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microblaze: Add infrastructure for supporting hw exceptions.
[thirdparty/qemu.git] / target-microblaze / translate.c
CommitLineData
4acb54ba
EI		 1/*
2 * Xilinx MicroBlaze emulation for qemu: main translation routines.
3 *
4 * Copyright (c) 2009 Edgar E. Iglesias.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
8167ee88 17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
4acb54ba
EI		 18 */
19
20#include <stdarg.h>
21#include <stdlib.h>
22#include <stdio.h>
23#include <string.h>
24#include <inttypes.h>
25#include <assert.h>
26
27#include "cpu.h"
28#include "exec-all.h"
29#include "disas.h"
30#include "tcg-op.h"
31#include "helper.h"
32#include "microblaze-decode.h"
33#include "qemu-common.h"
34
35#define GEN_HELPER 1
36#include "helper.h"
37
38#define SIM_COMPAT 0
39#define DISAS_GNU 1
40#define DISAS_MB 1
41#if DISAS_MB && !SIM_COMPAT
42# define LOG_DIS(...) qemu_log_mask(CPU_LOG_TB_IN_ASM, ## __VA_ARGS__)
43#else
44# define LOG_DIS(...) do { } while (0)
45#endif
46
47#define D(x)
48
49#define EXTRACT_FIELD(src, start, end) \
50 (((src) >> start) & ((1 << (end - start + 1)) - 1))
51
52static TCGv env_debug;
53static TCGv_ptr cpu_env;
54static TCGv cpu_R[32];
55static TCGv cpu_SR[18];
56static TCGv env_imm;
57static TCGv env_btaken;
58static TCGv env_btarget;
59static TCGv env_iflags;
60
61#include "gen-icount.h"
62
63/* This is the state at translation time. */
64typedef struct DisasContext {
65 CPUState *env;
66 target_ulong pc, ppc;
67 target_ulong cache_pc;
68
69 /* Decoder. */
70 int type_b;
71 uint32_t ir;
72 uint8_t opcode;
73 uint8_t rd, ra, rb;
74 uint16_t imm;
75
76 unsigned int cpustate_changed;
77 unsigned int delayed_branch;
78 unsigned int tb_flags, synced_flags; /* tb dependent flags. */
79 unsigned int clear_imm;
80 int is_jmp;
81
82#define JMP_NOJMP 0
83#define JMP_DIRECT 1
84#define JMP_INDIRECT 2
85 unsigned int jmp;
86 uint32_t jmp_pc;
87
88 int abort_at_next_insn;
89 int nr_nops;
90 struct TranslationBlock *tb;
91 int singlestep_enabled;
92} DisasContext;
93
94const static char *regnames[] =
95{
96 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
97 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
98 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
99 "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
100};
101
102const static char *special_regnames[] =
103{
104 "rpc", "rmsr", "sr2", "sr3", "sr4", "sr5", "sr6", "sr7",
105 "sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15",
106 "sr16", "sr17", "sr18"
107};
108
109/* Sign extend at translation time. */
110static inline int sign_extend(unsigned int val, unsigned int width)
111{
112 int sval;
113
114 /* LSL. */
115 val <<= 31 - width;
116 sval = val;
117 /* ASR. */
118 sval >>= 31 - width;
119 return sval;
120}
121
122static inline void t_sync_flags(DisasContext *dc)
123{
124 /* Synch the tb dependant flags between translator and runtime. */
125 if (dc->tb_flags != dc->synced_flags) {
126 tcg_gen_movi_tl(env_iflags, dc->tb_flags);
127 dc->synced_flags = dc->tb_flags;
128 }
129}
130
131static inline void t_gen_raise_exception(DisasContext *dc, uint32_t index)
132{
133 TCGv_i32 tmp = tcg_const_i32(index);
134
135 t_sync_flags(dc);
136 tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc);
137 gen_helper_raise_exception(tmp);
138 tcg_temp_free_i32(tmp);
139 dc->is_jmp = DISAS_UPDATE;
140}
141
142static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest)
143{
144 TranslationBlock *tb;
145 tb = dc->tb;
146 if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) {
147 tcg_gen_goto_tb(n);
148 tcg_gen_movi_tl(cpu_SR[SR_PC], dest);
149 tcg_gen_exit_tb((long)tb + n);
150 } else {
151 tcg_gen_movi_tl(cpu_SR[SR_PC], dest);
152 tcg_gen_exit_tb(0);
153 }
154}
155
156static inline TCGv *dec_alu_op_b(DisasContext *dc)
157{
158 if (dc->type_b) {
159 if (dc->tb_flags & IMM_FLAG)
160 tcg_gen_ori_tl(env_imm, env_imm, dc->imm);
161 else
162 tcg_gen_movi_tl(env_imm, (int32_t)((int16_t)dc->imm));
163 return &env_imm;
164 } else
165 return &cpu_R[dc->rb];
166}
167
168static void dec_add(DisasContext *dc)
169{
170 unsigned int k, c;
171
172 k = dc->opcode & 4;
173 c = dc->opcode & 2;
174
175 LOG_DIS("add%s%s%s r%d r%d r%d\n",
176 dc->type_b ? "i" : "", k ? "k" : "", c ? "c" : "",
177 dc->rd, dc->ra, dc->rb);
178
179 if (k && !c && dc->rd)
180 tcg_gen_add_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
181 else if (dc->rd)
182 gen_helper_addkc(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)),
183 tcg_const_tl(k), tcg_const_tl(c));
184 else {
185 TCGv d = tcg_temp_new();
186 gen_helper_addkc(d, cpu_R[dc->ra], *(dec_alu_op_b(dc)),
187 tcg_const_tl(k), tcg_const_tl(c));
188 tcg_temp_free(d);
189 }
190}
191
192static void dec_sub(DisasContext *dc)
193{
194 unsigned int u, cmp, k, c;
195
196 u = dc->imm & 2;
197 k = dc->opcode & 4;
198 c = dc->opcode & 2;
199 cmp = (dc->imm & 1) && (!dc->type_b) && k;
200
201 if (cmp) {
202 LOG_DIS("cmp%s r%d, r%d ir=%x\n", u ? "u" : "", dc->rd, dc->ra, dc->ir);
203 if (dc->rd) {
204 if (u)
205 gen_helper_cmpu(cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
206 else
207 gen_helper_cmp(cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
208 }
209 } else {
210 LOG_DIS("sub%s%s r%d, r%d r%d\n",
211 k ? "k" : "", c ? "c" : "", dc->rd, dc->ra, dc->rb);
212
213 if (!k || c) {
214 TCGv t;
215 t = tcg_temp_new();
216 if (dc->rd)
217 gen_helper_subkc(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)),
218 tcg_const_tl(k), tcg_const_tl(c));
219 else
220 gen_helper_subkc(t, cpu_R[dc->ra], *(dec_alu_op_b(dc)),
221 tcg_const_tl(k), tcg_const_tl(c));
222 tcg_temp_free(t);
223 }
224 else if (dc->rd)
225 tcg_gen_sub_tl(cpu_R[dc->rd], *(dec_alu_op_b(dc)), cpu_R[dc->ra]);
226 }
227}
228
229static void dec_pattern(DisasContext *dc)
230{
231 unsigned int mode;
232 int l1;
233
234 mode = dc->opcode & 3;
235 switch (mode) {
236 case 0:
237 /* pcmpbf. */
238 LOG_DIS("pcmpbf r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
239 if (dc->rd)
240 gen_helper_pcmpbf(cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
241 break;
242 case 2:
243 LOG_DIS("pcmpeq r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
244 if (dc->rd) {
245 TCGv t0 = tcg_temp_local_new();
246 l1 = gen_new_label();
247 tcg_gen_movi_tl(t0, 1);
248 tcg_gen_brcond_tl(TCG_COND_EQ,
249 cpu_R[dc->ra], cpu_R[dc->rb], l1);
250 tcg_gen_movi_tl(t0, 0);
251 gen_set_label(l1);
252 tcg_gen_mov_tl(cpu_R[dc->rd], t0);
253 tcg_temp_free(t0);
254 }
255 break;
256 case 3:
257 LOG_DIS("pcmpne r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
258 l1 = gen_new_label();
259 if (dc->rd) {
260 TCGv t0 = tcg_temp_local_new();
261 tcg_gen_movi_tl(t0, 1);
262 tcg_gen_brcond_tl(TCG_COND_NE,
263 cpu_R[dc->ra], cpu_R[dc->rb], l1);
264 tcg_gen_movi_tl(t0, 0);
265 gen_set_label(l1);
266 tcg_gen_mov_tl(cpu_R[dc->rd], t0);
267 tcg_temp_free(t0);
268 }
269 break;
270 default:
271 cpu_abort(dc->env,
272 "unsupported pattern insn opcode=%x\n", dc->opcode);
273 break;
274 }
275}
276
277static void dec_and(DisasContext *dc)
278{
279 unsigned int not;
280
281 if (!dc->type_b && (dc->imm & (1 << 10))) {
282 dec_pattern(dc);
283 return;
284 }
285
286 not = dc->opcode & (1 << 1);
287 LOG_DIS("and%s\n", not ? "n" : "");
288
289 if (!dc->rd)
290 return;
291
292 if (not) {
293 TCGv t = tcg_temp_new();
294 tcg_gen_not_tl(t, *(dec_alu_op_b(dc)));
295 tcg_gen_and_tl(cpu_R[dc->rd], cpu_R[dc->ra], t);
296 tcg_temp_free(t);
297 } else
298 tcg_gen_and_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
299}
300
301static void dec_or(DisasContext *dc)
302{
303 if (!dc->type_b && (dc->imm & (1 << 10))) {
304 dec_pattern(dc);
305 return;
306 }
307
308 LOG_DIS("or r%d r%d r%d imm=%x\n", dc->rd, dc->ra, dc->rb, dc->imm);
309 if (dc->rd)
310 tcg_gen_or_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
311}
312
313static void dec_xor(DisasContext *dc)
314{
315 if (!dc->type_b && (dc->imm & (1 << 10))) {
316 dec_pattern(dc);
317 return;
318 }
319
320 LOG_DIS("xor r%d\n", dc->rd);
321 if (dc->rd)
322 tcg_gen_xor_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
323}
324
325static void read_carry(DisasContext *dc, TCGv d)
326{
327 tcg_gen_shri_tl(d, cpu_SR[SR_MSR], 31);
328}
329
330static void write_carry(DisasContext *dc, TCGv v)
331{
332 TCGv t0 = tcg_temp_new();
333 tcg_gen_shli_tl(t0, v, 31);
334 tcg_gen_sari_tl(t0, t0, 31);
335 tcg_gen_mov_tl(env_debug, t0);
336 tcg_gen_andi_tl(t0, t0, (MSR_C | MSR_CC));
337 tcg_gen_andi_tl(cpu_SR[SR_MSR], cpu_SR[SR_MSR],
338 ~(MSR_C | MSR_CC));
339 tcg_gen_or_tl(cpu_SR[SR_MSR], cpu_SR[SR_MSR], t0);
340 tcg_temp_free(t0);
341}
342
343
344static inline void msr_read(DisasContext *dc, TCGv d)
345{
346 tcg_gen_mov_tl(d, cpu_SR[SR_MSR]);
347}
348
349static inline void msr_write(DisasContext *dc, TCGv v)
350{
351 dc->cpustate_changed = 1;
352 tcg_gen_mov_tl(cpu_SR[SR_MSR], v);
353 /* PVR, we have a processor version register. */
354 tcg_gen_ori_tl(cpu_SR[SR_MSR], cpu_SR[SR_MSR], (1 << 10));
355}
356
357static void dec_msr(DisasContext *dc)
358{
359 TCGv t0, t1;
360 unsigned int sr, to, rn;
361
362 sr = dc->imm & ((1 << 14) - 1);
363 to = dc->imm & (1 << 14);
364 dc->type_b = 1;
365 if (to)
366 dc->cpustate_changed = 1;
367
368 /* msrclr and msrset. */
369 if (!(dc->imm & (1 << 15))) {
370 unsigned int clr = dc->ir & (1 << 16);
371
372 LOG_DIS("msr%s r%d imm=%x\n", clr ? "clr" : "set",
373 dc->rd, dc->imm);
374 if (dc->rd)
375 msr_read(dc, cpu_R[dc->rd]);
376
377 t0 = tcg_temp_new();
378 t1 = tcg_temp_new();
379 msr_read(dc, t0);
380 tcg_gen_mov_tl(t1, *(dec_alu_op_b(dc)));
381
382 if (clr) {
383 tcg_gen_not_tl(t1, t1);
384 tcg_gen_and_tl(t0, t0, t1);
385 } else
386 tcg_gen_or_tl(t0, t0, t1);
387 msr_write(dc, t0);
388 tcg_temp_free(t0);
389 tcg_temp_free(t1);
390 tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc + 4);
391 dc->is_jmp = DISAS_UPDATE;
392 return;
393 }
394
395#if !defined(CONFIG_USER_ONLY)
396 /* Catch read/writes to the mmu block. */
397 if ((sr & ~0xff) == 0x1000) {
398 sr &= 7;
399 LOG_DIS("m%ss sr%d r%d imm=%x\n", to ? "t" : "f", sr, dc->ra, dc->imm);
400 if (to)
401 gen_helper_mmu_write(tcg_const_tl(sr), cpu_R[dc->ra]);
402 else
403 gen_helper_mmu_read(cpu_R[dc->rd], tcg_const_tl(sr));
404 return;
405 }
406#endif
407
408 if (to) {
409 LOG_DIS("m%ss sr%x r%d imm=%x\n", to ? "t" : "f", sr, dc->ra, dc->imm);
410 switch (sr) {
411 case 0:
412 break;
413 case 1:
414 msr_write(dc, cpu_R[dc->ra]);
415 break;
416 case 0x3:
417 tcg_gen_mov_tl(cpu_SR[SR_EAR], cpu_R[dc->ra]);
418 break;
419 case 0x5:
420 tcg_gen_mov_tl(cpu_SR[SR_ESR], cpu_R[dc->ra]);
421 break;
422 case 0x7:
423 /* Ignored at the moment. */
424 break;
425 default:
426 cpu_abort(dc->env, "unknown mts reg %x\n", sr);
427 break;
428 }
429 } else {
430 LOG_DIS("m%ss r%d sr%x imm=%x\n", to ? "t" : "f", dc->rd, sr, dc->imm);
431
432 switch (sr) {
433 case 0:
434 tcg_gen_movi_tl(cpu_R[dc->rd], dc->pc);
435 break;
436 case 1:
437 msr_read(dc, cpu_R[dc->rd]);
438 break;
439 case 0x3:
440 tcg_gen_mov_tl(cpu_R[dc->rd], cpu_SR[SR_EAR]);
441 break;
442 case 0x5:
443 tcg_gen_mov_tl(cpu_R[dc->rd], cpu_SR[SR_ESR]);
444 break;
445 case 0x7:
446 tcg_gen_movi_tl(cpu_R[dc->rd], 0);
447 break;
448 case 0xb:
449 tcg_gen_mov_tl(cpu_R[dc->rd], cpu_SR[SR_BTR]);
450 break;
451 case 0x2000:
452 case 0x2001:
453 case 0x2002:
454 case 0x2003:
455 case 0x2004:
456 case 0x2005:
457 case 0x2006:
458 case 0x2007:
459 case 0x2008:
460 case 0x2009:
461 case 0x200a:
462 case 0x200b:
463 case 0x200c:
464 rn = sr & 0xf;
465 tcg_gen_ld_tl(cpu_R[dc->rd],
466 cpu_env, offsetof(CPUState, pvr.regs[rn]));
467 break;
468 default:
469 cpu_abort(dc->env, "unknown mfs reg %x\n", sr);
470 break;
471 }
472 }
473}
474
475/* 64-bit signed mul, lower result in d and upper in d2. */
476static void t_gen_muls(TCGv d, TCGv d2, TCGv a, TCGv b)
477{
478 TCGv_i64 t0, t1;
479
480 t0 = tcg_temp_new_i64();
481 t1 = tcg_temp_new_i64();
482
483 tcg_gen_ext_i32_i64(t0, a);
484 tcg_gen_ext_i32_i64(t1, b);
485 tcg_gen_mul_i64(t0, t0, t1);
486
487 tcg_gen_trunc_i64_i32(d, t0);
488 tcg_gen_shri_i64(t0, t0, 32);
489 tcg_gen_trunc_i64_i32(d2, t0);
490
491 tcg_temp_free_i64(t0);
492 tcg_temp_free_i64(t1);
493}
494
495/* 64-bit unsigned muls, lower result in d and upper in d2. */
496static void t_gen_mulu(TCGv d, TCGv d2, TCGv a, TCGv b)
497{
498 TCGv_i64 t0, t1;
499
500 t0 = tcg_temp_new_i64();
501 t1 = tcg_temp_new_i64();
502
503 tcg_gen_extu_i32_i64(t0, a);
504 tcg_gen_extu_i32_i64(t1, b);
505 tcg_gen_mul_i64(t0, t0, t1);
506
507 tcg_gen_trunc_i64_i32(d, t0);
508 tcg_gen_shri_i64(t0, t0, 32);
509 tcg_gen_trunc_i64_i32(d2, t0);
510
511 tcg_temp_free_i64(t0);
512 tcg_temp_free_i64(t1);
513}
514
515/* Multiplier unit. */
516static void dec_mul(DisasContext *dc)
517{
518 TCGv d[2];
519 unsigned int subcode;
520
521 subcode = dc->imm & 3;
522 d[0] = tcg_temp_new();
523 d[1] = tcg_temp_new();
524
525 if (dc->type_b) {
526 LOG_DIS("muli r%d r%d %x\n", dc->rd, dc->ra, dc->imm);
527 t_gen_mulu(cpu_R[dc->rd], d[1], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
528 goto done;
529 }
530
531 switch (subcode) {
532 case 0:
533 LOG_DIS("mul r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
534 t_gen_mulu(cpu_R[dc->rd], d[1], cpu_R[dc->ra], cpu_R[dc->rb]);
535 break;
536 case 1:
537 LOG_DIS("mulh r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
538 t_gen_muls(d[0], cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
539 break;
540 case 2:
541 LOG_DIS("mulhsu r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
542 t_gen_muls(d[0], cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
543 break;
544 case 3:
545 LOG_DIS("mulhu r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
546 t_gen_mulu(d[0], cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
547 break;
548 default:
549 cpu_abort(dc->env, "unknown MUL insn %x\n", subcode);
550 break;
551 }
552done:
553 tcg_temp_free(d[0]);
554 tcg_temp_free(d[1]);
555}
556
557/* Div unit. */
558static void dec_div(DisasContext *dc)
559{
560 unsigned int u;
561
562 u = dc->imm & 2;
563 LOG_DIS("div\n");
564
565 /* FIXME: support div by zero exceptions. */
566 if (u)
567 gen_helper_divu(cpu_R[dc->rd], *(dec_alu_op_b(dc)), cpu_R[dc->ra]);
568 else
569 gen_helper_divs(cpu_R[dc->rd], *(dec_alu_op_b(dc)), cpu_R[dc->ra]);
570 if (!dc->rd)
571 tcg_gen_movi_tl(cpu_R[dc->rd], 0);
572}
573
574static void dec_barrel(DisasContext *dc)
575{
576 TCGv t0;
577 unsigned int s, t;
578
579 s = dc->imm & (1 << 10);
580 t = dc->imm & (1 << 9);
581
582 LOG_DIS("bs%s%s r%d r%d r%d\n",
583 s ? "l" : "r", t ? "a" : "l", dc->rd, dc->ra, dc->rb);
584
585 t0 = tcg_temp_new();
586
587 tcg_gen_mov_tl(t0, *(dec_alu_op_b(dc)));
588 tcg_gen_andi_tl(t0, t0, 31);
589
590 if (s)
591 tcg_gen_shl_tl(cpu_R[dc->rd], cpu_R[dc->ra], t0);
592 else {
593 if (t)
594 tcg_gen_sar_tl(cpu_R[dc->rd], cpu_R[dc->ra], t0);
595 else
596 tcg_gen_shr_tl(cpu_R[dc->rd], cpu_R[dc->ra], t0);
597 }
598}
599
600static void dec_bit(DisasContext *dc)
601{
602 TCGv t0, t1;
603 unsigned int op;
604
605 op = dc->ir & ((1 << 8) - 1);
606 switch (op) {
607 case 0x21:
608 /* src. */
609 t0 = tcg_temp_new();
610
611 LOG_DIS("src r%d r%d\n", dc->rd, dc->ra);
612 tcg_gen_andi_tl(t0, cpu_R[dc->ra], 1);
613 if (dc->rd) {
614 t1 = tcg_temp_new();
615 read_carry(dc, t1);
616 tcg_gen_shli_tl(t1, t1, 31);
617
618 tcg_gen_shri_tl(cpu_R[dc->rd], cpu_R[dc->ra], 1);
619 tcg_gen_or_tl(cpu_R[dc->rd], cpu_R[dc->rd], t1);
620 tcg_temp_free(t1);
621 }
622
623 /* Update carry. */
624 write_carry(dc, t0);
625 tcg_temp_free(t0);
626 break;
627
628 case 0x1:
629 case 0x41:
630 /* srl. */
631 t0 = tcg_temp_new();
632 LOG_DIS("srl r%d r%d\n", dc->rd, dc->ra);
633
634 /* Update carry. */
635 tcg_gen_andi_tl(t0, cpu_R[dc->ra], 1);
636 write_carry(dc, t0);
637 tcg_temp_free(t0);
638 if (dc->rd) {
639 if (op == 0x41)
640 tcg_gen_shri_tl(cpu_R[dc->rd], cpu_R[dc->ra], 1);
641 else
642 tcg_gen_sari_tl(cpu_R[dc->rd], cpu_R[dc->ra], 1);
643 }
644 break;
645 case 0x60:
646 LOG_DIS("ext8s r%d r%d\n", dc->rd, dc->ra);
647 tcg_gen_ext8s_i32(cpu_R[dc->rd], cpu_R[dc->ra]);
648 break;
649 case 0x61:
650 LOG_DIS("ext16s r%d r%d\n", dc->rd, dc->ra);
651 tcg_gen_ext16s_i32(cpu_R[dc->rd], cpu_R[dc->ra]);
652 break;
653 case 0x64:
654 /* wdc. */
655 LOG_DIS("wdc r%d\n", dc->ra);
656 break;
657 case 0x68:
658 /* wic. */
659 LOG_DIS("wic r%d\n", dc->ra);
660 break;
661 default:
662 cpu_abort(dc->env, "unknown bit oc=%x op=%x rd=%d ra=%d rb=%d\n",
663 dc->pc, op, dc->rd, dc->ra, dc->rb);
664 break;
665 }
666}
667
668static inline void sync_jmpstate(DisasContext *dc)
669{
670 if (dc->jmp == JMP_DIRECT) {
671 dc->jmp = JMP_INDIRECT;
672 tcg_gen_movi_tl(env_btaken, 1);
673 tcg_gen_movi_tl(env_btarget, dc->jmp_pc);
674 }
675}
676
677static void dec_imm(DisasContext *dc)
678{
679 LOG_DIS("imm %x\n", dc->imm << 16);
680 tcg_gen_movi_tl(env_imm, (dc->imm << 16));
681 dc->tb_flags |= IMM_FLAG;
682 dc->clear_imm = 0;
683}
684
685static inline void gen_load(DisasContext *dc, TCGv dst, TCGv addr,
686 unsigned int size)
687{
688 int mem_index = cpu_mmu_index(dc->env);
689
690 if (size == 1) {
691 tcg_gen_qemu_ld8u(dst, addr, mem_index);
692 } else if (size == 2) {
693 tcg_gen_qemu_ld16u(dst, addr, mem_index);
694 } else if (size == 4) {
695 tcg_gen_qemu_ld32u(dst, addr, mem_index);
696 } else
697 cpu_abort(dc->env, "Incorrect load size %d\n", size);
698}
699
700static inline TCGv *compute_ldst_addr(DisasContext *dc, TCGv *t)
701{
702 unsigned int extimm = dc->tb_flags & IMM_FLAG;
703
704 /* Treat the fast cases first. */
705 if (!dc->type_b) {
706 *t = tcg_temp_new();
707 tcg_gen_add_tl(*t, cpu_R[dc->ra], cpu_R[dc->rb]);
708 return t;
709 }
710 /* Immediate. */
711 if (!extimm) {
712 if (dc->imm == 0) {
713 return &cpu_R[dc->ra];
714 }
715 *t = tcg_temp_new();
716 tcg_gen_movi_tl(*t, (int32_t)((int16_t)dc->imm));
717 tcg_gen_add_tl(*t, cpu_R[dc->ra], *t);
718 } else {
719 *t = tcg_temp_new();
720 tcg_gen_add_tl(*t, cpu_R[dc->ra], *(dec_alu_op_b(dc)));
721 }
722
723 return t;
724}
725
726static void dec_load(DisasContext *dc)
727{
728 TCGv t, *addr;
729 unsigned int size;
730
731 size = 1 << (dc->opcode & 3);
732
733 LOG_DIS("l %x %d\n", dc->opcode, size);
734 t_sync_flags(dc);
735 addr = compute_ldst_addr(dc, &t);
736
737 /* If we get a fault on a dslot, the jmpstate better be in sync. */
738 sync_jmpstate(dc);
739 if (dc->rd)
740 gen_load(dc, cpu_R[dc->rd], *addr, size);
741 else {
742 gen_load(dc, env_imm, *addr, size);
743 }
744
745 if (addr == &t)
746 tcg_temp_free(t);
747}
748
749static void gen_store(DisasContext *dc, TCGv addr, TCGv val,
750 unsigned int size)
751{
752 int mem_index = cpu_mmu_index(dc->env);
753
754 if (size == 1)
755 tcg_gen_qemu_st8(val, addr, mem_index);
756 else if (size == 2) {
757 tcg_gen_qemu_st16(val, addr, mem_index);
758 } else if (size == 4) {
759 tcg_gen_qemu_st32(val, addr, mem_index);
760 } else
761 cpu_abort(dc->env, "Incorrect store size %d\n", size);
762}
763
764static void dec_store(DisasContext *dc)
765{
766 TCGv t, *addr;
767 unsigned int size;
768
769 size = 1 << (dc->opcode & 3);
770
771 LOG_DIS("s%d%s\n", size, dc->type_b ? "i" : "");
772 t_sync_flags(dc);
773 /* If we get a fault on a dslot, the jmpstate better be in sync. */
774 sync_jmpstate(dc);
775 addr = compute_ldst_addr(dc, &t);
776 gen_store(dc, *addr, cpu_R[dc->rd], size);
777 if (addr == &t)
778 tcg_temp_free(t);
779}
780
781static inline void eval_cc(DisasContext *dc, unsigned int cc,
782 TCGv d, TCGv a, TCGv b)
783{
784 int l1;
785
786 switch (cc) {
787 case CC_EQ:
788 l1 = gen_new_label();
789 tcg_gen_movi_tl(env_btaken, 1);
790 tcg_gen_brcond_tl(TCG_COND_EQ, a, b, l1);
791 tcg_gen_movi_tl(env_btaken, 0);
792 gen_set_label(l1);
793 break;
794 case CC_NE:
795 l1 = gen_new_label();
796 tcg_gen_movi_tl(env_btaken, 1);
797 tcg_gen_brcond_tl(TCG_COND_NE, a, b, l1);
798 tcg_gen_movi_tl(env_btaken, 0);
799 gen_set_label(l1);
800 break;
801 case CC_LT:
802 l1 = gen_new_label();
803 tcg_gen_movi_tl(env_btaken, 1);
804 tcg_gen_brcond_tl(TCG_COND_LT, a, b, l1);
805 tcg_gen_movi_tl(env_btaken, 0);
806 gen_set_label(l1);
807 break;
808 case CC_LE:
809 l1 = gen_new_label();
810 tcg_gen_movi_tl(env_btaken, 1);
811 tcg_gen_brcond_tl(TCG_COND_LE, a, b, l1);
812 tcg_gen_movi_tl(env_btaken, 0);
813 gen_set_label(l1);
814 break;
815 case CC_GE:
816 l1 = gen_new_label();
817 tcg_gen_movi_tl(env_btaken, 1);
818 tcg_gen_brcond_tl(TCG_COND_GE, a, b, l1);
819 tcg_gen_movi_tl(env_btaken, 0);
820 gen_set_label(l1);
821 break;
822 case CC_GT:
823 l1 = gen_new_label();
824 tcg_gen_movi_tl(env_btaken, 1);
825 tcg_gen_brcond_tl(TCG_COND_GT, a, b, l1);
826 tcg_gen_movi_tl(env_btaken, 0);
827 gen_set_label(l1);
828 break;
829 default:
830 cpu_abort(dc->env, "Unknown condition code %x.\n", cc);
831 break;
832 }
833}
834
835static void eval_cond_jmp(DisasContext *dc, TCGv pc_true, TCGv pc_false)
836{
837 int l1;
838
839 l1 = gen_new_label();
840 /* Conditional jmp. */
841 tcg_gen_mov_tl(cpu_SR[SR_PC], pc_false);
842 tcg_gen_brcondi_tl(TCG_COND_EQ, env_btaken, 0, l1);
843 tcg_gen_mov_tl(cpu_SR[SR_PC], pc_true);
844 gen_set_label(l1);
845}
846
847static void dec_bcc(DisasContext *dc)
848{
849 unsigned int cc;
850 unsigned int dslot;
851
852 cc = EXTRACT_FIELD(dc->ir, 21, 23);
853 dslot = dc->ir & (1 << 25);
854 LOG_DIS("bcc%s r%d %x\n", dslot ? "d" : "", dc->ra, dc->imm);
855
856 dc->delayed_branch = 1;
857 if (dslot) {
858 dc->delayed_branch = 2;
859 dc->tb_flags |= D_FLAG;
860 tcg_gen_st_tl(tcg_const_tl(dc->type_b && (dc->tb_flags & IMM_FLAG)),
861 cpu_env, offsetof(CPUState, bimm));
862 }
863
864 tcg_gen_movi_tl(env_btarget, dc->pc);
865 tcg_gen_add_tl(env_btarget, env_btarget, *(dec_alu_op_b(dc)));
866 eval_cc(dc, cc, env_btaken, cpu_R[dc->ra], tcg_const_tl(0));
867 dc->jmp = JMP_INDIRECT;
868}
869
870static void dec_br(DisasContext *dc)
871{
872 unsigned int dslot, link, abs;
873
874 dslot = dc->ir & (1 << 20);
875 abs = dc->ir & (1 << 19);
876 link = dc->ir & (1 << 18);
877 LOG_DIS("br%s%s%s%s imm=%x\n",
878 abs ? "a" : "", link ? "l" : "",
879 dc->type_b ? "i" : "", dslot ? "d" : "",
880 dc->imm);
881
882 dc->delayed_branch = 1;
883 if (dslot) {
884 dc->delayed_branch = 2;
885 dc->tb_flags |= D_FLAG;
886 tcg_gen_st_tl(tcg_const_tl(dc->type_b && (dc->tb_flags & IMM_FLAG)),
887 cpu_env, offsetof(CPUState, bimm));
888 }
889 if (link && dc->rd)
890 tcg_gen_movi_tl(cpu_R[dc->rd], dc->pc);
891
892 dc->jmp = JMP_INDIRECT;
893 if (abs) {
894 tcg_gen_movi_tl(env_btaken, 1);
895 tcg_gen_mov_tl(env_btarget, *(dec_alu_op_b(dc)));
896 if (link && !(dc->tb_flags & IMM_FLAG)
897 && (dc->imm == 8 || dc->imm == 0x18))
898 t_gen_raise_exception(dc, EXCP_BREAK);
899 if (dc->imm == 0)
900 t_gen_raise_exception(dc, EXCP_DEBUG);
901 } else {
902 if (dc->tb_flags & IMM_FLAG) {
903 tcg_gen_movi_tl(env_btaken, 1);
904 tcg_gen_movi_tl(env_btarget, dc->pc);
905 tcg_gen_add_tl(env_btarget, env_btarget, *(dec_alu_op_b(dc)));
906 } else {
907 dc->jmp = JMP_DIRECT;
908 dc->jmp_pc = dc->pc + (int32_t)((int16_t)dc->imm);
909 }
910 }
911}
912
913static inline void do_rti(DisasContext *dc)
914{
915 TCGv t0, t1;
916 t0 = tcg_temp_new();
917 t1 = tcg_temp_new();
918 tcg_gen_shri_tl(t0, cpu_SR[SR_MSR], 1);
919 tcg_gen_ori_tl(t1, cpu_SR[SR_MSR], MSR_IE);
920 tcg_gen_andi_tl(t0, t0, (MSR_VM | MSR_UM));
921
922 tcg_gen_andi_tl(t1, t1, ~(MSR_VM | MSR_UM));
923 tcg_gen_or_tl(t1, t1, t0);
924 msr_write(dc, t1);
925 tcg_temp_free(t1);
926 tcg_temp_free(t0);
927 dc->tb_flags &= ~DRTI_FLAG;
928}
929
930static inline void do_rtb(DisasContext *dc)
931{
932 TCGv t0, t1;
933 t0 = tcg_temp_new();
934 t1 = tcg_temp_new();
935 tcg_gen_andi_tl(t1, cpu_SR[SR_MSR], ~MSR_BIP);
936 tcg_gen_shri_tl(t0, t1, 1);
937 tcg_gen_andi_tl(t0, t0, (MSR_VM | MSR_UM));
938
939 tcg_gen_andi_tl(t1, t1, ~(MSR_VM | MSR_UM));
940 tcg_gen_or_tl(t1, t1, t0);
941 msr_write(dc, t1);
942 tcg_temp_free(t1);
943 tcg_temp_free(t0);
944 dc->tb_flags &= ~DRTB_FLAG;
945}
946
947static inline void do_rte(DisasContext *dc)
948{
949 TCGv t0, t1;
950 t0 = tcg_temp_new();
951 t1 = tcg_temp_new();
952
953 tcg_gen_ori_tl(t1, cpu_SR[SR_MSR], MSR_EE);
954 tcg_gen_andi_tl(t1, t1, ~MSR_EIP);
955 tcg_gen_shri_tl(t0, t1, 1);
956 tcg_gen_andi_tl(t0, t0, (MSR_VM | MSR_UM));
957
958 tcg_gen_andi_tl(t1, t1, ~(MSR_VM | MSR_UM));
959 tcg_gen_or_tl(t1, t1, t0);
960 msr_write(dc, t1);
961 tcg_temp_free(t1);
962 tcg_temp_free(t0);
963 dc->tb_flags &= ~DRTE_FLAG;
964}
965
966static void dec_rts(DisasContext *dc)
967{
968 unsigned int b_bit, i_bit, e_bit;
969
970 i_bit = dc->ir & (1 << 21);
971 b_bit = dc->ir & (1 << 22);
972 e_bit = dc->ir & (1 << 23);
973
974 dc->delayed_branch = 2;
975 dc->tb_flags |= D_FLAG;
976 tcg_gen_st_tl(tcg_const_tl(dc->type_b && (dc->tb_flags & IMM_FLAG)),
977 cpu_env, offsetof(CPUState, bimm));
978
979 if (i_bit) {
980 LOG_DIS("rtid ir=%x\n", dc->ir);
981 dc->tb_flags |= DRTI_FLAG;
982 } else if (b_bit) {
983 LOG_DIS("rtbd ir=%x\n", dc->ir);
984 dc->tb_flags |= DRTB_FLAG;
985 } else if (e_bit) {
986 LOG_DIS("rted ir=%x\n", dc->ir);
987 dc->tb_flags |= DRTE_FLAG;
988 } else
989 LOG_DIS("rts ir=%x\n", dc->ir);
990
991 tcg_gen_movi_tl(env_btaken, 1);
992 tcg_gen_add_tl(env_btarget, cpu_R[dc->ra], *(dec_alu_op_b(dc)));
993}
994
995static void dec_null(DisasContext *dc)
996{
997 qemu_log ("unknown insn pc=%x opc=%x\n", dc->pc, dc->opcode);
998 dc->abort_at_next_insn = 1;
999}
1000
1001static struct decoder_info {
1002 struct {
1003 uint32_t bits;
1004 uint32_t mask;
1005 };
1006 void (*dec)(DisasContext *dc);
1007} decinfo[] = {
1008 {DEC_ADD, dec_add},
1009 {DEC_SUB, dec_sub},
1010 {DEC_AND, dec_and},
1011 {DEC_XOR, dec_xor},
1012 {DEC_OR, dec_or},
1013 {DEC_BIT, dec_bit},
1014 {DEC_BARREL, dec_barrel},
1015 {DEC_LD, dec_load},
1016 {DEC_ST, dec_store},
1017 {DEC_IMM, dec_imm},
1018 {DEC_BR, dec_br},
1019 {DEC_BCC, dec_bcc},
1020 {DEC_RTS, dec_rts},
1021 {DEC_MUL, dec_mul},
1022 {DEC_DIV, dec_div},
1023 {DEC_MSR, dec_msr},
1024 {{0, 0}, dec_null}
1025};
1026
1027static inline void decode(DisasContext *dc)
1028{
1029 uint32_t ir;
1030 int i;
1031
1032 if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP)))
1033 tcg_gen_debug_insn_start(dc->pc);
1034
1035 dc->ir = ir = ldl_code(dc->pc);
1036 LOG_DIS("%8.8x\t", dc->ir);
1037
1038 if (dc->ir)
1039 dc->nr_nops = 0;
1040 else {
1041 LOG_DIS("nr_nops=%d\t", dc->nr_nops);
1042 dc->nr_nops++;
1043 if (dc->nr_nops > 4)
1044 cpu_abort(dc->env, "fetching nop sequence\n");
1045 }
1046 /* bit 2 seems to indicate insn type. */
1047 dc->type_b = ir & (1 << 29);
1048
1049 dc->opcode = EXTRACT_FIELD(ir, 26, 31);
1050 dc->rd = EXTRACT_FIELD(ir, 21, 25);
1051 dc->ra = EXTRACT_FIELD(ir, 16, 20);
1052 dc->rb = EXTRACT_FIELD(ir, 11, 15);
1053 dc->imm = EXTRACT_FIELD(ir, 0, 15);
1054
1055 /* Large switch for all insns. */
1056 for (i = 0; i < ARRAY_SIZE(decinfo); i++) {
1057 if ((dc->opcode & decinfo[i].mask) == decinfo[i].bits) {
1058 decinfo[i].dec(dc);
1059 break;
1060 }
1061 }
1062}
1063
1064
1065static void check_breakpoint(CPUState *env, DisasContext *dc)
1066{
1067 CPUBreakpoint *bp;
1068
1069 if (unlikely(!TAILQ_EMPTY(&env->breakpoints))) {
1070 TAILQ_FOREACH(bp, &env->breakpoints, entry) {
1071 if (bp->pc == dc->pc) {
1072 t_gen_raise_exception(dc, EXCP_DEBUG);
1073 dc->is_jmp = DISAS_UPDATE;
1074 }
1075 }
1076 }
1077}
1078
1079/* generate intermediate code for basic block 'tb'. */
1080static void
1081gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb,
1082 int search_pc)
1083{
1084 uint16_t *gen_opc_end;
1085 uint32_t pc_start;
1086 int j, lj;
1087 struct DisasContext ctx;
1088 struct DisasContext *dc = &ctx;
1089 uint32_t next_page_start, org_flags;
1090 target_ulong npc;
1091 int num_insns;
1092 int max_insns;
1093
1094 qemu_log_try_set_file(stderr);
1095
1096 pc_start = tb->pc;
1097 dc->env = env;
1098 dc->tb = tb;
1099 org_flags = dc->synced_flags = dc->tb_flags = tb->flags;
1100
1101 gen_opc_end = gen_opc_buf + OPC_MAX_SIZE;
1102
1103 dc->is_jmp = DISAS_NEXT;
1104 dc->jmp = 0;
1105 dc->delayed_branch = !!(dc->tb_flags & D_FLAG);
1106 dc->ppc = pc_start;
1107 dc->pc = pc_start;
1108 dc->cache_pc = -1;
1109 dc->singlestep_enabled = env->singlestep_enabled;
1110 dc->cpustate_changed = 0;
1111 dc->abort_at_next_insn = 0;
1112 dc->nr_nops = 0;
1113
1114 if (pc_start & 3)
1115 cpu_abort(env, "Microblaze: unaligned PC=%x\n", pc_start);
1116
1117 if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
1118#if !SIM_COMPAT
1119 qemu_log("--------------\n");
1120 log_cpu_state(env, 0);
1121#endif
1122 }
1123
1124 next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
1125 lj = -1;
1126 num_insns = 0;
1127 max_insns = tb->cflags & CF_COUNT_MASK;
1128 if (max_insns == 0)
1129 max_insns = CF_COUNT_MASK;
1130
1131 gen_icount_start();
1132 do
1133 {
1134#if SIM_COMPAT
1135 if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
1136 tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc);
1137 gen_helper_debug();
1138 }
1139#endif
1140 check_breakpoint(env, dc);
1141
1142 if (search_pc) {
1143 j = gen_opc_ptr - gen_opc_buf;
1144 if (lj < j) {
1145 lj++;
1146 while (lj < j)
1147 gen_opc_instr_start[lj++] = 0;
1148 }
1149 gen_opc_pc[lj] = dc->pc;
1150 gen_opc_instr_start[lj] = 1;
1151 gen_opc_icount[lj] = num_insns;
1152 }
1153
1154 /* Pretty disas. */
1155 LOG_DIS("%8.8x:\t", dc->pc);
1156
1157 if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO))
1158 gen_io_start();
1159
1160 dc->clear_imm = 1;
1161 decode(dc);
1162 if (dc->clear_imm)
1163 dc->tb_flags &= ~IMM_FLAG;
1164 dc->ppc = dc->pc;
1165 dc->pc += 4;
1166 num_insns++;
1167
1168 if (dc->delayed_branch) {
1169 dc->delayed_branch--;
1170 if (!dc->delayed_branch) {
1171 if (dc->tb_flags & DRTI_FLAG)
1172 do_rti(dc);
1173 if (dc->tb_flags & DRTB_FLAG)
1174 do_rtb(dc);
1175 if (dc->tb_flags & DRTE_FLAG)
1176 do_rte(dc);
1177 /* Clear the delay slot flag. */
1178 dc->tb_flags &= ~D_FLAG;
1179 /* If it is a direct jump, try direct chaining. */
1180 if (dc->jmp != JMP_DIRECT) {
1181 eval_cond_jmp(dc, env_btarget, tcg_const_tl(dc->pc));
1182 dc->is_jmp = DISAS_JUMP;
1183 }
1184 break;
1185 }
1186 }
1187 if (env->singlestep_enabled)
1188 break;
1189 } while (!dc->is_jmp && !dc->cpustate_changed
1190 && gen_opc_ptr < gen_opc_end
1191 && !singlestep
1192 && (dc->pc < next_page_start)
1193 && num_insns < max_insns);
1194
1195 npc = dc->pc;
1196 if (dc->jmp == JMP_DIRECT) {
1197 if (dc->tb_flags & D_FLAG) {
1198 dc->is_jmp = DISAS_UPDATE;
1199 tcg_gen_movi_tl(cpu_SR[SR_PC], npc);
1200 sync_jmpstate(dc);
1201 } else
1202 npc = dc->jmp_pc;
1203 }
1204
1205 if (tb->cflags & CF_LAST_IO)
1206 gen_io_end();
1207 /* Force an update if the per-tb cpu state has changed. */
1208 if (dc->is_jmp == DISAS_NEXT
1209 && (dc->cpustate_changed || org_flags != dc->tb_flags)) {
1210 dc->is_jmp = DISAS_UPDATE;
1211 tcg_gen_movi_tl(cpu_SR[SR_PC], npc);
1212 }
1213 t_sync_flags(dc);
1214
1215 if (unlikely(env->singlestep_enabled)) {
1216 t_gen_raise_exception(dc, EXCP_DEBUG);
1217 if (dc->is_jmp == DISAS_NEXT)
1218 tcg_gen_movi_tl(cpu_SR[SR_PC], npc);
1219 } else {
1220 switch(dc->is_jmp) {
1221 case DISAS_NEXT:
1222 gen_goto_tb(dc, 1, npc);
1223 break;
1224 default:
1225 case DISAS_JUMP:
1226 case DISAS_UPDATE:
1227 /* indicate that the hash table must be used
1228 to find the next TB */
1229 tcg_gen_exit_tb(0);
1230 break;
1231 case DISAS_TB_JUMP:
1232 /* nothing more to generate */
1233 break;
1234 }
1235 }
1236 gen_icount_end(tb, num_insns);
1237 *gen_opc_ptr = INDEX_op_end;
1238 if (search_pc) {
1239 j = gen_opc_ptr - gen_opc_buf;
1240 lj++;
1241 while (lj <= j)
1242 gen_opc_instr_start[lj++] = 0;
1243 } else {
1244 tb->size = dc->pc - pc_start;
1245 tb->icount = num_insns;
1246 }
1247
1248#ifdef DEBUG_DISAS
1249#if !SIM_COMPAT
1250 if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
1251 qemu_log("\n");
1252#if DISAS_GNU
1253 log_target_disas(pc_start, dc->pc - pc_start, 0);
1254#endif
1255 qemu_log("\nisize=%d osize=%zd\n",
1256 dc->pc - pc_start, gen_opc_ptr - gen_opc_buf);
1257 }
1258#endif
1259#endif
1260 assert(!dc->abort_at_next_insn);
1261}
1262
1263void gen_intermediate_code (CPUState *env, struct TranslationBlock *tb)
1264{
1265 gen_intermediate_code_internal(env, tb, 0);
1266}
1267
1268void gen_intermediate_code_pc (CPUState *env, struct TranslationBlock *tb)
1269{
1270 gen_intermediate_code_internal(env, tb, 1);
1271}
1272
1273void cpu_dump_state (CPUState *env, FILE *f,
1274 int (*cpu_fprintf)(FILE *f, const char *fmt, ...),
1275 int flags)
1276{
1277 int i;
1278
1279 if (!env || !f)
1280 return;
1281
1282 cpu_fprintf(f, "IN: PC=%x %s\n",
1283 env->sregs[SR_PC], lookup_symbol(env->sregs[SR_PC]));
1284 cpu_fprintf(f, "rmsr=%x resr=%x debug[%x] imm=%x iflags=%x\n",
1285 env->sregs[SR_MSR], env->sregs[SR_ESR],
1286 env->debug, env->imm, env->iflags);
1287 cpu_fprintf(f, "btaken=%d btarget=%x mode=%s(saved=%s)\n",
1288 env->btaken, env->btarget,
1289 (env->sregs[SR_MSR] & MSR_UM) ? "user" : "kernel",
1290 (env->sregs[SR_MSR] & MSR_UMS) ? "user" : "kernel");
1291 for (i = 0; i < 32; i++) {
1292 cpu_fprintf(f, "r%2.2d=%8.8x ", i, env->regs[i]);
1293 if ((i + 1) % 4 == 0)
1294 cpu_fprintf(f, "\n");
1295 }
1296 cpu_fprintf(f, "\n\n");
1297}
1298
1299CPUState *cpu_mb_init (const char *cpu_model)
1300{
1301 CPUState *env;
1302 static int tcg_initialized = 0;
1303 int i;
1304
1305 env = qemu_mallocz(sizeof(CPUState));
1306
1307 cpu_exec_init(env);
1308 cpu_reset(env);
1309
1310 env->pvr.regs[0] = PVR0_PVR_FULL_MASK \
1311 | PVR0_USE_BARREL_MASK \
1312 | PVR0_USE_DIV_MASK \
1313 | PVR0_USE_HW_MUL_MASK \
1314 | PVR0_USE_EXC_MASK \
1315 | PVR0_USE_ICACHE_MASK \
1316 | PVR0_USE_DCACHE_MASK \
1317 | PVR0_USE_MMU \
1318 | (0xb << 8);
1319 env->pvr.regs[2] = PVR2_D_OPB_MASK \
1320 | PVR2_D_LMB_MASK \
1321 | PVR2_I_OPB_MASK \
1322 | PVR2_I_LMB_MASK \
1323 | PVR2_USE_MSR_INSTR \
1324 | PVR2_USE_PCMP_INSTR \
1325 | PVR2_USE_BARREL_MASK \
1326 | PVR2_USE_DIV_MASK \
1327 | PVR2_USE_HW_MUL_MASK \
1328 | PVR2_USE_MUL64_MASK \
1329 | 0;
1330 env->pvr.regs[10] = 0x0c000000; /* Default to spartan 3a dsp family. */
1331 env->pvr.regs[11] = PVR11_USE_MMU;
1332
1333 if (tcg_initialized)
1334 return env;
1335
1336 tcg_initialized = 1;
1337
1338 cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
1339
1340 env_debug = tcg_global_mem_new(TCG_AREG0,
1341 offsetof(CPUState, debug),
1342 "debug0");
1343 env_iflags = tcg_global_mem_new(TCG_AREG0,
1344 offsetof(CPUState, iflags),
1345 "iflags");
1346 env_imm = tcg_global_mem_new(TCG_AREG0,
1347 offsetof(CPUState, imm),
1348 "imm");
1349 env_btarget = tcg_global_mem_new(TCG_AREG0,
1350 offsetof(CPUState, btarget),
1351 "btarget");
1352 env_btaken = tcg_global_mem_new(TCG_AREG0,
1353 offsetof(CPUState, btaken),
1354 "btaken");
1355 for (i = 0; i < ARRAY_SIZE(cpu_R); i++) {
1356 cpu_R[i] = tcg_global_mem_new(TCG_AREG0,
1357 offsetof(CPUState, regs[i]),
1358 regnames[i]);
1359 }
1360 for (i = 0; i < ARRAY_SIZE(cpu_SR); i++) {
1361 cpu_SR[i] = tcg_global_mem_new(TCG_AREG0,
1362 offsetof(CPUState, sregs[i]),
1363 special_regnames[i]);
1364 }
1365#define GEN_HELPER 2
1366#include "helper.h"
1367
1368 return env;
1369}
1370
1371void cpu_reset (CPUState *env)
1372{
1373 if (qemu_loglevel_mask(CPU_LOG_RESET)) {
1374 qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
1375 log_cpu_state(env, 0);
1376 }
1377
1378 memset(env, 0, offsetof(CPUMBState, breakpoints));
1379 tlb_flush(env, 1);
1380
1381 env->sregs[SR_MSR] = 0;
1382#if defined(CONFIG_USER_ONLY)
1383 /* start in user mode with interrupts enabled. */
1384 env->pvr.regs[10] = 0x0c000000; /* Spartan 3a dsp. */
1385#else
1386 mmu_init(&env->mmu);
1387#endif
1388}
1389
1390void gen_pc_load(CPUState *env, struct TranslationBlock *tb,
1391 unsigned long searched_pc, int pc_pos, void *puc)
1392{
1393 env->sregs[SR_PC] = gen_opc_pc[pc_pos];
1394}
Mirror of https://git.qemu.org/git/qemu.git