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[netbsd-mini2440.git] / gnu / dist / gdb6 / opcodes / i960-dis.c
blob94f733e2413659cc50e1233658ec25b535cd50f5
1 /* Disassemble i80960 instructions.
2 Copyright 1990, 1991, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2003
3 Free Software Foundation, Inc.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
8 any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; see the file COPYING. If not, write to the
17 Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
18 02110-1301, USA. */
19
20 #include "sysdep.h"
21 #include "dis-asm.h"
22
23 static const char *const reg_names[] = {
24 /* 0 */ "pfp", "sp", "rip", "r3", "r4", "r5", "r6", "r7",
25 /* 8 */ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
26 /* 16 */ "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7",
27 /* 24 */ "g8", "g9", "g10", "g11", "g12", "g13", "g14", "fp",
28 /* 32 */ "pc", "ac", "ip", "tc", "fp0", "fp1", "fp2", "fp3"
29 };
30
31
32 static FILE *stream; /* Output goes here */
33 static struct disassemble_info *info;
34 static void print_addr (bfd_vma);
35 static void ctrl (bfd_vma, unsigned long, unsigned long);
36 static void cobr (bfd_vma, unsigned long, unsigned long);
37 static void reg (unsigned long);
38 static int mem (bfd_vma, unsigned long, unsigned long, int);
39 static void ea (bfd_vma, int, const char *, const char *, int, unsigned int);
40 static void dstop (int, int, int);
41 static void regop (int, int, int, int);
42 static void invalid (int);
43 static int pinsn (bfd_vma, unsigned long, unsigned long);
44 static void put_abs (unsigned long, unsigned long);
45
46
47 /* Print the i960 instruction at address 'memaddr' in debugged memory,
48 on INFO->STREAM. Returns length of the instruction, in bytes. */
49
50 int
51 print_insn_i960 (bfd_vma memaddr, struct disassemble_info *info_arg)
52 {
53 unsigned int word1, word2 = 0xdeadbeef;
54 bfd_byte buffer[8];
55 int status;
56
57 info = info_arg;
58 stream = info->stream;
59
60 /* Read word1. Only read word2 if the instruction
61 needs it, to prevent reading past the end of a section. */
62
63 status = (*info->read_memory_func) (memaddr, (bfd_byte *) buffer, 4, info);
64 if (status != 0)
65 {
66 (*info->memory_error_func) (status, memaddr, info);
67 return -1;
68 }
69
70 word1 = bfd_getl32 (buffer);
71
72 /* Divide instruction set into classes based on high 4 bits of opcode. */
73 switch ( (word1 >> 28) & 0xf )
74 {
75 default:
76 break;
77 case 0x8:
78 case 0x9:
79 case 0xa:
80 case 0xb:
81 case 0xc:
82 /* Read word2. */
83 status = (*info->read_memory_func)
84 (memaddr + 4, (bfd_byte *) (buffer + 4), 4, info);
85 if (status != 0)
86 {
87 (*info->memory_error_func) (status, memaddr, info);
88 return -1;
89 }
90 word2 = bfd_getl32 (buffer + 4);
91 break;
92 }
93
94 return pinsn( memaddr, word1, word2 );
95 }
96 \f
97 #define IN_GDB
98
99 /*****************************************************************************
100 * All code below this point should be identical with that of
101 * the disassembler in gdmp960.
102
103 A noble sentiment, but at least in cosmetic ways (info->fprintf_func), it
104 just ain't so. -kingdon, 31 Mar 93
105 *****************************************************************************/
106
107 struct tabent {
108 char *name;
109 short numops;
110 };
111
112 struct sparse_tabent {
113 int opcode;
114 char *name;
115 short numops;
116 };
117
118 static int
119 pinsn (bfd_vma memaddr, unsigned long word1, unsigned long word2)
120 {
121 int instr_len;
122
123 instr_len = 4;
124 put_abs (word1, word2);
125
126 /* Divide instruction set into classes based on high 4 bits of opcode. */
127 switch ((word1 >> 28) & 0xf)
128 {
129 case 0x0:
130 case 0x1:
131 ctrl (memaddr, word1, word2);
132 break;
133 case 0x2:
134 case 0x3:
135 cobr (memaddr, word1, word2);
136 break;
137 case 0x5:
138 case 0x6:
139 case 0x7:
140 reg (word1);
141 break;
142 case 0x8:
143 case 0x9:
144 case 0xa:
145 case 0xb:
146 case 0xc:
147 instr_len = mem (memaddr, word1, word2, 0);
148 break;
149 default:
150 /* Invalid instruction, print as data word. */
151 invalid (word1);
152 break;
153 }
154 return instr_len;
155 }
156
157 /* CTRL format.. */
158
159 static void
160 ctrl (bfd_vma memaddr, unsigned long word1, unsigned long word2 ATTRIBUTE_UNUSED)
161 {
162 int i;
163 static const struct tabent ctrl_tab[] = {
164 { NULL, 0, }, /* 0x00 */
165 { NULL, 0, }, /* 0x01 */
166 { NULL, 0, }, /* 0x02 */
167 { NULL, 0, }, /* 0x03 */
168 { NULL, 0, }, /* 0x04 */
169 { NULL, 0, }, /* 0x05 */
170 { NULL, 0, }, /* 0x06 */
171 { NULL, 0, }, /* 0x07 */
172 { "b", 1, }, /* 0x08 */
173 { "call", 1, }, /* 0x09 */
174 { "ret", 0, }, /* 0x0a */
175 { "bal", 1, }, /* 0x0b */
176 { NULL, 0, }, /* 0x0c */
177 { NULL, 0, }, /* 0x0d */
178 { NULL, 0, }, /* 0x0e */
179 { NULL, 0, }, /* 0x0f */
180 { "bno", 1, }, /* 0x10 */
181 { "bg", 1, }, /* 0x11 */
182 { "be", 1, }, /* 0x12 */
183 { "bge", 1, }, /* 0x13 */
184 { "bl", 1, }, /* 0x14 */
185 { "bne", 1, }, /* 0x15 */
186 { "ble", 1, }, /* 0x16 */
187 { "bo", 1, }, /* 0x17 */
188 { "faultno", 0, }, /* 0x18 */
189 { "faultg", 0, }, /* 0x19 */
190 { "faulte", 0, }, /* 0x1a */
191 { "faultge", 0, }, /* 0x1b */
192 { "faultl", 0, }, /* 0x1c */
193 { "faultne", 0, }, /* 0x1d */
194 { "faultle", 0, }, /* 0x1e */
195 { "faulto", 0, }, /* 0x1f */
196 };
197
198 i = (word1 >> 24) & 0xff;
199 if ((ctrl_tab[i].name == NULL) || ((word1 & 1) != 0))
200 {
201 invalid (word1);
202 return;
203 }
204
205 (*info->fprintf_func) (stream, ctrl_tab[i].name);
206 if (word1 & 2)
207 /* Predicts branch not taken. */
208 (*info->fprintf_func) (stream, ".f");
209
210 if (ctrl_tab[i].numops == 1)
211 {
212 /* Extract displacement and convert to address. */
213 word1 &= 0x00ffffff;
214
215 if (word1 & 0x00800000)
216 {
217 /* Sign bit is set. */
218 word1 |= (-1 & ~0xffffff); /* Sign extend. */
219 }
220
221 (*info->fprintf_func) (stream, "\t");
222 print_addr (word1 + memaddr);
223 }
224 }
225
226 /* COBR format. */
227
228 static void
229 cobr (bfd_vma memaddr, unsigned long word1, unsigned long word2 ATTRIBUTE_UNUSED)
230 {
231 int src1;
232 int src2;
233 int i;
234
235 static const struct tabent cobr_tab[] = {
236 { "testno", 1, }, /* 0x20 */
237 { "testg", 1, }, /* 0x21 */
238 { "teste", 1, }, /* 0x22 */
239 { "testge", 1, }, /* 0x23 */
240 { "testl", 1, }, /* 0x24 */
241 { "testne", 1, }, /* 0x25 */
242 { "testle", 1, }, /* 0x26 */
243 { "testo", 1, }, /* 0x27 */
244 { NULL, 0, }, /* 0x28 */
245 { NULL, 0, }, /* 0x29 */
246 { NULL, 0, }, /* 0x2a */
247 { NULL, 0, }, /* 0x2b */
248 { NULL, 0, }, /* 0x2c */
249 { NULL, 0, }, /* 0x2d */
250 { NULL, 0, }, /* 0x2e */
251 { NULL, 0, }, /* 0x2f */
252 { "bbc", 3, }, /* 0x30 */
253 { "cmpobg", 3, }, /* 0x31 */
254 { "cmpobe", 3, }, /* 0x32 */
255 { "cmpobge",3, }, /* 0x33 */
256 { "cmpobl", 3, }, /* 0x34 */
257 { "cmpobne",3, }, /* 0x35 */
258 { "cmpoble",3, }, /* 0x36 */
259 { "bbs", 3, }, /* 0x37 */
260 { "cmpibno",3, }, /* 0x38 */
261 { "cmpibg", 3, }, /* 0x39 */
262 { "cmpibe", 3, }, /* 0x3a */
263 { "cmpibge",3, }, /* 0x3b */
264 { "cmpibl", 3, }, /* 0x3c */
265 { "cmpibne",3, }, /* 0x3d */
266 { "cmpible",3, }, /* 0x3e */
267 { "cmpibo", 3, }, /* 0x3f */
268 };
269
270 i = ((word1 >> 24) & 0xff) - 0x20;
271 if (cobr_tab[i].name == NULL)
272 {
273 invalid (word1);
274 return;
275 }
276
277 (*info->fprintf_func) (stream, cobr_tab[i].name);
278
279 /* Predicts branch not taken. */
280 if (word1 & 2)
281 (*info->fprintf_func) (stream, ".f");
282
283 (*info->fprintf_func) (stream, "\t");
284
285 src1 = (word1 >> 19) & 0x1f;
286 src2 = (word1 >> 14) & 0x1f;
287
288 if (word1 & 0x02000)
289 /* M1 is 1 */
290 (*info->fprintf_func) (stream, "%d", src1);
291 else
292 (*info->fprintf_func) (stream, reg_names[src1]);
293
294 if (cobr_tab[i].numops > 1)
295 {
296 if (word1 & 1)
297 /* S2 is 1. */
298 (*info->fprintf_func) (stream, ",sf%d,", src2);
299 else
300 /* S1 is 0. */
301 (*info->fprintf_func) (stream, ",%s,", reg_names[src2]);
302
303 /* Extract displacement and convert to address. */
304 word1 &= 0x00001ffc;
305 if (word1 & 0x00001000)
306 /* Negative displacement. */
307 word1 |= (-1 & ~0x1fff); /* Sign extend. */
308
309 print_addr (memaddr + word1);
310 }
311 }
312
313 /* MEM format. */
314 /* Returns instruction length: 4 or 8. */
315
316 static int
317 mem (bfd_vma memaddr, unsigned long word1, unsigned long word2, int noprint)
318 {
319 int i, j;
320 int len;
321 int mode;
322 int offset;
323 const char *reg1, *reg2, *reg3;
324
325 /* This lookup table is too sparse to make it worth typing in, but not
326 so large as to make a sparse array necessary. We create the table
327 at runtime. */
328
329 /* NOTE: In this table, the meaning of 'numops' is:
330 1: single operand
331 2: 2 operands, load instruction
332 -2: 2 operands, store instruction. */
333 static struct tabent *mem_tab;
334 /* Opcodes of 0x8X, 9X, aX, bX, and cX must be in the table. */
335 #define MEM_MIN 0x80
336 #define MEM_MAX 0xcf
337 #define MEM_SIZ ( * sizeof(struct tabent))
338
339 static const struct sparse_tabent mem_init[] = {
340 { 0x80, "ldob", 2 },
341 { 0x82, "stob", -2 },
342 { 0x84, "bx", 1 },
343 { 0x85, "balx", 2 },
344 { 0x86, "callx", 1 },
345 { 0x88, "ldos", 2 },
346 { 0x8a, "stos", -2 },
347 { 0x8c, "lda", 2 },
348 { 0x90, "ld", 2 },
349 { 0x92, "st", -2 },
350 { 0x98, "ldl", 2 },
351 { 0x9a, "stl", -2 },
352 { 0xa0, "ldt", 2 },
353 { 0xa2, "stt", -2 },
354 { 0xac, "dcinva", 1 },
355 { 0xb0, "ldq", 2 },
356 { 0xb2, "stq", -2 },
357 { 0xc0, "ldib", 2 },
358 { 0xc2, "stib", -2 },
359 { 0xc8, "ldis", 2 },
360 { 0xca, "stis", -2 },
361 { 0, NULL, 0 }
362 };
363 static struct tabent mem_tab_buf[MEM_MAX - MEM_MIN + 1];
364
365 if (mem_tab == NULL)
366 {
367 mem_tab = mem_tab_buf;
368
369 for (i = 0; mem_init[i].opcode != 0; i++)
370 {
371 j = mem_init[i].opcode - MEM_MIN;
372 mem_tab[j].name = mem_init[i].name;
373 mem_tab[j].numops = mem_init[i].numops;
374 }
375 }
376
377 i = ((word1 >> 24) & 0xff) - MEM_MIN;
378 mode = (word1 >> 10) & 0xf;
379
380 if ((mem_tab[i].name != NULL) /* Valid instruction */
381 && ((mode == 5) || (mode >= 12)))
382 /* With 32-bit displacement. */
383 len = 8;
384 else
385 len = 4;
386
387 if (noprint)
388 return len;
389
390 if ((mem_tab[i].name == NULL) || (mode == 6))
391 {
392 invalid (word1);
393 return len;
394 }
395
396 (*info->fprintf_func) (stream, "%s\t", mem_tab[i].name);
397
398 reg1 = reg_names[ (word1 >> 19) & 0x1f ]; /* MEMB only */
399 reg2 = reg_names[ (word1 >> 14) & 0x1f ];
400 reg3 = reg_names[ word1 & 0x1f ]; /* MEMB only */
401 offset = word1 & 0xfff; /* MEMA only */
402
403 switch (mem_tab[i].numops)
404 {
405 case 2: /* LOAD INSTRUCTION */
406 if (mode & 4)
407 { /* MEMB FORMAT */
408 ea (memaddr, mode, reg2, reg3, word1, word2);
409 (*info->fprintf_func) (stream, ",%s", reg1);
410 }
411 else
412 { /* MEMA FORMAT */
413 (*info->fprintf_func) (stream, "0x%x", (unsigned) offset);
414
415 if (mode & 8)
416 (*info->fprintf_func) (stream, "(%s)", reg2);
417
418 (*info->fprintf_func)(stream, ",%s", reg1);
419 }
420 break;
421
422 case -2: /* STORE INSTRUCTION */
423 if (mode & 4)
424 {
425 /* MEMB FORMAT */
426 (*info->fprintf_func) (stream, "%s,", reg1);
427 ea (memaddr, mode, reg2, reg3, word1, word2);
428 }
429 else
430 {
431 /* MEMA FORMAT */
432 (*info->fprintf_func) (stream, "%s,0x%x", reg1, (unsigned) offset);
433
434 if (mode & 8)
435 (*info->fprintf_func) (stream, "(%s)", reg2);
436 }
437 break;
438
439 case 1: /* BX/CALLX INSTRUCTION */
440 if (mode & 4)
441 {
442 /* MEMB FORMAT */
443 ea (memaddr, mode, reg2, reg3, word1, word2);
444 }
445 else
446 {
447 /* MEMA FORMAT */
448 (*info->fprintf_func) (stream, "0x%x", (unsigned) offset);
449 if (mode & 8)
450 (*info->fprintf_func) (stream, "(%s)", reg2);
451 }
452 break;
453 }
454
455 return len;
456 }
457
458 /* REG format. */
459
460 static void
461 reg (unsigned long word1)
462 {
463 int i, j;
464 int opcode;
465 int fp;
466 int m1, m2, m3;
467 int s1, s2;
468 int src, src2, dst;
469 char *mnemp;
470
471 /* This lookup table is too sparse to make it worth typing in, but not
472 so large as to make a sparse array necessary. We create the table
473 at runtime. */
474
475 /* NOTE: In this table, the meaning of 'numops' is:
476 1: single operand, which is NOT a destination.
477 -1: single operand, which IS a destination.
478 2: 2 operands, the 2nd of which is NOT a destination.
479 -2: 2 operands, the 2nd of which IS a destination.
480 3: 3 operands
481
482 If an opcode mnemonic begins with "F", it is a floating-point
483 opcode (the "F" is not printed). */
484
485 static struct tabent *reg_tab;
486 static const struct sparse_tabent reg_init[] =
487 {
488 #define REG_MIN 0x580
489 { 0x580, "notbit", 3 },
490 { 0x581, "and", 3 },
491 { 0x582, "andnot", 3 },
492 { 0x583, "setbit", 3 },
493 { 0x584, "notand", 3 },
494 { 0x586, "xor", 3 },
495 { 0x587, "or", 3 },
496 { 0x588, "nor", 3 },
497 { 0x589, "xnor", 3 },
498 { 0x58a, "not", -2 },
499 { 0x58b, "ornot", 3 },
500 { 0x58c, "clrbit", 3 },
501 { 0x58d, "notor", 3 },
502 { 0x58e, "nand", 3 },
503 { 0x58f, "alterbit", 3 },
504 { 0x590, "addo", 3 },
505 { 0x591, "addi", 3 },
506 { 0x592, "subo", 3 },
507 { 0x593, "subi", 3 },
508 { 0x594, "cmpob", 2 },
509 { 0x595, "cmpib", 2 },
510 { 0x596, "cmpos", 2 },
511 { 0x597, "cmpis", 2 },
512 { 0x598, "shro", 3 },
513 { 0x59a, "shrdi", 3 },
514 { 0x59b, "shri", 3 },
515 { 0x59c, "shlo", 3 },
516 { 0x59d, "rotate", 3 },
517 { 0x59e, "shli", 3 },
518 { 0x5a0, "cmpo", 2 },
519 { 0x5a1, "cmpi", 2 },
520 { 0x5a2, "concmpo", 2 },
521 { 0x5a3, "concmpi", 2 },
522 { 0x5a4, "cmpinco", 3 },
523 { 0x5a5, "cmpinci", 3 },
524 { 0x5a6, "cmpdeco", 3 },
525 { 0x5a7, "cmpdeci", 3 },
526 { 0x5ac, "scanbyte", 2 },
527 { 0x5ad, "bswap", -2 },
528 { 0x5ae, "chkbit", 2 },
529 { 0x5b0, "addc", 3 },
530 { 0x5b2, "subc", 3 },
531 { 0x5b4, "intdis", 0 },
532 { 0x5b5, "inten", 0 },
533 { 0x5cc, "mov", -2 },
534 { 0x5d8, "eshro", 3 },
535 { 0x5dc, "movl", -2 },
536 { 0x5ec, "movt", -2 },
537 { 0x5fc, "movq", -2 },
538 { 0x600, "synmov", 2 },
539 { 0x601, "synmovl", 2 },
540 { 0x602, "synmovq", 2 },
541 { 0x603, "cmpstr", 3 },
542 { 0x604, "movqstr", 3 },
543 { 0x605, "movstr", 3 },
544 { 0x610, "atmod", 3 },
545 { 0x612, "atadd", 3 },
546 { 0x613, "inspacc", -2 },
547 { 0x614, "ldphy", -2 },
548 { 0x615, "synld", -2 },
549 { 0x617, "fill", 3 },
550 { 0x630, "sdma", 3 },
551 { 0x631, "udma", 0 },
552 { 0x640, "spanbit", -2 },
553 { 0x641, "scanbit", -2 },
554 { 0x642, "daddc", 3 },
555 { 0x643, "dsubc", 3 },
556 { 0x644, "dmovt", -2 },
557 { 0x645, "modac", 3 },
558 { 0x646, "condrec", -2 },
559 { 0x650, "modify", 3 },
560 { 0x651, "extract", 3 },
561 { 0x654, "modtc", 3 },
562 { 0x655, "modpc", 3 },
563 { 0x656, "receive", -2 },
564 { 0x658, "intctl", -2 },
565 { 0x659, "sysctl", 3 },
566 { 0x65b, "icctl", 3 },
567 { 0x65c, "dcctl", 3 },
568 { 0x65d, "halt", 0 },
569 { 0x660, "calls", 1 },
570 { 0x662, "send", 3 },
571 { 0x663, "sendserv", 1 },
572 { 0x664, "resumprcs", 1 },
573 { 0x665, "schedprcs", 1 },
574 { 0x666, "saveprcs", 0 },
575 { 0x668, "condwait", 1 },
576 { 0x669, "wait", 1 },
577 { 0x66a, "signal", 1 },
578 { 0x66b, "mark", 0 },
579 { 0x66c, "fmark", 0 },
580 { 0x66d, "flushreg", 0 },
581 { 0x66f, "syncf", 0 },
582 { 0x670, "emul", 3 },
583 { 0x671, "ediv", 3 },
584 { 0x673, "ldtime", -1 },
585 { 0x674, "Fcvtir", -2 },
586 { 0x675, "Fcvtilr", -2 },
587 { 0x676, "Fscalerl", 3 },
588 { 0x677, "Fscaler", 3 },
589 { 0x680, "Fatanr", 3 },
590 { 0x681, "Flogepr", 3 },
591 { 0x682, "Flogr", 3 },
592 { 0x683, "Fremr", 3 },
593 { 0x684, "Fcmpor", 2 },
594 { 0x685, "Fcmpr", 2 },
595 { 0x688, "Fsqrtr", -2 },
596 { 0x689, "Fexpr", -2 },
597 { 0x68a, "Flogbnr", -2 },
598 { 0x68b, "Froundr", -2 },
599 { 0x68c, "Fsinr", -2 },
600 { 0x68d, "Fcosr", -2 },
601 { 0x68e, "Ftanr", -2 },
602 { 0x68f, "Fclassr", 1 },
603 { 0x690, "Fatanrl", 3 },
604 { 0x691, "Flogeprl", 3 },
605 { 0x692, "Flogrl", 3 },
606 { 0x693, "Fremrl", 3 },
607 { 0x694, "Fcmporl", 2 },
608 { 0x695, "Fcmprl", 2 },
609 { 0x698, "Fsqrtrl", -2 },
610 { 0x699, "Fexprl", -2 },
611 { 0x69a, "Flogbnrl", -2 },
612 { 0x69b, "Froundrl", -2 },
613 { 0x69c, "Fsinrl", -2 },
614 { 0x69d, "Fcosrl", -2 },
615 { 0x69e, "Ftanrl", -2 },
616 { 0x69f, "Fclassrl", 1 },
617 { 0x6c0, "Fcvtri", -2 },
618 { 0x6c1, "Fcvtril", -2 },
619 { 0x6c2, "Fcvtzri", -2 },
620 { 0x6c3, "Fcvtzril", -2 },
621 { 0x6c9, "Fmovr", -2 },
622 { 0x6d9, "Fmovrl", -2 },
623 { 0x6e1, "Fmovre", -2 },
624 { 0x6e2, "Fcpysre", 3 },
625 { 0x6e3, "Fcpyrsre", 3 },
626 { 0x701, "mulo", 3 },
627 { 0x708, "remo", 3 },
628 { 0x70b, "divo", 3 },
629 { 0x741, "muli", 3 },
630 { 0x748, "remi", 3 },
631 { 0x749, "modi", 3 },
632 { 0x74b, "divi", 3 },
633 { 0x780, "addono", 3 },
634 { 0x781, "addino", 3 },
635 { 0x782, "subono", 3 },
636 { 0x783, "subino", 3 },
637 { 0x784, "selno", 3 },
638 { 0x78b, "Fdivr", 3 },
639 { 0x78c, "Fmulr", 3 },
640 { 0x78d, "Fsubr", 3 },
641 { 0x78f, "Faddr", 3 },
642 { 0x790, "addog", 3 },
643 { 0x791, "addig", 3 },
644 { 0x792, "subog", 3 },
645 { 0x793, "subig", 3 },
646 { 0x794, "selg", 3 },
647 { 0x79b, "Fdivrl", 3 },
648 { 0x79c, "Fmulrl", 3 },
649 { 0x79d, "Fsubrl", 3 },
650 { 0x79f, "Faddrl", 3 },
651 { 0x7a0, "addoe", 3 },
652 { 0x7a1, "addie", 3 },
653 { 0x7a2, "suboe", 3 },
654 { 0x7a3, "subie", 3 },
655 { 0x7a4, "sele", 3 },
656 { 0x7b0, "addoge", 3 },
657 { 0x7b1, "addige", 3 },
658 { 0x7b2, "suboge", 3 },
659 { 0x7b3, "subige", 3 },
660 { 0x7b4, "selge", 3 },
661 { 0x7c0, "addol", 3 },
662 { 0x7c1, "addil", 3 },
663 { 0x7c2, "subol", 3 },
664 { 0x7c3, "subil", 3 },
665 { 0x7c4, "sell", 3 },
666 { 0x7d0, "addone", 3 },
667 { 0x7d1, "addine", 3 },
668 { 0x7d2, "subone", 3 },
669 { 0x7d3, "subine", 3 },
670 { 0x7d4, "selne", 3 },
671 { 0x7e0, "addole", 3 },
672 { 0x7e1, "addile", 3 },
673 { 0x7e2, "subole", 3 },
674 { 0x7e3, "subile", 3 },
675 { 0x7e4, "selle", 3 },
676 { 0x7f0, "addoo", 3 },
677 { 0x7f1, "addio", 3 },
678 { 0x7f2, "suboo", 3 },
679 { 0x7f3, "subio", 3 },
680 { 0x7f4, "selo", 3 },
681 #define REG_MAX 0x7f4
682 { 0, NULL, 0 }
683 };
684 static struct tabent reg_tab_buf[REG_MAX - REG_MIN + 1];
685
686 if (reg_tab == NULL)
687 {
688 reg_tab = reg_tab_buf;
689
690 for (i = 0; reg_init[i].opcode != 0; i++)
691 {
692 j = reg_init[i].opcode - REG_MIN;
693 reg_tab[j].name = reg_init[i].name;
694 reg_tab[j].numops = reg_init[i].numops;
695 }
696 }
697
698 opcode = ((word1 >> 20) & 0xff0) | ((word1 >> 7) & 0xf);
699 i = opcode - REG_MIN;
700
701 if ((opcode<REG_MIN) || (opcode>REG_MAX) || (reg_tab[i].name==NULL))
702 {
703 invalid (word1);
704 return;
705 }
706
707 mnemp = reg_tab[i].name;
708 if (*mnemp == 'F')
709 {
710 fp = 1;
711 mnemp++;
712 }
713 else
714 {
715 fp = 0;
716 }
717
718 (*info->fprintf_func) (stream, mnemp);
719
720 s1 = (word1 >> 5) & 1;
721 s2 = (word1 >> 6) & 1;
722 m1 = (word1 >> 11) & 1;
723 m2 = (word1 >> 12) & 1;
724 m3 = (word1 >> 13) & 1;
725 src = word1 & 0x1f;
726 src2 = (word1 >> 14) & 0x1f;
727 dst = (word1 >> 19) & 0x1f;
728
729 if (reg_tab[i].numops != 0)
730 {
731 (*info->fprintf_func) (stream, "\t");
732
733 switch (reg_tab[i].numops)
734 {
735 case 1:
736 regop (m1, s1, src, fp);
737 break;
738 case -1:
739 dstop (m3, dst, fp);
740 break;
741 case 2:
742 regop (m1, s1, src, fp);
743 (*info->fprintf_func) (stream, ",");
744 regop (m2, s2, src2, fp);
745 break;
746 case -2:
747 regop (m1, s1, src, fp);
748 (*info->fprintf_func) (stream, ",");
749 dstop (m3, dst, fp);
750 break;
751 case 3:
752 regop (m1, s1, src, fp);
753 (*info->fprintf_func) (stream, ",");
754 regop (m2, s2, src2, fp);
755 (*info->fprintf_func) (stream, ",");
756 dstop (m3, dst, fp);
757 break;
758 }
759 }
760 }
761
762 /* Print out effective address for memb instructions. */
763
764 static void
765 ea (bfd_vma memaddr, int mode, const char *reg2, const char *reg3, int word1,
766 unsigned int word2)
767 {
768 int scale;
769 static const int scale_tab[] = { 1, 2, 4, 8, 16 };
770
771 scale = (word1 >> 7) & 0x07;
772
773 if ((scale > 4) || (((word1 >> 5) & 0x03) != 0))
774 {
775 invalid (word1);
776 return;
777 }
778 scale = scale_tab[scale];
779
780 switch (mode)
781 {
782 case 4: /* (reg) */
783 (*info->fprintf_func)( stream, "(%s)", reg2 );
784 break;
785 case 5: /* displ+8(ip) */
786 print_addr (word2 + 8 + memaddr);
787 break;
788 case 7: /* (reg)[index*scale] */
789 if (scale == 1)
790 (*info->fprintf_func) (stream, "(%s)[%s]", reg2, reg3);
791 else
792 (*info->fprintf_func) (stream, "(%s)[%s*%d]", reg2, reg3, scale);
793 break;
794 case 12: /* displacement */
795 print_addr ((bfd_vma) word2);
796 break;
797 case 13: /* displ(reg) */
798 print_addr ((bfd_vma) word2);
799 (*info->fprintf_func) (stream, "(%s)", reg2);
800 break;
801 case 14: /* displ[index*scale] */
802 print_addr ((bfd_vma) word2);
803 if (scale == 1)
804 (*info->fprintf_func) (stream, "[%s]", reg3);
805 else
806 (*info->fprintf_func) (stream, "[%s*%d]", reg3, scale);
807 break;
808 case 15: /* displ(reg)[index*scale] */
809 print_addr ((bfd_vma) word2);
810 if (scale == 1)
811 (*info->fprintf_func) (stream, "(%s)[%s]", reg2, reg3);
812 else
813 (*info->fprintf_func) (stream, "(%s)[%s*%d]", reg2, reg3, scale);
814 break;
815 default:
816 invalid (word1);
817 return;
818 }
819 }
820
821
822 /* Register Instruction Operand. */
823
824 static void
825 regop (int mode, int spec, int reg, int fp)
826 {
827 if (fp)
828 {
829 /* Floating point instruction. */
830 if (mode == 1)
831 {
832 /* FP operand. */
833 switch (reg)
834 {
835 case 0: (*info->fprintf_func) (stream, "fp0");
836 break;
837 case 1: (*info->fprintf_func) (stream, "fp1");
838 break;
839 case 2: (*info->fprintf_func) (stream, "fp2");
840 break;
841 case 3: (*info->fprintf_func) (stream, "fp3");
842 break;
843 case 16: (*info->fprintf_func) (stream, "0f0.0");
844 break;
845 case 22: (*info->fprintf_func) (stream, "0f1.0");
846 break;
847 default: (*info->fprintf_func) (stream, "?");
848 break;
849 }
850 }
851 else
852 {
853 /* Non-FP register. */
854 (*info->fprintf_func) (stream, reg_names[reg]);
855 }
856 }
857 else
858 {
859 /* Not floating point. */
860 if (mode == 1)
861 {
862 /* Literal. */
863 (*info->fprintf_func) (stream, "%d", reg);
864 }
865 else
866 {
867 /* Register. */
868 if (spec == 0)
869 (*info->fprintf_func) (stream, reg_names[reg]);
870 else
871 (*info->fprintf_func) (stream, "sf%d", reg);
872 }
873 }
874 }
875
876 /* Register Instruction Destination Operand. */
877
878 static void
879 dstop (int mode, int reg, int fp)
880 {
881 /* 'dst' operand can't be a literal. On non-FP instructions, register
882 mode is assumed and "m3" acts as if were "s3"; on FP-instructions,
883 sf registers are not allowed so m3 acts normally. */
884 if (fp)
885 regop (mode, 0, reg, fp);
886 else
887 regop (0, mode, reg, fp);
888 }
889
890 static void
891 invalid (int word1)
892 {
893 (*info->fprintf_func) (stream, ".word\t0x%08x", (unsigned) word1);
894 }
895
896 static void
897 print_addr (bfd_vma a)
898 {
899 (*info->print_address_func) (a, info);
900 }
901
902 static void
903 put_abs (unsigned long word1 ATTRIBUTE_UNUSED,
904 unsigned long word2 ATTRIBUTE_UNUSED)
905 {
906 #ifdef IN_GDB
907 return;
908 #else
909 int len;
910
911 switch ((word1 >> 28) & 0xf)
912 {
913 case 0x8:
914 case 0x9:
915 case 0xa:
916 case 0xb:
917 case 0xc:
918 /* MEM format instruction. */
919 len = mem (0, word1, word2, 1);
920 break;
921 default:
922 len = 4;
923 break;
924 }
925
926 if (len == 8)
927 (*info->fprintf_func) (stream, "%08x %08x\t", word1, word2);
928 else
929 (*info->fprintf_func) (stream, "%08x \t", word1);
930 #endif
931 }
NetBSD on the FriendlyARM MINI2440