Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Print Motorola 68k instructions. |
060d22b0 | 2 | Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
9b201bb5 | 3 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | ||
9b201bb5 NC |
6 | This file is part of the GNU opcodes library. |
7 | ||
8 | This library is free software; you can redistribute it and/or modify | |
3e602632 | 9 | it under the terms of the GNU General Public License as published by |
9b201bb5 NC |
10 | the Free Software Foundation; either version 3, or (at your option) |
11 | any later version. | |
252b5132 | 12 | |
9b201bb5 NC |
13 | It is distributed in the hope that it will be useful, but WITHOUT |
14 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
15 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
16 | License for more details. | |
252b5132 | 17 | |
3e602632 NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
47b0e7ad NC |
20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
21 | MA 02110-1301, USA. */ | |
252b5132 | 22 | |
0d8dfecf | 23 | #include "sysdep.h" |
252b5132 RH |
24 | #include "dis-asm.h" |
25 | #include "floatformat.h" | |
19f33eee | 26 | #include "libiberty.h" |
252b5132 RH |
27 | #include "opintl.h" |
28 | ||
29 | #include "opcode/m68k.h" | |
30 | ||
47b0e7ad | 31 | /* Local function prototypes. */ |
be8c092b NC |
32 | |
33 | const char * const fpcr_names[] = | |
34 | { | |
47b0e7ad NC |
35 | "", "%fpiar", "%fpsr", "%fpiar/%fpsr", "%fpcr", |
36 | "%fpiar/%fpcr", "%fpsr/%fpcr", "%fpiar/%fpsr/%fpcr" | |
ec22bdda | 37 | }; |
252b5132 | 38 | |
be8c092b NC |
39 | static char *const reg_names[] = |
40 | { | |
47b0e7ad NC |
41 | "%d0", "%d1", "%d2", "%d3", "%d4", "%d5", "%d6", "%d7", |
42 | "%a0", "%a1", "%a2", "%a3", "%a4", "%a5", "%fp", "%sp", | |
43 | "%ps", "%pc" | |
ec22bdda | 44 | }; |
252b5132 | 45 | |
be8c092b NC |
46 | /* Name of register halves for MAC/EMAC. |
47 | Seperate from reg_names since 'spu', 'fpl' look weird. */ | |
48 | static char *const reg_half_names[] = | |
49 | { | |
47b0e7ad NC |
50 | "%d0", "%d1", "%d2", "%d3", "%d4", "%d5", "%d6", "%d7", |
51 | "%a0", "%a1", "%a2", "%a3", "%a4", "%a5", "%a6", "%a7", | |
52 | "%ps", "%pc" | |
be8c092b NC |
53 | }; |
54 | ||
55 | /* Sign-extend an (unsigned char). */ | |
252b5132 | 56 | #if __STDC__ == 1 |
ec22bdda | 57 | #define COERCE_SIGNED_CHAR(ch) ((signed char) (ch)) |
252b5132 | 58 | #else |
ec22bdda | 59 | #define COERCE_SIGNED_CHAR(ch) ((int) (((ch) ^ 0x80) & 0xFF) - 128) |
252b5132 RH |
60 | #endif |
61 | ||
62 | /* Get a 1 byte signed integer. */ | |
62443ade NC |
63 | #define NEXTBYTE(p, val) \ |
64 | do \ | |
65 | { \ | |
66 | p += 2; \ | |
9f7678f6 | 67 | if (!FETCH_DATA (info, p)) \ |
62443ade NC |
68 | return -3; \ |
69 | val = COERCE_SIGNED_CHAR (p[-1]); \ | |
70 | } \ | |
71 | while (0) | |
252b5132 RH |
72 | |
73 | /* Get a 2 byte signed integer. */ | |
74 | #define COERCE16(x) ((int) (((x) ^ 0x8000) - 0x8000)) | |
62443ade NC |
75 | |
76 | #define NEXTWORD(p, val, ret_val) \ | |
77 | do \ | |
78 | { \ | |
79 | p += 2; \ | |
9f7678f6 | 80 | if (!FETCH_DATA (info, p)) \ |
62443ade NC |
81 | return ret_val; \ |
82 | val = COERCE16 ((p[-2] << 8) + p[-1]); \ | |
83 | } \ | |
84 | while (0) | |
252b5132 RH |
85 | |
86 | /* Get a 4 byte signed integer. */ | |
87 | #define COERCE32(x) ((bfd_signed_vma) ((x) ^ 0x80000000) - 0x80000000) | |
62443ade NC |
88 | |
89 | #define NEXTLONG(p, val, ret_val) \ | |
90 | do \ | |
91 | { \ | |
92 | p += 4; \ | |
9f7678f6 | 93 | if (!FETCH_DATA (info, p)) \ |
62443ade NC |
94 | return ret_val; \ |
95 | val = COERCE32 ((((((p[-4] << 8) + p[-3]) << 8) + p[-2]) << 8) + p[-1]); \ | |
96 | } \ | |
97 | while (0) | |
252b5132 RH |
98 | |
99 | /* Get a 4 byte unsigned integer. */ | |
62443ade NC |
100 | #define NEXTULONG(p, val) \ |
101 | do \ | |
102 | { \ | |
103 | p += 4; \ | |
9f7678f6 | 104 | if (!FETCH_DATA (info, p)) \ |
62443ade NC |
105 | return -3; \ |
106 | val = (unsigned int) ((((((p[-4] << 8) + p[-3]) << 8) + p[-2]) << 8) + p[-1]); \ | |
107 | } \ | |
108 | while (0) | |
252b5132 RH |
109 | |
110 | /* Get a single precision float. */ | |
62443ade NC |
111 | #define NEXTSINGLE(val, p) \ |
112 | do \ | |
113 | { \ | |
114 | p += 4; \ | |
9f7678f6 | 115 | if (!FETCH_DATA (info, p)) \ |
62443ade NC |
116 | return -3; \ |
117 | floatformat_to_double (& floatformat_ieee_single_big, \ | |
118 | (char *) p - 4, & val); \ | |
119 | } \ | |
120 | while (0) | |
252b5132 RH |
121 | |
122 | /* Get a double precision float. */ | |
62443ade NC |
123 | #define NEXTDOUBLE(val, p) \ |
124 | do \ | |
125 | { \ | |
126 | p += 8; \ | |
9f7678f6 | 127 | if (!FETCH_DATA (info, p)) \ |
62443ade NC |
128 | return -3; \ |
129 | floatformat_to_double (& floatformat_ieee_double_big, \ | |
130 | (char *) p - 8, & val); \ | |
131 | } \ | |
132 | while (0) | |
252b5132 RH |
133 | |
134 | /* Get an extended precision float. */ | |
62443ade NC |
135 | #define NEXTEXTEND(val, p) \ |
136 | do \ | |
137 | { \ | |
138 | p += 12; \ | |
9f7678f6 | 139 | if (!FETCH_DATA (info, p)) \ |
62443ade NC |
140 | return -3; \ |
141 | floatformat_to_double (& floatformat_m68881_ext, \ | |
142 | (char *) p - 12, & val); \ | |
143 | } \ | |
144 | while (0) | |
252b5132 RH |
145 | |
146 | /* Need a function to convert from packed to double | |
147 | precision. Actually, it's easier to print a | |
148 | packed number than a double anyway, so maybe | |
149 | there should be a special case to handle this... */ | |
62443ade NC |
150 | #define NEXTPACKED(p, val) \ |
151 | do \ | |
152 | { \ | |
153 | p += 12; \ | |
9f7678f6 | 154 | if (!FETCH_DATA (info, p)) \ |
62443ade NC |
155 | return -3; \ |
156 | val = 0.0; \ | |
157 | } \ | |
158 | while (0) | |
159 | ||
252b5132 RH |
160 | \f |
161 | /* Maximum length of an instruction. */ | |
162 | #define MAXLEN 22 | |
163 | ||
164 | #include <setjmp.h> | |
165 | ||
47b0e7ad NC |
166 | struct private |
167 | { | |
252b5132 RH |
168 | /* Points to first byte not fetched. */ |
169 | bfd_byte *max_fetched; | |
170 | bfd_byte the_buffer[MAXLEN]; | |
171 | bfd_vma insn_start; | |
252b5132 RH |
172 | }; |
173 | ||
174 | /* Make sure that bytes from INFO->PRIVATE_DATA->BUFFER (inclusive) | |
62443ade | 175 | to ADDR (exclusive) are valid. Returns 1 for success, 0 on error. */ |
252b5132 | 176 | #define FETCH_DATA(info, addr) \ |
ec22bdda | 177 | ((addr) <= ((struct private *) (info->private_data))->max_fetched \ |
252b5132 RH |
178 | ? 1 : fetch_data ((info), (addr))) |
179 | ||
180 | static int | |
cc16ba8c | 181 | fetch_data (struct disassemble_info *info, bfd_byte *addr) |
252b5132 RH |
182 | { |
183 | int status; | |
184 | struct private *priv = (struct private *)info->private_data; | |
185 | bfd_vma start = priv->insn_start + (priv->max_fetched - priv->the_buffer); | |
186 | ||
187 | status = (*info->read_memory_func) (start, | |
188 | priv->max_fetched, | |
189 | addr - priv->max_fetched, | |
190 | info); | |
191 | if (status != 0) | |
192 | { | |
193 | (*info->memory_error_func) (status, start, info); | |
62443ade | 194 | return 0; |
252b5132 RH |
195 | } |
196 | else | |
197 | priv->max_fetched = addr; | |
198 | return 1; | |
199 | } | |
200 | \f | |
47b0e7ad | 201 | /* This function is used to print to the bit-bucket. */ |
252b5132 | 202 | static int |
ec22bdda | 203 | dummy_printer (FILE *file ATTRIBUTE_UNUSED, |
47b0e7ad NC |
204 | const char *format ATTRIBUTE_UNUSED, |
205 | ...) | |
ec22bdda KH |
206 | { |
207 | return 0; | |
208 | } | |
252b5132 RH |
209 | |
210 | static void | |
47b0e7ad NC |
211 | dummy_print_address (bfd_vma vma ATTRIBUTE_UNUSED, |
212 | struct disassemble_info *info ATTRIBUTE_UNUSED) | |
252b5132 RH |
213 | { |
214 | } | |
215 | ||
47b0e7ad NC |
216 | /* Fetch BITS bits from a position in the instruction specified by CODE. |
217 | CODE is a "place to put an argument", or 'x' for a destination | |
218 | that is a general address (mode and register). | |
62443ade NC |
219 | BUFFER contains the instruction. |
220 | Returns -1 on failure. */ | |
be8c092b NC |
221 | |
222 | static int | |
47b0e7ad NC |
223 | fetch_arg (unsigned char *buffer, |
224 | int code, | |
225 | int bits, | |
226 | disassemble_info *info) | |
be8c092b | 227 | { |
47b0e7ad | 228 | int val = 0; |
be8c092b | 229 | |
47b0e7ad | 230 | switch (code) |
be8c092b | 231 | { |
47b0e7ad NC |
232 | case '/': /* MAC/EMAC mask bit. */ |
233 | val = buffer[3] >> 5; | |
234 | break; | |
be8c092b | 235 | |
47b0e7ad NC |
236 | case 'G': /* EMAC ACC load. */ |
237 | val = ((buffer[3] >> 3) & 0x2) | ((~buffer[1] >> 7) & 0x1); | |
238 | break; | |
be8c092b | 239 | |
47b0e7ad NC |
240 | case 'H': /* EMAC ACC !load. */ |
241 | val = ((buffer[3] >> 3) & 0x2) | ((buffer[1] >> 7) & 0x1); | |
242 | break; | |
be8c092b | 243 | |
47b0e7ad NC |
244 | case ']': /* EMAC ACCEXT bit. */ |
245 | val = buffer[0] >> 2; | |
246 | break; | |
be8c092b | 247 | |
47b0e7ad NC |
248 | case 'I': /* MAC/EMAC scale factor. */ |
249 | val = buffer[2] >> 1; | |
250 | break; | |
be8c092b | 251 | |
47b0e7ad NC |
252 | case 'F': /* EMAC ACCx. */ |
253 | val = buffer[0] >> 1; | |
254 | break; | |
be8c092b | 255 | |
47b0e7ad NC |
256 | case 'f': |
257 | val = buffer[1]; | |
258 | break; | |
be8c092b | 259 | |
47b0e7ad NC |
260 | case 's': |
261 | val = buffer[1]; | |
262 | break; | |
be8c092b | 263 | |
47b0e7ad NC |
264 | case 'd': /* Destination, for register or quick. */ |
265 | val = (buffer[0] << 8) + buffer[1]; | |
266 | val >>= 9; | |
267 | break; | |
be8c092b | 268 | |
47b0e7ad NC |
269 | case 'x': /* Destination, for general arg. */ |
270 | val = (buffer[0] << 8) + buffer[1]; | |
271 | val >>= 6; | |
272 | break; | |
be8c092b | 273 | |
47b0e7ad | 274 | case 'k': |
62443ade NC |
275 | if (! FETCH_DATA (info, buffer + 3)) |
276 | return -1; | |
47b0e7ad NC |
277 | val = (buffer[3] >> 4); |
278 | break; | |
be8c092b | 279 | |
47b0e7ad | 280 | case 'C': |
62443ade NC |
281 | if (! FETCH_DATA (info, buffer + 3)) |
282 | return -1; | |
47b0e7ad NC |
283 | val = buffer[3]; |
284 | break; | |
be8c092b | 285 | |
47b0e7ad | 286 | case '1': |
62443ade NC |
287 | if (! FETCH_DATA (info, buffer + 3)) |
288 | return -1; | |
47b0e7ad NC |
289 | val = (buffer[2] << 8) + buffer[3]; |
290 | val >>= 12; | |
291 | break; | |
be8c092b | 292 | |
47b0e7ad | 293 | case '2': |
62443ade NC |
294 | if (! FETCH_DATA (info, buffer + 3)) |
295 | return -1; | |
47b0e7ad NC |
296 | val = (buffer[2] << 8) + buffer[3]; |
297 | val >>= 6; | |
298 | break; | |
be8c092b | 299 | |
47b0e7ad NC |
300 | case '3': |
301 | case 'j': | |
62443ade NC |
302 | if (! FETCH_DATA (info, buffer + 3)) |
303 | return -1; | |
47b0e7ad NC |
304 | val = (buffer[2] << 8) + buffer[3]; |
305 | break; | |
be8c092b | 306 | |
47b0e7ad | 307 | case '4': |
62443ade NC |
308 | if (! FETCH_DATA (info, buffer + 5)) |
309 | return -1; | |
47b0e7ad NC |
310 | val = (buffer[4] << 8) + buffer[5]; |
311 | val >>= 12; | |
312 | break; | |
be8c092b | 313 | |
47b0e7ad | 314 | case '5': |
62443ade NC |
315 | if (! FETCH_DATA (info, buffer + 5)) |
316 | return -1; | |
47b0e7ad NC |
317 | val = (buffer[4] << 8) + buffer[5]; |
318 | val >>= 6; | |
319 | break; | |
be8c092b | 320 | |
47b0e7ad | 321 | case '6': |
62443ade NC |
322 | if (! FETCH_DATA (info, buffer + 5)) |
323 | return -1; | |
47b0e7ad NC |
324 | val = (buffer[4] << 8) + buffer[5]; |
325 | break; | |
252b5132 | 326 | |
47b0e7ad | 327 | case '7': |
62443ade NC |
328 | if (! FETCH_DATA (info, buffer + 3)) |
329 | return -1; | |
47b0e7ad NC |
330 | val = (buffer[2] << 8) + buffer[3]; |
331 | val >>= 7; | |
332 | break; | |
252b5132 | 333 | |
47b0e7ad | 334 | case '8': |
62443ade NC |
335 | if (! FETCH_DATA (info, buffer + 3)) |
336 | return -1; | |
47b0e7ad NC |
337 | val = (buffer[2] << 8) + buffer[3]; |
338 | val >>= 10; | |
339 | break; | |
252b5132 | 340 | |
47b0e7ad | 341 | case '9': |
62443ade NC |
342 | if (! FETCH_DATA (info, buffer + 3)) |
343 | return -1; | |
47b0e7ad NC |
344 | val = (buffer[2] << 8) + buffer[3]; |
345 | val >>= 5; | |
346 | break; | |
252b5132 | 347 | |
47b0e7ad NC |
348 | case 'e': |
349 | val = (buffer[1] >> 6); | |
350 | break; | |
be8c092b | 351 | |
afa2158f | 352 | case 'E': |
62443ade NC |
353 | if (! FETCH_DATA (info, buffer + 3)) |
354 | return -1; | |
afa2158f NS |
355 | val = (buffer[2] >> 1); |
356 | break; | |
357 | ||
47b0e7ad NC |
358 | case 'm': |
359 | val = (buffer[1] & 0x40 ? 0x8 : 0) | |
360 | | ((buffer[0] >> 1) & 0x7) | |
361 | | (buffer[3] & 0x80 ? 0x10 : 0); | |
362 | break; | |
252b5132 | 363 | |
47b0e7ad NC |
364 | case 'n': |
365 | val = (buffer[1] & 0x40 ? 0x8 : 0) | ((buffer[0] >> 1) & 0x7); | |
366 | break; | |
252b5132 | 367 | |
47b0e7ad NC |
368 | case 'o': |
369 | val = (buffer[2] >> 4) | (buffer[3] & 0x80 ? 0x10 : 0); | |
370 | break; | |
be8c092b | 371 | |
47b0e7ad NC |
372 | case 'M': |
373 | val = (buffer[1] & 0xf) | (buffer[3] & 0x40 ? 0x10 : 0); | |
374 | break; | |
252b5132 | 375 | |
47b0e7ad NC |
376 | case 'N': |
377 | val = (buffer[3] & 0xf) | (buffer[3] & 0x40 ? 0x10 : 0); | |
378 | break; | |
379 | ||
380 | case 'h': | |
381 | val = buffer[2] >> 2; | |
382 | break; | |
383 | ||
384 | default: | |
385 | abort (); | |
386 | } | |
387 | ||
afa2158f NS |
388 | /* bits is never too big. */ |
389 | return val & ((1 << bits) - 1); | |
47b0e7ad NC |
390 | } |
391 | ||
392 | /* Check if an EA is valid for a particular code. This is required | |
393 | for the EMAC instructions since the type of source address determines | |
394 | if it is a EMAC-load instruciton if the EA is mode 2-5, otherwise it | |
395 | is a non-load EMAC instruction and the bits mean register Ry. | |
396 | A similar case exists for the movem instructions where the register | |
397 | mask is interpreted differently for different EAs. */ | |
398 | ||
399 | static bfd_boolean | |
400 | m68k_valid_ea (char code, int val) | |
401 | { | |
402 | int mode, mask; | |
403 | #define M(n0,n1,n2,n3,n4,n5,n6,n70,n71,n72,n73,n74) \ | |
404 | (n0 | n1 << 1 | n2 << 2 | n3 << 3 | n4 << 4 | n5 << 5 | n6 << 6 \ | |
405 | | n70 << 7 | n71 << 8 | n72 << 9 | n73 << 10 | n74 << 11) | |
406 | ||
407 | switch (code) | |
408 | { | |
409 | case '*': | |
410 | mask = M (1,1,1,1,1,1,1,1,1,1,1,1); | |
252b5132 | 411 | break; |
47b0e7ad NC |
412 | case '~': |
413 | mask = M (0,0,1,1,1,1,1,1,1,0,0,0); | |
252b5132 | 414 | break; |
47b0e7ad NC |
415 | case '%': |
416 | mask = M (1,1,1,1,1,1,1,1,1,0,0,0); | |
252b5132 | 417 | break; |
47b0e7ad NC |
418 | case ';': |
419 | mask = M (1,0,1,1,1,1,1,1,1,1,1,1); | |
252b5132 | 420 | break; |
47b0e7ad NC |
421 | case '@': |
422 | mask = M (1,0,1,1,1,1,1,1,1,1,1,0); | |
252b5132 | 423 | break; |
47b0e7ad NC |
424 | case '!': |
425 | mask = M (0,0,1,0,0,1,1,1,1,1,1,0); | |
252b5132 | 426 | break; |
47b0e7ad NC |
427 | case '&': |
428 | mask = M (0,0,1,0,0,1,1,1,1,0,0,0); | |
252b5132 | 429 | break; |
47b0e7ad NC |
430 | case '$': |
431 | mask = M (1,0,1,1,1,1,1,1,1,0,0,0); | |
252b5132 | 432 | break; |
47b0e7ad NC |
433 | case '?': |
434 | mask = M (1,0,1,0,0,1,1,1,1,0,0,0); | |
9d29e1b3 | 435 | break; |
47b0e7ad NC |
436 | case '/': |
437 | mask = M (1,0,1,0,0,1,1,1,1,1,1,0); | |
3e602632 | 438 | break; |
47b0e7ad NC |
439 | case '|': |
440 | mask = M (0,0,1,0,0,1,1,1,1,1,1,0); | |
6b6e92f4 | 441 | break; |
47b0e7ad NC |
442 | case '>': |
443 | mask = M (0,0,1,0,1,1,1,1,1,0,0,0); | |
9d29e1b3 | 444 | break; |
47b0e7ad NC |
445 | case '<': |
446 | mask = M (0,0,1,1,0,1,1,1,1,1,1,0); | |
9d29e1b3 | 447 | break; |
47b0e7ad NC |
448 | case 'm': |
449 | mask = M (1,1,1,1,1,0,0,0,0,0,0,0); | |
fd99574b | 450 | break; |
47b0e7ad NC |
451 | case 'n': |
452 | mask = M (0,0,0,0,0,1,0,0,0,1,0,0); | |
453 | break; | |
454 | case 'o': | |
455 | mask = M (0,0,0,0,0,0,1,1,1,0,1,1); | |
456 | break; | |
457 | case 'p': | |
458 | mask = M (1,1,1,1,1,1,0,0,0,0,0,0); | |
459 | break; | |
460 | case 'q': | |
461 | mask = M (1,0,1,1,1,1,0,0,0,0,0,0); | |
462 | break; | |
463 | case 'v': | |
464 | mask = M (1,0,1,1,1,1,0,1,1,0,0,0); | |
465 | break; | |
466 | case 'b': | |
467 | mask = M (1,0,1,1,1,1,0,0,0,1,0,0); | |
468 | break; | |
469 | case 'w': | |
470 | mask = M (0,0,1,1,1,1,0,0,0,1,0,0); | |
471 | break; | |
472 | case 'y': | |
473 | mask = M (0,0,1,0,0,1,0,0,0,0,0,0); | |
474 | break; | |
475 | case 'z': | |
476 | mask = M (0,0,1,0,0,1,0,0,0,1,0,0); | |
477 | break; | |
478 | case '4': | |
479 | mask = M (0,0,1,1,1,1,0,0,0,0,0,0); | |
9d29e1b3 | 480 | break; |
47b0e7ad NC |
481 | default: |
482 | abort (); | |
252b5132 | 483 | } |
47b0e7ad | 484 | #undef M |
252b5132 | 485 | |
47b0e7ad NC |
486 | mode = (val >> 3) & 7; |
487 | if (mode == 7) | |
488 | mode += val & 7; | |
489 | return (mask & (1 << mode)) != 0; | |
490 | } | |
252b5132 | 491 | |
47b0e7ad NC |
492 | /* Print a base register REGNO and displacement DISP, on INFO->STREAM. |
493 | REGNO = -1 for pc, -2 for none (suppressed). */ | |
252b5132 | 494 | |
47b0e7ad NC |
495 | static void |
496 | print_base (int regno, bfd_vma disp, disassemble_info *info) | |
497 | { | |
498 | if (regno == -1) | |
499 | { | |
500 | (*info->fprintf_func) (info->stream, "%%pc@("); | |
501 | (*info->print_address_func) (disp, info); | |
502 | } | |
503 | else | |
504 | { | |
505 | char buf[50]; | |
252b5132 | 506 | |
47b0e7ad NC |
507 | if (regno == -2) |
508 | (*info->fprintf_func) (info->stream, "@("); | |
509 | else if (regno == -3) | |
510 | (*info->fprintf_func) (info->stream, "%%zpc@("); | |
511 | else | |
512 | (*info->fprintf_func) (info->stream, "%s@(", reg_names[regno]); | |
252b5132 | 513 | |
47b0e7ad NC |
514 | sprintf_vma (buf, disp); |
515 | (*info->fprintf_func) (info->stream, "%s", buf); | |
252b5132 | 516 | } |
252b5132 RH |
517 | } |
518 | ||
47b0e7ad NC |
519 | /* Print an indexed argument. The base register is BASEREG (-1 for pc). |
520 | P points to extension word, in buffer. | |
62443ade NC |
521 | ADDR is the nominal core address of that extension word. |
522 | Returns NULL upon error. */ | |
cc16ba8c | 523 | |
47b0e7ad NC |
524 | static unsigned char * |
525 | print_indexed (int basereg, | |
526 | unsigned char *p, | |
527 | bfd_vma addr, | |
528 | disassemble_info *info) | |
252b5132 | 529 | { |
47b0e7ad NC |
530 | int word; |
531 | static char *const scales[] = { "", ":2", ":4", ":8" }; | |
532 | bfd_vma base_disp; | |
533 | bfd_vma outer_disp; | |
534 | char buf[40]; | |
535 | char vmabuf[50]; | |
536 | ||
62443ade | 537 | NEXTWORD (p, word, NULL); |
47b0e7ad NC |
538 | |
539 | /* Generate the text for the index register. | |
540 | Where this will be output is not yet determined. */ | |
541 | sprintf (buf, "%s:%c%s", | |
542 | reg_names[(word >> 12) & 0xf], | |
543 | (word & 0x800) ? 'l' : 'w', | |
544 | scales[(word >> 9) & 3]); | |
545 | ||
546 | /* Handle the 68000 style of indexing. */ | |
547 | ||
548 | if ((word & 0x100) == 0) | |
549 | { | |
550 | base_disp = word & 0xff; | |
551 | if ((base_disp & 0x80) != 0) | |
552 | base_disp -= 0x100; | |
553 | if (basereg == -1) | |
554 | base_disp += addr; | |
555 | print_base (basereg, base_disp, info); | |
556 | (*info->fprintf_func) (info->stream, ",%s)", buf); | |
557 | return p; | |
558 | } | |
559 | ||
560 | /* Handle the generalized kind. */ | |
561 | /* First, compute the displacement to add to the base register. */ | |
562 | if (word & 0200) | |
563 | { | |
564 | if (basereg == -1) | |
565 | basereg = -3; | |
566 | else | |
567 | basereg = -2; | |
568 | } | |
569 | if (word & 0100) | |
570 | buf[0] = '\0'; | |
571 | base_disp = 0; | |
572 | switch ((word >> 4) & 3) | |
573 | { | |
574 | case 2: | |
62443ade | 575 | NEXTWORD (p, base_disp, NULL); |
47b0e7ad NC |
576 | break; |
577 | case 3: | |
62443ade | 578 | NEXTLONG (p, base_disp, NULL); |
47b0e7ad NC |
579 | } |
580 | if (basereg == -1) | |
581 | base_disp += addr; | |
582 | ||
583 | /* Handle single-level case (not indirect). */ | |
584 | if ((word & 7) == 0) | |
585 | { | |
586 | print_base (basereg, base_disp, info); | |
587 | if (buf[0] != '\0') | |
588 | (*info->fprintf_func) (info->stream, ",%s", buf); | |
589 | (*info->fprintf_func) (info->stream, ")"); | |
590 | return p; | |
591 | } | |
592 | ||
593 | /* Two level. Compute displacement to add after indirection. */ | |
594 | outer_disp = 0; | |
595 | switch (word & 3) | |
596 | { | |
597 | case 2: | |
62443ade | 598 | NEXTWORD (p, outer_disp, NULL); |
47b0e7ad NC |
599 | break; |
600 | case 3: | |
62443ade | 601 | NEXTLONG (p, outer_disp, NULL); |
47b0e7ad NC |
602 | } |
603 | ||
604 | print_base (basereg, base_disp, info); | |
605 | if ((word & 4) == 0 && buf[0] != '\0') | |
606 | { | |
607 | (*info->fprintf_func) (info->stream, ",%s", buf); | |
608 | buf[0] = '\0'; | |
609 | } | |
610 | sprintf_vma (vmabuf, outer_disp); | |
611 | (*info->fprintf_func) (info->stream, ")@(%s", vmabuf); | |
612 | if (buf[0] != '\0') | |
613 | (*info->fprintf_func) (info->stream, ",%s", buf); | |
614 | (*info->fprintf_func) (info->stream, ")"); | |
615 | ||
616 | return p; | |
617 | } | |
618 | ||
62443ade NC |
619 | #define FETCH_ARG(size, val) \ |
620 | do \ | |
621 | { \ | |
622 | val = fetch_arg (buffer, place, size, info); \ | |
623 | if (val < 0) \ | |
624 | return -3; \ | |
625 | } \ | |
626 | while (0) | |
627 | ||
47b0e7ad NC |
628 | /* Returns number of bytes "eaten" by the operand, or |
629 | return -1 if an invalid operand was found, or -2 if | |
62443ade | 630 | an opcode tabe error was found or -3 to simply abort. |
47b0e7ad NC |
631 | ADDR is the pc for this arg to be relative to. */ |
632 | ||
633 | static int | |
634 | print_insn_arg (const char *d, | |
635 | unsigned char *buffer, | |
636 | unsigned char *p0, | |
637 | bfd_vma addr, | |
638 | disassemble_info *info) | |
639 | { | |
640 | int val = 0; | |
641 | int place = d[1]; | |
642 | unsigned char *p = p0; | |
643 | int regno; | |
be8c092b NC |
644 | const char *regname; |
645 | unsigned char *p1; | |
252b5132 RH |
646 | double flval; |
647 | int flt_p; | |
648 | bfd_signed_vma disp; | |
649 | unsigned int uval; | |
650 | ||
651 | switch (*d) | |
652 | { | |
be8c092b | 653 | case 'c': /* Cache identifier. */ |
252b5132 RH |
654 | { |
655 | static char *const cacheFieldName[] = { "nc", "dc", "ic", "bc" }; | |
62443ade NC |
656 | FETCH_ARG (2, val); |
657 | (*info->fprintf_func) (info->stream, cacheFieldName[val]); | |
252b5132 RH |
658 | break; |
659 | } | |
660 | ||
be8c092b | 661 | case 'a': /* Address register indirect only. Cf. case '+'. */ |
252b5132 | 662 | { |
62443ade NC |
663 | FETCH_ARG (3, val); |
664 | (*info->fprintf_func) (info->stream, "%s@", reg_names[val + 8]); | |
252b5132 RH |
665 | break; |
666 | } | |
667 | ||
be8c092b | 668 | case '_': /* 32-bit absolute address for move16. */ |
252b5132 | 669 | { |
62443ade | 670 | NEXTULONG (p, uval); |
252b5132 RH |
671 | (*info->print_address_func) (uval, info); |
672 | break; | |
673 | } | |
674 | ||
675 | case 'C': | |
676 | (*info->fprintf_func) (info->stream, "%%ccr"); | |
677 | break; | |
678 | ||
679 | case 'S': | |
680 | (*info->fprintf_func) (info->stream, "%%sr"); | |
681 | break; | |
682 | ||
683 | case 'U': | |
684 | (*info->fprintf_func) (info->stream, "%%usp"); | |
685 | break; | |
686 | ||
461d5ddd ILT |
687 | case 'E': |
688 | (*info->fprintf_func) (info->stream, "%%acc"); | |
689 | break; | |
690 | ||
691 | case 'G': | |
692 | (*info->fprintf_func) (info->stream, "%%macsr"); | |
693 | break; | |
694 | ||
695 | case 'H': | |
696 | (*info->fprintf_func) (info->stream, "%%mask"); | |
697 | break; | |
698 | ||
252b5132 RH |
699 | case 'J': |
700 | { | |
3e602632 NC |
701 | /* FIXME: There's a problem here, different m68k processors call the |
702 | same address different names. This table can't get it right | |
703 | because it doesn't know which processor it's disassembling for. */ | |
252b5132 RH |
704 | static const struct { char *name; int value; } names[] |
705 | = {{"%sfc", 0x000}, {"%dfc", 0x001}, {"%cacr", 0x002}, | |
706 | {"%tc", 0x003}, {"%itt0",0x004}, {"%itt1", 0x005}, | |
707 | {"%dtt0",0x006}, {"%dtt1",0x007}, {"%buscr",0x008}, | |
708 | {"%usp", 0x800}, {"%vbr", 0x801}, {"%caar", 0x802}, | |
709 | {"%msp", 0x803}, {"%isp", 0x804}, | |
78336706 NS |
710 | /* reg c04 is sometimes called flashbar or rambar. |
711 | rec c05 is also sometimes called rambar. */ | |
712 | {"%rambar0", 0xc04}, {"%rambar1", 0xc05}, | |
252b5132 RH |
713 | |
714 | /* Should we be calling this psr like we do in case 'Y'? */ | |
715 | {"%mmusr",0x805}, | |
716 | ||
f7ec513b KH |
717 | {"%urp", 0x806}, {"%srp", 0x807}, {"%pcr", 0x808}, |
718 | ||
719 | /* Fido added these. */ | |
d0fa1372 | 720 | {"%cac", 0xffe}, {"%mbo", 0xfff}}; |
252b5132 | 721 | |
62443ade | 722 | FETCH_ARG (12, val); |
252b5132 RH |
723 | for (regno = sizeof names / sizeof names[0] - 1; regno >= 0; regno--) |
724 | if (names[regno].value == val) | |
725 | { | |
726 | (*info->fprintf_func) (info->stream, "%s", names[regno].name); | |
727 | break; | |
728 | } | |
729 | if (regno < 0) | |
730 | (*info->fprintf_func) (info->stream, "%d", val); | |
731 | } | |
732 | break; | |
733 | ||
734 | case 'Q': | |
62443ade | 735 | FETCH_ARG (3, val); |
252b5132 RH |
736 | /* 0 means 8, except for the bkpt instruction... */ |
737 | if (val == 0 && d[1] != 's') | |
738 | val = 8; | |
739 | (*info->fprintf_func) (info->stream, "#%d", val); | |
740 | break; | |
741 | ||
3e602632 | 742 | case 'x': |
62443ade | 743 | FETCH_ARG (3, val); |
3e602632 NC |
744 | /* 0 means -1. */ |
745 | if (val == 0) | |
746 | val = -1; | |
747 | (*info->fprintf_func) (info->stream, "#%d", val); | |
748 | break; | |
749 | ||
afa2158f | 750 | case 'j': |
62443ade | 751 | FETCH_ARG (3, val); |
afa2158f NS |
752 | (*info->fprintf_func) (info->stream, "#%d", val+1); |
753 | break; | |
754 | ||
755 | case 'K': | |
62443ade | 756 | FETCH_ARG (9, val); |
afa2158f NS |
757 | (*info->fprintf_func) (info->stream, "#%d", val); |
758 | break; | |
759 | ||
252b5132 | 760 | case 'M': |
461d5ddd ILT |
761 | if (place == 'h') |
762 | { | |
763 | static char *const scalefactor_name[] = { "<<", ">>" }; | |
62443ade NC |
764 | |
765 | FETCH_ARG (1, val); | |
461d5ddd ILT |
766 | (*info->fprintf_func) (info->stream, scalefactor_name[val]); |
767 | } | |
768 | else | |
769 | { | |
62443ade | 770 | FETCH_ARG (8, val); |
461d5ddd ILT |
771 | if (val & 0x80) |
772 | val = val - 0x100; | |
773 | (*info->fprintf_func) (info->stream, "#%d", val); | |
774 | } | |
252b5132 RH |
775 | break; |
776 | ||
777 | case 'T': | |
62443ade | 778 | FETCH_ARG (4, val); |
252b5132 RH |
779 | (*info->fprintf_func) (info->stream, "#%d", val); |
780 | break; | |
781 | ||
782 | case 'D': | |
62443ade NC |
783 | FETCH_ARG (3, val); |
784 | (*info->fprintf_func) (info->stream, "%s", reg_names[val]); | |
252b5132 RH |
785 | break; |
786 | ||
787 | case 'A': | |
62443ade NC |
788 | FETCH_ARG (3, val); |
789 | (*info->fprintf_func) (info->stream, "%s", reg_names[val + 010]); | |
252b5132 RH |
790 | break; |
791 | ||
792 | case 'R': | |
62443ade NC |
793 | FETCH_ARG (4, val); |
794 | (*info->fprintf_func) (info->stream, "%s", reg_names[val]); | |
252b5132 RH |
795 | break; |
796 | ||
797 | case 'r': | |
62443ade | 798 | FETCH_ARG (4, regno); |
252b5132 RH |
799 | if (regno > 7) |
800 | (*info->fprintf_func) (info->stream, "%s@", reg_names[regno]); | |
801 | else | |
802 | (*info->fprintf_func) (info->stream, "@(%s)", reg_names[regno]); | |
803 | break; | |
804 | ||
805 | case 'F': | |
62443ade NC |
806 | FETCH_ARG (3, val); |
807 | (*info->fprintf_func) (info->stream, "%%fp%d", val); | |
252b5132 RH |
808 | break; |
809 | ||
810 | case 'O': | |
62443ade | 811 | FETCH_ARG (6, val); |
252b5132 | 812 | if (val & 0x20) |
ec22bdda | 813 | (*info->fprintf_func) (info->stream, "%s", reg_names[val & 7]); |
252b5132 RH |
814 | else |
815 | (*info->fprintf_func) (info->stream, "%d", val); | |
816 | break; | |
817 | ||
818 | case '+': | |
62443ade NC |
819 | FETCH_ARG (3, val); |
820 | (*info->fprintf_func) (info->stream, "%s@+", reg_names[val + 8]); | |
252b5132 RH |
821 | break; |
822 | ||
823 | case '-': | |
62443ade NC |
824 | FETCH_ARG (3, val); |
825 | (*info->fprintf_func) (info->stream, "%s@-", reg_names[val + 8]); | |
252b5132 RH |
826 | break; |
827 | ||
828 | case 'k': | |
829 | if (place == 'k') | |
62443ade NC |
830 | { |
831 | FETCH_ARG (3, val); | |
832 | (*info->fprintf_func) (info->stream, "{%s}", reg_names[val]); | |
833 | } | |
252b5132 RH |
834 | else if (place == 'C') |
835 | { | |
62443ade | 836 | FETCH_ARG (7, val); |
47b0e7ad | 837 | if (val > 63) /* This is a signed constant. */ |
252b5132 RH |
838 | val -= 128; |
839 | (*info->fprintf_func) (info->stream, "{#%d}", val); | |
840 | } | |
841 | else | |
62443ade | 842 | return -1; |
252b5132 RH |
843 | break; |
844 | ||
845 | case '#': | |
846 | case '^': | |
847 | p1 = buffer + (*d == '#' ? 2 : 4); | |
848 | if (place == 's') | |
62443ade | 849 | FETCH_ARG (4, val); |
252b5132 | 850 | else if (place == 'C') |
62443ade | 851 | FETCH_ARG (7, val); |
252b5132 | 852 | else if (place == '8') |
62443ade | 853 | FETCH_ARG (3, val); |
252b5132 | 854 | else if (place == '3') |
62443ade | 855 | FETCH_ARG (8, val); |
252b5132 | 856 | else if (place == 'b') |
62443ade | 857 | NEXTBYTE (p1, val); |
252b5132 | 858 | else if (place == 'w' || place == 'W') |
62443ade | 859 | NEXTWORD (p1, val, -3); |
252b5132 | 860 | else if (place == 'l') |
62443ade | 861 | NEXTLONG (p1, val, -3); |
252b5132 RH |
862 | else |
863 | return -2; | |
62443ade | 864 | |
252b5132 RH |
865 | (*info->fprintf_func) (info->stream, "#%d", val); |
866 | break; | |
867 | ||
868 | case 'B': | |
869 | if (place == 'b') | |
62443ade | 870 | NEXTBYTE (p, disp); |
252b5132 | 871 | else if (place == 'B') |
ec22bdda | 872 | disp = COERCE_SIGNED_CHAR (buffer[1]); |
252b5132 | 873 | else if (place == 'w' || place == 'W') |
62443ade | 874 | NEXTWORD (p, disp, -3); |
252b5132 | 875 | else if (place == 'l' || place == 'L' || place == 'C') |
62443ade | 876 | NEXTLONG (p, disp, -3); |
252b5132 RH |
877 | else if (place == 'g') |
878 | { | |
62443ade | 879 | NEXTBYTE (buffer, disp); |
252b5132 | 880 | if (disp == 0) |
62443ade | 881 | NEXTWORD (p, disp, -3); |
252b5132 | 882 | else if (disp == -1) |
62443ade | 883 | NEXTLONG (p, disp, -3); |
252b5132 RH |
884 | } |
885 | else if (place == 'c') | |
886 | { | |
47b0e7ad | 887 | if (buffer[1] & 0x40) /* If bit six is one, long offset. */ |
62443ade | 888 | NEXTLONG (p, disp, -3); |
252b5132 | 889 | else |
62443ade | 890 | NEXTWORD (p, disp, -3); |
252b5132 RH |
891 | } |
892 | else | |
893 | return -2; | |
894 | ||
895 | (*info->print_address_func) (addr + disp, info); | |
896 | break; | |
897 | ||
898 | case 'd': | |
62443ade NC |
899 | { |
900 | int val1; | |
901 | ||
902 | NEXTWORD (p, val, -3); | |
903 | FETCH_ARG (3, val1); | |
904 | (*info->fprintf_func) (info->stream, "%s@(%d)", reg_names[val1 + 8], val); | |
905 | break; | |
906 | } | |
252b5132 RH |
907 | |
908 | case 's': | |
62443ade NC |
909 | FETCH_ARG (3, val); |
910 | (*info->fprintf_func) (info->stream, "%s", fpcr_names[val]); | |
252b5132 RH |
911 | break; |
912 | ||
fd99574b | 913 | case 'e': |
62443ade | 914 | FETCH_ARG (2, val); |
fd99574b NC |
915 | (*info->fprintf_func) (info->stream, "%%acc%d", val); |
916 | break; | |
917 | ||
918 | case 'g': | |
62443ade NC |
919 | FETCH_ARG (1, val); |
920 | (*info->fprintf_func) (info->stream, "%%accext%s", val == 0 ? "01" : "23"); | |
fd99574b | 921 | break; |
47b0e7ad | 922 | |
fd99574b | 923 | case 'i': |
62443ade | 924 | FETCH_ARG (2, val); |
fd99574b NC |
925 | if (val == 1) |
926 | (*info->fprintf_func) (info->stream, "<<"); | |
927 | else if (val == 3) | |
928 | (*info->fprintf_func) (info->stream, ">>"); | |
be8c092b NC |
929 | else |
930 | return -1; | |
fd99574b NC |
931 | break; |
932 | ||
252b5132 RH |
933 | case 'I': |
934 | /* Get coprocessor ID... */ | |
935 | val = fetch_arg (buffer, 'd', 3, info); | |
62443ade NC |
936 | if (val < 0) |
937 | return -3; | |
47b0e7ad | 938 | if (val != 1) /* Unusual coprocessor ID? */ |
252b5132 RH |
939 | (*info->fprintf_func) (info->stream, "(cpid=%d) ", val); |
940 | break; | |
941 | ||
fd99574b | 942 | case '4': |
252b5132 RH |
943 | case '*': |
944 | case '~': | |
945 | case '%': | |
946 | case ';': | |
947 | case '@': | |
948 | case '!': | |
949 | case '$': | |
950 | case '?': | |
951 | case '/': | |
952 | case '&': | |
953 | case '|': | |
954 | case '<': | |
955 | case '>': | |
956 | case 'm': | |
957 | case 'n': | |
958 | case 'o': | |
959 | case 'p': | |
960 | case 'q': | |
961 | case 'v': | |
3e602632 NC |
962 | case 'b': |
963 | case 'w': | |
964 | case 'y': | |
965 | case 'z': | |
252b5132 RH |
966 | if (place == 'd') |
967 | { | |
968 | val = fetch_arg (buffer, 'x', 6, info); | |
62443ade NC |
969 | if (val < 0) |
970 | return -3; | |
252b5132 RH |
971 | val = ((val & 7) << 3) + ((val >> 3) & 7); |
972 | } | |
973 | else | |
62443ade NC |
974 | { |
975 | val = fetch_arg (buffer, 's', 6, info); | |
976 | if (val < 0) | |
977 | return -3; | |
978 | } | |
252b5132 | 979 | |
be8c092b | 980 | /* If the <ea> is invalid for *d, then reject this match. */ |
8577e690 | 981 | if (!m68k_valid_ea (*d, val)) |
be8c092b NC |
982 | return -1; |
983 | ||
252b5132 RH |
984 | /* Get register number assuming address register. */ |
985 | regno = (val & 7) + 8; | |
986 | regname = reg_names[regno]; | |
987 | switch (val >> 3) | |
988 | { | |
989 | case 0: | |
990 | (*info->fprintf_func) (info->stream, "%s", reg_names[val]); | |
991 | break; | |
992 | ||
993 | case 1: | |
994 | (*info->fprintf_func) (info->stream, "%s", regname); | |
995 | break; | |
996 | ||
997 | case 2: | |
998 | (*info->fprintf_func) (info->stream, "%s@", regname); | |
999 | break; | |
1000 | ||
1001 | case 3: | |
1002 | (*info->fprintf_func) (info->stream, "%s@+", regname); | |
1003 | break; | |
1004 | ||
1005 | case 4: | |
1006 | (*info->fprintf_func) (info->stream, "%s@-", regname); | |
1007 | break; | |
1008 | ||
1009 | case 5: | |
62443ade | 1010 | NEXTWORD (p, val, -3); |
252b5132 RH |
1011 | (*info->fprintf_func) (info->stream, "%s@(%d)", regname, val); |
1012 | break; | |
1013 | ||
1014 | case 6: | |
1015 | p = print_indexed (regno, p, addr, info); | |
62443ade NC |
1016 | if (p == NULL) |
1017 | return -3; | |
252b5132 RH |
1018 | break; |
1019 | ||
1020 | case 7: | |
1021 | switch (val & 7) | |
1022 | { | |
1023 | case 0: | |
62443ade | 1024 | NEXTWORD (p, val, -3); |
252b5132 RH |
1025 | (*info->print_address_func) (val, info); |
1026 | break; | |
1027 | ||
1028 | case 1: | |
62443ade | 1029 | NEXTULONG (p, uval); |
252b5132 RH |
1030 | (*info->print_address_func) (uval, info); |
1031 | break; | |
1032 | ||
1033 | case 2: | |
62443ade | 1034 | NEXTWORD (p, val, -3); |
252b5132 RH |
1035 | (*info->fprintf_func) (info->stream, "%%pc@("); |
1036 | (*info->print_address_func) (addr + val, info); | |
1037 | (*info->fprintf_func) (info->stream, ")"); | |
1038 | break; | |
1039 | ||
1040 | case 3: | |
1041 | p = print_indexed (-1, p, addr, info); | |
62443ade NC |
1042 | if (p == NULL) |
1043 | return -3; | |
252b5132 RH |
1044 | break; |
1045 | ||
1046 | case 4: | |
1047 | flt_p = 1; /* Assume it's a float... */ | |
ec22bdda | 1048 | switch (place) |
252b5132 RH |
1049 | { |
1050 | case 'b': | |
62443ade | 1051 | NEXTBYTE (p, val); |
252b5132 RH |
1052 | flt_p = 0; |
1053 | break; | |
1054 | ||
1055 | case 'w': | |
62443ade | 1056 | NEXTWORD (p, val, -3); |
252b5132 RH |
1057 | flt_p = 0; |
1058 | break; | |
1059 | ||
1060 | case 'l': | |
62443ade | 1061 | NEXTLONG (p, val, -3); |
252b5132 RH |
1062 | flt_p = 0; |
1063 | break; | |
1064 | ||
1065 | case 'f': | |
ec22bdda | 1066 | NEXTSINGLE (flval, p); |
252b5132 RH |
1067 | break; |
1068 | ||
1069 | case 'F': | |
ec22bdda | 1070 | NEXTDOUBLE (flval, p); |
252b5132 RH |
1071 | break; |
1072 | ||
1073 | case 'x': | |
ec22bdda | 1074 | NEXTEXTEND (flval, p); |
252b5132 RH |
1075 | break; |
1076 | ||
1077 | case 'p': | |
62443ade | 1078 | NEXTPACKED (p, flval); |
252b5132 RH |
1079 | break; |
1080 | ||
1081 | default: | |
1082 | return -1; | |
1083 | } | |
ec22bdda | 1084 | if (flt_p) /* Print a float? */ |
252b5132 RH |
1085 | (*info->fprintf_func) (info->stream, "#%g", flval); |
1086 | else | |
1087 | (*info->fprintf_func) (info->stream, "#%d", val); | |
1088 | break; | |
1089 | ||
1090 | default: | |
1091 | return -1; | |
1092 | } | |
1093 | } | |
fd99574b NC |
1094 | |
1095 | /* If place is '/', then this is the case of the mask bit for | |
1096 | mac/emac loads. Now that the arg has been printed, grab the | |
1097 | mask bit and if set, add a '&' to the arg. */ | |
1098 | if (place == '/') | |
1099 | { | |
62443ade | 1100 | FETCH_ARG (1, val); |
fd99574b | 1101 | if (val) |
be8c092b | 1102 | info->fprintf_func (info->stream, "&"); |
fd99574b | 1103 | } |
252b5132 RH |
1104 | break; |
1105 | ||
1106 | case 'L': | |
1107 | case 'l': | |
1108 | if (place == 'w') | |
1109 | { | |
1110 | char doneany; | |
1111 | p1 = buffer + 2; | |
62443ade | 1112 | NEXTWORD (p1, val, -3); |
252b5132 RH |
1113 | /* Move the pointer ahead if this point is farther ahead |
1114 | than the last. */ | |
1115 | p = p1 > p ? p1 : p; | |
1116 | if (val == 0) | |
1117 | { | |
1118 | (*info->fprintf_func) (info->stream, "#0"); | |
1119 | break; | |
1120 | } | |
1121 | if (*d == 'l') | |
1122 | { | |
47b0e7ad NC |
1123 | int newval = 0; |
1124 | ||
252b5132 RH |
1125 | for (regno = 0; regno < 16; ++regno) |
1126 | if (val & (0x8000 >> regno)) | |
1127 | newval |= 1 << regno; | |
1128 | val = newval; | |
1129 | } | |
1130 | val &= 0xffff; | |
1131 | doneany = 0; | |
1132 | for (regno = 0; regno < 16; ++regno) | |
1133 | if (val & (1 << regno)) | |
1134 | { | |
1135 | int first_regno; | |
47b0e7ad | 1136 | |
252b5132 RH |
1137 | if (doneany) |
1138 | (*info->fprintf_func) (info->stream, "/"); | |
1139 | doneany = 1; | |
1140 | (*info->fprintf_func) (info->stream, "%s", reg_names[regno]); | |
1141 | first_regno = regno; | |
1142 | while (val & (1 << (regno + 1))) | |
1143 | ++regno; | |
1144 | if (regno > first_regno) | |
1145 | (*info->fprintf_func) (info->stream, "-%s", | |
1146 | reg_names[regno]); | |
1147 | } | |
1148 | } | |
1149 | else if (place == '3') | |
1150 | { | |
1151 | /* `fmovem' insn. */ | |
1152 | char doneany; | |
62443ade NC |
1153 | |
1154 | FETCH_ARG (8, val); | |
252b5132 RH |
1155 | if (val == 0) |
1156 | { | |
1157 | (*info->fprintf_func) (info->stream, "#0"); | |
1158 | break; | |
1159 | } | |
1160 | if (*d == 'l') | |
1161 | { | |
47b0e7ad NC |
1162 | int newval = 0; |
1163 | ||
252b5132 RH |
1164 | for (regno = 0; regno < 8; ++regno) |
1165 | if (val & (0x80 >> regno)) | |
1166 | newval |= 1 << regno; | |
1167 | val = newval; | |
1168 | } | |
1169 | val &= 0xff; | |
1170 | doneany = 0; | |
1171 | for (regno = 0; regno < 8; ++regno) | |
1172 | if (val & (1 << regno)) | |
1173 | { | |
1174 | int first_regno; | |
1175 | if (doneany) | |
1176 | (*info->fprintf_func) (info->stream, "/"); | |
1177 | doneany = 1; | |
1178 | (*info->fprintf_func) (info->stream, "%%fp%d", regno); | |
1179 | first_regno = regno; | |
1180 | while (val & (1 << (regno + 1))) | |
1181 | ++regno; | |
1182 | if (regno > first_regno) | |
1183 | (*info->fprintf_func) (info->stream, "-%%fp%d", regno); | |
1184 | } | |
1185 | } | |
1186 | else if (place == '8') | |
1187 | { | |
62443ade | 1188 | FETCH_ARG (3, val); |
47b0e7ad | 1189 | /* fmoveml for FP status registers. */ |
62443ade | 1190 | (*info->fprintf_func) (info->stream, "%s", fpcr_names[val]); |
252b5132 RH |
1191 | } |
1192 | else | |
1193 | return -2; | |
1194 | break; | |
1195 | ||
1196 | case 'X': | |
1197 | place = '8'; | |
1198 | case 'Y': | |
1199 | case 'Z': | |
1200 | case 'W': | |
1201 | case '0': | |
1202 | case '1': | |
1203 | case '2': | |
1204 | case '3': | |
1205 | { | |
62443ade | 1206 | int val; |
252b5132 | 1207 | char *name = 0; |
47b0e7ad | 1208 | |
62443ade | 1209 | FETCH_ARG (5, val); |
252b5132 RH |
1210 | switch (val) |
1211 | { | |
1212 | case 2: name = "%tt0"; break; | |
1213 | case 3: name = "%tt1"; break; | |
1214 | case 0x10: name = "%tc"; break; | |
1215 | case 0x11: name = "%drp"; break; | |
1216 | case 0x12: name = "%srp"; break; | |
1217 | case 0x13: name = "%crp"; break; | |
1218 | case 0x14: name = "%cal"; break; | |
1219 | case 0x15: name = "%val"; break; | |
1220 | case 0x16: name = "%scc"; break; | |
1221 | case 0x17: name = "%ac"; break; | |
1222 | case 0x18: name = "%psr"; break; | |
1223 | case 0x19: name = "%pcsr"; break; | |
1224 | case 0x1c: | |
1225 | case 0x1d: | |
1226 | { | |
1227 | int break_reg = ((buffer[3] >> 2) & 7); | |
47b0e7ad | 1228 | |
252b5132 RH |
1229 | (*info->fprintf_func) |
1230 | (info->stream, val == 0x1c ? "%%bad%d" : "%%bac%d", | |
1231 | break_reg); | |
1232 | } | |
1233 | break; | |
1234 | default: | |
1235 | (*info->fprintf_func) (info->stream, "<mmu register %d>", val); | |
1236 | } | |
1237 | if (name) | |
1238 | (*info->fprintf_func) (info->stream, "%s", name); | |
1239 | } | |
1240 | break; | |
1241 | ||
1242 | case 'f': | |
1243 | { | |
62443ade | 1244 | int fc; |
47b0e7ad | 1245 | |
62443ade | 1246 | FETCH_ARG (5, fc); |
252b5132 RH |
1247 | if (fc == 1) |
1248 | (*info->fprintf_func) (info->stream, "%%dfc"); | |
1249 | else if (fc == 0) | |
1250 | (*info->fprintf_func) (info->stream, "%%sfc"); | |
1251 | else | |
1252 | /* xgettext:c-format */ | |
1253 | (*info->fprintf_func) (info->stream, _("<function code %d>"), fc); | |
1254 | } | |
1255 | break; | |
1256 | ||
1257 | case 'V': | |
1258 | (*info->fprintf_func) (info->stream, "%%val"); | |
1259 | break; | |
1260 | ||
1261 | case 't': | |
1262 | { | |
62443ade | 1263 | int level; |
47b0e7ad | 1264 | |
62443ade | 1265 | FETCH_ARG (3, level); |
252b5132 RH |
1266 | (*info->fprintf_func) (info->stream, "%d", level); |
1267 | } | |
1268 | break; | |
1269 | ||
461d5ddd ILT |
1270 | case 'u': |
1271 | { | |
1272 | short is_upper = 0; | |
62443ade | 1273 | int reg; |
3e602632 | 1274 | |
62443ade | 1275 | FETCH_ARG (5, reg); |
461d5ddd ILT |
1276 | if (reg & 0x10) |
1277 | { | |
1278 | is_upper = 1; | |
1279 | reg &= 0xf; | |
1280 | } | |
1281 | (*info->fprintf_func) (info->stream, "%s%s", | |
be8c092b | 1282 | reg_half_names[reg], |
461d5ddd ILT |
1283 | is_upper ? "u" : "l"); |
1284 | } | |
1285 | break; | |
3e602632 | 1286 | |
252b5132 RH |
1287 | default: |
1288 | return -2; | |
1289 | } | |
1290 | ||
1291 | return p - p0; | |
1292 | } | |
1293 | ||
47b0e7ad NC |
1294 | /* Try to match the current instruction to best and if so, return the |
1295 | number of bytes consumed from the instruction stream, else zero. */ | |
252b5132 RH |
1296 | |
1297 | static int | |
47b0e7ad NC |
1298 | match_insn_m68k (bfd_vma memaddr, |
1299 | disassemble_info * info, | |
a596001e | 1300 | const struct m68k_opcode * best) |
252b5132 | 1301 | { |
47b0e7ad NC |
1302 | unsigned char *save_p; |
1303 | unsigned char *p; | |
1304 | const char *d; | |
afa2158f | 1305 | const char *args = best->args; |
be8c092b | 1306 | |
a596001e | 1307 | struct private *priv = (struct private *) info->private_data; |
47b0e7ad NC |
1308 | bfd_byte *buffer = priv->the_buffer; |
1309 | fprintf_ftype save_printer = info->fprintf_func; | |
1310 | void (* save_print_address) (bfd_vma, struct disassemble_info *) | |
1311 | = info->print_address_func; | |
fd99574b | 1312 | |
afa2158f NS |
1313 | if (*args == '.') |
1314 | args++; | |
1315 | ||
47b0e7ad NC |
1316 | /* Point at first word of argument data, |
1317 | and at descriptor for first argument. */ | |
1318 | p = buffer + 2; | |
fd99574b | 1319 | |
47b0e7ad NC |
1320 | /* Figure out how long the fixed-size portion of the instruction is. |
1321 | The only place this is stored in the opcode table is | |
1322 | in the arguments--look for arguments which specify fields in the 2nd | |
1323 | or 3rd words of the instruction. */ | |
afa2158f | 1324 | for (d = args; *d; d += 2) |
47b0e7ad NC |
1325 | { |
1326 | /* I don't think it is necessary to be checking d[0] here; | |
1327 | I suspect all this could be moved to the case statement below. */ | |
1328 | if (d[0] == '#') | |
1329 | { | |
1330 | if (d[1] == 'l' && p - buffer < 6) | |
1331 | p = buffer + 6; | |
1332 | else if (p - buffer < 4 && d[1] != 'C' && d[1] != '8') | |
1333 | p = buffer + 4; | |
1334 | } | |
fd99574b | 1335 | |
47b0e7ad NC |
1336 | if ((d[0] == 'L' || d[0] == 'l') && d[1] == 'w' && p - buffer < 4) |
1337 | p = buffer + 4; | |
fd99574b | 1338 | |
47b0e7ad NC |
1339 | switch (d[1]) |
1340 | { | |
1341 | case '1': | |
1342 | case '2': | |
1343 | case '3': | |
1344 | case '7': | |
1345 | case '8': | |
1346 | case '9': | |
1347 | case 'i': | |
1348 | if (p - buffer < 4) | |
1349 | p = buffer + 4; | |
1350 | break; | |
1351 | case '4': | |
1352 | case '5': | |
1353 | case '6': | |
1354 | if (p - buffer < 6) | |
1355 | p = buffer + 6; | |
1356 | break; | |
1357 | default: | |
1358 | break; | |
1359 | } | |
1360 | } | |
252b5132 | 1361 | |
47b0e7ad NC |
1362 | /* pflusha is an exceptions. It takes no arguments but is two words |
1363 | long. Recognize it by looking at the lower 16 bits of the mask. */ | |
1364 | if (p - buffer < 4 && (best->match & 0xFFFF) != 0) | |
1365 | p = buffer + 4; | |
252b5132 | 1366 | |
47b0e7ad NC |
1367 | /* lpstop is another exception. It takes a one word argument but is |
1368 | three words long. */ | |
1369 | if (p - buffer < 6 | |
1370 | && (best->match & 0xffff) == 0xffff | |
afa2158f NS |
1371 | && args[0] == '#' |
1372 | && args[1] == 'w') | |
47b0e7ad NC |
1373 | { |
1374 | /* Copy the one word argument into the usual location for a one | |
1375 | word argument, to simplify printing it. We can get away with | |
1376 | this because we know exactly what the second word is, and we | |
1377 | aren't going to print anything based on it. */ | |
1378 | p = buffer + 6; | |
1379 | FETCH_DATA (info, p); | |
1380 | buffer[2] = buffer[4]; | |
1381 | buffer[3] = buffer[5]; | |
1382 | } | |
252b5132 | 1383 | |
47b0e7ad | 1384 | FETCH_DATA (info, p); |
3e602632 | 1385 | |
47b0e7ad NC |
1386 | save_p = p; |
1387 | info->print_address_func = dummy_print_address; | |
1388 | info->fprintf_func = (fprintf_ftype) dummy_printer; | |
252b5132 | 1389 | |
47b0e7ad NC |
1390 | /* We scan the operands twice. The first time we don't print anything, |
1391 | but look for errors. */ | |
afa2158f | 1392 | for (d = args; *d; d += 2) |
47b0e7ad NC |
1393 | { |
1394 | int eaten = print_insn_arg (d, buffer, p, memaddr + (p - buffer), info); | |
252b5132 | 1395 | |
47b0e7ad NC |
1396 | if (eaten >= 0) |
1397 | p += eaten; | |
9f7678f6 | 1398 | else if (eaten == -1 || eaten == -3) |
47b0e7ad NC |
1399 | { |
1400 | info->fprintf_func = save_printer; | |
1401 | info->print_address_func = save_print_address; | |
1402 | return 0; | |
1403 | } | |
1404 | else | |
1405 | { | |
f095b97b JW |
1406 | /* We must restore the print functions before trying to print the |
1407 | error message. */ | |
1408 | info->fprintf_func = save_printer; | |
1409 | info->print_address_func = save_print_address; | |
47b0e7ad NC |
1410 | info->fprintf_func (info->stream, |
1411 | /* xgettext:c-format */ | |
1412 | _("<internal error in opcode table: %s %s>\n"), | |
62443ade | 1413 | best->name, best->args); |
47b0e7ad NC |
1414 | return 2; |
1415 | } | |
1416 | } | |
461d5ddd | 1417 | |
47b0e7ad NC |
1418 | p = save_p; |
1419 | info->fprintf_func = save_printer; | |
1420 | info->print_address_func = save_print_address; | |
461d5ddd | 1421 | |
afa2158f | 1422 | d = args; |
461d5ddd | 1423 | |
47b0e7ad | 1424 | info->fprintf_func (info->stream, "%s", best->name); |
461d5ddd | 1425 | |
47b0e7ad NC |
1426 | if (*d) |
1427 | info->fprintf_func (info->stream, " "); | |
461d5ddd | 1428 | |
47b0e7ad NC |
1429 | while (*d) |
1430 | { | |
1431 | p += print_insn_arg (d, buffer, p, memaddr + (p - buffer), info); | |
1432 | d += 2; | |
461d5ddd | 1433 | |
47b0e7ad NC |
1434 | if (*d && *(d - 2) != 'I' && *d != 'k') |
1435 | info->fprintf_func (info->stream, ","); | |
252b5132 RH |
1436 | } |
1437 | ||
47b0e7ad | 1438 | return p - buffer; |
252b5132 RH |
1439 | } |
1440 | ||
a596001e RS |
1441 | /* Try to interpret the instruction at address MEMADDR as one that |
1442 | can execute on a processor with the features given by ARCH_MASK. | |
1443 | If successful, print the instruction to INFO->STREAM and return | |
1444 | its length in bytes. Return 0 otherwise. */ | |
252b5132 | 1445 | |
a596001e RS |
1446 | static int |
1447 | m68k_scan_mask (bfd_vma memaddr, disassemble_info *info, | |
1448 | unsigned int arch_mask) | |
252b5132 | 1449 | { |
47b0e7ad NC |
1450 | int i; |
1451 | const char *d; | |
47b0e7ad | 1452 | static const struct m68k_opcode **opcodes[16]; |
a596001e | 1453 | static int numopcodes[16]; |
47b0e7ad | 1454 | int val; |
a596001e RS |
1455 | int major_opcode; |
1456 | ||
1457 | struct private *priv = (struct private *) info->private_data; | |
1458 | bfd_byte *buffer = priv->the_buffer; | |
252b5132 | 1459 | |
47b0e7ad | 1460 | if (!opcodes[0]) |
252b5132 | 1461 | { |
47b0e7ad NC |
1462 | /* Speed up the matching by sorting the opcode |
1463 | table on the upper four bits of the opcode. */ | |
1464 | const struct m68k_opcode **opc_pointer[16]; | |
252b5132 | 1465 | |
47b0e7ad NC |
1466 | /* First count how many opcodes are in each of the sixteen buckets. */ |
1467 | for (i = 0; i < m68k_numopcodes; i++) | |
1468 | numopcodes[(m68k_opcodes[i].opcode >> 28) & 15]++; | |
252b5132 | 1469 | |
47b0e7ad NC |
1470 | /* Then create a sorted table of pointers |
1471 | that point into the unsorted table. */ | |
1472 | opc_pointer[0] = xmalloc (sizeof (struct m68k_opcode *) | |
1473 | * m68k_numopcodes); | |
1474 | opcodes[0] = opc_pointer[0]; | |
252b5132 | 1475 | |
47b0e7ad NC |
1476 | for (i = 1; i < 16; i++) |
1477 | { | |
1478 | opc_pointer[i] = opc_pointer[i - 1] + numopcodes[i - 1]; | |
1479 | opcodes[i] = opc_pointer[i]; | |
1480 | } | |
252b5132 | 1481 | |
47b0e7ad NC |
1482 | for (i = 0; i < m68k_numopcodes; i++) |
1483 | *opc_pointer[(m68k_opcodes[i].opcode >> 28) & 15]++ = &m68k_opcodes[i]; | |
252b5132 RH |
1484 | } |
1485 | ||
47b0e7ad NC |
1486 | FETCH_DATA (info, buffer + 2); |
1487 | major_opcode = (buffer[0] >> 4) & 15; | |
252b5132 | 1488 | |
47b0e7ad NC |
1489 | for (i = 0; i < numopcodes[major_opcode]; i++) |
1490 | { | |
1491 | const struct m68k_opcode *opc = opcodes[major_opcode][i]; | |
1492 | unsigned long opcode = opc->opcode; | |
1493 | unsigned long match = opc->match; | |
afa2158f NS |
1494 | const char *args = opc->args; |
1495 | ||
1496 | if (*args == '.') | |
1497 | args++; | |
252b5132 | 1498 | |
47b0e7ad NC |
1499 | if (((0xff & buffer[0] & (match >> 24)) == (0xff & (opcode >> 24))) |
1500 | && ((0xff & buffer[1] & (match >> 16)) == (0xff & (opcode >> 16))) | |
1501 | /* Only fetch the next two bytes if we need to. */ | |
1502 | && (((0xffff & match) == 0) | |
1503 | || | |
1504 | (FETCH_DATA (info, buffer + 4) | |
1505 | && ((0xff & buffer[2] & (match >> 8)) == (0xff & (opcode >> 8))) | |
1506 | && ((0xff & buffer[3] & match) == (0xff & opcode))) | |
1507 | ) | |
1508 | && (opc->arch & arch_mask) != 0) | |
1509 | { | |
1510 | /* Don't use for printout the variants of divul and divsl | |
1511 | that have the same register number in two places. | |
1512 | The more general variants will match instead. */ | |
afa2158f | 1513 | for (d = args; *d; d += 2) |
47b0e7ad NC |
1514 | if (d[1] == 'D') |
1515 | break; | |
252b5132 | 1516 | |
47b0e7ad NC |
1517 | /* Don't use for printout the variants of most floating |
1518 | point coprocessor instructions which use the same | |
1519 | register number in two places, as above. */ | |
1520 | if (*d == '\0') | |
afa2158f | 1521 | for (d = args; *d; d += 2) |
47b0e7ad NC |
1522 | if (d[1] == 't') |
1523 | break; | |
252b5132 | 1524 | |
47b0e7ad NC |
1525 | /* Don't match fmovel with more than one register; |
1526 | wait for fmoveml. */ | |
1527 | if (*d == '\0') | |
1528 | { | |
afa2158f | 1529 | for (d = args; *d; d += 2) |
47b0e7ad NC |
1530 | { |
1531 | if (d[0] == 's' && d[1] == '8') | |
1532 | { | |
1533 | val = fetch_arg (buffer, d[1], 3, info); | |
62443ade NC |
1534 | if (val < 0) |
1535 | return 0; | |
47b0e7ad NC |
1536 | if ((val & (val - 1)) != 0) |
1537 | break; | |
1538 | } | |
1539 | } | |
1540 | } | |
252b5132 | 1541 | |
dc82c973 AS |
1542 | /* Don't match FPU insns with non-default coprocessor ID. */ |
1543 | if (*d == '\0') | |
1544 | { | |
afa2158f | 1545 | for (d = args; *d; d += 2) |
dc82c973 AS |
1546 | { |
1547 | if (d[0] == 'I') | |
1548 | { | |
1549 | val = fetch_arg (buffer, 'd', 3, info); | |
1550 | if (val != 1) | |
1551 | break; | |
1552 | } | |
1553 | } | |
1554 | } | |
1555 | ||
47b0e7ad | 1556 | if (*d == '\0') |
a596001e | 1557 | if ((val = match_insn_m68k (memaddr, info, opc))) |
47b0e7ad NC |
1558 | return val; |
1559 | } | |
252b5132 | 1560 | } |
a596001e RS |
1561 | return 0; |
1562 | } | |
1563 | ||
1564 | /* Print the m68k instruction at address MEMADDR in debugged memory, | |
1565 | on INFO->STREAM. Returns length of the instruction, in bytes. */ | |
1566 | ||
1567 | int | |
1568 | print_insn_m68k (bfd_vma memaddr, disassemble_info *info) | |
1569 | { | |
1570 | unsigned int arch_mask; | |
1571 | struct private priv; | |
1572 | int val; | |
1573 | ||
1574 | bfd_byte *buffer = priv.the_buffer; | |
1575 | ||
62443ade | 1576 | info->private_data = & priv; |
a596001e RS |
1577 | /* Tell objdump to use two bytes per chunk |
1578 | and six bytes per line for displaying raw data. */ | |
1579 | info->bytes_per_chunk = 2; | |
1580 | info->bytes_per_line = 6; | |
1581 | info->display_endian = BFD_ENDIAN_BIG; | |
1582 | priv.max_fetched = priv.the_buffer; | |
1583 | priv.insn_start = memaddr; | |
1584 | ||
a596001e RS |
1585 | arch_mask = bfd_m68k_mach_to_features (info->mach); |
1586 | if (!arch_mask) | |
1587 | { | |
1588 | /* First try printing an m680x0 instruction. Try printing a Coldfire | |
1589 | one if that fails. */ | |
1590 | val = m68k_scan_mask (memaddr, info, m68k_mask); | |
62443ade NC |
1591 | if (val == 0) |
1592 | val = m68k_scan_mask (memaddr, info, mcf_mask); | |
a596001e RS |
1593 | } |
1594 | else | |
1595 | { | |
1596 | val = m68k_scan_mask (memaddr, info, arch_mask); | |
a596001e | 1597 | } |
47b0e7ad | 1598 | |
62443ade NC |
1599 | if (val == 0) |
1600 | /* Handle undefined instructions. */ | |
1601 | info->fprintf_func (info->stream, "0%o", (buffer[0] << 8) + buffer[1]); | |
1602 | ||
62443ade | 1603 | return val ? val : 2; |
252b5132 | 1604 | } |