1 /*
2 * Stack-less Just-In-Time compiler
3 *
4 * Copyright 2009-2012 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 SLJIT_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_ui 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 12
61 /* And carry flag as well. */
62 #define ULESS_FLAG 13
63 #define UGREATER_FLAG 14
64 #define LESS_FLAG 15
65 #define GREATER_FLAG 31
66 #define OVERFLOW_FLAG 1
67
68 #define TMP_FREG1 (0)
69 #define TMP_FREG2 ((SLJIT_NUMBER_OF_FLOAT_REGISTERS + 1) << 1)
70
71 static SLJIT_CONST sljit_ub reg_map[SLJIT_NUMBER_OF_REGISTERS + 5] = {
72 0, 2, 5, 6, 7, 8, 9, 10, 11, 24, 23, 22, 21, 20, 19, 18, 17, 16, 29, 3, 25, 4
73 };
74
75 /* --------------------------------------------------------------------- */
76 /* Instrucion forms */
77 /* --------------------------------------------------------------------- */
78
79 #define S(s) (reg_map[s] << 21)
80 #define T(t) (reg_map[t] << 16)
81 #define D(d) (reg_map[d] << 11)
82 /* Absolute registers. */
83 #define SA(s) ((s) << 21)
84 #define TA(t) ((t) << 16)
85 #define DA(d) ((d) << 11)
86 #define FT(t) ((t) << 16)
87 #define FS(s) ((s) << 11)
88 #define FD(d) ((d) << 6)
89 #define IMM(imm) ((imm) & 0xffff)
90 #define SH_IMM(imm) ((imm) << 6)
91
92 #define DR(dr) (reg_map[dr])
93 #define HI(opcode) ((opcode) << 26)
94 #define LO(opcode) (opcode)
95 /* S = (16 << 21) D = (17 << 21) */
96 #define FMT_S (16 << 21)
97
98 #define ABS_S (HI(17) | FMT_S | LO(5))
99 #define ADD_S (HI(17) | FMT_S | LO(0))
100 #define ADDIU (HI(9))
101 #define ADDU (HI(0) | LO(33))
102 #define AND (HI(0) | LO(36))
103 #define ANDI (HI(12))
104 #define B (HI(4))
105 #define BAL (HI(1) | (17 << 16))
106 #define BC1F (HI(17) | (8 << 21))
107 #define BC1T (HI(17) | (8 << 21) | (1 << 16))
108 #define BEQ (HI(4))
109 #define BGEZ (HI(1) | (1 << 16))
110 #define BGTZ (HI(7))
111 #define BLEZ (HI(6))
112 #define BLTZ (HI(1) | (0 << 16))
113 #define BNE (HI(5))
114 #define BREAK (HI(0) | LO(13))
115 #define CFC1 (HI(17) | (2 << 21))
116 #define C_UN_S (HI(17) | FMT_S | LO(49))
117 #define C_UEQ_S (HI(17) | FMT_S | LO(51))
118 #define C_ULE_S (HI(17) | FMT_S | LO(55))
119 #define C_ULT_S (HI(17) | FMT_S | LO(53))
120 #define CVT_S_S (HI(17) | FMT_S | LO(32))
121 #define DADDIU (HI(25))
122 #define DADDU (HI(0) | LO(45))
123 #define DDIV (HI(0) | LO(30))
124 #define DDIVU (HI(0) | LO(31))
125 #define DIV (HI(0) | LO(26))
126 #define DIVU (HI(0) | LO(27))
127 #define DIV_S (HI(17) | FMT_S | LO(3))
128 #define DMULT (HI(0) | LO(28))
129 #define DMULTU (HI(0) | LO(29))
130 #define DSLL (HI(0) | LO(56))
131 #define DSLL32 (HI(0) | LO(60))
132 #define DSLLV (HI(0) | LO(20))
133 #define DSRA (HI(0) | LO(59))
134 #define DSRA32 (HI(0) | LO(63))
135 #define DSRAV (HI(0) | LO(23))
136 #define DSRL (HI(0) | LO(58))
137 #define DSRL32 (HI(0) | LO(62))
138 #define DSRLV (HI(0) | LO(22))
139 #define DSUBU (HI(0) | LO(47))
140 #define J (HI(2))
141 #define JAL (HI(3))
142 #define JALR (HI(0) | LO(9))
143 #define JR (HI(0) | LO(8))
144 #define LD (HI(55))
145 #define LUI (HI(15))
146 #define LW (HI(35))
147 #define MFC1 (HI(17))
148 #define MFHI (HI(0) | LO(16))
149 #define MFLO (HI(0) | LO(18))
150 #define MOV_S (HI(17) | FMT_S | LO(6))
151 #define MTC1 (HI(17) | (4 << 21))
152 #define MUL_S (HI(17) | FMT_S | LO(2))
153 #define MULT (HI(0) | LO(24))
154 #define MULTU (HI(0) | LO(25))
155 #define NEG_S (HI(17) | FMT_S | LO(7))
156 #define NOP (HI(0) | LO(0))
157 #define NOR (HI(0) | LO(39))
158 #define OR (HI(0) | LO(37))
159 #define ORI (HI(13))
160 #define SD (HI(63))
161 #define SLT (HI(0) | LO(42))
162 #define SLTI (HI(10))
163 #define SLTIU (HI(11))
164 #define SLTU (HI(0) | LO(43))
165 #define SLL (HI(0) | LO(0))
166 #define SLLV (HI(0) | LO(4))
167 #define SRL (HI(0) | LO(2))
168 #define SRLV (HI(0) | LO(6))
169 #define SRA (HI(0) | LO(3))
170 #define SRAV (HI(0) | LO(7))
171 #define SUB_S (HI(17) | FMT_S | LO(1))
172 #define SUBU (HI(0) | LO(35))
173 #define SW (HI(43))
174 #define TRUNC_W_S (HI(17) | FMT_S | LO(13))
175 #define XOR (HI(0) | LO(38))
176 #define XORI (HI(14))
177
178 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
179 #define CLZ (HI(28) | LO(32))
180 #define DCLZ (HI(28) | LO(36))
181 #define MUL (HI(28) | LO(2))
182 #define SEB (HI(31) | (16 << 6) | LO(32))
183 #define SEH (HI(31) | (24 << 6) | LO(32))
184 #endif
185
186 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
187 #define ADDU_W ADDU
188 #define ADDIU_W ADDIU
189 #define SLL_W SLL
190 #define SUBU_W SUBU
191 #else
192 #define ADDU_W DADDU
193 #define ADDIU_W DADDIU
194 #define SLL_W DSLL
195 #define SUBU_W DSUBU
196 #endif
197
198 #define SIMM_MAX (0x7fff)
199 #define SIMM_MIN (-0x8000)
200 #define UIMM_MAX (0xffff)
201
202 /* dest_reg is the absolute name of the register
203 Useful for reordering instructions in the delay slot. */
push_inst(struct sljit_compiler * compiler,sljit_ins ins,sljit_si delay_slot)204 static sljit_si push_inst(struct sljit_compiler *compiler, sljit_ins ins, sljit_si delay_slot)
205 {
206 SLJIT_ASSERT(delay_slot == MOVABLE_INS || delay_slot >= UNMOVABLE_INS
207 || delay_slot == ((ins >> 11) & 0x1f) || delay_slot == ((ins >> 16) & 0x1f));
208 sljit_ins *ptr = (sljit_ins*)ensure_buf(compiler, sizeof(sljit_ins));
209 FAIL_IF(!ptr);
210 *ptr = ins;
211 compiler->size++;
212 compiler->delay_slot = delay_slot;
213 return SLJIT_SUCCESS;
214 }
215
invert_branch(sljit_si flags)216 static SLJIT_INLINE sljit_ins invert_branch(sljit_si flags)
217 {
218 return (flags & IS_BIT26_COND) ? (1 << 26) : (1 << 16);
219 }
220
detect_jump_type(struct sljit_jump * jump,sljit_ins * code_ptr,sljit_ins * code)221 static SLJIT_INLINE sljit_ins* detect_jump_type(struct sljit_jump *jump, sljit_ins *code_ptr, sljit_ins *code)
222 {
223 sljit_sw diff;
224 sljit_uw target_addr;
225 sljit_ins *inst;
226 sljit_ins saved_inst;
227
228 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
229 if (jump->flags & (SLJIT_REWRITABLE_JUMP | IS_CALL))
230 return code_ptr;
231 #else
232 if (jump->flags & SLJIT_REWRITABLE_JUMP)
233 return code_ptr;
234 #endif
235
236 if (jump->flags & JUMP_ADDR)
237 target_addr = jump->u.target;
238 else {
239 SLJIT_ASSERT(jump->flags & JUMP_LABEL);
240 target_addr = (sljit_uw)(code + jump->u.label->size);
241 }
242 inst = (sljit_ins*)jump->addr;
243 if (jump->flags & IS_COND)
244 inst--;
245
246 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
247 if (jump->flags & IS_CALL)
248 goto keep_address;
249 #endif
250
251 /* B instructions. */
252 if (jump->flags & IS_MOVABLE) {
253 diff = ((sljit_sw)target_addr - (sljit_sw)(inst)) >> 2;
254 if (diff <= SIMM_MAX && diff >= SIMM_MIN) {
255 jump->flags |= PATCH_B;
256
257 if (!(jump->flags & IS_COND)) {
258 inst[0] = inst[-1];
259 inst[-1] = (jump->flags & IS_JAL) ? BAL : B;
260 jump->addr -= sizeof(sljit_ins);
261 return inst;
262 }
263 saved_inst = inst[0];
264 inst[0] = inst[-1];
265 inst[-1] = saved_inst ^ invert_branch(jump->flags);
266 jump->addr -= 2 * sizeof(sljit_ins);
267 return inst;
268 }
269 }
270 else {
271 diff = ((sljit_sw)target_addr - (sljit_sw)(inst + 1)) >> 2;
272 if (diff <= SIMM_MAX && diff >= SIMM_MIN) {
273 jump->flags |= PATCH_B;
274
275 if (!(jump->flags & IS_COND)) {
276 inst[0] = (jump->flags & IS_JAL) ? BAL : B;
277 inst[1] = NOP;
278 return inst + 1;
279 }
280 inst[0] = inst[0] ^ invert_branch(jump->flags);
281 inst[1] = NOP;
282 jump->addr -= sizeof(sljit_ins);
283 return inst + 1;
284 }
285 }
286
287 if (jump->flags & IS_COND) {
288 if ((jump->flags & IS_MOVABLE) && (target_addr & ~0xfffffff) == ((jump->addr + 2 * sizeof(sljit_ins)) & ~0xfffffff)) {
289 jump->flags |= PATCH_J;
290 saved_inst = inst[0];
291 inst[0] = inst[-1];
292 inst[-1] = (saved_inst & 0xffff0000) | 3;
293 inst[1] = J;
294 inst[2] = NOP;
295 return inst + 2;
296 }
297 else if ((target_addr & ~0xfffffff) == ((jump->addr + 3 * sizeof(sljit_ins)) & ~0xfffffff)) {
298 jump->flags |= PATCH_J;
299 inst[0] = (inst[0] & 0xffff0000) | 3;
300 inst[1] = NOP;
301 inst[2] = J;
302 inst[3] = NOP;
303 jump->addr += sizeof(sljit_ins);
304 return inst + 3;
305 }
306 }
307 else {
308 /* J instuctions. */
309 if ((jump->flags & IS_MOVABLE) && (target_addr & ~0xfffffff) == (jump->addr & ~0xfffffff)) {
310 jump->flags |= PATCH_J;
311 inst[0] = inst[-1];
312 inst[-1] = (jump->flags & IS_JAL) ? JAL : J;
313 jump->addr -= sizeof(sljit_ins);
314 return inst;
315 }
316
317 if ((target_addr & ~0xfffffff) == ((jump->addr + sizeof(sljit_ins)) & ~0xfffffff)) {
318 jump->flags |= PATCH_J;
319 inst[0] = (jump->flags & IS_JAL) ? JAL : J;
320 inst[1] = NOP;
321 return inst + 1;
322 }
323 }
324
325 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
326 keep_address:
327 if (target_addr <= 0x7fffffff) {
328 jump->flags |= PATCH_ABS32;
329 if (jump->flags & IS_COND) {
330 inst[0] -= 4;
331 inst++;
332 }
333 inst[2] = inst[6];
334 inst[3] = inst[7];
335 return inst + 3;
336 }
337 if (target_addr <= 0x7fffffffffffl) {
338 jump->flags |= PATCH_ABS48;
339 if (jump->flags & IS_COND) {
340 inst[0] -= 2;
341 inst++;
342 }
343 inst[4] = inst[6];
344 inst[5] = inst[7];
345 return inst + 5;
346 }
347 #endif
348
349 return code_ptr;
350 }
351
352 #ifdef __GNUC__
sljit_cache_flush(void * code,void * code_ptr)353 static __attribute__ ((noinline)) void sljit_cache_flush(void* code, void* code_ptr)
354 {
355 SLJIT_CACHE_FLUSH(code, code_ptr);
356 }
357 #endif
358
sljit_generate_code(struct sljit_compiler * compiler)359 SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler)
360 {
361 struct sljit_memory_fragment *buf;
362 sljit_ins *code;
363 sljit_ins *code_ptr;
364 sljit_ins *buf_ptr;
365 sljit_ins *buf_end;
366 sljit_uw word_count;
367 sljit_uw addr;
368
369 struct sljit_label *label;
370 struct sljit_jump *jump;
371 struct sljit_const *const_;
372
373 CHECK_ERROR_PTR();
374 CHECK_PTR(check_sljit_generate_code(compiler));
375 reverse_buf(compiler);
376
377 code = (sljit_ins*)SLJIT_MALLOC_EXEC(compiler->size * sizeof(sljit_ins));
378 PTR_FAIL_WITH_EXEC_IF(code);
379 buf = compiler->buf;
380
381 code_ptr = code;
382 word_count = 0;
383 label = compiler->labels;
384 jump = compiler->jumps;
385 const_ = compiler->consts;
386 do {
387 buf_ptr = (sljit_ins*)buf->memory;
388 buf_end = buf_ptr + (buf->used_size >> 2);
389 do {
390 *code_ptr = *buf_ptr++;
391 SLJIT_ASSERT(!label || label->size >= word_count);
392 SLJIT_ASSERT(!jump || jump->addr >= word_count);
393 SLJIT_ASSERT(!const_ || const_->addr >= word_count);
394 /* These structures are ordered by their address. */
395 if (label && label->size == word_count) {
396 /* Just recording the address. */
397 label->addr = (sljit_uw)code_ptr;
398 label->size = code_ptr - code;
399 label = label->next;
400 }
401 if (jump && jump->addr == word_count) {
402 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
403 jump->addr = (sljit_uw)(code_ptr - 3);
404 #else
405 jump->addr = (sljit_uw)(code_ptr - 7);
406 #endif
407 code_ptr = detect_jump_type(jump, code_ptr, code);
408 jump = jump->next;
409 }
410 if (const_ && const_->addr == word_count) {
411 /* Just recording the address. */
412 const_->addr = (sljit_uw)code_ptr;
413 const_ = const_->next;
414 }
415 code_ptr ++;
416 word_count ++;
417 } while (buf_ptr < buf_end);
418
419 buf = buf->next;
420 } while (buf);
421
422 if (label && label->size == word_count) {
423 label->addr = (sljit_uw)code_ptr;
424 label->size = code_ptr - code;
425 label = label->next;
426 }
427
428 SLJIT_ASSERT(!label);
429 SLJIT_ASSERT(!jump);
430 SLJIT_ASSERT(!const_);
431 SLJIT_ASSERT(code_ptr - code <= (sljit_sw)compiler->size);
432
433 jump = compiler->jumps;
434 while (jump) {
435 do {
436 addr = (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target;
437 buf_ptr = (sljit_ins*)jump->addr;
438
439 if (jump->flags & PATCH_B) {
440 addr = (sljit_sw)(addr - (jump->addr + sizeof(sljit_ins))) >> 2;
441 SLJIT_ASSERT((sljit_sw)addr <= SIMM_MAX && (sljit_sw)addr >= SIMM_MIN);
442 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | (addr & 0xffff);
443 break;
444 }
445 if (jump->flags & PATCH_J) {
446 SLJIT_ASSERT((addr & ~0xfffffff) == ((jump->addr + sizeof(sljit_ins)) & ~0xfffffff));
447 buf_ptr[0] |= (addr >> 2) & 0x03ffffff;
448 break;
449 }
450
451 /* Set the fields of immediate loads. */
452 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
453 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | ((addr >> 16) & 0xffff);
454 buf_ptr[1] = (buf_ptr[1] & 0xffff0000) | (addr & 0xffff);
455 #else
456 if (jump->flags & PATCH_ABS32) {
457 SLJIT_ASSERT(addr <= 0x7fffffff);
458 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | ((addr >> 16) & 0xffff);
459 buf_ptr[1] = (buf_ptr[1] & 0xffff0000) | (addr & 0xffff);
460 }
461 else if (jump->flags & PATCH_ABS48) {
462 SLJIT_ASSERT(addr <= 0x7fffffffffffl);
463 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | ((addr >> 32) & 0xffff);
464 buf_ptr[1] = (buf_ptr[1] & 0xffff0000) | ((addr >> 16) & 0xffff);
465 buf_ptr[3] = (buf_ptr[3] & 0xffff0000) | (addr & 0xffff);
466 }
467 else {
468 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | ((addr >> 48) & 0xffff);
469 buf_ptr[1] = (buf_ptr[1] & 0xffff0000) | ((addr >> 32) & 0xffff);
470 buf_ptr[3] = (buf_ptr[3] & 0xffff0000) | ((addr >> 16) & 0xffff);
471 buf_ptr[5] = (buf_ptr[5] & 0xffff0000) | (addr & 0xffff);
472 }
473 #endif
474 } while (0);
475 jump = jump->next;
476 }
477
478 compiler->error = SLJIT_ERR_COMPILED;
479 compiler->executable_size = (code_ptr - code) * sizeof(sljit_ins);
480 #ifndef __GNUC__
481 SLJIT_CACHE_FLUSH(code, code_ptr);
482 #else
483 /* GCC workaround for invalid code generation with -O2. */
484 sljit_cache_flush(code, code_ptr);
485 #endif
486 return code;
487 }
488
489 /* --------------------------------------------------------------------- */
490 /* Entry, exit */
491 /* --------------------------------------------------------------------- */
492
493 /* Creates an index in data_transfer_insts array. */
494 #define LOAD_DATA 0x01
495 #define WORD_DATA 0x00
496 #define BYTE_DATA 0x02
497 #define HALF_DATA 0x04
498 #define INT_DATA 0x06
499 #define SIGNED_DATA 0x08
500 /* Separates integer and floating point registers */
501 #define GPR_REG 0x0f
502 #define DOUBLE_DATA 0x10
503 #define SINGLE_DATA 0x12
504
505 #define MEM_MASK 0x1f
506
507 #define WRITE_BACK 0x00020
508 #define ARG_TEST 0x00040
509 #define ALT_KEEP_CACHE 0x00080
510 #define CUMULATIVE_OP 0x00100
511 #define LOGICAL_OP 0x00200
512 #define IMM_OP 0x00400
513 #define SRC2_IMM 0x00800
514
515 #define UNUSED_DEST 0x01000
516 #define REG_DEST 0x02000
517 #define REG1_SOURCE 0x04000
518 #define REG2_SOURCE 0x08000
519 #define SLOW_SRC1 0x10000
520 #define SLOW_SRC2 0x20000
521 #define SLOW_DEST 0x40000
522
523 /* Only these flags are set. UNUSED_DEST is not set when no flags should be set. */
524 #define CHECK_FLAGS(list) \
525 (!(flags & UNUSED_DEST) || (op & GET_FLAGS(~(list))))
526
527 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
528 #define STACK_STORE SW
529 #define STACK_LOAD LW
530 #else
531 #define STACK_STORE SD
532 #define STACK_LOAD LD
533 #endif
534
535 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
536 #include "sljitNativeMIPS_32.c"
537 #else
538 #include "sljitNativeMIPS_64.c"
539 #endif
540
sljit_emit_enter(struct sljit_compiler * compiler,sljit_si options,sljit_si args,sljit_si scratches,sljit_si saveds,sljit_si fscratches,sljit_si fsaveds,sljit_si local_size)541 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_enter(struct sljit_compiler *compiler,
542 sljit_si options, sljit_si args, sljit_si scratches, sljit_si saveds,
543 sljit_si fscratches, sljit_si fsaveds, sljit_si local_size)
544 {
545 sljit_ins base;
546 sljit_si i, tmp, offs;
547
548 CHECK_ERROR();
549 CHECK(check_sljit_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size));
550 set_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size);
551
552 local_size += GET_SAVED_REGISTERS_SIZE(scratches, saveds, 1) + SLJIT_LOCALS_OFFSET;
553 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
554 local_size = (local_size + 15) & ~0xf;
555 #else
556 local_size = (local_size + 31) & ~0x1f;
557 #endif
558 compiler->local_size = local_size;
559
560 if (local_size <= SIMM_MAX) {
561 /* Frequent case. */
562 FAIL_IF(push_inst(compiler, ADDIU_W | S(SLJIT_SP) | T(SLJIT_SP) | IMM(-local_size), DR(SLJIT_SP)));
563 base = S(SLJIT_SP);
564 }
565 else {
566 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), local_size));
567 FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_SP) | TA(0) | D(TMP_REG2), DR(TMP_REG2)));
568 FAIL_IF(push_inst(compiler, SUBU_W | S(SLJIT_SP) | T(TMP_REG1) | D(SLJIT_SP), DR(SLJIT_SP)));
569 base = S(TMP_REG2);
570 local_size = 0;
571 }
572
573 offs = local_size - (sljit_sw)(sizeof(sljit_sw));
574 FAIL_IF(push_inst(compiler, STACK_STORE | base | TA(RETURN_ADDR_REG) | IMM(offs), MOVABLE_INS));
575
576 tmp = saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - saveds) : SLJIT_FIRST_SAVED_REG;
577 for (i = SLJIT_S0; i >= tmp; i--) {
578 offs -= (sljit_si)(sizeof(sljit_sw));
579 FAIL_IF(push_inst(compiler, STACK_STORE | base | T(i) | IMM(offs), MOVABLE_INS));
580 }
581
582 for (i = scratches; i >= SLJIT_FIRST_SAVED_REG; i--) {
583 offs -= (sljit_si)(sizeof(sljit_sw));
584 FAIL_IF(push_inst(compiler, STACK_STORE | base | T(i) | IMM(offs), MOVABLE_INS));
585 }
586
587 if (args >= 1)
588 FAIL_IF(push_inst(compiler, ADDU_W | SA(4) | TA(0) | D(SLJIT_S0), DR(SLJIT_S0)));
589 if (args >= 2)
590 FAIL_IF(push_inst(compiler, ADDU_W | SA(5) | TA(0) | D(SLJIT_S1), DR(SLJIT_S1)));
591 if (args >= 3)
592 FAIL_IF(push_inst(compiler, ADDU_W | SA(6) | TA(0) | D(SLJIT_S2), DR(SLJIT_S2)));
593
594 return SLJIT_SUCCESS;
595 }
596
sljit_set_context(struct sljit_compiler * compiler,sljit_si options,sljit_si args,sljit_si scratches,sljit_si saveds,sljit_si fscratches,sljit_si fsaveds,sljit_si local_size)597 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_set_context(struct sljit_compiler *compiler,
598 sljit_si options, sljit_si args, sljit_si scratches, sljit_si saveds,
599 sljit_si fscratches, sljit_si fsaveds, sljit_si local_size)
600 {
601 CHECK_ERROR();
602 CHECK(check_sljit_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size));
603 set_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size);
604
605 local_size += GET_SAVED_REGISTERS_SIZE(scratches, saveds, 1) + SLJIT_LOCALS_OFFSET;
606 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
607 compiler->local_size = (local_size + 15) & ~0xf;
608 #else
609 compiler->local_size = (local_size + 31) & ~0x1f;
610 #endif
611 return SLJIT_SUCCESS;
612 }
613
sljit_emit_return(struct sljit_compiler * compiler,sljit_si op,sljit_si src,sljit_sw srcw)614 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_return(struct sljit_compiler *compiler, sljit_si op, sljit_si src, sljit_sw srcw)
615 {
616 sljit_si local_size, i, tmp, offs;
617 sljit_ins base;
618
619 CHECK_ERROR();
620 CHECK(check_sljit_emit_return(compiler, op, src, srcw));
621
622 FAIL_IF(emit_mov_before_return(compiler, op, src, srcw));
623
624 local_size = compiler->local_size;
625 if (local_size <= SIMM_MAX)
626 base = S(SLJIT_SP);
627 else {
628 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), local_size));
629 FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_SP) | T(TMP_REG1) | D(TMP_REG1), DR(TMP_REG1)));
630 base = S(TMP_REG1);
631 local_size = 0;
632 }
633
634 FAIL_IF(push_inst(compiler, STACK_LOAD | base | TA(RETURN_ADDR_REG) | IMM(local_size - (sljit_si)sizeof(sljit_sw)), RETURN_ADDR_REG));
635 offs = local_size - (sljit_si)GET_SAVED_REGISTERS_SIZE(compiler->scratches, compiler->saveds, 1);
636
637 tmp = compiler->scratches;
638 for (i = SLJIT_FIRST_SAVED_REG; i <= tmp; i++) {
639 FAIL_IF(push_inst(compiler, STACK_LOAD | base | T(i) | IMM(offs), DR(i)));
640 offs += (sljit_si)(sizeof(sljit_sw));
641 }
642
643 tmp = compiler->saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - compiler->saveds) : SLJIT_FIRST_SAVED_REG;
644 for (i = tmp; i <= SLJIT_S0; i++) {
645 FAIL_IF(push_inst(compiler, STACK_LOAD | base | T(i) | IMM(offs), DR(i)));
646 offs += (sljit_si)(sizeof(sljit_sw));
647 }
648
649 SLJIT_ASSERT(offs == local_size - (sljit_sw)(sizeof(sljit_sw)));
650
651 FAIL_IF(push_inst(compiler, JR | SA(RETURN_ADDR_REG), UNMOVABLE_INS));
652 if (compiler->local_size <= SIMM_MAX)
653 return push_inst(compiler, ADDIU_W | S(SLJIT_SP) | T(SLJIT_SP) | IMM(compiler->local_size), UNMOVABLE_INS);
654 else
655 return push_inst(compiler, ADDU_W | S(TMP_REG1) | TA(0) | D(SLJIT_SP), UNMOVABLE_INS);
656 }
657
658 #undef STACK_STORE
659 #undef STACK_LOAD
660
661 /* --------------------------------------------------------------------- */
662 /* Operators */
663 /* --------------------------------------------------------------------- */
664
665 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
666 #define ARCH_32_64(a, b) a
667 #else
668 #define ARCH_32_64(a, b) b
669 #endif
670
671 static SLJIT_CONST sljit_ins data_transfer_insts[16 + 4] = {
672 /* u w s */ ARCH_32_64(HI(43) /* sw */, HI(63) /* sd */),
673 /* u w l */ ARCH_32_64(HI(35) /* lw */, HI(55) /* ld */),
674 /* u b s */ HI(40) /* sb */,
675 /* u b l */ HI(36) /* lbu */,
676 /* u h s */ HI(41) /* sh */,
677 /* u h l */ HI(37) /* lhu */,
678 /* u i s */ HI(43) /* sw */,
679 /* u i l */ ARCH_32_64(HI(35) /* lw */, HI(39) /* lwu */),
680
681 /* s w s */ ARCH_32_64(HI(43) /* sw */, HI(63) /* sd */),
682 /* s w l */ ARCH_32_64(HI(35) /* lw */, HI(55) /* ld */),
683 /* s b s */ HI(40) /* sb */,
684 /* s b l */ HI(32) /* lb */,
685 /* s h s */ HI(41) /* sh */,
686 /* s h l */ HI(33) /* lh */,
687 /* s i s */ HI(43) /* sw */,
688 /* s i l */ HI(35) /* lw */,
689
690 /* d s */ HI(61) /* sdc1 */,
691 /* d l */ HI(53) /* ldc1 */,
692 /* s s */ HI(57) /* swc1 */,
693 /* s l */ HI(49) /* lwc1 */,
694 };
695
696 #undef ARCH_32_64
697
698 /* reg_ar is an absoulute register! */
699
700 /* Can perform an operation using at most 1 instruction. */
getput_arg_fast(struct sljit_compiler * compiler,sljit_si flags,sljit_si reg_ar,sljit_si arg,sljit_sw argw)701 static sljit_si getput_arg_fast(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg_ar, sljit_si arg, sljit_sw argw)
702 {
703 SLJIT_ASSERT(arg & SLJIT_MEM);
704
705 if ((!(flags & WRITE_BACK) || !(arg & REG_MASK)) && !(arg & OFFS_REG_MASK) && argw <= SIMM_MAX && argw >= SIMM_MIN) {
706 /* Works for both absoulte and relative addresses. */
707 if (SLJIT_UNLIKELY(flags & ARG_TEST))
708 return 1;
709 FAIL_IF(push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(arg & REG_MASK)
710 | TA(reg_ar) | IMM(argw), ((flags & MEM_MASK) <= GPR_REG && (flags & LOAD_DATA)) ? reg_ar : MOVABLE_INS));
711 return -1;
712 }
713 return 0;
714 }
715
716 /* See getput_arg below.
717 Note: can_cache is called only for binary operators. Those
718 operators always uses word arguments without write back. */
can_cache(sljit_si arg,sljit_sw argw,sljit_si next_arg,sljit_sw next_argw)719 static sljit_si can_cache(sljit_si arg, sljit_sw argw, sljit_si next_arg, sljit_sw next_argw)
720 {
721 SLJIT_ASSERT((arg & SLJIT_MEM) && (next_arg & SLJIT_MEM));
722
723 /* Simple operation except for updates. */
724 if (arg & OFFS_REG_MASK) {
725 argw &= 0x3;
726 next_argw &= 0x3;
727 if (argw && argw == next_argw && (arg == next_arg || (arg & OFFS_REG_MASK) == (next_arg & OFFS_REG_MASK)))
728 return 1;
729 return 0;
730 }
731
732 if (arg == next_arg) {
733 if (((next_argw - argw) <= SIMM_MAX && (next_argw - argw) >= SIMM_MIN))
734 return 1;
735 return 0;
736 }
737
738 return 0;
739 }
740
741 /* Emit the necessary instructions. See can_cache above. */
getput_arg(struct sljit_compiler * compiler,sljit_si flags,sljit_si reg_ar,sljit_si arg,sljit_sw argw,sljit_si next_arg,sljit_sw next_argw)742 static sljit_si getput_arg(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg_ar, sljit_si arg, sljit_sw argw, sljit_si next_arg, sljit_sw next_argw)
743 {
744 sljit_si tmp_ar, base, delay_slot;
745
746 SLJIT_ASSERT(arg & SLJIT_MEM);
747 if (!(next_arg & SLJIT_MEM)) {
748 next_arg = 0;
749 next_argw = 0;
750 }
751
752 if ((flags & MEM_MASK) <= GPR_REG && (flags & LOAD_DATA)) {
753 tmp_ar = reg_ar;
754 delay_slot = reg_ar;
755 } else {
756 tmp_ar = DR(TMP_REG1);
757 delay_slot = MOVABLE_INS;
758 }
759 base = arg & REG_MASK;
760
761 if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) {
762 argw &= 0x3;
763 if ((flags & WRITE_BACK) && reg_ar == DR(base)) {
764 SLJIT_ASSERT(!(flags & LOAD_DATA) && DR(TMP_REG1) != reg_ar);
765 FAIL_IF(push_inst(compiler, ADDU_W | SA(reg_ar) | TA(0) | D(TMP_REG1), DR(TMP_REG1)));
766 reg_ar = DR(TMP_REG1);
767 }
768
769 /* Using the cache. */
770 if (argw == compiler->cache_argw) {
771 if (!(flags & WRITE_BACK)) {
772 if (arg == compiler->cache_arg)
773 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
774 if ((SLJIT_MEM | (arg & OFFS_REG_MASK)) == compiler->cache_arg) {
775 if (arg == next_arg && argw == (next_argw & 0x3)) {
776 compiler->cache_arg = arg;
777 compiler->cache_argw = argw;
778 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(TMP_REG3), DR(TMP_REG3)));
779 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
780 }
781 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | DA(tmp_ar), tmp_ar));
782 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | SA(tmp_ar) | TA(reg_ar), delay_slot);
783 }
784 }
785 else {
786 if ((SLJIT_MEM | (arg & OFFS_REG_MASK)) == compiler->cache_arg) {
787 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(base), DR(base)));
788 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar), delay_slot);
789 }
790 }
791 }
792
793 if (SLJIT_UNLIKELY(argw)) {
794 compiler->cache_arg = SLJIT_MEM | (arg & OFFS_REG_MASK);
795 compiler->cache_argw = argw;
796 FAIL_IF(push_inst(compiler, SLL_W | T(OFFS_REG(arg)) | D(TMP_REG3) | SH_IMM(argw), DR(TMP_REG3)));
797 }
798
799 if (!(flags & WRITE_BACK)) {
800 if (arg == next_arg && argw == (next_argw & 0x3)) {
801 compiler->cache_arg = arg;
802 compiler->cache_argw = argw;
803 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(!argw ? OFFS_REG(arg) : TMP_REG3) | D(TMP_REG3), DR(TMP_REG3)));
804 tmp_ar = DR(TMP_REG3);
805 }
806 else
807 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(!argw ? OFFS_REG(arg) : TMP_REG3) | DA(tmp_ar), tmp_ar));
808 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | SA(tmp_ar) | TA(reg_ar), delay_slot);
809 }
810 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(!argw ? OFFS_REG(arg) : TMP_REG3) | D(base), DR(base)));
811 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar), delay_slot);
812 }
813
814 if (SLJIT_UNLIKELY(flags & WRITE_BACK) && base) {
815 /* Update only applies if a base register exists. */
816 if (reg_ar == DR(base)) {
817 SLJIT_ASSERT(!(flags & LOAD_DATA) && DR(TMP_REG1) != reg_ar);
818 if (argw <= SIMM_MAX && argw >= SIMM_MIN) {
819 FAIL_IF(push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar) | IMM(argw), MOVABLE_INS));
820 if (argw)
821 return push_inst(compiler, ADDIU_W | S(base) | T(base) | IMM(argw), DR(base));
822 return SLJIT_SUCCESS;
823 }
824 FAIL_IF(push_inst(compiler, ADDU_W | SA(reg_ar) | TA(0) | D(TMP_REG1), DR(TMP_REG1)));
825 reg_ar = DR(TMP_REG1);
826 }
827
828 if (argw <= SIMM_MAX && argw >= SIMM_MIN) {
829 if (argw)
830 FAIL_IF(push_inst(compiler, ADDIU_W | S(base) | T(base) | IMM(argw), DR(base)));
831 }
832 else {
833 if (compiler->cache_arg == SLJIT_MEM && argw - compiler->cache_argw <= SIMM_MAX && argw - compiler->cache_argw >= SIMM_MIN) {
834 if (argw != compiler->cache_argw) {
835 FAIL_IF(push_inst(compiler, ADDIU_W | S(TMP_REG3) | T(TMP_REG3) | IMM(argw - compiler->cache_argw), DR(TMP_REG3)));
836 compiler->cache_argw = argw;
837 }
838 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(base), DR(base)));
839 }
840 else {
841 compiler->cache_arg = SLJIT_MEM;
842 compiler->cache_argw = argw;
843 FAIL_IF(load_immediate(compiler, DR(TMP_REG3), argw));
844 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(base), DR(base)));
845 }
846 }
847 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar), delay_slot);
848 }
849
850 if (compiler->cache_arg == arg && argw - compiler->cache_argw <= SIMM_MAX && argw - compiler->cache_argw >= SIMM_MIN) {
851 if (argw != compiler->cache_argw) {
852 FAIL_IF(push_inst(compiler, ADDIU_W | S(TMP_REG3) | T(TMP_REG3) | IMM(argw - compiler->cache_argw), DR(TMP_REG3)));
853 compiler->cache_argw = argw;
854 }
855 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
856 }
857
858 if (compiler->cache_arg == SLJIT_MEM && 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 }
862 else {
863 compiler->cache_arg = SLJIT_MEM;
864 FAIL_IF(load_immediate(compiler, DR(TMP_REG3), argw));
865 }
866 compiler->cache_argw = argw;
867
868 if (!base)
869 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
870
871 if (arg == next_arg && next_argw - argw <= SIMM_MAX && next_argw - argw >= SIMM_MIN) {
872 compiler->cache_arg = arg;
873 FAIL_IF(push_inst(compiler, ADDU_W | S(TMP_REG3) | T(base) | D(TMP_REG3), DR(TMP_REG3)));
874 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
875 }
876
877 FAIL_IF(push_inst(compiler, ADDU_W | S(TMP_REG3) | T(base) | DA(tmp_ar), tmp_ar));
878 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | SA(tmp_ar) | TA(reg_ar), delay_slot);
879 }
880
emit_op_mem(struct sljit_compiler * compiler,sljit_si flags,sljit_si reg_ar,sljit_si arg,sljit_sw argw)881 static SLJIT_INLINE sljit_si emit_op_mem(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg_ar, sljit_si arg, sljit_sw argw)
882 {
883 if (getput_arg_fast(compiler, flags, reg_ar, arg, argw))
884 return compiler->error;
885 compiler->cache_arg = 0;
886 compiler->cache_argw = 0;
887 return getput_arg(compiler, flags, reg_ar, arg, argw, 0, 0);
888 }
889
emit_op_mem2(struct sljit_compiler * compiler,sljit_si flags,sljit_si reg,sljit_si arg1,sljit_sw arg1w,sljit_si arg2,sljit_sw arg2w)890 static SLJIT_INLINE sljit_si emit_op_mem2(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg, sljit_si arg1, sljit_sw arg1w, sljit_si arg2, sljit_sw arg2w)
891 {
892 if (getput_arg_fast(compiler, flags, reg, arg1, arg1w))
893 return compiler->error;
894 return getput_arg(compiler, flags, reg, arg1, arg1w, arg2, arg2w);
895 }
896
emit_op(struct sljit_compiler * compiler,sljit_si op,sljit_si flags,sljit_si dst,sljit_sw dstw,sljit_si src1,sljit_sw src1w,sljit_si src2,sljit_sw src2w)897 static sljit_si emit_op(struct sljit_compiler *compiler, sljit_si op, sljit_si flags,
898 sljit_si dst, sljit_sw dstw,
899 sljit_si src1, sljit_sw src1w,
900 sljit_si src2, sljit_sw src2w)
901 {
902 /* arg1 goes to TMP_REG1 or src reg
903 arg2 goes to TMP_REG2, imm or src reg
904 TMP_REG3 can be used for caching
905 result goes to TMP_REG2, so put result can use TMP_REG1 and TMP_REG3. */
906 sljit_si dst_r = TMP_REG2;
907 sljit_si src1_r;
908 sljit_sw src2_r = 0;
909 sljit_si sugg_src2_r = TMP_REG2;
910
911 if (!(flags & ALT_KEEP_CACHE)) {
912 compiler->cache_arg = 0;
913 compiler->cache_argw = 0;
914 }
915
916 if (SLJIT_UNLIKELY(dst == SLJIT_UNUSED)) {
917 if (op >= SLJIT_MOV && op <= SLJIT_MOVU_SI && !(src2 & SLJIT_MEM))
918 return SLJIT_SUCCESS;
919 if (GET_FLAGS(op))
920 flags |= UNUSED_DEST;
921 }
922 else if (FAST_IS_REG(dst)) {
923 dst_r = dst;
924 flags |= REG_DEST;
925 if (op >= SLJIT_MOV && op <= SLJIT_MOVU_SI)
926 sugg_src2_r = dst_r;
927 }
928 else if ((dst & SLJIT_MEM) && !getput_arg_fast(compiler, flags | ARG_TEST, DR(TMP_REG1), dst, dstw))
929 flags |= SLOW_DEST;
930
931 if (flags & IMM_OP) {
932 if ((src2 & SLJIT_IMM) && src2w) {
933 if ((!(flags & LOGICAL_OP) && (src2w <= SIMM_MAX && src2w >= SIMM_MIN))
934 || ((flags & LOGICAL_OP) && !(src2w & ~UIMM_MAX))) {
935 flags |= SRC2_IMM;
936 src2_r = src2w;
937 }
938 }
939 if (!(flags & SRC2_IMM) && (flags & CUMULATIVE_OP) && (src1 & SLJIT_IMM) && src1w) {
940 if ((!(flags & LOGICAL_OP) && (src1w <= SIMM_MAX && src1w >= SIMM_MIN))
941 || ((flags & LOGICAL_OP) && !(src1w & ~UIMM_MAX))) {
942 flags |= SRC2_IMM;
943 src2_r = src1w;
944
945 /* And swap arguments. */
946 src1 = src2;
947 src1w = src2w;
948 src2 = SLJIT_IMM;
949 /* src2w = src2_r unneeded. */
950 }
951 }
952 }
953
954 /* Source 1. */
955 if (FAST_IS_REG(src1)) {
956 src1_r = src1;
957 flags |= REG1_SOURCE;
958 }
959 else if (src1 & SLJIT_IMM) {
960 if (src1w) {
961 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), src1w));
962 src1_r = TMP_REG1;
963 }
964 else
965 src1_r = 0;
966 }
967 else {
968 if (getput_arg_fast(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w))
969 FAIL_IF(compiler->error);
970 else
971 flags |= SLOW_SRC1;
972 src1_r = TMP_REG1;
973 }
974
975 /* Source 2. */
976 if (FAST_IS_REG(src2)) {
977 src2_r = src2;
978 flags |= REG2_SOURCE;
979 if (!(flags & REG_DEST) && op >= SLJIT_MOV && op <= SLJIT_MOVU_SI)
980 dst_r = src2_r;
981 }
982 else if (src2 & SLJIT_IMM) {
983 if (!(flags & SRC2_IMM)) {
984 if (src2w) {
985 FAIL_IF(load_immediate(compiler, DR(sugg_src2_r), src2w));
986 src2_r = sugg_src2_r;
987 }
988 else {
989 src2_r = 0;
990 if ((op >= SLJIT_MOV && op <= SLJIT_MOVU_SI) && (dst & SLJIT_MEM))
991 dst_r = 0;
992 }
993 }
994 }
995 else {
996 if (getput_arg_fast(compiler, flags | LOAD_DATA, DR(sugg_src2_r), src2, src2w))
997 FAIL_IF(compiler->error);
998 else
999 flags |= SLOW_SRC2;
1000 src2_r = sugg_src2_r;
1001 }
1002
1003 if ((flags & (SLOW_SRC1 | SLOW_SRC2)) == (SLOW_SRC1 | SLOW_SRC2)) {
1004 SLJIT_ASSERT(src2_r == TMP_REG2);
1005 if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
1006 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG2), src2, src2w, src1, src1w));
1007 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w, dst, dstw));
1008 }
1009 else {
1010 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w, src2, src2w));
1011 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG2), src2, src2w, dst, dstw));
1012 }
1013 }
1014 else if (flags & SLOW_SRC1)
1015 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w, dst, dstw));
1016 else if (flags & SLOW_SRC2)
1017 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(sugg_src2_r), src2, src2w, dst, dstw));
1018
1019 FAIL_IF(emit_single_op(compiler, op, flags, dst_r, src1_r, src2_r));
1020
1021 if (dst & SLJIT_MEM) {
1022 if (!(flags & SLOW_DEST)) {
1023 getput_arg_fast(compiler, flags, DR(dst_r), dst, dstw);
1024 return compiler->error;
1025 }
1026 return getput_arg(compiler, flags, DR(dst_r), dst, dstw, 0, 0);
1027 }
1028
1029 return SLJIT_SUCCESS;
1030 }
1031
sljit_emit_op0(struct sljit_compiler * compiler,sljit_si op)1032 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op0(struct sljit_compiler *compiler, sljit_si op)
1033 {
1034 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1035 sljit_si int_op = op & SLJIT_INT_OP;
1036 #endif
1037
1038 CHECK_ERROR();
1039 CHECK(check_sljit_emit_op0(compiler, op));
1040
1041 op = GET_OPCODE(op);
1042 switch (op) {
1043 case SLJIT_BREAKPOINT:
1044 return push_inst(compiler, BREAK, UNMOVABLE_INS);
1045 case SLJIT_NOP:
1046 return push_inst(compiler, NOP, UNMOVABLE_INS);
1047 case SLJIT_LUMUL:
1048 case SLJIT_LSMUL:
1049 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1050 FAIL_IF(push_inst(compiler, (op == SLJIT_LUMUL ? DMULTU : DMULT) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1051 #else
1052 FAIL_IF(push_inst(compiler, (op == SLJIT_LUMUL ? MULTU : MULT) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1053 #endif
1054 FAIL_IF(push_inst(compiler, MFLO | D(SLJIT_R0), DR(SLJIT_R0)));
1055 return push_inst(compiler, MFHI | D(SLJIT_R1), DR(SLJIT_R1));
1056 case SLJIT_LUDIV:
1057 case SLJIT_LSDIV:
1058 #if !(defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
1059 FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1060 FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1061 #endif
1062
1063 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1064 if (int_op)
1065 FAIL_IF(push_inst(compiler, (op == SLJIT_LUDIV ? DIVU : DIV) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1066 else
1067 FAIL_IF(push_inst(compiler, (op == SLJIT_LUDIV ? DDIVU : DDIV) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1068 #else
1069 FAIL_IF(push_inst(compiler, (op == SLJIT_LUDIV ? DIVU : DIV) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1070 #endif
1071
1072 FAIL_IF(push_inst(compiler, MFLO | D(SLJIT_R0), DR(SLJIT_R0)));
1073 return push_inst(compiler, MFHI | D(SLJIT_R1), DR(SLJIT_R1));
1074 }
1075
1076 return SLJIT_SUCCESS;
1077 }
1078
sljit_emit_op1(struct sljit_compiler * compiler,sljit_si op,sljit_si dst,sljit_sw dstw,sljit_si src,sljit_sw srcw)1079 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op1(struct sljit_compiler *compiler, sljit_si op,
1080 sljit_si dst, sljit_sw dstw,
1081 sljit_si src, sljit_sw srcw)
1082 {
1083 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1084 # define flags 0
1085 #else
1086 sljit_si flags = 0;
1087 #endif
1088
1089 CHECK_ERROR();
1090 CHECK(check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw));
1091 ADJUST_LOCAL_OFFSET(dst, dstw);
1092 ADJUST_LOCAL_OFFSET(src, srcw);
1093
1094 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1095 if ((op & SLJIT_INT_OP) && GET_OPCODE(op) >= SLJIT_NOT) {
1096 flags |= INT_DATA | SIGNED_DATA;
1097 if (src & SLJIT_IMM)
1098 srcw = (sljit_si)srcw;
1099 }
1100 #endif
1101
1102 switch (GET_OPCODE(op)) {
1103 case SLJIT_MOV:
1104 case SLJIT_MOV_P:
1105 return emit_op(compiler, SLJIT_MOV, WORD_DATA, dst, dstw, TMP_REG1, 0, src, srcw);
1106
1107 case SLJIT_MOV_UI:
1108 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1109 return emit_op(compiler, SLJIT_MOV_UI, INT_DATA, dst, dstw, TMP_REG1, 0, src, srcw);
1110 #else
1111 return emit_op(compiler, SLJIT_MOV_UI, INT_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_ui)srcw : srcw);
1112 #endif
1113
1114 case SLJIT_MOV_SI:
1115 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1116 return emit_op(compiler, SLJIT_MOV_SI, INT_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, srcw);
1117 #else
1118 return emit_op(compiler, SLJIT_MOV_SI, INT_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_si)srcw : srcw);
1119 #endif
1120
1121 case SLJIT_MOV_UB:
1122 return emit_op(compiler, SLJIT_MOV_UB, BYTE_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_ub)srcw : srcw);
1123
1124 case SLJIT_MOV_SB:
1125 return emit_op(compiler, SLJIT_MOV_SB, BYTE_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_sb)srcw : srcw);
1126
1127 case SLJIT_MOV_UH:
1128 return emit_op(compiler, SLJIT_MOV_UH, HALF_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_uh)srcw : srcw);
1129
1130 case SLJIT_MOV_SH:
1131 return emit_op(compiler, SLJIT_MOV_SH, HALF_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_sh)srcw : srcw);
1132
1133 case SLJIT_MOVU:
1134 case SLJIT_MOVU_P:
1135 return emit_op(compiler, SLJIT_MOV, WORD_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1136
1137 case SLJIT_MOVU_UI:
1138 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1139 return emit_op(compiler, SLJIT_MOV_UI, INT_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1140 #else
1141 return emit_op(compiler, SLJIT_MOV_UI, INT_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_ui)srcw : srcw);
1142 #endif
1143
1144 case SLJIT_MOVU_SI:
1145 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1146 return emit_op(compiler, SLJIT_MOV_SI, INT_DATA | SIGNED_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1147 #else
1148 return emit_op(compiler, SLJIT_MOV_SI, INT_DATA | SIGNED_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_si)srcw : srcw);
1149 #endif
1150
1151 case SLJIT_MOVU_UB:
1152 return emit_op(compiler, SLJIT_MOV_UB, BYTE_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_ub)srcw : srcw);
1153
1154 case SLJIT_MOVU_SB:
1155 return emit_op(compiler, SLJIT_MOV_SB, BYTE_DATA | SIGNED_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_sb)srcw : srcw);
1156
1157 case SLJIT_MOVU_UH:
1158 return emit_op(compiler, SLJIT_MOV_UH, HALF_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_uh)srcw : srcw);
1159
1160 case SLJIT_MOVU_SH:
1161 return emit_op(compiler, SLJIT_MOV_SH, HALF_DATA | SIGNED_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_sh)srcw : srcw);
1162
1163 case SLJIT_NOT:
1164 return emit_op(compiler, op, flags, dst, dstw, TMP_REG1, 0, src, srcw);
1165
1166 case SLJIT_NEG:
1167 return emit_op(compiler, SLJIT_SUB | GET_ALL_FLAGS(op), flags | IMM_OP, dst, dstw, SLJIT_IMM, 0, src, srcw);
1168
1169 case SLJIT_CLZ:
1170 return emit_op(compiler, op, flags, dst, dstw, TMP_REG1, 0, src, srcw);
1171 }
1172
1173 return SLJIT_SUCCESS;
1174
1175 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1176 # undef flags
1177 #endif
1178 }
1179
sljit_emit_op2(struct sljit_compiler * compiler,sljit_si op,sljit_si dst,sljit_sw dstw,sljit_si src1,sljit_sw src1w,sljit_si src2,sljit_sw src2w)1180 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op2(struct sljit_compiler *compiler, sljit_si op,
1181 sljit_si dst, sljit_sw dstw,
1182 sljit_si src1, sljit_sw src1w,
1183 sljit_si src2, sljit_sw src2w)
1184 {
1185 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1186 # define flags 0
1187 #else
1188 sljit_si flags = 0;
1189 #endif
1190
1191 CHECK_ERROR();
1192 CHECK(check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w));
1193 ADJUST_LOCAL_OFFSET(dst, dstw);
1194 ADJUST_LOCAL_OFFSET(src1, src1w);
1195 ADJUST_LOCAL_OFFSET(src2, src2w);
1196
1197 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1198 if (op & SLJIT_INT_OP) {
1199 flags |= INT_DATA | SIGNED_DATA;
1200 if (src1 & SLJIT_IMM)
1201 src1w = (sljit_si)src1w;
1202 if (src2 & SLJIT_IMM)
1203 src2w = (sljit_si)src2w;
1204 }
1205 #endif
1206
1207 switch (GET_OPCODE(op)) {
1208 case SLJIT_ADD:
1209 case SLJIT_ADDC:
1210 return emit_op(compiler, op, flags | CUMULATIVE_OP | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1211
1212 case SLJIT_SUB:
1213 case SLJIT_SUBC:
1214 return emit_op(compiler, op, flags | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1215
1216 case SLJIT_MUL:
1217 return emit_op(compiler, op, flags | CUMULATIVE_OP, dst, dstw, src1, src1w, src2, src2w);
1218
1219 case SLJIT_AND:
1220 case SLJIT_OR:
1221 case SLJIT_XOR:
1222 return emit_op(compiler, op, flags | CUMULATIVE_OP | LOGICAL_OP | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1223
1224 case SLJIT_SHL:
1225 case SLJIT_LSHR:
1226 case SLJIT_ASHR:
1227 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1228 if (src2 & SLJIT_IMM)
1229 src2w &= 0x1f;
1230 #else
1231 if (src2 & SLJIT_IMM) {
1232 if (op & SLJIT_INT_OP)
1233 src2w &= 0x1f;
1234 else
1235 src2w &= 0x3f;
1236 }
1237 #endif
1238 return emit_op(compiler, op, flags | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1239 }
1240
1241 return SLJIT_SUCCESS;
1242
1243 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1244 # undef flags
1245 #endif
1246 }
1247
sljit_get_register_index(sljit_si reg)1248 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_get_register_index(sljit_si reg)
1249 {
1250 CHECK_REG_INDEX(check_sljit_get_register_index(reg));
1251 return reg_map[reg];
1252 }
1253
sljit_get_float_register_index(sljit_si reg)1254 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_get_float_register_index(sljit_si reg)
1255 {
1256 CHECK_REG_INDEX(check_sljit_get_float_register_index(reg));
1257 return reg << 1;
1258 }
1259
sljit_emit_op_custom(struct sljit_compiler * compiler,void * instruction,sljit_si size)1260 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op_custom(struct sljit_compiler *compiler,
1261 void *instruction, sljit_si size)
1262 {
1263 CHECK_ERROR();
1264 CHECK(check_sljit_emit_op_custom(compiler, instruction, size));
1265
1266 return push_inst(compiler, *(sljit_ins*)instruction, UNMOVABLE_INS);
1267 }
1268
1269 /* --------------------------------------------------------------------- */
1270 /* Floating point operators */
1271 /* --------------------------------------------------------------------- */
1272
sljit_is_fpu_available(void)1273 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_is_fpu_available(void)
1274 {
1275 #ifdef SLJIT_IS_FPU_AVAILABLE
1276 return SLJIT_IS_FPU_AVAILABLE;
1277 #elif defined(__GNUC__)
1278 sljit_sw fir;
1279 asm ("cfc1 %0, $0" : "=r"(fir));
1280 return (fir >> 22) & 0x1;
1281 #else
1282 #error "FIR check is not implemented for this architecture"
1283 #endif
1284 }
1285
1286 #define FLOAT_DATA(op) (DOUBLE_DATA | ((op & SLJIT_SINGLE_OP) >> 7))
1287 #define FMT(op) (((op & SLJIT_SINGLE_OP) ^ SLJIT_SINGLE_OP) << (21 - 8))
1288
sljit_emit_fop1_convw_fromd(struct sljit_compiler * compiler,sljit_si op,sljit_si dst,sljit_sw dstw,sljit_si src,sljit_sw srcw)1289 static SLJIT_INLINE sljit_si sljit_emit_fop1_convw_fromd(struct sljit_compiler *compiler, sljit_si op,
1290 sljit_si dst, sljit_sw dstw,
1291 sljit_si src, sljit_sw srcw)
1292 {
1293 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1294 # define flags 0
1295 #else
1296 sljit_si flags = (GET_OPCODE(op) == SLJIT_CONVW_FROMD) << 21;
1297 #endif
1298
1299 if (src & SLJIT_MEM) {
1300 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src, srcw, dst, dstw));
1301 src = TMP_FREG1;
1302 }
1303 else
1304 src <<= 1;
1305
1306 FAIL_IF(push_inst(compiler, (TRUNC_W_S ^ (flags >> 19)) | FMT(op) | FS(src) | FD(TMP_FREG1), MOVABLE_INS));
1307
1308 if (dst == SLJIT_UNUSED)
1309 return SLJIT_SUCCESS;
1310
1311 if (FAST_IS_REG(dst))
1312 return push_inst(compiler, MFC1 | flags | T(dst) | FS(TMP_FREG1), MOVABLE_INS);
1313
1314 /* Store the integer value from a VFP register. */
1315 return emit_op_mem2(compiler, flags ? DOUBLE_DATA : SINGLE_DATA, TMP_FREG1, dst, dstw, 0, 0);
1316
1317 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1318 # undef is_long
1319 #endif
1320 }
1321
sljit_emit_fop1_convd_fromw(struct sljit_compiler * compiler,sljit_si op,sljit_si dst,sljit_sw dstw,sljit_si src,sljit_sw srcw)1322 static SLJIT_INLINE sljit_si sljit_emit_fop1_convd_fromw(struct sljit_compiler *compiler, sljit_si op,
1323 sljit_si dst, sljit_sw dstw,
1324 sljit_si src, sljit_sw srcw)
1325 {
1326 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1327 # define flags 0
1328 #else
1329 sljit_si flags = (GET_OPCODE(op) == SLJIT_CONVD_FROMW) << 21;
1330 #endif
1331
1332 sljit_si dst_r = FAST_IS_REG(dst) ? (dst << 1) : TMP_FREG1;
1333
1334 if (FAST_IS_REG(src))
1335 FAIL_IF(push_inst(compiler, MTC1 | flags | T(src) | FS(TMP_FREG1), MOVABLE_INS));
1336 else if (src & SLJIT_MEM) {
1337 /* Load the integer value into a VFP register. */
1338 FAIL_IF(emit_op_mem2(compiler, ((flags) ? DOUBLE_DATA : SINGLE_DATA) | LOAD_DATA, TMP_FREG1, src, srcw, dst, dstw));
1339 }
1340 else {
1341 #if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
1342 if (GET_OPCODE(op) == SLJIT_CONVD_FROMI)
1343 srcw = (sljit_si)srcw;
1344 #endif
1345 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), srcw));
1346 FAIL_IF(push_inst(compiler, MTC1 | flags | T(TMP_REG1) | FS(TMP_FREG1), MOVABLE_INS));
1347 }
1348
1349 FAIL_IF(push_inst(compiler, CVT_S_S | flags | (4 << 21) | (((op & SLJIT_SINGLE_OP) ^ SLJIT_SINGLE_OP) >> 8) | FS(TMP_FREG1) | FD(dst_r), MOVABLE_INS));
1350
1351 if (dst & SLJIT_MEM)
1352 return emit_op_mem2(compiler, FLOAT_DATA(op), TMP_FREG1, dst, dstw, 0, 0);
1353 return SLJIT_SUCCESS;
1354
1355 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1356 # undef flags
1357 #endif
1358 }
1359
sljit_emit_fop1_cmp(struct sljit_compiler * compiler,sljit_si op,sljit_si src1,sljit_sw src1w,sljit_si src2,sljit_sw src2w)1360 static SLJIT_INLINE sljit_si sljit_emit_fop1_cmp(struct sljit_compiler *compiler, sljit_si op,
1361 sljit_si src1, sljit_sw src1w,
1362 sljit_si src2, sljit_sw src2w)
1363 {
1364 if (src1 & SLJIT_MEM) {
1365 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w, src2, src2w));
1366 src1 = TMP_FREG1;
1367 }
1368 else
1369 src1 <<= 1;
1370
1371 if (src2 & SLJIT_MEM) {
1372 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w, 0, 0));
1373 src2 = TMP_FREG2;
1374 }
1375 else
1376 src2 <<= 1;
1377
1378 /* src2 and src1 are swapped. */
1379 if (op & SLJIT_SET_E) {
1380 FAIL_IF(push_inst(compiler, C_UEQ_S | FMT(op) | FT(src2) | FS(src1), UNMOVABLE_INS));
1381 FAIL_IF(push_inst(compiler, CFC1 | TA(EQUAL_FLAG) | DA(FCSR_REG), EQUAL_FLAG));
1382 FAIL_IF(push_inst(compiler, SRL | TA(EQUAL_FLAG) | DA(EQUAL_FLAG) | SH_IMM(23), EQUAL_FLAG));
1383 FAIL_IF(push_inst(compiler, ANDI | SA(EQUAL_FLAG) | TA(EQUAL_FLAG) | IMM(1), EQUAL_FLAG));
1384 }
1385 if (op & SLJIT_SET_S) {
1386 /* Mixing the instructions for the two checks. */
1387 FAIL_IF(push_inst(compiler, C_ULT_S | FMT(op) | FT(src2) | FS(src1), UNMOVABLE_INS));
1388 FAIL_IF(push_inst(compiler, CFC1 | TA(ULESS_FLAG) | DA(FCSR_REG), ULESS_FLAG));
1389 FAIL_IF(push_inst(compiler, C_ULT_S | FMT(op) | FT(src1) | FS(src2), UNMOVABLE_INS));
1390 FAIL_IF(push_inst(compiler, SRL | TA(ULESS_FLAG) | DA(ULESS_FLAG) | SH_IMM(23), ULESS_FLAG));
1391 FAIL_IF(push_inst(compiler, ANDI | SA(ULESS_FLAG) | TA(ULESS_FLAG) | IMM(1), ULESS_FLAG));
1392 FAIL_IF(push_inst(compiler, CFC1 | TA(UGREATER_FLAG) | DA(FCSR_REG), UGREATER_FLAG));
1393 FAIL_IF(push_inst(compiler, SRL | TA(UGREATER_FLAG) | DA(UGREATER_FLAG) | SH_IMM(23), UGREATER_FLAG));
1394 FAIL_IF(push_inst(compiler, ANDI | SA(UGREATER_FLAG) | TA(UGREATER_FLAG) | IMM(1), UGREATER_FLAG));
1395 }
1396 return push_inst(compiler, C_UN_S | FMT(op) | FT(src2) | FS(src1), FCSR_FCC);
1397 }
1398
sljit_emit_fop1(struct sljit_compiler * compiler,sljit_si op,sljit_si dst,sljit_sw dstw,sljit_si src,sljit_sw srcw)1399 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fop1(struct sljit_compiler *compiler, sljit_si op,
1400 sljit_si dst, sljit_sw dstw,
1401 sljit_si src, sljit_sw srcw)
1402 {
1403 sljit_si dst_r;
1404
1405 CHECK_ERROR();
1406 compiler->cache_arg = 0;
1407 compiler->cache_argw = 0;
1408
1409 SLJIT_COMPILE_ASSERT((SLJIT_SINGLE_OP == 0x100) && !(DOUBLE_DATA & 0x2), float_transfer_bit_error);
1410 SELECT_FOP1_OPERATION_WITH_CHECKS(compiler, op, dst, dstw, src, srcw);
1411
1412 if (GET_OPCODE(op) == SLJIT_CONVD_FROMS)
1413 op ^= SLJIT_SINGLE_OP;
1414
1415 dst_r = FAST_IS_REG(dst) ? (dst << 1) : TMP_FREG1;
1416
1417 if (src & SLJIT_MEM) {
1418 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op) | LOAD_DATA, dst_r, src, srcw, dst, dstw));
1419 src = dst_r;
1420 }
1421 else
1422 src <<= 1;
1423
1424 switch (GET_OPCODE(op)) {
1425 case SLJIT_DMOV:
1426 if (src != dst_r) {
1427 if (dst_r != TMP_FREG1)
1428 FAIL_IF(push_inst(compiler, MOV_S | FMT(op) | FS(src) | FD(dst_r), MOVABLE_INS));
1429 else
1430 dst_r = src;
1431 }
1432 break;
1433 case SLJIT_DNEG:
1434 FAIL_IF(push_inst(compiler, NEG_S | FMT(op) | FS(src) | FD(dst_r), MOVABLE_INS));
1435 break;
1436 case SLJIT_DABS:
1437 FAIL_IF(push_inst(compiler, ABS_S | FMT(op) | FS(src) | FD(dst_r), MOVABLE_INS));
1438 break;
1439 case SLJIT_CONVD_FROMS:
1440 FAIL_IF(push_inst(compiler, CVT_S_S | ((op & SLJIT_SINGLE_OP) ? 1 : (1 << 21)) | FS(src) | FD(dst_r), MOVABLE_INS));
1441 op ^= SLJIT_SINGLE_OP;
1442 break;
1443 }
1444
1445 if (dst & SLJIT_MEM)
1446 return emit_op_mem2(compiler, FLOAT_DATA(op), dst_r, dst, dstw, 0, 0);
1447 return SLJIT_SUCCESS;
1448 }
1449
sljit_emit_fop2(struct sljit_compiler * compiler,sljit_si op,sljit_si dst,sljit_sw dstw,sljit_si src1,sljit_sw src1w,sljit_si src2,sljit_sw src2w)1450 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fop2(struct sljit_compiler *compiler, sljit_si op,
1451 sljit_si dst, sljit_sw dstw,
1452 sljit_si src1, sljit_sw src1w,
1453 sljit_si src2, sljit_sw src2w)
1454 {
1455 sljit_si dst_r, flags = 0;
1456
1457 CHECK_ERROR();
1458 CHECK(check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w));
1459 ADJUST_LOCAL_OFFSET(dst, dstw);
1460 ADJUST_LOCAL_OFFSET(src1, src1w);
1461 ADJUST_LOCAL_OFFSET(src2, src2w);
1462
1463 compiler->cache_arg = 0;
1464 compiler->cache_argw = 0;
1465
1466 dst_r = FAST_IS_REG(dst) ? (dst << 1) : TMP_FREG2;
1467
1468 if (src1 & SLJIT_MEM) {
1469 if (getput_arg_fast(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w)) {
1470 FAIL_IF(compiler->error);
1471 src1 = TMP_FREG1;
1472 } else
1473 flags |= SLOW_SRC1;
1474 }
1475 else
1476 src1 <<= 1;
1477
1478 if (src2 & SLJIT_MEM) {
1479 if (getput_arg_fast(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w)) {
1480 FAIL_IF(compiler->error);
1481 src2 = TMP_FREG2;
1482 } else
1483 flags |= SLOW_SRC2;
1484 }
1485 else
1486 src2 <<= 1;
1487
1488 if ((flags & (SLOW_SRC1 | SLOW_SRC2)) == (SLOW_SRC1 | SLOW_SRC2)) {
1489 if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
1490 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w, src1, src1w));
1491 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w, dst, dstw));
1492 }
1493 else {
1494 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w, src2, src2w));
1495 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w, dst, dstw));
1496 }
1497 }
1498 else if (flags & SLOW_SRC1)
1499 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w, dst, dstw));
1500 else if (flags & SLOW_SRC2)
1501 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w, dst, dstw));
1502
1503 if (flags & SLOW_SRC1)
1504 src1 = TMP_FREG1;
1505 if (flags & SLOW_SRC2)
1506 src2 = TMP_FREG2;
1507
1508 switch (GET_OPCODE(op)) {
1509 case SLJIT_DADD:
1510 FAIL_IF(push_inst(compiler, ADD_S | FMT(op) | FT(src2) | FS(src1) | FD(dst_r), MOVABLE_INS));
1511 break;
1512
1513 case SLJIT_DSUB:
1514 FAIL_IF(push_inst(compiler, SUB_S | FMT(op) | FT(src2) | FS(src1) | FD(dst_r), MOVABLE_INS));
1515 break;
1516
1517 case SLJIT_DMUL:
1518 FAIL_IF(push_inst(compiler, MUL_S | FMT(op) | FT(src2) | FS(src1) | FD(dst_r), MOVABLE_INS));
1519 break;
1520
1521 case SLJIT_DDIV:
1522 FAIL_IF(push_inst(compiler, DIV_S | FMT(op) | FT(src2) | FS(src1) | FD(dst_r), MOVABLE_INS));
1523 break;
1524 }
1525
1526 if (dst_r == TMP_FREG2)
1527 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op), TMP_FREG2, dst, dstw, 0, 0));
1528
1529 return SLJIT_SUCCESS;
1530 }
1531
1532 /* --------------------------------------------------------------------- */
1533 /* Other instructions */
1534 /* --------------------------------------------------------------------- */
1535
sljit_emit_fast_enter(struct sljit_compiler * compiler,sljit_si dst,sljit_sw dstw)1536 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_si dst, sljit_sw dstw)
1537 {
1538 CHECK_ERROR();
1539 CHECK(check_sljit_emit_fast_enter(compiler, dst, dstw));
1540 ADJUST_LOCAL_OFFSET(dst, dstw);
1541
1542 /* For UNUSED dst. Uncommon, but possible. */
1543 if (dst == SLJIT_UNUSED)
1544 return SLJIT_SUCCESS;
1545
1546 if (FAST_IS_REG(dst))
1547 return push_inst(compiler, ADDU_W | SA(RETURN_ADDR_REG) | TA(0) | D(dst), DR(dst));
1548
1549 /* Memory. */
1550 return emit_op_mem(compiler, WORD_DATA, RETURN_ADDR_REG, dst, dstw);
1551 }
1552
sljit_emit_fast_return(struct sljit_compiler * compiler,sljit_si src,sljit_sw srcw)1553 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fast_return(struct sljit_compiler *compiler, sljit_si src, sljit_sw srcw)
1554 {
1555 CHECK_ERROR();
1556 CHECK(check_sljit_emit_fast_return(compiler, src, srcw));
1557 ADJUST_LOCAL_OFFSET(src, srcw);
1558
1559 if (FAST_IS_REG(src))
1560 FAIL_IF(push_inst(compiler, ADDU_W | S(src) | TA(0) | DA(RETURN_ADDR_REG), RETURN_ADDR_REG));
1561 else if (src & SLJIT_MEM)
1562 FAIL_IF(emit_op_mem(compiler, WORD_DATA | LOAD_DATA, RETURN_ADDR_REG, src, srcw));
1563 else if (src & SLJIT_IMM)
1564 FAIL_IF(load_immediate(compiler, RETURN_ADDR_REG, srcw));
1565
1566 FAIL_IF(push_inst(compiler, JR | SA(RETURN_ADDR_REG), UNMOVABLE_INS));
1567 return push_inst(compiler, NOP, UNMOVABLE_INS);
1568 }
1569
1570 /* --------------------------------------------------------------------- */
1571 /* Conditional instructions */
1572 /* --------------------------------------------------------------------- */
1573
sljit_emit_label(struct sljit_compiler * compiler)1574 SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler)
1575 {
1576 struct sljit_label *label;
1577
1578 CHECK_ERROR_PTR();
1579 CHECK_PTR(check_sljit_emit_label(compiler));
1580
1581 if (compiler->last_label && compiler->last_label->size == compiler->size)
1582 return compiler->last_label;
1583
1584 label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label));
1585 PTR_FAIL_IF(!label);
1586 set_label(label, compiler);
1587 compiler->delay_slot = UNMOVABLE_INS;
1588 return label;
1589 }
1590
1591 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1592 #define JUMP_LENGTH 4
1593 #else
1594 #define JUMP_LENGTH 8
1595 #endif
1596
1597 #define BR_Z(src) \
1598 inst = BEQ | SA(src) | TA(0) | JUMP_LENGTH; \
1599 flags = IS_BIT26_COND; \
1600 delay_check = src;
1601
1602 #define BR_NZ(src) \
1603 inst = BNE | SA(src) | TA(0) | JUMP_LENGTH; \
1604 flags = IS_BIT26_COND; \
1605 delay_check = src;
1606
1607 #define BR_T() \
1608 inst = BC1T | JUMP_LENGTH; \
1609 flags = IS_BIT16_COND; \
1610 delay_check = FCSR_FCC;
1611
1612 #define BR_F() \
1613 inst = BC1F | JUMP_LENGTH; \
1614 flags = IS_BIT16_COND; \
1615 delay_check = FCSR_FCC;
1616
sljit_emit_jump(struct sljit_compiler * compiler,sljit_si type)1617 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, sljit_si type)
1618 {
1619 struct sljit_jump *jump;
1620 sljit_ins inst;
1621 sljit_si flags = 0;
1622 sljit_si delay_check = UNMOVABLE_INS;
1623
1624 CHECK_ERROR_PTR();
1625 CHECK_PTR(check_sljit_emit_jump(compiler, type));
1626
1627 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1628 PTR_FAIL_IF(!jump);
1629 set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1630 type &= 0xff;
1631
1632 switch (type) {
1633 case SLJIT_EQUAL:
1634 case SLJIT_D_NOT_EQUAL:
1635 BR_NZ(EQUAL_FLAG);
1636 break;
1637 case SLJIT_NOT_EQUAL:
1638 case SLJIT_D_EQUAL:
1639 BR_Z(EQUAL_FLAG);
1640 break;
1641 case SLJIT_LESS:
1642 case SLJIT_D_LESS:
1643 BR_Z(ULESS_FLAG);
1644 break;
1645 case SLJIT_GREATER_EQUAL:
1646 case SLJIT_D_GREATER_EQUAL:
1647 BR_NZ(ULESS_FLAG);
1648 break;
1649 case SLJIT_GREATER:
1650 case SLJIT_D_GREATER:
1651 BR_Z(UGREATER_FLAG);
1652 break;
1653 case SLJIT_LESS_EQUAL:
1654 case SLJIT_D_LESS_EQUAL:
1655 BR_NZ(UGREATER_FLAG);
1656 break;
1657 case SLJIT_SIG_LESS:
1658 BR_Z(LESS_FLAG);
1659 break;
1660 case SLJIT_SIG_GREATER_EQUAL:
1661 BR_NZ(LESS_FLAG);
1662 break;
1663 case SLJIT_SIG_GREATER:
1664 BR_Z(GREATER_FLAG);
1665 break;
1666 case SLJIT_SIG_LESS_EQUAL:
1667 BR_NZ(GREATER_FLAG);
1668 break;
1669 case SLJIT_OVERFLOW:
1670 case SLJIT_MUL_OVERFLOW:
1671 BR_Z(OVERFLOW_FLAG);
1672 break;
1673 case SLJIT_NOT_OVERFLOW:
1674 case SLJIT_MUL_NOT_OVERFLOW:
1675 BR_NZ(OVERFLOW_FLAG);
1676 break;
1677 case SLJIT_D_UNORDERED:
1678 BR_F();
1679 break;
1680 case SLJIT_D_ORDERED:
1681 BR_T();
1682 break;
1683 default:
1684 /* Not conditional branch. */
1685 inst = 0;
1686 break;
1687 }
1688
1689 jump->flags |= flags;
1690 if (compiler->delay_slot == MOVABLE_INS || (compiler->delay_slot != UNMOVABLE_INS && compiler->delay_slot != delay_check))
1691 jump->flags |= IS_MOVABLE;
1692
1693 if (inst)
1694 PTR_FAIL_IF(push_inst(compiler, inst, UNMOVABLE_INS));
1695
1696 PTR_FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1697 if (type <= SLJIT_JUMP) {
1698 PTR_FAIL_IF(push_inst(compiler, JR | S(TMP_REG2), UNMOVABLE_INS));
1699 jump->addr = compiler->size;
1700 PTR_FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1701 } else {
1702 SLJIT_ASSERT(DR(PIC_ADDR_REG) == 25 && PIC_ADDR_REG == TMP_REG2);
1703 /* Cannot be optimized out if type is >= CALL0. */
1704 jump->flags |= IS_JAL | (type >= SLJIT_CALL0 ? IS_CALL : 0);
1705 PTR_FAIL_IF(push_inst(compiler, JALR | S(TMP_REG2) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
1706 jump->addr = compiler->size;
1707 /* A NOP if type < CALL1. */
1708 PTR_FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_R0) | TA(0) | DA(4), UNMOVABLE_INS));
1709 }
1710 return jump;
1711 }
1712
1713 #define RESOLVE_IMM1() \
1714 if (src1 & SLJIT_IMM) { \
1715 if (src1w) { \
1716 PTR_FAIL_IF(load_immediate(compiler, DR(TMP_REG1), src1w)); \
1717 src1 = TMP_REG1; \
1718 } \
1719 else \
1720 src1 = 0; \
1721 }
1722
1723 #define RESOLVE_IMM2() \
1724 if (src2 & SLJIT_IMM) { \
1725 if (src2w) { \
1726 PTR_FAIL_IF(load_immediate(compiler, DR(TMP_REG2), src2w)); \
1727 src2 = TMP_REG2; \
1728 } \
1729 else \
1730 src2 = 0; \
1731 }
1732
sljit_emit_cmp(struct sljit_compiler * compiler,sljit_si type,sljit_si src1,sljit_sw src1w,sljit_si src2,sljit_sw src2w)1733 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_cmp(struct sljit_compiler *compiler, sljit_si type,
1734 sljit_si src1, sljit_sw src1w,
1735 sljit_si src2, sljit_sw src2w)
1736 {
1737 struct sljit_jump *jump;
1738 sljit_si flags;
1739 sljit_ins inst;
1740
1741 CHECK_ERROR_PTR();
1742 CHECK_PTR(check_sljit_emit_cmp(compiler, type, src1, src1w, src2, src2w));
1743 ADJUST_LOCAL_OFFSET(src1, src1w);
1744 ADJUST_LOCAL_OFFSET(src2, src2w);
1745
1746 compiler->cache_arg = 0;
1747 compiler->cache_argw = 0;
1748 flags = ((type & SLJIT_INT_OP) ? INT_DATA : WORD_DATA) | LOAD_DATA;
1749 if (src1 & SLJIT_MEM) {
1750 PTR_FAIL_IF(emit_op_mem2(compiler, flags, DR(TMP_REG1), src1, src1w, src2, src2w));
1751 src1 = TMP_REG1;
1752 }
1753 if (src2 & SLJIT_MEM) {
1754 PTR_FAIL_IF(emit_op_mem2(compiler, flags, DR(TMP_REG2), src2, src2w, 0, 0));
1755 src2 = TMP_REG2;
1756 }
1757
1758 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1759 PTR_FAIL_IF(!jump);
1760 set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1761 type &= 0xff;
1762
1763 if (type <= SLJIT_NOT_EQUAL) {
1764 RESOLVE_IMM1();
1765 RESOLVE_IMM2();
1766 jump->flags |= IS_BIT26_COND;
1767 if (compiler->delay_slot == MOVABLE_INS || (compiler->delay_slot != UNMOVABLE_INS && compiler->delay_slot != DR(src1) && compiler->delay_slot != DR(src2)))
1768 jump->flags |= IS_MOVABLE;
1769 PTR_FAIL_IF(push_inst(compiler, (type == SLJIT_EQUAL ? BNE : BEQ) | S(src1) | T(src2) | JUMP_LENGTH, UNMOVABLE_INS));
1770 }
1771 else if (type >= SLJIT_SIG_LESS && (((src1 & SLJIT_IMM) && (src1w == 0)) || ((src2 & SLJIT_IMM) && (src2w == 0)))) {
1772 inst = NOP;
1773 if ((src1 & SLJIT_IMM) && (src1w == 0)) {
1774 RESOLVE_IMM2();
1775 switch (type) {
1776 case SLJIT_SIG_LESS:
1777 inst = BLEZ;
1778 jump->flags |= IS_BIT26_COND;
1779 break;
1780 case SLJIT_SIG_GREATER_EQUAL:
1781 inst = BGTZ;
1782 jump->flags |= IS_BIT26_COND;
1783 break;
1784 case SLJIT_SIG_GREATER:
1785 inst = BGEZ;
1786 jump->flags |= IS_BIT16_COND;
1787 break;
1788 case SLJIT_SIG_LESS_EQUAL:
1789 inst = BLTZ;
1790 jump->flags |= IS_BIT16_COND;
1791 break;
1792 }
1793 src1 = src2;
1794 }
1795 else {
1796 RESOLVE_IMM1();
1797 switch (type) {
1798 case SLJIT_SIG_LESS:
1799 inst = BGEZ;
1800 jump->flags |= IS_BIT16_COND;
1801 break;
1802 case SLJIT_SIG_GREATER_EQUAL:
1803 inst = BLTZ;
1804 jump->flags |= IS_BIT16_COND;
1805 break;
1806 case SLJIT_SIG_GREATER:
1807 inst = BLEZ;
1808 jump->flags |= IS_BIT26_COND;
1809 break;
1810 case SLJIT_SIG_LESS_EQUAL:
1811 inst = BGTZ;
1812 jump->flags |= IS_BIT26_COND;
1813 break;
1814 }
1815 }
1816 PTR_FAIL_IF(push_inst(compiler, inst | S(src1) | JUMP_LENGTH, UNMOVABLE_INS));
1817 }
1818 else {
1819 if (type == SLJIT_LESS || type == SLJIT_GREATER_EQUAL || type == SLJIT_SIG_LESS || type == SLJIT_SIG_GREATER_EQUAL) {
1820 RESOLVE_IMM1();
1821 if ((src2 & SLJIT_IMM) && src2w <= SIMM_MAX && src2w >= SIMM_MIN)
1822 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_LESS_EQUAL ? SLTIU : SLTI) | S(src1) | T(TMP_REG1) | IMM(src2w), DR(TMP_REG1)));
1823 else {
1824 RESOLVE_IMM2();
1825 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_LESS_EQUAL ? SLTU : SLT) | S(src1) | T(src2) | D(TMP_REG1), DR(TMP_REG1)));
1826 }
1827 type = (type == SLJIT_LESS || type == SLJIT_SIG_LESS) ? SLJIT_NOT_EQUAL : SLJIT_EQUAL;
1828 }
1829 else {
1830 RESOLVE_IMM2();
1831 if ((src1 & SLJIT_IMM) && src1w <= SIMM_MAX && src1w >= SIMM_MIN)
1832 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_LESS_EQUAL ? SLTIU : SLTI) | S(src2) | T(TMP_REG1) | IMM(src1w), DR(TMP_REG1)));
1833 else {
1834 RESOLVE_IMM1();
1835 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_LESS_EQUAL ? SLTU : SLT) | S(src2) | T(src1) | D(TMP_REG1), DR(TMP_REG1)));
1836 }
1837 type = (type == SLJIT_GREATER || type == SLJIT_SIG_GREATER) ? SLJIT_NOT_EQUAL : SLJIT_EQUAL;
1838 }
1839
1840 jump->flags |= IS_BIT26_COND;
1841 PTR_FAIL_IF(push_inst(compiler, (type == SLJIT_EQUAL ? BNE : BEQ) | S(TMP_REG1) | TA(0) | JUMP_LENGTH, UNMOVABLE_INS));
1842 }
1843
1844 PTR_FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1845 PTR_FAIL_IF(push_inst(compiler, JR | S(TMP_REG2), UNMOVABLE_INS));
1846 jump->addr = compiler->size;
1847 PTR_FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1848 return jump;
1849 }
1850
1851 #undef RESOLVE_IMM1
1852 #undef RESOLVE_IMM2
1853
sljit_emit_fcmp(struct sljit_compiler * compiler,sljit_si type,sljit_si src1,sljit_sw src1w,sljit_si src2,sljit_sw src2w)1854 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_fcmp(struct sljit_compiler *compiler, sljit_si type,
1855 sljit_si src1, sljit_sw src1w,
1856 sljit_si src2, sljit_sw src2w)
1857 {
1858 struct sljit_jump *jump;
1859 sljit_ins inst;
1860 sljit_si if_true;
1861
1862 CHECK_ERROR_PTR();
1863 CHECK_PTR(check_sljit_emit_fcmp(compiler, type, src1, src1w, src2, src2w));
1864
1865 compiler->cache_arg = 0;
1866 compiler->cache_argw = 0;
1867
1868 if (src1 & SLJIT_MEM) {
1869 PTR_FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(type) | LOAD_DATA, TMP_FREG1, src1, src1w, src2, src2w));
1870 src1 = TMP_FREG1;
1871 }
1872 else
1873 src1 <<= 1;
1874
1875 if (src2 & SLJIT_MEM) {
1876 PTR_FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(type) | LOAD_DATA, TMP_FREG2, src2, src2w, 0, 0));
1877 src2 = TMP_FREG2;
1878 }
1879 else
1880 src2 <<= 1;
1881
1882 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1883 PTR_FAIL_IF(!jump);
1884 set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1885 jump->flags |= IS_BIT16_COND;
1886
1887 switch (type & 0xff) {
1888 case SLJIT_D_EQUAL:
1889 inst = C_UEQ_S;
1890 if_true = 1;
1891 break;
1892 case SLJIT_D_NOT_EQUAL:
1893 inst = C_UEQ_S;
1894 if_true = 0;
1895 break;
1896 case SLJIT_D_LESS:
1897 inst = C_ULT_S;
1898 if_true = 1;
1899 break;
1900 case SLJIT_D_GREATER_EQUAL:
1901 inst = C_ULT_S;
1902 if_true = 0;
1903 break;
1904 case SLJIT_D_GREATER:
1905 inst = C_ULE_S;
1906 if_true = 0;
1907 break;
1908 case SLJIT_D_LESS_EQUAL:
1909 inst = C_ULE_S;
1910 if_true = 1;
1911 break;
1912 case SLJIT_D_UNORDERED:
1913 inst = C_UN_S;
1914 if_true = 1;
1915 break;
1916 default: /* Make compilers happy. */
1917 SLJIT_ASSERT_STOP();
1918 case SLJIT_D_ORDERED:
1919 inst = C_UN_S;
1920 if_true = 0;
1921 break;
1922 }
1923
1924 PTR_FAIL_IF(push_inst(compiler, inst | FMT(type) | FT(src2) | FS(src1), UNMOVABLE_INS));
1925 /* Intentionally the other opcode. */
1926 PTR_FAIL_IF(push_inst(compiler, (if_true ? BC1F : BC1T) | JUMP_LENGTH, UNMOVABLE_INS));
1927 PTR_FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1928 PTR_FAIL_IF(push_inst(compiler, JR | S(TMP_REG2), UNMOVABLE_INS));
1929 jump->addr = compiler->size;
1930 PTR_FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1931 return jump;
1932 }
1933
1934 #undef JUMP_LENGTH
1935 #undef BR_Z
1936 #undef BR_NZ
1937 #undef BR_T
1938 #undef BR_F
1939
1940 #undef FLOAT_DATA
1941 #undef FMT
1942
sljit_emit_ijump(struct sljit_compiler * compiler,sljit_si type,sljit_si src,sljit_sw srcw)1943 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_ijump(struct sljit_compiler *compiler, sljit_si type, sljit_si src, sljit_sw srcw)
1944 {
1945 sljit_si src_r = TMP_REG2;
1946 struct sljit_jump *jump = NULL;
1947
1948 CHECK_ERROR();
1949 CHECK(check_sljit_emit_ijump(compiler, type, src, srcw));
1950 ADJUST_LOCAL_OFFSET(src, srcw);
1951
1952 if (FAST_IS_REG(src)) {
1953 if (DR(src) != 4)
1954 src_r = src;
1955 else
1956 FAIL_IF(push_inst(compiler, ADDU_W | S(src) | TA(0) | D(TMP_REG2), DR(TMP_REG2)));
1957 }
1958
1959 if (type >= SLJIT_CALL0) {
1960 SLJIT_ASSERT(DR(PIC_ADDR_REG) == 25 && PIC_ADDR_REG == TMP_REG2);
1961 if (src & (SLJIT_IMM | SLJIT_MEM)) {
1962 if (src & SLJIT_IMM)
1963 FAIL_IF(load_immediate(compiler, DR(PIC_ADDR_REG), srcw));
1964 else {
1965 SLJIT_ASSERT(src_r == TMP_REG2 && (src & SLJIT_MEM));
1966 FAIL_IF(emit_op(compiler, SLJIT_MOV, WORD_DATA, TMP_REG2, 0, TMP_REG1, 0, src, srcw));
1967 }
1968 FAIL_IF(push_inst(compiler, JALR | S(PIC_ADDR_REG) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
1969 /* We need an extra instruction in any case. */
1970 return push_inst(compiler, ADDU_W | S(SLJIT_R0) | TA(0) | DA(4), UNMOVABLE_INS);
1971 }
1972
1973 /* Register input. */
1974 if (type >= SLJIT_CALL1)
1975 FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_R0) | TA(0) | DA(4), 4));
1976 FAIL_IF(push_inst(compiler, JALR | S(src_r) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
1977 return push_inst(compiler, ADDU_W | S(src_r) | TA(0) | D(PIC_ADDR_REG), UNMOVABLE_INS);
1978 }
1979
1980 if (src & SLJIT_IMM) {
1981 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1982 FAIL_IF(!jump);
1983 set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_JAL : 0));
1984 jump->u.target = srcw;
1985
1986 if (compiler->delay_slot != UNMOVABLE_INS)
1987 jump->flags |= IS_MOVABLE;
1988
1989 FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1990 }
1991 else if (src & SLJIT_MEM)
1992 FAIL_IF(emit_op(compiler, SLJIT_MOV, WORD_DATA, TMP_REG2, 0, TMP_REG1, 0, src, srcw));
1993
1994 FAIL_IF(push_inst(compiler, JR | S(src_r), UNMOVABLE_INS));
1995 if (jump)
1996 jump->addr = compiler->size;
1997 FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1998 return SLJIT_SUCCESS;
1999 }
2000
sljit_emit_op_flags(struct sljit_compiler * compiler,sljit_si op,sljit_si dst,sljit_sw dstw,sljit_si src,sljit_sw srcw,sljit_si type)2001 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op_flags(struct sljit_compiler *compiler, sljit_si op,
2002 sljit_si dst, sljit_sw dstw,
2003 sljit_si src, sljit_sw srcw,
2004 sljit_si type)
2005 {
2006 sljit_si sugg_dst_ar, dst_ar;
2007 sljit_si flags = GET_ALL_FLAGS(op);
2008 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
2009 # define mem_type WORD_DATA
2010 #else
2011 sljit_si mem_type = (op & SLJIT_INT_OP) ? (INT_DATA | SIGNED_DATA) : WORD_DATA;
2012 #endif
2013
2014 CHECK_ERROR();
2015 CHECK(check_sljit_emit_op_flags(compiler, op, dst, dstw, src, srcw, type));
2016 ADJUST_LOCAL_OFFSET(dst, dstw);
2017
2018 if (dst == SLJIT_UNUSED)
2019 return SLJIT_SUCCESS;
2020
2021 op = GET_OPCODE(op);
2022 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
2023 if (op == SLJIT_MOV_SI || op == SLJIT_MOV_UI)
2024 mem_type = INT_DATA | SIGNED_DATA;
2025 #endif
2026 sugg_dst_ar = DR((op < SLJIT_ADD && FAST_IS_REG(dst)) ? dst : TMP_REG2);
2027
2028 compiler->cache_arg = 0;
2029 compiler->cache_argw = 0;
2030 if (op >= SLJIT_ADD && (src & SLJIT_MEM)) {
2031 ADJUST_LOCAL_OFFSET(src, srcw);
2032 FAIL_IF(emit_op_mem2(compiler, mem_type | LOAD_DATA, DR(TMP_REG1), src, srcw, dst, dstw));
2033 src = TMP_REG1;
2034 srcw = 0;
2035 }
2036
2037 switch (type & 0xff) {
2038 case SLJIT_EQUAL:
2039 case SLJIT_NOT_EQUAL:
2040 FAIL_IF(push_inst(compiler, SLTIU | SA(EQUAL_FLAG) | TA(sugg_dst_ar) | IMM(1), sugg_dst_ar));
2041 dst_ar = sugg_dst_ar;
2042 break;
2043 case SLJIT_LESS:
2044 case SLJIT_GREATER_EQUAL:
2045 case SLJIT_D_LESS:
2046 case SLJIT_D_GREATER_EQUAL:
2047 dst_ar = ULESS_FLAG;
2048 break;
2049 case SLJIT_GREATER:
2050 case SLJIT_LESS_EQUAL:
2051 case SLJIT_D_GREATER:
2052 case SLJIT_D_LESS_EQUAL:
2053 dst_ar = UGREATER_FLAG;
2054 break;
2055 case SLJIT_SIG_LESS:
2056 case SLJIT_SIG_GREATER_EQUAL:
2057 dst_ar = LESS_FLAG;
2058 break;
2059 case SLJIT_SIG_GREATER:
2060 case SLJIT_SIG_LESS_EQUAL:
2061 dst_ar = GREATER_FLAG;
2062 break;
2063 case SLJIT_OVERFLOW:
2064 case SLJIT_NOT_OVERFLOW:
2065 dst_ar = OVERFLOW_FLAG;
2066 break;
2067 case SLJIT_MUL_OVERFLOW:
2068 case SLJIT_MUL_NOT_OVERFLOW:
2069 FAIL_IF(push_inst(compiler, SLTIU | SA(OVERFLOW_FLAG) | TA(sugg_dst_ar) | IMM(1), sugg_dst_ar));
2070 dst_ar = sugg_dst_ar;
2071 type ^= 0x1; /* Flip type bit for the XORI below. */
2072 break;
2073 case SLJIT_D_EQUAL:
2074 case SLJIT_D_NOT_EQUAL:
2075 dst_ar = EQUAL_FLAG;
2076 break;
2077
2078 case SLJIT_D_UNORDERED:
2079 case SLJIT_D_ORDERED:
2080 FAIL_IF(push_inst(compiler, CFC1 | TA(sugg_dst_ar) | DA(FCSR_REG), sugg_dst_ar));
2081 FAIL_IF(push_inst(compiler, SRL | TA(sugg_dst_ar) | DA(sugg_dst_ar) | SH_IMM(23), sugg_dst_ar));
2082 FAIL_IF(push_inst(compiler, ANDI | SA(sugg_dst_ar) | TA(sugg_dst_ar) | IMM(1), sugg_dst_ar));
2083 dst_ar = sugg_dst_ar;
2084 break;
2085
2086 default:
2087 SLJIT_ASSERT_STOP();
2088 dst_ar = sugg_dst_ar;
2089 break;
2090 }
2091
2092 if (type & 0x1) {
2093 FAIL_IF(push_inst(compiler, XORI | SA(dst_ar) | TA(sugg_dst_ar) | IMM(1), sugg_dst_ar));
2094 dst_ar = sugg_dst_ar;
2095 }
2096
2097 if (op >= SLJIT_ADD) {
2098 if (DR(TMP_REG2) != dst_ar)
2099 FAIL_IF(push_inst(compiler, ADDU_W | SA(dst_ar) | TA(0) | D(TMP_REG2), DR(TMP_REG2)));
2100 return emit_op(compiler, op | flags, mem_type | CUMULATIVE_OP | LOGICAL_OP | IMM_OP | ALT_KEEP_CACHE, dst, dstw, src, srcw, TMP_REG2, 0);
2101 }
2102
2103 if (dst & SLJIT_MEM)
2104 return emit_op_mem(compiler, mem_type, dst_ar, dst, dstw);
2105
2106 if (sugg_dst_ar != dst_ar)
2107 return push_inst(compiler, ADDU_W | SA(dst_ar) | TA(0) | DA(sugg_dst_ar), sugg_dst_ar);
2108 return SLJIT_SUCCESS;
2109
2110 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
2111 # undef mem_type
2112 #endif
2113 }
2114
sljit_emit_const(struct sljit_compiler * compiler,sljit_si dst,sljit_sw dstw,sljit_sw init_value)2115 SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, sljit_si dst, sljit_sw dstw, sljit_sw init_value)
2116 {
2117 struct sljit_const *const_;
2118 sljit_si reg;
2119
2120 CHECK_ERROR_PTR();
2121 CHECK_PTR(check_sljit_emit_const(compiler, dst, dstw, init_value));
2122 ADJUST_LOCAL_OFFSET(dst, dstw);
2123
2124 const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const));
2125 PTR_FAIL_IF(!const_);
2126 set_const(const_, compiler);
2127
2128 reg = SLOW_IS_REG(dst) ? dst : TMP_REG2;
2129
2130 PTR_FAIL_IF(emit_const(compiler, reg, init_value));
2131
2132 if (dst & SLJIT_MEM)
2133 PTR_FAIL_IF(emit_op(compiler, SLJIT_MOV, WORD_DATA, dst, dstw, TMP_REG1, 0, TMP_REG2, 0));
2134 return const_;
2135 }
2136
