[binutils.git] / include / elf-common.h

/* ELF support for BFD.
   Copyright (C) 1991 Free Software Foundation, Inc.

   Written by Fred Fish @ Cygnus Support, from information published
   in "UNIX System V Release 4, Programmers Guide: ANSI C and
   Programming Support Tools".

This file is part of BFD, the Binary File Descriptor library.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */


/* This file is part of ELF support for BFD, and contains the portions
   that are common to both the internal and external representations.
   For example, ELFMAG0 is the byte 0x7F in both the internal (in-memory)
   and external (in-file) representations. */
   

/* Fields in e_ident[] */

#define EI_MAG0		0		/* File identification byte 0 index */
#define ELFMAG0		0x7F		/* Magic number byte 0 */

#define EI_MAG1		1		/* File identification byte 1 index */
#define ELFMAG1		'E'		/* Magic number byte 1 */

#define EI_MAG2		2		/* File identification byte 2 index */
#define ELFMAG2		'L'		/* Magic number byte 2 */

#define EI_MAG3		3		/* File identification byte 3 index */
#define ELFMAG3		'F'		/* Magic number byte 3 */

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

#define EI_DATA		5		/* Data encoding */
#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 */

#define EI_PAD		7		/* Start of padding bytes */


/* Values for e_type, which identifies the object file 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 */
#define ET_LOPROC	0xFF00		/* Processor-specific */
#define ET_HIPROC	0xFFFF		/* Processor-specific */

/* Values for e_machine, which identifies the architecture */

#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_860		6		/* Intel 80860 */

/* Values for e_version */

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

/* Values for program header, p_type field */

#define	PT_NULL		0		/* Program header table entry unused */
#define PT_LOAD		1		/* Loadable program segment */
#define PT_DYNAMIC	2		/* Dynamic linking information */
#define PT_INTERP	3		/* Program interpreter */
#define PT_NOTE		4		/* Auxiliary information */
#define PT_SHLIB	5		/* Reserved, unspecified semantics */
#define PT_PHDR		6		/* Entry for header table itself */
#define PT_LOPROC	0x70000000	/* Processor-specific */
#define PT_HIPROC	0x7FFFFFFF	/* Processor-specific */

/* Program segment permissions, in program header p_flags field */

#define PF_X		(1 << 0)	/* Segment is executable */
#define PF_W		(1 << 1)	/* Segment is writable */
#define PF_R		(1 << 2)	/* Segment is readable */
#define PF_MASKPROC	0xF0000000	/* Processor-specific reserved bits */

/* Values for section header, sh_type field */

#define SHT_NULL	0		/* Section header table entry unused */
#define SHT_PROGBITS	1		/* Program specific (private) data */
#define SHT_SYMTAB	2		/* Link editing symbol table */
#define SHT_STRTAB	3		/* A string table */
#define SHT_RELA	4		/* Relocation entries with addends */
#define SHT_HASH	5		/* A symbol hash table */
#define SHT_DYNAMIC	6		/* Information for dynamic linking */
#define SHT_NOTE	7		/* Information that marks file */
#define SHT_NOBITS	8		/* Section occupies no space in file */
#define SHT_REL		9		/* Relocation entries, no addends */
#define SHT_SHLIB	10		/* Reserved, unspecified semantics */
#define SHT_DYNSYM	11		/* Dynamic linking symbol table */
#define SHT_LOPROC	0x70000000	/* Processor-specific semantics, lo */
#define SHT_HIPROC	0x7FFFFFFF	/* Processor-specific semantics, hi */
#define SHT_LOUSER	0x80000000	/* Application-specific semantics */
#define SHT_HIUSER	0x8FFFFFFF	/* Application-specific semantics */

/* Values for section header, sh_flags field */

#define SHF_WRITE	(1 << 0)	/* Writable data during execution */
#define SHF_ALLOC	(1 << 1)	/* Occupies memory during execution */
#define SHF_EXECINSTR	(1 << 2)	/* Executable machine instructions */
#define SHF_MASKPROC	0xF0000000	/* Processor-specific semantics */

/* Values of note segment descriptor types for core files. */

#define NT_PRSTATUS	1		/* Contains copy of prstatus struct */
#define NT_FPREGSET	2		/* Contains copy of fpregset struct */
#define NT_PRPSINFO	3		/* Contains copy of prpsinfo struct */
Commit	Line	Data
2d996e5d JG	1	/* ELF support for BFD.
	2	Copyright (C) 1991 Free Software Foundation, Inc.
	3
	4	Written by Fred Fish @ Cygnus Support, from information published
	5	in "UNIX System V Release 4, Programmers Guide: ANSI C and
	6	Programming Support Tools".
	7
	8	This file is part of BFD, the Binary File Descriptor library.
	9
	10	This program is free software; you can redistribute it and/or modify
	11	it under the terms of the GNU General Public License as published by
	12	the Free Software Foundation; either version 2 of the License, or
	13	(at your option) any later version.
	14
	15	This program is distributed in the hope that it will be useful,
	16	but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	GNU General Public License for more details.
	19
	20	You should have received a copy of the GNU General Public License
	21	along with this program; if not, write to the Free Software
	22	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
	23
	24
	25	/* This file is part of ELF support for BFD, and contains the portions
	26	that are common to both the internal and external representations.
	27	For example, ELFMAG0 is the byte 0x7F in both the internal (in-memory)
	28	and external (in-file) representations. */
	29
	30
	31	/* Fields in e_ident[] */
	32
	33	#define EI_MAG0 0 /* File identification byte 0 index */
	34	#define ELFMAG0 0x7F /* Magic number byte 0 */
	35
	36	#define EI_MAG1 1 /* File identification byte 1 index */
	37	#define ELFMAG1 'E' /* Magic number byte 1 */
	38
	39	#define EI_MAG2 2 /* File identification byte 2 index */
	40	#define ELFMAG2 'L' /* Magic number byte 2 */
	41
	42	#define EI_MAG3 3 /* File identification byte 3 index */
	43	#define ELFMAG3 'F' /* Magic number byte 3 */
	44
	45	#define EI_CLASS 4 /* File class */
	46	#define ELFCLASSNONE 0 /* Invalid class */
	47	#define ELFCLASS32 1 /* 32-bit objects */
	48	#define ELFCLASS64 2 /* 64-bit objects */
	49
	50	#define EI_DATA 5 /* Data encoding */
	51	#define ELFDATANONE 0 /* Invalid data encoding */
	52	#define ELFDATA2LSB 1 /* 2's complement, little endian */
	53	#define ELFDATA2MSB 2 /* 2's complement, big endian */
	54
	55	#define EI_VERSION 6 /* File version */
	56
	57	#define EI_PAD 7 /* Start of padding bytes */
	58
	59
	60	/* Values for e_type, which identifies the object file type */
	61
	62	#define ET_NONE 0 /* No file type */
	63	#define ET_REL 1 /* Relocatable file */
	64	#define ET_EXEC 2 /* Executable file */
65	#define ET_DYN 3 /* Shared object file */
66	#define ET_CORE 4 /* Core file */
67	#define ET_LOPROC 0xFF00 /* Processor-specific */
68	#define ET_HIPROC 0xFFFF /* Processor-specific */
69
70	/* Values for e_machine, which identifies the architecture */
71
72	#define EM_NONE 0 /* No machine */
73	#define EM_M32 1 /* AT&T WE 32100 */
74	#define EM_SPARC 2 /* SUN SPARC */
75	#define EM_386 3 /* Intel 80386 */
76	#define EM_68K 4 /* Motorola m68k family */
77	#define EM_88K 5 /* Motorola m88k family */
78	#define EM_860 6 /* Intel 80860 */
79
80	/* Values for e_version */
81
82	#define EV_NONE 0 /* Invalid ELF version */
83	#define EV_CURRENT 1 /* Current version */
84
85	/* Values for program header, p_type field */
86
87	#define PT_NULL 0 /* Program header table entry unused */
88	#define PT_LOAD 1 /* Loadable program segment */
89	#define PT_DYNAMIC 2 /* Dynamic linking information */
90	#define PT_INTERP 3 /* Program interpreter */
91	#define PT_NOTE 4 /* Auxiliary information */
92	#define PT_SHLIB 5 /* Reserved, unspecified semantics */
93	#define PT_PHDR 6 /* Entry for header table itself */
94	#define PT_LOPROC 0x70000000 /* Processor-specific */
95	#define PT_HIPROC 0x7FFFFFFF /* Processor-specific */
96
97	/* Program segment permissions, in program header p_flags field */
98
99	#define PF_X (1 << 0) /* Segment is executable */
100	#define PF_W (1 << 1) /* Segment is writable */
101	#define PF_R (1 << 2) /* Segment is readable */
102	#define PF_MASKPROC 0xF0000000 /* Processor-specific reserved bits */
103
104	/* Values for section header, sh_type field */
105
106	#define SHT_NULL 0 /* Section header table entry unused */
107	#define SHT_PROGBITS 1 /* Program specific (private) data */
108	#define SHT_SYMTAB 2 /* Link editing symbol table */
109	#define SHT_STRTAB 3 /* A string table */
110	#define SHT_RELA 4 /* Relocation entries with addends */
111	#define SHT_HASH 5 /* A symbol hash table */
112	#define SHT_DYNAMIC 6 /* Information for dynamic linking */
113	#define SHT_NOTE 7 /* Information that marks file */
114	#define SHT_NOBITS 8 /* Section occupies no space in file */
115	#define SHT_REL 9 /* Relocation entries, no addends */
116	#define SHT_SHLIB 10 /* Reserved, unspecified semantics */
117	#define SHT_DYNSYM 11 /* Dynamic linking symbol table */
118	#define SHT_LOPROC 0x70000000 /* Processor-specific semantics, lo */
119	#define SHT_HIPROC 0x7FFFFFFF /* Processor-specific semantics, hi */
120	#define SHT_LOUSER 0x80000000 /* Application-specific semantics */
121	#define SHT_HIUSER 0x8FFFFFFF /* Application-specific semantics */
122
123	/* Values for section header, sh_flags field */
124
125	#define SHF_WRITE (1 << 0) /* Writable data during execution */
126	#define SHF_ALLOC (1 << 1) /* Occupies memory during execution */
127	#define SHF_EXECINSTR (1 << 2) /* Executable machine instructions */
128	#define SHF_MASKPROC 0xF0000000 /* Processor-specific semantics */
d6fee238 FF	129
	130	/* Values of note segment descriptor types for core files. */
	131
	132	#define NT_PRSTATUS 1 /* Contains copy of prstatus struct */
	133	#define NT_FPREGSET 2 /* Contains copy of fpregset struct */
	134	#define NT_PRPSINFO 3 /* Contains copy of prpsinfo struct */