/**************************************************************************** * include/elf.h * * Copyright (C) 2012 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * Reference: System V Application Binary Interface, Edition 4.1, March 18, * 1997, The Santa Cruz Operation, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3. Neither the name NuttX nor the names of its contributors may be * used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************/ #ifndef __INCLUDE_ELF_H #define __INCLUDE_ELF_H /**************************************************************************** * Included Files ****************************************************************************/ #include #include /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ /* Values for Elf32_Ehdr::e_type */ #define ET_NONE 0 /* No file type */ #define ET_REL 1 /* Relocatable file */ #define ET_EXEC 2 /* Executable file */ #define ET_DYN 3 /* Shared object file */ #define ET_CORE 4 /* Core file */ #define ET_LOPROC 0xff00 /* Processor-specific */ #define ET_HIPROC 0xffff /* Processor-specific */ /* Values for Elf32_Ehdr::e_machine */ #define EM_NONE 0 /* No machine */ #define EM_M32 1 /* AT&T WE 32100 */ #define EM_SPARC 2 /* SPARC */ #define EM_386 3 /* Intel 80386 */ #define EM_68K 4 /* Motorola 68000 */ #define EM_88K 5 /* Motorola 88000 */ #define EM_486 6 /* Intel 486+ */ #define EM_860 7 /* Intel 80860 */ #define EM_MIPS 8 /* MIPS R3000 Big-Endian */ #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_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_M32R 88 /* Renesas M32R */ #define EM_H8_300 46 #define EM_ALPHA 0x9026 #define EM_CYGNUS_V850 0x9080 #define EM_CYGNUS_M32R 0x9041 #define EM_S390_OLD 0xa390 #define EM_FRV 0x5441 /* Values for Elf32_Ehdr::e_version */ #define EV_NONE 0 /* Invalid version */ #define EV_CURRENT 1 /* The current version */ /* Ehe ELF identifier */ #define EI_MAG0 0 /* File identification */ #define EI_MAG1 1 /* " " " " */ #define EI_MAG2 2 /* " " " " */ #define EI_MAG3 3 /* " " " " */ #define EI_CLASS 4 /* File class */ #define EI_DATA 5 /* Data encoding */ #define EI_VERSION 6 /* File version */ #define EI_PAD 7 /* Start of padding bytes */ #define EI_NIDENT 16 /* Size of eident[] */ #define EI_MAGIC_SIZE 4 #define EI_MAGIC {0x7f, 'E', 'L', 'F'} /* Values for EI_CLASS */ #define ELFCLASSNONE 0 /* Invalid class */ #define ELFCLASS32 1 /* 32-bit objects */ #define ELFCLASS64 2 /* 64-bit objects */ /* Values for EI_DATA */ #define ELFDATANONE 0 /* Invalid data encoding */ #define ELFDATA2LSB 1 /* Least significant byte occupying the lowest address */ #define ELFDATA2MSB 2 /* Most significant byte occupying the lowest address */ /* Figure 4-7: 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 /* Figure 4-9: Section Types, 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_LOPROC 0x70000000 #define SHT_HIPROC 0x7fffffff #define SHT_LOUSER 0x80000000 #define SHT_HIUSER 0xffffffff /* Figure 4-11: Section Attribute Flags, sh_flags */ #define SHF_WRITE 1 #define SHF_ALLOC 2 #define SHF_EXECINSTR 4 #define SHF_MASKPROC 0xf0000000 /* Definitions for Elf32_Sym::st_info */ #define ELF32_ST_BIND(i) ((i)>>4) #define ELF32_ST_TYPE(i) ((i)&0xf) #define ELF32_ST_INFO(b,t) (((b)<<4)+((t)&0xf)) /* Figure 4-16: Symbol Binding, ELF32_ST_BIND */ #define STB_LOCAL 0 #define STB_GLOBAL 1 #define STB_WEAK 2 #define STB_LOPROC 13 #define STB_HIPROC 15 /* Figure 4-17: Symbol Types, ELF32_ST_TYPE */ #define STT_NOTYPE 0 #define STT_OBJECT 1 #define STT_FUNC 2 #define STT_SECTION 3 #define STT_FILE 4 #define STT_LOPROC 13 #define STT_HIPROC 15 /* Definitions for Elf32_Rel*::r_info */ #define ELF32_R_SYM(i) ((i)>>8) #define ELF32_R_TYPE(i) ((unsigned char)(i)) #define ELF32_R_INFO(s,t) (((s)<<8)+(unsigned char)(t)) /* Figure 5-2: Segment Types, p_type */ #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 /* Figure 5-3: Segment Flag Bits, p_flags */ #define PF_X 1 /* Execute */ #define PF_W 2 /* Write */ #define PF_R 4 /* Read */ #define PF_MASKPROC 0xf0000000 /* Unspecified */ /* Figure 5-10: Dynamic Array Tags, d_tag */ #define DT_NULL 0 /* d_un=ignored */ #define DT_NEEDED 1 /* d_un=d_val */ #define DT_PLTRELSZ 2 /* d_un=d_val */ #define DT_PLTGOT 3 /* d_un=d_ptr */ #define DT_HASH 4 /* d_un=d_ptr */ #define DT_STRTAB 5 /* d_un=d_ptr */ #define DT_SYMTAB 6 /* d_un=d_ptr */ #define DT_RELA 7 /* d_un=d_ptr */ #define DT_RELASZ 8 /* d_un=d_val */ #define DT_RELAENT 9 /* d_un=d_val */ #define DT_STRSZ 10 /* d_un=d_val */ #define DT_SYMENT 11 /* d_un=d_val */ #define DT_INIT 12 /* d_un=d_ptr */ #define DT_FINI 13 /* d_un=d_ptr */ #define DT_SONAME 14 /* d_un=d_val */ #define DT_RPATH 15 /* d_un=d_val */ #define DT_SYMBOLIC 16 /* d_un=ignored */ #define DT_REL 17 /* d_un=d_ptr */ #define DT_RELSZ 18 /* d_un=d_val */ #define DT_RELENT 19 /* d_un=d_val */ #define DT_PLTREL 20 /* d_un=d_val */ #define DT_DEBUG 21 /* d_un=d_ptr */ #define DT_TEXTREL 22 /* d_un=ignored */ #define DT_JMPREL 23 /* d_un=d_ptr */ #define DT_BINDNOW 24 /* d_un=ignored */ #define DT_LOPROC 0x70000000 /* d_un=unspecified */ #define DT_HIPROC 0x7fffffff /* d_un= unspecified */ /**************************************************************************** * Public Type Definitions ****************************************************************************/ /* Figure 4.2: 32-Bit Data Types */ typedef uint32_t Elf32_Addr; /* Unsigned program address */ typedef uint16_t Elf32_Half; /* Unsigned medium integer */ typedef uint32_t Elf32_Off; /* Unsigned file offset */ typedef int32_t Elf32_Sword; /* Signed large integer */ typedef uint32_t Elf32_Word; /* Unsigned large integer */ /* Figure 4-3: ELF Header */ typedef struct { unsigned char e_ident[EI_NIDENT]; Elf32_Half e_type; Elf32_Half e_machine; Elf32_Word e_version; Elf32_Addr e_entry; 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; /* Figure 4-8: Section Header */ 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; /* Figure 4-15: Symbol Table Entry */ typedef struct { 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; /* Figure 4-19: Relocation Entries */ typedef struct { Elf32_Addr r_offset; Elf32_Word r_info; } Elf32_Rel; typedef struct { Elf32_Addr r_offset; Elf32_Word r_info; Elf32_Sword r_addend; } Elf32_Rela; /* Figure 5-1: Program Header */ typedef struct { 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; /* Figure 5-9: Dynamic Structure */ typedef struct { Elf32_Sword d_tag; union { Elf32_Word d_val; Elf32_Addr d_ptr; } d_un; } Elf32_Dyn; //extern Elf32_Dyn _DYNAMIC[] ; #endif /* __INCLUDE_ELF_H */