632 lines
17 KiB
C
632 lines
17 KiB
C
/*
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* Copyright (C) 2001-2003 Hewlett-Packard Co.
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* Contributed by Stephane Eranian <eranian@hpl.hp.com>
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*
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* This file is part of the ELILO, the EFI Linux boot loader.
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*
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* GNU EFI is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* GNU EFI is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU EFI; see the file COPYING. If not, write to the Free
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* Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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* Please check out the elilo.txt for complete documentation on how
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* to use this program.
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*
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* Portions of this file are derived from the LILO/x86
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* Copyright 1992-1997 Werner Almesberger.
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*/
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#ifndef __LINUX_ELF_H__
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#define __LINUX_ELF_H__
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/*
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* This file was derived from <linux/elf.h>.
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*/
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#include <efi.h>
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/* 32-bit ELF base types. */
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typedef UINT32 Elf32_Addr;
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typedef UINT16 Elf32_Half;
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typedef UINT32 Elf32_Off;
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typedef INT32 Elf32_Sword;
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typedef UINT32 Elf32_Word;
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/* 64-bit ELF base types. */
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typedef UINT64 Elf64_Addr;
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typedef UINT16 Elf64_Half;
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typedef INT16 Elf64_SHalf;
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typedef UINT64 Elf64_Off;
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typedef INT64 Elf64_Sword;
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typedef UINT64 Elf64_Word;
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/* These constants are for the segment types stored in the image headers */
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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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#define PT_MIPS_REGINFO 0x70000000
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/* Flags in the e_flags field of the header */
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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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/* These constants define the different elf file types */
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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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/* These constants define the various ELF target machines */
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#define EM_NONE 0
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#define EM_M32 1
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#define EM_SPARC 2
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#define EM_386 3
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#define EM_68K 4
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#define EM_88K 5
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#define EM_486 6 /* Perhaps disused */
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#define EM_860 7
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#define EM_MIPS 8 /* MIPS R3000 (officially, big-endian only) */
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#define EM_MIPS_RS4_BE 10 /* MIPS R4000 big-endian */
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#define EM_PARISC 15 /* HPPA */
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#define EM_SPARC32PLUS 18 /* Sun's "v8plus" */
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#define EM_PPC 20 /* PowerPC */
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#define EM_SH 42 /* SuperH */
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#define EM_SPARCV9 43 /* SPARC v9 64-bit */
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#define EM_IA_64 50 /* HP/Intel IA-64 */
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/*
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* This is an interim value that we will use until the committee comes
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* up with a final number.
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*/
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#define EM_ALPHA 0x9026
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/* This is the info that is needed to parse the dynamic section of the file */
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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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#define DT_MIPS_RLD_VERSION 0x70000001
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#define DT_MIPS_TIME_STAMP 0x70000002
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#define DT_MIPS_ICHECKSUM 0x70000003
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#define DT_MIPS_IVERSION 0x70000004
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#define DT_MIPS_FLAGS 0x70000005
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# define RHF_NONE 0
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# define RHF_HARDWAY 1
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# define RHF_NOTPOT 2
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#define DT_MIPS_BASE_ADDRESS 0x70000006
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#define DT_MIPS_CONFLICT 0x70000008
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#define DT_MIPS_LIBLIST 0x70000009
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#define DT_MIPS_LOCAL_GOTNO 0x7000000a
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#define DT_MIPS_CONFLICTNO 0x7000000b
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#define DT_MIPS_LIBLISTNO 0x70000010
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#define DT_MIPS_SYMTABNO 0x70000011
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#define DT_MIPS_UNREFEXTNO 0x70000012
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#define DT_MIPS_GOTSYM 0x70000013
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#define DT_MIPS_HIPAGENO 0x70000014
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#define DT_MIPS_RLD_MAP 0x70000016
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/* This info is needed when parsing the symbol table */
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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 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 ELF32_ST_BIND(x) ((x) >> 4)
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#define ELF32_ST_TYPE(x) (((unsigned int) x) & 0xf)
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/* Symbolic values for the entries in the auxiliary table
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put on the initial stack */
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#define AT_NULL 0 /* end of vector */
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#define AT_IGNORE 1 /* entry should be ignored */
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#define AT_EXECFD 2 /* file descriptor of program */
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#define AT_PHDR 3 /* program headers for program */
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#define AT_PHENT 4 /* size of program header entry */
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#define AT_PHNUM 5 /* number of program headers */
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#define AT_PAGESZ 6 /* system page size */
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#define AT_BASE 7 /* base address of interpreter */
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#define AT_FLAGS 8 /* flags */
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#define AT_ENTRY 9 /* entry point of program */
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#define AT_NOTELF 10 /* program is not ELF */
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#define AT_UID 11 /* real uid */
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#define AT_EUID 12 /* effective uid */
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#define AT_GID 13 /* real gid */
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#define AT_EGID 14 /* effective gid */
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#define AT_PLATFORM 15 /* string identifying CPU for optimizations */
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#define AT_HWCAP 16 /* arch dependent hints at CPU capabilities */
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typedef struct dynamic{
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Elf32_Sword d_tag;
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union{
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Elf32_Sword 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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typedef struct {
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Elf64_Word d_tag; /* entry tag value */
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union {
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Elf64_Word d_val;
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Elf64_Word d_ptr;
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} d_un;
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} Elf64_Dyn;
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/* The following are used with relocations */
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#define ELF32_R_SYM(x) ((x) >> 8)
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#define ELF32_R_TYPE(x) ((x) & 0xff)
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#define R_386_NONE 0
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#define R_386_32 1
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#define R_386_PC32 2
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#define R_386_GOT32 3
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#define R_386_PLT32 4
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#define R_386_COPY 5
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#define R_386_GLOB_DAT 6
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#define R_386_JMP_SLOT 7
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#define R_386_RELATIVE 8
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#define R_386_GOTOFF 9
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#define R_386_GOTPC 10
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#define R_386_NUM 11
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#define R_MIPS_NONE 0
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#define R_MIPS_16 1
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#define R_MIPS_32 2
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#define R_MIPS_REL32 3
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#define R_MIPS_26 4
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#define R_MIPS_HI16 5
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#define R_MIPS_LO16 6
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#define R_MIPS_GPREL16 7
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#define R_MIPS_LITERAL 8
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#define R_MIPS_GOT16 9
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#define R_MIPS_PC16 10
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#define R_MIPS_CALL16 11
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#define R_MIPS_GPREL32 12
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/* The remaining relocs are defined on Irix, although they are not
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in the MIPS ELF ABI. */
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#define R_MIPS_UNUSED1 13
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#define R_MIPS_UNUSED2 14
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#define R_MIPS_UNUSED3 15
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#define R_MIPS_SHIFT5 16
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#define R_MIPS_SHIFT6 17
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#define R_MIPS_64 18
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#define R_MIPS_GOT_DISP 19
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#define R_MIPS_GOT_PAGE 20
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#define R_MIPS_GOT_OFST 21
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/*
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* The following two relocation types are specified in the the MIPS ABI
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* conformance guide version 1.2 but not yet in the psABI.
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*/
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#define R_MIPS_GOTHI16 22
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#define R_MIPS_GOTLO16 23
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#define R_MIPS_SUB 24
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#define R_MIPS_INSERT_A 25
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#define R_MIPS_INSERT_B 26
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#define R_MIPS_DELETE 27
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#define R_MIPS_HIGHER 28
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#define R_MIPS_HIGHEST 29
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/*
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* The following two relocation types are specified in the the MIPS ABI
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* conformance guide version 1.2 but not yet in the psABI.
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*/
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#define R_MIPS_CALLHI16 30
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#define R_MIPS_CALLLO16 31
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/*
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* This range is reserved for vendor specific relocations.
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*/
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#define R_MIPS_LOVENDOR 100
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#define R_MIPS_HIVENDOR 127
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/*
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* Sparc ELF relocation types
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*/
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#define R_SPARC_NONE 0
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#define R_SPARC_8 1
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#define R_SPARC_16 2
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#define R_SPARC_32 3
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#define R_SPARC_DISP8 4
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#define R_SPARC_DISP16 5
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#define R_SPARC_DISP32 6
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#define R_SPARC_WDISP30 7
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#define R_SPARC_WDISP22 8
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#define R_SPARC_HI22 9
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#define R_SPARC_22 10
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#define R_SPARC_13 11
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#define R_SPARC_LO10 12
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#define R_SPARC_GOT10 13
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#define R_SPARC_GOT13 14
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#define R_SPARC_GOT22 15
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#define R_SPARC_PC10 16
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#define R_SPARC_PC22 17
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#define R_SPARC_WPLT30 18
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#define R_SPARC_COPY 19
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#define R_SPARC_GLOB_DAT 20
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#define R_SPARC_JMP_SLOT 21
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#define R_SPARC_RELATIVE 22
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#define R_SPARC_UA32 23
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#define R_SPARC_PLT32 24
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#define R_SPARC_HIPLT22 25
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#define R_SPARC_LOPLT10 26
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#define R_SPARC_PCPLT32 27
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#define R_SPARC_PCPLT22 28
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#define R_SPARC_PCPLT10 29
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#define R_SPARC_10 30
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#define R_SPARC_11 31
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#define R_SPARC_WDISP16 40
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#define R_SPARC_WDISP19 41
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#define R_SPARC_7 43
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#define R_SPARC_5 44
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#define R_SPARC_6 45
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/* Bits present in AT_HWCAP, primarily for Sparc32. */
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#define HWCAP_SPARC_FLUSH 1 /* CPU supports flush instruction. */
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#define HWCAP_SPARC_STBAR 2
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#define HWCAP_SPARC_SWAP 4
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#define HWCAP_SPARC_MULDIV 8
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#define HWCAP_SPARC_V9 16
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/*
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* 68k ELF relocation types
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*/
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#define R_68K_NONE 0
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#define R_68K_32 1
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#define R_68K_16 2
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#define R_68K_8 3
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#define R_68K_PC32 4
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#define R_68K_PC16 5
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#define R_68K_PC8 6
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#define R_68K_GOT32 7
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#define R_68K_GOT16 8
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#define R_68K_GOT8 9
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#define R_68K_GOT32O 10
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#define R_68K_GOT16O 11
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#define R_68K_GOT8O 12
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#define R_68K_PLT32 13
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#define R_68K_PLT16 14
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#define R_68K_PLT8 15
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#define R_68K_PLT32O 16
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#define R_68K_PLT16O 17
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#define R_68K_PLT8O 18
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#define R_68K_COPY 19
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#define R_68K_GLOB_DAT 20
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#define R_68K_JMP_SLOT 21
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#define R_68K_RELATIVE 22
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/*
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* Alpha ELF relocation types
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*/
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#define R_ALPHA_NONE 0 /* No reloc */
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#define R_ALPHA_REFLONG 1 /* Direct 32 bit */
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#define R_ALPHA_REFQUAD 2 /* Direct 64 bit */
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#define R_ALPHA_GPREL32 3 /* GP relative 32 bit */
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#define R_ALPHA_LITERAL 4 /* GP relative 16 bit w/optimization */
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#define R_ALPHA_LITUSE 5 /* Optimization hint for LITERAL */
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#define R_ALPHA_GPDISP 6 /* Add displacement to GP */
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#define R_ALPHA_BRADDR 7 /* PC+4 relative 23 bit shifted */
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#define R_ALPHA_HINT 8 /* PC+4 relative 16 bit shifted */
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#define R_ALPHA_SREL16 9 /* PC relative 16 bit */
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#define R_ALPHA_SREL32 10 /* PC relative 32 bit */
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#define R_ALPHA_SREL64 11 /* PC relative 64 bit */
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#define R_ALPHA_OP_PUSH 12 /* OP stack push */
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#define R_ALPHA_OP_STORE 13 /* OP stack pop and store */
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#define R_ALPHA_OP_PSUB 14 /* OP stack subtract */
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#define R_ALPHA_OP_PRSHIFT 15 /* OP stack right shift */
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#define R_ALPHA_GPVALUE 16
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#define R_ALPHA_GPRELHIGH 17
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#define R_ALPHA_GPRELLOW 18
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#define R_ALPHA_IMMED_GP_16 19
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#define R_ALPHA_IMMED_GP_HI32 20
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#define R_ALPHA_IMMED_SCN_HI32 21
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#define R_ALPHA_IMMED_BR_HI32 22
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#define R_ALPHA_IMMED_LO32 23
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#define R_ALPHA_COPY 24 /* Copy symbol at runtime */
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#define R_ALPHA_GLOB_DAT 25 /* Create GOT entry */
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#define R_ALPHA_JMP_SLOT 26 /* Create PLT entry */
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#define R_ALPHA_RELATIVE 27 /* Adjust by program base */
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/* Legal values for e_flags field of Elf64_Ehdr. */
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#define EF_ALPHA_32BIT 1 /* All addresses are below 2GB */
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typedef struct elf32_rel {
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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 elf64_rel {
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Elf64_Addr r_offset; /* Location at which to apply the action */
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Elf64_Word r_info; /* index and type of relocation */
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} Elf64_Rel;
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typedef struct elf32_rela{
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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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typedef struct elf64_rela {
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Elf64_Addr r_offset; /* Location at which to apply the action */
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Elf64_Word r_info; /* index and type of relocation */
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Elf64_Word r_addend; /* Constant addend used to compute value */
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} Elf64_Rela;
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typedef struct elf32_sym{
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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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typedef struct elf64_sym {
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Elf32_Word st_name; /* Symbol name, index in string tbl (yes, Elf32) */
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unsigned char st_info; /* Type and binding attributes */
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unsigned char st_other; /* No defined meaning, 0 */
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Elf64_Half st_shndx; /* Associated section index */
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Elf64_Addr st_value; /* Value of the symbol */
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Elf64_Word st_size; /* Associated symbol size */
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} Elf64_Sym;
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#define EI_NIDENT 16
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typedef struct elf32_hdr{
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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; /* Entry point */
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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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typedef struct elf64_hdr {
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unsigned char e_ident[16]; /* ELF "magic number" */
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Elf64_SHalf e_type;
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Elf64_Half e_machine;
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INT32 e_version;
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Elf64_Addr e_entry; /* Entry point virtual address */
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Elf64_Off e_phoff; /* Program header table file offset */
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Elf64_Off e_shoff; /* Section header table file offset */
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INT32 e_flags;
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Elf64_SHalf e_ehsize;
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Elf64_SHalf e_phentsize;
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Elf64_SHalf e_phnum;
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Elf64_SHalf e_shentsize;
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Elf64_SHalf e_shnum;
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Elf64_SHalf e_shstrndx;
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} Elf64_Ehdr;
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/* These constants define the permissions on sections in the program
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header, p_flags. */
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#define PF_R 0x4
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#define PF_W 0x2
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#define PF_X 0x1
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typedef struct elf32_phdr{
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Elf32_Word p_type;
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Elf32_Off p_offset;
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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 {
|
|
INT32 p_type;
|
|
INT32 p_flags;
|
|
Elf64_Off p_offset; /* Segment file offset */
|
|
Elf64_Addr p_vaddr; /* Segment virtual address */
|
|
Elf64_Addr p_paddr; /* Segment physical address */
|
|
Elf64_Word p_filesz; /* Segment size in file */
|
|
Elf64_Word p_memsz; /* Segment size in memory */
|
|
Elf64_Word 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_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 {
|
|
Elf32_Word sh_name; /* Section name, index in string tbl (yes Elf32) */
|
|
Elf32_Word sh_type; /* Type of section (yes Elf32) */
|
|
Elf64_Word sh_flags; /* Miscellaneous section attributes */
|
|
Elf64_Addr sh_addr; /* Section virtual addr at execution */
|
|
Elf64_Off sh_offset; /* Section file offset */
|
|
Elf64_Word sh_size; /* Size of section in bytes */
|
|
Elf32_Word sh_link; /* Index of another section (yes Elf32) */
|
|
Elf32_Word sh_info; /* Additional section information (yes Elf32) */
|
|
Elf64_Word sh_addralign; /* Section alignment */
|
|
Elf64_Word 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
|
|
|
|
/* 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 */
|
|
/*
|
|
* For now we use the 32 bit version of the structure until we figure
|
|
* out whether we need anything better. Note - on the Alpha, "unsigned int"
|
|
* is only 32 bits.
|
|
*/
|
|
typedef struct elf64_note {
|
|
Elf32_Word n_namesz; /* Name size */
|
|
Elf32_Word n_descsz; /* Content size */
|
|
Elf32_Word n_type; /* Content type */
|
|
} Elf64_Nhdr;
|
|
|
|
#if ELF_CLASS == ELFCLASS32
|
|
|
|
extern Elf32_Dyn _DYNAMIC [];
|
|
#define elfhdr elf32_hdr
|
|
#define elf_phdr elf32_phdr
|
|
#define elf_note elf32_note
|
|
|
|
#else
|
|
|
|
extern Elf64_Dyn _DYNAMIC [];
|
|
#define elfhdr elf64_hdr
|
|
#define elf_phdr elf64_phdr
|
|
#define elf_note elf64_note
|
|
|
|
#endif
|
|
|
|
|
|
#endif /* __LINUX_ELF_H__ */
|