| /**************************************************************************** |
| * include/elf32.h |
| * |
| * Copyright (C) 2012 Gregory Nutt. All rights reserved. |
| * Author: Gregory Nutt <gnutt@nuttx.org> |
| * |
| * 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_ELF32_H |
| #define __INCLUDE_ELF32_H |
| |
| /**************************************************************************** |
| * Included Files |
| ****************************************************************************/ |
| |
| #include <nuttx/config.h> |
| |
| #include <stdint.h> |
| |
| /**************************************************************************** |
| * 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 (most of this were not included in the |
| * original SCO document but have been gleaned from elsewhere). |
| */ |
| |
| #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_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_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) ((i) & 0xff) |
| #define ELF32_R_INFO(s,t) (((s)<< 8) | ((t) & 0xff)) |
| |
| /* 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_ELF32_H */ |
