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1
/*
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 * Tiny Code Generator for QEMU
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 *
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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_PHYS_ADDR_BITS == 32
32
#define LD_ADDEND LWZ
33
#else
34
#define LD_ADDEND LD
35
#endif
36

    
37
#if TARGET_LONG_BITS == 32
38
#define LD_ADDR LWZU
39
#define CMP_L 0
40
#else
41
#define LD_ADDR LDU
42
#define CMP_L (1<<21)
43
#endif
44

    
45
#ifndef GUEST_BASE
46
#define GUEST_BASE 0
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#endif
48

    
49
#ifdef CONFIG_USE_GUEST_BASE
50
#define TCG_GUEST_BASE_REG 30
51
#else
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#define TCG_GUEST_BASE_REG 0
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#endif
54

    
55
#ifndef NDEBUG
56
static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
57
    "r0",
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    "r1",
59
    "rp",
60
    "r3",
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    "r4",
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    "r5",
63
    "r6",
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    "r7",
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    "r8",
66
    "r9",
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    "r10",
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    "r11",
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    "r12",
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    "r13",
71
    "r14",
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    "r15",
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    "r16",
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    "r17",
75
    "r18",
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    "r19",
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    "r20",
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    "r21",
79
    "r22",
80
    "r23",
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    "r24",
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    "r25",
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    "r26",
84
    "r27",
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    "r28",
86
    "r29",
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    "r30",
88
    "r31"
89
};
90
#endif
91

    
92
static const int tcg_target_reg_alloc_order[] = {
93
    TCG_REG_R14,
94
    TCG_REG_R15,
95
    TCG_REG_R16,
96
    TCG_REG_R17,
97
    TCG_REG_R18,
98
    TCG_REG_R19,
99
    TCG_REG_R20,
100
    TCG_REG_R21,
101
    TCG_REG_R22,
102
    TCG_REG_R23,
103
    TCG_REG_R28,
104
    TCG_REG_R29,
105
    TCG_REG_R30,
106
    TCG_REG_R31,
107
#ifdef __APPLE__
108
    TCG_REG_R2,
109
#endif
110
    TCG_REG_R3,
111
    TCG_REG_R4,
112
    TCG_REG_R5,
113
    TCG_REG_R6,
114
    TCG_REG_R7,
115
    TCG_REG_R8,
116
    TCG_REG_R9,
117
    TCG_REG_R10,
118
#ifndef __APPLE__
119
    TCG_REG_R11,
120
#endif
121
    TCG_REG_R12,
122
    TCG_REG_R24,
123
    TCG_REG_R25,
124
    TCG_REG_R26,
125
    TCG_REG_R27
126
};
127

    
128
static const int tcg_target_call_iarg_regs[] = {
129
    TCG_REG_R3,
130
    TCG_REG_R4,
131
    TCG_REG_R5,
132
    TCG_REG_R6,
133
    TCG_REG_R7,
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    TCG_REG_R8,
135
    TCG_REG_R9,
136
    TCG_REG_R10
137
};
138

    
139
static const int tcg_target_call_oarg_regs[2] = {
140
    TCG_REG_R3
141
};
142

    
143
static const int tcg_target_callee_save_regs[] = {
144
#ifdef __APPLE__
145
    TCG_REG_R11,
146
#endif
147
    TCG_REG_R14,
148
    TCG_REG_R15,
149
    TCG_REG_R16,
150
    TCG_REG_R17,
151
    TCG_REG_R18,
152
    TCG_REG_R19,
153
    TCG_REG_R20,
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    TCG_REG_R21,
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    TCG_REG_R22,
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    TCG_REG_R23,
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    TCG_REG_R24,
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    TCG_REG_R25,
159
    TCG_REG_R26,
160
    /* TCG_REG_R27, */ /* currently used for the global env, so no
161
                          need to save */
162
    TCG_REG_R28,
163
    TCG_REG_R29,
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    TCG_REG_R30,
165
    TCG_REG_R31
166
};
167

    
168
static uint32_t reloc_pc24_val (void *pc, tcg_target_long target)
169
{
170
    tcg_target_long disp;
171

    
172
    disp = target - (tcg_target_long) pc;
173
    if ((disp << 38) >> 38 != disp)
174
        tcg_abort ();
175

    
176
    return disp & 0x3fffffc;
177
}
178

    
179
static void reloc_pc24 (void *pc, tcg_target_long target)
180
{
181
    *(uint32_t *) pc = (*(uint32_t *) pc & ~0x3fffffc)
182
        | reloc_pc24_val (pc, target);
183
}
184

    
185
static uint16_t reloc_pc14_val (void *pc, tcg_target_long target)
186
{
187
    tcg_target_long disp;
188

    
189
    disp = target - (tcg_target_long) pc;
190
    if (disp != (int16_t) disp)
191
        tcg_abort ();
192

    
193
    return disp & 0xfffc;
194
}
195

    
196
static void reloc_pc14 (void *pc, tcg_target_long target)
197
{
198
    *(uint32_t *) pc = (*(uint32_t *) pc & ~0xfffc)
199
        | reloc_pc14_val (pc, target);
200
}
201

    
202
static void patch_reloc (uint8_t *code_ptr, int type,
203
                         tcg_target_long value, tcg_target_long addend)
204
{
205
    value += addend;
206
    switch (type) {
207
    case R_PPC_REL14:
208
        reloc_pc14 (code_ptr, value);
209
        break;
210
    case R_PPC_REL24:
211
        reloc_pc24 (code_ptr, value);
212
        break;
213
    default:
214
        tcg_abort ();
215
    }
216
}
217

    
218
/* maximum number of register used for input function arguments */
219
static int tcg_target_get_call_iarg_regs_count (int flags)
220
{
221
    return ARRAY_SIZE (tcg_target_call_iarg_regs);
222
}
223

    
224
/* parse target specific constraints */
225
static int target_parse_constraint (TCGArgConstraint *ct, const char **pct_str)
226
{
227
    const char *ct_str;
228

    
229
    ct_str = *pct_str;
230
    switch (ct_str[0]) {
231
    case 'A': case 'B': case 'C': case 'D':
232
        ct->ct |= TCG_CT_REG;
233
        tcg_regset_set_reg (ct->u.regs, 3 + ct_str[0] - 'A');
234
        break;
235
    case 'r':
236
        ct->ct |= TCG_CT_REG;
237
        tcg_regset_set32 (ct->u.regs, 0, 0xffffffff);
238
        break;
239
    case 'L':                   /* qemu_ld constraint */
240
        ct->ct |= TCG_CT_REG;
241
        tcg_regset_set32 (ct->u.regs, 0, 0xffffffff);
242
        tcg_regset_reset_reg (ct->u.regs, TCG_REG_R3);
243
#ifdef CONFIG_SOFTMMU
244
        tcg_regset_reset_reg (ct->u.regs, TCG_REG_R4);
245
#endif
246
        break;
247
    case 'S':                   /* qemu_st constraint */
248
        ct->ct |= TCG_CT_REG;
249
        tcg_regset_set32 (ct->u.regs, 0, 0xffffffff);
250
        tcg_regset_reset_reg (ct->u.regs, TCG_REG_R3);
251
#ifdef CONFIG_SOFTMMU
252
        tcg_regset_reset_reg (ct->u.regs, TCG_REG_R4);
253
        tcg_regset_reset_reg (ct->u.regs, TCG_REG_R5);
254
#endif
255
        break;
256
    case 'Z':
257
        ct->ct |= TCG_CT_CONST_U32;
258
        break;
259
    default:
260
        return -1;
261
    }
262
    ct_str++;
263
    *pct_str = ct_str;
264
    return 0;
265
}
266

    
267
/* test if a constant matches the constraint */
268
static int tcg_target_const_match (tcg_target_long val,
269
                                   const TCGArgConstraint *arg_ct)
270
{
271
    int ct;
272

    
273
    ct = arg_ct->ct;
274
    if (ct & TCG_CT_CONST)
275
        return 1;
276
    else if ((ct & TCG_CT_CONST_U32) && (val == (uint32_t) val))
277
        return 1;
278
    return 0;
279
}
280

    
281
#define OPCD(opc) ((opc)<<26)
282
#define XO19(opc) (OPCD(19)|((opc)<<1))
283
#define XO30(opc) (OPCD(30)|((opc)<<2))
284
#define XO31(opc) (OPCD(31)|((opc)<<1))
285
#define XO58(opc) (OPCD(58)|(opc))
286
#define XO62(opc) (OPCD(62)|(opc))
287

    
288
#define B      OPCD( 18)
289
#define BC     OPCD( 16)
290
#define LBZ    OPCD( 34)
291
#define LHZ    OPCD( 40)
292
#define LHA    OPCD( 42)
293
#define LWZ    OPCD( 32)
294
#define STB    OPCD( 38)
295
#define STH    OPCD( 44)
296
#define STW    OPCD( 36)
297

    
298
#define STD    XO62(  0)
299
#define STDU   XO62(  1)
300
#define STDX   XO31(149)
301

    
302
#define LD     XO58(  0)
303
#define LDX    XO31( 21)
304
#define LDU    XO58(  1)
305
#define LWA    XO58(  2)
306
#define LWAX   XO31(341)
307

    
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

    
336
#define EXTSB  XO31(954)
337
#define EXTSH  XO31(922)
338
#define EXTSW  XO31(986)
339
#define ADD    XO31(266)
340
#define ADDE   XO31(138)
341
#define ADDC   XO31( 10)
342
#define AND    XO31( 28)
343
#define SUBF   XO31( 40)
344
#define SUBFC  XO31(  8)
345
#define SUBFE  XO31(136)
346
#define OR     XO31(444)
347
#define XOR    XO31(316)
348
#define MULLW  XO31(235)
349
#define MULHWU XO31( 11)
350
#define DIVW   XO31(491)
351
#define DIVWU  XO31(459)
352
#define CMP    XO31(  0)
353
#define CMPL   XO31( 32)
354
#define LHBRX  XO31(790)
355
#define LWBRX  XO31(534)
356
#define STHBRX XO31(918)
357
#define STWBRX XO31(662)
358
#define MFSPR  XO31(339)
359
#define MTSPR  XO31(467)
360
#define SRAWI  XO31(824)
361
#define NEG    XO31(104)
362

    
363
#define MULLD  XO31(233)
364
#define MULHD  XO31( 73)
365
#define MULHDU XO31(  9)
366
#define DIVD   XO31(489)
367
#define DIVDU  XO31(457)
368

    
369
#define LBZX   XO31( 87)
370
#define LHZX   XO31(279)
371
#define LHAX   XO31(343)
372
#define LWZX   XO31( 23)
373
#define STBX   XO31(215)
374
#define STHX   XO31(407)
375
#define STWX   XO31(151)
376

    
377
#define SPR(a,b) ((((a)<<5)|(b))<<11)
378
#define LR     SPR(8, 0)
379
#define CTR    SPR(9, 0)
380

    
381
#define SLW    XO31( 24)
382
#define SRW    XO31(536)
383
#define SRAW   XO31(792)
384

    
385
#define SLD    XO31( 27)
386
#define SRD    XO31(539)
387
#define SRAD   XO31(794)
388
#define SRADI  XO31(413<<1)
389

    
390
#define TW     XO31( 4)
391
#define TRAP   (TW | TO (31))
392

    
393
#define RT(r) ((r)<<21)
394
#define RS(r) ((r)<<21)
395
#define RA(r) ((r)<<16)
396
#define RB(r) ((r)<<11)
397
#define TO(t) ((t)<<21)
398
#define SH(s) ((s)<<11)
399
#define MB(b) ((b)<<6)
400
#define ME(e) ((e)<<1)
401
#define BO(o) ((o)<<21)
402
#define MB64(b) ((b)<<5)
403

    
404
#define LK    1
405

    
406
#define TAB(t,a,b) (RT(t) | RA(a) | RB(b))
407
#define SAB(s,a,b) (RS(s) | RA(a) | RB(b))
408

    
409
#define BF(n)    ((n)<<23)
410
#define BI(n, c) (((c)+((n)*4))<<16)
411
#define BT(n, c) (((c)+((n)*4))<<21)
412
#define BA(n, c) (((c)+((n)*4))<<16)
413
#define BB(n, c) (((c)+((n)*4))<<11)
414

    
415
#define BO_COND_TRUE  BO (12)
416
#define BO_COND_FALSE BO ( 4)
417
#define BO_ALWAYS     BO (20)
418

    
419
enum {
420
    CR_LT,
421
    CR_GT,
422
    CR_EQ,
423
    CR_SO
424
};
425

    
426
static const uint32_t tcg_to_bc[10] = {
427
    [TCG_COND_EQ]  = BC | BI (7, CR_EQ) | BO_COND_TRUE,
428
    [TCG_COND_NE]  = BC | BI (7, CR_EQ) | BO_COND_FALSE,
429
    [TCG_COND_LT]  = BC | BI (7, CR_LT) | BO_COND_TRUE,
430
    [TCG_COND_GE]  = BC | BI (7, CR_LT) | BO_COND_FALSE,
431
    [TCG_COND_LE]  = BC | BI (7, CR_GT) | BO_COND_FALSE,
432
    [TCG_COND_GT]  = BC | BI (7, CR_GT) | BO_COND_TRUE,
433
    [TCG_COND_LTU] = BC | BI (7, CR_LT) | BO_COND_TRUE,
434
    [TCG_COND_GEU] = BC | BI (7, CR_LT) | BO_COND_FALSE,
435
    [TCG_COND_LEU] = BC | BI (7, CR_GT) | BO_COND_FALSE,
436
    [TCG_COND_GTU] = BC | BI (7, CR_GT) | BO_COND_TRUE,
437
};
438

    
439
static void tcg_out_mov (TCGContext *s, int ret, int arg)
440
{
441
    tcg_out32 (s, OR | SAB (arg, ret, arg));
442
}
443

    
444
static void tcg_out_rld (TCGContext *s, int op, int ra, int rs, int sh, int mb)
445
{
446
    sh = SH (sh & 0x1f) | (((sh >> 5) & 1) << 1);
447
    mb = MB64 ((mb >> 5) | ((mb << 1) & 0x3f));
448
    tcg_out32 (s, op | RA (ra) | RS (rs) | sh | mb);
449
}
450

    
451
static void tcg_out_movi32 (TCGContext *s, int ret, int32_t arg)
452
{
453
    if (arg == (int16_t) arg)
454
        tcg_out32 (s, ADDI | RT (ret) | RA (0) | (arg & 0xffff));
455
    else {
456
        tcg_out32 (s, ADDIS | RT (ret) | RA (0) | ((arg >> 16) & 0xffff));
457
        if (arg & 0xffff)
458
            tcg_out32 (s, ORI | RS (ret) | RA (ret) | (arg & 0xffff));
459
    }
460
}
461

    
462
static void tcg_out_movi (TCGContext *s, TCGType type,
463
                          int ret, tcg_target_long arg)
464
{
465
    int32_t arg32 = arg;
466

    
467
    if (type == TCG_TYPE_I32 || 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

    
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

    
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

    
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

    
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

    
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

    
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, 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, 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_ADDEND
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

    
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, 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_ADDEND
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

    
863
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
    tcg_out_movi (s, TCG_TYPE_I64, TCG_GUEST_BASE_REG, GUEST_BASE);
903
#endif
904

    
905
    tcg_out32 (s, MTSPR | RS (3) | CTR);
906
    tcg_out32 (s, BCCTR | BO_ALWAYS);
907

    
908
    /* Epilogue */
909
    tb_ret_addr = s->code_ptr;
910

    
911
    for (i = 0; i < ARRAY_SIZE (tcg_target_callee_save_regs); ++i)
912
        tcg_out32 (s, (LD
913
                       | RT (tcg_target_callee_save_regs[i])
914
                       | RA (1)
915
                       | (i * 8 + 48 + TCG_STATIC_CALL_ARGS_SIZE)
916
                       )
917
            );
918
    tcg_out32 (s, LD | RT (0) | RA (1) | (frame_size + 16));
919
    tcg_out32 (s, MTSPR | RS (0) | LR);
920
    tcg_out32 (s, ADDI | RT (1) | RA (1) | frame_size);
921
    tcg_out32 (s, BCLR | BO_ALWAYS);
922
}
923

    
924
static void tcg_out_ld (TCGContext *s, TCGType type, int ret, int arg1,
925
                        tcg_target_long arg2)
926
{
927
    if (type == TCG_TYPE_I32)
928
        tcg_out_ldst (s, ret, arg1, arg2, LWZ, LWZX);
929
    else
930
        tcg_out_ldsta (s, ret, arg1, arg2, LD, LDX);
931
}
932

    
933
static void tcg_out_st (TCGContext *s, TCGType type, int arg, int arg1,
934
                        tcg_target_long arg2)
935
{
936
    if (type == TCG_TYPE_I32)
937
        tcg_out_ldst (s, arg, arg1, arg2, STW, STWX);
938
    else
939
        tcg_out_ldsta (s, arg, arg1, arg2, STD, STDX);
940
}
941

    
942
static void ppc_addi32 (TCGContext *s, int rt, int ra, tcg_target_long si)
943
{
944
    if (!si && rt == ra)
945
        return;
946

    
947
    if (si == (int16_t) si)
948
        tcg_out32 (s, ADDI | RT (rt) | RA (ra) | (si & 0xffff));
949
    else {
950
        uint16_t h = ((si >> 16) & 0xffff) + ((uint16_t) si >> 15);
951
        tcg_out32 (s, ADDIS | RT (rt) | RA (ra) | h);
952
        tcg_out32 (s, ADDI | RT (rt) | RA (rt) | (si & 0xffff));
953
    }
954
}
955

    
956
static void ppc_addi64 (TCGContext *s, int rt, int ra, tcg_target_long si)
957
{
958
    /* XXX: suboptimal */
959
    if (si == (int16_t) si
960
        || ((((uint64_t) si >> 31) == 0) && (si & 0x8000) == 0))
961
        ppc_addi32 (s, rt, ra, si);
962
    else {
963
        tcg_out_movi (s, TCG_TYPE_I64, 0, si);
964
        tcg_out32 (s, ADD | RT (rt) | RA (ra));
965
    }
966
}
967

    
968
static void tcg_out_addi (TCGContext *s, int reg, tcg_target_long val)
969
{
970
    ppc_addi64 (s, reg, reg, val);
971
}
972

    
973
static void tcg_out_cmp (TCGContext *s, int cond, TCGArg arg1, TCGArg arg2,
974
                         int const_arg2, int cr, int arch64)
975
{
976
    int imm;
977
    uint32_t op;
978

    
979
    switch (cond) {
980
    case TCG_COND_EQ:
981
    case TCG_COND_NE:
982
        if (const_arg2) {
983
            if ((int16_t) arg2 == arg2) {
984
                op = CMPI;
985
                imm = 1;
986
                break;
987
            }
988
            else if ((uint16_t) arg2 == arg2) {
989
                op = CMPLI;
990
                imm = 1;
991
                break;
992
            }
993
        }
994
        op = CMPL;
995
        imm = 0;
996
        break;
997

    
998
    case TCG_COND_LT:
999
    case TCG_COND_GE:
1000
    case TCG_COND_LE:
1001
    case TCG_COND_GT:
1002
        if (const_arg2) {
1003
            if ((int16_t) arg2 == arg2) {
1004
                op = CMPI;
1005
                imm = 1;
1006
                break;
1007
            }
1008
        }
1009
        op = CMP;
1010
        imm = 0;
1011
        break;
1012

    
1013
    case TCG_COND_LTU:
1014
    case TCG_COND_GEU:
1015
    case TCG_COND_LEU:
1016
    case TCG_COND_GTU:
1017
        if (const_arg2) {
1018
            if ((uint16_t) arg2 == arg2) {
1019
                op = CMPLI;
1020
                imm = 1;
1021
                break;
1022
            }
1023
        }
1024
        op = CMPL;
1025
        imm = 0;
1026
        break;
1027

    
1028
    default:
1029
        tcg_abort ();
1030
    }
1031
    op |= BF (cr) | (arch64 << 21);
1032

    
1033
    if (imm)
1034
        tcg_out32 (s, op | RA (arg1) | (arg2 & 0xffff));
1035
    else {
1036
        if (const_arg2) {
1037
            tcg_out_movi (s, TCG_TYPE_I64, 0, arg2);
1038
            tcg_out32 (s, op | RA (arg1) | RB (0));
1039
        }
1040
        else
1041
            tcg_out32 (s, op | RA (arg1) | RB (arg2));
1042
    }
1043

    
1044
}
1045

    
1046
static void tcg_out_bc (TCGContext *s, int bc, int label_index)
1047
{
1048
    TCGLabel *l = &s->labels[label_index];
1049

    
1050
    if (l->has_value)
1051
        tcg_out32 (s, bc | reloc_pc14_val (s->code_ptr, l->u.value));
1052
    else {
1053
        uint16_t val = *(uint16_t *) &s->code_ptr[2];
1054

    
1055
        /* Thanks to Andrzej Zaborowski */
1056
        tcg_out32 (s, bc | (val & 0xfffc));
1057
        tcg_out_reloc (s, s->code_ptr - 4, R_PPC_REL14, label_index, 0);
1058
    }
1059
}
1060

    
1061
static void tcg_out_brcond (TCGContext *s, int cond,
1062
                            TCGArg arg1, TCGArg arg2, int const_arg2,
1063
                            int label_index, int arch64)
1064
{
1065
    tcg_out_cmp (s, cond, arg1, arg2, const_arg2, 7, arch64);
1066
    tcg_out_bc (s, tcg_to_bc[cond], label_index);
1067
}
1068

    
1069
void ppc_tb_set_jmp_target (unsigned long jmp_addr, unsigned long addr)
1070
{
1071
    TCGContext s;
1072
    unsigned long patch_size;
1073

    
1074
    s.code_ptr = (uint8_t *) jmp_addr;
1075
    tcg_out_b (&s, 0, addr);
1076
    patch_size = s.code_ptr - (uint8_t *) jmp_addr;
1077
    flush_icache_range (jmp_addr, jmp_addr + patch_size);
1078
}
1079

    
1080
static void tcg_out_op (TCGContext *s, int opc, const TCGArg *args,
1081
                        const int *const_args)
1082
{
1083
    int c;
1084

    
1085
    switch (opc) {
1086
    case INDEX_op_exit_tb:
1087
        tcg_out_movi (s, TCG_TYPE_I64, TCG_REG_R3, args[0]);
1088
        tcg_out_b (s, 0, (tcg_target_long) tb_ret_addr);
1089
        break;
1090
    case INDEX_op_goto_tb:
1091
        if (s->tb_jmp_offset) {
1092
            /* direct jump method */
1093

    
1094
            s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf;
1095
            s->code_ptr += 28;
1096
        }
1097
        else {
1098
            tcg_abort ();
1099
        }
1100
        s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf;
1101
        break;
1102
    case INDEX_op_br:
1103
        {
1104
            TCGLabel *l = &s->labels[args[0]];
1105

    
1106
            if (l->has_value) {
1107
                tcg_out_b (s, 0, l->u.value);
1108
            }
1109
            else {
1110
                uint32_t val = *(uint32_t *) s->code_ptr;
1111

    
1112
                /* Thanks to Andrzej Zaborowski */
1113
                tcg_out32 (s, B | (val & 0x3fffffc));
1114
                tcg_out_reloc (s, s->code_ptr - 4, R_PPC_REL24, args[0], 0);
1115
            }
1116
        }
1117
        break;
1118
    case INDEX_op_call:
1119
        tcg_out_call (s, args[0], const_args[0]);
1120
        break;
1121
    case INDEX_op_jmp:
1122
        if (const_args[0]) {
1123
            tcg_out_b (s, 0, args[0]);
1124
        }
1125
        else {
1126
            tcg_out32 (s, MTSPR | RS (args[0]) | CTR);
1127
            tcg_out32 (s, BCCTR | BO_ALWAYS);
1128
        }
1129
        break;
1130
    case INDEX_op_movi_i32:
1131
        tcg_out_movi (s, TCG_TYPE_I32, args[0], args[1]);
1132
        break;
1133
    case INDEX_op_movi_i64:
1134
        tcg_out_movi (s, TCG_TYPE_I64, args[0], args[1]);
1135
        break;
1136
    case INDEX_op_ld8u_i32:
1137
    case INDEX_op_ld8u_i64:
1138
        tcg_out_ldst (s, args[0], args[1], args[2], LBZ, LBZX);
1139
        break;
1140
    case INDEX_op_ld8s_i32:
1141
    case INDEX_op_ld8s_i64:
1142
        tcg_out_ldst (s, args[0], args[1], args[2], LBZ, LBZX);
1143
        tcg_out32 (s, EXTSB | RS (args[0]) | RA (args[0]));
1144
        break;
1145
    case INDEX_op_ld16u_i32:
1146
    case INDEX_op_ld16u_i64:
1147
        tcg_out_ldst (s, args[0], args[1], args[2], LHZ, LHZX);
1148
        break;
1149
    case INDEX_op_ld16s_i32:
1150
    case INDEX_op_ld16s_i64:
1151
        tcg_out_ldst (s, args[0], args[1], args[2], LHA, LHAX);
1152
        break;
1153
    case INDEX_op_ld_i32:
1154
    case INDEX_op_ld32u_i64:
1155
        tcg_out_ldst (s, args[0], args[1], args[2], LWZ, LWZX);
1156
        break;
1157
    case INDEX_op_ld32s_i64:
1158
        tcg_out_ldsta (s, args[0], args[1], args[2], LWA, LWAX);
1159
        break;
1160
    case INDEX_op_ld_i64:
1161
        tcg_out_ldsta (s, args[0], args[1], args[2], LD, LDX);
1162
        break;
1163
    case INDEX_op_st8_i32:
1164
    case INDEX_op_st8_i64:
1165
        tcg_out_ldst (s, args[0], args[1], args[2], STB, STBX);
1166
        break;
1167
    case INDEX_op_st16_i32:
1168
    case INDEX_op_st16_i64:
1169
        tcg_out_ldst (s, args[0], args[1], args[2], STH, STHX);
1170
        break;
1171
    case INDEX_op_st_i32:
1172
    case INDEX_op_st32_i64:
1173
        tcg_out_ldst (s, args[0], args[1], args[2], STW, STWX);
1174
        break;
1175
    case INDEX_op_st_i64:
1176
        tcg_out_ldsta (s, args[0], args[1], args[2], STD, STDX);
1177
        break;
1178

    
1179
    case INDEX_op_add_i32:
1180
        if (const_args[2])
1181
            ppc_addi32 (s, args[0], args[1], args[2]);
1182
        else
1183
            tcg_out32 (s, ADD | TAB (args[0], args[1], args[2]));
1184
        break;
1185
    case INDEX_op_sub_i32:
1186
        if (const_args[2])
1187
            ppc_addi32 (s, args[0], args[1], -args[2]);
1188
        else
1189
            tcg_out32 (s, SUBF | TAB (args[0], args[2], args[1]));
1190
        break;
1191

    
1192
    case INDEX_op_and_i64:
1193
    case INDEX_op_and_i32:
1194
        if (const_args[2]) {
1195
            if ((args[2] & 0xffff) == args[2])
1196
                tcg_out32 (s, ANDI | RS (args[1]) | RA (args[0]) | args[2]);
1197
            else if ((args[2] & 0xffff0000) == args[2])
1198
                tcg_out32 (s, ANDIS | RS (args[1]) | RA (args[0])
1199
                           | ((args[2] >> 16) & 0xffff));
1200
            else {
1201
                tcg_out_movi (s, (opc == INDEX_op_and_i32
1202
                                  ? TCG_TYPE_I32
1203
                                  : TCG_TYPE_I64),
1204
                              0, args[2]);
1205
                tcg_out32 (s, AND | SAB (args[1], args[0], 0));
1206
            }
1207
        }
1208
        else
1209
            tcg_out32 (s, AND | SAB (args[1], args[0], args[2]));
1210
        break;
1211
    case INDEX_op_or_i64:
1212
    case INDEX_op_or_i32:
1213
        if (const_args[2]) {
1214
            if (args[2] & 0xffff) {
1215
                tcg_out32 (s, ORI | RS (args[1]) | RA (args[0])
1216
                           | (args[2] & 0xffff));
1217
                if (args[2] >> 16)
1218
                    tcg_out32 (s, ORIS | RS (args[0])  | RA (args[0])
1219
                               | ((args[2] >> 16) & 0xffff));
1220
            }
1221
            else {
1222
                tcg_out32 (s, ORIS | RS (args[1])  | RA (args[0])
1223
                           | ((args[2] >> 16) & 0xffff));
1224
            }
1225
        }
1226
        else
1227
            tcg_out32 (s, OR | SAB (args[1], args[0], args[2]));
1228
        break;
1229
    case INDEX_op_xor_i64:
1230
    case INDEX_op_xor_i32:
1231
        if (const_args[2]) {
1232
            if ((args[2] & 0xffff) == args[2])
1233
                tcg_out32 (s, XORI | RS (args[1])  | RA (args[0])
1234
                           | (args[2] & 0xffff));
1235
            else if ((args[2] & 0xffff0000) == args[2])
1236
                tcg_out32 (s, XORIS | RS (args[1])  | RA (args[0])
1237
                           | ((args[2] >> 16) & 0xffff));
1238
            else {
1239
                tcg_out_movi (s, (opc == INDEX_op_and_i32
1240
                                  ? TCG_TYPE_I32
1241
                                  : TCG_TYPE_I64),
1242
                              0, args[2]);
1243
                tcg_out32 (s, XOR | SAB (args[1], args[0], 0));
1244
            }
1245
        }
1246
        else
1247
            tcg_out32 (s, XOR | SAB (args[1], args[0], args[2]));
1248
        break;
1249

    
1250
    case INDEX_op_mul_i32:
1251
        if (const_args[2]) {
1252
            if (args[2] == (int16_t) args[2])
1253
                tcg_out32 (s, MULLI | RT (args[0]) | RA (args[1])
1254
                           | (args[2] & 0xffff));
1255
            else {
1256
                tcg_out_movi (s, TCG_TYPE_I32, 0, args[2]);
1257
                tcg_out32 (s, MULLW | TAB (args[0], args[1], 0));
1258
            }
1259
        }
1260
        else
1261
            tcg_out32 (s, MULLW | TAB (args[0], args[1], args[2]));
1262
        break;
1263

    
1264
    case INDEX_op_div_i32:
1265
        tcg_out32 (s, DIVW | TAB (args[0], args[1], args[2]));
1266
        break;
1267

    
1268
    case INDEX_op_divu_i32:
1269
        tcg_out32 (s, DIVWU | TAB (args[0], args[1], args[2]));
1270
        break;
1271

    
1272
    case INDEX_op_rem_i32:
1273
        tcg_out32 (s, DIVW | TAB (0, args[1], args[2]));
1274
        tcg_out32 (s, MULLW | TAB (0, 0, args[2]));
1275
        tcg_out32 (s, SUBF | TAB (args[0], 0, args[1]));
1276
        break;
1277

    
1278
    case INDEX_op_remu_i32:
1279
        tcg_out32 (s, DIVWU | TAB (0, args[1], args[2]));
1280
        tcg_out32 (s, MULLW | TAB (0, 0, args[2]));
1281
        tcg_out32 (s, SUBF | TAB (args[0], 0, args[1]));
1282
        break;
1283

    
1284
    case INDEX_op_shl_i32:
1285
        if (const_args[2]) {
1286
            tcg_out32 (s, (RLWINM
1287
                           | RA (args[0])
1288
                           | RS (args[1])
1289
                           | SH (args[2])
1290
                           | MB (0)
1291
                           | ME (31 - args[2])
1292
                           )
1293
                );
1294
        }
1295
        else
1296
            tcg_out32 (s, SLW | SAB (args[1], args[0], args[2]));
1297
        break;
1298
    case INDEX_op_shr_i32:
1299
        if (const_args[2]) {
1300
            tcg_out32 (s, (RLWINM
1301
                           | RA (args[0])
1302
                           | RS (args[1])
1303
                           | SH (32 - args[2])
1304
                           | MB (args[2])
1305
                           | ME (31)
1306
                           )
1307
                );
1308
        }
1309
        else
1310
            tcg_out32 (s, SRW | SAB (args[1], args[0], args[2]));
1311
        break;
1312
    case INDEX_op_sar_i32:
1313
        if (const_args[2])
1314
            tcg_out32 (s, SRAWI | RS (args[1]) | RA (args[0]) | SH (args[2]));
1315
        else
1316
            tcg_out32 (s, SRAW | SAB (args[1], args[0], args[2]));
1317
        break;
1318

    
1319
    case INDEX_op_brcond_i32:
1320
        tcg_out_brcond (s, args[2], args[0], args[1], const_args[1], args[3], 0);
1321
        break;
1322

    
1323
    case INDEX_op_brcond_i64:
1324
        tcg_out_brcond (s, args[2], args[0], args[1], const_args[1], args[3], 1);
1325
        break;
1326

    
1327
    case INDEX_op_neg_i32:
1328
    case INDEX_op_neg_i64:
1329
        tcg_out32 (s, NEG | RT (args[0]) | RA (args[1]));
1330
        break;
1331

    
1332
    case INDEX_op_add_i64:
1333
        if (const_args[2])
1334
            ppc_addi64 (s, args[0], args[1], args[2]);
1335
        else
1336
            tcg_out32 (s, ADD | TAB (args[0], args[1], args[2]));
1337
        break;
1338
    case INDEX_op_sub_i64:
1339
        if (const_args[2])
1340
            ppc_addi64 (s, args[0], args[1], -args[2]);
1341
        else
1342
            tcg_out32 (s, SUBF | TAB (args[0], args[2], args[1]));
1343
        break;
1344

    
1345
    case INDEX_op_shl_i64:
1346
        if (const_args[2])
1347
            tcg_out_rld (s, RLDICR, args[0], args[1], args[2], 63 - args[2]);
1348
        else
1349
            tcg_out32 (s, SLD | SAB (args[1], args[0], args[2]));
1350
        break;
1351
    case INDEX_op_shr_i64:
1352
        if (const_args[2])
1353
            tcg_out_rld (s, RLDICL, args[0], args[1], 64 - args[2], args[2]);
1354
        else
1355
            tcg_out32 (s, SRD | SAB (args[1], args[0], args[2]));
1356
        break;
1357
    case INDEX_op_sar_i64:
1358
        if (const_args[2]) {
1359
            int sh = SH (args[2] & 0x1f) | (((args[2] >> 5) & 1) << 1);
1360
            tcg_out32 (s, SRADI | RA (args[0]) | RS (args[1]) | sh);
1361
        }
1362
        else
1363
            tcg_out32 (s, SRAD | SAB (args[1], args[0], args[2]));
1364
        break;
1365

    
1366
    case INDEX_op_mul_i64:
1367
        tcg_out32 (s, MULLD | TAB (args[0], args[1], args[2]));
1368
        break;
1369
    case INDEX_op_div_i64:
1370
        tcg_out32 (s, DIVD | TAB (args[0], args[1], args[2]));
1371
        break;
1372
    case INDEX_op_divu_i64:
1373
        tcg_out32 (s, DIVDU | TAB (args[0], args[1], args[2]));
1374
        break;
1375
    case INDEX_op_rem_i64:
1376
        tcg_out32 (s, DIVD | TAB (0, args[1], args[2]));
1377
        tcg_out32 (s, MULLD | TAB (0, 0, args[2]));
1378
        tcg_out32 (s, SUBF | TAB (args[0], 0, args[1]));
1379
        break;
1380
    case INDEX_op_remu_i64:
1381
        tcg_out32 (s, DIVDU | TAB (0, args[1], args[2]));
1382
        tcg_out32 (s, MULLD | TAB (0, 0, args[2]));
1383
        tcg_out32 (s, SUBF | TAB (args[0], 0, args[1]));
1384
        break;
1385

    
1386
    case INDEX_op_qemu_ld8u:
1387
        tcg_out_qemu_ld (s, args, 0);
1388
        break;
1389
    case INDEX_op_qemu_ld8s:
1390
        tcg_out_qemu_ld (s, args, 0 | 4);
1391
        break;
1392
    case INDEX_op_qemu_ld16u:
1393
        tcg_out_qemu_ld (s, args, 1);
1394
        break;
1395
    case INDEX_op_qemu_ld16s:
1396
        tcg_out_qemu_ld (s, args, 1 | 4);
1397
        break;
1398
    case INDEX_op_qemu_ld32u:
1399
        tcg_out_qemu_ld (s, args, 2);
1400
        break;
1401
    case INDEX_op_qemu_ld32s:
1402
        tcg_out_qemu_ld (s, args, 2 | 4);
1403
        break;
1404
    case INDEX_op_qemu_ld64:
1405
        tcg_out_qemu_ld (s, args, 3);
1406
        break;
1407
    case INDEX_op_qemu_st8:
1408
        tcg_out_qemu_st (s, args, 0);
1409
        break;
1410
    case INDEX_op_qemu_st16:
1411
        tcg_out_qemu_st (s, args, 1);
1412
        break;
1413
    case INDEX_op_qemu_st32:
1414
        tcg_out_qemu_st (s, args, 2);
1415
        break;
1416
    case INDEX_op_qemu_st64:
1417
        tcg_out_qemu_st (s, args, 3);
1418
        break;
1419

    
1420
    case INDEX_op_ext8s_i32:
1421
    case INDEX_op_ext8s_i64:
1422
        c = EXTSB;
1423
        goto gen_ext;
1424
    case INDEX_op_ext16s_i32:
1425
    case INDEX_op_ext16s_i64:
1426
        c = EXTSH;
1427
        goto gen_ext;
1428
    case INDEX_op_ext32s_i64:
1429
        c = EXTSW;
1430
        goto gen_ext;
1431
    gen_ext:
1432
        tcg_out32 (s, c | RS (args[1]) | RA (args[0]));
1433
        break;
1434

    
1435
    default:
1436
        tcg_dump_ops (s, stderr);
1437
        tcg_abort ();
1438
    }
1439
}
1440

    
1441
static const TCGTargetOpDef ppc_op_defs[] = {
1442
    { INDEX_op_exit_tb, { } },
1443
    { INDEX_op_goto_tb, { } },
1444
    { INDEX_op_call, { "ri" } },
1445
    { INDEX_op_jmp, { "ri" } },
1446
    { INDEX_op_br, { } },
1447

    
1448
    { INDEX_op_mov_i32, { "r", "r" } },
1449
    { INDEX_op_mov_i64, { "r", "r" } },
1450
    { INDEX_op_movi_i32, { "r" } },
1451
    { INDEX_op_movi_i64, { "r" } },
1452

    
1453
    { INDEX_op_ld8u_i32, { "r", "r" } },
1454
    { INDEX_op_ld8s_i32, { "r", "r" } },
1455
    { INDEX_op_ld16u_i32, { "r", "r" } },
1456
    { INDEX_op_ld16s_i32, { "r", "r" } },
1457
    { INDEX_op_ld_i32, { "r", "r" } },
1458
    { INDEX_op_ld_i64, { "r", "r" } },
1459
    { INDEX_op_st8_i32, { "r", "r" } },
1460
    { INDEX_op_st8_i64, { "r", "r" } },
1461
    { INDEX_op_st16_i32, { "r", "r" } },
1462
    { INDEX_op_st16_i64, { "r", "r" } },
1463
    { INDEX_op_st_i32, { "r", "r" } },
1464
    { INDEX_op_st_i64, { "r", "r" } },
1465
    { INDEX_op_st32_i64, { "r", "r" } },
1466

    
1467
    { INDEX_op_ld8u_i64, { "r", "r" } },
1468
    { INDEX_op_ld8s_i64, { "r", "r" } },
1469
    { INDEX_op_ld16u_i64, { "r", "r" } },
1470
    { INDEX_op_ld16s_i64, { "r", "r" } },
1471
    { INDEX_op_ld32u_i64, { "r", "r" } },
1472
    { INDEX_op_ld32s_i64, { "r", "r" } },
1473
    { INDEX_op_ld_i64, { "r", "r" } },
1474

    
1475
    { INDEX_op_add_i32, { "r", "r", "ri" } },
1476
    { INDEX_op_mul_i32, { "r", "r", "ri" } },
1477
    { INDEX_op_div_i32, { "r", "r", "r" } },
1478
    { INDEX_op_divu_i32, { "r", "r", "r" } },
1479
    { INDEX_op_rem_i32, { "r", "r", "r" } },
1480
    { INDEX_op_remu_i32, { "r", "r", "r" } },
1481
    { INDEX_op_sub_i32, { "r", "r", "ri" } },
1482
    { INDEX_op_and_i32, { "r", "r", "ri" } },
1483
    { INDEX_op_or_i32, { "r", "r", "ri" } },
1484
    { INDEX_op_xor_i32, { "r", "r", "ri" } },
1485

    
1486
    { INDEX_op_shl_i32, { "r", "r", "ri" } },
1487
    { INDEX_op_shr_i32, { "r", "r", "ri" } },
1488
    { INDEX_op_sar_i32, { "r", "r", "ri" } },
1489

    
1490
    { INDEX_op_brcond_i32, { "r", "ri" } },
1491
    { INDEX_op_brcond_i64, { "r", "ri" } },
1492

    
1493
    { INDEX_op_neg_i32, { "r", "r" } },
1494

    
1495
    { INDEX_op_add_i64, { "r", "r", "ri" } },
1496
    { INDEX_op_sub_i64, { "r", "r", "ri" } },
1497
    { INDEX_op_and_i64, { "r", "r", "rZ" } },
1498
    { INDEX_op_or_i64, { "r", "r", "rZ" } },
1499
    { INDEX_op_xor_i64, { "r", "r", "rZ" } },
1500

    
1501
    { INDEX_op_shl_i64, { "r", "r", "ri" } },
1502
    { INDEX_op_shr_i64, { "r", "r", "ri" } },
1503
    { INDEX_op_sar_i64, { "r", "r", "ri" } },
1504

    
1505
    { INDEX_op_mul_i64, { "r", "r", "r" } },
1506
    { INDEX_op_div_i64, { "r", "r", "r" } },
1507
    { INDEX_op_divu_i64, { "r", "r", "r" } },
1508
    { INDEX_op_rem_i64, { "r", "r", "r" } },
1509
    { INDEX_op_remu_i64, { "r", "r", "r" } },
1510

    
1511
    { INDEX_op_neg_i64, { "r", "r" } },
1512

    
1513
    { INDEX_op_qemu_ld8u, { "r", "L" } },
1514
    { INDEX_op_qemu_ld8s, { "r", "L" } },
1515
    { INDEX_op_qemu_ld16u, { "r", "L" } },
1516
    { INDEX_op_qemu_ld16s, { "r", "L" } },
1517
    { INDEX_op_qemu_ld32u, { "r", "L" } },
1518
    { INDEX_op_qemu_ld32s, { "r", "L" } },
1519
    { INDEX_op_qemu_ld64, { "r", "L" } },
1520

    
1521
    { INDEX_op_qemu_st8, { "S", "S" } },
1522
    { INDEX_op_qemu_st16, { "S", "S" } },
1523
    { INDEX_op_qemu_st32, { "S", "S" } },
1524
    { INDEX_op_qemu_st64, { "S", "S" } },
1525

    
1526
    { INDEX_op_ext8s_i32, { "r", "r" } },
1527
    { INDEX_op_ext16s_i32, { "r", "r" } },
1528
    { INDEX_op_ext8s_i64, { "r", "r" } },
1529
    { INDEX_op_ext16s_i64, { "r", "r" } },
1530
    { INDEX_op_ext32s_i64, { "r", "r" } },
1531

    
1532
    { -1 },
1533
};
1534

    
1535
void tcg_target_init (TCGContext *s)
1536
{
1537
    tcg_regset_set32 (tcg_target_available_regs[TCG_TYPE_I32], 0, 0xffffffff);
1538
    tcg_regset_set32 (tcg_target_available_regs[TCG_TYPE_I64], 0, 0xffffffff);
1539
    tcg_regset_set32 (tcg_target_call_clobber_regs, 0,
1540
                     (1 << TCG_REG_R0) |
1541
#ifdef __APPLE__
1542
                     (1 << TCG_REG_R2) |
1543
#endif
1544
                     (1 << TCG_REG_R3) |
1545
                     (1 << TCG_REG_R4) |
1546
                     (1 << TCG_REG_R5) |
1547
                     (1 << TCG_REG_R6) |
1548
                     (1 << TCG_REG_R7) |
1549
                     (1 << TCG_REG_R8) |
1550
                     (1 << TCG_REG_R9) |
1551
                     (1 << TCG_REG_R10) |
1552
                     (1 << TCG_REG_R11) |
1553
                     (1 << TCG_REG_R12)
1554
        );
1555

    
1556
    tcg_regset_clear (s->reserved_regs);
1557
    tcg_regset_set_reg (s->reserved_regs, TCG_REG_R0);
1558
    tcg_regset_set_reg (s->reserved_regs, TCG_REG_R1);
1559
#ifndef __APPLE__
1560
    tcg_regset_set_reg (s->reserved_regs, TCG_REG_R2);
1561
#endif
1562
    tcg_regset_set_reg (s->reserved_regs, TCG_REG_R13);
1563

    
1564
#ifdef CONFIG_USE_GUEST_BASE
1565
    tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG);
1566
#endif
1567

    
1568
    tcg_add_target_add_op_defs (ppc_op_defs);
1569
}