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apple: restrict calling pthread_jit_write_protect_np to macOS >= 11 (#111)
[sljit.git] / sljit_src / sljitNativeARM_32.c
blob74cf55fcd28c4f221b7c7df9944a22a37dbc48a2
1 /*
2 * Stack-less Just-In-Time compiler
3 *
4 * Copyright 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 #ifdef __SOFTFP__
28 #define ARM_ABI_INFO " ABI:softfp"
29 #else
30 #define ARM_ABI_INFO " ABI:hardfp"
31 #endif
32
33 SLJIT_API_FUNC_ATTRIBUTE const char* sljit_get_platform_name(void)
34 {
35 #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
36 return "ARMv7" SLJIT_CPUINFO ARM_ABI_INFO;
37 #elif (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
38 return "ARMv5" SLJIT_CPUINFO ARM_ABI_INFO;
39 #else
40 #error "Internal error: Unknown ARM architecture"
41 #endif
42 }
43
44 /* Last register + 1. */
45 #define TMP_REG1 (SLJIT_NUMBER_OF_REGISTERS + 2)
46 #define TMP_REG2 (SLJIT_NUMBER_OF_REGISTERS + 3)
47 #define TMP_PC (SLJIT_NUMBER_OF_REGISTERS + 4)
48
49 #define TMP_FREG1 (SLJIT_NUMBER_OF_FLOAT_REGISTERS + 1)
50 #define TMP_FREG2 (SLJIT_NUMBER_OF_FLOAT_REGISTERS + 2)
51
52 /* In ARM instruction words.
53 Cache lines are usually 32 byte aligned. */
54 #define CONST_POOL_ALIGNMENT 8
55 #define CONST_POOL_EMPTY 0xffffffff
56
57 #define ALIGN_INSTRUCTION(ptr) \
58 (sljit_uw*)(((sljit_uw)(ptr) + (CONST_POOL_ALIGNMENT * sizeof(sljit_uw)) - 1) & ~((CONST_POOL_ALIGNMENT * sizeof(sljit_uw)) - 1))
59 #define MAX_DIFFERENCE(max_diff) \
60 (((max_diff) / (sljit_s32)sizeof(sljit_uw)) - (CONST_POOL_ALIGNMENT - 1))
61
62 /* See sljit_emit_enter and sljit_emit_op0 if you want to change them. */
63 static const sljit_u8 reg_map[SLJIT_NUMBER_OF_REGISTERS + 5] = {
64 0, 0, 1, 2, 3, 11, 10, 9, 8, 7, 6, 5, 4, 13, 12, 14, 15
65 };
66
67 static const sljit_u8 freg_map[SLJIT_NUMBER_OF_FLOAT_REGISTERS + 3] = {
68 0, 0, 1, 2, 3, 4, 5, 6, 7
69 };
70
71 #define RM(rm) (reg_map[rm])
72 #define RD(rd) (reg_map[rd] << 12)
73 #define RN(rn) (reg_map[rn] << 16)
74
75 /* --------------------------------------------------------------------- */
76 /* Instrucion forms */
77 /* --------------------------------------------------------------------- */
78
79 /* The instruction includes the AL condition.
80 INST_NAME - CONDITIONAL remove this flag. */
81 #define COND_MASK 0xf0000000
82 #define CONDITIONAL 0xe0000000
83 #define PUSH_POOL 0xff000000
84
85 #define ADC 0xe0a00000
86 #define ADD 0xe0800000
87 #define AND 0xe0000000
88 #define B 0xea000000
89 #define BIC 0xe1c00000
90 #define BL 0xeb000000
91 #define BLX 0xe12fff30
92 #define BX 0xe12fff10
93 #define CLZ 0xe16f0f10
94 #define CMN 0xe1600000
95 #define CMP 0xe1400000
96 #define BKPT 0xe1200070
97 #define EOR 0xe0200000
98 #define MOV 0xe1a00000
99 #define MUL 0xe0000090
100 #define MVN 0xe1e00000
101 #define NOP 0xe1a00000
102 #define ORR 0xe1800000
103 #define PUSH 0xe92d0000
104 #define POP 0xe8bd0000
105 #define RSB 0xe0600000
106 #define RSC 0xe0e00000
107 #define SBC 0xe0c00000
108 #define SMULL 0xe0c00090
109 #define SUB 0xe0400000
110 #define UMULL 0xe0800090
111 #define VABS_F32 0xeeb00ac0
112 #define VADD_F32 0xee300a00
113 #define VCMP_F32 0xeeb40a40
114 #define VCVT_F32_S32 0xeeb80ac0
115 #define VCVT_F64_F32 0xeeb70ac0
116 #define VCVT_S32_F32 0xeebd0ac0
117 #define VDIV_F32 0xee800a00
118 #define VMOV_F32 0xeeb00a40
119 #define VMOV 0xee000a10
120 #define VMOV2 0xec400a10
121 #define VMRS 0xeef1fa10
122 #define VMUL_F32 0xee200a00
123 #define VNEG_F32 0xeeb10a40
124 #define VSTR_F32 0xed000a00
125 #define VSUB_F32 0xee300a40
126
127 #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
128 /* Arm v7 specific instructions. */
129 #define MOVW 0xe3000000
130 #define MOVT 0xe3400000
131 #define SXTB 0xe6af0070
132 #define SXTH 0xe6bf0070
133 #define UXTB 0xe6ef0070
134 #define UXTH 0xe6ff0070
135 #endif
136
137 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
138
139 static sljit_s32 push_cpool(struct sljit_compiler *compiler)
140 {
141 /* Pushing the constant pool into the instruction stream. */
142 sljit_uw* inst;
143 sljit_uw* cpool_ptr;
144 sljit_uw* cpool_end;
145 sljit_s32 i;
146
147 /* The label could point the address after the constant pool. */
148 if (compiler->last_label && compiler->last_label->size == compiler->size)
149 compiler->last_label->size += compiler->cpool_fill + (CONST_POOL_ALIGNMENT - 1) + 1;
150
151 SLJIT_ASSERT(compiler->cpool_fill > 0 && compiler->cpool_fill <= CPOOL_SIZE);
152 inst = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
153 FAIL_IF(!inst);
154 compiler->size++;
155 *inst = 0xff000000 | compiler->cpool_fill;
156
157 for (i = 0; i < CONST_POOL_ALIGNMENT - 1; i++) {
158 inst = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
159 FAIL_IF(!inst);
160 compiler->size++;
161 *inst = 0;
162 }
163
164 cpool_ptr = compiler->cpool;
165 cpool_end = cpool_ptr + compiler->cpool_fill;
166 while (cpool_ptr < cpool_end) {
167 inst = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
168 FAIL_IF(!inst);
169 compiler->size++;
170 *inst = *cpool_ptr++;
171 }
172 compiler->cpool_diff = CONST_POOL_EMPTY;
173 compiler->cpool_fill = 0;
174 return SLJIT_SUCCESS;
175 }
176
177 static sljit_s32 push_inst(struct sljit_compiler *compiler, sljit_uw inst)
178 {
179 sljit_uw* ptr;
180
181 if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092)))
182 FAIL_IF(push_cpool(compiler));
183
184 ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
185 FAIL_IF(!ptr);
186 compiler->size++;
187 *ptr = inst;
188 return SLJIT_SUCCESS;
189 }
190
191 static sljit_s32 push_inst_with_literal(struct sljit_compiler *compiler, sljit_uw inst, sljit_uw literal)
192 {
193 sljit_uw* ptr;
194 sljit_uw cpool_index = CPOOL_SIZE;
195 sljit_uw* cpool_ptr;
196 sljit_uw* cpool_end;
197 sljit_u8* cpool_unique_ptr;
198
199 if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092)))
200 FAIL_IF(push_cpool(compiler));
201 else if (compiler->cpool_fill > 0) {
202 cpool_ptr = compiler->cpool;
203 cpool_end = cpool_ptr + compiler->cpool_fill;
204 cpool_unique_ptr = compiler->cpool_unique;
205 do {
206 if ((*cpool_ptr == literal) && !(*cpool_unique_ptr)) {
207 cpool_index = cpool_ptr - compiler->cpool;
208 break;
209 }
210 cpool_ptr++;
211 cpool_unique_ptr++;
212 } while (cpool_ptr < cpool_end);
213 }
214
215 if (cpool_index == CPOOL_SIZE) {
216 /* Must allocate a new entry in the literal pool. */
217 if (compiler->cpool_fill < CPOOL_SIZE) {
218 cpool_index = compiler->cpool_fill;
219 compiler->cpool_fill++;
220 }
221 else {
222 FAIL_IF(push_cpool(compiler));
223 cpool_index = 0;
224 compiler->cpool_fill = 1;
225 }
226 }
227
228 SLJIT_ASSERT((inst & 0xfff) == 0);
229 ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
230 FAIL_IF(!ptr);
231 compiler->size++;
232 *ptr = inst | cpool_index;
233
234 compiler->cpool[cpool_index] = literal;
235 compiler->cpool_unique[cpool_index] = 0;
236 if (compiler->cpool_diff == CONST_POOL_EMPTY)
237 compiler->cpool_diff = compiler->size;
238 return SLJIT_SUCCESS;
239 }
240
241 static sljit_s32 push_inst_with_unique_literal(struct sljit_compiler *compiler, sljit_uw inst, sljit_uw literal)
242 {
243 sljit_uw* ptr;
244 if (SLJIT_UNLIKELY((compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092)) || compiler->cpool_fill >= CPOOL_SIZE))
245 FAIL_IF(push_cpool(compiler));
246
247 SLJIT_ASSERT(compiler->cpool_fill < CPOOL_SIZE && (inst & 0xfff) == 0);
248 ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
249 FAIL_IF(!ptr);
250 compiler->size++;
251 *ptr = inst | compiler->cpool_fill;
252
253 compiler->cpool[compiler->cpool_fill] = literal;
254 compiler->cpool_unique[compiler->cpool_fill] = 1;
255 compiler->cpool_fill++;
256 if (compiler->cpool_diff == CONST_POOL_EMPTY)
257 compiler->cpool_diff = compiler->size;
258 return SLJIT_SUCCESS;
259 }
260
261 static SLJIT_INLINE sljit_s32 prepare_blx(struct sljit_compiler *compiler)
262 {
263 /* Place for at least two instruction (doesn't matter whether the first has a literal). */
264 if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4088)))
265 return push_cpool(compiler);
266 return SLJIT_SUCCESS;
267 }
268
269 static SLJIT_INLINE sljit_s32 emit_blx(struct sljit_compiler *compiler)
270 {
271 /* Must follow tightly the previous instruction (to be able to convert it to bl instruction). */
272 SLJIT_ASSERT(compiler->cpool_diff == CONST_POOL_EMPTY || compiler->size - compiler->cpool_diff < MAX_DIFFERENCE(4092));
273 SLJIT_ASSERT(reg_map[TMP_REG1] != 14);
274
275 return push_inst(compiler, BLX | RM(TMP_REG1));
276 }
277
278 static sljit_uw patch_pc_relative_loads(sljit_uw *last_pc_patch, sljit_uw *code_ptr, sljit_uw* const_pool, sljit_uw cpool_size)
279 {
280 sljit_uw diff;
281 sljit_uw ind;
282 sljit_uw counter = 0;
283 sljit_uw* clear_const_pool = const_pool;
284 sljit_uw* clear_const_pool_end = const_pool + cpool_size;
285
286 SLJIT_ASSERT(const_pool - code_ptr <= CONST_POOL_ALIGNMENT);
287 /* Set unused flag for all literals in the constant pool.
288 I.e.: unused literals can belong to branches, which can be encoded as B or BL.
289 We can "compress" the constant pool by discarding these literals. */
290 while (clear_const_pool < clear_const_pool_end)
291 *clear_const_pool++ = (sljit_uw)(-1);
292
293 while (last_pc_patch < code_ptr) {
294 /* Data transfer instruction with Rn == r15. */
295 if ((*last_pc_patch & 0x0c0f0000) == 0x040f0000) {
296 diff = const_pool - last_pc_patch;
297 ind = (*last_pc_patch) & 0xfff;
298
299 /* Must be a load instruction with immediate offset. */
300 SLJIT_ASSERT(ind < cpool_size && !(*last_pc_patch & (1 << 25)) && (*last_pc_patch & (1 << 20)));
301 if ((sljit_s32)const_pool[ind] < 0) {
302 const_pool[ind] = counter;
303 ind = counter;
304 counter++;
305 }
306 else
307 ind = const_pool[ind];
308
309 SLJIT_ASSERT(diff >= 1);
310 if (diff >= 2 || ind > 0) {
311 diff = (diff + ind - 2) << 2;
312 SLJIT_ASSERT(diff <= 0xfff);
313 *last_pc_patch = (*last_pc_patch & ~0xfff) | diff;
314 }
315 else
316 *last_pc_patch = (*last_pc_patch & ~(0xfff | (1 << 23))) | 0x004;
317 }
318 last_pc_patch++;
319 }
320 return counter;
321 }
322
323 /* In some rare ocasions we may need future patches. The probability is close to 0 in practice. */
324 struct future_patch {
325 struct future_patch* next;
326 sljit_s32 index;
327 sljit_s32 value;
328 };
329
330 static sljit_s32 resolve_const_pool_index(struct sljit_compiler *compiler, struct future_patch **first_patch, sljit_uw cpool_current_index, sljit_uw *cpool_start_address, sljit_uw *buf_ptr)
331 {
332 sljit_s32 value;
333 struct future_patch *curr_patch, *prev_patch;
334
335 SLJIT_UNUSED_ARG(compiler);
336
337 /* Using the values generated by patch_pc_relative_loads. */
338 if (!*first_patch)
339 value = (sljit_s32)cpool_start_address[cpool_current_index];
340 else {
341 curr_patch = *first_patch;
342 prev_patch = NULL;
343 while (1) {
344 if (!curr_patch) {
345 value = (sljit_s32)cpool_start_address[cpool_current_index];
346 break;
347 }
348 if ((sljit_uw)curr_patch->index == cpool_current_index) {
349 value = curr_patch->value;
350 if (prev_patch)
351 prev_patch->next = curr_patch->next;
352 else
353 *first_patch = curr_patch->next;
354 SLJIT_FREE(curr_patch, compiler->allocator_data);
355 break;
356 }
357 prev_patch = curr_patch;
358 curr_patch = curr_patch->next;
359 }
360 }
361
362 if (value >= 0) {
363 if ((sljit_uw)value > cpool_current_index) {
364 curr_patch = (struct future_patch*)SLJIT_MALLOC(sizeof(struct future_patch), compiler->allocator_data);
365 if (!curr_patch) {
366 while (*first_patch) {
367 curr_patch = *first_patch;
368 *first_patch = (*first_patch)->next;
369 SLJIT_FREE(curr_patch, compiler->allocator_data);
370 }
371 return SLJIT_ERR_ALLOC_FAILED;
372 }
373 curr_patch->next = *first_patch;
374 curr_patch->index = value;
375 curr_patch->value = cpool_start_address[value];
376 *first_patch = curr_patch;
377 }
378 cpool_start_address[value] = *buf_ptr;
379 }
380 return SLJIT_SUCCESS;
381 }
382
383 #else
384
385 static sljit_s32 push_inst(struct sljit_compiler *compiler, sljit_uw inst)
386 {
387 sljit_uw* ptr;
388
389 ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
390 FAIL_IF(!ptr);
391 compiler->size++;
392 *ptr = inst;
393 return SLJIT_SUCCESS;
394 }
395
396 static SLJIT_INLINE sljit_s32 emit_imm(struct sljit_compiler *compiler, sljit_s32 reg, sljit_sw imm)
397 {
398 FAIL_IF(push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | (imm & 0xfff)));
399 return push_inst(compiler, MOVT | RD(reg) | ((imm >> 12) & 0xf0000) | ((imm >> 16) & 0xfff));
400 }
401
402 #endif
403
404 static SLJIT_INLINE sljit_s32 detect_jump_type(struct sljit_jump *jump, sljit_uw *code_ptr, sljit_uw *code, sljit_sw executable_offset)
405 {
406 sljit_sw diff;
407
408 if (jump->flags & SLJIT_REWRITABLE_JUMP)
409 return 0;
410
411 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
412 if (jump->flags & IS_BL)
413 code_ptr--;
414
415 if (jump->flags & JUMP_ADDR)
416 diff = ((sljit_sw)jump->u.target - (sljit_sw)(code_ptr + 2) - executable_offset);
417 else {
418 SLJIT_ASSERT(jump->flags & JUMP_LABEL);
419 diff = ((sljit_sw)(code + jump->u.label->size) - (sljit_sw)(code_ptr + 2));
420 }
421
422 /* Branch to Thumb code has not been optimized yet. */
423 if (diff & 0x3)
424 return 0;
425
426 if (jump->flags & IS_BL) {
427 if (diff <= 0x01ffffff && diff >= -0x02000000) {
428 *code_ptr = (BL - CONDITIONAL) | (*(code_ptr + 1) & COND_MASK);
429 jump->flags |= PATCH_B;
430 return 1;
431 }
432 }
433 else {
434 if (diff <= 0x01ffffff && diff >= -0x02000000) {
435 *code_ptr = (B - CONDITIONAL) | (*code_ptr & COND_MASK);
436 jump->flags |= PATCH_B;
437 }
438 }
439 #else
440 if (jump->flags & JUMP_ADDR)
441 diff = ((sljit_sw)jump->u.target - (sljit_sw)code_ptr - executable_offset);
442 else {
443 SLJIT_ASSERT(jump->flags & JUMP_LABEL);
444 diff = ((sljit_sw)(code + jump->u.label->size) - (sljit_sw)code_ptr);
445 }
446
447 /* Branch to Thumb code has not been optimized yet. */
448 if (diff & 0x3)
449 return 0;
450
451 if (diff <= 0x01ffffff && diff >= -0x02000000) {
452 code_ptr -= 2;
453 *code_ptr = ((jump->flags & IS_BL) ? (BL - CONDITIONAL) : (B - CONDITIONAL)) | (code_ptr[2] & COND_MASK);
454 jump->flags |= PATCH_B;
455 return 1;
456 }
457 #endif
458 return 0;
459 }
460
461 static SLJIT_INLINE void inline_set_jump_addr(sljit_uw jump_ptr, sljit_sw executable_offset, sljit_uw new_addr, sljit_s32 flush_cache)
462 {
463 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
464 sljit_uw *ptr = (sljit_uw *)jump_ptr;
465 sljit_uw *inst = (sljit_uw *)ptr[0];
466 sljit_uw mov_pc = ptr[1];
467 sljit_s32 bl = (mov_pc & 0x0000f000) != RD(TMP_PC);
468 sljit_sw diff = (sljit_sw)(((sljit_sw)new_addr - (sljit_sw)(inst + 2) - executable_offset) >> 2);
469
470 SLJIT_UNUSED_ARG(executable_offset);
471
472 if (diff <= 0x7fffff && diff >= -0x800000) {
473 /* Turn to branch. */
474 if (!bl) {
475 if (flush_cache) {
476 SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 0);
477 }
478 inst[0] = (mov_pc & COND_MASK) | (B - CONDITIONAL) | (diff & 0xffffff);
479 if (flush_cache) {
480 SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 1);
481 inst = (sljit_uw *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
482 SLJIT_CACHE_FLUSH(inst, inst + 1);
483 }
484 } else {
485 if (flush_cache) {
486 SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 0);
487 }
488 inst[0] = (mov_pc & COND_MASK) | (BL - CONDITIONAL) | (diff & 0xffffff);
489 inst[1] = NOP;
490 if (flush_cache) {
491 SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 1);
492 inst = (sljit_uw *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
493 SLJIT_CACHE_FLUSH(inst, inst + 2);
494 }
495 }
496 } else {
497 /* Get the position of the constant. */
498 if (mov_pc & (1 << 23))
499 ptr = inst + ((mov_pc & 0xfff) >> 2) + 2;
500 else
501 ptr = inst + 1;
502
503 if (*inst != mov_pc) {
504 if (flush_cache) {
505 SLJIT_UPDATE_WX_FLAGS(inst, inst + (!bl ? 1 : 2), 0);
506 }
507 inst[0] = mov_pc;
508 if (!bl) {
509 if (flush_cache) {
510 SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 1);
511 inst = (sljit_uw *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
512 SLJIT_CACHE_FLUSH(inst, inst + 1);
513 }
514 } else {
515 inst[1] = BLX | RM(TMP_REG1);
516 if (flush_cache) {
517 SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 1);
518 inst = (sljit_uw *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
519 SLJIT_CACHE_FLUSH(inst, inst + 2);
520 }
521 }
522 }
523
524 if (flush_cache) {
525 SLJIT_UPDATE_WX_FLAGS(ptr, ptr + 1, 0);
526 }
527
528 *ptr = new_addr;
529
530 if (flush_cache) {
531 SLJIT_UPDATE_WX_FLAGS(ptr, ptr + 1, 1);
532 }
533 }
534 #else
535 sljit_uw *inst = (sljit_uw*)jump_ptr;
536
537 SLJIT_UNUSED_ARG(executable_offset);
538
539 SLJIT_ASSERT((inst[0] & 0xfff00000) == MOVW && (inst[1] & 0xfff00000) == MOVT);
540
541 if (flush_cache) {
542 SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 0);
543 }
544
545 inst[0] = MOVW | (inst[0] & 0xf000) | ((new_addr << 4) & 0xf0000) | (new_addr & 0xfff);
546 inst[1] = MOVT | (inst[1] & 0xf000) | ((new_addr >> 12) & 0xf0000) | ((new_addr >> 16) & 0xfff);
547
548 if (flush_cache) {
549 SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 1);
550 inst = (sljit_uw *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
551 SLJIT_CACHE_FLUSH(inst, inst + 2);
552 }
553 #endif
554 }
555
556 static sljit_uw get_imm(sljit_uw imm);
557
558 static SLJIT_INLINE void inline_set_const(sljit_uw addr, sljit_sw executable_offset, sljit_sw new_constant, sljit_s32 flush_cache)
559 {
560 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
561 sljit_uw *ptr = (sljit_uw*)addr;
562 sljit_uw *inst = (sljit_uw*)ptr[0];
563 sljit_uw ldr_literal = ptr[1];
564 sljit_uw src2;
565
566 SLJIT_UNUSED_ARG(executable_offset);
567
568 src2 = get_imm(new_constant);
569 if (src2) {
570 if (flush_cache) {
571 SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 0);
572 }
573
574 *inst = 0xe3a00000 | (ldr_literal & 0xf000) | src2;
575
576 if (flush_cache) {
577 SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 1);
578 inst = (sljit_uw *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
579 SLJIT_CACHE_FLUSH(inst, inst + 1);
580 }
581 return;
582 }
583
584 src2 = get_imm(~new_constant);
585 if (src2) {
586 if (flush_cache) {
587 SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 0);
588 }
589
590 *inst = 0xe3e00000 | (ldr_literal & 0xf000) | src2;
591
592 if (flush_cache) {
593 SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 1);
594 inst = (sljit_uw *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
595 SLJIT_CACHE_FLUSH(inst, inst + 1);
596 }
597 return;
598 }
599
600 if (ldr_literal & (1 << 23))
601 ptr = inst + ((ldr_literal & 0xfff) >> 2) + 2;
602 else
603 ptr = inst + 1;
604
605 if (*inst != ldr_literal) {
606 if (flush_cache) {
607 SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 0);
608 }
609
610 *inst = ldr_literal;
611
612 if (flush_cache) {
613 SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 1);
614 inst = (sljit_uw *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
615 SLJIT_CACHE_FLUSH(inst, inst + 1);
616 }
617 }
618
619 if (flush_cache) {
620 SLJIT_UPDATE_WX_FLAGS(ptr, ptr + 1, 0);
621 }
622
623 *ptr = new_constant;
624
625 if (flush_cache) {
626 SLJIT_UPDATE_WX_FLAGS(ptr, ptr + 1, 1);
627 }
628 #else
629 sljit_uw *inst = (sljit_uw*)addr;
630
631 SLJIT_UNUSED_ARG(executable_offset);
632
633 SLJIT_ASSERT((inst[0] & 0xfff00000) == MOVW && (inst[1] & 0xfff00000) == MOVT);
634
635 if (flush_cache) {
636 SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 0);
637 }
638
639 inst[0] = MOVW | (inst[0] & 0xf000) | ((new_constant << 4) & 0xf0000) | (new_constant & 0xfff);
640 inst[1] = MOVT | (inst[1] & 0xf000) | ((new_constant >> 12) & 0xf0000) | ((new_constant >> 16) & 0xfff);
641
642 if (flush_cache) {
643 SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 1);
644 inst = (sljit_uw *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
645 SLJIT_CACHE_FLUSH(inst, inst + 2);
646 }
647 #endif
648 }
649
650 SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler)
651 {
652 struct sljit_memory_fragment *buf;
653 sljit_uw *code;
654 sljit_uw *code_ptr;
655 sljit_uw *buf_ptr;
656 sljit_uw *buf_end;
657 sljit_uw size;
658 sljit_uw word_count;
659 sljit_uw next_addr;
660 sljit_sw executable_offset;
661 sljit_sw addr;
662 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
663 sljit_uw cpool_size;
664 sljit_uw cpool_skip_alignment;
665 sljit_uw cpool_current_index;
666 sljit_uw *cpool_start_address;
667 sljit_uw *last_pc_patch;
668 struct future_patch *first_patch;
669 #endif
670
671 struct sljit_label *label;
672 struct sljit_jump *jump;
673 struct sljit_const *const_;
674 struct sljit_put_label *put_label;
675
676 CHECK_ERROR_PTR();
677 CHECK_PTR(check_sljit_generate_code(compiler));
678 reverse_buf(compiler);
679
680 /* Second code generation pass. */
681 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
682 size = compiler->size + (compiler->patches << 1);
683 if (compiler->cpool_fill > 0)
684 size += compiler->cpool_fill + CONST_POOL_ALIGNMENT - 1;
685 #else
686 size = compiler->size;
687 #endif
688 code = (sljit_uw*)SLJIT_MALLOC_EXEC(size * sizeof(sljit_uw), compiler->exec_allocator_data);
689 PTR_FAIL_WITH_EXEC_IF(code);
690 buf = compiler->buf;
691
692 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
693 cpool_size = 0;
694 cpool_skip_alignment = 0;
695 cpool_current_index = 0;
696 cpool_start_address = NULL;
697 first_patch = NULL;
698 last_pc_patch = code;
699 #endif
700
701 code_ptr = code;
702 word_count = 0;
703 next_addr = 1;
704 executable_offset = SLJIT_EXEC_OFFSET(code);
705
706 label = compiler->labels;
707 jump = compiler->jumps;
708 const_ = compiler->consts;
709 put_label = compiler->put_labels;
710
711 if (label && label->size == 0) {
712 label->addr = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(code, executable_offset);
713 label = label->next;
714 }
715
716 do {
717 buf_ptr = (sljit_uw*)buf->memory;
718 buf_end = buf_ptr + (buf->used_size >> 2);
719 do {
720 word_count++;
721 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
722 if (cpool_size > 0) {
723 if (cpool_skip_alignment > 0) {
724 buf_ptr++;
725 cpool_skip_alignment--;
726 }
727 else {
728 if (SLJIT_UNLIKELY(resolve_const_pool_index(compiler, &first_patch, cpool_current_index, cpool_start_address, buf_ptr))) {
729 SLJIT_FREE_EXEC(code, compiler->exec_allocator_data);
730 compiler->error = SLJIT_ERR_ALLOC_FAILED;
731 return NULL;
732 }
733 buf_ptr++;
734 if (++cpool_current_index >= cpool_size) {
735 SLJIT_ASSERT(!first_patch);
736 cpool_size = 0;
737 if (label && label->size == word_count) {
738 /* Points after the current instruction. */
739 label->addr = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset);
740 label->size = code_ptr - code;
741 label = label->next;
742
743 next_addr = compute_next_addr(label, jump, const_, put_label);
744 }
745 }
746 }
747 }
748 else if ((*buf_ptr & 0xff000000) != PUSH_POOL) {
749 #endif
750 *code_ptr = *buf_ptr++;
751 if (next_addr == word_count) {
752 SLJIT_ASSERT(!label || label->size >= word_count);
753 SLJIT_ASSERT(!jump || jump->addr >= word_count);
754 SLJIT_ASSERT(!const_ || const_->addr >= word_count);
755 SLJIT_ASSERT(!put_label || put_label->addr >= word_count);
756
757 /* These structures are ordered by their address. */
758 if (jump && jump->addr == word_count) {
759 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
760 if (detect_jump_type(jump, code_ptr, code, executable_offset))
761 code_ptr--;
762 jump->addr = (sljit_uw)code_ptr;
763 #else
764 jump->addr = (sljit_uw)(code_ptr - 2);
765 if (detect_jump_type(jump, code_ptr, code, executable_offset))
766 code_ptr -= 2;
767 #endif
768 jump = jump->next;
769 }
770 if (label && label->size == word_count) {
771 /* code_ptr can be affected above. */
772 label->addr = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(code_ptr + 1, executable_offset);
773 label->size = (code_ptr + 1) - code;
774 label = label->next;
775 }
776 if (const_ && const_->addr == word_count) {
777 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
778 const_->addr = (sljit_uw)code_ptr;
779 #else
780 const_->addr = (sljit_uw)(code_ptr - 1);
781 #endif
782 const_ = const_->next;
783 }
784 if (put_label && put_label->addr == word_count) {
785 SLJIT_ASSERT(put_label->label);
786 put_label->addr = (sljit_uw)code_ptr;
787 put_label = put_label->next;
788 }
789 next_addr = compute_next_addr(label, jump, const_, put_label);
790 }
791 code_ptr++;
792 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
793 }
794 else {
795 /* Fortunately, no need to shift. */
796 cpool_size = *buf_ptr++ & ~PUSH_POOL;
797 SLJIT_ASSERT(cpool_size > 0);
798 cpool_start_address = ALIGN_INSTRUCTION(code_ptr + 1);
799 cpool_current_index = patch_pc_relative_loads(last_pc_patch, code_ptr, cpool_start_address, cpool_size);
800 if (cpool_current_index > 0) {
801 /* Unconditional branch. */
802 *code_ptr = B | (((cpool_start_address - code_ptr) + cpool_current_index - 2) & ~PUSH_POOL);
803 code_ptr = cpool_start_address + cpool_current_index;
804 }
805 cpool_skip_alignment = CONST_POOL_ALIGNMENT - 1;
806 cpool_current_index = 0;
807 last_pc_patch = code_ptr;
808 }
809 #endif
810 } while (buf_ptr < buf_end);
811 buf = buf->next;
812 } while (buf);
813
814 SLJIT_ASSERT(!label);
815 SLJIT_ASSERT(!jump);
816 SLJIT_ASSERT(!const_);
817 SLJIT_ASSERT(!put_label);
818
819 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
820 SLJIT_ASSERT(cpool_size == 0);
821 if (compiler->cpool_fill > 0) {
822 cpool_start_address = ALIGN_INSTRUCTION(code_ptr);
823 cpool_current_index = patch_pc_relative_loads(last_pc_patch, code_ptr, cpool_start_address, compiler->cpool_fill);
824 if (cpool_current_index > 0)
825 code_ptr = cpool_start_address + cpool_current_index;
826
827 buf_ptr = compiler->cpool;
828 buf_end = buf_ptr + compiler->cpool_fill;
829 cpool_current_index = 0;
830 while (buf_ptr < buf_end) {
831 if (SLJIT_UNLIKELY(resolve_const_pool_index(compiler, &first_patch, cpool_current_index, cpool_start_address, buf_ptr))) {
832 SLJIT_FREE_EXEC(code, compiler->exec_allocator_data);
833 compiler->error = SLJIT_ERR_ALLOC_FAILED;
834 return NULL;
835 }
836 buf_ptr++;
837 cpool_current_index++;
838 }
839 SLJIT_ASSERT(!first_patch);
840 }
841 #endif
842
843 jump = compiler->jumps;
844 while (jump) {
845 buf_ptr = (sljit_uw *)jump->addr;
846
847 if (jump->flags & PATCH_B) {
848 addr = (sljit_sw)SLJIT_ADD_EXEC_OFFSET(buf_ptr + 2, executable_offset);
849 if (!(jump->flags & JUMP_ADDR)) {
850 SLJIT_ASSERT(jump->flags & JUMP_LABEL);
851 SLJIT_ASSERT(((sljit_sw)jump->u.label->addr - addr) <= 0x01ffffff && ((sljit_sw)jump->u.label->addr - addr) >= -0x02000000);
852 *buf_ptr |= (((sljit_sw)jump->u.label->addr - addr) >> 2) & 0x00ffffff;
853 }
854 else {
855 SLJIT_ASSERT(((sljit_sw)jump->u.target - addr) <= 0x01ffffff && ((sljit_sw)jump->u.target - addr) >= -0x02000000);
856 *buf_ptr |= (((sljit_sw)jump->u.target - addr) >> 2) & 0x00ffffff;
857 }
858 }
859 else if (jump->flags & SLJIT_REWRITABLE_JUMP) {
860 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
861 jump->addr = (sljit_uw)code_ptr;
862 code_ptr[0] = (sljit_uw)buf_ptr;
863 code_ptr[1] = *buf_ptr;
864 inline_set_jump_addr((sljit_uw)code_ptr, executable_offset, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0);
865 code_ptr += 2;
866 #else
867 inline_set_jump_addr((sljit_uw)buf_ptr, executable_offset, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0);
868 #endif
869 }
870 else {
871 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
872 if (jump->flags & IS_BL)
873 buf_ptr--;
874 if (*buf_ptr & (1 << 23))
875 buf_ptr += ((*buf_ptr & 0xfff) >> 2) + 2;
876 else
877 buf_ptr += 1;
878 *buf_ptr = (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target;
879 #else
880 inline_set_jump_addr((sljit_uw)buf_ptr, executable_offset, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0);
881 #endif
882 }
883 jump = jump->next;
884 }
885
886 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
887 const_ = compiler->consts;
888 while (const_) {
889 buf_ptr = (sljit_uw*)const_->addr;
890 const_->addr = (sljit_uw)code_ptr;
891
892 code_ptr[0] = (sljit_uw)buf_ptr;
893 code_ptr[1] = *buf_ptr;
894 if (*buf_ptr & (1 << 23))
895 buf_ptr += ((*buf_ptr & 0xfff) >> 2) + 2;
896 else
897 buf_ptr += 1;
898 /* Set the value again (can be a simple constant). */
899 inline_set_const((sljit_uw)code_ptr, executable_offset, *buf_ptr, 0);
900 code_ptr += 2;
901
902 const_ = const_->next;
903 }
904 #endif
905
906 put_label = compiler->put_labels;
907 while (put_label) {
908 addr = put_label->label->addr;
909 buf_ptr = (sljit_uw*)put_label->addr;
910
911 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
912 SLJIT_ASSERT((buf_ptr[0] & 0xffff0000) == 0xe59f0000);
913 buf_ptr[((buf_ptr[0] & 0xfff) >> 2) + 2] = addr;
914 #else
915 SLJIT_ASSERT((buf_ptr[-1] & 0xfff00000) == MOVW && (buf_ptr[0] & 0xfff00000) == MOVT);
916 buf_ptr[-1] |= ((addr << 4) & 0xf0000) | (addr & 0xfff);
917 buf_ptr[0] |= ((addr >> 12) & 0xf0000) | ((addr >> 16) & 0xfff);
918 #endif
919 put_label = put_label->next;
920 }
921
922 SLJIT_ASSERT(code_ptr - code <= (sljit_s32)size);
923
924 compiler->error = SLJIT_ERR_COMPILED;
925 compiler->executable_offset = executable_offset;
926 compiler->executable_size = (code_ptr - code) * sizeof(sljit_uw);
927
928 code = (sljit_uw *)SLJIT_ADD_EXEC_OFFSET(code, executable_offset);
929 code_ptr = (sljit_uw *)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset);
930
931 SLJIT_CACHE_FLUSH(code, code_ptr);
932 SLJIT_UPDATE_WX_FLAGS(code, code_ptr, 1);
933 return code;
934 }
935
936 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_has_cpu_feature(sljit_s32 feature_type)
937 {
938 switch (feature_type) {
939 case SLJIT_HAS_FPU:
940 #ifdef SLJIT_IS_FPU_AVAILABLE
941 return SLJIT_IS_FPU_AVAILABLE;
942 #else
943 /* Available by default. */
944 return 1;
945 #endif
946
947 case SLJIT_HAS_CLZ:
948 case SLJIT_HAS_CMOV:
949 #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
950 case SLJIT_HAS_PREFETCH:
951 #endif
952 return 1;
953
954 default:
955 return 0;
956 }
957 }
958
959 /* --------------------------------------------------------------------- */
960 /* Entry, exit */
961 /* --------------------------------------------------------------------- */
962
963 /* Creates an index in data_transfer_insts array. */
964 #define WORD_SIZE 0x00
965 #define BYTE_SIZE 0x01
966 #define HALF_SIZE 0x02
967 #define PRELOAD 0x03
968 #define SIGNED 0x04
969 #define LOAD_DATA 0x08
970
971 /* Flag bits for emit_op. */
972 #define ALLOW_IMM 0x10
973 #define ALLOW_INV_IMM 0x20
974 #define ALLOW_ANY_IMM (ALLOW_IMM | ALLOW_INV_IMM)
975
976 /* s/l - store/load (1 bit)
977 u/s - signed/unsigned (1 bit)
978 w/b/h/N - word/byte/half/NOT allowed (2 bit)
979 Storing signed and unsigned values are the same operations. */
980
981 static const sljit_uw data_transfer_insts[16] = {
982 /* s u w */ 0xe5000000 /* str */,
983 /* s u b */ 0xe5400000 /* strb */,
984 /* s u h */ 0xe10000b0 /* strh */,
985 /* s u N */ 0x00000000 /* not allowed */,
986 /* s s w */ 0xe5000000 /* str */,
987 /* s s b */ 0xe5400000 /* strb */,
988 /* s s h */ 0xe10000b0 /* strh */,
989 /* s s N */ 0x00000000 /* not allowed */,
990
991 /* l u w */ 0xe5100000 /* ldr */,
992 /* l u b */ 0xe5500000 /* ldrb */,
993 /* l u h */ 0xe11000b0 /* ldrh */,
994 /* l u p */ 0xf5500000 /* preload */,
995 /* l s w */ 0xe5100000 /* ldr */,
996 /* l s b */ 0xe11000d0 /* ldrsb */,
997 /* l s h */ 0xe11000f0 /* ldrsh */,
998 /* l s N */ 0x00000000 /* not allowed */,
999 };
1000
1001 #define EMIT_DATA_TRANSFER(type, add, target_reg, base_reg, arg) \
1002 (data_transfer_insts[(type) & 0xf] | ((add) << 23) | RD(target_reg) | RN(base_reg) | (arg))
1003
1004 /* Normal ldr/str instruction.
1005 Type2: ldrsb, ldrh, ldrsh */
1006 #define IS_TYPE1_TRANSFER(type) \
1007 (data_transfer_insts[(type) & 0xf] & 0x04000000)
1008 #define TYPE2_TRANSFER_IMM(imm) \
1009 (((imm) & 0xf) | (((imm) & 0xf0) << 4) | (1 << 22))
1010
1011 static sljit_s32 emit_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 inp_flags,
1012 sljit_s32 dst, sljit_sw dstw,
1013 sljit_s32 src1, sljit_sw src1w,
1014 sljit_s32 src2, sljit_sw src2w);
1015
1016 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compiler,
1017 sljit_s32 options, sljit_s32 arg_types, sljit_s32 scratches, sljit_s32 saveds,
1018 sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size)
1019 {
1020 sljit_s32 args, size, i, tmp;
1021 sljit_uw push;
1022
1023 CHECK_ERROR();
1024 CHECK(check_sljit_emit_enter(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size));
1025 set_emit_enter(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size);
1026
1027 /* Push saved registers, temporary registers
1028 stmdb sp!, {..., lr} */
1029 push = PUSH | (1 << 14);
1030
1031 tmp = saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - saveds) : SLJIT_FIRST_SAVED_REG;
1032 for (i = SLJIT_S0; i >= tmp; i--)
1033 push |= 1 << reg_map[i];
1034
1035 for (i = scratches; i >= SLJIT_FIRST_SAVED_REG; i--)
1036 push |= 1 << reg_map[i];
1037
1038 FAIL_IF(push_inst(compiler, push));
1039
1040 /* Stack must be aligned to 8 bytes: */
1041 size = GET_SAVED_REGISTERS_SIZE(scratches, saveds, 1);
1042 local_size = ((size + local_size + 7) & ~7) - size;
1043 compiler->local_size = local_size;
1044 if (local_size > 0)
1045 FAIL_IF(emit_op(compiler, SLJIT_SUB, ALLOW_IMM, SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, local_size));
1046
1047 args = get_arg_count(arg_types);
1048
1049 if (args >= 1)
1050 FAIL_IF(push_inst(compiler, MOV | RD(SLJIT_S0) | RM(SLJIT_R0)));
1051 if (args >= 2)
1052 FAIL_IF(push_inst(compiler, MOV | RD(SLJIT_S1) | RM(SLJIT_R1)));
1053 if (args >= 3)
1054 FAIL_IF(push_inst(compiler, MOV | RD(SLJIT_S2) | RM(SLJIT_R2)));
1055
1056 return SLJIT_SUCCESS;
1057 }
1058
1059 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_set_context(struct sljit_compiler *compiler,
1060 sljit_s32 options, sljit_s32 arg_types, sljit_s32 scratches, sljit_s32 saveds,
1061 sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size)
1062 {
1063 sljit_s32 size;
1064
1065 CHECK_ERROR();
1066 CHECK(check_sljit_set_context(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size));
1067 set_set_context(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size);
1068
1069 size = GET_SAVED_REGISTERS_SIZE(scratches, saveds, 1);
1070 compiler->local_size = ((size + local_size + 7) & ~7) - size;
1071 return SLJIT_SUCCESS;
1072 }
1073
1074 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 src, sljit_sw srcw)
1075 {
1076 sljit_s32 i, tmp;
1077 sljit_uw pop;
1078
1079 CHECK_ERROR();
1080 CHECK(check_sljit_emit_return(compiler, op, src, srcw));
1081
1082 FAIL_IF(emit_mov_before_return(compiler, op, src, srcw));
1083
1084 if (compiler->local_size > 0)
1085 FAIL_IF(emit_op(compiler, SLJIT_ADD, ALLOW_IMM, SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, compiler->local_size));
1086
1087 /* Push saved registers, temporary registers
1088 ldmia sp!, {..., pc} */
1089 pop = POP | (1 << 15);
1090
1091 tmp = compiler->saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - compiler->saveds) : SLJIT_FIRST_SAVED_REG;
1092 for (i = SLJIT_S0; i >= tmp; i--)
1093 pop |= 1 << reg_map[i];
1094
1095 for (i = compiler->scratches; i >= SLJIT_FIRST_SAVED_REG; i--)
1096 pop |= 1 << reg_map[i];
1097
1098 return push_inst(compiler, pop);
1099 }
1100
1101 /* --------------------------------------------------------------------- */
1102 /* Operators */
1103 /* --------------------------------------------------------------------- */
1104
1105 /* flags: */
1106 /* Arguments are swapped. */
1107 #define ARGS_SWAPPED 0x01
1108 /* Inverted immediate. */
1109 #define INV_IMM 0x02
1110 /* Source and destination is register. */
1111 #define MOVE_REG_CONV 0x04
1112 /* Unused return value. */
1113 #define UNUSED_RETURN 0x08
1114 /* SET_FLAGS must be (1 << 20) as it is also the value of S bit (can be used for optimization). */
1115 #define SET_FLAGS (1 << 20)
1116 /* dst: reg
1117 src1: reg
1118 src2: reg or imm (if allowed)
1119 SRC2_IMM must be (1 << 25) as it is also the value of I bit (can be used for optimization). */
1120 #define SRC2_IMM (1 << 25)
1121
1122 #define EMIT_SHIFT_INS_AND_RETURN(opcode) \
1123 SLJIT_ASSERT(!(flags & INV_IMM) && !(src2 & SRC2_IMM)); \
1124 if (compiler->shift_imm != 0x20) { \
1125 SLJIT_ASSERT(src1 == TMP_REG1); \
1126 SLJIT_ASSERT(!(flags & ARGS_SWAPPED)); \
1127 \
1128 if (compiler->shift_imm != 0) \
1129 return push_inst(compiler, MOV | (flags & SET_FLAGS) | \
1130 RD(dst) | (compiler->shift_imm << 7) | (opcode << 5) | RM(src2)); \
1131 return push_inst(compiler, MOV | (flags & SET_FLAGS) | RD(dst) | RM(src2)); \
1132 } \
1133 return push_inst(compiler, MOV | (flags & SET_FLAGS) | RD(dst) | \
1134 (reg_map[(flags & ARGS_SWAPPED) ? src1 : src2] << 8) | (opcode << 5) | 0x10 | RM((flags & ARGS_SWAPPED) ? src2 : src1));
1135
1136 static SLJIT_INLINE sljit_s32 emit_single_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 flags,
1137 sljit_s32 dst, sljit_s32 src1, sljit_s32 src2)
1138 {
1139 switch (GET_OPCODE(op)) {
1140 case SLJIT_MOV:
1141 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
1142 if (dst != src2) {
1143 if (src2 & SRC2_IMM) {
1144 return push_inst(compiler, ((flags & INV_IMM) ? MVN : MOV) | RD(dst) | src2);
1145 }
1146 return push_inst(compiler, MOV | RD(dst) | RM(src2));
1147 }
1148 return SLJIT_SUCCESS;
1149
1150 case SLJIT_MOV_U8:
1151 case SLJIT_MOV_S8:
1152 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
1153 if (flags & MOVE_REG_CONV) {
1154 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1155 if (op == SLJIT_MOV_U8)
1156 return push_inst(compiler, AND | RD(dst) | RN(src2) | SRC2_IMM | 0xff);
1157 FAIL_IF(push_inst(compiler, MOV | RD(dst) | (24 << 7) | RM(src2)));
1158 return push_inst(compiler, MOV | RD(dst) | (24 << 7) | (op == SLJIT_MOV_U8 ? 0x20 : 0x40) | RM(dst));
1159 #else
1160 return push_inst(compiler, (op == SLJIT_MOV_U8 ? UXTB : SXTB) | RD(dst) | RM(src2));
1161 #endif
1162 }
1163 else if (dst != src2) {
1164 SLJIT_ASSERT(src2 & SRC2_IMM);
1165 return push_inst(compiler, ((flags & INV_IMM) ? MVN : MOV) | RD(dst) | src2);
1166 }
1167 return SLJIT_SUCCESS;
1168
1169 case SLJIT_MOV_U16:
1170 case SLJIT_MOV_S16:
1171 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
1172 if (flags & MOVE_REG_CONV) {
1173 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1174 FAIL_IF(push_inst(compiler, MOV | RD(dst) | (16 << 7) | RM(src2)));
1175 return push_inst(compiler, MOV | RD(dst) | (16 << 7) | (op == SLJIT_MOV_U16 ? 0x20 : 0x40) | RM(dst));
1176 #else
1177 return push_inst(compiler, (op == SLJIT_MOV_U16 ? UXTH : SXTH) | RD(dst) | RM(src2));
1178 #endif
1179 }
1180 else if (dst != src2) {
1181 SLJIT_ASSERT(src2 & SRC2_IMM);
1182 return push_inst(compiler, ((flags & INV_IMM) ? MVN : MOV) | RD(dst) | src2);
1183 }
1184 return SLJIT_SUCCESS;
1185
1186 case SLJIT_NOT:
1187 if (src2 & SRC2_IMM) {
1188 return push_inst(compiler, ((flags & INV_IMM) ? MOV : MVN) | (flags & SET_FLAGS) | RD(dst) | src2);
1189 }
1190 return push_inst(compiler, MVN | (flags & SET_FLAGS) | RD(dst) | RM(src2));
1191
1192 case SLJIT_CLZ:
1193 SLJIT_ASSERT(!(flags & INV_IMM));
1194 SLJIT_ASSERT(!(src2 & SRC2_IMM));
1195 FAIL_IF(push_inst(compiler, CLZ | RD(dst) | RM(src2)));
1196 return SLJIT_SUCCESS;
1197
1198 case SLJIT_ADD:
1199 SLJIT_ASSERT(!(flags & INV_IMM));
1200 compiler->status_flags_state = SLJIT_CURRENT_FLAGS_ADD_SUB;
1201
1202 if ((flags & (UNUSED_RETURN | SET_FLAGS)) == (UNUSED_RETURN | SET_FLAGS) && !(flags & ARGS_SWAPPED))
1203 return push_inst(compiler, CMN | SET_FLAGS | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2)));
1204 return push_inst(compiler, ADD | (flags & SET_FLAGS) | RD(dst) | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2)));
1205
1206 case SLJIT_ADDC:
1207 SLJIT_ASSERT(!(flags & INV_IMM));
1208 return push_inst(compiler, ADC | (flags & SET_FLAGS) | RD(dst) | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2)));
1209
1210 case SLJIT_SUB:
1211 SLJIT_ASSERT(!(flags & INV_IMM));
1212 compiler->status_flags_state = SLJIT_CURRENT_FLAGS_ADD_SUB;
1213
1214 if ((flags & (UNUSED_RETURN | SET_FLAGS)) == (UNUSED_RETURN | SET_FLAGS) && !(flags & ARGS_SWAPPED))
1215 return push_inst(compiler, CMP | SET_FLAGS | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2)));
1216 return push_inst(compiler, (!(flags & ARGS_SWAPPED) ? SUB : RSB) | (flags & SET_FLAGS)
1217 | RD(dst) | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2)));
1218
1219 case SLJIT_SUBC:
1220 SLJIT_ASSERT(!(flags & INV_IMM));
1221 return push_inst(compiler, (!(flags & ARGS_SWAPPED) ? SBC : RSC) | (flags & SET_FLAGS)
1222 | RD(dst) | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2)));
1223
1224 case SLJIT_MUL:
1225 SLJIT_ASSERT(!(flags & INV_IMM));
1226 SLJIT_ASSERT(!(src2 & SRC2_IMM));
1227 compiler->status_flags_state = 0;
1228
1229 if (!HAS_FLAGS(op))
1230 return push_inst(compiler, MUL | (reg_map[dst] << 16) | (reg_map[src2] << 8) | reg_map[src1]);
1231
1232 FAIL_IF(push_inst(compiler, SMULL | (reg_map[TMP_REG1] << 16) | (reg_map[dst] << 12) | (reg_map[src2] << 8) | reg_map[src1]));
1233
1234 /* cmp TMP_REG1, dst asr #31. */
1235 return push_inst(compiler, CMP | SET_FLAGS | RN(TMP_REG1) | RM(dst) | 0xfc0);
1236
1237 case SLJIT_AND:
1238 return push_inst(compiler, (!(flags & INV_IMM) ? AND : BIC) | (flags & SET_FLAGS)
1239 | RD(dst) | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2)));
1240
1241 case SLJIT_OR:
1242 SLJIT_ASSERT(!(flags & INV_IMM));
1243 return push_inst(compiler, ORR | (flags & SET_FLAGS) | RD(dst) | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2)));
1244
1245 case SLJIT_XOR:
1246 SLJIT_ASSERT(!(flags & INV_IMM));
1247 return push_inst(compiler, EOR | (flags & SET_FLAGS) | RD(dst) | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2)));
1248
1249 case SLJIT_SHL:
1250 EMIT_SHIFT_INS_AND_RETURN(0);
1251
1252 case SLJIT_LSHR:
1253 EMIT_SHIFT_INS_AND_RETURN(1);
1254
1255 case SLJIT_ASHR:
1256 EMIT_SHIFT_INS_AND_RETURN(2);
1257 }
1258
1259 SLJIT_UNREACHABLE();
1260 return SLJIT_SUCCESS;
1261 }
1262
1263 #undef EMIT_SHIFT_INS_AND_RETURN
1264
1265 /* Tests whether the immediate can be stored in the 12 bit imm field.
1266 Returns with 0 if not possible. */
1267 static sljit_uw get_imm(sljit_uw imm)
1268 {
1269 sljit_s32 rol;
1270
1271 if (imm <= 0xff)
1272 return SRC2_IMM | imm;
1273
1274 if (!(imm & 0xff000000)) {
1275 imm <<= 8;
1276 rol = 8;
1277 }
1278 else {
1279 imm = (imm << 24) | (imm >> 8);
1280 rol = 0;
1281 }
1282
1283 if (!(imm & 0xff000000)) {
1284 imm <<= 8;
1285 rol += 4;
1286 }
1287
1288 if (!(imm & 0xf0000000)) {
1289 imm <<= 4;
1290 rol += 2;
1291 }
1292
1293 if (!(imm & 0xc0000000)) {
1294 imm <<= 2;
1295 rol += 1;
1296 }
1297
1298 if (!(imm & 0x00ffffff))
1299 return SRC2_IMM | (imm >> 24) | (rol << 8);
1300 else
1301 return 0;
1302 }
1303
1304 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1305 static sljit_s32 generate_int(struct sljit_compiler *compiler, sljit_s32 reg, sljit_uw imm, sljit_s32 positive)
1306 {
1307 sljit_uw mask;
1308 sljit_uw imm1;
1309 sljit_uw imm2;
1310 sljit_s32 rol;
1311
1312 /* Step1: Search a zero byte (8 continous zero bit). */
1313 mask = 0xff000000;
1314 rol = 8;
1315 while(1) {
1316 if (!(imm & mask)) {
1317 /* Rol imm by rol. */
1318 imm = (imm << rol) | (imm >> (32 - rol));
1319 /* Calculate arm rol. */
1320 rol = 4 + (rol >> 1);
1321 break;
1322 }
1323 rol += 2;
1324 mask >>= 2;
1325 if (mask & 0x3) {
1326 /* rol by 8. */
1327 imm = (imm << 8) | (imm >> 24);
1328 mask = 0xff00;
1329 rol = 24;
1330 while (1) {
1331 if (!(imm & mask)) {
1332 /* Rol imm by rol. */
1333 imm = (imm << rol) | (imm >> (32 - rol));
1334 /* Calculate arm rol. */
1335 rol = (rol >> 1) - 8;
1336 break;
1337 }
1338 rol += 2;
1339 mask >>= 2;
1340 if (mask & 0x3)
1341 return 0;
1342 }
1343 break;
1344 }
1345 }
1346
1347 /* The low 8 bit must be zero. */
1348 SLJIT_ASSERT(!(imm & 0xff));
1349
1350 if (!(imm & 0xff000000)) {
1351 imm1 = SRC2_IMM | ((imm >> 16) & 0xff) | (((rol + 4) & 0xf) << 8);
1352 imm2 = SRC2_IMM | ((imm >> 8) & 0xff) | (((rol + 8) & 0xf) << 8);
1353 }
1354 else if (imm & 0xc0000000) {
1355 imm1 = SRC2_IMM | ((imm >> 24) & 0xff) | ((rol & 0xf) << 8);
1356 imm <<= 8;
1357 rol += 4;
1358
1359 if (!(imm & 0xff000000)) {
1360 imm <<= 8;
1361 rol += 4;
1362 }
1363
1364 if (!(imm & 0xf0000000)) {
1365 imm <<= 4;
1366 rol += 2;
1367 }
1368
1369 if (!(imm & 0xc0000000)) {
1370 imm <<= 2;
1371 rol += 1;
1372 }
1373
1374 if (!(imm & 0x00ffffff))
1375 imm2 = SRC2_IMM | (imm >> 24) | ((rol & 0xf) << 8);
1376 else
1377 return 0;
1378 }
1379 else {
1380 if (!(imm & 0xf0000000)) {
1381 imm <<= 4;
1382 rol += 2;
1383 }
1384
1385 if (!(imm & 0xc0000000)) {
1386 imm <<= 2;
1387 rol += 1;
1388 }
1389
1390 imm1 = SRC2_IMM | ((imm >> 24) & 0xff) | ((rol & 0xf) << 8);
1391 imm <<= 8;
1392 rol += 4;
1393
1394 if (!(imm & 0xf0000000)) {
1395 imm <<= 4;
1396 rol += 2;
1397 }
1398
1399 if (!(imm & 0xc0000000)) {
1400 imm <<= 2;
1401 rol += 1;
1402 }
1403
1404 if (!(imm & 0x00ffffff))
1405 imm2 = SRC2_IMM | (imm >> 24) | ((rol & 0xf) << 8);
1406 else
1407 return 0;
1408 }
1409
1410 FAIL_IF(push_inst(compiler, (positive ? MOV : MVN) | RD(reg) | imm1));
1411 FAIL_IF(push_inst(compiler, (positive ? ORR : BIC) | RD(reg) | RN(reg) | imm2));
1412 return 1;
1413 }
1414 #endif
1415
1416 static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 reg, sljit_uw imm)
1417 {
1418 sljit_uw tmp;
1419
1420 #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
1421 if (!(imm & ~0xffff))
1422 return push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | (imm & 0xfff));
1423 #endif
1424
1425 /* Create imm by 1 inst. */
1426 tmp = get_imm(imm);
1427 if (tmp)
1428 return push_inst(compiler, MOV | RD(reg) | tmp);
1429
1430 tmp = get_imm(~imm);
1431 if (tmp)
1432 return push_inst(compiler, MVN | RD(reg) | tmp);
1433
1434 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1435 /* Create imm by 2 inst. */
1436 FAIL_IF(generate_int(compiler, reg, imm, 1));
1437 FAIL_IF(generate_int(compiler, reg, ~imm, 0));
1438
1439 /* Load integer. */
1440 return push_inst_with_literal(compiler, EMIT_DATA_TRANSFER(WORD_SIZE | LOAD_DATA, 1, reg, TMP_PC, 0), imm);
1441 #else
1442 FAIL_IF(push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | (imm & 0xfff)));
1443 if (imm <= 0xffff)
1444 return SLJIT_SUCCESS;
1445 return push_inst(compiler, MOVT | RD(reg) | ((imm >> 12) & 0xf0000) | ((imm >> 16) & 0xfff));
1446 #endif
1447 }
1448
1449 static SLJIT_INLINE sljit_s32 emit_op_mem(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg,
1450 sljit_s32 arg, sljit_sw argw, sljit_s32 tmp_reg)
1451 {
1452 sljit_uw imm, offset_reg;
1453 sljit_uw is_type1_transfer = IS_TYPE1_TRANSFER(flags);
1454
1455 SLJIT_ASSERT (arg & SLJIT_MEM);
1456 SLJIT_ASSERT((arg & REG_MASK) != tmp_reg);
1457
1458 if ((arg & REG_MASK) == SLJIT_UNUSED) {
1459 if (is_type1_transfer) {
1460 FAIL_IF(load_immediate(compiler, tmp_reg, argw & ~0xfff));
1461 argw &= 0xfff;
1462 }
1463 else {
1464 FAIL_IF(load_immediate(compiler, tmp_reg, argw & ~0xff));
1465 argw &= 0xff;
1466 }
1467
1468 return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 1, reg, tmp_reg,
1469 is_type1_transfer ? argw : TYPE2_TRANSFER_IMM(argw)));
1470 }
1471
1472 if (arg & OFFS_REG_MASK) {
1473 offset_reg = OFFS_REG(arg);
1474 arg &= REG_MASK;
1475 argw &= 0x3;
1476
1477 if (argw != 0 && !is_type1_transfer) {
1478 FAIL_IF(push_inst(compiler, ADD | RD(tmp_reg) | RN(arg) | RM(offset_reg) | (argw << 7)));
1479 return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 1, reg, tmp_reg, TYPE2_TRANSFER_IMM(0)));
1480 }
1481
1482 /* Bit 25: RM is offset. */
1483 return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 1, reg, arg,
1484 RM(offset_reg) | (is_type1_transfer ? (1 << 25) : 0) | (argw << 7)));
1485 }
1486
1487 arg &= REG_MASK;
1488
1489 if (is_type1_transfer) {
1490 if (argw > 0xfff) {
1491 imm = get_imm(argw & ~0xfff);
1492 if (imm) {
1493 FAIL_IF(push_inst(compiler, ADD | RD(tmp_reg) | RN(arg) | imm));
1494 argw = argw & 0xfff;
1495 arg = tmp_reg;
1496 }
1497 }
1498 else if (argw < -0xfff) {
1499 imm = get_imm(-argw & ~0xfff);
1500 if (imm) {
1501 FAIL_IF(push_inst(compiler, SUB | RD(tmp_reg) | RN(arg) | imm));
1502 argw = -(-argw & 0xfff);
1503 arg = tmp_reg;
1504 }
1505 }
1506
1507 if (argw >= 0 && argw <= 0xfff)
1508 return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 1, reg, arg, argw));
1509
1510 if (argw < 0 && argw >= -0xfff)
1511 return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 0, reg, arg, -argw));
1512 }
1513 else {
1514 if (argw > 0xff) {
1515 imm = get_imm(argw & ~0xff);
1516 if (imm) {
1517 FAIL_IF(push_inst(compiler, ADD | RD(tmp_reg) | RN(arg) | imm));
1518 argw = argw & 0xff;
1519 arg = tmp_reg;
1520 }
1521 }
1522 else if (argw < -0xff) {
1523 imm = get_imm(-argw & ~0xff);
1524 if (imm) {
1525 FAIL_IF(push_inst(compiler, SUB | RD(tmp_reg) | RN(arg) | imm));
1526 argw = -(-argw & 0xff);
1527 arg = tmp_reg;
1528 }
1529 }
1530
1531 if (argw >= 0 && argw <= 0xff)
1532 return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 1, reg, arg, TYPE2_TRANSFER_IMM(argw)));
1533
1534 if (argw < 0 && argw >= -0xff) {
1535 argw = -argw;
1536 return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 0, reg, arg, TYPE2_TRANSFER_IMM(argw)));
1537 }
1538 }
1539
1540 FAIL_IF(load_immediate(compiler, tmp_reg, argw));
1541 return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 1, reg, arg,
1542 RM(tmp_reg) | (is_type1_transfer ? (1 << 25) : 0)));
1543 }
1544
1545 static sljit_s32 emit_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 inp_flags,
1546 sljit_s32 dst, sljit_sw dstw,
1547 sljit_s32 src1, sljit_sw src1w,
1548 sljit_s32 src2, sljit_sw src2w)
1549 {
1550 /* src1 is reg or TMP_REG1
1551 src2 is reg, TMP_REG2, or imm
1552 result goes to TMP_REG2, so put result can use TMP_REG1. */
1553
1554 /* We prefers register and simple consts. */
1555 sljit_s32 dst_reg;
1556 sljit_s32 src1_reg;
1557 sljit_s32 src2_reg;
1558 sljit_s32 flags = HAS_FLAGS(op) ? SET_FLAGS : 0;
1559
1560 /* Destination check. */
1561 if (SLJIT_UNLIKELY(dst == SLJIT_UNUSED))
1562 flags |= UNUSED_RETURN;
1563
1564 SLJIT_ASSERT(!(inp_flags & ALLOW_INV_IMM) || (inp_flags & ALLOW_IMM));
1565
1566 src2_reg = 0;
1567
1568 do {
1569 if (!(inp_flags & ALLOW_IMM))
1570 break;
1571
1572 if (src2 & SLJIT_IMM) {
1573 src2_reg = get_imm(src2w);
1574 if (src2_reg)
1575 break;
1576 if (inp_flags & ALLOW_INV_IMM) {
1577 src2_reg = get_imm(~src2w);
1578 if (src2_reg) {
1579 flags |= INV_IMM;
1580 break;
1581 }
1582 }
1583 if (GET_OPCODE(op) == SLJIT_ADD) {
1584 src2_reg = get_imm(-src2w);
1585 if (src2_reg) {
1586 op = SLJIT_SUB | GET_ALL_FLAGS(op);
1587 break;
1588 }
1589 }
1590 if (GET_OPCODE(op) == SLJIT_SUB) {
1591 src2_reg = get_imm(-src2w);
1592 if (src2_reg) {
1593 op = SLJIT_ADD | GET_ALL_FLAGS(op);
1594 break;
1595 }
1596 }
1597 }
1598
1599 if (src1 & SLJIT_IMM) {
1600 src2_reg = get_imm(src1w);
1601 if (src2_reg) {
1602 flags |= ARGS_SWAPPED;
1603 src1 = src2;
1604 src1w = src2w;
1605 break;
1606 }
1607 if (inp_flags & ALLOW_INV_IMM) {
1608 src2_reg = get_imm(~src1w);
1609 if (src2_reg) {
1610 flags |= ARGS_SWAPPED | INV_IMM;
1611 src1 = src2;
1612 src1w = src2w;
1613 break;
1614 }
1615 }
1616 if (GET_OPCODE(op) == SLJIT_ADD) {
1617 src2_reg = get_imm(-src1w);
1618 if (src2_reg) {
1619 /* Note: add is commutative operation. */
1620 src1 = src2;
1621 src1w = src2w;
1622 op = SLJIT_SUB | GET_ALL_FLAGS(op);
1623 break;
1624 }
1625 }
1626 }
1627 } while(0);
1628
1629 /* Source 1. */
1630 if (FAST_IS_REG(src1))
1631 src1_reg = src1;
1632 else if (src1 & SLJIT_MEM) {
1633 FAIL_IF(emit_op_mem(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, TMP_REG1));
1634 src1_reg = TMP_REG1;
1635 }
1636 else {
1637 FAIL_IF(load_immediate(compiler, TMP_REG1, src1w));
1638 src1_reg = TMP_REG1;
1639 }
1640
1641 /* Destination. */
1642 dst_reg = SLOW_IS_REG(dst) ? dst : TMP_REG2;
1643
1644 if (op <= SLJIT_MOV_P) {
1645 if (dst & SLJIT_MEM) {
1646 if (inp_flags & BYTE_SIZE)
1647 inp_flags &= ~SIGNED;
1648
1649 if (FAST_IS_REG(src2))
1650 return emit_op_mem(compiler, inp_flags, src2, dst, dstw, TMP_REG2);
1651 }
1652
1653 if (FAST_IS_REG(src2) && dst_reg != TMP_REG2)
1654 flags |= MOVE_REG_CONV;
1655 }
1656
1657 /* Source 2. */
1658 if (src2_reg == 0) {
1659 src2_reg = (op <= SLJIT_MOV_P) ? dst_reg : TMP_REG2;
1660
1661 if (FAST_IS_REG(src2))
1662 src2_reg = src2;
1663 else if (src2 & SLJIT_MEM)
1664 FAIL_IF(emit_op_mem(compiler, inp_flags | LOAD_DATA, src2_reg, src2, src2w, TMP_REG2));
1665 else
1666 FAIL_IF(load_immediate(compiler, src2_reg, src2w));
1667 }
1668
1669 FAIL_IF(emit_single_op(compiler, op, flags, dst_reg, src1_reg, src2_reg));
1670
1671 if (!(dst & SLJIT_MEM))
1672 return SLJIT_SUCCESS;
1673
1674 return emit_op_mem(compiler, inp_flags, dst_reg, dst, dstw, TMP_REG1);
1675 }
1676
1677 #ifdef __cplusplus
1678 extern "C" {
1679 #endif
1680
1681 #if defined(__GNUC__)
1682 extern unsigned int __aeabi_uidivmod(unsigned int numerator, unsigned int denominator);
1683 extern int __aeabi_idivmod(int numerator, int denominator);
1684 #else
1685 #error "Software divmod functions are needed"
1686 #endif
1687
1688 #ifdef __cplusplus
1689 }
1690 #endif
1691
1692 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op0(struct sljit_compiler *compiler, sljit_s32 op)
1693 {
1694 sljit_sw saved_reg_list[3];
1695 sljit_sw saved_reg_count;
1696
1697 CHECK_ERROR();
1698 CHECK(check_sljit_emit_op0(compiler, op));
1699
1700 op = GET_OPCODE(op);
1701 switch (op) {
1702 case SLJIT_BREAKPOINT:
1703 FAIL_IF(push_inst(compiler, BKPT));
1704 break;
1705 case SLJIT_NOP:
1706 FAIL_IF(push_inst(compiler, NOP));
1707 break;
1708 case SLJIT_LMUL_UW:
1709 case SLJIT_LMUL_SW:
1710 return push_inst(compiler, (op == SLJIT_LMUL_UW ? UMULL : SMULL)
1711 | (reg_map[SLJIT_R1] << 16)
1712 | (reg_map[SLJIT_R0] << 12)
1713 | (reg_map[SLJIT_R0] << 8)
1714 | reg_map[SLJIT_R1]);
1715 case SLJIT_DIVMOD_UW:
1716 case SLJIT_DIVMOD_SW:
1717 case SLJIT_DIV_UW:
1718 case SLJIT_DIV_SW:
1719 SLJIT_COMPILE_ASSERT((SLJIT_DIVMOD_UW & 0x2) == 0 && SLJIT_DIV_UW - 0x2 == SLJIT_DIVMOD_UW, bad_div_opcode_assignments);
1720 SLJIT_ASSERT(reg_map[2] == 1 && reg_map[3] == 2 && reg_map[4] == 3);
1721
1722 saved_reg_count = 0;
1723 if (compiler->scratches >= 4)
1724 saved_reg_list[saved_reg_count++] = 3;
1725 if (compiler->scratches >= 3)
1726 saved_reg_list[saved_reg_count++] = 2;
1727 if (op >= SLJIT_DIV_UW)
1728 saved_reg_list[saved_reg_count++] = 1;
1729
1730 if (saved_reg_count > 0) {
1731 FAIL_IF(push_inst(compiler, 0xe52d0000 | (saved_reg_count >= 3 ? 16 : 8)
1732 | (saved_reg_list[0] << 12) /* str rX, [sp, #-8/-16]! */));
1733 if (saved_reg_count >= 2) {
1734 SLJIT_ASSERT(saved_reg_list[1] < 8);
1735 FAIL_IF(push_inst(compiler, 0xe58d0004 | (saved_reg_list[1] << 12) /* str rX, [sp, #4] */));
1736 }
1737 if (saved_reg_count >= 3) {
1738 SLJIT_ASSERT(saved_reg_list[2] < 8);
1739 FAIL_IF(push_inst(compiler, 0xe58d0008 | (saved_reg_list[2] << 12) /* str rX, [sp, #8] */));
1740 }
1741 }
1742
1743 #if defined(__GNUC__)
1744 FAIL_IF(sljit_emit_ijump(compiler, SLJIT_FAST_CALL, SLJIT_IMM,
1745 ((op | 0x2) == SLJIT_DIV_UW ? SLJIT_FUNC_OFFSET(__aeabi_uidivmod) : SLJIT_FUNC_OFFSET(__aeabi_idivmod))));
1746 #else
1747 #error "Software divmod functions are needed"
1748 #endif
1749
1750 if (saved_reg_count > 0) {
1751 if (saved_reg_count >= 3) {
1752 SLJIT_ASSERT(saved_reg_list[2] < 8);
1753 FAIL_IF(push_inst(compiler, 0xe59d0008 | (saved_reg_list[2] << 12) /* ldr rX, [sp, #8] */));
1754 }
1755 if (saved_reg_count >= 2) {
1756 SLJIT_ASSERT(saved_reg_list[1] < 8);
1757 FAIL_IF(push_inst(compiler, 0xe59d0004 | (saved_reg_list[1] << 12) /* ldr rX, [sp, #4] */));
1758 }
1759 return push_inst(compiler, 0xe49d0000 | (saved_reg_count >= 3 ? 16 : 8)
1760 | (saved_reg_list[0] << 12) /* ldr rX, [sp], #8/16 */);
1761 }
1762 return SLJIT_SUCCESS;
1763 case SLJIT_ENDBR:
1764 case SLJIT_SKIP_FRAMES_BEFORE_RETURN:
1765 return SLJIT_SUCCESS;
1766 }
1767
1768 return SLJIT_SUCCESS;
1769 }
1770
1771 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op1(struct sljit_compiler *compiler, sljit_s32 op,
1772 sljit_s32 dst, sljit_sw dstw,
1773 sljit_s32 src, sljit_sw srcw)
1774 {
1775 CHECK_ERROR();
1776 CHECK(check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw));
1777 ADJUST_LOCAL_OFFSET(dst, dstw);
1778 ADJUST_LOCAL_OFFSET(src, srcw);
1779
1780 switch (GET_OPCODE(op)) {
1781 case SLJIT_MOV:
1782 case SLJIT_MOV_U32:
1783 case SLJIT_MOV_S32:
1784 case SLJIT_MOV_P:
1785 return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, src, srcw);
1786
1787 case SLJIT_MOV_U8:
1788 return emit_op(compiler, SLJIT_MOV_U8, ALLOW_ANY_IMM | BYTE_SIZE, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u8)srcw : srcw);
1789
1790 case SLJIT_MOV_S8:
1791 return emit_op(compiler, SLJIT_MOV_S8, ALLOW_ANY_IMM | SIGNED | BYTE_SIZE, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_s8)srcw : srcw);
1792
1793 case SLJIT_MOV_U16:
1794 return emit_op(compiler, SLJIT_MOV_U16, ALLOW_ANY_IMM | HALF_SIZE, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u16)srcw : srcw);
1795
1796 case SLJIT_MOV_S16:
1797 return emit_op(compiler, SLJIT_MOV_S16, ALLOW_ANY_IMM | SIGNED | HALF_SIZE, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_s16)srcw : srcw);
1798
1799 case SLJIT_NOT:
1800 return emit_op(compiler, op, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, src, srcw);
1801
1802 case SLJIT_NEG:
1803 #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \
1804 || (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS)
1805 compiler->skip_checks = 1;
1806 #endif
1807 return sljit_emit_op2(compiler, SLJIT_SUB | GET_ALL_FLAGS(op), dst, dstw, SLJIT_IMM, 0, src, srcw);
1808
1809 case SLJIT_CLZ:
1810 return emit_op(compiler, op, 0, dst, dstw, TMP_REG1, 0, src, srcw);
1811 }
1812
1813 return SLJIT_SUCCESS;
1814 }
1815
1816 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op2(struct sljit_compiler *compiler, sljit_s32 op,
1817 sljit_s32 dst, sljit_sw dstw,
1818 sljit_s32 src1, sljit_sw src1w,
1819 sljit_s32 src2, sljit_sw src2w)
1820 {
1821 CHECK_ERROR();
1822 CHECK(check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w));
1823 ADJUST_LOCAL_OFFSET(dst, dstw);
1824 ADJUST_LOCAL_OFFSET(src1, src1w);
1825 ADJUST_LOCAL_OFFSET(src2, src2w);
1826
1827 if (dst == SLJIT_UNUSED && !HAS_FLAGS(op))
1828 return SLJIT_SUCCESS;
1829
1830 switch (GET_OPCODE(op)) {
1831 case SLJIT_ADD:
1832 case SLJIT_ADDC:
1833 case SLJIT_SUB:
1834 case SLJIT_SUBC:
1835 case SLJIT_OR:
1836 case SLJIT_XOR:
1837 return emit_op(compiler, op, ALLOW_IMM, dst, dstw, src1, src1w, src2, src2w);
1838
1839 case SLJIT_MUL:
1840 return emit_op(compiler, op, 0, dst, dstw, src1, src1w, src2, src2w);
1841
1842 case SLJIT_AND:
1843 return emit_op(compiler, op, ALLOW_ANY_IMM, dst, dstw, src1, src1w, src2, src2w);
1844
1845 case SLJIT_SHL:
1846 case SLJIT_LSHR:
1847 case SLJIT_ASHR:
1848 if (src2 & SLJIT_IMM) {
1849 compiler->shift_imm = src2w & 0x1f;
1850 return emit_op(compiler, op, 0, dst, dstw, TMP_REG1, 0, src1, src1w);
1851 }
1852 else {
1853 compiler->shift_imm = 0x20;
1854 return emit_op(compiler, op, 0, dst, dstw, src1, src1w, src2, src2w);
1855 }
1856 }
1857
1858 return SLJIT_SUCCESS;
1859 }
1860
1861 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_src(struct sljit_compiler *compiler, sljit_s32 op,
1862 sljit_s32 src, sljit_sw srcw)
1863 {
1864 CHECK_ERROR();
1865 CHECK(check_sljit_emit_op_src(compiler, op, src, srcw));
1866 ADJUST_LOCAL_OFFSET(src, srcw);
1867
1868 switch (op) {
1869 case SLJIT_FAST_RETURN:
1870 SLJIT_ASSERT(reg_map[TMP_REG2] == 14);
1871
1872 if (FAST_IS_REG(src))
1873 FAIL_IF(push_inst(compiler, MOV | RD(TMP_REG2) | RM(src)));
1874 else
1875 FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, TMP_REG2, src, srcw, TMP_REG1));
1876
1877 return push_inst(compiler, BX | RM(TMP_REG2));
1878 case SLJIT_SKIP_FRAMES_BEFORE_FAST_RETURN:
1879 return SLJIT_SUCCESS;
1880 case SLJIT_PREFETCH_L1:
1881 case SLJIT_PREFETCH_L2:
1882 case SLJIT_PREFETCH_L3:
1883 case SLJIT_PREFETCH_ONCE:
1884 #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
1885 SLJIT_ASSERT(src & SLJIT_MEM);
1886 return emit_op_mem(compiler, PRELOAD | LOAD_DATA, TMP_PC, src, srcw, TMP_REG1);
1887 #else /* !SLJIT_CONFIG_ARM_V7 */
1888 return SLJIT_SUCCESS;
1889 #endif /* SLJIT_CONFIG_ARM_V7 */
1890 }
1891
1892 return SLJIT_SUCCESS;
1893 }
1894
1895 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_register_index(sljit_s32 reg)
1896 {
1897 CHECK_REG_INDEX(check_sljit_get_register_index(reg));
1898 return reg_map[reg];
1899 }
1900
1901 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_float_register_index(sljit_s32 reg)
1902 {
1903 CHECK_REG_INDEX(check_sljit_get_float_register_index(reg));
1904 return (freg_map[reg] << 1);
1905 }
1906
1907 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_custom(struct sljit_compiler *compiler,
1908 void *instruction, sljit_s32 size)
1909 {
1910 CHECK_ERROR();
1911 CHECK(check_sljit_emit_op_custom(compiler, instruction, size));
1912
1913 return push_inst(compiler, *(sljit_uw*)instruction);
1914 }
1915
1916 /* --------------------------------------------------------------------- */
1917 /* Floating point operators */
1918 /* --------------------------------------------------------------------- */
1919
1920
1921 #define FPU_LOAD (1 << 20)
1922 #define EMIT_FPU_DATA_TRANSFER(inst, add, base, freg, offs) \
1923 ((inst) | ((add) << 23) | (reg_map[base] << 16) | (freg_map[freg] << 12) | (offs))
1924 #define EMIT_FPU_OPERATION(opcode, mode, dst, src1, src2) \
1925 ((opcode) | (mode) | (freg_map[dst] << 12) | freg_map[src1] | (freg_map[src2] << 16))
1926
1927 static sljit_s32 emit_fop_mem(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, sljit_s32 arg, sljit_sw argw)
1928 {
1929 sljit_uw imm;
1930 sljit_sw inst = VSTR_F32 | (flags & (SLJIT_F32_OP | FPU_LOAD));
1931
1932 SLJIT_ASSERT(arg & SLJIT_MEM);
1933 arg &= ~SLJIT_MEM;
1934
1935 if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) {
1936 FAIL_IF(push_inst(compiler, ADD | RD(TMP_REG2) | RN(arg & REG_MASK) | RM(OFFS_REG(arg)) | ((argw & 0x3) << 7)));
1937 arg = TMP_REG2;
1938 argw = 0;
1939 }
1940
1941 /* Fast loads and stores. */
1942 if (arg) {
1943 if (!(argw & ~0x3fc))
1944 return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 1, arg & REG_MASK, reg, argw >> 2));
1945 if (!(-argw & ~0x3fc))
1946 return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 0, arg & REG_MASK, reg, (-argw) >> 2));
1947
1948 imm = get_imm(argw & ~0x3fc);
1949 if (imm) {
1950 FAIL_IF(push_inst(compiler, ADD | RD(TMP_REG2) | RN(arg & REG_MASK) | imm));
1951 return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 1, TMP_REG2, reg, (argw & 0x3fc) >> 2));
1952 }
1953 imm = get_imm(-argw & ~0x3fc);
1954 if (imm) {
1955 argw = -argw;
1956 FAIL_IF(push_inst(compiler, SUB | RD(TMP_REG2) | RN(arg & REG_MASK) | imm));
1957 return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 0, TMP_REG2, reg, (argw & 0x3fc) >> 2));
1958 }
1959 }
1960
1961 if (arg) {
1962 FAIL_IF(load_immediate(compiler, TMP_REG2, argw));
1963 FAIL_IF(push_inst(compiler, ADD | RD(TMP_REG2) | RN(arg & REG_MASK) | RM(TMP_REG2)));
1964 }
1965 else
1966 FAIL_IF(load_immediate(compiler, TMP_REG2, argw));
1967
1968 return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 1, TMP_REG2, reg, 0));
1969 }
1970
1971 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_sw_from_f64(struct sljit_compiler *compiler, sljit_s32 op,
1972 sljit_s32 dst, sljit_sw dstw,
1973 sljit_s32 src, sljit_sw srcw)
1974 {
1975 op ^= SLJIT_F32_OP;
1976
1977 if (src & SLJIT_MEM) {
1978 FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, TMP_FREG1, src, srcw));
1979 src = TMP_FREG1;
1980 }
1981
1982 FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VCVT_S32_F32, op & SLJIT_F32_OP, TMP_FREG1, src, 0)));
1983
1984 if (FAST_IS_REG(dst))
1985 return push_inst(compiler, VMOV | (1 << 20) | RD(dst) | (freg_map[TMP_FREG1] << 16));
1986
1987 /* Store the integer value from a VFP register. */
1988 return emit_fop_mem(compiler, 0, TMP_FREG1, dst, dstw);
1989 }
1990
1991 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_f64_from_sw(struct sljit_compiler *compiler, sljit_s32 op,
1992 sljit_s32 dst, sljit_sw dstw,
1993 sljit_s32 src, sljit_sw srcw)
1994 {
1995 sljit_s32 dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1;
1996
1997 op ^= SLJIT_F32_OP;
1998
1999 if (FAST_IS_REG(src))
2000 FAIL_IF(push_inst(compiler, VMOV | RD(src) | (freg_map[TMP_FREG1] << 16)));
2001 else if (src & SLJIT_MEM) {
2002 /* Load the integer value into a VFP register. */
2003 FAIL_IF(emit_fop_mem(compiler, FPU_LOAD, TMP_FREG1, src, srcw));
2004 }
2005 else {
2006 FAIL_IF(load_immediate(compiler, TMP_REG1, srcw));
2007 FAIL_IF(push_inst(compiler, VMOV | RD(TMP_REG1) | (freg_map[TMP_FREG1] << 16)));
2008 }
2009
2010 FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VCVT_F32_S32, op & SLJIT_F32_OP, dst_r, TMP_FREG1, 0)));
2011
2012 if (dst & SLJIT_MEM)
2013 return emit_fop_mem(compiler, (op & SLJIT_F32_OP), TMP_FREG1, dst, dstw);
2014 return SLJIT_SUCCESS;
2015 }
2016
2017 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_cmp(struct sljit_compiler *compiler, sljit_s32 op,
2018 sljit_s32 src1, sljit_sw src1w,
2019 sljit_s32 src2, sljit_sw src2w)
2020 {
2021 op ^= SLJIT_F32_OP;
2022
2023 if (src1 & SLJIT_MEM) {
2024 FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, TMP_FREG1, src1, src1w));
2025 src1 = TMP_FREG1;
2026 }
2027
2028 if (src2 & SLJIT_MEM) {
2029 FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, TMP_FREG2, src2, src2w));
2030 src2 = TMP_FREG2;
2031 }
2032
2033 FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VCMP_F32, op & SLJIT_F32_OP, src1, src2, 0)));
2034 return push_inst(compiler, VMRS);
2035 }
2036
2037 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop1(struct sljit_compiler *compiler, sljit_s32 op,
2038 sljit_s32 dst, sljit_sw dstw,
2039 sljit_s32 src, sljit_sw srcw)
2040 {
2041 sljit_s32 dst_r;
2042
2043 CHECK_ERROR();
2044
2045 SLJIT_COMPILE_ASSERT((SLJIT_F32_OP == 0x100), float_transfer_bit_error);
2046 SELECT_FOP1_OPERATION_WITH_CHECKS(compiler, op, dst, dstw, src, srcw);
2047
2048 dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1;
2049
2050 if (GET_OPCODE(op) != SLJIT_CONV_F64_FROM_F32)
2051 op ^= SLJIT_F32_OP;
2052
2053 if (src & SLJIT_MEM) {
2054 FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, dst_r, src, srcw));
2055 src = dst_r;
2056 }
2057
2058 switch (GET_OPCODE(op)) {
2059 case SLJIT_MOV_F64:
2060 if (src != dst_r) {
2061 if (dst_r != TMP_FREG1)
2062 FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VMOV_F32, op & SLJIT_F32_OP, dst_r, src, 0)));
2063 else
2064 dst_r = src;
2065 }
2066 break;
2067 case SLJIT_NEG_F64:
2068 FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VNEG_F32, op & SLJIT_F32_OP, dst_r, src, 0)));
2069 break;
2070 case SLJIT_ABS_F64:
2071 FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VABS_F32, op & SLJIT_F32_OP, dst_r, src, 0)));
2072 break;
2073 case SLJIT_CONV_F64_FROM_F32:
2074 FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VCVT_F64_F32, op & SLJIT_F32_OP, dst_r, src, 0)));
2075 op ^= SLJIT_F32_OP;
2076 break;
2077 }
2078
2079 if (dst & SLJIT_MEM)
2080 return emit_fop_mem(compiler, (op & SLJIT_F32_OP), dst_r, dst, dstw);
2081 return SLJIT_SUCCESS;
2082 }
2083
2084 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop2(struct sljit_compiler *compiler, sljit_s32 op,
2085 sljit_s32 dst, sljit_sw dstw,
2086 sljit_s32 src1, sljit_sw src1w,
2087 sljit_s32 src2, sljit_sw src2w)
2088 {
2089 sljit_s32 dst_r;
2090
2091 CHECK_ERROR();
2092 CHECK(check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w));
2093 ADJUST_LOCAL_OFFSET(dst, dstw);
2094 ADJUST_LOCAL_OFFSET(src1, src1w);
2095 ADJUST_LOCAL_OFFSET(src2, src2w);
2096
2097 op ^= SLJIT_F32_OP;
2098
2099 dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1;
2100
2101 if (src2 & SLJIT_MEM) {
2102 FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, TMP_FREG2, src2, src2w));
2103 src2 = TMP_FREG2;
2104 }
2105
2106 if (src1 & SLJIT_MEM) {
2107 FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, TMP_FREG1, src1, src1w));
2108 src1 = TMP_FREG1;
2109 }
2110
2111 switch (GET_OPCODE(op)) {
2112 case SLJIT_ADD_F64:
2113 FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VADD_F32, op & SLJIT_F32_OP, dst_r, src2, src1)));
2114 break;
2115
2116 case SLJIT_SUB_F64:
2117 FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VSUB_F32, op & SLJIT_F32_OP, dst_r, src2, src1)));
2118 break;
2119
2120 case SLJIT_MUL_F64:
2121 FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VMUL_F32, op & SLJIT_F32_OP, dst_r, src2, src1)));
2122 break;
2123
2124 case SLJIT_DIV_F64:
2125 FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VDIV_F32, op & SLJIT_F32_OP, dst_r, src2, src1)));
2126 break;
2127 }
2128
2129 if (dst_r == TMP_FREG1)
2130 FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_F32_OP), TMP_FREG1, dst, dstw));
2131
2132 return SLJIT_SUCCESS;
2133 }
2134
2135 #undef FPU_LOAD
2136 #undef EMIT_FPU_DATA_TRANSFER
2137
2138 /* --------------------------------------------------------------------- */
2139 /* Other instructions */
2140 /* --------------------------------------------------------------------- */
2141
2142 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw)
2143 {
2144 CHECK_ERROR();
2145 CHECK(check_sljit_emit_fast_enter(compiler, dst, dstw));
2146 ADJUST_LOCAL_OFFSET(dst, dstw);
2147
2148 SLJIT_ASSERT(reg_map[TMP_REG2] == 14);
2149
2150 if (FAST_IS_REG(dst))
2151 return push_inst(compiler, MOV | RD(dst) | RM(TMP_REG2));
2152
2153 /* Memory. */
2154 return emit_op_mem(compiler, WORD_SIZE, TMP_REG2, dst, dstw, TMP_REG1);
2155 }
2156
2157 /* --------------------------------------------------------------------- */
2158 /* Conditional instructions */
2159 /* --------------------------------------------------------------------- */
2160
2161 static sljit_uw get_cc(struct sljit_compiler *compiler, sljit_s32 type)
2162 {
2163 switch (type) {
2164 case SLJIT_EQUAL:
2165 case SLJIT_EQUAL_F64:
2166 return 0x00000000;
2167
2168 case SLJIT_NOT_EQUAL:
2169 case SLJIT_NOT_EQUAL_F64:
2170 return 0x10000000;
2171
2172 case SLJIT_LESS:
2173 case SLJIT_LESS_F64:
2174 return 0x30000000;
2175
2176 case SLJIT_GREATER_EQUAL:
2177 case SLJIT_GREATER_EQUAL_F64:
2178 return 0x20000000;
2179
2180 case SLJIT_GREATER:
2181 case SLJIT_GREATER_F64:
2182 return 0x80000000;
2183
2184 case SLJIT_LESS_EQUAL:
2185 case SLJIT_LESS_EQUAL_F64:
2186 return 0x90000000;
2187
2188 case SLJIT_SIG_LESS:
2189 return 0xb0000000;
2190
2191 case SLJIT_SIG_GREATER_EQUAL:
2192 return 0xa0000000;
2193
2194 case SLJIT_SIG_GREATER:
2195 return 0xc0000000;
2196
2197 case SLJIT_SIG_LESS_EQUAL:
2198 return 0xd0000000;
2199
2200 case SLJIT_OVERFLOW:
2201 if (!(compiler->status_flags_state & SLJIT_CURRENT_FLAGS_ADD_SUB))
2202 return 0x10000000;
2203
2204 case SLJIT_UNORDERED_F64:
2205 return 0x60000000;
2206
2207 case SLJIT_NOT_OVERFLOW:
2208 if (!(compiler->status_flags_state & SLJIT_CURRENT_FLAGS_ADD_SUB))
2209 return 0x00000000;
2210
2211 case SLJIT_ORDERED_F64:
2212 return 0x70000000;
2213
2214 default:
2215 SLJIT_ASSERT(type >= SLJIT_JUMP && type <= SLJIT_CALL_CDECL);
2216 return 0xe0000000;
2217 }
2218 }
2219
2220 SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler)
2221 {
2222 struct sljit_label *label;
2223
2224 CHECK_ERROR_PTR();
2225 CHECK_PTR(check_sljit_emit_label(compiler));
2226
2227 if (compiler->last_label && compiler->last_label->size == compiler->size)
2228 return compiler->last_label;
2229
2230 label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label));
2231 PTR_FAIL_IF(!label);
2232 set_label(label, compiler);
2233 return label;
2234 }
2235
2236 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, sljit_s32 type)
2237 {
2238 struct sljit_jump *jump;
2239
2240 CHECK_ERROR_PTR();
2241 CHECK_PTR(check_sljit_emit_jump(compiler, type));
2242
2243 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
2244 PTR_FAIL_IF(!jump);
2245 set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
2246 type &= 0xff;
2247
2248 SLJIT_ASSERT(reg_map[TMP_REG1] != 14);
2249
2250 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2251 if (type >= SLJIT_FAST_CALL)
2252 PTR_FAIL_IF(prepare_blx(compiler));
2253 PTR_FAIL_IF(push_inst_with_unique_literal(compiler, ((EMIT_DATA_TRANSFER(WORD_SIZE | LOAD_DATA, 1,
2254 type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, TMP_PC, 0)) & ~COND_MASK) | get_cc(compiler, type), 0));
2255
2256 if (jump->flags & SLJIT_REWRITABLE_JUMP) {
2257 jump->addr = compiler->size;
2258 compiler->patches++;
2259 }
2260
2261 if (type >= SLJIT_FAST_CALL) {
2262 jump->flags |= IS_BL;
2263 PTR_FAIL_IF(emit_blx(compiler));
2264 }
2265
2266 if (!(jump->flags & SLJIT_REWRITABLE_JUMP))
2267 jump->addr = compiler->size;
2268 #else
2269 if (type >= SLJIT_FAST_CALL)
2270 jump->flags |= IS_BL;
2271 PTR_FAIL_IF(emit_imm(compiler, TMP_REG1, 0));
2272 PTR_FAIL_IF(push_inst(compiler, (((type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1)) & ~COND_MASK) | get_cc(compiler, type)));
2273 jump->addr = compiler->size;
2274 #endif
2275 return jump;
2276 }
2277
2278 #ifdef __SOFTFP__
2279
2280 static sljit_s32 softfloat_call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types, sljit_s32 *src)
2281 {
2282 sljit_s32 stack_offset = 0;
2283 sljit_s32 arg_count = 0;
2284 sljit_s32 word_arg_offset = 0;
2285 sljit_s32 float_arg_count = 0;
2286 sljit_s32 types = 0;
2287 sljit_s32 src_offset = 4 * sizeof(sljit_sw);
2288 sljit_u8 offsets[4];
2289
2290 if (src && FAST_IS_REG(*src))
2291 src_offset = reg_map[*src] * sizeof(sljit_sw);
2292
2293 arg_types >>= SLJIT_DEF_SHIFT;
2294
2295 while (arg_types) {
2296 types = (types << SLJIT_DEF_SHIFT) | (arg_types & SLJIT_DEF_MASK);
2297
2298 switch (arg_types & SLJIT_DEF_MASK) {
2299 case SLJIT_ARG_TYPE_F32:
2300 offsets[arg_count] = (sljit_u8)stack_offset;
2301 stack_offset += sizeof(sljit_f32);
2302 arg_count++;
2303 float_arg_count++;
2304 break;
2305 case SLJIT_ARG_TYPE_F64:
2306 if (stack_offset & 0x7)
2307 stack_offset += sizeof(sljit_sw);
2308 offsets[arg_count] = (sljit_u8)stack_offset;
2309 stack_offset += sizeof(sljit_f64);
2310 arg_count++;
2311 float_arg_count++;
2312 break;
2313 default:
2314 offsets[arg_count] = (sljit_u8)stack_offset;
2315 stack_offset += sizeof(sljit_sw);
2316 arg_count++;
2317 word_arg_offset += sizeof(sljit_sw);
2318 break;
2319 }
2320
2321 arg_types >>= SLJIT_DEF_SHIFT;
2322 }
2323
2324 if (stack_offset > 16)
2325 FAIL_IF(push_inst(compiler, SUB | RD(SLJIT_SP) | RN(SLJIT_SP) | SRC2_IMM | (((stack_offset - 16) + 0x7) & ~0x7)));
2326
2327 /* Process arguments in reversed direction. */
2328 while (types) {
2329 switch (types & SLJIT_DEF_MASK) {
2330 case SLJIT_ARG_TYPE_F32:
2331 arg_count--;
2332 float_arg_count--;
2333 stack_offset = offsets[arg_count];
2334
2335 if (stack_offset < 16) {
2336 if (src_offset == stack_offset) {
2337 FAIL_IF(push_inst(compiler, MOV | RD(TMP_REG1) | (src_offset >> 2)));
2338 *src = TMP_REG1;
2339 }
2340 FAIL_IF(push_inst(compiler, VMOV | 0x100000 | (float_arg_count << 16) | (stack_offset << 10)));
2341 } else
2342 FAIL_IF(push_inst(compiler, VSTR_F32 | 0x800000 | RN(SLJIT_SP) | (float_arg_count << 12) | ((stack_offset - 16) >> 2)));
2343 break;
2344 case SLJIT_ARG_TYPE_F64:
2345 arg_count--;
2346 float_arg_count--;
2347 stack_offset = offsets[arg_count];
2348
2349 SLJIT_ASSERT((stack_offset & 0x7) == 0);
2350
2351 if (stack_offset < 16) {
2352 if (src_offset == stack_offset || src_offset == stack_offset + sizeof(sljit_sw)) {
2353 FAIL_IF(push_inst(compiler, MOV | RD(TMP_REG1) | (src_offset >> 2)));
2354 *src = TMP_REG1;
2355 }
2356 FAIL_IF(push_inst(compiler, VMOV2 | 0x100000 | (stack_offset << 10) | ((stack_offset + sizeof(sljit_sw)) << 14) | float_arg_count));
2357 } else
2358 FAIL_IF(push_inst(compiler, VSTR_F32 | 0x800100 | RN(SLJIT_SP) | (float_arg_count << 12) | ((stack_offset - 16) >> 2)));
2359 break;
2360 default:
2361 arg_count--;
2362 word_arg_offset -= sizeof(sljit_sw);
2363 stack_offset = offsets[arg_count];
2364
2365 SLJIT_ASSERT(stack_offset >= word_arg_offset);
2366
2367 if (stack_offset != word_arg_offset) {
2368 if (stack_offset < 16) {
2369 if (src_offset == stack_offset) {
2370 FAIL_IF(push_inst(compiler, MOV | RD(TMP_REG1) | (src_offset >> 2)));
2371 *src = TMP_REG1;
2372 }
2373 else if (src_offset == word_arg_offset) {
2374 *src = 1 + (stack_offset >> 2);
2375 src_offset = stack_offset;
2376 }
2377 FAIL_IF(push_inst(compiler, MOV | (stack_offset << 10) | (word_arg_offset >> 2)));
2378 } else
2379 FAIL_IF(push_inst(compiler, data_transfer_insts[WORD_SIZE] | 0x800000 | RN(SLJIT_SP) | (word_arg_offset << 10) | (stack_offset - 16)));
2380 }
2381 break;
2382 }
2383
2384 types >>= SLJIT_DEF_SHIFT;
2385 }
2386
2387 return SLJIT_SUCCESS;
2388 }
2389
2390 static sljit_s32 softfloat_post_call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types)
2391 {
2392 sljit_s32 stack_size = 0;
2393
2394 if ((arg_types & SLJIT_DEF_MASK) == SLJIT_ARG_TYPE_F32)
2395 FAIL_IF(push_inst(compiler, VMOV | (0 << 16) | (0 << 12)));
2396 if ((arg_types & SLJIT_DEF_MASK) == SLJIT_ARG_TYPE_F64)
2397 FAIL_IF(push_inst(compiler, VMOV2 | (1 << 16) | (0 << 12) | 0));
2398
2399 arg_types >>= SLJIT_DEF_SHIFT;
2400
2401 while (arg_types) {
2402 switch (arg_types & SLJIT_DEF_MASK) {
2403 case SLJIT_ARG_TYPE_F32:
2404 stack_size += sizeof(sljit_f32);
2405 break;
2406 case SLJIT_ARG_TYPE_F64:
2407 if (stack_size & 0x7)
2408 stack_size += sizeof(sljit_sw);
2409 stack_size += sizeof(sljit_f64);
2410 break;
2411 default:
2412 stack_size += sizeof(sljit_sw);
2413 break;
2414 }
2415
2416 arg_types >>= SLJIT_DEF_SHIFT;
2417 }
2418
2419 if (stack_size <= 16)
2420 return SLJIT_SUCCESS;
2421
2422 return push_inst(compiler, ADD | RD(SLJIT_SP) | RN(SLJIT_SP) | SRC2_IMM | (((stack_size - 16) + 0x7) & ~0x7));
2423 }
2424
2425 #else /* !__SOFTFP__ */
2426
2427 static sljit_s32 hardfloat_call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types)
2428 {
2429 sljit_u32 remap = 0;
2430 sljit_u32 offset = 0;
2431 sljit_u32 new_offset, mask;
2432
2433 /* Remove return value. */
2434 arg_types >>= SLJIT_DEF_SHIFT;
2435
2436 while (arg_types) {
2437 if ((arg_types & SLJIT_DEF_MASK) == SLJIT_ARG_TYPE_F32) {
2438 new_offset = 0;
2439 mask = 1;
2440
2441 while (remap & mask) {
2442 new_offset++;
2443 mask <<= 1;
2444 }
2445 remap |= mask;
2446
2447 if (offset != new_offset)
2448 FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VMOV_F32,
2449 0, (new_offset >> 1) + 1, (offset >> 1) + 1, 0) | ((new_offset & 0x1) ? 0x400000 : 0)));
2450
2451 offset += 2;
2452 }
2453 else if ((arg_types & SLJIT_DEF_MASK) == SLJIT_ARG_TYPE_F64) {
2454 new_offset = 0;
2455 mask = 3;
2456
2457 while (remap & mask) {
2458 new_offset += 2;
2459 mask <<= 2;
2460 }
2461 remap |= mask;
2462
2463 if (offset != new_offset)
2464 FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VMOV_F32, SLJIT_F32_OP, (new_offset >> 1) + 1, (offset >> 1) + 1, 0)));
2465
2466 offset += 2;
2467 }
2468 arg_types >>= SLJIT_DEF_SHIFT;
2469 }
2470
2471 return SLJIT_SUCCESS;
2472 }
2473
2474 #endif /* __SOFTFP__ */
2475
2476 #undef EMIT_FPU_OPERATION
2477
2478 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_call(struct sljit_compiler *compiler, sljit_s32 type,
2479 sljit_s32 arg_types)
2480 {
2481 #ifdef __SOFTFP__
2482 struct sljit_jump *jump;
2483 #endif
2484
2485 CHECK_ERROR_PTR();
2486 CHECK_PTR(check_sljit_emit_call(compiler, type, arg_types));
2487
2488 #ifdef __SOFTFP__
2489 PTR_FAIL_IF(softfloat_call_with_args(compiler, arg_types, NULL));
2490
2491 #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \
2492 || (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS)
2493 compiler->skip_checks = 1;
2494 #endif
2495
2496 jump = sljit_emit_jump(compiler, type);
2497 PTR_FAIL_IF(jump == NULL);
2498
2499 PTR_FAIL_IF(softfloat_post_call_with_args(compiler, arg_types));
2500 return jump;
2501 #else /* !__SOFTFP__ */
2502 PTR_FAIL_IF(hardfloat_call_with_args(compiler, arg_types));
2503
2504 #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \
2505 || (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS)
2506 compiler->skip_checks = 1;
2507 #endif
2508
2509 return sljit_emit_jump(compiler, type);
2510 #endif /* __SOFTFP__ */
2511 }
2512
2513 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_ijump(struct sljit_compiler *compiler, sljit_s32 type, sljit_s32 src, sljit_sw srcw)
2514 {
2515 struct sljit_jump *jump;
2516
2517 CHECK_ERROR();
2518 CHECK(check_sljit_emit_ijump(compiler, type, src, srcw));
2519 ADJUST_LOCAL_OFFSET(src, srcw);
2520
2521 SLJIT_ASSERT(reg_map[TMP_REG1] != 14);
2522
2523 if (!(src & SLJIT_IMM)) {
2524 if (FAST_IS_REG(src)) {
2525 SLJIT_ASSERT(reg_map[src] != 14);
2526 return push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(src));
2527 }
2528
2529 SLJIT_ASSERT(src & SLJIT_MEM);
2530 FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, TMP_REG1, src, srcw, TMP_REG1));
2531 return push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1));
2532 }
2533
2534 /* These jumps are converted to jump/call instructions when possible. */
2535 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
2536 FAIL_IF(!jump);
2537 set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_BL : 0));
2538 jump->u.target = srcw;
2539
2540 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2541 if (type >= SLJIT_FAST_CALL)
2542 FAIL_IF(prepare_blx(compiler));
2543 FAIL_IF(push_inst_with_unique_literal(compiler, EMIT_DATA_TRANSFER(WORD_SIZE | LOAD_DATA, 1, type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, TMP_PC, 0), 0));
2544 if (type >= SLJIT_FAST_CALL)
2545 FAIL_IF(emit_blx(compiler));
2546 #else
2547 FAIL_IF(emit_imm(compiler, TMP_REG1, 0));
2548 FAIL_IF(push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1)));
2549 #endif
2550 jump->addr = compiler->size;
2551 return SLJIT_SUCCESS;
2552 }
2553
2554 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_icall(struct sljit_compiler *compiler, sljit_s32 type,
2555 sljit_s32 arg_types,
2556 sljit_s32 src, sljit_sw srcw)
2557 {
2558 CHECK_ERROR();
2559 CHECK(check_sljit_emit_icall(compiler, type, arg_types, src, srcw));
2560
2561 #ifdef __SOFTFP__
2562 if (src & SLJIT_MEM) {
2563 FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, TMP_REG1, src, srcw, TMP_REG1));
2564 src = TMP_REG1;
2565 }
2566
2567 FAIL_IF(softfloat_call_with_args(compiler, arg_types, &src));
2568
2569 #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \
2570 || (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS)
2571 compiler->skip_checks = 1;
2572 #endif
2573
2574 FAIL_IF(sljit_emit_ijump(compiler, type, src, srcw));
2575
2576 return softfloat_post_call_with_args(compiler, arg_types);
2577 #else /* !__SOFTFP__ */
2578 FAIL_IF(hardfloat_call_with_args(compiler, arg_types));
2579
2580 #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \
2581 || (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS)
2582 compiler->skip_checks = 1;
2583 #endif
2584
2585 return sljit_emit_ijump(compiler, type, src, srcw);
2586 #endif /* __SOFTFP__ */
2587 }
2588
2589 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_flags(struct sljit_compiler *compiler, sljit_s32 op,
2590 sljit_s32 dst, sljit_sw dstw,
2591 sljit_s32 type)
2592 {
2593 sljit_s32 dst_reg, flags = GET_ALL_FLAGS(op);
2594 sljit_uw cc, ins;
2595
2596 CHECK_ERROR();
2597 CHECK(check_sljit_emit_op_flags(compiler, op, dst, dstw, type));
2598 ADJUST_LOCAL_OFFSET(dst, dstw);
2599
2600 op = GET_OPCODE(op);
2601 cc = get_cc(compiler, type & 0xff);
2602 dst_reg = FAST_IS_REG(dst) ? dst : TMP_REG1;
2603
2604 if (op < SLJIT_ADD) {
2605 FAIL_IF(push_inst(compiler, MOV | RD(dst_reg) | SRC2_IMM | 0));
2606 FAIL_IF(push_inst(compiler, ((MOV | RD(dst_reg) | SRC2_IMM | 1) & ~COND_MASK) | cc));
2607 if (dst & SLJIT_MEM)
2608 return emit_op_mem(compiler, WORD_SIZE, TMP_REG1, dst, dstw, TMP_REG2);
2609 return SLJIT_SUCCESS;
2610 }
2611
2612 ins = (op == SLJIT_AND ? AND : (op == SLJIT_OR ? ORR : EOR));
2613
2614 if (dst & SLJIT_MEM)
2615 FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, TMP_REG1, dst, dstw, TMP_REG2));
2616
2617 FAIL_IF(push_inst(compiler, ((ins | RD(dst_reg) | RN(dst_reg) | SRC2_IMM | 1) & ~COND_MASK) | cc));
2618
2619 if (op == SLJIT_AND)
2620 FAIL_IF(push_inst(compiler, ((ins | RD(dst_reg) | RN(dst_reg) | SRC2_IMM | 0) & ~COND_MASK) | (cc ^ 0x10000000)));
2621
2622 if (dst & SLJIT_MEM)
2623 FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG1, dst, dstw, TMP_REG2));
2624
2625 if (flags & SLJIT_SET_Z)
2626 return push_inst(compiler, MOV | SET_FLAGS | RD(TMP_REG2) | RM(dst_reg));
2627 return SLJIT_SUCCESS;
2628 }
2629
2630 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_cmov(struct sljit_compiler *compiler, sljit_s32 type,
2631 sljit_s32 dst_reg,
2632 sljit_s32 src, sljit_sw srcw)
2633 {
2634 sljit_uw cc, tmp;
2635
2636 CHECK_ERROR();
2637 CHECK(check_sljit_emit_cmov(compiler, type, dst_reg, src, srcw));
2638
2639 dst_reg &= ~SLJIT_I32_OP;
2640
2641 cc = get_cc(compiler, type & 0xff);
2642
2643 if (SLJIT_UNLIKELY(src & SLJIT_IMM)) {
2644 tmp = get_imm(srcw);
2645 if (tmp)
2646 return push_inst(compiler, ((MOV | RD(dst_reg) | tmp) & ~COND_MASK) | cc);
2647
2648 tmp = get_imm(~srcw);
2649 if (tmp)
2650 return push_inst(compiler, ((MVN | RD(dst_reg) | tmp) & ~COND_MASK) | cc);
2651
2652 #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
2653 tmp = (sljit_uw) srcw;
2654 FAIL_IF(push_inst(compiler, (MOVW & ~COND_MASK) | cc | RD(dst_reg) | ((tmp << 4) & 0xf0000) | (tmp & 0xfff)));
2655 if (tmp <= 0xffff)
2656 return SLJIT_SUCCESS;
2657 return push_inst(compiler, (MOVT & ~COND_MASK) | cc | RD(dst_reg) | ((tmp >> 12) & 0xf0000) | ((tmp >> 16) & 0xfff));
2658 #else
2659 FAIL_IF(load_immediate(compiler, TMP_REG1, srcw));
2660 src = TMP_REG1;
2661 #endif
2662 }
2663
2664 return push_inst(compiler, ((MOV | RD(dst_reg) | RM(src)) & ~COND_MASK) | cc);
2665 }
2666
2667 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_mem(struct sljit_compiler *compiler, sljit_s32 type,
2668 sljit_s32 reg,
2669 sljit_s32 mem, sljit_sw memw)
2670 {
2671 sljit_s32 flags;
2672 sljit_uw is_type1_transfer, inst;
2673
2674 CHECK_ERROR();
2675 CHECK(check_sljit_emit_mem(compiler, type, reg, mem, memw));
2676
2677 is_type1_transfer = 1;
2678
2679 switch (type & 0xff) {
2680 case SLJIT_MOV:
2681 case SLJIT_MOV_U32:
2682 case SLJIT_MOV_S32:
2683 case SLJIT_MOV_P:
2684 flags = WORD_SIZE;
2685 break;
2686 case SLJIT_MOV_U8:
2687 flags = BYTE_SIZE;
2688 break;
2689 case SLJIT_MOV_S8:
2690 if (!(type & SLJIT_MEM_STORE))
2691 is_type1_transfer = 0;
2692 flags = BYTE_SIZE | SIGNED;
2693 break;
2694 case SLJIT_MOV_U16:
2695 is_type1_transfer = 0;
2696 flags = HALF_SIZE;
2697 break;
2698 case SLJIT_MOV_S16:
2699 is_type1_transfer = 0;
2700 flags = HALF_SIZE | SIGNED;
2701 break;
2702 default:
2703 SLJIT_UNREACHABLE();
2704 flags = WORD_SIZE;
2705 break;
2706 }
2707
2708 if (!(type & SLJIT_MEM_STORE))
2709 flags |= LOAD_DATA;
2710
2711 SLJIT_ASSERT(is_type1_transfer == !!IS_TYPE1_TRANSFER(flags));
2712
2713 if (SLJIT_UNLIKELY(mem & OFFS_REG_MASK)) {
2714 if (!is_type1_transfer && memw != 0)
2715 return SLJIT_ERR_UNSUPPORTED;
2716 }
2717 else {
2718 if (is_type1_transfer) {
2719 if (memw > 4095 || memw < -4095)
2720 return SLJIT_ERR_UNSUPPORTED;
2721 }
2722 else {
2723 if (memw > 255 || memw < -255)
2724 return SLJIT_ERR_UNSUPPORTED;
2725 }
2726 }
2727
2728 if (type & SLJIT_MEM_SUPP)
2729 return SLJIT_SUCCESS;
2730
2731 if (SLJIT_UNLIKELY(mem & OFFS_REG_MASK)) {
2732 memw &= 0x3;
2733
2734 inst = EMIT_DATA_TRANSFER(flags, 1, reg, mem & REG_MASK, RM(OFFS_REG(mem)) | (memw << 7));
2735
2736 if (is_type1_transfer)
2737 inst |= (1 << 25);
2738
2739 if (type & SLJIT_MEM_PRE)
2740 inst |= (1 << 21);
2741 else
2742 inst ^= (1 << 24);
2743
2744 return push_inst(compiler, inst);
2745 }
2746
2747 inst = EMIT_DATA_TRANSFER(flags, 0, reg, mem & REG_MASK, 0);
2748
2749 if (type & SLJIT_MEM_PRE)
2750 inst |= (1 << 21);
2751 else
2752 inst ^= (1 << 24);
2753
2754 if (is_type1_transfer) {
2755 if (memw >= 0)
2756 inst |= (1 << 23);
2757 else
2758 memw = -memw;
2759
2760 return push_inst(compiler, inst | memw);
2761 }
2762
2763 if (memw >= 0)
2764 inst |= (1 << 23);
2765 else
2766 memw = -memw;
2767
2768 return push_inst(compiler, inst | TYPE2_TRANSFER_IMM(memw));
2769 }
2770
2771 SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw, sljit_sw init_value)
2772 {
2773 struct sljit_const *const_;
2774 sljit_s32 dst_r;
2775
2776 CHECK_ERROR_PTR();
2777 CHECK_PTR(check_sljit_emit_const(compiler, dst, dstw, init_value));
2778 ADJUST_LOCAL_OFFSET(dst, dstw);
2779
2780 dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG2;
2781
2782 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2783 PTR_FAIL_IF(push_inst_with_unique_literal(compiler, EMIT_DATA_TRANSFER(WORD_SIZE | LOAD_DATA, 1, dst_r, TMP_PC, 0), init_value));
2784 compiler->patches++;
2785 #else
2786 PTR_FAIL_IF(emit_imm(compiler, dst_r, init_value));
2787 #endif
2788
2789 const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const));
2790 PTR_FAIL_IF(!const_);
2791 set_const(const_, compiler);
2792
2793 if (dst & SLJIT_MEM)
2794 PTR_FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG2, dst, dstw, TMP_REG1));
2795 return const_;
2796 }
2797
2798 SLJIT_API_FUNC_ATTRIBUTE struct sljit_put_label* sljit_emit_put_label(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw)
2799 {
2800 struct sljit_put_label *put_label;
2801 sljit_s32 dst_r;
2802
2803 CHECK_ERROR_PTR();
2804 CHECK_PTR(check_sljit_emit_put_label(compiler, dst, dstw));
2805 ADJUST_LOCAL_OFFSET(dst, dstw);
2806
2807 dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG2;
2808
2809 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2810 PTR_FAIL_IF(push_inst_with_unique_literal(compiler, EMIT_DATA_TRANSFER(WORD_SIZE | LOAD_DATA, 1, dst_r, TMP_PC, 0), 0));
2811 compiler->patches++;
2812 #else
2813 PTR_FAIL_IF(emit_imm(compiler, dst_r, 0));
2814 #endif
2815
2816 put_label = (struct sljit_put_label*)ensure_abuf(compiler, sizeof(struct sljit_put_label));
2817 PTR_FAIL_IF(!put_label);
2818 set_put_label(put_label, compiler, 0);
2819
2820 if (dst & SLJIT_MEM)
2821 PTR_FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG2, dst, dstw, TMP_REG1));
2822 return put_label;
2823 }
2824
2825 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_target, sljit_sw executable_offset)
2826 {
2827 inline_set_jump_addr(addr, executable_offset, new_target, 1);
2828 }
2829
2830 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant, sljit_sw executable_offset)
2831 {
2832 inline_set_const(addr, executable_offset, new_constant, 1);
2833 }
Platform independent low-level JIT compiler (github mirror, with mob branch)