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Respect length of watchpoints (Jan Kiszka)
[qemu/qemu-JZ.git] / target-cris / translate.c
blobac258a9deb667a4d302752a79993112eed2d6d3b
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, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22 /*
23 * FIXME:
24 * The condition code translation is in need of attention.
25 */
26
27 #include <stdarg.h>
28 #include <stdlib.h>
29 #include <stdio.h>
30 #include <string.h>
31 #include <inttypes.h>
32 #include <assert.h>
33
34 #include "cpu.h"
35 #include "exec-all.h"
36 #include "disas.h"
37 #include "tcg-op.h"
38 #include "helper.h"
39 #include "crisv32-decode.h"
40 #include "qemu-common.h"
41
42 #define GEN_HELPER 1
43 #include "helper.h"
44
45 #define DISAS_CRIS 0
46 #if DISAS_CRIS
47 #define DIS(x) if (loglevel & CPU_LOG_TB_IN_ASM) x
48 #else
49 #define DIS(x)
50 #endif
51
52 #define D(x)
53 #define BUG() (gen_BUG(dc, __FILE__, __LINE__))
54 #define BUG_ON(x) ({if (x) BUG();})
55
56 #define DISAS_SWI 5
57
58 /* Used by the decoder. */
59 #define EXTRACT_FIELD(src, start, end) \
60 (((src) >> start) & ((1 << (end - start + 1)) - 1))
61
62 #define CC_MASK_NZ 0xc
63 #define CC_MASK_NZV 0xe
64 #define CC_MASK_NZVC 0xf
65 #define CC_MASK_RNZV 0x10e
66
67 static TCGv_ptr cpu_env;
68 static TCGv cpu_R[16];
69 static TCGv cpu_PR[16];
70 static TCGv cc_x;
71 static TCGv cc_src;
72 static TCGv cc_dest;
73 static TCGv cc_result;
74 static TCGv cc_op;
75 static TCGv cc_size;
76 static TCGv cc_mask;
77
78 static TCGv env_btaken;
79 static TCGv env_btarget;
80 static TCGv env_pc;
81
82 #include "gen-icount.h"
83
84 /* This is the state at translation time. */
85 typedef struct DisasContext {
86 CPUState *env;
87 target_ulong pc, ppc;
88
89 /* Decoder. */
90 uint32_t ir;
91 uint32_t opcode;
92 unsigned int op1;
93 unsigned int op2;
94 unsigned int zsize, zzsize;
95 unsigned int mode;
96 unsigned int postinc;
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 $ccs is uptodate. */
107 int flagx_known; /* Wether or not flags_x has the x flag known at
108 translation time. */
109 int flags_x;
110
111 int clear_x; /* Clear x after this insn? */
112 int cpustate_changed;
113 unsigned int tb_flags; /* tb dependent flags. */
114 int is_jmp;
115
116 #define JMP_NOJMP 0
117 #define JMP_DIRECT 1
118 #define JMP_INDIRECT 2
119 int jmp; /* 0=nojmp, 1=direct, 2=indirect. */
120 uint32_t jmp_pc;
121
122 int delayed_branch;
123
124 struct TranslationBlock *tb;
125 int singlestep_enabled;
126 } DisasContext;
127
128 static void gen_BUG(DisasContext *dc, const char *file, int line)
129 {
130 printf ("BUG: pc=%x %s %d\n", dc->pc, file, line);
131 fprintf (logfile, "BUG: pc=%x %s %d\n", dc->pc, file, line);
132 cpu_abort(dc->env, "%s:%d\n", file, line);
133 }
134
135 static const char *regnames[] =
136 {
137 "$r0", "$r1", "$r2", "$r3",
138 "$r4", "$r5", "$r6", "$r7",
139 "$r8", "$r9", "$r10", "$r11",
140 "$r12", "$r13", "$sp", "$acr",
141 };
142 static const char *pregnames[] =
143 {
144 "$bz", "$vr", "$pid", "$srs",
145 "$wz", "$exs", "$eda", "$mof",
146 "$dz", "$ebp", "$erp", "$srp",
147 "$nrp", "$ccs", "$usp", "$spc",
148 };
149
150 /* We need this table to handle preg-moves with implicit width. */
151 static int preg_sizes[] = {
152 1, /* bz. */
153 1, /* vr. */
154 4, /* pid. */
155 1, /* srs. */
156 2, /* wz. */
157 4, 4, 4,
158 4, 4, 4, 4,
159 4, 4, 4, 4,
160 };
161
162 #define t_gen_mov_TN_env(tn, member) \
163 _t_gen_mov_TN_env((tn), offsetof(CPUState, member))
164 #define t_gen_mov_env_TN(member, tn) \
165 _t_gen_mov_env_TN(offsetof(CPUState, member), (tn))
166
167 static inline void t_gen_mov_TN_reg(TCGv tn, int r)
168 {
169 if (r < 0 || r > 15)
170 fprintf(stderr, "wrong register read $r%d\n", r);
171 tcg_gen_mov_tl(tn, cpu_R[r]);
172 }
173 static inline void t_gen_mov_reg_TN(int r, TCGv tn)
174 {
175 if (r < 0 || r > 15)
176 fprintf(stderr, "wrong register write $r%d\n", r);
177 tcg_gen_mov_tl(cpu_R[r], tn);
178 }
179
180 static inline void _t_gen_mov_TN_env(TCGv tn, int offset)
181 {
182 if (offset > sizeof (CPUState))
183 fprintf(stderr, "wrong load from env from off=%d\n", offset);
184 tcg_gen_ld_tl(tn, cpu_env, offset);
185 }
186 static inline void _t_gen_mov_env_TN(int offset, TCGv tn)
187 {
188 if (offset > sizeof (CPUState))
189 fprintf(stderr, "wrong store to env at off=%d\n", offset);
190 tcg_gen_st_tl(tn, cpu_env, offset);
191 }
192
193 static inline void t_gen_mov_TN_preg(TCGv tn, int r)
194 {
195 if (r < 0 || r > 15)
196 fprintf(stderr, "wrong register read $p%d\n", r);
197 if (r == PR_BZ || r == PR_WZ || r == PR_DZ)
198 tcg_gen_mov_tl(tn, tcg_const_tl(0));
199 else if (r == PR_VR)
200 tcg_gen_mov_tl(tn, tcg_const_tl(32));
201 else if (r == PR_EDA) {
202 printf("read from EDA!\n");
203 tcg_gen_mov_tl(tn, cpu_PR[r]);
204 }
205 else
206 tcg_gen_mov_tl(tn, cpu_PR[r]);
207 }
208 static inline void t_gen_mov_preg_TN(DisasContext *dc, int r, TCGv tn)
209 {
210 if (r < 0 || r > 15)
211 fprintf(stderr, "wrong register write $p%d\n", r);
212 if (r == PR_BZ || r == PR_WZ || r == PR_DZ)
213 return;
214 else if (r == PR_SRS)
215 tcg_gen_andi_tl(cpu_PR[r], tn, 3);
216 else {
217 if (r == PR_PID)
218 gen_helper_tlb_flush_pid(tn);
219 if (dc->tb_flags & S_FLAG && r == PR_SPC)
220 gen_helper_spc_write(tn);
221 else if (r == PR_CCS)
222 dc->cpustate_changed = 1;
223 tcg_gen_mov_tl(cpu_PR[r], tn);
224 }
225 }
226
227 static inline void t_gen_raise_exception(uint32_t index)
228 {
229 TCGv_i32 tmp = tcg_const_i32(index);
230 gen_helper_raise_exception(tmp);
231 tcg_temp_free_i32(tmp);
232 }
233
234 static void t_gen_lsl(TCGv d, TCGv a, TCGv b)
235 {
236 TCGv t0, t_31;
237
238 t0 = tcg_temp_new();
239 t_31 = tcg_const_tl(31);
240 tcg_gen_shl_tl(d, a, b);
241
242 tcg_gen_sub_tl(t0, t_31, b);
243 tcg_gen_sar_tl(t0, t0, t_31);
244 tcg_gen_and_tl(t0, t0, d);
245 tcg_gen_xor_tl(d, d, t0);
246 tcg_temp_free(t0);
247 tcg_temp_free(t_31);
248 }
249
250 static void t_gen_lsr(TCGv d, TCGv a, TCGv b)
251 {
252 TCGv t0, t_31;
253
254 t0 = tcg_temp_new();
255 t_31 = tcg_temp_new();
256 tcg_gen_shr_tl(d, a, b);
257
258 tcg_gen_movi_tl(t_31, 31);
259 tcg_gen_sub_tl(t0, t_31, b);
260 tcg_gen_sar_tl(t0, t0, t_31);
261 tcg_gen_and_tl(t0, t0, d);
262 tcg_gen_xor_tl(d, d, t0);
263 tcg_temp_free(t0);
264 tcg_temp_free(t_31);
265 }
266
267 static void t_gen_asr(TCGv d, TCGv a, TCGv b)
268 {
269 TCGv t0, t_31;
270
271 t0 = tcg_temp_new();
272 t_31 = tcg_temp_new();
273 tcg_gen_sar_tl(d, a, b);
274
275 tcg_gen_movi_tl(t_31, 31);
276 tcg_gen_sub_tl(t0, t_31, b);
277 tcg_gen_sar_tl(t0, t0, t_31);
278 tcg_gen_or_tl(d, d, t0);
279 tcg_temp_free(t0);
280 tcg_temp_free(t_31);
281 }
282
283 /* 64-bit signed mul, lower result in d and upper in d2. */
284 static void t_gen_muls(TCGv d, TCGv d2, TCGv a, TCGv b)
285 {
286 TCGv_i64 t0, t1;
287
288 t0 = tcg_temp_new_i64();
289 t1 = tcg_temp_new_i64();
290
291 tcg_gen_ext_i32_i64(t0, a);
292 tcg_gen_ext_i32_i64(t1, b);
293 tcg_gen_mul_i64(t0, t0, t1);
294
295 tcg_gen_trunc_i64_i32(d, t0);
296 tcg_gen_shri_i64(t0, t0, 32);
297 tcg_gen_trunc_i64_i32(d2, t0);
298
299 tcg_temp_free_i64(t0);
300 tcg_temp_free_i64(t1);
301 }
302
303 /* 64-bit unsigned muls, lower result in d and upper in d2. */
304 static void t_gen_mulu(TCGv d, TCGv d2, TCGv a, TCGv b)
305 {
306 TCGv_i64 t0, t1;
307
308 t0 = tcg_temp_new_i64();
309 t1 = tcg_temp_new_i64();
310
311 tcg_gen_extu_i32_i64(t0, a);
312 tcg_gen_extu_i32_i64(t1, b);
313 tcg_gen_mul_i64(t0, t0, t1);
314
315 tcg_gen_trunc_i64_i32(d, t0);
316 tcg_gen_shri_i64(t0, t0, 32);
317 tcg_gen_trunc_i64_i32(d2, t0);
318
319 tcg_temp_free_i64(t0);
320 tcg_temp_free_i64(t1);
321 }
322
323 /* 32bit branch-free binary search for counting leading zeros. */
324 static void t_gen_lz_i32(TCGv d, TCGv x)
325 {
326 TCGv_i32 y, m, n;
327
328 y = tcg_temp_new_i32();
329 m = tcg_temp_new_i32();
330 n = tcg_temp_new_i32();
331
332 /* y = -(x >> 16) */
333 tcg_gen_shri_i32(y, x, 16);
334 tcg_gen_neg_i32(y, y);
335
336 /* m = (y >> 16) & 16 */
337 tcg_gen_sari_i32(m, y, 16);
338 tcg_gen_andi_i32(m, m, 16);
339
340 /* n = 16 - m */
341 tcg_gen_sub_i32(n, tcg_const_i32(16), m);
342 /* x = x >> m */
343 tcg_gen_shr_i32(x, x, m);
344
345 /* y = x - 0x100 */
346 tcg_gen_subi_i32(y, x, 0x100);
347 /* m = (y >> 16) & 8 */
348 tcg_gen_sari_i32(m, y, 16);
349 tcg_gen_andi_i32(m, m, 8);
350 /* n = n + m */
351 tcg_gen_add_i32(n, n, m);
352 /* x = x << m */
353 tcg_gen_shl_i32(x, x, m);
354
355 /* y = x - 0x1000 */
356 tcg_gen_subi_i32(y, x, 0x1000);
357 /* m = (y >> 16) & 4 */
358 tcg_gen_sari_i32(m, y, 16);
359 tcg_gen_andi_i32(m, m, 4);
360 /* n = n + m */
361 tcg_gen_add_i32(n, n, m);
362 /* x = x << m */
363 tcg_gen_shl_i32(x, x, m);
364
365 /* y = x - 0x4000 */
366 tcg_gen_subi_i32(y, x, 0x4000);
367 /* m = (y >> 16) & 2 */
368 tcg_gen_sari_i32(m, y, 16);
369 tcg_gen_andi_i32(m, m, 2);
370 /* n = n + m */
371 tcg_gen_add_i32(n, n, m);
372 /* x = x << m */
373 tcg_gen_shl_i32(x, x, m);
374
375 /* y = x >> 14 */
376 tcg_gen_shri_i32(y, x, 14);
377 /* m = y & ~(y >> 1) */
378 tcg_gen_sari_i32(m, y, 1);
379 tcg_gen_not_i32(m, m);
380 tcg_gen_and_i32(m, m, y);
381
382 /* d = n + 2 - m */
383 tcg_gen_addi_i32(d, n, 2);
384 tcg_gen_sub_i32(d, d, m);
385
386 tcg_temp_free(y);
387 tcg_temp_free(m);
388 tcg_temp_free(n);
389 }
390
391 static void t_gen_btst(TCGv d, TCGv a, TCGv b)
392 {
393 TCGv sbit;
394 TCGv bset;
395 TCGv t0;
396 int l1;
397
398 /* des ref:
399 The N flag is set according to the selected bit in the dest reg.
400 The Z flag is set if the selected bit and all bits to the right are
401 zero.
402 The X flag is cleared.
403 Other flags are left untouched.
404 The destination reg is not affected.
405
406 unsigned int fz, sbit, bset, mask, masked_t0;
407
408 sbit = T1 & 31;
409 bset = !!(T0 & (1 << sbit));
410 mask = sbit == 31 ? -1 : (1 << (sbit + 1)) - 1;
411 masked_t0 = T0 & mask;
412 fz = !(masked_t0 | bset);
413
414 // Clear the X, N and Z flags.
415 T0 = env->pregs[PR_CCS] & ~(X_FLAG | N_FLAG | Z_FLAG);
416 // Set the N and Z flags accordingly.
417 T0 |= (bset << 3) | (fz << 2);
418 */
419
420 l1 = gen_new_label();
421 sbit = tcg_temp_new();
422 bset = tcg_temp_new();
423 t0 = tcg_temp_new();
424
425 /* Compute bset and sbit. */
426 tcg_gen_andi_tl(sbit, b, 31);
427 tcg_gen_shl_tl(t0, tcg_const_tl(1), sbit);
428 tcg_gen_and_tl(bset, a, t0);
429 tcg_gen_shr_tl(bset, bset, sbit);
430 /* Displace to N_FLAG. */
431 tcg_gen_shli_tl(bset, bset, 3);
432
433 tcg_gen_shl_tl(sbit, tcg_const_tl(2), sbit);
434 tcg_gen_subi_tl(sbit, sbit, 1);
435 tcg_gen_and_tl(sbit, a, sbit);
436
437 tcg_gen_andi_tl(d, cpu_PR[PR_CCS], ~(X_FLAG | N_FLAG | Z_FLAG));
438 /* or in the N_FLAG. */
439 tcg_gen_or_tl(d, d, bset);
440 tcg_gen_brcondi_tl(TCG_COND_NE, sbit, 0, l1);
441 /* or in the Z_FLAG. */
442 tcg_gen_ori_tl(d, d, Z_FLAG);
443 gen_set_label(l1);
444
445 tcg_temp_free(sbit);
446 tcg_temp_free(bset);
447 }
448
449 static void t_gen_cris_dstep(TCGv d, TCGv a, TCGv b)
450 {
451 int l1;
452
453 l1 = gen_new_label();
454
455 /*
456 * d <<= 1
457 * if (d >= s)
458 * d -= s;
459 */
460 tcg_gen_shli_tl(d, a, 1);
461 tcg_gen_brcond_tl(TCG_COND_LTU, d, b, l1);
462 tcg_gen_sub_tl(d, d, b);
463 gen_set_label(l1);
464 }
465
466 /* Extended arithmetics on CRIS. */
467 static inline void t_gen_add_flag(TCGv d, int flag)
468 {
469 TCGv c;
470
471 c = tcg_temp_new();
472 t_gen_mov_TN_preg(c, PR_CCS);
473 /* Propagate carry into d. */
474 tcg_gen_andi_tl(c, c, 1 << flag);
475 if (flag)
476 tcg_gen_shri_tl(c, c, flag);
477 tcg_gen_add_tl(d, d, c);
478 tcg_temp_free(c);
479 }
480
481 static inline void t_gen_addx_carry(DisasContext *dc, TCGv d)
482 {
483 if (dc->flagx_known) {
484 if (dc->flags_x) {
485 TCGv c;
486
487 c = tcg_temp_new();
488 t_gen_mov_TN_preg(c, PR_CCS);
489 /* C flag is already at bit 0. */
490 tcg_gen_andi_tl(c, c, C_FLAG);
491 tcg_gen_add_tl(d, d, c);
492 tcg_temp_free(c);
493 }
494 } else {
495 TCGv x, c;
496
497 x = tcg_temp_new();
498 c = tcg_temp_new();
499 t_gen_mov_TN_preg(x, PR_CCS);
500 tcg_gen_mov_tl(c, x);
501
502 /* Propagate carry into d if X is set. Branch free. */
503 tcg_gen_andi_tl(c, c, C_FLAG);
504 tcg_gen_andi_tl(x, x, X_FLAG);
505 tcg_gen_shri_tl(x, x, 4);
506
507 tcg_gen_and_tl(x, x, c);
508 tcg_gen_add_tl(d, d, x);
509 tcg_temp_free(x);
510 tcg_temp_free(c);
511 }
512 }
513
514 static inline void t_gen_subx_carry(DisasContext *dc, TCGv d)
515 {
516 if (dc->flagx_known) {
517 if (dc->flags_x) {
518 TCGv c;
519
520 c = tcg_temp_new();
521 t_gen_mov_TN_preg(c, PR_CCS);
522 /* C flag is already at bit 0. */
523 tcg_gen_andi_tl(c, c, C_FLAG);
524 tcg_gen_sub_tl(d, d, c);
525 tcg_temp_free(c);
526 }
527 } else {
528 TCGv x, c;
529
530 x = tcg_temp_new();
531 c = tcg_temp_new();
532 t_gen_mov_TN_preg(x, PR_CCS);
533 tcg_gen_mov_tl(c, x);
534
535 /* Propagate carry into d if X is set. Branch free. */
536 tcg_gen_andi_tl(c, c, C_FLAG);
537 tcg_gen_andi_tl(x, x, X_FLAG);
538 tcg_gen_shri_tl(x, x, 4);
539
540 tcg_gen_and_tl(x, x, c);
541 tcg_gen_sub_tl(d, d, x);
542 tcg_temp_free(x);
543 tcg_temp_free(c);
544 }
545 }
546
547 /* Swap the two bytes within each half word of the s operand.
548 T0 = ((T0 << 8) & 0xff00ff00) | ((T0 >> 8) & 0x00ff00ff) */
549 static inline void t_gen_swapb(TCGv d, TCGv s)
550 {
551 TCGv t, org_s;
552
553 t = tcg_temp_new();
554 org_s = tcg_temp_new();
555
556 /* d and s may refer to the same object. */
557 tcg_gen_mov_tl(org_s, s);
558 tcg_gen_shli_tl(t, org_s, 8);
559 tcg_gen_andi_tl(d, t, 0xff00ff00);
560 tcg_gen_shri_tl(t, org_s, 8);
561 tcg_gen_andi_tl(t, t, 0x00ff00ff);
562 tcg_gen_or_tl(d, d, t);
563 tcg_temp_free(t);
564 tcg_temp_free(org_s);
565 }
566
567 /* Swap the halfwords of the s operand. */
568 static inline void t_gen_swapw(TCGv d, TCGv s)
569 {
570 TCGv t;
571 /* d and s refer the same object. */
572 t = tcg_temp_new();
573 tcg_gen_mov_tl(t, s);
574 tcg_gen_shli_tl(d, t, 16);
575 tcg_gen_shri_tl(t, t, 16);
576 tcg_gen_or_tl(d, d, t);
577 tcg_temp_free(t);
578 }
579
580 /* Reverse the within each byte.
581 T0 = (((T0 << 7) & 0x80808080) |
582 ((T0 << 5) & 0x40404040) |
583 ((T0 << 3) & 0x20202020) |
584 ((T0 << 1) & 0x10101010) |
585 ((T0 >> 1) & 0x08080808) |
586 ((T0 >> 3) & 0x04040404) |
587 ((T0 >> 5) & 0x02020202) |
588 ((T0 >> 7) & 0x01010101));
589 */
590 static inline void t_gen_swapr(TCGv d, TCGv s)
591 {
592 struct {
593 int shift; /* LSL when positive, LSR when negative. */
594 uint32_t mask;
595 } bitrev [] = {
596 {7, 0x80808080},
597 {5, 0x40404040},
598 {3, 0x20202020},
599 {1, 0x10101010},
600 {-1, 0x08080808},
601 {-3, 0x04040404},
602 {-5, 0x02020202},
603 {-7, 0x01010101}
604 };
605 int i;
606 TCGv t, org_s;
607
608 /* d and s refer the same object. */
609 t = tcg_temp_new();
610 org_s = tcg_temp_new();
611 tcg_gen_mov_tl(org_s, s);
612
613 tcg_gen_shli_tl(t, org_s, bitrev[0].shift);
614 tcg_gen_andi_tl(d, t, bitrev[0].mask);
615 for (i = 1; i < sizeof bitrev / sizeof bitrev[0]; i++) {
616 if (bitrev[i].shift >= 0) {
617 tcg_gen_shli_tl(t, org_s, bitrev[i].shift);
618 } else {
619 tcg_gen_shri_tl(t, org_s, -bitrev[i].shift);
620 }
621 tcg_gen_andi_tl(t, t, bitrev[i].mask);
622 tcg_gen_or_tl(d, d, t);
623 }
624 tcg_temp_free(t);
625 tcg_temp_free(org_s);
626 }
627
628 static void t_gen_cc_jmp(TCGv pc_true, TCGv pc_false)
629 {
630 TCGv btaken;
631 int l1;
632
633 l1 = gen_new_label();
634 btaken = tcg_temp_new();
635
636 /* Conditional jmp. */
637 tcg_gen_mov_tl(btaken, env_btaken);
638 tcg_gen_mov_tl(env_pc, pc_false);
639 tcg_gen_brcondi_tl(TCG_COND_EQ, btaken, 0, l1);
640 tcg_gen_mov_tl(env_pc, pc_true);
641 gen_set_label(l1);
642
643 tcg_temp_free(btaken);
644 }
645
646 static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest)
647 {
648 TranslationBlock *tb;
649 tb = dc->tb;
650 if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) {
651 tcg_gen_goto_tb(n);
652 tcg_gen_movi_tl(env_pc, dest);
653 tcg_gen_exit_tb((long)tb + n);
654 } else {
655 tcg_gen_movi_tl(env_pc, dest);
656 tcg_gen_exit_tb(0);
657 }
658 }
659
660 /* Sign extend at translation time. */
661 static int sign_extend(unsigned int val, unsigned int width)
662 {
663 int sval;
664
665 /* LSL. */
666 val <<= 31 - width;
667 sval = val;
668 /* ASR. */
669 sval >>= 31 - width;
670 return sval;
671 }
672
673 static inline void cris_clear_x_flag(DisasContext *dc)
674 {
675 if (dc->flagx_known && dc->flags_x)
676 dc->flags_uptodate = 0;
677
678 dc->flagx_known = 1;
679 dc->flags_x = 0;
680 }
681
682 static void cris_flush_cc_state(DisasContext *dc)
683 {
684 if (dc->cc_size_uptodate != dc->cc_size) {
685 tcg_gen_movi_tl(cc_size, dc->cc_size);
686 dc->cc_size_uptodate = dc->cc_size;
687 }
688 tcg_gen_movi_tl(cc_op, dc->cc_op);
689 tcg_gen_movi_tl(cc_mask, dc->cc_mask);
690 }
691
692 static void cris_evaluate_flags(DisasContext *dc)
693 {
694 if (!dc->flags_uptodate) {
695 cris_flush_cc_state(dc);
696
697 switch (dc->cc_op)
698 {
699 case CC_OP_MCP:
700 gen_helper_evaluate_flags_mcp();
701 break;
702 case CC_OP_MULS:
703 gen_helper_evaluate_flags_muls();
704 break;
705 case CC_OP_MULU:
706 gen_helper_evaluate_flags_mulu();
707 break;
708 case CC_OP_MOVE:
709 case CC_OP_AND:
710 case CC_OP_OR:
711 case CC_OP_XOR:
712 case CC_OP_ASR:
713 case CC_OP_LSR:
714 case CC_OP_LSL:
715 switch (dc->cc_size)
716 {
717 case 4:
718 gen_helper_evaluate_flags_move_4();
719 break;
720 case 2:
721 gen_helper_evaluate_flags_move_2();
722 break;
723 default:
724 gen_helper_evaluate_flags();
725 break;
726 }
727 break;
728 case CC_OP_FLAGS:
729 /* live. */
730 break;
731 default:
732 {
733 switch (dc->cc_size)
734 {
735 case 4:
736 gen_helper_evaluate_flags_alu_4();
737 break;
738 default:
739 gen_helper_evaluate_flags();
740 break;
741 }
742 }
743 break;
744 }
745 if (dc->flagx_known) {
746 if (dc->flags_x)
747 tcg_gen_ori_tl(cpu_PR[PR_CCS],
748 cpu_PR[PR_CCS], X_FLAG);
749 else
750 tcg_gen_andi_tl(cpu_PR[PR_CCS],
751 cpu_PR[PR_CCS], ~X_FLAG);
752 }
753
754 dc->flags_uptodate = 1;
755 }
756 }
757
758 static void cris_cc_mask(DisasContext *dc, unsigned int mask)
759 {
760 uint32_t ovl;
761
762 if (!mask) {
763 dc->update_cc = 0;
764 return;
765 }
766
767 /* Check if we need to evaluate the condition codes due to
768 CC overlaying. */
769 ovl = (dc->cc_mask ^ mask) & ~mask;
770 if (ovl) {
771 /* TODO: optimize this case. It trigs all the time. */
772 cris_evaluate_flags (dc);
773 }
774 dc->cc_mask = mask;
775 dc->update_cc = 1;
776 }
777
778 static void cris_update_cc_op(DisasContext *dc, int op, int size)
779 {
780 dc->cc_op = op;
781 dc->cc_size = size;
782 dc->flags_uptodate = 0;
783 }
784
785 static inline void cris_update_cc_x(DisasContext *dc)
786 {
787 /* Save the x flag state at the time of the cc snapshot. */
788 if (dc->flagx_known) {
789 if (dc->cc_x_uptodate == (2 | dc->flags_x))
790 return;
791 tcg_gen_movi_tl(cc_x, dc->flags_x);
792 dc->cc_x_uptodate = 2 | dc->flags_x;
793 }
794 else {
795 tcg_gen_andi_tl(cc_x, cpu_PR[PR_CCS], X_FLAG);
796 dc->cc_x_uptodate = 1;
797 }
798 }
799
800 /* Update cc prior to executing ALU op. Needs source operands untouched. */
801 static void cris_pre_alu_update_cc(DisasContext *dc, int op,
802 TCGv dst, TCGv src, int size)
803 {
804 if (dc->update_cc) {
805 cris_update_cc_op(dc, op, size);
806 tcg_gen_mov_tl(cc_src, src);
807
808 if (op != CC_OP_MOVE
809 && op != CC_OP_AND
810 && op != CC_OP_OR
811 && op != CC_OP_XOR
812 && op != CC_OP_ASR
813 && op != CC_OP_LSR
814 && op != CC_OP_LSL)
815 tcg_gen_mov_tl(cc_dest, dst);
816
817 cris_update_cc_x(dc);
818 }
819 }
820
821 /* Update cc after executing ALU op. needs the result. */
822 static inline void cris_update_result(DisasContext *dc, TCGv res)
823 {
824 if (dc->update_cc) {
825 if (dc->cc_size == 4 &&
826 (dc->cc_op == CC_OP_SUB
827 || dc->cc_op == CC_OP_ADD))
828 return;
829 tcg_gen_mov_tl(cc_result, res);
830 }
831 }
832
833 /* Returns one if the write back stage should execute. */
834 static void cris_alu_op_exec(DisasContext *dc, int op,
835 TCGv dst, TCGv a, TCGv b, int size)
836 {
837 /* Emit the ALU insns. */
838 switch (op)
839 {
840 case CC_OP_ADD:
841 tcg_gen_add_tl(dst, a, b);
842 /* Extended arithmetics. */
843 t_gen_addx_carry(dc, dst);
844 break;
845 case CC_OP_ADDC:
846 tcg_gen_add_tl(dst, a, b);
847 t_gen_add_flag(dst, 0); /* C_FLAG. */
848 break;
849 case CC_OP_MCP:
850 tcg_gen_add_tl(dst, a, b);
851 t_gen_add_flag(dst, 8); /* R_FLAG. */
852 break;
853 case CC_OP_SUB:
854 tcg_gen_sub_tl(dst, a, b);
855 /* Extended arithmetics. */
856 t_gen_subx_carry(dc, dst);
857 break;
858 case CC_OP_MOVE:
859 tcg_gen_mov_tl(dst, b);
860 break;
861 case CC_OP_OR:
862 tcg_gen_or_tl(dst, a, b);
863 break;
864 case CC_OP_AND:
865 tcg_gen_and_tl(dst, a, b);
866 break;
867 case CC_OP_XOR:
868 tcg_gen_xor_tl(dst, a, b);
869 break;
870 case CC_OP_LSL:
871 t_gen_lsl(dst, a, b);
872 break;
873 case CC_OP_LSR:
874 t_gen_lsr(dst, a, b);
875 break;
876 case CC_OP_ASR:
877 t_gen_asr(dst, a, b);
878 break;
879 case CC_OP_NEG:
880 tcg_gen_neg_tl(dst, b);
881 /* Extended arithmetics. */
882 t_gen_subx_carry(dc, dst);
883 break;
884 case CC_OP_LZ:
885 t_gen_lz_i32(dst, b);
886 break;
887 case CC_OP_BTST:
888 t_gen_btst(dst, a, b);
889 break;
890 case CC_OP_MULS:
891 t_gen_muls(dst, cpu_PR[PR_MOF], a, b);
892 break;
893 case CC_OP_MULU:
894 t_gen_mulu(dst, cpu_PR[PR_MOF], a, b);
895 break;
896 case CC_OP_DSTEP:
897 t_gen_cris_dstep(dst, a, b);
898 break;
899 case CC_OP_BOUND:
900 {
901 int l1;
902 l1 = gen_new_label();
903 tcg_gen_mov_tl(dst, a);
904 tcg_gen_brcond_tl(TCG_COND_LEU, a, b, l1);
905 tcg_gen_mov_tl(dst, b);
906 gen_set_label(l1);
907 }
908 break;
909 case CC_OP_CMP:
910 tcg_gen_sub_tl(dst, a, b);
911 /* Extended arithmetics. */
912 t_gen_subx_carry(dc, dst);
913 break;
914 default:
915 fprintf (logfile, "illegal ALU op.\n");
916 BUG();
917 break;
918 }
919
920 if (size == 1)
921 tcg_gen_andi_tl(dst, dst, 0xff);
922 else if (size == 2)
923 tcg_gen_andi_tl(dst, dst, 0xffff);
924 }
925
926 static void cris_alu(DisasContext *dc, int op,
927 TCGv d, TCGv op_a, TCGv op_b, int size)
928 {
929 TCGv tmp;
930 int writeback;
931
932 writeback = 1;
933
934 if (op == CC_OP_BOUND || op == CC_OP_BTST)
935 tmp = tcg_temp_local_new();
936
937 if (op == CC_OP_CMP) {
938 tmp = tcg_temp_new();
939 writeback = 0;
940 } else if (size == 4) {
941 tmp = d;
942 writeback = 0;
943 } else
944 tmp = tcg_temp_new();
945
946
947 cris_pre_alu_update_cc(dc, op, op_a, op_b, size);
948 cris_alu_op_exec(dc, op, tmp, op_a, op_b, size);
949 cris_update_result(dc, tmp);
950
951 /* Writeback. */
952 if (writeback) {
953 if (size == 1)
954 tcg_gen_andi_tl(d, d, ~0xff);
955 else
956 tcg_gen_andi_tl(d, d, ~0xffff);
957 tcg_gen_or_tl(d, d, tmp);
958 }
959 if (!TCGV_EQUAL(tmp, d))
960 tcg_temp_free(tmp);
961 }
962
963 static int arith_cc(DisasContext *dc)
964 {
965 if (dc->update_cc) {
966 switch (dc->cc_op) {
967 case CC_OP_ADDC: return 1;
968 case CC_OP_ADD: return 1;
969 case CC_OP_SUB: return 1;
970 case CC_OP_DSTEP: return 1;
971 case CC_OP_LSL: return 1;
972 case CC_OP_LSR: return 1;
973 case CC_OP_ASR: return 1;
974 case CC_OP_CMP: return 1;
975 case CC_OP_NEG: return 1;
976 case CC_OP_OR: return 1;
977 case CC_OP_XOR: return 1;
978 case CC_OP_MULU: return 1;
979 case CC_OP_MULS: return 1;
980 default:
981 return 0;
982 }
983 }
984 return 0;
985 }
986
987 static void gen_tst_cc (DisasContext *dc, TCGv cc, int cond)
988 {
989 int arith_opt, move_opt;
990
991 /* TODO: optimize more condition codes. */
992
993 /*
994 * If the flags are live, we've gotta look into the bits of CCS.
995 * Otherwise, if we just did an arithmetic operation we try to
996 * evaluate the condition code faster.
997 *
998 * When this function is done, T0 should be non-zero if the condition
999 * code is true.
1000 */
1001 arith_opt = arith_cc(dc) && !dc->flags_uptodate;
1002 move_opt = (dc->cc_op == CC_OP_MOVE) && dc->flags_uptodate;
1003 switch (cond) {
1004 case CC_EQ:
1005 if (arith_opt || move_opt) {
1006 /* If cc_result is zero, T0 should be
1007 non-zero otherwise T0 should be zero. */
1008 int l1;
1009 l1 = gen_new_label();
1010 tcg_gen_movi_tl(cc, 0);
1011 tcg_gen_brcondi_tl(TCG_COND_NE, cc_result,
1012 0, l1);
1013 tcg_gen_movi_tl(cc, 1);
1014 gen_set_label(l1);
1015 }
1016 else {
1017 cris_evaluate_flags(dc);
1018 tcg_gen_andi_tl(cc,
1019 cpu_PR[PR_CCS], Z_FLAG);
1020 }
1021 break;
1022 case CC_NE:
1023 if (arith_opt || move_opt)
1024 tcg_gen_mov_tl(cc, cc_result);
1025 else {
1026 cris_evaluate_flags(dc);
1027 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
1028 Z_FLAG);
1029 tcg_gen_andi_tl(cc, cc, Z_FLAG);
1030 }
1031 break;
1032 case CC_CS:
1033 cris_evaluate_flags(dc);
1034 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], C_FLAG);
1035 break;
1036 case CC_CC:
1037 cris_evaluate_flags(dc);
1038 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], C_FLAG);
1039 tcg_gen_andi_tl(cc, cc, C_FLAG);
1040 break;
1041 case CC_VS:
1042 cris_evaluate_flags(dc);
1043 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], V_FLAG);
1044 break;
1045 case CC_VC:
1046 cris_evaluate_flags(dc);
1047 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
1048 V_FLAG);
1049 tcg_gen_andi_tl(cc, cc, V_FLAG);
1050 break;
1051 case CC_PL:
1052 if (arith_opt || move_opt) {
1053 int bits = 31;
1054
1055 if (dc->cc_size == 1)
1056 bits = 7;
1057 else if (dc->cc_size == 2)
1058 bits = 15;
1059
1060 tcg_gen_shri_tl(cc, cc_result, bits);
1061 tcg_gen_xori_tl(cc, cc, 1);
1062 } else {
1063 cris_evaluate_flags(dc);
1064 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
1065 N_FLAG);
1066 tcg_gen_andi_tl(cc, cc, N_FLAG);
1067 }
1068 break;
1069 case CC_MI:
1070 if (arith_opt || move_opt) {
1071 int bits = 31;
1072
1073 if (dc->cc_size == 1)
1074 bits = 7;
1075 else if (dc->cc_size == 2)
1076 bits = 15;
1077
1078 tcg_gen_shri_tl(cc, cc_result, 31);
1079 }
1080 else {
1081 cris_evaluate_flags(dc);
1082 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS],
1083 N_FLAG);
1084 }
1085 break;
1086 case CC_LS:
1087 cris_evaluate_flags(dc);
1088 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS],
1089 C_FLAG | Z_FLAG);
1090 break;
1091 case CC_HI:
1092 cris_evaluate_flags(dc);
1093 {
1094 TCGv tmp;
1095
1096 tmp = tcg_temp_new();
1097 tcg_gen_xori_tl(tmp, cpu_PR[PR_CCS],
1098 C_FLAG | Z_FLAG);
1099 /* Overlay the C flag on top of the Z. */
1100 tcg_gen_shli_tl(cc, tmp, 2);
1101 tcg_gen_and_tl(cc, tmp, cc);
1102 tcg_gen_andi_tl(cc, cc, Z_FLAG);
1103
1104 tcg_temp_free(tmp);
1105 }
1106 break;
1107 case CC_GE:
1108 cris_evaluate_flags(dc);
1109 /* Overlay the V flag on top of the N. */
1110 tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2);
1111 tcg_gen_xor_tl(cc,
1112 cpu_PR[PR_CCS], cc);
1113 tcg_gen_andi_tl(cc, cc, N_FLAG);
1114 tcg_gen_xori_tl(cc, cc, N_FLAG);
1115 break;
1116 case CC_LT:
1117 cris_evaluate_flags(dc);
1118 /* Overlay the V flag on top of the N. */
1119 tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2);
1120 tcg_gen_xor_tl(cc,
1121 cpu_PR[PR_CCS], cc);
1122 tcg_gen_andi_tl(cc, cc, N_FLAG);
1123 break;
1124 case CC_GT:
1125 cris_evaluate_flags(dc);
1126 {
1127 TCGv n, z;
1128
1129 n = tcg_temp_new();
1130 z = tcg_temp_new();
1131
1132 /* To avoid a shift we overlay everything on
1133 the V flag. */
1134 tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2);
1135 tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1);
1136 /* invert Z. */
1137 tcg_gen_xori_tl(z, z, 2);
1138
1139 tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]);
1140 tcg_gen_xori_tl(n, n, 2);
1141 tcg_gen_and_tl(cc, z, n);
1142 tcg_gen_andi_tl(cc, cc, 2);
1143
1144 tcg_temp_free(n);
1145 tcg_temp_free(z);
1146 }
1147 break;
1148 case CC_LE:
1149 cris_evaluate_flags(dc);
1150 {
1151 TCGv n, z;
1152
1153 n = tcg_temp_new();
1154 z = tcg_temp_new();
1155
1156 /* To avoid a shift we overlay everything on
1157 the V flag. */
1158 tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2);
1159 tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1);
1160
1161 tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]);
1162 tcg_gen_or_tl(cc, z, n);
1163 tcg_gen_andi_tl(cc, cc, 2);
1164
1165 tcg_temp_free(n);
1166 tcg_temp_free(z);
1167 }
1168 break;
1169 case CC_P:
1170 cris_evaluate_flags(dc);
1171 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], P_FLAG);
1172 break;
1173 case CC_A:
1174 tcg_gen_movi_tl(cc, 1);
1175 break;
1176 default:
1177 BUG();
1178 break;
1179 };
1180 }
1181
1182 static void cris_store_direct_jmp(DisasContext *dc)
1183 {
1184 /* Store the direct jmp state into the cpu-state. */
1185 if (dc->jmp == JMP_DIRECT) {
1186 tcg_gen_movi_tl(env_btarget, dc->jmp_pc);
1187 tcg_gen_movi_tl(env_btaken, 1);
1188 }
1189 }
1190
1191 static void cris_prepare_cc_branch (DisasContext *dc,
1192 int offset, int cond)
1193 {
1194 /* This helps us re-schedule the micro-code to insns in delay-slots
1195 before the actual jump. */
1196 dc->delayed_branch = 2;
1197 dc->jmp_pc = dc->pc + offset;
1198
1199 if (cond != CC_A)
1200 {
1201 dc->jmp = JMP_INDIRECT;
1202 gen_tst_cc (dc, env_btaken, cond);
1203 tcg_gen_movi_tl(env_btarget, dc->jmp_pc);
1204 } else {
1205 /* Allow chaining. */
1206 dc->jmp = JMP_DIRECT;
1207 }
1208 }
1209
1210
1211 /* jumps, when the dest is in a live reg for example. Direct should be set
1212 when the dest addr is constant to allow tb chaining. */
1213 static inline void cris_prepare_jmp (DisasContext *dc, unsigned int type)
1214 {
1215 /* This helps us re-schedule the micro-code to insns in delay-slots
1216 before the actual jump. */
1217 dc->delayed_branch = 2;
1218 dc->jmp = type;
1219 if (type == JMP_INDIRECT)
1220 tcg_gen_movi_tl(env_btaken, 1);
1221 }
1222
1223 static void gen_load64(DisasContext *dc, TCGv_i64 dst, TCGv addr)
1224 {
1225 int mem_index = cpu_mmu_index(dc->env);
1226
1227 /* If we get a fault on a delayslot we must keep the jmp state in
1228 the cpu-state to be able to re-execute the jmp. */
1229 if (dc->delayed_branch == 1)
1230 cris_store_direct_jmp(dc);
1231
1232 tcg_gen_qemu_ld64(dst, addr, mem_index);
1233 }
1234
1235 static void gen_load(DisasContext *dc, TCGv dst, TCGv addr,
1236 unsigned int size, int sign)
1237 {
1238 int mem_index = cpu_mmu_index(dc->env);
1239
1240 /* If we get a fault on a delayslot we must keep the jmp state in
1241 the cpu-state to be able to re-execute the jmp. */
1242 if (dc->delayed_branch == 1)
1243 cris_store_direct_jmp(dc);
1244
1245 if (size == 1) {
1246 if (sign)
1247 tcg_gen_qemu_ld8s(dst, addr, mem_index);
1248 else
1249 tcg_gen_qemu_ld8u(dst, addr, mem_index);
1250 }
1251 else if (size == 2) {
1252 if (sign)
1253 tcg_gen_qemu_ld16s(dst, addr, mem_index);
1254 else
1255 tcg_gen_qemu_ld16u(dst, addr, mem_index);
1256 }
1257 else if (size == 4) {
1258 tcg_gen_qemu_ld32u(dst, addr, mem_index);
1259 }
1260 else {
1261 abort();
1262 }
1263 }
1264
1265 static void gen_store (DisasContext *dc, TCGv addr, TCGv val,
1266 unsigned int size)
1267 {
1268 int mem_index = cpu_mmu_index(dc->env);
1269
1270 /* If we get a fault on a delayslot we must keep the jmp state in
1271 the cpu-state to be able to re-execute the jmp. */
1272 if (dc->delayed_branch == 1)
1273 cris_store_direct_jmp(dc);
1274
1275
1276 /* Conditional writes. We only support the kind were X and P are known
1277 at translation time. */
1278 if (dc->flagx_known && dc->flags_x && (dc->tb_flags & P_FLAG)) {
1279 dc->postinc = 0;
1280 cris_evaluate_flags(dc);
1281 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], C_FLAG);
1282 return;
1283 }
1284
1285 if (size == 1)
1286 tcg_gen_qemu_st8(val, addr, mem_index);
1287 else if (size == 2)
1288 tcg_gen_qemu_st16(val, addr, mem_index);
1289 else
1290 tcg_gen_qemu_st32(val, addr, mem_index);
1291
1292 if (dc->flagx_known && dc->flags_x) {
1293 cris_evaluate_flags(dc);
1294 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~C_FLAG);
1295 }
1296 }
1297
1298 static inline void t_gen_sext(TCGv d, TCGv s, int size)
1299 {
1300 if (size == 1)
1301 tcg_gen_ext8s_i32(d, s);
1302 else if (size == 2)
1303 tcg_gen_ext16s_i32(d, s);
1304 else if(!TCGV_EQUAL(d, s))
1305 tcg_gen_mov_tl(d, s);
1306 }
1307
1308 static inline void t_gen_zext(TCGv d, TCGv s, int size)
1309 {
1310 if (size == 1)
1311 tcg_gen_ext8u_i32(d, s);
1312 else if (size == 2)
1313 tcg_gen_ext16u_i32(d, s);
1314 else if (!TCGV_EQUAL(d, s))
1315 tcg_gen_mov_tl(d, s);
1316 }
1317
1318 #if DISAS_CRIS
1319 static char memsize_char(int size)
1320 {
1321 switch (size)
1322 {
1323 case 1: return 'b'; break;
1324 case 2: return 'w'; break;
1325 case 4: return 'd'; break;
1326 default:
1327 return 'x';
1328 break;
1329 }
1330 }
1331 #endif
1332
1333 static inline unsigned int memsize_z(DisasContext *dc)
1334 {
1335 return dc->zsize + 1;
1336 }
1337
1338 static inline unsigned int memsize_zz(DisasContext *dc)
1339 {
1340 switch (dc->zzsize)
1341 {
1342 case 0: return 1;
1343 case 1: return 2;
1344 default:
1345 return 4;
1346 }
1347 }
1348
1349 static inline void do_postinc (DisasContext *dc, int size)
1350 {
1351 if (dc->postinc)
1352 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], size);
1353 }
1354
1355 static inline void dec_prep_move_r(DisasContext *dc, int rs, int rd,
1356 int size, int s_ext, TCGv dst)
1357 {
1358 if (s_ext)
1359 t_gen_sext(dst, cpu_R[rs], size);
1360 else
1361 t_gen_zext(dst, cpu_R[rs], size);
1362 }
1363
1364 /* Prepare T0 and T1 for a register alu operation.
1365 s_ext decides if the operand1 should be sign-extended or zero-extended when
1366 needed. */
1367 static void dec_prep_alu_r(DisasContext *dc, int rs, int rd,
1368 int size, int s_ext, TCGv dst, TCGv src)
1369 {
1370 dec_prep_move_r(dc, rs, rd, size, s_ext, src);
1371
1372 if (s_ext)
1373 t_gen_sext(dst, cpu_R[rd], size);
1374 else
1375 t_gen_zext(dst, cpu_R[rd], size);
1376 }
1377
1378 static int dec_prep_move_m(DisasContext *dc, int s_ext, int memsize,
1379 TCGv dst)
1380 {
1381 unsigned int rs, rd;
1382 uint32_t imm;
1383 int is_imm;
1384 int insn_len = 2;
1385
1386 rs = dc->op1;
1387 rd = dc->op2;
1388 is_imm = rs == 15 && dc->postinc;
1389
1390 /* Load [$rs] onto T1. */
1391 if (is_imm) {
1392 insn_len = 2 + memsize;
1393 if (memsize == 1)
1394 insn_len++;
1395
1396 if (memsize != 4) {
1397 if (s_ext) {
1398 if (memsize == 1)
1399 imm = ldsb_code(dc->pc + 2);
1400 else
1401 imm = ldsw_code(dc->pc + 2);
1402 } else {
1403 if (memsize == 1)
1404 imm = ldub_code(dc->pc + 2);
1405 else
1406 imm = lduw_code(dc->pc + 2);
1407 }
1408 } else
1409 imm = ldl_code(dc->pc + 2);
1410
1411 tcg_gen_movi_tl(dst, imm);
1412 dc->postinc = 0;
1413 } else {
1414 cris_flush_cc_state(dc);
1415 gen_load(dc, dst, cpu_R[rs], memsize, 0);
1416 if (s_ext)
1417 t_gen_sext(dst, dst, memsize);
1418 else
1419 t_gen_zext(dst, dst, memsize);
1420 }
1421 return insn_len;
1422 }
1423
1424 /* Prepare T0 and T1 for a memory + alu operation.
1425 s_ext decides if the operand1 should be sign-extended or zero-extended when
1426 needed. */
1427 static int dec_prep_alu_m(DisasContext *dc, int s_ext, int memsize,
1428 TCGv dst, TCGv src)
1429 {
1430 int insn_len;
1431
1432 insn_len = dec_prep_move_m(dc, s_ext, memsize, src);
1433 tcg_gen_mov_tl(dst, cpu_R[dc->op2]);
1434 return insn_len;
1435 }
1436
1437 #if DISAS_CRIS
1438 static const char *cc_name(int cc)
1439 {
1440 static const char *cc_names[16] = {
1441 "cc", "cs", "ne", "eq", "vc", "vs", "pl", "mi",
1442 "ls", "hi", "ge", "lt", "gt", "le", "a", "p"
1443 };
1444 assert(cc < 16);
1445 return cc_names[cc];
1446 }
1447 #endif
1448
1449 /* Start of insn decoders. */
1450
1451 static unsigned int dec_bccq(DisasContext *dc)
1452 {
1453 int32_t offset;
1454 int sign;
1455 uint32_t cond = dc->op2;
1456 int tmp;
1457
1458 offset = EXTRACT_FIELD (dc->ir, 1, 7);
1459 sign = EXTRACT_FIELD(dc->ir, 0, 0);
1460
1461 offset *= 2;
1462 offset |= sign << 8;
1463 tmp = offset;
1464 offset = sign_extend(offset, 8);
1465
1466 DIS(fprintf (logfile, "b%s %x\n", cc_name(cond), dc->pc + offset));
1467
1468 /* op2 holds the condition-code. */
1469 cris_cc_mask(dc, 0);
1470 cris_prepare_cc_branch (dc, offset, cond);
1471 return 2;
1472 }
1473 static unsigned int dec_addoq(DisasContext *dc)
1474 {
1475 int32_t imm;
1476
1477 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 7);
1478 imm = sign_extend(dc->op1, 7);
1479
1480 DIS(fprintf (logfile, "addoq %d, $r%u\n", imm, dc->op2));
1481 cris_cc_mask(dc, 0);
1482 /* Fetch register operand, */
1483 tcg_gen_addi_tl(cpu_R[R_ACR], cpu_R[dc->op2], imm);
1484
1485 return 2;
1486 }
1487 static unsigned int dec_addq(DisasContext *dc)
1488 {
1489 DIS(fprintf (logfile, "addq %u, $r%u\n", dc->op1, dc->op2));
1490
1491 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1492
1493 cris_cc_mask(dc, CC_MASK_NZVC);
1494
1495 cris_alu(dc, CC_OP_ADD,
1496 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
1497 return 2;
1498 }
1499 static unsigned int dec_moveq(DisasContext *dc)
1500 {
1501 uint32_t imm;
1502
1503 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1504 imm = sign_extend(dc->op1, 5);
1505 DIS(fprintf (logfile, "moveq %d, $r%u\n", imm, dc->op2));
1506
1507 tcg_gen_mov_tl(cpu_R[dc->op2], tcg_const_tl(imm));
1508 return 2;
1509 }
1510 static unsigned int dec_subq(DisasContext *dc)
1511 {
1512 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1513
1514 DIS(fprintf (logfile, "subq %u, $r%u\n", dc->op1, dc->op2));
1515
1516 cris_cc_mask(dc, CC_MASK_NZVC);
1517 cris_alu(dc, CC_OP_SUB,
1518 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
1519 return 2;
1520 }
1521 static unsigned int dec_cmpq(DisasContext *dc)
1522 {
1523 uint32_t imm;
1524 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1525 imm = sign_extend(dc->op1, 5);
1526
1527 DIS(fprintf (logfile, "cmpq %d, $r%d\n", imm, dc->op2));
1528 cris_cc_mask(dc, CC_MASK_NZVC);
1529
1530 cris_alu(dc, CC_OP_CMP,
1531 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
1532 return 2;
1533 }
1534 static unsigned int dec_andq(DisasContext *dc)
1535 {
1536 uint32_t imm;
1537 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1538 imm = sign_extend(dc->op1, 5);
1539
1540 DIS(fprintf (logfile, "andq %d, $r%d\n", imm, dc->op2));
1541 cris_cc_mask(dc, CC_MASK_NZ);
1542
1543 cris_alu(dc, CC_OP_AND,
1544 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
1545 return 2;
1546 }
1547 static unsigned int dec_orq(DisasContext *dc)
1548 {
1549 uint32_t imm;
1550 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1551 imm = sign_extend(dc->op1, 5);
1552 DIS(fprintf (logfile, "orq %d, $r%d\n", imm, dc->op2));
1553 cris_cc_mask(dc, CC_MASK_NZ);
1554
1555 cris_alu(dc, CC_OP_OR,
1556 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
1557 return 2;
1558 }
1559 static unsigned int dec_btstq(DisasContext *dc)
1560 {
1561 TCGv l0;
1562 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1563 DIS(fprintf (logfile, "btstq %u, $r%d\n", dc->op1, dc->op2));
1564
1565 cris_cc_mask(dc, CC_MASK_NZ);
1566 l0 = tcg_temp_local_new();
1567 cris_alu(dc, CC_OP_BTST,
1568 l0, cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
1569 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
1570 t_gen_mov_preg_TN(dc, PR_CCS, l0);
1571 dc->flags_uptodate = 1;
1572 tcg_temp_free(l0);
1573 return 2;
1574 }
1575 static unsigned int dec_asrq(DisasContext *dc)
1576 {
1577 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1578 DIS(fprintf (logfile, "asrq %u, $r%d\n", dc->op1, dc->op2));
1579 cris_cc_mask(dc, CC_MASK_NZ);
1580
1581 tcg_gen_sari_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1);
1582 cris_alu(dc, CC_OP_MOVE,
1583 cpu_R[dc->op2],
1584 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1585 return 2;
1586 }
1587 static unsigned int dec_lslq(DisasContext *dc)
1588 {
1589 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1590 DIS(fprintf (logfile, "lslq %u, $r%d\n", dc->op1, dc->op2));
1591
1592 cris_cc_mask(dc, CC_MASK_NZ);
1593
1594 tcg_gen_shli_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1);
1595
1596 cris_alu(dc, CC_OP_MOVE,
1597 cpu_R[dc->op2],
1598 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1599 return 2;
1600 }
1601 static unsigned int dec_lsrq(DisasContext *dc)
1602 {
1603 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1604 DIS(fprintf (logfile, "lsrq %u, $r%d\n", dc->op1, dc->op2));
1605
1606 cris_cc_mask(dc, CC_MASK_NZ);
1607
1608 tcg_gen_shri_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1);
1609 cris_alu(dc, CC_OP_MOVE,
1610 cpu_R[dc->op2],
1611 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1612 return 2;
1613 }
1614
1615 static unsigned int dec_move_r(DisasContext *dc)
1616 {
1617 int size = memsize_zz(dc);
1618
1619 DIS(fprintf (logfile, "move.%c $r%u, $r%u\n",
1620 memsize_char(size), dc->op1, dc->op2));
1621
1622 cris_cc_mask(dc, CC_MASK_NZ);
1623 if (size == 4) {
1624 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, cpu_R[dc->op2]);
1625 cris_cc_mask(dc, CC_MASK_NZ);
1626 cris_update_cc_op(dc, CC_OP_MOVE, 4);
1627 cris_update_cc_x(dc);
1628 cris_update_result(dc, cpu_R[dc->op2]);
1629 }
1630 else {
1631 TCGv t0;
1632
1633 t0 = tcg_temp_new();
1634 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0);
1635 cris_alu(dc, CC_OP_MOVE,
1636 cpu_R[dc->op2],
1637 cpu_R[dc->op2], t0, size);
1638 tcg_temp_free(t0);
1639 }
1640 return 2;
1641 }
1642
1643 static unsigned int dec_scc_r(DisasContext *dc)
1644 {
1645 int cond = dc->op2;
1646
1647 DIS(fprintf (logfile, "s%s $r%u\n",
1648 cc_name(cond), dc->op1));
1649
1650 if (cond != CC_A)
1651 {
1652 int l1;
1653
1654 gen_tst_cc (dc, cpu_R[dc->op1], cond);
1655 l1 = gen_new_label();
1656 tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_R[dc->op1], 0, l1);
1657 tcg_gen_movi_tl(cpu_R[dc->op1], 1);
1658 gen_set_label(l1);
1659 }
1660 else
1661 tcg_gen_movi_tl(cpu_R[dc->op1], 1);
1662
1663 cris_cc_mask(dc, 0);
1664 return 2;
1665 }
1666
1667 static inline void cris_alu_alloc_temps(DisasContext *dc, int size, TCGv *t)
1668 {
1669 if (size == 4) {
1670 t[0] = cpu_R[dc->op2];
1671 t[1] = cpu_R[dc->op1];
1672 } else {
1673 t[0] = tcg_temp_new();
1674 t[1] = tcg_temp_new();
1675 }
1676 }
1677
1678 static inline void cris_alu_free_temps(DisasContext *dc, int size, TCGv *t)
1679 {
1680 if (size != 4) {
1681 tcg_temp_free(t[0]);
1682 tcg_temp_free(t[1]);
1683 }
1684 }
1685
1686 static unsigned int dec_and_r(DisasContext *dc)
1687 {
1688 TCGv t[2];
1689 int size = memsize_zz(dc);
1690
1691 DIS(fprintf (logfile, "and.%c $r%u, $r%u\n",
1692 memsize_char(size), dc->op1, dc->op2));
1693
1694 cris_cc_mask(dc, CC_MASK_NZ);
1695
1696 cris_alu_alloc_temps(dc, size, t);
1697 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1698 cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], size);
1699 cris_alu_free_temps(dc, size, t);
1700 return 2;
1701 }
1702
1703 static unsigned int dec_lz_r(DisasContext *dc)
1704 {
1705 TCGv t0;
1706 DIS(fprintf (logfile, "lz $r%u, $r%u\n",
1707 dc->op1, dc->op2));
1708 cris_cc_mask(dc, CC_MASK_NZ);
1709 t0 = tcg_temp_new();
1710 dec_prep_alu_r(dc, dc->op1, dc->op2, 4, 0, cpu_R[dc->op2], t0);
1711 cris_alu(dc, CC_OP_LZ, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1712 tcg_temp_free(t0);
1713 return 2;
1714 }
1715
1716 static unsigned int dec_lsl_r(DisasContext *dc)
1717 {
1718 TCGv t[2];
1719 int size = memsize_zz(dc);
1720
1721 DIS(fprintf (logfile, "lsl.%c $r%u, $r%u\n",
1722 memsize_char(size), dc->op1, dc->op2));
1723
1724 cris_cc_mask(dc, CC_MASK_NZ);
1725 cris_alu_alloc_temps(dc, size, t);
1726 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1727 tcg_gen_andi_tl(t[1], t[1], 63);
1728 cris_alu(dc, CC_OP_LSL, cpu_R[dc->op2], t[0], t[1], size);
1729 cris_alu_alloc_temps(dc, size, t);
1730 return 2;
1731 }
1732
1733 static unsigned int dec_lsr_r(DisasContext *dc)
1734 {
1735 TCGv t[2];
1736 int size = memsize_zz(dc);
1737
1738 DIS(fprintf (logfile, "lsr.%c $r%u, $r%u\n",
1739 memsize_char(size), dc->op1, dc->op2));
1740
1741 cris_cc_mask(dc, CC_MASK_NZ);
1742 cris_alu_alloc_temps(dc, size, t);
1743 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1744 tcg_gen_andi_tl(t[1], t[1], 63);
1745 cris_alu(dc, CC_OP_LSR, cpu_R[dc->op2], t[0], t[1], size);
1746 cris_alu_free_temps(dc, size, t);
1747 return 2;
1748 }
1749
1750 static unsigned int dec_asr_r(DisasContext *dc)
1751 {
1752 TCGv t[2];
1753 int size = memsize_zz(dc);
1754
1755 DIS(fprintf (logfile, "asr.%c $r%u, $r%u\n",
1756 memsize_char(size), dc->op1, dc->op2));
1757
1758 cris_cc_mask(dc, CC_MASK_NZ);
1759 cris_alu_alloc_temps(dc, size, t);
1760 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]);
1761 tcg_gen_andi_tl(t[1], t[1], 63);
1762 cris_alu(dc, CC_OP_ASR, cpu_R[dc->op2], t[0], t[1], size);
1763 cris_alu_free_temps(dc, size, t);
1764 return 2;
1765 }
1766
1767 static unsigned int dec_muls_r(DisasContext *dc)
1768 {
1769 TCGv t[2];
1770 int size = memsize_zz(dc);
1771
1772 DIS(fprintf (logfile, "muls.%c $r%u, $r%u\n",
1773 memsize_char(size), dc->op1, dc->op2));
1774 cris_cc_mask(dc, CC_MASK_NZV);
1775 cris_alu_alloc_temps(dc, size, t);
1776 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]);
1777
1778 cris_alu(dc, CC_OP_MULS, cpu_R[dc->op2], t[0], t[1], 4);
1779 cris_alu_free_temps(dc, size, t);
1780 return 2;
1781 }
1782
1783 static unsigned int dec_mulu_r(DisasContext *dc)
1784 {
1785 TCGv t[2];
1786 int size = memsize_zz(dc);
1787
1788 DIS(fprintf (logfile, "mulu.%c $r%u, $r%u\n",
1789 memsize_char(size), dc->op1, dc->op2));
1790 cris_cc_mask(dc, CC_MASK_NZV);
1791 cris_alu_alloc_temps(dc, size, t);
1792 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1793
1794 cris_alu(dc, CC_OP_MULU, cpu_R[dc->op2], t[0], t[1], 4);
1795 cris_alu_alloc_temps(dc, size, t);
1796 return 2;
1797 }
1798
1799
1800 static unsigned int dec_dstep_r(DisasContext *dc)
1801 {
1802 DIS(fprintf (logfile, "dstep $r%u, $r%u\n", dc->op1, dc->op2));
1803 cris_cc_mask(dc, CC_MASK_NZ);
1804 cris_alu(dc, CC_OP_DSTEP,
1805 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4);
1806 return 2;
1807 }
1808
1809 static unsigned int dec_xor_r(DisasContext *dc)
1810 {
1811 TCGv t[2];
1812 int size = memsize_zz(dc);
1813 DIS(fprintf (logfile, "xor.%c $r%u, $r%u\n",
1814 memsize_char(size), dc->op1, dc->op2));
1815 BUG_ON(size != 4); /* xor is dword. */
1816 cris_cc_mask(dc, CC_MASK_NZ);
1817 cris_alu_alloc_temps(dc, size, t);
1818 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1819
1820 cris_alu(dc, CC_OP_XOR, cpu_R[dc->op2], t[0], t[1], 4);
1821 cris_alu_free_temps(dc, size, t);
1822 return 2;
1823 }
1824
1825 static unsigned int dec_bound_r(DisasContext *dc)
1826 {
1827 TCGv l0;
1828 int size = memsize_zz(dc);
1829 DIS(fprintf (logfile, "bound.%c $r%u, $r%u\n",
1830 memsize_char(size), dc->op1, dc->op2));
1831 cris_cc_mask(dc, CC_MASK_NZ);
1832 l0 = tcg_temp_local_new();
1833 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, l0);
1834 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], cpu_R[dc->op2], l0, 4);
1835 tcg_temp_free(l0);
1836 return 2;
1837 }
1838
1839 static unsigned int dec_cmp_r(DisasContext *dc)
1840 {
1841 TCGv t[2];
1842 int size = memsize_zz(dc);
1843 DIS(fprintf (logfile, "cmp.%c $r%u, $r%u\n",
1844 memsize_char(size), dc->op1, dc->op2));
1845 cris_cc_mask(dc, CC_MASK_NZVC);
1846 cris_alu_alloc_temps(dc, size, t);
1847 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1848
1849 cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], t[0], t[1], size);
1850 cris_alu_free_temps(dc, size, t);
1851 return 2;
1852 }
1853
1854 static unsigned int dec_abs_r(DisasContext *dc)
1855 {
1856 TCGv t0;
1857
1858 DIS(fprintf (logfile, "abs $r%u, $r%u\n",
1859 dc->op1, dc->op2));
1860 cris_cc_mask(dc, CC_MASK_NZ);
1861
1862 t0 = tcg_temp_new();
1863 tcg_gen_sari_tl(t0, cpu_R[dc->op1], 31);
1864 tcg_gen_xor_tl(cpu_R[dc->op2], cpu_R[dc->op1], t0);
1865 tcg_gen_sub_tl(cpu_R[dc->op2], cpu_R[dc->op2], t0);
1866 tcg_temp_free(t0);
1867
1868 cris_alu(dc, CC_OP_MOVE,
1869 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op2], 4);
1870 return 2;
1871 }
1872
1873 static unsigned int dec_add_r(DisasContext *dc)
1874 {
1875 TCGv t[2];
1876 int size = memsize_zz(dc);
1877 DIS(fprintf (logfile, "add.%c $r%u, $r%u\n",
1878 memsize_char(size), dc->op1, dc->op2));
1879 cris_cc_mask(dc, CC_MASK_NZVC);
1880 cris_alu_alloc_temps(dc, size, t);
1881 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1882
1883 cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], t[0], t[1], size);
1884 cris_alu_free_temps(dc, size, t);
1885 return 2;
1886 }
1887
1888 static unsigned int dec_addc_r(DisasContext *dc)
1889 {
1890 DIS(fprintf (logfile, "addc $r%u, $r%u\n",
1891 dc->op1, dc->op2));
1892 cris_evaluate_flags(dc);
1893 cris_cc_mask(dc, CC_MASK_NZVC);
1894 cris_alu(dc, CC_OP_ADDC,
1895 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4);
1896 return 2;
1897 }
1898
1899 static unsigned int dec_mcp_r(DisasContext *dc)
1900 {
1901 DIS(fprintf (logfile, "mcp $p%u, $r%u\n",
1902 dc->op2, dc->op1));
1903 cris_evaluate_flags(dc);
1904 cris_cc_mask(dc, CC_MASK_RNZV);
1905 cris_alu(dc, CC_OP_MCP,
1906 cpu_R[dc->op1], cpu_R[dc->op1], cpu_PR[dc->op2], 4);
1907 return 2;
1908 }
1909
1910 #if DISAS_CRIS
1911 static char * swapmode_name(int mode, char *modename) {
1912 int i = 0;
1913 if (mode & 8)
1914 modename[i++] = 'n';
1915 if (mode & 4)
1916 modename[i++] = 'w';
1917 if (mode & 2)
1918 modename[i++] = 'b';
1919 if (mode & 1)
1920 modename[i++] = 'r';
1921 modename[i++] = 0;
1922 return modename;
1923 }
1924 #endif
1925
1926 static unsigned int dec_swap_r(DisasContext *dc)
1927 {
1928 TCGv t0;
1929 #if DISAS_CRIS
1930 char modename[4];
1931 #endif
1932 DIS(fprintf (logfile, "swap%s $r%u\n",
1933 swapmode_name(dc->op2, modename), dc->op1));
1934
1935 cris_cc_mask(dc, CC_MASK_NZ);
1936 t0 = tcg_temp_new();
1937 t_gen_mov_TN_reg(t0, dc->op1);
1938 if (dc->op2 & 8)
1939 tcg_gen_not_tl(t0, t0);
1940 if (dc->op2 & 4)
1941 t_gen_swapw(t0, t0);
1942 if (dc->op2 & 2)
1943 t_gen_swapb(t0, t0);
1944 if (dc->op2 & 1)
1945 t_gen_swapr(t0, t0);
1946 cris_alu(dc, CC_OP_MOVE,
1947 cpu_R[dc->op1], cpu_R[dc->op1], t0, 4);
1948 tcg_temp_free(t0);
1949 return 2;
1950 }
1951
1952 static unsigned int dec_or_r(DisasContext *dc)
1953 {
1954 TCGv t[2];
1955 int size = memsize_zz(dc);
1956 DIS(fprintf (logfile, "or.%c $r%u, $r%u\n",
1957 memsize_char(size), dc->op1, dc->op2));
1958 cris_cc_mask(dc, CC_MASK_NZ);
1959 cris_alu_alloc_temps(dc, size, t);
1960 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1961 cris_alu(dc, CC_OP_OR, cpu_R[dc->op2], t[0], t[1], size);
1962 cris_alu_free_temps(dc, size, t);
1963 return 2;
1964 }
1965
1966 static unsigned int dec_addi_r(DisasContext *dc)
1967 {
1968 TCGv t0;
1969 DIS(fprintf (logfile, "addi.%c $r%u, $r%u\n",
1970 memsize_char(memsize_zz(dc)), dc->op2, dc->op1));
1971 cris_cc_mask(dc, 0);
1972 t0 = tcg_temp_new();
1973 tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize));
1974 tcg_gen_add_tl(cpu_R[dc->op1], cpu_R[dc->op1], t0);
1975 tcg_temp_free(t0);
1976 return 2;
1977 }
1978
1979 static unsigned int dec_addi_acr(DisasContext *dc)
1980 {
1981 TCGv t0;
1982 DIS(fprintf (logfile, "addi.%c $r%u, $r%u, $acr\n",
1983 memsize_char(memsize_zz(dc)), dc->op2, dc->op1));
1984 cris_cc_mask(dc, 0);
1985 t0 = tcg_temp_new();
1986 tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize));
1987 tcg_gen_add_tl(cpu_R[R_ACR], cpu_R[dc->op1], t0);
1988 tcg_temp_free(t0);
1989 return 2;
1990 }
1991
1992 static unsigned int dec_neg_r(DisasContext *dc)
1993 {
1994 TCGv t[2];
1995 int size = memsize_zz(dc);
1996 DIS(fprintf (logfile, "neg.%c $r%u, $r%u\n",
1997 memsize_char(size), dc->op1, dc->op2));
1998 cris_cc_mask(dc, CC_MASK_NZVC);
1999 cris_alu_alloc_temps(dc, size, t);
2000 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
2001
2002 cris_alu(dc, CC_OP_NEG, cpu_R[dc->op2], t[0], t[1], size);
2003 cris_alu_free_temps(dc, size, t);
2004 return 2;
2005 }
2006
2007 static unsigned int dec_btst_r(DisasContext *dc)
2008 {
2009 TCGv l0;
2010 DIS(fprintf (logfile, "btst $r%u, $r%u\n",
2011 dc->op1, dc->op2));
2012 cris_cc_mask(dc, CC_MASK_NZ);
2013
2014 l0 = tcg_temp_local_new();
2015 cris_alu(dc, CC_OP_BTST, l0, cpu_R[dc->op2], cpu_R[dc->op1], 4);
2016 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
2017 t_gen_mov_preg_TN(dc, PR_CCS, l0);
2018 dc->flags_uptodate = 1;
2019 tcg_temp_free(l0);
2020 return 2;
2021 }
2022
2023 static unsigned int dec_sub_r(DisasContext *dc)
2024 {
2025 TCGv t[2];
2026 int size = memsize_zz(dc);
2027 DIS(fprintf (logfile, "sub.%c $r%u, $r%u\n",
2028 memsize_char(size), dc->op1, dc->op2));
2029 cris_cc_mask(dc, CC_MASK_NZVC);
2030 cris_alu_alloc_temps(dc, size, t);
2031 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
2032 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], size);
2033 cris_alu_free_temps(dc, size, t);
2034 return 2;
2035 }
2036
2037 /* Zero extension. From size to dword. */
2038 static unsigned int dec_movu_r(DisasContext *dc)
2039 {
2040 TCGv t0;
2041 int size = memsize_z(dc);
2042 DIS(fprintf (logfile, "movu.%c $r%u, $r%u\n",
2043 memsize_char(size),
2044 dc->op1, dc->op2));
2045
2046 cris_cc_mask(dc, CC_MASK_NZ);
2047 t0 = tcg_temp_new();
2048 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0);
2049 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
2050 tcg_temp_free(t0);
2051 return 2;
2052 }
2053
2054 /* Sign extension. From size to dword. */
2055 static unsigned int dec_movs_r(DisasContext *dc)
2056 {
2057 TCGv t0;
2058 int size = memsize_z(dc);
2059 DIS(fprintf (logfile, "movs.%c $r%u, $r%u\n",
2060 memsize_char(size),
2061 dc->op1, dc->op2));
2062
2063 cris_cc_mask(dc, CC_MASK_NZ);
2064 t0 = tcg_temp_new();
2065 /* Size can only be qi or hi. */
2066 t_gen_sext(t0, cpu_R[dc->op1], size);
2067 cris_alu(dc, CC_OP_MOVE,
2068 cpu_R[dc->op2], cpu_R[dc->op1], t0, 4);
2069 tcg_temp_free(t0);
2070 return 2;
2071 }
2072
2073 /* zero extension. From size to dword. */
2074 static unsigned int dec_addu_r(DisasContext *dc)
2075 {
2076 TCGv t0;
2077 int size = memsize_z(dc);
2078 DIS(fprintf (logfile, "addu.%c $r%u, $r%u\n",
2079 memsize_char(size),
2080 dc->op1, dc->op2));
2081
2082 cris_cc_mask(dc, CC_MASK_NZVC);
2083 t0 = tcg_temp_new();
2084 /* Size can only be qi or hi. */
2085 t_gen_zext(t0, cpu_R[dc->op1], size);
2086 cris_alu(dc, CC_OP_ADD,
2087 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
2088 tcg_temp_free(t0);
2089 return 2;
2090 }
2091
2092 /* Sign extension. From size to dword. */
2093 static unsigned int dec_adds_r(DisasContext *dc)
2094 {
2095 TCGv t0;
2096 int size = memsize_z(dc);
2097 DIS(fprintf (logfile, "adds.%c $r%u, $r%u\n",
2098 memsize_char(size),
2099 dc->op1, dc->op2));
2100
2101 cris_cc_mask(dc, CC_MASK_NZVC);
2102 t0 = tcg_temp_new();
2103 /* Size can only be qi or hi. */
2104 t_gen_sext(t0, cpu_R[dc->op1], size);
2105 cris_alu(dc, CC_OP_ADD,
2106 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
2107 tcg_temp_free(t0);
2108 return 2;
2109 }
2110
2111 /* Zero extension. From size to dword. */
2112 static unsigned int dec_subu_r(DisasContext *dc)
2113 {
2114 TCGv t0;
2115 int size = memsize_z(dc);
2116 DIS(fprintf (logfile, "subu.%c $r%u, $r%u\n",
2117 memsize_char(size),
2118 dc->op1, dc->op2));
2119
2120 cris_cc_mask(dc, CC_MASK_NZVC);
2121 t0 = tcg_temp_new();
2122 /* Size can only be qi or hi. */
2123 t_gen_zext(t0, cpu_R[dc->op1], size);
2124 cris_alu(dc, CC_OP_SUB,
2125 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
2126 tcg_temp_free(t0);
2127 return 2;
2128 }
2129
2130 /* Sign extension. From size to dword. */
2131 static unsigned int dec_subs_r(DisasContext *dc)
2132 {
2133 TCGv t0;
2134 int size = memsize_z(dc);
2135 DIS(fprintf (logfile, "subs.%c $r%u, $r%u\n",
2136 memsize_char(size),
2137 dc->op1, dc->op2));
2138
2139 cris_cc_mask(dc, CC_MASK_NZVC);
2140 t0 = tcg_temp_new();
2141 /* Size can only be qi or hi. */
2142 t_gen_sext(t0, cpu_R[dc->op1], size);
2143 cris_alu(dc, CC_OP_SUB,
2144 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
2145 tcg_temp_free(t0);
2146 return 2;
2147 }
2148
2149 static unsigned int dec_setclrf(DisasContext *dc)
2150 {
2151 uint32_t flags;
2152 int set = (~dc->opcode >> 2) & 1;
2153
2154
2155 flags = (EXTRACT_FIELD(dc->ir, 12, 15) << 4)
2156 | EXTRACT_FIELD(dc->ir, 0, 3);
2157 if (set && flags == 0) {
2158 DIS(fprintf (logfile, "nop\n"));
2159 return 2;
2160 } else if (!set && (flags & 0x20)) {
2161 DIS(fprintf (logfile, "di\n"));
2162 }
2163 else {
2164 DIS(fprintf (logfile, "%sf %x\n",
2165 set ? "set" : "clr",
2166 flags));
2167 }
2168
2169 /* User space is not allowed to touch these. Silently ignore. */
2170 if (dc->tb_flags & U_FLAG) {
2171 flags &= ~(S_FLAG | I_FLAG | U_FLAG);
2172 }
2173
2174 if (flags & X_FLAG) {
2175 dc->flagx_known = 1;
2176 if (set)
2177 dc->flags_x = X_FLAG;
2178 else
2179 dc->flags_x = 0;
2180 }
2181
2182 /* Break the TB if the P flag changes. */
2183 if (flags & P_FLAG) {
2184 if ((set && !(dc->tb_flags & P_FLAG))
2185 || (!set && (dc->tb_flags & P_FLAG))) {
2186 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2187 dc->is_jmp = DISAS_UPDATE;
2188 dc->cpustate_changed = 1;
2189 }
2190 }
2191 if (flags & S_FLAG) {
2192 dc->cpustate_changed = 1;
2193 }
2194
2195
2196 /* Simply decode the flags. */
2197 cris_evaluate_flags (dc);
2198 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
2199 cris_update_cc_x(dc);
2200 tcg_gen_movi_tl(cc_op, dc->cc_op);
2201
2202 if (set) {
2203 if (!(dc->tb_flags & U_FLAG) && (flags & U_FLAG)) {
2204 /* Enter user mode. */
2205 t_gen_mov_env_TN(ksp, cpu_R[R_SP]);
2206 tcg_gen_mov_tl(cpu_R[R_SP], cpu_PR[PR_USP]);
2207 dc->cpustate_changed = 1;
2208 }
2209 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags);
2210 }
2211 else
2212 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~flags);
2213
2214 dc->flags_uptodate = 1;
2215 dc->clear_x = 0;
2216 return 2;
2217 }
2218
2219 static unsigned int dec_move_rs(DisasContext *dc)
2220 {
2221 DIS(fprintf (logfile, "move $r%u, $s%u\n", dc->op1, dc->op2));
2222 cris_cc_mask(dc, 0);
2223 gen_helper_movl_sreg_reg(tcg_const_tl(dc->op2), tcg_const_tl(dc->op1));
2224 return 2;
2225 }
2226 static unsigned int dec_move_sr(DisasContext *dc)
2227 {
2228 DIS(fprintf (logfile, "move $s%u, $r%u\n", dc->op2, dc->op1));
2229 cris_cc_mask(dc, 0);
2230 gen_helper_movl_reg_sreg(tcg_const_tl(dc->op1), tcg_const_tl(dc->op2));
2231 return 2;
2232 }
2233
2234 static unsigned int dec_move_rp(DisasContext *dc)
2235 {
2236 TCGv t[2];
2237 DIS(fprintf (logfile, "move $r%u, $p%u\n", dc->op1, dc->op2));
2238 cris_cc_mask(dc, 0);
2239
2240 t[0] = tcg_temp_new();
2241 if (dc->op2 == PR_CCS) {
2242 cris_evaluate_flags(dc);
2243 t_gen_mov_TN_reg(t[0], dc->op1);
2244 if (dc->tb_flags & U_FLAG) {
2245 t[1] = tcg_temp_new();
2246 /* User space is not allowed to touch all flags. */
2247 tcg_gen_andi_tl(t[0], t[0], 0x39f);
2248 tcg_gen_andi_tl(t[1], cpu_PR[PR_CCS], ~0x39f);
2249 tcg_gen_or_tl(t[0], t[1], t[0]);
2250 tcg_temp_free(t[1]);
2251 }
2252 }
2253 else
2254 t_gen_mov_TN_reg(t[0], dc->op1);
2255
2256 t_gen_mov_preg_TN(dc, dc->op2, t[0]);
2257 if (dc->op2 == PR_CCS) {
2258 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
2259 dc->flags_uptodate = 1;
2260 }
2261 tcg_temp_free(t[0]);
2262 return 2;
2263 }
2264 static unsigned int dec_move_pr(DisasContext *dc)
2265 {
2266 TCGv t0;
2267 DIS(fprintf (logfile, "move $p%u, $r%u\n", dc->op1, dc->op2));
2268 cris_cc_mask(dc, 0);
2269
2270 if (dc->op2 == PR_CCS)
2271 cris_evaluate_flags(dc);
2272
2273 t0 = tcg_temp_new();
2274 t_gen_mov_TN_preg(t0, dc->op2);
2275 cris_alu(dc, CC_OP_MOVE,
2276 cpu_R[dc->op1], cpu_R[dc->op1], t0, preg_sizes[dc->op2]);
2277 tcg_temp_free(t0);
2278 return 2;
2279 }
2280
2281 static unsigned int dec_move_mr(DisasContext *dc)
2282 {
2283 int memsize = memsize_zz(dc);
2284 int insn_len;
2285 DIS(fprintf (logfile, "move.%c [$r%u%s, $r%u\n",
2286 memsize_char(memsize),
2287 dc->op1, dc->postinc ? "+]" : "]",
2288 dc->op2));
2289
2290 if (memsize == 4) {
2291 insn_len = dec_prep_move_m(dc, 0, 4, cpu_R[dc->op2]);
2292 cris_cc_mask(dc, CC_MASK_NZ);
2293 cris_update_cc_op(dc, CC_OP_MOVE, 4);
2294 cris_update_cc_x(dc);
2295 cris_update_result(dc, cpu_R[dc->op2]);
2296 }
2297 else {
2298 TCGv t0;
2299
2300 t0 = tcg_temp_new();
2301 insn_len = dec_prep_move_m(dc, 0, memsize, t0);
2302 cris_cc_mask(dc, CC_MASK_NZ);
2303 cris_alu(dc, CC_OP_MOVE,
2304 cpu_R[dc->op2], cpu_R[dc->op2], t0, memsize);
2305 tcg_temp_free(t0);
2306 }
2307 do_postinc(dc, memsize);
2308 return insn_len;
2309 }
2310
2311 static inline void cris_alu_m_alloc_temps(TCGv *t)
2312 {
2313 t[0] = tcg_temp_new();
2314 t[1] = tcg_temp_new();
2315 }
2316
2317 static inline void cris_alu_m_free_temps(TCGv *t)
2318 {
2319 tcg_temp_free(t[0]);
2320 tcg_temp_free(t[1]);
2321 }
2322
2323 static unsigned int dec_movs_m(DisasContext *dc)
2324 {
2325 TCGv t[2];
2326 int memsize = memsize_z(dc);
2327 int insn_len;
2328 DIS(fprintf (logfile, "movs.%c [$r%u%s, $r%u\n",
2329 memsize_char(memsize),
2330 dc->op1, dc->postinc ? "+]" : "]",
2331 dc->op2));
2332
2333 cris_alu_m_alloc_temps(t);
2334 /* sign extend. */
2335 insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]);
2336 cris_cc_mask(dc, CC_MASK_NZ);
2337 cris_alu(dc, CC_OP_MOVE,
2338 cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2339 do_postinc(dc, memsize);
2340 cris_alu_m_free_temps(t);
2341 return insn_len;
2342 }
2343
2344 static unsigned int dec_addu_m(DisasContext *dc)
2345 {
2346 TCGv t[2];
2347 int memsize = memsize_z(dc);
2348 int insn_len;
2349 DIS(fprintf (logfile, "addu.%c [$r%u%s, $r%u\n",
2350 memsize_char(memsize),
2351 dc->op1, dc->postinc ? "+]" : "]",
2352 dc->op2));
2353
2354 cris_alu_m_alloc_temps(t);
2355 /* sign extend. */
2356 insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
2357 cris_cc_mask(dc, CC_MASK_NZVC);
2358 cris_alu(dc, CC_OP_ADD,
2359 cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2360 do_postinc(dc, memsize);
2361 cris_alu_m_free_temps(t);
2362 return insn_len;
2363 }
2364
2365 static unsigned int dec_adds_m(DisasContext *dc)
2366 {
2367 TCGv t[2];
2368 int memsize = memsize_z(dc);
2369 int insn_len;
2370 DIS(fprintf (logfile, "adds.%c [$r%u%s, $r%u\n",
2371 memsize_char(memsize),
2372 dc->op1, dc->postinc ? "+]" : "]",
2373 dc->op2));
2374
2375 cris_alu_m_alloc_temps(t);
2376 /* sign extend. */
2377 insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]);
2378 cris_cc_mask(dc, CC_MASK_NZVC);
2379 cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2380 do_postinc(dc, memsize);
2381 cris_alu_m_free_temps(t);
2382 return insn_len;
2383 }
2384
2385 static unsigned int dec_subu_m(DisasContext *dc)
2386 {
2387 TCGv t[2];
2388 int memsize = memsize_z(dc);
2389 int insn_len;
2390 DIS(fprintf (logfile, "subu.%c [$r%u%s, $r%u\n",
2391 memsize_char(memsize),
2392 dc->op1, dc->postinc ? "+]" : "]",
2393 dc->op2));
2394
2395 cris_alu_m_alloc_temps(t);
2396 /* sign extend. */
2397 insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
2398 cris_cc_mask(dc, CC_MASK_NZVC);
2399 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2400 do_postinc(dc, memsize);
2401 cris_alu_m_free_temps(t);
2402 return insn_len;
2403 }
2404
2405 static unsigned int dec_subs_m(DisasContext *dc)
2406 {
2407 TCGv t[2];
2408 int memsize = memsize_z(dc);
2409 int insn_len;
2410 DIS(fprintf (logfile, "subs.%c [$r%u%s, $r%u\n",
2411 memsize_char(memsize),
2412 dc->op1, dc->postinc ? "+]" : "]",
2413 dc->op2));
2414
2415 cris_alu_m_alloc_temps(t);
2416 /* sign extend. */
2417 insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]);
2418 cris_cc_mask(dc, CC_MASK_NZVC);
2419 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2420 do_postinc(dc, memsize);
2421 cris_alu_m_free_temps(t);
2422 return insn_len;
2423 }
2424
2425 static unsigned int dec_movu_m(DisasContext *dc)
2426 {
2427 TCGv t[2];
2428 int memsize = memsize_z(dc);
2429 int insn_len;
2430
2431 DIS(fprintf (logfile, "movu.%c [$r%u%s, $r%u\n",
2432 memsize_char(memsize),
2433 dc->op1, dc->postinc ? "+]" : "]",
2434 dc->op2));
2435
2436 cris_alu_m_alloc_temps(t);
2437 insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
2438 cris_cc_mask(dc, CC_MASK_NZ);
2439 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2440 do_postinc(dc, memsize);
2441 cris_alu_m_free_temps(t);
2442 return insn_len;
2443 }
2444
2445 static unsigned int dec_cmpu_m(DisasContext *dc)
2446 {
2447 TCGv t[2];
2448 int memsize = memsize_z(dc);
2449 int insn_len;
2450 DIS(fprintf (logfile, "cmpu.%c [$r%u%s, $r%u\n",
2451 memsize_char(memsize),
2452 dc->op1, dc->postinc ? "+]" : "]",
2453 dc->op2));
2454
2455 cris_alu_m_alloc_temps(t);
2456 insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
2457 cris_cc_mask(dc, CC_MASK_NZVC);
2458 cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2459 do_postinc(dc, memsize);
2460 cris_alu_m_free_temps(t);
2461 return insn_len;
2462 }
2463
2464 static unsigned int dec_cmps_m(DisasContext *dc)
2465 {
2466 TCGv t[2];
2467 int memsize = memsize_z(dc);
2468 int insn_len;
2469 DIS(fprintf (logfile, "cmps.%c [$r%u%s, $r%u\n",
2470 memsize_char(memsize),
2471 dc->op1, dc->postinc ? "+]" : "]",
2472 dc->op2));
2473
2474 cris_alu_m_alloc_temps(t);
2475 insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]);
2476 cris_cc_mask(dc, CC_MASK_NZVC);
2477 cris_alu(dc, CC_OP_CMP,
2478 cpu_R[dc->op2], cpu_R[dc->op2], t[1],
2479 memsize_zz(dc));
2480 do_postinc(dc, memsize);
2481 cris_alu_m_free_temps(t);
2482 return insn_len;
2483 }
2484
2485 static unsigned int dec_cmp_m(DisasContext *dc)
2486 {
2487 TCGv t[2];
2488 int memsize = memsize_zz(dc);
2489 int insn_len;
2490 DIS(fprintf (logfile, "cmp.%c [$r%u%s, $r%u\n",
2491 memsize_char(memsize),
2492 dc->op1, dc->postinc ? "+]" : "]",
2493 dc->op2));
2494
2495 cris_alu_m_alloc_temps(t);
2496 insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
2497 cris_cc_mask(dc, CC_MASK_NZVC);
2498 cris_alu(dc, CC_OP_CMP,
2499 cpu_R[dc->op2], cpu_R[dc->op2], t[1],
2500 memsize_zz(dc));
2501 do_postinc(dc, memsize);
2502 cris_alu_m_free_temps(t);
2503 return insn_len;
2504 }
2505
2506 static unsigned int dec_test_m(DisasContext *dc)
2507 {
2508 TCGv t[2];
2509 int memsize = memsize_zz(dc);
2510 int insn_len;
2511 DIS(fprintf (logfile, "test.%d [$r%u%s] op2=%x\n",
2512 memsize_char(memsize),
2513 dc->op1, dc->postinc ? "+]" : "]",
2514 dc->op2));
2515
2516 cris_evaluate_flags(dc);
2517
2518 cris_alu_m_alloc_temps(t);
2519 insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
2520 cris_cc_mask(dc, CC_MASK_NZ);
2521 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3);
2522
2523 cris_alu(dc, CC_OP_CMP,
2524 cpu_R[dc->op2], t[1], tcg_const_tl(0), memsize_zz(dc));
2525 do_postinc(dc, memsize);
2526 cris_alu_m_free_temps(t);
2527 return insn_len;
2528 }
2529
2530 static unsigned int dec_and_m(DisasContext *dc)
2531 {
2532 TCGv t[2];
2533 int memsize = memsize_zz(dc);
2534 int insn_len;
2535 DIS(fprintf (logfile, "and.%d [$r%u%s, $r%u\n",
2536 memsize_char(memsize),
2537 dc->op1, dc->postinc ? "+]" : "]",
2538 dc->op2));
2539
2540 cris_alu_m_alloc_temps(t);
2541 insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
2542 cris_cc_mask(dc, CC_MASK_NZ);
2543 cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
2544 do_postinc(dc, memsize);
2545 cris_alu_m_free_temps(t);
2546 return insn_len;
2547 }
2548
2549 static unsigned int dec_add_m(DisasContext *dc)
2550 {
2551 TCGv t[2];
2552 int memsize = memsize_zz(dc);
2553 int insn_len;
2554 DIS(fprintf (logfile, "add.%d [$r%u%s, $r%u\n",
2555 memsize_char(memsize),
2556 dc->op1, dc->postinc ? "+]" : "]",
2557 dc->op2));
2558
2559 cris_alu_m_alloc_temps(t);
2560 insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
2561 cris_cc_mask(dc, CC_MASK_NZVC);
2562 cris_alu(dc, CC_OP_ADD,
2563 cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
2564 do_postinc(dc, memsize);
2565 cris_alu_m_free_temps(t);
2566 return insn_len;
2567 }
2568
2569 static unsigned int dec_addo_m(DisasContext *dc)
2570 {
2571 TCGv t[2];
2572 int memsize = memsize_zz(dc);
2573 int insn_len;
2574 DIS(fprintf (logfile, "add.%d [$r%u%s, $r%u\n",
2575 memsize_char(memsize),
2576 dc->op1, dc->postinc ? "+]" : "]",
2577 dc->op2));
2578
2579 cris_alu_m_alloc_temps(t);
2580 insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]);
2581 cris_cc_mask(dc, 0);
2582 cris_alu(dc, CC_OP_ADD, cpu_R[R_ACR], t[0], t[1], 4);
2583 do_postinc(dc, memsize);
2584 cris_alu_m_free_temps(t);
2585 return insn_len;
2586 }
2587
2588 static unsigned int dec_bound_m(DisasContext *dc)
2589 {
2590 TCGv l[2];
2591 int memsize = memsize_zz(dc);
2592 int insn_len;
2593 DIS(fprintf (logfile, "bound.%d [$r%u%s, $r%u\n",
2594 memsize_char(memsize),
2595 dc->op1, dc->postinc ? "+]" : "]",
2596 dc->op2));
2597
2598 l[0] = tcg_temp_local_new();
2599 l[1] = tcg_temp_local_new();
2600 insn_len = dec_prep_alu_m(dc, 0, memsize, l[0], l[1]);
2601 cris_cc_mask(dc, CC_MASK_NZ);
2602 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], l[0], l[1], 4);
2603 do_postinc(dc, memsize);
2604 tcg_temp_free(l[0]);
2605 tcg_temp_free(l[1]);
2606 return insn_len;
2607 }
2608
2609 static unsigned int dec_addc_mr(DisasContext *dc)
2610 {
2611 TCGv t[2];
2612 int insn_len = 2;
2613 DIS(fprintf (logfile, "addc [$r%u%s, $r%u\n",
2614 dc->op1, dc->postinc ? "+]" : "]",
2615 dc->op2));
2616
2617 cris_evaluate_flags(dc);
2618 cris_alu_m_alloc_temps(t);
2619 insn_len = dec_prep_alu_m(dc, 0, 4, t[0], t[1]);
2620 cris_cc_mask(dc, CC_MASK_NZVC);
2621 cris_alu(dc, CC_OP_ADDC, cpu_R[dc->op2], t[0], t[1], 4);
2622 do_postinc(dc, 4);
2623 cris_alu_m_free_temps(t);
2624 return insn_len;
2625 }
2626
2627 static unsigned int dec_sub_m(DisasContext *dc)
2628 {
2629 TCGv t[2];
2630 int memsize = memsize_zz(dc);
2631 int insn_len;
2632 DIS(fprintf (logfile, "sub.%c [$r%u%s, $r%u ir=%x zz=%x\n",
2633 memsize_char(memsize),
2634 dc->op1, dc->postinc ? "+]" : "]",
2635 dc->op2, dc->ir, dc->zzsize));
2636
2637 cris_alu_m_alloc_temps(t);
2638 insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
2639 cris_cc_mask(dc, CC_MASK_NZVC);
2640 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], memsize);
2641 do_postinc(dc, memsize);
2642 cris_alu_m_free_temps(t);
2643 return insn_len;
2644 }
2645
2646 static unsigned int dec_or_m(DisasContext *dc)
2647 {
2648 TCGv t[2];
2649 int memsize = memsize_zz(dc);
2650 int insn_len;
2651 DIS(fprintf (logfile, "or.%d [$r%u%s, $r%u pc=%x\n",
2652 memsize_char(memsize),
2653 dc->op1, dc->postinc ? "+]" : "]",
2654 dc->op2, dc->pc));
2655
2656 cris_alu_m_alloc_temps(t);
2657 insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
2658 cris_cc_mask(dc, CC_MASK_NZ);
2659 cris_alu(dc, CC_OP_OR,
2660 cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
2661 do_postinc(dc, memsize);
2662 cris_alu_m_free_temps(t);
2663 return insn_len;
2664 }
2665
2666 static unsigned int dec_move_mp(DisasContext *dc)
2667 {
2668 TCGv t[2];
2669 int memsize = memsize_zz(dc);
2670 int insn_len = 2;
2671
2672 DIS(fprintf (logfile, "move.%c [$r%u%s, $p%u\n",
2673 memsize_char(memsize),
2674 dc->op1,
2675 dc->postinc ? "+]" : "]",
2676 dc->op2));
2677
2678 cris_alu_m_alloc_temps(t);
2679 insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
2680 cris_cc_mask(dc, 0);
2681 if (dc->op2 == PR_CCS) {
2682 cris_evaluate_flags(dc);
2683 if (dc->tb_flags & U_FLAG) {
2684 /* User space is not allowed to touch all flags. */
2685 tcg_gen_andi_tl(t[1], t[1], 0x39f);
2686 tcg_gen_andi_tl(t[0], cpu_PR[PR_CCS], ~0x39f);
2687 tcg_gen_or_tl(t[1], t[0], t[1]);
2688 }
2689 }
2690
2691 t_gen_mov_preg_TN(dc, dc->op2, t[1]);
2692
2693 do_postinc(dc, memsize);
2694 cris_alu_m_free_temps(t);
2695 return insn_len;
2696 }
2697
2698 static unsigned int dec_move_pm(DisasContext *dc)
2699 {
2700 TCGv t0;
2701 int memsize;
2702
2703 memsize = preg_sizes[dc->op2];
2704
2705 DIS(fprintf (logfile, "move.%c $p%u, [$r%u%s\n",
2706 memsize_char(memsize),
2707 dc->op2, dc->op1, dc->postinc ? "+]" : "]"));
2708
2709 /* prepare store. Address in T0, value in T1. */
2710 if (dc->op2 == PR_CCS)
2711 cris_evaluate_flags(dc);
2712 t0 = tcg_temp_new();
2713 t_gen_mov_TN_preg(t0, dc->op2);
2714 cris_flush_cc_state(dc);
2715 gen_store(dc, cpu_R[dc->op1], t0, memsize);
2716 tcg_temp_free(t0);
2717
2718 cris_cc_mask(dc, 0);
2719 if (dc->postinc)
2720 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize);
2721 return 2;
2722 }
2723
2724 static unsigned int dec_movem_mr(DisasContext *dc)
2725 {
2726 TCGv_i64 tmp[16];
2727 TCGv tmp32;
2728 TCGv addr;
2729 int i;
2730 int nr = dc->op2 + 1;
2731
2732 DIS(fprintf (logfile, "movem [$r%u%s, $r%u\n", dc->op1,
2733 dc->postinc ? "+]" : "]", dc->op2));
2734
2735 addr = tcg_temp_new();
2736 /* There are probably better ways of doing this. */
2737 cris_flush_cc_state(dc);
2738 for (i = 0; i < (nr >> 1); i++) {
2739 tmp[i] = tcg_temp_new_i64();
2740 tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8);
2741 gen_load64(dc, tmp[i], addr);
2742 }
2743 if (nr & 1) {
2744 tmp32 = tcg_temp_new_i32();
2745 tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8);
2746 gen_load(dc, tmp32, addr, 4, 0);
2747 }
2748 tcg_temp_free(addr);
2749
2750 for (i = 0; i < (nr >> 1); i++) {
2751 tcg_gen_trunc_i64_i32(cpu_R[i * 2], tmp[i]);
2752 tcg_gen_shri_i64(tmp[i], tmp[i], 32);
2753 tcg_gen_trunc_i64_i32(cpu_R[i * 2 + 1], tmp[i]);
2754 tcg_temp_free_i64(tmp[i]);
2755 }
2756 if (nr & 1) {
2757 tcg_gen_mov_tl(cpu_R[dc->op2], tmp32);
2758 tcg_temp_free(tmp32);
2759 }
2760
2761 /* writeback the updated pointer value. */
2762 if (dc->postinc)
2763 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], nr * 4);
2764
2765 /* gen_load might want to evaluate the previous insns flags. */
2766 cris_cc_mask(dc, 0);
2767 return 2;
2768 }
2769
2770 static unsigned int dec_movem_rm(DisasContext *dc)
2771 {
2772 TCGv tmp;
2773 TCGv addr;
2774 int i;
2775
2776 DIS(fprintf (logfile, "movem $r%u, [$r%u%s\n", dc->op2, dc->op1,
2777 dc->postinc ? "+]" : "]"));
2778
2779 cris_flush_cc_state(dc);
2780
2781 tmp = tcg_temp_new();
2782 addr = tcg_temp_new();
2783 tcg_gen_movi_tl(tmp, 4);
2784 tcg_gen_mov_tl(addr, cpu_R[dc->op1]);
2785 for (i = 0; i <= dc->op2; i++) {
2786 /* Displace addr. */
2787 /* Perform the store. */
2788 gen_store(dc, addr, cpu_R[i], 4);
2789 tcg_gen_add_tl(addr, addr, tmp);
2790 }
2791 if (dc->postinc)
2792 tcg_gen_mov_tl(cpu_R[dc->op1], addr);
2793 cris_cc_mask(dc, 0);
2794 tcg_temp_free(tmp);
2795 tcg_temp_free(addr);
2796 return 2;
2797 }
2798
2799 static unsigned int dec_move_rm(DisasContext *dc)
2800 {
2801 int memsize;
2802
2803 memsize = memsize_zz(dc);
2804
2805 DIS(fprintf (logfile, "move.%d $r%u, [$r%u]\n",
2806 memsize, dc->op2, dc->op1));
2807
2808 /* prepare store. */
2809 cris_flush_cc_state(dc);
2810 gen_store(dc, cpu_R[dc->op1], cpu_R[dc->op2], memsize);
2811
2812 if (dc->postinc)
2813 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize);
2814 cris_cc_mask(dc, 0);
2815 return 2;
2816 }
2817
2818 static unsigned int dec_lapcq(DisasContext *dc)
2819 {
2820 DIS(fprintf (logfile, "lapcq %x, $r%u\n",
2821 dc->pc + dc->op1*2, dc->op2));
2822 cris_cc_mask(dc, 0);
2823 tcg_gen_movi_tl(cpu_R[dc->op2], dc->pc + dc->op1 * 2);
2824 return 2;
2825 }
2826
2827 static unsigned int dec_lapc_im(DisasContext *dc)
2828 {
2829 unsigned int rd;
2830 int32_t imm;
2831 int32_t pc;
2832
2833 rd = dc->op2;
2834
2835 cris_cc_mask(dc, 0);
2836 imm = ldl_code(dc->pc + 2);
2837 DIS(fprintf (logfile, "lapc 0x%x, $r%u\n", imm + dc->pc, dc->op2));
2838
2839 pc = dc->pc;
2840 pc += imm;
2841 t_gen_mov_reg_TN(rd, tcg_const_tl(pc));
2842 return 6;
2843 }
2844
2845 /* Jump to special reg. */
2846 static unsigned int dec_jump_p(DisasContext *dc)
2847 {
2848 DIS(fprintf (logfile, "jump $p%u\n", dc->op2));
2849
2850 if (dc->op2 == PR_CCS)
2851 cris_evaluate_flags(dc);
2852 t_gen_mov_TN_preg(env_btarget, dc->op2);
2853 /* rete will often have low bit set to indicate delayslot. */
2854 tcg_gen_andi_tl(env_btarget, env_btarget, ~1);
2855 cris_cc_mask(dc, 0);
2856 cris_prepare_jmp(dc, JMP_INDIRECT);
2857 return 2;
2858 }
2859
2860 /* Jump and save. */
2861 static unsigned int dec_jas_r(DisasContext *dc)
2862 {
2863 DIS(fprintf (logfile, "jas $r%u, $p%u\n", dc->op1, dc->op2));
2864 cris_cc_mask(dc, 0);
2865 /* Store the return address in Pd. */
2866 tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]);
2867 if (dc->op2 > 15)
2868 abort();
2869 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4));
2870
2871 cris_prepare_jmp(dc, JMP_INDIRECT);
2872 return 2;
2873 }
2874
2875 static unsigned int dec_jas_im(DisasContext *dc)
2876 {
2877 uint32_t imm;
2878
2879 imm = ldl_code(dc->pc + 2);
2880
2881 DIS(fprintf (logfile, "jas 0x%x\n", imm));
2882 cris_cc_mask(dc, 0);
2883 /* Store the return address in Pd. */
2884 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8));
2885
2886 dc->jmp_pc = imm;
2887 cris_prepare_jmp(dc, JMP_DIRECT);
2888 return 6;
2889 }
2890
2891 static unsigned int dec_jasc_im(DisasContext *dc)
2892 {
2893 uint32_t imm;
2894
2895 imm = ldl_code(dc->pc + 2);
2896
2897 DIS(fprintf (logfile, "jasc 0x%x\n", imm));
2898 cris_cc_mask(dc, 0);
2899 /* Store the return address in Pd. */
2900 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8 + 4));
2901
2902 dc->jmp_pc = imm;
2903 cris_prepare_jmp(dc, JMP_DIRECT);
2904 return 6;
2905 }
2906
2907 static unsigned int dec_jasc_r(DisasContext *dc)
2908 {
2909 DIS(fprintf (logfile, "jasc_r $r%u, $p%u\n", dc->op1, dc->op2));
2910 cris_cc_mask(dc, 0);
2911 /* Store the return address in Pd. */
2912 tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]);
2913 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4 + 4));
2914 cris_prepare_jmp(dc, JMP_INDIRECT);
2915 return 2;
2916 }
2917
2918 static unsigned int dec_bcc_im(DisasContext *dc)
2919 {
2920 int32_t offset;
2921 uint32_t cond = dc->op2;
2922
2923 offset = ldsw_code(dc->pc + 2);
2924
2925 DIS(fprintf (logfile, "b%s %d pc=%x dst=%x\n",
2926 cc_name(cond), offset,
2927 dc->pc, dc->pc + offset));
2928
2929 cris_cc_mask(dc, 0);
2930 /* op2 holds the condition-code. */
2931 cris_prepare_cc_branch (dc, offset, cond);
2932 return 4;
2933 }
2934
2935 static unsigned int dec_bas_im(DisasContext *dc)
2936 {
2937 int32_t simm;
2938
2939
2940 simm = ldl_code(dc->pc + 2);
2941
2942 DIS(fprintf (logfile, "bas 0x%x, $p%u\n", dc->pc + simm, dc->op2));
2943 cris_cc_mask(dc, 0);
2944 /* Store the return address in Pd. */
2945 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8));
2946
2947 dc->jmp_pc = dc->pc + simm;
2948 cris_prepare_jmp(dc, JMP_DIRECT);
2949 return 6;
2950 }
2951
2952 static unsigned int dec_basc_im(DisasContext *dc)
2953 {
2954 int32_t simm;
2955 simm = ldl_code(dc->pc + 2);
2956
2957 DIS(fprintf (logfile, "basc 0x%x, $p%u\n", dc->pc + simm, dc->op2));
2958 cris_cc_mask(dc, 0);
2959 /* Store the return address in Pd. */
2960 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 12));
2961
2962 dc->jmp_pc = dc->pc + simm;
2963 cris_prepare_jmp(dc, JMP_DIRECT);
2964 return 6;
2965 }
2966
2967 static unsigned int dec_rfe_etc(DisasContext *dc)
2968 {
2969 cris_cc_mask(dc, 0);
2970
2971 if (dc->op2 == 15) /* ignore halt. */
2972 return 2;
2973
2974 switch (dc->op2 & 7) {
2975 case 2:
2976 /* rfe. */
2977 DIS(fprintf(logfile, "rfe\n"));
2978 cris_evaluate_flags(dc);
2979 gen_helper_rfe();
2980 dc->is_jmp = DISAS_UPDATE;
2981 break;
2982 case 5:
2983 /* rfn. */
2984 DIS(fprintf(logfile, "rfn\n"));
2985 cris_evaluate_flags(dc);
2986 gen_helper_rfn();
2987 dc->is_jmp = DISAS_UPDATE;
2988 break;
2989 case 6:
2990 DIS(fprintf(logfile, "break %d\n", dc->op1));
2991 cris_evaluate_flags (dc);
2992 /* break. */
2993 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2994
2995 /* Breaks start at 16 in the exception vector. */
2996 t_gen_mov_env_TN(trap_vector,
2997 tcg_const_tl(dc->op1 + 16));
2998 t_gen_raise_exception(EXCP_BREAK);
2999 dc->is_jmp = DISAS_UPDATE;
3000 break;
3001 default:
3002 printf ("op2=%x\n", dc->op2);
3003 BUG();
3004 break;
3005
3006 }
3007 return 2;
3008 }
3009
3010 static unsigned int dec_ftag_fidx_d_m(DisasContext *dc)
3011 {
3012 return 2;
3013 }
3014
3015 static unsigned int dec_ftag_fidx_i_m(DisasContext *dc)
3016 {
3017 return 2;
3018 }
3019
3020 static unsigned int dec_null(DisasContext *dc)
3021 {
3022 printf ("unknown insn pc=%x opc=%x op1=%x op2=%x\n",
3023 dc->pc, dc->opcode, dc->op1, dc->op2);
3024 fflush(NULL);
3025 BUG();
3026 return 2;
3027 }
3028
3029 static struct decoder_info {
3030 struct {
3031 uint32_t bits;
3032 uint32_t mask;
3033 };
3034 unsigned int (*dec)(DisasContext *dc);
3035 } decinfo[] = {
3036 /* Order matters here. */
3037 {DEC_MOVEQ, dec_moveq},
3038 {DEC_BTSTQ, dec_btstq},
3039 {DEC_CMPQ, dec_cmpq},
3040 {DEC_ADDOQ, dec_addoq},
3041 {DEC_ADDQ, dec_addq},
3042 {DEC_SUBQ, dec_subq},
3043 {DEC_ANDQ, dec_andq},
3044 {DEC_ORQ, dec_orq},
3045 {DEC_ASRQ, dec_asrq},
3046 {DEC_LSLQ, dec_lslq},
3047 {DEC_LSRQ, dec_lsrq},
3048 {DEC_BCCQ, dec_bccq},
3049
3050 {DEC_BCC_IM, dec_bcc_im},
3051 {DEC_JAS_IM, dec_jas_im},
3052 {DEC_JAS_R, dec_jas_r},
3053 {DEC_JASC_IM, dec_jasc_im},
3054 {DEC_JASC_R, dec_jasc_r},
3055 {DEC_BAS_IM, dec_bas_im},
3056 {DEC_BASC_IM, dec_basc_im},
3057 {DEC_JUMP_P, dec_jump_p},
3058 {DEC_LAPC_IM, dec_lapc_im},
3059 {DEC_LAPCQ, dec_lapcq},
3060
3061 {DEC_RFE_ETC, dec_rfe_etc},
3062 {DEC_ADDC_MR, dec_addc_mr},
3063
3064 {DEC_MOVE_MP, dec_move_mp},
3065 {DEC_MOVE_PM, dec_move_pm},
3066 {DEC_MOVEM_MR, dec_movem_mr},
3067 {DEC_MOVEM_RM, dec_movem_rm},
3068 {DEC_MOVE_PR, dec_move_pr},
3069 {DEC_SCC_R, dec_scc_r},
3070 {DEC_SETF, dec_setclrf},
3071 {DEC_CLEARF, dec_setclrf},
3072
3073 {DEC_MOVE_SR, dec_move_sr},
3074 {DEC_MOVE_RP, dec_move_rp},
3075 {DEC_SWAP_R, dec_swap_r},
3076 {DEC_ABS_R, dec_abs_r},
3077 {DEC_LZ_R, dec_lz_r},
3078 {DEC_MOVE_RS, dec_move_rs},
3079 {DEC_BTST_R, dec_btst_r},
3080 {DEC_ADDC_R, dec_addc_r},
3081
3082 {DEC_DSTEP_R, dec_dstep_r},
3083 {DEC_XOR_R, dec_xor_r},
3084 {DEC_MCP_R, dec_mcp_r},
3085 {DEC_CMP_R, dec_cmp_r},
3086
3087 {DEC_ADDI_R, dec_addi_r},
3088 {DEC_ADDI_ACR, dec_addi_acr},
3089
3090 {DEC_ADD_R, dec_add_r},
3091 {DEC_SUB_R, dec_sub_r},
3092
3093 {DEC_ADDU_R, dec_addu_r},
3094 {DEC_ADDS_R, dec_adds_r},
3095 {DEC_SUBU_R, dec_subu_r},
3096 {DEC_SUBS_R, dec_subs_r},
3097 {DEC_LSL_R, dec_lsl_r},
3098
3099 {DEC_AND_R, dec_and_r},
3100 {DEC_OR_R, dec_or_r},
3101 {DEC_BOUND_R, dec_bound_r},
3102 {DEC_ASR_R, dec_asr_r},
3103 {DEC_LSR_R, dec_lsr_r},
3104
3105 {DEC_MOVU_R, dec_movu_r},
3106 {DEC_MOVS_R, dec_movs_r},
3107 {DEC_NEG_R, dec_neg_r},
3108 {DEC_MOVE_R, dec_move_r},
3109
3110 {DEC_FTAG_FIDX_I_M, dec_ftag_fidx_i_m},
3111 {DEC_FTAG_FIDX_D_M, dec_ftag_fidx_d_m},
3112
3113 {DEC_MULS_R, dec_muls_r},
3114 {DEC_MULU_R, dec_mulu_r},
3115
3116 {DEC_ADDU_M, dec_addu_m},
3117 {DEC_ADDS_M, dec_adds_m},
3118 {DEC_SUBU_M, dec_subu_m},
3119 {DEC_SUBS_M, dec_subs_m},
3120
3121 {DEC_CMPU_M, dec_cmpu_m},
3122 {DEC_CMPS_M, dec_cmps_m},
3123 {DEC_MOVU_M, dec_movu_m},
3124 {DEC_MOVS_M, dec_movs_m},
3125
3126 {DEC_CMP_M, dec_cmp_m},
3127 {DEC_ADDO_M, dec_addo_m},
3128 {DEC_BOUND_M, dec_bound_m},
3129 {DEC_ADD_M, dec_add_m},
3130 {DEC_SUB_M, dec_sub_m},
3131 {DEC_AND_M, dec_and_m},
3132 {DEC_OR_M, dec_or_m},
3133 {DEC_MOVE_RM, dec_move_rm},
3134 {DEC_TEST_M, dec_test_m},
3135 {DEC_MOVE_MR, dec_move_mr},
3136
3137 {{0, 0}, dec_null}
3138 };
3139
3140 static inline unsigned int
3141 cris_decoder(DisasContext *dc)
3142 {
3143 unsigned int insn_len = 2;
3144 int i;
3145
3146 if (unlikely(loglevel & CPU_LOG_TB_OP))
3147 tcg_gen_debug_insn_start(dc->pc);
3148
3149 /* Load a halfword onto the instruction register. */
3150 dc->ir = lduw_code(dc->pc);
3151
3152 /* Now decode it. */
3153 dc->opcode = EXTRACT_FIELD(dc->ir, 4, 11);
3154 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 3);
3155 dc->op2 = EXTRACT_FIELD(dc->ir, 12, 15);
3156 dc->zsize = EXTRACT_FIELD(dc->ir, 4, 4);
3157 dc->zzsize = EXTRACT_FIELD(dc->ir, 4, 5);
3158 dc->postinc = EXTRACT_FIELD(dc->ir, 10, 10);
3159
3160 /* Large switch for all insns. */
3161 for (i = 0; i < sizeof decinfo / sizeof decinfo[0]; i++) {
3162 if ((dc->opcode & decinfo[i].mask) == decinfo[i].bits)
3163 {
3164 insn_len = decinfo[i].dec(dc);
3165 break;
3166 }
3167 }
3168
3169 #if !defined(CONFIG_USER_ONLY)
3170 /* Single-stepping ? */
3171 if (dc->tb_flags & S_FLAG) {
3172 int l1;
3173
3174 l1 = gen_new_label();
3175 tcg_gen_brcondi_tl(TCG_COND_NE, cpu_PR[PR_SPC], dc->pc, l1);
3176 /* We treat SPC as a break with an odd trap vector. */
3177 cris_evaluate_flags (dc);
3178 t_gen_mov_env_TN(trap_vector, tcg_const_tl(3));
3179 tcg_gen_movi_tl(env_pc, dc->pc + insn_len);
3180 tcg_gen_movi_tl(cpu_PR[PR_SPC], dc->pc + insn_len);
3181 t_gen_raise_exception(EXCP_BREAK);
3182 gen_set_label(l1);
3183 }
3184 #endif
3185 return insn_len;
3186 }
3187
3188 static void check_breakpoint(CPUState *env, DisasContext *dc)
3189 {
3190 CPUBreakpoint *bp;
3191
3192 if (unlikely(env->breakpoints)) {
3193 for (bp = env->breakpoints; bp != NULL; bp = bp->next) {
3194 if (bp->pc == dc->pc) {
3195 cris_evaluate_flags (dc);
3196 tcg_gen_movi_tl(env_pc, dc->pc);
3197 t_gen_raise_exception(EXCP_DEBUG);
3198 dc->is_jmp = DISAS_UPDATE;
3199 }
3200 }
3201 }
3202 }
3203
3204
3205 /*
3206 * Delay slots on QEMU/CRIS.
3207 *
3208 * If an exception hits on a delayslot, the core will let ERP (the Exception
3209 * Return Pointer) point to the branch (the previous) insn and set the lsb to
3210 * to give SW a hint that the exception actually hit on the dslot.
3211 *
3212 * CRIS expects all PC addresses to be 16-bit aligned. The lsb is ignored by
3213 * the core and any jmp to an odd addresses will mask off that lsb. It is
3214 * simply there to let sw know there was an exception on a dslot.
3215 *
3216 * When the software returns from an exception, the branch will re-execute.
3217 * On QEMU care needs to be taken when a branch+delayslot sequence is broken
3218 * and the branch and delayslot dont share pages.
3219 *
3220 * The TB contaning the branch insn will set up env->btarget and evaluate
3221 * env->btaken. When the translation loop exits we will note that the branch
3222 * sequence is broken and let env->dslot be the size of the branch insn (those
3223 * vary in length).
3224 *
3225 * The TB contaning the delayslot will have the PC of its real insn (i.e no lsb
3226 * set). It will also expect to have env->dslot setup with the size of the
3227 * delay slot so that env->pc - env->dslot point to the branch insn. This TB
3228 * will execute the dslot and take the branch, either to btarget or just one
3229 * insn ahead.
3230 *
3231 * When exceptions occur, we check for env->dslot in do_interrupt to detect
3232 * broken branch sequences and setup $erp accordingly (i.e let it point to the
3233 * branch and set lsb). Then env->dslot gets cleared so that the exception
3234 * handler can enter. When returning from exceptions (jump $erp) the lsb gets
3235 * masked off and we will reexecute the branch insn.
3236 *
3237 */
3238
3239 /* generate intermediate code for basic block 'tb'. */
3240 static void
3241 gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb,
3242 int search_pc)
3243 {
3244 uint16_t *gen_opc_end;
3245 uint32_t pc_start;
3246 unsigned int insn_len;
3247 int j, lj;
3248 struct DisasContext ctx;
3249 struct DisasContext *dc = &ctx;
3250 uint32_t next_page_start;
3251 target_ulong npc;
3252 int num_insns;
3253 int max_insns;
3254
3255 if (!logfile)
3256 logfile = stderr;
3257
3258 /* Odd PC indicates that branch is rexecuting due to exception in the
3259 * delayslot, like in real hw.
3260 */
3261 pc_start = tb->pc & ~1;
3262 dc->env = env;
3263 dc->tb = tb;
3264
3265 gen_opc_end = gen_opc_buf + OPC_MAX_SIZE;
3266
3267 dc->is_jmp = DISAS_NEXT;
3268 dc->ppc = pc_start;
3269 dc->pc = pc_start;
3270 dc->singlestep_enabled = env->singlestep_enabled;
3271 dc->flags_uptodate = 1;
3272 dc->flagx_known = 1;
3273 dc->flags_x = tb->flags & X_FLAG;
3274 dc->cc_x_uptodate = 0;
3275 dc->cc_mask = 0;
3276 dc->update_cc = 0;
3277
3278 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
3279 dc->cc_size_uptodate = -1;
3280
3281 /* Decode TB flags. */
3282 dc->tb_flags = tb->flags & (S_FLAG | P_FLAG | U_FLAG | X_FLAG);
3283 dc->delayed_branch = !!(tb->flags & 7);
3284 if (dc->delayed_branch)
3285 dc->jmp = JMP_INDIRECT;
3286 else
3287 dc->jmp = JMP_NOJMP;
3288
3289 dc->cpustate_changed = 0;
3290
3291 if (loglevel & CPU_LOG_TB_IN_ASM) {
3292 fprintf(logfile,
3293 "srch=%d pc=%x %x flg=%llx bt=%x ds=%u ccs=%x\n"
3294 "pid=%x usp=%x\n"
3295 "%x.%x.%x.%x\n"
3296 "%x.%x.%x.%x\n"
3297 "%x.%x.%x.%x\n"
3298 "%x.%x.%x.%x\n",
3299 search_pc, dc->pc, dc->ppc,
3300 (unsigned long long)tb->flags,
3301 env->btarget, (unsigned)tb->flags & 7,
3302 env->pregs[PR_CCS],
3303 env->pregs[PR_PID], env->pregs[PR_USP],
3304 env->regs[0], env->regs[1], env->regs[2], env->regs[3],
3305 env->regs[4], env->regs[5], env->regs[6], env->regs[7],
3306 env->regs[8], env->regs[9],
3307 env->regs[10], env->regs[11],
3308 env->regs[12], env->regs[13],
3309 env->regs[14], env->regs[15]);
3310 fprintf(logfile, "--------------\n");
3311 fprintf(logfile, "IN: %s\n", lookup_symbol(pc_start));
3312 }
3313
3314 next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
3315 lj = -1;
3316 num_insns = 0;
3317 max_insns = tb->cflags & CF_COUNT_MASK;
3318 if (max_insns == 0)
3319 max_insns = CF_COUNT_MASK;
3320
3321 gen_icount_start();
3322 do
3323 {
3324 check_breakpoint(env, dc);
3325
3326 if (search_pc) {
3327 j = gen_opc_ptr - gen_opc_buf;
3328 if (lj < j) {
3329 lj++;
3330 while (lj < j)
3331 gen_opc_instr_start[lj++] = 0;
3332 }
3333 if (dc->delayed_branch == 1)
3334 gen_opc_pc[lj] = dc->ppc | 1;
3335 else
3336 gen_opc_pc[lj] = dc->pc;
3337 gen_opc_instr_start[lj] = 1;
3338 gen_opc_icount[lj] = num_insns;
3339 }
3340
3341 /* Pretty disas. */
3342 DIS(fprintf(logfile, "%8.8x:\t", dc->pc));
3343
3344 if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO))
3345 gen_io_start();
3346 dc->clear_x = 1;
3347
3348 insn_len = cris_decoder(dc);
3349 dc->ppc = dc->pc;
3350 dc->pc += insn_len;
3351 if (dc->clear_x)
3352 cris_clear_x_flag(dc);
3353
3354 num_insns++;
3355 /* Check for delayed branches here. If we do it before
3356 actually generating any host code, the simulator will just
3357 loop doing nothing for on this program location. */
3358 if (dc->delayed_branch) {
3359 dc->delayed_branch--;
3360 if (dc->delayed_branch == 0)
3361 {
3362 if (tb->flags & 7)
3363 t_gen_mov_env_TN(dslot,
3364 tcg_const_tl(0));
3365 if (dc->jmp == JMP_DIRECT) {
3366 dc->is_jmp = DISAS_NEXT;
3367 } else {
3368 t_gen_cc_jmp(env_btarget,
3369 tcg_const_tl(dc->pc));
3370 dc->is_jmp = DISAS_JUMP;
3371 }
3372 break;
3373 }
3374 }
3375
3376 /* If we are rexecuting a branch due to exceptions on
3377 delay slots dont break. */
3378 if (!(tb->pc & 1) && env->singlestep_enabled)
3379 break;
3380 } while (!dc->is_jmp && !dc->cpustate_changed
3381 && gen_opc_ptr < gen_opc_end
3382 && (dc->pc < next_page_start)
3383 && num_insns < max_insns);
3384
3385 npc = dc->pc;
3386 if (dc->jmp == JMP_DIRECT && !dc->delayed_branch)
3387 npc = dc->jmp_pc;
3388
3389 if (tb->cflags & CF_LAST_IO)
3390 gen_io_end();
3391 /* Force an update if the per-tb cpu state has changed. */
3392 if (dc->is_jmp == DISAS_NEXT
3393 && (dc->cpustate_changed || !dc->flagx_known
3394 || (dc->flags_x != (tb->flags & X_FLAG)))) {
3395 dc->is_jmp = DISAS_UPDATE;
3396 tcg_gen_movi_tl(env_pc, npc);
3397 }
3398 /* Broken branch+delayslot sequence. */
3399 if (dc->delayed_branch == 1) {
3400 /* Set env->dslot to the size of the branch insn. */
3401 t_gen_mov_env_TN(dslot, tcg_const_tl(dc->pc - dc->ppc));
3402 cris_store_direct_jmp(dc);
3403 }
3404
3405 cris_evaluate_flags (dc);
3406
3407 if (unlikely(env->singlestep_enabled)) {
3408 if (dc->is_jmp == DISAS_NEXT)
3409 tcg_gen_movi_tl(env_pc, npc);
3410 t_gen_raise_exception(EXCP_DEBUG);
3411 } else {
3412 switch(dc->is_jmp) {
3413 case DISAS_NEXT:
3414 gen_goto_tb(dc, 1, npc);
3415 break;
3416 default:
3417 case DISAS_JUMP:
3418 case DISAS_UPDATE:
3419 /* indicate that the hash table must be used
3420 to find the next TB */
3421 tcg_gen_exit_tb(0);
3422 break;
3423 case DISAS_SWI:
3424 case DISAS_TB_JUMP:
3425 /* nothing more to generate */
3426 break;
3427 }
3428 }
3429 gen_icount_end(tb, num_insns);
3430 *gen_opc_ptr = INDEX_op_end;
3431 if (search_pc) {
3432 j = gen_opc_ptr - gen_opc_buf;
3433 lj++;
3434 while (lj <= j)
3435 gen_opc_instr_start[lj++] = 0;
3436 } else {
3437 tb->size = dc->pc - pc_start;
3438 tb->icount = num_insns;
3439 }
3440
3441 #ifdef DEBUG_DISAS
3442 #if !DISAS_CRIS
3443 if (loglevel & CPU_LOG_TB_IN_ASM) {
3444 target_disas(logfile, pc_start, dc->pc - pc_start, 0);
3445 fprintf(logfile, "\nisize=%d osize=%zd\n",
3446 dc->pc - pc_start, gen_opc_ptr - gen_opc_buf);
3447 }
3448 #endif
3449 #endif
3450 }
3451
3452 void gen_intermediate_code (CPUState *env, struct TranslationBlock *tb)
3453 {
3454 gen_intermediate_code_internal(env, tb, 0);
3455 }
3456
3457 void gen_intermediate_code_pc (CPUState *env, struct TranslationBlock *tb)
3458 {
3459 gen_intermediate_code_internal(env, tb, 1);
3460 }
3461
3462 void cpu_dump_state (CPUState *env, FILE *f,
3463 int (*cpu_fprintf)(FILE *f, const char *fmt, ...),
3464 int flags)
3465 {
3466 int i;
3467 uint32_t srs;
3468
3469 if (!env || !f)
3470 return;
3471
3472 cpu_fprintf(f, "PC=%x CCS=%x btaken=%d btarget=%x\n"
3473 "cc_op=%d cc_src=%d cc_dest=%d cc_result=%x cc_mask=%x\n",
3474 env->pc, env->pregs[PR_CCS], env->btaken, env->btarget,
3475 env->cc_op,
3476 env->cc_src, env->cc_dest, env->cc_result, env->cc_mask);
3477
3478
3479 for (i = 0; i < 16; i++) {
3480 cpu_fprintf(f, "r%2.2d=%8.8x ", i, env->regs[i]);
3481 if ((i + 1) % 4 == 0)
3482 cpu_fprintf(f, "\n");
3483 }
3484 cpu_fprintf(f, "\nspecial regs:\n");
3485 for (i = 0; i < 16; i++) {
3486 cpu_fprintf(f, "p%2.2d=%8.8x ", i, env->pregs[i]);
3487 if ((i + 1) % 4 == 0)
3488 cpu_fprintf(f, "\n");
3489 }
3490 srs = env->pregs[PR_SRS];
3491 cpu_fprintf(f, "\nsupport function regs bank %x:\n", srs);
3492 if (srs < 256) {
3493 for (i = 0; i < 16; i++) {
3494 cpu_fprintf(f, "s%2.2d=%8.8x ",
3495 i, env->sregs[srs][i]);
3496 if ((i + 1) % 4 == 0)
3497 cpu_fprintf(f, "\n");
3498 }
3499 }
3500 cpu_fprintf(f, "\n\n");
3501
3502 }
3503
3504 CPUCRISState *cpu_cris_init (const char *cpu_model)
3505 {
3506 CPUCRISState *env;
3507 static int tcg_initialized = 0;
3508 int i;
3509
3510 env = qemu_mallocz(sizeof(CPUCRISState));
3511 if (!env)
3512 return NULL;
3513
3514 cpu_exec_init(env);
3515 cpu_reset(env);
3516
3517 if (tcg_initialized)
3518 return env;
3519
3520 tcg_initialized = 1;
3521
3522 cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
3523 cc_x = tcg_global_mem_new(TCG_AREG0,
3524 offsetof(CPUState, cc_x), "cc_x");
3525 cc_src = tcg_global_mem_new(TCG_AREG0,
3526 offsetof(CPUState, cc_src), "cc_src");
3527 cc_dest = tcg_global_mem_new(TCG_AREG0,
3528 offsetof(CPUState, cc_dest),
3529 "cc_dest");
3530 cc_result = tcg_global_mem_new(TCG_AREG0,
3531 offsetof(CPUState, cc_result),
3532 "cc_result");
3533 cc_op = tcg_global_mem_new(TCG_AREG0,
3534 offsetof(CPUState, cc_op), "cc_op");
3535 cc_size = tcg_global_mem_new(TCG_AREG0,
3536 offsetof(CPUState, cc_size),
3537 "cc_size");
3538 cc_mask = tcg_global_mem_new(TCG_AREG0,
3539 offsetof(CPUState, cc_mask),
3540 "cc_mask");
3541
3542 env_pc = tcg_global_mem_new(TCG_AREG0,
3543 offsetof(CPUState, pc),
3544 "pc");
3545 env_btarget = tcg_global_mem_new(TCG_AREG0,
3546 offsetof(CPUState, btarget),
3547 "btarget");
3548 env_btaken = tcg_global_mem_new(TCG_AREG0,
3549 offsetof(CPUState, btaken),
3550 "btaken");
3551 for (i = 0; i < 16; i++) {
3552 cpu_R[i] = tcg_global_mem_new(TCG_AREG0,
3553 offsetof(CPUState, regs[i]),
3554 regnames[i]);
3555 }
3556 for (i = 0; i < 16; i++) {
3557 cpu_PR[i] = tcg_global_mem_new(TCG_AREG0,
3558 offsetof(CPUState, pregs[i]),
3559 pregnames[i]);
3560 }
3561
3562 #define GEN_HELPER 2
3563 #include "helper.h"
3564
3565 return env;
3566 }
3567
3568 void cpu_reset (CPUCRISState *env)
3569 {
3570 memset(env, 0, offsetof(CPUCRISState, breakpoints));
3571 tlb_flush(env, 1);
3572
3573 env->pregs[PR_VR] = 32;
3574 #if defined(CONFIG_USER_ONLY)
3575 /* start in user mode with interrupts enabled. */
3576 env->pregs[PR_CCS] |= U_FLAG | I_FLAG;
3577 #else
3578 env->pregs[PR_CCS] = 0;
3579 #endif
3580 }
3581
3582 void gen_pc_load(CPUState *env, struct TranslationBlock *tb,
3583 unsigned long searched_pc, int pc_pos, void *puc)
3584 {
3585 env->pc = gen_opc_pc[pc_pos];
3586 }
jz4740 based target emulation