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
sljit_get_platform_name(void)27 SLJIT_API_FUNC_ATTRIBUTE const char* sljit_get_platform_name(void)
28 {
29 #ifdef __SOFTFP__
30 return "ARM-Thumb2" SLJIT_CPUINFO " ABI:softfp";
31 #else
32 return "ARM-Thumb2" SLJIT_CPUINFO " ABI:hardfp";
33 #endif
34 }
35
36 /* Length of an instruction word. */
37 typedef sljit_u32 sljit_ins;
38
39 /* Last register + 1. */
40 #define TMP_REG1 (SLJIT_NUMBER_OF_REGISTERS + 2)
41 #define TMP_REG2 (SLJIT_NUMBER_OF_REGISTERS + 3)
42 #define TMP_PC (SLJIT_NUMBER_OF_REGISTERS + 4)
43
44 #define TMP_FREG1 (SLJIT_NUMBER_OF_FLOAT_REGISTERS + 1)
45 #define TMP_FREG2 (SLJIT_NUMBER_OF_FLOAT_REGISTERS + 2)
46
47 /* See sljit_emit_enter and sljit_emit_op0 if you want to change them. */
48 static const sljit_u8 reg_map[SLJIT_NUMBER_OF_REGISTERS + 5] = {
49 0, 0, 1, 2, 3, 11, 10, 9, 8, 7, 6, 5, 4, 13, 12, 14, 15
50 };
51
52 static const sljit_u8 freg_map[SLJIT_NUMBER_OF_FLOAT_REGISTERS + 3] = {
53 0, 0, 1, 2, 3, 4, 5, 6, 7
54 };
55
56 #define COPY_BITS(src, from, to, bits) \
57 ((from >= to ? (src >> (from - to)) : (src << (to - from))) & (((1 << bits) - 1) << to))
58
59 /* Thumb16 encodings. */
60 #define RD3(rd) (reg_map[rd])
61 #define RN3(rn) (reg_map[rn] << 3)
62 #define RM3(rm) (reg_map[rm] << 6)
63 #define RDN3(rdn) (reg_map[rdn] << 8)
64 #define IMM3(imm) (imm << 6)
65 #define IMM8(imm) (imm)
66
67 /* Thumb16 helpers. */
68 #define SET_REGS44(rd, rn) \
69 ((reg_map[rn] << 3) | (reg_map[rd] & 0x7) | ((reg_map[rd] & 0x8) << 4))
70 #define IS_2_LO_REGS(reg1, reg2) \
71 (reg_map[reg1] <= 7 && reg_map[reg2] <= 7)
72 #define IS_3_LO_REGS(reg1, reg2, reg3) \
73 (reg_map[reg1] <= 7 && reg_map[reg2] <= 7 && reg_map[reg3] <= 7)
74
75 /* Thumb32 encodings. */
76 #define RD4(rd) (reg_map[rd] << 8)
77 #define RN4(rn) (reg_map[rn] << 16)
78 #define RM4(rm) (reg_map[rm])
79 #define RT4(rt) (reg_map[rt] << 12)
80 #define DD4(dd) (freg_map[dd] << 12)
81 #define DN4(dn) (freg_map[dn] << 16)
82 #define DM4(dm) (freg_map[dm])
83 #define IMM5(imm) \
84 (COPY_BITS(imm, 2, 12, 3) | ((imm & 0x3) << 6))
85 #define IMM12(imm) \
86 (COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff))
87
88 /* --------------------------------------------------------------------- */
89 /* Instrucion forms */
90 /* --------------------------------------------------------------------- */
91
92 /* dot '.' changed to _
93 I immediate form (possibly followed by number of immediate bits). */
94 #define ADCI 0xf1400000
95 #define ADCS 0x4140
96 #define ADC_W 0xeb400000
97 #define ADD 0x4400
98 #define ADDS 0x1800
99 #define ADDSI3 0x1c00
100 #define ADDSI8 0x3000
101 #define ADD_W 0xeb000000
102 #define ADDWI 0xf2000000
103 #define ADD_SP 0xb000
104 #define ADD_W 0xeb000000
105 #define ADD_WI 0xf1000000
106 #define ANDI 0xf0000000
107 #define ANDS 0x4000
108 #define AND_W 0xea000000
109 #define ASRS 0x4100
110 #define ASRSI 0x1000
111 #define ASR_W 0xfa40f000
112 #define ASR_WI 0xea4f0020
113 #define BCC 0xd000
114 #define BICI 0xf0200000
115 #define BKPT 0xbe00
116 #define BLX 0x4780
117 #define BX 0x4700
118 #define CLZ 0xfab0f080
119 #define CMNI_W 0xf1100f00
120 #define CMP 0x4280
121 #define CMPI 0x2800
122 #define CMPI_W 0xf1b00f00
123 #define CMP_X 0x4500
124 #define CMP_W 0xebb00f00
125 #define EORI 0xf0800000
126 #define EORS 0x4040
127 #define EOR_W 0xea800000
128 #define IT 0xbf00
129 #define LDRI 0xf8500800
130 #define LSLS 0x4080
131 #define LSLSI 0x0000
132 #define LSL_W 0xfa00f000
133 #define LSL_WI 0xea4f0000
134 #define LSRS 0x40c0
135 #define LSRSI 0x0800
136 #define LSR_W 0xfa20f000
137 #define LSR_WI 0xea4f0010
138 #define MOV 0x4600
139 #define MOVS 0x0000
140 #define MOVSI 0x2000
141 #define MOVT 0xf2c00000
142 #define MOVW 0xf2400000
143 #define MOV_W 0xea4f0000
144 #define MOV_WI 0xf04f0000
145 #define MUL 0xfb00f000
146 #define MVNS 0x43c0
147 #define MVN_W 0xea6f0000
148 #define MVN_WI 0xf06f0000
149 #define NOP 0xbf00
150 #define ORNI 0xf0600000
151 #define ORRI 0xf0400000
152 #define ORRS 0x4300
153 #define ORR_W 0xea400000
154 #define POP 0xbc00
155 #define POP_W 0xe8bd0000
156 #define PUSH 0xb400
157 #define PUSH_W 0xe92d0000
158 #define RSB_WI 0xf1c00000
159 #define RSBSI 0x4240
160 #define SBCI 0xf1600000
161 #define SBCS 0x4180
162 #define SBC_W 0xeb600000
163 #define SDIV 0xfb90f0f0
164 #define SMULL 0xfb800000
165 #define STR_SP 0x9000
166 #define SUBS 0x1a00
167 #define SUBSI3 0x1e00
168 #define SUBSI8 0x3800
169 #define SUB_W 0xeba00000
170 #define SUBWI 0xf2a00000
171 #define SUB_SP 0xb080
172 #define SUB_WI 0xf1a00000
173 #define SXTB 0xb240
174 #define SXTB_W 0xfa4ff080
175 #define SXTH 0xb200
176 #define SXTH_W 0xfa0ff080
177 #define TST 0x4200
178 #define UDIV 0xfbb0f0f0
179 #define UMULL 0xfba00000
180 #define UXTB 0xb2c0
181 #define UXTB_W 0xfa5ff080
182 #define UXTH 0xb280
183 #define UXTH_W 0xfa1ff080
184 #define VABS_F32 0xeeb00ac0
185 #define VADD_F32 0xee300a00
186 #define VCMP_F32 0xeeb40a40
187 #define VCVT_F32_S32 0xeeb80ac0
188 #define VCVT_F64_F32 0xeeb70ac0
189 #define VCVT_S32_F32 0xeebd0ac0
190 #define VDIV_F32 0xee800a00
191 #define VMOV_F32 0xeeb00a40
192 #define VMOV 0xee000a10
193 #define VMOV2 0xec400a10
194 #define VMRS 0xeef1fa10
195 #define VMUL_F32 0xee200a00
196 #define VNEG_F32 0xeeb10a40
197 #define VSTR_F32 0xed000a00
198 #define VSUB_F32 0xee300a40
199
push_inst16(struct sljit_compiler * compiler,sljit_ins inst)200 static sljit_s32 push_inst16(struct sljit_compiler *compiler, sljit_ins inst)
201 {
202 sljit_u16 *ptr;
203 SLJIT_ASSERT(!(inst & 0xffff0000));
204
205 ptr = (sljit_u16*)ensure_buf(compiler, sizeof(sljit_u16));
206 FAIL_IF(!ptr);
207 *ptr = inst;
208 compiler->size++;
209 return SLJIT_SUCCESS;
210 }
211
push_inst32(struct sljit_compiler * compiler,sljit_ins inst)212 static sljit_s32 push_inst32(struct sljit_compiler *compiler, sljit_ins inst)
213 {
214 sljit_u16 *ptr = (sljit_u16*)ensure_buf(compiler, sizeof(sljit_ins));
215 FAIL_IF(!ptr);
216 *ptr++ = inst >> 16;
217 *ptr = inst;
218 compiler->size += 2;
219 return SLJIT_SUCCESS;
220 }
221
emit_imm32_const(struct sljit_compiler * compiler,sljit_s32 dst,sljit_uw imm)222 static SLJIT_INLINE sljit_s32 emit_imm32_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_uw imm)
223 {
224 FAIL_IF(push_inst32(compiler, MOVW | RD4(dst)
225 | COPY_BITS(imm, 12, 16, 4) | COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff)));
226 return push_inst32(compiler, MOVT | RD4(dst)
227 | COPY_BITS(imm, 12 + 16, 16, 4) | COPY_BITS(imm, 11 + 16, 26, 1) | COPY_BITS(imm, 8 + 16, 12, 3) | ((imm & 0xff0000) >> 16));
228 }
229
modify_imm32_const(sljit_u16 * inst,sljit_uw new_imm)230 static SLJIT_INLINE void modify_imm32_const(sljit_u16 *inst, sljit_uw new_imm)
231 {
232 sljit_s32 dst = inst[1] & 0x0f00;
233 SLJIT_ASSERT(((inst[0] & 0xfbf0) == (MOVW >> 16)) && ((inst[2] & 0xfbf0) == (MOVT >> 16)) && dst == (inst[3] & 0x0f00));
234 inst[0] = (MOVW >> 16) | COPY_BITS(new_imm, 12, 0, 4) | COPY_BITS(new_imm, 11, 10, 1);
235 inst[1] = dst | COPY_BITS(new_imm, 8, 12, 3) | (new_imm & 0xff);
236 inst[2] = (MOVT >> 16) | COPY_BITS(new_imm, 12 + 16, 0, 4) | COPY_BITS(new_imm, 11 + 16, 10, 1);
237 inst[3] = dst | COPY_BITS(new_imm, 8 + 16, 12, 3) | ((new_imm & 0xff0000) >> 16);
238 }
239
detect_jump_type(struct sljit_jump * jump,sljit_u16 * code_ptr,sljit_u16 * code,sljit_sw executable_offset)240 static SLJIT_INLINE sljit_s32 detect_jump_type(struct sljit_jump *jump, sljit_u16 *code_ptr, sljit_u16 *code, sljit_sw executable_offset)
241 {
242 sljit_sw diff;
243
244 if (jump->flags & SLJIT_REWRITABLE_JUMP)
245 return 0;
246
247 if (jump->flags & JUMP_ADDR) {
248 /* Branch to ARM code is not optimized yet. */
249 if (!(jump->u.target & 0x1))
250 return 0;
251 diff = ((sljit_sw)jump->u.target - (sljit_sw)(code_ptr + 2) - executable_offset) >> 1;
252 }
253 else {
254 SLJIT_ASSERT(jump->flags & JUMP_LABEL);
255 diff = ((sljit_sw)(code + jump->u.label->size) - (sljit_sw)(code_ptr + 2)) >> 1;
256 }
257
258 if (jump->flags & IS_COND) {
259 SLJIT_ASSERT(!(jump->flags & IS_BL));
260 if (diff <= 127 && diff >= -128) {
261 jump->flags |= PATCH_TYPE1;
262 return 5;
263 }
264 if (diff <= 524287 && diff >= -524288) {
265 jump->flags |= PATCH_TYPE2;
266 return 4;
267 }
268 /* +1 comes from the prefix IT instruction. */
269 diff--;
270 if (diff <= 8388607 && diff >= -8388608) {
271 jump->flags |= PATCH_TYPE3;
272 return 3;
273 }
274 }
275 else if (jump->flags & IS_BL) {
276 if (diff <= 8388607 && diff >= -8388608) {
277 jump->flags |= PATCH_BL;
278 return 3;
279 }
280 }
281 else {
282 if (diff <= 1023 && diff >= -1024) {
283 jump->flags |= PATCH_TYPE4;
284 return 4;
285 }
286 if (diff <= 8388607 && diff >= -8388608) {
287 jump->flags |= PATCH_TYPE5;
288 return 3;
289 }
290 }
291
292 return 0;
293 }
294
set_jump_instruction(struct sljit_jump * jump,sljit_sw executable_offset)295 static SLJIT_INLINE void set_jump_instruction(struct sljit_jump *jump, sljit_sw executable_offset)
296 {
297 sljit_s32 type = (jump->flags >> 4) & 0xf;
298 sljit_sw diff;
299 sljit_u16 *jump_inst;
300 sljit_s32 s, j1, j2;
301
302 if (SLJIT_UNLIKELY(type == 0)) {
303 modify_imm32_const((sljit_u16*)jump->addr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target);
304 return;
305 }
306
307 if (jump->flags & JUMP_ADDR) {
308 SLJIT_ASSERT(jump->u.target & 0x1);
309 diff = ((sljit_sw)jump->u.target - (sljit_sw)(jump->addr + sizeof(sljit_u32)) - executable_offset) >> 1;
310 }
311 else {
312 SLJIT_ASSERT(jump->u.label->addr & 0x1);
313 diff = ((sljit_sw)(jump->u.label->addr) - (sljit_sw)(jump->addr + sizeof(sljit_u32)) - executable_offset) >> 1;
314 }
315 jump_inst = (sljit_u16*)jump->addr;
316
317 switch (type) {
318 case 1:
319 /* Encoding T1 of 'B' instruction */
320 SLJIT_ASSERT(diff <= 127 && diff >= -128 && (jump->flags & IS_COND));
321 jump_inst[0] = 0xd000 | (jump->flags & 0xf00) | (diff & 0xff);
322 return;
323 case 2:
324 /* Encoding T3 of 'B' instruction */
325 SLJIT_ASSERT(diff <= 524287 && diff >= -524288 && (jump->flags & IS_COND));
326 jump_inst[0] = 0xf000 | COPY_BITS(jump->flags, 8, 6, 4) | COPY_BITS(diff, 11, 0, 6) | COPY_BITS(diff, 19, 10, 1);
327 jump_inst[1] = 0x8000 | COPY_BITS(diff, 17, 13, 1) | COPY_BITS(diff, 18, 11, 1) | (diff & 0x7ff);
328 return;
329 case 3:
330 SLJIT_ASSERT(jump->flags & IS_COND);
331 *jump_inst++ = IT | ((jump->flags >> 4) & 0xf0) | 0x8;
332 diff--;
333 type = 5;
334 break;
335 case 4:
336 /* Encoding T2 of 'B' instruction */
337 SLJIT_ASSERT(diff <= 1023 && diff >= -1024 && !(jump->flags & IS_COND));
338 jump_inst[0] = 0xe000 | (diff & 0x7ff);
339 return;
340 }
341
342 SLJIT_ASSERT(diff <= 8388607 && diff >= -8388608);
343
344 /* Really complex instruction form for branches. */
345 s = (diff >> 23) & 0x1;
346 j1 = (~(diff >> 22) ^ s) & 0x1;
347 j2 = (~(diff >> 21) ^ s) & 0x1;
348 jump_inst[0] = 0xf000 | (s << 10) | COPY_BITS(diff, 11, 0, 10);
349 jump_inst[1] = (j1 << 13) | (j2 << 11) | (diff & 0x7ff);
350
351 /* The others have a common form. */
352 if (type == 5) /* Encoding T4 of 'B' instruction */
353 jump_inst[1] |= 0x9000;
354 else if (type == 6) /* Encoding T1 of 'BL' instruction */
355 jump_inst[1] |= 0xd000;
356 else
357 SLJIT_UNREACHABLE();
358 }
359
sljit_generate_code(struct sljit_compiler * compiler)360 SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler)
361 {
362 struct sljit_memory_fragment *buf;
363 sljit_u16 *code;
364 sljit_u16 *code_ptr;
365 sljit_u16 *buf_ptr;
366 sljit_u16 *buf_end;
367 sljit_uw half_count;
368 sljit_uw next_addr;
369 sljit_sw executable_offset;
370
371 struct sljit_label *label;
372 struct sljit_jump *jump;
373 struct sljit_const *const_;
374 struct sljit_put_label *put_label;
375
376 CHECK_ERROR_PTR();
377 CHECK_PTR(check_sljit_generate_code(compiler));
378 reverse_buf(compiler);
379
380 code = (sljit_u16*)SLJIT_MALLOC_EXEC(compiler->size * sizeof(sljit_u16), compiler->exec_allocator_data);
381 PTR_FAIL_WITH_EXEC_IF(code);
382 buf = compiler->buf;
383
384 code_ptr = code;
385 half_count = 0;
386 next_addr = 0;
387 executable_offset = SLJIT_EXEC_OFFSET(code);
388
389 label = compiler->labels;
390 jump = compiler->jumps;
391 const_ = compiler->consts;
392 put_label = compiler->put_labels;
393
394 do {
395 buf_ptr = (sljit_u16*)buf->memory;
396 buf_end = buf_ptr + (buf->used_size >> 1);
397 do {
398 *code_ptr = *buf_ptr++;
399 if (next_addr == half_count) {
400 SLJIT_ASSERT(!label || label->size >= half_count);
401 SLJIT_ASSERT(!jump || jump->addr >= half_count);
402 SLJIT_ASSERT(!const_ || const_->addr >= half_count);
403 SLJIT_ASSERT(!put_label || put_label->addr >= half_count);
404
405 /* These structures are ordered by their address. */
406 if (label && label->size == half_count) {
407 label->addr = ((sljit_uw)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset)) | 0x1;
408 label->size = code_ptr - code;
409 label = label->next;
410 }
411 if (jump && jump->addr == half_count) {
412 jump->addr = (sljit_uw)code_ptr - ((jump->flags & IS_COND) ? 10 : 8);
413 code_ptr -= detect_jump_type(jump, code_ptr, code, executable_offset);
414 jump = jump->next;
415 }
416 if (const_ && const_->addr == half_count) {
417 const_->addr = (sljit_uw)code_ptr;
418 const_ = const_->next;
419 }
420 if (put_label && put_label->addr == half_count) {
421 SLJIT_ASSERT(put_label->label);
422 put_label->addr = (sljit_uw)code_ptr;
423 put_label = put_label->next;
424 }
425 next_addr = compute_next_addr(label, jump, const_, put_label);
426 }
427 code_ptr ++;
428 half_count ++;
429 } while (buf_ptr < buf_end);
430
431 buf = buf->next;
432 } while (buf);
433
434 if (label && label->size == half_count) {
435 label->addr = ((sljit_uw)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset)) | 0x1;
436 label->size = code_ptr - code;
437 label = label->next;
438 }
439
440 SLJIT_ASSERT(!label);
441 SLJIT_ASSERT(!jump);
442 SLJIT_ASSERT(!const_);
443 SLJIT_ASSERT(!put_label);
444 SLJIT_ASSERT(code_ptr - code <= (sljit_sw)compiler->size);
445
446 jump = compiler->jumps;
447 while (jump) {
448 set_jump_instruction(jump, executable_offset);
449 jump = jump->next;
450 }
451
452 put_label = compiler->put_labels;
453 while (put_label) {
454 modify_imm32_const((sljit_u16 *)put_label->addr, put_label->label->addr);
455 put_label = put_label->next;
456 }
457
458 compiler->error = SLJIT_ERR_COMPILED;
459 compiler->executable_offset = executable_offset;
460 compiler->executable_size = (code_ptr - code) * sizeof(sljit_u16);
461
462 code = (sljit_u16 *)SLJIT_ADD_EXEC_OFFSET(code, executable_offset);
463 code_ptr = (sljit_u16 *)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset);
464
465 SLJIT_CACHE_FLUSH(code, code_ptr);
466 SLJIT_UPDATE_WX_FLAGS(code, code_ptr, 1);
467
468 /* Set thumb mode flag. */
469 return (void*)((sljit_uw)code | 0x1);
470 }
471
sljit_has_cpu_feature(sljit_s32 feature_type)472 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_has_cpu_feature(sljit_s32 feature_type)
473 {
474 switch (feature_type) {
475 case SLJIT_HAS_FPU:
476 #ifdef SLJIT_IS_FPU_AVAILABLE
477 return SLJIT_IS_FPU_AVAILABLE;
478 #else
479 /* Available by default. */
480 return 1;
481 #endif
482
483 case SLJIT_HAS_CLZ:
484 case SLJIT_HAS_CMOV:
485 case SLJIT_HAS_PREFETCH:
486 return 1;
487
488 default:
489 return 0;
490 }
491 }
492
493 /* --------------------------------------------------------------------- */
494 /* Core code generator functions. */
495 /* --------------------------------------------------------------------- */
496
497 #define INVALID_IMM 0x80000000
get_imm(sljit_uw imm)498 static sljit_uw get_imm(sljit_uw imm)
499 {
500 /* Thumb immediate form. */
501 sljit_s32 counter;
502
503 if (imm <= 0xff)
504 return imm;
505
506 if ((imm & 0xffff) == (imm >> 16)) {
507 /* Some special cases. */
508 if (!(imm & 0xff00))
509 return (1 << 12) | (imm & 0xff);
510 if (!(imm & 0xff))
511 return (2 << 12) | ((imm >> 8) & 0xff);
512 if ((imm & 0xff00) == ((imm & 0xff) << 8))
513 return (3 << 12) | (imm & 0xff);
514 }
515
516 /* Assembly optimization: count leading zeroes? */
517 counter = 8;
518 if (!(imm & 0xffff0000)) {
519 counter += 16;
520 imm <<= 16;
521 }
522 if (!(imm & 0xff000000)) {
523 counter += 8;
524 imm <<= 8;
525 }
526 if (!(imm & 0xf0000000)) {
527 counter += 4;
528 imm <<= 4;
529 }
530 if (!(imm & 0xc0000000)) {
531 counter += 2;
532 imm <<= 2;
533 }
534 if (!(imm & 0x80000000)) {
535 counter += 1;
536 imm <<= 1;
537 }
538 /* Since imm >= 128, this must be true. */
539 SLJIT_ASSERT(counter <= 31);
540
541 if (imm & 0x00ffffff)
542 return INVALID_IMM; /* Cannot be encoded. */
543
544 return ((imm >> 24) & 0x7f) | COPY_BITS(counter, 4, 26, 1) | COPY_BITS(counter, 1, 12, 3) | COPY_BITS(counter, 0, 7, 1);
545 }
546
load_immediate(struct sljit_compiler * compiler,sljit_s32 dst,sljit_uw imm)547 static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 dst, sljit_uw imm)
548 {
549 sljit_uw tmp;
550
551 /* MOVS cannot be used since it destroy flags. */
552
553 if (imm >= 0x10000) {
554 tmp = get_imm(imm);
555 if (tmp != INVALID_IMM)
556 return push_inst32(compiler, MOV_WI | RD4(dst) | tmp);
557 tmp = get_imm(~imm);
558 if (tmp != INVALID_IMM)
559 return push_inst32(compiler, MVN_WI | RD4(dst) | tmp);
560 }
561
562 /* set low 16 bits, set hi 16 bits to 0. */
563 FAIL_IF(push_inst32(compiler, MOVW | RD4(dst)
564 | COPY_BITS(imm, 12, 16, 4) | COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff)));
565
566 /* set hi 16 bit if needed. */
567 if (imm >= 0x10000)
568 return push_inst32(compiler, MOVT | RD4(dst)
569 | COPY_BITS(imm, 12 + 16, 16, 4) | COPY_BITS(imm, 11 + 16, 26, 1) | COPY_BITS(imm, 8 + 16, 12, 3) | ((imm & 0xff0000) >> 16));
570 return SLJIT_SUCCESS;
571 }
572
573 #define ARG1_IMM 0x0010000
574 #define ARG2_IMM 0x0020000
575 /* SET_FLAGS must be 0x100000 as it is also the value of S bit (can be used for optimization). */
576 #define SET_FLAGS 0x0100000
577 #define UNUSED_RETURN 0x0200000
578
emit_op_imm(struct sljit_compiler * compiler,sljit_s32 flags,sljit_s32 dst,sljit_uw arg1,sljit_uw arg2)579 static sljit_s32 emit_op_imm(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 dst, sljit_uw arg1, sljit_uw arg2)
580 {
581 /* dst must be register, TMP_REG1
582 arg1 must be register, imm
583 arg2 must be register, imm */
584 sljit_s32 reg;
585 sljit_uw imm, nimm;
586
587 if (SLJIT_UNLIKELY((flags & (ARG1_IMM | ARG2_IMM)) == (ARG1_IMM | ARG2_IMM))) {
588 /* Both are immediates, no temporaries are used. */
589 flags &= ~ARG1_IMM;
590 FAIL_IF(load_immediate(compiler, TMP_REG1, arg1));
591 arg1 = TMP_REG1;
592 }
593
594 if (flags & (ARG1_IMM | ARG2_IMM)) {
595 reg = (flags & ARG2_IMM) ? arg1 : arg2;
596 imm = (flags & ARG2_IMM) ? arg2 : arg1;
597
598 switch (flags & 0xffff) {
599 case SLJIT_CLZ:
600 case SLJIT_MUL:
601 /* No form with immediate operand. */
602 break;
603 case SLJIT_MOV:
604 SLJIT_ASSERT(!(flags & SET_FLAGS) && (flags & ARG2_IMM) && arg1 == TMP_REG2);
605 return load_immediate(compiler, dst, imm);
606 case SLJIT_NOT:
607 if (!(flags & SET_FLAGS))
608 return load_immediate(compiler, dst, ~imm);
609 /* Since the flags should be set, we just fallback to the register mode.
610 Although some clever things could be done here, "NOT IMM" does not worth the efforts. */
611 break;
612 case SLJIT_ADD:
613 nimm = -(sljit_sw)imm;
614 if (IS_2_LO_REGS(reg, dst)) {
615 if (imm <= 0x7)
616 return push_inst16(compiler, ADDSI3 | IMM3(imm) | RD3(dst) | RN3(reg));
617 if (nimm <= 0x7)
618 return push_inst16(compiler, SUBSI3 | IMM3(nimm) | RD3(dst) | RN3(reg));
619 if (reg == dst) {
620 if (imm <= 0xff)
621 return push_inst16(compiler, ADDSI8 | IMM8(imm) | RDN3(dst));
622 if (nimm <= 0xff)
623 return push_inst16(compiler, SUBSI8 | IMM8(nimm) | RDN3(dst));
624 }
625 }
626 if (!(flags & SET_FLAGS)) {
627 if (imm <= 0xfff)
628 return push_inst32(compiler, ADDWI | RD4(dst) | RN4(reg) | IMM12(imm));
629 if (nimm <= 0xfff)
630 return push_inst32(compiler, SUBWI | RD4(dst) | RN4(reg) | IMM12(nimm));
631 }
632 nimm = get_imm(imm);
633 if (nimm != INVALID_IMM)
634 return push_inst32(compiler, ADD_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm);
635 nimm = get_imm(-(sljit_sw)imm);
636 if (nimm != INVALID_IMM)
637 return push_inst32(compiler, SUB_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm);
638 break;
639 case SLJIT_ADDC:
640 imm = get_imm(imm);
641 if (imm != INVALID_IMM)
642 return push_inst32(compiler, ADCI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
643 break;
644 case SLJIT_SUB:
645 /* SUB operation can be replaced by ADD because of the negative carry flag. */
646 if (flags & ARG1_IMM) {
647 if (imm == 0 && IS_2_LO_REGS(reg, dst))
648 return push_inst16(compiler, RSBSI | RD3(dst) | RN3(reg));
649 imm = get_imm(imm);
650 if (imm != INVALID_IMM)
651 return push_inst32(compiler, RSB_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
652 break;
653 }
654 if (flags & UNUSED_RETURN) {
655 if (imm <= 0xff && reg_map[reg] <= 7)
656 return push_inst16(compiler, CMPI | IMM8(imm) | RDN3(reg));
657 nimm = get_imm(imm);
658 if (nimm != INVALID_IMM)
659 return push_inst32(compiler, CMPI_W | RN4(reg) | nimm);
660 nimm = get_imm(-(sljit_sw)imm);
661 if (nimm != INVALID_IMM)
662 return push_inst32(compiler, CMNI_W | RN4(reg) | nimm);
663 }
664 nimm = -(sljit_sw)imm;
665 if (IS_2_LO_REGS(reg, dst)) {
666 if (imm <= 0x7)
667 return push_inst16(compiler, SUBSI3 | IMM3(imm) | RD3(dst) | RN3(reg));
668 if (nimm <= 0x7)
669 return push_inst16(compiler, ADDSI3 | IMM3(nimm) | RD3(dst) | RN3(reg));
670 if (reg == dst) {
671 if (imm <= 0xff)
672 return push_inst16(compiler, SUBSI8 | IMM8(imm) | RDN3(dst));
673 if (nimm <= 0xff)
674 return push_inst16(compiler, ADDSI8 | IMM8(nimm) | RDN3(dst));
675 }
676 }
677 if (!(flags & SET_FLAGS)) {
678 if (imm <= 0xfff)
679 return push_inst32(compiler, SUBWI | RD4(dst) | RN4(reg) | IMM12(imm));
680 if (nimm <= 0xfff)
681 return push_inst32(compiler, ADDWI | RD4(dst) | RN4(reg) | IMM12(nimm));
682 }
683 nimm = get_imm(imm);
684 if (nimm != INVALID_IMM)
685 return push_inst32(compiler, SUB_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm);
686 nimm = get_imm(-(sljit_sw)imm);
687 if (nimm != INVALID_IMM)
688 return push_inst32(compiler, ADD_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm);
689 break;
690 case SLJIT_SUBC:
691 if (flags & ARG1_IMM)
692 break;
693 imm = get_imm(imm);
694 if (imm != INVALID_IMM)
695 return push_inst32(compiler, SBCI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
696 break;
697 case SLJIT_AND:
698 nimm = get_imm(imm);
699 if (nimm != INVALID_IMM)
700 return push_inst32(compiler, ANDI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm);
701 imm = get_imm(imm);
702 if (imm != INVALID_IMM)
703 return push_inst32(compiler, BICI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
704 break;
705 case SLJIT_OR:
706 nimm = get_imm(imm);
707 if (nimm != INVALID_IMM)
708 return push_inst32(compiler, ORRI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm);
709 imm = get_imm(imm);
710 if (imm != INVALID_IMM)
711 return push_inst32(compiler, ORNI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
712 break;
713 case SLJIT_XOR:
714 imm = get_imm(imm);
715 if (imm != INVALID_IMM)
716 return push_inst32(compiler, EORI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
717 break;
718 case SLJIT_SHL:
719 case SLJIT_LSHR:
720 case SLJIT_ASHR:
721 if (flags & ARG1_IMM)
722 break;
723 imm &= 0x1f;
724 if (imm == 0) {
725 if (!(flags & SET_FLAGS))
726 return push_inst16(compiler, MOV | SET_REGS44(dst, reg));
727 if (IS_2_LO_REGS(dst, reg))
728 return push_inst16(compiler, MOVS | RD3(dst) | RN3(reg));
729 return push_inst32(compiler, MOV_W | SET_FLAGS | RD4(dst) | RM4(reg));
730 }
731 switch (flags & 0xffff) {
732 case SLJIT_SHL:
733 if (IS_2_LO_REGS(dst, reg))
734 return push_inst16(compiler, LSLSI | RD3(dst) | RN3(reg) | (imm << 6));
735 return push_inst32(compiler, LSL_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm));
736 case SLJIT_LSHR:
737 if (IS_2_LO_REGS(dst, reg))
738 return push_inst16(compiler, LSRSI | RD3(dst) | RN3(reg) | (imm << 6));
739 return push_inst32(compiler, LSR_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm));
740 default: /* SLJIT_ASHR */
741 if (IS_2_LO_REGS(dst, reg))
742 return push_inst16(compiler, ASRSI | RD3(dst) | RN3(reg) | (imm << 6));
743 return push_inst32(compiler, ASR_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm));
744 }
745 default:
746 SLJIT_UNREACHABLE();
747 break;
748 }
749
750 if (flags & ARG2_IMM) {
751 imm = arg2;
752 arg2 = (arg1 == TMP_REG1) ? TMP_REG2 : TMP_REG1;
753 FAIL_IF(load_immediate(compiler, arg2, imm));
754 }
755 else {
756 imm = arg1;
757 arg1 = (arg2 == TMP_REG1) ? TMP_REG2 : TMP_REG1;
758 FAIL_IF(load_immediate(compiler, arg1, imm));
759 }
760
761 SLJIT_ASSERT(arg1 != arg2);
762 }
763
764 /* Both arguments are registers. */
765 switch (flags & 0xffff) {
766 case SLJIT_MOV:
767 case SLJIT_MOV_U32:
768 case SLJIT_MOV_S32:
769 case SLJIT_MOV_P:
770 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG2);
771 if (dst == arg2)
772 return SLJIT_SUCCESS;
773 return push_inst16(compiler, MOV | SET_REGS44(dst, arg2));
774 case SLJIT_MOV_U8:
775 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG2);
776 if (IS_2_LO_REGS(dst, arg2))
777 return push_inst16(compiler, UXTB | RD3(dst) | RN3(arg2));
778 return push_inst32(compiler, UXTB_W | RD4(dst) | RM4(arg2));
779 case SLJIT_MOV_S8:
780 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG2);
781 if (IS_2_LO_REGS(dst, arg2))
782 return push_inst16(compiler, SXTB | RD3(dst) | RN3(arg2));
783 return push_inst32(compiler, SXTB_W | RD4(dst) | RM4(arg2));
784 case SLJIT_MOV_U16:
785 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG2);
786 if (IS_2_LO_REGS(dst, arg2))
787 return push_inst16(compiler, UXTH | RD3(dst) | RN3(arg2));
788 return push_inst32(compiler, UXTH_W | RD4(dst) | RM4(arg2));
789 case SLJIT_MOV_S16:
790 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG2);
791 if (IS_2_LO_REGS(dst, arg2))
792 return push_inst16(compiler, SXTH | RD3(dst) | RN3(arg2));
793 return push_inst32(compiler, SXTH_W | RD4(dst) | RM4(arg2));
794 case SLJIT_NOT:
795 SLJIT_ASSERT(arg1 == TMP_REG2);
796 if (IS_2_LO_REGS(dst, arg2))
797 return push_inst16(compiler, MVNS | RD3(dst) | RN3(arg2));
798 return push_inst32(compiler, MVN_W | (flags & SET_FLAGS) | RD4(dst) | RM4(arg2));
799 case SLJIT_CLZ:
800 SLJIT_ASSERT(arg1 == TMP_REG2);
801 FAIL_IF(push_inst32(compiler, CLZ | RN4(arg2) | RD4(dst) | RM4(arg2)));
802 return SLJIT_SUCCESS;
803 case SLJIT_ADD:
804 if (IS_3_LO_REGS(dst, arg1, arg2))
805 return push_inst16(compiler, ADDS | RD3(dst) | RN3(arg1) | RM3(arg2));
806 if (dst == arg1 && !(flags & SET_FLAGS))
807 return push_inst16(compiler, ADD | SET_REGS44(dst, arg2));
808 return push_inst32(compiler, ADD_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
809 case SLJIT_ADDC:
810 if (dst == arg1 && IS_2_LO_REGS(dst, arg2))
811 return push_inst16(compiler, ADCS | RD3(dst) | RN3(arg2));
812 return push_inst32(compiler, ADC_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
813 case SLJIT_SUB:
814 if (flags & UNUSED_RETURN) {
815 if (IS_2_LO_REGS(arg1, arg2))
816 return push_inst16(compiler, CMP | RD3(arg1) | RN3(arg2));
817 return push_inst16(compiler, CMP_X | SET_REGS44(arg1, arg2));
818 }
819 if (IS_3_LO_REGS(dst, arg1, arg2))
820 return push_inst16(compiler, SUBS | RD3(dst) | RN3(arg1) | RM3(arg2));
821 return push_inst32(compiler, SUB_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
822 case SLJIT_SUBC:
823 if (dst == arg1 && IS_2_LO_REGS(dst, arg2))
824 return push_inst16(compiler, SBCS | RD3(dst) | RN3(arg2));
825 return push_inst32(compiler, SBC_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
826 case SLJIT_MUL:
827 if (!(flags & SET_FLAGS))
828 return push_inst32(compiler, MUL | RD4(dst) | RN4(arg1) | RM4(arg2));
829 SLJIT_ASSERT(dst != TMP_REG2);
830 FAIL_IF(push_inst32(compiler, SMULL | RT4(dst) | RD4(TMP_REG2) | RN4(arg1) | RM4(arg2)));
831 /* cmp TMP_REG2, dst asr #31. */
832 return push_inst32(compiler, CMP_W | RN4(TMP_REG2) | 0x70e0 | RM4(dst));
833 case SLJIT_AND:
834 if (dst == arg1 && IS_2_LO_REGS(dst, arg2))
835 return push_inst16(compiler, ANDS | RD3(dst) | RN3(arg2));
836 if ((flags & UNUSED_RETURN) && IS_2_LO_REGS(arg1, arg2))
837 return push_inst16(compiler, TST | RD3(arg1) | RN3(arg2));
838 return push_inst32(compiler, AND_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
839 case SLJIT_OR:
840 if (dst == arg1 && IS_2_LO_REGS(dst, arg2))
841 return push_inst16(compiler, ORRS | RD3(dst) | RN3(arg2));
842 return push_inst32(compiler, ORR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
843 case SLJIT_XOR:
844 if (dst == arg1 && IS_2_LO_REGS(dst, arg2))
845 return push_inst16(compiler, EORS | RD3(dst) | RN3(arg2));
846 return push_inst32(compiler, EOR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
847 case SLJIT_SHL:
848 if (dst == arg1 && IS_2_LO_REGS(dst, arg2))
849 return push_inst16(compiler, LSLS | RD3(dst) | RN3(arg2));
850 return push_inst32(compiler, LSL_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
851 case SLJIT_LSHR:
852 if (dst == arg1 && IS_2_LO_REGS(dst, arg2))
853 return push_inst16(compiler, LSRS | RD3(dst) | RN3(arg2));
854 return push_inst32(compiler, LSR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
855 case SLJIT_ASHR:
856 if (dst == arg1 && IS_2_LO_REGS(dst, arg2))
857 return push_inst16(compiler, ASRS | RD3(dst) | RN3(arg2));
858 return push_inst32(compiler, ASR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
859 }
860
861 SLJIT_UNREACHABLE();
862 return SLJIT_SUCCESS;
863 }
864
865 #define STORE 0x01
866 #define SIGNED 0x02
867
868 #define WORD_SIZE 0x00
869 #define BYTE_SIZE 0x04
870 #define HALF_SIZE 0x08
871 #define PRELOAD 0x0c
872
873 #define IS_WORD_SIZE(flags) (!(flags & (BYTE_SIZE | HALF_SIZE)))
874 #define OFFSET_CHECK(imm, shift) (!(argw & ~(imm << shift)))
875
876 /*
877 1st letter:
878 w = word
879 b = byte
880 h = half
881
882 2nd letter:
883 s = signed
884 u = unsigned
885
886 3rd letter:
887 l = load
888 s = store
889 */
890
891 static const sljit_ins sljit_mem16[12] = {
892 /* w u l */ 0x5800 /* ldr */,
893 /* w u s */ 0x5000 /* str */,
894 /* w s l */ 0x5800 /* ldr */,
895 /* w s s */ 0x5000 /* str */,
896
897 /* b u l */ 0x5c00 /* ldrb */,
898 /* b u s */ 0x5400 /* strb */,
899 /* b s l */ 0x5600 /* ldrsb */,
900 /* b s s */ 0x5400 /* strb */,
901
902 /* h u l */ 0x5a00 /* ldrh */,
903 /* h u s */ 0x5200 /* strh */,
904 /* h s l */ 0x5e00 /* ldrsh */,
905 /* h s s */ 0x5200 /* strh */,
906 };
907
908 static const sljit_ins sljit_mem16_imm5[12] = {
909 /* w u l */ 0x6800 /* ldr imm5 */,
910 /* w u s */ 0x6000 /* str imm5 */,
911 /* w s l */ 0x6800 /* ldr imm5 */,
912 /* w s s */ 0x6000 /* str imm5 */,
913
914 /* b u l */ 0x7800 /* ldrb imm5 */,
915 /* b u s */ 0x7000 /* strb imm5 */,
916 /* b s l */ 0x0000 /* not allowed */,
917 /* b s s */ 0x7000 /* strb imm5 */,
918
919 /* h u l */ 0x8800 /* ldrh imm5 */,
920 /* h u s */ 0x8000 /* strh imm5 */,
921 /* h s l */ 0x0000 /* not allowed */,
922 /* h s s */ 0x8000 /* strh imm5 */,
923 };
924
925 #define MEM_IMM8 0xc00
926 #define MEM_IMM12 0x800000
927 static const sljit_ins sljit_mem32[13] = {
928 /* w u l */ 0xf8500000 /* ldr.w */,
929 /* w u s */ 0xf8400000 /* str.w */,
930 /* w s l */ 0xf8500000 /* ldr.w */,
931 /* w s s */ 0xf8400000 /* str.w */,
932
933 /* b u l */ 0xf8100000 /* ldrb.w */,
934 /* b u s */ 0xf8000000 /* strb.w */,
935 /* b s l */ 0xf9100000 /* ldrsb.w */,
936 /* b s s */ 0xf8000000 /* strb.w */,
937
938 /* h u l */ 0xf8300000 /* ldrh.w */,
939 /* h u s */ 0xf8200000 /* strsh.w */,
940 /* h s l */ 0xf9300000 /* ldrsh.w */,
941 /* h s s */ 0xf8200000 /* strsh.w */,
942
943 /* p u l */ 0xf8100000 /* pld */,
944 };
945
946 /* Helper function. Dst should be reg + value, using at most 1 instruction, flags does not set. */
emit_set_delta(struct sljit_compiler * compiler,sljit_s32 dst,sljit_s32 reg,sljit_sw value)947 static sljit_s32 emit_set_delta(struct sljit_compiler *compiler, sljit_s32 dst, sljit_s32 reg, sljit_sw value)
948 {
949 if (value >= 0) {
950 if (value <= 0xfff)
951 return push_inst32(compiler, ADDWI | RD4(dst) | RN4(reg) | IMM12(value));
952 value = get_imm(value);
953 if (value != INVALID_IMM)
954 return push_inst32(compiler, ADD_WI | RD4(dst) | RN4(reg) | value);
955 }
956 else {
957 value = -value;
958 if (value <= 0xfff)
959 return push_inst32(compiler, SUBWI | RD4(dst) | RN4(reg) | IMM12(value));
960 value = get_imm(value);
961 if (value != INVALID_IMM)
962 return push_inst32(compiler, SUB_WI | RD4(dst) | RN4(reg) | value);
963 }
964 return SLJIT_ERR_UNSUPPORTED;
965 }
966
emit_op_mem(struct sljit_compiler * compiler,sljit_s32 flags,sljit_s32 reg,sljit_s32 arg,sljit_sw argw,sljit_s32 tmp_reg)967 static SLJIT_INLINE sljit_s32 emit_op_mem(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg,
968 sljit_s32 arg, sljit_sw argw, sljit_s32 tmp_reg)
969 {
970 sljit_s32 other_r;
971 sljit_uw tmp;
972
973 SLJIT_ASSERT(arg & SLJIT_MEM);
974 SLJIT_ASSERT((arg & REG_MASK) != tmp_reg);
975 arg &= ~SLJIT_MEM;
976
977 if (SLJIT_UNLIKELY(!(arg & REG_MASK))) {
978 tmp = get_imm(argw & ~0xfff);
979 if (tmp != INVALID_IMM) {
980 FAIL_IF(push_inst32(compiler, MOV_WI | RD4(tmp_reg) | tmp));
981 return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(tmp_reg) | (argw & 0xfff));
982 }
983
984 FAIL_IF(load_immediate(compiler, tmp_reg, argw));
985 if (IS_2_LO_REGS(reg, tmp_reg) && sljit_mem16_imm5[flags])
986 return push_inst16(compiler, sljit_mem16_imm5[flags] | RD3(reg) | RN3(tmp_reg));
987 return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(tmp_reg));
988 }
989
990 if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) {
991 argw &= 0x3;
992 other_r = OFFS_REG(arg);
993 arg &= 0xf;
994
995 if (!argw && IS_3_LO_REGS(reg, arg, other_r))
996 return push_inst16(compiler, sljit_mem16[flags] | RD3(reg) | RN3(arg) | RM3(other_r));
997 return push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(other_r) | (argw << 4));
998 }
999
1000 if (argw > 0xfff) {
1001 tmp = get_imm(argw & ~0xfff);
1002 if (tmp != INVALID_IMM) {
1003 push_inst32(compiler, ADD_WI | RD4(tmp_reg) | RN4(arg) | tmp);
1004 arg = tmp_reg;
1005 argw = argw & 0xfff;
1006 }
1007 }
1008 else if (argw < -0xff) {
1009 tmp = get_imm(-argw & ~0xff);
1010 if (tmp != INVALID_IMM) {
1011 push_inst32(compiler, SUB_WI | RD4(tmp_reg) | RN4(arg) | tmp);
1012 arg = tmp_reg;
1013 argw = -(-argw & 0xff);
1014 }
1015 }
1016
1017 if (IS_2_LO_REGS(reg, arg) && sljit_mem16_imm5[flags]) {
1018 tmp = 3;
1019 if (IS_WORD_SIZE(flags)) {
1020 if (OFFSET_CHECK(0x1f, 2))
1021 tmp = 2;
1022 }
1023 else if (flags & BYTE_SIZE)
1024 {
1025 if (OFFSET_CHECK(0x1f, 0))
1026 tmp = 0;
1027 }
1028 else {
1029 SLJIT_ASSERT(flags & HALF_SIZE);
1030 if (OFFSET_CHECK(0x1f, 1))
1031 tmp = 1;
1032 }
1033
1034 if (tmp < 3)
1035 return push_inst16(compiler, sljit_mem16_imm5[flags] | RD3(reg) | RN3(arg) | (argw << (6 - tmp)));
1036 }
1037 else if (SLJIT_UNLIKELY(arg == SLJIT_SP) && IS_WORD_SIZE(flags) && OFFSET_CHECK(0xff, 2) && reg_map[reg] <= 7) {
1038 /* SP based immediate. */
1039 return push_inst16(compiler, STR_SP | ((flags & STORE) ? 0 : 0x800) | RDN3(reg) | (argw >> 2));
1040 }
1041
1042 if (argw >= 0 && argw <= 0xfff)
1043 return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(arg) | argw);
1044 else if (argw < 0 && argw >= -0xff)
1045 return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM8 | RT4(reg) | RN4(arg) | -argw);
1046
1047 SLJIT_ASSERT(arg != tmp_reg);
1048
1049 FAIL_IF(load_immediate(compiler, tmp_reg, argw));
1050 if (IS_3_LO_REGS(reg, arg, tmp_reg))
1051 return push_inst16(compiler, sljit_mem16[flags] | RD3(reg) | RN3(arg) | RM3(tmp_reg));
1052 return push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(tmp_reg));
1053 }
1054
1055 /* --------------------------------------------------------------------- */
1056 /* Entry, exit */
1057 /* --------------------------------------------------------------------- */
1058
sljit_emit_enter(struct sljit_compiler * compiler,sljit_s32 options,sljit_s32 arg_types,sljit_s32 scratches,sljit_s32 saveds,sljit_s32 fscratches,sljit_s32 fsaveds,sljit_s32 local_size)1059 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compiler,
1060 sljit_s32 options, sljit_s32 arg_types, sljit_s32 scratches, sljit_s32 saveds,
1061 sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size)
1062 {
1063 sljit_s32 args, size, i, tmp;
1064 sljit_ins push = 0;
1065 #ifdef _WIN32
1066 sljit_uw imm;
1067 #endif
1068
1069 CHECK_ERROR();
1070 CHECK(check_sljit_emit_enter(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size));
1071 set_emit_enter(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size);
1072
1073 tmp = saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - saveds) : SLJIT_FIRST_SAVED_REG;
1074 for (i = SLJIT_S0; i >= tmp; i--)
1075 push |= 1 << reg_map[i];
1076
1077 for (i = scratches; i >= SLJIT_FIRST_SAVED_REG; i--)
1078 push |= 1 << reg_map[i];
1079
1080 FAIL_IF((push & 0xff00)
1081 ? push_inst32(compiler, PUSH_W | (1 << 14) | push)
1082 : push_inst16(compiler, PUSH | (1 << 8) | push));
1083
1084 /* Stack must be aligned to 8 bytes: (LR, R4) */
1085 size = GET_SAVED_REGISTERS_SIZE(scratches, saveds, 1);
1086 local_size = ((size + local_size + 7) & ~7) - size;
1087 compiler->local_size = local_size;
1088
1089 #ifdef _WIN32
1090 if (local_size >= 256) {
1091 if (local_size > 4096)
1092 imm = get_imm(4096);
1093 else
1094 imm = get_imm(local_size & ~0xff);
1095
1096 SLJIT_ASSERT(imm != INVALID_IMM);
1097 FAIL_IF(push_inst32(compiler, SUB_WI | RD4(TMP_REG1) | RN4(SLJIT_SP) | imm));
1098 }
1099 #else
1100 if (local_size > 0) {
1101 if (local_size <= (127 << 2))
1102 FAIL_IF(push_inst16(compiler, SUB_SP | (local_size >> 2)));
1103 else
1104 FAIL_IF(emit_op_imm(compiler, SLJIT_SUB | ARG2_IMM, SLJIT_SP, SLJIT_SP, local_size));
1105 }
1106 #endif
1107
1108 args = get_arg_count(arg_types);
1109
1110 if (args >= 1)
1111 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_S0, SLJIT_R0)));
1112 if (args >= 2)
1113 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_S1, SLJIT_R1)));
1114 if (args >= 3)
1115 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_S2, SLJIT_R2)));
1116
1117 #ifdef _WIN32
1118 if (local_size >= 256) {
1119 if (local_size > 4096) {
1120 imm = get_imm(4096);
1121 SLJIT_ASSERT(imm != INVALID_IMM);
1122
1123 if (local_size < 4 * 4096) {
1124 if (local_size > 2 * 4096) {
1125 FAIL_IF(push_inst32(compiler, LDRI | 0x400 | RT4(TMP_REG2) | RN4(TMP_REG1)));
1126 FAIL_IF(push_inst32(compiler, SUB_WI | RD4(TMP_REG1) | RN4(TMP_REG1) | imm));
1127 local_size -= 4096;
1128 }
1129
1130 if (local_size > 2 * 4096) {
1131 FAIL_IF(push_inst32(compiler, LDRI | 0x400 | RT4(TMP_REG2) | RN4(TMP_REG1)));
1132 FAIL_IF(push_inst32(compiler, SUB_WI | RD4(TMP_REG1) | RN4(TMP_REG1) | imm));
1133 local_size -= 4096;
1134 }
1135
1136 FAIL_IF(push_inst32(compiler, LDRI | 0x400 | RT4(TMP_REG2) | RN4(TMP_REG1)));
1137 local_size -= 4096;
1138
1139 SLJIT_ASSERT(local_size > 0);
1140 }
1141 else {
1142 FAIL_IF(load_immediate(compiler, SLJIT_R3, (local_size >> 12) - 1));
1143 FAIL_IF(push_inst32(compiler, LDRI | 0x400 | RT4(TMP_REG2) | RN4(TMP_REG1)));
1144 FAIL_IF(push_inst32(compiler, SUB_WI | RD4(TMP_REG1) | RN4(TMP_REG1) | imm));
1145 SLJIT_ASSERT(reg_map[SLJIT_R3] < 7);
1146 FAIL_IF(push_inst16(compiler, SUBSI8 | RDN3(SLJIT_R3) | 1));
1147 FAIL_IF(push_inst16(compiler, BCC | (0x1 << 8) /* not-equal */ | (-7 & 0xff)));
1148
1149 local_size &= 0xfff;
1150
1151 if (local_size != 0)
1152 FAIL_IF(push_inst32(compiler, LDRI | 0x400 | RT4(TMP_REG2) | RN4(TMP_REG1)));
1153 }
1154
1155 if (local_size >= 256) {
1156 imm = get_imm(local_size & ~0xff);
1157 SLJIT_ASSERT(imm != INVALID_IMM);
1158
1159 FAIL_IF(push_inst32(compiler, SUB_WI | RD4(TMP_REG1) | RN4(TMP_REG1) | imm));
1160 }
1161 }
1162
1163 local_size &= 0xff;
1164 FAIL_IF(push_inst32(compiler, LDRI | 0x400 | (local_size > 0 ? 0x100 : 0) | RT4(TMP_REG2) | RN4(TMP_REG1) | local_size));
1165
1166 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_SP, TMP_REG1)));
1167 }
1168 else if (local_size > 0)
1169 FAIL_IF(push_inst32(compiler, LDRI | 0x500 | RT4(TMP_REG1) | RN4(SLJIT_SP) | local_size));
1170 #endif
1171
1172 return SLJIT_SUCCESS;
1173 }
1174
sljit_set_context(struct sljit_compiler * compiler,sljit_s32 options,sljit_s32 arg_types,sljit_s32 scratches,sljit_s32 saveds,sljit_s32 fscratches,sljit_s32 fsaveds,sljit_s32 local_size)1175 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_set_context(struct sljit_compiler *compiler,
1176 sljit_s32 options, sljit_s32 arg_types, sljit_s32 scratches, sljit_s32 saveds,
1177 sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size)
1178 {
1179 sljit_s32 size;
1180
1181 CHECK_ERROR();
1182 CHECK(check_sljit_set_context(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size));
1183 set_set_context(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size);
1184
1185 size = GET_SAVED_REGISTERS_SIZE(scratches, saveds, 1);
1186 compiler->local_size = ((size + local_size + 7) & ~7) - size;
1187 return SLJIT_SUCCESS;
1188 }
1189
sljit_emit_return(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 src,sljit_sw srcw)1190 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 src, sljit_sw srcw)
1191 {
1192 sljit_s32 i, tmp;
1193 sljit_ins pop = 0;
1194
1195 CHECK_ERROR();
1196 CHECK(check_sljit_emit_return(compiler, op, src, srcw));
1197
1198 FAIL_IF(emit_mov_before_return(compiler, op, src, srcw));
1199
1200 if (compiler->local_size > 0) {
1201 if (compiler->local_size <= (127 << 2))
1202 FAIL_IF(push_inst16(compiler, ADD_SP | (compiler->local_size >> 2)));
1203 else
1204 FAIL_IF(emit_op_imm(compiler, SLJIT_ADD | ARG2_IMM, SLJIT_SP, SLJIT_SP, compiler->local_size));
1205 }
1206
1207 tmp = compiler->saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - compiler->saveds) : SLJIT_FIRST_SAVED_REG;
1208 for (i = SLJIT_S0; i >= tmp; i--)
1209 pop |= 1 << reg_map[i];
1210
1211 for (i = compiler->scratches; i >= SLJIT_FIRST_SAVED_REG; i--)
1212 pop |= 1 << reg_map[i];
1213
1214 return (pop & 0xff00)
1215 ? push_inst32(compiler, POP_W | (1 << 15) | pop)
1216 : push_inst16(compiler, POP | (1 << 8) | pop);
1217 }
1218
1219 /* --------------------------------------------------------------------- */
1220 /* Operators */
1221 /* --------------------------------------------------------------------- */
1222
1223 #if !(defined __ARM_FEATURE_IDIV) && !(defined __ARM_ARCH_EXT_IDIV__)
1224
1225 #ifdef __cplusplus
1226 extern "C" {
1227 #endif
1228
1229 #ifdef _WIN32
1230 extern unsigned long long __rt_udiv(unsigned int denominator, unsigned int numerator);
1231 extern long long __rt_sdiv(int denominator, int numerator);
1232 #elif defined(__GNUC__)
1233 extern unsigned int __aeabi_uidivmod(unsigned int numerator, int unsigned denominator);
1234 extern int __aeabi_idivmod(int numerator, int denominator);
1235 #else
1236 #error "Software divmod functions are needed"
1237 #endif
1238
1239 #ifdef __cplusplus
1240 }
1241 #endif
1242
1243 #endif /* !__ARM_FEATURE_IDIV && !__ARM_ARCH_EXT_IDIV__ */
1244
sljit_emit_op0(struct sljit_compiler * compiler,sljit_s32 op)1245 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op0(struct sljit_compiler *compiler, sljit_s32 op)
1246 {
1247 #if !(defined __ARM_FEATURE_IDIV) && !(defined __ARM_ARCH_EXT_IDIV__)
1248 sljit_sw saved_reg_list[3];
1249 sljit_sw saved_reg_count;
1250 #endif
1251
1252 CHECK_ERROR();
1253 CHECK(check_sljit_emit_op0(compiler, op));
1254
1255 op = GET_OPCODE(op);
1256 switch (op) {
1257 case SLJIT_BREAKPOINT:
1258 return push_inst16(compiler, BKPT);
1259 case SLJIT_NOP:
1260 return push_inst16(compiler, NOP);
1261 case SLJIT_LMUL_UW:
1262 case SLJIT_LMUL_SW:
1263 return push_inst32(compiler, (op == SLJIT_LMUL_UW ? UMULL : SMULL)
1264 | (reg_map[SLJIT_R1] << 8)
1265 | (reg_map[SLJIT_R0] << 12)
1266 | (reg_map[SLJIT_R0] << 16)
1267 | reg_map[SLJIT_R1]);
1268 #if (defined __ARM_FEATURE_IDIV) || (defined __ARM_ARCH_EXT_IDIV__)
1269 case SLJIT_DIVMOD_UW:
1270 case SLJIT_DIVMOD_SW:
1271 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(TMP_REG1, SLJIT_R0)));
1272 FAIL_IF(push_inst32(compiler, (op == SLJIT_DIVMOD_UW ? UDIV : SDIV) | RD4(SLJIT_R0) | RN4(SLJIT_R0) | RM4(SLJIT_R1)));
1273 FAIL_IF(push_inst32(compiler, MUL | RD4(SLJIT_R1) | RN4(SLJIT_R0) | RM4(SLJIT_R1)));
1274 return push_inst32(compiler, SUB_W | RD4(SLJIT_R1) | RN4(TMP_REG1) | RM4(SLJIT_R1));
1275 case SLJIT_DIV_UW:
1276 case SLJIT_DIV_SW:
1277 return push_inst32(compiler, (op == SLJIT_DIV_UW ? UDIV : SDIV) | RD4(SLJIT_R0) | RN4(SLJIT_R0) | RM4(SLJIT_R1));
1278 #else /* !__ARM_FEATURE_IDIV && !__ARM_ARCH_EXT_IDIV__ */
1279 case SLJIT_DIVMOD_UW:
1280 case SLJIT_DIVMOD_SW:
1281 case SLJIT_DIV_UW:
1282 case SLJIT_DIV_SW:
1283 SLJIT_COMPILE_ASSERT((SLJIT_DIVMOD_UW & 0x2) == 0 && SLJIT_DIV_UW - 0x2 == SLJIT_DIVMOD_UW, bad_div_opcode_assignments);
1284 SLJIT_ASSERT(reg_map[2] == 1 && reg_map[3] == 2 && reg_map[4] == 3);
1285
1286 saved_reg_count = 0;
1287 if (compiler->scratches >= 4)
1288 saved_reg_list[saved_reg_count++] = 3;
1289 if (compiler->scratches >= 3)
1290 saved_reg_list[saved_reg_count++] = 2;
1291 if (op >= SLJIT_DIV_UW)
1292 saved_reg_list[saved_reg_count++] = 1;
1293
1294 if (saved_reg_count > 0) {
1295 FAIL_IF(push_inst32(compiler, 0xf84d0d00 | (saved_reg_count >= 3 ? 16 : 8)
1296 | (saved_reg_list[0] << 12) /* str rX, [sp, #-8/-16]! */));
1297 if (saved_reg_count >= 2) {
1298 SLJIT_ASSERT(saved_reg_list[1] < 8);
1299 FAIL_IF(push_inst16(compiler, 0x9001 | (saved_reg_list[1] << 8) /* str rX, [sp, #4] */));
1300 }
1301 if (saved_reg_count >= 3) {
1302 SLJIT_ASSERT(saved_reg_list[2] < 8);
1303 FAIL_IF(push_inst16(compiler, 0x9002 | (saved_reg_list[2] << 8) /* str rX, [sp, #8] */));
1304 }
1305 }
1306
1307 #ifdef _WIN32
1308 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(TMP_REG1, SLJIT_R0)));
1309 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_R0, SLJIT_R1)));
1310 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_R1, TMP_REG1)));
1311 FAIL_IF(sljit_emit_ijump(compiler, SLJIT_FAST_CALL, SLJIT_IMM,
1312 ((op | 0x2) == SLJIT_DIV_UW ? SLJIT_FUNC_OFFSET(__rt_udiv) : SLJIT_FUNC_OFFSET(__rt_sdiv))));
1313 #elif defined(__GNUC__)
1314 FAIL_IF(sljit_emit_ijump(compiler, SLJIT_FAST_CALL, SLJIT_IMM,
1315 ((op | 0x2) == SLJIT_DIV_UW ? SLJIT_FUNC_OFFSET(__aeabi_uidivmod) : SLJIT_FUNC_OFFSET(__aeabi_idivmod))));
1316 #else
1317 #error "Software divmod functions are needed"
1318 #endif
1319
1320 if (saved_reg_count > 0) {
1321 if (saved_reg_count >= 3) {
1322 SLJIT_ASSERT(saved_reg_list[2] < 8);
1323 FAIL_IF(push_inst16(compiler, 0x9802 | (saved_reg_list[2] << 8) /* ldr rX, [sp, #8] */));
1324 }
1325 if (saved_reg_count >= 2) {
1326 SLJIT_ASSERT(saved_reg_list[1] < 8);
1327 FAIL_IF(push_inst16(compiler, 0x9801 | (saved_reg_list[1] << 8) /* ldr rX, [sp, #4] */));
1328 }
1329 return push_inst32(compiler, 0xf85d0b00 | (saved_reg_count >= 3 ? 16 : 8)
1330 | (saved_reg_list[0] << 12) /* ldr rX, [sp], #8/16 */);
1331 }
1332 return SLJIT_SUCCESS;
1333 #endif /* __ARM_FEATURE_IDIV || __ARM_ARCH_EXT_IDIV__ */
1334 case SLJIT_ENDBR:
1335 case SLJIT_SKIP_FRAMES_BEFORE_RETURN:
1336 return SLJIT_SUCCESS;
1337 }
1338
1339 return SLJIT_SUCCESS;
1340 }
1341
sljit_emit_op1(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 dst,sljit_sw dstw,sljit_s32 src,sljit_sw srcw)1342 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op1(struct sljit_compiler *compiler, sljit_s32 op,
1343 sljit_s32 dst, sljit_sw dstw,
1344 sljit_s32 src, sljit_sw srcw)
1345 {
1346 sljit_s32 dst_r, flags;
1347 sljit_s32 op_flags = GET_ALL_FLAGS(op);
1348
1349 CHECK_ERROR();
1350 CHECK(check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw));
1351 ADJUST_LOCAL_OFFSET(dst, dstw);
1352 ADJUST_LOCAL_OFFSET(src, srcw);
1353
1354 dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG1;
1355
1356 op = GET_OPCODE(op);
1357 if (op >= SLJIT_MOV && op <= SLJIT_MOV_P) {
1358 switch (op) {
1359 case SLJIT_MOV:
1360 case SLJIT_MOV_U32:
1361 case SLJIT_MOV_S32:
1362 case SLJIT_MOV_P:
1363 flags = WORD_SIZE;
1364 break;
1365 case SLJIT_MOV_U8:
1366 flags = BYTE_SIZE;
1367 if (src & SLJIT_IMM)
1368 srcw = (sljit_u8)srcw;
1369 break;
1370 case SLJIT_MOV_S8:
1371 flags = BYTE_SIZE | SIGNED;
1372 if (src & SLJIT_IMM)
1373 srcw = (sljit_s8)srcw;
1374 break;
1375 case SLJIT_MOV_U16:
1376 flags = HALF_SIZE;
1377 if (src & SLJIT_IMM)
1378 srcw = (sljit_u16)srcw;
1379 break;
1380 case SLJIT_MOV_S16:
1381 flags = HALF_SIZE | SIGNED;
1382 if (src & SLJIT_IMM)
1383 srcw = (sljit_s16)srcw;
1384 break;
1385 default:
1386 SLJIT_UNREACHABLE();
1387 flags = 0;
1388 break;
1389 }
1390
1391 if (src & SLJIT_IMM)
1392 FAIL_IF(emit_op_imm(compiler, SLJIT_MOV | ARG2_IMM, dst_r, TMP_REG2, srcw));
1393 else if (src & SLJIT_MEM) {
1394 FAIL_IF(emit_op_mem(compiler, flags, dst_r, src, srcw, TMP_REG1));
1395 } else {
1396 if (dst_r != TMP_REG1)
1397 return emit_op_imm(compiler, op, dst_r, TMP_REG2, src);
1398 dst_r = src;
1399 }
1400
1401 if (!(dst & SLJIT_MEM))
1402 return SLJIT_SUCCESS;
1403
1404 return emit_op_mem(compiler, flags | STORE, dst_r, dst, dstw, TMP_REG2);
1405 }
1406
1407 if (op == SLJIT_NEG) {
1408 #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \
1409 || (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS)
1410 compiler->skip_checks = 1;
1411 #endif
1412 return sljit_emit_op2(compiler, SLJIT_SUB | op_flags, dst, dstw, SLJIT_IMM, 0, src, srcw);
1413 }
1414
1415 flags = HAS_FLAGS(op_flags) ? SET_FLAGS : 0;
1416
1417 if (src & SLJIT_MEM) {
1418 FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG1, src, srcw, TMP_REG1));
1419 src = TMP_REG1;
1420 }
1421
1422 emit_op_imm(compiler, flags | op, dst_r, TMP_REG2, src);
1423
1424 if (SLJIT_UNLIKELY(dst & SLJIT_MEM))
1425 return emit_op_mem(compiler, flags | STORE, dst_r, dst, dstw, TMP_REG2);
1426 return SLJIT_SUCCESS;
1427 }
1428
sljit_emit_op2(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 dst,sljit_sw dstw,sljit_s32 src1,sljit_sw src1w,sljit_s32 src2,sljit_sw src2w)1429 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op2(struct sljit_compiler *compiler, sljit_s32 op,
1430 sljit_s32 dst, sljit_sw dstw,
1431 sljit_s32 src1, sljit_sw src1w,
1432 sljit_s32 src2, sljit_sw src2w)
1433 {
1434 sljit_s32 dst_reg, flags, src2_reg;
1435
1436 CHECK_ERROR();
1437 CHECK(check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w));
1438 ADJUST_LOCAL_OFFSET(dst, dstw);
1439 ADJUST_LOCAL_OFFSET(src1, src1w);
1440 ADJUST_LOCAL_OFFSET(src2, src2w);
1441
1442 if (dst == SLJIT_UNUSED && !HAS_FLAGS(op))
1443 return SLJIT_SUCCESS;
1444
1445 dst_reg = SLOW_IS_REG(dst) ? dst : TMP_REG1;
1446 flags = HAS_FLAGS(op) ? SET_FLAGS : 0;
1447
1448 if (src1 & SLJIT_IMM)
1449 flags |= ARG1_IMM;
1450 else if (src1 & SLJIT_MEM) {
1451 emit_op_mem(compiler, WORD_SIZE, TMP_REG1, src1, src1w, TMP_REG1);
1452 src1w = TMP_REG1;
1453 }
1454 else
1455 src1w = src1;
1456
1457 if (src2 & SLJIT_IMM)
1458 flags |= ARG2_IMM;
1459 else if (src2 & SLJIT_MEM) {
1460 src2_reg = (!(flags & ARG1_IMM) && (src1w == TMP_REG1)) ? TMP_REG2 : TMP_REG1;
1461 emit_op_mem(compiler, WORD_SIZE, src2_reg, src2, src2w, src2_reg);
1462 src2w = src2_reg;
1463 }
1464 else
1465 src2w = src2;
1466
1467 if (dst == SLJIT_UNUSED)
1468 flags |= UNUSED_RETURN;
1469
1470 emit_op_imm(compiler, flags | GET_OPCODE(op), dst_reg, src1w, src2w);
1471
1472 if (!(dst & SLJIT_MEM))
1473 return SLJIT_SUCCESS;
1474 return emit_op_mem(compiler, WORD_SIZE | STORE, dst_reg, dst, dstw, TMP_REG2);
1475 }
1476
sljit_emit_op_src(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 src,sljit_sw srcw)1477 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_src(struct sljit_compiler *compiler, sljit_s32 op,
1478 sljit_s32 src, sljit_sw srcw)
1479 {
1480 CHECK_ERROR();
1481 CHECK(check_sljit_emit_op_src(compiler, op, src, srcw));
1482 ADJUST_LOCAL_OFFSET(src, srcw);
1483
1484 switch (op) {
1485 case SLJIT_FAST_RETURN:
1486 SLJIT_ASSERT(reg_map[TMP_REG2] == 14);
1487
1488 if (FAST_IS_REG(src))
1489 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(TMP_REG2, src)));
1490 else
1491 FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG2, src, srcw, TMP_REG2));
1492
1493 return push_inst16(compiler, BX | RN3(TMP_REG2));
1494 case SLJIT_SKIP_FRAMES_BEFORE_FAST_RETURN:
1495 return SLJIT_SUCCESS;
1496 case SLJIT_PREFETCH_L1:
1497 case SLJIT_PREFETCH_L2:
1498 case SLJIT_PREFETCH_L3:
1499 case SLJIT_PREFETCH_ONCE:
1500 return emit_op_mem(compiler, PRELOAD, TMP_PC, src, srcw, TMP_REG1);
1501 }
1502
1503 return SLJIT_SUCCESS;
1504 }
1505
sljit_get_register_index(sljit_s32 reg)1506 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_register_index(sljit_s32 reg)
1507 {
1508 CHECK_REG_INDEX(check_sljit_get_register_index(reg));
1509 return reg_map[reg];
1510 }
1511
sljit_get_float_register_index(sljit_s32 reg)1512 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_float_register_index(sljit_s32 reg)
1513 {
1514 CHECK_REG_INDEX(check_sljit_get_float_register_index(reg));
1515 return (freg_map[reg] << 1);
1516 }
1517
sljit_emit_op_custom(struct sljit_compiler * compiler,void * instruction,sljit_s32 size)1518 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_custom(struct sljit_compiler *compiler,
1519 void *instruction, sljit_s32 size)
1520 {
1521 CHECK_ERROR();
1522 CHECK(check_sljit_emit_op_custom(compiler, instruction, size));
1523
1524 if (size == 2)
1525 return push_inst16(compiler, *(sljit_u16*)instruction);
1526 return push_inst32(compiler, *(sljit_ins*)instruction);
1527 }
1528
1529 /* --------------------------------------------------------------------- */
1530 /* Floating point operators */
1531 /* --------------------------------------------------------------------- */
1532
1533 #define FPU_LOAD (1 << 20)
1534
emit_fop_mem(struct sljit_compiler * compiler,sljit_s32 flags,sljit_s32 reg,sljit_s32 arg,sljit_sw argw)1535 static sljit_s32 emit_fop_mem(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, sljit_s32 arg, sljit_sw argw)
1536 {
1537 sljit_uw imm;
1538 sljit_sw inst = VSTR_F32 | (flags & (SLJIT_F32_OP | FPU_LOAD));
1539
1540 SLJIT_ASSERT(arg & SLJIT_MEM);
1541
1542 /* Fast loads and stores. */
1543 if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) {
1544 FAIL_IF(push_inst32(compiler, ADD_W | RD4(TMP_REG1) | RN4(arg & REG_MASK) | RM4(OFFS_REG(arg)) | ((argw & 0x3) << 6)));
1545 arg = SLJIT_MEM | TMP_REG1;
1546 argw = 0;
1547 }
1548
1549 if ((arg & REG_MASK) && (argw & 0x3) == 0) {
1550 if (!(argw & ~0x3fc))
1551 return push_inst32(compiler, inst | 0x800000 | RN4(arg & REG_MASK) | DD4(reg) | (argw >> 2));
1552 if (!(-argw & ~0x3fc))
1553 return push_inst32(compiler, inst | RN4(arg & REG_MASK) | DD4(reg) | (-argw >> 2));
1554 }
1555
1556 if (arg & REG_MASK) {
1557 if (emit_set_delta(compiler, TMP_REG1, arg & REG_MASK, argw) != SLJIT_ERR_UNSUPPORTED) {
1558 FAIL_IF(compiler->error);
1559 return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG1) | DD4(reg));
1560 }
1561 imm = get_imm(argw & ~0x3fc);
1562 if (imm != INVALID_IMM) {
1563 FAIL_IF(push_inst32(compiler, ADD_WI | RD4(TMP_REG1) | RN4(arg & REG_MASK) | imm));
1564 return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG1) | DD4(reg) | ((argw & 0x3fc) >> 2));
1565 }
1566 imm = get_imm(-argw & ~0x3fc);
1567 if (imm != INVALID_IMM) {
1568 argw = -argw;
1569 FAIL_IF(push_inst32(compiler, SUB_WI | RD4(TMP_REG1) | RN4(arg & REG_MASK) | imm));
1570 return push_inst32(compiler, inst | RN4(TMP_REG1) | DD4(reg) | ((argw & 0x3fc) >> 2));
1571 }
1572 }
1573
1574 FAIL_IF(load_immediate(compiler, TMP_REG1, argw));
1575 if (arg & REG_MASK)
1576 FAIL_IF(push_inst16(compiler, ADD | SET_REGS44(TMP_REG1, (arg & REG_MASK))));
1577 return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG1) | DD4(reg));
1578 }
1579
sljit_emit_fop1_conv_sw_from_f64(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 dst,sljit_sw dstw,sljit_s32 src,sljit_sw srcw)1580 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_sw_from_f64(struct sljit_compiler *compiler, sljit_s32 op,
1581 sljit_s32 dst, sljit_sw dstw,
1582 sljit_s32 src, sljit_sw srcw)
1583 {
1584 op ^= SLJIT_F32_OP;
1585
1586 if (src & SLJIT_MEM) {
1587 FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, TMP_FREG1, src, srcw));
1588 src = TMP_FREG1;
1589 }
1590
1591 FAIL_IF(push_inst32(compiler, VCVT_S32_F32 | (op & SLJIT_F32_OP) | DD4(TMP_FREG1) | DM4(src)));
1592
1593 if (FAST_IS_REG(dst))
1594 return push_inst32(compiler, VMOV | (1 << 20) | RT4(dst) | DN4(TMP_FREG1));
1595
1596 /* Store the integer value from a VFP register. */
1597 return emit_fop_mem(compiler, 0, TMP_FREG1, dst, dstw);
1598 }
1599
sljit_emit_fop1_conv_f64_from_sw(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 dst,sljit_sw dstw,sljit_s32 src,sljit_sw srcw)1600 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_f64_from_sw(struct sljit_compiler *compiler, sljit_s32 op,
1601 sljit_s32 dst, sljit_sw dstw,
1602 sljit_s32 src, sljit_sw srcw)
1603 {
1604 sljit_s32 dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1;
1605
1606 op ^= SLJIT_F32_OP;
1607
1608 if (FAST_IS_REG(src))
1609 FAIL_IF(push_inst32(compiler, VMOV | RT4(src) | DN4(TMP_FREG1)));
1610 else if (src & SLJIT_MEM) {
1611 /* Load the integer value into a VFP register. */
1612 FAIL_IF(emit_fop_mem(compiler, FPU_LOAD, TMP_FREG1, src, srcw));
1613 }
1614 else {
1615 FAIL_IF(load_immediate(compiler, TMP_REG1, srcw));
1616 FAIL_IF(push_inst32(compiler, VMOV | RT4(TMP_REG1) | DN4(TMP_FREG1)));
1617 }
1618
1619 FAIL_IF(push_inst32(compiler, VCVT_F32_S32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DM4(TMP_FREG1)));
1620
1621 if (dst & SLJIT_MEM)
1622 return emit_fop_mem(compiler, (op & SLJIT_F32_OP), TMP_FREG1, dst, dstw);
1623 return SLJIT_SUCCESS;
1624 }
1625
sljit_emit_fop1_cmp(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 src1,sljit_sw src1w,sljit_s32 src2,sljit_sw src2w)1626 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_cmp(struct sljit_compiler *compiler, sljit_s32 op,
1627 sljit_s32 src1, sljit_sw src1w,
1628 sljit_s32 src2, sljit_sw src2w)
1629 {
1630 op ^= SLJIT_F32_OP;
1631
1632 if (src1 & SLJIT_MEM) {
1633 emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, TMP_FREG1, src1, src1w);
1634 src1 = TMP_FREG1;
1635 }
1636
1637 if (src2 & SLJIT_MEM) {
1638 emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, TMP_FREG2, src2, src2w);
1639 src2 = TMP_FREG2;
1640 }
1641
1642 FAIL_IF(push_inst32(compiler, VCMP_F32 | (op & SLJIT_F32_OP) | DD4(src1) | DM4(src2)));
1643 return push_inst32(compiler, VMRS);
1644 }
1645
sljit_emit_fop1(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 dst,sljit_sw dstw,sljit_s32 src,sljit_sw srcw)1646 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop1(struct sljit_compiler *compiler, sljit_s32 op,
1647 sljit_s32 dst, sljit_sw dstw,
1648 sljit_s32 src, sljit_sw srcw)
1649 {
1650 sljit_s32 dst_r;
1651
1652 CHECK_ERROR();
1653
1654 SLJIT_COMPILE_ASSERT((SLJIT_F32_OP == 0x100), float_transfer_bit_error);
1655 SELECT_FOP1_OPERATION_WITH_CHECKS(compiler, op, dst, dstw, src, srcw);
1656
1657 dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1;
1658
1659 if (GET_OPCODE(op) != SLJIT_CONV_F64_FROM_F32)
1660 op ^= SLJIT_F32_OP;
1661
1662 if (src & SLJIT_MEM) {
1663 emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, dst_r, src, srcw);
1664 src = dst_r;
1665 }
1666
1667 switch (GET_OPCODE(op)) {
1668 case SLJIT_MOV_F64:
1669 if (src != dst_r) {
1670 if (dst_r != TMP_FREG1)
1671 FAIL_IF(push_inst32(compiler, VMOV_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DM4(src)));
1672 else
1673 dst_r = src;
1674 }
1675 break;
1676 case SLJIT_NEG_F64:
1677 FAIL_IF(push_inst32(compiler, VNEG_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DM4(src)));
1678 break;
1679 case SLJIT_ABS_F64:
1680 FAIL_IF(push_inst32(compiler, VABS_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DM4(src)));
1681 break;
1682 case SLJIT_CONV_F64_FROM_F32:
1683 FAIL_IF(push_inst32(compiler, VCVT_F64_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DM4(src)));
1684 op ^= SLJIT_F32_OP;
1685 break;
1686 }
1687
1688 if (dst & SLJIT_MEM)
1689 return emit_fop_mem(compiler, (op & SLJIT_F32_OP), dst_r, dst, dstw);
1690 return SLJIT_SUCCESS;
1691 }
1692
sljit_emit_fop2(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 dst,sljit_sw dstw,sljit_s32 src1,sljit_sw src1w,sljit_s32 src2,sljit_sw src2w)1693 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop2(struct sljit_compiler *compiler, sljit_s32 op,
1694 sljit_s32 dst, sljit_sw dstw,
1695 sljit_s32 src1, sljit_sw src1w,
1696 sljit_s32 src2, sljit_sw src2w)
1697 {
1698 sljit_s32 dst_r;
1699
1700 CHECK_ERROR();
1701 CHECK(check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w));
1702 ADJUST_LOCAL_OFFSET(dst, dstw);
1703 ADJUST_LOCAL_OFFSET(src1, src1w);
1704 ADJUST_LOCAL_OFFSET(src2, src2w);
1705
1706 op ^= SLJIT_F32_OP;
1707
1708 dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1;
1709 if (src1 & SLJIT_MEM) {
1710 emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, TMP_FREG1, src1, src1w);
1711 src1 = TMP_FREG1;
1712 }
1713 if (src2 & SLJIT_MEM) {
1714 emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, TMP_FREG2, src2, src2w);
1715 src2 = TMP_FREG2;
1716 }
1717
1718 switch (GET_OPCODE(op)) {
1719 case SLJIT_ADD_F64:
1720 FAIL_IF(push_inst32(compiler, VADD_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DN4(src1) | DM4(src2)));
1721 break;
1722 case SLJIT_SUB_F64:
1723 FAIL_IF(push_inst32(compiler, VSUB_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DN4(src1) | DM4(src2)));
1724 break;
1725 case SLJIT_MUL_F64:
1726 FAIL_IF(push_inst32(compiler, VMUL_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DN4(src1) | DM4(src2)));
1727 break;
1728 case SLJIT_DIV_F64:
1729 FAIL_IF(push_inst32(compiler, VDIV_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DN4(src1) | DM4(src2)));
1730 break;
1731 }
1732
1733 if (!(dst & SLJIT_MEM))
1734 return SLJIT_SUCCESS;
1735 return emit_fop_mem(compiler, (op & SLJIT_F32_OP), TMP_FREG1, dst, dstw);
1736 }
1737
1738 #undef FPU_LOAD
1739
1740 /* --------------------------------------------------------------------- */
1741 /* Other instructions */
1742 /* --------------------------------------------------------------------- */
1743
sljit_emit_fast_enter(struct sljit_compiler * compiler,sljit_s32 dst,sljit_sw dstw)1744 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw)
1745 {
1746 CHECK_ERROR();
1747 CHECK(check_sljit_emit_fast_enter(compiler, dst, dstw));
1748 ADJUST_LOCAL_OFFSET(dst, dstw);
1749
1750 SLJIT_ASSERT(reg_map[TMP_REG2] == 14);
1751
1752 if (FAST_IS_REG(dst))
1753 return push_inst16(compiler, MOV | SET_REGS44(dst, TMP_REG2));
1754
1755 /* Memory. */
1756 return emit_op_mem(compiler, WORD_SIZE | STORE, TMP_REG2, dst, dstw, TMP_REG1);
1757 }
1758
1759 /* --------------------------------------------------------------------- */
1760 /* Conditional instructions */
1761 /* --------------------------------------------------------------------- */
1762
get_cc(sljit_s32 type)1763 static sljit_uw get_cc(sljit_s32 type)
1764 {
1765 switch (type) {
1766 case SLJIT_EQUAL:
1767 case SLJIT_MUL_NOT_OVERFLOW:
1768 case SLJIT_EQUAL_F64:
1769 return 0x0;
1770
1771 case SLJIT_NOT_EQUAL:
1772 case SLJIT_MUL_OVERFLOW:
1773 case SLJIT_NOT_EQUAL_F64:
1774 return 0x1;
1775
1776 case SLJIT_LESS:
1777 case SLJIT_LESS_F64:
1778 return 0x3;
1779
1780 case SLJIT_GREATER_EQUAL:
1781 case SLJIT_GREATER_EQUAL_F64:
1782 return 0x2;
1783
1784 case SLJIT_GREATER:
1785 case SLJIT_GREATER_F64:
1786 return 0x8;
1787
1788 case SLJIT_LESS_EQUAL:
1789 case SLJIT_LESS_EQUAL_F64:
1790 return 0x9;
1791
1792 case SLJIT_SIG_LESS:
1793 return 0xb;
1794
1795 case SLJIT_SIG_GREATER_EQUAL:
1796 return 0xa;
1797
1798 case SLJIT_SIG_GREATER:
1799 return 0xc;
1800
1801 case SLJIT_SIG_LESS_EQUAL:
1802 return 0xd;
1803
1804 case SLJIT_OVERFLOW:
1805 case SLJIT_UNORDERED_F64:
1806 return 0x6;
1807
1808 case SLJIT_NOT_OVERFLOW:
1809 case SLJIT_ORDERED_F64:
1810 return 0x7;
1811
1812 default: /* SLJIT_JUMP */
1813 SLJIT_UNREACHABLE();
1814 return 0xe;
1815 }
1816 }
1817
sljit_emit_label(struct sljit_compiler * compiler)1818 SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler)
1819 {
1820 struct sljit_label *label;
1821
1822 CHECK_ERROR_PTR();
1823 CHECK_PTR(check_sljit_emit_label(compiler));
1824
1825 if (compiler->last_label && compiler->last_label->size == compiler->size)
1826 return compiler->last_label;
1827
1828 label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label));
1829 PTR_FAIL_IF(!label);
1830 set_label(label, compiler);
1831 return label;
1832 }
1833
sljit_emit_jump(struct sljit_compiler * compiler,sljit_s32 type)1834 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, sljit_s32 type)
1835 {
1836 struct sljit_jump *jump;
1837 sljit_ins cc;
1838
1839 CHECK_ERROR_PTR();
1840 CHECK_PTR(check_sljit_emit_jump(compiler, type));
1841
1842 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1843 PTR_FAIL_IF(!jump);
1844 set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1845 type &= 0xff;
1846
1847 PTR_FAIL_IF(emit_imm32_const(compiler, TMP_REG1, 0));
1848 if (type < SLJIT_JUMP) {
1849 jump->flags |= IS_COND;
1850 cc = get_cc(type);
1851 jump->flags |= cc << 8;
1852 PTR_FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8));
1853 }
1854
1855 jump->addr = compiler->size;
1856 if (type <= SLJIT_JUMP)
1857 PTR_FAIL_IF(push_inst16(compiler, BX | RN3(TMP_REG1)));
1858 else {
1859 jump->flags |= IS_BL;
1860 PTR_FAIL_IF(push_inst16(compiler, BLX | RN3(TMP_REG1)));
1861 }
1862
1863 return jump;
1864 }
1865
1866 #ifdef __SOFTFP__
1867
softfloat_call_with_args(struct sljit_compiler * compiler,sljit_s32 arg_types,sljit_s32 * src)1868 static sljit_s32 softfloat_call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types, sljit_s32 *src)
1869 {
1870 sljit_s32 stack_offset = 0;
1871 sljit_s32 arg_count = 0;
1872 sljit_s32 word_arg_offset = 0;
1873 sljit_s32 float_arg_count = 0;
1874 sljit_s32 types = 0;
1875 sljit_s32 src_offset = 4 * sizeof(sljit_sw);
1876 sljit_u8 offsets[4];
1877
1878 if (src && FAST_IS_REG(*src))
1879 src_offset = reg_map[*src] * sizeof(sljit_sw);
1880
1881 arg_types >>= SLJIT_DEF_SHIFT;
1882
1883 while (arg_types) {
1884 types = (types << SLJIT_DEF_SHIFT) | (arg_types & SLJIT_DEF_MASK);
1885
1886 switch (arg_types & SLJIT_DEF_MASK) {
1887 case SLJIT_ARG_TYPE_F32:
1888 offsets[arg_count] = (sljit_u8)stack_offset;
1889 stack_offset += sizeof(sljit_f32);
1890 arg_count++;
1891 float_arg_count++;
1892 break;
1893 case SLJIT_ARG_TYPE_F64:
1894 if (stack_offset & 0x7)
1895 stack_offset += sizeof(sljit_sw);
1896 offsets[arg_count] = (sljit_u8)stack_offset;
1897 stack_offset += sizeof(sljit_f64);
1898 arg_count++;
1899 float_arg_count++;
1900 break;
1901 default:
1902 offsets[arg_count] = (sljit_u8)stack_offset;
1903 stack_offset += sizeof(sljit_sw);
1904 arg_count++;
1905 word_arg_offset += sizeof(sljit_sw);
1906 break;
1907 }
1908
1909 arg_types >>= SLJIT_DEF_SHIFT;
1910 }
1911
1912 if (stack_offset > 16)
1913 FAIL_IF(push_inst16(compiler, SUB_SP | (((stack_offset - 16) + 0x7) & ~0x7) >> 2));
1914
1915 SLJIT_ASSERT(reg_map[TMP_REG1] == 12);
1916
1917 /* Process arguments in reversed direction. */
1918 while (types) {
1919 switch (types & SLJIT_DEF_MASK) {
1920 case SLJIT_ARG_TYPE_F32:
1921 arg_count--;
1922 float_arg_count--;
1923 stack_offset = offsets[arg_count];
1924
1925 if (stack_offset < 16) {
1926 if (src_offset == stack_offset) {
1927 FAIL_IF(push_inst16(compiler, MOV | (src_offset << 1) | 4 | (1 << 7)));
1928 *src = TMP_REG1;
1929 }
1930 FAIL_IF(push_inst32(compiler, VMOV | 0x100000 | (float_arg_count << 16) | (stack_offset << 10)));
1931 } else
1932 FAIL_IF(push_inst32(compiler, VSTR_F32 | 0x800000 | RN4(SLJIT_SP) | (float_arg_count << 12) | ((stack_offset - 16) >> 2)));
1933 break;
1934 case SLJIT_ARG_TYPE_F64:
1935 arg_count--;
1936 float_arg_count--;
1937 stack_offset = offsets[arg_count];
1938
1939 SLJIT_ASSERT((stack_offset & 0x7) == 0);
1940
1941 if (stack_offset < 16) {
1942 if (src_offset == stack_offset || src_offset == stack_offset + sizeof(sljit_sw)) {
1943 FAIL_IF(push_inst16(compiler, MOV | (src_offset << 1) | 4 | (1 << 7)));
1944 *src = TMP_REG1;
1945 }
1946 FAIL_IF(push_inst32(compiler, VMOV2 | 0x100000 | (stack_offset << 10) | ((stack_offset + sizeof(sljit_sw)) << 14) | float_arg_count));
1947 } else
1948 FAIL_IF(push_inst32(compiler, VSTR_F32 | 0x800100 | RN4(SLJIT_SP) | (float_arg_count << 12) | ((stack_offset - 16) >> 2)));
1949 break;
1950 default:
1951 arg_count--;
1952 word_arg_offset -= sizeof(sljit_sw);
1953 stack_offset = offsets[arg_count];
1954
1955 SLJIT_ASSERT(stack_offset >= word_arg_offset);
1956
1957 if (stack_offset != word_arg_offset) {
1958 if (stack_offset < 16) {
1959 if (src_offset == stack_offset) {
1960 FAIL_IF(push_inst16(compiler, MOV | (src_offset << 1) | 4 | (1 << 7)));
1961 *src = TMP_REG1;
1962 }
1963 else if (src_offset == word_arg_offset) {
1964 *src = 1 + (stack_offset >> 2);
1965 src_offset = stack_offset;
1966 }
1967 FAIL_IF(push_inst16(compiler, MOV | (stack_offset >> 2) | (word_arg_offset << 1)));
1968 } else
1969 FAIL_IF(push_inst16(compiler, STR_SP | (word_arg_offset << 6) | ((stack_offset - 16) >> 2)));
1970 }
1971 break;
1972 }
1973
1974 types >>= SLJIT_DEF_SHIFT;
1975 }
1976
1977 return SLJIT_SUCCESS;
1978 }
1979
softfloat_post_call_with_args(struct sljit_compiler * compiler,sljit_s32 arg_types)1980 static sljit_s32 softfloat_post_call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types)
1981 {
1982 sljit_s32 stack_size = 0;
1983
1984 if ((arg_types & SLJIT_DEF_MASK) == SLJIT_ARG_TYPE_F32)
1985 FAIL_IF(push_inst32(compiler, VMOV | (0 << 16) | (0 << 12)));
1986 if ((arg_types & SLJIT_DEF_MASK) == SLJIT_ARG_TYPE_F64)
1987 FAIL_IF(push_inst32(compiler, VMOV2 | (1 << 16) | (0 << 12) | 0));
1988
1989 arg_types >>= SLJIT_DEF_SHIFT;
1990
1991 while (arg_types) {
1992 switch (arg_types & SLJIT_DEF_MASK) {
1993 case SLJIT_ARG_TYPE_F32:
1994 stack_size += sizeof(sljit_f32);
1995 break;
1996 case SLJIT_ARG_TYPE_F64:
1997 if (stack_size & 0x7)
1998 stack_size += sizeof(sljit_sw);
1999 stack_size += sizeof(sljit_f64);
2000 break;
2001 default:
2002 stack_size += sizeof(sljit_sw);
2003 break;
2004 }
2005
2006 arg_types >>= SLJIT_DEF_SHIFT;
2007 }
2008
2009 if (stack_size <= 16)
2010 return SLJIT_SUCCESS;
2011
2012 return push_inst16(compiler, ADD_SP | ((((stack_size - 16) + 0x7) & ~0x7) >> 2));
2013 }
2014
2015 #else
2016
hardfloat_call_with_args(struct sljit_compiler * compiler,sljit_s32 arg_types)2017 static sljit_s32 hardfloat_call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types)
2018 {
2019 sljit_u32 remap = 0;
2020 sljit_u32 offset = 0;
2021 sljit_u32 new_offset, mask;
2022
2023 /* Remove return value. */
2024 arg_types >>= SLJIT_DEF_SHIFT;
2025
2026 while (arg_types) {
2027 if ((arg_types & SLJIT_DEF_MASK) == SLJIT_ARG_TYPE_F32) {
2028 new_offset = 0;
2029 mask = 1;
2030
2031 while (remap & mask) {
2032 new_offset++;
2033 mask <<= 1;
2034 }
2035 remap |= mask;
2036
2037 if (offset != new_offset)
2038 FAIL_IF(push_inst32(compiler, VMOV_F32 | DD4((new_offset >> 1) + 1)
2039 | ((new_offset & 0x1) ? 0x400000 : 0) | DM4((offset >> 1) + 1)));
2040
2041 offset += 2;
2042 }
2043 else if ((arg_types & SLJIT_DEF_MASK) == SLJIT_ARG_TYPE_F64) {
2044 new_offset = 0;
2045 mask = 3;
2046
2047 while (remap & mask) {
2048 new_offset += 2;
2049 mask <<= 2;
2050 }
2051 remap |= mask;
2052
2053 if (offset != new_offset)
2054 FAIL_IF(push_inst32(compiler, VMOV_F32 | SLJIT_F32_OP | DD4((new_offset >> 1) + 1) | DM4((offset >> 1) + 1)));
2055
2056 offset += 2;
2057 }
2058 arg_types >>= SLJIT_DEF_SHIFT;
2059 }
2060
2061 return SLJIT_SUCCESS;
2062 }
2063
2064 #endif
2065
sljit_emit_call(struct sljit_compiler * compiler,sljit_s32 type,sljit_s32 arg_types)2066 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_call(struct sljit_compiler *compiler, sljit_s32 type,
2067 sljit_s32 arg_types)
2068 {
2069 #ifdef __SOFTFP__
2070 struct sljit_jump *jump;
2071 #endif
2072
2073 CHECK_ERROR_PTR();
2074 CHECK_PTR(check_sljit_emit_call(compiler, type, arg_types));
2075
2076 #ifdef __SOFTFP__
2077 PTR_FAIL_IF(softfloat_call_with_args(compiler, arg_types, NULL));
2078
2079 #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \
2080 || (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS)
2081 compiler->skip_checks = 1;
2082 #endif
2083
2084 jump = sljit_emit_jump(compiler, type);
2085 PTR_FAIL_IF(jump == NULL);
2086
2087 PTR_FAIL_IF(softfloat_post_call_with_args(compiler, arg_types));
2088 return jump;
2089 #else
2090 PTR_FAIL_IF(hardfloat_call_with_args(compiler, arg_types));
2091
2092 #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \
2093 || (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS)
2094 compiler->skip_checks = 1;
2095 #endif
2096
2097 return sljit_emit_jump(compiler, type);
2098 #endif
2099 }
2100
sljit_emit_ijump(struct sljit_compiler * compiler,sljit_s32 type,sljit_s32 src,sljit_sw srcw)2101 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_ijump(struct sljit_compiler *compiler, sljit_s32 type, sljit_s32 src, sljit_sw srcw)
2102 {
2103 struct sljit_jump *jump;
2104
2105 CHECK_ERROR();
2106 CHECK(check_sljit_emit_ijump(compiler, type, src, srcw));
2107 ADJUST_LOCAL_OFFSET(src, srcw);
2108
2109 SLJIT_ASSERT(reg_map[TMP_REG1] != 14);
2110
2111 if (!(src & SLJIT_IMM)) {
2112 if (FAST_IS_REG(src)) {
2113 SLJIT_ASSERT(reg_map[src] != 14);
2114 return push_inst16(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RN3(src));
2115 }
2116
2117 FAIL_IF(emit_op_mem(compiler, WORD_SIZE, type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, src, srcw, TMP_REG1));
2118 if (type >= SLJIT_FAST_CALL)
2119 return push_inst16(compiler, BLX | RN3(TMP_REG1));
2120 }
2121
2122 /* These jumps are converted to jump/call instructions when possible. */
2123 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
2124 FAIL_IF(!jump);
2125 set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_BL : 0));
2126 jump->u.target = srcw;
2127
2128 FAIL_IF(emit_imm32_const(compiler, TMP_REG1, 0));
2129 jump->addr = compiler->size;
2130 return push_inst16(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RN3(TMP_REG1));
2131 }
2132
sljit_emit_icall(struct sljit_compiler * compiler,sljit_s32 type,sljit_s32 arg_types,sljit_s32 src,sljit_sw srcw)2133 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_icall(struct sljit_compiler *compiler, sljit_s32 type,
2134 sljit_s32 arg_types,
2135 sljit_s32 src, sljit_sw srcw)
2136 {
2137 CHECK_ERROR();
2138 CHECK(check_sljit_emit_icall(compiler, type, arg_types, src, srcw));
2139
2140 #ifdef __SOFTFP__
2141 if (src & SLJIT_MEM) {
2142 FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG1, src, srcw, TMP_REG1));
2143 src = TMP_REG1;
2144 }
2145
2146 FAIL_IF(softfloat_call_with_args(compiler, arg_types, &src));
2147
2148 #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \
2149 || (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS)
2150 compiler->skip_checks = 1;
2151 #endif
2152
2153 FAIL_IF(sljit_emit_ijump(compiler, type, src, srcw));
2154
2155 return softfloat_post_call_with_args(compiler, arg_types);
2156 #else /* !__SOFTFP__ */
2157 FAIL_IF(hardfloat_call_with_args(compiler, arg_types));
2158
2159 #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \
2160 || (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS)
2161 compiler->skip_checks = 1;
2162 #endif
2163
2164 return sljit_emit_ijump(compiler, type, src, srcw);
2165 #endif /* __SOFTFP__ */
2166 }
2167
sljit_emit_op_flags(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 dst,sljit_sw dstw,sljit_s32 type)2168 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_flags(struct sljit_compiler *compiler, sljit_s32 op,
2169 sljit_s32 dst, sljit_sw dstw,
2170 sljit_s32 type)
2171 {
2172 sljit_s32 dst_r, flags = GET_ALL_FLAGS(op);
2173 sljit_ins cc;
2174
2175 CHECK_ERROR();
2176 CHECK(check_sljit_emit_op_flags(compiler, op, dst, dstw, type));
2177 ADJUST_LOCAL_OFFSET(dst, dstw);
2178
2179 op = GET_OPCODE(op);
2180 cc = get_cc(type & 0xff);
2181 dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1;
2182
2183 if (op < SLJIT_ADD) {
2184 FAIL_IF(push_inst16(compiler, IT | (cc << 4) | (((cc & 0x1) ^ 0x1) << 3) | 0x4));
2185 if (reg_map[dst_r] > 7) {
2186 FAIL_IF(push_inst32(compiler, MOV_WI | RD4(dst_r) | 1));
2187 FAIL_IF(push_inst32(compiler, MOV_WI | RD4(dst_r) | 0));
2188 } else {
2189 /* The movsi (immediate) instruction does not set flags in IT block. */
2190 FAIL_IF(push_inst16(compiler, MOVSI | RDN3(dst_r) | 1));
2191 FAIL_IF(push_inst16(compiler, MOVSI | RDN3(dst_r) | 0));
2192 }
2193 if (!(dst & SLJIT_MEM))
2194 return SLJIT_SUCCESS;
2195 return emit_op_mem(compiler, WORD_SIZE | STORE, TMP_REG1, dst, dstw, TMP_REG2);
2196 }
2197
2198 if (dst & SLJIT_MEM)
2199 FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG1, dst, dstw, TMP_REG2));
2200
2201 if (op == SLJIT_AND) {
2202 FAIL_IF(push_inst16(compiler, IT | (cc << 4) | (((cc & 0x1) ^ 0x1) << 3) | 0x4));
2203 FAIL_IF(push_inst32(compiler, ANDI | RN4(dst_r) | RD4(dst_r) | 1));
2204 FAIL_IF(push_inst32(compiler, ANDI | RN4(dst_r) | RD4(dst_r) | 0));
2205 }
2206 else {
2207 FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8));
2208 FAIL_IF(push_inst32(compiler, ((op == SLJIT_OR) ? ORRI : EORI) | RN4(dst_r) | RD4(dst_r) | 1));
2209 }
2210
2211 if (dst & SLJIT_MEM)
2212 FAIL_IF(emit_op_mem(compiler, WORD_SIZE | STORE, TMP_REG1, dst, dstw, TMP_REG2));
2213
2214 if (!(flags & SLJIT_SET_Z))
2215 return SLJIT_SUCCESS;
2216
2217 /* The condition must always be set, even if the ORR/EORI is not executed above. */
2218 return push_inst32(compiler, MOV_W | SET_FLAGS | RD4(TMP_REG1) | RM4(dst_r));
2219 }
2220
sljit_emit_cmov(struct sljit_compiler * compiler,sljit_s32 type,sljit_s32 dst_reg,sljit_s32 src,sljit_sw srcw)2221 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_cmov(struct sljit_compiler *compiler, sljit_s32 type,
2222 sljit_s32 dst_reg,
2223 sljit_s32 src, sljit_sw srcw)
2224 {
2225 sljit_uw cc, tmp;
2226
2227 CHECK_ERROR();
2228 CHECK(check_sljit_emit_cmov(compiler, type, dst_reg, src, srcw));
2229
2230 dst_reg &= ~SLJIT_I32_OP;
2231
2232 cc = get_cc(type & 0xff);
2233
2234 if (!(src & SLJIT_IMM)) {
2235 FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8));
2236 return push_inst16(compiler, MOV | SET_REGS44(dst_reg, src));
2237 }
2238
2239 tmp = (sljit_uw) srcw;
2240
2241 if (tmp < 0x10000) {
2242 /* set low 16 bits, set hi 16 bits to 0. */
2243 FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8));
2244 return push_inst32(compiler, MOVW | RD4(dst_reg)
2245 | COPY_BITS(tmp, 12, 16, 4) | COPY_BITS(tmp, 11, 26, 1) | COPY_BITS(tmp, 8, 12, 3) | (tmp & 0xff));
2246 }
2247
2248 tmp = get_imm(srcw);
2249 if (tmp != INVALID_IMM) {
2250 FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8));
2251 return push_inst32(compiler, MOV_WI | RD4(dst_reg) | tmp);
2252 }
2253
2254 tmp = get_imm(~srcw);
2255 if (tmp != INVALID_IMM) {
2256 FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8));
2257 return push_inst32(compiler, MVN_WI | RD4(dst_reg) | tmp);
2258 }
2259
2260 FAIL_IF(push_inst16(compiler, IT | (cc << 4) | ((cc & 0x1) << 3) | 0x4));
2261
2262 tmp = (sljit_uw) srcw;
2263 FAIL_IF(push_inst32(compiler, MOVW | RD4(dst_reg)
2264 | COPY_BITS(tmp, 12, 16, 4) | COPY_BITS(tmp, 11, 26, 1) | COPY_BITS(tmp, 8, 12, 3) | (tmp & 0xff)));
2265 return push_inst32(compiler, MOVT | RD4(dst_reg)
2266 | COPY_BITS(tmp, 12 + 16, 16, 4) | COPY_BITS(tmp, 11 + 16, 26, 1) | COPY_BITS(tmp, 8 + 16, 12, 3) | ((tmp & 0xff0000) >> 16));
2267 }
2268
sljit_emit_mem(struct sljit_compiler * compiler,sljit_s32 type,sljit_s32 reg,sljit_s32 mem,sljit_sw memw)2269 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_mem(struct sljit_compiler *compiler, sljit_s32 type,
2270 sljit_s32 reg,
2271 sljit_s32 mem, sljit_sw memw)
2272 {
2273 sljit_s32 flags;
2274 sljit_ins inst;
2275
2276 CHECK_ERROR();
2277 CHECK(check_sljit_emit_mem(compiler, type, reg, mem, memw));
2278
2279 if ((mem & OFFS_REG_MASK) || (memw > 255 || memw < -255))
2280 return SLJIT_ERR_UNSUPPORTED;
2281
2282 if (type & SLJIT_MEM_SUPP)
2283 return SLJIT_SUCCESS;
2284
2285 switch (type & 0xff) {
2286 case SLJIT_MOV:
2287 case SLJIT_MOV_U32:
2288 case SLJIT_MOV_S32:
2289 case SLJIT_MOV_P:
2290 flags = WORD_SIZE;
2291 break;
2292 case SLJIT_MOV_U8:
2293 flags = BYTE_SIZE;
2294 break;
2295 case SLJIT_MOV_S8:
2296 flags = BYTE_SIZE | SIGNED;
2297 break;
2298 case SLJIT_MOV_U16:
2299 flags = HALF_SIZE;
2300 break;
2301 case SLJIT_MOV_S16:
2302 flags = HALF_SIZE | SIGNED;
2303 break;
2304 default:
2305 SLJIT_UNREACHABLE();
2306 flags = WORD_SIZE;
2307 break;
2308 }
2309
2310 if (type & SLJIT_MEM_STORE)
2311 flags |= STORE;
2312
2313 inst = sljit_mem32[flags] | 0x900;
2314
2315 if (type & SLJIT_MEM_PRE)
2316 inst |= 0x400;
2317
2318 if (memw >= 0)
2319 inst |= 0x200;
2320 else
2321 memw = -memw;
2322
2323 return push_inst32(compiler, inst | RT4(reg) | RN4(mem & REG_MASK) | memw);
2324 }
2325
sljit_emit_const(struct sljit_compiler * compiler,sljit_s32 dst,sljit_sw dstw,sljit_sw init_value)2326 SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw, sljit_sw init_value)
2327 {
2328 struct sljit_const *const_;
2329 sljit_s32 dst_r;
2330
2331 CHECK_ERROR_PTR();
2332 CHECK_PTR(check_sljit_emit_const(compiler, dst, dstw, init_value));
2333 ADJUST_LOCAL_OFFSET(dst, dstw);
2334
2335 const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const));
2336 PTR_FAIL_IF(!const_);
2337 set_const(const_, compiler);
2338
2339 dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1;
2340 PTR_FAIL_IF(emit_imm32_const(compiler, dst_r, init_value));
2341
2342 if (dst & SLJIT_MEM)
2343 PTR_FAIL_IF(emit_op_mem(compiler, WORD_SIZE | STORE, dst_r, dst, dstw, TMP_REG2));
2344 return const_;
2345 }
2346
sljit_emit_put_label(struct sljit_compiler * compiler,sljit_s32 dst,sljit_sw dstw)2347 SLJIT_API_FUNC_ATTRIBUTE struct sljit_put_label* sljit_emit_put_label(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw)
2348 {
2349 struct sljit_put_label *put_label;
2350 sljit_s32 dst_r;
2351
2352 CHECK_ERROR_PTR();
2353 CHECK_PTR(check_sljit_emit_put_label(compiler, dst, dstw));
2354 ADJUST_LOCAL_OFFSET(dst, dstw);
2355
2356 put_label = (struct sljit_put_label*)ensure_abuf(compiler, sizeof(struct sljit_put_label));
2357 PTR_FAIL_IF(!put_label);
2358 set_put_label(put_label, compiler, 0);
2359
2360 dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1;
2361 PTR_FAIL_IF(emit_imm32_const(compiler, dst_r, 0));
2362
2363 if (dst & SLJIT_MEM)
2364 PTR_FAIL_IF(emit_op_mem(compiler, WORD_SIZE | STORE, dst_r, dst, dstw, TMP_REG2));
2365 return put_label;
2366 }
2367
sljit_set_jump_addr(sljit_uw addr,sljit_uw new_target,sljit_sw executable_offset)2368 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_target, sljit_sw executable_offset)
2369 {
2370 sljit_u16 *inst = (sljit_u16*)addr;
2371 SLJIT_UNUSED_ARG(executable_offset);
2372
2373 SLJIT_UPDATE_WX_FLAGS(inst, inst + 4, 0);
2374 modify_imm32_const(inst, new_target);
2375 SLJIT_UPDATE_WX_FLAGS(inst, inst + 4, 1);
2376 inst = (sljit_u16 *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
2377 SLJIT_CACHE_FLUSH(inst, inst + 4);
2378 }
2379
sljit_set_const(sljit_uw addr,sljit_sw new_constant,sljit_sw executable_offset)2380 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant, sljit_sw executable_offset)
2381 {
2382 sljit_set_jump_addr(addr, new_constant, executable_offset);
2383 }
2384