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 | ||
22 | #include "misc.h" | |
23 | #include "lf.h" | |
24 | #include "table.h" | |
25 | #include "filter.h" | |
26 | #include "igen.h" | |
27 | ||
28 | #include "ld-insn.h" | |
29 | #include "ld-decode.h" | |
30 | ||
31 | #include "gen.h" | |
32 | ||
33 | #include "gen-semantics.h" | |
34 | #include "gen-idecode.h" | |
35 | #include "gen-icache.h" | |
36 | ||
37 | ||
38 | ||
39 | static void | |
40 | print_icache_function_header (lf *file, | |
41 | const char *basename, | |
42 | const char *format_name, | |
43 | opcode_bits *expanded_bits, | |
44 | int is_function_definition, | |
45 | int nr_prefetched_words) | |
46 | { | |
47 | lf_printf(file, "\n"); | |
48 | lf_print__function_type_function (file, print_icache_function_type, | |
49 | "EXTERN_ICACHE", " "); | |
50 | print_function_name (file, | |
51 | basename, format_name, NULL, | |
52 | expanded_bits, | |
53 | function_name_prefix_icache); | |
54 | lf_printf (file, "\n("); | |
55 | print_icache_function_formal (file, nr_prefetched_words); | |
56 | lf_printf (file, ")"); | |
57 | if (!is_function_definition) | |
58 | lf_printf (file, ";"); | |
59 | lf_printf (file, "\n"); | |
60 | } | |
61 | ||
62 | ||
63 | void | |
64 | print_icache_declaration (lf *file, | |
65 | insn_entry *insn, | |
66 | opcode_bits *expanded_bits, | |
67 | insn_opcodes *opcodes, | |
68 | int nr_prefetched_words) | |
69 | { | |
70 | print_icache_function_header (file, | |
71 | insn->name, | |
72 | insn->format_name, | |
73 | expanded_bits, | |
74 | 0/* is not function definition */, | |
75 | nr_prefetched_words); | |
76 | } | |
77 | ||
78 | ||
79 | ||
80 | static void | |
81 | print_icache_extraction (lf *file, | |
82 | const char *format_name, | |
83 | cache_entry_type cache_type, | |
84 | const char *entry_name, | |
85 | const char *entry_type, | |
86 | const char *entry_expression, | |
87 | char *single_insn_field, | |
88 | line_ref *line, | |
89 | insn_field_entry *cur_field, | |
90 | opcode_bits *expanded_bits, | |
91 | icache_decl_type what_to_declare, | |
92 | icache_body_type what_to_do) | |
93 | { | |
94 | const char *expression; | |
95 | opcode_bits *bits; | |
96 | char *reason; | |
97 | ASSERT (format_name != NULL); | |
98 | ASSERT (entry_name != NULL); | |
99 | ||
100 | /* figure out exactly what should be going on here */ | |
101 | switch (cache_type) | |
102 | { | |
103 | case scratch_value: | |
104 | if ((what_to_do & put_values_in_icache) | |
105 | || what_to_do == do_not_use_icache) | |
106 | { | |
107 | reason = "scratch"; | |
108 | what_to_do = do_not_use_icache; | |
109 | } | |
110 | else | |
111 | return; | |
112 | break; | |
113 | case compute_value: | |
114 | if ((what_to_do & get_values_from_icache) | |
115 | || what_to_do == do_not_use_icache) | |
116 | { | |
117 | reason = "compute"; | |
118 | what_to_do = do_not_use_icache; | |
119 | } | |
120 | else | |
121 | return; | |
122 | break; | |
123 | case cache_value: | |
124 | if ((what_to_declare != undef_variables) | |
125 | || !(what_to_do & put_values_in_icache)) | |
126 | { | |
127 | reason = "cache"; | |
128 | what_to_declare = ((what_to_do & put_values_in_icache) | |
129 | ? declare_variables | |
130 | : what_to_declare); | |
131 | } | |
132 | else | |
133 | return; | |
134 | break; | |
135 | } | |
136 | ||
137 | /* For the type, default to a simple unsigned */ | |
138 | if (entry_type == NULL || strlen (entry_type) == 0) | |
139 | entry_type = "unsigned"; | |
140 | ||
141 | /* look through the set of expanded sub fields to see if this field | |
142 | has been given a constant value */ | |
143 | for (bits = expanded_bits; | |
144 | bits != NULL; | |
145 | bits = bits->next) | |
146 | { | |
147 | if (bits->field == cur_field) | |
148 | break; | |
149 | } | |
150 | ||
151 | /* Define a storage area for the cache element */ | |
152 | switch (what_to_declare) | |
153 | { | |
154 | case undef_variables: | |
155 | /* We've finished with the #define value - destory it */ | |
156 | lf_indent_suppress (file); | |
157 | lf_printf (file, "#undef %s\n", entry_name); | |
158 | return; | |
159 | case define_variables: | |
160 | /* Using direct access for this entry, clear any prior | |
161 | definition, then define it */ | |
162 | lf_indent_suppress (file); | |
163 | lf_printf (file, "#undef %s\n", entry_name); | |
164 | /* Don't type cast pointer types! */ | |
165 | lf_indent_suppress (file); | |
166 | if (strchr (entry_type, '*') != NULL) | |
167 | lf_printf (file, "#define %s (", entry_name); | |
168 | else | |
169 | lf_printf (file, "#define %s ((%s) ", entry_name, entry_type); | |
170 | break; | |
171 | case declare_variables: | |
172 | /* using variables to define the value */ | |
173 | if (line != NULL) | |
174 | lf_print__line_ref (file, line); | |
175 | lf_printf (file, "%s const %s UNUSED = ", entry_type, entry_name); | |
176 | break; | |
177 | } | |
178 | ||
179 | ||
180 | /* define a value for that storage area as determined by what is in | |
181 | the cache */ | |
182 | if (bits != NULL | |
183 | && single_insn_field != NULL | |
184 | && strcmp (entry_name, single_insn_field) == 0 | |
185 | && strcmp (entry_name, cur_field->val_string) == 0 | |
186 | && ((bits->opcode->is_boolean && bits->value == 0) | |
187 | || (!bits->opcode->is_boolean))) | |
188 | { | |
189 | /* The cache rule is specifying what to do with a simple | |
190 | instruction field. | |
191 | ||
192 | Because of instruction expansion, the field is either a | |
193 | constant value or equal to the specified constant (boolean | |
194 | comparison). (The latter indicated by bits->value == 0). | |
195 | ||
196 | The case of a field not being equal to the specified boolean | |
197 | value is handled later. */ | |
198 | expression = "constant field"; | |
199 | ASSERT (bits->field == cur_field); | |
200 | if (bits->opcode->is_boolean) | |
201 | { | |
202 | ASSERT (bits->value == 0); | |
203 | lf_printf (file, "%d", bits->opcode->boolean_constant); | |
204 | } | |
205 | else if (bits->opcode->last < bits->field->last) | |
206 | { | |
207 | lf_printf (file, "%d", | |
208 | bits->value << (bits->field->last - bits->opcode->last)); | |
209 | } | |
210 | else | |
211 | { | |
212 | lf_printf (file, "%d", bits->value); | |
213 | } | |
214 | } | |
215 | else if (bits != NULL | |
216 | && single_insn_field != NULL | |
217 | && strncmp (entry_name, | |
218 | single_insn_field, | |
219 | strlen (single_insn_field)) == 0 | |
220 | && strncmp (entry_name + strlen (single_insn_field), | |
221 | "_is_", | |
222 | strlen ("_is_")) == 0 | |
223 | && ((bits->opcode->is_boolean | |
224 | && ((unsigned) atol (entry_name + strlen (single_insn_field) + strlen ("_is_")) | |
225 | == bits->opcode->boolean_constant)) | |
226 | || (!bits->opcode->is_boolean))) | |
227 | { | |
228 | /* The cache rule defines an entry for the comparison between a | |
229 | single instruction field and a constant. The value of the | |
230 | comparison in someway matches that of the opcode field that | |
231 | was made constant through expansion. */ | |
232 | expression = "constant compare"; | |
233 | if (bits->opcode->is_boolean) | |
234 | { | |
235 | lf_printf (file, "%d /* %s == %d */", | |
236 | bits->value == 0, | |
237 | single_insn_field, | |
238 | bits->opcode->boolean_constant); | |
239 | } | |
240 | else if (bits->opcode->last < bits->field->last) | |
241 | { | |
242 | lf_printf (file, "%d /* %s == %d */", | |
243 | (atol (entry_name + strlen (single_insn_field) + strlen ("_is_")) | |
244 | == (bits->value << (bits->field->last - bits->opcode->last))), | |
245 | single_insn_field, | |
246 | (bits->value << (bits->field->last - bits->opcode->last))); | |
247 | } | |
248 | else | |
249 | { | |
250 | lf_printf (file, "%d /* %s == %d */", | |
251 | (atol (entry_name + strlen (single_insn_field) + strlen ("_is_")) | |
252 | == bits->value), | |
253 | single_insn_field, | |
254 | bits->value); | |
255 | } | |
256 | } | |
257 | else | |
258 | { | |
259 | /* put the field in the local variable, possibly also enter it | |
260 | into the cache */ | |
261 | expression = "extraction"; | |
262 | /* handle the cache */ | |
263 | if ((what_to_do & get_values_from_icache) | |
264 | || (what_to_do & put_values_in_icache)) | |
265 | { | |
266 | lf_printf (file, "cache_entry->crack.%s.%s", | |
267 | format_name, | |
268 | entry_name); | |
269 | if (what_to_do & put_values_in_icache) /* also put it in the cache? */ | |
270 | { | |
271 | lf_printf (file, " = "); | |
272 | } | |
273 | } | |
274 | if ((what_to_do & put_values_in_icache) | |
275 | || what_to_do == do_not_use_icache) | |
276 | { | |
277 | if (cur_field != NULL) | |
278 | { | |
279 | if (entry_expression != NULL && strlen (entry_expression) > 0) | |
280 | error (line, "Instruction field entry with nonempty expression\n"); | |
281 | if (cur_field->first == 0 && cur_field->last == options.insn_bit_size - 1) | |
282 | lf_printf (file, "(instruction_%d)", | |
283 | cur_field->word_nr); | |
284 | else if (cur_field->last == options.insn_bit_size - 1) | |
285 | lf_printf (file, "MASKED%d (instruction_%d, %d, %d)", | |
286 | options.insn_bit_size, | |
287 | cur_field->word_nr, | |
288 | i2target (options.hi_bit_nr, cur_field->first), | |
289 | i2target (options.hi_bit_nr, cur_field->last)); | |
290 | else | |
291 | lf_printf (file, "EXTRACTED%d (instruction_%d, %d, %d)", | |
292 | options.insn_bit_size, | |
293 | cur_field->word_nr, | |
294 | i2target (options.hi_bit_nr, cur_field->first), | |
295 | i2target (options.hi_bit_nr, cur_field->last)); | |
296 | } | |
297 | else | |
298 | { | |
299 | lf_printf (file, "%s", entry_expression); | |
300 | } | |
301 | } | |
302 | } | |
303 | ||
304 | switch (what_to_declare) | |
305 | { | |
306 | case define_variables: | |
307 | lf_printf (file, ")"); | |
308 | break; | |
309 | case undef_variables: | |
310 | break; | |
311 | case declare_variables: | |
312 | lf_printf (file, ";"); | |
313 | break; | |
314 | } | |
315 | ||
316 | ASSERT (reason != NULL && expression != NULL); | |
317 | lf_printf (file, " /* %s - %s */\n", reason, expression); | |
318 | } | |
319 | ||
320 | ||
321 | void | |
322 | print_icache_body (lf *file, | |
323 | insn_entry *instruction, | |
324 | opcode_bits *expanded_bits, | |
325 | cache_entry *cache_rules, | |
326 | icache_decl_type what_to_declare, | |
327 | icache_body_type what_to_do, | |
328 | int nr_prefetched_words) | |
329 | { | |
330 | /* extract instruction fields */ | |
331 | lf_printf (file, "/* Extraction: %s\n", instruction->name); | |
332 | lf_printf (file, " "); | |
333 | switch (what_to_declare) | |
334 | { | |
335 | case define_variables: | |
336 | lf_printf (file, "#define"); | |
337 | break; | |
338 | case declare_variables: | |
339 | lf_printf (file, "declare"); | |
340 | break; | |
341 | case undef_variables: | |
342 | lf_printf (file, "#undef"); | |
343 | break; | |
344 | } | |
345 | lf_printf (file, " "); | |
346 | switch (what_to_do) | |
347 | { | |
348 | case get_values_from_icache: | |
349 | lf_printf (file, "get-values-from-icache"); | |
350 | break; | |
351 | case put_values_in_icache: | |
352 | lf_printf (file, "put-values-in-icache"); | |
353 | break; | |
354 | case both_values_and_icache: | |
355 | lf_printf (file, "get-values-from-icache|put-values-in-icache"); | |
356 | break; | |
357 | case do_not_use_icache: | |
358 | lf_printf (file, "do-not-use-icache"); | |
359 | break; | |
360 | } | |
361 | lf_printf (file, "\n "); | |
362 | print_insn_words (file, instruction); | |
363 | lf_printf(file, " */\n"); | |
364 | ||
365 | /* pass zero - fetch from memory any missing instructions. | |
366 | ||
367 | Some of the instructions will have already been fetched (in the | |
368 | instruction array), others will still need fetching. */ | |
369 | switch (what_to_do) | |
370 | { | |
371 | case get_values_from_icache: | |
372 | break; | |
373 | case put_values_in_icache: | |
374 | case both_values_and_icache: | |
375 | case do_not_use_icache: | |
376 | { | |
377 | int word_nr; | |
378 | switch (what_to_declare) | |
379 | { | |
380 | case undef_variables: | |
381 | break; | |
382 | case define_variables: | |
383 | case declare_variables: | |
384 | for (word_nr = nr_prefetched_words; | |
385 | word_nr < instruction->nr_words; | |
386 | word_nr++) | |
387 | { | |
388 | /* FIXME - should be using print_icache_extraction? */ | |
389 | lf_printf (file, "%sinstruction_word instruction_%d UNUSED = ", | |
390 | options.module.global.prefix.l, | |
391 | word_nr); | |
392 | lf_printf (file, "IMEM%d_IMMED (cia, %d)", | |
393 | options.insn_bit_size, word_nr); | |
394 | lf_printf (file, ";\n"); | |
395 | } | |
396 | } | |
397 | } | |
398 | } | |
399 | ||
400 | /* if putting the instruction words in the cache, define references | |
401 | for them */ | |
402 | if (options.gen.insn_in_icache) { | |
403 | /* FIXME: is the instruction_word type correct? */ | |
404 | print_icache_extraction (file, | |
405 | instruction->format_name, | |
406 | cache_value, | |
407 | "insn", /* name */ | |
408 | "instruction_word", /* type */ | |
409 | "instruction", /* expression */ | |
410 | NULL, /* origin */ | |
411 | NULL, /* line */ | |
412 | NULL, NULL, | |
413 | what_to_declare, | |
414 | what_to_do); | |
415 | } | |
416 | lf_printf(file, "\n"); | |
417 | ||
418 | /* pass one - process instruction fields. | |
419 | ||
420 | If there is no cache rule, the default is to enter the field into | |
421 | the cache */ | |
422 | { | |
423 | insn_word_entry *word; | |
424 | for (word = instruction->words; | |
425 | word != NULL; | |
426 | word = word->next) | |
427 | { | |
428 | insn_field_entry *cur_field; | |
429 | for (cur_field = word->first; | |
430 | cur_field->first < options.insn_bit_size; | |
431 | cur_field = cur_field->next) | |
432 | { | |
433 | if (cur_field->type == insn_field_string) | |
434 | { | |
435 | cache_entry *cache_rule; | |
436 | cache_entry_type value_type = cache_value; | |
437 | line_ref *value_line = instruction->line; | |
438 | /* check the cache table to see if it contains a rule | |
439 | overriding the default cache action for an | |
440 | instruction field */ | |
441 | for (cache_rule = cache_rules; | |
442 | cache_rule != NULL; | |
443 | cache_rule = cache_rule->next) | |
444 | { | |
445 | if (filter_is_subset (instruction->field_names, | |
446 | cache_rule->original_fields) | |
447 | && strcmp (cache_rule->name, cur_field->val_string) == 0) | |
448 | { | |
449 | value_type = cache_rule->entry_type; | |
450 | value_line = cache_rule->line; | |
451 | if (value_type == compute_value) | |
452 | { | |
453 | options.warning (cache_rule->line, | |
454 | "instruction field of type `compute' changed to `cache'\n"); | |
455 | cache_rule->entry_type = cache_value; | |
456 | } | |
457 | break; | |
458 | } | |
459 | } | |
460 | /* Define an entry for the field within the | |
461 | instruction */ | |
462 | print_icache_extraction (file, | |
463 | instruction->format_name, | |
464 | value_type, | |
465 | cur_field->val_string, /* name */ | |
466 | NULL, /* type */ | |
467 | NULL, /* expression */ | |
468 | cur_field->val_string, /* insn field */ | |
469 | value_line, | |
470 | cur_field, | |
471 | expanded_bits, | |
472 | what_to_declare, | |
473 | what_to_do); | |
474 | } | |
475 | } | |
476 | } | |
477 | } | |
478 | ||
479 | /* pass two - any cache fields not processed above */ | |
480 | { | |
481 | cache_entry *cache_rule; | |
482 | for (cache_rule = cache_rules; | |
483 | cache_rule != NULL; | |
484 | cache_rule = cache_rule->next) | |
485 | { | |
486 | if (filter_is_subset (instruction->field_names, | |
487 | cache_rule->original_fields) | |
488 | && !filter_is_member (instruction->field_names, | |
489 | cache_rule->name)) | |
490 | { | |
491 | char *single_field = filter_next (cache_rule->original_fields, ""); | |
492 | if (filter_next (cache_rule->original_fields, single_field) != NULL) | |
493 | single_field = NULL; | |
494 | print_icache_extraction (file, | |
495 | instruction->format_name, | |
496 | cache_rule->entry_type, | |
497 | cache_rule->name, | |
498 | cache_rule->type, | |
499 | cache_rule->expression, | |
500 | single_field, | |
501 | cache_rule->line, | |
502 | NULL, /* cur_field */ | |
503 | expanded_bits, | |
504 | what_to_declare, | |
505 | what_to_do); | |
506 | } | |
507 | } | |
508 | } | |
509 | ||
510 | lf_print__internal_ref (file); | |
511 | } | |
512 | ||
513 | ||
514 | ||
515 | typedef struct _form_fields form_fields; | |
516 | struct _form_fields { | |
517 | char *name; | |
518 | filter *fields; | |
519 | form_fields *next; | |
520 | }; | |
521 | ||
522 | static form_fields * | |
523 | insn_table_cache_fields (insn_table *isa) | |
524 | { | |
525 | form_fields *forms = NULL; | |
526 | insn_entry *insn; | |
527 | for (insn = isa->insns; | |
528 | insn != NULL; | |
529 | insn = insn->next) { | |
530 | form_fields **form = &forms; | |
531 | while (1) | |
532 | { | |
533 | if (*form == NULL) | |
534 | { | |
535 | /* new format name, add it */ | |
536 | form_fields *new_form = ZALLOC (form_fields); | |
537 | new_form->name = insn->format_name; | |
538 | filter_add (&new_form->fields, insn->field_names); | |
539 | *form = new_form; | |
540 | break; | |
541 | } | |
542 | else if (strcmp ((*form)->name, insn->format_name) == 0) | |
543 | { | |
544 | /* already present, add field names to the existing list */ | |
545 | filter_add (&(*form)->fields, insn->field_names); | |
546 | break; | |
547 | } | |
548 | form = &(*form)->next; | |
549 | } | |
550 | } | |
551 | return forms; | |
552 | } | |
553 | ||
554 | ||
555 | ||
556 | extern void | |
557 | print_icache_struct (lf *file, | |
558 | insn_table *isa, | |
559 | cache_entry *cache_rules) | |
560 | { | |
561 | /* Create a list of all the different instruction formats with their | |
562 | corresponding field names. */ | |
563 | form_fields *formats = insn_table_cache_fields (isa); | |
564 | ||
565 | lf_printf (file, "\n"); | |
566 | lf_printf (file, "#define WITH_%sIDECODE_CACHE_SIZE %d\n", | |
567 | options.module.global.prefix.u, | |
568 | (options.gen.icache ? options.gen.icache_size : 0)); | |
569 | lf_printf (file, "\n"); | |
570 | ||
571 | /* create an instruction cache if being used */ | |
572 | if (options.gen.icache) { | |
573 | lf_printf (file, "typedef struct _%sidecode_cache {\n", | |
574 | options.module.global.prefix.l); | |
575 | lf_indent (file, +2); | |
576 | { | |
577 | form_fields *format; | |
578 | lf_printf (file, "unsigned_word address;\n"); | |
579 | lf_printf (file, "void *semantic;\n"); | |
580 | lf_printf (file, "union {\n"); | |
581 | lf_indent (file, +2); | |
582 | for (format = formats; | |
583 | format != NULL; | |
584 | format = format->next) | |
585 | { | |
586 | lf_printf (file, "struct {\n"); | |
587 | lf_indent (file, +2); | |
588 | { | |
589 | cache_entry *cache_rule; | |
590 | char *field; | |
591 | /* space for any instruction words */ | |
592 | if (options.gen.insn_in_icache) | |
593 | lf_printf (file, "instruction_word insn[%d];\n", isa->max_nr_words); | |
594 | /* define an entry for any applicable cache rules */ | |
595 | for (cache_rule = cache_rules; | |
596 | cache_rule != NULL; | |
597 | cache_rule = cache_rule->next) | |
598 | { | |
599 | /* nb - sort of correct - should really check against | |
600 | individual instructions */ | |
601 | if (filter_is_subset (format->fields, cache_rule->original_fields)) | |
602 | { | |
603 | char *memb; | |
604 | lf_printf (file, "%s %s;", | |
605 | (cache_rule->type == NULL | |
606 | ? "unsigned" | |
607 | : cache_rule->type), | |
608 | cache_rule->name); | |
609 | lf_printf (file, " /*"); | |
610 | for (memb = filter_next (cache_rule->original_fields, ""); | |
611 | memb != NULL; | |
612 | memb = filter_next (cache_rule->original_fields, memb)) | |
613 | { | |
614 | lf_printf (file, " %s", memb); | |
615 | } | |
616 | lf_printf (file, " */\n"); | |
617 | } | |
618 | } | |
619 | /* define an entry for any fields not covered by a cache rule */ | |
620 | for (field = filter_next (format->fields, ""); | |
621 | field != NULL; | |
622 | field = filter_next (format->fields, field)) | |
623 | { | |
624 | cache_entry *cache_rule; | |
625 | int found_rule = 0; | |
626 | for (cache_rule = cache_rules; | |
627 | cache_rule != NULL; | |
628 | cache_rule = cache_rule->next) | |
629 | { | |
630 | if (strcmp (cache_rule->name, field) == 0) | |
631 | { | |
632 | found_rule = 1; | |
633 | break; | |
634 | } | |
635 | } | |
636 | if (!found_rule) | |
637 | lf_printf (file, "unsigned %s; /* default */\n", field); | |
638 | } | |
639 | } | |
640 | lf_indent (file, -2); | |
641 | lf_printf (file, "} %s;\n", format->name); | |
642 | } | |
643 | lf_indent (file, -2); | |
644 | lf_printf (file, "} crack;\n"); | |
645 | } | |
646 | lf_indent (file, -2); | |
647 | lf_printf (file, "} %sidecode_cache;\n", options.module.global.prefix.l); | |
648 | } | |
649 | else | |
650 | { | |
651 | /* alernativly, since no cache, emit a dummy definition for | |
652 | idecode_cache so that code refering to the type can still compile */ | |
653 | lf_printf(file, "typedef void %sidecode_cache;\n", | |
654 | options.module.global.prefix.l); | |
655 | } | |
656 | lf_printf (file, "\n"); | |
657 | } | |
658 | ||
659 | ||
660 | ||
661 | static void | |
662 | print_icache_function (lf *file, | |
663 | insn_entry *instruction, | |
664 | opcode_bits *expanded_bits, | |
665 | insn_opcodes *opcodes, | |
666 | cache_entry *cache_rules, | |
667 | int nr_prefetched_words) | |
668 | { | |
669 | int indent; | |
670 | ||
671 | /* generate code to enter decoded instruction into the icache */ | |
672 | lf_printf(file, "\n"); | |
673 | lf_print__function_type_function (file, print_icache_function_type, | |
674 | "EXTERN_ICACHE", "\n"); | |
675 | indent = print_function_name (file, | |
676 | instruction->name, | |
677 | instruction->format_name, | |
678 | NULL, | |
679 | expanded_bits, | |
680 | function_name_prefix_icache); | |
681 | indent += lf_printf (file, " "); | |
682 | lf_indent (file, +indent); | |
683 | lf_printf (file, "("); | |
684 | print_icache_function_formal (file, nr_prefetched_words); | |
685 | lf_printf (file, ")\n"); | |
686 | lf_indent (file, -indent); | |
687 | ||
688 | /* function header */ | |
689 | lf_printf (file, "{\n"); | |
690 | lf_indent (file, +2); | |
691 | ||
692 | print_my_defines (file, | |
693 | instruction->name, | |
694 | instruction->format_name, | |
695 | expanded_bits); | |
696 | print_itrace (file, instruction, 1/*putting-value-in-cache*/); | |
697 | ||
698 | print_idecode_validate (file, instruction, opcodes); | |
699 | ||
700 | lf_printf (file, "\n"); | |
701 | lf_printf (file, "{\n"); | |
702 | lf_indent (file, +2); | |
703 | if (options.gen.semantic_icache) | |
704 | lf_printf (file, "unsigned_word nia;\n"); | |
705 | print_icache_body (file, | |
706 | instruction, | |
707 | expanded_bits, | |
708 | cache_rules, | |
709 | (options.gen.direct_access | |
710 | ? define_variables | |
711 | : declare_variables), | |
712 | (options.gen.semantic_icache | |
713 | ? both_values_and_icache | |
714 | : put_values_in_icache), | |
715 | nr_prefetched_words); | |
716 | ||
717 | lf_printf (file, "\n"); | |
718 | lf_printf (file, "cache_entry->address = cia;\n"); | |
719 | lf_printf (file, "cache_entry->semantic = "); | |
720 | print_function_name (file, | |
721 | instruction->name, | |
722 | instruction->format_name, | |
723 | NULL, | |
724 | expanded_bits, | |
725 | function_name_prefix_semantics); | |
726 | lf_printf (file, ";\n"); | |
727 | lf_printf (file, "\n"); | |
728 | ||
729 | if (options.gen.semantic_icache) { | |
730 | lf_printf (file, "/* semantic routine */\n"); | |
731 | print_semantic_body (file, | |
732 | instruction, | |
733 | expanded_bits, | |
734 | opcodes); | |
735 | lf_printf (file, "return nia;\n"); | |
736 | } | |
737 | ||
738 | if (!options.gen.semantic_icache) | |
739 | { | |
740 | lf_printf (file, "/* return the function proper */\n"); | |
741 | lf_printf (file, "return "); | |
742 | print_function_name (file, | |
743 | instruction->name, | |
744 | instruction->format_name, | |
745 | NULL, | |
746 | expanded_bits, | |
747 | function_name_prefix_semantics); | |
748 | lf_printf (file, ";\n"); | |
749 | } | |
750 | ||
751 | if (options.gen.direct_access) | |
752 | { | |
753 | print_icache_body (file, | |
754 | instruction, | |
755 | expanded_bits, | |
756 | cache_rules, | |
757 | undef_variables, | |
758 | (options.gen.semantic_icache | |
759 | ? both_values_and_icache | |
760 | : put_values_in_icache), | |
761 | nr_prefetched_words); | |
762 | } | |
763 | ||
764 | lf_indent (file, -2); | |
765 | lf_printf (file, "}\n"); | |
766 | lf_indent (file, -2); | |
767 | lf_printf (file, "}\n"); | |
768 | } | |
769 | ||
770 | ||
771 | void | |
772 | print_icache_definition (lf *file, | |
773 | insn_entry *insn, | |
774 | opcode_bits *expanded_bits, | |
775 | insn_opcodes *opcodes, | |
776 | cache_entry *cache_rules, | |
777 | int nr_prefetched_words) | |
778 | { | |
779 | print_icache_function (file, | |
780 | insn, | |
781 | expanded_bits, | |
782 | opcodes, | |
783 | cache_rules, | |
784 | nr_prefetched_words); | |
785 | } | |
786 | ||
787 | ||
788 | ||
789 | void | |
790 | print_icache_internal_function_declaration (lf *file, | |
791 | function_entry *function, | |
792 | void *data) | |
793 | { | |
794 | ASSERT (options.gen.icache); | |
795 | if (function->is_internal) | |
796 | { | |
797 | lf_printf (file, "\n"); | |
798 | lf_print__function_type_function (file, print_icache_function_type, | |
799 | "INLINE_ICACHE", "\n"); | |
800 | print_function_name (file, | |
801 | function->name, | |
802 | NULL, | |
803 | NULL, | |
804 | NULL, | |
805 | function_name_prefix_icache); | |
806 | lf_printf (file, "\n("); | |
807 | print_icache_function_formal (file, 0); | |
808 | lf_printf (file, ");\n"); | |
809 | } | |
810 | } | |
811 | ||
812 | ||
813 | void | |
814 | print_icache_internal_function_definition (lf *file, | |
815 | function_entry *function, | |
816 | void *data) | |
817 | { | |
818 | ASSERT (options.gen.icache); | |
819 | if (function->is_internal) | |
820 | { | |
821 | lf_printf (file, "\n"); | |
822 | lf_print__function_type_function (file, print_icache_function_type, | |
823 | "INLINE_ICACHE", "\n"); | |
824 | print_function_name (file, | |
825 | function->name, | |
826 | NULL, | |
827 | NULL, | |
828 | NULL, | |
829 | function_name_prefix_icache); | |
830 | lf_printf (file, "\n("); | |
831 | print_icache_function_formal (file, 0); | |
832 | lf_printf (file, ")\n"); | |
833 | lf_printf (file, "{\n"); | |
834 | lf_indent (file, +2); | |
835 | lf_printf (file, "/* semantic routine */\n"); | |
836 | if (options.gen.semantic_icache) | |
837 | { | |
838 | lf_print__line_ref (file, function->code->line); | |
839 | table_print_code (file, function->code); | |
840 | lf_printf (file, "error (\"Internal function must longjump\\n\");\n"); | |
841 | lf_printf (file, "return 0;\n"); | |
842 | } | |
843 | else | |
844 | { | |
845 | lf_printf (file, "return "); | |
846 | print_function_name (file, | |
847 | function->name, | |
848 | NULL, | |
849 | NULL, | |
850 | NULL, | |
851 | function_name_prefix_semantics); | |
852 | lf_printf (file, ";\n"); | |
853 | } | |
854 | ||
855 | lf_print__internal_ref (file); | |
856 | lf_indent (file, -2); | |
857 | lf_printf (file, "}\n"); | |
858 | } | |
859 | } |