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 sljit_sw fir = 0;
502
503 switch (feature_type) {
504 case SLJIT_HAS_FPU:
505 #ifdef SLJIT_IS_FPU_AVAILABLE
506 return SLJIT_IS_FPU_AVAILABLE;
507 #elif defined(__GNUC__)
508 asm ("cfc1 %0, $0" : "=r"(fir));
509 return (fir >> 22) & 0x1;
510 #else
511 #error "FIR check is not implemented for this architecture"
512 #endif
513
514 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
515 case SLJIT_HAS_CLZ:
516 case SLJIT_HAS_CMOV:
517 return 1;
518 #endif
519
520 default:
521 return fir;
522 }
523 }
524
525 /* --------------------------------------------------------------------- */
526 /* Entry, exit */
527 /* --------------------------------------------------------------------- */
528
529 /* Creates an index in data_transfer_insts array. */
530 #define LOAD_DATA 0x01
531 #define WORD_DATA 0x00
532 #define BYTE_DATA 0x02
533 #define HALF_DATA 0x04
534 #define INT_DATA 0x06
535 #define SIGNED_DATA 0x08
536 /* Separates integer and floating point registers */
537 #define GPR_REG 0x0f
538 #define DOUBLE_DATA 0x10
539 #define SINGLE_DATA 0x12
540
541 #define MEM_MASK 0x1f
542
543 #define WRITE_BACK 0x00020
544 #define ARG_TEST 0x00040
545 #define ALT_KEEP_CACHE 0x00080
546 #define CUMULATIVE_OP 0x00100
547 #define LOGICAL_OP 0x00200
548 #define IMM_OP 0x00400
549 #define SRC2_IMM 0x00800
550
551 #define UNUSED_DEST 0x01000
552 #define REG_DEST 0x02000
553 #define REG1_SOURCE 0x04000
554 #define REG2_SOURCE 0x08000
555 #define SLOW_SRC1 0x10000
556 #define SLOW_SRC2 0x20000
557 #define SLOW_DEST 0x40000
558
559 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
560 #define STACK_STORE SW
561 #define STACK_LOAD LW
562 #else
563 #define STACK_STORE SD
564 #define STACK_LOAD LD
565 #endif
566
567 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
568 #include "sljitNativeMIPS_32.c"
569 #else
570 #include "sljitNativeMIPS_64.c"
571 #endif
572
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)573 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compiler,
574 sljit_s32 options, sljit_s32 args, sljit_s32 scratches, sljit_s32 saveds,
575 sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size)
576 {
577 sljit_ins base;
578 sljit_s32 i, tmp, offs;
579
580 CHECK_ERROR();
581 CHECK(check_sljit_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size));
582 set_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size);
583
584 local_size += GET_SAVED_REGISTERS_SIZE(scratches, saveds, 1) + SLJIT_LOCALS_OFFSET;
585 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
586 local_size = (local_size + 15) & ~0xf;
587 #else
588 local_size = (local_size + 31) & ~0x1f;
589 #endif
590 compiler->local_size = local_size;
591
592 if (local_size <= SIMM_MAX) {
593 /* Frequent case. */
594 FAIL_IF(push_inst(compiler, ADDIU_W | S(SLJIT_SP) | T(SLJIT_SP) | IMM(-local_size), DR(SLJIT_SP)));
595 base = S(SLJIT_SP);
596 }
597 else {
598 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), local_size));
599 FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_SP) | TA(0) | D(TMP_REG2), DR(TMP_REG2)));
600 FAIL_IF(push_inst(compiler, SUBU_W | S(SLJIT_SP) | T(TMP_REG1) | D(SLJIT_SP), DR(SLJIT_SP)));
601 base = S(TMP_REG2);
602 local_size = 0;
603 }
604
605 offs = local_size - (sljit_sw)(sizeof(sljit_sw));
606 FAIL_IF(push_inst(compiler, STACK_STORE | base | TA(RETURN_ADDR_REG) | IMM(offs), MOVABLE_INS));
607
608 tmp = saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - saveds) : SLJIT_FIRST_SAVED_REG;
609 for (i = SLJIT_S0; i >= tmp; i--) {
610 offs -= (sljit_s32)(sizeof(sljit_sw));
611 FAIL_IF(push_inst(compiler, STACK_STORE | base | T(i) | IMM(offs), MOVABLE_INS));
612 }
613
614 for (i = scratches; i >= SLJIT_FIRST_SAVED_REG; i--) {
615 offs -= (sljit_s32)(sizeof(sljit_sw));
616 FAIL_IF(push_inst(compiler, STACK_STORE | base | T(i) | IMM(offs), MOVABLE_INS));
617 }
618
619 if (args >= 1)
620 FAIL_IF(push_inst(compiler, ADDU_W | SA(4) | TA(0) | D(SLJIT_S0), DR(SLJIT_S0)));
621 if (args >= 2)
622 FAIL_IF(push_inst(compiler, ADDU_W | SA(5) | TA(0) | D(SLJIT_S1), DR(SLJIT_S1)));
623 if (args >= 3)
624 FAIL_IF(push_inst(compiler, ADDU_W | SA(6) | TA(0) | D(SLJIT_S2), DR(SLJIT_S2)));
625
626 return SLJIT_SUCCESS;
627 }
628
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)629 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_set_context(struct sljit_compiler *compiler,
630 sljit_s32 options, sljit_s32 args, sljit_s32 scratches, sljit_s32 saveds,
631 sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size)
632 {
633 CHECK_ERROR();
634 CHECK(check_sljit_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size));
635 set_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size);
636
637 local_size += GET_SAVED_REGISTERS_SIZE(scratches, saveds, 1) + SLJIT_LOCALS_OFFSET;
638 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
639 compiler->local_size = (local_size + 15) & ~0xf;
640 #else
641 compiler->local_size = (local_size + 31) & ~0x1f;
642 #endif
643 return SLJIT_SUCCESS;
644 }
645
sljit_emit_return(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 src,sljit_sw srcw)646 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 src, sljit_sw srcw)
647 {
648 sljit_s32 local_size, i, tmp, offs;
649 sljit_ins base;
650
651 CHECK_ERROR();
652 CHECK(check_sljit_emit_return(compiler, op, src, srcw));
653
654 FAIL_IF(emit_mov_before_return(compiler, op, src, srcw));
655
656 local_size = compiler->local_size;
657 if (local_size <= SIMM_MAX)
658 base = S(SLJIT_SP);
659 else {
660 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), local_size));
661 FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_SP) | T(TMP_REG1) | D(TMP_REG1), DR(TMP_REG1)));
662 base = S(TMP_REG1);
663 local_size = 0;
664 }
665
666 FAIL_IF(push_inst(compiler, STACK_LOAD | base | TA(RETURN_ADDR_REG) | IMM(local_size - (sljit_s32)sizeof(sljit_sw)), RETURN_ADDR_REG));
667 offs = local_size - (sljit_s32)GET_SAVED_REGISTERS_SIZE(compiler->scratches, compiler->saveds, 1);
668
669 tmp = compiler->scratches;
670 for (i = SLJIT_FIRST_SAVED_REG; i <= tmp; i++) {
671 FAIL_IF(push_inst(compiler, STACK_LOAD | base | T(i) | IMM(offs), DR(i)));
672 offs += (sljit_s32)(sizeof(sljit_sw));
673 }
674
675 tmp = compiler->saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - compiler->saveds) : SLJIT_FIRST_SAVED_REG;
676 for (i = tmp; i <= SLJIT_S0; i++) {
677 FAIL_IF(push_inst(compiler, STACK_LOAD | base | T(i) | IMM(offs), DR(i)));
678 offs += (sljit_s32)(sizeof(sljit_sw));
679 }
680
681 SLJIT_ASSERT(offs == local_size - (sljit_sw)(sizeof(sljit_sw)));
682
683 FAIL_IF(push_inst(compiler, JR | SA(RETURN_ADDR_REG), UNMOVABLE_INS));
684 if (compiler->local_size <= SIMM_MAX)
685 return push_inst(compiler, ADDIU_W | S(SLJIT_SP) | T(SLJIT_SP) | IMM(compiler->local_size), UNMOVABLE_INS);
686 else
687 return push_inst(compiler, ADDU_W | S(TMP_REG1) | TA(0) | D(SLJIT_SP), UNMOVABLE_INS);
688 }
689
690 #undef STACK_STORE
691 #undef STACK_LOAD
692
693 /* --------------------------------------------------------------------- */
694 /* Operators */
695 /* --------------------------------------------------------------------- */
696
697 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
698 #define ARCH_32_64(a, b) a
699 #else
700 #define ARCH_32_64(a, b) b
701 #endif
702
703 static const sljit_ins data_transfer_insts[16 + 4] = {
704 /* u w s */ ARCH_32_64(HI(43) /* sw */, HI(63) /* sd */),
705 /* u w l */ ARCH_32_64(HI(35) /* lw */, HI(55) /* ld */),
706 /* u b s */ HI(40) /* sb */,
707 /* u b l */ HI(36) /* lbu */,
708 /* u h s */ HI(41) /* sh */,
709 /* u h l */ HI(37) /* lhu */,
710 /* u i s */ HI(43) /* sw */,
711 /* u i l */ ARCH_32_64(HI(35) /* lw */, HI(39) /* lwu */),
712
713 /* s w s */ ARCH_32_64(HI(43) /* sw */, HI(63) /* sd */),
714 /* s w l */ ARCH_32_64(HI(35) /* lw */, HI(55) /* ld */),
715 /* s b s */ HI(40) /* sb */,
716 /* s b l */ HI(32) /* lb */,
717 /* s h s */ HI(41) /* sh */,
718 /* s h l */ HI(33) /* lh */,
719 /* s i s */ HI(43) /* sw */,
720 /* s i l */ HI(35) /* lw */,
721
722 /* d s */ HI(61) /* sdc1 */,
723 /* d l */ HI(53) /* ldc1 */,
724 /* s s */ HI(57) /* swc1 */,
725 /* s l */ HI(49) /* lwc1 */,
726 };
727
728 #undef ARCH_32_64
729
730 /* reg_ar is an absoulute register! */
731
732 /* 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)733 static sljit_s32 getput_arg_fast(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg_ar, sljit_s32 arg, sljit_sw argw)
734 {
735 SLJIT_ASSERT(arg & SLJIT_MEM);
736
737 if ((!(flags & WRITE_BACK) || !(arg & REG_MASK)) && !(arg & OFFS_REG_MASK) && argw <= SIMM_MAX && argw >= SIMM_MIN) {
738 /* Works for both absoulte and relative addresses. */
739 if (SLJIT_UNLIKELY(flags & ARG_TEST))
740 return 1;
741 FAIL_IF(push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(arg & REG_MASK)
742 | TA(reg_ar) | IMM(argw), ((flags & MEM_MASK) <= GPR_REG && (flags & LOAD_DATA)) ? reg_ar : MOVABLE_INS));
743 return -1;
744 }
745 return 0;
746 }
747
748 /* See getput_arg below.
749 Note: can_cache is called only for binary operators. Those
750 operators always uses word arguments without write back. */
can_cache(sljit_s32 arg,sljit_sw argw,sljit_s32 next_arg,sljit_sw next_argw)751 static sljit_s32 can_cache(sljit_s32 arg, sljit_sw argw, sljit_s32 next_arg, sljit_sw next_argw)
752 {
753 SLJIT_ASSERT((arg & SLJIT_MEM) && (next_arg & SLJIT_MEM));
754
755 /* Simple operation except for updates. */
756 if (arg & OFFS_REG_MASK) {
757 argw &= 0x3;
758 next_argw &= 0x3;
759 if (argw && argw == next_argw && (arg == next_arg || (arg & OFFS_REG_MASK) == (next_arg & OFFS_REG_MASK)))
760 return 1;
761 return 0;
762 }
763
764 if (arg == next_arg) {
765 if (((next_argw - argw) <= SIMM_MAX && (next_argw - argw) >= SIMM_MIN))
766 return 1;
767 return 0;
768 }
769
770 return 0;
771 }
772
773 /* 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)774 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)
775 {
776 sljit_s32 tmp_ar, base, delay_slot;
777
778 SLJIT_ASSERT(arg & SLJIT_MEM);
779 if (!(next_arg & SLJIT_MEM)) {
780 next_arg = 0;
781 next_argw = 0;
782 }
783
784 if ((flags & MEM_MASK) <= GPR_REG && (flags & LOAD_DATA)) {
785 tmp_ar = reg_ar;
786 delay_slot = reg_ar;
787 } else {
788 tmp_ar = DR(TMP_REG1);
789 delay_slot = MOVABLE_INS;
790 }
791 base = arg & REG_MASK;
792
793 if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) {
794 if (SLJIT_UNLIKELY(flags & WRITE_BACK)) {
795 SLJIT_ASSERT(argw == 0);
796 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(OFFS_REG(arg)) | D(base), DR(base)));
797 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar), delay_slot);
798 }
799
800 argw &= 0x3;
801
802 /* Using the cache. */
803 if (argw == compiler->cache_argw) {
804 if (arg == compiler->cache_arg)
805 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
806
807 if ((SLJIT_MEM | (arg & OFFS_REG_MASK)) == compiler->cache_arg) {
808 if (arg == next_arg && argw == (next_argw & 0x3)) {
809 compiler->cache_arg = arg;
810 compiler->cache_argw = argw;
811 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(TMP_REG3), DR(TMP_REG3)));
812 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
813 }
814 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | DA(tmp_ar), tmp_ar));
815 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | SA(tmp_ar) | TA(reg_ar), delay_slot);
816 }
817 }
818
819 if (SLJIT_UNLIKELY(argw)) {
820 compiler->cache_arg = SLJIT_MEM | (arg & OFFS_REG_MASK);
821 compiler->cache_argw = argw;
822 FAIL_IF(push_inst(compiler, SLL_W | T(OFFS_REG(arg)) | D(TMP_REG3) | SH_IMM(argw), DR(TMP_REG3)));
823 }
824
825 if (arg == next_arg && argw == (next_argw & 0x3)) {
826 compiler->cache_arg = arg;
827 compiler->cache_argw = argw;
828 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(!argw ? OFFS_REG(arg) : TMP_REG3) | D(TMP_REG3), DR(TMP_REG3)));
829 tmp_ar = DR(TMP_REG3);
830 }
831 else
832 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(!argw ? OFFS_REG(arg) : TMP_REG3) | DA(tmp_ar), tmp_ar));
833 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | SA(tmp_ar) | TA(reg_ar), delay_slot);
834 }
835
836 if (SLJIT_UNLIKELY(flags & WRITE_BACK) && base) {
837 if (argw <= SIMM_MAX && argw >= SIMM_MIN) {
838 if (argw)
839 FAIL_IF(push_inst(compiler, ADDIU_W | S(base) | T(base) | IMM(argw), DR(base)));
840 }
841 else {
842 if (compiler->cache_arg == SLJIT_MEM && argw - compiler->cache_argw <= SIMM_MAX && argw - compiler->cache_argw >= SIMM_MIN) {
843 if (argw != compiler->cache_argw) {
844 FAIL_IF(push_inst(compiler, ADDIU_W | S(TMP_REG3) | T(TMP_REG3) | IMM(argw - compiler->cache_argw), DR(TMP_REG3)));
845 compiler->cache_argw = argw;
846 }
847 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(base), DR(base)));
848 }
849 else {
850 compiler->cache_arg = SLJIT_MEM;
851 compiler->cache_argw = argw;
852 FAIL_IF(load_immediate(compiler, DR(TMP_REG3), argw));
853 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(base), DR(base)));
854 }
855 }
856 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar), delay_slot);
857 }
858
859 if (compiler->cache_arg == arg && argw - compiler->cache_argw <= SIMM_MAX && argw - compiler->cache_argw >= SIMM_MIN) {
860 if (argw != compiler->cache_argw) {
861 FAIL_IF(push_inst(compiler, ADDIU_W | S(TMP_REG3) | T(TMP_REG3) | IMM(argw - compiler->cache_argw), DR(TMP_REG3)));
862 compiler->cache_argw = argw;
863 }
864 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
865 }
866
867 if (compiler->cache_arg == SLJIT_MEM && argw - compiler->cache_argw <= SIMM_MAX && argw - compiler->cache_argw >= SIMM_MIN) {
868 if (argw != compiler->cache_argw)
869 FAIL_IF(push_inst(compiler, ADDIU_W | S(TMP_REG3) | T(TMP_REG3) | IMM(argw - compiler->cache_argw), DR(TMP_REG3)));
870 }
871 else {
872 compiler->cache_arg = SLJIT_MEM;
873 FAIL_IF(load_immediate(compiler, DR(TMP_REG3), argw));
874 }
875 compiler->cache_argw = argw;
876
877 if (!base)
878 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
879
880 if (arg == next_arg && next_argw - argw <= SIMM_MAX && next_argw - argw >= SIMM_MIN) {
881 compiler->cache_arg = arg;
882 FAIL_IF(push_inst(compiler, ADDU_W | S(TMP_REG3) | T(base) | D(TMP_REG3), DR(TMP_REG3)));
883 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
884 }
885
886 FAIL_IF(push_inst(compiler, ADDU_W | S(TMP_REG3) | T(base) | DA(tmp_ar), tmp_ar));
887 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | SA(tmp_ar) | TA(reg_ar), delay_slot);
888 }
889
emit_op_mem(struct sljit_compiler * compiler,sljit_s32 flags,sljit_s32 reg_ar,sljit_s32 arg,sljit_sw argw)890 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)
891 {
892 if (getput_arg_fast(compiler, flags, reg_ar, arg, argw))
893 return compiler->error;
894 compiler->cache_arg = 0;
895 compiler->cache_argw = 0;
896 return getput_arg(compiler, flags, reg_ar, arg, argw, 0, 0);
897 }
898
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 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)
900 {
901 if (getput_arg_fast(compiler, flags, reg, arg1, arg1w))
902 return compiler->error;
903 return getput_arg(compiler, flags, reg, arg1, arg1w, arg2, arg2w);
904 }
905
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)906 static sljit_s32 emit_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 flags,
907 sljit_s32 dst, sljit_sw dstw,
908 sljit_s32 src1, sljit_sw src1w,
909 sljit_s32 src2, sljit_sw src2w)
910 {
911 /* arg1 goes to TMP_REG1 or src reg
912 arg2 goes to TMP_REG2, imm or src reg
913 TMP_REG3 can be used for caching
914 result goes to TMP_REG2, so put result can use TMP_REG1 and TMP_REG3. */
915 sljit_s32 dst_r = TMP_REG2;
916 sljit_s32 src1_r;
917 sljit_sw src2_r = 0;
918 sljit_s32 sugg_src2_r = TMP_REG2;
919
920 if (!(flags & ALT_KEEP_CACHE)) {
921 compiler->cache_arg = 0;
922 compiler->cache_argw = 0;
923 }
924
925 if (SLJIT_UNLIKELY(dst == SLJIT_UNUSED)) {
926 SLJIT_ASSERT(HAS_FLAGS(op));
927 flags |= UNUSED_DEST;
928 }
929 else if (FAST_IS_REG(dst)) {
930 dst_r = dst;
931 flags |= REG_DEST;
932 if (op >= SLJIT_MOV && op <= SLJIT_MOVU_S32)
933 sugg_src2_r = dst_r;
934 }
935 else if ((dst & SLJIT_MEM) && !getput_arg_fast(compiler, flags | ARG_TEST, DR(TMP_REG1), dst, dstw))
936 flags |= SLOW_DEST;
937
938 if (flags & IMM_OP) {
939 if ((src2 & SLJIT_IMM) && src2w) {
940 if ((!(flags & LOGICAL_OP) && (src2w <= SIMM_MAX && src2w >= SIMM_MIN))
941 || ((flags & LOGICAL_OP) && !(src2w & ~UIMM_MAX))) {
942 flags |= SRC2_IMM;
943 src2_r = src2w;
944 }
945 }
946 if (!(flags & SRC2_IMM) && (flags & CUMULATIVE_OP) && (src1 & SLJIT_IMM) && src1w) {
947 if ((!(flags & LOGICAL_OP) && (src1w <= SIMM_MAX && src1w >= SIMM_MIN))
948 || ((flags & LOGICAL_OP) && !(src1w & ~UIMM_MAX))) {
949 flags |= SRC2_IMM;
950 src2_r = src1w;
951
952 /* And swap arguments. */
953 src1 = src2;
954 src1w = src2w;
955 src2 = SLJIT_IMM;
956 /* src2w = src2_r unneeded. */
957 }
958 }
959 }
960
961 /* Source 1. */
962 if (FAST_IS_REG(src1)) {
963 src1_r = src1;
964 flags |= REG1_SOURCE;
965 }
966 else if (src1 & SLJIT_IMM) {
967 if (src1w) {
968 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), src1w));
969 src1_r = TMP_REG1;
970 }
971 else
972 src1_r = 0;
973 }
974 else {
975 if (getput_arg_fast(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w))
976 FAIL_IF(compiler->error);
977 else
978 flags |= SLOW_SRC1;
979 src1_r = TMP_REG1;
980 }
981
982 /* Source 2. */
983 if (FAST_IS_REG(src2)) {
984 src2_r = src2;
985 flags |= REG2_SOURCE;
986 if (!(flags & REG_DEST) && op >= SLJIT_MOV && op <= SLJIT_MOVU_S32)
987 dst_r = src2_r;
988 }
989 else if (src2 & SLJIT_IMM) {
990 if (!(flags & SRC2_IMM)) {
991 if (src2w) {
992 FAIL_IF(load_immediate(compiler, DR(sugg_src2_r), src2w));
993 src2_r = sugg_src2_r;
994 }
995 else {
996 src2_r = 0;
997 if ((op >= SLJIT_MOV && op <= SLJIT_MOVU_S32) && (dst & SLJIT_MEM))
998 dst_r = 0;
999 }
1000 }
1001 }
1002 else {
1003 if (getput_arg_fast(compiler, flags | LOAD_DATA, DR(sugg_src2_r), src2, src2w))
1004 FAIL_IF(compiler->error);
1005 else
1006 flags |= SLOW_SRC2;
1007 src2_r = sugg_src2_r;
1008 }
1009
1010 if ((flags & (SLOW_SRC1 | SLOW_SRC2)) == (SLOW_SRC1 | SLOW_SRC2)) {
1011 SLJIT_ASSERT(src2_r == TMP_REG2);
1012 if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
1013 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG2), src2, src2w, src1, src1w));
1014 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w, dst, dstw));
1015 }
1016 else {
1017 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w, src2, src2w));
1018 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG2), src2, src2w, dst, dstw));
1019 }
1020 }
1021 else if (flags & SLOW_SRC1)
1022 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w, dst, dstw));
1023 else if (flags & SLOW_SRC2)
1024 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(sugg_src2_r), src2, src2w, dst, dstw));
1025
1026 FAIL_IF(emit_single_op(compiler, op, flags, dst_r, src1_r, src2_r));
1027
1028 if (dst & SLJIT_MEM) {
1029 if (!(flags & SLOW_DEST)) {
1030 getput_arg_fast(compiler, flags, DR(dst_r), dst, dstw);
1031 return compiler->error;
1032 }
1033 return getput_arg(compiler, flags, DR(dst_r), dst, dstw, 0, 0);
1034 }
1035
1036 return SLJIT_SUCCESS;
1037 }
1038
sljit_emit_op0(struct sljit_compiler * compiler,sljit_s32 op)1039 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op0(struct sljit_compiler *compiler, sljit_s32 op)
1040 {
1041 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1042 sljit_s32 int_op = op & SLJIT_I32_OP;
1043 #endif
1044
1045 CHECK_ERROR();
1046 CHECK(check_sljit_emit_op0(compiler, op));
1047
1048 op = GET_OPCODE(op);
1049 switch (op) {
1050 case SLJIT_BREAKPOINT:
1051 return push_inst(compiler, BREAK, UNMOVABLE_INS);
1052 case SLJIT_NOP:
1053 return push_inst(compiler, NOP, UNMOVABLE_INS);
1054 case SLJIT_LMUL_UW:
1055 case SLJIT_LMUL_SW:
1056 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1057 FAIL_IF(push_inst(compiler, (op == SLJIT_LMUL_UW ? DMULTU : DMULT) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1058 #else
1059 FAIL_IF(push_inst(compiler, (op == SLJIT_LMUL_UW ? MULTU : MULT) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1060 #endif
1061 FAIL_IF(push_inst(compiler, MFLO | D(SLJIT_R0), DR(SLJIT_R0)));
1062 return push_inst(compiler, MFHI | D(SLJIT_R1), DR(SLJIT_R1));
1063 case SLJIT_DIVMOD_UW:
1064 case SLJIT_DIVMOD_SW:
1065 case SLJIT_DIV_UW:
1066 case SLJIT_DIV_SW:
1067 SLJIT_COMPILE_ASSERT((SLJIT_DIVMOD_UW & 0x2) == 0 && SLJIT_DIV_UW - 0x2 == SLJIT_DIVMOD_UW, bad_div_opcode_assignments);
1068 #if !(defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
1069 FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1070 FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1071 #endif
1072
1073 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1074 if (int_op)
1075 FAIL_IF(push_inst(compiler, ((op | 0x2) == SLJIT_DIV_UW ? DIVU : DIV) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1076 else
1077 FAIL_IF(push_inst(compiler, ((op | 0x2) == SLJIT_DIV_UW ? DDIVU : DDIV) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1078 #else
1079 FAIL_IF(push_inst(compiler, ((op | 0x2) == SLJIT_DIV_UW ? DIVU : DIV) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1080 #endif
1081
1082 FAIL_IF(push_inst(compiler, MFLO | D(SLJIT_R0), DR(SLJIT_R0)));
1083 return (op >= SLJIT_DIV_UW) ? SLJIT_SUCCESS : push_inst(compiler, MFHI | D(SLJIT_R1), DR(SLJIT_R1));
1084 }
1085
1086 return SLJIT_SUCCESS;
1087 }
1088
1089 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
emit_prefetch(struct sljit_compiler * compiler,sljit_s32 src,sljit_sw srcw)1090 static sljit_s32 emit_prefetch(struct sljit_compiler *compiler,
1091 sljit_s32 src, sljit_sw srcw)
1092 {
1093 if (!(src & OFFS_REG_MASK)) {
1094 if (srcw <= SIMM_MAX && srcw >= SIMM_MIN)
1095 return push_inst(compiler, PREF | S(src & REG_MASK) | IMM(srcw), MOVABLE_INS);
1096
1097 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), srcw));
1098 return push_inst(compiler, PREFX | S(src & REG_MASK) | T(TMP_REG1), MOVABLE_INS);
1099 }
1100
1101 srcw &= 0x3;
1102
1103 if (SLJIT_UNLIKELY(srcw != 0)) {
1104 FAIL_IF(push_inst(compiler, SLL_W | T(OFFS_REG(src)) | D(TMP_REG1) | SH_IMM(srcw), DR(TMP_REG1)));
1105 return push_inst(compiler, PREFX | S(src & REG_MASK) | T(TMP_REG1), MOVABLE_INS);
1106 }
1107
1108 return push_inst(compiler, PREFX | S(src & REG_MASK) | T(OFFS_REG(src)), MOVABLE_INS);
1109 }
1110 #endif
1111
sljit_emit_op1(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 dst,sljit_sw dstw,sljit_s32 src,sljit_sw srcw)1112 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op1(struct sljit_compiler *compiler, sljit_s32 op,
1113 sljit_s32 dst, sljit_sw dstw,
1114 sljit_s32 src, sljit_sw srcw)
1115 {
1116 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1117 # define flags 0
1118 #else
1119 sljit_s32 flags = 0;
1120 #endif
1121
1122 CHECK_ERROR();
1123 CHECK(check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw));
1124 ADJUST_LOCAL_OFFSET(dst, dstw);
1125 ADJUST_LOCAL_OFFSET(src, srcw);
1126
1127 if (dst == SLJIT_UNUSED && !HAS_FLAGS(op)) {
1128 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
1129 if (op <= SLJIT_MOV_P && (src & SLJIT_MEM))
1130 return emit_prefetch(compiler, src, srcw);
1131 #endif
1132 return SLJIT_SUCCESS;
1133 }
1134
1135 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1136 if ((op & SLJIT_I32_OP) && GET_OPCODE(op) >= SLJIT_NOT) {
1137 flags |= INT_DATA | SIGNED_DATA;
1138 if (src & SLJIT_IMM)
1139 srcw = (sljit_s32)srcw;
1140 }
1141 #endif
1142
1143 switch (GET_OPCODE(op)) {
1144 case SLJIT_MOV:
1145 case SLJIT_MOV_P:
1146 return emit_op(compiler, SLJIT_MOV, WORD_DATA, dst, dstw, TMP_REG1, 0, src, srcw);
1147
1148 case SLJIT_MOV_U32:
1149 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1150 return emit_op(compiler, SLJIT_MOV_U32, INT_DATA, dst, dstw, TMP_REG1, 0, src, srcw);
1151 #else
1152 return emit_op(compiler, SLJIT_MOV_U32, INT_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u32)srcw : srcw);
1153 #endif
1154
1155 case SLJIT_MOV_S32:
1156 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1157 return emit_op(compiler, SLJIT_MOV_S32, INT_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, srcw);
1158 #else
1159 return emit_op(compiler, SLJIT_MOV_S32, INT_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_s32)srcw : srcw);
1160 #endif
1161
1162 case SLJIT_MOV_U8:
1163 return emit_op(compiler, SLJIT_MOV_U8, BYTE_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u8)srcw : srcw);
1164
1165 case SLJIT_MOV_S8:
1166 return emit_op(compiler, SLJIT_MOV_S8, BYTE_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_s8)srcw : srcw);
1167
1168 case SLJIT_MOV_U16:
1169 return emit_op(compiler, SLJIT_MOV_U16, HALF_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u16)srcw : srcw);
1170
1171 case SLJIT_MOV_S16:
1172 return emit_op(compiler, SLJIT_MOV_S16, HALF_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_s16)srcw : srcw);
1173
1174 case SLJIT_MOVU:
1175 case SLJIT_MOVU_P:
1176 return emit_op(compiler, SLJIT_MOV, WORD_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1177
1178 case SLJIT_MOVU_U32:
1179 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1180 return emit_op(compiler, SLJIT_MOV_U32, INT_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1181 #else
1182 return emit_op(compiler, SLJIT_MOV_U32, INT_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u32)srcw : srcw);
1183 #endif
1184
1185 case SLJIT_MOVU_S32:
1186 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1187 return emit_op(compiler, SLJIT_MOV_S32, INT_DATA | SIGNED_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1188 #else
1189 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);
1190 #endif
1191
1192 case SLJIT_MOVU_U8:
1193 return emit_op(compiler, SLJIT_MOV_U8, BYTE_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u8)srcw : srcw);
1194
1195 case SLJIT_MOVU_S8:
1196 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);
1197
1198 case SLJIT_MOVU_U16:
1199 return emit_op(compiler, SLJIT_MOV_U16, HALF_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u16)srcw : srcw);
1200
1201 case SLJIT_MOVU_S16:
1202 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);
1203
1204 case SLJIT_NOT:
1205 return emit_op(compiler, op, flags, dst, dstw, TMP_REG1, 0, src, srcw);
1206
1207 case SLJIT_NEG:
1208 return emit_op(compiler, SLJIT_SUB | GET_ALL_FLAGS(op), flags | IMM_OP, dst, dstw, SLJIT_IMM, 0, src, srcw);
1209
1210 case SLJIT_CLZ:
1211 return emit_op(compiler, op, flags, dst, dstw, TMP_REG1, 0, src, srcw);
1212 }
1213
1214 return SLJIT_SUCCESS;
1215
1216 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1217 # undef flags
1218 #endif
1219 }
1220
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)1221 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op2(struct sljit_compiler *compiler, sljit_s32 op,
1222 sljit_s32 dst, sljit_sw dstw,
1223 sljit_s32 src1, sljit_sw src1w,
1224 sljit_s32 src2, sljit_sw src2w)
1225 {
1226 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1227 # define flags 0
1228 #else
1229 sljit_s32 flags = 0;
1230 #endif
1231
1232 CHECK_ERROR();
1233 CHECK(check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w));
1234 ADJUST_LOCAL_OFFSET(dst, dstw);
1235 ADJUST_LOCAL_OFFSET(src1, src1w);
1236 ADJUST_LOCAL_OFFSET(src2, src2w);
1237
1238 if (dst == SLJIT_UNUSED && !HAS_FLAGS(op))
1239 return SLJIT_SUCCESS;
1240
1241 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1242 if (op & SLJIT_I32_OP) {
1243 flags |= INT_DATA | SIGNED_DATA;
1244 if (src1 & SLJIT_IMM)
1245 src1w = (sljit_s32)src1w;
1246 if (src2 & SLJIT_IMM)
1247 src2w = (sljit_s32)src2w;
1248 }
1249 #endif
1250
1251 switch (GET_OPCODE(op)) {
1252 case SLJIT_ADD:
1253 case SLJIT_ADDC:
1254 return emit_op(compiler, op, flags | CUMULATIVE_OP | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1255
1256 case SLJIT_SUB:
1257 case SLJIT_SUBC:
1258 return emit_op(compiler, op, flags | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1259
1260 case SLJIT_MUL:
1261 return emit_op(compiler, op, flags | CUMULATIVE_OP, dst, dstw, src1, src1w, src2, src2w);
1262
1263 case SLJIT_AND:
1264 case SLJIT_OR:
1265 case SLJIT_XOR:
1266 return emit_op(compiler, op, flags | CUMULATIVE_OP | LOGICAL_OP | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1267
1268 case SLJIT_SHL:
1269 case SLJIT_LSHR:
1270 case SLJIT_ASHR:
1271 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1272 if (src2 & SLJIT_IMM)
1273 src2w &= 0x1f;
1274 #else
1275 if (src2 & SLJIT_IMM) {
1276 if (op & SLJIT_I32_OP)
1277 src2w &= 0x1f;
1278 else
1279 src2w &= 0x3f;
1280 }
1281 #endif
1282 return emit_op(compiler, op, flags | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1283 }
1284
1285 return SLJIT_SUCCESS;
1286
1287 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1288 # undef flags
1289 #endif
1290 }
1291
sljit_get_register_index(sljit_s32 reg)1292 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_register_index(sljit_s32 reg)
1293 {
1294 CHECK_REG_INDEX(check_sljit_get_register_index(reg));
1295 return reg_map[reg];
1296 }
1297
sljit_get_float_register_index(sljit_s32 reg)1298 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_float_register_index(sljit_s32 reg)
1299 {
1300 CHECK_REG_INDEX(check_sljit_get_float_register_index(reg));
1301 return reg << 1;
1302 }
1303
sljit_emit_op_custom(struct sljit_compiler * compiler,void * instruction,sljit_s32 size)1304 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_custom(struct sljit_compiler *compiler,
1305 void *instruction, sljit_s32 size)
1306 {
1307 CHECK_ERROR();
1308 CHECK(check_sljit_emit_op_custom(compiler, instruction, size));
1309
1310 return push_inst(compiler, *(sljit_ins*)instruction, UNMOVABLE_INS);
1311 }
1312
1313 /* --------------------------------------------------------------------- */
1314 /* Floating point operators */
1315 /* --------------------------------------------------------------------- */
1316
1317 #define FLOAT_DATA(op) (DOUBLE_DATA | ((op & SLJIT_F32_OP) >> 7))
1318 #define FMT(op) (((op & SLJIT_F32_OP) ^ SLJIT_F32_OP) << (21 - 8))
1319
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)1320 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_sw_from_f64(struct sljit_compiler *compiler, sljit_s32 op,
1321 sljit_s32 dst, sljit_sw dstw,
1322 sljit_s32 src, sljit_sw srcw)
1323 {
1324 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1325 # define flags 0
1326 #else
1327 sljit_s32 flags = (GET_OPCODE(op) == SLJIT_CONV_SW_FROM_F64) << 21;
1328 #endif
1329
1330 if (src & SLJIT_MEM) {
1331 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src, srcw, dst, dstw));
1332 src = TMP_FREG1;
1333 }
1334 else
1335 src <<= 1;
1336
1337 FAIL_IF(push_inst(compiler, (TRUNC_W_S ^ (flags >> 19)) | FMT(op) | FS(src) | FD(TMP_FREG1), MOVABLE_INS));
1338
1339 if (FAST_IS_REG(dst))
1340 return push_inst(compiler, MFC1 | flags | T(dst) | FS(TMP_FREG1), MOVABLE_INS);
1341
1342 /* Store the integer value from a VFP register. */
1343 return emit_op_mem2(compiler, flags ? DOUBLE_DATA : SINGLE_DATA, TMP_FREG1, dst, dstw, 0, 0);
1344
1345 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1346 # undef is_long
1347 #endif
1348 }
1349
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)1350 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_f64_from_sw(struct sljit_compiler *compiler, sljit_s32 op,
1351 sljit_s32 dst, sljit_sw dstw,
1352 sljit_s32 src, sljit_sw srcw)
1353 {
1354 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1355 # define flags 0
1356 #else
1357 sljit_s32 flags = (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_SW) << 21;
1358 #endif
1359
1360 sljit_s32 dst_r = FAST_IS_REG(dst) ? (dst << 1) : TMP_FREG1;
1361
1362 if (FAST_IS_REG(src))
1363 FAIL_IF(push_inst(compiler, MTC1 | flags | T(src) | FS(TMP_FREG1), MOVABLE_INS));
1364 else if (src & SLJIT_MEM) {
1365 /* Load the integer value into a VFP register. */
1366 FAIL_IF(emit_op_mem2(compiler, ((flags) ? DOUBLE_DATA : SINGLE_DATA) | LOAD_DATA, TMP_FREG1, src, srcw, dst, dstw));
1367 }
1368 else {
1369 #if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
1370 if (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_S32)
1371 srcw = (sljit_s32)srcw;
1372 #endif
1373 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), srcw));
1374 FAIL_IF(push_inst(compiler, MTC1 | flags | T(TMP_REG1) | FS(TMP_FREG1), MOVABLE_INS));
1375 }
1376
1377 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));
1378
1379 if (dst & SLJIT_MEM)
1380 return emit_op_mem2(compiler, FLOAT_DATA(op), TMP_FREG1, dst, dstw, 0, 0);
1381 return SLJIT_SUCCESS;
1382
1383 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1384 # undef flags
1385 #endif
1386 }
1387
sljit_emit_fop1_cmp(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 src1,sljit_sw src1w,sljit_s32 src2,sljit_sw src2w)1388 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_cmp(struct sljit_compiler *compiler, sljit_s32 op,
1389 sljit_s32 src1, sljit_sw src1w,
1390 sljit_s32 src2, sljit_sw src2w)
1391 {
1392 sljit_ins inst;
1393
1394 if (src1 & SLJIT_MEM) {
1395 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w, src2, src2w));
1396 src1 = TMP_FREG1;
1397 }
1398 else
1399 src1 <<= 1;
1400
1401 if (src2 & SLJIT_MEM) {
1402 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w, 0, 0));
1403 src2 = TMP_FREG2;
1404 }
1405 else
1406 src2 <<= 1;
1407
1408 switch (GET_FLAG_TYPE(op)) {
1409 case SLJIT_EQUAL_F64:
1410 case SLJIT_NOT_EQUAL_F64:
1411 inst = C_UEQ_S;
1412 break;
1413 case SLJIT_LESS_F64:
1414 case SLJIT_GREATER_EQUAL_F64:
1415 inst = C_ULT_S;
1416 break;
1417 case SLJIT_GREATER_F64:
1418 case SLJIT_LESS_EQUAL_F64:
1419 inst = C_ULE_S;
1420 break;
1421 default:
1422 SLJIT_ASSERT(GET_FLAG_TYPE(op) == SLJIT_UNORDERED_F64 || GET_FLAG_TYPE(op) == SLJIT_ORDERED_F64);
1423 inst = C_UN_S;
1424 break;
1425 }
1426
1427 return push_inst(compiler, inst | FMT(op) | FT(src2) | FS(src1), UNMOVABLE_INS);
1428 }
1429
sljit_emit_fop1(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 dst,sljit_sw dstw,sljit_s32 src,sljit_sw srcw)1430 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop1(struct sljit_compiler *compiler, sljit_s32 op,
1431 sljit_s32 dst, sljit_sw dstw,
1432 sljit_s32 src, sljit_sw srcw)
1433 {
1434 sljit_s32 dst_r;
1435
1436 CHECK_ERROR();
1437 compiler->cache_arg = 0;
1438 compiler->cache_argw = 0;
1439
1440 SLJIT_COMPILE_ASSERT((SLJIT_F32_OP == 0x100) && !(DOUBLE_DATA & 0x2), float_transfer_bit_error);
1441 SELECT_FOP1_OPERATION_WITH_CHECKS(compiler, op, dst, dstw, src, srcw);
1442
1443 if (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_F32)
1444 op ^= SLJIT_F32_OP;
1445
1446 dst_r = FAST_IS_REG(dst) ? (dst << 1) : TMP_FREG1;
1447
1448 if (src & SLJIT_MEM) {
1449 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op) | LOAD_DATA, dst_r, src, srcw, dst, dstw));
1450 src = dst_r;
1451 }
1452 else
1453 src <<= 1;
1454
1455 switch (GET_OPCODE(op)) {
1456 case SLJIT_MOV_F64:
1457 if (src != dst_r) {
1458 if (dst_r != TMP_FREG1)
1459 FAIL_IF(push_inst(compiler, MOV_S | FMT(op) | FS(src) | FD(dst_r), MOVABLE_INS));
1460 else
1461 dst_r = src;
1462 }
1463 break;
1464 case SLJIT_NEG_F64:
1465 FAIL_IF(push_inst(compiler, NEG_S | FMT(op) | FS(src) | FD(dst_r), MOVABLE_INS));
1466 break;
1467 case SLJIT_ABS_F64:
1468 FAIL_IF(push_inst(compiler, ABS_S | FMT(op) | FS(src) | FD(dst_r), MOVABLE_INS));
1469 break;
1470 case SLJIT_CONV_F64_FROM_F32:
1471 FAIL_IF(push_inst(compiler, CVT_S_S | ((op & SLJIT_F32_OP) ? 1 : (1 << 21)) | FS(src) | FD(dst_r), MOVABLE_INS));
1472 op ^= SLJIT_F32_OP;
1473 break;
1474 }
1475
1476 if (dst & SLJIT_MEM)
1477 return emit_op_mem2(compiler, FLOAT_DATA(op), dst_r, dst, dstw, 0, 0);
1478 return SLJIT_SUCCESS;
1479 }
1480
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)1481 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop2(struct sljit_compiler *compiler, sljit_s32 op,
1482 sljit_s32 dst, sljit_sw dstw,
1483 sljit_s32 src1, sljit_sw src1w,
1484 sljit_s32 src2, sljit_sw src2w)
1485 {
1486 sljit_s32 dst_r, flags = 0;
1487
1488 CHECK_ERROR();
1489 CHECK(check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w));
1490 ADJUST_LOCAL_OFFSET(dst, dstw);
1491 ADJUST_LOCAL_OFFSET(src1, src1w);
1492 ADJUST_LOCAL_OFFSET(src2, src2w);
1493
1494 compiler->cache_arg = 0;
1495 compiler->cache_argw = 0;
1496
1497 dst_r = FAST_IS_REG(dst) ? (dst << 1) : TMP_FREG2;
1498
1499 if (src1 & SLJIT_MEM) {
1500 if (getput_arg_fast(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w)) {
1501 FAIL_IF(compiler->error);
1502 src1 = TMP_FREG1;
1503 } else
1504 flags |= SLOW_SRC1;
1505 }
1506 else
1507 src1 <<= 1;
1508
1509 if (src2 & SLJIT_MEM) {
1510 if (getput_arg_fast(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w)) {
1511 FAIL_IF(compiler->error);
1512 src2 = TMP_FREG2;
1513 } else
1514 flags |= SLOW_SRC2;
1515 }
1516 else
1517 src2 <<= 1;
1518
1519 if ((flags & (SLOW_SRC1 | SLOW_SRC2)) == (SLOW_SRC1 | SLOW_SRC2)) {
1520 if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
1521 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w, src1, src1w));
1522 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w, dst, dstw));
1523 }
1524 else {
1525 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w, src2, src2w));
1526 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w, dst, dstw));
1527 }
1528 }
1529 else if (flags & SLOW_SRC1)
1530 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w, dst, dstw));
1531 else if (flags & SLOW_SRC2)
1532 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w, dst, dstw));
1533
1534 if (flags & SLOW_SRC1)
1535 src1 = TMP_FREG1;
1536 if (flags & SLOW_SRC2)
1537 src2 = TMP_FREG2;
1538
1539 switch (GET_OPCODE(op)) {
1540 case SLJIT_ADD_F64:
1541 FAIL_IF(push_inst(compiler, ADD_S | FMT(op) | FT(src2) | FS(src1) | FD(dst_r), MOVABLE_INS));
1542 break;
1543
1544 case SLJIT_SUB_F64:
1545 FAIL_IF(push_inst(compiler, SUB_S | FMT(op) | FT(src2) | FS(src1) | FD(dst_r), MOVABLE_INS));
1546 break;
1547
1548 case SLJIT_MUL_F64:
1549 FAIL_IF(push_inst(compiler, MUL_S | FMT(op) | FT(src2) | FS(src1) | FD(dst_r), MOVABLE_INS));
1550 break;
1551
1552 case SLJIT_DIV_F64:
1553 FAIL_IF(push_inst(compiler, DIV_S | FMT(op) | FT(src2) | FS(src1) | FD(dst_r), MOVABLE_INS));
1554 break;
1555 }
1556
1557 if (dst_r == TMP_FREG2)
1558 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op), TMP_FREG2, dst, dstw, 0, 0));
1559
1560 return SLJIT_SUCCESS;
1561 }
1562
1563 /* --------------------------------------------------------------------- */
1564 /* Other instructions */
1565 /* --------------------------------------------------------------------- */
1566
sljit_emit_fast_enter(struct sljit_compiler * compiler,sljit_s32 dst,sljit_sw dstw)1567 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw)
1568 {
1569 CHECK_ERROR();
1570 CHECK(check_sljit_emit_fast_enter(compiler, dst, dstw));
1571 ADJUST_LOCAL_OFFSET(dst, dstw);
1572
1573 if (FAST_IS_REG(dst))
1574 return push_inst(compiler, ADDU_W | SA(RETURN_ADDR_REG) | TA(0) | D(dst), DR(dst));
1575
1576 /* Memory. */
1577 return emit_op_mem(compiler, WORD_DATA, RETURN_ADDR_REG, dst, dstw);
1578 }
1579
sljit_emit_fast_return(struct sljit_compiler * compiler,sljit_s32 src,sljit_sw srcw)1580 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_return(struct sljit_compiler *compiler, sljit_s32 src, sljit_sw srcw)
1581 {
1582 CHECK_ERROR();
1583 CHECK(check_sljit_emit_fast_return(compiler, src, srcw));
1584 ADJUST_LOCAL_OFFSET(src, srcw);
1585
1586 if (FAST_IS_REG(src))
1587 FAIL_IF(push_inst(compiler, ADDU_W | S(src) | TA(0) | DA(RETURN_ADDR_REG), RETURN_ADDR_REG));
1588 else if (src & SLJIT_MEM)
1589 FAIL_IF(emit_op_mem(compiler, WORD_DATA | LOAD_DATA, RETURN_ADDR_REG, src, srcw));
1590 else if (src & SLJIT_IMM)
1591 FAIL_IF(load_immediate(compiler, RETURN_ADDR_REG, srcw));
1592
1593 FAIL_IF(push_inst(compiler, JR | SA(RETURN_ADDR_REG), UNMOVABLE_INS));
1594 return push_inst(compiler, NOP, UNMOVABLE_INS);
1595 }
1596
1597 /* --------------------------------------------------------------------- */
1598 /* Conditional instructions */
1599 /* --------------------------------------------------------------------- */
1600
sljit_emit_label(struct sljit_compiler * compiler)1601 SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler)
1602 {
1603 struct sljit_label *label;
1604
1605 CHECK_ERROR_PTR();
1606 CHECK_PTR(check_sljit_emit_label(compiler));
1607
1608 if (compiler->last_label && compiler->last_label->size == compiler->size)
1609 return compiler->last_label;
1610
1611 label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label));
1612 PTR_FAIL_IF(!label);
1613 set_label(label, compiler);
1614 compiler->delay_slot = UNMOVABLE_INS;
1615 return label;
1616 }
1617
1618 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1619 #define JUMP_LENGTH 4
1620 #else
1621 #define JUMP_LENGTH 8
1622 #endif
1623
1624 #define BR_Z(src) \
1625 inst = BEQ | SA(src) | TA(0) | JUMP_LENGTH; \
1626 flags = IS_BIT26_COND; \
1627 delay_check = src;
1628
1629 #define BR_NZ(src) \
1630 inst = BNE | SA(src) | TA(0) | JUMP_LENGTH; \
1631 flags = IS_BIT26_COND; \
1632 delay_check = src;
1633
1634 #define BR_T() \
1635 inst = BC1T | JUMP_LENGTH; \
1636 flags = IS_BIT16_COND; \
1637 delay_check = FCSR_FCC;
1638
1639 #define BR_F() \
1640 inst = BC1F | JUMP_LENGTH; \
1641 flags = IS_BIT16_COND; \
1642 delay_check = FCSR_FCC;
1643
sljit_emit_jump(struct sljit_compiler * compiler,sljit_s32 type)1644 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, sljit_s32 type)
1645 {
1646 struct sljit_jump *jump;
1647 sljit_ins inst;
1648 sljit_s32 flags = 0;
1649 sljit_s32 delay_check = UNMOVABLE_INS;
1650
1651 CHECK_ERROR_PTR();
1652 CHECK_PTR(check_sljit_emit_jump(compiler, type));
1653
1654 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1655 PTR_FAIL_IF(!jump);
1656 set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1657 type &= 0xff;
1658
1659 switch (type) {
1660 case SLJIT_EQUAL:
1661 BR_NZ(EQUAL_FLAG);
1662 break;
1663 case SLJIT_NOT_EQUAL:
1664 BR_Z(EQUAL_FLAG);
1665 break;
1666 case SLJIT_LESS:
1667 case SLJIT_GREATER:
1668 case SLJIT_SIG_LESS:
1669 case SLJIT_SIG_GREATER:
1670 case SLJIT_OVERFLOW:
1671 case SLJIT_MUL_OVERFLOW:
1672 BR_Z(OTHER_FLAG);
1673 break;
1674 case SLJIT_GREATER_EQUAL:
1675 case SLJIT_LESS_EQUAL:
1676 case SLJIT_SIG_GREATER_EQUAL:
1677 case SLJIT_SIG_LESS_EQUAL:
1678 case SLJIT_NOT_OVERFLOW:
1679 case SLJIT_MUL_NOT_OVERFLOW:
1680 BR_NZ(OTHER_FLAG);
1681 break;
1682 case SLJIT_NOT_EQUAL_F64:
1683 case SLJIT_GREATER_EQUAL_F64:
1684 case SLJIT_GREATER_F64:
1685 case SLJIT_ORDERED_F64:
1686 BR_T();
1687 break;
1688 case SLJIT_EQUAL_F64:
1689 case SLJIT_LESS_F64:
1690 case SLJIT_LESS_EQUAL_F64:
1691 case SLJIT_UNORDERED_F64:
1692 BR_F();
1693 break;
1694 default:
1695 /* Not conditional branch. */
1696 inst = 0;
1697 break;
1698 }
1699
1700 jump->flags |= flags;
1701 if (compiler->delay_slot == MOVABLE_INS || (compiler->delay_slot != UNMOVABLE_INS && compiler->delay_slot != delay_check))
1702 jump->flags |= IS_MOVABLE;
1703
1704 if (inst)
1705 PTR_FAIL_IF(push_inst(compiler, inst, UNMOVABLE_INS));
1706
1707 PTR_FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1708 if (type <= SLJIT_JUMP) {
1709 PTR_FAIL_IF(push_inst(compiler, JR | S(TMP_REG2), UNMOVABLE_INS));
1710 jump->addr = compiler->size;
1711 PTR_FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1712 } else {
1713 SLJIT_ASSERT(DR(PIC_ADDR_REG) == 25 && PIC_ADDR_REG == TMP_REG2);
1714 /* Cannot be optimized out if type is >= CALL0. */
1715 jump->flags |= IS_JAL | (type >= SLJIT_CALL0 ? IS_CALL : 0);
1716 PTR_FAIL_IF(push_inst(compiler, JALR | S(TMP_REG2) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
1717 jump->addr = compiler->size;
1718 /* A NOP if type < CALL1. */
1719 PTR_FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_R0) | TA(0) | DA(4), UNMOVABLE_INS));
1720 }
1721 return jump;
1722 }
1723
1724 #define RESOLVE_IMM1() \
1725 if (src1 & SLJIT_IMM) { \
1726 if (src1w) { \
1727 PTR_FAIL_IF(load_immediate(compiler, DR(TMP_REG1), src1w)); \
1728 src1 = TMP_REG1; \
1729 } \
1730 else \
1731 src1 = 0; \
1732 }
1733
1734 #define RESOLVE_IMM2() \
1735 if (src2 & SLJIT_IMM) { \
1736 if (src2w) { \
1737 PTR_FAIL_IF(load_immediate(compiler, DR(TMP_REG2), src2w)); \
1738 src2 = TMP_REG2; \
1739 } \
1740 else \
1741 src2 = 0; \
1742 }
1743
sljit_emit_cmp(struct sljit_compiler * compiler,sljit_s32 type,sljit_s32 src1,sljit_sw src1w,sljit_s32 src2,sljit_sw src2w)1744 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_cmp(struct sljit_compiler *compiler, sljit_s32 type,
1745 sljit_s32 src1, sljit_sw src1w,
1746 sljit_s32 src2, sljit_sw src2w)
1747 {
1748 struct sljit_jump *jump;
1749 sljit_s32 flags;
1750 sljit_ins inst;
1751
1752 CHECK_ERROR_PTR();
1753 CHECK_PTR(check_sljit_emit_cmp(compiler, type, src1, src1w, src2, src2w));
1754 ADJUST_LOCAL_OFFSET(src1, src1w);
1755 ADJUST_LOCAL_OFFSET(src2, src2w);
1756
1757 compiler->cache_arg = 0;
1758 compiler->cache_argw = 0;
1759 flags = ((type & SLJIT_I32_OP) ? INT_DATA : WORD_DATA) | LOAD_DATA;
1760 if (src1 & SLJIT_MEM) {
1761 PTR_FAIL_IF(emit_op_mem2(compiler, flags, DR(TMP_REG1), src1, src1w, src2, src2w));
1762 src1 = TMP_REG1;
1763 }
1764 if (src2 & SLJIT_MEM) {
1765 PTR_FAIL_IF(emit_op_mem2(compiler, flags, DR(TMP_REG2), src2, src2w, 0, 0));
1766 src2 = TMP_REG2;
1767 }
1768
1769 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1770 PTR_FAIL_IF(!jump);
1771 set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1772 type &= 0xff;
1773
1774 if (type <= SLJIT_NOT_EQUAL) {
1775 RESOLVE_IMM1();
1776 RESOLVE_IMM2();
1777 jump->flags |= IS_BIT26_COND;
1778 if (compiler->delay_slot == MOVABLE_INS || (compiler->delay_slot != UNMOVABLE_INS && compiler->delay_slot != DR(src1) && compiler->delay_slot != DR(src2)))
1779 jump->flags |= IS_MOVABLE;
1780 PTR_FAIL_IF(push_inst(compiler, (type == SLJIT_EQUAL ? BNE : BEQ) | S(src1) | T(src2) | JUMP_LENGTH, UNMOVABLE_INS));
1781 }
1782 else if (type >= SLJIT_SIG_LESS && (((src1 & SLJIT_IMM) && (src1w == 0)) || ((src2 & SLJIT_IMM) && (src2w == 0)))) {
1783 inst = NOP;
1784 if ((src1 & SLJIT_IMM) && (src1w == 0)) {
1785 RESOLVE_IMM2();
1786 switch (type) {
1787 case SLJIT_SIG_LESS:
1788 inst = BLEZ;
1789 jump->flags |= IS_BIT26_COND;
1790 break;
1791 case SLJIT_SIG_GREATER_EQUAL:
1792 inst = BGTZ;
1793 jump->flags |= IS_BIT26_COND;
1794 break;
1795 case SLJIT_SIG_GREATER:
1796 inst = BGEZ;
1797 jump->flags |= IS_BIT16_COND;
1798 break;
1799 case SLJIT_SIG_LESS_EQUAL:
1800 inst = BLTZ;
1801 jump->flags |= IS_BIT16_COND;
1802 break;
1803 }
1804 src1 = src2;
1805 }
1806 else {
1807 RESOLVE_IMM1();
1808 switch (type) {
1809 case SLJIT_SIG_LESS:
1810 inst = BGEZ;
1811 jump->flags |= IS_BIT16_COND;
1812 break;
1813 case SLJIT_SIG_GREATER_EQUAL:
1814 inst = BLTZ;
1815 jump->flags |= IS_BIT16_COND;
1816 break;
1817 case SLJIT_SIG_GREATER:
1818 inst = BLEZ;
1819 jump->flags |= IS_BIT26_COND;
1820 break;
1821 case SLJIT_SIG_LESS_EQUAL:
1822 inst = BGTZ;
1823 jump->flags |= IS_BIT26_COND;
1824 break;
1825 }
1826 }
1827 PTR_FAIL_IF(push_inst(compiler, inst | S(src1) | JUMP_LENGTH, UNMOVABLE_INS));
1828 }
1829 else {
1830 if (type == SLJIT_LESS || type == SLJIT_GREATER_EQUAL || type == SLJIT_SIG_LESS || type == SLJIT_SIG_GREATER_EQUAL) {
1831 RESOLVE_IMM1();
1832 if ((src2 & SLJIT_IMM) && src2w <= SIMM_MAX && src2w >= SIMM_MIN)
1833 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_LESS_EQUAL ? SLTIU : SLTI) | S(src1) | T(TMP_REG1) | IMM(src2w), DR(TMP_REG1)));
1834 else {
1835 RESOLVE_IMM2();
1836 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_LESS_EQUAL ? SLTU : SLT) | S(src1) | T(src2) | D(TMP_REG1), DR(TMP_REG1)));
1837 }
1838 type = (type == SLJIT_LESS || type == SLJIT_SIG_LESS) ? SLJIT_NOT_EQUAL : SLJIT_EQUAL;
1839 }
1840 else {
1841 RESOLVE_IMM2();
1842 if ((src1 & SLJIT_IMM) && src1w <= SIMM_MAX && src1w >= SIMM_MIN)
1843 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_LESS_EQUAL ? SLTIU : SLTI) | S(src2) | T(TMP_REG1) | IMM(src1w), DR(TMP_REG1)));
1844 else {
1845 RESOLVE_IMM1();
1846 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_LESS_EQUAL ? SLTU : SLT) | S(src2) | T(src1) | D(TMP_REG1), DR(TMP_REG1)));
1847 }
1848 type = (type == SLJIT_GREATER || type == SLJIT_SIG_GREATER) ? SLJIT_NOT_EQUAL : SLJIT_EQUAL;
1849 }
1850
1851 jump->flags |= IS_BIT26_COND;
1852 PTR_FAIL_IF(push_inst(compiler, (type == SLJIT_EQUAL ? BNE : BEQ) | S(TMP_REG1) | TA(0) | JUMP_LENGTH, UNMOVABLE_INS));
1853 }
1854
1855 PTR_FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1856 PTR_FAIL_IF(push_inst(compiler, JR | S(TMP_REG2), UNMOVABLE_INS));
1857 jump->addr = compiler->size;
1858 PTR_FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1859 return jump;
1860 }
1861
1862 #undef RESOLVE_IMM1
1863 #undef RESOLVE_IMM2
1864
1865 #undef JUMP_LENGTH
1866 #undef BR_Z
1867 #undef BR_NZ
1868 #undef BR_T
1869 #undef BR_F
1870
1871 #undef FLOAT_DATA
1872 #undef FMT
1873
sljit_emit_ijump(struct sljit_compiler * compiler,sljit_s32 type,sljit_s32 src,sljit_sw srcw)1874 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_ijump(struct sljit_compiler *compiler, sljit_s32 type, sljit_s32 src, sljit_sw srcw)
1875 {
1876 sljit_s32 src_r = TMP_REG2;
1877 struct sljit_jump *jump = NULL;
1878
1879 CHECK_ERROR();
1880 CHECK(check_sljit_emit_ijump(compiler, type, src, srcw));
1881 ADJUST_LOCAL_OFFSET(src, srcw);
1882
1883 if (FAST_IS_REG(src)) {
1884 if (DR(src) != 4)
1885 src_r = src;
1886 else
1887 FAIL_IF(push_inst(compiler, ADDU_W | S(src) | TA(0) | D(TMP_REG2), DR(TMP_REG2)));
1888 }
1889
1890 if (type >= SLJIT_CALL0) {
1891 SLJIT_ASSERT(DR(PIC_ADDR_REG) == 25 && PIC_ADDR_REG == TMP_REG2);
1892 if (src & (SLJIT_IMM | SLJIT_MEM)) {
1893 if (src & SLJIT_IMM)
1894 FAIL_IF(load_immediate(compiler, DR(PIC_ADDR_REG), srcw));
1895 else {
1896 SLJIT_ASSERT(src_r == TMP_REG2 && (src & SLJIT_MEM));
1897 FAIL_IF(emit_op(compiler, SLJIT_MOV, WORD_DATA, TMP_REG2, 0, TMP_REG1, 0, src, srcw));
1898 }
1899 FAIL_IF(push_inst(compiler, JALR | S(PIC_ADDR_REG) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
1900 /* We need an extra instruction in any case. */
1901 return push_inst(compiler, ADDU_W | S(SLJIT_R0) | TA(0) | DA(4), UNMOVABLE_INS);
1902 }
1903
1904 /* Register input. */
1905 if (type >= SLJIT_CALL1)
1906 FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_R0) | TA(0) | DA(4), 4));
1907 FAIL_IF(push_inst(compiler, JALR | S(src_r) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
1908 return push_inst(compiler, ADDU_W | S(src_r) | TA(0) | D(PIC_ADDR_REG), UNMOVABLE_INS);
1909 }
1910
1911 if (src & SLJIT_IMM) {
1912 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1913 FAIL_IF(!jump);
1914 set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_JAL : 0));
1915 jump->u.target = srcw;
1916
1917 if (compiler->delay_slot != UNMOVABLE_INS)
1918 jump->flags |= IS_MOVABLE;
1919
1920 FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1921 }
1922 else if (src & SLJIT_MEM)
1923 FAIL_IF(emit_op(compiler, SLJIT_MOV, WORD_DATA, TMP_REG2, 0, TMP_REG1, 0, src, srcw));
1924
1925 FAIL_IF(push_inst(compiler, JR | S(src_r), UNMOVABLE_INS));
1926 if (jump)
1927 jump->addr = compiler->size;
1928 FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1929 return SLJIT_SUCCESS;
1930 }
1931
sljit_emit_op_flags(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 dst,sljit_sw dstw,sljit_s32 type)1932 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_flags(struct sljit_compiler *compiler, sljit_s32 op,
1933 sljit_s32 dst, sljit_sw dstw,
1934 sljit_s32 type)
1935 {
1936 sljit_s32 src_ar, dst_ar;
1937 sljit_s32 saved_op = op;
1938 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1939 sljit_s32 mem_type = WORD_DATA;
1940 #else
1941 sljit_s32 mem_type = (op & SLJIT_I32_OP) ? (INT_DATA | SIGNED_DATA) : WORD_DATA;
1942 #endif
1943
1944 CHECK_ERROR();
1945 CHECK(check_sljit_emit_op_flags(compiler, op, dst, dstw, type));
1946 ADJUST_LOCAL_OFFSET(dst, dstw);
1947
1948 op = GET_OPCODE(op);
1949 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1950 if (op == SLJIT_MOV_S32)
1951 mem_type = INT_DATA | SIGNED_DATA;
1952 #endif
1953 dst_ar = DR((op < SLJIT_ADD && FAST_IS_REG(dst)) ? dst : TMP_REG2);
1954
1955 compiler->cache_arg = 0;
1956 compiler->cache_argw = 0;
1957
1958 if (op >= SLJIT_ADD && (dst & SLJIT_MEM))
1959 FAIL_IF(emit_op_mem2(compiler, mem_type | LOAD_DATA, DR(TMP_REG1), dst, dstw, dst, dstw));
1960
1961 switch (type & 0xff) {
1962 case SLJIT_EQUAL:
1963 case SLJIT_NOT_EQUAL:
1964 FAIL_IF(push_inst(compiler, SLTIU | SA(EQUAL_FLAG) | TA(dst_ar) | IMM(1), dst_ar));
1965 src_ar = dst_ar;
1966 break;
1967 case SLJIT_MUL_OVERFLOW:
1968 case SLJIT_MUL_NOT_OVERFLOW:
1969 FAIL_IF(push_inst(compiler, SLTIU | SA(OTHER_FLAG) | TA(dst_ar) | IMM(1), dst_ar));
1970 src_ar = dst_ar;
1971 type ^= 0x1; /* Flip type bit for the XORI below. */
1972 break;
1973 case SLJIT_GREATER_F64:
1974 case SLJIT_LESS_EQUAL_F64:
1975 type ^= 0x1; /* Flip type bit for the XORI below. */
1976 case SLJIT_EQUAL_F64:
1977 case SLJIT_NOT_EQUAL_F64:
1978 case SLJIT_LESS_F64:
1979 case SLJIT_GREATER_EQUAL_F64:
1980 case SLJIT_UNORDERED_F64:
1981 case SLJIT_ORDERED_F64:
1982 FAIL_IF(push_inst(compiler, CFC1 | TA(dst_ar) | DA(FCSR_REG), dst_ar));
1983 FAIL_IF(push_inst(compiler, SRL | TA(dst_ar) | DA(dst_ar) | SH_IMM(23), dst_ar));
1984 FAIL_IF(push_inst(compiler, ANDI | SA(dst_ar) | TA(dst_ar) | IMM(1), dst_ar));
1985 src_ar = dst_ar;
1986 break;
1987
1988 default:
1989 src_ar = OTHER_FLAG;
1990 break;
1991 }
1992
1993 if (type & 0x1) {
1994 FAIL_IF(push_inst(compiler, XORI | SA(src_ar) | TA(dst_ar) | IMM(1), dst_ar));
1995 src_ar = dst_ar;
1996 }
1997
1998 if (op < SLJIT_ADD) {
1999 if (dst & SLJIT_MEM)
2000 return emit_op_mem(compiler, mem_type, src_ar, dst, dstw);
2001
2002 if (src_ar != dst_ar)
2003 return push_inst(compiler, ADDU_W | SA(src_ar) | TA(0) | DA(dst_ar), dst_ar);
2004 return SLJIT_SUCCESS;
2005 }
2006
2007 /* OTHER_FLAG cannot be specified as src2 argument at the moment. */
2008 if (DR(TMP_REG2) != src_ar)
2009 FAIL_IF(push_inst(compiler, ADDU_W | SA(src_ar) | TA(0) | D(TMP_REG2), DR(TMP_REG2)));
2010
2011 mem_type |= CUMULATIVE_OP | LOGICAL_OP | IMM_OP | ALT_KEEP_CACHE;
2012
2013 if (dst & SLJIT_MEM)
2014 return emit_op(compiler, saved_op, mem_type, dst, dstw, TMP_REG1, 0, TMP_REG2, 0);
2015 return emit_op(compiler, saved_op, mem_type, dst, dstw, dst, dstw, TMP_REG2, 0);
2016 }
2017
sljit_emit_cmov(struct sljit_compiler * compiler,sljit_s32 type,sljit_s32 dst_reg,sljit_s32 src,sljit_sw srcw)2018 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_cmov(struct sljit_compiler *compiler, sljit_s32 type,
2019 sljit_s32 dst_reg,
2020 sljit_s32 src, sljit_sw srcw)
2021 {
2022 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
2023 sljit_ins ins;
2024 #endif
2025
2026 CHECK_ERROR();
2027 CHECK(check_sljit_emit_cmov(compiler, type, dst_reg, src, srcw));
2028
2029 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
2030
2031 if (SLJIT_UNLIKELY(src & SLJIT_IMM)) {
2032 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
2033 if (dst_reg & SLJIT_I32_OP)
2034 srcw = (sljit_s32)srcw;
2035 #endif
2036 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), srcw));
2037 src = TMP_REG1;
2038 srcw = 0;
2039 }
2040
2041 dst_reg &= ~SLJIT_I32_OP;
2042
2043 switch (type & 0xff) {
2044 case SLJIT_EQUAL:
2045 ins = MOVZ | TA(EQUAL_FLAG);
2046 break;
2047 case SLJIT_NOT_EQUAL:
2048 ins = MOVN | TA(EQUAL_FLAG);
2049 break;
2050 case SLJIT_LESS:
2051 case SLJIT_GREATER:
2052 case SLJIT_SIG_LESS:
2053 case SLJIT_SIG_GREATER:
2054 case SLJIT_OVERFLOW:
2055 case SLJIT_MUL_OVERFLOW:
2056 ins = MOVN | TA(OTHER_FLAG);
2057 break;
2058 case SLJIT_GREATER_EQUAL:
2059 case SLJIT_LESS_EQUAL:
2060 case SLJIT_SIG_GREATER_EQUAL:
2061 case SLJIT_SIG_LESS_EQUAL:
2062 case SLJIT_NOT_OVERFLOW:
2063 case SLJIT_MUL_NOT_OVERFLOW:
2064 ins = MOVZ | TA(OTHER_FLAG);
2065 break;
2066 case SLJIT_EQUAL_F64:
2067 case SLJIT_LESS_F64:
2068 case SLJIT_LESS_EQUAL_F64:
2069 case SLJIT_UNORDERED_F64:
2070 ins = MOVT;
2071 break;
2072 case SLJIT_NOT_EQUAL_F64:
2073 case SLJIT_GREATER_EQUAL_F64:
2074 case SLJIT_GREATER_F64:
2075 case SLJIT_ORDERED_F64:
2076 ins = MOVF;
2077 break;
2078 default:
2079 ins = MOVZ | TA(OTHER_FLAG);
2080 SLJIT_UNREACHABLE();
2081 break;
2082 }
2083
2084 return push_inst(compiler, ins | S(src) | D(dst_reg), DR(dst_reg));
2085
2086 #else
2087 return sljit_emit_cmov_generic(compiler, type, dst_reg, src, srcw);
2088 #endif
2089 }
2090
sljit_emit_const(struct sljit_compiler * compiler,sljit_s32 dst,sljit_sw dstw,sljit_sw init_value)2091 SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw, sljit_sw init_value)
2092 {
2093 struct sljit_const *const_;
2094 sljit_s32 reg;
2095
2096 CHECK_ERROR_PTR();
2097 CHECK_PTR(check_sljit_emit_const(compiler, dst, dstw, init_value));
2098 ADJUST_LOCAL_OFFSET(dst, dstw);
2099
2100 const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const));
2101 PTR_FAIL_IF(!const_);
2102 set_const(const_, compiler);
2103
2104 reg = FAST_IS_REG(dst) ? dst : TMP_REG2;
2105
2106 PTR_FAIL_IF(emit_const(compiler, reg, init_value));
2107
2108 if (dst & SLJIT_MEM)
2109 PTR_FAIL_IF(emit_op(compiler, SLJIT_MOV, WORD_DATA, dst, dstw, TMP_REG1, 0, TMP_REG2, 0));
2110 return const_;
2111 }
2112