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m48t59: avoid structure holes spotted by pahole
[qemu/mdroth.git] / tcg / arm / tcg-target.c
blob93eb0f1a4548c38ba5d625d75831a6a61a47a57f
1 /*
2 * Tiny Code Generator for QEMU
3 *
4 * Copyright (c) 2008 Andrzej Zaborowski
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 #if defined(__ARM_ARCH_7__) || \
26 defined(__ARM_ARCH_7A__) || \
27 defined(__ARM_ARCH_7EM__) || \
28 defined(__ARM_ARCH_7M__) || \
29 defined(__ARM_ARCH_7R__)
30 #define USE_ARMV7_INSTRUCTIONS
31 #endif
32
33 #if defined(USE_ARMV7_INSTRUCTIONS) || \
34 defined(__ARM_ARCH_6J__) || \
35 defined(__ARM_ARCH_6K__) || \
36 defined(__ARM_ARCH_6T2__) || \
37 defined(__ARM_ARCH_6Z__) || \
38 defined(__ARM_ARCH_6ZK__)
39 #define USE_ARMV6_INSTRUCTIONS
40 #endif
41
42 #if defined(USE_ARMV6_INSTRUCTIONS) || \
43 defined(__ARM_ARCH_5T__) || \
44 defined(__ARM_ARCH_5TE__) || \
45 defined(__ARM_ARCH_5TEJ__)
46 #define USE_ARMV5_INSTRUCTIONS
47 #endif
48
49 #ifdef USE_ARMV5_INSTRUCTIONS
50 static const int use_armv5_instructions = 1;
51 #else
52 static const int use_armv5_instructions = 0;
53 #endif
54 #undef USE_ARMV5_INSTRUCTIONS
55
56 #ifdef USE_ARMV6_INSTRUCTIONS
57 static const int use_armv6_instructions = 1;
58 #else
59 static const int use_armv6_instructions = 0;
60 #endif
61 #undef USE_ARMV6_INSTRUCTIONS
62
63 #ifdef USE_ARMV7_INSTRUCTIONS
64 static const int use_armv7_instructions = 1;
65 #else
66 static const int use_armv7_instructions = 0;
67 #endif
68 #undef USE_ARMV7_INSTRUCTIONS
69
70 #ifndef NDEBUG
71 static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
72 "%r0",
73 "%r1",
74 "%r2",
75 "%r3",
76 "%r4",
77 "%r5",
78 "%r6",
79 "%r7",
80 "%r8",
81 "%r9",
82 "%r10",
83 "%r11",
84 "%r12",
85 "%r13",
86 "%r14",
87 "%pc",
88 };
89 #endif
90
91 static const int tcg_target_reg_alloc_order[] = {
92 TCG_REG_R4,
93 TCG_REG_R5,
94 TCG_REG_R6,
95 TCG_REG_R7,
96 TCG_REG_R8,
97 TCG_REG_R9,
98 TCG_REG_R10,
99 TCG_REG_R11,
100 TCG_REG_R13,
101 TCG_REG_R0,
102 TCG_REG_R1,
103 TCG_REG_R2,
104 TCG_REG_R3,
105 TCG_REG_R12,
106 TCG_REG_R14,
107 };
108
109 static const int tcg_target_call_iarg_regs[4] = {
110 TCG_REG_R0, TCG_REG_R1, TCG_REG_R2, TCG_REG_R3
111 };
112 static const int tcg_target_call_oarg_regs[2] = {
113 TCG_REG_R0, TCG_REG_R1
114 };
115
116 static inline void reloc_abs32(void *code_ptr, tcg_target_long target)
117 {
118 *(uint32_t *) code_ptr = target;
119 }
120
121 static inline void reloc_pc24(void *code_ptr, tcg_target_long target)
122 {
123 uint32_t offset = ((target - ((tcg_target_long) code_ptr + 8)) >> 2);
124
125 *(uint32_t *) code_ptr = ((*(uint32_t *) code_ptr) & ~0xffffff)
126 | (offset & 0xffffff);
127 }
128
129 static void patch_reloc(uint8_t *code_ptr, int type,
130 tcg_target_long value, tcg_target_long addend)
131 {
132 switch (type) {
133 case R_ARM_ABS32:
134 reloc_abs32(code_ptr, value);
135 break;
136
137 case R_ARM_CALL:
138 case R_ARM_JUMP24:
139 default:
140 tcg_abort();
141
142 case R_ARM_PC24:
143 reloc_pc24(code_ptr, value);
144 break;
145 }
146 }
147
148 /* maximum number of register used for input function arguments */
149 static inline int tcg_target_get_call_iarg_regs_count(int flags)
150 {
151 return 4;
152 }
153
154 /* parse target specific constraints */
155 static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
156 {
157 const char *ct_str;
158
159 ct_str = *pct_str;
160 switch (ct_str[0]) {
161 case 'I':
162 ct->ct |= TCG_CT_CONST_ARM;
163 break;
164
165 case 'r':
166 ct->ct |= TCG_CT_REG;
167 tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1);
168 break;
169
170 /* qemu_ld address */
171 case 'l':
172 ct->ct |= TCG_CT_REG;
173 tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1);
174 #ifdef CONFIG_SOFTMMU
175 /* r0 and r1 will be overwritten when reading the tlb entry,
176 so don't use these. */
177 tcg_regset_reset_reg(ct->u.regs, TCG_REG_R0);
178 tcg_regset_reset_reg(ct->u.regs, TCG_REG_R1);
179 #endif
180 break;
181 case 'L':
182 ct->ct |= TCG_CT_REG;
183 tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1);
184 #ifdef CONFIG_SOFTMMU
185 /* r1 is still needed to load data_reg or data_reg2,
186 so don't use it. */
187 tcg_regset_reset_reg(ct->u.regs, TCG_REG_R1);
188 #endif
189 break;
190
191 /* qemu_st address & data_reg */
192 case 's':
193 ct->ct |= TCG_CT_REG;
194 tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1);
195 /* r0 and r1 will be overwritten when reading the tlb entry
196 (softmmu only) and doing the byte swapping, so don't
197 use these. */
198 tcg_regset_reset_reg(ct->u.regs, TCG_REG_R0);
199 tcg_regset_reset_reg(ct->u.regs, TCG_REG_R1);
200 break;
201 /* qemu_st64 data_reg2 */
202 case 'S':
203 ct->ct |= TCG_CT_REG;
204 tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1);
205 /* r0 and r1 will be overwritten when reading the tlb entry
206 (softmmu only) and doing the byte swapping, so don't
207 use these. */
208 tcg_regset_reset_reg(ct->u.regs, TCG_REG_R0);
209 tcg_regset_reset_reg(ct->u.regs, TCG_REG_R1);
210 #ifdef CONFIG_SOFTMMU
211 /* r2 is still needed to load data_reg, so don't use it. */
212 tcg_regset_reset_reg(ct->u.regs, TCG_REG_R2);
213 #endif
214 break;
215
216 default:
217 return -1;
218 }
219 ct_str++;
220 *pct_str = ct_str;
221
222 return 0;
223 }
224
225 static inline uint32_t rotl(uint32_t val, int n)
226 {
227 return (val << n) | (val >> (32 - n));
228 }
229
230 /* ARM immediates for ALU instructions are made of an unsigned 8-bit
231 right-rotated by an even amount between 0 and 30. */
232 static inline int encode_imm(uint32_t imm)
233 {
234 int shift;
235
236 /* simple case, only lower bits */
237 if ((imm & ~0xff) == 0)
238 return 0;
239 /* then try a simple even shift */
240 shift = ctz32(imm) & ~1;
241 if (((imm >> shift) & ~0xff) == 0)
242 return 32 - shift;
243 /* now try harder with rotations */
244 if ((rotl(imm, 2) & ~0xff) == 0)
245 return 2;
246 if ((rotl(imm, 4) & ~0xff) == 0)
247 return 4;
248 if ((rotl(imm, 6) & ~0xff) == 0)
249 return 6;
250 /* imm can't be encoded */
251 return -1;
252 }
253
254 static inline int check_fit_imm(uint32_t imm)
255 {
256 return encode_imm(imm) >= 0;
257 }
258
259 /* Test if a constant matches the constraint.
260 * TODO: define constraints for:
261 *
262 * ldr/str offset: between -0xfff and 0xfff
263 * ldrh/strh offset: between -0xff and 0xff
264 * mov operand2: values represented with x << (2 * y), x < 0x100
265 * add, sub, eor...: ditto
266 */
267 static inline int tcg_target_const_match(tcg_target_long val,
268 const TCGArgConstraint *arg_ct)
269 {
270 int ct;
271 ct = arg_ct->ct;
272 if (ct & TCG_CT_CONST)
273 return 1;
274 else if ((ct & TCG_CT_CONST_ARM) && check_fit_imm(val))
275 return 1;
276 else
277 return 0;
278 }
279
280 enum arm_data_opc_e {
281 ARITH_AND = 0x0,
282 ARITH_EOR = 0x1,
283 ARITH_SUB = 0x2,
284 ARITH_RSB = 0x3,
285 ARITH_ADD = 0x4,
286 ARITH_ADC = 0x5,
287 ARITH_SBC = 0x6,
288 ARITH_RSC = 0x7,
289 ARITH_TST = 0x8,
290 ARITH_CMP = 0xa,
291 ARITH_CMN = 0xb,
292 ARITH_ORR = 0xc,
293 ARITH_MOV = 0xd,
294 ARITH_BIC = 0xe,
295 ARITH_MVN = 0xf,
296 };
297
298 #define TO_CPSR(opc) \
299 ((opc == ARITH_CMP || opc == ARITH_CMN || opc == ARITH_TST) << 20)
300
301 #define SHIFT_IMM_LSL(im) (((im) << 7) | 0x00)
302 #define SHIFT_IMM_LSR(im) (((im) << 7) | 0x20)
303 #define SHIFT_IMM_ASR(im) (((im) << 7) | 0x40)
304 #define SHIFT_IMM_ROR(im) (((im) << 7) | 0x60)
305 #define SHIFT_REG_LSL(rs) (((rs) << 8) | 0x10)
306 #define SHIFT_REG_LSR(rs) (((rs) << 8) | 0x30)
307 #define SHIFT_REG_ASR(rs) (((rs) << 8) | 0x50)
308 #define SHIFT_REG_ROR(rs) (((rs) << 8) | 0x70)
309
310 enum arm_cond_code_e {
311 COND_EQ = 0x0,
312 COND_NE = 0x1,
313 COND_CS = 0x2, /* Unsigned greater or equal */
314 COND_CC = 0x3, /* Unsigned less than */
315 COND_MI = 0x4, /* Negative */
316 COND_PL = 0x5, /* Zero or greater */
317 COND_VS = 0x6, /* Overflow */
318 COND_VC = 0x7, /* No overflow */
319 COND_HI = 0x8, /* Unsigned greater than */
320 COND_LS = 0x9, /* Unsigned less or equal */
321 COND_GE = 0xa,
322 COND_LT = 0xb,
323 COND_GT = 0xc,
324 COND_LE = 0xd,
325 COND_AL = 0xe,
326 };
327
328 static const uint8_t tcg_cond_to_arm_cond[10] = {
329 [TCG_COND_EQ] = COND_EQ,
330 [TCG_COND_NE] = COND_NE,
331 [TCG_COND_LT] = COND_LT,
332 [TCG_COND_GE] = COND_GE,
333 [TCG_COND_LE] = COND_LE,
334 [TCG_COND_GT] = COND_GT,
335 /* unsigned */
336 [TCG_COND_LTU] = COND_CC,
337 [TCG_COND_GEU] = COND_CS,
338 [TCG_COND_LEU] = COND_LS,
339 [TCG_COND_GTU] = COND_HI,
340 };
341
342 static inline void tcg_out_bx(TCGContext *s, int cond, int rn)
343 {
344 tcg_out32(s, (cond << 28) | 0x012fff10 | rn);
345 }
346
347 static inline void tcg_out_b(TCGContext *s, int cond, int32_t offset)
348 {
349 tcg_out32(s, (cond << 28) | 0x0a000000 |
350 (((offset - 8) >> 2) & 0x00ffffff));
351 }
352
353 static inline void tcg_out_b_noaddr(TCGContext *s, int cond)
354 {
355 /* We pay attention here to not modify the branch target by skipping
356 the corresponding bytes. This ensure that caches and memory are
357 kept coherent during retranslation. */
358 #ifdef HOST_WORDS_BIGENDIAN
359 tcg_out8(s, (cond << 4) | 0x0a);
360 s->code_ptr += 3;
361 #else
362 s->code_ptr += 3;
363 tcg_out8(s, (cond << 4) | 0x0a);
364 #endif
365 }
366
367 static inline void tcg_out_bl(TCGContext *s, int cond, int32_t offset)
368 {
369 tcg_out32(s, (cond << 28) | 0x0b000000 |
370 (((offset - 8) >> 2) & 0x00ffffff));
371 }
372
373 static inline void tcg_out_blx(TCGContext *s, int cond, int rn)
374 {
375 tcg_out32(s, (cond << 28) | 0x012fff30 | rn);
376 }
377
378 static inline void tcg_out_blx_imm(TCGContext *s, int32_t offset)
379 {
380 tcg_out32(s, 0xfa000000 | ((offset & 2) << 23) |
381 (((offset - 8) >> 2) & 0x00ffffff));
382 }
383
384 static inline void tcg_out_dat_reg(TCGContext *s,
385 int cond, int opc, int rd, int rn, int rm, int shift)
386 {
387 tcg_out32(s, (cond << 28) | (0 << 25) | (opc << 21) | TO_CPSR(opc) |
388 (rn << 16) | (rd << 12) | shift | rm);
389 }
390
391 static inline void tcg_out_dat_reg2(TCGContext *s,
392 int cond, int opc0, int opc1, int rd0, int rd1,
393 int rn0, int rn1, int rm0, int rm1, int shift)
394 {
395 if (rd0 == rn1 || rd0 == rm1) {
396 tcg_out32(s, (cond << 28) | (0 << 25) | (opc0 << 21) | (1 << 20) |
397 (rn0 << 16) | (8 << 12) | shift | rm0);
398 tcg_out32(s, (cond << 28) | (0 << 25) | (opc1 << 21) |
399 (rn1 << 16) | (rd1 << 12) | shift | rm1);
400 tcg_out_dat_reg(s, cond, ARITH_MOV,
401 rd0, 0, TCG_REG_R8, SHIFT_IMM_LSL(0));
402 } else {
403 tcg_out32(s, (cond << 28) | (0 << 25) | (opc0 << 21) | (1 << 20) |
404 (rn0 << 16) | (rd0 << 12) | shift | rm0);
405 tcg_out32(s, (cond << 28) | (0 << 25) | (opc1 << 21) |
406 (rn1 << 16) | (rd1 << 12) | shift | rm1);
407 }
408 }
409
410 static inline void tcg_out_dat_imm(TCGContext *s,
411 int cond, int opc, int rd, int rn, int im)
412 {
413 tcg_out32(s, (cond << 28) | (1 << 25) | (opc << 21) | TO_CPSR(opc) |
414 (rn << 16) | (rd << 12) | im);
415 }
416
417 static inline void tcg_out_movi32(TCGContext *s,
418 int cond, int rd, uint32_t arg)
419 {
420 /* TODO: This is very suboptimal, we can easily have a constant
421 * pool somewhere after all the instructions. */
422 if ((int)arg < 0 && (int)arg >= -0x100) {
423 tcg_out_dat_imm(s, cond, ARITH_MVN, rd, 0, (~arg) & 0xff);
424 } else if (use_armv7_instructions) {
425 /* use movw/movt */
426 /* movw */
427 tcg_out32(s, (cond << 28) | 0x03000000 | (rd << 12)
428 | ((arg << 4) & 0x000f0000) | (arg & 0xfff));
429 if (arg & 0xffff0000) {
430 /* movt */
431 tcg_out32(s, (cond << 28) | 0x03400000 | (rd << 12)
432 | ((arg >> 12) & 0x000f0000) | ((arg >> 16) & 0xfff));
433 }
434 } else {
435 int opc = ARITH_MOV;
436 int rn = 0;
437
438 do {
439 int i, rot;
440
441 i = ctz32(arg) & ~1;
442 rot = ((32 - i) << 7) & 0xf00;
443 tcg_out_dat_imm(s, cond, opc, rd, rn, ((arg >> i) & 0xff) | rot);
444 arg &= ~(0xff << i);
445
446 opc = ARITH_ORR;
447 rn = rd;
448 } while (arg);
449 }
450 }
451
452 static inline void tcg_out_mul32(TCGContext *s,
453 int cond, int rd, int rs, int rm)
454 {
455 if (rd != rm)
456 tcg_out32(s, (cond << 28) | (rd << 16) | (0 << 12) |
457 (rs << 8) | 0x90 | rm);
458 else if (rd != rs)
459 tcg_out32(s, (cond << 28) | (rd << 16) | (0 << 12) |
460 (rm << 8) | 0x90 | rs);
461 else {
462 tcg_out32(s, (cond << 28) | ( 8 << 16) | (0 << 12) |
463 (rs << 8) | 0x90 | rm);
464 tcg_out_dat_reg(s, cond, ARITH_MOV,
465 rd, 0, TCG_REG_R8, SHIFT_IMM_LSL(0));
466 }
467 }
468
469 static inline void tcg_out_umull32(TCGContext *s,
470 int cond, int rd0, int rd1, int rs, int rm)
471 {
472 if (rd0 != rm && rd1 != rm)
473 tcg_out32(s, (cond << 28) | 0x800090 |
474 (rd1 << 16) | (rd0 << 12) | (rs << 8) | rm);
475 else if (rd0 != rs && rd1 != rs)
476 tcg_out32(s, (cond << 28) | 0x800090 |
477 (rd1 << 16) | (rd0 << 12) | (rm << 8) | rs);
478 else {
479 tcg_out_dat_reg(s, cond, ARITH_MOV,
480 TCG_REG_R8, 0, rm, SHIFT_IMM_LSL(0));
481 tcg_out32(s, (cond << 28) | 0x800098 |
482 (rd1 << 16) | (rd0 << 12) | (rs << 8));
483 }
484 }
485
486 static inline void tcg_out_smull32(TCGContext *s,
487 int cond, int rd0, int rd1, int rs, int rm)
488 {
489 if (rd0 != rm && rd1 != rm)
490 tcg_out32(s, (cond << 28) | 0xc00090 |
491 (rd1 << 16) | (rd0 << 12) | (rs << 8) | rm);
492 else if (rd0 != rs && rd1 != rs)
493 tcg_out32(s, (cond << 28) | 0xc00090 |
494 (rd1 << 16) | (rd0 << 12) | (rm << 8) | rs);
495 else {
496 tcg_out_dat_reg(s, cond, ARITH_MOV,
497 TCG_REG_R8, 0, rm, SHIFT_IMM_LSL(0));
498 tcg_out32(s, (cond << 28) | 0xc00098 |
499 (rd1 << 16) | (rd0 << 12) | (rs << 8));
500 }
501 }
502
503 static inline void tcg_out_ext8s(TCGContext *s, int cond,
504 int rd, int rn)
505 {
506 if (use_armv6_instructions) {
507 /* sxtb */
508 tcg_out32(s, 0x06af0070 | (cond << 28) | (rd << 12) | rn);
509 } else {
510 tcg_out_dat_reg(s, cond, ARITH_MOV,
511 rd, 0, rn, SHIFT_IMM_LSL(24));
512 tcg_out_dat_reg(s, cond, ARITH_MOV,
513 rd, 0, rd, SHIFT_IMM_ASR(24));
514 }
515 }
516
517 static inline void tcg_out_ext8u(TCGContext *s, int cond,
518 int rd, int rn)
519 {
520 tcg_out_dat_imm(s, cond, ARITH_AND, rd, rn, 0xff);
521 }
522
523 static inline void tcg_out_ext16s(TCGContext *s, int cond,
524 int rd, int rn)
525 {
526 if (use_armv6_instructions) {
527 /* sxth */
528 tcg_out32(s, 0x06bf0070 | (cond << 28) | (rd << 12) | rn);
529 } else {
530 tcg_out_dat_reg(s, cond, ARITH_MOV,
531 rd, 0, rn, SHIFT_IMM_LSL(16));
532 tcg_out_dat_reg(s, cond, ARITH_MOV,
533 rd, 0, rd, SHIFT_IMM_ASR(16));
534 }
535 }
536
537 static inline void tcg_out_ext16u(TCGContext *s, int cond,
538 int rd, int rn)
539 {
540 if (use_armv6_instructions) {
541 /* uxth */
542 tcg_out32(s, 0x06ff0070 | (cond << 28) | (rd << 12) | rn);
543 } else {
544 tcg_out_dat_reg(s, cond, ARITH_MOV,
545 rd, 0, rn, SHIFT_IMM_LSL(16));
546 tcg_out_dat_reg(s, cond, ARITH_MOV,
547 rd, 0, rd, SHIFT_IMM_LSR(16));
548 }
549 }
550
551 static inline void tcg_out_bswap16s(TCGContext *s, int cond, int rd, int rn)
552 {
553 if (use_armv6_instructions) {
554 /* revsh */
555 tcg_out32(s, 0x06ff0fb0 | (cond << 28) | (rd << 12) | rn);
556 } else {
557 tcg_out_dat_reg(s, cond, ARITH_MOV,
558 TCG_REG_R8, 0, rn, SHIFT_IMM_LSL(24));
559 tcg_out_dat_reg(s, cond, ARITH_MOV,
560 TCG_REG_R8, 0, TCG_REG_R8, SHIFT_IMM_ASR(16));
561 tcg_out_dat_reg(s, cond, ARITH_ORR,
562 rd, TCG_REG_R8, rn, SHIFT_IMM_LSR(8));
563 }
564 }
565
566 static inline void tcg_out_bswap16(TCGContext *s, int cond, int rd, int rn)
567 {
568 if (use_armv6_instructions) {
569 /* rev16 */
570 tcg_out32(s, 0x06bf0fb0 | (cond << 28) | (rd << 12) | rn);
571 } else {
572 tcg_out_dat_reg(s, cond, ARITH_MOV,
573 TCG_REG_R8, 0, rn, SHIFT_IMM_LSL(24));
574 tcg_out_dat_reg(s, cond, ARITH_MOV,
575 TCG_REG_R8, 0, TCG_REG_R8, SHIFT_IMM_LSR(16));
576 tcg_out_dat_reg(s, cond, ARITH_ORR,
577 rd, TCG_REG_R8, rn, SHIFT_IMM_LSR(8));
578 }
579 }
580
581 static inline void tcg_out_bswap32(TCGContext *s, int cond, int rd, int rn)
582 {
583 if (use_armv6_instructions) {
584 /* rev */
585 tcg_out32(s, 0x06bf0f30 | (cond << 28) | (rd << 12) | rn);
586 } else {
587 tcg_out_dat_reg(s, cond, ARITH_EOR,
588 TCG_REG_R8, rn, rn, SHIFT_IMM_ROR(16));
589 tcg_out_dat_imm(s, cond, ARITH_BIC,
590 TCG_REG_R8, TCG_REG_R8, 0xff | 0x800);
591 tcg_out_dat_reg(s, cond, ARITH_MOV,
592 rd, 0, rn, SHIFT_IMM_ROR(8));
593 tcg_out_dat_reg(s, cond, ARITH_EOR,
594 rd, rd, TCG_REG_R8, SHIFT_IMM_LSR(8));
595 }
596 }
597
598 static inline void tcg_out_ld32_12(TCGContext *s, int cond,
599 int rd, int rn, tcg_target_long im)
600 {
601 if (im >= 0)
602 tcg_out32(s, (cond << 28) | 0x05900000 |
603 (rn << 16) | (rd << 12) | (im & 0xfff));
604 else
605 tcg_out32(s, (cond << 28) | 0x05100000 |
606 (rn << 16) | (rd << 12) | ((-im) & 0xfff));
607 }
608
609 static inline void tcg_out_st32_12(TCGContext *s, int cond,
610 int rd, int rn, tcg_target_long im)
611 {
612 if (im >= 0)
613 tcg_out32(s, (cond << 28) | 0x05800000 |
614 (rn << 16) | (rd << 12) | (im & 0xfff));
615 else
616 tcg_out32(s, (cond << 28) | 0x05000000 |
617 (rn << 16) | (rd << 12) | ((-im) & 0xfff));
618 }
619
620 static inline void tcg_out_ld32_r(TCGContext *s, int cond,
621 int rd, int rn, int rm)
622 {
623 tcg_out32(s, (cond << 28) | 0x07900000 |
624 (rn << 16) | (rd << 12) | rm);
625 }
626
627 static inline void tcg_out_st32_r(TCGContext *s, int cond,
628 int rd, int rn, int rm)
629 {
630 tcg_out32(s, (cond << 28) | 0x07800000 |
631 (rn << 16) | (rd << 12) | rm);
632 }
633
634 /* Register pre-increment with base writeback. */
635 static inline void tcg_out_ld32_rwb(TCGContext *s, int cond,
636 int rd, int rn, int rm)
637 {
638 tcg_out32(s, (cond << 28) | 0x07b00000 |
639 (rn << 16) | (rd << 12) | rm);
640 }
641
642 static inline void tcg_out_st32_rwb(TCGContext *s, int cond,
643 int rd, int rn, int rm)
644 {
645 tcg_out32(s, (cond << 28) | 0x07a00000 |
646 (rn << 16) | (rd << 12) | rm);
647 }
648
649 static inline void tcg_out_ld16u_8(TCGContext *s, int cond,
650 int rd, int rn, tcg_target_long im)
651 {
652 if (im >= 0)
653 tcg_out32(s, (cond << 28) | 0x01d000b0 |
654 (rn << 16) | (rd << 12) |
655 ((im & 0xf0) << 4) | (im & 0xf));
656 else
657 tcg_out32(s, (cond << 28) | 0x015000b0 |
658 (rn << 16) | (rd << 12) |
659 (((-im) & 0xf0) << 4) | ((-im) & 0xf));
660 }
661
662 static inline void tcg_out_st16_8(TCGContext *s, int cond,
663 int rd, int rn, tcg_target_long im)
664 {
665 if (im >= 0)
666 tcg_out32(s, (cond << 28) | 0x01c000b0 |
667 (rn << 16) | (rd << 12) |
668 ((im & 0xf0) << 4) | (im & 0xf));
669 else
670 tcg_out32(s, (cond << 28) | 0x014000b0 |
671 (rn << 16) | (rd << 12) |
672 (((-im) & 0xf0) << 4) | ((-im) & 0xf));
673 }
674
675 static inline void tcg_out_ld16u_r(TCGContext *s, int cond,
676 int rd, int rn, int rm)
677 {
678 tcg_out32(s, (cond << 28) | 0x019000b0 |
679 (rn << 16) | (rd << 12) | rm);
680 }
681
682 static inline void tcg_out_st16_r(TCGContext *s, int cond,
683 int rd, int rn, int rm)
684 {
685 tcg_out32(s, (cond << 28) | 0x018000b0 |
686 (rn << 16) | (rd << 12) | rm);
687 }
688
689 static inline void tcg_out_ld16s_8(TCGContext *s, int cond,
690 int rd, int rn, tcg_target_long im)
691 {
692 if (im >= 0)
693 tcg_out32(s, (cond << 28) | 0x01d000f0 |
694 (rn << 16) | (rd << 12) |
695 ((im & 0xf0) << 4) | (im & 0xf));
696 else
697 tcg_out32(s, (cond << 28) | 0x015000f0 |
698 (rn << 16) | (rd << 12) |
699 (((-im) & 0xf0) << 4) | ((-im) & 0xf));
700 }
701
702 static inline void tcg_out_ld16s_r(TCGContext *s, int cond,
703 int rd, int rn, int rm)
704 {
705 tcg_out32(s, (cond << 28) | 0x019000f0 |
706 (rn << 16) | (rd << 12) | rm);
707 }
708
709 static inline void tcg_out_ld8_12(TCGContext *s, int cond,
710 int rd, int rn, tcg_target_long im)
711 {
712 if (im >= 0)
713 tcg_out32(s, (cond << 28) | 0x05d00000 |
714 (rn << 16) | (rd << 12) | (im & 0xfff));
715 else
716 tcg_out32(s, (cond << 28) | 0x05500000 |
717 (rn << 16) | (rd << 12) | ((-im) & 0xfff));
718 }
719
720 static inline void tcg_out_st8_12(TCGContext *s, int cond,
721 int rd, int rn, tcg_target_long im)
722 {
723 if (im >= 0)
724 tcg_out32(s, (cond << 28) | 0x05c00000 |
725 (rn << 16) | (rd << 12) | (im & 0xfff));
726 else
727 tcg_out32(s, (cond << 28) | 0x05400000 |
728 (rn << 16) | (rd << 12) | ((-im) & 0xfff));
729 }
730
731 static inline void tcg_out_ld8_r(TCGContext *s, int cond,
732 int rd, int rn, int rm)
733 {
734 tcg_out32(s, (cond << 28) | 0x07d00000 |
735 (rn << 16) | (rd << 12) | rm);
736 }
737
738 static inline void tcg_out_st8_r(TCGContext *s, int cond,
739 int rd, int rn, int rm)
740 {
741 tcg_out32(s, (cond << 28) | 0x07c00000 |
742 (rn << 16) | (rd << 12) | rm);
743 }
744
745 static inline void tcg_out_ld8s_8(TCGContext *s, int cond,
746 int rd, int rn, tcg_target_long im)
747 {
748 if (im >= 0)
749 tcg_out32(s, (cond << 28) | 0x01d000d0 |
750 (rn << 16) | (rd << 12) |
751 ((im & 0xf0) << 4) | (im & 0xf));
752 else
753 tcg_out32(s, (cond << 28) | 0x015000d0 |
754 (rn << 16) | (rd << 12) |
755 (((-im) & 0xf0) << 4) | ((-im) & 0xf));
756 }
757
758 static inline void tcg_out_ld8s_r(TCGContext *s, int cond,
759 int rd, int rn, int rm)
760 {
761 tcg_out32(s, (cond << 28) | 0x019000d0 |
762 (rn << 16) | (rd << 12) | rm);
763 }
764
765 static inline void tcg_out_ld32u(TCGContext *s, int cond,
766 int rd, int rn, int32_t offset)
767 {
768 if (offset > 0xfff || offset < -0xfff) {
769 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
770 tcg_out_ld32_r(s, cond, rd, rn, TCG_REG_R8);
771 } else
772 tcg_out_ld32_12(s, cond, rd, rn, offset);
773 }
774
775 static inline void tcg_out_st32(TCGContext *s, int cond,
776 int rd, int rn, int32_t offset)
777 {
778 if (offset > 0xfff || offset < -0xfff) {
779 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
780 tcg_out_st32_r(s, cond, rd, rn, TCG_REG_R8);
781 } else
782 tcg_out_st32_12(s, cond, rd, rn, offset);
783 }
784
785 static inline void tcg_out_ld16u(TCGContext *s, int cond,
786 int rd, int rn, int32_t offset)
787 {
788 if (offset > 0xff || offset < -0xff) {
789 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
790 tcg_out_ld16u_r(s, cond, rd, rn, TCG_REG_R8);
791 } else
792 tcg_out_ld16u_8(s, cond, rd, rn, offset);
793 }
794
795 static inline void tcg_out_ld16s(TCGContext *s, int cond,
796 int rd, int rn, int32_t offset)
797 {
798 if (offset > 0xff || offset < -0xff) {
799 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
800 tcg_out_ld16s_r(s, cond, rd, rn, TCG_REG_R8);
801 } else
802 tcg_out_ld16s_8(s, cond, rd, rn, offset);
803 }
804
805 static inline void tcg_out_st16(TCGContext *s, int cond,
806 int rd, int rn, int32_t offset)
807 {
808 if (offset > 0xff || offset < -0xff) {
809 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
810 tcg_out_st16_r(s, cond, rd, rn, TCG_REG_R8);
811 } else
812 tcg_out_st16_8(s, cond, rd, rn, offset);
813 }
814
815 static inline void tcg_out_ld8u(TCGContext *s, int cond,
816 int rd, int rn, int32_t offset)
817 {
818 if (offset > 0xfff || offset < -0xfff) {
819 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
820 tcg_out_ld8_r(s, cond, rd, rn, TCG_REG_R8);
821 } else
822 tcg_out_ld8_12(s, cond, rd, rn, offset);
823 }
824
825 static inline void tcg_out_ld8s(TCGContext *s, int cond,
826 int rd, int rn, int32_t offset)
827 {
828 if (offset > 0xff || offset < -0xff) {
829 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
830 tcg_out_ld8s_r(s, cond, rd, rn, TCG_REG_R8);
831 } else
832 tcg_out_ld8s_8(s, cond, rd, rn, offset);
833 }
834
835 static inline void tcg_out_st8(TCGContext *s, int cond,
836 int rd, int rn, int32_t offset)
837 {
838 if (offset > 0xfff || offset < -0xfff) {
839 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
840 tcg_out_st8_r(s, cond, rd, rn, TCG_REG_R8);
841 } else
842 tcg_out_st8_12(s, cond, rd, rn, offset);
843 }
844
845 static inline void tcg_out_goto(TCGContext *s, int cond, uint32_t addr)
846 {
847 int32_t val;
848
849 if (addr & 1) {
850 /* goto to a Thumb destination isn't supported */
851 tcg_abort();
852 }
853
854 val = addr - (tcg_target_long) s->code_ptr;
855 if (val - 8 < 0x01fffffd && val - 8 > -0x01fffffd)
856 tcg_out_b(s, cond, val);
857 else {
858 #if 1
859 tcg_abort();
860 #else
861 if (cond == COND_AL) {
862 tcg_out_ld32_12(s, COND_AL, TCG_REG_PC, TCG_REG_PC, -4);
863 tcg_out32(s, addr); /* XXX: This is l->u.value, can we use it? */
864 } else {
865 tcg_out_movi32(s, cond, TCG_REG_R8, val - 8);
866 tcg_out_dat_reg(s, cond, ARITH_ADD,
867 TCG_REG_PC, TCG_REG_PC,
868 TCG_REG_R8, SHIFT_IMM_LSL(0));
869 }
870 #endif
871 }
872 }
873
874 static inline void tcg_out_call(TCGContext *s, uint32_t addr)
875 {
876 int32_t val;
877
878 val = addr - (tcg_target_long) s->code_ptr;
879 if (val - 8 < 0x02000000 && val - 8 >= -0x02000000) {
880 if (addr & 1) {
881 /* Use BLX if the target is in Thumb mode */
882 if (!use_armv5_instructions) {
883 tcg_abort();
884 }
885 tcg_out_blx_imm(s, val);
886 } else {
887 tcg_out_bl(s, COND_AL, val);
888 }
889 } else {
890 #if 1
891 tcg_abort();
892 #else
893 if (cond == COND_AL) {
894 tcg_out_dat_imm(s, cond, ARITH_ADD, TCG_REG_R14, TCG_REG_PC, 4);
895 tcg_out_ld32_12(s, COND_AL, TCG_REG_PC, TCG_REG_PC, -4);
896 tcg_out32(s, addr); /* XXX: This is l->u.value, can we use it? */
897 } else {
898 tcg_out_movi32(s, cond, TCG_REG_R9, addr);
899 tcg_out_dat_reg(s, cond, ARITH_MOV, TCG_REG_R14, 0,
900 TCG_REG_PC, SHIFT_IMM_LSL(0));
901 tcg_out_bx(s, cond, TCG_REG_R9);
902 }
903 #endif
904 }
905 }
906
907 static inline void tcg_out_callr(TCGContext *s, int cond, int arg)
908 {
909 if (use_armv5_instructions) {
910 tcg_out_blx(s, cond, arg);
911 } else {
912 tcg_out_dat_reg(s, cond, ARITH_MOV, TCG_REG_R14, 0,
913 TCG_REG_PC, SHIFT_IMM_LSL(0));
914 tcg_out_bx(s, cond, arg);
915 }
916 }
917
918 static inline void tcg_out_goto_label(TCGContext *s, int cond, int label_index)
919 {
920 TCGLabel *l = &s->labels[label_index];
921
922 if (l->has_value)
923 tcg_out_goto(s, cond, l->u.value);
924 else if (cond == COND_AL) {
925 tcg_out_ld32_12(s, COND_AL, TCG_REG_PC, TCG_REG_PC, -4);
926 tcg_out_reloc(s, s->code_ptr, R_ARM_ABS32, label_index, 31337);
927 s->code_ptr += 4;
928 } else {
929 /* Probably this should be preferred even for COND_AL... */
930 tcg_out_reloc(s, s->code_ptr, R_ARM_PC24, label_index, 31337);
931 tcg_out_b_noaddr(s, cond);
932 }
933 }
934
935 #ifdef CONFIG_SOFTMMU
936
937 #include "../../softmmu_defs.h"
938
939 static void *qemu_ld_helpers[4] = {
940 __ldb_mmu,
941 __ldw_mmu,
942 __ldl_mmu,
943 __ldq_mmu,
944 };
945
946 static void *qemu_st_helpers[4] = {
947 __stb_mmu,
948 __stw_mmu,
949 __stl_mmu,
950 __stq_mmu,
951 };
952 #endif
953
954 #define TLB_SHIFT (CPU_TLB_ENTRY_BITS + CPU_TLB_BITS)
955
956 static inline void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, int opc)
957 {
958 int addr_reg, data_reg, data_reg2, bswap;
959 #ifdef CONFIG_SOFTMMU
960 int mem_index, s_bits;
961 # if TARGET_LONG_BITS == 64
962 int addr_reg2;
963 # endif
964 uint32_t *label_ptr;
965 #endif
966
967 #ifdef TARGET_WORDS_BIGENDIAN
968 bswap = 1;
969 #else
970 bswap = 0;
971 #endif
972 data_reg = *args++;
973 if (opc == 3)
974 data_reg2 = *args++;
975 else
976 data_reg2 = 0; /* suppress warning */
977 addr_reg = *args++;
978 #ifdef CONFIG_SOFTMMU
979 # if TARGET_LONG_BITS == 64
980 addr_reg2 = *args++;
981 # endif
982 mem_index = *args;
983 s_bits = opc & 3;
984
985 /* Should generate something like the following:
986 * shr r8, addr_reg, #TARGET_PAGE_BITS
987 * and r0, r8, #(CPU_TLB_SIZE - 1) @ Assumption: CPU_TLB_BITS <= 8
988 * add r0, env, r0 lsl #CPU_TLB_ENTRY_BITS
989 */
990 # if CPU_TLB_BITS > 8
991 # error
992 # endif
993 tcg_out_dat_reg(s, COND_AL, ARITH_MOV, TCG_REG_R8,
994 0, addr_reg, SHIFT_IMM_LSR(TARGET_PAGE_BITS));
995 tcg_out_dat_imm(s, COND_AL, ARITH_AND,
996 TCG_REG_R0, TCG_REG_R8, CPU_TLB_SIZE - 1);
997 tcg_out_dat_reg(s, COND_AL, ARITH_ADD, TCG_REG_R0, TCG_AREG0,
998 TCG_REG_R0, SHIFT_IMM_LSL(CPU_TLB_ENTRY_BITS));
999 /* In the
1000 * ldr r1 [r0, #(offsetof(CPUState, tlb_table[mem_index][0].addr_read))]
1001 * below, the offset is likely to exceed 12 bits if mem_index != 0 and
1002 * not exceed otherwise, so use an
1003 * add r0, r0, #(mem_index * sizeof *CPUState.tlb_table)
1004 * before.
1005 */
1006 if (mem_index)
1007 tcg_out_dat_imm(s, COND_AL, ARITH_ADD, TCG_REG_R0, TCG_REG_R0,
1008 (mem_index << (TLB_SHIFT & 1)) |
1009 ((16 - (TLB_SHIFT >> 1)) << 8));
1010 tcg_out_ld32_12(s, COND_AL, TCG_REG_R1, TCG_REG_R0,
1011 offsetof(CPUState, tlb_table[0][0].addr_read));
1012 tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0, TCG_REG_R1,
1013 TCG_REG_R8, SHIFT_IMM_LSL(TARGET_PAGE_BITS));
1014 /* Check alignment. */
1015 if (s_bits)
1016 tcg_out_dat_imm(s, COND_EQ, ARITH_TST,
1017 0, addr_reg, (1 << s_bits) - 1);
1018 # if TARGET_LONG_BITS == 64
1019 /* XXX: possibly we could use a block data load or writeback in
1020 * the first access. */
1021 tcg_out_ld32_12(s, COND_EQ, TCG_REG_R1, TCG_REG_R0,
1022 offsetof(CPUState, tlb_table[0][0].addr_read) + 4);
1023 tcg_out_dat_reg(s, COND_EQ, ARITH_CMP, 0,
1024 TCG_REG_R1, addr_reg2, SHIFT_IMM_LSL(0));
1025 # endif
1026 tcg_out_ld32_12(s, COND_EQ, TCG_REG_R1, TCG_REG_R0,
1027 offsetof(CPUState, tlb_table[0][0].addend));
1028
1029 switch (opc) {
1030 case 0:
1031 tcg_out_ld8_r(s, COND_EQ, data_reg, addr_reg, TCG_REG_R1);
1032 break;
1033 case 0 | 4:
1034 tcg_out_ld8s_r(s, COND_EQ, data_reg, addr_reg, TCG_REG_R1);
1035 break;
1036 case 1:
1037 tcg_out_ld16u_r(s, COND_EQ, data_reg, addr_reg, TCG_REG_R1);
1038 if (bswap) {
1039 tcg_out_bswap16(s, COND_EQ, data_reg, data_reg);
1040 }
1041 break;
1042 case 1 | 4:
1043 if (bswap) {
1044 tcg_out_ld16u_r(s, COND_EQ, data_reg, addr_reg, TCG_REG_R1);
1045 tcg_out_bswap16s(s, COND_EQ, data_reg, data_reg);
1046 } else {
1047 tcg_out_ld16s_r(s, COND_EQ, data_reg, addr_reg, TCG_REG_R1);
1048 }
1049 break;
1050 case 2:
1051 default:
1052 tcg_out_ld32_r(s, COND_EQ, data_reg, addr_reg, TCG_REG_R1);
1053 if (bswap) {
1054 tcg_out_bswap32(s, COND_EQ, data_reg, data_reg);
1055 }
1056 break;
1057 case 3:
1058 if (bswap) {
1059 tcg_out_ld32_rwb(s, COND_EQ, data_reg2, TCG_REG_R1, addr_reg);
1060 tcg_out_ld32_12(s, COND_EQ, data_reg, TCG_REG_R1, 4);
1061 tcg_out_bswap32(s, COND_EQ, data_reg2, data_reg2);
1062 tcg_out_bswap32(s, COND_EQ, data_reg, data_reg);
1063 } else {
1064 tcg_out_ld32_rwb(s, COND_EQ, data_reg, TCG_REG_R1, addr_reg);
1065 tcg_out_ld32_12(s, COND_EQ, data_reg2, TCG_REG_R1, 4);
1066 }
1067 break;
1068 }
1069
1070 label_ptr = (void *) s->code_ptr;
1071 tcg_out_b_noaddr(s, COND_EQ);
1072
1073 /* TODO: move this code to where the constants pool will be */
1074 if (addr_reg != TCG_REG_R0) {
1075 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1076 TCG_REG_R0, 0, addr_reg, SHIFT_IMM_LSL(0));
1077 }
1078 # if TARGET_LONG_BITS == 32
1079 tcg_out_dat_imm(s, COND_AL, ARITH_MOV, TCG_REG_R1, 0, mem_index);
1080 # else
1081 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1082 TCG_REG_R1, 0, addr_reg2, SHIFT_IMM_LSL(0));
1083 tcg_out_dat_imm(s, COND_AL, ARITH_MOV, TCG_REG_R2, 0, mem_index);
1084 # endif
1085 tcg_out_call(s, (tcg_target_long) qemu_ld_helpers[s_bits]);
1086
1087 switch (opc) {
1088 case 0 | 4:
1089 tcg_out_ext8s(s, COND_AL, data_reg, TCG_REG_R0);
1090 break;
1091 case 1 | 4:
1092 tcg_out_ext16s(s, COND_AL, data_reg, TCG_REG_R0);
1093 break;
1094 case 0:
1095 case 1:
1096 case 2:
1097 default:
1098 if (data_reg != TCG_REG_R0) {
1099 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1100 data_reg, 0, TCG_REG_R0, SHIFT_IMM_LSL(0));
1101 }
1102 break;
1103 case 3:
1104 if (data_reg != TCG_REG_R0) {
1105 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1106 data_reg, 0, TCG_REG_R0, SHIFT_IMM_LSL(0));
1107 }
1108 if (data_reg2 != TCG_REG_R1) {
1109 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1110 data_reg2, 0, TCG_REG_R1, SHIFT_IMM_LSL(0));
1111 }
1112 break;
1113 }
1114
1115 reloc_pc24(label_ptr, (tcg_target_long)s->code_ptr);
1116 #else /* !CONFIG_SOFTMMU */
1117 if (GUEST_BASE) {
1118 uint32_t offset = GUEST_BASE;
1119 int i;
1120 int rot;
1121
1122 while (offset) {
1123 i = ctz32(offset) & ~1;
1124 rot = ((32 - i) << 7) & 0xf00;
1125
1126 tcg_out_dat_imm(s, COND_AL, ARITH_ADD, TCG_REG_R8, addr_reg,
1127 ((offset >> i) & 0xff) | rot);
1128 addr_reg = TCG_REG_R8;
1129 offset &= ~(0xff << i);
1130 }
1131 }
1132 switch (opc) {
1133 case 0:
1134 tcg_out_ld8_12(s, COND_AL, data_reg, addr_reg, 0);
1135 break;
1136 case 0 | 4:
1137 tcg_out_ld8s_8(s, COND_AL, data_reg, addr_reg, 0);
1138 break;
1139 case 1:
1140 tcg_out_ld16u_8(s, COND_AL, data_reg, addr_reg, 0);
1141 if (bswap) {
1142 tcg_out_bswap16(s, COND_AL, data_reg, data_reg);
1143 }
1144 break;
1145 case 1 | 4:
1146 if (bswap) {
1147 tcg_out_ld16u_8(s, COND_AL, data_reg, addr_reg, 0);
1148 tcg_out_bswap16s(s, COND_AL, data_reg, data_reg);
1149 } else {
1150 tcg_out_ld16s_8(s, COND_AL, data_reg, addr_reg, 0);
1151 }
1152 break;
1153 case 2:
1154 default:
1155 tcg_out_ld32_12(s, COND_AL, data_reg, addr_reg, 0);
1156 if (bswap) {
1157 tcg_out_bswap32(s, COND_AL, data_reg, data_reg);
1158 }
1159 break;
1160 case 3:
1161 /* TODO: use block load -
1162 * check that data_reg2 > data_reg or the other way */
1163 if (data_reg == addr_reg) {
1164 tcg_out_ld32_12(s, COND_AL, data_reg2, addr_reg, bswap ? 0 : 4);
1165 tcg_out_ld32_12(s, COND_AL, data_reg, addr_reg, bswap ? 4 : 0);
1166 } else {
1167 tcg_out_ld32_12(s, COND_AL, data_reg, addr_reg, bswap ? 4 : 0);
1168 tcg_out_ld32_12(s, COND_AL, data_reg2, addr_reg, bswap ? 0 : 4);
1169 }
1170 if (bswap) {
1171 tcg_out_bswap32(s, COND_AL, data_reg, data_reg);
1172 tcg_out_bswap32(s, COND_AL, data_reg2, data_reg2);
1173 }
1174 break;
1175 }
1176 #endif
1177 }
1178
1179 static inline void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, int opc)
1180 {
1181 int addr_reg, data_reg, data_reg2, bswap;
1182 #ifdef CONFIG_SOFTMMU
1183 int mem_index, s_bits;
1184 # if TARGET_LONG_BITS == 64
1185 int addr_reg2;
1186 # endif
1187 uint32_t *label_ptr;
1188 #endif
1189
1190 #ifdef TARGET_WORDS_BIGENDIAN
1191 bswap = 1;
1192 #else
1193 bswap = 0;
1194 #endif
1195 data_reg = *args++;
1196 if (opc == 3)
1197 data_reg2 = *args++;
1198 else
1199 data_reg2 = 0; /* suppress warning */
1200 addr_reg = *args++;
1201 #ifdef CONFIG_SOFTMMU
1202 # if TARGET_LONG_BITS == 64
1203 addr_reg2 = *args++;
1204 # endif
1205 mem_index = *args;
1206 s_bits = opc & 3;
1207
1208 /* Should generate something like the following:
1209 * shr r8, addr_reg, #TARGET_PAGE_BITS
1210 * and r0, r8, #(CPU_TLB_SIZE - 1) @ Assumption: CPU_TLB_BITS <= 8
1211 * add r0, env, r0 lsl #CPU_TLB_ENTRY_BITS
1212 */
1213 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1214 TCG_REG_R8, 0, addr_reg, SHIFT_IMM_LSR(TARGET_PAGE_BITS));
1215 tcg_out_dat_imm(s, COND_AL, ARITH_AND,
1216 TCG_REG_R0, TCG_REG_R8, CPU_TLB_SIZE - 1);
1217 tcg_out_dat_reg(s, COND_AL, ARITH_ADD, TCG_REG_R0,
1218 TCG_AREG0, TCG_REG_R0, SHIFT_IMM_LSL(CPU_TLB_ENTRY_BITS));
1219 /* In the
1220 * ldr r1 [r0, #(offsetof(CPUState, tlb_table[mem_index][0].addr_write))]
1221 * below, the offset is likely to exceed 12 bits if mem_index != 0 and
1222 * not exceed otherwise, so use an
1223 * add r0, r0, #(mem_index * sizeof *CPUState.tlb_table)
1224 * before.
1225 */
1226 if (mem_index)
1227 tcg_out_dat_imm(s, COND_AL, ARITH_ADD, TCG_REG_R0, TCG_REG_R0,
1228 (mem_index << (TLB_SHIFT & 1)) |
1229 ((16 - (TLB_SHIFT >> 1)) << 8));
1230 tcg_out_ld32_12(s, COND_AL, TCG_REG_R1, TCG_REG_R0,
1231 offsetof(CPUState, tlb_table[0][0].addr_write));
1232 tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0, TCG_REG_R1,
1233 TCG_REG_R8, SHIFT_IMM_LSL(TARGET_PAGE_BITS));
1234 /* Check alignment. */
1235 if (s_bits)
1236 tcg_out_dat_imm(s, COND_EQ, ARITH_TST,
1237 0, addr_reg, (1 << s_bits) - 1);
1238 # if TARGET_LONG_BITS == 64
1239 /* XXX: possibly we could use a block data load or writeback in
1240 * the first access. */
1241 tcg_out_ld32_12(s, COND_EQ, TCG_REG_R1, TCG_REG_R0,
1242 offsetof(CPUState, tlb_table[0][0].addr_write) + 4);
1243 tcg_out_dat_reg(s, COND_EQ, ARITH_CMP, 0,
1244 TCG_REG_R1, addr_reg2, SHIFT_IMM_LSL(0));
1245 # endif
1246 tcg_out_ld32_12(s, COND_EQ, TCG_REG_R1, TCG_REG_R0,
1247 offsetof(CPUState, tlb_table[0][0].addend));
1248
1249 switch (opc) {
1250 case 0:
1251 tcg_out_st8_r(s, COND_EQ, data_reg, addr_reg, TCG_REG_R1);
1252 break;
1253 case 1:
1254 if (bswap) {
1255 tcg_out_bswap16(s, COND_EQ, TCG_REG_R0, data_reg);
1256 tcg_out_st16_r(s, COND_EQ, TCG_REG_R0, addr_reg, TCG_REG_R1);
1257 } else {
1258 tcg_out_st16_r(s, COND_EQ, data_reg, addr_reg, TCG_REG_R1);
1259 }
1260 break;
1261 case 2:
1262 default:
1263 if (bswap) {
1264 tcg_out_bswap32(s, COND_EQ, TCG_REG_R0, data_reg);
1265 tcg_out_st32_r(s, COND_EQ, TCG_REG_R0, addr_reg, TCG_REG_R1);
1266 } else {
1267 tcg_out_st32_r(s, COND_EQ, data_reg, addr_reg, TCG_REG_R1);
1268 }
1269 break;
1270 case 3:
1271 if (bswap) {
1272 tcg_out_bswap32(s, COND_EQ, TCG_REG_R0, data_reg2);
1273 tcg_out_st32_rwb(s, COND_EQ, TCG_REG_R0, TCG_REG_R1, addr_reg);
1274 tcg_out_bswap32(s, COND_EQ, TCG_REG_R0, data_reg);
1275 tcg_out_st32_12(s, COND_EQ, TCG_REG_R0, TCG_REG_R1, 4);
1276 } else {
1277 tcg_out_st32_rwb(s, COND_EQ, data_reg, TCG_REG_R1, addr_reg);
1278 tcg_out_st32_12(s, COND_EQ, data_reg2, TCG_REG_R1, 4);
1279 }
1280 break;
1281 }
1282
1283 label_ptr = (void *) s->code_ptr;
1284 tcg_out_b_noaddr(s, COND_EQ);
1285
1286 /* TODO: move this code to where the constants pool will be */
1287 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1288 TCG_REG_R0, 0, addr_reg, SHIFT_IMM_LSL(0));
1289 # if TARGET_LONG_BITS == 32
1290 switch (opc) {
1291 case 0:
1292 tcg_out_ext8u(s, COND_AL, TCG_REG_R1, data_reg);
1293 tcg_out_dat_imm(s, COND_AL, ARITH_MOV, TCG_REG_R2, 0, mem_index);
1294 break;
1295 case 1:
1296 tcg_out_ext16u(s, COND_AL, TCG_REG_R1, data_reg);
1297 tcg_out_dat_imm(s, COND_AL, ARITH_MOV, TCG_REG_R2, 0, mem_index);
1298 break;
1299 case 2:
1300 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1301 TCG_REG_R1, 0, data_reg, SHIFT_IMM_LSL(0));
1302 tcg_out_dat_imm(s, COND_AL, ARITH_MOV, TCG_REG_R2, 0, mem_index);
1303 break;
1304 case 3:
1305 tcg_out_dat_imm(s, COND_AL, ARITH_MOV, TCG_REG_R8, 0, mem_index);
1306 tcg_out32(s, (COND_AL << 28) | 0x052d8010); /* str r8, [sp, #-0x10]! */
1307 if (data_reg != TCG_REG_R2) {
1308 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1309 TCG_REG_R2, 0, data_reg, SHIFT_IMM_LSL(0));
1310 }
1311 if (data_reg2 != TCG_REG_R3) {
1312 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1313 TCG_REG_R3, 0, data_reg2, SHIFT_IMM_LSL(0));
1314 }
1315 break;
1316 }
1317 # else
1318 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1319 TCG_REG_R1, 0, addr_reg2, SHIFT_IMM_LSL(0));
1320 switch (opc) {
1321 case 0:
1322 tcg_out_ext8u(s, COND_AL, TCG_REG_R2, data_reg);
1323 tcg_out_dat_imm(s, COND_AL, ARITH_MOV, TCG_REG_R3, 0, mem_index);
1324 break;
1325 case 1:
1326 tcg_out_ext16u(s, COND_AL, TCG_REG_R2, data_reg);
1327 tcg_out_dat_imm(s, COND_AL, ARITH_MOV, TCG_REG_R3, 0, mem_index);
1328 break;
1329 case 2:
1330 if (data_reg != TCG_REG_R2) {
1331 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1332 TCG_REG_R2, 0, data_reg, SHIFT_IMM_LSL(0));
1333 }
1334 tcg_out_dat_imm(s, COND_AL, ARITH_MOV, TCG_REG_R3, 0, mem_index);
1335 break;
1336 case 3:
1337 tcg_out_dat_imm(s, COND_AL, ARITH_MOV, TCG_REG_R8, 0, mem_index);
1338 tcg_out32(s, (COND_AL << 28) | 0x052d8010); /* str r8, [sp, #-0x10]! */
1339 if (data_reg != TCG_REG_R2) {
1340 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1341 TCG_REG_R2, 0, data_reg, SHIFT_IMM_LSL(0));
1342 }
1343 if (data_reg2 != TCG_REG_R3) {
1344 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1345 TCG_REG_R3, 0, data_reg2, SHIFT_IMM_LSL(0));
1346 }
1347 break;
1348 }
1349 # endif
1350
1351 tcg_out_call(s, (tcg_target_long) qemu_st_helpers[s_bits]);
1352 if (opc == 3)
1353 tcg_out_dat_imm(s, COND_AL, ARITH_ADD, TCG_REG_R13, TCG_REG_R13, 0x10);
1354
1355 reloc_pc24(label_ptr, (tcg_target_long)s->code_ptr);
1356 #else /* !CONFIG_SOFTMMU */
1357 if (GUEST_BASE) {
1358 uint32_t offset = GUEST_BASE;
1359 int i;
1360 int rot;
1361
1362 while (offset) {
1363 i = ctz32(offset) & ~1;
1364 rot = ((32 - i) << 7) & 0xf00;
1365
1366 tcg_out_dat_imm(s, COND_AL, ARITH_ADD, TCG_REG_R1, addr_reg,
1367 ((offset >> i) & 0xff) | rot);
1368 addr_reg = TCG_REG_R1;
1369 offset &= ~(0xff << i);
1370 }
1371 }
1372 switch (opc) {
1373 case 0:
1374 tcg_out_st8_12(s, COND_AL, data_reg, addr_reg, 0);
1375 break;
1376 case 1:
1377 if (bswap) {
1378 tcg_out_bswap16(s, COND_AL, TCG_REG_R0, data_reg);
1379 tcg_out_st16_8(s, COND_AL, TCG_REG_R0, addr_reg, 0);
1380 } else {
1381 tcg_out_st16_8(s, COND_AL, data_reg, addr_reg, 0);
1382 }
1383 break;
1384 case 2:
1385 default:
1386 if (bswap) {
1387 tcg_out_bswap32(s, COND_AL, TCG_REG_R0, data_reg);
1388 tcg_out_st32_12(s, COND_AL, TCG_REG_R0, addr_reg, 0);
1389 } else {
1390 tcg_out_st32_12(s, COND_AL, data_reg, addr_reg, 0);
1391 }
1392 break;
1393 case 3:
1394 /* TODO: use block store -
1395 * check that data_reg2 > data_reg or the other way */
1396 if (bswap) {
1397 tcg_out_bswap32(s, COND_AL, TCG_REG_R0, data_reg2);
1398 tcg_out_st32_12(s, COND_AL, TCG_REG_R0, addr_reg, 0);
1399 tcg_out_bswap32(s, COND_AL, TCG_REG_R0, data_reg);
1400 tcg_out_st32_12(s, COND_AL, TCG_REG_R0, addr_reg, 4);
1401 } else {
1402 tcg_out_st32_12(s, COND_AL, data_reg, addr_reg, 0);
1403 tcg_out_st32_12(s, COND_AL, data_reg2, addr_reg, 4);
1404 }
1405 break;
1406 }
1407 #endif
1408 }
1409
1410 static uint8_t *tb_ret_addr;
1411
1412 static inline void tcg_out_op(TCGContext *s, TCGOpcode opc,
1413 const TCGArg *args, const int *const_args)
1414 {
1415 int c;
1416
1417 switch (opc) {
1418 case INDEX_op_exit_tb:
1419 {
1420 uint8_t *ld_ptr = s->code_ptr;
1421 if (args[0] >> 8)
1422 tcg_out_ld32_12(s, COND_AL, TCG_REG_R0, TCG_REG_PC, 0);
1423 else
1424 tcg_out_dat_imm(s, COND_AL, ARITH_MOV, TCG_REG_R0, 0, args[0]);
1425 tcg_out_goto(s, COND_AL, (tcg_target_ulong) tb_ret_addr);
1426 if (args[0] >> 8) {
1427 *ld_ptr = (uint8_t) (s->code_ptr - ld_ptr) - 8;
1428 tcg_out32(s, args[0]);
1429 }
1430 }
1431 break;
1432 case INDEX_op_goto_tb:
1433 if (s->tb_jmp_offset) {
1434 /* Direct jump method */
1435 #if defined(USE_DIRECT_JUMP)
1436 s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf;
1437 tcg_out_b_noaddr(s, COND_AL);
1438 #else
1439 tcg_out_ld32_12(s, COND_AL, TCG_REG_PC, TCG_REG_PC, -4);
1440 s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf;
1441 tcg_out32(s, 0);
1442 #endif
1443 } else {
1444 /* Indirect jump method */
1445 #if 1
1446 c = (int) (s->tb_next + args[0]) - ((int) s->code_ptr + 8);
1447 if (c > 0xfff || c < -0xfff) {
1448 tcg_out_movi32(s, COND_AL, TCG_REG_R0,
1449 (tcg_target_long) (s->tb_next + args[0]));
1450 tcg_out_ld32_12(s, COND_AL, TCG_REG_PC, TCG_REG_R0, 0);
1451 } else
1452 tcg_out_ld32_12(s, COND_AL, TCG_REG_PC, TCG_REG_PC, c);
1453 #else
1454 tcg_out_ld32_12(s, COND_AL, TCG_REG_R0, TCG_REG_PC, 0);
1455 tcg_out_ld32_12(s, COND_AL, TCG_REG_PC, TCG_REG_R0, 0);
1456 tcg_out32(s, (tcg_target_long) (s->tb_next + args[0]));
1457 #endif
1458 }
1459 s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf;
1460 break;
1461 case INDEX_op_call:
1462 if (const_args[0])
1463 tcg_out_call(s, args[0]);
1464 else
1465 tcg_out_callr(s, COND_AL, args[0]);
1466 break;
1467 case INDEX_op_jmp:
1468 if (const_args[0])
1469 tcg_out_goto(s, COND_AL, args[0]);
1470 else
1471 tcg_out_bx(s, COND_AL, args[0]);
1472 break;
1473 case INDEX_op_br:
1474 tcg_out_goto_label(s, COND_AL, args[0]);
1475 break;
1476
1477 case INDEX_op_ld8u_i32:
1478 tcg_out_ld8u(s, COND_AL, args[0], args[1], args[2]);
1479 break;
1480 case INDEX_op_ld8s_i32:
1481 tcg_out_ld8s(s, COND_AL, args[0], args[1], args[2]);
1482 break;
1483 case INDEX_op_ld16u_i32:
1484 tcg_out_ld16u(s, COND_AL, args[0], args[1], args[2]);
1485 break;
1486 case INDEX_op_ld16s_i32:
1487 tcg_out_ld16s(s, COND_AL, args[0], args[1], args[2]);
1488 break;
1489 case INDEX_op_ld_i32:
1490 tcg_out_ld32u(s, COND_AL, args[0], args[1], args[2]);
1491 break;
1492 case INDEX_op_st8_i32:
1493 tcg_out_st8(s, COND_AL, args[0], args[1], args[2]);
1494 break;
1495 case INDEX_op_st16_i32:
1496 tcg_out_st16(s, COND_AL, args[0], args[1], args[2]);
1497 break;
1498 case INDEX_op_st_i32:
1499 tcg_out_st32(s, COND_AL, args[0], args[1], args[2]);
1500 break;
1501
1502 case INDEX_op_mov_i32:
1503 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1504 args[0], 0, args[1], SHIFT_IMM_LSL(0));
1505 break;
1506 case INDEX_op_movi_i32:
1507 tcg_out_movi32(s, COND_AL, args[0], args[1]);
1508 break;
1509 case INDEX_op_add_i32:
1510 c = ARITH_ADD;
1511 goto gen_arith;
1512 case INDEX_op_sub_i32:
1513 c = ARITH_SUB;
1514 goto gen_arith;
1515 case INDEX_op_and_i32:
1516 c = ARITH_AND;
1517 goto gen_arith;
1518 case INDEX_op_andc_i32:
1519 c = ARITH_BIC;
1520 goto gen_arith;
1521 case INDEX_op_or_i32:
1522 c = ARITH_ORR;
1523 goto gen_arith;
1524 case INDEX_op_xor_i32:
1525 c = ARITH_EOR;
1526 /* Fall through. */
1527 gen_arith:
1528 if (const_args[2]) {
1529 int rot;
1530 rot = encode_imm(args[2]);
1531 tcg_out_dat_imm(s, COND_AL, c,
1532 args[0], args[1], rotl(args[2], rot) | (rot << 7));
1533 } else
1534 tcg_out_dat_reg(s, COND_AL, c,
1535 args[0], args[1], args[2], SHIFT_IMM_LSL(0));
1536 break;
1537 case INDEX_op_add2_i32:
1538 tcg_out_dat_reg2(s, COND_AL, ARITH_ADD, ARITH_ADC,
1539 args[0], args[1], args[2], args[3],
1540 args[4], args[5], SHIFT_IMM_LSL(0));
1541 break;
1542 case INDEX_op_sub2_i32:
1543 tcg_out_dat_reg2(s, COND_AL, ARITH_SUB, ARITH_SBC,
1544 args[0], args[1], args[2], args[3],
1545 args[4], args[5], SHIFT_IMM_LSL(0));
1546 break;
1547 case INDEX_op_neg_i32:
1548 tcg_out_dat_imm(s, COND_AL, ARITH_RSB, args[0], args[1], 0);
1549 break;
1550 case INDEX_op_not_i32:
1551 tcg_out_dat_reg(s, COND_AL,
1552 ARITH_MVN, args[0], 0, args[1], SHIFT_IMM_LSL(0));
1553 break;
1554 case INDEX_op_mul_i32:
1555 tcg_out_mul32(s, COND_AL, args[0], args[1], args[2]);
1556 break;
1557 case INDEX_op_mulu2_i32:
1558 tcg_out_umull32(s, COND_AL, args[0], args[1], args[2], args[3]);
1559 break;
1560 /* XXX: Perhaps args[2] & 0x1f is wrong */
1561 case INDEX_op_shl_i32:
1562 c = const_args[2] ?
1563 SHIFT_IMM_LSL(args[2] & 0x1f) : SHIFT_REG_LSL(args[2]);
1564 goto gen_shift32;
1565 case INDEX_op_shr_i32:
1566 c = const_args[2] ? (args[2] & 0x1f) ? SHIFT_IMM_LSR(args[2] & 0x1f) :
1567 SHIFT_IMM_LSL(0) : SHIFT_REG_LSR(args[2]);
1568 goto gen_shift32;
1569 case INDEX_op_sar_i32:
1570 c = const_args[2] ? (args[2] & 0x1f) ? SHIFT_IMM_ASR(args[2] & 0x1f) :
1571 SHIFT_IMM_LSL(0) : SHIFT_REG_ASR(args[2]);
1572 goto gen_shift32;
1573 case INDEX_op_rotr_i32:
1574 c = const_args[2] ? (args[2] & 0x1f) ? SHIFT_IMM_ROR(args[2] & 0x1f) :
1575 SHIFT_IMM_LSL(0) : SHIFT_REG_ROR(args[2]);
1576 /* Fall through. */
1577 gen_shift32:
1578 tcg_out_dat_reg(s, COND_AL, ARITH_MOV, args[0], 0, args[1], c);
1579 break;
1580
1581 case INDEX_op_rotl_i32:
1582 if (const_args[2]) {
1583 tcg_out_dat_reg(s, COND_AL, ARITH_MOV, args[0], 0, args[1],
1584 ((0x20 - args[2]) & 0x1f) ?
1585 SHIFT_IMM_ROR((0x20 - args[2]) & 0x1f) :
1586 SHIFT_IMM_LSL(0));
1587 } else {
1588 tcg_out_dat_imm(s, COND_AL, ARITH_RSB, TCG_REG_R8, args[1], 0x20);
1589 tcg_out_dat_reg(s, COND_AL, ARITH_MOV, args[0], 0, args[1],
1590 SHIFT_REG_ROR(TCG_REG_R8));
1591 }
1592 break;
1593
1594 case INDEX_op_brcond_i32:
1595 if (const_args[1]) {
1596 int rot;
1597 rot = encode_imm(args[1]);
1598 tcg_out_dat_imm(s, COND_AL, ARITH_CMP, 0,
1599 args[0], rotl(args[1], rot) | (rot << 7));
1600 } else {
1601 tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0,
1602 args[0], args[1], SHIFT_IMM_LSL(0));
1603 }
1604 tcg_out_goto_label(s, tcg_cond_to_arm_cond[args[2]], args[3]);
1605 break;
1606 case INDEX_op_brcond2_i32:
1607 /* The resulting conditions are:
1608 * TCG_COND_EQ --> a0 == a2 && a1 == a3,
1609 * TCG_COND_NE --> (a0 != a2 && a1 == a3) || a1 != a3,
1610 * TCG_COND_LT(U) --> (a0 < a2 && a1 == a3) || a1 < a3,
1611 * TCG_COND_GE(U) --> (a0 >= a2 && a1 == a3) || (a1 >= a3 && a1 != a3),
1612 * TCG_COND_LE(U) --> (a0 <= a2 && a1 == a3) || (a1 <= a3 && a1 != a3),
1613 * TCG_COND_GT(U) --> (a0 > a2 && a1 == a3) || a1 > a3,
1614 */
1615 tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0,
1616 args[1], args[3], SHIFT_IMM_LSL(0));
1617 tcg_out_dat_reg(s, COND_EQ, ARITH_CMP, 0,
1618 args[0], args[2], SHIFT_IMM_LSL(0));
1619 tcg_out_goto_label(s, tcg_cond_to_arm_cond[args[4]], args[5]);
1620 break;
1621 case INDEX_op_setcond_i32:
1622 if (const_args[2]) {
1623 int rot;
1624 rot = encode_imm(args[2]);
1625 tcg_out_dat_imm(s, COND_AL, ARITH_CMP, 0,
1626 args[1], rotl(args[2], rot) | (rot << 7));
1627 } else {
1628 tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0,
1629 args[1], args[2], SHIFT_IMM_LSL(0));
1630 }
1631 tcg_out_dat_imm(s, tcg_cond_to_arm_cond[args[3]],
1632 ARITH_MOV, args[0], 0, 1);
1633 tcg_out_dat_imm(s, tcg_cond_to_arm_cond[tcg_invert_cond(args[3])],
1634 ARITH_MOV, args[0], 0, 0);
1635 break;
1636 case INDEX_op_setcond2_i32:
1637 /* See brcond2_i32 comment */
1638 tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0,
1639 args[2], args[4], SHIFT_IMM_LSL(0));
1640 tcg_out_dat_reg(s, COND_EQ, ARITH_CMP, 0,
1641 args[1], args[3], SHIFT_IMM_LSL(0));
1642 tcg_out_dat_imm(s, tcg_cond_to_arm_cond[args[5]],
1643 ARITH_MOV, args[0], 0, 1);
1644 tcg_out_dat_imm(s, tcg_cond_to_arm_cond[tcg_invert_cond(args[5])],
1645 ARITH_MOV, args[0], 0, 0);
1646 break;
1647
1648 case INDEX_op_qemu_ld8u:
1649 tcg_out_qemu_ld(s, args, 0);
1650 break;
1651 case INDEX_op_qemu_ld8s:
1652 tcg_out_qemu_ld(s, args, 0 | 4);
1653 break;
1654 case INDEX_op_qemu_ld16u:
1655 tcg_out_qemu_ld(s, args, 1);
1656 break;
1657 case INDEX_op_qemu_ld16s:
1658 tcg_out_qemu_ld(s, args, 1 | 4);
1659 break;
1660 case INDEX_op_qemu_ld32:
1661 tcg_out_qemu_ld(s, args, 2);
1662 break;
1663 case INDEX_op_qemu_ld64:
1664 tcg_out_qemu_ld(s, args, 3);
1665 break;
1666
1667 case INDEX_op_qemu_st8:
1668 tcg_out_qemu_st(s, args, 0);
1669 break;
1670 case INDEX_op_qemu_st16:
1671 tcg_out_qemu_st(s, args, 1);
1672 break;
1673 case INDEX_op_qemu_st32:
1674 tcg_out_qemu_st(s, args, 2);
1675 break;
1676 case INDEX_op_qemu_st64:
1677 tcg_out_qemu_st(s, args, 3);
1678 break;
1679
1680 case INDEX_op_bswap16_i32:
1681 tcg_out_bswap16(s, COND_AL, args[0], args[1]);
1682 break;
1683 case INDEX_op_bswap32_i32:
1684 tcg_out_bswap32(s, COND_AL, args[0], args[1]);
1685 break;
1686
1687 case INDEX_op_ext8s_i32:
1688 tcg_out_ext8s(s, COND_AL, args[0], args[1]);
1689 break;
1690 case INDEX_op_ext16s_i32:
1691 tcg_out_ext16s(s, COND_AL, args[0], args[1]);
1692 break;
1693 case INDEX_op_ext16u_i32:
1694 tcg_out_ext16u(s, COND_AL, args[0], args[1]);
1695 break;
1696
1697 default:
1698 tcg_abort();
1699 }
1700 }
1701
1702 static const TCGTargetOpDef arm_op_defs[] = {
1703 { INDEX_op_exit_tb, { } },
1704 { INDEX_op_goto_tb, { } },
1705 { INDEX_op_call, { "ri" } },
1706 { INDEX_op_jmp, { "ri" } },
1707 { INDEX_op_br, { } },
1708
1709 { INDEX_op_mov_i32, { "r", "r" } },
1710 { INDEX_op_movi_i32, { "r" } },
1711
1712 { INDEX_op_ld8u_i32, { "r", "r" } },
1713 { INDEX_op_ld8s_i32, { "r", "r" } },
1714 { INDEX_op_ld16u_i32, { "r", "r" } },
1715 { INDEX_op_ld16s_i32, { "r", "r" } },
1716 { INDEX_op_ld_i32, { "r", "r" } },
1717 { INDEX_op_st8_i32, { "r", "r" } },
1718 { INDEX_op_st16_i32, { "r", "r" } },
1719 { INDEX_op_st_i32, { "r", "r" } },
1720
1721 /* TODO: "r", "r", "ri" */
1722 { INDEX_op_add_i32, { "r", "r", "rI" } },
1723 { INDEX_op_sub_i32, { "r", "r", "rI" } },
1724 { INDEX_op_mul_i32, { "r", "r", "r" } },
1725 { INDEX_op_mulu2_i32, { "r", "r", "r", "r" } },
1726 { INDEX_op_and_i32, { "r", "r", "rI" } },
1727 { INDEX_op_andc_i32, { "r", "r", "rI" } },
1728 { INDEX_op_or_i32, { "r", "r", "rI" } },
1729 { INDEX_op_xor_i32, { "r", "r", "rI" } },
1730 { INDEX_op_neg_i32, { "r", "r" } },
1731 { INDEX_op_not_i32, { "r", "r" } },
1732
1733 { INDEX_op_shl_i32, { "r", "r", "ri" } },
1734 { INDEX_op_shr_i32, { "r", "r", "ri" } },
1735 { INDEX_op_sar_i32, { "r", "r", "ri" } },
1736 { INDEX_op_rotl_i32, { "r", "r", "ri" } },
1737 { INDEX_op_rotr_i32, { "r", "r", "ri" } },
1738
1739 { INDEX_op_brcond_i32, { "r", "rI" } },
1740 { INDEX_op_setcond_i32, { "r", "r", "rI" } },
1741
1742 /* TODO: "r", "r", "r", "r", "ri", "ri" */
1743 { INDEX_op_add2_i32, { "r", "r", "r", "r", "r", "r" } },
1744 { INDEX_op_sub2_i32, { "r", "r", "r", "r", "r", "r" } },
1745 { INDEX_op_brcond2_i32, { "r", "r", "r", "r" } },
1746 { INDEX_op_setcond2_i32, { "r", "r", "r", "r", "r" } },
1747
1748 #if TARGET_LONG_BITS == 32
1749 { INDEX_op_qemu_ld8u, { "r", "l" } },
1750 { INDEX_op_qemu_ld8s, { "r", "l" } },
1751 { INDEX_op_qemu_ld16u, { "r", "l" } },
1752 { INDEX_op_qemu_ld16s, { "r", "l" } },
1753 { INDEX_op_qemu_ld32, { "r", "l" } },
1754 { INDEX_op_qemu_ld64, { "L", "L", "l" } },
1755
1756 { INDEX_op_qemu_st8, { "s", "s" } },
1757 { INDEX_op_qemu_st16, { "s", "s" } },
1758 { INDEX_op_qemu_st32, { "s", "s" } },
1759 { INDEX_op_qemu_st64, { "S", "S", "s" } },
1760 #else
1761 { INDEX_op_qemu_ld8u, { "r", "l", "l" } },
1762 { INDEX_op_qemu_ld8s, { "r", "l", "l" } },
1763 { INDEX_op_qemu_ld16u, { "r", "l", "l" } },
1764 { INDEX_op_qemu_ld16s, { "r", "l", "l" } },
1765 { INDEX_op_qemu_ld32, { "r", "l", "l" } },
1766 { INDEX_op_qemu_ld64, { "L", "L", "l", "l" } },
1767
1768 { INDEX_op_qemu_st8, { "s", "s", "s" } },
1769 { INDEX_op_qemu_st16, { "s", "s", "s" } },
1770 { INDEX_op_qemu_st32, { "s", "s", "s" } },
1771 { INDEX_op_qemu_st64, { "S", "S", "s", "s" } },
1772 #endif
1773
1774 { INDEX_op_bswap16_i32, { "r", "r" } },
1775 { INDEX_op_bswap32_i32, { "r", "r" } },
1776
1777 { INDEX_op_ext8s_i32, { "r", "r" } },
1778 { INDEX_op_ext16s_i32, { "r", "r" } },
1779 { INDEX_op_ext16u_i32, { "r", "r" } },
1780
1781 { -1 },
1782 };
1783
1784 static void tcg_target_init(TCGContext *s)
1785 {
1786 #if !defined(CONFIG_USER_ONLY)
1787 /* fail safe */
1788 if ((1 << CPU_TLB_ENTRY_BITS) != sizeof(CPUTLBEntry))
1789 tcg_abort();
1790 #endif
1791
1792 tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0, 0xffff);
1793 tcg_regset_set32(tcg_target_call_clobber_regs, 0,
1794 (1 << TCG_REG_R0) |
1795 (1 << TCG_REG_R1) |
1796 (1 << TCG_REG_R2) |
1797 (1 << TCG_REG_R3) |
1798 (1 << TCG_REG_R12) |
1799 (1 << TCG_REG_R14));
1800
1801 tcg_regset_clear(s->reserved_regs);
1802 tcg_regset_set_reg(s->reserved_regs, TCG_REG_CALL_STACK);
1803 tcg_regset_set_reg(s->reserved_regs, TCG_REG_R8);
1804 tcg_regset_set_reg(s->reserved_regs, TCG_REG_PC);
1805
1806 tcg_add_target_add_op_defs(arm_op_defs);
1807 tcg_set_frame(s, TCG_AREG0, offsetof(CPUState, temp_buf),
1808 CPU_TEMP_BUF_NLONGS * sizeof(long));
1809 }
1810
1811 static inline void tcg_out_ld(TCGContext *s, TCGType type, int arg,
1812 int arg1, tcg_target_long arg2)
1813 {
1814 tcg_out_ld32u(s, COND_AL, arg, arg1, arg2);
1815 }
1816
1817 static inline void tcg_out_st(TCGContext *s, TCGType type, int arg,
1818 int arg1, tcg_target_long arg2)
1819 {
1820 tcg_out_st32(s, COND_AL, arg, arg1, arg2);
1821 }
1822
1823 static void tcg_out_addi(TCGContext *s, int reg, tcg_target_long val)
1824 {
1825 if (val > 0)
1826 if (val < 0x100)
1827 tcg_out_dat_imm(s, COND_AL, ARITH_ADD, reg, reg, val);
1828 else
1829 tcg_abort();
1830 else if (val < 0) {
1831 if (val > -0x100)
1832 tcg_out_dat_imm(s, COND_AL, ARITH_SUB, reg, reg, -val);
1833 else
1834 tcg_abort();
1835 }
1836 }
1837
1838 static inline void tcg_out_mov(TCGContext *s, TCGType type, int ret, int arg)
1839 {
1840 tcg_out_dat_reg(s, COND_AL, ARITH_MOV, ret, 0, arg, SHIFT_IMM_LSL(0));
1841 }
1842
1843 static inline void tcg_out_movi(TCGContext *s, TCGType type,
1844 int ret, tcg_target_long arg)
1845 {
1846 tcg_out_movi32(s, COND_AL, ret, arg);
1847 }
1848
1849 static void tcg_target_qemu_prologue(TCGContext *s)
1850 {
1851 /* Calling convention requires us to save r4-r11 and lr;
1852 * save also r12 to maintain stack 8-alignment.
1853 */
1854
1855 /* stmdb sp!, { r4 - r12, lr } */
1856 tcg_out32(s, (COND_AL << 28) | 0x092d5ff0);
1857
1858 tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]);
1859
1860 tcg_out_bx(s, COND_AL, tcg_target_call_iarg_regs[1]);
1861 tb_ret_addr = s->code_ptr;
1862
1863 /* ldmia sp!, { r4 - r12, pc } */
1864 tcg_out32(s, (COND_AL << 28) | 0x08bd9ff0);
1865 }
various patches