_PLTOFF22 0x3a /* @pltoff(sym + add), add imm22 */
#define R_IA64_PLTOFF64I 0x3b /* @pltoff(sym + add), mov imm64 */
#define R_IA64_PLTOFF64MSB 0x3e /* @pltoff(sym + add), data8 MSB */
#define R_IA64_PLTOFF64LSB 0x3f /* @pltoff(sym + add), data8 LSB */
#define R_IA64_FPTR64I 0x43 /* @fptr(sym + add), mov imm64 */
#define R_IA64_FPTR32MSB 0x44 /* @fptr(sym + add), data4 MSB */
#define R_IA64_FPTR32LSB 0x45 /* @fptr(sym + add), data4 LSB */
#define R_IA64_FPTR64MSB 0x46 /* @fptr(sym + add), data8 MSB */
#define R_IA64_FPTR64LSB 0x47 /* @fptr(sym + add), data8 LSB */
#define R_IA64_PCREL60B 0x48 /* @pcrel(sym + add), brl */
#define R_IA64_PCREL21B 0x49 /* @pcrel(sym + add), ptb, call */
#define R_IA64_PCREL21M 0x4a /* @pcrel(sym + add), chk.s */
#define R_IA64_PCREL21F 0x4b /* @pcrel(sym + add), fchkf */
#define R_IA64_PCREL32MSB 0x4c /* @pcrel(sym + add), data4 MSB */
#define R_IA64_PCREL32LSB 0x4d /* @pcrel(sym + add), data4 LSB */
#define R_IA64_PCREL64MSB 0x4e /* @pcrel(sym + add), data8 MSB */
#define R_IA64_PCREL64LSB 0x4f /* @pcrel(sym + add), data8 LSB */
#define R_IA64_LTOFF_FPTR22 0x52 /* @ltoff(@fptr(s+a)), imm22 */
#define R_IA64_LTOFF_FPTR64I 0x53 /* @ltoff(@fptr(s+a)), imm64 */
#define R_IA64_LTOFF_FPTR32MSB 0x54 /* @ltoff(@fptr(s+a)), data4 MSB */
#define R_IA64_LTOFF_FPTR32LSB 0x55 /* @ltoff(@fptr(s+a)), data4 LSB */
#define R_IA64_LTOFF_FPTR64MSB 0x56 /* @ltoff(@fptr(s+a)), data8 MSB */
#define R_IA64_LTOFF_FPTR64LSB 0x57 /* @ltoff(@fptr(s+a)), data8 LSB */
#define R_IA64_SEGREL32MSB 0x5c /* @segrel(sym + add), data4 MSB */
#define R_IA64_SEGREL32LSB 0x5d /* @segrel(sym + add), data4 LSB */
#define R_IA64_SEGREL64MSB 0x5e /* @segrel(sym + add), data8 MSB */
#define R_IA64_SEGREL64LSB 0x5f /* @segrel(sym + add), data8 LSB */
#define R_IA64_SECREL32MSB 0x64 /* @secrel(sym + add), data4 MSB */
#define R_IA64_SECREL32LSB 0x65 /* @secrel(sym + add), data4 LSB */
#define R_IA64_SECREL64MSB 0x66 /* @secrel(sym + add), data8 MSB */
#define R_IA64_SECREL64LSB 0x67 /* @secrel(sym + add), data8 LSB */
#define R_IA64_REL32MSB 0x6c /* data 4 + REL */
#define R_IA64_REL32LSB 0x6d /* data 4 + REL */
#define R_IA64_REL64MSB 0x6e /* data 8 + REL */
#define R_IA64_REL64LSB 0x6f /* data 8 + REL */
#define R_IA64_LTV32MSB 0x74 /* symbol + addend, data4 MSB */
#define R_IA64_LTV32LSB 0x75 /* symbol + addend, data4 LSB */
#define R_IA64_LTV64MSB 0x76 /* symbol + addend, data8 MSB */
#define R_IA64_LTV64LSB 0x77 /* symbol + addend, data8 LSB */
#define R_IA64_PCREL21BI 0x79 /* @pcrel(sym + add), 21bit inst */
#define R_IA64_PCREL22 0x7a /* @pcrel(sym + add), 22bit inst */
#define R_IA64_PCREL64I 0x7b /* @pcrel(sym + add), 64bit inst */
#define R_IA64_IPLTMSB 0x80 /* dynamic reloc, imported PLT, MSB */
#define R_IA64_IPLTLSB 0x81 /* dynamic reloc, imported PLT, LSB */
#define R_IA64_COPY 0x84 /* copy relocation */
#define R_IA64_SUB 0x85 /* Addend and symbol difference */
#define R_IA64_LTOFF22X 0x86 /* LTOFF22, relaxable. */
#define R_IA64_LDXMOV 0x87 /* Use of LTOFF22X. */
#define R_IA64_TPREL14 0x91 /* @tprel(sym + add), imm14 */
#define R_IA64_TPREL22 0x92 /* @tprel(sym + add), imm22 */
#define R_IA64_TPREL64I 0x93 /* @tprel(sym + add), imm64 */
#define R_IA64_TPREL64MSB 0x96 /* @tprel(sym + add), data8 MSB */
#define R_IA64_TPREL64LSB 0x97 /* @tprel(sym + add), data8 LSB */
#define R_IA64_LTOFF_TPREL22 0x9a /* @ltoff(@tprel(s+a)), imm2 */
#define R_IA64_DTPMOD64MSB 0xa6 /* @dtpmod(sym + add), data8 MSB */
#define R_IA64_DTPMOD64LSB 0xa7 /* @dtpmod(sym + add), data8 LSB */
#define R_IA64_LTOFF_DTPMOD22 0xaa /* @ltoff(@dtpmod(sym + add)), imm22 */
#define R_IA64_DTPREL14 0xb1 /* @dtprel(sym + add), imm14 */
#define R_IA64_DTPREL22 0xb2 /* @dtprel(sym + add), imm22 */
#define R_IA64_DTPREL64I 0xb3 /* @dtprel(sym + add), imm64 */
#define R_IA64_DTPREL32MSB 0xb4 /* @dtprel(sym + add), data4 MSB */
#define R_IA64_DTPREL32LSB 0xb5 /* @dtprel(sym + add), data4 LSB */
#define R_IA64_DTPREL64MSB 0xb6 /* @dtprel(sym + add), data8 MSB */
#define R_IA64_DTPREL64LSB 0xb7 /* @dtprel(sym + add), data8 LSB */
#define R_IA64_LTOFF_DTPREL22 0xba /* @ltoff(@dtprel(s+a)), imm22 */
typedef struct elf32_rel {
Elf32_Addr r_offset;
Elf32_Word r_info;
} Elf32_Rel;
typedef struct elf64_rel {
Elf64_Addr r_offset; /* Location at which to apply the action */
Elf64_Xword r_info; /* index and type of relocation */
} Elf64_Rel;
typedef struct elf32_rela{
Elf32_Addr r_offset;
Elf32_Word r_info;
Elf32_Sword r_addend;
} Elf32_Rela;
typedef struct elf64_rela {
Elf64_Addr r_offset; /* Location at which to apply the action */
Elf64_Xword r_info; /* index and type of relocation */
Elf64_Sxword r_addend; /* Constant addend used to compute value */
} Elf64_Rela;
typedef struct elf32_sym{
Elf32_Word st_name;
Elf32_Addr st_value;
Elf32_Word st_size;
unsigned char st_info;
unsigned char st_other;
Elf32_Half st_shndx;
} Elf32_Sym;
typedef struct elf64_sym {
Elf64_Word st_name; /* Symbol name, index in string tbl */
unsigned char st_info; /* Type and binding attributes */
unsigned char st_other; /* No defined meaning, 0 */
Elf64_Half st_shndx; /* Associated section index */
Elf64_Addr st_value; /* Value of the symbol */
Elf64_Xword st_size; /* Associated symbol size */
} Elf64_Sym;
#define EI_NIDENT 16
typedef struct elf32_hdr{
unsigned 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_hdr {
unsigned char e_ident[16]; /* ELF “magic number” */
Elf64_Half e_type;
Elf64_Half e_machine;
Elf64_Word e_version;
Elf64_Addr e_entry; /* Entry point virtual address */
Elf64_Off e_phoff; /* Program header table file offset */
Elf64_Off e_shoff; /* Section header table file offset */
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;
/* These constants define the permissions on sections in the program
header, p_flags. */
#define PF_R 0x4
#define PF_W 0x2
#define PF_X 0x1
typedef struct elf32_phdr{
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_phdr {
Elf64_Word p_type;
Elf64_Word p_flags;
Elf64_Off p_offset; /* Segment file offset */
Elf64_Addr p_vaddr; /* Segment virtual address */
Elf64_Addr p_paddr; /* Segment physical address */
Elf64_Xword p_filesz; /* Segment size in file */
Elf64_Xword p_memsz; /* Segment size in memory */
Elf64_Xword p_align; /* Segment alignment, file & memory */
} Elf64_Phdr;
/* sh_type */
#define SHT_NULL 0
#define SHT_PROGBITS 1
#define SHT_SYMTAB 2
#define SHT_STRTAB 3
#define SHT_RELA 4
#define SHT_HASH 5
#define SHT_DYNAMIC 6
#define SHT_NOTE 7
#define SHT_NOBITS 8
#define SHT_REL 9
#define SHT_SHLIB 10
#define SHT_DYNSYM 11
#define SHT_NUM 12
#define SHT_LOPROC 0x70000000
#define SHT_HIPROC 0x7fffffff
#define SHT_LOUSER 0x80000000
#define SHT_HIUSER 0xffffffff
#define SHT_MIPS_LIST 0x70000000
#define SHT_MIPS_CONFLICT 0x70000002
#define SHT_MIPS_GPTAB 0x70000003
#define SHT_MIPS_UCODE 0x70000004
/* sh_flags */
#define SHF_WRITE 0x1
#define SHF_ALLOC 0x2
#define SHF_EXECINSTR 0x4
#define SHF_MASKPROC 0xf0000000
#define SHF_MIPS_GPREL 0x10000000
/* special section indexes */
#define SHN_UNDEF 0
#define SHN_LORESERVE 0xff00
#define SHN_LOPROC 0xff00
#define SHN_HIPROC 0xff1f
#define SHN_ABS 0xfff1
#define SHN_COMMON 0xfff2
#define SHN_HIRESERVE 0xffff
#define SHN_MIPS_ACCOMON 0xff00
typedef struct elf32_shdr {
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_shdr {
Elf64_Word sh_name; /* Section name, index in string tbl */
Elf64_Word sh_type; /* Type of section */
Elf64_Xword sh_flags; /* Miscellaneous section attributes */
Elf64_Addr sh_addr; /* Section virtual addr at execution */
Elf64_Off sh_offset; /* Section file offset */
Elf64_Xword sh_size; /* Size of section in bytes */
Elf64_Word sh_link; /* Index of another section */
Elf64_Word sh_info; /* Additional section information */
Elf64_Xword sh_addralign; /* Section alignment */
Elf64_Xword sh_entsize; /* Entry size if section holds table */
} Elf64_Shdr;
#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 SELFMAG 4
#define ELFCLASSNONE 0 /* EI_CLASS */
#define ELFCLASS32 1
#define ELFCLASS64 2
#define ELFCLASSNUM 3
#define ELFDATANONE 0 /* e_ident[EI_DATA] */
#define ELFDATA2LSB 1
#define ELFDATA2MSB 2
#define EV_NONE 0 /* e_version, EI_VERSION */
#define EV_CURRENT 1
#define EV_NUM 2
/* Notes used in ET_CORE */
#define NT_PRSTATUS 1
#define NT_PRFPREG 2
#define NT_PRPSINFO 3
#define NT_TASKSTRUCT 4
#define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */
/* Note header in a PT_NOTE section */
typedef struct elf32_note {
Elf32_Word n_namesz; /* Name size */
Elf32_Word n_descsz; /* Content size */
Elf32_Word n_type; /* Content type */
} Elf32_Nhdr;
/* Note header in a PT_NOTE section */
typedef struct elf64_note {
Elf64_Word n_namesz; /* Name size */
Elf64_Word n_descsz; /* Content size */
Elf64_Word n_type; /* Content type */
} Elf64_Nhdr;
#if ELF_CLASS == ELFCLASS32
#define elfhdr elf32_hdr
#define elf_phdr elf32_phdr
#define elf_note elf32_note
#define elf_shdr elf32_shdr
#define elf_sym elf32_sym
#define elf_addr_t Elf32_Off
#ifdef ELF_USES_RELOCA
# define ELF_RELOC Elf32_Rela
#else
# define ELF_RELOC Elf32_Rel
#endif
#else
#define elfhdr elf64_hdr
#define elf_phdr elf64_phdr
#define elf_note elf64_note
#define elf_shdr elf64_shdr
#define elf_sym elf64_sym
#define elf_addr_t Elf64_Off
#ifdef ELF_USES_RELOCA
# define ELF_RELOC Elf64_Rela
#else
# define ELF_RELOC Elf64_Rel
#endif
#endif /* ELF_CLASS */
#ifndef ElfW
# if ELF_CLASS == ELFCLASS32
# define ElfW(x) Elf32_ ## x
# define ELFW(x) ELF32_ ## x
# else
# define ElfW(x) Elf64_ ## x
# define ELFW(x) ELF64_ ## x
# endif
#endif
#endif /* _QEMU_ELF_H */
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