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[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [include/] [coff/] [alpha.h] - Blame information for rev 21

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/* ECOFF support on Alpha machines.
2
   coff/ecoff.h must be included before this file.
3
 
4
   Copyright 2001, 2005, 2010 Free Software Foundation, Inc.
5
 
6
   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 3 of the License, or
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   (at your option) any later version.
10
 
11
   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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16
   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,
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   MA 02110-1301, USA.  */
20
 
21
/********************** FILE HEADER **********************/
22
 
23
struct external_filehdr
24
{
25
  unsigned char f_magic[2];     /* magic number                 */
26
  unsigned char f_nscns[2];     /* number of sections           */
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  unsigned char f_timdat[4];    /* time & date stamp            */
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  unsigned char f_symptr[8];    /* file pointer to symtab       */
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  unsigned char f_nsyms[4];     /* number of symtab entries     */
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  unsigned char f_opthdr[2];    /* sizeof(optional hdr)         */
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  unsigned char f_flags[2];     /* flags                        */
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};
33
 
34
/* Magic numbers are defined in coff/ecoff.h.  */
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#define ALPHA_ECOFF_BADMAG(x) \
36
  ((x).f_magic != ALPHA_MAGIC && (x).f_magic != ALPHA_MAGIC_BSD)
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38
#define ALPHA_ECOFF_COMPRESSEDMAG(x) \
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  ((x).f_magic == ALPHA_MAGIC_COMPRESSED)
40
 
41
/* The object type is encoded in the f_flags.  */
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#define F_ALPHA_OBJECT_TYPE_MASK        0x3000
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#define F_ALPHA_NO_SHARED               0x1000
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#define F_ALPHA_SHARABLE                0x2000
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#define F_ALPHA_CALL_SHARED             0x3000
46
 
47
#define FILHDR  struct external_filehdr
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#define FILHSZ  24
49
 
50
/********************** AOUT "OPTIONAL HEADER" **********************/
51
 
52
typedef struct external_aouthdr
53
{
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  unsigned char magic[2];       /* type of file                         */
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  unsigned char vstamp[2];      /* version stamp                        */
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  unsigned char bldrev[2];      /* ?? */
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  unsigned char padding[2];     /* pad to quadword boundary             */
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  unsigned char tsize[8];       /* text size in bytes                   */
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  unsigned char dsize[8];       /* initialized data "  "                */
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  unsigned char bsize[8];       /* uninitialized data "   "             */
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  unsigned char entry[8];       /* entry pt.                            */
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  unsigned char text_start[8];  /* base of text used for this file */
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  unsigned char data_start[8];  /* base of data used for this file */
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  unsigned char bss_start[8];   /* base of bss used for this file */
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  unsigned char gprmask[4];     /* bitmask of general registers used */
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  unsigned char fprmask[4];     /* bitmask of floating point registers used */
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  unsigned char gp_value[8];    /* value for gp register */
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} AOUTHDR;
69
 
70
/* compute size of a header */
71
 
72
#define AOUTSZ 80
73
#define AOUTHDRSZ 80
74
 
75
/********************** SECTION HEADER **********************/
76
 
77
struct external_scnhdr
78
{
79
  unsigned char s_name[8];      /* section name                 */
80
  unsigned char s_paddr[8];     /* physical address, aliased s_nlib */
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  unsigned char s_vaddr[8];     /* virtual address              */
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  unsigned char s_size[8];      /* section size                 */
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  unsigned char s_scnptr[8];    /* file ptr to raw data for section */
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  unsigned char s_relptr[8];    /* file ptr to relocation       */
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  unsigned char s_lnnoptr[8];   /* file ptr to line numbers     */
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  unsigned char s_nreloc[2];    /* number of relocation entries */
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  unsigned char s_nlnno[2];     /* number of line number entries*/
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  unsigned char s_flags[4];     /* flags                        */
89
};
90
 
91
#define SCNHDR  struct external_scnhdr
92
#define SCNHSZ  64
93
 
94
/********************** RELOCATION DIRECTIVES **********************/
95
 
96
struct external_reloc
97
{
98
  unsigned char r_vaddr[8];
99
  unsigned char r_symndx[4];
100
  unsigned char r_bits[4];
101
};
102
 
103
#define RELOC struct external_reloc
104
#define RELSZ 16
105
 
106
/* Constants to unpack the r_bits field.  The Alpha seems to always be
107
   little endian, so I haven't bothered to define big endian variants
108
   of these.  */
109
 
110
#define RELOC_BITS0_TYPE_LITTLE                 0xff
111
#define RELOC_BITS0_TYPE_SH_LITTLE              0
112
 
113
#define RELOC_BITS1_EXTERN_LITTLE               0x01
114
 
115
#define RELOC_BITS1_OFFSET_LITTLE               0x7e
116
#define RELOC_BITS1_OFFSET_SH_LITTLE            1
117
 
118
#define RELOC_BITS1_RESERVED_LITTLE             0x80
119
#define RELOC_BITS1_RESERVED_SH_LITTLE          7
120
#define RELOC_BITS2_RESERVED_LITTLE             0xff
121
#define RELOC_BITS2_RESERVED_SH_LEFT_LITTLE     1
122
#define RELOC_BITS3_RESERVED_LITTLE             0x03
123
#define RELOC_BITS3_RESERVED_SH_LEFT_LITTLE     9
124
 
125
#define RELOC_BITS3_SIZE_LITTLE                 0xfc
126
#define RELOC_BITS3_SIZE_SH_LITTLE              2
127
 
128
/* The r_type field in a reloc is one of the following values.  */
129
#define ALPHA_R_IGNORE          0
130
#define ALPHA_R_REFLONG         1
131
#define ALPHA_R_REFQUAD         2
132
#define ALPHA_R_GPREL32         3
133
#define ALPHA_R_LITERAL         4
134
#define ALPHA_R_LITUSE          5
135
#define ALPHA_R_GPDISP          6
136
#define ALPHA_R_BRADDR          7
137
#define ALPHA_R_HINT            8
138
#define ALPHA_R_SREL16          9
139
#define ALPHA_R_SREL32         10
140
#define ALPHA_R_SREL64         11
141
#define ALPHA_R_OP_PUSH        12
142
#define ALPHA_R_OP_STORE       13
143
#define ALPHA_R_OP_PSUB        14
144
#define ALPHA_R_OP_PRSHIFT     15
145
#define ALPHA_R_GPVALUE        16
146
#define ALPHA_R_GPRELHIGH      17
147
#define ALPHA_R_GPRELLOW       18
148
#define ALPHA_R_IMMED          19
149
 
150
/* Overloaded reloc value used by Net- and OpenBSD.  */
151
#define ALPHA_R_LITERALSLEAZY  17
152
 
153
/* With ALPHA_R_LITUSE, the r_size field is one of the following values.  */
154
#define ALPHA_R_LU_BASE         1
155
#define ALPHA_R_LU_BYTOFF       2
156
#define ALPHA_R_LU_JSR          3
157
 
158
/* With ALPHA_R_IMMED, the r_size field is one of the following values.  */
159
#define ALPHA_R_IMMED_GP_16     1
160
#define ALPHA_R_IMMED_GP_HI32   2
161
#define ALPHA_R_IMMED_SCN_HI32  3
162
#define ALPHA_R_IMMED_BR_HI32   4
163
#define ALPHA_R_IMMED_LO32      5
164
 
165
/********************** SYMBOLIC INFORMATION **********************/
166
 
167
/* Written by John Gilmore.  */
168
 
169
/* ECOFF uses COFF-like section structures, but its own symbol format.
170
   This file defines the symbol format in fields whose size and alignment
171
   will not vary on different host systems.  */
172
 
173
/* File header as a set of bytes */
174
 
175
struct hdr_ext
176
{
177
        unsigned char   h_magic[2];
178
        unsigned char   h_vstamp[2];
179
        unsigned char   h_ilineMax[4];
180
        unsigned char   h_idnMax[4];
181
        unsigned char   h_ipdMax[4];
182
        unsigned char   h_isymMax[4];
183
        unsigned char   h_ioptMax[4];
184
        unsigned char   h_iauxMax[4];
185
        unsigned char   h_issMax[4];
186
        unsigned char   h_issExtMax[4];
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        unsigned char   h_ifdMax[4];
188
        unsigned char   h_crfd[4];
189
        unsigned char   h_iextMax[4];
190
        unsigned char   h_cbLine[8];
191
        unsigned char   h_cbLineOffset[8];
192
        unsigned char   h_cbDnOffset[8];
193
        unsigned char   h_cbPdOffset[8];
194
        unsigned char   h_cbSymOffset[8];
195
        unsigned char   h_cbOptOffset[8];
196
        unsigned char   h_cbAuxOffset[8];
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        unsigned char   h_cbSsOffset[8];
198
        unsigned char   h_cbSsExtOffset[8];
199
        unsigned char   h_cbFdOffset[8];
200
        unsigned char   h_cbRfdOffset[8];
201
        unsigned char   h_cbExtOffset[8];
202
};
203
 
204
/* File descriptor external record */
205
 
206
struct fdr_ext
207
{
208
        unsigned char   f_adr[8];
209
        unsigned char   f_cbLineOffset[8];
210
        unsigned char   f_cbLine[8];
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        unsigned char   f_cbSs[8];
212
        unsigned char   f_rss[4];
213
        unsigned char   f_issBase[4];
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        unsigned char   f_isymBase[4];
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        unsigned char   f_csym[4];
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        unsigned char   f_ilineBase[4];
217
        unsigned char   f_cline[4];
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        unsigned char   f_ioptBase[4];
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        unsigned char   f_copt[4];
220
        unsigned char   f_ipdFirst[4];
221
        unsigned char   f_cpd[4];
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        unsigned char   f_iauxBase[4];
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        unsigned char   f_caux[4];
224
        unsigned char   f_rfdBase[4];
225
        unsigned char   f_crfd[4];
226
        unsigned char   f_bits1[1];
227
        unsigned char   f_bits2[3];
228
        unsigned char   f_padding[4];
229
};
230
 
231
#define FDR_BITS1_LANG_BIG              0xF8
232
#define FDR_BITS1_LANG_SH_BIG           3
233
#define FDR_BITS1_LANG_LITTLE           0x1F
234
#define FDR_BITS1_LANG_SH_LITTLE        0
235
 
236
#define FDR_BITS1_FMERGE_BIG            0x04
237
#define FDR_BITS1_FMERGE_LITTLE         0x20
238
 
239
#define FDR_BITS1_FREADIN_BIG           0x02
240
#define FDR_BITS1_FREADIN_LITTLE        0x40
241
 
242
#define FDR_BITS1_FBIGENDIAN_BIG        0x01
243
#define FDR_BITS1_FBIGENDIAN_LITTLE     0x80
244
 
245
#define FDR_BITS2_GLEVEL_BIG            0xC0
246
#define FDR_BITS2_GLEVEL_SH_BIG         6
247
#define FDR_BITS2_GLEVEL_LITTLE         0x03
248
#define FDR_BITS2_GLEVEL_SH_LITTLE      0
249
 
250
/* We ignore the `reserved' field in bits2. */
251
 
252
/* Procedure descriptor external record */
253
 
254
struct pdr_ext {
255
        unsigned char   p_adr[8];
256
        unsigned char   p_cbLineOffset[8];
257
        unsigned char   p_isym[4];
258
        unsigned char   p_iline[4];
259
        unsigned char   p_regmask[4];
260
        unsigned char   p_regoffset[4];
261
        unsigned char   p_iopt[4];
262
        unsigned char   p_fregmask[4];
263
        unsigned char   p_fregoffset[4];
264
        unsigned char   p_frameoffset[4];
265
        unsigned char   p_lnLow[4];
266
        unsigned char   p_lnHigh[4];
267
        unsigned char   p_gp_prologue[1];
268
        unsigned char   p_bits1[1];
269
        unsigned char   p_bits2[1];
270
        unsigned char   p_localoff[1];
271
        unsigned char   p_framereg[2];
272
        unsigned char   p_pcreg[2];
273
};
274
 
275
#define PDR_BITS1_GP_USED_BIG           0x80
276
#define PDR_BITS1_REG_FRAME_BIG         0x40
277
#define PDR_BITS1_PROF_BIG              0x20
278
#define PDR_BITS1_RESERVED_BIG          0x1f
279
#define PDR_BITS1_RESERVED_SH_LEFT_BIG  8
280
#define PDR_BITS2_RESERVED_BIG          0xff
281
#define PDR_BITS2_RESERVED_SH_BIG       0
282
 
283
#define PDR_BITS1_GP_USED_LITTLE        0x01
284
#define PDR_BITS1_REG_FRAME_LITTLE      0x02
285
#define PDR_BITS1_PROF_LITTLE           0x04
286
#define PDR_BITS1_RESERVED_LITTLE       0xf8
287
#define PDR_BITS1_RESERVED_SH_LITTLE    3
288
#define PDR_BITS2_RESERVED_LITTLE       0xff
289
#define PDR_BITS2_RESERVED_SH_LEFT_LITTLE 5
290
 
291
/* Line numbers */
292
 
293
struct line_ext {
294
        unsigned char   l_line[4];
295
};
296
 
297
/* Symbol external record */
298
 
299
struct sym_ext {
300
        unsigned char   s_value[8];
301
        unsigned char   s_iss[4];
302
        unsigned char   s_bits1[1];
303
        unsigned char   s_bits2[1];
304
        unsigned char   s_bits3[1];
305
        unsigned char   s_bits4[1];
306
};
307
 
308
#define SYM_BITS1_ST_BIG                0xFC
309
#define SYM_BITS1_ST_SH_BIG             2
310
#define SYM_BITS1_ST_LITTLE             0x3F
311
#define SYM_BITS1_ST_SH_LITTLE          0
312
 
313
#define SYM_BITS1_SC_BIG                0x03
314
#define SYM_BITS1_SC_SH_LEFT_BIG        3
315
#define SYM_BITS1_SC_LITTLE             0xC0
316
#define SYM_BITS1_SC_SH_LITTLE          6
317
 
318
#define SYM_BITS2_SC_BIG                0xE0
319
#define SYM_BITS2_SC_SH_BIG             5
320
#define SYM_BITS2_SC_LITTLE             0x07
321
#define SYM_BITS2_SC_SH_LEFT_LITTLE     2
322
 
323
#define SYM_BITS2_RESERVED_BIG          0x10
324
#define SYM_BITS2_RESERVED_LITTLE       0x08
325
 
326
#define SYM_BITS2_INDEX_BIG             0x0F
327
#define SYM_BITS2_INDEX_SH_LEFT_BIG     16
328
#define SYM_BITS2_INDEX_LITTLE          0xF0
329
#define SYM_BITS2_INDEX_SH_LITTLE       4
330
 
331
#define SYM_BITS3_INDEX_SH_LEFT_BIG     8
332
#define SYM_BITS3_INDEX_SH_LEFT_LITTLE  4
333
 
334
#define SYM_BITS4_INDEX_SH_LEFT_BIG     0
335
#define SYM_BITS4_INDEX_SH_LEFT_LITTLE  12
336
 
337
/* External symbol external record */
338
 
339
struct ext_ext {
340
        struct  sym_ext es_asym;
341
        unsigned char   es_bits1[1];
342
        unsigned char   es_bits2[3];
343
        unsigned char   es_ifd[4];
344
};
345
 
346
#define EXT_BITS1_JMPTBL_BIG            0x80
347
#define EXT_BITS1_JMPTBL_LITTLE         0x01
348
 
349
#define EXT_BITS1_COBOL_MAIN_BIG        0x40
350
#define EXT_BITS1_COBOL_MAIN_LITTLE     0x02
351
 
352
#define EXT_BITS1_WEAKEXT_BIG           0x20
353
#define EXT_BITS1_WEAKEXT_LITTLE        0x04
354
 
355
/* Dense numbers external record */
356
 
357
struct dnr_ext {
358
        unsigned char   d_rfd[4];
359
        unsigned char   d_index[4];
360
};
361
 
362
/* Relative file descriptor */
363
 
364
struct rfd_ext {
365
  unsigned char rfd[4];
366
};
367
 
368
/* Optimizer symbol external record */
369
 
370
struct opt_ext {
371
  unsigned char o_bits1[1];
372
  unsigned char o_bits2[1];
373
  unsigned char o_bits3[1];
374
  unsigned char o_bits4[1];
375
  struct rndx_ext o_rndx;
376
  unsigned char o_offset[4];
377
};
378
 
379
#define OPT_BITS2_VALUE_SH_LEFT_BIG     16
380
#define OPT_BITS2_VALUE_SH_LEFT_LITTLE  0
381
 
382
#define OPT_BITS3_VALUE_SH_LEFT_BIG     8
383
#define OPT_BITS3_VALUE_SH_LEFT_LITTLE  8
384
 
385
#define OPT_BITS4_VALUE_SH_LEFT_BIG     0
386
#define OPT_BITS4_VALUE_SH_LEFT_LITTLE  16

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