elf

UNIX下FILE命令的实现源码

#------------------------------------------------------------------------------
# elf:  file(1) magic for ELF executables
#
# We have to check the byte order flag to see what byte order all the
# other stuff in the header is in.
#
# MIPS R3000 may also be for MIPS R2000.
# What're the correct byte orders for the nCUBE and the Fujitsu VPP500?
#
# updated by Daniel Quinlan ([e-mail])
0	string		\177ELF		ELF
>4	byte		0		invalid class
>4	byte		1		32-bit
# only for MIPS
>>18	beshort		8
>>18	beshort		10
>>>36   belong          &0x20           N32
>4	byte		2		64-bit
>5	byte		0		invalid byte order
>5	byte		1		LSB
# only for MIPS R3000_BE
>>18    leshort		8
# only for 32-bit
>>>4	byte		1
>>>>36  lelong&0xf0000000       0x00000000      mips-1
>>>>36  lelong&0xf0000000       0x10000000      mips-2
>>>>36  lelong&0xf0000000       0x20000000      mips-3
>>>>36  lelong&0xf0000000       0x30000000      mips-4
>>>>36  lelong&0xf0000000       0x40000000      mips-5
>>>>36  lelong&0xf0000000       0x50000000      mips-6
# only for 64-bit
>>>4	byte		2
>>>>48  lelong&0xf0000000       0x00000000      mips-1
>>>>48  lelong&0xf0000000       0x10000000      mips-2
>>>>48  lelong&0xf0000000       0x20000000      mips-3
>>>>48  lelong&0xf0000000       0x30000000      mips-4
>>>>48  lelong&0xf0000000       0x40000000      mips-5
>>>>48  lelong&0xf0000000       0x50000000      mips-6
>>16	leshort		0		no file type,
>>16	leshort		1		relocatable,
>>16	leshort		2		executable,
>>16	leshort		3		shared object,
# Core handling from Peter Tobias <[e-mail]>
# corrections by Christian 'Dr. Disk' Hechelmann <[e-mail]>
>>16	leshort		4		core file
>>>(0x38+0xcc) string	>\0		of '%s'
>>>(0x38+0x10) lelong	>0		(signal %d),
>>16	leshort		&0xff00		processor-specific,
>>18	leshort		0		no machine,
>>18	leshort		1		AT&T WE32100 - invalid byte order,
>>18	leshort		2		SPARC - invalid byte order,
>>18	leshort		3		Intel 80386,
>>18	leshort		4		Motorola 68000 - invalid byte order,
>>18	leshort		5		Motorola 88000 - invalid byte order,
>>18	leshort		6		Intel 80486,
>>18	leshort		7		Intel 80860,
# "officially" big endian, but binutils bfd only emits magic #8 for MIPS.
>>18	leshort		8		MIPS R3000_LE [bfd bug],
>>18	leshort		9		Amdahl - invalid byte order,
>>18	leshort		10		MIPS R3000_LE,
>>18	leshort		11		RS6000 - invalid byte order,
>>18	leshort		15		PA-RISC - invalid byte order,
>>>50	leshort		0x0214		2.0
>>>48	leshort		&0x0008		(LP64),
>>18	leshort		16		nCUBE,
>>18	leshort		17		Fujitsu VPP500,
>>18	leshort		18		SPARC32PLUS,
>>18	leshort		20		PowerPC,
>>18	leshort		36		NEC V800,
>>18	leshort		37		Fujitsu FR20,
>>18	leshort		38		TRW RH-32,
>>18	leshort		39		Motorola RCE,
>>18	leshort		40		Advanced RISC Machines ARM,
>>18	leshort		41		Alpha,
>>18	leshort		42		Hitachi SH,
>>18	leshort		43		SPARC V9 - invalid byte order,
>>18	leshort		44		Siemens Tricore Embedded Processor,
>>18	leshort		45		Argonaut RISC Core, Argonaut Technologies Inc.,
>>18	leshort		46		Hitachi H8/300,
>>18	leshort		47		Hitachi H8/300H,
>>18	leshort		48		Hitachi H8S,
>>18	leshort		49		Hitachi H8/500,
>>18	leshort		50		IA-64 (Intel 64 bit architecture)
>>18	leshort		51		Stanford MIPS-X,
>>18	leshort		52		Motorola Coldfire,
>>18	leshort		53		Motorola M68HC12,
>>18	leshort		75		Digital VAX,
>>18	leshort		0x9026		Alpha (unofficial),
>>20	lelong		0		invalid version
>>20	lelong		1		version 1
>>36	lelong		1		MathCoPro/FPU/MAU Required
>8	string		>\0		(%s)
>8	string		\0
>>7	byte		0		(SYSV)
>>7	byte		1		(HP-UX)
>>7	byte		2		(NetBSD)
>>7	byte		3		(GNU/Linux)
>>7	byte		4		(GNU/Hurd)
>>7	byte		5		(86Open)
>>7	byte		6		(Solaris)
>>7	byte		7		(Monterey)
>>7	byte		8		(IRIX)
>>7	byte		9		(FreeBSD)
>>7	byte		10		(Tru64)
>>7	byte		97		(ARM)
>>7	byte		255		(embedded)
>5	byte		2		MSB
# only for MIPS R3000_BE
>>18    beshort		8
# only for 32-bit
>>>4	byte		1
>>>>36  belong&0xf0000000       0x00000000      mips-1
>>>>36  belong&0xf0000000       0x10000000      mips-2
>>>>36  belong&0xf0000000       0x20000000      mips-3
>>>>36  belong&0xf0000000       0x30000000      mips-4
>>>>36  belong&0xf0000000       0x40000000      mips-5
>>>>36  belong&0xf0000000       0x50000000      mips-6
# only for 64-bit
>>>4	byte		2
>>>>48  belong&0xf0000000       0x00000000      mips-1
>>>>48  belong&0xf0000000       0x10000000      mips-2
>>>>48  belong&0xf0000000       0x20000000      mips-3
>>>>48  belong&0xf0000000       0x30000000      mips-4
>>>>48  belong&0xf0000000       0x40000000      mips-5
>>>>48  belong&0xf0000000       0x50000000      mips-6
>>16	beshort		0		no file type,
>>16	beshort		1		relocatable,
>>16	beshort		2		executable,
>>16	beshort		3		shared object,
>>16	beshort		4		core file,
>>>(0x38+0xcc) string	>\0		of '%s'
>>>(0x38+0x10) belong	>0		(signal %d),
>>16	beshort		&0xff00		processor-specific,
>>18	beshort		0		no machine,
>>18	beshort		1		AT&T WE32100,
>>18	beshort		2		SPARC,
>>18	beshort		3		Intel 80386 - invalid byte order,
>>18	beshort		4		Motorola 68000,
>>18	beshort		5		Motorola 88000,
>>18	beshort		6		Intel 80486 - invalid byte order,
>>18	beshort		7		Intel 80860,
>>18	beshort		8		MIPS R3000_BE,
>>18	beshort		9		Amdahl,
>>18	beshort		10		MIPS R3000_LE - invalid byte order,
>>18	beshort		11		RS6000,
>>18	beshort		15		PA-RISC
>>>50	beshort		0x0214		2.0
>>>48	beshort		&0x0008		(LP64)
>>18	beshort		16		nCUBE,
>>18	beshort		17		Fujitsu VPP500,
>>18	beshort		18		SPARC32PLUS,
>>>36	belong&0xffff00	&0x000100	V8+ Required,
>>>36	belong&0xffff00	&0x000200	Sun UltraSPARC1 Extensions Required,
>>>36	belong&0xffff00	&0x000400	HaL R1 Extensions Required,
>>>36	belong&0xffff00	&0x000800	Sun UltraSPARC3 Extensions Required,
>>18	beshort		20		PowerPC or cisco 4500,
>>18	beshort		21		cisco 7500,
>>18	beshort		24		cisco SVIP,
>>18	beshort		25		cisco 7200,
>>18	beshort		36		NEC V800 or cisco 12000,
>>18	beshort		37		Fujitsu FR20,
>>18	beshort		38		TRW RH-32,
>>18	beshort		39		Motorola RCE,
>>18	beshort		40		Advanced RISC Machines ARM,
>>18	beshort		41		Alpha,
>>18	beshort		42		Hitachi SH,
>>18	beshort		43		SPARC V9,
>>18	beshort		44		Siemens Tricore Embedded Processor,
>>18	beshort		45		Argonaut RISC Core, Argonaut Technologies Inc.,
>>18	beshort		46		Hitachi H8/300,
>>18	beshort		47		Hitachi H8/300H,
>>18	beshort		48		Hitachi H8S,
>>18	beshort		49		Hitachi H8/500,
>>18	beshort		50		Intel Merced Processor,
>>18	beshort		51		Stanford MIPS-X,
>>18	beshort		52		Motorola Coldfire,
>>18	beshort		53		Motorola M68HC12,
>>18	beshort		75		Digital VAX,
>>18	beshort		0x9026		Alpha (unofficial),
>>20	belong		0		invalid version
>>20	belong		1		version 1
>>36	belong		1		MathCoPro/FPU/MAU Required