180 lines
4.7 KiB
C
180 lines
4.7 KiB
C
/****************************************************************************
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* include/elf32.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __INCLUDE_ELF32_H
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#define __INCLUDE_ELF32_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <elf.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define ELF_CLASS ELFCLASS32
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#define ELF32_ST_BIND(i) ((i) >> 4)
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#define ELF32_ST_TYPE(i) ((i) & 0xf)
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#define ELF32_ST_INFO(b,t) (((b) << 4) | ((t) & 0xf))
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/* Generic macro to abstract ELF32/ELF64 type/bind */
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#define ELF_ST_TYPE(a) ELF32_ST_TYPE(a)
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#define ELF_ST_BIND(a) ELF32_ST_BIND(a)
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/* Definitions for Elf32_Rel*::r_info */
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#define ELF32_R_SYM(i) ((i) >> 8)
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#define ELF32_R_TYPE(i) ((i) & 0xff)
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#define ELF32_R_INFO(s,t) (((s)<< 8) | ((t) & 0xff))
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#define ELF_R_SYM(i) ELF32_R_SYM(i)
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#define ELF_R_TYPE(i) ELF32_R_TYPE(i)
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/****************************************************************************
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* Public Type Definitions
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****************************************************************************/
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/* Figure 4.2: 32-Bit Data Types */
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typedef uint32_t Elf32_Addr; /* Unsigned program address */
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typedef uint16_t Elf32_Half; /* Unsigned medium integer */
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typedef uint32_t Elf32_Off; /* Unsigned file offset */
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typedef int32_t Elf32_Sword; /* Signed large integer */
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typedef uint32_t Elf32_Word; /* Unsigned large integer */
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/* Figure 4-3: ELF Header */
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typedef struct
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{
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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;
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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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/* Figure 4-8: Section Header */
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typedef struct
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{
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Elf32_Word sh_name;
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Elf32_Word sh_type;
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Elf32_Word sh_flags;
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Elf32_Addr sh_addr;
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Elf32_Off sh_offset;
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Elf32_Word sh_size;
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Elf32_Word sh_link;
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Elf32_Word sh_info;
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Elf32_Word sh_addralign;
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Elf32_Word sh_entsize;
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} Elf32_Shdr;
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/* Figure 4-15: Symbol Table Entry */
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typedef struct
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{
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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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/* Figure 4-19: Relocation Entries */
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typedef struct
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{
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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
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{
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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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/* Figure 5-1: Program Header */
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typedef struct
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{
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Elf32_Word p_type;
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Elf32_Off p_offset;
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Elf32_Addr p_vaddr;
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Elf32_Addr p_paddr;
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Elf32_Word p_filesz;
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Elf32_Word p_memsz;
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Elf32_Word p_flags;
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Elf32_Word p_align;
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} Elf32_Phdr;
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/* Figure 5-7: Note Information */
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typedef struct
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{
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Elf32_Word n_namesz; /* Length of the note's name. */
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Elf32_Word n_descsz; /* Length of the note's descriptor. */
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Elf32_Word n_type; /* Type of the note. */
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} Elf32_Nhdr;
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/* Figure 5-9: Dynamic Structure */
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typedef struct
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{
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Elf32_Sword d_tag;
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union
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{
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Elf32_Word 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 Elf32_Addr Elf_Addr;
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typedef Elf32_Ehdr Elf_Ehdr;
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typedef Elf32_Rel Elf_Rel;
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typedef Elf32_Rela Elf_Rela;
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typedef Elf32_Nhdr Elf_Nhdr;
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typedef Elf32_Phdr Elf_Phdr;
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typedef Elf32_Sym Elf_Sym;
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typedef Elf32_Shdr Elf_Shdr;
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typedef Elf32_Off Elf_Off;
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typedef Elf32_Word Elf_Word;
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typedef Elf32_Dyn Elf_Dyn;
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#endif /* __INCLUDE_ELF32_H */
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