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 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 "crisv10-decode.h"
23 static const char *regnames_v10[] =
25 "$r0", "$r1", "$r2", "$r3",
26 "$r4", "$r5", "$r6", "$r7",
27 "$r8", "$r9", "$r10", "$r11",
28 "$r12", "$r13", "$sp", "$pc",
31 static const char *pregnames_v10[] =
33 "$bz", "$vr", "$p2", "$p3",
34 "$wz", "$ccr", "$p6-prefix", "$mof",
35 "$dz", "$ibr", "$irp", "$srp",
36 "$bar", "$dccr", "$brp", "$usp",
39 /* We need this table to handle preg-moves with implicit width. */
40 static int preg_sizes_v10[] = {
51 static inline int dec10_size(unsigned int size)
59 static inline void cris_illegal_insn(DisasContext *dc)
61 qemu_log("illegal insn at pc=%x\n", dc->pc);
62 t_gen_raise_exception(EXCP_BREAK);
65 static void gen_store_v10_conditional(DisasContext *dc, TCGv addr, TCGv val,
66 unsigned int size, int mem_index)
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();
73 cris_evaluate_flags(dc);
75 tcg_gen_mov_tl(taddr, addr);
76 tcg_gen_mov_tl(tval, val);
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);
82 tcg_gen_qemu_st8(tval, taddr, mem_index);
83 } else if (size == 2) {
84 tcg_gen_qemu_st16(tval, taddr, mem_index);
86 tcg_gen_qemu_st32(tval, taddr, mem_index);
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*/
96 static void gen_store_v10(DisasContext *dc, TCGv addr, TCGv val,
99 int mem_index = cpu_mmu_index(dc->env);
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);
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);
115 tcg_gen_qemu_st8(val, addr, mem_index);
116 } else if (size == 2) {
117 tcg_gen_qemu_st16(val, addr, mem_index);
119 tcg_gen_qemu_st32(val, addr, mem_index);
124 /* Prefix flag and register are used to handle the more complex
126 static void cris_set_prefix(DisasContext *dc)
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);
132 /* prefix insns dont clear the x flag. */
137 static void crisv10_prepare_memaddr(DisasContext *dc,
138 TCGv addr, unsigned int size)
140 if (dc->tb_flags & PFIX_FLAG) {
141 tcg_gen_mov_tl(addr, cpu_PR[PR_PREFIX]);
143 tcg_gen_mov_tl(addr, cpu_R[dc->src]);
147 static unsigned int crisv10_post_memaddr(DisasContext *dc, unsigned int size)
149 unsigned int insn_len = 0;
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]);
156 if (dc->mode == CRISV10_MODE_AUTOINC) {
158 insn_len += size & ~1;
160 tcg_gen_addi_tl(cpu_R[dc->src], cpu_R[dc->src], size);
167 static int dec10_prep_move_m(DisasContext *dc, int s_ext, int memsize,
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);
180 /* Load [$rs] onto T1. */
185 imm = ldsb_code(dc->pc + 2);
187 imm = ldsw_code(dc->pc + 2);
190 imm = ldub_code(dc->pc + 2);
192 imm = lduw_code(dc->pc + 2);
195 imm = ldl_code(dc->pc + 2);
197 tcg_gen_movi_tl(dst, imm);
199 if (dc->mode == CRISV10_MODE_AUTOINC) {
203 tcg_gen_addi_tl(cpu_R[15], cpu_R[15], insn_len);
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);
213 t_gen_sext(dst, dst, memsize);
215 t_gen_zext(dst, dst, memsize);
216 insn_len += crisv10_post_memaddr(dc, memsize);
220 if (dc->mode == CRISV10_MODE_INDIRECT && (dc->tb_flags & PFIX_FLAG)) {
226 static unsigned int dec10_quick_imm(DisasContext *dc)
232 imm = dc->ir & ((1 << 6) - 1);
233 simm = (int8_t) (imm << 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);
246 tcg_gen_movi_tl(cpu_PR[PR_PREFIX], dc->pc + 2 + simm);
248 tcg_gen_addi_tl(cpu_PR[PR_PREFIX], cpu_R[dc->dst], simm);
252 case CRISV10_QIMM_MOVEQ:
253 LOG_DIS("moveq %d, $r%d\n", simm, dc->dst);
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);
259 case CRISV10_QIMM_CMPQ:
260 LOG_DIS("cmpq %d, $r%d\n", simm, dc->dst);
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);
266 case CRISV10_QIMM_ADDQ:
267 LOG_DIS("addq %d, $r%d\n", imm, dc->dst);
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);
273 case CRISV10_QIMM_ANDQ:
274 LOG_DIS("andq %d, $r%d\n", simm, dc->dst);
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);
280 case CRISV10_QIMM_ASHQ:
281 LOG_DIS("ashq %d, $r%d\n", simm, dc->dst);
283 cris_cc_mask(dc, CC_MASK_NZVC);
287 cris_alu(dc, CC_OP_ASR, cpu_R[dc->dst],
288 cpu_R[dc->dst], tcg_const_tl(imm), 4);
291 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
292 gen_helper_btst(cpu_PR[PR_CCS], cpu_R[dc->dst],
293 tcg_const_tl(imm), cpu_PR[PR_CCS]);
296 case CRISV10_QIMM_LSHQ:
297 LOG_DIS("lshq %d, $r%d\n", simm, dc->dst);
300 if (imm & (1 << 5)) {
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);
308 case CRISV10_QIMM_SUBQ:
309 LOG_DIS("subq %d, $r%d\n", imm, dc->dst);
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);
315 case CRISV10_QIMM_ORQ:
316 LOG_DIS("andq %d, $r%d\n", simm, dc->dst);
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);
323 case CRISV10_QIMM_BCC_R0:
324 case CRISV10_QIMM_BCC_R1:
325 case CRISV10_QIMM_BCC_R2:
326 case CRISV10_QIMM_BCC_R3:
328 /* bit 0 is a sign bit. */
330 imm |= 0xffffff00; /* sign extend. */
331 imm &= ~1; /* get rid of the sign bit. */
334 LOG_DIS("b%s %d\n", cc_name(dc->cond), imm);
337 cris_prepare_cc_branch(dc, imm, dc->cond);
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(dc->env, "Unhandled quickimm\n");
349 static unsigned int dec10_setclrf(DisasContext *dc)
352 unsigned int set = ~dc->opcode & 1;
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);
359 if (flags & X_FLAG) {
362 dc->flags_x = X_FLAG;
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);
373 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags);
375 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS],
376 ~(flags|F_FLAG_V10|P_FLAG_V10));
379 dc->flags_uptodate = 1;
385 static inline void dec10_reg_prep_sext(DisasContext *dc, int size, int sext,
386 TCGv dd, TCGv ds, TCGv sd, TCGv ss)
389 t_gen_sext(dd, sd, size);
390 t_gen_sext(ds, ss, size);
392 t_gen_zext(dd, sd, size);
393 t_gen_zext(ds, ss, size);
397 static void dec10_reg_alu(DisasContext *dc, int op, int size, int sext)
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]);
406 if (op == CC_OP_LSL || op == CC_OP_LSR || op == CC_OP_ASR) {
407 tcg_gen_andi_tl(t[1], t[1], 63);
410 assert(dc->dst != 15);
411 cris_alu(dc, op, cpu_R[dc->dst], t[0], t[1], size);
416 static void dec10_reg_bound(DisasContext *dc, int size)
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);
426 static void dec10_reg_mul(DisasContext *dc, int size, int sext)
428 int op = sext ? CC_OP_MULS : CC_OP_MULU;
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]);
436 cris_alu(dc, op, cpu_R[dc->dst], t[0], t[1], 4);
443 static void dec10_reg_movs(DisasContext *dc)
445 int size = (dc->size & 1) + 1;
448 LOG_DIS("movx.%d $r%d, $r%d\n", size, dc->src, dc->dst);
449 cris_cc_mask(dc, CC_MASK_NZVC);
453 t_gen_sext(t, cpu_R[dc->src], size);
455 t_gen_zext(t, cpu_R[dc->src], size);
457 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
461 static void dec10_reg_alux(DisasContext *dc, int op)
463 int size = (dc->size & 1) + 1;
466 LOG_DIS("movx.%d $r%d, $r%d\n", size, dc->src, dc->dst);
467 cris_cc_mask(dc, CC_MASK_NZVC);
471 t_gen_sext(t, cpu_R[dc->src], size);
473 t_gen_zext(t, cpu_R[dc->src], size);
475 cris_alu(dc, op, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
479 static void dec10_reg_mov_pr(DisasContext *dc)
481 LOG_DIS("move p%d r%d sz=%d\n", dc->dst, dc->src, preg_sizes_v10[dc->dst]);
484 tcg_gen_mov_tl(env_btarget, cpu_PR[dc->dst]);
485 cris_prepare_jmp(dc, JMP_INDIRECT);
488 if (dc->dst == PR_CCS) {
489 cris_evaluate_flags(dc);
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]);
495 static void dec10_reg_abs(DisasContext *dc)
499 LOG_DIS("abs $r%u, $r%u\n", dc->src, dc->dst);
501 assert(dc->dst != 15);
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);
507 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t0, 4);
511 static void dec10_reg_swap(DisasContext *dc)
515 LOG_DIS("not $r%d, $r%d\n", dc->src, dc->dst);
517 cris_cc_mask(dc, CC_MASK_NZVC);
519 t_gen_mov_TN_reg(t0, dc->src);
521 tcg_gen_not_tl(t0, t0);
528 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->src], cpu_R[dc->src], t0, 4);
532 static void dec10_reg_scc(DisasContext *dc)
536 LOG_DIS("s%s $r%u\n", cc_name(cond), dc->src);
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);
548 tcg_gen_movi_tl(cpu_R[dc->src], 1);
554 static unsigned int dec10_reg(DisasContext *dc)
557 unsigned int insn_len = 2;
558 unsigned int size = dec10_size(dc->size);
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);
568 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
569 cris_prepare_jmp(dc, JMP_INDIRECT);
570 dc->delayed_branch = 1;
573 case CRISV10_REG_MOVX:
574 cris_cc_mask(dc, CC_MASK_NZVC);
577 case CRISV10_REG_ADDX:
578 cris_cc_mask(dc, CC_MASK_NZVC);
579 dec10_reg_alux(dc, CC_OP_ADD);
581 case CRISV10_REG_SUBX:
582 cris_cc_mask(dc, CC_MASK_NZVC);
583 dec10_reg_alux(dc, CC_OP_SUB);
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);
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);
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);
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);
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);
610 case CRISV10_REG_ADDI:
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);
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);
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);
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);
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);
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);
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);
650 case 4: tmp = 2; break;
651 case 2: tmp = 1; break;
652 case 1: tmp = 0; break;
654 cpu_abort(dc->env, "Unhandled BIAP");
659 tcg_gen_shli_tl(t, cpu_R[dc->dst], tmp);
661 tcg_gen_addi_tl(cpu_PR[PR_PREFIX], t, ((dc->pc +2)| 1) + 1);
663 tcg_gen_add_tl(cpu_PR[PR_PREFIX], cpu_R[dc->src], t);
670 LOG_DIS("pc=%x reg %d r%d r%d\n", dc->pc,
671 dc->opcode, dc->src, dc->dst);
672 cpu_abort(dc->env, "Unhandled opcode");
676 switch (dc->opcode) {
677 case CRISV10_REG_MOVX:
678 cris_cc_mask(dc, CC_MASK_NZVC);
681 case CRISV10_REG_ADDX:
682 cris_cc_mask(dc, CC_MASK_NZVC);
683 dec10_reg_alux(dc, CC_OP_ADD);
685 case CRISV10_REG_SUBX:
686 cris_cc_mask(dc, CC_MASK_NZVC);
687 dec10_reg_alux(dc, CC_OP_SUB);
689 case CRISV10_REG_MOVE_SPR_R:
690 cris_evaluate_flags(dc);
692 dec10_reg_mov_pr(dc);
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]);
701 case CRISV10_REG_SETF:
702 case CRISV10_REG_CLEARF:
705 case CRISV10_REG_SWAP:
708 case CRISV10_REG_ABS:
709 cris_cc_mask(dc, CC_MASK_NZVC);
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);
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);
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_R[dc->dst],
727 cpu_R[dc->src], cpu_PR[PR_CCS]);
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);
735 case CRISV10_REG_MSTEP:
736 LOG_DIS("mstep $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
737 cris_evaluate_flags(dc);
738 cris_cc_mask(dc, CC_MASK_NZVC);
739 cris_alu(dc, CC_OP_MSTEP, cpu_R[dc->dst],
740 cpu_R[dc->dst], cpu_R[dc->src], 4);
742 case CRISV10_REG_SCC:
746 LOG_DIS("pc=%x reg %d r%d r%d\n", dc->pc,
747 dc->opcode, dc->src, dc->dst);
748 cpu_abort(dc->env, "Unhandled opcode");
755 static unsigned int dec10_ind_move_m_r(DisasContext *dc, unsigned int size)
757 unsigned int insn_len = 2;
760 LOG_DIS("%s: move.%d [$r%d], $r%d\n", __func__,
761 size, dc->src, dc->dst);
763 cris_cc_mask(dc, CC_MASK_NZVC);
765 insn_len += dec10_prep_move_m(dc, 0, size, t);
766 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t, size);
768 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
769 cris_prepare_jmp(dc, JMP_INDIRECT);
770 dc->delayed_branch = 1;
778 static unsigned int dec10_ind_move_r_m(DisasContext *dc, unsigned int size)
780 unsigned int insn_len = 2;
783 LOG_DIS("move.%d $r%d, [$r%d]\n", dc->size, dc->src, dc->dst);
784 addr = tcg_temp_new();
785 crisv10_prepare_memaddr(dc, addr, size);
786 gen_store_v10(dc, addr, cpu_R[dc->dst], size);
787 insn_len += crisv10_post_memaddr(dc, size);
792 static unsigned int dec10_ind_move_m_pr(DisasContext *dc)
794 unsigned int insn_len = 2, rd = dc->dst;
797 LOG_DIS("move.%d $p%d, [$r%d]\n", dc->size, dc->dst, dc->src);
800 addr = tcg_temp_new();
802 insn_len += dec10_prep_move_m(dc, 0, 4, t);
804 tcg_gen_mov_tl(env_btarget, t);
805 cris_prepare_jmp(dc, JMP_INDIRECT);
806 dc->delayed_branch = 1;
810 tcg_gen_mov_tl(cpu_PR[rd], t);
811 dc->cpustate_changed = 1;
817 static unsigned int dec10_ind_move_pr_m(DisasContext *dc)
819 unsigned int insn_len = 2, size = preg_sizes_v10[dc->dst];
822 LOG_DIS("move.%d $p%d, [$r%d]\n", dc->size, dc->dst, dc->src);
824 addr = tcg_temp_new();
825 crisv10_prepare_memaddr(dc, addr, size);
826 if (dc->dst == PR_CCS) {
828 cris_evaluate_flags(dc);
829 tcg_gen_andi_tl(t0, cpu_PR[PR_CCS], ~PFIX_FLAG);
830 gen_store_v10(dc, addr, t0, size);
833 gen_store_v10(dc, addr, cpu_PR[dc->dst], size);
836 insn_len += crisv10_post_memaddr(dc, size);
842 static void dec10_movem_r_m(DisasContext *dc)
844 int i, pfix = dc->tb_flags & PFIX_FLAG;
847 LOG_DIS("%s r%d, [r%d] pi=%d ir=%x\n", __func__,
848 dc->dst, dc->src, dc->postinc, dc->ir);
850 addr = tcg_temp_new();
852 crisv10_prepare_memaddr(dc, addr, 4);
853 tcg_gen_mov_tl(t0, addr);
854 for (i = dc->dst; i >= 0; i--) {
855 if ((pfix && dc->mode == CRISV10_MODE_AUTOINC) && dc->src == i) {
856 gen_store_v10(dc, addr, t0, 4);
858 gen_store_v10(dc, addr, cpu_R[i], 4);
860 tcg_gen_addi_tl(addr, addr, 4);
863 if (pfix && dc->mode == CRISV10_MODE_AUTOINC) {
864 tcg_gen_mov_tl(cpu_R[dc->src], t0);
867 if (!pfix && dc->mode == CRISV10_MODE_AUTOINC) {
868 tcg_gen_mov_tl(cpu_R[dc->src], addr);
874 static void dec10_movem_m_r(DisasContext *dc)
876 int i, pfix = dc->tb_flags & PFIX_FLAG;
879 LOG_DIS("%s [r%d], r%d pi=%d ir=%x\n", __func__,
880 dc->src, dc->dst, dc->postinc, dc->ir);
882 addr = tcg_temp_new();
884 crisv10_prepare_memaddr(dc, addr, 4);
885 tcg_gen_mov_tl(t0, addr);
886 for (i = dc->dst; i >= 0; i--) {
887 gen_load(dc, cpu_R[i], addr, 4, 0);
888 tcg_gen_addi_tl(addr, addr, 4);
891 if (pfix && dc->mode == CRISV10_MODE_AUTOINC) {
892 tcg_gen_mov_tl(cpu_R[dc->src], t0);
895 if (!pfix && dc->mode == CRISV10_MODE_AUTOINC) {
896 tcg_gen_mov_tl(cpu_R[dc->src], addr);
902 static int dec10_ind_alu(DisasContext *dc, int op, unsigned int size)
908 cris_alu_m_alloc_temps(t);
909 insn_len += dec10_prep_move_m(dc, 0, size, t[0]);
910 cris_alu(dc, op, cpu_R[dc->dst], cpu_R[rd], t[0], size);
912 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
913 cris_prepare_jmp(dc, JMP_INDIRECT);
914 dc->delayed_branch = 1;
918 cris_alu_m_free_temps(t);
923 static int dec10_ind_bound(DisasContext *dc, unsigned int size)
929 t = tcg_temp_local_new();
930 insn_len += dec10_prep_move_m(dc, 0, size, t);
931 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->dst], cpu_R[rd], t, 4);
933 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
934 cris_prepare_jmp(dc, JMP_INDIRECT);
935 dc->delayed_branch = 1;
943 static int dec10_alux_m(DisasContext *dc, int op)
945 unsigned int size = (dc->size & 1) ? 2 : 1;
946 unsigned int sx = !!(dc->size & 2);
951 LOG_DIS("addx size=%d sx=%d op=%d %d\n", size, sx, dc->src, dc->dst);
955 cris_cc_mask(dc, CC_MASK_NZVC);
956 insn_len += dec10_prep_move_m(dc, sx, size, t);
957 cris_alu(dc, op, cpu_R[dc->dst], cpu_R[rd], t, 4);
959 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
960 cris_prepare_jmp(dc, JMP_INDIRECT);
961 dc->delayed_branch = 1;
969 static int dec10_dip(DisasContext *dc)
974 LOG_DIS("dip pc=%x opcode=%d r%d r%d\n",
975 dc->pc, dc->opcode, dc->src, dc->dst);
977 imm = ldl_code(dc->pc + 2);
978 tcg_gen_movi_tl(cpu_PR[PR_PREFIX], imm);
981 tcg_gen_addi_tl(cpu_R[15], cpu_R[15], insn_len - 2);
983 gen_load(dc, cpu_PR[PR_PREFIX], cpu_R[dc->src], 4, 0);
985 tcg_gen_addi_tl(cpu_R[dc->src], cpu_R[dc->src], 4);
992 static int dec10_bdap_m(DisasContext *dc, int size)
997 LOG_DIS("bdap_m pc=%x opcode=%d r%d r%d sz=%d\n",
998 dc->pc, dc->opcode, dc->src, dc->dst, size);
1000 assert(dc->dst != 15);
1002 /* 8bit embedded offset? */
1003 if (!dc->postinc && (dc->ir & (1 << 11))) {
1004 int simm = dc->ir & 0xff;
1006 /* cpu_abort(dc->env, "Unhandled opcode"); */
1007 /* sign extended. */
1008 simm = (int8_t)simm;
1010 tcg_gen_addi_tl(cpu_PR[PR_PREFIX], cpu_R[dc->dst], simm);
1012 cris_set_prefix(dc);
1016 /* Now the rest of the modes are truly indirect. */
1017 insn_len += dec10_prep_move_m(dc, 1, size, cpu_PR[PR_PREFIX]);
1018 tcg_gen_add_tl(cpu_PR[PR_PREFIX], cpu_PR[PR_PREFIX], cpu_R[rd]);
1019 cris_set_prefix(dc);
1023 static unsigned int dec10_ind(DisasContext *dc)
1025 unsigned int insn_len = 2;
1026 unsigned int size = dec10_size(dc->size);
1031 if (dc->size != 3) {
1032 switch (dc->opcode) {
1033 case CRISV10_IND_MOVE_M_R:
1034 return dec10_ind_move_m_r(dc, size);
1036 case CRISV10_IND_MOVE_R_M:
1037 return dec10_ind_move_r_m(dc, size);
1039 case CRISV10_IND_CMP:
1040 LOG_DIS("cmp size=%d op=%d %d\n", size, dc->src, dc->dst);
1041 cris_cc_mask(dc, CC_MASK_NZVC);
1042 insn_len += dec10_ind_alu(dc, CC_OP_CMP, size);
1044 case CRISV10_IND_TEST:
1045 LOG_DIS("test size=%d op=%d %d\n", size, dc->src, dc->dst);
1047 cris_evaluate_flags(dc);
1048 cris_cc_mask(dc, CC_MASK_NZVC);
1049 cris_alu_m_alloc_temps(t);
1050 insn_len += dec10_prep_move_m(dc, 0, size, t[0]);
1051 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3);
1052 cris_alu(dc, CC_OP_CMP, cpu_R[dc->dst],
1053 t[0], tcg_const_tl(0), size);
1054 cris_alu_m_free_temps(t);
1056 case CRISV10_IND_ADD:
1057 LOG_DIS("add size=%d op=%d %d\n", size, dc->src, dc->dst);
1058 cris_cc_mask(dc, CC_MASK_NZVC);
1059 insn_len += dec10_ind_alu(dc, CC_OP_ADD, size);
1061 case CRISV10_IND_SUB:
1062 LOG_DIS("sub size=%d op=%d %d\n", size, dc->src, dc->dst);
1063 cris_cc_mask(dc, CC_MASK_NZVC);
1064 insn_len += dec10_ind_alu(dc, CC_OP_SUB, size);
1066 case CRISV10_IND_BOUND:
1067 LOG_DIS("bound size=%d op=%d %d\n", size, dc->src, dc->dst);
1068 cris_cc_mask(dc, CC_MASK_NZVC);
1069 insn_len += dec10_ind_bound(dc, size);
1071 case CRISV10_IND_AND:
1072 LOG_DIS("and size=%d op=%d %d\n", size, dc->src, dc->dst);
1073 cris_cc_mask(dc, CC_MASK_NZVC);
1074 insn_len += dec10_ind_alu(dc, CC_OP_AND, size);
1076 case CRISV10_IND_OR:
1077 LOG_DIS("or size=%d op=%d %d\n", size, dc->src, dc->dst);
1078 cris_cc_mask(dc, CC_MASK_NZVC);
1079 insn_len += dec10_ind_alu(dc, CC_OP_OR, size);
1081 case CRISV10_IND_MOVX:
1082 insn_len = dec10_alux_m(dc, CC_OP_MOVE);
1084 case CRISV10_IND_ADDX:
1085 insn_len = dec10_alux_m(dc, CC_OP_ADD);
1087 case CRISV10_IND_SUBX:
1088 insn_len = dec10_alux_m(dc, CC_OP_SUB);
1090 case CRISV10_IND_CMPX:
1091 insn_len = dec10_alux_m(dc, CC_OP_CMP);
1093 case CRISV10_IND_MUL:
1094 /* This is a reg insn coded in the mem indir space. */
1095 LOG_DIS("mul pc=%x opcode=%d\n", dc->pc, dc->opcode);
1096 cris_cc_mask(dc, CC_MASK_NZVC);
1097 dec10_reg_mul(dc, size, dc->ir & (1 << 10));
1099 case CRISV10_IND_BDAP_M:
1100 insn_len = dec10_bdap_m(dc, size);
1103 LOG_DIS("pc=%x var-ind.%d %d r%d r%d\n",
1104 dc->pc, size, dc->opcode, dc->src, dc->dst);
1105 cpu_abort(dc->env, "Unhandled opcode");
1111 switch (dc->opcode) {
1112 case CRISV10_IND_MOVE_M_SPR:
1113 insn_len = dec10_ind_move_m_pr(dc);
1115 case CRISV10_IND_MOVE_SPR_M:
1116 insn_len = dec10_ind_move_pr_m(dc);
1118 case CRISV10_IND_JUMP_M:
1119 if (dc->src == 15) {
1120 LOG_DIS("jump.%d %d r%d r%d direct\n", size,
1121 dc->opcode, dc->src, dc->dst);
1122 imm = ldl_code(dc->pc + 2);
1123 if (dc->mode == CRISV10_MODE_AUTOINC)
1126 t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len));
1128 cris_prepare_jmp(dc, JMP_DIRECT);
1129 dc->delayed_branch--; /* v10 has no dslot here. */
1131 if (dc->dst == 14) {
1132 LOG_DIS("break %d\n", dc->src);
1133 cris_evaluate_flags(dc);
1134 tcg_gen_movi_tl(env_pc, dc->pc + 2);
1135 t_gen_raise_exception(EXCP_BREAK);
1136 dc->is_jmp = DISAS_UPDATE;
1139 LOG_DIS("%d: jump.%d %d r%d r%d\n", __LINE__, size,
1140 dc->opcode, dc->src, dc->dst);
1141 t[0] = tcg_temp_new();
1142 t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len));
1143 crisv10_prepare_memaddr(dc, t[0], size);
1144 gen_load(dc, env_btarget, t[0], 4, 0);
1145 insn_len += crisv10_post_memaddr(dc, size);
1146 cris_prepare_jmp(dc, JMP_INDIRECT);
1147 dc->delayed_branch--; /* v10 has no dslot here. */
1148 tcg_temp_free(t[0]);
1152 case CRISV10_IND_MOVEM_R_M:
1153 LOG_DIS("movem_r_m pc=%x opcode=%d r%d r%d\n",
1154 dc->pc, dc->opcode, dc->dst, dc->src);
1155 dec10_movem_r_m(dc);
1157 case CRISV10_IND_MOVEM_M_R:
1158 LOG_DIS("movem_m_r pc=%x opcode=%d\n", dc->pc, dc->opcode);
1159 dec10_movem_m_r(dc);
1161 case CRISV10_IND_JUMP_R:
1162 LOG_DIS("jmp pc=%x opcode=%d r%d r%d\n",
1163 dc->pc, dc->opcode, dc->dst, dc->src);
1164 tcg_gen_mov_tl(env_btarget, cpu_R[dc->src]);
1165 t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len));
1166 cris_prepare_jmp(dc, JMP_INDIRECT);
1167 dc->delayed_branch--; /* v10 has no dslot here. */
1169 case CRISV10_IND_MOVX:
1170 insn_len = dec10_alux_m(dc, CC_OP_MOVE);
1172 case CRISV10_IND_ADDX:
1173 insn_len = dec10_alux_m(dc, CC_OP_ADD);
1175 case CRISV10_IND_SUBX:
1176 insn_len = dec10_alux_m(dc, CC_OP_SUB);
1178 case CRISV10_IND_CMPX:
1179 insn_len = dec10_alux_m(dc, CC_OP_CMP);
1181 case CRISV10_IND_DIP:
1182 insn_len = dec10_dip(dc);
1184 case CRISV10_IND_BCC_M:
1186 cris_cc_mask(dc, 0);
1187 imm = ldsw_code(dc->pc + 2);
1188 simm = (int16_t)imm;
1191 LOG_DIS("bcc_m: b%s %x\n", cc_name(dc->cond), dc->pc + simm);
1192 cris_prepare_cc_branch(dc, simm, dc->cond);
1196 LOG_DIS("ERROR pc=%x opcode=%d\n", dc->pc, dc->opcode);
1197 cpu_abort(dc->env, "Unhandled opcode");
1204 static unsigned int crisv10_decoder(DisasContext *dc)
1206 unsigned int insn_len = 2;
1208 if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP)))
1209 tcg_gen_debug_insn_start(dc->pc);
1211 /* Load a halfword onto the instruction register. */
1212 dc->ir = lduw_code(dc->pc);
1214 /* Now decode it. */
1215 dc->opcode = EXTRACT_FIELD(dc->ir, 6, 9);
1216 dc->mode = EXTRACT_FIELD(dc->ir, 10, 11);
1217 dc->src = EXTRACT_FIELD(dc->ir, 0, 3);
1218 dc->size = EXTRACT_FIELD(dc->ir, 4, 5);
1219 dc->cond = dc->dst = EXTRACT_FIELD(dc->ir, 12, 15);
1220 dc->postinc = EXTRACT_FIELD(dc->ir, 10, 10);
1222 dc->clear_prefix = 1;
1224 /* FIXME: What if this insn insn't 2 in length?? */
1225 if (dc->src == 15 || dc->dst == 15)
1226 tcg_gen_movi_tl(cpu_R[15], dc->pc + 2);
1229 case CRISV10_MODE_QIMMEDIATE:
1230 insn_len = dec10_quick_imm(dc);
1232 case CRISV10_MODE_REG:
1233 insn_len = dec10_reg(dc);
1235 case CRISV10_MODE_AUTOINC:
1236 case CRISV10_MODE_INDIRECT:
1237 insn_len = dec10_ind(dc);
1241 if (dc->clear_prefix && dc->tb_flags & PFIX_FLAG) {
1242 dc->tb_flags &= ~PFIX_FLAG;
1243 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~PFIX_FLAG);
1244 if (dc->tb_flags != dc->tb->flags) {
1245 dc->cpustate_changed = 1;
1249 /* CRISv10 locks out interrupts on dslots. */
1250 if (dc->delayed_branch == 2) {
1256 static CPUCRISState *cpu_crisv10_init (CPUCRISState *env)
1260 cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
1261 cc_x = tcg_global_mem_new(TCG_AREG0,
1262 offsetof(CPUCRISState, cc_x), "cc_x");
1263 cc_src = tcg_global_mem_new(TCG_AREG0,
1264 offsetof(CPUCRISState, cc_src), "cc_src");
1265 cc_dest = tcg_global_mem_new(TCG_AREG0,
1266 offsetof(CPUCRISState, cc_dest),
1268 cc_result = tcg_global_mem_new(TCG_AREG0,
1269 offsetof(CPUCRISState, cc_result),
1271 cc_op = tcg_global_mem_new(TCG_AREG0,
1272 offsetof(CPUCRISState, cc_op), "cc_op");
1273 cc_size = tcg_global_mem_new(TCG_AREG0,
1274 offsetof(CPUCRISState, cc_size),
1276 cc_mask = tcg_global_mem_new(TCG_AREG0,
1277 offsetof(CPUCRISState, cc_mask),
1280 env_pc = tcg_global_mem_new(TCG_AREG0,
1281 offsetof(CPUCRISState, pc),
1283 env_btarget = tcg_global_mem_new(TCG_AREG0,
1284 offsetof(CPUCRISState, btarget),
1286 env_btaken = tcg_global_mem_new(TCG_AREG0,
1287 offsetof(CPUCRISState, btaken),
1289 for (i = 0; i < 16; i++) {
1290 cpu_R[i] = tcg_global_mem_new(TCG_AREG0,
1291 offsetof(CPUCRISState, regs[i]),
1294 for (i = 0; i < 16; i++) {
1295 cpu_PR[i] = tcg_global_mem_new(TCG_AREG0,
1296 offsetof(CPUCRISState, pregs[i]),