?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
memory: unify loops to sync dirty log bitmap
[qemu/ar7.git] / target / microblaze / translate.c
blob7628b0e25bcf2fe08f135ab11fade7c08dc47194
1 /*
2 * Xilinx MicroBlaze emulation for qemu: main translation routines.
3 *
4 * Copyright (c) 2009 Edgar E. Iglesias.
5 * Copyright (c) 2009-2012 PetaLogix Qld Pty Ltd.
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
19 */
20
21 #include "qemu/osdep.h"
22 #include "cpu.h"
23 #include "disas/disas.h"
24 #include "exec/exec-all.h"
25 #include "tcg-op.h"
26 #include "exec/helper-proto.h"
27 #include "microblaze-decode.h"
28 #include "exec/cpu_ldst.h"
29 #include "exec/helper-gen.h"
30 #include "exec/translator.h"
31
32 #include "trace-tcg.h"
33 #include "exec/log.h"
34
35
36 #define SIM_COMPAT 0
37 #define DISAS_GNU 1
38 #define DISAS_MB 1
39 #if DISAS_MB && !SIM_COMPAT
40 # define LOG_DIS(...) qemu_log_mask(CPU_LOG_TB_IN_ASM, ## __VA_ARGS__)
41 #else
42 # define LOG_DIS(...) do { } while (0)
43 #endif
44
45 #define D(x)
46
47 #define EXTRACT_FIELD(src, start, end) \
48 (((src) >> start) & ((1 << (end - start + 1)) - 1))
49
50 /* is_jmp field values */
51 #define DISAS_JUMP DISAS_TARGET_0 /* only pc was modified dynamically */
52 #define DISAS_UPDATE DISAS_TARGET_1 /* cpu state was modified dynamically */
53 #define DISAS_TB_JUMP DISAS_TARGET_2 /* only pc was modified statically */
54
55 static TCGv env_debug;
56 static TCGv cpu_R[32];
57 static TCGv cpu_SR[18];
58 static TCGv env_imm;
59 static TCGv env_btaken;
60 static TCGv env_btarget;
61 static TCGv env_iflags;
62 static TCGv env_res_addr;
63 static TCGv env_res_val;
64
65 #include "exec/gen-icount.h"
66
67 /* This is the state at translation time. */
68 typedef struct DisasContext {
69 MicroBlazeCPU *cpu;
70 target_ulong pc;
71
72 /* Decoder. */
73 int type_b;
74 uint32_t ir;
75 uint8_t opcode;
76 uint8_t rd, ra, rb;
77 uint16_t imm;
78
79 unsigned int cpustate_changed;
80 unsigned int delayed_branch;
81 unsigned int tb_flags, synced_flags; /* tb dependent flags. */
82 unsigned int clear_imm;
83 int is_jmp;
84
85 #define JMP_NOJMP 0
86 #define JMP_DIRECT 1
87 #define JMP_DIRECT_CC 2
88 #define JMP_INDIRECT 3
89 unsigned int jmp;
90 uint32_t jmp_pc;
91
92 int abort_at_next_insn;
93 int nr_nops;
94 struct TranslationBlock *tb;
95 int singlestep_enabled;
96 } DisasContext;
97
98 static const char *regnames[] =
99 {
100 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
101 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
102 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
103 "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
104 };
105
106 static const char *special_regnames[] =
107 {
108 "rpc", "rmsr", "sr2", "sr3", "sr4", "sr5", "sr6", "sr7",
109 "sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15",
110 "sr16", "sr17", "sr18"
111 };
112
113 static inline void t_sync_flags(DisasContext *dc)
114 {
115 /* Synch the tb dependent flags between translator and runtime. */
116 if (dc->tb_flags != dc->synced_flags) {
117 tcg_gen_movi_tl(env_iflags, dc->tb_flags);
118 dc->synced_flags = dc->tb_flags;
119 }
120 }
121
122 static inline void t_gen_raise_exception(DisasContext *dc, uint32_t index)
123 {
124 TCGv_i32 tmp = tcg_const_i32(index);
125
126 t_sync_flags(dc);
127 tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc);
128 gen_helper_raise_exception(cpu_env, tmp);
129 tcg_temp_free_i32(tmp);
130 dc->is_jmp = DISAS_UPDATE;
131 }
132
133 static inline bool use_goto_tb(DisasContext *dc, target_ulong dest)
134 {
135 #ifndef CONFIG_USER_ONLY
136 return (dc->tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK);
137 #else
138 return true;
139 #endif
140 }
141
142 static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest)
143 {
144 if (use_goto_tb(dc, dest)) {
145 tcg_gen_goto_tb(n);
146 tcg_gen_movi_tl(cpu_SR[SR_PC], dest);
147 tcg_gen_exit_tb((uintptr_t)dc->tb + n);
148 } else {
149 tcg_gen_movi_tl(cpu_SR[SR_PC], dest);
150 tcg_gen_exit_tb(0);
151 }
152 }
153
154 static void read_carry(DisasContext *dc, TCGv d)
155 {
156 tcg_gen_shri_tl(d, cpu_SR[SR_MSR], 31);
157 }
158
159 /*
160 * write_carry sets the carry bits in MSR based on bit 0 of v.
161 * v[31:1] are ignored.
162 */
163 static void write_carry(DisasContext *dc, TCGv v)
164 {
165 TCGv t0 = tcg_temp_new();
166 tcg_gen_shli_tl(t0, v, 31);
167 tcg_gen_sari_tl(t0, t0, 31);
168 tcg_gen_andi_tl(t0, t0, (MSR_C | MSR_CC));
169 tcg_gen_andi_tl(cpu_SR[SR_MSR], cpu_SR[SR_MSR],
170 ~(MSR_C | MSR_CC));
171 tcg_gen_or_tl(cpu_SR[SR_MSR], cpu_SR[SR_MSR], t0);
172 tcg_temp_free(t0);
173 }
174
175 static void write_carryi(DisasContext *dc, bool carry)
176 {
177 TCGv t0 = tcg_temp_new();
178 tcg_gen_movi_tl(t0, carry);
179 write_carry(dc, t0);
180 tcg_temp_free(t0);
181 }
182
183 /* True if ALU operand b is a small immediate that may deserve
184 faster treatment. */
185 static inline int dec_alu_op_b_is_small_imm(DisasContext *dc)
186 {
187 /* Immediate insn without the imm prefix ? */
188 return dc->type_b && !(dc->tb_flags & IMM_FLAG);
189 }
190
191 static inline TCGv *dec_alu_op_b(DisasContext *dc)
192 {
193 if (dc->type_b) {
194 if (dc->tb_flags & IMM_FLAG)
195 tcg_gen_ori_tl(env_imm, env_imm, dc->imm);
196 else
197 tcg_gen_movi_tl(env_imm, (int32_t)((int16_t)dc->imm));
198 return &env_imm;
199 } else
200 return &cpu_R[dc->rb];
201 }
202
203 static void dec_add(DisasContext *dc)
204 {
205 unsigned int k, c;
206 TCGv cf;
207
208 k = dc->opcode & 4;
209 c = dc->opcode & 2;
210
211 LOG_DIS("add%s%s%s r%d r%d r%d\n",
212 dc->type_b ? "i" : "", k ? "k" : "", c ? "c" : "",
213 dc->rd, dc->ra, dc->rb);
214
215 /* Take care of the easy cases first. */
216 if (k) {
217 /* k - keep carry, no need to update MSR. */
218 /* If rd == r0, it's a nop. */
219 if (dc->rd) {
220 tcg_gen_add_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
221
222 if (c) {
223 /* c - Add carry into the result. */
224 cf = tcg_temp_new();
225
226 read_carry(dc, cf);
227 tcg_gen_add_tl(cpu_R[dc->rd], cpu_R[dc->rd], cf);
228 tcg_temp_free(cf);
229 }
230 }
231 return;
232 }
233
234 /* From now on, we can assume k is zero. So we need to update MSR. */
235 /* Extract carry. */
236 cf = tcg_temp_new();
237 if (c) {
238 read_carry(dc, cf);
239 } else {
240 tcg_gen_movi_tl(cf, 0);
241 }
242
243 if (dc->rd) {
244 TCGv ncf = tcg_temp_new();
245 gen_helper_carry(ncf, cpu_R[dc->ra], *(dec_alu_op_b(dc)), cf);
246 tcg_gen_add_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
247 tcg_gen_add_tl(cpu_R[dc->rd], cpu_R[dc->rd], cf);
248 write_carry(dc, ncf);
249 tcg_temp_free(ncf);
250 } else {
251 gen_helper_carry(cf, cpu_R[dc->ra], *(dec_alu_op_b(dc)), cf);
252 write_carry(dc, cf);
253 }
254 tcg_temp_free(cf);
255 }
256
257 static void dec_sub(DisasContext *dc)
258 {
259 unsigned int u, cmp, k, c;
260 TCGv cf, na;
261
262 u = dc->imm & 2;
263 k = dc->opcode & 4;
264 c = dc->opcode & 2;
265 cmp = (dc->imm & 1) && (!dc->type_b) && k;
266
267 if (cmp) {
268 LOG_DIS("cmp%s r%d, r%d ir=%x\n", u ? "u" : "", dc->rd, dc->ra, dc->ir);
269 if (dc->rd) {
270 if (u)
271 gen_helper_cmpu(cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
272 else
273 gen_helper_cmp(cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
274 }
275 return;
276 }
277
278 LOG_DIS("sub%s%s r%d, r%d r%d\n",
279 k ? "k" : "", c ? "c" : "", dc->rd, dc->ra, dc->rb);
280
281 /* Take care of the easy cases first. */
282 if (k) {
283 /* k - keep carry, no need to update MSR. */
284 /* If rd == r0, it's a nop. */
285 if (dc->rd) {
286 tcg_gen_sub_tl(cpu_R[dc->rd], *(dec_alu_op_b(dc)), cpu_R[dc->ra]);
287
288 if (c) {
289 /* c - Add carry into the result. */
290 cf = tcg_temp_new();
291
292 read_carry(dc, cf);
293 tcg_gen_add_tl(cpu_R[dc->rd], cpu_R[dc->rd], cf);
294 tcg_temp_free(cf);
295 }
296 }
297 return;
298 }
299
300 /* From now on, we can assume k is zero. So we need to update MSR. */
301 /* Extract carry. And complement a into na. */
302 cf = tcg_temp_new();
303 na = tcg_temp_new();
304 if (c) {
305 read_carry(dc, cf);
306 } else {
307 tcg_gen_movi_tl(cf, 1);
308 }
309
310 /* d = b + ~a + c. carry defaults to 1. */
311 tcg_gen_not_tl(na, cpu_R[dc->ra]);
312
313 if (dc->rd) {
314 TCGv ncf = tcg_temp_new();
315 gen_helper_carry(ncf, na, *(dec_alu_op_b(dc)), cf);
316 tcg_gen_add_tl(cpu_R[dc->rd], na, *(dec_alu_op_b(dc)));
317 tcg_gen_add_tl(cpu_R[dc->rd], cpu_R[dc->rd], cf);
318 write_carry(dc, ncf);
319 tcg_temp_free(ncf);
320 } else {
321 gen_helper_carry(cf, na, *(dec_alu_op_b(dc)), cf);
322 write_carry(dc, cf);
323 }
324 tcg_temp_free(cf);
325 tcg_temp_free(na);
326 }
327
328 static void dec_pattern(DisasContext *dc)
329 {
330 unsigned int mode;
331
332 if ((dc->tb_flags & MSR_EE_FLAG)
333 && (dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)
334 && !dc->cpu->cfg.use_pcmp_instr) {
335 tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP);
336 t_gen_raise_exception(dc, EXCP_HW_EXCP);
337 }
338
339 mode = dc->opcode & 3;
340 switch (mode) {
341 case 0:
342 /* pcmpbf. */
343 LOG_DIS("pcmpbf r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
344 if (dc->rd)
345 gen_helper_pcmpbf(cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
346 break;
347 case 2:
348 LOG_DIS("pcmpeq r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
349 if (dc->rd) {
350 tcg_gen_setcond_tl(TCG_COND_EQ, cpu_R[dc->rd],
351 cpu_R[dc->ra], cpu_R[dc->rb]);
352 }
353 break;
354 case 3:
355 LOG_DIS("pcmpne r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
356 if (dc->rd) {
357 tcg_gen_setcond_tl(TCG_COND_NE, cpu_R[dc->rd],
358 cpu_R[dc->ra], cpu_R[dc->rb]);
359 }
360 break;
361 default:
362 cpu_abort(CPU(dc->cpu),
363 "unsupported pattern insn opcode=%x\n", dc->opcode);
364 break;
365 }
366 }
367
368 static void dec_and(DisasContext *dc)
369 {
370 unsigned int not;
371
372 if (!dc->type_b && (dc->imm & (1 << 10))) {
373 dec_pattern(dc);
374 return;
375 }
376
377 not = dc->opcode & (1 << 1);
378 LOG_DIS("and%s\n", not ? "n" : "");
379
380 if (!dc->rd)
381 return;
382
383 if (not) {
384 tcg_gen_andc_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
385 } else
386 tcg_gen_and_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
387 }
388
389 static void dec_or(DisasContext *dc)
390 {
391 if (!dc->type_b && (dc->imm & (1 << 10))) {
392 dec_pattern(dc);
393 return;
394 }
395
396 LOG_DIS("or r%d r%d r%d imm=%x\n", dc->rd, dc->ra, dc->rb, dc->imm);
397 if (dc->rd)
398 tcg_gen_or_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
399 }
400
401 static void dec_xor(DisasContext *dc)
402 {
403 if (!dc->type_b && (dc->imm & (1 << 10))) {
404 dec_pattern(dc);
405 return;
406 }
407
408 LOG_DIS("xor r%d\n", dc->rd);
409 if (dc->rd)
410 tcg_gen_xor_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
411 }
412
413 static inline void msr_read(DisasContext *dc, TCGv d)
414 {
415 tcg_gen_mov_tl(d, cpu_SR[SR_MSR]);
416 }
417
418 static inline void msr_write(DisasContext *dc, TCGv v)
419 {
420 TCGv t;
421
422 t = tcg_temp_new();
423 dc->cpustate_changed = 1;
424 /* PVR bit is not writable. */
425 tcg_gen_andi_tl(t, v, ~MSR_PVR);
426 tcg_gen_andi_tl(cpu_SR[SR_MSR], cpu_SR[SR_MSR], MSR_PVR);
427 tcg_gen_or_tl(cpu_SR[SR_MSR], cpu_SR[SR_MSR], v);
428 tcg_temp_free(t);
429 }
430
431 static void dec_msr(DisasContext *dc)
432 {
433 CPUState *cs = CPU(dc->cpu);
434 TCGv t0, t1;
435 unsigned int sr, to, rn;
436 int mem_index = cpu_mmu_index(&dc->cpu->env, false);
437
438 sr = dc->imm & ((1 << 14) - 1);
439 to = dc->imm & (1 << 14);
440 dc->type_b = 1;
441 if (to)
442 dc->cpustate_changed = 1;
443
444 /* msrclr and msrset. */
445 if (!(dc->imm & (1 << 15))) {
446 unsigned int clr = dc->ir & (1 << 16);
447
448 LOG_DIS("msr%s r%d imm=%x\n", clr ? "clr" : "set",
449 dc->rd, dc->imm);
450
451 if (!dc->cpu->cfg.use_msr_instr) {
452 /* nop??? */
453 return;
454 }
455
456 if ((dc->tb_flags & MSR_EE_FLAG)
457 && mem_index == MMU_USER_IDX && (dc->imm != 4 && dc->imm != 0)) {
458 tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN);
459 t_gen_raise_exception(dc, EXCP_HW_EXCP);
460 return;
461 }
462
463 if (dc->rd)
464 msr_read(dc, cpu_R[dc->rd]);
465
466 t0 = tcg_temp_new();
467 t1 = tcg_temp_new();
468 msr_read(dc, t0);
469 tcg_gen_mov_tl(t1, *(dec_alu_op_b(dc)));
470
471 if (clr) {
472 tcg_gen_not_tl(t1, t1);
473 tcg_gen_and_tl(t0, t0, t1);
474 } else
475 tcg_gen_or_tl(t0, t0, t1);
476 msr_write(dc, t0);
477 tcg_temp_free(t0);
478 tcg_temp_free(t1);
479 tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc + 4);
480 dc->is_jmp = DISAS_UPDATE;
481 return;
482 }
483
484 if (to) {
485 if ((dc->tb_flags & MSR_EE_FLAG)
486 && mem_index == MMU_USER_IDX) {
487 tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN);
488 t_gen_raise_exception(dc, EXCP_HW_EXCP);
489 return;
490 }
491 }
492
493 #if !defined(CONFIG_USER_ONLY)
494 /* Catch read/writes to the mmu block. */
495 if ((sr & ~0xff) == 0x1000) {
496 sr &= 7;
497 LOG_DIS("m%ss sr%d r%d imm=%x\n", to ? "t" : "f", sr, dc->ra, dc->imm);
498 if (to)
499 gen_helper_mmu_write(cpu_env, tcg_const_tl(sr), cpu_R[dc->ra]);
500 else
501 gen_helper_mmu_read(cpu_R[dc->rd], cpu_env, tcg_const_tl(sr));
502 return;
503 }
504 #endif
505
506 if (to) {
507 LOG_DIS("m%ss sr%x r%d imm=%x\n", to ? "t" : "f", sr, dc->ra, dc->imm);
508 switch (sr) {
509 case 0:
510 break;
511 case 1:
512 msr_write(dc, cpu_R[dc->ra]);
513 break;
514 case 0x3:
515 tcg_gen_mov_tl(cpu_SR[SR_EAR], cpu_R[dc->ra]);
516 break;
517 case 0x5:
518 tcg_gen_mov_tl(cpu_SR[SR_ESR], cpu_R[dc->ra]);
519 break;
520 case 0x7:
521 tcg_gen_andi_tl(cpu_SR[SR_FSR], cpu_R[dc->ra], 31);
522 break;
523 case 0x800:
524 tcg_gen_st_tl(cpu_R[dc->ra], cpu_env, offsetof(CPUMBState, slr));
525 break;
526 case 0x802:
527 tcg_gen_st_tl(cpu_R[dc->ra], cpu_env, offsetof(CPUMBState, shr));
528 break;
529 default:
530 cpu_abort(CPU(dc->cpu), "unknown mts reg %x\n", sr);
531 break;
532 }
533 } else {
534 LOG_DIS("m%ss r%d sr%x imm=%x\n", to ? "t" : "f", dc->rd, sr, dc->imm);
535
536 switch (sr) {
537 case 0:
538 tcg_gen_movi_tl(cpu_R[dc->rd], dc->pc);
539 break;
540 case 1:
541 msr_read(dc, cpu_R[dc->rd]);
542 break;
543 case 0x3:
544 tcg_gen_mov_tl(cpu_R[dc->rd], cpu_SR[SR_EAR]);
545 break;
546 case 0x5:
547 tcg_gen_mov_tl(cpu_R[dc->rd], cpu_SR[SR_ESR]);
548 break;
549 case 0x7:
550 tcg_gen_mov_tl(cpu_R[dc->rd], cpu_SR[SR_FSR]);
551 break;
552 case 0xb:
553 tcg_gen_mov_tl(cpu_R[dc->rd], cpu_SR[SR_BTR]);
554 break;
555 case 0x800:
556 tcg_gen_ld_tl(cpu_R[dc->rd], cpu_env, offsetof(CPUMBState, slr));
557 break;
558 case 0x802:
559 tcg_gen_ld_tl(cpu_R[dc->rd], cpu_env, offsetof(CPUMBState, shr));
560 break;
561 case 0x2000:
562 case 0x2001:
563 case 0x2002:
564 case 0x2003:
565 case 0x2004:
566 case 0x2005:
567 case 0x2006:
568 case 0x2007:
569 case 0x2008:
570 case 0x2009:
571 case 0x200a:
572 case 0x200b:
573 case 0x200c:
574 rn = sr & 0xf;
575 tcg_gen_ld_tl(cpu_R[dc->rd],
576 cpu_env, offsetof(CPUMBState, pvr.regs[rn]));
577 break;
578 default:
579 cpu_abort(cs, "unknown mfs reg %x\n", sr);
580 break;
581 }
582 }
583
584 if (dc->rd == 0) {
585 tcg_gen_movi_tl(cpu_R[0], 0);
586 }
587 }
588
589 /* Multiplier unit. */
590 static void dec_mul(DisasContext *dc)
591 {
592 TCGv tmp;
593 unsigned int subcode;
594
595 if ((dc->tb_flags & MSR_EE_FLAG)
596 && (dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)
597 && !dc->cpu->cfg.use_hw_mul) {
598 tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP);
599 t_gen_raise_exception(dc, EXCP_HW_EXCP);
600 return;
601 }
602
603 subcode = dc->imm & 3;
604
605 if (dc->type_b) {
606 LOG_DIS("muli r%d r%d %x\n", dc->rd, dc->ra, dc->imm);
607 tcg_gen_mul_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
608 return;
609 }
610
611 /* mulh, mulhsu and mulhu are not available if C_USE_HW_MUL is < 2. */
612 if (subcode >= 1 && subcode <= 3 && dc->cpu->cfg.use_hw_mul < 2) {
613 /* nop??? */
614 }
615
616 tmp = tcg_temp_new();
617 switch (subcode) {
618 case 0:
619 LOG_DIS("mul r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
620 tcg_gen_mul_tl(cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
621 break;
622 case 1:
623 LOG_DIS("mulh r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
624 tcg_gen_muls2_tl(tmp, cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
625 break;
626 case 2:
627 LOG_DIS("mulhsu r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
628 tcg_gen_mulsu2_tl(tmp, cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
629 break;
630 case 3:
631 LOG_DIS("mulhu r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
632 tcg_gen_mulu2_tl(tmp, cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
633 break;
634 default:
635 cpu_abort(CPU(dc->cpu), "unknown MUL insn %x\n", subcode);
636 break;
637 }
638 tcg_temp_free(tmp);
639 }
640
641 /* Div unit. */
642 static void dec_div(DisasContext *dc)
643 {
644 unsigned int u;
645
646 u = dc->imm & 2;
647 LOG_DIS("div\n");
648
649 if ((dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)
650 && !dc->cpu->cfg.use_div) {
651 tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP);
652 t_gen_raise_exception(dc, EXCP_HW_EXCP);
653 }
654
655 if (u)
656 gen_helper_divu(cpu_R[dc->rd], cpu_env, *(dec_alu_op_b(dc)),
657 cpu_R[dc->ra]);
658 else
659 gen_helper_divs(cpu_R[dc->rd], cpu_env, *(dec_alu_op_b(dc)),
660 cpu_R[dc->ra]);
661 if (!dc->rd)
662 tcg_gen_movi_tl(cpu_R[dc->rd], 0);
663 }
664
665 static void dec_barrel(DisasContext *dc)
666 {
667 TCGv t0;
668 unsigned int imm_w, imm_s;
669 bool s, t, e = false, i = false;
670
671 if ((dc->tb_flags & MSR_EE_FLAG)
672 && (dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)
673 && !dc->cpu->cfg.use_barrel) {
674 tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP);
675 t_gen_raise_exception(dc, EXCP_HW_EXCP);
676 return;
677 }
678
679 if (dc->type_b) {
680 /* Insert and extract are only available in immediate mode. */
681 i = extract32(dc->imm, 15, 1);
682 e = extract32(dc->imm, 14, 1);
683 }
684 s = extract32(dc->imm, 10, 1);
685 t = extract32(dc->imm, 9, 1);
686 imm_w = extract32(dc->imm, 6, 5);
687 imm_s = extract32(dc->imm, 0, 5);
688
689 LOG_DIS("bs%s%s%s r%d r%d r%d\n",
690 e ? "e" : "",
691 s ? "l" : "r", t ? "a" : "l", dc->rd, dc->ra, dc->rb);
692
693 if (e) {
694 if (imm_w + imm_s > 32 || imm_w == 0) {
695 /* These inputs have an undefined behavior. */
696 qemu_log_mask(LOG_GUEST_ERROR, "bsefi: Bad input w=%d s=%d\n",
697 imm_w, imm_s);
698 } else {
699 tcg_gen_extract_i32(cpu_R[dc->rd], cpu_R[dc->ra], imm_s, imm_w);
700 }
701 } else if (i) {
702 int width = imm_w - imm_s + 1;
703
704 if (imm_w < imm_s) {
705 /* These inputs have an undefined behavior. */
706 qemu_log_mask(LOG_GUEST_ERROR, "bsifi: Bad input w=%d s=%d\n",
707 imm_w, imm_s);
708 } else {
709 tcg_gen_deposit_i32(cpu_R[dc->rd], cpu_R[dc->rd], cpu_R[dc->ra],
710 imm_s, width);
711 }
712 } else {
713 t0 = tcg_temp_new();
714
715 tcg_gen_mov_tl(t0, *(dec_alu_op_b(dc)));
716 tcg_gen_andi_tl(t0, t0, 31);
717
718 if (s) {
719 tcg_gen_shl_tl(cpu_R[dc->rd], cpu_R[dc->ra], t0);
720 } else {
721 if (t) {
722 tcg_gen_sar_tl(cpu_R[dc->rd], cpu_R[dc->ra], t0);
723 } else {
724 tcg_gen_shr_tl(cpu_R[dc->rd], cpu_R[dc->ra], t0);
725 }
726 }
727 tcg_temp_free(t0);
728 }
729 }
730
731 static void dec_bit(DisasContext *dc)
732 {
733 CPUState *cs = CPU(dc->cpu);
734 TCGv t0;
735 unsigned int op;
736 int mem_index = cpu_mmu_index(&dc->cpu->env, false);
737
738 op = dc->ir & ((1 << 9) - 1);
739 switch (op) {
740 case 0x21:
741 /* src. */
742 t0 = tcg_temp_new();
743
744 LOG_DIS("src r%d r%d\n", dc->rd, dc->ra);
745 tcg_gen_andi_tl(t0, cpu_SR[SR_MSR], MSR_CC);
746 write_carry(dc, cpu_R[dc->ra]);
747 if (dc->rd) {
748 tcg_gen_shri_tl(cpu_R[dc->rd], cpu_R[dc->ra], 1);
749 tcg_gen_or_tl(cpu_R[dc->rd], cpu_R[dc->rd], t0);
750 }
751 tcg_temp_free(t0);
752 break;
753
754 case 0x1:
755 case 0x41:
756 /* srl. */
757 LOG_DIS("srl r%d r%d\n", dc->rd, dc->ra);
758
759 /* Update carry. Note that write carry only looks at the LSB. */
760 write_carry(dc, cpu_R[dc->ra]);
761 if (dc->rd) {
762 if (op == 0x41)
763 tcg_gen_shri_tl(cpu_R[dc->rd], cpu_R[dc->ra], 1);
764 else
765 tcg_gen_sari_tl(cpu_R[dc->rd], cpu_R[dc->ra], 1);
766 }
767 break;
768 case 0x60:
769 LOG_DIS("ext8s r%d r%d\n", dc->rd, dc->ra);
770 tcg_gen_ext8s_i32(cpu_R[dc->rd], cpu_R[dc->ra]);
771 break;
772 case 0x61:
773 LOG_DIS("ext16s r%d r%d\n", dc->rd, dc->ra);
774 tcg_gen_ext16s_i32(cpu_R[dc->rd], cpu_R[dc->ra]);
775 break;
776 case 0x64:
777 case 0x66:
778 case 0x74:
779 case 0x76:
780 /* wdc. */
781 LOG_DIS("wdc r%d\n", dc->ra);
782 if ((dc->tb_flags & MSR_EE_FLAG)
783 && mem_index == MMU_USER_IDX) {
784 tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN);
785 t_gen_raise_exception(dc, EXCP_HW_EXCP);
786 return;
787 }
788 break;
789 case 0x68:
790 /* wic. */
791 LOG_DIS("wic r%d\n", dc->ra);
792 if ((dc->tb_flags & MSR_EE_FLAG)
793 && mem_index == MMU_USER_IDX) {
794 tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN);
795 t_gen_raise_exception(dc, EXCP_HW_EXCP);
796 return;
797 }
798 break;
799 case 0xe0:
800 if ((dc->tb_flags & MSR_EE_FLAG)
801 && (dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)
802 && !dc->cpu->cfg.use_pcmp_instr) {
803 tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP);
804 t_gen_raise_exception(dc, EXCP_HW_EXCP);
805 }
806 if (dc->cpu->cfg.use_pcmp_instr) {
807 tcg_gen_clzi_i32(cpu_R[dc->rd], cpu_R[dc->ra], 32);
808 }
809 break;
810 case 0x1e0:
811 /* swapb */
812 LOG_DIS("swapb r%d r%d\n", dc->rd, dc->ra);
813 tcg_gen_bswap32_i32(cpu_R[dc->rd], cpu_R[dc->ra]);
814 break;
815 case 0x1e2:
816 /*swaph */
817 LOG_DIS("swaph r%d r%d\n", dc->rd, dc->ra);
818 tcg_gen_rotri_i32(cpu_R[dc->rd], cpu_R[dc->ra], 16);
819 break;
820 default:
821 cpu_abort(cs, "unknown bit oc=%x op=%x rd=%d ra=%d rb=%d\n",
822 dc->pc, op, dc->rd, dc->ra, dc->rb);
823 break;
824 }
825 }
826
827 static inline void sync_jmpstate(DisasContext *dc)
828 {
829 if (dc->jmp == JMP_DIRECT || dc->jmp == JMP_DIRECT_CC) {
830 if (dc->jmp == JMP_DIRECT) {
831 tcg_gen_movi_tl(env_btaken, 1);
832 }
833 dc->jmp = JMP_INDIRECT;
834 tcg_gen_movi_tl(env_btarget, dc->jmp_pc);
835 }
836 }
837
838 static void dec_imm(DisasContext *dc)
839 {
840 LOG_DIS("imm %x\n", dc->imm << 16);
841 tcg_gen_movi_tl(env_imm, (dc->imm << 16));
842 dc->tb_flags |= IMM_FLAG;
843 dc->clear_imm = 0;
844 }
845
846 static inline TCGv *compute_ldst_addr(DisasContext *dc, TCGv *t)
847 {
848 unsigned int extimm = dc->tb_flags & IMM_FLAG;
849 /* Should be set to one if r1 is used by loadstores. */
850 int stackprot = 0;
851
852 /* All load/stores use ra. */
853 if (dc->ra == 1 && dc->cpu->cfg.stackprot) {
854 stackprot = 1;
855 }
856
857 /* Treat the common cases first. */
858 if (!dc->type_b) {
859 /* If any of the regs is r0, return a ptr to the other. */
860 if (dc->ra == 0) {
861 return &cpu_R[dc->rb];
862 } else if (dc->rb == 0) {
863 return &cpu_R[dc->ra];
864 }
865
866 if (dc->rb == 1 && dc->cpu->cfg.stackprot) {
867 stackprot = 1;
868 }
869
870 *t = tcg_temp_new();
871 tcg_gen_add_tl(*t, cpu_R[dc->ra], cpu_R[dc->rb]);
872
873 if (stackprot) {
874 gen_helper_stackprot(cpu_env, *t);
875 }
876 return t;
877 }
878 /* Immediate. */
879 if (!extimm) {
880 if (dc->imm == 0) {
881 return &cpu_R[dc->ra];
882 }
883 *t = tcg_temp_new();
884 tcg_gen_movi_tl(*t, (int32_t)((int16_t)dc->imm));
885 tcg_gen_add_tl(*t, cpu_R[dc->ra], *t);
886 } else {
887 *t = tcg_temp_new();
888 tcg_gen_add_tl(*t, cpu_R[dc->ra], *(dec_alu_op_b(dc)));
889 }
890
891 if (stackprot) {
892 gen_helper_stackprot(cpu_env, *t);
893 }
894 return t;
895 }
896
897 static void dec_load(DisasContext *dc)
898 {
899 TCGv t, v, *addr;
900 unsigned int size, rev = 0, ex = 0;
901 TCGMemOp mop;
902
903 mop = dc->opcode & 3;
904 size = 1 << mop;
905 if (!dc->type_b) {
906 rev = (dc->ir >> 9) & 1;
907 ex = (dc->ir >> 10) & 1;
908 }
909 mop |= MO_TE;
910 if (rev) {
911 mop ^= MO_BSWAP;
912 }
913
914 if (size > 4 && (dc->tb_flags & MSR_EE_FLAG)
915 && (dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)) {
916 tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP);
917 t_gen_raise_exception(dc, EXCP_HW_EXCP);
918 return;
919 }
920
921 LOG_DIS("l%d%s%s%s\n", size, dc->type_b ? "i" : "", rev ? "r" : "",
922 ex ? "x" : "");
923
924 t_sync_flags(dc);
925 addr = compute_ldst_addr(dc, &t);
926
927 /*
928 * When doing reverse accesses we need to do two things.
929 *
930 * 1. Reverse the address wrt endianness.
931 * 2. Byteswap the data lanes on the way back into the CPU core.
932 */
933 if (rev && size != 4) {
934 /* Endian reverse the address. t is addr. */
935 switch (size) {
936 case 1:
937 {
938 /* 00 -> 11
939 01 -> 10
940 10 -> 10
941 11 -> 00 */
942 TCGv low = tcg_temp_new();
943
944 /* Force addr into the temp. */
945 if (addr != &t) {
946 t = tcg_temp_new();
947 tcg_gen_mov_tl(t, *addr);
948 addr = &t;
949 }
950
951 tcg_gen_andi_tl(low, t, 3);
952 tcg_gen_sub_tl(low, tcg_const_tl(3), low);
953 tcg_gen_andi_tl(t, t, ~3);
954 tcg_gen_or_tl(t, t, low);
955 tcg_gen_mov_tl(env_imm, t);
956 tcg_temp_free(low);
957 break;
958 }
959
960 case 2:
961 /* 00 -> 10
962 10 -> 00. */
963 /* Force addr into the temp. */
964 if (addr != &t) {
965 t = tcg_temp_new();
966 tcg_gen_xori_tl(t, *addr, 2);
967 addr = &t;
968 } else {
969 tcg_gen_xori_tl(t, t, 2);
970 }
971 break;
972 default:
973 cpu_abort(CPU(dc->cpu), "Invalid reverse size\n");
974 break;
975 }
976 }
977
978 /* lwx does not throw unaligned access errors, so force alignment */
979 if (ex) {
980 /* Force addr into the temp. */
981 if (addr != &t) {
982 t = tcg_temp_new();
983 tcg_gen_mov_tl(t, *addr);
984 addr = &t;
985 }
986 tcg_gen_andi_tl(t, t, ~3);
987 }
988
989 /* If we get a fault on a dslot, the jmpstate better be in sync. */
990 sync_jmpstate(dc);
991
992 /* Verify alignment if needed. */
993 /*
994 * Microblaze gives MMU faults priority over faults due to
995 * unaligned addresses. That's why we speculatively do the load
996 * into v. If the load succeeds, we verify alignment of the
997 * address and if that succeeds we write into the destination reg.
998 */
999 v = tcg_temp_new();
1000 tcg_gen_qemu_ld_tl(v, *addr, cpu_mmu_index(&dc->cpu->env, false), mop);
1001
1002 if ((dc->cpu->env.pvr.regs[2] & PVR2_UNALIGNED_EXC_MASK) && size > 1) {
1003 tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc);
1004 gen_helper_memalign(cpu_env, *addr, tcg_const_tl(dc->rd),
1005 tcg_const_tl(0), tcg_const_tl(size - 1));
1006 }
1007
1008 if (ex) {
1009 tcg_gen_mov_tl(env_res_addr, *addr);
1010 tcg_gen_mov_tl(env_res_val, v);
1011 }
1012 if (dc->rd) {
1013 tcg_gen_mov_tl(cpu_R[dc->rd], v);
1014 }
1015 tcg_temp_free(v);
1016
1017 if (ex) { /* lwx */
1018 /* no support for AXI exclusive so always clear C */
1019 write_carryi(dc, 0);
1020 }
1021
1022 if (addr == &t)
1023 tcg_temp_free(t);
1024 }
1025
1026 static void dec_store(DisasContext *dc)
1027 {
1028 TCGv t, *addr, swx_addr;
1029 TCGLabel *swx_skip = NULL;
1030 unsigned int size, rev = 0, ex = 0;
1031 TCGMemOp mop;
1032
1033 mop = dc->opcode & 3;
1034 size = 1 << mop;
1035 if (!dc->type_b) {
1036 rev = (dc->ir >> 9) & 1;
1037 ex = (dc->ir >> 10) & 1;
1038 }
1039 mop |= MO_TE;
1040 if (rev) {
1041 mop ^= MO_BSWAP;
1042 }
1043
1044 if (size > 4 && (dc->tb_flags & MSR_EE_FLAG)
1045 && (dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)) {
1046 tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP);
1047 t_gen_raise_exception(dc, EXCP_HW_EXCP);
1048 return;
1049 }
1050
1051 LOG_DIS("s%d%s%s%s\n", size, dc->type_b ? "i" : "", rev ? "r" : "",
1052 ex ? "x" : "");
1053 t_sync_flags(dc);
1054 /* If we get a fault on a dslot, the jmpstate better be in sync. */
1055 sync_jmpstate(dc);
1056 addr = compute_ldst_addr(dc, &t);
1057
1058 swx_addr = tcg_temp_local_new();
1059 if (ex) { /* swx */
1060 TCGv tval;
1061
1062 /* Force addr into the swx_addr. */
1063 tcg_gen_mov_tl(swx_addr, *addr);
1064 addr = &swx_addr;
1065 /* swx does not throw unaligned access errors, so force alignment */
1066 tcg_gen_andi_tl(swx_addr, swx_addr, ~3);
1067
1068 write_carryi(dc, 1);
1069 swx_skip = gen_new_label();
1070 tcg_gen_brcond_tl(TCG_COND_NE, env_res_addr, swx_addr, swx_skip);
1071
1072 /* Compare the value loaded at lwx with current contents of
1073 the reserved location.
1074 FIXME: This only works for system emulation where we can expect
1075 this compare and the following write to be atomic. For user
1076 emulation we need to add atomicity between threads. */
1077 tval = tcg_temp_new();
1078 tcg_gen_qemu_ld_tl(tval, swx_addr, cpu_mmu_index(&dc->cpu->env, false),
1079 MO_TEUL);
1080 tcg_gen_brcond_tl(TCG_COND_NE, env_res_val, tval, swx_skip);
1081 write_carryi(dc, 0);
1082 tcg_temp_free(tval);
1083 }
1084
1085 if (rev && size != 4) {
1086 /* Endian reverse the address. t is addr. */
1087 switch (size) {
1088 case 1:
1089 {
1090 /* 00 -> 11
1091 01 -> 10
1092 10 -> 10
1093 11 -> 00 */
1094 TCGv low = tcg_temp_new();
1095
1096 /* Force addr into the temp. */
1097 if (addr != &t) {
1098 t = tcg_temp_new();
1099 tcg_gen_mov_tl(t, *addr);
1100 addr = &t;
1101 }
1102
1103 tcg_gen_andi_tl(low, t, 3);
1104 tcg_gen_sub_tl(low, tcg_const_tl(3), low);
1105 tcg_gen_andi_tl(t, t, ~3);
1106 tcg_gen_or_tl(t, t, low);
1107 tcg_gen_mov_tl(env_imm, t);
1108 tcg_temp_free(low);
1109 break;
1110 }
1111
1112 case 2:
1113 /* 00 -> 10
1114 10 -> 00. */
1115 /* Force addr into the temp. */
1116 if (addr != &t) {
1117 t = tcg_temp_new();
1118 tcg_gen_xori_tl(t, *addr, 2);
1119 addr = &t;
1120 } else {
1121 tcg_gen_xori_tl(t, t, 2);
1122 }
1123 break;
1124 default:
1125 cpu_abort(CPU(dc->cpu), "Invalid reverse size\n");
1126 break;
1127 }
1128 }
1129 tcg_gen_qemu_st_tl(cpu_R[dc->rd], *addr, cpu_mmu_index(&dc->cpu->env, false), mop);
1130
1131 /* Verify alignment if needed. */
1132 if ((dc->cpu->env.pvr.regs[2] & PVR2_UNALIGNED_EXC_MASK) && size > 1) {
1133 tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc);
1134 /* FIXME: if the alignment is wrong, we should restore the value
1135 * in memory. One possible way to achieve this is to probe
1136 * the MMU prior to the memaccess, thay way we could put
1137 * the alignment checks in between the probe and the mem
1138 * access.
1139 */
1140 gen_helper_memalign(cpu_env, *addr, tcg_const_tl(dc->rd),
1141 tcg_const_tl(1), tcg_const_tl(size - 1));
1142 }
1143
1144 if (ex) {
1145 gen_set_label(swx_skip);
1146 }
1147 tcg_temp_free(swx_addr);
1148
1149 if (addr == &t)
1150 tcg_temp_free(t);
1151 }
1152
1153 static inline void eval_cc(DisasContext *dc, unsigned int cc,
1154 TCGv d, TCGv a, TCGv b)
1155 {
1156 switch (cc) {
1157 case CC_EQ:
1158 tcg_gen_setcond_tl(TCG_COND_EQ, d, a, b);
1159 break;
1160 case CC_NE:
1161 tcg_gen_setcond_tl(TCG_COND_NE, d, a, b);
1162 break;
1163 case CC_LT:
1164 tcg_gen_setcond_tl(TCG_COND_LT, d, a, b);
1165 break;
1166 case CC_LE:
1167 tcg_gen_setcond_tl(TCG_COND_LE, d, a, b);
1168 break;
1169 case CC_GE:
1170 tcg_gen_setcond_tl(TCG_COND_GE, d, a, b);
1171 break;
1172 case CC_GT:
1173 tcg_gen_setcond_tl(TCG_COND_GT, d, a, b);
1174 break;
1175 default:
1176 cpu_abort(CPU(dc->cpu), "Unknown condition code %x.\n", cc);
1177 break;
1178 }
1179 }
1180
1181 static void eval_cond_jmp(DisasContext *dc, TCGv pc_true, TCGv pc_false)
1182 {
1183 TCGLabel *l1 = gen_new_label();
1184 /* Conditional jmp. */
1185 tcg_gen_mov_tl(cpu_SR[SR_PC], pc_false);
1186 tcg_gen_brcondi_tl(TCG_COND_EQ, env_btaken, 0, l1);
1187 tcg_gen_mov_tl(cpu_SR[SR_PC], pc_true);
1188 gen_set_label(l1);
1189 }
1190
1191 static void dec_bcc(DisasContext *dc)
1192 {
1193 unsigned int cc;
1194 unsigned int dslot;
1195
1196 cc = EXTRACT_FIELD(dc->ir, 21, 23);
1197 dslot = dc->ir & (1 << 25);
1198 LOG_DIS("bcc%s r%d %x\n", dslot ? "d" : "", dc->ra, dc->imm);
1199
1200 dc->delayed_branch = 1;
1201 if (dslot) {
1202 dc->delayed_branch = 2;
1203 dc->tb_flags |= D_FLAG;
1204 tcg_gen_st_tl(tcg_const_tl(dc->type_b && (dc->tb_flags & IMM_FLAG)),
1205 cpu_env, offsetof(CPUMBState, bimm));
1206 }
1207
1208 if (dec_alu_op_b_is_small_imm(dc)) {
1209 int32_t offset = (int32_t)((int16_t)dc->imm); /* sign-extend. */
1210
1211 tcg_gen_movi_tl(env_btarget, dc->pc + offset);
1212 dc->jmp = JMP_DIRECT_CC;
1213 dc->jmp_pc = dc->pc + offset;
1214 } else {
1215 dc->jmp = JMP_INDIRECT;
1216 tcg_gen_movi_tl(env_btarget, dc->pc);
1217 tcg_gen_add_tl(env_btarget, env_btarget, *(dec_alu_op_b(dc)));
1218 }
1219 eval_cc(dc, cc, env_btaken, cpu_R[dc->ra], tcg_const_tl(0));
1220 }
1221
1222 static void dec_br(DisasContext *dc)
1223 {
1224 unsigned int dslot, link, abs, mbar;
1225 int mem_index = cpu_mmu_index(&dc->cpu->env, false);
1226
1227 dslot = dc->ir & (1 << 20);
1228 abs = dc->ir & (1 << 19);
1229 link = dc->ir & (1 << 18);
1230
1231 /* Memory barrier. */
1232 mbar = (dc->ir >> 16) & 31;
1233 if (mbar == 2 && dc->imm == 4) {
1234 /* mbar IMM & 16 decodes to sleep. */
1235 if (dc->rd & 16) {
1236 TCGv_i32 tmp_hlt = tcg_const_i32(EXCP_HLT);
1237 TCGv_i32 tmp_1 = tcg_const_i32(1);
1238
1239 LOG_DIS("sleep\n");
1240
1241 t_sync_flags(dc);
1242 tcg_gen_st_i32(tmp_1, cpu_env,
1243 -offsetof(MicroBlazeCPU, env)
1244 +offsetof(CPUState, halted));
1245 tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc + 4);
1246 gen_helper_raise_exception(cpu_env, tmp_hlt);
1247 tcg_temp_free_i32(tmp_hlt);
1248 tcg_temp_free_i32(tmp_1);
1249 return;
1250 }
1251 LOG_DIS("mbar %d\n", dc->rd);
1252 /* Break the TB. */
1253 dc->cpustate_changed = 1;
1254 return;
1255 }
1256
1257 LOG_DIS("br%s%s%s%s imm=%x\n",
1258 abs ? "a" : "", link ? "l" : "",
1259 dc->type_b ? "i" : "", dslot ? "d" : "",
1260 dc->imm);
1261
1262 dc->delayed_branch = 1;
1263 if (dslot) {
1264 dc->delayed_branch = 2;
1265 dc->tb_flags |= D_FLAG;
1266 tcg_gen_st_tl(tcg_const_tl(dc->type_b && (dc->tb_flags & IMM_FLAG)),
1267 cpu_env, offsetof(CPUMBState, bimm));
1268 }
1269 if (link && dc->rd)
1270 tcg_gen_movi_tl(cpu_R[dc->rd], dc->pc);
1271
1272 dc->jmp = JMP_INDIRECT;
1273 if (abs) {
1274 tcg_gen_movi_tl(env_btaken, 1);
1275 tcg_gen_mov_tl(env_btarget, *(dec_alu_op_b(dc)));
1276 if (link && !dslot) {
1277 if (!(dc->tb_flags & IMM_FLAG) && (dc->imm == 8 || dc->imm == 0x18))
1278 t_gen_raise_exception(dc, EXCP_BREAK);
1279 if (dc->imm == 0) {
1280 if ((dc->tb_flags & MSR_EE_FLAG) && mem_index == MMU_USER_IDX) {
1281 tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN);
1282 t_gen_raise_exception(dc, EXCP_HW_EXCP);
1283 return;
1284 }
1285
1286 t_gen_raise_exception(dc, EXCP_DEBUG);
1287 }
1288 }
1289 } else {
1290 if (dec_alu_op_b_is_small_imm(dc)) {
1291 dc->jmp = JMP_DIRECT;
1292 dc->jmp_pc = dc->pc + (int32_t)((int16_t)dc->imm);
1293 } else {
1294 tcg_gen_movi_tl(env_btaken, 1);
1295 tcg_gen_movi_tl(env_btarget, dc->pc);
1296 tcg_gen_add_tl(env_btarget, env_btarget, *(dec_alu_op_b(dc)));
1297 }
1298 }
1299 }
1300
1301 static inline void do_rti(DisasContext *dc)
1302 {
1303 TCGv t0, t1;
1304 t0 = tcg_temp_new();
1305 t1 = tcg_temp_new();
1306 tcg_gen_shri_tl(t0, cpu_SR[SR_MSR], 1);
1307 tcg_gen_ori_tl(t1, cpu_SR[SR_MSR], MSR_IE);
1308 tcg_gen_andi_tl(t0, t0, (MSR_VM | MSR_UM));
1309
1310 tcg_gen_andi_tl(t1, t1, ~(MSR_VM | MSR_UM));
1311 tcg_gen_or_tl(t1, t1, t0);
1312 msr_write(dc, t1);
1313 tcg_temp_free(t1);
1314 tcg_temp_free(t0);
1315 dc->tb_flags &= ~DRTI_FLAG;
1316 }
1317
1318 static inline void do_rtb(DisasContext *dc)
1319 {
1320 TCGv t0, t1;
1321 t0 = tcg_temp_new();
1322 t1 = tcg_temp_new();
1323 tcg_gen_andi_tl(t1, cpu_SR[SR_MSR], ~MSR_BIP);
1324 tcg_gen_shri_tl(t0, t1, 1);
1325 tcg_gen_andi_tl(t0, t0, (MSR_VM | MSR_UM));
1326
1327 tcg_gen_andi_tl(t1, t1, ~(MSR_VM | MSR_UM));
1328 tcg_gen_or_tl(t1, t1, t0);
1329 msr_write(dc, t1);
1330 tcg_temp_free(t1);
1331 tcg_temp_free(t0);
1332 dc->tb_flags &= ~DRTB_FLAG;
1333 }
1334
1335 static inline void do_rte(DisasContext *dc)
1336 {
1337 TCGv t0, t1;
1338 t0 = tcg_temp_new();
1339 t1 = tcg_temp_new();
1340
1341 tcg_gen_ori_tl(t1, cpu_SR[SR_MSR], MSR_EE);
1342 tcg_gen_andi_tl(t1, t1, ~MSR_EIP);
1343 tcg_gen_shri_tl(t0, t1, 1);
1344 tcg_gen_andi_tl(t0, t0, (MSR_VM | MSR_UM));
1345
1346 tcg_gen_andi_tl(t1, t1, ~(MSR_VM | MSR_UM));
1347 tcg_gen_or_tl(t1, t1, t0);
1348 msr_write(dc, t1);
1349 tcg_temp_free(t1);
1350 tcg_temp_free(t0);
1351 dc->tb_flags &= ~DRTE_FLAG;
1352 }
1353
1354 static void dec_rts(DisasContext *dc)
1355 {
1356 unsigned int b_bit, i_bit, e_bit;
1357 int mem_index = cpu_mmu_index(&dc->cpu->env, false);
1358
1359 i_bit = dc->ir & (1 << 21);
1360 b_bit = dc->ir & (1 << 22);
1361 e_bit = dc->ir & (1 << 23);
1362
1363 dc->delayed_branch = 2;
1364 dc->tb_flags |= D_FLAG;
1365 tcg_gen_st_tl(tcg_const_tl(dc->type_b && (dc->tb_flags & IMM_FLAG)),
1366 cpu_env, offsetof(CPUMBState, bimm));
1367
1368 if (i_bit) {
1369 LOG_DIS("rtid ir=%x\n", dc->ir);
1370 if ((dc->tb_flags & MSR_EE_FLAG)
1371 && mem_index == MMU_USER_IDX) {
1372 tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN);
1373 t_gen_raise_exception(dc, EXCP_HW_EXCP);
1374 }
1375 dc->tb_flags |= DRTI_FLAG;
1376 } else if (b_bit) {
1377 LOG_DIS("rtbd ir=%x\n", dc->ir);
1378 if ((dc->tb_flags & MSR_EE_FLAG)
1379 && mem_index == MMU_USER_IDX) {
1380 tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN);
1381 t_gen_raise_exception(dc, EXCP_HW_EXCP);
1382 }
1383 dc->tb_flags |= DRTB_FLAG;
1384 } else if (e_bit) {
1385 LOG_DIS("rted ir=%x\n", dc->ir);
1386 if ((dc->tb_flags & MSR_EE_FLAG)
1387 && mem_index == MMU_USER_IDX) {
1388 tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN);
1389 t_gen_raise_exception(dc, EXCP_HW_EXCP);
1390 }
1391 dc->tb_flags |= DRTE_FLAG;
1392 } else
1393 LOG_DIS("rts ir=%x\n", dc->ir);
1394
1395 dc->jmp = JMP_INDIRECT;
1396 tcg_gen_movi_tl(env_btaken, 1);
1397 tcg_gen_add_tl(env_btarget, cpu_R[dc->ra], *(dec_alu_op_b(dc)));
1398 }
1399
1400 static int dec_check_fpuv2(DisasContext *dc)
1401 {
1402 if ((dc->cpu->cfg.use_fpu != 2) && (dc->tb_flags & MSR_EE_FLAG)) {
1403 tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_FPU);
1404 t_gen_raise_exception(dc, EXCP_HW_EXCP);
1405 }
1406 return (dc->cpu->cfg.use_fpu == 2) ? 0 : PVR2_USE_FPU2_MASK;
1407 }
1408
1409 static void dec_fpu(DisasContext *dc)
1410 {
1411 unsigned int fpu_insn;
1412
1413 if ((dc->tb_flags & MSR_EE_FLAG)
1414 && (dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)
1415 && (dc->cpu->cfg.use_fpu != 1)) {
1416 tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP);
1417 t_gen_raise_exception(dc, EXCP_HW_EXCP);
1418 return;
1419 }
1420
1421 fpu_insn = (dc->ir >> 7) & 7;
1422
1423 switch (fpu_insn) {
1424 case 0:
1425 gen_helper_fadd(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra],
1426 cpu_R[dc->rb]);
1427 break;
1428
1429 case 1:
1430 gen_helper_frsub(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra],
1431 cpu_R[dc->rb]);
1432 break;
1433
1434 case 2:
1435 gen_helper_fmul(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra],
1436 cpu_R[dc->rb]);
1437 break;
1438
1439 case 3:
1440 gen_helper_fdiv(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra],
1441 cpu_R[dc->rb]);
1442 break;
1443
1444 case 4:
1445 switch ((dc->ir >> 4) & 7) {
1446 case 0:
1447 gen_helper_fcmp_un(cpu_R[dc->rd], cpu_env,
1448 cpu_R[dc->ra], cpu_R[dc->rb]);
1449 break;
1450 case 1:
1451 gen_helper_fcmp_lt(cpu_R[dc->rd], cpu_env,
1452 cpu_R[dc->ra], cpu_R[dc->rb]);
1453 break;
1454 case 2:
1455 gen_helper_fcmp_eq(cpu_R[dc->rd], cpu_env,
1456 cpu_R[dc->ra], cpu_R[dc->rb]);
1457 break;
1458 case 3:
1459 gen_helper_fcmp_le(cpu_R[dc->rd], cpu_env,
1460 cpu_R[dc->ra], cpu_R[dc->rb]);
1461 break;
1462 case 4:
1463 gen_helper_fcmp_gt(cpu_R[dc->rd], cpu_env,
1464 cpu_R[dc->ra], cpu_R[dc->rb]);
1465 break;
1466 case 5:
1467 gen_helper_fcmp_ne(cpu_R[dc->rd], cpu_env,
1468 cpu_R[dc->ra], cpu_R[dc->rb]);
1469 break;
1470 case 6:
1471 gen_helper_fcmp_ge(cpu_R[dc->rd], cpu_env,
1472 cpu_R[dc->ra], cpu_R[dc->rb]);
1473 break;
1474 default:
1475 qemu_log_mask(LOG_UNIMP,
1476 "unimplemented fcmp fpu_insn=%x pc=%x"
1477 " opc=%x\n",
1478 fpu_insn, dc->pc, dc->opcode);
1479 dc->abort_at_next_insn = 1;
1480 break;
1481 }
1482 break;
1483
1484 case 5:
1485 if (!dec_check_fpuv2(dc)) {
1486 return;
1487 }
1488 gen_helper_flt(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra]);
1489 break;
1490
1491 case 6:
1492 if (!dec_check_fpuv2(dc)) {
1493 return;
1494 }
1495 gen_helper_fint(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra]);
1496 break;
1497
1498 case 7:
1499 if (!dec_check_fpuv2(dc)) {
1500 return;
1501 }
1502 gen_helper_fsqrt(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra]);
1503 break;
1504
1505 default:
1506 qemu_log_mask(LOG_UNIMP, "unimplemented FPU insn fpu_insn=%x pc=%x"
1507 " opc=%x\n",
1508 fpu_insn, dc->pc, dc->opcode);
1509 dc->abort_at_next_insn = 1;
1510 break;
1511 }
1512 }
1513
1514 static void dec_null(DisasContext *dc)
1515 {
1516 if ((dc->tb_flags & MSR_EE_FLAG)
1517 && (dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)) {
1518 tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP);
1519 t_gen_raise_exception(dc, EXCP_HW_EXCP);
1520 return;
1521 }
1522 qemu_log_mask(LOG_GUEST_ERROR, "unknown insn pc=%x opc=%x\n", dc->pc, dc->opcode);
1523 dc->abort_at_next_insn = 1;
1524 }
1525
1526 /* Insns connected to FSL or AXI stream attached devices. */
1527 static void dec_stream(DisasContext *dc)
1528 {
1529 int mem_index = cpu_mmu_index(&dc->cpu->env, false);
1530 TCGv_i32 t_id, t_ctrl;
1531 int ctrl;
1532
1533 LOG_DIS("%s%s imm=%x\n", dc->rd ? "get" : "put",
1534 dc->type_b ? "" : "d", dc->imm);
1535
1536 if ((dc->tb_flags & MSR_EE_FLAG) && (mem_index == MMU_USER_IDX)) {
1537 tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN);
1538 t_gen_raise_exception(dc, EXCP_HW_EXCP);
1539 return;
1540 }
1541
1542 t_id = tcg_temp_new();
1543 if (dc->type_b) {
1544 tcg_gen_movi_tl(t_id, dc->imm & 0xf);
1545 ctrl = dc->imm >> 10;
1546 } else {
1547 tcg_gen_andi_tl(t_id, cpu_R[dc->rb], 0xf);
1548 ctrl = dc->imm >> 5;
1549 }
1550
1551 t_ctrl = tcg_const_tl(ctrl);
1552
1553 if (dc->rd == 0) {
1554 gen_helper_put(t_id, t_ctrl, cpu_R[dc->ra]);
1555 } else {
1556 gen_helper_get(cpu_R[dc->rd], t_id, t_ctrl);
1557 }
1558 tcg_temp_free(t_id);
1559 tcg_temp_free(t_ctrl);
1560 }
1561
1562 static struct decoder_info {
1563 struct {
1564 uint32_t bits;
1565 uint32_t mask;
1566 };
1567 void (*dec)(DisasContext *dc);
1568 } decinfo[] = {
1569 {DEC_ADD, dec_add},
1570 {DEC_SUB, dec_sub},
1571 {DEC_AND, dec_and},
1572 {DEC_XOR, dec_xor},
1573 {DEC_OR, dec_or},
1574 {DEC_BIT, dec_bit},
1575 {DEC_BARREL, dec_barrel},
1576 {DEC_LD, dec_load},
1577 {DEC_ST, dec_store},
1578 {DEC_IMM, dec_imm},
1579 {DEC_BR, dec_br},
1580 {DEC_BCC, dec_bcc},
1581 {DEC_RTS, dec_rts},
1582 {DEC_FPU, dec_fpu},
1583 {DEC_MUL, dec_mul},
1584 {DEC_DIV, dec_div},
1585 {DEC_MSR, dec_msr},
1586 {DEC_STREAM, dec_stream},
1587 {{0, 0}, dec_null}
1588 };
1589
1590 static inline void decode(DisasContext *dc, uint32_t ir)
1591 {
1592 int i;
1593
1594 dc->ir = ir;
1595 LOG_DIS("%8.8x\t", dc->ir);
1596
1597 if (dc->ir)
1598 dc->nr_nops = 0;
1599 else {
1600 if ((dc->tb_flags & MSR_EE_FLAG)
1601 && (dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)
1602 && (dc->cpu->env.pvr.regs[2] & PVR2_OPCODE_0x0_ILL_MASK)) {
1603 tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP);
1604 t_gen_raise_exception(dc, EXCP_HW_EXCP);
1605 return;
1606 }
1607
1608 LOG_DIS("nr_nops=%d\t", dc->nr_nops);
1609 dc->nr_nops++;
1610 if (dc->nr_nops > 4) {
1611 cpu_abort(CPU(dc->cpu), "fetching nop sequence\n");
1612 }
1613 }
1614 /* bit 2 seems to indicate insn type. */
1615 dc->type_b = ir & (1 << 29);
1616
1617 dc->opcode = EXTRACT_FIELD(ir, 26, 31);
1618 dc->rd = EXTRACT_FIELD(ir, 21, 25);
1619 dc->ra = EXTRACT_FIELD(ir, 16, 20);
1620 dc->rb = EXTRACT_FIELD(ir, 11, 15);
1621 dc->imm = EXTRACT_FIELD(ir, 0, 15);
1622
1623 /* Large switch for all insns. */
1624 for (i = 0; i < ARRAY_SIZE(decinfo); i++) {
1625 if ((dc->opcode & decinfo[i].mask) == decinfo[i].bits) {
1626 decinfo[i].dec(dc);
1627 break;
1628 }
1629 }
1630 }
1631
1632 /* generate intermediate code for basic block 'tb'. */
1633 void gen_intermediate_code(CPUState *cs, struct TranslationBlock *tb)
1634 {
1635 CPUMBState *env = cs->env_ptr;
1636 MicroBlazeCPU *cpu = mb_env_get_cpu(env);
1637 uint32_t pc_start;
1638 struct DisasContext ctx;
1639 struct DisasContext *dc = &ctx;
1640 uint32_t next_page_start, org_flags;
1641 target_ulong npc;
1642 int num_insns;
1643 int max_insns;
1644
1645 pc_start = tb->pc;
1646 dc->cpu = cpu;
1647 dc->tb = tb;
1648 org_flags = dc->synced_flags = dc->tb_flags = tb->flags;
1649
1650 dc->is_jmp = DISAS_NEXT;
1651 dc->jmp = 0;
1652 dc->delayed_branch = !!(dc->tb_flags & D_FLAG);
1653 if (dc->delayed_branch) {
1654 dc->jmp = JMP_INDIRECT;
1655 }
1656 dc->pc = pc_start;
1657 dc->singlestep_enabled = cs->singlestep_enabled;
1658 dc->cpustate_changed = 0;
1659 dc->abort_at_next_insn = 0;
1660 dc->nr_nops = 0;
1661
1662 if (pc_start & 3) {
1663 cpu_abort(cs, "Microblaze: unaligned PC=%x\n", pc_start);
1664 }
1665
1666 next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
1667 num_insns = 0;
1668 max_insns = tb_cflags(tb) & CF_COUNT_MASK;
1669 if (max_insns == 0) {
1670 max_insns = CF_COUNT_MASK;
1671 }
1672 if (max_insns > TCG_MAX_INSNS) {
1673 max_insns = TCG_MAX_INSNS;
1674 }
1675
1676 gen_tb_start(tb);
1677 do
1678 {
1679 tcg_gen_insn_start(dc->pc);
1680 num_insns++;
1681
1682 #if SIM_COMPAT
1683 if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
1684 tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc);
1685 gen_helper_debug();
1686 }
1687 #endif
1688
1689 if (unlikely(cpu_breakpoint_test(cs, dc->pc, BP_ANY))) {
1690 t_gen_raise_exception(dc, EXCP_DEBUG);
1691 dc->is_jmp = DISAS_UPDATE;
1692 /* The address covered by the breakpoint must be included in
1693 [tb->pc, tb->pc + tb->size) in order to for it to be
1694 properly cleared -- thus we increment the PC here so that
1695 the logic setting tb->size below does the right thing. */
1696 dc->pc += 4;
1697 break;
1698 }
1699
1700 /* Pretty disas. */
1701 LOG_DIS("%8.8x:\t", dc->pc);
1702
1703 if (num_insns == max_insns && (tb_cflags(tb) & CF_LAST_IO)) {
1704 gen_io_start();
1705 }
1706
1707 dc->clear_imm = 1;
1708 decode(dc, cpu_ldl_code(env, dc->pc));
1709 if (dc->clear_imm)
1710 dc->tb_flags &= ~IMM_FLAG;
1711 dc->pc += 4;
1712
1713 if (dc->delayed_branch) {
1714 dc->delayed_branch--;
1715 if (!dc->delayed_branch) {
1716 if (dc->tb_flags & DRTI_FLAG)
1717 do_rti(dc);
1718 if (dc->tb_flags & DRTB_FLAG)
1719 do_rtb(dc);
1720 if (dc->tb_flags & DRTE_FLAG)
1721 do_rte(dc);
1722 /* Clear the delay slot flag. */
1723 dc->tb_flags &= ~D_FLAG;
1724 /* If it is a direct jump, try direct chaining. */
1725 if (dc->jmp == JMP_INDIRECT) {
1726 eval_cond_jmp(dc, env_btarget, tcg_const_tl(dc->pc));
1727 dc->is_jmp = DISAS_JUMP;
1728 } else if (dc->jmp == JMP_DIRECT) {
1729 t_sync_flags(dc);
1730 gen_goto_tb(dc, 0, dc->jmp_pc);
1731 dc->is_jmp = DISAS_TB_JUMP;
1732 } else if (dc->jmp == JMP_DIRECT_CC) {
1733 TCGLabel *l1 = gen_new_label();
1734 t_sync_flags(dc);
1735 /* Conditional jmp. */
1736 tcg_gen_brcondi_tl(TCG_COND_NE, env_btaken, 0, l1);
1737 gen_goto_tb(dc, 1, dc->pc);
1738 gen_set_label(l1);
1739 gen_goto_tb(dc, 0, dc->jmp_pc);
1740
1741 dc->is_jmp = DISAS_TB_JUMP;
1742 }
1743 break;
1744 }
1745 }
1746 if (cs->singlestep_enabled) {
1747 break;
1748 }
1749 } while (!dc->is_jmp && !dc->cpustate_changed
1750 && !tcg_op_buf_full()
1751 && !singlestep
1752 && (dc->pc < next_page_start)
1753 && num_insns < max_insns);
1754
1755 npc = dc->pc;
1756 if (dc->jmp == JMP_DIRECT || dc->jmp == JMP_DIRECT_CC) {
1757 if (dc->tb_flags & D_FLAG) {
1758 dc->is_jmp = DISAS_UPDATE;
1759 tcg_gen_movi_tl(cpu_SR[SR_PC], npc);
1760 sync_jmpstate(dc);
1761 } else
1762 npc = dc->jmp_pc;
1763 }
1764
1765 if (tb_cflags(tb) & CF_LAST_IO)
1766 gen_io_end();
1767 /* Force an update if the per-tb cpu state has changed. */
1768 if (dc->is_jmp == DISAS_NEXT
1769 && (dc->cpustate_changed || org_flags != dc->tb_flags)) {
1770 dc->is_jmp = DISAS_UPDATE;
1771 tcg_gen_movi_tl(cpu_SR[SR_PC], npc);
1772 }
1773 t_sync_flags(dc);
1774
1775 if (unlikely(cs->singlestep_enabled)) {
1776 TCGv_i32 tmp = tcg_const_i32(EXCP_DEBUG);
1777
1778 if (dc->is_jmp != DISAS_JUMP) {
1779 tcg_gen_movi_tl(cpu_SR[SR_PC], npc);
1780 }
1781 gen_helper_raise_exception(cpu_env, tmp);
1782 tcg_temp_free_i32(tmp);
1783 } else {
1784 switch(dc->is_jmp) {
1785 case DISAS_NEXT:
1786 gen_goto_tb(dc, 1, npc);
1787 break;
1788 default:
1789 case DISAS_JUMP:
1790 case DISAS_UPDATE:
1791 /* indicate that the hash table must be used
1792 to find the next TB */
1793 tcg_gen_exit_tb(0);
1794 break;
1795 case DISAS_TB_JUMP:
1796 /* nothing more to generate */
1797 break;
1798 }
1799 }
1800 gen_tb_end(tb, num_insns);
1801
1802 tb->size = dc->pc - pc_start;
1803 tb->icount = num_insns;
1804
1805 #ifdef DEBUG_DISAS
1806 #if !SIM_COMPAT
1807 if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
1808 && qemu_log_in_addr_range(pc_start)) {
1809 qemu_log_lock();
1810 qemu_log("--------------\n");
1811 log_target_disas(cs, pc_start, dc->pc - pc_start);
1812 qemu_log_unlock();
1813 }
1814 #endif
1815 #endif
1816 assert(!dc->abort_at_next_insn);
1817 }
1818
1819 void mb_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf,
1820 int flags)
1821 {
1822 MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs);
1823 CPUMBState *env = &cpu->env;
1824 int i;
1825
1826 if (!env || !f)
1827 return;
1828
1829 cpu_fprintf(f, "IN: PC=%x %s\n",
1830 env->sregs[SR_PC], lookup_symbol(env->sregs[SR_PC]));
1831 cpu_fprintf(f, "rmsr=%x resr=%x rear=%x debug=%x imm=%x iflags=%x fsr=%x\n",
1832 env->sregs[SR_MSR], env->sregs[SR_ESR], env->sregs[SR_EAR],
1833 env->debug, env->imm, env->iflags, env->sregs[SR_FSR]);
1834 cpu_fprintf(f, "btaken=%d btarget=%x mode=%s(saved=%s) eip=%d ie=%d\n",
1835 env->btaken, env->btarget,
1836 (env->sregs[SR_MSR] & MSR_UM) ? "user" : "kernel",
1837 (env->sregs[SR_MSR] & MSR_UMS) ? "user" : "kernel",
1838 (env->sregs[SR_MSR] & MSR_EIP),
1839 (env->sregs[SR_MSR] & MSR_IE));
1840
1841 for (i = 0; i < 32; i++) {
1842 cpu_fprintf(f, "r%2.2d=%8.8x ", i, env->regs[i]);
1843 if ((i + 1) % 4 == 0)
1844 cpu_fprintf(f, "\n");
1845 }
1846 cpu_fprintf(f, "\n\n");
1847 }
1848
1849 void mb_tcg_init(void)
1850 {
1851 int i;
1852
1853 env_debug = tcg_global_mem_new(cpu_env,
1854 offsetof(CPUMBState, debug),
1855 "debug0");
1856 env_iflags = tcg_global_mem_new(cpu_env,
1857 offsetof(CPUMBState, iflags),
1858 "iflags");
1859 env_imm = tcg_global_mem_new(cpu_env,
1860 offsetof(CPUMBState, imm),
1861 "imm");
1862 env_btarget = tcg_global_mem_new(cpu_env,
1863 offsetof(CPUMBState, btarget),
1864 "btarget");
1865 env_btaken = tcg_global_mem_new(cpu_env,
1866 offsetof(CPUMBState, btaken),
1867 "btaken");
1868 env_res_addr = tcg_global_mem_new(cpu_env,
1869 offsetof(CPUMBState, res_addr),
1870 "res_addr");
1871 env_res_val = tcg_global_mem_new(cpu_env,
1872 offsetof(CPUMBState, res_val),
1873 "res_val");
1874 for (i = 0; i < ARRAY_SIZE(cpu_R); i++) {
1875 cpu_R[i] = tcg_global_mem_new(cpu_env,
1876 offsetof(CPUMBState, regs[i]),
1877 regnames[i]);
1878 }
1879 for (i = 0; i < ARRAY_SIZE(cpu_SR); i++) {
1880 cpu_SR[i] = tcg_global_mem_new(cpu_env,
1881 offsetof(CPUMBState, sregs[i]),
1882 special_regnames[i]);
1883 }
1884 }
1885
1886 void restore_state_to_opc(CPUMBState *env, TranslationBlock *tb,
1887 target_ulong *data)
1888 {
1889 env->sregs[SR_PC] = data[0];
1890 }
AR7 emulation for QEMU