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m25p80: Introduce configuration registers.
[qemu/ar7.git] / target-cris / translate_v10.c
blob4707a18e775cdbafdbcd1b20c6a90e4e1aea9dc6
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 "qemu/osdep.h"
22 #include "crisv10-decode.h"
23
24 static const char *regnames_v10[] =
25 {
26 "$r0", "$r1", "$r2", "$r3",
27 "$r4", "$r5", "$r6", "$r7",
28 "$r8", "$r9", "$r10", "$r11",
29 "$r12", "$r13", "$sp", "$pc",
30 };
31
32 static const char *pregnames_v10[] =
33 {
34 "$bz", "$vr", "$p2", "$p3",
35 "$wz", "$ccr", "$p6-prefix", "$mof",
36 "$dz", "$ibr", "$irp", "$srp",
37 "$bar", "$dccr", "$brp", "$usp",
38 };
39
40 /* We need this table to handle preg-moves with implicit width. */
41 static int preg_sizes_v10[] = {
42 1, /* bz. */
43 1, /* vr. */
44 1, /* pid. */
45 1, /* srs. */
46 2, /* wz. */
47 2, 2, 4,
48 4, 4, 4, 4,
49 4, 4, 4, 4,
50 };
51
52 static inline int dec10_size(unsigned int size)
53 {
54 size++;
55 if (size == 3)
56 size++;
57 return size;
58 }
59
60 static inline void cris_illegal_insn(DisasContext *dc)
61 {
62 qemu_log_mask(LOG_GUEST_ERROR, "illegal insn at pc=%x\n", dc->pc);
63 t_gen_raise_exception(EXCP_BREAK);
64 }
65
66 static void gen_store_v10_conditional(DisasContext *dc, TCGv addr, TCGv val,
67 unsigned int size, int mem_index)
68 {
69 TCGLabel *l1 = gen_new_label();
70 TCGv taddr = tcg_temp_local_new();
71 TCGv tval = tcg_temp_local_new();
72 TCGv t1 = tcg_temp_local_new();
73 dc->postinc = 0;
74 cris_evaluate_flags(dc);
75
76 tcg_gen_mov_tl(taddr, addr);
77 tcg_gen_mov_tl(tval, val);
78
79 /* Store only if F flag isn't set */
80 tcg_gen_andi_tl(t1, cpu_PR[PR_CCS], F_FLAG_V10);
81 tcg_gen_brcondi_tl(TCG_COND_NE, t1, 0, l1);
82 if (size == 1) {
83 tcg_gen_qemu_st8(tval, taddr, mem_index);
84 } else if (size == 2) {
85 tcg_gen_qemu_st16(tval, taddr, mem_index);
86 } else {
87 tcg_gen_qemu_st32(tval, taddr, mem_index);
88 }
89 gen_set_label(l1);
90 tcg_gen_shri_tl(t1, t1, 1); /* shift F to P position */
91 tcg_gen_or_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], t1); /*P=F*/
92 tcg_temp_free(t1);
93 tcg_temp_free(tval);
94 tcg_temp_free(taddr);
95 }
96
97 static void gen_store_v10(DisasContext *dc, TCGv addr, TCGv val,
98 unsigned int size)
99 {
100 int mem_index = cpu_mmu_index(&dc->cpu->env, false);
101
102 /* If we get a fault on a delayslot we must keep the jmp state in
103 the cpu-state to be able to re-execute the jmp. */
104 if (dc->delayed_branch == 1) {
105 cris_store_direct_jmp(dc);
106 }
107
108 /* Conditional writes. We only support the kind were X is known
109 at translation time. */
110 if (dc->flagx_known && dc->flags_x) {
111 gen_store_v10_conditional(dc, addr, val, size, mem_index);
112 return;
113 }
114
115 if (size == 1) {
116 tcg_gen_qemu_st8(val, addr, mem_index);
117 } else if (size == 2) {
118 tcg_gen_qemu_st16(val, addr, mem_index);
119 } else {
120 tcg_gen_qemu_st32(val, addr, mem_index);
121 }
122 }
123
124
125 /* Prefix flag and register are used to handle the more complex
126 addressing modes. */
127 static void cris_set_prefix(DisasContext *dc)
128 {
129 dc->clear_prefix = 0;
130 dc->tb_flags |= PFIX_FLAG;
131 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], PFIX_FLAG);
132
133 /* prefix insns don't clear the x flag. */
134 dc->clear_x = 0;
135 cris_lock_irq(dc);
136 }
137
138 static void crisv10_prepare_memaddr(DisasContext *dc,
139 TCGv addr, unsigned int size)
140 {
141 if (dc->tb_flags & PFIX_FLAG) {
142 tcg_gen_mov_tl(addr, cpu_PR[PR_PREFIX]);
143 } else {
144 tcg_gen_mov_tl(addr, cpu_R[dc->src]);
145 }
146 }
147
148 static unsigned int crisv10_post_memaddr(DisasContext *dc, unsigned int size)
149 {
150 unsigned int insn_len = 0;
151
152 if (dc->tb_flags & PFIX_FLAG) {
153 if (dc->mode == CRISV10_MODE_AUTOINC) {
154 tcg_gen_mov_tl(cpu_R[dc->src], cpu_PR[PR_PREFIX]);
155 }
156 } else {
157 if (dc->mode == CRISV10_MODE_AUTOINC) {
158 if (dc->src == 15) {
159 insn_len += size & ~1;
160 } else {
161 tcg_gen_addi_tl(cpu_R[dc->src], cpu_R[dc->src], size);
162 }
163 }
164 }
165 return insn_len;
166 }
167
168 static int dec10_prep_move_m(CPUCRISState *env, DisasContext *dc,
169 int s_ext, int memsize, TCGv dst)
170 {
171 unsigned int rs;
172 uint32_t imm;
173 int is_imm;
174 int insn_len = 0;
175
176 rs = dc->src;
177 is_imm = rs == 15 && !(dc->tb_flags & PFIX_FLAG);
178 LOG_DIS("rs=%d rd=%d is_imm=%d mode=%d pfix=%d\n",
179 rs, dc->dst, is_imm, dc->mode, dc->tb_flags & PFIX_FLAG);
180
181 /* Load [$rs] onto T1. */
182 if (is_imm) {
183 if (memsize != 4) {
184 if (s_ext) {
185 if (memsize == 1)
186 imm = cpu_ldsb_code(env, dc->pc + 2);
187 else
188 imm = cpu_ldsw_code(env, dc->pc + 2);
189 } else {
190 if (memsize == 1)
191 imm = cpu_ldub_code(env, dc->pc + 2);
192 else
193 imm = cpu_lduw_code(env, dc->pc + 2);
194 }
195 } else
196 imm = cpu_ldl_code(env, dc->pc + 2);
197
198 tcg_gen_movi_tl(dst, imm);
199
200 if (dc->mode == CRISV10_MODE_AUTOINC) {
201 insn_len += memsize;
202 if (memsize == 1)
203 insn_len++;
204 tcg_gen_addi_tl(cpu_R[15], cpu_R[15], insn_len);
205 }
206 } else {
207 TCGv addr;
208
209 addr = tcg_temp_new();
210 cris_flush_cc_state(dc);
211 crisv10_prepare_memaddr(dc, addr, memsize);
212 gen_load(dc, dst, addr, memsize, 0);
213 if (s_ext)
214 t_gen_sext(dst, dst, memsize);
215 else
216 t_gen_zext(dst, dst, memsize);
217 insn_len += crisv10_post_memaddr(dc, memsize);
218 tcg_temp_free(addr);
219 }
220
221 if (dc->mode == CRISV10_MODE_INDIRECT && (dc->tb_flags & PFIX_FLAG)) {
222 dc->dst = dc->src;
223 }
224 return insn_len;
225 }
226
227 static unsigned int dec10_quick_imm(DisasContext *dc)
228 {
229 int32_t imm, simm;
230 int op;
231
232 /* sign extend. */
233 imm = dc->ir & ((1 << 6) - 1);
234 simm = (int8_t) (imm << 2);
235 simm >>= 2;
236 switch (dc->opcode) {
237 case CRISV10_QIMM_BDAP_R0:
238 case CRISV10_QIMM_BDAP_R1:
239 case CRISV10_QIMM_BDAP_R2:
240 case CRISV10_QIMM_BDAP_R3:
241 simm = (int8_t)dc->ir;
242 LOG_DIS("bdap %d $r%d\n", simm, dc->dst);
243 LOG_DIS("pc=%x mode=%x quickimm %d r%d r%d\n",
244 dc->pc, dc->mode, dc->opcode, dc->src, dc->dst);
245 cris_set_prefix(dc);
246 if (dc->dst == 15) {
247 tcg_gen_movi_tl(cpu_PR[PR_PREFIX], dc->pc + 2 + simm);
248 } else {
249 tcg_gen_addi_tl(cpu_PR[PR_PREFIX], cpu_R[dc->dst], simm);
250 }
251 break;
252
253 case CRISV10_QIMM_MOVEQ:
254 LOG_DIS("moveq %d, $r%d\n", simm, dc->dst);
255
256 cris_cc_mask(dc, CC_MASK_NZVC);
257 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst],
258 cpu_R[dc->dst], tcg_const_tl(simm), 4);
259 break;
260 case CRISV10_QIMM_CMPQ:
261 LOG_DIS("cmpq %d, $r%d\n", simm, dc->dst);
262
263 cris_cc_mask(dc, CC_MASK_NZVC);
264 cris_alu(dc, CC_OP_CMP, cpu_R[dc->dst],
265 cpu_R[dc->dst], tcg_const_tl(simm), 4);
266 break;
267 case CRISV10_QIMM_ADDQ:
268 LOG_DIS("addq %d, $r%d\n", imm, dc->dst);
269
270 cris_cc_mask(dc, CC_MASK_NZVC);
271 cris_alu(dc, CC_OP_ADD, cpu_R[dc->dst],
272 cpu_R[dc->dst], tcg_const_tl(imm), 4);
273 break;
274 case CRISV10_QIMM_ANDQ:
275 LOG_DIS("andq %d, $r%d\n", simm, dc->dst);
276
277 cris_cc_mask(dc, CC_MASK_NZVC);
278 cris_alu(dc, CC_OP_AND, cpu_R[dc->dst],
279 cpu_R[dc->dst], tcg_const_tl(simm), 4);
280 break;
281 case CRISV10_QIMM_ASHQ:
282 LOG_DIS("ashq %d, $r%d\n", simm, dc->dst);
283
284 cris_cc_mask(dc, CC_MASK_NZVC);
285 op = imm & (1 << 5);
286 imm &= 0x1f;
287 if (op) {
288 cris_alu(dc, CC_OP_ASR, cpu_R[dc->dst],
289 cpu_R[dc->dst], tcg_const_tl(imm), 4);
290 } else {
291 /* BTST */
292 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
293 gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->dst],
294 tcg_const_tl(imm), cpu_PR[PR_CCS]);
295 }
296 break;
297 case CRISV10_QIMM_LSHQ:
298 LOG_DIS("lshq %d, $r%d\n", simm, dc->dst);
299
300 op = CC_OP_LSL;
301 if (imm & (1 << 5)) {
302 op = CC_OP_LSR;
303 }
304 imm &= 0x1f;
305 cris_cc_mask(dc, CC_MASK_NZVC);
306 cris_alu(dc, op, cpu_R[dc->dst],
307 cpu_R[dc->dst], tcg_const_tl(imm), 4);
308 break;
309 case CRISV10_QIMM_SUBQ:
310 LOG_DIS("subq %d, $r%d\n", imm, dc->dst);
311
312 cris_cc_mask(dc, CC_MASK_NZVC);
313 cris_alu(dc, CC_OP_SUB, cpu_R[dc->dst],
314 cpu_R[dc->dst], tcg_const_tl(imm), 4);
315 break;
316 case CRISV10_QIMM_ORQ:
317 LOG_DIS("andq %d, $r%d\n", simm, dc->dst);
318
319 cris_cc_mask(dc, CC_MASK_NZVC);
320 cris_alu(dc, CC_OP_OR, cpu_R[dc->dst],
321 cpu_R[dc->dst], tcg_const_tl(simm), 4);
322 break;
323
324 case CRISV10_QIMM_BCC_R0:
325 case CRISV10_QIMM_BCC_R1:
326 case CRISV10_QIMM_BCC_R2:
327 case CRISV10_QIMM_BCC_R3:
328 imm = dc->ir & 0xff;
329 /* bit 0 is a sign bit. */
330 if (imm & 1) {
331 imm |= 0xffffff00; /* sign extend. */
332 imm &= ~1; /* get rid of the sign bit. */
333 }
334 imm += 2;
335 LOG_DIS("b%s %d\n", cc_name(dc->cond), imm);
336
337 cris_cc_mask(dc, 0);
338 cris_prepare_cc_branch(dc, imm, dc->cond);
339 break;
340
341 default:
342 LOG_DIS("pc=%x mode=%x quickimm %d r%d r%d\n",
343 dc->pc, dc->mode, dc->opcode, dc->src, dc->dst);
344 cpu_abort(CPU(dc->cpu), "Unhandled quickimm\n");
345 break;
346 }
347 return 2;
348 }
349
350 static unsigned int dec10_setclrf(DisasContext *dc)
351 {
352 uint32_t flags;
353 unsigned int set = ~dc->opcode & 1;
354
355 flags = EXTRACT_FIELD(dc->ir, 0, 3)
356 | (EXTRACT_FIELD(dc->ir, 12, 15) << 4);
357 LOG_DIS("%s set=%d flags=%x\n", __func__, set, flags);
358
359
360 if (flags & X_FLAG) {
361 dc->flagx_known = 1;
362 if (set)
363 dc->flags_x = X_FLAG;
364 else
365 dc->flags_x = 0;
366 }
367
368 cris_evaluate_flags (dc);
369 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
370 cris_update_cc_x(dc);
371 tcg_gen_movi_tl(cc_op, dc->cc_op);
372
373 if (set) {
374 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags);
375 } else {
376 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS],
377 ~(flags|F_FLAG_V10|P_FLAG_V10));
378 }
379
380 dc->flags_uptodate = 1;
381 dc->clear_x = 0;
382 cris_lock_irq(dc);
383 return 2;
384 }
385
386 static inline void dec10_reg_prep_sext(DisasContext *dc, int size, int sext,
387 TCGv dd, TCGv ds, TCGv sd, TCGv ss)
388 {
389 if (sext) {
390 t_gen_sext(dd, sd, size);
391 t_gen_sext(ds, ss, size);
392 } else {
393 t_gen_zext(dd, sd, size);
394 t_gen_zext(ds, ss, size);
395 }
396 }
397
398 static void dec10_reg_alu(DisasContext *dc, int op, int size, int sext)
399 {
400 TCGv t[2];
401
402 t[0] = tcg_temp_new();
403 t[1] = tcg_temp_new();
404 dec10_reg_prep_sext(dc, size, sext,
405 t[0], t[1], cpu_R[dc->dst], cpu_R[dc->src]);
406
407 if (op == CC_OP_LSL || op == CC_OP_LSR || op == CC_OP_ASR) {
408 tcg_gen_andi_tl(t[1], t[1], 63);
409 }
410
411 assert(dc->dst != 15);
412 cris_alu(dc, op, cpu_R[dc->dst], t[0], t[1], size);
413 tcg_temp_free(t[0]);
414 tcg_temp_free(t[1]);
415 }
416
417 static void dec10_reg_bound(DisasContext *dc, int size)
418 {
419 TCGv t;
420
421 t = tcg_temp_local_new();
422 t_gen_zext(t, cpu_R[dc->src], size);
423 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
424 tcg_temp_free(t);
425 }
426
427 static void dec10_reg_mul(DisasContext *dc, int size, int sext)
428 {
429 int op = sext ? CC_OP_MULS : CC_OP_MULU;
430 TCGv t[2];
431
432 t[0] = tcg_temp_new();
433 t[1] = tcg_temp_new();
434 dec10_reg_prep_sext(dc, size, sext,
435 t[0], t[1], cpu_R[dc->dst], cpu_R[dc->src]);
436
437 cris_alu(dc, op, cpu_R[dc->dst], t[0], t[1], 4);
438
439 tcg_temp_free(t[0]);
440 tcg_temp_free(t[1]);
441 }
442
443
444 static void dec10_reg_movs(DisasContext *dc)
445 {
446 int size = (dc->size & 1) + 1;
447 TCGv t;
448
449 LOG_DIS("movx.%d $r%d, $r%d\n", size, dc->src, dc->dst);
450 cris_cc_mask(dc, CC_MASK_NZVC);
451
452 t = tcg_temp_new();
453 if (dc->ir & 32)
454 t_gen_sext(t, cpu_R[dc->src], size);
455 else
456 t_gen_zext(t, cpu_R[dc->src], size);
457
458 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
459 tcg_temp_free(t);
460 }
461
462 static void dec10_reg_alux(DisasContext *dc, int op)
463 {
464 int size = (dc->size & 1) + 1;
465 TCGv t;
466
467 LOG_DIS("movx.%d $r%d, $r%d\n", size, dc->src, dc->dst);
468 cris_cc_mask(dc, CC_MASK_NZVC);
469
470 t = tcg_temp_new();
471 if (dc->ir & 32)
472 t_gen_sext(t, cpu_R[dc->src], size);
473 else
474 t_gen_zext(t, cpu_R[dc->src], size);
475
476 cris_alu(dc, op, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
477 tcg_temp_free(t);
478 }
479
480 static void dec10_reg_mov_pr(DisasContext *dc)
481 {
482 LOG_DIS("move p%d r%d sz=%d\n", dc->dst, dc->src, preg_sizes_v10[dc->dst]);
483 cris_lock_irq(dc);
484 if (dc->src == 15) {
485 tcg_gen_mov_tl(env_btarget, cpu_PR[dc->dst]);
486 cris_prepare_jmp(dc, JMP_INDIRECT);
487 return;
488 }
489 if (dc->dst == PR_CCS) {
490 cris_evaluate_flags(dc);
491 }
492 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->src],
493 cpu_R[dc->src], cpu_PR[dc->dst], preg_sizes_v10[dc->dst]);
494 }
495
496 static void dec10_reg_abs(DisasContext *dc)
497 {
498 TCGv t0;
499
500 LOG_DIS("abs $r%u, $r%u\n", dc->src, dc->dst);
501
502 assert(dc->dst != 15);
503 t0 = tcg_temp_new();
504 tcg_gen_sari_tl(t0, cpu_R[dc->src], 31);
505 tcg_gen_xor_tl(cpu_R[dc->dst], cpu_R[dc->src], t0);
506 tcg_gen_sub_tl(t0, cpu_R[dc->dst], t0);
507
508 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t0, 4);
509 tcg_temp_free(t0);
510 }
511
512 static void dec10_reg_swap(DisasContext *dc)
513 {
514 TCGv t0;
515
516 LOG_DIS("not $r%d, $r%d\n", dc->src, dc->dst);
517
518 cris_cc_mask(dc, CC_MASK_NZVC);
519 t0 = tcg_temp_new();
520 tcg_gen_mov_tl(t0, cpu_R[dc->src]);
521 if (dc->dst & 8)
522 tcg_gen_not_tl(t0, t0);
523 if (dc->dst & 4)
524 t_gen_swapw(t0, t0);
525 if (dc->dst & 2)
526 t_gen_swapb(t0, t0);
527 if (dc->dst & 1)
528 t_gen_swapr(t0, t0);
529 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->src], cpu_R[dc->src], t0, 4);
530 tcg_temp_free(t0);
531 }
532
533 static void dec10_reg_scc(DisasContext *dc)
534 {
535 int cond = dc->dst;
536
537 LOG_DIS("s%s $r%u\n", cc_name(cond), dc->src);
538
539 gen_tst_cc(dc, cpu_R[dc->src], cond);
540 tcg_gen_setcondi_tl(TCG_COND_NE, cpu_R[dc->src], cpu_R[dc->src], 0);
541
542 cris_cc_mask(dc, 0);
543 }
544
545 static unsigned int dec10_reg(DisasContext *dc)
546 {
547 TCGv t;
548 unsigned int insn_len = 2;
549 unsigned int size = dec10_size(dc->size);
550 unsigned int tmp;
551
552 if (dc->size != 3) {
553 switch (dc->opcode) {
554 case CRISV10_REG_MOVE_R:
555 LOG_DIS("move.%d $r%d, $r%d\n", dc->size, dc->src, dc->dst);
556 cris_cc_mask(dc, CC_MASK_NZVC);
557 dec10_reg_alu(dc, CC_OP_MOVE, size, 0);
558 if (dc->dst == 15) {
559 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
560 cris_prepare_jmp(dc, JMP_INDIRECT);
561 dc->delayed_branch = 1;
562 }
563 break;
564 case CRISV10_REG_MOVX:
565 cris_cc_mask(dc, CC_MASK_NZVC);
566 dec10_reg_movs(dc);
567 break;
568 case CRISV10_REG_ADDX:
569 cris_cc_mask(dc, CC_MASK_NZVC);
570 dec10_reg_alux(dc, CC_OP_ADD);
571 break;
572 case CRISV10_REG_SUBX:
573 cris_cc_mask(dc, CC_MASK_NZVC);
574 dec10_reg_alux(dc, CC_OP_SUB);
575 break;
576 case CRISV10_REG_ADD:
577 LOG_DIS("add $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
578 cris_cc_mask(dc, CC_MASK_NZVC);
579 dec10_reg_alu(dc, CC_OP_ADD, size, 0);
580 break;
581 case CRISV10_REG_SUB:
582 LOG_DIS("sub $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
583 cris_cc_mask(dc, CC_MASK_NZVC);
584 dec10_reg_alu(dc, CC_OP_SUB, size, 0);
585 break;
586 case CRISV10_REG_CMP:
587 LOG_DIS("cmp $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
588 cris_cc_mask(dc, CC_MASK_NZVC);
589 dec10_reg_alu(dc, CC_OP_CMP, size, 0);
590 break;
591 case CRISV10_REG_BOUND:
592 LOG_DIS("bound $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
593 cris_cc_mask(dc, CC_MASK_NZVC);
594 dec10_reg_bound(dc, size);
595 break;
596 case CRISV10_REG_AND:
597 LOG_DIS("and $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
598 cris_cc_mask(dc, CC_MASK_NZVC);
599 dec10_reg_alu(dc, CC_OP_AND, size, 0);
600 break;
601 case CRISV10_REG_ADDI:
602 if (dc->src == 15) {
603 /* nop. */
604 return 2;
605 }
606 t = tcg_temp_new();
607 LOG_DIS("addi r%d r%d size=%d\n", dc->src, dc->dst, dc->size);
608 tcg_gen_shli_tl(t, cpu_R[dc->dst], dc->size & 3);
609 tcg_gen_add_tl(cpu_R[dc->src], cpu_R[dc->src], t);
610 tcg_temp_free(t);
611 break;
612 case CRISV10_REG_LSL:
613 LOG_DIS("lsl $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
614 cris_cc_mask(dc, CC_MASK_NZVC);
615 dec10_reg_alu(dc, CC_OP_LSL, size, 0);
616 break;
617 case CRISV10_REG_LSR:
618 LOG_DIS("lsr $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
619 cris_cc_mask(dc, CC_MASK_NZVC);
620 dec10_reg_alu(dc, CC_OP_LSR, size, 0);
621 break;
622 case CRISV10_REG_ASR:
623 LOG_DIS("asr $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
624 cris_cc_mask(dc, CC_MASK_NZVC);
625 dec10_reg_alu(dc, CC_OP_ASR, size, 1);
626 break;
627 case CRISV10_REG_OR:
628 LOG_DIS("or $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
629 cris_cc_mask(dc, CC_MASK_NZVC);
630 dec10_reg_alu(dc, CC_OP_OR, size, 0);
631 break;
632 case CRISV10_REG_NEG:
633 LOG_DIS("neg $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
634 cris_cc_mask(dc, CC_MASK_NZVC);
635 dec10_reg_alu(dc, CC_OP_NEG, size, 0);
636 break;
637 case CRISV10_REG_BIAP:
638 LOG_DIS("BIAP pc=%x reg %d r%d r%d size=%d\n", dc->pc,
639 dc->opcode, dc->src, dc->dst, size);
640 switch (size) {
641 case 4: tmp = 2; break;
642 case 2: tmp = 1; break;
643 case 1: tmp = 0; break;
644 default:
645 cpu_abort(CPU(dc->cpu), "Unhandled BIAP");
646 break;
647 }
648
649 t = tcg_temp_new();
650 tcg_gen_shli_tl(t, cpu_R[dc->dst], tmp);
651 if (dc->src == 15) {
652 tcg_gen_addi_tl(cpu_PR[PR_PREFIX], t, ((dc->pc +2)| 1) + 1);
653 } else {
654 tcg_gen_add_tl(cpu_PR[PR_PREFIX], cpu_R[dc->src], t);
655 }
656 tcg_temp_free(t);
657 cris_set_prefix(dc);
658 break;
659
660 default:
661 LOG_DIS("pc=%x reg %d r%d r%d\n", dc->pc,
662 dc->opcode, dc->src, dc->dst);
663 cpu_abort(CPU(dc->cpu), "Unhandled opcode");
664 break;
665 }
666 } else {
667 switch (dc->opcode) {
668 case CRISV10_REG_MOVX:
669 cris_cc_mask(dc, CC_MASK_NZVC);
670 dec10_reg_movs(dc);
671 break;
672 case CRISV10_REG_ADDX:
673 cris_cc_mask(dc, CC_MASK_NZVC);
674 dec10_reg_alux(dc, CC_OP_ADD);
675 break;
676 case CRISV10_REG_SUBX:
677 cris_cc_mask(dc, CC_MASK_NZVC);
678 dec10_reg_alux(dc, CC_OP_SUB);
679 break;
680 case CRISV10_REG_MOVE_SPR_R:
681 cris_evaluate_flags(dc);
682 cris_cc_mask(dc, 0);
683 dec10_reg_mov_pr(dc);
684 break;
685 case CRISV10_REG_MOVE_R_SPR:
686 LOG_DIS("move r%d p%d\n", dc->src, dc->dst);
687 cris_evaluate_flags(dc);
688 if (dc->src != 11) /* fast for srp. */
689 dc->cpustate_changed = 1;
690 t_gen_mov_preg_TN(dc, dc->dst, cpu_R[dc->src]);
691 break;
692 case CRISV10_REG_SETF:
693 case CRISV10_REG_CLEARF:
694 dec10_setclrf(dc);
695 break;
696 case CRISV10_REG_SWAP:
697 dec10_reg_swap(dc);
698 break;
699 case CRISV10_REG_ABS:
700 cris_cc_mask(dc, CC_MASK_NZVC);
701 dec10_reg_abs(dc);
702 break;
703 case CRISV10_REG_LZ:
704 LOG_DIS("lz $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
705 cris_cc_mask(dc, CC_MASK_NZVC);
706 dec10_reg_alu(dc, CC_OP_LZ, 4, 0);
707 break;
708 case CRISV10_REG_XOR:
709 LOG_DIS("xor $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
710 cris_cc_mask(dc, CC_MASK_NZVC);
711 dec10_reg_alu(dc, CC_OP_XOR, 4, 0);
712 break;
713 case CRISV10_REG_BTST:
714 LOG_DIS("btst $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
715 cris_cc_mask(dc, CC_MASK_NZVC);
716 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
717 gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->dst],
718 cpu_R[dc->src], cpu_PR[PR_CCS]);
719 break;
720 case CRISV10_REG_DSTEP:
721 LOG_DIS("dstep $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
722 cris_cc_mask(dc, CC_MASK_NZVC);
723 cris_alu(dc, CC_OP_DSTEP, cpu_R[dc->dst],
724 cpu_R[dc->dst], cpu_R[dc->src], 4);
725 break;
726 case CRISV10_REG_MSTEP:
727 LOG_DIS("mstep $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
728 cris_evaluate_flags(dc);
729 cris_cc_mask(dc, CC_MASK_NZVC);
730 cris_alu(dc, CC_OP_MSTEP, cpu_R[dc->dst],
731 cpu_R[dc->dst], cpu_R[dc->src], 4);
732 break;
733 case CRISV10_REG_SCC:
734 dec10_reg_scc(dc);
735 break;
736 default:
737 LOG_DIS("pc=%x reg %d r%d r%d\n", dc->pc,
738 dc->opcode, dc->src, dc->dst);
739 cpu_abort(CPU(dc->cpu), "Unhandled opcode");
740 break;
741 }
742 }
743 return insn_len;
744 }
745
746 static unsigned int dec10_ind_move_m_r(CPUCRISState *env, DisasContext *dc,
747 unsigned int size)
748 {
749 unsigned int insn_len = 2;
750 TCGv t;
751
752 LOG_DIS("%s: move.%d [$r%d], $r%d\n", __func__,
753 size, dc->src, dc->dst);
754
755 cris_cc_mask(dc, CC_MASK_NZVC);
756 t = tcg_temp_new();
757 insn_len += dec10_prep_move_m(env, dc, 0, size, t);
758 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t, size);
759 if (dc->dst == 15) {
760 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
761 cris_prepare_jmp(dc, JMP_INDIRECT);
762 dc->delayed_branch = 1;
763 return insn_len;
764 }
765
766 tcg_temp_free(t);
767 return insn_len;
768 }
769
770 static unsigned int dec10_ind_move_r_m(DisasContext *dc, unsigned int size)
771 {
772 unsigned int insn_len = 2;
773 TCGv addr;
774
775 LOG_DIS("move.%d $r%d, [$r%d]\n", dc->size, dc->src, dc->dst);
776 addr = tcg_temp_new();
777 crisv10_prepare_memaddr(dc, addr, size);
778 gen_store_v10(dc, addr, cpu_R[dc->dst], size);
779 insn_len += crisv10_post_memaddr(dc, size);
780
781 return insn_len;
782 }
783
784 static unsigned int dec10_ind_move_m_pr(CPUCRISState *env, DisasContext *dc)
785 {
786 unsigned int insn_len = 2, rd = dc->dst;
787 TCGv t, addr;
788
789 LOG_DIS("move.%d $p%d, [$r%d]\n", dc->size, dc->dst, dc->src);
790 cris_lock_irq(dc);
791
792 addr = tcg_temp_new();
793 t = tcg_temp_new();
794 insn_len += dec10_prep_move_m(env, dc, 0, 4, t);
795 if (rd == 15) {
796 tcg_gen_mov_tl(env_btarget, t);
797 cris_prepare_jmp(dc, JMP_INDIRECT);
798 dc->delayed_branch = 1;
799 return insn_len;
800 }
801
802 tcg_gen_mov_tl(cpu_PR[rd], t);
803 dc->cpustate_changed = 1;
804 tcg_temp_free(addr);
805 tcg_temp_free(t);
806 return insn_len;
807 }
808
809 static unsigned int dec10_ind_move_pr_m(DisasContext *dc)
810 {
811 unsigned int insn_len = 2, size = preg_sizes_v10[dc->dst];
812 TCGv addr, t0;
813
814 LOG_DIS("move.%d $p%d, [$r%d]\n", dc->size, dc->dst, dc->src);
815
816 addr = tcg_temp_new();
817 crisv10_prepare_memaddr(dc, addr, size);
818 if (dc->dst == PR_CCS) {
819 t0 = tcg_temp_new();
820 cris_evaluate_flags(dc);
821 tcg_gen_andi_tl(t0, cpu_PR[PR_CCS], ~PFIX_FLAG);
822 gen_store_v10(dc, addr, t0, size);
823 tcg_temp_free(t0);
824 } else {
825 gen_store_v10(dc, addr, cpu_PR[dc->dst], size);
826 }
827 t0 = tcg_temp_new();
828 insn_len += crisv10_post_memaddr(dc, size);
829 cris_lock_irq(dc);
830
831 return insn_len;
832 }
833
834 static void dec10_movem_r_m(DisasContext *dc)
835 {
836 int i, pfix = dc->tb_flags & PFIX_FLAG;
837 TCGv addr, t0;
838
839 LOG_DIS("%s r%d, [r%d] pi=%d ir=%x\n", __func__,
840 dc->dst, dc->src, dc->postinc, dc->ir);
841
842 addr = tcg_temp_new();
843 t0 = tcg_temp_new();
844 crisv10_prepare_memaddr(dc, addr, 4);
845 tcg_gen_mov_tl(t0, addr);
846 for (i = dc->dst; i >= 0; i--) {
847 if ((pfix && dc->mode == CRISV10_MODE_AUTOINC) && dc->src == i) {
848 gen_store_v10(dc, addr, t0, 4);
849 } else {
850 gen_store_v10(dc, addr, cpu_R[i], 4);
851 }
852 tcg_gen_addi_tl(addr, addr, 4);
853 }
854
855 if (pfix && dc->mode == CRISV10_MODE_AUTOINC) {
856 tcg_gen_mov_tl(cpu_R[dc->src], t0);
857 }
858
859 if (!pfix && dc->mode == CRISV10_MODE_AUTOINC) {
860 tcg_gen_mov_tl(cpu_R[dc->src], addr);
861 }
862 tcg_temp_free(addr);
863 tcg_temp_free(t0);
864 }
865
866 static void dec10_movem_m_r(DisasContext *dc)
867 {
868 int i, pfix = dc->tb_flags & PFIX_FLAG;
869 TCGv addr, t0;
870
871 LOG_DIS("%s [r%d], r%d pi=%d ir=%x\n", __func__,
872 dc->src, dc->dst, dc->postinc, dc->ir);
873
874 addr = tcg_temp_new();
875 t0 = tcg_temp_new();
876 crisv10_prepare_memaddr(dc, addr, 4);
877 tcg_gen_mov_tl(t0, addr);
878 for (i = dc->dst; i >= 0; i--) {
879 gen_load(dc, cpu_R[i], addr, 4, 0);
880 tcg_gen_addi_tl(addr, addr, 4);
881 }
882
883 if (pfix && dc->mode == CRISV10_MODE_AUTOINC) {
884 tcg_gen_mov_tl(cpu_R[dc->src], t0);
885 }
886
887 if (!pfix && dc->mode == CRISV10_MODE_AUTOINC) {
888 tcg_gen_mov_tl(cpu_R[dc->src], addr);
889 }
890 tcg_temp_free(addr);
891 tcg_temp_free(t0);
892 }
893
894 static int dec10_ind_alu(CPUCRISState *env, DisasContext *dc,
895 int op, unsigned int size)
896 {
897 int insn_len = 0;
898 int rd = dc->dst;
899 TCGv t[2];
900
901 cris_alu_m_alloc_temps(t);
902 insn_len += dec10_prep_move_m(env, dc, 0, size, t[0]);
903 cris_alu(dc, op, cpu_R[dc->dst], cpu_R[rd], t[0], size);
904 if (dc->dst == 15) {
905 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
906 cris_prepare_jmp(dc, JMP_INDIRECT);
907 dc->delayed_branch = 1;
908 return insn_len;
909 }
910
911 cris_alu_m_free_temps(t);
912
913 return insn_len;
914 }
915
916 static int dec10_ind_bound(CPUCRISState *env, DisasContext *dc,
917 unsigned int size)
918 {
919 int insn_len = 0;
920 int rd = dc->dst;
921 TCGv t;
922
923 t = tcg_temp_local_new();
924 insn_len += dec10_prep_move_m(env, dc, 0, size, t);
925 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->dst], cpu_R[rd], t, 4);
926 if (dc->dst == 15) {
927 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
928 cris_prepare_jmp(dc, JMP_INDIRECT);
929 dc->delayed_branch = 1;
930 return insn_len;
931 }
932
933 tcg_temp_free(t);
934 return insn_len;
935 }
936
937 static int dec10_alux_m(CPUCRISState *env, DisasContext *dc, int op)
938 {
939 unsigned int size = (dc->size & 1) ? 2 : 1;
940 unsigned int sx = !!(dc->size & 2);
941 int insn_len = 2;
942 int rd = dc->dst;
943 TCGv t;
944
945 LOG_DIS("addx size=%d sx=%d op=%d %d\n", size, sx, dc->src, dc->dst);
946
947 t = tcg_temp_new();
948
949 cris_cc_mask(dc, CC_MASK_NZVC);
950 insn_len += dec10_prep_move_m(env, dc, sx, size, t);
951 cris_alu(dc, op, cpu_R[dc->dst], cpu_R[rd], t, 4);
952 if (dc->dst == 15) {
953 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
954 cris_prepare_jmp(dc, JMP_INDIRECT);
955 dc->delayed_branch = 1;
956 return insn_len;
957 }
958
959 tcg_temp_free(t);
960 return insn_len;
961 }
962
963 static int dec10_dip(CPUCRISState *env, DisasContext *dc)
964 {
965 int insn_len = 2;
966 uint32_t imm;
967
968 LOG_DIS("dip pc=%x opcode=%d r%d r%d\n",
969 dc->pc, dc->opcode, dc->src, dc->dst);
970 if (dc->src == 15) {
971 imm = cpu_ldl_code(env, dc->pc + 2);
972 tcg_gen_movi_tl(cpu_PR[PR_PREFIX], imm);
973 if (dc->postinc)
974 insn_len += 4;
975 tcg_gen_addi_tl(cpu_R[15], cpu_R[15], insn_len - 2);
976 } else {
977 gen_load(dc, cpu_PR[PR_PREFIX], cpu_R[dc->src], 4, 0);
978 if (dc->postinc)
979 tcg_gen_addi_tl(cpu_R[dc->src], cpu_R[dc->src], 4);
980 }
981
982 cris_set_prefix(dc);
983 return insn_len;
984 }
985
986 static int dec10_bdap_m(CPUCRISState *env, DisasContext *dc, int size)
987 {
988 int insn_len = 2;
989 int rd = dc->dst;
990
991 LOG_DIS("bdap_m pc=%x opcode=%d r%d r%d sz=%d\n",
992 dc->pc, dc->opcode, dc->src, dc->dst, size);
993
994 assert(dc->dst != 15);
995 #if 0
996 /* 8bit embedded offset? */
997 if (!dc->postinc && (dc->ir & (1 << 11))) {
998 int simm = dc->ir & 0xff;
999
1000 /* cpu_abort(CPU(dc->cpu), "Unhandled opcode"); */
1001 /* sign extended. */
1002 simm = (int8_t)simm;
1003
1004 tcg_gen_addi_tl(cpu_PR[PR_PREFIX], cpu_R[dc->dst], simm);
1005
1006 cris_set_prefix(dc);
1007 return insn_len;
1008 }
1009 #endif
1010 /* Now the rest of the modes are truly indirect. */
1011 insn_len += dec10_prep_move_m(env, dc, 1, size, cpu_PR[PR_PREFIX]);
1012 tcg_gen_add_tl(cpu_PR[PR_PREFIX], cpu_PR[PR_PREFIX], cpu_R[rd]);
1013 cris_set_prefix(dc);
1014 return insn_len;
1015 }
1016
1017 static unsigned int dec10_ind(CPUCRISState *env, DisasContext *dc)
1018 {
1019 unsigned int insn_len = 2;
1020 unsigned int size = dec10_size(dc->size);
1021 uint32_t imm;
1022 int32_t simm;
1023 TCGv t[2];
1024
1025 if (dc->size != 3) {
1026 switch (dc->opcode) {
1027 case CRISV10_IND_MOVE_M_R:
1028 return dec10_ind_move_m_r(env, dc, size);
1029 break;
1030 case CRISV10_IND_MOVE_R_M:
1031 return dec10_ind_move_r_m(dc, size);
1032 break;
1033 case CRISV10_IND_CMP:
1034 LOG_DIS("cmp size=%d op=%d %d\n", size, dc->src, dc->dst);
1035 cris_cc_mask(dc, CC_MASK_NZVC);
1036 insn_len += dec10_ind_alu(env, dc, CC_OP_CMP, size);
1037 break;
1038 case CRISV10_IND_TEST:
1039 LOG_DIS("test size=%d op=%d %d\n", size, dc->src, dc->dst);
1040
1041 cris_evaluate_flags(dc);
1042 cris_cc_mask(dc, CC_MASK_NZVC);
1043 cris_alu_m_alloc_temps(t);
1044 insn_len += dec10_prep_move_m(env, dc, 0, size, t[0]);
1045 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3);
1046 cris_alu(dc, CC_OP_CMP, cpu_R[dc->dst],
1047 t[0], tcg_const_tl(0), size);
1048 cris_alu_m_free_temps(t);
1049 break;
1050 case CRISV10_IND_ADD:
1051 LOG_DIS("add size=%d op=%d %d\n", size, dc->src, dc->dst);
1052 cris_cc_mask(dc, CC_MASK_NZVC);
1053 insn_len += dec10_ind_alu(env, dc, CC_OP_ADD, size);
1054 break;
1055 case CRISV10_IND_SUB:
1056 LOG_DIS("sub size=%d op=%d %d\n", size, dc->src, dc->dst);
1057 cris_cc_mask(dc, CC_MASK_NZVC);
1058 insn_len += dec10_ind_alu(env, dc, CC_OP_SUB, size);
1059 break;
1060 case CRISV10_IND_BOUND:
1061 LOG_DIS("bound size=%d op=%d %d\n", size, dc->src, dc->dst);
1062 cris_cc_mask(dc, CC_MASK_NZVC);
1063 insn_len += dec10_ind_bound(env, dc, size);
1064 break;
1065 case CRISV10_IND_AND:
1066 LOG_DIS("and size=%d op=%d %d\n", size, dc->src, dc->dst);
1067 cris_cc_mask(dc, CC_MASK_NZVC);
1068 insn_len += dec10_ind_alu(env, dc, CC_OP_AND, size);
1069 break;
1070 case CRISV10_IND_OR:
1071 LOG_DIS("or size=%d op=%d %d\n", size, dc->src, dc->dst);
1072 cris_cc_mask(dc, CC_MASK_NZVC);
1073 insn_len += dec10_ind_alu(env, dc, CC_OP_OR, size);
1074 break;
1075 case CRISV10_IND_MOVX:
1076 insn_len = dec10_alux_m(env, dc, CC_OP_MOVE);
1077 break;
1078 case CRISV10_IND_ADDX:
1079 insn_len = dec10_alux_m(env, dc, CC_OP_ADD);
1080 break;
1081 case CRISV10_IND_SUBX:
1082 insn_len = dec10_alux_m(env, dc, CC_OP_SUB);
1083 break;
1084 case CRISV10_IND_CMPX:
1085 insn_len = dec10_alux_m(env, dc, CC_OP_CMP);
1086 break;
1087 case CRISV10_IND_MUL:
1088 /* This is a reg insn coded in the mem indir space. */
1089 LOG_DIS("mul pc=%x opcode=%d\n", dc->pc, dc->opcode);
1090 cris_cc_mask(dc, CC_MASK_NZVC);
1091 dec10_reg_mul(dc, size, dc->ir & (1 << 10));
1092 break;
1093 case CRISV10_IND_BDAP_M:
1094 insn_len = dec10_bdap_m(env, dc, size);
1095 break;
1096 default:
1097 LOG_DIS("pc=%x var-ind.%d %d r%d r%d\n",
1098 dc->pc, size, dc->opcode, dc->src, dc->dst);
1099 cpu_abort(CPU(dc->cpu), "Unhandled opcode");
1100 break;
1101 }
1102 return insn_len;
1103 }
1104
1105 switch (dc->opcode) {
1106 case CRISV10_IND_MOVE_M_SPR:
1107 insn_len = dec10_ind_move_m_pr(env, dc);
1108 break;
1109 case CRISV10_IND_MOVE_SPR_M:
1110 insn_len = dec10_ind_move_pr_m(dc);
1111 break;
1112 case CRISV10_IND_JUMP_M:
1113 if (dc->src == 15) {
1114 LOG_DIS("jump.%d %d r%d r%d direct\n", size,
1115 dc->opcode, dc->src, dc->dst);
1116 imm = cpu_ldl_code(env, dc->pc + 2);
1117 if (dc->mode == CRISV10_MODE_AUTOINC)
1118 insn_len += size;
1119
1120 t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len));
1121 dc->jmp_pc = imm;
1122 cris_prepare_jmp(dc, JMP_DIRECT);
1123 dc->delayed_branch--; /* v10 has no dslot here. */
1124 } else {
1125 if (dc->dst == 14) {
1126 LOG_DIS("break %d\n", dc->src);
1127 cris_evaluate_flags(dc);
1128 tcg_gen_movi_tl(env_pc, dc->pc + 2);
1129 t_gen_mov_env_TN(trap_vector, tcg_const_tl(dc->src + 2));
1130 t_gen_raise_exception(EXCP_BREAK);
1131 dc->is_jmp = DISAS_UPDATE;
1132 return insn_len;
1133 }
1134 LOG_DIS("%d: jump.%d %d r%d r%d\n", __LINE__, size,
1135 dc->opcode, dc->src, dc->dst);
1136 t[0] = tcg_temp_new();
1137 t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len));
1138 crisv10_prepare_memaddr(dc, t[0], size);
1139 gen_load(dc, env_btarget, t[0], 4, 0);
1140 insn_len += crisv10_post_memaddr(dc, size);
1141 cris_prepare_jmp(dc, JMP_INDIRECT);
1142 dc->delayed_branch--; /* v10 has no dslot here. */
1143 tcg_temp_free(t[0]);
1144 }
1145 break;
1146
1147 case CRISV10_IND_MOVEM_R_M:
1148 LOG_DIS("movem_r_m pc=%x opcode=%d r%d r%d\n",
1149 dc->pc, dc->opcode, dc->dst, dc->src);
1150 dec10_movem_r_m(dc);
1151 break;
1152 case CRISV10_IND_MOVEM_M_R:
1153 LOG_DIS("movem_m_r pc=%x opcode=%d\n", dc->pc, dc->opcode);
1154 dec10_movem_m_r(dc);
1155 break;
1156 case CRISV10_IND_JUMP_R:
1157 LOG_DIS("jmp pc=%x opcode=%d r%d r%d\n",
1158 dc->pc, dc->opcode, dc->dst, dc->src);
1159 tcg_gen_mov_tl(env_btarget, cpu_R[dc->src]);
1160 t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len));
1161 cris_prepare_jmp(dc, JMP_INDIRECT);
1162 dc->delayed_branch--; /* v10 has no dslot here. */
1163 break;
1164 case CRISV10_IND_MOVX:
1165 insn_len = dec10_alux_m(env, dc, CC_OP_MOVE);
1166 break;
1167 case CRISV10_IND_ADDX:
1168 insn_len = dec10_alux_m(env, dc, CC_OP_ADD);
1169 break;
1170 case CRISV10_IND_SUBX:
1171 insn_len = dec10_alux_m(env, dc, CC_OP_SUB);
1172 break;
1173 case CRISV10_IND_CMPX:
1174 insn_len = dec10_alux_m(env, dc, CC_OP_CMP);
1175 break;
1176 case CRISV10_IND_DIP:
1177 insn_len = dec10_dip(env, dc);
1178 break;
1179 case CRISV10_IND_BCC_M:
1180
1181 cris_cc_mask(dc, 0);
1182 imm = cpu_ldsw_code(env, dc->pc + 2);
1183 simm = (int16_t)imm;
1184 simm += 4;
1185
1186 LOG_DIS("bcc_m: b%s %x\n", cc_name(dc->cond), dc->pc + simm);
1187 cris_prepare_cc_branch(dc, simm, dc->cond);
1188 insn_len = 4;
1189 break;
1190 default:
1191 LOG_DIS("ERROR pc=%x opcode=%d\n", dc->pc, dc->opcode);
1192 cpu_abort(CPU(dc->cpu), "Unhandled opcode");
1193 break;
1194 }
1195
1196 return insn_len;
1197 }
1198
1199 static unsigned int crisv10_decoder(CPUCRISState *env, DisasContext *dc)
1200 {
1201 unsigned int insn_len = 2;
1202
1203 /* Load a halfword onto the instruction register. */
1204 dc->ir = cpu_lduw_code(env, dc->pc);
1205
1206 /* Now decode it. */
1207 dc->opcode = EXTRACT_FIELD(dc->ir, 6, 9);
1208 dc->mode = EXTRACT_FIELD(dc->ir, 10, 11);
1209 dc->src = EXTRACT_FIELD(dc->ir, 0, 3);
1210 dc->size = EXTRACT_FIELD(dc->ir, 4, 5);
1211 dc->cond = dc->dst = EXTRACT_FIELD(dc->ir, 12, 15);
1212 dc->postinc = EXTRACT_FIELD(dc->ir, 10, 10);
1213
1214 dc->clear_prefix = 1;
1215
1216 /* FIXME: What if this insn insn't 2 in length?? */
1217 if (dc->src == 15 || dc->dst == 15)
1218 tcg_gen_movi_tl(cpu_R[15], dc->pc + 2);
1219
1220 switch (dc->mode) {
1221 case CRISV10_MODE_QIMMEDIATE:
1222 insn_len = dec10_quick_imm(dc);
1223 break;
1224 case CRISV10_MODE_REG:
1225 insn_len = dec10_reg(dc);
1226 break;
1227 case CRISV10_MODE_AUTOINC:
1228 case CRISV10_MODE_INDIRECT:
1229 insn_len = dec10_ind(env, dc);
1230 break;
1231 }
1232
1233 if (dc->clear_prefix && dc->tb_flags & PFIX_FLAG) {
1234 dc->tb_flags &= ~PFIX_FLAG;
1235 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~PFIX_FLAG);
1236 if (dc->tb_flags != dc->tb->flags) {
1237 dc->cpustate_changed = 1;
1238 }
1239 }
1240
1241 /* CRISv10 locks out interrupts on dslots. */
1242 if (dc->delayed_branch == 2) {
1243 cris_lock_irq(dc);
1244 }
1245 return insn_len;
1246 }
1247
1248 void cris_initialize_crisv10_tcg(void)
1249 {
1250 int i;
1251
1252 cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
1253 tcg_ctx.tcg_env = cpu_env;
1254 cc_x = tcg_global_mem_new(cpu_env,
1255 offsetof(CPUCRISState, cc_x), "cc_x");
1256 cc_src = tcg_global_mem_new(cpu_env,
1257 offsetof(CPUCRISState, cc_src), "cc_src");
1258 cc_dest = tcg_global_mem_new(cpu_env,
1259 offsetof(CPUCRISState, cc_dest),
1260 "cc_dest");
1261 cc_result = tcg_global_mem_new(cpu_env,
1262 offsetof(CPUCRISState, cc_result),
1263 "cc_result");
1264 cc_op = tcg_global_mem_new(cpu_env,
1265 offsetof(CPUCRISState, cc_op), "cc_op");
1266 cc_size = tcg_global_mem_new(cpu_env,
1267 offsetof(CPUCRISState, cc_size),
1268 "cc_size");
1269 cc_mask = tcg_global_mem_new(cpu_env,
1270 offsetof(CPUCRISState, cc_mask),
1271 "cc_mask");
1272
1273 env_pc = tcg_global_mem_new(cpu_env,
1274 offsetof(CPUCRISState, pc),
1275 "pc");
1276 env_btarget = tcg_global_mem_new(cpu_env,
1277 offsetof(CPUCRISState, btarget),
1278 "btarget");
1279 env_btaken = tcg_global_mem_new(cpu_env,
1280 offsetof(CPUCRISState, btaken),
1281 "btaken");
1282 for (i = 0; i < 16; i++) {
1283 cpu_R[i] = tcg_global_mem_new(cpu_env,
1284 offsetof(CPUCRISState, regs[i]),
1285 regnames_v10[i]);
1286 }
1287 for (i = 0; i < 16; i++) {
1288 cpu_PR[i] = tcg_global_mem_new(cpu_env,
1289 offsetof(CPUCRISState, pregs[i]),
1290 pregnames_v10[i]);
1291 }
1292 }
AR7 emulation for QEMU