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Cmov fix for ARM-32 and ARM-64.
[sljit.git] / sljit_src / sljitNativeARM_64.c
blobfd67f502536b1eaaad812a0881e1b57c5e877311
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 SLJIT_API_FUNC_ATTRIBUTE const char* sljit_get_platform_name(void)
28 {
29 return "ARM-64" SLJIT_CPUINFO;
30 }
31
32 /* Length of an instruction word */
33 typedef sljit_u32 sljit_ins;
34
35 #define TMP_ZERO (0)
36
37 #define TMP_REG1 (SLJIT_NUMBER_OF_REGISTERS + 2)
38 #define TMP_REG2 (SLJIT_NUMBER_OF_REGISTERS + 3)
39 #define TMP_REG3 (SLJIT_NUMBER_OF_REGISTERS + 4)
40 #define TMP_LR (SLJIT_NUMBER_OF_REGISTERS + 5)
41 #define TMP_SP (SLJIT_NUMBER_OF_REGISTERS + 6)
42
43 #define TMP_FREG1 (0)
44 #define TMP_FREG2 (SLJIT_NUMBER_OF_FLOAT_REGISTERS + 1)
45
46 static const sljit_u8 reg_map[SLJIT_NUMBER_OF_REGISTERS + 8] = {
47 31, 0, 1, 2, 3, 4, 5, 6, 7, 12, 13, 14, 15, 16, 17, 8, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 29, 9, 10, 11, 30, 31
48 };
49
50 #define W_OP (1 << 31)
51 #define RD(rd) (reg_map[rd])
52 #define RT(rt) (reg_map[rt])
53 #define RN(rn) (reg_map[rn] << 5)
54 #define RT2(rt2) (reg_map[rt2] << 10)
55 #define RM(rm) (reg_map[rm] << 16)
56 #define VD(vd) (vd)
57 #define VT(vt) (vt)
58 #define VN(vn) ((vn) << 5)
59 #define VM(vm) ((vm) << 16)
60
61 /* --------------------------------------------------------------------- */
62 /* Instrucion forms */
63 /* --------------------------------------------------------------------- */
64
65 #define ADC 0x9a000000
66 #define ADD 0x8b000000
67 #define ADDI 0x91000000
68 #define AND 0x8a000000
69 #define ANDI 0x92000000
70 #define ASRV 0x9ac02800
71 #define B 0x14000000
72 #define B_CC 0x54000000
73 #define BL 0x94000000
74 #define BLR 0xd63f0000
75 #define BR 0xd61f0000
76 #define BRK 0xd4200000
77 #define CBZ 0xb4000000
78 #define CLZ 0xdac01000
79 #define CSEL 0x9a800000
80 #define CSINC 0x9a800400
81 #define EOR 0xca000000
82 #define EORI 0xd2000000
83 #define FABS 0x1e60c000
84 #define FADD 0x1e602800
85 #define FCMP 0x1e602000
86 #define FCVT 0x1e224000
87 #define FCVTZS 0x9e780000
88 #define FDIV 0x1e601800
89 #define FMOV 0x1e604000
90 #define FMUL 0x1e600800
91 #define FNEG 0x1e614000
92 #define FSUB 0x1e603800
93 #define LDRI 0xf9400000
94 #define LDP 0xa9400000
95 #define LDP_PST 0xa8c00000
96 #define LSLV 0x9ac02000
97 #define LSRV 0x9ac02400
98 #define MADD 0x9b000000
99 #define MOVK 0xf2800000
100 #define MOVN 0x92800000
101 #define MOVZ 0xd2800000
102 #define NOP 0xd503201f
103 #define ORN 0xaa200000
104 #define ORR 0xaa000000
105 #define ORRI 0xb2000000
106 #define RET 0xd65f0000
107 #define SBC 0xda000000
108 #define SBFM 0x93000000
109 #define SCVTF 0x9e620000
110 #define SDIV 0x9ac00c00
111 #define SMADDL 0x9b200000
112 #define SMULH 0x9b403c00
113 #define STP 0xa9000000
114 #define STP_PRE 0xa9800000
115 #define STRI 0xf9000000
116 #define STR_FI 0x3d000000
117 #define STR_FR 0x3c206800
118 #define STUR_FI 0x3c000000
119 #define SUB 0xcb000000
120 #define SUBI 0xd1000000
121 #define SUBS 0xeb000000
122 #define UBFM 0xd3000000
123 #define UDIV 0x9ac00800
124 #define UMULH 0x9bc03c00
125
126 /* dest_reg is the absolute name of the register
127 Useful for reordering instructions in the delay slot. */
128 static sljit_s32 push_inst(struct sljit_compiler *compiler, sljit_ins ins)
129 {
130 sljit_ins *ptr = (sljit_ins*)ensure_buf(compiler, sizeof(sljit_ins));
131 FAIL_IF(!ptr);
132 *ptr = ins;
133 compiler->size++;
134 return SLJIT_SUCCESS;
135 }
136
137 static SLJIT_INLINE sljit_s32 emit_imm64_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_uw imm)
138 {
139 FAIL_IF(push_inst(compiler, MOVZ | RD(dst) | ((imm & 0xffff) << 5)));
140 FAIL_IF(push_inst(compiler, MOVK | RD(dst) | (((imm >> 16) & 0xffff) << 5) | (1 << 21)));
141 FAIL_IF(push_inst(compiler, MOVK | RD(dst) | (((imm >> 32) & 0xffff) << 5) | (2 << 21)));
142 return push_inst(compiler, MOVK | RD(dst) | ((imm >> 48) << 5) | (3 << 21));
143 }
144
145 static SLJIT_INLINE void modify_imm64_const(sljit_ins* inst, sljit_uw new_imm)
146 {
147 sljit_s32 dst = inst[0] & 0x1f;
148 SLJIT_ASSERT((inst[0] & 0xffe00000) == MOVZ && (inst[1] & 0xffe00000) == (MOVK | (1 << 21)));
149 inst[0] = MOVZ | dst | ((new_imm & 0xffff) << 5);
150 inst[1] = MOVK | dst | (((new_imm >> 16) & 0xffff) << 5) | (1 << 21);
151 inst[2] = MOVK | dst | (((new_imm >> 32) & 0xffff) << 5) | (2 << 21);
152 inst[3] = MOVK | dst | ((new_imm >> 48) << 5) | (3 << 21);
153 }
154
155 static SLJIT_INLINE sljit_s32 detect_jump_type(struct sljit_jump *jump, sljit_ins *code_ptr, sljit_ins *code, sljit_sw executable_offset)
156 {
157 sljit_sw diff;
158 sljit_uw target_addr;
159
160 if (jump->flags & SLJIT_REWRITABLE_JUMP) {
161 jump->flags |= PATCH_ABS64;
162 return 0;
163 }
164
165 if (jump->flags & JUMP_ADDR)
166 target_addr = jump->u.target;
167 else {
168 SLJIT_ASSERT(jump->flags & JUMP_LABEL);
169 target_addr = (sljit_uw)(code + jump->u.label->size) + (sljit_uw)executable_offset;
170 }
171
172 diff = (sljit_sw)target_addr - (sljit_sw)(code_ptr + 4) - executable_offset;
173
174 if (jump->flags & IS_COND) {
175 diff += sizeof(sljit_ins);
176 if (diff <= 0xfffff && diff >= -0x100000) {
177 code_ptr[-5] ^= (jump->flags & IS_CBZ) ? (0x1 << 24) : 0x1;
178 jump->addr -= sizeof(sljit_ins);
179 jump->flags |= PATCH_COND;
180 return 5;
181 }
182 diff -= sizeof(sljit_ins);
183 }
184
185 if (diff <= 0x7ffffff && diff >= -0x8000000) {
186 jump->flags |= PATCH_B;
187 return 4;
188 }
189
190 if (target_addr <= 0xffffffffl) {
191 if (jump->flags & IS_COND)
192 code_ptr[-5] -= (2 << 5);
193 code_ptr[-2] = code_ptr[0];
194 return 2;
195 }
196 if (target_addr <= 0xffffffffffffl) {
197 if (jump->flags & IS_COND)
198 code_ptr[-5] -= (1 << 5);
199 jump->flags |= PATCH_ABS48;
200 code_ptr[-1] = code_ptr[0];
201 return 1;
202 }
203
204 jump->flags |= PATCH_ABS64;
205 return 0;
206 }
207
208 SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler)
209 {
210 struct sljit_memory_fragment *buf;
211 sljit_ins *code;
212 sljit_ins *code_ptr;
213 sljit_ins *buf_ptr;
214 sljit_ins *buf_end;
215 sljit_uw word_count;
216 sljit_sw executable_offset;
217 sljit_uw addr;
218 sljit_s32 dst;
219
220 struct sljit_label *label;
221 struct sljit_jump *jump;
222 struct sljit_const *const_;
223
224 CHECK_ERROR_PTR();
225 CHECK_PTR(check_sljit_generate_code(compiler));
226 reverse_buf(compiler);
227
228 code = (sljit_ins*)SLJIT_MALLOC_EXEC(compiler->size * sizeof(sljit_ins));
229 PTR_FAIL_WITH_EXEC_IF(code);
230 buf = compiler->buf;
231
232 code_ptr = code;
233 word_count = 0;
234 executable_offset = SLJIT_EXEC_OFFSET(code);
235
236 label = compiler->labels;
237 jump = compiler->jumps;
238 const_ = compiler->consts;
239
240 do {
241 buf_ptr = (sljit_ins*)buf->memory;
242 buf_end = buf_ptr + (buf->used_size >> 2);
243 do {
244 *code_ptr = *buf_ptr++;
245 /* These structures are ordered by their address. */
246 SLJIT_ASSERT(!label || label->size >= word_count);
247 SLJIT_ASSERT(!jump || jump->addr >= word_count);
248 SLJIT_ASSERT(!const_ || const_->addr >= word_count);
249 if (label && label->size == word_count) {
250 label->addr = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset);
251 label->size = code_ptr - code;
252 label = label->next;
253 }
254 if (jump && jump->addr == word_count) {
255 jump->addr = (sljit_uw)(code_ptr - 4);
256 code_ptr -= detect_jump_type(jump, code_ptr, code, executable_offset);
257 jump = jump->next;
258 }
259 if (const_ && const_->addr == word_count) {
260 const_->addr = (sljit_uw)code_ptr;
261 const_ = const_->next;
262 }
263 code_ptr ++;
264 word_count ++;
265 } while (buf_ptr < buf_end);
266
267 buf = buf->next;
268 } while (buf);
269
270 if (label && label->size == word_count) {
271 label->addr = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset);
272 label->size = code_ptr - code;
273 label = label->next;
274 }
275
276 SLJIT_ASSERT(!label);
277 SLJIT_ASSERT(!jump);
278 SLJIT_ASSERT(!const_);
279 SLJIT_ASSERT(code_ptr - code <= (sljit_sw)compiler->size);
280
281 jump = compiler->jumps;
282 while (jump) {
283 do {
284 addr = (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target;
285 buf_ptr = (sljit_ins *)jump->addr;
286
287 if (jump->flags & PATCH_B) {
288 addr = (sljit_sw)(addr - (sljit_uw)SLJIT_ADD_EXEC_OFFSET(buf_ptr, executable_offset)) >> 2;
289 SLJIT_ASSERT((sljit_sw)addr <= 0x1ffffff && (sljit_sw)addr >= -0x2000000);
290 buf_ptr[0] = ((jump->flags & IS_BL) ? BL : B) | (addr & 0x3ffffff);
291 if (jump->flags & IS_COND)
292 buf_ptr[-1] -= (4 << 5);
293 break;
294 }
295 if (jump->flags & PATCH_COND) {
296 addr = (sljit_sw)(addr - (sljit_uw)SLJIT_ADD_EXEC_OFFSET(buf_ptr, executable_offset)) >> 2;
297 SLJIT_ASSERT((sljit_sw)addr <= 0x3ffff && (sljit_sw)addr >= -0x40000);
298 buf_ptr[0] = (buf_ptr[0] & ~0xffffe0) | ((addr & 0x7ffff) << 5);
299 break;
300 }
301
302 SLJIT_ASSERT((jump->flags & (PATCH_ABS48 | PATCH_ABS64)) || addr <= 0xffffffffl);
303 SLJIT_ASSERT((jump->flags & PATCH_ABS64) || addr <= 0xffffffffffffl);
304
305 dst = buf_ptr[0] & 0x1f;
306 buf_ptr[0] = MOVZ | dst | ((addr & 0xffff) << 5);
307 buf_ptr[1] = MOVK | dst | (((addr >> 16) & 0xffff) << 5) | (1 << 21);
308 if (jump->flags & (PATCH_ABS48 | PATCH_ABS64))
309 buf_ptr[2] = MOVK | dst | (((addr >> 32) & 0xffff) << 5) | (2 << 21);
310 if (jump->flags & PATCH_ABS64)
311 buf_ptr[3] = MOVK | dst | (((addr >> 48) & 0xffff) << 5) | (3 << 21);
312 } while (0);
313 jump = jump->next;
314 }
315
316 compiler->error = SLJIT_ERR_COMPILED;
317 compiler->executable_offset = executable_offset;
318 compiler->executable_size = (code_ptr - code) * sizeof(sljit_ins);
319
320 code = (sljit_ins *)SLJIT_ADD_EXEC_OFFSET(code, executable_offset);
321 code_ptr = (sljit_ins *)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset);
322
323 SLJIT_CACHE_FLUSH(code, code_ptr);
324 return code;
325 }
326
327 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_has_cpu_feature(sljit_s32 feature_type)
328 {
329 switch (feature_type) {
330 case SLJIT_HAS_FPU:
331 #ifdef SLJIT_IS_FPU_AVAILABLE
332 return SLJIT_IS_FPU_AVAILABLE;
333 #else
334 /* Available by default. */
335 return 1;
336 #endif
337
338 case SLJIT_HAS_PRE_UPDATE:
339 case SLJIT_HAS_CLZ:
340 case SLJIT_HAS_CMOV:
341 return 1;
342
343 default:
344 return 0;
345 }
346 }
347
348 /* --------------------------------------------------------------------- */
349 /* Core code generator functions. */
350 /* --------------------------------------------------------------------- */
351
352 #define COUNT_TRAILING_ZERO(value, result) \
353 result = 0; \
354 if (!(value & 0xffffffff)) { \
355 result += 32; \
356 value >>= 32; \
357 } \
358 if (!(value & 0xffff)) { \
359 result += 16; \
360 value >>= 16; \
361 } \
362 if (!(value & 0xff)) { \
363 result += 8; \
364 value >>= 8; \
365 } \
366 if (!(value & 0xf)) { \
367 result += 4; \
368 value >>= 4; \
369 } \
370 if (!(value & 0x3)) { \
371 result += 2; \
372 value >>= 2; \
373 } \
374 if (!(value & 0x1)) { \
375 result += 1; \
376 value >>= 1; \
377 }
378
379 #define LOGICAL_IMM_CHECK 0x100
380
381 static sljit_ins logical_imm(sljit_sw imm, sljit_s32 len)
382 {
383 sljit_s32 negated, ones, right;
384 sljit_uw mask, uimm;
385 sljit_ins ins;
386
387 if (len & LOGICAL_IMM_CHECK) {
388 len &= ~LOGICAL_IMM_CHECK;
389 if (len == 32 && (imm == 0 || imm == -1))
390 return 0;
391 if (len == 16 && ((sljit_s32)imm == 0 || (sljit_s32)imm == -1))
392 return 0;
393 }
394
395 SLJIT_ASSERT((len == 32 && imm != 0 && imm != -1)
396 || (len == 16 && (sljit_s32)imm != 0 && (sljit_s32)imm != -1));
397 uimm = (sljit_uw)imm;
398 while (1) {
399 if (len <= 0) {
400 SLJIT_UNREACHABLE();
401 return 0;
402 }
403 mask = ((sljit_uw)1 << len) - 1;
404 if ((uimm & mask) != ((uimm >> len) & mask))
405 break;
406 len >>= 1;
407 }
408
409 len <<= 1;
410
411 negated = 0;
412 if (uimm & 0x1) {
413 negated = 1;
414 uimm = ~uimm;
415 }
416
417 if (len < 64)
418 uimm &= ((sljit_uw)1 << len) - 1;
419
420 /* Unsigned right shift. */
421 COUNT_TRAILING_ZERO(uimm, right);
422
423 /* Signed shift. We also know that the highest bit is set. */
424 imm = (sljit_sw)~uimm;
425 SLJIT_ASSERT(imm < 0);
426
427 COUNT_TRAILING_ZERO(imm, ones);
428
429 if (~imm)
430 return 0;
431
432 if (len == 64)
433 ins = 1 << 22;
434 else
435 ins = (0x3f - ((len << 1) - 1)) << 10;
436
437 if (negated)
438 return ins | ((len - ones - 1) << 10) | ((len - ones - right) << 16);
439
440 return ins | ((ones - 1) << 10) | ((len - right) << 16);
441 }
442
443 #undef COUNT_TRAILING_ZERO
444
445 static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw simm)
446 {
447 sljit_uw imm = (sljit_uw)simm;
448 sljit_s32 i, zeros, ones, first;
449 sljit_ins bitmask;
450
451 if (imm <= 0xffff)
452 return push_inst(compiler, MOVZ | RD(dst) | (imm << 5));
453
454 if (simm >= -0x10000 && simm < 0)
455 return push_inst(compiler, MOVN | RD(dst) | ((~imm & 0xffff) << 5));
456
457 if (imm <= 0xffffffffl) {
458 if ((imm & 0xffff0000l) == 0xffff0000)
459 return push_inst(compiler, (MOVN ^ W_OP) | RD(dst) | ((~imm & 0xffff) << 5));
460 if ((imm & 0xffff) == 0xffff)
461 return push_inst(compiler, (MOVN ^ W_OP) | RD(dst) | ((~imm & 0xffff0000l) >> (16 - 5)) | (1 << 21));
462 bitmask = logical_imm(simm, 16);
463 if (bitmask != 0)
464 return push_inst(compiler, (ORRI ^ W_OP) | RD(dst) | RN(TMP_ZERO) | bitmask);
465 }
466 else {
467 bitmask = logical_imm(simm, 32);
468 if (bitmask != 0)
469 return push_inst(compiler, ORRI | RD(dst) | RN(TMP_ZERO) | bitmask);
470 }
471
472 if (imm <= 0xffffffffl) {
473 FAIL_IF(push_inst(compiler, MOVZ | RD(dst) | ((imm & 0xffff) << 5)));
474 return push_inst(compiler, MOVK | RD(dst) | ((imm & 0xffff0000l) >> (16 - 5)) | (1 << 21));
475 }
476
477 if (simm >= -0x100000000l && simm < 0) {
478 FAIL_IF(push_inst(compiler, MOVN | RD(dst) | ((~imm & 0xffff) << 5)));
479 return push_inst(compiler, MOVK | RD(dst) | ((imm & 0xffff0000l) >> (16 - 5)) | (1 << 21));
480 }
481
482 /* A large amount of number can be constructed from ORR and MOVx,
483 but computing them is costly. We don't */
484
485 zeros = 0;
486 ones = 0;
487 for (i = 4; i > 0; i--) {
488 if ((simm & 0xffff) == 0)
489 zeros++;
490 if ((simm & 0xffff) == 0xffff)
491 ones++;
492 simm >>= 16;
493 }
494
495 simm = (sljit_sw)imm;
496 first = 1;
497 if (ones > zeros) {
498 simm = ~simm;
499 for (i = 0; i < 4; i++) {
500 if (!(simm & 0xffff)) {
501 simm >>= 16;
502 continue;
503 }
504 if (first) {
505 first = 0;
506 FAIL_IF(push_inst(compiler, MOVN | RD(dst) | ((simm & 0xffff) << 5) | (i << 21)));
507 }
508 else
509 FAIL_IF(push_inst(compiler, MOVK | RD(dst) | ((~simm & 0xffff) << 5) | (i << 21)));
510 simm >>= 16;
511 }
512 return SLJIT_SUCCESS;
513 }
514
515 for (i = 0; i < 4; i++) {
516 if (!(simm & 0xffff)) {
517 simm >>= 16;
518 continue;
519 }
520 if (first) {
521 first = 0;
522 FAIL_IF(push_inst(compiler, MOVZ | RD(dst) | ((simm & 0xffff) << 5) | (i << 21)));
523 }
524 else
525 FAIL_IF(push_inst(compiler, MOVK | RD(dst) | ((simm & 0xffff) << 5) | (i << 21)));
526 simm >>= 16;
527 }
528 return SLJIT_SUCCESS;
529 }
530
531 #define ARG1_IMM 0x0010000
532 #define ARG2_IMM 0x0020000
533 #define INT_OP 0x0040000
534 #define SET_FLAGS 0x0080000
535 #define UNUSED_RETURN 0x0100000
536 #define SLOW_DEST 0x0200000
537 #define SLOW_SRC1 0x0400000
538 #define SLOW_SRC2 0x0800000
539
540 #define CHECK_FLAGS(flag_bits) \
541 if (flags & SET_FLAGS) { \
542 inv_bits |= flag_bits; \
543 if (flags & UNUSED_RETURN) \
544 dst = TMP_ZERO; \
545 }
546
547 static sljit_s32 emit_op_imm(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 dst, sljit_sw arg1, sljit_sw arg2)
548 {
549 /* dst must be register, TMP_REG1
550 arg1 must be register, TMP_REG1, imm
551 arg2 must be register, TMP_REG2, imm */
552 sljit_ins inv_bits = (flags & INT_OP) ? (1 << 31) : 0;
553 sljit_ins inst_bits;
554 sljit_s32 op = (flags & 0xffff);
555 sljit_s32 reg;
556 sljit_sw imm, nimm;
557
558 if (SLJIT_UNLIKELY((flags & (ARG1_IMM | ARG2_IMM)) == (ARG1_IMM | ARG2_IMM))) {
559 /* Both are immediates. */
560 flags &= ~ARG1_IMM;
561 if (arg1 == 0 && op != SLJIT_ADD && op != SLJIT_SUB)
562 arg1 = TMP_ZERO;
563 else {
564 FAIL_IF(load_immediate(compiler, TMP_REG1, arg1));
565 arg1 = TMP_REG1;
566 }
567 }
568
569 if (flags & (ARG1_IMM | ARG2_IMM)) {
570 reg = (flags & ARG2_IMM) ? arg1 : arg2;
571 imm = (flags & ARG2_IMM) ? arg2 : arg1;
572
573 switch (op) {
574 case SLJIT_MUL:
575 case SLJIT_NEG:
576 case SLJIT_CLZ:
577 case SLJIT_ADDC:
578 case SLJIT_SUBC:
579 /* No form with immediate operand (except imm 0, which
580 is represented by a ZERO register). */
581 break;
582 case SLJIT_MOV:
583 SLJIT_ASSERT(!(flags & SET_FLAGS) && (flags & ARG2_IMM) && arg1 == TMP_REG1);
584 return load_immediate(compiler, dst, imm);
585 case SLJIT_NOT:
586 SLJIT_ASSERT(flags & ARG2_IMM);
587 FAIL_IF(load_immediate(compiler, dst, (flags & INT_OP) ? (~imm & 0xffffffff) : ~imm));
588 goto set_flags;
589 case SLJIT_SUB:
590 if (flags & ARG1_IMM)
591 break;
592 imm = -imm;
593 /* Fall through. */
594 case SLJIT_ADD:
595 if (imm == 0) {
596 CHECK_FLAGS(1 << 29);
597 return push_inst(compiler, ((op == SLJIT_ADD ? ADDI : SUBI) ^ inv_bits) | RD(dst) | RN(reg));
598 }
599 if (imm > 0 && imm <= 0xfff) {
600 CHECK_FLAGS(1 << 29);
601 return push_inst(compiler, (ADDI ^ inv_bits) | RD(dst) | RN(reg) | (imm << 10));
602 }
603 nimm = -imm;
604 if (nimm > 0 && nimm <= 0xfff) {
605 CHECK_FLAGS(1 << 29);
606 return push_inst(compiler, (SUBI ^ inv_bits) | RD(dst) | RN(reg) | (nimm << 10));
607 }
608 if (imm > 0 && imm <= 0xffffff && !(imm & 0xfff)) {
609 CHECK_FLAGS(1 << 29);
610 return push_inst(compiler, (ADDI ^ inv_bits) | RD(dst) | RN(reg) | ((imm >> 12) << 10) | (1 << 22));
611 }
612 if (nimm > 0 && nimm <= 0xffffff && !(nimm & 0xfff)) {
613 CHECK_FLAGS(1 << 29);
614 return push_inst(compiler, (SUBI ^ inv_bits) | RD(dst) | RN(reg) | ((nimm >> 12) << 10) | (1 << 22));
615 }
616 if (imm > 0 && imm <= 0xffffff && !(flags & SET_FLAGS)) {
617 FAIL_IF(push_inst(compiler, (ADDI ^ inv_bits) | RD(dst) | RN(reg) | ((imm >> 12) << 10) | (1 << 22)));
618 return push_inst(compiler, (ADDI ^ inv_bits) | RD(dst) | RN(dst) | ((imm & 0xfff) << 10));
619 }
620 if (nimm > 0 && nimm <= 0xffffff && !(flags & SET_FLAGS)) {
621 FAIL_IF(push_inst(compiler, (SUBI ^ inv_bits) | RD(dst) | RN(reg) | ((nimm >> 12) << 10) | (1 << 22)));
622 return push_inst(compiler, (SUBI ^ inv_bits) | RD(dst) | RN(dst) | ((nimm & 0xfff) << 10));
623 }
624 break;
625 case SLJIT_AND:
626 inst_bits = logical_imm(imm, LOGICAL_IMM_CHECK | ((flags & INT_OP) ? 16 : 32));
627 if (!inst_bits)
628 break;
629 CHECK_FLAGS(3 << 29);
630 return push_inst(compiler, (ANDI ^ inv_bits) | RD(dst) | RN(reg) | inst_bits);
631 case SLJIT_OR:
632 case SLJIT_XOR:
633 inst_bits = logical_imm(imm, LOGICAL_IMM_CHECK | ((flags & INT_OP) ? 16 : 32));
634 if (!inst_bits)
635 break;
636 if (op == SLJIT_OR)
637 inst_bits |= ORRI;
638 else
639 inst_bits |= EORI;
640 FAIL_IF(push_inst(compiler, (inst_bits ^ inv_bits) | RD(dst) | RN(reg)));
641 goto set_flags;
642 case SLJIT_SHL:
643 if (flags & ARG1_IMM)
644 break;
645 if (flags & INT_OP) {
646 imm &= 0x1f;
647 FAIL_IF(push_inst(compiler, (UBFM ^ inv_bits) | RD(dst) | RN(arg1) | ((-imm & 0x1f) << 16) | ((31 - imm) << 10)));
648 }
649 else {
650 imm &= 0x3f;
651 FAIL_IF(push_inst(compiler, (UBFM ^ inv_bits) | RD(dst) | RN(arg1) | (1 << 22) | ((-imm & 0x3f) << 16) | ((63 - imm) << 10)));
652 }
653 goto set_flags;
654 case SLJIT_LSHR:
655 case SLJIT_ASHR:
656 if (flags & ARG1_IMM)
657 break;
658 if (op == SLJIT_ASHR)
659 inv_bits |= 1 << 30;
660 if (flags & INT_OP) {
661 imm &= 0x1f;
662 FAIL_IF(push_inst(compiler, (UBFM ^ inv_bits) | RD(dst) | RN(arg1) | (imm << 16) | (31 << 10)));
663 }
664 else {
665 imm &= 0x3f;
666 FAIL_IF(push_inst(compiler, (UBFM ^ inv_bits) | RD(dst) | RN(arg1) | (1 << 22) | (imm << 16) | (63 << 10)));
667 }
668 goto set_flags;
669 default:
670 SLJIT_UNREACHABLE();
671 break;
672 }
673
674 if (flags & ARG2_IMM) {
675 if (arg2 == 0)
676 arg2 = TMP_ZERO;
677 else {
678 FAIL_IF(load_immediate(compiler, TMP_REG2, arg2));
679 arg2 = TMP_REG2;
680 }
681 }
682 else {
683 if (arg1 == 0)
684 arg1 = TMP_ZERO;
685 else {
686 FAIL_IF(load_immediate(compiler, TMP_REG1, arg1));
687 arg1 = TMP_REG1;
688 }
689 }
690 }
691
692 /* Both arguments are registers. */
693 switch (op) {
694 case SLJIT_MOV:
695 case SLJIT_MOV_P:
696 case SLJIT_MOVU:
697 case SLJIT_MOVU_P:
698 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
699 if (dst == arg2)
700 return SLJIT_SUCCESS;
701 return push_inst(compiler, ORR | RD(dst) | RN(TMP_ZERO) | RM(arg2));
702 case SLJIT_MOV_U8:
703 case SLJIT_MOVU_U8:
704 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
705 return push_inst(compiler, (UBFM ^ (1 << 31)) | RD(dst) | RN(arg2) | (7 << 10));
706 case SLJIT_MOV_S8:
707 case SLJIT_MOVU_S8:
708 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
709 if (!(flags & INT_OP))
710 inv_bits |= 1 << 22;
711 return push_inst(compiler, (SBFM ^ inv_bits) | RD(dst) | RN(arg2) | (7 << 10));
712 case SLJIT_MOV_U16:
713 case SLJIT_MOVU_U16:
714 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
715 return push_inst(compiler, (UBFM ^ (1 << 31)) | RD(dst) | RN(arg2) | (15 << 10));
716 case SLJIT_MOV_S16:
717 case SLJIT_MOVU_S16:
718 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
719 if (!(flags & INT_OP))
720 inv_bits |= 1 << 22;
721 return push_inst(compiler, (SBFM ^ inv_bits) | RD(dst) | RN(arg2) | (15 << 10));
722 case SLJIT_MOV_U32:
723 case SLJIT_MOVU_U32:
724 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
725 if ((flags & INT_OP) && dst == arg2)
726 return SLJIT_SUCCESS;
727 return push_inst(compiler, (ORR ^ (1 << 31)) | RD(dst) | RN(TMP_ZERO) | RM(arg2));
728 case SLJIT_MOV_S32:
729 case SLJIT_MOVU_S32:
730 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
731 if ((flags & INT_OP) && dst == arg2)
732 return SLJIT_SUCCESS;
733 return push_inst(compiler, SBFM | (1 << 22) | RD(dst) | RN(arg2) | (31 << 10));
734 case SLJIT_NOT:
735 SLJIT_ASSERT(arg1 == TMP_REG1);
736 FAIL_IF(push_inst(compiler, (ORN ^ inv_bits) | RD(dst) | RN(TMP_ZERO) | RM(arg2)));
737 break; /* Set flags. */
738 case SLJIT_NEG:
739 SLJIT_ASSERT(arg1 == TMP_REG1);
740 if (flags & SET_FLAGS)
741 inv_bits |= 1 << 29;
742 return push_inst(compiler, (SUB ^ inv_bits) | RD(dst) | RN(TMP_ZERO) | RM(arg2));
743 case SLJIT_CLZ:
744 SLJIT_ASSERT(arg1 == TMP_REG1);
745 return push_inst(compiler, (CLZ ^ inv_bits) | RD(dst) | RN(arg2));
746 case SLJIT_ADD:
747 CHECK_FLAGS(1 << 29);
748 return push_inst(compiler, (ADD ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2));
749 case SLJIT_ADDC:
750 CHECK_FLAGS(1 << 29);
751 return push_inst(compiler, (ADC ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2));
752 case SLJIT_SUB:
753 CHECK_FLAGS(1 << 29);
754 return push_inst(compiler, (SUB ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2));
755 case SLJIT_SUBC:
756 CHECK_FLAGS(1 << 29);
757 return push_inst(compiler, (SBC ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2));
758 case SLJIT_MUL:
759 if (!(flags & SET_FLAGS))
760 return push_inst(compiler, (MADD ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2) | RT2(TMP_ZERO));
761 if (flags & INT_OP) {
762 FAIL_IF(push_inst(compiler, SMADDL | RD(dst) | RN(arg1) | RM(arg2) | (31 << 10)));
763 FAIL_IF(push_inst(compiler, ADD | RD(TMP_LR) | RN(TMP_ZERO) | RM(dst) | (2 << 22) | (31 << 10)));
764 return push_inst(compiler, SUBS | RD(TMP_ZERO) | RN(TMP_LR) | RM(dst) | (2 << 22) | (63 << 10));
765 }
766 FAIL_IF(push_inst(compiler, SMULH | RD(TMP_LR) | RN(arg1) | RM(arg2)));
767 FAIL_IF(push_inst(compiler, MADD | RD(dst) | RN(arg1) | RM(arg2) | RT2(TMP_ZERO)));
768 return push_inst(compiler, SUBS | RD(TMP_ZERO) | RN(TMP_LR) | RM(dst) | (2 << 22) | (63 << 10));
769 case SLJIT_AND:
770 CHECK_FLAGS(3 << 29);
771 return push_inst(compiler, (AND ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2));
772 case SLJIT_OR:
773 FAIL_IF(push_inst(compiler, (ORR ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2)));
774 break; /* Set flags. */
775 case SLJIT_XOR:
776 FAIL_IF(push_inst(compiler, (EOR ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2)));
777 break; /* Set flags. */
778 case SLJIT_SHL:
779 FAIL_IF(push_inst(compiler, (LSLV ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2)));
780 break; /* Set flags. */
781 case SLJIT_LSHR:
782 FAIL_IF(push_inst(compiler, (LSRV ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2)));
783 break; /* Set flags. */
784 case SLJIT_ASHR:
785 FAIL_IF(push_inst(compiler, (ASRV ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2)));
786 break; /* Set flags. */
787 default:
788 SLJIT_UNREACHABLE();
789 return SLJIT_SUCCESS;
790 }
791
792 set_flags:
793 if (flags & SET_FLAGS)
794 return push_inst(compiler, (SUBS ^ inv_bits) | RD(TMP_ZERO) | RN(dst) | RM(TMP_ZERO));
795 return SLJIT_SUCCESS;
796 }
797
798 #define STORE 0x01
799 #define SIGNED 0x02
800
801 #define UPDATE 0x04
802 #define ARG_TEST 0x08
803
804 #define BYTE_SIZE 0x000
805 #define HALF_SIZE 0x100
806 #define INT_SIZE 0x200
807 #define WORD_SIZE 0x300
808
809 #define MEM_SIZE_SHIFT(flags) ((flags) >> 8)
810
811 static const sljit_ins sljit_mem_imm[4] = {
812 /* u l */ 0x39400000 /* ldrb [reg,imm] */,
813 /* u s */ 0x39000000 /* strb [reg,imm] */,
814 /* s l */ 0x39800000 /* ldrsb [reg,imm] */,
815 /* s s */ 0x39000000 /* strb [reg,imm] */,
816 };
817
818 static const sljit_ins sljit_mem_simm[4] = {
819 /* u l */ 0x38400000 /* ldurb [reg,imm] */,
820 /* u s */ 0x38000000 /* sturb [reg,imm] */,
821 /* s l */ 0x38800000 /* ldursb [reg,imm] */,
822 /* s s */ 0x38000000 /* sturb [reg,imm] */,
823 };
824
825 static const sljit_ins sljit_mem_pre_simm[4] = {
826 /* u l */ 0x38400c00 /* ldrb [reg,imm]! */,
827 /* u s */ 0x38000c00 /* strb [reg,imm]! */,
828 /* s l */ 0x38800c00 /* ldrsb [reg,imm]! */,
829 /* s s */ 0x38000c00 /* strb [reg,imm]! */,
830 };
831
832 static const sljit_ins sljit_mem_reg[4] = {
833 /* u l */ 0x38606800 /* ldrb [reg,reg] */,
834 /* u s */ 0x38206800 /* strb [reg,reg] */,
835 /* s l */ 0x38a06800 /* ldrsb [reg,reg] */,
836 /* s s */ 0x38206800 /* strb [reg,reg] */,
837 };
838
839 /* Helper function. Dst should be reg + value, using at most 1 instruction, flags does not set. */
840 static sljit_s32 emit_set_delta(struct sljit_compiler *compiler, sljit_s32 dst, sljit_s32 reg, sljit_sw value)
841 {
842 if (value >= 0) {
843 if (value <= 0xfff)
844 return push_inst(compiler, ADDI | RD(dst) | RN(reg) | (value << 10));
845 if (value <= 0xffffff && !(value & 0xfff))
846 return push_inst(compiler, ADDI | (1 << 22) | RD(dst) | RN(reg) | (value >> 2));
847 }
848 else {
849 value = -value;
850 if (value <= 0xfff)
851 return push_inst(compiler, SUBI | RD(dst) | RN(reg) | (value << 10));
852 if (value <= 0xffffff && !(value & 0xfff))
853 return push_inst(compiler, SUBI | (1 << 22) | RD(dst) | RN(reg) | (value >> 2));
854 }
855 return SLJIT_ERR_UNSUPPORTED;
856 }
857
858 /* Can perform an operation using at most 1 instruction. */
859 static sljit_s32 getput_arg_fast(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, sljit_s32 arg, sljit_sw argw)
860 {
861 sljit_u32 shift = MEM_SIZE_SHIFT(flags);
862
863 SLJIT_ASSERT(arg & SLJIT_MEM);
864
865 if (SLJIT_UNLIKELY(flags & UPDATE)) {
866 if ((arg & REG_MASK) && !(arg & OFFS_REG_MASK) && argw <= 255 && argw >= -256) {
867 if (SLJIT_UNLIKELY(flags & ARG_TEST))
868 return 1;
869
870 arg &= REG_MASK;
871 argw &= 0x1ff;
872 FAIL_IF(push_inst(compiler, sljit_mem_pre_simm[flags & 0x3]
873 | (shift << 30) | RT(reg) | RN(arg) | (argw << 12)));
874 return -1;
875 }
876 return 0;
877 }
878
879 if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) {
880 argw &= 0x3;
881 if (argw && argw != shift)
882 return 0;
883
884 if (SLJIT_UNLIKELY(flags & ARG_TEST))
885 return 1;
886
887 FAIL_IF(push_inst(compiler, sljit_mem_reg[flags & 0x3] | (shift << 30) | RT(reg)
888 | RN(arg & REG_MASK) | RM(OFFS_REG(arg)) | (argw ? (1 << 12) : 0)));
889 return -1;
890 }
891
892 arg &= REG_MASK;
893
894 if (arg == SLJIT_UNUSED)
895 return 0;
896
897 if (argw >= 0 && (argw >> shift) <= 0xfff && (argw & ((1 << shift) - 1)) == 0) {
898 if (SLJIT_UNLIKELY(flags & ARG_TEST))
899 return 1;
900
901 FAIL_IF(push_inst(compiler, sljit_mem_imm[flags & 0x3] | (shift << 30)
902 | RT(reg) | RN(arg) | (argw << (10 - shift))));
903 return -1;
904 }
905
906 if (argw > 255 || argw < -256)
907 return 0;
908
909 if (SLJIT_UNLIKELY(flags & ARG_TEST))
910 return 1;
911
912 FAIL_IF(push_inst(compiler, sljit_mem_simm[flags & 0x3] | (shift << 30)
913 | RT(reg) | RN(arg) | ((argw & 0x1ff) << 12)));
914 return -1;
915 }
916
917 /* see getput_arg below.
918 Note: can_cache is called only for binary operators. Those
919 operators always uses word arguments without write back. */
920 static sljit_s32 can_cache(sljit_s32 arg, sljit_sw argw, sljit_s32 next_arg, sljit_sw next_argw)
921 {
922 sljit_sw diff;
923 if ((arg & OFFS_REG_MASK) || !(next_arg & SLJIT_MEM))
924 return 0;
925
926 if (!(arg & REG_MASK)) {
927 diff = argw - next_argw;
928 if (diff <= 0xfff && diff >= -0xfff)
929 return 1;
930 return 0;
931 }
932
933 if (argw == next_argw)
934 return 1;
935
936 diff = argw - next_argw;
937 if (arg == next_arg && diff <= 0xfff && diff >= -0xfff)
938 return 1;
939
940 return 0;
941 }
942
943 /* Emit the necessary instructions. See can_cache above. */
944 static sljit_s32 getput_arg(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg,
945 sljit_s32 arg, sljit_sw argw, sljit_s32 next_arg, sljit_sw next_argw)
946 {
947 sljit_u32 shift = MEM_SIZE_SHIFT(flags);
948 sljit_s32 tmp_r, other_r;
949 sljit_sw diff;
950
951 SLJIT_ASSERT(arg & SLJIT_MEM);
952 if (!(next_arg & SLJIT_MEM)) {
953 next_arg = 0;
954 next_argw = 0;
955 }
956
957 tmp_r = ((flags & STORE) || (flags == (WORD_SIZE | SIGNED))) ? TMP_REG3 : reg;
958
959 if (SLJIT_UNLIKELY((flags & UPDATE) && (arg & REG_MASK))) {
960 /* Update only applies if a base register exists. */
961 other_r = OFFS_REG(arg);
962 if (!other_r) {
963 other_r = arg & REG_MASK;
964 SLJIT_ASSERT(other_r != reg);
965
966 if (argw >= 0 && argw <= 0xffffff) {
967 if ((argw & 0xfff) != 0)
968 FAIL_IF(push_inst(compiler, ADDI | RD(other_r) | RN(other_r) | ((argw & 0xfff) << 10)));
969 if (argw >> 12)
970 FAIL_IF(push_inst(compiler, ADDI | (1 << 22) | RD(other_r) | RN(other_r) | ((argw >> 12) << 10)));
971 return push_inst(compiler, sljit_mem_imm[flags & 0x3] | (shift << 30) | RT(reg) | RN(other_r));
972 }
973 else if (argw < 0 && argw >= -0xffffff) {
974 argw = -argw;
975 if ((argw & 0xfff) != 0)
976 FAIL_IF(push_inst(compiler, SUBI | RD(other_r) | RN(other_r) | ((argw & 0xfff) << 10)));
977 if (argw >> 12)
978 FAIL_IF(push_inst(compiler, SUBI | (1 << 22) | RD(other_r) | RN(other_r) | ((argw >> 12) << 10)));
979 return push_inst(compiler, sljit_mem_imm[flags & 0x3] | (shift << 30) | RT(reg) | RN(other_r));
980 }
981
982 if (compiler->cache_arg == SLJIT_MEM) {
983 if (argw == compiler->cache_argw) {
984 other_r = TMP_REG3;
985 argw = 0;
986 }
987 else if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, argw - compiler->cache_argw) != SLJIT_ERR_UNSUPPORTED) {
988 FAIL_IF(compiler->error);
989 compiler->cache_argw = argw;
990 other_r = TMP_REG3;
991 argw = 0;
992 }
993 }
994
995 if (argw) {
996 FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
997 compiler->cache_arg = SLJIT_MEM;
998 compiler->cache_argw = argw;
999 other_r = TMP_REG3;
1000 argw = 0;
1001 }
1002 }
1003
1004 /* No caching here. */
1005 arg &= REG_MASK;
1006 FAIL_IF(push_inst(compiler, sljit_mem_reg[flags & 0x3] | (shift << 30) | RT(reg) | RN(arg) | RM(other_r)));
1007 return push_inst(compiler, ADD | RD(arg) | RN(arg) | RM(other_r));
1008 }
1009
1010 if (arg & OFFS_REG_MASK) {
1011 other_r = OFFS_REG(arg);
1012 arg &= REG_MASK;
1013 FAIL_IF(push_inst(compiler, ADD | RD(tmp_r) | RN(arg) | RM(other_r) | ((argw & 0x3) << 10)));
1014 return push_inst(compiler, sljit_mem_imm[flags & 0x3] | (shift << 30) | RT(reg) | RN(tmp_r));
1015 }
1016
1017 if (compiler->cache_arg == arg) {
1018 diff = argw - compiler->cache_argw;
1019 if (diff <= 255 && diff >= -256)
1020 return push_inst(compiler, sljit_mem_simm[flags & 0x3] | (shift << 30)
1021 | RT(reg) | RN(TMP_REG3) | ((diff & 0x1ff) << 12));
1022 if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, diff) != SLJIT_ERR_UNSUPPORTED) {
1023 FAIL_IF(compiler->error);
1024 return push_inst(compiler, sljit_mem_imm[flags & 0x3] | (shift << 30) | RT(reg) | RN(arg));
1025 }
1026 }
1027
1028 diff = argw - next_argw;
1029 next_arg = (arg & REG_MASK) && (arg == next_arg) && diff <= 0xfff && diff >= -0xfff && diff != 0;
1030 arg &= REG_MASK;
1031
1032 if (arg != SLJIT_UNUSED && argw >= 0 && argw <= 0xffffff && (argw & ((1 << shift) - 1)) == 0) {
1033 FAIL_IF(push_inst(compiler, ADDI | (1 << 22) | RD(tmp_r) | RN(arg) | ((argw >> 12) << 10)));
1034 return push_inst(compiler, sljit_mem_imm[flags & 0x3] | (shift << 30)
1035 | RT(reg) | RN(tmp_r) | ((argw & 0xfff) << (10 - shift)));
1036 }
1037
1038 if (arg && compiler->cache_arg == SLJIT_MEM) {
1039 if (compiler->cache_argw == argw)
1040 return push_inst(compiler, sljit_mem_reg[flags & 0x3] | (shift << 30) | RT(reg) | RN(arg) | RM(TMP_REG3));
1041 if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, argw - compiler->cache_argw) != SLJIT_ERR_UNSUPPORTED) {
1042 FAIL_IF(compiler->error);
1043 compiler->cache_argw = argw;
1044 return push_inst(compiler, sljit_mem_reg[flags & 0x3] | (shift << 30) | RT(reg) | RN(arg) | RM(TMP_REG3));
1045 }
1046 }
1047
1048 compiler->cache_argw = argw;
1049 if (next_arg && emit_set_delta(compiler, TMP_REG3, arg, argw) != SLJIT_ERR_UNSUPPORTED) {
1050 FAIL_IF(compiler->error);
1051 compiler->cache_arg = SLJIT_MEM | arg;
1052 arg = 0;
1053 }
1054 else {
1055 FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1056 compiler->cache_arg = SLJIT_MEM;
1057
1058 if (next_arg) {
1059 FAIL_IF(push_inst(compiler, ADD | RD(TMP_REG3) | RN(TMP_REG3) | RM(arg)));
1060 compiler->cache_arg = SLJIT_MEM | arg;
1061 arg = 0;
1062 }
1063 }
1064
1065 if (arg)
1066 return push_inst(compiler, sljit_mem_reg[flags & 0x3] | (shift << 30) | RT(reg) | RN(arg) | RM(TMP_REG3));
1067 return push_inst(compiler, sljit_mem_imm[flags & 0x3] | (shift << 30) | RT(reg) | RN(TMP_REG3));
1068 }
1069
1070 static SLJIT_INLINE sljit_s32 emit_op_mem(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, sljit_s32 arg, sljit_sw argw)
1071 {
1072 if (getput_arg_fast(compiler, flags, reg, arg, argw))
1073 return compiler->error;
1074 compiler->cache_arg = 0;
1075 compiler->cache_argw = 0;
1076 return getput_arg(compiler, flags, reg, arg, argw, 0, 0);
1077 }
1078
1079 static SLJIT_INLINE sljit_s32 emit_op_mem2(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, sljit_s32 arg1, sljit_sw arg1w, sljit_s32 arg2, sljit_sw arg2w)
1080 {
1081 if (getput_arg_fast(compiler, flags, reg, arg1, arg1w))
1082 return compiler->error;
1083 return getput_arg(compiler, flags, reg, arg1, arg1w, arg2, arg2w);
1084 }
1085
1086 /* --------------------------------------------------------------------- */
1087 /* Entry, exit */
1088 /* --------------------------------------------------------------------- */
1089
1090 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compiler,
1091 sljit_s32 options, sljit_s32 args, sljit_s32 scratches, sljit_s32 saveds,
1092 sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size)
1093 {
1094 sljit_s32 i, tmp, offs, prev, saved_regs_size;
1095
1096 CHECK_ERROR();
1097 CHECK(check_sljit_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size));
1098 set_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size);
1099
1100 saved_regs_size = GET_SAVED_REGISTERS_SIZE(scratches, saveds, 0);
1101 local_size += saved_regs_size + SLJIT_LOCALS_OFFSET;
1102 local_size = (local_size + 15) & ~0xf;
1103 compiler->local_size = local_size;
1104
1105 if (local_size <= (63 * sizeof(sljit_sw))) {
1106 FAIL_IF(push_inst(compiler, STP_PRE | 29 | RT2(TMP_LR)
1107 | RN(TMP_SP) | ((-(local_size >> 3) & 0x7f) << 15)));
1108 FAIL_IF(push_inst(compiler, ADDI | RD(SLJIT_SP) | RN(TMP_SP) | (0 << 10)));
1109 offs = (local_size - saved_regs_size) << (15 - 3);
1110 } else {
1111 offs = 0 << 15;
1112 if (saved_regs_size & 0x8) {
1113 offs = 1 << 15;
1114 saved_regs_size += sizeof(sljit_sw);
1115 }
1116 local_size -= saved_regs_size + SLJIT_LOCALS_OFFSET;
1117 if (saved_regs_size > 0)
1118 FAIL_IF(push_inst(compiler, SUBI | RD(TMP_SP) | RN(TMP_SP) | (saved_regs_size << 10)));
1119 }
1120
1121 tmp = saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - saveds) : SLJIT_FIRST_SAVED_REG;
1122 prev = -1;
1123 for (i = SLJIT_S0; i >= tmp; i--) {
1124 if (prev == -1) {
1125 if (!(offs & (1 << 15))) {
1126 prev = i;
1127 continue;
1128 }
1129 FAIL_IF(push_inst(compiler, STRI | RT(i) | RN(TMP_SP) | (offs >> 5)));
1130 offs += 1 << 15;
1131 continue;
1132 }
1133 FAIL_IF(push_inst(compiler, STP | RT(prev) | RT2(i) | RN(TMP_SP) | offs));
1134 offs += 2 << 15;
1135 prev = -1;
1136 }
1137
1138 for (i = scratches; i >= SLJIT_FIRST_SAVED_REG; i--) {
1139 if (prev == -1) {
1140 if (!(offs & (1 << 15))) {
1141 prev = i;
1142 continue;
1143 }
1144 FAIL_IF(push_inst(compiler, STRI | RT(i) | RN(TMP_SP) | (offs >> 5)));
1145 offs += 1 << 15;
1146 continue;
1147 }
1148 FAIL_IF(push_inst(compiler, STP | RT(prev) | RT2(i) | RN(TMP_SP) | offs));
1149 offs += 2 << 15;
1150 prev = -1;
1151 }
1152
1153 SLJIT_ASSERT(prev == -1);
1154
1155 if (compiler->local_size > (63 * sizeof(sljit_sw))) {
1156 /* The local_size is already adjusted by the saved registers. */
1157 if (local_size > 0xfff) {
1158 FAIL_IF(push_inst(compiler, SUBI | RD(TMP_SP) | RN(TMP_SP) | ((local_size >> 12) << 10) | (1 << 22)));
1159 local_size &= 0xfff;
1160 }
1161 if (local_size)
1162 FAIL_IF(push_inst(compiler, SUBI | RD(TMP_SP) | RN(TMP_SP) | (local_size << 10)));
1163 FAIL_IF(push_inst(compiler, STP_PRE | 29 | RT2(TMP_LR)
1164 | RN(TMP_SP) | ((-(16 >> 3) & 0x7f) << 15)));
1165 FAIL_IF(push_inst(compiler, ADDI | RD(SLJIT_SP) | RN(TMP_SP) | (0 << 10)));
1166 }
1167
1168 if (args >= 1)
1169 FAIL_IF(push_inst(compiler, ORR | RD(SLJIT_S0) | RN(TMP_ZERO) | RM(SLJIT_R0)));
1170 if (args >= 2)
1171 FAIL_IF(push_inst(compiler, ORR | RD(SLJIT_S1) | RN(TMP_ZERO) | RM(SLJIT_R1)));
1172 if (args >= 3)
1173 FAIL_IF(push_inst(compiler, ORR | RD(SLJIT_S2) | RN(TMP_ZERO) | RM(SLJIT_R2)));
1174
1175 return SLJIT_SUCCESS;
1176 }
1177
1178 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_set_context(struct sljit_compiler *compiler,
1179 sljit_s32 options, sljit_s32 args, sljit_s32 scratches, sljit_s32 saveds,
1180 sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size)
1181 {
1182 CHECK_ERROR();
1183 CHECK(check_sljit_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size));
1184 set_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size);
1185
1186 local_size += GET_SAVED_REGISTERS_SIZE(scratches, saveds, 0) + SLJIT_LOCALS_OFFSET;
1187 local_size = (local_size + 15) & ~0xf;
1188 compiler->local_size = local_size;
1189 return SLJIT_SUCCESS;
1190 }
1191
1192 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 src, sljit_sw srcw)
1193 {
1194 sljit_s32 local_size;
1195 sljit_s32 i, tmp, offs, prev, saved_regs_size;
1196
1197 CHECK_ERROR();
1198 CHECK(check_sljit_emit_return(compiler, op, src, srcw));
1199
1200 FAIL_IF(emit_mov_before_return(compiler, op, src, srcw));
1201
1202 local_size = compiler->local_size;
1203
1204 saved_regs_size = GET_SAVED_REGISTERS_SIZE(compiler->scratches, compiler->saveds, 0);
1205 if (local_size <= (63 * sizeof(sljit_sw)))
1206 offs = (local_size - saved_regs_size) << (15 - 3);
1207 else {
1208 FAIL_IF(push_inst(compiler, LDP_PST | 29 | RT2(TMP_LR)
1209 | RN(TMP_SP) | (((16 >> 3) & 0x7f) << 15)));
1210 offs = 0 << 15;
1211 if (saved_regs_size & 0x8) {
1212 offs = 1 << 15;
1213 saved_regs_size += sizeof(sljit_sw);
1214 }
1215 local_size -= saved_regs_size + SLJIT_LOCALS_OFFSET;
1216 if (local_size > 0xfff) {
1217 FAIL_IF(push_inst(compiler, ADDI | RD(TMP_SP) | RN(TMP_SP) | ((local_size >> 12) << 10) | (1 << 22)));
1218 local_size &= 0xfff;
1219 }
1220 if (local_size)
1221 FAIL_IF(push_inst(compiler, ADDI | RD(TMP_SP) | RN(TMP_SP) | (local_size << 10)));
1222 }
1223
1224 tmp = compiler->saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - compiler->saveds) : SLJIT_FIRST_SAVED_REG;
1225 prev = -1;
1226 for (i = SLJIT_S0; i >= tmp; i--) {
1227 if (prev == -1) {
1228 if (!(offs & (1 << 15))) {
1229 prev = i;
1230 continue;
1231 }
1232 FAIL_IF(push_inst(compiler, LDRI | RT(i) | RN(TMP_SP) | (offs >> 5)));
1233 offs += 1 << 15;
1234 continue;
1235 }
1236 FAIL_IF(push_inst(compiler, LDP | RT(prev) | RT2(i) | RN(TMP_SP) | offs));
1237 offs += 2 << 15;
1238 prev = -1;
1239 }
1240
1241 for (i = compiler->scratches; i >= SLJIT_FIRST_SAVED_REG; i--) {
1242 if (prev == -1) {
1243 if (!(offs & (1 << 15))) {
1244 prev = i;
1245 continue;
1246 }
1247 FAIL_IF(push_inst(compiler, LDRI | RT(i) | RN(TMP_SP) | (offs >> 5)));
1248 offs += 1 << 15;
1249 continue;
1250 }
1251 FAIL_IF(push_inst(compiler, LDP | RT(prev) | RT2(i) | RN(TMP_SP) | offs));
1252 offs += 2 << 15;
1253 prev = -1;
1254 }
1255
1256 SLJIT_ASSERT(prev == -1);
1257
1258 if (compiler->local_size <= (63 * sizeof(sljit_sw))) {
1259 FAIL_IF(push_inst(compiler, LDP_PST | 29 | RT2(TMP_LR)
1260 | RN(TMP_SP) | (((local_size >> 3) & 0x7f) << 15)));
1261 } else if (saved_regs_size > 0) {
1262 FAIL_IF(push_inst(compiler, ADDI | RD(TMP_SP) | RN(TMP_SP) | (saved_regs_size << 10)));
1263 }
1264
1265 FAIL_IF(push_inst(compiler, RET | RN(TMP_LR)));
1266 return SLJIT_SUCCESS;
1267 }
1268
1269 /* --------------------------------------------------------------------- */
1270 /* Operators */
1271 /* --------------------------------------------------------------------- */
1272
1273 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op0(struct sljit_compiler *compiler, sljit_s32 op)
1274 {
1275 sljit_ins inv_bits = (op & SLJIT_I32_OP) ? (1 << 31) : 0;
1276
1277 CHECK_ERROR();
1278 CHECK(check_sljit_emit_op0(compiler, op));
1279
1280 op = GET_OPCODE(op);
1281 switch (op) {
1282 case SLJIT_BREAKPOINT:
1283 return push_inst(compiler, BRK);
1284 case SLJIT_NOP:
1285 return push_inst(compiler, NOP);
1286 case SLJIT_LMUL_UW:
1287 case SLJIT_LMUL_SW:
1288 FAIL_IF(push_inst(compiler, ORR | RD(TMP_REG1) | RN(TMP_ZERO) | RM(SLJIT_R0)));
1289 FAIL_IF(push_inst(compiler, MADD | RD(SLJIT_R0) | RN(SLJIT_R0) | RM(SLJIT_R1) | RT2(TMP_ZERO)));
1290 return push_inst(compiler, (op == SLJIT_LMUL_UW ? UMULH : SMULH) | RD(SLJIT_R1) | RN(TMP_REG1) | RM(SLJIT_R1));
1291 case SLJIT_DIVMOD_UW:
1292 case SLJIT_DIVMOD_SW:
1293 FAIL_IF(push_inst(compiler, (ORR ^ inv_bits) | RD(TMP_REG1) | RN(TMP_ZERO) | RM(SLJIT_R0)));
1294 FAIL_IF(push_inst(compiler, ((op == SLJIT_DIVMOD_UW ? UDIV : SDIV) ^ inv_bits) | RD(SLJIT_R0) | RN(SLJIT_R0) | RM(SLJIT_R1)));
1295 FAIL_IF(push_inst(compiler, (MADD ^ inv_bits) | RD(SLJIT_R1) | RN(SLJIT_R0) | RM(SLJIT_R1) | RT2(TMP_ZERO)));
1296 return push_inst(compiler, (SUB ^ inv_bits) | RD(SLJIT_R1) | RN(TMP_REG1) | RM(SLJIT_R1));
1297 case SLJIT_DIV_UW:
1298 case SLJIT_DIV_SW:
1299 return push_inst(compiler, ((op == SLJIT_DIV_UW ? UDIV : SDIV) ^ inv_bits) | RD(SLJIT_R0) | RN(SLJIT_R0) | RM(SLJIT_R1));
1300 }
1301
1302 return SLJIT_SUCCESS;
1303 }
1304
1305 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op1(struct sljit_compiler *compiler, sljit_s32 op,
1306 sljit_s32 dst, sljit_sw dstw,
1307 sljit_s32 src, sljit_sw srcw)
1308 {
1309 sljit_s32 dst_r, flags, mem_flags;
1310 sljit_s32 op_flags = GET_ALL_FLAGS(op);
1311
1312 CHECK_ERROR();
1313 CHECK(check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw));
1314 ADJUST_LOCAL_OFFSET(dst, dstw);
1315 ADJUST_LOCAL_OFFSET(src, srcw);
1316
1317 compiler->cache_arg = 0;
1318 compiler->cache_argw = 0;
1319
1320 if (dst == SLJIT_UNUSED && !HAS_FLAGS(op)) {
1321 if (op <= SLJIT_MOV_P && (src & SLJIT_MEM)) {
1322 SLJIT_ASSERT(reg_map[1] == 0 && reg_map[3] == 2 && reg_map[5] == 4);
1323
1324 if (op >= SLJIT_MOV_U8 && op <= SLJIT_MOV_S8)
1325 dst = 5;
1326 else if (op >= SLJIT_MOV_U16 && op <= SLJIT_MOV_S16)
1327 dst = 3;
1328 else
1329 dst = 1;
1330
1331 /* Signed word sized load is the prefetch instruction. */
1332 return emit_op_mem(compiler, WORD_SIZE | SIGNED, dst, src, srcw);
1333 }
1334 return SLJIT_SUCCESS;
1335 }
1336
1337 dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG1;
1338
1339 op = GET_OPCODE(op);
1340 if (op >= SLJIT_MOV && op <= SLJIT_MOVU_P) {
1341 switch (op) {
1342 case SLJIT_MOV:
1343 case SLJIT_MOV_P:
1344 flags = WORD_SIZE;
1345 break;
1346 case SLJIT_MOV_U8:
1347 flags = BYTE_SIZE;
1348 if (src & SLJIT_IMM)
1349 srcw = (sljit_u8)srcw;
1350 break;
1351 case SLJIT_MOV_S8:
1352 flags = BYTE_SIZE | SIGNED;
1353 if (src & SLJIT_IMM)
1354 srcw = (sljit_s8)srcw;
1355 break;
1356 case SLJIT_MOV_U16:
1357 flags = HALF_SIZE;
1358 if (src & SLJIT_IMM)
1359 srcw = (sljit_u16)srcw;
1360 break;
1361 case SLJIT_MOV_S16:
1362 flags = HALF_SIZE | SIGNED;
1363 if (src & SLJIT_IMM)
1364 srcw = (sljit_s16)srcw;
1365 break;
1366 case SLJIT_MOV_U32:
1367 flags = INT_SIZE;
1368 if (src & SLJIT_IMM)
1369 srcw = (sljit_u32)srcw;
1370 break;
1371 case SLJIT_MOV_S32:
1372 flags = INT_SIZE | SIGNED;
1373 if (src & SLJIT_IMM)
1374 srcw = (sljit_s32)srcw;
1375 break;
1376 case SLJIT_MOVU:
1377 case SLJIT_MOVU_P:
1378 flags = WORD_SIZE | UPDATE;
1379 break;
1380 case SLJIT_MOVU_U8:
1381 flags = BYTE_SIZE | UPDATE;
1382 if (src & SLJIT_IMM)
1383 srcw = (sljit_u8)srcw;
1384 break;
1385 case SLJIT_MOVU_S8:
1386 flags = BYTE_SIZE | SIGNED | UPDATE;
1387 if (src & SLJIT_IMM)
1388 srcw = (sljit_s8)srcw;
1389 break;
1390 case SLJIT_MOVU_U16:
1391 flags = HALF_SIZE | UPDATE;
1392 if (src & SLJIT_IMM)
1393 srcw = (sljit_u16)srcw;
1394 break;
1395 case SLJIT_MOVU_S16:
1396 flags = HALF_SIZE | SIGNED | UPDATE;
1397 if (src & SLJIT_IMM)
1398 srcw = (sljit_s16)srcw;
1399 break;
1400 case SLJIT_MOVU_U32:
1401 flags = INT_SIZE | UPDATE;
1402 if (src & SLJIT_IMM)
1403 srcw = (sljit_u32)srcw;
1404 break;
1405 case SLJIT_MOVU_S32:
1406 flags = INT_SIZE | SIGNED | UPDATE;
1407 if (src & SLJIT_IMM)
1408 srcw = (sljit_s32)srcw;
1409 break;
1410 default:
1411 SLJIT_UNREACHABLE();
1412 flags = 0;
1413 break;
1414 }
1415
1416 if (src & SLJIT_IMM)
1417 FAIL_IF(emit_op_imm(compiler, SLJIT_MOV | ARG2_IMM, dst_r, TMP_REG1, srcw));
1418 else if (src & SLJIT_MEM) {
1419 if (getput_arg_fast(compiler, flags, dst_r, src, srcw))
1420 FAIL_IF(compiler->error);
1421 else
1422 FAIL_IF(getput_arg(compiler, flags, dst_r, src, srcw, dst, dstw));
1423 } else {
1424 if (dst_r != TMP_REG1)
1425 return emit_op_imm(compiler, op | ((op_flags & SLJIT_I32_OP) ? INT_OP : 0), dst_r, TMP_REG1, src);
1426 dst_r = src;
1427 }
1428
1429 if (dst & SLJIT_MEM) {
1430 if (getput_arg_fast(compiler, flags | STORE, dst_r, dst, dstw))
1431 return compiler->error;
1432 else
1433 return getput_arg(compiler, flags | STORE, dst_r, dst, dstw, 0, 0);
1434 }
1435 return SLJIT_SUCCESS;
1436 }
1437
1438 flags = HAS_FLAGS(op_flags) ? SET_FLAGS : 0;
1439 mem_flags = WORD_SIZE;
1440 if (op_flags & SLJIT_I32_OP) {
1441 flags |= INT_OP;
1442 mem_flags = INT_SIZE;
1443 }
1444
1445 if (dst == SLJIT_UNUSED)
1446 flags |= UNUSED_RETURN;
1447
1448 if (src & SLJIT_MEM) {
1449 if (getput_arg_fast(compiler, mem_flags, TMP_REG2, src, srcw))
1450 FAIL_IF(compiler->error);
1451 else
1452 FAIL_IF(getput_arg(compiler, mem_flags, TMP_REG2, src, srcw, dst, dstw));
1453 src = TMP_REG2;
1454 }
1455
1456 if (src & SLJIT_IMM) {
1457 flags |= ARG2_IMM;
1458 if (op_flags & SLJIT_I32_OP)
1459 srcw = (sljit_s32)srcw;
1460 } else
1461 srcw = src;
1462
1463 emit_op_imm(compiler, flags | op, dst_r, TMP_REG1, srcw);
1464
1465 if (dst & SLJIT_MEM) {
1466 if (getput_arg_fast(compiler, mem_flags | STORE, dst_r, dst, dstw))
1467 return compiler->error;
1468 else
1469 return getput_arg(compiler, mem_flags | STORE, dst_r, dst, dstw, 0, 0);
1470 }
1471 return SLJIT_SUCCESS;
1472 }
1473
1474 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op2(struct sljit_compiler *compiler, sljit_s32 op,
1475 sljit_s32 dst, sljit_sw dstw,
1476 sljit_s32 src1, sljit_sw src1w,
1477 sljit_s32 src2, sljit_sw src2w)
1478 {
1479 sljit_s32 dst_r, flags, mem_flags;
1480
1481 CHECK_ERROR();
1482 CHECK(check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w));
1483 ADJUST_LOCAL_OFFSET(dst, dstw);
1484 ADJUST_LOCAL_OFFSET(src1, src1w);
1485 ADJUST_LOCAL_OFFSET(src2, src2w);
1486
1487 compiler->cache_arg = 0;
1488 compiler->cache_argw = 0;
1489
1490 if (dst == SLJIT_UNUSED && !HAS_FLAGS(op))
1491 return SLJIT_SUCCESS;
1492
1493 dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG1;
1494 flags = HAS_FLAGS(op) ? SET_FLAGS : 0;
1495 mem_flags = WORD_SIZE;
1496 if (op & SLJIT_I32_OP) {
1497 flags |= INT_OP;
1498 mem_flags = INT_SIZE;
1499 }
1500
1501 if (dst == SLJIT_UNUSED)
1502 flags |= UNUSED_RETURN;
1503
1504 if ((dst & SLJIT_MEM) && !getput_arg_fast(compiler, mem_flags | STORE | ARG_TEST, TMP_REG1, dst, dstw))
1505 flags |= SLOW_DEST;
1506
1507 if (src1 & SLJIT_MEM) {
1508 if (getput_arg_fast(compiler, mem_flags, TMP_REG1, src1, src1w))
1509 FAIL_IF(compiler->error);
1510 else
1511 flags |= SLOW_SRC1;
1512 }
1513 if (src2 & SLJIT_MEM) {
1514 if (getput_arg_fast(compiler, mem_flags, TMP_REG2, src2, src2w))
1515 FAIL_IF(compiler->error);
1516 else
1517 flags |= SLOW_SRC2;
1518 }
1519
1520 if ((flags & (SLOW_SRC1 | SLOW_SRC2)) == (SLOW_SRC1 | SLOW_SRC2)) {
1521 if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
1522 FAIL_IF(getput_arg(compiler, mem_flags, TMP_REG2, src2, src2w, src1, src1w));
1523 FAIL_IF(getput_arg(compiler, mem_flags, TMP_REG1, src1, src1w, dst, dstw));
1524 }
1525 else {
1526 FAIL_IF(getput_arg(compiler, mem_flags, TMP_REG1, src1, src1w, src2, src2w));
1527 FAIL_IF(getput_arg(compiler, mem_flags, TMP_REG2, src2, src2w, dst, dstw));
1528 }
1529 }
1530 else if (flags & SLOW_SRC1)
1531 FAIL_IF(getput_arg(compiler, mem_flags, TMP_REG1, src1, src1w, dst, dstw));
1532 else if (flags & SLOW_SRC2)
1533 FAIL_IF(getput_arg(compiler, mem_flags, TMP_REG2, src2, src2w, dst, dstw));
1534
1535 if (src1 & SLJIT_MEM)
1536 src1 = TMP_REG1;
1537 if (src2 & SLJIT_MEM)
1538 src2 = TMP_REG2;
1539
1540 if (src1 & SLJIT_IMM)
1541 flags |= ARG1_IMM;
1542 else
1543 src1w = src1;
1544 if (src2 & SLJIT_IMM)
1545 flags |= ARG2_IMM;
1546 else
1547 src2w = src2;
1548
1549 emit_op_imm(compiler, flags | GET_OPCODE(op), dst_r, src1w, src2w);
1550
1551 if (dst & SLJIT_MEM) {
1552 if (!(flags & SLOW_DEST)) {
1553 getput_arg_fast(compiler, mem_flags | STORE, dst_r, dst, dstw);
1554 return compiler->error;
1555 }
1556 return getput_arg(compiler, mem_flags | STORE, TMP_REG1, dst, dstw, 0, 0);
1557 }
1558
1559 return SLJIT_SUCCESS;
1560 }
1561
1562 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_register_index(sljit_s32 reg)
1563 {
1564 CHECK_REG_INDEX(check_sljit_get_register_index(reg));
1565 return reg_map[reg];
1566 }
1567
1568 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_float_register_index(sljit_s32 reg)
1569 {
1570 CHECK_REG_INDEX(check_sljit_get_float_register_index(reg));
1571 return reg;
1572 }
1573
1574 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_custom(struct sljit_compiler *compiler,
1575 void *instruction, sljit_s32 size)
1576 {
1577 CHECK_ERROR();
1578 CHECK(check_sljit_emit_op_custom(compiler, instruction, size));
1579
1580 return push_inst(compiler, *(sljit_ins*)instruction);
1581 }
1582
1583 /* --------------------------------------------------------------------- */
1584 /* Floating point operators */
1585 /* --------------------------------------------------------------------- */
1586
1587 static sljit_s32 emit_fop_mem(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, sljit_s32 arg, sljit_sw argw)
1588 {
1589 sljit_u32 shift = MEM_SIZE_SHIFT(flags);
1590 sljit_ins ins_bits = (shift << 30);
1591 sljit_s32 other_r;
1592 sljit_sw diff;
1593
1594 SLJIT_ASSERT(arg & SLJIT_MEM);
1595
1596 if (!(flags & STORE))
1597 ins_bits |= 1 << 22;
1598
1599 if (arg & OFFS_REG_MASK) {
1600 argw &= 3;
1601 if (!argw || argw == shift)
1602 return push_inst(compiler, STR_FR | ins_bits | VT(reg)
1603 | RN(arg & REG_MASK) | RM(OFFS_REG(arg)) | (argw ? (1 << 12) : 0));
1604 other_r = OFFS_REG(arg);
1605 arg &= REG_MASK;
1606 FAIL_IF(push_inst(compiler, ADD | RD(TMP_REG1) | RN(arg) | RM(other_r) | (argw << 10)));
1607 arg = TMP_REG1;
1608 argw = 0;
1609 }
1610
1611 arg &= REG_MASK;
1612 if (arg && argw >= 0 && ((argw >> shift) <= 0xfff) && (argw & ((1 << shift) - 1)) == 0)
1613 return push_inst(compiler, STR_FI | ins_bits | VT(reg) | RN(arg) | (argw << (10 - shift)));
1614
1615 if (arg && argw <= 255 && argw >= -256)
1616 return push_inst(compiler, STUR_FI | ins_bits | VT(reg) | RN(arg) | ((argw & 0x1ff) << 12));
1617
1618 /* Slow cases */
1619 if (compiler->cache_arg == SLJIT_MEM && argw != compiler->cache_argw) {
1620 diff = argw - compiler->cache_argw;
1621 if (!arg && diff <= 255 && diff >= -256)
1622 return push_inst(compiler, STUR_FI | ins_bits | VT(reg) | RN(TMP_REG3) | ((diff & 0x1ff) << 12));
1623 if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, argw - compiler->cache_argw) != SLJIT_ERR_UNSUPPORTED) {
1624 FAIL_IF(compiler->error);
1625 compiler->cache_argw = argw;
1626 }
1627 }
1628
1629 if (compiler->cache_arg != SLJIT_MEM || argw != compiler->cache_argw) {
1630 compiler->cache_arg = SLJIT_MEM;
1631 compiler->cache_argw = argw;
1632 FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1633 }
1634
1635 if (arg & REG_MASK)
1636 return push_inst(compiler, STR_FR | ins_bits | VT(reg) | RN(arg) | RM(TMP_REG3));
1637 return push_inst(compiler, STR_FI | ins_bits | VT(reg) | RN(TMP_REG3));
1638 }
1639
1640 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_sw_from_f64(struct sljit_compiler *compiler, sljit_s32 op,
1641 sljit_s32 dst, sljit_sw dstw,
1642 sljit_s32 src, sljit_sw srcw)
1643 {
1644 sljit_s32 dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1;
1645 sljit_ins inv_bits = (op & SLJIT_F32_OP) ? (1 << 22) : 0;
1646
1647 if (GET_OPCODE(op) == SLJIT_CONV_S32_FROM_F64)
1648 inv_bits |= (1 << 31);
1649
1650 if (src & SLJIT_MEM) {
1651 emit_fop_mem(compiler, (op & SLJIT_F32_OP) ? INT_SIZE : WORD_SIZE, TMP_FREG1, src, srcw);
1652 src = TMP_FREG1;
1653 }
1654
1655 FAIL_IF(push_inst(compiler, (FCVTZS ^ inv_bits) | RD(dst_r) | VN(src)));
1656
1657 if (dst & SLJIT_MEM)
1658 return emit_op_mem(compiler, ((GET_OPCODE(op) == SLJIT_CONV_S32_FROM_F64) ? INT_SIZE : WORD_SIZE) | STORE, TMP_REG1, dst, dstw);
1659 return SLJIT_SUCCESS;
1660 }
1661
1662 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_f64_from_sw(struct sljit_compiler *compiler, sljit_s32 op,
1663 sljit_s32 dst, sljit_sw dstw,
1664 sljit_s32 src, sljit_sw srcw)
1665 {
1666 sljit_s32 dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1;
1667 sljit_ins inv_bits = (op & SLJIT_F32_OP) ? (1 << 22) : 0;
1668
1669 if (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_S32)
1670 inv_bits |= (1 << 31);
1671
1672 if (src & SLJIT_MEM) {
1673 emit_op_mem(compiler, ((GET_OPCODE(op) == SLJIT_CONV_F64_FROM_S32) ? INT_SIZE : WORD_SIZE), TMP_REG1, src, srcw);
1674 src = TMP_REG1;
1675 } else if (src & SLJIT_IMM) {
1676 #if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
1677 if (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_S32)
1678 srcw = (sljit_s32)srcw;
1679 #endif
1680 FAIL_IF(load_immediate(compiler, TMP_REG1, srcw));
1681 src = TMP_REG1;
1682 }
1683
1684 FAIL_IF(push_inst(compiler, (SCVTF ^ inv_bits) | VD(dst_r) | RN(src)));
1685
1686 if (dst & SLJIT_MEM)
1687 return emit_fop_mem(compiler, ((op & SLJIT_F32_OP) ? INT_SIZE : WORD_SIZE) | STORE, TMP_FREG1, dst, dstw);
1688 return SLJIT_SUCCESS;
1689 }
1690
1691 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_cmp(struct sljit_compiler *compiler, sljit_s32 op,
1692 sljit_s32 src1, sljit_sw src1w,
1693 sljit_s32 src2, sljit_sw src2w)
1694 {
1695 sljit_s32 mem_flags = (op & SLJIT_F32_OP) ? INT_SIZE : WORD_SIZE;
1696 sljit_ins inv_bits = (op & SLJIT_F32_OP) ? (1 << 22) : 0;
1697
1698 if (src1 & SLJIT_MEM) {
1699 emit_fop_mem(compiler, mem_flags, TMP_FREG1, src1, src1w);
1700 src1 = TMP_FREG1;
1701 }
1702
1703 if (src2 & SLJIT_MEM) {
1704 emit_fop_mem(compiler, mem_flags, TMP_FREG2, src2, src2w);
1705 src2 = TMP_FREG2;
1706 }
1707
1708 return push_inst(compiler, (FCMP ^ inv_bits) | VN(src1) | VM(src2));
1709 }
1710
1711 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop1(struct sljit_compiler *compiler, sljit_s32 op,
1712 sljit_s32 dst, sljit_sw dstw,
1713 sljit_s32 src, sljit_sw srcw)
1714 {
1715 sljit_s32 dst_r, mem_flags = (op & SLJIT_F32_OP) ? INT_SIZE : WORD_SIZE;
1716 sljit_ins inv_bits;
1717
1718 CHECK_ERROR();
1719 compiler->cache_arg = 0;
1720 compiler->cache_argw = 0;
1721
1722 SLJIT_COMPILE_ASSERT((INT_SIZE ^ 0x100) == WORD_SIZE, must_be_one_bit_difference);
1723 SELECT_FOP1_OPERATION_WITH_CHECKS(compiler, op, dst, dstw, src, srcw);
1724
1725 inv_bits = (op & SLJIT_F32_OP) ? (1 << 22) : 0;
1726 dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1;
1727
1728 if (src & SLJIT_MEM) {
1729 emit_fop_mem(compiler, (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_F32) ? (mem_flags ^ 0x100) : mem_flags, dst_r, src, srcw);
1730 src = dst_r;
1731 }
1732
1733 switch (GET_OPCODE(op)) {
1734 case SLJIT_MOV_F64:
1735 if (src != dst_r) {
1736 if (dst_r != TMP_FREG1)
1737 FAIL_IF(push_inst(compiler, (FMOV ^ inv_bits) | VD(dst_r) | VN(src)));
1738 else
1739 dst_r = src;
1740 }
1741 break;
1742 case SLJIT_NEG_F64:
1743 FAIL_IF(push_inst(compiler, (FNEG ^ inv_bits) | VD(dst_r) | VN(src)));
1744 break;
1745 case SLJIT_ABS_F64:
1746 FAIL_IF(push_inst(compiler, (FABS ^ inv_bits) | VD(dst_r) | VN(src)));
1747 break;
1748 case SLJIT_CONV_F64_FROM_F32:
1749 FAIL_IF(push_inst(compiler, FCVT | ((op & SLJIT_F32_OP) ? (1 << 22) : (1 << 15)) | VD(dst_r) | VN(src)));
1750 break;
1751 }
1752
1753 if (dst & SLJIT_MEM)
1754 return emit_fop_mem(compiler, mem_flags | STORE, dst_r, dst, dstw);
1755 return SLJIT_SUCCESS;
1756 }
1757
1758 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop2(struct sljit_compiler *compiler, sljit_s32 op,
1759 sljit_s32 dst, sljit_sw dstw,
1760 sljit_s32 src1, sljit_sw src1w,
1761 sljit_s32 src2, sljit_sw src2w)
1762 {
1763 sljit_s32 dst_r, mem_flags = (op & SLJIT_F32_OP) ? INT_SIZE : WORD_SIZE;
1764 sljit_ins inv_bits = (op & SLJIT_F32_OP) ? (1 << 22) : 0;
1765
1766 CHECK_ERROR();
1767 CHECK(check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w));
1768 ADJUST_LOCAL_OFFSET(dst, dstw);
1769 ADJUST_LOCAL_OFFSET(src1, src1w);
1770 ADJUST_LOCAL_OFFSET(src2, src2w);
1771
1772 compiler->cache_arg = 0;
1773 compiler->cache_argw = 0;
1774
1775 dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1;
1776 if (src1 & SLJIT_MEM) {
1777 emit_fop_mem(compiler, mem_flags, TMP_FREG1, src1, src1w);
1778 src1 = TMP_FREG1;
1779 }
1780 if (src2 & SLJIT_MEM) {
1781 emit_fop_mem(compiler, mem_flags, TMP_FREG2, src2, src2w);
1782 src2 = TMP_FREG2;
1783 }
1784
1785 switch (GET_OPCODE(op)) {
1786 case SLJIT_ADD_F64:
1787 FAIL_IF(push_inst(compiler, (FADD ^ inv_bits) | VD(dst_r) | VN(src1) | VM(src2)));
1788 break;
1789 case SLJIT_SUB_F64:
1790 FAIL_IF(push_inst(compiler, (FSUB ^ inv_bits) | VD(dst_r) | VN(src1) | VM(src2)));
1791 break;
1792 case SLJIT_MUL_F64:
1793 FAIL_IF(push_inst(compiler, (FMUL ^ inv_bits) | VD(dst_r) | VN(src1) | VM(src2)));
1794 break;
1795 case SLJIT_DIV_F64:
1796 FAIL_IF(push_inst(compiler, (FDIV ^ inv_bits) | VD(dst_r) | VN(src1) | VM(src2)));
1797 break;
1798 }
1799
1800 if (!(dst & SLJIT_MEM))
1801 return SLJIT_SUCCESS;
1802 return emit_fop_mem(compiler, mem_flags | STORE, TMP_FREG1, dst, dstw);
1803 }
1804
1805 /* --------------------------------------------------------------------- */
1806 /* Other instructions */
1807 /* --------------------------------------------------------------------- */
1808
1809 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw)
1810 {
1811 CHECK_ERROR();
1812 CHECK(check_sljit_emit_fast_enter(compiler, dst, dstw));
1813 ADJUST_LOCAL_OFFSET(dst, dstw);
1814
1815 if (FAST_IS_REG(dst))
1816 return push_inst(compiler, ORR | RD(dst) | RN(TMP_ZERO) | RM(TMP_LR));
1817
1818 /* Memory. */
1819 return emit_op_mem(compiler, WORD_SIZE | STORE, TMP_LR, dst, dstw);
1820 }
1821
1822 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_return(struct sljit_compiler *compiler, sljit_s32 src, sljit_sw srcw)
1823 {
1824 CHECK_ERROR();
1825 CHECK(check_sljit_emit_fast_return(compiler, src, srcw));
1826 ADJUST_LOCAL_OFFSET(src, srcw);
1827
1828 if (FAST_IS_REG(src))
1829 FAIL_IF(push_inst(compiler, ORR | RD(TMP_LR) | RN(TMP_ZERO) | RM(src)));
1830 else if (src & SLJIT_MEM)
1831 FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_LR, src, srcw));
1832 else if (src & SLJIT_IMM)
1833 FAIL_IF(load_immediate(compiler, TMP_LR, srcw));
1834
1835 return push_inst(compiler, RET | RN(TMP_LR));
1836 }
1837
1838 /* --------------------------------------------------------------------- */
1839 /* Conditional instructions */
1840 /* --------------------------------------------------------------------- */
1841
1842 static sljit_uw get_cc(sljit_s32 type)
1843 {
1844 switch (type) {
1845 case SLJIT_EQUAL:
1846 case SLJIT_MUL_NOT_OVERFLOW:
1847 case SLJIT_EQUAL_F64:
1848 return 0x1;
1849
1850 case SLJIT_NOT_EQUAL:
1851 case SLJIT_MUL_OVERFLOW:
1852 case SLJIT_NOT_EQUAL_F64:
1853 return 0x0;
1854
1855 case SLJIT_LESS:
1856 case SLJIT_LESS_F64:
1857 return 0x2;
1858
1859 case SLJIT_GREATER_EQUAL:
1860 case SLJIT_GREATER_EQUAL_F64:
1861 return 0x3;
1862
1863 case SLJIT_GREATER:
1864 case SLJIT_GREATER_F64:
1865 return 0x9;
1866
1867 case SLJIT_LESS_EQUAL:
1868 case SLJIT_LESS_EQUAL_F64:
1869 return 0x8;
1870
1871 case SLJIT_SIG_LESS:
1872 return 0xa;
1873
1874 case SLJIT_SIG_GREATER_EQUAL:
1875 return 0xb;
1876
1877 case SLJIT_SIG_GREATER:
1878 return 0xd;
1879
1880 case SLJIT_SIG_LESS_EQUAL:
1881 return 0xc;
1882
1883 case SLJIT_OVERFLOW:
1884 case SLJIT_UNORDERED_F64:
1885 return 0x7;
1886
1887 case SLJIT_NOT_OVERFLOW:
1888 case SLJIT_ORDERED_F64:
1889 return 0x6;
1890
1891 default:
1892 SLJIT_UNREACHABLE();
1893 return 0xe;
1894 }
1895 }
1896
1897 SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler)
1898 {
1899 struct sljit_label *label;
1900
1901 CHECK_ERROR_PTR();
1902 CHECK_PTR(check_sljit_emit_label(compiler));
1903
1904 if (compiler->last_label && compiler->last_label->size == compiler->size)
1905 return compiler->last_label;
1906
1907 label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label));
1908 PTR_FAIL_IF(!label);
1909 set_label(label, compiler);
1910 return label;
1911 }
1912
1913 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, sljit_s32 type)
1914 {
1915 struct sljit_jump *jump;
1916
1917 CHECK_ERROR_PTR();
1918 CHECK_PTR(check_sljit_emit_jump(compiler, type));
1919
1920 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1921 PTR_FAIL_IF(!jump);
1922 set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1923 type &= 0xff;
1924
1925 if (type < SLJIT_JUMP) {
1926 jump->flags |= IS_COND;
1927 PTR_FAIL_IF(push_inst(compiler, B_CC | (6 << 5) | get_cc(type)));
1928 }
1929 else if (type >= SLJIT_FAST_CALL)
1930 jump->flags |= IS_BL;
1931
1932 PTR_FAIL_IF(emit_imm64_const(compiler, TMP_REG1, 0));
1933 jump->addr = compiler->size;
1934 PTR_FAIL_IF(push_inst(compiler, ((type >= SLJIT_FAST_CALL) ? BLR : BR) | RN(TMP_REG1)));
1935
1936 return jump;
1937 }
1938
1939 static SLJIT_INLINE struct sljit_jump* emit_cmp_to0(struct sljit_compiler *compiler, sljit_s32 type,
1940 sljit_s32 src, sljit_sw srcw)
1941 {
1942 struct sljit_jump *jump;
1943 sljit_ins inv_bits = (type & SLJIT_I32_OP) ? (1 << 31) : 0;
1944
1945 SLJIT_ASSERT((type & 0xff) == SLJIT_EQUAL || (type & 0xff) == SLJIT_NOT_EQUAL);
1946 ADJUST_LOCAL_OFFSET(src, srcw);
1947
1948 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1949 PTR_FAIL_IF(!jump);
1950 set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1951 jump->flags |= IS_CBZ | IS_COND;
1952
1953 if (src & SLJIT_MEM) {
1954 PTR_FAIL_IF(emit_op_mem(compiler, inv_bits ? INT_SIZE : WORD_SIZE, TMP_REG1, src, srcw));
1955 src = TMP_REG1;
1956 }
1957 else if (src & SLJIT_IMM) {
1958 PTR_FAIL_IF(load_immediate(compiler, TMP_REG1, srcw));
1959 src = TMP_REG1;
1960 }
1961 SLJIT_ASSERT(FAST_IS_REG(src));
1962
1963 if ((type & 0xff) == SLJIT_EQUAL)
1964 inv_bits |= 1 << 24;
1965
1966 PTR_FAIL_IF(push_inst(compiler, (CBZ ^ inv_bits) | (6 << 5) | RT(src)));
1967 PTR_FAIL_IF(emit_imm64_const(compiler, TMP_REG1, 0));
1968 jump->addr = compiler->size;
1969 PTR_FAIL_IF(push_inst(compiler, BR | RN(TMP_REG1)));
1970 return jump;
1971 }
1972
1973 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_ijump(struct sljit_compiler *compiler, sljit_s32 type, sljit_s32 src, sljit_sw srcw)
1974 {
1975 struct sljit_jump *jump;
1976
1977 CHECK_ERROR();
1978 CHECK(check_sljit_emit_ijump(compiler, type, src, srcw));
1979 ADJUST_LOCAL_OFFSET(src, srcw);
1980
1981 /* In ARM, we don't need to touch the arguments. */
1982 if (!(src & SLJIT_IMM)) {
1983 if (src & SLJIT_MEM) {
1984 FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG1, src, srcw));
1985 src = TMP_REG1;
1986 }
1987 return push_inst(compiler, ((type >= SLJIT_FAST_CALL) ? BLR : BR) | RN(src));
1988 }
1989
1990 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1991 FAIL_IF(!jump);
1992 set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_BL : 0));
1993 jump->u.target = srcw;
1994
1995 FAIL_IF(emit_imm64_const(compiler, TMP_REG1, 0));
1996 jump->addr = compiler->size;
1997 return push_inst(compiler, ((type >= SLJIT_FAST_CALL) ? BLR : BR) | RN(TMP_REG1));
1998 }
1999
2000 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_flags(struct sljit_compiler *compiler, sljit_s32 op,
2001 sljit_s32 dst, sljit_sw dstw,
2002 sljit_s32 type)
2003 {
2004 sljit_s32 dst_r, src_r, flags, mem_flags;
2005 sljit_ins cc;
2006
2007 CHECK_ERROR();
2008 CHECK(check_sljit_emit_op_flags(compiler, op, dst, dstw, type));
2009 ADJUST_LOCAL_OFFSET(dst, dstw);
2010
2011 cc = get_cc(type & 0xff);
2012 dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1;
2013
2014 if (GET_OPCODE(op) < SLJIT_ADD) {
2015 FAIL_IF(push_inst(compiler, CSINC | (cc << 12) | RD(dst_r) | RN(TMP_ZERO) | RM(TMP_ZERO)));
2016 if (dst_r != TMP_REG1)
2017 return SLJIT_SUCCESS;
2018 return emit_op_mem(compiler, (GET_OPCODE(op) == SLJIT_MOV ? WORD_SIZE : INT_SIZE) | STORE, TMP_REG1, dst, dstw);
2019 }
2020
2021 compiler->cache_arg = 0;
2022 compiler->cache_argw = 0;
2023 flags = HAS_FLAGS(op) ? SET_FLAGS : 0;
2024 mem_flags = WORD_SIZE;
2025 if (op & SLJIT_I32_OP) {
2026 flags |= INT_OP;
2027 mem_flags = INT_SIZE;
2028 }
2029
2030 src_r = dst;
2031
2032 if (dst & SLJIT_MEM) {
2033 FAIL_IF(emit_op_mem2(compiler, mem_flags, TMP_REG1, dst, dstw, dst, dstw));
2034 src_r = TMP_REG1;
2035 }
2036
2037 FAIL_IF(push_inst(compiler, CSINC | (cc << 12) | RD(TMP_REG2) | RN(TMP_ZERO) | RM(TMP_ZERO)));
2038 emit_op_imm(compiler, flags | GET_OPCODE(op), dst_r, src_r, TMP_REG2);
2039
2040 if (dst & SLJIT_MEM)
2041 return emit_op_mem2(compiler, mem_flags | STORE, TMP_REG1, dst, dstw, 0, 0);
2042 return SLJIT_SUCCESS;
2043 }
2044
2045 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_cmov(struct sljit_compiler *compiler, sljit_s32 type,
2046 sljit_s32 dst_reg,
2047 sljit_s32 src, sljit_sw srcw)
2048 {
2049 sljit_ins inv_bits = (dst_reg & SLJIT_I32_OP) ? (1 << 31) : 0;
2050 sljit_ins cc;
2051
2052 CHECK_ERROR();
2053 CHECK(check_sljit_emit_cmov(compiler, type, dst_reg, src, srcw));
2054
2055 if (SLJIT_UNLIKELY(src & SLJIT_IMM)) {
2056 if (dst_reg & SLJIT_I32_OP)
2057 srcw = (sljit_s32)srcw;
2058 FAIL_IF(load_immediate(compiler, TMP_REG1, srcw));
2059 src = TMP_REG1;
2060 srcw = 0;
2061 }
2062
2063 cc = get_cc(type & 0xff);
2064 dst_reg &= ~SLJIT_I32_OP;
2065
2066 return push_inst(compiler, (CSEL ^ inv_bits) | (cc << 12) | RD(dst_reg) | RN(dst_reg) | RM(src));
2067 }
2068
2069 SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw, sljit_sw init_value)
2070 {
2071 struct sljit_const *const_;
2072 sljit_s32 dst_r;
2073
2074 CHECK_ERROR_PTR();
2075 CHECK_PTR(check_sljit_emit_const(compiler, dst, dstw, init_value));
2076 ADJUST_LOCAL_OFFSET(dst, dstw);
2077
2078 const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const));
2079 PTR_FAIL_IF(!const_);
2080 set_const(const_, compiler);
2081
2082 dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1;
2083 PTR_FAIL_IF(emit_imm64_const(compiler, dst_r, init_value));
2084
2085 if (dst & SLJIT_MEM)
2086 PTR_FAIL_IF(emit_op_mem(compiler, WORD_SIZE | STORE, dst_r, dst, dstw));
2087 return const_;
2088 }
2089
2090 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_target, sljit_sw executable_offset)
2091 {
2092 sljit_ins* inst = (sljit_ins*)addr;
2093 modify_imm64_const(inst, new_target);
2094 inst = (sljit_ins *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
2095 SLJIT_CACHE_FLUSH(inst, inst + 4);
2096 }
2097
2098 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant, sljit_sw executable_offset)
2099 {
2100 sljit_ins* inst = (sljit_ins*)addr;
2101 modify_imm64_const(inst, new_constant);
2102 inst = (sljit_ins *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
2103 SLJIT_CACHE_FLUSH(inst, inst + 4);
2104 }
Platform independent low-level JIT compiler (github mirror, with mob branch)