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Implement multi-level page tables.
[qemu/aliguori-queue.git] / tcg / arm / tcg-target.c
blobdabc0f5bca19599499b0f7a1d633e74760792101
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 } else {
857 tcg_out_dat_imm(s, cond, ARITH_ADD, 13, 13, 4);
858 }
859 /* ldr r1, [sp], #4 */
860 if (rem_reg != 1 && div_reg != 1) {
861 tcg_out32(s, (cond << 28) | 0x04bd1004);
862 } else {
863 tcg_out_dat_imm(s, cond, ARITH_ADD, 13, 13, 4);
864 }
865 /* ldr r2, [sp], #4 */
866 if (rem_reg != 2 && div_reg != 2) {
867 tcg_out32(s, (cond << 28) | 0x04bd2004);
868 } else {
869 tcg_out_dat_imm(s, cond, ARITH_ADD, 13, 13, 4);
870 }
871 /* ldr r3, [sp], #4 */
872 if (rem_reg != 3 && div_reg != 3) {
873 tcg_out32(s, (cond << 28) | 0x04bd3004);
874 } else {
875 tcg_out_dat_imm(s, cond, ARITH_ADD, 13, 13, 4);
876 }
877 /* ldr ip, [sp], #4 */
878 if (rem_reg != 12 && div_reg != 12) {
879 tcg_out32(s, (cond << 28) | 0x04bdc004);
880 } else {
881 tcg_out_dat_imm(s, cond, ARITH_ADD, 13, 13, 4);
882 }
883 /* ldr lr, [sp], #4 */
884 if (rem_reg != 14 && div_reg != 14) {
885 tcg_out32(s, (cond << 28) | 0x04bde004);
886 } else {
887 tcg_out_dat_imm(s, cond, ARITH_ADD, 13, 13, 4);
888 }
889 }
890
891 #ifdef CONFIG_SOFTMMU
892
893 #include "../../softmmu_defs.h"
894
895 static void *qemu_ld_helpers[4] = {
896 __ldb_mmu,
897 __ldw_mmu,
898 __ldl_mmu,
899 __ldq_mmu,
900 };
901
902 static void *qemu_st_helpers[4] = {
903 __stb_mmu,
904 __stw_mmu,
905 __stl_mmu,
906 __stq_mmu,
907 };
908 #endif
909
910 #define TLB_SHIFT (CPU_TLB_ENTRY_BITS + CPU_TLB_BITS)
911
912 static inline void tcg_out_qemu_ld(TCGContext *s, int cond,
913 const TCGArg *args, int opc)
914 {
915 int addr_reg, data_reg, data_reg2;
916 #ifdef CONFIG_SOFTMMU
917 int mem_index, s_bits;
918 # if TARGET_LONG_BITS == 64
919 int addr_reg2;
920 # endif
921 uint32_t *label_ptr;
922 #endif
923
924 data_reg = *args++;
925 if (opc == 3)
926 data_reg2 = *args++;
927 else
928 data_reg2 = 0; /* suppress warning */
929 addr_reg = *args++;
930 #ifdef CONFIG_SOFTMMU
931 # if TARGET_LONG_BITS == 64
932 addr_reg2 = *args++;
933 # endif
934 mem_index = *args;
935 s_bits = opc & 3;
936
937 /* Should generate something like the following:
938 * shr r8, addr_reg, #TARGET_PAGE_BITS
939 * and r0, r8, #(CPU_TLB_SIZE - 1) @ Assumption: CPU_TLB_BITS <= 8
940 * add r0, env, r0 lsl #CPU_TLB_ENTRY_BITS
941 */
942 # if CPU_TLB_BITS > 8
943 # error
944 # endif
945 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
946 8, 0, addr_reg, SHIFT_IMM_LSR(TARGET_PAGE_BITS));
947 tcg_out_dat_imm(s, COND_AL, ARITH_AND,
948 0, 8, CPU_TLB_SIZE - 1);
949 tcg_out_dat_reg(s, COND_AL, ARITH_ADD,
950 0, TCG_AREG0, 0, SHIFT_IMM_LSL(CPU_TLB_ENTRY_BITS));
951 /* In the
952 * ldr r1 [r0, #(offsetof(CPUState, tlb_table[mem_index][0].addr_read))]
953 * below, the offset is likely to exceed 12 bits if mem_index != 0 and
954 * not exceed otherwise, so use an
955 * add r0, r0, #(mem_index * sizeof *CPUState.tlb_table)
956 * before.
957 */
958 if (mem_index)
959 tcg_out_dat_imm(s, COND_AL, ARITH_ADD, 0, 0,
960 (mem_index << (TLB_SHIFT & 1)) |
961 ((16 - (TLB_SHIFT >> 1)) << 8));
962 tcg_out_ld32_12(s, COND_AL, 1, 0,
963 offsetof(CPUState, tlb_table[0][0].addr_read));
964 tcg_out_dat_reg(s, COND_AL, ARITH_CMP,
965 0, 1, 8, SHIFT_IMM_LSL(TARGET_PAGE_BITS));
966 /* Check alignment. */
967 if (s_bits)
968 tcg_out_dat_imm(s, COND_EQ, ARITH_TST,
969 0, addr_reg, (1 << s_bits) - 1);
970 # if TARGET_LONG_BITS == 64
971 /* XXX: possibly we could use a block data load or writeback in
972 * the first access. */
973 tcg_out_ld32_12(s, COND_EQ, 1, 0,
974 offsetof(CPUState, tlb_table[0][0].addr_read) + 4);
975 tcg_out_dat_reg(s, COND_EQ, ARITH_CMP,
976 0, 1, addr_reg2, SHIFT_IMM_LSL(0));
977 # endif
978 tcg_out_ld32_12(s, COND_EQ, 1, 0,
979 offsetof(CPUState, tlb_table[0][0].addend));
980
981 switch (opc) {
982 case 0:
983 tcg_out_ld8_r(s, COND_EQ, data_reg, addr_reg, 1);
984 break;
985 case 0 | 4:
986 tcg_out_ld8s_r(s, COND_EQ, data_reg, addr_reg, 1);
987 break;
988 case 1:
989 tcg_out_ld16u_r(s, COND_EQ, data_reg, addr_reg, 1);
990 break;
991 case 1 | 4:
992 tcg_out_ld16s_r(s, COND_EQ, data_reg, addr_reg, 1);
993 break;
994 case 2:
995 default:
996 tcg_out_ld32_r(s, COND_EQ, data_reg, addr_reg, 1);
997 break;
998 case 3:
999 tcg_out_ld32_rwb(s, COND_EQ, data_reg, 1, addr_reg);
1000 tcg_out_ld32_12(s, COND_EQ, data_reg2, 1, 4);
1001 break;
1002 }
1003
1004 label_ptr = (void *) s->code_ptr;
1005 tcg_out_b(s, COND_EQ, 8);
1006
1007 # ifdef SAVE_LR
1008 tcg_out_dat_reg(s, cond, ARITH_MOV, 8, 0, 14, SHIFT_IMM_LSL(0));
1009 # endif
1010
1011 /* TODO: move this code to where the constants pool will be */
1012 if (addr_reg)
1013 tcg_out_dat_reg(s, cond, ARITH_MOV,
1014 0, 0, addr_reg, SHIFT_IMM_LSL(0));
1015 # if TARGET_LONG_BITS == 32
1016 tcg_out_dat_imm(s, cond, ARITH_MOV, 1, 0, mem_index);
1017 # else
1018 if (addr_reg2 != 1)
1019 tcg_out_dat_reg(s, cond, ARITH_MOV,
1020 1, 0, addr_reg2, SHIFT_IMM_LSL(0));
1021 tcg_out_dat_imm(s, cond, ARITH_MOV, 2, 0, mem_index);
1022 # endif
1023 tcg_out_bl(s, cond, (tcg_target_long) qemu_ld_helpers[s_bits] -
1024 (tcg_target_long) s->code_ptr);
1025
1026 switch (opc) {
1027 case 0 | 4:
1028 tcg_out_dat_reg(s, cond, ARITH_MOV,
1029 0, 0, 0, SHIFT_IMM_LSL(24));
1030 tcg_out_dat_reg(s, cond, ARITH_MOV,
1031 data_reg, 0, 0, SHIFT_IMM_ASR(24));
1032 break;
1033 case 1 | 4:
1034 tcg_out_dat_reg(s, cond, ARITH_MOV,
1035 0, 0, 0, SHIFT_IMM_LSL(16));
1036 tcg_out_dat_reg(s, cond, ARITH_MOV,
1037 data_reg, 0, 0, SHIFT_IMM_ASR(16));
1038 break;
1039 case 0:
1040 case 1:
1041 case 2:
1042 default:
1043 if (data_reg)
1044 tcg_out_dat_reg(s, cond, ARITH_MOV,
1045 data_reg, 0, 0, SHIFT_IMM_LSL(0));
1046 break;
1047 case 3:
1048 if (data_reg != 0)
1049 tcg_out_dat_reg(s, cond, ARITH_MOV,
1050 data_reg, 0, 0, SHIFT_IMM_LSL(0));
1051 if (data_reg2 != 1)
1052 tcg_out_dat_reg(s, cond, ARITH_MOV,
1053 data_reg2, 0, 1, SHIFT_IMM_LSL(0));
1054 break;
1055 }
1056
1057 # ifdef SAVE_LR
1058 tcg_out_dat_reg(s, cond, ARITH_MOV, 14, 0, 8, SHIFT_IMM_LSL(0));
1059 # endif
1060
1061 *label_ptr += ((void *) s->code_ptr - (void *) label_ptr - 8) >> 2;
1062 #else /* !CONFIG_SOFTMMU */
1063 if (GUEST_BASE) {
1064 uint32_t offset = GUEST_BASE;
1065 int i;
1066 int rot;
1067
1068 while (offset) {
1069 i = ctz32(offset) & ~1;
1070 rot = ((32 - i) << 7) & 0xf00;
1071
1072 tcg_out_dat_imm(s, COND_AL, ARITH_ADD, 8, addr_reg,
1073 ((offset >> i) & 0xff) | rot);
1074 addr_reg = 8;
1075 offset &= ~(0xff << i);
1076 }
1077 }
1078 switch (opc) {
1079 case 0:
1080 tcg_out_ld8_12(s, COND_AL, data_reg, addr_reg, 0);
1081 break;
1082 case 0 | 4:
1083 tcg_out_ld8s_8(s, COND_AL, data_reg, addr_reg, 0);
1084 break;
1085 case 1:
1086 tcg_out_ld16u_8(s, COND_AL, data_reg, addr_reg, 0);
1087 break;
1088 case 1 | 4:
1089 tcg_out_ld16s_8(s, COND_AL, data_reg, addr_reg, 0);
1090 break;
1091 case 2:
1092 default:
1093 tcg_out_ld32_12(s, COND_AL, data_reg, addr_reg, 0);
1094 break;
1095 case 3:
1096 /* TODO: use block load -
1097 * check that data_reg2 > data_reg or the other way */
1098 if (data_reg == addr_reg) {
1099 tcg_out_ld32_12(s, COND_AL, data_reg2, addr_reg, 4);
1100 tcg_out_ld32_12(s, COND_AL, data_reg, addr_reg, 0);
1101 } else {
1102 tcg_out_ld32_12(s, COND_AL, data_reg, addr_reg, 0);
1103 tcg_out_ld32_12(s, COND_AL, data_reg2, addr_reg, 4);
1104 }
1105 break;
1106 }
1107 #endif
1108 }
1109
1110 static inline void tcg_out_qemu_st(TCGContext *s, int cond,
1111 const TCGArg *args, int opc)
1112 {
1113 int addr_reg, data_reg, data_reg2;
1114 #ifdef CONFIG_SOFTMMU
1115 int mem_index, s_bits;
1116 # if TARGET_LONG_BITS == 64
1117 int addr_reg2;
1118 # endif
1119 uint32_t *label_ptr;
1120 #endif
1121
1122 data_reg = *args++;
1123 if (opc == 3)
1124 data_reg2 = *args++;
1125 else
1126 data_reg2 = 0; /* suppress warning */
1127 addr_reg = *args++;
1128 #ifdef CONFIG_SOFTMMU
1129 # if TARGET_LONG_BITS == 64
1130 addr_reg2 = *args++;
1131 # endif
1132 mem_index = *args;
1133 s_bits = opc & 3;
1134
1135 /* Should generate something like the following:
1136 * shr r8, addr_reg, #TARGET_PAGE_BITS
1137 * and r0, r8, #(CPU_TLB_SIZE - 1) @ Assumption: CPU_TLB_BITS <= 8
1138 * add r0, env, r0 lsl #CPU_TLB_ENTRY_BITS
1139 */
1140 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1141 8, 0, addr_reg, SHIFT_IMM_LSR(TARGET_PAGE_BITS));
1142 tcg_out_dat_imm(s, COND_AL, ARITH_AND,
1143 0, 8, CPU_TLB_SIZE - 1);
1144 tcg_out_dat_reg(s, COND_AL, ARITH_ADD,
1145 0, TCG_AREG0, 0, SHIFT_IMM_LSL(CPU_TLB_ENTRY_BITS));
1146 /* In the
1147 * ldr r1 [r0, #(offsetof(CPUState, tlb_table[mem_index][0].addr_write))]
1148 * below, the offset is likely to exceed 12 bits if mem_index != 0 and
1149 * not exceed otherwise, so use an
1150 * add r0, r0, #(mem_index * sizeof *CPUState.tlb_table)
1151 * before.
1152 */
1153 if (mem_index)
1154 tcg_out_dat_imm(s, COND_AL, ARITH_ADD, 0, 0,
1155 (mem_index << (TLB_SHIFT & 1)) |
1156 ((16 - (TLB_SHIFT >> 1)) << 8));
1157 tcg_out_ld32_12(s, COND_AL, 1, 0,
1158 offsetof(CPUState, tlb_table[0][0].addr_write));
1159 tcg_out_dat_reg(s, COND_AL, ARITH_CMP,
1160 0, 1, 8, SHIFT_IMM_LSL(TARGET_PAGE_BITS));
1161 /* Check alignment. */
1162 if (s_bits)
1163 tcg_out_dat_imm(s, COND_EQ, ARITH_TST,
1164 0, addr_reg, (1 << s_bits) - 1);
1165 # if TARGET_LONG_BITS == 64
1166 /* XXX: possibly we could use a block data load or writeback in
1167 * the first access. */
1168 tcg_out_ld32_12(s, COND_EQ, 1, 0,
1169 offsetof(CPUState, tlb_table[0][0].addr_write)
1170 + 4);
1171 tcg_out_dat_reg(s, COND_EQ, ARITH_CMP,
1172 0, 1, addr_reg2, SHIFT_IMM_LSL(0));
1173 # endif
1174 tcg_out_ld32_12(s, COND_EQ, 1, 0,
1175 offsetof(CPUState, tlb_table[0][0].addend));
1176
1177 switch (opc) {
1178 case 0:
1179 tcg_out_st8_r(s, COND_EQ, data_reg, addr_reg, 1);
1180 break;
1181 case 0 | 4:
1182 tcg_out_st8s_r(s, COND_EQ, data_reg, addr_reg, 1);
1183 break;
1184 case 1:
1185 tcg_out_st16u_r(s, COND_EQ, data_reg, addr_reg, 1);
1186 break;
1187 case 1 | 4:
1188 tcg_out_st16s_r(s, COND_EQ, data_reg, addr_reg, 1);
1189 break;
1190 case 2:
1191 default:
1192 tcg_out_st32_r(s, COND_EQ, data_reg, addr_reg, 1);
1193 break;
1194 case 3:
1195 tcg_out_st32_rwb(s, COND_EQ, data_reg, 1, addr_reg);
1196 tcg_out_st32_12(s, COND_EQ, data_reg2, 1, 4);
1197 break;
1198 }
1199
1200 label_ptr = (void *) s->code_ptr;
1201 tcg_out_b(s, COND_EQ, 8);
1202
1203 /* TODO: move this code to where the constants pool will be */
1204 if (addr_reg)
1205 tcg_out_dat_reg(s, cond, ARITH_MOV,
1206 0, 0, addr_reg, SHIFT_IMM_LSL(0));
1207 # if TARGET_LONG_BITS == 32
1208 switch (opc) {
1209 case 0:
1210 tcg_out_dat_imm(s, cond, ARITH_AND, 1, data_reg, 0xff);
1211 tcg_out_dat_imm(s, cond, ARITH_MOV, 2, 0, mem_index);
1212 break;
1213 case 1:
1214 tcg_out_dat_reg(s, cond, ARITH_MOV,
1215 1, 0, data_reg, SHIFT_IMM_LSL(16));
1216 tcg_out_dat_reg(s, cond, ARITH_MOV,
1217 1, 0, 1, SHIFT_IMM_LSR(16));
1218 tcg_out_dat_imm(s, cond, ARITH_MOV, 2, 0, mem_index);
1219 break;
1220 case 2:
1221 if (data_reg != 1)
1222 tcg_out_dat_reg(s, cond, ARITH_MOV,
1223 1, 0, data_reg, SHIFT_IMM_LSL(0));
1224 tcg_out_dat_imm(s, cond, ARITH_MOV, 2, 0, mem_index);
1225 break;
1226 case 3:
1227 if (data_reg != 1)
1228 tcg_out_dat_reg(s, cond, ARITH_MOV,
1229 1, 0, data_reg, SHIFT_IMM_LSL(0));
1230 if (data_reg2 != 2)
1231 tcg_out_dat_reg(s, cond, ARITH_MOV,
1232 2, 0, data_reg2, SHIFT_IMM_LSL(0));
1233 tcg_out_dat_imm(s, cond, ARITH_MOV, 3, 0, mem_index);
1234 break;
1235 }
1236 # else
1237 if (addr_reg2 != 1)
1238 tcg_out_dat_reg(s, cond, ARITH_MOV,
1239 1, 0, addr_reg2, SHIFT_IMM_LSL(0));
1240 switch (opc) {
1241 case 0:
1242 tcg_out_dat_imm(s, cond, ARITH_AND, 2, data_reg, 0xff);
1243 tcg_out_dat_imm(s, cond, ARITH_MOV, 3, 0, mem_index);
1244 break;
1245 case 1:
1246 tcg_out_dat_reg(s, cond, ARITH_MOV,
1247 2, 0, data_reg, SHIFT_IMM_LSL(16));
1248 tcg_out_dat_reg(s, cond, ARITH_MOV,
1249 2, 0, 2, SHIFT_IMM_LSR(16));
1250 tcg_out_dat_imm(s, cond, ARITH_MOV, 3, 0, mem_index);
1251 break;
1252 case 2:
1253 if (data_reg != 2)
1254 tcg_out_dat_reg(s, cond, ARITH_MOV,
1255 2, 0, data_reg, SHIFT_IMM_LSL(0));
1256 tcg_out_dat_imm(s, cond, ARITH_MOV, 3, 0, mem_index);
1257 break;
1258 case 3:
1259 tcg_out_dat_imm(s, cond, ARITH_MOV, 8, 0, mem_index);
1260 tcg_out32(s, (cond << 28) | 0x052d8010); /* str r8, [sp, #-0x10]! */
1261 if (data_reg != 2)
1262 tcg_out_dat_reg(s, cond, ARITH_MOV,
1263 2, 0, data_reg, SHIFT_IMM_LSL(0));
1264 if (data_reg2 != 3)
1265 tcg_out_dat_reg(s, cond, ARITH_MOV,
1266 3, 0, data_reg2, SHIFT_IMM_LSL(0));
1267 break;
1268 }
1269 # endif
1270
1271 # ifdef SAVE_LR
1272 tcg_out_dat_reg(s, cond, ARITH_MOV, 8, 0, 14, SHIFT_IMM_LSL(0));
1273 # endif
1274
1275 tcg_out_bl(s, cond, (tcg_target_long) qemu_st_helpers[s_bits] -
1276 (tcg_target_long) s->code_ptr);
1277 # if TARGET_LONG_BITS == 64
1278 if (opc == 3)
1279 tcg_out_dat_imm(s, cond, ARITH_ADD, 13, 13, 0x10);
1280 # endif
1281
1282 # ifdef SAVE_LR
1283 tcg_out_dat_reg(s, cond, ARITH_MOV, 14, 0, 8, SHIFT_IMM_LSL(0));
1284 # endif
1285
1286 *label_ptr += ((void *) s->code_ptr - (void *) label_ptr - 8) >> 2;
1287 #else /* !CONFIG_SOFTMMU */
1288 if (GUEST_BASE) {
1289 uint32_t offset = GUEST_BASE;
1290 int i;
1291 int rot;
1292
1293 while (offset) {
1294 i = ctz32(offset) & ~1;
1295 rot = ((32 - i) << 7) & 0xf00;
1296
1297 tcg_out_dat_imm(s, COND_AL, ARITH_ADD, 8, addr_reg,
1298 ((offset >> i) & 0xff) | rot);
1299 addr_reg = 8;
1300 offset &= ~(0xff << i);
1301 }
1302 }
1303 switch (opc) {
1304 case 0:
1305 tcg_out_st8_12(s, COND_AL, data_reg, addr_reg, 0);
1306 break;
1307 case 0 | 4:
1308 tcg_out_st8s_8(s, COND_AL, data_reg, addr_reg, 0);
1309 break;
1310 case 1:
1311 tcg_out_st16u_8(s, COND_AL, data_reg, addr_reg, 0);
1312 break;
1313 case 1 | 4:
1314 tcg_out_st16s_8(s, COND_AL, data_reg, addr_reg, 0);
1315 break;
1316 case 2:
1317 default:
1318 tcg_out_st32_12(s, COND_AL, data_reg, addr_reg, 0);
1319 break;
1320 case 3:
1321 /* TODO: use block store -
1322 * check that data_reg2 > data_reg or the other way */
1323 tcg_out_st32_12(s, COND_AL, data_reg, addr_reg, 0);
1324 tcg_out_st32_12(s, COND_AL, data_reg2, addr_reg, 4);
1325 break;
1326 }
1327 #endif
1328 }
1329
1330 static uint8_t *tb_ret_addr;
1331
1332 static inline void tcg_out_op(TCGContext *s, int opc,
1333 const TCGArg *args, const int *const_args)
1334 {
1335 int c;
1336
1337 switch (opc) {
1338 case INDEX_op_exit_tb:
1339 #ifdef SAVE_LR
1340 if (args[0] >> 8)
1341 tcg_out_ld32_12(s, COND_AL, TCG_REG_R0, 15, 0);
1342 else
1343 tcg_out_dat_imm(s, COND_AL, ARITH_MOV, TCG_REG_R0, 0, args[0]);
1344 tcg_out_dat_reg(s, COND_AL, ARITH_MOV, 15, 0, 14, SHIFT_IMM_LSL(0));
1345 if (args[0] >> 8)
1346 tcg_out32(s, args[0]);
1347 #else
1348 {
1349 uint8_t *ld_ptr = s->code_ptr;
1350 if (args[0] >> 8)
1351 tcg_out_ld32_12(s, COND_AL, 0, 15, 0);
1352 else
1353 tcg_out_dat_imm(s, COND_AL, ARITH_MOV, 0, 0, args[0]);
1354 tcg_out_goto(s, COND_AL, (tcg_target_ulong) tb_ret_addr);
1355 if (args[0] >> 8) {
1356 *ld_ptr = (uint8_t) (s->code_ptr - ld_ptr) - 8;
1357 tcg_out32(s, args[0]);
1358 }
1359 }
1360 #endif
1361 break;
1362 case INDEX_op_goto_tb:
1363 if (s->tb_jmp_offset) {
1364 /* Direct jump method */
1365 #if defined(USE_DIRECT_JUMP)
1366 s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf;
1367 tcg_out_b(s, COND_AL, 8);
1368 #else
1369 tcg_out_ld32_12(s, COND_AL, 15, 15, -4);
1370 s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf;
1371 tcg_out32(s, 0);
1372 #endif
1373 } else {
1374 /* Indirect jump method */
1375 #if 1
1376 c = (int) (s->tb_next + args[0]) - ((int) s->code_ptr + 8);
1377 if (c > 0xfff || c < -0xfff) {
1378 tcg_out_movi32(s, COND_AL, TCG_REG_R0,
1379 (tcg_target_long) (s->tb_next + args[0]));
1380 tcg_out_ld32_12(s, COND_AL, 15, TCG_REG_R0, 0);
1381 } else
1382 tcg_out_ld32_12(s, COND_AL, 15, 15, c);
1383 #else
1384 tcg_out_ld32_12(s, COND_AL, TCG_REG_R0, 15, 0);
1385 tcg_out_ld32_12(s, COND_AL, 15, TCG_REG_R0, 0);
1386 tcg_out32(s, (tcg_target_long) (s->tb_next + args[0]));
1387 #endif
1388 }
1389 s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf;
1390 break;
1391 case INDEX_op_call:
1392 if (const_args[0])
1393 tcg_out_call(s, COND_AL, args[0]);
1394 else
1395 tcg_out_callr(s, COND_AL, args[0]);
1396 break;
1397 case INDEX_op_jmp:
1398 if (const_args[0])
1399 tcg_out_goto(s, COND_AL, args[0]);
1400 else
1401 tcg_out_bx(s, COND_AL, args[0]);
1402 break;
1403 case INDEX_op_br:
1404 tcg_out_goto_label(s, COND_AL, args[0]);
1405 break;
1406
1407 case INDEX_op_ld8u_i32:
1408 tcg_out_ld8u(s, COND_AL, args[0], args[1], args[2]);
1409 break;
1410 case INDEX_op_ld8s_i32:
1411 tcg_out_ld8s(s, COND_AL, args[0], args[1], args[2]);
1412 break;
1413 case INDEX_op_ld16u_i32:
1414 tcg_out_ld16u(s, COND_AL, args[0], args[1], args[2]);
1415 break;
1416 case INDEX_op_ld16s_i32:
1417 tcg_out_ld16s(s, COND_AL, args[0], args[1], args[2]);
1418 break;
1419 case INDEX_op_ld_i32:
1420 tcg_out_ld32u(s, COND_AL, args[0], args[1], args[2]);
1421 break;
1422 case INDEX_op_st8_i32:
1423 tcg_out_st8u(s, COND_AL, args[0], args[1], args[2]);
1424 break;
1425 case INDEX_op_st16_i32:
1426 tcg_out_st16u(s, COND_AL, args[0], args[1], args[2]);
1427 break;
1428 case INDEX_op_st_i32:
1429 tcg_out_st32(s, COND_AL, args[0], args[1], args[2]);
1430 break;
1431
1432 case INDEX_op_mov_i32:
1433 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1434 args[0], 0, args[1], SHIFT_IMM_LSL(0));
1435 break;
1436 case INDEX_op_movi_i32:
1437 tcg_out_movi32(s, COND_AL, args[0], args[1]);
1438 break;
1439 case INDEX_op_add_i32:
1440 c = ARITH_ADD;
1441 goto gen_arith;
1442 case INDEX_op_sub_i32:
1443 c = ARITH_SUB;
1444 goto gen_arith;
1445 case INDEX_op_and_i32:
1446 c = ARITH_AND;
1447 goto gen_arith;
1448 case INDEX_op_or_i32:
1449 c = ARITH_ORR;
1450 goto gen_arith;
1451 case INDEX_op_xor_i32:
1452 c = ARITH_EOR;
1453 /* Fall through. */
1454 gen_arith:
1455 if (const_args[2]) {
1456 int rot;
1457 rot = encode_imm(args[2]);
1458 tcg_out_dat_imm(s, COND_AL, c,
1459 args[0], args[1], rotl(args[2], rot) | (rot << 7));
1460 } else
1461 tcg_out_dat_reg(s, COND_AL, c,
1462 args[0], args[1], args[2], SHIFT_IMM_LSL(0));
1463 break;
1464 case INDEX_op_add2_i32:
1465 tcg_out_dat_reg2(s, COND_AL, ARITH_ADD, ARITH_ADC,
1466 args[0], args[1], args[2], args[3],
1467 args[4], args[5], SHIFT_IMM_LSL(0));
1468 break;
1469 case INDEX_op_sub2_i32:
1470 tcg_out_dat_reg2(s, COND_AL, ARITH_SUB, ARITH_SBC,
1471 args[0], args[1], args[2], args[3],
1472 args[4], args[5], SHIFT_IMM_LSL(0));
1473 break;
1474 case INDEX_op_neg_i32:
1475 tcg_out_dat_imm(s, COND_AL, ARITH_RSB, args[0], args[1], 0);
1476 break;
1477 case INDEX_op_not_i32:
1478 tcg_out_dat_reg(s, COND_AL,
1479 ARITH_MVN, args[0], 0, args[1], SHIFT_IMM_LSL(0));
1480 break;
1481 case INDEX_op_mul_i32:
1482 tcg_out_mul32(s, COND_AL, args[0], args[1], args[2]);
1483 break;
1484 case INDEX_op_mulu2_i32:
1485 tcg_out_umull32(s, COND_AL, args[0], args[1], args[2], args[3]);
1486 break;
1487 case INDEX_op_div2_i32:
1488 tcg_out_div_helper(s, COND_AL, args,
1489 tcg_helper_div_i64, tcg_helper_rem_i64,
1490 SHIFT_IMM_ASR(31));
1491 break;
1492 case INDEX_op_divu2_i32:
1493 tcg_out_div_helper(s, COND_AL, args,
1494 tcg_helper_divu_i64, tcg_helper_remu_i64,
1495 SHIFT_IMM_LSR(31));
1496 break;
1497 /* XXX: Perhaps args[2] & 0x1f is wrong */
1498 case INDEX_op_shl_i32:
1499 c = const_args[2] ?
1500 SHIFT_IMM_LSL(args[2] & 0x1f) : SHIFT_REG_LSL(args[2]);
1501 goto gen_shift32;
1502 case INDEX_op_shr_i32:
1503 c = const_args[2] ? (args[2] & 0x1f) ? SHIFT_IMM_LSR(args[2] & 0x1f) :
1504 SHIFT_IMM_LSL(0) : SHIFT_REG_LSR(args[2]);
1505 goto gen_shift32;
1506 case INDEX_op_sar_i32:
1507 c = const_args[2] ? (args[2] & 0x1f) ? SHIFT_IMM_ASR(args[2] & 0x1f) :
1508 SHIFT_IMM_LSL(0) : SHIFT_REG_ASR(args[2]);
1509 /* Fall through. */
1510 gen_shift32:
1511 tcg_out_dat_reg(s, COND_AL, ARITH_MOV, args[0], 0, args[1], c);
1512 break;
1513
1514 case INDEX_op_brcond_i32:
1515 if (const_args[1]) {
1516 int rot;
1517 rot = encode_imm(args[1]);
1518 tcg_out_dat_imm(s, COND_AL, ARITH_CMP,
1519 0, args[0], rotl(args[1], rot) | (rot << 7));
1520 } else {
1521 tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0,
1522 args[0], args[1], SHIFT_IMM_LSL(0));
1523 }
1524 tcg_out_goto_label(s, tcg_cond_to_arm_cond[args[2]], args[3]);
1525 break;
1526 case INDEX_op_brcond2_i32:
1527 /* The resulting conditions are:
1528 * TCG_COND_EQ --> a0 == a2 && a1 == a3,
1529 * TCG_COND_NE --> (a0 != a2 && a1 == a3) || a1 != a3,
1530 * TCG_COND_LT(U) --> (a0 < a2 && a1 == a3) || a1 < a3,
1531 * TCG_COND_GE(U) --> (a0 >= a2 && a1 == a3) || (a1 >= a3 && a1 != a3),
1532 * TCG_COND_LE(U) --> (a0 <= a2 && a1 == a3) || (a1 <= a3 && a1 != a3),
1533 * TCG_COND_GT(U) --> (a0 > a2 && a1 == a3) || a1 > a3,
1534 */
1535 tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0,
1536 args[1], args[3], SHIFT_IMM_LSL(0));
1537 tcg_out_dat_reg(s, COND_EQ, ARITH_CMP, 0,
1538 args[0], args[2], SHIFT_IMM_LSL(0));
1539 tcg_out_goto_label(s, tcg_cond_to_arm_cond[args[4]], args[5]);
1540 break;
1541 case INDEX_op_setcond_i32:
1542 if (const_args[2]) {
1543 int rot;
1544 rot = encode_imm(args[2]);
1545 tcg_out_dat_imm(s, COND_AL, ARITH_CMP,
1546 0, args[1], rotl(args[2], rot) | (rot << 7));
1547 } else {
1548 tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0,
1549 args[1], args[2], SHIFT_IMM_LSL(0));
1550 }
1551 tcg_out_dat_imm(s, tcg_cond_to_arm_cond[args[3]],
1552 ARITH_MOV, args[0], 0, 1);
1553 tcg_out_dat_imm(s, tcg_cond_to_arm_cond[tcg_invert_cond(args[3])],
1554 ARITH_MOV, args[0], 0, 0);
1555 break;
1556 case INDEX_op_setcond2_i32:
1557 /* See brcond2_i32 comment */
1558 tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0,
1559 args[2], args[4], SHIFT_IMM_LSL(0));
1560 tcg_out_dat_reg(s, COND_EQ, ARITH_CMP, 0,
1561 args[1], args[3], SHIFT_IMM_LSL(0));
1562 tcg_out_dat_imm(s, tcg_cond_to_arm_cond[args[5]],
1563 ARITH_MOV, args[0], 0, 1);
1564 tcg_out_dat_imm(s, tcg_cond_to_arm_cond[tcg_invert_cond(args[5])],
1565 ARITH_MOV, args[0], 0, 0);
1566 break;
1567
1568 case INDEX_op_qemu_ld8u:
1569 tcg_out_qemu_ld(s, COND_AL, args, 0);
1570 break;
1571 case INDEX_op_qemu_ld8s:
1572 tcg_out_qemu_ld(s, COND_AL, args, 0 | 4);
1573 break;
1574 case INDEX_op_qemu_ld16u:
1575 tcg_out_qemu_ld(s, COND_AL, args, 1);
1576 break;
1577 case INDEX_op_qemu_ld16s:
1578 tcg_out_qemu_ld(s, COND_AL, args, 1 | 4);
1579 break;
1580 case INDEX_op_qemu_ld32u:
1581 tcg_out_qemu_ld(s, COND_AL, args, 2);
1582 break;
1583 case INDEX_op_qemu_ld64:
1584 tcg_out_qemu_ld(s, COND_AL, args, 3);
1585 break;
1586
1587 case INDEX_op_qemu_st8:
1588 tcg_out_qemu_st(s, COND_AL, args, 0);
1589 break;
1590 case INDEX_op_qemu_st16:
1591 tcg_out_qemu_st(s, COND_AL, args, 1);
1592 break;
1593 case INDEX_op_qemu_st32:
1594 tcg_out_qemu_st(s, COND_AL, args, 2);
1595 break;
1596 case INDEX_op_qemu_st64:
1597 tcg_out_qemu_st(s, COND_AL, args, 3);
1598 break;
1599
1600 case INDEX_op_ext8s_i32:
1601 #ifdef __ARM_ARCH_7A__
1602 /* sxtb */
1603 tcg_out32(s, 0xe6af0070 | (args[0] << 12) | args[1]);
1604 #else
1605 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1606 args[0], 0, args[1], SHIFT_IMM_LSL(24));
1607 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1608 args[0], 0, args[0], SHIFT_IMM_ASR(24));
1609 #endif
1610 break;
1611 case INDEX_op_ext16s_i32:
1612 #ifdef __ARM_ARCH_7A__
1613 /* sxth */
1614 tcg_out32(s, 0xe6bf0070 | (args[0] << 12) | args[1]);
1615 #else
1616 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1617 args[0], 0, args[1], SHIFT_IMM_LSL(16));
1618 tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
1619 args[0], 0, args[0], SHIFT_IMM_ASR(16));
1620 #endif
1621 break;
1622
1623 default:
1624 tcg_abort();
1625 }
1626 }
1627
1628 static const TCGTargetOpDef arm_op_defs[] = {
1629 { INDEX_op_exit_tb, { } },
1630 { INDEX_op_goto_tb, { } },
1631 { INDEX_op_call, { "ri" } },
1632 { INDEX_op_jmp, { "ri" } },
1633 { INDEX_op_br, { } },
1634
1635 { INDEX_op_mov_i32, { "r", "r" } },
1636 { INDEX_op_movi_i32, { "r" } },
1637
1638 { INDEX_op_ld8u_i32, { "r", "r" } },
1639 { INDEX_op_ld8s_i32, { "r", "r" } },
1640 { INDEX_op_ld16u_i32, { "r", "r" } },
1641 { INDEX_op_ld16s_i32, { "r", "r" } },
1642 { INDEX_op_ld_i32, { "r", "r" } },
1643 { INDEX_op_st8_i32, { "r", "r" } },
1644 { INDEX_op_st16_i32, { "r", "r" } },
1645 { INDEX_op_st_i32, { "r", "r" } },
1646
1647 /* TODO: "r", "r", "ri" */
1648 { INDEX_op_add_i32, { "r", "r", "rI" } },
1649 { INDEX_op_sub_i32, { "r", "r", "rI" } },
1650 { INDEX_op_mul_i32, { "r", "r", "r" } },
1651 { INDEX_op_mulu2_i32, { "r", "r", "r", "r" } },
1652 { INDEX_op_div2_i32, { "r", "r", "r", "1", "2" } },
1653 { INDEX_op_divu2_i32, { "r", "r", "r", "1", "2" } },
1654 { INDEX_op_and_i32, { "r", "r", "rI" } },
1655 { INDEX_op_or_i32, { "r", "r", "rI" } },
1656 { INDEX_op_xor_i32, { "r", "r", "rI" } },
1657 { INDEX_op_neg_i32, { "r", "r" } },
1658 { INDEX_op_not_i32, { "r", "r" } },
1659
1660 { INDEX_op_shl_i32, { "r", "r", "ri" } },
1661 { INDEX_op_shr_i32, { "r", "r", "ri" } },
1662 { INDEX_op_sar_i32, { "r", "r", "ri" } },
1663
1664 { INDEX_op_brcond_i32, { "r", "rI" } },
1665 { INDEX_op_setcond_i32, { "r", "r", "rI" } },
1666
1667 /* TODO: "r", "r", "r", "r", "ri", "ri" */
1668 { INDEX_op_add2_i32, { "r", "r", "r", "r", "r", "r" } },
1669 { INDEX_op_sub2_i32, { "r", "r", "r", "r", "r", "r" } },
1670 { INDEX_op_brcond2_i32, { "r", "r", "r", "r" } },
1671 { INDEX_op_setcond2_i32, { "r", "r", "r", "r", "r" } },
1672
1673 { INDEX_op_qemu_ld8u, { "r", "x", "X" } },
1674 { INDEX_op_qemu_ld8s, { "r", "x", "X" } },
1675 { INDEX_op_qemu_ld16u, { "r", "x", "X" } },
1676 { INDEX_op_qemu_ld16s, { "r", "x", "X" } },
1677 { INDEX_op_qemu_ld32u, { "r", "x", "X" } },
1678 { INDEX_op_qemu_ld64, { "d", "r", "x", "X" } },
1679
1680 { INDEX_op_qemu_st8, { "x", "x", "X" } },
1681 { INDEX_op_qemu_st16, { "x", "x", "X" } },
1682 { INDEX_op_qemu_st32, { "x", "x", "X" } },
1683 { INDEX_op_qemu_st64, { "x", "D", "x", "X" } },
1684
1685 { INDEX_op_ext8s_i32, { "r", "r" } },
1686 { INDEX_op_ext16s_i32, { "r", "r" } },
1687
1688 { -1 },
1689 };
1690
1691 void tcg_target_init(TCGContext *s)
1692 {
1693 /* fail safe */
1694 if ((1 << CPU_TLB_ENTRY_BITS) != sizeof(CPUTLBEntry))
1695 tcg_abort();
1696
1697 tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0,
1698 ((2 << TCG_REG_R14) - 1) & ~(1 << TCG_REG_R8));
1699 tcg_regset_set32(tcg_target_call_clobber_regs, 0,
1700 ((2 << TCG_REG_R3) - 1) |
1701 (1 << TCG_REG_R12) | (1 << TCG_REG_R14));
1702
1703 tcg_regset_clear(s->reserved_regs);
1704 #ifdef SAVE_LR
1705 tcg_regset_set_reg(s->reserved_regs, TCG_REG_R14);
1706 #endif
1707 tcg_regset_set_reg(s->reserved_regs, TCG_REG_CALL_STACK);
1708 tcg_regset_set_reg(s->reserved_regs, TCG_REG_R8);
1709
1710 tcg_add_target_add_op_defs(arm_op_defs);
1711 }
1712
1713 static inline void tcg_out_ld(TCGContext *s, TCGType type, int arg,
1714 int arg1, tcg_target_long arg2)
1715 {
1716 tcg_out_ld32u(s, COND_AL, arg, arg1, arg2);
1717 }
1718
1719 static inline void tcg_out_st(TCGContext *s, TCGType type, int arg,
1720 int arg1, tcg_target_long arg2)
1721 {
1722 tcg_out_st32(s, COND_AL, arg, arg1, arg2);
1723 }
1724
1725 static void tcg_out_addi(TCGContext *s, int reg, tcg_target_long val)
1726 {
1727 if (val > 0)
1728 if (val < 0x100)
1729 tcg_out_dat_imm(s, COND_AL, ARITH_ADD, reg, reg, val);
1730 else
1731 tcg_abort();
1732 else if (val < 0) {
1733 if (val > -0x100)
1734 tcg_out_dat_imm(s, COND_AL, ARITH_SUB, reg, reg, -val);
1735 else
1736 tcg_abort();
1737 }
1738 }
1739
1740 static inline void tcg_out_mov(TCGContext *s, int ret, int arg)
1741 {
1742 tcg_out_dat_reg(s, COND_AL, ARITH_MOV, ret, 0, arg, SHIFT_IMM_LSL(0));
1743 }
1744
1745 static inline void tcg_out_movi(TCGContext *s, TCGType type,
1746 int ret, tcg_target_long arg)
1747 {
1748 tcg_out_movi32(s, COND_AL, ret, arg);
1749 }
1750
1751 void tcg_target_qemu_prologue(TCGContext *s)
1752 {
1753 /* stmdb sp!, { r9 - r11, lr } */
1754 tcg_out32(s, (COND_AL << 28) | 0x092d4e00);
1755
1756 tcg_out_bx(s, COND_AL, TCG_REG_R0);
1757 tb_ret_addr = s->code_ptr;
1758
1759 /* ldmia sp!, { r9 - r11, pc } */
1760 tcg_out32(s, (COND_AL << 28) | 0x08bd8e00);
1761 }
Anthony Liguori's QEMU queue