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begin ElfXX_Hdr declaration

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Emile Clark-Boman 2025-09-26 15:31:59 +10:00
parent 658eed95c4
commit 6ad476284f
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lib/elf/eheader.h Normal file
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/* The ELF header resides at the beginning of an ELF file.
* It identifies the file as an ELF file and contains the information
* necessary for interpreting the contents of the file and locating
* the other components of the file.
* REF: https://gabi.xinuos.com/elf/02-eheader.html#elf-header
*/
#ifndef BFPG_ELF_HEADER_H
# define BFPG_ELF_HEADER_H
# include "eint.h"
# define EI_NIDENT (16)
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;
typedef struct {
unsigned char e_ident[EI_NIDENT];
Elf64_Half e_type;
Elf64_Half e_machine;
Elf64_Word e_version;
Elf64_Addr e_entry;
Elf64_Off e_phoff;
Elf64_Off e_shoff;
Elf64_Word e_flags;
Elf64_Half e_ehsize;
Elf64_Half e_phentsize;
Elf64_Half e_phnum;
Elf64_Half e_shentsize;
Elf64_Half e_shnum;
Elf64_Half e_shstrndx;
} Elf64_Ehdr;
/* == ElfXX_Ehdr.e_ident[] ==
* EI_* macros define indexes into this this, and are followed
* by a series a macros defining legal values for that index.
*/
# define E_IDENT_DESC ( \
"The initial bytes of an ELF file. Marking it as an object file " \
"and providing machine-independent data with which to decode " \
"and interpret the file’s contents."
/* == ElfXX_Ehdr.e_type == */
enum e_type_t : Elf64_Addr {
ET_NONE = 0, /* No file type */
ET_REL = 1, /* Relocatable file */
ET_EXEC = 2, /* Executable file */
ET_DYN = 3, /* Shared object file */
ET_CORE = 4, /* Core file */
ET_LOOS = 0xfe00, /* OS-specific range start */
ET_HIOS = 0xfeff, /* OS-specific range end */
ET_LOPROC = 0xff00, /* Processor-specific range start */
ET_HIPROC = 0xffff, /* Processor-specific range end */
};
#endif /* BFPG_ELF_HEADER_H */