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megasas: add MegaRAID SAS 2108 emulation
[qemu/ar7.git] / target-cris / translate.c
blobe37b04e69d5208a33a3b2dc9c7c1aabd74b0aead
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 "exec/helper-proto.h"
30 #include "mmu.h"
31 #include "exec/cpu_ldst.h"
32 #include "crisv32-decode.h"
33
34 #include "exec/helper-gen.h"
35
36 #include "trace-tcg.h"
37
38
39 #define DISAS_CRIS 0
40 #if DISAS_CRIS
41 # define LOG_DIS(...) qemu_log_mask(CPU_LOG_TB_IN_ASM, ## __VA_ARGS__)
42 #else
43 # define LOG_DIS(...) do { } while (0)
44 #endif
45
46 #define D(x)
47 #define BUG() (gen_BUG(dc, __FILE__, __LINE__))
48 #define BUG_ON(x) ({if (x) BUG();})
49
50 #define DISAS_SWI 5
51
52 /* Used by the decoder. */
53 #define EXTRACT_FIELD(src, start, end) \
54 (((src) >> start) & ((1 << (end - start + 1)) - 1))
55
56 #define CC_MASK_NZ 0xc
57 #define CC_MASK_NZV 0xe
58 #define CC_MASK_NZVC 0xf
59 #define CC_MASK_RNZV 0x10e
60
61 static TCGv_ptr cpu_env;
62 static TCGv cpu_R[16];
63 static TCGv cpu_PR[16];
64 static TCGv cc_x;
65 static TCGv cc_src;
66 static TCGv cc_dest;
67 static TCGv cc_result;
68 static TCGv cc_op;
69 static TCGv cc_size;
70 static TCGv cc_mask;
71
72 static TCGv env_btaken;
73 static TCGv env_btarget;
74 static TCGv env_pc;
75
76 #include "exec/gen-icount.h"
77
78 /* This is the state at translation time. */
79 typedef struct DisasContext {
80 CRISCPU *cpu;
81 target_ulong pc, ppc;
82
83 /* Decoder. */
84 unsigned int (*decoder)(CPUCRISState *env, struct DisasContext *dc);
85 uint32_t ir;
86 uint32_t opcode;
87 unsigned int op1;
88 unsigned int op2;
89 unsigned int zsize, zzsize;
90 unsigned int mode;
91 unsigned int postinc;
92
93 unsigned int size;
94 unsigned int src;
95 unsigned int dst;
96 unsigned int cond;
97
98 int update_cc;
99 int cc_op;
100 int cc_size;
101 uint32_t cc_mask;
102
103 int cc_size_uptodate; /* -1 invalid or last written value. */
104
105 int cc_x_uptodate; /* 1 - ccs, 2 - known | X_FLAG. 0 not uptodate. */
106 int flags_uptodate; /* Wether or not $ccs is uptodate. */
107 int flagx_known; /* Wether or not flags_x has the x flag known at
108 translation time. */
109 int flags_x;
110
111 int clear_x; /* Clear x after this insn? */
112 int clear_prefix; /* Clear prefix after this insn? */
113 int clear_locked_irq; /* Clear the irq lockout. */
114 int cpustate_changed;
115 unsigned int tb_flags; /* tb dependent flags. */
116 int is_jmp;
117
118 #define JMP_NOJMP 0
119 #define JMP_DIRECT 1
120 #define JMP_DIRECT_CC 2
121 #define JMP_INDIRECT 3
122 int jmp; /* 0=nojmp, 1=direct, 2=indirect. */
123 uint32_t jmp_pc;
124
125 int delayed_branch;
126
127 struct TranslationBlock *tb;
128 int singlestep_enabled;
129 } DisasContext;
130
131 static void gen_BUG(DisasContext *dc, const char *file, int line)
132 {
133 printf("BUG: pc=%x %s %d\n", dc->pc, file, line);
134 qemu_log("BUG: pc=%x %s %d\n", dc->pc, file, line);
135 cpu_abort(CPU(dc->cpu), "%s:%d\n", file, line);
136 }
137
138 static const char *regnames[] =
139 {
140 "$r0", "$r1", "$r2", "$r3",
141 "$r4", "$r5", "$r6", "$r7",
142 "$r8", "$r9", "$r10", "$r11",
143 "$r12", "$r13", "$sp", "$acr",
144 };
145 static const char *pregnames[] =
146 {
147 "$bz", "$vr", "$pid", "$srs",
148 "$wz", "$exs", "$eda", "$mof",
149 "$dz", "$ebp", "$erp", "$srp",
150 "$nrp", "$ccs", "$usp", "$spc",
151 };
152
153 /* We need this table to handle preg-moves with implicit width. */
154 static int preg_sizes[] = {
155 1, /* bz. */
156 1, /* vr. */
157 4, /* pid. */
158 1, /* srs. */
159 2, /* wz. */
160 4, 4, 4,
161 4, 4, 4, 4,
162 4, 4, 4, 4,
163 };
164
165 #define t_gen_mov_TN_env(tn, member) \
166 tcg_gen_ld_tl(tn, cpu_env, offsetof(CPUCRISState, member))
167 #define t_gen_mov_env_TN(member, tn) \
168 tcg_gen_st_tl(tn, cpu_env, offsetof(CPUCRISState, member))
169
170 static inline void t_gen_mov_TN_preg(TCGv tn, int r)
171 {
172 if (r < 0 || r > 15) {
173 fprintf(stderr, "wrong register read $p%d\n", r);
174 }
175 if (r == PR_BZ || r == PR_WZ || r == PR_DZ) {
176 tcg_gen_mov_tl(tn, tcg_const_tl(0));
177 } else if (r == PR_VR) {
178 tcg_gen_mov_tl(tn, tcg_const_tl(32));
179 } else {
180 tcg_gen_mov_tl(tn, cpu_PR[r]);
181 }
182 }
183 static inline void t_gen_mov_preg_TN(DisasContext *dc, int r, TCGv tn)
184 {
185 if (r < 0 || r > 15) {
186 fprintf(stderr, "wrong register write $p%d\n", r);
187 }
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 int l1;
319
320 l1 = gen_new_label();
321
322 /*
323 * d <<= 1
324 * if (d >= s)
325 * d -= s;
326 */
327 tcg_gen_shli_tl(d, a, 1);
328 tcg_gen_brcond_tl(TCG_COND_LTU, d, b, l1);
329 tcg_gen_sub_tl(d, d, b);
330 gen_set_label(l1);
331 }
332
333 static void t_gen_cris_mstep(TCGv d, TCGv a, TCGv b, TCGv ccs)
334 {
335 TCGv t;
336
337 /*
338 * d <<= 1
339 * if (n)
340 * d += s;
341 */
342 t = tcg_temp_new();
343 tcg_gen_shli_tl(d, a, 1);
344 tcg_gen_shli_tl(t, ccs, 31 - 3);
345 tcg_gen_sari_tl(t, t, 31);
346 tcg_gen_and_tl(t, t, b);
347 tcg_gen_add_tl(d, d, t);
348 tcg_temp_free(t);
349 }
350
351 /* Extended arithmetics on CRIS. */
352 static inline void t_gen_add_flag(TCGv d, int flag)
353 {
354 TCGv c;
355
356 c = tcg_temp_new();
357 t_gen_mov_TN_preg(c, PR_CCS);
358 /* Propagate carry into d. */
359 tcg_gen_andi_tl(c, c, 1 << flag);
360 if (flag) {
361 tcg_gen_shri_tl(c, c, flag);
362 }
363 tcg_gen_add_tl(d, d, c);
364 tcg_temp_free(c);
365 }
366
367 static inline void t_gen_addx_carry(DisasContext *dc, TCGv d)
368 {
369 if (dc->flagx_known) {
370 if (dc->flags_x) {
371 TCGv c;
372
373 c = tcg_temp_new();
374 t_gen_mov_TN_preg(c, PR_CCS);
375 /* C flag is already at bit 0. */
376 tcg_gen_andi_tl(c, c, C_FLAG);
377 tcg_gen_add_tl(d, d, c);
378 tcg_temp_free(c);
379 }
380 } else {
381 TCGv x, c;
382
383 x = tcg_temp_new();
384 c = tcg_temp_new();
385 t_gen_mov_TN_preg(x, PR_CCS);
386 tcg_gen_mov_tl(c, x);
387
388 /* Propagate carry into d if X is set. Branch free. */
389 tcg_gen_andi_tl(c, c, C_FLAG);
390 tcg_gen_andi_tl(x, x, X_FLAG);
391 tcg_gen_shri_tl(x, x, 4);
392
393 tcg_gen_and_tl(x, x, c);
394 tcg_gen_add_tl(d, d, x);
395 tcg_temp_free(x);
396 tcg_temp_free(c);
397 }
398 }
399
400 static inline void t_gen_subx_carry(DisasContext *dc, TCGv d)
401 {
402 if (dc->flagx_known) {
403 if (dc->flags_x) {
404 TCGv c;
405
406 c = tcg_temp_new();
407 t_gen_mov_TN_preg(c, PR_CCS);
408 /* C flag is already at bit 0. */
409 tcg_gen_andi_tl(c, c, C_FLAG);
410 tcg_gen_sub_tl(d, d, c);
411 tcg_temp_free(c);
412 }
413 } else {
414 TCGv x, c;
415
416 x = tcg_temp_new();
417 c = tcg_temp_new();
418 t_gen_mov_TN_preg(x, PR_CCS);
419 tcg_gen_mov_tl(c, x);
420
421 /* Propagate carry into d if X is set. Branch free. */
422 tcg_gen_andi_tl(c, c, C_FLAG);
423 tcg_gen_andi_tl(x, x, X_FLAG);
424 tcg_gen_shri_tl(x, x, 4);
425
426 tcg_gen_and_tl(x, x, c);
427 tcg_gen_sub_tl(d, d, x);
428 tcg_temp_free(x);
429 tcg_temp_free(c);
430 }
431 }
432
433 /* Swap the two bytes within each half word of the s operand.
434 T0 = ((T0 << 8) & 0xff00ff00) | ((T0 >> 8) & 0x00ff00ff) */
435 static inline void t_gen_swapb(TCGv d, TCGv s)
436 {
437 TCGv t, org_s;
438
439 t = tcg_temp_new();
440 org_s = tcg_temp_new();
441
442 /* d and s may refer to the same object. */
443 tcg_gen_mov_tl(org_s, s);
444 tcg_gen_shli_tl(t, org_s, 8);
445 tcg_gen_andi_tl(d, t, 0xff00ff00);
446 tcg_gen_shri_tl(t, org_s, 8);
447 tcg_gen_andi_tl(t, t, 0x00ff00ff);
448 tcg_gen_or_tl(d, d, t);
449 tcg_temp_free(t);
450 tcg_temp_free(org_s);
451 }
452
453 /* Swap the halfwords of the s operand. */
454 static inline void t_gen_swapw(TCGv d, TCGv s)
455 {
456 TCGv t;
457 /* d and s refer the same object. */
458 t = tcg_temp_new();
459 tcg_gen_mov_tl(t, s);
460 tcg_gen_shli_tl(d, t, 16);
461 tcg_gen_shri_tl(t, t, 16);
462 tcg_gen_or_tl(d, d, t);
463 tcg_temp_free(t);
464 }
465
466 /* Reverse the within each byte.
467 T0 = (((T0 << 7) & 0x80808080) |
468 ((T0 << 5) & 0x40404040) |
469 ((T0 << 3) & 0x20202020) |
470 ((T0 << 1) & 0x10101010) |
471 ((T0 >> 1) & 0x08080808) |
472 ((T0 >> 3) & 0x04040404) |
473 ((T0 >> 5) & 0x02020202) |
474 ((T0 >> 7) & 0x01010101));
475 */
476 static inline void t_gen_swapr(TCGv d, TCGv s)
477 {
478 struct {
479 int shift; /* LSL when positive, LSR when negative. */
480 uint32_t mask;
481 } bitrev[] = {
482 {7, 0x80808080},
483 {5, 0x40404040},
484 {3, 0x20202020},
485 {1, 0x10101010},
486 {-1, 0x08080808},
487 {-3, 0x04040404},
488 {-5, 0x02020202},
489 {-7, 0x01010101}
490 };
491 int i;
492 TCGv t, org_s;
493
494 /* d and s refer the same object. */
495 t = tcg_temp_new();
496 org_s = tcg_temp_new();
497 tcg_gen_mov_tl(org_s, s);
498
499 tcg_gen_shli_tl(t, org_s, bitrev[0].shift);
500 tcg_gen_andi_tl(d, t, bitrev[0].mask);
501 for (i = 1; i < ARRAY_SIZE(bitrev); i++) {
502 if (bitrev[i].shift >= 0) {
503 tcg_gen_shli_tl(t, org_s, bitrev[i].shift);
504 } else {
505 tcg_gen_shri_tl(t, org_s, -bitrev[i].shift);
506 }
507 tcg_gen_andi_tl(t, t, bitrev[i].mask);
508 tcg_gen_or_tl(d, d, t);
509 }
510 tcg_temp_free(t);
511 tcg_temp_free(org_s);
512 }
513
514 static void t_gen_cc_jmp(TCGv pc_true, TCGv pc_false)
515 {
516 int l1;
517
518 l1 = gen_new_label();
519
520 /* Conditional jmp. */
521 tcg_gen_mov_tl(env_pc, pc_false);
522 tcg_gen_brcondi_tl(TCG_COND_EQ, env_btaken, 0, l1);
523 tcg_gen_mov_tl(env_pc, pc_true);
524 gen_set_label(l1);
525 }
526
527 static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest)
528 {
529 TranslationBlock *tb;
530 tb = dc->tb;
531 if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) {
532 tcg_gen_goto_tb(n);
533 tcg_gen_movi_tl(env_pc, dest);
534 tcg_gen_exit_tb((uintptr_t)tb + n);
535 } else {
536 tcg_gen_movi_tl(env_pc, dest);
537 tcg_gen_exit_tb(0);
538 }
539 }
540
541 static inline void cris_clear_x_flag(DisasContext *dc)
542 {
543 if (dc->flagx_known && dc->flags_x) {
544 dc->flags_uptodate = 0;
545 }
546
547 dc->flagx_known = 1;
548 dc->flags_x = 0;
549 }
550
551 static void cris_flush_cc_state(DisasContext *dc)
552 {
553 if (dc->cc_size_uptodate != dc->cc_size) {
554 tcg_gen_movi_tl(cc_size, dc->cc_size);
555 dc->cc_size_uptodate = dc->cc_size;
556 }
557 tcg_gen_movi_tl(cc_op, dc->cc_op);
558 tcg_gen_movi_tl(cc_mask, dc->cc_mask);
559 }
560
561 static void cris_evaluate_flags(DisasContext *dc)
562 {
563 if (dc->flags_uptodate) {
564 return;
565 }
566
567 cris_flush_cc_state(dc);
568
569 switch (dc->cc_op) {
570 case CC_OP_MCP:
571 gen_helper_evaluate_flags_mcp(cpu_PR[PR_CCS], cpu_env,
572 cpu_PR[PR_CCS], cc_src,
573 cc_dest, cc_result);
574 break;
575 case CC_OP_MULS:
576 gen_helper_evaluate_flags_muls(cpu_PR[PR_CCS], cpu_env,
577 cpu_PR[PR_CCS], cc_result,
578 cpu_PR[PR_MOF]);
579 break;
580 case CC_OP_MULU:
581 gen_helper_evaluate_flags_mulu(cpu_PR[PR_CCS], cpu_env,
582 cpu_PR[PR_CCS], cc_result,
583 cpu_PR[PR_MOF]);
584 break;
585 case CC_OP_MOVE:
586 case CC_OP_AND:
587 case CC_OP_OR:
588 case CC_OP_XOR:
589 case CC_OP_ASR:
590 case CC_OP_LSR:
591 case CC_OP_LSL:
592 switch (dc->cc_size) {
593 case 4:
594 gen_helper_evaluate_flags_move_4(cpu_PR[PR_CCS],
595 cpu_env, cpu_PR[PR_CCS], cc_result);
596 break;
597 case 2:
598 gen_helper_evaluate_flags_move_2(cpu_PR[PR_CCS],
599 cpu_env, cpu_PR[PR_CCS], cc_result);
600 break;
601 default:
602 gen_helper_evaluate_flags(cpu_env);
603 break;
604 }
605 break;
606 case CC_OP_FLAGS:
607 /* live. */
608 break;
609 case CC_OP_SUB:
610 case CC_OP_CMP:
611 if (dc->cc_size == 4) {
612 gen_helper_evaluate_flags_sub_4(cpu_PR[PR_CCS], cpu_env,
613 cpu_PR[PR_CCS], cc_src, cc_dest, cc_result);
614 } else {
615 gen_helper_evaluate_flags(cpu_env);
616 }
617
618 break;
619 default:
620 switch (dc->cc_size) {
621 case 4:
622 gen_helper_evaluate_flags_alu_4(cpu_PR[PR_CCS], cpu_env,
623 cpu_PR[PR_CCS], cc_src, cc_dest, cc_result);
624 break;
625 default:
626 gen_helper_evaluate_flags(cpu_env);
627 break;
628 }
629 break;
630 }
631
632 if (dc->flagx_known) {
633 if (dc->flags_x) {
634 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], X_FLAG);
635 } else if (dc->cc_op == CC_OP_FLAGS) {
636 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~X_FLAG);
637 }
638 }
639 dc->flags_uptodate = 1;
640 }
641
642 static void cris_cc_mask(DisasContext *dc, unsigned int mask)
643 {
644 uint32_t ovl;
645
646 if (!mask) {
647 dc->update_cc = 0;
648 return;
649 }
650
651 /* Check if we need to evaluate the condition codes due to
652 CC overlaying. */
653 ovl = (dc->cc_mask ^ mask) & ~mask;
654 if (ovl) {
655 /* TODO: optimize this case. It trigs all the time. */
656 cris_evaluate_flags(dc);
657 }
658 dc->cc_mask = mask;
659 dc->update_cc = 1;
660 }
661
662 static void cris_update_cc_op(DisasContext *dc, int op, int size)
663 {
664 dc->cc_op = op;
665 dc->cc_size = size;
666 dc->flags_uptodate = 0;
667 }
668
669 static inline void cris_update_cc_x(DisasContext *dc)
670 {
671 /* Save the x flag state at the time of the cc snapshot. */
672 if (dc->flagx_known) {
673 if (dc->cc_x_uptodate == (2 | dc->flags_x)) {
674 return;
675 }
676 tcg_gen_movi_tl(cc_x, dc->flags_x);
677 dc->cc_x_uptodate = 2 | dc->flags_x;
678 } else {
679 tcg_gen_andi_tl(cc_x, cpu_PR[PR_CCS], X_FLAG);
680 dc->cc_x_uptodate = 1;
681 }
682 }
683
684 /* Update cc prior to executing ALU op. Needs source operands untouched. */
685 static void cris_pre_alu_update_cc(DisasContext *dc, int op,
686 TCGv dst, TCGv src, int size)
687 {
688 if (dc->update_cc) {
689 cris_update_cc_op(dc, op, size);
690 tcg_gen_mov_tl(cc_src, src);
691
692 if (op != CC_OP_MOVE
693 && op != CC_OP_AND
694 && op != CC_OP_OR
695 && op != CC_OP_XOR
696 && op != CC_OP_ASR
697 && op != CC_OP_LSR
698 && op != CC_OP_LSL) {
699 tcg_gen_mov_tl(cc_dest, dst);
700 }
701
702 cris_update_cc_x(dc);
703 }
704 }
705
706 /* Update cc after executing ALU op. needs the result. */
707 static inline void cris_update_result(DisasContext *dc, TCGv res)
708 {
709 if (dc->update_cc) {
710 tcg_gen_mov_tl(cc_result, res);
711 }
712 }
713
714 /* Returns one if the write back stage should execute. */
715 static void cris_alu_op_exec(DisasContext *dc, int op,
716 TCGv dst, TCGv a, TCGv b, int size)
717 {
718 /* Emit the ALU insns. */
719 switch (op) {
720 case CC_OP_ADD:
721 tcg_gen_add_tl(dst, a, b);
722 /* Extended arithmetics. */
723 t_gen_addx_carry(dc, dst);
724 break;
725 case CC_OP_ADDC:
726 tcg_gen_add_tl(dst, a, b);
727 t_gen_add_flag(dst, 0); /* C_FLAG. */
728 break;
729 case CC_OP_MCP:
730 tcg_gen_add_tl(dst, a, b);
731 t_gen_add_flag(dst, 8); /* R_FLAG. */
732 break;
733 case CC_OP_SUB:
734 tcg_gen_sub_tl(dst, a, b);
735 /* Extended arithmetics. */
736 t_gen_subx_carry(dc, dst);
737 break;
738 case CC_OP_MOVE:
739 tcg_gen_mov_tl(dst, b);
740 break;
741 case CC_OP_OR:
742 tcg_gen_or_tl(dst, a, b);
743 break;
744 case CC_OP_AND:
745 tcg_gen_and_tl(dst, a, b);
746 break;
747 case CC_OP_XOR:
748 tcg_gen_xor_tl(dst, a, b);
749 break;
750 case CC_OP_LSL:
751 t_gen_lsl(dst, a, b);
752 break;
753 case CC_OP_LSR:
754 t_gen_lsr(dst, a, b);
755 break;
756 case CC_OP_ASR:
757 t_gen_asr(dst, a, b);
758 break;
759 case CC_OP_NEG:
760 tcg_gen_neg_tl(dst, b);
761 /* Extended arithmetics. */
762 t_gen_subx_carry(dc, dst);
763 break;
764 case CC_OP_LZ:
765 gen_helper_lz(dst, b);
766 break;
767 case CC_OP_MULS:
768 tcg_gen_muls2_tl(dst, cpu_PR[PR_MOF], a, b);
769 break;
770 case CC_OP_MULU:
771 tcg_gen_mulu2_tl(dst, cpu_PR[PR_MOF], a, b);
772 break;
773 case CC_OP_DSTEP:
774 t_gen_cris_dstep(dst, a, b);
775 break;
776 case CC_OP_MSTEP:
777 t_gen_cris_mstep(dst, a, b, cpu_PR[PR_CCS]);
778 break;
779 case CC_OP_BOUND:
780 {
781 int l1;
782 l1 = gen_new_label();
783 tcg_gen_mov_tl(dst, a);
784 tcg_gen_brcond_tl(TCG_COND_LEU, a, b, l1);
785 tcg_gen_mov_tl(dst, b);
786 gen_set_label(l1);
787 }
788 break;
789 case CC_OP_CMP:
790 tcg_gen_sub_tl(dst, a, b);
791 /* Extended arithmetics. */
792 t_gen_subx_carry(dc, dst);
793 break;
794 default:
795 qemu_log("illegal ALU op.\n");
796 BUG();
797 break;
798 }
799
800 if (size == 1) {
801 tcg_gen_andi_tl(dst, dst, 0xff);
802 } else if (size == 2) {
803 tcg_gen_andi_tl(dst, dst, 0xffff);
804 }
805 }
806
807 static void cris_alu(DisasContext *dc, int op,
808 TCGv d, TCGv op_a, TCGv op_b, int size)
809 {
810 TCGv tmp;
811 int writeback;
812
813 writeback = 1;
814
815 if (op == CC_OP_CMP) {
816 tmp = tcg_temp_new();
817 writeback = 0;
818 } else if (size == 4) {
819 tmp = d;
820 writeback = 0;
821 } else {
822 tmp = tcg_temp_new();
823 }
824
825
826 cris_pre_alu_update_cc(dc, op, op_a, op_b, size);
827 cris_alu_op_exec(dc, op, tmp, op_a, op_b, size);
828 cris_update_result(dc, tmp);
829
830 /* Writeback. */
831 if (writeback) {
832 if (size == 1) {
833 tcg_gen_andi_tl(d, d, ~0xff);
834 } else {
835 tcg_gen_andi_tl(d, d, ~0xffff);
836 }
837 tcg_gen_or_tl(d, d, tmp);
838 }
839 if (!TCGV_EQUAL(tmp, d)) {
840 tcg_temp_free(tmp);
841 }
842 }
843
844 static int arith_cc(DisasContext *dc)
845 {
846 if (dc->update_cc) {
847 switch (dc->cc_op) {
848 case CC_OP_ADDC: return 1;
849 case CC_OP_ADD: return 1;
850 case CC_OP_SUB: return 1;
851 case CC_OP_DSTEP: return 1;
852 case CC_OP_LSL: return 1;
853 case CC_OP_LSR: return 1;
854 case CC_OP_ASR: return 1;
855 case CC_OP_CMP: return 1;
856 case CC_OP_NEG: return 1;
857 case CC_OP_OR: return 1;
858 case CC_OP_AND: return 1;
859 case CC_OP_XOR: return 1;
860 case CC_OP_MULU: return 1;
861 case CC_OP_MULS: return 1;
862 default:
863 return 0;
864 }
865 }
866 return 0;
867 }
868
869 static void gen_tst_cc (DisasContext *dc, TCGv cc, int cond)
870 {
871 int arith_opt, move_opt;
872
873 /* TODO: optimize more condition codes. */
874
875 /*
876 * If the flags are live, we've gotta look into the bits of CCS.
877 * Otherwise, if we just did an arithmetic operation we try to
878 * evaluate the condition code faster.
879 *
880 * When this function is done, T0 should be non-zero if the condition
881 * code is true.
882 */
883 arith_opt = arith_cc(dc) && !dc->flags_uptodate;
884 move_opt = (dc->cc_op == CC_OP_MOVE);
885 switch (cond) {
886 case CC_EQ:
887 if ((arith_opt || move_opt)
888 && dc->cc_x_uptodate != (2 | X_FLAG)) {
889 tcg_gen_setcond_tl(TCG_COND_EQ, cc,
890 cc_result, tcg_const_tl(0));
891 } else {
892 cris_evaluate_flags(dc);
893 tcg_gen_andi_tl(cc,
894 cpu_PR[PR_CCS], Z_FLAG);
895 }
896 break;
897 case CC_NE:
898 if ((arith_opt || move_opt)
899 && dc->cc_x_uptodate != (2 | X_FLAG)) {
900 tcg_gen_mov_tl(cc, cc_result);
901 } else {
902 cris_evaluate_flags(dc);
903 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
904 Z_FLAG);
905 tcg_gen_andi_tl(cc, cc, Z_FLAG);
906 }
907 break;
908 case CC_CS:
909 cris_evaluate_flags(dc);
910 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], C_FLAG);
911 break;
912 case CC_CC:
913 cris_evaluate_flags(dc);
914 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], C_FLAG);
915 tcg_gen_andi_tl(cc, cc, C_FLAG);
916 break;
917 case CC_VS:
918 cris_evaluate_flags(dc);
919 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], V_FLAG);
920 break;
921 case CC_VC:
922 cris_evaluate_flags(dc);
923 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
924 V_FLAG);
925 tcg_gen_andi_tl(cc, cc, V_FLAG);
926 break;
927 case CC_PL:
928 if (arith_opt || move_opt) {
929 int bits = 31;
930
931 if (dc->cc_size == 1) {
932 bits = 7;
933 } else if (dc->cc_size == 2) {
934 bits = 15;
935 }
936
937 tcg_gen_shri_tl(cc, cc_result, bits);
938 tcg_gen_xori_tl(cc, cc, 1);
939 } else {
940 cris_evaluate_flags(dc);
941 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
942 N_FLAG);
943 tcg_gen_andi_tl(cc, cc, N_FLAG);
944 }
945 break;
946 case CC_MI:
947 if (arith_opt || move_opt) {
948 int bits = 31;
949
950 if (dc->cc_size == 1) {
951 bits = 7;
952 } else if (dc->cc_size == 2) {
953 bits = 15;
954 }
955
956 tcg_gen_shri_tl(cc, cc_result, bits);
957 tcg_gen_andi_tl(cc, cc, 1);
958 } else {
959 cris_evaluate_flags(dc);
960 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS],
961 N_FLAG);
962 }
963 break;
964 case CC_LS:
965 cris_evaluate_flags(dc);
966 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS],
967 C_FLAG | Z_FLAG);
968 break;
969 case CC_HI:
970 cris_evaluate_flags(dc);
971 {
972 TCGv tmp;
973
974 tmp = tcg_temp_new();
975 tcg_gen_xori_tl(tmp, cpu_PR[PR_CCS],
976 C_FLAG | Z_FLAG);
977 /* Overlay the C flag on top of the Z. */
978 tcg_gen_shli_tl(cc, tmp, 2);
979 tcg_gen_and_tl(cc, tmp, cc);
980 tcg_gen_andi_tl(cc, cc, Z_FLAG);
981
982 tcg_temp_free(tmp);
983 }
984 break;
985 case CC_GE:
986 cris_evaluate_flags(dc);
987 /* Overlay the V flag on top of the N. */
988 tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2);
989 tcg_gen_xor_tl(cc,
990 cpu_PR[PR_CCS], cc);
991 tcg_gen_andi_tl(cc, cc, N_FLAG);
992 tcg_gen_xori_tl(cc, cc, N_FLAG);
993 break;
994 case CC_LT:
995 cris_evaluate_flags(dc);
996 /* Overlay the V flag on top of the N. */
997 tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2);
998 tcg_gen_xor_tl(cc,
999 cpu_PR[PR_CCS], cc);
1000 tcg_gen_andi_tl(cc, cc, N_FLAG);
1001 break;
1002 case CC_GT:
1003 cris_evaluate_flags(dc);
1004 {
1005 TCGv n, z;
1006
1007 n = tcg_temp_new();
1008 z = tcg_temp_new();
1009
1010 /* To avoid a shift we overlay everything on
1011 the V flag. */
1012 tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2);
1013 tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1);
1014 /* invert Z. */
1015 tcg_gen_xori_tl(z, z, 2);
1016
1017 tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]);
1018 tcg_gen_xori_tl(n, n, 2);
1019 tcg_gen_and_tl(cc, z, n);
1020 tcg_gen_andi_tl(cc, cc, 2);
1021
1022 tcg_temp_free(n);
1023 tcg_temp_free(z);
1024 }
1025 break;
1026 case CC_LE:
1027 cris_evaluate_flags(dc);
1028 {
1029 TCGv n, z;
1030
1031 n = tcg_temp_new();
1032 z = tcg_temp_new();
1033
1034 /* To avoid a shift we overlay everything on
1035 the V flag. */
1036 tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2);
1037 tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1);
1038
1039 tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]);
1040 tcg_gen_or_tl(cc, z, n);
1041 tcg_gen_andi_tl(cc, cc, 2);
1042
1043 tcg_temp_free(n);
1044 tcg_temp_free(z);
1045 }
1046 break;
1047 case CC_P:
1048 cris_evaluate_flags(dc);
1049 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], P_FLAG);
1050 break;
1051 case CC_A:
1052 tcg_gen_movi_tl(cc, 1);
1053 break;
1054 default:
1055 BUG();
1056 break;
1057 };
1058 }
1059
1060 static void cris_store_direct_jmp(DisasContext *dc)
1061 {
1062 /* Store the direct jmp state into the cpu-state. */
1063 if (dc->jmp == JMP_DIRECT || dc->jmp == JMP_DIRECT_CC) {
1064 if (dc->jmp == JMP_DIRECT) {
1065 tcg_gen_movi_tl(env_btaken, 1);
1066 }
1067 tcg_gen_movi_tl(env_btarget, dc->jmp_pc);
1068 dc->jmp = JMP_INDIRECT;
1069 }
1070 }
1071
1072 static void cris_prepare_cc_branch (DisasContext *dc,
1073 int offset, int cond)
1074 {
1075 /* This helps us re-schedule the micro-code to insns in delay-slots
1076 before the actual jump. */
1077 dc->delayed_branch = 2;
1078 dc->jmp = JMP_DIRECT_CC;
1079 dc->jmp_pc = dc->pc + offset;
1080
1081 gen_tst_cc(dc, env_btaken, cond);
1082 tcg_gen_movi_tl(env_btarget, dc->jmp_pc);
1083 }
1084
1085
1086 /* jumps, when the dest is in a live reg for example. Direct should be set
1087 when the dest addr is constant to allow tb chaining. */
1088 static inline void cris_prepare_jmp (DisasContext *dc, unsigned int type)
1089 {
1090 /* This helps us re-schedule the micro-code to insns in delay-slots
1091 before the actual jump. */
1092 dc->delayed_branch = 2;
1093 dc->jmp = type;
1094 if (type == JMP_INDIRECT) {
1095 tcg_gen_movi_tl(env_btaken, 1);
1096 }
1097 }
1098
1099 static void gen_load64(DisasContext *dc, TCGv_i64 dst, TCGv addr)
1100 {
1101 int mem_index = cpu_mmu_index(&dc->cpu->env);
1102
1103 /* If we get a fault on a delayslot we must keep the jmp state in
1104 the cpu-state to be able to re-execute the jmp. */
1105 if (dc->delayed_branch == 1) {
1106 cris_store_direct_jmp(dc);
1107 }
1108
1109 tcg_gen_qemu_ld_i64(dst, addr, mem_index, MO_TEQ);
1110 }
1111
1112 static void gen_load(DisasContext *dc, TCGv dst, TCGv addr,
1113 unsigned int size, int sign)
1114 {
1115 int mem_index = cpu_mmu_index(&dc->cpu->env);
1116
1117 /* If we get a fault on a delayslot we must keep the jmp state in
1118 the cpu-state to be able to re-execute the jmp. */
1119 if (dc->delayed_branch == 1) {
1120 cris_store_direct_jmp(dc);
1121 }
1122
1123 tcg_gen_qemu_ld_tl(dst, addr, mem_index,
1124 MO_TE + ctz32(size) + (sign ? MO_SIGN : 0));
1125 }
1126
1127 static void gen_store (DisasContext *dc, TCGv addr, TCGv val,
1128 unsigned int size)
1129 {
1130 int mem_index = cpu_mmu_index(&dc->cpu->env);
1131
1132 /* If we get a fault on a delayslot we must keep the jmp state in
1133 the cpu-state to be able to re-execute the jmp. */
1134 if (dc->delayed_branch == 1) {
1135 cris_store_direct_jmp(dc);
1136 }
1137
1138
1139 /* Conditional writes. We only support the kind were X and P are known
1140 at translation time. */
1141 if (dc->flagx_known && dc->flags_x && (dc->tb_flags & P_FLAG)) {
1142 dc->postinc = 0;
1143 cris_evaluate_flags(dc);
1144 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], C_FLAG);
1145 return;
1146 }
1147
1148 tcg_gen_qemu_st_tl(val, addr, mem_index, MO_TE + ctz32(size));
1149
1150 if (dc->flagx_known && dc->flags_x) {
1151 cris_evaluate_flags(dc);
1152 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~C_FLAG);
1153 }
1154 }
1155
1156 static inline void t_gen_sext(TCGv d, TCGv s, int size)
1157 {
1158 if (size == 1) {
1159 tcg_gen_ext8s_i32(d, s);
1160 } else if (size == 2) {
1161 tcg_gen_ext16s_i32(d, s);
1162 } else if (!TCGV_EQUAL(d, s)) {
1163 tcg_gen_mov_tl(d, s);
1164 }
1165 }
1166
1167 static inline void t_gen_zext(TCGv d, TCGv s, int size)
1168 {
1169 if (size == 1) {
1170 tcg_gen_ext8u_i32(d, s);
1171 } else if (size == 2) {
1172 tcg_gen_ext16u_i32(d, s);
1173 } else if (!TCGV_EQUAL(d, s)) {
1174 tcg_gen_mov_tl(d, s);
1175 }
1176 }
1177
1178 #if DISAS_CRIS
1179 static char memsize_char(int size)
1180 {
1181 switch (size) {
1182 case 1: return 'b'; break;
1183 case 2: return 'w'; break;
1184 case 4: return 'd'; break;
1185 default:
1186 return 'x';
1187 break;
1188 }
1189 }
1190 #endif
1191
1192 static inline unsigned int memsize_z(DisasContext *dc)
1193 {
1194 return dc->zsize + 1;
1195 }
1196
1197 static inline unsigned int memsize_zz(DisasContext *dc)
1198 {
1199 switch (dc->zzsize) {
1200 case 0: return 1;
1201 case 1: return 2;
1202 default:
1203 return 4;
1204 }
1205 }
1206
1207 static inline void do_postinc (DisasContext *dc, int size)
1208 {
1209 if (dc->postinc) {
1210 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], size);
1211 }
1212 }
1213
1214 static inline void dec_prep_move_r(DisasContext *dc, int rs, int rd,
1215 int size, int s_ext, TCGv dst)
1216 {
1217 if (s_ext) {
1218 t_gen_sext(dst, cpu_R[rs], size);
1219 } else {
1220 t_gen_zext(dst, cpu_R[rs], size);
1221 }
1222 }
1223
1224 /* Prepare T0 and T1 for a register alu operation.
1225 s_ext decides if the operand1 should be sign-extended or zero-extended when
1226 needed. */
1227 static void dec_prep_alu_r(DisasContext *dc, int rs, int rd,
1228 int size, int s_ext, TCGv dst, TCGv src)
1229 {
1230 dec_prep_move_r(dc, rs, rd, size, s_ext, src);
1231
1232 if (s_ext) {
1233 t_gen_sext(dst, cpu_R[rd], size);
1234 } else {
1235 t_gen_zext(dst, cpu_R[rd], size);
1236 }
1237 }
1238
1239 static int dec_prep_move_m(CPUCRISState *env, DisasContext *dc,
1240 int s_ext, int memsize, TCGv dst)
1241 {
1242 unsigned int rs;
1243 uint32_t imm;
1244 int is_imm;
1245 int insn_len = 2;
1246
1247 rs = dc->op1;
1248 is_imm = rs == 15 && dc->postinc;
1249
1250 /* Load [$rs] onto T1. */
1251 if (is_imm) {
1252 insn_len = 2 + memsize;
1253 if (memsize == 1) {
1254 insn_len++;
1255 }
1256
1257 imm = cris_fetch(env, dc, dc->pc + 2, memsize, s_ext);
1258 tcg_gen_movi_tl(dst, imm);
1259 dc->postinc = 0;
1260 } else {
1261 cris_flush_cc_state(dc);
1262 gen_load(dc, dst, cpu_R[rs], memsize, 0);
1263 if (s_ext) {
1264 t_gen_sext(dst, dst, memsize);
1265 } else {
1266 t_gen_zext(dst, dst, memsize);
1267 }
1268 }
1269 return insn_len;
1270 }
1271
1272 /* Prepare T0 and T1 for a memory + alu operation.
1273 s_ext decides if the operand1 should be sign-extended or zero-extended when
1274 needed. */
1275 static int dec_prep_alu_m(CPUCRISState *env, DisasContext *dc,
1276 int s_ext, int memsize, TCGv dst, TCGv src)
1277 {
1278 int insn_len;
1279
1280 insn_len = dec_prep_move_m(env, dc, s_ext, memsize, src);
1281 tcg_gen_mov_tl(dst, cpu_R[dc->op2]);
1282 return insn_len;
1283 }
1284
1285 #if DISAS_CRIS
1286 static const char *cc_name(int cc)
1287 {
1288 static const char *cc_names[16] = {
1289 "cc", "cs", "ne", "eq", "vc", "vs", "pl", "mi",
1290 "ls", "hi", "ge", "lt", "gt", "le", "a", "p"
1291 };
1292 assert(cc < 16);
1293 return cc_names[cc];
1294 }
1295 #endif
1296
1297 /* Start of insn decoders. */
1298
1299 static int dec_bccq(CPUCRISState *env, DisasContext *dc)
1300 {
1301 int32_t offset;
1302 int sign;
1303 uint32_t cond = dc->op2;
1304
1305 offset = EXTRACT_FIELD(dc->ir, 1, 7);
1306 sign = EXTRACT_FIELD(dc->ir, 0, 0);
1307
1308 offset *= 2;
1309 offset |= sign << 8;
1310 offset = sign_extend(offset, 8);
1311
1312 LOG_DIS("b%s %x\n", cc_name(cond), dc->pc + offset);
1313
1314 /* op2 holds the condition-code. */
1315 cris_cc_mask(dc, 0);
1316 cris_prepare_cc_branch(dc, offset, cond);
1317 return 2;
1318 }
1319 static int dec_addoq(CPUCRISState *env, DisasContext *dc)
1320 {
1321 int32_t imm;
1322
1323 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 7);
1324 imm = sign_extend(dc->op1, 7);
1325
1326 LOG_DIS("addoq %d, $r%u\n", imm, dc->op2);
1327 cris_cc_mask(dc, 0);
1328 /* Fetch register operand, */
1329 tcg_gen_addi_tl(cpu_R[R_ACR], cpu_R[dc->op2], imm);
1330
1331 return 2;
1332 }
1333 static int dec_addq(CPUCRISState *env, DisasContext *dc)
1334 {
1335 LOG_DIS("addq %u, $r%u\n", dc->op1, dc->op2);
1336
1337 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1338
1339 cris_cc_mask(dc, CC_MASK_NZVC);
1340
1341 cris_alu(dc, CC_OP_ADD,
1342 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
1343 return 2;
1344 }
1345 static int dec_moveq(CPUCRISState *env, DisasContext *dc)
1346 {
1347 uint32_t imm;
1348
1349 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1350 imm = sign_extend(dc->op1, 5);
1351 LOG_DIS("moveq %d, $r%u\n", imm, dc->op2);
1352
1353 tcg_gen_movi_tl(cpu_R[dc->op2], imm);
1354 return 2;
1355 }
1356 static int dec_subq(CPUCRISState *env, DisasContext *dc)
1357 {
1358 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1359
1360 LOG_DIS("subq %u, $r%u\n", dc->op1, dc->op2);
1361
1362 cris_cc_mask(dc, CC_MASK_NZVC);
1363 cris_alu(dc, CC_OP_SUB,
1364 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
1365 return 2;
1366 }
1367 static int dec_cmpq(CPUCRISState *env, DisasContext *dc)
1368 {
1369 uint32_t imm;
1370 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1371 imm = sign_extend(dc->op1, 5);
1372
1373 LOG_DIS("cmpq %d, $r%d\n", imm, dc->op2);
1374 cris_cc_mask(dc, CC_MASK_NZVC);
1375
1376 cris_alu(dc, CC_OP_CMP,
1377 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
1378 return 2;
1379 }
1380 static int dec_andq(CPUCRISState *env, DisasContext *dc)
1381 {
1382 uint32_t imm;
1383 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1384 imm = sign_extend(dc->op1, 5);
1385
1386 LOG_DIS("andq %d, $r%d\n", imm, dc->op2);
1387 cris_cc_mask(dc, CC_MASK_NZ);
1388
1389 cris_alu(dc, CC_OP_AND,
1390 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
1391 return 2;
1392 }
1393 static int dec_orq(CPUCRISState *env, DisasContext *dc)
1394 {
1395 uint32_t imm;
1396 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1397 imm = sign_extend(dc->op1, 5);
1398 LOG_DIS("orq %d, $r%d\n", imm, dc->op2);
1399 cris_cc_mask(dc, CC_MASK_NZ);
1400
1401 cris_alu(dc, CC_OP_OR,
1402 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
1403 return 2;
1404 }
1405 static int dec_btstq(CPUCRISState *env, DisasContext *dc)
1406 {
1407 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1408 LOG_DIS("btstq %u, $r%d\n", dc->op1, dc->op2);
1409
1410 cris_cc_mask(dc, CC_MASK_NZ);
1411 cris_evaluate_flags(dc);
1412 gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->op2],
1413 tcg_const_tl(dc->op1), cpu_PR[PR_CCS]);
1414 cris_alu(dc, CC_OP_MOVE,
1415 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op2], 4);
1416 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
1417 dc->flags_uptodate = 1;
1418 return 2;
1419 }
1420 static int dec_asrq(CPUCRISState *env, DisasContext *dc)
1421 {
1422 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1423 LOG_DIS("asrq %u, $r%d\n", dc->op1, dc->op2);
1424 cris_cc_mask(dc, CC_MASK_NZ);
1425
1426 tcg_gen_sari_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1);
1427 cris_alu(dc, CC_OP_MOVE,
1428 cpu_R[dc->op2],
1429 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1430 return 2;
1431 }
1432 static int dec_lslq(CPUCRISState *env, DisasContext *dc)
1433 {
1434 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1435 LOG_DIS("lslq %u, $r%d\n", dc->op1, dc->op2);
1436
1437 cris_cc_mask(dc, CC_MASK_NZ);
1438
1439 tcg_gen_shli_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1);
1440
1441 cris_alu(dc, CC_OP_MOVE,
1442 cpu_R[dc->op2],
1443 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1444 return 2;
1445 }
1446 static int dec_lsrq(CPUCRISState *env, DisasContext *dc)
1447 {
1448 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1449 LOG_DIS("lsrq %u, $r%d\n", dc->op1, dc->op2);
1450
1451 cris_cc_mask(dc, CC_MASK_NZ);
1452
1453 tcg_gen_shri_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
1460 static int dec_move_r(CPUCRISState *env, DisasContext *dc)
1461 {
1462 int size = memsize_zz(dc);
1463
1464 LOG_DIS("move.%c $r%u, $r%u\n",
1465 memsize_char(size), dc->op1, dc->op2);
1466
1467 cris_cc_mask(dc, CC_MASK_NZ);
1468 if (size == 4) {
1469 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, cpu_R[dc->op2]);
1470 cris_cc_mask(dc, CC_MASK_NZ);
1471 cris_update_cc_op(dc, CC_OP_MOVE, 4);
1472 cris_update_cc_x(dc);
1473 cris_update_result(dc, cpu_R[dc->op2]);
1474 } else {
1475 TCGv t0;
1476
1477 t0 = tcg_temp_new();
1478 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0);
1479 cris_alu(dc, CC_OP_MOVE,
1480 cpu_R[dc->op2],
1481 cpu_R[dc->op2], t0, size);
1482 tcg_temp_free(t0);
1483 }
1484 return 2;
1485 }
1486
1487 static int dec_scc_r(CPUCRISState *env, DisasContext *dc)
1488 {
1489 int cond = dc->op2;
1490
1491 LOG_DIS("s%s $r%u\n",
1492 cc_name(cond), dc->op1);
1493
1494 if (cond != CC_A) {
1495 int l1;
1496
1497 gen_tst_cc(dc, cpu_R[dc->op1], cond);
1498 l1 = gen_new_label();
1499 tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_R[dc->op1], 0, l1);
1500 tcg_gen_movi_tl(cpu_R[dc->op1], 1);
1501 gen_set_label(l1);
1502 } else {
1503 tcg_gen_movi_tl(cpu_R[dc->op1], 1);
1504 }
1505
1506 cris_cc_mask(dc, 0);
1507 return 2;
1508 }
1509
1510 static inline void cris_alu_alloc_temps(DisasContext *dc, int size, TCGv *t)
1511 {
1512 if (size == 4) {
1513 t[0] = cpu_R[dc->op2];
1514 t[1] = cpu_R[dc->op1];
1515 } else {
1516 t[0] = tcg_temp_new();
1517 t[1] = tcg_temp_new();
1518 }
1519 }
1520
1521 static inline void cris_alu_free_temps(DisasContext *dc, int size, TCGv *t)
1522 {
1523 if (size != 4) {
1524 tcg_temp_free(t[0]);
1525 tcg_temp_free(t[1]);
1526 }
1527 }
1528
1529 static int dec_and_r(CPUCRISState *env, DisasContext *dc)
1530 {
1531 TCGv t[2];
1532 int size = memsize_zz(dc);
1533
1534 LOG_DIS("and.%c $r%u, $r%u\n",
1535 memsize_char(size), dc->op1, dc->op2);
1536
1537 cris_cc_mask(dc, CC_MASK_NZ);
1538
1539 cris_alu_alloc_temps(dc, size, t);
1540 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1541 cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], size);
1542 cris_alu_free_temps(dc, size, t);
1543 return 2;
1544 }
1545
1546 static int dec_lz_r(CPUCRISState *env, DisasContext *dc)
1547 {
1548 TCGv t0;
1549 LOG_DIS("lz $r%u, $r%u\n",
1550 dc->op1, dc->op2);
1551 cris_cc_mask(dc, CC_MASK_NZ);
1552 t0 = tcg_temp_new();
1553 dec_prep_alu_r(dc, dc->op1, dc->op2, 4, 0, cpu_R[dc->op2], t0);
1554 cris_alu(dc, CC_OP_LZ, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1555 tcg_temp_free(t0);
1556 return 2;
1557 }
1558
1559 static int dec_lsl_r(CPUCRISState *env, DisasContext *dc)
1560 {
1561 TCGv t[2];
1562 int size = memsize_zz(dc);
1563
1564 LOG_DIS("lsl.%c $r%u, $r%u\n",
1565 memsize_char(size), dc->op1, dc->op2);
1566
1567 cris_cc_mask(dc, CC_MASK_NZ);
1568 cris_alu_alloc_temps(dc, size, t);
1569 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1570 tcg_gen_andi_tl(t[1], t[1], 63);
1571 cris_alu(dc, CC_OP_LSL, cpu_R[dc->op2], t[0], t[1], size);
1572 cris_alu_alloc_temps(dc, size, t);
1573 return 2;
1574 }
1575
1576 static int dec_lsr_r(CPUCRISState *env, DisasContext *dc)
1577 {
1578 TCGv t[2];
1579 int size = memsize_zz(dc);
1580
1581 LOG_DIS("lsr.%c $r%u, $r%u\n",
1582 memsize_char(size), dc->op1, dc->op2);
1583
1584 cris_cc_mask(dc, CC_MASK_NZ);
1585 cris_alu_alloc_temps(dc, size, t);
1586 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1587 tcg_gen_andi_tl(t[1], t[1], 63);
1588 cris_alu(dc, CC_OP_LSR, cpu_R[dc->op2], t[0], t[1], size);
1589 cris_alu_free_temps(dc, size, t);
1590 return 2;
1591 }
1592
1593 static int dec_asr_r(CPUCRISState *env, DisasContext *dc)
1594 {
1595 TCGv t[2];
1596 int size = memsize_zz(dc);
1597
1598 LOG_DIS("asr.%c $r%u, $r%u\n",
1599 memsize_char(size), dc->op1, dc->op2);
1600
1601 cris_cc_mask(dc, CC_MASK_NZ);
1602 cris_alu_alloc_temps(dc, size, t);
1603 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]);
1604 tcg_gen_andi_tl(t[1], t[1], 63);
1605 cris_alu(dc, CC_OP_ASR, cpu_R[dc->op2], t[0], t[1], size);
1606 cris_alu_free_temps(dc, size, t);
1607 return 2;
1608 }
1609
1610 static int dec_muls_r(CPUCRISState *env, DisasContext *dc)
1611 {
1612 TCGv t[2];
1613 int size = memsize_zz(dc);
1614
1615 LOG_DIS("muls.%c $r%u, $r%u\n",
1616 memsize_char(size), dc->op1, dc->op2);
1617 cris_cc_mask(dc, CC_MASK_NZV);
1618 cris_alu_alloc_temps(dc, size, t);
1619 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]);
1620
1621 cris_alu(dc, CC_OP_MULS, cpu_R[dc->op2], t[0], t[1], 4);
1622 cris_alu_free_temps(dc, size, t);
1623 return 2;
1624 }
1625
1626 static int dec_mulu_r(CPUCRISState *env, DisasContext *dc)
1627 {
1628 TCGv t[2];
1629 int size = memsize_zz(dc);
1630
1631 LOG_DIS("mulu.%c $r%u, $r%u\n",
1632 memsize_char(size), dc->op1, dc->op2);
1633 cris_cc_mask(dc, CC_MASK_NZV);
1634 cris_alu_alloc_temps(dc, size, t);
1635 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1636
1637 cris_alu(dc, CC_OP_MULU, cpu_R[dc->op2], t[0], t[1], 4);
1638 cris_alu_alloc_temps(dc, size, t);
1639 return 2;
1640 }
1641
1642
1643 static int dec_dstep_r(CPUCRISState *env, DisasContext *dc)
1644 {
1645 LOG_DIS("dstep $r%u, $r%u\n", dc->op1, dc->op2);
1646 cris_cc_mask(dc, CC_MASK_NZ);
1647 cris_alu(dc, CC_OP_DSTEP,
1648 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4);
1649 return 2;
1650 }
1651
1652 static int dec_xor_r(CPUCRISState *env, DisasContext *dc)
1653 {
1654 TCGv t[2];
1655 int size = memsize_zz(dc);
1656 LOG_DIS("xor.%c $r%u, $r%u\n",
1657 memsize_char(size), dc->op1, dc->op2);
1658 BUG_ON(size != 4); /* xor is dword. */
1659 cris_cc_mask(dc, CC_MASK_NZ);
1660 cris_alu_alloc_temps(dc, size, t);
1661 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1662
1663 cris_alu(dc, CC_OP_XOR, cpu_R[dc->op2], t[0], t[1], 4);
1664 cris_alu_free_temps(dc, size, t);
1665 return 2;
1666 }
1667
1668 static int dec_bound_r(CPUCRISState *env, DisasContext *dc)
1669 {
1670 TCGv l0;
1671 int size = memsize_zz(dc);
1672 LOG_DIS("bound.%c $r%u, $r%u\n",
1673 memsize_char(size), dc->op1, dc->op2);
1674 cris_cc_mask(dc, CC_MASK_NZ);
1675 l0 = tcg_temp_local_new();
1676 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, l0);
1677 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], cpu_R[dc->op2], l0, 4);
1678 tcg_temp_free(l0);
1679 return 2;
1680 }
1681
1682 static int dec_cmp_r(CPUCRISState *env, DisasContext *dc)
1683 {
1684 TCGv t[2];
1685 int size = memsize_zz(dc);
1686 LOG_DIS("cmp.%c $r%u, $r%u\n",
1687 memsize_char(size), dc->op1, dc->op2);
1688 cris_cc_mask(dc, CC_MASK_NZVC);
1689 cris_alu_alloc_temps(dc, size, t);
1690 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1691
1692 cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], t[0], t[1], size);
1693 cris_alu_free_temps(dc, size, t);
1694 return 2;
1695 }
1696
1697 static int dec_abs_r(CPUCRISState *env, DisasContext *dc)
1698 {
1699 TCGv t0;
1700
1701 LOG_DIS("abs $r%u, $r%u\n",
1702 dc->op1, dc->op2);
1703 cris_cc_mask(dc, CC_MASK_NZ);
1704
1705 t0 = tcg_temp_new();
1706 tcg_gen_sari_tl(t0, cpu_R[dc->op1], 31);
1707 tcg_gen_xor_tl(cpu_R[dc->op2], cpu_R[dc->op1], t0);
1708 tcg_gen_sub_tl(cpu_R[dc->op2], cpu_R[dc->op2], t0);
1709 tcg_temp_free(t0);
1710
1711 cris_alu(dc, CC_OP_MOVE,
1712 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op2], 4);
1713 return 2;
1714 }
1715
1716 static int dec_add_r(CPUCRISState *env, DisasContext *dc)
1717 {
1718 TCGv t[2];
1719 int size = memsize_zz(dc);
1720 LOG_DIS("add.%c $r%u, $r%u\n",
1721 memsize_char(size), dc->op1, dc->op2);
1722 cris_cc_mask(dc, CC_MASK_NZVC);
1723 cris_alu_alloc_temps(dc, size, t);
1724 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1725
1726 cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], t[0], t[1], size);
1727 cris_alu_free_temps(dc, size, t);
1728 return 2;
1729 }
1730
1731 static int dec_addc_r(CPUCRISState *env, DisasContext *dc)
1732 {
1733 LOG_DIS("addc $r%u, $r%u\n",
1734 dc->op1, dc->op2);
1735 cris_evaluate_flags(dc);
1736 /* Set for this insn. */
1737 dc->flagx_known = 1;
1738 dc->flags_x = X_FLAG;
1739
1740 cris_cc_mask(dc, CC_MASK_NZVC);
1741 cris_alu(dc, CC_OP_ADDC,
1742 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4);
1743 return 2;
1744 }
1745
1746 static int dec_mcp_r(CPUCRISState *env, DisasContext *dc)
1747 {
1748 LOG_DIS("mcp $p%u, $r%u\n",
1749 dc->op2, dc->op1);
1750 cris_evaluate_flags(dc);
1751 cris_cc_mask(dc, CC_MASK_RNZV);
1752 cris_alu(dc, CC_OP_MCP,
1753 cpu_R[dc->op1], cpu_R[dc->op1], cpu_PR[dc->op2], 4);
1754 return 2;
1755 }
1756
1757 #if DISAS_CRIS
1758 static char * swapmode_name(int mode, char *modename) {
1759 int i = 0;
1760 if (mode & 8) {
1761 modename[i++] = 'n';
1762 }
1763 if (mode & 4) {
1764 modename[i++] = 'w';
1765 }
1766 if (mode & 2) {
1767 modename[i++] = 'b';
1768 }
1769 if (mode & 1) {
1770 modename[i++] = 'r';
1771 }
1772 modename[i++] = 0;
1773 return modename;
1774 }
1775 #endif
1776
1777 static int dec_swap_r(CPUCRISState *env, DisasContext *dc)
1778 {
1779 TCGv t0;
1780 #if DISAS_CRIS
1781 char modename[4];
1782 #endif
1783 LOG_DIS("swap%s $r%u\n",
1784 swapmode_name(dc->op2, modename), dc->op1);
1785
1786 cris_cc_mask(dc, CC_MASK_NZ);
1787 t0 = tcg_temp_new();
1788 tcg_gen_mov_tl(t0, cpu_R[dc->op1]);
1789 if (dc->op2 & 8) {
1790 tcg_gen_not_tl(t0, t0);
1791 }
1792 if (dc->op2 & 4) {
1793 t_gen_swapw(t0, t0);
1794 }
1795 if (dc->op2 & 2) {
1796 t_gen_swapb(t0, t0);
1797 }
1798 if (dc->op2 & 1) {
1799 t_gen_swapr(t0, t0);
1800 }
1801 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op1], cpu_R[dc->op1], t0, 4);
1802 tcg_temp_free(t0);
1803 return 2;
1804 }
1805
1806 static int dec_or_r(CPUCRISState *env, DisasContext *dc)
1807 {
1808 TCGv t[2];
1809 int size = memsize_zz(dc);
1810 LOG_DIS("or.%c $r%u, $r%u\n",
1811 memsize_char(size), dc->op1, dc->op2);
1812 cris_cc_mask(dc, CC_MASK_NZ);
1813 cris_alu_alloc_temps(dc, size, t);
1814 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1815 cris_alu(dc, CC_OP_OR, cpu_R[dc->op2], t[0], t[1], size);
1816 cris_alu_free_temps(dc, size, t);
1817 return 2;
1818 }
1819
1820 static int dec_addi_r(CPUCRISState *env, DisasContext *dc)
1821 {
1822 TCGv t0;
1823 LOG_DIS("addi.%c $r%u, $r%u\n",
1824 memsize_char(memsize_zz(dc)), dc->op2, dc->op1);
1825 cris_cc_mask(dc, 0);
1826 t0 = tcg_temp_new();
1827 tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize));
1828 tcg_gen_add_tl(cpu_R[dc->op1], cpu_R[dc->op1], t0);
1829 tcg_temp_free(t0);
1830 return 2;
1831 }
1832
1833 static int dec_addi_acr(CPUCRISState *env, DisasContext *dc)
1834 {
1835 TCGv t0;
1836 LOG_DIS("addi.%c $r%u, $r%u, $acr\n",
1837 memsize_char(memsize_zz(dc)), dc->op2, dc->op1);
1838 cris_cc_mask(dc, 0);
1839 t0 = tcg_temp_new();
1840 tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize));
1841 tcg_gen_add_tl(cpu_R[R_ACR], cpu_R[dc->op1], t0);
1842 tcg_temp_free(t0);
1843 return 2;
1844 }
1845
1846 static int dec_neg_r(CPUCRISState *env, DisasContext *dc)
1847 {
1848 TCGv t[2];
1849 int size = memsize_zz(dc);
1850 LOG_DIS("neg.%c $r%u, $r%u\n",
1851 memsize_char(size), dc->op1, dc->op2);
1852 cris_cc_mask(dc, CC_MASK_NZVC);
1853 cris_alu_alloc_temps(dc, size, t);
1854 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1855
1856 cris_alu(dc, CC_OP_NEG, cpu_R[dc->op2], t[0], t[1], size);
1857 cris_alu_free_temps(dc, size, t);
1858 return 2;
1859 }
1860
1861 static int dec_btst_r(CPUCRISState *env, DisasContext *dc)
1862 {
1863 LOG_DIS("btst $r%u, $r%u\n",
1864 dc->op1, dc->op2);
1865 cris_cc_mask(dc, CC_MASK_NZ);
1866 cris_evaluate_flags(dc);
1867 gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->op2],
1868 cpu_R[dc->op1], cpu_PR[PR_CCS]);
1869 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2],
1870 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1871 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
1872 dc->flags_uptodate = 1;
1873 return 2;
1874 }
1875
1876 static int dec_sub_r(CPUCRISState *env, DisasContext *dc)
1877 {
1878 TCGv t[2];
1879 int size = memsize_zz(dc);
1880 LOG_DIS("sub.%c $r%u, $r%u\n",
1881 memsize_char(size), dc->op1, dc->op2);
1882 cris_cc_mask(dc, CC_MASK_NZVC);
1883 cris_alu_alloc_temps(dc, size, t);
1884 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1885 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], size);
1886 cris_alu_free_temps(dc, size, t);
1887 return 2;
1888 }
1889
1890 /* Zero extension. From size to dword. */
1891 static int dec_movu_r(CPUCRISState *env, DisasContext *dc)
1892 {
1893 TCGv t0;
1894 int size = memsize_z(dc);
1895 LOG_DIS("movu.%c $r%u, $r%u\n",
1896 memsize_char(size),
1897 dc->op1, dc->op2);
1898
1899 cris_cc_mask(dc, CC_MASK_NZ);
1900 t0 = tcg_temp_new();
1901 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0);
1902 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1903 tcg_temp_free(t0);
1904 return 2;
1905 }
1906
1907 /* Sign extension. From size to dword. */
1908 static int dec_movs_r(CPUCRISState *env, DisasContext *dc)
1909 {
1910 TCGv t0;
1911 int size = memsize_z(dc);
1912 LOG_DIS("movs.%c $r%u, $r%u\n",
1913 memsize_char(size),
1914 dc->op1, dc->op2);
1915
1916 cris_cc_mask(dc, CC_MASK_NZ);
1917 t0 = tcg_temp_new();
1918 /* Size can only be qi or hi. */
1919 t_gen_sext(t0, cpu_R[dc->op1], size);
1920 cris_alu(dc, CC_OP_MOVE,
1921 cpu_R[dc->op2], cpu_R[dc->op1], t0, 4);
1922 tcg_temp_free(t0);
1923 return 2;
1924 }
1925
1926 /* zero extension. From size to dword. */
1927 static int dec_addu_r(CPUCRISState *env, DisasContext *dc)
1928 {
1929 TCGv t0;
1930 int size = memsize_z(dc);
1931 LOG_DIS("addu.%c $r%u, $r%u\n",
1932 memsize_char(size),
1933 dc->op1, dc->op2);
1934
1935 cris_cc_mask(dc, CC_MASK_NZVC);
1936 t0 = tcg_temp_new();
1937 /* Size can only be qi or hi. */
1938 t_gen_zext(t0, cpu_R[dc->op1], size);
1939 cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1940 tcg_temp_free(t0);
1941 return 2;
1942 }
1943
1944 /* Sign extension. From size to dword. */
1945 static int dec_adds_r(CPUCRISState *env, DisasContext *dc)
1946 {
1947 TCGv t0;
1948 int size = memsize_z(dc);
1949 LOG_DIS("adds.%c $r%u, $r%u\n",
1950 memsize_char(size),
1951 dc->op1, dc->op2);
1952
1953 cris_cc_mask(dc, CC_MASK_NZVC);
1954 t0 = tcg_temp_new();
1955 /* Size can only be qi or hi. */
1956 t_gen_sext(t0, cpu_R[dc->op1], size);
1957 cris_alu(dc, CC_OP_ADD,
1958 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1959 tcg_temp_free(t0);
1960 return 2;
1961 }
1962
1963 /* Zero extension. From size to dword. */
1964 static int dec_subu_r(CPUCRISState *env, DisasContext *dc)
1965 {
1966 TCGv t0;
1967 int size = memsize_z(dc);
1968 LOG_DIS("subu.%c $r%u, $r%u\n",
1969 memsize_char(size),
1970 dc->op1, dc->op2);
1971
1972 cris_cc_mask(dc, CC_MASK_NZVC);
1973 t0 = tcg_temp_new();
1974 /* Size can only be qi or hi. */
1975 t_gen_zext(t0, cpu_R[dc->op1], size);
1976 cris_alu(dc, CC_OP_SUB,
1977 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1978 tcg_temp_free(t0);
1979 return 2;
1980 }
1981
1982 /* Sign extension. From size to dword. */
1983 static int dec_subs_r(CPUCRISState *env, DisasContext *dc)
1984 {
1985 TCGv t0;
1986 int size = memsize_z(dc);
1987 LOG_DIS("subs.%c $r%u, $r%u\n",
1988 memsize_char(size),
1989 dc->op1, dc->op2);
1990
1991 cris_cc_mask(dc, CC_MASK_NZVC);
1992 t0 = tcg_temp_new();
1993 /* Size can only be qi or hi. */
1994 t_gen_sext(t0, cpu_R[dc->op1], size);
1995 cris_alu(dc, CC_OP_SUB,
1996 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1997 tcg_temp_free(t0);
1998 return 2;
1999 }
2000
2001 static int dec_setclrf(CPUCRISState *env, DisasContext *dc)
2002 {
2003 uint32_t flags;
2004 int set = (~dc->opcode >> 2) & 1;
2005
2006
2007 flags = (EXTRACT_FIELD(dc->ir, 12, 15) << 4)
2008 | EXTRACT_FIELD(dc->ir, 0, 3);
2009 if (set && flags == 0) {
2010 LOG_DIS("nop\n");
2011 return 2;
2012 } else if (!set && (flags & 0x20)) {
2013 LOG_DIS("di\n");
2014 } else {
2015 LOG_DIS("%sf %x\n", set ? "set" : "clr", flags);
2016 }
2017
2018 /* User space is not allowed to touch these. Silently ignore. */
2019 if (dc->tb_flags & U_FLAG) {
2020 flags &= ~(S_FLAG | I_FLAG | U_FLAG);
2021 }
2022
2023 if (flags & X_FLAG) {
2024 dc->flagx_known = 1;
2025 if (set) {
2026 dc->flags_x = X_FLAG;
2027 } else {
2028 dc->flags_x = 0;
2029 }
2030 }
2031
2032 /* Break the TB if any of the SPI flag changes. */
2033 if (flags & (P_FLAG | S_FLAG)) {
2034 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2035 dc->is_jmp = DISAS_UPDATE;
2036 dc->cpustate_changed = 1;
2037 }
2038
2039 /* For the I flag, only act on posedge. */
2040 if ((flags & I_FLAG)) {
2041 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2042 dc->is_jmp = DISAS_UPDATE;
2043 dc->cpustate_changed = 1;
2044 }
2045
2046
2047 /* Simply decode the flags. */
2048 cris_evaluate_flags(dc);
2049 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
2050 cris_update_cc_x(dc);
2051 tcg_gen_movi_tl(cc_op, dc->cc_op);
2052
2053 if (set) {
2054 if (!(dc->tb_flags & U_FLAG) && (flags & U_FLAG)) {
2055 /* Enter user mode. */
2056 t_gen_mov_env_TN(ksp, cpu_R[R_SP]);
2057 tcg_gen_mov_tl(cpu_R[R_SP], cpu_PR[PR_USP]);
2058 dc->cpustate_changed = 1;
2059 }
2060 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags);
2061 } else {
2062 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~flags);
2063 }
2064
2065 dc->flags_uptodate = 1;
2066 dc->clear_x = 0;
2067 return 2;
2068 }
2069
2070 static int dec_move_rs(CPUCRISState *env, DisasContext *dc)
2071 {
2072 LOG_DIS("move $r%u, $s%u\n", dc->op1, dc->op2);
2073 cris_cc_mask(dc, 0);
2074 gen_helper_movl_sreg_reg(cpu_env, tcg_const_tl(dc->op2),
2075 tcg_const_tl(dc->op1));
2076 return 2;
2077 }
2078 static int dec_move_sr(CPUCRISState *env, DisasContext *dc)
2079 {
2080 LOG_DIS("move $s%u, $r%u\n", dc->op2, dc->op1);
2081 cris_cc_mask(dc, 0);
2082 gen_helper_movl_reg_sreg(cpu_env, tcg_const_tl(dc->op1),
2083 tcg_const_tl(dc->op2));
2084 return 2;
2085 }
2086
2087 static int dec_move_rp(CPUCRISState *env, DisasContext *dc)
2088 {
2089 TCGv t[2];
2090 LOG_DIS("move $r%u, $p%u\n", dc->op1, dc->op2);
2091 cris_cc_mask(dc, 0);
2092
2093 t[0] = tcg_temp_new();
2094 if (dc->op2 == PR_CCS) {
2095 cris_evaluate_flags(dc);
2096 tcg_gen_mov_tl(t[0], cpu_R[dc->op1]);
2097 if (dc->tb_flags & U_FLAG) {
2098 t[1] = tcg_temp_new();
2099 /* User space is not allowed to touch all flags. */
2100 tcg_gen_andi_tl(t[0], t[0], 0x39f);
2101 tcg_gen_andi_tl(t[1], cpu_PR[PR_CCS], ~0x39f);
2102 tcg_gen_or_tl(t[0], t[1], t[0]);
2103 tcg_temp_free(t[1]);
2104 }
2105 } else {
2106 tcg_gen_mov_tl(t[0], cpu_R[dc->op1]);
2107 }
2108
2109 t_gen_mov_preg_TN(dc, dc->op2, t[0]);
2110 if (dc->op2 == PR_CCS) {
2111 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
2112 dc->flags_uptodate = 1;
2113 }
2114 tcg_temp_free(t[0]);
2115 return 2;
2116 }
2117 static int dec_move_pr(CPUCRISState *env, DisasContext *dc)
2118 {
2119 TCGv t0;
2120 LOG_DIS("move $p%u, $r%u\n", dc->op2, dc->op1);
2121 cris_cc_mask(dc, 0);
2122
2123 if (dc->op2 == PR_CCS) {
2124 cris_evaluate_flags(dc);
2125 }
2126
2127 if (dc->op2 == PR_DZ) {
2128 tcg_gen_movi_tl(cpu_R[dc->op1], 0);
2129 } else {
2130 t0 = tcg_temp_new();
2131 t_gen_mov_TN_preg(t0, dc->op2);
2132 cris_alu(dc, CC_OP_MOVE,
2133 cpu_R[dc->op1], cpu_R[dc->op1], t0,
2134 preg_sizes[dc->op2]);
2135 tcg_temp_free(t0);
2136 }
2137 return 2;
2138 }
2139
2140 static int dec_move_mr(CPUCRISState *env, DisasContext *dc)
2141 {
2142 int memsize = memsize_zz(dc);
2143 int insn_len;
2144 LOG_DIS("move.%c [$r%u%s, $r%u\n",
2145 memsize_char(memsize),
2146 dc->op1, dc->postinc ? "+]" : "]",
2147 dc->op2);
2148
2149 if (memsize == 4) {
2150 insn_len = dec_prep_move_m(env, dc, 0, 4, cpu_R[dc->op2]);
2151 cris_cc_mask(dc, CC_MASK_NZ);
2152 cris_update_cc_op(dc, CC_OP_MOVE, 4);
2153 cris_update_cc_x(dc);
2154 cris_update_result(dc, cpu_R[dc->op2]);
2155 } else {
2156 TCGv t0;
2157
2158 t0 = tcg_temp_new();
2159 insn_len = dec_prep_move_m(env, dc, 0, memsize, t0);
2160 cris_cc_mask(dc, CC_MASK_NZ);
2161 cris_alu(dc, CC_OP_MOVE,
2162 cpu_R[dc->op2], cpu_R[dc->op2], t0, memsize);
2163 tcg_temp_free(t0);
2164 }
2165 do_postinc(dc, memsize);
2166 return insn_len;
2167 }
2168
2169 static inline void cris_alu_m_alloc_temps(TCGv *t)
2170 {
2171 t[0] = tcg_temp_new();
2172 t[1] = tcg_temp_new();
2173 }
2174
2175 static inline void cris_alu_m_free_temps(TCGv *t)
2176 {
2177 tcg_temp_free(t[0]);
2178 tcg_temp_free(t[1]);
2179 }
2180
2181 static int dec_movs_m(CPUCRISState *env, DisasContext *dc)
2182 {
2183 TCGv t[2];
2184 int memsize = memsize_z(dc);
2185 int insn_len;
2186 LOG_DIS("movs.%c [$r%u%s, $r%u\n",
2187 memsize_char(memsize),
2188 dc->op1, dc->postinc ? "+]" : "]",
2189 dc->op2);
2190
2191 cris_alu_m_alloc_temps(t);
2192 /* sign extend. */
2193 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2194 cris_cc_mask(dc, CC_MASK_NZ);
2195 cris_alu(dc, CC_OP_MOVE,
2196 cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2197 do_postinc(dc, memsize);
2198 cris_alu_m_free_temps(t);
2199 return insn_len;
2200 }
2201
2202 static int dec_addu_m(CPUCRISState *env, DisasContext *dc)
2203 {
2204 TCGv t[2];
2205 int memsize = memsize_z(dc);
2206 int insn_len;
2207 LOG_DIS("addu.%c [$r%u%s, $r%u\n",
2208 memsize_char(memsize),
2209 dc->op1, dc->postinc ? "+]" : "]",
2210 dc->op2);
2211
2212 cris_alu_m_alloc_temps(t);
2213 /* sign extend. */
2214 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2215 cris_cc_mask(dc, CC_MASK_NZVC);
2216 cris_alu(dc, CC_OP_ADD,
2217 cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2218 do_postinc(dc, memsize);
2219 cris_alu_m_free_temps(t);
2220 return insn_len;
2221 }
2222
2223 static int dec_adds_m(CPUCRISState *env, DisasContext *dc)
2224 {
2225 TCGv t[2];
2226 int memsize = memsize_z(dc);
2227 int insn_len;
2228 LOG_DIS("adds.%c [$r%u%s, $r%u\n",
2229 memsize_char(memsize),
2230 dc->op1, dc->postinc ? "+]" : "]",
2231 dc->op2);
2232
2233 cris_alu_m_alloc_temps(t);
2234 /* sign extend. */
2235 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2236 cris_cc_mask(dc, CC_MASK_NZVC);
2237 cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2238 do_postinc(dc, memsize);
2239 cris_alu_m_free_temps(t);
2240 return insn_len;
2241 }
2242
2243 static int dec_subu_m(CPUCRISState *env, DisasContext *dc)
2244 {
2245 TCGv t[2];
2246 int memsize = memsize_z(dc);
2247 int insn_len;
2248 LOG_DIS("subu.%c [$r%u%s, $r%u\n",
2249 memsize_char(memsize),
2250 dc->op1, dc->postinc ? "+]" : "]",
2251 dc->op2);
2252
2253 cris_alu_m_alloc_temps(t);
2254 /* sign extend. */
2255 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2256 cris_cc_mask(dc, CC_MASK_NZVC);
2257 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2258 do_postinc(dc, memsize);
2259 cris_alu_m_free_temps(t);
2260 return insn_len;
2261 }
2262
2263 static int dec_subs_m(CPUCRISState *env, DisasContext *dc)
2264 {
2265 TCGv t[2];
2266 int memsize = memsize_z(dc);
2267 int insn_len;
2268 LOG_DIS("subs.%c [$r%u%s, $r%u\n",
2269 memsize_char(memsize),
2270 dc->op1, dc->postinc ? "+]" : "]",
2271 dc->op2);
2272
2273 cris_alu_m_alloc_temps(t);
2274 /* sign extend. */
2275 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2276 cris_cc_mask(dc, CC_MASK_NZVC);
2277 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2278 do_postinc(dc, memsize);
2279 cris_alu_m_free_temps(t);
2280 return insn_len;
2281 }
2282
2283 static int dec_movu_m(CPUCRISState *env, DisasContext *dc)
2284 {
2285 TCGv t[2];
2286 int memsize = memsize_z(dc);
2287 int insn_len;
2288
2289 LOG_DIS("movu.%c [$r%u%s, $r%u\n",
2290 memsize_char(memsize),
2291 dc->op1, dc->postinc ? "+]" : "]",
2292 dc->op2);
2293
2294 cris_alu_m_alloc_temps(t);
2295 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2296 cris_cc_mask(dc, CC_MASK_NZ);
2297 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2298 do_postinc(dc, memsize);
2299 cris_alu_m_free_temps(t);
2300 return insn_len;
2301 }
2302
2303 static int dec_cmpu_m(CPUCRISState *env, DisasContext *dc)
2304 {
2305 TCGv t[2];
2306 int memsize = memsize_z(dc);
2307 int insn_len;
2308 LOG_DIS("cmpu.%c [$r%u%s, $r%u\n",
2309 memsize_char(memsize),
2310 dc->op1, dc->postinc ? "+]" : "]",
2311 dc->op2);
2312
2313 cris_alu_m_alloc_temps(t);
2314 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2315 cris_cc_mask(dc, CC_MASK_NZVC);
2316 cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2317 do_postinc(dc, memsize);
2318 cris_alu_m_free_temps(t);
2319 return insn_len;
2320 }
2321
2322 static int dec_cmps_m(CPUCRISState *env, DisasContext *dc)
2323 {
2324 TCGv t[2];
2325 int memsize = memsize_z(dc);
2326 int insn_len;
2327 LOG_DIS("cmps.%c [$r%u%s, $r%u\n",
2328 memsize_char(memsize),
2329 dc->op1, dc->postinc ? "+]" : "]",
2330 dc->op2);
2331
2332 cris_alu_m_alloc_temps(t);
2333 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2334 cris_cc_mask(dc, CC_MASK_NZVC);
2335 cris_alu(dc, CC_OP_CMP,
2336 cpu_R[dc->op2], cpu_R[dc->op2], t[1],
2337 memsize_zz(dc));
2338 do_postinc(dc, memsize);
2339 cris_alu_m_free_temps(t);
2340 return insn_len;
2341 }
2342
2343 static int dec_cmp_m(CPUCRISState *env, DisasContext *dc)
2344 {
2345 TCGv t[2];
2346 int memsize = memsize_zz(dc);
2347 int insn_len;
2348 LOG_DIS("cmp.%c [$r%u%s, $r%u\n",
2349 memsize_char(memsize),
2350 dc->op1, dc->postinc ? "+]" : "]",
2351 dc->op2);
2352
2353 cris_alu_m_alloc_temps(t);
2354 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2355 cris_cc_mask(dc, CC_MASK_NZVC);
2356 cris_alu(dc, CC_OP_CMP,
2357 cpu_R[dc->op2], cpu_R[dc->op2], t[1],
2358 memsize_zz(dc));
2359 do_postinc(dc, memsize);
2360 cris_alu_m_free_temps(t);
2361 return insn_len;
2362 }
2363
2364 static int dec_test_m(CPUCRISState *env, DisasContext *dc)
2365 {
2366 TCGv t[2];
2367 int memsize = memsize_zz(dc);
2368 int insn_len;
2369 LOG_DIS("test.%c [$r%u%s] op2=%x\n",
2370 memsize_char(memsize),
2371 dc->op1, dc->postinc ? "+]" : "]",
2372 dc->op2);
2373
2374 cris_evaluate_flags(dc);
2375
2376 cris_alu_m_alloc_temps(t);
2377 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2378 cris_cc_mask(dc, CC_MASK_NZ);
2379 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3);
2380
2381 cris_alu(dc, CC_OP_CMP,
2382 cpu_R[dc->op2], t[1], tcg_const_tl(0), memsize_zz(dc));
2383 do_postinc(dc, memsize);
2384 cris_alu_m_free_temps(t);
2385 return insn_len;
2386 }
2387
2388 static int dec_and_m(CPUCRISState *env, DisasContext *dc)
2389 {
2390 TCGv t[2];
2391 int memsize = memsize_zz(dc);
2392 int insn_len;
2393 LOG_DIS("and.%c [$r%u%s, $r%u\n",
2394 memsize_char(memsize),
2395 dc->op1, dc->postinc ? "+]" : "]",
2396 dc->op2);
2397
2398 cris_alu_m_alloc_temps(t);
2399 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2400 cris_cc_mask(dc, CC_MASK_NZ);
2401 cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
2402 do_postinc(dc, memsize);
2403 cris_alu_m_free_temps(t);
2404 return insn_len;
2405 }
2406
2407 static int dec_add_m(CPUCRISState *env, DisasContext *dc)
2408 {
2409 TCGv t[2];
2410 int memsize = memsize_zz(dc);
2411 int insn_len;
2412 LOG_DIS("add.%c [$r%u%s, $r%u\n",
2413 memsize_char(memsize),
2414 dc->op1, dc->postinc ? "+]" : "]",
2415 dc->op2);
2416
2417 cris_alu_m_alloc_temps(t);
2418 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2419 cris_cc_mask(dc, CC_MASK_NZVC);
2420 cris_alu(dc, CC_OP_ADD,
2421 cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
2422 do_postinc(dc, memsize);
2423 cris_alu_m_free_temps(t);
2424 return insn_len;
2425 }
2426
2427 static int dec_addo_m(CPUCRISState *env, DisasContext *dc)
2428 {
2429 TCGv t[2];
2430 int memsize = memsize_zz(dc);
2431 int insn_len;
2432 LOG_DIS("add.%c [$r%u%s, $r%u\n",
2433 memsize_char(memsize),
2434 dc->op1, dc->postinc ? "+]" : "]",
2435 dc->op2);
2436
2437 cris_alu_m_alloc_temps(t);
2438 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2439 cris_cc_mask(dc, 0);
2440 cris_alu(dc, CC_OP_ADD, cpu_R[R_ACR], t[0], t[1], 4);
2441 do_postinc(dc, memsize);
2442 cris_alu_m_free_temps(t);
2443 return insn_len;
2444 }
2445
2446 static int dec_bound_m(CPUCRISState *env, DisasContext *dc)
2447 {
2448 TCGv l[2];
2449 int memsize = memsize_zz(dc);
2450 int insn_len;
2451 LOG_DIS("bound.%c [$r%u%s, $r%u\n",
2452 memsize_char(memsize),
2453 dc->op1, dc->postinc ? "+]" : "]",
2454 dc->op2);
2455
2456 l[0] = tcg_temp_local_new();
2457 l[1] = tcg_temp_local_new();
2458 insn_len = dec_prep_alu_m(env, dc, 0, memsize, l[0], l[1]);
2459 cris_cc_mask(dc, CC_MASK_NZ);
2460 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], l[0], l[1], 4);
2461 do_postinc(dc, memsize);
2462 tcg_temp_free(l[0]);
2463 tcg_temp_free(l[1]);
2464 return insn_len;
2465 }
2466
2467 static int dec_addc_mr(CPUCRISState *env, DisasContext *dc)
2468 {
2469 TCGv t[2];
2470 int insn_len = 2;
2471 LOG_DIS("addc [$r%u%s, $r%u\n",
2472 dc->op1, dc->postinc ? "+]" : "]",
2473 dc->op2);
2474
2475 cris_evaluate_flags(dc);
2476
2477 /* Set for this insn. */
2478 dc->flagx_known = 1;
2479 dc->flags_x = X_FLAG;
2480
2481 cris_alu_m_alloc_temps(t);
2482 insn_len = dec_prep_alu_m(env, dc, 0, 4, t[0], t[1]);
2483 cris_cc_mask(dc, CC_MASK_NZVC);
2484 cris_alu(dc, CC_OP_ADDC, cpu_R[dc->op2], t[0], t[1], 4);
2485 do_postinc(dc, 4);
2486 cris_alu_m_free_temps(t);
2487 return insn_len;
2488 }
2489
2490 static int dec_sub_m(CPUCRISState *env, DisasContext *dc)
2491 {
2492 TCGv t[2];
2493 int memsize = memsize_zz(dc);
2494 int insn_len;
2495 LOG_DIS("sub.%c [$r%u%s, $r%u ir=%x zz=%x\n",
2496 memsize_char(memsize),
2497 dc->op1, dc->postinc ? "+]" : "]",
2498 dc->op2, dc->ir, dc->zzsize);
2499
2500 cris_alu_m_alloc_temps(t);
2501 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2502 cris_cc_mask(dc, CC_MASK_NZVC);
2503 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], memsize);
2504 do_postinc(dc, memsize);
2505 cris_alu_m_free_temps(t);
2506 return insn_len;
2507 }
2508
2509 static int dec_or_m(CPUCRISState *env, DisasContext *dc)
2510 {
2511 TCGv t[2];
2512 int memsize = memsize_zz(dc);
2513 int insn_len;
2514 LOG_DIS("or.%c [$r%u%s, $r%u pc=%x\n",
2515 memsize_char(memsize),
2516 dc->op1, dc->postinc ? "+]" : "]",
2517 dc->op2, dc->pc);
2518
2519 cris_alu_m_alloc_temps(t);
2520 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2521 cris_cc_mask(dc, CC_MASK_NZ);
2522 cris_alu(dc, CC_OP_OR,
2523 cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
2524 do_postinc(dc, memsize);
2525 cris_alu_m_free_temps(t);
2526 return insn_len;
2527 }
2528
2529 static int dec_move_mp(CPUCRISState *env, DisasContext *dc)
2530 {
2531 TCGv t[2];
2532 int memsize = memsize_zz(dc);
2533 int insn_len = 2;
2534
2535 LOG_DIS("move.%c [$r%u%s, $p%u\n",
2536 memsize_char(memsize),
2537 dc->op1,
2538 dc->postinc ? "+]" : "]",
2539 dc->op2);
2540
2541 cris_alu_m_alloc_temps(t);
2542 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2543 cris_cc_mask(dc, 0);
2544 if (dc->op2 == PR_CCS) {
2545 cris_evaluate_flags(dc);
2546 if (dc->tb_flags & U_FLAG) {
2547 /* User space is not allowed to touch all flags. */
2548 tcg_gen_andi_tl(t[1], t[1], 0x39f);
2549 tcg_gen_andi_tl(t[0], cpu_PR[PR_CCS], ~0x39f);
2550 tcg_gen_or_tl(t[1], t[0], t[1]);
2551 }
2552 }
2553
2554 t_gen_mov_preg_TN(dc, dc->op2, t[1]);
2555
2556 do_postinc(dc, memsize);
2557 cris_alu_m_free_temps(t);
2558 return insn_len;
2559 }
2560
2561 static int dec_move_pm(CPUCRISState *env, DisasContext *dc)
2562 {
2563 TCGv t0;
2564 int memsize;
2565
2566 memsize = preg_sizes[dc->op2];
2567
2568 LOG_DIS("move.%c $p%u, [$r%u%s\n",
2569 memsize_char(memsize),
2570 dc->op2, dc->op1, dc->postinc ? "+]" : "]");
2571
2572 /* prepare store. Address in T0, value in T1. */
2573 if (dc->op2 == PR_CCS) {
2574 cris_evaluate_flags(dc);
2575 }
2576 t0 = tcg_temp_new();
2577 t_gen_mov_TN_preg(t0, dc->op2);
2578 cris_flush_cc_state(dc);
2579 gen_store(dc, cpu_R[dc->op1], t0, memsize);
2580 tcg_temp_free(t0);
2581
2582 cris_cc_mask(dc, 0);
2583 if (dc->postinc) {
2584 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize);
2585 }
2586 return 2;
2587 }
2588
2589 static int dec_movem_mr(CPUCRISState *env, DisasContext *dc)
2590 {
2591 TCGv_i64 tmp[16];
2592 TCGv tmp32;
2593 TCGv addr;
2594 int i;
2595 int nr = dc->op2 + 1;
2596
2597 LOG_DIS("movem [$r%u%s, $r%u\n", dc->op1,
2598 dc->postinc ? "+]" : "]", dc->op2);
2599
2600 addr = tcg_temp_new();
2601 /* There are probably better ways of doing this. */
2602 cris_flush_cc_state(dc);
2603 for (i = 0; i < (nr >> 1); i++) {
2604 tmp[i] = tcg_temp_new_i64();
2605 tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8);
2606 gen_load64(dc, tmp[i], addr);
2607 }
2608 if (nr & 1) {
2609 tmp32 = tcg_temp_new_i32();
2610 tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8);
2611 gen_load(dc, tmp32, addr, 4, 0);
2612 } else {
2613 TCGV_UNUSED(tmp32);
2614 }
2615 tcg_temp_free(addr);
2616
2617 for (i = 0; i < (nr >> 1); i++) {
2618 tcg_gen_trunc_i64_i32(cpu_R[i * 2], tmp[i]);
2619 tcg_gen_shri_i64(tmp[i], tmp[i], 32);
2620 tcg_gen_trunc_i64_i32(cpu_R[i * 2 + 1], tmp[i]);
2621 tcg_temp_free_i64(tmp[i]);
2622 }
2623 if (nr & 1) {
2624 tcg_gen_mov_tl(cpu_R[dc->op2], tmp32);
2625 tcg_temp_free(tmp32);
2626 }
2627
2628 /* writeback the updated pointer value. */
2629 if (dc->postinc) {
2630 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], nr * 4);
2631 }
2632
2633 /* gen_load might want to evaluate the previous insns flags. */
2634 cris_cc_mask(dc, 0);
2635 return 2;
2636 }
2637
2638 static int dec_movem_rm(CPUCRISState *env, DisasContext *dc)
2639 {
2640 TCGv tmp;
2641 TCGv addr;
2642 int i;
2643
2644 LOG_DIS("movem $r%u, [$r%u%s\n", dc->op2, dc->op1,
2645 dc->postinc ? "+]" : "]");
2646
2647 cris_flush_cc_state(dc);
2648
2649 tmp = tcg_temp_new();
2650 addr = tcg_temp_new();
2651 tcg_gen_movi_tl(tmp, 4);
2652 tcg_gen_mov_tl(addr, cpu_R[dc->op1]);
2653 for (i = 0; i <= dc->op2; i++) {
2654 /* Displace addr. */
2655 /* Perform the store. */
2656 gen_store(dc, addr, cpu_R[i], 4);
2657 tcg_gen_add_tl(addr, addr, tmp);
2658 }
2659 if (dc->postinc) {
2660 tcg_gen_mov_tl(cpu_R[dc->op1], addr);
2661 }
2662 cris_cc_mask(dc, 0);
2663 tcg_temp_free(tmp);
2664 tcg_temp_free(addr);
2665 return 2;
2666 }
2667
2668 static int dec_move_rm(CPUCRISState *env, DisasContext *dc)
2669 {
2670 int memsize;
2671
2672 memsize = memsize_zz(dc);
2673
2674 LOG_DIS("move.%c $r%u, [$r%u]\n",
2675 memsize_char(memsize), dc->op2, dc->op1);
2676
2677 /* prepare store. */
2678 cris_flush_cc_state(dc);
2679 gen_store(dc, cpu_R[dc->op1], cpu_R[dc->op2], memsize);
2680
2681 if (dc->postinc) {
2682 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize);
2683 }
2684 cris_cc_mask(dc, 0);
2685 return 2;
2686 }
2687
2688 static int dec_lapcq(CPUCRISState *env, DisasContext *dc)
2689 {
2690 LOG_DIS("lapcq %x, $r%u\n",
2691 dc->pc + dc->op1*2, dc->op2);
2692 cris_cc_mask(dc, 0);
2693 tcg_gen_movi_tl(cpu_R[dc->op2], dc->pc + dc->op1 * 2);
2694 return 2;
2695 }
2696
2697 static int dec_lapc_im(CPUCRISState *env, DisasContext *dc)
2698 {
2699 unsigned int rd;
2700 int32_t imm;
2701 int32_t pc;
2702
2703 rd = dc->op2;
2704
2705 cris_cc_mask(dc, 0);
2706 imm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2707 LOG_DIS("lapc 0x%x, $r%u\n", imm + dc->pc, dc->op2);
2708
2709 pc = dc->pc;
2710 pc += imm;
2711 tcg_gen_movi_tl(cpu_R[rd], pc);
2712 return 6;
2713 }
2714
2715 /* Jump to special reg. */
2716 static int dec_jump_p(CPUCRISState *env, DisasContext *dc)
2717 {
2718 LOG_DIS("jump $p%u\n", dc->op2);
2719
2720 if (dc->op2 == PR_CCS) {
2721 cris_evaluate_flags(dc);
2722 }
2723 t_gen_mov_TN_preg(env_btarget, dc->op2);
2724 /* rete will often have low bit set to indicate delayslot. */
2725 tcg_gen_andi_tl(env_btarget, env_btarget, ~1);
2726 cris_cc_mask(dc, 0);
2727 cris_prepare_jmp(dc, JMP_INDIRECT);
2728 return 2;
2729 }
2730
2731 /* Jump and save. */
2732 static int dec_jas_r(CPUCRISState *env, DisasContext *dc)
2733 {
2734 LOG_DIS("jas $r%u, $p%u\n", dc->op1, dc->op2);
2735 cris_cc_mask(dc, 0);
2736 /* Store the return address in Pd. */
2737 tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]);
2738 if (dc->op2 > 15) {
2739 abort();
2740 }
2741 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4));
2742
2743 cris_prepare_jmp(dc, JMP_INDIRECT);
2744 return 2;
2745 }
2746
2747 static int dec_jas_im(CPUCRISState *env, DisasContext *dc)
2748 {
2749 uint32_t imm;
2750
2751 imm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2752
2753 LOG_DIS("jas 0x%x\n", imm);
2754 cris_cc_mask(dc, 0);
2755 /* Store the return address in Pd. */
2756 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8));
2757
2758 dc->jmp_pc = imm;
2759 cris_prepare_jmp(dc, JMP_DIRECT);
2760 return 6;
2761 }
2762
2763 static int dec_jasc_im(CPUCRISState *env, DisasContext *dc)
2764 {
2765 uint32_t imm;
2766
2767 imm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2768
2769 LOG_DIS("jasc 0x%x\n", imm);
2770 cris_cc_mask(dc, 0);
2771 /* Store the return address in Pd. */
2772 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8 + 4));
2773
2774 dc->jmp_pc = imm;
2775 cris_prepare_jmp(dc, JMP_DIRECT);
2776 return 6;
2777 }
2778
2779 static int dec_jasc_r(CPUCRISState *env, DisasContext *dc)
2780 {
2781 LOG_DIS("jasc_r $r%u, $p%u\n", dc->op1, dc->op2);
2782 cris_cc_mask(dc, 0);
2783 /* Store the return address in Pd. */
2784 tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]);
2785 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4 + 4));
2786 cris_prepare_jmp(dc, JMP_INDIRECT);
2787 return 2;
2788 }
2789
2790 static int dec_bcc_im(CPUCRISState *env, DisasContext *dc)
2791 {
2792 int32_t offset;
2793 uint32_t cond = dc->op2;
2794
2795 offset = cris_fetch(env, dc, dc->pc + 2, 2, 1);
2796
2797 LOG_DIS("b%s %d pc=%x dst=%x\n",
2798 cc_name(cond), offset,
2799 dc->pc, dc->pc + offset);
2800
2801 cris_cc_mask(dc, 0);
2802 /* op2 holds the condition-code. */
2803 cris_prepare_cc_branch(dc, offset, cond);
2804 return 4;
2805 }
2806
2807 static int dec_bas_im(CPUCRISState *env, DisasContext *dc)
2808 {
2809 int32_t simm;
2810
2811 simm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2812
2813 LOG_DIS("bas 0x%x, $p%u\n", dc->pc + simm, dc->op2);
2814 cris_cc_mask(dc, 0);
2815 /* Store the return address in Pd. */
2816 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8));
2817
2818 dc->jmp_pc = dc->pc + simm;
2819 cris_prepare_jmp(dc, JMP_DIRECT);
2820 return 6;
2821 }
2822
2823 static int dec_basc_im(CPUCRISState *env, DisasContext *dc)
2824 {
2825 int32_t simm;
2826 simm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2827
2828 LOG_DIS("basc 0x%x, $p%u\n", dc->pc + simm, dc->op2);
2829 cris_cc_mask(dc, 0);
2830 /* Store the return address in Pd. */
2831 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 12));
2832
2833 dc->jmp_pc = dc->pc + simm;
2834 cris_prepare_jmp(dc, JMP_DIRECT);
2835 return 6;
2836 }
2837
2838 static int dec_rfe_etc(CPUCRISState *env, DisasContext *dc)
2839 {
2840 cris_cc_mask(dc, 0);
2841
2842 if (dc->op2 == 15) {
2843 tcg_gen_st_i32(tcg_const_i32(1), cpu_env,
2844 -offsetof(CRISCPU, env) + offsetof(CPUState, halted));
2845 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2846 t_gen_raise_exception(EXCP_HLT);
2847 return 2;
2848 }
2849
2850 switch (dc->op2 & 7) {
2851 case 2:
2852 /* rfe. */
2853 LOG_DIS("rfe\n");
2854 cris_evaluate_flags(dc);
2855 gen_helper_rfe(cpu_env);
2856 dc->is_jmp = DISAS_UPDATE;
2857 break;
2858 case 5:
2859 /* rfn. */
2860 LOG_DIS("rfn\n");
2861 cris_evaluate_flags(dc);
2862 gen_helper_rfn(cpu_env);
2863 dc->is_jmp = DISAS_UPDATE;
2864 break;
2865 case 6:
2866 LOG_DIS("break %d\n", dc->op1);
2867 cris_evaluate_flags(dc);
2868 /* break. */
2869 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2870
2871 /* Breaks start at 16 in the exception vector. */
2872 t_gen_mov_env_TN(trap_vector,
2873 tcg_const_tl(dc->op1 + 16));
2874 t_gen_raise_exception(EXCP_BREAK);
2875 dc->is_jmp = DISAS_UPDATE;
2876 break;
2877 default:
2878 printf("op2=%x\n", dc->op2);
2879 BUG();
2880 break;
2881
2882 }
2883 return 2;
2884 }
2885
2886 static int dec_ftag_fidx_d_m(CPUCRISState *env, DisasContext *dc)
2887 {
2888 return 2;
2889 }
2890
2891 static int dec_ftag_fidx_i_m(CPUCRISState *env, DisasContext *dc)
2892 {
2893 return 2;
2894 }
2895
2896 static int dec_null(CPUCRISState *env, DisasContext *dc)
2897 {
2898 printf("unknown insn pc=%x opc=%x op1=%x op2=%x\n",
2899 dc->pc, dc->opcode, dc->op1, dc->op2);
2900 fflush(NULL);
2901 BUG();
2902 return 2;
2903 }
2904
2905 static struct decoder_info {
2906 struct {
2907 uint32_t bits;
2908 uint32_t mask;
2909 };
2910 int (*dec)(CPUCRISState *env, DisasContext *dc);
2911 } decinfo[] = {
2912 /* Order matters here. */
2913 {DEC_MOVEQ, dec_moveq},
2914 {DEC_BTSTQ, dec_btstq},
2915 {DEC_CMPQ, dec_cmpq},
2916 {DEC_ADDOQ, dec_addoq},
2917 {DEC_ADDQ, dec_addq},
2918 {DEC_SUBQ, dec_subq},
2919 {DEC_ANDQ, dec_andq},
2920 {DEC_ORQ, dec_orq},
2921 {DEC_ASRQ, dec_asrq},
2922 {DEC_LSLQ, dec_lslq},
2923 {DEC_LSRQ, dec_lsrq},
2924 {DEC_BCCQ, dec_bccq},
2925
2926 {DEC_BCC_IM, dec_bcc_im},
2927 {DEC_JAS_IM, dec_jas_im},
2928 {DEC_JAS_R, dec_jas_r},
2929 {DEC_JASC_IM, dec_jasc_im},
2930 {DEC_JASC_R, dec_jasc_r},
2931 {DEC_BAS_IM, dec_bas_im},
2932 {DEC_BASC_IM, dec_basc_im},
2933 {DEC_JUMP_P, dec_jump_p},
2934 {DEC_LAPC_IM, dec_lapc_im},
2935 {DEC_LAPCQ, dec_lapcq},
2936
2937 {DEC_RFE_ETC, dec_rfe_etc},
2938 {DEC_ADDC_MR, dec_addc_mr},
2939
2940 {DEC_MOVE_MP, dec_move_mp},
2941 {DEC_MOVE_PM, dec_move_pm},
2942 {DEC_MOVEM_MR, dec_movem_mr},
2943 {DEC_MOVEM_RM, dec_movem_rm},
2944 {DEC_MOVE_PR, dec_move_pr},
2945 {DEC_SCC_R, dec_scc_r},
2946 {DEC_SETF, dec_setclrf},
2947 {DEC_CLEARF, dec_setclrf},
2948
2949 {DEC_MOVE_SR, dec_move_sr},
2950 {DEC_MOVE_RP, dec_move_rp},
2951 {DEC_SWAP_R, dec_swap_r},
2952 {DEC_ABS_R, dec_abs_r},
2953 {DEC_LZ_R, dec_lz_r},
2954 {DEC_MOVE_RS, dec_move_rs},
2955 {DEC_BTST_R, dec_btst_r},
2956 {DEC_ADDC_R, dec_addc_r},
2957
2958 {DEC_DSTEP_R, dec_dstep_r},
2959 {DEC_XOR_R, dec_xor_r},
2960 {DEC_MCP_R, dec_mcp_r},
2961 {DEC_CMP_R, dec_cmp_r},
2962
2963 {DEC_ADDI_R, dec_addi_r},
2964 {DEC_ADDI_ACR, dec_addi_acr},
2965
2966 {DEC_ADD_R, dec_add_r},
2967 {DEC_SUB_R, dec_sub_r},
2968
2969 {DEC_ADDU_R, dec_addu_r},
2970 {DEC_ADDS_R, dec_adds_r},
2971 {DEC_SUBU_R, dec_subu_r},
2972 {DEC_SUBS_R, dec_subs_r},
2973 {DEC_LSL_R, dec_lsl_r},
2974
2975 {DEC_AND_R, dec_and_r},
2976 {DEC_OR_R, dec_or_r},
2977 {DEC_BOUND_R, dec_bound_r},
2978 {DEC_ASR_R, dec_asr_r},
2979 {DEC_LSR_R, dec_lsr_r},
2980
2981 {DEC_MOVU_R, dec_movu_r},
2982 {DEC_MOVS_R, dec_movs_r},
2983 {DEC_NEG_R, dec_neg_r},
2984 {DEC_MOVE_R, dec_move_r},
2985
2986 {DEC_FTAG_FIDX_I_M, dec_ftag_fidx_i_m},
2987 {DEC_FTAG_FIDX_D_M, dec_ftag_fidx_d_m},
2988
2989 {DEC_MULS_R, dec_muls_r},
2990 {DEC_MULU_R, dec_mulu_r},
2991
2992 {DEC_ADDU_M, dec_addu_m},
2993 {DEC_ADDS_M, dec_adds_m},
2994 {DEC_SUBU_M, dec_subu_m},
2995 {DEC_SUBS_M, dec_subs_m},
2996
2997 {DEC_CMPU_M, dec_cmpu_m},
2998 {DEC_CMPS_M, dec_cmps_m},
2999 {DEC_MOVU_M, dec_movu_m},
3000 {DEC_MOVS_M, dec_movs_m},
3001
3002 {DEC_CMP_M, dec_cmp_m},
3003 {DEC_ADDO_M, dec_addo_m},
3004 {DEC_BOUND_M, dec_bound_m},
3005 {DEC_ADD_M, dec_add_m},
3006 {DEC_SUB_M, dec_sub_m},
3007 {DEC_AND_M, dec_and_m},
3008 {DEC_OR_M, dec_or_m},
3009 {DEC_MOVE_RM, dec_move_rm},
3010 {DEC_TEST_M, dec_test_m},
3011 {DEC_MOVE_MR, dec_move_mr},
3012
3013 {{0, 0}, dec_null}
3014 };
3015
3016 static unsigned int crisv32_decoder(CPUCRISState *env, DisasContext *dc)
3017 {
3018 int insn_len = 2;
3019 int i;
3020
3021 if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP | CPU_LOG_TB_OP_OPT))) {
3022 tcg_gen_debug_insn_start(dc->pc);
3023 }
3024
3025 /* Load a halfword onto the instruction register. */
3026 dc->ir = cris_fetch(env, dc, dc->pc, 2, 0);
3027
3028 /* Now decode it. */
3029 dc->opcode = EXTRACT_FIELD(dc->ir, 4, 11);
3030 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 3);
3031 dc->op2 = EXTRACT_FIELD(dc->ir, 12, 15);
3032 dc->zsize = EXTRACT_FIELD(dc->ir, 4, 4);
3033 dc->zzsize = EXTRACT_FIELD(dc->ir, 4, 5);
3034 dc->postinc = EXTRACT_FIELD(dc->ir, 10, 10);
3035
3036 /* Large switch for all insns. */
3037 for (i = 0; i < ARRAY_SIZE(decinfo); i++) {
3038 if ((dc->opcode & decinfo[i].mask) == decinfo[i].bits) {
3039 insn_len = decinfo[i].dec(env, dc);
3040 break;
3041 }
3042 }
3043
3044 #if !defined(CONFIG_USER_ONLY)
3045 /* Single-stepping ? */
3046 if (dc->tb_flags & S_FLAG) {
3047 int l1;
3048
3049 l1 = gen_new_label();
3050 tcg_gen_brcondi_tl(TCG_COND_NE, cpu_PR[PR_SPC], dc->pc, l1);
3051 /* We treat SPC as a break with an odd trap vector. */
3052 cris_evaluate_flags(dc);
3053 t_gen_mov_env_TN(trap_vector, tcg_const_tl(3));
3054 tcg_gen_movi_tl(env_pc, dc->pc + insn_len);
3055 tcg_gen_movi_tl(cpu_PR[PR_SPC], dc->pc + insn_len);
3056 t_gen_raise_exception(EXCP_BREAK);
3057 gen_set_label(l1);
3058 }
3059 #endif
3060 return insn_len;
3061 }
3062
3063 static void check_breakpoint(CPUCRISState *env, DisasContext *dc)
3064 {
3065 CPUState *cs = CPU(cris_env_get_cpu(env));
3066 CPUBreakpoint *bp;
3067
3068 if (unlikely(!QTAILQ_EMPTY(&cs->breakpoints))) {
3069 QTAILQ_FOREACH(bp, &cs->breakpoints, entry) {
3070 if (bp->pc == dc->pc) {
3071 cris_evaluate_flags(dc);
3072 tcg_gen_movi_tl(env_pc, dc->pc);
3073 t_gen_raise_exception(EXCP_DEBUG);
3074 dc->is_jmp = DISAS_UPDATE;
3075 }
3076 }
3077 }
3078 }
3079
3080 #include "translate_v10.c"
3081
3082 /*
3083 * Delay slots on QEMU/CRIS.
3084 *
3085 * If an exception hits on a delayslot, the core will let ERP (the Exception
3086 * Return Pointer) point to the branch (the previous) insn and set the lsb to
3087 * to give SW a hint that the exception actually hit on the dslot.
3088 *
3089 * CRIS expects all PC addresses to be 16-bit aligned. The lsb is ignored by
3090 * the core and any jmp to an odd addresses will mask off that lsb. It is
3091 * simply there to let sw know there was an exception on a dslot.
3092 *
3093 * When the software returns from an exception, the branch will re-execute.
3094 * On QEMU care needs to be taken when a branch+delayslot sequence is broken
3095 * and the branch and delayslot dont share pages.
3096 *
3097 * The TB contaning the branch insn will set up env->btarget and evaluate
3098 * env->btaken. When the translation loop exits we will note that the branch
3099 * sequence is broken and let env->dslot be the size of the branch insn (those
3100 * vary in length).
3101 *
3102 * The TB contaning the delayslot will have the PC of its real insn (i.e no lsb
3103 * set). It will also expect to have env->dslot setup with the size of the
3104 * delay slot so that env->pc - env->dslot point to the branch insn. This TB
3105 * will execute the dslot and take the branch, either to btarget or just one
3106 * insn ahead.
3107 *
3108 * When exceptions occur, we check for env->dslot in do_interrupt to detect
3109 * broken branch sequences and setup $erp accordingly (i.e let it point to the
3110 * branch and set lsb). Then env->dslot gets cleared so that the exception
3111 * handler can enter. When returning from exceptions (jump $erp) the lsb gets
3112 * masked off and we will reexecute the branch insn.
3113 *
3114 */
3115
3116 /* generate intermediate code for basic block 'tb'. */
3117 static inline void
3118 gen_intermediate_code_internal(CRISCPU *cpu, TranslationBlock *tb,
3119 bool search_pc)
3120 {
3121 CPUState *cs = CPU(cpu);
3122 CPUCRISState *env = &cpu->env;
3123 uint16_t *gen_opc_end;
3124 uint32_t pc_start;
3125 unsigned int insn_len;
3126 int j, lj;
3127 struct DisasContext ctx;
3128 struct DisasContext *dc = &ctx;
3129 uint32_t next_page_start;
3130 target_ulong npc;
3131 int num_insns;
3132 int max_insns;
3133
3134 if (env->pregs[PR_VR] == 32) {
3135 dc->decoder = crisv32_decoder;
3136 dc->clear_locked_irq = 0;
3137 } else {
3138 dc->decoder = crisv10_decoder;
3139 dc->clear_locked_irq = 1;
3140 }
3141
3142 /* Odd PC indicates that branch is rexecuting due to exception in the
3143 * delayslot, like in real hw.
3144 */
3145 pc_start = tb->pc & ~1;
3146 dc->cpu = cpu;
3147 dc->tb = tb;
3148
3149 gen_opc_end = tcg_ctx.gen_opc_buf + OPC_MAX_SIZE;
3150
3151 dc->is_jmp = DISAS_NEXT;
3152 dc->ppc = pc_start;
3153 dc->pc = pc_start;
3154 dc->singlestep_enabled = cs->singlestep_enabled;
3155 dc->flags_uptodate = 1;
3156 dc->flagx_known = 1;
3157 dc->flags_x = tb->flags & X_FLAG;
3158 dc->cc_x_uptodate = 0;
3159 dc->cc_mask = 0;
3160 dc->update_cc = 0;
3161 dc->clear_prefix = 0;
3162
3163 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
3164 dc->cc_size_uptodate = -1;
3165
3166 /* Decode TB flags. */
3167 dc->tb_flags = tb->flags & (S_FLAG | P_FLAG | U_FLAG \
3168 | X_FLAG | PFIX_FLAG);
3169 dc->delayed_branch = !!(tb->flags & 7);
3170 if (dc->delayed_branch) {
3171 dc->jmp = JMP_INDIRECT;
3172 } else {
3173 dc->jmp = JMP_NOJMP;
3174 }
3175
3176 dc->cpustate_changed = 0;
3177
3178 if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
3179 qemu_log(
3180 "srch=%d pc=%x %x flg=%" PRIx64 " bt=%x ds=%u ccs=%x\n"
3181 "pid=%x usp=%x\n"
3182 "%x.%x.%x.%x\n"
3183 "%x.%x.%x.%x\n"
3184 "%x.%x.%x.%x\n"
3185 "%x.%x.%x.%x\n",
3186 search_pc, dc->pc, dc->ppc,
3187 (uint64_t)tb->flags,
3188 env->btarget, (unsigned)tb->flags & 7,
3189 env->pregs[PR_CCS],
3190 env->pregs[PR_PID], env->pregs[PR_USP],
3191 env->regs[0], env->regs[1], env->regs[2], env->regs[3],
3192 env->regs[4], env->regs[5], env->regs[6], env->regs[7],
3193 env->regs[8], env->regs[9],
3194 env->regs[10], env->regs[11],
3195 env->regs[12], env->regs[13],
3196 env->regs[14], env->regs[15]);
3197 qemu_log("--------------\n");
3198 qemu_log("IN: %s\n", lookup_symbol(pc_start));
3199 }
3200
3201 next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
3202 lj = -1;
3203 num_insns = 0;
3204 max_insns = tb->cflags & CF_COUNT_MASK;
3205 if (max_insns == 0) {
3206 max_insns = CF_COUNT_MASK;
3207 }
3208
3209 gen_tb_start();
3210 do {
3211 check_breakpoint(env, dc);
3212
3213 if (search_pc) {
3214 j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
3215 if (lj < j) {
3216 lj++;
3217 while (lj < j) {
3218 tcg_ctx.gen_opc_instr_start[lj++] = 0;
3219 }
3220 }
3221 if (dc->delayed_branch == 1) {
3222 tcg_ctx.gen_opc_pc[lj] = dc->ppc | 1;
3223 } else {
3224 tcg_ctx.gen_opc_pc[lj] = dc->pc;
3225 }
3226 tcg_ctx.gen_opc_instr_start[lj] = 1;
3227 tcg_ctx.gen_opc_icount[lj] = num_insns;
3228 }
3229
3230 /* Pretty disas. */
3231 LOG_DIS("%8.8x:\t", dc->pc);
3232
3233 if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO)) {
3234 gen_io_start();
3235 }
3236 dc->clear_x = 1;
3237
3238 insn_len = dc->decoder(env, dc);
3239 dc->ppc = dc->pc;
3240 dc->pc += insn_len;
3241 if (dc->clear_x) {
3242 cris_clear_x_flag(dc);
3243 }
3244
3245 num_insns++;
3246 /* Check for delayed branches here. If we do it before
3247 actually generating any host code, the simulator will just
3248 loop doing nothing for on this program location. */
3249 if (dc->delayed_branch) {
3250 dc->delayed_branch--;
3251 if (dc->delayed_branch == 0) {
3252 if (tb->flags & 7) {
3253 t_gen_mov_env_TN(dslot, tcg_const_tl(0));
3254 }
3255 if (dc->cpustate_changed || !dc->flagx_known
3256 || (dc->flags_x != (tb->flags & X_FLAG))) {
3257 cris_store_direct_jmp(dc);
3258 }
3259
3260 if (dc->clear_locked_irq) {
3261 dc->clear_locked_irq = 0;
3262 t_gen_mov_env_TN(locked_irq, tcg_const_tl(0));
3263 }
3264
3265 if (dc->jmp == JMP_DIRECT_CC) {
3266 int l1;
3267
3268 l1 = gen_new_label();
3269 cris_evaluate_flags(dc);
3270
3271 /* Conditional jmp. */
3272 tcg_gen_brcondi_tl(TCG_COND_EQ,
3273 env_btaken, 0, l1);
3274 gen_goto_tb(dc, 1, dc->jmp_pc);
3275 gen_set_label(l1);
3276 gen_goto_tb(dc, 0, dc->pc);
3277 dc->is_jmp = DISAS_TB_JUMP;
3278 dc->jmp = JMP_NOJMP;
3279 } else if (dc->jmp == JMP_DIRECT) {
3280 cris_evaluate_flags(dc);
3281 gen_goto_tb(dc, 0, dc->jmp_pc);
3282 dc->is_jmp = DISAS_TB_JUMP;
3283 dc->jmp = JMP_NOJMP;
3284 } else {
3285 t_gen_cc_jmp(env_btarget, tcg_const_tl(dc->pc));
3286 dc->is_jmp = DISAS_JUMP;
3287 }
3288 break;
3289 }
3290 }
3291
3292 /* If we are rexecuting a branch due to exceptions on
3293 delay slots dont break. */
3294 if (!(tb->pc & 1) && cs->singlestep_enabled) {
3295 break;
3296 }
3297 } while (!dc->is_jmp && !dc->cpustate_changed
3298 && tcg_ctx.gen_opc_ptr < gen_opc_end
3299 && !singlestep
3300 && (dc->pc < next_page_start)
3301 && num_insns < max_insns);
3302
3303 if (dc->clear_locked_irq) {
3304 t_gen_mov_env_TN(locked_irq, tcg_const_tl(0));
3305 }
3306
3307 npc = dc->pc;
3308
3309 if (tb->cflags & CF_LAST_IO)
3310 gen_io_end();
3311 /* Force an update if the per-tb cpu state has changed. */
3312 if (dc->is_jmp == DISAS_NEXT
3313 && (dc->cpustate_changed || !dc->flagx_known
3314 || (dc->flags_x != (tb->flags & X_FLAG)))) {
3315 dc->is_jmp = DISAS_UPDATE;
3316 tcg_gen_movi_tl(env_pc, npc);
3317 }
3318 /* Broken branch+delayslot sequence. */
3319 if (dc->delayed_branch == 1) {
3320 /* Set env->dslot to the size of the branch insn. */
3321 t_gen_mov_env_TN(dslot, tcg_const_tl(dc->pc - dc->ppc));
3322 cris_store_direct_jmp(dc);
3323 }
3324
3325 cris_evaluate_flags(dc);
3326
3327 if (unlikely(cs->singlestep_enabled)) {
3328 if (dc->is_jmp == DISAS_NEXT) {
3329 tcg_gen_movi_tl(env_pc, npc);
3330 }
3331 t_gen_raise_exception(EXCP_DEBUG);
3332 } else {
3333 switch (dc->is_jmp) {
3334 case DISAS_NEXT:
3335 gen_goto_tb(dc, 1, npc);
3336 break;
3337 default:
3338 case DISAS_JUMP:
3339 case DISAS_UPDATE:
3340 /* indicate that the hash table must be used
3341 to find the next TB */
3342 tcg_gen_exit_tb(0);
3343 break;
3344 case DISAS_SWI:
3345 case DISAS_TB_JUMP:
3346 /* nothing more to generate */
3347 break;
3348 }
3349 }
3350 gen_tb_end(tb, num_insns);
3351 *tcg_ctx.gen_opc_ptr = INDEX_op_end;
3352 if (search_pc) {
3353 j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
3354 lj++;
3355 while (lj <= j) {
3356 tcg_ctx.gen_opc_instr_start[lj++] = 0;
3357 }
3358 } else {
3359 tb->size = dc->pc - pc_start;
3360 tb->icount = num_insns;
3361 }
3362
3363 #ifdef DEBUG_DISAS
3364 #if !DISAS_CRIS
3365 if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
3366 log_target_disas(env, pc_start, dc->pc - pc_start,
3367 env->pregs[PR_VR]);
3368 qemu_log("\nisize=%d osize=%td\n",
3369 dc->pc - pc_start, tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf);
3370 }
3371 #endif
3372 #endif
3373 }
3374
3375 void gen_intermediate_code (CPUCRISState *env, struct TranslationBlock *tb)
3376 {
3377 gen_intermediate_code_internal(cris_env_get_cpu(env), tb, false);
3378 }
3379
3380 void gen_intermediate_code_pc (CPUCRISState *env, struct TranslationBlock *tb)
3381 {
3382 gen_intermediate_code_internal(cris_env_get_cpu(env), tb, true);
3383 }
3384
3385 void cris_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf,
3386 int flags)
3387 {
3388 CRISCPU *cpu = CRIS_CPU(cs);
3389 CPUCRISState *env = &cpu->env;
3390 int i;
3391 uint32_t srs;
3392
3393 if (!env || !f) {
3394 return;
3395 }
3396
3397 cpu_fprintf(f, "PC=%x CCS=%x btaken=%d btarget=%x\n"
3398 "cc_op=%d cc_src=%d cc_dest=%d cc_result=%x cc_mask=%x\n",
3399 env->pc, env->pregs[PR_CCS], env->btaken, env->btarget,
3400 env->cc_op,
3401 env->cc_src, env->cc_dest, env->cc_result, env->cc_mask);
3402
3403
3404 for (i = 0; i < 16; i++) {
3405 cpu_fprintf(f, "%s=%8.8x ", regnames[i], env->regs[i]);
3406 if ((i + 1) % 4 == 0) {
3407 cpu_fprintf(f, "\n");
3408 }
3409 }
3410 cpu_fprintf(f, "\nspecial regs:\n");
3411 for (i = 0; i < 16; i++) {
3412 cpu_fprintf(f, "%s=%8.8x ", pregnames[i], env->pregs[i]);
3413 if ((i + 1) % 4 == 0) {
3414 cpu_fprintf(f, "\n");
3415 }
3416 }
3417 srs = env->pregs[PR_SRS];
3418 cpu_fprintf(f, "\nsupport function regs bank %x:\n", srs);
3419 if (srs < ARRAY_SIZE(env->sregs)) {
3420 for (i = 0; i < 16; i++) {
3421 cpu_fprintf(f, "s%2.2d=%8.8x ",
3422 i, env->sregs[srs][i]);
3423 if ((i + 1) % 4 == 0) {
3424 cpu_fprintf(f, "\n");
3425 }
3426 }
3427 }
3428 cpu_fprintf(f, "\n\n");
3429
3430 }
3431
3432 void cris_initialize_tcg(void)
3433 {
3434 int i;
3435
3436 cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
3437 cc_x = tcg_global_mem_new(TCG_AREG0,
3438 offsetof(CPUCRISState, cc_x), "cc_x");
3439 cc_src = tcg_global_mem_new(TCG_AREG0,
3440 offsetof(CPUCRISState, cc_src), "cc_src");
3441 cc_dest = tcg_global_mem_new(TCG_AREG0,
3442 offsetof(CPUCRISState, cc_dest),
3443 "cc_dest");
3444 cc_result = tcg_global_mem_new(TCG_AREG0,
3445 offsetof(CPUCRISState, cc_result),
3446 "cc_result");
3447 cc_op = tcg_global_mem_new(TCG_AREG0,
3448 offsetof(CPUCRISState, cc_op), "cc_op");
3449 cc_size = tcg_global_mem_new(TCG_AREG0,
3450 offsetof(CPUCRISState, cc_size),
3451 "cc_size");
3452 cc_mask = tcg_global_mem_new(TCG_AREG0,
3453 offsetof(CPUCRISState, cc_mask),
3454 "cc_mask");
3455
3456 env_pc = tcg_global_mem_new(TCG_AREG0,
3457 offsetof(CPUCRISState, pc),
3458 "pc");
3459 env_btarget = tcg_global_mem_new(TCG_AREG0,
3460 offsetof(CPUCRISState, btarget),
3461 "btarget");
3462 env_btaken = tcg_global_mem_new(TCG_AREG0,
3463 offsetof(CPUCRISState, btaken),
3464 "btaken");
3465 for (i = 0; i < 16; i++) {
3466 cpu_R[i] = tcg_global_mem_new(TCG_AREG0,
3467 offsetof(CPUCRISState, regs[i]),
3468 regnames[i]);
3469 }
3470 for (i = 0; i < 16; i++) {
3471 cpu_PR[i] = tcg_global_mem_new(TCG_AREG0,
3472 offsetof(CPUCRISState, pregs[i]),
3473 pregnames[i]);
3474 }
3475 }
3476
3477 void restore_state_to_opc(CPUCRISState *env, TranslationBlock *tb, int pc_pos)
3478 {
3479 env->pc = tcg_ctx.gen_opc_pc[pc_pos];
3480 }
AR7 emulation for QEMU