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- #ifndef __LIBS_ELF_H__
- #define __LIBS_ELF_H__
-
- #include <defs.h>
-
- #define ELF_MAGIC 0x464C457FU // "\x7FELF" in little endian
-
- /* file header */
- struct elfhdr {
- uint32_t e_magic; // must equal ELF_MAGIC
- uint8_t e_elf[12];
- uint16_t e_type; // 1=relocatable, 2=executable, 3=shared object, 4=core image
- uint16_t e_machine; // 3=x86, 4=68K, etc.
- uint32_t e_version; // file version, always 1
- uint32_t e_entry; // entry point if executable
- uint32_t e_phoff; // file position of program header or 0
- uint32_t e_shoff; // file position of section header or 0
- uint32_t e_flags; // architecture-specific flags, usually 0
- uint16_t e_ehsize; // size of this elf header
- uint16_t e_phentsize; // size of an entry in program header
- uint16_t e_phnum; // number of entries in program header or 0
- uint16_t e_shentsize; // size of an entry in section header
- uint16_t e_shnum; // number of entries in section header or 0
- uint16_t e_shstrndx; // section number that contains section name strings
- };
-
- /* program section header */
- struct proghdr {
- uint32_t p_type; // loadable code or data, dynamic linking info,etc.
- uint32_t p_offset; // file offset of segment
- uint32_t p_va; // virtual address to map segment
- uint32_t p_pa; // physical address, not used
- uint32_t p_filesz; // size of segment in file
- uint32_t p_memsz; // size of segment in memory (bigger if contains bss）
- uint32_t p_flags; // read/write/execute bits
- uint32_t p_align; // required alignment, invariably hardware page size
- };
-
- /* values for Proghdr::p_type */
- #define ELF_PT_LOAD 1
-
- /* flag bits for Proghdr::p_flags */
- #define ELF_PF_X 1
- #define ELF_PF_W 2
- #define ELF_PF_R 4
-
- #endif /* !__LIBS_ELF_H__ */
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