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qcow: correctly propagate errors
[qemu/rayw.git] / tci.c
blob0202ed97d14ac6bb4bcb3aadc83886200c1d4a97
1 /*
2 * Tiny Code Interpreter for QEMU
3 *
4 * Copyright (c) 2009, 2011 Stefan Weil
5 *
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program 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
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 */
19
20 #include "config.h"
21
22 /* Defining NDEBUG disables assertions (which makes the code faster). */
23 #if !defined(CONFIG_DEBUG_TCG) && !defined(NDEBUG)
24 # define NDEBUG
25 #endif
26
27 #include "qemu-common.h"
28 #include "exec/exec-all.h" /* MAX_OPC_PARAM_IARGS */
29 #include "tcg-op.h"
30
31 /* Marker for missing code. */
32 #define TODO() \
33 do { \
34 fprintf(stderr, "TODO %s:%u: %s()\n", \
35 __FILE__, __LINE__, __func__); \
36 tcg_abort(); \
37 } while (0)
38
39 #if MAX_OPC_PARAM_IARGS != 5
40 # error Fix needed, number of supported input arguments changed!
41 #endif
42 #if TCG_TARGET_REG_BITS == 32
43 typedef uint64_t (*helper_function)(tcg_target_ulong, tcg_target_ulong,
44 tcg_target_ulong, tcg_target_ulong,
45 tcg_target_ulong, tcg_target_ulong,
46 tcg_target_ulong, tcg_target_ulong,
47 tcg_target_ulong, tcg_target_ulong);
48 #else
49 typedef uint64_t (*helper_function)(tcg_target_ulong, tcg_target_ulong,
50 tcg_target_ulong, tcg_target_ulong,
51 tcg_target_ulong);
52 #endif
53
54 /* Targets which don't use GETPC also don't need tci_tb_ptr
55 which makes them a little faster. */
56 #if defined(GETPC)
57 uintptr_t tci_tb_ptr;
58 #endif
59
60 static tcg_target_ulong tci_reg[TCG_TARGET_NB_REGS];
61
62 static tcg_target_ulong tci_read_reg(TCGReg index)
63 {
64 assert(index < ARRAY_SIZE(tci_reg));
65 return tci_reg[index];
66 }
67
68 #if TCG_TARGET_HAS_ext8s_i32 || TCG_TARGET_HAS_ext8s_i64
69 static int8_t tci_read_reg8s(TCGReg index)
70 {
71 return (int8_t)tci_read_reg(index);
72 }
73 #endif
74
75 #if TCG_TARGET_HAS_ext16s_i32 || TCG_TARGET_HAS_ext16s_i64
76 static int16_t tci_read_reg16s(TCGReg index)
77 {
78 return (int16_t)tci_read_reg(index);
79 }
80 #endif
81
82 #if TCG_TARGET_REG_BITS == 64
83 static int32_t tci_read_reg32s(TCGReg index)
84 {
85 return (int32_t)tci_read_reg(index);
86 }
87 #endif
88
89 static uint8_t tci_read_reg8(TCGReg index)
90 {
91 return (uint8_t)tci_read_reg(index);
92 }
93
94 static uint16_t tci_read_reg16(TCGReg index)
95 {
96 return (uint16_t)tci_read_reg(index);
97 }
98
99 static uint32_t tci_read_reg32(TCGReg index)
100 {
101 return (uint32_t)tci_read_reg(index);
102 }
103
104 #if TCG_TARGET_REG_BITS == 64
105 static uint64_t tci_read_reg64(TCGReg index)
106 {
107 return tci_read_reg(index);
108 }
109 #endif
110
111 static void tci_write_reg(TCGReg index, tcg_target_ulong value)
112 {
113 assert(index < ARRAY_SIZE(tci_reg));
114 assert(index != TCG_AREG0);
115 assert(index != TCG_REG_CALL_STACK);
116 tci_reg[index] = value;
117 }
118
119 static void tci_write_reg8s(TCGReg index, int8_t value)
120 {
121 tci_write_reg(index, value);
122 }
123
124 static void tci_write_reg16s(TCGReg index, int16_t value)
125 {
126 tci_write_reg(index, value);
127 }
128
129 #if TCG_TARGET_REG_BITS == 64
130 static void tci_write_reg32s(TCGReg index, int32_t value)
131 {
132 tci_write_reg(index, value);
133 }
134 #endif
135
136 static void tci_write_reg8(TCGReg index, uint8_t value)
137 {
138 tci_write_reg(index, value);
139 }
140
141 static void tci_write_reg16(TCGReg index, uint16_t value)
142 {
143 tci_write_reg(index, value);
144 }
145
146 static void tci_write_reg32(TCGReg index, uint32_t value)
147 {
148 tci_write_reg(index, value);
149 }
150
151 #if TCG_TARGET_REG_BITS == 32
152 static void tci_write_reg64(uint32_t high_index, uint32_t low_index,
153 uint64_t value)
154 {
155 tci_write_reg(low_index, value);
156 tci_write_reg(high_index, value >> 32);
157 }
158 #elif TCG_TARGET_REG_BITS == 64
159 static void tci_write_reg64(TCGReg index, uint64_t value)
160 {
161 tci_write_reg(index, value);
162 }
163 #endif
164
165 #if TCG_TARGET_REG_BITS == 32
166 /* Create a 64 bit value from two 32 bit values. */
167 static uint64_t tci_uint64(uint32_t high, uint32_t low)
168 {
169 return ((uint64_t)high << 32) + low;
170 }
171 #endif
172
173 /* Read constant (native size) from bytecode. */
174 static tcg_target_ulong tci_read_i(uint8_t **tb_ptr)
175 {
176 tcg_target_ulong value = *(tcg_target_ulong *)(*tb_ptr);
177 *tb_ptr += sizeof(value);
178 return value;
179 }
180
181 /* Read unsigned constant (32 bit) from bytecode. */
182 static uint32_t tci_read_i32(uint8_t **tb_ptr)
183 {
184 uint32_t value = *(uint32_t *)(*tb_ptr);
185 *tb_ptr += sizeof(value);
186 return value;
187 }
188
189 /* Read signed constant (32 bit) from bytecode. */
190 static int32_t tci_read_s32(uint8_t **tb_ptr)
191 {
192 int32_t value = *(int32_t *)(*tb_ptr);
193 *tb_ptr += sizeof(value);
194 return value;
195 }
196
197 #if TCG_TARGET_REG_BITS == 64
198 /* Read constant (64 bit) from bytecode. */
199 static uint64_t tci_read_i64(uint8_t **tb_ptr)
200 {
201 uint64_t value = *(uint64_t *)(*tb_ptr);
202 *tb_ptr += sizeof(value);
203 return value;
204 }
205 #endif
206
207 /* Read indexed register (native size) from bytecode. */
208 static tcg_target_ulong tci_read_r(uint8_t **tb_ptr)
209 {
210 tcg_target_ulong value = tci_read_reg(**tb_ptr);
211 *tb_ptr += 1;
212 return value;
213 }
214
215 /* Read indexed register (8 bit) from bytecode. */
216 static uint8_t tci_read_r8(uint8_t **tb_ptr)
217 {
218 uint8_t value = tci_read_reg8(**tb_ptr);
219 *tb_ptr += 1;
220 return value;
221 }
222
223 #if TCG_TARGET_HAS_ext8s_i32 || TCG_TARGET_HAS_ext8s_i64
224 /* Read indexed register (8 bit signed) from bytecode. */
225 static int8_t tci_read_r8s(uint8_t **tb_ptr)
226 {
227 int8_t value = tci_read_reg8s(**tb_ptr);
228 *tb_ptr += 1;
229 return value;
230 }
231 #endif
232
233 /* Read indexed register (16 bit) from bytecode. */
234 static uint16_t tci_read_r16(uint8_t **tb_ptr)
235 {
236 uint16_t value = tci_read_reg16(**tb_ptr);
237 *tb_ptr += 1;
238 return value;
239 }
240
241 #if TCG_TARGET_HAS_ext16s_i32 || TCG_TARGET_HAS_ext16s_i64
242 /* Read indexed register (16 bit signed) from bytecode. */
243 static int16_t tci_read_r16s(uint8_t **tb_ptr)
244 {
245 int16_t value = tci_read_reg16s(**tb_ptr);
246 *tb_ptr += 1;
247 return value;
248 }
249 #endif
250
251 /* Read indexed register (32 bit) from bytecode. */
252 static uint32_t tci_read_r32(uint8_t **tb_ptr)
253 {
254 uint32_t value = tci_read_reg32(**tb_ptr);
255 *tb_ptr += 1;
256 return value;
257 }
258
259 #if TCG_TARGET_REG_BITS == 32
260 /* Read two indexed registers (2 * 32 bit) from bytecode. */
261 static uint64_t tci_read_r64(uint8_t **tb_ptr)
262 {
263 uint32_t low = tci_read_r32(tb_ptr);
264 return tci_uint64(tci_read_r32(tb_ptr), low);
265 }
266 #elif TCG_TARGET_REG_BITS == 64
267 /* Read indexed register (32 bit signed) from bytecode. */
268 static int32_t tci_read_r32s(uint8_t **tb_ptr)
269 {
270 int32_t value = tci_read_reg32s(**tb_ptr);
271 *tb_ptr += 1;
272 return value;
273 }
274
275 /* Read indexed register (64 bit) from bytecode. */
276 static uint64_t tci_read_r64(uint8_t **tb_ptr)
277 {
278 uint64_t value = tci_read_reg64(**tb_ptr);
279 *tb_ptr += 1;
280 return value;
281 }
282 #endif
283
284 /* Read indexed register(s) with target address from bytecode. */
285 static target_ulong tci_read_ulong(uint8_t **tb_ptr)
286 {
287 target_ulong taddr = tci_read_r(tb_ptr);
288 #if TARGET_LONG_BITS > TCG_TARGET_REG_BITS
289 taddr += (uint64_t)tci_read_r(tb_ptr) << 32;
290 #endif
291 return taddr;
292 }
293
294 /* Read indexed register or constant (native size) from bytecode. */
295 static tcg_target_ulong tci_read_ri(uint8_t **tb_ptr)
296 {
297 tcg_target_ulong value;
298 TCGReg r = **tb_ptr;
299 *tb_ptr += 1;
300 if (r == TCG_CONST) {
301 value = tci_read_i(tb_ptr);
302 } else {
303 value = tci_read_reg(r);
304 }
305 return value;
306 }
307
308 /* Read indexed register or constant (32 bit) from bytecode. */
309 static uint32_t tci_read_ri32(uint8_t **tb_ptr)
310 {
311 uint32_t value;
312 TCGReg r = **tb_ptr;
313 *tb_ptr += 1;
314 if (r == TCG_CONST) {
315 value = tci_read_i32(tb_ptr);
316 } else {
317 value = tci_read_reg32(r);
318 }
319 return value;
320 }
321
322 #if TCG_TARGET_REG_BITS == 32
323 /* Read two indexed registers or constants (2 * 32 bit) from bytecode. */
324 static uint64_t tci_read_ri64(uint8_t **tb_ptr)
325 {
326 uint32_t low = tci_read_ri32(tb_ptr);
327 return tci_uint64(tci_read_ri32(tb_ptr), low);
328 }
329 #elif TCG_TARGET_REG_BITS == 64
330 /* Read indexed register or constant (64 bit) from bytecode. */
331 static uint64_t tci_read_ri64(uint8_t **tb_ptr)
332 {
333 uint64_t value;
334 TCGReg r = **tb_ptr;
335 *tb_ptr += 1;
336 if (r == TCG_CONST) {
337 value = tci_read_i64(tb_ptr);
338 } else {
339 value = tci_read_reg64(r);
340 }
341 return value;
342 }
343 #endif
344
345 static tcg_target_ulong tci_read_label(uint8_t **tb_ptr)
346 {
347 tcg_target_ulong label = tci_read_i(tb_ptr);
348 assert(label != 0);
349 return label;
350 }
351
352 static bool tci_compare32(uint32_t u0, uint32_t u1, TCGCond condition)
353 {
354 bool result = false;
355 int32_t i0 = u0;
356 int32_t i1 = u1;
357 switch (condition) {
358 case TCG_COND_EQ:
359 result = (u0 == u1);
360 break;
361 case TCG_COND_NE:
362 result = (u0 != u1);
363 break;
364 case TCG_COND_LT:
365 result = (i0 < i1);
366 break;
367 case TCG_COND_GE:
368 result = (i0 >= i1);
369 break;
370 case TCG_COND_LE:
371 result = (i0 <= i1);
372 break;
373 case TCG_COND_GT:
374 result = (i0 > i1);
375 break;
376 case TCG_COND_LTU:
377 result = (u0 < u1);
378 break;
379 case TCG_COND_GEU:
380 result = (u0 >= u1);
381 break;
382 case TCG_COND_LEU:
383 result = (u0 <= u1);
384 break;
385 case TCG_COND_GTU:
386 result = (u0 > u1);
387 break;
388 default:
389 TODO();
390 }
391 return result;
392 }
393
394 static bool tci_compare64(uint64_t u0, uint64_t u1, TCGCond condition)
395 {
396 bool result = false;
397 int64_t i0 = u0;
398 int64_t i1 = u1;
399 switch (condition) {
400 case TCG_COND_EQ:
401 result = (u0 == u1);
402 break;
403 case TCG_COND_NE:
404 result = (u0 != u1);
405 break;
406 case TCG_COND_LT:
407 result = (i0 < i1);
408 break;
409 case TCG_COND_GE:
410 result = (i0 >= i1);
411 break;
412 case TCG_COND_LE:
413 result = (i0 <= i1);
414 break;
415 case TCG_COND_GT:
416 result = (i0 > i1);
417 break;
418 case TCG_COND_LTU:
419 result = (u0 < u1);
420 break;
421 case TCG_COND_GEU:
422 result = (u0 >= u1);
423 break;
424 case TCG_COND_LEU:
425 result = (u0 <= u1);
426 break;
427 case TCG_COND_GTU:
428 result = (u0 > u1);
429 break;
430 default:
431 TODO();
432 }
433 return result;
434 }
435
436 /* Interpret pseudo code in tb. */
437 uintptr_t tcg_qemu_tb_exec(CPUArchState *env, uint8_t *tb_ptr)
438 {
439 long tcg_temps[CPU_TEMP_BUF_NLONGS];
440 uintptr_t sp_value = (uintptr_t)(tcg_temps + CPU_TEMP_BUF_NLONGS);
441 uintptr_t next_tb = 0;
442
443 tci_reg[TCG_AREG0] = (tcg_target_ulong)env;
444 tci_reg[TCG_REG_CALL_STACK] = sp_value;
445 assert(tb_ptr);
446
447 for (;;) {
448 TCGOpcode opc = tb_ptr[0];
449 #if !defined(NDEBUG)
450 uint8_t op_size = tb_ptr[1];
451 uint8_t *old_code_ptr = tb_ptr;
452 #endif
453 tcg_target_ulong t0;
454 tcg_target_ulong t1;
455 tcg_target_ulong t2;
456 tcg_target_ulong label;
457 TCGCond condition;
458 target_ulong taddr;
459 #ifndef CONFIG_SOFTMMU
460 tcg_target_ulong host_addr;
461 #endif
462 uint8_t tmp8;
463 uint16_t tmp16;
464 uint32_t tmp32;
465 uint64_t tmp64;
466 #if TCG_TARGET_REG_BITS == 32
467 uint64_t v64;
468 #endif
469
470 #if defined(GETPC)
471 tci_tb_ptr = (uintptr_t)tb_ptr;
472 #endif
473
474 /* Skip opcode and size entry. */
475 tb_ptr += 2;
476
477 switch (opc) {
478 case INDEX_op_end:
479 case INDEX_op_nop:
480 break;
481 case INDEX_op_nop1:
482 case INDEX_op_nop2:
483 case INDEX_op_nop3:
484 case INDEX_op_nopn:
485 case INDEX_op_discard:
486 TODO();
487 break;
488 case INDEX_op_set_label:
489 TODO();
490 break;
491 case INDEX_op_call:
492 t0 = tci_read_ri(&tb_ptr);
493 #if TCG_TARGET_REG_BITS == 32
494 tmp64 = ((helper_function)t0)(tci_read_reg(TCG_REG_R0),
495 tci_read_reg(TCG_REG_R1),
496 tci_read_reg(TCG_REG_R2),
497 tci_read_reg(TCG_REG_R3),
498 tci_read_reg(TCG_REG_R5),
499 tci_read_reg(TCG_REG_R6),
500 tci_read_reg(TCG_REG_R7),
501 tci_read_reg(TCG_REG_R8),
502 tci_read_reg(TCG_REG_R9),
503 tci_read_reg(TCG_REG_R10));
504 tci_write_reg(TCG_REG_R0, tmp64);
505 tci_write_reg(TCG_REG_R1, tmp64 >> 32);
506 #else
507 tmp64 = ((helper_function)t0)(tci_read_reg(TCG_REG_R0),
508 tci_read_reg(TCG_REG_R1),
509 tci_read_reg(TCG_REG_R2),
510 tci_read_reg(TCG_REG_R3),
511 tci_read_reg(TCG_REG_R5));
512 tci_write_reg(TCG_REG_R0, tmp64);
513 #endif
514 break;
515 case INDEX_op_br:
516 label = tci_read_label(&tb_ptr);
517 assert(tb_ptr == old_code_ptr + op_size);
518 tb_ptr = (uint8_t *)label;
519 continue;
520 case INDEX_op_setcond_i32:
521 t0 = *tb_ptr++;
522 t1 = tci_read_r32(&tb_ptr);
523 t2 = tci_read_ri32(&tb_ptr);
524 condition = *tb_ptr++;
525 tci_write_reg32(t0, tci_compare32(t1, t2, condition));
526 break;
527 #if TCG_TARGET_REG_BITS == 32
528 case INDEX_op_setcond2_i32:
529 t0 = *tb_ptr++;
530 tmp64 = tci_read_r64(&tb_ptr);
531 v64 = tci_read_ri64(&tb_ptr);
532 condition = *tb_ptr++;
533 tci_write_reg32(t0, tci_compare64(tmp64, v64, condition));
534 break;
535 #elif TCG_TARGET_REG_BITS == 64
536 case INDEX_op_setcond_i64:
537 t0 = *tb_ptr++;
538 t1 = tci_read_r64(&tb_ptr);
539 t2 = tci_read_ri64(&tb_ptr);
540 condition = *tb_ptr++;
541 tci_write_reg64(t0, tci_compare64(t1, t2, condition));
542 break;
543 #endif
544 case INDEX_op_mov_i32:
545 t0 = *tb_ptr++;
546 t1 = tci_read_r32(&tb_ptr);
547 tci_write_reg32(t0, t1);
548 break;
549 case INDEX_op_movi_i32:
550 t0 = *tb_ptr++;
551 t1 = tci_read_i32(&tb_ptr);
552 tci_write_reg32(t0, t1);
553 break;
554
555 /* Load/store operations (32 bit). */
556
557 case INDEX_op_ld8u_i32:
558 t0 = *tb_ptr++;
559 t1 = tci_read_r(&tb_ptr);
560 t2 = tci_read_s32(&tb_ptr);
561 tci_write_reg8(t0, *(uint8_t *)(t1 + t2));
562 break;
563 case INDEX_op_ld8s_i32:
564 case INDEX_op_ld16u_i32:
565 TODO();
566 break;
567 case INDEX_op_ld16s_i32:
568 TODO();
569 break;
570 case INDEX_op_ld_i32:
571 t0 = *tb_ptr++;
572 t1 = tci_read_r(&tb_ptr);
573 t2 = tci_read_s32(&tb_ptr);
574 tci_write_reg32(t0, *(uint32_t *)(t1 + t2));
575 break;
576 case INDEX_op_st8_i32:
577 t0 = tci_read_r8(&tb_ptr);
578 t1 = tci_read_r(&tb_ptr);
579 t2 = tci_read_s32(&tb_ptr);
580 *(uint8_t *)(t1 + t2) = t0;
581 break;
582 case INDEX_op_st16_i32:
583 t0 = tci_read_r16(&tb_ptr);
584 t1 = tci_read_r(&tb_ptr);
585 t2 = tci_read_s32(&tb_ptr);
586 *(uint16_t *)(t1 + t2) = t0;
587 break;
588 case INDEX_op_st_i32:
589 t0 = tci_read_r32(&tb_ptr);
590 t1 = tci_read_r(&tb_ptr);
591 t2 = tci_read_s32(&tb_ptr);
592 assert(t1 != sp_value || (int32_t)t2 < 0);
593 *(uint32_t *)(t1 + t2) = t0;
594 break;
595
596 /* Arithmetic operations (32 bit). */
597
598 case INDEX_op_add_i32:
599 t0 = *tb_ptr++;
600 t1 = tci_read_ri32(&tb_ptr);
601 t2 = tci_read_ri32(&tb_ptr);
602 tci_write_reg32(t0, t1 + t2);
603 break;
604 case INDEX_op_sub_i32:
605 t0 = *tb_ptr++;
606 t1 = tci_read_ri32(&tb_ptr);
607 t2 = tci_read_ri32(&tb_ptr);
608 tci_write_reg32(t0, t1 - t2);
609 break;
610 case INDEX_op_mul_i32:
611 t0 = *tb_ptr++;
612 t1 = tci_read_ri32(&tb_ptr);
613 t2 = tci_read_ri32(&tb_ptr);
614 tci_write_reg32(t0, t1 * t2);
615 break;
616 #if TCG_TARGET_HAS_div_i32
617 case INDEX_op_div_i32:
618 t0 = *tb_ptr++;
619 t1 = tci_read_ri32(&tb_ptr);
620 t2 = tci_read_ri32(&tb_ptr);
621 tci_write_reg32(t0, (int32_t)t1 / (int32_t)t2);
622 break;
623 case INDEX_op_divu_i32:
624 t0 = *tb_ptr++;
625 t1 = tci_read_ri32(&tb_ptr);
626 t2 = tci_read_ri32(&tb_ptr);
627 tci_write_reg32(t0, t1 / t2);
628 break;
629 case INDEX_op_rem_i32:
630 t0 = *tb_ptr++;
631 t1 = tci_read_ri32(&tb_ptr);
632 t2 = tci_read_ri32(&tb_ptr);
633 tci_write_reg32(t0, (int32_t)t1 % (int32_t)t2);
634 break;
635 case INDEX_op_remu_i32:
636 t0 = *tb_ptr++;
637 t1 = tci_read_ri32(&tb_ptr);
638 t2 = tci_read_ri32(&tb_ptr);
639 tci_write_reg32(t0, t1 % t2);
640 break;
641 #elif TCG_TARGET_HAS_div2_i32
642 case INDEX_op_div2_i32:
643 case INDEX_op_divu2_i32:
644 TODO();
645 break;
646 #endif
647 case INDEX_op_and_i32:
648 t0 = *tb_ptr++;
649 t1 = tci_read_ri32(&tb_ptr);
650 t2 = tci_read_ri32(&tb_ptr);
651 tci_write_reg32(t0, t1 & t2);
652 break;
653 case INDEX_op_or_i32:
654 t0 = *tb_ptr++;
655 t1 = tci_read_ri32(&tb_ptr);
656 t2 = tci_read_ri32(&tb_ptr);
657 tci_write_reg32(t0, t1 | t2);
658 break;
659 case INDEX_op_xor_i32:
660 t0 = *tb_ptr++;
661 t1 = tci_read_ri32(&tb_ptr);
662 t2 = tci_read_ri32(&tb_ptr);
663 tci_write_reg32(t0, t1 ^ t2);
664 break;
665
666 /* Shift/rotate operations (32 bit). */
667
668 case INDEX_op_shl_i32:
669 t0 = *tb_ptr++;
670 t1 = tci_read_ri32(&tb_ptr);
671 t2 = tci_read_ri32(&tb_ptr);
672 tci_write_reg32(t0, t1 << t2);
673 break;
674 case INDEX_op_shr_i32:
675 t0 = *tb_ptr++;
676 t1 = tci_read_ri32(&tb_ptr);
677 t2 = tci_read_ri32(&tb_ptr);
678 tci_write_reg32(t0, t1 >> t2);
679 break;
680 case INDEX_op_sar_i32:
681 t0 = *tb_ptr++;
682 t1 = tci_read_ri32(&tb_ptr);
683 t2 = tci_read_ri32(&tb_ptr);
684 tci_write_reg32(t0, ((int32_t)t1 >> t2));
685 break;
686 #if TCG_TARGET_HAS_rot_i32
687 case INDEX_op_rotl_i32:
688 t0 = *tb_ptr++;
689 t1 = tci_read_ri32(&tb_ptr);
690 t2 = tci_read_ri32(&tb_ptr);
691 tci_write_reg32(t0, rol32(t1, t2));
692 break;
693 case INDEX_op_rotr_i32:
694 t0 = *tb_ptr++;
695 t1 = tci_read_ri32(&tb_ptr);
696 t2 = tci_read_ri32(&tb_ptr);
697 tci_write_reg32(t0, ror32(t1, t2));
698 break;
699 #endif
700 #if TCG_TARGET_HAS_deposit_i32
701 case INDEX_op_deposit_i32:
702 t0 = *tb_ptr++;
703 t1 = tci_read_r32(&tb_ptr);
704 t2 = tci_read_r32(&tb_ptr);
705 tmp16 = *tb_ptr++;
706 tmp8 = *tb_ptr++;
707 tmp32 = (((1 << tmp8) - 1) << tmp16);
708 tci_write_reg32(t0, (t1 & ~tmp32) | ((t2 << tmp16) & tmp32));
709 break;
710 #endif
711 case INDEX_op_brcond_i32:
712 t0 = tci_read_r32(&tb_ptr);
713 t1 = tci_read_ri32(&tb_ptr);
714 condition = *tb_ptr++;
715 label = tci_read_label(&tb_ptr);
716 if (tci_compare32(t0, t1, condition)) {
717 assert(tb_ptr == old_code_ptr + op_size);
718 tb_ptr = (uint8_t *)label;
719 continue;
720 }
721 break;
722 #if TCG_TARGET_REG_BITS == 32
723 case INDEX_op_add2_i32:
724 t0 = *tb_ptr++;
725 t1 = *tb_ptr++;
726 tmp64 = tci_read_r64(&tb_ptr);
727 tmp64 += tci_read_r64(&tb_ptr);
728 tci_write_reg64(t1, t0, tmp64);
729 break;
730 case INDEX_op_sub2_i32:
731 t0 = *tb_ptr++;
732 t1 = *tb_ptr++;
733 tmp64 = tci_read_r64(&tb_ptr);
734 tmp64 -= tci_read_r64(&tb_ptr);
735 tci_write_reg64(t1, t0, tmp64);
736 break;
737 case INDEX_op_brcond2_i32:
738 tmp64 = tci_read_r64(&tb_ptr);
739 v64 = tci_read_ri64(&tb_ptr);
740 condition = *tb_ptr++;
741 label = tci_read_label(&tb_ptr);
742 if (tci_compare64(tmp64, v64, condition)) {
743 assert(tb_ptr == old_code_ptr + op_size);
744 tb_ptr = (uint8_t *)label;
745 continue;
746 }
747 break;
748 case INDEX_op_mulu2_i32:
749 t0 = *tb_ptr++;
750 t1 = *tb_ptr++;
751 t2 = tci_read_r32(&tb_ptr);
752 tmp64 = tci_read_r32(&tb_ptr);
753 tci_write_reg64(t1, t0, t2 * tmp64);
754 break;
755 #endif /* TCG_TARGET_REG_BITS == 32 */
756 #if TCG_TARGET_HAS_ext8s_i32
757 case INDEX_op_ext8s_i32:
758 t0 = *tb_ptr++;
759 t1 = tci_read_r8s(&tb_ptr);
760 tci_write_reg32(t0, t1);
761 break;
762 #endif
763 #if TCG_TARGET_HAS_ext16s_i32
764 case INDEX_op_ext16s_i32:
765 t0 = *tb_ptr++;
766 t1 = tci_read_r16s(&tb_ptr);
767 tci_write_reg32(t0, t1);
768 break;
769 #endif
770 #if TCG_TARGET_HAS_ext8u_i32
771 case INDEX_op_ext8u_i32:
772 t0 = *tb_ptr++;
773 t1 = tci_read_r8(&tb_ptr);
774 tci_write_reg32(t0, t1);
775 break;
776 #endif
777 #if TCG_TARGET_HAS_ext16u_i32
778 case INDEX_op_ext16u_i32:
779 t0 = *tb_ptr++;
780 t1 = tci_read_r16(&tb_ptr);
781 tci_write_reg32(t0, t1);
782 break;
783 #endif
784 #if TCG_TARGET_HAS_bswap16_i32
785 case INDEX_op_bswap16_i32:
786 t0 = *tb_ptr++;
787 t1 = tci_read_r16(&tb_ptr);
788 tci_write_reg32(t0, bswap16(t1));
789 break;
790 #endif
791 #if TCG_TARGET_HAS_bswap32_i32
792 case INDEX_op_bswap32_i32:
793 t0 = *tb_ptr++;
794 t1 = tci_read_r32(&tb_ptr);
795 tci_write_reg32(t0, bswap32(t1));
796 break;
797 #endif
798 #if TCG_TARGET_HAS_not_i32
799 case INDEX_op_not_i32:
800 t0 = *tb_ptr++;
801 t1 = tci_read_r32(&tb_ptr);
802 tci_write_reg32(t0, ~t1);
803 break;
804 #endif
805 #if TCG_TARGET_HAS_neg_i32
806 case INDEX_op_neg_i32:
807 t0 = *tb_ptr++;
808 t1 = tci_read_r32(&tb_ptr);
809 tci_write_reg32(t0, -t1);
810 break;
811 #endif
812 #if TCG_TARGET_REG_BITS == 64
813 case INDEX_op_mov_i64:
814 t0 = *tb_ptr++;
815 t1 = tci_read_r64(&tb_ptr);
816 tci_write_reg64(t0, t1);
817 break;
818 case INDEX_op_movi_i64:
819 t0 = *tb_ptr++;
820 t1 = tci_read_i64(&tb_ptr);
821 tci_write_reg64(t0, t1);
822 break;
823
824 /* Load/store operations (64 bit). */
825
826 case INDEX_op_ld8u_i64:
827 t0 = *tb_ptr++;
828 t1 = tci_read_r(&tb_ptr);
829 t2 = tci_read_s32(&tb_ptr);
830 tci_write_reg8(t0, *(uint8_t *)(t1 + t2));
831 break;
832 case INDEX_op_ld8s_i64:
833 case INDEX_op_ld16u_i64:
834 case INDEX_op_ld16s_i64:
835 TODO();
836 break;
837 case INDEX_op_ld32u_i64:
838 t0 = *tb_ptr++;
839 t1 = tci_read_r(&tb_ptr);
840 t2 = tci_read_s32(&tb_ptr);
841 tci_write_reg32(t0, *(uint32_t *)(t1 + t2));
842 break;
843 case INDEX_op_ld32s_i64:
844 t0 = *tb_ptr++;
845 t1 = tci_read_r(&tb_ptr);
846 t2 = tci_read_s32(&tb_ptr);
847 tci_write_reg32s(t0, *(int32_t *)(t1 + t2));
848 break;
849 case INDEX_op_ld_i64:
850 t0 = *tb_ptr++;
851 t1 = tci_read_r(&tb_ptr);
852 t2 = tci_read_s32(&tb_ptr);
853 tci_write_reg64(t0, *(uint64_t *)(t1 + t2));
854 break;
855 case INDEX_op_st8_i64:
856 t0 = tci_read_r8(&tb_ptr);
857 t1 = tci_read_r(&tb_ptr);
858 t2 = tci_read_s32(&tb_ptr);
859 *(uint8_t *)(t1 + t2) = t0;
860 break;
861 case INDEX_op_st16_i64:
862 t0 = tci_read_r16(&tb_ptr);
863 t1 = tci_read_r(&tb_ptr);
864 t2 = tci_read_s32(&tb_ptr);
865 *(uint16_t *)(t1 + t2) = t0;
866 break;
867 case INDEX_op_st32_i64:
868 t0 = tci_read_r32(&tb_ptr);
869 t1 = tci_read_r(&tb_ptr);
870 t2 = tci_read_s32(&tb_ptr);
871 *(uint32_t *)(t1 + t2) = t0;
872 break;
873 case INDEX_op_st_i64:
874 t0 = tci_read_r64(&tb_ptr);
875 t1 = tci_read_r(&tb_ptr);
876 t2 = tci_read_s32(&tb_ptr);
877 assert(t1 != sp_value || (int32_t)t2 < 0);
878 *(uint64_t *)(t1 + t2) = t0;
879 break;
880
881 /* Arithmetic operations (64 bit). */
882
883 case INDEX_op_add_i64:
884 t0 = *tb_ptr++;
885 t1 = tci_read_ri64(&tb_ptr);
886 t2 = tci_read_ri64(&tb_ptr);
887 tci_write_reg64(t0, t1 + t2);
888 break;
889 case INDEX_op_sub_i64:
890 t0 = *tb_ptr++;
891 t1 = tci_read_ri64(&tb_ptr);
892 t2 = tci_read_ri64(&tb_ptr);
893 tci_write_reg64(t0, t1 - t2);
894 break;
895 case INDEX_op_mul_i64:
896 t0 = *tb_ptr++;
897 t1 = tci_read_ri64(&tb_ptr);
898 t2 = tci_read_ri64(&tb_ptr);
899 tci_write_reg64(t0, t1 * t2);
900 break;
901 #if TCG_TARGET_HAS_div_i64
902 case INDEX_op_div_i64:
903 case INDEX_op_divu_i64:
904 case INDEX_op_rem_i64:
905 case INDEX_op_remu_i64:
906 TODO();
907 break;
908 #elif TCG_TARGET_HAS_div2_i64
909 case INDEX_op_div2_i64:
910 case INDEX_op_divu2_i64:
911 TODO();
912 break;
913 #endif
914 case INDEX_op_and_i64:
915 t0 = *tb_ptr++;
916 t1 = tci_read_ri64(&tb_ptr);
917 t2 = tci_read_ri64(&tb_ptr);
918 tci_write_reg64(t0, t1 & t2);
919 break;
920 case INDEX_op_or_i64:
921 t0 = *tb_ptr++;
922 t1 = tci_read_ri64(&tb_ptr);
923 t2 = tci_read_ri64(&tb_ptr);
924 tci_write_reg64(t0, t1 | t2);
925 break;
926 case INDEX_op_xor_i64:
927 t0 = *tb_ptr++;
928 t1 = tci_read_ri64(&tb_ptr);
929 t2 = tci_read_ri64(&tb_ptr);
930 tci_write_reg64(t0, t1 ^ t2);
931 break;
932
933 /* Shift/rotate operations (64 bit). */
934
935 case INDEX_op_shl_i64:
936 t0 = *tb_ptr++;
937 t1 = tci_read_ri64(&tb_ptr);
938 t2 = tci_read_ri64(&tb_ptr);
939 tci_write_reg64(t0, t1 << t2);
940 break;
941 case INDEX_op_shr_i64:
942 t0 = *tb_ptr++;
943 t1 = tci_read_ri64(&tb_ptr);
944 t2 = tci_read_ri64(&tb_ptr);
945 tci_write_reg64(t0, t1 >> t2);
946 break;
947 case INDEX_op_sar_i64:
948 t0 = *tb_ptr++;
949 t1 = tci_read_ri64(&tb_ptr);
950 t2 = tci_read_ri64(&tb_ptr);
951 tci_write_reg64(t0, ((int64_t)t1 >> t2));
952 break;
953 #if TCG_TARGET_HAS_rot_i64
954 case INDEX_op_rotl_i64:
955 t0 = *tb_ptr++;
956 t1 = tci_read_ri64(&tb_ptr);
957 t2 = tci_read_ri64(&tb_ptr);
958 tci_write_reg64(t0, rol64(t1, t2));
959 break;
960 case INDEX_op_rotr_i64:
961 t0 = *tb_ptr++;
962 t1 = tci_read_ri64(&tb_ptr);
963 t2 = tci_read_ri64(&tb_ptr);
964 tci_write_reg64(t0, ror64(t1, t2));
965 break;
966 #endif
967 #if TCG_TARGET_HAS_deposit_i64
968 case INDEX_op_deposit_i64:
969 t0 = *tb_ptr++;
970 t1 = tci_read_r64(&tb_ptr);
971 t2 = tci_read_r64(&tb_ptr);
972 tmp16 = *tb_ptr++;
973 tmp8 = *tb_ptr++;
974 tmp64 = (((1ULL << tmp8) - 1) << tmp16);
975 tci_write_reg64(t0, (t1 & ~tmp64) | ((t2 << tmp16) & tmp64));
976 break;
977 #endif
978 case INDEX_op_brcond_i64:
979 t0 = tci_read_r64(&tb_ptr);
980 t1 = tci_read_ri64(&tb_ptr);
981 condition = *tb_ptr++;
982 label = tci_read_label(&tb_ptr);
983 if (tci_compare64(t0, t1, condition)) {
984 assert(tb_ptr == old_code_ptr + op_size);
985 tb_ptr = (uint8_t *)label;
986 continue;
987 }
988 break;
989 #if TCG_TARGET_HAS_ext8u_i64
990 case INDEX_op_ext8u_i64:
991 t0 = *tb_ptr++;
992 t1 = tci_read_r8(&tb_ptr);
993 tci_write_reg64(t0, t1);
994 break;
995 #endif
996 #if TCG_TARGET_HAS_ext8s_i64
997 case INDEX_op_ext8s_i64:
998 t0 = *tb_ptr++;
999 t1 = tci_read_r8s(&tb_ptr);
1000 tci_write_reg64(t0, t1);
1001 break;
1002 #endif
1003 #if TCG_TARGET_HAS_ext16s_i64
1004 case INDEX_op_ext16s_i64:
1005 t0 = *tb_ptr++;
1006 t1 = tci_read_r16s(&tb_ptr);
1007 tci_write_reg64(t0, t1);
1008 break;
1009 #endif
1010 #if TCG_TARGET_HAS_ext16u_i64
1011 case INDEX_op_ext16u_i64:
1012 t0 = *tb_ptr++;
1013 t1 = tci_read_r16(&tb_ptr);
1014 tci_write_reg64(t0, t1);
1015 break;
1016 #endif
1017 #if TCG_TARGET_HAS_ext32s_i64
1018 case INDEX_op_ext32s_i64:
1019 t0 = *tb_ptr++;
1020 t1 = tci_read_r32s(&tb_ptr);
1021 tci_write_reg64(t0, t1);
1022 break;
1023 #endif
1024 #if TCG_TARGET_HAS_ext32u_i64
1025 case INDEX_op_ext32u_i64:
1026 t0 = *tb_ptr++;
1027 t1 = tci_read_r32(&tb_ptr);
1028 tci_write_reg64(t0, t1);
1029 break;
1030 #endif
1031 #if TCG_TARGET_HAS_bswap16_i64
1032 case INDEX_op_bswap16_i64:
1033 TODO();
1034 t0 = *tb_ptr++;
1035 t1 = tci_read_r16(&tb_ptr);
1036 tci_write_reg64(t0, bswap16(t1));
1037 break;
1038 #endif
1039 #if TCG_TARGET_HAS_bswap32_i64
1040 case INDEX_op_bswap32_i64:
1041 t0 = *tb_ptr++;
1042 t1 = tci_read_r32(&tb_ptr);
1043 tci_write_reg64(t0, bswap32(t1));
1044 break;
1045 #endif
1046 #if TCG_TARGET_HAS_bswap64_i64
1047 case INDEX_op_bswap64_i64:
1048 t0 = *tb_ptr++;
1049 t1 = tci_read_r64(&tb_ptr);
1050 tci_write_reg64(t0, bswap64(t1));
1051 break;
1052 #endif
1053 #if TCG_TARGET_HAS_not_i64
1054 case INDEX_op_not_i64:
1055 t0 = *tb_ptr++;
1056 t1 = tci_read_r64(&tb_ptr);
1057 tci_write_reg64(t0, ~t1);
1058 break;
1059 #endif
1060 #if TCG_TARGET_HAS_neg_i64
1061 case INDEX_op_neg_i64:
1062 t0 = *tb_ptr++;
1063 t1 = tci_read_r64(&tb_ptr);
1064 tci_write_reg64(t0, -t1);
1065 break;
1066 #endif
1067 #endif /* TCG_TARGET_REG_BITS == 64 */
1068
1069 /* QEMU specific operations. */
1070
1071 #if TARGET_LONG_BITS > TCG_TARGET_REG_BITS
1072 case INDEX_op_debug_insn_start:
1073 TODO();
1074 break;
1075 #else
1076 case INDEX_op_debug_insn_start:
1077 TODO();
1078 break;
1079 #endif
1080 case INDEX_op_exit_tb:
1081 next_tb = *(uint64_t *)tb_ptr;
1082 goto exit;
1083 break;
1084 case INDEX_op_goto_tb:
1085 t0 = tci_read_i32(&tb_ptr);
1086 assert(tb_ptr == old_code_ptr + op_size);
1087 tb_ptr += (int32_t)t0;
1088 continue;
1089 case INDEX_op_qemu_ld8u:
1090 t0 = *tb_ptr++;
1091 taddr = tci_read_ulong(&tb_ptr);
1092 #ifdef CONFIG_SOFTMMU
1093 tmp8 = helper_ldb_mmu(env, taddr, tci_read_i(&tb_ptr));
1094 #else
1095 host_addr = (tcg_target_ulong)taddr;
1096 tmp8 = *(uint8_t *)(host_addr + GUEST_BASE);
1097 #endif
1098 tci_write_reg8(t0, tmp8);
1099 break;
1100 case INDEX_op_qemu_ld8s:
1101 t0 = *tb_ptr++;
1102 taddr = tci_read_ulong(&tb_ptr);
1103 #ifdef CONFIG_SOFTMMU
1104 tmp8 = helper_ldb_mmu(env, taddr, tci_read_i(&tb_ptr));
1105 #else
1106 host_addr = (tcg_target_ulong)taddr;
1107 tmp8 = *(uint8_t *)(host_addr + GUEST_BASE);
1108 #endif
1109 tci_write_reg8s(t0, tmp8);
1110 break;
1111 case INDEX_op_qemu_ld16u:
1112 t0 = *tb_ptr++;
1113 taddr = tci_read_ulong(&tb_ptr);
1114 #ifdef CONFIG_SOFTMMU
1115 tmp16 = helper_ldw_mmu(env, taddr, tci_read_i(&tb_ptr));
1116 #else
1117 host_addr = (tcg_target_ulong)taddr;
1118 tmp16 = tswap16(*(uint16_t *)(host_addr + GUEST_BASE));
1119 #endif
1120 tci_write_reg16(t0, tmp16);
1121 break;
1122 case INDEX_op_qemu_ld16s:
1123 t0 = *tb_ptr++;
1124 taddr = tci_read_ulong(&tb_ptr);
1125 #ifdef CONFIG_SOFTMMU
1126 tmp16 = helper_ldw_mmu(env, taddr, tci_read_i(&tb_ptr));
1127 #else
1128 host_addr = (tcg_target_ulong)taddr;
1129 tmp16 = tswap16(*(uint16_t *)(host_addr + GUEST_BASE));
1130 #endif
1131 tci_write_reg16s(t0, tmp16);
1132 break;
1133 #if TCG_TARGET_REG_BITS == 64
1134 case INDEX_op_qemu_ld32u:
1135 t0 = *tb_ptr++;
1136 taddr = tci_read_ulong(&tb_ptr);
1137 #ifdef CONFIG_SOFTMMU
1138 tmp32 = helper_ldl_mmu(env, taddr, tci_read_i(&tb_ptr));
1139 #else
1140 host_addr = (tcg_target_ulong)taddr;
1141 tmp32 = tswap32(*(uint32_t *)(host_addr + GUEST_BASE));
1142 #endif
1143 tci_write_reg32(t0, tmp32);
1144 break;
1145 case INDEX_op_qemu_ld32s:
1146 t0 = *tb_ptr++;
1147 taddr = tci_read_ulong(&tb_ptr);
1148 #ifdef CONFIG_SOFTMMU
1149 tmp32 = helper_ldl_mmu(env, taddr, tci_read_i(&tb_ptr));
1150 #else
1151 host_addr = (tcg_target_ulong)taddr;
1152 tmp32 = tswap32(*(uint32_t *)(host_addr + GUEST_BASE));
1153 #endif
1154 tci_write_reg32s(t0, tmp32);
1155 break;
1156 #endif /* TCG_TARGET_REG_BITS == 64 */
1157 case INDEX_op_qemu_ld32:
1158 t0 = *tb_ptr++;
1159 taddr = tci_read_ulong(&tb_ptr);
1160 #ifdef CONFIG_SOFTMMU
1161 tmp32 = helper_ldl_mmu(env, taddr, tci_read_i(&tb_ptr));
1162 #else
1163 host_addr = (tcg_target_ulong)taddr;
1164 tmp32 = tswap32(*(uint32_t *)(host_addr + GUEST_BASE));
1165 #endif
1166 tci_write_reg32(t0, tmp32);
1167 break;
1168 case INDEX_op_qemu_ld64:
1169 t0 = *tb_ptr++;
1170 #if TCG_TARGET_REG_BITS == 32
1171 t1 = *tb_ptr++;
1172 #endif
1173 taddr = tci_read_ulong(&tb_ptr);
1174 #ifdef CONFIG_SOFTMMU
1175 tmp64 = helper_ldq_mmu(env, taddr, tci_read_i(&tb_ptr));
1176 #else
1177 host_addr = (tcg_target_ulong)taddr;
1178 tmp64 = tswap64(*(uint64_t *)(host_addr + GUEST_BASE));
1179 #endif
1180 tci_write_reg(t0, tmp64);
1181 #if TCG_TARGET_REG_BITS == 32
1182 tci_write_reg(t1, tmp64 >> 32);
1183 #endif
1184 break;
1185 case INDEX_op_qemu_st8:
1186 t0 = tci_read_r8(&tb_ptr);
1187 taddr = tci_read_ulong(&tb_ptr);
1188 #ifdef CONFIG_SOFTMMU
1189 t2 = tci_read_i(&tb_ptr);
1190 helper_stb_mmu(env, taddr, t0, t2);
1191 #else
1192 host_addr = (tcg_target_ulong)taddr;
1193 *(uint8_t *)(host_addr + GUEST_BASE) = t0;
1194 #endif
1195 break;
1196 case INDEX_op_qemu_st16:
1197 t0 = tci_read_r16(&tb_ptr);
1198 taddr = tci_read_ulong(&tb_ptr);
1199 #ifdef CONFIG_SOFTMMU
1200 t2 = tci_read_i(&tb_ptr);
1201 helper_stw_mmu(env, taddr, t0, t2);
1202 #else
1203 host_addr = (tcg_target_ulong)taddr;
1204 *(uint16_t *)(host_addr + GUEST_BASE) = tswap16(t0);
1205 #endif
1206 break;
1207 case INDEX_op_qemu_st32:
1208 t0 = tci_read_r32(&tb_ptr);
1209 taddr = tci_read_ulong(&tb_ptr);
1210 #ifdef CONFIG_SOFTMMU
1211 t2 = tci_read_i(&tb_ptr);
1212 helper_stl_mmu(env, taddr, t0, t2);
1213 #else
1214 host_addr = (tcg_target_ulong)taddr;
1215 *(uint32_t *)(host_addr + GUEST_BASE) = tswap32(t0);
1216 #endif
1217 break;
1218 case INDEX_op_qemu_st64:
1219 tmp64 = tci_read_r64(&tb_ptr);
1220 taddr = tci_read_ulong(&tb_ptr);
1221 #ifdef CONFIG_SOFTMMU
1222 t2 = tci_read_i(&tb_ptr);
1223 helper_stq_mmu(env, taddr, tmp64, t2);
1224 #else
1225 host_addr = (tcg_target_ulong)taddr;
1226 *(uint64_t *)(host_addr + GUEST_BASE) = tswap64(tmp64);
1227 #endif
1228 break;
1229 default:
1230 TODO();
1231 break;
1232 }
1233 assert(tb_ptr == old_code_ptr + op_size);
1234 }
1235 exit:
1236 return next_tb;
1237 }
Ray Wang's QEMU Repository