Commit | Line | Data |
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feaee4bd AC |
1 | /* The IGEN simulator generator for GDB, the GNU Debugger. |
2 | ||
ecd75fc8 | 3 | Copyright 2002-2014 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 SS |
21 | |
22 | ||
23 | #include "misc.h" | |
24 | #include "lf.h" | |
25 | #include "table.h" | |
26 | #include "filter.h" | |
27 | #include "igen.h" | |
28 | ||
29 | #include "ld-insn.h" | |
30 | #include "ld-decode.h" | |
31 | ||
32 | #include "gen.h" | |
33 | ||
34 | #include "gen-semantics.h" | |
35 | #include "gen-idecode.h" | |
36 | #include "gen-icache.h" | |
37 | ||
38 | ||
39 | ||
40 | static void | |
41 | print_icache_function_header (lf *file, | |
42 | const char *basename, | |
43 | const char *format_name, | |
44 | opcode_bits *expanded_bits, | |
45 | int is_function_definition, | |
46 | int nr_prefetched_words) | |
47 | { | |
4e0bf4c4 | 48 | lf_printf (file, "\n"); |
c906108c SS |
49 | lf_print__function_type_function (file, print_icache_function_type, |
50 | "EXTERN_ICACHE", " "); | |
51 | print_function_name (file, | |
52 | basename, format_name, NULL, | |
4e0bf4c4 | 53 | expanded_bits, function_name_prefix_icache); |
c906108c SS |
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, | |
4e0bf4c4 | 65 | insn_entry * insn, |
c906108c | 66 | opcode_bits *expanded_bits, |
4e0bf4c4 | 67 | insn_opcodes *opcodes, int nr_prefetched_words) |
c906108c SS |
68 | { |
69 | print_icache_function_header (file, | |
70 | insn->name, | |
71 | insn->format_name, | |
72 | expanded_bits, | |
4e0bf4c4 | 73 | 0 /* is not function definition */ , |
c906108c SS |
74 | nr_prefetched_words); |
75 | } | |
76 | ||
77 | ||
78 | ||
79 | static void | |
80 | print_icache_extraction (lf *file, | |
81 | const char *format_name, | |
82 | cache_entry_type cache_type, | |
83 | const char *entry_name, | |
84 | const char *entry_type, | |
85 | const char *entry_expression, | |
86 | char *single_insn_field, | |
87 | line_ref *line, | |
88 | insn_field_entry *cur_field, | |
89 | opcode_bits *expanded_bits, | |
90 | icache_decl_type what_to_declare, | |
91 | icache_body_type what_to_do) | |
92 | { | |
93 | const char *expression; | |
94 | opcode_bits *bits; | |
95 | char *reason; | |
96 | ASSERT (format_name != NULL); | |
97 | ASSERT (entry_name != NULL); | |
4e0bf4c4 | 98 | |
c906108c SS |
99 | /* figure out exactly what should be going on here */ |
100 | switch (cache_type) | |
101 | { | |
102 | case scratch_value: | |
103 | if ((what_to_do & put_values_in_icache) | |
104 | || what_to_do == do_not_use_icache) | |
105 | { | |
106 | reason = "scratch"; | |
107 | what_to_do = do_not_use_icache; | |
108 | } | |
109 | else | |
110 | return; | |
111 | break; | |
112 | case compute_value: | |
113 | if ((what_to_do & get_values_from_icache) | |
114 | || what_to_do == do_not_use_icache) | |
115 | { | |
116 | reason = "compute"; | |
117 | what_to_do = do_not_use_icache; | |
118 | } | |
119 | else | |
120 | return; | |
121 | break; | |
122 | case cache_value: | |
123 | if ((what_to_declare != undef_variables) | |
124 | || !(what_to_do & put_values_in_icache)) | |
125 | { | |
126 | reason = "cache"; | |
127 | what_to_declare = ((what_to_do & put_values_in_icache) | |
4e0bf4c4 | 128 | ? declare_variables : what_to_declare); |
c906108c SS |
129 | } |
130 | else | |
131 | return; | |
132 | break; | |
78e731cd | 133 | default: |
4e0bf4c4 | 134 | abort (); /* Bad switch. */ |
c906108c | 135 | } |
4e0bf4c4 | 136 | |
c906108c SS |
137 | /* For the type, default to a simple unsigned */ |
138 | if (entry_type == NULL || strlen (entry_type) == 0) | |
139 | entry_type = "unsigned"; | |
4e0bf4c4 | 140 | |
c906108c SS |
141 | /* look through the set of expanded sub fields to see if this field |
142 | has been given a constant value */ | |
4e0bf4c4 | 143 | for (bits = expanded_bits; bits != NULL; bits = bits->next) |
c906108c SS |
144 | { |
145 | if (bits->field == cur_field) | |
146 | break; | |
147 | } | |
4e0bf4c4 | 148 | |
c906108c SS |
149 | /* Define a storage area for the cache element */ |
150 | switch (what_to_declare) | |
151 | { | |
152 | case undef_variables: | |
153 | /* We've finished with the #define value - destory it */ | |
154 | lf_indent_suppress (file); | |
155 | lf_printf (file, "#undef %s\n", entry_name); | |
156 | return; | |
157 | case define_variables: | |
158 | /* Using direct access for this entry, clear any prior | |
159 | definition, then define it */ | |
160 | lf_indent_suppress (file); | |
161 | lf_printf (file, "#undef %s\n", entry_name); | |
162 | /* Don't type cast pointer types! */ | |
163 | lf_indent_suppress (file); | |
164 | if (strchr (entry_type, '*') != NULL) | |
165 | lf_printf (file, "#define %s (", entry_name); | |
166 | else | |
167 | lf_printf (file, "#define %s ((%s) ", entry_name, entry_type); | |
168 | break; | |
169 | case declare_variables: | |
170 | /* using variables to define the value */ | |
171 | if (line != NULL) | |
172 | lf_print__line_ref (file, line); | |
173 | lf_printf (file, "%s const %s UNUSED = ", entry_type, entry_name); | |
174 | break; | |
175 | } | |
4e0bf4c4 AC |
176 | |
177 | ||
c906108c SS |
178 | /* define a value for that storage area as determined by what is in |
179 | the cache */ | |
180 | if (bits != NULL | |
181 | && single_insn_field != NULL | |
182 | && strcmp (entry_name, single_insn_field) == 0 | |
183 | && strcmp (entry_name, cur_field->val_string) == 0 | |
184 | && ((bits->opcode->is_boolean && bits->value == 0) | |
185 | || (!bits->opcode->is_boolean))) | |
186 | { | |
187 | /* The cache rule is specifying what to do with a simple | |
188 | instruction field. | |
4e0bf4c4 AC |
189 | |
190 | Because of instruction expansion, the field is either a | |
191 | constant value or equal to the specified constant (boolean | |
192 | comparison). (The latter indicated by bits->value == 0). | |
193 | ||
c906108c SS |
194 | The case of a field not being equal to the specified boolean |
195 | value is handled later. */ | |
196 | expression = "constant field"; | |
197 | ASSERT (bits->field == cur_field); | |
198 | if (bits->opcode->is_boolean) | |
199 | { | |
200 | ASSERT (bits->value == 0); | |
201 | lf_printf (file, "%d", bits->opcode->boolean_constant); | |
202 | } | |
203 | else if (bits->opcode->last < bits->field->last) | |
204 | { | |
205 | lf_printf (file, "%d", | |
206 | bits->value << (bits->field->last - bits->opcode->last)); | |
207 | } | |
208 | else | |
209 | { | |
210 | lf_printf (file, "%d", bits->value); | |
211 | } | |
212 | } | |
213 | else if (bits != NULL | |
214 | && single_insn_field != NULL | |
215 | && strncmp (entry_name, | |
216 | single_insn_field, | |
217 | strlen (single_insn_field)) == 0 | |
218 | && strncmp (entry_name + strlen (single_insn_field), | |
219 | "_is_", | |
220 | strlen ("_is_")) == 0 | |
221 | && ((bits->opcode->is_boolean | |
4e0bf4c4 AC |
222 | && ((unsigned) |
223 | atol (entry_name + strlen (single_insn_field) + | |
224 | strlen ("_is_")) == bits->opcode->boolean_constant)) | |
c906108c SS |
225 | || (!bits->opcode->is_boolean))) |
226 | { | |
227 | /* The cache rule defines an entry for the comparison between a | |
4e0bf4c4 AC |
228 | single instruction field and a constant. The value of the |
229 | comparison in someway matches that of the opcode field that | |
230 | was made constant through expansion. */ | |
c906108c SS |
231 | expression = "constant compare"; |
232 | if (bits->opcode->is_boolean) | |
233 | { | |
234 | lf_printf (file, "%d /* %s == %d */", | |
235 | bits->value == 0, | |
4e0bf4c4 | 236 | single_insn_field, bits->opcode->boolean_constant); |
c906108c SS |
237 | } |
238 | else if (bits->opcode->last < bits->field->last) | |
239 | { | |
240 | lf_printf (file, "%d /* %s == %d */", | |
4e0bf4c4 AC |
241 | (atol |
242 | (entry_name + strlen (single_insn_field) + | |
243 | strlen ("_is_")) == | |
244 | (bits-> | |
245 | value << (bits->field->last - bits->opcode->last))), | |
c906108c | 246 | single_insn_field, |
4e0bf4c4 AC |
247 | (bits-> |
248 | value << (bits->field->last - bits->opcode->last))); | |
c906108c SS |
249 | } |
250 | else | |
251 | { | |
252 | lf_printf (file, "%d /* %s == %d */", | |
4e0bf4c4 AC |
253 | (atol |
254 | (entry_name + strlen (single_insn_field) + | |
255 | strlen ("_is_")) == bits->value), single_insn_field, | |
c906108c SS |
256 | bits->value); |
257 | } | |
258 | } | |
259 | else | |
260 | { | |
261 | /* put the field in the local variable, possibly also enter it | |
4e0bf4c4 | 262 | into the cache */ |
c906108c SS |
263 | expression = "extraction"; |
264 | /* handle the cache */ | |
265 | if ((what_to_do & get_values_from_icache) | |
266 | || (what_to_do & put_values_in_icache)) | |
267 | { | |
268 | lf_printf (file, "cache_entry->crack.%s.%s", | |
4e0bf4c4 AC |
269 | format_name, entry_name); |
270 | if (what_to_do & put_values_in_icache) /* also put it in the cache? */ | |
c906108c SS |
271 | { |
272 | lf_printf (file, " = "); | |
273 | } | |
274 | } | |
275 | if ((what_to_do & put_values_in_icache) | |
276 | || what_to_do == do_not_use_icache) | |
277 | { | |
278 | if (cur_field != NULL) | |
279 | { | |
280 | if (entry_expression != NULL && strlen (entry_expression) > 0) | |
4e0bf4c4 AC |
281 | error (line, |
282 | "Instruction field entry with nonempty expression\n"); | |
283 | if (cur_field->first == 0 | |
284 | && cur_field->last == options.insn_bit_size - 1) | |
285 | lf_printf (file, "(instruction_%d)", cur_field->word_nr); | |
c906108c SS |
286 | else if (cur_field->last == options.insn_bit_size - 1) |
287 | lf_printf (file, "MASKED%d (instruction_%d, %d, %d)", | |
288 | options.insn_bit_size, | |
289 | cur_field->word_nr, | |
290 | i2target (options.hi_bit_nr, cur_field->first), | |
291 | i2target (options.hi_bit_nr, cur_field->last)); | |
292 | else | |
293 | lf_printf (file, "EXTRACTED%d (instruction_%d, %d, %d)", | |
294 | options.insn_bit_size, | |
295 | cur_field->word_nr, | |
296 | i2target (options.hi_bit_nr, cur_field->first), | |
297 | i2target (options.hi_bit_nr, cur_field->last)); | |
298 | } | |
299 | else | |
300 | { | |
301 | lf_printf (file, "%s", entry_expression); | |
302 | } | |
303 | } | |
304 | } | |
4e0bf4c4 | 305 | |
c906108c SS |
306 | switch (what_to_declare) |
307 | { | |
308 | case define_variables: | |
309 | lf_printf (file, ")"); | |
310 | break; | |
311 | case undef_variables: | |
312 | break; | |
313 | case declare_variables: | |
314 | lf_printf (file, ";"); | |
315 | break; | |
316 | } | |
317 | ||
318 | ASSERT (reason != NULL && expression != NULL); | |
319 | lf_printf (file, " /* %s - %s */\n", reason, expression); | |
320 | } | |
321 | ||
322 | ||
323 | void | |
324 | print_icache_body (lf *file, | |
4e0bf4c4 | 325 | insn_entry * instruction, |
c906108c SS |
326 | opcode_bits *expanded_bits, |
327 | cache_entry *cache_rules, | |
328 | icache_decl_type what_to_declare, | |
4e0bf4c4 | 329 | icache_body_type what_to_do, int nr_prefetched_words) |
c906108c SS |
330 | { |
331 | /* extract instruction fields */ | |
332 | lf_printf (file, "/* Extraction: %s\n", instruction->name); | |
333 | lf_printf (file, " "); | |
334 | switch (what_to_declare) | |
335 | { | |
336 | case define_variables: | |
337 | lf_printf (file, "#define"); | |
338 | break; | |
339 | case declare_variables: | |
340 | lf_printf (file, "declare"); | |
341 | break; | |
342 | case undef_variables: | |
343 | lf_printf (file, "#undef"); | |
344 | break; | |
345 | } | |
346 | lf_printf (file, " "); | |
347 | switch (what_to_do) | |
348 | { | |
349 | case get_values_from_icache: | |
350 | lf_printf (file, "get-values-from-icache"); | |
351 | break; | |
352 | case put_values_in_icache: | |
353 | lf_printf (file, "put-values-in-icache"); | |
354 | break; | |
355 | case both_values_and_icache: | |
356 | lf_printf (file, "get-values-from-icache|put-values-in-icache"); | |
357 | break; | |
358 | case do_not_use_icache: | |
359 | lf_printf (file, "do-not-use-icache"); | |
360 | break; | |
361 | } | |
362 | lf_printf (file, "\n "); | |
363 | print_insn_words (file, instruction); | |
4e0bf4c4 AC |
364 | lf_printf (file, " */\n"); |
365 | ||
c906108c SS |
366 | /* pass zero - fetch from memory any missing instructions. |
367 | ||
368 | Some of the instructions will have already been fetched (in the | |
369 | instruction array), others will still need fetching. */ | |
370 | switch (what_to_do) | |
371 | { | |
372 | case get_values_from_icache: | |
373 | break; | |
374 | case put_values_in_icache: | |
375 | case both_values_and_icache: | |
376 | case do_not_use_icache: | |
377 | { | |
378 | int word_nr; | |
379 | switch (what_to_declare) | |
380 | { | |
381 | case undef_variables: | |
382 | break; | |
383 | case define_variables: | |
384 | case declare_variables: | |
385 | for (word_nr = nr_prefetched_words; | |
4e0bf4c4 | 386 | word_nr < instruction->nr_words; word_nr++) |
c906108c SS |
387 | { |
388 | /* FIXME - should be using print_icache_extraction? */ | |
4e0bf4c4 AC |
389 | lf_printf (file, |
390 | "%sinstruction_word instruction_%d UNUSED = ", | |
391 | options.module.global.prefix.l, word_nr); | |
c906108c SS |
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 */ | |
4e0bf4c4 AC |
402 | if (options.gen.insn_in_icache) |
403 | { | |
404 | /* FIXME: is the instruction_word type correct? */ | |
405 | print_icache_extraction (file, instruction->format_name, cache_value, "insn", /* name */ | |
406 | "instruction_word", /* type */ | |
407 | "instruction", /* expression */ | |
408 | NULL, /* origin */ | |
409 | NULL, /* line */ | |
410 | NULL, NULL, what_to_declare, what_to_do); | |
411 | } | |
412 | lf_printf (file, "\n"); | |
c906108c SS |
413 | |
414 | /* pass one - process instruction fields. | |
415 | ||
416 | If there is no cache rule, the default is to enter the field into | |
417 | the cache */ | |
418 | { | |
419 | insn_word_entry *word; | |
4e0bf4c4 | 420 | for (word = instruction->words; word != NULL; word = word->next) |
c906108c SS |
421 | { |
422 | insn_field_entry *cur_field; | |
423 | for (cur_field = word->first; | |
424 | cur_field->first < options.insn_bit_size; | |
425 | cur_field = cur_field->next) | |
426 | { | |
af342558 HPN |
427 | /* Always expand named fields (even if constant), so |
428 | references are valid. */ | |
c906108c SS |
429 | if (cur_field->type == insn_field_string) |
430 | { | |
431 | cache_entry *cache_rule; | |
432 | cache_entry_type value_type = cache_value; | |
433 | line_ref *value_line = instruction->line; | |
434 | /* check the cache table to see if it contains a rule | |
435 | overriding the default cache action for an | |
436 | instruction field */ | |
437 | for (cache_rule = cache_rules; | |
4e0bf4c4 | 438 | cache_rule != NULL; cache_rule = cache_rule->next) |
c906108c SS |
439 | { |
440 | if (filter_is_subset (instruction->field_names, | |
441 | cache_rule->original_fields) | |
4e0bf4c4 AC |
442 | && strcmp (cache_rule->name, |
443 | cur_field->val_string) == 0) | |
c906108c SS |
444 | { |
445 | value_type = cache_rule->entry_type; | |
446 | value_line = cache_rule->line; | |
447 | if (value_type == compute_value) | |
448 | { | |
449 | options.warning (cache_rule->line, | |
450 | "instruction field of type `compute' changed to `cache'\n"); | |
451 | cache_rule->entry_type = cache_value; | |
452 | } | |
453 | break; | |
454 | } | |
455 | } | |
456 | /* Define an entry for the field within the | |
4e0bf4c4 AC |
457 | instruction */ |
458 | print_icache_extraction (file, instruction->format_name, value_type, cur_field->val_string, /* name */ | |
459 | NULL, /* type */ | |
460 | NULL, /* expression */ | |
461 | cur_field->val_string, /* insn field */ | |
c906108c SS |
462 | value_line, |
463 | cur_field, | |
464 | expanded_bits, | |
4e0bf4c4 | 465 | what_to_declare, what_to_do); |
c906108c SS |
466 | } |
467 | } | |
468 | } | |
469 | } | |
470 | ||
471 | /* pass two - any cache fields not processed above */ | |
472 | { | |
473 | cache_entry *cache_rule; | |
474 | for (cache_rule = cache_rules; | |
4e0bf4c4 | 475 | cache_rule != NULL; cache_rule = cache_rule->next) |
c906108c SS |
476 | { |
477 | if (filter_is_subset (instruction->field_names, | |
478 | cache_rule->original_fields) | |
4e0bf4c4 | 479 | && !filter_is_member (instruction->field_names, cache_rule->name)) |
c906108c | 480 | { |
4e0bf4c4 AC |
481 | char *single_field = |
482 | filter_next (cache_rule->original_fields, ""); | |
483 | if (filter_next (cache_rule->original_fields, single_field) != | |
484 | NULL) | |
c906108c | 485 | single_field = NULL; |
4e0bf4c4 | 486 | 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 | 487 | expanded_bits, |
4e0bf4c4 | 488 | what_to_declare, what_to_do); |
c906108c SS |
489 | } |
490 | } | |
491 | } | |
492 | ||
493 | lf_print__internal_ref (file); | |
494 | } | |
495 | ||
496 | ||
497 | ||
498 | typedef struct _form_fields form_fields; | |
4e0bf4c4 AC |
499 | struct _form_fields |
500 | { | |
c906108c SS |
501 | char *name; |
502 | filter *fields; | |
503 | form_fields *next; | |
504 | }; | |
505 | ||
506 | static form_fields * | |
507 | insn_table_cache_fields (insn_table *isa) | |
508 | { | |
509 | form_fields *forms = NULL; | |
510 | insn_entry *insn; | |
4e0bf4c4 AC |
511 | for (insn = isa->insns; insn != NULL; insn = insn->next) |
512 | { | |
513 | form_fields **form = &forms; | |
514 | while (1) | |
515 | { | |
516 | if (*form == NULL) | |
517 | { | |
518 | /* new format name, add it */ | |
519 | form_fields *new_form = ZALLOC (form_fields); | |
520 | new_form->name = insn->format_name; | |
521 | filter_add (&new_form->fields, insn->field_names); | |
522 | *form = new_form; | |
523 | break; | |
524 | } | |
525 | else if (strcmp ((*form)->name, insn->format_name) == 0) | |
526 | { | |
527 | /* already present, add field names to the existing list */ | |
528 | filter_add (&(*form)->fields, insn->field_names); | |
529 | break; | |
530 | } | |
531 | form = &(*form)->next; | |
532 | } | |
533 | } | |
c906108c SS |
534 | return forms; |
535 | } | |
536 | ||
537 | ||
538 | ||
539 | extern void | |
4e0bf4c4 | 540 | print_icache_struct (lf *file, insn_table *isa, cache_entry *cache_rules) |
c906108c SS |
541 | { |
542 | /* Create a list of all the different instruction formats with their | |
543 | corresponding field names. */ | |
544 | form_fields *formats = insn_table_cache_fields (isa); | |
4e0bf4c4 | 545 | |
c906108c SS |
546 | lf_printf (file, "\n"); |
547 | lf_printf (file, "#define WITH_%sIDECODE_CACHE_SIZE %d\n", | |
548 | options.module.global.prefix.u, | |
549 | (options.gen.icache ? options.gen.icache_size : 0)); | |
550 | lf_printf (file, "\n"); | |
4e0bf4c4 | 551 | |
c906108c | 552 | /* create an instruction cache if being used */ |
4e0bf4c4 | 553 | if (options.gen.icache) |
c906108c | 554 | { |
4e0bf4c4 AC |
555 | lf_printf (file, "typedef struct _%sidecode_cache {\n", |
556 | options.module.global.prefix.l); | |
c906108c | 557 | lf_indent (file, +2); |
4e0bf4c4 AC |
558 | { |
559 | form_fields *format; | |
560 | lf_printf (file, "unsigned_word address;\n"); | |
561 | lf_printf (file, "void *semantic;\n"); | |
562 | lf_printf (file, "union {\n"); | |
563 | lf_indent (file, +2); | |
564 | for (format = formats; format != NULL; format = format->next) | |
c906108c | 565 | { |
4e0bf4c4 AC |
566 | lf_printf (file, "struct {\n"); |
567 | lf_indent (file, +2); | |
568 | { | |
569 | cache_entry *cache_rule; | |
570 | char *field; | |
571 | /* space for any instruction words */ | |
572 | if (options.gen.insn_in_icache) | |
573 | lf_printf (file, "instruction_word insn[%d];\n", | |
574 | isa->max_nr_words); | |
575 | /* define an entry for any applicable cache rules */ | |
576 | for (cache_rule = cache_rules; | |
577 | cache_rule != NULL; cache_rule = cache_rule->next) | |
578 | { | |
579 | /* nb - sort of correct - should really check against | |
580 | individual instructions */ | |
581 | if (filter_is_subset | |
582 | (format->fields, cache_rule->original_fields)) | |
583 | { | |
584 | char *memb; | |
585 | lf_printf (file, "%s %s;", | |
586 | (cache_rule->type == NULL | |
587 | ? "unsigned" | |
588 | : cache_rule->type), cache_rule->name); | |
589 | lf_printf (file, " /*"); | |
590 | for (memb = | |
591 | filter_next (cache_rule->original_fields, ""); | |
592 | memb != NULL; | |
593 | memb = | |
594 | filter_next (cache_rule->original_fields, memb)) | |
595 | { | |
596 | lf_printf (file, " %s", memb); | |
597 | } | |
598 | lf_printf (file, " */\n"); | |
599 | } | |
600 | } | |
601 | /* define an entry for any fields not covered by a cache rule */ | |
602 | for (field = filter_next (format->fields, ""); | |
603 | field != NULL; field = filter_next (format->fields, field)) | |
604 | { | |
605 | cache_entry *cache_rule; | |
606 | int found_rule = 0; | |
607 | for (cache_rule = cache_rules; | |
608 | cache_rule != NULL; cache_rule = cache_rule->next) | |
609 | { | |
610 | if (strcmp (cache_rule->name, field) == 0) | |
611 | { | |
612 | found_rule = 1; | |
613 | break; | |
614 | } | |
615 | } | |
616 | if (!found_rule) | |
617 | lf_printf (file, "unsigned %s; /* default */\n", field); | |
618 | } | |
619 | } | |
620 | lf_indent (file, -2); | |
621 | lf_printf (file, "} %s;\n", format->name); | |
c906108c | 622 | } |
4e0bf4c4 AC |
623 | lf_indent (file, -2); |
624 | lf_printf (file, "} crack;\n"); | |
625 | } | |
c906108c | 626 | lf_indent (file, -2); |
4e0bf4c4 AC |
627 | lf_printf (file, "} %sidecode_cache;\n", |
628 | options.module.global.prefix.l); | |
c906108c | 629 | } |
c906108c SS |
630 | else |
631 | { | |
632 | /* alernativly, since no cache, emit a dummy definition for | |
4e0bf4c4 AC |
633 | idecode_cache so that code refering to the type can still compile */ |
634 | lf_printf (file, "typedef void %sidecode_cache;\n", | |
635 | options.module.global.prefix.l); | |
c906108c SS |
636 | } |
637 | lf_printf (file, "\n"); | |
638 | } | |
639 | ||
640 | ||
641 | ||
642 | static void | |
643 | print_icache_function (lf *file, | |
4e0bf4c4 | 644 | insn_entry * instruction, |
c906108c SS |
645 | opcode_bits *expanded_bits, |
646 | insn_opcodes *opcodes, | |
4e0bf4c4 | 647 | cache_entry *cache_rules, int nr_prefetched_words) |
c906108c SS |
648 | { |
649 | int indent; | |
650 | ||
651 | /* generate code to enter decoded instruction into the icache */ | |
4e0bf4c4 | 652 | lf_printf (file, "\n"); |
c906108c SS |
653 | lf_print__function_type_function (file, print_icache_function_type, |
654 | "EXTERN_ICACHE", "\n"); | |
655 | indent = print_function_name (file, | |
656 | instruction->name, | |
657 | instruction->format_name, | |
658 | NULL, | |
4e0bf4c4 | 659 | expanded_bits, function_name_prefix_icache); |
c906108c SS |
660 | indent += lf_printf (file, " "); |
661 | lf_indent (file, +indent); | |
662 | lf_printf (file, "("); | |
663 | print_icache_function_formal (file, nr_prefetched_words); | |
664 | lf_printf (file, ")\n"); | |
665 | lf_indent (file, -indent); | |
4e0bf4c4 | 666 | |
c906108c SS |
667 | /* function header */ |
668 | lf_printf (file, "{\n"); | |
669 | lf_indent (file, +2); | |
4e0bf4c4 | 670 | |
c906108c SS |
671 | print_my_defines (file, |
672 | instruction->name, | |
4e0bf4c4 AC |
673 | instruction->format_name, expanded_bits); |
674 | print_itrace (file, instruction, 1 /*putting-value-in-cache */ ); | |
675 | ||
c906108c | 676 | print_idecode_validate (file, instruction, opcodes); |
4e0bf4c4 | 677 | |
c906108c SS |
678 | lf_printf (file, "\n"); |
679 | lf_printf (file, "{\n"); | |
680 | lf_indent (file, +2); | |
681 | if (options.gen.semantic_icache) | |
682 | lf_printf (file, "unsigned_word nia;\n"); | |
683 | print_icache_body (file, | |
684 | instruction, | |
685 | expanded_bits, | |
686 | cache_rules, | |
687 | (options.gen.direct_access | |
688 | ? define_variables | |
689 | : declare_variables), | |
690 | (options.gen.semantic_icache | |
691 | ? both_values_and_icache | |
4e0bf4c4 AC |
692 | : put_values_in_icache), nr_prefetched_words); |
693 | ||
c906108c SS |
694 | lf_printf (file, "\n"); |
695 | lf_printf (file, "cache_entry->address = cia;\n"); | |
696 | lf_printf (file, "cache_entry->semantic = "); | |
697 | print_function_name (file, | |
698 | instruction->name, | |
699 | instruction->format_name, | |
4e0bf4c4 | 700 | NULL, expanded_bits, function_name_prefix_semantics); |
c906108c SS |
701 | lf_printf (file, ";\n"); |
702 | lf_printf (file, "\n"); | |
703 | ||
4e0bf4c4 AC |
704 | if (options.gen.semantic_icache) |
705 | { | |
706 | lf_printf (file, "/* semantic routine */\n"); | |
707 | print_semantic_body (file, instruction, expanded_bits, opcodes); | |
708 | lf_printf (file, "return nia;\n"); | |
709 | } | |
710 | ||
c906108c SS |
711 | if (!options.gen.semantic_icache) |
712 | { | |
713 | lf_printf (file, "/* return the function proper */\n"); | |
714 | lf_printf (file, "return "); | |
715 | print_function_name (file, | |
716 | instruction->name, | |
717 | instruction->format_name, | |
718 | NULL, | |
4e0bf4c4 | 719 | expanded_bits, function_name_prefix_semantics); |
c906108c SS |
720 | lf_printf (file, ";\n"); |
721 | } | |
4e0bf4c4 | 722 | |
c906108c SS |
723 | if (options.gen.direct_access) |
724 | { | |
725 | print_icache_body (file, | |
726 | instruction, | |
727 | expanded_bits, | |
728 | cache_rules, | |
729 | undef_variables, | |
730 | (options.gen.semantic_icache | |
731 | ? both_values_and_icache | |
4e0bf4c4 | 732 | : put_values_in_icache), nr_prefetched_words); |
c906108c | 733 | } |
4e0bf4c4 | 734 | |
c906108c SS |
735 | lf_indent (file, -2); |
736 | lf_printf (file, "}\n"); | |
737 | lf_indent (file, -2); | |
738 | lf_printf (file, "}\n"); | |
739 | } | |
740 | ||
741 | ||
742 | void | |
743 | print_icache_definition (lf *file, | |
4e0bf4c4 | 744 | insn_entry * insn, |
c906108c SS |
745 | opcode_bits *expanded_bits, |
746 | insn_opcodes *opcodes, | |
4e0bf4c4 | 747 | cache_entry *cache_rules, int nr_prefetched_words) |
c906108c SS |
748 | { |
749 | print_icache_function (file, | |
750 | insn, | |
751 | expanded_bits, | |
4e0bf4c4 | 752 | opcodes, cache_rules, nr_prefetched_words); |
c906108c SS |
753 | } |
754 | ||
755 | ||
756 | ||
757 | void | |
758 | print_icache_internal_function_declaration (lf *file, | |
4e0bf4c4 | 759 | function_entry * function, |
c906108c SS |
760 | void *data) |
761 | { | |
762 | ASSERT (options.gen.icache); | |
763 | if (function->is_internal) | |
764 | { | |
765 | lf_printf (file, "\n"); | |
766 | lf_print__function_type_function (file, print_icache_function_type, | |
767 | "INLINE_ICACHE", "\n"); | |
768 | print_function_name (file, | |
769 | function->name, | |
4e0bf4c4 | 770 | NULL, NULL, NULL, function_name_prefix_icache); |
c906108c SS |
771 | lf_printf (file, "\n("); |
772 | print_icache_function_formal (file, 0); | |
773 | lf_printf (file, ");\n"); | |
774 | } | |
775 | } | |
776 | ||
777 | ||
778 | void | |
779 | print_icache_internal_function_definition (lf *file, | |
4e0bf4c4 | 780 | function_entry * function, |
c906108c SS |
781 | void *data) |
782 | { | |
783 | ASSERT (options.gen.icache); | |
784 | if (function->is_internal) | |
785 | { | |
786 | lf_printf (file, "\n"); | |
787 | lf_print__function_type_function (file, print_icache_function_type, | |
788 | "INLINE_ICACHE", "\n"); | |
789 | print_function_name (file, | |
790 | function->name, | |
4e0bf4c4 | 791 | NULL, NULL, NULL, function_name_prefix_icache); |
c906108c SS |
792 | lf_printf (file, "\n("); |
793 | print_icache_function_formal (file, 0); | |
794 | lf_printf (file, ")\n"); | |
795 | lf_printf (file, "{\n"); | |
796 | lf_indent (file, +2); | |
797 | lf_printf (file, "/* semantic routine */\n"); | |
798 | if (options.gen.semantic_icache) | |
799 | { | |
800 | lf_print__line_ref (file, function->code->line); | |
801 | table_print_code (file, function->code); | |
4e0bf4c4 AC |
802 | lf_printf (file, |
803 | "error (\"Internal function must longjump\\n\");\n"); | |
c906108c SS |
804 | lf_printf (file, "return 0;\n"); |
805 | } | |
806 | else | |
807 | { | |
808 | lf_printf (file, "return "); | |
809 | print_function_name (file, | |
810 | function->name, | |
811 | NULL, | |
4e0bf4c4 | 812 | NULL, NULL, function_name_prefix_semantics); |
c906108c SS |
813 | lf_printf (file, ";\n"); |
814 | } | |
4e0bf4c4 | 815 | |
c906108c SS |
816 | lf_print__internal_ref (file); |
817 | lf_indent (file, -2); | |
818 | lf_printf (file, "}\n"); | |
819 | } | |
820 | } |