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[thirdparty/binutils-gdb.git] / sim / ppc / igen.c
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c906108c
SS		 1/* This file is part of the program psim.
2
3 Copyright (C) 1994-1997, 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
23#include <getopt.h>
24
25#include "misc.h"
26#include "lf.h"
27#include "table.h"
28#include "config.h"
29
30#include "filter.h"
31
32#include "ld-decode.h"
33#include "ld-cache.h"
34#include "ld-insn.h"
35
36#include "igen.h"
37
38#include "gen-model.h"
39#include "gen-icache.h"
40#include "gen-itable.h"
41#include "gen-idecode.h"
42#include "gen-semantics.h"
43#include "gen-support.h"
44
45int hi_bit_nr;
46int insn_bit_size = max_insn_bit_size;
47
48igen_code code = generate_calls;
49
50int generate_expanded_instructions;
51int icache_size = 1024;
52int generate_smp;
53
54/****************************************************************/
55
56static int
57print_insn_bits(lf *file, insn_bits *bits)
58{
59 int nr = 0;
60 if (bits == NULL)
61 return nr;
62 nr += print_insn_bits(file, bits->last);
63 nr += lf_putchr(file, '_');
64 nr += lf_putstr(file, bits->field->val_string);
65 if (bits->opcode->is_boolean && bits->value == 0)
66 nr += lf_putint(file, bits->opcode->boolean_constant);
67 else if (!bits->opcode->is_boolean) {
68 if (bits->opcode->last < bits->field->last)
69 nr += lf_putint(file, bits->value << (bits->field->last - bits->opcode->last));
70 else
71 nr += lf_putint(file, bits->value);
72 }
73 return nr;
74}
75
76extern int
77print_function_name(lf *file,
78 const char *basename,
79 insn_bits *expanded_bits,
80 lf_function_name_prefixes prefix)
81{
82 int nr = 0;
83 /* the prefix */
84 switch (prefix) {
85 case function_name_prefix_semantics:
86 nr += lf_putstr(file, "semantic_");
87 break;
88 case function_name_prefix_idecode:
89 nr += lf_printf(file, "idecode_");
90 break;
91 case function_name_prefix_itable:
92 nr += lf_putstr(file, "itable_");
93 break;
94 case function_name_prefix_icache:
95 nr += lf_putstr(file, "icache_");
96 break;
97 default:
98 break;
99 }
100
101 /* the function name */
102 {
103 const char *pos;
104 for (pos = basename;
105 *pos != '\0';
106 pos++) {
107 switch (*pos) {
108 case '/':
109 case '-':
110 break;
111 case ' ':
112 nr += lf_putchr(file, '_');
113 break;
114 default:
115 nr += lf_putchr(file, *pos);
116 break;
117 }
118 }
119 }
120
121 /* the suffix */
122 if (generate_expanded_instructions)
123 nr += print_insn_bits(file, expanded_bits);
124
125 return nr;
126}
127
128
129void
130print_my_defines(lf *file,
131 insn_bits *expanded_bits,
132 table_entry *file_entry)
133{
134 /* #define MY_INDEX xxxxx */
135 lf_indent_suppress(file);
136 lf_printf(file, "#undef MY_INDEX\n");
137 lf_indent_suppress(file);
138 lf_printf(file, "#define MY_INDEX ");
139 print_function_name(file,
140 file_entry->fields[insn_name],
141 NULL,
142 function_name_prefix_itable);
143 lf_printf(file, "\n");
144 /* #define MY_PREFIX xxxxxx */
145 lf_indent_suppress(file);
146 lf_printf(file, "#undef MY_PREFIX\n");
147 lf_indent_suppress(file);
148 lf_printf(file, "#define MY_PREFIX ");
149 print_function_name(file,
150 file_entry->fields[insn_name],
151 expanded_bits,
152 function_name_prefix_none);
153 lf_printf(file, "\n");
154}
155
156
157void
158print_itrace(lf *file,
159 table_entry *file_entry,
160 int idecode)
161{
162 lf_print__external_reference(file, file_entry->line_nr, file_entry->file_name);
163 lf_printf(file, "ITRACE(trace_%s, (\"%s %s\\n\"));\n",
164 (idecode ? "idecode" : "semantics"),
165 (idecode ? "idecode" : "semantics"),
166 file_entry->fields[insn_name]);
167 lf_print__internal_reference(file);
168}
169
170
171/****************************************************************/
172
173
174static void
175gen_semantics_h(insn_table *table,
176 lf *file,
177 igen_code generate)
178{
179 lf_printf(file, "typedef %s idecode_semantic\n(%s);\n",
180 SEMANTIC_FUNCTION_TYPE,
181 SEMANTIC_FUNCTION_FORMAL);
182 lf_printf(file, "\n");
183 if ((code & generate_calls)) {
c906108c
SS		 184 lf_printf(file, "extern int option_mpc860c0;\n");
185 lf_printf(file, "#define PAGE_SIZE 0x1000\n");
186 lf_printf(file, "\n");
187 lf_printf(file, "EXTERN_SEMANTICS(void)\n");
188 lf_printf(file, "semantic_init(device* root);\n");
189 lf_printf(file, "\n");
c906108c
SS		 190 if (generate_expanded_instructions)
191 insn_table_traverse_tree(table,
192 file, NULL,
193 1,
194 NULL, /* start */
195 print_semantic_declaration, /* leaf */
196 NULL, /* end */
197 NULL); /* padding */
198 else
199 insn_table_traverse_insn(table,
200 file, NULL,
201 print_semantic_declaration);
202
203 }
204 else {
205 lf_print__this_file_is_empty(file);
206 }
207}
208
209
210static void
211gen_semantics_c(insn_table *table,
212 cache_table *cache_rules,
213 lf *file,
214 igen_code generate)
215{
216 if ((code & generate_calls)) {
217 lf_printf(file, "\n");
218 lf_printf(file, "#include \"cpu.h\"\n");
219 lf_printf(file, "#include \"idecode.h\"\n");
220 lf_printf(file, "#include \"semantics.h\"\n");
221 lf_printf(file, "#include \"support.h\"\n");
222 lf_printf(file, "\n");
c906108c
SS		 223 lf_printf(file, "int option_mpc860c0 = 0;\n");
224 lf_printf(file, "\n");
225 lf_printf(file, "EXTERN_SEMANTICS(void)\n");
226 lf_printf(file, "semantic_init(device* root)\n");
227 lf_printf(file, "{\n");
228 lf_printf(file, " option_mpc860c0 = 0;\n");
229 lf_printf(file, " if (tree_find_property(root, \"/options/mpc860c0\"))\n");
230 lf_printf(file, " option_mpc860c0 = tree_find_integer_property(root, \"/options/mpc860c0\");\n");
7a292a7a 231 lf_printf(file, " option_mpc860c0 *= 4; /* convert word count to byte count */\n");
c906108c
SS		 232 lf_printf(file, "}\n");
233 lf_printf(file, "\n");
c906108c
SS		 234 if (generate_expanded_instructions)
235 insn_table_traverse_tree(table,
236 file, cache_rules,
237 1,
238 NULL, /* start */
239 print_semantic_definition, /* leaf */
240 NULL, /* end */
241 NULL); /* padding */
242 else
243 insn_table_traverse_insn(table,
244 file, cache_rules,
245 print_semantic_definition);
246
247 }
248 else {
249 lf_print__this_file_is_empty(file);
250 }
251}
252
253
254/****************************************************************/
255
256
257static void
258gen_icache_h(insn_table *table,
259 lf *file,
260 igen_code generate)
261{
262 lf_printf(file, "typedef %s idecode_icache\n(%s);\n",
263 ICACHE_FUNCTION_TYPE,
264 ICACHE_FUNCTION_FORMAL);
265 lf_printf(file, "\n");
266 if ((code & generate_calls)
267 && (code & generate_with_icache)) {
268 insn_table_traverse_function(table,
269 file, NULL,
270 print_icache_internal_function_declaration);
271 if (generate_expanded_instructions)
272 insn_table_traverse_tree(table,
273 file, NULL,
274 1,
275 NULL, /* start */
276 print_icache_declaration, /* leaf */
277 NULL, /* end */
278 NULL); /* padding */
279 else
280 insn_table_traverse_insn(table,
281 file, NULL,
282 print_icache_declaration);
283
284 }
285 else {
286 lf_print__this_file_is_empty(file);
287 }
288}
289
290static void
291gen_icache_c(insn_table *table,
292 cache_table *cache_rules,
293 lf *file,
294 igen_code generate)
295{
296 /* output `internal' invalid/floating-point unavailable functions
297 where needed */
298 if ((code & generate_calls)
299 && (code & generate_with_icache)) {
300 lf_printf(file, "\n");
301 lf_printf(file, "#include \"cpu.h\"\n");
302 lf_printf(file, "#include \"idecode.h\"\n");
303 lf_printf(file, "#include \"semantics.h\"\n");
304 lf_printf(file, "#include \"icache.h\"\n");
305 lf_printf(file, "#include \"support.h\"\n");
306 lf_printf(file, "\n");
307 insn_table_traverse_function(table,
308 file, NULL,
309 print_icache_internal_function_definition);
310 lf_printf(file, "\n");
311 if (generate_expanded_instructions)
312 insn_table_traverse_tree(table,
313 file, cache_rules,
314 1,
315 NULL, /* start */
316 print_icache_definition, /* leaf */
317 NULL, /* end */
318 NULL); /* padding */
319 else
320 insn_table_traverse_insn(table,
321 file, cache_rules,
322 print_icache_definition);
323
324 }
325 else {
326 lf_print__this_file_is_empty(file);
327 }
328}
329
330
331/****************************************************************/
332
333
334int
335main(int argc,
336 char **argv,
337 char **envp)
338{
339 cache_table *cache_rules = NULL;
340 lf_file_references file_references = lf_include_references;
341 decode_table *decode_rules = NULL;
342 filter *filters = NULL;
343 insn_table *instructions = NULL;
344 char *real_file_name = NULL;
345 int is_header = 0;
346 int ch;
347
348 if (argc == 1) {
349 printf("Usage:\n");
350 printf(" igen <config-opts> ... <input-opts>... <output-opts>...\n");
351 printf("Config options:\n");
352 printf(" -F <filter-out-flag> eg -F 64 to skip 64bit instructions\n");
353 printf(" -E Expand (duplicate) semantic functions\n");
354 printf(" -I <icache-size> Generate cracking cache version\n");
355 printf(" -C Include semantics in cache functions\n");
356 printf(" -S Include insn (instruction) in icache\n");
357 printf(" -R Use defines to reference cache vars\n");
358 printf(" -L Supress line numbering in output files\n");
359 printf(" -B <bit-size> Set the number of bits in an instruction\n");
360 printf(" -H <high-bit> Set the nr of the high (msb bit)\n");
361 printf(" -N <nr-cpus> Specify the max number of cpus the simulation will support\n");
362 printf(" -J Use jumps instead of function calls\n");
363 printf(" -T <mechanism> Override the mechanism used to decode an instruction\n");
364 printf(" using <mechanism> instead of what was specified in the\n");
365 printf(" decode-rules input file\n");
366 printf("\n");
367 printf("Input options (ucase version also dumps loaded table):\n");
368 printf(" -o <decode-rules>\n");
369 printf(" -k <cache-rules>\n");
370 printf(" -i <instruction-table>\n");
371 printf("\n");
372 printf("Output options:\n");
373 printf(" -n <real-name> Specify the real name of for the next output file\n");
374 printf(" -h Generate header file\n");
375 printf(" -c <output-file> output icache\n");
376 printf(" -d <output-file> output idecode\n");
377 printf(" -m <output-file> output model\n");
378 printf(" -s <output-file> output schematic\n");
379 printf(" -t <output-file> output itable\n");
380 printf(" -f <output-file> output support functions\n");
381 }
382
383 while ((ch = getopt(argc, argv,
384 "F:EI:RSLJT:CB:H:N:o:k:i:n:hc:d:m:s:t:f:"))
385 != -1) {
386 fprintf(stderr, "\t-%c %s\n", ch, (optarg ? optarg : ""));
387 switch(ch) {
388 case 'C':
389 code |= generate_with_icache;
390 code |= generate_with_semantic_icache;
391 break;
392 case 'S':
393 code |= generate_with_icache;
394 code |= generate_with_insn_in_icache;
395 break;
396 case 'L':
397 file_references = lf_omit_references;
398 break;
399 case 'E':
400 generate_expanded_instructions = 1;
401 break;
402 case 'I':
403 icache_size = a2i(optarg);
404 code |= generate_with_icache;
405 break;
406 case 'N':
407 generate_smp = a2i(optarg);
408 break;
409 case 'R':
410 code |= generate_with_direct_access;
411 break;
412 case 'B':
413 insn_bit_size = a2i(optarg);
414 ASSERT(insn_bit_size > 0 && insn_bit_size <= max_insn_bit_size
415 && (hi_bit_nr == insn_bit_size-1 || hi_bit_nr == 0));
416 break;
417 case 'H':
418 hi_bit_nr = a2i(optarg);
419 ASSERT(hi_bit_nr == insn_bit_size-1 || hi_bit_nr == 0);
420 break;
421 case 'F':
422 filters = new_filter(optarg, filters);
423 break;
424 case 'J':
425 code &= ~generate_calls;
426 code |= generate_jumps;
427 break;
428 case 'T':
429 force_decode_gen_type(optarg);
430 break;
431 case 'i':
432 if (decode_rules == NULL || cache_rules == NULL) {
433 fprintf(stderr, "Must specify decode and cache tables\n");
434 exit (1);
435 }
436 instructions = load_insn_table(optarg, decode_rules, filters);
437 fprintf(stderr, "\texpanding ...\n");
438 insn_table_expand_insns(instructions);
439 break;
440 case 'o':
441 decode_rules = load_decode_table(optarg, hi_bit_nr);
442 break;
443 case 'k':
444 cache_rules = load_cache_table(optarg, hi_bit_nr);
445 break;
446 case 'n':
447 real_file_name = strdup(optarg);
448 break;
449 case 'h':
450 is_header = 1;
451 break;
452 case 's':
453 case 'd':
454 case 'm':
455 case 't':
456 case 'f':
457 case 'c':
458 {
459 lf *file = lf_open(optarg, real_file_name, file_references,
460 (is_header ? lf_is_h : lf_is_c),
461 argv[0]);
462 lf_print__file_start(file);
463 ASSERT(instructions != NULL);
464 switch (ch) {
465 case 's':
466 if(is_header)
467 gen_semantics_h(instructions, file, code);
468 else
469 gen_semantics_c(instructions, cache_rules, file, code);
470 break;
471 case 'd':
472 if (is_header)
473 gen_idecode_h(file, instructions, cache_rules);
474 else
475 gen_idecode_c(file, instructions, cache_rules);
476 break;
477 case 'm':
478 if (is_header)
479 gen_model_h(instructions, file);
480 else
481 gen_model_c(instructions, file);
482 break;
483 case 't':
484 if (is_header)
485 gen_itable_h(instructions, file);
486 else
487 gen_itable_c(instructions, file);
488 break;
489 case 'f':
490 if (is_header)
491 gen_support_h(instructions, file);
492 else
493 gen_support_c(instructions, file);
494 break;
495 case 'c':
496 if (is_header)
497 gen_icache_h(instructions, file, code);
498 else
499 gen_icache_c(instructions, cache_rules, file, code);
500 break;
501 }
502 lf_print__file_finish(file);
503 lf_close(file);
504 is_header = 0;
505 }
506 real_file_name = NULL;
507 break;
508 default:
509 error("unknown option\n");
510 }
511 }
512 return 0;
513}
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