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target-sh4: MMU: fix ITLB priviledge check
[qemu/aliguori-queue.git] / tcg / arm / tcg-target.c
blobf8d626d0297ec93d10bc7dc438c10da4ecd1d5f3
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 #ifndef NDEBUG
26 static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
27 "%r0",
28 "%r1",
29 "%r2",
30 "%r3",
31 "%r4",
32 "%r5",
33 "%r6",
34 "%r7",
35 "%r8",
36 "%r9",
37 "%r10",
38 "%r11",
39 "%r12",
40 "%r13",
41 "%r14",
42 };
43 #endif
44
45 static const int tcg_target_reg_alloc_order[] = {
46 TCG_REG_R0,
47 TCG_REG_R1,
48 TCG_REG_R2,
49 TCG_REG_R3,
50 TCG_REG_R4,
51 TCG_REG_R5,
52 TCG_REG_R6,
53 TCG_REG_R7,
54 TCG_REG_R8,
55 TCG_REG_R9,
56 TCG_REG_R10,
57 TCG_REG_R11,
58 TCG_REG_R12,
59 TCG_REG_R13,
60 TCG_REG_R14,
61 };
62
63 static const int tcg_target_call_iarg_regs[4] = {
64 TCG_REG_R0, TCG_REG_R1, TCG_REG_R2, TCG_REG_R3
65 };
66 static const int tcg_target_call_oarg_regs[2] = {
67 TCG_REG_R0, TCG_REG_R1
68 };
69
70 static void patch_reloc(uint8_t *code_ptr, int type,
71 tcg_target_long value, tcg_target_long addend)
72 {
73 switch (type) {
74 case R_ARM_ABS32:
75 *(uint32_t *) code_ptr = value;
76 break;
77
78 case R_ARM_CALL:
79 case R_ARM_JUMP24:
80 default:
81 tcg_abort();
82
83 case R_ARM_PC24:
84 *(uint32_t *) code_ptr = ((*(uint32_t *) code_ptr) & 0xff000000) |
85 (((value - ((tcg_target_long) code_ptr + 8)) >> 2) & 0xffffff);
86 break;
87 }
88 }
89
90 /* maximum number of register used for input function arguments */
91 static inline int tcg_target_get_call_iarg_regs_count(int flags)
92 {
93 return 4;
94 }
95
96 /* parse target specific constraints */
97 static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
98 {
99 const char *ct_str;
100
101 ct_str = *pct_str;
102 switch (ct_str[0]) {
103 case 'I':
104 ct->ct |= TCG_CT_CONST_ARM;
105 break;
106
107 case 'r':
108 #ifndef CONFIG_SOFTMMU
109 case 'd':
110 case 'D':
111 case 'x':
112 case 'X':
113 #endif
114 ct->ct |= TCG_CT_REG;
115 tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1);
116 break;
117
118 #ifdef CONFIG_SOFTMMU
119 /* qemu_ld/st inputs (unless 'X', 'd' or 'D') */
120 case 'x':
121 ct->ct |= TCG_CT_REG;
122 tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1);
123 tcg_regset_reset_reg(ct->u.regs, TCG_REG_R0);
124 tcg_regset_reset_reg(ct->u.regs, TCG_REG_R1);
125 break;
126
127 /* qemu_ld64 data_reg */
128 case 'd':
129 ct->ct |= TCG_CT_REG;
130 tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1);
131 /* r1 is still needed to load data_reg2, so don't use it. */
132 tcg_regset_reset_reg(ct->u.regs, TCG_REG_R1);
133 break;
134
135 /* qemu_ld/st64 data_reg2 */
136 case 'D':
137 ct->ct |= TCG_CT_REG;
138 tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1);
139 /* r0, r1 and optionally r2 will be overwritten by the address
140 * and the low word of data, so don't use these. */
141 tcg_regset_reset_reg(ct->u.regs, TCG_REG_R0);
142 tcg_regset_reset_reg(ct->u.regs, TCG_REG_R1);
143 # if TARGET_LONG_BITS == 64
144 tcg_regset_reset_reg(ct->u.regs, TCG_REG_R2);
145 # endif
146 break;
147
148 # if TARGET_LONG_BITS == 64
149 /* qemu_ld/st addr_reg2 */
150 case 'X':
151 ct->ct |= TCG_CT_REG;
152 tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1);
153 /* r0 will be overwritten by the low word of base, so don't use it. */
154 tcg_regset_reset_reg(ct->u.regs, TCG_REG_R0);
155 tcg_regset_reset_reg(ct->u.regs, TCG_REG_R1);
156 break;
157 # endif
158 #endif
159
160 case '1':
161 ct->ct |= TCG_CT_REG;
162 tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1);
163 tcg_regset_reset_reg(ct->u.regs, TCG_REG_R0);
164 break;
165
166 case '2':
167 ct->ct |= TCG_CT_REG;
168 tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1);
169 tcg_regset_reset_reg(ct->u.regs, TCG_REG_R0);
170 tcg_regset_reset_reg(ct->u.regs, TCG_REG_R1);
171 break;
172
173 default:
174 return -1;
175 }
176 ct_str++;
177 *pct_str = ct_str;
178
179 return 0;
180 }
181
182 static inline uint32_t rotl(uint32_t val, int n)
183 {
184 return (val << n) | (val >> (32 - n));
185 }
186
187 /* ARM immediates for ALU instructions are made of an unsigned 8-bit
188 right-rotated by an even amount between 0 and 30. */
189 static inline int encode_imm(uint32_t imm)
190 {
191 int shift;
192
193 /* simple case, only lower bits */
194 if ((imm & ~0xff) == 0)
195 return 0;
196 /* then try a simple even shift */
197 shift = ctz32(imm) & ~1;
198 if (((imm >> shift) & ~0xff) == 0)
199 return 32 - shift;
200 /* now try harder with rotations */
201 if ((rotl(imm, 2) & ~0xff) == 0)
202 return 2;
203 if ((rotl(imm, 4) & ~0xff) == 0)
204 return 4;
205 if ((rotl(imm, 6) & ~0xff) == 0)
206 return 6;
207 /* imm can't be encoded */
208 return -1;
209 }
210
211 static inline int check_fit_imm(uint32_t imm)
212 {
213 return encode_imm(imm) >= 0;
214 }
215
216 /* Test if a constant matches the constraint.
217 * TODO: define constraints for:
218 *
219 * ldr/str offset: between -0xfff and 0xfff
220 * ldrh/strh offset: between -0xff and 0xff
221 * mov operand2: values represented with x << (2 * y), x < 0x100
222 * add, sub, eor...: ditto
223 */
224 static inline int tcg_target_const_match(tcg_target_long val,
225 const TCGArgConstraint *arg_ct)
226 {
227 int ct;
228 ct = arg_ct->ct;
229 if (ct & TCG_CT_CONST)
230 return 1;
231 else if ((ct & TCG_CT_CONST_ARM) && check_fit_imm(val))
232 return 1;
233 else
234 return 0;
235 }
236
237 enum arm_data_opc_e {
238 ARITH_AND = 0x0,
239 ARITH_EOR = 0x1,
240 ARITH_SUB = 0x2,
241 ARITH_RSB = 0x3,
242 ARITH_ADD = 0x4,
243 ARITH_ADC = 0x5,
244 ARITH_SBC = 0x6,
245 ARITH_RSC = 0x7,
246 ARITH_TST = 0x8,
247 ARITH_CMP = 0xa,
248 ARITH_CMN = 0xb,
249 ARITH_ORR = 0xc,
250 ARITH_MOV = 0xd,
251 ARITH_BIC = 0xe,
252 ARITH_MVN = 0xf,
253 };
254
255 #define TO_CPSR(opc) \
256 ((opc == ARITH_CMP || opc == ARITH_CMN || opc == ARITH_TST) << 20)
257
258 #define SHIFT_IMM_LSL(im) (((im) << 7) | 0x00)
259 #define SHIFT_IMM_LSR(im) (((im) << 7) | 0x20)
260 #define SHIFT_IMM_ASR(im) (((im) << 7) | 0x40)
261 #define SHIFT_IMM_ROR(im) (((im) << 7) | 0x60)
262 #define SHIFT_REG_LSL(rs) (((rs) << 8) | 0x10)
263 #define SHIFT_REG_LSR(rs) (((rs) << 8) | 0x30)
264 #define SHIFT_REG_ASR(rs) (((rs) << 8) | 0x50)
265 #define SHIFT_REG_ROR(rs) (((rs) << 8) | 0x70)
266
267 enum arm_cond_code_e {
268 COND_EQ = 0x0,
269 COND_NE = 0x1,
270 COND_CS = 0x2, /* Unsigned greater or equal */
271 COND_CC = 0x3, /* Unsigned less than */
272 COND_MI = 0x4, /* Negative */
273 COND_PL = 0x5, /* Zero or greater */
274 COND_VS = 0x6, /* Overflow */
275 COND_VC = 0x7, /* No overflow */
276 COND_HI = 0x8, /* Unsigned greater than */
277 COND_LS = 0x9, /* Unsigned less or equal */
278 COND_GE = 0xa,
279 COND_LT = 0xb,
280 COND_GT = 0xc,
281 COND_LE = 0xd,
282 COND_AL = 0xe,
283 };
284
285 static const uint8_t tcg_cond_to_arm_cond[10] = {
286 [TCG_COND_EQ] = COND_EQ,
287 [TCG_COND_NE] = COND_NE,
288 [TCG_COND_LT] = COND_LT,
289 [TCG_COND_GE] = COND_GE,
290 [TCG_COND_LE] = COND_LE,
291 [TCG_COND_GT] = COND_GT,
292 /* unsigned */
293 [TCG_COND_LTU] = COND_CC,
294 [TCG_COND_GEU] = COND_CS,
295 [TCG_COND_LEU] = COND_LS,
296 [TCG_COND_GTU] = COND_HI,
297 };
298
299 static inline void tcg_out_bx(TCGContext *s, int cond, int rn)
300 {
301 tcg_out32(s, (cond << 28) | 0x012fff10 | rn);
302 }
303
304 static inline void tcg_out_b(TCGContext *s, int cond, int32_t offset)
305 {
306 tcg_out32(s, (cond << 28) | 0x0a000000 |
307 (((offset - 8) >> 2) & 0x00ffffff));
308 }
309
310 static inline void tcg_out_b_noaddr(TCGContext *s, int cond)
311 {
312 #ifdef HOST_WORDS_BIGENDIAN
313 tcg_out8(s, (cond << 4) | 0x0a);
314 s->code_ptr += 3;
315 #else
316 s->code_ptr += 3;
317 tcg_out8(s, (cond << 4) | 0x0a);
318 #endif
319 }
320
321 static inline void tcg_out_bl(TCGContext *s, int cond, int32_t offset)
322 {
323 tcg_out32(s, (cond << 28) | 0x0b000000 |
324 (((offset - 8) >> 2) & 0x00ffffff));
325 }
326
327 static inline void tcg_out_dat_reg(TCGContext *s,
328 int cond, int opc, int rd, int rn, int rm, int shift)
329 {
330 tcg_out32(s, (cond << 28) | (0 << 25) | (opc << 21) | TO_CPSR(opc) |
331 (rn << 16) | (rd << 12) | shift | rm);
332 }
333
334 static inline void tcg_out_dat_reg2(TCGContext *s,
335 int cond, int opc0, int opc1, int rd0, int rd1,
336 int rn0, int rn1, int rm0, int rm1, int shift)
337 {
338 if (rd0 == rn1 || rd0 == rm1) {
339 tcg_out32(s, (cond << 28) | (0 << 25) | (opc0 << 21) | (1 << 20) |
340 (rn0 << 16) | (8 << 12) | shift | rm0);
341 tcg_out32(s, (cond << 28) | (0 << 25) | (opc1 << 21) |
342 (rn1 << 16) | (rd1 << 12) | shift | rm1);
343 tcg_out_dat_reg(s, cond, ARITH_MOV,
344 rd0, 0, TCG_REG_R8, SHIFT_IMM_LSL(0));
345 } else {
346 tcg_out32(s, (cond << 28) | (0 << 25) | (opc0 << 21) | (1 << 20) |
347 (rn0 << 16) | (rd0 << 12) | shift | rm0);
348 tcg_out32(s, (cond << 28) | (0 << 25) | (opc1 << 21) |
349 (rn1 << 16) | (rd1 << 12) | shift | rm1);
350 }
351 }
352
353 static inline void tcg_out_dat_imm(TCGContext *s,
354 int cond, int opc, int rd, int rn, int im)
355 {
356 tcg_out32(s, (cond << 28) | (1 << 25) | (opc << 21) | TO_CPSR(opc) |
357 (rn << 16) | (rd << 12) | im);
358 }
359
360 static inline void tcg_out_movi32(TCGContext *s,
361 int cond, int rd, int32_t arg)
362 {
363 int offset = (uint32_t) arg - ((uint32_t) s->code_ptr + 8);
364
365 /* TODO: This is very suboptimal, we can easily have a constant
366 * pool somewhere after all the instructions. */
367
368 if (arg < 0 && arg > -0x100)
369 return tcg_out_dat_imm(s, cond, ARITH_MVN, rd, 0, (~arg) & 0xff);
370
371 if (offset < 0x100 && offset > -0x100)
372 return offset >= 0 ?
373 tcg_out_dat_imm(s, cond, ARITH_ADD, rd, 15, offset) :
374 tcg_out_dat_imm(s, cond, ARITH_SUB, rd, 15, -offset);
375
376 #ifdef __ARM_ARCH_7A__
377 /* use movw/movt */
378 /* movw */
379 tcg_out32(s, (cond << 28) | 0x03000000 | (rd << 12)
380 | ((arg << 4) & 0x000f0000) | (arg & 0xfff));
381 if (arg & 0xffff0000)
382 /* movt */
383 tcg_out32(s, (cond << 28) | 0x03400000 | (rd << 12)
384 | ((arg >> 12) & 0x000f0000) | ((arg >> 16) & 0xfff));
385 #else
386 tcg_out_dat_imm(s, cond, ARITH_MOV, rd, 0, arg & 0xff);
387 if (arg & 0x0000ff00)
388 tcg_out_dat_imm(s, cond, ARITH_ORR, rd, rd,
389 ((arg >> 8) & 0xff) | 0xc00);
390 if (arg & 0x00ff0000)
391 tcg_out_dat_imm(s, cond, ARITH_ORR, rd, rd,
392 ((arg >> 16) & 0xff) | 0x800);
393 if (arg & 0xff000000)
394 tcg_out_dat_imm(s, cond, ARITH_ORR, rd, rd,
395 ((arg >> 24) & 0xff) | 0x400);
396 #endif
397 }
398
399 static inline void tcg_out_mul32(TCGContext *s,
400 int cond, int rd, int rs, int rm)
401 {
402 if (rd != rm)
403 tcg_out32(s, (cond << 28) | (rd << 16) | (0 << 12) |
404 (rs << 8) | 0x90 | rm);
405 else if (rd != rs)
406 tcg_out32(s, (cond << 28) | (rd << 16) | (0 << 12) |
407 (rm << 8) | 0x90 | rs);
408 else {
409 tcg_out32(s, (cond << 28) | ( 8 << 16) | (0 << 12) |
410 (rs << 8) | 0x90 | rm);
411 tcg_out_dat_reg(s, cond, ARITH_MOV,
412 rd, 0, 8, SHIFT_IMM_LSL(0));
413 }
414 }
415
416 static inline void tcg_out_umull32(TCGContext *s,
417 int cond, int rd0, int rd1, int rs, int rm)
418 {
419 if (rd0 != rm && rd1 != rm)
420 tcg_out32(s, (cond << 28) | 0x800090 |
421 (rd1 << 16) | (rd0 << 12) | (rs << 8) | rm);
422 else if (rd0 != rs && rd1 != rs)
423 tcg_out32(s, (cond << 28) | 0x800090 |
424 (rd1 << 16) | (rd0 << 12) | (rm << 8) | rs);
425 else {
426 tcg_out_dat_reg(s, cond, ARITH_MOV,
427 TCG_REG_R8, 0, rm, SHIFT_IMM_LSL(0));
428 tcg_out32(s, (cond << 28) | 0x800098 |
429 (rd1 << 16) | (rd0 << 12) | (rs << 8));
430 }
431 }
432
433 static inline void tcg_out_smull32(TCGContext *s,
434 int cond, int rd0, int rd1, int rs, int rm)
435 {
436 if (rd0 != rm && rd1 != rm)
437 tcg_out32(s, (cond << 28) | 0xc00090 |
438 (rd1 << 16) | (rd0 << 12) | (rs << 8) | rm);
439 else if (rd0 != rs && rd1 != rs)
440 tcg_out32(s, (cond << 28) | 0xc00090 |
441 (rd1 << 16) | (rd0 << 12) | (rm << 8) | rs);
442 else {
443 tcg_out_dat_reg(s, cond, ARITH_MOV,
444 TCG_REG_R8, 0, rm, SHIFT_IMM_LSL(0));
445 tcg_out32(s, (cond << 28) | 0xc00098 |
446 (rd1 << 16) | (rd0 << 12) | (rs << 8));
447 }
448 }
449
450 static inline void tcg_out_ld32_12(TCGContext *s, int cond,
451 int rd, int rn, tcg_target_long im)
452 {
453 if (im >= 0)
454 tcg_out32(s, (cond << 28) | 0x05900000 |
455 (rn << 16) | (rd << 12) | (im & 0xfff));
456 else
457 tcg_out32(s, (cond << 28) | 0x05100000 |
458 (rn << 16) | (rd << 12) | ((-im) & 0xfff));
459 }
460
461 static inline void tcg_out_st32_12(TCGContext *s, int cond,
462 int rd, int rn, tcg_target_long im)
463 {
464 if (im >= 0)
465 tcg_out32(s, (cond << 28) | 0x05800000 |
466 (rn << 16) | (rd << 12) | (im & 0xfff));
467 else
468 tcg_out32(s, (cond << 28) | 0x05000000 |
469 (rn << 16) | (rd << 12) | ((-im) & 0xfff));
470 }
471
472 static inline void tcg_out_ld32_r(TCGContext *s, int cond,
473 int rd, int rn, int rm)
474 {
475 tcg_out32(s, (cond << 28) | 0x07900000 |
476 (rn << 16) | (rd << 12) | rm);
477 }
478
479 static inline void tcg_out_st32_r(TCGContext *s, int cond,
480 int rd, int rn, int rm)
481 {
482 tcg_out32(s, (cond << 28) | 0x07800000 |
483 (rn << 16) | (rd << 12) | rm);
484 }
485
486 /* Register pre-increment with base writeback. */
487 static inline void tcg_out_ld32_rwb(TCGContext *s, int cond,
488 int rd, int rn, int rm)
489 {
490 tcg_out32(s, (cond << 28) | 0x07b00000 |
491 (rn << 16) | (rd << 12) | rm);
492 }
493
494 static inline void tcg_out_st32_rwb(TCGContext *s, int cond,
495 int rd, int rn, int rm)
496 {
497 tcg_out32(s, (cond << 28) | 0x07a00000 |
498 (rn << 16) | (rd << 12) | rm);
499 }
500
501 static inline void tcg_out_ld16u_8(TCGContext *s, int cond,
502 int rd, int rn, tcg_target_long im)
503 {
504 if (im >= 0)
505 tcg_out32(s, (cond << 28) | 0x01d000b0 |
506 (rn << 16) | (rd << 12) |
507 ((im & 0xf0) << 4) | (im & 0xf));
508 else
509 tcg_out32(s, (cond << 28) | 0x015000b0 |
510 (rn << 16) | (rd << 12) |
511 (((-im) & 0xf0) << 4) | ((-im) & 0xf));
512 }
513
514 static inline void tcg_out_st16u_8(TCGContext *s, int cond,
515 int rd, int rn, tcg_target_long im)
516 {
517 if (im >= 0)
518 tcg_out32(s, (cond << 28) | 0x01c000b0 |
519 (rn << 16) | (rd << 12) |
520 ((im & 0xf0) << 4) | (im & 0xf));
521 else
522 tcg_out32(s, (cond << 28) | 0x014000b0 |
523 (rn << 16) | (rd << 12) |
524 (((-im) & 0xf0) << 4) | ((-im) & 0xf));
525 }
526
527 static inline void tcg_out_ld16u_r(TCGContext *s, int cond,
528 int rd, int rn, int rm)
529 {
530 tcg_out32(s, (cond << 28) | 0x019000b0 |
531 (rn << 16) | (rd << 12) | rm);
532 }
533
534 static inline void tcg_out_st16u_r(TCGContext *s, int cond,
535 int rd, int rn, int rm)
536 {
537 tcg_out32(s, (cond << 28) | 0x018000b0 |
538 (rn << 16) | (rd << 12) | rm);
539 }
540
541 static inline void tcg_out_ld16s_8(TCGContext *s, int cond,
542 int rd, int rn, tcg_target_long im)
543 {
544 if (im >= 0)
545 tcg_out32(s, (cond << 28) | 0x01d000f0 |
546 (rn << 16) | (rd << 12) |
547 ((im & 0xf0) << 4) | (im & 0xf));
548 else
549 tcg_out32(s, (cond << 28) | 0x015000f0 |
550 (rn << 16) | (rd << 12) |
551 (((-im) & 0xf0) << 4) | ((-im) & 0xf));
552 }
553
554 static inline void tcg_out_st16s_8(TCGContext *s, int cond,
555 int rd, int rn, tcg_target_long im)
556 {
557 if (im >= 0)
558 tcg_out32(s, (cond << 28) | 0x01c000f0 |
559 (rn << 16) | (rd << 12) |
560 ((im & 0xf0) << 4) | (im & 0xf));
561 else
562 tcg_out32(s, (cond << 28) | 0x014000f0 |
563 (rn << 16) | (rd << 12) |
564 (((-im) & 0xf0) << 4) | ((-im) & 0xf));
565 }
566
567 static inline void tcg_out_ld16s_r(TCGContext *s, int cond,
568 int rd, int rn, int rm)
569 {
570 tcg_out32(s, (cond << 28) | 0x019000f0 |
571 (rn << 16) | (rd << 12) | rm);
572 }
573
574 static inline void tcg_out_st16s_r(TCGContext *s, int cond,
575 int rd, int rn, int rm)
576 {
577 tcg_out32(s, (cond << 28) | 0x018000f0 |
578 (rn << 16) | (rd << 12) | rm);
579 }
580
581 static inline void tcg_out_ld8_12(TCGContext *s, int cond,
582 int rd, int rn, tcg_target_long im)
583 {
584 if (im >= 0)
585 tcg_out32(s, (cond << 28) | 0x05d00000 |
586 (rn << 16) | (rd << 12) | (im & 0xfff));
587 else
588 tcg_out32(s, (cond << 28) | 0x05500000 |
589 (rn << 16) | (rd << 12) | ((-im) & 0xfff));
590 }
591
592 static inline void tcg_out_st8_12(TCGContext *s, int cond,
593 int rd, int rn, tcg_target_long im)
594 {
595 if (im >= 0)
596 tcg_out32(s, (cond << 28) | 0x05c00000 |
597 (rn << 16) | (rd << 12) | (im & 0xfff));
598 else
599 tcg_out32(s, (cond << 28) | 0x05400000 |
600 (rn << 16) | (rd << 12) | ((-im) & 0xfff));
601 }
602
603 static inline void tcg_out_ld8_r(TCGContext *s, int cond,
604 int rd, int rn, int rm)
605 {
606 tcg_out32(s, (cond << 28) | 0x07d00000 |
607 (rn << 16) | (rd << 12) | rm);
608 }
609
610 static inline void tcg_out_st8_r(TCGContext *s, int cond,
611 int rd, int rn, int rm)
612 {
613 tcg_out32(s, (cond << 28) | 0x07c00000 |
614 (rn << 16) | (rd << 12) | rm);
615 }
616
617 static inline void tcg_out_ld8s_8(TCGContext *s, int cond,
618 int rd, int rn, tcg_target_long im)
619 {
620 if (im >= 0)
621 tcg_out32(s, (cond << 28) | 0x01d000d0 |
622 (rn << 16) | (rd << 12) |
623 ((im & 0xf0) << 4) | (im & 0xf));
624 else
625 tcg_out32(s, (cond << 28) | 0x015000d0 |
626 (rn << 16) | (rd << 12) |
627 (((-im) & 0xf0) << 4) | ((-im) & 0xf));
628 }
629
630 static inline void tcg_out_st8s_8(TCGContext *s, int cond,
631 int rd, int rn, tcg_target_long im)
632 {
633 if (im >= 0)
634 tcg_out32(s, (cond << 28) | 0x01c000d0 |
635 (rn << 16) | (rd << 12) |
636 ((im & 0xf0) << 4) | (im & 0xf));
637 else
638 tcg_out32(s, (cond << 28) | 0x014000d0 |
639 (rn << 16) | (rd << 12) |
640 (((-im) & 0xf0) << 4) | ((-im) & 0xf));
641 }
642
643 static inline void tcg_out_ld8s_r(TCGContext *s, int cond,
644 int rd, int rn, int rm)
645 {
646 tcg_out32(s, (cond << 28) | 0x019000d0 |
647 (rn << 16) | (rd << 12) | rm);
648 }
649
650 static inline void tcg_out_st8s_r(TCGContext *s, int cond,
651 int rd, int rn, int rm)
652 {
653 tcg_out32(s, (cond << 28) | 0x018000d0 |
654 (rn << 16) | (rd << 12) | rm);
655 }
656
657 static inline void tcg_out_ld32u(TCGContext *s, int cond,
658 int rd, int rn, int32_t offset)
659 {
660 if (offset > 0xfff || offset < -0xfff) {
661 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
662 tcg_out_ld32_r(s, cond, rd, rn, TCG_REG_R8);
663 } else
664 tcg_out_ld32_12(s, cond, rd, rn, offset);
665 }
666
667 static inline void tcg_out_st32(TCGContext *s, int cond,
668 int rd, int rn, int32_t offset)
669 {
670 if (offset > 0xfff || offset < -0xfff) {
671 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
672 tcg_out_st32_r(s, cond, rd, rn, TCG_REG_R8);
673 } else
674 tcg_out_st32_12(s, cond, rd, rn, offset);
675 }
676
677 static inline void tcg_out_ld16u(TCGContext *s, int cond,
678 int rd, int rn, int32_t offset)
679 {
680 if (offset > 0xff || offset < -0xff) {
681 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
682 tcg_out_ld16u_r(s, cond, rd, rn, TCG_REG_R8);
683 } else
684 tcg_out_ld16u_8(s, cond, rd, rn, offset);
685 }
686
687 static inline void tcg_out_ld16s(TCGContext *s, int cond,
688 int rd, int rn, int32_t offset)
689 {
690 if (offset > 0xff || offset < -0xff) {
691 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
692 tcg_out_ld16s_r(s, cond, rd, rn, TCG_REG_R8);
693 } else
694 tcg_out_ld16s_8(s, cond, rd, rn, offset);
695 }
696
697 static inline void tcg_out_st16u(TCGContext *s, int cond,
698 int rd, int rn, int32_t offset)
699 {
700 if (offset > 0xff || offset < -0xff) {
701 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
702 tcg_out_st16u_r(s, cond, rd, rn, TCG_REG_R8);
703 } else
704 tcg_out_st16u_8(s, cond, rd, rn, offset);
705 }
706
707 static inline void tcg_out_ld8u(TCGContext *s, int cond,
708 int rd, int rn, int32_t offset)
709 {
710 if (offset > 0xfff || offset < -0xfff) {
711 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
712 tcg_out_ld8_r(s, cond, rd, rn, TCG_REG_R8);
713 } else
714 tcg_out_ld8_12(s, cond, rd, rn, offset);
715 }
716
717 static inline void tcg_out_ld8s(TCGContext *s, int cond,
718 int rd, int rn, int32_t offset)
719 {
720 if (offset > 0xff || offset < -0xff) {
721 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
722 tcg_out_ld8s_r(s, cond, rd, rn, TCG_REG_R8);
723 } else
724 tcg_out_ld8s_8(s, cond, rd, rn, offset);
725 }
726
727 static inline void tcg_out_st8u(TCGContext *s, int cond,
728 int rd, int rn, int32_t offset)
729 {
730 if (offset > 0xfff || offset < -0xfff) {
731 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
732 tcg_out_st8_r(s, cond, rd, rn, TCG_REG_R8);
733 } else
734 tcg_out_st8_12(s, cond, rd, rn, offset);
735 }
736
737 static inline void tcg_out_goto(TCGContext *s, int cond, uint32_t addr)
738 {
739 int32_t val;
740
741 val = addr - (tcg_target_long) s->code_ptr;
742 if (val - 8 < 0x01fffffd && val - 8 > -0x01fffffd)
743 tcg_out_b(s, cond, val);
744 else {
745 #if 1
746 tcg_abort();
747 #else
748 if (cond == COND_AL) {
749 tcg_out_ld32_12(s, COND_AL, 15, 15, -4);
750 tcg_out32(s, addr); /* XXX: This is l->u.value, can we use it? */
751 } else {
752 tcg_out_movi32(s, cond, TCG_REG_R8, val - 8);
753 tcg_out_dat_reg(s, cond, ARITH_ADD,
754 15, 15, TCG_REG_R8, SHIFT_IMM_LSL(0));
755 }
756 #endif
757 }
758 }
759
760 static inline void tcg_out_call(TCGContext *s, int cond, uint32_t addr)
761 {
762 int32_t val;
763
764 #ifdef SAVE_LR
765 tcg_out_dat_reg(s, cond, ARITH_MOV, TCG_REG_R8, 0, 14, SHIFT_IMM_LSL(0));
766 #endif
767
768 val = addr - (tcg_target_long) s->code_ptr;
769 if (val < 0x01fffffd && val > -0x01fffffd)
770 tcg_out_bl(s, cond, val);
771 else {
772 #if 1
773 tcg_abort();
774 #else
775 if (cond == COND_AL) {
776 tcg_out_dat_imm(s, cond, ARITH_ADD, 14, 15, 4);
777 tcg_out_ld32_12(s, COND_AL, 15, 15, -4);
778 tcg_out32(s, addr); /* XXX: This is l->u.value, can we use it? */
779 } else {
780 tcg_out_movi32(s, cond, TCG_REG_R9, addr);
781 tcg_out_dat_imm(s, cond, ARITH_MOV, 14, 0, 15);
782 tcg_out_bx(s, cond, TCG_REG_R9);
783 }
784 #endif
785 }
786
787 #ifdef SAVE_LR
788 tcg_out_dat_reg(s, cond, ARITH_MOV, 14, 0, TCG_REG_R8, SHIFT_IMM_LSL(0));
789 #endif
790 }
791
792 static inline void tcg_out_callr(TCGContext *s, int cond, int arg)
793 {
794 #ifdef SAVE_LR
795 tcg_out_dat_reg(s, cond, ARITH_MOV, TCG_REG_R8, 0, 14, SHIFT_IMM_LSL(0));
796 #endif
797 /* TODO: on ARMv5 and ARMv6 replace with tcg_out_blx(s, cond, arg); */
798 tcg_out_dat_reg(s, cond, ARITH_MOV, 14, 0, 15, SHIFT_IMM_LSL(0));
799 tcg_out_bx(s, cond, arg);
800 #ifdef SAVE_LR
801 tcg_out_dat_reg(s, cond, ARITH_MOV, 14, 0, TCG_REG_R8, SHIFT_IMM_LSL(0));
802 #endif
803 }
804
805 static inline void tcg_out_goto_label(TCGContext *s, int cond, int label_index)
806 {
807 TCGLabel *l = &s->labels[label_index];
808
809 if (l->has_value)
810 tcg_out_goto(s, cond, l->u.value);
811 else if (cond == COND_AL) {
812 tcg_out_ld32_12(s, COND_AL, 15, 15, -4);
813 tcg_out_reloc(s, s->code_ptr, R_ARM_ABS32, label_index, 31337);
814 s->code_ptr += 4;
815 } else {
816 /* Probably this should be preferred even for COND_AL... */
817 tcg_out_reloc(s, s->code_ptr, R_ARM_PC24, label_index, 31337);
818 tcg_out_b_noaddr(s, cond);
819 }
820 }
821
822 static void tcg_out_div_helper(TCGContext *s, int cond, const TCGArg *args,
823 void *helper_div, void *helper_rem, int shift)
824 {
825 int div_reg = args[0];
826 int rem_reg = args[1];
827
828 /* stmdb sp!, { r0 - r3, ip, lr } */
829 /* (Note that we need an even number of registers as per EABI) */
830 tcg_out32(s, (cond << 28) | 0x092d500f);
831
832 tcg_out_dat_reg(s, cond, ARITH_MOV, 0, 0, args[2], SHIFT_IMM_LSL(0));
833 tcg_out_dat_reg(s, cond, ARITH_MOV, 1, 0, args[3], SHIFT_IMM_LSL(0));
834 tcg_out_dat_reg(s, cond, ARITH_MOV, 2, 0, args[4], SHIFT_IMM_LSL(0));
835 tcg_out_dat_reg(s, cond, ARITH_MOV, 3, 0, 2, shift);
836
837 tcg_out_call(s, cond, (uint32_t) helper_div);
838 tcg_out_dat_reg(s, cond, ARITH_MOV, 8, 0, 0, SHIFT_IMM_LSL(0));
839
840 /* ldmia sp, { r0 - r3, fp, lr } */
841 tcg_out32(s, (cond << 28) | 0x089d500f);
842
843 tcg_out_dat_reg(s, cond, ARITH_MOV, 0, 0, args[2], SHIFT_IMM_LSL(0));
844 tcg_out_dat_reg(s, cond, ARITH_MOV, 1, 0, args[3], SHIFT_IMM_LSL(0));
845 tcg_out_dat_reg(s, cond, ARITH_MOV, 2, 0, args[4], SHIFT_IMM_LSL(0));
846 tcg_out_dat_reg(s, cond, ARITH_MOV, 3, 0, 2, shift);
847
848 tcg_out_call(s, cond, (uint32_t) helper_rem);
849
850 tcg_out_dat_reg(s, cond, ARITH_MOV, rem_reg, 0, 0, SHIFT_IMM_LSL(0));
851 tcg_out_dat_reg(s, cond, ARITH_MOV, div_reg, 0, 8, SHIFT_IMM_LSL(0));
852
853 /* ldr r0, [sp], #4 */
854 if (rem_reg != 0 && div_reg != 0)
855 tcg_out32(s, (cond << 28) | 0x04bd0004);
856 /* ldr r1, [sp], #4 */
857 if (rem_reg != 1 && div_reg != 1)
858 tcg_out32(s, (cond << 28) | 0x04bd1004);
859 /* ldr r2, [sp], #4 */
860 if (rem_reg != 2 && div_reg != 2)
861 tcg_out32(s, (cond << 28) | 0x04bd2004);
862 /* ldr r3, [sp], #4 */
863 if (rem_reg != 3 && div_reg != 3)
864 tcg_out32(s, (cond << 28) | 0x04bd3004);
865 /* ldr ip, [sp], #4 */
866 if (rem_reg != 12 && div_reg != 12)
867 tcg_out32(s, (cond << 28) | 0x04bdc004);
868 /* ldr lr, [sp], #4 */
869 if (rem_reg != 14 && div_reg != 14)
870 tcg_out32(s, (cond << 28) | 0x04bde004);
871 }
872
873 #ifdef CONFIG_SOFTMMU
874
875 #include "../../softmmu_defs.h"
876
877 static void *qemu_ld_helpers[4] = {
878 __ldb_mmu,
879 __ldw_mmu,
880 __ldl_mmu,
881 __ldq_mmu,
882 };
883
884 static void *qemu_st_helpers[4] = {
885 __stb_mmu,
886 __stw_mmu,
887 __stl_mmu,
888 __stq_mmu,
889 };
890 #endif
891
892 #define TLB_SHIFT (CPU_TLB_ENTRY_BITS + CPU_TLB_BITS)
893
894 static inline void tcg_out_qemu_ld(TCGContext *s, int cond,
895 const TCGArg *args, int opc)
896 {
897 int addr_reg, data_reg, data_reg2;
898 #ifdef CONFIG_SOFTMMU
899 int mem_index, s_bits;
900 # if TARGET_LONG_BITS == 64
901 int addr_reg2;
902 # endif
903 uint32_t *label_ptr;
904 #endif
905
906 data_reg = *args++;
907 if (opc == 3)
908 data_reg2 = *args++;
909 else
910 data_reg2 = 0; /* suppress warning */
911 addr_reg = *args++;
912 #ifdef CONFIG_SOFTMMU
913 # if TARGET_LONG_BITS == 64
914 addr_reg2 = *args++;
915 # endif
916 mem_index = *args;
917 s_bits = opc & 3;
918
919 /* Should generate something like the following:
920 * shr r8, addr_reg, #TARGET_PAGE_BITS
921 * and r0, r8, #(CPU_TLB_SIZE - 1) @ Assumption: CPU_TLB_BITS <= 8
922 * add r0, env, r0 lsl #CPU_TLB_ENTRY_BITS
923 */
924 # if CPU_TLB_BITS > 8
925 # error
926 # endif
927 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
928 8, 0, addr_reg, SHIFT_IMM_LSR(TARGET_PAGE_BITS));
929 tcg_out_dat_imm(s, COND_AL, ARITH_AND,
930 0, 8, CPU_TLB_SIZE - 1);
931 tcg_out_dat_reg(s, COND_AL, ARITH_ADD,
932 0, TCG_AREG0, 0, SHIFT_IMM_LSL(CPU_TLB_ENTRY_BITS));
933 /* In the
934 * ldr r1 [r0, #(offsetof(CPUState, tlb_table[mem_index][0].addr_read))]
935 * below, the offset is likely to exceed 12 bits if mem_index != 0 and
936 * not exceed otherwise, so use an
937 * add r0, r0, #(mem_index * sizeof *CPUState.tlb_table)
938 * before.
939 */
940 if (mem_index)
941 tcg_out_dat_imm(s, COND_AL, ARITH_ADD, 0, 0,
942 (mem_index << (TLB_SHIFT & 1)) |
943 ((16 - (TLB_SHIFT >> 1)) << 8));
944 tcg_out_ld32_12(s, COND_AL, 1, 0,
945 offsetof(CPUState, tlb_table[0][0].addr_read));
946 tcg_out_dat_reg(s, COND_AL, ARITH_CMP,
947 0, 1, 8, SHIFT_IMM_LSL(TARGET_PAGE_BITS));
948 /* Check alignment. */
949 if (s_bits)
950 tcg_out_dat_imm(s, COND_EQ, ARITH_TST,
951 0, addr_reg, (1 << s_bits) - 1);
952 # if TARGET_LONG_BITS == 64
953 /* XXX: possibly we could use a block data load or writeback in
954 * the first access. */
955 tcg_out_ld32_12(s, COND_EQ, 1, 0,
956 offsetof(CPUState, tlb_table[0][0].addr_read) + 4);
957 tcg_out_dat_reg(s, COND_EQ, ARITH_CMP,
958 0, 1, addr_reg2, SHIFT_IMM_LSL(0));
959 # endif
960 tcg_out_ld32_12(s, COND_EQ, 1, 0,
961 offsetof(CPUState, tlb_table[0][0].addend));
962
963 switch (opc) {
964 case 0:
965 tcg_out_ld8_r(s, COND_EQ, data_reg, addr_reg, 1);
966 break;
967 case 0 | 4:
968 tcg_out_ld8s_r(s, COND_EQ, data_reg, addr_reg, 1);
969 break;
970 case 1:
971 tcg_out_ld16u_r(s, COND_EQ, data_reg, addr_reg, 1);
972 break;
973 case 1 | 4:
974 tcg_out_ld16s_r(s, COND_EQ, data_reg, addr_reg, 1);
975 break;
976 case 2:
977 default:
978 tcg_out_ld32_r(s, COND_EQ, data_reg, addr_reg, 1);
979 break;
980 case 3:
981 tcg_out_ld32_rwb(s, COND_EQ, data_reg, 1, addr_reg);
982 tcg_out_ld32_12(s, COND_EQ, data_reg2, 1, 4);
983 break;
984 }
985
986 label_ptr = (void *) s->code_ptr;
987 tcg_out_b(s, COND_EQ, 8);
988
989 # ifdef SAVE_LR
990 tcg_out_dat_reg(s, cond, ARITH_MOV, 8, 0, 14, SHIFT_IMM_LSL(0));
991 # endif
992
993 /* TODO: move this code to where the constants pool will be */
994 if (addr_reg)
995 tcg_out_dat_reg(s, cond, ARITH_MOV,
996 0, 0, addr_reg, SHIFT_IMM_LSL(0));
997 # if TARGET_LONG_BITS == 32
998 tcg_out_dat_imm(s, cond, ARITH_MOV, 1, 0, mem_index);
999 # else
1000 if (addr_reg2 != 1)
1001 tcg_out_dat_reg(s, cond, ARITH_MOV,
1002 1, 0, addr_reg2, SHIFT_IMM_LSL(0));
1003 tcg_out_dat_imm(s, cond, ARITH_MOV, 2, 0, mem_index);
1004 # endif
1005 tcg_out_bl(s, cond, (tcg_target_long) qemu_ld_helpers[s_bits] -
1006 (tcg_target_long) s->code_ptr);
1007
1008 switch (opc) {
1009 case 0 | 4:
1010 tcg_out_dat_reg(s, cond, ARITH_MOV,
1011 0, 0, 0, SHIFT_IMM_LSL(24));
1012 tcg_out_dat_reg(s, cond, ARITH_MOV,
1013 data_reg, 0, 0, SHIFT_IMM_ASR(24));
1014 break;
1015 case 1 | 4:
1016 tcg_out_dat_reg(s, cond, ARITH_MOV,
1017 0, 0, 0, SHIFT_IMM_LSL(16));
1018 tcg_out_dat_reg(s, cond, ARITH_MOV,
1019 data_reg, 0, 0, SHIFT_IMM_ASR(16));
1020 break;
1021 case 0:
1022 case 1:
1023 case 2:
1024 default:
1025 if (data_reg)
1026 tcg_out_dat_reg(s, cond, ARITH_MOV,
1027 data_reg, 0, 0, SHIFT_IMM_LSL(0));
1028 break;
1029 case 3:
1030 if (data_reg != 0)
1031 tcg_out_dat_reg(s, cond, ARITH_MOV,
1032 data_reg, 0, 0, SHIFT_IMM_LSL(0));
1033 if (data_reg2 != 1)
1034 tcg_out_dat_reg(s, cond, ARITH_MOV,
1035 data_reg2, 0, 1, SHIFT_IMM_LSL(0));
1036 break;
1037 }
1038
1039 # ifdef SAVE_LR
1040 tcg_out_dat_reg(s, cond, ARITH_MOV, 14, 0, 8, SHIFT_IMM_LSL(0));
1041 # endif
1042
1043 *label_ptr += ((void *) s->code_ptr - (void *) label_ptr - 8) >> 2;
1044 #else /* !CONFIG_SOFTMMU */
1045 if (GUEST_BASE) {
1046 uint32_t offset = GUEST_BASE;
1047 int i;
1048 int rot;
1049
1050 while (offset) {
1051 i = ctz32(offset) & ~1;
1052 rot = ((32 - i) << 7) & 0xf00;
1053
1054 tcg_out_dat_imm(s, COND_AL, ARITH_ADD, 8, addr_reg,
1055 ((offset >> i) & 0xff) | rot);
1056 addr_reg = 8;
1057 offset &= ~(0xff << i);
1058 }
1059 }
1060 switch (opc) {
1061 case 0:
1062 tcg_out_ld8_12(s, COND_AL, data_reg, addr_reg, 0);
1063 break;
1064 case 0 | 4:
1065 tcg_out_ld8s_8(s, COND_AL, data_reg, addr_reg, 0);
1066 break;
1067 case 1:
1068 tcg_out_ld16u_8(s, COND_AL, data_reg, addr_reg, 0);
1069 break;
1070 case 1 | 4:
1071 tcg_out_ld16s_8(s, COND_AL, data_reg, addr_reg, 0);
1072 break;
1073 case 2:
1074 default:
1075 tcg_out_ld32_12(s, COND_AL, data_reg, addr_reg, 0);
1076 break;
1077 case 3:
1078 /* TODO: use block load -
1079 * check that data_reg2 > data_reg or the other way */
1080 if (data_reg == addr_reg) {
1081 tcg_out_ld32_12(s, COND_AL, data_reg2, addr_reg, 4);
1082 tcg_out_ld32_12(s, COND_AL, data_reg, addr_reg, 0);
1083 } else {
1084 tcg_out_ld32_12(s, COND_AL, data_reg, addr_reg, 0);
1085 tcg_out_ld32_12(s, COND_AL, data_reg2, addr_reg, 4);
1086 }
1087 break;
1088 }
1089 #endif
1090 }
1091
1092 static inline void tcg_out_qemu_st(TCGContext *s, int cond,
1093 const TCGArg *args, int opc)
1094 {
1095 int addr_reg, data_reg, data_reg2;
1096 #ifdef CONFIG_SOFTMMU
1097 int mem_index, s_bits;
1098 # if TARGET_LONG_BITS == 64
1099 int addr_reg2;
1100 # endif
1101 uint32_t *label_ptr;
1102 #endif
1103
1104 data_reg = *args++;
1105 if (opc == 3)
1106 data_reg2 = *args++;
1107 else
1108 data_reg2 = 0; /* suppress warning */
1109 addr_reg = *args++;
1110 #ifdef CONFIG_SOFTMMU
1111 # if TARGET_LONG_BITS == 64
1112 addr_reg2 = *args++;
1113 # endif
1114 mem_index = *args;
1115 s_bits = opc & 3;
1116
1117 /* Should generate something like the following:
1118 * shr r8, addr_reg, #TARGET_PAGE_BITS
1119 * and r0, r8, #(CPU_TLB_SIZE - 1) @ Assumption: CPU_TLB_BITS <= 8
1120 * add r0, env, r0 lsl #CPU_TLB_ENTRY_BITS
1121 */
1122 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1123 8, 0, addr_reg, SHIFT_IMM_LSR(TARGET_PAGE_BITS));
1124 tcg_out_dat_imm(s, COND_AL, ARITH_AND,
1125 0, 8, CPU_TLB_SIZE - 1);
1126 tcg_out_dat_reg(s, COND_AL, ARITH_ADD,
1127 0, TCG_AREG0, 0, SHIFT_IMM_LSL(CPU_TLB_ENTRY_BITS));
1128 /* In the
1129 * ldr r1 [r0, #(offsetof(CPUState, tlb_table[mem_index][0].addr_write))]
1130 * below, the offset is likely to exceed 12 bits if mem_index != 0 and
1131 * not exceed otherwise, so use an
1132 * add r0, r0, #(mem_index * sizeof *CPUState.tlb_table)
1133 * before.
1134 */
1135 if (mem_index)
1136 tcg_out_dat_imm(s, COND_AL, ARITH_ADD, 0, 0,
1137 (mem_index << (TLB_SHIFT & 1)) |
1138 ((16 - (TLB_SHIFT >> 1)) << 8));
1139 tcg_out_ld32_12(s, COND_AL, 1, 0,
1140 offsetof(CPUState, tlb_table[0][0].addr_write));
1141 tcg_out_dat_reg(s, COND_AL, ARITH_CMP,
1142 0, 1, 8, SHIFT_IMM_LSL(TARGET_PAGE_BITS));
1143 /* Check alignment. */
1144 if (s_bits)
1145 tcg_out_dat_imm(s, COND_EQ, ARITH_TST,
1146 0, addr_reg, (1 << s_bits) - 1);
1147 # if TARGET_LONG_BITS == 64
1148 /* XXX: possibly we could use a block data load or writeback in
1149 * the first access. */
1150 tcg_out_ld32_12(s, COND_EQ, 1, 0,
1151 offsetof(CPUState, tlb_table[0][0].addr_write)
1152 + 4);
1153 tcg_out_dat_reg(s, COND_EQ, ARITH_CMP,
1154 0, 1, addr_reg2, SHIFT_IMM_LSL(0));
1155 # endif
1156 tcg_out_ld32_12(s, COND_EQ, 1, 0,
1157 offsetof(CPUState, tlb_table[0][0].addend));
1158
1159 switch (opc) {
1160 case 0:
1161 tcg_out_st8_r(s, COND_EQ, data_reg, addr_reg, 1);
1162 break;
1163 case 0 | 4:
1164 tcg_out_st8s_r(s, COND_EQ, data_reg, addr_reg, 1);
1165 break;
1166 case 1:
1167 tcg_out_st16u_r(s, COND_EQ, data_reg, addr_reg, 1);
1168 break;
1169 case 1 | 4:
1170 tcg_out_st16s_r(s, COND_EQ, data_reg, addr_reg, 1);
1171 break;
1172 case 2:
1173 default:
1174 tcg_out_st32_r(s, COND_EQ, data_reg, addr_reg, 1);
1175 break;
1176 case 3:
1177 tcg_out_st32_rwb(s, COND_EQ, data_reg, 1, addr_reg);
1178 tcg_out_st32_12(s, COND_EQ, data_reg2, 1, 4);
1179 break;
1180 }
1181
1182 label_ptr = (void *) s->code_ptr;
1183 tcg_out_b(s, COND_EQ, 8);
1184
1185 /* TODO: move this code to where the constants pool will be */
1186 if (addr_reg)
1187 tcg_out_dat_reg(s, cond, ARITH_MOV,
1188 0, 0, addr_reg, SHIFT_IMM_LSL(0));
1189 # if TARGET_LONG_BITS == 32
1190 switch (opc) {
1191 case 0:
1192 tcg_out_dat_imm(s, cond, ARITH_AND, 1, data_reg, 0xff);
1193 tcg_out_dat_imm(s, cond, ARITH_MOV, 2, 0, mem_index);
1194 break;
1195 case 1:
1196 tcg_out_dat_reg(s, cond, ARITH_MOV,
1197 1, 0, data_reg, SHIFT_IMM_LSL(16));
1198 tcg_out_dat_reg(s, cond, ARITH_MOV,
1199 1, 0, 1, SHIFT_IMM_LSR(16));
1200 tcg_out_dat_imm(s, cond, ARITH_MOV, 2, 0, mem_index);
1201 break;
1202 case 2:
1203 if (data_reg != 1)
1204 tcg_out_dat_reg(s, cond, ARITH_MOV,
1205 1, 0, data_reg, SHIFT_IMM_LSL(0));
1206 tcg_out_dat_imm(s, cond, ARITH_MOV, 2, 0, mem_index);
1207 break;
1208 case 3:
1209 if (data_reg != 1)
1210 tcg_out_dat_reg(s, cond, ARITH_MOV,
1211 1, 0, data_reg, SHIFT_IMM_LSL(0));
1212 if (data_reg2 != 2)
1213 tcg_out_dat_reg(s, cond, ARITH_MOV,
1214 2, 0, data_reg2, SHIFT_IMM_LSL(0));
1215 tcg_out_dat_imm(s, cond, ARITH_MOV, 3, 0, mem_index);
1216 break;
1217 }
1218 # else
1219 if (addr_reg2 != 1)
1220 tcg_out_dat_reg(s, cond, ARITH_MOV,
1221 1, 0, addr_reg2, SHIFT_IMM_LSL(0));
1222 switch (opc) {
1223 case 0:
1224 tcg_out_dat_imm(s, cond, ARITH_AND, 2, data_reg, 0xff);
1225 tcg_out_dat_imm(s, cond, ARITH_MOV, 3, 0, mem_index);
1226 break;
1227 case 1:
1228 tcg_out_dat_reg(s, cond, ARITH_MOV,
1229 2, 0, data_reg, SHIFT_IMM_LSL(16));
1230 tcg_out_dat_reg(s, cond, ARITH_MOV,
1231 2, 0, 2, SHIFT_IMM_LSR(16));
1232 tcg_out_dat_imm(s, cond, ARITH_MOV, 3, 0, mem_index);
1233 break;
1234 case 2:
1235 if (data_reg != 2)
1236 tcg_out_dat_reg(s, cond, ARITH_MOV,
1237 2, 0, data_reg, SHIFT_IMM_LSL(0));
1238 tcg_out_dat_imm(s, cond, ARITH_MOV, 3, 0, mem_index);
1239 break;
1240 case 3:
1241 tcg_out_dat_imm(s, cond, ARITH_MOV, 8, 0, mem_index);
1242 tcg_out32(s, (cond << 28) | 0x052d8010); /* str r8, [sp, #-0x10]! */
1243 if (data_reg != 2)
1244 tcg_out_dat_reg(s, cond, ARITH_MOV,
1245 2, 0, data_reg, SHIFT_IMM_LSL(0));
1246 if (data_reg2 != 3)
1247 tcg_out_dat_reg(s, cond, ARITH_MOV,
1248 3, 0, data_reg2, SHIFT_IMM_LSL(0));
1249 break;
1250 }
1251 # endif
1252
1253 # ifdef SAVE_LR
1254 tcg_out_dat_reg(s, cond, ARITH_MOV, 8, 0, 14, SHIFT_IMM_LSL(0));
1255 # endif
1256
1257 tcg_out_bl(s, cond, (tcg_target_long) qemu_st_helpers[s_bits] -
1258 (tcg_target_long) s->code_ptr);
1259 # if TARGET_LONG_BITS == 64
1260 if (opc == 3)
1261 tcg_out_dat_imm(s, cond, ARITH_ADD, 13, 13, 0x10);
1262 # endif
1263
1264 # ifdef SAVE_LR
1265 tcg_out_dat_reg(s, cond, ARITH_MOV, 14, 0, 8, SHIFT_IMM_LSL(0));
1266 # endif
1267
1268 *label_ptr += ((void *) s->code_ptr - (void *) label_ptr - 8) >> 2;
1269 #else /* !CONFIG_SOFTMMU */
1270 if (GUEST_BASE) {
1271 uint32_t offset = GUEST_BASE;
1272 int i;
1273 int rot;
1274
1275 while (offset) {
1276 i = ctz32(offset) & ~1;
1277 rot = ((32 - i) << 7) & 0xf00;
1278
1279 tcg_out_dat_imm(s, COND_AL, ARITH_ADD, 8, addr_reg,
1280 ((offset >> i) & 0xff) | rot);
1281 addr_reg = 8;
1282 offset &= ~(0xff << i);
1283 }
1284 }
1285 switch (opc) {
1286 case 0:
1287 tcg_out_st8_12(s, COND_AL, data_reg, addr_reg, 0);
1288 break;
1289 case 0 | 4:
1290 tcg_out_st8s_8(s, COND_AL, data_reg, addr_reg, 0);
1291 break;
1292 case 1:
1293 tcg_out_st16u_8(s, COND_AL, data_reg, addr_reg, 0);
1294 break;
1295 case 1 | 4:
1296 tcg_out_st16s_8(s, COND_AL, data_reg, addr_reg, 0);
1297 break;
1298 case 2:
1299 default:
1300 tcg_out_st32_12(s, COND_AL, data_reg, addr_reg, 0);
1301 break;
1302 case 3:
1303 /* TODO: use block store -
1304 * check that data_reg2 > data_reg or the other way */
1305 tcg_out_st32_12(s, COND_AL, data_reg, addr_reg, 0);
1306 tcg_out_st32_12(s, COND_AL, data_reg2, addr_reg, 4);
1307 break;
1308 }
1309 #endif
1310 }
1311
1312 static uint8_t *tb_ret_addr;
1313
1314 static inline void tcg_out_op(TCGContext *s, int opc,
1315 const TCGArg *args, const int *const_args)
1316 {
1317 int c;
1318
1319 switch (opc) {
1320 case INDEX_op_exit_tb:
1321 #ifdef SAVE_LR
1322 if (args[0] >> 8)
1323 tcg_out_ld32_12(s, COND_AL, TCG_REG_R0, 15, 0);
1324 else
1325 tcg_out_dat_imm(s, COND_AL, ARITH_MOV, TCG_REG_R0, 0, args[0]);
1326 tcg_out_dat_reg(s, COND_AL, ARITH_MOV, 15, 0, 14, SHIFT_IMM_LSL(0));
1327 if (args[0] >> 8)
1328 tcg_out32(s, args[0]);
1329 #else
1330 {
1331 uint8_t *ld_ptr = s->code_ptr;
1332 if (args[0] >> 8)
1333 tcg_out_ld32_12(s, COND_AL, 0, 15, 0);
1334 else
1335 tcg_out_dat_imm(s, COND_AL, ARITH_MOV, 0, 0, args[0]);
1336 tcg_out_goto(s, COND_AL, (tcg_target_ulong) tb_ret_addr);
1337 if (args[0] >> 8) {
1338 *ld_ptr = (uint8_t) (s->code_ptr - ld_ptr) - 8;
1339 tcg_out32(s, args[0]);
1340 }
1341 }
1342 #endif
1343 break;
1344 case INDEX_op_goto_tb:
1345 if (s->tb_jmp_offset) {
1346 /* Direct jump method */
1347 #if defined(USE_DIRECT_JUMP)
1348 s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf;
1349 tcg_out_b(s, COND_AL, 8);
1350 #else
1351 tcg_out_ld32_12(s, COND_AL, 15, 15, -4);
1352 s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf;
1353 tcg_out32(s, 0);
1354 #endif
1355 } else {
1356 /* Indirect jump method */
1357 #if 1
1358 c = (int) (s->tb_next + args[0]) - ((int) s->code_ptr + 8);
1359 if (c > 0xfff || c < -0xfff) {
1360 tcg_out_movi32(s, COND_AL, TCG_REG_R0,
1361 (tcg_target_long) (s->tb_next + args[0]));
1362 tcg_out_ld32_12(s, COND_AL, 15, TCG_REG_R0, 0);
1363 } else
1364 tcg_out_ld32_12(s, COND_AL, 15, 15, c);
1365 #else
1366 tcg_out_ld32_12(s, COND_AL, TCG_REG_R0, 15, 0);
1367 tcg_out_ld32_12(s, COND_AL, 15, TCG_REG_R0, 0);
1368 tcg_out32(s, (tcg_target_long) (s->tb_next + args[0]));
1369 #endif
1370 }
1371 s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf;
1372 break;
1373 case INDEX_op_call:
1374 if (const_args[0])
1375 tcg_out_call(s, COND_AL, args[0]);
1376 else
1377 tcg_out_callr(s, COND_AL, args[0]);
1378 break;
1379 case INDEX_op_jmp:
1380 if (const_args[0])
1381 tcg_out_goto(s, COND_AL, args[0]);
1382 else
1383 tcg_out_bx(s, COND_AL, args[0]);
1384 break;
1385 case INDEX_op_br:
1386 tcg_out_goto_label(s, COND_AL, args[0]);
1387 break;
1388
1389 case INDEX_op_ld8u_i32:
1390 tcg_out_ld8u(s, COND_AL, args[0], args[1], args[2]);
1391 break;
1392 case INDEX_op_ld8s_i32:
1393 tcg_out_ld8s(s, COND_AL, args[0], args[1], args[2]);
1394 break;
1395 case INDEX_op_ld16u_i32:
1396 tcg_out_ld16u(s, COND_AL, args[0], args[1], args[2]);
1397 break;
1398 case INDEX_op_ld16s_i32:
1399 tcg_out_ld16s(s, COND_AL, args[0], args[1], args[2]);
1400 break;
1401 case INDEX_op_ld_i32:
1402 tcg_out_ld32u(s, COND_AL, args[0], args[1], args[2]);
1403 break;
1404 case INDEX_op_st8_i32:
1405 tcg_out_st8u(s, COND_AL, args[0], args[1], args[2]);
1406 break;
1407 case INDEX_op_st16_i32:
1408 tcg_out_st16u(s, COND_AL, args[0], args[1], args[2]);
1409 break;
1410 case INDEX_op_st_i32:
1411 tcg_out_st32(s, COND_AL, args[0], args[1], args[2]);
1412 break;
1413
1414 case INDEX_op_mov_i32:
1415 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1416 args[0], 0, args[1], SHIFT_IMM_LSL(0));
1417 break;
1418 case INDEX_op_movi_i32:
1419 tcg_out_movi32(s, COND_AL, args[0], args[1]);
1420 break;
1421 case INDEX_op_add_i32:
1422 c = ARITH_ADD;
1423 goto gen_arith;
1424 case INDEX_op_sub_i32:
1425 c = ARITH_SUB;
1426 goto gen_arith;
1427 case INDEX_op_and_i32:
1428 c = ARITH_AND;
1429 goto gen_arith;
1430 case INDEX_op_or_i32:
1431 c = ARITH_ORR;
1432 goto gen_arith;
1433 case INDEX_op_xor_i32:
1434 c = ARITH_EOR;
1435 /* Fall through. */
1436 gen_arith:
1437 if (const_args[2]) {
1438 int rot;
1439 rot = encode_imm(args[2]);
1440 tcg_out_dat_imm(s, COND_AL, c,
1441 args[0], args[1], rotl(args[2], rot) | (rot << 7));
1442 } else
1443 tcg_out_dat_reg(s, COND_AL, c,
1444 args[0], args[1], args[2], SHIFT_IMM_LSL(0));
1445 break;
1446 case INDEX_op_add2_i32:
1447 tcg_out_dat_reg2(s, COND_AL, ARITH_ADD, ARITH_ADC,
1448 args[0], args[1], args[2], args[3],
1449 args[4], args[5], SHIFT_IMM_LSL(0));
1450 break;
1451 case INDEX_op_sub2_i32:
1452 tcg_out_dat_reg2(s, COND_AL, ARITH_SUB, ARITH_SBC,
1453 args[0], args[1], args[2], args[3],
1454 args[4], args[5], SHIFT_IMM_LSL(0));
1455 break;
1456 case INDEX_op_neg_i32:
1457 tcg_out_dat_imm(s, COND_AL, ARITH_RSB, args[0], args[1], 0);
1458 break;
1459 case INDEX_op_not_i32:
1460 tcg_out_dat_reg(s, COND_AL,
1461 ARITH_MVN, args[0], 0, args[1], SHIFT_IMM_LSL(0));
1462 break;
1463 case INDEX_op_mul_i32:
1464 tcg_out_mul32(s, COND_AL, args[0], args[1], args[2]);
1465 break;
1466 case INDEX_op_mulu2_i32:
1467 tcg_out_umull32(s, COND_AL, args[0], args[1], args[2], args[3]);
1468 break;
1469 case INDEX_op_div2_i32:
1470 tcg_out_div_helper(s, COND_AL, args,
1471 tcg_helper_div_i64, tcg_helper_rem_i64,
1472 SHIFT_IMM_ASR(31));
1473 break;
1474 case INDEX_op_divu2_i32:
1475 tcg_out_div_helper(s, COND_AL, args,
1476 tcg_helper_divu_i64, tcg_helper_remu_i64,
1477 SHIFT_IMM_LSR(31));
1478 break;
1479 /* XXX: Perhaps args[2] & 0x1f is wrong */
1480 case INDEX_op_shl_i32:
1481 c = const_args[2] ?
1482 SHIFT_IMM_LSL(args[2] & 0x1f) : SHIFT_REG_LSL(args[2]);
1483 goto gen_shift32;
1484 case INDEX_op_shr_i32:
1485 c = const_args[2] ? (args[2] & 0x1f) ? SHIFT_IMM_LSR(args[2] & 0x1f) :
1486 SHIFT_IMM_LSL(0) : SHIFT_REG_LSR(args[2]);
1487 goto gen_shift32;
1488 case INDEX_op_sar_i32:
1489 c = const_args[2] ? (args[2] & 0x1f) ? SHIFT_IMM_ASR(args[2] & 0x1f) :
1490 SHIFT_IMM_LSL(0) : SHIFT_REG_ASR(args[2]);
1491 /* Fall through. */
1492 gen_shift32:
1493 tcg_out_dat_reg(s, COND_AL, ARITH_MOV, args[0], 0, args[1], c);
1494 break;
1495
1496 case INDEX_op_brcond_i32:
1497 tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0,
1498 args[0], args[1], SHIFT_IMM_LSL(0));
1499 tcg_out_goto_label(s, tcg_cond_to_arm_cond[args[2]], args[3]);
1500 break;
1501 case INDEX_op_brcond2_i32:
1502 /* The resulting conditions are:
1503 * TCG_COND_EQ --> a0 == a2 && a1 == a3,
1504 * TCG_COND_NE --> (a0 != a2 && a1 == a3) || a1 != a3,
1505 * TCG_COND_LT(U) --> (a0 < a2 && a1 == a3) || a1 < a3,
1506 * TCG_COND_GE(U) --> (a0 >= a2 && a1 == a3) || (a1 >= a3 && a1 != a3),
1507 * TCG_COND_LE(U) --> (a0 <= a2 && a1 == a3) || (a1 <= a3 && a1 != a3),
1508 * TCG_COND_GT(U) --> (a0 > a2 && a1 == a3) || a1 > a3,
1509 */
1510 tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0,
1511 args[1], args[3], SHIFT_IMM_LSL(0));
1512 tcg_out_dat_reg(s, COND_EQ, ARITH_CMP, 0,
1513 args[0], args[2], SHIFT_IMM_LSL(0));
1514 tcg_out_goto_label(s, tcg_cond_to_arm_cond[args[4]], args[5]);
1515 break;
1516
1517 case INDEX_op_qemu_ld8u:
1518 tcg_out_qemu_ld(s, COND_AL, args, 0);
1519 break;
1520 case INDEX_op_qemu_ld8s:
1521 tcg_out_qemu_ld(s, COND_AL, args, 0 | 4);
1522 break;
1523 case INDEX_op_qemu_ld16u:
1524 tcg_out_qemu_ld(s, COND_AL, args, 1);
1525 break;
1526 case INDEX_op_qemu_ld16s:
1527 tcg_out_qemu_ld(s, COND_AL, args, 1 | 4);
1528 break;
1529 case INDEX_op_qemu_ld32u:
1530 tcg_out_qemu_ld(s, COND_AL, args, 2);
1531 break;
1532 case INDEX_op_qemu_ld64:
1533 tcg_out_qemu_ld(s, COND_AL, args, 3);
1534 break;
1535
1536 case INDEX_op_qemu_st8:
1537 tcg_out_qemu_st(s, COND_AL, args, 0);
1538 break;
1539 case INDEX_op_qemu_st16:
1540 tcg_out_qemu_st(s, COND_AL, args, 1);
1541 break;
1542 case INDEX_op_qemu_st32:
1543 tcg_out_qemu_st(s, COND_AL, args, 2);
1544 break;
1545 case INDEX_op_qemu_st64:
1546 tcg_out_qemu_st(s, COND_AL, args, 3);
1547 break;
1548
1549 case INDEX_op_ext8s_i32:
1550 #ifdef __ARM_ARCH_7A__
1551 /* sxtb */
1552 tcg_out32(s, 0xe6af0070 | (args[0] << 12) | args[1]);
1553 #else
1554 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1555 args[0], 0, args[1], SHIFT_IMM_LSL(24));
1556 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1557 args[0], 0, args[0], SHIFT_IMM_ASR(24));
1558 #endif
1559 break;
1560 case INDEX_op_ext16s_i32:
1561 #ifdef __ARM_ARCH_7A__
1562 /* sxth */
1563 tcg_out32(s, 0xe6bf0070 | (args[0] << 12) | args[1]);
1564 #else
1565 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1566 args[0], 0, args[1], SHIFT_IMM_LSL(16));
1567 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1568 args[0], 0, args[0], SHIFT_IMM_ASR(16));
1569 #endif
1570 break;
1571
1572 default:
1573 tcg_abort();
1574 }
1575 }
1576
1577 static const TCGTargetOpDef arm_op_defs[] = {
1578 { INDEX_op_exit_tb, { } },
1579 { INDEX_op_goto_tb, { } },
1580 { INDEX_op_call, { "ri" } },
1581 { INDEX_op_jmp, { "ri" } },
1582 { INDEX_op_br, { } },
1583
1584 { INDEX_op_mov_i32, { "r", "r" } },
1585 { INDEX_op_movi_i32, { "r" } },
1586
1587 { INDEX_op_ld8u_i32, { "r", "r" } },
1588 { INDEX_op_ld8s_i32, { "r", "r" } },
1589 { INDEX_op_ld16u_i32, { "r", "r" } },
1590 { INDEX_op_ld16s_i32, { "r", "r" } },
1591 { INDEX_op_ld_i32, { "r", "r" } },
1592 { INDEX_op_st8_i32, { "r", "r" } },
1593 { INDEX_op_st16_i32, { "r", "r" } },
1594 { INDEX_op_st_i32, { "r", "r" } },
1595
1596 /* TODO: "r", "r", "ri" */
1597 { INDEX_op_add_i32, { "r", "r", "rI" } },
1598 { INDEX_op_sub_i32, { "r", "r", "rI" } },
1599 { INDEX_op_mul_i32, { "r", "r", "r" } },
1600 { INDEX_op_mulu2_i32, { "r", "r", "r", "r" } },
1601 { INDEX_op_div2_i32, { "r", "r", "r", "1", "2" } },
1602 { INDEX_op_divu2_i32, { "r", "r", "r", "1", "2" } },
1603 { INDEX_op_and_i32, { "r", "r", "rI" } },
1604 { INDEX_op_or_i32, { "r", "r", "rI" } },
1605 { INDEX_op_xor_i32, { "r", "r", "rI" } },
1606 { INDEX_op_neg_i32, { "r", "r" } },
1607 { INDEX_op_not_i32, { "r", "r" } },
1608
1609 { INDEX_op_shl_i32, { "r", "r", "ri" } },
1610 { INDEX_op_shr_i32, { "r", "r", "ri" } },
1611 { INDEX_op_sar_i32, { "r", "r", "ri" } },
1612
1613 { INDEX_op_brcond_i32, { "r", "r" } },
1614
1615 /* TODO: "r", "r", "r", "r", "ri", "ri" */
1616 { INDEX_op_add2_i32, { "r", "r", "r", "r", "r", "r" } },
1617 { INDEX_op_sub2_i32, { "r", "r", "r", "r", "r", "r" } },
1618 { INDEX_op_brcond2_i32, { "r", "r", "r", "r" } },
1619
1620 { INDEX_op_qemu_ld8u, { "r", "x", "X" } },
1621 { INDEX_op_qemu_ld8s, { "r", "x", "X" } },
1622 { INDEX_op_qemu_ld16u, { "r", "x", "X" } },
1623 { INDEX_op_qemu_ld16s, { "r", "x", "X" } },
1624 { INDEX_op_qemu_ld32u, { "r", "x", "X" } },
1625 { INDEX_op_qemu_ld64, { "d", "r", "x", "X" } },
1626
1627 { INDEX_op_qemu_st8, { "x", "x", "X" } },
1628 { INDEX_op_qemu_st16, { "x", "x", "X" } },
1629 { INDEX_op_qemu_st32, { "x", "x", "X" } },
1630 { INDEX_op_qemu_st64, { "x", "D", "x", "X" } },
1631
1632 { INDEX_op_ext8s_i32, { "r", "r" } },
1633 { INDEX_op_ext16s_i32, { "r", "r" } },
1634
1635 { -1 },
1636 };
1637
1638 void tcg_target_init(TCGContext *s)
1639 {
1640 /* fail safe */
1641 if ((1 << CPU_TLB_ENTRY_BITS) != sizeof(CPUTLBEntry))
1642 tcg_abort();
1643
1644 tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0,
1645 ((2 << TCG_REG_R14) - 1) & ~(1 << TCG_REG_R8));
1646 tcg_regset_set32(tcg_target_call_clobber_regs, 0,
1647 ((2 << TCG_REG_R3) - 1) |
1648 (1 << TCG_REG_R12) | (1 << TCG_REG_R14));
1649
1650 tcg_regset_clear(s->reserved_regs);
1651 #ifdef SAVE_LR
1652 tcg_regset_set_reg(s->reserved_regs, TCG_REG_R14);
1653 #endif
1654 tcg_regset_set_reg(s->reserved_regs, TCG_REG_CALL_STACK);
1655 tcg_regset_set_reg(s->reserved_regs, TCG_REG_R8);
1656
1657 tcg_add_target_add_op_defs(arm_op_defs);
1658 }
1659
1660 static inline void tcg_out_ld(TCGContext *s, TCGType type, int arg,
1661 int arg1, tcg_target_long arg2)
1662 {
1663 tcg_out_ld32u(s, COND_AL, arg, arg1, arg2);
1664 }
1665
1666 static inline void tcg_out_st(TCGContext *s, TCGType type, int arg,
1667 int arg1, tcg_target_long arg2)
1668 {
1669 tcg_out_st32(s, COND_AL, arg, arg1, arg2);
1670 }
1671
1672 static void tcg_out_addi(TCGContext *s, int reg, tcg_target_long val)
1673 {
1674 if (val > 0)
1675 if (val < 0x100)
1676 tcg_out_dat_imm(s, COND_AL, ARITH_ADD, reg, reg, val);
1677 else
1678 tcg_abort();
1679 else if (val < 0) {
1680 if (val > -0x100)
1681 tcg_out_dat_imm(s, COND_AL, ARITH_SUB, reg, reg, -val);
1682 else
1683 tcg_abort();
1684 }
1685 }
1686
1687 static inline void tcg_out_mov(TCGContext *s, int ret, int arg)
1688 {
1689 tcg_out_dat_reg(s, COND_AL, ARITH_MOV, ret, 0, arg, SHIFT_IMM_LSL(0));
1690 }
1691
1692 static inline void tcg_out_movi(TCGContext *s, TCGType type,
1693 int ret, tcg_target_long arg)
1694 {
1695 tcg_out_movi32(s, COND_AL, ret, arg);
1696 }
1697
1698 void tcg_target_qemu_prologue(TCGContext *s)
1699 {
1700 /* stmdb sp!, { r9 - r11, lr } */
1701 tcg_out32(s, (COND_AL << 28) | 0x092d4e00);
1702
1703 tcg_out_bx(s, COND_AL, TCG_REG_R0);
1704 tb_ret_addr = s->code_ptr;
1705
1706 /* ldmia sp!, { r9 - r11, pc } */
1707 tcg_out32(s, (COND_AL << 28) | 0x08bd8e00);
1708 }
Anthony Liguori's QEMU queue