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/*
* Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef _ELF_H
#define _ELF_H
#include <stdint.h>
#define ELF_MAGIC 0x464c457fu
#define EM_ARM 0x28u
#define EM_RISCV 0xf3u
#define EF_ARM_ABI_FLOAT_HARD 0x00000400u
#define PT_LOAD 0x00000001u
#define PF_X 0x1u
#define PF_W 0x2u
#define PF_R 0x4u
#define SHT_NULL 0x00000000u
#define SHT_PROGBITS 0x00000001u
#define SHT_NOBITS 0x00000008u
#define SHF_ALLOC 0x00000002u
#ifdef __cplusplus
#include <string>
#include <sstream>
#endif
#pragma pack(push, 1)
struct elf_header {
uint32_t magic;
uint8_t arch_class;
uint8_t endianness;
uint8_t version;
uint8_t abi;
uint8_t abi_version;
uint8_t _pad[7];
uint16_t type;
uint16_t machine;
uint32_t version2;
};
struct elf32_header {
struct elf_header common;
uint32_t entry;
uint32_t ph_offset;
uint32_t sh_offset;
uint32_t flags;
uint16_t eh_size;
uint16_t ph_entry_size;
uint16_t ph_num;
uint16_t sh_entry_size;
uint16_t sh_num;
uint16_t sh_str_index;
};
struct elf32_ph_entry {
#ifdef __cplusplus
uint32_t physical_address(void) const {return paddr;};
uint32_t physical_size(void) const {return filez;};
uint32_t virtual_address(void) const {return vaddr;};
uint32_t virtual_size(void) const {return memsz;};
bool is_load(void) const {return type == 0x1;};
#endif
uint32_t type;
uint32_t offset;
uint32_t vaddr;
uint32_t paddr;
uint32_t filez;
uint32_t memsz;
uint32_t flags;
uint32_t align;
};
#ifdef __cplusplus
typedef elf32_ph_entry Segment;
inline std::string to_string(const elf32_ph_entry &ph) {
std::stringstream ss;
ss << "segment paddr " << std::hex << ph.paddr << " vaddr " << std::hex << ph.vaddr;
return ss.str();
}
#endif
struct elf32_sh_entry {
#ifdef __cplusplus
uint32_t virtual_address(void) const {return addr;};
#endif
uint32_t name;
uint32_t type;
uint32_t flags;
uint32_t addr;
uint32_t offset;
uint32_t size;
uint32_t link;
uint32_t info;
uint32_t addralign;
uint32_t entsize;
};
#ifdef __cplusplus
typedef elf32_sh_entry Section;
inline std::string to_string(const elf32_sh_entry &sh) {
std::stringstream ss;
ss << std::hex << sh.addr;
return ss.str();
}
#endif
struct elf32_sym_entry {
uint32_t name;
uint32_t value;
uint32_t size;
uint8_t info;
uint8_t other;
uint16_t shndx;
};
#pragma pack(pop)
#endif
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