2 * Stack-less Just-In-Time compiler
4 * Copyright 2009-2012 Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
6 * Redistribution and use in source and binary forms, with or without modification, are
7 * permitted provided that the following conditions are met:
9 * 1. Redistributions of source code must retain the above copyright notice, this list of
10 * conditions and the following disclaimer.
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.
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.
27 SLJIT_API_FUNC_ATTRIBUTE SLJIT_CONST char* sljit_get_platform_name(void)
29 return "ARM-Thumb2" SLJIT_CPUINFO;
32 /* Length of an instruction word. */
33 typedef sljit_ui sljit_ins;
35 /* Last register + 1. */
36 #define TMP_REG1 (SLJIT_NUMBER_OF_REGISTERS + 2)
37 #define TMP_REG2 (SLJIT_NUMBER_OF_REGISTERS + 3)
38 #define TMP_REG3 (SLJIT_NUMBER_OF_REGISTERS + 4)
39 #define TMP_PC (SLJIT_NUMBER_OF_REGISTERS + 5)
42 #define TMP_FREG2 (SLJIT_NUMBER_OF_FLOAT_REGISTERS + 1)
44 /* See sljit_emit_enter and sljit_emit_op0 if you want to change them. */
45 static SLJIT_CONST sljit_ub reg_map[SLJIT_NUMBER_OF_REGISTERS + 6] = {
46 0, 0, 1, 2, 12, 11, 10, 9, 8, 7, 6, 5, 13, 3, 4, 14, 15
49 #define COPY_BITS(src, from, to, bits) \
50 ((from >= to ? (src >> (from - to)) : (src << (to - from))) & (((1 << bits) - 1) << to))
52 /* Thumb16 encodings. */
53 #define RD3(rd) (reg_map[rd])
54 #define RN3(rn) (reg_map[rn] << 3)
55 #define RM3(rm) (reg_map[rm] << 6)
56 #define RDN3(rdn) (reg_map[rdn] << 8)
57 #define IMM3(imm) (imm << 6)
58 #define IMM8(imm) (imm)
60 /* Thumb16 helpers. */
61 #define SET_REGS44(rd, rn) \
62 ((reg_map[rn] << 3) | (reg_map[rd] & 0x7) | ((reg_map[rd] & 0x8) << 4))
63 #define IS_2_LO_REGS(reg1, reg2) \
64 (reg_map[reg1] <= 7 && reg_map[reg2] <= 7)
65 #define IS_3_LO_REGS(reg1, reg2, reg3) \
66 (reg_map[reg1] <= 7 && reg_map[reg2] <= 7 && reg_map[reg3] <= 7)
68 /* Thumb32 encodings. */
69 #define RD4(rd) (reg_map[rd] << 8)
70 #define RN4(rn) (reg_map[rn] << 16)
71 #define RM4(rm) (reg_map[rm])
72 #define RT4(rt) (reg_map[rt] << 12)
73 #define DD4(dd) ((dd) << 12)
74 #define DN4(dn) ((dn) << 16)
77 (COPY_BITS(imm, 2, 12, 3) | ((imm & 0x3) << 6))
79 (COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff))
81 /* --------------------------------------------------------------------- */
82 /* Instrucion forms */
83 /* --------------------------------------------------------------------- */
85 /* dot '.' changed to _
86 I immediate form (possibly followed by number of immediate bits). */
87 #define ADCI 0xf1400000
89 #define ADC_W 0xeb400000
94 #define ADD_W 0xeb000000
95 #define ADDWI 0xf2000000
97 #define ADD_W 0xeb000000
98 #define ADD_WI 0xf1000000
99 #define ANDI 0xf0000000
101 #define AND_W 0xea000000
104 #define ASR_W 0xfa40f000
105 #define ASR_WI 0xea4f0020
106 #define BICI 0xf0200000
110 #define CLZ 0xfab0f080
112 #define CMP_W 0xebb00f00
113 #define EORI 0xf0800000
115 #define EOR_W 0xea800000
119 #define LSL_W 0xfa00f000
120 #define LSL_WI 0xea4f0000
123 #define LSR_W 0xfa20f000
124 #define LSR_WI 0xea4f0010
128 #define MOVT 0xf2c00000
129 #define MOVW 0xf2400000
130 #define MOV_W 0xea4f0000
131 #define MOV_WI 0xf04f0000
132 #define MUL 0xfb00f000
134 #define MVN_W 0xea6f0000
135 #define MVN_WI 0xf06f0000
137 #define ORNI 0xf0600000
138 #define ORRI 0xf0400000
140 #define ORR_W 0xea400000
142 #define POP_W 0xe8bd0000
144 #define PUSH_W 0xe92d0000
145 #define RSB_WI 0xf1c00000
147 #define SBCI 0xf1600000
149 #define SBC_W 0xeb600000
150 #define SMULL 0xfb800000
151 #define STR_SP 0x9000
153 #define SUBSI3 0x1e00
154 #define SUBSI8 0x3800
155 #define SUB_W 0xeba00000
156 #define SUBWI 0xf2a00000
157 #define SUB_SP 0xb080
158 #define SUB_WI 0xf1a00000
160 #define SXTB_W 0xfa4ff080
162 #define SXTH_W 0xfa0ff080
164 #define UMULL 0xfba00000
166 #define UXTB_W 0xfa5ff080
168 #define UXTH_W 0xfa1ff080
169 #define VABS_F32 0xeeb00ac0
170 #define VADD_F32 0xee300a00
171 #define VCMP_F32 0xeeb40a40
172 #define VCVT_F32_S32 0xeeb80ac0
173 #define VCVT_F64_F32 0xeeb70ac0
174 #define VCVT_S32_F32 0xeebd0ac0
175 #define VDIV_F32 0xee800a00
176 #define VMOV_F32 0xeeb00a40
177 #define VMOV 0xee000a10
178 #define VMRS 0xeef1fa10
179 #define VMUL_F32 0xee200a00
180 #define VNEG_F32 0xeeb10a40
181 #define VSTR_F32 0xed000a00
182 #define VSUB_F32 0xee300a40
184 static sljit_si push_inst16(struct sljit_compiler *compiler, sljit_ins inst)
187 SLJIT_ASSERT(!(inst & 0xffff0000));
189 ptr = (sljit_uh*)ensure_buf(compiler, sizeof(sljit_uh));
193 return SLJIT_SUCCESS;
196 static sljit_si push_inst32(struct sljit_compiler *compiler, sljit_ins inst)
198 sljit_uh *ptr = (sljit_uh*)ensure_buf(compiler, sizeof(sljit_ins));
203 return SLJIT_SUCCESS;
206 static SLJIT_INLINE sljit_si emit_imm32_const(struct sljit_compiler *compiler, sljit_si dst, sljit_uw imm)
208 FAIL_IF(push_inst32(compiler, MOVW | RD4(dst) |
209 COPY_BITS(imm, 12, 16, 4) | COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff)));
210 return push_inst32(compiler, MOVT | RD4(dst) |
211 COPY_BITS(imm, 12 + 16, 16, 4) | COPY_BITS(imm, 11 + 16, 26, 1) | COPY_BITS(imm, 8 + 16, 12, 3) | ((imm & 0xff0000) >> 16));
214 static SLJIT_INLINE void modify_imm32_const(sljit_uh *inst, sljit_uw new_imm)
216 sljit_si dst = inst[1] & 0x0f00;
217 SLJIT_ASSERT(((inst[0] & 0xfbf0) == (MOVW >> 16)) && ((inst[2] & 0xfbf0) == (MOVT >> 16)) && dst == (inst[3] & 0x0f00));
218 inst[0] = (MOVW >> 16) | COPY_BITS(new_imm, 12, 0, 4) | COPY_BITS(new_imm, 11, 10, 1);
219 inst[1] = dst | COPY_BITS(new_imm, 8, 12, 3) | (new_imm & 0xff);
220 inst[2] = (MOVT >> 16) | COPY_BITS(new_imm, 12 + 16, 0, 4) | COPY_BITS(new_imm, 11 + 16, 10, 1);
221 inst[3] = dst | COPY_BITS(new_imm, 8 + 16, 12, 3) | ((new_imm & 0xff0000) >> 16);
224 static SLJIT_INLINE sljit_si detect_jump_type(struct sljit_jump *jump, sljit_uh *code_ptr, sljit_uh *code)
228 if (jump->flags & SLJIT_REWRITABLE_JUMP)
231 if (jump->flags & JUMP_ADDR) {
232 /* Branch to ARM code is not optimized yet. */
233 if (!(jump->u.target & 0x1))
235 diff = ((sljit_sw)jump->u.target - (sljit_sw)(code_ptr + 2)) >> 1;
238 SLJIT_ASSERT(jump->flags & JUMP_LABEL);
239 diff = ((sljit_sw)(code + jump->u.label->size) - (sljit_sw)(code_ptr + 2)) >> 1;
242 if (jump->flags & IS_COND) {
243 SLJIT_ASSERT(!(jump->flags & IS_BL));
244 if (diff <= 127 && diff >= -128) {
245 jump->flags |= PATCH_TYPE1;
248 if (diff <= 524287 && diff >= -524288) {
249 jump->flags |= PATCH_TYPE2;
252 /* +1 comes from the prefix IT instruction. */
254 if (diff <= 8388607 && diff >= -8388608) {
255 jump->flags |= PATCH_TYPE3;
259 else if (jump->flags & IS_BL) {
260 if (diff <= 8388607 && diff >= -8388608) {
261 jump->flags |= PATCH_BL;
266 if (diff <= 1023 && diff >= -1024) {
267 jump->flags |= PATCH_TYPE4;
270 if (diff <= 8388607 && diff >= -8388608) {
271 jump->flags |= PATCH_TYPE5;
279 static SLJIT_INLINE void set_jump_instruction(struct sljit_jump *jump)
281 sljit_si type = (jump->flags >> 4) & 0xf;
286 if (SLJIT_UNLIKELY(type == 0)) {
287 modify_imm32_const((sljit_uh*)jump->addr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target);
291 if (jump->flags & JUMP_ADDR) {
292 SLJIT_ASSERT(jump->u.target & 0x1);
293 diff = ((sljit_sw)jump->u.target - (sljit_sw)(jump->addr + 4)) >> 1;
296 diff = ((sljit_sw)(jump->u.label->addr) - (sljit_sw)(jump->addr + 4)) >> 1;
297 jump_inst = (sljit_uh*)jump->addr;
301 /* Encoding T1 of 'B' instruction */
302 SLJIT_ASSERT(diff <= 127 && diff >= -128 && (jump->flags & IS_COND));
303 jump_inst[0] = 0xd000 | (jump->flags & 0xf00) | (diff & 0xff);
306 /* Encoding T3 of 'B' instruction */
307 SLJIT_ASSERT(diff <= 524287 && diff >= -524288 && (jump->flags & IS_COND));
308 jump_inst[0] = 0xf000 | COPY_BITS(jump->flags, 8, 6, 4) | COPY_BITS(diff, 11, 0, 6) | COPY_BITS(diff, 19, 10, 1);
309 jump_inst[1] = 0x8000 | COPY_BITS(diff, 17, 13, 1) | COPY_BITS(diff, 18, 11, 1) | (diff & 0x7ff);
312 SLJIT_ASSERT(jump->flags & IS_COND);
313 *jump_inst++ = IT | ((jump->flags >> 4) & 0xf0) | 0x8;
318 /* Encoding T2 of 'B' instruction */
319 SLJIT_ASSERT(diff <= 1023 && diff >= -1024 && !(jump->flags & IS_COND));
320 jump_inst[0] = 0xe000 | (diff & 0x7ff);
324 SLJIT_ASSERT(diff <= 8388607 && diff >= -8388608);
326 /* Really complex instruction form for branches. */
327 s = (diff >> 23) & 0x1;
328 j1 = (~(diff >> 21) ^ s) & 0x1;
329 j2 = (~(diff >> 22) ^ s) & 0x1;
330 jump_inst[0] = 0xf000 | (s << 10) | COPY_BITS(diff, 11, 0, 10);
331 jump_inst[1] = (j1 << 13) | (j2 << 11) | (diff & 0x7ff);
333 /* The others have a common form. */
334 if (type == 5) /* Encoding T4 of 'B' instruction */
335 jump_inst[1] |= 0x9000;
336 else if (type == 6) /* Encoding T1 of 'BL' instruction */
337 jump_inst[1] |= 0xd000;
342 SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler)
344 struct sljit_memory_fragment *buf;
351 struct sljit_label *label;
352 struct sljit_jump *jump;
353 struct sljit_const *const_;
356 CHECK_PTR(check_sljit_generate_code(compiler));
357 reverse_buf(compiler);
359 code = (sljit_uh*)SLJIT_MALLOC_EXEC(compiler->size * sizeof(sljit_uh));
360 PTR_FAIL_WITH_EXEC_IF(code);
365 label = compiler->labels;
366 jump = compiler->jumps;
367 const_ = compiler->consts;
370 buf_ptr = (sljit_uh*)buf->memory;
371 buf_end = buf_ptr + (buf->used_size >> 1);
373 *code_ptr = *buf_ptr++;
374 /* These structures are ordered by their address. */
375 SLJIT_ASSERT(!label || label->size >= half_count);
376 SLJIT_ASSERT(!jump || jump->addr >= half_count);
377 SLJIT_ASSERT(!const_ || const_->addr >= half_count);
378 if (label && label->size == half_count) {
379 label->addr = ((sljit_uw)code_ptr) | 0x1;
380 label->size = code_ptr - code;
383 if (jump && jump->addr == half_count) {
384 jump->addr = (sljit_uw)code_ptr - ((jump->flags & IS_COND) ? 10 : 8);
385 code_ptr -= detect_jump_type(jump, code_ptr, code);
388 if (const_ && const_->addr == half_count) {
389 const_->addr = (sljit_uw)code_ptr;
390 const_ = const_->next;
394 } while (buf_ptr < buf_end);
399 if (label && label->size == half_count) {
400 label->addr = ((sljit_uw)code_ptr) | 0x1;
401 label->size = code_ptr - code;
405 SLJIT_ASSERT(!label);
407 SLJIT_ASSERT(!const_);
408 SLJIT_ASSERT(code_ptr - code <= (sljit_sw)compiler->size);
410 jump = compiler->jumps;
412 set_jump_instruction(jump);
416 compiler->error = SLJIT_ERR_COMPILED;
417 compiler->executable_size = (code_ptr - code) * sizeof(sljit_uh);
418 SLJIT_CACHE_FLUSH(code, code_ptr);
419 /* Set thumb mode flag. */
420 return (void*)((sljit_uw)code | 0x1);
423 /* --------------------------------------------------------------------- */
424 /* Core code generator functions. */
425 /* --------------------------------------------------------------------- */
427 #define INVALID_IMM 0x80000000
428 static sljit_uw get_imm(sljit_uw imm)
430 /* Thumb immediate form. */
436 if ((imm & 0xffff) == (imm >> 16)) {
437 /* Some special cases. */
439 return (1 << 12) | (imm & 0xff);
441 return (2 << 12) | ((imm >> 8) & 0xff);
442 if ((imm & 0xff00) == ((imm & 0xff) << 8))
443 return (3 << 12) | (imm & 0xff);
446 /* Assembly optimization: count leading zeroes? */
448 if (!(imm & 0xffff0000)) {
452 if (!(imm & 0xff000000)) {
456 if (!(imm & 0xf0000000)) {
460 if (!(imm & 0xc0000000)) {
464 if (!(imm & 0x80000000)) {
468 /* Since imm >= 128, this must be true. */
469 SLJIT_ASSERT(counter <= 31);
471 if (imm & 0x00ffffff)
472 return INVALID_IMM; /* Cannot be encoded. */
474 return ((imm >> 24) & 0x7f) | COPY_BITS(counter, 4, 26, 1) | COPY_BITS(counter, 1, 12, 3) | COPY_BITS(counter, 0, 7, 1);
477 static sljit_si load_immediate(struct sljit_compiler *compiler, sljit_si dst, sljit_uw imm)
481 if (imm >= 0x10000) {
483 if (tmp != INVALID_IMM)
484 return push_inst32(compiler, MOV_WI | RD4(dst) | tmp);
486 if (tmp != INVALID_IMM)
487 return push_inst32(compiler, MVN_WI | RD4(dst) | tmp);
490 /* set low 16 bits, set hi 16 bits to 0. */
491 FAIL_IF(push_inst32(compiler, MOVW | RD4(dst) |
492 COPY_BITS(imm, 12, 16, 4) | COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff)));
494 /* set hi 16 bit if needed. */
496 return push_inst32(compiler, MOVT | RD4(dst) |
497 COPY_BITS(imm, 12 + 16, 16, 4) | COPY_BITS(imm, 11 + 16, 26, 1) | COPY_BITS(imm, 8 + 16, 12, 3) | ((imm & 0xff0000) >> 16));
498 return SLJIT_SUCCESS;
501 #define ARG1_IMM 0x0010000
502 #define ARG2_IMM 0x0020000
503 #define KEEP_FLAGS 0x0040000
504 /* SET_FLAGS must be 0x100000 as it is also the value of S bit (can be used for optimization). */
505 #define SET_FLAGS 0x0100000
506 #define UNUSED_RETURN 0x0200000
507 #define SLOW_DEST 0x0400000
508 #define SLOW_SRC1 0x0800000
509 #define SLOW_SRC2 0x1000000
511 static sljit_si emit_op_imm(struct sljit_compiler *compiler, sljit_si flags, sljit_si dst, sljit_uw arg1, sljit_uw arg2)
513 /* dst must be register, TMP_REG1
514 arg1 must be register, TMP_REG1, imm
515 arg2 must be register, TMP_REG2, imm */
519 if (SLJIT_UNLIKELY((flags & (ARG1_IMM | ARG2_IMM)) == (ARG1_IMM | ARG2_IMM))) {
520 /* Both are immediates. */
522 FAIL_IF(load_immediate(compiler, TMP_REG1, arg1));
526 if (flags & (ARG1_IMM | ARG2_IMM)) {
527 reg = (flags & ARG2_IMM) ? arg1 : arg2;
528 imm = (flags & ARG2_IMM) ? arg2 : arg1;
530 switch (flags & 0xffff) {
533 /* No form with immediate operand. */
536 SLJIT_ASSERT(!(flags & SET_FLAGS) && (flags & ARG2_IMM) && arg1 == TMP_REG1);
537 return load_immediate(compiler, dst, imm);
539 if (!(flags & SET_FLAGS))
540 return load_immediate(compiler, dst, ~imm);
541 /* Since the flags should be set, we just fallback to the register mode.
542 Although some clever things could be done here, "NOT IMM" does not worth the efforts. */
546 if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(reg, dst)) {
548 return push_inst16(compiler, ADDSI3 | IMM3(imm) | RD3(dst) | RN3(reg));
550 return push_inst16(compiler, SUBSI3 | IMM3(nimm) | RD3(dst) | RN3(reg));
553 return push_inst16(compiler, ADDSI8 | IMM8(imm) | RDN3(dst));
555 return push_inst16(compiler, SUBSI8 | IMM8(nimm) | RDN3(dst));
558 if (!(flags & SET_FLAGS)) {
560 return push_inst32(compiler, ADDWI | RD4(dst) | RN4(reg) | IMM12(imm));
562 return push_inst32(compiler, SUBWI | RD4(dst) | RN4(reg) | IMM12(nimm));
565 if (imm != INVALID_IMM)
566 return push_inst32(compiler, ADD_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
570 if (imm != INVALID_IMM)
571 return push_inst32(compiler, ADCI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
574 if (flags & ARG1_IMM) {
575 if (!(flags & KEEP_FLAGS) && imm == 0 && IS_2_LO_REGS(reg, dst))
576 return push_inst16(compiler, RSBSI | RD3(dst) | RN3(reg));
578 if (imm != INVALID_IMM)
579 return push_inst32(compiler, RSB_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
583 if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(reg, dst)) {
585 return push_inst16(compiler, SUBSI3 | IMM3(imm) | RD3(dst) | RN3(reg));
587 return push_inst16(compiler, ADDSI3 | IMM3(nimm) | RD3(dst) | RN3(reg));
590 return push_inst16(compiler, SUBSI8 | IMM8(imm) | RDN3(dst));
592 return push_inst16(compiler, ADDSI8 | IMM8(nimm) | RDN3(dst));
594 if (imm <= 0xff && (flags & UNUSED_RETURN))
595 return push_inst16(compiler, CMPI | IMM8(imm) | RDN3(reg));
597 if (!(flags & SET_FLAGS)) {
599 return push_inst32(compiler, SUBWI | RD4(dst) | RN4(reg) | IMM12(imm));
601 return push_inst32(compiler, ADDWI | RD4(dst) | RN4(reg) | IMM12(nimm));
604 if (imm != INVALID_IMM)
605 return push_inst32(compiler, SUB_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
608 if (flags & ARG1_IMM)
611 if (imm != INVALID_IMM)
612 return push_inst32(compiler, SBCI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
616 if (nimm != INVALID_IMM)
617 return push_inst32(compiler, ANDI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm);
619 if (imm != INVALID_IMM)
620 return push_inst32(compiler, BICI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
624 if (nimm != INVALID_IMM)
625 return push_inst32(compiler, ORRI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm);
627 if (imm != INVALID_IMM)
628 return push_inst32(compiler, ORNI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
632 if (imm != INVALID_IMM)
633 return push_inst32(compiler, EORI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
638 if (flags & ARG1_IMM)
642 if (!(flags & SET_FLAGS))
643 return push_inst16(compiler, MOV | SET_REGS44(dst, reg));
644 if (IS_2_LO_REGS(dst, reg))
645 return push_inst16(compiler, MOVS | RD3(dst) | RN3(reg));
646 return push_inst32(compiler, MOV_W | SET_FLAGS | RD4(dst) | RM4(reg));
648 switch (flags & 0xffff) {
650 if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, reg))
651 return push_inst16(compiler, LSLSI | RD3(dst) | RN3(reg) | (imm << 6));
652 return push_inst32(compiler, LSL_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm));
654 if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, reg))
655 return push_inst16(compiler, LSRSI | RD3(dst) | RN3(reg) | (imm << 6));
656 return push_inst32(compiler, LSR_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm));
657 default: /* SLJIT_ASHR */
658 if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, reg))
659 return push_inst16(compiler, ASRSI | RD3(dst) | RN3(reg) | (imm << 6));
660 return push_inst32(compiler, ASR_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm));
667 if (flags & ARG2_IMM) {
668 FAIL_IF(load_immediate(compiler, TMP_REG2, arg2));
672 FAIL_IF(load_immediate(compiler, TMP_REG1, arg1));
677 /* Both arguments are registers. */
678 switch (flags & 0xffff) {
687 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
689 return SLJIT_SUCCESS;
690 return push_inst16(compiler, MOV | SET_REGS44(dst, arg2));
693 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
694 if (IS_2_LO_REGS(dst, arg2))
695 return push_inst16(compiler, UXTB | RD3(dst) | RN3(arg2));
696 return push_inst32(compiler, UXTB_W | RD4(dst) | RM4(arg2));
699 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
700 if (IS_2_LO_REGS(dst, arg2))
701 return push_inst16(compiler, SXTB | RD3(dst) | RN3(arg2));
702 return push_inst32(compiler, SXTB_W | RD4(dst) | RM4(arg2));
705 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
706 if (IS_2_LO_REGS(dst, arg2))
707 return push_inst16(compiler, UXTH | RD3(dst) | RN3(arg2));
708 return push_inst32(compiler, UXTH_W | RD4(dst) | RM4(arg2));
711 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
712 if (IS_2_LO_REGS(dst, arg2))
713 return push_inst16(compiler, SXTH | RD3(dst) | RN3(arg2));
714 return push_inst32(compiler, SXTH_W | RD4(dst) | RM4(arg2));
716 SLJIT_ASSERT(arg1 == TMP_REG1);
717 if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
718 return push_inst16(compiler, MVNS | RD3(dst) | RN3(arg2));
719 return push_inst32(compiler, MVN_W | (flags & SET_FLAGS) | RD4(dst) | RM4(arg2));
721 SLJIT_ASSERT(arg1 == TMP_REG1);
722 FAIL_IF(push_inst32(compiler, CLZ | RN4(arg2) | RD4(dst) | RM4(arg2)));
723 if (flags & SET_FLAGS) {
724 if (reg_map[dst] <= 7)
725 return push_inst16(compiler, CMPI | RDN3(dst));
726 return push_inst32(compiler, ADD_WI | SET_FLAGS | RN4(dst) | RD4(dst));
728 return SLJIT_SUCCESS;
730 if (!(flags & KEEP_FLAGS) && IS_3_LO_REGS(dst, arg1, arg2))
731 return push_inst16(compiler, ADDS | RD3(dst) | RN3(arg1) | RM3(arg2));
732 if (dst == arg1 && !(flags & SET_FLAGS))
733 return push_inst16(compiler, ADD | SET_REGS44(dst, arg2));
734 return push_inst32(compiler, ADD_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
736 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
737 return push_inst16(compiler, ADCS | RD3(dst) | RN3(arg2));
738 return push_inst32(compiler, ADC_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
740 if (!(flags & KEEP_FLAGS) && IS_3_LO_REGS(dst, arg1, arg2))
741 return push_inst16(compiler, SUBS | RD3(dst) | RN3(arg1) | RM3(arg2));
742 return push_inst32(compiler, SUB_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
744 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
745 return push_inst16(compiler, SBCS | RD3(dst) | RN3(arg2));
746 return push_inst32(compiler, SBC_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
748 if (!(flags & SET_FLAGS))
749 return push_inst32(compiler, MUL | RD4(dst) | RN4(arg1) | RM4(arg2));
750 SLJIT_ASSERT(reg_map[TMP_REG2] <= 7 && dst != TMP_REG2);
751 FAIL_IF(push_inst32(compiler, SMULL | RT4(dst) | RD4(TMP_REG2) | RN4(arg1) | RM4(arg2)));
752 /* cmp TMP_REG2, dst asr #31. */
753 return push_inst32(compiler, CMP_W | RN4(TMP_REG2) | 0x70e0 | RM4(dst));
755 if (!(flags & KEEP_FLAGS)) {
756 if (dst == arg1 && IS_2_LO_REGS(dst, arg2))
757 return push_inst16(compiler, ANDS | RD3(dst) | RN3(arg2));
758 if ((flags & UNUSED_RETURN) && IS_2_LO_REGS(arg1, arg2))
759 return push_inst16(compiler, TST | RD3(arg1) | RN3(arg2));
761 return push_inst32(compiler, AND_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
763 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
764 return push_inst16(compiler, ORRS | RD3(dst) | RN3(arg2));
765 return push_inst32(compiler, ORR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
767 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
768 return push_inst16(compiler, EORS | RD3(dst) | RN3(arg2));
769 return push_inst32(compiler, EOR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
771 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
772 return push_inst16(compiler, LSLS | RD3(dst) | RN3(arg2));
773 return push_inst32(compiler, LSL_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
775 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
776 return push_inst16(compiler, LSRS | RD3(dst) | RN3(arg2));
777 return push_inst32(compiler, LSR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
779 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
780 return push_inst16(compiler, ASRS | RD3(dst) | RN3(arg2));
781 return push_inst32(compiler, ASR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
785 return SLJIT_SUCCESS;
791 #define WORD_SIZE 0x00
792 #define BYTE_SIZE 0x04
793 #define HALF_SIZE 0x08
796 #define ARG_TEST 0x20
798 #define IS_WORD_SIZE(flags) (!(flags & (BYTE_SIZE | HALF_SIZE)))
799 #define OFFSET_CHECK(imm, shift) (!(argw & ~(imm << shift)))
816 static SLJIT_CONST sljit_ins sljit_mem16[12] = {
817 /* w u l */ 0x5800 /* ldr */,
818 /* w u s */ 0x5000 /* str */,
819 /* w s l */ 0x5800 /* ldr */,
820 /* w s s */ 0x5000 /* str */,
822 /* b u l */ 0x5c00 /* ldrb */,
823 /* b u s */ 0x5400 /* strb */,
824 /* b s l */ 0x5600 /* ldrsb */,
825 /* b s s */ 0x5400 /* strb */,
827 /* h u l */ 0x5a00 /* ldrh */,
828 /* h u s */ 0x5200 /* strh */,
829 /* h s l */ 0x5e00 /* ldrsh */,
830 /* h s s */ 0x5200 /* strh */,
833 static SLJIT_CONST sljit_ins sljit_mem16_imm5[12] = {
834 /* w u l */ 0x6800 /* ldr imm5 */,
835 /* w u s */ 0x6000 /* str imm5 */,
836 /* w s l */ 0x6800 /* ldr imm5 */,
837 /* w s s */ 0x6000 /* str imm5 */,
839 /* b u l */ 0x7800 /* ldrb imm5 */,
840 /* b u s */ 0x7000 /* strb imm5 */,
841 /* b s l */ 0x0000 /* not allowed */,
842 /* b s s */ 0x7000 /* strb imm5 */,
844 /* h u l */ 0x8800 /* ldrh imm5 */,
845 /* h u s */ 0x8000 /* strh imm5 */,
846 /* h s l */ 0x0000 /* not allowed */,
847 /* h s s */ 0x8000 /* strh imm5 */,
850 #define MEM_IMM8 0xc00
851 #define MEM_IMM12 0x800000
852 static SLJIT_CONST sljit_ins sljit_mem32[12] = {
853 /* w u l */ 0xf8500000 /* ldr.w */,
854 /* w u s */ 0xf8400000 /* str.w */,
855 /* w s l */ 0xf8500000 /* ldr.w */,
856 /* w s s */ 0xf8400000 /* str.w */,
858 /* b u l */ 0xf8100000 /* ldrb.w */,
859 /* b u s */ 0xf8000000 /* strb.w */,
860 /* b s l */ 0xf9100000 /* ldrsb.w */,
861 /* b s s */ 0xf8000000 /* strb.w */,
863 /* h u l */ 0xf8300000 /* ldrh.w */,
864 /* h u s */ 0xf8200000 /* strsh.w */,
865 /* h s l */ 0xf9300000 /* ldrsh.w */,
866 /* h s s */ 0xf8200000 /* strsh.w */,
869 /* Helper function. Dst should be reg + value, using at most 1 instruction, flags does not set. */
870 static sljit_si emit_set_delta(struct sljit_compiler *compiler, sljit_si dst, sljit_si reg, sljit_sw value)
874 return push_inst32(compiler, ADDWI | RD4(dst) | RN4(reg) | IMM12(value));
875 value = get_imm(value);
876 if (value != INVALID_IMM)
877 return push_inst32(compiler, ADD_WI | RD4(dst) | RN4(reg) | value);
882 return push_inst32(compiler, SUBWI | RD4(dst) | RN4(reg) | IMM12(value));
883 value = get_imm(value);
884 if (value != INVALID_IMM)
885 return push_inst32(compiler, SUB_WI | RD4(dst) | RN4(reg) | value);
887 return SLJIT_ERR_UNSUPPORTED;
890 /* Can perform an operation using at most 1 instruction. */
891 static sljit_si getput_arg_fast(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg, sljit_si arg, sljit_sw argw)
893 sljit_si other_r, shift;
895 SLJIT_ASSERT(arg & SLJIT_MEM);
897 if (SLJIT_UNLIKELY(flags & UPDATE)) {
898 if ((arg & REG_MASK) && !(arg & OFFS_REG_MASK) && argw <= 0xff && argw >= -0xff) {
899 if (SLJIT_UNLIKELY(flags & ARG_TEST))
910 SLJIT_ASSERT(argw >= 0 && (argw & 0xff) <= 0xff);
911 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | MEM_IMM8 | RT4(reg) | RN4(arg) | 0x100 | argw));
917 if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) {
918 if (SLJIT_UNLIKELY(flags & ARG_TEST))
922 other_r = OFFS_REG(arg);
925 if (!argw && IS_3_LO_REGS(reg, arg, other_r))
926 FAIL_IF(push_inst16(compiler, sljit_mem16[flags] | RD3(reg) | RN3(arg) | RM3(other_r)));
928 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(other_r) | (argw << 4)));
932 if (!(arg & REG_MASK) || argw > 0xfff || argw < -0xff)
935 if (SLJIT_UNLIKELY(flags & ARG_TEST))
939 if (IS_2_LO_REGS(reg, arg) && sljit_mem16_imm5[flags]) {
941 if (IS_WORD_SIZE(flags)) {
942 if (OFFSET_CHECK(0x1f, 2))
945 else if (flags & BYTE_SIZE)
947 if (OFFSET_CHECK(0x1f, 0))
951 SLJIT_ASSERT(flags & HALF_SIZE);
952 if (OFFSET_CHECK(0x1f, 1))
957 FAIL_IF(push_inst16(compiler, sljit_mem16_imm5[flags] | RD3(reg) | RN3(arg) | (argw << (6 - shift))));
962 /* SP based immediate. */
963 if (SLJIT_UNLIKELY(arg == SLJIT_SP) && OFFSET_CHECK(0xff, 2) && IS_WORD_SIZE(flags) && reg_map[reg] <= 7) {
964 FAIL_IF(push_inst16(compiler, STR_SP | ((flags & STORE) ? 0 : 0x800) | RDN3(reg) | (argw >> 2)));
969 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(arg) | argw));
971 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | MEM_IMM8 | RT4(reg) | RN4(arg) | -argw));
975 /* see getput_arg below.
976 Note: can_cache is called only for binary operators. Those
977 operators always uses word arguments without write back. */
978 static sljit_si can_cache(sljit_si arg, sljit_sw argw, sljit_si next_arg, sljit_sw next_argw)
981 if ((arg & OFFS_REG_MASK) || !(next_arg & SLJIT_MEM))
984 if (!(arg & REG_MASK)) {
985 diff = argw - next_argw;
986 if (diff <= 0xfff && diff >= -0xfff)
991 if (argw == next_argw)
994 diff = argw - next_argw;
995 if (arg == next_arg && diff <= 0xfff && diff >= -0xfff)
1001 /* Emit the necessary instructions. See can_cache above. */
1002 static sljit_si getput_arg(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg,
1003 sljit_si arg, sljit_sw argw, sljit_si next_arg, sljit_sw next_argw)
1005 sljit_si tmp_r, other_r;
1008 SLJIT_ASSERT(arg & SLJIT_MEM);
1009 if (!(next_arg & SLJIT_MEM)) {
1014 tmp_r = (flags & STORE) ? TMP_REG3 : reg;
1016 if (SLJIT_UNLIKELY((flags & UPDATE) && (arg & REG_MASK))) {
1017 /* Update only applies if a base register exists. */
1018 /* There is no caching here. */
1019 other_r = OFFS_REG(arg);
1024 if (!(argw & ~0xfff)) {
1025 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(arg) | argw));
1026 return push_inst32(compiler, ADDWI | RD4(arg) | RN4(arg) | IMM12(argw));
1029 if (compiler->cache_arg == SLJIT_MEM) {
1030 if (argw == compiler->cache_argw) {
1034 else if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, argw - compiler->cache_argw) != SLJIT_ERR_UNSUPPORTED) {
1035 FAIL_IF(compiler->error);
1036 compiler->cache_argw = argw;
1043 FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1044 compiler->cache_arg = SLJIT_MEM;
1045 compiler->cache_argw = argw;
1052 if (!argw && IS_3_LO_REGS(reg, arg, other_r)) {
1053 FAIL_IF(push_inst16(compiler, sljit_mem16[flags] | RD3(reg) | RN3(arg) | RM3(other_r)));
1054 return push_inst16(compiler, ADD | SET_REGS44(arg, other_r));
1056 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(other_r) | (argw << 4)));
1057 return push_inst32(compiler, ADD_W | RD4(arg) | RN4(arg) | RM4(other_r) | (argw << 6));
1061 SLJIT_ASSERT(!(arg & OFFS_REG_MASK));
1063 if (compiler->cache_arg == arg) {
1064 diff = argw - compiler->cache_argw;
1065 if (!(diff & ~0xfff))
1066 return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(TMP_REG3) | diff);
1067 if (!((compiler->cache_argw - argw) & ~0xff))
1068 return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM8 | RT4(reg) | RN4(TMP_REG3) | (compiler->cache_argw - argw));
1069 if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, diff) != SLJIT_ERR_UNSUPPORTED) {
1070 FAIL_IF(compiler->error);
1071 return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(TMP_REG3) | 0);
1075 next_arg = (arg & REG_MASK) && (arg == next_arg) && (argw != next_argw);
1077 if (arg && compiler->cache_arg == SLJIT_MEM) {
1078 if (compiler->cache_argw == argw)
1079 return push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(TMP_REG3));
1080 if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, argw - compiler->cache_argw) != SLJIT_ERR_UNSUPPORTED) {
1081 FAIL_IF(compiler->error);
1082 compiler->cache_argw = argw;
1083 return push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(TMP_REG3));
1087 compiler->cache_argw = argw;
1088 if (next_arg && emit_set_delta(compiler, TMP_REG3, arg, argw) != SLJIT_ERR_UNSUPPORTED) {
1089 FAIL_IF(compiler->error);
1090 compiler->cache_arg = SLJIT_MEM | arg;
1094 FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1095 compiler->cache_arg = SLJIT_MEM;
1097 diff = argw - next_argw;
1098 if (next_arg && diff <= 0xfff && diff >= -0xfff) {
1099 FAIL_IF(push_inst16(compiler, ADD | SET_REGS44(TMP_REG3, arg)));
1100 compiler->cache_arg = SLJIT_MEM | arg;
1106 return push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(TMP_REG3));
1107 return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(TMP_REG3) | 0);
1110 static SLJIT_INLINE sljit_si emit_op_mem(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg, sljit_si arg, sljit_sw argw)
1112 if (getput_arg_fast(compiler, flags, reg, arg, argw))
1113 return compiler->error;
1114 compiler->cache_arg = 0;
1115 compiler->cache_argw = 0;
1116 return getput_arg(compiler, flags, reg, arg, argw, 0, 0);
1119 static SLJIT_INLINE sljit_si emit_op_mem2(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg, sljit_si arg1, sljit_sw arg1w, sljit_si arg2, sljit_sw arg2w)
1121 if (getput_arg_fast(compiler, flags, reg, arg1, arg1w))
1122 return compiler->error;
1123 return getput_arg(compiler, flags, reg, arg1, arg1w, arg2, arg2w);
1126 /* --------------------------------------------------------------------- */
1128 /* --------------------------------------------------------------------- */
1130 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_enter(struct sljit_compiler *compiler,
1131 sljit_si options, sljit_si args, sljit_si scratches, sljit_si saveds,
1132 sljit_si fscratches, sljit_si fsaveds, sljit_si local_size)
1134 sljit_si size, i, tmp;
1138 CHECK(check_sljit_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size));
1139 set_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size);
1143 tmp = saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - saveds) : SLJIT_FIRST_SAVED_REG;
1144 for (i = SLJIT_S0; i >= tmp; i--)
1145 push |= 1 << reg_map[i];
1147 for (i = scratches; i >= SLJIT_FIRST_SAVED_REG; i--)
1148 push |= 1 << reg_map[i];
1150 FAIL_IF((push & 0xff00)
1151 ? push_inst32(compiler, PUSH_W | (1 << 14) | push)
1152 : push_inst16(compiler, PUSH | (1 << 8) | push));
1154 /* Stack must be aligned to 8 bytes: (LR, R4) */
1155 size = GET_SAVED_REGISTERS_SIZE(scratches, saveds, 2);
1156 local_size = ((size + local_size + 7) & ~7) - size;
1157 compiler->local_size = local_size;
1158 if (local_size > 0) {
1159 if (local_size <= (127 << 2))
1160 FAIL_IF(push_inst16(compiler, SUB_SP | (local_size >> 2)));
1162 FAIL_IF(emit_op_imm(compiler, SLJIT_SUB | ARG2_IMM, SLJIT_SP, SLJIT_SP, local_size));
1166 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_S0, SLJIT_R0)));
1168 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_S1, SLJIT_R1)));
1170 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_S2, SLJIT_R2)));
1172 return SLJIT_SUCCESS;
1175 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_set_context(struct sljit_compiler *compiler,
1176 sljit_si options, sljit_si args, sljit_si scratches, sljit_si saveds,
1177 sljit_si fscratches, sljit_si fsaveds, sljit_si local_size)
1182 CHECK(check_sljit_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size));
1183 set_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size);
1185 size = GET_SAVED_REGISTERS_SIZE(scratches, saveds, 2);
1186 compiler->local_size = ((size + local_size + 7) & ~7) - size;
1187 return SLJIT_SUCCESS;
1190 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_return(struct sljit_compiler *compiler, sljit_si op, sljit_si src, sljit_sw srcw)
1196 CHECK(check_sljit_emit_return(compiler, op, src, srcw));
1198 FAIL_IF(emit_mov_before_return(compiler, op, src, srcw));
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)));
1204 FAIL_IF(emit_op_imm(compiler, SLJIT_ADD | ARG2_IMM, SLJIT_SP, SLJIT_SP, compiler->local_size));
1209 tmp = compiler->saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - compiler->saveds) : SLJIT_FIRST_SAVED_REG;
1210 for (i = SLJIT_S0; i >= tmp; i--)
1211 pop |= 1 << reg_map[i];
1213 for (i = compiler->scratches; i >= SLJIT_FIRST_SAVED_REG; i--)
1214 pop |= 1 << reg_map[i];
1216 return (pop & 0xff00)
1217 ? push_inst32(compiler, POP_W | (1 << 15) | pop)
1218 : push_inst16(compiler, POP | (1 << 8) | pop);
1221 /* --------------------------------------------------------------------- */
1223 /* --------------------------------------------------------------------- */
1229 #if defined(__GNUC__)
1230 extern unsigned int __aeabi_uidivmod(unsigned int numerator, int unsigned denominator);
1231 extern int __aeabi_idivmod(int numerator, int denominator);
1233 #error "Software divmod functions are needed"
1240 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op0(struct sljit_compiler *compiler, sljit_si op)
1242 sljit_sw saved_reg_list[3];
1243 sljit_sw saved_reg_count;
1246 CHECK(check_sljit_emit_op0(compiler, op));
1248 op = GET_OPCODE(op);
1250 case SLJIT_BREAKPOINT:
1251 return push_inst16(compiler, BKPT);
1253 return push_inst16(compiler, NOP);
1256 return push_inst32(compiler, (op == SLJIT_LUMUL ? UMULL : SMULL)
1257 | (reg_map[SLJIT_R1] << 8)
1258 | (reg_map[SLJIT_R0] << 12)
1259 | (reg_map[SLJIT_R0] << 16)
1260 | reg_map[SLJIT_R1]);
1265 SLJIT_COMPILE_ASSERT((SLJIT_UDIVMOD & 0x2) == 0 && SLJIT_UDIVI - 0x2 == SLJIT_UDIVMOD, bad_div_opcode_assignments);
1266 SLJIT_COMPILE_ASSERT(reg_map[2] == 1 && reg_map[3] == 2 && reg_map[4] == 12, bad_register_mapping);
1268 saved_reg_count = 0;
1269 if (compiler->scratches >= 4)
1270 saved_reg_list[saved_reg_count++] = 12;
1271 if (compiler->scratches >= 3)
1272 saved_reg_list[saved_reg_count++] = 2;
1273 if (op >= SLJIT_UDIVI)
1274 saved_reg_list[saved_reg_count++] = 1;
1276 if (saved_reg_count > 0) {
1277 FAIL_IF(push_inst32(compiler, 0xf84d0d00 | (saved_reg_count >= 3 ? 16 : 8)
1278 | (saved_reg_list[0] << 12) /* str rX, [sp, #-8/-16]! */));
1279 if (saved_reg_count >= 2) {
1280 SLJIT_ASSERT(saved_reg_list[1] < 8);
1281 FAIL_IF(push_inst16(compiler, 0x9001 | (saved_reg_list[1] << 8) /* str rX, [sp, #4] */));
1283 if (saved_reg_count >= 3) {
1284 SLJIT_ASSERT(saved_reg_list[2] < 8);
1285 FAIL_IF(push_inst16(compiler, 0x9002 | (saved_reg_list[2] << 8) /* str rX, [sp, #8] */));
1289 #if defined(__GNUC__)
1290 FAIL_IF(sljit_emit_ijump(compiler, SLJIT_FAST_CALL, SLJIT_IMM,
1291 ((op | 0x2) == SLJIT_UDIVI ? SLJIT_FUNC_OFFSET(__aeabi_uidivmod) : SLJIT_FUNC_OFFSET(__aeabi_idivmod))));
1293 #error "Software divmod functions are needed"
1296 if (saved_reg_count > 0) {
1297 if (saved_reg_count >= 3) {
1298 SLJIT_ASSERT(saved_reg_list[2] < 8);
1299 FAIL_IF(push_inst16(compiler, 0x9802 | (saved_reg_list[2] << 8) /* ldr rX, [sp, #8] */));
1301 if (saved_reg_count >= 2) {
1302 SLJIT_ASSERT(saved_reg_list[1] < 8);
1303 FAIL_IF(push_inst16(compiler, 0x9801 | (saved_reg_list[1] << 8) /* ldr rX, [sp, #4] */));
1305 return push_inst32(compiler, 0xf85d0b00 | (saved_reg_count >= 3 ? 16 : 8)
1306 | (saved_reg_list[0] << 12) /* ldr rX, [sp], #8/16 */);
1308 return SLJIT_SUCCESS;
1311 return SLJIT_SUCCESS;
1314 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op1(struct sljit_compiler *compiler, sljit_si op,
1315 sljit_si dst, sljit_sw dstw,
1316 sljit_si src, sljit_sw srcw)
1318 sljit_si dst_r, flags;
1319 sljit_si op_flags = GET_ALL_FLAGS(op);
1322 CHECK(check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw));
1323 ADJUST_LOCAL_OFFSET(dst, dstw);
1324 ADJUST_LOCAL_OFFSET(src, srcw);
1326 compiler->cache_arg = 0;
1327 compiler->cache_argw = 0;
1329 dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG1;
1331 op = GET_OPCODE(op);
1332 if (op >= SLJIT_MOV && op <= SLJIT_MOVU_P) {
1342 if (src & SLJIT_IMM)
1343 srcw = (sljit_ub)srcw;
1346 flags = BYTE_SIZE | SIGNED;
1347 if (src & SLJIT_IMM)
1348 srcw = (sljit_sb)srcw;
1352 if (src & SLJIT_IMM)
1353 srcw = (sljit_uh)srcw;
1356 flags = HALF_SIZE | SIGNED;
1357 if (src & SLJIT_IMM)
1358 srcw = (sljit_sh)srcw;
1364 flags = WORD_SIZE | UPDATE;
1367 flags = BYTE_SIZE | UPDATE;
1368 if (src & SLJIT_IMM)
1369 srcw = (sljit_ub)srcw;
1372 flags = BYTE_SIZE | SIGNED | UPDATE;
1373 if (src & SLJIT_IMM)
1374 srcw = (sljit_sb)srcw;
1377 flags = HALF_SIZE | UPDATE;
1378 if (src & SLJIT_IMM)
1379 srcw = (sljit_uh)srcw;
1382 flags = HALF_SIZE | SIGNED | UPDATE;
1383 if (src & SLJIT_IMM)
1384 srcw = (sljit_sh)srcw;
1387 SLJIT_ASSERT_STOP();
1392 if (src & SLJIT_IMM)
1393 FAIL_IF(emit_op_imm(compiler, SLJIT_MOV | ARG2_IMM, dst_r, TMP_REG1, srcw));
1394 else if (src & SLJIT_MEM) {
1395 if (getput_arg_fast(compiler, flags, dst_r, src, srcw))
1396 FAIL_IF(compiler->error);
1398 FAIL_IF(getput_arg(compiler, flags, dst_r, src, srcw, dst, dstw));
1400 if (dst_r != TMP_REG1)
1401 return emit_op_imm(compiler, op, dst_r, TMP_REG1, src);
1405 if (dst & SLJIT_MEM) {
1406 if (getput_arg_fast(compiler, flags | STORE, dst_r, dst, dstw))
1407 return compiler->error;
1409 return getput_arg(compiler, flags | STORE, dst_r, dst, dstw, 0, 0);
1411 return SLJIT_SUCCESS;
1414 if (op == SLJIT_NEG) {
1415 #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \
1416 || (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS)
1417 compiler->skip_checks = 1;
1419 return sljit_emit_op2(compiler, SLJIT_SUB | op_flags, dst, dstw, SLJIT_IMM, 0, src, srcw);
1422 flags = (GET_FLAGS(op_flags) ? SET_FLAGS : 0) | ((op_flags & SLJIT_KEEP_FLAGS) ? KEEP_FLAGS : 0);
1423 if (src & SLJIT_MEM) {
1424 if (getput_arg_fast(compiler, WORD_SIZE, TMP_REG2, src, srcw))
1425 FAIL_IF(compiler->error);
1427 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src, srcw, dst, dstw));
1431 if (src & SLJIT_IMM)
1436 emit_op_imm(compiler, flags | op, dst_r, TMP_REG1, srcw);
1438 if (dst & SLJIT_MEM) {
1439 if (getput_arg_fast(compiler, flags | STORE, dst_r, dst, dstw))
1440 return compiler->error;
1442 return getput_arg(compiler, flags | STORE, dst_r, dst, dstw, 0, 0);
1444 return SLJIT_SUCCESS;
1447 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op2(struct sljit_compiler *compiler, sljit_si op,
1448 sljit_si dst, sljit_sw dstw,
1449 sljit_si src1, sljit_sw src1w,
1450 sljit_si src2, sljit_sw src2w)
1452 sljit_si dst_r, flags;
1455 CHECK(check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w));
1456 ADJUST_LOCAL_OFFSET(dst, dstw);
1457 ADJUST_LOCAL_OFFSET(src1, src1w);
1458 ADJUST_LOCAL_OFFSET(src2, src2w);
1460 compiler->cache_arg = 0;
1461 compiler->cache_argw = 0;
1463 dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG1;
1464 flags = (GET_FLAGS(op) ? SET_FLAGS : 0) | ((op & SLJIT_KEEP_FLAGS) ? KEEP_FLAGS : 0);
1466 if ((dst & SLJIT_MEM) && !getput_arg_fast(compiler, WORD_SIZE | STORE | ARG_TEST, TMP_REG1, dst, dstw))
1469 if (src1 & SLJIT_MEM) {
1470 if (getput_arg_fast(compiler, WORD_SIZE, TMP_REG1, src1, src1w))
1471 FAIL_IF(compiler->error);
1475 if (src2 & SLJIT_MEM) {
1476 if (getput_arg_fast(compiler, WORD_SIZE, TMP_REG2, src2, src2w))
1477 FAIL_IF(compiler->error);
1482 if ((flags & (SLOW_SRC1 | SLOW_SRC2)) == (SLOW_SRC1 | SLOW_SRC2)) {
1483 if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
1484 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src2, src2w, src1, src1w));
1485 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG1, src1, src1w, dst, dstw));
1488 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG1, src1, src1w, src2, src2w));
1489 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src2, src2w, dst, dstw));
1492 else if (flags & SLOW_SRC1)
1493 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG1, src1, src1w, dst, dstw));
1494 else if (flags & SLOW_SRC2)
1495 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src2, src2w, dst, dstw));
1497 if (src1 & SLJIT_MEM)
1499 if (src2 & SLJIT_MEM)
1502 if (src1 & SLJIT_IMM)
1506 if (src2 & SLJIT_IMM)
1511 if (dst == SLJIT_UNUSED)
1512 flags |= UNUSED_RETURN;
1514 emit_op_imm(compiler, flags | GET_OPCODE(op), dst_r, src1w, src2w);
1516 if (dst & SLJIT_MEM) {
1517 if (!(flags & SLOW_DEST)) {
1518 getput_arg_fast(compiler, WORD_SIZE | STORE, dst_r, dst, dstw);
1519 return compiler->error;
1521 return getput_arg(compiler, WORD_SIZE | STORE, TMP_REG1, dst, dstw, 0, 0);
1523 return SLJIT_SUCCESS;
1526 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_get_register_index(sljit_si reg)
1528 CHECK_REG_INDEX(check_sljit_get_register_index(reg));
1529 return reg_map[reg];
1532 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_get_float_register_index(sljit_si reg)
1534 CHECK_REG_INDEX(check_sljit_get_float_register_index(reg));
1538 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op_custom(struct sljit_compiler *compiler,
1539 void *instruction, sljit_si size)
1542 CHECK(check_sljit_emit_op_custom(compiler, instruction, size));
1545 return push_inst16(compiler, *(sljit_uh*)instruction);
1546 return push_inst32(compiler, *(sljit_ins*)instruction);
1549 /* --------------------------------------------------------------------- */
1550 /* Floating point operators */
1551 /* --------------------------------------------------------------------- */
1553 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_is_fpu_available(void)
1555 #ifdef SLJIT_IS_FPU_AVAILABLE
1556 return SLJIT_IS_FPU_AVAILABLE;
1558 /* Available by default. */
1563 #define FPU_LOAD (1 << 20)
1565 static sljit_si emit_fop_mem(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg, sljit_si arg, sljit_sw argw)
1569 sljit_sw inst = VSTR_F32 | (flags & (SLJIT_SINGLE_OP | FPU_LOAD));
1571 SLJIT_ASSERT(arg & SLJIT_MEM);
1573 /* Fast loads and stores. */
1574 if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) {
1575 FAIL_IF(push_inst32(compiler, ADD_W | RD4(TMP_REG2) | RN4(arg & REG_MASK) | RM4(OFFS_REG(arg)) | ((argw & 0x3) << 6)));
1576 arg = SLJIT_MEM | TMP_REG2;
1580 if ((arg & REG_MASK) && (argw & 0x3) == 0) {
1581 if (!(argw & ~0x3fc))
1582 return push_inst32(compiler, inst | 0x800000 | RN4(arg & REG_MASK) | DD4(reg) | (argw >> 2));
1583 if (!(-argw & ~0x3fc))
1584 return push_inst32(compiler, inst | RN4(arg & REG_MASK) | DD4(reg) | (-argw >> 2));
1588 SLJIT_ASSERT(!(arg & OFFS_REG_MASK));
1589 if (compiler->cache_arg == arg) {
1590 tmp = argw - compiler->cache_argw;
1591 if (!(tmp & ~0x3fc))
1592 return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG3) | DD4(reg) | (tmp >> 2));
1593 if (!(-tmp & ~0x3fc))
1594 return push_inst32(compiler, inst | RN4(TMP_REG3) | DD4(reg) | (-tmp >> 2));
1595 if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, tmp) != SLJIT_ERR_UNSUPPORTED) {
1596 FAIL_IF(compiler->error);
1597 compiler->cache_argw = argw;
1598 return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG3) | DD4(reg));
1602 if (arg & REG_MASK) {
1603 if (emit_set_delta(compiler, TMP_REG1, arg & REG_MASK, argw) != SLJIT_ERR_UNSUPPORTED) {
1604 FAIL_IF(compiler->error);
1605 return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG1) | DD4(reg));
1607 imm = get_imm(argw & ~0x3fc);
1608 if (imm != INVALID_IMM) {
1609 FAIL_IF(push_inst32(compiler, ADD_WI | RD4(TMP_REG1) | RN4(arg & REG_MASK) | imm));
1610 return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG1) | DD4(reg) | ((argw & 0x3fc) >> 2));
1612 imm = get_imm(-argw & ~0x3fc);
1613 if (imm != INVALID_IMM) {
1615 FAIL_IF(push_inst32(compiler, SUB_WI | RD4(TMP_REG1) | RN4(arg & REG_MASK) | imm));
1616 return push_inst32(compiler, inst | RN4(TMP_REG1) | DD4(reg) | ((argw & 0x3fc) >> 2));
1620 compiler->cache_arg = arg;
1621 compiler->cache_argw = argw;
1623 FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1625 FAIL_IF(push_inst16(compiler, ADD | SET_REGS44(TMP_REG3, (arg & REG_MASK))));
1626 return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG3) | DD4(reg));
1629 static SLJIT_INLINE sljit_si sljit_emit_fop1_convw_fromd(struct sljit_compiler *compiler, sljit_si op,
1630 sljit_si dst, sljit_sw dstw,
1631 sljit_si src, sljit_sw srcw)
1633 if (src & SLJIT_MEM) {
1634 FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, TMP_FREG1, src, srcw));
1638 FAIL_IF(push_inst32(compiler, VCVT_S32_F32 | (op & SLJIT_SINGLE_OP) | DD4(TMP_FREG1) | DM4(src)));
1640 if (dst == SLJIT_UNUSED)
1641 return SLJIT_SUCCESS;
1643 if (FAST_IS_REG(dst))
1644 return push_inst32(compiler, VMOV | (1 << 20) | RT4(dst) | DN4(TMP_FREG1));
1646 /* Store the integer value from a VFP register. */
1647 return emit_fop_mem(compiler, 0, TMP_FREG1, dst, dstw);
1650 static SLJIT_INLINE sljit_si sljit_emit_fop1_convd_fromw(struct sljit_compiler *compiler, sljit_si op,
1651 sljit_si dst, sljit_sw dstw,
1652 sljit_si src, sljit_sw srcw)
1654 sljit_si dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1;
1656 if (FAST_IS_REG(src))
1657 FAIL_IF(push_inst32(compiler, VMOV | RT4(src) | DN4(TMP_FREG1)));
1658 else if (src & SLJIT_MEM) {
1659 /* Load the integer value into a VFP register. */
1660 FAIL_IF(emit_fop_mem(compiler, FPU_LOAD, TMP_FREG1, src, srcw));
1663 FAIL_IF(load_immediate(compiler, TMP_REG1, srcw));
1664 FAIL_IF(push_inst32(compiler, VMOV | RT4(TMP_REG1) | DN4(TMP_FREG1)));
1667 FAIL_IF(push_inst32(compiler, VCVT_F32_S32 | (op & SLJIT_SINGLE_OP) | DD4(dst_r) | DM4(TMP_FREG1)));
1669 if (dst & SLJIT_MEM)
1670 return emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP), TMP_FREG1, dst, dstw);
1671 return SLJIT_SUCCESS;
1674 static SLJIT_INLINE sljit_si sljit_emit_fop1_cmp(struct sljit_compiler *compiler, sljit_si op,
1675 sljit_si src1, sljit_sw src1w,
1676 sljit_si src2, sljit_sw src2w)
1678 if (src1 & SLJIT_MEM) {
1679 emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, TMP_FREG1, src1, src1w);
1683 if (src2 & SLJIT_MEM) {
1684 emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, TMP_FREG2, src2, src2w);
1688 FAIL_IF(push_inst32(compiler, VCMP_F32 | (op & SLJIT_SINGLE_OP) | DD4(src1) | DM4(src2)));
1689 return push_inst32(compiler, VMRS);
1692 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fop1(struct sljit_compiler *compiler, sljit_si op,
1693 sljit_si dst, sljit_sw dstw,
1694 sljit_si src, sljit_sw srcw)
1699 compiler->cache_arg = 0;
1700 compiler->cache_argw = 0;
1701 if (GET_OPCODE(op) != SLJIT_CONVD_FROMS)
1702 op ^= SLJIT_SINGLE_OP;
1704 SLJIT_COMPILE_ASSERT((SLJIT_SINGLE_OP == 0x100), float_transfer_bit_error);
1705 SELECT_FOP1_OPERATION_WITH_CHECKS(compiler, op, dst, dstw, src, srcw);
1707 dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1;
1709 if (src & SLJIT_MEM) {
1710 emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, dst_r, src, srcw);
1714 switch (GET_OPCODE(op)) {
1717 if (dst_r != TMP_FREG1)
1718 FAIL_IF(push_inst32(compiler, VMOV_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst_r) | DM4(src)));
1724 FAIL_IF(push_inst32(compiler, VNEG_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst_r) | DM4(src)));
1727 FAIL_IF(push_inst32(compiler, VABS_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst_r) | DM4(src)));
1729 case SLJIT_CONVD_FROMS:
1730 FAIL_IF(push_inst32(compiler, VCVT_F64_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst_r) | DM4(src)));
1731 op ^= SLJIT_SINGLE_OP;
1735 if (dst & SLJIT_MEM)
1736 return emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP), dst_r, dst, dstw);
1737 return SLJIT_SUCCESS;
1740 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fop2(struct sljit_compiler *compiler, sljit_si op,
1741 sljit_si dst, sljit_sw dstw,
1742 sljit_si src1, sljit_sw src1w,
1743 sljit_si src2, sljit_sw src2w)
1748 CHECK(check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w));
1749 ADJUST_LOCAL_OFFSET(dst, dstw);
1750 ADJUST_LOCAL_OFFSET(src1, src1w);
1751 ADJUST_LOCAL_OFFSET(src2, src2w);
1753 compiler->cache_arg = 0;
1754 compiler->cache_argw = 0;
1755 op ^= SLJIT_SINGLE_OP;
1757 dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1;
1758 if (src1 & SLJIT_MEM) {
1759 emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, TMP_FREG1, src1, src1w);
1762 if (src2 & SLJIT_MEM) {
1763 emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, TMP_FREG2, src2, src2w);
1767 switch (GET_OPCODE(op)) {
1769 FAIL_IF(push_inst32(compiler, VADD_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst_r) | DN4(src1) | DM4(src2)));
1772 FAIL_IF(push_inst32(compiler, VSUB_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst_r) | DN4(src1) | DM4(src2)));
1775 FAIL_IF(push_inst32(compiler, VMUL_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst_r) | DN4(src1) | DM4(src2)));
1778 FAIL_IF(push_inst32(compiler, VDIV_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst_r) | DN4(src1) | DM4(src2)));
1782 if (!(dst & SLJIT_MEM))
1783 return SLJIT_SUCCESS;
1784 return emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP), TMP_FREG1, dst, dstw);
1789 /* --------------------------------------------------------------------- */
1790 /* Other instructions */
1791 /* --------------------------------------------------------------------- */
1793 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_si dst, sljit_sw dstw)
1796 CHECK(check_sljit_emit_fast_enter(compiler, dst, dstw));
1797 ADJUST_LOCAL_OFFSET(dst, dstw);
1799 /* For UNUSED dst. Uncommon, but possible. */
1800 if (dst == SLJIT_UNUSED)
1801 return SLJIT_SUCCESS;
1803 if (FAST_IS_REG(dst))
1804 return push_inst16(compiler, MOV | SET_REGS44(dst, TMP_REG3));
1807 if (getput_arg_fast(compiler, WORD_SIZE | STORE, TMP_REG3, dst, dstw))
1808 return compiler->error;
1809 /* TMP_REG3 is used for caching. */
1810 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(TMP_REG2, TMP_REG3)));
1811 compiler->cache_arg = 0;
1812 compiler->cache_argw = 0;
1813 return getput_arg(compiler, WORD_SIZE | STORE, TMP_REG2, dst, dstw, 0, 0);
1816 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fast_return(struct sljit_compiler *compiler, sljit_si src, sljit_sw srcw)
1819 CHECK(check_sljit_emit_fast_return(compiler, src, srcw));
1820 ADJUST_LOCAL_OFFSET(src, srcw);
1822 if (FAST_IS_REG(src))
1823 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(TMP_REG3, src)));
1824 else if (src & SLJIT_MEM) {
1825 if (getput_arg_fast(compiler, WORD_SIZE, TMP_REG3, src, srcw))
1826 FAIL_IF(compiler->error);
1828 compiler->cache_arg = 0;
1829 compiler->cache_argw = 0;
1830 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src, srcw, 0, 0));
1831 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(TMP_REG3, TMP_REG2)));
1834 else if (src & SLJIT_IMM)
1835 FAIL_IF(load_immediate(compiler, TMP_REG3, srcw));
1836 return push_inst16(compiler, BLX | RN3(TMP_REG3));
1839 /* --------------------------------------------------------------------- */
1840 /* Conditional instructions */
1841 /* --------------------------------------------------------------------- */
1843 static sljit_uw get_cc(sljit_si type)
1847 case SLJIT_MUL_NOT_OVERFLOW:
1851 case SLJIT_NOT_EQUAL:
1852 case SLJIT_MUL_OVERFLOW:
1853 case SLJIT_D_NOT_EQUAL:
1860 case SLJIT_GREATER_EQUAL:
1861 case SLJIT_D_GREATER_EQUAL:
1865 case SLJIT_D_GREATER:
1868 case SLJIT_LESS_EQUAL:
1869 case SLJIT_D_LESS_EQUAL:
1872 case SLJIT_SIG_LESS:
1875 case SLJIT_SIG_GREATER_EQUAL:
1878 case SLJIT_SIG_GREATER:
1881 case SLJIT_SIG_LESS_EQUAL:
1884 case SLJIT_OVERFLOW:
1885 case SLJIT_D_UNORDERED:
1888 case SLJIT_NOT_OVERFLOW:
1889 case SLJIT_D_ORDERED:
1892 default: /* SLJIT_JUMP */
1893 SLJIT_ASSERT_STOP();
1898 SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler)
1900 struct sljit_label *label;
1903 CHECK_PTR(check_sljit_emit_label(compiler));
1905 if (compiler->last_label && compiler->last_label->size == compiler->size)
1906 return compiler->last_label;
1908 label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label));
1909 PTR_FAIL_IF(!label);
1910 set_label(label, compiler);
1914 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, sljit_si type)
1916 struct sljit_jump *jump;
1920 CHECK_PTR(check_sljit_emit_jump(compiler, type));
1922 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1924 set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1927 /* In ARM, we don't need to touch the arguments. */
1928 PTR_FAIL_IF(emit_imm32_const(compiler, TMP_REG1, 0));
1929 if (type < SLJIT_JUMP) {
1930 jump->flags |= IS_COND;
1932 jump->flags |= cc << 8;
1933 PTR_FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8));
1936 jump->addr = compiler->size;
1937 if (type <= SLJIT_JUMP)
1938 PTR_FAIL_IF(push_inst16(compiler, BX | RN3(TMP_REG1)));
1940 jump->flags |= IS_BL;
1941 PTR_FAIL_IF(push_inst16(compiler, BLX | RN3(TMP_REG1)));
1947 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_ijump(struct sljit_compiler *compiler, sljit_si type, sljit_si src, sljit_sw srcw)
1949 struct sljit_jump *jump;
1952 CHECK(check_sljit_emit_ijump(compiler, type, src, srcw));
1953 ADJUST_LOCAL_OFFSET(src, srcw);
1955 /* In ARM, we don't need to touch the arguments. */
1956 if (!(src & SLJIT_IMM)) {
1957 if (FAST_IS_REG(src))
1958 return push_inst16(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RN3(src));
1960 FAIL_IF(emit_op_mem(compiler, WORD_SIZE, type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, src, srcw));
1961 if (type >= SLJIT_FAST_CALL)
1962 return push_inst16(compiler, BLX | RN3(TMP_REG1));
1965 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1967 set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_BL : 0));
1968 jump->u.target = srcw;
1970 FAIL_IF(emit_imm32_const(compiler, TMP_REG1, 0));
1971 jump->addr = compiler->size;
1972 return push_inst16(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RN3(TMP_REG1));
1975 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op_flags(struct sljit_compiler *compiler, sljit_si op,
1976 sljit_si dst, sljit_sw dstw,
1977 sljit_si src, sljit_sw srcw,
1980 sljit_si dst_r, flags = GET_ALL_FLAGS(op);
1984 CHECK(check_sljit_emit_op_flags(compiler, op, dst, dstw, src, srcw, type));
1985 ADJUST_LOCAL_OFFSET(dst, dstw);
1986 ADJUST_LOCAL_OFFSET(src, srcw);
1988 if (dst == SLJIT_UNUSED)
1989 return SLJIT_SUCCESS;
1991 op = GET_OPCODE(op);
1992 cc = get_cc(type & 0xff);
1993 dst_r = FAST_IS_REG(dst) ? dst : TMP_REG2;
1995 if (op < SLJIT_ADD) {
1996 FAIL_IF(push_inst16(compiler, IT | (cc << 4) | (((cc & 0x1) ^ 0x1) << 3) | 0x4));
1997 if (reg_map[dst_r] > 7) {
1998 FAIL_IF(push_inst32(compiler, MOV_WI | RD4(dst_r) | 1));
1999 FAIL_IF(push_inst32(compiler, MOV_WI | RD4(dst_r) | 0));
2001 FAIL_IF(push_inst16(compiler, MOVSI | RDN3(dst_r) | 1));
2002 FAIL_IF(push_inst16(compiler, MOVSI | RDN3(dst_r) | 0));
2004 if (dst_r != TMP_REG2)
2005 return SLJIT_SUCCESS;
2006 return emit_op_mem(compiler, WORD_SIZE | STORE, TMP_REG2, dst, dstw);
2009 ins = (op == SLJIT_AND ? ANDI : (op == SLJIT_OR ? ORRI : EORI));
2010 if ((op == SLJIT_OR || op == SLJIT_XOR) && FAST_IS_REG(dst) && dst == src) {
2011 /* Does not change the other bits. */
2012 FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8));
2013 FAIL_IF(push_inst32(compiler, ins | RN4(src) | RD4(dst) | 1));
2014 if (flags & SLJIT_SET_E) {
2015 /* The condition must always be set, even if the ORRI/EORI is not executed above. */
2016 if (reg_map[dst] <= 7)
2017 return push_inst16(compiler, MOVS | RD3(TMP_REG1) | RN3(dst));
2018 return push_inst32(compiler, MOV_W | SET_FLAGS | RD4(TMP_REG1) | RM4(dst));
2020 return SLJIT_SUCCESS;
2023 compiler->cache_arg = 0;
2024 compiler->cache_argw = 0;
2025 if (src & SLJIT_MEM) {
2026 FAIL_IF(emit_op_mem2(compiler, WORD_SIZE, TMP_REG2, src, srcw, dst, dstw));
2029 } else if (src & SLJIT_IMM) {
2030 FAIL_IF(load_immediate(compiler, TMP_REG2, srcw));
2035 if (op == SLJIT_AND || src != dst_r) {
2036 FAIL_IF(push_inst16(compiler, IT | (cc << 4) | (((cc & 0x1) ^ 0x1) << 3) | 0x4));
2037 FAIL_IF(push_inst32(compiler, ins | RN4(src) | RD4(dst_r) | 1));
2038 FAIL_IF(push_inst32(compiler, ins | RN4(src) | RD4(dst_r) | 0));
2041 FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8));
2042 FAIL_IF(push_inst32(compiler, ins | RN4(src) | RD4(dst_r) | 1));
2045 if (dst_r == TMP_REG2)
2046 FAIL_IF(emit_op_mem2(compiler, WORD_SIZE | STORE, TMP_REG2, dst, dstw, 0, 0));
2048 if (flags & SLJIT_SET_E) {
2049 /* The condition must always be set, even if the ORR/EORI is not executed above. */
2050 if (reg_map[dst_r] <= 7)
2051 return push_inst16(compiler, MOVS | RD3(TMP_REG1) | RN3(dst_r));
2052 return push_inst32(compiler, MOV_W | SET_FLAGS | RD4(TMP_REG1) | RM4(dst_r));
2054 return SLJIT_SUCCESS;
2057 SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, sljit_si dst, sljit_sw dstw, sljit_sw init_value)
2059 struct sljit_const *const_;
2063 CHECK_PTR(check_sljit_emit_const(compiler, dst, dstw, init_value));
2064 ADJUST_LOCAL_OFFSET(dst, dstw);
2066 const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const));
2067 PTR_FAIL_IF(!const_);
2068 set_const(const_, compiler);
2070 dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG1;
2071 PTR_FAIL_IF(emit_imm32_const(compiler, dst_r, init_value));
2073 if (dst & SLJIT_MEM)
2074 PTR_FAIL_IF(emit_op_mem(compiler, WORD_SIZE | STORE, dst_r, dst, dstw));
2078 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr)
2080 sljit_uh *inst = (sljit_uh*)addr;
2081 modify_imm32_const(inst, new_addr);
2082 SLJIT_CACHE_FLUSH(inst, inst + 4);
2085 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant)
2087 sljit_uh *inst = (sljit_uh*)addr;
2088 modify_imm32_const(inst, new_constant);
2089 SLJIT_CACHE_FLUSH(inst, inst + 4);