elf.h

#ifndef _ELF_H_
#define _ELF_H_

#include "common.h"

typedef u32 Elf32_Addr;
typedef u32 Elf32_Off;
typedef u16 Elf32_Half;
typedef u32 Elf32_Word;

enum {
    EI_MAG0 = 0,
    EI_MAG1 = 1,
    EI_MAG2 = 2,
    EI_MAG3 = 3,
    EI_CLASS = 4,
    EI_DATA = 5,
    EI_VERSION = 6,
    EI_OSABI = 7,
    EI_ABIVERSION = 8,
    EI_PAD = 9,
    EI_NIDENT = 16,
};

struct Elf32_Sym {
    Elf32_Word st_name;
    Elf32_Addr st_value;
    Elf32_Word st_size;
    u8 st_info;
    u8 st_other;
    Elf32_Half st_shndx;
};

enum {
    EM_RISCV = 243,
};

enum {
    ELFCLASS32 = 1,
};

enum {
    PT_NULL = 0,
    PT_LOAD = 1,
    PT_DYNAMIC = 2,
    PT_INTERP = 3,
    PT_NOTE = 4,
    PT_SHLIB = 5,
    PT_PHDR = 6,
    PT_TLS = 7,
};

enum {
    STT_NOTYPE = 0,
    STT_OBJECT = 1,
    STT_FUNC = 2,
    STT_SECTION = 3,
    STT_FILE = 4,
    STT_COMMON = 5,
    STT_TLS = 6,
};

enum {
    SHT_NULL = 0,
    SHT_PROGBITS = 1,
    SHT_SYMTAB = 2,
    SHT_STRTAB = 3,
    SHT_RELA = 4,
    SHT_HASH = 5,
    SHT_DYNAMIC = 6,
    SHT_NOTE = 7,
    SHT_NOBITS = 8,
    SHT_REL = 9,
    SHT_SHLIB = 10,
    SHT_DYNSYM = 11,
    SHT_NUM = 12,
    SHT_LOPROC = 0x70000000,
    SHT_HIPROC = 0x7fffffff,
    SHT_LOUSER = 0x80000000,
    SHT_HIUSER = 0xffffffff
};

#define ELF_ST_TYPE(x) (((unsigned int) x) & 0xf)

struct Elf32_Ehdr {
    u8 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;
};

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;
};

struct Elf32_Shdr {
    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;
};

#if CONFIG_ARCH_TEST
u32 parse_elf(u8 *ram, u8 *elf, u32 *start, u32 *end);
#else
u32 parse_elf(u8 *ram, u8 *elf);
#endif

bool is_elf_valid(struct Elf32_Ehdr *e_hdr);

#endif