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kvm: Fix race between timer signals and vcpu entry under !IOTHREAD
[qemu.git] / target-cris / translate_v10.c
blob41db158965fd38c5b2219bb9f1318841a604f2b2
1 /*
2 * CRISv10 emulation for qemu: main translation routines.
3 *
4 * Copyright (c) 2010 AXIS Communications AB
5 * Written by Edgar E. Iglesias.
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 * Lesser 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, see <http://www.gnu.org/licenses/>.
19 */
20
21 #include "crisv10-decode.h"
22
23 static const char *regnames_v10[] =
24 {
25 "$r0", "$r1", "$r2", "$r3",
26 "$r4", "$r5", "$r6", "$r7",
27 "$r8", "$r9", "$r10", "$r11",
28 "$r12", "$r13", "$sp", "$pc",
29 };
30
31 static const char *pregnames_v10[] =
32 {
33 "$bz", "$vr", "$p2", "$p3",
34 "$wz", "$ccr", "$p6-prefix", "$mof",
35 "$dz", "$ibr", "$irp", "$srp",
36 "$bar", "$dccr", "$brp", "$usp",
37 };
38
39 /* We need this table to handle preg-moves with implicit width. */
40 static int preg_sizes_v10[] = {
41 1, /* bz. */
42 1, /* vr. */
43 1, /* pid. */
44 1, /* srs. */
45 2, /* wz. */
46 2, 2, 4,
47 4, 4, 4, 4,
48 4, 4, 4, 4,
49 };
50
51 static inline int dec10_size(unsigned int size)
52 {
53 size++;
54 if (size == 3)
55 size++;
56 return size;
57 }
58
59 static inline void cris_illegal_insn(DisasContext *dc)
60 {
61 qemu_log("illegal insn at pc=%x\n", dc->pc);
62 t_gen_raise_exception(EXCP_BREAK);
63 }
64
65 /* Prefix flag and register are used to handle the more complex
66 addressing modes. */
67 static void cris_set_prefix(DisasContext *dc)
68 {
69 dc->clear_prefix = 0;
70 dc->tb_flags |= PFIX_FLAG;
71 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], PFIX_FLAG);
72
73 /* prefix insns dont clear the x flag. */
74 dc->clear_x = 0;
75 cris_lock_irq(dc);
76 }
77
78 static void crisv10_prepare_memaddr(DisasContext *dc,
79 TCGv addr, unsigned int size)
80 {
81 if (dc->tb_flags & PFIX_FLAG) {
82 tcg_gen_mov_tl(addr, cpu_PR[PR_PREFIX]);
83 } else {
84 tcg_gen_mov_tl(addr, cpu_R[dc->src]);
85 }
86 }
87
88 static unsigned int crisv10_post_memaddr(DisasContext *dc, unsigned int size)
89 {
90 unsigned int insn_len = 0;
91
92 if (dc->tb_flags & PFIX_FLAG) {
93 if (dc->mode == CRISV10_MODE_AUTOINC) {
94 tcg_gen_mov_tl(cpu_R[dc->src], cpu_PR[PR_PREFIX]);
95 }
96 } else {
97 if (dc->mode == CRISV10_MODE_AUTOINC) {
98 if (dc->src == 15) {
99 insn_len += size & ~1;
100 } else {
101 tcg_gen_addi_tl(cpu_R[dc->src], cpu_R[dc->src], size);
102 }
103 }
104 }
105 return insn_len;
106 }
107
108 static int dec10_prep_move_m(DisasContext *dc, int s_ext, int memsize,
109 TCGv dst)
110 {
111 unsigned int rs;
112 uint32_t imm;
113 int is_imm;
114 int insn_len = 0;
115
116 rs = dc->src;
117 is_imm = rs == 15 && !(dc->tb_flags & PFIX_FLAG);
118 LOG_DIS("rs=%d rd=%d is_imm=%d mode=%d pfix=%d\n",
119 rs, dc->dst, is_imm, dc->mode, dc->tb_flags & PFIX_FLAG);
120
121 /* Load [$rs] onto T1. */
122 if (is_imm) {
123 if (memsize != 4) {
124 if (s_ext) {
125 if (memsize == 1)
126 imm = ldsb_code(dc->pc + 2);
127 else
128 imm = ldsw_code(dc->pc + 2);
129 } else {
130 if (memsize == 1)
131 imm = ldub_code(dc->pc + 2);
132 else
133 imm = lduw_code(dc->pc + 2);
134 }
135 } else
136 imm = ldl_code(dc->pc + 2);
137
138 tcg_gen_movi_tl(dst, imm);
139
140 if (dc->mode == CRISV10_MODE_AUTOINC) {
141 insn_len += memsize;
142 if (memsize == 1)
143 insn_len++;
144 tcg_gen_addi_tl(cpu_R[15], cpu_R[15], insn_len);
145 }
146 } else {
147 TCGv addr;
148
149 addr = tcg_temp_new();
150 cris_flush_cc_state(dc);
151 crisv10_prepare_memaddr(dc, addr, memsize);
152 gen_load(dc, dst, addr, memsize, 0);
153 if (s_ext)
154 t_gen_sext(dst, dst, memsize);
155 else
156 t_gen_zext(dst, dst, memsize);
157 insn_len += crisv10_post_memaddr(dc, memsize);
158 tcg_temp_free(addr);
159 }
160
161 if (dc->mode == CRISV10_MODE_INDIRECT && (dc->tb_flags & PFIX_FLAG)) {
162 dc->dst = dc->src;
163 }
164 return insn_len;
165 }
166
167 static unsigned int dec10_quick_imm(DisasContext *dc)
168 {
169 int32_t imm, simm;
170 int op;
171
172 /* sign extend. */
173 imm = dc->ir & ((1 << 6) - 1);
174 simm = (int8_t) (imm << 2);
175 simm >>= 2;
176 switch (dc->opcode) {
177 case CRISV10_QIMM_BDAP_R0:
178 case CRISV10_QIMM_BDAP_R1:
179 case CRISV10_QIMM_BDAP_R2:
180 case CRISV10_QIMM_BDAP_R3:
181 simm = (int8_t)dc->ir;
182 LOG_DIS("bdap %d $r%d\n", simm, dc->dst);
183 LOG_DIS("pc=%x mode=%x quickimm %d r%d r%d\n",
184 dc->pc, dc->mode, dc->opcode, dc->src, dc->dst);
185 cris_set_prefix(dc);
186 if (dc->dst == 15) {
187 tcg_gen_movi_tl(cpu_PR[PR_PREFIX], dc->pc + 2 + simm);
188 } else {
189 tcg_gen_addi_tl(cpu_PR[PR_PREFIX], cpu_R[dc->dst], simm);
190 }
191 break;
192
193 case CRISV10_QIMM_MOVEQ:
194 LOG_DIS("moveq %d, $r%d\n", simm, dc->dst);
195
196 cris_cc_mask(dc, CC_MASK_NZVC);
197 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst],
198 cpu_R[dc->dst], tcg_const_tl(simm), 4);
199 break;
200 case CRISV10_QIMM_CMPQ:
201 LOG_DIS("cmpq %d, $r%d\n", simm, dc->dst);
202
203 cris_cc_mask(dc, CC_MASK_NZVC);
204 cris_alu(dc, CC_OP_CMP, cpu_R[dc->dst],
205 cpu_R[dc->dst], tcg_const_tl(simm), 4);
206 break;
207 case CRISV10_QIMM_ADDQ:
208 LOG_DIS("addq %d, $r%d\n", imm, dc->dst);
209
210 cris_cc_mask(dc, CC_MASK_NZVC);
211 cris_alu(dc, CC_OP_ADD, cpu_R[dc->dst],
212 cpu_R[dc->dst], tcg_const_tl(imm), 4);
213 break;
214 case CRISV10_QIMM_ANDQ:
215 LOG_DIS("andq %d, $r%d\n", simm, dc->dst);
216
217 cris_cc_mask(dc, CC_MASK_NZVC);
218 cris_alu(dc, CC_OP_AND, cpu_R[dc->dst],
219 cpu_R[dc->dst], tcg_const_tl(simm), 4);
220 break;
221 case CRISV10_QIMM_ASHQ:
222 LOG_DIS("ashq %d, $r%d\n", simm, dc->dst);
223
224 cris_cc_mask(dc, CC_MASK_NZVC);
225 op = imm & (1 << 5);
226 imm &= 0x1f;
227 if (op) {
228 cris_alu(dc, CC_OP_ASR, cpu_R[dc->dst],
229 cpu_R[dc->dst], tcg_const_tl(imm), 4);
230 } else {
231 /* BTST */
232 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
233 gen_helper_btst(cpu_PR[PR_CCS], cpu_R[dc->dst],
234 tcg_const_tl(imm), cpu_PR[PR_CCS]);
235 }
236 break;
237 case CRISV10_QIMM_LSHQ:
238 LOG_DIS("lshq %d, $r%d\n", simm, dc->dst);
239
240 op = CC_OP_LSL;
241 if (imm & (1 << 5)) {
242 op = CC_OP_LSR;
243 }
244 imm &= 0x1f;
245 cris_cc_mask(dc, CC_MASK_NZVC);
246 cris_alu(dc, op, cpu_R[dc->dst],
247 cpu_R[dc->dst], tcg_const_tl(imm), 4);
248 break;
249 case CRISV10_QIMM_SUBQ:
250 LOG_DIS("subq %d, $r%d\n", imm, dc->dst);
251
252 cris_cc_mask(dc, CC_MASK_NZVC);
253 cris_alu(dc, CC_OP_SUB, cpu_R[dc->dst],
254 cpu_R[dc->dst], tcg_const_tl(imm), 4);
255 break;
256 case CRISV10_QIMM_ORQ:
257 LOG_DIS("andq %d, $r%d\n", simm, dc->dst);
258
259 cris_cc_mask(dc, CC_MASK_NZVC);
260 cris_alu(dc, CC_OP_OR, cpu_R[dc->dst],
261 cpu_R[dc->dst], tcg_const_tl(simm), 4);
262 break;
263
264 case CRISV10_QIMM_BCC_R0:
265 if (!dc->ir) {
266 cpu_abort(dc->env, "opcode zero\n");
267 }
268 case CRISV10_QIMM_BCC_R1:
269 case CRISV10_QIMM_BCC_R2:
270 case CRISV10_QIMM_BCC_R3:
271 imm = dc->ir & 0xff;
272 /* bit 0 is a sign bit. */
273 if (imm & 1) {
274 imm |= 0xffffff00; /* sign extend. */
275 imm &= ~1; /* get rid of the sign bit. */
276 }
277 imm += 2;
278 LOG_DIS("b%s %d\n", cc_name(dc->cond), imm);
279
280 cris_cc_mask(dc, 0);
281 cris_prepare_cc_branch(dc, imm, dc->cond);
282 break;
283
284 default:
285 LOG_DIS("pc=%x mode=%x quickimm %d r%d r%d\n",
286 dc->pc, dc->mode, dc->opcode, dc->src, dc->dst);
287 cpu_abort(dc->env, "Unhandled quickimm\n");
288 break;
289 }
290 return 2;
291 }
292
293 static unsigned int dec10_setclrf(DisasContext *dc)
294 {
295 uint32_t flags;
296 unsigned int set = ~dc->opcode & 1;
297
298 flags = EXTRACT_FIELD(dc->ir, 0, 3)
299 | (EXTRACT_FIELD(dc->ir, 12, 15) << 4);
300 LOG_DIS("%s set=%d flags=%x\n", __func__, set, flags);
301
302
303 if (flags & X_FLAG) {
304 dc->flagx_known = 1;
305 if (set)
306 dc->flags_x = X_FLAG;
307 else
308 dc->flags_x = 0;
309 }
310
311 cris_evaluate_flags (dc);
312 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
313 cris_update_cc_x(dc);
314 tcg_gen_movi_tl(cc_op, dc->cc_op);
315
316 if (set) {
317 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags);
318 } else {
319 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~flags);
320 }
321
322 dc->flags_uptodate = 1;
323 dc->clear_x = 0;
324 cris_lock_irq(dc);
325 return 2;
326 }
327
328 static inline void dec10_reg_prep_sext(DisasContext *dc, int size, int sext,
329 TCGv dd, TCGv ds, TCGv sd, TCGv ss)
330 {
331 if (sext) {
332 t_gen_sext(dd, sd, size);
333 t_gen_sext(ds, ss, size);
334 } else {
335 t_gen_zext(dd, sd, size);
336 t_gen_zext(ds, ss, size);
337 }
338 }
339
340 static void dec10_reg_alu(DisasContext *dc, int op, int size, int sext)
341 {
342 TCGv t[2];
343
344 t[0] = tcg_temp_new();
345 t[1] = tcg_temp_new();
346 dec10_reg_prep_sext(dc, size, sext,
347 t[0], t[1], cpu_R[dc->dst], cpu_R[dc->src]);
348
349 if (op == CC_OP_LSL || op == CC_OP_LSR || op == CC_OP_ASR) {
350 tcg_gen_andi_tl(t[1], t[1], 63);
351 }
352
353 assert(dc->dst != 15);
354 cris_alu(dc, op, cpu_R[dc->dst], t[0], t[1], size);
355 tcg_temp_free(t[0]);
356 tcg_temp_free(t[1]);
357 }
358
359 static void dec10_reg_bound(DisasContext *dc, int size)
360 {
361 TCGv t;
362
363 t = tcg_temp_local_new();
364 t_gen_zext(t, cpu_R[dc->src], size);
365 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
366 tcg_temp_free(t);
367 }
368
369 static void dec10_reg_mul(DisasContext *dc, int size, int sext)
370 {
371 int op = sext ? CC_OP_MULS : CC_OP_MULU;
372 TCGv t[2];
373
374 t[0] = tcg_temp_new();
375 t[1] = tcg_temp_new();
376 dec10_reg_prep_sext(dc, size, sext,
377 t[0], t[1], cpu_R[dc->dst], cpu_R[dc->src]);
378
379 cris_alu(dc, op, cpu_R[dc->dst], t[0], t[1], 4);
380
381 tcg_temp_free(t[0]);
382 tcg_temp_free(t[1]);
383 }
384
385
386 static void dec10_reg_movs(DisasContext *dc)
387 {
388 int size = (dc->size & 1) + 1;
389 TCGv t;
390
391 LOG_DIS("movx.%d $r%d, $r%d\n", size, dc->src, dc->dst);
392 cris_cc_mask(dc, CC_MASK_NZVC);
393
394 t = tcg_temp_new();
395 if (dc->ir & 32)
396 t_gen_sext(t, cpu_R[dc->src], size);
397 else
398 t_gen_zext(t, cpu_R[dc->src], size);
399
400 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
401 tcg_temp_free(t);
402 }
403
404 static void dec10_reg_alux(DisasContext *dc, int op)
405 {
406 int size = (dc->size & 1) + 1;
407 TCGv t;
408
409 LOG_DIS("movx.%d $r%d, $r%d\n", size, dc->src, dc->dst);
410 cris_cc_mask(dc, CC_MASK_NZVC);
411
412 t = tcg_temp_new();
413 if (dc->ir & 32)
414 t_gen_sext(t, cpu_R[dc->src], size);
415 else
416 t_gen_zext(t, cpu_R[dc->src], size);
417
418 cris_alu(dc, op, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
419 tcg_temp_free(t);
420 }
421
422 static void dec10_reg_mov_pr(DisasContext *dc)
423 {
424 LOG_DIS("move p%d r%d sz=%d\n", dc->dst, dc->src, preg_sizes_v10[dc->dst]);
425 cris_lock_irq(dc);
426 if (dc->src == 15) {
427 tcg_gen_mov_tl(env_btarget, cpu_PR[dc->dst]);
428 cris_prepare_jmp(dc, JMP_INDIRECT);
429 return;
430 }
431 if (dc->dst == PR_CCS) {
432 cris_evaluate_flags(dc);
433 }
434 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->src],
435 cpu_R[dc->src], cpu_PR[dc->dst], preg_sizes_v10[dc->dst]);
436 }
437
438 static void dec10_reg_abs(DisasContext *dc)
439 {
440 TCGv t0;
441
442 LOG_DIS("abs $r%u, $r%u\n", dc->src, dc->dst);
443
444 assert(dc->dst != 15);
445 t0 = tcg_temp_new();
446 tcg_gen_sari_tl(t0, cpu_R[dc->src], 31);
447 tcg_gen_xor_tl(cpu_R[dc->dst], cpu_R[dc->src], t0);
448 tcg_gen_sub_tl(t0, cpu_R[dc->dst], t0);
449
450 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t0, 4);
451 tcg_temp_free(t0);
452 }
453
454 static void dec10_reg_swap(DisasContext *dc)
455 {
456 TCGv t0;
457
458 LOG_DIS("not $r%d, $r%d\n", dc->src, dc->dst);
459
460 cris_cc_mask(dc, CC_MASK_NZVC);
461 t0 = tcg_temp_new();
462 t_gen_mov_TN_reg(t0, dc->src);
463 if (dc->dst & 8)
464 tcg_gen_not_tl(t0, t0);
465 if (dc->dst & 4)
466 t_gen_swapw(t0, t0);
467 if (dc->dst & 2)
468 t_gen_swapb(t0, t0);
469 if (dc->dst & 1)
470 t_gen_swapr(t0, t0);
471 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->src], cpu_R[dc->src], t0, 4);
472 tcg_temp_free(t0);
473 }
474
475 static void dec10_reg_scc(DisasContext *dc)
476 {
477 int cond = dc->dst;
478
479 LOG_DIS("s%s $r%u\n", cc_name(cond), dc->src);
480
481 if (cond != CC_A)
482 {
483 int l1;
484
485 gen_tst_cc (dc, cpu_R[dc->src], cond);
486 l1 = gen_new_label();
487 tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_R[dc->src], 0, l1);
488 tcg_gen_movi_tl(cpu_R[dc->src], 1);
489 gen_set_label(l1);
490 } else {
491 tcg_gen_movi_tl(cpu_R[dc->src], 1);
492 }
493
494 cris_cc_mask(dc, 0);
495 }
496
497 static unsigned int dec10_reg(DisasContext *dc)
498 {
499 TCGv t;
500 unsigned int insn_len = 2;
501 unsigned int size = dec10_size(dc->size);
502 unsigned int tmp;
503
504 if (dc->size != 3) {
505 switch (dc->opcode) {
506 case CRISV10_REG_MOVE_R:
507 LOG_DIS("move.%d $r%d, $r%d\n", dc->size, dc->src, dc->dst);
508 cris_cc_mask(dc, CC_MASK_NZVC);
509 dec10_reg_alu(dc, CC_OP_MOVE, size, 0);
510 if (dc->dst == 15) {
511 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
512 cris_prepare_jmp(dc, JMP_INDIRECT);
513 dc->delayed_branch = 1;
514 }
515 break;
516 case CRISV10_REG_MOVX:
517 cris_cc_mask(dc, CC_MASK_NZVC);
518 dec10_reg_movs(dc);
519 break;
520 case CRISV10_REG_ADDX:
521 cris_cc_mask(dc, CC_MASK_NZVC);
522 dec10_reg_alux(dc, CC_OP_ADD);
523 break;
524 case CRISV10_REG_SUBX:
525 cris_cc_mask(dc, CC_MASK_NZVC);
526 dec10_reg_alux(dc, CC_OP_SUB);
527 break;
528 case CRISV10_REG_ADD:
529 LOG_DIS("add $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
530 cris_cc_mask(dc, CC_MASK_NZVC);
531 dec10_reg_alu(dc, CC_OP_ADD, size, 0);
532 break;
533 case CRISV10_REG_SUB:
534 LOG_DIS("sub $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
535 cris_cc_mask(dc, CC_MASK_NZVC);
536 dec10_reg_alu(dc, CC_OP_SUB, size, 0);
537 break;
538 case CRISV10_REG_CMP:
539 LOG_DIS("cmp $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
540 cris_cc_mask(dc, CC_MASK_NZVC);
541 dec10_reg_alu(dc, CC_OP_CMP, size, 0);
542 break;
543 case CRISV10_REG_BOUND:
544 LOG_DIS("bound $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
545 cris_cc_mask(dc, CC_MASK_NZVC);
546 dec10_reg_bound(dc, size);
547 break;
548 case CRISV10_REG_AND:
549 LOG_DIS("and $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
550 cris_cc_mask(dc, CC_MASK_NZVC);
551 dec10_reg_alu(dc, CC_OP_AND, size, 0);
552 break;
553 case CRISV10_REG_ADDI:
554 if (dc->src == 15) {
555 /* nop. */
556 return 2;
557 }
558 t = tcg_temp_new();
559 LOG_DIS("addi r%d r%d size=%d\n", dc->src, dc->dst, dc->size);
560 tcg_gen_shli_tl(t, cpu_R[dc->dst], dc->size & 3);
561 tcg_gen_add_tl(cpu_R[dc->src], cpu_R[dc->src], t);
562 tcg_temp_free(t);
563 break;
564 case CRISV10_REG_LSL:
565 LOG_DIS("lsl $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
566 cris_cc_mask(dc, CC_MASK_NZVC);
567 dec10_reg_alu(dc, CC_OP_LSL, size, 0);
568 break;
569 case CRISV10_REG_LSR:
570 LOG_DIS("lsr $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
571 cris_cc_mask(dc, CC_MASK_NZVC);
572 dec10_reg_alu(dc, CC_OP_LSR, size, 0);
573 break;
574 case CRISV10_REG_ASR:
575 LOG_DIS("asr $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
576 cris_cc_mask(dc, CC_MASK_NZVC);
577 dec10_reg_alu(dc, CC_OP_ASR, size, 1);
578 break;
579 case CRISV10_REG_OR:
580 LOG_DIS("or $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
581 cris_cc_mask(dc, CC_MASK_NZVC);
582 dec10_reg_alu(dc, CC_OP_OR, size, 0);
583 break;
584 case CRISV10_REG_NEG:
585 LOG_DIS("neg $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
586 cris_cc_mask(dc, CC_MASK_NZVC);
587 dec10_reg_alu(dc, CC_OP_NEG, size, 0);
588 break;
589 case CRISV10_REG_BIAP:
590 LOG_DIS("BIAP pc=%x reg %d r%d r%d size=%d\n", dc->pc,
591 dc->opcode, dc->src, dc->dst, size);
592 switch (size) {
593 case 4: tmp = 2; break;
594 case 2: tmp = 1; break;
595 case 1: tmp = 0; break;
596 default:
597 cpu_abort(dc->env, "Unhandled BIAP");
598 break;
599 }
600
601 t = tcg_temp_new();
602 tcg_gen_shli_tl(t, cpu_R[dc->dst], tmp);
603 if (dc->src == 15) {
604 tcg_gen_addi_tl(cpu_PR[PR_PREFIX], t, ((dc->pc +2)| 1) + 1);
605 } else {
606 tcg_gen_add_tl(cpu_PR[PR_PREFIX], cpu_R[dc->src], t);
607 }
608 tcg_temp_free(t);
609 cris_set_prefix(dc);
610 break;
611
612 default:
613 LOG_DIS("pc=%x reg %d r%d r%d\n", dc->pc,
614 dc->opcode, dc->src, dc->dst);
615 cpu_abort(dc->env, "Unhandled opcode");
616 break;
617 }
618 } else {
619 switch (dc->opcode) {
620 case CRISV10_REG_MOVX:
621 cris_cc_mask(dc, CC_MASK_NZVC);
622 dec10_reg_movs(dc);
623 break;
624 case CRISV10_REG_ADDX:
625 cris_cc_mask(dc, CC_MASK_NZVC);
626 dec10_reg_alux(dc, CC_OP_ADD);
627 break;
628 case CRISV10_REG_SUBX:
629 cris_cc_mask(dc, CC_MASK_NZVC);
630 dec10_reg_alux(dc, CC_OP_SUB);
631 break;
632 case CRISV10_REG_MOVE_SPR_R:
633 cris_evaluate_flags(dc);
634 cris_cc_mask(dc, 0);
635 dec10_reg_mov_pr(dc);
636 break;
637 case CRISV10_REG_MOVE_R_SPR:
638 LOG_DIS("move r%d p%d\n", dc->src, dc->dst);
639 cris_evaluate_flags(dc);
640 if (dc->src != 11) /* fast for srp. */
641 dc->cpustate_changed = 1;
642 t_gen_mov_preg_TN(dc, dc->dst, cpu_R[dc->src]);
643 break;
644 case CRISV10_REG_SETF:
645 case CRISV10_REG_CLEARF:
646 dec10_setclrf(dc);
647 break;
648 case CRISV10_REG_SWAP:
649 dec10_reg_swap(dc);
650 break;
651 case CRISV10_REG_ABS:
652 cris_cc_mask(dc, CC_MASK_NZVC);
653 dec10_reg_abs(dc);
654 break;
655 case CRISV10_REG_LZ:
656 LOG_DIS("lz $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
657 cris_cc_mask(dc, CC_MASK_NZVC);
658 dec10_reg_alu(dc, CC_OP_LZ, 4, 0);
659 break;
660 case CRISV10_REG_XOR:
661 LOG_DIS("xor $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
662 cris_cc_mask(dc, CC_MASK_NZVC);
663 dec10_reg_alu(dc, CC_OP_XOR, 4, 0);
664 break;
665 case CRISV10_REG_BTST:
666 LOG_DIS("btst $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
667 cris_cc_mask(dc, CC_MASK_NZVC);
668 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
669 gen_helper_btst(cpu_PR[PR_CCS], cpu_R[dc->dst],
670 cpu_R[dc->src], cpu_PR[PR_CCS]);
671 break;
672 case CRISV10_REG_DSTEP:
673 LOG_DIS("dstep $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
674 cris_cc_mask(dc, CC_MASK_NZVC);
675 cris_alu(dc, CC_OP_DSTEP, cpu_R[dc->dst],
676 cpu_R[dc->dst], cpu_R[dc->src], 4);
677 break;
678 case CRISV10_REG_MSTEP:
679 LOG_DIS("mstep $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
680 cris_evaluate_flags(dc);
681 cris_cc_mask(dc, CC_MASK_NZVC);
682 cris_alu(dc, CC_OP_MSTEP, cpu_R[dc->dst],
683 cpu_R[dc->dst], cpu_R[dc->src], 4);
684 break;
685 case CRISV10_REG_SCC:
686 dec10_reg_scc(dc);
687 break;
688 default:
689 LOG_DIS("pc=%x reg %d r%d r%d\n", dc->pc,
690 dc->opcode, dc->src, dc->dst);
691 cpu_abort(dc->env, "Unhandled opcode");
692 break;
693 }
694 }
695 return insn_len;
696 }
697
698 static unsigned int dec10_ind_move_m_r(DisasContext *dc, unsigned int size)
699 {
700 unsigned int insn_len = 2;
701 TCGv t;
702
703 LOG_DIS("%s: move.%d [$r%d], $r%d\n", __func__,
704 size, dc->src, dc->dst);
705
706 cris_cc_mask(dc, CC_MASK_NZVC);
707 t = tcg_temp_new();
708 insn_len += dec10_prep_move_m(dc, 0, size, t);
709 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t, size);
710 if (dc->dst == 15) {
711 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
712 cris_prepare_jmp(dc, JMP_INDIRECT);
713 dc->delayed_branch = 1;
714 return insn_len;
715 }
716
717 tcg_temp_free(t);
718 return insn_len;
719 }
720
721 static unsigned int dec10_ind_move_r_m(DisasContext *dc, unsigned int size)
722 {
723 unsigned int insn_len = 2;
724 TCGv addr;
725
726 LOG_DIS("move.%d $r%d, [$r%d]\n", dc->size, dc->src, dc->dst);
727 addr = tcg_temp_new();
728 crisv10_prepare_memaddr(dc, addr, size);
729 gen_store(dc, addr, cpu_R[dc->dst], size);
730 insn_len += crisv10_post_memaddr(dc, size);
731
732 return insn_len;
733 }
734
735 static unsigned int dec10_ind_move_m_pr(DisasContext *dc)
736 {
737 unsigned int insn_len = 2, rd = dc->dst;
738 TCGv t, addr;
739
740 LOG_DIS("move.%d $p%d, [$r%d]\n", dc->size, dc->dst, dc->src);
741 cris_lock_irq(dc);
742
743 addr = tcg_temp_new();
744 t = tcg_temp_new();
745 insn_len += dec10_prep_move_m(dc, 0, 4, t);
746 if (rd == 15) {
747 tcg_gen_mov_tl(env_btarget, t);
748 cris_prepare_jmp(dc, JMP_INDIRECT);
749 dc->delayed_branch = 1;
750 return insn_len;
751 }
752
753 tcg_gen_mov_tl(cpu_PR[rd], t);
754 dc->cpustate_changed = 1;
755 tcg_temp_free(addr);
756 tcg_temp_free(t);
757 return insn_len;
758 }
759
760 static unsigned int dec10_ind_move_pr_m(DisasContext *dc)
761 {
762 unsigned int insn_len = 2, size = preg_sizes_v10[dc->dst];
763 TCGv addr, t0;
764
765 LOG_DIS("move.%d $p%d, [$r%d]\n", dc->size, dc->dst, dc->src);
766
767 addr = tcg_temp_new();
768 crisv10_prepare_memaddr(dc, addr, size);
769 if (dc->dst == PR_CCS) {
770 t0 = tcg_temp_new();
771 cris_evaluate_flags(dc);
772 tcg_gen_andi_tl(t0, cpu_PR[PR_CCS], ~PFIX_FLAG);
773 gen_store(dc, addr, t0, size);
774 tcg_temp_free(t0);
775 } else {
776 gen_store(dc, addr, cpu_PR[dc->dst], size);
777 }
778 t0 = tcg_temp_new();
779 insn_len += crisv10_post_memaddr(dc, size);
780 cris_lock_irq(dc);
781
782 return insn_len;
783 }
784
785 static void dec10_movem_r_m(DisasContext *dc)
786 {
787 int i, pfix = dc->tb_flags & PFIX_FLAG;
788 TCGv addr, t0;
789
790 LOG_DIS("%s r%d, [r%d] pi=%d ir=%x\n", __func__,
791 dc->dst, dc->src, dc->postinc, dc->ir);
792
793 addr = tcg_temp_new();
794 t0 = tcg_temp_new();
795 crisv10_prepare_memaddr(dc, addr, 4);
796 tcg_gen_mov_tl(t0, addr);
797 for (i = dc->dst; i >= 0; i--) {
798 if ((pfix && dc->mode == CRISV10_MODE_AUTOINC) && dc->src == i) {
799 gen_store(dc, addr, t0, 4);
800 } else {
801 gen_store(dc, addr, cpu_R[i], 4);
802 }
803 tcg_gen_addi_tl(addr, addr, 4);
804 }
805
806 if (pfix && dc->mode == CRISV10_MODE_AUTOINC) {
807 tcg_gen_mov_tl(cpu_R[dc->src], t0);
808 }
809
810 if (!pfix && dc->mode == CRISV10_MODE_AUTOINC) {
811 tcg_gen_mov_tl(cpu_R[dc->src], addr);
812 }
813 tcg_temp_free(addr);
814 tcg_temp_free(t0);
815 }
816
817 static void dec10_movem_m_r(DisasContext *dc)
818 {
819 int i, pfix = dc->tb_flags & PFIX_FLAG;
820 TCGv addr, t0;
821
822 LOG_DIS("%s [r%d], r%d pi=%d ir=%x\n", __func__,
823 dc->src, dc->dst, dc->postinc, dc->ir);
824
825 addr = tcg_temp_new();
826 t0 = tcg_temp_new();
827 crisv10_prepare_memaddr(dc, addr, 4);
828 tcg_gen_mov_tl(t0, addr);
829 for (i = dc->dst; i >= 0; i--) {
830 gen_load(dc, cpu_R[i], addr, 4, 0);
831 tcg_gen_addi_tl(addr, addr, 4);
832 }
833
834 if (pfix && dc->mode == CRISV10_MODE_AUTOINC) {
835 tcg_gen_mov_tl(cpu_R[dc->src], t0);
836 }
837
838 if (!pfix && dc->mode == CRISV10_MODE_AUTOINC) {
839 tcg_gen_mov_tl(cpu_R[dc->src], addr);
840 }
841 tcg_temp_free(addr);
842 tcg_temp_free(t0);
843 }
844
845 static int dec10_ind_alu(DisasContext *dc, int op, unsigned int size)
846 {
847 int insn_len = 0;
848 int rd = dc->dst;
849 TCGv t[2];
850
851 cris_alu_m_alloc_temps(t);
852 insn_len += dec10_prep_move_m(dc, 0, size, t[0]);
853 cris_alu(dc, op, cpu_R[dc->dst], cpu_R[rd], t[0], size);
854 if (dc->dst == 15) {
855 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
856 cris_prepare_jmp(dc, JMP_INDIRECT);
857 dc->delayed_branch = 1;
858 return insn_len;
859 }
860
861 cris_alu_m_free_temps(t);
862
863 return insn_len;
864 }
865
866 static int dec10_ind_bound(DisasContext *dc, unsigned int size)
867 {
868 int insn_len = 0;
869 int rd = dc->dst;
870 TCGv t;
871
872 t = tcg_temp_local_new();
873 insn_len += dec10_prep_move_m(dc, 0, size, t);
874 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->dst], cpu_R[rd], t, 4);
875 if (dc->dst == 15) {
876 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
877 cris_prepare_jmp(dc, JMP_INDIRECT);
878 dc->delayed_branch = 1;
879 return insn_len;
880 }
881
882 tcg_temp_free(t);
883 return insn_len;
884 }
885
886 static int dec10_alux_m(DisasContext *dc, int op)
887 {
888 unsigned int size = (dc->size & 1) ? 2 : 1;
889 unsigned int sx = !!(dc->size & 2);
890 int insn_len = 2;
891 int rd = dc->dst;
892 TCGv t;
893
894 LOG_DIS("addx size=%d sx=%d op=%d %d\n", size, sx, dc->src, dc->dst);
895
896 t = tcg_temp_new();
897
898 cris_cc_mask(dc, CC_MASK_NZVC);
899 insn_len += dec10_prep_move_m(dc, sx, size, t);
900 cris_alu(dc, op, cpu_R[dc->dst], cpu_R[rd], t, 4);
901 if (dc->dst == 15) {
902 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
903 cris_prepare_jmp(dc, JMP_INDIRECT);
904 dc->delayed_branch = 1;
905 return insn_len;
906 }
907
908 tcg_temp_free(t);
909 return insn_len;
910 }
911
912 static int dec10_dip(DisasContext *dc)
913 {
914 int insn_len = 2;
915 uint32_t imm;
916
917 LOG_DIS("dip pc=%x opcode=%d r%d r%d\n",
918 dc->pc, dc->opcode, dc->src, dc->dst);
919 if (dc->src == 15) {
920 imm = ldl_code(dc->pc + 2);
921 tcg_gen_movi_tl(cpu_PR[PR_PREFIX], imm);
922 if (dc->postinc)
923 insn_len += 4;
924 tcg_gen_addi_tl(cpu_R[15], cpu_R[15], insn_len - 2);
925 } else {
926 gen_load(dc, cpu_PR[PR_PREFIX], cpu_R[dc->src], 4, 0);
927 if (dc->postinc)
928 tcg_gen_addi_tl(cpu_R[dc->src], cpu_R[dc->src], 4);
929 }
930
931 cris_set_prefix(dc);
932 return insn_len;
933 }
934
935 static int dec10_bdap_m(DisasContext *dc, int size)
936 {
937 int insn_len = 2;
938 int rd = dc->dst;
939
940 LOG_DIS("bdap_m pc=%x opcode=%d r%d r%d sz=%d\n",
941 dc->pc, dc->opcode, dc->src, dc->dst, size);
942
943 assert(dc->dst != 15);
944 #if 0
945 /* 8bit embedded offset? */
946 if (!dc->postinc && (dc->ir & (1 << 11))) {
947 int simm = dc->ir & 0xff;
948
949 /* cpu_abort(dc->env, "Unhandled opcode"); */
950 /* sign extended. */
951 simm = (int8_t)simm;
952
953 tcg_gen_addi_tl(cpu_PR[PR_PREFIX], cpu_R[dc->dst], simm);
954
955 cris_set_prefix(dc);
956 return insn_len;
957 }
958 #endif
959 /* Now the rest of the modes are truely indirect. */
960 insn_len += dec10_prep_move_m(dc, 1, size, cpu_PR[PR_PREFIX]);
961 tcg_gen_add_tl(cpu_PR[PR_PREFIX], cpu_PR[PR_PREFIX], cpu_R[rd]);
962 cris_set_prefix(dc);
963 return insn_len;
964 }
965
966 static unsigned int dec10_ind(DisasContext *dc)
967 {
968 unsigned int insn_len = 2;
969 unsigned int size = dec10_size(dc->size);
970 uint32_t imm;
971 int32_t simm;
972 TCGv t[2];
973
974 if (dc->size != 3) {
975 switch (dc->opcode) {
976 case CRISV10_IND_MOVE_M_R:
977 return dec10_ind_move_m_r(dc, size);
978 break;
979 case CRISV10_IND_MOVE_R_M:
980 return dec10_ind_move_r_m(dc, size);
981 break;
982 case CRISV10_IND_CMP:
983 LOG_DIS("cmp size=%d op=%d %d\n", size, dc->src, dc->dst);
984 cris_cc_mask(dc, CC_MASK_NZVC);
985 insn_len += dec10_ind_alu(dc, CC_OP_CMP, size);
986 break;
987 case CRISV10_IND_TEST:
988 LOG_DIS("test size=%d op=%d %d\n", size, dc->src, dc->dst);
989
990 cris_evaluate_flags(dc);
991 cris_cc_mask(dc, CC_MASK_NZVC);
992 cris_alu_m_alloc_temps(t);
993 insn_len += dec10_prep_move_m(dc, 0, size, t[0]);
994 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3);
995 cris_alu(dc, CC_OP_CMP, cpu_R[dc->dst],
996 t[0], tcg_const_tl(0), size);
997 cris_alu_m_free_temps(t);
998 break;
999 case CRISV10_IND_ADD:
1000 LOG_DIS("add size=%d op=%d %d\n", size, dc->src, dc->dst);
1001 cris_cc_mask(dc, CC_MASK_NZVC);
1002 insn_len += dec10_ind_alu(dc, CC_OP_ADD, size);
1003 break;
1004 case CRISV10_IND_SUB:
1005 LOG_DIS("sub size=%d op=%d %d\n", size, dc->src, dc->dst);
1006 cris_cc_mask(dc, CC_MASK_NZVC);
1007 insn_len += dec10_ind_alu(dc, CC_OP_SUB, size);
1008 break;
1009 case CRISV10_IND_BOUND:
1010 LOG_DIS("bound size=%d op=%d %d\n", size, dc->src, dc->dst);
1011 cris_cc_mask(dc, CC_MASK_NZVC);
1012 insn_len += dec10_ind_bound(dc, size);
1013 break;
1014 case CRISV10_IND_AND:
1015 LOG_DIS("and size=%d op=%d %d\n", size, dc->src, dc->dst);
1016 cris_cc_mask(dc, CC_MASK_NZVC);
1017 insn_len += dec10_ind_alu(dc, CC_OP_AND, size);
1018 break;
1019 case CRISV10_IND_OR:
1020 LOG_DIS("or size=%d op=%d %d\n", size, dc->src, dc->dst);
1021 cris_cc_mask(dc, CC_MASK_NZVC);
1022 insn_len += dec10_ind_alu(dc, CC_OP_OR, size);
1023 break;
1024 case CRISV10_IND_MOVX:
1025 insn_len = dec10_alux_m(dc, CC_OP_MOVE);
1026 break;
1027 case CRISV10_IND_ADDX:
1028 insn_len = dec10_alux_m(dc, CC_OP_ADD);
1029 break;
1030 case CRISV10_IND_SUBX:
1031 insn_len = dec10_alux_m(dc, CC_OP_SUB);
1032 break;
1033 case CRISV10_IND_CMPX:
1034 insn_len = dec10_alux_m(dc, CC_OP_CMP);
1035 break;
1036 case CRISV10_IND_MUL:
1037 /* This is a reg insn coded in the mem indir space. */
1038 LOG_DIS("mul pc=%x opcode=%d\n", dc->pc, dc->opcode);
1039 cris_cc_mask(dc, CC_MASK_NZVC);
1040 dec10_reg_mul(dc, size, dc->ir & (1 << 10));
1041 break;
1042 case CRISV10_IND_BDAP_M:
1043 insn_len = dec10_bdap_m(dc, size);
1044 break;
1045 default:
1046 LOG_DIS("pc=%x var-ind.%d %d r%d r%d\n",
1047 dc->pc, size, dc->opcode, dc->src, dc->dst);
1048 cpu_abort(dc->env, "Unhandled opcode");
1049 break;
1050 }
1051 return insn_len;
1052 }
1053
1054 switch (dc->opcode) {
1055 case CRISV10_IND_MOVE_M_SPR:
1056 insn_len = dec10_ind_move_m_pr(dc);
1057 break;
1058 case CRISV10_IND_MOVE_SPR_M:
1059 insn_len = dec10_ind_move_pr_m(dc);
1060 break;
1061 case CRISV10_IND_JUMP_M:
1062 if (dc->src == 15) {
1063 LOG_DIS("jump.%d %d r%d r%d direct\n", size,
1064 dc->opcode, dc->src, dc->dst);
1065 imm = ldl_code(dc->pc + 2);
1066 if (dc->mode == CRISV10_MODE_AUTOINC)
1067 insn_len += size;
1068
1069 t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len));
1070 dc->jmp_pc = imm;
1071 cris_prepare_jmp(dc, JMP_DIRECT);
1072 dc->delayed_branch--; /* v10 has no dslot here. */
1073 } else {
1074 if (dc->dst == 14) {
1075 LOG_DIS("break %d\n", dc->src);
1076 cris_evaluate_flags(dc);
1077 tcg_gen_movi_tl(env_pc, dc->pc + 2);
1078 t_gen_raise_exception(EXCP_BREAK);
1079 dc->is_jmp = DISAS_UPDATE;
1080 return insn_len;
1081 }
1082 LOG_DIS("%d: jump.%d %d r%d r%d\n", __LINE__, size,
1083 dc->opcode, dc->src, dc->dst);
1084 t[0] = tcg_temp_new();
1085 t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len));
1086 crisv10_prepare_memaddr(dc, t[0], size);
1087 gen_load(dc, env_btarget, t[0], 4, 0);
1088 insn_len += crisv10_post_memaddr(dc, size);
1089 cris_prepare_jmp(dc, JMP_INDIRECT);
1090 dc->delayed_branch--; /* v10 has no dslot here. */
1091 tcg_temp_free(t[0]);
1092 }
1093 break;
1094
1095 case CRISV10_IND_MOVEM_R_M:
1096 LOG_DIS("movem_r_m pc=%x opcode=%d r%d r%d\n",
1097 dc->pc, dc->opcode, dc->dst, dc->src);
1098 dec10_movem_r_m(dc);
1099 break;
1100 case CRISV10_IND_MOVEM_M_R:
1101 LOG_DIS("movem_m_r pc=%x opcode=%d\n", dc->pc, dc->opcode);
1102 dec10_movem_m_r(dc);
1103 break;
1104 case CRISV10_IND_JUMP_R:
1105 LOG_DIS("jmp pc=%x opcode=%d r%d r%d\n",
1106 dc->pc, dc->opcode, dc->dst, dc->src);
1107 tcg_gen_mov_tl(env_btarget, cpu_R[dc->src]);
1108 t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len));
1109 cris_prepare_jmp(dc, JMP_INDIRECT);
1110 dc->delayed_branch--; /* v10 has no dslot here. */
1111 break;
1112 case CRISV10_IND_MOVX:
1113 insn_len = dec10_alux_m(dc, CC_OP_MOVE);
1114 break;
1115 case CRISV10_IND_ADDX:
1116 insn_len = dec10_alux_m(dc, CC_OP_ADD);
1117 break;
1118 case CRISV10_IND_SUBX:
1119 insn_len = dec10_alux_m(dc, CC_OP_SUB);
1120 break;
1121 case CRISV10_IND_CMPX:
1122 insn_len = dec10_alux_m(dc, CC_OP_CMP);
1123 break;
1124 case CRISV10_IND_DIP:
1125 insn_len = dec10_dip(dc);
1126 break;
1127 case CRISV10_IND_BCC_M:
1128
1129 cris_cc_mask(dc, 0);
1130 imm = ldsw_code(dc->pc + 2);
1131 simm = (int16_t)imm;
1132 simm += 4;
1133
1134 LOG_DIS("bcc_m: b%s %x\n", cc_name(dc->cond), dc->pc + simm);
1135 cris_prepare_cc_branch(dc, simm, dc->cond);
1136 insn_len = 4;
1137 break;
1138 default:
1139 LOG_DIS("ERROR pc=%x opcode=%d\n", dc->pc, dc->opcode);
1140 cpu_abort(dc->env, "Unhandled opcode");
1141 break;
1142 }
1143
1144 return insn_len;
1145 }
1146
1147 static unsigned int crisv10_decoder(DisasContext *dc)
1148 {
1149 unsigned int insn_len = 2;
1150
1151 if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP)))
1152 tcg_gen_debug_insn_start(dc->pc);
1153
1154 /* Load a halfword onto the instruction register. */
1155 dc->ir = lduw_code(dc->pc);
1156
1157 /* Now decode it. */
1158 dc->opcode = EXTRACT_FIELD(dc->ir, 6, 9);
1159 dc->mode = EXTRACT_FIELD(dc->ir, 10, 11);
1160 dc->src = EXTRACT_FIELD(dc->ir, 0, 3);
1161 dc->size = EXTRACT_FIELD(dc->ir, 4, 5);
1162 dc->cond = dc->dst = EXTRACT_FIELD(dc->ir, 12, 15);
1163 dc->postinc = EXTRACT_FIELD(dc->ir, 10, 10);
1164
1165 dc->clear_prefix = 1;
1166
1167 /* FIXME: What if this insn insn't 2 in length?? */
1168 if (dc->src == 15 || dc->dst == 15)
1169 tcg_gen_movi_tl(cpu_R[15], dc->pc + 2);
1170
1171 switch (dc->mode) {
1172 case CRISV10_MODE_QIMMEDIATE:
1173 insn_len = dec10_quick_imm(dc);
1174 break;
1175 case CRISV10_MODE_REG:
1176 insn_len = dec10_reg(dc);
1177 break;
1178 case CRISV10_MODE_AUTOINC:
1179 case CRISV10_MODE_INDIRECT:
1180 insn_len = dec10_ind(dc);
1181 break;
1182 }
1183
1184 if (dc->clear_prefix && dc->tb_flags & PFIX_FLAG) {
1185 dc->tb_flags &= ~PFIX_FLAG;
1186 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~PFIX_FLAG);
1187 if (dc->tb_flags != dc->tb->flags) {
1188 dc->cpustate_changed = 1;
1189 }
1190 }
1191
1192 /* CRISv10 locks out interrupts on dslots. */
1193 if (dc->delayed_branch == 2) {
1194 cris_lock_irq(dc);
1195 }
1196 return insn_len;
1197 }
1198
1199 static CPUCRISState *cpu_crisv10_init (CPUState *env)
1200 {
1201 int i;
1202
1203 cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
1204 cc_x = tcg_global_mem_new(TCG_AREG0,
1205 offsetof(CPUState, cc_x), "cc_x");
1206 cc_src = tcg_global_mem_new(TCG_AREG0,
1207 offsetof(CPUState, cc_src), "cc_src");
1208 cc_dest = tcg_global_mem_new(TCG_AREG0,
1209 offsetof(CPUState, cc_dest),
1210 "cc_dest");
1211 cc_result = tcg_global_mem_new(TCG_AREG0,
1212 offsetof(CPUState, cc_result),
1213 "cc_result");
1214 cc_op = tcg_global_mem_new(TCG_AREG0,
1215 offsetof(CPUState, cc_op), "cc_op");
1216 cc_size = tcg_global_mem_new(TCG_AREG0,
1217 offsetof(CPUState, cc_size),
1218 "cc_size");
1219 cc_mask = tcg_global_mem_new(TCG_AREG0,
1220 offsetof(CPUState, cc_mask),
1221 "cc_mask");
1222
1223 env_pc = tcg_global_mem_new(TCG_AREG0,
1224 offsetof(CPUState, pc),
1225 "pc");
1226 env_btarget = tcg_global_mem_new(TCG_AREG0,
1227 offsetof(CPUState, btarget),
1228 "btarget");
1229 env_btaken = tcg_global_mem_new(TCG_AREG0,
1230 offsetof(CPUState, btaken),
1231 "btaken");
1232 for (i = 0; i < 16; i++) {
1233 cpu_R[i] = tcg_global_mem_new(TCG_AREG0,
1234 offsetof(CPUState, regs[i]),
1235 regnames_v10[i]);
1236 }
1237 for (i = 0; i < 16; i++) {
1238 cpu_PR[i] = tcg_global_mem_new(TCG_AREG0,
1239 offsetof(CPUState, pregs[i]),
1240 pregnames_v10[i]);
1241 }
1242
1243 return env;
1244 }
1245
QEmu