1 | /* Configurable Xtensa ISA support. |
2 | * |
3 | * Copyright (c) 2001-2011 Tensilica Inc. |
4 | * |
5 | * Permission is hereby granted, free of charge, to any person obtaining |
6 | * a copy of this software and associated documentation files (the |
7 | * "Software"), to deal in the Software without restriction, including |
8 | * without limitation the rights to use, copy, modify, merge, publish, |
9 | * distribute, sublicense, and/or sell copies of the Software, and to |
10 | * permit persons to whom the Software is furnished to do so, subject to |
11 | * the following conditions: |
12 | * |
13 | * The above copyright notice and this permission notice shall be included |
14 | * in all copies or substantial portions of the Software. |
15 | * |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
17 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
18 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
19 | * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
20 | * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
21 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
22 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
23 | */ |
24 | |
25 | #include "qemu/osdep.h" |
26 | #include "xtensa-isa.h" |
27 | #include "xtensa-isa-internal.h" |
28 | |
29 | xtensa_isa_status xtisa_errno; |
30 | char xtisa_error_msg[1024]; |
31 | |
32 | |
33 | xtensa_isa_status xtensa_isa_errno(xtensa_isa isa __attribute__ ((unused))) |
34 | { |
35 | return xtisa_errno; |
36 | } |
37 | |
38 | |
39 | char *xtensa_isa_error_msg(xtensa_isa isa __attribute__ ((unused))) |
40 | { |
41 | return xtisa_error_msg; |
42 | } |
43 | |
44 | |
45 | #define CHECK_ALLOC(MEM, ERRVAL) \ |
46 | do { \ |
47 | if ((MEM) == 0) { \ |
48 | xtisa_errno = xtensa_isa_out_of_memory; \ |
49 | strcpy(xtisa_error_msg, "out of memory"); \ |
50 | return ERRVAL; \ |
51 | } \ |
52 | } while (0) |
53 | |
54 | #define CHECK_ALLOC_FOR_INIT(MEM, ERRVAL, ERRNO_P, ERROR_MSG_P) \ |
55 | do { \ |
56 | if ((MEM) == 0) { \ |
57 | xtisa_errno = xtensa_isa_out_of_memory; \ |
58 | strcpy(xtisa_error_msg, "out of memory"); \ |
59 | if (ERRNO_P) { \ |
60 | *(ERRNO_P) = xtisa_errno; \ |
61 | } \ |
62 | if (ERROR_MSG_P) { \ |
63 | *(ERROR_MSG_P) = xtisa_error_msg; \ |
64 | } \ |
65 | return ERRVAL; \ |
66 | } \ |
67 | } while (0) |
68 | |
69 | |
70 | /* Instruction buffers. */ |
71 | |
72 | int xtensa_insnbuf_size(xtensa_isa isa) |
73 | { |
74 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
75 | return intisa->insnbuf_size; |
76 | } |
77 | |
78 | |
79 | xtensa_insnbuf xtensa_insnbuf_alloc(xtensa_isa isa) |
80 | { |
81 | xtensa_insnbuf result = (xtensa_insnbuf) |
82 | malloc(xtensa_insnbuf_size(isa) * sizeof(xtensa_insnbuf_word)); |
83 | |
84 | CHECK_ALLOC(result, 0); |
85 | return result; |
86 | } |
87 | |
88 | |
89 | void xtensa_insnbuf_free(xtensa_isa isa __attribute__ ((unused)), |
90 | xtensa_insnbuf buf) |
91 | { |
92 | free(buf); |
93 | } |
94 | |
95 | |
96 | /* |
97 | * Given <byte_index>, the index of a byte in a xtensa_insnbuf, our |
98 | * internal representation of a xtensa instruction word, return the index of |
99 | * its word and the bit index of its low order byte in the xtensa_insnbuf. |
100 | */ |
101 | |
102 | static inline int byte_to_word_index(int byte_index) |
103 | { |
104 | return byte_index / sizeof(xtensa_insnbuf_word); |
105 | } |
106 | |
107 | |
108 | static inline int byte_to_bit_index(int byte_index) |
109 | { |
110 | return (byte_index & 0x3) * 8; |
111 | } |
112 | |
113 | |
114 | /* |
115 | * Copy an instruction in the 32-bit words pointed at by "insn" to |
116 | * characters pointed at by "cp". This is more complicated than you |
117 | * might think because we want 16-bit instructions in bytes 2 & 3 for |
118 | * big-endian configurations. This function allows us to specify |
119 | * which byte in "insn" to start with and which way to increment, |
120 | * allowing trivial implementation for both big- and little-endian |
121 | * configurations....and it seems to make pretty good code for |
122 | * both. |
123 | */ |
124 | |
125 | int xtensa_insnbuf_to_chars(xtensa_isa isa, |
126 | const xtensa_insnbuf insn, |
127 | unsigned char *cp, |
128 | int num_chars) |
129 | { |
130 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
131 | int insn_size = xtensa_isa_maxlength(isa); |
132 | int fence_post, start, increment, i, byte_count; |
133 | xtensa_format fmt; |
134 | |
135 | if (num_chars == 0) { |
136 | num_chars = insn_size; |
137 | } |
138 | |
139 | if (intisa->is_big_endian) { |
140 | start = insn_size - 1; |
141 | increment = -1; |
142 | } else { |
143 | start = 0; |
144 | increment = 1; |
145 | } |
146 | |
147 | /* |
148 | * Find the instruction format. Do nothing if the buffer does not contain |
149 | * a valid instruction since we need to know how many bytes to copy. |
150 | */ |
151 | fmt = xtensa_format_decode(isa, insn); |
152 | if (fmt == XTENSA_UNDEFINED) { |
153 | return XTENSA_UNDEFINED; |
154 | } |
155 | |
156 | byte_count = xtensa_format_length(isa, fmt); |
157 | if (byte_count == XTENSA_UNDEFINED) { |
158 | return XTENSA_UNDEFINED; |
159 | } |
160 | |
161 | if (byte_count > num_chars) { |
162 | xtisa_errno = xtensa_isa_buffer_overflow; |
163 | strcpy(xtisa_error_msg, "output buffer too small for instruction" ); |
164 | return XTENSA_UNDEFINED; |
165 | } |
166 | |
167 | fence_post = start + (byte_count * increment); |
168 | |
169 | for (i = start; i != fence_post; i += increment, ++cp) { |
170 | int word_inx = byte_to_word_index(i); |
171 | int bit_inx = byte_to_bit_index(i); |
172 | |
173 | *cp = (insn[word_inx] >> bit_inx) & 0xff; |
174 | } |
175 | |
176 | return byte_count; |
177 | } |
178 | |
179 | |
180 | /* |
181 | * Inward conversion from byte stream to xtensa_insnbuf. See |
182 | * xtensa_insnbuf_to_chars for a discussion of why this is complicated |
183 | * by endianness. |
184 | */ |
185 | |
186 | void xtensa_insnbuf_from_chars(xtensa_isa isa, |
187 | xtensa_insnbuf insn, |
188 | const unsigned char *cp, |
189 | int num_chars) |
190 | { |
191 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
192 | int max_size, insn_size, fence_post, start, increment, i; |
193 | |
194 | max_size = xtensa_isa_maxlength(isa); |
195 | |
196 | /* Decode the instruction length so we know how many bytes to read. */ |
197 | insn_size = (intisa->length_decode_fn)(cp); |
198 | if (insn_size == XTENSA_UNDEFINED) { |
199 | /* |
200 | * This should never happen when the byte stream contains a |
201 | * valid instruction. Just read the maximum number of bytes.... |
202 | */ |
203 | insn_size = max_size; |
204 | } |
205 | |
206 | if (num_chars == 0 || num_chars > insn_size) { |
207 | num_chars = insn_size; |
208 | } |
209 | |
210 | if (intisa->is_big_endian) { |
211 | start = max_size - 1; |
212 | increment = -1; |
213 | } else { |
214 | start = 0; |
215 | increment = 1; |
216 | } |
217 | |
218 | fence_post = start + (num_chars * increment); |
219 | memset(insn, 0, xtensa_insnbuf_size(isa) * sizeof(xtensa_insnbuf_word)); |
220 | |
221 | for (i = start; i != fence_post; i += increment, ++cp) { |
222 | int word_inx = byte_to_word_index(i); |
223 | int bit_inx = byte_to_bit_index(i); |
224 | |
225 | insn[word_inx] |= (*cp & 0xff) << bit_inx; |
226 | } |
227 | } |
228 | |
229 | |
230 | /* ISA information. */ |
231 | |
232 | xtensa_isa xtensa_isa_init(void *xtensa_modules, xtensa_isa_status *errno_p, |
233 | char **error_msg_p) |
234 | { |
235 | xtensa_isa_internal *isa = xtensa_modules; |
236 | int n, is_user; |
237 | |
238 | /* Set up the opcode name lookup table. */ |
239 | isa->opname_lookup_table = |
240 | malloc(isa->num_opcodes * sizeof(xtensa_lookup_entry)); |
241 | CHECK_ALLOC_FOR_INIT(isa->opname_lookup_table, NULL, errno_p, error_msg_p); |
242 | for (n = 0; n < isa->num_opcodes; n++) { |
243 | isa->opname_lookup_table[n].key = isa->opcodes[n].name; |
244 | isa->opname_lookup_table[n].u.opcode = n; |
245 | } |
246 | qsort(isa->opname_lookup_table, isa->num_opcodes, |
247 | sizeof(xtensa_lookup_entry), xtensa_isa_name_compare); |
248 | |
249 | /* Set up the state name lookup table. */ |
250 | isa->state_lookup_table = |
251 | malloc(isa->num_states * sizeof(xtensa_lookup_entry)); |
252 | CHECK_ALLOC_FOR_INIT(isa->state_lookup_table, NULL, errno_p, error_msg_p); |
253 | for (n = 0; n < isa->num_states; n++) { |
254 | isa->state_lookup_table[n].key = isa->states[n].name; |
255 | isa->state_lookup_table[n].u.state = n; |
256 | } |
257 | qsort(isa->state_lookup_table, isa->num_states, |
258 | sizeof(xtensa_lookup_entry), xtensa_isa_name_compare); |
259 | |
260 | /* Set up the sysreg name lookup table. */ |
261 | isa->sysreg_lookup_table = |
262 | malloc(isa->num_sysregs * sizeof(xtensa_lookup_entry)); |
263 | CHECK_ALLOC_FOR_INIT(isa->sysreg_lookup_table, NULL, errno_p, error_msg_p); |
264 | for (n = 0; n < isa->num_sysregs; n++) { |
265 | isa->sysreg_lookup_table[n].key = isa->sysregs[n].name; |
266 | isa->sysreg_lookup_table[n].u.sysreg = n; |
267 | } |
268 | qsort(isa->sysreg_lookup_table, isa->num_sysregs, |
269 | sizeof(xtensa_lookup_entry), xtensa_isa_name_compare); |
270 | |
271 | /* Set up the user & system sysreg number tables. */ |
272 | for (is_user = 0; is_user < 2; is_user++) { |
273 | isa->sysreg_table[is_user] = |
274 | malloc((isa->max_sysreg_num[is_user] + 1) * sizeof(xtensa_sysreg)); |
275 | CHECK_ALLOC_FOR_INIT(isa->sysreg_table[is_user], NULL, |
276 | errno_p, error_msg_p); |
277 | |
278 | for (n = 0; n <= isa->max_sysreg_num[is_user]; n++) { |
279 | isa->sysreg_table[is_user][n] = XTENSA_UNDEFINED; |
280 | } |
281 | } |
282 | for (n = 0; n < isa->num_sysregs; n++) { |
283 | xtensa_sysreg_internal *sreg = &isa->sysregs[n]; |
284 | is_user = sreg->is_user; |
285 | |
286 | if (sreg->number >= 0) { |
287 | isa->sysreg_table[is_user][sreg->number] = n; |
288 | } |
289 | } |
290 | |
291 | /* Set up the interface lookup table. */ |
292 | isa->interface_lookup_table = |
293 | malloc(isa->num_interfaces * sizeof(xtensa_lookup_entry)); |
294 | CHECK_ALLOC_FOR_INIT(isa->interface_lookup_table, NULL, errno_p, |
295 | error_msg_p); |
296 | for (n = 0; n < isa->num_interfaces; n++) { |
297 | isa->interface_lookup_table[n].key = isa->interfaces[n].name; |
298 | isa->interface_lookup_table[n].u.intf = n; |
299 | } |
300 | qsort(isa->interface_lookup_table, isa->num_interfaces, |
301 | sizeof(xtensa_lookup_entry), xtensa_isa_name_compare); |
302 | |
303 | /* Set up the funcUnit lookup table. */ |
304 | isa->funcUnit_lookup_table = |
305 | malloc(isa->num_funcUnits * sizeof(xtensa_lookup_entry)); |
306 | CHECK_ALLOC_FOR_INIT(isa->funcUnit_lookup_table, NULL, errno_p, |
307 | error_msg_p); |
308 | for (n = 0; n < isa->num_funcUnits; n++) { |
309 | isa->funcUnit_lookup_table[n].key = isa->funcUnits[n].name; |
310 | isa->funcUnit_lookup_table[n].u.fun = n; |
311 | } |
312 | qsort(isa->funcUnit_lookup_table, isa->num_funcUnits, |
313 | sizeof(xtensa_lookup_entry), xtensa_isa_name_compare); |
314 | |
315 | isa->insnbuf_size = ((isa->insn_size + sizeof(xtensa_insnbuf_word) - 1) / |
316 | sizeof(xtensa_insnbuf_word)); |
317 | isa->num_stages = XTENSA_UNDEFINED; |
318 | |
319 | return (xtensa_isa)isa; |
320 | } |
321 | |
322 | |
323 | void xtensa_isa_free(xtensa_isa isa) |
324 | { |
325 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
326 | int n; |
327 | |
328 | /* |
329 | * With this version of the code, the xtensa_isa structure is not |
330 | * dynamically allocated, so this function is not essential. Free |
331 | * the memory allocated by xtensa_isa_init and restore the xtensa_isa |
332 | * structure to its initial state. |
333 | */ |
334 | |
335 | if (intisa->opname_lookup_table) { |
336 | free(intisa->opname_lookup_table); |
337 | intisa->opname_lookup_table = 0; |
338 | } |
339 | |
340 | if (intisa->state_lookup_table) { |
341 | free(intisa->state_lookup_table); |
342 | intisa->state_lookup_table = 0; |
343 | } |
344 | |
345 | if (intisa->sysreg_lookup_table) { |
346 | free(intisa->sysreg_lookup_table); |
347 | intisa->sysreg_lookup_table = 0; |
348 | } |
349 | for (n = 0; n < 2; n++) { |
350 | if (intisa->sysreg_table[n]) { |
351 | free(intisa->sysreg_table[n]); |
352 | intisa->sysreg_table[n] = 0; |
353 | } |
354 | } |
355 | |
356 | if (intisa->interface_lookup_table) { |
357 | free(intisa->interface_lookup_table); |
358 | intisa->interface_lookup_table = 0; |
359 | } |
360 | |
361 | if (intisa->funcUnit_lookup_table) { |
362 | free(intisa->funcUnit_lookup_table); |
363 | intisa->funcUnit_lookup_table = 0; |
364 | } |
365 | } |
366 | |
367 | |
368 | int xtensa_isa_name_compare(const void *v1, const void *v2) |
369 | { |
370 | xtensa_lookup_entry *e1 = (xtensa_lookup_entry *)v1; |
371 | xtensa_lookup_entry *e2 = (xtensa_lookup_entry *)v2; |
372 | |
373 | return strcasecmp(e1->key, e2->key); |
374 | } |
375 | |
376 | |
377 | int xtensa_isa_maxlength(xtensa_isa isa) |
378 | { |
379 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
380 | return intisa->insn_size; |
381 | } |
382 | |
383 | |
384 | int xtensa_isa_length_from_chars(xtensa_isa isa, const unsigned char *cp) |
385 | { |
386 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
387 | return (intisa->length_decode_fn)(cp); |
388 | } |
389 | |
390 | |
391 | int xtensa_isa_num_pipe_stages(xtensa_isa isa) |
392 | { |
393 | xtensa_opcode opcode; |
394 | xtensa_funcUnit_use *use; |
395 | int num_opcodes, num_uses; |
396 | int i, stage, max_stage; |
397 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
398 | |
399 | /* Only compute the value once. */ |
400 | if (intisa->num_stages != XTENSA_UNDEFINED) { |
401 | return intisa->num_stages; |
402 | } |
403 | |
404 | max_stage = -1; |
405 | |
406 | num_opcodes = xtensa_isa_num_opcodes(isa); |
407 | for (opcode = 0; opcode < num_opcodes; opcode++) { |
408 | num_uses = xtensa_opcode_num_funcUnit_uses(isa, opcode); |
409 | for (i = 0; i < num_uses; i++) { |
410 | use = xtensa_opcode_funcUnit_use(isa, opcode, i); |
411 | stage = use->stage; |
412 | if (stage > max_stage) { |
413 | max_stage = stage; |
414 | } |
415 | } |
416 | } |
417 | |
418 | intisa->num_stages = max_stage + 1; |
419 | return intisa->num_states; |
420 | } |
421 | |
422 | |
423 | int xtensa_isa_num_formats(xtensa_isa isa) |
424 | { |
425 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
426 | return intisa->num_formats; |
427 | } |
428 | |
429 | |
430 | int xtensa_isa_num_opcodes(xtensa_isa isa) |
431 | { |
432 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
433 | return intisa->num_opcodes; |
434 | } |
435 | |
436 | |
437 | int xtensa_isa_num_regfiles(xtensa_isa isa) |
438 | { |
439 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
440 | return intisa->num_regfiles; |
441 | } |
442 | |
443 | |
444 | int xtensa_isa_num_states(xtensa_isa isa) |
445 | { |
446 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
447 | return intisa->num_states; |
448 | } |
449 | |
450 | |
451 | int xtensa_isa_num_sysregs(xtensa_isa isa) |
452 | { |
453 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
454 | return intisa->num_sysregs; |
455 | } |
456 | |
457 | |
458 | int xtensa_isa_num_interfaces(xtensa_isa isa) |
459 | { |
460 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
461 | return intisa->num_interfaces; |
462 | } |
463 | |
464 | |
465 | int xtensa_isa_num_funcUnits(xtensa_isa isa) |
466 | { |
467 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
468 | return intisa->num_funcUnits; |
469 | } |
470 | |
471 | |
472 | /* Instruction formats. */ |
473 | |
474 | |
475 | #define CHECK_FORMAT(INTISA, FMT, ERRVAL) \ |
476 | do { \ |
477 | if ((FMT) < 0 || (FMT) >= (INTISA)->num_formats) { \ |
478 | xtisa_errno = xtensa_isa_bad_format; \ |
479 | strcpy(xtisa_error_msg, "invalid format specifier"); \ |
480 | return ERRVAL; \ |
481 | } \ |
482 | } while (0) |
483 | |
484 | |
485 | #define CHECK_SLOT(INTISA, FMT, SLOT, ERRVAL) \ |
486 | do { \ |
487 | if ((SLOT) < 0 || (SLOT) >= (INTISA)->formats[FMT].num_slots) { \ |
488 | xtisa_errno = xtensa_isa_bad_slot; \ |
489 | strcpy(xtisa_error_msg, "invalid slot specifier"); \ |
490 | return ERRVAL; \ |
491 | } \ |
492 | } while (0) |
493 | |
494 | |
495 | const char *xtensa_format_name(xtensa_isa isa, xtensa_format fmt) |
496 | { |
497 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
498 | |
499 | CHECK_FORMAT(intisa, fmt, NULL); |
500 | return intisa->formats[fmt].name; |
501 | } |
502 | |
503 | |
504 | xtensa_format xtensa_format_lookup(xtensa_isa isa, const char *fmtname) |
505 | { |
506 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
507 | int fmt; |
508 | |
509 | if (!fmtname || !*fmtname) { |
510 | xtisa_errno = xtensa_isa_bad_format; |
511 | strcpy(xtisa_error_msg, "invalid format name" ); |
512 | return XTENSA_UNDEFINED; |
513 | } |
514 | |
515 | for (fmt = 0; fmt < intisa->num_formats; fmt++) { |
516 | if (strcasecmp(fmtname, intisa->formats[fmt].name) == 0) { |
517 | return fmt; |
518 | } |
519 | } |
520 | |
521 | xtisa_errno = xtensa_isa_bad_format; |
522 | sprintf(xtisa_error_msg, "format \"%s\" not recognized" , fmtname); |
523 | return XTENSA_UNDEFINED; |
524 | } |
525 | |
526 | |
527 | xtensa_format xtensa_format_decode(xtensa_isa isa, const xtensa_insnbuf insn) |
528 | { |
529 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
530 | xtensa_format fmt; |
531 | |
532 | fmt = (intisa->format_decode_fn)(insn); |
533 | if (fmt != XTENSA_UNDEFINED) { |
534 | return fmt; |
535 | } |
536 | |
537 | xtisa_errno = xtensa_isa_bad_format; |
538 | strcpy(xtisa_error_msg, "cannot decode instruction format" ); |
539 | return XTENSA_UNDEFINED; |
540 | } |
541 | |
542 | |
543 | int xtensa_format_encode(xtensa_isa isa, xtensa_format fmt, |
544 | xtensa_insnbuf insn) |
545 | { |
546 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
547 | |
548 | CHECK_FORMAT(intisa, fmt, -1); |
549 | (*intisa->formats[fmt].encode_fn)(insn); |
550 | return 0; |
551 | } |
552 | |
553 | |
554 | int xtensa_format_length(xtensa_isa isa, xtensa_format fmt) |
555 | { |
556 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
557 | |
558 | CHECK_FORMAT(intisa, fmt, XTENSA_UNDEFINED); |
559 | return intisa->formats[fmt].length; |
560 | } |
561 | |
562 | |
563 | int xtensa_format_num_slots(xtensa_isa isa, xtensa_format fmt) |
564 | { |
565 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
566 | |
567 | CHECK_FORMAT(intisa, fmt, XTENSA_UNDEFINED); |
568 | return intisa->formats[fmt].num_slots; |
569 | } |
570 | |
571 | |
572 | xtensa_opcode xtensa_format_slot_nop_opcode(xtensa_isa isa, xtensa_format fmt, |
573 | int slot) |
574 | { |
575 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
576 | int slot_id; |
577 | |
578 | CHECK_FORMAT(intisa, fmt, XTENSA_UNDEFINED); |
579 | CHECK_SLOT(intisa, fmt, slot, XTENSA_UNDEFINED); |
580 | |
581 | slot_id = intisa->formats[fmt].slot_id[slot]; |
582 | return xtensa_opcode_lookup(isa, intisa->slots[slot_id].nop_name); |
583 | } |
584 | |
585 | |
586 | int xtensa_format_get_slot(xtensa_isa isa, xtensa_format fmt, int slot, |
587 | const xtensa_insnbuf insn, xtensa_insnbuf slotbuf) |
588 | { |
589 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
590 | int slot_id; |
591 | |
592 | CHECK_FORMAT(intisa, fmt, -1); |
593 | CHECK_SLOT(intisa, fmt, slot, -1); |
594 | |
595 | slot_id = intisa->formats[fmt].slot_id[slot]; |
596 | (*intisa->slots[slot_id].get_fn)(insn, slotbuf); |
597 | return 0; |
598 | } |
599 | |
600 | |
601 | int xtensa_format_set_slot(xtensa_isa isa, xtensa_format fmt, int slot, |
602 | xtensa_insnbuf insn, const xtensa_insnbuf slotbuf) |
603 | { |
604 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
605 | int slot_id; |
606 | |
607 | CHECK_FORMAT(intisa, fmt, -1); |
608 | CHECK_SLOT(intisa, fmt, slot, -1); |
609 | |
610 | slot_id = intisa->formats[fmt].slot_id[slot]; |
611 | (*intisa->slots[slot_id].set_fn)(insn, slotbuf); |
612 | return 0; |
613 | } |
614 | |
615 | |
616 | /* Opcode information. */ |
617 | |
618 | |
619 | #define CHECK_OPCODE(INTISA, OPC, ERRVAL) \ |
620 | do { \ |
621 | if ((OPC) < 0 || (OPC) >= (INTISA)->num_opcodes) { \ |
622 | xtisa_errno = xtensa_isa_bad_opcode; \ |
623 | strcpy(xtisa_error_msg, "invalid opcode specifier"); \ |
624 | return ERRVAL; \ |
625 | } \ |
626 | } while (0) |
627 | |
628 | |
629 | xtensa_opcode xtensa_opcode_lookup(xtensa_isa isa, const char *opname) |
630 | { |
631 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
632 | xtensa_lookup_entry entry, *result = 0; |
633 | |
634 | if (!opname || !*opname) { |
635 | xtisa_errno = xtensa_isa_bad_opcode; |
636 | strcpy(xtisa_error_msg, "invalid opcode name" ); |
637 | return XTENSA_UNDEFINED; |
638 | } |
639 | |
640 | if (intisa->num_opcodes != 0) { |
641 | entry.key = opname; |
642 | result = bsearch(&entry, intisa->opname_lookup_table, |
643 | intisa->num_opcodes, sizeof(xtensa_lookup_entry), |
644 | xtensa_isa_name_compare); |
645 | } |
646 | |
647 | if (!result) { |
648 | xtisa_errno = xtensa_isa_bad_opcode; |
649 | sprintf(xtisa_error_msg, "opcode \"%s\" not recognized" , opname); |
650 | return XTENSA_UNDEFINED; |
651 | } |
652 | |
653 | return result->u.opcode; |
654 | } |
655 | |
656 | |
657 | xtensa_opcode xtensa_opcode_decode(xtensa_isa isa, xtensa_format fmt, int slot, |
658 | const xtensa_insnbuf slotbuf) |
659 | { |
660 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
661 | int slot_id; |
662 | xtensa_opcode opc; |
663 | |
664 | CHECK_FORMAT(intisa, fmt, XTENSA_UNDEFINED); |
665 | CHECK_SLOT(intisa, fmt, slot, XTENSA_UNDEFINED); |
666 | |
667 | slot_id = intisa->formats[fmt].slot_id[slot]; |
668 | |
669 | opc = (intisa->slots[slot_id].opcode_decode_fn) (slotbuf); |
670 | if (opc != XTENSA_UNDEFINED) { |
671 | return opc; |
672 | } |
673 | |
674 | xtisa_errno = xtensa_isa_bad_opcode; |
675 | strcpy(xtisa_error_msg, "cannot decode opcode" ); |
676 | return XTENSA_UNDEFINED; |
677 | } |
678 | |
679 | |
680 | int xtensa_opcode_encode(xtensa_isa isa, xtensa_format fmt, int slot, |
681 | xtensa_insnbuf slotbuf, xtensa_opcode opc) |
682 | { |
683 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
684 | int slot_id; |
685 | xtensa_opcode_encode_fn encode_fn; |
686 | |
687 | CHECK_FORMAT(intisa, fmt, -1); |
688 | CHECK_SLOT(intisa, fmt, slot, -1); |
689 | CHECK_OPCODE(intisa, opc, -1); |
690 | |
691 | slot_id = intisa->formats[fmt].slot_id[slot]; |
692 | encode_fn = intisa->opcodes[opc].encode_fns[slot_id]; |
693 | if (!encode_fn) { |
694 | xtisa_errno = xtensa_isa_wrong_slot; |
695 | sprintf(xtisa_error_msg, |
696 | "opcode \"%s\" is not allowed in slot %d of format \"%s\"" , |
697 | intisa->opcodes[opc].name, slot, intisa->formats[fmt].name); |
698 | return -1; |
699 | } |
700 | (*encode_fn)(slotbuf); |
701 | return 0; |
702 | } |
703 | |
704 | |
705 | const char *xtensa_opcode_name(xtensa_isa isa, xtensa_opcode opc) |
706 | { |
707 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
708 | |
709 | CHECK_OPCODE(intisa, opc, NULL); |
710 | return intisa->opcodes[opc].name; |
711 | } |
712 | |
713 | |
714 | int xtensa_opcode_is_branch(xtensa_isa isa, xtensa_opcode opc) |
715 | { |
716 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
717 | |
718 | CHECK_OPCODE(intisa, opc, XTENSA_UNDEFINED); |
719 | if ((intisa->opcodes[opc].flags & XTENSA_OPCODE_IS_BRANCH) != 0) { |
720 | return 1; |
721 | } |
722 | return 0; |
723 | } |
724 | |
725 | |
726 | int xtensa_opcode_is_jump(xtensa_isa isa, xtensa_opcode opc) |
727 | { |
728 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
729 | |
730 | CHECK_OPCODE(intisa, opc, XTENSA_UNDEFINED); |
731 | if ((intisa->opcodes[opc].flags & XTENSA_OPCODE_IS_JUMP) != 0) { |
732 | return 1; |
733 | } |
734 | return 0; |
735 | } |
736 | |
737 | |
738 | int xtensa_opcode_is_loop(xtensa_isa isa, xtensa_opcode opc) |
739 | { |
740 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
741 | |
742 | CHECK_OPCODE(intisa, opc, XTENSA_UNDEFINED); |
743 | if ((intisa->opcodes[opc].flags & XTENSA_OPCODE_IS_LOOP) != 0) { |
744 | return 1; |
745 | } |
746 | return 0; |
747 | } |
748 | |
749 | |
750 | int xtensa_opcode_is_call(xtensa_isa isa, xtensa_opcode opc) |
751 | { |
752 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
753 | |
754 | CHECK_OPCODE(intisa, opc, XTENSA_UNDEFINED); |
755 | if ((intisa->opcodes[opc].flags & XTENSA_OPCODE_IS_CALL) != 0) { |
756 | return 1; |
757 | } |
758 | return 0; |
759 | } |
760 | |
761 | |
762 | int xtensa_opcode_num_operands(xtensa_isa isa, xtensa_opcode opc) |
763 | { |
764 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
765 | int iclass_id; |
766 | |
767 | CHECK_OPCODE(intisa, opc, XTENSA_UNDEFINED); |
768 | iclass_id = intisa->opcodes[opc].iclass_id; |
769 | return intisa->iclasses[iclass_id].num_operands; |
770 | } |
771 | |
772 | |
773 | int xtensa_opcode_num_stateOperands(xtensa_isa isa, xtensa_opcode opc) |
774 | { |
775 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
776 | int iclass_id; |
777 | |
778 | CHECK_OPCODE(intisa, opc, XTENSA_UNDEFINED); |
779 | iclass_id = intisa->opcodes[opc].iclass_id; |
780 | return intisa->iclasses[iclass_id].num_stateOperands; |
781 | } |
782 | |
783 | |
784 | int xtensa_opcode_num_interfaceOperands(xtensa_isa isa, xtensa_opcode opc) |
785 | { |
786 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
787 | int iclass_id; |
788 | |
789 | CHECK_OPCODE(intisa, opc, XTENSA_UNDEFINED); |
790 | iclass_id = intisa->opcodes[opc].iclass_id; |
791 | return intisa->iclasses[iclass_id].num_interfaceOperands; |
792 | } |
793 | |
794 | |
795 | int xtensa_opcode_num_funcUnit_uses(xtensa_isa isa, xtensa_opcode opc) |
796 | { |
797 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
798 | |
799 | CHECK_OPCODE(intisa, opc, XTENSA_UNDEFINED); |
800 | return intisa->opcodes[opc].num_funcUnit_uses; |
801 | } |
802 | |
803 | |
804 | xtensa_funcUnit_use *xtensa_opcode_funcUnit_use(xtensa_isa isa, |
805 | xtensa_opcode opc, int u) |
806 | { |
807 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
808 | |
809 | CHECK_OPCODE(intisa, opc, NULL); |
810 | if (u < 0 || u >= intisa->opcodes[opc].num_funcUnit_uses) { |
811 | xtisa_errno = xtensa_isa_bad_funcUnit; |
812 | sprintf(xtisa_error_msg, "invalid functional unit use number (%d); " |
813 | "opcode \"%s\" has %d" , u, intisa->opcodes[opc].name, |
814 | intisa->opcodes[opc].num_funcUnit_uses); |
815 | return NULL; |
816 | } |
817 | return &intisa->opcodes[opc].funcUnit_uses[u]; |
818 | } |
819 | |
820 | |
821 | /* Operand information. */ |
822 | |
823 | |
824 | #define CHECK_OPERAND(INTISA, OPC, ICLASS, OPND, ERRVAL) \ |
825 | do { \ |
826 | if ((OPND) < 0 || (OPND) >= (ICLASS)->num_operands) { \ |
827 | xtisa_errno = xtensa_isa_bad_operand; \ |
828 | sprintf(xtisa_error_msg, "invalid operand number (%d); " \ |
829 | "opcode \"%s\" has %d operands", (OPND), \ |
830 | (INTISA)->opcodes[(OPC)].name, (ICLASS)->num_operands); \ |
831 | return ERRVAL; \ |
832 | } \ |
833 | } while (0) |
834 | |
835 | |
836 | static xtensa_operand_internal *get_operand(xtensa_isa_internal *intisa, |
837 | xtensa_opcode opc, int opnd) |
838 | { |
839 | xtensa_iclass_internal *iclass; |
840 | int iclass_id, operand_id; |
841 | |
842 | CHECK_OPCODE(intisa, opc, NULL); |
843 | iclass_id = intisa->opcodes[opc].iclass_id; |
844 | iclass = &intisa->iclasses[iclass_id]; |
845 | CHECK_OPERAND(intisa, opc, iclass, opnd, NULL); |
846 | operand_id = iclass->operands[opnd].u.operand_id; |
847 | return &intisa->operands[operand_id]; |
848 | } |
849 | |
850 | |
851 | const char *xtensa_operand_name(xtensa_isa isa, xtensa_opcode opc, int opnd) |
852 | { |
853 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
854 | xtensa_operand_internal *intop; |
855 | |
856 | intop = get_operand(intisa, opc, opnd); |
857 | if (!intop) { |
858 | return NULL; |
859 | } |
860 | return intop->name; |
861 | } |
862 | |
863 | |
864 | int xtensa_operand_is_visible(xtensa_isa isa, xtensa_opcode opc, int opnd) |
865 | { |
866 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
867 | xtensa_iclass_internal *iclass; |
868 | int iclass_id, operand_id; |
869 | xtensa_operand_internal *intop; |
870 | |
871 | CHECK_OPCODE(intisa, opc, XTENSA_UNDEFINED); |
872 | iclass_id = intisa->opcodes[opc].iclass_id; |
873 | iclass = &intisa->iclasses[iclass_id]; |
874 | CHECK_OPERAND(intisa, opc, iclass, opnd, XTENSA_UNDEFINED); |
875 | |
876 | /* Special case for "sout" operands. */ |
877 | if (iclass->operands[opnd].inout == 's') { |
878 | return 0; |
879 | } |
880 | |
881 | operand_id = iclass->operands[opnd].u.operand_id; |
882 | intop = &intisa->operands[operand_id]; |
883 | |
884 | if ((intop->flags & XTENSA_OPERAND_IS_INVISIBLE) == 0) { |
885 | return 1; |
886 | } |
887 | return 0; |
888 | } |
889 | |
890 | |
891 | char xtensa_operand_inout(xtensa_isa isa, xtensa_opcode opc, int opnd) |
892 | { |
893 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
894 | xtensa_iclass_internal *iclass; |
895 | int iclass_id; |
896 | char inout; |
897 | |
898 | CHECK_OPCODE(intisa, opc, 0); |
899 | iclass_id = intisa->opcodes[opc].iclass_id; |
900 | iclass = &intisa->iclasses[iclass_id]; |
901 | CHECK_OPERAND(intisa, opc, iclass, opnd, 0); |
902 | inout = iclass->operands[opnd].inout; |
903 | |
904 | /* Special case for "sout" and "_sin" operands. */ |
905 | if (inout == 's') { |
906 | return 'o'; |
907 | } |
908 | if (inout == 't') { |
909 | return 'i'; |
910 | } |
911 | return inout; |
912 | } |
913 | |
914 | |
915 | int xtensa_operand_get_field(xtensa_isa isa, xtensa_opcode opc, int opnd, |
916 | xtensa_format fmt, int slot, |
917 | const xtensa_insnbuf slotbuf, uint32_t *valp) |
918 | { |
919 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
920 | xtensa_operand_internal *intop; |
921 | int slot_id; |
922 | xtensa_get_field_fn get_fn; |
923 | |
924 | intop = get_operand(intisa, opc, opnd); |
925 | if (!intop) { |
926 | return -1; |
927 | } |
928 | |
929 | CHECK_FORMAT(intisa, fmt, -1); |
930 | CHECK_SLOT(intisa, fmt, slot, -1); |
931 | |
932 | slot_id = intisa->formats[fmt].slot_id[slot]; |
933 | if (intop->field_id == XTENSA_UNDEFINED) { |
934 | xtisa_errno = xtensa_isa_no_field; |
935 | strcpy(xtisa_error_msg, "implicit operand has no field" ); |
936 | return -1; |
937 | } |
938 | get_fn = intisa->slots[slot_id].get_field_fns[intop->field_id]; |
939 | if (!get_fn) { |
940 | xtisa_errno = xtensa_isa_wrong_slot; |
941 | sprintf(xtisa_error_msg, |
942 | "operand \"%s\" does not exist in slot %d of format \"%s\"" , |
943 | intop->name, slot, intisa->formats[fmt].name); |
944 | return -1; |
945 | } |
946 | *valp = (*get_fn)(slotbuf); |
947 | return 0; |
948 | } |
949 | |
950 | |
951 | int xtensa_operand_set_field(xtensa_isa isa, xtensa_opcode opc, int opnd, |
952 | xtensa_format fmt, int slot, |
953 | xtensa_insnbuf slotbuf, uint32_t val) |
954 | { |
955 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
956 | xtensa_operand_internal *intop; |
957 | int slot_id; |
958 | xtensa_set_field_fn set_fn; |
959 | |
960 | intop = get_operand(intisa, opc, opnd); |
961 | if (!intop) { |
962 | return -1; |
963 | } |
964 | |
965 | CHECK_FORMAT(intisa, fmt, -1); |
966 | CHECK_SLOT(intisa, fmt, slot, -1); |
967 | |
968 | slot_id = intisa->formats[fmt].slot_id[slot]; |
969 | if (intop->field_id == XTENSA_UNDEFINED) { |
970 | xtisa_errno = xtensa_isa_no_field; |
971 | strcpy(xtisa_error_msg, "implicit operand has no field" ); |
972 | return -1; |
973 | } |
974 | set_fn = intisa->slots[slot_id].set_field_fns[intop->field_id]; |
975 | if (!set_fn) { |
976 | xtisa_errno = xtensa_isa_wrong_slot; |
977 | sprintf(xtisa_error_msg, |
978 | "operand \"%s\" does not exist in slot %d of format \"%s\"" , |
979 | intop->name, slot, intisa->formats[fmt].name); |
980 | return -1; |
981 | } |
982 | (*set_fn)(slotbuf, val); |
983 | return 0; |
984 | } |
985 | |
986 | |
987 | int xtensa_operand_encode(xtensa_isa isa, xtensa_opcode opc, int opnd, |
988 | uint32_t *valp) |
989 | { |
990 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
991 | xtensa_operand_internal *intop; |
992 | uint32_t test_val, orig_val; |
993 | |
994 | intop = get_operand(intisa, opc, opnd); |
995 | if (!intop) { |
996 | return -1; |
997 | } |
998 | |
999 | if (!intop->encode) { |
1000 | /* |
1001 | * This is a default operand for a field. How can we tell if the |
1002 | * value fits in the field? Write the value into the field, |
1003 | * read it back, and then make sure we get the same value. |
1004 | */ |
1005 | static xtensa_insnbuf tmpbuf; |
1006 | int slot_id; |
1007 | |
1008 | if (!tmpbuf) { |
1009 | tmpbuf = xtensa_insnbuf_alloc(isa); |
1010 | CHECK_ALLOC(tmpbuf, -1); |
1011 | } |
1012 | |
1013 | /* |
1014 | * A default operand is always associated with a field, |
1015 | * but check just to be sure.... |
1016 | */ |
1017 | if (intop->field_id == XTENSA_UNDEFINED) { |
1018 | xtisa_errno = xtensa_isa_internal_error; |
1019 | strcpy(xtisa_error_msg, "operand has no field" ); |
1020 | return -1; |
1021 | } |
1022 | |
1023 | /* Find some slot that includes the field. */ |
1024 | for (slot_id = 0; slot_id < intisa->num_slots; slot_id++) { |
1025 | xtensa_get_field_fn get_fn = |
1026 | intisa->slots[slot_id].get_field_fns[intop->field_id]; |
1027 | xtensa_set_field_fn set_fn = |
1028 | intisa->slots[slot_id].set_field_fns[intop->field_id]; |
1029 | |
1030 | if (get_fn && set_fn) { |
1031 | (*set_fn)(tmpbuf, *valp); |
1032 | return (*get_fn)(tmpbuf) != *valp; |
1033 | } |
1034 | } |
1035 | |
1036 | /* Couldn't find any slot containing the field.... */ |
1037 | xtisa_errno = xtensa_isa_no_field; |
1038 | strcpy(xtisa_error_msg, "field does not exist in any slot" ); |
1039 | return -1; |
1040 | } |
1041 | |
1042 | /* |
1043 | * Encode the value. In some cases, the encoding function may detect |
1044 | * errors, but most of the time the only way to determine if the value |
1045 | * was successfully encoded is to decode it and check if it matches |
1046 | * the original value. |
1047 | */ |
1048 | orig_val = *valp; |
1049 | if ((*intop->encode)(valp) || |
1050 | (test_val = *valp, (*intop->decode)(&test_val)) || |
1051 | test_val != orig_val) { |
1052 | xtisa_errno = xtensa_isa_bad_value; |
1053 | sprintf(xtisa_error_msg, "cannot encode operand value 0x%08x" , *valp); |
1054 | return -1; |
1055 | } |
1056 | |
1057 | return 0; |
1058 | } |
1059 | |
1060 | |
1061 | int xtensa_operand_decode(xtensa_isa isa, xtensa_opcode opc, int opnd, |
1062 | uint32_t *valp) |
1063 | { |
1064 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1065 | xtensa_operand_internal *intop; |
1066 | |
1067 | intop = get_operand(intisa, opc, opnd); |
1068 | if (!intop) { |
1069 | return -1; |
1070 | } |
1071 | |
1072 | /* Use identity function for "default" operands. */ |
1073 | if (!intop->decode) { |
1074 | return 0; |
1075 | } |
1076 | |
1077 | if ((*intop->decode)(valp)) { |
1078 | xtisa_errno = xtensa_isa_bad_value; |
1079 | sprintf(xtisa_error_msg, "cannot decode operand value 0x%08x" , *valp); |
1080 | return -1; |
1081 | } |
1082 | return 0; |
1083 | } |
1084 | |
1085 | |
1086 | int xtensa_operand_is_register(xtensa_isa isa, xtensa_opcode opc, int opnd) |
1087 | { |
1088 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1089 | xtensa_operand_internal *intop; |
1090 | |
1091 | intop = get_operand(intisa, opc, opnd); |
1092 | if (!intop) { |
1093 | return XTENSA_UNDEFINED; |
1094 | } |
1095 | |
1096 | if ((intop->flags & XTENSA_OPERAND_IS_REGISTER) != 0) { |
1097 | return 1; |
1098 | } |
1099 | return 0; |
1100 | } |
1101 | |
1102 | |
1103 | xtensa_regfile xtensa_operand_regfile(xtensa_isa isa, xtensa_opcode opc, |
1104 | int opnd) |
1105 | { |
1106 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1107 | xtensa_operand_internal *intop; |
1108 | |
1109 | intop = get_operand(intisa, opc, opnd); |
1110 | if (!intop) { |
1111 | return XTENSA_UNDEFINED; |
1112 | } |
1113 | |
1114 | return intop->regfile; |
1115 | } |
1116 | |
1117 | |
1118 | int xtensa_operand_num_regs(xtensa_isa isa, xtensa_opcode opc, int opnd) |
1119 | { |
1120 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1121 | xtensa_operand_internal *intop; |
1122 | |
1123 | intop = get_operand(intisa, opc, opnd); |
1124 | if (!intop) { |
1125 | return XTENSA_UNDEFINED; |
1126 | } |
1127 | |
1128 | return intop->num_regs; |
1129 | } |
1130 | |
1131 | |
1132 | int xtensa_operand_is_known_reg(xtensa_isa isa, xtensa_opcode opc, int opnd) |
1133 | { |
1134 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1135 | xtensa_operand_internal *intop; |
1136 | |
1137 | intop = get_operand(intisa, opc, opnd); |
1138 | if (!intop) { |
1139 | return XTENSA_UNDEFINED; |
1140 | } |
1141 | |
1142 | if ((intop->flags & XTENSA_OPERAND_IS_UNKNOWN) == 0) { |
1143 | return 1; |
1144 | } |
1145 | return 0; |
1146 | } |
1147 | |
1148 | |
1149 | int xtensa_operand_is_PCrelative(xtensa_isa isa, xtensa_opcode opc, int opnd) |
1150 | { |
1151 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1152 | xtensa_operand_internal *intop; |
1153 | |
1154 | intop = get_operand(intisa, opc, opnd); |
1155 | if (!intop) { |
1156 | return XTENSA_UNDEFINED; |
1157 | } |
1158 | |
1159 | if ((intop->flags & XTENSA_OPERAND_IS_PCRELATIVE) != 0) { |
1160 | return 1; |
1161 | } |
1162 | return 0; |
1163 | } |
1164 | |
1165 | |
1166 | int xtensa_operand_do_reloc(xtensa_isa isa, xtensa_opcode opc, int opnd, |
1167 | uint32_t *valp, uint32_t pc) |
1168 | { |
1169 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1170 | xtensa_operand_internal *intop; |
1171 | |
1172 | intop = get_operand(intisa, opc, opnd); |
1173 | if (!intop) { |
1174 | return -1; |
1175 | } |
1176 | |
1177 | if ((intop->flags & XTENSA_OPERAND_IS_PCRELATIVE) == 0) { |
1178 | return 0; |
1179 | } |
1180 | |
1181 | if (!intop->do_reloc) { |
1182 | xtisa_errno = xtensa_isa_internal_error; |
1183 | strcpy(xtisa_error_msg, "operand missing do_reloc function" ); |
1184 | return -1; |
1185 | } |
1186 | |
1187 | if ((*intop->do_reloc)(valp, pc)) { |
1188 | xtisa_errno = xtensa_isa_bad_value; |
1189 | sprintf(xtisa_error_msg, |
1190 | "do_reloc failed for value 0x%08x at PC 0x%08x" , *valp, pc); |
1191 | return -1; |
1192 | } |
1193 | |
1194 | return 0; |
1195 | } |
1196 | |
1197 | |
1198 | int xtensa_operand_undo_reloc(xtensa_isa isa, xtensa_opcode opc, int opnd, |
1199 | uint32_t *valp, uint32_t pc) |
1200 | { |
1201 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1202 | xtensa_operand_internal *intop; |
1203 | |
1204 | intop = get_operand(intisa, opc, opnd); |
1205 | if (!intop) { |
1206 | return -1; |
1207 | } |
1208 | |
1209 | if ((intop->flags & XTENSA_OPERAND_IS_PCRELATIVE) == 0) { |
1210 | return 0; |
1211 | } |
1212 | |
1213 | if (!intop->undo_reloc) { |
1214 | xtisa_errno = xtensa_isa_internal_error; |
1215 | strcpy(xtisa_error_msg, "operand missing undo_reloc function" ); |
1216 | return -1; |
1217 | } |
1218 | |
1219 | if ((*intop->undo_reloc)(valp, pc)) { |
1220 | xtisa_errno = xtensa_isa_bad_value; |
1221 | sprintf(xtisa_error_msg, |
1222 | "undo_reloc failed for value 0x%08x at PC 0x%08x" , *valp, pc); |
1223 | return -1; |
1224 | } |
1225 | |
1226 | return 0; |
1227 | } |
1228 | |
1229 | |
1230 | /* State Operands. */ |
1231 | |
1232 | |
1233 | #define CHECK_STATE_OPERAND(INTISA, OPC, ICLASS, STOP, ERRVAL) \ |
1234 | do { \ |
1235 | if ((STOP) < 0 || (STOP) >= (ICLASS)->num_stateOperands) { \ |
1236 | xtisa_errno = xtensa_isa_bad_operand; \ |
1237 | sprintf(xtisa_error_msg, "invalid state operand number (%d); " \ |
1238 | "opcode \"%s\" has %d state operands", (STOP), \ |
1239 | (INTISA)->opcodes[(OPC)].name, \ |
1240 | (ICLASS)->num_stateOperands); \ |
1241 | return ERRVAL; \ |
1242 | } \ |
1243 | } while (0) |
1244 | |
1245 | |
1246 | xtensa_state xtensa_stateOperand_state(xtensa_isa isa, xtensa_opcode opc, |
1247 | int stOp) |
1248 | { |
1249 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1250 | xtensa_iclass_internal *iclass; |
1251 | int iclass_id; |
1252 | |
1253 | CHECK_OPCODE(intisa, opc, XTENSA_UNDEFINED); |
1254 | iclass_id = intisa->opcodes[opc].iclass_id; |
1255 | iclass = &intisa->iclasses[iclass_id]; |
1256 | CHECK_STATE_OPERAND(intisa, opc, iclass, stOp, XTENSA_UNDEFINED); |
1257 | return iclass->stateOperands[stOp].u.state; |
1258 | } |
1259 | |
1260 | |
1261 | char xtensa_stateOperand_inout(xtensa_isa isa, xtensa_opcode opc, int stOp) |
1262 | { |
1263 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1264 | xtensa_iclass_internal *iclass; |
1265 | int iclass_id; |
1266 | |
1267 | CHECK_OPCODE(intisa, opc, 0); |
1268 | iclass_id = intisa->opcodes[opc].iclass_id; |
1269 | iclass = &intisa->iclasses[iclass_id]; |
1270 | CHECK_STATE_OPERAND(intisa, opc, iclass, stOp, 0); |
1271 | return iclass->stateOperands[stOp].inout; |
1272 | } |
1273 | |
1274 | |
1275 | /* Interface Operands. */ |
1276 | |
1277 | |
1278 | #define CHECK_INTERFACE_OPERAND(INTISA, OPC, ICLASS, IFOP, ERRVAL) \ |
1279 | do { \ |
1280 | if ((IFOP) < 0 || (IFOP) >= (ICLASS)->num_interfaceOperands) { \ |
1281 | xtisa_errno = xtensa_isa_bad_operand; \ |
1282 | sprintf(xtisa_error_msg, \ |
1283 | "invalid interface operand number (%d); " \ |
1284 | "opcode \"%s\" has %d interface operands", (IFOP), \ |
1285 | (INTISA)->opcodes[(OPC)].name, \ |
1286 | (ICLASS)->num_interfaceOperands); \ |
1287 | return ERRVAL; \ |
1288 | } \ |
1289 | } while (0) |
1290 | |
1291 | |
1292 | xtensa_interface xtensa_interfaceOperand_interface(xtensa_isa isa, |
1293 | xtensa_opcode opc, |
1294 | int ifOp) |
1295 | { |
1296 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1297 | xtensa_iclass_internal *iclass; |
1298 | int iclass_id; |
1299 | |
1300 | CHECK_OPCODE(intisa, opc, XTENSA_UNDEFINED); |
1301 | iclass_id = intisa->opcodes[opc].iclass_id; |
1302 | iclass = &intisa->iclasses[iclass_id]; |
1303 | CHECK_INTERFACE_OPERAND(intisa, opc, iclass, ifOp, XTENSA_UNDEFINED); |
1304 | return iclass->interfaceOperands[ifOp]; |
1305 | } |
1306 | |
1307 | |
1308 | /* Register Files. */ |
1309 | |
1310 | |
1311 | #define CHECK_REGFILE(INTISA, RF, ERRVAL) \ |
1312 | do { \ |
1313 | if ((RF) < 0 || (RF) >= (INTISA)->num_regfiles) { \ |
1314 | xtisa_errno = xtensa_isa_bad_regfile; \ |
1315 | strcpy(xtisa_error_msg, "invalid regfile specifier"); \ |
1316 | return ERRVAL; \ |
1317 | } \ |
1318 | } while (0) |
1319 | |
1320 | |
1321 | xtensa_regfile xtensa_regfile_lookup(xtensa_isa isa, const char *name) |
1322 | { |
1323 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1324 | int n; |
1325 | |
1326 | if (!name || !*name) { |
1327 | xtisa_errno = xtensa_isa_bad_regfile; |
1328 | strcpy(xtisa_error_msg, "invalid regfile name" ); |
1329 | return XTENSA_UNDEFINED; |
1330 | } |
1331 | |
1332 | /* The expected number of regfiles is small; use a linear search. */ |
1333 | for (n = 0; n < intisa->num_regfiles; n++) { |
1334 | if (!strcmp(intisa->regfiles[n].name, name)) { |
1335 | return n; |
1336 | } |
1337 | } |
1338 | |
1339 | xtisa_errno = xtensa_isa_bad_regfile; |
1340 | sprintf(xtisa_error_msg, "regfile \"%s\" not recognized" , name); |
1341 | return XTENSA_UNDEFINED; |
1342 | } |
1343 | |
1344 | |
1345 | xtensa_regfile xtensa_regfile_lookup_shortname(xtensa_isa isa, |
1346 | const char *shortname) |
1347 | { |
1348 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1349 | int n; |
1350 | |
1351 | if (!shortname || !*shortname) { |
1352 | xtisa_errno = xtensa_isa_bad_regfile; |
1353 | strcpy(xtisa_error_msg, "invalid regfile shortname" ); |
1354 | return XTENSA_UNDEFINED; |
1355 | } |
1356 | |
1357 | /* The expected number of regfiles is small; use a linear search. */ |
1358 | for (n = 0; n < intisa->num_regfiles; n++) { |
1359 | /* |
1360 | * Ignore regfile views since they always have the same shortnames |
1361 | * as their parents. |
1362 | */ |
1363 | if (intisa->regfiles[n].parent != n) { |
1364 | continue; |
1365 | } |
1366 | if (!strcmp(intisa->regfiles[n].shortname, shortname)) { |
1367 | return n; |
1368 | } |
1369 | } |
1370 | |
1371 | xtisa_errno = xtensa_isa_bad_regfile; |
1372 | sprintf(xtisa_error_msg, "regfile shortname \"%s\" not recognized" , |
1373 | shortname); |
1374 | return XTENSA_UNDEFINED; |
1375 | } |
1376 | |
1377 | |
1378 | const char *xtensa_regfile_name(xtensa_isa isa, xtensa_regfile rf) |
1379 | { |
1380 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1381 | |
1382 | CHECK_REGFILE(intisa, rf, NULL); |
1383 | return intisa->regfiles[rf].name; |
1384 | } |
1385 | |
1386 | |
1387 | const char *xtensa_regfile_shortname(xtensa_isa isa, xtensa_regfile rf) |
1388 | { |
1389 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1390 | |
1391 | CHECK_REGFILE(intisa, rf, NULL); |
1392 | return intisa->regfiles[rf].shortname; |
1393 | } |
1394 | |
1395 | |
1396 | xtensa_regfile xtensa_regfile_view_parent(xtensa_isa isa, xtensa_regfile rf) |
1397 | { |
1398 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1399 | |
1400 | CHECK_REGFILE(intisa, rf, XTENSA_UNDEFINED); |
1401 | return intisa->regfiles[rf].parent; |
1402 | } |
1403 | |
1404 | |
1405 | int xtensa_regfile_num_bits(xtensa_isa isa, xtensa_regfile rf) |
1406 | { |
1407 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1408 | |
1409 | CHECK_REGFILE(intisa, rf, XTENSA_UNDEFINED); |
1410 | return intisa->regfiles[rf].num_bits; |
1411 | } |
1412 | |
1413 | |
1414 | int xtensa_regfile_num_entries(xtensa_isa isa, xtensa_regfile rf) |
1415 | { |
1416 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1417 | |
1418 | CHECK_REGFILE(intisa, rf, XTENSA_UNDEFINED); |
1419 | return intisa->regfiles[rf].num_entries; |
1420 | } |
1421 | |
1422 | |
1423 | /* Processor States. */ |
1424 | |
1425 | |
1426 | #define CHECK_STATE(INTISA, ST, ERRVAL) \ |
1427 | do { \ |
1428 | if ((ST) < 0 || (ST) >= (INTISA)->num_states) { \ |
1429 | xtisa_errno = xtensa_isa_bad_state; \ |
1430 | strcpy(xtisa_error_msg, "invalid state specifier"); \ |
1431 | return ERRVAL; \ |
1432 | } \ |
1433 | } while (0) |
1434 | |
1435 | |
1436 | xtensa_state xtensa_state_lookup(xtensa_isa isa, const char *name) |
1437 | { |
1438 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1439 | xtensa_lookup_entry entry, *result = 0; |
1440 | |
1441 | if (!name || !*name) { |
1442 | xtisa_errno = xtensa_isa_bad_state; |
1443 | strcpy(xtisa_error_msg, "invalid state name" ); |
1444 | return XTENSA_UNDEFINED; |
1445 | } |
1446 | |
1447 | if (intisa->num_states != 0) { |
1448 | entry.key = name; |
1449 | result = bsearch(&entry, intisa->state_lookup_table, |
1450 | intisa->num_states, sizeof(xtensa_lookup_entry), |
1451 | xtensa_isa_name_compare); |
1452 | } |
1453 | |
1454 | if (!result) { |
1455 | xtisa_errno = xtensa_isa_bad_state; |
1456 | sprintf(xtisa_error_msg, "state \"%s\" not recognized" , name); |
1457 | return XTENSA_UNDEFINED; |
1458 | } |
1459 | |
1460 | return result->u.state; |
1461 | } |
1462 | |
1463 | |
1464 | const char *xtensa_state_name(xtensa_isa isa, xtensa_state st) |
1465 | { |
1466 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1467 | |
1468 | CHECK_STATE(intisa, st, NULL); |
1469 | return intisa->states[st].name; |
1470 | } |
1471 | |
1472 | |
1473 | int xtensa_state_num_bits(xtensa_isa isa, xtensa_state st) |
1474 | { |
1475 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1476 | |
1477 | CHECK_STATE(intisa, st, XTENSA_UNDEFINED); |
1478 | return intisa->states[st].num_bits; |
1479 | } |
1480 | |
1481 | |
1482 | int xtensa_state_is_exported(xtensa_isa isa, xtensa_state st) |
1483 | { |
1484 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1485 | |
1486 | CHECK_STATE(intisa, st, XTENSA_UNDEFINED); |
1487 | if ((intisa->states[st].flags & XTENSA_STATE_IS_EXPORTED) != 0) { |
1488 | return 1; |
1489 | } |
1490 | return 0; |
1491 | } |
1492 | |
1493 | |
1494 | int xtensa_state_is_shared_or(xtensa_isa isa, xtensa_state st) |
1495 | { |
1496 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1497 | |
1498 | CHECK_STATE(intisa, st, XTENSA_UNDEFINED); |
1499 | if ((intisa->states[st].flags & XTENSA_STATE_IS_SHARED_OR) != 0) { |
1500 | return 1; |
1501 | } |
1502 | return 0; |
1503 | } |
1504 | |
1505 | |
1506 | /* Sysregs. */ |
1507 | |
1508 | |
1509 | #define CHECK_SYSREG(INTISA, SYSREG, ERRVAL) \ |
1510 | do { \ |
1511 | if ((SYSREG) < 0 || (SYSREG) >= (INTISA)->num_sysregs) { \ |
1512 | xtisa_errno = xtensa_isa_bad_sysreg; \ |
1513 | strcpy(xtisa_error_msg, "invalid sysreg specifier"); \ |
1514 | return ERRVAL; \ |
1515 | } \ |
1516 | } while (0) |
1517 | |
1518 | |
1519 | xtensa_sysreg xtensa_sysreg_lookup(xtensa_isa isa, int num, int is_user) |
1520 | { |
1521 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1522 | |
1523 | if (is_user != 0) { |
1524 | is_user = 1; |
1525 | } |
1526 | |
1527 | if (num < 0 || num > intisa->max_sysreg_num[is_user] || |
1528 | intisa->sysreg_table[is_user][num] == XTENSA_UNDEFINED) { |
1529 | xtisa_errno = xtensa_isa_bad_sysreg; |
1530 | strcpy(xtisa_error_msg, "sysreg not recognized" ); |
1531 | return XTENSA_UNDEFINED; |
1532 | } |
1533 | |
1534 | return intisa->sysreg_table[is_user][num]; |
1535 | } |
1536 | |
1537 | |
1538 | xtensa_sysreg xtensa_sysreg_lookup_name(xtensa_isa isa, const char *name) |
1539 | { |
1540 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1541 | xtensa_lookup_entry entry, *result = 0; |
1542 | |
1543 | if (!name || !*name) { |
1544 | xtisa_errno = xtensa_isa_bad_sysreg; |
1545 | strcpy(xtisa_error_msg, "invalid sysreg name" ); |
1546 | return XTENSA_UNDEFINED; |
1547 | } |
1548 | |
1549 | if (intisa->num_sysregs != 0) { |
1550 | entry.key = name; |
1551 | result = bsearch(&entry, intisa->sysreg_lookup_table, |
1552 | intisa->num_sysregs, sizeof(xtensa_lookup_entry), |
1553 | xtensa_isa_name_compare); |
1554 | } |
1555 | |
1556 | if (!result) { |
1557 | xtisa_errno = xtensa_isa_bad_sysreg; |
1558 | sprintf(xtisa_error_msg, "sysreg \"%s\" not recognized" , name); |
1559 | return XTENSA_UNDEFINED; |
1560 | } |
1561 | |
1562 | return result->u.sysreg; |
1563 | } |
1564 | |
1565 | |
1566 | const char *xtensa_sysreg_name(xtensa_isa isa, xtensa_sysreg sysreg) |
1567 | { |
1568 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1569 | |
1570 | CHECK_SYSREG(intisa, sysreg, NULL); |
1571 | return intisa->sysregs[sysreg].name; |
1572 | } |
1573 | |
1574 | |
1575 | int xtensa_sysreg_number(xtensa_isa isa, xtensa_sysreg sysreg) |
1576 | { |
1577 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1578 | |
1579 | CHECK_SYSREG(intisa, sysreg, XTENSA_UNDEFINED); |
1580 | return intisa->sysregs[sysreg].number; |
1581 | } |
1582 | |
1583 | |
1584 | int xtensa_sysreg_is_user(xtensa_isa isa, xtensa_sysreg sysreg) |
1585 | { |
1586 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1587 | |
1588 | CHECK_SYSREG(intisa, sysreg, XTENSA_UNDEFINED); |
1589 | if (intisa->sysregs[sysreg].is_user) { |
1590 | return 1; |
1591 | } |
1592 | return 0; |
1593 | } |
1594 | |
1595 | |
1596 | /* Interfaces. */ |
1597 | |
1598 | |
1599 | #define CHECK_INTERFACE(INTISA, INTF, ERRVAL) \ |
1600 | do { \ |
1601 | if ((INTF) < 0 || (INTF) >= (INTISA)->num_interfaces) { \ |
1602 | xtisa_errno = xtensa_isa_bad_interface; \ |
1603 | strcpy(xtisa_error_msg, "invalid interface specifier"); \ |
1604 | return ERRVAL; \ |
1605 | } \ |
1606 | } while (0) |
1607 | |
1608 | |
1609 | xtensa_interface xtensa_interface_lookup(xtensa_isa isa, const char *ifname) |
1610 | { |
1611 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1612 | xtensa_lookup_entry entry, *result = 0; |
1613 | |
1614 | if (!ifname || !*ifname) { |
1615 | xtisa_errno = xtensa_isa_bad_interface; |
1616 | strcpy(xtisa_error_msg, "invalid interface name" ); |
1617 | return XTENSA_UNDEFINED; |
1618 | } |
1619 | |
1620 | if (intisa->num_interfaces != 0) { |
1621 | entry.key = ifname; |
1622 | result = bsearch(&entry, intisa->interface_lookup_table, |
1623 | intisa->num_interfaces, sizeof(xtensa_lookup_entry), |
1624 | xtensa_isa_name_compare); |
1625 | } |
1626 | |
1627 | if (!result) { |
1628 | xtisa_errno = xtensa_isa_bad_interface; |
1629 | sprintf(xtisa_error_msg, "interface \"%s\" not recognized" , ifname); |
1630 | return XTENSA_UNDEFINED; |
1631 | } |
1632 | |
1633 | return result->u.intf; |
1634 | } |
1635 | |
1636 | |
1637 | const char *xtensa_interface_name(xtensa_isa isa, xtensa_interface intf) |
1638 | { |
1639 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1640 | |
1641 | CHECK_INTERFACE(intisa, intf, NULL); |
1642 | return intisa->interfaces[intf].name; |
1643 | } |
1644 | |
1645 | |
1646 | int xtensa_interface_num_bits(xtensa_isa isa, xtensa_interface intf) |
1647 | { |
1648 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1649 | |
1650 | CHECK_INTERFACE(intisa, intf, XTENSA_UNDEFINED); |
1651 | return intisa->interfaces[intf].num_bits; |
1652 | } |
1653 | |
1654 | |
1655 | char xtensa_interface_inout(xtensa_isa isa, xtensa_interface intf) |
1656 | { |
1657 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1658 | |
1659 | CHECK_INTERFACE(intisa, intf, 0); |
1660 | return intisa->interfaces[intf].inout; |
1661 | } |
1662 | |
1663 | |
1664 | int xtensa_interface_has_side_effect(xtensa_isa isa, xtensa_interface intf) |
1665 | { |
1666 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1667 | |
1668 | CHECK_INTERFACE(intisa, intf, XTENSA_UNDEFINED); |
1669 | if ((intisa->interfaces[intf].flags & |
1670 | XTENSA_INTERFACE_HAS_SIDE_EFFECT) != 0) { |
1671 | return 1; |
1672 | } |
1673 | return 0; |
1674 | } |
1675 | |
1676 | |
1677 | int xtensa_interface_class_id(xtensa_isa isa, xtensa_interface intf) |
1678 | { |
1679 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1680 | |
1681 | CHECK_INTERFACE(intisa, intf, XTENSA_UNDEFINED); |
1682 | return intisa->interfaces[intf].class_id; |
1683 | } |
1684 | |
1685 | |
1686 | /* Functional Units. */ |
1687 | |
1688 | |
1689 | #define CHECK_FUNCUNIT(INTISA, FUN, ERRVAL) \ |
1690 | do { \ |
1691 | if ((FUN) < 0 || (FUN) >= (INTISA)->num_funcUnits) { \ |
1692 | xtisa_errno = xtensa_isa_bad_funcUnit; \ |
1693 | strcpy(xtisa_error_msg, "invalid functional unit specifier"); \ |
1694 | return ERRVAL; \ |
1695 | } \ |
1696 | } while (0) |
1697 | |
1698 | |
1699 | xtensa_funcUnit xtensa_funcUnit_lookup(xtensa_isa isa, const char *fname) |
1700 | { |
1701 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1702 | xtensa_lookup_entry entry, *result = 0; |
1703 | |
1704 | if (!fname || !*fname) { |
1705 | xtisa_errno = xtensa_isa_bad_funcUnit; |
1706 | strcpy(xtisa_error_msg, "invalid functional unit name" ); |
1707 | return XTENSA_UNDEFINED; |
1708 | } |
1709 | |
1710 | if (intisa->num_funcUnits != 0) { |
1711 | entry.key = fname; |
1712 | result = bsearch(&entry, intisa->funcUnit_lookup_table, |
1713 | intisa->num_funcUnits, sizeof(xtensa_lookup_entry), |
1714 | xtensa_isa_name_compare); |
1715 | } |
1716 | |
1717 | if (!result) { |
1718 | xtisa_errno = xtensa_isa_bad_funcUnit; |
1719 | sprintf(xtisa_error_msg, |
1720 | "functional unit \"%s\" not recognized" , fname); |
1721 | return XTENSA_UNDEFINED; |
1722 | } |
1723 | |
1724 | return result->u.fun; |
1725 | } |
1726 | |
1727 | |
1728 | const char *xtensa_funcUnit_name(xtensa_isa isa, xtensa_funcUnit fun) |
1729 | { |
1730 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1731 | |
1732 | CHECK_FUNCUNIT(intisa, fun, NULL); |
1733 | return intisa->funcUnits[fun].name; |
1734 | } |
1735 | |
1736 | |
1737 | int xtensa_funcUnit_num_copies(xtensa_isa isa, xtensa_funcUnit fun) |
1738 | { |
1739 | xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; |
1740 | |
1741 | CHECK_FUNCUNIT(intisa, fun, XTENSA_UNDEFINED); |
1742 | return intisa->funcUnits[fun].num_copies; |
1743 | } |
1744 | |