/[pcre]/code/branches/pcre16/sljit/sljitNativeARM_Thumb2.c
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Contents of /code/branches/pcre16/sljit/sljitNativeARM_Thumb2.c

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Revision 781 - (show annotations) (download)
Sat Dec 3 07:58:30 2011 UTC (2 years, 4 months ago) by zherczeg
File MIME type: text/plain
File size: 55926 byte(s)
renaming utf8 to utf, JIT compiler update, disallowing invalid utf chars
1 /*
2 * Stack-less Just-In-Time compiler
3 *
4 * Copyright 2009-2010 Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without modification, are
7 * permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice, this list of
10 * conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
13 * of conditions and the following disclaimer in the documentation and/or other materials
14 * provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
19 * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
21 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
22 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 SLJIT_API_FUNC_ATTRIBUTE SLJIT_CONST char* sljit_get_platform_name()
28 {
29 return "arm-thumb2";
30 }
31
32 /* Last register + 1. */
33 #define TMP_REG1 (SLJIT_NO_REGISTERS + 1)
34 #define TMP_REG2 (SLJIT_NO_REGISTERS + 2)
35 #define TMP_REG3 (SLJIT_NO_REGISTERS + 3)
36 #define TMP_PC (SLJIT_NO_REGISTERS + 4)
37
38 #define TMP_FREG1 (SLJIT_FLOAT_REG4 + 1)
39 #define TMP_FREG2 (SLJIT_FLOAT_REG4 + 2)
40
41 /* See sljit_emit_enter if you want to change them. */
42 static SLJIT_CONST sljit_ub reg_map[SLJIT_NO_REGISTERS + 5] = {
43 0, 0, 1, 2, 12, 5, 6, 7, 8, 10, 11, 13, 3, 4, 14, 15
44 };
45
46 #define COPY_BITS(src, from, to, bits) \
47 ((from >= to ? (src >> (from - to)) : (src << (to - from))) & (((1 << bits) - 1) << to))
48
49 /* Thumb16 encodings. */
50 #define RD3(rd) (reg_map[rd])
51 #define RN3(rn) (reg_map[rn] << 3)
52 #define RM3(rm) (reg_map[rm] << 6)
53 #define RDN3(rdn) (reg_map[rdn] << 8)
54 #define IMM3(imm) (imm << 6)
55 #define IMM8(imm) (imm)
56
57 /* Thumb16 helpers. */
58 #define SET_REGS44(rd, rn) \
59 ((reg_map[rn] << 3) | (reg_map[rd] & 0x7) | ((reg_map[rd] & 0x8) << 4))
60 #define IS_2_LO_REGS(reg1, reg2) \
61 (reg_map[reg1] <= 7 && reg_map[reg2] <= 7)
62 #define IS_3_LO_REGS(reg1, reg2, reg3) \
63 (reg_map[reg1] <= 7 && reg_map[reg2] <= 7 && reg_map[reg3] <= 7)
64
65 /* Thumb32 encodings. */
66 #define RD4(rd) (reg_map[rd] << 8)
67 #define RN4(rn) (reg_map[rn] << 16)
68 #define RM4(rm) (reg_map[rm])
69 #define RT4(rt) (reg_map[rt] << 12)
70 #define DD4(dd) ((dd) << 12)
71 #define DN4(dn) ((dn) << 16)
72 #define DM4(dm) (dm)
73 #define IMM5(imm) \
74 (COPY_BITS(imm, 2, 12, 3) | ((imm & 0x3) << 6))
75 #define IMM12(imm) \
76 (COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff))
77
78 typedef sljit_ui sljit_ins;
79
80 /* --------------------------------------------------------------------- */
81 /* Instrucion forms */
82 /* --------------------------------------------------------------------- */
83
84 /* dot '.' changed to _
85 I immediate form (possibly followed by number of immediate bits). */
86 #define ADCI 0xf1400000
87 #define ADCS 0x4140
88 #define ADC_W 0xeb400000
89 #define ADD 0x4400
90 #define ADDS 0x1800
91 #define ADDSI3 0x1c00
92 #define ADDSI8 0x3000
93 #define ADD_W 0xeb000000
94 #define ADDWI 0xf2000000
95 #define ADD_SP 0xb000
96 #define ADD_W 0xeb000000
97 #define ADD_WI 0xf1000000
98 #define ANDI 0xf0000000
99 #define ANDS 0x4000
100 #define AND_W 0xea000000
101 #define ASRS 0x4100
102 #define ASRSI 0x1000
103 #define ASR_W 0xfa40f000
104 #define ASR_WI 0xea4f0020
105 #define BICI 0xf0200000
106 #define BKPT 0xbe00
107 #define BLX 0x4780
108 #define BX 0x4700
109 #define CLZ 0xfab0f080
110 #define CMPI 0x2800
111 #define CMP_W 0xebb00f00
112 #define EORI 0xf0800000
113 #define EORS 0x4040
114 #define EOR_W 0xea800000
115 #define IT 0xbf00
116 #define LSLS 0x4080
117 #define LSLSI 0x0000
118 #define LSL_W 0xfa00f000
119 #define LSL_WI 0xea4f0000
120 #define LSRS 0x40c0
121 #define LSRSI 0x0800
122 #define LSR_W 0xfa20f000
123 #define LSR_WI 0xea4f0010
124 #define MOV 0x4600
125 #define MOVSI 0x2000
126 #define MOVT 0xf2c00000
127 #define MOVW 0xf2400000
128 #define MOV_WI 0xf04f0000
129 #define MUL 0xfb00f000
130 #define MVNS 0x43c0
131 #define MVN_W 0xea6f0000
132 #define MVN_WI 0xf06f0000
133 #define NOP 0xbf00
134 #define ORNI 0xf0600000
135 #define ORRI 0xf0400000
136 #define ORRS 0x4300
137 #define ORR_W 0xea400000
138 #define POP 0xbd00
139 #define POP_W 0xe8bd0000
140 #define PUSH 0xb500
141 #define PUSH_W 0xe92d0000
142 #define RSB_WI 0xf1c00000
143 #define RSBSI 0x4240
144 #define SBCI 0xf1600000
145 #define SBCS 0x4180
146 #define SBC_W 0xeb600000
147 #define SMULL 0xfb800000
148 #define STR_SP 0x9000
149 #define SUBS 0x1a00
150 #define SUBSI3 0x1e00
151 #define SUBSI8 0x3800
152 #define SUB_W 0xeba00000
153 #define SUBWI 0xf2a00000
154 #define SUB_SP 0xb080
155 #define SUB_WI 0xf1a00000
156 #define SXTB 0xb240
157 #define SXTB_W 0xfa4ff080
158 #define SXTH 0xb200
159 #define SXTH_W 0xfa0ff080
160 #define TST 0x4200
161 #define UXTB 0xb2c0
162 #define UXTB_W 0xfa5ff080
163 #define UXTH 0xb280
164 #define UXTH_W 0xfa1ff080
165 #define VABS_F64 0xeeb00bc0
166 #define VADD_F64 0xee300b00
167 #define VCMP_F64 0xeeb40b40
168 #define VDIV_F64 0xee800b00
169 #define VMOV_F64 0xeeb00b40
170 #define VMRS 0xeef1fa10
171 #define VMUL_F64 0xee200b00
172 #define VNEG_F64 0xeeb10b40
173 #define VSTR 0xed000b00
174 #define VSUB_F64 0xee300b40
175
176 static int push_inst16(struct sljit_compiler *compiler, sljit_ins inst)
177 {
178 sljit_uh *ptr;
179 SLJIT_ASSERT(!(inst & 0xffff0000));
180
181 ptr = (sljit_uh*)ensure_buf(compiler, sizeof(sljit_uh));
182 FAIL_IF(!ptr);
183 *ptr = inst;
184 compiler->size++;
185 return SLJIT_SUCCESS;
186 }
187
188 static int push_inst32(struct sljit_compiler *compiler, sljit_ins inst)
189 {
190 sljit_uh *ptr = (sljit_uh*)ensure_buf(compiler, sizeof(sljit_ins));
191 FAIL_IF(!ptr);
192 *ptr++ = inst >> 16;
193 *ptr = inst;
194 compiler->size += 2;
195 return SLJIT_SUCCESS;
196 }
197
198 static SLJIT_INLINE int emit_imm32_const(struct sljit_compiler *compiler, int dst, sljit_uw imm)
199 {
200 FAIL_IF(push_inst32(compiler, MOVW | RD4(dst) |
201 COPY_BITS(imm, 12, 16, 4) | COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff)));
202 return push_inst32(compiler, MOVT | RD4(dst) |
203 COPY_BITS(imm, 12 + 16, 16, 4) | COPY_BITS(imm, 11 + 16, 26, 1) | COPY_BITS(imm, 8 + 16, 12, 3) | ((imm & 0xff0000) >> 16));
204 }
205
206 static SLJIT_INLINE void modify_imm32_const(sljit_uh* inst, sljit_uw new_imm)
207 {
208 int dst = inst[1] & 0x0f00;
209 SLJIT_ASSERT(((inst[0] & 0xfbf0) == (MOVW >> 16)) && ((inst[2] & 0xfbf0) == (MOVT >> 16)) && dst == (inst[3] & 0x0f00));
210 inst[0] = (MOVW >> 16) | COPY_BITS(new_imm, 12, 0, 4) | COPY_BITS(new_imm, 11, 10, 1);
211 inst[1] = dst | COPY_BITS(new_imm, 8, 12, 3) | (new_imm & 0xff);
212 inst[2] = (MOVT >> 16) | COPY_BITS(new_imm, 12 + 16, 0, 4) | COPY_BITS(new_imm, 11 + 16, 10, 1);
213 inst[3] = dst | COPY_BITS(new_imm, 8 + 16, 12, 3) | ((new_imm & 0xff0000) >> 16);
214 }
215
216 static SLJIT_INLINE int detect_jump_type(struct sljit_jump *jump, sljit_uh *code_ptr, sljit_uh *code)
217 {
218 sljit_w diff;
219
220 if (jump->flags & SLJIT_REWRITABLE_JUMP)
221 return 0;
222
223 if (jump->flags & JUMP_ADDR) {
224 /* Branch to ARM code is not optimized yet. */
225 if (!(jump->u.target & 0x1))
226 return 0;
227 diff = ((sljit_w)jump->u.target - (sljit_w)(code_ptr + 2)) >> 1;
228 }
229 else {
230 SLJIT_ASSERT(jump->flags & JUMP_LABEL);
231 diff = ((sljit_w)(code + jump->u.label->size) - (sljit_w)(code_ptr + 2)) >> 1;
232 }
233
234 if (jump->flags & IS_CONDITIONAL) {
235 SLJIT_ASSERT(!(jump->flags & IS_BL));
236 if (diff <= 127 && diff >= -128) {
237 jump->flags |= B_TYPE1;
238 return 5;
239 }
240 if (diff <= 524287 && diff >= -524288) {
241 jump->flags |= B_TYPE2;
242 return 4;
243 }
244 /* +1 comes from the prefix IT instruction. */
245 diff--;
246 if (diff <= 8388607 && diff >= -8388608) {
247 jump->flags |= B_TYPE3;
248 return 3;
249 }
250 }
251 else if (jump->flags & IS_BL) {
252 if (diff <= 8388607 && diff >= -8388608) {
253 jump->flags |= BL_TYPE6;
254 return 3;
255 }
256 }
257 else {
258 if (diff <= 1023 && diff >= -1024) {
259 jump->flags |= B_TYPE4;
260 return 4;
261 }
262 if (diff <= 8388607 && diff >= -8388608) {
263 jump->flags |= B_TYPE5;
264 return 3;
265 }
266 }
267
268 return 0;
269 }
270
271 static SLJIT_INLINE void inline_set_jump_addr(sljit_uw addr, sljit_uw new_addr, int flush)
272 {
273 sljit_uh* inst = (sljit_uh*)addr;
274 modify_imm32_const(inst, new_addr);
275 if (flush) {
276 SLJIT_CACHE_FLUSH(inst, inst + 3);
277 }
278 }
279
280 static SLJIT_INLINE void set_jump_instruction(struct sljit_jump *jump)
281 {
282 int type = (jump->flags >> 4) & 0xf;
283 sljit_w diff;
284 sljit_uh *jump_inst;
285 int s, j1, j2;
286
287 if (SLJIT_UNLIKELY(type == 0)) {
288 inline_set_jump_addr(jump->addr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0);
289 return;
290 }
291
292 if (jump->flags & JUMP_ADDR) {
293 SLJIT_ASSERT(jump->u.target & 0x1);
294 diff = ((sljit_w)jump->u.target - (sljit_w)(jump->addr + 4)) >> 1;
295 }
296 else
297 diff = ((sljit_w)(jump->u.label->addr) - (sljit_w)(jump->addr + 4)) >> 1;
298 jump_inst = (sljit_uh*)jump->addr;
299
300 switch (type) {
301 case 1:
302 /* Encoding T1 of 'B' instruction */
303 SLJIT_ASSERT(diff <= 127 && diff >= -128 && (jump->flags & IS_CONDITIONAL));
304 jump_inst[0] = 0xd000 | (jump->flags & 0xf00) | (diff & 0xff);
305 return;
306 case 2:
307 /* Encoding T3 of 'B' instruction */
308 SLJIT_ASSERT(diff <= 524287 && diff >= -524288 && (jump->flags & IS_CONDITIONAL));
309 jump_inst[0] = 0xf000 | COPY_BITS(jump->flags, 8, 6, 4) | COPY_BITS(diff, 11, 0, 6) | COPY_BITS(diff, 19, 10, 1);
310 jump_inst[1] = 0x8000 | COPY_BITS(diff, 17, 13, 1) | COPY_BITS(diff, 18, 11, 1) | (diff & 0x7ff);
311 return;
312 case 3:
313 SLJIT_ASSERT(jump->flags & IS_CONDITIONAL);
314 *jump_inst++ = IT | ((jump->flags >> 4) & 0xf0) | 0x8;
315 diff--;
316 type = 5;
317 break;
318 case 4:
319 /* Encoding T2 of 'B' instruction */
320 SLJIT_ASSERT(diff <= 1023 && diff >= -1024 && !(jump->flags & IS_CONDITIONAL));
321 jump_inst[0] = 0xe000 | (diff & 0x7ff);
322 return;
323 }
324
325 SLJIT_ASSERT(diff <= 8388607 && diff >= -8388608);
326
327 /* Really complex instruction form for branches. */
328 s = (diff >> 23) & 0x1;
329 j1 = (~(diff >> 21) ^ s) & 0x1;
330 j2 = (~(diff >> 22) ^ s) & 0x1;
331 jump_inst[0] = 0xf000 | (s << 10) | COPY_BITS(diff, 11, 0, 10);
332 jump_inst[1] = (j1 << 13) | (j2 << 11) | (diff & 0x7ff);
333
334 /* The others have a common form. */
335 if (type == 5) /* Encoding T4 of 'B' instruction */
336 jump_inst[1] |= 0x9000;
337 else if (type == 6) /* Encoding T1 of 'BL' instruction */
338 jump_inst[1] |= 0xd000;
339 else
340 SLJIT_ASSERT_STOP();
341 }
342
343 SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler)
344 {
345 struct sljit_memory_fragment *buf;
346 sljit_uh *code;
347 sljit_uh *code_ptr;
348 sljit_uh *buf_ptr;
349 sljit_uh *buf_end;
350 sljit_uw half_count;
351
352 struct sljit_label *label;
353 struct sljit_jump *jump;
354 struct sljit_const *const_;
355
356 CHECK_ERROR_PTR();
357 check_sljit_generate_code(compiler);
358 reverse_buf(compiler);
359
360 code = (sljit_uh*)SLJIT_MALLOC_EXEC(compiler->size * sizeof(sljit_uh));
361 PTR_FAIL_WITH_EXEC_IF(code);
362 buf = compiler->buf;
363
364 code_ptr = code;
365 half_count = 0;
366 label = compiler->labels;
367 jump = compiler->jumps;
368 const_ = compiler->consts;
369
370 do {
371 buf_ptr = (sljit_uh*)buf->memory;
372 buf_end = buf_ptr + (buf->used_size >> 1);
373 do {
374 *code_ptr = *buf_ptr++;
375 /* These structures are ordered by their address. */
376 SLJIT_ASSERT(!label || label->size >= half_count);
377 SLJIT_ASSERT(!jump || jump->addr >= half_count);
378 SLJIT_ASSERT(!const_ || const_->addr >= half_count);
379 if (label && label->size == half_count) {
380 label->addr = ((sljit_uw)code_ptr) | 0x1;
381 label->size = code_ptr - code;
382 label = label->next;
383 }
384 if (jump && jump->addr == half_count) {
385 jump->addr = (sljit_uw)code_ptr - ((jump->flags & IS_CONDITIONAL) ? 10 : 8);
386 code_ptr -= detect_jump_type(jump, code_ptr, code);
387 jump = jump->next;
388 }
389 if (const_ && const_->addr == half_count) {
390 const_->addr = (sljit_uw)code_ptr;
391 const_ = const_->next;
392 }
393 code_ptr ++;
394 half_count ++;
395 } while (buf_ptr < buf_end);
396
397 buf = buf->next;
398 } while (buf);
399
400 if (label && label->size == half_count) {
401 label->addr = ((sljit_uw)code_ptr) | 0x1;
402 label->size = code_ptr - code;
403 label = label->next;
404 }
405
406 SLJIT_ASSERT(!label);
407 SLJIT_ASSERT(!jump);
408 SLJIT_ASSERT(!const_);
409 SLJIT_ASSERT(code_ptr - code <= (int)compiler->size);
410
411 jump = compiler->jumps;
412 while (jump) {
413 set_jump_instruction(jump);
414 jump = jump->next;
415 }
416
417 SLJIT_CACHE_FLUSH(code, code_ptr);
418 compiler->error = SLJIT_ERR_COMPILED;
419 compiler->executable_size = compiler->size * sizeof(sljit_uh);
420 /* Set thumb mode flag. */
421 return (void*)((sljit_uw)code | 0x1);
422 }
423
424 #define INVALID_IMM 0x80000000
425 static sljit_uw get_imm(sljit_uw imm)
426 {
427 /* Thumb immediate form. */
428 int counter;
429
430 if (imm <= 0xff)
431 return imm;
432
433 if ((imm & 0xffff) == (imm >> 16)) {
434 /* Some special cases. */
435 if (!(imm & 0xff00))
436 return (1 << 12) | (imm & 0xff);
437 if (!(imm & 0xff))
438 return (2 << 12) | ((imm >> 8) & 0xff);
439 if ((imm & 0xff00) == ((imm & 0xff) << 8))
440 return (3 << 12) | (imm & 0xff);
441 }
442
443 /* Assembly optimization: count leading zeroes? */
444 counter = 8;
445 if (!(imm & 0xffff0000)) {
446 counter += 16;
447 imm <<= 16;
448 }
449 if (!(imm & 0xff000000)) {
450 counter += 8;
451 imm <<= 8;
452 }
453 if (!(imm & 0xf0000000)) {
454 counter += 4;
455 imm <<= 4;
456 }
457 if (!(imm & 0xc0000000)) {
458 counter += 2;
459 imm <<= 2;
460 }
461 if (!(imm & 0x80000000)) {
462 counter += 1;
463 imm <<= 1;
464 }
465 /* Since imm >= 128, this must be true. */
466 SLJIT_ASSERT(counter <= 31);
467
468 if (imm & 0x00ffffff)
469 return INVALID_IMM; /* Cannot be encoded. */
470
471 return ((imm >> 24) & 0x7f) | COPY_BITS(counter, 4, 26, 1) | COPY_BITS(counter, 1, 12, 3) | COPY_BITS(counter, 0, 7, 1);
472 }
473
474 static int load_immediate(struct sljit_compiler *compiler, int dst, sljit_uw imm)
475 {
476 sljit_uw tmp;
477
478 if (imm >= 0x10000) {
479 tmp = get_imm(imm);
480 if (tmp != INVALID_IMM)
481 return push_inst32(compiler, MOV_WI | RD4(dst) | tmp);
482 tmp = get_imm(~imm);
483 if (tmp != INVALID_IMM)
484 return push_inst32(compiler, MVN_WI | RD4(dst) | tmp);
485 }
486
487 /* set low 16 bits, set hi 16 bits to 0. */
488 FAIL_IF(push_inst32(compiler, MOVW | RD4(dst) |
489 COPY_BITS(imm, 12, 16, 4) | COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff)));
490
491 /* set hi 16 bit if needed. */
492 if (imm >= 0x10000)
493 return push_inst32(compiler, MOVT | RD4(dst) |
494 COPY_BITS(imm, 12 + 16, 16, 4) | COPY_BITS(imm, 11 + 16, 26, 1) | COPY_BITS(imm, 8 + 16, 12, 3) | ((imm & 0xff0000) >> 16));
495 return SLJIT_SUCCESS;
496 }
497
498 #define ARG1_IMM 0x0010000
499 #define ARG2_IMM 0x0020000
500 #define KEEP_FLAGS 0x0040000
501 #define SET_MULOV 0x0080000
502 /* SET_FLAGS must be 0x100000 as it is also the value of S bit (can be used for optimization). */
503 #define SET_FLAGS 0x0100000
504 #define UNUSED_RETURN 0x0200000
505 #define SLOW_DEST 0x0400000
506 #define SLOW_SRC1 0x0800000
507 #define SLOW_SRC2 0x1000000
508
509 static int emit_op_imm(struct sljit_compiler *compiler, int flags, int dst, sljit_uw arg1, sljit_uw arg2)
510 {
511 /* dst must be register, TMP_REG1
512 arg1 must be register, TMP_REG1, imm
513 arg2 must be register, TMP_REG2, imm */
514 int reg;
515 sljit_uw imm;
516
517 if (SLJIT_UNLIKELY((flags & (ARG1_IMM | ARG2_IMM)) == (ARG1_IMM | ARG2_IMM))) {
518 /* Both are immediates. */
519 flags &= ~ARG1_IMM;
520 FAIL_IF(load_immediate(compiler, TMP_REG1, arg1));
521 arg1 = TMP_REG1;
522 }
523
524 if (flags & (ARG1_IMM | ARG2_IMM)) {
525 reg = (flags & ARG2_IMM) ? arg1 : arg2;
526 imm = (flags & ARG2_IMM) ? arg2 : arg1;
527
528 switch (flags & 0xffff) {
529 case SLJIT_MOV:
530 SLJIT_ASSERT(!(flags & SET_FLAGS) && (flags & ARG2_IMM) && arg1 == TMP_REG1);
531 return load_immediate(compiler, dst, imm);
532 case SLJIT_NOT:
533 if (!(flags & SET_FLAGS))
534 return load_immediate(compiler, dst, ~imm);
535 /* Since the flags should be set, we just fallback to the register mode.
536 Although I could do some clever things here, "NOT IMM" does not worth the efforts. */
537 break;
538 case SLJIT_CLZ:
539 /* No form with immediate operand. */
540 break;
541 case SLJIT_ADD:
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 (reg == dst && imm <= 0xff)
546 return push_inst16(compiler, ADDSI8 | IMM8(imm) | RDN3(dst));
547 }
548 if (imm <= 0xfff && !(flags & SET_FLAGS))
549 return push_inst32(compiler, ADDWI | RD4(dst) | RN4(reg) | IMM12(imm));
550 imm = get_imm(imm);
551 if (imm != INVALID_IMM)
552 return push_inst32(compiler, ADD_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
553 break;
554 case SLJIT_ADDC:
555 imm = get_imm(imm);
556 if (imm != INVALID_IMM)
557 return push_inst32(compiler, ADCI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
558 break;
559 case SLJIT_SUB:
560 if (flags & ARG2_IMM) {
561 if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(reg, dst)) {
562 if (imm <= 0x7)
563 return push_inst16(compiler, SUBSI3 | IMM3(imm) | RD3(dst) | RN3(reg));
564 if (imm <= 0xff) {
565 if (reg == dst)
566 return push_inst16(compiler, SUBSI8 | IMM8(imm) | RDN3(dst));
567 if (flags & UNUSED_RETURN)
568 return push_inst16(compiler, CMPI | IMM8(imm) | RDN3(reg));
569 }
570 }
571 if (imm <= 0xfff && !(flags & SET_FLAGS))
572 return push_inst32(compiler, SUBWI | RD4(dst) | RN4(reg) | IMM12(imm));
573 imm = get_imm(imm);
574 if (imm != INVALID_IMM)
575 return push_inst32(compiler, SUB_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
576 }
577 else {
578 if (!(flags & KEEP_FLAGS) && imm == 0 && IS_2_LO_REGS(reg, dst))
579 return push_inst16(compiler, RSBSI | RD3(dst) | RN3(reg));
580 imm = get_imm(imm);
581 if (imm != INVALID_IMM)
582 return push_inst32(compiler, RSB_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
583 }
584 break;
585 case SLJIT_SUBC:
586 if (flags & ARG2_IMM) {
587 imm = get_imm(imm);
588 if (imm != INVALID_IMM)
589 return push_inst32(compiler, SBCI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
590 }
591 break;
592 case SLJIT_MUL:
593 /* No form with immediate operand. */
594 break;
595 case SLJIT_AND:
596 imm = get_imm(imm);
597 if (imm != INVALID_IMM)
598 return push_inst32(compiler, ANDI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
599 imm = get_imm(~((flags & ARG2_IMM) ? arg2 : arg1));
600 if (imm != INVALID_IMM)
601 return push_inst32(compiler, BICI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
602 break;
603 case SLJIT_OR:
604 imm = get_imm(imm);
605 if (imm != INVALID_IMM)
606 return push_inst32(compiler, ORRI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
607 imm = get_imm(~((flags & ARG2_IMM) ? arg2 : arg1));
608 if (imm != INVALID_IMM)
609 return push_inst32(compiler, ORNI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
610 break;
611 case SLJIT_XOR:
612 imm = get_imm(imm);
613 if (imm != INVALID_IMM)
614 return push_inst32(compiler, EORI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
615 break;
616 case SLJIT_SHL:
617 if (flags & ARG2_IMM) {
618 imm &= 0x1f;
619 if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, reg))
620 return push_inst16(compiler, LSLSI | RD3(dst) | RN3(reg) | (imm << 6));
621 return push_inst32(compiler, LSL_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm));
622 }
623 break;
624 case SLJIT_LSHR:
625 if (flags & ARG2_IMM) {
626 imm &= 0x1f;
627 if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, reg))
628 return push_inst16(compiler, LSRSI | RD3(dst) | RN3(reg) | (imm << 6));
629 return push_inst32(compiler, LSR_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm));
630 }
631 break;
632 case SLJIT_ASHR:
633 if (flags & ARG2_IMM) {
634 imm &= 0x1f;
635 if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, reg))
636 return push_inst16(compiler, ASRSI | RD3(dst) | RN3(reg) | (imm << 6));
637 return push_inst32(compiler, ASR_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm));
638 }
639 break;
640 default:
641 SLJIT_ASSERT_STOP();
642 break;
643 }
644
645 if (flags & ARG2_IMM) {
646 FAIL_IF(load_immediate(compiler, TMP_REG2, arg2));
647 arg2 = TMP_REG2;
648 }
649 else {
650 FAIL_IF(load_immediate(compiler, TMP_REG1, arg1));
651 arg1 = TMP_REG1;
652 }
653 }
654
655 /* Both arguments are registers. */
656 switch (flags & 0xffff) {
657 case SLJIT_MOV:
658 case SLJIT_MOV_UI:
659 case SLJIT_MOV_SI:
660 case SLJIT_MOVU:
661 case SLJIT_MOVU_UI:
662 case SLJIT_MOVU_SI:
663 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
664 return push_inst16(compiler, MOV | SET_REGS44(dst, arg2));
665 case SLJIT_MOV_UB:
666 case SLJIT_MOVU_UB:
667 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
668 if (IS_2_LO_REGS(dst, arg2))
669 return push_inst16(compiler, UXTB | RD3(dst) | RN3(arg2));
670 return push_inst32(compiler, UXTB_W | RD4(dst) | RM4(arg2));
671 case SLJIT_MOV_SB:
672 case SLJIT_MOVU_SB:
673 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
674 if (IS_2_LO_REGS(dst, arg2))
675 return push_inst16(compiler, SXTB | RD3(dst) | RN3(arg2));
676 return push_inst32(compiler, SXTB_W | RD4(dst) | RM4(arg2));
677 case SLJIT_MOV_UH:
678 case SLJIT_MOVU_UH:
679 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
680 if (IS_2_LO_REGS(dst, arg2))
681 return push_inst16(compiler, UXTH | RD3(dst) | RN3(arg2));
682 return push_inst32(compiler, UXTH_W | RD4(dst) | RM4(arg2));
683 case SLJIT_MOV_SH:
684 case SLJIT_MOVU_SH:
685 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
686 if (IS_2_LO_REGS(dst, arg2))
687 return push_inst16(compiler, SXTH | RD3(dst) | RN3(arg2));
688 return push_inst32(compiler, SXTH_W | RD4(dst) | RM4(arg2));
689 case SLJIT_NOT:
690 SLJIT_ASSERT(arg1 == TMP_REG1);
691 if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
692 return push_inst16(compiler, MVNS | RD3(dst) | RN3(arg2));
693 return push_inst32(compiler, MVN_W | (flags & SET_FLAGS) | RD4(dst) | RM4(arg2));
694 case SLJIT_CLZ:
695 SLJIT_ASSERT(arg1 == TMP_REG1);
696 FAIL_IF(push_inst32(compiler, CLZ | RN4(arg2) | RD4(dst) | RM4(arg2)));
697 if (flags & SET_FLAGS) {
698 if (reg_map[dst] <= 7)
699 return push_inst16(compiler, CMPI | RDN3(dst));
700 return push_inst32(compiler, ADD_WI | SET_FLAGS | RN4(dst) | RD4(dst));
701 }
702 return SLJIT_SUCCESS;
703 case SLJIT_ADD:
704 if (!(flags & KEEP_FLAGS) && IS_3_LO_REGS(dst, arg1, arg2))
705 return push_inst16(compiler, ADDS | RD3(dst) | RN3(arg1) | RM3(arg2));
706 if (dst == arg1 && !(flags & SET_FLAGS))
707 return push_inst16(compiler, ADD | SET_REGS44(dst, arg2));
708 return push_inst32(compiler, ADD_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
709 case SLJIT_ADDC:
710 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
711 return push_inst16(compiler, ADCS | RD3(dst) | RN3(arg2));
712 return push_inst32(compiler, ADC_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
713 case SLJIT_SUB:
714 if (!(flags & KEEP_FLAGS) && IS_3_LO_REGS(dst, arg1, arg2))
715 return push_inst16(compiler, SUBS | RD3(dst) | RN3(arg1) | RM3(arg2));
716 return push_inst32(compiler, SUB_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
717 case SLJIT_SUBC:
718 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
719 return push_inst16(compiler, SBCS | RD3(dst) | RN3(arg2));
720 return push_inst32(compiler, SBC_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
721 case SLJIT_MUL:
722 if (!(flags & SET_FLAGS))
723 return push_inst32(compiler, MUL | RD4(dst) | RN4(arg1) | RM4(arg2));
724 SLJIT_ASSERT(reg_map[TMP_REG2] <= 7 && dst != TMP_REG2);
725 FAIL_IF(push_inst32(compiler, SMULL | RT4(dst) | RD4(TMP_REG2) | RN4(arg1) | RM4(arg2)));
726 /* cmp TMP_REG2, dst asr #31. */
727 return push_inst32(compiler, CMP_W | RN4(TMP_REG2) | 0x70e0 | RM4(dst));
728 case SLJIT_AND:
729 if (!(flags & KEEP_FLAGS)) {
730 if (dst == arg1 && IS_2_LO_REGS(dst, arg2))
731 return push_inst16(compiler, ANDS | RD3(dst) | RN3(arg2));
732 if ((flags & UNUSED_RETURN) && IS_2_LO_REGS(arg1, arg2))
733 return push_inst16(compiler, TST | RD3(arg1) | RN3(arg2));
734 }
735 return push_inst32(compiler, AND_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
736 case SLJIT_OR:
737 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
738 return push_inst16(compiler, ORRS | RD3(dst) | RN3(arg2));
739 return push_inst32(compiler, ORR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
740 case SLJIT_XOR:
741 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
742 return push_inst16(compiler, EORS | RD3(dst) | RN3(arg2));
743 return push_inst32(compiler, EOR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
744 case SLJIT_SHL:
745 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
746 return push_inst16(compiler, LSLS | RD3(dst) | RN3(arg2));
747 return push_inst32(compiler, LSL_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
748 case SLJIT_LSHR:
749 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
750 return push_inst16(compiler, LSRS | RD3(dst) | RN3(arg2));
751 return push_inst32(compiler, LSR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
752 case SLJIT_ASHR:
753 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
754 return push_inst16(compiler, ASRS | RD3(dst) | RN3(arg2));
755 return push_inst32(compiler, ASR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
756 }
757
758 SLJIT_ASSERT_STOP();
759 return SLJIT_SUCCESS;
760 }
761
762 #define STORE 0x01
763 #define SIGNED 0x02
764
765 #define WORD_SIZE 0x00
766 #define BYTE_SIZE 0x04
767 #define HALF_SIZE 0x08
768
769 #define UPDATE 0x10
770 #define ARG_TEST 0x20
771
772 #define IS_WORD_SIZE(flags) (!(flags & (BYTE_SIZE | HALF_SIZE)))
773 #define OFFSET_CHECK(imm, shift) (!(argw & ~(imm << shift)))
774
775 /*
776 1st letter:
777 w = word
778 b = byte
779 h = half
780
781 2nd letter:
782 s = signed
783 u = unsigned
784
785 3rd letter:
786 l = load
787 s = store
788 */
789
790 static SLJIT_CONST sljit_uw sljit_mem16[12] = {
791 /* w u l */ 0x5800 /* ldr */,
792 /* w u s */ 0x5000 /* str */,
793 /* w s l */ 0x5800 /* ldr */,
794 /* w s s */ 0x5000 /* str */,
795
796 /* b u l */ 0x5c00 /* ldrb */,
797 /* b u s */ 0x5400 /* strb */,
798 /* b s l */ 0x5600 /* ldrsb */,
799 /* b s s */ 0x5400 /* strb */,
800
801 /* h u l */ 0x5a00 /* ldrh */,
802 /* h u s */ 0x5200 /* strh */,
803 /* h s l */ 0x5e00 /* ldrsh */,
804 /* h s s */ 0x5200 /* strh */,
805 };
806
807 static SLJIT_CONST sljit_uw sljit_mem16_imm5[12] = {
808 /* w u l */ 0x6800 /* ldr imm5 */,
809 /* w u s */ 0x6000 /* str imm5 */,
810 /* w s l */ 0x6800 /* ldr imm5 */,
811 /* w s s */ 0x6000 /* str imm5 */,
812
813 /* b u l */ 0x7800 /* ldrb imm5 */,
814 /* b u s */ 0x7000 /* strb imm5 */,
815 /* b s l */ 0x0000 /* not allowed */,
816 /* b s s */ 0x7000 /* strb imm5 */,
817
818 /* h u l */ 0x8800 /* ldrh imm5 */,
819 /* h u s */ 0x8000 /* strh imm5 */,
820 /* h s l */ 0x0000 /* not allowed */,
821 /* h s s */ 0x8000 /* strh imm5 */,
822 };
823
824 #define MEM_IMM8 0xc00
825 #define MEM_IMM12 0x800000
826 static SLJIT_CONST sljit_uw sljit_mem32[12] = {
827 /* w u l */ 0xf8500000 /* ldr.w */,
828 /* w u s */ 0xf8400000 /* str.w */,
829 /* w s l */ 0xf8500000 /* ldr.w */,
830 /* w s s */ 0xf8400000 /* str.w */,
831
832 /* b u l */ 0xf8100000 /* ldrb.w */,
833 /* b u s */ 0xf8000000 /* strb.w */,
834 /* b s l */ 0xf9100000 /* ldrsb.w */,
835 /* b s s */ 0xf8000000 /* strb.w */,
836
837 /* h u l */ 0xf8300000 /* ldrh.w */,
838 /* h u s */ 0xf8200000 /* strsh.w */,
839 /* h s l */ 0xf9300000 /* ldrsh.w */,
840 /* h s s */ 0xf8200000 /* strsh.w */,
841 };
842
843 /* Helper function. Dst should be reg + value, using at most 1 instruction, flags does not set. */
844 static int emit_set_delta(struct sljit_compiler *compiler, int dst, int reg, sljit_w value)
845 {
846 if (value >= 0) {
847 if (value <= 0xfff)
848 return push_inst32(compiler, ADDWI | RD4(dst) | RN4(reg) | IMM12(value));
849 value = get_imm(value);
850 if (value != INVALID_IMM)
851 return push_inst32(compiler, ADD_WI | RD4(dst) | RN4(reg) | value);
852 }
853 else {
854 value = -value;
855 if (value <= 0xfff)
856 return push_inst32(compiler, SUBWI | RD4(dst) | RN4(reg) | IMM12(value));
857 value = get_imm(value);
858 if (value != INVALID_IMM)
859 return push_inst32(compiler, SUB_WI | RD4(dst) | RN4(reg) | value);
860 }
861 return SLJIT_ERR_UNSUPPORTED;
862 }
863
864 /* Can perform an operation using at most 1 instruction. */
865 static int getput_arg_fast(struct sljit_compiler *compiler, int flags, int reg, int arg, sljit_w argw)
866 {
867 int tmp;
868
869 SLJIT_ASSERT(arg & SLJIT_MEM);
870
871 if (SLJIT_UNLIKELY(flags & UPDATE)) {
872 if ((arg & 0xf) && !(arg & 0xf0) && argw <= 0xff && argw >= -0xff) {
873 flags &= ~UPDATE;
874 arg &= 0xf;
875 if (SLJIT_UNLIKELY(flags & ARG_TEST))
876 return 1;
877
878 if (argw >= 0)
879 argw |= 0x200;
880 else {
881 argw = -argw;
882 }
883 SLJIT_ASSERT(argw >= 0 && (argw & 0xff) <= 0xff);
884 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | MEM_IMM8 | RT4(reg) | RN4(arg) | 0x100 | argw));
885 return -1;
886 }
887 return (flags & ARG_TEST) ? SLJIT_SUCCESS : 0;
888 }
889
890 if (SLJIT_UNLIKELY(arg & 0xf0)) {
891 argw &= 0x3;
892 tmp = (arg >> 4) & 0xf;
893 arg &= 0xf;
894 if (SLJIT_UNLIKELY(flags & ARG_TEST))
895 return 1;
896
897 if (!argw && IS_3_LO_REGS(reg, arg, tmp))
898 FAIL_IF(push_inst16(compiler, sljit_mem16[flags] | RD3(reg) | RN3(arg) | RM3(tmp)));
899 else
900 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(tmp) | (argw << 4)));
901 return -1;
902 }
903
904 if (!(arg & 0xf) || argw > 0xfff || argw < -0xff)
905 return (flags & ARG_TEST) ? SLJIT_SUCCESS : 0;
906
907 if (SLJIT_UNLIKELY(flags & ARG_TEST))
908 return 1;
909
910 arg &= 0xf;
911 if (IS_2_LO_REGS(reg, arg) && sljit_mem16_imm5[flags]) {
912 tmp = 3;
913 if (IS_WORD_SIZE(flags)) {
914 if (OFFSET_CHECK(0x1f, 2))
915 tmp = 2;
916 }
917 else if (flags & BYTE_SIZE)
918 {
919 if (OFFSET_CHECK(0x1f, 0))
920 tmp = 0;
921 }
922 else {
923 SLJIT_ASSERT(flags & HALF_SIZE);
924 if (OFFSET_CHECK(0x1f, 1))
925 tmp = 1;
926 }
927
928 if (tmp != 3) {
929 FAIL_IF(push_inst16(compiler, sljit_mem16_imm5[flags] | RD3(reg) | RN3(arg) | (argw << (6 - tmp))));
930 return -1;
931 }
932 }
933
934 /* SP based immediate. */
935 if (SLJIT_UNLIKELY(arg == SLJIT_LOCALS_REG) && OFFSET_CHECK(0xff, 2) && IS_WORD_SIZE(flags) && reg_map[reg] <= 7) {
936 FAIL_IF(push_inst16(compiler, STR_SP | ((flags & STORE) ? 0 : 0x800) | RDN3(reg) | (argw >> 2)));
937 return -1;
938 }
939
940 if (argw >= 0)
941 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(arg) | argw));
942 else
943 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | MEM_IMM8 | RT4(reg) | RN4(arg) | -argw));
944 return -1;
945 }
946
947 /* see getput_arg below.
948 Note: can_cache is called only for binary operators. Those
949 operators always uses word arguments without write back. */
950 static int can_cache(int arg, sljit_w argw, int next_arg, sljit_w next_argw)
951 {
952 /* Simple operation except for updates. */
953 if ((arg & 0xf0) || !(next_arg & SLJIT_MEM))
954 return 0;
955
956 if (!(arg & 0xf)) {
957 if ((sljit_uw)(argw - next_argw) <= 0xfff || (sljit_uw)(next_argw - argw) <= 0xfff)
958 return 1;
959 return 0;
960 }
961
962 if (argw == next_argw)
963 return 1;
964
965 if (arg == next_arg && ((sljit_uw)(argw - next_argw) <= 0xfff || (sljit_uw)(next_argw - argw) <= 0xfff))
966 return 1;
967
968 return 0;
969 }
970
971 /* Emit the necessary instructions. See can_cache above. */
972 static int getput_arg(struct sljit_compiler *compiler, int flags, int reg, int arg, sljit_w argw, int next_arg, sljit_w next_argw)
973 {
974 int tmp_r;
975 sljit_w tmp;
976
977 SLJIT_ASSERT(arg & SLJIT_MEM);
978 if (!(next_arg & SLJIT_MEM)) {
979 next_arg = 0;
980 next_argw = 0;
981 }
982
983 tmp_r = (flags & STORE) ? TMP_REG3 : reg;
984
985 if (SLJIT_UNLIKELY(flags & UPDATE)) {
986 flags &= ~UPDATE;
987 /* Update only applies if a base register exists. */
988 if (arg & 0xf) {
989 /* There is no caching here. */
990 tmp = (arg & 0xf0) >> 4;
991 arg &= 0xf;
992
993 if (!tmp) {
994 if (!(argw & ~0xfff)) {
995 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(arg) | argw));
996 return push_inst32(compiler, ADDWI | RD4(arg) | RN4(arg) | IMM12(argw));
997 }
998
999 if (compiler->cache_arg == SLJIT_MEM) {
1000 if (argw == compiler->cache_argw) {
1001 tmp = TMP_REG3;
1002 argw = 0;
1003 }
1004 else if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, argw - compiler->cache_argw) != SLJIT_ERR_UNSUPPORTED) {
1005 FAIL_IF(compiler->error);
1006 compiler->cache_argw = argw;
1007 tmp = TMP_REG3;
1008 argw = 0;
1009 }
1010 }
1011
1012 if (argw) {
1013 FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1014 compiler->cache_arg = SLJIT_MEM;
1015 compiler->cache_argw = argw;
1016 tmp = TMP_REG3;
1017 argw = 0;
1018 }
1019 }
1020
1021 argw &= 0x3;
1022 if (!argw && IS_3_LO_REGS(reg, arg, tmp)) {
1023 FAIL_IF(push_inst16(compiler, sljit_mem16[flags] | RD3(reg) | RN3(arg) | RM3(tmp)));
1024 return push_inst16(compiler, ADD | SET_REGS44(arg, tmp));
1025 }
1026 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(tmp) | (argw << 4)));
1027 return push_inst32(compiler, ADD_W | RD4(arg) | RN4(arg) | RM4(tmp) | (argw << 6));
1028 }
1029 }
1030
1031 SLJIT_ASSERT(!(arg & 0xf0));
1032
1033 if (compiler->cache_arg == arg) {
1034 if (!((argw - compiler->cache_argw) & ~0xfff))
1035 return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(TMP_REG3) | (argw - compiler->cache_argw));
1036 if (!((compiler->cache_argw - argw) & ~0xff))
1037 return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM8 | RT4(reg) | RN4(TMP_REG3) | (compiler->cache_argw - argw));
1038 if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, argw - compiler->cache_argw) != SLJIT_ERR_UNSUPPORTED) {
1039 FAIL_IF(compiler->error);
1040 return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(TMP_REG3) | 0);
1041 }
1042 }
1043
1044 next_arg = (arg & 0xf) && (arg == next_arg);
1045 arg &= 0xf;
1046 if (arg && compiler->cache_arg == SLJIT_MEM && compiler->cache_argw == argw)
1047 return push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(TMP_REG3));
1048
1049 compiler->cache_argw = argw;
1050 if (next_arg && emit_set_delta(compiler, TMP_REG3, arg, argw) != SLJIT_ERR_UNSUPPORTED) {
1051 FAIL_IF(compiler->error);
1052 compiler->cache_arg = SLJIT_MEM | arg;
1053 arg = 0;
1054 }
1055 else {
1056 FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1057 compiler->cache_arg = SLJIT_MEM;
1058
1059 if (next_arg) {
1060 FAIL_IF(push_inst16(compiler, ADD | SET_REGS44(TMP_REG3, arg)));
1061 compiler->cache_arg = SLJIT_MEM | arg;
1062 arg = 0;
1063 }
1064 }
1065
1066 if (arg)
1067 return push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(TMP_REG3));
1068 return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(TMP_REG3) | 0);
1069 }
1070
1071 static SLJIT_INLINE int emit_op_mem(struct sljit_compiler *compiler, int flags, int reg, int arg, sljit_w argw)
1072 {
1073 if (getput_arg_fast(compiler, flags, reg, arg, argw))
1074 return compiler->error;
1075 compiler->cache_arg = 0;
1076 compiler->cache_argw = 0;
1077 return getput_arg(compiler, flags, reg, arg, argw, 0, 0);
1078 }
1079
1080 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_enter(struct sljit_compiler *compiler, int args, int temporaries, int generals, int local_size)
1081 {
1082 int size;
1083 sljit_ins push;
1084
1085 CHECK_ERROR();
1086 check_sljit_emit_enter(compiler, args, temporaries, generals, local_size);
1087
1088 compiler->temporaries = temporaries;
1089 compiler->generals = generals;
1090
1091 push = (1 << 4);
1092 if (generals >= 5)
1093 push |= 1 << 11;
1094 if (generals >= 4)
1095 push |= 1 << 10;
1096 if (generals >= 3)
1097 push |= 1 << 8;
1098 if (generals >= 2)
1099 push |= 1 << 7;
1100 if (generals >= 1)
1101 push |= 1 << 6;
1102 if (temporaries >= 5)
1103 push |= 1 << 5;
1104 FAIL_IF(generals >= 3
1105 ? push_inst32(compiler, PUSH_W | (1 << 14) | push)
1106 : push_inst16(compiler, PUSH | push));
1107
1108 /* Stack must be aligned to 8 bytes: */
1109 size = (3 + generals) * sizeof(sljit_uw);
1110 local_size += size;
1111 local_size = (local_size + 7) & ~7;
1112 local_size -= size;
1113 compiler->local_size = local_size;
1114 if (local_size > 0) {
1115 if (local_size <= (127 << 2))
1116 FAIL_IF(push_inst16(compiler, SUB_SP | (local_size >> 2)));
1117 else
1118 FAIL_IF(emit_op_imm(compiler, SLJIT_SUB | ARG2_IMM, SLJIT_LOCALS_REG, SLJIT_LOCALS_REG, local_size));
1119 }
1120
1121 if (args >= 1)
1122 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_GENERAL_REG1, SLJIT_TEMPORARY_REG1)));
1123 if (args >= 2)
1124 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_GENERAL_REG2, SLJIT_TEMPORARY_REG2)));
1125 if (args >= 3)
1126 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_GENERAL_REG3, SLJIT_TEMPORARY_REG3)));
1127
1128 return SLJIT_SUCCESS;
1129 }
1130
1131 SLJIT_API_FUNC_ATTRIBUTE void sljit_fake_enter(struct sljit_compiler *compiler, int args, int temporaries, int generals, int local_size)
1132 {
1133 int size;
1134
1135 CHECK_ERROR_VOID();
1136 check_sljit_fake_enter(compiler, args, temporaries, generals, local_size);
1137
1138 compiler->temporaries = temporaries;
1139 compiler->generals = generals;
1140
1141 size = (3 + generals) * sizeof(sljit_uw);
1142 local_size += size;
1143 local_size = (local_size + 7) & ~7;
1144 local_size -= size;
1145 compiler->local_size = local_size;
1146 }
1147
1148 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_return(struct sljit_compiler *compiler, int src, sljit_w srcw)
1149 {
1150 sljit_ins pop;
1151
1152 CHECK_ERROR();
1153 check_sljit_emit_return(compiler, src, srcw);
1154
1155 if (src != SLJIT_UNUSED && src != SLJIT_RETURN_REG) {
1156 if (src >= SLJIT_TEMPORARY_REG1 && src <= TMP_REG3)
1157 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_RETURN_REG, src)));
1158 else
1159 FAIL_IF(emit_op_mem(compiler, WORD_SIZE, SLJIT_RETURN_REG, src, srcw));
1160 }
1161
1162 if (compiler->local_size > 0) {
1163 if (compiler->local_size <= (127 << 2))
1164 FAIL_IF(push_inst16(compiler, ADD_SP | (compiler->local_size >> 2)));
1165 else
1166 FAIL_IF(emit_op_imm(compiler, SLJIT_ADD | ARG2_IMM, SLJIT_LOCALS_REG, SLJIT_LOCALS_REG, compiler->local_size));
1167 }
1168
1169 pop = (1 << 4);
1170 if (compiler->generals >= 5)
1171 pop |= 1 << 11;
1172 if (compiler->generals >= 4)
1173 pop |= 1 << 10;
1174 if (compiler->generals >= 3)
1175 pop |= 1 << 8;
1176 if (compiler->generals >= 2)
1177 pop |= 1 << 7;
1178 if (compiler->generals >= 1)
1179 pop |= 1 << 6;
1180 if (compiler->temporaries >= 5)
1181 pop |= 1 << 5;
1182 return compiler->generals >= 3
1183 ? push_inst32(compiler, POP_W | (1 << 15) | pop)
1184 : push_inst16(compiler, POP | pop);
1185 }
1186
1187 /* --------------------------------------------------------------------- */
1188 /* Operators */
1189 /* --------------------------------------------------------------------- */
1190
1191 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op0(struct sljit_compiler *compiler, int op)
1192 {
1193 CHECK_ERROR();
1194 check_sljit_emit_op0(compiler, op);
1195
1196 op = GET_OPCODE(op);
1197 switch (op) {
1198 case SLJIT_BREAKPOINT:
1199 push_inst16(compiler, BKPT);
1200 break;
1201 case SLJIT_NOP:
1202 push_inst16(compiler, NOP);
1203 break;
1204 }
1205
1206 return SLJIT_SUCCESS;
1207 }
1208
1209 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op1(struct sljit_compiler *compiler, int op,
1210 int dst, sljit_w dstw,
1211 int src, sljit_w srcw)
1212 {
1213 int op_type, dst_r, flags;
1214
1215 CHECK_ERROR();
1216 check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw);
1217
1218 compiler->cache_arg = 0;
1219 compiler->cache_argw = 0;
1220
1221 op_type = GET_OPCODE(op);
1222 dst_r = (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) ? dst : TMP_REG1;
1223
1224 if (op_type >= SLJIT_MOV && op_type <= SLJIT_MOVU_SI) {
1225 switch (op_type) {
1226 case SLJIT_MOV:
1227 case SLJIT_MOV_UI:
1228 case SLJIT_MOV_SI:
1229 flags = WORD_SIZE;
1230 break;
1231 case SLJIT_MOV_UB:
1232 flags = BYTE_SIZE;
1233 if (src & SLJIT_IMM)
1234 srcw = (unsigned char)srcw;
1235 break;
1236 case SLJIT_MOV_SB:
1237 flags = BYTE_SIZE | SIGNED;
1238 if (src & SLJIT_IMM)
1239 srcw = (signed char)srcw;
1240 break;
1241 case SLJIT_MOV_UH:
1242 flags = HALF_SIZE;
1243 if (src & SLJIT_IMM)
1244 srcw = (unsigned short)srcw;
1245 break;
1246 case SLJIT_MOV_SH:
1247 flags = HALF_SIZE | SIGNED;
1248 if (src & SLJIT_IMM)
1249 srcw = (signed short)srcw;
1250 break;
1251 case SLJIT_MOVU:
1252 case SLJIT_MOVU_UI:
1253 case SLJIT_MOVU_SI:
1254 flags = WORD_SIZE | UPDATE;
1255 break;
1256 case SLJIT_MOVU_UB:
1257 flags = BYTE_SIZE | UPDATE;
1258 if (src & SLJIT_IMM)
1259 srcw = (unsigned char)srcw;
1260 break;
1261 case SLJIT_MOVU_SB:
1262 flags = BYTE_SIZE | SIGNED | UPDATE;
1263 if (src & SLJIT_IMM)
1264 srcw = (signed char)srcw;
1265 break;
1266 case SLJIT_MOVU_UH:
1267 flags = HALF_SIZE | UPDATE;
1268 if (src & SLJIT_IMM)
1269 srcw = (unsigned short)srcw;
1270 break;
1271 case SLJIT_MOVU_SH:
1272 flags = HALF_SIZE | SIGNED | UPDATE;
1273 if (src & SLJIT_IMM)
1274 srcw = (signed short)srcw;
1275 break;
1276 default:
1277 SLJIT_ASSERT_STOP();
1278 flags = 0;
1279 break;
1280 }
1281
1282 if (src & SLJIT_IMM)
1283 FAIL_IF(emit_op_imm(compiler, SLJIT_MOV | ARG2_IMM, dst_r, TMP_REG1, srcw));
1284 else if (src & SLJIT_MEM) {
1285 if (getput_arg_fast(compiler, flags, dst_r, src, srcw))
1286 FAIL_IF(compiler->error);
1287 else
1288 FAIL_IF(getput_arg(compiler, flags, dst_r, src, srcw, dst, dstw));
1289 } else {
1290 if (dst_r != TMP_REG1)
1291 return emit_op_imm(compiler, op_type, dst_r, TMP_REG1, src);
1292 dst_r = src;
1293 }
1294
1295 if (dst & SLJIT_MEM) {
1296 if (getput_arg_fast(compiler, flags | STORE, dst_r, dst, dstw))
1297 return compiler->error;
1298 else
1299 return getput_arg(compiler, flags | STORE, dst_r, dst, dstw, 0, 0);
1300 }
1301 return SLJIT_SUCCESS;
1302 }
1303
1304 if (op_type == SLJIT_NEG) {
1305 #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) || (defined SLJIT_DEBUG && SLJIT_DEBUG)
1306 compiler->skip_checks = 1;
1307 #endif
1308 return sljit_emit_op2(compiler, GET_FLAGS(op) | SLJIT_SUB, dst, dstw, SLJIT_IMM, 0, src, srcw);
1309 }
1310
1311 flags = (GET_FLAGS(op) ? SET_FLAGS : 0) | ((op & SLJIT_KEEP_FLAGS) ? KEEP_FLAGS : 0);
1312 if (src & SLJIT_MEM) {
1313 if (getput_arg_fast(compiler, WORD_SIZE, TMP_REG2, src, srcw))
1314 FAIL_IF(compiler->error);
1315 else
1316 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src, srcw, dst, dstw));
1317 src = TMP_REG2;
1318 }
1319
1320 if (src & SLJIT_IMM)
1321 flags |= ARG2_IMM;
1322 else
1323 srcw = src;
1324
1325 emit_op_imm(compiler, flags | op_type, dst_r, TMP_REG1, srcw);
1326
1327 if (dst & SLJIT_MEM) {
1328 if (getput_arg_fast(compiler, flags | STORE, dst_r, dst, dstw))
1329 return compiler->error;
1330 else
1331 return getput_arg(compiler, flags | STORE, dst_r, dst, dstw, 0, 0);
1332 }
1333 return SLJIT_SUCCESS;
1334 }
1335
1336 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op2(struct sljit_compiler *compiler, int op,
1337 int dst, sljit_w dstw,
1338 int src1, sljit_w src1w,
1339 int src2, sljit_w src2w)
1340 {
1341 int dst_r, flags;
1342
1343 CHECK_ERROR();
1344 check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w);
1345
1346 compiler->cache_arg = 0;
1347 compiler->cache_argw = 0;
1348
1349 dst_r = (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) ? dst : TMP_REG1;
1350 flags = (GET_FLAGS(op) ? SET_FLAGS : 0) | ((op & SLJIT_KEEP_FLAGS) ? KEEP_FLAGS : 0);
1351
1352 if ((dst & SLJIT_MEM) && !getput_arg_fast(compiler, WORD_SIZE | STORE | ARG_TEST, TMP_REG1, dst, dstw))
1353 flags |= SLOW_DEST;
1354
1355 if (src1 & SLJIT_MEM) {
1356 if (getput_arg_fast(compiler, WORD_SIZE, TMP_REG1, src1, src1w))
1357 FAIL_IF(compiler->error);
1358 else
1359 flags |= SLOW_SRC1;
1360 }
1361 if (src2 & SLJIT_MEM) {
1362 if (getput_arg_fast(compiler, WORD_SIZE, TMP_REG2, src2, src2w))
1363 FAIL_IF(compiler->error);
1364 else
1365 flags |= SLOW_SRC2;
1366 }
1367
1368 if ((flags & (SLOW_SRC1 | SLOW_SRC2)) == (SLOW_SRC1 | SLOW_SRC2)) {
1369 if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
1370 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src2, src2w, src1, src1w));
1371 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG1, src1, src1w, dst, dstw));
1372 }
1373 else {
1374 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG1, src1, src1w, src2, src2w));
1375 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src2, src2w, dst, dstw));
1376 }
1377 }
1378 else if (flags & SLOW_SRC1)
1379 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG1, src1, src1w, dst, dstw));
1380 else if (flags & SLOW_SRC2)
1381 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src2, src2w, dst, dstw));
1382
1383 if (src1 & SLJIT_MEM)
1384 src1 = TMP_REG1;
1385 if (src2 & SLJIT_MEM)
1386 src2 = TMP_REG2;
1387
1388 if (src1 & SLJIT_IMM)
1389 flags |= ARG1_IMM;
1390 else
1391 src1w = src1;
1392 if (src2 & SLJIT_IMM)
1393 flags |= ARG2_IMM;
1394 else
1395 src2w = src2;
1396
1397 if (dst == SLJIT_UNUSED)
1398 flags |= UNUSED_RETURN;
1399
1400 if (GET_OPCODE(op) == SLJIT_MUL && (op & SLJIT_SET_O))
1401 flags |= SET_MULOV;
1402
1403 emit_op_imm(compiler, flags | GET_OPCODE(op), dst_r, src1w, src2w);
1404
1405 if (dst & SLJIT_MEM) {
1406 if (!(flags & SLOW_DEST)) {
1407 getput_arg_fast(compiler, WORD_SIZE | STORE, dst_r, dst, dstw);
1408 return compiler->error;
1409 }
1410 return getput_arg(compiler, WORD_SIZE | STORE, TMP_REG1, dst, dstw, 0, 0);
1411 }
1412 return SLJIT_SUCCESS;
1413 }
1414
1415 /* --------------------------------------------------------------------- */
1416 /* Floating point operators */
1417 /* --------------------------------------------------------------------- */
1418
1419 SLJIT_API_FUNC_ATTRIBUTE int sljit_is_fpu_available(void)
1420 {
1421 return 1;
1422 }
1423
1424 static int emit_fop_mem(struct sljit_compiler *compiler, int flags, int reg, int arg, sljit_w argw)
1425 {
1426 sljit_w tmp;
1427 sljit_w inst = VSTR | ((flags & STORE) ? 0 : 0x00100000);
1428
1429 SLJIT_ASSERT(arg & SLJIT_MEM);
1430
1431 /* Fast loads and stores. */
1432 if (SLJIT_UNLIKELY(arg & 0xf0)) {
1433 FAIL_IF(push_inst32(compiler, ADD_W | RD4(TMP_REG2) | RN4(arg & 0xf) | RM4((arg & 0xf0) >> 4) | ((argw & 0x3) << 6)));
1434 arg = SLJIT_MEM | TMP_REG2;
1435 argw = 0;
1436 }
1437
1438 if (arg & 0xf) {
1439 if (!(argw & ~0x3fc))
1440 return push_inst32(compiler, inst | 0x800000 | RN4(arg & 0xf) | DD4(reg) | (argw >> 2));
1441 if (!(-argw & ~0x3fc))
1442 return push_inst32(compiler, inst | RN4(arg & 0xf) | DD4(reg) | (-argw >> 2));
1443 }
1444
1445 SLJIT_ASSERT(!(arg & 0xf0));
1446 if (compiler->cache_arg == arg) {
1447 tmp = argw - compiler->cache_argw;
1448 if (!(tmp & ~0x3fc))
1449 return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG3) | DD4(reg) | (tmp >> 2));
1450 if (!(-tmp & ~0x3fc))
1451 return push_inst32(compiler, inst | RN4(TMP_REG3) | DD4(reg) | (-tmp >> 2));
1452 if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, tmp) != SLJIT_ERR_UNSUPPORTED) {
1453 FAIL_IF(compiler->error);
1454 compiler->cache_argw = argw;
1455 return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG3) | DD4(reg));
1456 }
1457 }
1458
1459 compiler->cache_arg = arg;
1460 compiler->cache_argw = argw;
1461
1462 if (SLJIT_UNLIKELY(!(arg & 0xf)))
1463 FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1464 else if (emit_set_delta(compiler, TMP_REG3, arg & 0xf, argw) != SLJIT_ERR_UNSUPPORTED)
1465 FAIL_IF(compiler->error);
1466 else {
1467 FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1468 if (arg & 0xf)
1469 FAIL_IF(push_inst16(compiler, ADD | SET_REGS44(TMP_REG3, (arg & 0xf))));
1470 }
1471 return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG3) | DD4(reg));
1472 }
1473
1474 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fop1(struct sljit_compiler *compiler, int op,
1475 int dst, sljit_w dstw,
1476 int src, sljit_w srcw)
1477 {
1478 int dst_r;
1479
1480 CHECK_ERROR();
1481 check_sljit_emit_fop1(compiler, op, dst, dstw, src, srcw);
1482
1483 compiler->cache_arg = 0;
1484 compiler->cache_argw = 0;
1485
1486 if (GET_OPCODE(op) == SLJIT_FCMP) {
1487 if (dst & SLJIT_MEM) {
1488 emit_fop_mem(compiler, 0, TMP_FREG1, dst, dstw);
1489 dst = TMP_FREG1;
1490 }
1491 if (src & SLJIT_MEM) {
1492 emit_fop_mem(compiler, 0, TMP_FREG2, src, srcw);
1493 src = TMP_FREG2;
1494 }
1495 FAIL_IF(push_inst32(compiler, VCMP_F64 | DD4(dst) | DM4(src)));
1496 return push_inst32(compiler, VMRS);
1497 }
1498
1499 dst_r = (dst >= SLJIT_FLOAT_REG1 && dst <= SLJIT_FLOAT_REG4) ? dst : TMP_FREG1;
1500 if (src & SLJIT_MEM) {
1501 emit_fop_mem(compiler, 0, dst_r, src, srcw);
1502 src = dst_r;
1503 }
1504
1505 switch (GET_OPCODE(op)) {
1506 case SLJIT_FMOV:
1507 if (src != dst_r)
1508 FAIL_IF(push_inst32(compiler, VMOV_F64 | DD4(dst_r) | DM4(src)));
1509 break;
1510 case SLJIT_FNEG:
1511 FAIL_IF(push_inst32(compiler, VNEG_F64 | DD4(dst_r) | DM4(src)));
1512 break;
1513 case SLJIT_FABS:
1514 FAIL_IF(push_inst32(compiler, VABS_F64 | DD4(dst_r) | DM4(src)));
1515 break;
1516 }
1517
1518 if (dst & SLJIT_MEM)
1519 return emit_fop_mem(compiler, STORE, TMP_FREG1, dst, dstw);
1520 return SLJIT_SUCCESS;
1521 }
1522
1523 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fop2(struct sljit_compiler *compiler, int op,
1524 int dst, sljit_w dstw,
1525 int src1, sljit_w src1w,
1526 int src2, sljit_w src2w)
1527 {
1528 int dst_r;
1529
1530 CHECK_ERROR();
1531 check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w);
1532
1533 compiler->cache_arg = 0;
1534 compiler->cache_argw = 0;
1535
1536 dst_r = (dst >= SLJIT_FLOAT_REG1 && dst <= SLJIT_FLOAT_REG4) ? dst : TMP_FREG1;
1537 if (src1 & SLJIT_MEM) {
1538 emit_fop_mem(compiler, 0, TMP_FREG1, src1, src1w);
1539 src1 = TMP_FREG1;
1540 }
1541 if (src2 & SLJIT_MEM) {
1542 emit_fop_mem(compiler, 0, TMP_FREG2, src2, src2w);
1543 src2 = TMP_FREG2;
1544 }
1545
1546 switch (GET_OPCODE(op)) {
1547 case SLJIT_FADD:
1548 FAIL_IF(push_inst32(compiler, VADD_F64 | DD4(dst_r) | DN4(src1) | DM4(src2)));
1549 break;
1550 case SLJIT_FSUB:
1551 FAIL_IF(push_inst32(compiler, VSUB_F64 | DD4(dst_r) | DN4(src1) | DM4(src2)));
1552 break;
1553 case SLJIT_FMUL:
1554 FAIL_IF(push_inst32(compiler, VMUL_F64 | DD4(dst_r) | DN4(src1) | DM4(src2)));
1555 break;
1556 case SLJIT_FDIV:
1557 FAIL_IF(push_inst32(compiler, VDIV_F64 | DD4(dst_r) | DN4(src1) | DM4(src2)));
1558 break;
1559 }
1560
1561 if (dst & SLJIT_MEM)
1562 return emit_fop_mem(compiler, STORE, TMP_FREG1, dst, dstw);
1563 return SLJIT_SUCCESS;
1564 }
1565
1566 /* --------------------------------------------------------------------- */
1567 /* Other instructions */
1568 /* --------------------------------------------------------------------- */
1569
1570 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fast_enter(struct sljit_compiler *compiler, int dst, sljit_w dstw, int args, int temporaries, int generals, int local_size)
1571 {
1572 int size;
1573
1574 CHECK_ERROR();
1575 check_sljit_emit_fast_enter(compiler, dst, dstw, args, temporaries, generals, local_size);
1576
1577 compiler->temporaries = temporaries;
1578 compiler->generals = generals;
1579
1580 size = (3 + generals) * sizeof(sljit_uw);
1581 local_size += size;
1582 local_size = (local_size + 7) & ~7;
1583 local_size -= size;
1584 compiler->local_size = local_size;
1585
1586 if (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS)
1587 return push_inst16(compiler, MOV | SET_REGS44(dst, TMP_REG3));
1588 else if (dst & SLJIT_MEM) {
1589 if (getput_arg_fast(compiler, WORD_SIZE | STORE, TMP_REG3, dst, dstw))
1590 return compiler->error;
1591 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(TMP_REG2, TMP_REG3)));
1592 compiler->cache_arg = 0;
1593 compiler->cache_argw = 0;
1594 return getput_arg(compiler, WORD_SIZE | STORE, TMP_REG2, dst, dstw, 0, 0);
1595 }
1596
1597 return SLJIT_SUCCESS;
1598 }
1599
1600 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fast_return(struct sljit_compiler *compiler, int src, sljit_w srcw)
1601 {
1602 CHECK_ERROR();
1603 check_sljit_emit_fast_return(compiler, src, srcw);
1604
1605 if (src >= SLJIT_TEMPORARY_REG1 && src <= SLJIT_NO_REGISTERS)
1606 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(TMP_REG3, src)));
1607 else if (src & SLJIT_MEM) {
1608 if (getput_arg_fast(compiler, WORD_SIZE, TMP_REG3, src, srcw))
1609 FAIL_IF(compiler->error);
1610 else {
1611 compiler->cache_arg = 0;
1612 compiler->cache_argw = 0;
1613 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src, srcw, 0, 0));
1614 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(TMP_REG3, TMP_REG2)));
1615 }
1616 }
1617 else if (src & SLJIT_IMM)
1618 FAIL_IF(load_immediate(compiler, TMP_REG3, srcw));
1619 return push_inst16(compiler, BLX | RN3(TMP_REG3));
1620 }
1621
1622 /* --------------------------------------------------------------------- */
1623 /* Conditional instructions */
1624 /* --------------------------------------------------------------------- */
1625
1626 static sljit_uw get_cc(int type)
1627 {
1628 switch (type) {
1629 case SLJIT_C_EQUAL:
1630 case SLJIT_C_MUL_NOT_OVERFLOW:
1631 case SLJIT_C_FLOAT_EQUAL:
1632 return 0x0;
1633
1634 case SLJIT_C_NOT_EQUAL:
1635 case SLJIT_C_MUL_OVERFLOW:
1636 case SLJIT_C_FLOAT_NOT_EQUAL:
1637 return 0x1;
1638
1639 case SLJIT_C_LESS:
1640 case SLJIT_C_FLOAT_LESS:
1641 return 0x3;
1642
1643 case SLJIT_C_GREATER_EQUAL:
1644 case SLJIT_C_FLOAT_GREATER_EQUAL:
1645 return 0x2;
1646
1647 case SLJIT_C_GREATER:
1648 case SLJIT_C_FLOAT_GREATER:
1649 return 0x8;
1650
1651 case SLJIT_C_LESS_EQUAL:
1652 case SLJIT_C_FLOAT_LESS_EQUAL:
1653 return 0x9;
1654
1655 case SLJIT_C_SIG_LESS:
1656 return 0xb;
1657
1658 case SLJIT_C_SIG_GREATER_EQUAL:
1659 return 0xa;
1660
1661 case SLJIT_C_SIG_GREATER:
1662 return 0xc;
1663
1664 case SLJIT_C_SIG_LESS_EQUAL:
1665 return 0xd;
1666
1667 case SLJIT_C_OVERFLOW:
1668 case SLJIT_C_FLOAT_NAN:
1669 return 0x6;
1670
1671 case SLJIT_C_NOT_OVERFLOW:
1672 case SLJIT_C_FLOAT_NOT_NAN:
1673 return 0x7;
1674
1675 default: /* SLJIT_JUMP */
1676 return 0xe;
1677 }
1678 }
1679
1680 SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler)
1681 {
1682 struct sljit_label *label;
1683
1684 CHECK_ERROR_PTR();
1685 check_sljit_emit_label(compiler);
1686
1687 if (compiler->last_label && compiler->last_label->size == compiler->size)
1688 return compiler->last_label;
1689
1690 label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label));
1691 PTR_FAIL_IF(!label);
1692 set_label(label, compiler);
1693 return label;
1694 }
1695
1696 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, int type)
1697 {
1698 struct sljit_jump *jump;
1699 int cc;
1700
1701 CHECK_ERROR_PTR();
1702 check_sljit_emit_jump(compiler, type);
1703
1704 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1705 PTR_FAIL_IF(!jump);
1706 set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1707 type &= 0xff;
1708
1709 /* In ARM, we don't need to touch the arguments. */
1710 PTR_FAIL_IF(emit_imm32_const(compiler, TMP_REG1, 0));
1711 if (type < SLJIT_JUMP) {
1712 jump->flags |= IS_CONDITIONAL;
1713 cc = get_cc(type);
1714 jump->flags |= cc << 8;
1715 PTR_FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8));
1716 }
1717
1718 jump->addr = compiler->size;
1719 if (type <= SLJIT_JUMP)
1720 PTR_FAIL_IF(push_inst16(compiler, BX | RN3(TMP_REG1)));
1721 else {
1722 jump->flags |= IS_BL;
1723 PTR_FAIL_IF(push_inst16(compiler, BLX | RN3(TMP_REG1)));
1724 }
1725
1726 return jump;
1727 }
1728
1729 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_ijump(struct sljit_compiler *compiler, int type, int src, sljit_w srcw)
1730 {
1731 struct sljit_jump *jump;
1732
1733 CHECK_ERROR();
1734 check_sljit_emit_ijump(compiler, type, src, srcw);
1735
1736 /* In ARM, we don't need to touch the arguments. */
1737 if (src & SLJIT_IMM) {
1738 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1739 FAIL_IF(!jump);
1740 set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_BL : 0));
1741 jump->u.target = srcw;
1742
1743 FAIL_IF(emit_imm32_const(compiler, TMP_REG1, 0));
1744 jump->addr = compiler->size;
1745 FAIL_IF(push_inst16(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RN3(TMP_REG1)));
1746 }
1747 else {
1748 if (src >= SLJIT_TEMPORARY_REG1 && src <= SLJIT_NO_REGISTERS)
1749 return push_inst16(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RN3(src));
1750
1751 FAIL_IF(emit_op_mem(compiler, WORD_SIZE, type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, src, srcw));
1752 if (type >= SLJIT_FAST_CALL)
1753 return push_inst16(compiler, BLX | RN3(TMP_REG1));
1754 }
1755 return SLJIT_SUCCESS;
1756 }
1757
1758 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_cond_value(struct sljit_compiler *compiler, int op, int dst, sljit_w dstw, int type)
1759 {
1760 int dst_r;
1761 sljit_uw cc;
1762
1763 CHECK_ERROR();
1764 check_sljit_emit_cond_value(compiler, op, dst, dstw, type);
1765
1766 if (dst == SLJIT_UNUSED)
1767 return SLJIT_SUCCESS;
1768
1769 cc = get_cc(type);
1770 if (GET_OPCODE(op) == SLJIT_OR && dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) {
1771 FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8));
1772 FAIL_IF(push_inst32(compiler, ORRI | RN4(dst) | RD4(dst) | 0x1));
1773 if (op & SLJIT_SET_E) {
1774 if (reg_map[dst] <= 7)
1775 return push_inst16(compiler, ORRS | RD3(dst) | RN3(dst));
1776 return push_inst32(compiler, ORR_W | SET_FLAGS | RD4(TMP_REG1) | RN4(dst) | RM4(dst));
1777 }
1778 return SLJIT_SUCCESS;
1779 }
1780
1781 dst_r = TMP_REG2;
1782 if (op == SLJIT_MOV && dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS && reg_map[dst] <= 7)
1783 dst_r = dst;
1784
1785 FAIL_IF(push_inst16(compiler, IT | (cc << 4) | (((cc & 0x1) ^ 0x1) << 3) | 0x4));
1786 FAIL_IF(push_inst16(compiler, MOVSI | 0x1 | RDN3(dst_r)));
1787 FAIL_IF(push_inst16(compiler, MOVSI | 0x0 | RDN3(dst_r)));
1788
1789 if (dst_r == TMP_REG2) {
1790 if (GET_OPCODE(op) == SLJIT_OR) {
1791 #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) || (defined SLJIT_DEBUG && SLJIT_DEBUG)
1792 compiler->skip_checks = 1;
1793 #endif
1794 return sljit_emit_op2(compiler, op, dst, dstw, dst, dstw, TMP_REG2, 0);
1795 }
1796 if (dst & SLJIT_MEM)
1797 return emit_op_mem(compiler, WORD_SIZE | STORE, TMP_REG2, dst, dstw);
1798 else
1799 return push_inst16(compiler, MOV | SET_REGS44(dst, TMP_REG2));
1800 }
1801
1802 return SLJIT_SUCCESS;
1803 }
1804
1805 SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, int dst, sljit_w dstw, sljit_w init_value)
1806 {
1807 struct sljit_const *const_;
1808 int dst_r;
1809
1810 CHECK_ERROR_PTR();
1811 check_sljit_emit_const(compiler, dst, dstw, init_value);
1812
1813 const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const));
1814 PTR_FAIL_IF(!const_);
1815 set_const(const_, compiler);
1816
1817 dst_r = (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) ? dst : TMP_REG1;
1818 PTR_FAIL_IF(emit_imm32_const(compiler, dst_r, init_value));
1819
1820 if (dst & SLJIT_MEM)
1821 PTR_FAIL_IF(emit_op_mem(compiler, WORD_SIZE | STORE, dst_r, dst, dstw));
1822 return const_;
1823 }
1824
1825 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr)
1826 {
1827 inline_set_jump_addr(addr, new_addr, 1);
1828 }
1829
1830 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_w new_constant)
1831 {
1832 sljit_uh* inst = (sljit_uh*)addr;
1833 modify_imm32_const(inst, new_constant);
1834 SLJIT_CACHE_FLUSH(inst, inst + 3);
1835 }

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