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target-arm: A64: Add floating-point<->integer conversion instructions
[qemu.git] / target-cris / translate.c
blobf990d591c765a4430363ea35df8c9c9393695b23
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_ld_i64(dst, addr, mem_index, MO_TEQ);
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 tcg_gen_qemu_ld_tl(dst, addr, mem_index,
1151 MO_TE + ctz32(size) + (sign ? MO_SIGN : 0));
1152 }
1153
1154 static void gen_store (DisasContext *dc, TCGv addr, TCGv val,
1155 unsigned int size)
1156 {
1157 int mem_index = cpu_mmu_index(dc->env);
1158
1159 /* If we get a fault on a delayslot we must keep the jmp state in
1160 the cpu-state to be able to re-execute the jmp. */
1161 if (dc->delayed_branch == 1) {
1162 cris_store_direct_jmp(dc);
1163 }
1164
1165
1166 /* Conditional writes. We only support the kind were X and P are known
1167 at translation time. */
1168 if (dc->flagx_known && dc->flags_x && (dc->tb_flags & P_FLAG)) {
1169 dc->postinc = 0;
1170 cris_evaluate_flags(dc);
1171 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], C_FLAG);
1172 return;
1173 }
1174
1175 tcg_gen_qemu_st_tl(val, addr, mem_index, MO_TE + ctz32(size));
1176
1177 if (dc->flagx_known && dc->flags_x) {
1178 cris_evaluate_flags(dc);
1179 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~C_FLAG);
1180 }
1181 }
1182
1183 static inline void t_gen_sext(TCGv d, TCGv s, int size)
1184 {
1185 if (size == 1) {
1186 tcg_gen_ext8s_i32(d, s);
1187 } else if (size == 2) {
1188 tcg_gen_ext16s_i32(d, s);
1189 } else if (!TCGV_EQUAL(d, s)) {
1190 tcg_gen_mov_tl(d, s);
1191 }
1192 }
1193
1194 static inline void t_gen_zext(TCGv d, TCGv s, int size)
1195 {
1196 if (size == 1) {
1197 tcg_gen_ext8u_i32(d, s);
1198 } else if (size == 2) {
1199 tcg_gen_ext16u_i32(d, s);
1200 } else if (!TCGV_EQUAL(d, s)) {
1201 tcg_gen_mov_tl(d, s);
1202 }
1203 }
1204
1205 #if DISAS_CRIS
1206 static char memsize_char(int size)
1207 {
1208 switch (size) {
1209 case 1: return 'b'; break;
1210 case 2: return 'w'; break;
1211 case 4: return 'd'; break;
1212 default:
1213 return 'x';
1214 break;
1215 }
1216 }
1217 #endif
1218
1219 static inline unsigned int memsize_z(DisasContext *dc)
1220 {
1221 return dc->zsize + 1;
1222 }
1223
1224 static inline unsigned int memsize_zz(DisasContext *dc)
1225 {
1226 switch (dc->zzsize) {
1227 case 0: return 1;
1228 case 1: return 2;
1229 default:
1230 return 4;
1231 }
1232 }
1233
1234 static inline void do_postinc (DisasContext *dc, int size)
1235 {
1236 if (dc->postinc) {
1237 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], size);
1238 }
1239 }
1240
1241 static inline void dec_prep_move_r(DisasContext *dc, int rs, int rd,
1242 int size, int s_ext, TCGv dst)
1243 {
1244 if (s_ext) {
1245 t_gen_sext(dst, cpu_R[rs], size);
1246 } else {
1247 t_gen_zext(dst, cpu_R[rs], size);
1248 }
1249 }
1250
1251 /* Prepare T0 and T1 for a register alu operation.
1252 s_ext decides if the operand1 should be sign-extended or zero-extended when
1253 needed. */
1254 static void dec_prep_alu_r(DisasContext *dc, int rs, int rd,
1255 int size, int s_ext, TCGv dst, TCGv src)
1256 {
1257 dec_prep_move_r(dc, rs, rd, size, s_ext, src);
1258
1259 if (s_ext) {
1260 t_gen_sext(dst, cpu_R[rd], size);
1261 } else {
1262 t_gen_zext(dst, cpu_R[rd], size);
1263 }
1264 }
1265
1266 static int dec_prep_move_m(CPUCRISState *env, DisasContext *dc,
1267 int s_ext, int memsize, TCGv dst)
1268 {
1269 unsigned int rs;
1270 uint32_t imm;
1271 int is_imm;
1272 int insn_len = 2;
1273
1274 rs = dc->op1;
1275 is_imm = rs == 15 && dc->postinc;
1276
1277 /* Load [$rs] onto T1. */
1278 if (is_imm) {
1279 insn_len = 2 + memsize;
1280 if (memsize == 1) {
1281 insn_len++;
1282 }
1283
1284 imm = cris_fetch(env, dc, dc->pc + 2, memsize, s_ext);
1285 tcg_gen_movi_tl(dst, imm);
1286 dc->postinc = 0;
1287 } else {
1288 cris_flush_cc_state(dc);
1289 gen_load(dc, dst, cpu_R[rs], memsize, 0);
1290 if (s_ext) {
1291 t_gen_sext(dst, dst, memsize);
1292 } else {
1293 t_gen_zext(dst, dst, memsize);
1294 }
1295 }
1296 return insn_len;
1297 }
1298
1299 /* Prepare T0 and T1 for a memory + alu operation.
1300 s_ext decides if the operand1 should be sign-extended or zero-extended when
1301 needed. */
1302 static int dec_prep_alu_m(CPUCRISState *env, DisasContext *dc,
1303 int s_ext, int memsize, TCGv dst, TCGv src)
1304 {
1305 int insn_len;
1306
1307 insn_len = dec_prep_move_m(env, dc, s_ext, memsize, src);
1308 tcg_gen_mov_tl(dst, cpu_R[dc->op2]);
1309 return insn_len;
1310 }
1311
1312 #if DISAS_CRIS
1313 static const char *cc_name(int cc)
1314 {
1315 static const char *cc_names[16] = {
1316 "cc", "cs", "ne", "eq", "vc", "vs", "pl", "mi",
1317 "ls", "hi", "ge", "lt", "gt", "le", "a", "p"
1318 };
1319 assert(cc < 16);
1320 return cc_names[cc];
1321 }
1322 #endif
1323
1324 /* Start of insn decoders. */
1325
1326 static int dec_bccq(CPUCRISState *env, DisasContext *dc)
1327 {
1328 int32_t offset;
1329 int sign;
1330 uint32_t cond = dc->op2;
1331
1332 offset = EXTRACT_FIELD(dc->ir, 1, 7);
1333 sign = EXTRACT_FIELD(dc->ir, 0, 0);
1334
1335 offset *= 2;
1336 offset |= sign << 8;
1337 offset = sign_extend(offset, 8);
1338
1339 LOG_DIS("b%s %x\n", cc_name(cond), dc->pc + offset);
1340
1341 /* op2 holds the condition-code. */
1342 cris_cc_mask(dc, 0);
1343 cris_prepare_cc_branch(dc, offset, cond);
1344 return 2;
1345 }
1346 static int dec_addoq(CPUCRISState *env, DisasContext *dc)
1347 {
1348 int32_t imm;
1349
1350 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 7);
1351 imm = sign_extend(dc->op1, 7);
1352
1353 LOG_DIS("addoq %d, $r%u\n", imm, dc->op2);
1354 cris_cc_mask(dc, 0);
1355 /* Fetch register operand, */
1356 tcg_gen_addi_tl(cpu_R[R_ACR], cpu_R[dc->op2], imm);
1357
1358 return 2;
1359 }
1360 static int dec_addq(CPUCRISState *env, DisasContext *dc)
1361 {
1362 LOG_DIS("addq %u, $r%u\n", dc->op1, dc->op2);
1363
1364 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1365
1366 cris_cc_mask(dc, CC_MASK_NZVC);
1367
1368 cris_alu(dc, CC_OP_ADD,
1369 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
1370 return 2;
1371 }
1372 static int dec_moveq(CPUCRISState *env, DisasContext *dc)
1373 {
1374 uint32_t imm;
1375
1376 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1377 imm = sign_extend(dc->op1, 5);
1378 LOG_DIS("moveq %d, $r%u\n", imm, dc->op2);
1379
1380 tcg_gen_movi_tl(cpu_R[dc->op2], imm);
1381 return 2;
1382 }
1383 static int dec_subq(CPUCRISState *env, DisasContext *dc)
1384 {
1385 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1386
1387 LOG_DIS("subq %u, $r%u\n", dc->op1, dc->op2);
1388
1389 cris_cc_mask(dc, CC_MASK_NZVC);
1390 cris_alu(dc, CC_OP_SUB,
1391 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
1392 return 2;
1393 }
1394 static int dec_cmpq(CPUCRISState *env, DisasContext *dc)
1395 {
1396 uint32_t imm;
1397 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1398 imm = sign_extend(dc->op1, 5);
1399
1400 LOG_DIS("cmpq %d, $r%d\n", imm, dc->op2);
1401 cris_cc_mask(dc, CC_MASK_NZVC);
1402
1403 cris_alu(dc, CC_OP_CMP,
1404 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
1405 return 2;
1406 }
1407 static int dec_andq(CPUCRISState *env, DisasContext *dc)
1408 {
1409 uint32_t imm;
1410 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1411 imm = sign_extend(dc->op1, 5);
1412
1413 LOG_DIS("andq %d, $r%d\n", imm, dc->op2);
1414 cris_cc_mask(dc, CC_MASK_NZ);
1415
1416 cris_alu(dc, CC_OP_AND,
1417 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
1418 return 2;
1419 }
1420 static int dec_orq(CPUCRISState *env, DisasContext *dc)
1421 {
1422 uint32_t imm;
1423 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1424 imm = sign_extend(dc->op1, 5);
1425 LOG_DIS("orq %d, $r%d\n", imm, dc->op2);
1426 cris_cc_mask(dc, CC_MASK_NZ);
1427
1428 cris_alu(dc, CC_OP_OR,
1429 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
1430 return 2;
1431 }
1432 static int dec_btstq(CPUCRISState *env, DisasContext *dc)
1433 {
1434 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1435 LOG_DIS("btstq %u, $r%d\n", dc->op1, dc->op2);
1436
1437 cris_cc_mask(dc, CC_MASK_NZ);
1438 cris_evaluate_flags(dc);
1439 gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->op2],
1440 tcg_const_tl(dc->op1), cpu_PR[PR_CCS]);
1441 cris_alu(dc, CC_OP_MOVE,
1442 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op2], 4);
1443 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
1444 dc->flags_uptodate = 1;
1445 return 2;
1446 }
1447 static int dec_asrq(CPUCRISState *env, DisasContext *dc)
1448 {
1449 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1450 LOG_DIS("asrq %u, $r%d\n", dc->op1, dc->op2);
1451 cris_cc_mask(dc, CC_MASK_NZ);
1452
1453 tcg_gen_sari_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1);
1454 cris_alu(dc, CC_OP_MOVE,
1455 cpu_R[dc->op2],
1456 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1457 return 2;
1458 }
1459 static int dec_lslq(CPUCRISState *env, DisasContext *dc)
1460 {
1461 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1462 LOG_DIS("lslq %u, $r%d\n", dc->op1, dc->op2);
1463
1464 cris_cc_mask(dc, CC_MASK_NZ);
1465
1466 tcg_gen_shli_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1);
1467
1468 cris_alu(dc, CC_OP_MOVE,
1469 cpu_R[dc->op2],
1470 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1471 return 2;
1472 }
1473 static int dec_lsrq(CPUCRISState *env, DisasContext *dc)
1474 {
1475 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1476 LOG_DIS("lsrq %u, $r%d\n", dc->op1, dc->op2);
1477
1478 cris_cc_mask(dc, CC_MASK_NZ);
1479
1480 tcg_gen_shri_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1);
1481 cris_alu(dc, CC_OP_MOVE,
1482 cpu_R[dc->op2],
1483 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1484 return 2;
1485 }
1486
1487 static int dec_move_r(CPUCRISState *env, DisasContext *dc)
1488 {
1489 int size = memsize_zz(dc);
1490
1491 LOG_DIS("move.%c $r%u, $r%u\n",
1492 memsize_char(size), dc->op1, dc->op2);
1493
1494 cris_cc_mask(dc, CC_MASK_NZ);
1495 if (size == 4) {
1496 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, cpu_R[dc->op2]);
1497 cris_cc_mask(dc, CC_MASK_NZ);
1498 cris_update_cc_op(dc, CC_OP_MOVE, 4);
1499 cris_update_cc_x(dc);
1500 cris_update_result(dc, cpu_R[dc->op2]);
1501 } else {
1502 TCGv t0;
1503
1504 t0 = tcg_temp_new();
1505 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0);
1506 cris_alu(dc, CC_OP_MOVE,
1507 cpu_R[dc->op2],
1508 cpu_R[dc->op2], t0, size);
1509 tcg_temp_free(t0);
1510 }
1511 return 2;
1512 }
1513
1514 static int dec_scc_r(CPUCRISState *env, DisasContext *dc)
1515 {
1516 int cond = dc->op2;
1517
1518 LOG_DIS("s%s $r%u\n",
1519 cc_name(cond), dc->op1);
1520
1521 if (cond != CC_A) {
1522 int l1;
1523
1524 gen_tst_cc(dc, cpu_R[dc->op1], cond);
1525 l1 = gen_new_label();
1526 tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_R[dc->op1], 0, l1);
1527 tcg_gen_movi_tl(cpu_R[dc->op1], 1);
1528 gen_set_label(l1);
1529 } else {
1530 tcg_gen_movi_tl(cpu_R[dc->op1], 1);
1531 }
1532
1533 cris_cc_mask(dc, 0);
1534 return 2;
1535 }
1536
1537 static inline void cris_alu_alloc_temps(DisasContext *dc, int size, TCGv *t)
1538 {
1539 if (size == 4) {
1540 t[0] = cpu_R[dc->op2];
1541 t[1] = cpu_R[dc->op1];
1542 } else {
1543 t[0] = tcg_temp_new();
1544 t[1] = tcg_temp_new();
1545 }
1546 }
1547
1548 static inline void cris_alu_free_temps(DisasContext *dc, int size, TCGv *t)
1549 {
1550 if (size != 4) {
1551 tcg_temp_free(t[0]);
1552 tcg_temp_free(t[1]);
1553 }
1554 }
1555
1556 static int dec_and_r(CPUCRISState *env, DisasContext *dc)
1557 {
1558 TCGv t[2];
1559 int size = memsize_zz(dc);
1560
1561 LOG_DIS("and.%c $r%u, $r%u\n",
1562 memsize_char(size), dc->op1, dc->op2);
1563
1564 cris_cc_mask(dc, CC_MASK_NZ);
1565
1566 cris_alu_alloc_temps(dc, size, t);
1567 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1568 cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], size);
1569 cris_alu_free_temps(dc, size, t);
1570 return 2;
1571 }
1572
1573 static int dec_lz_r(CPUCRISState *env, DisasContext *dc)
1574 {
1575 TCGv t0;
1576 LOG_DIS("lz $r%u, $r%u\n",
1577 dc->op1, dc->op2);
1578 cris_cc_mask(dc, CC_MASK_NZ);
1579 t0 = tcg_temp_new();
1580 dec_prep_alu_r(dc, dc->op1, dc->op2, 4, 0, cpu_R[dc->op2], t0);
1581 cris_alu(dc, CC_OP_LZ, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1582 tcg_temp_free(t0);
1583 return 2;
1584 }
1585
1586 static int dec_lsl_r(CPUCRISState *env, DisasContext *dc)
1587 {
1588 TCGv t[2];
1589 int size = memsize_zz(dc);
1590
1591 LOG_DIS("lsl.%c $r%u, $r%u\n",
1592 memsize_char(size), dc->op1, dc->op2);
1593
1594 cris_cc_mask(dc, CC_MASK_NZ);
1595 cris_alu_alloc_temps(dc, size, t);
1596 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1597 tcg_gen_andi_tl(t[1], t[1], 63);
1598 cris_alu(dc, CC_OP_LSL, cpu_R[dc->op2], t[0], t[1], size);
1599 cris_alu_alloc_temps(dc, size, t);
1600 return 2;
1601 }
1602
1603 static int dec_lsr_r(CPUCRISState *env, DisasContext *dc)
1604 {
1605 TCGv t[2];
1606 int size = memsize_zz(dc);
1607
1608 LOG_DIS("lsr.%c $r%u, $r%u\n",
1609 memsize_char(size), dc->op1, dc->op2);
1610
1611 cris_cc_mask(dc, CC_MASK_NZ);
1612 cris_alu_alloc_temps(dc, size, t);
1613 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1614 tcg_gen_andi_tl(t[1], t[1], 63);
1615 cris_alu(dc, CC_OP_LSR, cpu_R[dc->op2], t[0], t[1], size);
1616 cris_alu_free_temps(dc, size, t);
1617 return 2;
1618 }
1619
1620 static int dec_asr_r(CPUCRISState *env, DisasContext *dc)
1621 {
1622 TCGv t[2];
1623 int size = memsize_zz(dc);
1624
1625 LOG_DIS("asr.%c $r%u, $r%u\n",
1626 memsize_char(size), dc->op1, dc->op2);
1627
1628 cris_cc_mask(dc, CC_MASK_NZ);
1629 cris_alu_alloc_temps(dc, size, t);
1630 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]);
1631 tcg_gen_andi_tl(t[1], t[1], 63);
1632 cris_alu(dc, CC_OP_ASR, cpu_R[dc->op2], t[0], t[1], size);
1633 cris_alu_free_temps(dc, size, t);
1634 return 2;
1635 }
1636
1637 static int dec_muls_r(CPUCRISState *env, DisasContext *dc)
1638 {
1639 TCGv t[2];
1640 int size = memsize_zz(dc);
1641
1642 LOG_DIS("muls.%c $r%u, $r%u\n",
1643 memsize_char(size), dc->op1, dc->op2);
1644 cris_cc_mask(dc, CC_MASK_NZV);
1645 cris_alu_alloc_temps(dc, size, t);
1646 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]);
1647
1648 cris_alu(dc, CC_OP_MULS, cpu_R[dc->op2], t[0], t[1], 4);
1649 cris_alu_free_temps(dc, size, t);
1650 return 2;
1651 }
1652
1653 static int dec_mulu_r(CPUCRISState *env, DisasContext *dc)
1654 {
1655 TCGv t[2];
1656 int size = memsize_zz(dc);
1657
1658 LOG_DIS("mulu.%c $r%u, $r%u\n",
1659 memsize_char(size), dc->op1, dc->op2);
1660 cris_cc_mask(dc, CC_MASK_NZV);
1661 cris_alu_alloc_temps(dc, size, t);
1662 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1663
1664 cris_alu(dc, CC_OP_MULU, cpu_R[dc->op2], t[0], t[1], 4);
1665 cris_alu_alloc_temps(dc, size, t);
1666 return 2;
1667 }
1668
1669
1670 static int dec_dstep_r(CPUCRISState *env, DisasContext *dc)
1671 {
1672 LOG_DIS("dstep $r%u, $r%u\n", dc->op1, dc->op2);
1673 cris_cc_mask(dc, CC_MASK_NZ);
1674 cris_alu(dc, CC_OP_DSTEP,
1675 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4);
1676 return 2;
1677 }
1678
1679 static int dec_xor_r(CPUCRISState *env, DisasContext *dc)
1680 {
1681 TCGv t[2];
1682 int size = memsize_zz(dc);
1683 LOG_DIS("xor.%c $r%u, $r%u\n",
1684 memsize_char(size), dc->op1, dc->op2);
1685 BUG_ON(size != 4); /* xor is dword. */
1686 cris_cc_mask(dc, CC_MASK_NZ);
1687 cris_alu_alloc_temps(dc, size, t);
1688 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1689
1690 cris_alu(dc, CC_OP_XOR, cpu_R[dc->op2], t[0], t[1], 4);
1691 cris_alu_free_temps(dc, size, t);
1692 return 2;
1693 }
1694
1695 static int dec_bound_r(CPUCRISState *env, DisasContext *dc)
1696 {
1697 TCGv l0;
1698 int size = memsize_zz(dc);
1699 LOG_DIS("bound.%c $r%u, $r%u\n",
1700 memsize_char(size), dc->op1, dc->op2);
1701 cris_cc_mask(dc, CC_MASK_NZ);
1702 l0 = tcg_temp_local_new();
1703 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, l0);
1704 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], cpu_R[dc->op2], l0, 4);
1705 tcg_temp_free(l0);
1706 return 2;
1707 }
1708
1709 static int dec_cmp_r(CPUCRISState *env, DisasContext *dc)
1710 {
1711 TCGv t[2];
1712 int size = memsize_zz(dc);
1713 LOG_DIS("cmp.%c $r%u, $r%u\n",
1714 memsize_char(size), dc->op1, dc->op2);
1715 cris_cc_mask(dc, CC_MASK_NZVC);
1716 cris_alu_alloc_temps(dc, size, t);
1717 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1718
1719 cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], t[0], t[1], size);
1720 cris_alu_free_temps(dc, size, t);
1721 return 2;
1722 }
1723
1724 static int dec_abs_r(CPUCRISState *env, DisasContext *dc)
1725 {
1726 TCGv t0;
1727
1728 LOG_DIS("abs $r%u, $r%u\n",
1729 dc->op1, dc->op2);
1730 cris_cc_mask(dc, CC_MASK_NZ);
1731
1732 t0 = tcg_temp_new();
1733 tcg_gen_sari_tl(t0, cpu_R[dc->op1], 31);
1734 tcg_gen_xor_tl(cpu_R[dc->op2], cpu_R[dc->op1], t0);
1735 tcg_gen_sub_tl(cpu_R[dc->op2], cpu_R[dc->op2], t0);
1736 tcg_temp_free(t0);
1737
1738 cris_alu(dc, CC_OP_MOVE,
1739 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op2], 4);
1740 return 2;
1741 }
1742
1743 static int dec_add_r(CPUCRISState *env, DisasContext *dc)
1744 {
1745 TCGv t[2];
1746 int size = memsize_zz(dc);
1747 LOG_DIS("add.%c $r%u, $r%u\n",
1748 memsize_char(size), dc->op1, dc->op2);
1749 cris_cc_mask(dc, CC_MASK_NZVC);
1750 cris_alu_alloc_temps(dc, size, t);
1751 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1752
1753 cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], t[0], t[1], size);
1754 cris_alu_free_temps(dc, size, t);
1755 return 2;
1756 }
1757
1758 static int dec_addc_r(CPUCRISState *env, DisasContext *dc)
1759 {
1760 LOG_DIS("addc $r%u, $r%u\n",
1761 dc->op1, dc->op2);
1762 cris_evaluate_flags(dc);
1763 /* Set for this insn. */
1764 dc->flagx_known = 1;
1765 dc->flags_x = X_FLAG;
1766
1767 cris_cc_mask(dc, CC_MASK_NZVC);
1768 cris_alu(dc, CC_OP_ADDC,
1769 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4);
1770 return 2;
1771 }
1772
1773 static int dec_mcp_r(CPUCRISState *env, DisasContext *dc)
1774 {
1775 LOG_DIS("mcp $p%u, $r%u\n",
1776 dc->op2, dc->op1);
1777 cris_evaluate_flags(dc);
1778 cris_cc_mask(dc, CC_MASK_RNZV);
1779 cris_alu(dc, CC_OP_MCP,
1780 cpu_R[dc->op1], cpu_R[dc->op1], cpu_PR[dc->op2], 4);
1781 return 2;
1782 }
1783
1784 #if DISAS_CRIS
1785 static char * swapmode_name(int mode, char *modename) {
1786 int i = 0;
1787 if (mode & 8) {
1788 modename[i++] = 'n';
1789 }
1790 if (mode & 4) {
1791 modename[i++] = 'w';
1792 }
1793 if (mode & 2) {
1794 modename[i++] = 'b';
1795 }
1796 if (mode & 1) {
1797 modename[i++] = 'r';
1798 }
1799 modename[i++] = 0;
1800 return modename;
1801 }
1802 #endif
1803
1804 static int dec_swap_r(CPUCRISState *env, DisasContext *dc)
1805 {
1806 TCGv t0;
1807 #if DISAS_CRIS
1808 char modename[4];
1809 #endif
1810 LOG_DIS("swap%s $r%u\n",
1811 swapmode_name(dc->op2, modename), dc->op1);
1812
1813 cris_cc_mask(dc, CC_MASK_NZ);
1814 t0 = tcg_temp_new();
1815 t_gen_mov_TN_reg(t0, dc->op1);
1816 if (dc->op2 & 8) {
1817 tcg_gen_not_tl(t0, t0);
1818 }
1819 if (dc->op2 & 4) {
1820 t_gen_swapw(t0, t0);
1821 }
1822 if (dc->op2 & 2) {
1823 t_gen_swapb(t0, t0);
1824 }
1825 if (dc->op2 & 1) {
1826 t_gen_swapr(t0, t0);
1827 }
1828 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op1], cpu_R[dc->op1], t0, 4);
1829 tcg_temp_free(t0);
1830 return 2;
1831 }
1832
1833 static int dec_or_r(CPUCRISState *env, DisasContext *dc)
1834 {
1835 TCGv t[2];
1836 int size = memsize_zz(dc);
1837 LOG_DIS("or.%c $r%u, $r%u\n",
1838 memsize_char(size), dc->op1, dc->op2);
1839 cris_cc_mask(dc, CC_MASK_NZ);
1840 cris_alu_alloc_temps(dc, size, t);
1841 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1842 cris_alu(dc, CC_OP_OR, cpu_R[dc->op2], t[0], t[1], size);
1843 cris_alu_free_temps(dc, size, t);
1844 return 2;
1845 }
1846
1847 static int dec_addi_r(CPUCRISState *env, DisasContext *dc)
1848 {
1849 TCGv t0;
1850 LOG_DIS("addi.%c $r%u, $r%u\n",
1851 memsize_char(memsize_zz(dc)), dc->op2, dc->op1);
1852 cris_cc_mask(dc, 0);
1853 t0 = tcg_temp_new();
1854 tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize));
1855 tcg_gen_add_tl(cpu_R[dc->op1], cpu_R[dc->op1], t0);
1856 tcg_temp_free(t0);
1857 return 2;
1858 }
1859
1860 static int dec_addi_acr(CPUCRISState *env, DisasContext *dc)
1861 {
1862 TCGv t0;
1863 LOG_DIS("addi.%c $r%u, $r%u, $acr\n",
1864 memsize_char(memsize_zz(dc)), dc->op2, dc->op1);
1865 cris_cc_mask(dc, 0);
1866 t0 = tcg_temp_new();
1867 tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize));
1868 tcg_gen_add_tl(cpu_R[R_ACR], cpu_R[dc->op1], t0);
1869 tcg_temp_free(t0);
1870 return 2;
1871 }
1872
1873 static int dec_neg_r(CPUCRISState *env, DisasContext *dc)
1874 {
1875 TCGv t[2];
1876 int size = memsize_zz(dc);
1877 LOG_DIS("neg.%c $r%u, $r%u\n",
1878 memsize_char(size), dc->op1, dc->op2);
1879 cris_cc_mask(dc, CC_MASK_NZVC);
1880 cris_alu_alloc_temps(dc, size, t);
1881 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1882
1883 cris_alu(dc, CC_OP_NEG, cpu_R[dc->op2], t[0], t[1], size);
1884 cris_alu_free_temps(dc, size, t);
1885 return 2;
1886 }
1887
1888 static int dec_btst_r(CPUCRISState *env, DisasContext *dc)
1889 {
1890 LOG_DIS("btst $r%u, $r%u\n",
1891 dc->op1, dc->op2);
1892 cris_cc_mask(dc, CC_MASK_NZ);
1893 cris_evaluate_flags(dc);
1894 gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->op2],
1895 cpu_R[dc->op1], cpu_PR[PR_CCS]);
1896 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2],
1897 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1898 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
1899 dc->flags_uptodate = 1;
1900 return 2;
1901 }
1902
1903 static int dec_sub_r(CPUCRISState *env, DisasContext *dc)
1904 {
1905 TCGv t[2];
1906 int size = memsize_zz(dc);
1907 LOG_DIS("sub.%c $r%u, $r%u\n",
1908 memsize_char(size), dc->op1, dc->op2);
1909 cris_cc_mask(dc, CC_MASK_NZVC);
1910 cris_alu_alloc_temps(dc, size, t);
1911 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1912 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], size);
1913 cris_alu_free_temps(dc, size, t);
1914 return 2;
1915 }
1916
1917 /* Zero extension. From size to dword. */
1918 static int dec_movu_r(CPUCRISState *env, DisasContext *dc)
1919 {
1920 TCGv t0;
1921 int size = memsize_z(dc);
1922 LOG_DIS("movu.%c $r%u, $r%u\n",
1923 memsize_char(size),
1924 dc->op1, dc->op2);
1925
1926 cris_cc_mask(dc, CC_MASK_NZ);
1927 t0 = tcg_temp_new();
1928 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0);
1929 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1930 tcg_temp_free(t0);
1931 return 2;
1932 }
1933
1934 /* Sign extension. From size to dword. */
1935 static int dec_movs_r(CPUCRISState *env, DisasContext *dc)
1936 {
1937 TCGv t0;
1938 int size = memsize_z(dc);
1939 LOG_DIS("movs.%c $r%u, $r%u\n",
1940 memsize_char(size),
1941 dc->op1, dc->op2);
1942
1943 cris_cc_mask(dc, CC_MASK_NZ);
1944 t0 = tcg_temp_new();
1945 /* Size can only be qi or hi. */
1946 t_gen_sext(t0, cpu_R[dc->op1], size);
1947 cris_alu(dc, CC_OP_MOVE,
1948 cpu_R[dc->op2], cpu_R[dc->op1], t0, 4);
1949 tcg_temp_free(t0);
1950 return 2;
1951 }
1952
1953 /* zero extension. From size to dword. */
1954 static int dec_addu_r(CPUCRISState *env, DisasContext *dc)
1955 {
1956 TCGv t0;
1957 int size = memsize_z(dc);
1958 LOG_DIS("addu.%c $r%u, $r%u\n",
1959 memsize_char(size),
1960 dc->op1, dc->op2);
1961
1962 cris_cc_mask(dc, CC_MASK_NZVC);
1963 t0 = tcg_temp_new();
1964 /* Size can only be qi or hi. */
1965 t_gen_zext(t0, cpu_R[dc->op1], size);
1966 cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1967 tcg_temp_free(t0);
1968 return 2;
1969 }
1970
1971 /* Sign extension. From size to dword. */
1972 static int dec_adds_r(CPUCRISState *env, DisasContext *dc)
1973 {
1974 TCGv t0;
1975 int size = memsize_z(dc);
1976 LOG_DIS("adds.%c $r%u, $r%u\n",
1977 memsize_char(size),
1978 dc->op1, dc->op2);
1979
1980 cris_cc_mask(dc, CC_MASK_NZVC);
1981 t0 = tcg_temp_new();
1982 /* Size can only be qi or hi. */
1983 t_gen_sext(t0, cpu_R[dc->op1], size);
1984 cris_alu(dc, CC_OP_ADD,
1985 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1986 tcg_temp_free(t0);
1987 return 2;
1988 }
1989
1990 /* Zero extension. From size to dword. */
1991 static int dec_subu_r(CPUCRISState *env, DisasContext *dc)
1992 {
1993 TCGv t0;
1994 int size = memsize_z(dc);
1995 LOG_DIS("subu.%c $r%u, $r%u\n",
1996 memsize_char(size),
1997 dc->op1, dc->op2);
1998
1999 cris_cc_mask(dc, CC_MASK_NZVC);
2000 t0 = tcg_temp_new();
2001 /* Size can only be qi or hi. */
2002 t_gen_zext(t0, cpu_R[dc->op1], size);
2003 cris_alu(dc, CC_OP_SUB,
2004 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
2005 tcg_temp_free(t0);
2006 return 2;
2007 }
2008
2009 /* Sign extension. From size to dword. */
2010 static int dec_subs_r(CPUCRISState *env, DisasContext *dc)
2011 {
2012 TCGv t0;
2013 int size = memsize_z(dc);
2014 LOG_DIS("subs.%c $r%u, $r%u\n",
2015 memsize_char(size),
2016 dc->op1, dc->op2);
2017
2018 cris_cc_mask(dc, CC_MASK_NZVC);
2019 t0 = tcg_temp_new();
2020 /* Size can only be qi or hi. */
2021 t_gen_sext(t0, cpu_R[dc->op1], size);
2022 cris_alu(dc, CC_OP_SUB,
2023 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
2024 tcg_temp_free(t0);
2025 return 2;
2026 }
2027
2028 static int dec_setclrf(CPUCRISState *env, DisasContext *dc)
2029 {
2030 uint32_t flags;
2031 int set = (~dc->opcode >> 2) & 1;
2032
2033
2034 flags = (EXTRACT_FIELD(dc->ir, 12, 15) << 4)
2035 | EXTRACT_FIELD(dc->ir, 0, 3);
2036 if (set && flags == 0) {
2037 LOG_DIS("nop\n");
2038 return 2;
2039 } else if (!set && (flags & 0x20)) {
2040 LOG_DIS("di\n");
2041 } else {
2042 LOG_DIS("%sf %x\n", set ? "set" : "clr", flags);
2043 }
2044
2045 /* User space is not allowed to touch these. Silently ignore. */
2046 if (dc->tb_flags & U_FLAG) {
2047 flags &= ~(S_FLAG | I_FLAG | U_FLAG);
2048 }
2049
2050 if (flags & X_FLAG) {
2051 dc->flagx_known = 1;
2052 if (set) {
2053 dc->flags_x = X_FLAG;
2054 } else {
2055 dc->flags_x = 0;
2056 }
2057 }
2058
2059 /* Break the TB if any of the SPI flag changes. */
2060 if (flags & (P_FLAG | S_FLAG)) {
2061 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2062 dc->is_jmp = DISAS_UPDATE;
2063 dc->cpustate_changed = 1;
2064 }
2065
2066 /* For the I flag, only act on posedge. */
2067 if ((flags & I_FLAG)) {
2068 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2069 dc->is_jmp = DISAS_UPDATE;
2070 dc->cpustate_changed = 1;
2071 }
2072
2073
2074 /* Simply decode the flags. */
2075 cris_evaluate_flags(dc);
2076 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
2077 cris_update_cc_x(dc);
2078 tcg_gen_movi_tl(cc_op, dc->cc_op);
2079
2080 if (set) {
2081 if (!(dc->tb_flags & U_FLAG) && (flags & U_FLAG)) {
2082 /* Enter user mode. */
2083 t_gen_mov_env_TN(ksp, cpu_R[R_SP]);
2084 tcg_gen_mov_tl(cpu_R[R_SP], cpu_PR[PR_USP]);
2085 dc->cpustate_changed = 1;
2086 }
2087 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags);
2088 } else {
2089 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~flags);
2090 }
2091
2092 dc->flags_uptodate = 1;
2093 dc->clear_x = 0;
2094 return 2;
2095 }
2096
2097 static int dec_move_rs(CPUCRISState *env, DisasContext *dc)
2098 {
2099 LOG_DIS("move $r%u, $s%u\n", dc->op1, dc->op2);
2100 cris_cc_mask(dc, 0);
2101 gen_helper_movl_sreg_reg(cpu_env, tcg_const_tl(dc->op2),
2102 tcg_const_tl(dc->op1));
2103 return 2;
2104 }
2105 static int dec_move_sr(CPUCRISState *env, DisasContext *dc)
2106 {
2107 LOG_DIS("move $s%u, $r%u\n", dc->op2, dc->op1);
2108 cris_cc_mask(dc, 0);
2109 gen_helper_movl_reg_sreg(cpu_env, tcg_const_tl(dc->op1),
2110 tcg_const_tl(dc->op2));
2111 return 2;
2112 }
2113
2114 static int dec_move_rp(CPUCRISState *env, DisasContext *dc)
2115 {
2116 TCGv t[2];
2117 LOG_DIS("move $r%u, $p%u\n", dc->op1, dc->op2);
2118 cris_cc_mask(dc, 0);
2119
2120 t[0] = tcg_temp_new();
2121 if (dc->op2 == PR_CCS) {
2122 cris_evaluate_flags(dc);
2123 t_gen_mov_TN_reg(t[0], dc->op1);
2124 if (dc->tb_flags & U_FLAG) {
2125 t[1] = tcg_temp_new();
2126 /* User space is not allowed to touch all flags. */
2127 tcg_gen_andi_tl(t[0], t[0], 0x39f);
2128 tcg_gen_andi_tl(t[1], cpu_PR[PR_CCS], ~0x39f);
2129 tcg_gen_or_tl(t[0], t[1], t[0]);
2130 tcg_temp_free(t[1]);
2131 }
2132 } else {
2133 t_gen_mov_TN_reg(t[0], dc->op1);
2134 }
2135
2136 t_gen_mov_preg_TN(dc, dc->op2, t[0]);
2137 if (dc->op2 == PR_CCS) {
2138 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
2139 dc->flags_uptodate = 1;
2140 }
2141 tcg_temp_free(t[0]);
2142 return 2;
2143 }
2144 static int dec_move_pr(CPUCRISState *env, DisasContext *dc)
2145 {
2146 TCGv t0;
2147 LOG_DIS("move $p%u, $r%u\n", dc->op2, dc->op1);
2148 cris_cc_mask(dc, 0);
2149
2150 if (dc->op2 == PR_CCS) {
2151 cris_evaluate_flags(dc);
2152 }
2153
2154 if (dc->op2 == PR_DZ) {
2155 tcg_gen_movi_tl(cpu_R[dc->op1], 0);
2156 } else {
2157 t0 = tcg_temp_new();
2158 t_gen_mov_TN_preg(t0, dc->op2);
2159 cris_alu(dc, CC_OP_MOVE,
2160 cpu_R[dc->op1], cpu_R[dc->op1], t0,
2161 preg_sizes[dc->op2]);
2162 tcg_temp_free(t0);
2163 }
2164 return 2;
2165 }
2166
2167 static int dec_move_mr(CPUCRISState *env, DisasContext *dc)
2168 {
2169 int memsize = memsize_zz(dc);
2170 int insn_len;
2171 LOG_DIS("move.%c [$r%u%s, $r%u\n",
2172 memsize_char(memsize),
2173 dc->op1, dc->postinc ? "+]" : "]",
2174 dc->op2);
2175
2176 if (memsize == 4) {
2177 insn_len = dec_prep_move_m(env, dc, 0, 4, cpu_R[dc->op2]);
2178 cris_cc_mask(dc, CC_MASK_NZ);
2179 cris_update_cc_op(dc, CC_OP_MOVE, 4);
2180 cris_update_cc_x(dc);
2181 cris_update_result(dc, cpu_R[dc->op2]);
2182 } else {
2183 TCGv t0;
2184
2185 t0 = tcg_temp_new();
2186 insn_len = dec_prep_move_m(env, dc, 0, memsize, t0);
2187 cris_cc_mask(dc, CC_MASK_NZ);
2188 cris_alu(dc, CC_OP_MOVE,
2189 cpu_R[dc->op2], cpu_R[dc->op2], t0, memsize);
2190 tcg_temp_free(t0);
2191 }
2192 do_postinc(dc, memsize);
2193 return insn_len;
2194 }
2195
2196 static inline void cris_alu_m_alloc_temps(TCGv *t)
2197 {
2198 t[0] = tcg_temp_new();
2199 t[1] = tcg_temp_new();
2200 }
2201
2202 static inline void cris_alu_m_free_temps(TCGv *t)
2203 {
2204 tcg_temp_free(t[0]);
2205 tcg_temp_free(t[1]);
2206 }
2207
2208 static int dec_movs_m(CPUCRISState *env, DisasContext *dc)
2209 {
2210 TCGv t[2];
2211 int memsize = memsize_z(dc);
2212 int insn_len;
2213 LOG_DIS("movs.%c [$r%u%s, $r%u\n",
2214 memsize_char(memsize),
2215 dc->op1, dc->postinc ? "+]" : "]",
2216 dc->op2);
2217
2218 cris_alu_m_alloc_temps(t);
2219 /* sign extend. */
2220 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2221 cris_cc_mask(dc, CC_MASK_NZ);
2222 cris_alu(dc, CC_OP_MOVE,
2223 cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2224 do_postinc(dc, memsize);
2225 cris_alu_m_free_temps(t);
2226 return insn_len;
2227 }
2228
2229 static int dec_addu_m(CPUCRISState *env, DisasContext *dc)
2230 {
2231 TCGv t[2];
2232 int memsize = memsize_z(dc);
2233 int insn_len;
2234 LOG_DIS("addu.%c [$r%u%s, $r%u\n",
2235 memsize_char(memsize),
2236 dc->op1, dc->postinc ? "+]" : "]",
2237 dc->op2);
2238
2239 cris_alu_m_alloc_temps(t);
2240 /* sign extend. */
2241 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2242 cris_cc_mask(dc, CC_MASK_NZVC);
2243 cris_alu(dc, CC_OP_ADD,
2244 cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2245 do_postinc(dc, memsize);
2246 cris_alu_m_free_temps(t);
2247 return insn_len;
2248 }
2249
2250 static int dec_adds_m(CPUCRISState *env, DisasContext *dc)
2251 {
2252 TCGv t[2];
2253 int memsize = memsize_z(dc);
2254 int insn_len;
2255 LOG_DIS("adds.%c [$r%u%s, $r%u\n",
2256 memsize_char(memsize),
2257 dc->op1, dc->postinc ? "+]" : "]",
2258 dc->op2);
2259
2260 cris_alu_m_alloc_temps(t);
2261 /* sign extend. */
2262 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2263 cris_cc_mask(dc, CC_MASK_NZVC);
2264 cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2265 do_postinc(dc, memsize);
2266 cris_alu_m_free_temps(t);
2267 return insn_len;
2268 }
2269
2270 static int dec_subu_m(CPUCRISState *env, DisasContext *dc)
2271 {
2272 TCGv t[2];
2273 int memsize = memsize_z(dc);
2274 int insn_len;
2275 LOG_DIS("subu.%c [$r%u%s, $r%u\n",
2276 memsize_char(memsize),
2277 dc->op1, dc->postinc ? "+]" : "]",
2278 dc->op2);
2279
2280 cris_alu_m_alloc_temps(t);
2281 /* sign extend. */
2282 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2283 cris_cc_mask(dc, CC_MASK_NZVC);
2284 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2285 do_postinc(dc, memsize);
2286 cris_alu_m_free_temps(t);
2287 return insn_len;
2288 }
2289
2290 static int dec_subs_m(CPUCRISState *env, DisasContext *dc)
2291 {
2292 TCGv t[2];
2293 int memsize = memsize_z(dc);
2294 int insn_len;
2295 LOG_DIS("subs.%c [$r%u%s, $r%u\n",
2296 memsize_char(memsize),
2297 dc->op1, dc->postinc ? "+]" : "]",
2298 dc->op2);
2299
2300 cris_alu_m_alloc_temps(t);
2301 /* sign extend. */
2302 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2303 cris_cc_mask(dc, CC_MASK_NZVC);
2304 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2305 do_postinc(dc, memsize);
2306 cris_alu_m_free_temps(t);
2307 return insn_len;
2308 }
2309
2310 static int dec_movu_m(CPUCRISState *env, DisasContext *dc)
2311 {
2312 TCGv t[2];
2313 int memsize = memsize_z(dc);
2314 int insn_len;
2315
2316 LOG_DIS("movu.%c [$r%u%s, $r%u\n",
2317 memsize_char(memsize),
2318 dc->op1, dc->postinc ? "+]" : "]",
2319 dc->op2);
2320
2321 cris_alu_m_alloc_temps(t);
2322 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2323 cris_cc_mask(dc, CC_MASK_NZ);
2324 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2325 do_postinc(dc, memsize);
2326 cris_alu_m_free_temps(t);
2327 return insn_len;
2328 }
2329
2330 static int dec_cmpu_m(CPUCRISState *env, DisasContext *dc)
2331 {
2332 TCGv t[2];
2333 int memsize = memsize_z(dc);
2334 int insn_len;
2335 LOG_DIS("cmpu.%c [$r%u%s, $r%u\n",
2336 memsize_char(memsize),
2337 dc->op1, dc->postinc ? "+]" : "]",
2338 dc->op2);
2339
2340 cris_alu_m_alloc_temps(t);
2341 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2342 cris_cc_mask(dc, CC_MASK_NZVC);
2343 cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2344 do_postinc(dc, memsize);
2345 cris_alu_m_free_temps(t);
2346 return insn_len;
2347 }
2348
2349 static int dec_cmps_m(CPUCRISState *env, DisasContext *dc)
2350 {
2351 TCGv t[2];
2352 int memsize = memsize_z(dc);
2353 int insn_len;
2354 LOG_DIS("cmps.%c [$r%u%s, $r%u\n",
2355 memsize_char(memsize),
2356 dc->op1, dc->postinc ? "+]" : "]",
2357 dc->op2);
2358
2359 cris_alu_m_alloc_temps(t);
2360 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2361 cris_cc_mask(dc, CC_MASK_NZVC);
2362 cris_alu(dc, CC_OP_CMP,
2363 cpu_R[dc->op2], cpu_R[dc->op2], t[1],
2364 memsize_zz(dc));
2365 do_postinc(dc, memsize);
2366 cris_alu_m_free_temps(t);
2367 return insn_len;
2368 }
2369
2370 static int dec_cmp_m(CPUCRISState *env, DisasContext *dc)
2371 {
2372 TCGv t[2];
2373 int memsize = memsize_zz(dc);
2374 int insn_len;
2375 LOG_DIS("cmp.%c [$r%u%s, $r%u\n",
2376 memsize_char(memsize),
2377 dc->op1, dc->postinc ? "+]" : "]",
2378 dc->op2);
2379
2380 cris_alu_m_alloc_temps(t);
2381 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2382 cris_cc_mask(dc, CC_MASK_NZVC);
2383 cris_alu(dc, CC_OP_CMP,
2384 cpu_R[dc->op2], cpu_R[dc->op2], t[1],
2385 memsize_zz(dc));
2386 do_postinc(dc, memsize);
2387 cris_alu_m_free_temps(t);
2388 return insn_len;
2389 }
2390
2391 static int dec_test_m(CPUCRISState *env, DisasContext *dc)
2392 {
2393 TCGv t[2];
2394 int memsize = memsize_zz(dc);
2395 int insn_len;
2396 LOG_DIS("test.%c [$r%u%s] op2=%x\n",
2397 memsize_char(memsize),
2398 dc->op1, dc->postinc ? "+]" : "]",
2399 dc->op2);
2400
2401 cris_evaluate_flags(dc);
2402
2403 cris_alu_m_alloc_temps(t);
2404 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2405 cris_cc_mask(dc, CC_MASK_NZ);
2406 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3);
2407
2408 cris_alu(dc, CC_OP_CMP,
2409 cpu_R[dc->op2], t[1], tcg_const_tl(0), memsize_zz(dc));
2410 do_postinc(dc, memsize);
2411 cris_alu_m_free_temps(t);
2412 return insn_len;
2413 }
2414
2415 static int dec_and_m(CPUCRISState *env, DisasContext *dc)
2416 {
2417 TCGv t[2];
2418 int memsize = memsize_zz(dc);
2419 int insn_len;
2420 LOG_DIS("and.%c [$r%u%s, $r%u\n",
2421 memsize_char(memsize),
2422 dc->op1, dc->postinc ? "+]" : "]",
2423 dc->op2);
2424
2425 cris_alu_m_alloc_temps(t);
2426 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2427 cris_cc_mask(dc, CC_MASK_NZ);
2428 cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
2429 do_postinc(dc, memsize);
2430 cris_alu_m_free_temps(t);
2431 return insn_len;
2432 }
2433
2434 static int dec_add_m(CPUCRISState *env, DisasContext *dc)
2435 {
2436 TCGv t[2];
2437 int memsize = memsize_zz(dc);
2438 int insn_len;
2439 LOG_DIS("add.%c [$r%u%s, $r%u\n",
2440 memsize_char(memsize),
2441 dc->op1, dc->postinc ? "+]" : "]",
2442 dc->op2);
2443
2444 cris_alu_m_alloc_temps(t);
2445 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2446 cris_cc_mask(dc, CC_MASK_NZVC);
2447 cris_alu(dc, CC_OP_ADD,
2448 cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
2449 do_postinc(dc, memsize);
2450 cris_alu_m_free_temps(t);
2451 return insn_len;
2452 }
2453
2454 static int dec_addo_m(CPUCRISState *env, DisasContext *dc)
2455 {
2456 TCGv t[2];
2457 int memsize = memsize_zz(dc);
2458 int insn_len;
2459 LOG_DIS("add.%c [$r%u%s, $r%u\n",
2460 memsize_char(memsize),
2461 dc->op1, dc->postinc ? "+]" : "]",
2462 dc->op2);
2463
2464 cris_alu_m_alloc_temps(t);
2465 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2466 cris_cc_mask(dc, 0);
2467 cris_alu(dc, CC_OP_ADD, cpu_R[R_ACR], t[0], t[1], 4);
2468 do_postinc(dc, memsize);
2469 cris_alu_m_free_temps(t);
2470 return insn_len;
2471 }
2472
2473 static int dec_bound_m(CPUCRISState *env, DisasContext *dc)
2474 {
2475 TCGv l[2];
2476 int memsize = memsize_zz(dc);
2477 int insn_len;
2478 LOG_DIS("bound.%c [$r%u%s, $r%u\n",
2479 memsize_char(memsize),
2480 dc->op1, dc->postinc ? "+]" : "]",
2481 dc->op2);
2482
2483 l[0] = tcg_temp_local_new();
2484 l[1] = tcg_temp_local_new();
2485 insn_len = dec_prep_alu_m(env, dc, 0, memsize, l[0], l[1]);
2486 cris_cc_mask(dc, CC_MASK_NZ);
2487 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], l[0], l[1], 4);
2488 do_postinc(dc, memsize);
2489 tcg_temp_free(l[0]);
2490 tcg_temp_free(l[1]);
2491 return insn_len;
2492 }
2493
2494 static int dec_addc_mr(CPUCRISState *env, DisasContext *dc)
2495 {
2496 TCGv t[2];
2497 int insn_len = 2;
2498 LOG_DIS("addc [$r%u%s, $r%u\n",
2499 dc->op1, dc->postinc ? "+]" : "]",
2500 dc->op2);
2501
2502 cris_evaluate_flags(dc);
2503
2504 /* Set for this insn. */
2505 dc->flagx_known = 1;
2506 dc->flags_x = X_FLAG;
2507
2508 cris_alu_m_alloc_temps(t);
2509 insn_len = dec_prep_alu_m(env, dc, 0, 4, t[0], t[1]);
2510 cris_cc_mask(dc, CC_MASK_NZVC);
2511 cris_alu(dc, CC_OP_ADDC, cpu_R[dc->op2], t[0], t[1], 4);
2512 do_postinc(dc, 4);
2513 cris_alu_m_free_temps(t);
2514 return insn_len;
2515 }
2516
2517 static int dec_sub_m(CPUCRISState *env, DisasContext *dc)
2518 {
2519 TCGv t[2];
2520 int memsize = memsize_zz(dc);
2521 int insn_len;
2522 LOG_DIS("sub.%c [$r%u%s, $r%u ir=%x zz=%x\n",
2523 memsize_char(memsize),
2524 dc->op1, dc->postinc ? "+]" : "]",
2525 dc->op2, dc->ir, dc->zzsize);
2526
2527 cris_alu_m_alloc_temps(t);
2528 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2529 cris_cc_mask(dc, CC_MASK_NZVC);
2530 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], memsize);
2531 do_postinc(dc, memsize);
2532 cris_alu_m_free_temps(t);
2533 return insn_len;
2534 }
2535
2536 static int dec_or_m(CPUCRISState *env, DisasContext *dc)
2537 {
2538 TCGv t[2];
2539 int memsize = memsize_zz(dc);
2540 int insn_len;
2541 LOG_DIS("or.%c [$r%u%s, $r%u pc=%x\n",
2542 memsize_char(memsize),
2543 dc->op1, dc->postinc ? "+]" : "]",
2544 dc->op2, dc->pc);
2545
2546 cris_alu_m_alloc_temps(t);
2547 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2548 cris_cc_mask(dc, CC_MASK_NZ);
2549 cris_alu(dc, CC_OP_OR,
2550 cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
2551 do_postinc(dc, memsize);
2552 cris_alu_m_free_temps(t);
2553 return insn_len;
2554 }
2555
2556 static int dec_move_mp(CPUCRISState *env, DisasContext *dc)
2557 {
2558 TCGv t[2];
2559 int memsize = memsize_zz(dc);
2560 int insn_len = 2;
2561
2562 LOG_DIS("move.%c [$r%u%s, $p%u\n",
2563 memsize_char(memsize),
2564 dc->op1,
2565 dc->postinc ? "+]" : "]",
2566 dc->op2);
2567
2568 cris_alu_m_alloc_temps(t);
2569 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2570 cris_cc_mask(dc, 0);
2571 if (dc->op2 == PR_CCS) {
2572 cris_evaluate_flags(dc);
2573 if (dc->tb_flags & U_FLAG) {
2574 /* User space is not allowed to touch all flags. */
2575 tcg_gen_andi_tl(t[1], t[1], 0x39f);
2576 tcg_gen_andi_tl(t[0], cpu_PR[PR_CCS], ~0x39f);
2577 tcg_gen_or_tl(t[1], t[0], t[1]);
2578 }
2579 }
2580
2581 t_gen_mov_preg_TN(dc, dc->op2, t[1]);
2582
2583 do_postinc(dc, memsize);
2584 cris_alu_m_free_temps(t);
2585 return insn_len;
2586 }
2587
2588 static int dec_move_pm(CPUCRISState *env, DisasContext *dc)
2589 {
2590 TCGv t0;
2591 int memsize;
2592
2593 memsize = preg_sizes[dc->op2];
2594
2595 LOG_DIS("move.%c $p%u, [$r%u%s\n",
2596 memsize_char(memsize),
2597 dc->op2, dc->op1, dc->postinc ? "+]" : "]");
2598
2599 /* prepare store. Address in T0, value in T1. */
2600 if (dc->op2 == PR_CCS) {
2601 cris_evaluate_flags(dc);
2602 }
2603 t0 = tcg_temp_new();
2604 t_gen_mov_TN_preg(t0, dc->op2);
2605 cris_flush_cc_state(dc);
2606 gen_store(dc, cpu_R[dc->op1], t0, memsize);
2607 tcg_temp_free(t0);
2608
2609 cris_cc_mask(dc, 0);
2610 if (dc->postinc) {
2611 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize);
2612 }
2613 return 2;
2614 }
2615
2616 static int dec_movem_mr(CPUCRISState *env, DisasContext *dc)
2617 {
2618 TCGv_i64 tmp[16];
2619 TCGv tmp32;
2620 TCGv addr;
2621 int i;
2622 int nr = dc->op2 + 1;
2623
2624 LOG_DIS("movem [$r%u%s, $r%u\n", dc->op1,
2625 dc->postinc ? "+]" : "]", dc->op2);
2626
2627 addr = tcg_temp_new();
2628 /* There are probably better ways of doing this. */
2629 cris_flush_cc_state(dc);
2630 for (i = 0; i < (nr >> 1); i++) {
2631 tmp[i] = tcg_temp_new_i64();
2632 tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8);
2633 gen_load64(dc, tmp[i], addr);
2634 }
2635 if (nr & 1) {
2636 tmp32 = tcg_temp_new_i32();
2637 tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8);
2638 gen_load(dc, tmp32, addr, 4, 0);
2639 } else {
2640 TCGV_UNUSED(tmp32);
2641 }
2642 tcg_temp_free(addr);
2643
2644 for (i = 0; i < (nr >> 1); i++) {
2645 tcg_gen_trunc_i64_i32(cpu_R[i * 2], tmp[i]);
2646 tcg_gen_shri_i64(tmp[i], tmp[i], 32);
2647 tcg_gen_trunc_i64_i32(cpu_R[i * 2 + 1], tmp[i]);
2648 tcg_temp_free_i64(tmp[i]);
2649 }
2650 if (nr & 1) {
2651 tcg_gen_mov_tl(cpu_R[dc->op2], tmp32);
2652 tcg_temp_free(tmp32);
2653 }
2654
2655 /* writeback the updated pointer value. */
2656 if (dc->postinc) {
2657 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], nr * 4);
2658 }
2659
2660 /* gen_load might want to evaluate the previous insns flags. */
2661 cris_cc_mask(dc, 0);
2662 return 2;
2663 }
2664
2665 static int dec_movem_rm(CPUCRISState *env, DisasContext *dc)
2666 {
2667 TCGv tmp;
2668 TCGv addr;
2669 int i;
2670
2671 LOG_DIS("movem $r%u, [$r%u%s\n", dc->op2, dc->op1,
2672 dc->postinc ? "+]" : "]");
2673
2674 cris_flush_cc_state(dc);
2675
2676 tmp = tcg_temp_new();
2677 addr = tcg_temp_new();
2678 tcg_gen_movi_tl(tmp, 4);
2679 tcg_gen_mov_tl(addr, cpu_R[dc->op1]);
2680 for (i = 0; i <= dc->op2; i++) {
2681 /* Displace addr. */
2682 /* Perform the store. */
2683 gen_store(dc, addr, cpu_R[i], 4);
2684 tcg_gen_add_tl(addr, addr, tmp);
2685 }
2686 if (dc->postinc) {
2687 tcg_gen_mov_tl(cpu_R[dc->op1], addr);
2688 }
2689 cris_cc_mask(dc, 0);
2690 tcg_temp_free(tmp);
2691 tcg_temp_free(addr);
2692 return 2;
2693 }
2694
2695 static int dec_move_rm(CPUCRISState *env, DisasContext *dc)
2696 {
2697 int memsize;
2698
2699 memsize = memsize_zz(dc);
2700
2701 LOG_DIS("move.%c $r%u, [$r%u]\n",
2702 memsize_char(memsize), dc->op2, dc->op1);
2703
2704 /* prepare store. */
2705 cris_flush_cc_state(dc);
2706 gen_store(dc, cpu_R[dc->op1], cpu_R[dc->op2], memsize);
2707
2708 if (dc->postinc) {
2709 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize);
2710 }
2711 cris_cc_mask(dc, 0);
2712 return 2;
2713 }
2714
2715 static int dec_lapcq(CPUCRISState *env, DisasContext *dc)
2716 {
2717 LOG_DIS("lapcq %x, $r%u\n",
2718 dc->pc + dc->op1*2, dc->op2);
2719 cris_cc_mask(dc, 0);
2720 tcg_gen_movi_tl(cpu_R[dc->op2], dc->pc + dc->op1 * 2);
2721 return 2;
2722 }
2723
2724 static int dec_lapc_im(CPUCRISState *env, DisasContext *dc)
2725 {
2726 unsigned int rd;
2727 int32_t imm;
2728 int32_t pc;
2729
2730 rd = dc->op2;
2731
2732 cris_cc_mask(dc, 0);
2733 imm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2734 LOG_DIS("lapc 0x%x, $r%u\n", imm + dc->pc, dc->op2);
2735
2736 pc = dc->pc;
2737 pc += imm;
2738 tcg_gen_movi_tl(cpu_R[rd], pc);
2739 return 6;
2740 }
2741
2742 /* Jump to special reg. */
2743 static int dec_jump_p(CPUCRISState *env, DisasContext *dc)
2744 {
2745 LOG_DIS("jump $p%u\n", dc->op2);
2746
2747 if (dc->op2 == PR_CCS) {
2748 cris_evaluate_flags(dc);
2749 }
2750 t_gen_mov_TN_preg(env_btarget, dc->op2);
2751 /* rete will often have low bit set to indicate delayslot. */
2752 tcg_gen_andi_tl(env_btarget, env_btarget, ~1);
2753 cris_cc_mask(dc, 0);
2754 cris_prepare_jmp(dc, JMP_INDIRECT);
2755 return 2;
2756 }
2757
2758 /* Jump and save. */
2759 static int dec_jas_r(CPUCRISState *env, DisasContext *dc)
2760 {
2761 LOG_DIS("jas $r%u, $p%u\n", dc->op1, dc->op2);
2762 cris_cc_mask(dc, 0);
2763 /* Store the return address in Pd. */
2764 tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]);
2765 if (dc->op2 > 15) {
2766 abort();
2767 }
2768 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4));
2769
2770 cris_prepare_jmp(dc, JMP_INDIRECT);
2771 return 2;
2772 }
2773
2774 static int dec_jas_im(CPUCRISState *env, DisasContext *dc)
2775 {
2776 uint32_t imm;
2777
2778 imm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2779
2780 LOG_DIS("jas 0x%x\n", imm);
2781 cris_cc_mask(dc, 0);
2782 /* Store the return address in Pd. */
2783 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8));
2784
2785 dc->jmp_pc = imm;
2786 cris_prepare_jmp(dc, JMP_DIRECT);
2787 return 6;
2788 }
2789
2790 static int dec_jasc_im(CPUCRISState *env, DisasContext *dc)
2791 {
2792 uint32_t imm;
2793
2794 imm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2795
2796 LOG_DIS("jasc 0x%x\n", imm);
2797 cris_cc_mask(dc, 0);
2798 /* Store the return address in Pd. */
2799 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8 + 4));
2800
2801 dc->jmp_pc = imm;
2802 cris_prepare_jmp(dc, JMP_DIRECT);
2803 return 6;
2804 }
2805
2806 static int dec_jasc_r(CPUCRISState *env, DisasContext *dc)
2807 {
2808 LOG_DIS("jasc_r $r%u, $p%u\n", dc->op1, dc->op2);
2809 cris_cc_mask(dc, 0);
2810 /* Store the return address in Pd. */
2811 tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]);
2812 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4 + 4));
2813 cris_prepare_jmp(dc, JMP_INDIRECT);
2814 return 2;
2815 }
2816
2817 static int dec_bcc_im(CPUCRISState *env, DisasContext *dc)
2818 {
2819 int32_t offset;
2820 uint32_t cond = dc->op2;
2821
2822 offset = cris_fetch(env, dc, dc->pc + 2, 2, 1);
2823
2824 LOG_DIS("b%s %d pc=%x dst=%x\n",
2825 cc_name(cond), offset,
2826 dc->pc, dc->pc + offset);
2827
2828 cris_cc_mask(dc, 0);
2829 /* op2 holds the condition-code. */
2830 cris_prepare_cc_branch(dc, offset, cond);
2831 return 4;
2832 }
2833
2834 static int dec_bas_im(CPUCRISState *env, DisasContext *dc)
2835 {
2836 int32_t simm;
2837
2838 simm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2839
2840 LOG_DIS("bas 0x%x, $p%u\n", dc->pc + simm, dc->op2);
2841 cris_cc_mask(dc, 0);
2842 /* Store the return address in Pd. */
2843 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8));
2844
2845 dc->jmp_pc = dc->pc + simm;
2846 cris_prepare_jmp(dc, JMP_DIRECT);
2847 return 6;
2848 }
2849
2850 static int dec_basc_im(CPUCRISState *env, DisasContext *dc)
2851 {
2852 int32_t simm;
2853 simm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2854
2855 LOG_DIS("basc 0x%x, $p%u\n", dc->pc + simm, dc->op2);
2856 cris_cc_mask(dc, 0);
2857 /* Store the return address in Pd. */
2858 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 12));
2859
2860 dc->jmp_pc = dc->pc + simm;
2861 cris_prepare_jmp(dc, JMP_DIRECT);
2862 return 6;
2863 }
2864
2865 static int dec_rfe_etc(CPUCRISState *env, DisasContext *dc)
2866 {
2867 cris_cc_mask(dc, 0);
2868
2869 if (dc->op2 == 15) {
2870 tcg_gen_st_i32(tcg_const_i32(1), cpu_env,
2871 -offsetof(CRISCPU, env) + offsetof(CPUState, halted));
2872 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2873 t_gen_raise_exception(EXCP_HLT);
2874 return 2;
2875 }
2876
2877 switch (dc->op2 & 7) {
2878 case 2:
2879 /* rfe. */
2880 LOG_DIS("rfe\n");
2881 cris_evaluate_flags(dc);
2882 gen_helper_rfe(cpu_env);
2883 dc->is_jmp = DISAS_UPDATE;
2884 break;
2885 case 5:
2886 /* rfn. */
2887 LOG_DIS("rfn\n");
2888 cris_evaluate_flags(dc);
2889 gen_helper_rfn(cpu_env);
2890 dc->is_jmp = DISAS_UPDATE;
2891 break;
2892 case 6:
2893 LOG_DIS("break %d\n", dc->op1);
2894 cris_evaluate_flags(dc);
2895 /* break. */
2896 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2897
2898 /* Breaks start at 16 in the exception vector. */
2899 t_gen_mov_env_TN(trap_vector,
2900 tcg_const_tl(dc->op1 + 16));
2901 t_gen_raise_exception(EXCP_BREAK);
2902 dc->is_jmp = DISAS_UPDATE;
2903 break;
2904 default:
2905 printf("op2=%x\n", dc->op2);
2906 BUG();
2907 break;
2908
2909 }
2910 return 2;
2911 }
2912
2913 static int dec_ftag_fidx_d_m(CPUCRISState *env, DisasContext *dc)
2914 {
2915 return 2;
2916 }
2917
2918 static int dec_ftag_fidx_i_m(CPUCRISState *env, DisasContext *dc)
2919 {
2920 return 2;
2921 }
2922
2923 static int dec_null(CPUCRISState *env, DisasContext *dc)
2924 {
2925 printf("unknown insn pc=%x opc=%x op1=%x op2=%x\n",
2926 dc->pc, dc->opcode, dc->op1, dc->op2);
2927 fflush(NULL);
2928 BUG();
2929 return 2;
2930 }
2931
2932 static struct decoder_info {
2933 struct {
2934 uint32_t bits;
2935 uint32_t mask;
2936 };
2937 int (*dec)(CPUCRISState *env, DisasContext *dc);
2938 } decinfo[] = {
2939 /* Order matters here. */
2940 {DEC_MOVEQ, dec_moveq},
2941 {DEC_BTSTQ, dec_btstq},
2942 {DEC_CMPQ, dec_cmpq},
2943 {DEC_ADDOQ, dec_addoq},
2944 {DEC_ADDQ, dec_addq},
2945 {DEC_SUBQ, dec_subq},
2946 {DEC_ANDQ, dec_andq},
2947 {DEC_ORQ, dec_orq},
2948 {DEC_ASRQ, dec_asrq},
2949 {DEC_LSLQ, dec_lslq},
2950 {DEC_LSRQ, dec_lsrq},
2951 {DEC_BCCQ, dec_bccq},
2952
2953 {DEC_BCC_IM, dec_bcc_im},
2954 {DEC_JAS_IM, dec_jas_im},
2955 {DEC_JAS_R, dec_jas_r},
2956 {DEC_JASC_IM, dec_jasc_im},
2957 {DEC_JASC_R, dec_jasc_r},
2958 {DEC_BAS_IM, dec_bas_im},
2959 {DEC_BASC_IM, dec_basc_im},
2960 {DEC_JUMP_P, dec_jump_p},
2961 {DEC_LAPC_IM, dec_lapc_im},
2962 {DEC_LAPCQ, dec_lapcq},
2963
2964 {DEC_RFE_ETC, dec_rfe_etc},
2965 {DEC_ADDC_MR, dec_addc_mr},
2966
2967 {DEC_MOVE_MP, dec_move_mp},
2968 {DEC_MOVE_PM, dec_move_pm},
2969 {DEC_MOVEM_MR, dec_movem_mr},
2970 {DEC_MOVEM_RM, dec_movem_rm},
2971 {DEC_MOVE_PR, dec_move_pr},
2972 {DEC_SCC_R, dec_scc_r},
2973 {DEC_SETF, dec_setclrf},
2974 {DEC_CLEARF, dec_setclrf},
2975
2976 {DEC_MOVE_SR, dec_move_sr},
2977 {DEC_MOVE_RP, dec_move_rp},
2978 {DEC_SWAP_R, dec_swap_r},
2979 {DEC_ABS_R, dec_abs_r},
2980 {DEC_LZ_R, dec_lz_r},
2981 {DEC_MOVE_RS, dec_move_rs},
2982 {DEC_BTST_R, dec_btst_r},
2983 {DEC_ADDC_R, dec_addc_r},
2984
2985 {DEC_DSTEP_R, dec_dstep_r},
2986 {DEC_XOR_R, dec_xor_r},
2987 {DEC_MCP_R, dec_mcp_r},
2988 {DEC_CMP_R, dec_cmp_r},
2989
2990 {DEC_ADDI_R, dec_addi_r},
2991 {DEC_ADDI_ACR, dec_addi_acr},
2992
2993 {DEC_ADD_R, dec_add_r},
2994 {DEC_SUB_R, dec_sub_r},
2995
2996 {DEC_ADDU_R, dec_addu_r},
2997 {DEC_ADDS_R, dec_adds_r},
2998 {DEC_SUBU_R, dec_subu_r},
2999 {DEC_SUBS_R, dec_subs_r},
3000 {DEC_LSL_R, dec_lsl_r},
3001
3002 {DEC_AND_R, dec_and_r},
3003 {DEC_OR_R, dec_or_r},
3004 {DEC_BOUND_R, dec_bound_r},
3005 {DEC_ASR_R, dec_asr_r},
3006 {DEC_LSR_R, dec_lsr_r},
3007
3008 {DEC_MOVU_R, dec_movu_r},
3009 {DEC_MOVS_R, dec_movs_r},
3010 {DEC_NEG_R, dec_neg_r},
3011 {DEC_MOVE_R, dec_move_r},
3012
3013 {DEC_FTAG_FIDX_I_M, dec_ftag_fidx_i_m},
3014 {DEC_FTAG_FIDX_D_M, dec_ftag_fidx_d_m},
3015
3016 {DEC_MULS_R, dec_muls_r},
3017 {DEC_MULU_R, dec_mulu_r},
3018
3019 {DEC_ADDU_M, dec_addu_m},
3020 {DEC_ADDS_M, dec_adds_m},
3021 {DEC_SUBU_M, dec_subu_m},
3022 {DEC_SUBS_M, dec_subs_m},
3023
3024 {DEC_CMPU_M, dec_cmpu_m},
3025 {DEC_CMPS_M, dec_cmps_m},
3026 {DEC_MOVU_M, dec_movu_m},
3027 {DEC_MOVS_M, dec_movs_m},
3028
3029 {DEC_CMP_M, dec_cmp_m},
3030 {DEC_ADDO_M, dec_addo_m},
3031 {DEC_BOUND_M, dec_bound_m},
3032 {DEC_ADD_M, dec_add_m},
3033 {DEC_SUB_M, dec_sub_m},
3034 {DEC_AND_M, dec_and_m},
3035 {DEC_OR_M, dec_or_m},
3036 {DEC_MOVE_RM, dec_move_rm},
3037 {DEC_TEST_M, dec_test_m},
3038 {DEC_MOVE_MR, dec_move_mr},
3039
3040 {{0, 0}, dec_null}
3041 };
3042
3043 static unsigned int crisv32_decoder(CPUCRISState *env, DisasContext *dc)
3044 {
3045 int insn_len = 2;
3046 int i;
3047
3048 if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP | CPU_LOG_TB_OP_OPT))) {
3049 tcg_gen_debug_insn_start(dc->pc);
3050 }
3051
3052 /* Load a halfword onto the instruction register. */
3053 dc->ir = cris_fetch(env, dc, dc->pc, 2, 0);
3054
3055 /* Now decode it. */
3056 dc->opcode = EXTRACT_FIELD(dc->ir, 4, 11);
3057 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 3);
3058 dc->op2 = EXTRACT_FIELD(dc->ir, 12, 15);
3059 dc->zsize = EXTRACT_FIELD(dc->ir, 4, 4);
3060 dc->zzsize = EXTRACT_FIELD(dc->ir, 4, 5);
3061 dc->postinc = EXTRACT_FIELD(dc->ir, 10, 10);
3062
3063 /* Large switch for all insns. */
3064 for (i = 0; i < ARRAY_SIZE(decinfo); i++) {
3065 if ((dc->opcode & decinfo[i].mask) == decinfo[i].bits) {
3066 insn_len = decinfo[i].dec(env, dc);
3067 break;
3068 }
3069 }
3070
3071 #if !defined(CONFIG_USER_ONLY)
3072 /* Single-stepping ? */
3073 if (dc->tb_flags & S_FLAG) {
3074 int l1;
3075
3076 l1 = gen_new_label();
3077 tcg_gen_brcondi_tl(TCG_COND_NE, cpu_PR[PR_SPC], dc->pc, l1);
3078 /* We treat SPC as a break with an odd trap vector. */
3079 cris_evaluate_flags(dc);
3080 t_gen_mov_env_TN(trap_vector, tcg_const_tl(3));
3081 tcg_gen_movi_tl(env_pc, dc->pc + insn_len);
3082 tcg_gen_movi_tl(cpu_PR[PR_SPC], dc->pc + insn_len);
3083 t_gen_raise_exception(EXCP_BREAK);
3084 gen_set_label(l1);
3085 }
3086 #endif
3087 return insn_len;
3088 }
3089
3090 static void check_breakpoint(CPUCRISState *env, DisasContext *dc)
3091 {
3092 CPUBreakpoint *bp;
3093
3094 if (unlikely(!QTAILQ_EMPTY(&env->breakpoints))) {
3095 QTAILQ_FOREACH(bp, &env->breakpoints, entry) {
3096 if (bp->pc == dc->pc) {
3097 cris_evaluate_flags(dc);
3098 tcg_gen_movi_tl(env_pc, dc->pc);
3099 t_gen_raise_exception(EXCP_DEBUG);
3100 dc->is_jmp = DISAS_UPDATE;
3101 }
3102 }
3103 }
3104 }
3105
3106 #include "translate_v10.c"
3107
3108 /*
3109 * Delay slots on QEMU/CRIS.
3110 *
3111 * If an exception hits on a delayslot, the core will let ERP (the Exception
3112 * Return Pointer) point to the branch (the previous) insn and set the lsb to
3113 * to give SW a hint that the exception actually hit on the dslot.
3114 *
3115 * CRIS expects all PC addresses to be 16-bit aligned. The lsb is ignored by
3116 * the core and any jmp to an odd addresses will mask off that lsb. It is
3117 * simply there to let sw know there was an exception on a dslot.
3118 *
3119 * When the software returns from an exception, the branch will re-execute.
3120 * On QEMU care needs to be taken when a branch+delayslot sequence is broken
3121 * and the branch and delayslot dont share pages.
3122 *
3123 * The TB contaning the branch insn will set up env->btarget and evaluate
3124 * env->btaken. When the translation loop exits we will note that the branch
3125 * sequence is broken and let env->dslot be the size of the branch insn (those
3126 * vary in length).
3127 *
3128 * The TB contaning the delayslot will have the PC of its real insn (i.e no lsb
3129 * set). It will also expect to have env->dslot setup with the size of the
3130 * delay slot so that env->pc - env->dslot point to the branch insn. This TB
3131 * will execute the dslot and take the branch, either to btarget or just one
3132 * insn ahead.
3133 *
3134 * When exceptions occur, we check for env->dslot in do_interrupt to detect
3135 * broken branch sequences and setup $erp accordingly (i.e let it point to the
3136 * branch and set lsb). Then env->dslot gets cleared so that the exception
3137 * handler can enter. When returning from exceptions (jump $erp) the lsb gets
3138 * masked off and we will reexecute the branch insn.
3139 *
3140 */
3141
3142 /* generate intermediate code for basic block 'tb'. */
3143 static inline void
3144 gen_intermediate_code_internal(CRISCPU *cpu, TranslationBlock *tb,
3145 bool search_pc)
3146 {
3147 CPUState *cs = CPU(cpu);
3148 CPUCRISState *env = &cpu->env;
3149 uint16_t *gen_opc_end;
3150 uint32_t pc_start;
3151 unsigned int insn_len;
3152 int j, lj;
3153 struct DisasContext ctx;
3154 struct DisasContext *dc = &ctx;
3155 uint32_t next_page_start;
3156 target_ulong npc;
3157 int num_insns;
3158 int max_insns;
3159
3160 if (env->pregs[PR_VR] == 32) {
3161 dc->decoder = crisv32_decoder;
3162 dc->clear_locked_irq = 0;
3163 } else {
3164 dc->decoder = crisv10_decoder;
3165 dc->clear_locked_irq = 1;
3166 }
3167
3168 /* Odd PC indicates that branch is rexecuting due to exception in the
3169 * delayslot, like in real hw.
3170 */
3171 pc_start = tb->pc & ~1;
3172 dc->env = env;
3173 dc->tb = tb;
3174
3175 gen_opc_end = tcg_ctx.gen_opc_buf + OPC_MAX_SIZE;
3176
3177 dc->is_jmp = DISAS_NEXT;
3178 dc->ppc = pc_start;
3179 dc->pc = pc_start;
3180 dc->singlestep_enabled = cs->singlestep_enabled;
3181 dc->flags_uptodate = 1;
3182 dc->flagx_known = 1;
3183 dc->flags_x = tb->flags & X_FLAG;
3184 dc->cc_x_uptodate = 0;
3185 dc->cc_mask = 0;
3186 dc->update_cc = 0;
3187 dc->clear_prefix = 0;
3188
3189 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
3190 dc->cc_size_uptodate = -1;
3191
3192 /* Decode TB flags. */
3193 dc->tb_flags = tb->flags & (S_FLAG | P_FLAG | U_FLAG \
3194 | X_FLAG | PFIX_FLAG);
3195 dc->delayed_branch = !!(tb->flags & 7);
3196 if (dc->delayed_branch) {
3197 dc->jmp = JMP_INDIRECT;
3198 } else {
3199 dc->jmp = JMP_NOJMP;
3200 }
3201
3202 dc->cpustate_changed = 0;
3203
3204 if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
3205 qemu_log(
3206 "srch=%d pc=%x %x flg=%" PRIx64 " bt=%x ds=%u ccs=%x\n"
3207 "pid=%x usp=%x\n"
3208 "%x.%x.%x.%x\n"
3209 "%x.%x.%x.%x\n"
3210 "%x.%x.%x.%x\n"
3211 "%x.%x.%x.%x\n",
3212 search_pc, dc->pc, dc->ppc,
3213 (uint64_t)tb->flags,
3214 env->btarget, (unsigned)tb->flags & 7,
3215 env->pregs[PR_CCS],
3216 env->pregs[PR_PID], env->pregs[PR_USP],
3217 env->regs[0], env->regs[1], env->regs[2], env->regs[3],
3218 env->regs[4], env->regs[5], env->regs[6], env->regs[7],
3219 env->regs[8], env->regs[9],
3220 env->regs[10], env->regs[11],
3221 env->regs[12], env->regs[13],
3222 env->regs[14], env->regs[15]);
3223 qemu_log("--------------\n");
3224 qemu_log("IN: %s\n", lookup_symbol(pc_start));
3225 }
3226
3227 next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
3228 lj = -1;
3229 num_insns = 0;
3230 max_insns = tb->cflags & CF_COUNT_MASK;
3231 if (max_insns == 0) {
3232 max_insns = CF_COUNT_MASK;
3233 }
3234
3235 gen_tb_start();
3236 do {
3237 check_breakpoint(env, dc);
3238
3239 if (search_pc) {
3240 j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
3241 if (lj < j) {
3242 lj++;
3243 while (lj < j) {
3244 tcg_ctx.gen_opc_instr_start[lj++] = 0;
3245 }
3246 }
3247 if (dc->delayed_branch == 1) {
3248 tcg_ctx.gen_opc_pc[lj] = dc->ppc | 1;
3249 } else {
3250 tcg_ctx.gen_opc_pc[lj] = dc->pc;
3251 }
3252 tcg_ctx.gen_opc_instr_start[lj] = 1;
3253 tcg_ctx.gen_opc_icount[lj] = num_insns;
3254 }
3255
3256 /* Pretty disas. */
3257 LOG_DIS("%8.8x:\t", dc->pc);
3258
3259 if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO)) {
3260 gen_io_start();
3261 }
3262 dc->clear_x = 1;
3263
3264 insn_len = dc->decoder(env, dc);
3265 dc->ppc = dc->pc;
3266 dc->pc += insn_len;
3267 if (dc->clear_x) {
3268 cris_clear_x_flag(dc);
3269 }
3270
3271 num_insns++;
3272 /* Check for delayed branches here. If we do it before
3273 actually generating any host code, the simulator will just
3274 loop doing nothing for on this program location. */
3275 if (dc->delayed_branch) {
3276 dc->delayed_branch--;
3277 if (dc->delayed_branch == 0) {
3278 if (tb->flags & 7) {
3279 t_gen_mov_env_TN(dslot, tcg_const_tl(0));
3280 }
3281 if (dc->cpustate_changed || !dc->flagx_known
3282 || (dc->flags_x != (tb->flags & X_FLAG))) {
3283 cris_store_direct_jmp(dc);
3284 }
3285
3286 if (dc->clear_locked_irq) {
3287 dc->clear_locked_irq = 0;
3288 t_gen_mov_env_TN(locked_irq, tcg_const_tl(0));
3289 }
3290
3291 if (dc->jmp == JMP_DIRECT_CC) {
3292 int l1;
3293
3294 l1 = gen_new_label();
3295 cris_evaluate_flags(dc);
3296
3297 /* Conditional jmp. */
3298 tcg_gen_brcondi_tl(TCG_COND_EQ,
3299 env_btaken, 0, l1);
3300 gen_goto_tb(dc, 1, dc->jmp_pc);
3301 gen_set_label(l1);
3302 gen_goto_tb(dc, 0, dc->pc);
3303 dc->is_jmp = DISAS_TB_JUMP;
3304 dc->jmp = JMP_NOJMP;
3305 } else if (dc->jmp == JMP_DIRECT) {
3306 cris_evaluate_flags(dc);
3307 gen_goto_tb(dc, 0, dc->jmp_pc);
3308 dc->is_jmp = DISAS_TB_JUMP;
3309 dc->jmp = JMP_NOJMP;
3310 } else {
3311 t_gen_cc_jmp(env_btarget, tcg_const_tl(dc->pc));
3312 dc->is_jmp = DISAS_JUMP;
3313 }
3314 break;
3315 }
3316 }
3317
3318 /* If we are rexecuting a branch due to exceptions on
3319 delay slots dont break. */
3320 if (!(tb->pc & 1) && cs->singlestep_enabled) {
3321 break;
3322 }
3323 } while (!dc->is_jmp && !dc->cpustate_changed
3324 && tcg_ctx.gen_opc_ptr < gen_opc_end
3325 && !singlestep
3326 && (dc->pc < next_page_start)
3327 && num_insns < max_insns);
3328
3329 if (dc->clear_locked_irq) {
3330 t_gen_mov_env_TN(locked_irq, tcg_const_tl(0));
3331 }
3332
3333 npc = dc->pc;
3334
3335 if (tb->cflags & CF_LAST_IO)
3336 gen_io_end();
3337 /* Force an update if the per-tb cpu state has changed. */
3338 if (dc->is_jmp == DISAS_NEXT
3339 && (dc->cpustate_changed || !dc->flagx_known
3340 || (dc->flags_x != (tb->flags & X_FLAG)))) {
3341 dc->is_jmp = DISAS_UPDATE;
3342 tcg_gen_movi_tl(env_pc, npc);
3343 }
3344 /* Broken branch+delayslot sequence. */
3345 if (dc->delayed_branch == 1) {
3346 /* Set env->dslot to the size of the branch insn. */
3347 t_gen_mov_env_TN(dslot, tcg_const_tl(dc->pc - dc->ppc));
3348 cris_store_direct_jmp(dc);
3349 }
3350
3351 cris_evaluate_flags(dc);
3352
3353 if (unlikely(cs->singlestep_enabled)) {
3354 if (dc->is_jmp == DISAS_NEXT) {
3355 tcg_gen_movi_tl(env_pc, npc);
3356 }
3357 t_gen_raise_exception(EXCP_DEBUG);
3358 } else {
3359 switch (dc->is_jmp) {
3360 case DISAS_NEXT:
3361 gen_goto_tb(dc, 1, npc);
3362 break;
3363 default:
3364 case DISAS_JUMP:
3365 case DISAS_UPDATE:
3366 /* indicate that the hash table must be used
3367 to find the next TB */
3368 tcg_gen_exit_tb(0);
3369 break;
3370 case DISAS_SWI:
3371 case DISAS_TB_JUMP:
3372 /* nothing more to generate */
3373 break;
3374 }
3375 }
3376 gen_tb_end(tb, num_insns);
3377 *tcg_ctx.gen_opc_ptr = INDEX_op_end;
3378 if (search_pc) {
3379 j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
3380 lj++;
3381 while (lj <= j) {
3382 tcg_ctx.gen_opc_instr_start[lj++] = 0;
3383 }
3384 } else {
3385 tb->size = dc->pc - pc_start;
3386 tb->icount = num_insns;
3387 }
3388
3389 #ifdef DEBUG_DISAS
3390 #if !DISAS_CRIS
3391 if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
3392 log_target_disas(env, pc_start, dc->pc - pc_start,
3393 dc->env->pregs[PR_VR]);
3394 qemu_log("\nisize=%d osize=%td\n",
3395 dc->pc - pc_start, tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf);
3396 }
3397 #endif
3398 #endif
3399 }
3400
3401 void gen_intermediate_code (CPUCRISState *env, struct TranslationBlock *tb)
3402 {
3403 gen_intermediate_code_internal(cris_env_get_cpu(env), tb, false);
3404 }
3405
3406 void gen_intermediate_code_pc (CPUCRISState *env, struct TranslationBlock *tb)
3407 {
3408 gen_intermediate_code_internal(cris_env_get_cpu(env), tb, true);
3409 }
3410
3411 void cris_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf,
3412 int flags)
3413 {
3414 CRISCPU *cpu = CRIS_CPU(cs);
3415 CPUCRISState *env = &cpu->env;
3416 int i;
3417 uint32_t srs;
3418
3419 if (!env || !f) {
3420 return;
3421 }
3422
3423 cpu_fprintf(f, "PC=%x CCS=%x btaken=%d btarget=%x\n"
3424 "cc_op=%d cc_src=%d cc_dest=%d cc_result=%x cc_mask=%x\n",
3425 env->pc, env->pregs[PR_CCS], env->btaken, env->btarget,
3426 env->cc_op,
3427 env->cc_src, env->cc_dest, env->cc_result, env->cc_mask);
3428
3429
3430 for (i = 0; i < 16; i++) {
3431 cpu_fprintf(f, "%s=%8.8x ", regnames[i], env->regs[i]);
3432 if ((i + 1) % 4 == 0) {
3433 cpu_fprintf(f, "\n");
3434 }
3435 }
3436 cpu_fprintf(f, "\nspecial regs:\n");
3437 for (i = 0; i < 16; i++) {
3438 cpu_fprintf(f, "%s=%8.8x ", pregnames[i], env->pregs[i]);
3439 if ((i + 1) % 4 == 0) {
3440 cpu_fprintf(f, "\n");
3441 }
3442 }
3443 srs = env->pregs[PR_SRS];
3444 cpu_fprintf(f, "\nsupport function regs bank %x:\n", srs);
3445 if (srs < ARRAY_SIZE(env->sregs)) {
3446 for (i = 0; i < 16; i++) {
3447 cpu_fprintf(f, "s%2.2d=%8.8x ",
3448 i, env->sregs[srs][i]);
3449 if ((i + 1) % 4 == 0) {
3450 cpu_fprintf(f, "\n");
3451 }
3452 }
3453 }
3454 cpu_fprintf(f, "\n\n");
3455
3456 }
3457
3458 void cris_initialize_tcg(void)
3459 {
3460 int i;
3461
3462 cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
3463 cc_x = tcg_global_mem_new(TCG_AREG0,
3464 offsetof(CPUCRISState, cc_x), "cc_x");
3465 cc_src = tcg_global_mem_new(TCG_AREG0,
3466 offsetof(CPUCRISState, cc_src), "cc_src");
3467 cc_dest = tcg_global_mem_new(TCG_AREG0,
3468 offsetof(CPUCRISState, cc_dest),
3469 "cc_dest");
3470 cc_result = tcg_global_mem_new(TCG_AREG0,
3471 offsetof(CPUCRISState, cc_result),
3472 "cc_result");
3473 cc_op = tcg_global_mem_new(TCG_AREG0,
3474 offsetof(CPUCRISState, cc_op), "cc_op");
3475 cc_size = tcg_global_mem_new(TCG_AREG0,
3476 offsetof(CPUCRISState, cc_size),
3477 "cc_size");
3478 cc_mask = tcg_global_mem_new(TCG_AREG0,
3479 offsetof(CPUCRISState, cc_mask),
3480 "cc_mask");
3481
3482 env_pc = tcg_global_mem_new(TCG_AREG0,
3483 offsetof(CPUCRISState, pc),
3484 "pc");
3485 env_btarget = tcg_global_mem_new(TCG_AREG0,
3486 offsetof(CPUCRISState, btarget),
3487 "btarget");
3488 env_btaken = tcg_global_mem_new(TCG_AREG0,
3489 offsetof(CPUCRISState, btaken),
3490 "btaken");
3491 for (i = 0; i < 16; i++) {
3492 cpu_R[i] = tcg_global_mem_new(TCG_AREG0,
3493 offsetof(CPUCRISState, regs[i]),
3494 regnames[i]);
3495 }
3496 for (i = 0; i < 16; i++) {
3497 cpu_PR[i] = tcg_global_mem_new(TCG_AREG0,
3498 offsetof(CPUCRISState, pregs[i]),
3499 pregnames[i]);
3500 }
3501 }
3502
3503 void restore_state_to_opc(CPUCRISState *env, TranslationBlock *tb, int pc_pos)
3504 {
3505 env->pc = tcg_ctx.gen_opc_pc[pc_pos];
3506 }
QEmu