1 /*
2 * Tiny Code Generator for QEMU
3 *
4 * Copyright (c) 2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 #define TCG_CT_CONST_U32 0x100
26
27 static uint8_t *tb_ret_addr;
28
29 #define FAST_PATH
30
31 #if TARGET_LONG_BITS == 32
32 #define LD_ADDR LWZU
33 #define CMP_L 0
34 #else
35 #define LD_ADDR LDU
36 #define CMP_L (1<<21)
37 #endif
38
39 #ifndef GUEST_BASE
40 #define GUEST_BASE 0
41 #endif
42
43 #ifdef CONFIG_USE_GUEST_BASE
44 #define TCG_GUEST_BASE_REG 30
45 #else
46 #define TCG_GUEST_BASE_REG 0
47 #endif
48
49 #ifndef NDEBUG
50 static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
51 "r0",
52 "r1",
53 "r2",
54 "r3",
55 "r4",
56 "r5",
57 "r6",
58 "r7",
59 "r8",
60 "r9",
61 "r10",
62 "r11",
63 "r12",
64 "r13",
65 "r14",
66 "r15",
67 "r16",
68 "r17",
69 "r18",
70 "r19",
71 "r20",
72 "r21",
73 "r22",
74 "r23",
75 "r24",
76 "r25",
77 "r26",
78 "r27",
79 "r28",
80 "r29",
81 "r30",
82 "r31"
83 };
84 #endif
85
86 static const int tcg_target_reg_alloc_order[] = {
87 TCG_REG_R14,
88 TCG_REG_R15,
89 TCG_REG_R16,
90 TCG_REG_R17,
91 TCG_REG_R18,
92 TCG_REG_R19,
93 TCG_REG_R20,
94 TCG_REG_R21,
95 TCG_REG_R22,
96 TCG_REG_R23,
97 TCG_REG_R28,
98 TCG_REG_R29,
99 TCG_REG_R30,
100 TCG_REG_R31,
101 #ifdef __APPLE__
102 TCG_REG_R2,
103 #endif
104 TCG_REG_R3,
105 TCG_REG_R4,
106 TCG_REG_R5,
107 TCG_REG_R6,
108 TCG_REG_R7,
109 TCG_REG_R8,
110 TCG_REG_R9,
111 TCG_REG_R10,
112 #ifndef __APPLE__
113 TCG_REG_R11,
114 #endif
115 TCG_REG_R12,
116 TCG_REG_R24,
117 TCG_REG_R25,
118 TCG_REG_R26,
119 TCG_REG_R27
120 };
121
122 static const int tcg_target_call_iarg_regs[] = {
123 TCG_REG_R3,
124 TCG_REG_R4,
125 TCG_REG_R5,
126 TCG_REG_R6,
127 TCG_REG_R7,
128 TCG_REG_R8,
129 TCG_REG_R9,
130 TCG_REG_R10
131 };
132
133 static const int tcg_target_call_oarg_regs[2] = {
134 TCG_REG_R3
135 };
136
137 static const int tcg_target_callee_save_regs[] = {
138 #ifdef __APPLE__
139 TCG_REG_R11,
140 #endif
141 TCG_REG_R14,
142 TCG_REG_R15,
143 TCG_REG_R16,
144 TCG_REG_R17,
145 TCG_REG_R18,
146 TCG_REG_R19,
147 TCG_REG_R20,
148 TCG_REG_R21,
149 TCG_REG_R22,
150 TCG_REG_R23,
151 TCG_REG_R24,
152 TCG_REG_R25,
153 TCG_REG_R26,
154 /* TCG_REG_R27, */ /* currently used for the global env, so no
155 need to save */
156 TCG_REG_R28,
157 TCG_REG_R29,
158 TCG_REG_R30,
159 TCG_REG_R31
160 };
161
reloc_pc24_val(void * pc,tcg_target_long target)162 static uint32_t reloc_pc24_val (void *pc, tcg_target_long target)
163 {
164 tcg_target_long disp;
165
166 disp = target - (tcg_target_long) pc;
167 if ((disp << 38) >> 38 != disp)
168 tcg_abort ();
169
170 return disp & 0x3fffffc;
171 }
172
reloc_pc24(void * pc,tcg_target_long target)173 static void reloc_pc24 (void *pc, tcg_target_long target)
174 {
175 *(uint32_t *) pc = (*(uint32_t *) pc & ~0x3fffffc)
176 | reloc_pc24_val (pc, target);
177 }
178
reloc_pc14_val(void * pc,tcg_target_long target)179 static uint16_t reloc_pc14_val (void *pc, tcg_target_long target)
180 {
181 tcg_target_long disp;
182
183 disp = target - (tcg_target_long) pc;
184 if (disp != (int16_t) disp)
185 tcg_abort ();
186
187 return disp & 0xfffc;
188 }
189
reloc_pc14(void * pc,tcg_target_long target)190 static void reloc_pc14 (void *pc, tcg_target_long target)
191 {
192 *(uint32_t *) pc = (*(uint32_t *) pc & ~0xfffc)
193 | reloc_pc14_val (pc, target);
194 }
195
patch_reloc(uint8_t * code_ptr,int type,tcg_target_long value,tcg_target_long addend)196 static void patch_reloc (uint8_t *code_ptr, int type,
197 tcg_target_long value, tcg_target_long addend)
198 {
199 value += addend;
200 switch (type) {
201 case R_PPC_REL14:
202 reloc_pc14 (code_ptr, value);
203 break;
204 case R_PPC_REL24:
205 reloc_pc24 (code_ptr, value);
206 break;
207 default:
208 tcg_abort ();
209 }
210 }
211
212 /* maximum number of register used for input function arguments */
tcg_target_get_call_iarg_regs_count(int flags)213 static int tcg_target_get_call_iarg_regs_count (int flags)
214 {
215 return ARRAY_SIZE (tcg_target_call_iarg_regs);
216 }
217
218 /* parse target specific constraints */
target_parse_constraint(TCGArgConstraint * ct,const char ** pct_str)219 static int target_parse_constraint (TCGArgConstraint *ct, const char **pct_str)
220 {
221 const char *ct_str;
222
223 ct_str = *pct_str;
224 switch (ct_str[0]) {
225 case 'A': case 'B': case 'C': case 'D':
226 ct->ct |= TCG_CT_REG;
227 tcg_regset_set_reg (ct->u.regs, 3 + ct_str[0] - 'A');
228 break;
229 case 'r':
230 ct->ct |= TCG_CT_REG;
231 tcg_regset_set32 (ct->u.regs, 0, 0xffffffff);
232 break;
233 case 'L': /* qemu_ld constraint */
234 ct->ct |= TCG_CT_REG;
235 tcg_regset_set32 (ct->u.regs, 0, 0xffffffff);
236 tcg_regset_reset_reg (ct->u.regs, TCG_REG_R3);
237 #ifdef CONFIG_SOFTMMU
238 tcg_regset_reset_reg (ct->u.regs, TCG_REG_R4);
239 #endif
240 break;
241 case 'S': /* qemu_st constraint */
242 ct->ct |= TCG_CT_REG;
243 tcg_regset_set32 (ct->u.regs, 0, 0xffffffff);
244 tcg_regset_reset_reg (ct->u.regs, TCG_REG_R3);
245 #ifdef CONFIG_SOFTMMU
246 tcg_regset_reset_reg (ct->u.regs, TCG_REG_R4);
247 tcg_regset_reset_reg (ct->u.regs, TCG_REG_R5);
248 #endif
249 break;
250 case 'Z':
251 ct->ct |= TCG_CT_CONST_U32;
252 break;
253 default:
254 return -1;
255 }
256 ct_str++;
257 *pct_str = ct_str;
258 return 0;
259 }
260
261 /* test if a constant matches the constraint */
tcg_target_const_match(tcg_target_long val,const TCGArgConstraint * arg_ct)262 static int tcg_target_const_match (tcg_target_long val,
263 const TCGArgConstraint *arg_ct)
264 {
265 int ct;
266
267 ct = arg_ct->ct;
268 if (ct & TCG_CT_CONST)
269 return 1;
270 else if ((ct & TCG_CT_CONST_U32) && (val == (uint32_t) val))
271 return 1;
272 return 0;
273 }
274
275 #define OPCD(opc) ((opc)<<26)
276 #define XO19(opc) (OPCD(19)|((opc)<<1))
277 #define XO30(opc) (OPCD(30)|((opc)<<2))
278 #define XO31(opc) (OPCD(31)|((opc)<<1))
279 #define XO58(opc) (OPCD(58)|(opc))
280 #define XO62(opc) (OPCD(62)|(opc))
281
282 #define B OPCD( 18)
283 #define BC OPCD( 16)
284 #define LBZ OPCD( 34)
285 #define LHZ OPCD( 40)
286 #define LHA OPCD( 42)
287 #define LWZ OPCD( 32)
288 #define STB OPCD( 38)
289 #define STH OPCD( 44)
290 #define STW OPCD( 36)
291
292 #define STD XO62( 0)
293 #define STDU XO62( 1)
294 #define STDX XO31(149)
295
296 #define LD XO58( 0)
297 #define LDX XO31( 21)
298 #define LDU XO58( 1)
299 #define LWA XO58( 2)
300 #define LWAX XO31(341)
301
302 #define ADDIC OPCD( 12)
303 #define ADDI OPCD( 14)
304 #define ADDIS OPCD( 15)
305 #define ORI OPCD( 24)
306 #define ORIS OPCD( 25)
307 #define XORI OPCD( 26)
308 #define XORIS OPCD( 27)
309 #define ANDI OPCD( 28)
310 #define ANDIS OPCD( 29)
311 #define MULLI OPCD( 7)
312 #define CMPLI OPCD( 10)
313 #define CMPI OPCD( 11)
314
315 #define LWZU OPCD( 33)
316 #define STWU OPCD( 37)
317
318 #define RLWINM OPCD( 21)
319
320 #define RLDICL XO30( 0)
321 #define RLDICR XO30( 1)
322 #define RLDIMI XO30( 3)
323
324 #define BCLR XO19( 16)
325 #define BCCTR XO19(528)
326 #define CRAND XO19(257)
327 #define CRANDC XO19(129)
328 #define CRNAND XO19(225)
329 #define CROR XO19(449)
330 #define CRNOR XO19( 33)
331
332 #define EXTSB XO31(954)
333 #define EXTSH XO31(922)
334 #define EXTSW XO31(986)
335 #define ADD XO31(266)
336 #define ADDE XO31(138)
337 #define ADDC XO31( 10)
338 #define AND XO31( 28)
339 #define SUBF XO31( 40)
340 #define SUBFC XO31( 8)
341 #define SUBFE XO31(136)
342 #define OR XO31(444)
343 #define XOR XO31(316)
344 #define MULLW XO31(235)
345 #define MULHWU XO31( 11)
346 #define DIVW XO31(491)
347 #define DIVWU XO31(459)
348 #define CMP XO31( 0)
349 #define CMPL XO31( 32)
350 #define LHBRX XO31(790)
351 #define LWBRX XO31(534)
352 #define STHBRX XO31(918)
353 #define STWBRX XO31(662)
354 #define MFSPR XO31(339)
355 #define MTSPR XO31(467)
356 #define SRAWI XO31(824)
357 #define NEG XO31(104)
358 #define MFCR XO31( 19)
359 #define CNTLZW XO31( 26)
360 #define CNTLZD XO31( 58)
361
362 #define MULLD XO31(233)
363 #define MULHD XO31( 73)
364 #define MULHDU XO31( 9)
365 #define DIVD XO31(489)
366 #define DIVDU XO31(457)
367
368 #define LBZX XO31( 87)
369 #define LHZX XO31(279)
370 #define LHAX XO31(343)
371 #define LWZX XO31( 23)
372 #define STBX XO31(215)
373 #define STHX XO31(407)
374 #define STWX XO31(151)
375
376 #define SPR(a,b) ((((a)<<5)|(b))<<11)
377 #define LR SPR(8, 0)
378 #define CTR SPR(9, 0)
379
380 #define SLW XO31( 24)
381 #define SRW XO31(536)
382 #define SRAW XO31(792)
383
384 #define SLD XO31( 27)
385 #define SRD XO31(539)
386 #define SRAD XO31(794)
387 #define SRADI XO31(413<<1)
388
389 #define TW XO31( 4)
390 #define TRAP (TW | TO (31))
391
392 #define RT(r) ((r)<<21)
393 #define RS(r) ((r)<<21)
394 #define RA(r) ((r)<<16)
395 #define RB(r) ((r)<<11)
396 #define TO(t) ((t)<<21)
397 #define SH(s) ((s)<<11)
398 #define MB(b) ((b)<<6)
399 #define ME(e) ((e)<<1)
400 #define BO(o) ((o)<<21)
401 #define MB64(b) ((b)<<5)
402
403 #define LK 1
404
405 #define TAB(t,a,b) (RT(t) | RA(a) | RB(b))
406 #define SAB(s,a,b) (RS(s) | RA(a) | RB(b))
407
408 #define BF(n) ((n)<<23)
409 #define BI(n, c) (((c)+((n)*4))<<16)
410 #define BT(n, c) (((c)+((n)*4))<<21)
411 #define BA(n, c) (((c)+((n)*4))<<16)
412 #define BB(n, c) (((c)+((n)*4))<<11)
413
414 #define BO_COND_TRUE BO (12)
415 #define BO_COND_FALSE BO ( 4)
416 #define BO_ALWAYS BO (20)
417
418 enum {
419 CR_LT,
420 CR_GT,
421 CR_EQ,
422 CR_SO
423 };
424
425 static const uint32_t tcg_to_bc[10] = {
426 [TCG_COND_EQ] = BC | BI (7, CR_EQ) | BO_COND_TRUE,
427 [TCG_COND_NE] = BC | BI (7, CR_EQ) | BO_COND_FALSE,
428 [TCG_COND_LT] = BC | BI (7, CR_LT) | BO_COND_TRUE,
429 [TCG_COND_GE] = BC | BI (7, CR_LT) | BO_COND_FALSE,
430 [TCG_COND_LE] = BC | BI (7, CR_GT) | BO_COND_FALSE,
431 [TCG_COND_GT] = BC | BI (7, CR_GT) | BO_COND_TRUE,
432 [TCG_COND_LTU] = BC | BI (7, CR_LT) | BO_COND_TRUE,
433 [TCG_COND_GEU] = BC | BI (7, CR_LT) | BO_COND_FALSE,
434 [TCG_COND_LEU] = BC | BI (7, CR_GT) | BO_COND_FALSE,
435 [TCG_COND_GTU] = BC | BI (7, CR_GT) | BO_COND_TRUE,
436 };
437
tcg_out_mov(TCGContext * s,TCGType type,int ret,int arg)438 static void tcg_out_mov (TCGContext *s, TCGType type, int ret, int arg)
439 {
440 tcg_out32 (s, OR | SAB (arg, ret, arg));
441 }
442
tcg_out_rld(TCGContext * s,int op,int ra,int rs,int sh,int mb)443 static void tcg_out_rld (TCGContext *s, int op, int ra, int rs, int sh, int mb)
444 {
445 sh = SH (sh & 0x1f) | (((sh >> 5) & 1) << 1);
446 mb = MB64 ((mb >> 5) | ((mb << 1) & 0x3f));
447 tcg_out32 (s, op | RA (ra) | RS (rs) | sh | mb);
448 }
449
tcg_out_movi32(TCGContext * s,int ret,int32_t arg)450 static void tcg_out_movi32 (TCGContext *s, int ret, int32_t arg)
451 {
452 if (arg == (int16_t) arg)
453 tcg_out32 (s, ADDI | RT (ret) | RA (0) | (arg & 0xffff));
454 else {
455 tcg_out32 (s, ADDIS | RT (ret) | RA (0) | ((arg >> 16) & 0xffff));
456 if (arg & 0xffff)
457 tcg_out32 (s, ORI | RS (ret) | RA (ret) | (arg & 0xffff));
458 }
459 }
460
tcg_out_movi(TCGContext * s,TCGType type,int ret,tcg_target_long arg)461 static void tcg_out_movi (TCGContext *s, TCGType type,
462 int ret, tcg_target_long arg)
463 {
464 int32_t arg32 = arg;
465 arg = type == TCG_TYPE_I32 ? arg & 0xffffffff : arg;
466
467 if (arg == arg32) {
468 tcg_out_movi32 (s, ret, arg32);
469 }
470 else {
471 if ((uint64_t) arg >> 32) {
472 uint16_t h16 = arg >> 16;
473 uint16_t l16 = arg;
474
475 tcg_out_movi32 (s, ret, arg >> 32);
476 tcg_out_rld (s, RLDICR, ret, ret, 32, 31);
477 if (h16) tcg_out32 (s, ORIS | RS (ret) | RA (ret) | h16);
478 if (l16) tcg_out32 (s, ORI | RS (ret) | RA (ret) | l16);
479 }
480 else {
481 tcg_out_movi32 (s, ret, arg32);
482 if (arg32 < 0)
483 tcg_out_rld (s, RLDICL, ret, ret, 0, 32);
484 }
485 }
486 }
487
tcg_out_b(TCGContext * s,int mask,tcg_target_long target)488 static void tcg_out_b (TCGContext *s, int mask, tcg_target_long target)
489 {
490 tcg_target_long disp;
491
492 disp = target - (tcg_target_long) s->code_ptr;
493 if ((disp << 38) >> 38 == disp)
494 tcg_out32 (s, B | (disp & 0x3fffffc) | mask);
495 else {
496 tcg_out_movi (s, TCG_TYPE_I64, 0, (tcg_target_long) target);
497 tcg_out32 (s, MTSPR | RS (0) | CTR);
498 tcg_out32 (s, BCCTR | BO_ALWAYS | mask);
499 }
500 }
501
tcg_out_call(TCGContext * s,tcg_target_long arg,int const_arg)502 static void tcg_out_call (TCGContext *s, tcg_target_long arg, int const_arg)
503 {
504 #ifdef __APPLE__
505 if (const_arg) {
506 tcg_out_b (s, LK, arg);
507 }
508 else {
509 tcg_out32 (s, MTSPR | RS (arg) | LR);
510 tcg_out32 (s, BCLR | BO_ALWAYS | LK);
511 }
512 #else
513 int reg;
514
515 if (const_arg) {
516 reg = 2;
517 tcg_out_movi (s, TCG_TYPE_I64, reg, arg);
518 }
519 else reg = arg;
520
521 tcg_out32 (s, LD | RT (0) | RA (reg));
522 tcg_out32 (s, MTSPR | RA (0) | CTR);
523 tcg_out32 (s, LD | RT (11) | RA (reg) | 16);
524 tcg_out32 (s, LD | RT (2) | RA (reg) | 8);
525 tcg_out32 (s, BCCTR | BO_ALWAYS | LK);
526 #endif
527 }
528
tcg_out_ldst(TCGContext * s,int ret,int addr,int offset,int op1,int op2)529 static void tcg_out_ldst (TCGContext *s, int ret, int addr,
530 int offset, int op1, int op2)
531 {
532 if (offset == (int16_t) offset)
533 tcg_out32 (s, op1 | RT (ret) | RA (addr) | (offset & 0xffff));
534 else {
535 tcg_out_movi (s, TCG_TYPE_I64, 0, offset);
536 tcg_out32 (s, op2 | RT (ret) | RA (addr) | RB (0));
537 }
538 }
539
tcg_out_ldsta(TCGContext * s,int ret,int addr,int offset,int op1,int op2)540 static void tcg_out_ldsta (TCGContext *s, int ret, int addr,
541 int offset, int op1, int op2)
542 {
543 if (offset == (int16_t) (offset & ~3))
544 tcg_out32 (s, op1 | RT (ret) | RA (addr) | (offset & 0xffff));
545 else {
546 tcg_out_movi (s, TCG_TYPE_I64, 0, offset);
547 tcg_out32 (s, op2 | RT (ret) | RA (addr) | RB (0));
548 }
549 }
550
551 #if defined (CONFIG_SOFTMMU)
552
553 #include "../../softmmu_defs.h"
554
555 static void *qemu_ld_helpers[4] = {
556 __ldb_mmu,
557 __ldw_mmu,
558 __ldl_mmu,
559 __ldq_mmu,
560 };
561
562 static void *qemu_st_helpers[4] = {
563 __stb_mmu,
564 __stw_mmu,
565 __stl_mmu,
566 __stq_mmu,
567 };
568
tcg_out_tlb_read(TCGContext * s,int r0,int r1,int r2,int addr_reg,int s_bits,int offset)569 static void tcg_out_tlb_read (TCGContext *s, int r0, int r1, int r2,
570 int addr_reg, int s_bits, int offset)
571 {
572 #if TARGET_LONG_BITS == 32
573 tcg_out_rld (s, RLDICL, addr_reg, addr_reg, 0, 32);
574
575 tcg_out32 (s, (RLWINM
576 | RA (r0)
577 | RS (addr_reg)
578 | SH (32 - (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS))
579 | MB (32 - (CPU_TLB_BITS + CPU_TLB_ENTRY_BITS))
580 | ME (31 - CPU_TLB_ENTRY_BITS)
581 )
582 );
583 tcg_out32 (s, ADD | RT (r0) | RA (r0) | RB (TCG_AREG0));
584 tcg_out32 (s, (LWZU | RT (r1) | RA (r0) | offset));
585 tcg_out32 (s, (RLWINM
586 | RA (r2)
587 | RS (addr_reg)
588 | SH (0)
589 | MB ((32 - s_bits) & 31)
590 | ME (31 - TARGET_PAGE_BITS)
591 )
592 );
593 #else
594 tcg_out_rld (s, RLDICL, r0, addr_reg,
595 64 - TARGET_PAGE_BITS,
596 64 - CPU_TLB_BITS);
597 tcg_out_rld (s, RLDICR, r0, r0,
598 CPU_TLB_ENTRY_BITS,
599 63 - CPU_TLB_ENTRY_BITS);
600
601 tcg_out32 (s, ADD | TAB (r0, r0, TCG_AREG0));
602 tcg_out32 (s, LD_ADDR | RT (r1) | RA (r0) | offset);
603
604 if (!s_bits) {
605 tcg_out_rld (s, RLDICR, r2, addr_reg, 0, 63 - TARGET_PAGE_BITS);
606 }
607 else {
608 tcg_out_rld (s, RLDICL, r2, addr_reg,
609 64 - TARGET_PAGE_BITS,
610 TARGET_PAGE_BITS - s_bits);
611 tcg_out_rld (s, RLDICL, r2, r2, TARGET_PAGE_BITS, 0);
612 }
613 #endif
614 }
615 #endif
616
tcg_out_qemu_ld(TCGContext * s,const TCGArg * args,int opc)617 static void tcg_out_qemu_ld (TCGContext *s, const TCGArg *args, int opc)
618 {
619 int addr_reg, data_reg, r0, r1, rbase, mem_index, s_bits, bswap;
620 #ifdef CONFIG_SOFTMMU
621 int r2;
622 void *label1_ptr, *label2_ptr;
623 #endif
624
625 data_reg = *args++;
626 addr_reg = *args++;
627 mem_index = *args;
628 s_bits = opc & 3;
629
630 #ifdef CONFIG_SOFTMMU
631 r0 = 3;
632 r1 = 4;
633 r2 = 0;
634 rbase = 0;
635
636 tcg_out_tlb_read (s, r0, r1, r2, addr_reg, s_bits,
637 offsetof (CPUState, tlb_table[mem_index][0].addr_read));
638
639 tcg_out32 (s, CMP | BF (7) | RA (r2) | RB (r1) | CMP_L);
640
641 label1_ptr = s->code_ptr;
642 #ifdef FAST_PATH
643 tcg_out32 (s, BC | BI (7, CR_EQ) | BO_COND_TRUE);
644 #endif
645
646 /* slow path */
647 tcg_out_mov (s, TCG_TYPE_I64, 3, addr_reg);
648 tcg_out_movi (s, TCG_TYPE_I64, 4, mem_index);
649
650 tcg_out_call (s, (tcg_target_long) qemu_ld_helpers[s_bits], 1);
651
652 switch (opc) {
653 case 0|4:
654 tcg_out32 (s, EXTSB | RA (data_reg) | RS (3));
655 break;
656 case 1|4:
657 tcg_out32 (s, EXTSH | RA (data_reg) | RS (3));
658 break;
659 case 2|4:
660 tcg_out32 (s, EXTSW | RA (data_reg) | RS (3));
661 break;
662 case 0:
663 case 1:
664 case 2:
665 case 3:
666 if (data_reg != 3)
667 tcg_out_mov (s, TCG_TYPE_I64, data_reg, 3);
668 break;
669 }
670 label2_ptr = s->code_ptr;
671 tcg_out32 (s, B);
672
673 /* label1: fast path */
674 #ifdef FAST_PATH
675 reloc_pc14 (label1_ptr, (tcg_target_long) s->code_ptr);
676 #endif
677
678 /* r0 now contains &env->tlb_table[mem_index][index].addr_read */
679 tcg_out32 (s, (LD
680 | RT (r0)
681 | RA (r0)
682 | (offsetof (CPUTLBEntry, addend)
683 - offsetof (CPUTLBEntry, addr_read))
684 ));
685 /* r0 = env->tlb_table[mem_index][index].addend */
686 tcg_out32 (s, ADD | RT (r0) | RA (r0) | RB (addr_reg));
687 /* r0 = env->tlb_table[mem_index][index].addend + addr */
688
689 #else /* !CONFIG_SOFTMMU */
690 #if TARGET_LONG_BITS == 32
691 tcg_out_rld (s, RLDICL, addr_reg, addr_reg, 0, 32);
692 #endif
693 r0 = addr_reg;
694 r1 = 3;
695 rbase = GUEST_BASE ? TCG_GUEST_BASE_REG : 0;
696 #endif
697
698 #ifdef TARGET_WORDS_BIGENDIAN
699 bswap = 0;
700 #else
701 bswap = 1;
702 #endif
703 switch (opc) {
704 default:
705 case 0:
706 tcg_out32 (s, LBZX | TAB (data_reg, rbase, r0));
707 break;
708 case 0|4:
709 tcg_out32 (s, LBZX | TAB (data_reg, rbase, r0));
710 tcg_out32 (s, EXTSB | RA (data_reg) | RS (data_reg));
711 break;
712 case 1:
713 if (bswap)
714 tcg_out32 (s, LHBRX | TAB (data_reg, rbase, r0));
715 else
716 tcg_out32 (s, LHZX | TAB (data_reg, rbase, r0));
717 break;
718 case 1|4:
719 if (bswap) {
720 tcg_out32 (s, LHBRX | TAB (data_reg, rbase, r0));
721 tcg_out32 (s, EXTSH | RA (data_reg) | RS (data_reg));
722 }
723 else tcg_out32 (s, LHAX | TAB (data_reg, rbase, r0));
724 break;
725 case 2:
726 if (bswap)
727 tcg_out32 (s, LWBRX | TAB (data_reg, rbase, r0));
728 else
729 tcg_out32 (s, LWZX | TAB (data_reg, rbase, r0));
730 break;
731 case 2|4:
732 if (bswap) {
733 tcg_out32 (s, LWBRX | TAB (data_reg, rbase, r0));
734 tcg_out32 (s, EXTSW | RA (data_reg) | RS (data_reg));
735 }
736 else tcg_out32 (s, LWAX | TAB (data_reg, rbase, r0));
737 break;
738 case 3:
739 #ifdef CONFIG_USE_GUEST_BASE
740 if (bswap) {
741 tcg_out32 (s, ADDI | RT (r1) | RA (r0) | 4);
742 tcg_out32 (s, LWBRX | TAB (data_reg, rbase, r0));
743 tcg_out32 (s, LWBRX | TAB ( r1, rbase, r1));
744 tcg_out_rld (s, RLDIMI, data_reg, r1, 32, 0);
745 }
746 else tcg_out32 (s, LDX | TAB (data_reg, rbase, r0));
747 #else
748 if (bswap) {
749 tcg_out_movi32 (s, 0, 4);
750 tcg_out32 (s, LWBRX | RT (data_reg) | RB (r0));
751 tcg_out32 (s, LWBRX | RT ( r1) | RA (r0));
752 tcg_out_rld (s, RLDIMI, data_reg, r1, 32, 0);
753 }
754 else tcg_out32 (s, LD | RT (data_reg) | RA (r0));
755 #endif
756 break;
757 }
758
759 #ifdef CONFIG_SOFTMMU
760 reloc_pc24 (label2_ptr, (tcg_target_long) s->code_ptr);
761 #endif
762 }
763
tcg_out_qemu_st(TCGContext * s,const TCGArg * args,int opc)764 static void tcg_out_qemu_st (TCGContext *s, const TCGArg *args, int opc)
765 {
766 int addr_reg, r0, r1, rbase, data_reg, mem_index, bswap;
767 #ifdef CONFIG_SOFTMMU
768 int r2;
769 void *label1_ptr, *label2_ptr;
770 #endif
771
772 data_reg = *args++;
773 addr_reg = *args++;
774 mem_index = *args;
775
776 #ifdef CONFIG_SOFTMMU
777 r0 = 3;
778 r1 = 4;
779 r2 = 0;
780 rbase = 0;
781
782 tcg_out_tlb_read (s, r0, r1, r2, addr_reg, opc,
783 offsetof (CPUState, tlb_table[mem_index][0].addr_write));
784
785 tcg_out32 (s, CMP | BF (7) | RA (r2) | RB (r1) | CMP_L);
786
787 label1_ptr = s->code_ptr;
788 #ifdef FAST_PATH
789 tcg_out32 (s, BC | BI (7, CR_EQ) | BO_COND_TRUE);
790 #endif
791
792 /* slow path */
793 tcg_out_mov (s, TCG_TYPE_I64, 3, addr_reg);
794 tcg_out_rld (s, RLDICL, 4, data_reg, 0, 64 - (1 << (3 + opc)));
795 tcg_out_movi (s, TCG_TYPE_I64, 5, mem_index);
796
797 tcg_out_call (s, (tcg_target_long) qemu_st_helpers[opc], 1);
798
799 label2_ptr = s->code_ptr;
800 tcg_out32 (s, B);
801
802 /* label1: fast path */
803 #ifdef FAST_PATH
804 reloc_pc14 (label1_ptr, (tcg_target_long) s->code_ptr);
805 #endif
806
807 tcg_out32 (s, (LD
808 | RT (r0)
809 | RA (r0)
810 | (offsetof (CPUTLBEntry, addend)
811 - offsetof (CPUTLBEntry, addr_write))
812 ));
813 /* r0 = env->tlb_table[mem_index][index].addend */
814 tcg_out32 (s, ADD | RT (r0) | RA (r0) | RB (addr_reg));
815 /* r0 = env->tlb_table[mem_index][index].addend + addr */
816
817 #else /* !CONFIG_SOFTMMU */
818 #if TARGET_LONG_BITS == 32
819 tcg_out_rld (s, RLDICL, addr_reg, addr_reg, 0, 32);
820 #endif
821 r1 = 3;
822 r0 = addr_reg;
823 rbase = GUEST_BASE ? TCG_GUEST_BASE_REG : 0;
824 #endif
825
826 #ifdef TARGET_WORDS_BIGENDIAN
827 bswap = 0;
828 #else
829 bswap = 1;
830 #endif
831 switch (opc) {
832 case 0:
833 tcg_out32 (s, STBX | SAB (data_reg, rbase, r0));
834 break;
835 case 1:
836 if (bswap)
837 tcg_out32 (s, STHBRX | SAB (data_reg, rbase, r0));
838 else
839 tcg_out32 (s, STHX | SAB (data_reg, rbase, r0));
840 break;
841 case 2:
842 if (bswap)
843 tcg_out32 (s, STWBRX | SAB (data_reg, rbase, r0));
844 else
845 tcg_out32 (s, STWX | SAB (data_reg, rbase, r0));
846 break;
847 case 3:
848 if (bswap) {
849 tcg_out32 (s, STWBRX | SAB (data_reg, rbase, r0));
850 tcg_out32 (s, ADDI | RT (r1) | RA (r0) | 4);
851 tcg_out_rld (s, RLDICL, 0, data_reg, 32, 0);
852 tcg_out32 (s, STWBRX | SAB (0, rbase, r1));
853 }
854 else tcg_out32 (s, STDX | SAB (data_reg, rbase, r0));
855 break;
856 }
857
858 #ifdef CONFIG_SOFTMMU
859 reloc_pc24 (label2_ptr, (tcg_target_long) s->code_ptr);
860 #endif
861 }
862
tcg_target_qemu_prologue(TCGContext * s)863 static void tcg_target_qemu_prologue (TCGContext *s)
864 {
865 int i, frame_size;
866 #ifndef __APPLE__
867 uint64_t addr;
868 #endif
869
870 frame_size = 0
871 + 8 /* back chain */
872 + 8 /* CR */
873 + 8 /* LR */
874 + 8 /* compiler doubleword */
875 + 8 /* link editor doubleword */
876 + 8 /* TOC save area */
877 + TCG_STATIC_CALL_ARGS_SIZE
878 + ARRAY_SIZE (tcg_target_callee_save_regs) * 8
879 ;
880 frame_size = (frame_size + 15) & ~15;
881
882 #ifndef __APPLE__
883 /* First emit adhoc function descriptor */
884 addr = (uint64_t) s->code_ptr + 24;
885 tcg_out32 (s, addr >> 32); tcg_out32 (s, addr); /* entry point */
886 s->code_ptr += 16; /* skip TOC and environment pointer */
887 #endif
888
889 /* Prologue */
890 tcg_out32 (s, MFSPR | RT (0) | LR);
891 tcg_out32 (s, STDU | RS (1) | RA (1) | (-frame_size & 0xffff));
892 for (i = 0; i < ARRAY_SIZE (tcg_target_callee_save_regs); ++i)
893 tcg_out32 (s, (STD
894 | RS (tcg_target_callee_save_regs[i])
895 | RA (1)
896 | (i * 8 + 48 + TCG_STATIC_CALL_ARGS_SIZE)
897 )
898 );
899 tcg_out32 (s, STD | RS (0) | RA (1) | (frame_size + 16));
900
901 #ifdef CONFIG_USE_GUEST_BASE
902 if (GUEST_BASE) {
903 tcg_out_movi (s, TCG_TYPE_I64, TCG_GUEST_BASE_REG, GUEST_BASE);
904 tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG);
905 }
906 #endif
907
908 tcg_out32 (s, MTSPR | RS (3) | CTR);
909 tcg_out32 (s, BCCTR | BO_ALWAYS);
910
911 /* Epilogue */
912 tb_ret_addr = s->code_ptr;
913
914 for (i = 0; i < ARRAY_SIZE (tcg_target_callee_save_regs); ++i)
915 tcg_out32 (s, (LD
916 | RT (tcg_target_callee_save_regs[i])
917 | RA (1)
918 | (i * 8 + 48 + TCG_STATIC_CALL_ARGS_SIZE)
919 )
920 );
921 tcg_out32 (s, LD | RT (0) | RA (1) | (frame_size + 16));
922 tcg_out32 (s, MTSPR | RS (0) | LR);
923 tcg_out32 (s, ADDI | RT (1) | RA (1) | frame_size);
924 tcg_out32 (s, BCLR | BO_ALWAYS);
925 }
926
tcg_out_ld(TCGContext * s,TCGType type,int ret,int arg1,tcg_target_long arg2)927 static void tcg_out_ld (TCGContext *s, TCGType type, int ret, int arg1,
928 tcg_target_long arg2)
929 {
930 if (type == TCG_TYPE_I32)
931 tcg_out_ldst (s, ret, arg1, arg2, LWZ, LWZX);
932 else
933 tcg_out_ldsta (s, ret, arg1, arg2, LD, LDX);
934 }
935
tcg_out_st(TCGContext * s,TCGType type,int arg,int arg1,tcg_target_long arg2)936 static void tcg_out_st (TCGContext *s, TCGType type, int arg, int arg1,
937 tcg_target_long arg2)
938 {
939 if (type == TCG_TYPE_I32)
940 tcg_out_ldst (s, arg, arg1, arg2, STW, STWX);
941 else
942 tcg_out_ldsta (s, arg, arg1, arg2, STD, STDX);
943 }
944
ppc_addi32(TCGContext * s,int rt,int ra,tcg_target_long si)945 static void ppc_addi32 (TCGContext *s, int rt, int ra, tcg_target_long si)
946 {
947 if (!si && rt == ra)
948 return;
949
950 if (si == (int16_t) si)
951 tcg_out32 (s, ADDI | RT (rt) | RA (ra) | (si & 0xffff));
952 else {
953 uint16_t h = ((si >> 16) & 0xffff) + ((uint16_t) si >> 15);
954 tcg_out32 (s, ADDIS | RT (rt) | RA (ra) | h);
955 tcg_out32 (s, ADDI | RT (rt) | RA (rt) | (si & 0xffff));
956 }
957 }
958
ppc_addi64(TCGContext * s,int rt,int ra,tcg_target_long si)959 static void ppc_addi64 (TCGContext *s, int rt, int ra, tcg_target_long si)
960 {
961 /* XXX: suboptimal */
962 if (si == (int16_t) si
963 || ((((uint64_t) si >> 31) == 0) && (si & 0x8000) == 0))
964 ppc_addi32 (s, rt, ra, si);
965 else {
966 tcg_out_movi (s, TCG_TYPE_I64, 0, si);
967 tcg_out32 (s, ADD | RT (rt) | RA (ra));
968 }
969 }
970
tcg_out_addi(TCGContext * s,int reg,tcg_target_long val)971 static void tcg_out_addi (TCGContext *s, int reg, tcg_target_long val)
972 {
973 ppc_addi64 (s, reg, reg, val);
974 }
975
tcg_out_cmp(TCGContext * s,int cond,TCGArg arg1,TCGArg arg2,int const_arg2,int cr,int arch64)976 static void tcg_out_cmp (TCGContext *s, int cond, TCGArg arg1, TCGArg arg2,
977 int const_arg2, int cr, int arch64)
978 {
979 int imm;
980 uint32_t op;
981
982 switch (cond) {
983 case TCG_COND_EQ:
984 case TCG_COND_NE:
985 if (const_arg2) {
986 if ((int16_t) arg2 == arg2) {
987 op = CMPI;
988 imm = 1;
989 break;
990 }
991 else if ((uint16_t) arg2 == arg2) {
992 op = CMPLI;
993 imm = 1;
994 break;
995 }
996 }
997 op = CMPL;
998 imm = 0;
999 break;
1000
1001 case TCG_COND_LT:
1002 case TCG_COND_GE:
1003 case TCG_COND_LE:
1004 case TCG_COND_GT:
1005 if (const_arg2) {
1006 if ((int16_t) arg2 == arg2) {
1007 op = CMPI;
1008 imm = 1;
1009 break;
1010 }
1011 }
1012 op = CMP;
1013 imm = 0;
1014 break;
1015
1016 case TCG_COND_LTU:
1017 case TCG_COND_GEU:
1018 case TCG_COND_LEU:
1019 case TCG_COND_GTU:
1020 if (const_arg2) {
1021 if ((uint16_t) arg2 == arg2) {
1022 op = CMPLI;
1023 imm = 1;
1024 break;
1025 }
1026 }
1027 op = CMPL;
1028 imm = 0;
1029 break;
1030
1031 default:
1032 tcg_abort ();
1033 }
1034 op |= BF (cr) | (arch64 << 21);
1035
1036 if (imm)
1037 tcg_out32 (s, op | RA (arg1) | (arg2 & 0xffff));
1038 else {
1039 if (const_arg2) {
1040 tcg_out_movi (s, TCG_TYPE_I64, 0, arg2);
1041 tcg_out32 (s, op | RA (arg1) | RB (0));
1042 }
1043 else
1044 tcg_out32 (s, op | RA (arg1) | RB (arg2));
1045 }
1046
1047 }
1048
tcg_out_setcond(TCGContext * s,TCGType type,TCGCond cond,TCGArg arg0,TCGArg arg1,TCGArg arg2,int const_arg2)1049 static void tcg_out_setcond (TCGContext *s, TCGType type, TCGCond cond,
1050 TCGArg arg0, TCGArg arg1, TCGArg arg2,
1051 int const_arg2)
1052 {
1053 int crop, sh, arg;
1054
1055 switch (cond) {
1056 case TCG_COND_EQ:
1057 if (const_arg2) {
1058 if (!arg2) {
1059 arg = arg1;
1060 }
1061 else {
1062 arg = 0;
1063 if ((uint16_t) arg2 == arg2) {
1064 tcg_out32 (s, XORI | RS (arg1) | RA (0) | arg2);
1065 }
1066 else {
1067 tcg_out_movi (s, type, 0, arg2);
1068 tcg_out32 (s, XOR | SAB (arg1, 0, 0));
1069 }
1070 }
1071 }
1072 else {
1073 arg = 0;
1074 tcg_out32 (s, XOR | SAB (arg1, 0, arg2));
1075 }
1076
1077 if (type == TCG_TYPE_I64) {
1078 tcg_out32 (s, CNTLZD | RS (arg) | RA (0));
1079 tcg_out_rld (s, RLDICL, arg0, 0, 58, 6);
1080 }
1081 else {
1082 tcg_out32 (s, CNTLZW | RS (arg) | RA (0));
1083 tcg_out32 (s, (RLWINM
1084 | RA (arg0)
1085 | RS (0)
1086 | SH (27)
1087 | MB (5)
1088 | ME (31)
1089 )
1090 );
1091 }
1092 break;
1093
1094 case TCG_COND_NE:
1095 if (const_arg2) {
1096 if (!arg2) {
1097 arg = arg1;
1098 }
1099 else {
1100 arg = 0;
1101 if ((uint16_t) arg2 == arg2) {
1102 tcg_out32 (s, XORI | RS (arg1) | RA (0) | arg2);
1103 }
1104 else {
1105 tcg_out_movi (s, type, 0, arg2);
1106 tcg_out32 (s, XOR | SAB (arg1, 0, 0));
1107 }
1108 }
1109 }
1110 else {
1111 arg = 0;
1112 tcg_out32 (s, XOR | SAB (arg1, 0, arg2));
1113 }
1114
1115 if (arg == arg1 && arg1 == arg0) {
1116 tcg_out32 (s, ADDIC | RT (0) | RA (arg) | 0xffff);
1117 tcg_out32 (s, SUBFE | TAB (arg0, 0, arg));
1118 }
1119 else {
1120 tcg_out32 (s, ADDIC | RT (arg0) | RA (arg) | 0xffff);
1121 tcg_out32 (s, SUBFE | TAB (arg0, arg0, arg));
1122 }
1123 break;
1124
1125 case TCG_COND_GT:
1126 case TCG_COND_GTU:
1127 sh = 30;
1128 crop = 0;
1129 goto crtest;
1130
1131 case TCG_COND_LT:
1132 case TCG_COND_LTU:
1133 sh = 29;
1134 crop = 0;
1135 goto crtest;
1136
1137 case TCG_COND_GE:
1138 case TCG_COND_GEU:
1139 sh = 31;
1140 crop = CRNOR | BT (7, CR_EQ) | BA (7, CR_LT) | BB (7, CR_LT);
1141 goto crtest;
1142
1143 case TCG_COND_LE:
1144 case TCG_COND_LEU:
1145 sh = 31;
1146 crop = CRNOR | BT (7, CR_EQ) | BA (7, CR_GT) | BB (7, CR_GT);
1147 crtest:
1148 tcg_out_cmp (s, cond, arg1, arg2, const_arg2, 7, type == TCG_TYPE_I64);
1149 if (crop) tcg_out32 (s, crop);
1150 tcg_out32 (s, MFCR | RT (0));
1151 tcg_out32 (s, (RLWINM
1152 | RA (arg0)
1153 | RS (0)
1154 | SH (sh)
1155 | MB (31)
1156 | ME (31)
1157 )
1158 );
1159 break;
1160
1161 default:
1162 tcg_abort ();
1163 }
1164 }
1165
tcg_out_bc(TCGContext * s,int bc,int label_index)1166 static void tcg_out_bc (TCGContext *s, int bc, int label_index)
1167 {
1168 TCGLabel *l = &s->labels[label_index];
1169
1170 if (l->has_value)
1171 tcg_out32 (s, bc | reloc_pc14_val (s->code_ptr, l->u.value));
1172 else {
1173 uint16_t val = *(uint16_t *) &s->code_ptr[2];
1174
1175 /* Thanks to Andrzej Zaborowski */
1176 tcg_out32 (s, bc | (val & 0xfffc));
1177 tcg_out_reloc (s, s->code_ptr - 4, R_PPC_REL14, label_index, 0);
1178 }
1179 }
1180
tcg_out_brcond(TCGContext * s,TCGCond cond,TCGArg arg1,TCGArg arg2,int const_arg2,int label_index,int arch64)1181 static void tcg_out_brcond (TCGContext *s, TCGCond cond,
1182 TCGArg arg1, TCGArg arg2, int const_arg2,
1183 int label_index, int arch64)
1184 {
1185 tcg_out_cmp (s, cond, arg1, arg2, const_arg2, 7, arch64);
1186 tcg_out_bc (s, tcg_to_bc[cond], label_index);
1187 }
1188
ppc_tb_set_jmp_target(unsigned long jmp_addr,unsigned long addr)1189 void ppc_tb_set_jmp_target (unsigned long jmp_addr, unsigned long addr)
1190 {
1191 TCGContext s;
1192 unsigned long patch_size;
1193
1194 s.code_ptr = (uint8_t *) jmp_addr;
1195 tcg_out_b (&s, 0, addr);
1196 patch_size = s.code_ptr - (uint8_t *) jmp_addr;
1197 flush_icache_range (jmp_addr, jmp_addr + patch_size);
1198 }
1199
tcg_out_op(TCGContext * s,TCGOpcode opc,const TCGArg * args,const int * const_args)1200 static void tcg_out_op (TCGContext *s, TCGOpcode opc, const TCGArg *args,
1201 const int *const_args)
1202 {
1203 int c;
1204
1205 switch (opc) {
1206 case INDEX_op_exit_tb:
1207 tcg_out_movi (s, TCG_TYPE_I64, TCG_REG_R3, args[0]);
1208 tcg_out_b (s, 0, (tcg_target_long) tb_ret_addr);
1209 break;
1210 case INDEX_op_goto_tb:
1211 if (s->tb_jmp_offset) {
1212 /* direct jump method */
1213
1214 s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf;
1215 s->code_ptr += 28;
1216 }
1217 else {
1218 tcg_abort ();
1219 }
1220 s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf;
1221 break;
1222 case INDEX_op_br:
1223 {
1224 TCGLabel *l = &s->labels[args[0]];
1225
1226 if (l->has_value) {
1227 tcg_out_b (s, 0, l->u.value);
1228 }
1229 else {
1230 uint32_t val = *(uint32_t *) s->code_ptr;
1231
1232 /* Thanks to Andrzej Zaborowski */
1233 tcg_out32 (s, B | (val & 0x3fffffc));
1234 tcg_out_reloc (s, s->code_ptr - 4, R_PPC_REL24, args[0], 0);
1235 }
1236 }
1237 break;
1238 case INDEX_op_call:
1239 tcg_out_call (s, args[0], const_args[0]);
1240 break;
1241 case INDEX_op_jmp:
1242 if (const_args[0]) {
1243 tcg_out_b (s, 0, args[0]);
1244 }
1245 else {
1246 tcg_out32 (s, MTSPR | RS (args[0]) | CTR);
1247 tcg_out32 (s, BCCTR | BO_ALWAYS);
1248 }
1249 break;
1250 case INDEX_op_movi_i32:
1251 tcg_out_movi (s, TCG_TYPE_I32, args[0], args[1]);
1252 break;
1253 case INDEX_op_movi_i64:
1254 tcg_out_movi (s, TCG_TYPE_I64, args[0], args[1]);
1255 break;
1256 case INDEX_op_ld8u_i32:
1257 case INDEX_op_ld8u_i64:
1258 tcg_out_ldst (s, args[0], args[1], args[2], LBZ, LBZX);
1259 break;
1260 case INDEX_op_ld8s_i32:
1261 case INDEX_op_ld8s_i64:
1262 tcg_out_ldst (s, args[0], args[1], args[2], LBZ, LBZX);
1263 tcg_out32 (s, EXTSB | RS (args[0]) | RA (args[0]));
1264 break;
1265 case INDEX_op_ld16u_i32:
1266 case INDEX_op_ld16u_i64:
1267 tcg_out_ldst (s, args[0], args[1], args[2], LHZ, LHZX);
1268 break;
1269 case INDEX_op_ld16s_i32:
1270 case INDEX_op_ld16s_i64:
1271 tcg_out_ldst (s, args[0], args[1], args[2], LHA, LHAX);
1272 break;
1273 case INDEX_op_ld_i32:
1274 case INDEX_op_ld32u_i64:
1275 tcg_out_ldst (s, args[0], args[1], args[2], LWZ, LWZX);
1276 break;
1277 case INDEX_op_ld32s_i64:
1278 tcg_out_ldsta (s, args[0], args[1], args[2], LWA, LWAX);
1279 break;
1280 case INDEX_op_ld_i64:
1281 tcg_out_ldsta (s, args[0], args[1], args[2], LD, LDX);
1282 break;
1283 case INDEX_op_st8_i32:
1284 case INDEX_op_st8_i64:
1285 tcg_out_ldst (s, args[0], args[1], args[2], STB, STBX);
1286 break;
1287 case INDEX_op_st16_i32:
1288 case INDEX_op_st16_i64:
1289 tcg_out_ldst (s, args[0], args[1], args[2], STH, STHX);
1290 break;
1291 case INDEX_op_st_i32:
1292 case INDEX_op_st32_i64:
1293 tcg_out_ldst (s, args[0], args[1], args[2], STW, STWX);
1294 break;
1295 case INDEX_op_st_i64:
1296 tcg_out_ldsta (s, args[0], args[1], args[2], STD, STDX);
1297 break;
1298
1299 case INDEX_op_add_i32:
1300 if (const_args[2])
1301 ppc_addi32 (s, args[0], args[1], args[2]);
1302 else
1303 tcg_out32 (s, ADD | TAB (args[0], args[1], args[2]));
1304 break;
1305 case INDEX_op_sub_i32:
1306 if (const_args[2])
1307 ppc_addi32 (s, args[0], args[1], -args[2]);
1308 else
1309 tcg_out32 (s, SUBF | TAB (args[0], args[2], args[1]));
1310 break;
1311
1312 case INDEX_op_and_i64:
1313 case INDEX_op_and_i32:
1314 if (const_args[2]) {
1315 if ((args[2] & 0xffff) == args[2])
1316 tcg_out32 (s, ANDI | RS (args[1]) | RA (args[0]) | args[2]);
1317 else if ((args[2] & 0xffff0000) == args[2])
1318 tcg_out32 (s, ANDIS | RS (args[1]) | RA (args[0])
1319 | ((args[2] >> 16) & 0xffff));
1320 else {
1321 tcg_out_movi (s, (opc == INDEX_op_and_i32
1322 ? TCG_TYPE_I32
1323 : TCG_TYPE_I64),
1324 0, args[2]);
1325 tcg_out32 (s, AND | SAB (args[1], args[0], 0));
1326 }
1327 }
1328 else
1329 tcg_out32 (s, AND | SAB (args[1], args[0], args[2]));
1330 break;
1331 case INDEX_op_or_i64:
1332 case INDEX_op_or_i32:
1333 if (const_args[2]) {
1334 if (args[2] & 0xffff) {
1335 tcg_out32 (s, ORI | RS (args[1]) | RA (args[0])
1336 | (args[2] & 0xffff));
1337 if (args[2] >> 16)
1338 tcg_out32 (s, ORIS | RS (args[0]) | RA (args[0])
1339 | ((args[2] >> 16) & 0xffff));
1340 }
1341 else {
1342 tcg_out32 (s, ORIS | RS (args[1]) | RA (args[0])
1343 | ((args[2] >> 16) & 0xffff));
1344 }
1345 }
1346 else
1347 tcg_out32 (s, OR | SAB (args[1], args[0], args[2]));
1348 break;
1349 case INDEX_op_xor_i64:
1350 case INDEX_op_xor_i32:
1351 if (const_args[2]) {
1352 if ((args[2] & 0xffff) == args[2])
1353 tcg_out32 (s, XORI | RS (args[1]) | RA (args[0])
1354 | (args[2] & 0xffff));
1355 else if ((args[2] & 0xffff0000) == args[2])
1356 tcg_out32 (s, XORIS | RS (args[1]) | RA (args[0])
1357 | ((args[2] >> 16) & 0xffff));
1358 else {
1359 tcg_out_movi (s, (opc == INDEX_op_and_i32
1360 ? TCG_TYPE_I32
1361 : TCG_TYPE_I64),
1362 0, args[2]);
1363 tcg_out32 (s, XOR | SAB (args[1], args[0], 0));
1364 }
1365 }
1366 else
1367 tcg_out32 (s, XOR | SAB (args[1], args[0], args[2]));
1368 break;
1369
1370 case INDEX_op_mul_i32:
1371 if (const_args[2]) {
1372 if (args[2] == (int16_t) args[2])
1373 tcg_out32 (s, MULLI | RT (args[0]) | RA (args[1])
1374 | (args[2] & 0xffff));
1375 else {
1376 tcg_out_movi (s, TCG_TYPE_I32, 0, args[2]);
1377 tcg_out32 (s, MULLW | TAB (args[0], args[1], 0));
1378 }
1379 }
1380 else
1381 tcg_out32 (s, MULLW | TAB (args[0], args[1], args[2]));
1382 break;
1383
1384 case INDEX_op_div_i32:
1385 tcg_out32 (s, DIVW | TAB (args[0], args[1], args[2]));
1386 break;
1387
1388 case INDEX_op_divu_i32:
1389 tcg_out32 (s, DIVWU | TAB (args[0], args[1], args[2]));
1390 break;
1391
1392 case INDEX_op_rem_i32:
1393 tcg_out32 (s, DIVW | TAB (0, args[1], args[2]));
1394 tcg_out32 (s, MULLW | TAB (0, 0, args[2]));
1395 tcg_out32 (s, SUBF | TAB (args[0], 0, args[1]));
1396 break;
1397
1398 case INDEX_op_remu_i32:
1399 tcg_out32 (s, DIVWU | TAB (0, args[1], args[2]));
1400 tcg_out32 (s, MULLW | TAB (0, 0, args[2]));
1401 tcg_out32 (s, SUBF | TAB (args[0], 0, args[1]));
1402 break;
1403
1404 case INDEX_op_shl_i32:
1405 if (const_args[2]) {
1406 tcg_out32 (s, (RLWINM
1407 | RA (args[0])
1408 | RS (args[1])
1409 | SH (args[2])
1410 | MB (0)
1411 | ME (31 - args[2])
1412 )
1413 );
1414 }
1415 else
1416 tcg_out32 (s, SLW | SAB (args[1], args[0], args[2]));
1417 break;
1418 case INDEX_op_shr_i32:
1419 if (const_args[2]) {
1420 tcg_out32 (s, (RLWINM
1421 | RA (args[0])
1422 | RS (args[1])
1423 | SH (32 - args[2])
1424 | MB (args[2])
1425 | ME (31)
1426 )
1427 );
1428 }
1429 else
1430 tcg_out32 (s, SRW | SAB (args[1], args[0], args[2]));
1431 break;
1432 case INDEX_op_sar_i32:
1433 if (const_args[2])
1434 tcg_out32 (s, SRAWI | RS (args[1]) | RA (args[0]) | SH (args[2]));
1435 else
1436 tcg_out32 (s, SRAW | SAB (args[1], args[0], args[2]));
1437 break;
1438
1439 case INDEX_op_brcond_i32:
1440 tcg_out_brcond (s, args[2], args[0], args[1], const_args[1], args[3], 0);
1441 break;
1442
1443 case INDEX_op_brcond_i64:
1444 tcg_out_brcond (s, args[2], args[0], args[1], const_args[1], args[3], 1);
1445 break;
1446
1447 case INDEX_op_neg_i32:
1448 case INDEX_op_neg_i64:
1449 tcg_out32 (s, NEG | RT (args[0]) | RA (args[1]));
1450 break;
1451
1452 case INDEX_op_add_i64:
1453 if (const_args[2])
1454 ppc_addi64 (s, args[0], args[1], args[2]);
1455 else
1456 tcg_out32 (s, ADD | TAB (args[0], args[1], args[2]));
1457 break;
1458 case INDEX_op_sub_i64:
1459 if (const_args[2])
1460 ppc_addi64 (s, args[0], args[1], -args[2]);
1461 else
1462 tcg_out32 (s, SUBF | TAB (args[0], args[2], args[1]));
1463 break;
1464
1465 case INDEX_op_shl_i64:
1466 if (const_args[2])
1467 tcg_out_rld (s, RLDICR, args[0], args[1], args[2], 63 - args[2]);
1468 else
1469 tcg_out32 (s, SLD | SAB (args[1], args[0], args[2]));
1470 break;
1471 case INDEX_op_shr_i64:
1472 if (const_args[2])
1473 tcg_out_rld (s, RLDICL, args[0], args[1], 64 - args[2], args[2]);
1474 else
1475 tcg_out32 (s, SRD | SAB (args[1], args[0], args[2]));
1476 break;
1477 case INDEX_op_sar_i64:
1478 if (const_args[2]) {
1479 int sh = SH (args[2] & 0x1f) | (((args[2] >> 5) & 1) << 1);
1480 tcg_out32 (s, SRADI | RA (args[0]) | RS (args[1]) | sh);
1481 }
1482 else
1483 tcg_out32 (s, SRAD | SAB (args[1], args[0], args[2]));
1484 break;
1485
1486 case INDEX_op_mul_i64:
1487 tcg_out32 (s, MULLD | TAB (args[0], args[1], args[2]));
1488 break;
1489 case INDEX_op_div_i64:
1490 tcg_out32 (s, DIVD | TAB (args[0], args[1], args[2]));
1491 break;
1492 case INDEX_op_divu_i64:
1493 tcg_out32 (s, DIVDU | TAB (args[0], args[1], args[2]));
1494 break;
1495 case INDEX_op_rem_i64:
1496 tcg_out32 (s, DIVD | TAB (0, args[1], args[2]));
1497 tcg_out32 (s, MULLD | TAB (0, 0, args[2]));
1498 tcg_out32 (s, SUBF | TAB (args[0], 0, args[1]));
1499 break;
1500 case INDEX_op_remu_i64:
1501 tcg_out32 (s, DIVDU | TAB (0, args[1], args[2]));
1502 tcg_out32 (s, MULLD | TAB (0, 0, args[2]));
1503 tcg_out32 (s, SUBF | TAB (args[0], 0, args[1]));
1504 break;
1505
1506 case INDEX_op_qemu_ld8u:
1507 tcg_out_qemu_ld (s, args, 0);
1508 break;
1509 case INDEX_op_qemu_ld8s:
1510 tcg_out_qemu_ld (s, args, 0 | 4);
1511 break;
1512 case INDEX_op_qemu_ld16u:
1513 tcg_out_qemu_ld (s, args, 1);
1514 break;
1515 case INDEX_op_qemu_ld16s:
1516 tcg_out_qemu_ld (s, args, 1 | 4);
1517 break;
1518 case INDEX_op_qemu_ld32:
1519 case INDEX_op_qemu_ld32u:
1520 tcg_out_qemu_ld (s, args, 2);
1521 break;
1522 case INDEX_op_qemu_ld32s:
1523 tcg_out_qemu_ld (s, args, 2 | 4);
1524 break;
1525 case INDEX_op_qemu_ld64:
1526 tcg_out_qemu_ld (s, args, 3);
1527 break;
1528 case INDEX_op_qemu_st8:
1529 tcg_out_qemu_st (s, args, 0);
1530 break;
1531 case INDEX_op_qemu_st16:
1532 tcg_out_qemu_st (s, args, 1);
1533 break;
1534 case INDEX_op_qemu_st32:
1535 tcg_out_qemu_st (s, args, 2);
1536 break;
1537 case INDEX_op_qemu_st64:
1538 tcg_out_qemu_st (s, args, 3);
1539 break;
1540
1541 case INDEX_op_ext8s_i32:
1542 case INDEX_op_ext8s_i64:
1543 c = EXTSB;
1544 goto gen_ext;
1545 case INDEX_op_ext16s_i32:
1546 case INDEX_op_ext16s_i64:
1547 c = EXTSH;
1548 goto gen_ext;
1549 case INDEX_op_ext32s_i64:
1550 c = EXTSW;
1551 goto gen_ext;
1552 gen_ext:
1553 tcg_out32 (s, c | RS (args[1]) | RA (args[0]));
1554 break;
1555
1556 case INDEX_op_setcond_i32:
1557 tcg_out_setcond (s, TCG_TYPE_I32, args[3], args[0], args[1], args[2],
1558 const_args[2]);
1559 break;
1560 case INDEX_op_setcond_i64:
1561 tcg_out_setcond (s, TCG_TYPE_I64, args[3], args[0], args[1], args[2],
1562 const_args[2]);
1563 break;
1564
1565 default:
1566 tcg_dump_ops (s, stderr);
1567 tcg_abort ();
1568 }
1569 }
1570
1571 static const TCGTargetOpDef ppc_op_defs[] = {
1572 { INDEX_op_exit_tb, { } },
1573 { INDEX_op_goto_tb, { } },
1574 { INDEX_op_call, { "ri" } },
1575 { INDEX_op_jmp, { "ri" } },
1576 { INDEX_op_br, { } },
1577
1578 { INDEX_op_mov_i32, { "r", "r" } },
1579 { INDEX_op_mov_i64, { "r", "r" } },
1580 { INDEX_op_movi_i32, { "r" } },
1581 { INDEX_op_movi_i64, { "r" } },
1582
1583 { INDEX_op_ld8u_i32, { "r", "r" } },
1584 { INDEX_op_ld8s_i32, { "r", "r" } },
1585 { INDEX_op_ld16u_i32, { "r", "r" } },
1586 { INDEX_op_ld16s_i32, { "r", "r" } },
1587 { INDEX_op_ld_i32, { "r", "r" } },
1588 { INDEX_op_ld_i64, { "r", "r" } },
1589 { INDEX_op_st8_i32, { "r", "r" } },
1590 { INDEX_op_st8_i64, { "r", "r" } },
1591 { INDEX_op_st16_i32, { "r", "r" } },
1592 { INDEX_op_st16_i64, { "r", "r" } },
1593 { INDEX_op_st_i32, { "r", "r" } },
1594 { INDEX_op_st_i64, { "r", "r" } },
1595 { INDEX_op_st32_i64, { "r", "r" } },
1596
1597 { INDEX_op_ld8u_i64, { "r", "r" } },
1598 { INDEX_op_ld8s_i64, { "r", "r" } },
1599 { INDEX_op_ld16u_i64, { "r", "r" } },
1600 { INDEX_op_ld16s_i64, { "r", "r" } },
1601 { INDEX_op_ld32u_i64, { "r", "r" } },
1602 { INDEX_op_ld32s_i64, { "r", "r" } },
1603 { INDEX_op_ld_i64, { "r", "r" } },
1604
1605 { INDEX_op_add_i32, { "r", "r", "ri" } },
1606 { INDEX_op_mul_i32, { "r", "r", "ri" } },
1607 { INDEX_op_div_i32, { "r", "r", "r" } },
1608 { INDEX_op_divu_i32, { "r", "r", "r" } },
1609 { INDEX_op_rem_i32, { "r", "r", "r" } },
1610 { INDEX_op_remu_i32, { "r", "r", "r" } },
1611 { INDEX_op_sub_i32, { "r", "r", "ri" } },
1612 { INDEX_op_and_i32, { "r", "r", "ri" } },
1613 { INDEX_op_or_i32, { "r", "r", "ri" } },
1614 { INDEX_op_xor_i32, { "r", "r", "ri" } },
1615
1616 { INDEX_op_shl_i32, { "r", "r", "ri" } },
1617 { INDEX_op_shr_i32, { "r", "r", "ri" } },
1618 { INDEX_op_sar_i32, { "r", "r", "ri" } },
1619
1620 { INDEX_op_brcond_i32, { "r", "ri" } },
1621 { INDEX_op_brcond_i64, { "r", "ri" } },
1622
1623 { INDEX_op_neg_i32, { "r", "r" } },
1624
1625 { INDEX_op_add_i64, { "r", "r", "ri" } },
1626 { INDEX_op_sub_i64, { "r", "r", "ri" } },
1627 { INDEX_op_and_i64, { "r", "r", "rZ" } },
1628 { INDEX_op_or_i64, { "r", "r", "rZ" } },
1629 { INDEX_op_xor_i64, { "r", "r", "rZ" } },
1630
1631 { INDEX_op_shl_i64, { "r", "r", "ri" } },
1632 { INDEX_op_shr_i64, { "r", "r", "ri" } },
1633 { INDEX_op_sar_i64, { "r", "r", "ri" } },
1634
1635 { INDEX_op_mul_i64, { "r", "r", "r" } },
1636 { INDEX_op_div_i64, { "r", "r", "r" } },
1637 { INDEX_op_divu_i64, { "r", "r", "r" } },
1638 { INDEX_op_rem_i64, { "r", "r", "r" } },
1639 { INDEX_op_remu_i64, { "r", "r", "r" } },
1640
1641 { INDEX_op_neg_i64, { "r", "r" } },
1642
1643 { INDEX_op_qemu_ld8u, { "r", "L" } },
1644 { INDEX_op_qemu_ld8s, { "r", "L" } },
1645 { INDEX_op_qemu_ld16u, { "r", "L" } },
1646 { INDEX_op_qemu_ld16s, { "r", "L" } },
1647 { INDEX_op_qemu_ld32, { "r", "L" } },
1648 { INDEX_op_qemu_ld32u, { "r", "L" } },
1649 { INDEX_op_qemu_ld32s, { "r", "L" } },
1650 { INDEX_op_qemu_ld64, { "r", "L" } },
1651
1652 { INDEX_op_qemu_st8, { "S", "S" } },
1653 { INDEX_op_qemu_st16, { "S", "S" } },
1654 { INDEX_op_qemu_st32, { "S", "S" } },
1655 { INDEX_op_qemu_st64, { "S", "S" } },
1656
1657 { INDEX_op_ext8s_i32, { "r", "r" } },
1658 { INDEX_op_ext16s_i32, { "r", "r" } },
1659 { INDEX_op_ext8s_i64, { "r", "r" } },
1660 { INDEX_op_ext16s_i64, { "r", "r" } },
1661 { INDEX_op_ext32s_i64, { "r", "r" } },
1662
1663 { INDEX_op_setcond_i32, { "r", "r", "ri" } },
1664 { INDEX_op_setcond_i64, { "r", "r", "ri" } },
1665
1666 { -1 },
1667 };
1668
tcg_target_init(TCGContext * s)1669 static void tcg_target_init (TCGContext *s)
1670 {
1671 tcg_regset_set32 (tcg_target_available_regs[TCG_TYPE_I32], 0, 0xffffffff);
1672 tcg_regset_set32 (tcg_target_available_regs[TCG_TYPE_I64], 0, 0xffffffff);
1673 tcg_regset_set32 (tcg_target_call_clobber_regs, 0,
1674 (1 << TCG_REG_R0) |
1675 #ifdef __APPLE__
1676 (1 << TCG_REG_R2) |
1677 #endif
1678 (1 << TCG_REG_R3) |
1679 (1 << TCG_REG_R4) |
1680 (1 << TCG_REG_R5) |
1681 (1 << TCG_REG_R6) |
1682 (1 << TCG_REG_R7) |
1683 (1 << TCG_REG_R8) |
1684 (1 << TCG_REG_R9) |
1685 (1 << TCG_REG_R10) |
1686 (1 << TCG_REG_R11) |
1687 (1 << TCG_REG_R12)
1688 );
1689
1690 tcg_regset_clear (s->reserved_regs);
1691 tcg_regset_set_reg (s->reserved_regs, TCG_REG_R0);
1692 tcg_regset_set_reg (s->reserved_regs, TCG_REG_R1);
1693 #ifndef __APPLE__
1694 tcg_regset_set_reg (s->reserved_regs, TCG_REG_R2);
1695 #endif
1696 tcg_regset_set_reg (s->reserved_regs, TCG_REG_R13);
1697
1698 tcg_add_target_add_op_defs (ppc_op_defs);
1699 }
1700