Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Instruction printing code for the ARC. |
060d22b0 NC |
2 | Copyright 1994, 1995, 1997, 1998, 2000, 2001 |
3 | Free Software Foundation, Inc. | |
252b5132 RH |
4 | Contributed by Doug Evans (dje@cygnus.com). |
5 | ||
0d2bcfaf NC |
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 | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
252b5132 | 10 | |
0d2bcfaf NC |
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. | |
252b5132 | 15 | |
0d2bcfaf NC |
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 | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
252b5132 | 19 | |
0d2bcfaf NC |
20 | #include <ansidecl.h> |
21 | #include <libiberty.h> | |
252b5132 RH |
22 | #include "dis-asm.h" |
23 | #include "opcode/arc.h" | |
24 | #include "elf-bfd.h" | |
25 | #include "elf/arc.h" | |
0d2bcfaf | 26 | #include <string.h> |
252b5132 RH |
27 | #include "opintl.h" |
28 | ||
0d2bcfaf NC |
29 | #include <stdarg.h> |
30 | #include "arc-dis.h" | |
31 | #include "arc-ext.h" | |
252b5132 | 32 | |
0d2bcfaf NC |
33 | #ifndef dbg |
34 | #define dbg (0) | |
35 | #endif | |
252b5132 | 36 | |
279a96ca AJ |
37 | #define BIT(word,n) ((word) & (1 << n)) |
38 | #define BITS(word,s,e) (((word) << (31 - e)) >> (s + (31 - e))) | |
39 | #define OPCODE(word) (BITS ((word), 27, 31)) | |
40 | #define FIELDA(word) (BITS ((word), 21, 26)) | |
41 | #define FIELDB(word) (BITS ((word), 15, 20)) | |
42 | #define FIELDC(word) (BITS ((word), 9, 14)) | |
252b5132 | 43 | |
0d2bcfaf NC |
44 | /* FIELD D is signed in all of its uses, so we make sure argument is |
45 | treated as signed for bit shifting purposes: */ | |
279a96ca | 46 | #define FIELDD(word) (BITS (((signed int)word), 0, 8)) |
0d2bcfaf NC |
47 | |
48 | #define PUT_NEXT_WORD_IN(a) \ | |
49 | do \ | |
50 | { \ | |
51 | if (is_limm == 1 && !NEXT_WORD (1)) \ | |
52 | mwerror (state, _("Illegal limm reference in last instruction!\n")); \ | |
53 | a = state->words[1]; \ | |
54 | } \ | |
55 | while (0) | |
56 | ||
57 | #define CHECK_FLAG_COND_NULLIFY() \ | |
58 | do \ | |
59 | { \ | |
60 | if (is_shimm == 0) \ | |
61 | { \ | |
62 | flag = BIT (state->words[0], 8); \ | |
63 | state->nullifyMode = BITS (state->words[0], 5, 6); \ | |
64 | cond = BITS (state->words[0], 0, 4); \ | |
65 | } \ | |
66 | } \ | |
67 | while (0) | |
68 | ||
69 | #define CHECK_COND() \ | |
70 | do \ | |
71 | { \ | |
72 | if (is_shimm == 0) \ | |
73 | cond = BITS (state->words[0], 0, 4); \ | |
74 | } \ | |
75 | while (0) | |
76 | ||
77 | #define CHECK_FIELD(field) \ | |
78 | do \ | |
79 | { \ | |
80 | if (field == 62) \ | |
81 | { \ | |
82 | is_limm++; \ | |
83 | field##isReg = 0; \ | |
84 | PUT_NEXT_WORD_IN (field); \ | |
85 | limm_value = field; \ | |
86 | } \ | |
87 | else if (field > 60) \ | |
88 | { \ | |
89 | field##isReg = 0; \ | |
90 | is_shimm++; \ | |
91 | flag = (field == 61); \ | |
92 | field = FIELDD (state->words[0]); \ | |
93 | } \ | |
94 | } \ | |
95 | while (0) | |
96 | ||
97 | #define CHECK_FIELD_A() \ | |
98 | do \ | |
99 | { \ | |
100 | fieldA = FIELDA(state->words[0]); \ | |
101 | if (fieldA > 60) \ | |
102 | { \ | |
103 | fieldAisReg = 0; \ | |
104 | fieldA = 0; \ | |
105 | } \ | |
106 | } \ | |
107 | while (0) | |
108 | ||
109 | #define CHECK_FIELD_B() \ | |
110 | do \ | |
111 | { \ | |
112 | fieldB = FIELDB (state->words[0]); \ | |
113 | CHECK_FIELD (fieldB); \ | |
114 | } \ | |
115 | while (0) | |
116 | ||
117 | #define CHECK_FIELD_C() \ | |
118 | do \ | |
119 | { \ | |
120 | fieldC = FIELDC (state->words[0]); \ | |
121 | CHECK_FIELD (fieldC); \ | |
122 | } \ | |
123 | while (0) | |
124 | ||
125 | #define IS_SMALL(x) (((field##x) < 256) && ((field##x) > -257)) | |
126 | #define IS_REG(x) (field##x##isReg) | |
127 | #define WRITE_FORMAT_LB_Rx_RB(x) WRITE_FORMAT(x,"[","]","","") | |
128 | #define WRITE_FORMAT_x_COMMA_LB(x) WRITE_FORMAT(x,"",",[","",",[") | |
129 | #define WRITE_FORMAT_COMMA_x_RB(x) WRITE_FORMAT(x,",","]",",","]") | |
130 | #define WRITE_FORMAT_x_RB(x) WRITE_FORMAT(x,"","]","","]") | |
131 | #define WRITE_FORMAT_COMMA_x(x) WRITE_FORMAT(x,",","",",","") | |
132 | #define WRITE_FORMAT_x_COMMA(x) WRITE_FORMAT(x,"",",","",",") | |
133 | #define WRITE_FORMAT_x(x) WRITE_FORMAT(x,"","","","") | |
134 | #define WRITE_FORMAT(x,cb1,ca1,cb,ca) strcat (formatString, \ | |
135 | (IS_REG (x) ? cb1"%r"ca1 : \ | |
136 | usesAuxReg ? cb"%a"ca : \ | |
137 | IS_SMALL (x) ? cb"%d"ca : cb"%h"ca)) | |
279a96ca | 138 | #define WRITE_FORMAT_RB() strcat (formatString, "]") |
0d2bcfaf | 139 | #define WRITE_COMMENT(str) (state->comm[state->commNum++] = (str)) |
279a96ca | 140 | #define WRITE_NOP_COMMENT() if (!fieldAisReg && !flag) WRITE_COMMENT ("nop"); |
0d2bcfaf | 141 | |
279a96ca | 142 | #define NEXT_WORD(x) (offset += 4, state->words[x]) |
0d2bcfaf | 143 | |
279a96ca | 144 | #define add_target(x) (state->targets[state->tcnt++] = (x)) |
0d2bcfaf NC |
145 | |
146 | static char comment_prefix[] = "\t; "; | |
147 | ||
279a96ca AJ |
148 | static const char *core_reg_name PARAMS ((struct arcDisState *, int)); |
149 | static const char *aux_reg_name PARAMS ((struct arcDisState *, int)); | |
150 | static const char *cond_code_name PARAMS ((struct arcDisState *, int)); | |
151 | static const char *instruction_name | |
152 | PARAMS ((struct arcDisState *, int, int, int *)); | |
153 | static void mwerror PARAMS ((struct arcDisState *, const char *)); | |
154 | static const char *post_address PARAMS ((struct arcDisState *, int)); | |
155 | static void write_comments_ | |
156 | PARAMS ((struct arcDisState *, int, int, long int)); | |
157 | static void write_instr_name_ | |
158 | PARAMS ((struct arcDisState *, const char *, int, int, int, int, int, int)); | |
159 | static int dsmOneArcInst PARAMS ((bfd_vma, struct arcDisState *)); | |
160 | static const char *_coreRegName PARAMS ((void *, int)); | |
161 | static int decodeInstr PARAMS ((bfd_vma, disassemble_info *)); | |
162 | ||
0d2bcfaf NC |
163 | static const char * |
164 | core_reg_name (state, val) | |
165 | struct arcDisState * state; | |
279a96ca | 166 | int val; |
252b5132 | 167 | { |
0d2bcfaf NC |
168 | if (state->coreRegName) |
169 | return (*state->coreRegName)(state->_this, val); | |
170 | return 0; | |
171 | } | |
252b5132 | 172 | |
0d2bcfaf NC |
173 | static const char * |
174 | aux_reg_name (state, val) | |
175 | struct arcDisState * state; | |
279a96ca | 176 | int val; |
0d2bcfaf NC |
177 | { |
178 | if (state->auxRegName) | |
179 | return (*state->auxRegName)(state->_this, val); | |
180 | return 0; | |
181 | } | |
252b5132 | 182 | |
0d2bcfaf NC |
183 | static const char * |
184 | cond_code_name (state, val) | |
185 | struct arcDisState * state; | |
279a96ca | 186 | int val; |
0d2bcfaf NC |
187 | { |
188 | if (state->condCodeName) | |
189 | return (*state->condCodeName)(state->_this, val); | |
190 | return 0; | |
191 | } | |
192 | ||
193 | static const char * | |
194 | instruction_name (state, op1, op2, flags) | |
195 | struct arcDisState * state; | |
196 | int op1; | |
197 | int op2; | |
279a96ca | 198 | int * flags; |
0d2bcfaf NC |
199 | { |
200 | if (state->instName) | |
201 | return (*state->instName)(state->_this, op1, op2, flags); | |
202 | return 0; | |
203 | } | |
204 | ||
205 | static void | |
206 | mwerror (state, msg) | |
207 | struct arcDisState * state; | |
279a96ca | 208 | const char * msg; |
0d2bcfaf NC |
209 | { |
210 | if (state->err != 0) | |
211 | (*state->err)(state->_this, (msg)); | |
212 | } | |
213 | ||
214 | static const char * | |
215 | post_address (state, addr) | |
216 | struct arcDisState * state; | |
279a96ca | 217 | int addr; |
0d2bcfaf NC |
218 | { |
219 | static char id[3 * ARRAY_SIZE (state->addresses)]; | |
220 | int j, i = state->acnt; | |
221 | ||
222 | if (i < ((int) ARRAY_SIZE (state->addresses))) | |
252b5132 | 223 | { |
0d2bcfaf NC |
224 | state->addresses[i] = addr; |
225 | ++state->acnt; | |
226 | j = i*3; | |
227 | id[j+0] = '@'; | |
228 | id[j+1] = '0'+i; | |
229 | id[j+2] = 0; | |
279a96ca | 230 | |
0d2bcfaf | 231 | return id + j; |
252b5132 | 232 | } |
0d2bcfaf NC |
233 | return ""; |
234 | } | |
252b5132 | 235 | |
279a96ca | 236 | static void |
0d2bcfaf NC |
237 | my_sprintf ( |
238 | struct arcDisState * state, | |
239 | char * buf, | |
240 | const char * format, | |
241 | ...) | |
242 | { | |
279a96ca | 243 | char *bp; |
0d2bcfaf NC |
244 | const char *p; |
245 | int size, leading_zero, regMap[2]; | |
246 | long auxNum; | |
247 | va_list ap; | |
279a96ca | 248 | |
0d2bcfaf | 249 | va_start (ap, format); |
279a96ca AJ |
250 | |
251 | bp = buf; | |
0d2bcfaf NC |
252 | *bp = 0; |
253 | p = format; | |
254 | auxNum = -1; | |
255 | regMap[0] = 0; | |
256 | regMap[1] = 0; | |
279a96ca AJ |
257 | |
258 | while (1) | |
0d2bcfaf NC |
259 | switch (*p++) |
260 | { | |
261 | case 0: | |
262 | goto DOCOMM; /* (return) */ | |
279a96ca AJ |
263 | default: |
264 | *bp++ = p[-1]; | |
0d2bcfaf NC |
265 | break; |
266 | case '%': | |
267 | size = 0; | |
268 | leading_zero = 0; | |
269 | RETRY: ; | |
279a96ca | 270 | switch (*p++) |
0d2bcfaf NC |
271 | { |
272 | case '0': | |
273 | case '1': | |
274 | case '2': | |
275 | case '3': | |
276 | case '4': | |
277 | case '5': | |
278 | case '6': | |
279 | case '7': | |
280 | case '8': | |
281 | case '9': | |
282 | { | |
283 | /* size. */ | |
284 | size = p[-1] - '0'; | |
285 | if (size == 0) | |
286 | leading_zero = 1; /* e.g. %08x */ | |
287 | while (*p >= '0' && *p <= '9') | |
288 | { | |
289 | size = size * 10 + *p - '0'; | |
290 | p++; | |
291 | } | |
292 | goto RETRY; | |
293 | } | |
294 | #define inc_bp() bp = bp + strlen (bp) | |
252b5132 | 295 | |
279a96ca | 296 | case 'h': |
0d2bcfaf NC |
297 | { |
298 | unsigned u = va_arg (ap, int); | |
252b5132 | 299 | |
0d2bcfaf NC |
300 | /* Hex. We can change the format to 0x%08x in |
301 | one place, here, if we wish. | |
302 | We add underscores for easy reading. */ | |
279a96ca | 303 | if (u > 65536) |
0d2bcfaf | 304 | sprintf (bp, "0x%x_%04x", u >> 16, u & 0xffff); |
279a96ca | 305 | else |
0d2bcfaf NC |
306 | sprintf (bp, "0x%x", u); |
307 | inc_bp (); | |
279a96ca | 308 | } |
0d2bcfaf | 309 | break; |
279a96ca | 310 | case 'X': case 'x': |
0d2bcfaf NC |
311 | { |
312 | int val = va_arg (ap, int); | |
252b5132 | 313 | |
279a96ca | 314 | if (size != 0) |
0d2bcfaf NC |
315 | if (leading_zero) |
316 | sprintf (bp, "%0*x", size, val); | |
317 | else | |
318 | sprintf (bp, "%*x", size, val); | |
319 | else | |
320 | sprintf (bp, "%x", val); | |
321 | inc_bp (); | |
322 | } | |
323 | break; | |
279a96ca | 324 | case 'd': |
252b5132 | 325 | { |
0d2bcfaf | 326 | int val = va_arg (ap, int); |
279a96ca | 327 | |
0d2bcfaf NC |
328 | if (size != 0) |
329 | sprintf (bp, "%*d", size, val); | |
330 | else | |
331 | sprintf (bp, "%d", val); | |
332 | inc_bp (); | |
252b5132 | 333 | } |
0d2bcfaf | 334 | break; |
279a96ca | 335 | case 'r': |
0d2bcfaf NC |
336 | { |
337 | /* Register. */ | |
338 | int val = va_arg (ap, int); | |
279a96ca | 339 | |
0d2bcfaf NC |
340 | #define REG2NAME(num, name) case num: sprintf (bp, ""name); \ |
341 | regMap[(num < 32) ? 0 : 1] |= 1 << (num - ((num < 32) ? 0 : 32)); break; | |
279a96ca AJ |
342 | |
343 | switch (val) | |
0d2bcfaf NC |
344 | { |
345 | REG2NAME (26, "gp"); | |
346 | REG2NAME (27, "fp"); | |
347 | REG2NAME (28, "sp"); | |
348 | REG2NAME (29, "ilink1"); | |
349 | REG2NAME (30, "ilink2"); | |
350 | REG2NAME (31, "blink"); | |
351 | REG2NAME (60, "lp_count"); | |
352 | default: | |
353 | { | |
354 | const char * ext; | |
355 | ||
356 | ext = core_reg_name (state, val); | |
357 | if (ext) | |
358 | sprintf (bp, "%s", ext); | |
359 | else | |
360 | sprintf (bp,"r%d",val); | |
361 | } | |
362 | break; | |
363 | } | |
364 | inc_bp (); | |
365 | } break; | |
279a96ca AJ |
366 | |
367 | case 'a': | |
0d2bcfaf NC |
368 | { |
369 | /* Aux Register. */ | |
370 | int val = va_arg (ap, int); | |
252b5132 | 371 | |
0d2bcfaf | 372 | #define AUXREG2NAME(num, name) case num: sprintf (bp,name); break; |
252b5132 | 373 | |
279a96ca | 374 | switch (val) |
0d2bcfaf NC |
375 | { |
376 | AUXREG2NAME (0x0, "status"); | |
377 | AUXREG2NAME (0x1, "semaphore"); | |
378 | AUXREG2NAME (0x2, "lp_start"); | |
379 | AUXREG2NAME (0x3, "lp_end"); | |
380 | AUXREG2NAME (0x4, "identity"); | |
381 | AUXREG2NAME (0x5, "debug"); | |
382 | default: | |
383 | { | |
384 | const char *ext; | |
385 | ||
386 | ext = aux_reg_name (state, val); | |
387 | if (ext) | |
388 | sprintf (bp, "%s", ext); | |
389 | else | |
390 | my_sprintf (state, bp, "%h", val); | |
391 | } | |
392 | break; | |
393 | } | |
394 | inc_bp (); | |
395 | } | |
396 | break; | |
279a96ca AJ |
397 | |
398 | case 's': | |
252b5132 | 399 | { |
0d2bcfaf NC |
400 | sprintf (bp, "%s", va_arg (ap, char *)); |
401 | inc_bp (); | |
252b5132 | 402 | } |
0d2bcfaf | 403 | break; |
279a96ca | 404 | |
0d2bcfaf NC |
405 | default: |
406 | fprintf (stderr, "?? format %c\n", p[-1]); | |
407 | break; | |
408 | } | |
409 | } | |
410 | ||
411 | DOCOMM: *bp = 0; | |
412 | } | |
413 | ||
279a96ca | 414 | static void |
0d2bcfaf NC |
415 | write_comments_(state, shimm, is_limm, limm_value) |
416 | struct arcDisState * state; | |
417 | int shimm; | |
418 | int is_limm; | |
419 | long limm_value; | |
420 | { | |
279a96ca | 421 | if (state->commentBuffer != 0) |
0d2bcfaf NC |
422 | { |
423 | int i; | |
424 | ||
279a96ca | 425 | if (is_limm) |
0d2bcfaf NC |
426 | { |
427 | const char *name = post_address (state, limm_value + shimm); | |
428 | ||
429 | if (*name != 0) | |
430 | WRITE_COMMENT (name); | |
431 | } | |
279a96ca | 432 | for (i = 0; i < state->commNum; i++) |
0d2bcfaf NC |
433 | { |
434 | if (i == 0) | |
435 | strcpy (state->commentBuffer, comment_prefix); | |
252b5132 | 436 | else |
279a96ca | 437 | strcat (state->commentBuffer, ", "); |
0d2bcfaf | 438 | strncat (state->commentBuffer, state->comm[i], sizeof (state->commentBuffer)); |
252b5132 | 439 | } |
0d2bcfaf NC |
440 | } |
441 | } | |
252b5132 | 442 | |
0d2bcfaf NC |
443 | #define write_comments2(x) write_comments_(state, x, is_limm, limm_value) |
444 | #define write_comments() write_comments2(0) | |
445 | ||
446 | static const char *condName[] = { | |
447 | /* 0..15. */ | |
279a96ca | 448 | "" , "z" , "nz" , "p" , "n" , "c" , "nc" , "v" , |
0d2bcfaf NC |
449 | "nv" , "gt" , "ge" , "lt" , "le" , "hi" , "ls" , "pnz" |
450 | }; | |
451 | ||
279a96ca | 452 | static void |
0d2bcfaf NC |
453 | write_instr_name_(state, instrName, cond, condCodeIsPartOfName, flag, signExtend, addrWriteBack, directMem) |
454 | struct arcDisState * state; | |
455 | const char * instrName; | |
456 | int cond; | |
457 | int condCodeIsPartOfName; | |
458 | int flag; | |
459 | int signExtend; | |
460 | int addrWriteBack; | |
461 | int directMem; | |
462 | { | |
463 | strcpy (state->instrBuffer, instrName); | |
464 | ||
279a96ca | 465 | if (cond > 0) |
0d2bcfaf NC |
466 | { |
467 | const char *cc = 0; | |
468 | ||
469 | if (!condCodeIsPartOfName) | |
470 | strcat (state->instrBuffer, "."); | |
471 | ||
472 | if (cond < 16) | |
473 | cc = condName[cond]; | |
474 | else | |
475 | cc = cond_code_name (state, cond); | |
476 | ||
477 | if (!cc) | |
478 | cc = "???"; | |
479 | ||
480 | strcat (state->instrBuffer, cc); | |
481 | } | |
482 | ||
483 | if (flag) | |
484 | strcat (state->instrBuffer, ".f"); | |
485 | ||
279a96ca | 486 | switch (state->nullifyMode) |
0d2bcfaf NC |
487 | { |
488 | case BR_exec_always: | |
489 | strcat (state->instrBuffer, ".d"); | |
490 | break; | |
491 | case BR_exec_when_jump: | |
492 | strcat (state->instrBuffer, ".jd"); | |
493 | break; | |
494 | } | |
495 | ||
496 | if (signExtend) | |
497 | strcat (state->instrBuffer, ".x"); | |
498 | ||
499 | if (addrWriteBack) | |
500 | strcat (state->instrBuffer, ".a"); | |
501 | ||
502 | if (directMem) | |
503 | strcat (state->instrBuffer, ".di"); | |
504 | } | |
505 | ||
506 | #define write_instr_name() \ | |
507 | do \ | |
508 | { \ | |
509 | write_instr_name_(state, instrName,cond, condCodeIsPartOfName, \ | |
510 | flag, signExtend, addrWriteBack, directMem); \ | |
511 | formatString[0] = '\0'; \ | |
512 | } \ | |
513 | while (0) | |
514 | ||
279a96ca AJ |
515 | enum { |
516 | op_LD0 = 0, op_LD1 = 1, op_ST = 2, op_3 = 3, | |
0d2bcfaf | 517 | op_BC = 4, op_BLC = 5, op_LPC = 6, op_JC = 7, |
279a96ca | 518 | op_ADD = 8, op_ADC = 9, op_SUB = 10, op_SBC = 11, |
0d2bcfaf NC |
519 | op_AND = 12, op_OR = 13, op_BIC = 14, op_XOR = 15 |
520 | }; | |
521 | ||
522 | extern disassemble_info tm_print_insn_info; | |
252b5132 | 523 | |
279a96ca | 524 | static int |
0d2bcfaf NC |
525 | dsmOneArcInst (addr, state) |
526 | bfd_vma addr; | |
527 | struct arcDisState * state; | |
528 | { | |
529 | int condCodeIsPartOfName = 0; | |
530 | int decodingClass; | |
531 | const char * instrName; | |
532 | int repeatsOp = 0; | |
533 | int fieldAisReg = 1; | |
534 | int fieldBisReg = 1; | |
535 | int fieldCisReg = 1; | |
536 | int fieldA; | |
537 | int fieldB; | |
538 | int fieldC = 0; | |
539 | int flag = 0; | |
540 | int cond = 0; | |
541 | int is_shimm = 0; | |
542 | int is_limm = 0; | |
543 | long limm_value = 0; | |
544 | int signExtend = 0; | |
545 | int addrWriteBack = 0; | |
546 | int directMem = 0; | |
547 | int is_linked = 0; | |
548 | int offset = 0; | |
549 | int usesAuxReg = 0; | |
550 | int flags; | |
551 | int ignoreFirstOpd; | |
552 | char formatString[60]; | |
279a96ca | 553 | |
0d2bcfaf NC |
554 | state->instructionLen = 4; |
555 | state->nullifyMode = BR_exec_when_no_jump; | |
556 | state->opWidth = 12; | |
557 | state->isBranch = 0; | |
279a96ca | 558 | |
0d2bcfaf NC |
559 | state->_mem_load = 0; |
560 | state->_ea_present = 0; | |
561 | state->_load_len = 0; | |
562 | state->ea_reg1 = no_reg; | |
563 | state->ea_reg2 = no_reg; | |
564 | state->_offset = 0; | |
279a96ca | 565 | |
0d2bcfaf NC |
566 | if (! NEXT_WORD (0)) |
567 | return 0; | |
279a96ca | 568 | |
0d2bcfaf NC |
569 | state->_opcode = OPCODE (state->words[0]); |
570 | instrName = 0; | |
571 | decodingClass = 0; /* default! */ | |
572 | repeatsOp = 0; | |
573 | condCodeIsPartOfName=0; | |
574 | state->commNum = 0; | |
575 | state->tcnt = 0; | |
576 | state->acnt = 0; | |
577 | state->flow = noflow; | |
578 | ignoreFirstOpd = 0; | |
579 | ||
580 | if (state->commentBuffer) | |
581 | state->commentBuffer[0] = '\0'; | |
582 | ||
279a96ca | 583 | switch (state->_opcode) |
0d2bcfaf | 584 | { |
279a96ca AJ |
585 | case op_LD0: |
586 | switch (BITS (state->words[0],1,2)) | |
0d2bcfaf NC |
587 | { |
588 | case 0: | |
589 | instrName = "ld"; | |
590 | state->_load_len = 4; | |
591 | break; | |
592 | case 1: | |
593 | instrName = "ldb"; | |
594 | state->_load_len = 1; | |
595 | break; | |
596 | case 2: | |
597 | instrName = "ldw"; | |
598 | state->_load_len = 2; | |
599 | break; | |
600 | default: | |
279a96ca | 601 | instrName = "??? (0[3])"; |
0d2bcfaf NC |
602 | state->flow = invalid_instr; |
603 | break; | |
604 | } | |
279a96ca | 605 | decodingClass = 5; |
0d2bcfaf | 606 | break; |
279a96ca AJ |
607 | |
608 | case op_LD1: | |
609 | if (BIT (state->words[0],13)) | |
0d2bcfaf | 610 | { |
279a96ca | 611 | instrName = "lr"; |
0d2bcfaf NC |
612 | decodingClass = 10; |
613 | } | |
279a96ca | 614 | else |
0d2bcfaf | 615 | { |
279a96ca | 616 | switch (BITS (state->words[0],10,11)) |
252b5132 | 617 | { |
0d2bcfaf NC |
618 | case 0: |
619 | instrName = "ld"; | |
620 | state->_load_len = 4; | |
621 | break; | |
622 | case 1: | |
623 | instrName = "ldb"; | |
624 | state->_load_len = 1; | |
625 | break; | |
626 | case 2: | |
627 | instrName = "ldw"; | |
628 | state->_load_len = 2; | |
629 | break; | |
630 | default: | |
279a96ca | 631 | instrName = "??? (1[3])"; |
0d2bcfaf NC |
632 | state->flow = invalid_instr; |
633 | break; | |
252b5132 | 634 | } |
0d2bcfaf NC |
635 | decodingClass = 6; |
636 | } | |
637 | break; | |
279a96ca | 638 | |
0d2bcfaf | 639 | case op_ST: |
279a96ca | 640 | if (BIT (state->words[0],25)) |
0d2bcfaf NC |
641 | { |
642 | instrName = "sr"; | |
643 | decodingClass = 8; | |
644 | } | |
279a96ca | 645 | else |
0d2bcfaf | 646 | { |
279a96ca | 647 | switch (BITS (state->words[0],22,23)) |
0d2bcfaf NC |
648 | { |
649 | case 0: | |
650 | instrName = "st"; | |
651 | break; | |
652 | case 1: | |
653 | instrName = "stb"; | |
654 | break; | |
655 | case 2: | |
656 | instrName = "stw"; | |
657 | break; | |
658 | default: | |
279a96ca | 659 | instrName = "??? (2[3])"; |
0d2bcfaf NC |
660 | state->flow = invalid_instr; |
661 | break; | |
662 | } | |
663 | decodingClass = 7; | |
664 | } | |
665 | break; | |
279a96ca | 666 | |
0d2bcfaf NC |
667 | case op_3: |
668 | decodingClass = 1; /* default for opcode 3... */ | |
279a96ca | 669 | switch (FIELDC (state->words[0])) |
0d2bcfaf NC |
670 | { |
671 | case 0: | |
279a96ca | 672 | instrName = "flag"; |
0d2bcfaf NC |
673 | decodingClass = 2; |
674 | break; | |
675 | case 1: | |
676 | instrName = "asr"; | |
677 | break; | |
678 | case 2: | |
679 | instrName = "lsr"; | |
680 | break; | |
681 | case 3: | |
682 | instrName = "ror"; | |
683 | break; | |
684 | case 4: | |
685 | instrName = "rrc"; | |
686 | break; | |
687 | case 5: | |
688 | instrName = "sexb"; | |
689 | break; | |
690 | case 6: | |
691 | instrName = "sexw"; | |
692 | break; | |
693 | case 7: | |
694 | instrName = "extb"; | |
695 | break; | |
696 | case 8: | |
697 | instrName = "extw"; | |
698 | break; | |
279a96ca | 699 | case 0x3f: |
0d2bcfaf NC |
700 | { |
701 | decodingClass = 9; | |
279a96ca | 702 | switch( FIELDD (state->words[0]) ) |
0d2bcfaf NC |
703 | { |
704 | case 0: | |
705 | instrName = "brk"; | |
706 | break; | |
707 | case 1: | |
708 | instrName = "sleep"; | |
709 | break; | |
710 | case 2: | |
711 | instrName = "swi"; | |
712 | break; | |
713 | default: | |
714 | instrName = "???"; | |
715 | state->flow=invalid_instr; | |
716 | break; | |
717 | } | |
718 | } | |
719 | break; | |
279a96ca | 720 | |
0d2bcfaf NC |
721 | /* ARC Extension Library Instructions |
722 | NOTE: We assume that extension codes are these instrs. */ | |
723 | default: | |
724 | instrName = instruction_name (state, | |
725 | state->_opcode, | |
726 | FIELDC (state->words[0]), | |
727 | & flags); | |
728 | if (!instrName) | |
252b5132 | 729 | { |
0d2bcfaf NC |
730 | instrName = "???"; |
731 | state->flow = invalid_instr; | |
252b5132 | 732 | } |
0d2bcfaf NC |
733 | if (flags & IGNORE_FIRST_OPD) |
734 | ignoreFirstOpd = 1; | |
735 | break; | |
736 | } | |
737 | break; | |
252b5132 | 738 | |
0d2bcfaf | 739 | case op_BC: |
279a96ca | 740 | instrName = "b"; |
0d2bcfaf NC |
741 | case op_BLC: |
742 | if (!instrName) | |
279a96ca | 743 | instrName = "bl"; |
0d2bcfaf NC |
744 | case op_LPC: |
745 | if (!instrName) | |
279a96ca | 746 | instrName = "lp"; |
0d2bcfaf NC |
747 | case op_JC: |
748 | if (!instrName) | |
749 | { | |
279a96ca | 750 | if (BITS (state->words[0],9,9)) |
252b5132 | 751 | { |
279a96ca | 752 | instrName = "jl"; |
0d2bcfaf | 753 | is_linked = 1; |
252b5132 | 754 | } |
279a96ca | 755 | else |
252b5132 | 756 | { |
279a96ca | 757 | instrName = "j"; |
0d2bcfaf | 758 | is_linked = 0; |
252b5132 | 759 | } |
0d2bcfaf NC |
760 | } |
761 | condCodeIsPartOfName = 1; | |
762 | decodingClass = ((state->_opcode == op_JC) ? 4 : 3); | |
763 | state->isBranch = 1; | |
764 | break; | |
279a96ca | 765 | |
0d2bcfaf NC |
766 | case op_ADD: |
767 | case op_ADC: | |
768 | case op_AND: | |
769 | repeatsOp = (FIELDC (state->words[0]) == FIELDB (state->words[0])); | |
770 | decodingClass = 0; | |
252b5132 | 771 | |
279a96ca | 772 | switch (state->_opcode) |
0d2bcfaf NC |
773 | { |
774 | case op_ADD: | |
775 | instrName = (repeatsOp ? "asl" : "add"); | |
776 | break; | |
777 | case op_ADC: | |
778 | instrName = (repeatsOp ? "rlc" : "adc"); | |
779 | break; | |
780 | case op_AND: | |
781 | instrName = (repeatsOp ? "mov" : "and"); | |
782 | break; | |
783 | } | |
784 | break; | |
279a96ca | 785 | |
0d2bcfaf NC |
786 | case op_SUB: instrName = "sub"; |
787 | break; | |
788 | case op_SBC: instrName = "sbc"; | |
789 | break; | |
790 | case op_OR: instrName = "or"; | |
791 | break; | |
792 | case op_BIC: instrName = "bic"; | |
793 | break; | |
252b5132 | 794 | |
0d2bcfaf NC |
795 | case op_XOR: |
796 | if (state->words[0] == 0x7fffffff) | |
797 | { | |
798 | /* nop encoded as xor -1, -1, -1 */ | |
799 | instrName = "nop"; | |
800 | decodingClass = 9; | |
801 | } | |
279a96ca | 802 | else |
0d2bcfaf NC |
803 | instrName = "xor"; |
804 | break; | |
279a96ca | 805 | |
0d2bcfaf NC |
806 | default: |
807 | instrName = instruction_name (state,state->_opcode,0,&flags); | |
808 | /* if (instrName) printf("FLAGS=0x%x\n", flags); */ | |
809 | if (!instrName) | |
810 | { | |
811 | instrName = "???"; | |
812 | state->flow=invalid_instr; | |
813 | } | |
814 | if (flags & IGNORE_FIRST_OPD) | |
815 | ignoreFirstOpd = 1; | |
816 | break; | |
817 | } | |
279a96ca | 818 | |
0d2bcfaf NC |
819 | fieldAisReg = fieldBisReg = fieldCisReg = 1; /* Assume regs for now. */ |
820 | flag = cond = is_shimm = is_limm = 0; | |
821 | state->nullifyMode = BR_exec_when_no_jump; /* 0 */ | |
822 | signExtend = addrWriteBack = directMem = 0; | |
823 | usesAuxReg = 0; | |
279a96ca AJ |
824 | |
825 | switch (decodingClass) | |
0d2bcfaf NC |
826 | { |
827 | case 0: | |
828 | CHECK_FIELD_A (); | |
829 | CHECK_FIELD_B (); | |
830 | if (!repeatsOp) | |
831 | CHECK_FIELD_C (); | |
832 | CHECK_FLAG_COND_NULLIFY (); | |
279a96ca | 833 | |
0d2bcfaf | 834 | write_instr_name (); |
279a96ca | 835 | if (!ignoreFirstOpd) |
0d2bcfaf NC |
836 | { |
837 | WRITE_FORMAT_x (A); | |
838 | WRITE_FORMAT_COMMA_x (B); | |
839 | if (!repeatsOp) | |
840 | WRITE_FORMAT_COMMA_x (C); | |
841 | WRITE_NOP_COMMENT (); | |
842 | my_sprintf (state, state->operandBuffer, formatString, fieldA, fieldB, fieldC); | |
843 | } | |
279a96ca | 844 | else |
0d2bcfaf NC |
845 | { |
846 | WRITE_FORMAT_x (B); | |
847 | if (!repeatsOp) | |
848 | WRITE_FORMAT_COMMA_x (C); | |
849 | my_sprintf (state, state->operandBuffer, formatString, fieldB, fieldC); | |
850 | } | |
851 | write_comments (); | |
852 | break; | |
279a96ca | 853 | |
0d2bcfaf NC |
854 | case 1: |
855 | CHECK_FIELD_A (); | |
856 | CHECK_FIELD_B (); | |
857 | CHECK_FLAG_COND_NULLIFY (); | |
279a96ca | 858 | |
0d2bcfaf | 859 | write_instr_name (); |
279a96ca | 860 | if (!ignoreFirstOpd) |
0d2bcfaf NC |
861 | { |
862 | WRITE_FORMAT_x (A); | |
863 | WRITE_FORMAT_COMMA_x (B); | |
864 | WRITE_NOP_COMMENT (); | |
279a96ca | 865 | my_sprintf (state, state->operandBuffer, formatString, fieldA, fieldB); |
0d2bcfaf | 866 | } |
279a96ca | 867 | else |
0d2bcfaf NC |
868 | { |
869 | WRITE_FORMAT_x (B); | |
279a96ca | 870 | my_sprintf (state, state->operandBuffer, formatString, fieldB); |
0d2bcfaf NC |
871 | } |
872 | write_comments (); | |
873 | break; | |
279a96ca | 874 | |
0d2bcfaf NC |
875 | case 2: |
876 | CHECK_FIELD_B (); | |
877 | CHECK_FLAG_COND_NULLIFY (); | |
878 | flag = 0; /* this is the FLAG instruction -- it's redundant */ | |
279a96ca | 879 | |
0d2bcfaf NC |
880 | write_instr_name (); |
881 | WRITE_FORMAT_x (B); | |
882 | my_sprintf (state, state->operandBuffer, formatString, fieldB); | |
883 | write_comments (); | |
884 | break; | |
279a96ca | 885 | |
0d2bcfaf NC |
886 | case 3: |
887 | fieldA = BITS (state->words[0],7,26) << 2; | |
888 | fieldA = (fieldA << 10) >> 10; /* make it signed */ | |
889 | fieldA += addr + 4; | |
890 | CHECK_FLAG_COND_NULLIFY (); | |
891 | flag = 0; | |
279a96ca | 892 | |
0d2bcfaf NC |
893 | write_instr_name (); |
894 | /* This address could be a label we know. Convert it. */ | |
279a96ca | 895 | if (state->_opcode != op_LPC /* LP */) |
0d2bcfaf NC |
896 | { |
897 | add_target (fieldA); /* For debugger. */ | |
898 | state->flow = state->_opcode == op_BLC /* BL */ | |
899 | ? direct_call | |
900 | : direct_jump; | |
901 | /* indirect calls are achieved by "lr blink,[status]; | |
902 | lr dest<- func addr; j [dest]" */ | |
279a96ca AJ |
903 | } |
904 | ||
0d2bcfaf NC |
905 | strcat (formatString, "%s"); /* address/label name */ |
906 | my_sprintf (state, state->operandBuffer, formatString, post_address (state, fieldA)); | |
907 | write_comments (); | |
908 | break; | |
279a96ca | 909 | |
0d2bcfaf NC |
910 | case 4: |
911 | /* For op_JC -- jump to address specified. | |
912 | Also covers jump and link--bit 9 of the instr. word | |
913 | selects whether linked, thus "is_linked" is set above. */ | |
914 | fieldA = 0; | |
915 | CHECK_FIELD_B (); | |
916 | CHECK_FLAG_COND_NULLIFY (); | |
279a96ca AJ |
917 | |
918 | if (!fieldBisReg) | |
0d2bcfaf NC |
919 | { |
920 | fieldAisReg = 0; | |
921 | fieldA = (fieldB >> 25) & 0x7F; /* flags */ | |
922 | fieldB = (fieldB & 0xFFFFFF) << 2; | |
923 | state->flow = is_linked ? direct_call : direct_jump; | |
924 | add_target (fieldB); | |
925 | /* screwy JLcc requires .jd mode to execute correctly | |
926 | * but we pretend it is .nd (no delay slot). */ | |
927 | if (is_linked && state->nullifyMode == BR_exec_when_jump) | |
928 | state->nullifyMode = BR_exec_when_no_jump; | |
929 | } | |
279a96ca | 930 | else |
0d2bcfaf NC |
931 | { |
932 | state->flow = is_linked ? indirect_call : indirect_jump; | |
933 | /* We should also treat this as indirect call if NOT linked | |
934 | * but the preceding instruction was a "lr blink,[status]" | |
935 | * and we have a delay slot with "add blink,blink,2". | |
936 | * For now we can't detect such. */ | |
937 | state->register_for_indirect_jump = fieldB; | |
938 | } | |
279a96ca | 939 | |
0d2bcfaf | 940 | write_instr_name (); |
279a96ca | 941 | strcat (formatString, |
0d2bcfaf | 942 | IS_REG (B) ? "[%r]" : "%s"); /* address/label name */ |
279a96ca | 943 | if (fieldA != 0) |
0d2bcfaf NC |
944 | { |
945 | fieldAisReg = 0; | |
946 | WRITE_FORMAT_COMMA_x (A); | |
947 | } | |
948 | if (IS_REG (B)) | |
949 | my_sprintf (state, state->operandBuffer, formatString, fieldB, fieldA); | |
950 | else | |
279a96ca | 951 | my_sprintf (state, state->operandBuffer, formatString, |
0d2bcfaf NC |
952 | post_address (state, fieldB), fieldA); |
953 | write_comments (); | |
954 | break; | |
279a96ca | 955 | |
0d2bcfaf NC |
956 | case 5: |
957 | /* LD instruction. | |
958 | B and C can be regs, or one (both?) can be limm. */ | |
959 | CHECK_FIELD_A (); | |
960 | CHECK_FIELD_B (); | |
961 | CHECK_FIELD_C (); | |
962 | if (dbg) | |
963 | printf ("5:b reg %d %d c reg %d %d \n", | |
964 | fieldBisReg,fieldB,fieldCisReg,fieldC); | |
965 | state->_offset = 0; | |
966 | state->_ea_present = 1; | |
967 | if (fieldBisReg) | |
968 | state->ea_reg1 = fieldB; | |
969 | else | |
970 | state->_offset += fieldB; | |
971 | if (fieldCisReg) | |
972 | state->ea_reg2 = fieldC; | |
973 | else | |
974 | state->_offset += fieldC; | |
975 | state->_mem_load = 1; | |
279a96ca | 976 | |
0d2bcfaf NC |
977 | directMem = BIT (state->words[0],5); |
978 | addrWriteBack = BIT (state->words[0],3); | |
979 | signExtend = BIT (state->words[0],0); | |
279a96ca | 980 | |
0d2bcfaf NC |
981 | write_instr_name (); |
982 | WRITE_FORMAT_x_COMMA_LB(A); | |
983 | if (fieldBisReg || fieldB != 0) | |
984 | WRITE_FORMAT_x_COMMA (B); | |
985 | else | |
986 | fieldB = fieldC; | |
279a96ca | 987 | |
0d2bcfaf NC |
988 | WRITE_FORMAT_x_RB (C); |
989 | my_sprintf (state, state->operandBuffer, formatString, fieldA, fieldB, fieldC); | |
990 | write_comments (); | |
991 | break; | |
279a96ca | 992 | |
0d2bcfaf NC |
993 | case 6: |
994 | /* LD instruction. */ | |
995 | CHECK_FIELD_B (); | |
996 | CHECK_FIELD_A (); | |
997 | fieldC = FIELDD (state->words[0]); | |
279a96ca | 998 | |
0d2bcfaf NC |
999 | if (dbg) |
1000 | printf ("6:b reg %d %d c 0x%x \n", | |
1001 | fieldBisReg, fieldB, fieldC); | |
1002 | state->_ea_present = 1; | |
1003 | state->_offset = fieldC; | |
1004 | state->_mem_load = 1; | |
1005 | if (fieldBisReg) | |
1006 | state->ea_reg1 = fieldB; | |
1007 | /* field B is either a shimm (same as fieldC) or limm (different!) | |
1008 | Say ea is not present, so only one of us will do the name lookup. */ | |
1009 | else | |
1010 | state->_offset += fieldB, state->_ea_present = 0; | |
279a96ca | 1011 | |
0d2bcfaf NC |
1012 | directMem = BIT (state->words[0],14); |
1013 | addrWriteBack = BIT (state->words[0],12); | |
1014 | signExtend = BIT (state->words[0],9); | |
279a96ca | 1015 | |
0d2bcfaf NC |
1016 | write_instr_name (); |
1017 | WRITE_FORMAT_x_COMMA_LB (A); | |
279a96ca | 1018 | if (!fieldBisReg) |
0d2bcfaf NC |
1019 | { |
1020 | fieldB = state->_offset; | |
1021 | WRITE_FORMAT_x_RB (B); | |
1022 | } | |
279a96ca | 1023 | else |
0d2bcfaf NC |
1024 | { |
1025 | WRITE_FORMAT_x (B); | |
279a96ca | 1026 | if (fieldC != 0 && !BIT (state->words[0],13)) |
0d2bcfaf NC |
1027 | { |
1028 | fieldCisReg = 0; | |
1029 | WRITE_FORMAT_COMMA_x_RB (C); | |
252b5132 | 1030 | } |
252b5132 | 1031 | else |
0d2bcfaf | 1032 | WRITE_FORMAT_RB (); |
252b5132 | 1033 | } |
0d2bcfaf NC |
1034 | my_sprintf (state, state->operandBuffer, formatString, fieldA, fieldB, fieldC); |
1035 | write_comments (); | |
1036 | break; | |
279a96ca | 1037 | |
0d2bcfaf NC |
1038 | case 7: |
1039 | /* ST instruction. */ | |
1040 | CHECK_FIELD_B(); | |
1041 | CHECK_FIELD_C(); | |
1042 | fieldA = FIELDD(state->words[0]); /* shimm */ | |
279a96ca | 1043 | |
0d2bcfaf NC |
1044 | /* [B,A offset] */ |
1045 | if (dbg) printf("7:b reg %d %x off %x\n", | |
1046 | fieldBisReg,fieldB,fieldA); | |
1047 | state->_ea_present = 1; | |
1048 | state->_offset = fieldA; | |
1049 | if (fieldBisReg) | |
1050 | state->ea_reg1 = fieldB; | |
279a96ca | 1051 | /* field B is either a shimm (same as fieldA) or limm (different!) |
0d2bcfaf NC |
1052 | Say ea is not present, so only one of us will do the name lookup. |
1053 | (for is_limm we do the name translation here). */ | |
279a96ca | 1054 | else |
0d2bcfaf | 1055 | state->_offset += fieldB, state->_ea_present = 0; |
279a96ca | 1056 | |
0d2bcfaf NC |
1057 | directMem = BIT(state->words[0],26); |
1058 | addrWriteBack = BIT(state->words[0],24); | |
279a96ca | 1059 | |
0d2bcfaf NC |
1060 | write_instr_name(); |
1061 | WRITE_FORMAT_x_COMMA_LB(C); | |
279a96ca AJ |
1062 | |
1063 | if (!fieldBisReg) | |
0d2bcfaf NC |
1064 | { |
1065 | fieldB = state->_offset; | |
1066 | WRITE_FORMAT_x_RB(B); | |
1067 | } | |
279a96ca | 1068 | else |
0d2bcfaf NC |
1069 | { |
1070 | WRITE_FORMAT_x(B); | |
279a96ca | 1071 | if (fieldBisReg && fieldA != 0) |
0d2bcfaf NC |
1072 | { |
1073 | fieldAisReg = 0; | |
1074 | WRITE_FORMAT_COMMA_x_RB(A); | |
1075 | } | |
1076 | else | |
1077 | WRITE_FORMAT_RB(); | |
1078 | } | |
1079 | my_sprintf (state, state->operandBuffer, formatString, fieldC, fieldB, fieldA); | |
1080 | write_comments2(fieldA); | |
1081 | break; | |
1082 | case 8: | |
1083 | /* SR instruction */ | |
1084 | CHECK_FIELD_B(); | |
1085 | CHECK_FIELD_C(); | |
279a96ca | 1086 | |
0d2bcfaf NC |
1087 | write_instr_name(); |
1088 | WRITE_FORMAT_x_COMMA_LB(C); | |
1089 | /* Try to print B as an aux reg if it is not a core reg. */ | |
1090 | usesAuxReg = 1; | |
1091 | WRITE_FORMAT_x(B); | |
1092 | WRITE_FORMAT_RB(); | |
1093 | my_sprintf (state, state->operandBuffer, formatString, fieldC, fieldB); | |
1094 | write_comments(); | |
1095 | break; | |
279a96ca | 1096 | |
0d2bcfaf NC |
1097 | case 9: |
1098 | write_instr_name(); | |
1099 | state->operandBuffer[0] = '\0'; | |
1100 | break; | |
279a96ca | 1101 | |
0d2bcfaf NC |
1102 | case 10: |
1103 | /* LR instruction */ | |
1104 | CHECK_FIELD_A(); | |
1105 | CHECK_FIELD_B(); | |
279a96ca | 1106 | |
0d2bcfaf NC |
1107 | write_instr_name(); |
1108 | WRITE_FORMAT_x_COMMA_LB(A); | |
1109 | /* Try to print B as an aux reg if it is not a core reg. */ | |
1110 | usesAuxReg = 1; | |
1111 | WRITE_FORMAT_x(B); | |
1112 | WRITE_FORMAT_RB(); | |
1113 | my_sprintf (state, state->operandBuffer, formatString, fieldA, fieldB); | |
1114 | write_comments(); | |
1115 | break; | |
279a96ca | 1116 | |
0d2bcfaf NC |
1117 | case 11: |
1118 | CHECK_COND(); | |
1119 | write_instr_name(); | |
1120 | state->operandBuffer[0] = '\0'; | |
1121 | break; | |
279a96ca | 1122 | |
0d2bcfaf NC |
1123 | default: |
1124 | mwerror (state, "Bad decoding class in ARC disassembler"); | |
1125 | break; | |
252b5132 | 1126 | } |
279a96ca | 1127 | |
0d2bcfaf NC |
1128 | state->_cond = cond; |
1129 | return state->instructionLen = offset; | |
1130 | } | |
1131 | ||
252b5132 | 1132 | |
0d2bcfaf NC |
1133 | /* Returns the name the user specified core extension register. */ |
1134 | static const char * | |
1135 | _coreRegName(arg, regval) | |
1136 | void * arg ATTRIBUTE_UNUSED; | |
1137 | int regval; | |
1138 | { | |
1139 | return arcExtMap_coreRegName (regval); | |
252b5132 RH |
1140 | } |
1141 | ||
0d2bcfaf NC |
1142 | /* Returns the name the user specified AUX extension register. */ |
1143 | static const char * | |
1144 | _auxRegName(void *_this ATTRIBUTE_UNUSED, int regval) | |
1145 | { | |
1146 | return arcExtMap_auxRegName(regval); | |
1147 | } | |
252b5132 | 1148 | |
0d2bcfaf NC |
1149 | |
1150 | /* Returns the name the user specified condition code name. */ | |
1151 | static const char * | |
1152 | _condCodeName(void *_this ATTRIBUTE_UNUSED, int regval) | |
252b5132 | 1153 | { |
0d2bcfaf | 1154 | return arcExtMap_condCodeName(regval); |
252b5132 RH |
1155 | } |
1156 | ||
0d2bcfaf NC |
1157 | /* Returns the name the user specified extension instruction. */ |
1158 | static const char * | |
1159 | _instName (void *_this ATTRIBUTE_UNUSED, int majop, int minop, int *flags) | |
252b5132 | 1160 | { |
0d2bcfaf | 1161 | return arcExtMap_instName(majop, minop, flags); |
252b5132 RH |
1162 | } |
1163 | ||
0d2bcfaf NC |
1164 | /* Decode an instruction returning the size of the instruction |
1165 | in bytes or zero if unrecognized. */ | |
252b5132 | 1166 | static int |
0d2bcfaf NC |
1167 | decodeInstr (address, info) |
1168 | bfd_vma address; /* Address of this instruction. */ | |
1169 | disassemble_info * info; | |
1170 | { | |
1171 | int status; | |
1172 | bfd_byte buffer[4]; | |
1173 | struct arcDisState s; /* ARC Disassembler state */ | |
1174 | void *stream = info->stream; /* output stream */ | |
279a96ca | 1175 | fprintf_ftype func = info->fprintf_func; |
0d2bcfaf | 1176 | int bytes; |
279a96ca | 1177 | |
0d2bcfaf | 1178 | memset (&s, 0, sizeof(struct arcDisState)); |
279a96ca | 1179 | |
0d2bcfaf NC |
1180 | /* read first instruction */ |
1181 | status = (*info->read_memory_func) (address, buffer, 4, info); | |
1182 | if (status != 0) | |
1183 | { | |
1184 | (*info->memory_error_func) (status, address, info); | |
1185 | return 0; | |
1186 | } | |
1187 | if (info->endian == BFD_ENDIAN_LITTLE) | |
1188 | s.words[0] = bfd_getl32(buffer); | |
1189 | else | |
1190 | s.words[0] = bfd_getb32(buffer); | |
1191 | /* always read second word in case of limm */ | |
1192 | ||
1193 | /* we ignore the result since last insn may not have a limm */ | |
1194 | status = (*info->read_memory_func) (address + 4, buffer, 4, info); | |
1195 | if (info->endian == BFD_ENDIAN_LITTLE) | |
1196 | s.words[1] = bfd_getl32(buffer); | |
1197 | else | |
1198 | s.words[1] = bfd_getb32(buffer); | |
1199 | ||
1200 | s._this = &s; | |
1201 | s.coreRegName = _coreRegName; | |
1202 | s.auxRegName = _auxRegName; | |
1203 | s.condCodeName = _condCodeName; | |
1204 | s.instName = _instName; | |
1205 | ||
1206 | /* disassemble */ | |
1207 | bytes = dsmOneArcInst(address, (void *)&s); | |
1208 | ||
1209 | /* display the disassembly instruction */ | |
1210 | (*func) (stream, "%08x ", s.words[0]); | |
1211 | (*func) (stream, " "); | |
279a96ca | 1212 | |
0d2bcfaf | 1213 | (*func) (stream, "%-10s ", s.instrBuffer); |
279a96ca | 1214 | |
0d2bcfaf NC |
1215 | if (__TRANSLATION_REQUIRED(s)) |
1216 | { | |
1217 | bfd_vma addr = s.addresses[s.operandBuffer[1] - '0']; | |
1218 | (*info->print_address_func) ((bfd_vma) addr, info); | |
1219 | (*func) (stream, "\n"); | |
1220 | } | |
1221 | else | |
1222 | (*func) (stream, "%s",s.operandBuffer); | |
1223 | return s.instructionLen; | |
1224 | } | |
1225 | ||
1226 | /* Return the print_insn function to use. | |
1227 | Side effect: load (possibly empty) extension section */ | |
1228 | ||
1229 | disassembler_ftype | |
1230 | arc_get_disassembler (void *ptr) | |
252b5132 | 1231 | { |
0d2bcfaf NC |
1232 | if (ptr) |
1233 | build_ARC_extmap (ptr); | |
1234 | return decodeInstr; | |
252b5132 | 1235 | } |