/* * Copyright (C) 2001-2003 Hewlett-Packard Co. * Contributed by Stephane Eranian * * This file is part of the ELILO, the EFI Linux boot loader. * * GNU EFI is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * GNU EFI is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with GNU EFI; see the file COPYING. If not, write to the Free * Software Foundation, 59 Temple Place - Suite 330, Boston, MA * 02111-1307, USA. * * Please check out the elilo.txt for complete documentation on how * to use this program. * * Portions of this file are derived from the LILO/x86 * Copyright 1992-1997 Werner Almesberger. */ #ifndef __LINUX_ELF_H__ #define __LINUX_ELF_H__ /* * This file was derived from . */ #include /* 32-bit ELF base types. */ typedef UINT32 Elf32_Addr; typedef UINT16 Elf32_Half; typedef UINT32 Elf32_Off; typedef INT32 Elf32_Sword; typedef UINT32 Elf32_Word; /* 64-bit ELF base types. */ typedef UINT64 Elf64_Addr; typedef UINT16 Elf64_Half; typedef INT16 Elf64_SHalf; typedef UINT64 Elf64_Off; typedef INT64 Elf64_Sword; typedef UINT64 Elf64_Word; /* 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 /* Flags in the e_flags field of the header */ #define EF_MIPS_NOREORDER 0x00000001 #define EF_MIPS_PIC 0x00000002 #define EF_MIPS_CPIC 0x00000004 #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_SH 42 /* SuperH */ #define EM_SPARCV9 43 /* SPARC v9 64-bit */ #define EM_IA_64 50 /* HP/Intel IA-64 */ /* * This is an interim value that we will use until the committee comes * up with a final number. */ #define EM_ALPHA 0x9026 /* 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 ELF32_ST_BIND(x) ((x) >> 4) #define ELF32_ST_TYPE(x) (((unsigned int) x) & 0xf) /* 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 */ typedef struct dynamic{ Elf32_Sword d_tag; union{ Elf32_Sword d_val; Elf32_Addr d_ptr; } d_un; } Elf32_Dyn; typedef struct { Elf64_Word d_tag; /* entry tag value */ union { Elf64_Word d_val; Elf64_Word 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 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 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 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_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 /* * 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_OP_PUSH 12 /* OP stack push */ #define R_ALPHA_OP_STORE 13 /* OP stack pop and store */ #define R_ALPHA_OP_PSUB 14 /* OP stack subtract */ #define R_ALPHA_OP_PRSHIFT 15 /* OP stack right shift */ #define R_ALPHA_GPVALUE 16 #define R_ALPHA_GPRELHIGH 17 #define R_ALPHA_GPRELLOW 18 #define R_ALPHA_IMMED_GP_16 19 #define R_ALPHA_IMMED_GP_HI32 20 #define R_ALPHA_IMMED_SCN_HI32 21 #define R_ALPHA_IMMED_BR_HI32 22 #define R_ALPHA_IMMED_LO32 23 #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 */ /* Legal values for e_flags field of Elf64_Ehdr. */ #define EF_ALPHA_32BIT 1 /* All addresses are below 2GB */ 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_Word 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_Word r_info; /* index and type of relocation */ Elf64_Word 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 { Elf32_Word st_name; /* Symbol name, index in string tbl (yes, Elf32) */ 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_Word 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_SHalf e_type; Elf64_Half e_machine; INT32 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 */ INT32 e_flags; Elf64_SHalf e_ehsize; Elf64_SHalf e_phentsize; Elf64_SHalf e_phnum; Elf64_SHalf e_shentsize; Elf64_SHalf e_shnum; Elf64_SHalf 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 { 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__ */