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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-6.8/] [include/] [elf/] [external.h] - Blame information for rev 856

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1 24 jeremybenn
/* ELF support for BFD.
2 225 jeremybenn
   Copyright 1991, 1992, 1993, 1995, 1997, 1998, 1999, 2001, 2003, 2005,
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   2008 Free Software Foundation, Inc.
4 24 jeremybenn
 
5
   Written by Fred Fish @ Cygnus Support, from information published
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   in "UNIX System V Release 4, Programmers Guide: ANSI C and
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   Programming Support Tools".
8
 
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This file is part of BFD, the Binary File Descriptor library.
10
 
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
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/* This file is part of ELF support for BFD, and contains the portions
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   that describe how ELF is represented externally by the BFD library.
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   I.E. it describes the in-file representation of ELF.  It requires
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   the elf/common.h file which contains the portions that are common to
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   both the internal and external representations. */
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/* The 64-bit stuff is kind of random.  Perhaps someone will publish a
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   spec someday.  */
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#ifndef _ELF_EXTERNAL_H
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#define _ELF_EXTERNAL_H
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38 225 jeremybenn
/* Special section indices, which may show up in st_shndx fields, among
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   other places.  */
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#define SHN_LORESERVE   0xFF00          /* Begin range of reserved indices */
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#define SHN_LOPROC      0xFF00          /* Begin range of appl-specific */
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#define SHN_HIPROC      0xFF1F          /* End range of appl-specific */
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#define SHN_LOOS        0xFF20          /* OS specific semantics, lo */
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#define SHN_HIOS        0xFF3F          /* OS specific semantics, hi */
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#define SHN_ABS         0xFFF1          /* Associated symbol is absolute */
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#define SHN_COMMON      0xFFF2          /* Associated symbol is in common */
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#define SHN_XINDEX      0xFFFF          /* Section index is held elsewhere */
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#define SHN_HIRESERVE   0xFFFF          /* End range of reserved indices */
50
 
51 24 jeremybenn
/* ELF Header (32-bit implementations) */
52
 
53
typedef struct {
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  unsigned char e_ident[16];            /* ELF "magic number" */
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  unsigned char e_type[2];              /* Identifies object file type */
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  unsigned char e_machine[2];           /* Specifies required architecture */
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  unsigned char e_version[4];           /* Identifies object file version */
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  unsigned char e_entry[4];             /* Entry point virtual address */
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  unsigned char e_phoff[4];             /* Program header table file offset */
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  unsigned char e_shoff[4];             /* Section header table file offset */
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  unsigned char e_flags[4];             /* Processor-specific flags */
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  unsigned char e_ehsize[2];            /* ELF header size in bytes */
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  unsigned char e_phentsize[2];         /* Program header table entry size */
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  unsigned char e_phnum[2];             /* Program header table entry count */
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  unsigned char e_shentsize[2];         /* Section header table entry size */
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  unsigned char e_shnum[2];             /* Section header table entry count */
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  unsigned char e_shstrndx[2];          /* Section header string table index */
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} Elf32_External_Ehdr;
69
 
70
typedef struct {
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  unsigned char e_ident[16];            /* ELF "magic number" */
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  unsigned char e_type[2];              /* Identifies object file type */
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  unsigned char e_machine[2];           /* Specifies required architecture */
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  unsigned char e_version[4];           /* Identifies object file version */
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  unsigned char e_entry[8];             /* Entry point virtual address */
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  unsigned char e_phoff[8];             /* Program header table file offset */
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  unsigned char e_shoff[8];             /* Section header table file offset */
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  unsigned char e_flags[4];             /* Processor-specific flags */
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  unsigned char e_ehsize[2];            /* ELF header size in bytes */
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  unsigned char e_phentsize[2];         /* Program header table entry size */
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  unsigned char e_phnum[2];             /* Program header table entry count */
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  unsigned char e_shentsize[2];         /* Section header table entry size */
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  unsigned char e_shnum[2];             /* Section header table entry count */
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  unsigned char e_shstrndx[2];          /* Section header string table index */
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} Elf64_External_Ehdr;
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87
/* Program header */
88
 
89
typedef struct {
90
  unsigned char p_type[4];              /* Identifies program segment type */
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  unsigned char p_offset[4];            /* Segment file offset */
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  unsigned char p_vaddr[4];             /* Segment virtual address */
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  unsigned char p_paddr[4];             /* Segment physical address */
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  unsigned char p_filesz[4];            /* Segment size in file */
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  unsigned char p_memsz[4];             /* Segment size in memory */
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  unsigned char p_flags[4];             /* Segment flags */
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  unsigned char p_align[4];             /* Segment alignment, file & memory */
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} Elf32_External_Phdr;
99
 
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typedef struct {
101
  unsigned char p_type[4];              /* Identifies program segment type */
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  unsigned char p_flags[4];             /* Segment flags */
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  unsigned char p_offset[8];            /* Segment file offset */
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  unsigned char p_vaddr[8];             /* Segment virtual address */
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  unsigned char p_paddr[8];             /* Segment physical address */
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  unsigned char p_filesz[8];            /* Segment size in file */
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  unsigned char p_memsz[8];             /* Segment size in memory */
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  unsigned char p_align[8];             /* Segment alignment, file & memory */
109
} Elf64_External_Phdr;
110
 
111
/* Section header */
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[4];            /* Miscellaneous section attributes */
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  unsigned char sh_addr[4];             /* Section virtual addr at execution */
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  unsigned char sh_offset[4];           /* Section file offset */
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  unsigned char sh_size[4];             /* Size of section in bytes */
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  unsigned char sh_link[4];             /* Index of another section */
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  unsigned char sh_info[4];             /* Additional section information */
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  unsigned char sh_addralign[4];        /* Section alignment */
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  unsigned char sh_entsize[4];          /* Entry size if section holds table */
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} Elf32_External_Shdr;
125
 
126
typedef struct {
127
  unsigned char sh_name[4];             /* Section name, index in string tbl */
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  unsigned char sh_type[4];             /* Type of section */
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  unsigned char sh_flags[8];            /* Miscellaneous section attributes */
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  unsigned char sh_addr[8];             /* Section virtual addr at execution */
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  unsigned char sh_offset[8];           /* Section file offset */
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  unsigned char sh_size[8];             /* Size of section in bytes */
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  unsigned char sh_link[4];             /* Index of another section */
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  unsigned char sh_info[4];             /* Additional section information */
135
  unsigned char sh_addralign[8];        /* Section alignment */
136
  unsigned char sh_entsize[8];          /* Entry size if section holds table */
137
} Elf64_External_Shdr;
138
 
139
/* Symbol table entry */
140
 
141
typedef struct {
142
  unsigned char st_name[4];             /* Symbol name, index in string tbl */
143
  unsigned char st_value[4];            /* Value of the symbol */
144
  unsigned char st_size[4];             /* Associated symbol size */
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  unsigned char st_info[1];             /* Type and binding attributes */
146
  unsigned char st_other[1];            /* No defined meaning, 0 */
147
  unsigned char st_shndx[2];            /* Associated section index */
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} Elf32_External_Sym;
149
 
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typedef struct {
151
  unsigned char st_name[4];             /* Symbol name, index in string tbl */
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  unsigned char st_info[1];             /* Type and binding attributes */
153
  unsigned char st_other[1];            /* No defined meaning, 0 */
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  unsigned char st_shndx[2];            /* Associated section index */
155
  unsigned char st_value[8];            /* Value of the symbol */
156
  unsigned char st_size[8];             /* Associated symbol size */
157
} Elf64_External_Sym;
158
 
159
typedef struct {
160
  unsigned char est_shndx[4];           /* Section index */
161
} Elf_External_Sym_Shndx;
162
 
163
/* Note segments */
164
 
165
typedef struct {
166
  unsigned char namesz[4];              /* Size of entry's owner string */
167
  unsigned char descsz[4];              /* Size of the note descriptor */
168
  unsigned char type[4];                /* Interpretation of the descriptor */
169
  char          name[1];                /* Start of the name+desc data */
170
} Elf_External_Note;
171
 
172
/* Relocation Entries */
173
typedef struct {
174
  unsigned char r_offset[4];    /* Location at which to apply the action */
175
  unsigned char r_info[4];      /* index and type of relocation */
176
} Elf32_External_Rel;
177
 
178
typedef struct {
179
  unsigned char r_offset[4];    /* Location at which to apply the action */
180
  unsigned char r_info[4];      /* index and type of relocation */
181
  unsigned char r_addend[4];    /* Constant addend used to compute value */
182
} Elf32_External_Rela;
183
 
184
typedef struct {
185
  unsigned char r_offset[8];    /* Location at which to apply the action */
186
  unsigned char r_info[8];      /* index and type of relocation */
187
} Elf64_External_Rel;
188
 
189
typedef struct {
190
  unsigned char r_offset[8];    /* Location at which to apply the action */
191
  unsigned char r_info[8];      /* index and type of relocation */
192
  unsigned char r_addend[8];    /* Constant addend used to compute value */
193
} Elf64_External_Rela;
194
 
195
/* dynamic section structure */
196
 
197
typedef struct {
198
  unsigned char d_tag[4];               /* entry tag value */
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  union {
200
    unsigned char       d_val[4];
201
    unsigned char       d_ptr[4];
202
  } d_un;
203
} Elf32_External_Dyn;
204
 
205
typedef struct {
206
  unsigned char d_tag[8];               /* entry tag value */
207
  union {
208
    unsigned char       d_val[8];
209
    unsigned char       d_ptr[8];
210
  } d_un;
211
} Elf64_External_Dyn;
212
 
213
/* The version structures are currently size independent.  They are
214
   named without a 32 or 64.  If that ever changes, these structures
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   will need to be renamed.  */
216
 
217
/* This structure appears in a SHT_GNU_verdef section.  */
218
 
219
typedef struct {
220
  unsigned char         vd_version[2];
221
  unsigned char         vd_flags[2];
222
  unsigned char         vd_ndx[2];
223
  unsigned char         vd_cnt[2];
224
  unsigned char         vd_hash[4];
225
  unsigned char         vd_aux[4];
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  unsigned char         vd_next[4];
227
} Elf_External_Verdef;
228
 
229
/* This structure appears in a SHT_GNU_verdef section.  */
230
 
231
typedef struct {
232
  unsigned char         vda_name[4];
233
  unsigned char         vda_next[4];
234
} Elf_External_Verdaux;
235
 
236
/* This structure appears in a SHT_GNU_verneed section.  */
237
 
238
typedef struct {
239
  unsigned char         vn_version[2];
240
  unsigned char         vn_cnt[2];
241
  unsigned char         vn_file[4];
242
  unsigned char         vn_aux[4];
243
  unsigned char         vn_next[4];
244
} Elf_External_Verneed;
245
 
246
/* This structure appears in a SHT_GNU_verneed section.  */
247
 
248
typedef struct {
249
  unsigned char         vna_hash[4];
250
  unsigned char         vna_flags[2];
251
  unsigned char         vna_other[2];
252
  unsigned char         vna_name[4];
253
  unsigned char         vna_next[4];
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} Elf_External_Vernaux;
255
 
256
/* This structure appears in a SHT_GNU_versym section.  This is not a
257
   standard ELF structure; ELF just uses Elf32_Half.  */
258
 
259
typedef struct {
260
  unsigned char         vs_vers[2];
261
} ATTRIBUTE_PACKED  Elf_External_Versym;
262
 
263
/* Structure for syminfo section.  */
264
typedef struct
265
{
266
  unsigned char         si_boundto[2];
267
  unsigned char         si_flags[2];
268
} Elf_External_Syminfo;
269
 
270
 
271
/* This structure appears on the stack and in NT_AUXV core file notes.  */
272
typedef struct
273
{
274
  unsigned char         a_type[4];
275
  unsigned char         a_val[4];
276
} Elf32_External_Auxv;
277
 
278
typedef struct
279
{
280
  unsigned char         a_type[8];
281
  unsigned char         a_val[8];
282
} Elf64_External_Auxv;
283
 
284
/* Size of SHT_GROUP section entry.  */
285
 
286
#define GRP_ENTRY_SIZE          4
287
 
288
#endif /* _ELF_EXTERNAL_H */

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