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feaee4bd AC |
1 | /* The IGEN simulator generator for GDB, the GNU Debugger. |
2 | ||
3666a048 | 3 | Copyright 2002-2021 Free Software Foundation, Inc. |
feaee4bd AC |
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 | |
4744ac1b | 11 | the Free Software Foundation; either version 3 of the License, or |
feaee4bd AC |
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 | |
4744ac1b | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 21 | |
3d52735b | 22 | #include <stdlib.h> |
c906108c SS |
23 | |
24 | #include "misc.h" | |
25 | #include "lf.h" | |
26 | #include "table.h" | |
27 | #include "filter.h" | |
28 | #include "igen.h" | |
29 | ||
30 | #include "ld-insn.h" | |
31 | #include "ld-decode.h" | |
32 | ||
33 | #include "gen.h" | |
34 | ||
35 | #include "gen-semantics.h" | |
36 | #include "gen-idecode.h" | |
37 | #include "gen-icache.h" | |
38 | ||
39 | ||
40 | ||
41 | static void | |
42 | print_icache_function_header (lf *file, | |
43 | const char *basename, | |
44 | const char *format_name, | |
45 | opcode_bits *expanded_bits, | |
46 | int is_function_definition, | |
47 | int nr_prefetched_words) | |
48 | { | |
4e0bf4c4 | 49 | lf_printf (file, "\n"); |
c906108c SS |
50 | lf_print__function_type_function (file, print_icache_function_type, |
51 | "EXTERN_ICACHE", " "); | |
52 | print_function_name (file, | |
53 | basename, format_name, NULL, | |
4e0bf4c4 | 54 | expanded_bits, function_name_prefix_icache); |
c906108c SS |
55 | lf_printf (file, "\n("); |
56 | print_icache_function_formal (file, nr_prefetched_words); | |
57 | lf_printf (file, ")"); | |
58 | if (!is_function_definition) | |
59 | lf_printf (file, ";"); | |
60 | lf_printf (file, "\n"); | |
61 | } | |
62 | ||
63 | ||
64 | void | |
65 | print_icache_declaration (lf *file, | |
4e0bf4c4 | 66 | insn_entry * insn, |
c906108c | 67 | opcode_bits *expanded_bits, |
4e0bf4c4 | 68 | insn_opcodes *opcodes, int nr_prefetched_words) |
c906108c SS |
69 | { |
70 | print_icache_function_header (file, | |
71 | insn->name, | |
72 | insn->format_name, | |
73 | expanded_bits, | |
4e0bf4c4 | 74 | 0 /* is not function definition */ , |
c906108c SS |
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); | |
4e0bf4c4 | 99 | |
c906108c SS |
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) | |
4e0bf4c4 | 129 | ? declare_variables : what_to_declare); |
c906108c SS |
130 | } |
131 | else | |
132 | return; | |
133 | break; | |
78e731cd | 134 | default: |
4e0bf4c4 | 135 | abort (); /* Bad switch. */ |
c906108c | 136 | } |
4e0bf4c4 | 137 | |
c906108c SS |
138 | /* For the type, default to a simple unsigned */ |
139 | if (entry_type == NULL || strlen (entry_type) == 0) | |
140 | entry_type = "unsigned"; | |
4e0bf4c4 | 141 | |
c906108c SS |
142 | /* look through the set of expanded sub fields to see if this field |
143 | has been given a constant value */ | |
4e0bf4c4 | 144 | for (bits = expanded_bits; bits != NULL; bits = bits->next) |
c906108c SS |
145 | { |
146 | if (bits->field == cur_field) | |
147 | break; | |
148 | } | |
4e0bf4c4 | 149 | |
c906108c SS |
150 | /* Define a storage area for the cache element */ |
151 | switch (what_to_declare) | |
152 | { | |
153 | case undef_variables: | |
154 | /* We've finished with the #define value - destory it */ | |
155 | lf_indent_suppress (file); | |
156 | lf_printf (file, "#undef %s\n", entry_name); | |
157 | return; | |
158 | case define_variables: | |
159 | /* Using direct access for this entry, clear any prior | |
160 | definition, then define it */ | |
161 | lf_indent_suppress (file); | |
162 | lf_printf (file, "#undef %s\n", entry_name); | |
163 | /* Don't type cast pointer types! */ | |
164 | lf_indent_suppress (file); | |
165 | if (strchr (entry_type, '*') != NULL) | |
166 | lf_printf (file, "#define %s (", entry_name); | |
167 | else | |
168 | lf_printf (file, "#define %s ((%s) ", entry_name, entry_type); | |
169 | break; | |
170 | case declare_variables: | |
171 | /* using variables to define the value */ | |
172 | if (line != NULL) | |
173 | lf_print__line_ref (file, line); | |
174 | lf_printf (file, "%s const %s UNUSED = ", entry_type, entry_name); | |
175 | break; | |
176 | } | |
4e0bf4c4 AC |
177 | |
178 | ||
c906108c SS |
179 | /* define a value for that storage area as determined by what is in |
180 | the cache */ | |
181 | if (bits != NULL | |
182 | && single_insn_field != NULL | |
183 | && strcmp (entry_name, single_insn_field) == 0 | |
184 | && strcmp (entry_name, cur_field->val_string) == 0 | |
185 | && ((bits->opcode->is_boolean && bits->value == 0) | |
186 | || (!bits->opcode->is_boolean))) | |
187 | { | |
188 | /* The cache rule is specifying what to do with a simple | |
189 | instruction field. | |
4e0bf4c4 AC |
190 | |
191 | Because of instruction expansion, the field is either a | |
192 | constant value or equal to the specified constant (boolean | |
193 | comparison). (The latter indicated by bits->value == 0). | |
194 | ||
c906108c SS |
195 | The case of a field not being equal to the specified boolean |
196 | value is handled later. */ | |
197 | expression = "constant field"; | |
198 | ASSERT (bits->field == cur_field); | |
199 | if (bits->opcode->is_boolean) | |
200 | { | |
201 | ASSERT (bits->value == 0); | |
202 | lf_printf (file, "%d", bits->opcode->boolean_constant); | |
203 | } | |
204 | else if (bits->opcode->last < bits->field->last) | |
205 | { | |
206 | lf_printf (file, "%d", | |
207 | bits->value << (bits->field->last - bits->opcode->last)); | |
208 | } | |
209 | else | |
210 | { | |
211 | lf_printf (file, "%d", bits->value); | |
212 | } | |
213 | } | |
214 | else if (bits != NULL | |
215 | && single_insn_field != NULL | |
216 | && strncmp (entry_name, | |
217 | single_insn_field, | |
218 | strlen (single_insn_field)) == 0 | |
219 | && strncmp (entry_name + strlen (single_insn_field), | |
220 | "_is_", | |
221 | strlen ("_is_")) == 0 | |
222 | && ((bits->opcode->is_boolean | |
4e0bf4c4 AC |
223 | && ((unsigned) |
224 | atol (entry_name + strlen (single_insn_field) + | |
225 | strlen ("_is_")) == bits->opcode->boolean_constant)) | |
c906108c SS |
226 | || (!bits->opcode->is_boolean))) |
227 | { | |
228 | /* The cache rule defines an entry for the comparison between a | |
4e0bf4c4 AC |
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. */ | |
c906108c SS |
232 | expression = "constant compare"; |
233 | if (bits->opcode->is_boolean) | |
234 | { | |
235 | lf_printf (file, "%d /* %s == %d */", | |
236 | bits->value == 0, | |
4e0bf4c4 | 237 | single_insn_field, bits->opcode->boolean_constant); |
c906108c SS |
238 | } |
239 | else if (bits->opcode->last < bits->field->last) | |
240 | { | |
241 | lf_printf (file, "%d /* %s == %d */", | |
4e0bf4c4 AC |
242 | (atol |
243 | (entry_name + strlen (single_insn_field) + | |
244 | strlen ("_is_")) == | |
245 | (bits-> | |
246 | value << (bits->field->last - bits->opcode->last))), | |
c906108c | 247 | single_insn_field, |
4e0bf4c4 AC |
248 | (bits-> |
249 | value << (bits->field->last - bits->opcode->last))); | |
c906108c SS |
250 | } |
251 | else | |
252 | { | |
253 | lf_printf (file, "%d /* %s == %d */", | |
4e0bf4c4 AC |
254 | (atol |
255 | (entry_name + strlen (single_insn_field) + | |
256 | strlen ("_is_")) == bits->value), single_insn_field, | |
c906108c SS |
257 | bits->value); |
258 | } | |
259 | } | |
260 | else | |
261 | { | |
262 | /* put the field in the local variable, possibly also enter it | |
4e0bf4c4 | 263 | into the cache */ |
c906108c SS |
264 | expression = "extraction"; |
265 | /* handle the cache */ | |
266 | if ((what_to_do & get_values_from_icache) | |
267 | || (what_to_do & put_values_in_icache)) | |
268 | { | |
269 | lf_printf (file, "cache_entry->crack.%s.%s", | |
4e0bf4c4 AC |
270 | format_name, entry_name); |
271 | if (what_to_do & put_values_in_icache) /* also put it in the cache? */ | |
c906108c SS |
272 | { |
273 | lf_printf (file, " = "); | |
274 | } | |
275 | } | |
276 | if ((what_to_do & put_values_in_icache) | |
277 | || what_to_do == do_not_use_icache) | |
278 | { | |
279 | if (cur_field != NULL) | |
280 | { | |
281 | if (entry_expression != NULL && strlen (entry_expression) > 0) | |
4e0bf4c4 AC |
282 | error (line, |
283 | "Instruction field entry with nonempty expression\n"); | |
284 | if (cur_field->first == 0 | |
285 | && cur_field->last == options.insn_bit_size - 1) | |
286 | lf_printf (file, "(instruction_%d)", cur_field->word_nr); | |
c906108c SS |
287 | else if (cur_field->last == options.insn_bit_size - 1) |
288 | lf_printf (file, "MASKED%d (instruction_%d, %d, %d)", | |
289 | options.insn_bit_size, | |
290 | cur_field->word_nr, | |
291 | i2target (options.hi_bit_nr, cur_field->first), | |
292 | i2target (options.hi_bit_nr, cur_field->last)); | |
293 | else | |
294 | lf_printf (file, "EXTRACTED%d (instruction_%d, %d, %d)", | |
295 | options.insn_bit_size, | |
296 | cur_field->word_nr, | |
297 | i2target (options.hi_bit_nr, cur_field->first), | |
298 | i2target (options.hi_bit_nr, cur_field->last)); | |
299 | } | |
300 | else | |
301 | { | |
302 | lf_printf (file, "%s", entry_expression); | |
303 | } | |
304 | } | |
305 | } | |
4e0bf4c4 | 306 | |
c906108c SS |
307 | switch (what_to_declare) |
308 | { | |
309 | case define_variables: | |
310 | lf_printf (file, ")"); | |
311 | break; | |
312 | case undef_variables: | |
313 | break; | |
314 | case declare_variables: | |
315 | lf_printf (file, ";"); | |
316 | break; | |
317 | } | |
318 | ||
319 | ASSERT (reason != NULL && expression != NULL); | |
320 | lf_printf (file, " /* %s - %s */\n", reason, expression); | |
321 | } | |
322 | ||
323 | ||
324 | void | |
325 | print_icache_body (lf *file, | |
4e0bf4c4 | 326 | insn_entry * instruction, |
c906108c SS |
327 | opcode_bits *expanded_bits, |
328 | cache_entry *cache_rules, | |
329 | icache_decl_type what_to_declare, | |
4e0bf4c4 | 330 | icache_body_type what_to_do, int nr_prefetched_words) |
c906108c SS |
331 | { |
332 | /* extract instruction fields */ | |
333 | lf_printf (file, "/* Extraction: %s\n", instruction->name); | |
334 | lf_printf (file, " "); | |
335 | switch (what_to_declare) | |
336 | { | |
337 | case define_variables: | |
338 | lf_printf (file, "#define"); | |
339 | break; | |
340 | case declare_variables: | |
341 | lf_printf (file, "declare"); | |
342 | break; | |
343 | case undef_variables: | |
344 | lf_printf (file, "#undef"); | |
345 | break; | |
346 | } | |
347 | lf_printf (file, " "); | |
348 | switch (what_to_do) | |
349 | { | |
350 | case get_values_from_icache: | |
351 | lf_printf (file, "get-values-from-icache"); | |
352 | break; | |
353 | case put_values_in_icache: | |
354 | lf_printf (file, "put-values-in-icache"); | |
355 | break; | |
356 | case both_values_and_icache: | |
357 | lf_printf (file, "get-values-from-icache|put-values-in-icache"); | |
358 | break; | |
359 | case do_not_use_icache: | |
360 | lf_printf (file, "do-not-use-icache"); | |
361 | break; | |
362 | } | |
363 | lf_printf (file, "\n "); | |
364 | print_insn_words (file, instruction); | |
4e0bf4c4 AC |
365 | lf_printf (file, " */\n"); |
366 | ||
c906108c SS |
367 | /* pass zero - fetch from memory any missing instructions. |
368 | ||
369 | Some of the instructions will have already been fetched (in the | |
370 | instruction array), others will still need fetching. */ | |
371 | switch (what_to_do) | |
372 | { | |
373 | case get_values_from_icache: | |
374 | break; | |
375 | case put_values_in_icache: | |
376 | case both_values_and_icache: | |
377 | case do_not_use_icache: | |
378 | { | |
379 | int word_nr; | |
380 | switch (what_to_declare) | |
381 | { | |
382 | case undef_variables: | |
383 | break; | |
384 | case define_variables: | |
385 | case declare_variables: | |
386 | for (word_nr = nr_prefetched_words; | |
4e0bf4c4 | 387 | word_nr < instruction->nr_words; word_nr++) |
c906108c SS |
388 | { |
389 | /* FIXME - should be using print_icache_extraction? */ | |
4e0bf4c4 AC |
390 | lf_printf (file, |
391 | "%sinstruction_word instruction_%d UNUSED = ", | |
392 | options.module.global.prefix.l, word_nr); | |
c906108c SS |
393 | lf_printf (file, "IMEM%d_IMMED (cia, %d)", |
394 | options.insn_bit_size, word_nr); | |
395 | lf_printf (file, ";\n"); | |
396 | } | |
397 | } | |
398 | } | |
399 | } | |
400 | ||
401 | /* if putting the instruction words in the cache, define references | |
402 | for them */ | |
4e0bf4c4 AC |
403 | if (options.gen.insn_in_icache) |
404 | { | |
405 | /* FIXME: is the instruction_word type correct? */ | |
406 | print_icache_extraction (file, instruction->format_name, cache_value, "insn", /* name */ | |
407 | "instruction_word", /* type */ | |
408 | "instruction", /* expression */ | |
409 | NULL, /* origin */ | |
410 | NULL, /* line */ | |
411 | NULL, NULL, what_to_declare, what_to_do); | |
412 | } | |
413 | lf_printf (file, "\n"); | |
c906108c SS |
414 | |
415 | /* pass one - process instruction fields. | |
416 | ||
417 | If there is no cache rule, the default is to enter the field into | |
418 | the cache */ | |
419 | { | |
420 | insn_word_entry *word; | |
4e0bf4c4 | 421 | for (word = instruction->words; word != NULL; word = word->next) |
c906108c SS |
422 | { |
423 | insn_field_entry *cur_field; | |
424 | for (cur_field = word->first; | |
425 | cur_field->first < options.insn_bit_size; | |
426 | cur_field = cur_field->next) | |
427 | { | |
af342558 HPN |
428 | /* Always expand named fields (even if constant), so |
429 | references are valid. */ | |
c906108c SS |
430 | if (cur_field->type == insn_field_string) |
431 | { | |
432 | cache_entry *cache_rule; | |
433 | cache_entry_type value_type = cache_value; | |
434 | line_ref *value_line = instruction->line; | |
435 | /* check the cache table to see if it contains a rule | |
436 | overriding the default cache action for an | |
437 | instruction field */ | |
438 | for (cache_rule = cache_rules; | |
4e0bf4c4 | 439 | cache_rule != NULL; cache_rule = cache_rule->next) |
c906108c SS |
440 | { |
441 | if (filter_is_subset (instruction->field_names, | |
442 | cache_rule->original_fields) | |
4e0bf4c4 AC |
443 | && strcmp (cache_rule->name, |
444 | cur_field->val_string) == 0) | |
c906108c SS |
445 | { |
446 | value_type = cache_rule->entry_type; | |
447 | value_line = cache_rule->line; | |
448 | if (value_type == compute_value) | |
449 | { | |
450 | options.warning (cache_rule->line, | |
451 | "instruction field of type `compute' changed to `cache'\n"); | |
452 | cache_rule->entry_type = cache_value; | |
453 | } | |
454 | break; | |
455 | } | |
456 | } | |
457 | /* Define an entry for the field within the | |
4e0bf4c4 AC |
458 | instruction */ |
459 | print_icache_extraction (file, instruction->format_name, value_type, cur_field->val_string, /* name */ | |
460 | NULL, /* type */ | |
461 | NULL, /* expression */ | |
462 | cur_field->val_string, /* insn field */ | |
c906108c SS |
463 | value_line, |
464 | cur_field, | |
465 | expanded_bits, | |
4e0bf4c4 | 466 | what_to_declare, what_to_do); |
c906108c SS |
467 | } |
468 | } | |
469 | } | |
470 | } | |
471 | ||
472 | /* pass two - any cache fields not processed above */ | |
473 | { | |
474 | cache_entry *cache_rule; | |
475 | for (cache_rule = cache_rules; | |
4e0bf4c4 | 476 | cache_rule != NULL; cache_rule = cache_rule->next) |
c906108c SS |
477 | { |
478 | if (filter_is_subset (instruction->field_names, | |
479 | cache_rule->original_fields) | |
4e0bf4c4 | 480 | && !filter_is_member (instruction->field_names, cache_rule->name)) |
c906108c | 481 | { |
4e0bf4c4 AC |
482 | char *single_field = |
483 | filter_next (cache_rule->original_fields, ""); | |
484 | if (filter_next (cache_rule->original_fields, single_field) != | |
485 | NULL) | |
c906108c | 486 | single_field = NULL; |
4e0bf4c4 | 487 | print_icache_extraction (file, instruction->format_name, cache_rule->entry_type, cache_rule->name, cache_rule->type, cache_rule->expression, single_field, cache_rule->line, NULL, /* cur_field */ |
c906108c | 488 | expanded_bits, |
4e0bf4c4 | 489 | what_to_declare, what_to_do); |
c906108c SS |
490 | } |
491 | } | |
492 | } | |
493 | ||
494 | lf_print__internal_ref (file); | |
495 | } | |
496 | ||
497 | ||
498 | ||
499 | typedef struct _form_fields form_fields; | |
4e0bf4c4 AC |
500 | struct _form_fields |
501 | { | |
c906108c SS |
502 | char *name; |
503 | filter *fields; | |
504 | form_fields *next; | |
505 | }; | |
506 | ||
507 | static form_fields * | |
508 | insn_table_cache_fields (insn_table *isa) | |
509 | { | |
510 | form_fields *forms = NULL; | |
511 | insn_entry *insn; | |
4e0bf4c4 AC |
512 | for (insn = isa->insns; insn != NULL; insn = insn->next) |
513 | { | |
514 | form_fields **form = &forms; | |
515 | while (1) | |
516 | { | |
517 | if (*form == NULL) | |
518 | { | |
519 | /* new format name, add it */ | |
520 | form_fields *new_form = ZALLOC (form_fields); | |
521 | new_form->name = insn->format_name; | |
522 | filter_add (&new_form->fields, insn->field_names); | |
523 | *form = new_form; | |
524 | break; | |
525 | } | |
526 | else if (strcmp ((*form)->name, insn->format_name) == 0) | |
527 | { | |
528 | /* already present, add field names to the existing list */ | |
529 | filter_add (&(*form)->fields, insn->field_names); | |
530 | break; | |
531 | } | |
532 | form = &(*form)->next; | |
533 | } | |
534 | } | |
c906108c SS |
535 | return forms; |
536 | } | |
537 | ||
538 | ||
539 | ||
540 | extern void | |
4e0bf4c4 | 541 | print_icache_struct (lf *file, insn_table *isa, cache_entry *cache_rules) |
c906108c SS |
542 | { |
543 | /* Create a list of all the different instruction formats with their | |
544 | corresponding field names. */ | |
545 | form_fields *formats = insn_table_cache_fields (isa); | |
4e0bf4c4 | 546 | |
c906108c SS |
547 | lf_printf (file, "\n"); |
548 | lf_printf (file, "#define WITH_%sIDECODE_CACHE_SIZE %d\n", | |
549 | options.module.global.prefix.u, | |
550 | (options.gen.icache ? options.gen.icache_size : 0)); | |
551 | lf_printf (file, "\n"); | |
4e0bf4c4 | 552 | |
c906108c | 553 | /* create an instruction cache if being used */ |
4e0bf4c4 | 554 | if (options.gen.icache) |
c906108c | 555 | { |
4e0bf4c4 AC |
556 | lf_printf (file, "typedef struct _%sidecode_cache {\n", |
557 | options.module.global.prefix.l); | |
c906108c | 558 | lf_indent (file, +2); |
4e0bf4c4 AC |
559 | { |
560 | form_fields *format; | |
561 | lf_printf (file, "unsigned_word address;\n"); | |
562 | lf_printf (file, "void *semantic;\n"); | |
563 | lf_printf (file, "union {\n"); | |
564 | lf_indent (file, +2); | |
565 | for (format = formats; format != NULL; format = format->next) | |
c906108c | 566 | { |
4e0bf4c4 AC |
567 | lf_printf (file, "struct {\n"); |
568 | lf_indent (file, +2); | |
569 | { | |
570 | cache_entry *cache_rule; | |
571 | char *field; | |
572 | /* space for any instruction words */ | |
573 | if (options.gen.insn_in_icache) | |
574 | lf_printf (file, "instruction_word insn[%d];\n", | |
575 | isa->max_nr_words); | |
576 | /* define an entry for any applicable cache rules */ | |
577 | for (cache_rule = cache_rules; | |
578 | cache_rule != NULL; cache_rule = cache_rule->next) | |
579 | { | |
580 | /* nb - sort of correct - should really check against | |
581 | individual instructions */ | |
582 | if (filter_is_subset | |
583 | (format->fields, cache_rule->original_fields)) | |
584 | { | |
585 | char *memb; | |
586 | lf_printf (file, "%s %s;", | |
587 | (cache_rule->type == NULL | |
588 | ? "unsigned" | |
589 | : cache_rule->type), cache_rule->name); | |
590 | lf_printf (file, " /*"); | |
591 | for (memb = | |
592 | filter_next (cache_rule->original_fields, ""); | |
593 | memb != NULL; | |
594 | memb = | |
595 | filter_next (cache_rule->original_fields, memb)) | |
596 | { | |
597 | lf_printf (file, " %s", memb); | |
598 | } | |
599 | lf_printf (file, " */\n"); | |
600 | } | |
601 | } | |
602 | /* define an entry for any fields not covered by a cache rule */ | |
603 | for (field = filter_next (format->fields, ""); | |
604 | field != NULL; field = filter_next (format->fields, field)) | |
605 | { | |
606 | cache_entry *cache_rule; | |
607 | int found_rule = 0; | |
608 | for (cache_rule = cache_rules; | |
609 | cache_rule != NULL; cache_rule = cache_rule->next) | |
610 | { | |
611 | if (strcmp (cache_rule->name, field) == 0) | |
612 | { | |
613 | found_rule = 1; | |
614 | break; | |
615 | } | |
616 | } | |
617 | if (!found_rule) | |
618 | lf_printf (file, "unsigned %s; /* default */\n", field); | |
619 | } | |
620 | } | |
621 | lf_indent (file, -2); | |
622 | lf_printf (file, "} %s;\n", format->name); | |
c906108c | 623 | } |
4e0bf4c4 AC |
624 | lf_indent (file, -2); |
625 | lf_printf (file, "} crack;\n"); | |
626 | } | |
c906108c | 627 | lf_indent (file, -2); |
4e0bf4c4 AC |
628 | lf_printf (file, "} %sidecode_cache;\n", |
629 | options.module.global.prefix.l); | |
c906108c | 630 | } |
c906108c SS |
631 | else |
632 | { | |
633 | /* alernativly, since no cache, emit a dummy definition for | |
4e0bf4c4 AC |
634 | idecode_cache so that code refering to the type can still compile */ |
635 | lf_printf (file, "typedef void %sidecode_cache;\n", | |
636 | options.module.global.prefix.l); | |
c906108c SS |
637 | } |
638 | lf_printf (file, "\n"); | |
639 | } | |
640 | ||
641 | ||
642 | ||
643 | static void | |
644 | print_icache_function (lf *file, | |
4e0bf4c4 | 645 | insn_entry * instruction, |
c906108c SS |
646 | opcode_bits *expanded_bits, |
647 | insn_opcodes *opcodes, | |
4e0bf4c4 | 648 | cache_entry *cache_rules, int nr_prefetched_words) |
c906108c SS |
649 | { |
650 | int indent; | |
651 | ||
652 | /* generate code to enter decoded instruction into the icache */ | |
4e0bf4c4 | 653 | lf_printf (file, "\n"); |
c906108c SS |
654 | lf_print__function_type_function (file, print_icache_function_type, |
655 | "EXTERN_ICACHE", "\n"); | |
656 | indent = print_function_name (file, | |
657 | instruction->name, | |
658 | instruction->format_name, | |
659 | NULL, | |
4e0bf4c4 | 660 | expanded_bits, function_name_prefix_icache); |
c906108c SS |
661 | indent += lf_printf (file, " "); |
662 | lf_indent (file, +indent); | |
663 | lf_printf (file, "("); | |
664 | print_icache_function_formal (file, nr_prefetched_words); | |
665 | lf_printf (file, ")\n"); | |
666 | lf_indent (file, -indent); | |
4e0bf4c4 | 667 | |
c906108c SS |
668 | /* function header */ |
669 | lf_printf (file, "{\n"); | |
670 | lf_indent (file, +2); | |
4e0bf4c4 | 671 | |
c906108c SS |
672 | print_my_defines (file, |
673 | instruction->name, | |
4e0bf4c4 AC |
674 | instruction->format_name, expanded_bits); |
675 | print_itrace (file, instruction, 1 /*putting-value-in-cache */ ); | |
676 | ||
c906108c | 677 | print_idecode_validate (file, instruction, opcodes); |
4e0bf4c4 | 678 | |
c906108c SS |
679 | lf_printf (file, "\n"); |
680 | lf_printf (file, "{\n"); | |
681 | lf_indent (file, +2); | |
682 | if (options.gen.semantic_icache) | |
683 | lf_printf (file, "unsigned_word nia;\n"); | |
684 | print_icache_body (file, | |
685 | instruction, | |
686 | expanded_bits, | |
687 | cache_rules, | |
688 | (options.gen.direct_access | |
689 | ? define_variables | |
690 | : declare_variables), | |
691 | (options.gen.semantic_icache | |
692 | ? both_values_and_icache | |
4e0bf4c4 AC |
693 | : put_values_in_icache), nr_prefetched_words); |
694 | ||
c906108c SS |
695 | lf_printf (file, "\n"); |
696 | lf_printf (file, "cache_entry->address = cia;\n"); | |
697 | lf_printf (file, "cache_entry->semantic = "); | |
698 | print_function_name (file, | |
699 | instruction->name, | |
700 | instruction->format_name, | |
4e0bf4c4 | 701 | NULL, expanded_bits, function_name_prefix_semantics); |
c906108c SS |
702 | lf_printf (file, ";\n"); |
703 | lf_printf (file, "\n"); | |
704 | ||
4e0bf4c4 AC |
705 | if (options.gen.semantic_icache) |
706 | { | |
707 | lf_printf (file, "/* semantic routine */\n"); | |
708 | print_semantic_body (file, instruction, expanded_bits, opcodes); | |
709 | lf_printf (file, "return nia;\n"); | |
710 | } | |
711 | ||
c906108c SS |
712 | if (!options.gen.semantic_icache) |
713 | { | |
714 | lf_printf (file, "/* return the function proper */\n"); | |
715 | lf_printf (file, "return "); | |
716 | print_function_name (file, | |
717 | instruction->name, | |
718 | instruction->format_name, | |
719 | NULL, | |
4e0bf4c4 | 720 | expanded_bits, function_name_prefix_semantics); |
c906108c SS |
721 | lf_printf (file, ";\n"); |
722 | } | |
4e0bf4c4 | 723 | |
c906108c SS |
724 | if (options.gen.direct_access) |
725 | { | |
726 | print_icache_body (file, | |
727 | instruction, | |
728 | expanded_bits, | |
729 | cache_rules, | |
730 | undef_variables, | |
731 | (options.gen.semantic_icache | |
732 | ? both_values_and_icache | |
4e0bf4c4 | 733 | : put_values_in_icache), nr_prefetched_words); |
c906108c | 734 | } |
4e0bf4c4 | 735 | |
c906108c SS |
736 | lf_indent (file, -2); |
737 | lf_printf (file, "}\n"); | |
738 | lf_indent (file, -2); | |
739 | lf_printf (file, "}\n"); | |
740 | } | |
741 | ||
742 | ||
743 | void | |
744 | print_icache_definition (lf *file, | |
4e0bf4c4 | 745 | insn_entry * insn, |
c906108c SS |
746 | opcode_bits *expanded_bits, |
747 | insn_opcodes *opcodes, | |
4e0bf4c4 | 748 | cache_entry *cache_rules, int nr_prefetched_words) |
c906108c SS |
749 | { |
750 | print_icache_function (file, | |
751 | insn, | |
752 | expanded_bits, | |
4e0bf4c4 | 753 | opcodes, cache_rules, nr_prefetched_words); |
c906108c SS |
754 | } |
755 | ||
756 | ||
757 | ||
758 | void | |
759 | print_icache_internal_function_declaration (lf *file, | |
4e0bf4c4 | 760 | function_entry * function, |
c906108c SS |
761 | void *data) |
762 | { | |
763 | ASSERT (options.gen.icache); | |
764 | if (function->is_internal) | |
765 | { | |
766 | lf_printf (file, "\n"); | |
767 | lf_print__function_type_function (file, print_icache_function_type, | |
768 | "INLINE_ICACHE", "\n"); | |
769 | print_function_name (file, | |
770 | function->name, | |
4e0bf4c4 | 771 | NULL, NULL, NULL, function_name_prefix_icache); |
c906108c SS |
772 | lf_printf (file, "\n("); |
773 | print_icache_function_formal (file, 0); | |
774 | lf_printf (file, ");\n"); | |
775 | } | |
776 | } | |
777 | ||
778 | ||
779 | void | |
780 | print_icache_internal_function_definition (lf *file, | |
4e0bf4c4 | 781 | function_entry * function, |
c906108c SS |
782 | void *data) |
783 | { | |
784 | ASSERT (options.gen.icache); | |
785 | if (function->is_internal) | |
786 | { | |
787 | lf_printf (file, "\n"); | |
788 | lf_print__function_type_function (file, print_icache_function_type, | |
789 | "INLINE_ICACHE", "\n"); | |
790 | print_function_name (file, | |
791 | function->name, | |
4e0bf4c4 | 792 | NULL, NULL, NULL, function_name_prefix_icache); |
c906108c SS |
793 | lf_printf (file, "\n("); |
794 | print_icache_function_formal (file, 0); | |
795 | lf_printf (file, ")\n"); | |
796 | lf_printf (file, "{\n"); | |
797 | lf_indent (file, +2); | |
798 | lf_printf (file, "/* semantic routine */\n"); | |
799 | if (options.gen.semantic_icache) | |
800 | { | |
801 | lf_print__line_ref (file, function->code->line); | |
802 | table_print_code (file, function->code); | |
4e0bf4c4 AC |
803 | lf_printf (file, |
804 | "error (\"Internal function must longjump\\n\");\n"); | |
c906108c SS |
805 | lf_printf (file, "return 0;\n"); |
806 | } | |
807 | else | |
808 | { | |
809 | lf_printf (file, "return "); | |
810 | print_function_name (file, | |
811 | function->name, | |
812 | NULL, | |
4e0bf4c4 | 813 | NULL, NULL, function_name_prefix_semantics); |
c906108c SS |
814 | lf_printf (file, ";\n"); |
815 | } | |
4e0bf4c4 | 816 | |
c906108c SS |
817 | lf_print__internal_ref (file); |
818 | lf_indent (file, -2); | |
819 | lf_printf (file, "}\n"); | |
820 | } | |
821 | } |