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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-7.1/] [opcodes/] [ppc-dis.c] - Blame information for rev 853

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1 227 jeremybenn
/* ppc-dis.c -- Disassemble PowerPC instructions
2
   Copyright 1994, 1995, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
3
   2008, 2009, 2010 Free Software Foundation, Inc.
4
   Written by Ian Lance Taylor, Cygnus Support
5
 
6
   This file is part of the GNU opcodes library.
7
 
8
   This library is free software; you can redistribute it and/or modify
9
   it under the terms of the GNU General Public License as published by
10
   the Free Software Foundation; either version 3, or (at your option)
11
   any later version.
12
 
13
   It is distributed in the hope that it will be useful, but WITHOUT
14
   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15
   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
16
   License for more details.
17
 
18
   You should have received a copy of the GNU General Public License
19
   along with this file; see the file COPYING.  If not, write to the
20
   Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
21
   MA 02110-1301, USA.  */
22
 
23
#include <stdio.h>
24
#include "sysdep.h"
25
#include "dis-asm.h"
26
#include "opintl.h"
27
#include "opcode/ppc.h"
28
 
29
/* This file provides several disassembler functions, all of which use
30
   the disassembler interface defined in dis-asm.h.  Several functions
31
   are provided because this file handles disassembly for the PowerPC
32
   in both big and little endian mode and also for the POWER (RS/6000)
33
   chip.  */
34
static int print_insn_powerpc (bfd_vma, struct disassemble_info *, int,
35
                               ppc_cpu_t);
36
 
37
struct dis_private
38
{
39
  /* Stash the result of parsing disassembler_options here.  */
40
  ppc_cpu_t dialect;
41
};
42
 
43
#define POWERPC_DIALECT(INFO) \
44
  (((struct dis_private *) ((INFO)->private_data))->dialect)
45
 
46
struct ppc_mopt {
47
  const char *opt;
48
  ppc_cpu_t cpu;
49
  ppc_cpu_t sticky;
50
};
51
 
52
struct ppc_mopt ppc_opts[] = {
53
  { "403",     (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_403
54
                | PPC_OPCODE_32),
55
 
56
  { "405",     (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_403
57
                | PPC_OPCODE_405 | PPC_OPCODE_32),
58
 
59
  { "440",     (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_32
60
                | PPC_OPCODE_440 | PPC_OPCODE_ISEL | PPC_OPCODE_RFMCI),
61
 
62
  { "464",     (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_32
63
                | PPC_OPCODE_440 | PPC_OPCODE_ISEL | PPC_OPCODE_RFMCI),
64
 
65
  { "476",     (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_ISEL
66
                | PPC_OPCODE_440 | PPC_OPCODE_476 | PPC_OPCODE_POWER4
67
                | PPC_OPCODE_POWER5),
68
 
69
  { "601",     (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_601
70
                | PPC_OPCODE_32),
71
 
72
  { "603",     (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_32),
73
 
74
  { "604",     (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_32),
75
 
76
  { "620",     (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_64),
77
 
78
  { "7400",    (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_ALTIVEC
79
                | PPC_OPCODE_32),
80
 
81
  { "7410",    (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_ALTIVEC
82
                | PPC_OPCODE_32),
83
 
84
  { "7450",    (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_ALTIVEC
85
                | PPC_OPCODE_32),
86
 
87
  { "7455",    (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_ALTIVEC
88
                | PPC_OPCODE_32),
89
 
90
  { "750cl",   (PPC_OPCODE_PPC | PPC_OPCODE_PPCPS)
91
    , 0 },
92
  { "a2",      (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_ISEL
93
                | PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5 | PPC_OPCODE_CACHELCK
94
                | PPC_OPCODE_64 | PPC_OPCODE_A2),
95
 
96
  { "altivec", (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC),
97
    PPC_OPCODE_ALTIVEC },
98
  { "any",     0,
99
    PPC_OPCODE_ANY },
100
  { "booke",   (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_32),
101
 
102
  { "booke32", (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_32),
103
 
104
  { "cell",    (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_64
105
                | PPC_OPCODE_POWER4 | PPC_OPCODE_CELL | PPC_OPCODE_ALTIVEC),
106
 
107
  { "com",     (PPC_OPCODE_COMMON | PPC_OPCODE_32),
108
 
109
  { "e300",    (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_32
110
                | PPC_OPCODE_E300),
111
 
112
  { "e500",    (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_SPE
113
                | PPC_OPCODE_ISEL | PPC_OPCODE_EFS | PPC_OPCODE_BRLOCK
114
                | PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK | PPC_OPCODE_RFMCI
115
                | PPC_OPCODE_E500MC),
116
 
117
  { "e500mc",  (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_ISEL
118
                | PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK | PPC_OPCODE_RFMCI
119
                | PPC_OPCODE_E500MC),
120
 
121
  { "e500mc64",  (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_ISEL
122
                | PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK | PPC_OPCODE_RFMCI
123
                | PPC_OPCODE_64 | PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6
124
                | PPC_OPCODE_POWER7),
125
 
126
  { "e500x2",  (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_SPE
127
                | PPC_OPCODE_ISEL | PPC_OPCODE_EFS | PPC_OPCODE_BRLOCK
128
                | PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK | PPC_OPCODE_RFMCI
129
                | PPC_OPCODE_E500MC),
130
 
131
  { "efs",     (PPC_OPCODE_PPC | PPC_OPCODE_EFS),
132
 
133
  { "power4",  (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_64
134
                | PPC_OPCODE_POWER4),
135
 
136
  { "power5",  (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_64
137
                | PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5),
138
 
139
  { "power6",  (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_64
140
                | PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6
141
                | PPC_OPCODE_ALTIVEC),
142
 
143
  { "power7",  (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_ISEL
144
                | PPC_OPCODE_64 | PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5
145
                | PPC_OPCODE_POWER6 | PPC_OPCODE_POWER7 | PPC_OPCODE_ALTIVEC
146
                | PPC_OPCODE_VSX),
147
 
148
  { "ppc",     (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_32),
149
 
150
  { "ppc32",   (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_32),
151
 
152
  { "ppc64",   (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_64),
153
 
154
  { "ppc64bridge", (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_64_BRIDGE
155
                    | PPC_OPCODE_64),
156
 
157
  { "ppcps",   (PPC_OPCODE_PPC | PPC_OPCODE_PPCPS),
158
 
159
  { "pwr",     (PPC_OPCODE_POWER | PPC_OPCODE_32),
160
 
161
  { "pwr2",    (PPC_OPCODE_POWER | PPC_OPCODE_POWER2 | PPC_OPCODE_32),
162
 
163
  { "pwr4",    (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_64
164
                | PPC_OPCODE_POWER4),
165
 
166
  { "pwr5",    (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_64
167
                | PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5),
168
 
169
  { "pwr5x",   (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_64
170
                | PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5),
171
 
172
  { "pwr6",    (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_64
173
                | PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6
174
                | PPC_OPCODE_ALTIVEC),
175
 
176
  { "pwr7",    (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_ISEL
177
                | PPC_OPCODE_64 | PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5
178
                | PPC_OPCODE_POWER6 | PPC_OPCODE_POWER7 | PPC_OPCODE_ALTIVEC
179
                | PPC_OPCODE_VSX),
180
 
181
  { "pwrx",    (PPC_OPCODE_POWER | PPC_OPCODE_POWER2 | PPC_OPCODE_32),
182
 
183
  { "spe",     (PPC_OPCODE_PPC | PPC_OPCODE_EFS),
184
    PPC_OPCODE_SPE },
185
  { "titan",   (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_32
186
                | PPC_OPCODE_PMR | PPC_OPCODE_RFMCI | PPC_OPCODE_TITAN),
187
 
188
  { "vsx",     (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC),
189
    PPC_OPCODE_VSX },
190
};
191
 
192
/* Handle -m and -M options that set cpu type, and .machine arg.  */
193
 
194
ppc_cpu_t
195
ppc_parse_cpu (ppc_cpu_t ppc_cpu, const char *arg)
196
{
197
  /* Sticky bits.  */
198
  ppc_cpu_t retain_flags = ppc_cpu & (PPC_OPCODE_ALTIVEC | PPC_OPCODE_VSX
199
                                      | PPC_OPCODE_SPE | PPC_OPCODE_ANY);
200
  unsigned int i;
201
 
202
  for (i = 0; i < sizeof (ppc_opts) / sizeof (ppc_opts[0]); i++)
203
    if (strcmp (ppc_opts[i].opt, arg) == 0)
204
      {
205
        if (ppc_opts[i].sticky)
206
          {
207
            retain_flags |= ppc_opts[i].sticky;
208
            if ((ppc_cpu & ~(PPC_OPCODE_ALTIVEC | PPC_OPCODE_VSX
209
                             | PPC_OPCODE_SPE | PPC_OPCODE_ANY)) != 0)
210
              break;
211
          }
212
        ppc_cpu = ppc_opts[i].cpu;
213
        break;
214
      }
215
  if (i >= sizeof (ppc_opts) / sizeof (ppc_opts[0]))
216
    return 0;
217
 
218
  ppc_cpu |= retain_flags;
219
  return ppc_cpu;
220
}
221
 
222
/* Determine which set of machines to disassemble for.  */
223
 
224
static int
225
powerpc_init_dialect (struct disassemble_info *info)
226
{
227
  ppc_cpu_t dialect = 0;
228
  char *arg;
229
  struct dis_private *priv = calloc (sizeof (*priv), 1);
230
 
231
  if (priv == NULL)
232
    return FALSE;
233
 
234
  arg = info->disassembler_options;
235
  while (arg != NULL)
236
    {
237
      ppc_cpu_t new_cpu = 0;
238
      char *end = strchr (arg, ',');
239
 
240
      if (end != NULL)
241
        *end = 0;
242
 
243
      if ((new_cpu = ppc_parse_cpu (dialect, arg)) != 0)
244
        dialect = new_cpu;
245
      else if (strcmp (arg, "32") == 0)
246
        {
247
          dialect &= ~PPC_OPCODE_64;
248
          dialect |= PPC_OPCODE_32;
249
        }
250
      else if (strcmp (arg, "64") == 0)
251
        {
252
          dialect |= PPC_OPCODE_64;
253
          dialect &= ~PPC_OPCODE_32;
254
        }
255
      else
256
        fprintf (stderr, _("warning: ignoring unknown -M%s option\n"), arg);
257
 
258
      if (end != NULL)
259
        *end++ = ',';
260
      arg = end;
261
    }
262
 
263
  if ((dialect & ~(PPC_OPCODE_32 | PPC_OPCODE_64)) == 0)
264
    {
265
      if (info->mach == bfd_mach_ppc64)
266
        dialect |= PPC_OPCODE_64;
267
      else
268
        dialect |= PPC_OPCODE_32;
269
      /* Choose a reasonable default.  */
270
      dialect |= (PPC_OPCODE_PPC | PPC_OPCODE_COMMON | PPC_OPCODE_CLASSIC
271
                  | PPC_OPCODE_601 | PPC_OPCODE_ALTIVEC);
272
    }
273
 
274
  info->private_data = priv;
275
  POWERPC_DIALECT(info) = dialect;
276
 
277
  return TRUE;
278
}
279
 
280
/* Print a big endian PowerPC instruction.  */
281
 
282
int
283
print_insn_big_powerpc (bfd_vma memaddr, struct disassemble_info *info)
284
{
285
  if (info->private_data == NULL && !powerpc_init_dialect (info))
286
    return -1;
287
  return print_insn_powerpc (memaddr, info, 1, POWERPC_DIALECT(info));
288
}
289
 
290
/* Print a little endian PowerPC instruction.  */
291
 
292
int
293
print_insn_little_powerpc (bfd_vma memaddr, struct disassemble_info *info)
294
{
295
  if (info->private_data == NULL && !powerpc_init_dialect (info))
296
    return -1;
297
  return print_insn_powerpc (memaddr, info, 0, POWERPC_DIALECT(info));
298
}
299
 
300
/* Print a POWER (RS/6000) instruction.  */
301
 
302
int
303
print_insn_rs6000 (bfd_vma memaddr, struct disassemble_info *info)
304
{
305
  return print_insn_powerpc (memaddr, info, 1, PPC_OPCODE_POWER);
306
}
307
 
308
/* Extract the operand value from the PowerPC or POWER instruction.  */
309
 
310
static long
311
operand_value_powerpc (const struct powerpc_operand *operand,
312
                       unsigned long insn, ppc_cpu_t dialect)
313
{
314
  long value;
315
  int invalid;
316
  /* Extract the value from the instruction.  */
317
  if (operand->extract)
318
    value = (*operand->extract) (insn, dialect, &invalid);
319
  else
320
    {
321
      value = (insn >> operand->shift) & operand->bitm;
322
      if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
323
        {
324
          /* BITM is always some number of zeros followed by some
325
             number of ones, followed by some numer of zeros.  */
326
          unsigned long top = operand->bitm;
327
          /* top & -top gives the rightmost 1 bit, so this
328
             fills in any trailing zeros.  */
329
          top |= (top & -top) - 1;
330
          top &= ~(top >> 1);
331
          value = (value ^ top) - top;
332
        }
333
    }
334
 
335
  return value;
336
}
337
 
338
/* Determine whether the optional operand(s) should be printed.  */
339
 
340
static int
341
skip_optional_operands (const unsigned char *opindex,
342
                        unsigned long insn, ppc_cpu_t dialect)
343
{
344
  const struct powerpc_operand *operand;
345
 
346
  for (; *opindex != 0; opindex++)
347
    {
348
      operand = &powerpc_operands[*opindex];
349
      if ((operand->flags & PPC_OPERAND_NEXT) != 0
350
          || ((operand->flags & PPC_OPERAND_OPTIONAL) != 0
351
              && operand_value_powerpc (operand, insn, dialect) != 0))
352
        return 0;
353
    }
354
 
355
  return 1;
356
}
357
 
358
/* Print a PowerPC or POWER instruction.  */
359
 
360
static int
361
print_insn_powerpc (bfd_vma memaddr,
362
                    struct disassemble_info *info,
363
                    int bigendian,
364
                    ppc_cpu_t dialect)
365
{
366
  bfd_byte buffer[4];
367
  int status;
368
  unsigned long insn;
369
  const struct powerpc_opcode *opcode;
370
  const struct powerpc_opcode *opcode_end;
371
  unsigned long op;
372
  ppc_cpu_t dialect_orig = dialect;
373
 
374
  status = (*info->read_memory_func) (memaddr, buffer, 4, info);
375
  if (status != 0)
376
    {
377
      (*info->memory_error_func) (status, memaddr, info);
378
      return -1;
379
    }
380
 
381
  if (bigendian)
382
    insn = bfd_getb32 (buffer);
383
  else
384
    insn = bfd_getl32 (buffer);
385
 
386
  /* Get the major opcode of the instruction.  */
387
  op = PPC_OP (insn);
388
 
389
  /* Find the first match in the opcode table.  We could speed this up
390
     a bit by doing a binary search on the major opcode.  */
391
  opcode_end = powerpc_opcodes + powerpc_num_opcodes;
392
 again:
393
  for (opcode = powerpc_opcodes; opcode < opcode_end; opcode++)
394
    {
395
      unsigned long table_op;
396
      const unsigned char *opindex;
397
      const struct powerpc_operand *operand;
398
      int invalid;
399
      int need_comma;
400
      int need_paren;
401
      int skip_optional;
402
 
403
      table_op = PPC_OP (opcode->opcode);
404
      if (op < table_op)
405
        break;
406
      if (op > table_op)
407
        continue;
408
 
409
      if ((insn & opcode->mask) != opcode->opcode
410
          || (opcode->flags & dialect) == 0
411
          || (opcode->deprecated & dialect_orig) != 0)
412
        continue;
413
 
414
      /* Make two passes over the operands.  First see if any of them
415
         have extraction functions, and, if they do, make sure the
416
         instruction is valid.  */
417
      invalid = 0;
418
      for (opindex = opcode->operands; *opindex != 0; opindex++)
419
        {
420
          operand = powerpc_operands + *opindex;
421
          if (operand->extract)
422
            (*operand->extract) (insn, dialect, &invalid);
423
        }
424
      if (invalid)
425
        continue;
426
 
427
      /* The instruction is valid.  */
428
      if (opcode->operands[0] != 0)
429
        (*info->fprintf_func) (info->stream, "%-7s ", opcode->name);
430
      else
431
        (*info->fprintf_func) (info->stream, "%s", opcode->name);
432
 
433
      /* Now extract and print the operands.  */
434
      need_comma = 0;
435
      need_paren = 0;
436
      skip_optional = -1;
437
      for (opindex = opcode->operands; *opindex != 0; opindex++)
438
        {
439
          long value;
440
 
441
          operand = powerpc_operands + *opindex;
442
 
443
          /* Operands that are marked FAKE are simply ignored.  We
444
             already made sure that the extract function considered
445
             the instruction to be valid.  */
446
          if ((operand->flags & PPC_OPERAND_FAKE) != 0)
447
            continue;
448
 
449
          /* If all of the optional operands have the value zero,
450
             then don't print any of them.  */
451
          if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0)
452
            {
453
              if (skip_optional < 0)
454
                skip_optional = skip_optional_operands (opindex, insn,
455
                                                        dialect);
456
              if (skip_optional)
457
                continue;
458
            }
459
 
460
          value = operand_value_powerpc (operand, insn, dialect);
461
 
462
          if (need_comma)
463
            {
464
              (*info->fprintf_func) (info->stream, ",");
465
              need_comma = 0;
466
            }
467
 
468
          /* Print the operand as directed by the flags.  */
469
          if ((operand->flags & PPC_OPERAND_GPR) != 0
470
              || ((operand->flags & PPC_OPERAND_GPR_0) != 0 && value != 0))
471
            (*info->fprintf_func) (info->stream, "r%ld", value);
472
          else if ((operand->flags & PPC_OPERAND_FPR) != 0)
473
            (*info->fprintf_func) (info->stream, "f%ld", value);
474
          else if ((operand->flags & PPC_OPERAND_VR) != 0)
475
            (*info->fprintf_func) (info->stream, "v%ld", value);
476
          else if ((operand->flags & PPC_OPERAND_VSR) != 0)
477
            (*info->fprintf_func) (info->stream, "vs%ld", value);
478
          else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0)
479
            (*info->print_address_func) (memaddr + value, info);
480
          else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0)
481
            (*info->print_address_func) ((bfd_vma) value & 0xffffffff, info);
482
          else if ((operand->flags & PPC_OPERAND_FSL) != 0)
483
            (*info->fprintf_func) (info->stream, "fsl%ld", value);
484
          else if ((operand->flags & PPC_OPERAND_FCR) != 0)
485
            (*info->fprintf_func) (info->stream, "fcr%ld", value);
486
          else if ((operand->flags & PPC_OPERAND_UDI) != 0)
487
            (*info->fprintf_func) (info->stream, "%ld", value);
488
          else if ((operand->flags & PPC_OPERAND_CR) != 0
489
                   && (dialect & PPC_OPCODE_PPC) != 0)
490
            {
491
              if (operand->bitm == 7)
492
                (*info->fprintf_func) (info->stream, "cr%ld", value);
493
              else
494
                {
495
                  static const char *cbnames[4] = { "lt", "gt", "eq", "so" };
496
                  int cr;
497
                  int cc;
498
 
499
                  cr = value >> 2;
500
                  if (cr != 0)
501
                    (*info->fprintf_func) (info->stream, "4*cr%d+", cr);
502
                  cc = value & 3;
503
                  (*info->fprintf_func) (info->stream, "%s", cbnames[cc]);
504
                }
505
            }
506
          else
507
            (*info->fprintf_func) (info->stream, "%ld", value);
508
 
509
          if (need_paren)
510
            {
511
              (*info->fprintf_func) (info->stream, ")");
512
              need_paren = 0;
513
            }
514
 
515
          if ((operand->flags & PPC_OPERAND_PARENS) == 0)
516
            need_comma = 1;
517
          else
518
            {
519
              (*info->fprintf_func) (info->stream, "(");
520
              need_paren = 1;
521
            }
522
        }
523
 
524
      /* We have found and printed an instruction; return.  */
525
      return 4;
526
    }
527
 
528
  if ((dialect & PPC_OPCODE_ANY) != 0)
529
    {
530
      dialect = ~PPC_OPCODE_ANY;
531
      goto again;
532
    }
533
 
534
  /* We could not find a match.  */
535
  (*info->fprintf_func) (info->stream, ".long 0x%lx", insn);
536
 
537
  return 4;
538
}
539
 
540
void
541
print_ppc_disassembler_options (FILE *stream)
542
{
543
  unsigned int i, col;
544
 
545
  fprintf (stream, _("\n\
546
The following PPC specific disassembler options are supported for use with\n\
547
the -M switch:\n"));
548
 
549
  for (col = 0, i = 0; i < sizeof (ppc_opts) / sizeof (ppc_opts[0]); i++)
550
    {
551
      col += fprintf (stream, " %s,", ppc_opts[i].opt);
552
      if (col > 66)
553
        {
554
          fprintf (stream, "\n");
555
          col = 0;
556
        }
557
    }
558
  fprintf (stream, " 32, 64\n");
559
}

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