ipxe/src/include/elf.h

#ifndef ELF_H
#define ELF_H

FILE_LICENCE ( GPL2_OR_LATER );

#define EI_NIDENT	16	/* Size of e_ident array. */

/* Values for e_type. */
#define ET_NONE		0	/* No file type */
#define ET_REL		1	/* Relocatable file */
#define ET_EXEC		2	/* Executable file */
#define ET_DYN		3	/* Shared object file */
#define ET_CORE		4	/* Core file */

/* Values for e_machine (architecute). */
#define EM_NONE		 0		/* No machine */
#define EM_M32		 1		/* AT&T WE 32100 */
#define EM_SPARC	 2		/* SUN SPARC */
#define EM_386		 3		/* Intel 80386+ */
#define EM_68K		 4		/* Motorola m68k family */
#define EM_88K		 5		/* Motorola m88k family */
#define EM_486		 6		/* Perhaps disused */
#define EM_860		 7		/* Intel 80860 */
#define EM_MIPS		 8		/* MIPS R3000 big-endian */
#define EM_S370		 9		/* IBM System/370 */
#define EM_MIPS_RS3_LE	10		/* MIPS R3000 little-endian */

#define EM_PARISC	15		/* HPPA */
#define EM_VPP500	17		/* Fujitsu VPP500 */
#define EM_SPARC32PLUS	18		/* Sun's "v8plus" */
#define EM_960		19		/* Intel 80960 */
#define EM_PPC		20		/* PowerPC */
#define EM_PPC64	21		/* PowerPC 64-bit */
#define EM_S390		22		/* IBM S390 */

#define EM_V800		36		/* NEC V800 series */
#define EM_FR20		37		/* Fujitsu FR20 */
#define EM_RH32		38		/* TRW RH-32 */
#define EM_RCE		39		/* Motorola RCE */
#define EM_ARM		40		/* ARM */
#define EM_FAKE_ALPHA	41		/* Digital Alpha */
#define EM_SH		42		/* Hitachi SH */
#define EM_SPARCV9	43		/* SPARC v9 64-bit */
#define EM_TRICORE	44		/* Siemens Tricore */
#define EM_ARC		45		/* Argonaut RISC Core */
#define EM_H8_300	46		/* Hitachi H8/300 */
#define EM_H8_300H	47		/* Hitachi H8/300H */
#define EM_H8S		48		/* Hitachi H8S */
#define EM_H8_500	49		/* Hitachi H8/500 */
#define EM_IA_64	50		/* Intel Merced */
#define EM_MIPS_X	51		/* Stanford MIPS-X */
#define EM_COLDFIRE	52		/* Motorola Coldfire */
#define EM_68HC12	53		/* Motorola M68HC12 */
#define EM_MMA		54		/* Fujitsu MMA Multimedia Accelerator*/
#define EM_PCP		55		/* Siemens PCP */
#define EM_NCPU		56		/* Sony nCPU embeeded RISC */
#define EM_NDR1		57		/* Denso NDR1 microprocessor */
#define EM_STARCORE	58		/* Motorola Start*Core processor */
#define EM_ME16		59		/* Toyota ME16 processor */
#define EM_ST100	60		/* STMicroelectronic ST100 processor */
#define EM_TINYJ	61		/* Advanced Logic Corp. Tinyj emb.fam*/
#define EM_X86_64	62		/* AMD x86-64 architecture */
#define EM_PDSP		63		/* Sony DSP Processor */

#define EM_FX66		66		/* Siemens FX66 microcontroller */
#define EM_ST9PLUS	67		/* STMicroelectronics ST9+ 8/16 mc */
#define EM_ST7		68		/* STmicroelectronics ST7 8 bit mc */
#define EM_68HC16	69		/* Motorola MC68HC16 microcontroller */
#define EM_68HC11	70		/* Motorola MC68HC11 microcontroller */
#define EM_68HC08	71		/* Motorola MC68HC08 microcontroller */
#define EM_68HC05	72		/* Motorola MC68HC05 microcontroller */
#define EM_SVX		73		/* Silicon Graphics SVx */
#define EM_AT19		74		/* STMicroelectronics ST19 8 bit mc */
#define EM_VAX		75		/* Digital VAX */
#define EM_CRIS		76		/* Axis Communications 32-bit embedded processor */
#define EM_JAVELIN	77		/* Infineon Technologies 32-bit embedded processor */
#define EM_FIREPATH	78		/* Element 14 64-bit DSP Processor */
#define EM_ZSP		79		/* LSI Logic 16-bit DSP Processor */
#define EM_MMIX		80		/* Donald Knuth's educational 64-bit processor */
#define EM_HUANY	81		/* Harvard University machine-independent object files */
#define EM_PRISM	82		/* SiTera Prism */
#define EM_AVR		83		/* Atmel AVR 8-bit microcontroller */
#define EM_FR30		84		/* Fujitsu FR30 */
#define EM_D10V		85		/* Mitsubishi D10V */
#define EM_D30V		86		/* Mitsubishi D30V */
#define EM_V850		87		/* NEC v850 */
#define EM_M32R		88		/* Mitsubishi M32R */
#define EM_MN10300	89		/* Matsushita MN10300 */
#define EM_MN10200	90		/* Matsushita MN10200 */
#define EM_PJ		91		/* picoJava */
#define EM_OPENRISC	92		/* OpenRISC 32-bit embedded processor */
#define EM_ARC_A5	93		/* ARC Cores Tangent-A5 */
#define EM_XTENSA	94		/* Tensilica Xtensa Architecture */
#define EM_NUM		95

/* Values for p_type. */
#define PT_NULL		0	/* Unused entry. */
#define PT_LOAD		1	/* Loadable segment. */
#define PT_DYNAMIC	2	/* Dynamic linking information segment. */
#define PT_INTERP	3	/* Pathname of interpreter. */
#define PT_NOTE		4	/* Auxiliary information. */
#define PT_SHLIB	5	/* Reserved (not used). */
#define PT_PHDR		6	/* Location of program header itself. */

/* Values for p_flags. */
#define PF_X		0x1	/* Executable. */
#define PF_W		0x2	/* Writable. */
#define PF_R		0x4	/* Readable. */


#define	ELF_PROGRAM_RETURNS_BIT	0x8000000	/* e_flags bit 31 */

#define EI_MAG0		0
#define ELFMAG0		0x7f

#define EI_MAG1		1
#define ELFMAG1		'E'

#define EI_MAG2		2
#define ELFMAG2		'L'

#define EI_MAG3		3
#define ELFMAG3		'F'

#define ELFMAG		"\177ELF"
#define	SELFMAG		4

#define EI_CLASS	4	/* File class byte index */
#define ELFCLASSNONE	0	/* Invalid class */
#define ELFCLASS32	1	/* 32-bit objects */
#define ELFCLASS64	2	/* 64-bit objects */

#define EI_DATA		5	/* Data encodeing byte index */
#define ELFDATANONE	0	/* Invalid data encoding */
#define ELFDATA2LSB	1	/* 2's complement little endian */
#define ELFDATA2MSB	2	/* 2's complement big endian */

#define EI_VERSION	6	/* File version byte index */
				/* Value must be EV_CURRENT */

#define EV_NONE		0	/* Invalid ELF Version */
#define EV_CURRENT	1	/* Current version */

#define ELF32_PHDR_SIZE (8*4)	/* Size of an elf program header */

#ifndef ASSEMBLY

#include <stdint.h>

/*
 * ELF definitions common to all 32-bit architectures.
 */

typedef uint32_t	Elf32_Addr;
typedef uint16_t	Elf32_Half;
typedef uint32_t	Elf32_Off;
typedef int32_t		Elf32_Sword;
typedef uint32_t	Elf32_Word;
typedef uint32_t	Elf32_Size;

typedef uint64_t	Elf64_Addr;
typedef uint16_t	Elf64_Half;
typedef uint64_t	Elf64_Off;
typedef int32_t		Elf64_Sword;
typedef uint32_t	Elf64_Word;
typedef uint64_t	Elf64_Size;

/*
 * ELF header.
 */
typedef struct {
	unsigned char	e_ident[EI_NIDENT];	/* File identification. */
	Elf32_Half	e_type;		/* File type. */
	Elf32_Half	e_machine;	/* Machine architecture. */
	Elf32_Word	e_version;	/* ELF format version. */
	Elf32_Addr	e_entry;	/* Entry point. */
	Elf32_Off	e_phoff;	/* Program header file offset. */
	Elf32_Off	e_shoff;	/* Section header file offset. */
	Elf32_Word	e_flags;	/* Architecture-specific flags. */
	Elf32_Half	e_ehsize;	/* Size of ELF header in bytes. */
	Elf32_Half	e_phentsize;	/* Size of program header entry. */
	Elf32_Half	e_phnum;	/* Number of program header entries. */
	Elf32_Half	e_shentsize;	/* Size of section header entry. */
	Elf32_Half	e_shnum;	/* Number of section header entries. */
	Elf32_Half	e_shstrndx;	/* Section name strings section. */
} Elf32_Ehdr;

typedef struct {
	unsigned char	e_ident[EI_NIDENT];	/* File identification. */
	Elf64_Half	e_type;		/* File type. */
	Elf64_Half	e_machine;	/* Machine architecture. */
	Elf64_Word	e_version;	/* ELF format version. */
	Elf64_Addr	e_entry;	/* Entry point. */
	Elf64_Off	e_phoff;	/* Program header file offset. */
	Elf64_Off	e_shoff;	/* Section header file offset. */
	Elf64_Word	e_flags;	/* Architecture-specific flags. */
	Elf64_Half	e_ehsize;	/* Size of ELF header in bytes. */
	Elf64_Half	e_phentsize;	/* Size of program header entry. */
	Elf64_Half	e_phnum;	/* Number of program header entries. */
	Elf64_Half	e_shentsize;	/* Size of section header entry. */
	Elf64_Half	e_shnum;	/* Number of section header entries. */
	Elf64_Half	e_shstrndx;	/* Section name strings section. */
} Elf64_Ehdr;

/*
 * Program header.
 */
typedef struct {
	Elf32_Word	p_type;		/* Entry type. */
	Elf32_Off	p_offset;	/* File offset of contents. */
	Elf32_Addr	p_vaddr;	/* Virtual address (not used). */
	Elf32_Addr	p_paddr;	/* Physical address. */
	Elf32_Size	p_filesz;	/* Size of contents in file. */
	Elf32_Size	p_memsz;	/* Size of contents in memory. */
	Elf32_Word	p_flags;	/* Access permission flags. */
	Elf32_Size	p_align;	/* Alignment in memory and file. */
} Elf32_Phdr;

typedef struct {
	Elf64_Word	p_type;		/* Entry type. */
	Elf64_Word	p_flags;	/* Access permission flags. */
	Elf64_Off	p_offset;	/* File offset of contents. */
	Elf64_Addr	p_vaddr;	/* Virtual address (not used). */
	Elf64_Addr	p_paddr;	/* Physical address. */
	Elf64_Size	p_filesz;	/* Size of contents in file. */
	Elf64_Size	p_memsz;	/* Size of contents in memory. */
	Elf64_Size	p_align;	/* Alignment in memory and file. */
} Elf64_Phdr;

/* Standardized Elf image notes for booting... The name for all of these is ELFBoot */

#endif /* ASSEMBLY */

#endif /* ELF_H */