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1
/*
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 * Tiny Code Generator for QEMU
3
 *
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 * Copyright (c) 2008 Fabrice Bellard
5
 *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to deal
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 * in the Software without restriction, including without limitation the rights
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 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * copies of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in
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 * all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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 * THE SOFTWARE.
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 */
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
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#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",
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    "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",
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    "r16",
68
    "r17",
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    "r18",
70
    "r19",
71
    "r20",
72
    "r21",
73
    "r22",
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    "r23",
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    "r24",
76
    "r25",
77
    "r26",
78
    "r27",
79
    "r28",
80
    "r29",
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    "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[] = {
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,
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    TCG_REG_R19,
147
    TCG_REG_R20,
148
    TCG_REG_R21,
149
    TCG_REG_R22,
150
    TCG_REG_R23,
151
    TCG_REG_R24,
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    TCG_REG_R25,
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    TCG_REG_R26,
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    TCG_REG_R27, /* currently used for the global env */
155
    TCG_REG_R28,
156
    TCG_REG_R29,
157
    TCG_REG_R30,
158
    TCG_REG_R31
159
};
160

    
161
static uint32_t reloc_pc24_val (void *pc, tcg_target_long target)
162
{
163
    tcg_target_long disp;
164

    
165
    disp = target - (tcg_target_long) pc;
166
    if ((disp << 38) >> 38 != disp)
167
        tcg_abort ();
168

    
169
    return disp & 0x3fffffc;
170
}
171

    
172
static void reloc_pc24 (void *pc, tcg_target_long target)
173
{
174
    *(uint32_t *) pc = (*(uint32_t *) pc & ~0x3fffffc)
175
        | reloc_pc24_val (pc, target);
176
}
177

    
178
static uint16_t reloc_pc14_val (void *pc, tcg_target_long target)
179
{
180
    tcg_target_long disp;
181

    
182
    disp = target - (tcg_target_long) pc;
183
    if (disp != (int16_t) disp)
184
        tcg_abort ();
185

    
186
    return disp & 0xfffc;
187
}
188

    
189
static void reloc_pc14 (void *pc, tcg_target_long target)
190
{
191
    *(uint32_t *) pc = (*(uint32_t *) pc & ~0xfffc)
192
        | reloc_pc14_val (pc, target);
193
}
194

    
195
static void patch_reloc (uint8_t *code_ptr, int type,
196
                         tcg_target_long value, tcg_target_long addend)
197
{
198
    value += addend;
199
    switch (type) {
200
    case R_PPC_REL14:
201
        reloc_pc14 (code_ptr, value);
202
        break;
203
    case R_PPC_REL24:
204
        reloc_pc24 (code_ptr, value);
205
        break;
206
    default:
207
        tcg_abort ();
208
    }
209
}
210

    
211
/* maximum number of register used for input function arguments */
212
static int tcg_target_get_call_iarg_regs_count (int flags)
213
{
214
    return ARRAY_SIZE (tcg_target_call_iarg_regs);
215
}
216

    
217
/* parse target specific constraints */
218
static int target_parse_constraint (TCGArgConstraint *ct, const char **pct_str)
219
{
220
    const char *ct_str;
221

    
222
    ct_str = *pct_str;
223
    switch (ct_str[0]) {
224
    case 'A': case 'B': case 'C': case 'D':
225
        ct->ct |= TCG_CT_REG;
226
        tcg_regset_set_reg (ct->u.regs, 3 + ct_str[0] - 'A');
227
        break;
228
    case 'r':
229
        ct->ct |= TCG_CT_REG;
230
        tcg_regset_set32 (ct->u.regs, 0, 0xffffffff);
231
        break;
232
    case 'L':                   /* qemu_ld constraint */
233
        ct->ct |= TCG_CT_REG;
234
        tcg_regset_set32 (ct->u.regs, 0, 0xffffffff);
235
        tcg_regset_reset_reg (ct->u.regs, TCG_REG_R3);
236
#ifdef CONFIG_SOFTMMU
237
        tcg_regset_reset_reg (ct->u.regs, TCG_REG_R4);
238
#ifdef CONFIG_TCG_PASS_AREG0
239
        tcg_regset_reset_reg (ct->u.regs, TCG_REG_R5);
240
#endif
241
#endif
242
        break;
243
    case 'S':                   /* qemu_st constraint */
244
        ct->ct |= TCG_CT_REG;
245
        tcg_regset_set32 (ct->u.regs, 0, 0xffffffff);
246
        tcg_regset_reset_reg (ct->u.regs, TCG_REG_R3);
247
#ifdef CONFIG_SOFTMMU
248
        tcg_regset_reset_reg (ct->u.regs, TCG_REG_R4);
249
        tcg_regset_reset_reg (ct->u.regs, TCG_REG_R5);
250
#ifdef CONFIG_TCG_PASS_AREG0
251
        tcg_regset_reset_reg (ct->u.regs, TCG_REG_R6);
252
#endif
253
#endif
254
        break;
255
    case 'Z':
256
        ct->ct |= TCG_CT_CONST_U32;
257
        break;
258
    default:
259
        return -1;
260
    }
261
    ct_str++;
262
    *pct_str = ct_str;
263
    return 0;
264
}
265

    
266
/* test if a constant matches the constraint */
267
static int tcg_target_const_match (tcg_target_long val,
268
                                   const TCGArgConstraint *arg_ct)
269
{
270
    int ct;
271

    
272
    ct = arg_ct->ct;
273
    if (ct & TCG_CT_CONST)
274
        return 1;
275
    else if ((ct & TCG_CT_CONST_U32) && (val == (uint32_t) val))
276
        return 1;
277
    return 0;
278
}
279

    
280
#define OPCD(opc) ((opc)<<26)
281
#define XO19(opc) (OPCD(19)|((opc)<<1))
282
#define XO30(opc) (OPCD(30)|((opc)<<2))
283
#define XO31(opc) (OPCD(31)|((opc)<<1))
284
#define XO58(opc) (OPCD(58)|(opc))
285
#define XO62(opc) (OPCD(62)|(opc))
286

    
287
#define B      OPCD( 18)
288
#define BC     OPCD( 16)
289
#define LBZ    OPCD( 34)
290
#define LHZ    OPCD( 40)
291
#define LHA    OPCD( 42)
292
#define LWZ    OPCD( 32)
293
#define STB    OPCD( 38)
294
#define STH    OPCD( 44)
295
#define STW    OPCD( 36)
296

    
297
#define STD    XO62(  0)
298
#define STDU   XO62(  1)
299
#define STDX   XO31(149)
300

    
301
#define LD     XO58(  0)
302
#define LDX    XO31( 21)
303
#define LDU    XO58(  1)
304
#define LWA    XO58(  2)
305
#define LWAX   XO31(341)
306

    
307
#define ADDIC  OPCD( 12)
308
#define ADDI   OPCD( 14)
309
#define ADDIS  OPCD( 15)
310
#define ORI    OPCD( 24)
311
#define ORIS   OPCD( 25)
312
#define XORI   OPCD( 26)
313
#define XORIS  OPCD( 27)
314
#define ANDI   OPCD( 28)
315
#define ANDIS  OPCD( 29)
316
#define MULLI  OPCD(  7)
317
#define CMPLI  OPCD( 10)
318
#define CMPI   OPCD( 11)
319

    
320
#define LWZU   OPCD( 33)
321
#define STWU   OPCD( 37)
322

    
323
#define RLWINM OPCD( 21)
324

    
325
#define RLDICL XO30(  0)
326
#define RLDICR XO30(  1)
327
#define RLDIMI XO30(  3)
328

    
329
#define BCLR   XO19( 16)
330
#define BCCTR  XO19(528)
331
#define CRAND  XO19(257)
332
#define CRANDC XO19(129)
333
#define CRNAND XO19(225)
334
#define CROR   XO19(449)
335
#define CRNOR  XO19( 33)
336

    
337
#define EXTSB  XO31(954)
338
#define EXTSH  XO31(922)
339
#define EXTSW  XO31(986)
340
#define ADD    XO31(266)
341
#define ADDE   XO31(138)
342
#define ADDC   XO31( 10)
343
#define AND    XO31( 28)
344
#define SUBF   XO31( 40)
345
#define SUBFC  XO31(  8)
346
#define SUBFE  XO31(136)
347
#define OR     XO31(444)
348
#define XOR    XO31(316)
349
#define MULLW  XO31(235)
350
#define MULHWU XO31( 11)
351
#define DIVW   XO31(491)
352
#define DIVWU  XO31(459)
353
#define CMP    XO31(  0)
354
#define CMPL   XO31( 32)
355
#define LHBRX  XO31(790)
356
#define LWBRX  XO31(534)
357
#define STHBRX XO31(918)
358
#define STWBRX XO31(662)
359
#define MFSPR  XO31(339)
360
#define MTSPR  XO31(467)
361
#define SRAWI  XO31(824)
362
#define NEG    XO31(104)
363
#define MFCR   XO31( 19)
364
#define NOR    XO31(124)
365
#define CNTLZW XO31( 26)
366
#define CNTLZD XO31( 58)
367

    
368
#define MULLD  XO31(233)
369
#define MULHD  XO31( 73)
370
#define MULHDU XO31(  9)
371
#define DIVD   XO31(489)
372
#define DIVDU  XO31(457)
373

    
374
#define LBZX   XO31( 87)
375
#define LHZX   XO31(279)
376
#define LHAX   XO31(343)
377
#define LWZX   XO31( 23)
378
#define STBX   XO31(215)
379
#define STHX   XO31(407)
380
#define STWX   XO31(151)
381

    
382
#define SPR(a,b) ((((a)<<5)|(b))<<11)
383
#define LR     SPR(8, 0)
384
#define CTR    SPR(9, 0)
385

    
386
#define SLW    XO31( 24)
387
#define SRW    XO31(536)
388
#define SRAW   XO31(792)
389

    
390
#define SLD    XO31( 27)
391
#define SRD    XO31(539)
392
#define SRAD   XO31(794)
393
#define SRADI  XO31(413<<1)
394

    
395
#define TW     XO31( 4)
396
#define TRAP   (TW | TO (31))
397

    
398
#define RT(r) ((r)<<21)
399
#define RS(r) ((r)<<21)
400
#define RA(r) ((r)<<16)
401
#define RB(r) ((r)<<11)
402
#define TO(t) ((t)<<21)
403
#define SH(s) ((s)<<11)
404
#define MB(b) ((b)<<6)
405
#define ME(e) ((e)<<1)
406
#define BO(o) ((o)<<21)
407
#define MB64(b) ((b)<<5)
408

    
409
#define LK    1
410

    
411
#define TAB(t,a,b) (RT(t) | RA(a) | RB(b))
412
#define SAB(s,a,b) (RS(s) | RA(a) | RB(b))
413

    
414
#define BF(n)    ((n)<<23)
415
#define BI(n, c) (((c)+((n)*4))<<16)
416
#define BT(n, c) (((c)+((n)*4))<<21)
417
#define BA(n, c) (((c)+((n)*4))<<16)
418
#define BB(n, c) (((c)+((n)*4))<<11)
419

    
420
#define BO_COND_TRUE  BO (12)
421
#define BO_COND_FALSE BO ( 4)
422
#define BO_ALWAYS     BO (20)
423

    
424
enum {
425
    CR_LT,
426
    CR_GT,
427
    CR_EQ,
428
    CR_SO
429
};
430

    
431
static const uint32_t tcg_to_bc[10] = {
432
    [TCG_COND_EQ]  = BC | BI (7, CR_EQ) | BO_COND_TRUE,
433
    [TCG_COND_NE]  = BC | BI (7, CR_EQ) | BO_COND_FALSE,
434
    [TCG_COND_LT]  = BC | BI (7, CR_LT) | BO_COND_TRUE,
435
    [TCG_COND_GE]  = BC | BI (7, CR_LT) | BO_COND_FALSE,
436
    [TCG_COND_LE]  = BC | BI (7, CR_GT) | BO_COND_FALSE,
437
    [TCG_COND_GT]  = BC | BI (7, CR_GT) | BO_COND_TRUE,
438
    [TCG_COND_LTU] = BC | BI (7, CR_LT) | BO_COND_TRUE,
439
    [TCG_COND_GEU] = BC | BI (7, CR_LT) | BO_COND_FALSE,
440
    [TCG_COND_LEU] = BC | BI (7, CR_GT) | BO_COND_FALSE,
441
    [TCG_COND_GTU] = BC | BI (7, CR_GT) | BO_COND_TRUE,
442
};
443

    
444
static void tcg_out_mov (TCGContext *s, TCGType type, TCGReg ret, TCGReg arg)
445
{
446
    tcg_out32 (s, OR | SAB (arg, ret, arg));
447
}
448

    
449
static void tcg_out_rld (TCGContext *s, int op, int ra, int rs, int sh, int mb)
450
{
451
    sh = SH (sh & 0x1f) | (((sh >> 5) & 1) << 1);
452
    mb = MB64 ((mb >> 5) | ((mb << 1) & 0x3f));
453
    tcg_out32 (s, op | RA (ra) | RS (rs) | sh | mb);
454
}
455

    
456
static void tcg_out_movi32 (TCGContext *s, int ret, int32_t arg)
457
{
458
    if (arg == (int16_t) arg)
459
        tcg_out32 (s, ADDI | RT (ret) | RA (0) | (arg & 0xffff));
460
    else {
461
        tcg_out32 (s, ADDIS | RT (ret) | RA (0) | ((arg >> 16) & 0xffff));
462
        if (arg & 0xffff)
463
            tcg_out32 (s, ORI | RS (ret) | RA (ret) | (arg & 0xffff));
464
    }
465
}
466

    
467
static void tcg_out_movi (TCGContext *s, TCGType type,
468
                          TCGReg ret, tcg_target_long arg)
469
{
470
    int32_t arg32 = arg;
471
    arg = type == TCG_TYPE_I32 ? arg & 0xffffffff : arg;
472

    
473
    if (arg == arg32) {
474
        tcg_out_movi32 (s, ret, arg32);
475
    }
476
    else {
477
        if ((uint64_t) arg >> 32) {
478
            uint16_t h16 = arg >> 16;
479
            uint16_t l16 = arg;
480

    
481
            tcg_out_movi32 (s, ret, arg >> 32);
482
            tcg_out_rld (s, RLDICR, ret, ret, 32, 31);
483
            if (h16) tcg_out32 (s, ORIS | RS (ret) | RA (ret) | h16);
484
            if (l16) tcg_out32 (s, ORI | RS (ret) | RA (ret) | l16);
485
        }
486
        else {
487
            tcg_out_movi32 (s, ret, arg32);
488
            if (arg32 < 0)
489
                tcg_out_rld (s, RLDICL, ret, ret, 0, 32);
490
        }
491
    }
492
}
493

    
494
static void tcg_out_b (TCGContext *s, int mask, tcg_target_long target)
495
{
496
    tcg_target_long disp;
497

    
498
    disp = target - (tcg_target_long) s->code_ptr;
499
    if ((disp << 38) >> 38 == disp)
500
        tcg_out32 (s, B | (disp & 0x3fffffc) | mask);
501
    else {
502
        tcg_out_movi (s, TCG_TYPE_I64, 0, (tcg_target_long) target);
503
        tcg_out32 (s, MTSPR | RS (0) | CTR);
504
        tcg_out32 (s, BCCTR | BO_ALWAYS | mask);
505
    }
506
}
507

    
508
static void tcg_out_call (TCGContext *s, tcg_target_long arg, int const_arg)
509
{
510
#ifdef __APPLE__
511
    if (const_arg) {
512
        tcg_out_b (s, LK, arg);
513
    }
514
    else {
515
        tcg_out32 (s, MTSPR | RS (arg) | LR);
516
        tcg_out32 (s, BCLR | BO_ALWAYS | LK);
517
    }
518
#else
519
    int reg;
520

    
521
    if (const_arg) {
522
        reg = 2;
523
        tcg_out_movi (s, TCG_TYPE_I64, reg, arg);
524
    }
525
    else reg = arg;
526

    
527
    tcg_out32 (s, LD | RT (0) | RA (reg));
528
    tcg_out32 (s, MTSPR | RA (0) | CTR);
529
    tcg_out32 (s, LD | RT (11) | RA (reg) | 16);
530
    tcg_out32 (s, LD | RT (2) | RA (reg) | 8);
531
    tcg_out32 (s, BCCTR | BO_ALWAYS | LK);
532
#endif
533
}
534

    
535
static void tcg_out_ldst (TCGContext *s, int ret, int addr,
536
                          int offset, int op1, int op2)
537
{
538
    if (offset == (int16_t) offset)
539
        tcg_out32 (s, op1 | RT (ret) | RA (addr) | (offset & 0xffff));
540
    else {
541
        tcg_out_movi (s, TCG_TYPE_I64, 0, offset);
542
        tcg_out32 (s, op2 | RT (ret) | RA (addr) | RB (0));
543
    }
544
}
545

    
546
static void tcg_out_ldsta (TCGContext *s, int ret, int addr,
547
                           int offset, int op1, int op2)
548
{
549
    if (offset == (int16_t) (offset & ~3))
550
        tcg_out32 (s, op1 | RT (ret) | RA (addr) | (offset & 0xffff));
551
    else {
552
        tcg_out_movi (s, TCG_TYPE_I64, 0, offset);
553
        tcg_out32 (s, op2 | RT (ret) | RA (addr) | RB (0));
554
    }
555
}
556

    
557
#if defined (CONFIG_SOFTMMU)
558

    
559
#include "../../softmmu_defs.h"
560

    
561
#ifdef CONFIG_TCG_PASS_AREG0
562
/* helper signature: helper_ld_mmu(CPUState *env, target_ulong addr,
563
   int mmu_idx) */
564
static const void * const qemu_ld_helpers[4] = {
565
    helper_ldb_mmu,
566
    helper_ldw_mmu,
567
    helper_ldl_mmu,
568
    helper_ldq_mmu,
569
};
570

    
571
/* helper signature: helper_st_mmu(CPUState *env, target_ulong addr,
572
   uintxx_t val, int mmu_idx) */
573
static const void * const qemu_st_helpers[4] = {
574
    helper_stb_mmu,
575
    helper_stw_mmu,
576
    helper_stl_mmu,
577
    helper_stq_mmu,
578
};
579
#else
580
/* legacy helper signature: __ld_mmu(target_ulong addr, int
581
   mmu_idx) */
582
static void *qemu_ld_helpers[4] = {
583
    __ldb_mmu,
584
    __ldw_mmu,
585
    __ldl_mmu,
586
    __ldq_mmu,
587
};
588

    
589
/* legacy helper signature: __st_mmu(target_ulong addr, uintxx_t val,
590
   int mmu_idx) */
591
static void *qemu_st_helpers[4] = {
592
    __stb_mmu,
593
    __stw_mmu,
594
    __stl_mmu,
595
    __stq_mmu,
596
};
597
#endif
598

    
599
static void tcg_out_tlb_read (TCGContext *s, int r0, int r1, int r2,
600
                              int addr_reg, int s_bits, int offset)
601
{
602
#if TARGET_LONG_BITS == 32
603
    tcg_out_rld (s, RLDICL, addr_reg, addr_reg, 0, 32);
604

    
605
    tcg_out32 (s, (RLWINM
606
                   | RA (r0)
607
                   | RS (addr_reg)
608
                   | SH (32 - (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS))
609
                   | MB (32 - (CPU_TLB_BITS + CPU_TLB_ENTRY_BITS))
610
                   | ME (31 - CPU_TLB_ENTRY_BITS)
611
                   )
612
        );
613
    tcg_out32 (s, ADD | RT (r0) | RA (r0) | RB (TCG_AREG0));
614
    tcg_out32 (s, (LWZU | RT (r1) | RA (r0) | offset));
615
    tcg_out32 (s, (RLWINM
616
                   | RA (r2)
617
                   | RS (addr_reg)
618
                   | SH (0)
619
                   | MB ((32 - s_bits) & 31)
620
                   | ME (31 - TARGET_PAGE_BITS)
621
                   )
622
        );
623
#else
624
    tcg_out_rld (s, RLDICL, r0, addr_reg,
625
                 64 - TARGET_PAGE_BITS,
626
                 64 - CPU_TLB_BITS);
627
    tcg_out_rld (s, RLDICR, r0, r0,
628
                 CPU_TLB_ENTRY_BITS,
629
                 63 - CPU_TLB_ENTRY_BITS);
630

    
631
    tcg_out32 (s, ADD | TAB (r0, r0, TCG_AREG0));
632
    tcg_out32 (s, LD_ADDR | RT (r1) | RA (r0) | offset);
633

    
634
    if (!s_bits) {
635
        tcg_out_rld (s, RLDICR, r2, addr_reg, 0, 63 - TARGET_PAGE_BITS);
636
    }
637
    else {
638
        tcg_out_rld (s, RLDICL, r2, addr_reg,
639
                     64 - TARGET_PAGE_BITS,
640
                     TARGET_PAGE_BITS - s_bits);
641
        tcg_out_rld (s, RLDICL, r2, r2, TARGET_PAGE_BITS, 0);
642
    }
643
#endif
644
}
645
#endif
646

    
647
static void tcg_out_qemu_ld (TCGContext *s, const TCGArg *args, int opc)
648
{
649
    int addr_reg, data_reg, r0, r1, rbase, bswap;
650
#ifdef CONFIG_SOFTMMU
651
    int r2, mem_index, s_bits, ir;
652
    void *label1_ptr, *label2_ptr;
653
#endif
654

    
655
    data_reg = *args++;
656
    addr_reg = *args++;
657

    
658
#ifdef CONFIG_SOFTMMU
659
    mem_index = *args;
660
    s_bits = opc & 3;
661

    
662
    r0 = 3;
663
    r1 = 4;
664
    r2 = 0;
665
    rbase = 0;
666

    
667
    tcg_out_tlb_read (s, r0, r1, r2, addr_reg, s_bits,
668
                      offsetof (CPUArchState, tlb_table[mem_index][0].addr_read));
669

    
670
    tcg_out32 (s, CMP | BF (7) | RA (r2) | RB (r1) | CMP_L);
671

    
672
    label1_ptr = s->code_ptr;
673
#ifdef FAST_PATH
674
    tcg_out32 (s, BC | BI (7, CR_EQ) | BO_COND_TRUE);
675
#endif
676

    
677
    /* slow path */
678
    ir = 3;
679
#ifdef CONFIG_TCG_PASS_AREG0
680
    tcg_out_mov (s, TCG_TYPE_I64, ir++, TCG_AREG0);
681
#endif
682
    tcg_out_mov (s, TCG_TYPE_I64, ir++, addr_reg);
683
    tcg_out_movi (s, TCG_TYPE_I64, ir++, mem_index);
684

    
685
    tcg_out_call (s, (tcg_target_long) qemu_ld_helpers[s_bits], 1);
686

    
687
    switch (opc) {
688
    case 0|4:
689
        tcg_out32 (s, EXTSB | RA (data_reg) | RS (3));
690
        break;
691
    case 1|4:
692
        tcg_out32 (s, EXTSH | RA (data_reg) | RS (3));
693
        break;
694
    case 2|4:
695
        tcg_out32 (s, EXTSW | RA (data_reg) | RS (3));
696
        break;
697
    case 0:
698
    case 1:
699
    case 2:
700
    case 3:
701
        if (data_reg != 3)
702
            tcg_out_mov (s, TCG_TYPE_I64, data_reg, 3);
703
        break;
704
    }
705
    label2_ptr = s->code_ptr;
706
    tcg_out32 (s, B);
707

    
708
    /* label1: fast path */
709
#ifdef FAST_PATH
710
    reloc_pc14 (label1_ptr, (tcg_target_long) s->code_ptr);
711
#endif
712

    
713
    /* r0 now contains &env->tlb_table[mem_index][index].addr_read */
714
    tcg_out32 (s, (LD
715
                   | RT (r0)
716
                   | RA (r0)
717
                   | (offsetof (CPUTLBEntry, addend)
718
                      - offsetof (CPUTLBEntry, addr_read))
719
                   ));
720
    /* r0 = env->tlb_table[mem_index][index].addend */
721
    tcg_out32 (s, ADD | RT (r0) | RA (r0) | RB (addr_reg));
722
    /* r0 = env->tlb_table[mem_index][index].addend + addr */
723

    
724
#else  /* !CONFIG_SOFTMMU */
725
#if TARGET_LONG_BITS == 32
726
    tcg_out_rld (s, RLDICL, addr_reg, addr_reg, 0, 32);
727
#endif
728
    r0 = addr_reg;
729
    r1 = 3;
730
    rbase = GUEST_BASE ? TCG_GUEST_BASE_REG : 0;
731
#endif
732

    
733
#ifdef TARGET_WORDS_BIGENDIAN
734
    bswap = 0;
735
#else
736
    bswap = 1;
737
#endif
738
    switch (opc) {
739
    default:
740
    case 0:
741
        tcg_out32 (s, LBZX | TAB (data_reg, rbase, r0));
742
        break;
743
    case 0|4:
744
        tcg_out32 (s, LBZX | TAB (data_reg, rbase, r0));
745
        tcg_out32 (s, EXTSB | RA (data_reg) | RS (data_reg));
746
        break;
747
    case 1:
748
        if (bswap)
749
            tcg_out32 (s, LHBRX | TAB (data_reg, rbase, r0));
750
        else
751
            tcg_out32 (s, LHZX | TAB (data_reg, rbase, r0));
752
        break;
753
    case 1|4:
754
        if (bswap) {
755
            tcg_out32 (s, LHBRX | TAB (data_reg, rbase, r0));
756
            tcg_out32 (s, EXTSH | RA (data_reg) | RS (data_reg));
757
        }
758
        else tcg_out32 (s, LHAX | TAB (data_reg, rbase, r0));
759
        break;
760
    case 2:
761
        if (bswap)
762
            tcg_out32 (s, LWBRX | TAB (data_reg, rbase, r0));
763
        else
764
            tcg_out32 (s, LWZX | TAB (data_reg, rbase, r0));
765
        break;
766
    case 2|4:
767
        if (bswap) {
768
            tcg_out32 (s, LWBRX | TAB (data_reg, rbase, r0));
769
            tcg_out32 (s, EXTSW | RA (data_reg) | RS (data_reg));
770
        }
771
        else tcg_out32 (s, LWAX | TAB (data_reg, rbase, r0));
772
        break;
773
    case 3:
774
#ifdef CONFIG_USE_GUEST_BASE
775
        if (bswap) {
776
            tcg_out32 (s, ADDI | RT (r1) | RA (r0) | 4);
777
            tcg_out32 (s, LWBRX | TAB (data_reg, rbase, r0));
778
            tcg_out32 (s, LWBRX | TAB (      r1, rbase, r1));
779
            tcg_out_rld (s, RLDIMI, data_reg, r1, 32, 0);
780
        }
781
        else tcg_out32 (s, LDX | TAB (data_reg, rbase, r0));
782
#else
783
        if (bswap) {
784
            tcg_out_movi32 (s, 0, 4);
785
            tcg_out32 (s, LWBRX | RT (data_reg) | RB (r0));
786
            tcg_out32 (s, LWBRX | RT (      r1) | RA (r0));
787
            tcg_out_rld (s, RLDIMI, data_reg, r1, 32, 0);
788
        }
789
        else tcg_out32 (s, LD | RT (data_reg) | RA (r0));
790
#endif
791
        break;
792
    }
793

    
794
#ifdef CONFIG_SOFTMMU
795
    reloc_pc24 (label2_ptr, (tcg_target_long) s->code_ptr);
796
#endif
797
}
798

    
799
static void tcg_out_qemu_st (TCGContext *s, const TCGArg *args, int opc)
800
{
801
    int addr_reg, r0, r1, rbase, data_reg, bswap;
802
#ifdef CONFIG_SOFTMMU
803
    int r2, mem_index, ir;
804
    void *label1_ptr, *label2_ptr;
805
#endif
806

    
807
    data_reg = *args++;
808
    addr_reg = *args++;
809

    
810
#ifdef CONFIG_SOFTMMU
811
    mem_index = *args;
812

    
813
    r0 = 3;
814
    r1 = 4;
815
    r2 = 0;
816
    rbase = 0;
817

    
818
    tcg_out_tlb_read (s, r0, r1, r2, addr_reg, opc,
819
                      offsetof (CPUArchState, tlb_table[mem_index][0].addr_write));
820

    
821
    tcg_out32 (s, CMP | BF (7) | RA (r2) | RB (r1) | CMP_L);
822

    
823
    label1_ptr = s->code_ptr;
824
#ifdef FAST_PATH
825
    tcg_out32 (s, BC | BI (7, CR_EQ) | BO_COND_TRUE);
826
#endif
827

    
828
    /* slow path */
829
    ir = 3;
830
#ifdef CONFIG_TCG_PASS_AREG0
831
    tcg_out_mov (s, TCG_TYPE_I64, ir++, TCG_AREG0);
832
#endif
833
    tcg_out_mov (s, TCG_TYPE_I64, ir++, addr_reg);
834
    tcg_out_rld (s, RLDICL, ir++, data_reg, 0, 64 - (1 << (3 + opc)));
835
    tcg_out_movi (s, TCG_TYPE_I64, ir++, mem_index);
836

    
837
    tcg_out_call (s, (tcg_target_long) qemu_st_helpers[opc], 1);
838

    
839
    label2_ptr = s->code_ptr;
840
    tcg_out32 (s, B);
841

    
842
    /* label1: fast path */
843
#ifdef FAST_PATH
844
    reloc_pc14 (label1_ptr, (tcg_target_long) s->code_ptr);
845
#endif
846

    
847
    tcg_out32 (s, (LD
848
                   | RT (r0)
849
                   | RA (r0)
850
                   | (offsetof (CPUTLBEntry, addend)
851
                      - offsetof (CPUTLBEntry, addr_write))
852
                   ));
853
    /* r0 = env->tlb_table[mem_index][index].addend */
854
    tcg_out32 (s, ADD | RT (r0) | RA (r0) | RB (addr_reg));
855
    /* r0 = env->tlb_table[mem_index][index].addend + addr */
856

    
857
#else  /* !CONFIG_SOFTMMU */
858
#if TARGET_LONG_BITS == 32
859
    tcg_out_rld (s, RLDICL, addr_reg, addr_reg, 0, 32);
860
#endif
861
    r1 = 3;
862
    r0 = addr_reg;
863
    rbase = GUEST_BASE ? TCG_GUEST_BASE_REG : 0;
864
#endif
865

    
866
#ifdef TARGET_WORDS_BIGENDIAN
867
    bswap = 0;
868
#else
869
    bswap = 1;
870
#endif
871
    switch (opc) {
872
    case 0:
873
        tcg_out32 (s, STBX | SAB (data_reg, rbase, r0));
874
        break;
875
    case 1:
876
        if (bswap)
877
            tcg_out32 (s, STHBRX | SAB (data_reg, rbase, r0));
878
        else
879
            tcg_out32 (s, STHX | SAB (data_reg, rbase, r0));
880
        break;
881
    case 2:
882
        if (bswap)
883
            tcg_out32 (s, STWBRX | SAB (data_reg, rbase, r0));
884
        else
885
            tcg_out32 (s, STWX | SAB (data_reg, rbase, r0));
886
        break;
887
    case 3:
888
        if (bswap) {
889
            tcg_out32 (s, STWBRX | SAB (data_reg, rbase, r0));
890
            tcg_out32 (s, ADDI | RT (r1) | RA (r0) | 4);
891
            tcg_out_rld (s, RLDICL, 0, data_reg, 32, 0);
892
            tcg_out32 (s, STWBRX | SAB (0, rbase, r1));
893
        }
894
        else tcg_out32 (s, STDX | SAB (data_reg, rbase, r0));
895
        break;
896
    }
897

    
898
#ifdef CONFIG_SOFTMMU
899
    reloc_pc24 (label2_ptr, (tcg_target_long) s->code_ptr);
900
#endif
901
}
902

    
903
static void tcg_target_qemu_prologue (TCGContext *s)
904
{
905
    int i, frame_size;
906
#ifndef __APPLE__
907
    uint64_t addr;
908
#endif
909

    
910
    frame_size = 0
911
        + 8                     /* back chain */
912
        + 8                     /* CR */
913
        + 8                     /* LR */
914
        + 8                     /* compiler doubleword */
915
        + 8                     /* link editor doubleword */
916
        + 8                     /* TOC save area */
917
        + TCG_STATIC_CALL_ARGS_SIZE
918
        + ARRAY_SIZE (tcg_target_callee_save_regs) * 8
919
        + CPU_TEMP_BUF_NLONGS * sizeof(long)
920
        ;
921
    frame_size = (frame_size + 15) & ~15;
922

    
923
    tcg_set_frame (s, TCG_REG_CALL_STACK, frame_size
924
                   - CPU_TEMP_BUF_NLONGS * sizeof (long),
925
                   CPU_TEMP_BUF_NLONGS * sizeof (long));
926

    
927
#ifndef __APPLE__
928
    /* First emit adhoc function descriptor */
929
    addr = (uint64_t) s->code_ptr + 24;
930
    tcg_out32 (s, addr >> 32); tcg_out32 (s, addr); /* entry point */
931
    s->code_ptr += 16;          /* skip TOC and environment pointer */
932
#endif
933

    
934
    /* Prologue */
935
    tcg_out32 (s, MFSPR | RT (0) | LR);
936
    tcg_out32 (s, STDU | RS (1) | RA (1) | (-frame_size & 0xffff));
937
    for (i = 0; i < ARRAY_SIZE (tcg_target_callee_save_regs); ++i)
938
        tcg_out32 (s, (STD
939
                       | RS (tcg_target_callee_save_regs[i])
940
                       | RA (1)
941
                       | (i * 8 + 48 + TCG_STATIC_CALL_ARGS_SIZE)
942
                       )
943
            );
944
    tcg_out32 (s, STD | RS (0) | RA (1) | (frame_size + 16));
945

    
946
#ifdef CONFIG_USE_GUEST_BASE
947
    if (GUEST_BASE) {
948
        tcg_out_movi (s, TCG_TYPE_I64, TCG_GUEST_BASE_REG, GUEST_BASE);
949
        tcg_regset_set_reg (s->reserved_regs, TCG_GUEST_BASE_REG);
950
    }
951
#endif
952

    
953
    tcg_out_mov (s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]);
954
    tcg_out32 (s, MTSPR | RS (tcg_target_call_iarg_regs[1]) | CTR);
955
    tcg_out32 (s, BCCTR | BO_ALWAYS);
956

    
957
    /* Epilogue */
958
    tb_ret_addr = s->code_ptr;
959

    
960
    for (i = 0; i < ARRAY_SIZE (tcg_target_callee_save_regs); ++i)
961
        tcg_out32 (s, (LD
962
                       | RT (tcg_target_callee_save_regs[i])
963
                       | RA (1)
964
                       | (i * 8 + 48 + TCG_STATIC_CALL_ARGS_SIZE)
965
                       )
966
            );
967
    tcg_out32 (s, LD | RT (0) | RA (1) | (frame_size + 16));
968
    tcg_out32 (s, MTSPR | RS (0) | LR);
969
    tcg_out32 (s, ADDI | RT (1) | RA (1) | frame_size);
970
    tcg_out32 (s, BCLR | BO_ALWAYS);
971
}
972

    
973
static void tcg_out_ld (TCGContext *s, TCGType type, TCGReg ret, TCGReg arg1,
974
                        tcg_target_long arg2)
975
{
976
    if (type == TCG_TYPE_I32)
977
        tcg_out_ldst (s, ret, arg1, arg2, LWZ, LWZX);
978
    else
979
        tcg_out_ldsta (s, ret, arg1, arg2, LD, LDX);
980
}
981

    
982
static void tcg_out_st (TCGContext *s, TCGType type, TCGReg arg, TCGReg arg1,
983
                        tcg_target_long arg2)
984
{
985
    if (type == TCG_TYPE_I32)
986
        tcg_out_ldst (s, arg, arg1, arg2, STW, STWX);
987
    else
988
        tcg_out_ldsta (s, arg, arg1, arg2, STD, STDX);
989
}
990

    
991
static void ppc_addi32 (TCGContext *s, int rt, int ra, tcg_target_long si)
992
{
993
    if (!si && rt == ra)
994
        return;
995

    
996
    if (si == (int16_t) si)
997
        tcg_out32 (s, ADDI | RT (rt) | RA (ra) | (si & 0xffff));
998
    else {
999
        uint16_t h = ((si >> 16) & 0xffff) + ((uint16_t) si >> 15);
1000
        tcg_out32 (s, ADDIS | RT (rt) | RA (ra) | h);
1001
        tcg_out32 (s, ADDI | RT (rt) | RA (rt) | (si & 0xffff));
1002
    }
1003
}
1004

    
1005
static void ppc_addi64 (TCGContext *s, int rt, int ra, tcg_target_long si)
1006
{
1007
    /* XXX: suboptimal */
1008
    if (si == (int16_t) si
1009
        || ((((uint64_t) si >> 31) == 0) && (si & 0x8000) == 0))
1010
        ppc_addi32 (s, rt, ra, si);
1011
    else {
1012
        tcg_out_movi (s, TCG_TYPE_I64, 0, si);
1013
        tcg_out32 (s, ADD | RT (rt) | RA (ra));
1014
    }
1015
}
1016

    
1017
static void tcg_out_cmp (TCGContext *s, int cond, TCGArg arg1, TCGArg arg2,
1018
                         int const_arg2, int cr, int arch64)
1019
{
1020
    int imm;
1021
    uint32_t op;
1022

    
1023
    switch (cond) {
1024
    case TCG_COND_EQ:
1025
    case TCG_COND_NE:
1026
        if (const_arg2) {
1027
            if ((int16_t) arg2 == arg2) {
1028
                op = CMPI;
1029
                imm = 1;
1030
                break;
1031
            }
1032
            else if ((uint16_t) arg2 == arg2) {
1033
                op = CMPLI;
1034
                imm = 1;
1035
                break;
1036
            }
1037
        }
1038
        op = CMPL;
1039
        imm = 0;
1040
        break;
1041

    
1042
    case TCG_COND_LT:
1043
    case TCG_COND_GE:
1044
    case TCG_COND_LE:
1045
    case TCG_COND_GT:
1046
        if (const_arg2) {
1047
            if ((int16_t) arg2 == arg2) {
1048
                op = CMPI;
1049
                imm = 1;
1050
                break;
1051
            }
1052
        }
1053
        op = CMP;
1054
        imm = 0;
1055
        break;
1056

    
1057
    case TCG_COND_LTU:
1058
    case TCG_COND_GEU:
1059
    case TCG_COND_LEU:
1060
    case TCG_COND_GTU:
1061
        if (const_arg2) {
1062
            if ((uint16_t) arg2 == arg2) {
1063
                op = CMPLI;
1064
                imm = 1;
1065
                break;
1066
            }
1067
        }
1068
        op = CMPL;
1069
        imm = 0;
1070
        break;
1071

    
1072
    default:
1073
        tcg_abort ();
1074
    }
1075
    op |= BF (cr) | (arch64 << 21);
1076

    
1077
    if (imm)
1078
        tcg_out32 (s, op | RA (arg1) | (arg2 & 0xffff));
1079
    else {
1080
        if (const_arg2) {
1081
            tcg_out_movi (s, TCG_TYPE_I64, 0, arg2);
1082
            tcg_out32 (s, op | RA (arg1) | RB (0));
1083
        }
1084
        else
1085
            tcg_out32 (s, op | RA (arg1) | RB (arg2));
1086
    }
1087

    
1088
}
1089

    
1090
static void tcg_out_setcond (TCGContext *s, TCGType type, TCGCond cond,
1091
                             TCGArg arg0, TCGArg arg1, TCGArg arg2,
1092
                             int const_arg2)
1093
{
1094
    int crop, sh, arg;
1095

    
1096
    switch (cond) {
1097
    case TCG_COND_EQ:
1098
        if (const_arg2) {
1099
            if (!arg2) {
1100
                arg = arg1;
1101
            }
1102
            else {
1103
                arg = 0;
1104
                if ((uint16_t) arg2 == arg2) {
1105
                    tcg_out32 (s, XORI | RS (arg1) | RA (0) | arg2);
1106
                }
1107
                else {
1108
                    tcg_out_movi (s, type, 0, arg2);
1109
                    tcg_out32 (s, XOR | SAB (arg1, 0, 0));
1110
                }
1111
            }
1112
        }
1113
        else {
1114
            arg = 0;
1115
            tcg_out32 (s, XOR | SAB (arg1, 0, arg2));
1116
        }
1117

    
1118
        if (type == TCG_TYPE_I64) {
1119
            tcg_out32 (s, CNTLZD | RS (arg) | RA (0));
1120
            tcg_out_rld (s, RLDICL, arg0, 0, 58, 6);
1121
        }
1122
        else {
1123
            tcg_out32 (s, CNTLZW | RS (arg) | RA (0));
1124
            tcg_out32 (s, (RLWINM
1125
                           | RA (arg0)
1126
                           | RS (0)
1127
                           | SH (27)
1128
                           | MB (5)
1129
                           | ME (31)
1130
                           )
1131
                );
1132
        }
1133
        break;
1134

    
1135
    case TCG_COND_NE:
1136
        if (const_arg2) {
1137
            if (!arg2) {
1138
                arg = arg1;
1139
            }
1140
            else {
1141
                arg = 0;
1142
                if ((uint16_t) arg2 == arg2) {
1143
                    tcg_out32 (s, XORI | RS (arg1) | RA (0) | arg2);
1144
                }
1145
                else {
1146
                    tcg_out_movi (s, type, 0, arg2);
1147
                    tcg_out32 (s, XOR | SAB (arg1, 0, 0));
1148
                }
1149
            }
1150
        }
1151
        else {
1152
            arg = 0;
1153
            tcg_out32 (s, XOR | SAB (arg1, 0, arg2));
1154
        }
1155

    
1156
        if (arg == arg1 && arg1 == arg0) {
1157
            tcg_out32 (s, ADDIC | RT (0) | RA (arg) | 0xffff);
1158
            tcg_out32 (s, SUBFE | TAB (arg0, 0, arg));
1159
        }
1160
        else {
1161
            tcg_out32 (s, ADDIC | RT (arg0) | RA (arg) | 0xffff);
1162
            tcg_out32 (s, SUBFE | TAB (arg0, arg0, arg));
1163
        }
1164
        break;
1165

    
1166
    case TCG_COND_GT:
1167
    case TCG_COND_GTU:
1168
        sh = 30;
1169
        crop = 0;
1170
        goto crtest;
1171

    
1172
    case TCG_COND_LT:
1173
    case TCG_COND_LTU:
1174
        sh = 29;
1175
        crop = 0;
1176
        goto crtest;
1177

    
1178
    case TCG_COND_GE:
1179
    case TCG_COND_GEU:
1180
        sh = 31;
1181
        crop = CRNOR | BT (7, CR_EQ) | BA (7, CR_LT) | BB (7, CR_LT);
1182
        goto crtest;
1183

    
1184
    case TCG_COND_LE:
1185
    case TCG_COND_LEU:
1186
        sh = 31;
1187
        crop = CRNOR | BT (7, CR_EQ) | BA (7, CR_GT) | BB (7, CR_GT);
1188
    crtest:
1189
        tcg_out_cmp (s, cond, arg1, arg2, const_arg2, 7, type == TCG_TYPE_I64);
1190
        if (crop) tcg_out32 (s, crop);
1191
        tcg_out32 (s, MFCR | RT (0));
1192
        tcg_out32 (s, (RLWINM
1193
                       | RA (arg0)
1194
                       | RS (0)
1195
                       | SH (sh)
1196
                       | MB (31)
1197
                       | ME (31)
1198
                       )
1199
            );
1200
        break;
1201

    
1202
    default:
1203
        tcg_abort ();
1204
    }
1205
}
1206

    
1207
static void tcg_out_bc (TCGContext *s, int bc, int label_index)
1208
{
1209
    TCGLabel *l = &s->labels[label_index];
1210

    
1211
    if (l->has_value)
1212
        tcg_out32 (s, bc | reloc_pc14_val (s->code_ptr, l->u.value));
1213
    else {
1214
        uint16_t val = *(uint16_t *) &s->code_ptr[2];
1215

    
1216
        /* Thanks to Andrzej Zaborowski */
1217
        tcg_out32 (s, bc | (val & 0xfffc));
1218
        tcg_out_reloc (s, s->code_ptr - 4, R_PPC_REL14, label_index, 0);
1219
    }
1220
}
1221

    
1222
static void tcg_out_brcond (TCGContext *s, TCGCond cond,
1223
                            TCGArg arg1, TCGArg arg2, int const_arg2,
1224
                            int label_index, int arch64)
1225
{
1226
    tcg_out_cmp (s, cond, arg1, arg2, const_arg2, 7, arch64);
1227
    tcg_out_bc (s, tcg_to_bc[cond], label_index);
1228
}
1229

    
1230
void ppc_tb_set_jmp_target (unsigned long jmp_addr, unsigned long addr)
1231
{
1232
    TCGContext s;
1233
    unsigned long patch_size;
1234

    
1235
    s.code_ptr = (uint8_t *) jmp_addr;
1236
    tcg_out_b (&s, 0, addr);
1237
    patch_size = s.code_ptr - (uint8_t *) jmp_addr;
1238
    flush_icache_range (jmp_addr, jmp_addr + patch_size);
1239
}
1240

    
1241
static void tcg_out_op (TCGContext *s, TCGOpcode opc, const TCGArg *args,
1242
                        const int *const_args)
1243
{
1244
    int c;
1245

    
1246
    switch (opc) {
1247
    case INDEX_op_exit_tb:
1248
        tcg_out_movi (s, TCG_TYPE_I64, TCG_REG_R3, args[0]);
1249
        tcg_out_b (s, 0, (tcg_target_long) tb_ret_addr);
1250
        break;
1251
    case INDEX_op_goto_tb:
1252
        if (s->tb_jmp_offset) {
1253
            /* direct jump method */
1254

    
1255
            s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf;
1256
            s->code_ptr += 28;
1257
        }
1258
        else {
1259
            tcg_abort ();
1260
        }
1261
        s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf;
1262
        break;
1263
    case INDEX_op_br:
1264
        {
1265
            TCGLabel *l = &s->labels[args[0]];
1266

    
1267
            if (l->has_value) {
1268
                tcg_out_b (s, 0, l->u.value);
1269
            }
1270
            else {
1271
                uint32_t val = *(uint32_t *) s->code_ptr;
1272

    
1273
                /* Thanks to Andrzej Zaborowski */
1274
                tcg_out32 (s, B | (val & 0x3fffffc));
1275
                tcg_out_reloc (s, s->code_ptr - 4, R_PPC_REL24, args[0], 0);
1276
            }
1277
        }
1278
        break;
1279
    case INDEX_op_call:
1280
        tcg_out_call (s, args[0], const_args[0]);
1281
        break;
1282
    case INDEX_op_jmp:
1283
        if (const_args[0]) {
1284
            tcg_out_b (s, 0, args[0]);
1285
        }
1286
        else {
1287
            tcg_out32 (s, MTSPR | RS (args[0]) | CTR);
1288
            tcg_out32 (s, BCCTR | BO_ALWAYS);
1289
        }
1290
        break;
1291
    case INDEX_op_movi_i32:
1292
        tcg_out_movi (s, TCG_TYPE_I32, args[0], args[1]);
1293
        break;
1294
    case INDEX_op_movi_i64:
1295
        tcg_out_movi (s, TCG_TYPE_I64, args[0], args[1]);
1296
        break;
1297
    case INDEX_op_ld8u_i32:
1298
    case INDEX_op_ld8u_i64:
1299
        tcg_out_ldst (s, args[0], args[1], args[2], LBZ, LBZX);
1300
        break;
1301
    case INDEX_op_ld8s_i32:
1302
    case INDEX_op_ld8s_i64:
1303
        tcg_out_ldst (s, args[0], args[1], args[2], LBZ, LBZX);
1304
        tcg_out32 (s, EXTSB | RS (args[0]) | RA (args[0]));
1305
        break;
1306
    case INDEX_op_ld16u_i32:
1307
    case INDEX_op_ld16u_i64:
1308
        tcg_out_ldst (s, args[0], args[1], args[2], LHZ, LHZX);
1309
        break;
1310
    case INDEX_op_ld16s_i32:
1311
    case INDEX_op_ld16s_i64:
1312
        tcg_out_ldst (s, args[0], args[1], args[2], LHA, LHAX);
1313
        break;
1314
    case INDEX_op_ld_i32:
1315
    case INDEX_op_ld32u_i64:
1316
        tcg_out_ldst (s, args[0], args[1], args[2], LWZ, LWZX);
1317
        break;
1318
    case INDEX_op_ld32s_i64:
1319
        tcg_out_ldsta (s, args[0], args[1], args[2], LWA, LWAX);
1320
        break;
1321
    case INDEX_op_ld_i64:
1322
        tcg_out_ldsta (s, args[0], args[1], args[2], LD, LDX);
1323
        break;
1324
    case INDEX_op_st8_i32:
1325
    case INDEX_op_st8_i64:
1326
        tcg_out_ldst (s, args[0], args[1], args[2], STB, STBX);
1327
        break;
1328
    case INDEX_op_st16_i32:
1329
    case INDEX_op_st16_i64:
1330
        tcg_out_ldst (s, args[0], args[1], args[2], STH, STHX);
1331
        break;
1332
    case INDEX_op_st_i32:
1333
    case INDEX_op_st32_i64:
1334
        tcg_out_ldst (s, args[0], args[1], args[2], STW, STWX);
1335
        break;
1336
    case INDEX_op_st_i64:
1337
        tcg_out_ldsta (s, args[0], args[1], args[2], STD, STDX);
1338
        break;
1339

    
1340
    case INDEX_op_add_i32:
1341
        if (const_args[2])
1342
            ppc_addi32 (s, args[0], args[1], args[2]);
1343
        else
1344
            tcg_out32 (s, ADD | TAB (args[0], args[1], args[2]));
1345
        break;
1346
    case INDEX_op_sub_i32:
1347
        if (const_args[2])
1348
            ppc_addi32 (s, args[0], args[1], -args[2]);
1349
        else
1350
            tcg_out32 (s, SUBF | TAB (args[0], args[2], args[1]));
1351
        break;
1352

    
1353
    case INDEX_op_and_i64:
1354
    case INDEX_op_and_i32:
1355
        if (const_args[2]) {
1356
            if ((args[2] & 0xffff) == args[2])
1357
                tcg_out32 (s, ANDI | RS (args[1]) | RA (args[0]) | args[2]);
1358
            else if ((args[2] & 0xffff0000) == args[2])
1359
                tcg_out32 (s, ANDIS | RS (args[1]) | RA (args[0])
1360
                           | ((args[2] >> 16) & 0xffff));
1361
            else {
1362
                tcg_out_movi (s, (opc == INDEX_op_and_i32
1363
                                  ? TCG_TYPE_I32
1364
                                  : TCG_TYPE_I64),
1365
                              0, args[2]);
1366
                tcg_out32 (s, AND | SAB (args[1], args[0], 0));
1367
            }
1368
        }
1369
        else
1370
            tcg_out32 (s, AND | SAB (args[1], args[0], args[2]));
1371
        break;
1372
    case INDEX_op_or_i64:
1373
    case INDEX_op_or_i32:
1374
        if (const_args[2]) {
1375
            if (args[2] & 0xffff) {
1376
                tcg_out32 (s, ORI | RS (args[1]) | RA (args[0])
1377
                           | (args[2] & 0xffff));
1378
                if (args[2] >> 16)
1379
                    tcg_out32 (s, ORIS | RS (args[0])  | RA (args[0])
1380
                               | ((args[2] >> 16) & 0xffff));
1381
            }
1382
            else {
1383
                tcg_out32 (s, ORIS | RS (args[1])  | RA (args[0])
1384
                           | ((args[2] >> 16) & 0xffff));
1385
            }
1386
        }
1387
        else
1388
            tcg_out32 (s, OR | SAB (args[1], args[0], args[2]));
1389
        break;
1390
    case INDEX_op_xor_i64:
1391
    case INDEX_op_xor_i32:
1392
        if (const_args[2]) {
1393
            if ((args[2] & 0xffff) == args[2])
1394
                tcg_out32 (s, XORI | RS (args[1])  | RA (args[0])
1395
                           | (args[2] & 0xffff));
1396
            else if ((args[2] & 0xffff0000) == args[2])
1397
                tcg_out32 (s, XORIS | RS (args[1])  | RA (args[0])
1398
                           | ((args[2] >> 16) & 0xffff));
1399
            else {
1400
                tcg_out_movi (s, (opc == INDEX_op_and_i32
1401
                                  ? TCG_TYPE_I32
1402
                                  : TCG_TYPE_I64),
1403
                              0, args[2]);
1404
                tcg_out32 (s, XOR | SAB (args[1], args[0], 0));
1405
            }
1406
        }
1407
        else
1408
            tcg_out32 (s, XOR | SAB (args[1], args[0], args[2]));
1409
        break;
1410

    
1411
    case INDEX_op_mul_i32:
1412
        if (const_args[2]) {
1413
            if (args[2] == (int16_t) args[2])
1414
                tcg_out32 (s, MULLI | RT (args[0]) | RA (args[1])
1415
                           | (args[2] & 0xffff));
1416
            else {
1417
                tcg_out_movi (s, TCG_TYPE_I32, 0, args[2]);
1418
                tcg_out32 (s, MULLW | TAB (args[0], args[1], 0));
1419
            }
1420
        }
1421
        else
1422
            tcg_out32 (s, MULLW | TAB (args[0], args[1], args[2]));
1423
        break;
1424

    
1425
    case INDEX_op_div_i32:
1426
        tcg_out32 (s, DIVW | TAB (args[0], args[1], args[2]));
1427
        break;
1428

    
1429
    case INDEX_op_divu_i32:
1430
        tcg_out32 (s, DIVWU | TAB (args[0], args[1], args[2]));
1431
        break;
1432

    
1433
    case INDEX_op_rem_i32:
1434
        tcg_out32 (s, DIVW | TAB (0, args[1], args[2]));
1435
        tcg_out32 (s, MULLW | TAB (0, 0, args[2]));
1436
        tcg_out32 (s, SUBF | TAB (args[0], 0, args[1]));
1437
        break;
1438

    
1439
    case INDEX_op_remu_i32:
1440
        tcg_out32 (s, DIVWU | TAB (0, args[1], args[2]));
1441
        tcg_out32 (s, MULLW | TAB (0, 0, args[2]));
1442
        tcg_out32 (s, SUBF | TAB (args[0], 0, args[1]));
1443
        break;
1444

    
1445
    case INDEX_op_shl_i32:
1446
        if (const_args[2]) {
1447
            tcg_out32 (s, (RLWINM
1448
                           | RA (args[0])
1449
                           | RS (args[1])
1450
                           | SH (args[2])
1451
                           | MB (0)
1452
                           | ME (31 - args[2])
1453
                           )
1454
                );
1455
        }
1456
        else
1457
            tcg_out32 (s, SLW | SAB (args[1], args[0], args[2]));
1458
        break;
1459
    case INDEX_op_shr_i32:
1460
        if (const_args[2]) {
1461
            tcg_out32 (s, (RLWINM
1462
                           | RA (args[0])
1463
                           | RS (args[1])
1464
                           | SH (32 - args[2])
1465
                           | MB (args[2])
1466
                           | ME (31)
1467
                           )
1468
                );
1469
        }
1470
        else
1471
            tcg_out32 (s, SRW | SAB (args[1], args[0], args[2]));
1472
        break;
1473
    case INDEX_op_sar_i32:
1474
        if (const_args[2])
1475
            tcg_out32 (s, SRAWI | RS (args[1]) | RA (args[0]) | SH (args[2]));
1476
        else
1477
            tcg_out32 (s, SRAW | SAB (args[1], args[0], args[2]));
1478
        break;
1479

    
1480
    case INDEX_op_brcond_i32:
1481
        tcg_out_brcond (s, args[2], args[0], args[1], const_args[1], args[3], 0);
1482
        break;
1483

    
1484
    case INDEX_op_brcond_i64:
1485
        tcg_out_brcond (s, args[2], args[0], args[1], const_args[1], args[3], 1);
1486
        break;
1487

    
1488
    case INDEX_op_neg_i32:
1489
    case INDEX_op_neg_i64:
1490
        tcg_out32 (s, NEG | RT (args[0]) | RA (args[1]));
1491
        break;
1492

    
1493
    case INDEX_op_not_i32:
1494
    case INDEX_op_not_i64:
1495
        tcg_out32 (s, NOR | SAB (args[1], args[0], args[1]));
1496
        break;
1497

    
1498
    case INDEX_op_add_i64:
1499
        if (const_args[2])
1500
            ppc_addi64 (s, args[0], args[1], args[2]);
1501
        else
1502
            tcg_out32 (s, ADD | TAB (args[0], args[1], args[2]));
1503
        break;
1504
    case INDEX_op_sub_i64:
1505
        if (const_args[2])
1506
            ppc_addi64 (s, args[0], args[1], -args[2]);
1507
        else
1508
            tcg_out32 (s, SUBF | TAB (args[0], args[2], args[1]));
1509
        break;
1510

    
1511
    case INDEX_op_shl_i64:
1512
        if (const_args[2])
1513
            tcg_out_rld (s, RLDICR, args[0], args[1], args[2], 63 - args[2]);
1514
        else
1515
            tcg_out32 (s, SLD | SAB (args[1], args[0], args[2]));
1516
        break;
1517
    case INDEX_op_shr_i64:
1518
        if (const_args[2])
1519
            tcg_out_rld (s, RLDICL, args[0], args[1], 64 - args[2], args[2]);
1520
        else
1521
            tcg_out32 (s, SRD | SAB (args[1], args[0], args[2]));
1522
        break;
1523
    case INDEX_op_sar_i64:
1524
        if (const_args[2]) {
1525
            int sh = SH (args[2] & 0x1f) | (((args[2] >> 5) & 1) << 1);
1526
            tcg_out32 (s, SRADI | RA (args[0]) | RS (args[1]) | sh);
1527
        }
1528
        else
1529
            tcg_out32 (s, SRAD | SAB (args[1], args[0], args[2]));
1530
        break;
1531

    
1532
    case INDEX_op_mul_i64:
1533
        tcg_out32 (s, MULLD | TAB (args[0], args[1], args[2]));
1534
        break;
1535
    case INDEX_op_div_i64:
1536
        tcg_out32 (s, DIVD | TAB (args[0], args[1], args[2]));
1537
        break;
1538
    case INDEX_op_divu_i64:
1539
        tcg_out32 (s, DIVDU | TAB (args[0], args[1], args[2]));
1540
        break;
1541
    case INDEX_op_rem_i64:
1542
        tcg_out32 (s, DIVD | TAB (0, args[1], args[2]));
1543
        tcg_out32 (s, MULLD | TAB (0, 0, args[2]));
1544
        tcg_out32 (s, SUBF | TAB (args[0], 0, args[1]));
1545
        break;
1546
    case INDEX_op_remu_i64:
1547
        tcg_out32 (s, DIVDU | TAB (0, args[1], args[2]));
1548
        tcg_out32 (s, MULLD | TAB (0, 0, args[2]));
1549
        tcg_out32 (s, SUBF | TAB (args[0], 0, args[1]));
1550
        break;
1551

    
1552
    case INDEX_op_qemu_ld8u:
1553
        tcg_out_qemu_ld (s, args, 0);
1554
        break;
1555
    case INDEX_op_qemu_ld8s:
1556
        tcg_out_qemu_ld (s, args, 0 | 4);
1557
        break;
1558
    case INDEX_op_qemu_ld16u:
1559
        tcg_out_qemu_ld (s, args, 1);
1560
        break;
1561
    case INDEX_op_qemu_ld16s:
1562
        tcg_out_qemu_ld (s, args, 1 | 4);
1563
        break;
1564
    case INDEX_op_qemu_ld32:
1565
    case INDEX_op_qemu_ld32u:
1566
        tcg_out_qemu_ld (s, args, 2);
1567
        break;
1568
    case INDEX_op_qemu_ld32s:
1569
        tcg_out_qemu_ld (s, args, 2 | 4);
1570
        break;
1571
    case INDEX_op_qemu_ld64:
1572
        tcg_out_qemu_ld (s, args, 3);
1573
        break;
1574
    case INDEX_op_qemu_st8:
1575
        tcg_out_qemu_st (s, args, 0);
1576
        break;
1577
    case INDEX_op_qemu_st16:
1578
        tcg_out_qemu_st (s, args, 1);
1579
        break;
1580
    case INDEX_op_qemu_st32:
1581
        tcg_out_qemu_st (s, args, 2);
1582
        break;
1583
    case INDEX_op_qemu_st64:
1584
        tcg_out_qemu_st (s, args, 3);
1585
        break;
1586

    
1587
    case INDEX_op_ext8s_i32:
1588
    case INDEX_op_ext8s_i64:
1589
        c = EXTSB;
1590
        goto gen_ext;
1591
    case INDEX_op_ext16s_i32:
1592
    case INDEX_op_ext16s_i64:
1593
        c = EXTSH;
1594
        goto gen_ext;
1595
    case INDEX_op_ext32s_i64:
1596
        c = EXTSW;
1597
        goto gen_ext;
1598
    gen_ext:
1599
        tcg_out32 (s, c | RS (args[1]) | RA (args[0]));
1600
        break;
1601

    
1602
    case INDEX_op_ext32u_i64:
1603
        tcg_out_rld (s, RLDICL, args[0], args[1], 0, 32);
1604
        break;
1605

    
1606
    case INDEX_op_setcond_i32:
1607
        tcg_out_setcond (s, TCG_TYPE_I32, args[3], args[0], args[1], args[2],
1608
                         const_args[2]);
1609
        break;
1610
    case INDEX_op_setcond_i64:
1611
        tcg_out_setcond (s, TCG_TYPE_I64, args[3], args[0], args[1], args[2],
1612
                         const_args[2]);
1613
        break;
1614

    
1615
    default:
1616
        tcg_dump_ops (s);
1617
        tcg_abort ();
1618
    }
1619
}
1620

    
1621
static const TCGTargetOpDef ppc_op_defs[] = {
1622
    { INDEX_op_exit_tb, { } },
1623
    { INDEX_op_goto_tb, { } },
1624
    { INDEX_op_call, { "ri" } },
1625
    { INDEX_op_jmp, { "ri" } },
1626
    { INDEX_op_br, { } },
1627

    
1628
    { INDEX_op_mov_i32, { "r", "r" } },
1629
    { INDEX_op_mov_i64, { "r", "r" } },
1630
    { INDEX_op_movi_i32, { "r" } },
1631
    { INDEX_op_movi_i64, { "r" } },
1632

    
1633
    { INDEX_op_ld8u_i32, { "r", "r" } },
1634
    { INDEX_op_ld8s_i32, { "r", "r" } },
1635
    { INDEX_op_ld16u_i32, { "r", "r" } },
1636
    { INDEX_op_ld16s_i32, { "r", "r" } },
1637
    { INDEX_op_ld_i32, { "r", "r" } },
1638
    { INDEX_op_ld_i64, { "r", "r" } },
1639
    { INDEX_op_st8_i32, { "r", "r" } },
1640
    { INDEX_op_st8_i64, { "r", "r" } },
1641
    { INDEX_op_st16_i32, { "r", "r" } },
1642
    { INDEX_op_st16_i64, { "r", "r" } },
1643
    { INDEX_op_st_i32, { "r", "r" } },
1644
    { INDEX_op_st_i64, { "r", "r" } },
1645
    { INDEX_op_st32_i64, { "r", "r" } },
1646

    
1647
    { INDEX_op_ld8u_i64, { "r", "r" } },
1648
    { INDEX_op_ld8s_i64, { "r", "r" } },
1649
    { INDEX_op_ld16u_i64, { "r", "r" } },
1650
    { INDEX_op_ld16s_i64, { "r", "r" } },
1651
    { INDEX_op_ld32u_i64, { "r", "r" } },
1652
    { INDEX_op_ld32s_i64, { "r", "r" } },
1653

    
1654
    { INDEX_op_add_i32, { "r", "r", "ri" } },
1655
    { INDEX_op_mul_i32, { "r", "r", "ri" } },
1656
    { INDEX_op_div_i32, { "r", "r", "r" } },
1657
    { INDEX_op_divu_i32, { "r", "r", "r" } },
1658
    { INDEX_op_rem_i32, { "r", "r", "r" } },
1659
    { INDEX_op_remu_i32, { "r", "r", "r" } },
1660
    { INDEX_op_sub_i32, { "r", "r", "ri" } },
1661
    { INDEX_op_and_i32, { "r", "r", "ri" } },
1662
    { INDEX_op_or_i32, { "r", "r", "ri" } },
1663
    { INDEX_op_xor_i32, { "r", "r", "ri" } },
1664

    
1665
    { INDEX_op_shl_i32, { "r", "r", "ri" } },
1666
    { INDEX_op_shr_i32, { "r", "r", "ri" } },
1667
    { INDEX_op_sar_i32, { "r", "r", "ri" } },
1668

    
1669
    { INDEX_op_brcond_i32, { "r", "ri" } },
1670
    { INDEX_op_brcond_i64, { "r", "ri" } },
1671

    
1672
    { INDEX_op_neg_i32, { "r", "r" } },
1673
    { INDEX_op_not_i32, { "r", "r" } },
1674

    
1675
    { INDEX_op_add_i64, { "r", "r", "ri" } },
1676
    { INDEX_op_sub_i64, { "r", "r", "ri" } },
1677
    { INDEX_op_and_i64, { "r", "r", "rZ" } },
1678
    { INDEX_op_or_i64, { "r", "r", "rZ" } },
1679
    { INDEX_op_xor_i64, { "r", "r", "rZ" } },
1680

    
1681
    { INDEX_op_shl_i64, { "r", "r", "ri" } },
1682
    { INDEX_op_shr_i64, { "r", "r", "ri" } },
1683
    { INDEX_op_sar_i64, { "r", "r", "ri" } },
1684

    
1685
    { INDEX_op_mul_i64, { "r", "r", "r" } },
1686
    { INDEX_op_div_i64, { "r", "r", "r" } },
1687
    { INDEX_op_divu_i64, { "r", "r", "r" } },
1688
    { INDEX_op_rem_i64, { "r", "r", "r" } },
1689
    { INDEX_op_remu_i64, { "r", "r", "r" } },
1690

    
1691
    { INDEX_op_neg_i64, { "r", "r" } },
1692
    { INDEX_op_not_i64, { "r", "r" } },
1693

    
1694
    { INDEX_op_qemu_ld8u, { "r", "L" } },
1695
    { INDEX_op_qemu_ld8s, { "r", "L" } },
1696
    { INDEX_op_qemu_ld16u, { "r", "L" } },
1697
    { INDEX_op_qemu_ld16s, { "r", "L" } },
1698
    { INDEX_op_qemu_ld32, { "r", "L" } },
1699
    { INDEX_op_qemu_ld32u, { "r", "L" } },
1700
    { INDEX_op_qemu_ld32s, { "r", "L" } },
1701
    { INDEX_op_qemu_ld64, { "r", "L" } },
1702

    
1703
    { INDEX_op_qemu_st8, { "S", "S" } },
1704
    { INDEX_op_qemu_st16, { "S", "S" } },
1705
    { INDEX_op_qemu_st32, { "S", "S" } },
1706
    { INDEX_op_qemu_st64, { "S", "S" } },
1707

    
1708
    { INDEX_op_ext8s_i32, { "r", "r" } },
1709
    { INDEX_op_ext16s_i32, { "r", "r" } },
1710
    { INDEX_op_ext8s_i64, { "r", "r" } },
1711
    { INDEX_op_ext16s_i64, { "r", "r" } },
1712
    { INDEX_op_ext32s_i64, { "r", "r" } },
1713
    { INDEX_op_ext32u_i64, { "r", "r" } },
1714

    
1715
    { INDEX_op_setcond_i32, { "r", "r", "ri" } },
1716
    { INDEX_op_setcond_i64, { "r", "r", "ri" } },
1717

    
1718
    { -1 },
1719
};
1720

    
1721
static void tcg_target_init (TCGContext *s)
1722
{
1723
    tcg_regset_set32 (tcg_target_available_regs[TCG_TYPE_I32], 0, 0xffffffff);
1724
    tcg_regset_set32 (tcg_target_available_regs[TCG_TYPE_I64], 0, 0xffffffff);
1725
    tcg_regset_set32 (tcg_target_call_clobber_regs, 0,
1726
                     (1 << TCG_REG_R0) |
1727
#ifdef __APPLE__
1728
                     (1 << TCG_REG_R2) |
1729
#endif
1730
                     (1 << TCG_REG_R3) |
1731
                     (1 << TCG_REG_R4) |
1732
                     (1 << TCG_REG_R5) |
1733
                     (1 << TCG_REG_R6) |
1734
                     (1 << TCG_REG_R7) |
1735
                     (1 << TCG_REG_R8) |
1736
                     (1 << TCG_REG_R9) |
1737
                     (1 << TCG_REG_R10) |
1738
                     (1 << TCG_REG_R11) |
1739
                     (1 << TCG_REG_R12)
1740
        );
1741

    
1742
    tcg_regset_clear (s->reserved_regs);
1743
    tcg_regset_set_reg (s->reserved_regs, TCG_REG_R0);
1744
    tcg_regset_set_reg (s->reserved_regs, TCG_REG_R1);
1745
#ifndef __APPLE__
1746
    tcg_regset_set_reg (s->reserved_regs, TCG_REG_R2);
1747
#endif
1748
    tcg_regset_set_reg (s->reserved_regs, TCG_REG_R13);
1749

    
1750
    tcg_add_target_add_op_defs (ppc_op_defs);
1751
}