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s390x: remove s390-zipl.rom
[qemu/ar7.git] / target-cris / translate.c
blob2a283e03e2ab216214e1c583991fdf0b0d96dc68
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 "qemu/osdep.h"
27 #include "cpu.h"
28 #include "disas/disas.h"
29 #include "tcg-op.h"
30 #include "exec/helper-proto.h"
31 #include "mmu.h"
32 #include "exec/cpu_ldst.h"
33 #include "crisv32-decode.h"
34
35 #include "exec/helper-gen.h"
36
37 #include "trace-tcg.h"
38 #include "exec/log.h"
39
40
41 #define DISAS_CRIS 0
42 #if DISAS_CRIS
43 # define LOG_DIS(...) qemu_log_mask(CPU_LOG_TB_IN_ASM, ## __VA_ARGS__)
44 #else
45 # define LOG_DIS(...) do { } while (0)
46 #endif
47
48 #define D(x)
49 #define BUG() (gen_BUG(dc, __FILE__, __LINE__))
50 #define BUG_ON(x) ({if (x) BUG();})
51
52 #define DISAS_SWI 5
53
54 /* Used by the decoder. */
55 #define EXTRACT_FIELD(src, start, end) \
56 (((src) >> start) & ((1 << (end - start + 1)) - 1))
57
58 #define CC_MASK_NZ 0xc
59 #define CC_MASK_NZV 0xe
60 #define CC_MASK_NZVC 0xf
61 #define CC_MASK_RNZV 0x10e
62
63 static TCGv_ptr cpu_env;
64 static TCGv cpu_R[16];
65 static TCGv cpu_PR[16];
66 static TCGv cc_x;
67 static TCGv cc_src;
68 static TCGv cc_dest;
69 static TCGv cc_result;
70 static TCGv cc_op;
71 static TCGv cc_size;
72 static TCGv cc_mask;
73
74 static TCGv env_btaken;
75 static TCGv env_btarget;
76 static TCGv env_pc;
77
78 #include "exec/gen-icount.h"
79
80 /* This is the state at translation time. */
81 typedef struct DisasContext {
82 CRISCPU *cpu;
83 target_ulong pc, ppc;
84
85 /* Decoder. */
86 unsigned int (*decoder)(CPUCRISState *env, struct DisasContext *dc);
87 uint32_t ir;
88 uint32_t opcode;
89 unsigned int op1;
90 unsigned int op2;
91 unsigned int zsize, zzsize;
92 unsigned int mode;
93 unsigned int postinc;
94
95 unsigned int size;
96 unsigned int src;
97 unsigned int dst;
98 unsigned int cond;
99
100 int update_cc;
101 int cc_op;
102 int cc_size;
103 uint32_t cc_mask;
104
105 int cc_size_uptodate; /* -1 invalid or last written value. */
106
107 int cc_x_uptodate; /* 1 - ccs, 2 - known | X_FLAG. 0 not up-to-date. */
108 int flags_uptodate; /* Whether or not $ccs is up-to-date. */
109 int flagx_known; /* Whether or not flags_x has the x flag known at
110 translation time. */
111 int flags_x;
112
113 int clear_x; /* Clear x after this insn? */
114 int clear_prefix; /* Clear prefix after this insn? */
115 int clear_locked_irq; /* Clear the irq lockout. */
116 int cpustate_changed;
117 unsigned int tb_flags; /* tb dependent flags. */
118 int is_jmp;
119
120 #define JMP_NOJMP 0
121 #define JMP_DIRECT 1
122 #define JMP_DIRECT_CC 2
123 #define JMP_INDIRECT 3
124 int jmp; /* 0=nojmp, 1=direct, 2=indirect. */
125 uint32_t jmp_pc;
126
127 int delayed_branch;
128
129 struct TranslationBlock *tb;
130 int singlestep_enabled;
131 } DisasContext;
132
133 static void gen_BUG(DisasContext *dc, const char *file, int line)
134 {
135 fprintf(stderr, "BUG: pc=%x %s %d\n", dc->pc, file, line);
136 if (qemu_log_separate()) {
137 qemu_log("BUG: pc=%x %s %d\n", dc->pc, file, line);
138 }
139 cpu_abort(CPU(dc->cpu), "%s:%d\n", file, line);
140 }
141
142 static const char *regnames[] =
143 {
144 "$r0", "$r1", "$r2", "$r3",
145 "$r4", "$r5", "$r6", "$r7",
146 "$r8", "$r9", "$r10", "$r11",
147 "$r12", "$r13", "$sp", "$acr",
148 };
149 static const char *pregnames[] =
150 {
151 "$bz", "$vr", "$pid", "$srs",
152 "$wz", "$exs", "$eda", "$mof",
153 "$dz", "$ebp", "$erp", "$srp",
154 "$nrp", "$ccs", "$usp", "$spc",
155 };
156
157 /* We need this table to handle preg-moves with implicit width. */
158 static int preg_sizes[] = {
159 1, /* bz. */
160 1, /* vr. */
161 4, /* pid. */
162 1, /* srs. */
163 2, /* wz. */
164 4, 4, 4,
165 4, 4, 4, 4,
166 4, 4, 4, 4,
167 };
168
169 #define t_gen_mov_TN_env(tn, member) \
170 tcg_gen_ld_tl(tn, cpu_env, offsetof(CPUCRISState, member))
171 #define t_gen_mov_env_TN(member, tn) \
172 tcg_gen_st_tl(tn, cpu_env, offsetof(CPUCRISState, member))
173
174 static inline void t_gen_mov_TN_preg(TCGv tn, int r)
175 {
176 assert(r >= 0 && r <= 15);
177 if (r == PR_BZ || r == PR_WZ || r == PR_DZ) {
178 tcg_gen_mov_tl(tn, tcg_const_tl(0));
179 } else if (r == PR_VR) {
180 tcg_gen_mov_tl(tn, tcg_const_tl(32));
181 } else {
182 tcg_gen_mov_tl(tn, cpu_PR[r]);
183 }
184 }
185 static inline void t_gen_mov_preg_TN(DisasContext *dc, int r, TCGv tn)
186 {
187 assert(r >= 0 && r <= 15);
188 if (r == PR_BZ || r == PR_WZ || r == PR_DZ) {
189 return;
190 } else if (r == PR_SRS) {
191 tcg_gen_andi_tl(cpu_PR[r], tn, 3);
192 } else {
193 if (r == PR_PID) {
194 gen_helper_tlb_flush_pid(cpu_env, tn);
195 }
196 if (dc->tb_flags & S_FLAG && r == PR_SPC) {
197 gen_helper_spc_write(cpu_env, tn);
198 } else if (r == PR_CCS) {
199 dc->cpustate_changed = 1;
200 }
201 tcg_gen_mov_tl(cpu_PR[r], tn);
202 }
203 }
204
205 /* Sign extend at translation time. */
206 static int sign_extend(unsigned int val, unsigned int width)
207 {
208 int sval;
209
210 /* LSL. */
211 val <<= 31 - width;
212 sval = val;
213 /* ASR. */
214 sval >>= 31 - width;
215 return sval;
216 }
217
218 static int cris_fetch(CPUCRISState *env, DisasContext *dc, uint32_t addr,
219 unsigned int size, unsigned int sign)
220 {
221 int r;
222
223 switch (size) {
224 case 4:
225 {
226 r = cpu_ldl_code(env, addr);
227 break;
228 }
229 case 2:
230 {
231 if (sign) {
232 r = cpu_ldsw_code(env, addr);
233 } else {
234 r = cpu_lduw_code(env, addr);
235 }
236 break;
237 }
238 case 1:
239 {
240 if (sign) {
241 r = cpu_ldsb_code(env, addr);
242 } else {
243 r = cpu_ldub_code(env, addr);
244 }
245 break;
246 }
247 default:
248 cpu_abort(CPU(dc->cpu), "Invalid fetch size %d\n", size);
249 break;
250 }
251 return r;
252 }
253
254 static void cris_lock_irq(DisasContext *dc)
255 {
256 dc->clear_locked_irq = 0;
257 t_gen_mov_env_TN(locked_irq, tcg_const_tl(1));
258 }
259
260 static inline void t_gen_raise_exception(uint32_t index)
261 {
262 TCGv_i32 tmp = tcg_const_i32(index);
263 gen_helper_raise_exception(cpu_env, tmp);
264 tcg_temp_free_i32(tmp);
265 }
266
267 static void t_gen_lsl(TCGv d, TCGv a, TCGv b)
268 {
269 TCGv t0, t_31;
270
271 t0 = tcg_temp_new();
272 t_31 = tcg_const_tl(31);
273 tcg_gen_shl_tl(d, a, b);
274
275 tcg_gen_sub_tl(t0, t_31, b);
276 tcg_gen_sar_tl(t0, t0, t_31);
277 tcg_gen_and_tl(t0, t0, d);
278 tcg_gen_xor_tl(d, d, t0);
279 tcg_temp_free(t0);
280 tcg_temp_free(t_31);
281 }
282
283 static void t_gen_lsr(TCGv d, TCGv a, TCGv b)
284 {
285 TCGv t0, t_31;
286
287 t0 = tcg_temp_new();
288 t_31 = tcg_temp_new();
289 tcg_gen_shr_tl(d, a, b);
290
291 tcg_gen_movi_tl(t_31, 31);
292 tcg_gen_sub_tl(t0, t_31, b);
293 tcg_gen_sar_tl(t0, t0, t_31);
294 tcg_gen_and_tl(t0, t0, d);
295 tcg_gen_xor_tl(d, d, t0);
296 tcg_temp_free(t0);
297 tcg_temp_free(t_31);
298 }
299
300 static void t_gen_asr(TCGv d, TCGv a, TCGv b)
301 {
302 TCGv t0, t_31;
303
304 t0 = tcg_temp_new();
305 t_31 = tcg_temp_new();
306 tcg_gen_sar_tl(d, a, b);
307
308 tcg_gen_movi_tl(t_31, 31);
309 tcg_gen_sub_tl(t0, t_31, b);
310 tcg_gen_sar_tl(t0, t0, t_31);
311 tcg_gen_or_tl(d, d, t0);
312 tcg_temp_free(t0);
313 tcg_temp_free(t_31);
314 }
315
316 static void t_gen_cris_dstep(TCGv d, TCGv a, TCGv b)
317 {
318 TCGv t = tcg_temp_new();
319
320 /*
321 * d <<= 1
322 * if (d >= s)
323 * d -= s;
324 */
325 tcg_gen_shli_tl(d, a, 1);
326 tcg_gen_sub_tl(t, d, b);
327 tcg_gen_movcond_tl(TCG_COND_GEU, d, d, b, t, d);
328 tcg_temp_free(t);
329 }
330
331 static void t_gen_cris_mstep(TCGv d, TCGv a, TCGv b, TCGv ccs)
332 {
333 TCGv t;
334
335 /*
336 * d <<= 1
337 * if (n)
338 * d += s;
339 */
340 t = tcg_temp_new();
341 tcg_gen_shli_tl(d, a, 1);
342 tcg_gen_shli_tl(t, ccs, 31 - 3);
343 tcg_gen_sari_tl(t, t, 31);
344 tcg_gen_and_tl(t, t, b);
345 tcg_gen_add_tl(d, d, t);
346 tcg_temp_free(t);
347 }
348
349 /* Extended arithmetics on CRIS. */
350 static inline void t_gen_add_flag(TCGv d, int flag)
351 {
352 TCGv c;
353
354 c = tcg_temp_new();
355 t_gen_mov_TN_preg(c, PR_CCS);
356 /* Propagate carry into d. */
357 tcg_gen_andi_tl(c, c, 1 << flag);
358 if (flag) {
359 tcg_gen_shri_tl(c, c, flag);
360 }
361 tcg_gen_add_tl(d, d, c);
362 tcg_temp_free(c);
363 }
364
365 static inline void t_gen_addx_carry(DisasContext *dc, TCGv d)
366 {
367 if (dc->flagx_known) {
368 if (dc->flags_x) {
369 TCGv c;
370
371 c = tcg_temp_new();
372 t_gen_mov_TN_preg(c, PR_CCS);
373 /* C flag is already at bit 0. */
374 tcg_gen_andi_tl(c, c, C_FLAG);
375 tcg_gen_add_tl(d, d, c);
376 tcg_temp_free(c);
377 }
378 } else {
379 TCGv x, c;
380
381 x = tcg_temp_new();
382 c = tcg_temp_new();
383 t_gen_mov_TN_preg(x, PR_CCS);
384 tcg_gen_mov_tl(c, x);
385
386 /* Propagate carry into d if X is set. Branch free. */
387 tcg_gen_andi_tl(c, c, C_FLAG);
388 tcg_gen_andi_tl(x, x, X_FLAG);
389 tcg_gen_shri_tl(x, x, 4);
390
391 tcg_gen_and_tl(x, x, c);
392 tcg_gen_add_tl(d, d, x);
393 tcg_temp_free(x);
394 tcg_temp_free(c);
395 }
396 }
397
398 static inline void t_gen_subx_carry(DisasContext *dc, TCGv d)
399 {
400 if (dc->flagx_known) {
401 if (dc->flags_x) {
402 TCGv c;
403
404 c = tcg_temp_new();
405 t_gen_mov_TN_preg(c, PR_CCS);
406 /* C flag is already at bit 0. */
407 tcg_gen_andi_tl(c, c, C_FLAG);
408 tcg_gen_sub_tl(d, d, c);
409 tcg_temp_free(c);
410 }
411 } else {
412 TCGv x, c;
413
414 x = tcg_temp_new();
415 c = tcg_temp_new();
416 t_gen_mov_TN_preg(x, PR_CCS);
417 tcg_gen_mov_tl(c, x);
418
419 /* Propagate carry into d if X is set. Branch free. */
420 tcg_gen_andi_tl(c, c, C_FLAG);
421 tcg_gen_andi_tl(x, x, X_FLAG);
422 tcg_gen_shri_tl(x, x, 4);
423
424 tcg_gen_and_tl(x, x, c);
425 tcg_gen_sub_tl(d, d, x);
426 tcg_temp_free(x);
427 tcg_temp_free(c);
428 }
429 }
430
431 /* Swap the two bytes within each half word of the s operand.
432 T0 = ((T0 << 8) & 0xff00ff00) | ((T0 >> 8) & 0x00ff00ff) */
433 static inline void t_gen_swapb(TCGv d, TCGv s)
434 {
435 TCGv t, org_s;
436
437 t = tcg_temp_new();
438 org_s = tcg_temp_new();
439
440 /* d and s may refer to the same object. */
441 tcg_gen_mov_tl(org_s, s);
442 tcg_gen_shli_tl(t, org_s, 8);
443 tcg_gen_andi_tl(d, t, 0xff00ff00);
444 tcg_gen_shri_tl(t, org_s, 8);
445 tcg_gen_andi_tl(t, t, 0x00ff00ff);
446 tcg_gen_or_tl(d, d, t);
447 tcg_temp_free(t);
448 tcg_temp_free(org_s);
449 }
450
451 /* Swap the halfwords of the s operand. */
452 static inline void t_gen_swapw(TCGv d, TCGv s)
453 {
454 TCGv t;
455 /* d and s refer the same object. */
456 t = tcg_temp_new();
457 tcg_gen_mov_tl(t, s);
458 tcg_gen_shli_tl(d, t, 16);
459 tcg_gen_shri_tl(t, t, 16);
460 tcg_gen_or_tl(d, d, t);
461 tcg_temp_free(t);
462 }
463
464 /* Reverse the within each byte.
465 T0 = (((T0 << 7) & 0x80808080) |
466 ((T0 << 5) & 0x40404040) |
467 ((T0 << 3) & 0x20202020) |
468 ((T0 << 1) & 0x10101010) |
469 ((T0 >> 1) & 0x08080808) |
470 ((T0 >> 3) & 0x04040404) |
471 ((T0 >> 5) & 0x02020202) |
472 ((T0 >> 7) & 0x01010101));
473 */
474 static inline void t_gen_swapr(TCGv d, TCGv s)
475 {
476 struct {
477 int shift; /* LSL when positive, LSR when negative. */
478 uint32_t mask;
479 } bitrev[] = {
480 {7, 0x80808080},
481 {5, 0x40404040},
482 {3, 0x20202020},
483 {1, 0x10101010},
484 {-1, 0x08080808},
485 {-3, 0x04040404},
486 {-5, 0x02020202},
487 {-7, 0x01010101}
488 };
489 int i;
490 TCGv t, org_s;
491
492 /* d and s refer the same object. */
493 t = tcg_temp_new();
494 org_s = tcg_temp_new();
495 tcg_gen_mov_tl(org_s, s);
496
497 tcg_gen_shli_tl(t, org_s, bitrev[0].shift);
498 tcg_gen_andi_tl(d, t, bitrev[0].mask);
499 for (i = 1; i < ARRAY_SIZE(bitrev); i++) {
500 if (bitrev[i].shift >= 0) {
501 tcg_gen_shli_tl(t, org_s, bitrev[i].shift);
502 } else {
503 tcg_gen_shri_tl(t, org_s, -bitrev[i].shift);
504 }
505 tcg_gen_andi_tl(t, t, bitrev[i].mask);
506 tcg_gen_or_tl(d, d, t);
507 }
508 tcg_temp_free(t);
509 tcg_temp_free(org_s);
510 }
511
512 static void t_gen_cc_jmp(TCGv pc_true, TCGv pc_false)
513 {
514 TCGLabel *l1 = gen_new_label();
515
516 /* Conditional jmp. */
517 tcg_gen_mov_tl(env_pc, pc_false);
518 tcg_gen_brcondi_tl(TCG_COND_EQ, env_btaken, 0, l1);
519 tcg_gen_mov_tl(env_pc, pc_true);
520 gen_set_label(l1);
521 }
522
523 static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest)
524 {
525 TranslationBlock *tb;
526 tb = dc->tb;
527 if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) {
528 tcg_gen_goto_tb(n);
529 tcg_gen_movi_tl(env_pc, dest);
530 tcg_gen_exit_tb((uintptr_t)tb + n);
531 } else {
532 tcg_gen_movi_tl(env_pc, dest);
533 tcg_gen_exit_tb(0);
534 }
535 }
536
537 static inline void cris_clear_x_flag(DisasContext *dc)
538 {
539 if (dc->flagx_known && dc->flags_x) {
540 dc->flags_uptodate = 0;
541 }
542
543 dc->flagx_known = 1;
544 dc->flags_x = 0;
545 }
546
547 static void cris_flush_cc_state(DisasContext *dc)
548 {
549 if (dc->cc_size_uptodate != dc->cc_size) {
550 tcg_gen_movi_tl(cc_size, dc->cc_size);
551 dc->cc_size_uptodate = dc->cc_size;
552 }
553 tcg_gen_movi_tl(cc_op, dc->cc_op);
554 tcg_gen_movi_tl(cc_mask, dc->cc_mask);
555 }
556
557 static void cris_evaluate_flags(DisasContext *dc)
558 {
559 if (dc->flags_uptodate) {
560 return;
561 }
562
563 cris_flush_cc_state(dc);
564
565 switch (dc->cc_op) {
566 case CC_OP_MCP:
567 gen_helper_evaluate_flags_mcp(cpu_PR[PR_CCS], cpu_env,
568 cpu_PR[PR_CCS], cc_src,
569 cc_dest, cc_result);
570 break;
571 case CC_OP_MULS:
572 gen_helper_evaluate_flags_muls(cpu_PR[PR_CCS], cpu_env,
573 cpu_PR[PR_CCS], cc_result,
574 cpu_PR[PR_MOF]);
575 break;
576 case CC_OP_MULU:
577 gen_helper_evaluate_flags_mulu(cpu_PR[PR_CCS], cpu_env,
578 cpu_PR[PR_CCS], cc_result,
579 cpu_PR[PR_MOF]);
580 break;
581 case CC_OP_MOVE:
582 case CC_OP_AND:
583 case CC_OP_OR:
584 case CC_OP_XOR:
585 case CC_OP_ASR:
586 case CC_OP_LSR:
587 case CC_OP_LSL:
588 switch (dc->cc_size) {
589 case 4:
590 gen_helper_evaluate_flags_move_4(cpu_PR[PR_CCS],
591 cpu_env, cpu_PR[PR_CCS], cc_result);
592 break;
593 case 2:
594 gen_helper_evaluate_flags_move_2(cpu_PR[PR_CCS],
595 cpu_env, cpu_PR[PR_CCS], cc_result);
596 break;
597 default:
598 gen_helper_evaluate_flags(cpu_env);
599 break;
600 }
601 break;
602 case CC_OP_FLAGS:
603 /* live. */
604 break;
605 case CC_OP_SUB:
606 case CC_OP_CMP:
607 if (dc->cc_size == 4) {
608 gen_helper_evaluate_flags_sub_4(cpu_PR[PR_CCS], cpu_env,
609 cpu_PR[PR_CCS], cc_src, cc_dest, cc_result);
610 } else {
611 gen_helper_evaluate_flags(cpu_env);
612 }
613
614 break;
615 default:
616 switch (dc->cc_size) {
617 case 4:
618 gen_helper_evaluate_flags_alu_4(cpu_PR[PR_CCS], cpu_env,
619 cpu_PR[PR_CCS], cc_src, cc_dest, cc_result);
620 break;
621 default:
622 gen_helper_evaluate_flags(cpu_env);
623 break;
624 }
625 break;
626 }
627
628 if (dc->flagx_known) {
629 if (dc->flags_x) {
630 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], X_FLAG);
631 } else if (dc->cc_op == CC_OP_FLAGS) {
632 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~X_FLAG);
633 }
634 }
635 dc->flags_uptodate = 1;
636 }
637
638 static void cris_cc_mask(DisasContext *dc, unsigned int mask)
639 {
640 uint32_t ovl;
641
642 if (!mask) {
643 dc->update_cc = 0;
644 return;
645 }
646
647 /* Check if we need to evaluate the condition codes due to
648 CC overlaying. */
649 ovl = (dc->cc_mask ^ mask) & ~mask;
650 if (ovl) {
651 /* TODO: optimize this case. It trigs all the time. */
652 cris_evaluate_flags(dc);
653 }
654 dc->cc_mask = mask;
655 dc->update_cc = 1;
656 }
657
658 static void cris_update_cc_op(DisasContext *dc, int op, int size)
659 {
660 dc->cc_op = op;
661 dc->cc_size = size;
662 dc->flags_uptodate = 0;
663 }
664
665 static inline void cris_update_cc_x(DisasContext *dc)
666 {
667 /* Save the x flag state at the time of the cc snapshot. */
668 if (dc->flagx_known) {
669 if (dc->cc_x_uptodate == (2 | dc->flags_x)) {
670 return;
671 }
672 tcg_gen_movi_tl(cc_x, dc->flags_x);
673 dc->cc_x_uptodate = 2 | dc->flags_x;
674 } else {
675 tcg_gen_andi_tl(cc_x, cpu_PR[PR_CCS], X_FLAG);
676 dc->cc_x_uptodate = 1;
677 }
678 }
679
680 /* Update cc prior to executing ALU op. Needs source operands untouched. */
681 static void cris_pre_alu_update_cc(DisasContext *dc, int op,
682 TCGv dst, TCGv src, int size)
683 {
684 if (dc->update_cc) {
685 cris_update_cc_op(dc, op, size);
686 tcg_gen_mov_tl(cc_src, src);
687
688 if (op != CC_OP_MOVE
689 && op != CC_OP_AND
690 && op != CC_OP_OR
691 && op != CC_OP_XOR
692 && op != CC_OP_ASR
693 && op != CC_OP_LSR
694 && op != CC_OP_LSL) {
695 tcg_gen_mov_tl(cc_dest, dst);
696 }
697
698 cris_update_cc_x(dc);
699 }
700 }
701
702 /* Update cc after executing ALU op. needs the result. */
703 static inline void cris_update_result(DisasContext *dc, TCGv res)
704 {
705 if (dc->update_cc) {
706 tcg_gen_mov_tl(cc_result, res);
707 }
708 }
709
710 /* Returns one if the write back stage should execute. */
711 static void cris_alu_op_exec(DisasContext *dc, int op,
712 TCGv dst, TCGv a, TCGv b, int size)
713 {
714 /* Emit the ALU insns. */
715 switch (op) {
716 case CC_OP_ADD:
717 tcg_gen_add_tl(dst, a, b);
718 /* Extended arithmetics. */
719 t_gen_addx_carry(dc, dst);
720 break;
721 case CC_OP_ADDC:
722 tcg_gen_add_tl(dst, a, b);
723 t_gen_add_flag(dst, 0); /* C_FLAG. */
724 break;
725 case CC_OP_MCP:
726 tcg_gen_add_tl(dst, a, b);
727 t_gen_add_flag(dst, 8); /* R_FLAG. */
728 break;
729 case CC_OP_SUB:
730 tcg_gen_sub_tl(dst, a, b);
731 /* Extended arithmetics. */
732 t_gen_subx_carry(dc, dst);
733 break;
734 case CC_OP_MOVE:
735 tcg_gen_mov_tl(dst, b);
736 break;
737 case CC_OP_OR:
738 tcg_gen_or_tl(dst, a, b);
739 break;
740 case CC_OP_AND:
741 tcg_gen_and_tl(dst, a, b);
742 break;
743 case CC_OP_XOR:
744 tcg_gen_xor_tl(dst, a, b);
745 break;
746 case CC_OP_LSL:
747 t_gen_lsl(dst, a, b);
748 break;
749 case CC_OP_LSR:
750 t_gen_lsr(dst, a, b);
751 break;
752 case CC_OP_ASR:
753 t_gen_asr(dst, a, b);
754 break;
755 case CC_OP_NEG:
756 tcg_gen_neg_tl(dst, b);
757 /* Extended arithmetics. */
758 t_gen_subx_carry(dc, dst);
759 break;
760 case CC_OP_LZ:
761 gen_helper_lz(dst, b);
762 break;
763 case CC_OP_MULS:
764 tcg_gen_muls2_tl(dst, cpu_PR[PR_MOF], a, b);
765 break;
766 case CC_OP_MULU:
767 tcg_gen_mulu2_tl(dst, cpu_PR[PR_MOF], a, b);
768 break;
769 case CC_OP_DSTEP:
770 t_gen_cris_dstep(dst, a, b);
771 break;
772 case CC_OP_MSTEP:
773 t_gen_cris_mstep(dst, a, b, cpu_PR[PR_CCS]);
774 break;
775 case CC_OP_BOUND:
776 tcg_gen_movcond_tl(TCG_COND_LEU, dst, a, b, a, b);
777 break;
778 case CC_OP_CMP:
779 tcg_gen_sub_tl(dst, a, b);
780 /* Extended arithmetics. */
781 t_gen_subx_carry(dc, dst);
782 break;
783 default:
784 qemu_log_mask(LOG_GUEST_ERROR, "illegal ALU op.\n");
785 BUG();
786 break;
787 }
788
789 if (size == 1) {
790 tcg_gen_andi_tl(dst, dst, 0xff);
791 } else if (size == 2) {
792 tcg_gen_andi_tl(dst, dst, 0xffff);
793 }
794 }
795
796 static void cris_alu(DisasContext *dc, int op,
797 TCGv d, TCGv op_a, TCGv op_b, int size)
798 {
799 TCGv tmp;
800 int writeback;
801
802 writeback = 1;
803
804 if (op == CC_OP_CMP) {
805 tmp = tcg_temp_new();
806 writeback = 0;
807 } else if (size == 4) {
808 tmp = d;
809 writeback = 0;
810 } else {
811 tmp = tcg_temp_new();
812 }
813
814
815 cris_pre_alu_update_cc(dc, op, op_a, op_b, size);
816 cris_alu_op_exec(dc, op, tmp, op_a, op_b, size);
817 cris_update_result(dc, tmp);
818
819 /* Writeback. */
820 if (writeback) {
821 if (size == 1) {
822 tcg_gen_andi_tl(d, d, ~0xff);
823 } else {
824 tcg_gen_andi_tl(d, d, ~0xffff);
825 }
826 tcg_gen_or_tl(d, d, tmp);
827 }
828 if (!TCGV_EQUAL(tmp, d)) {
829 tcg_temp_free(tmp);
830 }
831 }
832
833 static int arith_cc(DisasContext *dc)
834 {
835 if (dc->update_cc) {
836 switch (dc->cc_op) {
837 case CC_OP_ADDC: return 1;
838 case CC_OP_ADD: return 1;
839 case CC_OP_SUB: return 1;
840 case CC_OP_DSTEP: return 1;
841 case CC_OP_LSL: return 1;
842 case CC_OP_LSR: return 1;
843 case CC_OP_ASR: return 1;
844 case CC_OP_CMP: return 1;
845 case CC_OP_NEG: return 1;
846 case CC_OP_OR: return 1;
847 case CC_OP_AND: return 1;
848 case CC_OP_XOR: return 1;
849 case CC_OP_MULU: return 1;
850 case CC_OP_MULS: return 1;
851 default:
852 return 0;
853 }
854 }
855 return 0;
856 }
857
858 static void gen_tst_cc (DisasContext *dc, TCGv cc, int cond)
859 {
860 int arith_opt, move_opt;
861
862 /* TODO: optimize more condition codes. */
863
864 /*
865 * If the flags are live, we've gotta look into the bits of CCS.
866 * Otherwise, if we just did an arithmetic operation we try to
867 * evaluate the condition code faster.
868 *
869 * When this function is done, T0 should be non-zero if the condition
870 * code is true.
871 */
872 arith_opt = arith_cc(dc) && !dc->flags_uptodate;
873 move_opt = (dc->cc_op == CC_OP_MOVE);
874 switch (cond) {
875 case CC_EQ:
876 if ((arith_opt || move_opt)
877 && dc->cc_x_uptodate != (2 | X_FLAG)) {
878 tcg_gen_setcond_tl(TCG_COND_EQ, cc,
879 cc_result, tcg_const_tl(0));
880 } else {
881 cris_evaluate_flags(dc);
882 tcg_gen_andi_tl(cc,
883 cpu_PR[PR_CCS], Z_FLAG);
884 }
885 break;
886 case CC_NE:
887 if ((arith_opt || move_opt)
888 && dc->cc_x_uptodate != (2 | X_FLAG)) {
889 tcg_gen_mov_tl(cc, cc_result);
890 } else {
891 cris_evaluate_flags(dc);
892 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
893 Z_FLAG);
894 tcg_gen_andi_tl(cc, cc, Z_FLAG);
895 }
896 break;
897 case CC_CS:
898 cris_evaluate_flags(dc);
899 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], C_FLAG);
900 break;
901 case CC_CC:
902 cris_evaluate_flags(dc);
903 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], C_FLAG);
904 tcg_gen_andi_tl(cc, cc, C_FLAG);
905 break;
906 case CC_VS:
907 cris_evaluate_flags(dc);
908 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], V_FLAG);
909 break;
910 case CC_VC:
911 cris_evaluate_flags(dc);
912 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
913 V_FLAG);
914 tcg_gen_andi_tl(cc, cc, V_FLAG);
915 break;
916 case CC_PL:
917 if (arith_opt || move_opt) {
918 int bits = 31;
919
920 if (dc->cc_size == 1) {
921 bits = 7;
922 } else if (dc->cc_size == 2) {
923 bits = 15;
924 }
925
926 tcg_gen_shri_tl(cc, cc_result, bits);
927 tcg_gen_xori_tl(cc, cc, 1);
928 } else {
929 cris_evaluate_flags(dc);
930 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
931 N_FLAG);
932 tcg_gen_andi_tl(cc, cc, N_FLAG);
933 }
934 break;
935 case CC_MI:
936 if (arith_opt || move_opt) {
937 int bits = 31;
938
939 if (dc->cc_size == 1) {
940 bits = 7;
941 } else if (dc->cc_size == 2) {
942 bits = 15;
943 }
944
945 tcg_gen_shri_tl(cc, cc_result, bits);
946 tcg_gen_andi_tl(cc, cc, 1);
947 } else {
948 cris_evaluate_flags(dc);
949 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS],
950 N_FLAG);
951 }
952 break;
953 case CC_LS:
954 cris_evaluate_flags(dc);
955 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS],
956 C_FLAG | Z_FLAG);
957 break;
958 case CC_HI:
959 cris_evaluate_flags(dc);
960 {
961 TCGv tmp;
962
963 tmp = tcg_temp_new();
964 tcg_gen_xori_tl(tmp, cpu_PR[PR_CCS],
965 C_FLAG | Z_FLAG);
966 /* Overlay the C flag on top of the Z. */
967 tcg_gen_shli_tl(cc, tmp, 2);
968 tcg_gen_and_tl(cc, tmp, cc);
969 tcg_gen_andi_tl(cc, cc, Z_FLAG);
970
971 tcg_temp_free(tmp);
972 }
973 break;
974 case CC_GE:
975 cris_evaluate_flags(dc);
976 /* Overlay the V flag on top of the N. */
977 tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2);
978 tcg_gen_xor_tl(cc,
979 cpu_PR[PR_CCS], cc);
980 tcg_gen_andi_tl(cc, cc, N_FLAG);
981 tcg_gen_xori_tl(cc, cc, N_FLAG);
982 break;
983 case CC_LT:
984 cris_evaluate_flags(dc);
985 /* Overlay the V flag on top of the N. */
986 tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2);
987 tcg_gen_xor_tl(cc,
988 cpu_PR[PR_CCS], cc);
989 tcg_gen_andi_tl(cc, cc, N_FLAG);
990 break;
991 case CC_GT:
992 cris_evaluate_flags(dc);
993 {
994 TCGv n, z;
995
996 n = tcg_temp_new();
997 z = tcg_temp_new();
998
999 /* To avoid a shift we overlay everything on
1000 the V flag. */
1001 tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2);
1002 tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1);
1003 /* invert Z. */
1004 tcg_gen_xori_tl(z, z, 2);
1005
1006 tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]);
1007 tcg_gen_xori_tl(n, n, 2);
1008 tcg_gen_and_tl(cc, z, n);
1009 tcg_gen_andi_tl(cc, cc, 2);
1010
1011 tcg_temp_free(n);
1012 tcg_temp_free(z);
1013 }
1014 break;
1015 case CC_LE:
1016 cris_evaluate_flags(dc);
1017 {
1018 TCGv n, z;
1019
1020 n = tcg_temp_new();
1021 z = tcg_temp_new();
1022
1023 /* To avoid a shift we overlay everything on
1024 the V flag. */
1025 tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2);
1026 tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1);
1027
1028 tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]);
1029 tcg_gen_or_tl(cc, z, n);
1030 tcg_gen_andi_tl(cc, cc, 2);
1031
1032 tcg_temp_free(n);
1033 tcg_temp_free(z);
1034 }
1035 break;
1036 case CC_P:
1037 cris_evaluate_flags(dc);
1038 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], P_FLAG);
1039 break;
1040 case CC_A:
1041 tcg_gen_movi_tl(cc, 1);
1042 break;
1043 default:
1044 BUG();
1045 break;
1046 };
1047 }
1048
1049 static void cris_store_direct_jmp(DisasContext *dc)
1050 {
1051 /* Store the direct jmp state into the cpu-state. */
1052 if (dc->jmp == JMP_DIRECT || dc->jmp == JMP_DIRECT_CC) {
1053 if (dc->jmp == JMP_DIRECT) {
1054 tcg_gen_movi_tl(env_btaken, 1);
1055 }
1056 tcg_gen_movi_tl(env_btarget, dc->jmp_pc);
1057 dc->jmp = JMP_INDIRECT;
1058 }
1059 }
1060
1061 static void cris_prepare_cc_branch (DisasContext *dc,
1062 int offset, int cond)
1063 {
1064 /* This helps us re-schedule the micro-code to insns in delay-slots
1065 before the actual jump. */
1066 dc->delayed_branch = 2;
1067 dc->jmp = JMP_DIRECT_CC;
1068 dc->jmp_pc = dc->pc + offset;
1069
1070 gen_tst_cc(dc, env_btaken, cond);
1071 tcg_gen_movi_tl(env_btarget, dc->jmp_pc);
1072 }
1073
1074
1075 /* jumps, when the dest is in a live reg for example. Direct should be set
1076 when the dest addr is constant to allow tb chaining. */
1077 static inline void cris_prepare_jmp (DisasContext *dc, unsigned int type)
1078 {
1079 /* This helps us re-schedule the micro-code to insns in delay-slots
1080 before the actual jump. */
1081 dc->delayed_branch = 2;
1082 dc->jmp = type;
1083 if (type == JMP_INDIRECT) {
1084 tcg_gen_movi_tl(env_btaken, 1);
1085 }
1086 }
1087
1088 static void gen_load64(DisasContext *dc, TCGv_i64 dst, TCGv addr)
1089 {
1090 int mem_index = cpu_mmu_index(&dc->cpu->env, false);
1091
1092 /* If we get a fault on a delayslot we must keep the jmp state in
1093 the cpu-state to be able to re-execute the jmp. */
1094 if (dc->delayed_branch == 1) {
1095 cris_store_direct_jmp(dc);
1096 }
1097
1098 tcg_gen_qemu_ld_i64(dst, addr, mem_index, MO_TEQ);
1099 }
1100
1101 static void gen_load(DisasContext *dc, TCGv dst, TCGv addr,
1102 unsigned int size, int sign)
1103 {
1104 int mem_index = cpu_mmu_index(&dc->cpu->env, false);
1105
1106 /* If we get a fault on a delayslot we must keep the jmp state in
1107 the cpu-state to be able to re-execute the jmp. */
1108 if (dc->delayed_branch == 1) {
1109 cris_store_direct_jmp(dc);
1110 }
1111
1112 tcg_gen_qemu_ld_tl(dst, addr, mem_index,
1113 MO_TE + ctz32(size) + (sign ? MO_SIGN : 0));
1114 }
1115
1116 static void gen_store (DisasContext *dc, TCGv addr, TCGv val,
1117 unsigned int size)
1118 {
1119 int mem_index = cpu_mmu_index(&dc->cpu->env, false);
1120
1121 /* If we get a fault on a delayslot we must keep the jmp state in
1122 the cpu-state to be able to re-execute the jmp. */
1123 if (dc->delayed_branch == 1) {
1124 cris_store_direct_jmp(dc);
1125 }
1126
1127
1128 /* Conditional writes. We only support the kind were X and P are known
1129 at translation time. */
1130 if (dc->flagx_known && dc->flags_x && (dc->tb_flags & P_FLAG)) {
1131 dc->postinc = 0;
1132 cris_evaluate_flags(dc);
1133 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], C_FLAG);
1134 return;
1135 }
1136
1137 tcg_gen_qemu_st_tl(val, addr, mem_index, MO_TE + ctz32(size));
1138
1139 if (dc->flagx_known && dc->flags_x) {
1140 cris_evaluate_flags(dc);
1141 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~C_FLAG);
1142 }
1143 }
1144
1145 static inline void t_gen_sext(TCGv d, TCGv s, int size)
1146 {
1147 if (size == 1) {
1148 tcg_gen_ext8s_i32(d, s);
1149 } else if (size == 2) {
1150 tcg_gen_ext16s_i32(d, s);
1151 } else if (!TCGV_EQUAL(d, s)) {
1152 tcg_gen_mov_tl(d, s);
1153 }
1154 }
1155
1156 static inline void t_gen_zext(TCGv d, TCGv s, int size)
1157 {
1158 if (size == 1) {
1159 tcg_gen_ext8u_i32(d, s);
1160 } else if (size == 2) {
1161 tcg_gen_ext16u_i32(d, s);
1162 } else if (!TCGV_EQUAL(d, s)) {
1163 tcg_gen_mov_tl(d, s);
1164 }
1165 }
1166
1167 #if DISAS_CRIS
1168 static char memsize_char(int size)
1169 {
1170 switch (size) {
1171 case 1: return 'b'; break;
1172 case 2: return 'w'; break;
1173 case 4: return 'd'; break;
1174 default:
1175 return 'x';
1176 break;
1177 }
1178 }
1179 #endif
1180
1181 static inline unsigned int memsize_z(DisasContext *dc)
1182 {
1183 return dc->zsize + 1;
1184 }
1185
1186 static inline unsigned int memsize_zz(DisasContext *dc)
1187 {
1188 switch (dc->zzsize) {
1189 case 0: return 1;
1190 case 1: return 2;
1191 default:
1192 return 4;
1193 }
1194 }
1195
1196 static inline void do_postinc (DisasContext *dc, int size)
1197 {
1198 if (dc->postinc) {
1199 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], size);
1200 }
1201 }
1202
1203 static inline void dec_prep_move_r(DisasContext *dc, int rs, int rd,
1204 int size, int s_ext, TCGv dst)
1205 {
1206 if (s_ext) {
1207 t_gen_sext(dst, cpu_R[rs], size);
1208 } else {
1209 t_gen_zext(dst, cpu_R[rs], size);
1210 }
1211 }
1212
1213 /* Prepare T0 and T1 for a register alu operation.
1214 s_ext decides if the operand1 should be sign-extended or zero-extended when
1215 needed. */
1216 static void dec_prep_alu_r(DisasContext *dc, int rs, int rd,
1217 int size, int s_ext, TCGv dst, TCGv src)
1218 {
1219 dec_prep_move_r(dc, rs, rd, size, s_ext, src);
1220
1221 if (s_ext) {
1222 t_gen_sext(dst, cpu_R[rd], size);
1223 } else {
1224 t_gen_zext(dst, cpu_R[rd], size);
1225 }
1226 }
1227
1228 static int dec_prep_move_m(CPUCRISState *env, DisasContext *dc,
1229 int s_ext, int memsize, TCGv dst)
1230 {
1231 unsigned int rs;
1232 uint32_t imm;
1233 int is_imm;
1234 int insn_len = 2;
1235
1236 rs = dc->op1;
1237 is_imm = rs == 15 && dc->postinc;
1238
1239 /* Load [$rs] onto T1. */
1240 if (is_imm) {
1241 insn_len = 2 + memsize;
1242 if (memsize == 1) {
1243 insn_len++;
1244 }
1245
1246 imm = cris_fetch(env, dc, dc->pc + 2, memsize, s_ext);
1247 tcg_gen_movi_tl(dst, imm);
1248 dc->postinc = 0;
1249 } else {
1250 cris_flush_cc_state(dc);
1251 gen_load(dc, dst, cpu_R[rs], memsize, 0);
1252 if (s_ext) {
1253 t_gen_sext(dst, dst, memsize);
1254 } else {
1255 t_gen_zext(dst, dst, memsize);
1256 }
1257 }
1258 return insn_len;
1259 }
1260
1261 /* Prepare T0 and T1 for a memory + alu operation.
1262 s_ext decides if the operand1 should be sign-extended or zero-extended when
1263 needed. */
1264 static int dec_prep_alu_m(CPUCRISState *env, DisasContext *dc,
1265 int s_ext, int memsize, TCGv dst, TCGv src)
1266 {
1267 int insn_len;
1268
1269 insn_len = dec_prep_move_m(env, dc, s_ext, memsize, src);
1270 tcg_gen_mov_tl(dst, cpu_R[dc->op2]);
1271 return insn_len;
1272 }
1273
1274 #if DISAS_CRIS
1275 static const char *cc_name(int cc)
1276 {
1277 static const char *cc_names[16] = {
1278 "cc", "cs", "ne", "eq", "vc", "vs", "pl", "mi",
1279 "ls", "hi", "ge", "lt", "gt", "le", "a", "p"
1280 };
1281 assert(cc < 16);
1282 return cc_names[cc];
1283 }
1284 #endif
1285
1286 /* Start of insn decoders. */
1287
1288 static int dec_bccq(CPUCRISState *env, DisasContext *dc)
1289 {
1290 int32_t offset;
1291 int sign;
1292 uint32_t cond = dc->op2;
1293
1294 offset = EXTRACT_FIELD(dc->ir, 1, 7);
1295 sign = EXTRACT_FIELD(dc->ir, 0, 0);
1296
1297 offset *= 2;
1298 offset |= sign << 8;
1299 offset = sign_extend(offset, 8);
1300
1301 LOG_DIS("b%s %x\n", cc_name(cond), dc->pc + offset);
1302
1303 /* op2 holds the condition-code. */
1304 cris_cc_mask(dc, 0);
1305 cris_prepare_cc_branch(dc, offset, cond);
1306 return 2;
1307 }
1308 static int dec_addoq(CPUCRISState *env, DisasContext *dc)
1309 {
1310 int32_t imm;
1311
1312 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 7);
1313 imm = sign_extend(dc->op1, 7);
1314
1315 LOG_DIS("addoq %d, $r%u\n", imm, dc->op2);
1316 cris_cc_mask(dc, 0);
1317 /* Fetch register operand, */
1318 tcg_gen_addi_tl(cpu_R[R_ACR], cpu_R[dc->op2], imm);
1319
1320 return 2;
1321 }
1322 static int dec_addq(CPUCRISState *env, DisasContext *dc)
1323 {
1324 LOG_DIS("addq %u, $r%u\n", dc->op1, dc->op2);
1325
1326 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1327
1328 cris_cc_mask(dc, CC_MASK_NZVC);
1329
1330 cris_alu(dc, CC_OP_ADD,
1331 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
1332 return 2;
1333 }
1334 static int dec_moveq(CPUCRISState *env, DisasContext *dc)
1335 {
1336 uint32_t imm;
1337
1338 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1339 imm = sign_extend(dc->op1, 5);
1340 LOG_DIS("moveq %d, $r%u\n", imm, dc->op2);
1341
1342 tcg_gen_movi_tl(cpu_R[dc->op2], imm);
1343 return 2;
1344 }
1345 static int dec_subq(CPUCRISState *env, DisasContext *dc)
1346 {
1347 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1348
1349 LOG_DIS("subq %u, $r%u\n", dc->op1, dc->op2);
1350
1351 cris_cc_mask(dc, CC_MASK_NZVC);
1352 cris_alu(dc, CC_OP_SUB,
1353 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
1354 return 2;
1355 }
1356 static int dec_cmpq(CPUCRISState *env, DisasContext *dc)
1357 {
1358 uint32_t imm;
1359 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1360 imm = sign_extend(dc->op1, 5);
1361
1362 LOG_DIS("cmpq %d, $r%d\n", imm, dc->op2);
1363 cris_cc_mask(dc, CC_MASK_NZVC);
1364
1365 cris_alu(dc, CC_OP_CMP,
1366 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
1367 return 2;
1368 }
1369 static int dec_andq(CPUCRISState *env, DisasContext *dc)
1370 {
1371 uint32_t imm;
1372 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1373 imm = sign_extend(dc->op1, 5);
1374
1375 LOG_DIS("andq %d, $r%d\n", imm, dc->op2);
1376 cris_cc_mask(dc, CC_MASK_NZ);
1377
1378 cris_alu(dc, CC_OP_AND,
1379 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
1380 return 2;
1381 }
1382 static int dec_orq(CPUCRISState *env, DisasContext *dc)
1383 {
1384 uint32_t imm;
1385 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1386 imm = sign_extend(dc->op1, 5);
1387 LOG_DIS("orq %d, $r%d\n", imm, dc->op2);
1388 cris_cc_mask(dc, CC_MASK_NZ);
1389
1390 cris_alu(dc, CC_OP_OR,
1391 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
1392 return 2;
1393 }
1394 static int dec_btstq(CPUCRISState *env, DisasContext *dc)
1395 {
1396 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1397 LOG_DIS("btstq %u, $r%d\n", dc->op1, dc->op2);
1398
1399 cris_cc_mask(dc, CC_MASK_NZ);
1400 cris_evaluate_flags(dc);
1401 gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->op2],
1402 tcg_const_tl(dc->op1), cpu_PR[PR_CCS]);
1403 cris_alu(dc, CC_OP_MOVE,
1404 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op2], 4);
1405 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
1406 dc->flags_uptodate = 1;
1407 return 2;
1408 }
1409 static int dec_asrq(CPUCRISState *env, DisasContext *dc)
1410 {
1411 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1412 LOG_DIS("asrq %u, $r%d\n", dc->op1, dc->op2);
1413 cris_cc_mask(dc, CC_MASK_NZ);
1414
1415 tcg_gen_sari_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1);
1416 cris_alu(dc, CC_OP_MOVE,
1417 cpu_R[dc->op2],
1418 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1419 return 2;
1420 }
1421 static int dec_lslq(CPUCRISState *env, DisasContext *dc)
1422 {
1423 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1424 LOG_DIS("lslq %u, $r%d\n", dc->op1, dc->op2);
1425
1426 cris_cc_mask(dc, CC_MASK_NZ);
1427
1428 tcg_gen_shli_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1);
1429
1430 cris_alu(dc, CC_OP_MOVE,
1431 cpu_R[dc->op2],
1432 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1433 return 2;
1434 }
1435 static int dec_lsrq(CPUCRISState *env, DisasContext *dc)
1436 {
1437 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1438 LOG_DIS("lsrq %u, $r%d\n", dc->op1, dc->op2);
1439
1440 cris_cc_mask(dc, CC_MASK_NZ);
1441
1442 tcg_gen_shri_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1);
1443 cris_alu(dc, CC_OP_MOVE,
1444 cpu_R[dc->op2],
1445 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1446 return 2;
1447 }
1448
1449 static int dec_move_r(CPUCRISState *env, DisasContext *dc)
1450 {
1451 int size = memsize_zz(dc);
1452
1453 LOG_DIS("move.%c $r%u, $r%u\n",
1454 memsize_char(size), dc->op1, dc->op2);
1455
1456 cris_cc_mask(dc, CC_MASK_NZ);
1457 if (size == 4) {
1458 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, cpu_R[dc->op2]);
1459 cris_cc_mask(dc, CC_MASK_NZ);
1460 cris_update_cc_op(dc, CC_OP_MOVE, 4);
1461 cris_update_cc_x(dc);
1462 cris_update_result(dc, cpu_R[dc->op2]);
1463 } else {
1464 TCGv t0;
1465
1466 t0 = tcg_temp_new();
1467 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0);
1468 cris_alu(dc, CC_OP_MOVE,
1469 cpu_R[dc->op2],
1470 cpu_R[dc->op2], t0, size);
1471 tcg_temp_free(t0);
1472 }
1473 return 2;
1474 }
1475
1476 static int dec_scc_r(CPUCRISState *env, DisasContext *dc)
1477 {
1478 int cond = dc->op2;
1479
1480 LOG_DIS("s%s $r%u\n",
1481 cc_name(cond), dc->op1);
1482
1483 gen_tst_cc(dc, cpu_R[dc->op1], cond);
1484 tcg_gen_setcondi_tl(TCG_COND_NE, cpu_R[dc->op1], cpu_R[dc->op1], 0);
1485
1486 cris_cc_mask(dc, 0);
1487 return 2;
1488 }
1489
1490 static inline void cris_alu_alloc_temps(DisasContext *dc, int size, TCGv *t)
1491 {
1492 if (size == 4) {
1493 t[0] = cpu_R[dc->op2];
1494 t[1] = cpu_R[dc->op1];
1495 } else {
1496 t[0] = tcg_temp_new();
1497 t[1] = tcg_temp_new();
1498 }
1499 }
1500
1501 static inline void cris_alu_free_temps(DisasContext *dc, int size, TCGv *t)
1502 {
1503 if (size != 4) {
1504 tcg_temp_free(t[0]);
1505 tcg_temp_free(t[1]);
1506 }
1507 }
1508
1509 static int dec_and_r(CPUCRISState *env, DisasContext *dc)
1510 {
1511 TCGv t[2];
1512 int size = memsize_zz(dc);
1513
1514 LOG_DIS("and.%c $r%u, $r%u\n",
1515 memsize_char(size), dc->op1, dc->op2);
1516
1517 cris_cc_mask(dc, CC_MASK_NZ);
1518
1519 cris_alu_alloc_temps(dc, size, t);
1520 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1521 cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], size);
1522 cris_alu_free_temps(dc, size, t);
1523 return 2;
1524 }
1525
1526 static int dec_lz_r(CPUCRISState *env, DisasContext *dc)
1527 {
1528 TCGv t0;
1529 LOG_DIS("lz $r%u, $r%u\n",
1530 dc->op1, dc->op2);
1531 cris_cc_mask(dc, CC_MASK_NZ);
1532 t0 = tcg_temp_new();
1533 dec_prep_alu_r(dc, dc->op1, dc->op2, 4, 0, cpu_R[dc->op2], t0);
1534 cris_alu(dc, CC_OP_LZ, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1535 tcg_temp_free(t0);
1536 return 2;
1537 }
1538
1539 static int dec_lsl_r(CPUCRISState *env, DisasContext *dc)
1540 {
1541 TCGv t[2];
1542 int size = memsize_zz(dc);
1543
1544 LOG_DIS("lsl.%c $r%u, $r%u\n",
1545 memsize_char(size), dc->op1, dc->op2);
1546
1547 cris_cc_mask(dc, CC_MASK_NZ);
1548 cris_alu_alloc_temps(dc, size, t);
1549 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1550 tcg_gen_andi_tl(t[1], t[1], 63);
1551 cris_alu(dc, CC_OP_LSL, cpu_R[dc->op2], t[0], t[1], size);
1552 cris_alu_alloc_temps(dc, size, t);
1553 return 2;
1554 }
1555
1556 static int dec_lsr_r(CPUCRISState *env, DisasContext *dc)
1557 {
1558 TCGv t[2];
1559 int size = memsize_zz(dc);
1560
1561 LOG_DIS("lsr.%c $r%u, $r%u\n",
1562 memsize_char(size), dc->op1, dc->op2);
1563
1564 cris_cc_mask(dc, CC_MASK_NZ);
1565 cris_alu_alloc_temps(dc, size, t);
1566 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1567 tcg_gen_andi_tl(t[1], t[1], 63);
1568 cris_alu(dc, CC_OP_LSR, 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_asr_r(CPUCRISState *env, DisasContext *dc)
1574 {
1575 TCGv t[2];
1576 int size = memsize_zz(dc);
1577
1578 LOG_DIS("asr.%c $r%u, $r%u\n",
1579 memsize_char(size), dc->op1, dc->op2);
1580
1581 cris_cc_mask(dc, CC_MASK_NZ);
1582 cris_alu_alloc_temps(dc, size, t);
1583 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]);
1584 tcg_gen_andi_tl(t[1], t[1], 63);
1585 cris_alu(dc, CC_OP_ASR, cpu_R[dc->op2], t[0], t[1], size);
1586 cris_alu_free_temps(dc, size, t);
1587 return 2;
1588 }
1589
1590 static int dec_muls_r(CPUCRISState *env, DisasContext *dc)
1591 {
1592 TCGv t[2];
1593 int size = memsize_zz(dc);
1594
1595 LOG_DIS("muls.%c $r%u, $r%u\n",
1596 memsize_char(size), dc->op1, dc->op2);
1597 cris_cc_mask(dc, CC_MASK_NZV);
1598 cris_alu_alloc_temps(dc, size, t);
1599 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]);
1600
1601 cris_alu(dc, CC_OP_MULS, cpu_R[dc->op2], t[0], t[1], 4);
1602 cris_alu_free_temps(dc, size, t);
1603 return 2;
1604 }
1605
1606 static int dec_mulu_r(CPUCRISState *env, DisasContext *dc)
1607 {
1608 TCGv t[2];
1609 int size = memsize_zz(dc);
1610
1611 LOG_DIS("mulu.%c $r%u, $r%u\n",
1612 memsize_char(size), dc->op1, dc->op2);
1613 cris_cc_mask(dc, CC_MASK_NZV);
1614 cris_alu_alloc_temps(dc, size, t);
1615 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1616
1617 cris_alu(dc, CC_OP_MULU, cpu_R[dc->op2], t[0], t[1], 4);
1618 cris_alu_alloc_temps(dc, size, t);
1619 return 2;
1620 }
1621
1622
1623 static int dec_dstep_r(CPUCRISState *env, DisasContext *dc)
1624 {
1625 LOG_DIS("dstep $r%u, $r%u\n", dc->op1, dc->op2);
1626 cris_cc_mask(dc, CC_MASK_NZ);
1627 cris_alu(dc, CC_OP_DSTEP,
1628 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4);
1629 return 2;
1630 }
1631
1632 static int dec_xor_r(CPUCRISState *env, DisasContext *dc)
1633 {
1634 TCGv t[2];
1635 int size = memsize_zz(dc);
1636 LOG_DIS("xor.%c $r%u, $r%u\n",
1637 memsize_char(size), dc->op1, dc->op2);
1638 BUG_ON(size != 4); /* xor is dword. */
1639 cris_cc_mask(dc, CC_MASK_NZ);
1640 cris_alu_alloc_temps(dc, size, t);
1641 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1642
1643 cris_alu(dc, CC_OP_XOR, cpu_R[dc->op2], t[0], t[1], 4);
1644 cris_alu_free_temps(dc, size, t);
1645 return 2;
1646 }
1647
1648 static int dec_bound_r(CPUCRISState *env, DisasContext *dc)
1649 {
1650 TCGv l0;
1651 int size = memsize_zz(dc);
1652 LOG_DIS("bound.%c $r%u, $r%u\n",
1653 memsize_char(size), dc->op1, dc->op2);
1654 cris_cc_mask(dc, CC_MASK_NZ);
1655 l0 = tcg_temp_local_new();
1656 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, l0);
1657 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], cpu_R[dc->op2], l0, 4);
1658 tcg_temp_free(l0);
1659 return 2;
1660 }
1661
1662 static int dec_cmp_r(CPUCRISState *env, DisasContext *dc)
1663 {
1664 TCGv t[2];
1665 int size = memsize_zz(dc);
1666 LOG_DIS("cmp.%c $r%u, $r%u\n",
1667 memsize_char(size), dc->op1, dc->op2);
1668 cris_cc_mask(dc, CC_MASK_NZVC);
1669 cris_alu_alloc_temps(dc, size, t);
1670 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1671
1672 cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], t[0], t[1], size);
1673 cris_alu_free_temps(dc, size, t);
1674 return 2;
1675 }
1676
1677 static int dec_abs_r(CPUCRISState *env, DisasContext *dc)
1678 {
1679 TCGv t0;
1680
1681 LOG_DIS("abs $r%u, $r%u\n",
1682 dc->op1, dc->op2);
1683 cris_cc_mask(dc, CC_MASK_NZ);
1684
1685 t0 = tcg_temp_new();
1686 tcg_gen_sari_tl(t0, cpu_R[dc->op1], 31);
1687 tcg_gen_xor_tl(cpu_R[dc->op2], cpu_R[dc->op1], t0);
1688 tcg_gen_sub_tl(cpu_R[dc->op2], cpu_R[dc->op2], t0);
1689 tcg_temp_free(t0);
1690
1691 cris_alu(dc, CC_OP_MOVE,
1692 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op2], 4);
1693 return 2;
1694 }
1695
1696 static int dec_add_r(CPUCRISState *env, DisasContext *dc)
1697 {
1698 TCGv t[2];
1699 int size = memsize_zz(dc);
1700 LOG_DIS("add.%c $r%u, $r%u\n",
1701 memsize_char(size), dc->op1, dc->op2);
1702 cris_cc_mask(dc, CC_MASK_NZVC);
1703 cris_alu_alloc_temps(dc, size, t);
1704 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1705
1706 cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], t[0], t[1], size);
1707 cris_alu_free_temps(dc, size, t);
1708 return 2;
1709 }
1710
1711 static int dec_addc_r(CPUCRISState *env, DisasContext *dc)
1712 {
1713 LOG_DIS("addc $r%u, $r%u\n",
1714 dc->op1, dc->op2);
1715 cris_evaluate_flags(dc);
1716 /* Set for this insn. */
1717 dc->flagx_known = 1;
1718 dc->flags_x = X_FLAG;
1719
1720 cris_cc_mask(dc, CC_MASK_NZVC);
1721 cris_alu(dc, CC_OP_ADDC,
1722 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4);
1723 return 2;
1724 }
1725
1726 static int dec_mcp_r(CPUCRISState *env, DisasContext *dc)
1727 {
1728 LOG_DIS("mcp $p%u, $r%u\n",
1729 dc->op2, dc->op1);
1730 cris_evaluate_flags(dc);
1731 cris_cc_mask(dc, CC_MASK_RNZV);
1732 cris_alu(dc, CC_OP_MCP,
1733 cpu_R[dc->op1], cpu_R[dc->op1], cpu_PR[dc->op2], 4);
1734 return 2;
1735 }
1736
1737 #if DISAS_CRIS
1738 static char * swapmode_name(int mode, char *modename) {
1739 int i = 0;
1740 if (mode & 8) {
1741 modename[i++] = 'n';
1742 }
1743 if (mode & 4) {
1744 modename[i++] = 'w';
1745 }
1746 if (mode & 2) {
1747 modename[i++] = 'b';
1748 }
1749 if (mode & 1) {
1750 modename[i++] = 'r';
1751 }
1752 modename[i++] = 0;
1753 return modename;
1754 }
1755 #endif
1756
1757 static int dec_swap_r(CPUCRISState *env, DisasContext *dc)
1758 {
1759 TCGv t0;
1760 #if DISAS_CRIS
1761 char modename[4];
1762 #endif
1763 LOG_DIS("swap%s $r%u\n",
1764 swapmode_name(dc->op2, modename), dc->op1);
1765
1766 cris_cc_mask(dc, CC_MASK_NZ);
1767 t0 = tcg_temp_new();
1768 tcg_gen_mov_tl(t0, cpu_R[dc->op1]);
1769 if (dc->op2 & 8) {
1770 tcg_gen_not_tl(t0, t0);
1771 }
1772 if (dc->op2 & 4) {
1773 t_gen_swapw(t0, t0);
1774 }
1775 if (dc->op2 & 2) {
1776 t_gen_swapb(t0, t0);
1777 }
1778 if (dc->op2 & 1) {
1779 t_gen_swapr(t0, t0);
1780 }
1781 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op1], cpu_R[dc->op1], t0, 4);
1782 tcg_temp_free(t0);
1783 return 2;
1784 }
1785
1786 static int dec_or_r(CPUCRISState *env, DisasContext *dc)
1787 {
1788 TCGv t[2];
1789 int size = memsize_zz(dc);
1790 LOG_DIS("or.%c $r%u, $r%u\n",
1791 memsize_char(size), dc->op1, dc->op2);
1792 cris_cc_mask(dc, CC_MASK_NZ);
1793 cris_alu_alloc_temps(dc, size, t);
1794 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1795 cris_alu(dc, CC_OP_OR, cpu_R[dc->op2], t[0], t[1], size);
1796 cris_alu_free_temps(dc, size, t);
1797 return 2;
1798 }
1799
1800 static int dec_addi_r(CPUCRISState *env, DisasContext *dc)
1801 {
1802 TCGv t0;
1803 LOG_DIS("addi.%c $r%u, $r%u\n",
1804 memsize_char(memsize_zz(dc)), dc->op2, dc->op1);
1805 cris_cc_mask(dc, 0);
1806 t0 = tcg_temp_new();
1807 tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize));
1808 tcg_gen_add_tl(cpu_R[dc->op1], cpu_R[dc->op1], t0);
1809 tcg_temp_free(t0);
1810 return 2;
1811 }
1812
1813 static int dec_addi_acr(CPUCRISState *env, DisasContext *dc)
1814 {
1815 TCGv t0;
1816 LOG_DIS("addi.%c $r%u, $r%u, $acr\n",
1817 memsize_char(memsize_zz(dc)), dc->op2, dc->op1);
1818 cris_cc_mask(dc, 0);
1819 t0 = tcg_temp_new();
1820 tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize));
1821 tcg_gen_add_tl(cpu_R[R_ACR], cpu_R[dc->op1], t0);
1822 tcg_temp_free(t0);
1823 return 2;
1824 }
1825
1826 static int dec_neg_r(CPUCRISState *env, DisasContext *dc)
1827 {
1828 TCGv t[2];
1829 int size = memsize_zz(dc);
1830 LOG_DIS("neg.%c $r%u, $r%u\n",
1831 memsize_char(size), dc->op1, dc->op2);
1832 cris_cc_mask(dc, CC_MASK_NZVC);
1833 cris_alu_alloc_temps(dc, size, t);
1834 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1835
1836 cris_alu(dc, CC_OP_NEG, cpu_R[dc->op2], t[0], t[1], size);
1837 cris_alu_free_temps(dc, size, t);
1838 return 2;
1839 }
1840
1841 static int dec_btst_r(CPUCRISState *env, DisasContext *dc)
1842 {
1843 LOG_DIS("btst $r%u, $r%u\n",
1844 dc->op1, dc->op2);
1845 cris_cc_mask(dc, CC_MASK_NZ);
1846 cris_evaluate_flags(dc);
1847 gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->op2],
1848 cpu_R[dc->op1], cpu_PR[PR_CCS]);
1849 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2],
1850 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1851 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
1852 dc->flags_uptodate = 1;
1853 return 2;
1854 }
1855
1856 static int dec_sub_r(CPUCRISState *env, DisasContext *dc)
1857 {
1858 TCGv t[2];
1859 int size = memsize_zz(dc);
1860 LOG_DIS("sub.%c $r%u, $r%u\n",
1861 memsize_char(size), dc->op1, dc->op2);
1862 cris_cc_mask(dc, CC_MASK_NZVC);
1863 cris_alu_alloc_temps(dc, size, t);
1864 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1865 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], size);
1866 cris_alu_free_temps(dc, size, t);
1867 return 2;
1868 }
1869
1870 /* Zero extension. From size to dword. */
1871 static int dec_movu_r(CPUCRISState *env, DisasContext *dc)
1872 {
1873 TCGv t0;
1874 int size = memsize_z(dc);
1875 LOG_DIS("movu.%c $r%u, $r%u\n",
1876 memsize_char(size),
1877 dc->op1, dc->op2);
1878
1879 cris_cc_mask(dc, CC_MASK_NZ);
1880 t0 = tcg_temp_new();
1881 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0);
1882 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1883 tcg_temp_free(t0);
1884 return 2;
1885 }
1886
1887 /* Sign extension. From size to dword. */
1888 static int dec_movs_r(CPUCRISState *env, DisasContext *dc)
1889 {
1890 TCGv t0;
1891 int size = memsize_z(dc);
1892 LOG_DIS("movs.%c $r%u, $r%u\n",
1893 memsize_char(size),
1894 dc->op1, dc->op2);
1895
1896 cris_cc_mask(dc, CC_MASK_NZ);
1897 t0 = tcg_temp_new();
1898 /* Size can only be qi or hi. */
1899 t_gen_sext(t0, cpu_R[dc->op1], size);
1900 cris_alu(dc, CC_OP_MOVE,
1901 cpu_R[dc->op2], cpu_R[dc->op1], t0, 4);
1902 tcg_temp_free(t0);
1903 return 2;
1904 }
1905
1906 /* zero extension. From size to dword. */
1907 static int dec_addu_r(CPUCRISState *env, DisasContext *dc)
1908 {
1909 TCGv t0;
1910 int size = memsize_z(dc);
1911 LOG_DIS("addu.%c $r%u, $r%u\n",
1912 memsize_char(size),
1913 dc->op1, dc->op2);
1914
1915 cris_cc_mask(dc, CC_MASK_NZVC);
1916 t0 = tcg_temp_new();
1917 /* Size can only be qi or hi. */
1918 t_gen_zext(t0, cpu_R[dc->op1], size);
1919 cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1920 tcg_temp_free(t0);
1921 return 2;
1922 }
1923
1924 /* Sign extension. From size to dword. */
1925 static int dec_adds_r(CPUCRISState *env, DisasContext *dc)
1926 {
1927 TCGv t0;
1928 int size = memsize_z(dc);
1929 LOG_DIS("adds.%c $r%u, $r%u\n",
1930 memsize_char(size),
1931 dc->op1, dc->op2);
1932
1933 cris_cc_mask(dc, CC_MASK_NZVC);
1934 t0 = tcg_temp_new();
1935 /* Size can only be qi or hi. */
1936 t_gen_sext(t0, cpu_R[dc->op1], size);
1937 cris_alu(dc, CC_OP_ADD,
1938 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1939 tcg_temp_free(t0);
1940 return 2;
1941 }
1942
1943 /* Zero extension. From size to dword. */
1944 static int dec_subu_r(CPUCRISState *env, DisasContext *dc)
1945 {
1946 TCGv t0;
1947 int size = memsize_z(dc);
1948 LOG_DIS("subu.%c $r%u, $r%u\n",
1949 memsize_char(size),
1950 dc->op1, dc->op2);
1951
1952 cris_cc_mask(dc, CC_MASK_NZVC);
1953 t0 = tcg_temp_new();
1954 /* Size can only be qi or hi. */
1955 t_gen_zext(t0, cpu_R[dc->op1], size);
1956 cris_alu(dc, CC_OP_SUB,
1957 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1958 tcg_temp_free(t0);
1959 return 2;
1960 }
1961
1962 /* Sign extension. From size to dword. */
1963 static int dec_subs_r(CPUCRISState *env, DisasContext *dc)
1964 {
1965 TCGv t0;
1966 int size = memsize_z(dc);
1967 LOG_DIS("subs.%c $r%u, $r%u\n",
1968 memsize_char(size),
1969 dc->op1, dc->op2);
1970
1971 cris_cc_mask(dc, CC_MASK_NZVC);
1972 t0 = tcg_temp_new();
1973 /* Size can only be qi or hi. */
1974 t_gen_sext(t0, cpu_R[dc->op1], size);
1975 cris_alu(dc, CC_OP_SUB,
1976 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1977 tcg_temp_free(t0);
1978 return 2;
1979 }
1980
1981 static int dec_setclrf(CPUCRISState *env, DisasContext *dc)
1982 {
1983 uint32_t flags;
1984 int set = (~dc->opcode >> 2) & 1;
1985
1986
1987 flags = (EXTRACT_FIELD(dc->ir, 12, 15) << 4)
1988 | EXTRACT_FIELD(dc->ir, 0, 3);
1989 if (set && flags == 0) {
1990 LOG_DIS("nop\n");
1991 return 2;
1992 } else if (!set && (flags & 0x20)) {
1993 LOG_DIS("di\n");
1994 } else {
1995 LOG_DIS("%sf %x\n", set ? "set" : "clr", flags);
1996 }
1997
1998 /* User space is not allowed to touch these. Silently ignore. */
1999 if (dc->tb_flags & U_FLAG) {
2000 flags &= ~(S_FLAG | I_FLAG | U_FLAG);
2001 }
2002
2003 if (flags & X_FLAG) {
2004 dc->flagx_known = 1;
2005 if (set) {
2006 dc->flags_x = X_FLAG;
2007 } else {
2008 dc->flags_x = 0;
2009 }
2010 }
2011
2012 /* Break the TB if any of the SPI flag changes. */
2013 if (flags & (P_FLAG | S_FLAG)) {
2014 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2015 dc->is_jmp = DISAS_UPDATE;
2016 dc->cpustate_changed = 1;
2017 }
2018
2019 /* For the I flag, only act on posedge. */
2020 if ((flags & I_FLAG)) {
2021 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2022 dc->is_jmp = DISAS_UPDATE;
2023 dc->cpustate_changed = 1;
2024 }
2025
2026
2027 /* Simply decode the flags. */
2028 cris_evaluate_flags(dc);
2029 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
2030 cris_update_cc_x(dc);
2031 tcg_gen_movi_tl(cc_op, dc->cc_op);
2032
2033 if (set) {
2034 if (!(dc->tb_flags & U_FLAG) && (flags & U_FLAG)) {
2035 /* Enter user mode. */
2036 t_gen_mov_env_TN(ksp, cpu_R[R_SP]);
2037 tcg_gen_mov_tl(cpu_R[R_SP], cpu_PR[PR_USP]);
2038 dc->cpustate_changed = 1;
2039 }
2040 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags);
2041 } else {
2042 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~flags);
2043 }
2044
2045 dc->flags_uptodate = 1;
2046 dc->clear_x = 0;
2047 return 2;
2048 }
2049
2050 static int dec_move_rs(CPUCRISState *env, DisasContext *dc)
2051 {
2052 LOG_DIS("move $r%u, $s%u\n", dc->op1, dc->op2);
2053 cris_cc_mask(dc, 0);
2054 gen_helper_movl_sreg_reg(cpu_env, tcg_const_tl(dc->op2),
2055 tcg_const_tl(dc->op1));
2056 return 2;
2057 }
2058 static int dec_move_sr(CPUCRISState *env, DisasContext *dc)
2059 {
2060 LOG_DIS("move $s%u, $r%u\n", dc->op2, dc->op1);
2061 cris_cc_mask(dc, 0);
2062 gen_helper_movl_reg_sreg(cpu_env, tcg_const_tl(dc->op1),
2063 tcg_const_tl(dc->op2));
2064 return 2;
2065 }
2066
2067 static int dec_move_rp(CPUCRISState *env, DisasContext *dc)
2068 {
2069 TCGv t[2];
2070 LOG_DIS("move $r%u, $p%u\n", dc->op1, dc->op2);
2071 cris_cc_mask(dc, 0);
2072
2073 t[0] = tcg_temp_new();
2074 if (dc->op2 == PR_CCS) {
2075 cris_evaluate_flags(dc);
2076 tcg_gen_mov_tl(t[0], cpu_R[dc->op1]);
2077 if (dc->tb_flags & U_FLAG) {
2078 t[1] = tcg_temp_new();
2079 /* User space is not allowed to touch all flags. */
2080 tcg_gen_andi_tl(t[0], t[0], 0x39f);
2081 tcg_gen_andi_tl(t[1], cpu_PR[PR_CCS], ~0x39f);
2082 tcg_gen_or_tl(t[0], t[1], t[0]);
2083 tcg_temp_free(t[1]);
2084 }
2085 } else {
2086 tcg_gen_mov_tl(t[0], cpu_R[dc->op1]);
2087 }
2088
2089 t_gen_mov_preg_TN(dc, dc->op2, t[0]);
2090 if (dc->op2 == PR_CCS) {
2091 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
2092 dc->flags_uptodate = 1;
2093 }
2094 tcg_temp_free(t[0]);
2095 return 2;
2096 }
2097 static int dec_move_pr(CPUCRISState *env, DisasContext *dc)
2098 {
2099 TCGv t0;
2100 LOG_DIS("move $p%u, $r%u\n", dc->op2, dc->op1);
2101 cris_cc_mask(dc, 0);
2102
2103 if (dc->op2 == PR_CCS) {
2104 cris_evaluate_flags(dc);
2105 }
2106
2107 if (dc->op2 == PR_DZ) {
2108 tcg_gen_movi_tl(cpu_R[dc->op1], 0);
2109 } else {
2110 t0 = tcg_temp_new();
2111 t_gen_mov_TN_preg(t0, dc->op2);
2112 cris_alu(dc, CC_OP_MOVE,
2113 cpu_R[dc->op1], cpu_R[dc->op1], t0,
2114 preg_sizes[dc->op2]);
2115 tcg_temp_free(t0);
2116 }
2117 return 2;
2118 }
2119
2120 static int dec_move_mr(CPUCRISState *env, DisasContext *dc)
2121 {
2122 int memsize = memsize_zz(dc);
2123 int insn_len;
2124 LOG_DIS("move.%c [$r%u%s, $r%u\n",
2125 memsize_char(memsize),
2126 dc->op1, dc->postinc ? "+]" : "]",
2127 dc->op2);
2128
2129 if (memsize == 4) {
2130 insn_len = dec_prep_move_m(env, dc, 0, 4, cpu_R[dc->op2]);
2131 cris_cc_mask(dc, CC_MASK_NZ);
2132 cris_update_cc_op(dc, CC_OP_MOVE, 4);
2133 cris_update_cc_x(dc);
2134 cris_update_result(dc, cpu_R[dc->op2]);
2135 } else {
2136 TCGv t0;
2137
2138 t0 = tcg_temp_new();
2139 insn_len = dec_prep_move_m(env, dc, 0, memsize, t0);
2140 cris_cc_mask(dc, CC_MASK_NZ);
2141 cris_alu(dc, CC_OP_MOVE,
2142 cpu_R[dc->op2], cpu_R[dc->op2], t0, memsize);
2143 tcg_temp_free(t0);
2144 }
2145 do_postinc(dc, memsize);
2146 return insn_len;
2147 }
2148
2149 static inline void cris_alu_m_alloc_temps(TCGv *t)
2150 {
2151 t[0] = tcg_temp_new();
2152 t[1] = tcg_temp_new();
2153 }
2154
2155 static inline void cris_alu_m_free_temps(TCGv *t)
2156 {
2157 tcg_temp_free(t[0]);
2158 tcg_temp_free(t[1]);
2159 }
2160
2161 static int dec_movs_m(CPUCRISState *env, DisasContext *dc)
2162 {
2163 TCGv t[2];
2164 int memsize = memsize_z(dc);
2165 int insn_len;
2166 LOG_DIS("movs.%c [$r%u%s, $r%u\n",
2167 memsize_char(memsize),
2168 dc->op1, dc->postinc ? "+]" : "]",
2169 dc->op2);
2170
2171 cris_alu_m_alloc_temps(t);
2172 /* sign extend. */
2173 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2174 cris_cc_mask(dc, CC_MASK_NZ);
2175 cris_alu(dc, CC_OP_MOVE,
2176 cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2177 do_postinc(dc, memsize);
2178 cris_alu_m_free_temps(t);
2179 return insn_len;
2180 }
2181
2182 static int dec_addu_m(CPUCRISState *env, DisasContext *dc)
2183 {
2184 TCGv t[2];
2185 int memsize = memsize_z(dc);
2186 int insn_len;
2187 LOG_DIS("addu.%c [$r%u%s, $r%u\n",
2188 memsize_char(memsize),
2189 dc->op1, dc->postinc ? "+]" : "]",
2190 dc->op2);
2191
2192 cris_alu_m_alloc_temps(t);
2193 /* sign extend. */
2194 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2195 cris_cc_mask(dc, CC_MASK_NZVC);
2196 cris_alu(dc, CC_OP_ADD,
2197 cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2198 do_postinc(dc, memsize);
2199 cris_alu_m_free_temps(t);
2200 return insn_len;
2201 }
2202
2203 static int dec_adds_m(CPUCRISState *env, DisasContext *dc)
2204 {
2205 TCGv t[2];
2206 int memsize = memsize_z(dc);
2207 int insn_len;
2208 LOG_DIS("adds.%c [$r%u%s, $r%u\n",
2209 memsize_char(memsize),
2210 dc->op1, dc->postinc ? "+]" : "]",
2211 dc->op2);
2212
2213 cris_alu_m_alloc_temps(t);
2214 /* sign extend. */
2215 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2216 cris_cc_mask(dc, CC_MASK_NZVC);
2217 cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2218 do_postinc(dc, memsize);
2219 cris_alu_m_free_temps(t);
2220 return insn_len;
2221 }
2222
2223 static int dec_subu_m(CPUCRISState *env, DisasContext *dc)
2224 {
2225 TCGv t[2];
2226 int memsize = memsize_z(dc);
2227 int insn_len;
2228 LOG_DIS("subu.%c [$r%u%s, $r%u\n",
2229 memsize_char(memsize),
2230 dc->op1, dc->postinc ? "+]" : "]",
2231 dc->op2);
2232
2233 cris_alu_m_alloc_temps(t);
2234 /* sign extend. */
2235 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2236 cris_cc_mask(dc, CC_MASK_NZVC);
2237 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2238 do_postinc(dc, memsize);
2239 cris_alu_m_free_temps(t);
2240 return insn_len;
2241 }
2242
2243 static int dec_subs_m(CPUCRISState *env, DisasContext *dc)
2244 {
2245 TCGv t[2];
2246 int memsize = memsize_z(dc);
2247 int insn_len;
2248 LOG_DIS("subs.%c [$r%u%s, $r%u\n",
2249 memsize_char(memsize),
2250 dc->op1, dc->postinc ? "+]" : "]",
2251 dc->op2);
2252
2253 cris_alu_m_alloc_temps(t);
2254 /* sign extend. */
2255 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2256 cris_cc_mask(dc, CC_MASK_NZVC);
2257 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2258 do_postinc(dc, memsize);
2259 cris_alu_m_free_temps(t);
2260 return insn_len;
2261 }
2262
2263 static int dec_movu_m(CPUCRISState *env, DisasContext *dc)
2264 {
2265 TCGv t[2];
2266 int memsize = memsize_z(dc);
2267 int insn_len;
2268
2269 LOG_DIS("movu.%c [$r%u%s, $r%u\n",
2270 memsize_char(memsize),
2271 dc->op1, dc->postinc ? "+]" : "]",
2272 dc->op2);
2273
2274 cris_alu_m_alloc_temps(t);
2275 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2276 cris_cc_mask(dc, CC_MASK_NZ);
2277 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2278 do_postinc(dc, memsize);
2279 cris_alu_m_free_temps(t);
2280 return insn_len;
2281 }
2282
2283 static int dec_cmpu_m(CPUCRISState *env, DisasContext *dc)
2284 {
2285 TCGv t[2];
2286 int memsize = memsize_z(dc);
2287 int insn_len;
2288 LOG_DIS("cmpu.%c [$r%u%s, $r%u\n",
2289 memsize_char(memsize),
2290 dc->op1, dc->postinc ? "+]" : "]",
2291 dc->op2);
2292
2293 cris_alu_m_alloc_temps(t);
2294 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2295 cris_cc_mask(dc, CC_MASK_NZVC);
2296 cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2297 do_postinc(dc, memsize);
2298 cris_alu_m_free_temps(t);
2299 return insn_len;
2300 }
2301
2302 static int dec_cmps_m(CPUCRISState *env, DisasContext *dc)
2303 {
2304 TCGv t[2];
2305 int memsize = memsize_z(dc);
2306 int insn_len;
2307 LOG_DIS("cmps.%c [$r%u%s, $r%u\n",
2308 memsize_char(memsize),
2309 dc->op1, dc->postinc ? "+]" : "]",
2310 dc->op2);
2311
2312 cris_alu_m_alloc_temps(t);
2313 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2314 cris_cc_mask(dc, CC_MASK_NZVC);
2315 cris_alu(dc, CC_OP_CMP,
2316 cpu_R[dc->op2], cpu_R[dc->op2], t[1],
2317 memsize_zz(dc));
2318 do_postinc(dc, memsize);
2319 cris_alu_m_free_temps(t);
2320 return insn_len;
2321 }
2322
2323 static int dec_cmp_m(CPUCRISState *env, DisasContext *dc)
2324 {
2325 TCGv t[2];
2326 int memsize = memsize_zz(dc);
2327 int insn_len;
2328 LOG_DIS("cmp.%c [$r%u%s, $r%u\n",
2329 memsize_char(memsize),
2330 dc->op1, dc->postinc ? "+]" : "]",
2331 dc->op2);
2332
2333 cris_alu_m_alloc_temps(t);
2334 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2335 cris_cc_mask(dc, CC_MASK_NZVC);
2336 cris_alu(dc, CC_OP_CMP,
2337 cpu_R[dc->op2], cpu_R[dc->op2], t[1],
2338 memsize_zz(dc));
2339 do_postinc(dc, memsize);
2340 cris_alu_m_free_temps(t);
2341 return insn_len;
2342 }
2343
2344 static int dec_test_m(CPUCRISState *env, DisasContext *dc)
2345 {
2346 TCGv t[2];
2347 int memsize = memsize_zz(dc);
2348 int insn_len;
2349 LOG_DIS("test.%c [$r%u%s] op2=%x\n",
2350 memsize_char(memsize),
2351 dc->op1, dc->postinc ? "+]" : "]",
2352 dc->op2);
2353
2354 cris_evaluate_flags(dc);
2355
2356 cris_alu_m_alloc_temps(t);
2357 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2358 cris_cc_mask(dc, CC_MASK_NZ);
2359 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3);
2360
2361 cris_alu(dc, CC_OP_CMP,
2362 cpu_R[dc->op2], t[1], tcg_const_tl(0), memsize_zz(dc));
2363 do_postinc(dc, memsize);
2364 cris_alu_m_free_temps(t);
2365 return insn_len;
2366 }
2367
2368 static int dec_and_m(CPUCRISState *env, DisasContext *dc)
2369 {
2370 TCGv t[2];
2371 int memsize = memsize_zz(dc);
2372 int insn_len;
2373 LOG_DIS("and.%c [$r%u%s, $r%u\n",
2374 memsize_char(memsize),
2375 dc->op1, dc->postinc ? "+]" : "]",
2376 dc->op2);
2377
2378 cris_alu_m_alloc_temps(t);
2379 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2380 cris_cc_mask(dc, CC_MASK_NZ);
2381 cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
2382 do_postinc(dc, memsize);
2383 cris_alu_m_free_temps(t);
2384 return insn_len;
2385 }
2386
2387 static int dec_add_m(CPUCRISState *env, DisasContext *dc)
2388 {
2389 TCGv t[2];
2390 int memsize = memsize_zz(dc);
2391 int insn_len;
2392 LOG_DIS("add.%c [$r%u%s, $r%u\n",
2393 memsize_char(memsize),
2394 dc->op1, dc->postinc ? "+]" : "]",
2395 dc->op2);
2396
2397 cris_alu_m_alloc_temps(t);
2398 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2399 cris_cc_mask(dc, CC_MASK_NZVC);
2400 cris_alu(dc, CC_OP_ADD,
2401 cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
2402 do_postinc(dc, memsize);
2403 cris_alu_m_free_temps(t);
2404 return insn_len;
2405 }
2406
2407 static int dec_addo_m(CPUCRISState *env, DisasContext *dc)
2408 {
2409 TCGv t[2];
2410 int memsize = memsize_zz(dc);
2411 int insn_len;
2412 LOG_DIS("add.%c [$r%u%s, $r%u\n",
2413 memsize_char(memsize),
2414 dc->op1, dc->postinc ? "+]" : "]",
2415 dc->op2);
2416
2417 cris_alu_m_alloc_temps(t);
2418 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2419 cris_cc_mask(dc, 0);
2420 cris_alu(dc, CC_OP_ADD, cpu_R[R_ACR], t[0], t[1], 4);
2421 do_postinc(dc, memsize);
2422 cris_alu_m_free_temps(t);
2423 return insn_len;
2424 }
2425
2426 static int dec_bound_m(CPUCRISState *env, DisasContext *dc)
2427 {
2428 TCGv l[2];
2429 int memsize = memsize_zz(dc);
2430 int insn_len;
2431 LOG_DIS("bound.%c [$r%u%s, $r%u\n",
2432 memsize_char(memsize),
2433 dc->op1, dc->postinc ? "+]" : "]",
2434 dc->op2);
2435
2436 l[0] = tcg_temp_local_new();
2437 l[1] = tcg_temp_local_new();
2438 insn_len = dec_prep_alu_m(env, dc, 0, memsize, l[0], l[1]);
2439 cris_cc_mask(dc, CC_MASK_NZ);
2440 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], l[0], l[1], 4);
2441 do_postinc(dc, memsize);
2442 tcg_temp_free(l[0]);
2443 tcg_temp_free(l[1]);
2444 return insn_len;
2445 }
2446
2447 static int dec_addc_mr(CPUCRISState *env, DisasContext *dc)
2448 {
2449 TCGv t[2];
2450 int insn_len = 2;
2451 LOG_DIS("addc [$r%u%s, $r%u\n",
2452 dc->op1, dc->postinc ? "+]" : "]",
2453 dc->op2);
2454
2455 cris_evaluate_flags(dc);
2456
2457 /* Set for this insn. */
2458 dc->flagx_known = 1;
2459 dc->flags_x = X_FLAG;
2460
2461 cris_alu_m_alloc_temps(t);
2462 insn_len = dec_prep_alu_m(env, dc, 0, 4, t[0], t[1]);
2463 cris_cc_mask(dc, CC_MASK_NZVC);
2464 cris_alu(dc, CC_OP_ADDC, cpu_R[dc->op2], t[0], t[1], 4);
2465 do_postinc(dc, 4);
2466 cris_alu_m_free_temps(t);
2467 return insn_len;
2468 }
2469
2470 static int dec_sub_m(CPUCRISState *env, DisasContext *dc)
2471 {
2472 TCGv t[2];
2473 int memsize = memsize_zz(dc);
2474 int insn_len;
2475 LOG_DIS("sub.%c [$r%u%s, $r%u ir=%x zz=%x\n",
2476 memsize_char(memsize),
2477 dc->op1, dc->postinc ? "+]" : "]",
2478 dc->op2, dc->ir, dc->zzsize);
2479
2480 cris_alu_m_alloc_temps(t);
2481 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2482 cris_cc_mask(dc, CC_MASK_NZVC);
2483 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], memsize);
2484 do_postinc(dc, memsize);
2485 cris_alu_m_free_temps(t);
2486 return insn_len;
2487 }
2488
2489 static int dec_or_m(CPUCRISState *env, DisasContext *dc)
2490 {
2491 TCGv t[2];
2492 int memsize = memsize_zz(dc);
2493 int insn_len;
2494 LOG_DIS("or.%c [$r%u%s, $r%u pc=%x\n",
2495 memsize_char(memsize),
2496 dc->op1, dc->postinc ? "+]" : "]",
2497 dc->op2, dc->pc);
2498
2499 cris_alu_m_alloc_temps(t);
2500 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2501 cris_cc_mask(dc, CC_MASK_NZ);
2502 cris_alu(dc, CC_OP_OR,
2503 cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
2504 do_postinc(dc, memsize);
2505 cris_alu_m_free_temps(t);
2506 return insn_len;
2507 }
2508
2509 static int dec_move_mp(CPUCRISState *env, DisasContext *dc)
2510 {
2511 TCGv t[2];
2512 int memsize = memsize_zz(dc);
2513 int insn_len = 2;
2514
2515 LOG_DIS("move.%c [$r%u%s, $p%u\n",
2516 memsize_char(memsize),
2517 dc->op1,
2518 dc->postinc ? "+]" : "]",
2519 dc->op2);
2520
2521 cris_alu_m_alloc_temps(t);
2522 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2523 cris_cc_mask(dc, 0);
2524 if (dc->op2 == PR_CCS) {
2525 cris_evaluate_flags(dc);
2526 if (dc->tb_flags & U_FLAG) {
2527 /* User space is not allowed to touch all flags. */
2528 tcg_gen_andi_tl(t[1], t[1], 0x39f);
2529 tcg_gen_andi_tl(t[0], cpu_PR[PR_CCS], ~0x39f);
2530 tcg_gen_or_tl(t[1], t[0], t[1]);
2531 }
2532 }
2533
2534 t_gen_mov_preg_TN(dc, dc->op2, t[1]);
2535
2536 do_postinc(dc, memsize);
2537 cris_alu_m_free_temps(t);
2538 return insn_len;
2539 }
2540
2541 static int dec_move_pm(CPUCRISState *env, DisasContext *dc)
2542 {
2543 TCGv t0;
2544 int memsize;
2545
2546 memsize = preg_sizes[dc->op2];
2547
2548 LOG_DIS("move.%c $p%u, [$r%u%s\n",
2549 memsize_char(memsize),
2550 dc->op2, dc->op1, dc->postinc ? "+]" : "]");
2551
2552 /* prepare store. Address in T0, value in T1. */
2553 if (dc->op2 == PR_CCS) {
2554 cris_evaluate_flags(dc);
2555 }
2556 t0 = tcg_temp_new();
2557 t_gen_mov_TN_preg(t0, dc->op2);
2558 cris_flush_cc_state(dc);
2559 gen_store(dc, cpu_R[dc->op1], t0, memsize);
2560 tcg_temp_free(t0);
2561
2562 cris_cc_mask(dc, 0);
2563 if (dc->postinc) {
2564 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize);
2565 }
2566 return 2;
2567 }
2568
2569 static int dec_movem_mr(CPUCRISState *env, DisasContext *dc)
2570 {
2571 TCGv_i64 tmp[16];
2572 TCGv tmp32;
2573 TCGv addr;
2574 int i;
2575 int nr = dc->op2 + 1;
2576
2577 LOG_DIS("movem [$r%u%s, $r%u\n", dc->op1,
2578 dc->postinc ? "+]" : "]", dc->op2);
2579
2580 addr = tcg_temp_new();
2581 /* There are probably better ways of doing this. */
2582 cris_flush_cc_state(dc);
2583 for (i = 0; i < (nr >> 1); i++) {
2584 tmp[i] = tcg_temp_new_i64();
2585 tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8);
2586 gen_load64(dc, tmp[i], addr);
2587 }
2588 if (nr & 1) {
2589 tmp32 = tcg_temp_new_i32();
2590 tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8);
2591 gen_load(dc, tmp32, addr, 4, 0);
2592 } else {
2593 TCGV_UNUSED(tmp32);
2594 }
2595 tcg_temp_free(addr);
2596
2597 for (i = 0; i < (nr >> 1); i++) {
2598 tcg_gen_extrl_i64_i32(cpu_R[i * 2], tmp[i]);
2599 tcg_gen_shri_i64(tmp[i], tmp[i], 32);
2600 tcg_gen_extrl_i64_i32(cpu_R[i * 2 + 1], tmp[i]);
2601 tcg_temp_free_i64(tmp[i]);
2602 }
2603 if (nr & 1) {
2604 tcg_gen_mov_tl(cpu_R[dc->op2], tmp32);
2605 tcg_temp_free(tmp32);
2606 }
2607
2608 /* writeback the updated pointer value. */
2609 if (dc->postinc) {
2610 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], nr * 4);
2611 }
2612
2613 /* gen_load might want to evaluate the previous insns flags. */
2614 cris_cc_mask(dc, 0);
2615 return 2;
2616 }
2617
2618 static int dec_movem_rm(CPUCRISState *env, DisasContext *dc)
2619 {
2620 TCGv tmp;
2621 TCGv addr;
2622 int i;
2623
2624 LOG_DIS("movem $r%u, [$r%u%s\n", dc->op2, dc->op1,
2625 dc->postinc ? "+]" : "]");
2626
2627 cris_flush_cc_state(dc);
2628
2629 tmp = tcg_temp_new();
2630 addr = tcg_temp_new();
2631 tcg_gen_movi_tl(tmp, 4);
2632 tcg_gen_mov_tl(addr, cpu_R[dc->op1]);
2633 for (i = 0; i <= dc->op2; i++) {
2634 /* Displace addr. */
2635 /* Perform the store. */
2636 gen_store(dc, addr, cpu_R[i], 4);
2637 tcg_gen_add_tl(addr, addr, tmp);
2638 }
2639 if (dc->postinc) {
2640 tcg_gen_mov_tl(cpu_R[dc->op1], addr);
2641 }
2642 cris_cc_mask(dc, 0);
2643 tcg_temp_free(tmp);
2644 tcg_temp_free(addr);
2645 return 2;
2646 }
2647
2648 static int dec_move_rm(CPUCRISState *env, DisasContext *dc)
2649 {
2650 int memsize;
2651
2652 memsize = memsize_zz(dc);
2653
2654 LOG_DIS("move.%c $r%u, [$r%u]\n",
2655 memsize_char(memsize), dc->op2, dc->op1);
2656
2657 /* prepare store. */
2658 cris_flush_cc_state(dc);
2659 gen_store(dc, cpu_R[dc->op1], cpu_R[dc->op2], memsize);
2660
2661 if (dc->postinc) {
2662 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize);
2663 }
2664 cris_cc_mask(dc, 0);
2665 return 2;
2666 }
2667
2668 static int dec_lapcq(CPUCRISState *env, DisasContext *dc)
2669 {
2670 LOG_DIS("lapcq %x, $r%u\n",
2671 dc->pc + dc->op1*2, dc->op2);
2672 cris_cc_mask(dc, 0);
2673 tcg_gen_movi_tl(cpu_R[dc->op2], dc->pc + dc->op1 * 2);
2674 return 2;
2675 }
2676
2677 static int dec_lapc_im(CPUCRISState *env, DisasContext *dc)
2678 {
2679 unsigned int rd;
2680 int32_t imm;
2681 int32_t pc;
2682
2683 rd = dc->op2;
2684
2685 cris_cc_mask(dc, 0);
2686 imm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2687 LOG_DIS("lapc 0x%x, $r%u\n", imm + dc->pc, dc->op2);
2688
2689 pc = dc->pc;
2690 pc += imm;
2691 tcg_gen_movi_tl(cpu_R[rd], pc);
2692 return 6;
2693 }
2694
2695 /* Jump to special reg. */
2696 static int dec_jump_p(CPUCRISState *env, DisasContext *dc)
2697 {
2698 LOG_DIS("jump $p%u\n", dc->op2);
2699
2700 if (dc->op2 == PR_CCS) {
2701 cris_evaluate_flags(dc);
2702 }
2703 t_gen_mov_TN_preg(env_btarget, dc->op2);
2704 /* rete will often have low bit set to indicate delayslot. */
2705 tcg_gen_andi_tl(env_btarget, env_btarget, ~1);
2706 cris_cc_mask(dc, 0);
2707 cris_prepare_jmp(dc, JMP_INDIRECT);
2708 return 2;
2709 }
2710
2711 /* Jump and save. */
2712 static int dec_jas_r(CPUCRISState *env, DisasContext *dc)
2713 {
2714 LOG_DIS("jas $r%u, $p%u\n", dc->op1, dc->op2);
2715 cris_cc_mask(dc, 0);
2716 /* Store the return address in Pd. */
2717 tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]);
2718 if (dc->op2 > 15) {
2719 abort();
2720 }
2721 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4));
2722
2723 cris_prepare_jmp(dc, JMP_INDIRECT);
2724 return 2;
2725 }
2726
2727 static int dec_jas_im(CPUCRISState *env, DisasContext *dc)
2728 {
2729 uint32_t imm;
2730
2731 imm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2732
2733 LOG_DIS("jas 0x%x\n", imm);
2734 cris_cc_mask(dc, 0);
2735 /* Store the return address in Pd. */
2736 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8));
2737
2738 dc->jmp_pc = imm;
2739 cris_prepare_jmp(dc, JMP_DIRECT);
2740 return 6;
2741 }
2742
2743 static int dec_jasc_im(CPUCRISState *env, DisasContext *dc)
2744 {
2745 uint32_t imm;
2746
2747 imm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2748
2749 LOG_DIS("jasc 0x%x\n", imm);
2750 cris_cc_mask(dc, 0);
2751 /* Store the return address in Pd. */
2752 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8 + 4));
2753
2754 dc->jmp_pc = imm;
2755 cris_prepare_jmp(dc, JMP_DIRECT);
2756 return 6;
2757 }
2758
2759 static int dec_jasc_r(CPUCRISState *env, DisasContext *dc)
2760 {
2761 LOG_DIS("jasc_r $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 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4 + 4));
2766 cris_prepare_jmp(dc, JMP_INDIRECT);
2767 return 2;
2768 }
2769
2770 static int dec_bcc_im(CPUCRISState *env, DisasContext *dc)
2771 {
2772 int32_t offset;
2773 uint32_t cond = dc->op2;
2774
2775 offset = cris_fetch(env, dc, dc->pc + 2, 2, 1);
2776
2777 LOG_DIS("b%s %d pc=%x dst=%x\n",
2778 cc_name(cond), offset,
2779 dc->pc, dc->pc + offset);
2780
2781 cris_cc_mask(dc, 0);
2782 /* op2 holds the condition-code. */
2783 cris_prepare_cc_branch(dc, offset, cond);
2784 return 4;
2785 }
2786
2787 static int dec_bas_im(CPUCRISState *env, DisasContext *dc)
2788 {
2789 int32_t simm;
2790
2791 simm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2792
2793 LOG_DIS("bas 0x%x, $p%u\n", dc->pc + simm, dc->op2);
2794 cris_cc_mask(dc, 0);
2795 /* Store the return address in Pd. */
2796 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8));
2797
2798 dc->jmp_pc = dc->pc + simm;
2799 cris_prepare_jmp(dc, JMP_DIRECT);
2800 return 6;
2801 }
2802
2803 static int dec_basc_im(CPUCRISState *env, DisasContext *dc)
2804 {
2805 int32_t simm;
2806 simm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2807
2808 LOG_DIS("basc 0x%x, $p%u\n", dc->pc + simm, dc->op2);
2809 cris_cc_mask(dc, 0);
2810 /* Store the return address in Pd. */
2811 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 12));
2812
2813 dc->jmp_pc = dc->pc + simm;
2814 cris_prepare_jmp(dc, JMP_DIRECT);
2815 return 6;
2816 }
2817
2818 static int dec_rfe_etc(CPUCRISState *env, DisasContext *dc)
2819 {
2820 cris_cc_mask(dc, 0);
2821
2822 if (dc->op2 == 15) {
2823 tcg_gen_st_i32(tcg_const_i32(1), cpu_env,
2824 -offsetof(CRISCPU, env) + offsetof(CPUState, halted));
2825 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2826 t_gen_raise_exception(EXCP_HLT);
2827 return 2;
2828 }
2829
2830 switch (dc->op2 & 7) {
2831 case 2:
2832 /* rfe. */
2833 LOG_DIS("rfe\n");
2834 cris_evaluate_flags(dc);
2835 gen_helper_rfe(cpu_env);
2836 dc->is_jmp = DISAS_UPDATE;
2837 break;
2838 case 5:
2839 /* rfn. */
2840 LOG_DIS("rfn\n");
2841 cris_evaluate_flags(dc);
2842 gen_helper_rfn(cpu_env);
2843 dc->is_jmp = DISAS_UPDATE;
2844 break;
2845 case 6:
2846 LOG_DIS("break %d\n", dc->op1);
2847 cris_evaluate_flags(dc);
2848 /* break. */
2849 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2850
2851 /* Breaks start at 16 in the exception vector. */
2852 t_gen_mov_env_TN(trap_vector,
2853 tcg_const_tl(dc->op1 + 16));
2854 t_gen_raise_exception(EXCP_BREAK);
2855 dc->is_jmp = DISAS_UPDATE;
2856 break;
2857 default:
2858 printf("op2=%x\n", dc->op2);
2859 BUG();
2860 break;
2861
2862 }
2863 return 2;
2864 }
2865
2866 static int dec_ftag_fidx_d_m(CPUCRISState *env, DisasContext *dc)
2867 {
2868 return 2;
2869 }
2870
2871 static int dec_ftag_fidx_i_m(CPUCRISState *env, DisasContext *dc)
2872 {
2873 return 2;
2874 }
2875
2876 static int dec_null(CPUCRISState *env, DisasContext *dc)
2877 {
2878 printf("unknown insn pc=%x opc=%x op1=%x op2=%x\n",
2879 dc->pc, dc->opcode, dc->op1, dc->op2);
2880 fflush(NULL);
2881 BUG();
2882 return 2;
2883 }
2884
2885 static struct decoder_info {
2886 struct {
2887 uint32_t bits;
2888 uint32_t mask;
2889 };
2890 int (*dec)(CPUCRISState *env, DisasContext *dc);
2891 } decinfo[] = {
2892 /* Order matters here. */
2893 {DEC_MOVEQ, dec_moveq},
2894 {DEC_BTSTQ, dec_btstq},
2895 {DEC_CMPQ, dec_cmpq},
2896 {DEC_ADDOQ, dec_addoq},
2897 {DEC_ADDQ, dec_addq},
2898 {DEC_SUBQ, dec_subq},
2899 {DEC_ANDQ, dec_andq},
2900 {DEC_ORQ, dec_orq},
2901 {DEC_ASRQ, dec_asrq},
2902 {DEC_LSLQ, dec_lslq},
2903 {DEC_LSRQ, dec_lsrq},
2904 {DEC_BCCQ, dec_bccq},
2905
2906 {DEC_BCC_IM, dec_bcc_im},
2907 {DEC_JAS_IM, dec_jas_im},
2908 {DEC_JAS_R, dec_jas_r},
2909 {DEC_JASC_IM, dec_jasc_im},
2910 {DEC_JASC_R, dec_jasc_r},
2911 {DEC_BAS_IM, dec_bas_im},
2912 {DEC_BASC_IM, dec_basc_im},
2913 {DEC_JUMP_P, dec_jump_p},
2914 {DEC_LAPC_IM, dec_lapc_im},
2915 {DEC_LAPCQ, dec_lapcq},
2916
2917 {DEC_RFE_ETC, dec_rfe_etc},
2918 {DEC_ADDC_MR, dec_addc_mr},
2919
2920 {DEC_MOVE_MP, dec_move_mp},
2921 {DEC_MOVE_PM, dec_move_pm},
2922 {DEC_MOVEM_MR, dec_movem_mr},
2923 {DEC_MOVEM_RM, dec_movem_rm},
2924 {DEC_MOVE_PR, dec_move_pr},
2925 {DEC_SCC_R, dec_scc_r},
2926 {DEC_SETF, dec_setclrf},
2927 {DEC_CLEARF, dec_setclrf},
2928
2929 {DEC_MOVE_SR, dec_move_sr},
2930 {DEC_MOVE_RP, dec_move_rp},
2931 {DEC_SWAP_R, dec_swap_r},
2932 {DEC_ABS_R, dec_abs_r},
2933 {DEC_LZ_R, dec_lz_r},
2934 {DEC_MOVE_RS, dec_move_rs},
2935 {DEC_BTST_R, dec_btst_r},
2936 {DEC_ADDC_R, dec_addc_r},
2937
2938 {DEC_DSTEP_R, dec_dstep_r},
2939 {DEC_XOR_R, dec_xor_r},
2940 {DEC_MCP_R, dec_mcp_r},
2941 {DEC_CMP_R, dec_cmp_r},
2942
2943 {DEC_ADDI_R, dec_addi_r},
2944 {DEC_ADDI_ACR, dec_addi_acr},
2945
2946 {DEC_ADD_R, dec_add_r},
2947 {DEC_SUB_R, dec_sub_r},
2948
2949 {DEC_ADDU_R, dec_addu_r},
2950 {DEC_ADDS_R, dec_adds_r},
2951 {DEC_SUBU_R, dec_subu_r},
2952 {DEC_SUBS_R, dec_subs_r},
2953 {DEC_LSL_R, dec_lsl_r},
2954
2955 {DEC_AND_R, dec_and_r},
2956 {DEC_OR_R, dec_or_r},
2957 {DEC_BOUND_R, dec_bound_r},
2958 {DEC_ASR_R, dec_asr_r},
2959 {DEC_LSR_R, dec_lsr_r},
2960
2961 {DEC_MOVU_R, dec_movu_r},
2962 {DEC_MOVS_R, dec_movs_r},
2963 {DEC_NEG_R, dec_neg_r},
2964 {DEC_MOVE_R, dec_move_r},
2965
2966 {DEC_FTAG_FIDX_I_M, dec_ftag_fidx_i_m},
2967 {DEC_FTAG_FIDX_D_M, dec_ftag_fidx_d_m},
2968
2969 {DEC_MULS_R, dec_muls_r},
2970 {DEC_MULU_R, dec_mulu_r},
2971
2972 {DEC_ADDU_M, dec_addu_m},
2973 {DEC_ADDS_M, dec_adds_m},
2974 {DEC_SUBU_M, dec_subu_m},
2975 {DEC_SUBS_M, dec_subs_m},
2976
2977 {DEC_CMPU_M, dec_cmpu_m},
2978 {DEC_CMPS_M, dec_cmps_m},
2979 {DEC_MOVU_M, dec_movu_m},
2980 {DEC_MOVS_M, dec_movs_m},
2981
2982 {DEC_CMP_M, dec_cmp_m},
2983 {DEC_ADDO_M, dec_addo_m},
2984 {DEC_BOUND_M, dec_bound_m},
2985 {DEC_ADD_M, dec_add_m},
2986 {DEC_SUB_M, dec_sub_m},
2987 {DEC_AND_M, dec_and_m},
2988 {DEC_OR_M, dec_or_m},
2989 {DEC_MOVE_RM, dec_move_rm},
2990 {DEC_TEST_M, dec_test_m},
2991 {DEC_MOVE_MR, dec_move_mr},
2992
2993 {{0, 0}, dec_null}
2994 };
2995
2996 static unsigned int crisv32_decoder(CPUCRISState *env, DisasContext *dc)
2997 {
2998 int insn_len = 2;
2999 int i;
3000
3001 /* Load a halfword onto the instruction register. */
3002 dc->ir = cris_fetch(env, dc, dc->pc, 2, 0);
3003
3004 /* Now decode it. */
3005 dc->opcode = EXTRACT_FIELD(dc->ir, 4, 11);
3006 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 3);
3007 dc->op2 = EXTRACT_FIELD(dc->ir, 12, 15);
3008 dc->zsize = EXTRACT_FIELD(dc->ir, 4, 4);
3009 dc->zzsize = EXTRACT_FIELD(dc->ir, 4, 5);
3010 dc->postinc = EXTRACT_FIELD(dc->ir, 10, 10);
3011
3012 /* Large switch for all insns. */
3013 for (i = 0; i < ARRAY_SIZE(decinfo); i++) {
3014 if ((dc->opcode & decinfo[i].mask) == decinfo[i].bits) {
3015 insn_len = decinfo[i].dec(env, dc);
3016 break;
3017 }
3018 }
3019
3020 #if !defined(CONFIG_USER_ONLY)
3021 /* Single-stepping ? */
3022 if (dc->tb_flags & S_FLAG) {
3023 TCGLabel *l1 = gen_new_label();
3024 tcg_gen_brcondi_tl(TCG_COND_NE, cpu_PR[PR_SPC], dc->pc, l1);
3025 /* We treat SPC as a break with an odd trap vector. */
3026 cris_evaluate_flags(dc);
3027 t_gen_mov_env_TN(trap_vector, tcg_const_tl(3));
3028 tcg_gen_movi_tl(env_pc, dc->pc + insn_len);
3029 tcg_gen_movi_tl(cpu_PR[PR_SPC], dc->pc + insn_len);
3030 t_gen_raise_exception(EXCP_BREAK);
3031 gen_set_label(l1);
3032 }
3033 #endif
3034 return insn_len;
3035 }
3036
3037 #include "translate_v10.c"
3038
3039 /*
3040 * Delay slots on QEMU/CRIS.
3041 *
3042 * If an exception hits on a delayslot, the core will let ERP (the Exception
3043 * Return Pointer) point to the branch (the previous) insn and set the lsb to
3044 * to give SW a hint that the exception actually hit on the dslot.
3045 *
3046 * CRIS expects all PC addresses to be 16-bit aligned. The lsb is ignored by
3047 * the core and any jmp to an odd addresses will mask off that lsb. It is
3048 * simply there to let sw know there was an exception on a dslot.
3049 *
3050 * When the software returns from an exception, the branch will re-execute.
3051 * On QEMU care needs to be taken when a branch+delayslot sequence is broken
3052 * and the branch and delayslot dont share pages.
3053 *
3054 * The TB contaning the branch insn will set up env->btarget and evaluate
3055 * env->btaken. When the translation loop exits we will note that the branch
3056 * sequence is broken and let env->dslot be the size of the branch insn (those
3057 * vary in length).
3058 *
3059 * The TB contaning the delayslot will have the PC of its real insn (i.e no lsb
3060 * set). It will also expect to have env->dslot setup with the size of the
3061 * delay slot so that env->pc - env->dslot point to the branch insn. This TB
3062 * will execute the dslot and take the branch, either to btarget or just one
3063 * insn ahead.
3064 *
3065 * When exceptions occur, we check for env->dslot in do_interrupt to detect
3066 * broken branch sequences and setup $erp accordingly (i.e let it point to the
3067 * branch and set lsb). Then env->dslot gets cleared so that the exception
3068 * handler can enter. When returning from exceptions (jump $erp) the lsb gets
3069 * masked off and we will reexecute the branch insn.
3070 *
3071 */
3072
3073 /* generate intermediate code for basic block 'tb'. */
3074 void gen_intermediate_code(CPUCRISState *env, struct TranslationBlock *tb)
3075 {
3076 CRISCPU *cpu = cris_env_get_cpu(env);
3077 CPUState *cs = CPU(cpu);
3078 uint32_t pc_start;
3079 unsigned int insn_len;
3080 struct DisasContext ctx;
3081 struct DisasContext *dc = &ctx;
3082 uint32_t next_page_start;
3083 target_ulong npc;
3084 int num_insns;
3085 int max_insns;
3086
3087 if (env->pregs[PR_VR] == 32) {
3088 dc->decoder = crisv32_decoder;
3089 dc->clear_locked_irq = 0;
3090 } else {
3091 dc->decoder = crisv10_decoder;
3092 dc->clear_locked_irq = 1;
3093 }
3094
3095 /* Odd PC indicates that branch is rexecuting due to exception in the
3096 * delayslot, like in real hw.
3097 */
3098 pc_start = tb->pc & ~1;
3099 dc->cpu = cpu;
3100 dc->tb = tb;
3101
3102 dc->is_jmp = DISAS_NEXT;
3103 dc->ppc = pc_start;
3104 dc->pc = pc_start;
3105 dc->singlestep_enabled = cs->singlestep_enabled;
3106 dc->flags_uptodate = 1;
3107 dc->flagx_known = 1;
3108 dc->flags_x = tb->flags & X_FLAG;
3109 dc->cc_x_uptodate = 0;
3110 dc->cc_mask = 0;
3111 dc->update_cc = 0;
3112 dc->clear_prefix = 0;
3113
3114 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
3115 dc->cc_size_uptodate = -1;
3116
3117 /* Decode TB flags. */
3118 dc->tb_flags = tb->flags & (S_FLAG | P_FLAG | U_FLAG \
3119 | X_FLAG | PFIX_FLAG);
3120 dc->delayed_branch = !!(tb->flags & 7);
3121 if (dc->delayed_branch) {
3122 dc->jmp = JMP_INDIRECT;
3123 } else {
3124 dc->jmp = JMP_NOJMP;
3125 }
3126
3127 dc->cpustate_changed = 0;
3128
3129 if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
3130 qemu_log(
3131 "pc=%x %x flg=%" PRIx64 " bt=%x ds=%u ccs=%x\n"
3132 "pid=%x usp=%x\n"
3133 "%x.%x.%x.%x\n"
3134 "%x.%x.%x.%x\n"
3135 "%x.%x.%x.%x\n"
3136 "%x.%x.%x.%x\n",
3137 dc->pc, dc->ppc,
3138 (uint64_t)tb->flags,
3139 env->btarget, (unsigned)tb->flags & 7,
3140 env->pregs[PR_CCS],
3141 env->pregs[PR_PID], env->pregs[PR_USP],
3142 env->regs[0], env->regs[1], env->regs[2], env->regs[3],
3143 env->regs[4], env->regs[5], env->regs[6], env->regs[7],
3144 env->regs[8], env->regs[9],
3145 env->regs[10], env->regs[11],
3146 env->regs[12], env->regs[13],
3147 env->regs[14], env->regs[15]);
3148 qemu_log("--------------\n");
3149 qemu_log("IN: %s\n", lookup_symbol(pc_start));
3150 }
3151
3152 next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
3153 num_insns = 0;
3154 max_insns = tb->cflags & CF_COUNT_MASK;
3155 if (max_insns == 0) {
3156 max_insns = CF_COUNT_MASK;
3157 }
3158 if (max_insns > TCG_MAX_INSNS) {
3159 max_insns = TCG_MAX_INSNS;
3160 }
3161
3162 gen_tb_start(tb);
3163 do {
3164 tcg_gen_insn_start(dc->delayed_branch == 1
3165 ? dc->ppc | 1 : dc->pc);
3166 num_insns++;
3167
3168 if (unlikely(cpu_breakpoint_test(cs, dc->pc, BP_ANY))) {
3169 cris_evaluate_flags(dc);
3170 tcg_gen_movi_tl(env_pc, dc->pc);
3171 t_gen_raise_exception(EXCP_DEBUG);
3172 dc->is_jmp = DISAS_UPDATE;
3173 /* The address covered by the breakpoint must be included in
3174 [tb->pc, tb->pc + tb->size) in order to for it to be
3175 properly cleared -- thus we increment the PC here so that
3176 the logic setting tb->size below does the right thing. */
3177 dc->pc += 2;
3178 break;
3179 }
3180
3181 /* Pretty disas. */
3182 LOG_DIS("%8.8x:\t", dc->pc);
3183
3184 if (num_insns == max_insns && (tb->cflags & CF_LAST_IO)) {
3185 gen_io_start();
3186 }
3187 dc->clear_x = 1;
3188
3189 insn_len = dc->decoder(env, dc);
3190 dc->ppc = dc->pc;
3191 dc->pc += insn_len;
3192 if (dc->clear_x) {
3193 cris_clear_x_flag(dc);
3194 }
3195
3196 /* Check for delayed branches here. If we do it before
3197 actually generating any host code, the simulator will just
3198 loop doing nothing for on this program location. */
3199 if (dc->delayed_branch) {
3200 dc->delayed_branch--;
3201 if (dc->delayed_branch == 0) {
3202 if (tb->flags & 7) {
3203 t_gen_mov_env_TN(dslot, tcg_const_tl(0));
3204 }
3205 if (dc->cpustate_changed || !dc->flagx_known
3206 || (dc->flags_x != (tb->flags & X_FLAG))) {
3207 cris_store_direct_jmp(dc);
3208 }
3209
3210 if (dc->clear_locked_irq) {
3211 dc->clear_locked_irq = 0;
3212 t_gen_mov_env_TN(locked_irq, tcg_const_tl(0));
3213 }
3214
3215 if (dc->jmp == JMP_DIRECT_CC) {
3216 TCGLabel *l1 = gen_new_label();
3217 cris_evaluate_flags(dc);
3218
3219 /* Conditional jmp. */
3220 tcg_gen_brcondi_tl(TCG_COND_EQ,
3221 env_btaken, 0, l1);
3222 gen_goto_tb(dc, 1, dc->jmp_pc);
3223 gen_set_label(l1);
3224 gen_goto_tb(dc, 0, dc->pc);
3225 dc->is_jmp = DISAS_TB_JUMP;
3226 dc->jmp = JMP_NOJMP;
3227 } else if (dc->jmp == JMP_DIRECT) {
3228 cris_evaluate_flags(dc);
3229 gen_goto_tb(dc, 0, dc->jmp_pc);
3230 dc->is_jmp = DISAS_TB_JUMP;
3231 dc->jmp = JMP_NOJMP;
3232 } else {
3233 t_gen_cc_jmp(env_btarget, tcg_const_tl(dc->pc));
3234 dc->is_jmp = DISAS_JUMP;
3235 }
3236 break;
3237 }
3238 }
3239
3240 /* If we are rexecuting a branch due to exceptions on
3241 delay slots dont break. */
3242 if (!(tb->pc & 1) && cs->singlestep_enabled) {
3243 break;
3244 }
3245 } while (!dc->is_jmp && !dc->cpustate_changed
3246 && !tcg_op_buf_full()
3247 && !singlestep
3248 && (dc->pc < next_page_start)
3249 && num_insns < max_insns);
3250
3251 if (dc->clear_locked_irq) {
3252 t_gen_mov_env_TN(locked_irq, tcg_const_tl(0));
3253 }
3254
3255 npc = dc->pc;
3256
3257 if (tb->cflags & CF_LAST_IO)
3258 gen_io_end();
3259 /* Force an update if the per-tb cpu state has changed. */
3260 if (dc->is_jmp == DISAS_NEXT
3261 && (dc->cpustate_changed || !dc->flagx_known
3262 || (dc->flags_x != (tb->flags & X_FLAG)))) {
3263 dc->is_jmp = DISAS_UPDATE;
3264 tcg_gen_movi_tl(env_pc, npc);
3265 }
3266 /* Broken branch+delayslot sequence. */
3267 if (dc->delayed_branch == 1) {
3268 /* Set env->dslot to the size of the branch insn. */
3269 t_gen_mov_env_TN(dslot, tcg_const_tl(dc->pc - dc->ppc));
3270 cris_store_direct_jmp(dc);
3271 }
3272
3273 cris_evaluate_flags(dc);
3274
3275 if (unlikely(cs->singlestep_enabled)) {
3276 if (dc->is_jmp == DISAS_NEXT) {
3277 tcg_gen_movi_tl(env_pc, npc);
3278 }
3279 t_gen_raise_exception(EXCP_DEBUG);
3280 } else {
3281 switch (dc->is_jmp) {
3282 case DISAS_NEXT:
3283 gen_goto_tb(dc, 1, npc);
3284 break;
3285 default:
3286 case DISAS_JUMP:
3287 case DISAS_UPDATE:
3288 /* indicate that the hash table must be used
3289 to find the next TB */
3290 tcg_gen_exit_tb(0);
3291 break;
3292 case DISAS_SWI:
3293 case DISAS_TB_JUMP:
3294 /* nothing more to generate */
3295 break;
3296 }
3297 }
3298 gen_tb_end(tb, num_insns);
3299
3300 tb->size = dc->pc - pc_start;
3301 tb->icount = num_insns;
3302
3303 #ifdef DEBUG_DISAS
3304 #if !DISAS_CRIS
3305 if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
3306 log_target_disas(cs, pc_start, dc->pc - pc_start,
3307 env->pregs[PR_VR]);
3308 qemu_log("\nisize=%d osize=%d\n",
3309 dc->pc - pc_start, tcg_op_buf_count());
3310 }
3311 #endif
3312 #endif
3313 }
3314
3315 void cris_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf,
3316 int flags)
3317 {
3318 CRISCPU *cpu = CRIS_CPU(cs);
3319 CPUCRISState *env = &cpu->env;
3320 int i;
3321 uint32_t srs;
3322
3323 if (!env || !f) {
3324 return;
3325 }
3326
3327 cpu_fprintf(f, "PC=%x CCS=%x btaken=%d btarget=%x\n"
3328 "cc_op=%d cc_src=%d cc_dest=%d cc_result=%x cc_mask=%x\n",
3329 env->pc, env->pregs[PR_CCS], env->btaken, env->btarget,
3330 env->cc_op,
3331 env->cc_src, env->cc_dest, env->cc_result, env->cc_mask);
3332
3333
3334 for (i = 0; i < 16; i++) {
3335 cpu_fprintf(f, "%s=%8.8x ", regnames[i], env->regs[i]);
3336 if ((i + 1) % 4 == 0) {
3337 cpu_fprintf(f, "\n");
3338 }
3339 }
3340 cpu_fprintf(f, "\nspecial regs:\n");
3341 for (i = 0; i < 16; i++) {
3342 cpu_fprintf(f, "%s=%8.8x ", pregnames[i], env->pregs[i]);
3343 if ((i + 1) % 4 == 0) {
3344 cpu_fprintf(f, "\n");
3345 }
3346 }
3347 srs = env->pregs[PR_SRS];
3348 cpu_fprintf(f, "\nsupport function regs bank %x:\n", srs);
3349 if (srs < ARRAY_SIZE(env->sregs)) {
3350 for (i = 0; i < 16; i++) {
3351 cpu_fprintf(f, "s%2.2d=%8.8x ",
3352 i, env->sregs[srs][i]);
3353 if ((i + 1) % 4 == 0) {
3354 cpu_fprintf(f, "\n");
3355 }
3356 }
3357 }
3358 cpu_fprintf(f, "\n\n");
3359
3360 }
3361
3362 void cris_initialize_tcg(void)
3363 {
3364 int i;
3365
3366 cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
3367 cc_x = tcg_global_mem_new(cpu_env,
3368 offsetof(CPUCRISState, cc_x), "cc_x");
3369 cc_src = tcg_global_mem_new(cpu_env,
3370 offsetof(CPUCRISState, cc_src), "cc_src");
3371 cc_dest = tcg_global_mem_new(cpu_env,
3372 offsetof(CPUCRISState, cc_dest),
3373 "cc_dest");
3374 cc_result = tcg_global_mem_new(cpu_env,
3375 offsetof(CPUCRISState, cc_result),
3376 "cc_result");
3377 cc_op = tcg_global_mem_new(cpu_env,
3378 offsetof(CPUCRISState, cc_op), "cc_op");
3379 cc_size = tcg_global_mem_new(cpu_env,
3380 offsetof(CPUCRISState, cc_size),
3381 "cc_size");
3382 cc_mask = tcg_global_mem_new(cpu_env,
3383 offsetof(CPUCRISState, cc_mask),
3384 "cc_mask");
3385
3386 env_pc = tcg_global_mem_new(cpu_env,
3387 offsetof(CPUCRISState, pc),
3388 "pc");
3389 env_btarget = tcg_global_mem_new(cpu_env,
3390 offsetof(CPUCRISState, btarget),
3391 "btarget");
3392 env_btaken = tcg_global_mem_new(cpu_env,
3393 offsetof(CPUCRISState, btaken),
3394 "btaken");
3395 for (i = 0; i < 16; i++) {
3396 cpu_R[i] = tcg_global_mem_new(cpu_env,
3397 offsetof(CPUCRISState, regs[i]),
3398 regnames[i]);
3399 }
3400 for (i = 0; i < 16; i++) {
3401 cpu_PR[i] = tcg_global_mem_new(cpu_env,
3402 offsetof(CPUCRISState, pregs[i]),
3403 pregnames[i]);
3404 }
3405 }
3406
3407 void restore_state_to_opc(CPUCRISState *env, TranslationBlock *tb,
3408 target_ulong *data)
3409 {
3410 env->pc = data[0];
3411 }
AR7 emulation for QEMU