Coverage Report

Created: 2026-03-10 08:46

next uncovered line (L), next uncovered region (R), next uncovered branch (B)
/src/binutils-gdb/opcodes/m32r-dis.c
Line
Count
Source
1
/* DO NOT EDIT!  -*- buffer-read-only: t -*- vi:set ro:  */
2
/* Disassembler interface for targets using CGEN. -*- C -*-
3
   CGEN: Cpu tools GENerator
4
5
   THIS FILE IS MACHINE GENERATED WITH CGEN.
6
   - the resultant file is machine generated, cgen-dis.in isn't
7
8
   Copyright (C) 1996-2026 Free Software Foundation, Inc.
9
10
   This file is part of libopcodes.
11
12
   This library is free software; you can redistribute it and/or modify
13
   it under the terms of the GNU General Public License as published by
14
   the Free Software Foundation; either version 3, or (at your option)
15
   any later version.
16
17
   It is distributed in the hope that it will be useful, but WITHOUT
18
   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
19
   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
20
   License for more details.
21
22
   You should have received a copy of the GNU General Public License
23
   along with this program; if not, write to the Free Software Foundation, Inc.,
24
   51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
25
26
/* ??? Eventually more and more of this stuff can go to cpu-independent files.
27
   Keep that in mind.  */
28
29
#include "sysdep.h"
30
#include <stdio.h>
31
#include "ansidecl.h"
32
#include "disassemble.h"
33
#include "bfd.h"
34
#include "symcat.h"
35
#include "libiberty.h"
36
#include "m32r-desc.h"
37
#include "m32r-opc.h"
38
#include "opintl.h"
39
40
/* Default text to print if an instruction isn't recognized.  */
41
39.8k
#define UNKNOWN_INSN_MSG _("*unknown*")
42
43
static void print_normal
44
  (CGEN_CPU_DESC, void *, long, unsigned int, bfd_vma, int);
45
static void print_address
46
  (CGEN_CPU_DESC, void *, bfd_vma, unsigned int, bfd_vma, int) ATTRIBUTE_UNUSED;
47
static void print_keyword
48
  (CGEN_CPU_DESC, void *, CGEN_KEYWORD *, long, unsigned int) ATTRIBUTE_UNUSED;
49
static void print_insn_normal
50
  (CGEN_CPU_DESC, void *, const CGEN_INSN *, CGEN_FIELDS *, bfd_vma, int);
51
static int print_insn
52
  (CGEN_CPU_DESC, bfd_vma,  disassemble_info *, bfd_byte *, unsigned);
53
static int default_print_insn
54
  (CGEN_CPU_DESC, bfd_vma, disassemble_info *) ATTRIBUTE_UNUSED;
55
static int read_insn
56
  (CGEN_CPU_DESC, bfd_vma, disassemble_info *, bfd_byte *, int, CGEN_EXTRACT_INFO *,
57
   unsigned long *);
58

59
/* -- disassembler routines inserted here.  */
60
61
/* -- dis.c */
62
63
/* Print signed operands with '#' prefixes.  */
64
65
static void
66
print_signed_with_hash_prefix (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
67
             void * dis_info,
68
             long value,
69
             unsigned int attrs ATTRIBUTE_UNUSED,
70
             bfd_vma pc ATTRIBUTE_UNUSED,
71
             int length ATTRIBUTE_UNUSED)
72
30.8k
{
73
30.8k
  disassemble_info *info = (disassemble_info *) dis_info;
74
75
30.8k
  (*info->fprintf_func) (info->stream, "#");
76
30.8k
  (*info->fprintf_func) (info->stream, "%ld", value);
77
30.8k
}
78
79
/* Print unsigned operands with '#' prefixes.  */
80
81
static void
82
print_unsigned_with_hash_prefix (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
83
         void * dis_info,
84
         long value,
85
         unsigned int attrs ATTRIBUTE_UNUSED,
86
         bfd_vma pc ATTRIBUTE_UNUSED,
87
         int length ATTRIBUTE_UNUSED)
88
12.7k
{
89
12.7k
  disassemble_info *info = (disassemble_info *) dis_info;
90
91
12.7k
  (*info->fprintf_func) (info->stream, "#");
92
12.7k
  (*info->fprintf_func) (info->stream, "0x%lx", value);
93
12.7k
}
94
95
/* Handle '#' prefixes as operands.  */
96
97
static void
98
print_hash (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
99
      void * dis_info,
100
      long value ATTRIBUTE_UNUSED,
101
      unsigned int attrs ATTRIBUTE_UNUSED,
102
      bfd_vma pc ATTRIBUTE_UNUSED,
103
      int length ATTRIBUTE_UNUSED)
104
1.19k
{
105
1.19k
  disassemble_info *info = (disassemble_info *) dis_info;
106
107
1.19k
  (*info->fprintf_func) (info->stream, "#");
108
1.19k
}
109
110
#undef  CGEN_PRINT_INSN
111
142k
#define CGEN_PRINT_INSN my_print_insn
112
113
static int
114
my_print_insn (CGEN_CPU_DESC cd,
115
         bfd_vma pc,
116
         disassemble_info *info)
117
142k
{
118
142k
  bfd_byte buffer[CGEN_MAX_INSN_SIZE];
119
142k
  bfd_byte *buf = buffer;
120
142k
  int status;
121
142k
  int buflen = (pc & 3) == 0 ? 4 : 2;
122
142k
  int big_p = CGEN_CPU_INSN_ENDIAN (cd) == CGEN_ENDIAN_BIG;
123
142k
  bfd_byte *x;
124
125
  /* Read the base part of the insn.  */
126
127
142k
  status = (*info->read_memory_func) (pc - ((!big_p && (pc & 3) != 0) ? 2 : 0),
128
142k
              buf, buflen, info);
129
142k
  if (status != 0)
130
137
    {
131
137
      (*info->memory_error_func) (status, pc, info);
132
137
      return -1;
133
137
    }
134
135
  /* 32 bit insn?  */
136
142k
  x = (big_p ? &buf[0] : &buf[3]);
137
142k
  if ((pc & 3) == 0 && (*x & 0x80) != 0)
138
46.1k
    return print_insn (cd, pc, info, buf, buflen);
139
140
  /* Print the first insn.  */
141
96.2k
  if ((pc & 3) == 0)
142
88.3k
    {
143
88.3k
      buf += (big_p ? 0 : 2);
144
88.3k
      if (print_insn (cd, pc, info, buf, 2) == 0)
145
8.81k
  (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
146
88.3k
      buf += (big_p ? 2 : -2);
147
88.3k
    }
148
149
96.2k
  x = (big_p ? &buf[0] : &buf[1]);
150
96.2k
  if (*x & 0x80)
151
27.2k
    {
152
      /* Parallel.  */
153
27.2k
      (*info->fprintf_func) (info->stream, " || ");
154
27.2k
      *x &= 0x7f;
155
27.2k
    }
156
68.9k
  else
157
68.9k
    (*info->fprintf_func) (info->stream, " -> ");
158
159
  /* The "& 3" is to pass a consistent address.
160
     Parallel insns arguably both begin on the word boundary.
161
     Also, branch insns are calculated relative to the word boundary.  */
162
96.2k
  if (print_insn (cd, pc & ~ (bfd_vma) 3, info, buf, 2) == 0)
163
9.95k
    (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
164
165
96.2k
  return (pc & 3) ? 2 : 4;
166
142k
}
167
168
/* -- */
169
170
void m32r_cgen_print_operand
171
  (CGEN_CPU_DESC, int, void *, CGEN_FIELDS *, void const *, bfd_vma, int);
172
173
/* Main entry point for printing operands.
174
   XINFO is a `void *' and not a `disassemble_info *' to not put a requirement
175
   of dis-asm.h on cgen.h.
176
177
   This function is basically just a big switch statement.  Earlier versions
178
   used tables to look up the function to use, but
179
   - if the table contains both assembler and disassembler functions then
180
     the disassembler contains much of the assembler and vice-versa,
181
   - there's a lot of inlining possibilities as things grow,
182
   - using a switch statement avoids the function call overhead.
183
184
   This function could be moved into `print_insn_normal', but keeping it
185
   separate makes clear the interface between `print_insn_normal' and each of
186
   the handlers.  */
187
188
void
189
m32r_cgen_print_operand (CGEN_CPU_DESC cd,
190
         int opindex,
191
         void * xinfo,
192
         CGEN_FIELDS *fields,
193
         void const *attrs ATTRIBUTE_UNUSED,
194
         bfd_vma pc,
195
         int length)
196
372k
{
197
372k
  disassemble_info *info = (disassemble_info *) xinfo;
198
199
372k
  switch (opindex)
200
372k
    {
201
3.76k
    case M32R_OPERAND_ACC :
202
3.76k
      print_keyword (cd, info, & m32r_cgen_opval_h_accums, fields->f_acc, 0);
203
3.76k
      break;
204
264
    case M32R_OPERAND_ACCD :
205
264
      print_keyword (cd, info, & m32r_cgen_opval_h_accums, fields->f_accd, 0);
206
264
      break;
207
882
    case M32R_OPERAND_ACCS :
208
882
      print_keyword (cd, info, & m32r_cgen_opval_h_accums, fields->f_accs, 0);
209
882
      break;
210
532
    case M32R_OPERAND_DCR :
211
532
      print_keyword (cd, info, & m32r_cgen_opval_cr_names, fields->f_r1, 0);
212
532
      break;
213
1.12k
    case M32R_OPERAND_DISP16 :
214
1.12k
      print_address (cd, info, fields->f_disp16, 0|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
215
1.12k
      break;
216
10.1k
    case M32R_OPERAND_DISP24 :
217
10.1k
      print_address (cd, info, fields->f_disp24, 0|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
218
10.1k
      break;
219
8.58k
    case M32R_OPERAND_DISP8 :
220
8.58k
      print_address (cd, info, fields->f_disp8, 0|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
221
8.58k
      break;
222
129k
    case M32R_OPERAND_DR :
223
129k
      print_keyword (cd, info, & m32r_cgen_opval_gr_names, fields->f_r1, 0);
224
129k
      break;
225
1.19k
    case M32R_OPERAND_HASH :
226
1.19k
      print_hash (cd, info, 0, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
227
1.19k
      break;
228
72
    case M32R_OPERAND_HI16 :
229
72
      print_normal (cd, info, fields->f_hi16, 0|(1<<CGEN_OPERAND_SIGN_OPT), pc, length);
230
72
      break;
231
86
    case M32R_OPERAND_IMM1 :
232
86
      print_unsigned_with_hash_prefix (cd, info, fields->f_imm1, 0, pc, length);
233
86
      break;
234
1.10k
    case M32R_OPERAND_SCR :
235
1.10k
      print_keyword (cd, info, & m32r_cgen_opval_cr_names, fields->f_r2, 0);
236
1.10k
      break;
237
2.15k
    case M32R_OPERAND_SIMM16 :
238
2.15k
      print_signed_with_hash_prefix (cd, info, fields->f_simm16, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
239
2.15k
      break;
240
28.7k
    case M32R_OPERAND_SIMM8 :
241
28.7k
      print_signed_with_hash_prefix (cd, info, fields->f_simm8, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
242
28.7k
      break;
243
5.48k
    case M32R_OPERAND_SLO16 :
244
5.48k
      print_normal (cd, info, fields->f_simm16, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
245
5.48k
      break;
246
92.7k
    case M32R_OPERAND_SR :
247
92.7k
      print_keyword (cd, info, & m32r_cgen_opval_gr_names, fields->f_r2, 0);
248
92.7k
      break;
249
33.2k
    case M32R_OPERAND_SRC1 :
250
33.2k
      print_keyword (cd, info, & m32r_cgen_opval_gr_names, fields->f_r1, 0);
251
33.2k
      break;
252
34.3k
    case M32R_OPERAND_SRC2 :
253
34.3k
      print_keyword (cd, info, & m32r_cgen_opval_gr_names, fields->f_r2, 0);
254
34.3k
      break;
255
421
    case M32R_OPERAND_UIMM16 :
256
421
      print_unsigned_with_hash_prefix (cd, info, fields->f_uimm16, 0, pc, length);
257
421
      break;
258
4.75k
    case M32R_OPERAND_UIMM24 :
259
4.75k
      print_address (cd, info, fields->f_uimm24, 0|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_ABS_ADDR), pc, length);
260
4.75k
      break;
261
3.29k
    case M32R_OPERAND_UIMM3 :
262
3.29k
      print_unsigned_with_hash_prefix (cd, info, fields->f_uimm3, 0, pc, length);
263
3.29k
      break;
264
166
    case M32R_OPERAND_UIMM4 :
265
166
      print_unsigned_with_hash_prefix (cd, info, fields->f_uimm4, 0, pc, length);
266
166
      break;
267
5.77k
    case M32R_OPERAND_UIMM5 :
268
5.77k
      print_unsigned_with_hash_prefix (cd, info, fields->f_uimm5, 0, pc, length);
269
5.77k
      break;
270
3.03k
    case M32R_OPERAND_UIMM8 :
271
3.03k
      print_unsigned_with_hash_prefix (cd, info, fields->f_uimm8, 0, pc, length);
272
3.03k
      break;
273
516
    case M32R_OPERAND_ULO16 :
274
516
      print_normal (cd, info, fields->f_uimm16, 0, pc, length);
275
516
      break;
276
277
0
    default :
278
      /* xgettext:c-format */
279
0
      opcodes_error_handler
280
0
  (_("internal error: unrecognized field %d while printing insn"),
281
0
   opindex);
282
0
      abort ();
283
372k
  }
284
372k
}
285
286
cgen_print_fn * const m32r_cgen_print_handlers[] =
287
{
288
  print_insn_normal,
289
};
290
291
292
void
293
m32r_cgen_init_dis (CGEN_CPU_DESC cd)
294
6
{
295
6
  m32r_cgen_init_opcode_table (cd);
296
6
  m32r_cgen_init_ibld_table (cd);
297
6
  cd->print_handlers = & m32r_cgen_print_handlers[0];
298
6
  cd->print_operand = m32r_cgen_print_operand;
299
6
}
300
301

302
/* Default print handler.  */
303
304
static void
305
print_normal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
306
        void *dis_info,
307
        long value,
308
        unsigned int attrs,
309
        bfd_vma pc ATTRIBUTE_UNUSED,
310
        int length ATTRIBUTE_UNUSED)
311
6.07k
{
312
6.07k
  disassemble_info *info = (disassemble_info *) dis_info;
313
314
  /* Print the operand as directed by the attributes.  */
315
6.07k
  if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
316
0
    ; /* nothing to do */
317
6.07k
  else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
318
5.48k
    (*info->fprintf_func) (info->stream, "%ld", value);
319
588
  else
320
588
    (*info->fprintf_func) (info->stream, "0x%lx", value);
321
6.07k
}
322
323
/* Default address handler.  */
324
325
static void
326
print_address (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
327
         void *dis_info,
328
         bfd_vma value,
329
         unsigned int attrs,
330
         bfd_vma pc ATTRIBUTE_UNUSED,
331
         int length ATTRIBUTE_UNUSED)
332
24.6k
{
333
24.6k
  disassemble_info *info = (disassemble_info *) dis_info;
334
335
  /* Print the operand as directed by the attributes.  */
336
24.6k
  if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
337
0
    ; /* Nothing to do.  */
338
24.6k
  else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR))
339
19.9k
    (*info->print_address_func) (value, info);
340
4.75k
  else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
341
4.75k
    (*info->print_address_func) (value, info);
342
0
  else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
343
0
    (*info->fprintf_func) (info->stream, "%ld", (long) value);
344
0
  else
345
0
    (*info->fprintf_func) (info->stream, "0x%lx", (long) value);
346
24.6k
}
347
348
/* Keyword print handler.  */
349
350
static void
351
print_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
352
         void *dis_info,
353
         CGEN_KEYWORD *keyword_table,
354
         long value,
355
         unsigned int attrs ATTRIBUTE_UNUSED)
356
296k
{
357
296k
  disassemble_info *info = (disassemble_info *) dis_info;
358
296k
  const CGEN_KEYWORD_ENTRY *ke;
359
360
296k
  ke = cgen_keyword_lookup_value (keyword_table, value);
361
296k
  if (ke != NULL)
362
296k
    (*info->fprintf_func) (info->stream, "%s", ke->name);
363
662
  else
364
662
    (*info->fprintf_func) (info->stream, "???");
365
296k
}
366

367
/* Default insn printer.
368
369
   DIS_INFO is defined as `void *' so the disassembler needn't know anything
370
   about disassemble_info.  */
371
372
static void
373
print_insn_normal (CGEN_CPU_DESC cd,
374
       void *dis_info,
375
       const CGEN_INSN *insn,
376
       CGEN_FIELDS *fields,
377
       bfd_vma pc,
378
       int length)
379
190k
{
380
190k
  const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
381
190k
  disassemble_info *info = (disassemble_info *) dis_info;
382
190k
  const CGEN_SYNTAX_CHAR_TYPE *syn;
383
384
190k
  CGEN_INIT_PRINT (cd);
385
386
1.15M
  for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
387
967k
    {
388
967k
      if (CGEN_SYNTAX_MNEMONIC_P (*syn))
389
190k
  {
390
190k
    (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
391
190k
    continue;
392
190k
  }
393
776k
      if (CGEN_SYNTAX_CHAR_P (*syn))
394
404k
  {
395
404k
    (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
396
404k
    continue;
397
404k
  }
398
399
      /* We have an operand.  */
400
372k
      m32r_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
401
372k
         fields, CGEN_INSN_ATTRS (insn), pc, length);
402
372k
    }
403
190k
}
404

405
/* Subroutine of print_insn. Reads an insn into the given buffers and updates
406
   the extract info.
407
   Returns 0 if all is well, non-zero otherwise.  */
408
409
static int
410
read_insn (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
411
     bfd_vma pc,
412
     disassemble_info *info,
413
     bfd_byte *buf,
414
     int buflen,
415
     CGEN_EXTRACT_INFO *ex_info,
416
     unsigned long *insn_value)
417
0
{
418
0
  int status = (*info->read_memory_func) (pc, buf, buflen, info);
419
420
0
  if (status != 0)
421
0
    {
422
0
      (*info->memory_error_func) (status, pc, info);
423
0
      return -1;
424
0
    }
425
426
0
  ex_info->dis_info = info;
427
0
  ex_info->valid = (1 << buflen) - 1;
428
0
  ex_info->insn_bytes = buf;
429
430
0
  *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG);
431
0
  return 0;
432
0
}
433
434
/* Utility to print an insn.
435
   BUF is the base part of the insn, target byte order, BUFLEN bytes long.
436
   The result is the size of the insn in bytes or zero for an unknown insn
437
   or -1 if an error occurs fetching data (memory_error_func will have
438
   been called).  */
439
440
static int
441
print_insn (CGEN_CPU_DESC cd,
442
      bfd_vma pc,
443
      disassemble_info *info,
444
      bfd_byte *buf,
445
      unsigned int buflen)
446
230k
{
447
230k
  CGEN_INSN_INT insn_value;
448
230k
  const CGEN_INSN_LIST *insn_list;
449
230k
  CGEN_EXTRACT_INFO ex_info;
450
230k
  int basesize;
451
452
  /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */
453
230k
  basesize = cd->base_insn_bitsize < buflen * 8 ?
454
230k
                                     cd->base_insn_bitsize : buflen * 8;
455
230k
  insn_value = cgen_get_insn_value (cd, buf, basesize, cd->insn_endian);
456
457
458
  /* Fill in ex_info fields like read_insn would.  Don't actually call
459
     read_insn, since the incoming buffer is already read (and possibly
460
     modified a la m32r).  */
461
230k
  ex_info.valid = (1 << buflen) - 1;
462
230k
  ex_info.dis_info = info;
463
230k
  ex_info.insn_bytes = buf;
464
465
  /* The instructions are stored in hash lists.
466
     Pick the first one and keep trying until we find the right one.  */
467
468
230k
  insn_list = CGEN_DIS_LOOKUP_INSN (cd, (char *) buf, insn_value);
469
483k
  while (insn_list != NULL)
470
443k
    {
471
443k
      const CGEN_INSN *insn = insn_list->insn;
472
443k
      CGEN_FIELDS fields;
473
443k
      int length;
474
443k
      unsigned long insn_value_cropped;
475
476
#ifdef CGEN_VALIDATE_INSN_SUPPORTED
477
      /* Not needed as insn shouldn't be in hash lists if not supported.  */
478
      /* Supported by this cpu?  */
479
      if (! m32r_cgen_insn_supported (cd, insn))
480
        {
481
          insn_list = CGEN_DIS_NEXT_INSN (insn_list);
482
    continue;
483
        }
484
#endif
485
486
      /* Basic bit mask must be correct.  */
487
      /* ??? May wish to allow target to defer this check until the extract
488
   handler.  */
489
490
      /* Base size may exceed this instruction's size.  Extract the
491
         relevant part from the buffer. */
492
443k
      if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen &&
493
0
    (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
494
0
  insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn),
495
0
             info->endian == BFD_ENDIAN_BIG);
496
443k
      else
497
443k
  insn_value_cropped = insn_value;
498
499
443k
      if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn))
500
443k
    == CGEN_INSN_BASE_VALUE (insn))
501
190k
  {
502
    /* Printing is handled in two passes.  The first pass parses the
503
       machine insn and extracts the fields.  The second pass prints
504
       them.  */
505
506
    /* Make sure the entire insn is loaded into insn_value, if it
507
       can fit.  */
508
190k
    if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) &&
509
0
        (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
510
0
      {
511
0
        unsigned long full_insn_value;
512
0
        int rc = read_insn (cd, pc, info, buf,
513
0
          CGEN_INSN_BITSIZE (insn) / 8,
514
0
          & ex_info, & full_insn_value);
515
0
        if (rc != 0)
516
0
    return rc;
517
0
        length = CGEN_EXTRACT_FN (cd, insn)
518
0
    (cd, insn, &ex_info, full_insn_value, &fields, pc);
519
0
      }
520
190k
    else
521
190k
      length = CGEN_EXTRACT_FN (cd, insn)
522
190k
        (cd, insn, &ex_info, insn_value_cropped, &fields, pc);
523
524
    /* Length < 0 -> error.  */
525
190k
    if (length < 0)
526
0
      return length;
527
190k
    if (length > 0)
528
190k
      {
529
190k
        CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
530
        /* Length is in bits, result is in bytes.  */
531
190k
        return length / 8;
532
190k
      }
533
190k
  }
534
535
253k
      insn_list = CGEN_DIS_NEXT_INSN (insn_list);
536
253k
    }
537
538
39.8k
  return 0;
539
230k
}
540
541
/* Default value for CGEN_PRINT_INSN.
542
   The result is the size of the insn in bytes or zero for an unknown insn
543
   or -1 if an error occured fetching bytes.  */
544
545
#ifndef CGEN_PRINT_INSN
546
#define CGEN_PRINT_INSN default_print_insn
547
#endif
548
549
static int
550
default_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
551
0
{
552
0
  bfd_byte buf[CGEN_MAX_INSN_SIZE];
553
0
  int buflen;
554
0
  int status;
555
0
556
0
  /* Attempt to read the base part of the insn.  */
557
0
  buflen = cd->base_insn_bitsize / 8;
558
0
  status = (*info->read_memory_func) (pc, buf, buflen, info);
559
0
560
0
  /* Try again with the minimum part, if min < base.  */
561
0
  if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
562
0
    {
563
0
      buflen = cd->min_insn_bitsize / 8;
564
0
      status = (*info->read_memory_func) (pc, buf, buflen, info);
565
0
    }
566
0
567
0
  if (status != 0)
568
0
    {
569
0
      (*info->memory_error_func) (status, pc, info);
570
0
      return -1;
571
0
    }
572
0
573
0
  return print_insn (cd, pc, info, buf, buflen);
574
0
}
575
576
/* Main entry point.
577
   Print one instruction from PC on INFO->STREAM.
578
   Return the size of the instruction (in bytes).  */
579
580
typedef struct cpu_desc_list
581
{
582
  struct cpu_desc_list *next;
583
  CGEN_BITSET *isa;
584
  int mach;
585
  int endian;
586
  int insn_endian;
587
  CGEN_CPU_DESC cd;
588
} cpu_desc_list;
589
590
int
591
print_insn_m32r (bfd_vma pc, disassemble_info *info)
592
142k
{
593
142k
  static cpu_desc_list *cd_list = 0;
594
142k
  cpu_desc_list *cl = 0;
595
142k
  static CGEN_CPU_DESC cd = 0;
596
142k
  static CGEN_BITSET *prev_isa;
597
142k
  static int prev_mach;
598
142k
  static int prev_endian;
599
142k
  static int prev_insn_endian;
600
142k
  int length;
601
142k
  CGEN_BITSET *isa;
602
142k
  int mach;
603
142k
  int endian = (info->endian == BFD_ENDIAN_BIG
604
142k
    ? CGEN_ENDIAN_BIG
605
142k
    : CGEN_ENDIAN_LITTLE);
606
142k
  int insn_endian = (info->endian_code == BFD_ENDIAN_BIG
607
142k
                     ? CGEN_ENDIAN_BIG
608
142k
                     : CGEN_ENDIAN_LITTLE);
609
142k
  enum bfd_architecture arch;
610
611
  /* ??? gdb will set mach but leave the architecture as "unknown" */
612
142k
#ifndef CGEN_BFD_ARCH
613
142k
#define CGEN_BFD_ARCH bfd_arch_m32r
614
142k
#endif
615
142k
  arch = info->arch;
616
142k
  if (arch == bfd_arch_unknown)
617
0
    arch = CGEN_BFD_ARCH;
618
619
  /* There's no standard way to compute the machine or isa number
620
     so we leave it to the target.  */
621
#ifdef CGEN_COMPUTE_MACH
622
  mach = CGEN_COMPUTE_MACH (info);
623
#else
624
142k
  mach = info->mach;
625
142k
#endif
626
627
#ifdef CGEN_COMPUTE_ISA
628
  {
629
    static CGEN_BITSET *permanent_isa;
630
631
    if (!permanent_isa)
632
      permanent_isa = cgen_bitset_create (MAX_ISAS);
633
    isa = permanent_isa;
634
    cgen_bitset_clear (isa);
635
    cgen_bitset_add (isa, CGEN_COMPUTE_ISA (info));
636
  }
637
#else
638
142k
  isa = info->private_data;
639
142k
#endif
640
641
  /* If we've switched cpu's, try to find a handle we've used before */
642
142k
  if (cd
643
142k
      && (cgen_bitset_compare (isa, prev_isa) != 0
644
142k
    || mach != prev_mach
645
28.0k
    || endian != prev_endian))
646
114k
    {
647
114k
      cd = 0;
648
338k
      for (cl = cd_list; cl; cl = cl->next)
649
338k
  {
650
338k
    if (cgen_bitset_compare (cl->isa, isa) == 0 &&
651
338k
        cl->mach == mach &&
652
114k
        cl->endian == endian)
653
114k
      {
654
114k
        cd = cl->cd;
655
114k
        prev_isa = cd->isas;
656
114k
        break;
657
114k
      }
658
338k
  }
659
114k
    }
660
661
  /* If we haven't initialized yet, initialize the opcode table.  */
662
142k
  if (! cd)
663
6
    {
664
6
      const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
665
6
      const char *mach_name;
666
667
6
      if (!arch_type)
668
0
  abort ();
669
6
      mach_name = arch_type->printable_name;
670
671
6
      prev_isa = cgen_bitset_copy (isa);
672
6
      prev_mach = mach;
673
6
      prev_endian = endian;
674
6
      prev_insn_endian = insn_endian;
675
6
      cd = m32r_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
676
6
         CGEN_CPU_OPEN_BFDMACH, mach_name,
677
6
         CGEN_CPU_OPEN_ENDIAN, prev_endian,
678
6
                                 CGEN_CPU_OPEN_INSN_ENDIAN, prev_insn_endian,
679
6
         CGEN_CPU_OPEN_END);
680
6
      if (!cd)
681
0
  abort ();
682
683
      /* Save this away for future reference.  */
684
6
      cl = xmalloc (sizeof (struct cpu_desc_list));
685
6
      cl->cd = cd;
686
6
      cl->isa = prev_isa;
687
6
      cl->mach = mach;
688
6
      cl->endian = endian;
689
6
      cl->next = cd_list;
690
6
      cd_list = cl;
691
692
6
      m32r_cgen_init_dis (cd);
693
6
    }
694
695
  /* We try to have as much common code as possible.
696
     But at this point some targets need to take over.  */
697
  /* ??? Some targets may need a hook elsewhere.  Try to avoid this,
698
     but if not possible try to move this hook elsewhere rather than
699
     have two hooks.  */
700
142k
  length = CGEN_PRINT_INSN (cd, pc, info);
701
142k
  if (length > 0)
702
121k
    return length;
703
21.1k
  if (length < 0)
704
137
    return -1;
705
706
21.0k
  (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
707
21.0k
  return cd->default_insn_bitsize / 8;
708
21.1k
}