[binutils.git] / include / elf / external.h

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