Commit | Line | Data |
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c906108c SS |
1 | /* This file is part of the program psim. |
2 | ||
3 | Copyright (C) 1994-1998, 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 | #include "misc.h" | |
22 | #include "lf.h" | |
23 | #include "table.h" | |
24 | #include "filter.h" | |
25 | ||
26 | #include "igen.h" | |
27 | ||
28 | #include "ld-insn.h" | |
29 | #include "ld-decode.h" | |
30 | ||
31 | #include "gen.h" | |
32 | ||
33 | #include "gen-idecode.h" | |
34 | #include "gen-engine.h" | |
35 | #include "gen-icache.h" | |
36 | #include "gen-semantics.h" | |
37 | ||
38 | ||
39 | static void | |
40 | print_engine_issue_prefix_hook (lf *file) | |
41 | { | |
42 | lf_printf (file, "\n"); | |
43 | lf_indent_suppress (file); | |
44 | lf_printf (file, "#if defined (%sENGINE_ISSUE_PREFIX_HOOK)\n", | |
45 | options.module.global.prefix.l); | |
46 | lf_printf (file, "%sENGINE_ISSUE_PREFIX_HOOK();\n", | |
47 | options.module.global.prefix.l); | |
48 | lf_indent_suppress (file); | |
49 | lf_printf (file, "#endif\n"); | |
50 | lf_printf (file, "\n"); | |
51 | } | |
52 | ||
53 | static void | |
54 | print_engine_issue_postfix_hook (lf *file) | |
55 | { | |
56 | lf_printf (file, "\n"); | |
57 | lf_indent_suppress (file); | |
58 | lf_printf (file, "#if defined (%sENGINE_ISSUE_POSTFIX_HOOK)\n", | |
59 | options.module.global.prefix.l); | |
60 | lf_printf (file, "%sENGINE_ISSUE_POSTFIX_HOOK();\n", | |
61 | options.module.global.prefix.l); | |
62 | lf_indent_suppress (file); | |
63 | lf_printf (file, "#endif\n"); | |
64 | lf_printf (file, "\n"); | |
65 | } | |
66 | ||
67 | ||
68 | static void | |
69 | print_run_body (lf *file, | |
70 | gen_entry *table) | |
71 | { | |
72 | /* Output the function to execute real code: | |
73 | ||
74 | Unfortunatly, there are multiple cases to consider vis: | |
75 | ||
76 | <icache> X <smp> | |
77 | ||
78 | Consequently this function is written in multiple different ways */ | |
79 | ||
80 | lf_printf (file, "{\n"); | |
81 | lf_indent (file, +2); | |
82 | if (!options.gen.smp) | |
83 | { | |
84 | lf_printf (file, "%sinstruction_address cia;\n", options.module.global.prefix.l); | |
85 | } | |
86 | lf_printf (file, "int current_cpu = next_cpu_nr;\n"); | |
87 | ||
88 | if (options.gen.icache) | |
89 | { | |
90 | lf_printf (file, "/* flush the icache of a possible break insn */\n"); | |
91 | lf_printf (file, "{\n"); | |
92 | lf_printf (file, " int cpu_nr;\n"); | |
93 | lf_printf (file, " for (cpu_nr = 0; cpu_nr < nr_cpus; cpu_nr++)\n"); | |
94 | lf_printf (file, " cpu_flush_icache (STATE_CPU (sd, cpu_nr));\n"); | |
95 | lf_printf (file, "}\n"); | |
96 | } | |
97 | ||
98 | if (!options.gen.smp) | |
99 | { | |
100 | ||
101 | lf_putstr (file, " | |
102 | /* CASE 1: NO SMP (with or with out instruction cache). | |
103 | ||
104 | In this case, we can take advantage of the fact that the current | |
105 | instruction address (CIA) does not need to be read from / written to | |
106 | the CPU object after the execution of an instruction. | |
107 | ||
108 | Instead, CIA is only saved when the main loop exits. This occures | |
109 | when either sim_engine_halt or sim_engine_restart is called. Both of | |
110 | these functions save the current instruction address before halting / | |
111 | restarting the simulator. | |
112 | ||
113 | As a variation, there may also be support for an instruction cracking | |
114 | cache. */ | |
115 | ||
116 | "); | |
117 | ||
118 | lf_putstr (file, "\n"); | |
119 | lf_putstr (file, "/* prime the main loop */\n"); | |
120 | lf_putstr (file, "SIM_ASSERT (current_cpu == 0);\n"); | |
121 | lf_putstr (file, "SIM_ASSERT (nr_cpus == 1);\n"); | |
122 | lf_putstr (file, "cia = CIA_GET (CPU);\n"); | |
123 | ||
124 | lf_putstr (file, "\n"); | |
125 | lf_putstr (file, "while (1)\n"); | |
126 | lf_putstr (file, " {\n"); | |
127 | lf_indent (file, +4); | |
128 | ||
129 | lf_printf (file, "%sinstruction_address nia;\n", | |
130 | options.module.global.prefix.l); | |
131 | ||
132 | lf_printf (file, "\n"); | |
133 | if (!options.gen.icache) | |
134 | { | |
135 | lf_printf (file, "%sinstruction_word instruction_0 = IMEM%d (cia);\n", | |
136 | options.module.global.prefix.l, | |
137 | options.insn_bit_size); | |
138 | print_engine_issue_prefix_hook (file); | |
139 | print_idecode_body (file, table, "nia = "); | |
140 | print_engine_issue_postfix_hook (file); | |
141 | } | |
142 | else | |
143 | { | |
144 | lf_putstr (file, "idecode_cache *cache_entry =\n"); | |
145 | lf_putstr (file, " cpu_icache_entry (cpu, cia);\n"); | |
146 | lf_putstr (file, "if (cache_entry->address == cia)\n"); | |
147 | lf_putstr (file, " {\n"); | |
148 | lf_indent (file, -4); | |
149 | lf_putstr (file, "/* cache hit */\n"); | |
150 | lf_putstr (file, "idecode_semantic *const semantic = cache_entry->semantic;\n"); | |
151 | lf_putstr (file, "cia = semantic (cpu, cache_entry, cia);\n"); | |
152 | /* tail */ | |
153 | lf_indent (file, -4); | |
154 | lf_putstr (file, " }\n"); | |
155 | lf_putstr (file, "else\n"); | |
156 | lf_putstr (file, " {\n"); | |
157 | lf_indent (file, +4); | |
158 | lf_putstr (file, "/* cache miss */\n"); | |
159 | if (!options.gen.semantic_icache) | |
160 | { | |
161 | lf_putstr (file, "idecode_semantic *semantic;\n"); | |
162 | } | |
163 | lf_printf (file, "instruction_word instruction = IMEM%d (cia);\n", | |
164 | options.insn_bit_size); | |
165 | lf_putstr (file, "if (WITH_MON != 0)\n"); | |
166 | lf_putstr (file, " mon_event (mon_event_icache_miss, cpu, cia);\n"); | |
167 | if (options.gen.semantic_icache) | |
168 | { | |
169 | lf_putstr (file, "{\n"); | |
170 | lf_indent (file, +2); | |
171 | print_engine_issue_prefix_hook (file); | |
172 | print_idecode_body (file, table, "nia ="); | |
173 | print_engine_issue_postfix_hook (file); | |
174 | lf_indent (file, -2); | |
175 | lf_putstr (file, "}\n"); | |
176 | } | |
177 | else | |
178 | { | |
179 | print_engine_issue_prefix_hook (file); | |
180 | print_idecode_body (file, table, "semantic ="); | |
181 | lf_putstr (file, "nia = semantic (cpu, cache_entry, cia);\n"); | |
182 | print_engine_issue_postfix_hook (file); | |
183 | } | |
184 | lf_indent (file, -4); | |
185 | lf_putstr (file, " }\n"); | |
186 | } | |
187 | ||
188 | /* update the cpu if necessary */ | |
189 | switch (options.gen.nia) | |
190 | { | |
191 | case nia_is_cia_plus_one: | |
192 | lf_printf (file, "\n"); | |
193 | lf_printf (file, "/* Update the instruction address */\n"); | |
194 | lf_printf (file, "cia = nia;\n"); | |
195 | break; | |
196 | case nia_is_void: | |
197 | case nia_is_invalid: | |
198 | ERROR ("engine gen when NIA complex"); | |
199 | } | |
200 | ||
201 | /* events */ | |
202 | lf_putstr (file, "\n"); | |
203 | lf_putstr (file, "/* process any events */\n"); | |
204 | lf_putstr (file, "if (sim_events_tick (sd))\n"); | |
205 | lf_putstr (file, " {\n"); | |
206 | lf_putstr (file, " CIA_SET (CPU, cia);\n"); | |
207 | lf_putstr (file, " sim_events_process (sd);\n"); | |
208 | lf_putstr (file, " cia = CIA_GET (CPU);\n"); | |
209 | lf_putstr (file, " }\n"); | |
210 | ||
211 | lf_indent (file, -4); | |
212 | lf_printf (file, " }\n"); | |
213 | } | |
214 | ||
215 | if (options.gen.smp) | |
216 | { | |
217 | ||
218 | lf_putstr (file, " | |
219 | /* CASE 2: SMP (With or without ICACHE) | |
220 | ||
221 | The complexity here comes from needing to correctly halt the simulator | |
222 | when it is aborted. For instance, if cpu0 requests a restart then | |
223 | cpu1 will normally be the next cpu that is run. Cpu0 being restarted | |
224 | after all the other CPU's and the event queue have been processed */ | |
225 | ||
226 | "); | |
227 | ||
228 | lf_putstr (file, "\n"); | |
229 | lf_printf (file, "/* 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, "engine_semantic *semantic = cache_entry->semantic;\n"); | |
263 | lf_putstr (file, "cia = semantic(processor, cache_entry, cia);\n"); | |
264 | /* tail */ | |
265 | lf_putstr (file, "cpu_set_program_counter(processor, cia);\n"); | |
266 | lf_putstr (file, "\n"); | |
267 | lf_indent (file, -2); | |
268 | } | |
269 | lf_putstr (file, "}\n"); | |
270 | lf_putstr (file, "else {\n"); | |
271 | { | |
272 | lf_indent (file, +2); | |
273 | lf_putstr (file, "\n"); | |
274 | lf_putstr (file, "/* cache miss */\n"); | |
275 | if (!options.gen.semantic_icache) | |
276 | { | |
277 | lf_putstr (file, "engine_semantic *semantic;\n"); | |
278 | } | |
279 | lf_printf (file, "instruction_word instruction = IMEM%d (cia);\n", | |
280 | options.insn_bit_size); | |
281 | lf_putstr (file, "if (WITH_MON != 0)\n"); | |
282 | lf_putstr (file, " mon_event(mon_event_icache_miss, processors[current_cpu], cia);\n"); | |
283 | if (options.gen.semantic_icache) | |
284 | { | |
285 | lf_putstr (file, "{\n"); | |
286 | lf_indent (file, +2); | |
287 | print_engine_issue_prefix_hook (file); | |
288 | print_idecode_body(file, table, "cia ="); | |
289 | print_engine_issue_postfix_hook (file); | |
290 | lf_indent (file, -2); | |
291 | lf_putstr (file, "}\n"); | |
292 | } | |
293 | else | |
294 | { | |
295 | print_engine_issue_prefix_hook (file); | |
296 | print_idecode_body(file, table, "semantic = "); | |
297 | lf_putstr (file, "cia = semantic(processor, cache_entry, cia);\n"); | |
298 | print_engine_issue_postfix_hook (file); | |
299 | } | |
300 | /* tail */ | |
301 | lf_putstr (file, "cpu_set_program_counter(processor, cia);\n"); | |
302 | lf_putstr (file, "\n"); | |
303 | lf_indent (file, -2); | |
304 | } | |
305 | lf_putstr (file, "}\n"); | |
306 | } | |
307 | ||
308 | lf_putstr (file, "\n"); | |
309 | lf_putstr (file, "current_cpu += 1;\n"); | |
310 | lf_putstr (file, "if (current_cpu == nr_cpus)\n"); | |
311 | lf_putstr (file, " {\n"); | |
312 | lf_putstr (file, " if (sim_events_tick (sd))\n"); | |
313 | lf_putstr (file, " {\n"); | |
314 | lf_putstr (file, " sim_events_process (sd);\n"); | |
315 | lf_putstr (file, " }\n"); | |
316 | lf_putstr (file, " current_cpu = 0;\n"); | |
317 | lf_putstr (file, " }\n"); | |
318 | ||
319 | /* tail */ | |
320 | lf_indent (file, -4); | |
321 | lf_putstr (file, " }\n"); | |
322 | } | |
323 | ||
324 | ||
325 | lf_indent (file, -2); | |
326 | lf_putstr (file, "}\n"); | |
327 | } | |
328 | ||
329 | ||
330 | /****************************************************************/ | |
331 | ||
332 | #if 0 | |
333 | static void | |
334 | print_jump (lf *file, | |
335 | int is_tail) | |
336 | { | |
337 | if (!options.gen.smp) | |
338 | { | |
339 | lf_putstr (file, "if (event_queue_tick (sd))\n"); | |
340 | lf_putstr (file, " {\n"); | |
341 | lf_putstr (file, " CPU_CIA (processor) = nia;\n"); | |
342 | lf_putstr (file, " sim_events_process (sd);\n"); | |
343 | lf_putstr (file, " }\n"); | |
344 | lf_putstr (file, "}\n"); | |
345 | } | |
346 | ||
347 | if (options.gen.smp) | |
348 | { | |
349 | if (is_tail) | |
350 | lf_putstr (file, "cpu_set_program_counter(processor, nia);\n"); | |
351 | lf_putstr (file, "current_cpu += 1;\n"); | |
352 | lf_putstr (file, "if (current_cpu >= nr_cpus)\n"); | |
353 | lf_putstr (file, " {\n"); | |
354 | lf_putstr (file, " if (sim_events_tick (sd))\n"); | |
355 | lf_putstr (file, " {\n"); | |
356 | lf_putstr (file, " sim_events_process (sd);\n"); | |
357 | lf_putstr (file, " }\n"); | |
358 | lf_putstr (file, " current_cpu = 0;\n"); | |
359 | lf_putstr (file, " }\n"); | |
360 | lf_putstr (file, "processor = processors[current_cpu];\n"); | |
361 | lf_putstr (file, "nia = cpu_get_program_counter(processor);\n"); | |
362 | } | |
363 | ||
364 | if (options.gen.icache) | |
365 | { | |
366 | lf_putstr (file, "cache_entry = cpu_icache_entry(processor, nia);\n"); | |
367 | lf_putstr (file, "if (cache_entry->address == nia) {\n"); | |
368 | lf_putstr (file, " /* cache hit */\n"); | |
369 | lf_putstr (file, " goto *cache_entry->semantic;\n"); | |
370 | lf_putstr (file, "}\n"); | |
371 | if (is_tail) { | |
372 | lf_putstr (file, "goto cache_miss;\n"); | |
373 | } | |
374 | } | |
375 | ||
376 | if (!options.gen.icache && is_tail) | |
377 | { | |
378 | lf_printf (file, "goto engine;\n"); | |
379 | } | |
380 | ||
381 | } | |
382 | #endif | |
383 | ||
384 | ||
385 | #if 0 | |
386 | static void | |
387 | print_jump_insn (lf *file, | |
388 | insn_entry *instruction, | |
389 | opcode_bits *expanded_bits, | |
390 | opcode_field *opcodes, | |
391 | cache_entry *cache_rules) | |
392 | { | |
393 | insn_opcodes opcode_path; | |
394 | ||
395 | memset (&opcode_path, 0, sizeof (opcode_path)); | |
396 | opcode_path.opcode = opcodes; | |
397 | ||
398 | /* what we are for the moment */ | |
399 | lf_printf (file, "\n"); | |
400 | print_my_defines (file, | |
401 | instruction->name, | |
402 | instruction->format_name, | |
403 | expanded_bits); | |
404 | ||
405 | /* output the icache entry */ | |
406 | if (options.gen.icache) | |
407 | { | |
408 | lf_printf (file, "\n"); | |
409 | lf_indent (file, -1); | |
410 | print_function_name (file, | |
411 | instruction->name, | |
412 | instruction->format_name, | |
413 | NULL, | |
414 | expanded_bits, | |
415 | 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, | |
427 | instruction, | |
428 | expanded_bits, | |
429 | cache_rules, | |
430 | 0, /*use_defines*/ | |
431 | put_values_in_icache); | |
432 | lf_printf (file, "cache_entry->address = nia;\n"); | |
433 | lf_printf (file, "cache_entry->semantic = &&"); | |
434 | print_function_name (file, | |
435 | instruction->name, | |
436 | instruction->format_name, | |
437 | NULL, | |
438 | expanded_bits, | |
439 | function_name_prefix_semantics); | |
440 | lf_printf (file, ";\n"); | |
441 | if (options.gen.semantic_icache) | |
442 | { | |
443 | print_semantic_body (file, | |
444 | instruction, | |
445 | expanded_bits, | |
446 | &opcode_path); | |
447 | print_jump(file, 1/*is-tail*/); | |
448 | } | |
449 | else | |
450 | { | |
451 | lf_printf (file, "/* goto "); | |
452 | print_function_name (file, | |
453 | instruction->name, | |
454 | instruction->format_name, | |
455 | NULL, | |
456 | expanded_bits, | |
457 | function_name_prefix_semantics); | |
458 | lf_printf (file, "; */\n"); | |
459 | } | |
460 | lf_indent (file, -2); | |
461 | lf_putstr (file, "}\n"); | |
462 | lf_indent (file, -2); | |
463 | lf_printf (file, "}\n"); | |
464 | } | |
465 | ||
466 | /* print the semantics */ | |
467 | lf_printf (file, "\n"); | |
468 | lf_indent (file, -1); | |
469 | print_function_name (file, | |
470 | instruction->name, | |
471 | instruction->format_name, | |
472 | NULL, | |
473 | expanded_bits, | |
474 | function_name_prefix_semantics); | |
475 | lf_printf (file, ":\n"); | |
476 | lf_indent (file, +1); | |
477 | lf_printf (file, "{\n"); | |
478 | lf_indent (file, +2); | |
479 | lf_putstr (file, "const unsigned_word cia = nia;\n"); | |
480 | print_icache_body (file, | |
481 | instruction, | |
482 | expanded_bits, | |
483 | cache_rules, | |
484 | (options.gen.direct_access | |
485 | ? define_variables | |
486 | : declare_variables), | |
487 | (options.gen.icache | |
488 | ? get_values_from_icache | |
489 | : do_not_use_icache)); | |
490 | print_semantic_body (file, | |
491 | instruction, | |
492 | expanded_bits, | |
493 | &opcode_path); | |
494 | if (options.gen.direct_access) | |
495 | print_icache_body (file, | |
496 | instruction, | |
497 | expanded_bits, | |
498 | cache_rules, | |
499 | undef_variables, | |
500 | (options.gen.icache | |
501 | ? get_values_from_icache | |
502 | : do_not_use_icache)); | |
503 | print_jump(file, 1/*is tail*/); | |
504 | lf_indent (file, -2); | |
505 | lf_printf (file, "}\n"); | |
506 | } | |
507 | #endif | |
508 | ||
509 | ||
510 | #if 0 | |
511 | static void | |
512 | print_jump_definition (lf *file, | |
513 | gen_entry *entry, | |
514 | int depth, | |
515 | void *data) | |
516 | { | |
517 | cache_entry *cache_rules = (cache_entry*)data; | |
518 | if (entry->opcode_rule->with_duplicates) | |
519 | { | |
520 | ASSERT (entry->nr_insns == 1 | |
521 | && entry->opcode == NULL | |
522 | && entry->parent != NULL | |
523 | && entry->parent->opcode != NULL); | |
524 | ASSERT (entry->nr_insns == 1 | |
525 | && entry->opcode == NULL | |
526 | && entry->parent != NULL | |
527 | && entry->parent->opcode != NULL | |
528 | && entry->parent->opcode_rule != NULL); | |
529 | print_jump_insn (file, | |
530 | entry->insns->insn, | |
531 | entry->expanded_bits, | |
532 | entry->opcode, | |
533 | cache_rules); | |
534 | } | |
535 | else | |
536 | { | |
537 | print_jump_insn (file, | |
538 | entry->insns->insn, | |
539 | NULL, | |
540 | NULL, | |
541 | cache_rules); | |
542 | } | |
543 | } | |
544 | #endif | |
545 | ||
546 | ||
547 | #if 0 | |
548 | static void | |
549 | print_jump_internal_function (lf *file, | |
550 | function_entry *function, | |
551 | void *data) | |
552 | { | |
553 | if (function->is_internal) | |
554 | { | |
555 | lf_printf (file, "\n"); | |
556 | lf_print__line_ref (file, function->line); | |
557 | lf_indent (file, -1); | |
558 | print_function_name (file, | |
559 | function->name, | |
560 | NULL, | |
561 | NULL, | |
562 | NULL, | |
563 | (options.gen.icache | |
564 | ? function_name_prefix_icache | |
565 | : function_name_prefix_semantics)); | |
566 | lf_printf (file, ":\n"); | |
567 | lf_indent (file, +1); | |
568 | lf_printf (file, "{\n"); | |
569 | lf_indent (file, +2); | |
570 | lf_printf (file, "const unsigned_word cia = nia;\n"); | |
571 | table_print_code (file, function->code); | |
572 | lf_print__internal_ref (file); | |
573 | lf_printf (file, "error(\"Internal function must longjump\\n\");\n"); | |
574 | lf_indent (file, -2); | |
575 | lf_printf (file, "}\n"); | |
576 | } | |
577 | } | |
578 | #endif | |
579 | ||
580 | ||
581 | #if 0 | |
582 | static void | |
583 | print_jump_body (lf *file, | |
584 | gen_entry *entry, | |
585 | insn_table *isa, | |
586 | cache_entry *cache_rules) | |
587 | { | |
588 | lf_printf (file, "{\n"); | |
589 | lf_indent (file, +2); | |
590 | lf_putstr (file, "jmp_buf halt;\n"); | |
591 | lf_putstr (file, "jmp_buf restart;\n"); | |
592 | lf_putstr (file, "cpu *processor = NULL;\n"); | |
593 | lf_putstr (file, "unsigned_word nia = -1;\n"); | |
594 | lf_putstr (file, "instruction_word instruction = 0;\n"); | |
595 | if (options.gen.icache) | |
596 | { | |
597 | lf_putstr (file, "engine_cache *cache_entry = NULL;\n"); | |
598 | } | |
599 | if (options.gen.smp) | |
600 | { | |
601 | lf_putstr (file, "int current_cpu = -1;\n"); | |
602 | } | |
603 | ||
604 | /* all the switches and tables - they know about jumping */ | |
605 | print_idecode_lookups (file, entry, cache_rules); | |
606 | ||
607 | /* start the simulation up */ | |
608 | if (options.gen.icache) | |
609 | { | |
610 | lf_putstr (file, "\n"); | |
611 | lf_putstr (file, "{\n"); | |
612 | lf_putstr (file, " int cpu_nr;\n"); | |
613 | lf_putstr (file, " for (cpu_nr = 0; cpu_nr < nr_cpus; cpu_nr++)\n"); | |
614 | lf_putstr (file, " cpu_flush_icache(processors[cpu_nr]);\n"); | |
615 | lf_putstr (file, "}\n"); | |
616 | } | |
617 | ||
618 | lf_putstr (file, "\n"); | |
619 | lf_putstr (file, "psim_set_halt_and_restart(system, &halt, &restart);\n"); | |
620 | ||
621 | lf_putstr (file, "\n"); | |
622 | lf_putstr (file, "if (setjmp(halt))\n"); | |
623 | lf_putstr (file, " return;\n"); | |
624 | ||
625 | lf_putstr (file, "\n"); | |
626 | lf_putstr (file, "setjmp(restart);\n"); | |
627 | ||
628 | lf_putstr (file, "\n"); | |
629 | if (!options.gen.smp) | |
630 | { | |
631 | lf_putstr (file, "processor = processors[0];\n"); | |
632 | lf_putstr (file, "nia = cpu_get_program_counter(processor);\n"); | |
633 | } | |
634 | else | |
635 | { | |
636 | lf_putstr (file, "current_cpu = psim_last_cpu(system);\n"); | |
637 | } | |
638 | ||
639 | if (!options.gen.icache) | |
640 | { | |
641 | lf_printf (file, "\n"); | |
642 | lf_indent (file, -1); | |
643 | lf_printf (file, "engine:\n"); | |
644 | lf_indent (file, +1); | |
645 | } | |
646 | ||
647 | print_jump(file, 0/*is_tail*/); | |
648 | ||
649 | if (options.gen.icache) | |
650 | { | |
651 | lf_indent (file, -1); | |
652 | lf_printf (file, "cache_miss:\n"); | |
653 | lf_indent (file, +1); | |
654 | } | |
655 | ||
656 | print_engine_issue_prefix_hook (file); | |
657 | lf_putstr (file, "instruction\n"); | |
658 | lf_putstr (file, " = vm_instruction_map_read(cpu_instruction_map(processor),\n"); | |
659 | lf_putstr (file, " processor, nia);\n"); | |
660 | print_engine_issue_prefix_hook (file); | |
661 | print_idecode_body (file, entry, "/*IGORE*/"); | |
662 | print_engine_issue_postfix_hook (file); | |
663 | ||
664 | /* print out a table of all the internals functions */ | |
665 | function_entry_traverse (file, isa->functions, | |
666 | print_jump_internal_function, | |
667 | NULL); | |
668 | ||
669 | /* print out a table of all the instructions */ | |
670 | ERROR ("Use the list of semantic functions, not travere_tree"); | |
671 | gen_entry_traverse_tree (file, entry, | |
672 | 1, | |
673 | NULL, /* start */ | |
674 | print_jump_definition, /* leaf */ | |
675 | NULL, /* end */ | |
676 | cache_rules); | |
677 | lf_indent (file, -2); | |
678 | lf_printf (file, "}\n"); | |
679 | } | |
680 | #endif | |
681 | ||
682 | ||
683 | /****************************************************************/ | |
684 | ||
685 | ||
686 | void | |
687 | print_engine_run_function_header (lf *file, | |
688 | char *processor, | |
689 | function_decl_type decl_type) | |
690 | { | |
691 | int indent; | |
692 | lf_printf (file, "\n"); | |
693 | switch (decl_type) | |
694 | { | |
695 | case is_function_declaration: | |
696 | lf_print__function_type (file, "void", "INLINE_ENGINE", "\n"); | |
697 | break; | |
698 | case is_function_definition: | |
699 | lf_print__function_type (file, "void", "INLINE_ENGINE", " "); | |
700 | break; | |
701 | case is_function_variable: | |
702 | lf_printf (file, "void (*"); | |
703 | break; | |
704 | } | |
705 | indent = print_function_name (file, | |
706 | "run", | |
707 | NULL, /* format name */ | |
708 | processor, | |
709 | NULL, /* expanded bits */ | |
710 | function_name_prefix_engine); | |
711 | switch (decl_type) | |
712 | { | |
713 | case is_function_definition: | |
714 | lf_putstr (file, "\n("); | |
715 | indent = 1; | |
716 | break; | |
717 | case is_function_declaration: | |
718 | indent += lf_printf (file, " ("); | |
719 | break; | |
720 | case is_function_variable: | |
721 | lf_putstr (file, ")\n("); | |
722 | indent = 1; | |
723 | break; | |
724 | } | |
725 | lf_indent (file, +indent); | |
726 | lf_printf (file, "SIM_DESC sd,\n"); | |
727 | lf_printf (file, "int next_cpu_nr,\n"); | |
728 | lf_printf (file, "int nr_cpus,\n"); | |
729 | lf_printf (file, "int siggnal)"); | |
730 | lf_indent (file, -indent); | |
731 | switch (decl_type) | |
732 | { | |
733 | case is_function_definition: | |
734 | lf_putstr (file, "\n"); | |
735 | break; | |
736 | case is_function_variable: | |
737 | case is_function_declaration: | |
738 | lf_putstr (file, ";\n"); | |
739 | break; | |
740 | } | |
741 | } | |
742 | ||
743 | ||
744 | void | |
745 | gen_engine_h (lf *file, | |
746 | gen_table *gen, | |
747 | insn_table *isa, | |
748 | cache_entry *cache_rules) | |
749 | { | |
750 | gen_list *entry; | |
751 | for (entry = gen->tables; entry != NULL; entry = entry->next) | |
752 | { | |
753 | print_engine_run_function_header (file, | |
754 | (options.gen.multi_sim | |
755 | ? entry->model->name | |
756 | : NULL), | |
757 | is_function_declaration); | |
758 | } | |
759 | } | |
760 | ||
761 | ||
762 | void | |
763 | gen_engine_c(lf *file, | |
764 | gen_table *gen, | |
765 | insn_table *isa, | |
766 | cache_entry *cache_rules) | |
767 | { | |
768 | gen_list *entry; | |
769 | /* the intro */ | |
770 | print_includes (file); | |
771 | print_include_inline (file, options.module.semantics); | |
772 | print_include (file, options.module.engine); | |
773 | lf_printf (file, "\n"); | |
774 | lf_printf (file, "#include \"sim-assert.h\"\n"); | |
775 | lf_printf (file, "\n"); | |
776 | print_idecode_globals (file); | |
777 | lf_printf (file, "\n"); | |
778 | ||
779 | for (entry = gen->tables; entry != NULL; entry = entry->next) | |
780 | { | |
781 | switch (options.gen.code) | |
782 | { | |
783 | case generate_calls: | |
784 | print_idecode_lookups (file, entry->table, cache_rules); | |
785 | ||
786 | /* output the main engine routine */ | |
787 | print_engine_run_function_header (file, | |
788 | (options.gen.multi_sim | |
789 | ? entry->model->name | |
790 | : NULL), | |
791 | is_function_definition); | |
792 | print_run_body (file, entry->table); | |
793 | break; | |
794 | ||
795 | case generate_jumps: | |
796 | ERROR ("Jumps currently unimplemented"); | |
797 | #if 0 | |
798 | print_engine_run_function_header (file, | |
799 | entry->processor, | |
800 | is_function_definition); | |
801 | print_jump_body (file, entry->table, | |
802 | isa, cache_rules); | |
803 | #endif | |
804 | break; | |
805 | } | |
806 | } | |
807 | } |