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audio: don't use 'Yoda conditions'
[qemu/ar7.git] / target-cris / translate_v10.c
blobefb3639a06d3a8297c89b032c01b98b6194feef0
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 static void gen_store_v10_conditional(DisasContext *dc, TCGv addr, TCGv val,
66 unsigned int size, int mem_index)
67 {
68 int l1 = gen_new_label();
69 TCGv taddr = tcg_temp_local_new();
70 TCGv tval = tcg_temp_local_new();
71 TCGv t1 = tcg_temp_local_new();
72 dc->postinc = 0;
73 cris_evaluate_flags(dc);
74
75 tcg_gen_mov_tl(taddr, addr);
76 tcg_gen_mov_tl(tval, val);
77
78 /* Store only if F flag isn't set */
79 tcg_gen_andi_tl(t1, cpu_PR[PR_CCS], F_FLAG_V10);
80 tcg_gen_brcondi_tl(TCG_COND_NE, t1, 0, l1);
81 if (size == 1) {
82 tcg_gen_qemu_st8(tval, taddr, mem_index);
83 } else if (size == 2) {
84 tcg_gen_qemu_st16(tval, taddr, mem_index);
85 } else {
86 tcg_gen_qemu_st32(tval, taddr, mem_index);
87 }
88 gen_set_label(l1);
89 tcg_gen_shri_tl(t1, t1, 1); /* shift F to P position */
90 tcg_gen_or_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], t1); /*P=F*/
91 tcg_temp_free(t1);
92 tcg_temp_free(tval);
93 tcg_temp_free(taddr);
94 }
95
96 static void gen_store_v10(DisasContext *dc, TCGv addr, TCGv val,
97 unsigned int size)
98 {
99 int mem_index = cpu_mmu_index(&dc->cpu->env);
100
101 /* If we get a fault on a delayslot we must keep the jmp state in
102 the cpu-state to be able to re-execute the jmp. */
103 if (dc->delayed_branch == 1) {
104 cris_store_direct_jmp(dc);
105 }
106
107 /* Conditional writes. We only support the kind were X is known
108 at translation time. */
109 if (dc->flagx_known && dc->flags_x) {
110 gen_store_v10_conditional(dc, addr, val, size, mem_index);
111 return;
112 }
113
114 if (size == 1) {
115 tcg_gen_qemu_st8(val, addr, mem_index);
116 } else if (size == 2) {
117 tcg_gen_qemu_st16(val, addr, mem_index);
118 } else {
119 tcg_gen_qemu_st32(val, addr, mem_index);
120 }
121 }
122
123
124 /* Prefix flag and register are used to handle the more complex
125 addressing modes. */
126 static void cris_set_prefix(DisasContext *dc)
127 {
128 dc->clear_prefix = 0;
129 dc->tb_flags |= PFIX_FLAG;
130 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], PFIX_FLAG);
131
132 /* prefix insns dont clear the x flag. */
133 dc->clear_x = 0;
134 cris_lock_irq(dc);
135 }
136
137 static void crisv10_prepare_memaddr(DisasContext *dc,
138 TCGv addr, unsigned int size)
139 {
140 if (dc->tb_flags & PFIX_FLAG) {
141 tcg_gen_mov_tl(addr, cpu_PR[PR_PREFIX]);
142 } else {
143 tcg_gen_mov_tl(addr, cpu_R[dc->src]);
144 }
145 }
146
147 static unsigned int crisv10_post_memaddr(DisasContext *dc, unsigned int size)
148 {
149 unsigned int insn_len = 0;
150
151 if (dc->tb_flags & PFIX_FLAG) {
152 if (dc->mode == CRISV10_MODE_AUTOINC) {
153 tcg_gen_mov_tl(cpu_R[dc->src], cpu_PR[PR_PREFIX]);
154 }
155 } else {
156 if (dc->mode == CRISV10_MODE_AUTOINC) {
157 if (dc->src == 15) {
158 insn_len += size & ~1;
159 } else {
160 tcg_gen_addi_tl(cpu_R[dc->src], cpu_R[dc->src], size);
161 }
162 }
163 }
164 return insn_len;
165 }
166
167 static int dec10_prep_move_m(CPUCRISState *env, DisasContext *dc,
168 int s_ext, int memsize, TCGv dst)
169 {
170 unsigned int rs;
171 uint32_t imm;
172 int is_imm;
173 int insn_len = 0;
174
175 rs = dc->src;
176 is_imm = rs == 15 && !(dc->tb_flags & PFIX_FLAG);
177 LOG_DIS("rs=%d rd=%d is_imm=%d mode=%d pfix=%d\n",
178 rs, dc->dst, is_imm, dc->mode, dc->tb_flags & PFIX_FLAG);
179
180 /* Load [$rs] onto T1. */
181 if (is_imm) {
182 if (memsize != 4) {
183 if (s_ext) {
184 if (memsize == 1)
185 imm = cpu_ldsb_code(env, dc->pc + 2);
186 else
187 imm = cpu_ldsw_code(env, dc->pc + 2);
188 } else {
189 if (memsize == 1)
190 imm = cpu_ldub_code(env, dc->pc + 2);
191 else
192 imm = cpu_lduw_code(env, dc->pc + 2);
193 }
194 } else
195 imm = cpu_ldl_code(env, dc->pc + 2);
196
197 tcg_gen_movi_tl(dst, imm);
198
199 if (dc->mode == CRISV10_MODE_AUTOINC) {
200 insn_len += memsize;
201 if (memsize == 1)
202 insn_len++;
203 tcg_gen_addi_tl(cpu_R[15], cpu_R[15], insn_len);
204 }
205 } else {
206 TCGv addr;
207
208 addr = tcg_temp_new();
209 cris_flush_cc_state(dc);
210 crisv10_prepare_memaddr(dc, addr, memsize);
211 gen_load(dc, dst, addr, memsize, 0);
212 if (s_ext)
213 t_gen_sext(dst, dst, memsize);
214 else
215 t_gen_zext(dst, dst, memsize);
216 insn_len += crisv10_post_memaddr(dc, memsize);
217 tcg_temp_free(addr);
218 }
219
220 if (dc->mode == CRISV10_MODE_INDIRECT && (dc->tb_flags & PFIX_FLAG)) {
221 dc->dst = dc->src;
222 }
223 return insn_len;
224 }
225
226 static unsigned int dec10_quick_imm(DisasContext *dc)
227 {
228 int32_t imm, simm;
229 int op;
230
231 /* sign extend. */
232 imm = dc->ir & ((1 << 6) - 1);
233 simm = (int8_t) (imm << 2);
234 simm >>= 2;
235 switch (dc->opcode) {
236 case CRISV10_QIMM_BDAP_R0:
237 case CRISV10_QIMM_BDAP_R1:
238 case CRISV10_QIMM_BDAP_R2:
239 case CRISV10_QIMM_BDAP_R3:
240 simm = (int8_t)dc->ir;
241 LOG_DIS("bdap %d $r%d\n", simm, dc->dst);
242 LOG_DIS("pc=%x mode=%x quickimm %d r%d r%d\n",
243 dc->pc, dc->mode, dc->opcode, dc->src, dc->dst);
244 cris_set_prefix(dc);
245 if (dc->dst == 15) {
246 tcg_gen_movi_tl(cpu_PR[PR_PREFIX], dc->pc + 2 + simm);
247 } else {
248 tcg_gen_addi_tl(cpu_PR[PR_PREFIX], cpu_R[dc->dst], simm);
249 }
250 break;
251
252 case CRISV10_QIMM_MOVEQ:
253 LOG_DIS("moveq %d, $r%d\n", simm, dc->dst);
254
255 cris_cc_mask(dc, CC_MASK_NZVC);
256 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst],
257 cpu_R[dc->dst], tcg_const_tl(simm), 4);
258 break;
259 case CRISV10_QIMM_CMPQ:
260 LOG_DIS("cmpq %d, $r%d\n", simm, dc->dst);
261
262 cris_cc_mask(dc, CC_MASK_NZVC);
263 cris_alu(dc, CC_OP_CMP, cpu_R[dc->dst],
264 cpu_R[dc->dst], tcg_const_tl(simm), 4);
265 break;
266 case CRISV10_QIMM_ADDQ:
267 LOG_DIS("addq %d, $r%d\n", imm, dc->dst);
268
269 cris_cc_mask(dc, CC_MASK_NZVC);
270 cris_alu(dc, CC_OP_ADD, cpu_R[dc->dst],
271 cpu_R[dc->dst], tcg_const_tl(imm), 4);
272 break;
273 case CRISV10_QIMM_ANDQ:
274 LOG_DIS("andq %d, $r%d\n", simm, dc->dst);
275
276 cris_cc_mask(dc, CC_MASK_NZVC);
277 cris_alu(dc, CC_OP_AND, cpu_R[dc->dst],
278 cpu_R[dc->dst], tcg_const_tl(simm), 4);
279 break;
280 case CRISV10_QIMM_ASHQ:
281 LOG_DIS("ashq %d, $r%d\n", simm, dc->dst);
282
283 cris_cc_mask(dc, CC_MASK_NZVC);
284 op = imm & (1 << 5);
285 imm &= 0x1f;
286 if (op) {
287 cris_alu(dc, CC_OP_ASR, cpu_R[dc->dst],
288 cpu_R[dc->dst], tcg_const_tl(imm), 4);
289 } else {
290 /* BTST */
291 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
292 gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->dst],
293 tcg_const_tl(imm), cpu_PR[PR_CCS]);
294 }
295 break;
296 case CRISV10_QIMM_LSHQ:
297 LOG_DIS("lshq %d, $r%d\n", simm, dc->dst);
298
299 op = CC_OP_LSL;
300 if (imm & (1 << 5)) {
301 op = CC_OP_LSR;
302 }
303 imm &= 0x1f;
304 cris_cc_mask(dc, CC_MASK_NZVC);
305 cris_alu(dc, op, cpu_R[dc->dst],
306 cpu_R[dc->dst], tcg_const_tl(imm), 4);
307 break;
308 case CRISV10_QIMM_SUBQ:
309 LOG_DIS("subq %d, $r%d\n", imm, dc->dst);
310
311 cris_cc_mask(dc, CC_MASK_NZVC);
312 cris_alu(dc, CC_OP_SUB, cpu_R[dc->dst],
313 cpu_R[dc->dst], tcg_const_tl(imm), 4);
314 break;
315 case CRISV10_QIMM_ORQ:
316 LOG_DIS("andq %d, $r%d\n", simm, dc->dst);
317
318 cris_cc_mask(dc, CC_MASK_NZVC);
319 cris_alu(dc, CC_OP_OR, cpu_R[dc->dst],
320 cpu_R[dc->dst], tcg_const_tl(simm), 4);
321 break;
322
323 case CRISV10_QIMM_BCC_R0:
324 case CRISV10_QIMM_BCC_R1:
325 case CRISV10_QIMM_BCC_R2:
326 case CRISV10_QIMM_BCC_R3:
327 imm = dc->ir & 0xff;
328 /* bit 0 is a sign bit. */
329 if (imm & 1) {
330 imm |= 0xffffff00; /* sign extend. */
331 imm &= ~1; /* get rid of the sign bit. */
332 }
333 imm += 2;
334 LOG_DIS("b%s %d\n", cc_name(dc->cond), imm);
335
336 cris_cc_mask(dc, 0);
337 cris_prepare_cc_branch(dc, imm, dc->cond);
338 break;
339
340 default:
341 LOG_DIS("pc=%x mode=%x quickimm %d r%d r%d\n",
342 dc->pc, dc->mode, dc->opcode, dc->src, dc->dst);
343 cpu_abort(CPU(dc->cpu), "Unhandled quickimm\n");
344 break;
345 }
346 return 2;
347 }
348
349 static unsigned int dec10_setclrf(DisasContext *dc)
350 {
351 uint32_t flags;
352 unsigned int set = ~dc->opcode & 1;
353
354 flags = EXTRACT_FIELD(dc->ir, 0, 3)
355 | (EXTRACT_FIELD(dc->ir, 12, 15) << 4);
356 LOG_DIS("%s set=%d flags=%x\n", __func__, set, flags);
357
358
359 if (flags & X_FLAG) {
360 dc->flagx_known = 1;
361 if (set)
362 dc->flags_x = X_FLAG;
363 else
364 dc->flags_x = 0;
365 }
366
367 cris_evaluate_flags (dc);
368 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
369 cris_update_cc_x(dc);
370 tcg_gen_movi_tl(cc_op, dc->cc_op);
371
372 if (set) {
373 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags);
374 } else {
375 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS],
376 ~(flags|F_FLAG_V10|P_FLAG_V10));
377 }
378
379 dc->flags_uptodate = 1;
380 dc->clear_x = 0;
381 cris_lock_irq(dc);
382 return 2;
383 }
384
385 static inline void dec10_reg_prep_sext(DisasContext *dc, int size, int sext,
386 TCGv dd, TCGv ds, TCGv sd, TCGv ss)
387 {
388 if (sext) {
389 t_gen_sext(dd, sd, size);
390 t_gen_sext(ds, ss, size);
391 } else {
392 t_gen_zext(dd, sd, size);
393 t_gen_zext(ds, ss, size);
394 }
395 }
396
397 static void dec10_reg_alu(DisasContext *dc, int op, int size, int sext)
398 {
399 TCGv t[2];
400
401 t[0] = tcg_temp_new();
402 t[1] = tcg_temp_new();
403 dec10_reg_prep_sext(dc, size, sext,
404 t[0], t[1], cpu_R[dc->dst], cpu_R[dc->src]);
405
406 if (op == CC_OP_LSL || op == CC_OP_LSR || op == CC_OP_ASR) {
407 tcg_gen_andi_tl(t[1], t[1], 63);
408 }
409
410 assert(dc->dst != 15);
411 cris_alu(dc, op, cpu_R[dc->dst], t[0], t[1], size);
412 tcg_temp_free(t[0]);
413 tcg_temp_free(t[1]);
414 }
415
416 static void dec10_reg_bound(DisasContext *dc, int size)
417 {
418 TCGv t;
419
420 t = tcg_temp_local_new();
421 t_gen_zext(t, cpu_R[dc->src], size);
422 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
423 tcg_temp_free(t);
424 }
425
426 static void dec10_reg_mul(DisasContext *dc, int size, int sext)
427 {
428 int op = sext ? CC_OP_MULS : CC_OP_MULU;
429 TCGv t[2];
430
431 t[0] = tcg_temp_new();
432 t[1] = tcg_temp_new();
433 dec10_reg_prep_sext(dc, size, sext,
434 t[0], t[1], cpu_R[dc->dst], cpu_R[dc->src]);
435
436 cris_alu(dc, op, cpu_R[dc->dst], t[0], t[1], 4);
437
438 tcg_temp_free(t[0]);
439 tcg_temp_free(t[1]);
440 }
441
442
443 static void dec10_reg_movs(DisasContext *dc)
444 {
445 int size = (dc->size & 1) + 1;
446 TCGv t;
447
448 LOG_DIS("movx.%d $r%d, $r%d\n", size, dc->src, dc->dst);
449 cris_cc_mask(dc, CC_MASK_NZVC);
450
451 t = tcg_temp_new();
452 if (dc->ir & 32)
453 t_gen_sext(t, cpu_R[dc->src], size);
454 else
455 t_gen_zext(t, cpu_R[dc->src], size);
456
457 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
458 tcg_temp_free(t);
459 }
460
461 static void dec10_reg_alux(DisasContext *dc, int op)
462 {
463 int size = (dc->size & 1) + 1;
464 TCGv t;
465
466 LOG_DIS("movx.%d $r%d, $r%d\n", size, dc->src, dc->dst);
467 cris_cc_mask(dc, CC_MASK_NZVC);
468
469 t = tcg_temp_new();
470 if (dc->ir & 32)
471 t_gen_sext(t, cpu_R[dc->src], size);
472 else
473 t_gen_zext(t, cpu_R[dc->src], size);
474
475 cris_alu(dc, op, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
476 tcg_temp_free(t);
477 }
478
479 static void dec10_reg_mov_pr(DisasContext *dc)
480 {
481 LOG_DIS("move p%d r%d sz=%d\n", dc->dst, dc->src, preg_sizes_v10[dc->dst]);
482 cris_lock_irq(dc);
483 if (dc->src == 15) {
484 tcg_gen_mov_tl(env_btarget, cpu_PR[dc->dst]);
485 cris_prepare_jmp(dc, JMP_INDIRECT);
486 return;
487 }
488 if (dc->dst == PR_CCS) {
489 cris_evaluate_flags(dc);
490 }
491 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->src],
492 cpu_R[dc->src], cpu_PR[dc->dst], preg_sizes_v10[dc->dst]);
493 }
494
495 static void dec10_reg_abs(DisasContext *dc)
496 {
497 TCGv t0;
498
499 LOG_DIS("abs $r%u, $r%u\n", dc->src, dc->dst);
500
501 assert(dc->dst != 15);
502 t0 = tcg_temp_new();
503 tcg_gen_sari_tl(t0, cpu_R[dc->src], 31);
504 tcg_gen_xor_tl(cpu_R[dc->dst], cpu_R[dc->src], t0);
505 tcg_gen_sub_tl(t0, cpu_R[dc->dst], t0);
506
507 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t0, 4);
508 tcg_temp_free(t0);
509 }
510
511 static void dec10_reg_swap(DisasContext *dc)
512 {
513 TCGv t0;
514
515 LOG_DIS("not $r%d, $r%d\n", dc->src, dc->dst);
516
517 cris_cc_mask(dc, CC_MASK_NZVC);
518 t0 = tcg_temp_new();
519 tcg_gen_mov_tl(t0, cpu_R[dc->src]);
520 if (dc->dst & 8)
521 tcg_gen_not_tl(t0, t0);
522 if (dc->dst & 4)
523 t_gen_swapw(t0, t0);
524 if (dc->dst & 2)
525 t_gen_swapb(t0, t0);
526 if (dc->dst & 1)
527 t_gen_swapr(t0, t0);
528 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->src], cpu_R[dc->src], t0, 4);
529 tcg_temp_free(t0);
530 }
531
532 static void dec10_reg_scc(DisasContext *dc)
533 {
534 int cond = dc->dst;
535
536 LOG_DIS("s%s $r%u\n", cc_name(cond), dc->src);
537
538 if (cond != CC_A)
539 {
540 int l1;
541
542 gen_tst_cc (dc, cpu_R[dc->src], cond);
543 l1 = gen_new_label();
544 tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_R[dc->src], 0, l1);
545 tcg_gen_movi_tl(cpu_R[dc->src], 1);
546 gen_set_label(l1);
547 } else {
548 tcg_gen_movi_tl(cpu_R[dc->src], 1);
549 }
550
551 cris_cc_mask(dc, 0);
552 }
553
554 static unsigned int dec10_reg(DisasContext *dc)
555 {
556 TCGv t;
557 unsigned int insn_len = 2;
558 unsigned int size = dec10_size(dc->size);
559 unsigned int tmp;
560
561 if (dc->size != 3) {
562 switch (dc->opcode) {
563 case CRISV10_REG_MOVE_R:
564 LOG_DIS("move.%d $r%d, $r%d\n", dc->size, dc->src, dc->dst);
565 cris_cc_mask(dc, CC_MASK_NZVC);
566 dec10_reg_alu(dc, CC_OP_MOVE, size, 0);
567 if (dc->dst == 15) {
568 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
569 cris_prepare_jmp(dc, JMP_INDIRECT);
570 dc->delayed_branch = 1;
571 }
572 break;
573 case CRISV10_REG_MOVX:
574 cris_cc_mask(dc, CC_MASK_NZVC);
575 dec10_reg_movs(dc);
576 break;
577 case CRISV10_REG_ADDX:
578 cris_cc_mask(dc, CC_MASK_NZVC);
579 dec10_reg_alux(dc, CC_OP_ADD);
580 break;
581 case CRISV10_REG_SUBX:
582 cris_cc_mask(dc, CC_MASK_NZVC);
583 dec10_reg_alux(dc, CC_OP_SUB);
584 break;
585 case CRISV10_REG_ADD:
586 LOG_DIS("add $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
587 cris_cc_mask(dc, CC_MASK_NZVC);
588 dec10_reg_alu(dc, CC_OP_ADD, size, 0);
589 break;
590 case CRISV10_REG_SUB:
591 LOG_DIS("sub $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
592 cris_cc_mask(dc, CC_MASK_NZVC);
593 dec10_reg_alu(dc, CC_OP_SUB, size, 0);
594 break;
595 case CRISV10_REG_CMP:
596 LOG_DIS("cmp $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
597 cris_cc_mask(dc, CC_MASK_NZVC);
598 dec10_reg_alu(dc, CC_OP_CMP, size, 0);
599 break;
600 case CRISV10_REG_BOUND:
601 LOG_DIS("bound $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
602 cris_cc_mask(dc, CC_MASK_NZVC);
603 dec10_reg_bound(dc, size);
604 break;
605 case CRISV10_REG_AND:
606 LOG_DIS("and $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
607 cris_cc_mask(dc, CC_MASK_NZVC);
608 dec10_reg_alu(dc, CC_OP_AND, size, 0);
609 break;
610 case CRISV10_REG_ADDI:
611 if (dc->src == 15) {
612 /* nop. */
613 return 2;
614 }
615 t = tcg_temp_new();
616 LOG_DIS("addi r%d r%d size=%d\n", dc->src, dc->dst, dc->size);
617 tcg_gen_shli_tl(t, cpu_R[dc->dst], dc->size & 3);
618 tcg_gen_add_tl(cpu_R[dc->src], cpu_R[dc->src], t);
619 tcg_temp_free(t);
620 break;
621 case CRISV10_REG_LSL:
622 LOG_DIS("lsl $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
623 cris_cc_mask(dc, CC_MASK_NZVC);
624 dec10_reg_alu(dc, CC_OP_LSL, size, 0);
625 break;
626 case CRISV10_REG_LSR:
627 LOG_DIS("lsr $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
628 cris_cc_mask(dc, CC_MASK_NZVC);
629 dec10_reg_alu(dc, CC_OP_LSR, size, 0);
630 break;
631 case CRISV10_REG_ASR:
632 LOG_DIS("asr $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
633 cris_cc_mask(dc, CC_MASK_NZVC);
634 dec10_reg_alu(dc, CC_OP_ASR, size, 1);
635 break;
636 case CRISV10_REG_OR:
637 LOG_DIS("or $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
638 cris_cc_mask(dc, CC_MASK_NZVC);
639 dec10_reg_alu(dc, CC_OP_OR, size, 0);
640 break;
641 case CRISV10_REG_NEG:
642 LOG_DIS("neg $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
643 cris_cc_mask(dc, CC_MASK_NZVC);
644 dec10_reg_alu(dc, CC_OP_NEG, size, 0);
645 break;
646 case CRISV10_REG_BIAP:
647 LOG_DIS("BIAP pc=%x reg %d r%d r%d size=%d\n", dc->pc,
648 dc->opcode, dc->src, dc->dst, size);
649 switch (size) {
650 case 4: tmp = 2; break;
651 case 2: tmp = 1; break;
652 case 1: tmp = 0; break;
653 default:
654 cpu_abort(CPU(dc->cpu), "Unhandled BIAP");
655 break;
656 }
657
658 t = tcg_temp_new();
659 tcg_gen_shli_tl(t, cpu_R[dc->dst], tmp);
660 if (dc->src == 15) {
661 tcg_gen_addi_tl(cpu_PR[PR_PREFIX], t, ((dc->pc +2)| 1) + 1);
662 } else {
663 tcg_gen_add_tl(cpu_PR[PR_PREFIX], cpu_R[dc->src], t);
664 }
665 tcg_temp_free(t);
666 cris_set_prefix(dc);
667 break;
668
669 default:
670 LOG_DIS("pc=%x reg %d r%d r%d\n", dc->pc,
671 dc->opcode, dc->src, dc->dst);
672 cpu_abort(CPU(dc->cpu), "Unhandled opcode");
673 break;
674 }
675 } else {
676 switch (dc->opcode) {
677 case CRISV10_REG_MOVX:
678 cris_cc_mask(dc, CC_MASK_NZVC);
679 dec10_reg_movs(dc);
680 break;
681 case CRISV10_REG_ADDX:
682 cris_cc_mask(dc, CC_MASK_NZVC);
683 dec10_reg_alux(dc, CC_OP_ADD);
684 break;
685 case CRISV10_REG_SUBX:
686 cris_cc_mask(dc, CC_MASK_NZVC);
687 dec10_reg_alux(dc, CC_OP_SUB);
688 break;
689 case CRISV10_REG_MOVE_SPR_R:
690 cris_evaluate_flags(dc);
691 cris_cc_mask(dc, 0);
692 dec10_reg_mov_pr(dc);
693 break;
694 case CRISV10_REG_MOVE_R_SPR:
695 LOG_DIS("move r%d p%d\n", dc->src, dc->dst);
696 cris_evaluate_flags(dc);
697 if (dc->src != 11) /* fast for srp. */
698 dc->cpustate_changed = 1;
699 t_gen_mov_preg_TN(dc, dc->dst, cpu_R[dc->src]);
700 break;
701 case CRISV10_REG_SETF:
702 case CRISV10_REG_CLEARF:
703 dec10_setclrf(dc);
704 break;
705 case CRISV10_REG_SWAP:
706 dec10_reg_swap(dc);
707 break;
708 case CRISV10_REG_ABS:
709 cris_cc_mask(dc, CC_MASK_NZVC);
710 dec10_reg_abs(dc);
711 break;
712 case CRISV10_REG_LZ:
713 LOG_DIS("lz $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
714 cris_cc_mask(dc, CC_MASK_NZVC);
715 dec10_reg_alu(dc, CC_OP_LZ, 4, 0);
716 break;
717 case CRISV10_REG_XOR:
718 LOG_DIS("xor $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
719 cris_cc_mask(dc, CC_MASK_NZVC);
720 dec10_reg_alu(dc, CC_OP_XOR, 4, 0);
721 break;
722 case CRISV10_REG_BTST:
723 LOG_DIS("btst $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
724 cris_cc_mask(dc, CC_MASK_NZVC);
725 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
726 gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->dst],
727 cpu_R[dc->src], cpu_PR[PR_CCS]);
728 break;
729 case CRISV10_REG_DSTEP:
730 LOG_DIS("dstep $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
731 cris_cc_mask(dc, CC_MASK_NZVC);
732 cris_alu(dc, CC_OP_DSTEP, cpu_R[dc->dst],
733 cpu_R[dc->dst], cpu_R[dc->src], 4);
734 break;
735 case CRISV10_REG_MSTEP:
736 LOG_DIS("mstep $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
737 cris_evaluate_flags(dc);
738 cris_cc_mask(dc, CC_MASK_NZVC);
739 cris_alu(dc, CC_OP_MSTEP, cpu_R[dc->dst],
740 cpu_R[dc->dst], cpu_R[dc->src], 4);
741 break;
742 case CRISV10_REG_SCC:
743 dec10_reg_scc(dc);
744 break;
745 default:
746 LOG_DIS("pc=%x reg %d r%d r%d\n", dc->pc,
747 dc->opcode, dc->src, dc->dst);
748 cpu_abort(CPU(dc->cpu), "Unhandled opcode");
749 break;
750 }
751 }
752 return insn_len;
753 }
754
755 static unsigned int dec10_ind_move_m_r(CPUCRISState *env, DisasContext *dc,
756 unsigned int size)
757 {
758 unsigned int insn_len = 2;
759 TCGv t;
760
761 LOG_DIS("%s: move.%d [$r%d], $r%d\n", __func__,
762 size, dc->src, dc->dst);
763
764 cris_cc_mask(dc, CC_MASK_NZVC);
765 t = tcg_temp_new();
766 insn_len += dec10_prep_move_m(env, dc, 0, size, t);
767 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t, size);
768 if (dc->dst == 15) {
769 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
770 cris_prepare_jmp(dc, JMP_INDIRECT);
771 dc->delayed_branch = 1;
772 return insn_len;
773 }
774
775 tcg_temp_free(t);
776 return insn_len;
777 }
778
779 static unsigned int dec10_ind_move_r_m(DisasContext *dc, unsigned int size)
780 {
781 unsigned int insn_len = 2;
782 TCGv addr;
783
784 LOG_DIS("move.%d $r%d, [$r%d]\n", dc->size, dc->src, dc->dst);
785 addr = tcg_temp_new();
786 crisv10_prepare_memaddr(dc, addr, size);
787 gen_store_v10(dc, addr, cpu_R[dc->dst], size);
788 insn_len += crisv10_post_memaddr(dc, size);
789
790 return insn_len;
791 }
792
793 static unsigned int dec10_ind_move_m_pr(CPUCRISState *env, DisasContext *dc)
794 {
795 unsigned int insn_len = 2, rd = dc->dst;
796 TCGv t, addr;
797
798 LOG_DIS("move.%d $p%d, [$r%d]\n", dc->size, dc->dst, dc->src);
799 cris_lock_irq(dc);
800
801 addr = tcg_temp_new();
802 t = tcg_temp_new();
803 insn_len += dec10_prep_move_m(env, dc, 0, 4, t);
804 if (rd == 15) {
805 tcg_gen_mov_tl(env_btarget, t);
806 cris_prepare_jmp(dc, JMP_INDIRECT);
807 dc->delayed_branch = 1;
808 return insn_len;
809 }
810
811 tcg_gen_mov_tl(cpu_PR[rd], t);
812 dc->cpustate_changed = 1;
813 tcg_temp_free(addr);
814 tcg_temp_free(t);
815 return insn_len;
816 }
817
818 static unsigned int dec10_ind_move_pr_m(DisasContext *dc)
819 {
820 unsigned int insn_len = 2, size = preg_sizes_v10[dc->dst];
821 TCGv addr, t0;
822
823 LOG_DIS("move.%d $p%d, [$r%d]\n", dc->size, dc->dst, dc->src);
824
825 addr = tcg_temp_new();
826 crisv10_prepare_memaddr(dc, addr, size);
827 if (dc->dst == PR_CCS) {
828 t0 = tcg_temp_new();
829 cris_evaluate_flags(dc);
830 tcg_gen_andi_tl(t0, cpu_PR[PR_CCS], ~PFIX_FLAG);
831 gen_store_v10(dc, addr, t0, size);
832 tcg_temp_free(t0);
833 } else {
834 gen_store_v10(dc, addr, cpu_PR[dc->dst], size);
835 }
836 t0 = tcg_temp_new();
837 insn_len += crisv10_post_memaddr(dc, size);
838 cris_lock_irq(dc);
839
840 return insn_len;
841 }
842
843 static void dec10_movem_r_m(DisasContext *dc)
844 {
845 int i, pfix = dc->tb_flags & PFIX_FLAG;
846 TCGv addr, t0;
847
848 LOG_DIS("%s r%d, [r%d] pi=%d ir=%x\n", __func__,
849 dc->dst, dc->src, dc->postinc, dc->ir);
850
851 addr = tcg_temp_new();
852 t0 = tcg_temp_new();
853 crisv10_prepare_memaddr(dc, addr, 4);
854 tcg_gen_mov_tl(t0, addr);
855 for (i = dc->dst; i >= 0; i--) {
856 if ((pfix && dc->mode == CRISV10_MODE_AUTOINC) && dc->src == i) {
857 gen_store_v10(dc, addr, t0, 4);
858 } else {
859 gen_store_v10(dc, addr, cpu_R[i], 4);
860 }
861 tcg_gen_addi_tl(addr, addr, 4);
862 }
863
864 if (pfix && dc->mode == CRISV10_MODE_AUTOINC) {
865 tcg_gen_mov_tl(cpu_R[dc->src], t0);
866 }
867
868 if (!pfix && dc->mode == CRISV10_MODE_AUTOINC) {
869 tcg_gen_mov_tl(cpu_R[dc->src], addr);
870 }
871 tcg_temp_free(addr);
872 tcg_temp_free(t0);
873 }
874
875 static void dec10_movem_m_r(DisasContext *dc)
876 {
877 int i, pfix = dc->tb_flags & PFIX_FLAG;
878 TCGv addr, t0;
879
880 LOG_DIS("%s [r%d], r%d pi=%d ir=%x\n", __func__,
881 dc->src, dc->dst, dc->postinc, dc->ir);
882
883 addr = tcg_temp_new();
884 t0 = tcg_temp_new();
885 crisv10_prepare_memaddr(dc, addr, 4);
886 tcg_gen_mov_tl(t0, addr);
887 for (i = dc->dst; i >= 0; i--) {
888 gen_load(dc, cpu_R[i], addr, 4, 0);
889 tcg_gen_addi_tl(addr, addr, 4);
890 }
891
892 if (pfix && dc->mode == CRISV10_MODE_AUTOINC) {
893 tcg_gen_mov_tl(cpu_R[dc->src], t0);
894 }
895
896 if (!pfix && dc->mode == CRISV10_MODE_AUTOINC) {
897 tcg_gen_mov_tl(cpu_R[dc->src], addr);
898 }
899 tcg_temp_free(addr);
900 tcg_temp_free(t0);
901 }
902
903 static int dec10_ind_alu(CPUCRISState *env, DisasContext *dc,
904 int op, unsigned int size)
905 {
906 int insn_len = 0;
907 int rd = dc->dst;
908 TCGv t[2];
909
910 cris_alu_m_alloc_temps(t);
911 insn_len += dec10_prep_move_m(env, dc, 0, size, t[0]);
912 cris_alu(dc, op, cpu_R[dc->dst], cpu_R[rd], t[0], size);
913 if (dc->dst == 15) {
914 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
915 cris_prepare_jmp(dc, JMP_INDIRECT);
916 dc->delayed_branch = 1;
917 return insn_len;
918 }
919
920 cris_alu_m_free_temps(t);
921
922 return insn_len;
923 }
924
925 static int dec10_ind_bound(CPUCRISState *env, DisasContext *dc,
926 unsigned int size)
927 {
928 int insn_len = 0;
929 int rd = dc->dst;
930 TCGv t;
931
932 t = tcg_temp_local_new();
933 insn_len += dec10_prep_move_m(env, dc, 0, size, t);
934 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->dst], cpu_R[rd], t, 4);
935 if (dc->dst == 15) {
936 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
937 cris_prepare_jmp(dc, JMP_INDIRECT);
938 dc->delayed_branch = 1;
939 return insn_len;
940 }
941
942 tcg_temp_free(t);
943 return insn_len;
944 }
945
946 static int dec10_alux_m(CPUCRISState *env, DisasContext *dc, int op)
947 {
948 unsigned int size = (dc->size & 1) ? 2 : 1;
949 unsigned int sx = !!(dc->size & 2);
950 int insn_len = 2;
951 int rd = dc->dst;
952 TCGv t;
953
954 LOG_DIS("addx size=%d sx=%d op=%d %d\n", size, sx, dc->src, dc->dst);
955
956 t = tcg_temp_new();
957
958 cris_cc_mask(dc, CC_MASK_NZVC);
959 insn_len += dec10_prep_move_m(env, dc, sx, size, t);
960 cris_alu(dc, op, cpu_R[dc->dst], cpu_R[rd], t, 4);
961 if (dc->dst == 15) {
962 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
963 cris_prepare_jmp(dc, JMP_INDIRECT);
964 dc->delayed_branch = 1;
965 return insn_len;
966 }
967
968 tcg_temp_free(t);
969 return insn_len;
970 }
971
972 static int dec10_dip(CPUCRISState *env, DisasContext *dc)
973 {
974 int insn_len = 2;
975 uint32_t imm;
976
977 LOG_DIS("dip pc=%x opcode=%d r%d r%d\n",
978 dc->pc, dc->opcode, dc->src, dc->dst);
979 if (dc->src == 15) {
980 imm = cpu_ldl_code(env, dc->pc + 2);
981 tcg_gen_movi_tl(cpu_PR[PR_PREFIX], imm);
982 if (dc->postinc)
983 insn_len += 4;
984 tcg_gen_addi_tl(cpu_R[15], cpu_R[15], insn_len - 2);
985 } else {
986 gen_load(dc, cpu_PR[PR_PREFIX], cpu_R[dc->src], 4, 0);
987 if (dc->postinc)
988 tcg_gen_addi_tl(cpu_R[dc->src], cpu_R[dc->src], 4);
989 }
990
991 cris_set_prefix(dc);
992 return insn_len;
993 }
994
995 static int dec10_bdap_m(CPUCRISState *env, DisasContext *dc, int size)
996 {
997 int insn_len = 2;
998 int rd = dc->dst;
999
1000 LOG_DIS("bdap_m pc=%x opcode=%d r%d r%d sz=%d\n",
1001 dc->pc, dc->opcode, dc->src, dc->dst, size);
1002
1003 assert(dc->dst != 15);
1004 #if 0
1005 /* 8bit embedded offset? */
1006 if (!dc->postinc && (dc->ir & (1 << 11))) {
1007 int simm = dc->ir & 0xff;
1008
1009 /* cpu_abort(CPU(dc->cpu), "Unhandled opcode"); */
1010 /* sign extended. */
1011 simm = (int8_t)simm;
1012
1013 tcg_gen_addi_tl(cpu_PR[PR_PREFIX], cpu_R[dc->dst], simm);
1014
1015 cris_set_prefix(dc);
1016 return insn_len;
1017 }
1018 #endif
1019 /* Now the rest of the modes are truly indirect. */
1020 insn_len += dec10_prep_move_m(env, dc, 1, size, cpu_PR[PR_PREFIX]);
1021 tcg_gen_add_tl(cpu_PR[PR_PREFIX], cpu_PR[PR_PREFIX], cpu_R[rd]);
1022 cris_set_prefix(dc);
1023 return insn_len;
1024 }
1025
1026 static unsigned int dec10_ind(CPUCRISState *env, DisasContext *dc)
1027 {
1028 unsigned int insn_len = 2;
1029 unsigned int size = dec10_size(dc->size);
1030 uint32_t imm;
1031 int32_t simm;
1032 TCGv t[2];
1033
1034 if (dc->size != 3) {
1035 switch (dc->opcode) {
1036 case CRISV10_IND_MOVE_M_R:
1037 return dec10_ind_move_m_r(env, dc, size);
1038 break;
1039 case CRISV10_IND_MOVE_R_M:
1040 return dec10_ind_move_r_m(dc, size);
1041 break;
1042 case CRISV10_IND_CMP:
1043 LOG_DIS("cmp size=%d op=%d %d\n", size, dc->src, dc->dst);
1044 cris_cc_mask(dc, CC_MASK_NZVC);
1045 insn_len += dec10_ind_alu(env, dc, CC_OP_CMP, size);
1046 break;
1047 case CRISV10_IND_TEST:
1048 LOG_DIS("test size=%d op=%d %d\n", size, dc->src, dc->dst);
1049
1050 cris_evaluate_flags(dc);
1051 cris_cc_mask(dc, CC_MASK_NZVC);
1052 cris_alu_m_alloc_temps(t);
1053 insn_len += dec10_prep_move_m(env, dc, 0, size, t[0]);
1054 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3);
1055 cris_alu(dc, CC_OP_CMP, cpu_R[dc->dst],
1056 t[0], tcg_const_tl(0), size);
1057 cris_alu_m_free_temps(t);
1058 break;
1059 case CRISV10_IND_ADD:
1060 LOG_DIS("add size=%d op=%d %d\n", size, dc->src, dc->dst);
1061 cris_cc_mask(dc, CC_MASK_NZVC);
1062 insn_len += dec10_ind_alu(env, dc, CC_OP_ADD, size);
1063 break;
1064 case CRISV10_IND_SUB:
1065 LOG_DIS("sub size=%d op=%d %d\n", size, dc->src, dc->dst);
1066 cris_cc_mask(dc, CC_MASK_NZVC);
1067 insn_len += dec10_ind_alu(env, dc, CC_OP_SUB, size);
1068 break;
1069 case CRISV10_IND_BOUND:
1070 LOG_DIS("bound size=%d op=%d %d\n", size, dc->src, dc->dst);
1071 cris_cc_mask(dc, CC_MASK_NZVC);
1072 insn_len += dec10_ind_bound(env, dc, size);
1073 break;
1074 case CRISV10_IND_AND:
1075 LOG_DIS("and size=%d op=%d %d\n", size, dc->src, dc->dst);
1076 cris_cc_mask(dc, CC_MASK_NZVC);
1077 insn_len += dec10_ind_alu(env, dc, CC_OP_AND, size);
1078 break;
1079 case CRISV10_IND_OR:
1080 LOG_DIS("or size=%d op=%d %d\n", size, dc->src, dc->dst);
1081 cris_cc_mask(dc, CC_MASK_NZVC);
1082 insn_len += dec10_ind_alu(env, dc, CC_OP_OR, size);
1083 break;
1084 case CRISV10_IND_MOVX:
1085 insn_len = dec10_alux_m(env, dc, CC_OP_MOVE);
1086 break;
1087 case CRISV10_IND_ADDX:
1088 insn_len = dec10_alux_m(env, dc, CC_OP_ADD);
1089 break;
1090 case CRISV10_IND_SUBX:
1091 insn_len = dec10_alux_m(env, dc, CC_OP_SUB);
1092 break;
1093 case CRISV10_IND_CMPX:
1094 insn_len = dec10_alux_m(env, dc, CC_OP_CMP);
1095 break;
1096 case CRISV10_IND_MUL:
1097 /* This is a reg insn coded in the mem indir space. */
1098 LOG_DIS("mul pc=%x opcode=%d\n", dc->pc, dc->opcode);
1099 cris_cc_mask(dc, CC_MASK_NZVC);
1100 dec10_reg_mul(dc, size, dc->ir & (1 << 10));
1101 break;
1102 case CRISV10_IND_BDAP_M:
1103 insn_len = dec10_bdap_m(env, dc, size);
1104 break;
1105 default:
1106 LOG_DIS("pc=%x var-ind.%d %d r%d r%d\n",
1107 dc->pc, size, dc->opcode, dc->src, dc->dst);
1108 cpu_abort(CPU(dc->cpu), "Unhandled opcode");
1109 break;
1110 }
1111 return insn_len;
1112 }
1113
1114 switch (dc->opcode) {
1115 case CRISV10_IND_MOVE_M_SPR:
1116 insn_len = dec10_ind_move_m_pr(env, dc);
1117 break;
1118 case CRISV10_IND_MOVE_SPR_M:
1119 insn_len = dec10_ind_move_pr_m(dc);
1120 break;
1121 case CRISV10_IND_JUMP_M:
1122 if (dc->src == 15) {
1123 LOG_DIS("jump.%d %d r%d r%d direct\n", size,
1124 dc->opcode, dc->src, dc->dst);
1125 imm = cpu_ldl_code(env, dc->pc + 2);
1126 if (dc->mode == CRISV10_MODE_AUTOINC)
1127 insn_len += size;
1128
1129 t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len));
1130 dc->jmp_pc = imm;
1131 cris_prepare_jmp(dc, JMP_DIRECT);
1132 dc->delayed_branch--; /* v10 has no dslot here. */
1133 } else {
1134 if (dc->dst == 14) {
1135 LOG_DIS("break %d\n", dc->src);
1136 cris_evaluate_flags(dc);
1137 tcg_gen_movi_tl(env_pc, dc->pc + 2);
1138 t_gen_mov_env_TN(trap_vector, tcg_const_tl(dc->src + 2));
1139 t_gen_raise_exception(EXCP_BREAK);
1140 dc->is_jmp = DISAS_UPDATE;
1141 return insn_len;
1142 }
1143 LOG_DIS("%d: jump.%d %d r%d r%d\n", __LINE__, size,
1144 dc->opcode, dc->src, dc->dst);
1145 t[0] = tcg_temp_new();
1146 t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len));
1147 crisv10_prepare_memaddr(dc, t[0], size);
1148 gen_load(dc, env_btarget, t[0], 4, 0);
1149 insn_len += crisv10_post_memaddr(dc, size);
1150 cris_prepare_jmp(dc, JMP_INDIRECT);
1151 dc->delayed_branch--; /* v10 has no dslot here. */
1152 tcg_temp_free(t[0]);
1153 }
1154 break;
1155
1156 case CRISV10_IND_MOVEM_R_M:
1157 LOG_DIS("movem_r_m pc=%x opcode=%d r%d r%d\n",
1158 dc->pc, dc->opcode, dc->dst, dc->src);
1159 dec10_movem_r_m(dc);
1160 break;
1161 case CRISV10_IND_MOVEM_M_R:
1162 LOG_DIS("movem_m_r pc=%x opcode=%d\n", dc->pc, dc->opcode);
1163 dec10_movem_m_r(dc);
1164 break;
1165 case CRISV10_IND_JUMP_R:
1166 LOG_DIS("jmp pc=%x opcode=%d r%d r%d\n",
1167 dc->pc, dc->opcode, dc->dst, dc->src);
1168 tcg_gen_mov_tl(env_btarget, cpu_R[dc->src]);
1169 t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len));
1170 cris_prepare_jmp(dc, JMP_INDIRECT);
1171 dc->delayed_branch--; /* v10 has no dslot here. */
1172 break;
1173 case CRISV10_IND_MOVX:
1174 insn_len = dec10_alux_m(env, dc, CC_OP_MOVE);
1175 break;
1176 case CRISV10_IND_ADDX:
1177 insn_len = dec10_alux_m(env, dc, CC_OP_ADD);
1178 break;
1179 case CRISV10_IND_SUBX:
1180 insn_len = dec10_alux_m(env, dc, CC_OP_SUB);
1181 break;
1182 case CRISV10_IND_CMPX:
1183 insn_len = dec10_alux_m(env, dc, CC_OP_CMP);
1184 break;
1185 case CRISV10_IND_DIP:
1186 insn_len = dec10_dip(env, dc);
1187 break;
1188 case CRISV10_IND_BCC_M:
1189
1190 cris_cc_mask(dc, 0);
1191 imm = cpu_ldsw_code(env, dc->pc + 2);
1192 simm = (int16_t)imm;
1193 simm += 4;
1194
1195 LOG_DIS("bcc_m: b%s %x\n", cc_name(dc->cond), dc->pc + simm);
1196 cris_prepare_cc_branch(dc, simm, dc->cond);
1197 insn_len = 4;
1198 break;
1199 default:
1200 LOG_DIS("ERROR pc=%x opcode=%d\n", dc->pc, dc->opcode);
1201 cpu_abort(CPU(dc->cpu), "Unhandled opcode");
1202 break;
1203 }
1204
1205 return insn_len;
1206 }
1207
1208 static unsigned int crisv10_decoder(CPUCRISState *env, DisasContext *dc)
1209 {
1210 unsigned int insn_len = 2;
1211
1212 if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP)))
1213 tcg_gen_debug_insn_start(dc->pc);
1214
1215 /* Load a halfword onto the instruction register. */
1216 dc->ir = cpu_lduw_code(env, dc->pc);
1217
1218 /* Now decode it. */
1219 dc->opcode = EXTRACT_FIELD(dc->ir, 6, 9);
1220 dc->mode = EXTRACT_FIELD(dc->ir, 10, 11);
1221 dc->src = EXTRACT_FIELD(dc->ir, 0, 3);
1222 dc->size = EXTRACT_FIELD(dc->ir, 4, 5);
1223 dc->cond = dc->dst = EXTRACT_FIELD(dc->ir, 12, 15);
1224 dc->postinc = EXTRACT_FIELD(dc->ir, 10, 10);
1225
1226 dc->clear_prefix = 1;
1227
1228 /* FIXME: What if this insn insn't 2 in length?? */
1229 if (dc->src == 15 || dc->dst == 15)
1230 tcg_gen_movi_tl(cpu_R[15], dc->pc + 2);
1231
1232 switch (dc->mode) {
1233 case CRISV10_MODE_QIMMEDIATE:
1234 insn_len = dec10_quick_imm(dc);
1235 break;
1236 case CRISV10_MODE_REG:
1237 insn_len = dec10_reg(dc);
1238 break;
1239 case CRISV10_MODE_AUTOINC:
1240 case CRISV10_MODE_INDIRECT:
1241 insn_len = dec10_ind(env, dc);
1242 break;
1243 }
1244
1245 if (dc->clear_prefix && dc->tb_flags & PFIX_FLAG) {
1246 dc->tb_flags &= ~PFIX_FLAG;
1247 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~PFIX_FLAG);
1248 if (dc->tb_flags != dc->tb->flags) {
1249 dc->cpustate_changed = 1;
1250 }
1251 }
1252
1253 /* CRISv10 locks out interrupts on dslots. */
1254 if (dc->delayed_branch == 2) {
1255 cris_lock_irq(dc);
1256 }
1257 return insn_len;
1258 }
1259
1260 void cris_initialize_crisv10_tcg(void)
1261 {
1262 int i;
1263
1264 cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
1265 cc_x = tcg_global_mem_new(TCG_AREG0,
1266 offsetof(CPUCRISState, cc_x), "cc_x");
1267 cc_src = tcg_global_mem_new(TCG_AREG0,
1268 offsetof(CPUCRISState, cc_src), "cc_src");
1269 cc_dest = tcg_global_mem_new(TCG_AREG0,
1270 offsetof(CPUCRISState, cc_dest),
1271 "cc_dest");
1272 cc_result = tcg_global_mem_new(TCG_AREG0,
1273 offsetof(CPUCRISState, cc_result),
1274 "cc_result");
1275 cc_op = tcg_global_mem_new(TCG_AREG0,
1276 offsetof(CPUCRISState, cc_op), "cc_op");
1277 cc_size = tcg_global_mem_new(TCG_AREG0,
1278 offsetof(CPUCRISState, cc_size),
1279 "cc_size");
1280 cc_mask = tcg_global_mem_new(TCG_AREG0,
1281 offsetof(CPUCRISState, cc_mask),
1282 "cc_mask");
1283
1284 env_pc = tcg_global_mem_new(TCG_AREG0,
1285 offsetof(CPUCRISState, pc),
1286 "pc");
1287 env_btarget = tcg_global_mem_new(TCG_AREG0,
1288 offsetof(CPUCRISState, btarget),
1289 "btarget");
1290 env_btaken = tcg_global_mem_new(TCG_AREG0,
1291 offsetof(CPUCRISState, btaken),
1292 "btaken");
1293 for (i = 0; i < 16; i++) {
1294 cpu_R[i] = tcg_global_mem_new(TCG_AREG0,
1295 offsetof(CPUCRISState, regs[i]),
1296 regnames_v10[i]);
1297 }
1298 for (i = 0; i < 16; i++) {
1299 cpu_PR[i] = tcg_global_mem_new(TCG_AREG0,
1300 offsetof(CPUCRISState, pregs[i]),
1301 pregnames_v10[i]);
1302 }
1303 }
AR7 emulation for QEMU