Commit | Line | Data |
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a40cbfa3 NC |
1 | /* Instruction building/extraction support for ip2k. -*- C -*- |
2 | ||
3 | THIS FILE IS MACHINE GENERATED WITH CGEN: Cpu tools GENerator. | |
4 | - the resultant file is machine generated, cgen-ibld.in isn't | |
5 | ||
6 | Copyright 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. | |
7 | ||
8 | This file is part of the GNU Binutils and GDB, the GNU debugger. | |
9 | ||
10 | This program is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2, or (at your option) | |
13 | any later version. | |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with this program; if not, write to the Free Software Foundation, Inc., | |
22 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
23 | ||
24 | /* ??? Eventually more and more of this stuff can go to cpu-independent files. | |
25 | Keep that in mind. */ | |
26 | ||
27 | #include "sysdep.h" | |
28 | #include <stdio.h> | |
29 | #include "ansidecl.h" | |
30 | #include "dis-asm.h" | |
31 | #include "bfd.h" | |
32 | #include "symcat.h" | |
33 | #include "ip2k-desc.h" | |
34 | #include "ip2k-opc.h" | |
35 | #include "opintl.h" | |
36 | #include "safe-ctype.h" | |
37 | ||
38 | #undef min | |
39 | #define min(a,b) ((a) < (b) ? (a) : (b)) | |
40 | #undef max | |
41 | #define max(a,b) ((a) > (b) ? (a) : (b)) | |
42 | ||
43 | /* Used by the ifield rtx function. */ | |
44 | #define FLD(f) (fields->f) | |
45 | ||
46 | static const char * insert_normal | |
ffead7ae MM |
47 | (CGEN_CPU_DESC, long, unsigned int, unsigned int, unsigned int, |
48 | unsigned int, unsigned int, unsigned int, CGEN_INSN_BYTES_PTR); | |
a40cbfa3 | 49 | static const char * insert_insn_normal |
ffead7ae MM |
50 | (CGEN_CPU_DESC, const CGEN_INSN *, |
51 | CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma); | |
a40cbfa3 | 52 | static int extract_normal |
ffead7ae MM |
53 | (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, |
54 | unsigned int, unsigned int, unsigned int, unsigned int, | |
55 | unsigned int, unsigned int, bfd_vma, long *); | |
a40cbfa3 | 56 | static int extract_insn_normal |
ffead7ae MM |
57 | (CGEN_CPU_DESC, const CGEN_INSN *, CGEN_EXTRACT_INFO *, |
58 | CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma); | |
a40cbfa3 NC |
59 | #if CGEN_INT_INSN_P |
60 | static void put_insn_int_value | |
ffead7ae | 61 | (CGEN_CPU_DESC, CGEN_INSN_BYTES_PTR, int, int, CGEN_INSN_INT); |
a40cbfa3 NC |
62 | #endif |
63 | #if ! CGEN_INT_INSN_P | |
64 | static CGEN_INLINE void insert_1 | |
ffead7ae | 65 | (CGEN_CPU_DESC, unsigned long, int, int, int, unsigned char *); |
a40cbfa3 | 66 | static CGEN_INLINE int fill_cache |
ffead7ae | 67 | (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, int, int, bfd_vma); |
a40cbfa3 | 68 | static CGEN_INLINE long extract_1 |
ffead7ae | 69 | (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, int, int, int, unsigned char *, bfd_vma); |
a40cbfa3 NC |
70 | #endif |
71 | \f | |
72 | /* Operand insertion. */ | |
73 | ||
74 | #if ! CGEN_INT_INSN_P | |
75 | ||
76 | /* Subroutine of insert_normal. */ | |
77 | ||
78 | static CGEN_INLINE void | |
ffead7ae MM |
79 | insert_1 (CGEN_CPU_DESC cd, |
80 | unsigned long value, | |
81 | int start, | |
82 | int length, | |
83 | int word_length, | |
84 | unsigned char *bufp) | |
a40cbfa3 NC |
85 | { |
86 | unsigned long x,mask; | |
87 | int shift; | |
88 | ||
89 | x = cgen_get_insn_value (cd, bufp, word_length); | |
90 | ||
91 | /* Written this way to avoid undefined behaviour. */ | |
92 | mask = (((1L << (length - 1)) - 1) << 1) | 1; | |
93 | if (CGEN_INSN_LSB0_P) | |
94 | shift = (start + 1) - length; | |
95 | else | |
96 | shift = (word_length - (start + length)); | |
97 | x = (x & ~(mask << shift)) | ((value & mask) << shift); | |
98 | ||
99 | cgen_put_insn_value (cd, bufp, word_length, (bfd_vma) x); | |
100 | } | |
101 | ||
102 | #endif /* ! CGEN_INT_INSN_P */ | |
103 | ||
104 | /* Default insertion routine. | |
105 | ||
106 | ATTRS is a mask of the boolean attributes. | |
107 | WORD_OFFSET is the offset in bits from the start of the insn of the value. | |
108 | WORD_LENGTH is the length of the word in bits in which the value resides. | |
109 | START is the starting bit number in the word, architecture origin. | |
110 | LENGTH is the length of VALUE in bits. | |
111 | TOTAL_LENGTH is the total length of the insn in bits. | |
112 | ||
113 | The result is an error message or NULL if success. */ | |
114 | ||
115 | /* ??? This duplicates functionality with bfd's howto table and | |
116 | bfd_install_relocation. */ | |
117 | /* ??? This doesn't handle bfd_vma's. Create another function when | |
118 | necessary. */ | |
119 | ||
120 | static const char * | |
ffead7ae MM |
121 | insert_normal (CGEN_CPU_DESC cd, |
122 | long value, | |
123 | unsigned int attrs, | |
124 | unsigned int word_offset, | |
125 | unsigned int start, | |
126 | unsigned int length, | |
127 | unsigned int word_length, | |
128 | unsigned int total_length, | |
129 | CGEN_INSN_BYTES_PTR buffer) | |
a40cbfa3 NC |
130 | { |
131 | static char errbuf[100]; | |
132 | /* Written this way to avoid undefined behaviour. */ | |
133 | unsigned long mask = (((1L << (length - 1)) - 1) << 1) | 1; | |
134 | ||
135 | /* If LENGTH is zero, this operand doesn't contribute to the value. */ | |
136 | if (length == 0) | |
137 | return NULL; | |
138 | ||
139 | #if 0 | |
140 | if (CGEN_INT_INSN_P | |
141 | && word_offset != 0) | |
142 | abort (); | |
143 | #endif | |
144 | ||
145 | if (word_length > 32) | |
146 | abort (); | |
147 | ||
148 | /* For architectures with insns smaller than the base-insn-bitsize, | |
149 | word_length may be too big. */ | |
150 | if (cd->min_insn_bitsize < cd->base_insn_bitsize) | |
151 | { | |
152 | if (word_offset == 0 | |
153 | && word_length > total_length) | |
154 | word_length = total_length; | |
155 | } | |
156 | ||
157 | /* Ensure VALUE will fit. */ | |
158 | if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGN_OPT)) | |
159 | { | |
160 | long minval = - (1L << (length - 1)); | |
161 | unsigned long maxval = mask; | |
162 | ||
163 | if ((value > 0 && (unsigned long) value > maxval) | |
164 | || value < minval) | |
165 | { | |
166 | /* xgettext:c-format */ | |
167 | sprintf (errbuf, | |
168 | _("operand out of range (%ld not between %ld and %lu)"), | |
169 | value, minval, maxval); | |
170 | return errbuf; | |
171 | } | |
172 | } | |
173 | else if (! CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED)) | |
174 | { | |
175 | unsigned long maxval = mask; | |
176 | ||
177 | if ((unsigned long) value > maxval) | |
178 | { | |
179 | /* xgettext:c-format */ | |
180 | sprintf (errbuf, | |
181 | _("operand out of range (%lu not between 0 and %lu)"), | |
182 | value, maxval); | |
183 | return errbuf; | |
184 | } | |
185 | } | |
186 | else | |
187 | { | |
188 | if (! cgen_signed_overflow_ok_p (cd)) | |
189 | { | |
190 | long minval = - (1L << (length - 1)); | |
191 | long maxval = (1L << (length - 1)) - 1; | |
192 | ||
193 | if (value < minval || value > maxval) | |
194 | { | |
195 | sprintf | |
196 | /* xgettext:c-format */ | |
197 | (errbuf, _("operand out of range (%ld not between %ld and %ld)"), | |
198 | value, minval, maxval); | |
199 | return errbuf; | |
200 | } | |
201 | } | |
202 | } | |
203 | ||
204 | #if CGEN_INT_INSN_P | |
205 | ||
206 | { | |
207 | int shift; | |
208 | ||
209 | if (CGEN_INSN_LSB0_P) | |
210 | shift = (word_offset + start + 1) - length; | |
211 | else | |
212 | shift = total_length - (word_offset + start + length); | |
213 | *buffer = (*buffer & ~(mask << shift)) | ((value & mask) << shift); | |
214 | } | |
215 | ||
216 | #else /* ! CGEN_INT_INSN_P */ | |
217 | ||
218 | { | |
219 | unsigned char *bufp = (unsigned char *) buffer + word_offset / 8; | |
220 | ||
221 | insert_1 (cd, value, start, length, word_length, bufp); | |
222 | } | |
223 | ||
224 | #endif /* ! CGEN_INT_INSN_P */ | |
225 | ||
226 | return NULL; | |
227 | } | |
228 | ||
229 | /* Default insn builder (insert handler). | |
230 | The instruction is recorded in CGEN_INT_INSN_P byte order (meaning | |
231 | that if CGEN_INSN_BYTES_PTR is an int * and thus, the value is | |
232 | recorded in host byte order, otherwise BUFFER is an array of bytes | |
233 | and the value is recorded in target byte order). | |
234 | The result is an error message or NULL if success. */ | |
235 | ||
236 | static const char * | |
ffead7ae MM |
237 | insert_insn_normal (CGEN_CPU_DESC cd, |
238 | const CGEN_INSN * insn, | |
239 | CGEN_FIELDS * fields, | |
240 | CGEN_INSN_BYTES_PTR buffer, | |
241 | bfd_vma pc) | |
a40cbfa3 NC |
242 | { |
243 | const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); | |
244 | unsigned long value; | |
245 | const CGEN_SYNTAX_CHAR_TYPE * syn; | |
246 | ||
247 | CGEN_INIT_INSERT (cd); | |
248 | value = CGEN_INSN_BASE_VALUE (insn); | |
249 | ||
250 | /* If we're recording insns as numbers (rather than a string of bytes), | |
251 | target byte order handling is deferred until later. */ | |
252 | ||
253 | #if CGEN_INT_INSN_P | |
254 | ||
255 | put_insn_int_value (cd, buffer, cd->base_insn_bitsize, | |
256 | CGEN_FIELDS_BITSIZE (fields), value); | |
257 | ||
258 | #else | |
259 | ||
260 | cgen_put_insn_value (cd, buffer, min ((unsigned) cd->base_insn_bitsize, | |
261 | (unsigned) CGEN_FIELDS_BITSIZE (fields)), | |
262 | value); | |
263 | ||
264 | #endif /* ! CGEN_INT_INSN_P */ | |
265 | ||
266 | /* ??? It would be better to scan the format's fields. | |
267 | Still need to be able to insert a value based on the operand though; | |
268 | e.g. storing a branch displacement that got resolved later. | |
269 | Needs more thought first. */ | |
270 | ||
271 | for (syn = CGEN_SYNTAX_STRING (syntax); * syn; ++ syn) | |
272 | { | |
273 | const char *errmsg; | |
274 | ||
275 | if (CGEN_SYNTAX_CHAR_P (* syn)) | |
276 | continue; | |
277 | ||
278 | errmsg = (* cd->insert_operand) (cd, CGEN_SYNTAX_FIELD (*syn), | |
279 | fields, buffer, pc); | |
280 | if (errmsg) | |
281 | return errmsg; | |
282 | } | |
283 | ||
284 | return NULL; | |
285 | } | |
286 | ||
287 | #if CGEN_INT_INSN_P | |
288 | /* Cover function to store an insn value into an integral insn. Must go here | |
289 | because it needs <prefix>-desc.h for CGEN_INT_INSN_P. */ | |
290 | ||
291 | static void | |
ffead7ae MM |
292 | put_insn_int_value (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
293 | CGEN_INSN_BYTES_PTR buf, | |
294 | int length, | |
295 | int insn_length, | |
296 | CGEN_INSN_INT value) | |
a40cbfa3 NC |
297 | { |
298 | /* For architectures with insns smaller than the base-insn-bitsize, | |
299 | length may be too big. */ | |
300 | if (length > insn_length) | |
301 | *buf = value; | |
302 | else | |
303 | { | |
304 | int shift = insn_length - length; | |
305 | /* Written this way to avoid undefined behaviour. */ | |
306 | CGEN_INSN_INT mask = (((1L << (length - 1)) - 1) << 1) | 1; | |
307 | *buf = (*buf & ~(mask << shift)) | ((value & mask) << shift); | |
308 | } | |
309 | } | |
310 | #endif | |
311 | \f | |
312 | /* Operand extraction. */ | |
313 | ||
314 | #if ! CGEN_INT_INSN_P | |
315 | ||
316 | /* Subroutine of extract_normal. | |
317 | Ensure sufficient bytes are cached in EX_INFO. | |
318 | OFFSET is the offset in bytes from the start of the insn of the value. | |
319 | BYTES is the length of the needed value. | |
320 | Returns 1 for success, 0 for failure. */ | |
321 | ||
322 | static CGEN_INLINE int | |
ffead7ae MM |
323 | fill_cache (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
324 | CGEN_EXTRACT_INFO *ex_info, | |
325 | int offset, | |
326 | int bytes, | |
327 | bfd_vma pc) | |
a40cbfa3 NC |
328 | { |
329 | /* It's doubtful that the middle part has already been fetched so | |
330 | we don't optimize that case. kiss. */ | |
331 | unsigned int mask; | |
332 | disassemble_info *info = (disassemble_info *) ex_info->dis_info; | |
333 | ||
334 | /* First do a quick check. */ | |
335 | mask = (1 << bytes) - 1; | |
336 | if (((ex_info->valid >> offset) & mask) == mask) | |
337 | return 1; | |
338 | ||
339 | /* Search for the first byte we need to read. */ | |
340 | for (mask = 1 << offset; bytes > 0; --bytes, ++offset, mask <<= 1) | |
341 | if (! (mask & ex_info->valid)) | |
342 | break; | |
343 | ||
344 | if (bytes) | |
345 | { | |
346 | int status; | |
347 | ||
348 | pc += offset; | |
349 | status = (*info->read_memory_func) | |
350 | (pc, ex_info->insn_bytes + offset, bytes, info); | |
351 | ||
352 | if (status != 0) | |
353 | { | |
354 | (*info->memory_error_func) (status, pc, info); | |
355 | return 0; | |
356 | } | |
357 | ||
358 | ex_info->valid |= ((1 << bytes) - 1) << offset; | |
359 | } | |
360 | ||
361 | return 1; | |
362 | } | |
363 | ||
364 | /* Subroutine of extract_normal. */ | |
365 | ||
366 | static CGEN_INLINE long | |
ffead7ae MM |
367 | extract_1 (CGEN_CPU_DESC cd, |
368 | CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED, | |
369 | int start, | |
370 | int length, | |
371 | int word_length, | |
372 | unsigned char *bufp, | |
373 | bfd_vma pc ATTRIBUTE_UNUSED) | |
a40cbfa3 NC |
374 | { |
375 | unsigned long x; | |
376 | int shift; | |
377 | #if 0 | |
378 | int big_p = CGEN_CPU_INSN_ENDIAN (cd) == CGEN_ENDIAN_BIG; | |
379 | #endif | |
380 | x = cgen_get_insn_value (cd, bufp, word_length); | |
381 | ||
382 | if (CGEN_INSN_LSB0_P) | |
383 | shift = (start + 1) - length; | |
384 | else | |
385 | shift = (word_length - (start + length)); | |
386 | return x >> shift; | |
387 | } | |
388 | ||
389 | #endif /* ! CGEN_INT_INSN_P */ | |
390 | ||
391 | /* Default extraction routine. | |
392 | ||
393 | INSN_VALUE is the first base_insn_bitsize bits of the insn in host order, | |
394 | or sometimes less for cases like the m32r where the base insn size is 32 | |
395 | but some insns are 16 bits. | |
396 | ATTRS is a mask of the boolean attributes. We only need `SIGNED', | |
397 | but for generality we take a bitmask of all of them. | |
398 | WORD_OFFSET is the offset in bits from the start of the insn of the value. | |
399 | WORD_LENGTH is the length of the word in bits in which the value resides. | |
400 | START is the starting bit number in the word, architecture origin. | |
401 | LENGTH is the length of VALUE in bits. | |
402 | TOTAL_LENGTH is the total length of the insn in bits. | |
403 | ||
404 | Returns 1 for success, 0 for failure. */ | |
405 | ||
406 | /* ??? The return code isn't properly used. wip. */ | |
407 | ||
408 | /* ??? This doesn't handle bfd_vma's. Create another function when | |
409 | necessary. */ | |
410 | ||
411 | static int | |
ffead7ae | 412 | extract_normal (CGEN_CPU_DESC cd, |
a40cbfa3 | 413 | #if ! CGEN_INT_INSN_P |
ffead7ae | 414 | CGEN_EXTRACT_INFO *ex_info, |
a40cbfa3 | 415 | #else |
ffead7ae | 416 | CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED, |
a40cbfa3 | 417 | #endif |
ffead7ae MM |
418 | CGEN_INSN_INT insn_value, |
419 | unsigned int attrs, | |
420 | unsigned int word_offset, | |
421 | unsigned int start, | |
422 | unsigned int length, | |
423 | unsigned int word_length, | |
424 | unsigned int total_length, | |
a40cbfa3 | 425 | #if ! CGEN_INT_INSN_P |
ffead7ae | 426 | bfd_vma pc, |
a40cbfa3 | 427 | #else |
ffead7ae | 428 | bfd_vma pc ATTRIBUTE_UNUSED, |
a40cbfa3 | 429 | #endif |
ffead7ae | 430 | long *valuep) |
a40cbfa3 NC |
431 | { |
432 | long value, mask; | |
433 | ||
434 | /* If LENGTH is zero, this operand doesn't contribute to the value | |
435 | so give it a standard value of zero. */ | |
436 | if (length == 0) | |
437 | { | |
438 | *valuep = 0; | |
439 | return 1; | |
440 | } | |
441 | ||
442 | #if 0 | |
443 | if (CGEN_INT_INSN_P | |
444 | && word_offset != 0) | |
445 | abort (); | |
446 | #endif | |
447 | ||
448 | if (word_length > 32) | |
449 | abort (); | |
450 | ||
451 | /* For architectures with insns smaller than the insn-base-bitsize, | |
452 | word_length may be too big. */ | |
453 | if (cd->min_insn_bitsize < cd->base_insn_bitsize) | |
454 | { | |
455 | if (word_offset == 0 | |
456 | && word_length > total_length) | |
457 | word_length = total_length; | |
458 | } | |
459 | ||
460 | /* Does the value reside in INSN_VALUE, and at the right alignment? */ | |
461 | ||
462 | if (CGEN_INT_INSN_P || (word_offset == 0 && word_length == total_length)) | |
463 | { | |
464 | if (CGEN_INSN_LSB0_P) | |
465 | value = insn_value >> ((word_offset + start + 1) - length); | |
466 | else | |
467 | value = insn_value >> (total_length - ( word_offset + start + length)); | |
468 | } | |
469 | ||
470 | #if ! CGEN_INT_INSN_P | |
471 | ||
472 | else | |
473 | { | |
474 | unsigned char *bufp = ex_info->insn_bytes + word_offset / 8; | |
475 | ||
476 | if (word_length > 32) | |
477 | abort (); | |
478 | ||
479 | if (fill_cache (cd, ex_info, word_offset / 8, word_length / 8, pc) == 0) | |
480 | return 0; | |
481 | ||
482 | value = extract_1 (cd, ex_info, start, length, word_length, bufp, pc); | |
483 | } | |
484 | ||
485 | #endif /* ! CGEN_INT_INSN_P */ | |
486 | ||
487 | /* Written this way to avoid undefined behaviour. */ | |
488 | mask = (((1L << (length - 1)) - 1) << 1) | 1; | |
489 | ||
490 | value &= mask; | |
491 | /* sign extend? */ | |
492 | if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED) | |
493 | && (value & (1L << (length - 1)))) | |
494 | value |= ~mask; | |
495 | ||
496 | *valuep = value; | |
497 | ||
498 | return 1; | |
499 | } | |
500 | ||
501 | /* Default insn extractor. | |
502 | ||
503 | INSN_VALUE is the first base_insn_bitsize bits, translated to host order. | |
504 | The extracted fields are stored in FIELDS. | |
505 | EX_INFO is used to handle reading variable length insns. | |
506 | Return the length of the insn in bits, or 0 if no match, | |
507 | or -1 if an error occurs fetching data (memory_error_func will have | |
508 | been called). */ | |
509 | ||
510 | static int | |
ffead7ae MM |
511 | extract_insn_normal (CGEN_CPU_DESC cd, |
512 | const CGEN_INSN *insn, | |
513 | CGEN_EXTRACT_INFO *ex_info, | |
514 | CGEN_INSN_INT insn_value, | |
515 | CGEN_FIELDS *fields, | |
516 | bfd_vma pc) | |
a40cbfa3 NC |
517 | { |
518 | const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); | |
519 | const CGEN_SYNTAX_CHAR_TYPE *syn; | |
520 | ||
521 | CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); | |
522 | ||
523 | CGEN_INIT_EXTRACT (cd); | |
524 | ||
525 | for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn) | |
526 | { | |
527 | int length; | |
528 | ||
529 | if (CGEN_SYNTAX_CHAR_P (*syn)) | |
530 | continue; | |
531 | ||
532 | length = (* cd->extract_operand) (cd, CGEN_SYNTAX_FIELD (*syn), | |
533 | ex_info, insn_value, fields, pc); | |
534 | if (length <= 0) | |
535 | return length; | |
536 | } | |
537 | ||
538 | /* We recognized and successfully extracted this insn. */ | |
539 | return CGEN_INSN_BITSIZE (insn); | |
540 | } | |
541 | \f | |
542 | /* machine generated code added here */ | |
543 | ||
544 | const char * ip2k_cgen_insert_operand | |
545 | PARAMS ((CGEN_CPU_DESC, int, CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma)); | |
546 | ||
547 | /* Main entry point for operand insertion. | |
548 | ||
549 | This function is basically just a big switch statement. Earlier versions | |
550 | used tables to look up the function to use, but | |
551 | - if the table contains both assembler and disassembler functions then | |
552 | the disassembler contains much of the assembler and vice-versa, | |
553 | - there's a lot of inlining possibilities as things grow, | |
554 | - using a switch statement avoids the function call overhead. | |
555 | ||
556 | This function could be moved into `parse_insn_normal', but keeping it | |
557 | separate makes clear the interface between `parse_insn_normal' and each of | |
558 | the handlers. It's also needed by GAS to insert operands that couldn't be | |
559 | resolved during parsing. */ | |
560 | ||
561 | const char * | |
562 | ip2k_cgen_insert_operand (cd, opindex, fields, buffer, pc) | |
563 | CGEN_CPU_DESC cd; | |
564 | int opindex; | |
565 | CGEN_FIELDS * fields; | |
566 | CGEN_INSN_BYTES_PTR buffer; | |
567 | bfd_vma pc ATTRIBUTE_UNUSED; | |
568 | { | |
569 | const char * errmsg = NULL; | |
570 | unsigned int total_length = CGEN_FIELDS_BITSIZE (fields); | |
571 | ||
572 | switch (opindex) | |
573 | { | |
574 | case IP2K_OPERAND_ADDR16CJP : | |
575 | errmsg = insert_normal (cd, fields->f_addr16cjp, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 12, 13, 16, total_length, buffer); | |
576 | break; | |
577 | case IP2K_OPERAND_ADDR16H : | |
578 | errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer); | |
579 | break; | |
580 | case IP2K_OPERAND_ADDR16L : | |
581 | errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer); | |
582 | break; | |
583 | case IP2K_OPERAND_ADDR16P : | |
584 | errmsg = insert_normal (cd, fields->f_page3, 0, 0, 2, 3, 16, total_length, buffer); | |
585 | break; | |
586 | case IP2K_OPERAND_BITNO : | |
587 | errmsg = insert_normal (cd, fields->f_bitno, 0, 0, 11, 3, 16, total_length, buffer); | |
588 | break; | |
589 | case IP2K_OPERAND_CBIT : | |
590 | break; | |
591 | case IP2K_OPERAND_DCBIT : | |
592 | break; | |
593 | case IP2K_OPERAND_FR : | |
594 | errmsg = insert_normal (cd, fields->f_reg, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 9, 16, total_length, buffer); | |
595 | break; | |
596 | case IP2K_OPERAND_LIT8 : | |
597 | errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer); | |
598 | break; | |
599 | case IP2K_OPERAND_PABITS : | |
600 | break; | |
601 | case IP2K_OPERAND_RETI3 : | |
602 | errmsg = insert_normal (cd, fields->f_reti3, 0, 0, 2, 3, 16, total_length, buffer); | |
603 | break; | |
604 | case IP2K_OPERAND_ZBIT : | |
605 | break; | |
606 | ||
607 | default : | |
608 | /* xgettext:c-format */ | |
609 | fprintf (stderr, _("Unrecognized field %d while building insn.\n"), | |
610 | opindex); | |
611 | abort (); | |
612 | } | |
613 | ||
614 | return errmsg; | |
615 | } | |
616 | ||
617 | int ip2k_cgen_extract_operand | |
618 | PARAMS ((CGEN_CPU_DESC, int, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, | |
619 | CGEN_FIELDS *, bfd_vma)); | |
620 | ||
621 | /* Main entry point for operand extraction. | |
622 | The result is <= 0 for error, >0 for success. | |
623 | ??? Actual values aren't well defined right now. | |
624 | ||
625 | This function is basically just a big switch statement. Earlier versions | |
626 | used tables to look up the function to use, but | |
627 | - if the table contains both assembler and disassembler functions then | |
628 | the disassembler contains much of the assembler and vice-versa, | |
629 | - there's a lot of inlining possibilities as things grow, | |
630 | - using a switch statement avoids the function call overhead. | |
631 | ||
632 | This function could be moved into `print_insn_normal', but keeping it | |
633 | separate makes clear the interface between `print_insn_normal' and each of | |
634 | the handlers. */ | |
635 | ||
636 | int | |
637 | ip2k_cgen_extract_operand (cd, opindex, ex_info, insn_value, fields, pc) | |
638 | CGEN_CPU_DESC cd; | |
639 | int opindex; | |
640 | CGEN_EXTRACT_INFO *ex_info; | |
641 | CGEN_INSN_INT insn_value; | |
642 | CGEN_FIELDS * fields; | |
643 | bfd_vma pc; | |
644 | { | |
645 | /* Assume success (for those operands that are nops). */ | |
646 | int length = 1; | |
647 | unsigned int total_length = CGEN_FIELDS_BITSIZE (fields); | |
648 | ||
649 | switch (opindex) | |
650 | { | |
651 | case IP2K_OPERAND_ADDR16CJP : | |
652 | length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 12, 13, 16, total_length, pc, & fields->f_addr16cjp); | |
653 | break; | |
654 | case IP2K_OPERAND_ADDR16H : | |
655 | length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8); | |
656 | break; | |
657 | case IP2K_OPERAND_ADDR16L : | |
658 | length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8); | |
659 | break; | |
660 | case IP2K_OPERAND_ADDR16P : | |
661 | length = extract_normal (cd, ex_info, insn_value, 0, 0, 2, 3, 16, total_length, pc, & fields->f_page3); | |
662 | break; | |
663 | case IP2K_OPERAND_BITNO : | |
664 | length = extract_normal (cd, ex_info, insn_value, 0, 0, 11, 3, 16, total_length, pc, & fields->f_bitno); | |
665 | break; | |
666 | case IP2K_OPERAND_CBIT : | |
667 | break; | |
668 | case IP2K_OPERAND_DCBIT : | |
669 | break; | |
670 | case IP2K_OPERAND_FR : | |
671 | length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 9, 16, total_length, pc, & fields->f_reg); | |
672 | break; | |
673 | case IP2K_OPERAND_LIT8 : | |
674 | length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8); | |
675 | break; | |
676 | case IP2K_OPERAND_PABITS : | |
677 | break; | |
678 | case IP2K_OPERAND_RETI3 : | |
679 | length = extract_normal (cd, ex_info, insn_value, 0, 0, 2, 3, 16, total_length, pc, & fields->f_reti3); | |
680 | break; | |
681 | case IP2K_OPERAND_ZBIT : | |
682 | break; | |
683 | ||
684 | default : | |
685 | /* xgettext:c-format */ | |
686 | fprintf (stderr, _("Unrecognized field %d while decoding insn.\n"), | |
687 | opindex); | |
688 | abort (); | |
689 | } | |
690 | ||
691 | return length; | |
692 | } | |
693 | ||
694 | cgen_insert_fn * const ip2k_cgen_insert_handlers[] = | |
695 | { | |
696 | insert_insn_normal, | |
697 | }; | |
698 | ||
699 | cgen_extract_fn * const ip2k_cgen_extract_handlers[] = | |
700 | { | |
701 | extract_insn_normal, | |
702 | }; | |
703 | ||
704 | int ip2k_cgen_get_int_operand | |
705 | PARAMS ((CGEN_CPU_DESC, int, const CGEN_FIELDS *)); | |
706 | bfd_vma ip2k_cgen_get_vma_operand | |
707 | PARAMS ((CGEN_CPU_DESC, int, const CGEN_FIELDS *)); | |
708 | ||
709 | /* Getting values from cgen_fields is handled by a collection of functions. | |
710 | They are distinguished by the type of the VALUE argument they return. | |
711 | TODO: floating point, inlining support, remove cases where result type | |
712 | not appropriate. */ | |
713 | ||
714 | int | |
715 | ip2k_cgen_get_int_operand (cd, opindex, fields) | |
716 | CGEN_CPU_DESC cd ATTRIBUTE_UNUSED; | |
717 | int opindex; | |
718 | const CGEN_FIELDS * fields; | |
719 | { | |
720 | int value; | |
721 | ||
722 | switch (opindex) | |
723 | { | |
724 | case IP2K_OPERAND_ADDR16CJP : | |
725 | value = fields->f_addr16cjp; | |
726 | break; | |
727 | case IP2K_OPERAND_ADDR16H : | |
728 | value = fields->f_imm8; | |
729 | break; | |
730 | case IP2K_OPERAND_ADDR16L : | |
731 | value = fields->f_imm8; | |
732 | break; | |
733 | case IP2K_OPERAND_ADDR16P : | |
734 | value = fields->f_page3; | |
735 | break; | |
736 | case IP2K_OPERAND_BITNO : | |
737 | value = fields->f_bitno; | |
738 | break; | |
739 | case IP2K_OPERAND_CBIT : | |
740 | value = 0; | |
741 | break; | |
742 | case IP2K_OPERAND_DCBIT : | |
743 | value = 0; | |
744 | break; | |
745 | case IP2K_OPERAND_FR : | |
746 | value = fields->f_reg; | |
747 | break; | |
748 | case IP2K_OPERAND_LIT8 : | |
749 | value = fields->f_imm8; | |
750 | break; | |
751 | case IP2K_OPERAND_PABITS : | |
752 | value = 0; | |
753 | break; | |
754 | case IP2K_OPERAND_RETI3 : | |
755 | value = fields->f_reti3; | |
756 | break; | |
757 | case IP2K_OPERAND_ZBIT : | |
758 | value = 0; | |
759 | break; | |
760 | ||
761 | default : | |
762 | /* xgettext:c-format */ | |
763 | fprintf (stderr, _("Unrecognized field %d while getting int operand.\n"), | |
764 | opindex); | |
765 | abort (); | |
766 | } | |
767 | ||
768 | return value; | |
769 | } | |
770 | ||
771 | bfd_vma | |
772 | ip2k_cgen_get_vma_operand (cd, opindex, fields) | |
773 | CGEN_CPU_DESC cd ATTRIBUTE_UNUSED; | |
774 | int opindex; | |
775 | const CGEN_FIELDS * fields; | |
776 | { | |
777 | bfd_vma value; | |
778 | ||
779 | switch (opindex) | |
780 | { | |
781 | case IP2K_OPERAND_ADDR16CJP : | |
782 | value = fields->f_addr16cjp; | |
783 | break; | |
784 | case IP2K_OPERAND_ADDR16H : | |
785 | value = fields->f_imm8; | |
786 | break; | |
787 | case IP2K_OPERAND_ADDR16L : | |
788 | value = fields->f_imm8; | |
789 | break; | |
790 | case IP2K_OPERAND_ADDR16P : | |
791 | value = fields->f_page3; | |
792 | break; | |
793 | case IP2K_OPERAND_BITNO : | |
794 | value = fields->f_bitno; | |
795 | break; | |
796 | case IP2K_OPERAND_CBIT : | |
797 | value = 0; | |
798 | break; | |
799 | case IP2K_OPERAND_DCBIT : | |
800 | value = 0; | |
801 | break; | |
802 | case IP2K_OPERAND_FR : | |
803 | value = fields->f_reg; | |
804 | break; | |
805 | case IP2K_OPERAND_LIT8 : | |
806 | value = fields->f_imm8; | |
807 | break; | |
808 | case IP2K_OPERAND_PABITS : | |
809 | value = 0; | |
810 | break; | |
811 | case IP2K_OPERAND_RETI3 : | |
812 | value = fields->f_reti3; | |
813 | break; | |
814 | case IP2K_OPERAND_ZBIT : | |
815 | value = 0; | |
816 | break; | |
817 | ||
818 | default : | |
819 | /* xgettext:c-format */ | |
820 | fprintf (stderr, _("Unrecognized field %d while getting vma operand.\n"), | |
821 | opindex); | |
822 | abort (); | |
823 | } | |
824 | ||
825 | return value; | |
826 | } | |
827 | ||
828 | void ip2k_cgen_set_int_operand | |
829 | PARAMS ((CGEN_CPU_DESC, int, CGEN_FIELDS *, int)); | |
830 | void ip2k_cgen_set_vma_operand | |
831 | PARAMS ((CGEN_CPU_DESC, int, CGEN_FIELDS *, bfd_vma)); | |
832 | ||
833 | /* Stuffing values in cgen_fields is handled by a collection of functions. | |
834 | They are distinguished by the type of the VALUE argument they accept. | |
835 | TODO: floating point, inlining support, remove cases where argument type | |
836 | not appropriate. */ | |
837 | ||
838 | void | |
839 | ip2k_cgen_set_int_operand (cd, opindex, fields, value) | |
840 | CGEN_CPU_DESC cd ATTRIBUTE_UNUSED; | |
841 | int opindex; | |
842 | CGEN_FIELDS * fields; | |
843 | int value; | |
844 | { | |
845 | switch (opindex) | |
846 | { | |
847 | case IP2K_OPERAND_ADDR16CJP : | |
848 | fields->f_addr16cjp = value; | |
849 | break; | |
850 | case IP2K_OPERAND_ADDR16H : | |
851 | fields->f_imm8 = value; | |
852 | break; | |
853 | case IP2K_OPERAND_ADDR16L : | |
854 | fields->f_imm8 = value; | |
855 | break; | |
856 | case IP2K_OPERAND_ADDR16P : | |
857 | fields->f_page3 = value; | |
858 | break; | |
859 | case IP2K_OPERAND_BITNO : | |
860 | fields->f_bitno = value; | |
861 | break; | |
862 | case IP2K_OPERAND_CBIT : | |
863 | break; | |
864 | case IP2K_OPERAND_DCBIT : | |
865 | break; | |
866 | case IP2K_OPERAND_FR : | |
867 | fields->f_reg = value; | |
868 | break; | |
869 | case IP2K_OPERAND_LIT8 : | |
870 | fields->f_imm8 = value; | |
871 | break; | |
872 | case IP2K_OPERAND_PABITS : | |
873 | break; | |
874 | case IP2K_OPERAND_RETI3 : | |
875 | fields->f_reti3 = value; | |
876 | break; | |
877 | case IP2K_OPERAND_ZBIT : | |
878 | break; | |
879 | ||
880 | default : | |
881 | /* xgettext:c-format */ | |
882 | fprintf (stderr, _("Unrecognized field %d while setting int operand.\n"), | |
883 | opindex); | |
884 | abort (); | |
885 | } | |
886 | } | |
887 | ||
888 | void | |
889 | ip2k_cgen_set_vma_operand (cd, opindex, fields, value) | |
890 | CGEN_CPU_DESC cd ATTRIBUTE_UNUSED; | |
891 | int opindex; | |
892 | CGEN_FIELDS * fields; | |
893 | bfd_vma value; | |
894 | { | |
895 | switch (opindex) | |
896 | { | |
897 | case IP2K_OPERAND_ADDR16CJP : | |
898 | fields->f_addr16cjp = value; | |
899 | break; | |
900 | case IP2K_OPERAND_ADDR16H : | |
901 | fields->f_imm8 = value; | |
902 | break; | |
903 | case IP2K_OPERAND_ADDR16L : | |
904 | fields->f_imm8 = value; | |
905 | break; | |
906 | case IP2K_OPERAND_ADDR16P : | |
907 | fields->f_page3 = value; | |
908 | break; | |
909 | case IP2K_OPERAND_BITNO : | |
910 | fields->f_bitno = value; | |
911 | break; | |
912 | case IP2K_OPERAND_CBIT : | |
913 | break; | |
914 | case IP2K_OPERAND_DCBIT : | |
915 | break; | |
916 | case IP2K_OPERAND_FR : | |
917 | fields->f_reg = value; | |
918 | break; | |
919 | case IP2K_OPERAND_LIT8 : | |
920 | fields->f_imm8 = value; | |
921 | break; | |
922 | case IP2K_OPERAND_PABITS : | |
923 | break; | |
924 | case IP2K_OPERAND_RETI3 : | |
925 | fields->f_reti3 = value; | |
926 | break; | |
927 | case IP2K_OPERAND_ZBIT : | |
928 | break; | |
929 | ||
930 | default : | |
931 | /* xgettext:c-format */ | |
932 | fprintf (stderr, _("Unrecognized field %d while setting vma operand.\n"), | |
933 | opindex); | |
934 | abort (); | |
935 | } | |
936 | } | |
937 | ||
938 | /* Function to call before using the instruction builder tables. */ | |
939 | ||
940 | void | |
941 | ip2k_cgen_init_ibld_table (cd) | |
942 | CGEN_CPU_DESC cd; | |
943 | { | |
944 | cd->insert_handlers = & ip2k_cgen_insert_handlers[0]; | |
945 | cd->extract_handlers = & ip2k_cgen_extract_handlers[0]; | |
946 | ||
947 | cd->insert_operand = ip2k_cgen_insert_operand; | |
948 | cd->extract_operand = ip2k_cgen_extract_operand; | |
949 | ||
950 | cd->get_int_operand = ip2k_cgen_get_int_operand; | |
951 | cd->set_int_operand = ip2k_cgen_set_int_operand; | |
952 | cd->get_vma_operand = ip2k_cgen_get_vma_operand; | |
953 | cd->set_vma_operand = ip2k_cgen_set_vma_operand; | |
954 | } |