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tcg/arm: Replace qemu_ld32u (left over from previous commit)
[qemu/ar7.git] / tcg / arm / tcg-target.c
blobf0f669d6677dae702c4c63faa2a80aa7d5bba923
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 default:
161 return -1;
162 }
163 ct_str++;
164 *pct_str = ct_str;
165
166 return 0;
167 }
168
169 static inline uint32_t rotl(uint32_t val, int n)
170 {
171 return (val << n) | (val >> (32 - n));
172 }
173
174 /* ARM immediates for ALU instructions are made of an unsigned 8-bit
175 right-rotated by an even amount between 0 and 30. */
176 static inline int encode_imm(uint32_t imm)
177 {
178 int shift;
179
180 /* simple case, only lower bits */
181 if ((imm & ~0xff) == 0)
182 return 0;
183 /* then try a simple even shift */
184 shift = ctz32(imm) & ~1;
185 if (((imm >> shift) & ~0xff) == 0)
186 return 32 - shift;
187 /* now try harder with rotations */
188 if ((rotl(imm, 2) & ~0xff) == 0)
189 return 2;
190 if ((rotl(imm, 4) & ~0xff) == 0)
191 return 4;
192 if ((rotl(imm, 6) & ~0xff) == 0)
193 return 6;
194 /* imm can't be encoded */
195 return -1;
196 }
197
198 static inline int check_fit_imm(uint32_t imm)
199 {
200 return encode_imm(imm) >= 0;
201 }
202
203 /* Test if a constant matches the constraint.
204 * TODO: define constraints for:
205 *
206 * ldr/str offset: between -0xfff and 0xfff
207 * ldrh/strh offset: between -0xff and 0xff
208 * mov operand2: values represented with x << (2 * y), x < 0x100
209 * add, sub, eor...: ditto
210 */
211 static inline int tcg_target_const_match(tcg_target_long val,
212 const TCGArgConstraint *arg_ct)
213 {
214 int ct;
215 ct = arg_ct->ct;
216 if (ct & TCG_CT_CONST)
217 return 1;
218 else if ((ct & TCG_CT_CONST_ARM) && check_fit_imm(val))
219 return 1;
220 else
221 return 0;
222 }
223
224 enum arm_data_opc_e {
225 ARITH_AND = 0x0,
226 ARITH_EOR = 0x1,
227 ARITH_SUB = 0x2,
228 ARITH_RSB = 0x3,
229 ARITH_ADD = 0x4,
230 ARITH_ADC = 0x5,
231 ARITH_SBC = 0x6,
232 ARITH_RSC = 0x7,
233 ARITH_TST = 0x8,
234 ARITH_CMP = 0xa,
235 ARITH_CMN = 0xb,
236 ARITH_ORR = 0xc,
237 ARITH_MOV = 0xd,
238 ARITH_BIC = 0xe,
239 ARITH_MVN = 0xf,
240 };
241
242 #define TO_CPSR(opc) \
243 ((opc == ARITH_CMP || opc == ARITH_CMN || opc == ARITH_TST) << 20)
244
245 #define SHIFT_IMM_LSL(im) (((im) << 7) | 0x00)
246 #define SHIFT_IMM_LSR(im) (((im) << 7) | 0x20)
247 #define SHIFT_IMM_ASR(im) (((im) << 7) | 0x40)
248 #define SHIFT_IMM_ROR(im) (((im) << 7) | 0x60)
249 #define SHIFT_REG_LSL(rs) (((rs) << 8) | 0x10)
250 #define SHIFT_REG_LSR(rs) (((rs) << 8) | 0x30)
251 #define SHIFT_REG_ASR(rs) (((rs) << 8) | 0x50)
252 #define SHIFT_REG_ROR(rs) (((rs) << 8) | 0x70)
253
254 enum arm_cond_code_e {
255 COND_EQ = 0x0,
256 COND_NE = 0x1,
257 COND_CS = 0x2, /* Unsigned greater or equal */
258 COND_CC = 0x3, /* Unsigned less than */
259 COND_MI = 0x4, /* Negative */
260 COND_PL = 0x5, /* Zero or greater */
261 COND_VS = 0x6, /* Overflow */
262 COND_VC = 0x7, /* No overflow */
263 COND_HI = 0x8, /* Unsigned greater than */
264 COND_LS = 0x9, /* Unsigned less or equal */
265 COND_GE = 0xa,
266 COND_LT = 0xb,
267 COND_GT = 0xc,
268 COND_LE = 0xd,
269 COND_AL = 0xe,
270 };
271
272 static const uint8_t tcg_cond_to_arm_cond[10] = {
273 [TCG_COND_EQ] = COND_EQ,
274 [TCG_COND_NE] = COND_NE,
275 [TCG_COND_LT] = COND_LT,
276 [TCG_COND_GE] = COND_GE,
277 [TCG_COND_LE] = COND_LE,
278 [TCG_COND_GT] = COND_GT,
279 /* unsigned */
280 [TCG_COND_LTU] = COND_CC,
281 [TCG_COND_GEU] = COND_CS,
282 [TCG_COND_LEU] = COND_LS,
283 [TCG_COND_GTU] = COND_HI,
284 };
285
286 static inline void tcg_out_bx(TCGContext *s, int cond, int rn)
287 {
288 tcg_out32(s, (cond << 28) | 0x012fff10 | rn);
289 }
290
291 static inline void tcg_out_b(TCGContext *s, int cond, int32_t offset)
292 {
293 tcg_out32(s, (cond << 28) | 0x0a000000 |
294 (((offset - 8) >> 2) & 0x00ffffff));
295 }
296
297 static inline void tcg_out_b_noaddr(TCGContext *s, int cond)
298 {
299 #ifdef HOST_WORDS_BIGENDIAN
300 tcg_out8(s, (cond << 4) | 0x0a);
301 s->code_ptr += 3;
302 #else
303 s->code_ptr += 3;
304 tcg_out8(s, (cond << 4) | 0x0a);
305 #endif
306 }
307
308 static inline void tcg_out_bl(TCGContext *s, int cond, int32_t offset)
309 {
310 tcg_out32(s, (cond << 28) | 0x0b000000 |
311 (((offset - 8) >> 2) & 0x00ffffff));
312 }
313
314 static inline void tcg_out_dat_reg(TCGContext *s,
315 int cond, int opc, int rd, int rn, int rm, int shift)
316 {
317 tcg_out32(s, (cond << 28) | (0 << 25) | (opc << 21) | TO_CPSR(opc) |
318 (rn << 16) | (rd << 12) | shift | rm);
319 }
320
321 static inline void tcg_out_dat_reg2(TCGContext *s,
322 int cond, int opc0, int opc1, int rd0, int rd1,
323 int rn0, int rn1, int rm0, int rm1, int shift)
324 {
325 if (rd0 == rn1 || rd0 == rm1) {
326 tcg_out32(s, (cond << 28) | (0 << 25) | (opc0 << 21) | (1 << 20) |
327 (rn0 << 16) | (8 << 12) | shift | rm0);
328 tcg_out32(s, (cond << 28) | (0 << 25) | (opc1 << 21) |
329 (rn1 << 16) | (rd1 << 12) | shift | rm1);
330 tcg_out_dat_reg(s, cond, ARITH_MOV,
331 rd0, 0, TCG_REG_R8, SHIFT_IMM_LSL(0));
332 } else {
333 tcg_out32(s, (cond << 28) | (0 << 25) | (opc0 << 21) | (1 << 20) |
334 (rn0 << 16) | (rd0 << 12) | shift | rm0);
335 tcg_out32(s, (cond << 28) | (0 << 25) | (opc1 << 21) |
336 (rn1 << 16) | (rd1 << 12) | shift | rm1);
337 }
338 }
339
340 static inline void tcg_out_dat_imm(TCGContext *s,
341 int cond, int opc, int rd, int rn, int im)
342 {
343 tcg_out32(s, (cond << 28) | (1 << 25) | (opc << 21) | TO_CPSR(opc) |
344 (rn << 16) | (rd << 12) | im);
345 }
346
347 static inline void tcg_out_movi32(TCGContext *s,
348 int cond, int rd, int32_t arg)
349 {
350 int offset = (uint32_t) arg - ((uint32_t) s->code_ptr + 8);
351
352 /* TODO: This is very suboptimal, we can easily have a constant
353 * pool somewhere after all the instructions. */
354
355 if (arg < 0 && arg > -0x100)
356 return tcg_out_dat_imm(s, cond, ARITH_MVN, rd, 0, (~arg) & 0xff);
357
358 if (offset < 0x100 && offset > -0x100)
359 return offset >= 0 ?
360 tcg_out_dat_imm(s, cond, ARITH_ADD, rd, 15, offset) :
361 tcg_out_dat_imm(s, cond, ARITH_SUB, rd, 15, -offset);
362
363 #ifdef __ARM_ARCH_7A__
364 /* use movw/movt */
365 /* movw */
366 tcg_out32(s, (cond << 28) | 0x03000000 | (rd << 12)
367 | ((arg << 4) & 0x000f0000) | (arg & 0xfff));
368 if (arg & 0xffff0000)
369 /* movt */
370 tcg_out32(s, (cond << 28) | 0x03400000 | (rd << 12)
371 | ((arg >> 12) & 0x000f0000) | ((arg >> 16) & 0xfff));
372 #else
373 tcg_out_dat_imm(s, cond, ARITH_MOV, rd, 0, arg & 0xff);
374 if (arg & 0x0000ff00)
375 tcg_out_dat_imm(s, cond, ARITH_ORR, rd, rd,
376 ((arg >> 8) & 0xff) | 0xc00);
377 if (arg & 0x00ff0000)
378 tcg_out_dat_imm(s, cond, ARITH_ORR, rd, rd,
379 ((arg >> 16) & 0xff) | 0x800);
380 if (arg & 0xff000000)
381 tcg_out_dat_imm(s, cond, ARITH_ORR, rd, rd,
382 ((arg >> 24) & 0xff) | 0x400);
383 #endif
384 }
385
386 static inline void tcg_out_mul32(TCGContext *s,
387 int cond, int rd, int rs, int rm)
388 {
389 if (rd != rm)
390 tcg_out32(s, (cond << 28) | (rd << 16) | (0 << 12) |
391 (rs << 8) | 0x90 | rm);
392 else if (rd != rs)
393 tcg_out32(s, (cond << 28) | (rd << 16) | (0 << 12) |
394 (rm << 8) | 0x90 | rs);
395 else {
396 tcg_out32(s, (cond << 28) | ( 8 << 16) | (0 << 12) |
397 (rs << 8) | 0x90 | rm);
398 tcg_out_dat_reg(s, cond, ARITH_MOV,
399 rd, 0, 8, SHIFT_IMM_LSL(0));
400 }
401 }
402
403 static inline void tcg_out_umull32(TCGContext *s,
404 int cond, int rd0, int rd1, int rs, int rm)
405 {
406 if (rd0 != rm && rd1 != rm)
407 tcg_out32(s, (cond << 28) | 0x800090 |
408 (rd1 << 16) | (rd0 << 12) | (rs << 8) | rm);
409 else if (rd0 != rs && rd1 != rs)
410 tcg_out32(s, (cond << 28) | 0x800090 |
411 (rd1 << 16) | (rd0 << 12) | (rm << 8) | rs);
412 else {
413 tcg_out_dat_reg(s, cond, ARITH_MOV,
414 TCG_REG_R8, 0, rm, SHIFT_IMM_LSL(0));
415 tcg_out32(s, (cond << 28) | 0x800098 |
416 (rd1 << 16) | (rd0 << 12) | (rs << 8));
417 }
418 }
419
420 static inline void tcg_out_smull32(TCGContext *s,
421 int cond, int rd0, int rd1, int rs, int rm)
422 {
423 if (rd0 != rm && rd1 != rm)
424 tcg_out32(s, (cond << 28) | 0xc00090 |
425 (rd1 << 16) | (rd0 << 12) | (rs << 8) | rm);
426 else if (rd0 != rs && rd1 != rs)
427 tcg_out32(s, (cond << 28) | 0xc00090 |
428 (rd1 << 16) | (rd0 << 12) | (rm << 8) | rs);
429 else {
430 tcg_out_dat_reg(s, cond, ARITH_MOV,
431 TCG_REG_R8, 0, rm, SHIFT_IMM_LSL(0));
432 tcg_out32(s, (cond << 28) | 0xc00098 |
433 (rd1 << 16) | (rd0 << 12) | (rs << 8));
434 }
435 }
436
437 static inline void tcg_out_ld32_12(TCGContext *s, int cond,
438 int rd, int rn, tcg_target_long im)
439 {
440 if (im >= 0)
441 tcg_out32(s, (cond << 28) | 0x05900000 |
442 (rn << 16) | (rd << 12) | (im & 0xfff));
443 else
444 tcg_out32(s, (cond << 28) | 0x05100000 |
445 (rn << 16) | (rd << 12) | ((-im) & 0xfff));
446 }
447
448 static inline void tcg_out_st32_12(TCGContext *s, int cond,
449 int rd, int rn, tcg_target_long im)
450 {
451 if (im >= 0)
452 tcg_out32(s, (cond << 28) | 0x05800000 |
453 (rn << 16) | (rd << 12) | (im & 0xfff));
454 else
455 tcg_out32(s, (cond << 28) | 0x05000000 |
456 (rn << 16) | (rd << 12) | ((-im) & 0xfff));
457 }
458
459 static inline void tcg_out_ld32_r(TCGContext *s, int cond,
460 int rd, int rn, int rm)
461 {
462 tcg_out32(s, (cond << 28) | 0x07900000 |
463 (rn << 16) | (rd << 12) | rm);
464 }
465
466 static inline void tcg_out_st32_r(TCGContext *s, int cond,
467 int rd, int rn, int rm)
468 {
469 tcg_out32(s, (cond << 28) | 0x07800000 |
470 (rn << 16) | (rd << 12) | rm);
471 }
472
473 /* Register pre-increment with base writeback. */
474 static inline void tcg_out_ld32_rwb(TCGContext *s, int cond,
475 int rd, int rn, int rm)
476 {
477 tcg_out32(s, (cond << 28) | 0x07b00000 |
478 (rn << 16) | (rd << 12) | rm);
479 }
480
481 static inline void tcg_out_st32_rwb(TCGContext *s, int cond,
482 int rd, int rn, int rm)
483 {
484 tcg_out32(s, (cond << 28) | 0x07a00000 |
485 (rn << 16) | (rd << 12) | rm);
486 }
487
488 static inline void tcg_out_ld16u_8(TCGContext *s, int cond,
489 int rd, int rn, tcg_target_long im)
490 {
491 if (im >= 0)
492 tcg_out32(s, (cond << 28) | 0x01d000b0 |
493 (rn << 16) | (rd << 12) |
494 ((im & 0xf0) << 4) | (im & 0xf));
495 else
496 tcg_out32(s, (cond << 28) | 0x015000b0 |
497 (rn << 16) | (rd << 12) |
498 (((-im) & 0xf0) << 4) | ((-im) & 0xf));
499 }
500
501 static inline void tcg_out_st16u_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) | 0x01c000b0 |
506 (rn << 16) | (rd << 12) |
507 ((im & 0xf0) << 4) | (im & 0xf));
508 else
509 tcg_out32(s, (cond << 28) | 0x014000b0 |
510 (rn << 16) | (rd << 12) |
511 (((-im) & 0xf0) << 4) | ((-im) & 0xf));
512 }
513
514 static inline void tcg_out_ld16u_r(TCGContext *s, int cond,
515 int rd, int rn, int rm)
516 {
517 tcg_out32(s, (cond << 28) | 0x019000b0 |
518 (rn << 16) | (rd << 12) | rm);
519 }
520
521 static inline void tcg_out_st16u_r(TCGContext *s, int cond,
522 int rd, int rn, int rm)
523 {
524 tcg_out32(s, (cond << 28) | 0x018000b0 |
525 (rn << 16) | (rd << 12) | rm);
526 }
527
528 static inline void tcg_out_ld16s_8(TCGContext *s, int cond,
529 int rd, int rn, tcg_target_long im)
530 {
531 if (im >= 0)
532 tcg_out32(s, (cond << 28) | 0x01d000f0 |
533 (rn << 16) | (rd << 12) |
534 ((im & 0xf0) << 4) | (im & 0xf));
535 else
536 tcg_out32(s, (cond << 28) | 0x015000f0 |
537 (rn << 16) | (rd << 12) |
538 (((-im) & 0xf0) << 4) | ((-im) & 0xf));
539 }
540
541 static inline void tcg_out_st16s_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) | 0x01c000f0 |
546 (rn << 16) | (rd << 12) |
547 ((im & 0xf0) << 4) | (im & 0xf));
548 else
549 tcg_out32(s, (cond << 28) | 0x014000f0 |
550 (rn << 16) | (rd << 12) |
551 (((-im) & 0xf0) << 4) | ((-im) & 0xf));
552 }
553
554 static inline void tcg_out_ld16s_r(TCGContext *s, int cond,
555 int rd, int rn, int rm)
556 {
557 tcg_out32(s, (cond << 28) | 0x019000f0 |
558 (rn << 16) | (rd << 12) | rm);
559 }
560
561 static inline void tcg_out_st16s_r(TCGContext *s, int cond,
562 int rd, int rn, int rm)
563 {
564 tcg_out32(s, (cond << 28) | 0x018000f0 |
565 (rn << 16) | (rd << 12) | rm);
566 }
567
568 static inline void tcg_out_ld8_12(TCGContext *s, int cond,
569 int rd, int rn, tcg_target_long im)
570 {
571 if (im >= 0)
572 tcg_out32(s, (cond << 28) | 0x05d00000 |
573 (rn << 16) | (rd << 12) | (im & 0xfff));
574 else
575 tcg_out32(s, (cond << 28) | 0x05500000 |
576 (rn << 16) | (rd << 12) | ((-im) & 0xfff));
577 }
578
579 static inline void tcg_out_st8_12(TCGContext *s, int cond,
580 int rd, int rn, tcg_target_long im)
581 {
582 if (im >= 0)
583 tcg_out32(s, (cond << 28) | 0x05c00000 |
584 (rn << 16) | (rd << 12) | (im & 0xfff));
585 else
586 tcg_out32(s, (cond << 28) | 0x05400000 |
587 (rn << 16) | (rd << 12) | ((-im) & 0xfff));
588 }
589
590 static inline void tcg_out_ld8_r(TCGContext *s, int cond,
591 int rd, int rn, int rm)
592 {
593 tcg_out32(s, (cond << 28) | 0x07d00000 |
594 (rn << 16) | (rd << 12) | rm);
595 }
596
597 static inline void tcg_out_st8_r(TCGContext *s, int cond,
598 int rd, int rn, int rm)
599 {
600 tcg_out32(s, (cond << 28) | 0x07c00000 |
601 (rn << 16) | (rd << 12) | rm);
602 }
603
604 static inline void tcg_out_ld8s_8(TCGContext *s, int cond,
605 int rd, int rn, tcg_target_long im)
606 {
607 if (im >= 0)
608 tcg_out32(s, (cond << 28) | 0x01d000d0 |
609 (rn << 16) | (rd << 12) |
610 ((im & 0xf0) << 4) | (im & 0xf));
611 else
612 tcg_out32(s, (cond << 28) | 0x015000d0 |
613 (rn << 16) | (rd << 12) |
614 (((-im) & 0xf0) << 4) | ((-im) & 0xf));
615 }
616
617 static inline void tcg_out_st8s_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) | 0x01c000d0 |
622 (rn << 16) | (rd << 12) |
623 ((im & 0xf0) << 4) | (im & 0xf));
624 else
625 tcg_out32(s, (cond << 28) | 0x014000d0 |
626 (rn << 16) | (rd << 12) |
627 (((-im) & 0xf0) << 4) | ((-im) & 0xf));
628 }
629
630 static inline void tcg_out_ld8s_r(TCGContext *s, int cond,
631 int rd, int rn, int rm)
632 {
633 tcg_out32(s, (cond << 28) | 0x019000d0 |
634 (rn << 16) | (rd << 12) | rm);
635 }
636
637 static inline void tcg_out_st8s_r(TCGContext *s, int cond,
638 int rd, int rn, int rm)
639 {
640 tcg_out32(s, (cond << 28) | 0x018000d0 |
641 (rn << 16) | (rd << 12) | rm);
642 }
643
644 static inline void tcg_out_ld32u(TCGContext *s, int cond,
645 int rd, int rn, int32_t offset)
646 {
647 if (offset > 0xfff || offset < -0xfff) {
648 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
649 tcg_out_ld32_r(s, cond, rd, rn, TCG_REG_R8);
650 } else
651 tcg_out_ld32_12(s, cond, rd, rn, offset);
652 }
653
654 static inline void tcg_out_st32(TCGContext *s, int cond,
655 int rd, int rn, int32_t offset)
656 {
657 if (offset > 0xfff || offset < -0xfff) {
658 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
659 tcg_out_st32_r(s, cond, rd, rn, TCG_REG_R8);
660 } else
661 tcg_out_st32_12(s, cond, rd, rn, offset);
662 }
663
664 static inline void tcg_out_ld16u(TCGContext *s, int cond,
665 int rd, int rn, int32_t offset)
666 {
667 if (offset > 0xff || offset < -0xff) {
668 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
669 tcg_out_ld16u_r(s, cond, rd, rn, TCG_REG_R8);
670 } else
671 tcg_out_ld16u_8(s, cond, rd, rn, offset);
672 }
673
674 static inline void tcg_out_ld16s(TCGContext *s, int cond,
675 int rd, int rn, int32_t offset)
676 {
677 if (offset > 0xff || offset < -0xff) {
678 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
679 tcg_out_ld16s_r(s, cond, rd, rn, TCG_REG_R8);
680 } else
681 tcg_out_ld16s_8(s, cond, rd, rn, offset);
682 }
683
684 static inline void tcg_out_st16u(TCGContext *s, int cond,
685 int rd, int rn, int32_t offset)
686 {
687 if (offset > 0xff || offset < -0xff) {
688 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
689 tcg_out_st16u_r(s, cond, rd, rn, TCG_REG_R8);
690 } else
691 tcg_out_st16u_8(s, cond, rd, rn, offset);
692 }
693
694 static inline void tcg_out_ld8u(TCGContext *s, int cond,
695 int rd, int rn, int32_t offset)
696 {
697 if (offset > 0xfff || offset < -0xfff) {
698 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
699 tcg_out_ld8_r(s, cond, rd, rn, TCG_REG_R8);
700 } else
701 tcg_out_ld8_12(s, cond, rd, rn, offset);
702 }
703
704 static inline void tcg_out_ld8s(TCGContext *s, int cond,
705 int rd, int rn, int32_t offset)
706 {
707 if (offset > 0xff || offset < -0xff) {
708 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
709 tcg_out_ld8s_r(s, cond, rd, rn, TCG_REG_R8);
710 } else
711 tcg_out_ld8s_8(s, cond, rd, rn, offset);
712 }
713
714 static inline void tcg_out_st8u(TCGContext *s, int cond,
715 int rd, int rn, int32_t offset)
716 {
717 if (offset > 0xfff || offset < -0xfff) {
718 tcg_out_movi32(s, cond, TCG_REG_R8, offset);
719 tcg_out_st8_r(s, cond, rd, rn, TCG_REG_R8);
720 } else
721 tcg_out_st8_12(s, cond, rd, rn, offset);
722 }
723
724 static inline void tcg_out_goto(TCGContext *s, int cond, uint32_t addr)
725 {
726 int32_t val;
727
728 val = addr - (tcg_target_long) s->code_ptr;
729 if (val - 8 < 0x01fffffd && val - 8 > -0x01fffffd)
730 tcg_out_b(s, cond, val);
731 else {
732 #if 1
733 tcg_abort();
734 #else
735 if (cond == COND_AL) {
736 tcg_out_ld32_12(s, COND_AL, 15, 15, -4);
737 tcg_out32(s, addr); /* XXX: This is l->u.value, can we use it? */
738 } else {
739 tcg_out_movi32(s, cond, TCG_REG_R8, val - 8);
740 tcg_out_dat_reg(s, cond, ARITH_ADD,
741 15, 15, TCG_REG_R8, SHIFT_IMM_LSL(0));
742 }
743 #endif
744 }
745 }
746
747 static inline void tcg_out_call(TCGContext *s, int cond, uint32_t addr)
748 {
749 int32_t val;
750
751 #ifdef SAVE_LR
752 tcg_out_dat_reg(s, cond, ARITH_MOV, TCG_REG_R8, 0, 14, SHIFT_IMM_LSL(0));
753 #endif
754
755 val = addr - (tcg_target_long) s->code_ptr;
756 if (val < 0x01fffffd && val > -0x01fffffd)
757 tcg_out_bl(s, cond, val);
758 else {
759 #if 1
760 tcg_abort();
761 #else
762 if (cond == COND_AL) {
763 tcg_out_dat_imm(s, cond, ARITH_ADD, 14, 15, 4);
764 tcg_out_ld32_12(s, COND_AL, 15, 15, -4);
765 tcg_out32(s, addr); /* XXX: This is l->u.value, can we use it? */
766 } else {
767 tcg_out_movi32(s, cond, TCG_REG_R9, addr);
768 tcg_out_dat_imm(s, cond, ARITH_MOV, 14, 0, 15);
769 tcg_out_bx(s, cond, TCG_REG_R9);
770 }
771 #endif
772 }
773
774 #ifdef SAVE_LR
775 tcg_out_dat_reg(s, cond, ARITH_MOV, 14, 0, TCG_REG_R8, SHIFT_IMM_LSL(0));
776 #endif
777 }
778
779 static inline void tcg_out_callr(TCGContext *s, int cond, int arg)
780 {
781 #ifdef SAVE_LR
782 tcg_out_dat_reg(s, cond, ARITH_MOV, TCG_REG_R8, 0, 14, SHIFT_IMM_LSL(0));
783 #endif
784 /* TODO: on ARMv5 and ARMv6 replace with tcg_out_blx(s, cond, arg); */
785 tcg_out_dat_reg(s, cond, ARITH_MOV, 14, 0, 15, SHIFT_IMM_LSL(0));
786 tcg_out_bx(s, cond, arg);
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_goto_label(TCGContext *s, int cond, int label_index)
793 {
794 TCGLabel *l = &s->labels[label_index];
795
796 if (l->has_value)
797 tcg_out_goto(s, cond, l->u.value);
798 else if (cond == COND_AL) {
799 tcg_out_ld32_12(s, COND_AL, 15, 15, -4);
800 tcg_out_reloc(s, s->code_ptr, R_ARM_ABS32, label_index, 31337);
801 s->code_ptr += 4;
802 } else {
803 /* Probably this should be preferred even for COND_AL... */
804 tcg_out_reloc(s, s->code_ptr, R_ARM_PC24, label_index, 31337);
805 tcg_out_b_noaddr(s, cond);
806 }
807 }
808
809 #ifdef CONFIG_SOFTMMU
810
811 #include "../../softmmu_defs.h"
812
813 static void *qemu_ld_helpers[4] = {
814 __ldb_mmu,
815 __ldw_mmu,
816 __ldl_mmu,
817 __ldq_mmu,
818 };
819
820 static void *qemu_st_helpers[4] = {
821 __stb_mmu,
822 __stw_mmu,
823 __stl_mmu,
824 __stq_mmu,
825 };
826 #endif
827
828 #define TLB_SHIFT (CPU_TLB_ENTRY_BITS + CPU_TLB_BITS)
829
830 static inline void tcg_out_qemu_ld(TCGContext *s, int cond,
831 const TCGArg *args, int opc)
832 {
833 int addr_reg, data_reg, data_reg2;
834 #ifdef CONFIG_SOFTMMU
835 int mem_index, s_bits;
836 # if TARGET_LONG_BITS == 64
837 int addr_reg2;
838 # endif
839 uint32_t *label_ptr;
840 #endif
841
842 data_reg = *args++;
843 if (opc == 3)
844 data_reg2 = *args++;
845 else
846 data_reg2 = 0; /* suppress warning */
847 addr_reg = *args++;
848 #ifdef CONFIG_SOFTMMU
849 # if TARGET_LONG_BITS == 64
850 addr_reg2 = *args++;
851 # endif
852 mem_index = *args;
853 s_bits = opc & 3;
854
855 /* Should generate something like the following:
856 * shr r8, addr_reg, #TARGET_PAGE_BITS
857 * and r0, r8, #(CPU_TLB_SIZE - 1) @ Assumption: CPU_TLB_BITS <= 8
858 * add r0, env, r0 lsl #CPU_TLB_ENTRY_BITS
859 */
860 # if CPU_TLB_BITS > 8
861 # error
862 # endif
863 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
864 8, 0, addr_reg, SHIFT_IMM_LSR(TARGET_PAGE_BITS));
865 tcg_out_dat_imm(s, COND_AL, ARITH_AND,
866 0, 8, CPU_TLB_SIZE - 1);
867 tcg_out_dat_reg(s, COND_AL, ARITH_ADD,
868 0, TCG_AREG0, 0, SHIFT_IMM_LSL(CPU_TLB_ENTRY_BITS));
869 /* In the
870 * ldr r1 [r0, #(offsetof(CPUState, tlb_table[mem_index][0].addr_read))]
871 * below, the offset is likely to exceed 12 bits if mem_index != 0 and
872 * not exceed otherwise, so use an
873 * add r0, r0, #(mem_index * sizeof *CPUState.tlb_table)
874 * before.
875 */
876 if (mem_index)
877 tcg_out_dat_imm(s, COND_AL, ARITH_ADD, 0, 0,
878 (mem_index << (TLB_SHIFT & 1)) |
879 ((16 - (TLB_SHIFT >> 1)) << 8));
880 tcg_out_ld32_12(s, COND_AL, 1, 0,
881 offsetof(CPUState, tlb_table[0][0].addr_read));
882 tcg_out_dat_reg(s, COND_AL, ARITH_CMP,
883 0, 1, 8, SHIFT_IMM_LSL(TARGET_PAGE_BITS));
884 /* Check alignment. */
885 if (s_bits)
886 tcg_out_dat_imm(s, COND_EQ, ARITH_TST,
887 0, addr_reg, (1 << s_bits) - 1);
888 # if TARGET_LONG_BITS == 64
889 /* XXX: possibly we could use a block data load or writeback in
890 * the first access. */
891 tcg_out_ld32_12(s, COND_EQ, 1, 0,
892 offsetof(CPUState, tlb_table[0][0].addr_read) + 4);
893 tcg_out_dat_reg(s, COND_EQ, ARITH_CMP,
894 0, 1, addr_reg2, SHIFT_IMM_LSL(0));
895 # endif
896 tcg_out_ld32_12(s, COND_EQ, 1, 0,
897 offsetof(CPUState, tlb_table[0][0].addend));
898
899 switch (opc) {
900 case 0:
901 tcg_out_ld8_r(s, COND_EQ, data_reg, addr_reg, 1);
902 break;
903 case 0 | 4:
904 tcg_out_ld8s_r(s, COND_EQ, data_reg, addr_reg, 1);
905 break;
906 case 1:
907 tcg_out_ld16u_r(s, COND_EQ, data_reg, addr_reg, 1);
908 break;
909 case 1 | 4:
910 tcg_out_ld16s_r(s, COND_EQ, data_reg, addr_reg, 1);
911 break;
912 case 2:
913 default:
914 tcg_out_ld32_r(s, COND_EQ, data_reg, addr_reg, 1);
915 break;
916 case 3:
917 tcg_out_ld32_rwb(s, COND_EQ, data_reg, 1, addr_reg);
918 tcg_out_ld32_12(s, COND_EQ, data_reg2, 1, 4);
919 break;
920 }
921
922 label_ptr = (void *) s->code_ptr;
923 tcg_out_b(s, COND_EQ, 8);
924
925 # ifdef SAVE_LR
926 tcg_out_dat_reg(s, cond, ARITH_MOV, 8, 0, 14, SHIFT_IMM_LSL(0));
927 # endif
928
929 /* TODO: move this code to where the constants pool will be */
930 if (addr_reg)
931 tcg_out_dat_reg(s, cond, ARITH_MOV,
932 0, 0, addr_reg, SHIFT_IMM_LSL(0));
933 # if TARGET_LONG_BITS == 32
934 tcg_out_dat_imm(s, cond, ARITH_MOV, 1, 0, mem_index);
935 # else
936 if (addr_reg2 != 1)
937 tcg_out_dat_reg(s, cond, ARITH_MOV,
938 1, 0, addr_reg2, SHIFT_IMM_LSL(0));
939 tcg_out_dat_imm(s, cond, ARITH_MOV, 2, 0, mem_index);
940 # endif
941 tcg_out_bl(s, cond, (tcg_target_long) qemu_ld_helpers[s_bits] -
942 (tcg_target_long) s->code_ptr);
943
944 switch (opc) {
945 case 0 | 4:
946 tcg_out_dat_reg(s, cond, ARITH_MOV,
947 0, 0, 0, SHIFT_IMM_LSL(24));
948 tcg_out_dat_reg(s, cond, ARITH_MOV,
949 data_reg, 0, 0, SHIFT_IMM_ASR(24));
950 break;
951 case 1 | 4:
952 tcg_out_dat_reg(s, cond, ARITH_MOV,
953 0, 0, 0, SHIFT_IMM_LSL(16));
954 tcg_out_dat_reg(s, cond, ARITH_MOV,
955 data_reg, 0, 0, SHIFT_IMM_ASR(16));
956 break;
957 case 0:
958 case 1:
959 case 2:
960 default:
961 if (data_reg)
962 tcg_out_dat_reg(s, cond, ARITH_MOV,
963 data_reg, 0, 0, SHIFT_IMM_LSL(0));
964 break;
965 case 3:
966 if (data_reg != 0)
967 tcg_out_dat_reg(s, cond, ARITH_MOV,
968 data_reg, 0, 0, SHIFT_IMM_LSL(0));
969 if (data_reg2 != 1)
970 tcg_out_dat_reg(s, cond, ARITH_MOV,
971 data_reg2, 0, 1, SHIFT_IMM_LSL(0));
972 break;
973 }
974
975 # ifdef SAVE_LR
976 tcg_out_dat_reg(s, cond, ARITH_MOV, 14, 0, 8, SHIFT_IMM_LSL(0));
977 # endif
978
979 *label_ptr += ((void *) s->code_ptr - (void *) label_ptr - 8) >> 2;
980 #else /* !CONFIG_SOFTMMU */
981 if (GUEST_BASE) {
982 uint32_t offset = GUEST_BASE;
983 int i;
984 int rot;
985
986 while (offset) {
987 i = ctz32(offset) & ~1;
988 rot = ((32 - i) << 7) & 0xf00;
989
990 tcg_out_dat_imm(s, COND_AL, ARITH_ADD, 8, addr_reg,
991 ((offset >> i) & 0xff) | rot);
992 addr_reg = 8;
993 offset &= ~(0xff << i);
994 }
995 }
996 switch (opc) {
997 case 0:
998 tcg_out_ld8_12(s, COND_AL, data_reg, addr_reg, 0);
999 break;
1000 case 0 | 4:
1001 tcg_out_ld8s_8(s, COND_AL, data_reg, addr_reg, 0);
1002 break;
1003 case 1:
1004 tcg_out_ld16u_8(s, COND_AL, data_reg, addr_reg, 0);
1005 break;
1006 case 1 | 4:
1007 tcg_out_ld16s_8(s, COND_AL, data_reg, addr_reg, 0);
1008 break;
1009 case 2:
1010 default:
1011 tcg_out_ld32_12(s, COND_AL, data_reg, addr_reg, 0);
1012 break;
1013 case 3:
1014 /* TODO: use block load -
1015 * check that data_reg2 > data_reg or the other way */
1016 if (data_reg == addr_reg) {
1017 tcg_out_ld32_12(s, COND_AL, data_reg2, addr_reg, 4);
1018 tcg_out_ld32_12(s, COND_AL, data_reg, addr_reg, 0);
1019 } else {
1020 tcg_out_ld32_12(s, COND_AL, data_reg, addr_reg, 0);
1021 tcg_out_ld32_12(s, COND_AL, data_reg2, addr_reg, 4);
1022 }
1023 break;
1024 }
1025 #endif
1026 }
1027
1028 static inline void tcg_out_qemu_st(TCGContext *s, int cond,
1029 const TCGArg *args, int opc)
1030 {
1031 int addr_reg, data_reg, data_reg2;
1032 #ifdef CONFIG_SOFTMMU
1033 int mem_index, s_bits;
1034 # if TARGET_LONG_BITS == 64
1035 int addr_reg2;
1036 # endif
1037 uint32_t *label_ptr;
1038 #endif
1039
1040 data_reg = *args++;
1041 if (opc == 3)
1042 data_reg2 = *args++;
1043 else
1044 data_reg2 = 0; /* suppress warning */
1045 addr_reg = *args++;
1046 #ifdef CONFIG_SOFTMMU
1047 # if TARGET_LONG_BITS == 64
1048 addr_reg2 = *args++;
1049 # endif
1050 mem_index = *args;
1051 s_bits = opc & 3;
1052
1053 /* Should generate something like the following:
1054 * shr r8, addr_reg, #TARGET_PAGE_BITS
1055 * and r0, r8, #(CPU_TLB_SIZE - 1) @ Assumption: CPU_TLB_BITS <= 8
1056 * add r0, env, r0 lsl #CPU_TLB_ENTRY_BITS
1057 */
1058 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1059 8, 0, addr_reg, SHIFT_IMM_LSR(TARGET_PAGE_BITS));
1060 tcg_out_dat_imm(s, COND_AL, ARITH_AND,
1061 0, 8, CPU_TLB_SIZE - 1);
1062 tcg_out_dat_reg(s, COND_AL, ARITH_ADD,
1063 0, TCG_AREG0, 0, SHIFT_IMM_LSL(CPU_TLB_ENTRY_BITS));
1064 /* In the
1065 * ldr r1 [r0, #(offsetof(CPUState, tlb_table[mem_index][0].addr_write))]
1066 * below, the offset is likely to exceed 12 bits if mem_index != 0 and
1067 * not exceed otherwise, so use an
1068 * add r0, r0, #(mem_index * sizeof *CPUState.tlb_table)
1069 * before.
1070 */
1071 if (mem_index)
1072 tcg_out_dat_imm(s, COND_AL, ARITH_ADD, 0, 0,
1073 (mem_index << (TLB_SHIFT & 1)) |
1074 ((16 - (TLB_SHIFT >> 1)) << 8));
1075 tcg_out_ld32_12(s, COND_AL, 1, 0,
1076 offsetof(CPUState, tlb_table[0][0].addr_write));
1077 tcg_out_dat_reg(s, COND_AL, ARITH_CMP,
1078 0, 1, 8, SHIFT_IMM_LSL(TARGET_PAGE_BITS));
1079 /* Check alignment. */
1080 if (s_bits)
1081 tcg_out_dat_imm(s, COND_EQ, ARITH_TST,
1082 0, addr_reg, (1 << s_bits) - 1);
1083 # if TARGET_LONG_BITS == 64
1084 /* XXX: possibly we could use a block data load or writeback in
1085 * the first access. */
1086 tcg_out_ld32_12(s, COND_EQ, 1, 0,
1087 offsetof(CPUState, tlb_table[0][0].addr_write)
1088 + 4);
1089 tcg_out_dat_reg(s, COND_EQ, ARITH_CMP,
1090 0, 1, addr_reg2, SHIFT_IMM_LSL(0));
1091 # endif
1092 tcg_out_ld32_12(s, COND_EQ, 1, 0,
1093 offsetof(CPUState, tlb_table[0][0].addend));
1094
1095 switch (opc) {
1096 case 0:
1097 tcg_out_st8_r(s, COND_EQ, data_reg, addr_reg, 1);
1098 break;
1099 case 0 | 4:
1100 tcg_out_st8s_r(s, COND_EQ, data_reg, addr_reg, 1);
1101 break;
1102 case 1:
1103 tcg_out_st16u_r(s, COND_EQ, data_reg, addr_reg, 1);
1104 break;
1105 case 1 | 4:
1106 tcg_out_st16s_r(s, COND_EQ, data_reg, addr_reg, 1);
1107 break;
1108 case 2:
1109 default:
1110 tcg_out_st32_r(s, COND_EQ, data_reg, addr_reg, 1);
1111 break;
1112 case 3:
1113 tcg_out_st32_rwb(s, COND_EQ, data_reg, 1, addr_reg);
1114 tcg_out_st32_12(s, COND_EQ, data_reg2, 1, 4);
1115 break;
1116 }
1117
1118 label_ptr = (void *) s->code_ptr;
1119 tcg_out_b(s, COND_EQ, 8);
1120
1121 /* TODO: move this code to where the constants pool will be */
1122 if (addr_reg)
1123 tcg_out_dat_reg(s, cond, ARITH_MOV,
1124 0, 0, addr_reg, SHIFT_IMM_LSL(0));
1125 # if TARGET_LONG_BITS == 32
1126 switch (opc) {
1127 case 0:
1128 tcg_out_dat_imm(s, cond, ARITH_AND, 1, data_reg, 0xff);
1129 tcg_out_dat_imm(s, cond, ARITH_MOV, 2, 0, mem_index);
1130 break;
1131 case 1:
1132 tcg_out_dat_reg(s, cond, ARITH_MOV,
1133 1, 0, data_reg, SHIFT_IMM_LSL(16));
1134 tcg_out_dat_reg(s, cond, ARITH_MOV,
1135 1, 0, 1, SHIFT_IMM_LSR(16));
1136 tcg_out_dat_imm(s, cond, ARITH_MOV, 2, 0, mem_index);
1137 break;
1138 case 2:
1139 if (data_reg != 1)
1140 tcg_out_dat_reg(s, cond, ARITH_MOV,
1141 1, 0, data_reg, SHIFT_IMM_LSL(0));
1142 tcg_out_dat_imm(s, cond, ARITH_MOV, 2, 0, mem_index);
1143 break;
1144 case 3:
1145 if (data_reg != 1)
1146 tcg_out_dat_reg(s, cond, ARITH_MOV,
1147 1, 0, data_reg, SHIFT_IMM_LSL(0));
1148 if (data_reg2 != 2)
1149 tcg_out_dat_reg(s, cond, ARITH_MOV,
1150 2, 0, data_reg2, SHIFT_IMM_LSL(0));
1151 tcg_out_dat_imm(s, cond, ARITH_MOV, 3, 0, mem_index);
1152 break;
1153 }
1154 # else
1155 if (addr_reg2 != 1)
1156 tcg_out_dat_reg(s, cond, ARITH_MOV,
1157 1, 0, addr_reg2, SHIFT_IMM_LSL(0));
1158 switch (opc) {
1159 case 0:
1160 tcg_out_dat_imm(s, cond, ARITH_AND, 2, data_reg, 0xff);
1161 tcg_out_dat_imm(s, cond, ARITH_MOV, 3, 0, mem_index);
1162 break;
1163 case 1:
1164 tcg_out_dat_reg(s, cond, ARITH_MOV,
1165 2, 0, data_reg, SHIFT_IMM_LSL(16));
1166 tcg_out_dat_reg(s, cond, ARITH_MOV,
1167 2, 0, 2, SHIFT_IMM_LSR(16));
1168 tcg_out_dat_imm(s, cond, ARITH_MOV, 3, 0, mem_index);
1169 break;
1170 case 2:
1171 if (data_reg != 2)
1172 tcg_out_dat_reg(s, cond, ARITH_MOV,
1173 2, 0, data_reg, SHIFT_IMM_LSL(0));
1174 tcg_out_dat_imm(s, cond, ARITH_MOV, 3, 0, mem_index);
1175 break;
1176 case 3:
1177 tcg_out_dat_imm(s, cond, ARITH_MOV, 8, 0, mem_index);
1178 tcg_out32(s, (cond << 28) | 0x052d8010); /* str r8, [sp, #-0x10]! */
1179 if (data_reg != 2)
1180 tcg_out_dat_reg(s, cond, ARITH_MOV,
1181 2, 0, data_reg, SHIFT_IMM_LSL(0));
1182 if (data_reg2 != 3)
1183 tcg_out_dat_reg(s, cond, ARITH_MOV,
1184 3, 0, data_reg2, SHIFT_IMM_LSL(0));
1185 break;
1186 }
1187 # endif
1188
1189 # ifdef SAVE_LR
1190 tcg_out_dat_reg(s, cond, ARITH_MOV, 8, 0, 14, SHIFT_IMM_LSL(0));
1191 # endif
1192
1193 tcg_out_bl(s, cond, (tcg_target_long) qemu_st_helpers[s_bits] -
1194 (tcg_target_long) s->code_ptr);
1195 # if TARGET_LONG_BITS == 64
1196 if (opc == 3)
1197 tcg_out_dat_imm(s, cond, ARITH_ADD, 13, 13, 0x10);
1198 # endif
1199
1200 # ifdef SAVE_LR
1201 tcg_out_dat_reg(s, cond, ARITH_MOV, 14, 0, 8, SHIFT_IMM_LSL(0));
1202 # endif
1203
1204 *label_ptr += ((void *) s->code_ptr - (void *) label_ptr - 8) >> 2;
1205 #else /* !CONFIG_SOFTMMU */
1206 if (GUEST_BASE) {
1207 uint32_t offset = GUEST_BASE;
1208 int i;
1209 int rot;
1210
1211 while (offset) {
1212 i = ctz32(offset) & ~1;
1213 rot = ((32 - i) << 7) & 0xf00;
1214
1215 tcg_out_dat_imm(s, COND_AL, ARITH_ADD, 8, addr_reg,
1216 ((offset >> i) & 0xff) | rot);
1217 addr_reg = 8;
1218 offset &= ~(0xff << i);
1219 }
1220 }
1221 switch (opc) {
1222 case 0:
1223 tcg_out_st8_12(s, COND_AL, data_reg, addr_reg, 0);
1224 break;
1225 case 0 | 4:
1226 tcg_out_st8s_8(s, COND_AL, data_reg, addr_reg, 0);
1227 break;
1228 case 1:
1229 tcg_out_st16u_8(s, COND_AL, data_reg, addr_reg, 0);
1230 break;
1231 case 1 | 4:
1232 tcg_out_st16s_8(s, COND_AL, data_reg, addr_reg, 0);
1233 break;
1234 case 2:
1235 default:
1236 tcg_out_st32_12(s, COND_AL, data_reg, addr_reg, 0);
1237 break;
1238 case 3:
1239 /* TODO: use block store -
1240 * check that data_reg2 > data_reg or the other way */
1241 tcg_out_st32_12(s, COND_AL, data_reg, addr_reg, 0);
1242 tcg_out_st32_12(s, COND_AL, data_reg2, addr_reg, 4);
1243 break;
1244 }
1245 #endif
1246 }
1247
1248 static uint8_t *tb_ret_addr;
1249
1250 static inline void tcg_out_op(TCGContext *s, TCGOpcode opc,
1251 const TCGArg *args, const int *const_args)
1252 {
1253 int c;
1254
1255 switch (opc) {
1256 case INDEX_op_exit_tb:
1257 #ifdef SAVE_LR
1258 if (args[0] >> 8)
1259 tcg_out_ld32_12(s, COND_AL, TCG_REG_R0, 15, 0);
1260 else
1261 tcg_out_dat_imm(s, COND_AL, ARITH_MOV, TCG_REG_R0, 0, args[0]);
1262 tcg_out_dat_reg(s, COND_AL, ARITH_MOV, 15, 0, 14, SHIFT_IMM_LSL(0));
1263 if (args[0] >> 8)
1264 tcg_out32(s, args[0]);
1265 #else
1266 {
1267 uint8_t *ld_ptr = s->code_ptr;
1268 if (args[0] >> 8)
1269 tcg_out_ld32_12(s, COND_AL, 0, 15, 0);
1270 else
1271 tcg_out_dat_imm(s, COND_AL, ARITH_MOV, 0, 0, args[0]);
1272 tcg_out_goto(s, COND_AL, (tcg_target_ulong) tb_ret_addr);
1273 if (args[0] >> 8) {
1274 *ld_ptr = (uint8_t) (s->code_ptr - ld_ptr) - 8;
1275 tcg_out32(s, args[0]);
1276 }
1277 }
1278 #endif
1279 break;
1280 case INDEX_op_goto_tb:
1281 if (s->tb_jmp_offset) {
1282 /* Direct jump method */
1283 #if defined(USE_DIRECT_JUMP)
1284 s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf;
1285 tcg_out_b(s, COND_AL, 8);
1286 #else
1287 tcg_out_ld32_12(s, COND_AL, 15, 15, -4);
1288 s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf;
1289 tcg_out32(s, 0);
1290 #endif
1291 } else {
1292 /* Indirect jump method */
1293 #if 1
1294 c = (int) (s->tb_next + args[0]) - ((int) s->code_ptr + 8);
1295 if (c > 0xfff || c < -0xfff) {
1296 tcg_out_movi32(s, COND_AL, TCG_REG_R0,
1297 (tcg_target_long) (s->tb_next + args[0]));
1298 tcg_out_ld32_12(s, COND_AL, 15, TCG_REG_R0, 0);
1299 } else
1300 tcg_out_ld32_12(s, COND_AL, 15, 15, c);
1301 #else
1302 tcg_out_ld32_12(s, COND_AL, TCG_REG_R0, 15, 0);
1303 tcg_out_ld32_12(s, COND_AL, 15, TCG_REG_R0, 0);
1304 tcg_out32(s, (tcg_target_long) (s->tb_next + args[0]));
1305 #endif
1306 }
1307 s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf;
1308 break;
1309 case INDEX_op_call:
1310 if (const_args[0])
1311 tcg_out_call(s, COND_AL, args[0]);
1312 else
1313 tcg_out_callr(s, COND_AL, args[0]);
1314 break;
1315 case INDEX_op_jmp:
1316 if (const_args[0])
1317 tcg_out_goto(s, COND_AL, args[0]);
1318 else
1319 tcg_out_bx(s, COND_AL, args[0]);
1320 break;
1321 case INDEX_op_br:
1322 tcg_out_goto_label(s, COND_AL, args[0]);
1323 break;
1324
1325 case INDEX_op_ld8u_i32:
1326 tcg_out_ld8u(s, COND_AL, args[0], args[1], args[2]);
1327 break;
1328 case INDEX_op_ld8s_i32:
1329 tcg_out_ld8s(s, COND_AL, args[0], args[1], args[2]);
1330 break;
1331 case INDEX_op_ld16u_i32:
1332 tcg_out_ld16u(s, COND_AL, args[0], args[1], args[2]);
1333 break;
1334 case INDEX_op_ld16s_i32:
1335 tcg_out_ld16s(s, COND_AL, args[0], args[1], args[2]);
1336 break;
1337 case INDEX_op_ld_i32:
1338 tcg_out_ld32u(s, COND_AL, args[0], args[1], args[2]);
1339 break;
1340 case INDEX_op_st8_i32:
1341 tcg_out_st8u(s, COND_AL, args[0], args[1], args[2]);
1342 break;
1343 case INDEX_op_st16_i32:
1344 tcg_out_st16u(s, COND_AL, args[0], args[1], args[2]);
1345 break;
1346 case INDEX_op_st_i32:
1347 tcg_out_st32(s, COND_AL, args[0], args[1], args[2]);
1348 break;
1349
1350 case INDEX_op_mov_i32:
1351 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1352 args[0], 0, args[1], SHIFT_IMM_LSL(0));
1353 break;
1354 case INDEX_op_movi_i32:
1355 tcg_out_movi32(s, COND_AL, args[0], args[1]);
1356 break;
1357 case INDEX_op_add_i32:
1358 c = ARITH_ADD;
1359 goto gen_arith;
1360 case INDEX_op_sub_i32:
1361 c = ARITH_SUB;
1362 goto gen_arith;
1363 case INDEX_op_and_i32:
1364 c = ARITH_AND;
1365 goto gen_arith;
1366 case INDEX_op_andc_i32:
1367 c = ARITH_BIC;
1368 goto gen_arith;
1369 case INDEX_op_or_i32:
1370 c = ARITH_ORR;
1371 goto gen_arith;
1372 case INDEX_op_xor_i32:
1373 c = ARITH_EOR;
1374 /* Fall through. */
1375 gen_arith:
1376 if (const_args[2]) {
1377 int rot;
1378 rot = encode_imm(args[2]);
1379 tcg_out_dat_imm(s, COND_AL, c,
1380 args[0], args[1], rotl(args[2], rot) | (rot << 7));
1381 } else
1382 tcg_out_dat_reg(s, COND_AL, c,
1383 args[0], args[1], args[2], SHIFT_IMM_LSL(0));
1384 break;
1385 case INDEX_op_add2_i32:
1386 tcg_out_dat_reg2(s, COND_AL, ARITH_ADD, ARITH_ADC,
1387 args[0], args[1], args[2], args[3],
1388 args[4], args[5], SHIFT_IMM_LSL(0));
1389 break;
1390 case INDEX_op_sub2_i32:
1391 tcg_out_dat_reg2(s, COND_AL, ARITH_SUB, ARITH_SBC,
1392 args[0], args[1], args[2], args[3],
1393 args[4], args[5], SHIFT_IMM_LSL(0));
1394 break;
1395 case INDEX_op_neg_i32:
1396 tcg_out_dat_imm(s, COND_AL, ARITH_RSB, args[0], args[1], 0);
1397 break;
1398 case INDEX_op_not_i32:
1399 tcg_out_dat_reg(s, COND_AL,
1400 ARITH_MVN, args[0], 0, args[1], SHIFT_IMM_LSL(0));
1401 break;
1402 case INDEX_op_mul_i32:
1403 tcg_out_mul32(s, COND_AL, args[0], args[1], args[2]);
1404 break;
1405 case INDEX_op_mulu2_i32:
1406 tcg_out_umull32(s, COND_AL, args[0], args[1], args[2], args[3]);
1407 break;
1408 /* XXX: Perhaps args[2] & 0x1f is wrong */
1409 case INDEX_op_shl_i32:
1410 c = const_args[2] ?
1411 SHIFT_IMM_LSL(args[2] & 0x1f) : SHIFT_REG_LSL(args[2]);
1412 goto gen_shift32;
1413 case INDEX_op_shr_i32:
1414 c = const_args[2] ? (args[2] & 0x1f) ? SHIFT_IMM_LSR(args[2] & 0x1f) :
1415 SHIFT_IMM_LSL(0) : SHIFT_REG_LSR(args[2]);
1416 goto gen_shift32;
1417 case INDEX_op_sar_i32:
1418 c = const_args[2] ? (args[2] & 0x1f) ? SHIFT_IMM_ASR(args[2] & 0x1f) :
1419 SHIFT_IMM_LSL(0) : SHIFT_REG_ASR(args[2]);
1420 /* Fall through. */
1421 gen_shift32:
1422 tcg_out_dat_reg(s, COND_AL, ARITH_MOV, args[0], 0, args[1], c);
1423 break;
1424
1425 case INDEX_op_brcond_i32:
1426 if (const_args[1]) {
1427 int rot;
1428 rot = encode_imm(args[1]);
1429 tcg_out_dat_imm(s, COND_AL, ARITH_CMP,
1430 0, args[0], rotl(args[1], rot) | (rot << 7));
1431 } else {
1432 tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0,
1433 args[0], args[1], SHIFT_IMM_LSL(0));
1434 }
1435 tcg_out_goto_label(s, tcg_cond_to_arm_cond[args[2]], args[3]);
1436 break;
1437 case INDEX_op_brcond2_i32:
1438 /* The resulting conditions are:
1439 * TCG_COND_EQ --> a0 == a2 && a1 == a3,
1440 * TCG_COND_NE --> (a0 != a2 && a1 == a3) || a1 != a3,
1441 * TCG_COND_LT(U) --> (a0 < a2 && a1 == a3) || a1 < a3,
1442 * TCG_COND_GE(U) --> (a0 >= a2 && a1 == a3) || (a1 >= a3 && a1 != a3),
1443 * TCG_COND_LE(U) --> (a0 <= a2 && a1 == a3) || (a1 <= a3 && a1 != a3),
1444 * TCG_COND_GT(U) --> (a0 > a2 && a1 == a3) || a1 > a3,
1445 */
1446 tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0,
1447 args[1], args[3], SHIFT_IMM_LSL(0));
1448 tcg_out_dat_reg(s, COND_EQ, ARITH_CMP, 0,
1449 args[0], args[2], SHIFT_IMM_LSL(0));
1450 tcg_out_goto_label(s, tcg_cond_to_arm_cond[args[4]], args[5]);
1451 break;
1452 case INDEX_op_setcond_i32:
1453 if (const_args[2]) {
1454 int rot;
1455 rot = encode_imm(args[2]);
1456 tcg_out_dat_imm(s, COND_AL, ARITH_CMP,
1457 0, args[1], rotl(args[2], rot) | (rot << 7));
1458 } else {
1459 tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0,
1460 args[1], args[2], SHIFT_IMM_LSL(0));
1461 }
1462 tcg_out_dat_imm(s, tcg_cond_to_arm_cond[args[3]],
1463 ARITH_MOV, args[0], 0, 1);
1464 tcg_out_dat_imm(s, tcg_cond_to_arm_cond[tcg_invert_cond(args[3])],
1465 ARITH_MOV, args[0], 0, 0);
1466 break;
1467 case INDEX_op_setcond2_i32:
1468 /* See brcond2_i32 comment */
1469 tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0,
1470 args[2], args[4], SHIFT_IMM_LSL(0));
1471 tcg_out_dat_reg(s, COND_EQ, ARITH_CMP, 0,
1472 args[1], args[3], SHIFT_IMM_LSL(0));
1473 tcg_out_dat_imm(s, tcg_cond_to_arm_cond[args[5]],
1474 ARITH_MOV, args[0], 0, 1);
1475 tcg_out_dat_imm(s, tcg_cond_to_arm_cond[tcg_invert_cond(args[5])],
1476 ARITH_MOV, args[0], 0, 0);
1477 break;
1478
1479 case INDEX_op_qemu_ld8u:
1480 tcg_out_qemu_ld(s, COND_AL, args, 0);
1481 break;
1482 case INDEX_op_qemu_ld8s:
1483 tcg_out_qemu_ld(s, COND_AL, args, 0 | 4);
1484 break;
1485 case INDEX_op_qemu_ld16u:
1486 tcg_out_qemu_ld(s, COND_AL, args, 1);
1487 break;
1488 case INDEX_op_qemu_ld16s:
1489 tcg_out_qemu_ld(s, COND_AL, args, 1 | 4);
1490 break;
1491 case INDEX_op_qemu_ld32:
1492 tcg_out_qemu_ld(s, COND_AL, args, 2);
1493 break;
1494 case INDEX_op_qemu_ld64:
1495 tcg_out_qemu_ld(s, COND_AL, args, 3);
1496 break;
1497
1498 case INDEX_op_qemu_st8:
1499 tcg_out_qemu_st(s, COND_AL, args, 0);
1500 break;
1501 case INDEX_op_qemu_st16:
1502 tcg_out_qemu_st(s, COND_AL, args, 1);
1503 break;
1504 case INDEX_op_qemu_st32:
1505 tcg_out_qemu_st(s, COND_AL, args, 2);
1506 break;
1507 case INDEX_op_qemu_st64:
1508 tcg_out_qemu_st(s, COND_AL, args, 3);
1509 break;
1510
1511 case INDEX_op_ext8s_i32:
1512 #ifdef __ARM_ARCH_7A__
1513 /* sxtb */
1514 tcg_out32(s, 0xe6af0070 | (args[0] << 12) | args[1]);
1515 #else
1516 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1517 args[0], 0, args[1], SHIFT_IMM_LSL(24));
1518 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1519 args[0], 0, args[0], SHIFT_IMM_ASR(24));
1520 #endif
1521 break;
1522 case INDEX_op_ext16s_i32:
1523 #ifdef __ARM_ARCH_7A__
1524 /* sxth */
1525 tcg_out32(s, 0xe6bf0070 | (args[0] << 12) | args[1]);
1526 #else
1527 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1528 args[0], 0, args[1], SHIFT_IMM_LSL(16));
1529 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1530 args[0], 0, args[0], SHIFT_IMM_ASR(16));
1531 #endif
1532 break;
1533
1534 default:
1535 tcg_abort();
1536 }
1537 }
1538
1539 static const TCGTargetOpDef arm_op_defs[] = {
1540 { INDEX_op_exit_tb, { } },
1541 { INDEX_op_goto_tb, { } },
1542 { INDEX_op_call, { "ri" } },
1543 { INDEX_op_jmp, { "ri" } },
1544 { INDEX_op_br, { } },
1545
1546 { INDEX_op_mov_i32, { "r", "r" } },
1547 { INDEX_op_movi_i32, { "r" } },
1548
1549 { INDEX_op_ld8u_i32, { "r", "r" } },
1550 { INDEX_op_ld8s_i32, { "r", "r" } },
1551 { INDEX_op_ld16u_i32, { "r", "r" } },
1552 { INDEX_op_ld16s_i32, { "r", "r" } },
1553 { INDEX_op_ld_i32, { "r", "r" } },
1554 { INDEX_op_st8_i32, { "r", "r" } },
1555 { INDEX_op_st16_i32, { "r", "r" } },
1556 { INDEX_op_st_i32, { "r", "r" } },
1557
1558 /* TODO: "r", "r", "ri" */
1559 { INDEX_op_add_i32, { "r", "r", "rI" } },
1560 { INDEX_op_sub_i32, { "r", "r", "rI" } },
1561 { INDEX_op_mul_i32, { "r", "r", "r" } },
1562 { INDEX_op_mulu2_i32, { "r", "r", "r", "r" } },
1563 { INDEX_op_and_i32, { "r", "r", "rI" } },
1564 { INDEX_op_andc_i32, { "r", "r", "rI" } },
1565 { INDEX_op_or_i32, { "r", "r", "rI" } },
1566 { INDEX_op_xor_i32, { "r", "r", "rI" } },
1567 { INDEX_op_neg_i32, { "r", "r" } },
1568 { INDEX_op_not_i32, { "r", "r" } },
1569
1570 { INDEX_op_shl_i32, { "r", "r", "ri" } },
1571 { INDEX_op_shr_i32, { "r", "r", "ri" } },
1572 { INDEX_op_sar_i32, { "r", "r", "ri" } },
1573
1574 { INDEX_op_brcond_i32, { "r", "rI" } },
1575 { INDEX_op_setcond_i32, { "r", "r", "rI" } },
1576
1577 /* TODO: "r", "r", "r", "r", "ri", "ri" */
1578 { INDEX_op_add2_i32, { "r", "r", "r", "r", "r", "r" } },
1579 { INDEX_op_sub2_i32, { "r", "r", "r", "r", "r", "r" } },
1580 { INDEX_op_brcond2_i32, { "r", "r", "r", "r" } },
1581 { INDEX_op_setcond2_i32, { "r", "r", "r", "r", "r" } },
1582
1583 #if TARGET_LONG_BITS == 32
1584 { INDEX_op_qemu_ld8u, { "r", "x" } },
1585 { INDEX_op_qemu_ld8s, { "r", "x" } },
1586 { INDEX_op_qemu_ld16u, { "r", "x" } },
1587 { INDEX_op_qemu_ld16s, { "r", "x" } },
1588 { INDEX_op_qemu_ld32, { "r", "x" } },
1589 { INDEX_op_qemu_ld64, { "d", "r", "x" } },
1590
1591 { INDEX_op_qemu_st8, { "x", "x" } },
1592 { INDEX_op_qemu_st16, { "x", "x" } },
1593 { INDEX_op_qemu_st32, { "x", "x" } },
1594 { INDEX_op_qemu_st64, { "x", "D", "x" } },
1595 #else
1596 { INDEX_op_qemu_ld8u, { "r", "x", "X" } },
1597 { INDEX_op_qemu_ld8s, { "r", "x", "X" } },
1598 { INDEX_op_qemu_ld16u, { "r", "x", "X" } },
1599 { INDEX_op_qemu_ld16s, { "r", "x", "X" } },
1600 { INDEX_op_qemu_ld32, { "r", "x", "X" } },
1601 { INDEX_op_qemu_ld64, { "d", "r", "x", "X" } },
1602
1603 { INDEX_op_qemu_st8, { "x", "x", "X" } },
1604 { INDEX_op_qemu_st16, { "x", "x", "X" } },
1605 { INDEX_op_qemu_st32, { "x", "x", "X" } },
1606 { INDEX_op_qemu_st64, { "x", "D", "x", "X" } },
1607 #endif
1608
1609 { INDEX_op_ext8s_i32, { "r", "r" } },
1610 { INDEX_op_ext16s_i32, { "r", "r" } },
1611
1612 { -1 },
1613 };
1614
1615 void tcg_target_init(TCGContext *s)
1616 {
1617 #if !defined(CONFIG_USER_ONLY)
1618 /* fail safe */
1619 if ((1 << CPU_TLB_ENTRY_BITS) != sizeof(CPUTLBEntry))
1620 tcg_abort();
1621 #endif
1622
1623 tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0,
1624 ((2 << TCG_REG_R14) - 1) & ~(1 << TCG_REG_R8));
1625 tcg_regset_set32(tcg_target_call_clobber_regs, 0,
1626 ((2 << TCG_REG_R3) - 1) |
1627 (1 << TCG_REG_R12) | (1 << TCG_REG_R14));
1628
1629 tcg_regset_clear(s->reserved_regs);
1630 #ifdef SAVE_LR
1631 tcg_regset_set_reg(s->reserved_regs, TCG_REG_R14);
1632 #endif
1633 tcg_regset_set_reg(s->reserved_regs, TCG_REG_CALL_STACK);
1634 tcg_regset_set_reg(s->reserved_regs, TCG_REG_R8);
1635
1636 tcg_add_target_add_op_defs(arm_op_defs);
1637 }
1638
1639 static inline void tcg_out_ld(TCGContext *s, TCGType type, int arg,
1640 int arg1, tcg_target_long arg2)
1641 {
1642 tcg_out_ld32u(s, COND_AL, arg, arg1, arg2);
1643 }
1644
1645 static inline void tcg_out_st(TCGContext *s, TCGType type, int arg,
1646 int arg1, tcg_target_long arg2)
1647 {
1648 tcg_out_st32(s, COND_AL, arg, arg1, arg2);
1649 }
1650
1651 static void tcg_out_addi(TCGContext *s, int reg, tcg_target_long val)
1652 {
1653 if (val > 0)
1654 if (val < 0x100)
1655 tcg_out_dat_imm(s, COND_AL, ARITH_ADD, reg, reg, val);
1656 else
1657 tcg_abort();
1658 else if (val < 0) {
1659 if (val > -0x100)
1660 tcg_out_dat_imm(s, COND_AL, ARITH_SUB, reg, reg, -val);
1661 else
1662 tcg_abort();
1663 }
1664 }
1665
1666 static inline void tcg_out_mov(TCGContext *s, int ret, int arg)
1667 {
1668 tcg_out_dat_reg(s, COND_AL, ARITH_MOV, ret, 0, arg, SHIFT_IMM_LSL(0));
1669 }
1670
1671 static inline void tcg_out_movi(TCGContext *s, TCGType type,
1672 int ret, tcg_target_long arg)
1673 {
1674 tcg_out_movi32(s, COND_AL, ret, arg);
1675 }
1676
1677 void tcg_target_qemu_prologue(TCGContext *s)
1678 {
1679 /* There is no need to save r7, it is used to store the address
1680 of the env structure and is not modified by GCC. */
1681
1682 /* stmdb sp!, { r4 - r6, r8 - r11, lr } */
1683 tcg_out32(s, (COND_AL << 28) | 0x092d4f70);
1684
1685 tcg_out_bx(s, COND_AL, TCG_REG_R0);
1686 tb_ret_addr = s->code_ptr;
1687
1688 /* ldmia sp!, { r4 - r6, r8 - r11, pc } */
1689 tcg_out32(s, (COND_AL << 28) | 0x08bd8f70);
1690 }
AR7 emulation for QEMU