elf.h

umon bootloader source code, support mips cpu.

/* The data in this header file is built primarily from information in */
/* the book "Understanding ELF Object Files and Debugging Tools"       */
/* All page references in comments refer to that book.                 */

#if HOST_IS_WINNT | HOST_IS_WIN95
typedef unsigned long ulong;
typedef unsigned short ushort;
#endif
typedef unsigned char uchar;

typedef unsigned short	Elf32_Half;
typedef unsigned long	Elf32_Word;
typedef unsigned long   Elf32_Addr;
typedef unsigned long	Elf32_Off;

/* Size of ELF identification field. */
#define EI_NIDENT	16

/* e_type values... */
#define ET_NONE		0
#define ET_REL		1
#define ET_EXEC		2
#define ET_DYN		3
#define ET_CORE		4
#define ET_LOPROC	0xff00
#define ET_HIPROC	0xffff


struct elf_fhdr {		/* pg 12 */
	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;
};

/* sh_flags values... */
#define SHF_WRITE	0x1
#define SHF_ALLOC	0x2
#define SHF_EXECINSTR	0x4
#define SHF_MASKPROC	0xf0000000

/* sh_type values... */
#define SHT_NULL	0
#define SHT_PROGBITS	1
#define SHT_SYMTAB	2
#define SHT_STRTAB	3
#define SHT_RELA	4
#define SHT_HASH	5
#define SHT_DYNAMIC	6
#define SHT_NOTE	7
#define SHT_NOBITS	8
#define SHT_REL		9
#define SHT_SHLIB	10
#define SHT_DYNSYM	11
#define SHT_LOPROC	0x70000000
#define SHT_HIPROC	0x7fffffff
#define SHT_LOUSER	0x80000000
#define SHT_HIUSER	0x8fffffff

struct elf_shdr {		/* pg 19 */
	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;
};

#define STB_LOCAL	0
#define STB_GLOBAL	1
#define STB_WEAK	2
#define STB_LOPROC	13
#define STB_HIPROC	15

#define STT_NOTYPE	0
#define STT_OBJECT	1
#define STT_FUNC	2
#define STT_SECTION	3
#define STT_FILE	4
#define STT_LOPROC	13
#define STT_HIPROC	15

struct elf_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;
};

struct elf_phdr {		/* pg 42 */
	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;
};

extern struct elf_fhdr *GetElfFileHdr();
extern struct elf_shdr *GetElfScnHdr();
extern char *VerboseShflags(unsigned long);
extern char *VerboseShtype(unsigned long);
extern char *GetElfSectionName(unsigned long);