[thirdparty/binutils-gdb.git] / include / elf / external.h

/* ELF support for BFD.
   Copyright 1991, 1992, 1993, 1995, 1997, 1998, 1999
   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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */


/* This file is part of ELF support for BFD, and contains the portions
   that describe how ELF is represented externally by the BFD library.
   I.E. it describes the in-file representation of ELF.  It requires
   the elf-common.h file which contains the portions that are common to
   both the internal and external representations. */

/* The 64-bit stuff is kind of random.  Perhaps someone will publish a
   spec someday.  */

#ifndef _ELF_EXTERNAL_H
#define _ELF_EXTERNAL_H

/* ELF Header (32-bit implementations) */

typedef struct {
  unsigned char	e_ident[16];		/* ELF "magic number" */
  unsigned char	e_type[2];		/* Identifies object file type */
  unsigned char	e_machine[2];		/* Specifies required architecture */
  unsigned char	e_version[4];		/* Identifies object file version */
  unsigned char	e_entry[4];		/* Entry point virtual address */
  unsigned char	e_phoff[4];		/* Program header table file offset */
  unsigned char	e_shoff[4];		/* Section header table file offset */
  unsigned char	e_flags[4];		/* Processor-specific flags */
  unsigned char	e_ehsize[2];		/* ELF header size in bytes */
  unsigned char	e_phentsize[2];		/* Program header table entry size */
  unsigned char	e_phnum[2];		/* Program header table entry count */
  unsigned char	e_shentsize[2];		/* Section header table entry size */
  unsigned char	e_shnum[2];		/* Section header table entry count */
  unsigned char	e_shstrndx[2];		/* Section header string table index */
} Elf32_External_Ehdr;

typedef struct {
  unsigned char	e_ident[16];		/* ELF "magic number" */
  unsigned char	e_type[2];		/* Identifies object file type */
  unsigned char	e_machine[2];		/* Specifies required architecture */
  unsigned char	e_version[4];		/* Identifies object file version */
  unsigned char	e_entry[8];		/* Entry point virtual address */
  unsigned char	e_phoff[8];		/* Program header table file offset */
  unsigned char	e_shoff[8];		/* Section header table file offset */
  unsigned char	e_flags[4];		/* Processor-specific flags */
  unsigned char	e_ehsize[2];		/* ELF header size in bytes */
  unsigned char	e_phentsize[2];		/* Program header table entry size */
  unsigned char	e_phnum[2];		/* Program header table entry count */
  unsigned char	e_shentsize[2];		/* Section header table entry size */
  unsigned char	e_shnum[2];		/* Section header table entry count */
  unsigned char	e_shstrndx[2];		/* Section header string table index */
} Elf64_External_Ehdr;

/* Program header */

typedef struct {
  unsigned char	p_type[4];		/* Identifies program segment type */
  unsigned char	p_offset[4];		/* Segment file offset */
  unsigned char	p_vaddr[4];		/* Segment virtual address */
  unsigned char	p_paddr[4];		/* Segment physical address */
  unsigned char	p_filesz[4];		/* Segment size in file */
  unsigned char	p_memsz[4];		/* Segment size in memory */
  unsigned char	p_flags[4];		/* Segment flags */
  unsigned char	p_align[4];		/* Segment alignment, file & memory */
} Elf32_External_Phdr;

typedef struct {
  unsigned char	p_type[4];		/* Identifies program segment type */
  unsigned char	p_flags[4];		/* Segment flags */
  unsigned char	p_offset[8];		/* Segment file offset */
  unsigned char	p_vaddr[8];		/* Segment virtual address */
  unsigned char	p_paddr[8];		/* Segment physical address */
  unsigned char	p_filesz[8];		/* Segment size in file */
  unsigned char	p_memsz[8];		/* Segment size in memory */
  unsigned char	p_align[8];		/* Segment alignment, file & memory */
} Elf64_External_Phdr;

/* Section header */

typedef struct {
  unsigned char	sh_name[4];		/* Section name, index in string tbl */
  unsigned char	sh_type[4];		/* Type of section */
  unsigned char	sh_flags[4];		/* Miscellaneous section attributes */
  unsigned char	sh_addr[4];		/* Section virtual addr at execution */
  unsigned char	sh_offset[4];		/* Section file offset */
  unsigned char	sh_size[4];		/* Size of section in bytes */
  unsigned char	sh_link[4];		/* Index of another section */
  unsigned char	sh_info[4];		/* Additional section information */
  unsigned char	sh_addralign[4];	/* Section alignment */
  unsigned char	sh_entsize[4];		/* Entry size if section holds table */
} Elf32_External_Shdr;

typedef struct {
  unsigned char	sh_name[4];		/* Section name, index in string tbl */
  unsigned char	sh_type[4];		/* Type of section */
  unsigned char	sh_flags[8];		/* Miscellaneous section attributes */
  unsigned char	sh_addr[8];		/* Section virtual addr at execution */
  unsigned char	sh_offset[8];		/* Section file offset */
  unsigned char	sh_size[8];		/* Size of section in bytes */
  unsigned char	sh_link[4];		/* Index of another section */
  unsigned char	sh_info[4];		/* Additional section information */
  unsigned char	sh_addralign[8];	/* Section alignment */
  unsigned char	sh_entsize[8];		/* Entry size if section holds table */
} Elf64_External_Shdr;

/* Symbol table entry */

typedef struct {
  unsigned char	st_name[4];		/* Symbol name, index in string tbl */
  unsigned char	st_value[4];		/* Value of the symbol */
  unsigned char	st_size[4];		/* Associated symbol size */
  unsigned char	st_info[1];		/* Type and binding attributes */
  unsigned char	st_other[1];		/* No defined meaning, 0 */
  unsigned char	st_shndx[2];		/* Associated section index */
} Elf32_External_Sym;

typedef struct {
  unsigned char	st_name[4];		/* Symbol name, index in string tbl */
  unsigned char	st_info[1];		/* Type and binding attributes */
  unsigned char	st_other[1];		/* No defined meaning, 0 */
  unsigned char	st_shndx[2];		/* Associated section index */
  unsigned char	st_value[8];		/* Value of the symbol */
  unsigned char	st_size[8];		/* Associated symbol size */
} Elf64_External_Sym;

/* Note segments */

typedef struct {
  unsigned char	namesz[4];		/* Size of entry's owner string */
  unsigned char	descsz[4];		/* Size of the note descriptor */
  unsigned char	type[4];		/* Interpretation of the descriptor */
  char		name[1];		/* Start of the name+desc data */
} Elf_External_Note;

/* Relocation Entries */
typedef struct {
  unsigned char r_offset[4];	/* Location at which to apply the action */
  unsigned char	r_info[4];	/* index and type of relocation */
} Elf32_External_Rel;

typedef struct {
  unsigned char r_offset[4];	/* Location at which to apply the action */
  unsigned char	r_info[4];	/* index and type of relocation */
  unsigned char	r_addend[4];	/* Constant addend used to compute value */
} Elf32_External_Rela;

typedef struct {
  unsigned char r_offset[8];	/* Location at which to apply the action */
  unsigned char	r_info[8];	/* index and type of relocation */
} Elf64_External_Rel;

typedef struct {
  unsigned char r_offset[8];	/* Location at which to apply the action */
  unsigned char	r_info[8];	/* index and type of relocation */
  unsigned char	r_addend[8];	/* Constant addend used to compute value */
} Elf64_External_Rela;

/* dynamic section structure */

typedef struct {
  unsigned char	d_tag[4];		/* entry tag value */
  union {
    unsigned char	d_val[4];
    unsigned char	d_ptr[4];
  } d_un;
} Elf32_External_Dyn;

typedef struct {
  unsigned char	d_tag[8];		/* entry tag value */
  union {
    unsigned char	d_val[8];
    unsigned char	d_ptr[8];
  } d_un;
} Elf64_External_Dyn;

/* The version structures are currently size independent.  They are
   named without a 32 or 64.  If that ever changes, these structures
   will need to be renamed.  */

/* This structure appears in a SHT_GNU_verdef section.  */

typedef struct {
  unsigned char		vd_version[2];
  unsigned char		vd_flags[2];
  unsigned char		vd_ndx[2];
  unsigned char		vd_cnt[2];
  unsigned char		vd_hash[4];
  unsigned char		vd_aux[4];
  unsigned char		vd_next[4];
} Elf_External_Verdef;

/* This structure appears in a SHT_GNU_verdef section.  */

typedef struct {
  unsigned char		vda_name[4];
  unsigned char		vda_next[4];
} Elf_External_Verdaux;

/* This structure appears in a SHT_GNU_verneed section.  */

typedef struct {
  unsigned char		vn_version[2];
  unsigned char		vn_cnt[2];
  unsigned char		vn_file[4];
  unsigned char		vn_aux[4];
  unsigned char		vn_next[4];
} Elf_External_Verneed;

/* This structure appears in a SHT_GNU_verneed section.  */

typedef struct {
  unsigned char		vna_hash[4];
  unsigned char		vna_flags[2];
  unsigned char		vna_other[2];
  unsigned char		vna_name[4];
  unsigned char		vna_next[4];
} Elf_External_Vernaux;

/* This structure appears in a SHT_GNU_versym section.  This is not a
   standard ELF structure; ELF just uses Elf32_Half.  */

typedef struct {
  unsigned char		vs_vers[2];
}
#ifdef __GNUC__
  __attribute__ ((packed))
#endif
  Elf_External_Versym;

/* Structure for syminfo section.  */
typedef struct
{
  unsigned char		si_boundto[2];
  unsigned char		si_flags[2];
} Elf_External_Syminfo;

#endif /* _ELF_EXTERNAL_H */
Commit	Line	Data
252b5132	1	/* ELF support for BFD.
4f1d9bd8 NC	2	Copyright 1991, 1992, 1993, 1995, 1997, 1998, 1999
4f1d9bd8 NC	3	Free Software Foundation, Inc.
252b5132 RH	4
	5	Written by Fred Fish @ Cygnus Support, from information published
	6	in "UNIX System V Release 4, Programmers Guide: ANSI C and
	7	Programming Support Tools".
	8
	9	This file is part of BFD, the Binary File Descriptor library.
	10
	11	This program is free software; you can redistribute it and/or modify
	12	it under the terms of the GNU General Public License as published by
	13	the Free Software Foundation; either version 2 of the License, or
	14	(at your option) any later version.
	15
	16	This program is distributed in the hope that it will be useful,
	17	but WITHOUT ANY WARRANTY; without even the implied warranty of
	18	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	19	GNU General Public License for more details.
	20
	21	You should have received a copy of the GNU General Public License
	22	along with this program; if not, write to the Free Software
	23	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
	24
	25
	26	/* This file is part of ELF support for BFD, and contains the portions
	27	that describe how ELF is represented externally by the BFD library.
	28	I.E. it describes the in-file representation of ELF. It requires
	29	the elf-common.h file which contains the portions that are common to
	30	both the internal and external representations. */
	31
	32	/* The 64-bit stuff is kind of random. Perhaps someone will publish a
	33	spec someday. */
	34
	35	#ifndef _ELF_EXTERNAL_H
	36	#define _ELF_EXTERNAL_H
	37
	38	/* ELF Header (32-bit implementations) */
	39
	40	typedef struct {
	41	unsigned char e_ident[16]; /* ELF "magic number" */
	42	unsigned char e_type[2]; /* Identifies object file type */
	43	unsigned char e_machine[2]; /* Specifies required architecture */
	44	unsigned char e_version[4]; /* Identifies object file version */
	45	unsigned char e_entry[4]; /* Entry point virtual address */
	46	unsigned char e_phoff[4]; /* Program header table file offset */
	47	unsigned char e_shoff[4]; /* Section header table file offset */
	48	unsigned char e_flags[4]; /* Processor-specific flags */
	49	unsigned char e_ehsize[2]; /* ELF header size in bytes */
	50	unsigned char e_phentsize[2]; /* Program header table entry size */
	51	unsigned char e_phnum[2]; /* Program header table entry count */
	52	unsigned char e_shentsize[2]; /* Section header table entry size */
	53	unsigned char e_shnum[2]; /* Section header table entry count */
	54	unsigned char e_shstrndx[2]; /* Section header string table index */
	55	} Elf32_External_Ehdr;
	56
	57	typedef struct {
	58	unsigned char e_ident[16]; /* ELF "magic number" */
	59	unsigned char e_type[2]; /* Identifies object file type */
	60	unsigned char e_machine[2]; /* Specifies required architecture */
	61	unsigned char e_version[4]; /* Identifies object file version */
	62	unsigned char e_entry[8]; /* Entry point virtual address */
	63	unsigned char e_phoff[8]; /* Program header table file offset */
	64	unsigned char e_shoff[8]; /* Section header table file offset */
	65	unsigned char e_flags[4]; /* Processor-specific flags */
	66	unsigned char e_ehsize[2]; /* ELF header size in bytes */
	67	unsigned char e_phentsize[2]; /* Program header table entry size */
68	unsigned char e_phnum[2]; /* Program header table entry count */
69	unsigned char e_shentsize[2]; /* Section header table entry size */
70	unsigned char e_shnum[2]; /* Section header table entry count */
71	unsigned char e_shstrndx[2]; /* Section header string table index */
72	} Elf64_External_Ehdr;
73
74	/* Program header */
75
76	typedef struct {
77	unsigned char p_type[4]; /* Identifies program segment type */
78	unsigned char p_offset[4]; /* Segment file offset */
79	unsigned char p_vaddr[4]; /* Segment virtual address */
80	unsigned char p_paddr[4]; /* Segment physical address */
81	unsigned char p_filesz[4]; /* Segment size in file */
82	unsigned char p_memsz[4]; /* Segment size in memory */
83	unsigned char p_flags[4]; /* Segment flags */
84	unsigned char p_align[4]; /* Segment alignment, file & memory */
85	} Elf32_External_Phdr;
86
87	typedef struct {
88	unsigned char p_type[4]; /* Identifies program segment type */
89	unsigned char p_flags[4]; /* Segment flags */
90	unsigned char p_offset[8]; /* Segment file offset */
91	unsigned char p_vaddr[8]; /* Segment virtual address */
92	unsigned char p_paddr[8]; /* Segment physical address */
93	unsigned char p_filesz[8]; /* Segment size in file */
94	unsigned char p_memsz[8]; /* Segment size in memory */
95	unsigned char p_align[8]; /* Segment alignment, file & memory */
96	} Elf64_External_Phdr;
97
98	/* Section header */
99
100	typedef struct {
101	unsigned char sh_name[4]; /* Section name, index in string tbl */
102	unsigned char sh_type[4]; /* Type of section */
103	unsigned char sh_flags[4]; /* Miscellaneous section attributes */
104	unsigned char sh_addr[4]; /* Section virtual addr at execution */
105	unsigned char sh_offset[4]; /* Section file offset */
106	unsigned char sh_size[4]; /* Size of section in bytes */
107	unsigned char sh_link[4]; /* Index of another section */
108	unsigned char sh_info[4]; /* Additional section information */
109	unsigned char sh_addralign[4]; /* Section alignment */
110	unsigned char sh_entsize[4]; /* Entry size if section holds table */
111	} Elf32_External_Shdr;
112
113	typedef struct {
114	unsigned char sh_name[4]; /* Section name, index in string tbl */
115	unsigned char sh_type[4]; /* Type of section */
116	unsigned char sh_flags[8]; /* Miscellaneous section attributes */
117	unsigned char sh_addr[8]; /* Section virtual addr at execution */
118	unsigned char sh_offset[8]; /* Section file offset */
119	unsigned char sh_size[8]; /* Size of section in bytes */
120	unsigned char sh_link[4]; /* Index of another section */
121	unsigned char sh_info[4]; /* Additional section information */
122	unsigned char sh_addralign[8]; /* Section alignment */
123	unsigned char sh_entsize[8]; /* Entry size if section holds table */
124	} Elf64_External_Shdr;
125
126	/* Symbol table entry */
127
128	typedef struct {
129	unsigned char st_name[4]; /* Symbol name, index in string tbl */
130	unsigned char st_value[4]; /* Value of the symbol */
131	unsigned char st_size[4]; /* Associated symbol size */
132	unsigned char st_info[1]; /* Type and binding attributes */
133	unsigned char st_other[1]; /* No defined meaning, 0 */
134	unsigned char st_shndx[2]; /* Associated section index */
135	} Elf32_External_Sym;
136
137	typedef struct {
138	unsigned char st_name[4]; /* Symbol name, index in string tbl */
139	unsigned char st_info[1]; /* Type and binding attributes */
140	unsigned char st_other[1]; /* No defined meaning, 0 */
141	unsigned char st_shndx[2]; /* Associated section index */
142	unsigned char st_value[8]; /* Value of the symbol */
143	unsigned char st_size[8]; /* Associated symbol size */
144	} Elf64_External_Sym;
145
146	/* Note segments */
147
148	typedef struct {
149	unsigned char namesz[4]; /* Size of entry's owner string */
150	unsigned char descsz[4]; /* Size of the note descriptor */
151	unsigned char type[4]; /* Interpretation of the descriptor */
152	char name[1]; /* Start of the name+desc data */
153	} Elf_External_Note;
154
155	/* Relocation Entries */
156	typedef struct {
157	unsigned char r_offset[4]; /* Location at which to apply the action */
158	unsigned char r_info[4]; /* index and type of relocation */
159	} Elf32_External_Rel;
160
161	typedef struct {
162	unsigned char r_offset[4]; /* Location at which to apply the action */
163	unsigned char r_info[4]; /* index and type of relocation */
164	unsigned char r_addend[4]; /* Constant addend used to compute value */
165	} Elf32_External_Rela;
166
167	typedef struct {
168	unsigned char r_offset[8]; /* Location at which to apply the action */
169	unsigned char r_info[8]; /* index and type of relocation */
170	} Elf64_External_Rel;
171
172	typedef struct {
173	unsigned char r_offset[8]; /* Location at which to apply the action */
174	unsigned char r_info[8]; /* index and type of relocation */
175	unsigned char r_addend[8]; /* Constant addend used to compute value */
176	} Elf64_External_Rela;
177
178	/* dynamic section structure */
179
180	typedef struct {
181	unsigned char d_tag[4]; /* entry tag value */
182	union {
183	unsigned char d_val[4];
184	unsigned char d_ptr[4];
185	} d_un;
186	} Elf32_External_Dyn;
187
188	typedef struct {
189	unsigned char d_tag[8]; /* entry tag value */
190	union {
191	unsigned char d_val[8];
192	unsigned char d_ptr[8];
193	} d_un;
194	} Elf64_External_Dyn;
195
196	/* The version structures are currently size independent. They are
197	named without a 32 or 64. If that ever changes, these structures
198	will need to be renamed. */
199
200	/* This structure appears in a SHT_GNU_verdef section. */
201
202	typedef struct {
203	unsigned char vd_version[2];
204	unsigned char vd_flags[2];
205	unsigned char vd_ndx[2];
206	unsigned char vd_cnt[2];
207	unsigned char vd_hash[4];
208	unsigned char vd_aux[4];
209	unsigned char vd_next[4];
210	} Elf_External_Verdef;
211
212	/* This structure appears in a SHT_GNU_verdef section. */
213
214	typedef struct {
215	unsigned char vda_name[4];
216	unsigned char vda_next[4];
217	} Elf_External_Verdaux;
218
219	/* This structure appears in a SHT_GNU_verneed section. */
220
221	typedef struct {
222	unsigned char vn_version[2];
223	unsigned char vn_cnt[2];
224	unsigned char vn_file[4];
225	unsigned char vn_aux[4];
226	unsigned char vn_next[4];
227	} Elf_External_Verneed;
228
229	/* This structure appears in a SHT_GNU_verneed section. */
230
231	typedef struct {
232	unsigned char vna_hash[4];
233	unsigned char vna_flags[2];
234	unsigned char vna_other[2];
235	unsigned char vna_name[4];
236	unsigned char vna_next[4];
237	} Elf_External_Vernaux;
238
239	/* This structure appears in a SHT_GNU_versym section. This is not a
240	standard ELF structure; ELF just uses Elf32_Half. */
241
242	typedef struct {
243	unsigned char vs_vers[2];
244	}
245	#ifdef __GNUC__
246	__attribute__ ((packed))
247	#endif
248	Elf_External_Versym;
249
250	/* Structure for syminfo section. */
251	typedef struct
252	{
253	unsigned char si_boundto[2];
254	unsigned char si_flags[2];
255	} Elf_External_Syminfo;
256
257	#endif /* _ELF_EXTERNAL_H */