]>
Commit | Line | Data |
---|---|---|
e6e5906b PB |
1 | /* |
2 | * m68k micro operations | |
3 | * | |
0633879f | 4 | * Copyright (c) 2006-2007 CodeSourcery |
e6e5906b PB |
5 | * Written by Paul Brook |
6 | * | |
7 | * This library is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public | |
9 | * License as published by the Free Software Foundation; either | |
10 | * version 2 of the License, or (at your option) any later version. | |
11 | * | |
12 | * This library is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public | |
18 | * License along with this library; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | */ | |
21 | ||
22 | #include "exec.h" | |
23 | #include "m68k-qreg.h" | |
24 | ||
25 | #ifndef offsetof | |
26 | #define offsetof(type, field) ((size_t) &((type *)0)->field) | |
27 | #endif | |
28 | ||
29 | static long qreg_offsets[] = { | |
30 | #define DEFO32(name, offset) offsetof(CPUState, offset), | |
31 | #define DEFR(name, reg, mode) -1, | |
32 | #define DEFF64(name, offset) offsetof(CPUState, offset), | |
33 | 0, | |
34 | #include "qregs.def" | |
35 | }; | |
36 | ||
37 | #define CPU_FP_STATUS env->fp_status | |
38 | ||
39 | #define RAISE_EXCEPTION(n) do { \ | |
40 | env->exception_index = n; \ | |
41 | cpu_loop_exit(); \ | |
42 | } while(0) | |
43 | ||
44 | #define get_op helper_get_op | |
45 | #define set_op helper_set_op | |
46 | #define get_opf64 helper_get_opf64 | |
47 | #define set_opf64 helper_set_opf64 | |
48 | uint32_t | |
49 | get_op(int qreg) | |
50 | { | |
7ec47ead PB |
51 | if (qreg >= TARGET_NUM_QREGS) { |
52 | return env->qregs[qreg - TARGET_NUM_QREGS]; | |
53 | } else if (qreg == QREG_T0) { | |
e6e5906b | 54 | return T0; |
e6e5906b | 55 | } else { |
7ec47ead | 56 | return *(uint32_t *)(((long)env) + qreg_offsets[qreg]); |
e6e5906b PB |
57 | } |
58 | } | |
59 | ||
60 | void set_op(int qreg, uint32_t val) | |
61 | { | |
7ec47ead PB |
62 | if (qreg >= TARGET_NUM_QREGS) { |
63 | env->qregs[qreg - TARGET_NUM_QREGS] = val; | |
64 | } else if (qreg == QREG_T0) { | |
e6e5906b | 65 | T0 = val; |
e6e5906b | 66 | } else { |
7ec47ead | 67 | *(uint32_t *)(((long)env) + qreg_offsets[qreg]) = val; |
e6e5906b PB |
68 | } |
69 | } | |
70 | ||
71 | float64 get_opf64(int qreg) | |
72 | { | |
73 | if (qreg < TARGET_NUM_QREGS) { | |
74 | return *(float64 *)(((long)env) + qreg_offsets[qreg]); | |
75 | } else { | |
76 | return *(float64 *)&env->qregs[qreg - TARGET_NUM_QREGS]; | |
77 | } | |
78 | } | |
79 | ||
80 | void set_opf64(int qreg, float64 val) | |
81 | { | |
82 | if (qreg < TARGET_NUM_QREGS) { | |
83 | *(float64 *)(((long)env) + qreg_offsets[qreg]) = val; | |
84 | } else { | |
85 | *(float64 *)&env->qregs[qreg - TARGET_NUM_QREGS] = val; | |
86 | } | |
87 | } | |
88 | ||
0633879f | 89 | #define OP(name) void OPPROTO glue(op_,name) (void) |
e6e5906b PB |
90 | |
91 | OP(mov32) | |
92 | { | |
93 | set_op(PARAM1, get_op(PARAM2)); | |
94 | FORCE_RET(); | |
95 | } | |
96 | ||
97 | OP(mov32_im) | |
98 | { | |
99 | set_op(PARAM1, PARAM2); | |
100 | FORCE_RET(); | |
101 | } | |
102 | ||
103 | OP(movf64) | |
104 | { | |
105 | set_opf64(PARAM1, get_opf64(PARAM2)); | |
106 | FORCE_RET(); | |
107 | } | |
108 | ||
109 | OP(zerof64) | |
110 | { | |
111 | set_opf64(PARAM1, 0); | |
112 | FORCE_RET(); | |
113 | } | |
114 | ||
115 | OP(add32) | |
116 | { | |
117 | uint32_t op2 = get_op(PARAM2); | |
118 | uint32_t op3 = get_op(PARAM3); | |
119 | set_op(PARAM1, op2 + op3); | |
120 | FORCE_RET(); | |
121 | } | |
122 | ||
123 | OP(sub32) | |
124 | { | |
125 | uint32_t op2 = get_op(PARAM2); | |
126 | uint32_t op3 = get_op(PARAM3); | |
127 | set_op(PARAM1, op2 - op3); | |
128 | FORCE_RET(); | |
129 | } | |
130 | ||
131 | OP(mul32) | |
132 | { | |
133 | uint32_t op2 = get_op(PARAM2); | |
134 | uint32_t op3 = get_op(PARAM3); | |
135 | set_op(PARAM1, op2 * op3); | |
136 | FORCE_RET(); | |
137 | } | |
138 | ||
139 | OP(not32) | |
140 | { | |
141 | uint32_t arg = get_op(PARAM2); | |
142 | set_op(PARAM1, ~arg); | |
143 | FORCE_RET(); | |
144 | } | |
145 | ||
146 | OP(neg32) | |
147 | { | |
148 | uint32_t arg = get_op(PARAM2); | |
149 | set_op(PARAM1, -arg); | |
150 | FORCE_RET(); | |
151 | } | |
152 | ||
153 | OP(bswap32) | |
154 | { | |
155 | uint32_t arg = get_op(PARAM2); | |
156 | arg = (arg >> 24) | (arg << 24) | |
157 | | ((arg >> 16) & 0xff00) | ((arg << 16) & 0xff0000); | |
158 | set_op(PARAM1, arg); | |
159 | FORCE_RET(); | |
160 | } | |
161 | ||
162 | OP(btest) | |
163 | { | |
164 | uint32_t op1 = get_op(PARAM1); | |
165 | uint32_t op2 = get_op(PARAM2); | |
166 | if (op1 & op2) | |
167 | env->cc_dest &= ~CCF_Z; | |
168 | else | |
169 | env->cc_dest |= CCF_Z; | |
170 | FORCE_RET(); | |
171 | } | |
172 | ||
821f7e76 PB |
173 | OP(ff1) |
174 | { | |
175 | uint32_t arg = get_op(PARAM2); | |
176 | int n; | |
177 | for (n = 32; arg; n--) | |
178 | arg >>= 1; | |
179 | set_op(PARAM1, n); | |
180 | FORCE_RET(); | |
181 | } | |
182 | ||
8d7fe053 | 183 | OP(subx_cc) |
e6e5906b PB |
184 | { |
185 | uint32_t op1 = get_op(PARAM1); | |
186 | uint32_t op2 = get_op(PARAM2); | |
187 | uint32_t res; | |
188 | if (env->cc_x) { | |
189 | env->cc_x = (op1 <= op2); | |
190 | env->cc_op = CC_OP_SUBX; | |
191 | res = op1 - (op2 + 1); | |
192 | } else { | |
193 | env->cc_x = (op1 < op2); | |
194 | env->cc_op = CC_OP_SUB; | |
195 | res = op1 - op2; | |
196 | } | |
197 | set_op(PARAM1, res); | |
198 | FORCE_RET(); | |
199 | } | |
200 | ||
8d7fe053 | 201 | OP(addx_cc) |
e6e5906b PB |
202 | { |
203 | uint32_t op1 = get_op(PARAM1); | |
204 | uint32_t op2 = get_op(PARAM2); | |
205 | uint32_t res; | |
206 | if (env->cc_x) { | |
207 | res = op1 + op2 + 1; | |
208 | env->cc_x = (res <= op2); | |
209 | env->cc_op = CC_OP_ADDX; | |
210 | } else { | |
211 | res = op1 + op2; | |
212 | env->cc_x = (res < op2); | |
213 | env->cc_op = CC_OP_ADD; | |
214 | } | |
215 | set_op(PARAM1, res); | |
216 | FORCE_RET(); | |
217 | } | |
218 | ||
219 | /* Logic ops. */ | |
220 | ||
221 | OP(and32) | |
222 | { | |
223 | uint32_t op2 = get_op(PARAM2); | |
224 | uint32_t op3 = get_op(PARAM3); | |
225 | set_op(PARAM1, op2 & op3); | |
226 | FORCE_RET(); | |
227 | } | |
228 | ||
229 | OP(or32) | |
230 | { | |
231 | uint32_t op2 = get_op(PARAM2); | |
232 | uint32_t op3 = get_op(PARAM3); | |
233 | set_op(PARAM1, op2 | op3); | |
234 | FORCE_RET(); | |
235 | } | |
236 | ||
237 | OP(xor32) | |
238 | { | |
239 | uint32_t op2 = get_op(PARAM2); | |
240 | uint32_t op3 = get_op(PARAM3); | |
241 | set_op(PARAM1, op2 ^ op3); | |
242 | FORCE_RET(); | |
243 | } | |
244 | ||
245 | /* Shifts. */ | |
246 | OP(shl32) | |
247 | { | |
248 | uint32_t op2 = get_op(PARAM2); | |
249 | uint32_t op3 = get_op(PARAM3); | |
250 | uint32_t result; | |
251 | result = op2 << op3; | |
252 | set_op(PARAM1, result); | |
253 | FORCE_RET(); | |
254 | } | |
255 | ||
256 | OP(shl_cc) | |
257 | { | |
258 | uint32_t op1 = get_op(PARAM1); | |
259 | uint32_t op2 = get_op(PARAM2); | |
260 | uint32_t result; | |
261 | result = op1 << op2; | |
262 | set_op(PARAM1, result); | |
263 | env->cc_x = (op1 << (op2 - 1)) & 1; | |
264 | FORCE_RET(); | |
265 | } | |
266 | ||
267 | OP(shr32) | |
268 | { | |
269 | uint32_t op2 = get_op(PARAM2); | |
270 | uint32_t op3 = get_op(PARAM3); | |
271 | uint32_t result; | |
272 | result = op2 >> op3; | |
273 | set_op(PARAM1, result); | |
274 | FORCE_RET(); | |
275 | } | |
276 | ||
277 | OP(shr_cc) | |
278 | { | |
279 | uint32_t op1 = get_op(PARAM1); | |
280 | uint32_t op2 = get_op(PARAM2); | |
281 | uint32_t result; | |
282 | result = op1 >> op2; | |
283 | set_op(PARAM1, result); | |
284 | env->cc_x = (op1 >> (op2 - 1)) & 1; | |
285 | FORCE_RET(); | |
286 | } | |
287 | ||
acf930aa PB |
288 | OP(sar32) |
289 | { | |
290 | int32_t op2 = get_op(PARAM2); | |
291 | uint32_t op3 = get_op(PARAM3); | |
292 | uint32_t result; | |
293 | result = op2 >> op3; | |
294 | set_op(PARAM1, result); | |
295 | FORCE_RET(); | |
296 | } | |
297 | ||
e6e5906b PB |
298 | OP(sar_cc) |
299 | { | |
300 | int32_t op1 = get_op(PARAM1); | |
301 | uint32_t op2 = get_op(PARAM2); | |
302 | uint32_t result; | |
303 | result = op1 >> op2; | |
304 | set_op(PARAM1, result); | |
305 | env->cc_x = (op1 >> (op2 - 1)) & 1; | |
306 | FORCE_RET(); | |
307 | } | |
308 | ||
309 | /* Value extend. */ | |
310 | ||
311 | OP(ext8u32) | |
312 | { | |
313 | uint32_t op2 = get_op(PARAM2); | |
314 | set_op(PARAM1, (uint8_t)op2); | |
315 | FORCE_RET(); | |
316 | } | |
317 | ||
318 | OP(ext8s32) | |
319 | { | |
320 | uint32_t op2 = get_op(PARAM2); | |
321 | set_op(PARAM1, (int8_t)op2); | |
322 | FORCE_RET(); | |
323 | } | |
324 | ||
325 | OP(ext16u32) | |
326 | { | |
327 | uint32_t op2 = get_op(PARAM2); | |
328 | set_op(PARAM1, (uint16_t)op2); | |
329 | FORCE_RET(); | |
330 | } | |
331 | ||
332 | OP(ext16s32) | |
333 | { | |
334 | uint32_t op2 = get_op(PARAM2); | |
335 | set_op(PARAM1, (int16_t)op2); | |
336 | FORCE_RET(); | |
337 | } | |
338 | ||
e6e5906b PB |
339 | OP(flush_flags) |
340 | { | |
341 | int cc_op = PARAM1; | |
342 | if (cc_op == CC_OP_DYNAMIC) | |
343 | cc_op = env->cc_op; | |
344 | cpu_m68k_flush_flags(env, cc_op); | |
345 | FORCE_RET(); | |
346 | } | |
347 | ||
348 | OP(divu) | |
349 | { | |
350 | uint32_t num; | |
351 | uint32_t den; | |
352 | uint32_t quot; | |
353 | uint32_t rem; | |
354 | uint32_t flags; | |
355 | ||
356 | num = env->div1; | |
357 | den = env->div2; | |
358 | /* ??? This needs to make sure the throwing location is accurate. */ | |
359 | if (den == 0) | |
360 | RAISE_EXCEPTION(EXCP_DIV0); | |
361 | quot = num / den; | |
362 | rem = num % den; | |
363 | flags = 0; | |
2d37be61 PB |
364 | /* Avoid using a PARAM1 of zero. This breaks dyngen because it uses |
365 | the address of a symbol, and gcc knows symbols can't have address | |
366 | zero. */ | |
367 | if (PARAM1 == 2 && quot > 0xffff) | |
e6e5906b PB |
368 | flags |= CCF_V; |
369 | if (quot == 0) | |
370 | flags |= CCF_Z; | |
371 | else if ((int32_t)quot < 0) | |
372 | flags |= CCF_N; | |
373 | env->div1 = quot; | |
374 | env->div2 = rem; | |
375 | env->cc_dest = flags; | |
376 | FORCE_RET(); | |
377 | } | |
378 | ||
379 | OP(divs) | |
380 | { | |
381 | int32_t num; | |
382 | int32_t den; | |
383 | int32_t quot; | |
384 | int32_t rem; | |
385 | int32_t flags; | |
386 | ||
387 | num = env->div1; | |
388 | den = env->div2; | |
389 | if (den == 0) | |
390 | RAISE_EXCEPTION(EXCP_DIV0); | |
391 | quot = num / den; | |
392 | rem = num % den; | |
393 | flags = 0; | |
2d37be61 | 394 | if (PARAM1 == 2 && quot != (int16_t)quot) |
e6e5906b PB |
395 | flags |= CCF_V; |
396 | if (quot == 0) | |
397 | flags |= CCF_Z; | |
398 | else if (quot < 0) | |
399 | flags |= CCF_N; | |
400 | env->div1 = quot; | |
401 | env->div2 = rem; | |
402 | env->cc_dest = flags; | |
403 | FORCE_RET(); | |
404 | } | |
405 | ||
a87295e8 | 406 | /* Halt is special because it may be a semihosting call. */ |
0633879f | 407 | OP(halt) |
a87295e8 PB |
408 | { |
409 | RAISE_EXCEPTION(EXCP_HALT_INSN); | |
410 | FORCE_RET(); | |
411 | } | |
412 | ||
413 | OP(stop) | |
0633879f PB |
414 | { |
415 | env->halted = 1; | |
416 | RAISE_EXCEPTION(EXCP_HLT); | |
417 | FORCE_RET(); | |
418 | } | |
419 | ||
e6e5906b PB |
420 | OP(raise_exception) |
421 | { | |
422 | RAISE_EXCEPTION(PARAM1); | |
423 | FORCE_RET(); | |
424 | } | |
425 | ||
426 | /* Floating point comparison sets flags differently to other instructions. */ | |
427 | ||
428 | OP(sub_cmpf64) | |
429 | { | |
430 | float64 src0; | |
431 | float64 src1; | |
432 | src0 = get_opf64(PARAM2); | |
433 | src1 = get_opf64(PARAM3); | |
434 | set_opf64(PARAM1, helper_sub_cmpf64(env, src0, src1)); | |
435 | FORCE_RET(); | |
436 | } | |
437 | ||
438 | OP(update_xflag_tst) | |
439 | { | |
440 | uint32_t op1 = get_op(PARAM1); | |
441 | env->cc_x = op1; | |
442 | FORCE_RET(); | |
443 | } | |
444 | ||
445 | OP(update_xflag_lt) | |
446 | { | |
447 | uint32_t op1 = get_op(PARAM1); | |
448 | uint32_t op2 = get_op(PARAM2); | |
449 | env->cc_x = (op1 < op2); | |
450 | FORCE_RET(); | |
451 | } | |
452 | ||
453 | OP(get_xflag) | |
454 | { | |
455 | set_op(PARAM1, env->cc_x); | |
456 | FORCE_RET(); | |
457 | } | |
458 | ||
459 | OP(logic_cc) | |
460 | { | |
461 | uint32_t op1 = get_op(PARAM1); | |
462 | env->cc_dest = op1; | |
463 | FORCE_RET(); | |
464 | } | |
465 | ||
466 | OP(update_cc_add) | |
467 | { | |
468 | uint32_t op1 = get_op(PARAM1); | |
469 | uint32_t op2 = get_op(PARAM2); | |
470 | env->cc_dest = op1; | |
471 | env->cc_src = op2; | |
472 | FORCE_RET(); | |
473 | } | |
474 | ||
475 | OP(fp_result) | |
476 | { | |
477 | env->fp_result = get_opf64(PARAM1); | |
478 | FORCE_RET(); | |
479 | } | |
480 | ||
20dcee94 PB |
481 | OP(set_sr) |
482 | { | |
483 | env->sr = get_op(PARAM1); | |
484 | m68k_switch_sp(env); | |
485 | FORCE_RET(); | |
486 | } | |
487 | ||
e6e5906b PB |
488 | OP(jmp) |
489 | { | |
490 | GOTO_LABEL_PARAM(1); | |
491 | } | |
492 | ||
493 | /* These ops involve a function call, which probably requires a stack frame | |
494 | and breaks things on some hosts. */ | |
495 | OP(jmp_z32) | |
496 | { | |
497 | uint32_t arg = get_op(PARAM1); | |
498 | if (arg == 0) | |
499 | GOTO_LABEL_PARAM(2); | |
500 | FORCE_RET(); | |
501 | } | |
502 | ||
503 | OP(jmp_nz32) | |
504 | { | |
505 | uint32_t arg = get_op(PARAM1); | |
506 | if (arg != 0) | |
507 | GOTO_LABEL_PARAM(2); | |
508 | FORCE_RET(); | |
509 | } | |
510 | ||
511 | OP(jmp_s32) | |
512 | { | |
513 | int32_t arg = get_op(PARAM1); | |
514 | if (arg < 0) | |
515 | GOTO_LABEL_PARAM(2); | |
516 | FORCE_RET(); | |
517 | } | |
518 | ||
519 | OP(jmp_ns32) | |
520 | { | |
521 | int32_t arg = get_op(PARAM1); | |
522 | if (arg >= 0) | |
523 | GOTO_LABEL_PARAM(2); | |
524 | FORCE_RET(); | |
525 | } | |
526 | ||
527 | void OPPROTO op_goto_tb0(void) | |
528 | { | |
529 | GOTO_TB(op_goto_tb0, PARAM1, 0); | |
530 | } | |
531 | ||
532 | void OPPROTO op_goto_tb1(void) | |
533 | { | |
534 | GOTO_TB(op_goto_tb1, PARAM1, 1); | |
535 | } | |
536 | ||
537 | OP(exit_tb) | |
538 | { | |
539 | EXIT_TB(); | |
540 | } | |
541 | ||
542 | ||
543 | /* Floating point. */ | |
544 | OP(f64_to_i32) | |
545 | { | |
546 | set_op(PARAM1, float64_to_int32(get_opf64(PARAM2), &CPU_FP_STATUS)); | |
547 | FORCE_RET(); | |
548 | } | |
549 | ||
550 | OP(f64_to_f32) | |
551 | { | |
552 | union { | |
553 | float32 f; | |
554 | uint32_t i; | |
555 | } u; | |
556 | u.f = float64_to_float32(get_opf64(PARAM2), &CPU_FP_STATUS); | |
557 | set_op(PARAM1, u.i); | |
558 | FORCE_RET(); | |
559 | } | |
560 | ||
561 | OP(i32_to_f64) | |
562 | { | |
563 | set_opf64(PARAM1, int32_to_float64(get_op(PARAM2), &CPU_FP_STATUS)); | |
564 | FORCE_RET(); | |
565 | } | |
566 | ||
567 | OP(f32_to_f64) | |
568 | { | |
569 | union { | |
570 | float32 f; | |
571 | uint32_t i; | |
572 | } u; | |
573 | u.i = get_op(PARAM2); | |
574 | set_opf64(PARAM1, float32_to_float64(u.f, &CPU_FP_STATUS)); | |
575 | FORCE_RET(); | |
576 | } | |
577 | ||
578 | OP(absf64) | |
579 | { | |
580 | float64 op0 = get_opf64(PARAM2); | |
581 | set_opf64(PARAM1, float64_abs(op0)); | |
582 | FORCE_RET(); | |
583 | } | |
584 | ||
585 | OP(chsf64) | |
586 | { | |
587 | float64 op0 = get_opf64(PARAM2); | |
588 | set_opf64(PARAM1, float64_chs(op0)); | |
589 | FORCE_RET(); | |
590 | } | |
591 | ||
592 | OP(sqrtf64) | |
593 | { | |
594 | float64 op0 = get_opf64(PARAM2); | |
595 | set_opf64(PARAM1, float64_sqrt(op0, &CPU_FP_STATUS)); | |
596 | FORCE_RET(); | |
597 | } | |
598 | ||
599 | OP(addf64) | |
600 | { | |
601 | float64 op0 = get_opf64(PARAM2); | |
602 | float64 op1 = get_opf64(PARAM3); | |
603 | set_opf64(PARAM1, float64_add(op0, op1, &CPU_FP_STATUS)); | |
604 | FORCE_RET(); | |
605 | } | |
606 | ||
607 | OP(subf64) | |
608 | { | |
609 | float64 op0 = get_opf64(PARAM2); | |
610 | float64 op1 = get_opf64(PARAM3); | |
611 | set_opf64(PARAM1, float64_sub(op0, op1, &CPU_FP_STATUS)); | |
612 | FORCE_RET(); | |
613 | } | |
614 | ||
615 | OP(mulf64) | |
616 | { | |
617 | float64 op0 = get_opf64(PARAM2); | |
618 | float64 op1 = get_opf64(PARAM3); | |
619 | set_opf64(PARAM1, float64_mul(op0, op1, &CPU_FP_STATUS)); | |
620 | FORCE_RET(); | |
621 | } | |
622 | ||
623 | OP(divf64) | |
624 | { | |
625 | float64 op0 = get_opf64(PARAM2); | |
626 | float64 op1 = get_opf64(PARAM3); | |
627 | set_opf64(PARAM1, float64_div(op0, op1, &CPU_FP_STATUS)); | |
628 | FORCE_RET(); | |
629 | } | |
630 | ||
631 | OP(iround_f64) | |
632 | { | |
633 | float64 op0 = get_opf64(PARAM2); | |
634 | set_opf64(PARAM1, float64_round_to_int(op0, &CPU_FP_STATUS)); | |
635 | FORCE_RET(); | |
636 | } | |
637 | ||
638 | OP(itrunc_f64) | |
639 | { | |
640 | float64 op0 = get_opf64(PARAM2); | |
641 | set_opf64(PARAM1, float64_trunc_to_int(op0, &CPU_FP_STATUS)); | |
642 | FORCE_RET(); | |
643 | } | |
644 | ||
645 | OP(compare_quietf64) | |
646 | { | |
647 | float64 op0 = get_opf64(PARAM2); | |
648 | float64 op1 = get_opf64(PARAM3); | |
649 | set_op(PARAM1, float64_compare_quiet(op0, op1, &CPU_FP_STATUS)); | |
650 | FORCE_RET(); | |
651 | } | |
0633879f PB |
652 | |
653 | OP(movec) | |
654 | { | |
655 | int op1 = get_op(PARAM1); | |
656 | uint32_t op2 = get_op(PARAM2); | |
657 | helper_movec(env, op1, op2); | |
658 | } | |
659 | ||
660 | /* Memory access. */ | |
661 | ||
662 | #define MEMSUFFIX _raw | |
663 | #include "op_mem.h" | |
664 | ||
665 | #if !defined(CONFIG_USER_ONLY) | |
666 | #define MEMSUFFIX _user | |
667 | #include "op_mem.h" | |
668 | #define MEMSUFFIX _kernel | |
669 | #include "op_mem.h" | |
670 | #endif | |
acf930aa PB |
671 | |
672 | /* MAC unit. */ | |
673 | /* TODO: The MAC instructions use 64-bit arithmetic fairly extensively. | |
674 | This results in fairly large ops (and sometimes other issues) on 32-bit | |
675 | hosts. Maybe move most of them into helpers. */ | |
676 | OP(macmuls) | |
677 | { | |
678 | uint32_t op1 = get_op(PARAM1); | |
679 | uint32_t op2 = get_op(PARAM2); | |
680 | int64_t product; | |
681 | int64_t res; | |
682 | ||
683 | product = (uint64_t)op1 * op2; | |
684 | res = (product << 24) >> 24; | |
685 | if (res != product) { | |
686 | env->macsr |= MACSR_V; | |
687 | if (env->macsr & MACSR_OMC) { | |
688 | /* Make sure the accumulate operation overflows. */ | |
689 | if (product < 0) | |
690 | res = ~(1ll << 50); | |
691 | else | |
692 | res = 1ll << 50; | |
693 | } | |
694 | } | |
695 | env->mactmp = res; | |
696 | FORCE_RET(); | |
697 | } | |
698 | ||
699 | OP(macmulu) | |
700 | { | |
701 | uint32_t op1 = get_op(PARAM1); | |
702 | uint32_t op2 = get_op(PARAM2); | |
703 | uint64_t product; | |
704 | ||
705 | product = (uint64_t)op1 * op2; | |
706 | if (product & (0xffffffull << 40)) { | |
707 | env->macsr |= MACSR_V; | |
708 | if (env->macsr & MACSR_OMC) { | |
709 | /* Make sure the accumulate operation overflows. */ | |
710 | product = 1ll << 50; | |
711 | } else { | |
712 | product &= ((1ull << 40) - 1); | |
713 | } | |
714 | } | |
715 | env->mactmp = product; | |
716 | FORCE_RET(); | |
717 | } | |
718 | ||
719 | OP(macmulf) | |
720 | { | |
721 | int32_t op1 = get_op(PARAM1); | |
722 | int32_t op2 = get_op(PARAM2); | |
723 | uint64_t product; | |
724 | uint32_t remainder; | |
725 | ||
726 | product = (uint64_t)op1 * op2; | |
727 | if (env->macsr & MACSR_RT) { | |
728 | remainder = product & 0xffffff; | |
729 | product >>= 24; | |
730 | if (remainder > 0x800000) | |
731 | product++; | |
732 | else if (remainder == 0x800000) | |
733 | product += (product & 1); | |
734 | } else { | |
735 | product >>= 24; | |
736 | } | |
737 | env->mactmp = product; | |
738 | FORCE_RET(); | |
739 | } | |
740 | ||
741 | OP(macshl) | |
742 | { | |
743 | env->mactmp <<= 1; | |
744 | } | |
745 | ||
746 | OP(macshr) | |
747 | { | |
748 | env->mactmp >>= 1; | |
749 | } | |
750 | ||
751 | OP(macadd) | |
752 | { | |
753 | int acc = PARAM1; | |
754 | env->macc[acc] += env->mactmp; | |
755 | FORCE_RET(); | |
756 | } | |
757 | ||
758 | OP(macsub) | |
759 | { | |
760 | int acc = PARAM1; | |
761 | env->macc[acc] -= env->mactmp; | |
762 | FORCE_RET(); | |
763 | } | |
764 | ||
765 | OP(macsats) | |
766 | { | |
767 | int acc = PARAM1; | |
768 | int64_t sum; | |
769 | int64_t result; | |
770 | ||
771 | sum = env->macc[acc]; | |
772 | result = (sum << 16) >> 16; | |
773 | if (result != sum) { | |
774 | env->macsr |= MACSR_V; | |
775 | } | |
776 | if (env->macsr & MACSR_V) { | |
777 | env->macsr |= MACSR_PAV0 << acc; | |
778 | if (env->macsr & MACSR_OMC) { | |
779 | /* The result is saturated to 32 bits, despite overflow occuring | |
780 | at 48 bits. Seems weird, but that's what the hardware docs | |
781 | say. */ | |
782 | result = (result >> 63) ^ 0x7fffffff; | |
783 | } | |
784 | } | |
785 | env->macc[acc] = result; | |
786 | FORCE_RET(); | |
787 | } | |
788 | ||
789 | OP(macsatu) | |
790 | { | |
791 | int acc = PARAM1; | |
792 | uint64_t sum; | |
793 | ||
794 | sum = env->macc[acc]; | |
795 | if (sum & (0xffffull << 48)) { | |
796 | env->macsr |= MACSR_V; | |
797 | } | |
798 | if (env->macsr & MACSR_V) { | |
799 | env->macsr |= MACSR_PAV0 << acc; | |
800 | if (env->macsr & MACSR_OMC) { | |
801 | if (sum > (1ull << 53)) | |
802 | sum = 0; | |
803 | else | |
804 | sum = (1ull << 48) - 1; | |
805 | } else { | |
806 | sum &= ((1ull << 48) - 1); | |
807 | } | |
808 | } | |
809 | FORCE_RET(); | |
810 | } | |
811 | ||
812 | OP(macsatf) | |
813 | { | |
814 | int acc = PARAM1; | |
815 | int64_t sum; | |
816 | int64_t result; | |
817 | ||
818 | sum = env->macc[acc]; | |
819 | result = (sum << 16) >> 16; | |
820 | if (result != sum) { | |
821 | env->macsr |= MACSR_V; | |
822 | } | |
823 | if (env->macsr & MACSR_V) { | |
824 | env->macsr |= MACSR_PAV0 << acc; | |
825 | if (env->macsr & MACSR_OMC) { | |
826 | result = (result >> 63) ^ 0x7fffffffffffll; | |
827 | } | |
828 | } | |
829 | env->macc[acc] = result; | |
830 | FORCE_RET(); | |
831 | } | |
832 | ||
833 | OP(mac_clear_flags) | |
834 | { | |
835 | env->macsr &= ~(MACSR_V | MACSR_Z | MACSR_N | MACSR_EV); | |
836 | } | |
837 | ||
838 | OP(mac_set_flags) | |
839 | { | |
840 | int acc = PARAM1; | |
841 | uint64_t val; | |
842 | val = env->macc[acc]; | |
843 | if (val == 0) | |
844 | env->macsr |= MACSR_Z; | |
845 | else if (val & (1ull << 47)); | |
846 | env->macsr |= MACSR_N; | |
847 | if (env->macsr & (MACSR_PAV0 << acc)) { | |
848 | env->macsr |= MACSR_V; | |
849 | } | |
850 | if (env->macsr & MACSR_FI) { | |
851 | val = ((int64_t)val) >> 40; | |
852 | if (val != 0 && val != -1) | |
853 | env->macsr |= MACSR_EV; | |
854 | } else if (env->macsr & MACSR_SU) { | |
855 | val = ((int64_t)val) >> 32; | |
856 | if (val != 0 && val != -1) | |
857 | env->macsr |= MACSR_EV; | |
858 | } else { | |
859 | if ((val >> 32) != 0) | |
860 | env->macsr |= MACSR_EV; | |
861 | } | |
862 | FORCE_RET(); | |
863 | } | |
864 | ||
865 | OP(get_macf) | |
866 | { | |
867 | int acc = PARAM2; | |
868 | int64_t val; | |
869 | int rem; | |
870 | uint32_t result; | |
871 | ||
872 | val = env->macc[acc]; | |
873 | if (env->macsr & MACSR_SU) { | |
874 | /* 16-bit rounding. */ | |
875 | rem = val & 0xffffff; | |
876 | val = (val >> 24) & 0xffffu; | |
877 | if (rem > 0x800000) | |
878 | val++; | |
879 | else if (rem == 0x800000) | |
880 | val += (val & 1); | |
881 | } else if (env->macsr & MACSR_RT) { | |
882 | /* 32-bit rounding. */ | |
883 | rem = val & 0xff; | |
884 | val >>= 8; | |
885 | if (rem > 0x80) | |
886 | val++; | |
887 | else if (rem == 0x80) | |
888 | val += (val & 1); | |
889 | } else { | |
890 | /* No rounding. */ | |
891 | val >>= 8; | |
892 | } | |
893 | if (env->macsr & MACSR_OMC) { | |
894 | /* Saturate. */ | |
895 | if (env->macsr & MACSR_SU) { | |
896 | if (val != (uint16_t) val) { | |
897 | result = ((val >> 63) ^ 0x7fff) & 0xffff; | |
898 | } else { | |
899 | result = val & 0xffff; | |
900 | } | |
901 | } else { | |
902 | if (val != (uint32_t)val) { | |
903 | result = ((uint32_t)(val >> 63) & 0x7fffffff); | |
904 | } else { | |
905 | result = (uint32_t)val; | |
906 | } | |
907 | } | |
908 | } else { | |
909 | /* No saturation. */ | |
910 | if (env->macsr & MACSR_SU) { | |
911 | result = val & 0xffff; | |
912 | } else { | |
913 | result = (uint32_t)val; | |
914 | } | |
915 | } | |
916 | set_op(PARAM1, result); | |
917 | FORCE_RET(); | |
918 | } | |
919 | ||
920 | OP(get_maci) | |
921 | { | |
922 | int acc = PARAM2; | |
923 | set_op(PARAM1, (uint32_t)env->macc[acc]); | |
924 | FORCE_RET(); | |
925 | } | |
926 | ||
927 | OP(get_macs) | |
928 | { | |
929 | int acc = PARAM2; | |
930 | int64_t val = env->macc[acc]; | |
931 | uint32_t result; | |
932 | if (val == (int32_t)val) { | |
933 | result = (int32_t)val; | |
934 | } else { | |
935 | result = (val >> 61) ^ 0x7fffffff; | |
936 | } | |
937 | set_op(PARAM1, result); | |
938 | FORCE_RET(); | |
939 | } | |
940 | ||
941 | OP(get_macu) | |
942 | { | |
943 | int acc = PARAM2; | |
944 | uint64_t val = env->macc[acc]; | |
945 | uint32_t result; | |
946 | if ((val >> 32) == 0) { | |
947 | result = (uint32_t)val; | |
948 | } else { | |
949 | result = 0xffffffffu; | |
950 | } | |
951 | set_op(PARAM1, result); | |
952 | FORCE_RET(); | |
953 | } | |
954 | ||
955 | OP(clear_mac) | |
956 | { | |
957 | int acc = PARAM1; | |
958 | ||
959 | env->macc[acc] = 0; | |
960 | env->macsr &= ~(MACSR_PAV0 << acc); | |
961 | FORCE_RET(); | |
962 | } | |
963 | ||
964 | OP(move_mac) | |
965 | { | |
966 | int dest = PARAM1; | |
967 | int src = PARAM2; | |
968 | uint32_t mask; | |
969 | env->macc[dest] = env->macc[src]; | |
970 | mask = MACSR_PAV0 << dest; | |
971 | if (env->macsr & (MACSR_PAV0 << src)) | |
972 | env->macsr |= mask; | |
973 | else | |
974 | env->macsr &= ~mask; | |
975 | FORCE_RET(); | |
976 | } | |
977 | ||
978 | OP(get_mac_extf) | |
979 | { | |
980 | uint32_t val; | |
981 | int acc = PARAM2; | |
982 | val = env->macc[acc] & 0x00ff; | |
983 | val = (env->macc[acc] >> 32) & 0xff00; | |
984 | val |= (env->macc[acc + 1] << 16) & 0x00ff0000; | |
985 | val |= (env->macc[acc + 1] >> 16) & 0xff000000; | |
986 | set_op(PARAM1, val); | |
987 | FORCE_RET(); | |
988 | } | |
989 | ||
990 | OP(get_mac_exti) | |
991 | { | |
992 | uint32_t val; | |
993 | int acc = PARAM2; | |
994 | val = (env->macc[acc] >> 32) & 0xffff; | |
995 | val |= (env->macc[acc + 1] >> 16) & 0xffff0000; | |
996 | set_op(PARAM1, val); | |
997 | FORCE_RET(); | |
998 | } | |
999 | ||
1000 | OP(set_macf) | |
1001 | { | |
1002 | int acc = PARAM2; | |
1003 | int32_t val = get_op(PARAM1); | |
1004 | env->macc[acc] = ((int64_t)val) << 8; | |
1005 | env->macsr &= ~(MACSR_PAV0 << acc); | |
1006 | FORCE_RET(); | |
1007 | } | |
1008 | ||
1009 | OP(set_macs) | |
1010 | { | |
1011 | int acc = PARAM2; | |
1012 | int32_t val = get_op(PARAM1); | |
1013 | env->macc[acc] = val; | |
1014 | env->macsr &= ~(MACSR_PAV0 << acc); | |
1015 | FORCE_RET(); | |
1016 | } | |
1017 | ||
1018 | OP(set_macu) | |
1019 | { | |
1020 | int acc = PARAM2; | |
1021 | uint32_t val = get_op(PARAM1); | |
1022 | env->macc[acc] = val; | |
1023 | env->macsr &= ~(MACSR_PAV0 << acc); | |
1024 | FORCE_RET(); | |
1025 | } | |
1026 | ||
1027 | OP(set_mac_extf) | |
1028 | { | |
1029 | int acc = PARAM2; | |
1030 | int32_t val = get_op(PARAM1); | |
1031 | int64_t res; | |
1032 | int32_t tmp; | |
1033 | res = env->macc[acc] & 0xffffffff00ull; | |
1034 | tmp = (int16_t)(val & 0xff00); | |
1035 | res |= ((int64_t)tmp) << 32; | |
1036 | res |= val & 0xff; | |
1037 | env->macc[acc] = res; | |
1038 | res = env->macc[acc + 1] & 0xffffffff00ull; | |
1039 | tmp = (val & 0xff000000); | |
1040 | res |= ((int64_t)tmp) << 16; | |
1041 | res |= (val >> 16) & 0xff; | |
1042 | env->macc[acc + 1] = res; | |
1043 | } | |
1044 | ||
1045 | OP(set_mac_exts) | |
1046 | { | |
1047 | int acc = PARAM2; | |
1048 | int32_t val = get_op(PARAM1); | |
1049 | int64_t res; | |
1050 | int32_t tmp; | |
1051 | res = (uint32_t)env->macc[acc]; | |
1052 | tmp = (int16_t)val; | |
1053 | res |= ((int64_t)tmp) << 32; | |
1054 | env->macc[acc] = res; | |
1055 | res = (uint32_t)env->macc[acc + 1]; | |
1056 | tmp = val & 0xffff0000; | |
1057 | res |= (int64_t)tmp << 16; | |
1058 | env->macc[acc + 1] = res; | |
1059 | } | |
1060 | ||
1061 | OP(set_mac_extu) | |
1062 | { | |
1063 | int acc = PARAM2; | |
1064 | int32_t val = get_op(PARAM1); | |
1065 | uint64_t res; | |
1066 | res = (uint32_t)env->macc[acc]; | |
1067 | res |= ((uint64_t)(val & 0xffff)) << 32; | |
1068 | env->macc[acc] = res; | |
1069 | res = (uint32_t)env->macc[acc + 1]; | |
1070 | res |= (uint64_t)(val & 0xffff0000) << 16; | |
1071 | env->macc[acc + 1] = res; | |
1072 | } | |
1073 | ||
1074 | OP(set_macsr) | |
1075 | { | |
1076 | m68k_set_macsr(env, get_op(PARAM1)); | |
1077 | } |