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coverity: Fix g_malloc_n-like models
[qemu/ar7.git] / target-lm32 / translate.c
blob81a204f5cfddb974a8c3e50f395478bea2636618
1 /*
2 * LatticeMico32 main translation routines.
3 *
4 * Copyright (c) 2010 Michael Walle <michael@walle.cc>
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
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 */
19
20 #include "cpu.h"
21 #include "disas/disas.h"
22 #include "exec/helper-proto.h"
23 #include "tcg-op.h"
24
25 #include "exec/cpu_ldst.h"
26 #include "hw/lm32/lm32_pic.h"
27
28 #include "exec/helper-gen.h"
29
30 #include "trace-tcg.h"
31
32
33 #define DISAS_LM32 1
34 #if DISAS_LM32
35 # define LOG_DIS(...) qemu_log_mask(CPU_LOG_TB_IN_ASM, ## __VA_ARGS__)
36 #else
37 # define LOG_DIS(...) do { } while (0)
38 #endif
39
40 #define EXTRACT_FIELD(src, start, end) \
41 (((src) >> start) & ((1 << (end - start + 1)) - 1))
42
43 #define MEM_INDEX 0
44
45 static TCGv_ptr cpu_env;
46 static TCGv cpu_R[32];
47 static TCGv cpu_pc;
48 static TCGv cpu_ie;
49 static TCGv cpu_icc;
50 static TCGv cpu_dcc;
51 static TCGv cpu_cc;
52 static TCGv cpu_cfg;
53 static TCGv cpu_eba;
54 static TCGv cpu_dc;
55 static TCGv cpu_deba;
56 static TCGv cpu_bp[4];
57 static TCGv cpu_wp[4];
58
59 #include "exec/gen-icount.h"
60
61 enum {
62 OP_FMT_RI,
63 OP_FMT_RR,
64 OP_FMT_CR,
65 OP_FMT_I
66 };
67
68 /* This is the state at translation time. */
69 typedef struct DisasContext {
70 target_ulong pc;
71
72 /* Decoder. */
73 int format;
74 uint32_t ir;
75 uint8_t opcode;
76 uint8_t r0, r1, r2, csr;
77 uint16_t imm5;
78 uint16_t imm16;
79 uint32_t imm26;
80
81 unsigned int delayed_branch;
82 unsigned int tb_flags, synced_flags; /* tb dependent flags. */
83 int is_jmp;
84
85 struct TranslationBlock *tb;
86 int singlestep_enabled;
87
88 uint32_t features;
89 uint8_t num_breakpoints;
90 uint8_t num_watchpoints;
91 } DisasContext;
92
93 static const char *regnames[] = {
94 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
95 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
96 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
97 "r24", "r25", "r26/gp", "r27/fp", "r28/sp", "r29/ra",
98 "r30/ea", "r31/ba", "bp0", "bp1", "bp2", "bp3", "wp0",
99 "wp1", "wp2", "wp3"
100 };
101
102 static inline int zero_extend(unsigned int val, int width)
103 {
104 return val & ((1 << width) - 1);
105 }
106
107 static inline int sign_extend(unsigned int val, int width)
108 {
109 int sval;
110
111 /* LSL. */
112 val <<= 32 - width;
113 sval = val;
114 /* ASR. */
115 sval >>= 32 - width;
116
117 return sval;
118 }
119
120 static inline void t_gen_raise_exception(DisasContext *dc, uint32_t index)
121 {
122 TCGv_i32 tmp = tcg_const_i32(index);
123
124 gen_helper_raise_exception(cpu_env, tmp);
125 tcg_temp_free_i32(tmp);
126 }
127
128 static inline void t_gen_illegal_insn(DisasContext *dc)
129 {
130 tcg_gen_movi_tl(cpu_pc, dc->pc);
131 gen_helper_ill(cpu_env);
132 }
133
134 static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest)
135 {
136 TranslationBlock *tb;
137
138 tb = dc->tb;
139 if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK) &&
140 likely(!dc->singlestep_enabled)) {
141 tcg_gen_goto_tb(n);
142 tcg_gen_movi_tl(cpu_pc, dest);
143 tcg_gen_exit_tb((uintptr_t)tb + n);
144 } else {
145 tcg_gen_movi_tl(cpu_pc, dest);
146 if (dc->singlestep_enabled) {
147 t_gen_raise_exception(dc, EXCP_DEBUG);
148 }
149 tcg_gen_exit_tb(0);
150 }
151 }
152
153 static void dec_add(DisasContext *dc)
154 {
155 if (dc->format == OP_FMT_RI) {
156 if (dc->r0 == R_R0) {
157 if (dc->r1 == R_R0 && dc->imm16 == 0) {
158 LOG_DIS("nop\n");
159 } else {
160 LOG_DIS("mvi r%d, %d\n", dc->r1, sign_extend(dc->imm16, 16));
161 }
162 } else {
163 LOG_DIS("addi r%d, r%d, %d\n", dc->r1, dc->r0,
164 sign_extend(dc->imm16, 16));
165 }
166 } else {
167 LOG_DIS("add r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
168 }
169
170 if (dc->format == OP_FMT_RI) {
171 tcg_gen_addi_tl(cpu_R[dc->r1], cpu_R[dc->r0],
172 sign_extend(dc->imm16, 16));
173 } else {
174 tcg_gen_add_tl(cpu_R[dc->r2], cpu_R[dc->r0], cpu_R[dc->r1]);
175 }
176 }
177
178 static void dec_and(DisasContext *dc)
179 {
180 if (dc->format == OP_FMT_RI) {
181 LOG_DIS("andi r%d, r%d, %d\n", dc->r1, dc->r0,
182 zero_extend(dc->imm16, 16));
183 } else {
184 LOG_DIS("and r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
185 }
186
187 if (dc->format == OP_FMT_RI) {
188 tcg_gen_andi_tl(cpu_R[dc->r1], cpu_R[dc->r0],
189 zero_extend(dc->imm16, 16));
190 } else {
191 if (dc->r0 == 0 && dc->r1 == 0 && dc->r2 == 0) {
192 tcg_gen_movi_tl(cpu_pc, dc->pc + 4);
193 gen_helper_hlt(cpu_env);
194 } else {
195 tcg_gen_and_tl(cpu_R[dc->r2], cpu_R[dc->r0], cpu_R[dc->r1]);
196 }
197 }
198 }
199
200 static void dec_andhi(DisasContext *dc)
201 {
202 LOG_DIS("andhi r%d, r%d, %d\n", dc->r2, dc->r0, dc->imm16);
203
204 tcg_gen_andi_tl(cpu_R[dc->r1], cpu_R[dc->r0], (dc->imm16 << 16));
205 }
206
207 static void dec_b(DisasContext *dc)
208 {
209 if (dc->r0 == R_RA) {
210 LOG_DIS("ret\n");
211 } else if (dc->r0 == R_EA) {
212 LOG_DIS("eret\n");
213 } else if (dc->r0 == R_BA) {
214 LOG_DIS("bret\n");
215 } else {
216 LOG_DIS("b r%d\n", dc->r0);
217 }
218
219 /* restore IE.IE in case of an eret */
220 if (dc->r0 == R_EA) {
221 TCGv t0 = tcg_temp_new();
222 TCGLabel *l1 = gen_new_label();
223 tcg_gen_andi_tl(t0, cpu_ie, IE_EIE);
224 tcg_gen_ori_tl(cpu_ie, cpu_ie, IE_IE);
225 tcg_gen_brcondi_tl(TCG_COND_EQ, t0, IE_EIE, l1);
226 tcg_gen_andi_tl(cpu_ie, cpu_ie, ~IE_IE);
227 gen_set_label(l1);
228 tcg_temp_free(t0);
229 } else if (dc->r0 == R_BA) {
230 TCGv t0 = tcg_temp_new();
231 TCGLabel *l1 = gen_new_label();
232 tcg_gen_andi_tl(t0, cpu_ie, IE_BIE);
233 tcg_gen_ori_tl(cpu_ie, cpu_ie, IE_IE);
234 tcg_gen_brcondi_tl(TCG_COND_EQ, t0, IE_BIE, l1);
235 tcg_gen_andi_tl(cpu_ie, cpu_ie, ~IE_IE);
236 gen_set_label(l1);
237 tcg_temp_free(t0);
238 }
239 tcg_gen_mov_tl(cpu_pc, cpu_R[dc->r0]);
240
241 dc->is_jmp = DISAS_JUMP;
242 }
243
244 static void dec_bi(DisasContext *dc)
245 {
246 LOG_DIS("bi %d\n", sign_extend(dc->imm26 << 2, 26));
247
248 gen_goto_tb(dc, 0, dc->pc + (sign_extend(dc->imm26 << 2, 26)));
249
250 dc->is_jmp = DISAS_TB_JUMP;
251 }
252
253 static inline void gen_cond_branch(DisasContext *dc, int cond)
254 {
255 TCGLabel *l1 = gen_new_label();
256 tcg_gen_brcond_tl(cond, cpu_R[dc->r0], cpu_R[dc->r1], l1);
257 gen_goto_tb(dc, 0, dc->pc + 4);
258 gen_set_label(l1);
259 gen_goto_tb(dc, 1, dc->pc + (sign_extend(dc->imm16 << 2, 16)));
260 dc->is_jmp = DISAS_TB_JUMP;
261 }
262
263 static void dec_be(DisasContext *dc)
264 {
265 LOG_DIS("be r%d, r%d, %d\n", dc->r0, dc->r1,
266 sign_extend(dc->imm16, 16) * 4);
267
268 gen_cond_branch(dc, TCG_COND_EQ);
269 }
270
271 static void dec_bg(DisasContext *dc)
272 {
273 LOG_DIS("bg r%d, r%d, %d\n", dc->r0, dc->r1,
274 sign_extend(dc->imm16, 16 * 4));
275
276 gen_cond_branch(dc, TCG_COND_GT);
277 }
278
279 static void dec_bge(DisasContext *dc)
280 {
281 LOG_DIS("bge r%d, r%d, %d\n", dc->r0, dc->r1,
282 sign_extend(dc->imm16, 16) * 4);
283
284 gen_cond_branch(dc, TCG_COND_GE);
285 }
286
287 static void dec_bgeu(DisasContext *dc)
288 {
289 LOG_DIS("bgeu r%d, r%d, %d\n", dc->r0, dc->r1,
290 sign_extend(dc->imm16, 16) * 4);
291
292 gen_cond_branch(dc, TCG_COND_GEU);
293 }
294
295 static void dec_bgu(DisasContext *dc)
296 {
297 LOG_DIS("bgu r%d, r%d, %d\n", dc->r0, dc->r1,
298 sign_extend(dc->imm16, 16) * 4);
299
300 gen_cond_branch(dc, TCG_COND_GTU);
301 }
302
303 static void dec_bne(DisasContext *dc)
304 {
305 LOG_DIS("bne r%d, r%d, %d\n", dc->r0, dc->r1,
306 sign_extend(dc->imm16, 16) * 4);
307
308 gen_cond_branch(dc, TCG_COND_NE);
309 }
310
311 static void dec_call(DisasContext *dc)
312 {
313 LOG_DIS("call r%d\n", dc->r0);
314
315 tcg_gen_movi_tl(cpu_R[R_RA], dc->pc + 4);
316 tcg_gen_mov_tl(cpu_pc, cpu_R[dc->r0]);
317
318 dc->is_jmp = DISAS_JUMP;
319 }
320
321 static void dec_calli(DisasContext *dc)
322 {
323 LOG_DIS("calli %d\n", sign_extend(dc->imm26, 26) * 4);
324
325 tcg_gen_movi_tl(cpu_R[R_RA], dc->pc + 4);
326 gen_goto_tb(dc, 0, dc->pc + (sign_extend(dc->imm26 << 2, 26)));
327
328 dc->is_jmp = DISAS_TB_JUMP;
329 }
330
331 static inline void gen_compare(DisasContext *dc, int cond)
332 {
333 int rX = (dc->format == OP_FMT_RR) ? dc->r2 : dc->r1;
334 int rY = (dc->format == OP_FMT_RR) ? dc->r0 : dc->r0;
335 int rZ = (dc->format == OP_FMT_RR) ? dc->r1 : -1;
336 int i;
337
338 if (dc->format == OP_FMT_RI) {
339 switch (cond) {
340 case TCG_COND_GEU:
341 case TCG_COND_GTU:
342 i = zero_extend(dc->imm16, 16);
343 break;
344 default:
345 i = sign_extend(dc->imm16, 16);
346 break;
347 }
348
349 tcg_gen_setcondi_tl(cond, cpu_R[rX], cpu_R[rY], i);
350 } else {
351 tcg_gen_setcond_tl(cond, cpu_R[rX], cpu_R[rY], cpu_R[rZ]);
352 }
353 }
354
355 static void dec_cmpe(DisasContext *dc)
356 {
357 if (dc->format == OP_FMT_RI) {
358 LOG_DIS("cmpei r%d, r%d, %d\n", dc->r0, dc->r1,
359 sign_extend(dc->imm16, 16));
360 } else {
361 LOG_DIS("cmpe r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
362 }
363
364 gen_compare(dc, TCG_COND_EQ);
365 }
366
367 static void dec_cmpg(DisasContext *dc)
368 {
369 if (dc->format == OP_FMT_RI) {
370 LOG_DIS("cmpgi r%d, r%d, %d\n", dc->r0, dc->r1,
371 sign_extend(dc->imm16, 16));
372 } else {
373 LOG_DIS("cmpg r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
374 }
375
376 gen_compare(dc, TCG_COND_GT);
377 }
378
379 static void dec_cmpge(DisasContext *dc)
380 {
381 if (dc->format == OP_FMT_RI) {
382 LOG_DIS("cmpgei r%d, r%d, %d\n", dc->r0, dc->r1,
383 sign_extend(dc->imm16, 16));
384 } else {
385 LOG_DIS("cmpge r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
386 }
387
388 gen_compare(dc, TCG_COND_GE);
389 }
390
391 static void dec_cmpgeu(DisasContext *dc)
392 {
393 if (dc->format == OP_FMT_RI) {
394 LOG_DIS("cmpgeui r%d, r%d, %d\n", dc->r0, dc->r1,
395 zero_extend(dc->imm16, 16));
396 } else {
397 LOG_DIS("cmpgeu r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
398 }
399
400 gen_compare(dc, TCG_COND_GEU);
401 }
402
403 static void dec_cmpgu(DisasContext *dc)
404 {
405 if (dc->format == OP_FMT_RI) {
406 LOG_DIS("cmpgui r%d, r%d, %d\n", dc->r0, dc->r1,
407 zero_extend(dc->imm16, 16));
408 } else {
409 LOG_DIS("cmpgu r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
410 }
411
412 gen_compare(dc, TCG_COND_GTU);
413 }
414
415 static void dec_cmpne(DisasContext *dc)
416 {
417 if (dc->format == OP_FMT_RI) {
418 LOG_DIS("cmpnei r%d, r%d, %d\n", dc->r0, dc->r1,
419 sign_extend(dc->imm16, 16));
420 } else {
421 LOG_DIS("cmpne r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
422 }
423
424 gen_compare(dc, TCG_COND_NE);
425 }
426
427 static void dec_divu(DisasContext *dc)
428 {
429 TCGLabel *l1;
430
431 LOG_DIS("divu r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
432
433 if (!(dc->features & LM32_FEATURE_DIVIDE)) {
434 qemu_log_mask(LOG_GUEST_ERROR, "hardware divider is not available\n");
435 t_gen_illegal_insn(dc);
436 return;
437 }
438
439 l1 = gen_new_label();
440 tcg_gen_brcondi_tl(TCG_COND_NE, cpu_R[dc->r1], 0, l1);
441 tcg_gen_movi_tl(cpu_pc, dc->pc);
442 t_gen_raise_exception(dc, EXCP_DIVIDE_BY_ZERO);
443 gen_set_label(l1);
444 tcg_gen_divu_tl(cpu_R[dc->r2], cpu_R[dc->r0], cpu_R[dc->r1]);
445 }
446
447 static void dec_lb(DisasContext *dc)
448 {
449 TCGv t0;
450
451 LOG_DIS("lb r%d, (r%d+%d)\n", dc->r1, dc->r0, dc->imm16);
452
453 t0 = tcg_temp_new();
454 tcg_gen_addi_tl(t0, cpu_R[dc->r0], sign_extend(dc->imm16, 16));
455 tcg_gen_qemu_ld8s(cpu_R[dc->r1], t0, MEM_INDEX);
456 tcg_temp_free(t0);
457 }
458
459 static void dec_lbu(DisasContext *dc)
460 {
461 TCGv t0;
462
463 LOG_DIS("lbu r%d, (r%d+%d)\n", dc->r1, dc->r0, dc->imm16);
464
465 t0 = tcg_temp_new();
466 tcg_gen_addi_tl(t0, cpu_R[dc->r0], sign_extend(dc->imm16, 16));
467 tcg_gen_qemu_ld8u(cpu_R[dc->r1], t0, MEM_INDEX);
468 tcg_temp_free(t0);
469 }
470
471 static void dec_lh(DisasContext *dc)
472 {
473 TCGv t0;
474
475 LOG_DIS("lh r%d, (r%d+%d)\n", dc->r1, dc->r0, dc->imm16);
476
477 t0 = tcg_temp_new();
478 tcg_gen_addi_tl(t0, cpu_R[dc->r0], sign_extend(dc->imm16, 16));
479 tcg_gen_qemu_ld16s(cpu_R[dc->r1], t0, MEM_INDEX);
480 tcg_temp_free(t0);
481 }
482
483 static void dec_lhu(DisasContext *dc)
484 {
485 TCGv t0;
486
487 LOG_DIS("lhu r%d, (r%d+%d)\n", dc->r1, dc->r0, dc->imm16);
488
489 t0 = tcg_temp_new();
490 tcg_gen_addi_tl(t0, cpu_R[dc->r0], sign_extend(dc->imm16, 16));
491 tcg_gen_qemu_ld16u(cpu_R[dc->r1], t0, MEM_INDEX);
492 tcg_temp_free(t0);
493 }
494
495 static void dec_lw(DisasContext *dc)
496 {
497 TCGv t0;
498
499 LOG_DIS("lw r%d, (r%d+%d)\n", dc->r1, dc->r0, sign_extend(dc->imm16, 16));
500
501 t0 = tcg_temp_new();
502 tcg_gen_addi_tl(t0, cpu_R[dc->r0], sign_extend(dc->imm16, 16));
503 tcg_gen_qemu_ld32s(cpu_R[dc->r1], t0, MEM_INDEX);
504 tcg_temp_free(t0);
505 }
506
507 static void dec_modu(DisasContext *dc)
508 {
509 TCGLabel *l1;
510
511 LOG_DIS("modu r%d, r%d, %d\n", dc->r2, dc->r0, dc->r1);
512
513 if (!(dc->features & LM32_FEATURE_DIVIDE)) {
514 qemu_log_mask(LOG_GUEST_ERROR, "hardware divider is not available\n");
515 t_gen_illegal_insn(dc);
516 return;
517 }
518
519 l1 = gen_new_label();
520 tcg_gen_brcondi_tl(TCG_COND_NE, cpu_R[dc->r1], 0, l1);
521 tcg_gen_movi_tl(cpu_pc, dc->pc);
522 t_gen_raise_exception(dc, EXCP_DIVIDE_BY_ZERO);
523 gen_set_label(l1);
524 tcg_gen_remu_tl(cpu_R[dc->r2], cpu_R[dc->r0], cpu_R[dc->r1]);
525 }
526
527 static void dec_mul(DisasContext *dc)
528 {
529 if (dc->format == OP_FMT_RI) {
530 LOG_DIS("muli r%d, r%d, %d\n", dc->r0, dc->r1,
531 sign_extend(dc->imm16, 16));
532 } else {
533 LOG_DIS("mul r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
534 }
535
536 if (!(dc->features & LM32_FEATURE_MULTIPLY)) {
537 qemu_log_mask(LOG_GUEST_ERROR,
538 "hardware multiplier is not available\n");
539 t_gen_illegal_insn(dc);
540 return;
541 }
542
543 if (dc->format == OP_FMT_RI) {
544 tcg_gen_muli_tl(cpu_R[dc->r1], cpu_R[dc->r0],
545 sign_extend(dc->imm16, 16));
546 } else {
547 tcg_gen_mul_tl(cpu_R[dc->r2], cpu_R[dc->r0], cpu_R[dc->r1]);
548 }
549 }
550
551 static void dec_nor(DisasContext *dc)
552 {
553 if (dc->format == OP_FMT_RI) {
554 LOG_DIS("nori r%d, r%d, %d\n", dc->r0, dc->r1,
555 zero_extend(dc->imm16, 16));
556 } else {
557 LOG_DIS("nor r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
558 }
559
560 if (dc->format == OP_FMT_RI) {
561 TCGv t0 = tcg_temp_new();
562 tcg_gen_movi_tl(t0, zero_extend(dc->imm16, 16));
563 tcg_gen_nor_tl(cpu_R[dc->r1], cpu_R[dc->r0], t0);
564 tcg_temp_free(t0);
565 } else {
566 tcg_gen_nor_tl(cpu_R[dc->r2], cpu_R[dc->r0], cpu_R[dc->r1]);
567 }
568 }
569
570 static void dec_or(DisasContext *dc)
571 {
572 if (dc->format == OP_FMT_RI) {
573 LOG_DIS("ori r%d, r%d, %d\n", dc->r1, dc->r0,
574 zero_extend(dc->imm16, 16));
575 } else {
576 if (dc->r1 == R_R0) {
577 LOG_DIS("mv r%d, r%d\n", dc->r2, dc->r0);
578 } else {
579 LOG_DIS("or r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
580 }
581 }
582
583 if (dc->format == OP_FMT_RI) {
584 tcg_gen_ori_tl(cpu_R[dc->r1], cpu_R[dc->r0],
585 zero_extend(dc->imm16, 16));
586 } else {
587 tcg_gen_or_tl(cpu_R[dc->r2], cpu_R[dc->r0], cpu_R[dc->r1]);
588 }
589 }
590
591 static void dec_orhi(DisasContext *dc)
592 {
593 if (dc->r0 == R_R0) {
594 LOG_DIS("mvhi r%d, %d\n", dc->r1, dc->imm16);
595 } else {
596 LOG_DIS("orhi r%d, r%d, %d\n", dc->r1, dc->r0, dc->imm16);
597 }
598
599 tcg_gen_ori_tl(cpu_R[dc->r1], cpu_R[dc->r0], (dc->imm16 << 16));
600 }
601
602 static void dec_scall(DisasContext *dc)
603 {
604 switch (dc->imm5) {
605 case 2:
606 LOG_DIS("break\n");
607 tcg_gen_movi_tl(cpu_pc, dc->pc);
608 t_gen_raise_exception(dc, EXCP_BREAKPOINT);
609 break;
610 case 7:
611 LOG_DIS("scall\n");
612 tcg_gen_movi_tl(cpu_pc, dc->pc);
613 t_gen_raise_exception(dc, EXCP_SYSTEMCALL);
614 break;
615 default:
616 qemu_log_mask(LOG_GUEST_ERROR, "invalid opcode @0x%x", dc->pc);
617 t_gen_illegal_insn(dc);
618 break;
619 }
620 }
621
622 static void dec_rcsr(DisasContext *dc)
623 {
624 LOG_DIS("rcsr r%d, %d\n", dc->r2, dc->csr);
625
626 switch (dc->csr) {
627 case CSR_IE:
628 tcg_gen_mov_tl(cpu_R[dc->r2], cpu_ie);
629 break;
630 case CSR_IM:
631 gen_helper_rcsr_im(cpu_R[dc->r2], cpu_env);
632 break;
633 case CSR_IP:
634 gen_helper_rcsr_ip(cpu_R[dc->r2], cpu_env);
635 break;
636 case CSR_CC:
637 tcg_gen_mov_tl(cpu_R[dc->r2], cpu_cc);
638 break;
639 case CSR_CFG:
640 tcg_gen_mov_tl(cpu_R[dc->r2], cpu_cfg);
641 break;
642 case CSR_EBA:
643 tcg_gen_mov_tl(cpu_R[dc->r2], cpu_eba);
644 break;
645 case CSR_DC:
646 tcg_gen_mov_tl(cpu_R[dc->r2], cpu_dc);
647 break;
648 case CSR_DEBA:
649 tcg_gen_mov_tl(cpu_R[dc->r2], cpu_deba);
650 break;
651 case CSR_JTX:
652 gen_helper_rcsr_jtx(cpu_R[dc->r2], cpu_env);
653 break;
654 case CSR_JRX:
655 gen_helper_rcsr_jrx(cpu_R[dc->r2], cpu_env);
656 break;
657 case CSR_ICC:
658 case CSR_DCC:
659 case CSR_BP0:
660 case CSR_BP1:
661 case CSR_BP2:
662 case CSR_BP3:
663 case CSR_WP0:
664 case CSR_WP1:
665 case CSR_WP2:
666 case CSR_WP3:
667 qemu_log_mask(LOG_GUEST_ERROR, "invalid read access csr=%x\n", dc->csr);
668 break;
669 default:
670 qemu_log_mask(LOG_GUEST_ERROR, "read_csr: unknown csr=%x\n", dc->csr);
671 break;
672 }
673 }
674
675 static void dec_sb(DisasContext *dc)
676 {
677 TCGv t0;
678
679 LOG_DIS("sb (r%d+%d), r%d\n", dc->r0, dc->imm16, dc->r1);
680
681 t0 = tcg_temp_new();
682 tcg_gen_addi_tl(t0, cpu_R[dc->r0], sign_extend(dc->imm16, 16));
683 tcg_gen_qemu_st8(cpu_R[dc->r1], t0, MEM_INDEX);
684 tcg_temp_free(t0);
685 }
686
687 static void dec_sextb(DisasContext *dc)
688 {
689 LOG_DIS("sextb r%d, r%d\n", dc->r2, dc->r0);
690
691 if (!(dc->features & LM32_FEATURE_SIGN_EXTEND)) {
692 qemu_log_mask(LOG_GUEST_ERROR,
693 "hardware sign extender is not available\n");
694 t_gen_illegal_insn(dc);
695 return;
696 }
697
698 tcg_gen_ext8s_tl(cpu_R[dc->r2], cpu_R[dc->r0]);
699 }
700
701 static void dec_sexth(DisasContext *dc)
702 {
703 LOG_DIS("sexth r%d, r%d\n", dc->r2, dc->r0);
704
705 if (!(dc->features & LM32_FEATURE_SIGN_EXTEND)) {
706 qemu_log_mask(LOG_GUEST_ERROR,
707 "hardware sign extender is not available\n");
708 t_gen_illegal_insn(dc);
709 return;
710 }
711
712 tcg_gen_ext16s_tl(cpu_R[dc->r2], cpu_R[dc->r0]);
713 }
714
715 static void dec_sh(DisasContext *dc)
716 {
717 TCGv t0;
718
719 LOG_DIS("sh (r%d+%d), r%d\n", dc->r0, dc->imm16, dc->r1);
720
721 t0 = tcg_temp_new();
722 tcg_gen_addi_tl(t0, cpu_R[dc->r0], sign_extend(dc->imm16, 16));
723 tcg_gen_qemu_st16(cpu_R[dc->r1], t0, MEM_INDEX);
724 tcg_temp_free(t0);
725 }
726
727 static void dec_sl(DisasContext *dc)
728 {
729 if (dc->format == OP_FMT_RI) {
730 LOG_DIS("sli r%d, r%d, %d\n", dc->r1, dc->r0, dc->imm5);
731 } else {
732 LOG_DIS("sl r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
733 }
734
735 if (!(dc->features & LM32_FEATURE_SHIFT)) {
736 qemu_log_mask(LOG_GUEST_ERROR, "hardware shifter is not available\n");
737 t_gen_illegal_insn(dc);
738 return;
739 }
740
741 if (dc->format == OP_FMT_RI) {
742 tcg_gen_shli_tl(cpu_R[dc->r1], cpu_R[dc->r0], dc->imm5);
743 } else {
744 TCGv t0 = tcg_temp_new();
745 tcg_gen_andi_tl(t0, cpu_R[dc->r1], 0x1f);
746 tcg_gen_shl_tl(cpu_R[dc->r2], cpu_R[dc->r0], t0);
747 tcg_temp_free(t0);
748 }
749 }
750
751 static void dec_sr(DisasContext *dc)
752 {
753 if (dc->format == OP_FMT_RI) {
754 LOG_DIS("sri r%d, r%d, %d\n", dc->r1, dc->r0, dc->imm5);
755 } else {
756 LOG_DIS("sr r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
757 }
758
759 /* The real CPU (w/o hardware shifter) only supports right shift by exactly
760 * one bit */
761 if (dc->format == OP_FMT_RI) {
762 if (!(dc->features & LM32_FEATURE_SHIFT) && (dc->imm5 != 1)) {
763 qemu_log_mask(LOG_GUEST_ERROR,
764 "hardware shifter is not available\n");
765 t_gen_illegal_insn(dc);
766 return;
767 }
768 tcg_gen_sari_tl(cpu_R[dc->r1], cpu_R[dc->r0], dc->imm5);
769 } else {
770 TCGLabel *l1 = gen_new_label();
771 TCGLabel *l2 = gen_new_label();
772 TCGv t0 = tcg_temp_local_new();
773 tcg_gen_andi_tl(t0, cpu_R[dc->r1], 0x1f);
774
775 if (!(dc->features & LM32_FEATURE_SHIFT)) {
776 tcg_gen_brcondi_tl(TCG_COND_EQ, t0, 1, l1);
777 t_gen_illegal_insn(dc);
778 tcg_gen_br(l2);
779 }
780
781 gen_set_label(l1);
782 tcg_gen_sar_tl(cpu_R[dc->r2], cpu_R[dc->r0], t0);
783 gen_set_label(l2);
784
785 tcg_temp_free(t0);
786 }
787 }
788
789 static void dec_sru(DisasContext *dc)
790 {
791 if (dc->format == OP_FMT_RI) {
792 LOG_DIS("srui r%d, r%d, %d\n", dc->r1, dc->r0, dc->imm5);
793 } else {
794 LOG_DIS("sru r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
795 }
796
797 if (dc->format == OP_FMT_RI) {
798 if (!(dc->features & LM32_FEATURE_SHIFT) && (dc->imm5 != 1)) {
799 qemu_log_mask(LOG_GUEST_ERROR,
800 "hardware shifter is not available\n");
801 t_gen_illegal_insn(dc);
802 return;
803 }
804 tcg_gen_shri_tl(cpu_R[dc->r1], cpu_R[dc->r0], dc->imm5);
805 } else {
806 TCGLabel *l1 = gen_new_label();
807 TCGLabel *l2 = gen_new_label();
808 TCGv t0 = tcg_temp_local_new();
809 tcg_gen_andi_tl(t0, cpu_R[dc->r1], 0x1f);
810
811 if (!(dc->features & LM32_FEATURE_SHIFT)) {
812 tcg_gen_brcondi_tl(TCG_COND_EQ, t0, 1, l1);
813 t_gen_illegal_insn(dc);
814 tcg_gen_br(l2);
815 }
816
817 gen_set_label(l1);
818 tcg_gen_shr_tl(cpu_R[dc->r2], cpu_R[dc->r0], t0);
819 gen_set_label(l2);
820
821 tcg_temp_free(t0);
822 }
823 }
824
825 static void dec_sub(DisasContext *dc)
826 {
827 LOG_DIS("sub r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
828
829 tcg_gen_sub_tl(cpu_R[dc->r2], cpu_R[dc->r0], cpu_R[dc->r1]);
830 }
831
832 static void dec_sw(DisasContext *dc)
833 {
834 TCGv t0;
835
836 LOG_DIS("sw (r%d+%d), r%d\n", dc->r0, sign_extend(dc->imm16, 16), dc->r1);
837
838 t0 = tcg_temp_new();
839 tcg_gen_addi_tl(t0, cpu_R[dc->r0], sign_extend(dc->imm16, 16));
840 tcg_gen_qemu_st32(cpu_R[dc->r1], t0, MEM_INDEX);
841 tcg_temp_free(t0);
842 }
843
844 static void dec_user(DisasContext *dc)
845 {
846 LOG_DIS("user");
847
848 qemu_log_mask(LOG_GUEST_ERROR, "user instruction undefined\n");
849 t_gen_illegal_insn(dc);
850 }
851
852 static void dec_wcsr(DisasContext *dc)
853 {
854 int no;
855
856 LOG_DIS("wcsr r%d, %d\n", dc->r1, dc->csr);
857
858 switch (dc->csr) {
859 case CSR_IE:
860 tcg_gen_mov_tl(cpu_ie, cpu_R[dc->r1]);
861 tcg_gen_movi_tl(cpu_pc, dc->pc + 4);
862 dc->is_jmp = DISAS_UPDATE;
863 break;
864 case CSR_IM:
865 /* mark as an io operation because it could cause an interrupt */
866 if (dc->tb->cflags & CF_USE_ICOUNT) {
867 gen_io_start();
868 }
869 gen_helper_wcsr_im(cpu_env, cpu_R[dc->r1]);
870 tcg_gen_movi_tl(cpu_pc, dc->pc + 4);
871 if (dc->tb->cflags & CF_USE_ICOUNT) {
872 gen_io_end();
873 }
874 dc->is_jmp = DISAS_UPDATE;
875 break;
876 case CSR_IP:
877 /* mark as an io operation because it could cause an interrupt */
878 if (dc->tb->cflags & CF_USE_ICOUNT) {
879 gen_io_start();
880 }
881 gen_helper_wcsr_ip(cpu_env, cpu_R[dc->r1]);
882 tcg_gen_movi_tl(cpu_pc, dc->pc + 4);
883 if (dc->tb->cflags & CF_USE_ICOUNT) {
884 gen_io_end();
885 }
886 dc->is_jmp = DISAS_UPDATE;
887 break;
888 case CSR_ICC:
889 /* TODO */
890 break;
891 case CSR_DCC:
892 /* TODO */
893 break;
894 case CSR_EBA:
895 tcg_gen_mov_tl(cpu_eba, cpu_R[dc->r1]);
896 break;
897 case CSR_DEBA:
898 tcg_gen_mov_tl(cpu_deba, cpu_R[dc->r1]);
899 break;
900 case CSR_JTX:
901 gen_helper_wcsr_jtx(cpu_env, cpu_R[dc->r1]);
902 break;
903 case CSR_JRX:
904 gen_helper_wcsr_jrx(cpu_env, cpu_R[dc->r1]);
905 break;
906 case CSR_DC:
907 gen_helper_wcsr_dc(cpu_env, cpu_R[dc->r1]);
908 break;
909 case CSR_BP0:
910 case CSR_BP1:
911 case CSR_BP2:
912 case CSR_BP3:
913 no = dc->csr - CSR_BP0;
914 if (dc->num_breakpoints <= no) {
915 qemu_log_mask(LOG_GUEST_ERROR,
916 "breakpoint #%i is not available\n", no);
917 t_gen_illegal_insn(dc);
918 break;
919 }
920 gen_helper_wcsr_bp(cpu_env, cpu_R[dc->r1], tcg_const_i32(no));
921 break;
922 case CSR_WP0:
923 case CSR_WP1:
924 case CSR_WP2:
925 case CSR_WP3:
926 no = dc->csr - CSR_WP0;
927 if (dc->num_watchpoints <= no) {
928 qemu_log_mask(LOG_GUEST_ERROR,
929 "watchpoint #%i is not available\n", no);
930 t_gen_illegal_insn(dc);
931 break;
932 }
933 gen_helper_wcsr_wp(cpu_env, cpu_R[dc->r1], tcg_const_i32(no));
934 break;
935 case CSR_CC:
936 case CSR_CFG:
937 qemu_log_mask(LOG_GUEST_ERROR, "invalid write access csr=%x\n",
938 dc->csr);
939 break;
940 default:
941 qemu_log_mask(LOG_GUEST_ERROR, "write_csr: unknown csr=%x\n",
942 dc->csr);
943 break;
944 }
945 }
946
947 static void dec_xnor(DisasContext *dc)
948 {
949 if (dc->format == OP_FMT_RI) {
950 LOG_DIS("xnori r%d, r%d, %d\n", dc->r0, dc->r1,
951 zero_extend(dc->imm16, 16));
952 } else {
953 if (dc->r1 == R_R0) {
954 LOG_DIS("not r%d, r%d\n", dc->r2, dc->r0);
955 } else {
956 LOG_DIS("xnor r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
957 }
958 }
959
960 if (dc->format == OP_FMT_RI) {
961 tcg_gen_xori_tl(cpu_R[dc->r1], cpu_R[dc->r0],
962 zero_extend(dc->imm16, 16));
963 tcg_gen_not_tl(cpu_R[dc->r1], cpu_R[dc->r1]);
964 } else {
965 tcg_gen_eqv_tl(cpu_R[dc->r2], cpu_R[dc->r0], cpu_R[dc->r1]);
966 }
967 }
968
969 static void dec_xor(DisasContext *dc)
970 {
971 if (dc->format == OP_FMT_RI) {
972 LOG_DIS("xori r%d, r%d, %d\n", dc->r0, dc->r1,
973 zero_extend(dc->imm16, 16));
974 } else {
975 LOG_DIS("xor r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
976 }
977
978 if (dc->format == OP_FMT_RI) {
979 tcg_gen_xori_tl(cpu_R[dc->r1], cpu_R[dc->r0],
980 zero_extend(dc->imm16, 16));
981 } else {
982 tcg_gen_xor_tl(cpu_R[dc->r2], cpu_R[dc->r0], cpu_R[dc->r1]);
983 }
984 }
985
986 static void dec_ill(DisasContext *dc)
987 {
988 qemu_log_mask(LOG_GUEST_ERROR, "invalid opcode 0x%02x\n", dc->opcode);
989 t_gen_illegal_insn(dc);
990 }
991
992 typedef void (*DecoderInfo)(DisasContext *dc);
993 static const DecoderInfo decinfo[] = {
994 dec_sru, dec_nor, dec_mul, dec_sh, dec_lb, dec_sr, dec_xor, dec_lh,
995 dec_and, dec_xnor, dec_lw, dec_lhu, dec_sb, dec_add, dec_or, dec_sl,
996 dec_lbu, dec_be, dec_bg, dec_bge, dec_bgeu, dec_bgu, dec_sw, dec_bne,
997 dec_andhi, dec_cmpe, dec_cmpg, dec_cmpge, dec_cmpgeu, dec_cmpgu, dec_orhi,
998 dec_cmpne,
999 dec_sru, dec_nor, dec_mul, dec_divu, dec_rcsr, dec_sr, dec_xor, dec_ill,
1000 dec_and, dec_xnor, dec_ill, dec_scall, dec_sextb, dec_add, dec_or, dec_sl,
1001 dec_b, dec_modu, dec_sub, dec_user, dec_wcsr, dec_ill, dec_call, dec_sexth,
1002 dec_bi, dec_cmpe, dec_cmpg, dec_cmpge, dec_cmpgeu, dec_cmpgu, dec_calli,
1003 dec_cmpne
1004 };
1005
1006 static inline void decode(DisasContext *dc, uint32_t ir)
1007 {
1008 if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP | CPU_LOG_TB_OP_OPT))) {
1009 tcg_gen_debug_insn_start(dc->pc);
1010 }
1011
1012 dc->ir = ir;
1013 LOG_DIS("%8.8x\t", dc->ir);
1014
1015 dc->opcode = EXTRACT_FIELD(ir, 26, 31);
1016
1017 dc->imm5 = EXTRACT_FIELD(ir, 0, 4);
1018 dc->imm16 = EXTRACT_FIELD(ir, 0, 15);
1019 dc->imm26 = EXTRACT_FIELD(ir, 0, 25);
1020
1021 dc->csr = EXTRACT_FIELD(ir, 21, 25);
1022 dc->r0 = EXTRACT_FIELD(ir, 21, 25);
1023 dc->r1 = EXTRACT_FIELD(ir, 16, 20);
1024 dc->r2 = EXTRACT_FIELD(ir, 11, 15);
1025
1026 /* bit 31 seems to indicate insn type. */
1027 if (ir & (1 << 31)) {
1028 dc->format = OP_FMT_RR;
1029 } else {
1030 dc->format = OP_FMT_RI;
1031 }
1032
1033 assert(ARRAY_SIZE(decinfo) == 64);
1034 assert(dc->opcode < 64);
1035
1036 decinfo[dc->opcode](dc);
1037 }
1038
1039 static void check_breakpoint(CPULM32State *env, DisasContext *dc)
1040 {
1041 CPUState *cs = CPU(lm32_env_get_cpu(env));
1042 CPUBreakpoint *bp;
1043
1044 if (unlikely(!QTAILQ_EMPTY(&cs->breakpoints))) {
1045 QTAILQ_FOREACH(bp, &cs->breakpoints, entry) {
1046 if (bp->pc == dc->pc) {
1047 tcg_gen_movi_tl(cpu_pc, dc->pc);
1048 t_gen_raise_exception(dc, EXCP_DEBUG);
1049 dc->is_jmp = DISAS_UPDATE;
1050 }
1051 }
1052 }
1053 }
1054
1055 /* generate intermediate code for basic block 'tb'. */
1056 static inline
1057 void gen_intermediate_code_internal(LM32CPU *cpu,
1058 TranslationBlock *tb, bool search_pc)
1059 {
1060 CPUState *cs = CPU(cpu);
1061 CPULM32State *env = &cpu->env;
1062 struct DisasContext ctx, *dc = &ctx;
1063 uint32_t pc_start;
1064 int j, lj;
1065 uint32_t next_page_start;
1066 int num_insns;
1067 int max_insns;
1068
1069 pc_start = tb->pc;
1070 dc->features = cpu->features;
1071 dc->num_breakpoints = cpu->num_breakpoints;
1072 dc->num_watchpoints = cpu->num_watchpoints;
1073 dc->tb = tb;
1074
1075 dc->is_jmp = DISAS_NEXT;
1076 dc->pc = pc_start;
1077 dc->singlestep_enabled = cs->singlestep_enabled;
1078
1079 if (pc_start & 3) {
1080 qemu_log_mask(LOG_GUEST_ERROR,
1081 "unaligned PC=%x. Ignoring lowest bits.\n", pc_start);
1082 pc_start &= ~3;
1083 }
1084
1085 next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
1086 lj = -1;
1087 num_insns = 0;
1088 max_insns = tb->cflags & CF_COUNT_MASK;
1089 if (max_insns == 0) {
1090 max_insns = CF_COUNT_MASK;
1091 }
1092
1093 gen_tb_start(tb);
1094 do {
1095 check_breakpoint(env, dc);
1096
1097 if (search_pc) {
1098 j = tcg_op_buf_count();
1099 if (lj < j) {
1100 lj++;
1101 while (lj < j) {
1102 tcg_ctx.gen_opc_instr_start[lj++] = 0;
1103 }
1104 }
1105 tcg_ctx.gen_opc_pc[lj] = dc->pc;
1106 tcg_ctx.gen_opc_instr_start[lj] = 1;
1107 tcg_ctx.gen_opc_icount[lj] = num_insns;
1108 }
1109
1110 /* Pretty disas. */
1111 LOG_DIS("%8.8x:\t", dc->pc);
1112
1113 if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO)) {
1114 gen_io_start();
1115 }
1116
1117 decode(dc, cpu_ldl_code(env, dc->pc));
1118 dc->pc += 4;
1119 num_insns++;
1120
1121 } while (!dc->is_jmp
1122 && !tcg_op_buf_full()
1123 && !cs->singlestep_enabled
1124 && !singlestep
1125 && (dc->pc < next_page_start)
1126 && num_insns < max_insns);
1127
1128 if (tb->cflags & CF_LAST_IO) {
1129 gen_io_end();
1130 }
1131
1132 if (unlikely(cs->singlestep_enabled)) {
1133 if (dc->is_jmp == DISAS_NEXT) {
1134 tcg_gen_movi_tl(cpu_pc, dc->pc);
1135 }
1136 t_gen_raise_exception(dc, EXCP_DEBUG);
1137 } else {
1138 switch (dc->is_jmp) {
1139 case DISAS_NEXT:
1140 gen_goto_tb(dc, 1, dc->pc);
1141 break;
1142 default:
1143 case DISAS_JUMP:
1144 case DISAS_UPDATE:
1145 /* indicate that the hash table must be used
1146 to find the next TB */
1147 tcg_gen_exit_tb(0);
1148 break;
1149 case DISAS_TB_JUMP:
1150 /* nothing more to generate */
1151 break;
1152 }
1153 }
1154
1155 gen_tb_end(tb, num_insns);
1156
1157 if (search_pc) {
1158 j = tcg_op_buf_count();
1159 lj++;
1160 while (lj <= j) {
1161 tcg_ctx.gen_opc_instr_start[lj++] = 0;
1162 }
1163 } else {
1164 tb->size = dc->pc - pc_start;
1165 tb->icount = num_insns;
1166 }
1167
1168 #ifdef DEBUG_DISAS
1169 if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
1170 qemu_log("\n");
1171 log_target_disas(env, pc_start, dc->pc - pc_start, 0);
1172 qemu_log("\nisize=%d osize=%d\n",
1173 dc->pc - pc_start, tcg_op_buf_count());
1174 }
1175 #endif
1176 }
1177
1178 void gen_intermediate_code(CPULM32State *env, struct TranslationBlock *tb)
1179 {
1180 gen_intermediate_code_internal(lm32_env_get_cpu(env), tb, false);
1181 }
1182
1183 void gen_intermediate_code_pc(CPULM32State *env, struct TranslationBlock *tb)
1184 {
1185 gen_intermediate_code_internal(lm32_env_get_cpu(env), tb, true);
1186 }
1187
1188 void lm32_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf,
1189 int flags)
1190 {
1191 LM32CPU *cpu = LM32_CPU(cs);
1192 CPULM32State *env = &cpu->env;
1193 int i;
1194
1195 if (!env || !f) {
1196 return;
1197 }
1198
1199 cpu_fprintf(f, "IN: PC=%x %s\n",
1200 env->pc, lookup_symbol(env->pc));
1201
1202 cpu_fprintf(f, "ie=%8.8x (IE=%x EIE=%x BIE=%x) im=%8.8x ip=%8.8x\n",
1203 env->ie,
1204 (env->ie & IE_IE) ? 1 : 0,
1205 (env->ie & IE_EIE) ? 1 : 0,
1206 (env->ie & IE_BIE) ? 1 : 0,
1207 lm32_pic_get_im(env->pic_state),
1208 lm32_pic_get_ip(env->pic_state));
1209 cpu_fprintf(f, "eba=%8.8x deba=%8.8x\n",
1210 env->eba,
1211 env->deba);
1212
1213 for (i = 0; i < 32; i++) {
1214 cpu_fprintf(f, "r%2.2d=%8.8x ", i, env->regs[i]);
1215 if ((i + 1) % 4 == 0) {
1216 cpu_fprintf(f, "\n");
1217 }
1218 }
1219 cpu_fprintf(f, "\n\n");
1220 }
1221
1222 void restore_state_to_opc(CPULM32State *env, TranslationBlock *tb, int pc_pos)
1223 {
1224 env->pc = tcg_ctx.gen_opc_pc[pc_pos];
1225 }
1226
1227 void lm32_translate_init(void)
1228 {
1229 int i;
1230
1231 cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
1232
1233 for (i = 0; i < ARRAY_SIZE(cpu_R); i++) {
1234 cpu_R[i] = tcg_global_mem_new(TCG_AREG0,
1235 offsetof(CPULM32State, regs[i]),
1236 regnames[i]);
1237 }
1238
1239 for (i = 0; i < ARRAY_SIZE(cpu_bp); i++) {
1240 cpu_bp[i] = tcg_global_mem_new(TCG_AREG0,
1241 offsetof(CPULM32State, bp[i]),
1242 regnames[32+i]);
1243 }
1244
1245 for (i = 0; i < ARRAY_SIZE(cpu_wp); i++) {
1246 cpu_wp[i] = tcg_global_mem_new(TCG_AREG0,
1247 offsetof(CPULM32State, wp[i]),
1248 regnames[36+i]);
1249 }
1250
1251 cpu_pc = tcg_global_mem_new(TCG_AREG0,
1252 offsetof(CPULM32State, pc),
1253 "pc");
1254 cpu_ie = tcg_global_mem_new(TCG_AREG0,
1255 offsetof(CPULM32State, ie),
1256 "ie");
1257 cpu_icc = tcg_global_mem_new(TCG_AREG0,
1258 offsetof(CPULM32State, icc),
1259 "icc");
1260 cpu_dcc = tcg_global_mem_new(TCG_AREG0,
1261 offsetof(CPULM32State, dcc),
1262 "dcc");
1263 cpu_cc = tcg_global_mem_new(TCG_AREG0,
1264 offsetof(CPULM32State, cc),
1265 "cc");
1266 cpu_cfg = tcg_global_mem_new(TCG_AREG0,
1267 offsetof(CPULM32State, cfg),
1268 "cfg");
1269 cpu_eba = tcg_global_mem_new(TCG_AREG0,
1270 offsetof(CPULM32State, eba),
1271 "eba");
1272 cpu_dc = tcg_global_mem_new(TCG_AREG0,
1273 offsetof(CPULM32State, dc),
1274 "dc");
1275 cpu_deba = tcg_global_mem_new(TCG_AREG0,
1276 offsetof(CPULM32State, deba),
1277 "deba");
1278 }
1279
AR7 emulation for QEMU