2 * CRISv10 emulation for qemu: main translation routines.
4 * Copyright (c) 2010 AXIS Communications AB
5 * Written by Edgar E. Iglesias.
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 2.1 of the License, or (at your option) any later version.
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.
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/>.
21 #include "qemu/osdep.h"
22 #include "crisv10-decode.h"
24 static const char *regnames_v10[] =
26 "$r0", "$r1", "$r2", "$r3",
27 "$r4", "$r5", "$r6", "$r7",
28 "$r8", "$r9", "$r10", "$r11",
29 "$r12", "$r13", "$sp", "$pc",
32 static const char *pregnames_v10[] =
34 "$bz", "$vr", "$p2", "$p3",
35 "$wz", "$ccr", "$p6-prefix", "$mof",
36 "$dz", "$ibr", "$irp", "$srp",
37 "$bar", "$dccr", "$brp", "$usp",
40 /* We need this table to handle preg-moves with implicit width. */
41 static int preg_sizes_v10[] = {
52 static inline int dec10_size(unsigned int size)
60 static inline void cris_illegal_insn(DisasContext *dc)
62 qemu_log_mask(LOG_GUEST_ERROR, "illegal insn at pc=%x\n", dc->pc);
63 t_gen_raise_exception(EXCP_BREAK);
64 dc->base.is_jmp = DISAS_NORETURN;
67 static void gen_store_v10_conditional(DisasContext *dc, TCGv addr, TCGv val,
68 unsigned int size, int mem_index)
70 TCGLabel *l1 = gen_new_label();
71 TCGv taddr = tcg_temp_local_new();
72 TCGv tval = tcg_temp_local_new();
73 TCGv t1 = tcg_temp_local_new();
75 cris_evaluate_flags(dc);
77 tcg_gen_mov_tl(taddr, addr);
78 tcg_gen_mov_tl(tval, val);
80 /* Store only if F flag isn't set */
81 tcg_gen_andi_tl(t1, cpu_PR[PR_CCS], F_FLAG_V10);
82 tcg_gen_brcondi_tl(TCG_COND_NE, t1, 0, l1);
84 tcg_gen_qemu_st8(tval, taddr, mem_index);
85 } else if (size == 2) {
86 tcg_gen_qemu_st16(tval, taddr, mem_index);
88 tcg_gen_qemu_st32(tval, taddr, mem_index);
91 tcg_gen_shri_tl(t1, t1, 1); /* shift F to P position */
92 tcg_gen_or_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], t1); /*P=F*/
98 static void gen_store_v10(DisasContext *dc, TCGv addr, TCGv val,
101 int mem_index = cpu_mmu_index(&dc->cpu->env, false);
103 /* If we get a fault on a delayslot we must keep the jmp state in
104 the cpu-state to be able to re-execute the jmp. */
105 if (dc->delayed_branch == 1) {
106 cris_store_direct_jmp(dc);
109 /* Conditional writes. We only support the kind were X is known
110 at translation time. */
111 if (dc->flagx_known && dc->flags_x) {
112 gen_store_v10_conditional(dc, addr, val, size, mem_index);
117 tcg_gen_qemu_st8(val, addr, mem_index);
118 } else if (size == 2) {
119 tcg_gen_qemu_st16(val, addr, mem_index);
121 tcg_gen_qemu_st32(val, addr, mem_index);
126 /* Prefix flag and register are used to handle the more complex
128 static void cris_set_prefix(DisasContext *dc)
130 dc->clear_prefix = 0;
131 dc->tb_flags |= PFIX_FLAG;
132 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], PFIX_FLAG);
134 /* prefix insns don't clear the x flag. */
139 static void crisv10_prepare_memaddr(DisasContext *dc,
140 TCGv addr, unsigned int size)
142 if (dc->tb_flags & PFIX_FLAG) {
143 tcg_gen_mov_tl(addr, cpu_PR[PR_PREFIX]);
145 tcg_gen_mov_tl(addr, cpu_R[dc->src]);
149 static unsigned int crisv10_post_memaddr(DisasContext *dc, unsigned int size)
151 unsigned int insn_len = 0;
153 if (dc->tb_flags & PFIX_FLAG) {
154 if (dc->mode == CRISV10_MODE_AUTOINC) {
155 tcg_gen_mov_tl(cpu_R[dc->src], cpu_PR[PR_PREFIX]);
158 if (dc->mode == CRISV10_MODE_AUTOINC) {
160 insn_len += size & ~1;
162 tcg_gen_addi_tl(cpu_R[dc->src], cpu_R[dc->src], size);
169 static int dec10_prep_move_m(CPUCRISState *env, DisasContext *dc,
170 int s_ext, int memsize, TCGv dst)
178 is_imm = rs == 15 && !(dc->tb_flags & PFIX_FLAG);
179 LOG_DIS("rs=%d rd=%d is_imm=%d mode=%d pfix=%d\n",
180 rs, dc->dst, is_imm, dc->mode, dc->tb_flags & PFIX_FLAG);
182 /* Load [$rs] onto T1. */
187 imm = cpu_ldsb_code(env, dc->pc + 2);
189 imm = cpu_ldsw_code(env, dc->pc + 2);
192 imm = cpu_ldub_code(env, dc->pc + 2);
194 imm = cpu_lduw_code(env, dc->pc + 2);
197 imm = cpu_ldl_code(env, dc->pc + 2);
199 tcg_gen_movi_tl(dst, imm);
201 if (dc->mode == CRISV10_MODE_AUTOINC) {
205 tcg_gen_addi_tl(cpu_R[15], cpu_R[15], insn_len);
210 addr = tcg_temp_new();
211 cris_flush_cc_state(dc);
212 crisv10_prepare_memaddr(dc, addr, memsize);
213 gen_load(dc, dst, addr, memsize, 0);
215 t_gen_sext(dst, dst, memsize);
217 t_gen_zext(dst, dst, memsize);
218 insn_len += crisv10_post_memaddr(dc, memsize);
222 if (dc->mode == CRISV10_MODE_INDIRECT && (dc->tb_flags & PFIX_FLAG)) {
228 static unsigned int dec10_quick_imm(DisasContext *dc)
235 imm = dc->ir & ((1 << 6) - 1);
236 simm = (int8_t) (imm << 2);
238 switch (dc->opcode) {
239 case CRISV10_QIMM_BDAP_R0:
240 case CRISV10_QIMM_BDAP_R1:
241 case CRISV10_QIMM_BDAP_R2:
242 case CRISV10_QIMM_BDAP_R3:
243 simm = (int8_t)dc->ir;
244 LOG_DIS("bdap %d $r%d\n", simm, dc->dst);
245 LOG_DIS("pc=%x mode=%x quickimm %d r%d r%d\n",
246 dc->pc, dc->mode, dc->opcode, dc->src, dc->dst);
249 tcg_gen_movi_tl(cpu_PR[PR_PREFIX], dc->pc + 2 + simm);
251 tcg_gen_addi_tl(cpu_PR[PR_PREFIX], cpu_R[dc->dst], simm);
255 case CRISV10_QIMM_MOVEQ:
256 LOG_DIS("moveq %d, $r%d\n", simm, dc->dst);
258 cris_cc_mask(dc, CC_MASK_NZVC);
259 c = tcg_const_tl(simm);
260 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst],
261 cpu_R[dc->dst], c, 4);
264 case CRISV10_QIMM_CMPQ:
265 LOG_DIS("cmpq %d, $r%d\n", simm, dc->dst);
267 cris_cc_mask(dc, CC_MASK_NZVC);
268 c = tcg_const_tl(simm);
269 cris_alu(dc, CC_OP_CMP, cpu_R[dc->dst],
270 cpu_R[dc->dst], c, 4);
273 case CRISV10_QIMM_ADDQ:
274 LOG_DIS("addq %d, $r%d\n", imm, dc->dst);
276 cris_cc_mask(dc, CC_MASK_NZVC);
277 c = tcg_const_tl(imm);
278 cris_alu(dc, CC_OP_ADD, cpu_R[dc->dst],
279 cpu_R[dc->dst], c, 4);
282 case CRISV10_QIMM_ANDQ:
283 LOG_DIS("andq %d, $r%d\n", simm, dc->dst);
285 cris_cc_mask(dc, CC_MASK_NZVC);
286 c = tcg_const_tl(simm);
287 cris_alu(dc, CC_OP_AND, cpu_R[dc->dst],
288 cpu_R[dc->dst], c, 4);
291 case CRISV10_QIMM_ASHQ:
292 LOG_DIS("ashq %d, $r%d\n", simm, dc->dst);
294 cris_cc_mask(dc, CC_MASK_NZVC);
297 c = tcg_const_tl(imm);
299 cris_alu(dc, CC_OP_ASR, cpu_R[dc->dst],
300 cpu_R[dc->dst], c, 4);
303 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
304 gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->dst],
309 case CRISV10_QIMM_LSHQ:
310 LOG_DIS("lshq %d, $r%d\n", simm, dc->dst);
313 if (imm & (1 << 5)) {
317 cris_cc_mask(dc, CC_MASK_NZVC);
318 c = tcg_const_tl(imm);
319 cris_alu(dc, op, cpu_R[dc->dst],
320 cpu_R[dc->dst], c, 4);
323 case CRISV10_QIMM_SUBQ:
324 LOG_DIS("subq %d, $r%d\n", imm, dc->dst);
326 cris_cc_mask(dc, CC_MASK_NZVC);
327 c = tcg_const_tl(imm);
328 cris_alu(dc, CC_OP_SUB, cpu_R[dc->dst],
329 cpu_R[dc->dst], c, 4);
332 case CRISV10_QIMM_ORQ:
333 LOG_DIS("andq %d, $r%d\n", simm, dc->dst);
335 cris_cc_mask(dc, CC_MASK_NZVC);
336 c = tcg_const_tl(simm);
337 cris_alu(dc, CC_OP_OR, cpu_R[dc->dst],
338 cpu_R[dc->dst], c, 4);
342 case CRISV10_QIMM_BCC_R0:
343 case CRISV10_QIMM_BCC_R1:
344 case CRISV10_QIMM_BCC_R2:
345 case CRISV10_QIMM_BCC_R3:
347 /* bit 0 is a sign bit. */
349 imm |= 0xffffff00; /* sign extend. */
350 imm &= ~1; /* get rid of the sign bit. */
353 LOG_DIS("b%s %d\n", cc_name(dc->cond), imm);
356 cris_prepare_cc_branch(dc, imm, dc->cond);
360 LOG_DIS("pc=%x mode=%x quickimm %d r%d r%d\n",
361 dc->pc, dc->mode, dc->opcode, dc->src, dc->dst);
362 cpu_abort(CPU(dc->cpu), "Unhandled quickimm\n");
368 static unsigned int dec10_setclrf(DisasContext *dc)
371 unsigned int set = ~dc->opcode & 1;
373 flags = EXTRACT_FIELD(dc->ir, 0, 3)
374 | (EXTRACT_FIELD(dc->ir, 12, 15) << 4);
375 LOG_DIS("%s set=%d flags=%x\n", __func__, set, flags);
378 if (flags & X_FLAG) {
381 dc->flags_x = X_FLAG;
386 cris_evaluate_flags (dc);
387 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
388 cris_update_cc_x(dc);
389 tcg_gen_movi_tl(cc_op, dc->cc_op);
392 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags);
394 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS],
395 ~(flags|F_FLAG_V10|P_FLAG_V10));
398 dc->flags_uptodate = 1;
404 static inline void dec10_reg_prep_sext(DisasContext *dc, int size, int sext,
405 TCGv dd, TCGv ds, TCGv sd, TCGv ss)
408 t_gen_sext(dd, sd, size);
409 t_gen_sext(ds, ss, size);
411 t_gen_zext(dd, sd, size);
412 t_gen_zext(ds, ss, size);
416 static void dec10_reg_alu(DisasContext *dc, int op, int size, int sext)
420 t[0] = tcg_temp_new();
421 t[1] = tcg_temp_new();
422 dec10_reg_prep_sext(dc, size, sext,
423 t[0], t[1], cpu_R[dc->dst], cpu_R[dc->src]);
425 if (op == CC_OP_LSL || op == CC_OP_LSR || op == CC_OP_ASR) {
426 tcg_gen_andi_tl(t[1], t[1], 63);
429 assert(dc->dst != 15);
430 cris_alu(dc, op, cpu_R[dc->dst], t[0], t[1], size);
435 static void dec10_reg_bound(DisasContext *dc, int size)
439 t = tcg_temp_local_new();
440 t_gen_zext(t, cpu_R[dc->src], size);
441 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
445 static void dec10_reg_mul(DisasContext *dc, int size, int sext)
447 int op = sext ? CC_OP_MULS : CC_OP_MULU;
450 t[0] = tcg_temp_new();
451 t[1] = tcg_temp_new();
452 dec10_reg_prep_sext(dc, size, sext,
453 t[0], t[1], cpu_R[dc->dst], cpu_R[dc->src]);
455 cris_alu(dc, op, cpu_R[dc->dst], t[0], t[1], 4);
462 static void dec10_reg_movs(DisasContext *dc)
464 int size = (dc->size & 1) + 1;
467 LOG_DIS("movx.%d $r%d, $r%d\n", size, dc->src, dc->dst);
468 cris_cc_mask(dc, CC_MASK_NZVC);
472 t_gen_sext(t, cpu_R[dc->src], size);
474 t_gen_zext(t, cpu_R[dc->src], size);
476 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
480 static void dec10_reg_alux(DisasContext *dc, int op)
482 int size = (dc->size & 1) + 1;
485 LOG_DIS("movx.%d $r%d, $r%d\n", size, dc->src, dc->dst);
486 cris_cc_mask(dc, CC_MASK_NZVC);
490 t_gen_sext(t, cpu_R[dc->src], size);
492 t_gen_zext(t, cpu_R[dc->src], size);
494 cris_alu(dc, op, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
498 static void dec10_reg_mov_pr(DisasContext *dc)
500 LOG_DIS("move p%d r%d sz=%d\n", dc->dst, dc->src, preg_sizes_v10[dc->dst]);
503 tcg_gen_mov_tl(env_btarget, cpu_PR[dc->dst]);
504 cris_prepare_jmp(dc, JMP_INDIRECT);
507 if (dc->dst == PR_CCS) {
508 cris_evaluate_flags(dc);
510 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->src],
511 cpu_R[dc->src], cpu_PR[dc->dst], preg_sizes_v10[dc->dst]);
514 static void dec10_reg_abs(DisasContext *dc)
518 LOG_DIS("abs $r%u, $r%u\n", dc->src, dc->dst);
520 assert(dc->dst != 15);
522 tcg_gen_sari_tl(t0, cpu_R[dc->src], 31);
523 tcg_gen_xor_tl(cpu_R[dc->dst], cpu_R[dc->src], t0);
524 tcg_gen_sub_tl(t0, cpu_R[dc->dst], t0);
526 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t0, 4);
530 static void dec10_reg_swap(DisasContext *dc)
534 LOG_DIS("not $r%d, $r%d\n", dc->src, dc->dst);
536 cris_cc_mask(dc, CC_MASK_NZVC);
538 tcg_gen_mov_tl(t0, cpu_R[dc->src]);
540 tcg_gen_not_tl(t0, t0);
547 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->src], cpu_R[dc->src], t0, 4);
551 static void dec10_reg_scc(DisasContext *dc)
555 LOG_DIS("s%s $r%u\n", cc_name(cond), dc->src);
557 gen_tst_cc(dc, cpu_R[dc->src], cond);
558 tcg_gen_setcondi_tl(TCG_COND_NE, cpu_R[dc->src], cpu_R[dc->src], 0);
563 static unsigned int dec10_reg(DisasContext *dc)
566 unsigned int insn_len = 2;
567 unsigned int size = dec10_size(dc->size);
571 switch (dc->opcode) {
572 case CRISV10_REG_MOVE_R:
573 LOG_DIS("move.%d $r%d, $r%d\n", dc->size, dc->src, dc->dst);
574 cris_cc_mask(dc, CC_MASK_NZVC);
575 dec10_reg_alu(dc, CC_OP_MOVE, size, 0);
577 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
578 cris_prepare_jmp(dc, JMP_INDIRECT);
579 dc->delayed_branch = 1;
582 case CRISV10_REG_MOVX:
583 cris_cc_mask(dc, CC_MASK_NZVC);
586 case CRISV10_REG_ADDX:
587 cris_cc_mask(dc, CC_MASK_NZVC);
588 dec10_reg_alux(dc, CC_OP_ADD);
590 case CRISV10_REG_SUBX:
591 cris_cc_mask(dc, CC_MASK_NZVC);
592 dec10_reg_alux(dc, CC_OP_SUB);
594 case CRISV10_REG_ADD:
595 LOG_DIS("add $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
596 cris_cc_mask(dc, CC_MASK_NZVC);
597 dec10_reg_alu(dc, CC_OP_ADD, size, 0);
599 case CRISV10_REG_SUB:
600 LOG_DIS("sub $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
601 cris_cc_mask(dc, CC_MASK_NZVC);
602 dec10_reg_alu(dc, CC_OP_SUB, size, 0);
604 case CRISV10_REG_CMP:
605 LOG_DIS("cmp $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
606 cris_cc_mask(dc, CC_MASK_NZVC);
607 dec10_reg_alu(dc, CC_OP_CMP, size, 0);
609 case CRISV10_REG_BOUND:
610 LOG_DIS("bound $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
611 cris_cc_mask(dc, CC_MASK_NZVC);
612 dec10_reg_bound(dc, size);
614 case CRISV10_REG_AND:
615 LOG_DIS("and $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
616 cris_cc_mask(dc, CC_MASK_NZVC);
617 dec10_reg_alu(dc, CC_OP_AND, size, 0);
619 case CRISV10_REG_ADDI:
625 LOG_DIS("addi r%d r%d size=%d\n", dc->src, dc->dst, dc->size);
626 tcg_gen_shli_tl(t, cpu_R[dc->dst], dc->size & 3);
627 tcg_gen_add_tl(cpu_R[dc->src], cpu_R[dc->src], t);
630 case CRISV10_REG_LSL:
631 LOG_DIS("lsl $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
632 cris_cc_mask(dc, CC_MASK_NZVC);
633 dec10_reg_alu(dc, CC_OP_LSL, size, 0);
635 case CRISV10_REG_LSR:
636 LOG_DIS("lsr $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
637 cris_cc_mask(dc, CC_MASK_NZVC);
638 dec10_reg_alu(dc, CC_OP_LSR, size, 0);
640 case CRISV10_REG_ASR:
641 LOG_DIS("asr $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
642 cris_cc_mask(dc, CC_MASK_NZVC);
643 dec10_reg_alu(dc, CC_OP_ASR, size, 1);
646 LOG_DIS("or $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
647 cris_cc_mask(dc, CC_MASK_NZVC);
648 dec10_reg_alu(dc, CC_OP_OR, size, 0);
650 case CRISV10_REG_NEG:
651 LOG_DIS("neg $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
652 cris_cc_mask(dc, CC_MASK_NZVC);
653 dec10_reg_alu(dc, CC_OP_NEG, size, 0);
655 case CRISV10_REG_BIAP:
656 LOG_DIS("BIAP pc=%x reg %d r%d r%d size=%d\n", dc->pc,
657 dc->opcode, dc->src, dc->dst, size);
659 case 4: tmp = 2; break;
660 case 2: tmp = 1; break;
661 case 1: tmp = 0; break;
663 cpu_abort(CPU(dc->cpu), "Unhandled BIAP");
668 tcg_gen_shli_tl(t, cpu_R[dc->dst], tmp);
670 tcg_gen_addi_tl(cpu_PR[PR_PREFIX], t, ((dc->pc +2)| 1) + 1);
672 tcg_gen_add_tl(cpu_PR[PR_PREFIX], cpu_R[dc->src], t);
679 LOG_DIS("pc=%x reg %d r%d r%d\n", dc->pc,
680 dc->opcode, dc->src, dc->dst);
681 cpu_abort(CPU(dc->cpu), "Unhandled opcode");
685 switch (dc->opcode) {
686 case CRISV10_REG_MOVX:
687 cris_cc_mask(dc, CC_MASK_NZVC);
690 case CRISV10_REG_ADDX:
691 cris_cc_mask(dc, CC_MASK_NZVC);
692 dec10_reg_alux(dc, CC_OP_ADD);
694 case CRISV10_REG_SUBX:
695 cris_cc_mask(dc, CC_MASK_NZVC);
696 dec10_reg_alux(dc, CC_OP_SUB);
698 case CRISV10_REG_MOVE_SPR_R:
699 cris_evaluate_flags(dc);
701 dec10_reg_mov_pr(dc);
703 case CRISV10_REG_MOVE_R_SPR:
704 LOG_DIS("move r%d p%d\n", dc->src, dc->dst);
705 cris_evaluate_flags(dc);
706 if (dc->src != 11) /* fast for srp. */
707 dc->cpustate_changed = 1;
708 t_gen_mov_preg_TN(dc, dc->dst, cpu_R[dc->src]);
710 case CRISV10_REG_SETF:
711 case CRISV10_REG_CLEARF:
714 case CRISV10_REG_SWAP:
717 case CRISV10_REG_ABS:
718 cris_cc_mask(dc, CC_MASK_NZVC);
722 LOG_DIS("lz $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
723 cris_cc_mask(dc, CC_MASK_NZVC);
724 dec10_reg_alu(dc, CC_OP_LZ, 4, 0);
726 case CRISV10_REG_XOR:
727 LOG_DIS("xor $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
728 cris_cc_mask(dc, CC_MASK_NZVC);
729 dec10_reg_alu(dc, CC_OP_XOR, 4, 0);
731 case CRISV10_REG_BTST:
732 LOG_DIS("btst $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
733 cris_cc_mask(dc, CC_MASK_NZVC);
734 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
735 gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->dst],
736 cpu_R[dc->src], cpu_PR[PR_CCS]);
738 case CRISV10_REG_DSTEP:
739 LOG_DIS("dstep $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
740 cris_cc_mask(dc, CC_MASK_NZVC);
741 cris_alu(dc, CC_OP_DSTEP, cpu_R[dc->dst],
742 cpu_R[dc->dst], cpu_R[dc->src], 4);
744 case CRISV10_REG_MSTEP:
745 LOG_DIS("mstep $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
746 cris_evaluate_flags(dc);
747 cris_cc_mask(dc, CC_MASK_NZVC);
748 cris_alu(dc, CC_OP_MSTEP, cpu_R[dc->dst],
749 cpu_R[dc->dst], cpu_R[dc->src], 4);
751 case CRISV10_REG_SCC:
755 LOG_DIS("pc=%x reg %d r%d r%d\n", dc->pc,
756 dc->opcode, dc->src, dc->dst);
757 cpu_abort(CPU(dc->cpu), "Unhandled opcode");
764 static unsigned int dec10_ind_move_m_r(CPUCRISState *env, DisasContext *dc,
767 unsigned int insn_len = 2;
770 LOG_DIS("%s: move.%d [$r%d], $r%d\n", __func__,
771 size, dc->src, dc->dst);
773 cris_cc_mask(dc, CC_MASK_NZVC);
775 insn_len += dec10_prep_move_m(env, dc, 0, size, t);
776 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t, size);
778 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
779 cris_prepare_jmp(dc, JMP_INDIRECT);
780 dc->delayed_branch = 1;
787 static unsigned int dec10_ind_move_r_m(DisasContext *dc, unsigned int size)
789 unsigned int insn_len = 2;
792 LOG_DIS("move.%d $r%d, [$r%d]\n", dc->size, dc->src, dc->dst);
793 addr = tcg_temp_new();
794 crisv10_prepare_memaddr(dc, addr, size);
795 gen_store_v10(dc, addr, cpu_R[dc->dst], size);
796 insn_len += crisv10_post_memaddr(dc, size);
802 static unsigned int dec10_ind_move_m_pr(CPUCRISState *env, DisasContext *dc)
804 unsigned int insn_len = 2, rd = dc->dst;
807 LOG_DIS("move.%d $p%d, [$r%d]\n", dc->size, dc->dst, dc->src);
810 addr = tcg_temp_new();
812 insn_len += dec10_prep_move_m(env, dc, 0, 4, t);
814 tcg_gen_mov_tl(env_btarget, t);
815 cris_prepare_jmp(dc, JMP_INDIRECT);
816 dc->delayed_branch = 1;
818 tcg_gen_mov_tl(cpu_PR[rd], t);
819 dc->cpustate_changed = 1;
826 static unsigned int dec10_ind_move_pr_m(DisasContext *dc)
828 unsigned int insn_len = 2, size = preg_sizes_v10[dc->dst];
831 LOG_DIS("move.%d $p%d, [$r%d]\n", dc->size, dc->dst, dc->src);
833 addr = tcg_temp_new();
834 crisv10_prepare_memaddr(dc, addr, size);
835 if (dc->dst == PR_CCS) {
837 cris_evaluate_flags(dc);
838 tcg_gen_andi_tl(t0, cpu_PR[PR_CCS], ~PFIX_FLAG);
839 gen_store_v10(dc, addr, t0, size);
842 gen_store_v10(dc, addr, cpu_PR[dc->dst], size);
844 insn_len += crisv10_post_memaddr(dc, size);
851 static void dec10_movem_r_m(DisasContext *dc)
853 int i, pfix = dc->tb_flags & PFIX_FLAG;
856 LOG_DIS("%s r%d, [r%d] pi=%d ir=%x\n", __func__,
857 dc->dst, dc->src, dc->postinc, dc->ir);
859 addr = tcg_temp_new();
861 crisv10_prepare_memaddr(dc, addr, 4);
862 tcg_gen_mov_tl(t0, addr);
863 for (i = dc->dst; i >= 0; i--) {
864 if ((pfix && dc->mode == CRISV10_MODE_AUTOINC) && dc->src == i) {
865 gen_store_v10(dc, addr, t0, 4);
867 gen_store_v10(dc, addr, cpu_R[i], 4);
869 tcg_gen_addi_tl(addr, addr, 4);
872 if (pfix && dc->mode == CRISV10_MODE_AUTOINC) {
873 tcg_gen_mov_tl(cpu_R[dc->src], t0);
876 if (!pfix && dc->mode == CRISV10_MODE_AUTOINC) {
877 tcg_gen_mov_tl(cpu_R[dc->src], addr);
883 static void dec10_movem_m_r(DisasContext *dc)
885 int i, pfix = dc->tb_flags & PFIX_FLAG;
888 LOG_DIS("%s [r%d], r%d pi=%d ir=%x\n", __func__,
889 dc->src, dc->dst, dc->postinc, dc->ir);
891 addr = tcg_temp_new();
893 crisv10_prepare_memaddr(dc, addr, 4);
894 tcg_gen_mov_tl(t0, addr);
895 for (i = dc->dst; i >= 0; i--) {
896 gen_load(dc, cpu_R[i], addr, 4, 0);
897 tcg_gen_addi_tl(addr, addr, 4);
900 if (pfix && dc->mode == CRISV10_MODE_AUTOINC) {
901 tcg_gen_mov_tl(cpu_R[dc->src], t0);
904 if (!pfix && dc->mode == CRISV10_MODE_AUTOINC) {
905 tcg_gen_mov_tl(cpu_R[dc->src], addr);
911 static int dec10_ind_alu(CPUCRISState *env, DisasContext *dc,
912 int op, unsigned int size)
918 cris_alu_m_alloc_temps(t);
919 insn_len += dec10_prep_move_m(env, dc, 0, size, t[0]);
920 cris_alu(dc, op, cpu_R[dc->dst], cpu_R[rd], t[0], size);
922 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
923 cris_prepare_jmp(dc, JMP_INDIRECT);
924 dc->delayed_branch = 1;
928 cris_alu_m_free_temps(t);
933 static int dec10_ind_bound(CPUCRISState *env, DisasContext *dc,
940 t = tcg_temp_local_new();
941 insn_len += dec10_prep_move_m(env, dc, 0, size, t);
942 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->dst], cpu_R[rd], t, 4);
944 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
945 cris_prepare_jmp(dc, JMP_INDIRECT);
946 dc->delayed_branch = 1;
953 static int dec10_alux_m(CPUCRISState *env, DisasContext *dc, int op)
955 unsigned int size = (dc->size & 1) ? 2 : 1;
956 unsigned int sx = !!(dc->size & 2);
961 LOG_DIS("addx size=%d sx=%d op=%d %d\n", size, sx, dc->src, dc->dst);
965 cris_cc_mask(dc, CC_MASK_NZVC);
966 insn_len += dec10_prep_move_m(env, dc, sx, size, t);
967 cris_alu(dc, op, cpu_R[dc->dst], cpu_R[rd], t, 4);
969 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
970 cris_prepare_jmp(dc, JMP_INDIRECT);
971 dc->delayed_branch = 1;
978 static int dec10_dip(CPUCRISState *env, DisasContext *dc)
983 LOG_DIS("dip pc=%x opcode=%d r%d r%d\n",
984 dc->pc, dc->opcode, dc->src, dc->dst);
986 imm = cpu_ldl_code(env, dc->pc + 2);
987 tcg_gen_movi_tl(cpu_PR[PR_PREFIX], imm);
990 tcg_gen_addi_tl(cpu_R[15], cpu_R[15], insn_len - 2);
992 gen_load(dc, cpu_PR[PR_PREFIX], cpu_R[dc->src], 4, 0);
994 tcg_gen_addi_tl(cpu_R[dc->src], cpu_R[dc->src], 4);
1001 static int dec10_bdap_m(CPUCRISState *env, DisasContext *dc, int size)
1006 LOG_DIS("bdap_m pc=%x opcode=%d r%d r%d sz=%d\n",
1007 dc->pc, dc->opcode, dc->src, dc->dst, size);
1009 assert(dc->dst != 15);
1011 /* 8bit embedded offset? */
1012 if (!dc->postinc && (dc->ir & (1 << 11))) {
1013 int simm = dc->ir & 0xff;
1015 /* cpu_abort(CPU(dc->cpu), "Unhandled opcode"); */
1016 /* sign extended. */
1017 simm = (int8_t)simm;
1019 tcg_gen_addi_tl(cpu_PR[PR_PREFIX], cpu_R[dc->dst], simm);
1021 cris_set_prefix(dc);
1025 /* Now the rest of the modes are truly indirect. */
1026 insn_len += dec10_prep_move_m(env, dc, 1, size, cpu_PR[PR_PREFIX]);
1027 tcg_gen_add_tl(cpu_PR[PR_PREFIX], cpu_PR[PR_PREFIX], cpu_R[rd]);
1028 cris_set_prefix(dc);
1032 static unsigned int dec10_ind(CPUCRISState *env, DisasContext *dc)
1034 unsigned int insn_len = 2;
1035 unsigned int size = dec10_size(dc->size);
1040 if (dc->size != 3) {
1041 switch (dc->opcode) {
1042 case CRISV10_IND_MOVE_M_R:
1043 return dec10_ind_move_m_r(env, dc, size);
1044 case CRISV10_IND_MOVE_R_M:
1045 return dec10_ind_move_r_m(dc, size);
1046 case CRISV10_IND_CMP:
1047 LOG_DIS("cmp size=%d op=%d %d\n", size, dc->src, dc->dst);
1048 cris_cc_mask(dc, CC_MASK_NZVC);
1049 insn_len += dec10_ind_alu(env, dc, CC_OP_CMP, size);
1051 case CRISV10_IND_TEST:
1052 LOG_DIS("test size=%d op=%d %d\n", size, dc->src, dc->dst);
1054 cris_evaluate_flags(dc);
1055 cris_cc_mask(dc, CC_MASK_NZVC);
1056 cris_alu_m_alloc_temps(t);
1057 insn_len += dec10_prep_move_m(env, dc, 0, size, t[0]);
1058 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3);
1059 c = tcg_const_tl(0);
1060 cris_alu(dc, CC_OP_CMP, cpu_R[dc->dst],
1063 cris_alu_m_free_temps(t);
1065 case CRISV10_IND_ADD:
1066 LOG_DIS("add 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_ADD, size);
1070 case CRISV10_IND_SUB:
1071 LOG_DIS("sub 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_SUB, size);
1075 case CRISV10_IND_BOUND:
1076 LOG_DIS("bound size=%d op=%d %d\n", size, dc->src, dc->dst);
1077 cris_cc_mask(dc, CC_MASK_NZVC);
1078 insn_len += dec10_ind_bound(env, dc, size);
1080 case CRISV10_IND_AND:
1081 LOG_DIS("and size=%d op=%d %d\n", size, dc->src, dc->dst);
1082 cris_cc_mask(dc, CC_MASK_NZVC);
1083 insn_len += dec10_ind_alu(env, dc, CC_OP_AND, size);
1085 case CRISV10_IND_OR:
1086 LOG_DIS("or size=%d op=%d %d\n", size, dc->src, dc->dst);
1087 cris_cc_mask(dc, CC_MASK_NZVC);
1088 insn_len += dec10_ind_alu(env, dc, CC_OP_OR, size);
1090 case CRISV10_IND_MOVX:
1091 insn_len = dec10_alux_m(env, dc, CC_OP_MOVE);
1093 case CRISV10_IND_ADDX:
1094 insn_len = dec10_alux_m(env, dc, CC_OP_ADD);
1096 case CRISV10_IND_SUBX:
1097 insn_len = dec10_alux_m(env, dc, CC_OP_SUB);
1099 case CRISV10_IND_CMPX:
1100 insn_len = dec10_alux_m(env, dc, CC_OP_CMP);
1102 case CRISV10_IND_MUL:
1103 /* This is a reg insn coded in the mem indir space. */
1104 LOG_DIS("mul pc=%x opcode=%d\n", dc->pc, dc->opcode);
1105 cris_cc_mask(dc, CC_MASK_NZVC);
1106 dec10_reg_mul(dc, size, dc->ir & (1 << 10));
1108 case CRISV10_IND_BDAP_M:
1109 insn_len = dec10_bdap_m(env, dc, size);
1115 * Instruction format: ADDC [Rs],Rd
1117 * +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+-+
1118 * |Destination(Rd)| 1 0 0 1 1 0 1 0 | Source(Rs)|
1119 * +---+---+---+---+---+---+---+---+---+---+---+---+---+---+--+--+
1121 * Instruction format: ADDC [Rs+],Rd
1123 * +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+-+
1124 * |Destination(Rd)| 1 1 0 1 1 0 1 0 | Source(Rs)|
1125 * +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+-+
1127 if (dc->opcode == CRISV17_IND_ADDC && dc->size == 2 &&
1128 env->pregs[PR_VR] == 17) {
1129 LOG_DIS("addc op=%d %d\n", dc->src, dc->dst);
1130 cris_cc_mask(dc, CC_MASK_NZVC);
1131 insn_len += dec10_ind_alu(env, dc, CC_OP_ADDC, size);
1135 LOG_DIS("pc=%x var-ind.%d %d r%d r%d\n",
1136 dc->pc, size, dc->opcode, dc->src, dc->dst);
1137 cpu_abort(CPU(dc->cpu), "Unhandled opcode");
1143 switch (dc->opcode) {
1144 case CRISV10_IND_MOVE_M_SPR:
1145 insn_len = dec10_ind_move_m_pr(env, dc);
1147 case CRISV10_IND_MOVE_SPR_M:
1148 insn_len = dec10_ind_move_pr_m(dc);
1150 case CRISV10_IND_JUMP_M:
1151 if (dc->src == 15) {
1152 LOG_DIS("jump.%d %d r%d r%d direct\n", size,
1153 dc->opcode, dc->src, dc->dst);
1154 imm = cpu_ldl_code(env, dc->pc + 2);
1155 if (dc->mode == CRISV10_MODE_AUTOINC)
1158 c = tcg_const_tl(dc->pc + insn_len);
1159 t_gen_mov_preg_TN(dc, dc->dst, c);
1162 cris_prepare_jmp(dc, JMP_DIRECT);
1163 dc->delayed_branch--; /* v10 has no dslot here. */
1165 if (dc->dst == 14) {
1166 LOG_DIS("break %d\n", dc->src);
1167 cris_evaluate_flags(dc);
1168 tcg_gen_movi_tl(env_pc, dc->pc + 2);
1169 c = tcg_const_tl(dc->src + 2);
1170 t_gen_mov_env_TN(trap_vector, c);
1172 t_gen_raise_exception(EXCP_BREAK);
1173 dc->base.is_jmp = DISAS_NORETURN;
1176 LOG_DIS("%d: jump.%d %d r%d r%d\n", __LINE__, size,
1177 dc->opcode, dc->src, dc->dst);
1178 t[0] = tcg_temp_new();
1179 c = tcg_const_tl(dc->pc + insn_len);
1180 t_gen_mov_preg_TN(dc, dc->dst, c);
1182 crisv10_prepare_memaddr(dc, t[0], size);
1183 gen_load(dc, env_btarget, t[0], 4, 0);
1184 insn_len += crisv10_post_memaddr(dc, size);
1185 cris_prepare_jmp(dc, JMP_INDIRECT);
1186 dc->delayed_branch--; /* v10 has no dslot here. */
1187 tcg_temp_free(t[0]);
1191 case CRISV10_IND_MOVEM_R_M:
1192 LOG_DIS("movem_r_m pc=%x opcode=%d r%d r%d\n",
1193 dc->pc, dc->opcode, dc->dst, dc->src);
1194 dec10_movem_r_m(dc);
1196 case CRISV10_IND_MOVEM_M_R:
1197 LOG_DIS("movem_m_r pc=%x opcode=%d\n", dc->pc, dc->opcode);
1198 dec10_movem_m_r(dc);
1200 case CRISV10_IND_JUMP_R:
1201 LOG_DIS("jmp pc=%x opcode=%d r%d r%d\n",
1202 dc->pc, dc->opcode, dc->dst, dc->src);
1203 tcg_gen_mov_tl(env_btarget, cpu_R[dc->src]);
1204 c = tcg_const_tl(dc->pc + insn_len);
1205 t_gen_mov_preg_TN(dc, dc->dst, c);
1207 cris_prepare_jmp(dc, JMP_INDIRECT);
1208 dc->delayed_branch--; /* v10 has no dslot here. */
1210 case CRISV10_IND_MOVX:
1211 insn_len = dec10_alux_m(env, dc, CC_OP_MOVE);
1213 case CRISV10_IND_ADDX:
1214 insn_len = dec10_alux_m(env, dc, CC_OP_ADD);
1216 case CRISV10_IND_SUBX:
1217 insn_len = dec10_alux_m(env, dc, CC_OP_SUB);
1219 case CRISV10_IND_CMPX:
1220 insn_len = dec10_alux_m(env, dc, CC_OP_CMP);
1222 case CRISV10_IND_DIP:
1223 insn_len = dec10_dip(env, dc);
1225 case CRISV10_IND_BCC_M:
1227 cris_cc_mask(dc, 0);
1228 simm = cpu_ldsw_code(env, dc->pc + 2);
1231 LOG_DIS("bcc_m: b%s %x\n", cc_name(dc->cond), dc->pc + simm);
1232 cris_prepare_cc_branch(dc, simm, dc->cond);
1236 LOG_DIS("ERROR pc=%x opcode=%d\n", dc->pc, dc->opcode);
1237 cpu_abort(CPU(dc->cpu), "Unhandled opcode");
1244 static unsigned int crisv10_decoder(CPUCRISState *env, DisasContext *dc)
1246 unsigned int insn_len = 2;
1248 /* Load a halfword onto the instruction register. */
1249 dc->ir = cpu_lduw_code(env, dc->pc);
1251 /* Now decode it. */
1252 dc->opcode = EXTRACT_FIELD(dc->ir, 6, 9);
1253 dc->mode = EXTRACT_FIELD(dc->ir, 10, 11);
1254 dc->src = EXTRACT_FIELD(dc->ir, 0, 3);
1255 dc->size = EXTRACT_FIELD(dc->ir, 4, 5);
1256 dc->cond = dc->dst = EXTRACT_FIELD(dc->ir, 12, 15);
1257 dc->postinc = EXTRACT_FIELD(dc->ir, 10, 10);
1259 dc->clear_prefix = 1;
1261 /* FIXME: What if this insn insn't 2 in length?? */
1262 if (dc->src == 15 || dc->dst == 15)
1263 tcg_gen_movi_tl(cpu_R[15], dc->pc + 2);
1266 case CRISV10_MODE_QIMMEDIATE:
1267 insn_len = dec10_quick_imm(dc);
1269 case CRISV10_MODE_REG:
1270 insn_len = dec10_reg(dc);
1272 case CRISV10_MODE_AUTOINC:
1273 case CRISV10_MODE_INDIRECT:
1274 insn_len = dec10_ind(env, dc);
1278 if (dc->clear_prefix && dc->tb_flags & PFIX_FLAG) {
1279 dc->tb_flags &= ~PFIX_FLAG;
1280 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~PFIX_FLAG);
1281 if (dc->tb_flags != dc->base.tb->flags) {
1282 dc->cpustate_changed = 1;
1286 /* CRISv10 locks out interrupts on dslots. */
1287 if (dc->delayed_branch == 2) {
1293 void cris_initialize_crisv10_tcg(void)
1297 cc_x = tcg_global_mem_new(cpu_env,
1298 offsetof(CPUCRISState, cc_x), "cc_x");
1299 cc_src = tcg_global_mem_new(cpu_env,
1300 offsetof(CPUCRISState, cc_src), "cc_src");
1301 cc_dest = tcg_global_mem_new(cpu_env,
1302 offsetof(CPUCRISState, cc_dest),
1304 cc_result = tcg_global_mem_new(cpu_env,
1305 offsetof(CPUCRISState, cc_result),
1307 cc_op = tcg_global_mem_new(cpu_env,
1308 offsetof(CPUCRISState, cc_op), "cc_op");
1309 cc_size = tcg_global_mem_new(cpu_env,
1310 offsetof(CPUCRISState, cc_size),
1312 cc_mask = tcg_global_mem_new(cpu_env,
1313 offsetof(CPUCRISState, cc_mask),
1316 env_pc = tcg_global_mem_new(cpu_env,
1317 offsetof(CPUCRISState, pc),
1319 env_btarget = tcg_global_mem_new(cpu_env,
1320 offsetof(CPUCRISState, btarget),
1322 env_btaken = tcg_global_mem_new(cpu_env,
1323 offsetof(CPUCRISState, btaken),
1325 for (i = 0; i < 16; i++) {
1326 cpu_R[i] = tcg_global_mem_new(cpu_env,
1327 offsetof(CPUCRISState, regs[i]),
1330 for (i = 0; i < 16; i++) {
1331 cpu_PR[i] = tcg_global_mem_new(cpu_env,
1332 offsetof(CPUCRISState, pregs[i]),