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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [sim/] [ppc/] [igen.c] - Blame information for rev 157

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Line No. Rev Author Line
1 24 jeremybenn
/*  This file is part of the program psim.
2
 
3
    Copyright 1994, 1995, 1996, 1997, 2003 Andrew Cagney
4
 
5
    This program is free software; you can redistribute it and/or modify
6
    it under the terms of the GNU General Public License as published by
7
    the Free Software Foundation; either version 2 of the License, or
8
    (at your option) any later version.
9
 
10
    This program is distributed in the hope that it will be useful,
11
    but WITHOUT ANY WARRANTY; without even the implied warranty of
12
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13
    GNU General Public License for more details.
14
 
15
    You should have received a copy of the GNU General Public License
16
    along with this program; if not, write to the Free Software
17
    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18
 
19
    */
20
 
21
 
22
 
23
#include <getopt.h>
24
 
25
#include "misc.h"
26
#include "lf.h"
27
#include "table.h"
28
#include "config.h"
29
 
30
#include "filter.h"
31
 
32
#include "ld-cache.h"
33
#include "ld-decode.h"
34
#include "ld-insn.h"
35
 
36
#include "igen.h"
37
 
38
#include "gen-model.h"
39
#include "gen-icache.h"
40
#include "gen-itable.h"
41
#include "gen-idecode.h"
42
#include "gen-semantics.h"
43
#include "gen-support.h"
44
 
45
int hi_bit_nr;
46
int insn_bit_size = max_insn_bit_size;
47
 
48
igen_code code = generate_calls;
49
 
50
int generate_expanded_instructions;
51
int icache_size = 1024;
52
int generate_smp;
53
 
54
/****************************************************************/
55
 
56
static int
57
print_insn_bits(lf *file, insn_bits *bits)
58
{
59
  int nr = 0;
60
  if (bits == NULL)
61
    return nr;
62
  nr += print_insn_bits(file, bits->last);
63
  nr += lf_putchr(file, '_');
64
  nr += lf_putstr(file, bits->field->val_string);
65
  if (bits->opcode->is_boolean && bits->value == 0)
66
    nr += lf_putint(file, bits->opcode->boolean_constant);
67
  else if (!bits->opcode->is_boolean) {
68
    if (bits->opcode->last < bits->field->last)
69
      nr += lf_putint(file, bits->value << (bits->field->last - bits->opcode->last));
70
    else
71
      nr += lf_putint(file, bits->value);
72
  }
73
  return nr;
74
}
75
 
76
extern int
77
print_function_name(lf *file,
78
                    const char *basename,
79
                    insn_bits *expanded_bits,
80
                    lf_function_name_prefixes prefix)
81
{
82
  int nr = 0;
83
  /* the prefix */
84
  switch (prefix) {
85
  case function_name_prefix_semantics:
86
    nr += lf_putstr(file, "semantic_");
87
    break;
88
  case function_name_prefix_idecode:
89
    nr += lf_printf(file, "idecode_");
90
    break;
91
  case function_name_prefix_itable:
92
    nr += lf_putstr(file, "itable_");
93
    break;
94
  case function_name_prefix_icache:
95
    nr += lf_putstr(file, "icache_");
96
    break;
97
  default:
98
    break;
99
  }
100
 
101
  /* the function name */
102
  {
103
    const char *pos;
104
    for (pos = basename;
105
         *pos != '\0';
106
         pos++) {
107
      switch (*pos) {
108
      case '/':
109
      case '-':
110
      case '(':
111
      case ')':
112
        break;
113
      case ' ':
114
        nr += lf_putchr(file, '_');
115
        break;
116
      default:
117
        nr += lf_putchr(file, *pos);
118
        break;
119
      }
120
    }
121
  }
122
 
123
  /* the suffix */
124
  if (generate_expanded_instructions)
125
    nr += print_insn_bits(file, expanded_bits);
126
 
127
  return nr;
128
}
129
 
130
 
131
void
132
print_my_defines(lf *file,
133
                 insn_bits *expanded_bits,
134
                 table_entry *file_entry)
135
{
136
  /* #define MY_INDEX xxxxx */
137
  lf_indent_suppress(file);
138
  lf_printf(file, "#undef MY_INDEX\n");
139
  lf_indent_suppress(file);
140
  lf_printf(file, "#define MY_INDEX ");
141
  print_function_name(file,
142
                      file_entry->fields[insn_name],
143
                      NULL,
144
                      function_name_prefix_itable);
145
  lf_printf(file, "\n");
146
  /* #define MY_PREFIX xxxxxx */
147
  lf_indent_suppress(file);
148
  lf_printf(file, "#undef MY_PREFIX\n");
149
  lf_indent_suppress(file);
150
  lf_printf(file, "#define MY_PREFIX ");
151
  print_function_name(file,
152
                      file_entry->fields[insn_name],
153
                      expanded_bits,
154
                      function_name_prefix_none);
155
  lf_printf(file, "\n");
156
}
157
 
158
 
159
void
160
print_itrace(lf *file,
161
             table_entry *file_entry,
162
             int idecode)
163
{
164
  lf_print__external_reference(file, file_entry->line_nr, file_entry->file_name);
165
  lf_printf(file, "ITRACE(trace_%s, (\"%s %s\\n\"));\n",
166
            (idecode ? "idecode" : "semantics"),
167
            (idecode ? "idecode" : "semantics"),
168
            file_entry->fields[insn_name]);
169
  lf_print__internal_reference(file);
170
}
171
 
172
 
173
/****************************************************************/
174
 
175
 
176
static void
177
gen_semantics_h(insn_table *table,
178
                lf *file,
179
                igen_code generate)
180
{
181
  lf_printf(file, "typedef %s idecode_semantic\n(%s);\n",
182
            SEMANTIC_FUNCTION_TYPE,
183
            SEMANTIC_FUNCTION_FORMAL);
184
  lf_printf(file, "\n");
185
  if ((code & generate_calls)) {
186
    lf_printf(file, "extern int option_mpc860c0;\n");
187
    lf_printf(file, "#define PAGE_SIZE 0x1000\n");
188
    lf_printf(file, "\n");
189
    lf_printf(file, "PSIM_EXTERN_SEMANTICS(void)\n");
190
    lf_printf(file, "semantic_init(device* root);\n");
191
    lf_printf(file, "\n");
192
    if (generate_expanded_instructions)
193
      insn_table_traverse_tree(table,
194
                               file, NULL,
195
                               1,
196
                               NULL, /* start */
197
                               print_semantic_declaration, /* leaf */
198
                               NULL, /* end */
199
                               NULL); /* padding */
200
    else
201
      insn_table_traverse_insn(table,
202
                               file, NULL,
203
                               print_semantic_declaration);
204
 
205
  }
206
  else {
207
    lf_print__this_file_is_empty(file);
208
  }
209
}
210
 
211
 
212
static void
213
gen_semantics_c(insn_table *table,
214
                cache_table *cache_rules,
215
                lf *file,
216
                igen_code generate)
217
{
218
  if ((code & generate_calls)) {
219
    lf_printf(file, "\n");
220
    lf_printf(file, "#include \"cpu.h\"\n");
221
    lf_printf(file, "#include \"idecode.h\"\n");
222
    lf_printf(file, "#include \"semantics.h\"\n");
223
    lf_printf(file, "#ifdef HAVE_COMMON_FPU\n");
224
    lf_printf(file, "#include \"sim-inline.h\"\n");
225
    lf_printf(file, "#include \"sim-fpu.h\"\n");
226
    lf_printf(file, "#endif\n");
227
    lf_printf(file, "#include \"support.h\"\n");
228
    lf_printf(file, "\n");
229
    lf_printf(file, "int option_mpc860c0 = 0;\n");
230
    lf_printf(file, "\n");
231
    lf_printf(file, "PSIM_EXTERN_SEMANTICS(void)\n");
232
    lf_printf(file, "semantic_init(device* root)\n");
233
    lf_printf(file, "{\n");
234
    lf_printf(file, "  option_mpc860c0 = 0;\n");
235
    lf_printf(file, "  if (tree_find_property(root, \"/options/mpc860c0\"))\n");
236
    lf_printf(file, "    option_mpc860c0 = tree_find_integer_property(root, \"/options/mpc860c0\");\n");
237
    lf_printf(file, "    option_mpc860c0 *= 4;   /* convert word count to byte count */\n");
238
    lf_printf(file, "}\n");
239
    lf_printf(file, "\n");
240
    if (generate_expanded_instructions)
241
      insn_table_traverse_tree(table,
242
                               file, cache_rules,
243
                               1,
244
                               NULL, /* start */
245
                               print_semantic_definition, /* leaf */
246
                               NULL, /* end */
247
                               NULL); /* padding */
248
    else
249
      insn_table_traverse_insn(table,
250
                               file, cache_rules,
251
                               print_semantic_definition);
252
 
253
  }
254
  else {
255
    lf_print__this_file_is_empty(file);
256
  }
257
}
258
 
259
 
260
/****************************************************************/
261
 
262
 
263
static void
264
gen_icache_h(insn_table *table,
265
             lf *file,
266
             igen_code generate)
267
{
268
  lf_printf(file, "typedef %s idecode_icache\n(%s);\n",
269
            ICACHE_FUNCTION_TYPE,
270
            ICACHE_FUNCTION_FORMAL);
271
  lf_printf(file, "\n");
272
  if ((code & generate_calls)
273
      && (code & generate_with_icache)) {
274
    insn_table_traverse_function(table,
275
                                 file, NULL,
276
                                 print_icache_internal_function_declaration);
277
    if (generate_expanded_instructions)
278
      insn_table_traverse_tree(table,
279
                               file, NULL,
280
                               1,
281
                               NULL, /* start */
282
                               print_icache_declaration, /* leaf */
283
                               NULL, /* end */
284
                               NULL); /* padding */
285
    else
286
      insn_table_traverse_insn(table,
287
                               file, NULL,
288
                               print_icache_declaration);
289
 
290
  }
291
  else {
292
    lf_print__this_file_is_empty(file);
293
  }
294
}
295
 
296
static void
297
gen_icache_c(insn_table *table,
298
             cache_table *cache_rules,
299
             lf *file,
300
             igen_code generate)
301
{
302
  /* output `internal' invalid/floating-point unavailable functions
303
     where needed */
304
  if ((code & generate_calls)
305
      && (code & generate_with_icache)) {
306
    lf_printf(file, "\n");
307
    lf_printf(file, "#include \"cpu.h\"\n");
308
    lf_printf(file, "#include \"idecode.h\"\n");
309
    lf_printf(file, "#include \"semantics.h\"\n");
310
    lf_printf(file, "#include \"icache.h\"\n");
311
    lf_printf(file, "#ifdef HAVE_COMMON_FPU\n");
312
    lf_printf(file, "#include \"sim-inline.h\"\n");
313
    lf_printf(file, "#include \"sim-fpu.h\"\n");
314
    lf_printf(file, "#endif\n");
315
    lf_printf(file, "#include \"support.h\"\n");
316
    lf_printf(file, "\n");
317
    insn_table_traverse_function(table,
318
                                 file, NULL,
319
                                 print_icache_internal_function_definition);
320
    lf_printf(file, "\n");
321
    if (generate_expanded_instructions)
322
      insn_table_traverse_tree(table,
323
                               file, cache_rules,
324
                               1,
325
                               NULL, /* start */
326
                               print_icache_definition, /* leaf */
327
                               NULL, /* end */
328
                               NULL); /* padding */
329
    else
330
      insn_table_traverse_insn(table,
331
                               file, cache_rules,
332
                               print_icache_definition);
333
 
334
  }
335
  else {
336
    lf_print__this_file_is_empty(file);
337
  }
338
}
339
 
340
 
341
/****************************************************************/
342
 
343
 
344
int
345
main(int argc,
346
     char **argv,
347
     char **envp)
348
{
349
  cache_table *cache_rules = NULL;
350
  lf_file_references file_references = lf_include_references;
351
  decode_table *decode_rules = NULL;
352
  filter *filters = NULL;
353
  insn_table *instructions = NULL;
354
  table_include *includes = NULL;
355
  char *real_file_name = NULL;
356
  int is_header = 0;
357
  int ch;
358
 
359
  if (argc == 1) {
360
    printf("Usage:\n");
361
    printf("  igen <config-opts> ... <input-opts>... <output-opts>...\n");
362
    printf("Config options:\n");
363
    printf("  -F <filter-out-flag>  eg -F 64 to skip 64bit instructions\n");
364
    printf("  -E                    Expand (duplicate) semantic functions\n");
365
    printf("  -I <icache-size>      Generate cracking cache version\n");
366
    printf("  -C                    Include semantics in cache functions\n");
367
    printf("  -S                    Include insn (instruction) in icache\n");
368
    printf("  -R                    Use defines to reference cache vars\n");
369
    printf("  -L                    Supress line numbering in output files\n");
370
    printf("  -B <bit-size>         Set the number of bits in an instruction\n");
371
    printf("  -H <high-bit>         Set the nr of the high (msb bit)\n");
372
    printf("  -N <nr-cpus>          Specify the max number of cpus the simulation will support\n");
373
    printf("  -J                    Use jumps instead of function calls\n");
374
    printf("  -T <mechanism>        Override the mechanism used to decode an instruction\n");
375
    printf("                        using <mechanism> instead of what was specified in the\n");
376
    printf("                        decode-rules input file\n");
377
    printf("\n");
378
    printf("Input options (ucase version also dumps loaded table):\n");
379
    printf("  -o <decode-rules>\n");
380
    printf("  -k <cache-rules>\n");
381
    printf("  -i <instruction-table>\n");
382
    printf("\n");
383
    printf("Output options:\n");
384
    printf("  -n <real-name>        Specify the real name of for the next output file\n");
385
    printf("  -h                    Generate header file\n");
386
    printf("  -c <output-file>      output icache\n");
387
    printf("  -d <output-file>      output idecode\n");
388
    printf("  -m <output-file>      output model\n");
389
    printf("  -s <output-file>      output schematic\n");
390
    printf("  -t <output-file>      output itable\n");
391
    printf("  -f <output-file>      output support functions\n");
392
  }
393
 
394
  while ((ch = getopt(argc, argv,
395
                      "F:EI:RSLJT:CB:H:N:o:k:i:n:hc:d:m:s:t:f:"))
396
         != -1) {
397
    fprintf(stderr, "\t-%c %s\n", ch, (optarg ? optarg : ""));
398
    switch(ch) {
399
    case 'C':
400
      code |= generate_with_icache;
401
      code |= generate_with_semantic_icache;
402
      break;
403
    case 'S':
404
      code |= generate_with_icache;
405
      code |= generate_with_insn_in_icache;
406
      break;
407
    case 'L':
408
      file_references = lf_omit_references;
409
      break;
410
    case 'E':
411
      generate_expanded_instructions = 1;
412
      break;
413
    case 'G':
414
      {
415
        int enable_p;
416
        char *argp;
417
        if (strncmp (optarg, "no-", strlen ("no-")) == 0)
418
          {
419
            argp = optarg + strlen ("no-");
420
            enable_p = 0;
421
          }
422
        else if (strncmp (optarg, "!", strlen ("!")) == 0)
423
          {
424
            argp = optarg + strlen ("no-");
425
            enable_p = 0;
426
          }
427
        else
428
          {
429
            argp = optarg;
430
            enable_p = 1;
431
          }
432
        if (strncmp (argp, "gen-icache", strlen ("gen-icache")) == 0)
433
          {
434
            switch (argp[strlen ("gen-icache")])
435
              {
436
              case '=':
437
                icache_size = atoi (argp + strlen ("gen-icache") + 1);
438
                code |= generate_with_icache;
439
                break;
440
              case '\0':
441
                code |= generate_with_icache;
442
                break;
443
              default:
444
                error (NULL, "Expecting -Ggen-icache or -Ggen-icache=<N>\n");
445
              }
446
          }
447
        }
448
    case 'I':
449
      {
450
        table_include **dir = &includes;
451
        while ((*dir) != NULL)
452
          dir = &(*dir)->next;
453
        (*dir) = ZALLOC (table_include);
454
        (*dir)->dir = strdup (optarg);
455
      }
456
      break;
457
    case 'N':
458
      generate_smp = a2i(optarg);
459
      break;
460
    case 'R':
461
      code |= generate_with_direct_access;
462
      break;
463
    case 'B':
464
      insn_bit_size = a2i(optarg);
465
      ASSERT(insn_bit_size > 0 && insn_bit_size <= max_insn_bit_size
466
             && (hi_bit_nr == insn_bit_size-1 || hi_bit_nr == 0));
467
      break;
468
    case 'H':
469
      hi_bit_nr = a2i(optarg);
470
      ASSERT(hi_bit_nr == insn_bit_size-1 || hi_bit_nr == 0);
471
      break;
472
    case 'F':
473
      filters = new_filter(optarg, filters);
474
      break;
475
    case 'J':
476
      code &= ~generate_calls;
477
      code |= generate_jumps;
478
      break;
479
    case 'T':
480
      force_decode_gen_type(optarg);
481
      break;
482
    case 'i':
483
      if (decode_rules == NULL) {
484
        fprintf(stderr, "Must specify decode tables\n");
485
        exit (1);
486
      }
487
      instructions = load_insn_table(optarg, decode_rules, filters, includes,
488
                                     &cache_rules);
489
      fprintf(stderr, "\texpanding ...\n");
490
      insn_table_expand_insns(instructions);
491
      break;
492
    case 'o':
493
      decode_rules = load_decode_table(optarg, hi_bit_nr);
494
      break;
495
    case 'k':
496
      cache_rules = load_cache_table(optarg, hi_bit_nr);
497
      break;
498
    case 'n':
499
      real_file_name = strdup(optarg);
500
      break;
501
    case 'h':
502
      is_header = 1;
503
      break;
504
    case 's':
505
    case 'd':
506
    case 'm':
507
    case 't':
508
    case 'f':
509
    case 'c':
510
      {
511
        lf *file = lf_open(optarg, real_file_name, file_references,
512
                           (is_header ? lf_is_h : lf_is_c),
513
                           argv[0]);
514
        lf_print__file_start(file);
515
        ASSERT(instructions != NULL);
516
        switch (ch) {
517
        case 's':
518
          if(is_header)
519
            gen_semantics_h(instructions, file, code);
520
          else
521
            gen_semantics_c(instructions, cache_rules, file, code);
522
          break;
523
        case 'd':
524
          if (is_header)
525
            gen_idecode_h(file, instructions, cache_rules);
526
          else
527
            gen_idecode_c(file, instructions, cache_rules);
528
          break;
529
        case 'm':
530
          if (is_header)
531
            gen_model_h(instructions, file);
532
          else
533
            gen_model_c(instructions, file);
534
          break;
535
        case 't':
536
          if (is_header)
537
            gen_itable_h(instructions, file);
538
          else
539
            gen_itable_c(instructions, file);
540
          break;
541
        case 'f':
542
          if (is_header)
543
            gen_support_h(instructions, file);
544
          else
545
            gen_support_c(instructions, file);
546
          break;
547
        case 'c':
548
          if (is_header)
549
            gen_icache_h(instructions, file, code);
550
          else
551
            gen_icache_c(instructions, cache_rules, file, code);
552
          break;
553
        }
554
        lf_print__file_finish(file);
555
        lf_close(file);
556
        is_header = 0;
557
      }
558
      real_file_name = NULL;
559
      break;
560
    default:
561
      error("unknown option\n");
562
    }
563
  }
564
  return 0;
565
}

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