Commit | Line | Data |
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e0001a05 | 1 | /* Configurable Xtensa ISA support. |
219d1afa | 2 | Copyright (C) 2003-2018 Free Software Foundation, Inc. |
e0001a05 NC |
3 | |
4 | This file is part of BFD, the Binary File Descriptor library. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 8 | the Free Software Foundation; either version 3 of the License, or |
e0001a05 NC |
9 | (at your option) any later version. |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
19 | MA 02110-1301, USA. */ | |
e0001a05 | 20 | |
43cd72b9 | 21 | #include "sysdep.h" |
3db64b00 | 22 | #include "bfd.h" |
43cd72b9 | 23 | #include "libbfd.h" |
e0001a05 NC |
24 | #include "xtensa-isa.h" |
25 | #include "xtensa-isa-internal.h" | |
26 | ||
43cd72b9 BW |
27 | xtensa_isa_status xtisa_errno; |
28 | char xtisa_error_msg[1024]; | |
29 | ||
30 | ||
31 | xtensa_isa_status | |
32 | xtensa_isa_errno (xtensa_isa isa __attribute__ ((unused))) | |
33 | { | |
34 | return xtisa_errno; | |
35 | } | |
36 | ||
e0001a05 | 37 | |
43cd72b9 BW |
38 | char * |
39 | xtensa_isa_error_msg (xtensa_isa isa __attribute__ ((unused))) | |
e0001a05 | 40 | { |
43cd72b9 BW |
41 | return xtisa_error_msg; |
42 | } | |
e0001a05 | 43 | |
43cd72b9 BW |
44 | |
45 | #define CHECK_ALLOC(MEM,ERRVAL) \ | |
46 | do { \ | |
47 | if ((MEM) == 0) \ | |
48 | { \ | |
49 | xtisa_errno = xtensa_isa_out_of_memory; \ | |
50 | strcpy (xtisa_error_msg, "out of memory"); \ | |
51 | return (ERRVAL); \ | |
52 | } \ | |
53 | } while (0) | |
54 | ||
55 | #define CHECK_ALLOC_FOR_INIT(MEM,ERRVAL,ERRNO_P,ERROR_MSG_P) \ | |
56 | do { \ | |
57 | if ((MEM) == 0) \ | |
58 | { \ | |
59 | xtisa_errno = xtensa_isa_out_of_memory; \ | |
60 | strcpy (xtisa_error_msg, "out of memory"); \ | |
61 | if (ERRNO_P) *(ERRNO_P) = xtisa_errno; \ | |
62 | if (ERROR_MSG_P) *(ERROR_MSG_P) = xtisa_error_msg; \ | |
63 | return (ERRVAL); \ | |
64 | } \ | |
65 | } while (0) | |
66 | ||
1fbc7e7a | 67 | |
43cd72b9 BW |
68 | \f |
69 | /* Instruction buffers. */ | |
70 | ||
71 | int | |
72 | xtensa_insnbuf_size (xtensa_isa isa) | |
73 | { | |
74 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
75 | return intisa->insnbuf_size; | |
e0001a05 NC |
76 | } |
77 | ||
78 | ||
43cd72b9 BW |
79 | xtensa_insnbuf |
80 | xtensa_insnbuf_alloc (xtensa_isa isa) | |
81 | { | |
82 | xtensa_insnbuf result = (xtensa_insnbuf) | |
83 | malloc (xtensa_insnbuf_size (isa) * sizeof (xtensa_insnbuf_word)); | |
84 | CHECK_ALLOC (result, 0); | |
85 | return result; | |
86 | } | |
87 | ||
88 | ||
89 | void | |
90 | xtensa_insnbuf_free (xtensa_isa isa __attribute__ ((unused)), | |
91 | xtensa_insnbuf buf) | |
92 | { | |
93 | free (buf); | |
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 | static inline int | |
102 | byte_to_word_index (int byte_index) | |
103 | { | |
104 | return byte_index / sizeof (xtensa_insnbuf_word); | |
105 | } | |
106 | ||
107 | ||
108 | static inline int | |
109 | byte_to_bit_index (int byte_index) | |
110 | { | |
111 | return (byte_index & 0x3) * 8; | |
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 | int | |
f075ee0c AM |
125 | xtensa_insnbuf_to_chars (xtensa_isa isa, |
126 | const xtensa_insnbuf insn, | |
127 | unsigned char *cp, | |
43cd72b9 BW |
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 | if (intisa->is_big_endian) | |
139 | { | |
140 | start = insn_size - 1; | |
141 | increment = -1; | |
142 | } | |
143 | else | |
144 | { | |
145 | start = 0; | |
146 | increment = 1; | |
147 | } | |
148 | ||
149 | /* Find the instruction format. Do nothing if the buffer does not contain | |
150 | a valid instruction since we need to know how many bytes to copy. */ | |
151 | fmt = xtensa_format_decode (isa, insn); | |
152 | if (fmt == XTENSA_UNDEFINED) | |
153 | return XTENSA_UNDEFINED; | |
154 | ||
155 | byte_count = xtensa_format_length (isa, fmt); | |
156 | if (byte_count == XTENSA_UNDEFINED) | |
157 | return XTENSA_UNDEFINED; | |
158 | ||
159 | if (byte_count > num_chars) | |
160 | { | |
161 | xtisa_errno = xtensa_isa_buffer_overflow; | |
162 | strcpy (xtisa_error_msg, "output buffer too small for instruction"); | |
163 | return XTENSA_UNDEFINED; | |
164 | } | |
165 | ||
166 | fence_post = start + (byte_count * increment); | |
167 | ||
168 | for (i = start; i != fence_post; i += increment, ++cp) | |
169 | { | |
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 | /* Inward conversion from byte stream to xtensa_insnbuf. See | |
181 | xtensa_insnbuf_to_chars for a discussion of why this is complicated | |
182 | by endianness. */ | |
68ffbac6 | 183 | |
43cd72b9 | 184 | void |
f075ee0c AM |
185 | xtensa_insnbuf_from_chars (xtensa_isa isa, |
186 | xtensa_insnbuf insn, | |
187 | const unsigned char *cp, | |
43cd72b9 BW |
188 | int num_chars) |
189 | { | |
190 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
191 | int max_size, insn_size, fence_post, start, increment, i; | |
192 | ||
193 | max_size = xtensa_isa_maxlength (isa); | |
194 | ||
195 | /* Decode the instruction length so we know how many bytes to read. */ | |
196 | insn_size = (intisa->length_decode_fn) (cp); | |
197 | if (insn_size == XTENSA_UNDEFINED) | |
198 | { | |
199 | /* This should never happen when the byte stream contains a | |
200 | valid instruction. Just read the maximum number of bytes.... */ | |
201 | insn_size = max_size; | |
202 | } | |
203 | ||
204 | if (num_chars == 0 || num_chars > insn_size) | |
205 | num_chars = insn_size; | |
206 | ||
207 | if (intisa->is_big_endian) | |
208 | { | |
209 | start = max_size - 1; | |
210 | increment = -1; | |
211 | } | |
212 | else | |
213 | { | |
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 | { | |
223 | int word_inx = byte_to_word_index (i); | |
224 | int bit_inx = byte_to_bit_index (i); | |
225 | ||
226 | insn[word_inx] |= (*cp & 0xff) << bit_inx; | |
227 | } | |
228 | } | |
229 | ||
230 | ||
231 | \f | |
232 | /* ISA information. */ | |
233 | ||
234 | extern xtensa_isa_internal xtensa_modules; | |
235 | ||
e0001a05 | 236 | xtensa_isa |
43cd72b9 | 237 | xtensa_isa_init (xtensa_isa_status *errno_p, char **error_msg_p) |
e0001a05 | 238 | { |
43cd72b9 BW |
239 | xtensa_isa_internal *isa = &xtensa_modules; |
240 | int n, is_user; | |
241 | ||
242 | /* Set up the opcode name lookup table. */ | |
243 | isa->opname_lookup_table = | |
244 | bfd_malloc (isa->num_opcodes * sizeof (xtensa_lookup_entry)); | |
245 | CHECK_ALLOC_FOR_INIT (isa->opname_lookup_table, NULL, errno_p, error_msg_p); | |
246 | for (n = 0; n < isa->num_opcodes; n++) | |
247 | { | |
248 | isa->opname_lookup_table[n].key = isa->opcodes[n].name; | |
249 | isa->opname_lookup_table[n].u.opcode = n; | |
250 | } | |
251 | qsort (isa->opname_lookup_table, isa->num_opcodes, | |
252 | sizeof (xtensa_lookup_entry), xtensa_isa_name_compare); | |
e0001a05 | 253 | |
43cd72b9 BW |
254 | /* Set up the state name lookup table. */ |
255 | isa->state_lookup_table = | |
256 | bfd_malloc (isa->num_states * sizeof (xtensa_lookup_entry)); | |
257 | CHECK_ALLOC_FOR_INIT (isa->state_lookup_table, NULL, errno_p, error_msg_p); | |
258 | for (n = 0; n < isa->num_states; n++) | |
e0001a05 | 259 | { |
43cd72b9 BW |
260 | isa->state_lookup_table[n].key = isa->states[n].name; |
261 | isa->state_lookup_table[n].u.state = n; | |
262 | } | |
263 | qsort (isa->state_lookup_table, isa->num_states, | |
264 | sizeof (xtensa_lookup_entry), xtensa_isa_name_compare); | |
265 | ||
266 | /* Set up the sysreg name lookup table. */ | |
267 | isa->sysreg_lookup_table = | |
268 | bfd_malloc (isa->num_sysregs * sizeof (xtensa_lookup_entry)); | |
269 | CHECK_ALLOC_FOR_INIT (isa->sysreg_lookup_table, NULL, errno_p, error_msg_p); | |
270 | for (n = 0; n < isa->num_sysregs; n++) | |
271 | { | |
272 | isa->sysreg_lookup_table[n].key = isa->sysregs[n].name; | |
273 | isa->sysreg_lookup_table[n].u.sysreg = n; | |
274 | } | |
275 | qsort (isa->sysreg_lookup_table, isa->num_sysregs, | |
276 | sizeof (xtensa_lookup_entry), xtensa_isa_name_compare); | |
277 | ||
278 | /* Set up the user & system sysreg number tables. */ | |
279 | for (is_user = 0; is_user < 2; is_user++) | |
280 | { | |
281 | isa->sysreg_table[is_user] = | |
282 | bfd_malloc ((isa->max_sysreg_num[is_user] + 1) | |
283 | * sizeof (xtensa_sysreg)); | |
284 | CHECK_ALLOC_FOR_INIT (isa->sysreg_table[is_user], NULL, | |
285 | errno_p, error_msg_p); | |
286 | ||
287 | for (n = 0; n <= isa->max_sysreg_num[is_user]; n++) | |
288 | isa->sysreg_table[is_user][n] = XTENSA_UNDEFINED; | |
289 | } | |
290 | for (n = 0; n < isa->num_sysregs; n++) | |
291 | { | |
292 | xtensa_sysreg_internal *sreg = &isa->sysregs[n]; | |
293 | is_user = sreg->is_user; | |
294 | ||
d84ed528 MF |
295 | if (sreg->number >= 0) |
296 | isa->sysreg_table[is_user][sreg->number] = n; | |
43cd72b9 BW |
297 | } |
298 | ||
299 | /* Set up the interface lookup table. */ | |
68ffbac6 | 300 | isa->interface_lookup_table = |
43cd72b9 BW |
301 | bfd_malloc (isa->num_interfaces * sizeof (xtensa_lookup_entry)); |
302 | CHECK_ALLOC_FOR_INIT (isa->interface_lookup_table, NULL, errno_p, | |
303 | error_msg_p); | |
304 | for (n = 0; n < isa->num_interfaces; n++) | |
305 | { | |
306 | isa->interface_lookup_table[n].key = isa->interfaces[n].name; | |
307 | isa->interface_lookup_table[n].u.intf = n; | |
308 | } | |
309 | qsort (isa->interface_lookup_table, isa->num_interfaces, | |
310 | sizeof (xtensa_lookup_entry), xtensa_isa_name_compare); | |
311 | ||
312 | /* Set up the funcUnit lookup table. */ | |
68ffbac6 | 313 | isa->funcUnit_lookup_table = |
43cd72b9 BW |
314 | bfd_malloc (isa->num_funcUnits * sizeof (xtensa_lookup_entry)); |
315 | CHECK_ALLOC_FOR_INIT (isa->funcUnit_lookup_table, NULL, errno_p, | |
316 | error_msg_p); | |
317 | for (n = 0; n < isa->num_funcUnits; n++) | |
318 | { | |
319 | isa->funcUnit_lookup_table[n].key = isa->funcUnits[n].name; | |
320 | isa->funcUnit_lookup_table[n].u.fun = n; | |
321 | } | |
322 | qsort (isa->funcUnit_lookup_table, isa->num_funcUnits, | |
323 | sizeof (xtensa_lookup_entry), xtensa_isa_name_compare); | |
324 | ||
325 | isa->insnbuf_size = ((isa->insn_size + sizeof (xtensa_insnbuf_word) - 1) / | |
326 | sizeof (xtensa_insnbuf_word)); | |
327 | ||
328 | return (xtensa_isa) isa; | |
329 | } | |
330 | ||
331 | ||
332 | void | |
333 | xtensa_isa_free (xtensa_isa isa) | |
334 | { | |
335 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
336 | int n; | |
337 | ||
338 | /* With this version of the code, the xtensa_isa structure is not | |
339 | dynamically allocated, so this function is not essential. Free | |
340 | the memory allocated by xtensa_isa_init and restore the xtensa_isa | |
341 | structure to its initial state. */ | |
342 | ||
343 | if (intisa->opname_lookup_table) | |
344 | { | |
345 | free (intisa->opname_lookup_table); | |
346 | intisa->opname_lookup_table = 0; | |
e0001a05 NC |
347 | } |
348 | ||
43cd72b9 | 349 | if (intisa->state_lookup_table) |
e0001a05 | 350 | { |
43cd72b9 BW |
351 | free (intisa->state_lookup_table); |
352 | intisa->state_lookup_table = 0; | |
353 | } | |
354 | ||
355 | if (intisa->sysreg_lookup_table) | |
356 | { | |
357 | free (intisa->sysreg_lookup_table); | |
358 | intisa->sysreg_lookup_table = 0; | |
359 | } | |
360 | for (n = 0; n < 2; n++) | |
361 | { | |
362 | if (intisa->sysreg_table[n]) | |
e0001a05 | 363 | { |
43cd72b9 BW |
364 | free (intisa->sysreg_table[n]); |
365 | intisa->sysreg_table[n] = 0; | |
e0001a05 NC |
366 | } |
367 | } | |
43cd72b9 BW |
368 | |
369 | if (intisa->interface_lookup_table) | |
370 | { | |
371 | free (intisa->interface_lookup_table); | |
372 | intisa->interface_lookup_table = 0; | |
373 | } | |
374 | ||
375 | if (intisa->funcUnit_lookup_table) | |
376 | { | |
377 | free (intisa->funcUnit_lookup_table); | |
378 | intisa->funcUnit_lookup_table = 0; | |
379 | } | |
380 | } | |
381 | ||
382 | ||
383 | int | |
384 | xtensa_isa_name_compare (const void *v1, const void *v2) | |
385 | { | |
386 | xtensa_lookup_entry *e1 = (xtensa_lookup_entry *) v1; | |
387 | xtensa_lookup_entry *e2 = (xtensa_lookup_entry *) v2; | |
388 | ||
389 | return strcasecmp (e1->key, e2->key); | |
390 | } | |
391 | ||
392 | ||
393 | int | |
394 | xtensa_isa_maxlength (xtensa_isa isa) | |
395 | { | |
396 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
397 | return intisa->insn_size; | |
398 | } | |
399 | ||
400 | ||
401 | int | |
f075ee0c | 402 | xtensa_isa_length_from_chars (xtensa_isa isa, const unsigned char *cp) |
43cd72b9 BW |
403 | { |
404 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
405 | return (intisa->length_decode_fn) (cp); | |
406 | } | |
407 | ||
408 | ||
409 | int | |
68ffbac6 | 410 | xtensa_isa_num_pipe_stages (xtensa_isa isa) |
43cd72b9 | 411 | { |
43cd72b9 BW |
412 | xtensa_opcode opcode; |
413 | xtensa_funcUnit_use *use; | |
1fbc7e7a | 414 | int num_opcodes, num_uses; |
77cba8a3 BW |
415 | int i, stage; |
416 | static int max_stage = XTENSA_UNDEFINED; | |
417 | ||
418 | /* Only compute the value once. */ | |
419 | if (max_stage != XTENSA_UNDEFINED) | |
420 | return max_stage + 1; | |
43cd72b9 BW |
421 | |
422 | num_opcodes = xtensa_isa_num_opcodes (isa); | |
423 | for (opcode = 0; opcode < num_opcodes; opcode++) | |
424 | { | |
425 | num_uses = xtensa_opcode_num_funcUnit_uses (isa, opcode); | |
426 | for (i = 0; i < num_uses; i++) | |
427 | { | |
428 | use = xtensa_opcode_funcUnit_use (isa, opcode, i); | |
429 | stage = use->stage; | |
430 | if (stage > max_stage) | |
431 | max_stage = stage; | |
432 | } | |
433 | } | |
434 | ||
435 | return max_stage + 1; | |
436 | } | |
437 | ||
438 | ||
439 | int | |
440 | xtensa_isa_num_formats (xtensa_isa isa) | |
441 | { | |
442 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
443 | return intisa->num_formats; | |
444 | } | |
445 | ||
446 | ||
447 | int | |
448 | xtensa_isa_num_opcodes (xtensa_isa isa) | |
449 | { | |
450 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
451 | return intisa->num_opcodes; | |
452 | } | |
453 | ||
454 | ||
455 | int | |
456 | xtensa_isa_num_regfiles (xtensa_isa isa) | |
457 | { | |
458 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
459 | return intisa->num_regfiles; | |
460 | } | |
461 | ||
462 | ||
463 | int | |
464 | xtensa_isa_num_states (xtensa_isa isa) | |
465 | { | |
466 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
467 | return intisa->num_states; | |
468 | } | |
469 | ||
470 | ||
471 | int | |
472 | xtensa_isa_num_sysregs (xtensa_isa isa) | |
473 | { | |
474 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
475 | return intisa->num_sysregs; | |
476 | } | |
477 | ||
478 | ||
479 | int | |
480 | xtensa_isa_num_interfaces (xtensa_isa isa) | |
481 | { | |
482 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
483 | return intisa->num_interfaces; | |
484 | } | |
485 | ||
486 | ||
487 | int | |
488 | xtensa_isa_num_funcUnits (xtensa_isa isa) | |
489 | { | |
490 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
491 | return intisa->num_funcUnits; | |
492 | } | |
493 | ||
494 | ||
495 | \f | |
496 | /* Instruction formats. */ | |
497 | ||
498 | ||
499 | #define CHECK_FORMAT(INTISA,FMT,ERRVAL) \ | |
500 | do { \ | |
501 | if ((FMT) < 0 || (FMT) >= (INTISA)->num_formats) \ | |
502 | { \ | |
503 | xtisa_errno = xtensa_isa_bad_format; \ | |
504 | strcpy (xtisa_error_msg, "invalid format specifier"); \ | |
505 | return (ERRVAL); \ | |
506 | } \ | |
507 | } while (0) | |
508 | ||
509 | ||
510 | #define CHECK_SLOT(INTISA,FMT,SLOT,ERRVAL) \ | |
511 | do { \ | |
512 | if ((SLOT) < 0 || (SLOT) >= (INTISA)->formats[FMT].num_slots) \ | |
513 | { \ | |
514 | xtisa_errno = xtensa_isa_bad_slot; \ | |
515 | strcpy (xtisa_error_msg, "invalid slot specifier"); \ | |
516 | return (ERRVAL); \ | |
517 | } \ | |
518 | } while (0) | |
519 | ||
520 | ||
521 | const char * | |
522 | xtensa_format_name (xtensa_isa isa, xtensa_format fmt) | |
523 | { | |
524 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
525 | CHECK_FORMAT (intisa, fmt, NULL); | |
526 | return intisa->formats[fmt].name; | |
527 | } | |
528 | ||
529 | ||
530 | xtensa_format | |
531 | xtensa_format_lookup (xtensa_isa isa, const char *fmtname) | |
532 | { | |
533 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
534 | int fmt; | |
535 | ||
536 | if (!fmtname || !*fmtname) | |
537 | { | |
538 | xtisa_errno = xtensa_isa_bad_format; | |
539 | strcpy (xtisa_error_msg, "invalid format name"); | |
540 | return XTENSA_UNDEFINED; | |
541 | } | |
542 | ||
543 | for (fmt = 0; fmt < intisa->num_formats; fmt++) | |
544 | { | |
545 | if (strcasecmp (fmtname, intisa->formats[fmt].name) == 0) | |
546 | return fmt; | |
547 | } | |
68ffbac6 | 548 | |
43cd72b9 BW |
549 | xtisa_errno = xtensa_isa_bad_format; |
550 | sprintf (xtisa_error_msg, "format \"%s\" not recognized", fmtname); | |
551 | return XTENSA_UNDEFINED; | |
552 | } | |
553 | ||
554 | ||
555 | xtensa_format | |
556 | xtensa_format_decode (xtensa_isa isa, const xtensa_insnbuf insn) | |
557 | { | |
558 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
559 | xtensa_format fmt; | |
560 | ||
561 | fmt = (intisa->format_decode_fn) (insn); | |
562 | if (fmt != XTENSA_UNDEFINED) | |
563 | return fmt; | |
564 | ||
565 | xtisa_errno = xtensa_isa_bad_format; | |
566 | strcpy (xtisa_error_msg, "cannot decode instruction format"); | |
567 | return XTENSA_UNDEFINED; | |
568 | } | |
569 | ||
570 | ||
571 | int | |
572 | xtensa_format_encode (xtensa_isa isa, xtensa_format fmt, xtensa_insnbuf insn) | |
573 | { | |
574 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
575 | CHECK_FORMAT (intisa, fmt, -1); | |
576 | (*intisa->formats[fmt].encode_fn) (insn); | |
577 | return 0; | |
578 | } | |
579 | ||
580 | ||
581 | int | |
582 | xtensa_format_length (xtensa_isa isa, xtensa_format fmt) | |
583 | { | |
584 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
585 | CHECK_FORMAT (intisa, fmt, XTENSA_UNDEFINED); | |
586 | return intisa->formats[fmt].length; | |
587 | } | |
588 | ||
589 | ||
590 | int | |
591 | xtensa_format_num_slots (xtensa_isa isa, xtensa_format fmt) | |
592 | { | |
593 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
594 | CHECK_FORMAT (intisa, fmt, XTENSA_UNDEFINED); | |
595 | return intisa->formats[fmt].num_slots; | |
596 | } | |
597 | ||
598 | ||
599 | xtensa_opcode | |
600 | xtensa_format_slot_nop_opcode (xtensa_isa isa, xtensa_format fmt, int slot) | |
601 | { | |
602 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
603 | int slot_id; | |
604 | ||
605 | CHECK_FORMAT (intisa, fmt, XTENSA_UNDEFINED); | |
606 | CHECK_SLOT (intisa, fmt, slot, XTENSA_UNDEFINED); | |
607 | ||
608 | slot_id = intisa->formats[fmt].slot_id[slot]; | |
609 | return xtensa_opcode_lookup (isa, intisa->slots[slot_id].nop_name); | |
610 | } | |
611 | ||
612 | ||
613 | int | |
614 | xtensa_format_get_slot (xtensa_isa isa, xtensa_format fmt, int slot, | |
615 | const xtensa_insnbuf insn, xtensa_insnbuf slotbuf) | |
616 | { | |
617 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
618 | int slot_id; | |
619 | ||
620 | CHECK_FORMAT (intisa, fmt, -1); | |
621 | CHECK_SLOT (intisa, fmt, slot, -1); | |
622 | ||
623 | slot_id = intisa->formats[fmt].slot_id[slot]; | |
624 | (*intisa->slots[slot_id].get_fn) (insn, slotbuf); | |
625 | return 0; | |
626 | } | |
627 | ||
628 | ||
629 | int | |
630 | xtensa_format_set_slot (xtensa_isa isa, xtensa_format fmt, int slot, | |
631 | xtensa_insnbuf insn, const xtensa_insnbuf slotbuf) | |
632 | { | |
633 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
634 | int slot_id; | |
635 | ||
636 | CHECK_FORMAT (intisa, fmt, -1); | |
637 | CHECK_SLOT (intisa, fmt, slot, -1); | |
638 | ||
639 | slot_id = intisa->formats[fmt].slot_id[slot]; | |
640 | (*intisa->slots[slot_id].set_fn) (insn, slotbuf); | |
641 | return 0; | |
642 | } | |
643 | ||
644 | ||
645 | \f | |
646 | /* Opcode information. */ | |
647 | ||
648 | ||
649 | #define CHECK_OPCODE(INTISA,OPC,ERRVAL) \ | |
650 | do { \ | |
651 | if ((OPC) < 0 || (OPC) >= (INTISA)->num_opcodes) \ | |
652 | { \ | |
653 | xtisa_errno = xtensa_isa_bad_opcode; \ | |
654 | strcpy (xtisa_error_msg, "invalid opcode specifier"); \ | |
655 | return (ERRVAL); \ | |
656 | } \ | |
657 | } while (0) | |
658 | ||
659 | ||
660 | xtensa_opcode | |
661 | xtensa_opcode_lookup (xtensa_isa isa, const char *opname) | |
662 | { | |
663 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
1fbc7e7a | 664 | xtensa_lookup_entry entry, *result = 0; |
43cd72b9 BW |
665 | |
666 | if (!opname || !*opname) | |
667 | { | |
668 | xtisa_errno = xtensa_isa_bad_opcode; | |
669 | strcpy (xtisa_error_msg, "invalid opcode name"); | |
670 | return XTENSA_UNDEFINED; | |
671 | } | |
672 | ||
1fbc7e7a BW |
673 | if (intisa->num_opcodes != 0) |
674 | { | |
675 | entry.key = opname; | |
676 | result = bsearch (&entry, intisa->opname_lookup_table, | |
677 | intisa->num_opcodes, sizeof (xtensa_lookup_entry), | |
678 | xtensa_isa_name_compare); | |
679 | } | |
43cd72b9 BW |
680 | |
681 | if (!result) | |
682 | { | |
683 | xtisa_errno = xtensa_isa_bad_opcode; | |
684 | sprintf (xtisa_error_msg, "opcode \"%s\" not recognized", opname); | |
685 | return XTENSA_UNDEFINED; | |
686 | } | |
687 | ||
688 | return result->u.opcode; | |
689 | } | |
690 | ||
691 | ||
692 | xtensa_opcode | |
693 | xtensa_opcode_decode (xtensa_isa isa, xtensa_format fmt, int slot, | |
694 | const xtensa_insnbuf slotbuf) | |
695 | { | |
696 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
697 | int slot_id; | |
698 | xtensa_opcode opc; | |
699 | ||
700 | CHECK_FORMAT (intisa, fmt, XTENSA_UNDEFINED); | |
701 | CHECK_SLOT (intisa, fmt, slot, XTENSA_UNDEFINED); | |
702 | ||
703 | slot_id = intisa->formats[fmt].slot_id[slot]; | |
704 | ||
705 | opc = (intisa->slots[slot_id].opcode_decode_fn) (slotbuf); | |
1fbc7e7a BW |
706 | if (opc != XTENSA_UNDEFINED) |
707 | return opc; | |
708 | ||
709 | xtisa_errno = xtensa_isa_bad_opcode; | |
710 | strcpy (xtisa_error_msg, "cannot decode opcode"); | |
711 | return XTENSA_UNDEFINED; | |
43cd72b9 BW |
712 | } |
713 | ||
714 | ||
715 | int | |
716 | xtensa_opcode_encode (xtensa_isa isa, xtensa_format fmt, int slot, | |
717 | xtensa_insnbuf slotbuf, xtensa_opcode opc) | |
718 | { | |
719 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
720 | int slot_id; | |
721 | xtensa_opcode_encode_fn encode_fn; | |
722 | ||
723 | CHECK_FORMAT (intisa, fmt, -1); | |
724 | CHECK_SLOT (intisa, fmt, slot, -1); | |
725 | CHECK_OPCODE (intisa, opc, -1); | |
726 | ||
727 | slot_id = intisa->formats[fmt].slot_id[slot]; | |
728 | encode_fn = intisa->opcodes[opc].encode_fns[slot_id]; | |
729 | if (!encode_fn) | |
730 | { | |
731 | xtisa_errno = xtensa_isa_wrong_slot; | |
732 | sprintf (xtisa_error_msg, | |
733 | "opcode \"%s\" is not allowed in slot %d of format \"%s\"", | |
734 | intisa->opcodes[opc].name, slot, intisa->formats[fmt].name); | |
735 | return -1; | |
736 | } | |
737 | (*encode_fn) (slotbuf); | |
738 | return 0; | |
739 | } | |
740 | ||
741 | ||
742 | const char * | |
743 | xtensa_opcode_name (xtensa_isa isa, xtensa_opcode opc) | |
744 | { | |
745 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
746 | CHECK_OPCODE (intisa, opc, NULL); | |
747 | return intisa->opcodes[opc].name; | |
748 | } | |
749 | ||
750 | ||
751 | int | |
752 | xtensa_opcode_is_branch (xtensa_isa isa, xtensa_opcode opc) | |
753 | { | |
754 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
755 | CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED); | |
756 | if ((intisa->opcodes[opc].flags & XTENSA_OPCODE_IS_BRANCH) != 0) | |
757 | return 1; | |
758 | return 0; | |
759 | } | |
760 | ||
761 | ||
762 | int | |
763 | xtensa_opcode_is_jump (xtensa_isa isa, xtensa_opcode opc) | |
764 | { | |
765 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
766 | CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED); | |
767 | if ((intisa->opcodes[opc].flags & XTENSA_OPCODE_IS_JUMP) != 0) | |
768 | return 1; | |
769 | return 0; | |
770 | } | |
771 | ||
772 | ||
773 | int | |
774 | xtensa_opcode_is_loop (xtensa_isa isa, xtensa_opcode opc) | |
775 | { | |
776 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
777 | CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED); | |
778 | if ((intisa->opcodes[opc].flags & XTENSA_OPCODE_IS_LOOP) != 0) | |
779 | return 1; | |
780 | return 0; | |
781 | } | |
782 | ||
783 | ||
784 | int | |
785 | xtensa_opcode_is_call (xtensa_isa isa, xtensa_opcode opc) | |
786 | { | |
787 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
788 | CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED); | |
789 | if ((intisa->opcodes[opc].flags & XTENSA_OPCODE_IS_CALL) != 0) | |
790 | return 1; | |
791 | return 0; | |
792 | } | |
793 | ||
794 | ||
795 | int | |
796 | xtensa_opcode_num_operands (xtensa_isa isa, xtensa_opcode opc) | |
797 | { | |
798 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
799 | int iclass_id; | |
800 | ||
801 | CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED); | |
802 | iclass_id = intisa->opcodes[opc].iclass_id; | |
803 | return intisa->iclasses[iclass_id].num_operands; | |
804 | } | |
805 | ||
806 | ||
807 | int | |
808 | xtensa_opcode_num_stateOperands (xtensa_isa isa, xtensa_opcode opc) | |
809 | { | |
810 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
811 | int iclass_id; | |
812 | ||
813 | CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED); | |
814 | iclass_id = intisa->opcodes[opc].iclass_id; | |
815 | return intisa->iclasses[iclass_id].num_stateOperands; | |
816 | } | |
817 | ||
818 | ||
819 | int | |
820 | xtensa_opcode_num_interfaceOperands (xtensa_isa isa, xtensa_opcode opc) | |
821 | { | |
822 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
823 | int iclass_id; | |
824 | ||
825 | CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED); | |
826 | iclass_id = intisa->opcodes[opc].iclass_id; | |
827 | return intisa->iclasses[iclass_id].num_interfaceOperands; | |
828 | } | |
829 | ||
830 | ||
831 | int | |
832 | xtensa_opcode_num_funcUnit_uses (xtensa_isa isa, xtensa_opcode opc) | |
833 | { | |
834 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
835 | CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED); | |
836 | return intisa->opcodes[opc].num_funcUnit_uses; | |
837 | } | |
838 | ||
839 | ||
840 | xtensa_funcUnit_use * | |
841 | xtensa_opcode_funcUnit_use (xtensa_isa isa, xtensa_opcode opc, int u) | |
842 | { | |
843 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
844 | CHECK_OPCODE (intisa, opc, NULL); | |
845 | if (u < 0 || u >= intisa->opcodes[opc].num_funcUnit_uses) | |
846 | { | |
847 | xtisa_errno = xtensa_isa_bad_funcUnit; | |
848 | sprintf (xtisa_error_msg, "invalid functional unit use number (%d); " | |
849 | "opcode \"%s\" has %d", u, intisa->opcodes[opc].name, | |
850 | intisa->opcodes[opc].num_funcUnit_uses); | |
851 | return NULL; | |
852 | } | |
853 | return &intisa->opcodes[opc].funcUnit_uses[u]; | |
854 | } | |
855 | ||
856 | ||
857 | \f | |
858 | /* Operand information. */ | |
859 | ||
860 | ||
861 | #define CHECK_OPERAND(INTISA,OPC,ICLASS,OPND,ERRVAL) \ | |
862 | do { \ | |
863 | if ((OPND) < 0 || (OPND) >= (ICLASS)->num_operands) \ | |
864 | { \ | |
865 | xtisa_errno = xtensa_isa_bad_operand; \ | |
866 | sprintf (xtisa_error_msg, "invalid operand number (%d); " \ | |
867 | "opcode \"%s\" has %d operands", (OPND), \ | |
868 | (INTISA)->opcodes[(OPC)].name, (ICLASS)->num_operands); \ | |
869 | return (ERRVAL); \ | |
870 | } \ | |
871 | } while (0) | |
872 | ||
873 | ||
874 | static xtensa_operand_internal * | |
875 | get_operand (xtensa_isa_internal *intisa, xtensa_opcode opc, int opnd) | |
876 | { | |
877 | xtensa_iclass_internal *iclass; | |
878 | int iclass_id, operand_id; | |
879 | ||
880 | CHECK_OPCODE (intisa, opc, NULL); | |
881 | iclass_id = intisa->opcodes[opc].iclass_id; | |
882 | iclass = &intisa->iclasses[iclass_id]; | |
883 | CHECK_OPERAND (intisa, opc, iclass, opnd, NULL); | |
884 | operand_id = iclass->operands[opnd].u.operand_id; | |
885 | return &intisa->operands[operand_id]; | |
886 | } | |
887 | ||
888 | ||
889 | const char * | |
890 | xtensa_operand_name (xtensa_isa isa, xtensa_opcode opc, int opnd) | |
891 | { | |
892 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
893 | xtensa_operand_internal *intop; | |
894 | ||
895 | intop = get_operand (intisa, opc, opnd); | |
896 | if (!intop) return NULL; | |
897 | return intop->name; | |
898 | } | |
899 | ||
900 | ||
901 | int | |
902 | xtensa_operand_is_visible (xtensa_isa isa, xtensa_opcode opc, int opnd) | |
903 | { | |
904 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
905 | xtensa_iclass_internal *iclass; | |
906 | int iclass_id, operand_id; | |
907 | xtensa_operand_internal *intop; | |
908 | ||
909 | CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED); | |
910 | iclass_id = intisa->opcodes[opc].iclass_id; | |
911 | iclass = &intisa->iclasses[iclass_id]; | |
912 | CHECK_OPERAND (intisa, opc, iclass, opnd, XTENSA_UNDEFINED); | |
913 | ||
914 | /* Special case for "sout" operands. */ | |
915 | if (iclass->operands[opnd].inout == 's') | |
916 | return 0; | |
917 | ||
918 | operand_id = iclass->operands[opnd].u.operand_id; | |
919 | intop = &intisa->operands[operand_id]; | |
920 | ||
921 | if ((intop->flags & XTENSA_OPERAND_IS_INVISIBLE) == 0) | |
922 | return 1; | |
923 | return 0; | |
924 | } | |
925 | ||
926 | ||
927 | char | |
928 | xtensa_operand_inout (xtensa_isa isa, xtensa_opcode opc, int opnd) | |
929 | { | |
930 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
931 | xtensa_iclass_internal *iclass; | |
932 | int iclass_id; | |
933 | char inout; | |
934 | ||
935 | CHECK_OPCODE (intisa, opc, 0); | |
936 | iclass_id = intisa->opcodes[opc].iclass_id; | |
937 | iclass = &intisa->iclasses[iclass_id]; | |
938 | CHECK_OPERAND (intisa, opc, iclass, opnd, 0); | |
939 | inout = iclass->operands[opnd].inout; | |
940 | ||
941 | /* Special case for "sout" operands. */ | |
942 | if (inout == 's') | |
943 | return 'o'; | |
944 | ||
945 | return inout; | |
946 | } | |
947 | ||
948 | ||
949 | int | |
950 | xtensa_operand_get_field (xtensa_isa isa, xtensa_opcode opc, int opnd, | |
951 | xtensa_format fmt, int slot, | |
952 | const xtensa_insnbuf slotbuf, uint32 *valp) | |
953 | { | |
954 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
955 | xtensa_operand_internal *intop; | |
956 | int slot_id; | |
957 | xtensa_get_field_fn get_fn; | |
958 | ||
959 | intop = get_operand (intisa, opc, opnd); | |
960 | if (!intop) return -1; | |
961 | ||
962 | CHECK_FORMAT (intisa, fmt, -1); | |
963 | CHECK_SLOT (intisa, fmt, slot, -1); | |
964 | ||
965 | slot_id = intisa->formats[fmt].slot_id[slot]; | |
966 | if (intop->field_id == XTENSA_UNDEFINED) | |
967 | { | |
968 | xtisa_errno = xtensa_isa_no_field; | |
969 | strcpy (xtisa_error_msg, "implicit operand has no field"); | |
970 | return -1; | |
971 | } | |
972 | get_fn = intisa->slots[slot_id].get_field_fns[intop->field_id]; | |
973 | if (!get_fn) | |
974 | { | |
975 | xtisa_errno = xtensa_isa_wrong_slot; | |
976 | sprintf (xtisa_error_msg, | |
977 | "operand \"%s\" does not exist in slot %d of format \"%s\"", | |
978 | intop->name, slot, intisa->formats[fmt].name); | |
979 | return -1; | |
980 | } | |
981 | *valp = (*get_fn) (slotbuf); | |
982 | return 0; | |
983 | } | |
984 | ||
985 | ||
986 | int | |
987 | xtensa_operand_set_field (xtensa_isa isa, xtensa_opcode opc, int opnd, | |
988 | xtensa_format fmt, int slot, | |
989 | xtensa_insnbuf slotbuf, uint32 val) | |
990 | { | |
991 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
992 | xtensa_operand_internal *intop; | |
993 | int slot_id; | |
994 | xtensa_set_field_fn set_fn; | |
995 | ||
996 | intop = get_operand (intisa, opc, opnd); | |
997 | if (!intop) return -1; | |
998 | ||
999 | CHECK_FORMAT (intisa, fmt, -1); | |
1000 | CHECK_SLOT (intisa, fmt, slot, -1); | |
1001 | ||
1002 | slot_id = intisa->formats[fmt].slot_id[slot]; | |
1003 | if (intop->field_id == XTENSA_UNDEFINED) | |
1004 | { | |
1005 | xtisa_errno = xtensa_isa_no_field; | |
1006 | strcpy (xtisa_error_msg, "implicit operand has no field"); | |
1007 | return -1; | |
1008 | } | |
1009 | set_fn = intisa->slots[slot_id].set_field_fns[intop->field_id]; | |
1010 | if (!set_fn) | |
1011 | { | |
1012 | xtisa_errno = xtensa_isa_wrong_slot; | |
1013 | sprintf (xtisa_error_msg, | |
1014 | "operand \"%s\" does not exist in slot %d of format \"%s\"", | |
1015 | intop->name, slot, intisa->formats[fmt].name); | |
1016 | return -1; | |
1017 | } | |
1018 | (*set_fn) (slotbuf, val); | |
1019 | return 0; | |
e0001a05 NC |
1020 | } |
1021 | ||
e0001a05 | 1022 | |
43cd72b9 BW |
1023 | int |
1024 | xtensa_operand_encode (xtensa_isa isa, xtensa_opcode opc, int opnd, | |
1025 | uint32 *valp) | |
e0001a05 | 1026 | { |
43cd72b9 BW |
1027 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
1028 | xtensa_operand_internal *intop; | |
1029 | uint32 test_val, orig_val; | |
e0001a05 | 1030 | |
43cd72b9 | 1031 | intop = get_operand (intisa, opc, opnd); |
91d6fa6a NC |
1032 | if (!intop) |
1033 | return -1; | |
e0001a05 | 1034 | |
43cd72b9 | 1035 | if (!intop->encode) |
e0001a05 | 1036 | { |
43cd72b9 BW |
1037 | /* This is a default operand for a field. How can we tell if the |
1038 | value fits in the field? Write the value into the field, | |
1039 | read it back, and then make sure we get the same value. */ | |
43cd72b9 BW |
1040 | static xtensa_insnbuf tmpbuf = 0; |
1041 | int slot_id; | |
e0001a05 | 1042 | |
43cd72b9 | 1043 | if (!tmpbuf) |
e0001a05 | 1044 | { |
43cd72b9 BW |
1045 | tmpbuf = xtensa_insnbuf_alloc (isa); |
1046 | CHECK_ALLOC (tmpbuf, -1); | |
e0001a05 | 1047 | } |
43cd72b9 BW |
1048 | |
1049 | /* A default operand is always associated with a field, | |
1050 | but check just to be sure.... */ | |
1051 | if (intop->field_id == XTENSA_UNDEFINED) | |
e0001a05 | 1052 | { |
43cd72b9 BW |
1053 | xtisa_errno = xtensa_isa_internal_error; |
1054 | strcpy (xtisa_error_msg, "operand has no field"); | |
1055 | return -1; | |
e0001a05 NC |
1056 | } |
1057 | ||
43cd72b9 BW |
1058 | /* Find some slot that includes the field. */ |
1059 | for (slot_id = 0; slot_id < intisa->num_slots; slot_id++) | |
e0001a05 | 1060 | { |
43cd72b9 BW |
1061 | xtensa_get_field_fn get_fn = |
1062 | intisa->slots[slot_id].get_field_fns[intop->field_id]; | |
1063 | xtensa_set_field_fn set_fn = | |
1064 | intisa->slots[slot_id].set_field_fns[intop->field_id]; | |
1065 | ||
1066 | if (get_fn && set_fn) | |
e0001a05 | 1067 | { |
43cd72b9 BW |
1068 | (*set_fn) (tmpbuf, *valp); |
1069 | return ((*get_fn) (tmpbuf) != *valp); | |
e0001a05 NC |
1070 | } |
1071 | } | |
43cd72b9 BW |
1072 | |
1073 | /* Couldn't find any slot containing the field.... */ | |
1074 | xtisa_errno = xtensa_isa_no_field; | |
1075 | strcpy (xtisa_error_msg, "field does not exist in any slot"); | |
1076 | return -1; | |
1077 | } | |
1078 | ||
1079 | /* Encode the value. In some cases, the encoding function may detect | |
1080 | errors, but most of the time the only way to determine if the value | |
1081 | was successfully encoded is to decode it and check if it matches | |
1082 | the original value. */ | |
1083 | orig_val = *valp; | |
91d6fa6a NC |
1084 | if ((*intop->encode) (valp) |
1085 | || (test_val = *valp, (*intop->decode) (&test_val)) | |
1086 | || test_val != orig_val) | |
43cd72b9 BW |
1087 | { |
1088 | xtisa_errno = xtensa_isa_bad_value; | |
1089 | sprintf (xtisa_error_msg, "cannot encode operand value 0x%08x", *valp); | |
1090 | return -1; | |
e0001a05 NC |
1091 | } |
1092 | ||
43cd72b9 | 1093 | return 0; |
e0001a05 NC |
1094 | } |
1095 | ||
1096 | ||
43cd72b9 BW |
1097 | int |
1098 | xtensa_operand_decode (xtensa_isa isa, xtensa_opcode opc, int opnd, | |
1099 | uint32 *valp) | |
e0001a05 | 1100 | { |
43cd72b9 BW |
1101 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
1102 | xtensa_operand_internal *intop; | |
e0001a05 | 1103 | |
43cd72b9 BW |
1104 | intop = get_operand (intisa, opc, opnd); |
1105 | if (!intop) return -1; | |
e0001a05 | 1106 | |
43cd72b9 BW |
1107 | /* Use identity function for "default" operands. */ |
1108 | if (!intop->decode) | |
e0001a05 NC |
1109 | return 0; |
1110 | ||
43cd72b9 | 1111 | if ((*intop->decode) (valp)) |
e0001a05 | 1112 | { |
43cd72b9 BW |
1113 | xtisa_errno = xtensa_isa_bad_value; |
1114 | sprintf (xtisa_error_msg, "cannot decode operand value 0x%08x", *valp); | |
1115 | return -1; | |
e0001a05 | 1116 | } |
43cd72b9 BW |
1117 | return 0; |
1118 | } | |
e0001a05 | 1119 | |
e0001a05 | 1120 | |
43cd72b9 BW |
1121 | int |
1122 | xtensa_operand_is_register (xtensa_isa isa, xtensa_opcode opc, int opnd) | |
1123 | { | |
1124 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
1125 | xtensa_operand_internal *intop; | |
e0001a05 | 1126 | |
43cd72b9 BW |
1127 | intop = get_operand (intisa, opc, opnd); |
1128 | if (!intop) return XTENSA_UNDEFINED; | |
e0001a05 | 1129 | |
43cd72b9 BW |
1130 | if ((intop->flags & XTENSA_OPERAND_IS_REGISTER) != 0) |
1131 | return 1; | |
1132 | return 0; | |
1133 | } | |
e0001a05 | 1134 | |
e0001a05 | 1135 | |
43cd72b9 BW |
1136 | xtensa_regfile |
1137 | xtensa_operand_regfile (xtensa_isa isa, xtensa_opcode opc, int opnd) | |
1138 | { | |
1139 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
1140 | xtensa_operand_internal *intop; | |
e0001a05 | 1141 | |
43cd72b9 BW |
1142 | intop = get_operand (intisa, opc, opnd); |
1143 | if (!intop) return XTENSA_UNDEFINED; | |
e0001a05 | 1144 | |
43cd72b9 | 1145 | return intop->regfile; |
e0001a05 NC |
1146 | } |
1147 | ||
1148 | ||
43cd72b9 BW |
1149 | int |
1150 | xtensa_operand_num_regs (xtensa_isa isa, xtensa_opcode opc, int opnd) | |
e0001a05 | 1151 | { |
43cd72b9 BW |
1152 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
1153 | xtensa_operand_internal *intop; | |
e0001a05 | 1154 | |
43cd72b9 BW |
1155 | intop = get_operand (intisa, opc, opnd); |
1156 | if (!intop) return XTENSA_UNDEFINED; | |
1157 | ||
1158 | return intop->num_regs; | |
e0001a05 NC |
1159 | } |
1160 | ||
1161 | ||
1162 | int | |
43cd72b9 | 1163 | xtensa_operand_is_known_reg (xtensa_isa isa, xtensa_opcode opc, int opnd) |
e0001a05 NC |
1164 | { |
1165 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
43cd72b9 BW |
1166 | xtensa_operand_internal *intop; |
1167 | ||
1168 | intop = get_operand (intisa, opc, opnd); | |
1169 | if (!intop) return XTENSA_UNDEFINED; | |
1170 | ||
1171 | if ((intop->flags & XTENSA_OPERAND_IS_UNKNOWN) == 0) | |
1172 | return 1; | |
1173 | return 0; | |
e0001a05 NC |
1174 | } |
1175 | ||
1176 | ||
43cd72b9 BW |
1177 | int |
1178 | xtensa_operand_is_PCrelative (xtensa_isa isa, xtensa_opcode opc, int opnd) | |
e0001a05 NC |
1179 | { |
1180 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
43cd72b9 BW |
1181 | xtensa_operand_internal *intop; |
1182 | ||
1183 | intop = get_operand (intisa, opc, opnd); | |
1184 | if (!intop) return XTENSA_UNDEFINED; | |
1185 | ||
1186 | if ((intop->flags & XTENSA_OPERAND_IS_PCRELATIVE) != 0) | |
1187 | return 1; | |
1188 | return 0; | |
e0001a05 NC |
1189 | } |
1190 | ||
1191 | ||
1192 | int | |
43cd72b9 BW |
1193 | xtensa_operand_do_reloc (xtensa_isa isa, xtensa_opcode opc, int opnd, |
1194 | uint32 *valp, uint32 pc) | |
e0001a05 NC |
1195 | { |
1196 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
43cd72b9 BW |
1197 | xtensa_operand_internal *intop; |
1198 | ||
1199 | intop = get_operand (intisa, opc, opnd); | |
1200 | if (!intop) return -1; | |
1201 | ||
1202 | if ((intop->flags & XTENSA_OPERAND_IS_PCRELATIVE) == 0) | |
1203 | return 0; | |
1204 | ||
1205 | if (!intop->do_reloc) | |
1206 | { | |
1207 | xtisa_errno = xtensa_isa_internal_error; | |
1208 | strcpy (xtisa_error_msg, "operand missing do_reloc function"); | |
1209 | return -1; | |
1210 | } | |
1211 | ||
1212 | if ((*intop->do_reloc) (valp, pc)) | |
1213 | { | |
1214 | xtisa_errno = xtensa_isa_bad_value; | |
1215 | sprintf (xtisa_error_msg, | |
1216 | "do_reloc failed for value 0x%08x at PC 0x%08x", *valp, pc); | |
1217 | return -1; | |
1218 | } | |
1219 | ||
1220 | return 0; | |
e0001a05 NC |
1221 | } |
1222 | ||
1223 | ||
1224 | int | |
43cd72b9 BW |
1225 | xtensa_operand_undo_reloc (xtensa_isa isa, xtensa_opcode opc, int opnd, |
1226 | uint32 *valp, uint32 pc) | |
e0001a05 | 1227 | { |
43cd72b9 BW |
1228 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
1229 | xtensa_operand_internal *intop; | |
1230 | ||
1231 | intop = get_operand (intisa, opc, opnd); | |
1232 | if (!intop) return -1; | |
1233 | ||
1234 | if ((intop->flags & XTENSA_OPERAND_IS_PCRELATIVE) == 0) | |
1235 | return 0; | |
1236 | ||
1237 | if (!intop->undo_reloc) | |
1238 | { | |
1239 | xtisa_errno = xtensa_isa_internal_error; | |
1240 | strcpy (xtisa_error_msg, "operand missing undo_reloc function"); | |
1241 | return -1; | |
1242 | } | |
1243 | ||
1244 | if ((*intop->undo_reloc) (valp, pc)) | |
1245 | { | |
1246 | xtisa_errno = xtensa_isa_bad_value; | |
1247 | sprintf (xtisa_error_msg, | |
1248 | "undo_reloc failed for value 0x%08x at PC 0x%08x", *valp, pc); | |
1249 | return -1; | |
1250 | } | |
1251 | ||
1252 | return 0; | |
e0001a05 NC |
1253 | } |
1254 | ||
1255 | ||
43cd72b9 BW |
1256 | \f |
1257 | /* State Operands. */ | |
1258 | ||
1259 | ||
1260 | #define CHECK_STATE_OPERAND(INTISA,OPC,ICLASS,STOP,ERRVAL) \ | |
1261 | do { \ | |
1262 | if ((STOP) < 0 || (STOP) >= (ICLASS)->num_stateOperands) \ | |
1263 | { \ | |
1264 | xtisa_errno = xtensa_isa_bad_operand; \ | |
1265 | sprintf (xtisa_error_msg, "invalid state operand number (%d); " \ | |
1266 | "opcode \"%s\" has %d state operands", (STOP), \ | |
1267 | (INTISA)->opcodes[(OPC)].name, (ICLASS)->num_stateOperands); \ | |
1268 | return (ERRVAL); \ | |
1269 | } \ | |
1270 | } while (0) | |
1271 | ||
1272 | ||
1273 | xtensa_state | |
1274 | xtensa_stateOperand_state (xtensa_isa isa, xtensa_opcode opc, int stOp) | |
e0001a05 NC |
1275 | { |
1276 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
43cd72b9 BW |
1277 | xtensa_iclass_internal *iclass; |
1278 | int iclass_id; | |
1279 | ||
1280 | CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED); | |
1281 | iclass_id = intisa->opcodes[opc].iclass_id; | |
1282 | iclass = &intisa->iclasses[iclass_id]; | |
1283 | CHECK_STATE_OPERAND (intisa, opc, iclass, stOp, XTENSA_UNDEFINED); | |
1284 | return iclass->stateOperands[stOp].u.state; | |
e0001a05 NC |
1285 | } |
1286 | ||
1287 | ||
43cd72b9 BW |
1288 | char |
1289 | xtensa_stateOperand_inout (xtensa_isa isa, xtensa_opcode opc, int stOp) | |
e0001a05 NC |
1290 | { |
1291 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
43cd72b9 BW |
1292 | xtensa_iclass_internal *iclass; |
1293 | int iclass_id; | |
1294 | ||
1295 | CHECK_OPCODE (intisa, opc, 0); | |
1296 | iclass_id = intisa->opcodes[opc].iclass_id; | |
1297 | iclass = &intisa->iclasses[iclass_id]; | |
1298 | CHECK_STATE_OPERAND (intisa, opc, iclass, stOp, 0); | |
1299 | return iclass->stateOperands[stOp].inout; | |
1300 | } | |
e0001a05 | 1301 | |
1fbc7e7a | 1302 | |
43cd72b9 BW |
1303 | \f |
1304 | /* Interface Operands. */ | |
1305 | ||
1306 | ||
1307 | #define CHECK_INTERFACE_OPERAND(INTISA,OPC,ICLASS,IFOP,ERRVAL) \ | |
1308 | do { \ | |
1309 | if ((IFOP) < 0 || (IFOP) >= (ICLASS)->num_interfaceOperands) \ | |
1310 | { \ | |
1311 | xtisa_errno = xtensa_isa_bad_operand; \ | |
1312 | sprintf (xtisa_error_msg, "invalid interface operand number (%d); " \ | |
1313 | "opcode \"%s\" has %d interface operands", (IFOP), \ | |
1314 | (INTISA)->opcodes[(OPC)].name, \ | |
1315 | (ICLASS)->num_interfaceOperands); \ | |
1316 | return (ERRVAL); \ | |
1317 | } \ | |
1318 | } while (0) | |
1319 | ||
1320 | ||
1321 | xtensa_interface | |
1322 | xtensa_interfaceOperand_interface (xtensa_isa isa, xtensa_opcode opc, | |
1323 | int ifOp) | |
1324 | { | |
1325 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
1326 | xtensa_iclass_internal *iclass; | |
1327 | int iclass_id; | |
1328 | ||
1329 | CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED); | |
1330 | iclass_id = intisa->opcodes[opc].iclass_id; | |
1331 | iclass = &intisa->iclasses[iclass_id]; | |
1332 | CHECK_INTERFACE_OPERAND (intisa, opc, iclass, ifOp, XTENSA_UNDEFINED); | |
1333 | return iclass->interfaceOperands[ifOp]; | |
e0001a05 NC |
1334 | } |
1335 | ||
1336 | ||
43cd72b9 BW |
1337 | \f |
1338 | /* Register Files. */ | |
1339 | ||
1340 | ||
1341 | #define CHECK_REGFILE(INTISA,RF,ERRVAL) \ | |
1342 | do { \ | |
1343 | if ((RF) < 0 || (RF) >= (INTISA)->num_regfiles) \ | |
1344 | { \ | |
1345 | xtisa_errno = xtensa_isa_bad_regfile; \ | |
1346 | strcpy (xtisa_error_msg, "invalid regfile specifier"); \ | |
1347 | return (ERRVAL); \ | |
1348 | } \ | |
1349 | } while (0) | |
1350 | ||
1351 | ||
1352 | xtensa_regfile | |
1353 | xtensa_regfile_lookup (xtensa_isa isa, const char *name) | |
e0001a05 NC |
1354 | { |
1355 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
43cd72b9 BW |
1356 | int n; |
1357 | ||
1358 | if (!name || !*name) | |
1359 | { | |
1360 | xtisa_errno = xtensa_isa_bad_regfile; | |
1361 | strcpy (xtisa_error_msg, "invalid regfile name"); | |
1362 | return XTENSA_UNDEFINED; | |
1363 | } | |
1364 | ||
1365 | /* The expected number of regfiles is small; use a linear search. */ | |
1366 | for (n = 0; n < intisa->num_regfiles; n++) | |
1367 | { | |
007d6189 | 1368 | if (!filename_cmp (intisa->regfiles[n].name, name)) |
43cd72b9 BW |
1369 | return n; |
1370 | } | |
1371 | ||
1372 | xtisa_errno = xtensa_isa_bad_regfile; | |
1373 | sprintf (xtisa_error_msg, "regfile \"%s\" not recognized", name); | |
e0001a05 NC |
1374 | return XTENSA_UNDEFINED; |
1375 | } | |
1376 | ||
1377 | ||
43cd72b9 BW |
1378 | xtensa_regfile |
1379 | xtensa_regfile_lookup_shortname (xtensa_isa isa, const char *shortname) | |
e0001a05 NC |
1380 | { |
1381 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
e0001a05 NC |
1382 | int n; |
1383 | ||
43cd72b9 BW |
1384 | if (!shortname || !*shortname) |
1385 | { | |
1386 | xtisa_errno = xtensa_isa_bad_regfile; | |
1387 | strcpy (xtisa_error_msg, "invalid regfile shortname"); | |
1388 | return XTENSA_UNDEFINED; | |
1389 | } | |
e0001a05 | 1390 | |
43cd72b9 BW |
1391 | /* The expected number of regfiles is small; use a linear search. */ |
1392 | for (n = 0; n < intisa->num_regfiles; n++) | |
1393 | { | |
1394 | /* Ignore regfile views since they always have the same shortnames | |
1395 | as their parents. */ | |
1396 | if (intisa->regfiles[n].parent != n) | |
1397 | continue; | |
007d6189 | 1398 | if (!filename_cmp (intisa->regfiles[n].shortname, shortname)) |
43cd72b9 BW |
1399 | return n; |
1400 | } | |
e0001a05 | 1401 | |
43cd72b9 BW |
1402 | xtisa_errno = xtensa_isa_bad_regfile; |
1403 | sprintf (xtisa_error_msg, "regfile shortname \"%s\" not recognized", | |
1404 | shortname); | |
1405 | return XTENSA_UNDEFINED; | |
e0001a05 NC |
1406 | } |
1407 | ||
1408 | ||
1409 | const char * | |
43cd72b9 | 1410 | xtensa_regfile_name (xtensa_isa isa, xtensa_regfile rf) |
e0001a05 NC |
1411 | { |
1412 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
43cd72b9 BW |
1413 | CHECK_REGFILE (intisa, rf, NULL); |
1414 | return intisa->regfiles[rf].name; | |
e0001a05 NC |
1415 | } |
1416 | ||
1417 | ||
43cd72b9 BW |
1418 | const char * |
1419 | xtensa_regfile_shortname (xtensa_isa isa, xtensa_regfile rf) | |
e0001a05 NC |
1420 | { |
1421 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
43cd72b9 BW |
1422 | CHECK_REGFILE (intisa, rf, NULL); |
1423 | return intisa->regfiles[rf].shortname; | |
e0001a05 NC |
1424 | } |
1425 | ||
1426 | ||
43cd72b9 BW |
1427 | xtensa_regfile |
1428 | xtensa_regfile_view_parent (xtensa_isa isa, xtensa_regfile rf) | |
e0001a05 NC |
1429 | { |
1430 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
43cd72b9 BW |
1431 | CHECK_REGFILE (intisa, rf, XTENSA_UNDEFINED); |
1432 | return intisa->regfiles[rf].parent; | |
e0001a05 NC |
1433 | } |
1434 | ||
1435 | ||
1436 | int | |
43cd72b9 | 1437 | xtensa_regfile_num_bits (xtensa_isa isa, xtensa_regfile rf) |
e0001a05 NC |
1438 | { |
1439 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
43cd72b9 BW |
1440 | CHECK_REGFILE (intisa, rf, XTENSA_UNDEFINED); |
1441 | return intisa->regfiles[rf].num_bits; | |
e0001a05 NC |
1442 | } |
1443 | ||
1444 | ||
43cd72b9 BW |
1445 | int |
1446 | xtensa_regfile_num_entries (xtensa_isa isa, xtensa_regfile rf) | |
e0001a05 NC |
1447 | { |
1448 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
43cd72b9 BW |
1449 | CHECK_REGFILE (intisa, rf, XTENSA_UNDEFINED); |
1450 | return intisa->regfiles[rf].num_entries; | |
e0001a05 NC |
1451 | } |
1452 | ||
1fbc7e7a | 1453 | |
43cd72b9 BW |
1454 | \f |
1455 | /* Processor States. */ | |
e0001a05 | 1456 | |
e0001a05 | 1457 | |
43cd72b9 BW |
1458 | #define CHECK_STATE(INTISA,ST,ERRVAL) \ |
1459 | do { \ | |
1460 | if ((ST) < 0 || (ST) >= (INTISA)->num_states) \ | |
1461 | { \ | |
1462 | xtisa_errno = xtensa_isa_bad_state; \ | |
1463 | strcpy (xtisa_error_msg, "invalid state specifier"); \ | |
1464 | return (ERRVAL); \ | |
1465 | } \ | |
1466 | } while (0) | |
e0001a05 NC |
1467 | |
1468 | ||
43cd72b9 BW |
1469 | xtensa_state |
1470 | xtensa_state_lookup (xtensa_isa isa, const char *name) | |
e0001a05 | 1471 | { |
43cd72b9 | 1472 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
1fbc7e7a | 1473 | xtensa_lookup_entry entry, *result = 0; |
e0001a05 | 1474 | |
43cd72b9 BW |
1475 | if (!name || !*name) |
1476 | { | |
1477 | xtisa_errno = xtensa_isa_bad_state; | |
1478 | strcpy (xtisa_error_msg, "invalid state name"); | |
1479 | return XTENSA_UNDEFINED; | |
1480 | } | |
e0001a05 | 1481 | |
1fbc7e7a BW |
1482 | if (intisa->num_states != 0) |
1483 | { | |
1484 | entry.key = name; | |
1485 | result = bsearch (&entry, intisa->state_lookup_table, intisa->num_states, | |
1486 | sizeof (xtensa_lookup_entry), xtensa_isa_name_compare); | |
1487 | } | |
e0001a05 | 1488 | |
43cd72b9 BW |
1489 | if (!result) |
1490 | { | |
1491 | xtisa_errno = xtensa_isa_bad_state; | |
1492 | sprintf (xtisa_error_msg, "state \"%s\" not recognized", name); | |
1493 | return XTENSA_UNDEFINED; | |
1494 | } | |
e0001a05 | 1495 | |
43cd72b9 | 1496 | return result->u.state; |
e0001a05 NC |
1497 | } |
1498 | ||
1499 | ||
43cd72b9 BW |
1500 | const char * |
1501 | xtensa_state_name (xtensa_isa isa, xtensa_state st) | |
e0001a05 | 1502 | { |
43cd72b9 BW |
1503 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
1504 | CHECK_STATE (intisa, st, NULL); | |
1505 | return intisa->states[st].name; | |
e0001a05 NC |
1506 | } |
1507 | ||
1508 | ||
43cd72b9 BW |
1509 | int |
1510 | xtensa_state_num_bits (xtensa_isa isa, xtensa_state st) | |
e0001a05 | 1511 | { |
43cd72b9 BW |
1512 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
1513 | CHECK_STATE (intisa, st, XTENSA_UNDEFINED); | |
1514 | return intisa->states[st].num_bits; | |
e0001a05 NC |
1515 | } |
1516 | ||
1517 | ||
1518 | int | |
43cd72b9 | 1519 | xtensa_state_is_exported (xtensa_isa isa, xtensa_state st) |
e0001a05 | 1520 | { |
43cd72b9 BW |
1521 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
1522 | CHECK_STATE (intisa, st, XTENSA_UNDEFINED); | |
1523 | if ((intisa->states[st].flags & XTENSA_STATE_IS_EXPORTED) != 0) | |
1524 | return 1; | |
1525 | return 0; | |
e0001a05 NC |
1526 | } |
1527 | ||
1fbc7e7a | 1528 | |
1fa3cd83 SA |
1529 | int |
1530 | xtensa_state_is_shared_or (xtensa_isa isa, xtensa_state st) | |
1531 | { | |
1532 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
1533 | CHECK_STATE (intisa, st, XTENSA_UNDEFINED); | |
1534 | if ((intisa->states[st].flags & XTENSA_STATE_IS_SHARED_OR) != 0) | |
1535 | return 1; | |
1536 | return 0; | |
1537 | } | |
1538 | ||
1539 | ||
43cd72b9 BW |
1540 | \f |
1541 | /* Sysregs. */ | |
1542 | ||
1543 | ||
1544 | #define CHECK_SYSREG(INTISA,SYSREG,ERRVAL) \ | |
1545 | do { \ | |
1546 | if ((SYSREG) < 0 || (SYSREG) >= (INTISA)->num_sysregs) \ | |
1547 | { \ | |
1548 | xtisa_errno = xtensa_isa_bad_sysreg; \ | |
1549 | strcpy (xtisa_error_msg, "invalid sysreg specifier"); \ | |
1550 | return (ERRVAL); \ | |
1551 | } \ | |
1552 | } while (0) | |
e0001a05 | 1553 | |
43cd72b9 BW |
1554 | |
1555 | xtensa_sysreg | |
1556 | xtensa_sysreg_lookup (xtensa_isa isa, int num, int is_user) | |
e0001a05 | 1557 | { |
43cd72b9 BW |
1558 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
1559 | ||
1560 | if (is_user != 0) | |
1561 | is_user = 1; | |
1562 | ||
1563 | if (num < 0 || num > intisa->max_sysreg_num[is_user] | |
1564 | || intisa->sysreg_table[is_user][num] == XTENSA_UNDEFINED) | |
1565 | { | |
1566 | xtisa_errno = xtensa_isa_bad_sysreg; | |
1567 | strcpy (xtisa_error_msg, "sysreg not recognized"); | |
1568 | return XTENSA_UNDEFINED; | |
1569 | } | |
1570 | ||
1571 | return intisa->sysreg_table[is_user][num]; | |
e0001a05 NC |
1572 | } |
1573 | ||
1574 | ||
43cd72b9 BW |
1575 | xtensa_sysreg |
1576 | xtensa_sysreg_lookup_name (xtensa_isa isa, const char *name) | |
e0001a05 | 1577 | { |
43cd72b9 | 1578 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
1fbc7e7a | 1579 | xtensa_lookup_entry entry, *result = 0; |
e0001a05 | 1580 | |
43cd72b9 BW |
1581 | if (!name || !*name) |
1582 | { | |
1583 | xtisa_errno = xtensa_isa_bad_sysreg; | |
1584 | strcpy (xtisa_error_msg, "invalid sysreg name"); | |
1585 | return XTENSA_UNDEFINED; | |
1586 | } | |
e0001a05 | 1587 | |
1fbc7e7a BW |
1588 | if (intisa->num_sysregs != 0) |
1589 | { | |
1590 | entry.key = name; | |
1591 | result = bsearch (&entry, intisa->sysreg_lookup_table, | |
1592 | intisa->num_sysregs, sizeof (xtensa_lookup_entry), | |
1593 | xtensa_isa_name_compare); | |
1594 | } | |
e0001a05 | 1595 | |
43cd72b9 BW |
1596 | if (!result) |
1597 | { | |
1598 | xtisa_errno = xtensa_isa_bad_sysreg; | |
1599 | sprintf (xtisa_error_msg, "sysreg \"%s\" not recognized", name); | |
1600 | return XTENSA_UNDEFINED; | |
1601 | } | |
1602 | ||
1603 | return result->u.sysreg; | |
e0001a05 NC |
1604 | } |
1605 | ||
1606 | ||
43cd72b9 BW |
1607 | const char * |
1608 | xtensa_sysreg_name (xtensa_isa isa, xtensa_sysreg sysreg) | |
e0001a05 | 1609 | { |
43cd72b9 BW |
1610 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
1611 | CHECK_SYSREG (intisa, sysreg, NULL); | |
1612 | return intisa->sysregs[sysreg].name; | |
e0001a05 NC |
1613 | } |
1614 | ||
1615 | ||
43cd72b9 BW |
1616 | int |
1617 | xtensa_sysreg_number (xtensa_isa isa, xtensa_sysreg sysreg) | |
e0001a05 | 1618 | { |
43cd72b9 BW |
1619 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
1620 | CHECK_SYSREG (intisa, sysreg, XTENSA_UNDEFINED); | |
1621 | return intisa->sysregs[sysreg].number; | |
e0001a05 NC |
1622 | } |
1623 | ||
1624 | ||
43cd72b9 BW |
1625 | int |
1626 | xtensa_sysreg_is_user (xtensa_isa isa, xtensa_sysreg sysreg) | |
e0001a05 | 1627 | { |
43cd72b9 BW |
1628 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
1629 | CHECK_SYSREG (intisa, sysreg, XTENSA_UNDEFINED); | |
1630 | if (intisa->sysregs[sysreg].is_user) | |
1631 | return 1; | |
1632 | return 0; | |
e0001a05 NC |
1633 | } |
1634 | ||
1fbc7e7a | 1635 | |
43cd72b9 BW |
1636 | \f |
1637 | /* Interfaces. */ | |
e0001a05 | 1638 | |
e0001a05 | 1639 | |
43cd72b9 BW |
1640 | #define CHECK_INTERFACE(INTISA,INTF,ERRVAL) \ |
1641 | do { \ | |
1642 | if ((INTF) < 0 || (INTF) >= (INTISA)->num_interfaces) \ | |
1643 | { \ | |
1644 | xtisa_errno = xtensa_isa_bad_interface; \ | |
1645 | strcpy (xtisa_error_msg, "invalid interface specifier"); \ | |
1646 | return (ERRVAL); \ | |
1647 | } \ | |
1648 | } while (0) | |
1649 | ||
1650 | ||
1651 | xtensa_interface | |
1652 | xtensa_interface_lookup (xtensa_isa isa, const char *ifname) | |
e0001a05 NC |
1653 | { |
1654 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
1fbc7e7a | 1655 | xtensa_lookup_entry entry, *result = 0; |
e0001a05 | 1656 | |
43cd72b9 | 1657 | if (!ifname || !*ifname) |
e0001a05 | 1658 | { |
43cd72b9 BW |
1659 | xtisa_errno = xtensa_isa_bad_interface; |
1660 | strcpy (xtisa_error_msg, "invalid interface name"); | |
1661 | return XTENSA_UNDEFINED; | |
e0001a05 | 1662 | } |
43cd72b9 | 1663 | |
1fbc7e7a BW |
1664 | if (intisa->num_interfaces != 0) |
1665 | { | |
1666 | entry.key = ifname; | |
1667 | result = bsearch (&entry, intisa->interface_lookup_table, | |
1668 | intisa->num_interfaces, sizeof (xtensa_lookup_entry), | |
1669 | xtensa_isa_name_compare); | |
1670 | } | |
43cd72b9 BW |
1671 | |
1672 | if (!result) | |
e0001a05 | 1673 | { |
43cd72b9 BW |
1674 | xtisa_errno = xtensa_isa_bad_interface; |
1675 | sprintf (xtisa_error_msg, "interface \"%s\" not recognized", ifname); | |
1676 | return XTENSA_UNDEFINED; | |
e0001a05 NC |
1677 | } |
1678 | ||
43cd72b9 BW |
1679 | return result->u.intf; |
1680 | } | |
e0001a05 | 1681 | |
e0001a05 | 1682 | |
43cd72b9 BW |
1683 | const char * |
1684 | xtensa_interface_name (xtensa_isa isa, xtensa_interface intf) | |
1685 | { | |
1686 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
1687 | CHECK_INTERFACE (intisa, intf, NULL); | |
1688 | return intisa->interfaces[intf].name; | |
1689 | } | |
e0001a05 | 1690 | |
43cd72b9 BW |
1691 | |
1692 | int | |
1693 | xtensa_interface_num_bits (xtensa_isa isa, xtensa_interface intf) | |
1694 | { | |
1695 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
1696 | CHECK_INTERFACE (intisa, intf, XTENSA_UNDEFINED); | |
1697 | return intisa->interfaces[intf].num_bits; | |
e0001a05 NC |
1698 | } |
1699 | ||
43cd72b9 BW |
1700 | |
1701 | char | |
1702 | xtensa_interface_inout (xtensa_isa isa, xtensa_interface intf) | |
e0001a05 NC |
1703 | { |
1704 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
43cd72b9 BW |
1705 | CHECK_INTERFACE (intisa, intf, 0); |
1706 | return intisa->interfaces[intf].inout; | |
1707 | } | |
e0001a05 | 1708 | |
43cd72b9 BW |
1709 | |
1710 | int | |
1711 | xtensa_interface_has_side_effect (xtensa_isa isa, xtensa_interface intf) | |
1712 | { | |
1713 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
1714 | CHECK_INTERFACE (intisa, intf, XTENSA_UNDEFINED); | |
1715 | if ((intisa->interfaces[intf].flags & XTENSA_INTERFACE_HAS_SIDE_EFFECT) != 0) | |
1716 | return 1; | |
1717 | return 0; | |
1718 | } | |
1719 | ||
a1ace8d8 BW |
1720 | |
1721 | int | |
1722 | xtensa_interface_class_id (xtensa_isa isa, xtensa_interface intf) | |
1723 | { | |
1724 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
1725 | CHECK_INTERFACE (intisa, intf, XTENSA_UNDEFINED); | |
1726 | return intisa->interfaces[intf].class_id; | |
1727 | } | |
1728 | ||
1fbc7e7a | 1729 | |
43cd72b9 BW |
1730 | \f |
1731 | /* Functional Units. */ | |
1732 | ||
1733 | ||
1734 | #define CHECK_FUNCUNIT(INTISA,FUN,ERRVAL) \ | |
1735 | do { \ | |
1736 | if ((FUN) < 0 || (FUN) >= (INTISA)->num_funcUnits) \ | |
1737 | { \ | |
1738 | xtisa_errno = xtensa_isa_bad_funcUnit; \ | |
1739 | strcpy (xtisa_error_msg, "invalid functional unit specifier"); \ | |
1740 | return (ERRVAL); \ | |
1741 | } \ | |
1742 | } while (0) | |
1743 | ||
1744 | ||
1745 | xtensa_funcUnit | |
1746 | xtensa_funcUnit_lookup (xtensa_isa isa, const char *fname) | |
1747 | { | |
1748 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
1fbc7e7a | 1749 | xtensa_lookup_entry entry, *result = 0; |
43cd72b9 BW |
1750 | |
1751 | if (!fname || !*fname) | |
e0001a05 | 1752 | { |
43cd72b9 BW |
1753 | xtisa_errno = xtensa_isa_bad_funcUnit; |
1754 | strcpy (xtisa_error_msg, "invalid functional unit name"); | |
1755 | return XTENSA_UNDEFINED; | |
e0001a05 | 1756 | } |
43cd72b9 | 1757 | |
1fbc7e7a BW |
1758 | if (intisa->num_funcUnits != 0) |
1759 | { | |
1760 | entry.key = fname; | |
1761 | result = bsearch (&entry, intisa->funcUnit_lookup_table, | |
1762 | intisa->num_funcUnits, sizeof (xtensa_lookup_entry), | |
1763 | xtensa_isa_name_compare); | |
1764 | } | |
43cd72b9 BW |
1765 | |
1766 | if (!result) | |
e0001a05 | 1767 | { |
43cd72b9 BW |
1768 | xtisa_errno = xtensa_isa_bad_funcUnit; |
1769 | sprintf (xtisa_error_msg, | |
1770 | "functional unit \"%s\" not recognized", fname); | |
1771 | return XTENSA_UNDEFINED; | |
e0001a05 NC |
1772 | } |
1773 | ||
43cd72b9 BW |
1774 | return result->u.fun; |
1775 | } | |
e0001a05 | 1776 | |
e0001a05 | 1777 | |
43cd72b9 BW |
1778 | const char * |
1779 | xtensa_funcUnit_name (xtensa_isa isa, xtensa_funcUnit fun) | |
1780 | { | |
1781 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
1782 | CHECK_FUNCUNIT (intisa, fun, NULL); | |
1783 | return intisa->funcUnits[fun].name; | |
1784 | } | |
1785 | ||
1786 | ||
1787 | int | |
1788 | xtensa_funcUnit_num_copies (xtensa_isa isa, xtensa_funcUnit fun) | |
1789 | { | |
1790 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; | |
1791 | CHECK_FUNCUNIT (intisa, fun, XTENSA_UNDEFINED); | |
1792 | return intisa->funcUnits[fun].num_copies; | |
e0001a05 NC |
1793 | } |
1794 |