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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-6.8/] [sim/] [igen/] [gen-engine.c] - Blame information for rev 819

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1 24 jeremybenn
/* The IGEN simulator generator for GDB, the GNU Debugger.
2
 
3
   Copyright 2002, 2007, 2008 Free Software Foundation, Inc.
4
 
5
   Contributed by Andrew Cagney.
6
 
7
   This file is part of GDB.
8
 
9
   This program is free software; you can redistribute it and/or modify
10
   it under the terms of the GNU General Public License as published by
11
   the Free Software Foundation; either version 3 of the License, or
12
   (at your option) any later version.
13
 
14
   This program is distributed in the hope that it will be useful,
15
   but WITHOUT ANY WARRANTY; without even the implied warranty of
16
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17
   GNU General Public License for more details.
18
 
19
   You should have received a copy of the GNU General Public License
20
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
21
 
22
#include "misc.h"
23
#include "lf.h"
24
#include "table.h"
25
#include "filter.h"
26
 
27
#include "igen.h"
28
 
29
#include "ld-insn.h"
30
#include "ld-decode.h"
31
 
32
#include "gen.h"
33
 
34
#include "gen-idecode.h"
35
#include "gen-engine.h"
36
#include "gen-icache.h"
37
#include "gen-semantics.h"
38
 
39
 
40
static void
41
print_engine_issue_prefix_hook (lf *file)
42
{
43
  lf_printf (file, "\n");
44
  lf_indent_suppress (file);
45
  lf_printf (file, "#if defined (ENGINE_ISSUE_PREFIX_HOOK)\n");
46
  lf_printf (file, "ENGINE_ISSUE_PREFIX_HOOK();\n");
47
  lf_indent_suppress (file);
48
  lf_printf (file, "#endif\n");
49
  lf_printf (file, "\n");
50
}
51
 
52
static void
53
print_engine_issue_postfix_hook (lf *file)
54
{
55
  lf_printf (file, "\n");
56
  lf_indent_suppress (file);
57
  lf_printf (file, "#if defined (ENGINE_ISSUE_POSTFIX_HOOK)\n");
58
  lf_printf (file, "ENGINE_ISSUE_POSTFIX_HOOK();\n");
59
  lf_indent_suppress (file);
60
  lf_printf (file, "#endif\n");
61
  lf_printf (file, "\n");
62
}
63
 
64
 
65
static void
66
print_run_body (lf *file, gen_entry *table)
67
{
68
  /* Output the function to execute real code:
69
 
70
     Unfortunatly, there are multiple cases to consider vis:
71
 
72
     <icache> X <smp>
73
 
74
     Consequently this function is written in multiple different ways */
75
 
76
  lf_printf (file, "{\n");
77
  lf_indent (file, +2);
78
  if (!options.gen.smp)
79
    {
80
      lf_printf (file, "%sinstruction_address cia;\n",
81
                 options.module.global.prefix.l);
82
    }
83
  lf_printf (file, "int current_cpu = next_cpu_nr;\n");
84
 
85
  if (options.gen.icache)
86
    {
87
      lf_printf (file, "/* flush the icache of a possible break insn */\n");
88
      lf_printf (file, "{\n");
89
      lf_printf (file, "  int cpu_nr;\n");
90
      lf_printf (file, "  for (cpu_nr = 0; cpu_nr < nr_cpus; cpu_nr++)\n");
91
      lf_printf (file, "    cpu_flush_icache (STATE_CPU (sd, cpu_nr));\n");
92
      lf_printf (file, "}\n");
93
    }
94
 
95
  if (!options.gen.smp)
96
    {
97
 
98
      lf_putstr (file, "\
99
/* CASE 1: NO SMP (with or with out instruction cache).\n\
100
\n\
101
In this case, we can take advantage of the fact that the current\n\
102
instruction address (CIA) does not need to be read from / written to\n\
103
the CPU object after the execution of an instruction.\n\
104
\n\
105
Instead, CIA is only saved when the main loop exits.  This occures\n\
106
when either sim_engine_halt or sim_engine_restart is called.  Both of\n\
107
these functions save the current instruction address before halting /\n\
108
restarting the simulator.\n\
109
\n\
110
As a variation, there may also be support for an instruction cracking\n\
111
cache. */\n\
112
\n\
113
");
114
 
115
      lf_putstr (file, "\n");
116
      lf_putstr (file, "/* prime the main loop */\n");
117
      lf_putstr (file, "SIM_ASSERT (current_cpu == 0);\n");
118
      lf_putstr (file, "SIM_ASSERT (nr_cpus == 1);\n");
119
      lf_putstr (file, "cia = CIA_GET (CPU);\n");
120
 
121
      lf_putstr (file, "\n");
122
      lf_putstr (file, "while (1)\n");
123
      lf_putstr (file, "  {\n");
124
      lf_indent (file, +4);
125
 
126
      lf_printf (file, "%sinstruction_address nia;\n",
127
                 options.module.global.prefix.l);
128
 
129
      lf_printf (file, "\n");
130
      if (!options.gen.icache)
131
        {
132
          lf_printf (file,
133
                     "%sinstruction_word instruction_0 = IMEM%d (cia);\n",
134
                     options.module.global.prefix.l, options.insn_bit_size);
135
          print_engine_issue_prefix_hook (file);
136
          print_idecode_body (file, table, "nia = ");
137
          print_engine_issue_postfix_hook (file);
138
        }
139
      else
140
        {
141
          lf_putstr (file, "idecode_cache *cache_entry =\n");
142
          lf_putstr (file, "  cpu_icache_entry (cpu, cia);\n");
143
          lf_putstr (file, "if (cache_entry->address == cia)\n");
144
          lf_putstr (file, "  {\n");
145
          lf_indent (file, -4);
146
          lf_putstr (file, "/* cache hit */\n");
147
          lf_putstr (file,
148
                     "idecode_semantic *const semantic = cache_entry->semantic;\n");
149
          lf_putstr (file, "cia = semantic (cpu, cache_entry, cia);\n");
150
          /* tail */
151
          lf_indent (file, -4);
152
          lf_putstr (file, "  }\n");
153
          lf_putstr (file, "else\n");
154
          lf_putstr (file, "  {\n");
155
          lf_indent (file, +4);
156
          lf_putstr (file, "/* cache miss */\n");
157
          if (!options.gen.semantic_icache)
158
            {
159
              lf_putstr (file, "idecode_semantic *semantic;\n");
160
            }
161
          lf_printf (file, "instruction_word instruction = IMEM%d (cia);\n",
162
                     options.insn_bit_size);
163
          lf_putstr (file, "if (WITH_MON != 0)\n");
164
          lf_putstr (file,
165
                     "  mon_event (mon_event_icache_miss, cpu, cia);\n");
166
          if (options.gen.semantic_icache)
167
            {
168
              lf_putstr (file, "{\n");
169
              lf_indent (file, +2);
170
              print_engine_issue_prefix_hook (file);
171
              print_idecode_body (file, table, "nia =");
172
              print_engine_issue_postfix_hook (file);
173
              lf_indent (file, -2);
174
              lf_putstr (file, "}\n");
175
            }
176
          else
177
            {
178
              print_engine_issue_prefix_hook (file);
179
              print_idecode_body (file, table, "semantic =");
180
              lf_putstr (file, "nia = semantic (cpu, cache_entry, cia);\n");
181
              print_engine_issue_postfix_hook (file);
182
            }
183
          lf_indent (file, -4);
184
          lf_putstr (file, "  }\n");
185
        }
186
 
187
      /* update the cpu if necessary */
188
      switch (options.gen.nia)
189
        {
190
        case nia_is_cia_plus_one:
191
          lf_printf (file, "\n");
192
          lf_printf (file, "/* Update the instruction address */\n");
193
          lf_printf (file, "cia = nia;\n");
194
          break;
195
        case nia_is_void:
196
        case nia_is_invalid:
197
          ERROR ("engine gen when NIA complex");
198
        }
199
 
200
      /* events */
201
      lf_putstr (file, "\n");
202
      lf_putstr (file, "/* process any events */\n");
203
      lf_putstr (file, "if (sim_events_tick (sd))\n");
204
      lf_putstr (file, "  {\n");
205
      lf_putstr (file, "    CIA_SET (CPU, cia);\n");
206
      lf_putstr (file, "    sim_events_process (sd);\n");
207
      lf_putstr (file, "    cia = CIA_GET (CPU);\n");
208
      lf_putstr (file, "  }\n");
209
 
210
      lf_indent (file, -4);
211
      lf_printf (file, "  }\n");
212
    }
213
 
214
  if (options.gen.smp)
215
    {
216
 
217
      lf_putstr (file, "\
218
/* CASE 2: SMP (With or without ICACHE)\n\
219
\n\
220
The complexity here comes from needing to correctly halt the simulator\n\
221
when it is aborted.  For instance, if cpu0 requests a restart then\n\
222
cpu1 will normally be the next cpu that is run.  Cpu0 being restarted\n\
223
after all the other CPU's and the event queue have been processed */\n\
224
\n\
225
");
226
 
227
      lf_putstr (file, "\n");
228
      lf_printf (file,
229
                 "/* have ensured that the event queue is NOT next */\n");
230
      lf_printf (file, "SIM_ASSERT (current_cpu >= 0);\n");
231
      lf_printf (file, "SIM_ASSERT (current_cpu <= nr_cpus - 1);\n");
232
      lf_printf (file, "SIM_ASSERT (nr_cpus <= MAX_NR_PROCESSORS);\n");
233
 
234
      lf_putstr (file, "\n");
235
      lf_putstr (file, "while (1)\n");
236
      lf_putstr (file, "  {\n");
237
      lf_indent (file, +4);
238
      lf_putstr (file, "sim_cpu *cpu = STATE_CPU (sd, current_cpu);\n");
239
      lf_putstr (file, "instruction_address cia = CIA_GET (cpu);\n");
240
      lf_putstr (file, "\n");
241
 
242
      if (!options.gen.icache)
243
        {
244
          lf_printf (file, "instruction_word instruction_0 = IMEM%d (cia);\n",
245
                     options.insn_bit_size);
246
          print_engine_issue_prefix_hook (file);
247
          print_idecode_body (file, table, "cia =");
248
          lf_putstr (file, "CIA_SET (cpu, cia);\n");
249
          print_engine_issue_postfix_hook (file);
250
        }
251
 
252
      if (options.gen.icache)
253
        {
254
          lf_putstr (file, "engine_cache *cache_entry =\n");
255
          lf_putstr (file, "  cpu_icache_entry(processor, cia);\n");
256
          lf_putstr (file, "\n");
257
          lf_putstr (file, "if (cache_entry->address == cia) {\n");
258
          {
259
            lf_indent (file, +2);
260
            lf_putstr (file, "\n");
261
            lf_putstr (file, "/* cache hit */\n");
262
            lf_putstr (file,
263
                       "engine_semantic *semantic = cache_entry->semantic;\n");
264
            lf_putstr (file,
265
                       "cia = semantic(processor, cache_entry, cia);\n");
266
            /* tail */
267
            lf_putstr (file, "cpu_set_program_counter(processor, cia);\n");
268
            lf_putstr (file, "\n");
269
            lf_indent (file, -2);
270
          }
271
          lf_putstr (file, "}\n");
272
          lf_putstr (file, "else {\n");
273
          {
274
            lf_indent (file, +2);
275
            lf_putstr (file, "\n");
276
            lf_putstr (file, "/* cache miss */\n");
277
            if (!options.gen.semantic_icache)
278
              {
279
                lf_putstr (file, "engine_semantic *semantic;\n");
280
              }
281
            lf_printf (file, "instruction_word instruction = IMEM%d (cia);\n",
282
                       options.insn_bit_size);
283
            lf_putstr (file, "if (WITH_MON != 0)\n");
284
            lf_putstr (file,
285
                       "  mon_event(mon_event_icache_miss, processors[current_cpu], cia);\n");
286
            if (options.gen.semantic_icache)
287
              {
288
                lf_putstr (file, "{\n");
289
                lf_indent (file, +2);
290
                print_engine_issue_prefix_hook (file);
291
                print_idecode_body (file, table, "cia =");
292
                print_engine_issue_postfix_hook (file);
293
                lf_indent (file, -2);
294
                lf_putstr (file, "}\n");
295
              }
296
            else
297
              {
298
                print_engine_issue_prefix_hook (file);
299
                print_idecode_body (file, table, "semantic = ");
300
                lf_putstr (file,
301
                           "cia = semantic(processor, cache_entry, cia);\n");
302
                print_engine_issue_postfix_hook (file);
303
              }
304
            /* tail */
305
            lf_putstr (file, "cpu_set_program_counter(processor, cia);\n");
306
            lf_putstr (file, "\n");
307
            lf_indent (file, -2);
308
          }
309
          lf_putstr (file, "}\n");
310
        }
311
 
312
      lf_putstr (file, "\n");
313
      lf_putstr (file, "current_cpu += 1;\n");
314
      lf_putstr (file, "if (current_cpu == nr_cpus)\n");
315
      lf_putstr (file, "  {\n");
316
      lf_putstr (file, "    if (sim_events_tick (sd))\n");
317
      lf_putstr (file, "      {\n");
318
      lf_putstr (file, "        sim_events_process (sd);\n");
319
      lf_putstr (file, "      }\n");
320
      lf_putstr (file, "    current_cpu = 0;\n");
321
      lf_putstr (file, "  }\n");
322
 
323
      /* tail */
324
      lf_indent (file, -4);
325
      lf_putstr (file, "  }\n");
326
    }
327
 
328
 
329
  lf_indent (file, -2);
330
  lf_putstr (file, "}\n");
331
}
332
 
333
 
334
/****************************************************************/
335
 
336
#if 0
337
static void
338
print_jump (lf *file, int is_tail)
339
{
340
  if (!options.gen.smp)
341
    {
342
      lf_putstr (file, "if (event_queue_tick (sd))\n");
343
      lf_putstr (file, "  {\n");
344
      lf_putstr (file, "    CPU_CIA (processor) = nia;\n");
345
      lf_putstr (file, "    sim_events_process (sd);\n");
346
      lf_putstr (file, "  }\n");
347
      lf_putstr (file, "}\n");
348
    }
349
 
350
  if (options.gen.smp)
351
    {
352
      if (is_tail)
353
        lf_putstr (file, "cpu_set_program_counter(processor, nia);\n");
354
      lf_putstr (file, "current_cpu += 1;\n");
355
      lf_putstr (file, "if (current_cpu >= nr_cpus)\n");
356
      lf_putstr (file, "  {\n");
357
      lf_putstr (file, "    if (sim_events_tick (sd))\n");
358
      lf_putstr (file, "      {\n");
359
      lf_putstr (file, "        sim_events_process (sd);\n");
360
      lf_putstr (file, "      }\n");
361
      lf_putstr (file, "    current_cpu = 0;\n");
362
      lf_putstr (file, "  }\n");
363
      lf_putstr (file, "processor = processors[current_cpu];\n");
364
      lf_putstr (file, "nia = cpu_get_program_counter(processor);\n");
365
    }
366
 
367
  if (options.gen.icache)
368
    {
369
      lf_putstr (file, "cache_entry = cpu_icache_entry(processor, nia);\n");
370
      lf_putstr (file, "if (cache_entry->address == nia) {\n");
371
      lf_putstr (file, "  /* cache hit */\n");
372
      lf_putstr (file, "  goto *cache_entry->semantic;\n");
373
      lf_putstr (file, "}\n");
374
      if (is_tail)
375
        {
376
          lf_putstr (file, "goto cache_miss;\n");
377
        }
378
    }
379
 
380
  if (!options.gen.icache && is_tail)
381
    {
382
      lf_printf (file, "goto engine;\n");
383
    }
384
 
385
}
386
#endif
387
 
388
 
389
#if 0
390
static void
391
print_jump_insn (lf *file,
392
                 insn_entry * instruction,
393
                 opcode_bits *expanded_bits,
394
                 opcode_field *opcodes, cache_entry *cache_rules)
395
{
396
  insn_opcodes opcode_path;
397
 
398
  memset (&opcode_path, 0, sizeof (opcode_path));
399
  opcode_path.opcode = opcodes;
400
 
401
  /* what we are for the moment */
402
  lf_printf (file, "\n");
403
  print_my_defines (file,
404
                    instruction->name,
405
                    instruction->format_name, expanded_bits);
406
 
407
  /* output the icache entry */
408
  if (options.gen.icache)
409
    {
410
      lf_printf (file, "\n");
411
      lf_indent (file, -1);
412
      print_function_name (file,
413
                           instruction->name,
414
                           instruction->format_name,
415
                           NULL, expanded_bits, function_name_prefix_icache);
416
      lf_printf (file, ":\n");
417
      lf_indent (file, +1);
418
      lf_printf (file, "{\n");
419
      lf_indent (file, +2);
420
      lf_putstr (file, "const unsigned_word cia = nia;\n");
421
      print_itrace (file, instruction, 1 /*putting-value-in-cache */ );
422
      print_idecode_validate (file, instruction, &opcode_path);
423
      lf_printf (file, "\n");
424
      lf_printf (file, "{\n");
425
      lf_indent (file, +2);
426
      print_icache_body (file, instruction, expanded_bits, cache_rules, 0,       /*use_defines */
427
                         put_values_in_icache);
428
      lf_printf (file, "cache_entry->address = nia;\n");
429
      lf_printf (file, "cache_entry->semantic = &&");
430
      print_function_name (file,
431
                           instruction->name,
432
                           instruction->format_name,
433
                           NULL,
434
                           expanded_bits, function_name_prefix_semantics);
435
      lf_printf (file, ";\n");
436
      if (options.gen.semantic_icache)
437
        {
438
          print_semantic_body (file,
439
                               instruction, expanded_bits, &opcode_path);
440
          print_jump (file, 1 /*is-tail */ );
441
        }
442
      else
443
        {
444
          lf_printf (file, "/* goto ");
445
          print_function_name (file,
446
                               instruction->name,
447
                               instruction->format_name,
448
                               NULL,
449
                               expanded_bits, function_name_prefix_semantics);
450
          lf_printf (file, "; */\n");
451
        }
452
      lf_indent (file, -2);
453
      lf_putstr (file, "}\n");
454
      lf_indent (file, -2);
455
      lf_printf (file, "}\n");
456
    }
457
 
458
  /* print the semantics */
459
  lf_printf (file, "\n");
460
  lf_indent (file, -1);
461
  print_function_name (file,
462
                       instruction->name,
463
                       instruction->format_name,
464
                       NULL, expanded_bits, function_name_prefix_semantics);
465
  lf_printf (file, ":\n");
466
  lf_indent (file, +1);
467
  lf_printf (file, "{\n");
468
  lf_indent (file, +2);
469
  lf_putstr (file, "const unsigned_word cia = nia;\n");
470
  print_icache_body (file,
471
                     instruction,
472
                     expanded_bits,
473
                     cache_rules,
474
                     (options.gen.direct_access
475
                      ? define_variables
476
                      : declare_variables),
477
                     (options.gen.icache
478
                      ? get_values_from_icache : do_not_use_icache));
479
  print_semantic_body (file, instruction, expanded_bits, &opcode_path);
480
  if (options.gen.direct_access)
481
    print_icache_body (file,
482
                       instruction,
483
                       expanded_bits,
484
                       cache_rules,
485
                       undef_variables,
486
                       (options.gen.icache
487
                        ? get_values_from_icache : do_not_use_icache));
488
  print_jump (file, 1 /*is tail */ );
489
  lf_indent (file, -2);
490
  lf_printf (file, "}\n");
491
}
492
#endif
493
 
494
 
495
#if 0
496
static void
497
print_jump_definition (lf *file, gen_entry *entry, int depth, void *data)
498
{
499
  cache_entry *cache_rules = (cache_entry *) data;
500
  if (entry->opcode_rule->with_duplicates)
501
    {
502
      ASSERT (entry->nr_insns == 1
503
              && entry->opcode == NULL
504
              && entry->parent != NULL && entry->parent->opcode != NULL);
505
      ASSERT (entry->nr_insns == 1
506
              && entry->opcode == NULL
507
              && entry->parent != NULL
508
              && entry->parent->opcode != NULL
509
              && entry->parent->opcode_rule != NULL);
510
      print_jump_insn (file,
511
                       entry->insns->insn,
512
                       entry->expanded_bits, entry->opcode, cache_rules);
513
    }
514
  else
515
    {
516
      print_jump_insn (file, entry->insns->insn, NULL, NULL, cache_rules);
517
    }
518
}
519
#endif
520
 
521
 
522
#if 0
523
static void
524
print_jump_internal_function (lf *file, function_entry * function, void *data)
525
{
526
  if (function->is_internal)
527
    {
528
      lf_printf (file, "\n");
529
      lf_print__line_ref (file, function->line);
530
      lf_indent (file, -1);
531
      print_function_name (file,
532
                           function->name,
533
                           NULL,
534
                           NULL,
535
                           NULL,
536
                           (options.gen.icache
537
                            ? function_name_prefix_icache
538
                            : function_name_prefix_semantics));
539
      lf_printf (file, ":\n");
540
      lf_indent (file, +1);
541
      lf_printf (file, "{\n");
542
      lf_indent (file, +2);
543
      lf_printf (file, "const unsigned_word cia = nia;\n");
544
      table_print_code (file, function->code);
545
      lf_print__internal_ref (file);
546
      lf_printf (file, "error(\"Internal function must longjump\\n\");\n");
547
      lf_indent (file, -2);
548
      lf_printf (file, "}\n");
549
    }
550
}
551
#endif
552
 
553
 
554
#if 0
555
static void
556
print_jump_body (lf *file,
557
                 gen_entry *entry, insn_table *isa, cache_entry *cache_rules)
558
{
559
  lf_printf (file, "{\n");
560
  lf_indent (file, +2);
561
  lf_putstr (file, "jmp_buf halt;\n");
562
  lf_putstr (file, "jmp_buf restart;\n");
563
  lf_putstr (file, "cpu *processor = NULL;\n");
564
  lf_putstr (file, "unsigned_word nia = -1;\n");
565
  lf_putstr (file, "instruction_word instruction = 0;\n");
566
  if (options.gen.icache)
567
    {
568
      lf_putstr (file, "engine_cache *cache_entry = NULL;\n");
569
    }
570
  if (options.gen.smp)
571
    {
572
      lf_putstr (file, "int current_cpu = -1;\n");
573
    }
574
 
575
  /* all the switches and tables - they know about jumping */
576
  print_idecode_lookups (file, entry, cache_rules);
577
 
578
  /* start the simulation up */
579
  if (options.gen.icache)
580
    {
581
      lf_putstr (file, "\n");
582
      lf_putstr (file, "{\n");
583
      lf_putstr (file, "  int cpu_nr;\n");
584
      lf_putstr (file, "  for (cpu_nr = 0; cpu_nr < nr_cpus; cpu_nr++)\n");
585
      lf_putstr (file, "    cpu_flush_icache(processors[cpu_nr]);\n");
586
      lf_putstr (file, "}\n");
587
    }
588
 
589
  lf_putstr (file, "\n");
590
  lf_putstr (file, "psim_set_halt_and_restart(system, &halt, &restart);\n");
591
 
592
  lf_putstr (file, "\n");
593
  lf_putstr (file, "if (setjmp(halt))\n");
594
  lf_putstr (file, "  return;\n");
595
 
596
  lf_putstr (file, "\n");
597
  lf_putstr (file, "setjmp(restart);\n");
598
 
599
  lf_putstr (file, "\n");
600
  if (!options.gen.smp)
601
    {
602
      lf_putstr (file, "processor = processors[0];\n");
603
      lf_putstr (file, "nia = cpu_get_program_counter(processor);\n");
604
    }
605
  else
606
    {
607
      lf_putstr (file, "current_cpu = psim_last_cpu(system);\n");
608
    }
609
 
610
  if (!options.gen.icache)
611
    {
612
      lf_printf (file, "\n");
613
      lf_indent (file, -1);
614
      lf_printf (file, "engine:\n");
615
      lf_indent (file, +1);
616
    }
617
 
618
  print_jump (file, 0 /*is_tail */ );
619
 
620
  if (options.gen.icache)
621
    {
622
      lf_indent (file, -1);
623
      lf_printf (file, "cache_miss:\n");
624
      lf_indent (file, +1);
625
    }
626
 
627
  print_engine_issue_prefix_hook (file);
628
  lf_putstr (file, "instruction\n");
629
  lf_putstr (file,
630
             "  = vm_instruction_map_read(cpu_instruction_map(processor),\n");
631
  lf_putstr (file, "                            processor, nia);\n");
632
  print_engine_issue_prefix_hook (file);
633
  print_idecode_body (file, entry, "/*IGORE*/");
634
  print_engine_issue_postfix_hook (file);
635
 
636
  /* print out a table of all the internals functions */
637
  function_entry_traverse (file, isa->functions,
638
                           print_jump_internal_function, NULL);
639
 
640
  /* print out a table of all the instructions */
641
  ERROR ("Use the list of semantic functions, not travere_tree");
642
  gen_entry_traverse_tree (file, entry, 1, NULL,        /* start */
643
                           print_jump_definition,       /* leaf */
644
                           NULL,        /* end */
645
                           cache_rules);
646
  lf_indent (file, -2);
647
  lf_printf (file, "}\n");
648
}
649
#endif
650
 
651
 
652
/****************************************************************/
653
 
654
 
655
void
656
print_engine_run_function_header (lf *file,
657
                                  char *processor,
658
                                  function_decl_type decl_type)
659
{
660
  int indent;
661
  lf_printf (file, "\n");
662
  switch (decl_type)
663
    {
664
    case is_function_declaration:
665
      lf_print__function_type (file, "void", "INLINE_ENGINE", "\n");
666
      break;
667
    case is_function_definition:
668
      lf_print__function_type (file, "void", "INLINE_ENGINE", " ");
669
      break;
670
    case is_function_variable:
671
      lf_printf (file, "void (*");
672
      break;
673
    }
674
  indent = print_function_name (file, "run", NULL,      /* format name */
675
                                processor, NULL,        /* expanded bits */
676
                                function_name_prefix_engine);
677
  switch (decl_type)
678
    {
679
    case is_function_definition:
680
      lf_putstr (file, "\n(");
681
      indent = 1;
682
      break;
683
    case is_function_declaration:
684
      indent += lf_printf (file, " (");
685
      break;
686
    case is_function_variable:
687
      lf_putstr (file, ")\n(");
688
      indent = 1;
689
      break;
690
    }
691
  lf_indent (file, +indent);
692
  lf_printf (file, "SIM_DESC sd,\n");
693
  lf_printf (file, "int next_cpu_nr,\n");
694
  lf_printf (file, "int nr_cpus,\n");
695
  lf_printf (file, "int siggnal)");
696
  lf_indent (file, -indent);
697
  switch (decl_type)
698
    {
699
    case is_function_definition:
700
      lf_putstr (file, "\n");
701
      break;
702
    case is_function_variable:
703
    case is_function_declaration:
704
      lf_putstr (file, ";\n");
705
      break;
706
    }
707
}
708
 
709
 
710
void
711
gen_engine_h (lf *file,
712
              gen_table *gen, insn_table *isa, cache_entry *cache_rules)
713
{
714
  gen_list *entry;
715
  for (entry = gen->tables; entry != NULL; entry = entry->next)
716
    {
717
      print_engine_run_function_header (file,
718
                                        (options.gen.multi_sim
719
                                         ? entry->model->name
720
                                         : NULL), is_function_declaration);
721
    }
722
}
723
 
724
 
725
void
726
gen_engine_c (lf *file,
727
              gen_table *gen, insn_table *isa, cache_entry *cache_rules)
728
{
729
  gen_list *entry;
730
  /* the intro */
731
  print_includes (file);
732
  print_include_inline (file, options.module.semantics);
733
  print_include (file, options.module.engine);
734
  lf_printf (file, "\n");
735
  lf_printf (file, "#include \"sim-assert.h\"\n");
736
  lf_printf (file, "\n");
737
  print_idecode_globals (file);
738
  lf_printf (file, "\n");
739
 
740
  for (entry = gen->tables; entry != NULL; entry = entry->next)
741
    {
742
      switch (options.gen.code)
743
        {
744
        case generate_calls:
745
          print_idecode_lookups (file, entry->table, cache_rules);
746
 
747
          /* output the main engine routine */
748
          print_engine_run_function_header (file,
749
                                            (options.gen.multi_sim
750
                                             ? entry->model->name
751
                                             : NULL), is_function_definition);
752
          print_run_body (file, entry->table);
753
          break;
754
 
755
        case generate_jumps:
756
          ERROR ("Jumps currently unimplemented");
757
#if 0
758
          print_engine_run_function_header (file,
759
                                            entry->processor,
760
                                            is_function_definition);
761
          print_jump_body (file, entry->table, isa, cache_rules);
762
#endif
763
          break;
764
        }
765
    }
766
}

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