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 * const 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 * const 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 const 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_new();
72 TCGv tval = tcg_temp_new();
73 TCGv t1 = tcg_temp_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_st_tl(tval, taddr, mem_index, ctz32(size) | MO_TE);
87 tcg_gen_shri_tl(t1, t1, 1); /* shift F to P position */
88 tcg_gen_or_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], t1); /*P=F*/
91 static void gen_store_v10(DisasContext *dc, TCGv addr, TCGv val,
94 int mem_index = cpu_mmu_index(&dc->cpu->env, false);
96 /* If we get a fault on a delayslot we must keep the jmp state in
97 the cpu-state to be able to re-execute the jmp. */
98 if (dc->delayed_branch == 1) {
99 cris_store_direct_jmp(dc);
102 /* Conditional writes. */
104 gen_store_v10_conditional(dc, addr, val, size, mem_index);
108 tcg_gen_qemu_st_tl(val, addr, mem_index, ctz32(size) | MO_TE);
112 /* Prefix flag and register are used to handle the more complex
114 static void cris_set_prefix(DisasContext *dc)
116 dc->clear_prefix = 0;
117 dc->tb_flags |= PFIX_FLAG;
118 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], PFIX_FLAG);
120 /* prefix insns don't clear the x flag. */
125 static void crisv10_prepare_memaddr(DisasContext *dc,
126 TCGv addr, unsigned int size)
128 if (dc->tb_flags & PFIX_FLAG) {
129 tcg_gen_mov_tl(addr, cpu_PR[PR_PREFIX]);
131 tcg_gen_mov_tl(addr, cpu_R[dc->src]);
135 static unsigned int crisv10_post_memaddr(DisasContext *dc, unsigned int size)
137 unsigned int insn_len = 0;
139 if (dc->tb_flags & PFIX_FLAG) {
140 if (dc->mode == CRISV10_MODE_AUTOINC) {
141 tcg_gen_mov_tl(cpu_R[dc->src], cpu_PR[PR_PREFIX]);
144 if (dc->mode == CRISV10_MODE_AUTOINC) {
146 insn_len += size & ~1;
148 tcg_gen_addi_tl(cpu_R[dc->src], cpu_R[dc->src], size);
155 static int dec10_prep_move_m(CPUCRISState *env, DisasContext *dc,
156 int s_ext, int memsize, TCGv dst)
164 is_imm = rs == 15 && !(dc->tb_flags & PFIX_FLAG);
165 LOG_DIS("rs=%d rd=%d is_imm=%d mode=%d pfix=%d\n",
166 rs, dc->dst, is_imm, dc->mode, dc->tb_flags & PFIX_FLAG);
168 /* Load [$rs] onto T1. */
173 imm = cpu_ldsb_code(env, dc->pc + 2);
175 imm = cpu_ldsw_code(env, dc->pc + 2);
178 imm = cpu_ldub_code(env, dc->pc + 2);
180 imm = cpu_lduw_code(env, dc->pc + 2);
183 imm = cpu_ldl_code(env, dc->pc + 2);
185 tcg_gen_movi_tl(dst, imm);
187 if (dc->mode == CRISV10_MODE_AUTOINC) {
191 tcg_gen_addi_tl(cpu_R[15], cpu_R[15], insn_len);
196 addr = tcg_temp_new();
197 cris_flush_cc_state(dc);
198 crisv10_prepare_memaddr(dc, addr, memsize);
199 gen_load(dc, dst, addr, memsize, 0);
201 t_gen_sext(dst, dst, memsize);
203 t_gen_zext(dst, dst, memsize);
204 insn_len += crisv10_post_memaddr(dc, memsize);
207 if (dc->mode == CRISV10_MODE_INDIRECT && (dc->tb_flags & PFIX_FLAG)) {
213 static unsigned int dec10_quick_imm(DisasContext *dc)
220 imm = dc->ir & ((1 << 6) - 1);
221 simm = (int8_t) (imm << 2);
223 switch (dc->opcode) {
224 case CRISV10_QIMM_BDAP_R0:
225 case CRISV10_QIMM_BDAP_R1:
226 case CRISV10_QIMM_BDAP_R2:
227 case CRISV10_QIMM_BDAP_R3:
228 simm = (int8_t)dc->ir;
229 LOG_DIS("bdap %d $r%d\n", simm, dc->dst);
230 LOG_DIS("pc=%x mode=%x quickimm %d r%d r%d\n",
231 dc->pc, dc->mode, dc->opcode, dc->src, dc->dst);
234 tcg_gen_movi_tl(cpu_PR[PR_PREFIX], dc->pc + 2 + simm);
236 tcg_gen_addi_tl(cpu_PR[PR_PREFIX], cpu_R[dc->dst], simm);
240 case CRISV10_QIMM_MOVEQ:
241 LOG_DIS("moveq %d, $r%d\n", simm, dc->dst);
243 cris_cc_mask(dc, CC_MASK_NZVC);
244 c = tcg_constant_tl(simm);
245 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst],
246 cpu_R[dc->dst], c, 4);
248 case CRISV10_QIMM_CMPQ:
249 LOG_DIS("cmpq %d, $r%d\n", simm, dc->dst);
251 cris_cc_mask(dc, CC_MASK_NZVC);
252 c = tcg_constant_tl(simm);
253 cris_alu(dc, CC_OP_CMP, cpu_R[dc->dst],
254 cpu_R[dc->dst], c, 4);
256 case CRISV10_QIMM_ADDQ:
257 LOG_DIS("addq %d, $r%d\n", imm, dc->dst);
259 cris_cc_mask(dc, CC_MASK_NZVC);
260 c = tcg_constant_tl(imm);
261 cris_alu(dc, CC_OP_ADD, cpu_R[dc->dst],
262 cpu_R[dc->dst], c, 4);
264 case CRISV10_QIMM_ANDQ:
265 LOG_DIS("andq %d, $r%d\n", simm, dc->dst);
267 cris_cc_mask(dc, CC_MASK_NZVC);
268 c = tcg_constant_tl(simm);
269 cris_alu(dc, CC_OP_AND, cpu_R[dc->dst],
270 cpu_R[dc->dst], c, 4);
272 case CRISV10_QIMM_ASHQ:
273 LOG_DIS("ashq %d, $r%d\n", simm, dc->dst);
275 cris_cc_mask(dc, CC_MASK_NZVC);
278 c = tcg_constant_tl(imm);
280 cris_alu(dc, CC_OP_ASR, cpu_R[dc->dst],
281 cpu_R[dc->dst], c, 4);
284 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
285 gen_helper_btst(cpu_PR[PR_CCS], tcg_env, cpu_R[dc->dst],
289 case CRISV10_QIMM_LSHQ:
290 LOG_DIS("lshq %d, $r%d\n", simm, dc->dst);
293 if (imm & (1 << 5)) {
297 cris_cc_mask(dc, CC_MASK_NZVC);
298 c = tcg_constant_tl(imm);
299 cris_alu(dc, op, cpu_R[dc->dst],
300 cpu_R[dc->dst], c, 4);
302 case CRISV10_QIMM_SUBQ:
303 LOG_DIS("subq %d, $r%d\n", imm, dc->dst);
305 cris_cc_mask(dc, CC_MASK_NZVC);
306 c = tcg_constant_tl(imm);
307 cris_alu(dc, CC_OP_SUB, cpu_R[dc->dst],
308 cpu_R[dc->dst], c, 4);
310 case CRISV10_QIMM_ORQ:
311 LOG_DIS("andq %d, $r%d\n", simm, dc->dst);
313 cris_cc_mask(dc, CC_MASK_NZVC);
314 c = tcg_constant_tl(simm);
315 cris_alu(dc, CC_OP_OR, cpu_R[dc->dst],
316 cpu_R[dc->dst], c, 4);
319 case CRISV10_QIMM_BCC_R0:
320 case CRISV10_QIMM_BCC_R1:
321 case CRISV10_QIMM_BCC_R2:
322 case CRISV10_QIMM_BCC_R3:
324 /* bit 0 is a sign bit. */
326 imm |= 0xffffff00; /* sign extend. */
327 imm &= ~1; /* get rid of the sign bit. */
330 LOG_DIS("b%s %d\n", cc_name(dc->cond), imm);
333 cris_prepare_cc_branch(dc, imm, dc->cond);
337 LOG_DIS("pc=%x mode=%x quickimm %d r%d r%d\n",
338 dc->pc, dc->mode, dc->opcode, dc->src, dc->dst);
339 cpu_abort(CPU(dc->cpu), "Unhandled quickimm\n");
345 static unsigned int dec10_setclrf(DisasContext *dc)
348 unsigned int set = ~dc->opcode & 1;
350 flags = EXTRACT_FIELD(dc->ir, 0, 3)
351 | (EXTRACT_FIELD(dc->ir, 12, 15) << 4);
352 LOG_DIS("%s set=%d flags=%x\n", __func__, set, flags);
355 if (flags & X_FLAG) {
357 dc->flags_x = X_FLAG;
362 cris_evaluate_flags (dc);
363 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
364 cris_update_cc_x(dc);
365 tcg_gen_movi_tl(cc_op, dc->cc_op);
368 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags);
370 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS],
371 ~(flags|F_FLAG_V10|P_FLAG_V10));
374 dc->flags_uptodate = 1;
380 static inline void dec10_reg_prep_sext(DisasContext *dc, int size, int sext,
381 TCGv dd, TCGv ds, TCGv sd, TCGv ss)
384 t_gen_sext(dd, sd, size);
385 t_gen_sext(ds, ss, size);
387 t_gen_zext(dd, sd, size);
388 t_gen_zext(ds, ss, size);
392 static void dec10_reg_alu(DisasContext *dc, int op, int size, int sext)
396 t[0] = tcg_temp_new();
397 t[1] = tcg_temp_new();
398 dec10_reg_prep_sext(dc, size, sext,
399 t[0], t[1], cpu_R[dc->dst], cpu_R[dc->src]);
401 if (op == CC_OP_LSL || op == CC_OP_LSR || op == CC_OP_ASR) {
402 tcg_gen_andi_tl(t[1], t[1], 63);
405 assert(dc->dst != 15);
406 cris_alu(dc, op, cpu_R[dc->dst], t[0], t[1], size);
409 static void dec10_reg_bound(DisasContext *dc, int size)
414 t_gen_zext(t, cpu_R[dc->src], size);
415 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
418 static void dec10_reg_mul(DisasContext *dc, int size, int sext)
420 int op = sext ? CC_OP_MULS : CC_OP_MULU;
423 t[0] = tcg_temp_new();
424 t[1] = tcg_temp_new();
425 dec10_reg_prep_sext(dc, size, sext,
426 t[0], t[1], cpu_R[dc->dst], cpu_R[dc->src]);
428 cris_alu(dc, op, cpu_R[dc->dst], t[0], t[1], 4);
432 static void dec10_reg_movs(DisasContext *dc)
434 int size = (dc->size & 1) + 1;
437 LOG_DIS("movx.%d $r%d, $r%d\n", size, dc->src, dc->dst);
438 cris_cc_mask(dc, CC_MASK_NZVC);
442 t_gen_sext(t, cpu_R[dc->src], size);
444 t_gen_zext(t, cpu_R[dc->src], size);
446 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
449 static void dec10_reg_alux(DisasContext *dc, int op)
451 int size = (dc->size & 1) + 1;
454 LOG_DIS("movx.%d $r%d, $r%d\n", size, dc->src, dc->dst);
455 cris_cc_mask(dc, CC_MASK_NZVC);
459 t_gen_sext(t, cpu_R[dc->src], size);
461 t_gen_zext(t, cpu_R[dc->src], size);
463 cris_alu(dc, op, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
466 static void dec10_reg_mov_pr(DisasContext *dc)
468 LOG_DIS("move p%d r%d sz=%d\n", dc->dst, dc->src, preg_sizes_v10[dc->dst]);
471 tcg_gen_mov_tl(env_btarget, cpu_PR[dc->dst]);
472 cris_prepare_jmp(dc, JMP_INDIRECT);
475 if (dc->dst == PR_CCS) {
476 cris_evaluate_flags(dc);
478 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->src],
479 cpu_R[dc->src], cpu_PR[dc->dst], preg_sizes_v10[dc->dst]);
482 static void dec10_reg_abs(DisasContext *dc)
486 LOG_DIS("abs $r%u, $r%u\n", dc->src, dc->dst);
488 assert(dc->dst != 15);
490 tcg_gen_sari_tl(t0, cpu_R[dc->src], 31);
491 tcg_gen_xor_tl(cpu_R[dc->dst], cpu_R[dc->src], t0);
492 tcg_gen_sub_tl(t0, cpu_R[dc->dst], t0);
494 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t0, 4);
497 static void dec10_reg_swap(DisasContext *dc)
501 LOG_DIS("not $r%d, $r%d\n", dc->src, dc->dst);
503 cris_cc_mask(dc, CC_MASK_NZVC);
505 tcg_gen_mov_tl(t0, cpu_R[dc->src]);
507 tcg_gen_not_tl(t0, t0);
514 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->src], cpu_R[dc->src], t0, 4);
517 static void dec10_reg_scc(DisasContext *dc)
521 LOG_DIS("s%s $r%u\n", cc_name(cond), dc->src);
523 gen_tst_cc(dc, cpu_R[dc->src], cond);
524 tcg_gen_setcondi_tl(TCG_COND_NE, cpu_R[dc->src], cpu_R[dc->src], 0);
529 static unsigned int dec10_reg(DisasContext *dc)
532 unsigned int insn_len = 2;
533 unsigned int size = dec10_size(dc->size);
537 switch (dc->opcode) {
538 case CRISV10_REG_MOVE_R:
539 LOG_DIS("move.%d $r%d, $r%d\n", dc->size, dc->src, dc->dst);
540 cris_cc_mask(dc, CC_MASK_NZVC);
541 dec10_reg_alu(dc, CC_OP_MOVE, size, 0);
543 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
544 cris_prepare_jmp(dc, JMP_INDIRECT);
545 dc->delayed_branch = 1;
548 case CRISV10_REG_MOVX:
549 cris_cc_mask(dc, CC_MASK_NZVC);
552 case CRISV10_REG_ADDX:
553 cris_cc_mask(dc, CC_MASK_NZVC);
554 dec10_reg_alux(dc, CC_OP_ADD);
556 case CRISV10_REG_SUBX:
557 cris_cc_mask(dc, CC_MASK_NZVC);
558 dec10_reg_alux(dc, CC_OP_SUB);
560 case CRISV10_REG_ADD:
561 LOG_DIS("add $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
562 cris_cc_mask(dc, CC_MASK_NZVC);
563 dec10_reg_alu(dc, CC_OP_ADD, size, 0);
565 case CRISV10_REG_SUB:
566 LOG_DIS("sub $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
567 cris_cc_mask(dc, CC_MASK_NZVC);
568 dec10_reg_alu(dc, CC_OP_SUB, size, 0);
570 case CRISV10_REG_CMP:
571 LOG_DIS("cmp $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
572 cris_cc_mask(dc, CC_MASK_NZVC);
573 dec10_reg_alu(dc, CC_OP_CMP, size, 0);
575 case CRISV10_REG_BOUND:
576 LOG_DIS("bound $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
577 cris_cc_mask(dc, CC_MASK_NZVC);
578 dec10_reg_bound(dc, size);
580 case CRISV10_REG_AND:
581 LOG_DIS("and $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
582 cris_cc_mask(dc, CC_MASK_NZVC);
583 dec10_reg_alu(dc, CC_OP_AND, size, 0);
585 case CRISV10_REG_ADDI:
591 LOG_DIS("addi r%d r%d size=%d\n", dc->src, dc->dst, dc->size);
592 tcg_gen_shli_tl(t, cpu_R[dc->dst], dc->size & 3);
593 tcg_gen_add_tl(cpu_R[dc->src], cpu_R[dc->src], t);
595 case CRISV10_REG_LSL:
596 LOG_DIS("lsl $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_LSL, size, 0);
600 case CRISV10_REG_LSR:
601 LOG_DIS("lsr $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
602 cris_cc_mask(dc, CC_MASK_NZVC);
603 dec10_reg_alu(dc, CC_OP_LSR, size, 0);
605 case CRISV10_REG_ASR:
606 LOG_DIS("asr $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_ASR, size, 1);
611 LOG_DIS("or $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
612 cris_cc_mask(dc, CC_MASK_NZVC);
613 dec10_reg_alu(dc, CC_OP_OR, size, 0);
615 case CRISV10_REG_NEG:
616 LOG_DIS("neg $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
617 cris_cc_mask(dc, CC_MASK_NZVC);
618 dec10_reg_alu(dc, CC_OP_NEG, size, 0);
620 case CRISV10_REG_BIAP:
621 LOG_DIS("BIAP pc=%x reg %d r%d r%d size=%d\n", dc->pc,
622 dc->opcode, dc->src, dc->dst, size);
624 case 4: tmp = 2; break;
625 case 2: tmp = 1; break;
626 case 1: tmp = 0; break;
628 cpu_abort(CPU(dc->cpu), "Unhandled BIAP");
633 tcg_gen_shli_tl(t, cpu_R[dc->dst], tmp);
635 tcg_gen_addi_tl(cpu_PR[PR_PREFIX], t, ((dc->pc +2)| 1) + 1);
637 tcg_gen_add_tl(cpu_PR[PR_PREFIX], cpu_R[dc->src], t);
643 LOG_DIS("pc=%x reg %d r%d r%d\n", dc->pc,
644 dc->opcode, dc->src, dc->dst);
645 cpu_abort(CPU(dc->cpu), "Unhandled opcode");
649 switch (dc->opcode) {
650 case CRISV10_REG_MOVX:
651 cris_cc_mask(dc, CC_MASK_NZVC);
654 case CRISV10_REG_ADDX:
655 cris_cc_mask(dc, CC_MASK_NZVC);
656 dec10_reg_alux(dc, CC_OP_ADD);
658 case CRISV10_REG_SUBX:
659 cris_cc_mask(dc, CC_MASK_NZVC);
660 dec10_reg_alux(dc, CC_OP_SUB);
662 case CRISV10_REG_MOVE_SPR_R:
663 cris_evaluate_flags(dc);
665 dec10_reg_mov_pr(dc);
667 case CRISV10_REG_MOVE_R_SPR:
668 LOG_DIS("move r%d p%d\n", dc->src, dc->dst);
669 cris_evaluate_flags(dc);
670 if (dc->src != 11) /* fast for srp. */
671 dc->cpustate_changed = 1;
672 t_gen_mov_preg_TN(dc, dc->dst, cpu_R[dc->src]);
674 case CRISV10_REG_SETF:
675 case CRISV10_REG_CLEARF:
678 case CRISV10_REG_SWAP:
681 case CRISV10_REG_ABS:
682 cris_cc_mask(dc, CC_MASK_NZVC);
686 LOG_DIS("lz $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
687 cris_cc_mask(dc, CC_MASK_NZVC);
688 dec10_reg_alu(dc, CC_OP_LZ, 4, 0);
690 case CRISV10_REG_XOR:
691 LOG_DIS("xor $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
692 cris_cc_mask(dc, CC_MASK_NZVC);
693 dec10_reg_alu(dc, CC_OP_XOR, 4, 0);
695 case CRISV10_REG_BTST:
696 LOG_DIS("btst $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
697 cris_cc_mask(dc, CC_MASK_NZVC);
698 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
699 gen_helper_btst(cpu_PR[PR_CCS], tcg_env, cpu_R[dc->dst],
700 cpu_R[dc->src], cpu_PR[PR_CCS]);
702 case CRISV10_REG_DSTEP:
703 LOG_DIS("dstep $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
704 cris_cc_mask(dc, CC_MASK_NZVC);
705 cris_alu(dc, CC_OP_DSTEP, cpu_R[dc->dst],
706 cpu_R[dc->dst], cpu_R[dc->src], 4);
708 case CRISV10_REG_MSTEP:
709 LOG_DIS("mstep $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
710 cris_evaluate_flags(dc);
711 cris_cc_mask(dc, CC_MASK_NZVC);
712 cris_alu(dc, CC_OP_MSTEP, cpu_R[dc->dst],
713 cpu_R[dc->dst], cpu_R[dc->src], 4);
715 case CRISV10_REG_SCC:
719 LOG_DIS("pc=%x reg %d r%d r%d\n", dc->pc,
720 dc->opcode, dc->src, dc->dst);
721 cpu_abort(CPU(dc->cpu), "Unhandled opcode");
728 static unsigned int dec10_ind_move_m_r(CPUCRISState *env, DisasContext *dc,
731 unsigned int insn_len = 2;
734 LOG_DIS("%s: move.%d [$r%d], $r%d\n", __func__,
735 size, dc->src, dc->dst);
737 cris_cc_mask(dc, CC_MASK_NZVC);
739 insn_len += dec10_prep_move_m(env, dc, 0, size, t);
740 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t, size);
742 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
743 cris_prepare_jmp(dc, JMP_INDIRECT);
744 dc->delayed_branch = 1;
750 static unsigned int dec10_ind_move_r_m(DisasContext *dc, unsigned int size)
752 unsigned int insn_len = 2;
755 LOG_DIS("move.%d $r%d, [$r%d]\n", dc->size, dc->src, dc->dst);
756 addr = tcg_temp_new();
757 crisv10_prepare_memaddr(dc, addr, size);
758 gen_store_v10(dc, addr, cpu_R[dc->dst], size);
759 insn_len += crisv10_post_memaddr(dc, size);
764 static unsigned int dec10_ind_move_m_pr(CPUCRISState *env, DisasContext *dc)
766 unsigned int insn_len = 2, rd = dc->dst;
769 LOG_DIS("move.%d $p%d, [$r%d]\n", dc->size, dc->dst, dc->src);
773 insn_len += dec10_prep_move_m(env, dc, 0, 4, t);
775 tcg_gen_mov_tl(env_btarget, t);
776 cris_prepare_jmp(dc, JMP_INDIRECT);
777 dc->delayed_branch = 1;
779 tcg_gen_mov_tl(cpu_PR[rd], t);
780 dc->cpustate_changed = 1;
785 static unsigned int dec10_ind_move_pr_m(DisasContext *dc)
787 unsigned int insn_len = 2, size = preg_sizes_v10[dc->dst];
790 LOG_DIS("move.%d $p%d, [$r%d]\n", dc->size, dc->dst, dc->src);
792 addr = tcg_temp_new();
793 crisv10_prepare_memaddr(dc, addr, size);
794 if (dc->dst == PR_CCS) {
796 cris_evaluate_flags(dc);
797 tcg_gen_andi_tl(t0, cpu_PR[PR_CCS], ~PFIX_FLAG);
798 gen_store_v10(dc, addr, t0, size);
800 gen_store_v10(dc, addr, cpu_PR[dc->dst], size);
802 insn_len += crisv10_post_memaddr(dc, size);
808 static void dec10_movem_r_m(DisasContext *dc)
810 int i, pfix = dc->tb_flags & PFIX_FLAG;
813 LOG_DIS("%s r%d, [r%d] pi=%d ir=%x\n", __func__,
814 dc->dst, dc->src, dc->postinc, dc->ir);
816 addr = tcg_temp_new();
818 crisv10_prepare_memaddr(dc, addr, 4);
819 tcg_gen_mov_tl(t0, addr);
820 for (i = dc->dst; i >= 0; i--) {
821 if ((pfix && dc->mode == CRISV10_MODE_AUTOINC) && dc->src == i) {
822 gen_store_v10(dc, addr, t0, 4);
824 gen_store_v10(dc, addr, cpu_R[i], 4);
826 tcg_gen_addi_tl(addr, addr, 4);
829 if (pfix && dc->mode == CRISV10_MODE_AUTOINC) {
830 tcg_gen_mov_tl(cpu_R[dc->src], t0);
833 if (!pfix && dc->mode == CRISV10_MODE_AUTOINC) {
834 tcg_gen_mov_tl(cpu_R[dc->src], addr);
838 static void dec10_movem_m_r(DisasContext *dc)
840 int i, pfix = dc->tb_flags & PFIX_FLAG;
843 LOG_DIS("%s [r%d], r%d pi=%d ir=%x\n", __func__,
844 dc->src, dc->dst, dc->postinc, dc->ir);
846 addr = tcg_temp_new();
848 crisv10_prepare_memaddr(dc, addr, 4);
849 tcg_gen_mov_tl(t0, addr);
850 for (i = dc->dst; i >= 0; i--) {
851 gen_load(dc, cpu_R[i], addr, 4, 0);
852 tcg_gen_addi_tl(addr, addr, 4);
855 if (pfix && dc->mode == CRISV10_MODE_AUTOINC) {
856 tcg_gen_mov_tl(cpu_R[dc->src], t0);
859 if (!pfix && dc->mode == CRISV10_MODE_AUTOINC) {
860 tcg_gen_mov_tl(cpu_R[dc->src], addr);
864 static int dec10_ind_alu(CPUCRISState *env, DisasContext *dc,
865 int op, unsigned int size)
871 cris_alu_m_alloc_temps(t);
872 insn_len += dec10_prep_move_m(env, dc, 0, size, t[0]);
873 cris_alu(dc, op, cpu_R[dc->dst], cpu_R[rd], t[0], size);
875 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
876 cris_prepare_jmp(dc, JMP_INDIRECT);
877 dc->delayed_branch = 1;
883 static int dec10_ind_bound(CPUCRISState *env, DisasContext *dc,
891 insn_len += dec10_prep_move_m(env, dc, 0, size, t);
892 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->dst], cpu_R[rd], t, 4);
894 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
895 cris_prepare_jmp(dc, JMP_INDIRECT);
896 dc->delayed_branch = 1;
902 static int dec10_alux_m(CPUCRISState *env, DisasContext *dc, int op)
904 unsigned int size = (dc->size & 1) ? 2 : 1;
905 unsigned int sx = !!(dc->size & 2);
910 LOG_DIS("addx size=%d sx=%d op=%d %d\n", size, sx, dc->src, dc->dst);
914 cris_cc_mask(dc, CC_MASK_NZVC);
915 insn_len += dec10_prep_move_m(env, dc, sx, size, t);
916 cris_alu(dc, op, cpu_R[dc->dst], cpu_R[rd], t, 4);
918 tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
919 cris_prepare_jmp(dc, JMP_INDIRECT);
920 dc->delayed_branch = 1;
926 static int dec10_dip(CPUCRISState *env, DisasContext *dc)
931 LOG_DIS("dip pc=%x opcode=%d r%d r%d\n",
932 dc->pc, dc->opcode, dc->src, dc->dst);
934 imm = cpu_ldl_code(env, dc->pc + 2);
935 tcg_gen_movi_tl(cpu_PR[PR_PREFIX], imm);
938 tcg_gen_addi_tl(cpu_R[15], cpu_R[15], insn_len - 2);
940 gen_load(dc, cpu_PR[PR_PREFIX], cpu_R[dc->src], 4, 0);
942 tcg_gen_addi_tl(cpu_R[dc->src], cpu_R[dc->src], 4);
949 static int dec10_bdap_m(CPUCRISState *env, DisasContext *dc, int size)
954 LOG_DIS("bdap_m pc=%x opcode=%d r%d r%d sz=%d\n",
955 dc->pc, dc->opcode, dc->src, dc->dst, size);
957 assert(dc->dst != 15);
959 /* 8bit embedded offset? */
960 if (!dc->postinc && (dc->ir & (1 << 11))) {
961 int simm = dc->ir & 0xff;
963 /* cpu_abort(CPU(dc->cpu), "Unhandled opcode"); */
967 tcg_gen_addi_tl(cpu_PR[PR_PREFIX], cpu_R[dc->dst], simm);
973 /* Now the rest of the modes are truly indirect. */
974 insn_len += dec10_prep_move_m(env, dc, 1, size, cpu_PR[PR_PREFIX]);
975 tcg_gen_add_tl(cpu_PR[PR_PREFIX], cpu_PR[PR_PREFIX], cpu_R[rd]);
980 static unsigned int dec10_ind(CPUCRISState *env, DisasContext *dc)
982 unsigned int insn_len = 2;
983 unsigned int size = dec10_size(dc->size);
989 switch (dc->opcode) {
990 case CRISV10_IND_MOVE_M_R:
991 return dec10_ind_move_m_r(env, dc, size);
992 case CRISV10_IND_MOVE_R_M:
993 return dec10_ind_move_r_m(dc, size);
994 case CRISV10_IND_CMP:
995 LOG_DIS("cmp size=%d op=%d %d\n", size, dc->src, dc->dst);
996 cris_cc_mask(dc, CC_MASK_NZVC);
997 insn_len += dec10_ind_alu(env, dc, CC_OP_CMP, size);
999 case CRISV10_IND_TEST:
1000 LOG_DIS("test size=%d op=%d %d\n", size, dc->src, dc->dst);
1002 cris_evaluate_flags(dc);
1003 cris_cc_mask(dc, CC_MASK_NZVC);
1004 cris_alu_m_alloc_temps(t);
1005 insn_len += dec10_prep_move_m(env, dc, 0, size, t[0]);
1006 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3);
1007 c = tcg_constant_tl(0);
1008 cris_alu(dc, CC_OP_CMP, cpu_R[dc->dst],
1011 case CRISV10_IND_ADD:
1012 LOG_DIS("add size=%d op=%d %d\n", size, dc->src, dc->dst);
1013 cris_cc_mask(dc, CC_MASK_NZVC);
1014 insn_len += dec10_ind_alu(env, dc, CC_OP_ADD, size);
1016 case CRISV10_IND_SUB:
1017 LOG_DIS("sub size=%d op=%d %d\n", size, dc->src, dc->dst);
1018 cris_cc_mask(dc, CC_MASK_NZVC);
1019 insn_len += dec10_ind_alu(env, dc, CC_OP_SUB, size);
1021 case CRISV10_IND_BOUND:
1022 LOG_DIS("bound size=%d op=%d %d\n", size, dc->src, dc->dst);
1023 cris_cc_mask(dc, CC_MASK_NZVC);
1024 insn_len += dec10_ind_bound(env, dc, size);
1026 case CRISV10_IND_AND:
1027 LOG_DIS("and size=%d op=%d %d\n", size, dc->src, dc->dst);
1028 cris_cc_mask(dc, CC_MASK_NZVC);
1029 insn_len += dec10_ind_alu(env, dc, CC_OP_AND, size);
1031 case CRISV10_IND_OR:
1032 LOG_DIS("or size=%d op=%d %d\n", size, dc->src, dc->dst);
1033 cris_cc_mask(dc, CC_MASK_NZVC);
1034 insn_len += dec10_ind_alu(env, dc, CC_OP_OR, size);
1036 case CRISV10_IND_MOVX:
1037 insn_len = dec10_alux_m(env, dc, CC_OP_MOVE);
1039 case CRISV10_IND_ADDX:
1040 insn_len = dec10_alux_m(env, dc, CC_OP_ADD);
1042 case CRISV10_IND_SUBX:
1043 insn_len = dec10_alux_m(env, dc, CC_OP_SUB);
1045 case CRISV10_IND_CMPX:
1046 insn_len = dec10_alux_m(env, dc, CC_OP_CMP);
1048 case CRISV10_IND_MUL:
1049 /* This is a reg insn coded in the mem indir space. */
1050 LOG_DIS("mul pc=%x opcode=%d\n", dc->pc, dc->opcode);
1051 cris_cc_mask(dc, CC_MASK_NZVC);
1052 dec10_reg_mul(dc, size, dc->ir & (1 << 10));
1054 case CRISV10_IND_BDAP_M:
1055 insn_len = dec10_bdap_m(env, dc, size);
1061 * Instruction format: ADDC [Rs],Rd
1063 * +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+-+
1064 * |Destination(Rd)| 1 0 0 1 1 0 1 0 | Source(Rs)|
1065 * +---+---+---+---+---+---+---+---+---+---+---+---+---+---+--+--+
1067 * Instruction format: ADDC [Rs+],Rd
1069 * +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+-+
1070 * |Destination(Rd)| 1 1 0 1 1 0 1 0 | Source(Rs)|
1071 * +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+-+
1073 if (dc->opcode == CRISV17_IND_ADDC && dc->size == 2 &&
1074 env->pregs[PR_VR] == 17) {
1075 LOG_DIS("addc op=%d %d\n", dc->src, dc->dst);
1076 cris_cc_mask(dc, CC_MASK_NZVC);
1077 insn_len += dec10_ind_alu(env, dc, CC_OP_ADDC, size);
1081 LOG_DIS("pc=%x var-ind.%d %d r%d r%d\n",
1082 dc->pc, size, dc->opcode, dc->src, dc->dst);
1083 cpu_abort(CPU(dc->cpu), "Unhandled opcode");
1089 switch (dc->opcode) {
1090 case CRISV10_IND_MOVE_M_SPR:
1091 insn_len = dec10_ind_move_m_pr(env, dc);
1093 case CRISV10_IND_MOVE_SPR_M:
1094 insn_len = dec10_ind_move_pr_m(dc);
1096 case CRISV10_IND_JUMP_M:
1097 if (dc->src == 15) {
1098 LOG_DIS("jump.%d %d r%d r%d direct\n", size,
1099 dc->opcode, dc->src, dc->dst);
1100 imm = cpu_ldl_code(env, dc->pc + 2);
1101 if (dc->mode == CRISV10_MODE_AUTOINC)
1104 c = tcg_constant_tl(dc->pc + insn_len);
1105 t_gen_mov_preg_TN(dc, dc->dst, c);
1107 cris_prepare_jmp(dc, JMP_DIRECT);
1108 dc->delayed_branch--; /* v10 has no dslot here. */
1110 if (dc->dst == 14) {
1111 LOG_DIS("break %d\n", dc->src);
1112 cris_evaluate_flags(dc);
1113 tcg_gen_movi_tl(env_pc, dc->pc + 2);
1114 c = tcg_constant_tl(dc->src + 2);
1115 t_gen_mov_env_TN(trap_vector, c);
1116 t_gen_raise_exception(EXCP_BREAK);
1117 dc->base.is_jmp = DISAS_NORETURN;
1120 LOG_DIS("%d: jump.%d %d r%d r%d\n", __LINE__, size,
1121 dc->opcode, dc->src, dc->dst);
1122 t[0] = tcg_temp_new();
1123 c = tcg_constant_tl(dc->pc + insn_len);
1124 t_gen_mov_preg_TN(dc, dc->dst, c);
1125 crisv10_prepare_memaddr(dc, t[0], size);
1126 gen_load(dc, env_btarget, t[0], 4, 0);
1127 insn_len += crisv10_post_memaddr(dc, size);
1128 cris_prepare_jmp(dc, JMP_INDIRECT);
1129 dc->delayed_branch--; /* v10 has no dslot here. */
1133 case CRISV10_IND_MOVEM_R_M:
1134 LOG_DIS("movem_r_m pc=%x opcode=%d r%d r%d\n",
1135 dc->pc, dc->opcode, dc->dst, dc->src);
1136 dec10_movem_r_m(dc);
1138 case CRISV10_IND_MOVEM_M_R:
1139 LOG_DIS("movem_m_r pc=%x opcode=%d\n", dc->pc, dc->opcode);
1140 dec10_movem_m_r(dc);
1142 case CRISV10_IND_JUMP_R:
1143 LOG_DIS("jmp pc=%x opcode=%d r%d r%d\n",
1144 dc->pc, dc->opcode, dc->dst, dc->src);
1145 tcg_gen_mov_tl(env_btarget, cpu_R[dc->src]);
1146 c = tcg_constant_tl(dc->pc + insn_len);
1147 t_gen_mov_preg_TN(dc, dc->dst, c);
1148 cris_prepare_jmp(dc, JMP_INDIRECT);
1149 dc->delayed_branch--; /* v10 has no dslot here. */
1151 case CRISV10_IND_MOVX:
1152 insn_len = dec10_alux_m(env, dc, CC_OP_MOVE);
1154 case CRISV10_IND_ADDX:
1155 insn_len = dec10_alux_m(env, dc, CC_OP_ADD);
1157 case CRISV10_IND_SUBX:
1158 insn_len = dec10_alux_m(env, dc, CC_OP_SUB);
1160 case CRISV10_IND_CMPX:
1161 insn_len = dec10_alux_m(env, dc, CC_OP_CMP);
1163 case CRISV10_IND_DIP:
1164 insn_len = dec10_dip(env, dc);
1166 case CRISV10_IND_BCC_M:
1168 cris_cc_mask(dc, 0);
1169 simm = cpu_ldsw_code(env, dc->pc + 2);
1172 LOG_DIS("bcc_m: b%s %x\n", cc_name(dc->cond), dc->pc + simm);
1173 cris_prepare_cc_branch(dc, simm, dc->cond);
1177 LOG_DIS("ERROR pc=%x opcode=%d\n", dc->pc, dc->opcode);
1178 cpu_abort(CPU(dc->cpu), "Unhandled opcode");
1185 static unsigned int crisv10_decoder(CPUCRISState *env, DisasContext *dc)
1187 unsigned int insn_len = 2;
1189 /* Load a halfword onto the instruction register. */
1190 dc->ir = cpu_lduw_code(env, dc->pc);
1192 /* Now decode it. */
1193 dc->opcode = EXTRACT_FIELD(dc->ir, 6, 9);
1194 dc->mode = EXTRACT_FIELD(dc->ir, 10, 11);
1195 dc->src = EXTRACT_FIELD(dc->ir, 0, 3);
1196 dc->size = EXTRACT_FIELD(dc->ir, 4, 5);
1197 dc->cond = dc->dst = EXTRACT_FIELD(dc->ir, 12, 15);
1198 dc->postinc = EXTRACT_FIELD(dc->ir, 10, 10);
1200 dc->clear_prefix = 1;
1202 /* FIXME: What if this insn insn't 2 in length?? */
1203 if (dc->src == 15 || dc->dst == 15)
1204 tcg_gen_movi_tl(cpu_R[15], dc->pc + 2);
1207 case CRISV10_MODE_QIMMEDIATE:
1208 insn_len = dec10_quick_imm(dc);
1210 case CRISV10_MODE_REG:
1211 insn_len = dec10_reg(dc);
1213 case CRISV10_MODE_AUTOINC:
1214 case CRISV10_MODE_INDIRECT:
1215 insn_len = dec10_ind(env, dc);
1219 if (dc->clear_prefix && dc->tb_flags & PFIX_FLAG) {
1220 dc->tb_flags &= ~PFIX_FLAG;
1221 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~PFIX_FLAG);
1222 if (dc->tb_flags != dc->base.tb->flags) {
1223 dc->cpustate_changed = 1;
1227 /* CRISv10 locks out interrupts on dslots. */
1228 if (dc->delayed_branch == 2) {
1234 void cris_initialize_crisv10_tcg(void)
1238 cc_x = tcg_global_mem_new(tcg_env,
1239 offsetof(CPUCRISState, cc_x), "cc_x");
1240 cc_src = tcg_global_mem_new(tcg_env,
1241 offsetof(CPUCRISState, cc_src), "cc_src");
1242 cc_dest = tcg_global_mem_new(tcg_env,
1243 offsetof(CPUCRISState, cc_dest),
1245 cc_result = tcg_global_mem_new(tcg_env,
1246 offsetof(CPUCRISState, cc_result),
1248 cc_op = tcg_global_mem_new(tcg_env,
1249 offsetof(CPUCRISState, cc_op), "cc_op");
1250 cc_size = tcg_global_mem_new(tcg_env,
1251 offsetof(CPUCRISState, cc_size),
1253 cc_mask = tcg_global_mem_new(tcg_env,
1254 offsetof(CPUCRISState, cc_mask),
1257 env_pc = tcg_global_mem_new(tcg_env,
1258 offsetof(CPUCRISState, pc),
1260 env_btarget = tcg_global_mem_new(tcg_env,
1261 offsetof(CPUCRISState, btarget),
1263 env_btaken = tcg_global_mem_new(tcg_env,
1264 offsetof(CPUCRISState, btaken),
1266 for (i = 0; i < 16; i++) {
1267 cpu_R[i] = tcg_global_mem_new(tcg_env,
1268 offsetof(CPUCRISState, regs[i]),
1271 for (i = 0; i < 16; i++) {
1272 cpu_PR[i] = tcg_global_mem_new(tcg_env,
1273 offsetof(CPUCRISState, pregs[i]),