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[/] [or1k/] [branches/] [oc/] [gdb-5.0/] [sim/] [ppc/] [igen.c] - Blame information for rev 1771

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1 106 markom
/*  This file is part of the program psim.
2
 
3
    Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au>
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-decode.h"
33
#include "ld-cache.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
        break;
111
      case ' ':
112
        nr += lf_putchr(file, '_');
113
        break;
114
      default:
115
        nr += lf_putchr(file, *pos);
116
        break;
117
      }
118
    }
119
  }
120
 
121
  /* the suffix */
122
  if (generate_expanded_instructions)
123
    nr += print_insn_bits(file, expanded_bits);
124
 
125
  return nr;
126
}
127
 
128
 
129
void
130
print_my_defines(lf *file,
131
                 insn_bits *expanded_bits,
132
                 table_entry *file_entry)
133
{
134
  /* #define MY_INDEX xxxxx */
135
  lf_indent_suppress(file);
136
  lf_printf(file, "#undef MY_INDEX\n");
137
  lf_indent_suppress(file);
138
  lf_printf(file, "#define MY_INDEX ");
139
  print_function_name(file,
140
                      file_entry->fields[insn_name],
141
                      NULL,
142
                      function_name_prefix_itable);
143
  lf_printf(file, "\n");
144
  /* #define MY_PREFIX xxxxxx */
145
  lf_indent_suppress(file);
146
  lf_printf(file, "#undef MY_PREFIX\n");
147
  lf_indent_suppress(file);
148
  lf_printf(file, "#define MY_PREFIX ");
149
  print_function_name(file,
150
                      file_entry->fields[insn_name],
151
                      expanded_bits,
152
                      function_name_prefix_none);
153
  lf_printf(file, "\n");
154
}
155
 
156
 
157
void
158
print_itrace(lf *file,
159
             table_entry *file_entry,
160
             int idecode)
161
{
162
  lf_print__external_reference(file, file_entry->line_nr, file_entry->file_name);
163
  lf_printf(file, "ITRACE(trace_%s, (\"%s %s\\n\"));\n",
164
            (idecode ? "idecode" : "semantics"),
165
            (idecode ? "idecode" : "semantics"),
166
            file_entry->fields[insn_name]);
167
  lf_print__internal_reference(file);
168
}
169
 
170
 
171
/****************************************************************/
172
 
173
 
174
static void
175
gen_semantics_h(insn_table *table,
176
                lf *file,
177
                igen_code generate)
178
{
179
  lf_printf(file, "typedef %s idecode_semantic\n(%s);\n",
180
            SEMANTIC_FUNCTION_TYPE,
181
            SEMANTIC_FUNCTION_FORMAL);
182
  lf_printf(file, "\n");
183
  if ((code & generate_calls)) {
184
    lf_printf(file, "extern int option_mpc860c0;\n");
185
    lf_printf(file, "#define PAGE_SIZE 0x1000\n");
186
    lf_printf(file, "\n");
187
    lf_printf(file, "EXTERN_SEMANTICS(void)\n");
188
    lf_printf(file, "semantic_init(device* root);\n");
189
    lf_printf(file, "\n");
190
    if (generate_expanded_instructions)
191
      insn_table_traverse_tree(table,
192
                               file, NULL,
193
                               1,
194
                               NULL, /* start */
195
                               print_semantic_declaration, /* leaf */
196
                               NULL, /* end */
197
                               NULL); /* padding */
198
    else
199
      insn_table_traverse_insn(table,
200
                               file, NULL,
201
                               print_semantic_declaration);
202
 
203
  }
204
  else {
205
    lf_print__this_file_is_empty(file);
206
  }
207
}
208
 
209
 
210
static void
211
gen_semantics_c(insn_table *table,
212
                cache_table *cache_rules,
213
                lf *file,
214
                igen_code generate)
215
{
216
  if ((code & generate_calls)) {
217
    lf_printf(file, "\n");
218
    lf_printf(file, "#include \"cpu.h\"\n");
219
    lf_printf(file, "#include \"idecode.h\"\n");
220
    lf_printf(file, "#include \"semantics.h\"\n");
221
    lf_printf(file, "#include \"support.h\"\n");
222
    lf_printf(file, "\n");
223
    lf_printf(file, "int option_mpc860c0 = 0;\n");
224
    lf_printf(file, "\n");
225
    lf_printf(file, "EXTERN_SEMANTICS(void)\n");
226
    lf_printf(file, "semantic_init(device* root)\n");
227
    lf_printf(file, "{\n");
228
    lf_printf(file, "  option_mpc860c0 = 0;\n");
229
    lf_printf(file, "  if (tree_find_property(root, \"/options/mpc860c0\"))\n");
230
    lf_printf(file, "    option_mpc860c0 = tree_find_integer_property(root, \"/options/mpc860c0\");\n");
231
    lf_printf(file, "    option_mpc860c0 *= 4;   /* convert word count to byte count */\n");
232
    lf_printf(file, "}\n");
233
    lf_printf(file, "\n");
234
    if (generate_expanded_instructions)
235
      insn_table_traverse_tree(table,
236
                               file, cache_rules,
237
                               1,
238
                               NULL, /* start */
239
                               print_semantic_definition, /* leaf */
240
                               NULL, /* end */
241
                               NULL); /* padding */
242
    else
243
      insn_table_traverse_insn(table,
244
                               file, cache_rules,
245
                               print_semantic_definition);
246
 
247
  }
248
  else {
249
    lf_print__this_file_is_empty(file);
250
  }
251
}
252
 
253
 
254
/****************************************************************/
255
 
256
 
257
static void
258
gen_icache_h(insn_table *table,
259
             lf *file,
260
             igen_code generate)
261
{
262
  lf_printf(file, "typedef %s idecode_icache\n(%s);\n",
263
            ICACHE_FUNCTION_TYPE,
264
            ICACHE_FUNCTION_FORMAL);
265
  lf_printf(file, "\n");
266
  if ((code & generate_calls)
267
      && (code & generate_with_icache)) {
268
    insn_table_traverse_function(table,
269
                                 file, NULL,
270
                                 print_icache_internal_function_declaration);
271
    if (generate_expanded_instructions)
272
      insn_table_traverse_tree(table,
273
                               file, NULL,
274
                               1,
275
                               NULL, /* start */
276
                               print_icache_declaration, /* leaf */
277
                               NULL, /* end */
278
                               NULL); /* padding */
279
    else
280
      insn_table_traverse_insn(table,
281
                               file, NULL,
282
                               print_icache_declaration);
283
 
284
  }
285
  else {
286
    lf_print__this_file_is_empty(file);
287
  }
288
}
289
 
290
static void
291
gen_icache_c(insn_table *table,
292
             cache_table *cache_rules,
293
             lf *file,
294
             igen_code generate)
295
{
296
  /* output `internal' invalid/floating-point unavailable functions
297
     where needed */
298
  if ((code & generate_calls)
299
      && (code & generate_with_icache)) {
300
    lf_printf(file, "\n");
301
    lf_printf(file, "#include \"cpu.h\"\n");
302
    lf_printf(file, "#include \"idecode.h\"\n");
303
    lf_printf(file, "#include \"semantics.h\"\n");
304
    lf_printf(file, "#include \"icache.h\"\n");
305
    lf_printf(file, "#include \"support.h\"\n");
306
    lf_printf(file, "\n");
307
    insn_table_traverse_function(table,
308
                                 file, NULL,
309
                                 print_icache_internal_function_definition);
310
    lf_printf(file, "\n");
311
    if (generate_expanded_instructions)
312
      insn_table_traverse_tree(table,
313
                               file, cache_rules,
314
                               1,
315
                               NULL, /* start */
316
                               print_icache_definition, /* leaf */
317
                               NULL, /* end */
318
                               NULL); /* padding */
319
    else
320
      insn_table_traverse_insn(table,
321
                               file, cache_rules,
322
                               print_icache_definition);
323
 
324
  }
325
  else {
326
    lf_print__this_file_is_empty(file);
327
  }
328
}
329
 
330
 
331
/****************************************************************/
332
 
333
 
334
int
335
main(int argc,
336
     char **argv,
337
     char **envp)
338
{
339
  cache_table *cache_rules = NULL;
340
  lf_file_references file_references = lf_include_references;
341
  decode_table *decode_rules = NULL;
342
  filter *filters = NULL;
343
  insn_table *instructions = NULL;
344
  char *real_file_name = NULL;
345
  int is_header = 0;
346
  int ch;
347
 
348
  if (argc == 1) {
349
    printf("Usage:\n");
350
    printf("  igen <config-opts> ... <input-opts>... <output-opts>...\n");
351
    printf("Config options:\n");
352
    printf("  -F <filter-out-flag>  eg -F 64 to skip 64bit instructions\n");
353
    printf("  -E                    Expand (duplicate) semantic functions\n");
354
    printf("  -I <icache-size>      Generate cracking cache version\n");
355
    printf("  -C                    Include semantics in cache functions\n");
356
    printf("  -S                    Include insn (instruction) in icache\n");
357
    printf("  -R                    Use defines to reference cache vars\n");
358
    printf("  -L                    Supress line numbering in output files\n");
359
    printf("  -B <bit-size>         Set the number of bits in an instruction\n");
360
    printf("  -H <high-bit>         Set the nr of the high (msb bit)\n");
361
    printf("  -N <nr-cpus>          Specify the max number of cpus the simulation will support\n");
362
    printf("  -J                    Use jumps instead of function calls\n");
363
    printf("  -T <mechanism>        Override the mechanism used to decode an instruction\n");
364
    printf("                        using <mechanism> instead of what was specified in the\n");
365
    printf("                        decode-rules input file\n");
366
    printf("\n");
367
    printf("Input options (ucase version also dumps loaded table):\n");
368
    printf("  -o <decode-rules>\n");
369
    printf("  -k <cache-rules>\n");
370
    printf("  -i <instruction-table>\n");
371
    printf("\n");
372
    printf("Output options:\n");
373
    printf("  -n <real-name>        Specify the real name of for the next output file\n");
374
    printf("  -h                    Generate header file\n");
375
    printf("  -c <output-file>      output icache\n");
376
    printf("  -d <output-file>      output idecode\n");
377
    printf("  -m <output-file>      output model\n");
378
    printf("  -s <output-file>      output schematic\n");
379
    printf("  -t <output-file>      output itable\n");
380
    printf("  -f <output-file>      output support functions\n");
381
  }
382
 
383
  while ((ch = getopt(argc, argv,
384
                      "F:EI:RSLJT:CB:H:N:o:k:i:n:hc:d:m:s:t:f:"))
385
         != -1) {
386
    fprintf(stderr, "\t-%c %s\n", ch, (optarg ? optarg : ""));
387
    switch(ch) {
388
    case 'C':
389
      code |= generate_with_icache;
390
      code |= generate_with_semantic_icache;
391
      break;
392
    case 'S':
393
      code |= generate_with_icache;
394
      code |= generate_with_insn_in_icache;
395
      break;
396
    case 'L':
397
      file_references = lf_omit_references;
398
      break;
399
    case 'E':
400
      generate_expanded_instructions = 1;
401
      break;
402
    case 'I':
403
      icache_size = a2i(optarg);
404
      code |= generate_with_icache;
405
      break;
406
    case 'N':
407
      generate_smp = a2i(optarg);
408
      break;
409
    case 'R':
410
      code |= generate_with_direct_access;
411
      break;
412
    case 'B':
413
      insn_bit_size = a2i(optarg);
414
      ASSERT(insn_bit_size > 0 && insn_bit_size <= max_insn_bit_size
415
             && (hi_bit_nr == insn_bit_size-1 || hi_bit_nr == 0));
416
      break;
417
    case 'H':
418
      hi_bit_nr = a2i(optarg);
419
      ASSERT(hi_bit_nr == insn_bit_size-1 || hi_bit_nr == 0);
420
      break;
421
    case 'F':
422
      filters = new_filter(optarg, filters);
423
      break;
424
    case 'J':
425
      code &= ~generate_calls;
426
      code |= generate_jumps;
427
      break;
428
    case 'T':
429
      force_decode_gen_type(optarg);
430
      break;
431
    case 'i':
432
      if (decode_rules == NULL || cache_rules == NULL) {
433
        fprintf(stderr, "Must specify decode and cache tables\n");
434
        exit (1);
435
      }
436
      instructions = load_insn_table(optarg, decode_rules, filters);
437
      fprintf(stderr, "\texpanding ...\n");
438
      insn_table_expand_insns(instructions);
439
      break;
440
    case 'o':
441
      decode_rules = load_decode_table(optarg, hi_bit_nr);
442
      break;
443
    case 'k':
444
      cache_rules = load_cache_table(optarg, hi_bit_nr);
445
      break;
446
    case 'n':
447
      real_file_name = strdup(optarg);
448
      break;
449
    case 'h':
450
      is_header = 1;
451
      break;
452
    case 's':
453
    case 'd':
454
    case 'm':
455
    case 't':
456
    case 'f':
457
    case 'c':
458
      {
459
        lf *file = lf_open(optarg, real_file_name, file_references,
460
                           (is_header ? lf_is_h : lf_is_c),
461
                           argv[0]);
462
        lf_print__file_start(file);
463
        ASSERT(instructions != NULL);
464
        switch (ch) {
465
        case 's':
466
          if(is_header)
467
            gen_semantics_h(instructions, file, code);
468
          else
469
            gen_semantics_c(instructions, cache_rules, file, code);
470
          break;
471
        case 'd':
472
          if (is_header)
473
            gen_idecode_h(file, instructions, cache_rules);
474
          else
475
            gen_idecode_c(file, instructions, cache_rules);
476
          break;
477
        case 'm':
478
          if (is_header)
479
            gen_model_h(instructions, file);
480
          else
481
            gen_model_c(instructions, file);
482
          break;
483
        case 't':
484
          if (is_header)
485
            gen_itable_h(instructions, file);
486
          else
487
            gen_itable_c(instructions, file);
488
          break;
489
        case 'f':
490
          if (is_header)
491
            gen_support_h(instructions, file);
492
          else
493
            gen_support_c(instructions, file);
494
          break;
495
        case 'c':
496
          if (is_header)
497
            gen_icache_h(instructions, file, code);
498
          else
499
            gen_icache_c(instructions, cache_rules, file, code);
500
          break;
501
        }
502
        lf_print__file_finish(file);
503
        lf_close(file);
504
        is_header = 0;
505
      }
506
      real_file_name = NULL;
507
      break;
508
    default:
509
      error("unknown option\n");
510
    }
511
  }
512
  return 0;
513
}

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