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1 /*
2 * CRIS emulation for qemu: main translation routines.
3 *
4 * Copyright (c) 2008 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 /*
22 * FIXME:
23 * The condition code translation is in need of attention.
24 */
25
26 #include "cpu.h"
27 #include "disas/disas.h"
28 #include "tcg-op.h"
29 #include "helper.h"
30 #include "mmu.h"
31 #include "crisv32-decode.h"
32
33 #define GEN_HELPER 1
34 #include "helper.h"
35
36 #define DISAS_CRIS 0
37 #if DISAS_CRIS
38 # define LOG_DIS(...) qemu_log_mask(CPU_LOG_TB_IN_ASM, ## __VA_ARGS__)
39 #else
40 # define LOG_DIS(...) do { } while (0)
41 #endif
42
43 #define D(x)
44 #define BUG() (gen_BUG(dc, __FILE__, __LINE__))
45 #define BUG_ON(x) ({if (x) BUG();})
46
47 #define DISAS_SWI 5
48
49 /* Used by the decoder. */
50 #define EXTRACT_FIELD(src, start, end) \
51 (((src) >> start) & ((1 << (end - start + 1)) - 1))
52
53 #define CC_MASK_NZ 0xc
54 #define CC_MASK_NZV 0xe
55 #define CC_MASK_NZVC 0xf
56 #define CC_MASK_RNZV 0x10e
57
58 static TCGv_ptr cpu_env;
59 static TCGv cpu_R[16];
60 static TCGv cpu_PR[16];
61 static TCGv cc_x;
62 static TCGv cc_src;
63 static TCGv cc_dest;
64 static TCGv cc_result;
65 static TCGv cc_op;
66 static TCGv cc_size;
67 static TCGv cc_mask;
68
69 static TCGv env_btaken;
70 static TCGv env_btarget;
71 static TCGv env_pc;
72
73 #include "exec/gen-icount.h"
74
75 /* This is the state at translation time. */
76 typedef struct DisasContext {
77 CPUCRISState *env;
78 target_ulong pc, ppc;
79
80 /* Decoder. */
81 unsigned int (*decoder)(CPUCRISState *env, struct DisasContext *dc);
82 uint32_t ir;
83 uint32_t opcode;
84 unsigned int op1;
85 unsigned int op2;
86 unsigned int zsize, zzsize;
87 unsigned int mode;
88 unsigned int postinc;
89
90 unsigned int size;
91 unsigned int src;
92 unsigned int dst;
93 unsigned int cond;
94
95 int update_cc;
96 int cc_op;
97 int cc_size;
98 uint32_t cc_mask;
99
100 int cc_size_uptodate; /* -1 invalid or last written value. */
101
102 int cc_x_uptodate; /* 1 - ccs, 2 - known | X_FLAG. 0 not uptodate. */
103 int flags_uptodate; /* Wether or not $ccs is uptodate. */
104 int flagx_known; /* Wether or not flags_x has the x flag known at
105 translation time. */
106 int flags_x;
107
108 int clear_x; /* Clear x after this insn? */
109 int clear_prefix; /* Clear prefix after this insn? */
110 int clear_locked_irq; /* Clear the irq lockout. */
111 int cpustate_changed;
112 unsigned int tb_flags; /* tb dependent flags. */
113 int is_jmp;
114
115 #define JMP_NOJMP 0
116 #define JMP_DIRECT 1
117 #define JMP_DIRECT_CC 2
118 #define JMP_INDIRECT 3
119 int jmp; /* 0=nojmp, 1=direct, 2=indirect. */
120 uint32_t jmp_pc;
121
122 int delayed_branch;
123
124 struct TranslationBlock *tb;
125 int singlestep_enabled;
126 } DisasContext;
127
128 static void gen_BUG(DisasContext *dc, const char *file, int line)
129 {
130 printf("BUG: pc=%x %s %d\n", dc->pc, file, line);
131 qemu_log("BUG: pc=%x %s %d\n", dc->pc, file, line);
132 cpu_abort(dc->env, "%s:%d\n", file, line);
133 }
134
135 static const char *regnames[] =
136 {
137 "$r0", "$r1", "$r2", "$r3",
138 "$r4", "$r5", "$r6", "$r7",
139 "$r8", "$r9", "$r10", "$r11",
140 "$r12", "$r13", "$sp", "$acr",
141 };
142 static const char *pregnames[] =
143 {
144 "$bz", "$vr", "$pid", "$srs",
145 "$wz", "$exs", "$eda", "$mof",
146 "$dz", "$ebp", "$erp", "$srp",
147 "$nrp", "$ccs", "$usp", "$spc",
148 };
149
150 /* We need this table to handle preg-moves with implicit width. */
151 static int preg_sizes[] = {
152 1, /* bz. */
153 1, /* vr. */
154 4, /* pid. */
155 1, /* srs. */
156 2, /* wz. */
157 4, 4, 4,
158 4, 4, 4, 4,
159 4, 4, 4, 4,
160 };
161
162 #define t_gen_mov_TN_env(tn, member) \
163 _t_gen_mov_TN_env((tn), offsetof(CPUCRISState, member))
164 #define t_gen_mov_env_TN(member, tn) \
165 _t_gen_mov_env_TN(offsetof(CPUCRISState, member), (tn))
166
167 static inline void t_gen_mov_TN_reg(TCGv tn, int r)
168 {
169 if (r < 0 || r > 15) {
170 fprintf(stderr, "wrong register read $r%d\n", r);
171 }
172 tcg_gen_mov_tl(tn, cpu_R[r]);
173 }
174 static inline void t_gen_mov_reg_TN(int r, TCGv tn)
175 {
176 if (r < 0 || r > 15) {
177 fprintf(stderr, "wrong register write $r%d\n", r);
178 }
179 tcg_gen_mov_tl(cpu_R[r], tn);
180 }
181
182 static inline void _t_gen_mov_TN_env(TCGv tn, int offset)
183 {
184 if (offset > sizeof(CPUCRISState)) {
185 fprintf(stderr, "wrong load from env from off=%d\n", offset);
186 }
187 tcg_gen_ld_tl(tn, cpu_env, offset);
188 }
189 static inline void _t_gen_mov_env_TN(int offset, TCGv tn)
190 {
191 if (offset > sizeof(CPUCRISState)) {
192 fprintf(stderr, "wrong store to env at off=%d\n", offset);
193 }
194 tcg_gen_st_tl(tn, cpu_env, offset);
195 }
196
197 static inline void t_gen_mov_TN_preg(TCGv tn, int r)
198 {
199 if (r < 0 || r > 15) {
200 fprintf(stderr, "wrong register read $p%d\n", r);
201 }
202 if (r == PR_BZ || r == PR_WZ || r == PR_DZ) {
203 tcg_gen_mov_tl(tn, tcg_const_tl(0));
204 } else if (r == PR_VR) {
205 tcg_gen_mov_tl(tn, tcg_const_tl(32));
206 } else {
207 tcg_gen_mov_tl(tn, cpu_PR[r]);
208 }
209 }
210 static inline void t_gen_mov_preg_TN(DisasContext *dc, int r, TCGv tn)
211 {
212 if (r < 0 || r > 15) {
213 fprintf(stderr, "wrong register write $p%d\n", r);
214 }
215 if (r == PR_BZ || r == PR_WZ || r == PR_DZ) {
216 return;
217 } else if (r == PR_SRS) {
218 tcg_gen_andi_tl(cpu_PR[r], tn, 3);
219 } else {
220 if (r == PR_PID) {
221 gen_helper_tlb_flush_pid(cpu_env, tn);
222 }
223 if (dc->tb_flags & S_FLAG && r == PR_SPC) {
224 gen_helper_spc_write(cpu_env, tn);
225 } else if (r == PR_CCS) {
226 dc->cpustate_changed = 1;
227 }
228 tcg_gen_mov_tl(cpu_PR[r], tn);
229 }
230 }
231
232 /* Sign extend at translation time. */
233 static int sign_extend(unsigned int val, unsigned int width)
234 {
235 int sval;
236
237 /* LSL. */
238 val <<= 31 - width;
239 sval = val;
240 /* ASR. */
241 sval >>= 31 - width;
242 return sval;
243 }
244
245 static int cris_fetch(CPUCRISState *env, DisasContext *dc, uint32_t addr,
246 unsigned int size, unsigned int sign)
247 {
248 int r;
249
250 switch (size) {
251 case 4:
252 {
253 r = cpu_ldl_code(env, addr);
254 break;
255 }
256 case 2:
257 {
258 if (sign) {
259 r = cpu_ldsw_code(env, addr);
260 } else {
261 r = cpu_lduw_code(env, addr);
262 }
263 break;
264 }
265 case 1:
266 {
267 if (sign) {
268 r = cpu_ldsb_code(env, addr);
269 } else {
270 r = cpu_ldub_code(env, addr);
271 }
272 break;
273 }
274 default:
275 cpu_abort(dc->env, "Invalid fetch size %d\n", size);
276 break;
277 }
278 return r;
279 }
280
281 static void cris_lock_irq(DisasContext *dc)
282 {
283 dc->clear_locked_irq = 0;
284 t_gen_mov_env_TN(locked_irq, tcg_const_tl(1));
285 }
286
287 static inline void t_gen_raise_exception(uint32_t index)
288 {
289 TCGv_i32 tmp = tcg_const_i32(index);
290 gen_helper_raise_exception(cpu_env, tmp);
291 tcg_temp_free_i32(tmp);
292 }
293
294 static void t_gen_lsl(TCGv d, TCGv a, TCGv b)
295 {
296 TCGv t0, t_31;
297
298 t0 = tcg_temp_new();
299 t_31 = tcg_const_tl(31);
300 tcg_gen_shl_tl(d, a, b);
301
302 tcg_gen_sub_tl(t0, t_31, b);
303 tcg_gen_sar_tl(t0, t0, t_31);
304 tcg_gen_and_tl(t0, t0, d);
305 tcg_gen_xor_tl(d, d, t0);
306 tcg_temp_free(t0);
307 tcg_temp_free(t_31);
308 }
309
310 static void t_gen_lsr(TCGv d, TCGv a, TCGv b)
311 {
312 TCGv t0, t_31;
313
314 t0 = tcg_temp_new();
315 t_31 = tcg_temp_new();
316 tcg_gen_shr_tl(d, a, b);
317
318 tcg_gen_movi_tl(t_31, 31);
319 tcg_gen_sub_tl(t0, t_31, b);
320 tcg_gen_sar_tl(t0, t0, t_31);
321 tcg_gen_and_tl(t0, t0, d);
322 tcg_gen_xor_tl(d, d, t0);
323 tcg_temp_free(t0);
324 tcg_temp_free(t_31);
325 }
326
327 static void t_gen_asr(TCGv d, TCGv a, TCGv b)
328 {
329 TCGv t0, t_31;
330
331 t0 = tcg_temp_new();
332 t_31 = tcg_temp_new();
333 tcg_gen_sar_tl(d, a, b);
334
335 tcg_gen_movi_tl(t_31, 31);
336 tcg_gen_sub_tl(t0, t_31, b);
337 tcg_gen_sar_tl(t0, t0, t_31);
338 tcg_gen_or_tl(d, d, t0);
339 tcg_temp_free(t0);
340 tcg_temp_free(t_31);
341 }
342
343 static void t_gen_cris_dstep(TCGv d, TCGv a, TCGv b)
344 {
345 int l1;
346
347 l1 = gen_new_label();
348
349 /*
350 * d <<= 1
351 * if (d >= s)
352 * d -= s;
353 */
354 tcg_gen_shli_tl(d, a, 1);
355 tcg_gen_brcond_tl(TCG_COND_LTU, d, b, l1);
356 tcg_gen_sub_tl(d, d, b);
357 gen_set_label(l1);
358 }
359
360 static void t_gen_cris_mstep(TCGv d, TCGv a, TCGv b, TCGv ccs)
361 {
362 TCGv t;
363
364 /*
365 * d <<= 1
366 * if (n)
367 * d += s;
368 */
369 t = tcg_temp_new();
370 tcg_gen_shli_tl(d, a, 1);
371 tcg_gen_shli_tl(t, ccs, 31 - 3);
372 tcg_gen_sari_tl(t, t, 31);
373 tcg_gen_and_tl(t, t, b);
374 tcg_gen_add_tl(d, d, t);
375 tcg_temp_free(t);
376 }
377
378 /* Extended arithmetics on CRIS. */
379 static inline void t_gen_add_flag(TCGv d, int flag)
380 {
381 TCGv c;
382
383 c = tcg_temp_new();
384 t_gen_mov_TN_preg(c, PR_CCS);
385 /* Propagate carry into d. */
386 tcg_gen_andi_tl(c, c, 1 << flag);
387 if (flag) {
388 tcg_gen_shri_tl(c, c, flag);
389 }
390 tcg_gen_add_tl(d, d, c);
391 tcg_temp_free(c);
392 }
393
394 static inline void t_gen_addx_carry(DisasContext *dc, TCGv d)
395 {
396 if (dc->flagx_known) {
397 if (dc->flags_x) {
398 TCGv c;
399
400 c = tcg_temp_new();
401 t_gen_mov_TN_preg(c, PR_CCS);
402 /* C flag is already at bit 0. */
403 tcg_gen_andi_tl(c, c, C_FLAG);
404 tcg_gen_add_tl(d, d, c);
405 tcg_temp_free(c);
406 }
407 } else {
408 TCGv x, c;
409
410 x = tcg_temp_new();
411 c = tcg_temp_new();
412 t_gen_mov_TN_preg(x, PR_CCS);
413 tcg_gen_mov_tl(c, x);
414
415 /* Propagate carry into d if X is set. Branch free. */
416 tcg_gen_andi_tl(c, c, C_FLAG);
417 tcg_gen_andi_tl(x, x, X_FLAG);
418 tcg_gen_shri_tl(x, x, 4);
419
420 tcg_gen_and_tl(x, x, c);
421 tcg_gen_add_tl(d, d, x);
422 tcg_temp_free(x);
423 tcg_temp_free(c);
424 }
425 }
426
427 static inline void t_gen_subx_carry(DisasContext *dc, TCGv d)
428 {
429 if (dc->flagx_known) {
430 if (dc->flags_x) {
431 TCGv c;
432
433 c = tcg_temp_new();
434 t_gen_mov_TN_preg(c, PR_CCS);
435 /* C flag is already at bit 0. */
436 tcg_gen_andi_tl(c, c, C_FLAG);
437 tcg_gen_sub_tl(d, d, c);
438 tcg_temp_free(c);
439 }
440 } else {
441 TCGv x, c;
442
443 x = tcg_temp_new();
444 c = tcg_temp_new();
445 t_gen_mov_TN_preg(x, PR_CCS);
446 tcg_gen_mov_tl(c, x);
447
448 /* Propagate carry into d if X is set. Branch free. */
449 tcg_gen_andi_tl(c, c, C_FLAG);
450 tcg_gen_andi_tl(x, x, X_FLAG);
451 tcg_gen_shri_tl(x, x, 4);
452
453 tcg_gen_and_tl(x, x, c);
454 tcg_gen_sub_tl(d, d, x);
455 tcg_temp_free(x);
456 tcg_temp_free(c);
457 }
458 }
459
460 /* Swap the two bytes within each half word of the s operand.
461 T0 = ((T0 << 8) & 0xff00ff00) | ((T0 >> 8) & 0x00ff00ff) */
462 static inline void t_gen_swapb(TCGv d, TCGv s)
463 {
464 TCGv t, org_s;
465
466 t = tcg_temp_new();
467 org_s = tcg_temp_new();
468
469 /* d and s may refer to the same object. */
470 tcg_gen_mov_tl(org_s, s);
471 tcg_gen_shli_tl(t, org_s, 8);
472 tcg_gen_andi_tl(d, t, 0xff00ff00);
473 tcg_gen_shri_tl(t, org_s, 8);
474 tcg_gen_andi_tl(t, t, 0x00ff00ff);
475 tcg_gen_or_tl(d, d, t);
476 tcg_temp_free(t);
477 tcg_temp_free(org_s);
478 }
479
480 /* Swap the halfwords of the s operand. */
481 static inline void t_gen_swapw(TCGv d, TCGv s)
482 {
483 TCGv t;
484 /* d and s refer the same object. */
485 t = tcg_temp_new();
486 tcg_gen_mov_tl(t, s);
487 tcg_gen_shli_tl(d, t, 16);
488 tcg_gen_shri_tl(t, t, 16);
489 tcg_gen_or_tl(d, d, t);
490 tcg_temp_free(t);
491 }
492
493 /* Reverse the within each byte.
494 T0 = (((T0 << 7) & 0x80808080) |
495 ((T0 << 5) & 0x40404040) |
496 ((T0 << 3) & 0x20202020) |
497 ((T0 << 1) & 0x10101010) |
498 ((T0 >> 1) & 0x08080808) |
499 ((T0 >> 3) & 0x04040404) |
500 ((T0 >> 5) & 0x02020202) |
501 ((T0 >> 7) & 0x01010101));
502 */
503 static inline void t_gen_swapr(TCGv d, TCGv s)
504 {
505 struct {
506 int shift; /* LSL when positive, LSR when negative. */
507 uint32_t mask;
508 } bitrev[] = {
509 {7, 0x80808080},
510 {5, 0x40404040},
511 {3, 0x20202020},
512 {1, 0x10101010},
513 {-1, 0x08080808},
514 {-3, 0x04040404},
515 {-5, 0x02020202},
516 {-7, 0x01010101}
517 };
518 int i;
519 TCGv t, org_s;
520
521 /* d and s refer the same object. */
522 t = tcg_temp_new();
523 org_s = tcg_temp_new();
524 tcg_gen_mov_tl(org_s, s);
525
526 tcg_gen_shli_tl(t, org_s, bitrev[0].shift);
527 tcg_gen_andi_tl(d, t, bitrev[0].mask);
528 for (i = 1; i < ARRAY_SIZE(bitrev); i++) {
529 if (bitrev[i].shift >= 0) {
530 tcg_gen_shli_tl(t, org_s, bitrev[i].shift);
531 } else {
532 tcg_gen_shri_tl(t, org_s, -bitrev[i].shift);
533 }
534 tcg_gen_andi_tl(t, t, bitrev[i].mask);
535 tcg_gen_or_tl(d, d, t);
536 }
537 tcg_temp_free(t);
538 tcg_temp_free(org_s);
539 }
540
541 static void t_gen_cc_jmp(TCGv pc_true, TCGv pc_false)
542 {
543 int l1;
544
545 l1 = gen_new_label();
546
547 /* Conditional jmp. */
548 tcg_gen_mov_tl(env_pc, pc_false);
549 tcg_gen_brcondi_tl(TCG_COND_EQ, env_btaken, 0, l1);
550 tcg_gen_mov_tl(env_pc, pc_true);
551 gen_set_label(l1);
552 }
553
554 static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest)
555 {
556 TranslationBlock *tb;
557 tb = dc->tb;
558 if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) {
559 tcg_gen_goto_tb(n);
560 tcg_gen_movi_tl(env_pc, dest);
561 tcg_gen_exit_tb((uintptr_t)tb + n);
562 } else {
563 tcg_gen_movi_tl(env_pc, dest);
564 tcg_gen_exit_tb(0);
565 }
566 }
567
568 static inline void cris_clear_x_flag(DisasContext *dc)
569 {
570 if (dc->flagx_known && dc->flags_x) {
571 dc->flags_uptodate = 0;
572 }
573
574 dc->flagx_known = 1;
575 dc->flags_x = 0;
576 }
577
578 static void cris_flush_cc_state(DisasContext *dc)
579 {
580 if (dc->cc_size_uptodate != dc->cc_size) {
581 tcg_gen_movi_tl(cc_size, dc->cc_size);
582 dc->cc_size_uptodate = dc->cc_size;
583 }
584 tcg_gen_movi_tl(cc_op, dc->cc_op);
585 tcg_gen_movi_tl(cc_mask, dc->cc_mask);
586 }
587
588 static void cris_evaluate_flags(DisasContext *dc)
589 {
590 if (dc->flags_uptodate) {
591 return;
592 }
593
594 cris_flush_cc_state(dc);
595
596 switch (dc->cc_op) {
597 case CC_OP_MCP:
598 gen_helper_evaluate_flags_mcp(cpu_PR[PR_CCS], cpu_env,
599 cpu_PR[PR_CCS], cc_src,
600 cc_dest, cc_result);
601 break;
602 case CC_OP_MULS:
603 gen_helper_evaluate_flags_muls(cpu_PR[PR_CCS], cpu_env,
604 cpu_PR[PR_CCS], cc_result,
605 cpu_PR[PR_MOF]);
606 break;
607 case CC_OP_MULU:
608 gen_helper_evaluate_flags_mulu(cpu_PR[PR_CCS], cpu_env,
609 cpu_PR[PR_CCS], cc_result,
610 cpu_PR[PR_MOF]);
611 break;
612 case CC_OP_MOVE:
613 case CC_OP_AND:
614 case CC_OP_OR:
615 case CC_OP_XOR:
616 case CC_OP_ASR:
617 case CC_OP_LSR:
618 case CC_OP_LSL:
619 switch (dc->cc_size) {
620 case 4:
621 gen_helper_evaluate_flags_move_4(cpu_PR[PR_CCS],
622 cpu_env, cpu_PR[PR_CCS], cc_result);
623 break;
624 case 2:
625 gen_helper_evaluate_flags_move_2(cpu_PR[PR_CCS],
626 cpu_env, cpu_PR[PR_CCS], cc_result);
627 break;
628 default:
629 gen_helper_evaluate_flags(cpu_env);
630 break;
631 }
632 break;
633 case CC_OP_FLAGS:
634 /* live. */
635 break;
636 case CC_OP_SUB:
637 case CC_OP_CMP:
638 if (dc->cc_size == 4) {
639 gen_helper_evaluate_flags_sub_4(cpu_PR[PR_CCS], cpu_env,
640 cpu_PR[PR_CCS], cc_src, cc_dest, cc_result);
641 } else {
642 gen_helper_evaluate_flags(cpu_env);
643 }
644
645 break;
646 default:
647 switch (dc->cc_size) {
648 case 4:
649 gen_helper_evaluate_flags_alu_4(cpu_PR[PR_CCS], cpu_env,
650 cpu_PR[PR_CCS], cc_src, cc_dest, cc_result);
651 break;
652 default:
653 gen_helper_evaluate_flags(cpu_env);
654 break;
655 }
656 break;
657 }
658
659 if (dc->flagx_known) {
660 if (dc->flags_x) {
661 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], X_FLAG);
662 } else if (dc->cc_op == CC_OP_FLAGS) {
663 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~X_FLAG);
664 }
665 }
666 dc->flags_uptodate = 1;
667 }
668
669 static void cris_cc_mask(DisasContext *dc, unsigned int mask)
670 {
671 uint32_t ovl;
672
673 if (!mask) {
674 dc->update_cc = 0;
675 return;
676 }
677
678 /* Check if we need to evaluate the condition codes due to
679 CC overlaying. */
680 ovl = (dc->cc_mask ^ mask) & ~mask;
681 if (ovl) {
682 /* TODO: optimize this case. It trigs all the time. */
683 cris_evaluate_flags(dc);
684 }
685 dc->cc_mask = mask;
686 dc->update_cc = 1;
687 }
688
689 static void cris_update_cc_op(DisasContext *dc, int op, int size)
690 {
691 dc->cc_op = op;
692 dc->cc_size = size;
693 dc->flags_uptodate = 0;
694 }
695
696 static inline void cris_update_cc_x(DisasContext *dc)
697 {
698 /* Save the x flag state at the time of the cc snapshot. */
699 if (dc->flagx_known) {
700 if (dc->cc_x_uptodate == (2 | dc->flags_x)) {
701 return;
702 }
703 tcg_gen_movi_tl(cc_x, dc->flags_x);
704 dc->cc_x_uptodate = 2 | dc->flags_x;
705 } else {
706 tcg_gen_andi_tl(cc_x, cpu_PR[PR_CCS], X_FLAG);
707 dc->cc_x_uptodate = 1;
708 }
709 }
710
711 /* Update cc prior to executing ALU op. Needs source operands untouched. */
712 static void cris_pre_alu_update_cc(DisasContext *dc, int op,
713 TCGv dst, TCGv src, int size)
714 {
715 if (dc->update_cc) {
716 cris_update_cc_op(dc, op, size);
717 tcg_gen_mov_tl(cc_src, src);
718
719 if (op != CC_OP_MOVE
720 && op != CC_OP_AND
721 && op != CC_OP_OR
722 && op != CC_OP_XOR
723 && op != CC_OP_ASR
724 && op != CC_OP_LSR
725 && op != CC_OP_LSL) {
726 tcg_gen_mov_tl(cc_dest, dst);
727 }
728
729 cris_update_cc_x(dc);
730 }
731 }
732
733 /* Update cc after executing ALU op. needs the result. */
734 static inline void cris_update_result(DisasContext *dc, TCGv res)
735 {
736 if (dc->update_cc) {
737 tcg_gen_mov_tl(cc_result, res);
738 }
739 }
740
741 /* Returns one if the write back stage should execute. */
742 static void cris_alu_op_exec(DisasContext *dc, int op,
743 TCGv dst, TCGv a, TCGv b, int size)
744 {
745 /* Emit the ALU insns. */
746 switch (op) {
747 case CC_OP_ADD:
748 tcg_gen_add_tl(dst, a, b);
749 /* Extended arithmetics. */
750 t_gen_addx_carry(dc, dst);
751 break;
752 case CC_OP_ADDC:
753 tcg_gen_add_tl(dst, a, b);
754 t_gen_add_flag(dst, 0); /* C_FLAG. */
755 break;
756 case CC_OP_MCP:
757 tcg_gen_add_tl(dst, a, b);
758 t_gen_add_flag(dst, 8); /* R_FLAG. */
759 break;
760 case CC_OP_SUB:
761 tcg_gen_sub_tl(dst, a, b);
762 /* Extended arithmetics. */
763 t_gen_subx_carry(dc, dst);
764 break;
765 case CC_OP_MOVE:
766 tcg_gen_mov_tl(dst, b);
767 break;
768 case CC_OP_OR:
769 tcg_gen_or_tl(dst, a, b);
770 break;
771 case CC_OP_AND:
772 tcg_gen_and_tl(dst, a, b);
773 break;
774 case CC_OP_XOR:
775 tcg_gen_xor_tl(dst, a, b);
776 break;
777 case CC_OP_LSL:
778 t_gen_lsl(dst, a, b);
779 break;
780 case CC_OP_LSR:
781 t_gen_lsr(dst, a, b);
782 break;
783 case CC_OP_ASR:
784 t_gen_asr(dst, a, b);
785 break;
786 case CC_OP_NEG:
787 tcg_gen_neg_tl(dst, b);
788 /* Extended arithmetics. */
789 t_gen_subx_carry(dc, dst);
790 break;
791 case CC_OP_LZ:
792 gen_helper_lz(dst, b);
793 break;
794 case CC_OP_MULS:
795 tcg_gen_muls2_tl(dst, cpu_PR[PR_MOF], a, b);
796 break;
797 case CC_OP_MULU:
798 tcg_gen_mulu2_tl(dst, cpu_PR[PR_MOF], a, b);
799 break;
800 case CC_OP_DSTEP:
801 t_gen_cris_dstep(dst, a, b);
802 break;
803 case CC_OP_MSTEP:
804 t_gen_cris_mstep(dst, a, b, cpu_PR[PR_CCS]);
805 break;
806 case CC_OP_BOUND:
807 {
808 int l1;
809 l1 = gen_new_label();
810 tcg_gen_mov_tl(dst, a);
811 tcg_gen_brcond_tl(TCG_COND_LEU, a, b, l1);
812 tcg_gen_mov_tl(dst, b);
813 gen_set_label(l1);
814 }
815 break;
816 case CC_OP_CMP:
817 tcg_gen_sub_tl(dst, a, b);
818 /* Extended arithmetics. */
819 t_gen_subx_carry(dc, dst);
820 break;
821 default:
822 qemu_log("illegal ALU op.\n");
823 BUG();
824 break;
825 }
826
827 if (size == 1) {
828 tcg_gen_andi_tl(dst, dst, 0xff);
829 } else if (size == 2) {
830 tcg_gen_andi_tl(dst, dst, 0xffff);
831 }
832 }
833
834 static void cris_alu(DisasContext *dc, int op,
835 TCGv d, TCGv op_a, TCGv op_b, int size)
836 {
837 TCGv tmp;
838 int writeback;
839
840 writeback = 1;
841
842 if (op == CC_OP_CMP) {
843 tmp = tcg_temp_new();
844 writeback = 0;
845 } else if (size == 4) {
846 tmp = d;
847 writeback = 0;
848 } else {
849 tmp = tcg_temp_new();
850 }
851
852
853 cris_pre_alu_update_cc(dc, op, op_a, op_b, size);
854 cris_alu_op_exec(dc, op, tmp, op_a, op_b, size);
855 cris_update_result(dc, tmp);
856
857 /* Writeback. */
858 if (writeback) {
859 if (size == 1) {
860 tcg_gen_andi_tl(d, d, ~0xff);
861 } else {
862 tcg_gen_andi_tl(d, d, ~0xffff);
863 }
864 tcg_gen_or_tl(d, d, tmp);
865 }
866 if (!TCGV_EQUAL(tmp, d)) {
867 tcg_temp_free(tmp);
868 }
869 }
870
871 static int arith_cc(DisasContext *dc)
872 {
873 if (dc->update_cc) {
874 switch (dc->cc_op) {
875 case CC_OP_ADDC: return 1;
876 case CC_OP_ADD: return 1;
877 case CC_OP_SUB: return 1;
878 case CC_OP_DSTEP: return 1;
879 case CC_OP_LSL: return 1;
880 case CC_OP_LSR: return 1;
881 case CC_OP_ASR: return 1;
882 case CC_OP_CMP: return 1;
883 case CC_OP_NEG: return 1;
884 case CC_OP_OR: return 1;
885 case CC_OP_AND: return 1;
886 case CC_OP_XOR: return 1;
887 case CC_OP_MULU: return 1;
888 case CC_OP_MULS: return 1;
889 default:
890 return 0;
891 }
892 }
893 return 0;
894 }
895
896 static void gen_tst_cc (DisasContext *dc, TCGv cc, int cond)
897 {
898 int arith_opt, move_opt;
899
900 /* TODO: optimize more condition codes. */
901
902 /*
903 * If the flags are live, we've gotta look into the bits of CCS.
904 * Otherwise, if we just did an arithmetic operation we try to
905 * evaluate the condition code faster.
906 *
907 * When this function is done, T0 should be non-zero if the condition
908 * code is true.
909 */
910 arith_opt = arith_cc(dc) && !dc->flags_uptodate;
911 move_opt = (dc->cc_op == CC_OP_MOVE);
912 switch (cond) {
913 case CC_EQ:
914 if ((arith_opt || move_opt)
915 && dc->cc_x_uptodate != (2 | X_FLAG)) {
916 tcg_gen_setcond_tl(TCG_COND_EQ, cc,
917 cc_result, tcg_const_tl(0));
918 } else {
919 cris_evaluate_flags(dc);
920 tcg_gen_andi_tl(cc,
921 cpu_PR[PR_CCS], Z_FLAG);
922 }
923 break;
924 case CC_NE:
925 if ((arith_opt || move_opt)
926 && dc->cc_x_uptodate != (2 | X_FLAG)) {
927 tcg_gen_mov_tl(cc, cc_result);
928 } else {
929 cris_evaluate_flags(dc);
930 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
931 Z_FLAG);
932 tcg_gen_andi_tl(cc, cc, Z_FLAG);
933 }
934 break;
935 case CC_CS:
936 cris_evaluate_flags(dc);
937 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], C_FLAG);
938 break;
939 case CC_CC:
940 cris_evaluate_flags(dc);
941 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], C_FLAG);
942 tcg_gen_andi_tl(cc, cc, C_FLAG);
943 break;
944 case CC_VS:
945 cris_evaluate_flags(dc);
946 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], V_FLAG);
947 break;
948 case CC_VC:
949 cris_evaluate_flags(dc);
950 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
951 V_FLAG);
952 tcg_gen_andi_tl(cc, cc, V_FLAG);
953 break;
954 case CC_PL:
955 if (arith_opt || move_opt) {
956 int bits = 31;
957
958 if (dc->cc_size == 1) {
959 bits = 7;
960 } else if (dc->cc_size == 2) {
961 bits = 15;
962 }
963
964 tcg_gen_shri_tl(cc, cc_result, bits);
965 tcg_gen_xori_tl(cc, cc, 1);
966 } else {
967 cris_evaluate_flags(dc);
968 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
969 N_FLAG);
970 tcg_gen_andi_tl(cc, cc, N_FLAG);
971 }
972 break;
973 case CC_MI:
974 if (arith_opt || move_opt) {
975 int bits = 31;
976
977 if (dc->cc_size == 1) {
978 bits = 7;
979 } else if (dc->cc_size == 2) {
980 bits = 15;
981 }
982
983 tcg_gen_shri_tl(cc, cc_result, bits);
984 tcg_gen_andi_tl(cc, cc, 1);
985 } else {
986 cris_evaluate_flags(dc);
987 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS],
988 N_FLAG);
989 }
990 break;
991 case CC_LS:
992 cris_evaluate_flags(dc);
993 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS],
994 C_FLAG | Z_FLAG);
995 break;
996 case CC_HI:
997 cris_evaluate_flags(dc);
998 {
999 TCGv tmp;
1000
1001 tmp = tcg_temp_new();
1002 tcg_gen_xori_tl(tmp, cpu_PR[PR_CCS],
1003 C_FLAG | Z_FLAG);
1004 /* Overlay the C flag on top of the Z. */
1005 tcg_gen_shli_tl(cc, tmp, 2);
1006 tcg_gen_and_tl(cc, tmp, cc);
1007 tcg_gen_andi_tl(cc, cc, Z_FLAG);
1008
1009 tcg_temp_free(tmp);
1010 }
1011 break;
1012 case CC_GE:
1013 cris_evaluate_flags(dc);
1014 /* Overlay the V flag on top of the N. */
1015 tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2);
1016 tcg_gen_xor_tl(cc,
1017 cpu_PR[PR_CCS], cc);
1018 tcg_gen_andi_tl(cc, cc, N_FLAG);
1019 tcg_gen_xori_tl(cc, cc, N_FLAG);
1020 break;
1021 case CC_LT:
1022 cris_evaluate_flags(dc);
1023 /* Overlay the V flag on top of the N. */
1024 tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2);
1025 tcg_gen_xor_tl(cc,
1026 cpu_PR[PR_CCS], cc);
1027 tcg_gen_andi_tl(cc, cc, N_FLAG);
1028 break;
1029 case CC_GT:
1030 cris_evaluate_flags(dc);
1031 {
1032 TCGv n, z;
1033
1034 n = tcg_temp_new();
1035 z = tcg_temp_new();
1036
1037 /* To avoid a shift we overlay everything on
1038 the V flag. */
1039 tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2);
1040 tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1);
1041 /* invert Z. */
1042 tcg_gen_xori_tl(z, z, 2);
1043
1044 tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]);
1045 tcg_gen_xori_tl(n, n, 2);
1046 tcg_gen_and_tl(cc, z, n);
1047 tcg_gen_andi_tl(cc, cc, 2);
1048
1049 tcg_temp_free(n);
1050 tcg_temp_free(z);
1051 }
1052 break;
1053 case CC_LE:
1054 cris_evaluate_flags(dc);
1055 {
1056 TCGv n, z;
1057
1058 n = tcg_temp_new();
1059 z = tcg_temp_new();
1060
1061 /* To avoid a shift we overlay everything on
1062 the V flag. */
1063 tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2);
1064 tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1);
1065
1066 tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]);
1067 tcg_gen_or_tl(cc, z, n);
1068 tcg_gen_andi_tl(cc, cc, 2);
1069
1070 tcg_temp_free(n);
1071 tcg_temp_free(z);
1072 }
1073 break;
1074 case CC_P:
1075 cris_evaluate_flags(dc);
1076 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], P_FLAG);
1077 break;
1078 case CC_A:
1079 tcg_gen_movi_tl(cc, 1);
1080 break;
1081 default:
1082 BUG();
1083 break;
1084 };
1085 }
1086
1087 static void cris_store_direct_jmp(DisasContext *dc)
1088 {
1089 /* Store the direct jmp state into the cpu-state. */
1090 if (dc->jmp == JMP_DIRECT || dc->jmp == JMP_DIRECT_CC) {
1091 if (dc->jmp == JMP_DIRECT) {
1092 tcg_gen_movi_tl(env_btaken, 1);
1093 }
1094 tcg_gen_movi_tl(env_btarget, dc->jmp_pc);
1095 dc->jmp = JMP_INDIRECT;
1096 }
1097 }
1098
1099 static void cris_prepare_cc_branch (DisasContext *dc,
1100 int offset, int cond)
1101 {
1102 /* This helps us re-schedule the micro-code to insns in delay-slots
1103 before the actual jump. */
1104 dc->delayed_branch = 2;
1105 dc->jmp = JMP_DIRECT_CC;
1106 dc->jmp_pc = dc->pc + offset;
1107
1108 gen_tst_cc(dc, env_btaken, cond);
1109 tcg_gen_movi_tl(env_btarget, dc->jmp_pc);
1110 }
1111
1112
1113 /* jumps, when the dest is in a live reg for example. Direct should be set
1114 when the dest addr is constant to allow tb chaining. */
1115 static inline void cris_prepare_jmp (DisasContext *dc, unsigned int type)
1116 {
1117 /* This helps us re-schedule the micro-code to insns in delay-slots
1118 before the actual jump. */
1119 dc->delayed_branch = 2;
1120 dc->jmp = type;
1121 if (type == JMP_INDIRECT) {
1122 tcg_gen_movi_tl(env_btaken, 1);
1123 }
1124 }
1125
1126 static void gen_load64(DisasContext *dc, TCGv_i64 dst, TCGv addr)
1127 {
1128 int mem_index = cpu_mmu_index(dc->env);
1129
1130 /* If we get a fault on a delayslot we must keep the jmp state in
1131 the cpu-state to be able to re-execute the jmp. */
1132 if (dc->delayed_branch == 1) {
1133 cris_store_direct_jmp(dc);
1134 }
1135
1136 tcg_gen_qemu_ld64(dst, addr, mem_index);
1137 }
1138
1139 static void gen_load(DisasContext *dc, TCGv dst, TCGv addr,
1140 unsigned int size, int sign)
1141 {
1142 int mem_index = cpu_mmu_index(dc->env);
1143
1144 /* If we get a fault on a delayslot we must keep the jmp state in
1145 the cpu-state to be able to re-execute the jmp. */
1146 if (dc->delayed_branch == 1) {
1147 cris_store_direct_jmp(dc);
1148 }
1149
1150 if (size == 1) {
1151 if (sign) {
1152 tcg_gen_qemu_ld8s(dst, addr, mem_index);
1153 } else {
1154 tcg_gen_qemu_ld8u(dst, addr, mem_index);
1155 }
1156 } else if (size == 2) {
1157 if (sign) {
1158 tcg_gen_qemu_ld16s(dst, addr, mem_index);
1159 } else {
1160 tcg_gen_qemu_ld16u(dst, addr, mem_index);
1161 }
1162 } else if (size == 4) {
1163 tcg_gen_qemu_ld32u(dst, addr, mem_index);
1164 } else {
1165 abort();
1166 }
1167 }
1168
1169 static void gen_store (DisasContext *dc, TCGv addr, TCGv val,
1170 unsigned int size)
1171 {
1172 int mem_index = cpu_mmu_index(dc->env);
1173
1174 /* If we get a fault on a delayslot we must keep the jmp state in
1175 the cpu-state to be able to re-execute the jmp. */
1176 if (dc->delayed_branch == 1) {
1177 cris_store_direct_jmp(dc);
1178 }
1179
1180
1181 /* Conditional writes. We only support the kind were X and P are known
1182 at translation time. */
1183 if (dc->flagx_known && dc->flags_x && (dc->tb_flags & P_FLAG)) {
1184 dc->postinc = 0;
1185 cris_evaluate_flags(dc);
1186 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], C_FLAG);
1187 return;
1188 }
1189
1190 if (size == 1) {
1191 tcg_gen_qemu_st8(val, addr, mem_index);
1192 } else if (size == 2) {
1193 tcg_gen_qemu_st16(val, addr, mem_index);
1194 } else {
1195 tcg_gen_qemu_st32(val, addr, mem_index);
1196 }
1197
1198 if (dc->flagx_known && dc->flags_x) {
1199 cris_evaluate_flags(dc);
1200 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~C_FLAG);
1201 }
1202 }
1203
1204 static inline void t_gen_sext(TCGv d, TCGv s, int size)
1205 {
1206 if (size == 1) {
1207 tcg_gen_ext8s_i32(d, s);
1208 } else if (size == 2) {
1209 tcg_gen_ext16s_i32(d, s);
1210 } else if (!TCGV_EQUAL(d, s)) {
1211 tcg_gen_mov_tl(d, s);
1212 }
1213 }
1214
1215 static inline void t_gen_zext(TCGv d, TCGv s, int size)
1216 {
1217 if (size == 1) {
1218 tcg_gen_ext8u_i32(d, s);
1219 } else if (size == 2) {
1220 tcg_gen_ext16u_i32(d, s);
1221 } else if (!TCGV_EQUAL(d, s)) {
1222 tcg_gen_mov_tl(d, s);
1223 }
1224 }
1225
1226 #if DISAS_CRIS
1227 static char memsize_char(int size)
1228 {
1229 switch (size) {
1230 case 1: return 'b'; break;
1231 case 2: return 'w'; break;
1232 case 4: return 'd'; break;
1233 default:
1234 return 'x';
1235 break;
1236 }
1237 }
1238 #endif
1239
1240 static inline unsigned int memsize_z(DisasContext *dc)
1241 {
1242 return dc->zsize + 1;
1243 }
1244
1245 static inline unsigned int memsize_zz(DisasContext *dc)
1246 {
1247 switch (dc->zzsize) {
1248 case 0: return 1;
1249 case 1: return 2;
1250 default:
1251 return 4;
1252 }
1253 }
1254
1255 static inline void do_postinc (DisasContext *dc, int size)
1256 {
1257 if (dc->postinc) {
1258 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], size);
1259 }
1260 }
1261
1262 static inline void dec_prep_move_r(DisasContext *dc, int rs, int rd,
1263 int size, int s_ext, TCGv dst)
1264 {
1265 if (s_ext) {
1266 t_gen_sext(dst, cpu_R[rs], size);
1267 } else {
1268 t_gen_zext(dst, cpu_R[rs], size);
1269 }
1270 }
1271
1272 /* Prepare T0 and T1 for a register alu operation.
1273 s_ext decides if the operand1 should be sign-extended or zero-extended when
1274 needed. */
1275 static void dec_prep_alu_r(DisasContext *dc, int rs, int rd,
1276 int size, int s_ext, TCGv dst, TCGv src)
1277 {
1278 dec_prep_move_r(dc, rs, rd, size, s_ext, src);
1279
1280 if (s_ext) {
1281 t_gen_sext(dst, cpu_R[rd], size);
1282 } else {
1283 t_gen_zext(dst, cpu_R[rd], size);
1284 }
1285 }
1286
1287 static int dec_prep_move_m(CPUCRISState *env, DisasContext *dc,
1288 int s_ext, int memsize, TCGv dst)
1289 {
1290 unsigned int rs;
1291 uint32_t imm;
1292 int is_imm;
1293 int insn_len = 2;
1294
1295 rs = dc->op1;
1296 is_imm = rs == 15 && dc->postinc;
1297
1298 /* Load [$rs] onto T1. */
1299 if (is_imm) {
1300 insn_len = 2 + memsize;
1301 if (memsize == 1) {
1302 insn_len++;
1303 }
1304
1305 imm = cris_fetch(env, dc, dc->pc + 2, memsize, s_ext);
1306 tcg_gen_movi_tl(dst, imm);
1307 dc->postinc = 0;
1308 } else {
1309 cris_flush_cc_state(dc);
1310 gen_load(dc, dst, cpu_R[rs], memsize, 0);
1311 if (s_ext) {
1312 t_gen_sext(dst, dst, memsize);
1313 } else {
1314 t_gen_zext(dst, dst, memsize);
1315 }
1316 }
1317 return insn_len;
1318 }
1319
1320 /* Prepare T0 and T1 for a memory + alu operation.
1321 s_ext decides if the operand1 should be sign-extended or zero-extended when
1322 needed. */
1323 static int dec_prep_alu_m(CPUCRISState *env, DisasContext *dc,
1324 int s_ext, int memsize, TCGv dst, TCGv src)
1325 {
1326 int insn_len;
1327
1328 insn_len = dec_prep_move_m(env, dc, s_ext, memsize, src);
1329 tcg_gen_mov_tl(dst, cpu_R[dc->op2]);
1330 return insn_len;
1331 }
1332
1333 #if DISAS_CRIS
1334 static const char *cc_name(int cc)
1335 {
1336 static const char *cc_names[16] = {
1337 "cc", "cs", "ne", "eq", "vc", "vs", "pl", "mi",
1338 "ls", "hi", "ge", "lt", "gt", "le", "a", "p"
1339 };
1340 assert(cc < 16);
1341 return cc_names[cc];
1342 }
1343 #endif
1344
1345 /* Start of insn decoders. */
1346
1347 static int dec_bccq(CPUCRISState *env, DisasContext *dc)
1348 {
1349 int32_t offset;
1350 int sign;
1351 uint32_t cond = dc->op2;
1352
1353 offset = EXTRACT_FIELD(dc->ir, 1, 7);
1354 sign = EXTRACT_FIELD(dc->ir, 0, 0);
1355
1356 offset *= 2;
1357 offset |= sign << 8;
1358 offset = sign_extend(offset, 8);
1359
1360 LOG_DIS("b%s %x\n", cc_name(cond), dc->pc + offset);
1361
1362 /* op2 holds the condition-code. */
1363 cris_cc_mask(dc, 0);
1364 cris_prepare_cc_branch(dc, offset, cond);
1365 return 2;
1366 }
1367 static int dec_addoq(CPUCRISState *env, DisasContext *dc)
1368 {
1369 int32_t imm;
1370
1371 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 7);
1372 imm = sign_extend(dc->op1, 7);
1373
1374 LOG_DIS("addoq %d, $r%u\n", imm, dc->op2);
1375 cris_cc_mask(dc, 0);
1376 /* Fetch register operand, */
1377 tcg_gen_addi_tl(cpu_R[R_ACR], cpu_R[dc->op2], imm);
1378
1379 return 2;
1380 }
1381 static int dec_addq(CPUCRISState *env, DisasContext *dc)
1382 {
1383 LOG_DIS("addq %u, $r%u\n", dc->op1, dc->op2);
1384
1385 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1386
1387 cris_cc_mask(dc, CC_MASK_NZVC);
1388
1389 cris_alu(dc, CC_OP_ADD,
1390 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
1391 return 2;
1392 }
1393 static int dec_moveq(CPUCRISState *env, DisasContext *dc)
1394 {
1395 uint32_t imm;
1396
1397 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1398 imm = sign_extend(dc->op1, 5);
1399 LOG_DIS("moveq %d, $r%u\n", imm, dc->op2);
1400
1401 tcg_gen_movi_tl(cpu_R[dc->op2], imm);
1402 return 2;
1403 }
1404 static int dec_subq(CPUCRISState *env, DisasContext *dc)
1405 {
1406 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1407
1408 LOG_DIS("subq %u, $r%u\n", dc->op1, dc->op2);
1409
1410 cris_cc_mask(dc, CC_MASK_NZVC);
1411 cris_alu(dc, CC_OP_SUB,
1412 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
1413 return 2;
1414 }
1415 static int dec_cmpq(CPUCRISState *env, DisasContext *dc)
1416 {
1417 uint32_t imm;
1418 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1419 imm = sign_extend(dc->op1, 5);
1420
1421 LOG_DIS("cmpq %d, $r%d\n", imm, dc->op2);
1422 cris_cc_mask(dc, CC_MASK_NZVC);
1423
1424 cris_alu(dc, CC_OP_CMP,
1425 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
1426 return 2;
1427 }
1428 static int dec_andq(CPUCRISState *env, DisasContext *dc)
1429 {
1430 uint32_t imm;
1431 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1432 imm = sign_extend(dc->op1, 5);
1433
1434 LOG_DIS("andq %d, $r%d\n", imm, dc->op2);
1435 cris_cc_mask(dc, CC_MASK_NZ);
1436
1437 cris_alu(dc, CC_OP_AND,
1438 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
1439 return 2;
1440 }
1441 static int dec_orq(CPUCRISState *env, DisasContext *dc)
1442 {
1443 uint32_t imm;
1444 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1445 imm = sign_extend(dc->op1, 5);
1446 LOG_DIS("orq %d, $r%d\n", imm, dc->op2);
1447 cris_cc_mask(dc, CC_MASK_NZ);
1448
1449 cris_alu(dc, CC_OP_OR,
1450 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
1451 return 2;
1452 }
1453 static int dec_btstq(CPUCRISState *env, DisasContext *dc)
1454 {
1455 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1456 LOG_DIS("btstq %u, $r%d\n", dc->op1, dc->op2);
1457
1458 cris_cc_mask(dc, CC_MASK_NZ);
1459 cris_evaluate_flags(dc);
1460 gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->op2],
1461 tcg_const_tl(dc->op1), cpu_PR[PR_CCS]);
1462 cris_alu(dc, CC_OP_MOVE,
1463 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op2], 4);
1464 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
1465 dc->flags_uptodate = 1;
1466 return 2;
1467 }
1468 static int dec_asrq(CPUCRISState *env, DisasContext *dc)
1469 {
1470 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1471 LOG_DIS("asrq %u, $r%d\n", dc->op1, dc->op2);
1472 cris_cc_mask(dc, CC_MASK_NZ);
1473
1474 tcg_gen_sari_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1);
1475 cris_alu(dc, CC_OP_MOVE,
1476 cpu_R[dc->op2],
1477 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1478 return 2;
1479 }
1480 static int dec_lslq(CPUCRISState *env, DisasContext *dc)
1481 {
1482 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1483 LOG_DIS("lslq %u, $r%d\n", dc->op1, dc->op2);
1484
1485 cris_cc_mask(dc, CC_MASK_NZ);
1486
1487 tcg_gen_shli_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1);
1488
1489 cris_alu(dc, CC_OP_MOVE,
1490 cpu_R[dc->op2],
1491 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1492 return 2;
1493 }
1494 static int dec_lsrq(CPUCRISState *env, DisasContext *dc)
1495 {
1496 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1497 LOG_DIS("lsrq %u, $r%d\n", dc->op1, dc->op2);
1498
1499 cris_cc_mask(dc, CC_MASK_NZ);
1500
1501 tcg_gen_shri_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1);
1502 cris_alu(dc, CC_OP_MOVE,
1503 cpu_R[dc->op2],
1504 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1505 return 2;
1506 }
1507
1508 static int dec_move_r(CPUCRISState *env, DisasContext *dc)
1509 {
1510 int size = memsize_zz(dc);
1511
1512 LOG_DIS("move.%c $r%u, $r%u\n",
1513 memsize_char(size), dc->op1, dc->op2);
1514
1515 cris_cc_mask(dc, CC_MASK_NZ);
1516 if (size == 4) {
1517 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, cpu_R[dc->op2]);
1518 cris_cc_mask(dc, CC_MASK_NZ);
1519 cris_update_cc_op(dc, CC_OP_MOVE, 4);
1520 cris_update_cc_x(dc);
1521 cris_update_result(dc, cpu_R[dc->op2]);
1522 } else {
1523 TCGv t0;
1524
1525 t0 = tcg_temp_new();
1526 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0);
1527 cris_alu(dc, CC_OP_MOVE,
1528 cpu_R[dc->op2],
1529 cpu_R[dc->op2], t0, size);
1530 tcg_temp_free(t0);
1531 }
1532 return 2;
1533 }
1534
1535 static int dec_scc_r(CPUCRISState *env, DisasContext *dc)
1536 {
1537 int cond = dc->op2;
1538
1539 LOG_DIS("s%s $r%u\n",
1540 cc_name(cond), dc->op1);
1541
1542 if (cond != CC_A) {
1543 int l1;
1544
1545 gen_tst_cc(dc, cpu_R[dc->op1], cond);
1546 l1 = gen_new_label();
1547 tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_R[dc->op1], 0, l1);
1548 tcg_gen_movi_tl(cpu_R[dc->op1], 1);
1549 gen_set_label(l1);
1550 } else {
1551 tcg_gen_movi_tl(cpu_R[dc->op1], 1);
1552 }
1553
1554 cris_cc_mask(dc, 0);
1555 return 2;
1556 }
1557
1558 static inline void cris_alu_alloc_temps(DisasContext *dc, int size, TCGv *t)
1559 {
1560 if (size == 4) {
1561 t[0] = cpu_R[dc->op2];
1562 t[1] = cpu_R[dc->op1];
1563 } else {
1564 t[0] = tcg_temp_new();
1565 t[1] = tcg_temp_new();
1566 }
1567 }
1568
1569 static inline void cris_alu_free_temps(DisasContext *dc, int size, TCGv *t)
1570 {
1571 if (size != 4) {
1572 tcg_temp_free(t[0]);
1573 tcg_temp_free(t[1]);
1574 }
1575 }
1576
1577 static int dec_and_r(CPUCRISState *env, DisasContext *dc)
1578 {
1579 TCGv t[2];
1580 int size = memsize_zz(dc);
1581
1582 LOG_DIS("and.%c $r%u, $r%u\n",
1583 memsize_char(size), dc->op1, dc->op2);
1584
1585 cris_cc_mask(dc, CC_MASK_NZ);
1586
1587 cris_alu_alloc_temps(dc, size, t);
1588 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1589 cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], size);
1590 cris_alu_free_temps(dc, size, t);
1591 return 2;
1592 }
1593
1594 static int dec_lz_r(CPUCRISState *env, DisasContext *dc)
1595 {
1596 TCGv t0;
1597 LOG_DIS("lz $r%u, $r%u\n",
1598 dc->op1, dc->op2);
1599 cris_cc_mask(dc, CC_MASK_NZ);
1600 t0 = tcg_temp_new();
1601 dec_prep_alu_r(dc, dc->op1, dc->op2, 4, 0, cpu_R[dc->op2], t0);
1602 cris_alu(dc, CC_OP_LZ, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1603 tcg_temp_free(t0);
1604 return 2;
1605 }
1606
1607 static int dec_lsl_r(CPUCRISState *env, DisasContext *dc)
1608 {
1609 TCGv t[2];
1610 int size = memsize_zz(dc);
1611
1612 LOG_DIS("lsl.%c $r%u, $r%u\n",
1613 memsize_char(size), dc->op1, dc->op2);
1614
1615 cris_cc_mask(dc, CC_MASK_NZ);
1616 cris_alu_alloc_temps(dc, size, t);
1617 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1618 tcg_gen_andi_tl(t[1], t[1], 63);
1619 cris_alu(dc, CC_OP_LSL, cpu_R[dc->op2], t[0], t[1], size);
1620 cris_alu_alloc_temps(dc, size, t);
1621 return 2;
1622 }
1623
1624 static int dec_lsr_r(CPUCRISState *env, DisasContext *dc)
1625 {
1626 TCGv t[2];
1627 int size = memsize_zz(dc);
1628
1629 LOG_DIS("lsr.%c $r%u, $r%u\n",
1630 memsize_char(size), dc->op1, dc->op2);
1631
1632 cris_cc_mask(dc, CC_MASK_NZ);
1633 cris_alu_alloc_temps(dc, size, t);
1634 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1635 tcg_gen_andi_tl(t[1], t[1], 63);
1636 cris_alu(dc, CC_OP_LSR, cpu_R[dc->op2], t[0], t[1], size);
1637 cris_alu_free_temps(dc, size, t);
1638 return 2;
1639 }
1640
1641 static int dec_asr_r(CPUCRISState *env, DisasContext *dc)
1642 {
1643 TCGv t[2];
1644 int size = memsize_zz(dc);
1645
1646 LOG_DIS("asr.%c $r%u, $r%u\n",
1647 memsize_char(size), dc->op1, dc->op2);
1648
1649 cris_cc_mask(dc, CC_MASK_NZ);
1650 cris_alu_alloc_temps(dc, size, t);
1651 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]);
1652 tcg_gen_andi_tl(t[1], t[1], 63);
1653 cris_alu(dc, CC_OP_ASR, cpu_R[dc->op2], t[0], t[1], size);
1654 cris_alu_free_temps(dc, size, t);
1655 return 2;
1656 }
1657
1658 static int dec_muls_r(CPUCRISState *env, DisasContext *dc)
1659 {
1660 TCGv t[2];
1661 int size = memsize_zz(dc);
1662
1663 LOG_DIS("muls.%c $r%u, $r%u\n",
1664 memsize_char(size), dc->op1, dc->op2);
1665 cris_cc_mask(dc, CC_MASK_NZV);
1666 cris_alu_alloc_temps(dc, size, t);
1667 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]);
1668
1669 cris_alu(dc, CC_OP_MULS, cpu_R[dc->op2], t[0], t[1], 4);
1670 cris_alu_free_temps(dc, size, t);
1671 return 2;
1672 }
1673
1674 static int dec_mulu_r(CPUCRISState *env, DisasContext *dc)
1675 {
1676 TCGv t[2];
1677 int size = memsize_zz(dc);
1678
1679 LOG_DIS("mulu.%c $r%u, $r%u\n",
1680 memsize_char(size), dc->op1, dc->op2);
1681 cris_cc_mask(dc, CC_MASK_NZV);
1682 cris_alu_alloc_temps(dc, size, t);
1683 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1684
1685 cris_alu(dc, CC_OP_MULU, cpu_R[dc->op2], t[0], t[1], 4);
1686 cris_alu_alloc_temps(dc, size, t);
1687 return 2;
1688 }
1689
1690
1691 static int dec_dstep_r(CPUCRISState *env, DisasContext *dc)
1692 {
1693 LOG_DIS("dstep $r%u, $r%u\n", dc->op1, dc->op2);
1694 cris_cc_mask(dc, CC_MASK_NZ);
1695 cris_alu(dc, CC_OP_DSTEP,
1696 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4);
1697 return 2;
1698 }
1699
1700 static int dec_xor_r(CPUCRISState *env, DisasContext *dc)
1701 {
1702 TCGv t[2];
1703 int size = memsize_zz(dc);
1704 LOG_DIS("xor.%c $r%u, $r%u\n",
1705 memsize_char(size), dc->op1, dc->op2);
1706 BUG_ON(size != 4); /* xor is dword. */
1707 cris_cc_mask(dc, CC_MASK_NZ);
1708 cris_alu_alloc_temps(dc, size, t);
1709 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1710
1711 cris_alu(dc, CC_OP_XOR, cpu_R[dc->op2], t[0], t[1], 4);
1712 cris_alu_free_temps(dc, size, t);
1713 return 2;
1714 }
1715
1716 static int dec_bound_r(CPUCRISState *env, DisasContext *dc)
1717 {
1718 TCGv l0;
1719 int size = memsize_zz(dc);
1720 LOG_DIS("bound.%c $r%u, $r%u\n",
1721 memsize_char(size), dc->op1, dc->op2);
1722 cris_cc_mask(dc, CC_MASK_NZ);
1723 l0 = tcg_temp_local_new();
1724 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, l0);
1725 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], cpu_R[dc->op2], l0, 4);
1726 tcg_temp_free(l0);
1727 return 2;
1728 }
1729
1730 static int dec_cmp_r(CPUCRISState *env, DisasContext *dc)
1731 {
1732 TCGv t[2];
1733 int size = memsize_zz(dc);
1734 LOG_DIS("cmp.%c $r%u, $r%u\n",
1735 memsize_char(size), dc->op1, dc->op2);
1736 cris_cc_mask(dc, CC_MASK_NZVC);
1737 cris_alu_alloc_temps(dc, size, t);
1738 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1739
1740 cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], t[0], t[1], size);
1741 cris_alu_free_temps(dc, size, t);
1742 return 2;
1743 }
1744
1745 static int dec_abs_r(CPUCRISState *env, DisasContext *dc)
1746 {
1747 TCGv t0;
1748
1749 LOG_DIS("abs $r%u, $r%u\n",
1750 dc->op1, dc->op2);
1751 cris_cc_mask(dc, CC_MASK_NZ);
1752
1753 t0 = tcg_temp_new();
1754 tcg_gen_sari_tl(t0, cpu_R[dc->op1], 31);
1755 tcg_gen_xor_tl(cpu_R[dc->op2], cpu_R[dc->op1], t0);
1756 tcg_gen_sub_tl(cpu_R[dc->op2], cpu_R[dc->op2], t0);
1757 tcg_temp_free(t0);
1758
1759 cris_alu(dc, CC_OP_MOVE,
1760 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op2], 4);
1761 return 2;
1762 }
1763
1764 static int dec_add_r(CPUCRISState *env, DisasContext *dc)
1765 {
1766 TCGv t[2];
1767 int size = memsize_zz(dc);
1768 LOG_DIS("add.%c $r%u, $r%u\n",
1769 memsize_char(size), dc->op1, dc->op2);
1770 cris_cc_mask(dc, CC_MASK_NZVC);
1771 cris_alu_alloc_temps(dc, size, t);
1772 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1773
1774 cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], t[0], t[1], size);
1775 cris_alu_free_temps(dc, size, t);
1776 return 2;
1777 }
1778
1779 static int dec_addc_r(CPUCRISState *env, DisasContext *dc)
1780 {
1781 LOG_DIS("addc $r%u, $r%u\n",
1782 dc->op1, dc->op2);
1783 cris_evaluate_flags(dc);
1784 /* Set for this insn. */
1785 dc->flagx_known = 1;
1786 dc->flags_x = X_FLAG;
1787
1788 cris_cc_mask(dc, CC_MASK_NZVC);
1789 cris_alu(dc, CC_OP_ADDC,
1790 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4);
1791 return 2;
1792 }
1793
1794 static int dec_mcp_r(CPUCRISState *env, DisasContext *dc)
1795 {
1796 LOG_DIS("mcp $p%u, $r%u\n",
1797 dc->op2, dc->op1);
1798 cris_evaluate_flags(dc);
1799 cris_cc_mask(dc, CC_MASK_RNZV);
1800 cris_alu(dc, CC_OP_MCP,
1801 cpu_R[dc->op1], cpu_R[dc->op1], cpu_PR[dc->op2], 4);
1802 return 2;
1803 }
1804
1805 #if DISAS_CRIS
1806 static char * swapmode_name(int mode, char *modename) {
1807 int i = 0;
1808 if (mode & 8) {
1809 modename[i++] = 'n';
1810 }
1811 if (mode & 4) {
1812 modename[i++] = 'w';
1813 }
1814 if (mode & 2) {
1815 modename[i++] = 'b';
1816 }
1817 if (mode & 1) {
1818 modename[i++] = 'r';
1819 }
1820 modename[i++] = 0;
1821 return modename;
1822 }
1823 #endif
1824
1825 static int dec_swap_r(CPUCRISState *env, DisasContext *dc)
1826 {
1827 TCGv t0;
1828 #if DISAS_CRIS
1829 char modename[4];
1830 #endif
1831 LOG_DIS("swap%s $r%u\n",
1832 swapmode_name(dc->op2, modename), dc->op1);
1833
1834 cris_cc_mask(dc, CC_MASK_NZ);
1835 t0 = tcg_temp_new();
1836 t_gen_mov_TN_reg(t0, dc->op1);
1837 if (dc->op2 & 8) {
1838 tcg_gen_not_tl(t0, t0);
1839 }
1840 if (dc->op2 & 4) {
1841 t_gen_swapw(t0, t0);
1842 }
1843 if (dc->op2 & 2) {
1844 t_gen_swapb(t0, t0);
1845 }
1846 if (dc->op2 & 1) {
1847 t_gen_swapr(t0, t0);
1848 }
1849 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op1], cpu_R[dc->op1], t0, 4);
1850 tcg_temp_free(t0);
1851 return 2;
1852 }
1853
1854 static int dec_or_r(CPUCRISState *env, DisasContext *dc)
1855 {
1856 TCGv t[2];
1857 int size = memsize_zz(dc);
1858 LOG_DIS("or.%c $r%u, $r%u\n",
1859 memsize_char(size), dc->op1, dc->op2);
1860 cris_cc_mask(dc, CC_MASK_NZ);
1861 cris_alu_alloc_temps(dc, size, t);
1862 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1863 cris_alu(dc, CC_OP_OR, cpu_R[dc->op2], t[0], t[1], size);
1864 cris_alu_free_temps(dc, size, t);
1865 return 2;
1866 }
1867
1868 static int dec_addi_r(CPUCRISState *env, DisasContext *dc)
1869 {
1870 TCGv t0;
1871 LOG_DIS("addi.%c $r%u, $r%u\n",
1872 memsize_char(memsize_zz(dc)), dc->op2, dc->op1);
1873 cris_cc_mask(dc, 0);
1874 t0 = tcg_temp_new();
1875 tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize));
1876 tcg_gen_add_tl(cpu_R[dc->op1], cpu_R[dc->op1], t0);
1877 tcg_temp_free(t0);
1878 return 2;
1879 }
1880
1881 static int dec_addi_acr(CPUCRISState *env, DisasContext *dc)
1882 {
1883 TCGv t0;
1884 LOG_DIS("addi.%c $r%u, $r%u, $acr\n",
1885 memsize_char(memsize_zz(dc)), dc->op2, dc->op1);
1886 cris_cc_mask(dc, 0);
1887 t0 = tcg_temp_new();
1888 tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize));
1889 tcg_gen_add_tl(cpu_R[R_ACR], cpu_R[dc->op1], t0);
1890 tcg_temp_free(t0);
1891 return 2;
1892 }
1893
1894 static int dec_neg_r(CPUCRISState *env, DisasContext *dc)
1895 {
1896 TCGv t[2];
1897 int size = memsize_zz(dc);
1898 LOG_DIS("neg.%c $r%u, $r%u\n",
1899 memsize_char(size), dc->op1, dc->op2);
1900 cris_cc_mask(dc, CC_MASK_NZVC);
1901 cris_alu_alloc_temps(dc, size, t);
1902 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1903
1904 cris_alu(dc, CC_OP_NEG, cpu_R[dc->op2], t[0], t[1], size);
1905 cris_alu_free_temps(dc, size, t);
1906 return 2;
1907 }
1908
1909 static int dec_btst_r(CPUCRISState *env, DisasContext *dc)
1910 {
1911 LOG_DIS("btst $r%u, $r%u\n",
1912 dc->op1, dc->op2);
1913 cris_cc_mask(dc, CC_MASK_NZ);
1914 cris_evaluate_flags(dc);
1915 gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->op2],
1916 cpu_R[dc->op1], cpu_PR[PR_CCS]);
1917 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2],
1918 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1919 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
1920 dc->flags_uptodate = 1;
1921 return 2;
1922 }
1923
1924 static int dec_sub_r(CPUCRISState *env, DisasContext *dc)
1925 {
1926 TCGv t[2];
1927 int size = memsize_zz(dc);
1928 LOG_DIS("sub.%c $r%u, $r%u\n",
1929 memsize_char(size), dc->op1, dc->op2);
1930 cris_cc_mask(dc, CC_MASK_NZVC);
1931 cris_alu_alloc_temps(dc, size, t);
1932 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1933 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], size);
1934 cris_alu_free_temps(dc, size, t);
1935 return 2;
1936 }
1937
1938 /* Zero extension. From size to dword. */
1939 static int dec_movu_r(CPUCRISState *env, DisasContext *dc)
1940 {
1941 TCGv t0;
1942 int size = memsize_z(dc);
1943 LOG_DIS("movu.%c $r%u, $r%u\n",
1944 memsize_char(size),
1945 dc->op1, dc->op2);
1946
1947 cris_cc_mask(dc, CC_MASK_NZ);
1948 t0 = tcg_temp_new();
1949 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0);
1950 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1951 tcg_temp_free(t0);
1952 return 2;
1953 }
1954
1955 /* Sign extension. From size to dword. */
1956 static int dec_movs_r(CPUCRISState *env, DisasContext *dc)
1957 {
1958 TCGv t0;
1959 int size = memsize_z(dc);
1960 LOG_DIS("movs.%c $r%u, $r%u\n",
1961 memsize_char(size),
1962 dc->op1, dc->op2);
1963
1964 cris_cc_mask(dc, CC_MASK_NZ);
1965 t0 = tcg_temp_new();
1966 /* Size can only be qi or hi. */
1967 t_gen_sext(t0, cpu_R[dc->op1], size);
1968 cris_alu(dc, CC_OP_MOVE,
1969 cpu_R[dc->op2], cpu_R[dc->op1], t0, 4);
1970 tcg_temp_free(t0);
1971 return 2;
1972 }
1973
1974 /* zero extension. From size to dword. */
1975 static int dec_addu_r(CPUCRISState *env, DisasContext *dc)
1976 {
1977 TCGv t0;
1978 int size = memsize_z(dc);
1979 LOG_DIS("addu.%c $r%u, $r%u\n",
1980 memsize_char(size),
1981 dc->op1, dc->op2);
1982
1983 cris_cc_mask(dc, CC_MASK_NZVC);
1984 t0 = tcg_temp_new();
1985 /* Size can only be qi or hi. */
1986 t_gen_zext(t0, cpu_R[dc->op1], size);
1987 cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1988 tcg_temp_free(t0);
1989 return 2;
1990 }
1991
1992 /* Sign extension. From size to dword. */
1993 static int dec_adds_r(CPUCRISState *env, DisasContext *dc)
1994 {
1995 TCGv t0;
1996 int size = memsize_z(dc);
1997 LOG_DIS("adds.%c $r%u, $r%u\n",
1998 memsize_char(size),
1999 dc->op1, dc->op2);
2000
2001 cris_cc_mask(dc, CC_MASK_NZVC);
2002 t0 = tcg_temp_new();
2003 /* Size can only be qi or hi. */
2004 t_gen_sext(t0, cpu_R[dc->op1], size);
2005 cris_alu(dc, CC_OP_ADD,
2006 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
2007 tcg_temp_free(t0);
2008 return 2;
2009 }
2010
2011 /* Zero extension. From size to dword. */
2012 static int dec_subu_r(CPUCRISState *env, DisasContext *dc)
2013 {
2014 TCGv t0;
2015 int size = memsize_z(dc);
2016 LOG_DIS("subu.%c $r%u, $r%u\n",
2017 memsize_char(size),
2018 dc->op1, dc->op2);
2019
2020 cris_cc_mask(dc, CC_MASK_NZVC);
2021 t0 = tcg_temp_new();
2022 /* Size can only be qi or hi. */
2023 t_gen_zext(t0, cpu_R[dc->op1], size);
2024 cris_alu(dc, CC_OP_SUB,
2025 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
2026 tcg_temp_free(t0);
2027 return 2;
2028 }
2029
2030 /* Sign extension. From size to dword. */
2031 static int dec_subs_r(CPUCRISState *env, DisasContext *dc)
2032 {
2033 TCGv t0;
2034 int size = memsize_z(dc);
2035 LOG_DIS("subs.%c $r%u, $r%u\n",
2036 memsize_char(size),
2037 dc->op1, dc->op2);
2038
2039 cris_cc_mask(dc, CC_MASK_NZVC);
2040 t0 = tcg_temp_new();
2041 /* Size can only be qi or hi. */
2042 t_gen_sext(t0, cpu_R[dc->op1], size);
2043 cris_alu(dc, CC_OP_SUB,
2044 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
2045 tcg_temp_free(t0);
2046 return 2;
2047 }
2048
2049 static int dec_setclrf(CPUCRISState *env, DisasContext *dc)
2050 {
2051 uint32_t flags;
2052 int set = (~dc->opcode >> 2) & 1;
2053
2054
2055 flags = (EXTRACT_FIELD(dc->ir, 12, 15) << 4)
2056 | EXTRACT_FIELD(dc->ir, 0, 3);
2057 if (set && flags == 0) {
2058 LOG_DIS("nop\n");
2059 return 2;
2060 } else if (!set && (flags & 0x20)) {
2061 LOG_DIS("di\n");
2062 } else {
2063 LOG_DIS("%sf %x\n", set ? "set" : "clr", flags);
2064 }
2065
2066 /* User space is not allowed to touch these. Silently ignore. */
2067 if (dc->tb_flags & U_FLAG) {
2068 flags &= ~(S_FLAG | I_FLAG | U_FLAG);
2069 }
2070
2071 if (flags & X_FLAG) {
2072 dc->flagx_known = 1;
2073 if (set) {
2074 dc->flags_x = X_FLAG;
2075 } else {
2076 dc->flags_x = 0;
2077 }
2078 }
2079
2080 /* Break the TB if any of the SPI flag changes. */
2081 if (flags & (P_FLAG | S_FLAG)) {
2082 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2083 dc->is_jmp = DISAS_UPDATE;
2084 dc->cpustate_changed = 1;
2085 }
2086
2087 /* For the I flag, only act on posedge. */
2088 if ((flags & I_FLAG)) {
2089 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2090 dc->is_jmp = DISAS_UPDATE;
2091 dc->cpustate_changed = 1;
2092 }
2093
2094
2095 /* Simply decode the flags. */
2096 cris_evaluate_flags(dc);
2097 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
2098 cris_update_cc_x(dc);
2099 tcg_gen_movi_tl(cc_op, dc->cc_op);
2100
2101 if (set) {
2102 if (!(dc->tb_flags & U_FLAG) && (flags & U_FLAG)) {
2103 /* Enter user mode. */
2104 t_gen_mov_env_TN(ksp, cpu_R[R_SP]);
2105 tcg_gen_mov_tl(cpu_R[R_SP], cpu_PR[PR_USP]);
2106 dc->cpustate_changed = 1;
2107 }
2108 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags);
2109 } else {
2110 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~flags);
2111 }
2112
2113 dc->flags_uptodate = 1;
2114 dc->clear_x = 0;
2115 return 2;
2116 }
2117
2118 static int dec_move_rs(CPUCRISState *env, DisasContext *dc)
2119 {
2120 LOG_DIS("move $r%u, $s%u\n", dc->op1, dc->op2);
2121 cris_cc_mask(dc, 0);
2122 gen_helper_movl_sreg_reg(cpu_env, tcg_const_tl(dc->op2),
2123 tcg_const_tl(dc->op1));
2124 return 2;
2125 }
2126 static int dec_move_sr(CPUCRISState *env, DisasContext *dc)
2127 {
2128 LOG_DIS("move $s%u, $r%u\n", dc->op2, dc->op1);
2129 cris_cc_mask(dc, 0);
2130 gen_helper_movl_reg_sreg(cpu_env, tcg_const_tl(dc->op1),
2131 tcg_const_tl(dc->op2));
2132 return 2;
2133 }
2134
2135 static int dec_move_rp(CPUCRISState *env, DisasContext *dc)
2136 {
2137 TCGv t[2];
2138 LOG_DIS("move $r%u, $p%u\n", dc->op1, dc->op2);
2139 cris_cc_mask(dc, 0);
2140
2141 t[0] = tcg_temp_new();
2142 if (dc->op2 == PR_CCS) {
2143 cris_evaluate_flags(dc);
2144 t_gen_mov_TN_reg(t[0], dc->op1);
2145 if (dc->tb_flags & U_FLAG) {
2146 t[1] = tcg_temp_new();
2147 /* User space is not allowed to touch all flags. */
2148 tcg_gen_andi_tl(t[0], t[0], 0x39f);
2149 tcg_gen_andi_tl(t[1], cpu_PR[PR_CCS], ~0x39f);
2150 tcg_gen_or_tl(t[0], t[1], t[0]);
2151 tcg_temp_free(t[1]);
2152 }
2153 } else {
2154 t_gen_mov_TN_reg(t[0], dc->op1);
2155 }
2156
2157 t_gen_mov_preg_TN(dc, dc->op2, t[0]);
2158 if (dc->op2 == PR_CCS) {
2159 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
2160 dc->flags_uptodate = 1;
2161 }
2162 tcg_temp_free(t[0]);
2163 return 2;
2164 }
2165 static int dec_move_pr(CPUCRISState *env, DisasContext *dc)
2166 {
2167 TCGv t0;
2168 LOG_DIS("move $p%u, $r%u\n", dc->op2, dc->op1);
2169 cris_cc_mask(dc, 0);
2170
2171 if (dc->op2 == PR_CCS) {
2172 cris_evaluate_flags(dc);
2173 }
2174
2175 if (dc->op2 == PR_DZ) {
2176 tcg_gen_movi_tl(cpu_R[dc->op1], 0);
2177 } else {
2178 t0 = tcg_temp_new();
2179 t_gen_mov_TN_preg(t0, dc->op2);
2180 cris_alu(dc, CC_OP_MOVE,
2181 cpu_R[dc->op1], cpu_R[dc->op1], t0,
2182 preg_sizes[dc->op2]);
2183 tcg_temp_free(t0);
2184 }
2185 return 2;
2186 }
2187
2188 static int dec_move_mr(CPUCRISState *env, DisasContext *dc)
2189 {
2190 int memsize = memsize_zz(dc);
2191 int insn_len;
2192 LOG_DIS("move.%c [$r%u%s, $r%u\n",
2193 memsize_char(memsize),
2194 dc->op1, dc->postinc ? "+]" : "]",
2195 dc->op2);
2196
2197 if (memsize == 4) {
2198 insn_len = dec_prep_move_m(env, dc, 0, 4, cpu_R[dc->op2]);
2199 cris_cc_mask(dc, CC_MASK_NZ);
2200 cris_update_cc_op(dc, CC_OP_MOVE, 4);
2201 cris_update_cc_x(dc);
2202 cris_update_result(dc, cpu_R[dc->op2]);
2203 } else {
2204 TCGv t0;
2205
2206 t0 = tcg_temp_new();
2207 insn_len = dec_prep_move_m(env, dc, 0, memsize, t0);
2208 cris_cc_mask(dc, CC_MASK_NZ);
2209 cris_alu(dc, CC_OP_MOVE,
2210 cpu_R[dc->op2], cpu_R[dc->op2], t0, memsize);
2211 tcg_temp_free(t0);
2212 }
2213 do_postinc(dc, memsize);
2214 return insn_len;
2215 }
2216
2217 static inline void cris_alu_m_alloc_temps(TCGv *t)
2218 {
2219 t[0] = tcg_temp_new();
2220 t[1] = tcg_temp_new();
2221 }
2222
2223 static inline void cris_alu_m_free_temps(TCGv *t)
2224 {
2225 tcg_temp_free(t[0]);
2226 tcg_temp_free(t[1]);
2227 }
2228
2229 static int dec_movs_m(CPUCRISState *env, DisasContext *dc)
2230 {
2231 TCGv t[2];
2232 int memsize = memsize_z(dc);
2233 int insn_len;
2234 LOG_DIS("movs.%c [$r%u%s, $r%u\n",
2235 memsize_char(memsize),
2236 dc->op1, dc->postinc ? "+]" : "]",
2237 dc->op2);
2238
2239 cris_alu_m_alloc_temps(t);
2240 /* sign extend. */
2241 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2242 cris_cc_mask(dc, CC_MASK_NZ);
2243 cris_alu(dc, CC_OP_MOVE,
2244 cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2245 do_postinc(dc, memsize);
2246 cris_alu_m_free_temps(t);
2247 return insn_len;
2248 }
2249
2250 static int dec_addu_m(CPUCRISState *env, DisasContext *dc)
2251 {
2252 TCGv t[2];
2253 int memsize = memsize_z(dc);
2254 int insn_len;
2255 LOG_DIS("addu.%c [$r%u%s, $r%u\n",
2256 memsize_char(memsize),
2257 dc->op1, dc->postinc ? "+]" : "]",
2258 dc->op2);
2259
2260 cris_alu_m_alloc_temps(t);
2261 /* sign extend. */
2262 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2263 cris_cc_mask(dc, CC_MASK_NZVC);
2264 cris_alu(dc, CC_OP_ADD,
2265 cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2266 do_postinc(dc, memsize);
2267 cris_alu_m_free_temps(t);
2268 return insn_len;
2269 }
2270
2271 static int dec_adds_m(CPUCRISState *env, DisasContext *dc)
2272 {
2273 TCGv t[2];
2274 int memsize = memsize_z(dc);
2275 int insn_len;
2276 LOG_DIS("adds.%c [$r%u%s, $r%u\n",
2277 memsize_char(memsize),
2278 dc->op1, dc->postinc ? "+]" : "]",
2279 dc->op2);
2280
2281 cris_alu_m_alloc_temps(t);
2282 /* sign extend. */
2283 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2284 cris_cc_mask(dc, CC_MASK_NZVC);
2285 cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2286 do_postinc(dc, memsize);
2287 cris_alu_m_free_temps(t);
2288 return insn_len;
2289 }
2290
2291 static int dec_subu_m(CPUCRISState *env, DisasContext *dc)
2292 {
2293 TCGv t[2];
2294 int memsize = memsize_z(dc);
2295 int insn_len;
2296 LOG_DIS("subu.%c [$r%u%s, $r%u\n",
2297 memsize_char(memsize),
2298 dc->op1, dc->postinc ? "+]" : "]",
2299 dc->op2);
2300
2301 cris_alu_m_alloc_temps(t);
2302 /* sign extend. */
2303 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2304 cris_cc_mask(dc, CC_MASK_NZVC);
2305 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2306 do_postinc(dc, memsize);
2307 cris_alu_m_free_temps(t);
2308 return insn_len;
2309 }
2310
2311 static int dec_subs_m(CPUCRISState *env, DisasContext *dc)
2312 {
2313 TCGv t[2];
2314 int memsize = memsize_z(dc);
2315 int insn_len;
2316 LOG_DIS("subs.%c [$r%u%s, $r%u\n",
2317 memsize_char(memsize),
2318 dc->op1, dc->postinc ? "+]" : "]",
2319 dc->op2);
2320
2321 cris_alu_m_alloc_temps(t);
2322 /* sign extend. */
2323 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2324 cris_cc_mask(dc, CC_MASK_NZVC);
2325 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2326 do_postinc(dc, memsize);
2327 cris_alu_m_free_temps(t);
2328 return insn_len;
2329 }
2330
2331 static int dec_movu_m(CPUCRISState *env, DisasContext *dc)
2332 {
2333 TCGv t[2];
2334 int memsize = memsize_z(dc);
2335 int insn_len;
2336
2337 LOG_DIS("movu.%c [$r%u%s, $r%u\n",
2338 memsize_char(memsize),
2339 dc->op1, dc->postinc ? "+]" : "]",
2340 dc->op2);
2341
2342 cris_alu_m_alloc_temps(t);
2343 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2344 cris_cc_mask(dc, CC_MASK_NZ);
2345 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2346 do_postinc(dc, memsize);
2347 cris_alu_m_free_temps(t);
2348 return insn_len;
2349 }
2350
2351 static int dec_cmpu_m(CPUCRISState *env, DisasContext *dc)
2352 {
2353 TCGv t[2];
2354 int memsize = memsize_z(dc);
2355 int insn_len;
2356 LOG_DIS("cmpu.%c [$r%u%s, $r%u\n",
2357 memsize_char(memsize),
2358 dc->op1, dc->postinc ? "+]" : "]",
2359 dc->op2);
2360
2361 cris_alu_m_alloc_temps(t);
2362 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2363 cris_cc_mask(dc, CC_MASK_NZVC);
2364 cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2365 do_postinc(dc, memsize);
2366 cris_alu_m_free_temps(t);
2367 return insn_len;
2368 }
2369
2370 static int dec_cmps_m(CPUCRISState *env, DisasContext *dc)
2371 {
2372 TCGv t[2];
2373 int memsize = memsize_z(dc);
2374 int insn_len;
2375 LOG_DIS("cmps.%c [$r%u%s, $r%u\n",
2376 memsize_char(memsize),
2377 dc->op1, dc->postinc ? "+]" : "]",
2378 dc->op2);
2379
2380 cris_alu_m_alloc_temps(t);
2381 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2382 cris_cc_mask(dc, CC_MASK_NZVC);
2383 cris_alu(dc, CC_OP_CMP,
2384 cpu_R[dc->op2], cpu_R[dc->op2], t[1],
2385 memsize_zz(dc));
2386 do_postinc(dc, memsize);
2387 cris_alu_m_free_temps(t);
2388 return insn_len;
2389 }
2390
2391 static int dec_cmp_m(CPUCRISState *env, DisasContext *dc)
2392 {
2393 TCGv t[2];
2394 int memsize = memsize_zz(dc);
2395 int insn_len;
2396 LOG_DIS("cmp.%c [$r%u%s, $r%u\n",
2397 memsize_char(memsize),
2398 dc->op1, dc->postinc ? "+]" : "]",
2399 dc->op2);
2400
2401 cris_alu_m_alloc_temps(t);
2402 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2403 cris_cc_mask(dc, CC_MASK_NZVC);
2404 cris_alu(dc, CC_OP_CMP,
2405 cpu_R[dc->op2], cpu_R[dc->op2], t[1],
2406 memsize_zz(dc));
2407 do_postinc(dc, memsize);
2408 cris_alu_m_free_temps(t);
2409 return insn_len;
2410 }
2411
2412 static int dec_test_m(CPUCRISState *env, DisasContext *dc)
2413 {
2414 TCGv t[2];
2415 int memsize = memsize_zz(dc);
2416 int insn_len;
2417 LOG_DIS("test.%c [$r%u%s] op2=%x\n",
2418 memsize_char(memsize),
2419 dc->op1, dc->postinc ? "+]" : "]",
2420 dc->op2);
2421
2422 cris_evaluate_flags(dc);
2423
2424 cris_alu_m_alloc_temps(t);
2425 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2426 cris_cc_mask(dc, CC_MASK_NZ);
2427 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3);
2428
2429 cris_alu(dc, CC_OP_CMP,
2430 cpu_R[dc->op2], t[1], tcg_const_tl(0), memsize_zz(dc));
2431 do_postinc(dc, memsize);
2432 cris_alu_m_free_temps(t);
2433 return insn_len;
2434 }
2435
2436 static int dec_and_m(CPUCRISState *env, DisasContext *dc)
2437 {
2438 TCGv t[2];
2439 int memsize = memsize_zz(dc);
2440 int insn_len;
2441 LOG_DIS("and.%c [$r%u%s, $r%u\n",
2442 memsize_char(memsize),
2443 dc->op1, dc->postinc ? "+]" : "]",
2444 dc->op2);
2445
2446 cris_alu_m_alloc_temps(t);
2447 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2448 cris_cc_mask(dc, CC_MASK_NZ);
2449 cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
2450 do_postinc(dc, memsize);
2451 cris_alu_m_free_temps(t);
2452 return insn_len;
2453 }
2454
2455 static int dec_add_m(CPUCRISState *env, DisasContext *dc)
2456 {
2457 TCGv t[2];
2458 int memsize = memsize_zz(dc);
2459 int insn_len;
2460 LOG_DIS("add.%c [$r%u%s, $r%u\n",
2461 memsize_char(memsize),
2462 dc->op1, dc->postinc ? "+]" : "]",
2463 dc->op2);
2464
2465 cris_alu_m_alloc_temps(t);
2466 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2467 cris_cc_mask(dc, CC_MASK_NZVC);
2468 cris_alu(dc, CC_OP_ADD,
2469 cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
2470 do_postinc(dc, memsize);
2471 cris_alu_m_free_temps(t);
2472 return insn_len;
2473 }
2474
2475 static int dec_addo_m(CPUCRISState *env, DisasContext *dc)
2476 {
2477 TCGv t[2];
2478 int memsize = memsize_zz(dc);
2479 int insn_len;
2480 LOG_DIS("add.%c [$r%u%s, $r%u\n",
2481 memsize_char(memsize),
2482 dc->op1, dc->postinc ? "+]" : "]",
2483 dc->op2);
2484
2485 cris_alu_m_alloc_temps(t);
2486 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2487 cris_cc_mask(dc, 0);
2488 cris_alu(dc, CC_OP_ADD, cpu_R[R_ACR], t[0], t[1], 4);
2489 do_postinc(dc, memsize);
2490 cris_alu_m_free_temps(t);
2491 return insn_len;
2492 }
2493
2494 static int dec_bound_m(CPUCRISState *env, DisasContext *dc)
2495 {
2496 TCGv l[2];
2497 int memsize = memsize_zz(dc);
2498 int insn_len;
2499 LOG_DIS("bound.%c [$r%u%s, $r%u\n",
2500 memsize_char(memsize),
2501 dc->op1, dc->postinc ? "+]" : "]",
2502 dc->op2);
2503
2504 l[0] = tcg_temp_local_new();
2505 l[1] = tcg_temp_local_new();
2506 insn_len = dec_prep_alu_m(env, dc, 0, memsize, l[0], l[1]);
2507 cris_cc_mask(dc, CC_MASK_NZ);
2508 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], l[0], l[1], 4);
2509 do_postinc(dc, memsize);
2510 tcg_temp_free(l[0]);
2511 tcg_temp_free(l[1]);
2512 return insn_len;
2513 }
2514
2515 static int dec_addc_mr(CPUCRISState *env, DisasContext *dc)
2516 {
2517 TCGv t[2];
2518 int insn_len = 2;
2519 LOG_DIS("addc [$r%u%s, $r%u\n",
2520 dc->op1, dc->postinc ? "+]" : "]",
2521 dc->op2);
2522
2523 cris_evaluate_flags(dc);
2524
2525 /* Set for this insn. */
2526 dc->flagx_known = 1;
2527 dc->flags_x = X_FLAG;
2528
2529 cris_alu_m_alloc_temps(t);
2530 insn_len = dec_prep_alu_m(env, dc, 0, 4, t[0], t[1]);
2531 cris_cc_mask(dc, CC_MASK_NZVC);
2532 cris_alu(dc, CC_OP_ADDC, cpu_R[dc->op2], t[0], t[1], 4);
2533 do_postinc(dc, 4);
2534 cris_alu_m_free_temps(t);
2535 return insn_len;
2536 }
2537
2538 static int dec_sub_m(CPUCRISState *env, DisasContext *dc)
2539 {
2540 TCGv t[2];
2541 int memsize = memsize_zz(dc);
2542 int insn_len;
2543 LOG_DIS("sub.%c [$r%u%s, $r%u ir=%x zz=%x\n",
2544 memsize_char(memsize),
2545 dc->op1, dc->postinc ? "+]" : "]",
2546 dc->op2, dc->ir, dc->zzsize);
2547
2548 cris_alu_m_alloc_temps(t);
2549 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2550 cris_cc_mask(dc, CC_MASK_NZVC);
2551 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], memsize);
2552 do_postinc(dc, memsize);
2553 cris_alu_m_free_temps(t);
2554 return insn_len;
2555 }
2556
2557 static int dec_or_m(CPUCRISState *env, DisasContext *dc)
2558 {
2559 TCGv t[2];
2560 int memsize = memsize_zz(dc);
2561 int insn_len;
2562 LOG_DIS("or.%c [$r%u%s, $r%u pc=%x\n",
2563 memsize_char(memsize),
2564 dc->op1, dc->postinc ? "+]" : "]",
2565 dc->op2, dc->pc);
2566
2567 cris_alu_m_alloc_temps(t);
2568 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2569 cris_cc_mask(dc, CC_MASK_NZ);
2570 cris_alu(dc, CC_OP_OR,
2571 cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
2572 do_postinc(dc, memsize);
2573 cris_alu_m_free_temps(t);
2574 return insn_len;
2575 }
2576
2577 static int dec_move_mp(CPUCRISState *env, DisasContext *dc)
2578 {
2579 TCGv t[2];
2580 int memsize = memsize_zz(dc);
2581 int insn_len = 2;
2582
2583 LOG_DIS("move.%c [$r%u%s, $p%u\n",
2584 memsize_char(memsize),
2585 dc->op1,
2586 dc->postinc ? "+]" : "]",
2587 dc->op2);
2588
2589 cris_alu_m_alloc_temps(t);
2590 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2591 cris_cc_mask(dc, 0);
2592 if (dc->op2 == PR_CCS) {
2593 cris_evaluate_flags(dc);
2594 if (dc->tb_flags & U_FLAG) {
2595 /* User space is not allowed to touch all flags. */
2596 tcg_gen_andi_tl(t[1], t[1], 0x39f);
2597 tcg_gen_andi_tl(t[0], cpu_PR[PR_CCS], ~0x39f);
2598 tcg_gen_or_tl(t[1], t[0], t[1]);
2599 }
2600 }
2601
2602 t_gen_mov_preg_TN(dc, dc->op2, t[1]);
2603
2604 do_postinc(dc, memsize);
2605 cris_alu_m_free_temps(t);
2606 return insn_len;
2607 }
2608
2609 static int dec_move_pm(CPUCRISState *env, DisasContext *dc)
2610 {
2611 TCGv t0;
2612 int memsize;
2613
2614 memsize = preg_sizes[dc->op2];
2615
2616 LOG_DIS("move.%c $p%u, [$r%u%s\n",
2617 memsize_char(memsize),
2618 dc->op2, dc->op1, dc->postinc ? "+]" : "]");
2619
2620 /* prepare store. Address in T0, value in T1. */
2621 if (dc->op2 == PR_CCS) {
2622 cris_evaluate_flags(dc);
2623 }
2624 t0 = tcg_temp_new();
2625 t_gen_mov_TN_preg(t0, dc->op2);
2626 cris_flush_cc_state(dc);
2627 gen_store(dc, cpu_R[dc->op1], t0, memsize);
2628 tcg_temp_free(t0);
2629
2630 cris_cc_mask(dc, 0);
2631 if (dc->postinc) {
2632 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize);
2633 }
2634 return 2;
2635 }
2636
2637 static int dec_movem_mr(CPUCRISState *env, DisasContext *dc)
2638 {
2639 TCGv_i64 tmp[16];
2640 TCGv tmp32;
2641 TCGv addr;
2642 int i;
2643 int nr = dc->op2 + 1;
2644
2645 LOG_DIS("movem [$r%u%s, $r%u\n", dc->op1,
2646 dc->postinc ? "+]" : "]", dc->op2);
2647
2648 addr = tcg_temp_new();
2649 /* There are probably better ways of doing this. */
2650 cris_flush_cc_state(dc);
2651 for (i = 0; i < (nr >> 1); i++) {
2652 tmp[i] = tcg_temp_new_i64();
2653 tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8);
2654 gen_load64(dc, tmp[i], addr);
2655 }
2656 if (nr & 1) {
2657 tmp32 = tcg_temp_new_i32();
2658 tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8);
2659 gen_load(dc, tmp32, addr, 4, 0);
2660 } else {
2661 TCGV_UNUSED(tmp32);
2662 }
2663 tcg_temp_free(addr);
2664
2665 for (i = 0; i < (nr >> 1); i++) {
2666 tcg_gen_trunc_i64_i32(cpu_R[i * 2], tmp[i]);
2667 tcg_gen_shri_i64(tmp[i], tmp[i], 32);
2668 tcg_gen_trunc_i64_i32(cpu_R[i * 2 + 1], tmp[i]);
2669 tcg_temp_free_i64(tmp[i]);
2670 }
2671 if (nr & 1) {
2672 tcg_gen_mov_tl(cpu_R[dc->op2], tmp32);
2673 tcg_temp_free(tmp32);
2674 }
2675
2676 /* writeback the updated pointer value. */
2677 if (dc->postinc) {
2678 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], nr * 4);
2679 }
2680
2681 /* gen_load might want to evaluate the previous insns flags. */
2682 cris_cc_mask(dc, 0);
2683 return 2;
2684 }
2685
2686 static int dec_movem_rm(CPUCRISState *env, DisasContext *dc)
2687 {
2688 TCGv tmp;
2689 TCGv addr;
2690 int i;
2691
2692 LOG_DIS("movem $r%u, [$r%u%s\n", dc->op2, dc->op1,
2693 dc->postinc ? "+]" : "]");
2694
2695 cris_flush_cc_state(dc);
2696
2697 tmp = tcg_temp_new();
2698 addr = tcg_temp_new();
2699 tcg_gen_movi_tl(tmp, 4);
2700 tcg_gen_mov_tl(addr, cpu_R[dc->op1]);
2701 for (i = 0; i <= dc->op2; i++) {
2702 /* Displace addr. */
2703 /* Perform the store. */
2704 gen_store(dc, addr, cpu_R[i], 4);
2705 tcg_gen_add_tl(addr, addr, tmp);
2706 }
2707 if (dc->postinc) {
2708 tcg_gen_mov_tl(cpu_R[dc->op1], addr);
2709 }
2710 cris_cc_mask(dc, 0);
2711 tcg_temp_free(tmp);
2712 tcg_temp_free(addr);
2713 return 2;
2714 }
2715
2716 static int dec_move_rm(CPUCRISState *env, DisasContext *dc)
2717 {
2718 int memsize;
2719
2720 memsize = memsize_zz(dc);
2721
2722 LOG_DIS("move.%c $r%u, [$r%u]\n",
2723 memsize_char(memsize), dc->op2, dc->op1);
2724
2725 /* prepare store. */
2726 cris_flush_cc_state(dc);
2727 gen_store(dc, cpu_R[dc->op1], cpu_R[dc->op2], memsize);
2728
2729 if (dc->postinc) {
2730 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize);
2731 }
2732 cris_cc_mask(dc, 0);
2733 return 2;
2734 }
2735
2736 static int dec_lapcq(CPUCRISState *env, DisasContext *dc)
2737 {
2738 LOG_DIS("lapcq %x, $r%u\n",
2739 dc->pc + dc->op1*2, dc->op2);
2740 cris_cc_mask(dc, 0);
2741 tcg_gen_movi_tl(cpu_R[dc->op2], dc->pc + dc->op1 * 2);
2742 return 2;
2743 }
2744
2745 static int dec_lapc_im(CPUCRISState *env, DisasContext *dc)
2746 {
2747 unsigned int rd;
2748 int32_t imm;
2749 int32_t pc;
2750
2751 rd = dc->op2;
2752
2753 cris_cc_mask(dc, 0);
2754 imm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2755 LOG_DIS("lapc 0x%x, $r%u\n", imm + dc->pc, dc->op2);
2756
2757 pc = dc->pc;
2758 pc += imm;
2759 tcg_gen_movi_tl(cpu_R[rd], pc);
2760 return 6;
2761 }
2762
2763 /* Jump to special reg. */
2764 static int dec_jump_p(CPUCRISState *env, DisasContext *dc)
2765 {
2766 LOG_DIS("jump $p%u\n", dc->op2);
2767
2768 if (dc->op2 == PR_CCS) {
2769 cris_evaluate_flags(dc);
2770 }
2771 t_gen_mov_TN_preg(env_btarget, dc->op2);
2772 /* rete will often have low bit set to indicate delayslot. */
2773 tcg_gen_andi_tl(env_btarget, env_btarget, ~1);
2774 cris_cc_mask(dc, 0);
2775 cris_prepare_jmp(dc, JMP_INDIRECT);
2776 return 2;
2777 }
2778
2779 /* Jump and save. */
2780 static int dec_jas_r(CPUCRISState *env, DisasContext *dc)
2781 {
2782 LOG_DIS("jas $r%u, $p%u\n", dc->op1, dc->op2);
2783 cris_cc_mask(dc, 0);
2784 /* Store the return address in Pd. */
2785 tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]);
2786 if (dc->op2 > 15) {
2787 abort();
2788 }
2789 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4));
2790
2791 cris_prepare_jmp(dc, JMP_INDIRECT);
2792 return 2;
2793 }
2794
2795 static int dec_jas_im(CPUCRISState *env, DisasContext *dc)
2796 {
2797 uint32_t imm;
2798
2799 imm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2800
2801 LOG_DIS("jas 0x%x\n", imm);
2802 cris_cc_mask(dc, 0);
2803 /* Store the return address in Pd. */
2804 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8));
2805
2806 dc->jmp_pc = imm;
2807 cris_prepare_jmp(dc, JMP_DIRECT);
2808 return 6;
2809 }
2810
2811 static int dec_jasc_im(CPUCRISState *env, DisasContext *dc)
2812 {
2813 uint32_t imm;
2814
2815 imm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2816
2817 LOG_DIS("jasc 0x%x\n", imm);
2818 cris_cc_mask(dc, 0);
2819 /* Store the return address in Pd. */
2820 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8 + 4));
2821
2822 dc->jmp_pc = imm;
2823 cris_prepare_jmp(dc, JMP_DIRECT);
2824 return 6;
2825 }
2826
2827 static int dec_jasc_r(CPUCRISState *env, DisasContext *dc)
2828 {
2829 LOG_DIS("jasc_r $r%u, $p%u\n", dc->op1, dc->op2);
2830 cris_cc_mask(dc, 0);
2831 /* Store the return address in Pd. */
2832 tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]);
2833 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4 + 4));
2834 cris_prepare_jmp(dc, JMP_INDIRECT);
2835 return 2;
2836 }
2837
2838 static int dec_bcc_im(CPUCRISState *env, DisasContext *dc)
2839 {
2840 int32_t offset;
2841 uint32_t cond = dc->op2;
2842
2843 offset = cris_fetch(env, dc, dc->pc + 2, 2, 1);
2844
2845 LOG_DIS("b%s %d pc=%x dst=%x\n",
2846 cc_name(cond), offset,
2847 dc->pc, dc->pc + offset);
2848
2849 cris_cc_mask(dc, 0);
2850 /* op2 holds the condition-code. */
2851 cris_prepare_cc_branch(dc, offset, cond);
2852 return 4;
2853 }
2854
2855 static int dec_bas_im(CPUCRISState *env, DisasContext *dc)
2856 {
2857 int32_t simm;
2858
2859 simm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2860
2861 LOG_DIS("bas 0x%x, $p%u\n", dc->pc + simm, dc->op2);
2862 cris_cc_mask(dc, 0);
2863 /* Store the return address in Pd. */
2864 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8));
2865
2866 dc->jmp_pc = dc->pc + simm;
2867 cris_prepare_jmp(dc, JMP_DIRECT);
2868 return 6;
2869 }
2870
2871 static int dec_basc_im(CPUCRISState *env, DisasContext *dc)
2872 {
2873 int32_t simm;
2874 simm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2875
2876 LOG_DIS("basc 0x%x, $p%u\n", dc->pc + simm, dc->op2);
2877 cris_cc_mask(dc, 0);
2878 /* Store the return address in Pd. */
2879 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 12));
2880
2881 dc->jmp_pc = dc->pc + simm;
2882 cris_prepare_jmp(dc, JMP_DIRECT);
2883 return 6;
2884 }
2885
2886 static int dec_rfe_etc(CPUCRISState *env, DisasContext *dc)
2887 {
2888 cris_cc_mask(dc, 0);
2889
2890 if (dc->op2 == 15) {
2891 tcg_gen_st_i32(tcg_const_i32(1), cpu_env,
2892 -offsetof(CRISCPU, env) + offsetof(CPUState, halted));
2893 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2894 t_gen_raise_exception(EXCP_HLT);
2895 return 2;
2896 }
2897
2898 switch (dc->op2 & 7) {
2899 case 2:
2900 /* rfe. */
2901 LOG_DIS("rfe\n");
2902 cris_evaluate_flags(dc);
2903 gen_helper_rfe(cpu_env);
2904 dc->is_jmp = DISAS_UPDATE;
2905 break;
2906 case 5:
2907 /* rfn. */
2908 LOG_DIS("rfn\n");
2909 cris_evaluate_flags(dc);
2910 gen_helper_rfn(cpu_env);
2911 dc->is_jmp = DISAS_UPDATE;
2912 break;
2913 case 6:
2914 LOG_DIS("break %d\n", dc->op1);
2915 cris_evaluate_flags(dc);
2916 /* break. */
2917 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2918
2919 /* Breaks start at 16 in the exception vector. */
2920 t_gen_mov_env_TN(trap_vector,
2921 tcg_const_tl(dc->op1 + 16));
2922 t_gen_raise_exception(EXCP_BREAK);
2923 dc->is_jmp = DISAS_UPDATE;
2924 break;
2925 default:
2926 printf("op2=%x\n", dc->op2);
2927 BUG();
2928 break;
2929
2930 }
2931 return 2;
2932 }
2933
2934 static int dec_ftag_fidx_d_m(CPUCRISState *env, DisasContext *dc)
2935 {
2936 return 2;
2937 }
2938
2939 static int dec_ftag_fidx_i_m(CPUCRISState *env, DisasContext *dc)
2940 {
2941 return 2;
2942 }
2943
2944 static int dec_null(CPUCRISState *env, DisasContext *dc)
2945 {
2946 printf("unknown insn pc=%x opc=%x op1=%x op2=%x\n",
2947 dc->pc, dc->opcode, dc->op1, dc->op2);
2948 fflush(NULL);
2949 BUG();
2950 return 2;
2951 }
2952
2953 static struct decoder_info {
2954 struct {
2955 uint32_t bits;
2956 uint32_t mask;
2957 };
2958 int (*dec)(CPUCRISState *env, DisasContext *dc);
2959 } decinfo[] = {
2960 /* Order matters here. */
2961 {DEC_MOVEQ, dec_moveq},
2962 {DEC_BTSTQ, dec_btstq},
2963 {DEC_CMPQ, dec_cmpq},
2964 {DEC_ADDOQ, dec_addoq},
2965 {DEC_ADDQ, dec_addq},
2966 {DEC_SUBQ, dec_subq},
2967 {DEC_ANDQ, dec_andq},
2968 {DEC_ORQ, dec_orq},
2969 {DEC_ASRQ, dec_asrq},
2970 {DEC_LSLQ, dec_lslq},
2971 {DEC_LSRQ, dec_lsrq},
2972 {DEC_BCCQ, dec_bccq},
2973
2974 {DEC_BCC_IM, dec_bcc_im},
2975 {DEC_JAS_IM, dec_jas_im},
2976 {DEC_JAS_R, dec_jas_r},
2977 {DEC_JASC_IM, dec_jasc_im},
2978 {DEC_JASC_R, dec_jasc_r},
2979 {DEC_BAS_IM, dec_bas_im},
2980 {DEC_BASC_IM, dec_basc_im},
2981 {DEC_JUMP_P, dec_jump_p},
2982 {DEC_LAPC_IM, dec_lapc_im},
2983 {DEC_LAPCQ, dec_lapcq},
2984
2985 {DEC_RFE_ETC, dec_rfe_etc},
2986 {DEC_ADDC_MR, dec_addc_mr},
2987
2988 {DEC_MOVE_MP, dec_move_mp},
2989 {DEC_MOVE_PM, dec_move_pm},
2990 {DEC_MOVEM_MR, dec_movem_mr},
2991 {DEC_MOVEM_RM, dec_movem_rm},
2992 {DEC_MOVE_PR, dec_move_pr},
2993 {DEC_SCC_R, dec_scc_r},
2994 {DEC_SETF, dec_setclrf},
2995 {DEC_CLEARF, dec_setclrf},
2996
2997 {DEC_MOVE_SR, dec_move_sr},
2998 {DEC_MOVE_RP, dec_move_rp},
2999 {DEC_SWAP_R, dec_swap_r},
3000 {DEC_ABS_R, dec_abs_r},
3001 {DEC_LZ_R, dec_lz_r},
3002 {DEC_MOVE_RS, dec_move_rs},
3003 {DEC_BTST_R, dec_btst_r},
3004 {DEC_ADDC_R, dec_addc_r},
3005
3006 {DEC_DSTEP_R, dec_dstep_r},
3007 {DEC_XOR_R, dec_xor_r},
3008 {DEC_MCP_R, dec_mcp_r},
3009 {DEC_CMP_R, dec_cmp_r},
3010
3011 {DEC_ADDI_R, dec_addi_r},
3012 {DEC_ADDI_ACR, dec_addi_acr},
3013
3014 {DEC_ADD_R, dec_add_r},
3015 {DEC_SUB_R, dec_sub_r},
3016
3017 {DEC_ADDU_R, dec_addu_r},
3018 {DEC_ADDS_R, dec_adds_r},
3019 {DEC_SUBU_R, dec_subu_r},
3020 {DEC_SUBS_R, dec_subs_r},
3021 {DEC_LSL_R, dec_lsl_r},
3022
3023 {DEC_AND_R, dec_and_r},
3024 {DEC_OR_R, dec_or_r},
3025 {DEC_BOUND_R, dec_bound_r},
3026 {DEC_ASR_R, dec_asr_r},
3027 {DEC_LSR_R, dec_lsr_r},
3028
3029 {DEC_MOVU_R, dec_movu_r},
3030 {DEC_MOVS_R, dec_movs_r},
3031 {DEC_NEG_R, dec_neg_r},
3032 {DEC_MOVE_R, dec_move_r},
3033
3034 {DEC_FTAG_FIDX_I_M, dec_ftag_fidx_i_m},
3035 {DEC_FTAG_FIDX_D_M, dec_ftag_fidx_d_m},
3036
3037 {DEC_MULS_R, dec_muls_r},
3038 {DEC_MULU_R, dec_mulu_r},
3039
3040 {DEC_ADDU_M, dec_addu_m},
3041 {DEC_ADDS_M, dec_adds_m},
3042 {DEC_SUBU_M, dec_subu_m},
3043 {DEC_SUBS_M, dec_subs_m},
3044
3045 {DEC_CMPU_M, dec_cmpu_m},
3046 {DEC_CMPS_M, dec_cmps_m},
3047 {DEC_MOVU_M, dec_movu_m},
3048 {DEC_MOVS_M, dec_movs_m},
3049
3050 {DEC_CMP_M, dec_cmp_m},
3051 {DEC_ADDO_M, dec_addo_m},
3052 {DEC_BOUND_M, dec_bound_m},
3053 {DEC_ADD_M, dec_add_m},
3054 {DEC_SUB_M, dec_sub_m},
3055 {DEC_AND_M, dec_and_m},
3056 {DEC_OR_M, dec_or_m},
3057 {DEC_MOVE_RM, dec_move_rm},
3058 {DEC_TEST_M, dec_test_m},
3059 {DEC_MOVE_MR, dec_move_mr},
3060
3061 {{0, 0}, dec_null}
3062 };
3063
3064 static unsigned int crisv32_decoder(CPUCRISState *env, DisasContext *dc)
3065 {
3066 int insn_len = 2;
3067 int i;
3068
3069 if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP | CPU_LOG_TB_OP_OPT))) {
3070 tcg_gen_debug_insn_start(dc->pc);
3071 }
3072
3073 /* Load a halfword onto the instruction register. */
3074 dc->ir = cris_fetch(env, dc, dc->pc, 2, 0);
3075
3076 /* Now decode it. */
3077 dc->opcode = EXTRACT_FIELD(dc->ir, 4, 11);
3078 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 3);
3079 dc->op2 = EXTRACT_FIELD(dc->ir, 12, 15);
3080 dc->zsize = EXTRACT_FIELD(dc->ir, 4, 4);
3081 dc->zzsize = EXTRACT_FIELD(dc->ir, 4, 5);
3082 dc->postinc = EXTRACT_FIELD(dc->ir, 10, 10);
3083
3084 /* Large switch for all insns. */
3085 for (i = 0; i < ARRAY_SIZE(decinfo); i++) {
3086 if ((dc->opcode & decinfo[i].mask) == decinfo[i].bits) {
3087 insn_len = decinfo[i].dec(env, dc);
3088 break;
3089 }
3090 }
3091
3092 #if !defined(CONFIG_USER_ONLY)
3093 /* Single-stepping ? */
3094 if (dc->tb_flags & S_FLAG) {
3095 int l1;
3096
3097 l1 = gen_new_label();
3098 tcg_gen_brcondi_tl(TCG_COND_NE, cpu_PR[PR_SPC], dc->pc, l1);
3099 /* We treat SPC as a break with an odd trap vector. */
3100 cris_evaluate_flags(dc);
3101 t_gen_mov_env_TN(trap_vector, tcg_const_tl(3));
3102 tcg_gen_movi_tl(env_pc, dc->pc + insn_len);
3103 tcg_gen_movi_tl(cpu_PR[PR_SPC], dc->pc + insn_len);
3104 t_gen_raise_exception(EXCP_BREAK);
3105 gen_set_label(l1);
3106 }
3107 #endif
3108 return insn_len;
3109 }
3110
3111 static void check_breakpoint(CPUCRISState *env, DisasContext *dc)
3112 {
3113 CPUBreakpoint *bp;
3114
3115 if (unlikely(!QTAILQ_EMPTY(&env->breakpoints))) {
3116 QTAILQ_FOREACH(bp, &env->breakpoints, entry) {
3117 if (bp->pc == dc->pc) {
3118 cris_evaluate_flags(dc);
3119 tcg_gen_movi_tl(env_pc, dc->pc);
3120 t_gen_raise_exception(EXCP_DEBUG);
3121 dc->is_jmp = DISAS_UPDATE;
3122 }
3123 }
3124 }
3125 }
3126
3127 #include "translate_v10.c"
3128
3129 /*
3130 * Delay slots on QEMU/CRIS.
3131 *
3132 * If an exception hits on a delayslot, the core will let ERP (the Exception
3133 * Return Pointer) point to the branch (the previous) insn and set the lsb to
3134 * to give SW a hint that the exception actually hit on the dslot.
3135 *
3136 * CRIS expects all PC addresses to be 16-bit aligned. The lsb is ignored by
3137 * the core and any jmp to an odd addresses will mask off that lsb. It is
3138 * simply there to let sw know there was an exception on a dslot.
3139 *
3140 * When the software returns from an exception, the branch will re-execute.
3141 * On QEMU care needs to be taken when a branch+delayslot sequence is broken
3142 * and the branch and delayslot dont share pages.
3143 *
3144 * The TB contaning the branch insn will set up env->btarget and evaluate
3145 * env->btaken. When the translation loop exits we will note that the branch
3146 * sequence is broken and let env->dslot be the size of the branch insn (those
3147 * vary in length).
3148 *
3149 * The TB contaning the delayslot will have the PC of its real insn (i.e no lsb
3150 * set). It will also expect to have env->dslot setup with the size of the
3151 * delay slot so that env->pc - env->dslot point to the branch insn. This TB
3152 * will execute the dslot and take the branch, either to btarget or just one
3153 * insn ahead.
3154 *
3155 * When exceptions occur, we check for env->dslot in do_interrupt to detect
3156 * broken branch sequences and setup $erp accordingly (i.e let it point to the
3157 * branch and set lsb). Then env->dslot gets cleared so that the exception
3158 * handler can enter. When returning from exceptions (jump $erp) the lsb gets
3159 * masked off and we will reexecute the branch insn.
3160 *
3161 */
3162
3163 /* generate intermediate code for basic block 'tb'. */
3164 static inline void
3165 gen_intermediate_code_internal(CRISCPU *cpu, TranslationBlock *tb,
3166 bool search_pc)
3167 {
3168 CPUState *cs = CPU(cpu);
3169 CPUCRISState *env = &cpu->env;
3170 uint16_t *gen_opc_end;
3171 uint32_t pc_start;
3172 unsigned int insn_len;
3173 int j, lj;
3174 struct DisasContext ctx;
3175 struct DisasContext *dc = &ctx;
3176 uint32_t next_page_start;
3177 target_ulong npc;
3178 int num_insns;
3179 int max_insns;
3180
3181 if (env->pregs[PR_VR] == 32) {
3182 dc->decoder = crisv32_decoder;
3183 dc->clear_locked_irq = 0;
3184 } else {
3185 dc->decoder = crisv10_decoder;
3186 dc->clear_locked_irq = 1;
3187 }
3188
3189 /* Odd PC indicates that branch is rexecuting due to exception in the
3190 * delayslot, like in real hw.
3191 */
3192 pc_start = tb->pc & ~1;
3193 dc->env = env;
3194 dc->tb = tb;
3195
3196 gen_opc_end = tcg_ctx.gen_opc_buf + OPC_MAX_SIZE;
3197
3198 dc->is_jmp = DISAS_NEXT;
3199 dc->ppc = pc_start;
3200 dc->pc = pc_start;
3201 dc->singlestep_enabled = cs->singlestep_enabled;
3202 dc->flags_uptodate = 1;
3203 dc->flagx_known = 1;
3204 dc->flags_x = tb->flags & X_FLAG;
3205 dc->cc_x_uptodate = 0;
3206 dc->cc_mask = 0;
3207 dc->update_cc = 0;
3208 dc->clear_prefix = 0;
3209
3210 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
3211 dc->cc_size_uptodate = -1;
3212
3213 /* Decode TB flags. */
3214 dc->tb_flags = tb->flags & (S_FLAG | P_FLAG | U_FLAG \
3215 | X_FLAG | PFIX_FLAG);
3216 dc->delayed_branch = !!(tb->flags & 7);
3217 if (dc->delayed_branch) {
3218 dc->jmp = JMP_INDIRECT;
3219 } else {
3220 dc->jmp = JMP_NOJMP;
3221 }
3222
3223 dc->cpustate_changed = 0;
3224
3225 if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
3226 qemu_log(
3227 "srch=%d pc=%x %x flg=%" PRIx64 " bt=%x ds=%u ccs=%x\n"
3228 "pid=%x usp=%x\n"
3229 "%x.%x.%x.%x\n"
3230 "%x.%x.%x.%x\n"
3231 "%x.%x.%x.%x\n"
3232 "%x.%x.%x.%x\n",
3233 search_pc, dc->pc, dc->ppc,
3234 (uint64_t)tb->flags,
3235 env->btarget, (unsigned)tb->flags & 7,
3236 env->pregs[PR_CCS],
3237 env->pregs[PR_PID], env->pregs[PR_USP],
3238 env->regs[0], env->regs[1], env->regs[2], env->regs[3],
3239 env->regs[4], env->regs[5], env->regs[6], env->regs[7],
3240 env->regs[8], env->regs[9],
3241 env->regs[10], env->regs[11],
3242 env->regs[12], env->regs[13],
3243 env->regs[14], env->regs[15]);
3244 qemu_log("--------------\n");
3245 qemu_log("IN: %s\n", lookup_symbol(pc_start));
3246 }
3247
3248 next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
3249 lj = -1;
3250 num_insns = 0;
3251 max_insns = tb->cflags & CF_COUNT_MASK;
3252 if (max_insns == 0) {
3253 max_insns = CF_COUNT_MASK;
3254 }
3255
3256 gen_tb_start();
3257 do {
3258 check_breakpoint(env, dc);
3259
3260 if (search_pc) {
3261 j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
3262 if (lj < j) {
3263 lj++;
3264 while (lj < j) {
3265 tcg_ctx.gen_opc_instr_start[lj++] = 0;
3266 }
3267 }
3268 if (dc->delayed_branch == 1) {
3269 tcg_ctx.gen_opc_pc[lj] = dc->ppc | 1;
3270 } else {
3271 tcg_ctx.gen_opc_pc[lj] = dc->pc;
3272 }
3273 tcg_ctx.gen_opc_instr_start[lj] = 1;
3274 tcg_ctx.gen_opc_icount[lj] = num_insns;
3275 }
3276
3277 /* Pretty disas. */
3278 LOG_DIS("%8.8x:\t", dc->pc);
3279
3280 if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO)) {
3281 gen_io_start();
3282 }
3283 dc->clear_x = 1;
3284
3285 insn_len = dc->decoder(env, dc);
3286 dc->ppc = dc->pc;
3287 dc->pc += insn_len;
3288 if (dc->clear_x) {
3289 cris_clear_x_flag(dc);
3290 }
3291
3292 num_insns++;
3293 /* Check for delayed branches here. If we do it before
3294 actually generating any host code, the simulator will just
3295 loop doing nothing for on this program location. */
3296 if (dc->delayed_branch) {
3297 dc->delayed_branch--;
3298 if (dc->delayed_branch == 0) {
3299 if (tb->flags & 7) {
3300 t_gen_mov_env_TN(dslot, tcg_const_tl(0));
3301 }
3302 if (dc->cpustate_changed || !dc->flagx_known
3303 || (dc->flags_x != (tb->flags & X_FLAG))) {
3304 cris_store_direct_jmp(dc);
3305 }
3306
3307 if (dc->clear_locked_irq) {
3308 dc->clear_locked_irq = 0;
3309 t_gen_mov_env_TN(locked_irq, tcg_const_tl(0));
3310 }
3311
3312 if (dc->jmp == JMP_DIRECT_CC) {
3313 int l1;
3314
3315 l1 = gen_new_label();
3316 cris_evaluate_flags(dc);
3317
3318 /* Conditional jmp. */
3319 tcg_gen_brcondi_tl(TCG_COND_EQ,
3320 env_btaken, 0, l1);
3321 gen_goto_tb(dc, 1, dc->jmp_pc);
3322 gen_set_label(l1);
3323 gen_goto_tb(dc, 0, dc->pc);
3324 dc->is_jmp = DISAS_TB_JUMP;
3325 dc->jmp = JMP_NOJMP;
3326 } else if (dc->jmp == JMP_DIRECT) {
3327 cris_evaluate_flags(dc);
3328 gen_goto_tb(dc, 0, dc->jmp_pc);
3329 dc->is_jmp = DISAS_TB_JUMP;
3330 dc->jmp = JMP_NOJMP;
3331 } else {
3332 t_gen_cc_jmp(env_btarget, tcg_const_tl(dc->pc));
3333 dc->is_jmp = DISAS_JUMP;
3334 }
3335 break;
3336 }
3337 }
3338
3339 /* If we are rexecuting a branch due to exceptions on
3340 delay slots dont break. */
3341 if (!(tb->pc & 1) && cs->singlestep_enabled) {
3342 break;
3343 }
3344 } while (!dc->is_jmp && !dc->cpustate_changed
3345 && tcg_ctx.gen_opc_ptr < gen_opc_end
3346 && !singlestep
3347 && (dc->pc < next_page_start)
3348 && num_insns < max_insns);
3349
3350 if (dc->clear_locked_irq) {
3351 t_gen_mov_env_TN(locked_irq, tcg_const_tl(0));
3352 }
3353
3354 npc = dc->pc;
3355
3356 if (tb->cflags & CF_LAST_IO)
3357 gen_io_end();
3358 /* Force an update if the per-tb cpu state has changed. */
3359 if (dc->is_jmp == DISAS_NEXT
3360 && (dc->cpustate_changed || !dc->flagx_known
3361 || (dc->flags_x != (tb->flags & X_FLAG)))) {
3362 dc->is_jmp = DISAS_UPDATE;
3363 tcg_gen_movi_tl(env_pc, npc);
3364 }
3365 /* Broken branch+delayslot sequence. */
3366 if (dc->delayed_branch == 1) {
3367 /* Set env->dslot to the size of the branch insn. */
3368 t_gen_mov_env_TN(dslot, tcg_const_tl(dc->pc - dc->ppc));
3369 cris_store_direct_jmp(dc);
3370 }
3371
3372 cris_evaluate_flags(dc);
3373
3374 if (unlikely(cs->singlestep_enabled)) {
3375 if (dc->is_jmp == DISAS_NEXT) {
3376 tcg_gen_movi_tl(env_pc, npc);
3377 }
3378 t_gen_raise_exception(EXCP_DEBUG);
3379 } else {
3380 switch (dc->is_jmp) {
3381 case DISAS_NEXT:
3382 gen_goto_tb(dc, 1, npc);
3383 break;
3384 default:
3385 case DISAS_JUMP:
3386 case DISAS_UPDATE:
3387 /* indicate that the hash table must be used
3388 to find the next TB */
3389 tcg_gen_exit_tb(0);
3390 break;
3391 case DISAS_SWI:
3392 case DISAS_TB_JUMP:
3393 /* nothing more to generate */
3394 break;
3395 }
3396 }
3397 gen_tb_end(tb, num_insns);
3398 *tcg_ctx.gen_opc_ptr = INDEX_op_end;
3399 if (search_pc) {
3400 j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
3401 lj++;
3402 while (lj <= j) {
3403 tcg_ctx.gen_opc_instr_start[lj++] = 0;
3404 }
3405 } else {
3406 tb->size = dc->pc - pc_start;
3407 tb->icount = num_insns;
3408 }
3409
3410 #ifdef DEBUG_DISAS
3411 #if !DISAS_CRIS
3412 if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
3413 log_target_disas(env, pc_start, dc->pc - pc_start,
3414 dc->env->pregs[PR_VR]);
3415 qemu_log("\nisize=%d osize=%td\n",
3416 dc->pc - pc_start, tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf);
3417 }
3418 #endif
3419 #endif
3420 }
3421
3422 void gen_intermediate_code (CPUCRISState *env, struct TranslationBlock *tb)
3423 {
3424 gen_intermediate_code_internal(cris_env_get_cpu(env), tb, false);
3425 }
3426
3427 void gen_intermediate_code_pc (CPUCRISState *env, struct TranslationBlock *tb)
3428 {
3429 gen_intermediate_code_internal(cris_env_get_cpu(env), tb, true);
3430 }
3431
3432 void cris_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf,
3433 int flags)
3434 {
3435 CRISCPU *cpu = CRIS_CPU(cs);
3436 CPUCRISState *env = &cpu->env;
3437 int i;
3438 uint32_t srs;
3439
3440 if (!env || !f) {
3441 return;
3442 }
3443
3444 cpu_fprintf(f, "PC=%x CCS=%x btaken=%d btarget=%x\n"
3445 "cc_op=%d cc_src=%d cc_dest=%d cc_result=%x cc_mask=%x\n",
3446 env->pc, env->pregs[PR_CCS], env->btaken, env->btarget,
3447 env->cc_op,
3448 env->cc_src, env->cc_dest, env->cc_result, env->cc_mask);
3449
3450
3451 for (i = 0; i < 16; i++) {
3452 cpu_fprintf(f, "%s=%8.8x ", regnames[i], env->regs[i]);
3453 if ((i + 1) % 4 == 0) {
3454 cpu_fprintf(f, "\n");
3455 }
3456 }
3457 cpu_fprintf(f, "\nspecial regs:\n");
3458 for (i = 0; i < 16; i++) {
3459 cpu_fprintf(f, "%s=%8.8x ", pregnames[i], env->pregs[i]);
3460 if ((i + 1) % 4 == 0) {
3461 cpu_fprintf(f, "\n");
3462 }
3463 }
3464 srs = env->pregs[PR_SRS];
3465 cpu_fprintf(f, "\nsupport function regs bank %x:\n", srs);
3466 if (srs < ARRAY_SIZE(env->sregs)) {
3467 for (i = 0; i < 16; i++) {
3468 cpu_fprintf(f, "s%2.2d=%8.8x ",
3469 i, env->sregs[srs][i]);
3470 if ((i + 1) % 4 == 0) {
3471 cpu_fprintf(f, "\n");
3472 }
3473 }
3474 }
3475 cpu_fprintf(f, "\n\n");
3476
3477 }
3478
3479 void cris_initialize_tcg(void)
3480 {
3481 int i;
3482
3483 cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
3484 cc_x = tcg_global_mem_new(TCG_AREG0,
3485 offsetof(CPUCRISState, cc_x), "cc_x");
3486 cc_src = tcg_global_mem_new(TCG_AREG0,
3487 offsetof(CPUCRISState, cc_src), "cc_src");
3488 cc_dest = tcg_global_mem_new(TCG_AREG0,
3489 offsetof(CPUCRISState, cc_dest),
3490 "cc_dest");
3491 cc_result = tcg_global_mem_new(TCG_AREG0,
3492 offsetof(CPUCRISState, cc_result),
3493 "cc_result");
3494 cc_op = tcg_global_mem_new(TCG_AREG0,
3495 offsetof(CPUCRISState, cc_op), "cc_op");
3496 cc_size = tcg_global_mem_new(TCG_AREG0,
3497 offsetof(CPUCRISState, cc_size),
3498 "cc_size");
3499 cc_mask = tcg_global_mem_new(TCG_AREG0,
3500 offsetof(CPUCRISState, cc_mask),
3501 "cc_mask");
3502
3503 env_pc = tcg_global_mem_new(TCG_AREG0,
3504 offsetof(CPUCRISState, pc),
3505 "pc");
3506 env_btarget = tcg_global_mem_new(TCG_AREG0,
3507 offsetof(CPUCRISState, btarget),
3508 "btarget");
3509 env_btaken = tcg_global_mem_new(TCG_AREG0,
3510 offsetof(CPUCRISState, btaken),
3511 "btaken");
3512 for (i = 0; i < 16; i++) {
3513 cpu_R[i] = tcg_global_mem_new(TCG_AREG0,
3514 offsetof(CPUCRISState, regs[i]),
3515 regnames[i]);
3516 }
3517 for (i = 0; i < 16; i++) {
3518 cpu_PR[i] = tcg_global_mem_new(TCG_AREG0,
3519 offsetof(CPUCRISState, pregs[i]),
3520 pregnames[i]);
3521 }
3522 }
3523
3524 void restore_state_to_opc(CPUCRISState *env, TranslationBlock *tb, int pc_pos)
3525 {
3526 env->pc = tcg_ctx.gen_opc_pc[pc_pos];
3527 }
Qemu copy for testing