/[pcre]/code/trunk/sljit/sljitNativeARM_Thumb2.c
ViewVC logotype

Contents of /code/trunk/sljit/sljitNativeARM_Thumb2.c

Parent Directory Parent Directory | Revision Log Revision Log


Revision 1453 - (show annotations)
Thu Jan 30 06:10:21 2014 UTC (5 years, 6 months ago) by zherczeg
File MIME type: text/plain
File size: 62395 byte(s)
JIT compiler update.
1 /*
2 * Stack-less Just-In-Time compiler
3 *
4 * Copyright 2009-2012 Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without modification, are
7 * permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice, this list of
10 * conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
13 * of conditions and the following disclaimer in the documentation and/or other materials
14 * provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
19 * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
21 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
22 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 SLJIT_API_FUNC_ATTRIBUTE SLJIT_CONST char* sljit_get_platform_name(void)
28 {
29 return "ARM-Thumb2" SLJIT_CPUINFO;
30 }
31
32 /* Length of an instruction word. */
33 typedef sljit_ui sljit_ins;
34
35 /* Last register + 1. */
36 #define TMP_REG1 (SLJIT_NO_REGISTERS + 1)
37 #define TMP_REG2 (SLJIT_NO_REGISTERS + 2)
38 #define TMP_REG3 (SLJIT_NO_REGISTERS + 3)
39 #define TMP_PC (SLJIT_NO_REGISTERS + 4)
40
41 #define TMP_FREG1 (0)
42 #define TMP_FREG2 (SLJIT_FLOAT_REG6 + 1)
43
44 /* See sljit_emit_enter and sljit_emit_op0 if you want to change them. */
45 static SLJIT_CONST sljit_ub reg_map[SLJIT_NO_REGISTERS + 5] = {
46 0, 0, 1, 2, 12, 5, 6, 7, 8, 10, 11, 13, 3, 4, 14, 15
47 };
48
49 #define COPY_BITS(src, from, to, bits) \
50 ((from >= to ? (src >> (from - to)) : (src << (to - from))) & (((1 << bits) - 1) << to))
51
52 /* Thumb16 encodings. */
53 #define RD3(rd) (reg_map[rd])
54 #define RN3(rn) (reg_map[rn] << 3)
55 #define RM3(rm) (reg_map[rm] << 6)
56 #define RDN3(rdn) (reg_map[rdn] << 8)
57 #define IMM3(imm) (imm << 6)
58 #define IMM8(imm) (imm)
59
60 /* Thumb16 helpers. */
61 #define SET_REGS44(rd, rn) \
62 ((reg_map[rn] << 3) | (reg_map[rd] & 0x7) | ((reg_map[rd] & 0x8) << 4))
63 #define IS_2_LO_REGS(reg1, reg2) \
64 (reg_map[reg1] <= 7 && reg_map[reg2] <= 7)
65 #define IS_3_LO_REGS(reg1, reg2, reg3) \
66 (reg_map[reg1] <= 7 && reg_map[reg2] <= 7 && reg_map[reg3] <= 7)
67
68 /* Thumb32 encodings. */
69 #define RD4(rd) (reg_map[rd] << 8)
70 #define RN4(rn) (reg_map[rn] << 16)
71 #define RM4(rm) (reg_map[rm])
72 #define RT4(rt) (reg_map[rt] << 12)
73 #define DD4(dd) ((dd) << 12)
74 #define DN4(dn) ((dn) << 16)
75 #define DM4(dm) (dm)
76 #define IMM5(imm) \
77 (COPY_BITS(imm, 2, 12, 3) | ((imm & 0x3) << 6))
78 #define IMM12(imm) \
79 (COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff))
80
81 /* --------------------------------------------------------------------- */
82 /* Instrucion forms */
83 /* --------------------------------------------------------------------- */
84
85 /* dot '.' changed to _
86 I immediate form (possibly followed by number of immediate bits). */
87 #define ADCI 0xf1400000
88 #define ADCS 0x4140
89 #define ADC_W 0xeb400000
90 #define ADD 0x4400
91 #define ADDS 0x1800
92 #define ADDSI3 0x1c00
93 #define ADDSI8 0x3000
94 #define ADD_W 0xeb000000
95 #define ADDWI 0xf2000000
96 #define ADD_SP 0xb000
97 #define ADD_W 0xeb000000
98 #define ADD_WI 0xf1000000
99 #define ANDI 0xf0000000
100 #define ANDS 0x4000
101 #define AND_W 0xea000000
102 #define ASRS 0x4100
103 #define ASRSI 0x1000
104 #define ASR_W 0xfa40f000
105 #define ASR_WI 0xea4f0020
106 #define BICI 0xf0200000
107 #define BKPT 0xbe00
108 #define BLX 0x4780
109 #define BX 0x4700
110 #define CLZ 0xfab0f080
111 #define CMPI 0x2800
112 #define CMP_W 0xebb00f00
113 #define EORI 0xf0800000
114 #define EORS 0x4040
115 #define EOR_W 0xea800000
116 #define IT 0xbf00
117 #define LSLS 0x4080
118 #define LSLSI 0x0000
119 #define LSL_W 0xfa00f000
120 #define LSL_WI 0xea4f0000
121 #define LSRS 0x40c0
122 #define LSRSI 0x0800
123 #define LSR_W 0xfa20f000
124 #define LSR_WI 0xea4f0010
125 #define MOV 0x4600
126 #define MOVS 0x0000
127 #define MOVSI 0x2000
128 #define MOVT 0xf2c00000
129 #define MOVW 0xf2400000
130 #define MOV_W 0xea4f0000
131 #define MOV_WI 0xf04f0000
132 #define MUL 0xfb00f000
133 #define MVNS 0x43c0
134 #define MVN_W 0xea6f0000
135 #define MVN_WI 0xf06f0000
136 #define NOP 0xbf00
137 #define ORNI 0xf0600000
138 #define ORRI 0xf0400000
139 #define ORRS 0x4300
140 #define ORR_W 0xea400000
141 #define POP 0xbd00
142 #define POP_W 0xe8bd0000
143 #define PUSH 0xb500
144 #define PUSH_W 0xe92d0000
145 #define RSB_WI 0xf1c00000
146 #define RSBSI 0x4240
147 #define SBCI 0xf1600000
148 #define SBCS 0x4180
149 #define SBC_W 0xeb600000
150 #define SMULL 0xfb800000
151 #define STR_SP 0x9000
152 #define SUBS 0x1a00
153 #define SUBSI3 0x1e00
154 #define SUBSI8 0x3800
155 #define SUB_W 0xeba00000
156 #define SUBWI 0xf2a00000
157 #define SUB_SP 0xb080
158 #define SUB_WI 0xf1a00000
159 #define SXTB 0xb240
160 #define SXTB_W 0xfa4ff080
161 #define SXTH 0xb200
162 #define SXTH_W 0xfa0ff080
163 #define TST 0x4200
164 #define UMULL 0xfba00000
165 #define UXTB 0xb2c0
166 #define UXTB_W 0xfa5ff080
167 #define UXTH 0xb280
168 #define UXTH_W 0xfa1ff080
169 #define VABS_F32 0xeeb00ac0
170 #define VADD_F32 0xee300a00
171 #define VCMP_F32 0xeeb40a40
172 #define VDIV_F32 0xee800a00
173 #define VMOV_F32 0xeeb00a40
174 #define VMRS 0xeef1fa10
175 #define VMUL_F32 0xee200a00
176 #define VNEG_F32 0xeeb10a40
177 #define VSTR_F32 0xed000a00
178 #define VSUB_F32 0xee300a40
179
180 static sljit_si push_inst16(struct sljit_compiler *compiler, sljit_ins inst)
181 {
182 sljit_uh *ptr;
183 SLJIT_ASSERT(!(inst & 0xffff0000));
184
185 ptr = (sljit_uh*)ensure_buf(compiler, sizeof(sljit_uh));
186 FAIL_IF(!ptr);
187 *ptr = inst;
188 compiler->size++;
189 return SLJIT_SUCCESS;
190 }
191
192 static sljit_si push_inst32(struct sljit_compiler *compiler, sljit_ins inst)
193 {
194 sljit_uh *ptr = (sljit_uh*)ensure_buf(compiler, sizeof(sljit_ins));
195 FAIL_IF(!ptr);
196 *ptr++ = inst >> 16;
197 *ptr = inst;
198 compiler->size += 2;
199 return SLJIT_SUCCESS;
200 }
201
202 static SLJIT_INLINE sljit_si emit_imm32_const(struct sljit_compiler *compiler, sljit_si dst, sljit_uw imm)
203 {
204 FAIL_IF(push_inst32(compiler, MOVW | RD4(dst) |
205 COPY_BITS(imm, 12, 16, 4) | COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff)));
206 return push_inst32(compiler, MOVT | RD4(dst) |
207 COPY_BITS(imm, 12 + 16, 16, 4) | COPY_BITS(imm, 11 + 16, 26, 1) | COPY_BITS(imm, 8 + 16, 12, 3) | ((imm & 0xff0000) >> 16));
208 }
209
210 static SLJIT_INLINE void modify_imm32_const(sljit_uh *inst, sljit_uw new_imm)
211 {
212 sljit_si dst = inst[1] & 0x0f00;
213 SLJIT_ASSERT(((inst[0] & 0xfbf0) == (MOVW >> 16)) && ((inst[2] & 0xfbf0) == (MOVT >> 16)) && dst == (inst[3] & 0x0f00));
214 inst[0] = (MOVW >> 16) | COPY_BITS(new_imm, 12, 0, 4) | COPY_BITS(new_imm, 11, 10, 1);
215 inst[1] = dst | COPY_BITS(new_imm, 8, 12, 3) | (new_imm & 0xff);
216 inst[2] = (MOVT >> 16) | COPY_BITS(new_imm, 12 + 16, 0, 4) | COPY_BITS(new_imm, 11 + 16, 10, 1);
217 inst[3] = dst | COPY_BITS(new_imm, 8 + 16, 12, 3) | ((new_imm & 0xff0000) >> 16);
218 }
219
220 static SLJIT_INLINE sljit_si detect_jump_type(struct sljit_jump *jump, sljit_uh *code_ptr, sljit_uh *code)
221 {
222 sljit_sw diff;
223
224 if (jump->flags & SLJIT_REWRITABLE_JUMP)
225 return 0;
226
227 if (jump->flags & JUMP_ADDR) {
228 /* Branch to ARM code is not optimized yet. */
229 if (!(jump->u.target & 0x1))
230 return 0;
231 diff = ((sljit_sw)jump->u.target - (sljit_sw)(code_ptr + 2)) >> 1;
232 }
233 else {
234 SLJIT_ASSERT(jump->flags & JUMP_LABEL);
235 diff = ((sljit_sw)(code + jump->u.label->size) - (sljit_sw)(code_ptr + 2)) >> 1;
236 }
237
238 if (jump->flags & IS_COND) {
239 SLJIT_ASSERT(!(jump->flags & IS_BL));
240 if (diff <= 127 && diff >= -128) {
241 jump->flags |= PATCH_TYPE1;
242 return 5;
243 }
244 if (diff <= 524287 && diff >= -524288) {
245 jump->flags |= PATCH_TYPE2;
246 return 4;
247 }
248 /* +1 comes from the prefix IT instruction. */
249 diff--;
250 if (diff <= 8388607 && diff >= -8388608) {
251 jump->flags |= PATCH_TYPE3;
252 return 3;
253 }
254 }
255 else if (jump->flags & IS_BL) {
256 if (diff <= 8388607 && diff >= -8388608) {
257 jump->flags |= PATCH_BL;
258 return 3;
259 }
260 }
261 else {
262 if (diff <= 1023 && diff >= -1024) {
263 jump->flags |= PATCH_TYPE4;
264 return 4;
265 }
266 if (diff <= 8388607 && diff >= -8388608) {
267 jump->flags |= PATCH_TYPE5;
268 return 3;
269 }
270 }
271
272 return 0;
273 }
274
275 static SLJIT_INLINE void set_jump_instruction(struct sljit_jump *jump)
276 {
277 sljit_si type = (jump->flags >> 4) & 0xf;
278 sljit_sw diff;
279 sljit_uh *jump_inst;
280 sljit_si s, j1, j2;
281
282 if (SLJIT_UNLIKELY(type == 0)) {
283 modify_imm32_const((sljit_uh*)jump->addr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target);
284 return;
285 }
286
287 if (jump->flags & JUMP_ADDR) {
288 SLJIT_ASSERT(jump->u.target & 0x1);
289 diff = ((sljit_sw)jump->u.target - (sljit_sw)(jump->addr + 4)) >> 1;
290 }
291 else
292 diff = ((sljit_sw)(jump->u.label->addr) - (sljit_sw)(jump->addr + 4)) >> 1;
293 jump_inst = (sljit_uh*)jump->addr;
294
295 switch (type) {
296 case 1:
297 /* Encoding T1 of 'B' instruction */
298 SLJIT_ASSERT(diff <= 127 && diff >= -128 && (jump->flags & IS_COND));
299 jump_inst[0] = 0xd000 | (jump->flags & 0xf00) | (diff & 0xff);
300 return;
301 case 2:
302 /* Encoding T3 of 'B' instruction */
303 SLJIT_ASSERT(diff <= 524287 && diff >= -524288 && (jump->flags & IS_COND));
304 jump_inst[0] = 0xf000 | COPY_BITS(jump->flags, 8, 6, 4) | COPY_BITS(diff, 11, 0, 6) | COPY_BITS(diff, 19, 10, 1);
305 jump_inst[1] = 0x8000 | COPY_BITS(diff, 17, 13, 1) | COPY_BITS(diff, 18, 11, 1) | (diff & 0x7ff);
306 return;
307 case 3:
308 SLJIT_ASSERT(jump->flags & IS_COND);
309 *jump_inst++ = IT | ((jump->flags >> 4) & 0xf0) | 0x8;
310 diff--;
311 type = 5;
312 break;
313 case 4:
314 /* Encoding T2 of 'B' instruction */
315 SLJIT_ASSERT(diff <= 1023 && diff >= -1024 && !(jump->flags & IS_COND));
316 jump_inst[0] = 0xe000 | (diff & 0x7ff);
317 return;
318 }
319
320 SLJIT_ASSERT(diff <= 8388607 && diff >= -8388608);
321
322 /* Really complex instruction form for branches. */
323 s = (diff >> 23) & 0x1;
324 j1 = (~(diff >> 21) ^ s) & 0x1;
325 j2 = (~(diff >> 22) ^ s) & 0x1;
326 jump_inst[0] = 0xf000 | (s << 10) | COPY_BITS(diff, 11, 0, 10);
327 jump_inst[1] = (j1 << 13) | (j2 << 11) | (diff & 0x7ff);
328
329 /* The others have a common form. */
330 if (type == 5) /* Encoding T4 of 'B' instruction */
331 jump_inst[1] |= 0x9000;
332 else if (type == 6) /* Encoding T1 of 'BL' instruction */
333 jump_inst[1] |= 0xd000;
334 else
335 SLJIT_ASSERT_STOP();
336 }
337
338 SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler)
339 {
340 struct sljit_memory_fragment *buf;
341 sljit_uh *code;
342 sljit_uh *code_ptr;
343 sljit_uh *buf_ptr;
344 sljit_uh *buf_end;
345 sljit_uw half_count;
346
347 struct sljit_label *label;
348 struct sljit_jump *jump;
349 struct sljit_const *const_;
350
351 CHECK_ERROR_PTR();
352 check_sljit_generate_code(compiler);
353 reverse_buf(compiler);
354
355 code = (sljit_uh*)SLJIT_MALLOC_EXEC(compiler->size * sizeof(sljit_uh));
356 PTR_FAIL_WITH_EXEC_IF(code);
357 buf = compiler->buf;
358
359 code_ptr = code;
360 half_count = 0;
361 label = compiler->labels;
362 jump = compiler->jumps;
363 const_ = compiler->consts;
364
365 do {
366 buf_ptr = (sljit_uh*)buf->memory;
367 buf_end = buf_ptr + (buf->used_size >> 1);
368 do {
369 *code_ptr = *buf_ptr++;
370 /* These structures are ordered by their address. */
371 SLJIT_ASSERT(!label || label->size >= half_count);
372 SLJIT_ASSERT(!jump || jump->addr >= half_count);
373 SLJIT_ASSERT(!const_ || const_->addr >= half_count);
374 if (label && label->size == half_count) {
375 label->addr = ((sljit_uw)code_ptr) | 0x1;
376 label->size = code_ptr - code;
377 label = label->next;
378 }
379 if (jump && jump->addr == half_count) {
380 jump->addr = (sljit_uw)code_ptr - ((jump->flags & IS_COND) ? 10 : 8);
381 code_ptr -= detect_jump_type(jump, code_ptr, code);
382 jump = jump->next;
383 }
384 if (const_ && const_->addr == half_count) {
385 const_->addr = (sljit_uw)code_ptr;
386 const_ = const_->next;
387 }
388 code_ptr ++;
389 half_count ++;
390 } while (buf_ptr < buf_end);
391
392 buf = buf->next;
393 } while (buf);
394
395 if (label && label->size == half_count) {
396 label->addr = ((sljit_uw)code_ptr) | 0x1;
397 label->size = code_ptr - code;
398 label = label->next;
399 }
400
401 SLJIT_ASSERT(!label);
402 SLJIT_ASSERT(!jump);
403 SLJIT_ASSERT(!const_);
404 SLJIT_ASSERT(code_ptr - code <= (sljit_sw)compiler->size);
405
406 jump = compiler->jumps;
407 while (jump) {
408 set_jump_instruction(jump);
409 jump = jump->next;
410 }
411
412 compiler->error = SLJIT_ERR_COMPILED;
413 compiler->executable_size = (code_ptr - code) * sizeof(sljit_uh);
414 SLJIT_CACHE_FLUSH(code, code_ptr);
415 /* Set thumb mode flag. */
416 return (void*)((sljit_uw)code | 0x1);
417 }
418
419 /* --------------------------------------------------------------------- */
420 /* Core code generator functions. */
421 /* --------------------------------------------------------------------- */
422
423 #define INVALID_IMM 0x80000000
424 static sljit_uw get_imm(sljit_uw imm)
425 {
426 /* Thumb immediate form. */
427 sljit_si counter;
428
429 if (imm <= 0xff)
430 return imm;
431
432 if ((imm & 0xffff) == (imm >> 16)) {
433 /* Some special cases. */
434 if (!(imm & 0xff00))
435 return (1 << 12) | (imm & 0xff);
436 if (!(imm & 0xff))
437 return (2 << 12) | ((imm >> 8) & 0xff);
438 if ((imm & 0xff00) == ((imm & 0xff) << 8))
439 return (3 << 12) | (imm & 0xff);
440 }
441
442 /* Assembly optimization: count leading zeroes? */
443 counter = 8;
444 if (!(imm & 0xffff0000)) {
445 counter += 16;
446 imm <<= 16;
447 }
448 if (!(imm & 0xff000000)) {
449 counter += 8;
450 imm <<= 8;
451 }
452 if (!(imm & 0xf0000000)) {
453 counter += 4;
454 imm <<= 4;
455 }
456 if (!(imm & 0xc0000000)) {
457 counter += 2;
458 imm <<= 2;
459 }
460 if (!(imm & 0x80000000)) {
461 counter += 1;
462 imm <<= 1;
463 }
464 /* Since imm >= 128, this must be true. */
465 SLJIT_ASSERT(counter <= 31);
466
467 if (imm & 0x00ffffff)
468 return INVALID_IMM; /* Cannot be encoded. */
469
470 return ((imm >> 24) & 0x7f) | COPY_BITS(counter, 4, 26, 1) | COPY_BITS(counter, 1, 12, 3) | COPY_BITS(counter, 0, 7, 1);
471 }
472
473 static sljit_si load_immediate(struct sljit_compiler *compiler, sljit_si dst, sljit_uw imm)
474 {
475 sljit_uw tmp;
476
477 if (imm >= 0x10000) {
478 tmp = get_imm(imm);
479 if (tmp != INVALID_IMM)
480 return push_inst32(compiler, MOV_WI | RD4(dst) | tmp);
481 tmp = get_imm(~imm);
482 if (tmp != INVALID_IMM)
483 return push_inst32(compiler, MVN_WI | RD4(dst) | tmp);
484 }
485
486 /* set low 16 bits, set hi 16 bits to 0. */
487 FAIL_IF(push_inst32(compiler, MOVW | RD4(dst) |
488 COPY_BITS(imm, 12, 16, 4) | COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff)));
489
490 /* set hi 16 bit if needed. */
491 if (imm >= 0x10000)
492 return push_inst32(compiler, MOVT | RD4(dst) |
493 COPY_BITS(imm, 12 + 16, 16, 4) | COPY_BITS(imm, 11 + 16, 26, 1) | COPY_BITS(imm, 8 + 16, 12, 3) | ((imm & 0xff0000) >> 16));
494 return SLJIT_SUCCESS;
495 }
496
497 #define ARG1_IMM 0x0010000
498 #define ARG2_IMM 0x0020000
499 #define KEEP_FLAGS 0x0040000
500 /* SET_FLAGS must be 0x100000 as it is also the value of S bit (can be used for optimization). */
501 #define SET_FLAGS 0x0100000
502 #define UNUSED_RETURN 0x0200000
503 #define SLOW_DEST 0x0400000
504 #define SLOW_SRC1 0x0800000
505 #define SLOW_SRC2 0x1000000
506
507 static sljit_si emit_op_imm(struct sljit_compiler *compiler, sljit_si flags, sljit_si dst, sljit_uw arg1, sljit_uw arg2)
508 {
509 /* dst must be register, TMP_REG1
510 arg1 must be register, TMP_REG1, imm
511 arg2 must be register, TMP_REG2, imm */
512 sljit_si reg;
513 sljit_uw imm, nimm;
514
515 if (SLJIT_UNLIKELY((flags & (ARG1_IMM | ARG2_IMM)) == (ARG1_IMM | ARG2_IMM))) {
516 /* Both are immediates. */
517 flags &= ~ARG1_IMM;
518 FAIL_IF(load_immediate(compiler, TMP_REG1, arg1));
519 arg1 = TMP_REG1;
520 }
521
522 if (flags & (ARG1_IMM | ARG2_IMM)) {
523 reg = (flags & ARG2_IMM) ? arg1 : arg2;
524 imm = (flags & ARG2_IMM) ? arg2 : arg1;
525
526 switch (flags & 0xffff) {
527 case SLJIT_CLZ:
528 case SLJIT_MUL:
529 /* No form with immediate operand. */
530 break;
531 case SLJIT_MOV:
532 SLJIT_ASSERT(!(flags & SET_FLAGS) && (flags & ARG2_IMM) && arg1 == TMP_REG1);
533 return load_immediate(compiler, dst, imm);
534 case SLJIT_NOT:
535 if (!(flags & SET_FLAGS))
536 return load_immediate(compiler, dst, ~imm);
537 /* Since the flags should be set, we just fallback to the register mode.
538 Although some clever things could be done here, "NOT IMM" does not worth the efforts. */
539 break;
540 case SLJIT_ADD:
541 nimm = -imm;
542 if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(reg, dst)) {
543 if (imm <= 0x7)
544 return push_inst16(compiler, ADDSI3 | IMM3(imm) | RD3(dst) | RN3(reg));
545 if (nimm <= 0x7)
546 return push_inst16(compiler, SUBSI3 | IMM3(nimm) | RD3(dst) | RN3(reg));
547 if (reg == dst) {
548 if (imm <= 0xff)
549 return push_inst16(compiler, ADDSI8 | IMM8(imm) | RDN3(dst));
550 if (nimm <= 0xff)
551 return push_inst16(compiler, SUBSI8 | IMM8(nimm) | RDN3(dst));
552 }
553 }
554 if (!(flags & SET_FLAGS)) {
555 if (imm <= 0xfff)
556 return push_inst32(compiler, ADDWI | RD4(dst) | RN4(reg) | IMM12(imm));
557 if (nimm <= 0xfff)
558 return push_inst32(compiler, SUBWI | RD4(dst) | RN4(reg) | IMM12(nimm));
559 }
560 imm = get_imm(imm);
561 if (imm != INVALID_IMM)
562 return push_inst32(compiler, ADD_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
563 break;
564 case SLJIT_ADDC:
565 imm = get_imm(imm);
566 if (imm != INVALID_IMM)
567 return push_inst32(compiler, ADCI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
568 break;
569 case SLJIT_SUB:
570 if (flags & ARG1_IMM) {
571 if (!(flags & KEEP_FLAGS) && imm == 0 && IS_2_LO_REGS(reg, dst))
572 return push_inst16(compiler, RSBSI | RD3(dst) | RN3(reg));
573 imm = get_imm(imm);
574 if (imm != INVALID_IMM)
575 return push_inst32(compiler, RSB_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
576 break;
577 }
578 nimm = -imm;
579 if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(reg, dst)) {
580 if (imm <= 0x7)
581 return push_inst16(compiler, SUBSI3 | IMM3(imm) | RD3(dst) | RN3(reg));
582 if (nimm <= 0x7)
583 return push_inst16(compiler, ADDSI3 | IMM3(nimm) | RD3(dst) | RN3(reg));
584 if (reg == dst) {
585 if (imm <= 0xff)
586 return push_inst16(compiler, SUBSI8 | IMM8(imm) | RDN3(dst));
587 if (nimm <= 0xff)
588 return push_inst16(compiler, ADDSI8 | IMM8(nimm) | RDN3(dst));
589 }
590 if (imm <= 0xff && (flags & UNUSED_RETURN))
591 return push_inst16(compiler, CMPI | IMM8(imm) | RDN3(reg));
592 }
593 if (!(flags & SET_FLAGS)) {
594 if (imm <= 0xfff)
595 return push_inst32(compiler, SUBWI | RD4(dst) | RN4(reg) | IMM12(imm));
596 if (nimm <= 0xfff)
597 return push_inst32(compiler, ADDWI | RD4(dst) | RN4(reg) | IMM12(nimm));
598 }
599 imm = get_imm(imm);
600 if (imm != INVALID_IMM)
601 return push_inst32(compiler, SUB_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
602 break;
603 case SLJIT_SUBC:
604 if (flags & ARG1_IMM)
605 break;
606 imm = get_imm(imm);
607 if (imm != INVALID_IMM)
608 return push_inst32(compiler, SBCI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
609 break;
610 case SLJIT_AND:
611 nimm = get_imm(imm);
612 if (nimm != INVALID_IMM)
613 return push_inst32(compiler, ANDI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm);
614 imm = get_imm(imm);
615 if (imm != INVALID_IMM)
616 return push_inst32(compiler, BICI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
617 break;
618 case SLJIT_OR:
619 nimm = get_imm(imm);
620 if (nimm != INVALID_IMM)
621 return push_inst32(compiler, ORRI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm);
622 imm = get_imm(imm);
623 if (imm != INVALID_IMM)
624 return push_inst32(compiler, ORNI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
625 break;
626 case SLJIT_XOR:
627 imm = get_imm(imm);
628 if (imm != INVALID_IMM)
629 return push_inst32(compiler, EORI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
630 break;
631 case SLJIT_SHL:
632 case SLJIT_LSHR:
633 case SLJIT_ASHR:
634 if (flags & ARG1_IMM)
635 break;
636 imm &= 0x1f;
637 if (imm == 0) {
638 if (!(flags & SET_FLAGS))
639 return push_inst16(compiler, MOV | SET_REGS44(dst, reg));
640 if (IS_2_LO_REGS(dst, reg))
641 return push_inst16(compiler, MOVS | RD3(dst) | RN3(reg));
642 return push_inst32(compiler, MOV_W | SET_FLAGS | RD4(dst) | RM4(reg));
643 }
644 switch (flags & 0xffff) {
645 case SLJIT_SHL:
646 if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, reg))
647 return push_inst16(compiler, LSLSI | RD3(dst) | RN3(reg) | (imm << 6));
648 return push_inst32(compiler, LSL_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm));
649 case SLJIT_LSHR:
650 if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, reg))
651 return push_inst16(compiler, LSRSI | RD3(dst) | RN3(reg) | (imm << 6));
652 return push_inst32(compiler, LSR_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm));
653 default: /* SLJIT_ASHR */
654 if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, reg))
655 return push_inst16(compiler, ASRSI | RD3(dst) | RN3(reg) | (imm << 6));
656 return push_inst32(compiler, ASR_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm));
657 }
658 default:
659 SLJIT_ASSERT_STOP();
660 break;
661 }
662
663 if (flags & ARG2_IMM) {
664 FAIL_IF(load_immediate(compiler, TMP_REG2, arg2));
665 arg2 = TMP_REG2;
666 }
667 else {
668 FAIL_IF(load_immediate(compiler, TMP_REG1, arg1));
669 arg1 = TMP_REG1;
670 }
671 }
672
673 /* Both arguments are registers. */
674 switch (flags & 0xffff) {
675 case SLJIT_MOV:
676 case SLJIT_MOV_UI:
677 case SLJIT_MOV_SI:
678 case SLJIT_MOV_P:
679 case SLJIT_MOVU:
680 case SLJIT_MOVU_UI:
681 case SLJIT_MOVU_SI:
682 case SLJIT_MOVU_P:
683 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
684 if (dst == arg2)
685 return SLJIT_SUCCESS;
686 return push_inst16(compiler, MOV | SET_REGS44(dst, arg2));
687 case SLJIT_MOV_UB:
688 case SLJIT_MOVU_UB:
689 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
690 if (IS_2_LO_REGS(dst, arg2))
691 return push_inst16(compiler, UXTB | RD3(dst) | RN3(arg2));
692 return push_inst32(compiler, UXTB_W | RD4(dst) | RM4(arg2));
693 case SLJIT_MOV_SB:
694 case SLJIT_MOVU_SB:
695 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
696 if (IS_2_LO_REGS(dst, arg2))
697 return push_inst16(compiler, SXTB | RD3(dst) | RN3(arg2));
698 return push_inst32(compiler, SXTB_W | RD4(dst) | RM4(arg2));
699 case SLJIT_MOV_UH:
700 case SLJIT_MOVU_UH:
701 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
702 if (IS_2_LO_REGS(dst, arg2))
703 return push_inst16(compiler, UXTH | RD3(dst) | RN3(arg2));
704 return push_inst32(compiler, UXTH_W | RD4(dst) | RM4(arg2));
705 case SLJIT_MOV_SH:
706 case SLJIT_MOVU_SH:
707 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
708 if (IS_2_LO_REGS(dst, arg2))
709 return push_inst16(compiler, SXTH | RD3(dst) | RN3(arg2));
710 return push_inst32(compiler, SXTH_W | RD4(dst) | RM4(arg2));
711 case SLJIT_NOT:
712 SLJIT_ASSERT(arg1 == TMP_REG1);
713 if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
714 return push_inst16(compiler, MVNS | RD3(dst) | RN3(arg2));
715 return push_inst32(compiler, MVN_W | (flags & SET_FLAGS) | RD4(dst) | RM4(arg2));
716 case SLJIT_CLZ:
717 SLJIT_ASSERT(arg1 == TMP_REG1);
718 FAIL_IF(push_inst32(compiler, CLZ | RN4(arg2) | RD4(dst) | RM4(arg2)));
719 if (flags & SET_FLAGS) {
720 if (reg_map[dst] <= 7)
721 return push_inst16(compiler, CMPI | RDN3(dst));
722 return push_inst32(compiler, ADD_WI | SET_FLAGS | RN4(dst) | RD4(dst));
723 }
724 return SLJIT_SUCCESS;
725 case SLJIT_ADD:
726 if (!(flags & KEEP_FLAGS) && IS_3_LO_REGS(dst, arg1, arg2))
727 return push_inst16(compiler, ADDS | RD3(dst) | RN3(arg1) | RM3(arg2));
728 if (dst == arg1 && !(flags & SET_FLAGS))
729 return push_inst16(compiler, ADD | SET_REGS44(dst, arg2));
730 return push_inst32(compiler, ADD_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
731 case SLJIT_ADDC:
732 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
733 return push_inst16(compiler, ADCS | RD3(dst) | RN3(arg2));
734 return push_inst32(compiler, ADC_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
735 case SLJIT_SUB:
736 if (!(flags & KEEP_FLAGS) && IS_3_LO_REGS(dst, arg1, arg2))
737 return push_inst16(compiler, SUBS | RD3(dst) | RN3(arg1) | RM3(arg2));
738 return push_inst32(compiler, SUB_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
739 case SLJIT_SUBC:
740 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
741 return push_inst16(compiler, SBCS | RD3(dst) | RN3(arg2));
742 return push_inst32(compiler, SBC_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
743 case SLJIT_MUL:
744 if (!(flags & SET_FLAGS))
745 return push_inst32(compiler, MUL | RD4(dst) | RN4(arg1) | RM4(arg2));
746 SLJIT_ASSERT(reg_map[TMP_REG2] <= 7 && dst != TMP_REG2);
747 FAIL_IF(push_inst32(compiler, SMULL | RT4(dst) | RD4(TMP_REG2) | RN4(arg1) | RM4(arg2)));
748 /* cmp TMP_REG2, dst asr #31. */
749 return push_inst32(compiler, CMP_W | RN4(TMP_REG2) | 0x70e0 | RM4(dst));
750 case SLJIT_AND:
751 if (!(flags & KEEP_FLAGS)) {
752 if (dst == arg1 && IS_2_LO_REGS(dst, arg2))
753 return push_inst16(compiler, ANDS | RD3(dst) | RN3(arg2));
754 if ((flags & UNUSED_RETURN) && IS_2_LO_REGS(arg1, arg2))
755 return push_inst16(compiler, TST | RD3(arg1) | RN3(arg2));
756 }
757 return push_inst32(compiler, AND_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
758 case SLJIT_OR:
759 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
760 return push_inst16(compiler, ORRS | RD3(dst) | RN3(arg2));
761 return push_inst32(compiler, ORR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
762 case SLJIT_XOR:
763 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
764 return push_inst16(compiler, EORS | RD3(dst) | RN3(arg2));
765 return push_inst32(compiler, EOR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
766 case SLJIT_SHL:
767 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
768 return push_inst16(compiler, LSLS | RD3(dst) | RN3(arg2));
769 return push_inst32(compiler, LSL_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
770 case SLJIT_LSHR:
771 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
772 return push_inst16(compiler, LSRS | RD3(dst) | RN3(arg2));
773 return push_inst32(compiler, LSR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
774 case SLJIT_ASHR:
775 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
776 return push_inst16(compiler, ASRS | RD3(dst) | RN3(arg2));
777 return push_inst32(compiler, ASR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
778 }
779
780 SLJIT_ASSERT_STOP();
781 return SLJIT_SUCCESS;
782 }
783
784 #define STORE 0x01
785 #define SIGNED 0x02
786
787 #define WORD_SIZE 0x00
788 #define BYTE_SIZE 0x04
789 #define HALF_SIZE 0x08
790
791 #define UPDATE 0x10
792 #define ARG_TEST 0x20
793
794 #define IS_WORD_SIZE(flags) (!(flags & (BYTE_SIZE | HALF_SIZE)))
795 #define OFFSET_CHECK(imm, shift) (!(argw & ~(imm << shift)))
796
797 /*
798 1st letter:
799 w = word
800 b = byte
801 h = half
802
803 2nd letter:
804 s = signed
805 u = unsigned
806
807 3rd letter:
808 l = load
809 s = store
810 */
811
812 static SLJIT_CONST sljit_ins sljit_mem16[12] = {
813 /* w u l */ 0x5800 /* ldr */,
814 /* w u s */ 0x5000 /* str */,
815 /* w s l */ 0x5800 /* ldr */,
816 /* w s s */ 0x5000 /* str */,
817
818 /* b u l */ 0x5c00 /* ldrb */,
819 /* b u s */ 0x5400 /* strb */,
820 /* b s l */ 0x5600 /* ldrsb */,
821 /* b s s */ 0x5400 /* strb */,
822
823 /* h u l */ 0x5a00 /* ldrh */,
824 /* h u s */ 0x5200 /* strh */,
825 /* h s l */ 0x5e00 /* ldrsh */,
826 /* h s s */ 0x5200 /* strh */,
827 };
828
829 static SLJIT_CONST sljit_ins sljit_mem16_imm5[12] = {
830 /* w u l */ 0x6800 /* ldr imm5 */,
831 /* w u s */ 0x6000 /* str imm5 */,
832 /* w s l */ 0x6800 /* ldr imm5 */,
833 /* w s s */ 0x6000 /* str imm5 */,
834
835 /* b u l */ 0x7800 /* ldrb imm5 */,
836 /* b u s */ 0x7000 /* strb imm5 */,
837 /* b s l */ 0x0000 /* not allowed */,
838 /* b s s */ 0x7000 /* strb imm5 */,
839
840 /* h u l */ 0x8800 /* ldrh imm5 */,
841 /* h u s */ 0x8000 /* strh imm5 */,
842 /* h s l */ 0x0000 /* not allowed */,
843 /* h s s */ 0x8000 /* strh imm5 */,
844 };
845
846 #define MEM_IMM8 0xc00
847 #define MEM_IMM12 0x800000
848 static SLJIT_CONST sljit_ins sljit_mem32[12] = {
849 /* w u l */ 0xf8500000 /* ldr.w */,
850 /* w u s */ 0xf8400000 /* str.w */,
851 /* w s l */ 0xf8500000 /* ldr.w */,
852 /* w s s */ 0xf8400000 /* str.w */,
853
854 /* b u l */ 0xf8100000 /* ldrb.w */,
855 /* b u s */ 0xf8000000 /* strb.w */,
856 /* b s l */ 0xf9100000 /* ldrsb.w */,
857 /* b s s */ 0xf8000000 /* strb.w */,
858
859 /* h u l */ 0xf8300000 /* ldrh.w */,
860 /* h u s */ 0xf8200000 /* strsh.w */,
861 /* h s l */ 0xf9300000 /* ldrsh.w */,
862 /* h s s */ 0xf8200000 /* strsh.w */,
863 };
864
865 /* Helper function. Dst should be reg + value, using at most 1 instruction, flags does not set. */
866 static sljit_si emit_set_delta(struct sljit_compiler *compiler, sljit_si dst, sljit_si reg, sljit_sw value)
867 {
868 if (value >= 0) {
869 if (value <= 0xfff)
870 return push_inst32(compiler, ADDWI | RD4(dst) | RN4(reg) | IMM12(value));
871 value = get_imm(value);
872 if (value != INVALID_IMM)
873 return push_inst32(compiler, ADD_WI | RD4(dst) | RN4(reg) | value);
874 }
875 else {
876 value = -value;
877 if (value <= 0xfff)
878 return push_inst32(compiler, SUBWI | RD4(dst) | RN4(reg) | IMM12(value));
879 value = get_imm(value);
880 if (value != INVALID_IMM)
881 return push_inst32(compiler, SUB_WI | RD4(dst) | RN4(reg) | value);
882 }
883 return SLJIT_ERR_UNSUPPORTED;
884 }
885
886 /* Can perform an operation using at most 1 instruction. */
887 static sljit_si getput_arg_fast(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg, sljit_si arg, sljit_sw argw)
888 {
889 sljit_si other_r, shift;
890
891 SLJIT_ASSERT(arg & SLJIT_MEM);
892
893 if (SLJIT_UNLIKELY(flags & UPDATE)) {
894 if ((arg & REG_MASK) && !(arg & OFFS_REG_MASK) && argw <= 0xff && argw >= -0xff) {
895 if (SLJIT_UNLIKELY(flags & ARG_TEST))
896 return 1;
897
898 flags &= ~UPDATE;
899 arg &= 0xf;
900 if (argw >= 0)
901 argw |= 0x200;
902 else {
903 argw = -argw;
904 }
905
906 SLJIT_ASSERT(argw >= 0 && (argw & 0xff) <= 0xff);
907 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | MEM_IMM8 | RT4(reg) | RN4(arg) | 0x100 | argw));
908 return -1;
909 }
910 return 0;
911 }
912
913 if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) {
914 if (SLJIT_UNLIKELY(flags & ARG_TEST))
915 return 1;
916
917 argw &= 0x3;
918 other_r = OFFS_REG(arg);
919 arg &= 0xf;
920
921 if (!argw && IS_3_LO_REGS(reg, arg, other_r))
922 FAIL_IF(push_inst16(compiler, sljit_mem16[flags] | RD3(reg) | RN3(arg) | RM3(other_r)));
923 else
924 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(other_r) | (argw << 4)));
925 return -1;
926 }
927
928 if (!(arg & REG_MASK) || argw > 0xfff || argw < -0xff)
929 return 0;
930
931 if (SLJIT_UNLIKELY(flags & ARG_TEST))
932 return 1;
933
934 arg &= 0xf;
935 if (IS_2_LO_REGS(reg, arg) && sljit_mem16_imm5[flags]) {
936 shift = 3;
937 if (IS_WORD_SIZE(flags)) {
938 if (OFFSET_CHECK(0x1f, 2))
939 shift = 2;
940 }
941 else if (flags & BYTE_SIZE)
942 {
943 if (OFFSET_CHECK(0x1f, 0))
944 shift = 0;
945 }
946 else {
947 SLJIT_ASSERT(flags & HALF_SIZE);
948 if (OFFSET_CHECK(0x1f, 1))
949 shift = 1;
950 }
951
952 if (shift != 3) {
953 FAIL_IF(push_inst16(compiler, sljit_mem16_imm5[flags] | RD3(reg) | RN3(arg) | (argw << (6 - shift))));
954 return -1;
955 }
956 }
957
958 /* SP based immediate. */
959 if (SLJIT_UNLIKELY(arg == SLJIT_LOCALS_REG) && OFFSET_CHECK(0xff, 2) && IS_WORD_SIZE(flags) && reg_map[reg] <= 7) {
960 FAIL_IF(push_inst16(compiler, STR_SP | ((flags & STORE) ? 0 : 0x800) | RDN3(reg) | (argw >> 2)));
961 return -1;
962 }
963
964 if (argw >= 0)
965 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(arg) | argw));
966 else
967 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | MEM_IMM8 | RT4(reg) | RN4(arg) | -argw));
968 return -1;
969 }
970
971 /* see getput_arg below.
972 Note: can_cache is called only for binary operators. Those
973 operators always uses word arguments without write back. */
974 static sljit_si can_cache(sljit_si arg, sljit_sw argw, sljit_si next_arg, sljit_sw next_argw)
975 {
976 sljit_sw diff;
977 if ((arg & OFFS_REG_MASK) || !(next_arg & SLJIT_MEM))
978 return 0;
979
980 if (!(arg & REG_MASK)) {
981 diff = argw - next_argw;
982 if (diff <= 0xfff && diff >= -0xfff)
983 return 1;
984 return 0;
985 }
986
987 if (argw == next_argw)
988 return 1;
989
990 diff = argw - next_argw;
991 if (arg == next_arg && diff <= 0xfff && diff >= -0xfff)
992 return 1;
993
994 return 0;
995 }
996
997 /* Emit the necessary instructions. See can_cache above. */
998 static sljit_si getput_arg(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg,
999 sljit_si arg, sljit_sw argw, sljit_si next_arg, sljit_sw next_argw)
1000 {
1001 sljit_si tmp_r, other_r;
1002 sljit_sw diff;
1003
1004 SLJIT_ASSERT(arg & SLJIT_MEM);
1005 if (!(next_arg & SLJIT_MEM)) {
1006 next_arg = 0;
1007 next_argw = 0;
1008 }
1009
1010 tmp_r = (flags & STORE) ? TMP_REG3 : reg;
1011
1012 if (SLJIT_UNLIKELY((flags & UPDATE) && (arg & REG_MASK))) {
1013 /* Update only applies if a base register exists. */
1014 /* There is no caching here. */
1015 other_r = OFFS_REG(arg);
1016 arg &= 0xf;
1017 flags &= ~UPDATE;
1018
1019 if (!other_r) {
1020 if (!(argw & ~0xfff)) {
1021 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(arg) | argw));
1022 return push_inst32(compiler, ADDWI | RD4(arg) | RN4(arg) | IMM12(argw));
1023 }
1024
1025 if (compiler->cache_arg == SLJIT_MEM) {
1026 if (argw == compiler->cache_argw) {
1027 other_r = TMP_REG3;
1028 argw = 0;
1029 }
1030 else if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, argw - compiler->cache_argw) != SLJIT_ERR_UNSUPPORTED) {
1031 FAIL_IF(compiler->error);
1032 compiler->cache_argw = argw;
1033 other_r = TMP_REG3;
1034 argw = 0;
1035 }
1036 }
1037
1038 if (argw) {
1039 FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1040 compiler->cache_arg = SLJIT_MEM;
1041 compiler->cache_argw = argw;
1042 other_r = TMP_REG3;
1043 argw = 0;
1044 }
1045 }
1046
1047 argw &= 0x3;
1048 if (!argw && IS_3_LO_REGS(reg, arg, other_r)) {
1049 FAIL_IF(push_inst16(compiler, sljit_mem16[flags] | RD3(reg) | RN3(arg) | RM3(other_r)));
1050 return push_inst16(compiler, ADD | SET_REGS44(arg, other_r));
1051 }
1052 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(other_r) | (argw << 4)));
1053 return push_inst32(compiler, ADD_W | RD4(arg) | RN4(arg) | RM4(other_r) | (argw << 6));
1054 }
1055 flags &= ~UPDATE;
1056
1057 SLJIT_ASSERT(!(arg & OFFS_REG_MASK));
1058
1059 if (compiler->cache_arg == arg) {
1060 diff = argw - compiler->cache_argw;
1061 if (!(diff & ~0xfff))
1062 return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(TMP_REG3) | diff);
1063 if (!((compiler->cache_argw - argw) & ~0xff))
1064 return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM8 | RT4(reg) | RN4(TMP_REG3) | (compiler->cache_argw - argw));
1065 if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, diff) != SLJIT_ERR_UNSUPPORTED) {
1066 FAIL_IF(compiler->error);
1067 return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(TMP_REG3) | 0);
1068 }
1069 }
1070
1071 next_arg = (arg & REG_MASK) && (arg == next_arg) && (argw != next_argw);
1072 arg &= 0xf;
1073 if (arg && compiler->cache_arg == SLJIT_MEM) {
1074 if (compiler->cache_argw == argw)
1075 return push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(TMP_REG3));
1076 if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, argw - compiler->cache_argw) != SLJIT_ERR_UNSUPPORTED) {
1077 FAIL_IF(compiler->error);
1078 compiler->cache_argw = argw;
1079 return push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(TMP_REG3));
1080 }
1081 }
1082
1083 compiler->cache_argw = argw;
1084 if (next_arg && emit_set_delta(compiler, TMP_REG3, arg, argw) != SLJIT_ERR_UNSUPPORTED) {
1085 FAIL_IF(compiler->error);
1086 compiler->cache_arg = SLJIT_MEM | arg;
1087 arg = 0;
1088 }
1089 else {
1090 FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1091 compiler->cache_arg = SLJIT_MEM;
1092
1093 diff = argw - next_argw;
1094 if (next_arg && diff <= 0xfff && diff >= -0xfff) {
1095 FAIL_IF(push_inst16(compiler, ADD | SET_REGS44(TMP_REG3, arg)));
1096 compiler->cache_arg = SLJIT_MEM | arg;
1097 arg = 0;
1098 }
1099 }
1100
1101 if (arg)
1102 return push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(TMP_REG3));
1103 return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(TMP_REG3) | 0);
1104 }
1105
1106 static SLJIT_INLINE sljit_si emit_op_mem(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg, sljit_si arg, sljit_sw argw)
1107 {
1108 if (getput_arg_fast(compiler, flags, reg, arg, argw))
1109 return compiler->error;
1110 compiler->cache_arg = 0;
1111 compiler->cache_argw = 0;
1112 return getput_arg(compiler, flags, reg, arg, argw, 0, 0);
1113 }
1114
1115 static SLJIT_INLINE sljit_si emit_op_mem2(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg, sljit_si arg1, sljit_sw arg1w, sljit_si arg2, sljit_sw arg2w)
1116 {
1117 if (getput_arg_fast(compiler, flags, reg, arg1, arg1w))
1118 return compiler->error;
1119 return getput_arg(compiler, flags, reg, arg1, arg1w, arg2, arg2w);
1120 }
1121
1122 /* --------------------------------------------------------------------- */
1123 /* Entry, exit */
1124 /* --------------------------------------------------------------------- */
1125
1126 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_enter(struct sljit_compiler *compiler, sljit_si args, sljit_si scratches, sljit_si saveds, sljit_si local_size)
1127 {
1128 sljit_si size;
1129 sljit_ins push;
1130
1131 CHECK_ERROR();
1132 check_sljit_emit_enter(compiler, args, scratches, saveds, local_size);
1133
1134 compiler->scratches = scratches;
1135 compiler->saveds = saveds;
1136 #if (defined SLJIT_DEBUG && SLJIT_DEBUG)
1137 compiler->logical_local_size = local_size;
1138 #endif
1139
1140 push = (1 << 4);
1141 if (saveds >= 5)
1142 push |= 1 << 11;
1143 if (saveds >= 4)
1144 push |= 1 << 10;
1145 if (saveds >= 3)
1146 push |= 1 << 8;
1147 if (saveds >= 2)
1148 push |= 1 << 7;
1149 if (saveds >= 1)
1150 push |= 1 << 6;
1151 if (scratches >= 5)
1152 push |= 1 << 5;
1153 FAIL_IF(saveds >= 3
1154 ? push_inst32(compiler, PUSH_W | (1 << 14) | push)
1155 : push_inst16(compiler, PUSH | push));
1156
1157 /* Stack must be aligned to 8 bytes: */
1158 size = (3 + saveds) * sizeof(sljit_uw);
1159 local_size += size;
1160 local_size = (local_size + 7) & ~7;
1161 local_size -= size;
1162 compiler->local_size = local_size;
1163 if (local_size > 0) {
1164 if (local_size <= (127 << 2))
1165 FAIL_IF(push_inst16(compiler, SUB_SP | (local_size >> 2)));
1166 else
1167 FAIL_IF(emit_op_imm(compiler, SLJIT_SUB | ARG2_IMM, SLJIT_LOCALS_REG, SLJIT_LOCALS_REG, local_size));
1168 }
1169
1170 if (args >= 1)
1171 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_SAVED_REG1, SLJIT_SCRATCH_REG1)));
1172 if (args >= 2)
1173 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_SAVED_REG2, SLJIT_SCRATCH_REG2)));
1174 if (args >= 3)
1175 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_SAVED_REG3, SLJIT_SCRATCH_REG3)));
1176
1177 return SLJIT_SUCCESS;
1178 }
1179
1180 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_context(struct sljit_compiler *compiler, sljit_si args, sljit_si scratches, sljit_si saveds, sljit_si local_size)
1181 {
1182 sljit_si size;
1183
1184 CHECK_ERROR_VOID();
1185 check_sljit_set_context(compiler, args, scratches, saveds, local_size);
1186
1187 compiler->scratches = scratches;
1188 compiler->saveds = saveds;
1189 #if (defined SLJIT_DEBUG && SLJIT_DEBUG)
1190 compiler->logical_local_size = local_size;
1191 #endif
1192
1193 size = (3 + saveds) * sizeof(sljit_uw);
1194 local_size += size;
1195 local_size = (local_size + 7) & ~7;
1196 local_size -= size;
1197 compiler->local_size = local_size;
1198 }
1199
1200 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_return(struct sljit_compiler *compiler, sljit_si op, sljit_si src, sljit_sw srcw)
1201 {
1202 sljit_ins pop;
1203
1204 CHECK_ERROR();
1205 check_sljit_emit_return(compiler, op, src, srcw);
1206
1207 FAIL_IF(emit_mov_before_return(compiler, op, src, srcw));
1208
1209 if (compiler->local_size > 0) {
1210 if (compiler->local_size <= (127 << 2))
1211 FAIL_IF(push_inst16(compiler, ADD_SP | (compiler->local_size >> 2)));
1212 else
1213 FAIL_IF(emit_op_imm(compiler, SLJIT_ADD | ARG2_IMM, SLJIT_LOCALS_REG, SLJIT_LOCALS_REG, compiler->local_size));
1214 }
1215
1216 pop = (1 << 4);
1217 if (compiler->saveds >= 5)
1218 pop |= 1 << 11;
1219 if (compiler->saveds >= 4)
1220 pop |= 1 << 10;
1221 if (compiler->saveds >= 3)
1222 pop |= 1 << 8;
1223 if (compiler->saveds >= 2)
1224 pop |= 1 << 7;
1225 if (compiler->saveds >= 1)
1226 pop |= 1 << 6;
1227 if (compiler->scratches >= 5)
1228 pop |= 1 << 5;
1229 return compiler->saveds >= 3
1230 ? push_inst32(compiler, POP_W | (1 << 15) | pop)
1231 : push_inst16(compiler, POP | pop);
1232 }
1233
1234 /* --------------------------------------------------------------------- */
1235 /* Operators */
1236 /* --------------------------------------------------------------------- */
1237
1238 #ifdef __cplusplus
1239 extern "C" {
1240 #endif
1241
1242 #if defined(__GNUC__)
1243 extern unsigned int __aeabi_uidivmod(unsigned int numerator, int unsigned denominator);
1244 extern int __aeabi_idivmod(int numerator, int denominator);
1245 #else
1246 #error "Software divmod functions are needed"
1247 #endif
1248
1249 #ifdef __cplusplus
1250 }
1251 #endif
1252
1253 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op0(struct sljit_compiler *compiler, sljit_si op)
1254 {
1255 CHECK_ERROR();
1256 check_sljit_emit_op0(compiler, op);
1257
1258 op = GET_OPCODE(op);
1259 switch (op) {
1260 case SLJIT_BREAKPOINT:
1261 return push_inst16(compiler, BKPT);
1262 case SLJIT_NOP:
1263 return push_inst16(compiler, NOP);
1264 case SLJIT_UMUL:
1265 case SLJIT_SMUL:
1266 return push_inst32(compiler, (op == SLJIT_UMUL ? UMULL : SMULL)
1267 | (reg_map[SLJIT_SCRATCH_REG2] << 8)
1268 | (reg_map[SLJIT_SCRATCH_REG1] << 12)
1269 | (reg_map[SLJIT_SCRATCH_REG1] << 16)
1270 | reg_map[SLJIT_SCRATCH_REG2]);
1271 case SLJIT_UDIV:
1272 case SLJIT_SDIV:
1273 if (compiler->scratches >= 4) {
1274 FAIL_IF(push_inst32(compiler, 0xf84d2d04 /* str r2, [sp, #-4]! */));
1275 FAIL_IF(push_inst32(compiler, 0xf84dcd04 /* str ip, [sp, #-4]! */));
1276 } else if (compiler->scratches >= 3)
1277 FAIL_IF(push_inst32(compiler, 0xf84d2d08 /* str r2, [sp, #-8]! */));
1278 #if defined(__GNUC__)
1279 FAIL_IF(sljit_emit_ijump(compiler, SLJIT_FAST_CALL, SLJIT_IMM,
1280 (op == SLJIT_UDIV ? SLJIT_FUNC_OFFSET(__aeabi_uidivmod) : SLJIT_FUNC_OFFSET(__aeabi_idivmod))));
1281 #else
1282 #error "Software divmod functions are needed"
1283 #endif
1284 if (compiler->scratches >= 4) {
1285 FAIL_IF(push_inst32(compiler, 0xf85dcb04 /* ldr ip, [sp], #4 */));
1286 return push_inst32(compiler, 0xf85d2b04 /* ldr r2, [sp], #4 */);
1287 } else if (compiler->scratches >= 3)
1288 return push_inst32(compiler, 0xf85d2b08 /* ldr r2, [sp], #8 */);
1289 return SLJIT_SUCCESS;
1290 }
1291
1292 return SLJIT_SUCCESS;
1293 }
1294
1295 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op1(struct sljit_compiler *compiler, sljit_si op,
1296 sljit_si dst, sljit_sw dstw,
1297 sljit_si src, sljit_sw srcw)
1298 {
1299 sljit_si dst_r, flags;
1300 sljit_si op_flags = GET_ALL_FLAGS(op);
1301
1302 CHECK_ERROR();
1303 check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw);
1304 ADJUST_LOCAL_OFFSET(dst, dstw);
1305 ADJUST_LOCAL_OFFSET(src, srcw);
1306
1307 compiler->cache_arg = 0;
1308 compiler->cache_argw = 0;
1309
1310 dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG1;
1311
1312 op = GET_OPCODE(op);
1313 if (op >= SLJIT_MOV && op <= SLJIT_MOVU_P) {
1314 switch (op) {
1315 case SLJIT_MOV:
1316 case SLJIT_MOV_UI:
1317 case SLJIT_MOV_SI:
1318 case SLJIT_MOV_P:
1319 flags = WORD_SIZE;
1320 break;
1321 case SLJIT_MOV_UB:
1322 flags = BYTE_SIZE;
1323 if (src & SLJIT_IMM)
1324 srcw = (sljit_ub)srcw;
1325 break;
1326 case SLJIT_MOV_SB:
1327 flags = BYTE_SIZE | SIGNED;
1328 if (src & SLJIT_IMM)
1329 srcw = (sljit_sb)srcw;
1330 break;
1331 case SLJIT_MOV_UH:
1332 flags = HALF_SIZE;
1333 if (src & SLJIT_IMM)
1334 srcw = (sljit_uh)srcw;
1335 break;
1336 case SLJIT_MOV_SH:
1337 flags = HALF_SIZE | SIGNED;
1338 if (src & SLJIT_IMM)
1339 srcw = (sljit_sh)srcw;
1340 break;
1341 case SLJIT_MOVU:
1342 case SLJIT_MOVU_UI:
1343 case SLJIT_MOVU_SI:
1344 case SLJIT_MOVU_P:
1345 flags = WORD_SIZE | UPDATE;
1346 break;
1347 case SLJIT_MOVU_UB:
1348 flags = BYTE_SIZE | UPDATE;
1349 if (src & SLJIT_IMM)
1350 srcw = (sljit_ub)srcw;
1351 break;
1352 case SLJIT_MOVU_SB:
1353 flags = BYTE_SIZE | SIGNED | UPDATE;
1354 if (src & SLJIT_IMM)
1355 srcw = (sljit_sb)srcw;
1356 break;
1357 case SLJIT_MOVU_UH:
1358 flags = HALF_SIZE | UPDATE;
1359 if (src & SLJIT_IMM)
1360 srcw = (sljit_uh)srcw;
1361 break;
1362 case SLJIT_MOVU_SH:
1363 flags = HALF_SIZE | SIGNED | UPDATE;
1364 if (src & SLJIT_IMM)
1365 srcw = (sljit_sh)srcw;
1366 break;
1367 default:
1368 SLJIT_ASSERT_STOP();
1369 flags = 0;
1370 break;
1371 }
1372
1373 if (src & SLJIT_IMM)
1374 FAIL_IF(emit_op_imm(compiler, SLJIT_MOV | ARG2_IMM, dst_r, TMP_REG1, srcw));
1375 else if (src & SLJIT_MEM) {
1376 if (getput_arg_fast(compiler, flags, dst_r, src, srcw))
1377 FAIL_IF(compiler->error);
1378 else
1379 FAIL_IF(getput_arg(compiler, flags, dst_r, src, srcw, dst, dstw));
1380 } else {
1381 if (dst_r != TMP_REG1)
1382 return emit_op_imm(compiler, op, dst_r, TMP_REG1, src);
1383 dst_r = src;
1384 }
1385
1386 if (dst & SLJIT_MEM) {
1387 if (getput_arg_fast(compiler, flags | STORE, dst_r, dst, dstw))
1388 return compiler->error;
1389 else
1390 return getput_arg(compiler, flags | STORE, dst_r, dst, dstw, 0, 0);
1391 }
1392 return SLJIT_SUCCESS;
1393 }
1394
1395 if (op == SLJIT_NEG) {
1396 #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) || (defined SLJIT_DEBUG && SLJIT_DEBUG)
1397 compiler->skip_checks = 1;
1398 #endif
1399 return sljit_emit_op2(compiler, SLJIT_SUB | op_flags, dst, dstw, SLJIT_IMM, 0, src, srcw);
1400 }
1401
1402 flags = (GET_FLAGS(op_flags) ? SET_FLAGS : 0) | ((op_flags & SLJIT_KEEP_FLAGS) ? KEEP_FLAGS : 0);
1403 if (src & SLJIT_MEM) {
1404 if (getput_arg_fast(compiler, WORD_SIZE, TMP_REG2, src, srcw))
1405 FAIL_IF(compiler->error);
1406 else
1407 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src, srcw, dst, dstw));
1408 src = TMP_REG2;
1409 }
1410
1411 if (src & SLJIT_IMM)
1412 flags |= ARG2_IMM;
1413 else
1414 srcw = src;
1415
1416 emit_op_imm(compiler, flags | op, dst_r, TMP_REG1, srcw);
1417
1418 if (dst & SLJIT_MEM) {
1419 if (getput_arg_fast(compiler, flags | STORE, dst_r, dst, dstw))
1420 return compiler->error;
1421 else
1422 return getput_arg(compiler, flags | STORE, dst_r, dst, dstw, 0, 0);
1423 }
1424 return SLJIT_SUCCESS;
1425 }
1426
1427 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op2(struct sljit_compiler *compiler, sljit_si op,
1428 sljit_si dst, sljit_sw dstw,
1429 sljit_si src1, sljit_sw src1w,
1430 sljit_si src2, sljit_sw src2w)
1431 {
1432 sljit_si dst_r, flags;
1433
1434 CHECK_ERROR();
1435 check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w);
1436 ADJUST_LOCAL_OFFSET(dst, dstw);
1437 ADJUST_LOCAL_OFFSET(src1, src1w);
1438 ADJUST_LOCAL_OFFSET(src2, src2w);
1439
1440 compiler->cache_arg = 0;
1441 compiler->cache_argw = 0;
1442
1443 dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG1;
1444 flags = (GET_FLAGS(op) ? SET_FLAGS : 0) | ((op & SLJIT_KEEP_FLAGS) ? KEEP_FLAGS : 0);
1445
1446 if ((dst & SLJIT_MEM) && !getput_arg_fast(compiler, WORD_SIZE | STORE | ARG_TEST, TMP_REG1, dst, dstw))
1447 flags |= SLOW_DEST;
1448
1449 if (src1 & SLJIT_MEM) {
1450 if (getput_arg_fast(compiler, WORD_SIZE, TMP_REG1, src1, src1w))
1451 FAIL_IF(compiler->error);
1452 else
1453 flags |= SLOW_SRC1;
1454 }
1455 if (src2 & SLJIT_MEM) {
1456 if (getput_arg_fast(compiler, WORD_SIZE, TMP_REG2, src2, src2w))
1457 FAIL_IF(compiler->error);
1458 else
1459 flags |= SLOW_SRC2;
1460 }
1461
1462 if ((flags & (SLOW_SRC1 | SLOW_SRC2)) == (SLOW_SRC1 | SLOW_SRC2)) {
1463 if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
1464 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src2, src2w, src1, src1w));
1465 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG1, src1, src1w, dst, dstw));
1466 }
1467 else {
1468 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG1, src1, src1w, src2, src2w));
1469 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src2, src2w, dst, dstw));
1470 }
1471 }
1472 else if (flags & SLOW_SRC1)
1473 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG1, src1, src1w, dst, dstw));
1474 else if (flags & SLOW_SRC2)
1475 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src2, src2w, dst, dstw));
1476
1477 if (src1 & SLJIT_MEM)
1478 src1 = TMP_REG1;
1479 if (src2 & SLJIT_MEM)
1480 src2 = TMP_REG2;
1481
1482 if (src1 & SLJIT_IMM)
1483 flags |= ARG1_IMM;
1484 else
1485 src1w = src1;
1486 if (src2 & SLJIT_IMM)
1487 flags |= ARG2_IMM;
1488 else
1489 src2w = src2;
1490
1491 if (dst == SLJIT_UNUSED)
1492 flags |= UNUSED_RETURN;
1493
1494 emit_op_imm(compiler, flags | GET_OPCODE(op), dst_r, src1w, src2w);
1495
1496 if (dst & SLJIT_MEM) {
1497 if (!(flags & SLOW_DEST)) {
1498 getput_arg_fast(compiler, WORD_SIZE | STORE, dst_r, dst, dstw);
1499 return compiler->error;
1500 }
1501 return getput_arg(compiler, WORD_SIZE | STORE, TMP_REG1, dst, dstw, 0, 0);
1502 }
1503 return SLJIT_SUCCESS;
1504 }
1505
1506 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_get_register_index(sljit_si reg)
1507 {
1508 check_sljit_get_register_index(reg);
1509 return reg_map[reg];
1510 }
1511
1512 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_get_float_register_index(sljit_si reg)
1513 {
1514 check_sljit_get_float_register_index(reg);
1515 return reg;
1516 }
1517
1518 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op_custom(struct sljit_compiler *compiler,
1519 void *instruction, sljit_si size)
1520 {
1521 CHECK_ERROR();
1522 check_sljit_emit_op_custom(compiler, instruction, size);
1523 SLJIT_ASSERT(size == 2 || size == 4);
1524
1525 if (size == 2)
1526 return push_inst16(compiler, *(sljit_uh*)instruction);
1527 return push_inst32(compiler, *(sljit_ins*)instruction);
1528 }
1529
1530 /* --------------------------------------------------------------------- */
1531 /* Floating point operators */
1532 /* --------------------------------------------------------------------- */
1533
1534 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_is_fpu_available(void)
1535 {
1536 return 1;
1537 }
1538
1539 #define FPU_LOAD (1 << 20)
1540
1541 static sljit_si emit_fop_mem(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg, sljit_si arg, sljit_sw argw)
1542 {
1543 sljit_sw tmp;
1544 sljit_uw imm;
1545 sljit_sw inst = VSTR_F32 | (flags & (SLJIT_SINGLE_OP | FPU_LOAD));
1546
1547 SLJIT_ASSERT(arg & SLJIT_MEM);
1548
1549 /* Fast loads and stores. */
1550 if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) {
1551 FAIL_IF(push_inst32(compiler, ADD_W | RD4(TMP_REG2) | RN4(arg & REG_MASK) | RM4(OFFS_REG(arg)) | ((argw & 0x3) << 6)));
1552 arg = SLJIT_MEM | TMP_REG2;
1553 argw = 0;
1554 }
1555
1556 if ((arg & REG_MASK) && (argw & 0x3) == 0) {
1557 if (!(argw & ~0x3fc))
1558 return push_inst32(compiler, inst | 0x800000 | RN4(arg & REG_MASK) | DD4(reg) | (argw >> 2));
1559 if (!(-argw & ~0x3fc))
1560 return push_inst32(compiler, inst | RN4(arg & REG_MASK) | DD4(reg) | (-argw >> 2));
1561 }
1562
1563 /* Slow cases */
1564 SLJIT_ASSERT(!(arg & OFFS_REG_MASK));
1565 if (compiler->cache_arg == arg) {
1566 tmp = argw - compiler->cache_argw;
1567 if (!(tmp & ~0x3fc))
1568 return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG3) | DD4(reg) | (tmp >> 2));
1569 if (!(-tmp & ~0x3fc))
1570 return push_inst32(compiler, inst | RN4(TMP_REG3) | DD4(reg) | (-tmp >> 2));
1571 if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, tmp) != SLJIT_ERR_UNSUPPORTED) {
1572 FAIL_IF(compiler->error);
1573 compiler->cache_argw = argw;
1574 return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG3) | DD4(reg));
1575 }
1576 }
1577
1578 if (arg & REG_MASK) {
1579 if (emit_set_delta(compiler, TMP_REG1, arg & REG_MASK, argw) != SLJIT_ERR_UNSUPPORTED) {
1580 FAIL_IF(compiler->error);
1581 return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG1) | DD4(reg));
1582 }
1583 imm = get_imm(argw & ~0x3fc);
1584 if (imm != INVALID_IMM) {
1585 FAIL_IF(push_inst32(compiler, ADD_WI | RD4(TMP_REG1) | RN4(arg & REG_MASK) | imm));
1586 return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG1) | DD4(reg) | ((argw & 0x3fc) >> 2));
1587 }
1588 imm = get_imm(-argw & ~0x3fc);
1589 if (imm != INVALID_IMM) {
1590 argw = -argw;
1591 FAIL_IF(push_inst32(compiler, SUB_WI | RD4(TMP_REG1) | RN4(arg & REG_MASK) | imm));
1592 return push_inst32(compiler, inst | RN4(TMP_REG1) | DD4(reg) | ((argw & 0x3fc) >> 2));
1593 }
1594 }
1595
1596 compiler->cache_arg = arg;
1597 compiler->cache_argw = argw;
1598
1599 FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1600 if (arg & REG_MASK)
1601 FAIL_IF(push_inst16(compiler, ADD | SET_REGS44(TMP_REG3, (arg & REG_MASK))));
1602 return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG3) | DD4(reg));
1603 }
1604
1605 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fop1(struct sljit_compiler *compiler, sljit_si op,
1606 sljit_si dst, sljit_sw dstw,
1607 sljit_si src, sljit_sw srcw)
1608 {
1609 sljit_si dst_r;
1610
1611 CHECK_ERROR();
1612 check_sljit_emit_fop1(compiler, op, dst, dstw, src, srcw);
1613 SLJIT_COMPILE_ASSERT((SLJIT_SINGLE_OP == 0x100), float_transfer_bit_error);
1614
1615 compiler->cache_arg = 0;
1616 compiler->cache_argw = 0;
1617 op ^= SLJIT_SINGLE_OP;
1618
1619 if (GET_OPCODE(op) == SLJIT_CMPD) {
1620 if (dst & SLJIT_MEM) {
1621 emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, TMP_FREG1, dst, dstw);
1622 dst = TMP_FREG1;
1623 }
1624 if (src & SLJIT_MEM) {
1625 emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, TMP_FREG2, src, srcw);
1626 src = TMP_FREG2;
1627 }
1628 FAIL_IF(push_inst32(compiler, VCMP_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst) | DM4(src)));
1629 return push_inst32(compiler, VMRS);
1630 }
1631
1632 dst_r = (dst <= REG_MASK) ? dst : TMP_FREG1;
1633 if (src & SLJIT_MEM) {
1634 emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, dst_r, src, srcw);
1635 src = dst_r;
1636 }
1637
1638 switch (GET_OPCODE(op)) {
1639 case SLJIT_MOVD:
1640 if (src != dst_r)
1641 FAIL_IF(push_inst32(compiler, VMOV_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst_r) | DM4(src)));
1642 break;
1643 case SLJIT_NEGD:
1644 FAIL_IF(push_inst32(compiler, VNEG_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst_r) | DM4(src)));
1645 break;
1646 case SLJIT_ABSD:
1647 FAIL_IF(push_inst32(compiler, VABS_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst_r) | DM4(src)));
1648 break;
1649 }
1650
1651 if (!(dst & SLJIT_MEM))
1652 return SLJIT_SUCCESS;
1653 return emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP), TMP_FREG1, dst, dstw);
1654 }
1655
1656 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fop2(struct sljit_compiler *compiler, sljit_si op,
1657 sljit_si dst, sljit_sw dstw,
1658 sljit_si src1, sljit_sw src1w,
1659 sljit_si src2, sljit_sw src2w)
1660 {
1661 sljit_si dst_r;
1662
1663 CHECK_ERROR();
1664 check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w);
1665
1666 compiler->cache_arg = 0;
1667 compiler->cache_argw = 0;
1668 op ^= SLJIT_SINGLE_OP;
1669
1670 dst_r = (dst <= REG_MASK) ? dst : TMP_FREG1;
1671 if (src1 & SLJIT_MEM) {
1672 emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, TMP_FREG1, src1, src1w);
1673 src1 = TMP_FREG1;
1674 }
1675 if (src2 & SLJIT_MEM) {
1676 emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, TMP_FREG2, src2, src2w);
1677 src2 = TMP_FREG2;
1678 }
1679
1680 switch (GET_OPCODE(op)) {
1681 case SLJIT_ADDD:
1682 FAIL_IF(push_inst32(compiler, VADD_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst_r) | DN4(src1) | DM4(src2)));
1683 break;
1684 case SLJIT_SUBD:
1685 FAIL_IF(push_inst32(compiler, VSUB_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst_r) | DN4(src1) | DM4(src2)));
1686 break;
1687 case SLJIT_MULD:
1688 FAIL_IF(push_inst32(compiler, VMUL_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst_r) | DN4(src1) | DM4(src2)));
1689 break;
1690 case SLJIT_DIVD:
1691 FAIL_IF(push_inst32(compiler, VDIV_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst_r) | DN4(src1) | DM4(src2)));
1692 break;
1693 }
1694
1695 if (!(dst & SLJIT_MEM))
1696 return SLJIT_SUCCESS;
1697 return emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP), TMP_FREG1, dst, dstw);
1698 }
1699
1700 #undef FPU_LOAD
1701
1702 /* --------------------------------------------------------------------- */
1703 /* Other instructions */
1704 /* --------------------------------------------------------------------- */
1705
1706 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_si dst, sljit_sw dstw)
1707 {
1708 CHECK_ERROR();
1709 check_sljit_emit_fast_enter(compiler, dst, dstw);
1710 ADJUST_LOCAL_OFFSET(dst, dstw);
1711
1712 /* For UNUSED dst. Uncommon, but possible. */
1713 if (dst == SLJIT_UNUSED)
1714 return SLJIT_SUCCESS;
1715
1716 if (dst <= REG_MASK)
1717 return push_inst16(compiler, MOV | SET_REGS44(dst, TMP_REG3));
1718
1719 /* Memory. */
1720 if (getput_arg_fast(compiler, WORD_SIZE | STORE, TMP_REG3, dst, dstw))
1721 return compiler->error;
1722 /* TMP_REG3 is used for caching. */
1723 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(TMP_REG2, TMP_REG3)));
1724 compiler->cache_arg = 0;
1725 compiler->cache_argw = 0;
1726 return getput_arg(compiler, WORD_SIZE | STORE, TMP_REG2, dst, dstw, 0, 0);
1727 }
1728
1729 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fast_return(struct sljit_compiler *compiler, sljit_si src, sljit_sw srcw)
1730 {
1731 CHECK_ERROR();
1732 check_sljit_emit_fast_return(compiler, src, srcw);
1733 ADJUST_LOCAL_OFFSET(src, srcw);
1734
1735 if (src <= REG_MASK)
1736 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(TMP_REG3, src)));
1737 else if (src & SLJIT_MEM) {
1738 if (getput_arg_fast(compiler, WORD_SIZE, TMP_REG3, src, srcw))
1739 FAIL_IF(compiler->error);
1740 else {
1741 compiler->cache_arg = 0;
1742 compiler->cache_argw = 0;
1743 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src, srcw, 0, 0));
1744 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(TMP_REG3, TMP_REG2)));
1745 }
1746 }
1747 else if (src & SLJIT_IMM)
1748 FAIL_IF(load_immediate(compiler, TMP_REG3, srcw));
1749 return push_inst16(compiler, BLX | RN3(TMP_REG3));
1750 }
1751
1752 /* --------------------------------------------------------------------- */
1753 /* Conditional instructions */
1754 /* --------------------------------------------------------------------- */
1755
1756 static sljit_uw get_cc(sljit_si type)
1757 {
1758 switch (type) {
1759 case SLJIT_C_EQUAL:
1760 case SLJIT_C_MUL_NOT_OVERFLOW:
1761 case SLJIT_C_FLOAT_EQUAL:
1762 return 0x0;
1763
1764 case SLJIT_C_NOT_EQUAL:
1765 case SLJIT_C_MUL_OVERFLOW:
1766 case SLJIT_C_FLOAT_NOT_EQUAL:
1767 return 0x1;
1768
1769 case SLJIT_C_LESS:
1770 case SLJIT_C_FLOAT_LESS:
1771 return 0x3;
1772
1773 case SLJIT_C_GREATER_EQUAL:
1774 case SLJIT_C_FLOAT_GREATER_EQUAL:
1775 return 0x2;
1776
1777 case SLJIT_C_GREATER:
1778 case SLJIT_C_FLOAT_GREATER:
1779 return 0x8;
1780
1781 case SLJIT_C_LESS_EQUAL:
1782 case SLJIT_C_FLOAT_LESS_EQUAL:
1783 return 0x9;
1784
1785 case SLJIT_C_SIG_LESS:
1786 return 0xb;
1787
1788 case SLJIT_C_SIG_GREATER_EQUAL:
1789 return 0xa;
1790
1791 case SLJIT_C_SIG_GREATER:
1792 return 0xc;
1793
1794 case SLJIT_C_SIG_LESS_EQUAL:
1795 return 0xd;
1796
1797 case SLJIT_C_OVERFLOW:
1798 case SLJIT_C_FLOAT_UNORDERED:
1799 return 0x6;
1800
1801 case SLJIT_C_NOT_OVERFLOW:
1802 case SLJIT_C_FLOAT_ORDERED:
1803 return 0x7;
1804
1805 default: /* SLJIT_JUMP */
1806 return 0xe;
1807 }
1808 }
1809
1810 SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler)
1811 {
1812 struct sljit_label *label;
1813
1814 CHECK_ERROR_PTR();
1815 check_sljit_emit_label(compiler);
1816
1817 if (compiler->last_label && compiler->last_label->size == compiler->size)
1818 return compiler->last_label;
1819
1820 label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label));
1821 PTR_FAIL_IF(!label);
1822 set_label(label, compiler);
1823 return label;
1824 }
1825
1826 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, sljit_si type)
1827 {
1828 struct sljit_jump *jump;
1829 sljit_ins cc;
1830
1831 CHECK_ERROR_PTR();
1832 check_sljit_emit_jump(compiler, type);
1833
1834 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1835 PTR_FAIL_IF(!jump);
1836 set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1837 type &= 0xff;
1838
1839 /* In ARM, we don't need to touch the arguments. */
1840 PTR_FAIL_IF(emit_imm32_const(compiler, TMP_REG1, 0));
1841 if (type < SLJIT_JUMP) {
1842 jump->flags |= IS_COND;
1843 cc = get_cc(type);
1844 jump->flags |= cc << 8;
1845 PTR_FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8));
1846 }
1847
1848 jump->addr = compiler->size;
1849 if (type <= SLJIT_JUMP)
1850 PTR_FAIL_IF(push_inst16(compiler, BX | RN3(TMP_REG1)));
1851 else {
1852 jump->flags |= IS_BL;
1853 PTR_FAIL_IF(push_inst16(compiler, BLX | RN3(TMP_REG1)));
1854 }
1855
1856 return jump;
1857 }
1858
1859 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_ijump(struct sljit_compiler *compiler, sljit_si type, sljit_si src, sljit_sw srcw)
1860 {
1861 struct sljit_jump *jump;
1862
1863 CHECK_ERROR();
1864 check_sljit_emit_ijump(compiler, type, src, srcw);
1865 ADJUST_LOCAL_OFFSET(src, srcw);
1866
1867 /* In ARM, we don't need to touch the arguments. */
1868 if (!(src & SLJIT_IMM)) {
1869 if (FAST_IS_REG(src))
1870 return push_inst16(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RN3(src));
1871
1872 FAIL_IF(emit_op_mem(compiler, WORD_SIZE, type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, src, srcw));
1873 if (type >= SLJIT_FAST_CALL)
1874 return push_inst16(compiler, BLX | RN3(TMP_REG1));
1875 }
1876
1877 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1878 FAIL_IF(!jump);
1879 set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_BL : 0));
1880 jump->u.target = srcw;
1881
1882 FAIL_IF(emit_imm32_const(compiler, TMP_REG1, 0));
1883 jump->addr = compiler->size;
1884 return push_inst16(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RN3(TMP_REG1));
1885 }
1886
1887 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op_flags(struct sljit_compiler *compiler, sljit_si op,
1888 sljit_si dst, sljit_sw dstw,
1889 sljit_si src, sljit_sw srcw,
1890 sljit_si type)
1891 {
1892 sljit_si dst_r, flags = GET_ALL_FLAGS(op);
1893 sljit_ins cc, ins;
1894
1895 CHECK_ERROR();
1896 check_sljit_emit_op_flags(compiler, op, dst, dstw, src, srcw, type);
1897 ADJUST_LOCAL_OFFSET(dst, dstw);
1898 ADJUST_LOCAL_OFFSET(src, srcw);
1899
1900 if (dst == SLJIT_UNUSED)
1901 return SLJIT_SUCCESS;
1902
1903 op = GET_OPCODE(op);
1904 cc = get_cc(type);
1905 dst_r = FAST_IS_REG(dst) ? dst : TMP_REG2;
1906
1907 if (op < SLJIT_ADD) {
1908 FAIL_IF(push_inst16(compiler, IT | (cc << 4) | (((cc & 0x1) ^ 0x1) << 3) | 0x4));
1909 if (reg_map[dst_r] > 7) {
1910 FAIL_IF(push_inst32(compiler, MOV_WI | RD4(dst_r) | 1));
1911 FAIL_IF(push_inst32(compiler, MOV_WI | RD4(dst_r) | 0));
1912 } else {
1913 FAIL_IF(push_inst16(compiler, MOVSI | RDN3(dst_r) | 1));
1914 FAIL_IF(push_inst16(compiler, MOVSI | RDN3(dst_r) | 0));
1915 }
1916 if (dst_r != TMP_REG2)
1917 return SLJIT_SUCCESS;
1918 return emit_op_mem(compiler, WORD_SIZE | STORE, TMP_REG2, dst, dstw);
1919 }
1920
1921 ins = (op == SLJIT_AND ? ANDI : (op == SLJIT_OR ? ORRI : EORI));
1922 if ((op == SLJIT_OR || op == SLJIT_XOR) && FAST_IS_REG(dst) && dst == src) {
1923 /* Does not change the other bits. */
1924 FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8));
1925 FAIL_IF(push_inst32(compiler, ins | RN4(src) | RD4(dst) | 1));
1926 if (flags & SLJIT_SET_E) {
1927 /* The condition must always be set, even if the ORRI/EORI is not executed above. */
1928 if (reg_map[dst] <= 7)
1929 return push_inst16(compiler, MOVS | RD3(TMP_REG1) | RN3(dst));
1930 return push_inst32(compiler, MOV_W | SET_FLAGS | RD4(TMP_REG1) | RM4(dst));
1931 }
1932 return SLJIT_SUCCESS;
1933 }
1934
1935 compiler->cache_arg = 0;
1936 compiler->cache_argw = 0;
1937 if (src & SLJIT_MEM) {
1938 FAIL_IF(emit_op_mem2(compiler, WORD_SIZE, TMP_REG2, src, srcw, dst, dstw));
1939 src = TMP_REG2;
1940 srcw = 0;
1941 } else if (src & SLJIT_IMM) {
1942 FAIL_IF(load_immediate(compiler, TMP_REG2, srcw));
1943 src = TMP_REG2;
1944 srcw = 0;
1945 }
1946
1947 if (op == SLJIT_AND || src != dst_r) {
1948 FAIL_IF(push_inst16(compiler, IT | (cc << 4) | (((cc & 0x1) ^ 0x1) << 3) | 0x4));
1949 FAIL_IF(push_inst32(compiler, ins | RN4(src) | RD4(dst_r) | 1));
1950 FAIL_IF(push_inst32(compiler, ins | RN4(src) | RD4(dst_r) | 0));
1951 }
1952 else {
1953 FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8));
1954 FAIL_IF(push_inst32(compiler, ins | RN4(src) | RD4(dst_r) | 1));
1955 }
1956
1957 if (dst_r == TMP_REG2)
1958 FAIL_IF(emit_op_mem2(compiler, WORD_SIZE | STORE, TMP_REG2, dst, dstw, 0, 0));
1959
1960 if (flags & SLJIT_SET_E) {
1961 /* The condition must always be set, even if the ORR/EORI is not executed above. */
1962 if (reg_map[dst_r] <= 7)
1963 return push_inst16(compiler, MOVS | RD3(TMP_REG1) | RN3(dst_r));
1964 return push_inst32(compiler, MOV_W | SET_FLAGS | RD4(TMP_REG1) | RM4(dst_r));
1965 }
1966 return SLJIT_SUCCESS;
1967 }
1968
1969 SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, sljit_si dst, sljit_sw dstw, sljit_sw init_value)
1970 {
1971 struct sljit_const *const_;
1972 sljit_si dst_r;
1973
1974 CHECK_ERROR_PTR();
1975 check_sljit_emit_const(compiler, dst, dstw, init_value);
1976 ADJUST_LOCAL_OFFSET(dst, dstw);
1977
1978 const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const));
1979 PTR_FAIL_IF(!const_);
1980 set_const(const_, compiler);
1981
1982 dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG1;
1983 PTR_FAIL_IF(emit_imm32_const(compiler, dst_r, init_value));
1984
1985 if (dst & SLJIT_MEM)
1986 PTR_FAIL_IF(emit_op_mem(compiler, WORD_SIZE | STORE, dst_r, dst, dstw));
1987 return const_;
1988 }
1989
1990 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr)
1991 {
1992 sljit_uh *inst = (sljit_uh*)addr;
1993 modify_imm32_const(inst, new_addr);
1994 SLJIT_CACHE_FLUSH(inst, inst + 3);
1995 }
1996
1997 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant)
1998 {
1999 sljit_uh *inst = (sljit_uh*)addr;
2000 modify_imm32_const(inst, new_constant);
2001 SLJIT_CACHE_FLUSH(inst, inst + 3);
2002 }

  ViewVC Help
Powered by ViewVC 1.1.5