/[pcre]/code/trunk/sljit/sljitNativeARM_v5.c
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Contents of /code/trunk/sljit/sljitNativeARM_v5.c

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Revision 860 - (show annotations)
Mon Jan 9 20:12:58 2012 UTC (7 years, 8 months ago) by zherczeg
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rename PCRE_SCHAR16 to PCRE_UCHAR16 and JIT compiler update
1 /*
2 * Stack-less Just-In-Time compiler
3 *
4 * Copyright 2009-2012 Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without modification, are
7 * permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice, this list of
10 * conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
13 * of conditions and the following disclaimer in the documentation and/or other materials
14 * provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
19 * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
21 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
22 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 SLJIT_API_FUNC_ATTRIBUTE SLJIT_CONST char* sljit_get_platform_name()
28 {
29 #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
30 return "arm-v7";
31 #elif (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
32 return "arm-v5";
33 #else
34 #error "Internal error: Unknown ARM architecture"
35 #endif
36 }
37
38 /* Last register + 1. */
39 #define TMP_REG1 (SLJIT_NO_REGISTERS + 1)
40 #define TMP_REG2 (SLJIT_NO_REGISTERS + 2)
41 #define TMP_REG3 (SLJIT_NO_REGISTERS + 3)
42 #define TMP_PC (SLJIT_NO_REGISTERS + 4)
43
44 #define TMP_FREG1 (SLJIT_FLOAT_REG4 + 1)
45 #define TMP_FREG2 (SLJIT_FLOAT_REG4 + 2)
46
47 /* In ARM instruction words.
48 Cache lines are usually 32 byte aligned. */
49 #define CONST_POOL_ALIGNMENT 8
50 #define CONST_POOL_EMPTY 0xffffffff
51
52 #define ALIGN_INSTRUCTION(ptr) \
53 (sljit_uw*)(((sljit_uw)(ptr) + (CONST_POOL_ALIGNMENT * sizeof(sljit_uw)) - 1) & ~((CONST_POOL_ALIGNMENT * sizeof(sljit_uw)) - 1))
54 #define MAX_DIFFERENCE(max_diff) \
55 (((max_diff) / (int)sizeof(sljit_uw)) - (CONST_POOL_ALIGNMENT - 1))
56
57 /* See sljit_emit_enter and sljit_emit_op0 if you want to change them. */
58 static SLJIT_CONST sljit_ub reg_map[SLJIT_NO_REGISTERS + 5] = {
59 0, 0, 1, 2, 10, 11, 4, 5, 6, 7, 8, 13, 3, 12, 14, 15
60 };
61
62 #define RM(rm) (reg_map[rm])
63 #define RD(rd) (reg_map[rd] << 12)
64 #define RN(rn) (reg_map[rn] << 16)
65
66 /* --------------------------------------------------------------------- */
67 /* Instrucion forms */
68 /* --------------------------------------------------------------------- */
69
70 /* The instruction includes the AL condition.
71 INST_NAME - CONDITIONAL remove this flag. */
72 #define COND_MASK 0xf0000000
73 #define CONDITIONAL 0xe0000000
74 #define PUSH_POOL 0xff000000
75
76 /* DP - Data Processing instruction (use with EMIT_DATA_PROCESS_INS). */
77 #define ADC_DP 0x5
78 #define ADD_DP 0x4
79 #define AND_DP 0x0
80 #define B 0xea000000
81 #define BIC_DP 0xe
82 #define BL 0xeb000000
83 #define BLX 0xe12fff30
84 #define BX 0xe12fff10
85 #define CLZ 0xe16f0f10
86 #define CMP_DP 0xa
87 #define BKPT 0xe1200070
88 #define EOR_DP 0x1
89 #define MOV_DP 0xd
90 #define MUL 0xe0000090
91 #define MVN_DP 0xf
92 #define NOP 0xe1a00000
93 #define ORR_DP 0xc
94 #define PUSH 0xe92d0000
95 #define POP 0xe8bd0000
96 #define RSB_DP 0x3
97 #define RSC_DP 0x7
98 #define SBC_DP 0x6
99 #define SMULL 0xe0c00090
100 #define SUB_DP 0x2
101 #define UMULL 0xe0800090
102 #define VABS_F64 0xeeb00bc0
103 #define VADD_F64 0xee300b00
104 #define VCMP_F64 0xeeb40b40
105 #define VDIV_F64 0xee800b00
106 #define VMOV_F64 0xeeb00b40
107 #define VMRS 0xeef1fa10
108 #define VMUL_F64 0xee200b00
109 #define VNEG_F64 0xeeb10b40
110 #define VSTR 0xed000b00
111 #define VSUB_F64 0xee300b40
112
113 #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
114 /* Arm v7 specific instructions. */
115 #define MOVW 0xe3000000
116 #define MOVT 0xe3400000
117 #define SXTB 0xe6af0070
118 #define SXTH 0xe6bf0070
119 #define UXTB 0xe6ef0070
120 #define UXTH 0xe6ff0070
121 #endif
122
123 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
124
125 static int push_cpool(struct sljit_compiler *compiler)
126 {
127 /* Pushing the constant pool into the instruction stream. */
128 sljit_uw* inst;
129 sljit_uw* cpool_ptr;
130 sljit_uw* cpool_end;
131 int i;
132
133 /* The label could point the address after the constant pool. */
134 if (compiler->last_label && compiler->last_label->size == compiler->size)
135 compiler->last_label->size += compiler->cpool_fill + (CONST_POOL_ALIGNMENT - 1) + 1;
136
137 SLJIT_ASSERT(compiler->cpool_fill > 0 && compiler->cpool_fill <= CPOOL_SIZE);
138 inst = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
139 FAIL_IF(!inst);
140 compiler->size++;
141 *inst = 0xff000000 | compiler->cpool_fill;
142
143 for (i = 0; i < CONST_POOL_ALIGNMENT - 1; i++) {
144 inst = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
145 FAIL_IF(!inst);
146 compiler->size++;
147 *inst = 0;
148 }
149
150 cpool_ptr = compiler->cpool;
151 cpool_end = cpool_ptr + compiler->cpool_fill;
152 while (cpool_ptr < cpool_end) {
153 inst = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
154 FAIL_IF(!inst);
155 compiler->size++;
156 *inst = *cpool_ptr++;
157 }
158 compiler->cpool_diff = CONST_POOL_EMPTY;
159 compiler->cpool_fill = 0;
160 return SLJIT_SUCCESS;
161 }
162
163 static int push_inst(struct sljit_compiler *compiler, sljit_uw inst)
164 {
165 sljit_uw* ptr;
166
167 if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092)))
168 FAIL_IF(push_cpool(compiler));
169
170 ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
171 FAIL_IF(!ptr);
172 compiler->size++;
173 *ptr = inst;
174 return SLJIT_SUCCESS;
175 }
176
177 static int push_inst_with_literal(struct sljit_compiler *compiler, sljit_uw inst, sljit_uw literal)
178 {
179 sljit_uw* ptr;
180 sljit_uw cpool_index = CPOOL_SIZE;
181 sljit_uw* cpool_ptr;
182 sljit_uw* cpool_end;
183 sljit_ub* cpool_unique_ptr;
184
185 if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092)))
186 FAIL_IF(push_cpool(compiler));
187 else if (compiler->cpool_fill > 0) {
188 cpool_ptr = compiler->cpool;
189 cpool_end = cpool_ptr + compiler->cpool_fill;
190 cpool_unique_ptr = compiler->cpool_unique;
191 do {
192 if ((*cpool_ptr == literal) && !(*cpool_unique_ptr)) {
193 cpool_index = cpool_ptr - compiler->cpool;
194 break;
195 }
196 cpool_ptr++;
197 cpool_unique_ptr++;
198 } while (cpool_ptr < cpool_end);
199 }
200
201 if (cpool_index == CPOOL_SIZE) {
202 /* Must allocate a new entry in the literal pool. */
203 if (compiler->cpool_fill < CPOOL_SIZE) {
204 cpool_index = compiler->cpool_fill;
205 compiler->cpool_fill++;
206 }
207 else {
208 FAIL_IF(push_cpool(compiler));
209 cpool_index = 0;
210 compiler->cpool_fill = 1;
211 }
212 }
213
214 SLJIT_ASSERT((inst & 0xfff) == 0);
215 ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
216 FAIL_IF(!ptr);
217 compiler->size++;
218 *ptr = inst | cpool_index;
219
220 compiler->cpool[cpool_index] = literal;
221 compiler->cpool_unique[cpool_index] = 0;
222 if (compiler->cpool_diff == CONST_POOL_EMPTY)
223 compiler->cpool_diff = compiler->size;
224 return SLJIT_SUCCESS;
225 }
226
227 static int push_inst_with_unique_literal(struct sljit_compiler *compiler, sljit_uw inst, sljit_uw literal)
228 {
229 sljit_uw* ptr;
230 if (SLJIT_UNLIKELY((compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092)) || compiler->cpool_fill >= CPOOL_SIZE))
231 FAIL_IF(push_cpool(compiler));
232
233 SLJIT_ASSERT(compiler->cpool_fill < CPOOL_SIZE && (inst & 0xfff) == 0);
234 ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
235 FAIL_IF(!ptr);
236 compiler->size++;
237 *ptr = inst | compiler->cpool_fill;
238
239 compiler->cpool[compiler->cpool_fill] = literal;
240 compiler->cpool_unique[compiler->cpool_fill] = 1;
241 compiler->cpool_fill++;
242 if (compiler->cpool_diff == CONST_POOL_EMPTY)
243 compiler->cpool_diff = compiler->size;
244 return SLJIT_SUCCESS;
245 }
246
247 static SLJIT_INLINE int prepare_blx(struct sljit_compiler *compiler)
248 {
249 /* Place for at least two instruction (doesn't matter whether the first has a literal). */
250 if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4088)))
251 return push_cpool(compiler);
252 return SLJIT_SUCCESS;
253 }
254
255 static SLJIT_INLINE int emit_blx(struct sljit_compiler *compiler)
256 {
257 /* Must follow tightly the previous instruction (to be able to convert it to bl instruction). */
258 SLJIT_ASSERT(compiler->cpool_diff == CONST_POOL_EMPTY || compiler->size - compiler->cpool_diff < MAX_DIFFERENCE(4092));
259 return push_inst(compiler, BLX | RM(TMP_REG1));
260 }
261
262 static sljit_uw patch_pc_relative_loads(sljit_uw *last_pc_patch, sljit_uw *code_ptr, sljit_uw* const_pool, sljit_uw cpool_size)
263 {
264 sljit_uw diff;
265 sljit_uw ind;
266 sljit_uw counter = 0;
267 sljit_uw* clear_const_pool = const_pool;
268 sljit_uw* clear_const_pool_end = const_pool + cpool_size;
269
270 SLJIT_ASSERT(const_pool - code_ptr <= CONST_POOL_ALIGNMENT);
271 /* Set unused flag for all literals in the constant pool.
272 I.e.: unused literals can belong to branches, which can be encoded as B or BL.
273 We can "compress" the constant pool by discarding these literals. */
274 while (clear_const_pool < clear_const_pool_end)
275 *clear_const_pool++ = (sljit_uw)(-1);
276
277 while (last_pc_patch < code_ptr) {
278 /* Data transfer instruction with Rn == r15. */
279 if ((*last_pc_patch & 0x0c0f0000) == 0x040f0000) {
280 diff = const_pool - last_pc_patch;
281 ind = (*last_pc_patch) & 0xfff;
282
283 /* Must be a load instruction with immediate offset. */
284 SLJIT_ASSERT(ind < cpool_size && !(*last_pc_patch & (1 << 25)) && (*last_pc_patch & (1 << 20)));
285 if ((int)const_pool[ind] < 0) {
286 const_pool[ind] = counter;
287 ind = counter;
288 counter++;
289 }
290 else
291 ind = const_pool[ind];
292
293 SLJIT_ASSERT(diff >= 1);
294 if (diff >= 2 || ind > 0) {
295 diff = (diff + ind - 2) << 2;
296 SLJIT_ASSERT(diff <= 0xfff);
297 *last_pc_patch = (*last_pc_patch & ~0xfff) | diff;
298 }
299 else
300 *last_pc_patch = (*last_pc_patch & ~(0xfff | (1 << 23))) | 0x004;
301 }
302 last_pc_patch++;
303 }
304 return counter;
305 }
306
307 /* In some rare ocasions we may need future patches. The probability is close to 0 in practice. */
308 struct future_patch {
309 struct future_patch* next;
310 int index;
311 int value;
312 };
313
314 static SLJIT_INLINE int resolve_const_pool_index(struct future_patch **first_patch, sljit_uw cpool_current_index, sljit_uw *cpool_start_address, sljit_uw *buf_ptr)
315 {
316 int value;
317 struct future_patch *curr_patch, *prev_patch;
318
319 /* Using the values generated by patch_pc_relative_loads. */
320 if (!*first_patch)
321 value = (int)cpool_start_address[cpool_current_index];
322 else {
323 curr_patch = *first_patch;
324 prev_patch = 0;
325 while (1) {
326 if (!curr_patch) {
327 value = (int)cpool_start_address[cpool_current_index];
328 break;
329 }
330 if ((sljit_uw)curr_patch->index == cpool_current_index) {
331 value = curr_patch->value;
332 if (prev_patch)
333 prev_patch->next = curr_patch->next;
334 else
335 *first_patch = curr_patch->next;
336 SLJIT_FREE(curr_patch);
337 break;
338 }
339 prev_patch = curr_patch;
340 curr_patch = curr_patch->next;
341 }
342 }
343
344 if (value >= 0) {
345 if ((sljit_uw)value > cpool_current_index) {
346 curr_patch = (struct future_patch*)SLJIT_MALLOC(sizeof(struct future_patch));
347 if (!curr_patch) {
348 while (*first_patch) {
349 curr_patch = *first_patch;
350 *first_patch = (*first_patch)->next;
351 SLJIT_FREE(curr_patch);
352 }
353 return SLJIT_ERR_ALLOC_FAILED;
354 }
355 curr_patch->next = *first_patch;
356 curr_patch->index = value;
357 curr_patch->value = cpool_start_address[value];
358 *first_patch = curr_patch;
359 }
360 cpool_start_address[value] = *buf_ptr;
361 }
362 return SLJIT_SUCCESS;
363 }
364
365 #else
366
367 static int push_inst(struct sljit_compiler *compiler, sljit_uw inst)
368 {
369 sljit_uw* ptr;
370
371 ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
372 FAIL_IF(!ptr);
373 compiler->size++;
374 *ptr = inst;
375 return SLJIT_SUCCESS;
376 }
377
378 static SLJIT_INLINE int emit_imm(struct sljit_compiler *compiler, int reg, sljit_w imm)
379 {
380 FAIL_IF(push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | (imm & 0xfff)));
381 return push_inst(compiler, MOVT | RD(reg) | ((imm >> 12) & 0xf0000) | ((imm >> 16) & 0xfff));
382 }
383
384 #endif
385
386 static SLJIT_INLINE int detect_jump_type(struct sljit_jump *jump, sljit_uw *code_ptr, sljit_uw *code)
387 {
388 sljit_w diff;
389
390 if (jump->flags & SLJIT_REWRITABLE_JUMP)
391 return 0;
392
393 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
394 if (jump->flags & IS_BL)
395 code_ptr--;
396
397 if (jump->flags & JUMP_ADDR)
398 diff = ((sljit_w)jump->u.target - (sljit_w)(code_ptr + 2));
399 else {
400 SLJIT_ASSERT(jump->flags & JUMP_LABEL);
401 diff = ((sljit_w)(code + jump->u.label->size) - (sljit_w)(code_ptr + 2));
402 }
403
404 /* Branch to Thumb code has not been optimized yet. */
405 if (diff & 0x3)
406 return 0;
407
408 diff >>= 2;
409 if (jump->flags & IS_BL) {
410 if (diff <= 0x01ffffff && diff >= -0x02000000) {
411 *code_ptr = (BL - CONDITIONAL) | (*(code_ptr + 1) & COND_MASK);
412 jump->flags |= PATCH_B;
413 return 1;
414 }
415 }
416 else {
417 if (diff <= 0x01ffffff && diff >= -0x02000000) {
418 *code_ptr = (B - CONDITIONAL) | (*code_ptr & COND_MASK);
419 jump->flags |= PATCH_B;
420 }
421 }
422 #else
423 if (jump->flags & JUMP_ADDR)
424 diff = ((sljit_w)jump->u.target - (sljit_w)code_ptr);
425 else {
426 SLJIT_ASSERT(jump->flags & JUMP_LABEL);
427 diff = ((sljit_w)(code + jump->u.label->size) - (sljit_w)code_ptr);
428 }
429
430 /* Branch to Thumb code has not been optimized yet. */
431 if (diff & 0x3)
432 return 0;
433
434 diff >>= 2;
435 if (diff <= 0x01ffffff && diff >= -0x02000000) {
436 code_ptr -= 2;
437 *code_ptr = ((jump->flags & IS_BL) ? (BL - CONDITIONAL) : (B - CONDITIONAL)) | (code_ptr[2] & COND_MASK);
438 jump->flags |= PATCH_B;
439 return 1;
440 }
441 #endif
442 return 0;
443 }
444
445 static SLJIT_INLINE void inline_set_jump_addr(sljit_uw addr, sljit_uw new_addr, int flush)
446 {
447 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
448 sljit_uw *ptr = (sljit_uw*)addr;
449 sljit_uw *inst = (sljit_uw*)ptr[0];
450 sljit_uw mov_pc = ptr[1];
451 int bl = (mov_pc & 0x0000f000) != RD(TMP_PC);
452 sljit_w diff = (sljit_w)(((sljit_w)new_addr - (sljit_w)(inst + 2)) >> 2);
453
454 if (diff <= 0x7fffff && diff >= -0x800000) {
455 /* Turn to branch. */
456 if (!bl) {
457 inst[0] = (mov_pc & COND_MASK) | (B - CONDITIONAL) | (diff & 0xffffff);
458 if (flush) {
459 SLJIT_CACHE_FLUSH(inst, inst + 1);
460 }
461 } else {
462 inst[0] = (mov_pc & COND_MASK) | (BL - CONDITIONAL) | (diff & 0xffffff);
463 inst[1] = NOP;
464 if (flush) {
465 SLJIT_CACHE_FLUSH(inst, inst + 2);
466 }
467 }
468 } else {
469 /* Get the position of the constant. */
470 if (mov_pc & (1 << 23))
471 ptr = inst + ((mov_pc & 0xfff) >> 2) + 2;
472 else
473 ptr = inst + 1;
474
475 if (*inst != mov_pc) {
476 inst[0] = mov_pc;
477 if (!bl) {
478 if (flush) {
479 SLJIT_CACHE_FLUSH(inst, inst + 1);
480 }
481 } else {
482 inst[1] = BLX | RM(TMP_REG1);
483 if (flush) {
484 SLJIT_CACHE_FLUSH(inst, inst + 2);
485 }
486 }
487 }
488 *ptr = new_addr;
489 }
490 #else
491 sljit_uw *inst = (sljit_uw*)addr;
492 SLJIT_ASSERT((inst[0] & 0xfff00000) == MOVW && (inst[1] & 0xfff00000) == MOVT);
493 inst[0] = MOVW | (inst[0] & 0xf000) | ((new_addr << 4) & 0xf0000) | (new_addr & 0xfff);
494 inst[1] = MOVT | (inst[1] & 0xf000) | ((new_addr >> 12) & 0xf0000) | ((new_addr >> 16) & 0xfff);
495 if (flush) {
496 SLJIT_CACHE_FLUSH(inst, inst + 2);
497 }
498 #endif
499 }
500
501 static sljit_uw get_immediate(sljit_uw imm);
502
503 static SLJIT_INLINE void inline_set_const(sljit_uw addr, sljit_w new_constant, int flush)
504 {
505 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
506 sljit_uw *ptr = (sljit_uw*)addr;
507 sljit_uw *inst = (sljit_uw*)ptr[0];
508 sljit_uw ldr_literal = ptr[1];
509 sljit_uw src2;
510
511 src2 = get_immediate(new_constant);
512 if (src2) {
513 *inst = 0xe3a00000 | (ldr_literal & 0xf000) | src2;
514 if (flush) {
515 SLJIT_CACHE_FLUSH(inst, inst + 1);
516 }
517 return;
518 }
519
520 src2 = get_immediate(~new_constant);
521 if (src2) {
522 *inst = 0xe3e00000 | (ldr_literal & 0xf000) | src2;
523 if (flush) {
524 SLJIT_CACHE_FLUSH(inst, inst + 1);
525 }
526 return;
527 }
528
529 if (ldr_literal & (1 << 23))
530 ptr = inst + ((ldr_literal & 0xfff) >> 2) + 2;
531 else
532 ptr = inst + 1;
533
534 if (*inst != ldr_literal) {
535 *inst = ldr_literal;
536 if (flush) {
537 SLJIT_CACHE_FLUSH(inst, inst + 1);
538 }
539 }
540 *ptr = new_constant;
541 #else
542 sljit_uw *inst = (sljit_uw*)addr;
543 SLJIT_ASSERT((inst[0] & 0xfff00000) == MOVW && (inst[1] & 0xfff00000) == MOVT);
544 inst[0] = MOVW | (inst[0] & 0xf000) | ((new_constant << 4) & 0xf0000) | (new_constant & 0xfff);
545 inst[1] = MOVT | (inst[1] & 0xf000) | ((new_constant >> 12) & 0xf0000) | ((new_constant >> 16) & 0xfff);
546 if (flush) {
547 SLJIT_CACHE_FLUSH(inst, inst + 2);
548 }
549 #endif
550 }
551
552 SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler)
553 {
554 struct sljit_memory_fragment *buf;
555 sljit_uw *code;
556 sljit_uw *code_ptr;
557 sljit_uw *buf_ptr;
558 sljit_uw *buf_end;
559 sljit_uw size;
560 sljit_uw word_count;
561 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
562 sljit_uw cpool_size;
563 sljit_uw cpool_skip_alignment;
564 sljit_uw cpool_current_index;
565 sljit_uw *cpool_start_address;
566 sljit_uw *last_pc_patch;
567 struct future_patch *first_patch;
568 #endif
569
570 struct sljit_label *label;
571 struct sljit_jump *jump;
572 struct sljit_const *const_;
573
574 CHECK_ERROR_PTR();
575 check_sljit_generate_code(compiler);
576 reverse_buf(compiler);
577
578 /* Second code generation pass. */
579 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
580 size = compiler->size + (compiler->patches << 1);
581 if (compiler->cpool_fill > 0)
582 size += compiler->cpool_fill + CONST_POOL_ALIGNMENT - 1;
583 #else
584 size = compiler->size;
585 #endif
586 code = (sljit_uw*)SLJIT_MALLOC_EXEC(size * sizeof(sljit_uw));
587 PTR_FAIL_WITH_EXEC_IF(code);
588 buf = compiler->buf;
589
590 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
591 cpool_size = 0;
592 cpool_skip_alignment = 0;
593 cpool_current_index = 0;
594 cpool_start_address = NULL;
595 first_patch = NULL;
596 last_pc_patch = code;
597 #endif
598
599 code_ptr = code;
600 word_count = 0;
601
602 label = compiler->labels;
603 jump = compiler->jumps;
604 const_ = compiler->consts;
605
606 if (label && label->size == 0) {
607 label->addr = (sljit_uw)code;
608 label->size = 0;
609 label = label->next;
610 }
611
612 do {
613 buf_ptr = (sljit_uw*)buf->memory;
614 buf_end = buf_ptr + (buf->used_size >> 2);
615 do {
616 word_count++;
617 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
618 if (cpool_size > 0) {
619 if (cpool_skip_alignment > 0) {
620 buf_ptr++;
621 cpool_skip_alignment--;
622 }
623 else {
624 if (SLJIT_UNLIKELY(resolve_const_pool_index(&first_patch, cpool_current_index, cpool_start_address, buf_ptr))) {
625 SLJIT_FREE_EXEC(code);
626 compiler->error = SLJIT_ERR_ALLOC_FAILED;
627 return NULL;
628 }
629 buf_ptr++;
630 if (++cpool_current_index >= cpool_size) {
631 SLJIT_ASSERT(!first_patch);
632 cpool_size = 0;
633 if (label && label->size == word_count) {
634 /* Points after the current instruction. */
635 label->addr = (sljit_uw)code_ptr;
636 label->size = code_ptr - code;
637 label = label->next;
638 }
639 }
640 }
641 }
642 else if ((*buf_ptr & 0xff000000) != PUSH_POOL) {
643 #endif
644 *code_ptr = *buf_ptr++;
645 /* These structures are ordered by their address. */
646 SLJIT_ASSERT(!label || label->size >= word_count);
647 SLJIT_ASSERT(!jump || jump->addr >= word_count);
648 SLJIT_ASSERT(!const_ || const_->addr >= word_count);
649 if (jump && jump->addr == word_count) {
650 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
651 if (detect_jump_type(jump, code_ptr, code))
652 code_ptr--;
653 jump->addr = (sljit_uw)code_ptr;
654 #else
655 jump->addr = (sljit_uw)(code_ptr - 2);
656 if (detect_jump_type(jump, code_ptr, code))
657 code_ptr -= 2;
658 #endif
659 jump = jump->next;
660 }
661 if (label && label->size == word_count) {
662 /* code_ptr can be affected above. */
663 label->addr = (sljit_uw)(code_ptr + 1);
664 label->size = (code_ptr + 1) - code;
665 label = label->next;
666 }
667 if (const_ && const_->addr == word_count) {
668 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
669 const_->addr = (sljit_uw)code_ptr;
670 #else
671 const_->addr = (sljit_uw)(code_ptr - 1);
672 #endif
673 const_ = const_->next;
674 }
675 code_ptr++;
676 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
677 }
678 else {
679 /* Fortunately, no need to shift. */
680 cpool_size = *buf_ptr++ & ~PUSH_POOL;
681 SLJIT_ASSERT(cpool_size > 0);
682 cpool_start_address = ALIGN_INSTRUCTION(code_ptr + 1);
683 cpool_current_index = patch_pc_relative_loads(last_pc_patch, code_ptr, cpool_start_address, cpool_size);
684 if (cpool_current_index > 0) {
685 /* Unconditional branch. */
686 *code_ptr = B | (((cpool_start_address - code_ptr) + cpool_current_index - 2) & ~PUSH_POOL);
687 code_ptr = cpool_start_address + cpool_current_index;
688 }
689 cpool_skip_alignment = CONST_POOL_ALIGNMENT - 1;
690 cpool_current_index = 0;
691 last_pc_patch = code_ptr;
692 }
693 #endif
694 } while (buf_ptr < buf_end);
695 buf = buf->next;
696 } while (buf);
697
698 SLJIT_ASSERT(!label);
699 SLJIT_ASSERT(!jump);
700 SLJIT_ASSERT(!const_);
701
702 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
703 SLJIT_ASSERT(cpool_size == 0);
704 if (compiler->cpool_fill > 0) {
705 cpool_start_address = ALIGN_INSTRUCTION(code_ptr);
706 cpool_current_index = patch_pc_relative_loads(last_pc_patch, code_ptr, cpool_start_address, compiler->cpool_fill);
707 if (cpool_current_index > 0)
708 code_ptr = cpool_start_address + cpool_current_index;
709
710 buf_ptr = compiler->cpool;
711 buf_end = buf_ptr + compiler->cpool_fill;
712 cpool_current_index = 0;
713 while (buf_ptr < buf_end) {
714 if (SLJIT_UNLIKELY(resolve_const_pool_index(&first_patch, cpool_current_index, cpool_start_address, buf_ptr))) {
715 SLJIT_FREE_EXEC(code);
716 compiler->error = SLJIT_ERR_ALLOC_FAILED;
717 return NULL;
718 }
719 buf_ptr++;
720 cpool_current_index++;
721 }
722 SLJIT_ASSERT(!first_patch);
723 }
724 #endif
725
726 jump = compiler->jumps;
727 while (jump) {
728 buf_ptr = (sljit_uw*)jump->addr;
729
730 if (jump->flags & PATCH_B) {
731 if (!(jump->flags & JUMP_ADDR)) {
732 SLJIT_ASSERT(jump->flags & JUMP_LABEL);
733 SLJIT_ASSERT(((sljit_w)jump->u.label->addr - (sljit_w)(buf_ptr + 2)) <= 0x01ffffff && ((sljit_w)jump->u.label->addr - (sljit_w)(buf_ptr + 2)) >= -0x02000000);
734 *buf_ptr |= (((sljit_w)jump->u.label->addr - (sljit_w)(buf_ptr + 2)) >> 2) & 0x00ffffff;
735 }
736 else {
737 SLJIT_ASSERT(((sljit_w)jump->u.target - (sljit_w)(buf_ptr + 2)) <= 0x01ffffff && ((sljit_w)jump->u.target - (sljit_w)(buf_ptr + 2)) >= -0x02000000);
738 *buf_ptr |= (((sljit_w)jump->u.target - (sljit_w)(buf_ptr + 2)) >> 2) & 0x00ffffff;
739 }
740 }
741 else if (jump->flags & SLJIT_REWRITABLE_JUMP) {
742 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
743 jump->addr = (sljit_uw)code_ptr;
744 code_ptr[0] = (sljit_uw)buf_ptr;
745 code_ptr[1] = *buf_ptr;
746 inline_set_jump_addr((sljit_uw)code_ptr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0);
747 code_ptr += 2;
748 #else
749 inline_set_jump_addr((sljit_uw)buf_ptr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0);
750 #endif
751 }
752 else {
753 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
754 if (jump->flags & IS_BL)
755 buf_ptr--;
756 if (*buf_ptr & (1 << 23))
757 buf_ptr += ((*buf_ptr & 0xfff) >> 2) + 2;
758 else
759 buf_ptr += 1;
760 *buf_ptr = (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target;
761 #else
762 inline_set_jump_addr((sljit_uw)buf_ptr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0);
763 #endif
764 }
765 jump = jump->next;
766 }
767
768 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
769 const_ = compiler->consts;
770 while (const_) {
771 buf_ptr = (sljit_uw*)const_->addr;
772 const_->addr = (sljit_uw)code_ptr;
773
774 code_ptr[0] = (sljit_uw)buf_ptr;
775 code_ptr[1] = *buf_ptr;
776 if (*buf_ptr & (1 << 23))
777 buf_ptr += ((*buf_ptr & 0xfff) >> 2) + 2;
778 else
779 buf_ptr += 1;
780 /* Set the value again (can be a simple constant). */
781 inline_set_const((sljit_uw)code_ptr, *buf_ptr, 0);
782 code_ptr += 2;
783
784 const_ = const_->next;
785 }
786 #endif
787
788 SLJIT_ASSERT(code_ptr - code <= (int)size);
789
790 SLJIT_CACHE_FLUSH(code, code_ptr);
791 compiler->error = SLJIT_ERR_COMPILED;
792 compiler->executable_size = size * sizeof(sljit_uw);
793 return code;
794 }
795
796 /* emit_op inp_flags.
797 WRITE_BACK must be the first, since it is a flag. */
798 #define WRITE_BACK 0x01
799 #define ALLOW_IMM 0x02
800 #define ALLOW_INV_IMM 0x04
801 #define ALLOW_ANY_IMM (ALLOW_IMM | ALLOW_INV_IMM)
802 #define ARG_TEST 0x08
803
804 /* Creates an index in data_transfer_insts array. */
805 #define WORD_DATA 0x00
806 #define BYTE_DATA 0x10
807 #define HALF_DATA 0x20
808 #define SIGNED_DATA 0x40
809 #define LOAD_DATA 0x80
810
811 #define EMIT_INSTRUCTION(inst) \
812 FAIL_IF(push_inst(compiler, (inst)))
813
814 /* Condition: AL. */
815 #define EMIT_DATA_PROCESS_INS(opcode, set_flags, dst, src1, src2) \
816 (0xe0000000 | ((opcode) << 21) | (set_flags) | RD(dst) | RN(src1) | (src2))
817
818 static int emit_op(struct sljit_compiler *compiler, int op, int inp_flags,
819 int dst, sljit_w dstw,
820 int src1, sljit_w src1w,
821 int src2, sljit_w src2w);
822
823 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_enter(struct sljit_compiler *compiler, int args, int temporaries, int generals, int local_size)
824 {
825 int size;
826 sljit_uw push;
827
828 CHECK_ERROR();
829 check_sljit_emit_enter(compiler, args, temporaries, generals, local_size);
830
831 compiler->temporaries = temporaries;
832 compiler->generals = generals;
833
834 /* Push general registers, temporary registers
835 stmdb sp!, {..., lr} */
836 push = PUSH | (1 << 14);
837 if (temporaries >= 5)
838 push |= 1 << 11;
839 if (temporaries >= 4)
840 push |= 1 << 10;
841 if (generals >= 5)
842 push |= 1 << 8;
843 if (generals >= 4)
844 push |= 1 << 7;
845 if (generals >= 3)
846 push |= 1 << 6;
847 if (generals >= 2)
848 push |= 1 << 5;
849 if (generals >= 1)
850 push |= 1 << 4;
851 EMIT_INSTRUCTION(push);
852
853 /* Stack must be aligned to 8 bytes: */
854 size = (1 + generals) * sizeof(sljit_uw);
855 if (temporaries >= 4)
856 size += (temporaries - 3) * sizeof(sljit_uw);
857 local_size += size;
858 local_size = (local_size + 7) & ~7;
859 local_size -= size;
860 compiler->local_size = local_size;
861 if (local_size > 0)
862 FAIL_IF(emit_op(compiler, SLJIT_SUB, ALLOW_IMM, SLJIT_LOCALS_REG, 0, SLJIT_LOCALS_REG, 0, SLJIT_IMM, local_size));
863
864 if (args >= 1)
865 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_GENERAL_REG1, SLJIT_UNUSED, RM(SLJIT_TEMPORARY_REG1)));
866 if (args >= 2)
867 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_GENERAL_REG2, SLJIT_UNUSED, RM(SLJIT_TEMPORARY_REG2)));
868 if (args >= 3)
869 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_GENERAL_REG3, SLJIT_UNUSED, RM(SLJIT_TEMPORARY_REG3)));
870
871 return SLJIT_SUCCESS;
872 }
873
874 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_context(struct sljit_compiler *compiler, int args, int temporaries, int generals, int local_size)
875 {
876 int size;
877
878 CHECK_ERROR_VOID();
879 check_sljit_set_context(compiler, args, temporaries, generals, local_size);
880
881 compiler->temporaries = temporaries;
882 compiler->generals = generals;
883
884 size = (1 + generals) * sizeof(sljit_uw);
885 if (temporaries >= 4)
886 size += (temporaries - 3) * sizeof(sljit_uw);
887 local_size += size;
888 local_size = (local_size + 7) & ~7;
889 local_size -= size;
890 compiler->local_size = local_size;
891 }
892
893 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_return(struct sljit_compiler *compiler, int src, sljit_w srcw)
894 {
895 sljit_uw pop;
896
897 CHECK_ERROR();
898 check_sljit_emit_return(compiler, src, srcw);
899
900 if (src != SLJIT_UNUSED && src != SLJIT_RETURN_REG)
901 FAIL_IF(emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, SLJIT_RETURN_REG, 0, TMP_REG1, 0, src, srcw));
902
903 if (compiler->local_size > 0)
904 FAIL_IF(emit_op(compiler, SLJIT_ADD, ALLOW_IMM, SLJIT_LOCALS_REG, 0, SLJIT_LOCALS_REG, 0, SLJIT_IMM, compiler->local_size));
905
906 pop = POP | (1 << 15);
907 /* Push general registers, temporary registers
908 ldmia sp!, {..., pc} */
909 if (compiler->temporaries >= 5)
910 pop |= 1 << 11;
911 if (compiler->temporaries >= 4)
912 pop |= 1 << 10;
913 if (compiler->generals >= 5)
914 pop |= 1 << 8;
915 if (compiler->generals >= 4)
916 pop |= 1 << 7;
917 if (compiler->generals >= 3)
918 pop |= 1 << 6;
919 if (compiler->generals >= 2)
920 pop |= 1 << 5;
921 if (compiler->generals >= 1)
922 pop |= 1 << 4;
923
924 return push_inst(compiler, pop);
925 }
926
927 /* --------------------------------------------------------------------- */
928 /* Operators */
929 /* --------------------------------------------------------------------- */
930
931 /* s/l - store/load (1 bit)
932 u/s - signed/unsigned (1 bit)
933 w/b/h/N - word/byte/half/NOT allowed (2 bit)
934 It contans 16 items, but not all are different. */
935
936 static sljit_w data_transfer_insts[16] = {
937 /* s u w */ 0xe5000000 /* str */,
938 /* s u b */ 0xe5400000 /* strb */,
939 /* s u h */ 0xe10000b0 /* strh */,
940 /* s u N */ 0x00000000 /* not allowed */,
941 /* s s w */ 0xe5000000 /* str */,
942 /* s s b */ 0xe5400000 /* strb */,
943 /* s s h */ 0xe10000b0 /* strh */,
944 /* s s N */ 0x00000000 /* not allowed */,
945
946 /* l u w */ 0xe5100000 /* ldr */,
947 /* l u b */ 0xe5500000 /* ldrb */,
948 /* l u h */ 0xe11000b0 /* ldrh */,
949 /* l u N */ 0x00000000 /* not allowed */,
950 /* l s w */ 0xe5100000 /* ldr */,
951 /* l s b */ 0xe11000d0 /* ldrsb */,
952 /* l s h */ 0xe11000f0 /* ldrsh */,
953 /* l s N */ 0x00000000 /* not allowed */,
954 };
955
956 #define EMIT_DATA_TRANSFER(type, add, wb, target, base1, base2) \
957 (data_transfer_insts[(type) >> 4] | ((add) << 23) | ((wb) << 21) | (reg_map[target] << 12) | (reg_map[base1] << 16) | (base2))
958 /* Normal ldr/str instruction.
959 Type2: ldrsb, ldrh, ldrsh */
960 #define IS_TYPE1_TRANSFER(type) \
961 (data_transfer_insts[(type) >> 4] & 0x04000000)
962 #define TYPE2_TRANSFER_IMM(imm) \
963 (((imm) & 0xf) | (((imm) & 0xf0) << 4) | (1 << 22))
964
965 /* flags: */
966 /* Arguments are swapped. */
967 #define ARGS_SWAPPED 0x01
968 /* Inverted immediate. */
969 #define INV_IMM 0x02
970 /* Source and destination is register. */
971 #define REG_DEST 0x04
972 #define REG_SOURCE 0x08
973 /* One instruction is enough. */
974 #define FAST_DEST 0x10
975 /* Multiple instructions are required. */
976 #define SLOW_DEST 0x20
977 /* SET_FLAGS must be (1 << 20) as it is also the value of S bit (can be used for optimization). */
978 #define SET_FLAGS (1 << 20)
979 /* dst: reg
980 src1: reg
981 src2: reg or imm (if allowed)
982 SRC2_IMM must be (1 << 25) as it is also the value of I bit (can be used for optimization). */
983 #define SRC2_IMM (1 << 25)
984
985 #define EMIT_DATA_PROCESS_INS_AND_RETURN(opcode) \
986 return push_inst(compiler, EMIT_DATA_PROCESS_INS(opcode, flags & SET_FLAGS, dst, src1, (src2 & SRC2_IMM) ? src2 : RM(src2)))
987
988 #define EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(opcode, dst, src1, src2) \
989 return push_inst(compiler, EMIT_DATA_PROCESS_INS(opcode, flags & SET_FLAGS, dst, src1, src2))
990
991 #define EMIT_SHIFT_INS_AND_RETURN(opcode) \
992 SLJIT_ASSERT(!(flags & INV_IMM) && !(src2 & SRC2_IMM)); \
993 if (compiler->shift_imm != 0x20) { \
994 SLJIT_ASSERT(src1 == TMP_REG1); \
995 SLJIT_ASSERT(!(flags & ARGS_SWAPPED)); \
996 if (compiler->shift_imm != 0) \
997 return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, flags & SET_FLAGS, dst, SLJIT_UNUSED, (compiler->shift_imm << 7) | (opcode << 5) | reg_map[src2])); \
998 return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, flags & SET_FLAGS, dst, SLJIT_UNUSED, reg_map[src2])); \
999 } \
1000 return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, flags & SET_FLAGS, dst, SLJIT_UNUSED, (reg_map[(flags & ARGS_SWAPPED) ? src1 : src2] << 8) | (opcode << 5) | 0x10 | ((flags & ARGS_SWAPPED) ? reg_map[src2] : reg_map[src1])));
1001
1002 static SLJIT_INLINE int emit_single_op(struct sljit_compiler *compiler, int op, int flags,
1003 int dst, int src1, int src2)
1004 {
1005 sljit_w mul_inst;
1006
1007 switch (GET_OPCODE(op)) {
1008 case SLJIT_ADD:
1009 SLJIT_ASSERT(!(flags & INV_IMM));
1010 EMIT_DATA_PROCESS_INS_AND_RETURN(ADD_DP);
1011
1012 case SLJIT_ADDC:
1013 SLJIT_ASSERT(!(flags & INV_IMM));
1014 EMIT_DATA_PROCESS_INS_AND_RETURN(ADC_DP);
1015
1016 case SLJIT_SUB:
1017 SLJIT_ASSERT(!(flags & INV_IMM));
1018 if (!(flags & ARGS_SWAPPED))
1019 EMIT_DATA_PROCESS_INS_AND_RETURN(SUB_DP);
1020 EMIT_DATA_PROCESS_INS_AND_RETURN(RSB_DP);
1021
1022 case SLJIT_SUBC:
1023 SLJIT_ASSERT(!(flags & INV_IMM));
1024 if (!(flags & ARGS_SWAPPED))
1025 EMIT_DATA_PROCESS_INS_AND_RETURN(SBC_DP);
1026 EMIT_DATA_PROCESS_INS_AND_RETURN(RSC_DP);
1027
1028 case SLJIT_MUL:
1029 SLJIT_ASSERT(!(flags & INV_IMM));
1030 SLJIT_ASSERT(!(src2 & SRC2_IMM));
1031 if (SLJIT_UNLIKELY(op & SLJIT_SET_O))
1032 mul_inst = SMULL | (reg_map[TMP_REG3] << 16) | (reg_map[dst] << 12);
1033 else
1034 mul_inst = MUL | (reg_map[dst] << 16);
1035
1036 if (dst != src2)
1037 FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src1] << 8) | reg_map[src2]));
1038 else if (dst != src1)
1039 FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src2] << 8) | reg_map[src1]));
1040 else {
1041 /* Rm and Rd must not be the same register. */
1042 SLJIT_ASSERT(dst != TMP_REG1);
1043 FAIL_IF(push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, reg_map[src2])));
1044 FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src2] << 8) | reg_map[TMP_REG1]));
1045 }
1046
1047 if (!(op & SLJIT_SET_O))
1048 return SLJIT_SUCCESS;
1049
1050 /* We need to use TMP_REG3. */
1051 compiler->cache_arg = 0;
1052 compiler->cache_argw = 0;
1053 /* cmp TMP_REG2, dst asr #31. */
1054 return push_inst(compiler, EMIT_DATA_PROCESS_INS(CMP_DP, SET_FLAGS, SLJIT_UNUSED, TMP_REG3, RM(dst) | 0xfc0));
1055
1056 case SLJIT_AND:
1057 if (!(flags & INV_IMM))
1058 EMIT_DATA_PROCESS_INS_AND_RETURN(AND_DP);
1059 EMIT_DATA_PROCESS_INS_AND_RETURN(BIC_DP);
1060
1061 case SLJIT_OR:
1062 SLJIT_ASSERT(!(flags & INV_IMM));
1063 EMIT_DATA_PROCESS_INS_AND_RETURN(ORR_DP);
1064
1065 case SLJIT_XOR:
1066 SLJIT_ASSERT(!(flags & INV_IMM));
1067 EMIT_DATA_PROCESS_INS_AND_RETURN(EOR_DP);
1068
1069 case SLJIT_SHL:
1070 EMIT_SHIFT_INS_AND_RETURN(0);
1071
1072 case SLJIT_LSHR:
1073 EMIT_SHIFT_INS_AND_RETURN(1);
1074
1075 case SLJIT_ASHR:
1076 EMIT_SHIFT_INS_AND_RETURN(2);
1077
1078 case SLJIT_MOV:
1079 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
1080 if (dst != src2) {
1081 if (src2 & SRC2_IMM) {
1082 if (flags & INV_IMM)
1083 EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
1084 EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
1085 }
1086 EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, reg_map[src2]);
1087 }
1088 return SLJIT_SUCCESS;
1089
1090 case SLJIT_MOV_UB:
1091 case SLJIT_MOV_SB:
1092 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
1093 if ((flags & (REG_DEST | REG_SOURCE)) == (REG_DEST | REG_SOURCE)) {
1094 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1095 if (op == SLJIT_MOV_UB)
1096 return push_inst(compiler, EMIT_DATA_PROCESS_INS(AND_DP, 0, dst, src2, SRC2_IMM | 0xff));
1097 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (24 << 7) | reg_map[src2]));
1098 return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (24 << 7) | (op == SLJIT_MOV_UB ? 0x20 : 0x40) | reg_map[dst]));
1099 #else
1100 return push_inst(compiler, (op == SLJIT_MOV_UB ? UXTB : SXTB) | RD(dst) | RM(src2));
1101 #endif
1102 }
1103 else if (dst != src2) {
1104 SLJIT_ASSERT(src2 & SRC2_IMM);
1105 if (flags & INV_IMM)
1106 EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
1107 EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
1108 }
1109 return SLJIT_SUCCESS;
1110
1111 case SLJIT_MOV_UH:
1112 case SLJIT_MOV_SH:
1113 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
1114 if ((flags & (REG_DEST | REG_SOURCE)) == (REG_DEST | REG_SOURCE)) {
1115 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1116 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (16 << 7) | reg_map[src2]));
1117 return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (16 << 7) | (op == SLJIT_MOV_UH ? 0x20 : 0x40) | reg_map[dst]));
1118 #else
1119 return push_inst(compiler, (op == SLJIT_MOV_UH ? UXTH : SXTH) | RD(dst) | RM(src2));
1120 #endif
1121 }
1122 else if (dst != src2) {
1123 SLJIT_ASSERT(src2 & SRC2_IMM);
1124 if (flags & INV_IMM)
1125 EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
1126 EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
1127 }
1128 return SLJIT_SUCCESS;
1129
1130 case SLJIT_NOT:
1131 if (src2 & SRC2_IMM) {
1132 if (flags & INV_IMM)
1133 EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
1134 EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
1135 }
1136 EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, RM(src2));
1137
1138 case SLJIT_CLZ:
1139 SLJIT_ASSERT(!(flags & INV_IMM));
1140 SLJIT_ASSERT(!(src2 & SRC2_IMM));
1141 FAIL_IF(push_inst(compiler, CLZ | RD(dst) | RM(src2)));
1142 if (flags & SET_FLAGS)
1143 EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(CMP_DP, SLJIT_UNUSED, dst, SRC2_IMM);
1144 return SLJIT_SUCCESS;
1145 }
1146 SLJIT_ASSERT_STOP();
1147 return SLJIT_SUCCESS;
1148 }
1149
1150 #undef EMIT_DATA_PROCESS_INS_AND_RETURN
1151 #undef EMIT_FULL_DATA_PROCESS_INS_AND_RETURN
1152 #undef EMIT_SHIFT_INS_AND_RETURN
1153
1154 /* Tests whether the immediate can be stored in the 12 bit imm field.
1155 Returns with 0 if not possible. */
1156 static sljit_uw get_immediate(sljit_uw imm)
1157 {
1158 int rol;
1159
1160 if (imm <= 0xff)
1161 return SRC2_IMM | imm;
1162
1163 if (!(imm & 0xff000000)) {
1164 imm <<= 8;
1165 rol = 8;
1166 }
1167 else {
1168 imm = (imm << 24) | (imm >> 8);
1169 rol = 0;
1170 }
1171
1172 if (!(imm & 0xff000000)) {
1173 imm <<= 8;
1174 rol += 4;
1175 }
1176
1177 if (!(imm & 0xf0000000)) {
1178 imm <<= 4;
1179 rol += 2;
1180 }
1181
1182 if (!(imm & 0xc0000000)) {
1183 imm <<= 2;
1184 rol += 1;
1185 }
1186
1187 if (!(imm & 0x00ffffff))
1188 return SRC2_IMM | (imm >> 24) | (rol << 8);
1189 else
1190 return 0;
1191 }
1192
1193 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1194 static int generate_int(struct sljit_compiler *compiler, int reg, sljit_uw imm, int positive)
1195 {
1196 sljit_uw mask;
1197 sljit_uw imm1;
1198 sljit_uw imm2;
1199 int rol;
1200
1201 /* Step1: Search a zero byte (8 continous zero bit). */
1202 mask = 0xff000000;
1203 rol = 8;
1204 while(1) {
1205 if (!(imm & mask)) {
1206 /* Rol imm by rol. */
1207 imm = (imm << rol) | (imm >> (32 - rol));
1208 /* Calculate arm rol. */
1209 rol = 4 + (rol >> 1);
1210 break;
1211 }
1212 rol += 2;
1213 mask >>= 2;
1214 if (mask & 0x3) {
1215 /* rol by 8. */
1216 imm = (imm << 8) | (imm >> 24);
1217 mask = 0xff00;
1218 rol = 24;
1219 while (1) {
1220 if (!(imm & mask)) {
1221 /* Rol imm by rol. */
1222 imm = (imm << rol) | (imm >> (32 - rol));
1223 /* Calculate arm rol. */
1224 rol = (rol >> 1) - 8;
1225 break;
1226 }
1227 rol += 2;
1228 mask >>= 2;
1229 if (mask & 0x3)
1230 return 0;
1231 }
1232 break;
1233 }
1234 }
1235
1236 /* The low 8 bit must be zero. */
1237 SLJIT_ASSERT(!(imm & 0xff));
1238
1239 if (!(imm & 0xff000000)) {
1240 imm1 = SRC2_IMM | ((imm >> 16) & 0xff) | (((rol + 4) & 0xf) << 8);
1241 imm2 = SRC2_IMM | ((imm >> 8) & 0xff) | (((rol + 8) & 0xf) << 8);
1242 }
1243 else if (imm & 0xc0000000) {
1244 imm1 = SRC2_IMM | ((imm >> 24) & 0xff) | ((rol & 0xf) << 8);
1245 imm <<= 8;
1246 rol += 4;
1247
1248 if (!(imm & 0xff000000)) {
1249 imm <<= 8;
1250 rol += 4;
1251 }
1252
1253 if (!(imm & 0xf0000000)) {
1254 imm <<= 4;
1255 rol += 2;
1256 }
1257
1258 if (!(imm & 0xc0000000)) {
1259 imm <<= 2;
1260 rol += 1;
1261 }
1262
1263 if (!(imm & 0x00ffffff))
1264 imm2 = SRC2_IMM | (imm >> 24) | ((rol & 0xf) << 8);
1265 else
1266 return 0;
1267 }
1268 else {
1269 if (!(imm & 0xf0000000)) {
1270 imm <<= 4;
1271 rol += 2;
1272 }
1273
1274 if (!(imm & 0xc0000000)) {
1275 imm <<= 2;
1276 rol += 1;
1277 }
1278
1279 imm1 = SRC2_IMM | ((imm >> 24) & 0xff) | ((rol & 0xf) << 8);
1280 imm <<= 8;
1281 rol += 4;
1282
1283 if (!(imm & 0xf0000000)) {
1284 imm <<= 4;
1285 rol += 2;
1286 }
1287
1288 if (!(imm & 0xc0000000)) {
1289 imm <<= 2;
1290 rol += 1;
1291 }
1292
1293 if (!(imm & 0x00ffffff))
1294 imm2 = SRC2_IMM | (imm >> 24) | ((rol & 0xf) << 8);
1295 else
1296 return 0;
1297 }
1298
1299 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(positive ? MOV_DP : MVN_DP, 0, reg, SLJIT_UNUSED, imm1));
1300 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(positive ? ORR_DP : BIC_DP, 0, reg, reg, imm2));
1301 return 1;
1302 }
1303 #endif
1304
1305 static int load_immediate(struct sljit_compiler *compiler, int reg, sljit_uw imm)
1306 {
1307 sljit_uw tmp;
1308
1309 #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
1310 if (!(imm & ~0xffff))
1311 return push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | (imm & 0xfff));
1312 #endif
1313
1314 /* Create imm by 1 inst. */
1315 tmp = get_immediate(imm);
1316 if (tmp) {
1317 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, tmp));
1318 return SLJIT_SUCCESS;
1319 }
1320
1321 tmp = get_immediate(~imm);
1322 if (tmp) {
1323 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MVN_DP, 0, reg, SLJIT_UNUSED, tmp));
1324 return SLJIT_SUCCESS;
1325 }
1326
1327 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1328 /* Create imm by 2 inst. */
1329 FAIL_IF(generate_int(compiler, reg, imm, 1));
1330 FAIL_IF(generate_int(compiler, reg, ~imm, 0));
1331
1332 /* Load integer. */
1333 return push_inst_with_literal(compiler, EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0, reg, TMP_PC, 0), imm);
1334 #else
1335 return emit_imm(compiler, reg, imm);
1336 #endif
1337 }
1338
1339 /* Can perform an operation using at most 1 instruction. */
1340 static int getput_arg_fast(struct sljit_compiler *compiler, int inp_flags, int reg, int arg, sljit_w argw)
1341 {
1342 sljit_uw imm;
1343
1344 if (arg & SLJIT_IMM) {
1345 imm = get_immediate(argw);
1346 if (imm) {
1347 if (inp_flags & ARG_TEST)
1348 return 1;
1349 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, imm));
1350 return -1;
1351 }
1352 imm = get_immediate(~argw);
1353 if (imm) {
1354 if (inp_flags & ARG_TEST)
1355 return 1;
1356 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MVN_DP, 0, reg, SLJIT_UNUSED, imm));
1357 return -1;
1358 }
1359 return (inp_flags & ARG_TEST) ? SLJIT_SUCCESS : 0;
1360 }
1361
1362 SLJIT_ASSERT(arg & SLJIT_MEM);
1363
1364 /* Fast loads/stores. */
1365 if (arg & 0xf) {
1366 if (!(arg & 0xf0)) {
1367 if (IS_TYPE1_TRANSFER(inp_flags)) {
1368 if (argw >= 0 && argw <= 0xfff) {
1369 if (inp_flags & ARG_TEST)
1370 return 1;
1371 EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, argw));
1372 return -1;
1373 }
1374 if (argw < 0 && argw >= -0xfff) {
1375 if (inp_flags & ARG_TEST)
1376 return 1;
1377 EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 0, inp_flags & WRITE_BACK, reg, arg & 0xf, -argw));
1378 return -1;
1379 }
1380 }
1381 else {
1382 if (argw >= 0 && argw <= 0xff) {
1383 if (inp_flags & ARG_TEST)
1384 return 1;
1385 EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, TYPE2_TRANSFER_IMM(argw)));
1386 return -1;
1387 }
1388 if (argw < 0 && argw >= -0xff) {
1389 if (inp_flags & ARG_TEST)
1390 return 1;
1391 argw = -argw;
1392 EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 0, inp_flags & WRITE_BACK, reg, arg & 0xf, TYPE2_TRANSFER_IMM(argw)));
1393 return -1;
1394 }
1395 }
1396 }
1397 else if ((argw & 0x3) == 0 || IS_TYPE1_TRANSFER(inp_flags)) {
1398 if (inp_flags & ARG_TEST)
1399 return 1;
1400 EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf,
1401 RM((arg >> 4) & 0xf) | (IS_TYPE1_TRANSFER(inp_flags) ? SRC2_IMM : 0) | ((argw & 0x3) << 7)));
1402 return -1;
1403 }
1404 }
1405
1406 return (inp_flags & ARG_TEST) ? SLJIT_SUCCESS : 0;
1407 }
1408
1409 /* See getput_arg below.
1410 Note: can_cache is called only for binary operators. Those
1411 operators always uses word arguments without write back. */
1412 static int can_cache(int arg, sljit_w argw, int next_arg, sljit_w next_argw)
1413 {
1414 /* Immediate caching is not supported as it would be an operation on constant arguments. */
1415 if (arg & SLJIT_IMM)
1416 return 0;
1417
1418 /* Always a simple operation. */
1419 if (arg & 0xf0)
1420 return 0;
1421
1422 if (!(arg & 0xf)) {
1423 /* Immediate access. */
1424 if ((next_arg & SLJIT_MEM) && ((sljit_uw)argw - (sljit_uw)next_argw <= 0xfff || (sljit_uw)next_argw - (sljit_uw)argw <= 0xfff))
1425 return 1;
1426 return 0;
1427 }
1428
1429 if (argw <= 0xfffff && argw >= -0xfffff)
1430 return 0;
1431
1432 if (argw == next_argw && (next_arg & SLJIT_MEM))
1433 return 1;
1434
1435 if (arg == next_arg && ((sljit_uw)argw - (sljit_uw)next_argw <= 0xfff || (sljit_uw)next_argw - (sljit_uw)argw <= 0xfff))
1436 return 1;
1437
1438 return 0;
1439 }
1440
1441 #define GETPUT_ARG_DATA_TRANSFER(add, wb, target, base, imm) \
1442 if (max_delta & 0xf00) \
1443 FAIL_IF(push_inst(compiler, EMIT_DATA_TRANSFER(inp_flags, add, wb, target, base, imm))); \
1444 else \
1445 FAIL_IF(push_inst(compiler, EMIT_DATA_TRANSFER(inp_flags, add, wb, target, base, TYPE2_TRANSFER_IMM(imm))));
1446
1447 #define TEST_WRITE_BACK() \
1448 if (inp_flags & WRITE_BACK) { \
1449 tmp_r = arg & 0xf; \
1450 if (reg == tmp_r) { \
1451 /* This can only happen for stores */ \
1452 /* since ldr reg, [reg, ...]! has no meaning */ \
1453 SLJIT_ASSERT(!(inp_flags & LOAD_DATA)); \
1454 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(reg))); \
1455 reg = TMP_REG3; \
1456 } \
1457 }
1458
1459 /* Emit the necessary instructions. See can_cache above. */
1460 static int getput_arg(struct sljit_compiler *compiler, int inp_flags, int reg, int arg, sljit_w argw, int next_arg, sljit_w next_argw)
1461 {
1462 int tmp_r;
1463 sljit_w max_delta;
1464 sljit_w sign;
1465
1466 if (arg & SLJIT_IMM) {
1467 SLJIT_ASSERT(inp_flags & LOAD_DATA);
1468 return load_immediate(compiler, reg, argw);
1469 }
1470
1471 SLJIT_ASSERT(arg & SLJIT_MEM);
1472
1473 tmp_r = (inp_flags & LOAD_DATA) ? reg : TMP_REG3;
1474 max_delta = IS_TYPE1_TRANSFER(inp_flags) ? 0xfff : 0xff;
1475
1476 if ((arg & 0xf) == SLJIT_UNUSED) {
1477 /* Write back is not used. */
1478 if ((compiler->cache_arg & SLJIT_IMM) && (((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= (sljit_uw)max_delta || ((sljit_uw)compiler->cache_argw - (sljit_uw)argw) <= (sljit_uw)max_delta)) {
1479 if (((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= (sljit_uw)max_delta) {
1480 sign = 1;
1481 argw = argw - compiler->cache_argw;
1482 }
1483 else {
1484 sign = 0;
1485 argw = compiler->cache_argw - argw;
1486 }
1487
1488 if (max_delta & 0xf00) {
1489 EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, sign, 0, reg, TMP_REG3, argw));
1490 }
1491 else {
1492 EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, sign, 0, reg, TMP_REG3, TYPE2_TRANSFER_IMM(argw)));
1493 }
1494 return SLJIT_SUCCESS;
1495 }
1496
1497 /* With write back, we can create some sophisticated loads, but
1498 it is hard to decide whether we should convert downward (0s) or upward (1s). */
1499 if ((next_arg & SLJIT_MEM) && ((sljit_uw)argw - (sljit_uw)next_argw <= (sljit_uw)max_delta || (sljit_uw)next_argw - (sljit_uw)argw <= (sljit_uw)max_delta)) {
1500 SLJIT_ASSERT(inp_flags & LOAD_DATA);
1501
1502 compiler->cache_arg = SLJIT_IMM;
1503 compiler->cache_argw = argw;
1504 tmp_r = TMP_REG3;
1505 }
1506
1507 FAIL_IF(load_immediate(compiler, tmp_r, argw));
1508 GETPUT_ARG_DATA_TRANSFER(1, 0, reg, tmp_r, 0);
1509 return SLJIT_SUCCESS;
1510 }
1511
1512 /* Extended imm addressing for [reg+imm] format. */
1513 sign = (max_delta << 8) | 0xff;
1514 if (!(arg & 0xf0) && argw <= sign && argw >= -sign) {
1515 TEST_WRITE_BACK();
1516 if (argw >= 0) {
1517 sign = 1;
1518 }
1519 else {
1520 sign = 0;
1521 argw = -argw;
1522 }
1523
1524 /* Optimization: add is 0x4, sub is 0x2. Sign is 1 for add and 0 for sub. */
1525 if (max_delta & 0xf00)
1526 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(SUB_DP << sign, 0, tmp_r, arg & 0xf, SRC2_IMM | (argw >> 12) | 0xa00));
1527 else
1528 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(SUB_DP << sign, 0, tmp_r, arg & 0xf, SRC2_IMM | (argw >> 8) | 0xc00));
1529
1530 argw &= max_delta;
1531 GETPUT_ARG_DATA_TRANSFER(sign, inp_flags & WRITE_BACK, reg, tmp_r, argw);
1532 return SLJIT_SUCCESS;
1533 }
1534
1535 if (arg & 0xf0) {
1536 SLJIT_ASSERT((argw & 0x3) && !(max_delta & 0xf00));
1537 if (inp_flags & WRITE_BACK)
1538 tmp_r = arg & 0xf;
1539 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, tmp_r, arg & 0xf, RM((arg >> 4) & 0xf) | ((argw & 0x3) << 7)));
1540 EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, 0, reg, tmp_r, TYPE2_TRANSFER_IMM(0)));
1541 return SLJIT_SUCCESS;
1542 }
1543
1544 if (compiler->cache_arg == arg && ((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= (sljit_uw)max_delta) {
1545 SLJIT_ASSERT(!(inp_flags & WRITE_BACK));
1546 argw = argw - compiler->cache_argw;
1547 GETPUT_ARG_DATA_TRANSFER(1, 0, reg, TMP_REG3, argw);
1548 return SLJIT_SUCCESS;
1549 }
1550
1551 if (compiler->cache_arg == arg && ((sljit_uw)compiler->cache_argw - (sljit_uw)argw) <= (sljit_uw)max_delta) {
1552 SLJIT_ASSERT(!(inp_flags & WRITE_BACK));
1553 argw = compiler->cache_argw - argw;
1554 GETPUT_ARG_DATA_TRANSFER(0, 0, reg, TMP_REG3, argw);
1555 return SLJIT_SUCCESS;
1556 }
1557
1558 if ((compiler->cache_arg & SLJIT_IMM) && compiler->cache_argw == argw) {
1559 TEST_WRITE_BACK();
1560 EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, RM(TMP_REG3) | (max_delta & 0xf00 ? SRC2_IMM : 0)));
1561 return SLJIT_SUCCESS;
1562 }
1563
1564 if (argw == next_argw && (next_arg & SLJIT_MEM)) {
1565 SLJIT_ASSERT(inp_flags & LOAD_DATA);
1566 FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1567
1568 compiler->cache_arg = SLJIT_IMM;
1569 compiler->cache_argw = argw;
1570
1571 TEST_WRITE_BACK();
1572 EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, RM(TMP_REG3) | (max_delta & 0xf00 ? SRC2_IMM : 0)));
1573 return SLJIT_SUCCESS;
1574 }
1575
1576 if (arg == next_arg && !(inp_flags & WRITE_BACK) && ((sljit_uw)argw - (sljit_uw)next_argw <= (sljit_uw)max_delta || (sljit_uw)next_argw - (sljit_uw)argw <= (sljit_uw)max_delta)) {
1577 SLJIT_ASSERT(inp_flags & LOAD_DATA);
1578 FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1579 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG3, TMP_REG3, reg_map[arg & 0xf]));
1580
1581 compiler->cache_arg = arg;
1582 compiler->cache_argw = argw;
1583
1584 GETPUT_ARG_DATA_TRANSFER(1, 0, reg, TMP_REG3, 0);
1585 return SLJIT_SUCCESS;
1586 }
1587
1588 if ((arg & 0xf) == tmp_r) {
1589 compiler->cache_arg = SLJIT_IMM;
1590 compiler->cache_argw = argw;
1591 tmp_r = TMP_REG3;
1592 }
1593
1594 FAIL_IF(load_immediate(compiler, tmp_r, argw));
1595 EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, reg_map[tmp_r] | (max_delta & 0xf00 ? SRC2_IMM : 0)));
1596 return SLJIT_SUCCESS;
1597 }
1598
1599 static int emit_op(struct sljit_compiler *compiler, int op, int inp_flags,
1600 int dst, sljit_w dstw,
1601 int src1, sljit_w src1w,
1602 int src2, sljit_w src2w)
1603 {
1604 /* arg1 goes to TMP_REG1 or src reg
1605 arg2 goes to TMP_REG2, imm or src reg
1606 TMP_REG3 can be used for caching
1607 result goes to TMP_REG2, so put result can use TMP_REG1 and TMP_REG3. */
1608
1609 /* We prefers register and simple consts. */
1610 int dst_r;
1611 int src1_r;
1612 int src2_r = 0;
1613 int sugg_src2_r = TMP_REG2;
1614 int flags = GET_FLAGS(op) ? SET_FLAGS : 0;
1615
1616 compiler->cache_arg = 0;
1617 compiler->cache_argw = 0;
1618
1619 /* Destination check. */
1620 if (dst >= SLJIT_TEMPORARY_REG1 && dst <= TMP_REG3) {
1621 dst_r = dst;
1622 flags |= REG_DEST;
1623 if (op >= SLJIT_MOV && op <= SLJIT_MOVU_SI)
1624 sugg_src2_r = dst_r;
1625 }
1626 else if (dst == SLJIT_UNUSED) {
1627 if (op >= SLJIT_MOV && op <= SLJIT_MOVU_SI && !(src2 & SLJIT_MEM))
1628 return SLJIT_SUCCESS;
1629 dst_r = TMP_REG2;
1630 }
1631 else {
1632 SLJIT_ASSERT(dst & SLJIT_MEM);
1633 if (getput_arg_fast(compiler, inp_flags | ARG_TEST, TMP_REG2, dst, dstw)) {
1634 flags |= FAST_DEST;
1635 dst_r = TMP_REG2;
1636 }
1637 else {
1638 flags |= SLOW_DEST;
1639 dst_r = 0;
1640 }
1641 }
1642
1643 /* Source 1. */
1644 if (src1 >= SLJIT_TEMPORARY_REG1 && src1 <= TMP_REG3)
1645 src1_r = src1;
1646 else if (src2 >= SLJIT_TEMPORARY_REG1 && src2 <= TMP_REG3) {
1647 flags |= ARGS_SWAPPED;
1648 src1_r = src2;
1649 src2 = src1;
1650 src2w = src1w;
1651 }
1652 else {
1653 if ((inp_flags & ALLOW_ANY_IMM) && (src1 & SLJIT_IMM)) {
1654 /* The second check will generate a hit. */
1655 src2_r = get_immediate(src1w);
1656 if (src2_r) {
1657 flags |= ARGS_SWAPPED;
1658 src1 = src2;
1659 src1w = src2w;
1660 }
1661 if (inp_flags & ALLOW_INV_IMM) {
1662 src2_r = get_immediate(~src1w);
1663 if (src2_r) {
1664 flags |= ARGS_SWAPPED | INV_IMM;
1665 src1 = src2;
1666 src1w = src2w;
1667 }
1668 }
1669 }
1670
1671 src1_r = 0;
1672 if (getput_arg_fast(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w)) {
1673 FAIL_IF(compiler->error);
1674 src1_r = TMP_REG1;
1675 }
1676 }
1677
1678 /* Source 2. */
1679 if (src2_r == 0) {
1680 if (src2 >= SLJIT_TEMPORARY_REG1 && src2 <= TMP_REG3) {
1681 src2_r = src2;
1682 flags |= REG_SOURCE;
1683 if (!(flags & REG_DEST) && op >= SLJIT_MOV && op <= SLJIT_MOVU_SI)
1684 dst_r = src2_r;
1685 }
1686 else do { /* do { } while(0) is used because of breaks. */
1687 if ((inp_flags & ALLOW_ANY_IMM) && (src2 & SLJIT_IMM)) {
1688 src2_r = get_immediate(src2w);
1689 if (src2_r)
1690 break;
1691 if (inp_flags & ALLOW_INV_IMM) {
1692 src2_r = get_immediate(~src2w);
1693 if (src2_r) {
1694 flags |= INV_IMM;
1695 break;
1696 }
1697 }
1698 }
1699
1700 /* src2_r is 0. */
1701 if (getput_arg_fast(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w)) {
1702 FAIL_IF(compiler->error);
1703 src2_r = sugg_src2_r;
1704 }
1705 } while (0);
1706 }
1707
1708 /* src1_r, src2_r and dst_r can be zero (=unprocessed) or non-zero.
1709 If they are zero, they must not be registers. */
1710 if (src1_r == 0 && src2_r == 0 && dst_r == 0) {
1711 if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
1712 SLJIT_ASSERT(!(flags & ARGS_SWAPPED));
1713 flags |= ARGS_SWAPPED;
1714 FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src2, src2w, src1, src1w));
1715 FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG2, src1, src1w, dst, dstw));
1716 }
1717 else {
1718 FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, src2, src2w));
1719 FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG2, src2, src2w, dst, dstw));
1720 }
1721 src1_r = TMP_REG1;
1722 src2_r = TMP_REG2;
1723 }
1724 else if (src1_r == 0 && src2_r == 0) {
1725 FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, src2, src2w));
1726 src1_r = TMP_REG1;
1727 }
1728 else if (src1_r == 0 && dst_r == 0) {
1729 FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, dst, dstw));
1730 src1_r = TMP_REG1;
1731 }
1732 else if (src2_r == 0 && dst_r == 0) {
1733 FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w, dst, dstw));
1734 src2_r = sugg_src2_r;
1735 }
1736
1737 if (dst_r == 0)
1738 dst_r = TMP_REG2;
1739
1740 if (src1_r == 0) {
1741 FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, 0, 0));
1742 src1_r = TMP_REG1;
1743 }
1744
1745 if (src2_r == 0) {
1746 FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w, 0, 0));
1747 src2_r = sugg_src2_r;
1748 }
1749
1750 FAIL_IF(emit_single_op(compiler, op, flags, dst_r, src1_r, src2_r));
1751
1752 if (flags & (FAST_DEST | SLOW_DEST)) {
1753 if (flags & FAST_DEST)
1754 FAIL_IF(getput_arg_fast(compiler, inp_flags, dst_r, dst, dstw));
1755 else
1756 FAIL_IF(getput_arg(compiler, inp_flags, dst_r, dst, dstw, 0, 0));
1757 }
1758 return SLJIT_SUCCESS;
1759 }
1760
1761 #ifdef __cplusplus
1762 extern "C" {
1763 #endif
1764
1765 #if defined(__GNUC__)
1766 extern unsigned int __aeabi_uidivmod(unsigned numerator, unsigned denominator);
1767 extern unsigned int __aeabi_idivmod(unsigned numerator, unsigned denominator);
1768 #else
1769 #error "Software divmod functions are needed"
1770 #endif
1771
1772 #ifdef __cplusplus
1773 }
1774 #endif
1775
1776 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op0(struct sljit_compiler *compiler, int op)
1777 {
1778 CHECK_ERROR();
1779 check_sljit_emit_op0(compiler, op);
1780
1781 op = GET_OPCODE(op);
1782 switch (op) {
1783 case SLJIT_BREAKPOINT:
1784 EMIT_INSTRUCTION(BKPT);
1785 break;
1786 case SLJIT_NOP:
1787 EMIT_INSTRUCTION(NOP);
1788 break;
1789 case SLJIT_UMUL:
1790 case SLJIT_SMUL:
1791 #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
1792 return push_inst(compiler, (op == SLJIT_UMUL ? UMULL : SMULL)
1793 | (reg_map[SLJIT_TEMPORARY_REG2] << 16)
1794 | (reg_map[SLJIT_TEMPORARY_REG1] << 12)
1795 | (reg_map[SLJIT_TEMPORARY_REG1] << 8)
1796 | reg_map[SLJIT_TEMPORARY_REG2]);
1797 #else
1798 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, RM(SLJIT_TEMPORARY_REG2)));
1799 return push_inst(compiler, (op == SLJIT_UMUL ? UMULL : SMULL)
1800 | (reg_map[SLJIT_TEMPORARY_REG2] << 16)
1801 | (reg_map[SLJIT_TEMPORARY_REG1] << 12)
1802 | (reg_map[SLJIT_TEMPORARY_REG1] << 8)
1803 | reg_map[TMP_REG1]);
1804 #endif
1805 case SLJIT_UDIV:
1806 case SLJIT_SDIV:
1807 if (compiler->temporaries >= 3)
1808 EMIT_INSTRUCTION(0xe52d2008 /* str r2, [sp, #-8]! */);
1809 #if defined(__GNUC__)
1810 FAIL_IF(sljit_emit_ijump(compiler, SLJIT_FAST_CALL, SLJIT_IMM,
1811 (op == SLJIT_UDIV ? SLJIT_FUNC_OFFSET(__aeabi_uidivmod) : SLJIT_FUNC_OFFSET(__aeabi_idivmod))));
1812 #else
1813 #error "Software divmod functions are needed"
1814 #endif
1815 if (compiler->temporaries >= 3)
1816 return push_inst(compiler, 0xe49d2008 /* ldr r2, [sp], #8 */);
1817 return SLJIT_SUCCESS;
1818 }
1819
1820 return SLJIT_SUCCESS;
1821 }
1822
1823 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op1(struct sljit_compiler *compiler, int op,
1824 int dst, sljit_w dstw,
1825 int src, sljit_w srcw)
1826 {
1827 CHECK_ERROR();
1828 check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw);
1829
1830 switch (GET_OPCODE(op)) {
1831 case SLJIT_MOV:
1832 case SLJIT_MOV_UI:
1833 case SLJIT_MOV_SI:
1834 return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, src, srcw);
1835
1836 case SLJIT_MOV_UB:
1837 return emit_op(compiler, SLJIT_MOV_UB, ALLOW_ANY_IMM | BYTE_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned char)srcw : srcw);
1838
1839 case SLJIT_MOV_SB:
1840 return emit_op(compiler, SLJIT_MOV_SB, ALLOW_ANY_IMM | SIGNED_DATA | BYTE_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed char)srcw : srcw);
1841
1842 case SLJIT_MOV_UH:
1843 return emit_op(compiler, SLJIT_MOV_UH, ALLOW_ANY_IMM | HALF_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned short)srcw : srcw);
1844
1845 case SLJIT_MOV_SH:
1846 return emit_op(compiler, SLJIT_MOV_SH, ALLOW_ANY_IMM | SIGNED_DATA | HALF_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed short)srcw : srcw);
1847
1848 case SLJIT_MOVU:
1849 case SLJIT_MOVU_UI:
1850 case SLJIT_MOVU_SI:
1851 return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1852
1853 case SLJIT_MOVU_UB:
1854 return emit_op(compiler, SLJIT_MOV_UB, ALLOW_ANY_IMM | BYTE_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned char)srcw : srcw);
1855
1856 case SLJIT_MOVU_SB:
1857 return emit_op(compiler, SLJIT_MOV_SB, ALLOW_ANY_IMM | SIGNED_DATA | BYTE_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed char)srcw : srcw);
1858
1859 case SLJIT_MOVU_UH:
1860 return emit_op(compiler, SLJIT_MOV_UH, ALLOW_ANY_IMM | HALF_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned short)srcw : srcw);
1861
1862 case SLJIT_MOVU_SH:
1863 return emit_op(compiler, SLJIT_MOV_SH, ALLOW_ANY_IMM | SIGNED_DATA | HALF_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed short)srcw : srcw);
1864
1865 case SLJIT_NOT:
1866 return emit_op(compiler, op, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, src, srcw);
1867
1868 case SLJIT_NEG:
1869 #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) || (defined SLJIT_DEBUG && SLJIT_DEBUG)
1870 compiler->skip_checks = 1;
1871 #endif
1872 return sljit_emit_op2(compiler, SLJIT_SUB | GET_FLAGS(op), dst, dstw, SLJIT_IMM, 0, src, srcw);
1873
1874 case SLJIT_CLZ:
1875 return emit_op(compiler, op, 0, dst, dstw, TMP_REG1, 0, src, srcw);
1876 }
1877
1878 return SLJIT_SUCCESS;
1879 }
1880
1881 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op2(struct sljit_compiler *compiler, int op,
1882 int dst, sljit_w dstw,
1883 int src1, sljit_w src1w,
1884 int src2, sljit_w src2w)
1885 {
1886 CHECK_ERROR();
1887 check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w);
1888
1889 switch (GET_OPCODE(op)) {
1890 case SLJIT_ADD:
1891 case SLJIT_ADDC:
1892 case SLJIT_SUB:
1893 case SLJIT_SUBC:
1894 case SLJIT_OR:
1895 case SLJIT_XOR:
1896 return emit_op(compiler, op, ALLOW_IMM, dst, dstw, src1, src1w, src2, src2w);
1897
1898 case SLJIT_MUL:
1899 return emit_op(compiler, op, 0, dst, dstw, src1, src1w, src2, src2w);
1900
1901 case SLJIT_AND:
1902 return emit_op(compiler, op, ALLOW_ANY_IMM, dst, dstw, src1, src1w, src2, src2w);
1903
1904 case SLJIT_SHL:
1905 case SLJIT_LSHR:
1906 case SLJIT_ASHR:
1907 if (src2 & SLJIT_IMM) {
1908 compiler->shift_imm = src2w & 0x1f;
1909 return emit_op(compiler, op, 0, dst, dstw, TMP_REG1, 0, src1, src1w);
1910 }
1911 else {
1912 compiler->shift_imm = 0x20;
1913 return emit_op(compiler, op, 0, dst, dstw, src1, src1w, src2, src2w);
1914 }
1915 }
1916
1917 return SLJIT_SUCCESS;
1918 }
1919
1920 SLJIT_API_FUNC_ATTRIBUTE int sljit_get_register_index(int reg)
1921 {
1922 check_sljit_get_register_index(reg);
1923 return reg_map[reg];
1924 }
1925
1926 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op_custom(struct sljit_compiler *compiler,
1927 void *instruction, int size)
1928 {
1929 CHECK_ERROR();
1930 check_sljit_emit_op_custom(compiler, instruction, size);
1931 SLJIT_ASSERT(size == 4);
1932
1933 return push_inst(compiler, *(sljit_uw*)instruction);
1934 }
1935
1936 /* --------------------------------------------------------------------- */
1937 /* Floating point operators */
1938 /* --------------------------------------------------------------------- */
1939
1940 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1941
1942 /* 0 - no fpu
1943 1 - vfp */
1944 static int arm_fpu_type = -1;
1945
1946 static void init_compiler()
1947 {
1948 if (arm_fpu_type != -1)
1949 return;
1950
1951 /* TODO: Only the OS can help to determine the correct fpu type. */
1952 arm_fpu_type = 1;
1953 }
1954
1955 SLJIT_API_FUNC_ATTRIBUTE int sljit_is_fpu_available(void)
1956 {
1957 if (arm_fpu_type == -1)
1958 init_compiler();
1959 return arm_fpu_type;
1960 }
1961
1962 #else
1963
1964 #define arm_fpu_type 1
1965
1966 SLJIT_API_FUNC_ATTRIBUTE int sljit_is_fpu_available(void)
1967 {
1968 /* Always available. */
1969 return 1;
1970 }
1971
1972 #endif
1973
1974 #define EMIT_FPU_DATA_TRANSFER(add, load, base, freg, offs) \
1975 (VSTR | ((add) << 23) | ((load) << 20) | (reg_map[base] << 16) | (freg << 12) | (offs))
1976 #define EMIT_FPU_OPERATION(opcode, dst, src1, src2) \
1977 ((opcode) | ((dst) << 12) | (src1) | ((src2) << 16))
1978
1979 static int emit_fpu_data_transfer(struct sljit_compiler *compiler, int fpu_reg, int load, int arg, sljit_w argw)
1980 {
1981 SLJIT_ASSERT(arg & SLJIT_MEM);
1982
1983 /* Fast loads and stores. */
1984 if ((arg & 0xf) && !(arg & 0xf0) && (argw & 0x3) == 0) {
1985 if (argw >= 0 && argw <= 0x3ff) {
1986 EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, arg & 0xf, fpu_reg, argw >> 2));
1987 return SLJIT_SUCCESS;
1988 }
1989 if (argw < 0 && argw >= -0x3ff) {
1990 EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(0, load, arg & 0xf, fpu_reg, (-argw) >> 2));
1991 return SLJIT_SUCCESS;
1992 }
1993 if (argw >= 0 && argw <= 0x3ffff) {
1994 SLJIT_ASSERT(get_immediate(argw & 0x3fc00));
1995 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG1, arg & 0xf, get_immediate(argw & 0x3fc00)));
1996 argw &= 0x3ff;
1997 EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG1, fpu_reg, argw >> 2));
1998 return SLJIT_SUCCESS;
1999 }
2000 if (argw < 0 && argw >= -0x3ffff) {
2001 argw = -argw;
2002 SLJIT_ASSERT(get_immediate(argw & 0x3fc00));
2003 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(SUB_DP, 0, TMP_REG1, arg & 0xf, get_immediate(argw & 0x3fc00)));
2004 argw &= 0x3ff;
2005 EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(0, load, TMP_REG1, fpu_reg, argw >> 2));
2006 return SLJIT_SUCCESS;
2007 }
2008 }
2009
2010 if (arg & 0xf0) {
2011 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG1, arg & 0xf, RM((arg >> 4) & 0xf) | ((argw & 0x3) << 7)));
2012 EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG1, fpu_reg, 0));
2013 return SLJIT_SUCCESS;
2014 }
2015
2016 if (compiler->cache_arg == arg && ((argw - compiler->cache_argw) & 0x3) == 0) {
2017 if (((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= 0x3ff) {
2018 EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG3, fpu_reg, (argw - compiler->cache_argw) >> 2));
2019 return SLJIT_SUCCESS;
2020 }
2021 if (((sljit_uw)compiler->cache_argw - (sljit_uw)argw) <= 0x3ff) {
2022 EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(0, load, TMP_REG3, fpu_reg, (compiler->cache_argw - argw) >> 2));
2023 return SLJIT_SUCCESS;
2024 }
2025 }
2026
2027 compiler->cache_arg = arg;
2028 compiler->cache_argw = argw;
2029 if (arg & 0xf) {
2030 FAIL_IF(load_immediate(compiler, TMP_REG1, argw));
2031 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG3, arg & 0xf, reg_map[TMP_REG1]));
2032 }
2033 else
2034 FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
2035
2036 EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG3, fpu_reg, 0));
2037 return SLJIT_SUCCESS;
2038 }
2039
2040 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fop1(struct sljit_compiler *compiler, int op,
2041 int dst, sljit_w dstw,
2042 int src, sljit_w srcw)
2043 {
2044 int dst_freg;
2045
2046 CHECK_ERROR();
2047 check_sljit_emit_fop1(compiler, op, dst, dstw, src, srcw);
2048
2049 compiler->cache_arg = 0;
2050 compiler->cache_argw = 0;
2051
2052 if (GET_OPCODE(op) == SLJIT_FCMP) {
2053 if (dst > SLJIT_FLOAT_REG4) {
2054 FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG1, 1, dst, dstw));
2055 dst = TMP_FREG1;
2056 }
2057 if (src > SLJIT_FLOAT_REG4) {
2058 FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG2, 1, src, srcw));
2059 src = TMP_FREG2;
2060 }
2061 EMIT_INSTRUCTION(VCMP_F64 | (dst << 12) | src);
2062 EMIT_INSTRUCTION(VMRS);
2063 return SLJIT_SUCCESS;
2064 }
2065
2066 dst_freg = (dst > SLJIT_FLOAT_REG4) ? TMP_FREG1 : dst;
2067
2068 if (src > SLJIT_FLOAT_REG4) {
2069 FAIL_IF(emit_fpu_data_transfer(compiler, dst_freg, 1, src, srcw));
2070 src = dst_freg;
2071 }
2072
2073 switch (op) {
2074 case SLJIT_FMOV:
2075 if (src != dst_freg && dst_freg != TMP_FREG1)
2076 EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VMOV_F64, dst_freg, src, 0));
2077 break;
2078 case SLJIT_FNEG:
2079 EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VNEG_F64, dst_freg, src, 0));
2080 break;
2081 case SLJIT_FABS:
2082 EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VABS_F64, dst_freg, src, 0));
2083 break;
2084 }
2085
2086 if (dst_freg == TMP_FREG1)
2087 FAIL_IF(emit_fpu_data_transfer(compiler, src, 0, dst, dstw));
2088
2089 return SLJIT_SUCCESS;
2090 }
2091
2092 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fop2(struct sljit_compiler *compiler, int op,
2093 int dst, sljit_w dstw,
2094 int src1, sljit_w src1w,
2095 int src2, sljit_w src2w)
2096 {
2097 int dst_freg;
2098
2099 CHECK_ERROR();
2100 check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w);
2101
2102 compiler->cache_arg = 0;
2103 compiler->cache_argw = 0;
2104
2105 dst_freg = (dst > SLJIT_FLOAT_REG4) ? TMP_FREG1 : dst;
2106
2107 if (src2 > SLJIT_FLOAT_REG4) {
2108 FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG2, 1, src2, src2w));
2109 src2 = TMP_FREG2;
2110 }
2111
2112 if (src1 > SLJIT_FLOAT_REG4) {
2113 FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG1, 1, src1, src1w));
2114 src1 = TMP_FREG1;
2115 }
2116
2117 switch (op) {
2118 case SLJIT_FADD:
2119 EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VADD_F64, dst_freg, src2, src1));
2120 break;
2121
2122 case SLJIT_FSUB:
2123 EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VSUB_F64, dst_freg, src2, src1));
2124 break;
2125
2126 case SLJIT_FMUL:
2127 EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VMUL_F64, dst_freg, src2, src1));
2128 break;
2129
2130 case SLJIT_FDIV:
2131 EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VDIV_F64, dst_freg, src2, src1));
2132 break;
2133 }
2134
2135 if (dst_freg == TMP_FREG1)
2136 FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG1, 0, dst, dstw));
2137
2138 return SLJIT_SUCCESS;
2139 }
2140
2141 /* --------------------------------------------------------------------- */
2142 /* Other instructions */
2143 /* --------------------------------------------------------------------- */
2144
2145 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fast_enter(struct sljit_compiler *compiler, int dst, sljit_w dstw, int args, int temporaries, int generals, int local_size)
2146 {
2147 int size;
2148
2149 CHECK_ERROR();
2150 check_sljit_emit_fast_enter(compiler, dst, dstw, args, temporaries, generals, local_size);
2151
2152 compiler->temporaries = temporaries;
2153 compiler->generals = generals;
2154
2155 size = (1 + generals) * sizeof(sljit_uw);
2156 if (temporaries >= 4)
2157 size += (temporaries - 3) * sizeof(sljit_uw);
2158 local_size += size;
2159 local_size = (local_size + 7) & ~7;
2160 local_size -= size;
2161 compiler->local_size = local_size;
2162
2163 if (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS)
2164 return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, RM(TMP_REG3)));
2165 else if (dst & SLJIT_MEM) {
2166 if (getput_arg_fast(compiler, WORD_DATA, TMP_REG3, dst, dstw))
2167 return compiler->error;
2168 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG2, SLJIT_UNUSED, RM(TMP_REG3)));
2169 compiler->cache_arg = 0;
2170 compiler->cache_argw = 0;
2171 return getput_arg(compiler, WORD_DATA, TMP_REG2, dst, dstw, 0, 0);
2172 }
2173
2174 return SLJIT_SUCCESS;
2175 }
2176
2177 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fast_return(struct sljit_compiler *compiler, int src, sljit_w srcw)
2178 {
2179 CHECK_ERROR();
2180 check_sljit_emit_fast_return(compiler, src, srcw);
2181
2182 if (src >= SLJIT_TEMPORARY_REG1 && src <= SLJIT_NO_REGISTERS)
2183 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(src)));
2184 else if (src & SLJIT_MEM) {
2185 if (getput_arg_fast(compiler, WORD_DATA | LOAD_DATA, TMP_REG3, src, srcw))
2186 FAIL_IF(compiler->error);
2187 else {
2188 compiler->cache_arg = 0;
2189 compiler->cache_argw = 0;
2190 FAIL_IF(getput_arg(compiler, WORD_DATA | LOAD_DATA, TMP_REG2, src, srcw, 0, 0));
2191 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(TMP_REG2)));
2192 }
2193 }
2194 else if (src & SLJIT_IMM)
2195 FAIL_IF(load_immediate(compiler, TMP_REG3, srcw));
2196 return push_inst(compiler, BLX | RM(TMP_REG3));
2197 }
2198
2199 /* --------------------------------------------------------------------- */
2200 /* Conditional instructions */
2201 /* --------------------------------------------------------------------- */
2202
2203 static sljit_uw get_cc(int type)
2204 {
2205 switch (type) {
2206 case SLJIT_C_EQUAL:
2207 case SLJIT_C_MUL_NOT_OVERFLOW:
2208 case SLJIT_C_FLOAT_EQUAL:
2209 return 0x00000000;
2210
2211 case SLJIT_C_NOT_EQUAL:
2212 case SLJIT_C_MUL_OVERFLOW:
2213 case SLJIT_C_FLOAT_NOT_EQUAL:
2214 return 0x10000000;
2215
2216 case SLJIT_C_LESS:
2217 case SLJIT_C_FLOAT_LESS:
2218 return 0x30000000;
2219
2220 case SLJIT_C_GREATER_EQUAL:
2221 case SLJIT_C_FLOAT_GREATER_EQUAL:
2222 return 0x20000000;
2223
2224 case SLJIT_C_GREATER:
2225 case SLJIT_C_FLOAT_GREATER:
2226 return 0x80000000;
2227
2228 case SLJIT_C_LESS_EQUAL:
2229 case SLJIT_C_FLOAT_LESS_EQUAL:
2230 return 0x90000000;
2231
2232 case SLJIT_C_SIG_LESS:
2233 return 0xb0000000;
2234
2235 case SLJIT_C_SIG_GREATER_EQUAL:
2236 return 0xa0000000;
2237
2238 case SLJIT_C_SIG_GREATER:
2239 return 0xc0000000;
2240
2241 case SLJIT_C_SIG_LESS_EQUAL:
2242 return 0xd0000000;
2243
2244 case SLJIT_C_OVERFLOW:
2245 case SLJIT_C_FLOAT_NAN:
2246 return 0x60000000;
2247
2248 case SLJIT_C_NOT_OVERFLOW:
2249 case SLJIT_C_FLOAT_NOT_NAN:
2250 return 0x70000000;
2251
2252 default: /* SLJIT_JUMP */
2253 return 0xe0000000;
2254 }
2255 }
2256
2257 SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler)
2258 {
2259 struct sljit_label *label;
2260
2261 CHECK_ERROR_PTR();
2262 check_sljit_emit_label(compiler);
2263
2264 if (compiler->last_label && compiler->last_label->size == compiler->size)
2265 return compiler->last_label;
2266
2267 label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label));
2268 PTR_FAIL_IF(!label);
2269 set_label(label, compiler);
2270 return label;
2271 }
2272
2273 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, int type)
2274 {
2275 struct sljit_jump *jump;
2276
2277 CHECK_ERROR_PTR();
2278 check_sljit_emit_jump(compiler, type);
2279
2280 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
2281 PTR_FAIL_IF(!jump);
2282 set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
2283 type &= 0xff;
2284
2285 /* In ARM, we don't need to touch the arguments. */
2286 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2287 if (type >= SLJIT_FAST_CALL)
2288 PTR_FAIL_IF(prepare_blx(compiler));
2289 PTR_FAIL_IF(push_inst_with_unique_literal(compiler, ((EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0,
2290 type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, TMP_PC, 0)) & ~COND_MASK) | get_cc(type), 0));
2291
2292 if (jump->flags & SLJIT_REWRITABLE_JUMP) {
2293 jump->addr = compiler->size;
2294 compiler->patches++;
2295 }
2296
2297 if (type >= SLJIT_FAST_CALL) {
2298 jump->flags |= IS_BL;
2299 PTR_FAIL_IF(emit_blx(compiler));
2300 }
2301
2302 if (!(jump->flags & SLJIT_REWRITABLE_JUMP))
2303 jump->addr = compiler->size;
2304 #else
2305 if (type >= SLJIT_FAST_CALL)
2306 jump->flags |= IS_BL;
2307 PTR_FAIL_IF(emit_imm(compiler, TMP_REG1, 0));
2308 PTR_FAIL_IF(push_inst(compiler, (((type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1)) & ~COND_MASK) | get_cc(type)));
2309 jump->addr = compiler->size;
2310 #endif
2311 return jump;
2312 }
2313
2314 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_ijump(struct sljit_compiler *compiler, int type, int src, sljit_w srcw)
2315 {
2316 struct sljit_jump *jump;
2317
2318 CHECK_ERROR();
2319 check_sljit_emit_ijump(compiler, type, src, srcw);
2320
2321 /* In ARM, we don't need to touch the arguments. */
2322 if (src & SLJIT_IMM) {
2323 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
2324 FAIL_IF(!jump);
2325 set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_BL : 0));
2326 jump->u.target = srcw;
2327
2328 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2329 if (type >= SLJIT_FAST_CALL)
2330 FAIL_IF(prepare_blx(compiler));
2331 FAIL_IF(push_inst_with_unique_literal(compiler, EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0, type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, TMP_PC, 0), 0));
2332 if (type >= SLJIT_FAST_CALL)
2333 FAIL_IF(emit_blx(compiler));
2334 #else
2335 FAIL_IF(emit_imm(compiler, TMP_REG1, 0));
2336 FAIL_IF(push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1)));
2337 #endif
2338 jump->addr = compiler->size;
2339 }
2340 else {
2341 if (src >= SLJIT_TEMPORARY_REG1 && src <= SLJIT_NO_REGISTERS)
2342 return push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(src));
2343
2344 SLJIT_ASSERT(src & SLJIT_MEM);
2345 FAIL_IF(emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, TMP_REG2, 0, TMP_REG1, 0, src, srcw));
2346 return push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG2));
2347 }
2348
2349 return SLJIT_SUCCESS;
2350 }
2351
2352 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_cond_value(struct sljit_compiler *compiler, int op, int dst, sljit_w dstw, int type)
2353 {
2354 int reg;
2355 sljit_uw cc;
2356
2357 CHECK_ERROR();
2358 check_sljit_emit_cond_value(compiler, op, dst, dstw, type);
2359
2360 if (dst == SLJIT_UNUSED)
2361 return SLJIT_SUCCESS;
2362
2363 cc = get_cc(type);
2364 if (GET_OPCODE(op) == SLJIT_OR) {
2365 if (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) {
2366 EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(ORR_DP, 0, dst, dst, SRC2_IMM | 1) & ~COND_MASK) | cc);
2367 if (op & SLJIT_SET_E)
2368 return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, SET_FLAGS, TMP_REG1, SLJIT_UNUSED, RM(dst)));
2369 return SLJIT_SUCCESS;
2370 }
2371
2372 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, SRC2_IMM | 0));
2373 EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, SRC2_IMM | 1) & ~COND_MASK) | cc);
2374 #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) || (defined SLJIT_DEBUG && SLJIT_DEBUG)
2375 compiler->skip_checks = 1;
2376 #endif
2377 return emit_op(compiler, op, ALLOW_IMM, dst, dstw, TMP_REG1, 0, dst, dstw);
2378 }
2379
2380 reg = (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) ? dst : TMP_REG2;
2381
2382 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, SRC2_IMM | 0));
2383 EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, SRC2_IMM | 1) & ~COND_MASK) | cc);
2384
2385 if (reg == TMP_REG2)
2386 return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, TMP_REG2, 0);
2387 return SLJIT_SUCCESS;
2388 }
2389
2390 SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, int dst, sljit_w dstw, sljit_w init_value)
2391 {
2392 struct sljit_const *const_;
2393 int reg;
2394
2395 CHECK_ERROR_PTR();
2396 check_sljit_emit_const(compiler, dst, dstw, init_value);
2397
2398 const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const));
2399 PTR_FAIL_IF(!const_);
2400
2401 reg = (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) ? dst : TMP_REG2;
2402
2403 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2404 PTR_FAIL_IF(push_inst_with_unique_literal(compiler, EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0, reg, TMP_PC, 0), init_value));
2405 compiler->patches++;
2406 #else
2407 PTR_FAIL_IF(emit_imm(compiler, reg, init_value));
2408 #endif
2409 set_const(const_, compiler);
2410
2411 if (reg == TMP_REG2 && dst != SLJIT_UNUSED)
2412 if (emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, TMP_REG2, 0))
2413 return NULL;
2414 return const_;
2415 }
2416
2417 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr)
2418 {
2419 inline_set_jump_addr(addr, new_addr, 1);
2420 }
2421
2422 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_w new_constant)
2423 {
2424 inline_set_const(addr, new_constant, 1);
2425 }

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