1 /*
2 * Stack-less Just-In-Time compiler
3 *
4 * Copyright Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without modification, are
7 * permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice, this list of
10 * conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
13 * of conditions and the following disclaimer in the documentation and/or other materials
14 * provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
19 * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
21 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
22 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 /* Latest MIPS architecture. */
28 /* Automatically detect SLJIT_MIPS_R1 */
29
sljit_get_platform_name(void)30 SLJIT_API_FUNC_ATTRIBUTE const char* sljit_get_platform_name(void)
31 {
32 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
33 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
34 return "MIPS32-R1" SLJIT_CPUINFO;
35 #else
36 return "MIPS64-R1" SLJIT_CPUINFO;
37 #endif
38 #else /* SLJIT_MIPS_R1 */
39 return "MIPS III" SLJIT_CPUINFO;
40 #endif
41 }
42
43 /* Length of an instruction word
44 Both for mips-32 and mips-64 */
45 typedef sljit_u32 sljit_ins;
46
47 #define TMP_REG1 (SLJIT_NUMBER_OF_REGISTERS + 2)
48 #define TMP_REG2 (SLJIT_NUMBER_OF_REGISTERS + 3)
49 #define TMP_REG3 (SLJIT_NUMBER_OF_REGISTERS + 4)
50
51 /* For position independent code, t9 must contain the function address. */
52 #define PIC_ADDR_REG TMP_REG2
53
54 /* Floating point status register. */
55 #define FCSR_REG 31
56 /* Return address register. */
57 #define RETURN_ADDR_REG 31
58
59 /* Flags are kept in volatile registers. */
60 #define EQUAL_FLAG 31
61 #define OTHER_FLAG 1
62
63 #define TMP_FREG1 (0)
64 #define TMP_FREG2 ((SLJIT_NUMBER_OF_FLOAT_REGISTERS + 1) << 1)
65
66 static const sljit_u8 reg_map[SLJIT_NUMBER_OF_REGISTERS + 5] = {
67 0, 2, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 24, 23, 22, 21, 20, 19, 18, 17, 16, 29, 3, 25, 4
68 };
69
70 /* --------------------------------------------------------------------- */
71 /* Instrucion forms */
72 /* --------------------------------------------------------------------- */
73
74 #define S(s) (reg_map[s] << 21)
75 #define T(t) (reg_map[t] << 16)
76 #define D(d) (reg_map[d] << 11)
77 /* Absolute registers. */
78 #define SA(s) ((s) << 21)
79 #define TA(t) ((t) << 16)
80 #define DA(d) ((d) << 11)
81 #define FT(t) ((t) << 16)
82 #define FS(s) ((s) << 11)
83 #define FD(d) ((d) << 6)
84 #define IMM(imm) ((imm) & 0xffff)
85 #define SH_IMM(imm) ((imm) << 6)
86
87 #define DR(dr) (reg_map[dr])
88 #define HI(opcode) ((opcode) << 26)
89 #define LO(opcode) (opcode)
90 /* S = (16 << 21) D = (17 << 21) */
91 #define FMT_S (16 << 21)
92
93 #define ABS_S (HI(17) | FMT_S | LO(5))
94 #define ADD_S (HI(17) | FMT_S | LO(0))
95 #define ADDIU (HI(9))
96 #define ADDU (HI(0) | LO(33))
97 #define AND (HI(0) | LO(36))
98 #define ANDI (HI(12))
99 #define B (HI(4))
100 #define BAL (HI(1) | (17 << 16))
101 #define BC1F (HI(17) | (8 << 21))
102 #define BC1T (HI(17) | (8 << 21) | (1 << 16))
103 #define BEQ (HI(4))
104 #define BGEZ (HI(1) | (1 << 16))
105 #define BGTZ (HI(7))
106 #define BLEZ (HI(6))
107 #define BLTZ (HI(1) | (0 << 16))
108 #define BNE (HI(5))
109 #define BREAK (HI(0) | LO(13))
110 #define CFC1 (HI(17) | (2 << 21))
111 #define C_UN_S (HI(17) | FMT_S | LO(49))
112 #define C_UEQ_S (HI(17) | FMT_S | LO(51))
113 #define C_ULE_S (HI(17) | FMT_S | LO(55))
114 #define C_ULT_S (HI(17) | FMT_S | LO(53))
115 #define CVT_S_S (HI(17) | FMT_S | LO(32))
116 #define DADDIU (HI(25))
117 #define DADDU (HI(0) | LO(45))
118 #define DDIV (HI(0) | LO(30))
119 #define DDIVU (HI(0) | LO(31))
120 #define DIV (HI(0) | LO(26))
121 #define DIVU (HI(0) | LO(27))
122 #define DIV_S (HI(17) | FMT_S | LO(3))
123 #define DMULT (HI(0) | LO(28))
124 #define DMULTU (HI(0) | LO(29))
125 #define DSLL (HI(0) | LO(56))
126 #define DSLL32 (HI(0) | LO(60))
127 #define DSLLV (HI(0) | LO(20))
128 #define DSRA (HI(0) | LO(59))
129 #define DSRA32 (HI(0) | LO(63))
130 #define DSRAV (HI(0) | LO(23))
131 #define DSRL (HI(0) | LO(58))
132 #define DSRL32 (HI(0) | LO(62))
133 #define DSRLV (HI(0) | LO(22))
134 #define DSUBU (HI(0) | LO(47))
135 #define J (HI(2))
136 #define JAL (HI(3))
137 #define JALR (HI(0) | LO(9))
138 #define JR (HI(0) | LO(8))
139 #define LD (HI(55))
140 #define LUI (HI(15))
141 #define LW (HI(35))
142 #define MFC1 (HI(17))
143 #define MFHI (HI(0) | LO(16))
144 #define MFLO (HI(0) | LO(18))
145 #define MOV_S (HI(17) | FMT_S | LO(6))
146 #define MTC1 (HI(17) | (4 << 21))
147 #define MUL_S (HI(17) | FMT_S | LO(2))
148 #define MULT (HI(0) | LO(24))
149 #define MULTU (HI(0) | LO(25))
150 #define NEG_S (HI(17) | FMT_S | LO(7))
151 #define NOP (HI(0) | LO(0))
152 #define NOR (HI(0) | LO(39))
153 #define OR (HI(0) | LO(37))
154 #define ORI (HI(13))
155 #define SD (HI(63))
156 #define SLT (HI(0) | LO(42))
157 #define SLTI (HI(10))
158 #define SLTIU (HI(11))
159 #define SLTU (HI(0) | LO(43))
160 #define SLL (HI(0) | LO(0))
161 #define SLLV (HI(0) | LO(4))
162 #define SRL (HI(0) | LO(2))
163 #define SRLV (HI(0) | LO(6))
164 #define SRA (HI(0) | LO(3))
165 #define SRAV (HI(0) | LO(7))
166 #define SUB_S (HI(17) | FMT_S | LO(1))
167 #define SUBU (HI(0) | LO(35))
168 #define SW (HI(43))
169 #define TRUNC_W_S (HI(17) | FMT_S | LO(13))
170 #define XOR (HI(0) | LO(38))
171 #define XORI (HI(14))
172
173 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
174 #define CLZ (HI(28) | LO(32))
175 #define DCLZ (HI(28) | LO(36))
176 #define MOVF (HI(0) | (0 << 16) | LO(1))
177 #define MOVN (HI(0) | LO(11))
178 #define MOVT (HI(0) | (1 << 16) | LO(1))
179 #define MOVZ (HI(0) | LO(10))
180 #define MUL (HI(28) | LO(2))
181 #define PREF (HI(51))
182 #define PREFX (HI(19) | LO(15))
183 #define SEB (HI(31) | (16 << 6) | LO(32))
184 #define SEH (HI(31) | (24 << 6) | LO(32))
185 #endif
186
187 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
188 #define ADDU_W ADDU
189 #define ADDIU_W ADDIU
190 #define SLL_W SLL
191 #define SUBU_W SUBU
192 #else
193 #define ADDU_W DADDU
194 #define ADDIU_W DADDIU
195 #define SLL_W DSLL
196 #define SUBU_W DSUBU
197 #endif
198
199 #define SIMM_MAX (0x7fff)
200 #define SIMM_MIN (-0x8000)
201 #define UIMM_MAX (0xffff)
202
203 /* dest_reg is the absolute name of the register
204 Useful for reordering instructions in the delay slot. */
push_inst(struct sljit_compiler * compiler,sljit_ins ins,sljit_s32 delay_slot)205 static sljit_s32 push_inst(struct sljit_compiler *compiler, sljit_ins ins, sljit_s32 delay_slot)
206 {
207 SLJIT_ASSERT(delay_slot == MOVABLE_INS || delay_slot >= UNMOVABLE_INS
208 || delay_slot == ((ins >> 11) & 0x1f) || delay_slot == ((ins >> 16) & 0x1f));
209 sljit_ins *ptr = (sljit_ins*)ensure_buf(compiler, sizeof(sljit_ins));
210 FAIL_IF(!ptr);
211 *ptr = ins;
212 compiler->size++;
213 compiler->delay_slot = delay_slot;
214 return SLJIT_SUCCESS;
215 }
216
invert_branch(sljit_s32 flags)217 static SLJIT_INLINE sljit_ins invert_branch(sljit_s32 flags)
218 {
219 return (flags & IS_BIT26_COND) ? (1 << 26) : (1 << 16);
220 }
221
detect_jump_type(struct sljit_jump * jump,sljit_ins * code_ptr,sljit_ins * code,sljit_sw executable_offset)222 static SLJIT_INLINE sljit_ins* detect_jump_type(struct sljit_jump *jump, sljit_ins *code_ptr, sljit_ins *code, sljit_sw executable_offset)
223 {
224 sljit_sw diff;
225 sljit_uw target_addr;
226 sljit_ins *inst;
227 sljit_ins saved_inst;
228
229 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
230 if (jump->flags & (SLJIT_REWRITABLE_JUMP | IS_CALL))
231 return code_ptr;
232 #else
233 if (jump->flags & SLJIT_REWRITABLE_JUMP)
234 return code_ptr;
235 #endif
236
237 if (jump->flags & JUMP_ADDR)
238 target_addr = jump->u.target;
239 else {
240 SLJIT_ASSERT(jump->flags & JUMP_LABEL);
241 target_addr = (sljit_uw)(code + jump->u.label->size) + (sljit_uw)executable_offset;
242 }
243
244 inst = (sljit_ins *)jump->addr;
245 if (jump->flags & IS_COND)
246 inst--;
247
248 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
249 if (jump->flags & IS_CALL)
250 goto keep_address;
251 #endif
252
253 /* B instructions. */
254 if (jump->flags & IS_MOVABLE) {
255 diff = ((sljit_sw)target_addr - (sljit_sw)inst - executable_offset) >> 2;
256 if (diff <= SIMM_MAX && diff >= SIMM_MIN) {
257 jump->flags |= PATCH_B;
258
259 if (!(jump->flags & IS_COND)) {
260 inst[0] = inst[-1];
261 inst[-1] = (jump->flags & IS_JAL) ? BAL : B;
262 jump->addr -= sizeof(sljit_ins);
263 return inst;
264 }
265 saved_inst = inst[0];
266 inst[0] = inst[-1];
267 inst[-1] = saved_inst ^ invert_branch(jump->flags);
268 jump->addr -= 2 * sizeof(sljit_ins);
269 return inst;
270 }
271 }
272 else {
273 diff = ((sljit_sw)target_addr - (sljit_sw)(inst + 1) - executable_offset) >> 2;
274 if (diff <= SIMM_MAX && diff >= SIMM_MIN) {
275 jump->flags |= PATCH_B;
276
277 if (!(jump->flags & IS_COND)) {
278 inst[0] = (jump->flags & IS_JAL) ? BAL : B;
279 inst[1] = NOP;
280 return inst + 1;
281 }
282 inst[0] = inst[0] ^ invert_branch(jump->flags);
283 inst[1] = NOP;
284 jump->addr -= sizeof(sljit_ins);
285 return inst + 1;
286 }
287 }
288
289 if (jump->flags & IS_COND) {
290 if ((jump->flags & IS_MOVABLE) && (target_addr & ~0xfffffff) == ((jump->addr + 2 * sizeof(sljit_ins)) & ~0xfffffff)) {
291 jump->flags |= PATCH_J;
292 saved_inst = inst[0];
293 inst[0] = inst[-1];
294 inst[-1] = (saved_inst & 0xffff0000) | 3;
295 inst[1] = J;
296 inst[2] = NOP;
297 return inst + 2;
298 }
299 else if ((target_addr & ~0xfffffff) == ((jump->addr + 3 * sizeof(sljit_ins)) & ~0xfffffff)) {
300 jump->flags |= PATCH_J;
301 inst[0] = (inst[0] & 0xffff0000) | 3;
302 inst[1] = NOP;
303 inst[2] = J;
304 inst[3] = NOP;
305 jump->addr += sizeof(sljit_ins);
306 return inst + 3;
307 }
308 }
309 else {
310 /* J instuctions. */
311 if ((jump->flags & IS_MOVABLE) && (target_addr & ~0xfffffff) == (jump->addr & ~0xfffffff)) {
312 jump->flags |= PATCH_J;
313 inst[0] = inst[-1];
314 inst[-1] = (jump->flags & IS_JAL) ? JAL : J;
315 jump->addr -= sizeof(sljit_ins);
316 return inst;
317 }
318
319 if ((target_addr & ~0xfffffff) == ((jump->addr + sizeof(sljit_ins)) & ~0xfffffff)) {
320 jump->flags |= PATCH_J;
321 inst[0] = (jump->flags & IS_JAL) ? JAL : J;
322 inst[1] = NOP;
323 return inst + 1;
324 }
325 }
326
327 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
328 keep_address:
329 if (target_addr <= 0x7fffffff) {
330 jump->flags |= PATCH_ABS32;
331 if (jump->flags & IS_COND) {
332 inst[0] -= 4;
333 inst++;
334 }
335 inst[2] = inst[6];
336 inst[3] = inst[7];
337 return inst + 3;
338 }
339 if (target_addr <= 0x7fffffffffffl) {
340 jump->flags |= PATCH_ABS48;
341 if (jump->flags & IS_COND) {
342 inst[0] -= 2;
343 inst++;
344 }
345 inst[4] = inst[6];
346 inst[5] = inst[7];
347 return inst + 5;
348 }
349 #endif
350
351 return code_ptr;
352 }
353
354 #ifdef __GNUC__
sljit_cache_flush(void * code,void * code_ptr)355 static __attribute__ ((noinline)) void sljit_cache_flush(void* code, void* code_ptr)
356 {
357 SLJIT_CACHE_FLUSH(code, code_ptr);
358 }
359 #endif
360
sljit_generate_code(struct sljit_compiler * compiler)361 SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler)
362 {
363 struct sljit_memory_fragment *buf;
364 sljit_ins *code;
365 sljit_ins *code_ptr;
366 sljit_ins *buf_ptr;
367 sljit_ins *buf_end;
368 sljit_uw word_count;
369 sljit_sw executable_offset;
370 sljit_uw addr;
371
372 struct sljit_label *label;
373 struct sljit_jump *jump;
374 struct sljit_const *const_;
375
376 CHECK_ERROR_PTR();
377 CHECK_PTR(check_sljit_generate_code(compiler));
378 reverse_buf(compiler);
379
380 code = (sljit_ins*)SLJIT_MALLOC_EXEC(compiler->size * sizeof(sljit_ins));
381 PTR_FAIL_WITH_EXEC_IF(code);
382 buf = compiler->buf;
383
384 code_ptr = code;
385 word_count = 0;
386 executable_offset = SLJIT_EXEC_OFFSET(code);
387
388 label = compiler->labels;
389 jump = compiler->jumps;
390 const_ = compiler->consts;
391
392 do {
393 buf_ptr = (sljit_ins*)buf->memory;
394 buf_end = buf_ptr + (buf->used_size >> 2);
395 do {
396 *code_ptr = *buf_ptr++;
397 SLJIT_ASSERT(!label || label->size >= word_count);
398 SLJIT_ASSERT(!jump || jump->addr >= word_count);
399 SLJIT_ASSERT(!const_ || const_->addr >= word_count);
400 /* These structures are ordered by their address. */
401 if (label && label->size == word_count) {
402 label->addr = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset);
403 label->size = code_ptr - code;
404 label = label->next;
405 }
406 if (jump && jump->addr == word_count) {
407 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
408 jump->addr = (sljit_uw)(code_ptr - 3);
409 #else
410 jump->addr = (sljit_uw)(code_ptr - 7);
411 #endif
412 code_ptr = detect_jump_type(jump, code_ptr, code, executable_offset);
413 jump = jump->next;
414 }
415 if (const_ && const_->addr == word_count) {
416 /* Just recording the address. */
417 const_->addr = (sljit_uw)code_ptr;
418 const_ = const_->next;
419 }
420 code_ptr ++;
421 word_count ++;
422 } while (buf_ptr < buf_end);
423
424 buf = buf->next;
425 } while (buf);
426
427 if (label && label->size == word_count) {
428 label->addr = (sljit_uw)code_ptr;
429 label->size = code_ptr - code;
430 label = label->next;
431 }
432
433 SLJIT_ASSERT(!label);
434 SLJIT_ASSERT(!jump);
435 SLJIT_ASSERT(!const_);
436 SLJIT_ASSERT(code_ptr - code <= (sljit_sw)compiler->size);
437
438 jump = compiler->jumps;
439 while (jump) {
440 do {
441 addr = (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target;
442 buf_ptr = (sljit_ins *)jump->addr;
443
444 if (jump->flags & PATCH_B) {
445 addr = (sljit_sw)(addr - ((sljit_uw)SLJIT_ADD_EXEC_OFFSET(buf_ptr, executable_offset) + sizeof(sljit_ins))) >> 2;
446 SLJIT_ASSERT((sljit_sw)addr <= SIMM_MAX && (sljit_sw)addr >= SIMM_MIN);
447 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | (addr & 0xffff);
448 break;
449 }
450 if (jump->flags & PATCH_J) {
451 SLJIT_ASSERT((addr & ~0xfffffff) == (((sljit_uw)SLJIT_ADD_EXEC_OFFSET(buf_ptr, executable_offset) + sizeof(sljit_ins)) & ~0xfffffff));
452 buf_ptr[0] |= (addr >> 2) & 0x03ffffff;
453 break;
454 }
455
456 /* Set the fields of immediate loads. */
457 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
458 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | ((addr >> 16) & 0xffff);
459 buf_ptr[1] = (buf_ptr[1] & 0xffff0000) | (addr & 0xffff);
460 #else
461 if (jump->flags & PATCH_ABS32) {
462 SLJIT_ASSERT(addr <= 0x7fffffff);
463 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | ((addr >> 16) & 0xffff);
464 buf_ptr[1] = (buf_ptr[1] & 0xffff0000) | (addr & 0xffff);
465 }
466 else if (jump->flags & PATCH_ABS48) {
467 SLJIT_ASSERT(addr <= 0x7fffffffffffl);
468 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | ((addr >> 32) & 0xffff);
469 buf_ptr[1] = (buf_ptr[1] & 0xffff0000) | ((addr >> 16) & 0xffff);
470 buf_ptr[3] = (buf_ptr[3] & 0xffff0000) | (addr & 0xffff);
471 }
472 else {
473 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | ((addr >> 48) & 0xffff);
474 buf_ptr[1] = (buf_ptr[1] & 0xffff0000) | ((addr >> 32) & 0xffff);
475 buf_ptr[3] = (buf_ptr[3] & 0xffff0000) | ((addr >> 16) & 0xffff);
476 buf_ptr[5] = (buf_ptr[5] & 0xffff0000) | (addr & 0xffff);
477 }
478 #endif
479 } while (0);
480 jump = jump->next;
481 }
482
483 compiler->error = SLJIT_ERR_COMPILED;
484 compiler->executable_offset = executable_offset;
485 compiler->executable_size = (code_ptr - code) * sizeof(sljit_ins);
486
487 code = (sljit_ins *)SLJIT_ADD_EXEC_OFFSET(code, executable_offset);
488 code_ptr = (sljit_ins *)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset);
489
490 #ifndef __GNUC__
491 SLJIT_CACHE_FLUSH(code, code_ptr);
492 #else
493 /* GCC workaround for invalid code generation with -O2. */
494 sljit_cache_flush(code, code_ptr);
495 #endif
496 return code;
497 }
498
sljit_has_cpu_feature(sljit_s32 feature_type)499 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_has_cpu_feature(sljit_s32 feature_type)
500 {
501 switch (feature_type) {
502 case SLJIT_HAS_FPU:
503 #ifdef SLJIT_IS_FPU_AVAILABLE
504 return SLJIT_IS_FPU_AVAILABLE;
505 #elif defined(__GNUC__)
506 sljit_sw fir;
507 asm ("cfc1 %0, $0" : "=r"(fir));
508 return (fir >> 22) & 0x1;
509 #else
510 #error "FIR check is not implemented for this architecture"
511 #endif
512
513 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
514 case SLJIT_HAS_CLZ:
515 case SLJIT_HAS_CMOV:
516 return 1;
517 #endif
518
519 default:
520 return 0;
521 }
522 }
523
524 /* --------------------------------------------------------------------- */
525 /* Entry, exit */
526 /* --------------------------------------------------------------------- */
527
528 /* Creates an index in data_transfer_insts array. */
529 #define LOAD_DATA 0x01
530 #define WORD_DATA 0x00
531 #define BYTE_DATA 0x02
532 #define HALF_DATA 0x04
533 #define INT_DATA 0x06
534 #define SIGNED_DATA 0x08
535 /* Separates integer and floating point registers */
536 #define GPR_REG 0x0f
537 #define DOUBLE_DATA 0x10
538 #define SINGLE_DATA 0x12
539
540 #define MEM_MASK 0x1f
541
542 #define WRITE_BACK 0x00020
543 #define ARG_TEST 0x00040
544 #define ALT_KEEP_CACHE 0x00080
545 #define CUMULATIVE_OP 0x00100
546 #define LOGICAL_OP 0x00200
547 #define IMM_OP 0x00400
548 #define SRC2_IMM 0x00800
549
550 #define UNUSED_DEST 0x01000
551 #define REG_DEST 0x02000
552 #define REG1_SOURCE 0x04000
553 #define REG2_SOURCE 0x08000
554 #define SLOW_SRC1 0x10000
555 #define SLOW_SRC2 0x20000
556 #define SLOW_DEST 0x40000
557
558 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
559 #define STACK_STORE SW
560 #define STACK_LOAD LW
561 #else
562 #define STACK_STORE SD
563 #define STACK_LOAD LD
564 #endif
565
566 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
567 #include "sljitNativeMIPS_32.c"
568 #else
569 #include "sljitNativeMIPS_64.c"
570 #endif
571
sljit_emit_enter(struct sljit_compiler * compiler,sljit_s32 options,sljit_s32 args,sljit_s32 scratches,sljit_s32 saveds,sljit_s32 fscratches,sljit_s32 fsaveds,sljit_s32 local_size)572 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compiler,
573 sljit_s32 options, sljit_s32 args, sljit_s32 scratches, sljit_s32 saveds,
574 sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size)
575 {
576 sljit_ins base;
577 sljit_s32 i, tmp, offs;
578
579 CHECK_ERROR();
580 CHECK(check_sljit_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size));
581 set_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size);
582
583 local_size += GET_SAVED_REGISTERS_SIZE(scratches, saveds, 1) + SLJIT_LOCALS_OFFSET;
584 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
585 local_size = (local_size + 15) & ~0xf;
586 #else
587 local_size = (local_size + 31) & ~0x1f;
588 #endif
589 compiler->local_size = local_size;
590
591 if (local_size <= SIMM_MAX) {
592 /* Frequent case. */
593 FAIL_IF(push_inst(compiler, ADDIU_W | S(SLJIT_SP) | T(SLJIT_SP) | IMM(-local_size), DR(SLJIT_SP)));
594 base = S(SLJIT_SP);
595 }
596 else {
597 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), local_size));
598 FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_SP) | TA(0) | D(TMP_REG2), DR(TMP_REG2)));
599 FAIL_IF(push_inst(compiler, SUBU_W | S(SLJIT_SP) | T(TMP_REG1) | D(SLJIT_SP), DR(SLJIT_SP)));
600 base = S(TMP_REG2);
601 local_size = 0;
602 }
603
604 offs = local_size - (sljit_sw)(sizeof(sljit_sw));
605 FAIL_IF(push_inst(compiler, STACK_STORE | base | TA(RETURN_ADDR_REG) | IMM(offs), MOVABLE_INS));
606
607 tmp = saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - saveds) : SLJIT_FIRST_SAVED_REG;
608 for (i = SLJIT_S0; i >= tmp; i--) {
609 offs -= (sljit_s32)(sizeof(sljit_sw));
610 FAIL_IF(push_inst(compiler, STACK_STORE | base | T(i) | IMM(offs), MOVABLE_INS));
611 }
612
613 for (i = scratches; i >= SLJIT_FIRST_SAVED_REG; i--) {
614 offs -= (sljit_s32)(sizeof(sljit_sw));
615 FAIL_IF(push_inst(compiler, STACK_STORE | base | T(i) | IMM(offs), MOVABLE_INS));
616 }
617
618 if (args >= 1)
619 FAIL_IF(push_inst(compiler, ADDU_W | SA(4) | TA(0) | D(SLJIT_S0), DR(SLJIT_S0)));
620 if (args >= 2)
621 FAIL_IF(push_inst(compiler, ADDU_W | SA(5) | TA(0) | D(SLJIT_S1), DR(SLJIT_S1)));
622 if (args >= 3)
623 FAIL_IF(push_inst(compiler, ADDU_W | SA(6) | TA(0) | D(SLJIT_S2), DR(SLJIT_S2)));
624
625 return SLJIT_SUCCESS;
626 }
627
sljit_set_context(struct sljit_compiler * compiler,sljit_s32 options,sljit_s32 args,sljit_s32 scratches,sljit_s32 saveds,sljit_s32 fscratches,sljit_s32 fsaveds,sljit_s32 local_size)628 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_set_context(struct sljit_compiler *compiler,
629 sljit_s32 options, sljit_s32 args, sljit_s32 scratches, sljit_s32 saveds,
630 sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size)
631 {
632 CHECK_ERROR();
633 CHECK(check_sljit_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size));
634 set_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size);
635
636 local_size += GET_SAVED_REGISTERS_SIZE(scratches, saveds, 1) + SLJIT_LOCALS_OFFSET;
637 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
638 compiler->local_size = (local_size + 15) & ~0xf;
639 #else
640 compiler->local_size = (local_size + 31) & ~0x1f;
641 #endif
642 return SLJIT_SUCCESS;
643 }
644
sljit_emit_return(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 src,sljit_sw srcw)645 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 src, sljit_sw srcw)
646 {
647 sljit_s32 local_size, i, tmp, offs;
648 sljit_ins base;
649
650 CHECK_ERROR();
651 CHECK(check_sljit_emit_return(compiler, op, src, srcw));
652
653 FAIL_IF(emit_mov_before_return(compiler, op, src, srcw));
654
655 local_size = compiler->local_size;
656 if (local_size <= SIMM_MAX)
657 base = S(SLJIT_SP);
658 else {
659 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), local_size));
660 FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_SP) | T(TMP_REG1) | D(TMP_REG1), DR(TMP_REG1)));
661 base = S(TMP_REG1);
662 local_size = 0;
663 }
664
665 FAIL_IF(push_inst(compiler, STACK_LOAD | base | TA(RETURN_ADDR_REG) | IMM(local_size - (sljit_s32)sizeof(sljit_sw)), RETURN_ADDR_REG));
666 offs = local_size - (sljit_s32)GET_SAVED_REGISTERS_SIZE(compiler->scratches, compiler->saveds, 1);
667
668 tmp = compiler->scratches;
669 for (i = SLJIT_FIRST_SAVED_REG; i <= tmp; i++) {
670 FAIL_IF(push_inst(compiler, STACK_LOAD | base | T(i) | IMM(offs), DR(i)));
671 offs += (sljit_s32)(sizeof(sljit_sw));
672 }
673
674 tmp = compiler->saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - compiler->saveds) : SLJIT_FIRST_SAVED_REG;
675 for (i = tmp; i <= SLJIT_S0; i++) {
676 FAIL_IF(push_inst(compiler, STACK_LOAD | base | T(i) | IMM(offs), DR(i)));
677 offs += (sljit_s32)(sizeof(sljit_sw));
678 }
679
680 SLJIT_ASSERT(offs == local_size - (sljit_sw)(sizeof(sljit_sw)));
681
682 FAIL_IF(push_inst(compiler, JR | SA(RETURN_ADDR_REG), UNMOVABLE_INS));
683 if (compiler->local_size <= SIMM_MAX)
684 return push_inst(compiler, ADDIU_W | S(SLJIT_SP) | T(SLJIT_SP) | IMM(compiler->local_size), UNMOVABLE_INS);
685 else
686 return push_inst(compiler, ADDU_W | S(TMP_REG1) | TA(0) | D(SLJIT_SP), UNMOVABLE_INS);
687 }
688
689 #undef STACK_STORE
690 #undef STACK_LOAD
691
692 /* --------------------------------------------------------------------- */
693 /* Operators */
694 /* --------------------------------------------------------------------- */
695
696 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
697 #define ARCH_32_64(a, b) a
698 #else
699 #define ARCH_32_64(a, b) b
700 #endif
701
702 static const sljit_ins data_transfer_insts[16 + 4] = {
703 /* u w s */ ARCH_32_64(HI(43) /* sw */, HI(63) /* sd */),
704 /* u w l */ ARCH_32_64(HI(35) /* lw */, HI(55) /* ld */),
705 /* u b s */ HI(40) /* sb */,
706 /* u b l */ HI(36) /* lbu */,
707 /* u h s */ HI(41) /* sh */,
708 /* u h l */ HI(37) /* lhu */,
709 /* u i s */ HI(43) /* sw */,
710 /* u i l */ ARCH_32_64(HI(35) /* lw */, HI(39) /* lwu */),
711
712 /* s w s */ ARCH_32_64(HI(43) /* sw */, HI(63) /* sd */),
713 /* s w l */ ARCH_32_64(HI(35) /* lw */, HI(55) /* ld */),
714 /* s b s */ HI(40) /* sb */,
715 /* s b l */ HI(32) /* lb */,
716 /* s h s */ HI(41) /* sh */,
717 /* s h l */ HI(33) /* lh */,
718 /* s i s */ HI(43) /* sw */,
719 /* s i l */ HI(35) /* lw */,
720
721 /* d s */ HI(61) /* sdc1 */,
722 /* d l */ HI(53) /* ldc1 */,
723 /* s s */ HI(57) /* swc1 */,
724 /* s l */ HI(49) /* lwc1 */,
725 };
726
727 #undef ARCH_32_64
728
729 /* reg_ar is an absoulute register! */
730
731 /* Can perform an operation using at most 1 instruction. */
getput_arg_fast(struct sljit_compiler * compiler,sljit_s32 flags,sljit_s32 reg_ar,sljit_s32 arg,sljit_sw argw)732 static sljit_s32 getput_arg_fast(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg_ar, sljit_s32 arg, sljit_sw argw)
733 {
734 SLJIT_ASSERT(arg & SLJIT_MEM);
735
736 if ((!(flags & WRITE_BACK) || !(arg & REG_MASK)) && !(arg & OFFS_REG_MASK) && argw <= SIMM_MAX && argw >= SIMM_MIN) {
737 /* Works for both absoulte and relative addresses. */
738 if (SLJIT_UNLIKELY(flags & ARG_TEST))
739 return 1;
740 FAIL_IF(push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(arg & REG_MASK)
741 | TA(reg_ar) | IMM(argw), ((flags & MEM_MASK) <= GPR_REG && (flags & LOAD_DATA)) ? reg_ar : MOVABLE_INS));
742 return -1;
743 }
744 return 0;
745 }
746
747 /* See getput_arg below.
748 Note: can_cache is called only for binary operators. Those
749 operators always uses word arguments without write back. */
can_cache(sljit_s32 arg,sljit_sw argw,sljit_s32 next_arg,sljit_sw next_argw)750 static sljit_s32 can_cache(sljit_s32 arg, sljit_sw argw, sljit_s32 next_arg, sljit_sw next_argw)
751 {
752 SLJIT_ASSERT((arg & SLJIT_MEM) && (next_arg & SLJIT_MEM));
753
754 /* Simple operation except for updates. */
755 if (arg & OFFS_REG_MASK) {
756 argw &= 0x3;
757 next_argw &= 0x3;
758 if (argw && argw == next_argw && (arg == next_arg || (arg & OFFS_REG_MASK) == (next_arg & OFFS_REG_MASK)))
759 return 1;
760 return 0;
761 }
762
763 if (arg == next_arg) {
764 if (((next_argw - argw) <= SIMM_MAX && (next_argw - argw) >= SIMM_MIN))
765 return 1;
766 return 0;
767 }
768
769 return 0;
770 }
771
772 /* Emit the necessary instructions. See can_cache above. */
getput_arg(struct sljit_compiler * compiler,sljit_s32 flags,sljit_s32 reg_ar,sljit_s32 arg,sljit_sw argw,sljit_s32 next_arg,sljit_sw next_argw)773 static sljit_s32 getput_arg(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg_ar, sljit_s32 arg, sljit_sw argw, sljit_s32 next_arg, sljit_sw next_argw)
774 {
775 sljit_s32 tmp_ar, base, delay_slot;
776
777 SLJIT_ASSERT(arg & SLJIT_MEM);
778 if (!(next_arg & SLJIT_MEM)) {
779 next_arg = 0;
780 next_argw = 0;
781 }
782
783 if ((flags & MEM_MASK) <= GPR_REG && (flags & LOAD_DATA)) {
784 tmp_ar = reg_ar;
785 delay_slot = reg_ar;
786 } else {
787 tmp_ar = DR(TMP_REG1);
788 delay_slot = MOVABLE_INS;
789 }
790 base = arg & REG_MASK;
791
792 if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) {
793 if (SLJIT_UNLIKELY(flags & WRITE_BACK)) {
794 SLJIT_ASSERT(argw == 0);
795 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(OFFS_REG(arg)) | D(base), DR(base)));
796 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar), delay_slot);
797 }
798
799 argw &= 0x3;
800
801 /* Using the cache. */
802 if (argw == compiler->cache_argw) {
803 if (arg == compiler->cache_arg)
804 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
805
806 if ((SLJIT_MEM | (arg & OFFS_REG_MASK)) == compiler->cache_arg) {
807 if (arg == next_arg && argw == (next_argw & 0x3)) {
808 compiler->cache_arg = arg;
809 compiler->cache_argw = argw;
810 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(TMP_REG3), DR(TMP_REG3)));
811 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
812 }
813 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | DA(tmp_ar), tmp_ar));
814 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | SA(tmp_ar) | TA(reg_ar), delay_slot);
815 }
816 }
817
818 if (SLJIT_UNLIKELY(argw)) {
819 compiler->cache_arg = SLJIT_MEM | (arg & OFFS_REG_MASK);
820 compiler->cache_argw = argw;
821 FAIL_IF(push_inst(compiler, SLL_W | T(OFFS_REG(arg)) | D(TMP_REG3) | SH_IMM(argw), DR(TMP_REG3)));
822 }
823
824 if (arg == next_arg && argw == (next_argw & 0x3)) {
825 compiler->cache_arg = arg;
826 compiler->cache_argw = argw;
827 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(!argw ? OFFS_REG(arg) : TMP_REG3) | D(TMP_REG3), DR(TMP_REG3)));
828 tmp_ar = DR(TMP_REG3);
829 }
830 else
831 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(!argw ? OFFS_REG(arg) : TMP_REG3) | DA(tmp_ar), tmp_ar));
832 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | SA(tmp_ar) | TA(reg_ar), delay_slot);
833 }
834
835 if (SLJIT_UNLIKELY(flags & WRITE_BACK) && base) {
836 if (argw <= SIMM_MAX && argw >= SIMM_MIN) {
837 if (argw)
838 FAIL_IF(push_inst(compiler, ADDIU_W | S(base) | T(base) | IMM(argw), DR(base)));
839 }
840 else {
841 if (compiler->cache_arg == SLJIT_MEM && argw - compiler->cache_argw <= SIMM_MAX && argw - compiler->cache_argw >= SIMM_MIN) {
842 if (argw != compiler->cache_argw) {
843 FAIL_IF(push_inst(compiler, ADDIU_W | S(TMP_REG3) | T(TMP_REG3) | IMM(argw - compiler->cache_argw), DR(TMP_REG3)));
844 compiler->cache_argw = argw;
845 }
846 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(base), DR(base)));
847 }
848 else {
849 compiler->cache_arg = SLJIT_MEM;
850 compiler->cache_argw = argw;
851 FAIL_IF(load_immediate(compiler, DR(TMP_REG3), argw));
852 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(base), DR(base)));
853 }
854 }
855 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar), delay_slot);
856 }
857
858 if (compiler->cache_arg == arg && argw - compiler->cache_argw <= SIMM_MAX && argw - compiler->cache_argw >= SIMM_MIN) {
859 if (argw != compiler->cache_argw) {
860 FAIL_IF(push_inst(compiler, ADDIU_W | S(TMP_REG3) | T(TMP_REG3) | IMM(argw - compiler->cache_argw), DR(TMP_REG3)));
861 compiler->cache_argw = argw;
862 }
863 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
864 }
865
866 if (compiler->cache_arg == SLJIT_MEM && argw - compiler->cache_argw <= SIMM_MAX && argw - compiler->cache_argw >= SIMM_MIN) {
867 if (argw != compiler->cache_argw)
868 FAIL_IF(push_inst(compiler, ADDIU_W | S(TMP_REG3) | T(TMP_REG3) | IMM(argw - compiler->cache_argw), DR(TMP_REG3)));
869 }
870 else {
871 compiler->cache_arg = SLJIT_MEM;
872 FAIL_IF(load_immediate(compiler, DR(TMP_REG3), argw));
873 }
874 compiler->cache_argw = argw;
875
876 if (!base)
877 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
878
879 if (arg == next_arg && next_argw - argw <= SIMM_MAX && next_argw - argw >= SIMM_MIN) {
880 compiler->cache_arg = arg;
881 FAIL_IF(push_inst(compiler, ADDU_W | S(TMP_REG3) | T(base) | D(TMP_REG3), DR(TMP_REG3)));
882 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
883 }
884
885 FAIL_IF(push_inst(compiler, ADDU_W | S(TMP_REG3) | T(base) | DA(tmp_ar), tmp_ar));
886 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | SA(tmp_ar) | TA(reg_ar), delay_slot);
887 }
888
emit_op_mem(struct sljit_compiler * compiler,sljit_s32 flags,sljit_s32 reg_ar,sljit_s32 arg,sljit_sw argw)889 static SLJIT_INLINE sljit_s32 emit_op_mem(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg_ar, sljit_s32 arg, sljit_sw argw)
890 {
891 if (getput_arg_fast(compiler, flags, reg_ar, arg, argw))
892 return compiler->error;
893 compiler->cache_arg = 0;
894 compiler->cache_argw = 0;
895 return getput_arg(compiler, flags, reg_ar, arg, argw, 0, 0);
896 }
897
emit_op_mem2(struct sljit_compiler * compiler,sljit_s32 flags,sljit_s32 reg,sljit_s32 arg1,sljit_sw arg1w,sljit_s32 arg2,sljit_sw arg2w)898 static SLJIT_INLINE sljit_s32 emit_op_mem2(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, sljit_s32 arg1, sljit_sw arg1w, sljit_s32 arg2, sljit_sw arg2w)
899 {
900 if (getput_arg_fast(compiler, flags, reg, arg1, arg1w))
901 return compiler->error;
902 return getput_arg(compiler, flags, reg, arg1, arg1w, arg2, arg2w);
903 }
904
emit_op(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 flags,sljit_s32 dst,sljit_sw dstw,sljit_s32 src1,sljit_sw src1w,sljit_s32 src2,sljit_sw src2w)905 static sljit_s32 emit_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 flags,
906 sljit_s32 dst, sljit_sw dstw,
907 sljit_s32 src1, sljit_sw src1w,
908 sljit_s32 src2, sljit_sw src2w)
909 {
910 /* arg1 goes to TMP_REG1 or src reg
911 arg2 goes to TMP_REG2, imm or src reg
912 TMP_REG3 can be used for caching
913 result goes to TMP_REG2, so put result can use TMP_REG1 and TMP_REG3. */
914 sljit_s32 dst_r = TMP_REG2;
915 sljit_s32 src1_r;
916 sljit_sw src2_r = 0;
917 sljit_s32 sugg_src2_r = TMP_REG2;
918
919 if (!(flags & ALT_KEEP_CACHE)) {
920 compiler->cache_arg = 0;
921 compiler->cache_argw = 0;
922 }
923
924 if (SLJIT_UNLIKELY(dst == SLJIT_UNUSED)) {
925 SLJIT_ASSERT(HAS_FLAGS(op));
926 flags |= UNUSED_DEST;
927 }
928 else if (FAST_IS_REG(dst)) {
929 dst_r = dst;
930 flags |= REG_DEST;
931 if (op >= SLJIT_MOV && op <= SLJIT_MOVU_S32)
932 sugg_src2_r = dst_r;
933 }
934 else if ((dst & SLJIT_MEM) && !getput_arg_fast(compiler, flags | ARG_TEST, DR(TMP_REG1), dst, dstw))
935 flags |= SLOW_DEST;
936
937 if (flags & IMM_OP) {
938 if ((src2 & SLJIT_IMM) && src2w) {
939 if ((!(flags & LOGICAL_OP) && (src2w <= SIMM_MAX && src2w >= SIMM_MIN))
940 || ((flags & LOGICAL_OP) && !(src2w & ~UIMM_MAX))) {
941 flags |= SRC2_IMM;
942 src2_r = src2w;
943 }
944 }
945 if (!(flags & SRC2_IMM) && (flags & CUMULATIVE_OP) && (src1 & SLJIT_IMM) && src1w) {
946 if ((!(flags & LOGICAL_OP) && (src1w <= SIMM_MAX && src1w >= SIMM_MIN))
947 || ((flags & LOGICAL_OP) && !(src1w & ~UIMM_MAX))) {
948 flags |= SRC2_IMM;
949 src2_r = src1w;
950
951 /* And swap arguments. */
952 src1 = src2;
953 src1w = src2w;
954 src2 = SLJIT_IMM;
955 /* src2w = src2_r unneeded. */
956 }
957 }
958 }
959
960 /* Source 1. */
961 if (FAST_IS_REG(src1)) {
962 src1_r = src1;
963 flags |= REG1_SOURCE;
964 }
965 else if (src1 & SLJIT_IMM) {
966 if (src1w) {
967 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), src1w));
968 src1_r = TMP_REG1;
969 }
970 else
971 src1_r = 0;
972 }
973 else {
974 if (getput_arg_fast(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w))
975 FAIL_IF(compiler->error);
976 else
977 flags |= SLOW_SRC1;
978 src1_r = TMP_REG1;
979 }
980
981 /* Source 2. */
982 if (FAST_IS_REG(src2)) {
983 src2_r = src2;
984 flags |= REG2_SOURCE;
985 if (!(flags & REG_DEST) && op >= SLJIT_MOV && op <= SLJIT_MOVU_S32)
986 dst_r = src2_r;
987 }
988 else if (src2 & SLJIT_IMM) {
989 if (!(flags & SRC2_IMM)) {
990 if (src2w) {
991 FAIL_IF(load_immediate(compiler, DR(sugg_src2_r), src2w));
992 src2_r = sugg_src2_r;
993 }
994 else {
995 src2_r = 0;
996 if ((op >= SLJIT_MOV && op <= SLJIT_MOVU_S32) && (dst & SLJIT_MEM))
997 dst_r = 0;
998 }
999 }
1000 }
1001 else {
1002 if (getput_arg_fast(compiler, flags | LOAD_DATA, DR(sugg_src2_r), src2, src2w))
1003 FAIL_IF(compiler->error);
1004 else
1005 flags |= SLOW_SRC2;
1006 src2_r = sugg_src2_r;
1007 }
1008
1009 if ((flags & (SLOW_SRC1 | SLOW_SRC2)) == (SLOW_SRC1 | SLOW_SRC2)) {
1010 SLJIT_ASSERT(src2_r == TMP_REG2);
1011 if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
1012 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG2), src2, src2w, src1, src1w));
1013 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w, dst, dstw));
1014 }
1015 else {
1016 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w, src2, src2w));
1017 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG2), src2, src2w, dst, dstw));
1018 }
1019 }
1020 else if (flags & SLOW_SRC1)
1021 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w, dst, dstw));
1022 else if (flags & SLOW_SRC2)
1023 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(sugg_src2_r), src2, src2w, dst, dstw));
1024
1025 FAIL_IF(emit_single_op(compiler, op, flags, dst_r, src1_r, src2_r));
1026
1027 if (dst & SLJIT_MEM) {
1028 if (!(flags & SLOW_DEST)) {
1029 getput_arg_fast(compiler, flags, DR(dst_r), dst, dstw);
1030 return compiler->error;
1031 }
1032 return getput_arg(compiler, flags, DR(dst_r), dst, dstw, 0, 0);
1033 }
1034
1035 return SLJIT_SUCCESS;
1036 }
1037
sljit_emit_op0(struct sljit_compiler * compiler,sljit_s32 op)1038 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op0(struct sljit_compiler *compiler, sljit_s32 op)
1039 {
1040 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1041 sljit_s32 int_op = op & SLJIT_I32_OP;
1042 #endif
1043
1044 CHECK_ERROR();
1045 CHECK(check_sljit_emit_op0(compiler, op));
1046
1047 op = GET_OPCODE(op);
1048 switch (op) {
1049 case SLJIT_BREAKPOINT:
1050 return push_inst(compiler, BREAK, UNMOVABLE_INS);
1051 case SLJIT_NOP:
1052 return push_inst(compiler, NOP, UNMOVABLE_INS);
1053 case SLJIT_LMUL_UW:
1054 case SLJIT_LMUL_SW:
1055 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1056 FAIL_IF(push_inst(compiler, (op == SLJIT_LMUL_UW ? DMULTU : DMULT) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1057 #else
1058 FAIL_IF(push_inst(compiler, (op == SLJIT_LMUL_UW ? MULTU : MULT) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1059 #endif
1060 FAIL_IF(push_inst(compiler, MFLO | D(SLJIT_R0), DR(SLJIT_R0)));
1061 return push_inst(compiler, MFHI | D(SLJIT_R1), DR(SLJIT_R1));
1062 case SLJIT_DIVMOD_UW:
1063 case SLJIT_DIVMOD_SW:
1064 case SLJIT_DIV_UW:
1065 case SLJIT_DIV_SW:
1066 SLJIT_COMPILE_ASSERT((SLJIT_DIVMOD_UW & 0x2) == 0 && SLJIT_DIV_UW - 0x2 == SLJIT_DIVMOD_UW, bad_div_opcode_assignments);
1067 #if !(defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
1068 FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1069 FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1070 #endif
1071
1072 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1073 if (int_op)
1074 FAIL_IF(push_inst(compiler, ((op | 0x2) == SLJIT_DIV_UW ? DIVU : DIV) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1075 else
1076 FAIL_IF(push_inst(compiler, ((op | 0x2) == SLJIT_DIV_UW ? DDIVU : DDIV) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1077 #else
1078 FAIL_IF(push_inst(compiler, ((op | 0x2) == SLJIT_DIV_UW ? DIVU : DIV) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1079 #endif
1080
1081 FAIL_IF(push_inst(compiler, MFLO | D(SLJIT_R0), DR(SLJIT_R0)));
1082 return (op >= SLJIT_DIV_UW) ? SLJIT_SUCCESS : push_inst(compiler, MFHI | D(SLJIT_R1), DR(SLJIT_R1));
1083 }
1084
1085 return SLJIT_SUCCESS;
1086 }
1087
1088 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
emit_prefetch(struct sljit_compiler * compiler,sljit_s32 src,sljit_sw srcw)1089 static sljit_s32 emit_prefetch(struct sljit_compiler *compiler,
1090 sljit_s32 src, sljit_sw srcw)
1091 {
1092 if (!(src & OFFS_REG_MASK)) {
1093 if (srcw <= SIMM_MAX && srcw >= SIMM_MIN)
1094 return push_inst(compiler, PREF | S(src & REG_MASK) | IMM(srcw), MOVABLE_INS);
1095
1096 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), srcw));
1097 return push_inst(compiler, PREFX | S(src & REG_MASK) | T(TMP_REG1), MOVABLE_INS);
1098 }
1099
1100 srcw &= 0x3;
1101
1102 if (SLJIT_UNLIKELY(srcw != 0)) {
1103 FAIL_IF(push_inst(compiler, SLL_W | T(OFFS_REG(src)) | D(TMP_REG1) | SH_IMM(srcw), DR(TMP_REG1)));
1104 return push_inst(compiler, PREFX | S(src & REG_MASK) | T(TMP_REG1), MOVABLE_INS);
1105 }
1106
1107 return push_inst(compiler, PREFX | S(src & REG_MASK) | T(OFFS_REG(src)), MOVABLE_INS);
1108 }
1109 #endif
1110
sljit_emit_op1(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 dst,sljit_sw dstw,sljit_s32 src,sljit_sw srcw)1111 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op1(struct sljit_compiler *compiler, sljit_s32 op,
1112 sljit_s32 dst, sljit_sw dstw,
1113 sljit_s32 src, sljit_sw srcw)
1114 {
1115 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1116 # define flags 0
1117 #else
1118 sljit_s32 flags = 0;
1119 #endif
1120
1121 CHECK_ERROR();
1122 CHECK(check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw));
1123 ADJUST_LOCAL_OFFSET(dst, dstw);
1124 ADJUST_LOCAL_OFFSET(src, srcw);
1125
1126 if (dst == SLJIT_UNUSED && !HAS_FLAGS(op)) {
1127 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
1128 if (op <= SLJIT_MOV_P && (src & SLJIT_MEM))
1129 return emit_prefetch(compiler, src, srcw);
1130 #endif
1131 return SLJIT_SUCCESS;
1132 }
1133
1134 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1135 if ((op & SLJIT_I32_OP) && GET_OPCODE(op) >= SLJIT_NOT) {
1136 flags |= INT_DATA | SIGNED_DATA;
1137 if (src & SLJIT_IMM)
1138 srcw = (sljit_s32)srcw;
1139 }
1140 #endif
1141
1142 switch (GET_OPCODE(op)) {
1143 case SLJIT_MOV:
1144 case SLJIT_MOV_P:
1145 return emit_op(compiler, SLJIT_MOV, WORD_DATA, dst, dstw, TMP_REG1, 0, src, srcw);
1146
1147 case SLJIT_MOV_U32:
1148 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1149 return emit_op(compiler, SLJIT_MOV_U32, INT_DATA, dst, dstw, TMP_REG1, 0, src, srcw);
1150 #else
1151 return emit_op(compiler, SLJIT_MOV_U32, INT_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u32)srcw : srcw);
1152 #endif
1153
1154 case SLJIT_MOV_S32:
1155 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1156 return emit_op(compiler, SLJIT_MOV_S32, INT_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, srcw);
1157 #else
1158 return emit_op(compiler, SLJIT_MOV_S32, INT_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_s32)srcw : srcw);
1159 #endif
1160
1161 case SLJIT_MOV_U8:
1162 return emit_op(compiler, SLJIT_MOV_U8, BYTE_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u8)srcw : srcw);
1163
1164 case SLJIT_MOV_S8:
1165 return emit_op(compiler, SLJIT_MOV_S8, BYTE_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_s8)srcw : srcw);
1166
1167 case SLJIT_MOV_U16:
1168 return emit_op(compiler, SLJIT_MOV_U16, HALF_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u16)srcw : srcw);
1169
1170 case SLJIT_MOV_S16:
1171 return emit_op(compiler, SLJIT_MOV_S16, HALF_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_s16)srcw : srcw);
1172
1173 case SLJIT_MOVU:
1174 case SLJIT_MOVU_P:
1175 return emit_op(compiler, SLJIT_MOV, WORD_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1176
1177 case SLJIT_MOVU_U32:
1178 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1179 return emit_op(compiler, SLJIT_MOV_U32, INT_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1180 #else
1181 return emit_op(compiler, SLJIT_MOV_U32, INT_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u32)srcw : srcw);
1182 #endif
1183
1184 case SLJIT_MOVU_S32:
1185 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1186 return emit_op(compiler, SLJIT_MOV_S32, INT_DATA | SIGNED_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1187 #else
1188 return emit_op(compiler, SLJIT_MOV_S32, INT_DATA | SIGNED_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_s32)srcw : srcw);
1189 #endif
1190
1191 case SLJIT_MOVU_U8:
1192 return emit_op(compiler, SLJIT_MOV_U8, BYTE_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u8)srcw : srcw);
1193
1194 case SLJIT_MOVU_S8:
1195 return emit_op(compiler, SLJIT_MOV_S8, BYTE_DATA | SIGNED_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_s8)srcw : srcw);
1196
1197 case SLJIT_MOVU_U16:
1198 return emit_op(compiler, SLJIT_MOV_U16, HALF_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u16)srcw : srcw);
1199
1200 case SLJIT_MOVU_S16:
1201 return emit_op(compiler, SLJIT_MOV_S16, HALF_DATA | SIGNED_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_s16)srcw : srcw);
1202
1203 case SLJIT_NOT:
1204 return emit_op(compiler, op, flags, dst, dstw, TMP_REG1, 0, src, srcw);
1205
1206 case SLJIT_NEG:
1207 return emit_op(compiler, SLJIT_SUB | GET_ALL_FLAGS(op), flags | IMM_OP, dst, dstw, SLJIT_IMM, 0, src, srcw);
1208
1209 case SLJIT_CLZ:
1210 return emit_op(compiler, op, flags, dst, dstw, TMP_REG1, 0, src, srcw);
1211 }
1212
1213 return SLJIT_SUCCESS;
1214
1215 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1216 # undef flags
1217 #endif
1218 }
1219
sljit_emit_op2(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 dst,sljit_sw dstw,sljit_s32 src1,sljit_sw src1w,sljit_s32 src2,sljit_sw src2w)1220 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op2(struct sljit_compiler *compiler, sljit_s32 op,
1221 sljit_s32 dst, sljit_sw dstw,
1222 sljit_s32 src1, sljit_sw src1w,
1223 sljit_s32 src2, sljit_sw src2w)
1224 {
1225 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1226 # define flags 0
1227 #else
1228 sljit_s32 flags = 0;
1229 #endif
1230
1231 CHECK_ERROR();
1232 CHECK(check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w));
1233 ADJUST_LOCAL_OFFSET(dst, dstw);
1234 ADJUST_LOCAL_OFFSET(src1, src1w);
1235 ADJUST_LOCAL_OFFSET(src2, src2w);
1236
1237 if (dst == SLJIT_UNUSED && !HAS_FLAGS(op))
1238 return SLJIT_SUCCESS;
1239
1240 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1241 if (op & SLJIT_I32_OP) {
1242 flags |= INT_DATA | SIGNED_DATA;
1243 if (src1 & SLJIT_IMM)
1244 src1w = (sljit_s32)src1w;
1245 if (src2 & SLJIT_IMM)
1246 src2w = (sljit_s32)src2w;
1247 }
1248 #endif
1249
1250 switch (GET_OPCODE(op)) {
1251 case SLJIT_ADD:
1252 case SLJIT_ADDC:
1253 return emit_op(compiler, op, flags | CUMULATIVE_OP | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1254
1255 case SLJIT_SUB:
1256 case SLJIT_SUBC:
1257 return emit_op(compiler, op, flags | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1258
1259 case SLJIT_MUL:
1260 return emit_op(compiler, op, flags | CUMULATIVE_OP, dst, dstw, src1, src1w, src2, src2w);
1261
1262 case SLJIT_AND:
1263 case SLJIT_OR:
1264 case SLJIT_XOR:
1265 return emit_op(compiler, op, flags | CUMULATIVE_OP | LOGICAL_OP | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1266
1267 case SLJIT_SHL:
1268 case SLJIT_LSHR:
1269 case SLJIT_ASHR:
1270 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1271 if (src2 & SLJIT_IMM)
1272 src2w &= 0x1f;
1273 #else
1274 if (src2 & SLJIT_IMM) {
1275 if (op & SLJIT_I32_OP)
1276 src2w &= 0x1f;
1277 else
1278 src2w &= 0x3f;
1279 }
1280 #endif
1281 return emit_op(compiler, op, flags | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1282 }
1283
1284 return SLJIT_SUCCESS;
1285
1286 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1287 # undef flags
1288 #endif
1289 }
1290
sljit_get_register_index(sljit_s32 reg)1291 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_register_index(sljit_s32 reg)
1292 {
1293 CHECK_REG_INDEX(check_sljit_get_register_index(reg));
1294 return reg_map[reg];
1295 }
1296
sljit_get_float_register_index(sljit_s32 reg)1297 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_float_register_index(sljit_s32 reg)
1298 {
1299 CHECK_REG_INDEX(check_sljit_get_float_register_index(reg));
1300 return reg << 1;
1301 }
1302
sljit_emit_op_custom(struct sljit_compiler * compiler,void * instruction,sljit_s32 size)1303 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_custom(struct sljit_compiler *compiler,
1304 void *instruction, sljit_s32 size)
1305 {
1306 CHECK_ERROR();
1307 CHECK(check_sljit_emit_op_custom(compiler, instruction, size));
1308
1309 return push_inst(compiler, *(sljit_ins*)instruction, UNMOVABLE_INS);
1310 }
1311
1312 /* --------------------------------------------------------------------- */
1313 /* Floating point operators */
1314 /* --------------------------------------------------------------------- */
1315
1316 #define FLOAT_DATA(op) (DOUBLE_DATA | ((op & SLJIT_F32_OP) >> 7))
1317 #define FMT(op) (((op & SLJIT_F32_OP) ^ SLJIT_F32_OP) << (21 - 8))
1318
sljit_emit_fop1_conv_sw_from_f64(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 dst,sljit_sw dstw,sljit_s32 src,sljit_sw srcw)1319 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_sw_from_f64(struct sljit_compiler *compiler, sljit_s32 op,
1320 sljit_s32 dst, sljit_sw dstw,
1321 sljit_s32 src, sljit_sw srcw)
1322 {
1323 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1324 # define flags 0
1325 #else
1326 sljit_s32 flags = (GET_OPCODE(op) == SLJIT_CONV_SW_FROM_F64) << 21;
1327 #endif
1328
1329 if (src & SLJIT_MEM) {
1330 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src, srcw, dst, dstw));
1331 src = TMP_FREG1;
1332 }
1333 else
1334 src <<= 1;
1335
1336 FAIL_IF(push_inst(compiler, (TRUNC_W_S ^ (flags >> 19)) | FMT(op) | FS(src) | FD(TMP_FREG1), MOVABLE_INS));
1337
1338 if (FAST_IS_REG(dst))
1339 return push_inst(compiler, MFC1 | flags | T(dst) | FS(TMP_FREG1), MOVABLE_INS);
1340
1341 /* Store the integer value from a VFP register. */
1342 return emit_op_mem2(compiler, flags ? DOUBLE_DATA : SINGLE_DATA, TMP_FREG1, dst, dstw, 0, 0);
1343
1344 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1345 # undef is_long
1346 #endif
1347 }
1348
sljit_emit_fop1_conv_f64_from_sw(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 dst,sljit_sw dstw,sljit_s32 src,sljit_sw srcw)1349 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_f64_from_sw(struct sljit_compiler *compiler, sljit_s32 op,
1350 sljit_s32 dst, sljit_sw dstw,
1351 sljit_s32 src, sljit_sw srcw)
1352 {
1353 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1354 # define flags 0
1355 #else
1356 sljit_s32 flags = (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_SW) << 21;
1357 #endif
1358
1359 sljit_s32 dst_r = FAST_IS_REG(dst) ? (dst << 1) : TMP_FREG1;
1360
1361 if (FAST_IS_REG(src))
1362 FAIL_IF(push_inst(compiler, MTC1 | flags | T(src) | FS(TMP_FREG1), MOVABLE_INS));
1363 else if (src & SLJIT_MEM) {
1364 /* Load the integer value into a VFP register. */
1365 FAIL_IF(emit_op_mem2(compiler, ((flags) ? DOUBLE_DATA : SINGLE_DATA) | LOAD_DATA, TMP_FREG1, src, srcw, dst, dstw));
1366 }
1367 else {
1368 #if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
1369 if (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_S32)
1370 srcw = (sljit_s32)srcw;
1371 #endif
1372 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), srcw));
1373 FAIL_IF(push_inst(compiler, MTC1 | flags | T(TMP_REG1) | FS(TMP_FREG1), MOVABLE_INS));
1374 }
1375
1376 FAIL_IF(push_inst(compiler, CVT_S_S | flags | (4 << 21) | (((op & SLJIT_F32_OP) ^ SLJIT_F32_OP) >> 8) | FS(TMP_FREG1) | FD(dst_r), MOVABLE_INS));
1377
1378 if (dst & SLJIT_MEM)
1379 return emit_op_mem2(compiler, FLOAT_DATA(op), TMP_FREG1, dst, dstw, 0, 0);
1380 return SLJIT_SUCCESS;
1381
1382 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1383 # undef flags
1384 #endif
1385 }
1386
sljit_emit_fop1_cmp(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 src1,sljit_sw src1w,sljit_s32 src2,sljit_sw src2w)1387 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_cmp(struct sljit_compiler *compiler, sljit_s32 op,
1388 sljit_s32 src1, sljit_sw src1w,
1389 sljit_s32 src2, sljit_sw src2w)
1390 {
1391 sljit_ins inst;
1392
1393 if (src1 & SLJIT_MEM) {
1394 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w, src2, src2w));
1395 src1 = TMP_FREG1;
1396 }
1397 else
1398 src1 <<= 1;
1399
1400 if (src2 & SLJIT_MEM) {
1401 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w, 0, 0));
1402 src2 = TMP_FREG2;
1403 }
1404 else
1405 src2 <<= 1;
1406
1407 switch (GET_FLAG_TYPE(op)) {
1408 case SLJIT_EQUAL_F64:
1409 case SLJIT_NOT_EQUAL_F64:
1410 inst = C_UEQ_S;
1411 break;
1412 case SLJIT_LESS_F64:
1413 case SLJIT_GREATER_EQUAL_F64:
1414 inst = C_ULT_S;
1415 break;
1416 case SLJIT_GREATER_F64:
1417 case SLJIT_LESS_EQUAL_F64:
1418 inst = C_ULE_S;
1419 break;
1420 default:
1421 SLJIT_ASSERT(GET_FLAG_TYPE(op) == SLJIT_UNORDERED_F64 || GET_FLAG_TYPE(op) == SLJIT_ORDERED_F64);
1422 inst = C_UN_S;
1423 break;
1424 }
1425
1426 return push_inst(compiler, inst | FMT(op) | FT(src2) | FS(src1), UNMOVABLE_INS);
1427 }
1428
sljit_emit_fop1(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 dst,sljit_sw dstw,sljit_s32 src,sljit_sw srcw)1429 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop1(struct sljit_compiler *compiler, sljit_s32 op,
1430 sljit_s32 dst, sljit_sw dstw,
1431 sljit_s32 src, sljit_sw srcw)
1432 {
1433 sljit_s32 dst_r;
1434
1435 CHECK_ERROR();
1436 compiler->cache_arg = 0;
1437 compiler->cache_argw = 0;
1438
1439 SLJIT_COMPILE_ASSERT((SLJIT_F32_OP == 0x100) && !(DOUBLE_DATA & 0x2), float_transfer_bit_error);
1440 SELECT_FOP1_OPERATION_WITH_CHECKS(compiler, op, dst, dstw, src, srcw);
1441
1442 if (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_F32)
1443 op ^= SLJIT_F32_OP;
1444
1445 dst_r = FAST_IS_REG(dst) ? (dst << 1) : TMP_FREG1;
1446
1447 if (src & SLJIT_MEM) {
1448 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op) | LOAD_DATA, dst_r, src, srcw, dst, dstw));
1449 src = dst_r;
1450 }
1451 else
1452 src <<= 1;
1453
1454 switch (GET_OPCODE(op)) {
1455 case SLJIT_MOV_F64:
1456 if (src != dst_r) {
1457 if (dst_r != TMP_FREG1)
1458 FAIL_IF(push_inst(compiler, MOV_S | FMT(op) | FS(src) | FD(dst_r), MOVABLE_INS));
1459 else
1460 dst_r = src;
1461 }
1462 break;
1463 case SLJIT_NEG_F64:
1464 FAIL_IF(push_inst(compiler, NEG_S | FMT(op) | FS(src) | FD(dst_r), MOVABLE_INS));
1465 break;
1466 case SLJIT_ABS_F64:
1467 FAIL_IF(push_inst(compiler, ABS_S | FMT(op) | FS(src) | FD(dst_r), MOVABLE_INS));
1468 break;
1469 case SLJIT_CONV_F64_FROM_F32:
1470 FAIL_IF(push_inst(compiler, CVT_S_S | ((op & SLJIT_F32_OP) ? 1 : (1 << 21)) | FS(src) | FD(dst_r), MOVABLE_INS));
1471 op ^= SLJIT_F32_OP;
1472 break;
1473 }
1474
1475 if (dst & SLJIT_MEM)
1476 return emit_op_mem2(compiler, FLOAT_DATA(op), dst_r, dst, dstw, 0, 0);
1477 return SLJIT_SUCCESS;
1478 }
1479
sljit_emit_fop2(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 dst,sljit_sw dstw,sljit_s32 src1,sljit_sw src1w,sljit_s32 src2,sljit_sw src2w)1480 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop2(struct sljit_compiler *compiler, sljit_s32 op,
1481 sljit_s32 dst, sljit_sw dstw,
1482 sljit_s32 src1, sljit_sw src1w,
1483 sljit_s32 src2, sljit_sw src2w)
1484 {
1485 sljit_s32 dst_r, flags = 0;
1486
1487 CHECK_ERROR();
1488 CHECK(check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w));
1489 ADJUST_LOCAL_OFFSET(dst, dstw);
1490 ADJUST_LOCAL_OFFSET(src1, src1w);
1491 ADJUST_LOCAL_OFFSET(src2, src2w);
1492
1493 compiler->cache_arg = 0;
1494 compiler->cache_argw = 0;
1495
1496 dst_r = FAST_IS_REG(dst) ? (dst << 1) : TMP_FREG2;
1497
1498 if (src1 & SLJIT_MEM) {
1499 if (getput_arg_fast(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w)) {
1500 FAIL_IF(compiler->error);
1501 src1 = TMP_FREG1;
1502 } else
1503 flags |= SLOW_SRC1;
1504 }
1505 else
1506 src1 <<= 1;
1507
1508 if (src2 & SLJIT_MEM) {
1509 if (getput_arg_fast(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w)) {
1510 FAIL_IF(compiler->error);
1511 src2 = TMP_FREG2;
1512 } else
1513 flags |= SLOW_SRC2;
1514 }
1515 else
1516 src2 <<= 1;
1517
1518 if ((flags & (SLOW_SRC1 | SLOW_SRC2)) == (SLOW_SRC1 | SLOW_SRC2)) {
1519 if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
1520 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w, src1, src1w));
1521 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w, dst, dstw));
1522 }
1523 else {
1524 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w, src2, src2w));
1525 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w, dst, dstw));
1526 }
1527 }
1528 else if (flags & SLOW_SRC1)
1529 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w, dst, dstw));
1530 else if (flags & SLOW_SRC2)
1531 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w, dst, dstw));
1532
1533 if (flags & SLOW_SRC1)
1534 src1 = TMP_FREG1;
1535 if (flags & SLOW_SRC2)
1536 src2 = TMP_FREG2;
1537
1538 switch (GET_OPCODE(op)) {
1539 case SLJIT_ADD_F64:
1540 FAIL_IF(push_inst(compiler, ADD_S | FMT(op) | FT(src2) | FS(src1) | FD(dst_r), MOVABLE_INS));
1541 break;
1542
1543 case SLJIT_SUB_F64:
1544 FAIL_IF(push_inst(compiler, SUB_S | FMT(op) | FT(src2) | FS(src1) | FD(dst_r), MOVABLE_INS));
1545 break;
1546
1547 case SLJIT_MUL_F64:
1548 FAIL_IF(push_inst(compiler, MUL_S | FMT(op) | FT(src2) | FS(src1) | FD(dst_r), MOVABLE_INS));
1549 break;
1550
1551 case SLJIT_DIV_F64:
1552 FAIL_IF(push_inst(compiler, DIV_S | FMT(op) | FT(src2) | FS(src1) | FD(dst_r), MOVABLE_INS));
1553 break;
1554 }
1555
1556 if (dst_r == TMP_FREG2)
1557 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op), TMP_FREG2, dst, dstw, 0, 0));
1558
1559 return SLJIT_SUCCESS;
1560 }
1561
1562 /* --------------------------------------------------------------------- */
1563 /* Other instructions */
1564 /* --------------------------------------------------------------------- */
1565
sljit_emit_fast_enter(struct sljit_compiler * compiler,sljit_s32 dst,sljit_sw dstw)1566 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw)
1567 {
1568 CHECK_ERROR();
1569 CHECK(check_sljit_emit_fast_enter(compiler, dst, dstw));
1570 ADJUST_LOCAL_OFFSET(dst, dstw);
1571
1572 if (FAST_IS_REG(dst))
1573 return push_inst(compiler, ADDU_W | SA(RETURN_ADDR_REG) | TA(0) | D(dst), DR(dst));
1574
1575 /* Memory. */
1576 return emit_op_mem(compiler, WORD_DATA, RETURN_ADDR_REG, dst, dstw);
1577 }
1578
sljit_emit_fast_return(struct sljit_compiler * compiler,sljit_s32 src,sljit_sw srcw)1579 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_return(struct sljit_compiler *compiler, sljit_s32 src, sljit_sw srcw)
1580 {
1581 CHECK_ERROR();
1582 CHECK(check_sljit_emit_fast_return(compiler, src, srcw));
1583 ADJUST_LOCAL_OFFSET(src, srcw);
1584
1585 if (FAST_IS_REG(src))
1586 FAIL_IF(push_inst(compiler, ADDU_W | S(src) | TA(0) | DA(RETURN_ADDR_REG), RETURN_ADDR_REG));
1587 else if (src & SLJIT_MEM)
1588 FAIL_IF(emit_op_mem(compiler, WORD_DATA | LOAD_DATA, RETURN_ADDR_REG, src, srcw));
1589 else if (src & SLJIT_IMM)
1590 FAIL_IF(load_immediate(compiler, RETURN_ADDR_REG, srcw));
1591
1592 FAIL_IF(push_inst(compiler, JR | SA(RETURN_ADDR_REG), UNMOVABLE_INS));
1593 return push_inst(compiler, NOP, UNMOVABLE_INS);
1594 }
1595
1596 /* --------------------------------------------------------------------- */
1597 /* Conditional instructions */
1598 /* --------------------------------------------------------------------- */
1599
sljit_emit_label(struct sljit_compiler * compiler)1600 SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler)
1601 {
1602 struct sljit_label *label;
1603
1604 CHECK_ERROR_PTR();
1605 CHECK_PTR(check_sljit_emit_label(compiler));
1606
1607 if (compiler->last_label && compiler->last_label->size == compiler->size)
1608 return compiler->last_label;
1609
1610 label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label));
1611 PTR_FAIL_IF(!label);
1612 set_label(label, compiler);
1613 compiler->delay_slot = UNMOVABLE_INS;
1614 return label;
1615 }
1616
1617 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1618 #define JUMP_LENGTH 4
1619 #else
1620 #define JUMP_LENGTH 8
1621 #endif
1622
1623 #define BR_Z(src) \
1624 inst = BEQ | SA(src) | TA(0) | JUMP_LENGTH; \
1625 flags = IS_BIT26_COND; \
1626 delay_check = src;
1627
1628 #define BR_NZ(src) \
1629 inst = BNE | SA(src) | TA(0) | JUMP_LENGTH; \
1630 flags = IS_BIT26_COND; \
1631 delay_check = src;
1632
1633 #define BR_T() \
1634 inst = BC1T | JUMP_LENGTH; \
1635 flags = IS_BIT16_COND; \
1636 delay_check = FCSR_FCC;
1637
1638 #define BR_F() \
1639 inst = BC1F | JUMP_LENGTH; \
1640 flags = IS_BIT16_COND; \
1641 delay_check = FCSR_FCC;
1642
sljit_emit_jump(struct sljit_compiler * compiler,sljit_s32 type)1643 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, sljit_s32 type)
1644 {
1645 struct sljit_jump *jump;
1646 sljit_ins inst;
1647 sljit_s32 flags = 0;
1648 sljit_s32 delay_check = UNMOVABLE_INS;
1649
1650 CHECK_ERROR_PTR();
1651 CHECK_PTR(check_sljit_emit_jump(compiler, type));
1652
1653 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1654 PTR_FAIL_IF(!jump);
1655 set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1656 type &= 0xff;
1657
1658 switch (type) {
1659 case SLJIT_EQUAL:
1660 BR_NZ(EQUAL_FLAG);
1661 break;
1662 case SLJIT_NOT_EQUAL:
1663 BR_Z(EQUAL_FLAG);
1664 break;
1665 case SLJIT_LESS:
1666 case SLJIT_GREATER:
1667 case SLJIT_SIG_LESS:
1668 case SLJIT_SIG_GREATER:
1669 case SLJIT_OVERFLOW:
1670 case SLJIT_MUL_OVERFLOW:
1671 BR_Z(OTHER_FLAG);
1672 break;
1673 case SLJIT_GREATER_EQUAL:
1674 case SLJIT_LESS_EQUAL:
1675 case SLJIT_SIG_GREATER_EQUAL:
1676 case SLJIT_SIG_LESS_EQUAL:
1677 case SLJIT_NOT_OVERFLOW:
1678 case SLJIT_MUL_NOT_OVERFLOW:
1679 BR_NZ(OTHER_FLAG);
1680 break;
1681 case SLJIT_NOT_EQUAL_F64:
1682 case SLJIT_GREATER_EQUAL_F64:
1683 case SLJIT_GREATER_F64:
1684 case SLJIT_ORDERED_F64:
1685 BR_T();
1686 break;
1687 case SLJIT_EQUAL_F64:
1688 case SLJIT_LESS_F64:
1689 case SLJIT_LESS_EQUAL_F64:
1690 case SLJIT_UNORDERED_F64:
1691 BR_F();
1692 break;
1693 default:
1694 /* Not conditional branch. */
1695 inst = 0;
1696 break;
1697 }
1698
1699 jump->flags |= flags;
1700 if (compiler->delay_slot == MOVABLE_INS || (compiler->delay_slot != UNMOVABLE_INS && compiler->delay_slot != delay_check))
1701 jump->flags |= IS_MOVABLE;
1702
1703 if (inst)
1704 PTR_FAIL_IF(push_inst(compiler, inst, UNMOVABLE_INS));
1705
1706 PTR_FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1707 if (type <= SLJIT_JUMP) {
1708 PTR_FAIL_IF(push_inst(compiler, JR | S(TMP_REG2), UNMOVABLE_INS));
1709 jump->addr = compiler->size;
1710 PTR_FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1711 } else {
1712 SLJIT_ASSERT(DR(PIC_ADDR_REG) == 25 && PIC_ADDR_REG == TMP_REG2);
1713 /* Cannot be optimized out if type is >= CALL0. */
1714 jump->flags |= IS_JAL | (type >= SLJIT_CALL0 ? IS_CALL : 0);
1715 PTR_FAIL_IF(push_inst(compiler, JALR | S(TMP_REG2) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
1716 jump->addr = compiler->size;
1717 /* A NOP if type < CALL1. */
1718 PTR_FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_R0) | TA(0) | DA(4), UNMOVABLE_INS));
1719 }
1720 return jump;
1721 }
1722
1723 #define RESOLVE_IMM1() \
1724 if (src1 & SLJIT_IMM) { \
1725 if (src1w) { \
1726 PTR_FAIL_IF(load_immediate(compiler, DR(TMP_REG1), src1w)); \
1727 src1 = TMP_REG1; \
1728 } \
1729 else \
1730 src1 = 0; \
1731 }
1732
1733 #define RESOLVE_IMM2() \
1734 if (src2 & SLJIT_IMM) { \
1735 if (src2w) { \
1736 PTR_FAIL_IF(load_immediate(compiler, DR(TMP_REG2), src2w)); \
1737 src2 = TMP_REG2; \
1738 } \
1739 else \
1740 src2 = 0; \
1741 }
1742
sljit_emit_cmp(struct sljit_compiler * compiler,sljit_s32 type,sljit_s32 src1,sljit_sw src1w,sljit_s32 src2,sljit_sw src2w)1743 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_cmp(struct sljit_compiler *compiler, sljit_s32 type,
1744 sljit_s32 src1, sljit_sw src1w,
1745 sljit_s32 src2, sljit_sw src2w)
1746 {
1747 struct sljit_jump *jump;
1748 sljit_s32 flags;
1749 sljit_ins inst;
1750
1751 CHECK_ERROR_PTR();
1752 CHECK_PTR(check_sljit_emit_cmp(compiler, type, src1, src1w, src2, src2w));
1753 ADJUST_LOCAL_OFFSET(src1, src1w);
1754 ADJUST_LOCAL_OFFSET(src2, src2w);
1755
1756 compiler->cache_arg = 0;
1757 compiler->cache_argw = 0;
1758 flags = ((type & SLJIT_I32_OP) ? INT_DATA : WORD_DATA) | LOAD_DATA;
1759 if (src1 & SLJIT_MEM) {
1760 PTR_FAIL_IF(emit_op_mem2(compiler, flags, DR(TMP_REG1), src1, src1w, src2, src2w));
1761 src1 = TMP_REG1;
1762 }
1763 if (src2 & SLJIT_MEM) {
1764 PTR_FAIL_IF(emit_op_mem2(compiler, flags, DR(TMP_REG2), src2, src2w, 0, 0));
1765 src2 = TMP_REG2;
1766 }
1767
1768 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1769 PTR_FAIL_IF(!jump);
1770 set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1771 type &= 0xff;
1772
1773 if (type <= SLJIT_NOT_EQUAL) {
1774 RESOLVE_IMM1();
1775 RESOLVE_IMM2();
1776 jump->flags |= IS_BIT26_COND;
1777 if (compiler->delay_slot == MOVABLE_INS || (compiler->delay_slot != UNMOVABLE_INS && compiler->delay_slot != DR(src1) && compiler->delay_slot != DR(src2)))
1778 jump->flags |= IS_MOVABLE;
1779 PTR_FAIL_IF(push_inst(compiler, (type == SLJIT_EQUAL ? BNE : BEQ) | S(src1) | T(src2) | JUMP_LENGTH, UNMOVABLE_INS));
1780 }
1781 else if (type >= SLJIT_SIG_LESS && (((src1 & SLJIT_IMM) && (src1w == 0)) || ((src2 & SLJIT_IMM) && (src2w == 0)))) {
1782 inst = NOP;
1783 if ((src1 & SLJIT_IMM) && (src1w == 0)) {
1784 RESOLVE_IMM2();
1785 switch (type) {
1786 case SLJIT_SIG_LESS:
1787 inst = BLEZ;
1788 jump->flags |= IS_BIT26_COND;
1789 break;
1790 case SLJIT_SIG_GREATER_EQUAL:
1791 inst = BGTZ;
1792 jump->flags |= IS_BIT26_COND;
1793 break;
1794 case SLJIT_SIG_GREATER:
1795 inst = BGEZ;
1796 jump->flags |= IS_BIT16_COND;
1797 break;
1798 case SLJIT_SIG_LESS_EQUAL:
1799 inst = BLTZ;
1800 jump->flags |= IS_BIT16_COND;
1801 break;
1802 }
1803 src1 = src2;
1804 }
1805 else {
1806 RESOLVE_IMM1();
1807 switch (type) {
1808 case SLJIT_SIG_LESS:
1809 inst = BGEZ;
1810 jump->flags |= IS_BIT16_COND;
1811 break;
1812 case SLJIT_SIG_GREATER_EQUAL:
1813 inst = BLTZ;
1814 jump->flags |= IS_BIT16_COND;
1815 break;
1816 case SLJIT_SIG_GREATER:
1817 inst = BLEZ;
1818 jump->flags |= IS_BIT26_COND;
1819 break;
1820 case SLJIT_SIG_LESS_EQUAL:
1821 inst = BGTZ;
1822 jump->flags |= IS_BIT26_COND;
1823 break;
1824 }
1825 }
1826 PTR_FAIL_IF(push_inst(compiler, inst | S(src1) | JUMP_LENGTH, UNMOVABLE_INS));
1827 }
1828 else {
1829 if (type == SLJIT_LESS || type == SLJIT_GREATER_EQUAL || type == SLJIT_SIG_LESS || type == SLJIT_SIG_GREATER_EQUAL) {
1830 RESOLVE_IMM1();
1831 if ((src2 & SLJIT_IMM) && src2w <= SIMM_MAX && src2w >= SIMM_MIN)
1832 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_LESS_EQUAL ? SLTIU : SLTI) | S(src1) | T(TMP_REG1) | IMM(src2w), DR(TMP_REG1)));
1833 else {
1834 RESOLVE_IMM2();
1835 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_LESS_EQUAL ? SLTU : SLT) | S(src1) | T(src2) | D(TMP_REG1), DR(TMP_REG1)));
1836 }
1837 type = (type == SLJIT_LESS || type == SLJIT_SIG_LESS) ? SLJIT_NOT_EQUAL : SLJIT_EQUAL;
1838 }
1839 else {
1840 RESOLVE_IMM2();
1841 if ((src1 & SLJIT_IMM) && src1w <= SIMM_MAX && src1w >= SIMM_MIN)
1842 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_LESS_EQUAL ? SLTIU : SLTI) | S(src2) | T(TMP_REG1) | IMM(src1w), DR(TMP_REG1)));
1843 else {
1844 RESOLVE_IMM1();
1845 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_LESS_EQUAL ? SLTU : SLT) | S(src2) | T(src1) | D(TMP_REG1), DR(TMP_REG1)));
1846 }
1847 type = (type == SLJIT_GREATER || type == SLJIT_SIG_GREATER) ? SLJIT_NOT_EQUAL : SLJIT_EQUAL;
1848 }
1849
1850 jump->flags |= IS_BIT26_COND;
1851 PTR_FAIL_IF(push_inst(compiler, (type == SLJIT_EQUAL ? BNE : BEQ) | S(TMP_REG1) | TA(0) | JUMP_LENGTH, UNMOVABLE_INS));
1852 }
1853
1854 PTR_FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1855 PTR_FAIL_IF(push_inst(compiler, JR | S(TMP_REG2), UNMOVABLE_INS));
1856 jump->addr = compiler->size;
1857 PTR_FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1858 return jump;
1859 }
1860
1861 #undef RESOLVE_IMM1
1862 #undef RESOLVE_IMM2
1863
1864 #undef JUMP_LENGTH
1865 #undef BR_Z
1866 #undef BR_NZ
1867 #undef BR_T
1868 #undef BR_F
1869
1870 #undef FLOAT_DATA
1871 #undef FMT
1872
sljit_emit_ijump(struct sljit_compiler * compiler,sljit_s32 type,sljit_s32 src,sljit_sw srcw)1873 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_ijump(struct sljit_compiler *compiler, sljit_s32 type, sljit_s32 src, sljit_sw srcw)
1874 {
1875 sljit_s32 src_r = TMP_REG2;
1876 struct sljit_jump *jump = NULL;
1877
1878 CHECK_ERROR();
1879 CHECK(check_sljit_emit_ijump(compiler, type, src, srcw));
1880 ADJUST_LOCAL_OFFSET(src, srcw);
1881
1882 if (FAST_IS_REG(src)) {
1883 if (DR(src) != 4)
1884 src_r = src;
1885 else
1886 FAIL_IF(push_inst(compiler, ADDU_W | S(src) | TA(0) | D(TMP_REG2), DR(TMP_REG2)));
1887 }
1888
1889 if (type >= SLJIT_CALL0) {
1890 SLJIT_ASSERT(DR(PIC_ADDR_REG) == 25 && PIC_ADDR_REG == TMP_REG2);
1891 if (src & (SLJIT_IMM | SLJIT_MEM)) {
1892 if (src & SLJIT_IMM)
1893 FAIL_IF(load_immediate(compiler, DR(PIC_ADDR_REG), srcw));
1894 else {
1895 SLJIT_ASSERT(src_r == TMP_REG2 && (src & SLJIT_MEM));
1896 FAIL_IF(emit_op(compiler, SLJIT_MOV, WORD_DATA, TMP_REG2, 0, TMP_REG1, 0, src, srcw));
1897 }
1898 FAIL_IF(push_inst(compiler, JALR | S(PIC_ADDR_REG) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
1899 /* We need an extra instruction in any case. */
1900 return push_inst(compiler, ADDU_W | S(SLJIT_R0) | TA(0) | DA(4), UNMOVABLE_INS);
1901 }
1902
1903 /* Register input. */
1904 if (type >= SLJIT_CALL1)
1905 FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_R0) | TA(0) | DA(4), 4));
1906 FAIL_IF(push_inst(compiler, JALR | S(src_r) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
1907 return push_inst(compiler, ADDU_W | S(src_r) | TA(0) | D(PIC_ADDR_REG), UNMOVABLE_INS);
1908 }
1909
1910 if (src & SLJIT_IMM) {
1911 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1912 FAIL_IF(!jump);
1913 set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_JAL : 0));
1914 jump->u.target = srcw;
1915
1916 if (compiler->delay_slot != UNMOVABLE_INS)
1917 jump->flags |= IS_MOVABLE;
1918
1919 FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1920 }
1921 else if (src & SLJIT_MEM)
1922 FAIL_IF(emit_op(compiler, SLJIT_MOV, WORD_DATA, TMP_REG2, 0, TMP_REG1, 0, src, srcw));
1923
1924 FAIL_IF(push_inst(compiler, JR | S(src_r), UNMOVABLE_INS));
1925 if (jump)
1926 jump->addr = compiler->size;
1927 FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1928 return SLJIT_SUCCESS;
1929 }
1930
sljit_emit_op_flags(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 dst,sljit_sw dstw,sljit_s32 type)1931 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_flags(struct sljit_compiler *compiler, sljit_s32 op,
1932 sljit_s32 dst, sljit_sw dstw,
1933 sljit_s32 type)
1934 {
1935 sljit_s32 src_ar, dst_ar;
1936 sljit_s32 saved_op = op;
1937 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1938 sljit_s32 mem_type = WORD_DATA;
1939 #else
1940 sljit_s32 mem_type = (op & SLJIT_I32_OP) ? (INT_DATA | SIGNED_DATA) : WORD_DATA;
1941 #endif
1942
1943 CHECK_ERROR();
1944 CHECK(check_sljit_emit_op_flags(compiler, op, dst, dstw, type));
1945 ADJUST_LOCAL_OFFSET(dst, dstw);
1946
1947 op = GET_OPCODE(op);
1948 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1949 if (op == SLJIT_MOV_S32)
1950 mem_type = INT_DATA | SIGNED_DATA;
1951 #endif
1952 dst_ar = DR((op < SLJIT_ADD && FAST_IS_REG(dst)) ? dst : TMP_REG2);
1953
1954 compiler->cache_arg = 0;
1955 compiler->cache_argw = 0;
1956
1957 if (op >= SLJIT_ADD && (dst & SLJIT_MEM))
1958 FAIL_IF(emit_op_mem2(compiler, mem_type | LOAD_DATA, DR(TMP_REG1), dst, dstw, dst, dstw));
1959
1960 switch (type & 0xff) {
1961 case SLJIT_EQUAL:
1962 case SLJIT_NOT_EQUAL:
1963 FAIL_IF(push_inst(compiler, SLTIU | SA(EQUAL_FLAG) | TA(dst_ar) | IMM(1), dst_ar));
1964 src_ar = dst_ar;
1965 break;
1966 case SLJIT_MUL_OVERFLOW:
1967 case SLJIT_MUL_NOT_OVERFLOW:
1968 FAIL_IF(push_inst(compiler, SLTIU | SA(OTHER_FLAG) | TA(dst_ar) | IMM(1), dst_ar));
1969 src_ar = dst_ar;
1970 type ^= 0x1; /* Flip type bit for the XORI below. */
1971 break;
1972 case SLJIT_GREATER_F64:
1973 case SLJIT_LESS_EQUAL_F64:
1974 type ^= 0x1; /* Flip type bit for the XORI below. */
1975 case SLJIT_EQUAL_F64:
1976 case SLJIT_NOT_EQUAL_F64:
1977 case SLJIT_LESS_F64:
1978 case SLJIT_GREATER_EQUAL_F64:
1979 case SLJIT_UNORDERED_F64:
1980 case SLJIT_ORDERED_F64:
1981 FAIL_IF(push_inst(compiler, CFC1 | TA(dst_ar) | DA(FCSR_REG), dst_ar));
1982 FAIL_IF(push_inst(compiler, SRL | TA(dst_ar) | DA(dst_ar) | SH_IMM(23), dst_ar));
1983 FAIL_IF(push_inst(compiler, ANDI | SA(dst_ar) | TA(dst_ar) | IMM(1), dst_ar));
1984 src_ar = dst_ar;
1985 break;
1986
1987 default:
1988 src_ar = OTHER_FLAG;
1989 break;
1990 }
1991
1992 if (type & 0x1) {
1993 FAIL_IF(push_inst(compiler, XORI | SA(src_ar) | TA(dst_ar) | IMM(1), dst_ar));
1994 src_ar = dst_ar;
1995 }
1996
1997 if (op < SLJIT_ADD) {
1998 if (dst & SLJIT_MEM)
1999 return emit_op_mem(compiler, mem_type, src_ar, dst, dstw);
2000
2001 if (src_ar != dst_ar)
2002 return push_inst(compiler, ADDU_W | SA(src_ar) | TA(0) | DA(dst_ar), dst_ar);
2003 return SLJIT_SUCCESS;
2004 }
2005
2006 /* OTHER_FLAG cannot be specified as src2 argument at the moment. */
2007 if (DR(TMP_REG2) != src_ar)
2008 FAIL_IF(push_inst(compiler, ADDU_W | SA(src_ar) | TA(0) | D(TMP_REG2), DR(TMP_REG2)));
2009
2010 mem_type |= CUMULATIVE_OP | LOGICAL_OP | IMM_OP | ALT_KEEP_CACHE;
2011
2012 if (dst & SLJIT_MEM)
2013 return emit_op(compiler, saved_op, mem_type, dst, dstw, TMP_REG1, 0, TMP_REG2, 0);
2014 return emit_op(compiler, saved_op, mem_type, dst, dstw, dst, dstw, TMP_REG2, 0);
2015 }
2016
sljit_emit_cmov(struct sljit_compiler * compiler,sljit_s32 type,sljit_s32 dst_reg,sljit_s32 src,sljit_sw srcw)2017 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_cmov(struct sljit_compiler *compiler, sljit_s32 type,
2018 sljit_s32 dst_reg,
2019 sljit_s32 src, sljit_sw srcw)
2020 {
2021 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
2022 sljit_ins ins;
2023 #endif
2024
2025 CHECK_ERROR();
2026 CHECK(check_sljit_emit_cmov(compiler, type, dst_reg, src, srcw));
2027
2028 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
2029
2030 if (SLJIT_UNLIKELY(src & SLJIT_IMM)) {
2031 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
2032 if (dst_reg & SLJIT_I32_OP)
2033 srcw = (sljit_s32)srcw;
2034 #endif
2035 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), srcw));
2036 src = TMP_REG1;
2037 srcw = 0;
2038 }
2039
2040 dst_reg &= ~SLJIT_I32_OP;
2041
2042 switch (type & 0xff) {
2043 case SLJIT_EQUAL:
2044 ins = MOVZ | TA(EQUAL_FLAG);
2045 break;
2046 case SLJIT_NOT_EQUAL:
2047 ins = MOVN | TA(EQUAL_FLAG);
2048 break;
2049 case SLJIT_LESS:
2050 case SLJIT_GREATER:
2051 case SLJIT_SIG_LESS:
2052 case SLJIT_SIG_GREATER:
2053 case SLJIT_OVERFLOW:
2054 case SLJIT_MUL_OVERFLOW:
2055 ins = MOVN | TA(OTHER_FLAG);
2056 break;
2057 case SLJIT_GREATER_EQUAL:
2058 case SLJIT_LESS_EQUAL:
2059 case SLJIT_SIG_GREATER_EQUAL:
2060 case SLJIT_SIG_LESS_EQUAL:
2061 case SLJIT_NOT_OVERFLOW:
2062 case SLJIT_MUL_NOT_OVERFLOW:
2063 ins = MOVZ | TA(OTHER_FLAG);
2064 break;
2065 case SLJIT_EQUAL_F64:
2066 case SLJIT_LESS_F64:
2067 case SLJIT_LESS_EQUAL_F64:
2068 case SLJIT_UNORDERED_F64:
2069 ins = MOVT;
2070 break;
2071 case SLJIT_NOT_EQUAL_F64:
2072 case SLJIT_GREATER_EQUAL_F64:
2073 case SLJIT_GREATER_F64:
2074 case SLJIT_ORDERED_F64:
2075 ins = MOVF;
2076 break;
2077 default:
2078 ins = MOVZ | TA(OTHER_FLAG);
2079 SLJIT_UNREACHABLE();
2080 break;
2081 }
2082
2083 return push_inst(compiler, ins | S(src) | D(dst_reg), DR(dst_reg));
2084
2085 #else
2086 return sljit_emit_cmov_generic(compiler, type, dst_reg, src, srcw);
2087 #endif
2088 }
2089
sljit_emit_const(struct sljit_compiler * compiler,sljit_s32 dst,sljit_sw dstw,sljit_sw init_value)2090 SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw, sljit_sw init_value)
2091 {
2092 struct sljit_const *const_;
2093 sljit_s32 reg;
2094
2095 CHECK_ERROR_PTR();
2096 CHECK_PTR(check_sljit_emit_const(compiler, dst, dstw, init_value));
2097 ADJUST_LOCAL_OFFSET(dst, dstw);
2098
2099 const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const));
2100 PTR_FAIL_IF(!const_);
2101 set_const(const_, compiler);
2102
2103 reg = FAST_IS_REG(dst) ? dst : TMP_REG2;
2104
2105 PTR_FAIL_IF(emit_const(compiler, reg, init_value));
2106
2107 if (dst & SLJIT_MEM)
2108 PTR_FAIL_IF(emit_op(compiler, SLJIT_MOV, WORD_DATA, dst, dstw, TMP_REG1, 0, TMP_REG2, 0));
2109 return const_;
2110 }
2111
