diff options
Diffstat (limited to 'output/elf32.h')
-rw-r--r-- | output/elf32.h | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/output/elf32.h b/output/elf32.h new file mode 100644 index 0000000..ff5e863 --- /dev/null +++ b/output/elf32.h @@ -0,0 +1,134 @@ +#ifndef OUTPUT_ELF32_H +#define OUTPUT_ELF32_H + +#include "elfcommon.h" + +/* ELF standard typedefs (yet more proof that <stdint.h> was way overdue) */ +typedef uint16_t Elf32_Half; +typedef int16_t Elf32_SHalf; +typedef uint32_t Elf32_Word; +typedef int32_t Elf32_Sword; +typedef uint64_t Elf32_Xword; +typedef int64_t Elf32_Sxword; + +typedef uint32_t Elf32_Off; +typedef uint32_t Elf32_Addr; +typedef uint16_t Elf32_Section; + +/* Dynamic header */ + +typedef struct elf32_dyn { + Elf32_Sword d_tag; + union { + Elf32_Sword d_val; + Elf32_Addr d_ptr; + } d_un; +} Elf32_Dyn; + +/* Relocations */ + +#define ELF32_R_SYM(x) ((x) >> 8) +#define ELF32_R_TYPE(x) ((x) & 0xff) + +typedef struct elf32_rel { + Elf32_Addr r_offset; + Elf32_Word r_info; +} Elf32_Rel; + +typedef struct elf32_rela { + Elf32_Addr r_offset; + Elf32_Word r_info; + Elf32_Sword r_addend; +} Elf32_Rela; + +enum reloc32_type { + R_386_32 = 1, /* ordinary absolute relocation */ + R_386_PC32 = 2, /* PC-relative relocation */ + R_386_GOT32 = 3, /* an offset into GOT */ + R_386_PLT32 = 4, /* a PC-relative offset into PLT */ + R_386_COPY = 5, /* ??? */ + R_386_GLOB_DAT = 6, /* ??? */ + R_386_JUMP_SLOT = 7, /* ??? */ + R_386_RELATIVE = 8, /* ??? */ + R_386_GOTOFF = 9, /* an offset from GOT base */ + R_386_GOTPC = 10, /* a PC-relative offset _to_ GOT */ + R_386_TLS_TPOFF = 14, /* Offset in static TLS block */ + R_386_TLS_IE = 15, /* Address of GOT entry for static TLS + block offset */ + /* These are GNU extensions, but useful */ + R_386_16 = 20, /* A 16-bit absolute relocation */ + R_386_PC16 = 21, /* A 16-bit PC-relative relocation */ + R_386_8 = 22, /* An 8-bit absolute relocation */ + R_386_PC8 = 23 /* An 8-bit PC-relative relocation */ +}; + +/* Symbol */ + +typedef struct elf32_sym { + 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; + +/* Main file header */ + +typedef struct elf32_hdr { + 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; + +/* Program header */ + +typedef 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; +} Elf32_Phdr; + +/* Section header */ + +typedef 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; +} Elf32_Shdr; + +/* Note header */ +typedef struct elf32_note { + Elf32_Word n_namesz; /* Name size */ + Elf32_Word n_descsz; /* Content size */ + Elf32_Word n_type; /* Content type */ +} Elf32_Nhdr; + +/* How to extract and insert information held in the st_info field. */ +#define ELF32_ST_BIND(val) (((unsigned char) (val)) >> 4) +#define ELF32_ST_TYPE(val) ((val) & 0xf) + +#endif /* OUTPUT_ELF32_H */ |