1 /* $NetBSD: sljitNativeMIPS_common.c,v 1.3 2016/05/29 17:09:33 alnsn Exp $ */
2
3 /*
4 * Stack-less Just-In-Time compiler
5 *
6 * Copyright 2009-2012 Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without modification, are
9 * permitted provided that the following conditions are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright notice, this list of
12 * conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
15 * of conditions and the following disclaimer in the documentation and/or other materials
16 * provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
21 * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
23 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
26 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 /* Latest MIPS architecture. */
30 /* Automatically detect SLJIT_MIPS_R1 */
31
sljit_get_platform_name(void)32 SLJIT_API_FUNC_ATTRIBUTE const char* sljit_get_platform_name(void)
33 {
34 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
35 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
36 return "MIPS32-R1" SLJIT_CPUINFO;
37 #else
38 return "MIPS64-R1" SLJIT_CPUINFO;
39 #endif
40 #else /* SLJIT_MIPS_R1 */
41 return "MIPS III" SLJIT_CPUINFO;
42 #endif
43 }
44
45 /* Length of an instruction word
46 Both for mips-32 and mips-64 */
47 typedef sljit_u32 sljit_ins;
48
49 #define TMP_REG1 (SLJIT_NUMBER_OF_REGISTERS + 2)
50 #define TMP_REG2 (SLJIT_NUMBER_OF_REGISTERS + 3)
51 #define TMP_REG3 (SLJIT_NUMBER_OF_REGISTERS + 4)
52
53 /* For position independent code, t9 must contain the function address. */
54 #define PIC_ADDR_REG TMP_REG2
55
56 /* Floating point status register. */
57 #define FCSR_REG 31
58 /* Return address register. */
59 #define RETURN_ADDR_REG 31
60
61 /* Flags are kept in volatile registers. */
62 #define EQUAL_FLAG 12
63 /* And carry flag as well. */
64 #define ULESS_FLAG 13
65 #define UGREATER_FLAG 14
66 #define LESS_FLAG 15
67 #define GREATER_FLAG 31
68 #define OVERFLOW_FLAG 1
69
70 #define TMP_FREG1 (0)
71 #define TMP_FREG2 ((SLJIT_NUMBER_OF_FLOAT_REGISTERS + 1) << 1)
72
73 static const sljit_u8 reg_map[SLJIT_NUMBER_OF_REGISTERS + 5] = {
74 0, 2, 5, 6, 7, 8, 9, 10, 11, 24, 23, 22, 21, 20, 19, 18, 17, 16, 29, 3, 25, 4
75 };
76
77 /* --------------------------------------------------------------------- */
78 /* Instrucion forms */
79 /* --------------------------------------------------------------------- */
80
81 #define S(s) (reg_map[s] << 21)
82 #define T(t) (reg_map[t] << 16)
83 #define D(d) (reg_map[d] << 11)
84 /* Absolute registers. */
85 #define SA(s) ((s) << 21)
86 #define TA(t) ((t) << 16)
87 #define DA(d) ((d) << 11)
88 #define FT(t) ((t) << 16)
89 #define FS(s) ((s) << 11)
90 #define FD(d) ((d) << 6)
91 #define IMM(imm) ((imm) & 0xffff)
92 #define SH_IMM(imm) ((imm) << 6)
93
94 #define DR(dr) (reg_map[dr])
95 #define HI(opcode) ((opcode) << 26)
96 #define LO(opcode) (opcode)
97 /* S = (16 << 21) D = (17 << 21) */
98 #define FMT_S (16 << 21)
99
100 #define ABS_S (HI(17) | FMT_S | LO(5))
101 #define ADD_S (HI(17) | FMT_S | LO(0))
102 #define ADDIU (HI(9))
103 #define ADDU (HI(0) | LO(33))
104 #define AND (HI(0) | LO(36))
105 #define ANDI (HI(12))
106 #define B (HI(4))
107 #define BAL (HI(1) | (17 << 16))
108 #define BC1F (HI(17) | (8 << 21))
109 #define BC1T (HI(17) | (8 << 21) | (1 << 16))
110 #define BEQ (HI(4))
111 #define BGEZ (HI(1) | (1 << 16))
112 #define BGTZ (HI(7))
113 #define BLEZ (HI(6))
114 #define BLTZ (HI(1) | (0 << 16))
115 #define BNE (HI(5))
116 #define BREAK (HI(0) | LO(13))
117 #define CFC1 (HI(17) | (2 << 21))
118 #define C_UN_S (HI(17) | FMT_S | LO(49))
119 #define C_UEQ_S (HI(17) | FMT_S | LO(51))
120 #define C_ULE_S (HI(17) | FMT_S | LO(55))
121 #define C_ULT_S (HI(17) | FMT_S | LO(53))
122 #define CVT_S_S (HI(17) | FMT_S | LO(32))
123 #define DADDIU (HI(25))
124 #define DADDU (HI(0) | LO(45))
125 #define DDIV (HI(0) | LO(30))
126 #define DDIVU (HI(0) | LO(31))
127 #define DIV (HI(0) | LO(26))
128 #define DIVU (HI(0) | LO(27))
129 #define DIV_S (HI(17) | FMT_S | LO(3))
130 #define DMULT (HI(0) | LO(28))
131 #define DMULTU (HI(0) | LO(29))
132 #define DSLL (HI(0) | LO(56))
133 #define DSLL32 (HI(0) | LO(60))
134 #define DSLLV (HI(0) | LO(20))
135 #define DSRA (HI(0) | LO(59))
136 #define DSRA32 (HI(0) | LO(63))
137 #define DSRAV (HI(0) | LO(23))
138 #define DSRL (HI(0) | LO(58))
139 #define DSRL32 (HI(0) | LO(62))
140 #define DSRLV (HI(0) | LO(22))
141 #define DSUBU (HI(0) | LO(47))
142 #define J (HI(2))
143 #define JAL (HI(3))
144 #define JALR (HI(0) | LO(9))
145 #define JR (HI(0) | LO(8))
146 #define LD (HI(55))
147 #define LUI (HI(15))
148 #define LW (HI(35))
149 #define MFC1 (HI(17))
150 #define MFHI (HI(0) | LO(16))
151 #define MFLO (HI(0) | LO(18))
152 #define MOV_S (HI(17) | FMT_S | LO(6))
153 #define MTC1 (HI(17) | (4 << 21))
154 #define MUL_S (HI(17) | FMT_S | LO(2))
155 #define MULT (HI(0) | LO(24))
156 #define MULTU (HI(0) | LO(25))
157 #define NEG_S (HI(17) | FMT_S | LO(7))
158 #define NOP (HI(0) | LO(0))
159 #define NOR (HI(0) | LO(39))
160 #define OR (HI(0) | LO(37))
161 #define ORI (HI(13))
162 #define SD (HI(63))
163 #define SLT (HI(0) | LO(42))
164 #define SLTI (HI(10))
165 #define SLTIU (HI(11))
166 #define SLTU (HI(0) | LO(43))
167 #define SLL (HI(0) | LO(0))
168 #define SLLV (HI(0) | LO(4))
169 #define SRL (HI(0) | LO(2))
170 #define SRLV (HI(0) | LO(6))
171 #define SRA (HI(0) | LO(3))
172 #define SRAV (HI(0) | LO(7))
173 #define SUB_S (HI(17) | FMT_S | LO(1))
174 #define SUBU (HI(0) | LO(35))
175 #define SW (HI(43))
176 #define TRUNC_W_S (HI(17) | FMT_S | LO(13))
177 #define XOR (HI(0) | LO(38))
178 #define XORI (HI(14))
179
180 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
181 #define CLZ (HI(28) | LO(32))
182 #define DCLZ (HI(28) | LO(36))
183 #define MUL (HI(28) | LO(2))
184 #define SEB (HI(31) | (16 << 6) | LO(32))
185 #define SEH (HI(31) | (24 << 6) | LO(32))
186 #endif
187
188 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
189 #define ADDU_W ADDU
190 #define ADDIU_W ADDIU
191 #define SLL_W SLL
192 #define SUBU_W SUBU
193 #else
194 #define ADDU_W DADDU
195 #define ADDIU_W DADDIU
196 #define SLL_W DSLL
197 #define SUBU_W DSUBU
198 #endif
199
200 #define SIMM_MAX (0x7fff)
201 #define SIMM_MIN (-0x8000)
202 #define UIMM_MAX (0xffff)
203
204 /* dest_reg is the absolute name of the register
205 Useful for reordering instructions in the delay slot. */
push_inst(struct sljit_compiler * compiler,sljit_ins ins,sljit_s32 delay_slot)206 static sljit_s32 push_inst(struct sljit_compiler *compiler, sljit_ins ins, sljit_s32 delay_slot)
207 {
208 SLJIT_ASSERT(delay_slot == MOVABLE_INS || delay_slot >= UNMOVABLE_INS
209 || delay_slot == ((ins >> 11) & 0x1f) || delay_slot == ((ins >> 16) & 0x1f));
210 sljit_ins *ptr = (sljit_ins*)ensure_buf(compiler, sizeof(sljit_ins));
211 FAIL_IF(!ptr);
212 *ptr = ins;
213 compiler->size++;
214 compiler->delay_slot = delay_slot;
215 return SLJIT_SUCCESS;
216 }
217
invert_branch(sljit_s32 flags)218 static SLJIT_INLINE sljit_ins invert_branch(sljit_s32 flags)
219 {
220 return (flags & IS_BIT26_COND) ? (1 << 26) : (1 << 16);
221 }
222
detect_jump_type(struct sljit_jump * jump,sljit_ins * code_ptr,sljit_ins * code)223 static SLJIT_INLINE sljit_ins* detect_jump_type(struct sljit_jump *jump, sljit_ins *code_ptr, sljit_ins *code)
224 {
225 sljit_sw diff;
226 sljit_uw target_addr;
227 sljit_ins *inst;
228 sljit_ins saved_inst;
229
230 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
231 if (jump->flags & (SLJIT_REWRITABLE_JUMP | IS_CALL))
232 return code_ptr;
233 #else
234 if (jump->flags & SLJIT_REWRITABLE_JUMP)
235 return code_ptr;
236 #endif
237
238 if (jump->flags & JUMP_ADDR)
239 target_addr = jump->u.target;
240 else {
241 SLJIT_ASSERT(jump->flags & JUMP_LABEL);
242 target_addr = (sljit_uw)(code + jump->u.label->size);
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)) >> 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)) >> 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_uw addr;
370
371 struct sljit_label *label;
372 struct sljit_jump *jump;
373 struct sljit_const *const_;
374
375 CHECK_ERROR_PTR();
376 CHECK_PTR(check_sljit_generate_code(compiler));
377 reverse_buf(compiler);
378
379 code = (sljit_ins*)SLJIT_MALLOC_EXEC(compiler->size * sizeof(sljit_ins));
380 PTR_FAIL_WITH_EXEC_IF(code);
381 buf = compiler->buf;
382
383 code_ptr = code;
384 word_count = 0;
385 label = compiler->labels;
386 jump = compiler->jumps;
387 const_ = compiler->consts;
388 do {
389 buf_ptr = (sljit_ins*)buf->memory;
390 buf_end = buf_ptr + (buf->used_size >> 2);
391 do {
392 *code_ptr = *buf_ptr++;
393 SLJIT_ASSERT(!label || label->size >= word_count);
394 SLJIT_ASSERT(!jump || jump->addr >= word_count);
395 SLJIT_ASSERT(!const_ || const_->addr >= word_count);
396 /* These structures are ordered by their address. */
397 if (label && label->size == word_count) {
398 /* Just recording the address. */
399 label->addr = (sljit_uw)code_ptr;
400 label->size = code_ptr - code;
401 label = label->next;
402 }
403 if (jump && jump->addr == word_count) {
404 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
405 jump->addr = (sljit_uw)(code_ptr - 3);
406 #else
407 jump->addr = (sljit_uw)(code_ptr - 7);
408 #endif
409 code_ptr = detect_jump_type(jump, code_ptr, code);
410 jump = jump->next;
411 }
412 if (const_ && const_->addr == word_count) {
413 /* Just recording the address. */
414 const_->addr = (sljit_uw)code_ptr;
415 const_ = const_->next;
416 }
417 code_ptr ++;
418 word_count ++;
419 } while (buf_ptr < buf_end);
420
421 buf = buf->next;
422 } while (buf);
423
424 if (label && label->size == word_count) {
425 label->addr = (sljit_uw)code_ptr;
426 label->size = code_ptr - code;
427 label = label->next;
428 }
429
430 SLJIT_ASSERT(!label);
431 SLJIT_ASSERT(!jump);
432 SLJIT_ASSERT(!const_);
433 SLJIT_ASSERT(code_ptr - code <= (sljit_sw)compiler->size);
434
435 jump = compiler->jumps;
436 while (jump) {
437 do {
438 addr = (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target;
439 buf_ptr = (sljit_ins*)jump->addr;
440
441 if (jump->flags & PATCH_B) {
442 addr = (sljit_sw)(addr - (jump->addr + sizeof(sljit_ins))) >> 2;
443 SLJIT_ASSERT((sljit_sw)addr <= SIMM_MAX && (sljit_sw)addr >= SIMM_MIN);
444 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | (addr & 0xffff);
445 break;
446 }
447 if (jump->flags & PATCH_J) {
448 SLJIT_ASSERT((addr & ~0xfffffff) == ((jump->addr + sizeof(sljit_ins)) & ~0xfffffff));
449 buf_ptr[0] |= (addr >> 2) & 0x03ffffff;
450 break;
451 }
452
453 /* Set the fields of immediate loads. */
454 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
455 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | ((addr >> 16) & 0xffff);
456 buf_ptr[1] = (buf_ptr[1] & 0xffff0000) | (addr & 0xffff);
457 #else
458 if (jump->flags & PATCH_ABS32) {
459 SLJIT_ASSERT(addr <= 0x7fffffff);
460 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | ((addr >> 16) & 0xffff);
461 buf_ptr[1] = (buf_ptr[1] & 0xffff0000) | (addr & 0xffff);
462 }
463 else if (jump->flags & PATCH_ABS48) {
464 SLJIT_ASSERT(addr <= 0x7fffffffffffl);
465 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | ((addr >> 32) & 0xffff);
466 buf_ptr[1] = (buf_ptr[1] & 0xffff0000) | ((addr >> 16) & 0xffff);
467 buf_ptr[3] = (buf_ptr[3] & 0xffff0000) | (addr & 0xffff);
468 }
469 else {
470 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | ((addr >> 48) & 0xffff);
471 buf_ptr[1] = (buf_ptr[1] & 0xffff0000) | ((addr >> 32) & 0xffff);
472 buf_ptr[3] = (buf_ptr[3] & 0xffff0000) | ((addr >> 16) & 0xffff);
473 buf_ptr[5] = (buf_ptr[5] & 0xffff0000) | (addr & 0xffff);
474 }
475 #endif
476 } while (0);
477 jump = jump->next;
478 }
479
480 compiler->error = SLJIT_ERR_COMPILED;
481 compiler->executable_size = (code_ptr - code) * sizeof(sljit_ins);
482 #ifndef __GNUC__
483 SLJIT_CACHE_FLUSH(code, code_ptr);
484 #else
485 /* GCC workaround for invalid code generation with -O2. */
486 sljit_cache_flush(code, code_ptr);
487 #endif
488 return code;
489 }
490
491 /* --------------------------------------------------------------------- */
492 /* Entry, exit */
493 /* --------------------------------------------------------------------- */
494
495 /* Creates an index in data_transfer_insts array. */
496 #define LOAD_DATA 0x01
497 #define WORD_DATA 0x00
498 #define BYTE_DATA 0x02
499 #define HALF_DATA 0x04
500 #define INT_DATA 0x06
501 #define SIGNED_DATA 0x08
502 /* Separates integer and floating point registers */
503 #define GPR_REG 0x0f
504 #define DOUBLE_DATA 0x10
505 #define SINGLE_DATA 0x12
506
507 #define MEM_MASK 0x1f
508
509 #define WRITE_BACK 0x00020
510 #define ARG_TEST 0x00040
511 #define ALT_KEEP_CACHE 0x00080
512 #define CUMULATIVE_OP 0x00100
513 #define LOGICAL_OP 0x00200
514 #define IMM_OP 0x00400
515 #define SRC2_IMM 0x00800
516
517 #define UNUSED_DEST 0x01000
518 #define REG_DEST 0x02000
519 #define REG1_SOURCE 0x04000
520 #define REG2_SOURCE 0x08000
521 #define SLOW_SRC1 0x10000
522 #define SLOW_SRC2 0x20000
523 #define SLOW_DEST 0x40000
524
525 /* Only these flags are set. UNUSED_DEST is not set when no flags should be set. */
526 #define CHECK_FLAGS(list) \
527 (!(flags & UNUSED_DEST) || (op & GET_FLAGS(~(list))))
528
529 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
530 #define STACK_STORE SW
531 #define STACK_LOAD LW
532 #else
533 #define STACK_STORE SD
534 #define STACK_LOAD LD
535 #endif
536
537 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
538 #include "sljitNativeMIPS_32.c"
539 #else
540 #include "sljitNativeMIPS_64.c"
541 #endif
542
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)543 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compiler,
544 sljit_s32 options, sljit_s32 args, sljit_s32 scratches, sljit_s32 saveds,
545 sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size)
546 {
547 sljit_ins base;
548 sljit_s32 i, tmp, offs;
549
550 CHECK_ERROR();
551 CHECK(check_sljit_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size));
552 set_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size);
553
554 local_size += GET_SAVED_REGISTERS_SIZE(scratches, saveds, 1) + SLJIT_LOCALS_OFFSET;
555 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
556 local_size = (local_size + 15) & ~0xf;
557 #else
558 local_size = (local_size + 31) & ~0x1f;
559 #endif
560 compiler->local_size = local_size;
561
562 if (local_size <= SIMM_MAX) {
563 /* Frequent case. */
564 FAIL_IF(push_inst(compiler, ADDIU_W | S(SLJIT_SP) | T(SLJIT_SP) | IMM(-local_size), DR(SLJIT_SP)));
565 base = S(SLJIT_SP);
566 }
567 else {
568 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), local_size));
569 FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_SP) | TA(0) | D(TMP_REG2), DR(TMP_REG2)));
570 FAIL_IF(push_inst(compiler, SUBU_W | S(SLJIT_SP) | T(TMP_REG1) | D(SLJIT_SP), DR(SLJIT_SP)));
571 base = S(TMP_REG2);
572 local_size = 0;
573 }
574
575 offs = local_size - (sljit_sw)(sizeof(sljit_sw));
576 FAIL_IF(push_inst(compiler, STACK_STORE | base | TA(RETURN_ADDR_REG) | IMM(offs), MOVABLE_INS));
577
578 tmp = saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - saveds) : SLJIT_FIRST_SAVED_REG;
579 for (i = SLJIT_S0; i >= tmp; i--) {
580 offs -= (sljit_s32)(sizeof(sljit_sw));
581 FAIL_IF(push_inst(compiler, STACK_STORE | base | T(i) | IMM(offs), MOVABLE_INS));
582 }
583
584 for (i = scratches; i >= SLJIT_FIRST_SAVED_REG; i--) {
585 offs -= (sljit_s32)(sizeof(sljit_sw));
586 FAIL_IF(push_inst(compiler, STACK_STORE | base | T(i) | IMM(offs), MOVABLE_INS));
587 }
588
589 if (args >= 1)
590 FAIL_IF(push_inst(compiler, ADDU_W | SA(4) | TA(0) | D(SLJIT_S0), DR(SLJIT_S0)));
591 if (args >= 2)
592 FAIL_IF(push_inst(compiler, ADDU_W | SA(5) | TA(0) | D(SLJIT_S1), DR(SLJIT_S1)));
593 if (args >= 3)
594 FAIL_IF(push_inst(compiler, ADDU_W | SA(6) | TA(0) | D(SLJIT_S2), DR(SLJIT_S2)));
595
596 return SLJIT_SUCCESS;
597 }
598
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)599 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_set_context(struct sljit_compiler *compiler,
600 sljit_s32 options, sljit_s32 args, sljit_s32 scratches, sljit_s32 saveds,
601 sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size)
602 {
603 CHECK_ERROR();
604 CHECK(check_sljit_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size));
605 set_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size);
606
607 local_size += GET_SAVED_REGISTERS_SIZE(scratches, saveds, 1) + SLJIT_LOCALS_OFFSET;
608 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
609 compiler->local_size = (local_size + 15) & ~0xf;
610 #else
611 compiler->local_size = (local_size + 31) & ~0x1f;
612 #endif
613 return SLJIT_SUCCESS;
614 }
615
sljit_emit_return(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 src,sljit_sw srcw)616 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 src, sljit_sw srcw)
617 {
618 sljit_s32 local_size, i, tmp, offs;
619 sljit_ins base;
620
621 CHECK_ERROR();
622 CHECK(check_sljit_emit_return(compiler, op, src, srcw));
623
624 FAIL_IF(emit_mov_before_return(compiler, op, src, srcw));
625
626 local_size = compiler->local_size;
627 if (local_size <= SIMM_MAX)
628 base = S(SLJIT_SP);
629 else {
630 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), local_size));
631 FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_SP) | T(TMP_REG1) | D(TMP_REG1), DR(TMP_REG1)));
632 base = S(TMP_REG1);
633 local_size = 0;
634 }
635
636 FAIL_IF(push_inst(compiler, STACK_LOAD | base | TA(RETURN_ADDR_REG) | IMM(local_size - (sljit_s32)sizeof(sljit_sw)), RETURN_ADDR_REG));
637 offs = local_size - (sljit_s32)GET_SAVED_REGISTERS_SIZE(compiler->scratches, compiler->saveds, 1);
638
639 tmp = compiler->scratches;
640 for (i = SLJIT_FIRST_SAVED_REG; i <= tmp; i++) {
641 FAIL_IF(push_inst(compiler, STACK_LOAD | base | T(i) | IMM(offs), DR(i)));
642 offs += (sljit_s32)(sizeof(sljit_sw));
643 }
644
645 tmp = compiler->saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - compiler->saveds) : SLJIT_FIRST_SAVED_REG;
646 for (i = tmp; i <= SLJIT_S0; i++) {
647 FAIL_IF(push_inst(compiler, STACK_LOAD | base | T(i) | IMM(offs), DR(i)));
648 offs += (sljit_s32)(sizeof(sljit_sw));
649 }
650
651 SLJIT_ASSERT(offs == local_size - (sljit_sw)(sizeof(sljit_sw)));
652
653 FAIL_IF(push_inst(compiler, JR | SA(RETURN_ADDR_REG), UNMOVABLE_INS));
654 if (compiler->local_size <= SIMM_MAX)
655 return push_inst(compiler, ADDIU_W | S(SLJIT_SP) | T(SLJIT_SP) | IMM(compiler->local_size), UNMOVABLE_INS);
656 else
657 return push_inst(compiler, ADDU_W | S(TMP_REG1) | TA(0) | D(SLJIT_SP), UNMOVABLE_INS);
658 }
659
660 #undef STACK_STORE
661 #undef STACK_LOAD
662
663 /* --------------------------------------------------------------------- */
664 /* Operators */
665 /* --------------------------------------------------------------------- */
666
667 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
668 #define ARCH_32_64(a, b) a
669 #else
670 #define ARCH_32_64(a, b) b
671 #endif
672
673 static const sljit_ins data_transfer_insts[16 + 4] = {
674 /* u w s */ ARCH_32_64(HI(43) /* sw */, HI(63) /* sd */),
675 /* u w l */ ARCH_32_64(HI(35) /* lw */, HI(55) /* ld */),
676 /* u b s */ HI(40) /* sb */,
677 /* u b l */ HI(36) /* lbu */,
678 /* u h s */ HI(41) /* sh */,
679 /* u h l */ HI(37) /* lhu */,
680 /* u i s */ HI(43) /* sw */,
681 /* u i l */ ARCH_32_64(HI(35) /* lw */, HI(39) /* lwu */),
682
683 /* s w s */ ARCH_32_64(HI(43) /* sw */, HI(63) /* sd */),
684 /* s w l */ ARCH_32_64(HI(35) /* lw */, HI(55) /* ld */),
685 /* s b s */ HI(40) /* sb */,
686 /* s b l */ HI(32) /* lb */,
687 /* s h s */ HI(41) /* sh */,
688 /* s h l */ HI(33) /* lh */,
689 /* s i s */ HI(43) /* sw */,
690 /* s i l */ HI(35) /* lw */,
691
692 /* d s */ HI(61) /* sdc1 */,
693 /* d l */ HI(53) /* ldc1 */,
694 /* s s */ HI(57) /* swc1 */,
695 /* s l */ HI(49) /* lwc1 */,
696 };
697
698 #undef ARCH_32_64
699
700 /* reg_ar is an absoulute register! */
701
702 /* 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)703 static sljit_s32 getput_arg_fast(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg_ar, sljit_s32 arg, sljit_sw argw)
704 {
705 SLJIT_ASSERT(arg & SLJIT_MEM);
706
707 if ((!(flags & WRITE_BACK) || !(arg & REG_MASK)) && !(arg & OFFS_REG_MASK) && argw <= SIMM_MAX && argw >= SIMM_MIN) {
708 /* Works for both absoulte and relative addresses. */
709 if (SLJIT_UNLIKELY(flags & ARG_TEST))
710 return 1;
711 FAIL_IF(push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(arg & REG_MASK)
712 | TA(reg_ar) | IMM(argw), ((flags & MEM_MASK) <= GPR_REG && (flags & LOAD_DATA)) ? reg_ar : MOVABLE_INS));
713 return -1;
714 }
715 return 0;
716 }
717
718 /* See getput_arg below.
719 Note: can_cache is called only for binary operators. Those
720 operators always uses word arguments without write back. */
can_cache(sljit_s32 arg,sljit_sw argw,sljit_s32 next_arg,sljit_sw next_argw)721 static sljit_s32 can_cache(sljit_s32 arg, sljit_sw argw, sljit_s32 next_arg, sljit_sw next_argw)
722 {
723 SLJIT_ASSERT((arg & SLJIT_MEM) && (next_arg & SLJIT_MEM));
724
725 /* Simple operation except for updates. */
726 if (arg & OFFS_REG_MASK) {
727 argw &= 0x3;
728 next_argw &= 0x3;
729 if (argw && argw == next_argw && (arg == next_arg || (arg & OFFS_REG_MASK) == (next_arg & OFFS_REG_MASK)))
730 return 1;
731 return 0;
732 }
733
734 if (arg == next_arg) {
735 if (((next_argw - argw) <= SIMM_MAX && (next_argw - argw) >= SIMM_MIN))
736 return 1;
737 return 0;
738 }
739
740 return 0;
741 }
742
743 /* 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)744 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)
745 {
746 sljit_s32 tmp_ar, base, delay_slot;
747
748 SLJIT_ASSERT(arg & SLJIT_MEM);
749 if (!(next_arg & SLJIT_MEM)) {
750 next_arg = 0;
751 next_argw = 0;
752 }
753
754 if ((flags & MEM_MASK) <= GPR_REG && (flags & LOAD_DATA)) {
755 tmp_ar = reg_ar;
756 delay_slot = reg_ar;
757 } else {
758 tmp_ar = DR(TMP_REG1);
759 delay_slot = MOVABLE_INS;
760 }
761 base = arg & REG_MASK;
762
763 if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) {
764 argw &= 0x3;
765 if ((flags & WRITE_BACK) && reg_ar == DR(base)) {
766 SLJIT_ASSERT(!(flags & LOAD_DATA) && DR(TMP_REG1) != reg_ar);
767 FAIL_IF(push_inst(compiler, ADDU_W | SA(reg_ar) | TA(0) | D(TMP_REG1), DR(TMP_REG1)));
768 reg_ar = DR(TMP_REG1);
769 }
770
771 /* Using the cache. */
772 if (argw == compiler->cache_argw) {
773 if (!(flags & WRITE_BACK)) {
774 if (arg == compiler->cache_arg)
775 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
776 if ((SLJIT_MEM | (arg & OFFS_REG_MASK)) == compiler->cache_arg) {
777 if (arg == next_arg && argw == (next_argw & 0x3)) {
778 compiler->cache_arg = arg;
779 compiler->cache_argw = argw;
780 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(TMP_REG3), DR(TMP_REG3)));
781 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
782 }
783 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | DA(tmp_ar), tmp_ar));
784 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | SA(tmp_ar) | TA(reg_ar), delay_slot);
785 }
786 }
787 else {
788 if ((SLJIT_MEM | (arg & OFFS_REG_MASK)) == compiler->cache_arg) {
789 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(base), DR(base)));
790 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar), delay_slot);
791 }
792 }
793 }
794
795 if (SLJIT_UNLIKELY(argw)) {
796 compiler->cache_arg = SLJIT_MEM | (arg & OFFS_REG_MASK);
797 compiler->cache_argw = argw;
798 FAIL_IF(push_inst(compiler, SLL_W | T(OFFS_REG(arg)) | D(TMP_REG3) | SH_IMM(argw), DR(TMP_REG3)));
799 }
800
801 if (!(flags & WRITE_BACK)) {
802 if (arg == next_arg && argw == (next_argw & 0x3)) {
803 compiler->cache_arg = arg;
804 compiler->cache_argw = argw;
805 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(!argw ? OFFS_REG(arg) : TMP_REG3) | D(TMP_REG3), DR(TMP_REG3)));
806 tmp_ar = DR(TMP_REG3);
807 }
808 else
809 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(!argw ? OFFS_REG(arg) : TMP_REG3) | DA(tmp_ar), tmp_ar));
810 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | SA(tmp_ar) | TA(reg_ar), delay_slot);
811 }
812 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(!argw ? OFFS_REG(arg) : TMP_REG3) | D(base), DR(base)));
813 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar), delay_slot);
814 }
815
816 if (SLJIT_UNLIKELY(flags & WRITE_BACK) && base) {
817 /* Update only applies if a base register exists. */
818 if (reg_ar == DR(base)) {
819 SLJIT_ASSERT(!(flags & LOAD_DATA) && DR(TMP_REG1) != reg_ar);
820 if (argw <= SIMM_MAX && argw >= SIMM_MIN) {
821 FAIL_IF(push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar) | IMM(argw), MOVABLE_INS));
822 if (argw)
823 return push_inst(compiler, ADDIU_W | S(base) | T(base) | IMM(argw), DR(base));
824 return SLJIT_SUCCESS;
825 }
826 FAIL_IF(push_inst(compiler, ADDU_W | SA(reg_ar) | TA(0) | D(TMP_REG1), DR(TMP_REG1)));
827 reg_ar = DR(TMP_REG1);
828 }
829
830 if (argw <= SIMM_MAX && argw >= SIMM_MIN) {
831 if (argw)
832 FAIL_IF(push_inst(compiler, ADDIU_W | S(base) | T(base) | IMM(argw), DR(base)));
833 }
834 else {
835 if (compiler->cache_arg == SLJIT_MEM && argw - compiler->cache_argw <= SIMM_MAX && argw - compiler->cache_argw >= SIMM_MIN) {
836 if (argw != compiler->cache_argw) {
837 FAIL_IF(push_inst(compiler, ADDIU_W | S(TMP_REG3) | T(TMP_REG3) | IMM(argw - compiler->cache_argw), DR(TMP_REG3)));
838 compiler->cache_argw = argw;
839 }
840 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(base), DR(base)));
841 }
842 else {
843 compiler->cache_arg = SLJIT_MEM;
844 compiler->cache_argw = argw;
845 FAIL_IF(load_immediate(compiler, DR(TMP_REG3), argw));
846 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(base), DR(base)));
847 }
848 }
849 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar), delay_slot);
850 }
851
852 if (compiler->cache_arg == arg && argw - compiler->cache_argw <= SIMM_MAX && argw - compiler->cache_argw >= SIMM_MIN) {
853 if (argw != compiler->cache_argw) {
854 FAIL_IF(push_inst(compiler, ADDIU_W | S(TMP_REG3) | T(TMP_REG3) | IMM(argw - compiler->cache_argw), DR(TMP_REG3)));
855 compiler->cache_argw = argw;
856 }
857 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
858 }
859
860 if (compiler->cache_arg == SLJIT_MEM && argw - compiler->cache_argw <= SIMM_MAX && argw - compiler->cache_argw >= SIMM_MIN) {
861 if (argw != compiler->cache_argw)
862 FAIL_IF(push_inst(compiler, ADDIU_W | S(TMP_REG3) | T(TMP_REG3) | IMM(argw - compiler->cache_argw), DR(TMP_REG3)));
863 }
864 else {
865 compiler->cache_arg = SLJIT_MEM;
866 FAIL_IF(load_immediate(compiler, DR(TMP_REG3), argw));
867 }
868 compiler->cache_argw = argw;
869
870 if (!base)
871 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
872
873 if (arg == next_arg && next_argw - argw <= SIMM_MAX && next_argw - argw >= SIMM_MIN) {
874 compiler->cache_arg = arg;
875 FAIL_IF(push_inst(compiler, ADDU_W | S(TMP_REG3) | T(base) | D(TMP_REG3), DR(TMP_REG3)));
876 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
877 }
878
879 FAIL_IF(push_inst(compiler, ADDU_W | S(TMP_REG3) | T(base) | DA(tmp_ar), tmp_ar));
880 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | SA(tmp_ar) | TA(reg_ar), delay_slot);
881 }
882
emit_op_mem(struct sljit_compiler * compiler,sljit_s32 flags,sljit_s32 reg_ar,sljit_s32 arg,sljit_sw argw)883 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)
884 {
885 if (getput_arg_fast(compiler, flags, reg_ar, arg, argw))
886 return compiler->error;
887 compiler->cache_arg = 0;
888 compiler->cache_argw = 0;
889 return getput_arg(compiler, flags, reg_ar, arg, argw, 0, 0);
890 }
891
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)892 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)
893 {
894 if (getput_arg_fast(compiler, flags, reg, arg1, arg1w))
895 return compiler->error;
896 return getput_arg(compiler, flags, reg, arg1, arg1w, arg2, arg2w);
897 }
898
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)899 static sljit_s32 emit_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 flags,
900 sljit_s32 dst, sljit_sw dstw,
901 sljit_s32 src1, sljit_sw src1w,
902 sljit_s32 src2, sljit_sw src2w)
903 {
904 /* arg1 goes to TMP_REG1 or src reg
905 arg2 goes to TMP_REG2, imm or src reg
906 TMP_REG3 can be used for caching
907 result goes to TMP_REG2, so put result can use TMP_REG1 and TMP_REG3. */
908 sljit_s32 dst_r = TMP_REG2;
909 sljit_s32 src1_r;
910 sljit_sw src2_r = 0;
911 sljit_s32 sugg_src2_r = TMP_REG2;
912
913 if (!(flags & ALT_KEEP_CACHE)) {
914 compiler->cache_arg = 0;
915 compiler->cache_argw = 0;
916 }
917
918 if (SLJIT_UNLIKELY(dst == SLJIT_UNUSED)) {
919 if (op >= SLJIT_MOV && op <= SLJIT_MOVU_S32 && !(src2 & SLJIT_MEM))
920 return SLJIT_SUCCESS;
921 if (GET_FLAGS(op))
922 flags |= UNUSED_DEST;
923 }
924 else if (FAST_IS_REG(dst)) {
925 dst_r = dst;
926 flags |= REG_DEST;
927 if (op >= SLJIT_MOV && op <= SLJIT_MOVU_S32)
928 sugg_src2_r = dst_r;
929 }
930 else if ((dst & SLJIT_MEM) && !getput_arg_fast(compiler, flags | ARG_TEST, DR(TMP_REG1), dst, dstw))
931 flags |= SLOW_DEST;
932
933 if (flags & IMM_OP) {
934 if ((src2 & SLJIT_IMM) && src2w) {
935 if ((!(flags & LOGICAL_OP) && (src2w <= SIMM_MAX && src2w >= SIMM_MIN))
936 || ((flags & LOGICAL_OP) && !(src2w & ~UIMM_MAX))) {
937 flags |= SRC2_IMM;
938 src2_r = src2w;
939 }
940 }
941 if (!(flags & SRC2_IMM) && (flags & CUMULATIVE_OP) && (src1 & SLJIT_IMM) && src1w) {
942 if ((!(flags & LOGICAL_OP) && (src1w <= SIMM_MAX && src1w >= SIMM_MIN))
943 || ((flags & LOGICAL_OP) && !(src1w & ~UIMM_MAX))) {
944 flags |= SRC2_IMM;
945 src2_r = src1w;
946
947 /* And swap arguments. */
948 src1 = src2;
949 src1w = src2w;
950 src2 = SLJIT_IMM;
951 /* src2w = src2_r unneeded. */
952 }
953 }
954 }
955
956 /* Source 1. */
957 if (FAST_IS_REG(src1)) {
958 src1_r = src1;
959 flags |= REG1_SOURCE;
960 }
961 else if (src1 & SLJIT_IMM) {
962 if (src1w) {
963 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), src1w));
964 src1_r = TMP_REG1;
965 }
966 else
967 src1_r = 0;
968 }
969 else {
970 if (getput_arg_fast(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w))
971 FAIL_IF(compiler->error);
972 else
973 flags |= SLOW_SRC1;
974 src1_r = TMP_REG1;
975 }
976
977 /* Source 2. */
978 if (FAST_IS_REG(src2)) {
979 src2_r = src2;
980 flags |= REG2_SOURCE;
981 if (!(flags & REG_DEST) && op >= SLJIT_MOV && op <= SLJIT_MOVU_S32)
982 dst_r = src2_r;
983 }
984 else if (src2 & SLJIT_IMM) {
985 if (!(flags & SRC2_IMM)) {
986 if (src2w) {
987 FAIL_IF(load_immediate(compiler, DR(sugg_src2_r), src2w));
988 src2_r = sugg_src2_r;
989 }
990 else {
991 src2_r = 0;
992 if ((op >= SLJIT_MOV && op <= SLJIT_MOVU_S32) && (dst & SLJIT_MEM))
993 dst_r = 0;
994 }
995 }
996 }
997 else {
998 if (getput_arg_fast(compiler, flags | LOAD_DATA, DR(sugg_src2_r), src2, src2w))
999 FAIL_IF(compiler->error);
1000 else
1001 flags |= SLOW_SRC2;
1002 src2_r = sugg_src2_r;
1003 }
1004
1005 if ((flags & (SLOW_SRC1 | SLOW_SRC2)) == (SLOW_SRC1 | SLOW_SRC2)) {
1006 SLJIT_ASSERT(src2_r == TMP_REG2);
1007 if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
1008 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG2), src2, src2w, src1, src1w));
1009 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w, dst, dstw));
1010 }
1011 else {
1012 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w, src2, src2w));
1013 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG2), src2, src2w, dst, dstw));
1014 }
1015 }
1016 else if (flags & SLOW_SRC1)
1017 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w, dst, dstw));
1018 else if (flags & SLOW_SRC2)
1019 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(sugg_src2_r), src2, src2w, dst, dstw));
1020
1021 FAIL_IF(emit_single_op(compiler, op, flags, dst_r, src1_r, src2_r));
1022
1023 if (dst & SLJIT_MEM) {
1024 if (!(flags & SLOW_DEST)) {
1025 getput_arg_fast(compiler, flags, DR(dst_r), dst, dstw);
1026 return compiler->error;
1027 }
1028 return getput_arg(compiler, flags, DR(dst_r), dst, dstw, 0, 0);
1029 }
1030
1031 return SLJIT_SUCCESS;
1032 }
1033
sljit_emit_op0(struct sljit_compiler * compiler,sljit_s32 op)1034 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op0(struct sljit_compiler *compiler, sljit_s32 op)
1035 {
1036 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1037 sljit_s32 int_op = op & SLJIT_I32_OP;
1038 #endif
1039
1040 CHECK_ERROR();
1041 CHECK(check_sljit_emit_op0(compiler, op));
1042
1043 op = GET_OPCODE(op);
1044 switch (op) {
1045 case SLJIT_BREAKPOINT:
1046 return push_inst(compiler, BREAK, UNMOVABLE_INS);
1047 case SLJIT_NOP:
1048 return push_inst(compiler, NOP, UNMOVABLE_INS);
1049 case SLJIT_LMUL_UW:
1050 case SLJIT_LMUL_SW:
1051 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1052 FAIL_IF(push_inst(compiler, (op == SLJIT_LMUL_UW ? DMULTU : DMULT) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1053 #else
1054 FAIL_IF(push_inst(compiler, (op == SLJIT_LMUL_UW ? MULTU : MULT) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1055 #endif
1056 FAIL_IF(push_inst(compiler, MFLO | D(SLJIT_R0), DR(SLJIT_R0)));
1057 return push_inst(compiler, MFHI | D(SLJIT_R1), DR(SLJIT_R1));
1058 case SLJIT_DIVMOD_UW:
1059 case SLJIT_DIVMOD_SW:
1060 case SLJIT_DIV_UW:
1061 case SLJIT_DIV_SW:
1062 SLJIT_COMPILE_ASSERT((SLJIT_DIVMOD_UW & 0x2) == 0 && SLJIT_DIV_UW - 0x2 == SLJIT_DIVMOD_UW, bad_div_opcode_assignments);
1063 #if !(defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
1064 FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1065 FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1066 #endif
1067
1068 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1069 if (int_op)
1070 FAIL_IF(push_inst(compiler, ((op | 0x2) == SLJIT_DIV_UW ? DIVU : DIV) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1071 else
1072 FAIL_IF(push_inst(compiler, ((op | 0x2) == SLJIT_DIV_UW ? DDIVU : DDIV) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1073 #else
1074 FAIL_IF(push_inst(compiler, ((op | 0x2) == SLJIT_DIV_UW ? DIVU : DIV) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1075 #endif
1076
1077 FAIL_IF(push_inst(compiler, MFLO | D(SLJIT_R0), DR(SLJIT_R0)));
1078 return (op >= SLJIT_DIV_UW) ? SLJIT_SUCCESS : push_inst(compiler, MFHI | D(SLJIT_R1), DR(SLJIT_R1));
1079 }
1080
1081 return SLJIT_SUCCESS;
1082 }
1083
sljit_emit_op1(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 dst,sljit_sw dstw,sljit_s32 src,sljit_sw srcw)1084 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op1(struct sljit_compiler *compiler, sljit_s32 op,
1085 sljit_s32 dst, sljit_sw dstw,
1086 sljit_s32 src, sljit_sw srcw)
1087 {
1088 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1089 # define flags 0
1090 #else
1091 sljit_s32 flags = 0;
1092 #endif
1093
1094 CHECK_ERROR();
1095 CHECK(check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw));
1096 ADJUST_LOCAL_OFFSET(dst, dstw);
1097 ADJUST_LOCAL_OFFSET(src, srcw);
1098
1099 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1100 if ((op & SLJIT_I32_OP) && GET_OPCODE(op) >= SLJIT_NOT) {
1101 flags |= INT_DATA | SIGNED_DATA;
1102 if (src & SLJIT_IMM)
1103 srcw = (sljit_s32)srcw;
1104 }
1105 #endif
1106
1107 switch (GET_OPCODE(op)) {
1108 case SLJIT_MOV:
1109 case SLJIT_MOV_P:
1110 return emit_op(compiler, SLJIT_MOV, WORD_DATA, dst, dstw, TMP_REG1, 0, src, srcw);
1111
1112 case SLJIT_MOV_U32:
1113 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1114 return emit_op(compiler, SLJIT_MOV_U32, INT_DATA, dst, dstw, TMP_REG1, 0, src, srcw);
1115 #else
1116 return emit_op(compiler, SLJIT_MOV_U32, INT_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u32)srcw : srcw);
1117 #endif
1118
1119 case SLJIT_MOV_S32:
1120 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1121 return emit_op(compiler, SLJIT_MOV_S32, INT_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, srcw);
1122 #else
1123 return emit_op(compiler, SLJIT_MOV_S32, INT_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_s32)srcw : srcw);
1124 #endif
1125
1126 case SLJIT_MOV_U8:
1127 return emit_op(compiler, SLJIT_MOV_U8, BYTE_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u8)srcw : srcw);
1128
1129 case SLJIT_MOV_S8:
1130 return emit_op(compiler, SLJIT_MOV_S8, BYTE_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_s8)srcw : srcw);
1131
1132 case SLJIT_MOV_U16:
1133 return emit_op(compiler, SLJIT_MOV_U16, HALF_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u16)srcw : srcw);
1134
1135 case SLJIT_MOV_S16:
1136 return emit_op(compiler, SLJIT_MOV_S16, HALF_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_s16)srcw : srcw);
1137
1138 case SLJIT_MOVU:
1139 case SLJIT_MOVU_P:
1140 return emit_op(compiler, SLJIT_MOV, WORD_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1141
1142 case SLJIT_MOVU_U32:
1143 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1144 return emit_op(compiler, SLJIT_MOV_U32, INT_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1145 #else
1146 return emit_op(compiler, SLJIT_MOV_U32, INT_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u32)srcw : srcw);
1147 #endif
1148
1149 case SLJIT_MOVU_S32:
1150 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1151 return emit_op(compiler, SLJIT_MOV_S32, INT_DATA | SIGNED_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1152 #else
1153 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);
1154 #endif
1155
1156 case SLJIT_MOVU_U8:
1157 return emit_op(compiler, SLJIT_MOV_U8, BYTE_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u8)srcw : srcw);
1158
1159 case SLJIT_MOVU_S8:
1160 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);
1161
1162 case SLJIT_MOVU_U16:
1163 return emit_op(compiler, SLJIT_MOV_U16, HALF_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u16)srcw : srcw);
1164
1165 case SLJIT_MOVU_S16:
1166 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);
1167
1168 case SLJIT_NOT:
1169 return emit_op(compiler, op, flags, dst, dstw, TMP_REG1, 0, src, srcw);
1170
1171 case SLJIT_NEG:
1172 return emit_op(compiler, SLJIT_SUB | GET_ALL_FLAGS(op), flags | IMM_OP, dst, dstw, SLJIT_IMM, 0, src, srcw);
1173
1174 case SLJIT_CLZ:
1175 return emit_op(compiler, op, flags, dst, dstw, TMP_REG1, 0, src, srcw);
1176 }
1177
1178 return SLJIT_SUCCESS;
1179
1180 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1181 # undef flags
1182 #endif
1183 }
1184
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)1185 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op2(struct sljit_compiler *compiler, sljit_s32 op,
1186 sljit_s32 dst, sljit_sw dstw,
1187 sljit_s32 src1, sljit_sw src1w,
1188 sljit_s32 src2, sljit_sw src2w)
1189 {
1190 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1191 # define flags 0
1192 #else
1193 sljit_s32 flags = 0;
1194 #endif
1195
1196 CHECK_ERROR();
1197 CHECK(check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w));
1198 ADJUST_LOCAL_OFFSET(dst, dstw);
1199 ADJUST_LOCAL_OFFSET(src1, src1w);
1200 ADJUST_LOCAL_OFFSET(src2, src2w);
1201
1202 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1203 if (op & SLJIT_I32_OP) {
1204 flags |= INT_DATA | SIGNED_DATA;
1205 if (src1 & SLJIT_IMM)
1206 src1w = (sljit_s32)src1w;
1207 if (src2 & SLJIT_IMM)
1208 src2w = (sljit_s32)src2w;
1209 }
1210 #endif
1211
1212 switch (GET_OPCODE(op)) {
1213 case SLJIT_ADD:
1214 case SLJIT_ADDC:
1215 return emit_op(compiler, op, flags | CUMULATIVE_OP | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1216
1217 case SLJIT_SUB:
1218 case SLJIT_SUBC:
1219 return emit_op(compiler, op, flags | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1220
1221 case SLJIT_MUL:
1222 return emit_op(compiler, op, flags | CUMULATIVE_OP, dst, dstw, src1, src1w, src2, src2w);
1223
1224 case SLJIT_AND:
1225 case SLJIT_OR:
1226 case SLJIT_XOR:
1227 return emit_op(compiler, op, flags | CUMULATIVE_OP | LOGICAL_OP | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1228
1229 case SLJIT_SHL:
1230 case SLJIT_LSHR:
1231 case SLJIT_ASHR:
1232 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1233 if (src2 & SLJIT_IMM)
1234 src2w &= 0x1f;
1235 #else
1236 if (src2 & SLJIT_IMM) {
1237 if (op & SLJIT_I32_OP)
1238 src2w &= 0x1f;
1239 else
1240 src2w &= 0x3f;
1241 }
1242 #endif
1243 return emit_op(compiler, op, flags | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1244 }
1245
1246 return SLJIT_SUCCESS;
1247
1248 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1249 # undef flags
1250 #endif
1251 }
1252
sljit_get_register_index(sljit_s32 reg)1253 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_register_index(sljit_s32 reg)
1254 {
1255 CHECK_REG_INDEX(check_sljit_get_register_index(reg));
1256 return reg_map[reg];
1257 }
1258
sljit_get_float_register_index(sljit_s32 reg)1259 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_float_register_index(sljit_s32 reg)
1260 {
1261 CHECK_REG_INDEX(check_sljit_get_float_register_index(reg));
1262 return reg << 1;
1263 }
1264
sljit_emit_op_custom(struct sljit_compiler * compiler,void * instruction,sljit_s32 size)1265 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_custom(struct sljit_compiler *compiler,
1266 void *instruction, sljit_s32 size)
1267 {
1268 CHECK_ERROR();
1269 CHECK(check_sljit_emit_op_custom(compiler, instruction, size));
1270
1271 return push_inst(compiler, *(sljit_ins*)instruction, UNMOVABLE_INS);
1272 }
1273
1274 /* --------------------------------------------------------------------- */
1275 /* Floating point operators */
1276 /* --------------------------------------------------------------------- */
1277
sljit_is_fpu_available(void)1278 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_is_fpu_available(void)
1279 {
1280 #ifdef SLJIT_IS_FPU_AVAILABLE
1281 return SLJIT_IS_FPU_AVAILABLE;
1282 #elif defined(__GNUC__)
1283 sljit_sw fir;
1284 asm ("cfc1 %0, $0" : "=r"(fir));
1285 return (fir >> 22) & 0x1;
1286 #else
1287 #error "FIR check is not implemented for this architecture"
1288 #endif
1289 }
1290
1291 #define FLOAT_DATA(op) (DOUBLE_DATA | ((op & SLJIT_F32_OP) >> 7))
1292 #define FMT(op) (((op & SLJIT_F32_OP) ^ SLJIT_F32_OP) << (21 - 8))
1293
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)1294 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_sw_from_f64(struct sljit_compiler *compiler, sljit_s32 op,
1295 sljit_s32 dst, sljit_sw dstw,
1296 sljit_s32 src, sljit_sw srcw)
1297 {
1298 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1299 # define flags 0
1300 #else
1301 sljit_s32 flags = (GET_OPCODE(op) == SLJIT_CONV_SW_FROM_F64) << 21;
1302 #endif
1303
1304 if (src & SLJIT_MEM) {
1305 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src, srcw, dst, dstw));
1306 src = TMP_FREG1;
1307 }
1308 else
1309 src <<= 1;
1310
1311 FAIL_IF(push_inst(compiler, (TRUNC_W_S ^ (flags >> 19)) | FMT(op) | FS(src) | FD(TMP_FREG1), MOVABLE_INS));
1312
1313 if (dst == SLJIT_UNUSED)
1314 return SLJIT_SUCCESS;
1315
1316 if (FAST_IS_REG(dst))
1317 return push_inst(compiler, MFC1 | flags | T(dst) | FS(TMP_FREG1), MOVABLE_INS);
1318
1319 /* Store the integer value from a VFP register. */
1320 return emit_op_mem2(compiler, flags ? DOUBLE_DATA : SINGLE_DATA, TMP_FREG1, dst, dstw, 0, 0);
1321
1322 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1323 # undef is_long
1324 #endif
1325 }
1326
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)1327 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_f64_from_sw(struct sljit_compiler *compiler, sljit_s32 op,
1328 sljit_s32 dst, sljit_sw dstw,
1329 sljit_s32 src, sljit_sw srcw)
1330 {
1331 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1332 # define flags 0
1333 #else
1334 sljit_s32 flags = (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_SW) << 21;
1335 #endif
1336
1337 sljit_s32 dst_r = FAST_IS_REG(dst) ? (dst << 1) : TMP_FREG1;
1338
1339 if (FAST_IS_REG(src))
1340 FAIL_IF(push_inst(compiler, MTC1 | flags | T(src) | FS(TMP_FREG1), MOVABLE_INS));
1341 else if (src & SLJIT_MEM) {
1342 /* Load the integer value into a VFP register. */
1343 FAIL_IF(emit_op_mem2(compiler, ((flags) ? DOUBLE_DATA : SINGLE_DATA) | LOAD_DATA, TMP_FREG1, src, srcw, dst, dstw));
1344 }
1345 else {
1346 #if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
1347 if (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_S32)
1348 srcw = (sljit_s32)srcw;
1349 #endif
1350 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), srcw));
1351 FAIL_IF(push_inst(compiler, MTC1 | flags | T(TMP_REG1) | FS(TMP_FREG1), MOVABLE_INS));
1352 }
1353
1354 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));
1355
1356 if (dst & SLJIT_MEM)
1357 return emit_op_mem2(compiler, FLOAT_DATA(op), TMP_FREG1, dst, dstw, 0, 0);
1358 return SLJIT_SUCCESS;
1359
1360 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1361 # undef flags
1362 #endif
1363 }
1364
sljit_emit_fop1_cmp(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 src1,sljit_sw src1w,sljit_s32 src2,sljit_sw src2w)1365 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_cmp(struct sljit_compiler *compiler, sljit_s32 op,
1366 sljit_s32 src1, sljit_sw src1w,
1367 sljit_s32 src2, sljit_sw src2w)
1368 {
1369 if (src1 & SLJIT_MEM) {
1370 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w, src2, src2w));
1371 src1 = TMP_FREG1;
1372 }
1373 else
1374 src1 <<= 1;
1375
1376 if (src2 & SLJIT_MEM) {
1377 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w, 0, 0));
1378 src2 = TMP_FREG2;
1379 }
1380 else
1381 src2 <<= 1;
1382
1383 /* src2 and src1 are swapped. */
1384 if (op & SLJIT_SET_E) {
1385 FAIL_IF(push_inst(compiler, C_UEQ_S | FMT(op) | FT(src2) | FS(src1), UNMOVABLE_INS));
1386 FAIL_IF(push_inst(compiler, CFC1 | TA(EQUAL_FLAG) | DA(FCSR_REG), EQUAL_FLAG));
1387 FAIL_IF(push_inst(compiler, SRL | TA(EQUAL_FLAG) | DA(EQUAL_FLAG) | SH_IMM(23), EQUAL_FLAG));
1388 FAIL_IF(push_inst(compiler, ANDI | SA(EQUAL_FLAG) | TA(EQUAL_FLAG) | IMM(1), EQUAL_FLAG));
1389 }
1390 if (op & SLJIT_SET_S) {
1391 /* Mixing the instructions for the two checks. */
1392 FAIL_IF(push_inst(compiler, C_ULT_S | FMT(op) | FT(src2) | FS(src1), UNMOVABLE_INS));
1393 FAIL_IF(push_inst(compiler, CFC1 | TA(ULESS_FLAG) | DA(FCSR_REG), ULESS_FLAG));
1394 FAIL_IF(push_inst(compiler, C_ULT_S | FMT(op) | FT(src1) | FS(src2), UNMOVABLE_INS));
1395 FAIL_IF(push_inst(compiler, SRL | TA(ULESS_FLAG) | DA(ULESS_FLAG) | SH_IMM(23), ULESS_FLAG));
1396 FAIL_IF(push_inst(compiler, ANDI | SA(ULESS_FLAG) | TA(ULESS_FLAG) | IMM(1), ULESS_FLAG));
1397 FAIL_IF(push_inst(compiler, CFC1 | TA(UGREATER_FLAG) | DA(FCSR_REG), UGREATER_FLAG));
1398 FAIL_IF(push_inst(compiler, SRL | TA(UGREATER_FLAG) | DA(UGREATER_FLAG) | SH_IMM(23), UGREATER_FLAG));
1399 FAIL_IF(push_inst(compiler, ANDI | SA(UGREATER_FLAG) | TA(UGREATER_FLAG) | IMM(1), UGREATER_FLAG));
1400 }
1401 return push_inst(compiler, C_UN_S | FMT(op) | FT(src2) | FS(src1), FCSR_FCC);
1402 }
1403
sljit_emit_fop1(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 dst,sljit_sw dstw,sljit_s32 src,sljit_sw srcw)1404 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop1(struct sljit_compiler *compiler, sljit_s32 op,
1405 sljit_s32 dst, sljit_sw dstw,
1406 sljit_s32 src, sljit_sw srcw)
1407 {
1408 sljit_s32 dst_r;
1409
1410 CHECK_ERROR();
1411 compiler->cache_arg = 0;
1412 compiler->cache_argw = 0;
1413
1414 SLJIT_COMPILE_ASSERT((SLJIT_F32_OP == 0x100) && !(DOUBLE_DATA & 0x2), float_transfer_bit_error);
1415 SELECT_FOP1_OPERATION_WITH_CHECKS(compiler, op, dst, dstw, src, srcw);
1416
1417 if (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_F32)
1418 op ^= SLJIT_F32_OP;
1419
1420 dst_r = FAST_IS_REG(dst) ? (dst << 1) : TMP_FREG1;
1421
1422 if (src & SLJIT_MEM) {
1423 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op) | LOAD_DATA, dst_r, src, srcw, dst, dstw));
1424 src = dst_r;
1425 }
1426 else
1427 src <<= 1;
1428
1429 switch (GET_OPCODE(op)) {
1430 case SLJIT_MOV_F64:
1431 if (src != dst_r) {
1432 if (dst_r != TMP_FREG1)
1433 FAIL_IF(push_inst(compiler, MOV_S | FMT(op) | FS(src) | FD(dst_r), MOVABLE_INS));
1434 else
1435 dst_r = src;
1436 }
1437 break;
1438 case SLJIT_NEG_F64:
1439 FAIL_IF(push_inst(compiler, NEG_S | FMT(op) | FS(src) | FD(dst_r), MOVABLE_INS));
1440 break;
1441 case SLJIT_ABS_F64:
1442 FAIL_IF(push_inst(compiler, ABS_S | FMT(op) | FS(src) | FD(dst_r), MOVABLE_INS));
1443 break;
1444 case SLJIT_CONV_F64_FROM_F32:
1445 FAIL_IF(push_inst(compiler, CVT_S_S | ((op & SLJIT_F32_OP) ? 1 : (1 << 21)) | FS(src) | FD(dst_r), MOVABLE_INS));
1446 op ^= SLJIT_F32_OP;
1447 break;
1448 }
1449
1450 if (dst & SLJIT_MEM)
1451 return emit_op_mem2(compiler, FLOAT_DATA(op), dst_r, dst, dstw, 0, 0);
1452 return SLJIT_SUCCESS;
1453 }
1454
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)1455 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop2(struct sljit_compiler *compiler, sljit_s32 op,
1456 sljit_s32 dst, sljit_sw dstw,
1457 sljit_s32 src1, sljit_sw src1w,
1458 sljit_s32 src2, sljit_sw src2w)
1459 {
1460 sljit_s32 dst_r, flags = 0;
1461
1462 CHECK_ERROR();
1463 CHECK(check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w));
1464 ADJUST_LOCAL_OFFSET(dst, dstw);
1465 ADJUST_LOCAL_OFFSET(src1, src1w);
1466 ADJUST_LOCAL_OFFSET(src2, src2w);
1467
1468 compiler->cache_arg = 0;
1469 compiler->cache_argw = 0;
1470
1471 dst_r = FAST_IS_REG(dst) ? (dst << 1) : TMP_FREG2;
1472
1473 if (src1 & SLJIT_MEM) {
1474 if (getput_arg_fast(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w)) {
1475 FAIL_IF(compiler->error);
1476 src1 = TMP_FREG1;
1477 } else
1478 flags |= SLOW_SRC1;
1479 }
1480 else
1481 src1 <<= 1;
1482
1483 if (src2 & SLJIT_MEM) {
1484 if (getput_arg_fast(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w)) {
1485 FAIL_IF(compiler->error);
1486 src2 = TMP_FREG2;
1487 } else
1488 flags |= SLOW_SRC2;
1489 }
1490 else
1491 src2 <<= 1;
1492
1493 if ((flags & (SLOW_SRC1 | SLOW_SRC2)) == (SLOW_SRC1 | SLOW_SRC2)) {
1494 if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
1495 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w, src1, src1w));
1496 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w, dst, dstw));
1497 }
1498 else {
1499 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w, src2, src2w));
1500 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w, dst, dstw));
1501 }
1502 }
1503 else if (flags & SLOW_SRC1)
1504 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w, dst, dstw));
1505 else if (flags & SLOW_SRC2)
1506 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w, dst, dstw));
1507
1508 if (flags & SLOW_SRC1)
1509 src1 = TMP_FREG1;
1510 if (flags & SLOW_SRC2)
1511 src2 = TMP_FREG2;
1512
1513 switch (GET_OPCODE(op)) {
1514 case SLJIT_ADD_F64:
1515 FAIL_IF(push_inst(compiler, ADD_S | FMT(op) | FT(src2) | FS(src1) | FD(dst_r), MOVABLE_INS));
1516 break;
1517
1518 case SLJIT_SUB_F64:
1519 FAIL_IF(push_inst(compiler, SUB_S | FMT(op) | FT(src2) | FS(src1) | FD(dst_r), MOVABLE_INS));
1520 break;
1521
1522 case SLJIT_MUL_F64:
1523 FAIL_IF(push_inst(compiler, MUL_S | FMT(op) | FT(src2) | FS(src1) | FD(dst_r), MOVABLE_INS));
1524 break;
1525
1526 case SLJIT_DIV_F64:
1527 FAIL_IF(push_inst(compiler, DIV_S | FMT(op) | FT(src2) | FS(src1) | FD(dst_r), MOVABLE_INS));
1528 break;
1529 }
1530
1531 if (dst_r == TMP_FREG2)
1532 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op), TMP_FREG2, dst, dstw, 0, 0));
1533
1534 return SLJIT_SUCCESS;
1535 }
1536
1537 /* --------------------------------------------------------------------- */
1538 /* Other instructions */
1539 /* --------------------------------------------------------------------- */
1540
sljit_emit_fast_enter(struct sljit_compiler * compiler,sljit_s32 dst,sljit_sw dstw)1541 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw)
1542 {
1543 CHECK_ERROR();
1544 CHECK(check_sljit_emit_fast_enter(compiler, dst, dstw));
1545 ADJUST_LOCAL_OFFSET(dst, dstw);
1546
1547 /* For UNUSED dst. Uncommon, but possible. */
1548 if (dst == SLJIT_UNUSED)
1549 return SLJIT_SUCCESS;
1550
1551 if (FAST_IS_REG(dst))
1552 return push_inst(compiler, ADDU_W | SA(RETURN_ADDR_REG) | TA(0) | D(dst), DR(dst));
1553
1554 /* Memory. */
1555 return emit_op_mem(compiler, WORD_DATA, RETURN_ADDR_REG, dst, dstw);
1556 }
1557
sljit_emit_fast_return(struct sljit_compiler * compiler,sljit_s32 src,sljit_sw srcw)1558 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_return(struct sljit_compiler *compiler, sljit_s32 src, sljit_sw srcw)
1559 {
1560 CHECK_ERROR();
1561 CHECK(check_sljit_emit_fast_return(compiler, src, srcw));
1562 ADJUST_LOCAL_OFFSET(src, srcw);
1563
1564 if (FAST_IS_REG(src))
1565 FAIL_IF(push_inst(compiler, ADDU_W | S(src) | TA(0) | DA(RETURN_ADDR_REG), RETURN_ADDR_REG));
1566 else if (src & SLJIT_MEM)
1567 FAIL_IF(emit_op_mem(compiler, WORD_DATA | LOAD_DATA, RETURN_ADDR_REG, src, srcw));
1568 else if (src & SLJIT_IMM)
1569 FAIL_IF(load_immediate(compiler, RETURN_ADDR_REG, srcw));
1570
1571 FAIL_IF(push_inst(compiler, JR | SA(RETURN_ADDR_REG), UNMOVABLE_INS));
1572 return push_inst(compiler, NOP, UNMOVABLE_INS);
1573 }
1574
1575 /* --------------------------------------------------------------------- */
1576 /* Conditional instructions */
1577 /* --------------------------------------------------------------------- */
1578
sljit_emit_label(struct sljit_compiler * compiler)1579 SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler)
1580 {
1581 struct sljit_label *label;
1582
1583 CHECK_ERROR_PTR();
1584 CHECK_PTR(check_sljit_emit_label(compiler));
1585
1586 if (compiler->last_label && compiler->last_label->size == compiler->size)
1587 return compiler->last_label;
1588
1589 label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label));
1590 PTR_FAIL_IF(!label);
1591 set_label(label, compiler);
1592 compiler->delay_slot = UNMOVABLE_INS;
1593 return label;
1594 }
1595
1596 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1597 #define JUMP_LENGTH 4
1598 #else
1599 #define JUMP_LENGTH 8
1600 #endif
1601
1602 #define BR_Z(src) \
1603 inst = BEQ | SA(src) | TA(0) | JUMP_LENGTH; \
1604 flags = IS_BIT26_COND; \
1605 delay_check = src;
1606
1607 #define BR_NZ(src) \
1608 inst = BNE | SA(src) | TA(0) | JUMP_LENGTH; \
1609 flags = IS_BIT26_COND; \
1610 delay_check = src;
1611
1612 #define BR_T() \
1613 inst = BC1T | JUMP_LENGTH; \
1614 flags = IS_BIT16_COND; \
1615 delay_check = FCSR_FCC;
1616
1617 #define BR_F() \
1618 inst = BC1F | JUMP_LENGTH; \
1619 flags = IS_BIT16_COND; \
1620 delay_check = FCSR_FCC;
1621
sljit_emit_jump(struct sljit_compiler * compiler,sljit_s32 type)1622 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, sljit_s32 type)
1623 {
1624 struct sljit_jump *jump;
1625 sljit_ins inst;
1626 sljit_s32 flags = 0;
1627 sljit_s32 delay_check = UNMOVABLE_INS;
1628
1629 CHECK_ERROR_PTR();
1630 CHECK_PTR(check_sljit_emit_jump(compiler, type));
1631
1632 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1633 PTR_FAIL_IF(!jump);
1634 set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1635 type &= 0xff;
1636
1637 switch (type) {
1638 case SLJIT_EQUAL:
1639 case SLJIT_NOT_EQUAL_F64:
1640 BR_NZ(EQUAL_FLAG);
1641 break;
1642 case SLJIT_NOT_EQUAL:
1643 case SLJIT_EQUAL_F64:
1644 BR_Z(EQUAL_FLAG);
1645 break;
1646 case SLJIT_LESS:
1647 case SLJIT_LESS_F64:
1648 BR_Z(ULESS_FLAG);
1649 break;
1650 case SLJIT_GREATER_EQUAL:
1651 case SLJIT_GREATER_EQUAL_F64:
1652 BR_NZ(ULESS_FLAG);
1653 break;
1654 case SLJIT_GREATER:
1655 case SLJIT_GREATER_F64:
1656 BR_Z(UGREATER_FLAG);
1657 break;
1658 case SLJIT_LESS_EQUAL:
1659 case SLJIT_LESS_EQUAL_F64:
1660 BR_NZ(UGREATER_FLAG);
1661 break;
1662 case SLJIT_SIG_LESS:
1663 BR_Z(LESS_FLAG);
1664 break;
1665 case SLJIT_SIG_GREATER_EQUAL:
1666 BR_NZ(LESS_FLAG);
1667 break;
1668 case SLJIT_SIG_GREATER:
1669 BR_Z(GREATER_FLAG);
1670 break;
1671 case SLJIT_SIG_LESS_EQUAL:
1672 BR_NZ(GREATER_FLAG);
1673 break;
1674 case SLJIT_OVERFLOW:
1675 case SLJIT_MUL_OVERFLOW:
1676 BR_Z(OVERFLOW_FLAG);
1677 break;
1678 case SLJIT_NOT_OVERFLOW:
1679 case SLJIT_MUL_NOT_OVERFLOW:
1680 BR_NZ(OVERFLOW_FLAG);
1681 break;
1682 case SLJIT_UNORDERED_F64:
1683 BR_F();
1684 break;
1685 case SLJIT_ORDERED_F64:
1686 BR_T();
1687 break;
1688 default:
1689 /* Not conditional branch. */
1690 inst = 0;
1691 break;
1692 }
1693
1694 jump->flags |= flags;
1695 if (compiler->delay_slot == MOVABLE_INS || (compiler->delay_slot != UNMOVABLE_INS && compiler->delay_slot != delay_check))
1696 jump->flags |= IS_MOVABLE;
1697
1698 if (inst)
1699 PTR_FAIL_IF(push_inst(compiler, inst, UNMOVABLE_INS));
1700
1701 PTR_FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1702 if (type <= SLJIT_JUMP) {
1703 PTR_FAIL_IF(push_inst(compiler, JR | S(TMP_REG2), UNMOVABLE_INS));
1704 jump->addr = compiler->size;
1705 PTR_FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1706 } else {
1707 SLJIT_ASSERT(DR(PIC_ADDR_REG) == 25 && PIC_ADDR_REG == TMP_REG2);
1708 /* Cannot be optimized out if type is >= CALL0. */
1709 jump->flags |= IS_JAL | (type >= SLJIT_CALL0 ? IS_CALL : 0);
1710 PTR_FAIL_IF(push_inst(compiler, JALR | S(TMP_REG2) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
1711 jump->addr = compiler->size;
1712 /* A NOP if type < CALL1. */
1713 PTR_FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_R0) | TA(0) | DA(4), UNMOVABLE_INS));
1714 }
1715 return jump;
1716 }
1717
1718 #define RESOLVE_IMM1() \
1719 if (src1 & SLJIT_IMM) { \
1720 if (src1w) { \
1721 PTR_FAIL_IF(load_immediate(compiler, DR(TMP_REG1), src1w)); \
1722 src1 = TMP_REG1; \
1723 } \
1724 else \
1725 src1 = 0; \
1726 }
1727
1728 #define RESOLVE_IMM2() \
1729 if (src2 & SLJIT_IMM) { \
1730 if (src2w) { \
1731 PTR_FAIL_IF(load_immediate(compiler, DR(TMP_REG2), src2w)); \
1732 src2 = TMP_REG2; \
1733 } \
1734 else \
1735 src2 = 0; \
1736 }
1737
sljit_emit_cmp(struct sljit_compiler * compiler,sljit_s32 type,sljit_s32 src1,sljit_sw src1w,sljit_s32 src2,sljit_sw src2w)1738 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_cmp(struct sljit_compiler *compiler, sljit_s32 type,
1739 sljit_s32 src1, sljit_sw src1w,
1740 sljit_s32 src2, sljit_sw src2w)
1741 {
1742 struct sljit_jump *jump;
1743 sljit_s32 flags;
1744 sljit_ins inst;
1745
1746 CHECK_ERROR_PTR();
1747 CHECK_PTR(check_sljit_emit_cmp(compiler, type, src1, src1w, src2, src2w));
1748 ADJUST_LOCAL_OFFSET(src1, src1w);
1749 ADJUST_LOCAL_OFFSET(src2, src2w);
1750
1751 compiler->cache_arg = 0;
1752 compiler->cache_argw = 0;
1753 flags = ((type & SLJIT_I32_OP) ? INT_DATA : WORD_DATA) | LOAD_DATA;
1754 if (src1 & SLJIT_MEM) {
1755 PTR_FAIL_IF(emit_op_mem2(compiler, flags, DR(TMP_REG1), src1, src1w, src2, src2w));
1756 src1 = TMP_REG1;
1757 }
1758 if (src2 & SLJIT_MEM) {
1759 PTR_FAIL_IF(emit_op_mem2(compiler, flags, DR(TMP_REG2), src2, src2w, 0, 0));
1760 src2 = TMP_REG2;
1761 }
1762
1763 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1764 PTR_FAIL_IF(!jump);
1765 set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1766 type &= 0xff;
1767
1768 if (type <= SLJIT_NOT_EQUAL) {
1769 RESOLVE_IMM1();
1770 RESOLVE_IMM2();
1771 jump->flags |= IS_BIT26_COND;
1772 if (compiler->delay_slot == MOVABLE_INS || (compiler->delay_slot != UNMOVABLE_INS && compiler->delay_slot != DR(src1) && compiler->delay_slot != DR(src2)))
1773 jump->flags |= IS_MOVABLE;
1774 PTR_FAIL_IF(push_inst(compiler, (type == SLJIT_EQUAL ? BNE : BEQ) | S(src1) | T(src2) | JUMP_LENGTH, UNMOVABLE_INS));
1775 }
1776 else if (type >= SLJIT_SIG_LESS && (((src1 & SLJIT_IMM) && (src1w == 0)) || ((src2 & SLJIT_IMM) && (src2w == 0)))) {
1777 inst = NOP;
1778 if ((src1 & SLJIT_IMM) && (src1w == 0)) {
1779 RESOLVE_IMM2();
1780 switch (type) {
1781 case SLJIT_SIG_LESS:
1782 inst = BLEZ;
1783 jump->flags |= IS_BIT26_COND;
1784 break;
1785 case SLJIT_SIG_GREATER_EQUAL:
1786 inst = BGTZ;
1787 jump->flags |= IS_BIT26_COND;
1788 break;
1789 case SLJIT_SIG_GREATER:
1790 inst = BGEZ;
1791 jump->flags |= IS_BIT16_COND;
1792 break;
1793 case SLJIT_SIG_LESS_EQUAL:
1794 inst = BLTZ;
1795 jump->flags |= IS_BIT16_COND;
1796 break;
1797 }
1798 src1 = src2;
1799 }
1800 else {
1801 RESOLVE_IMM1();
1802 switch (type) {
1803 case SLJIT_SIG_LESS:
1804 inst = BGEZ;
1805 jump->flags |= IS_BIT16_COND;
1806 break;
1807 case SLJIT_SIG_GREATER_EQUAL:
1808 inst = BLTZ;
1809 jump->flags |= IS_BIT16_COND;
1810 break;
1811 case SLJIT_SIG_GREATER:
1812 inst = BLEZ;
1813 jump->flags |= IS_BIT26_COND;
1814 break;
1815 case SLJIT_SIG_LESS_EQUAL:
1816 inst = BGTZ;
1817 jump->flags |= IS_BIT26_COND;
1818 break;
1819 }
1820 }
1821 PTR_FAIL_IF(push_inst(compiler, inst | S(src1) | JUMP_LENGTH, UNMOVABLE_INS));
1822 }
1823 else {
1824 if (type == SLJIT_LESS || type == SLJIT_GREATER_EQUAL || type == SLJIT_SIG_LESS || type == SLJIT_SIG_GREATER_EQUAL) {
1825 RESOLVE_IMM1();
1826 if ((src2 & SLJIT_IMM) && src2w <= SIMM_MAX && src2w >= SIMM_MIN)
1827 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_LESS_EQUAL ? SLTIU : SLTI) | S(src1) | T(TMP_REG1) | IMM(src2w), DR(TMP_REG1)));
1828 else {
1829 RESOLVE_IMM2();
1830 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_LESS_EQUAL ? SLTU : SLT) | S(src1) | T(src2) | D(TMP_REG1), DR(TMP_REG1)));
1831 }
1832 type = (type == SLJIT_LESS || type == SLJIT_SIG_LESS) ? SLJIT_NOT_EQUAL : SLJIT_EQUAL;
1833 }
1834 else {
1835 RESOLVE_IMM2();
1836 if ((src1 & SLJIT_IMM) && src1w <= SIMM_MAX && src1w >= SIMM_MIN)
1837 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_LESS_EQUAL ? SLTIU : SLTI) | S(src2) | T(TMP_REG1) | IMM(src1w), DR(TMP_REG1)));
1838 else {
1839 RESOLVE_IMM1();
1840 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_LESS_EQUAL ? SLTU : SLT) | S(src2) | T(src1) | D(TMP_REG1), DR(TMP_REG1)));
1841 }
1842 type = (type == SLJIT_GREATER || type == SLJIT_SIG_GREATER) ? SLJIT_NOT_EQUAL : SLJIT_EQUAL;
1843 }
1844
1845 jump->flags |= IS_BIT26_COND;
1846 PTR_FAIL_IF(push_inst(compiler, (type == SLJIT_EQUAL ? BNE : BEQ) | S(TMP_REG1) | TA(0) | JUMP_LENGTH, UNMOVABLE_INS));
1847 }
1848
1849 PTR_FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1850 PTR_FAIL_IF(push_inst(compiler, JR | S(TMP_REG2), UNMOVABLE_INS));
1851 jump->addr = compiler->size;
1852 PTR_FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1853 return jump;
1854 }
1855
1856 #undef RESOLVE_IMM1
1857 #undef RESOLVE_IMM2
1858
sljit_emit_fcmp(struct sljit_compiler * compiler,sljit_s32 type,sljit_s32 src1,sljit_sw src1w,sljit_s32 src2,sljit_sw src2w)1859 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_fcmp(struct sljit_compiler *compiler, sljit_s32 type,
1860 sljit_s32 src1, sljit_sw src1w,
1861 sljit_s32 src2, sljit_sw src2w)
1862 {
1863 struct sljit_jump *jump;
1864 sljit_ins inst;
1865 sljit_s32 if_true;
1866
1867 CHECK_ERROR_PTR();
1868 CHECK_PTR(check_sljit_emit_fcmp(compiler, type, src1, src1w, src2, src2w));
1869
1870 compiler->cache_arg = 0;
1871 compiler->cache_argw = 0;
1872
1873 if (src1 & SLJIT_MEM) {
1874 PTR_FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(type) | LOAD_DATA, TMP_FREG1, src1, src1w, src2, src2w));
1875 src1 = TMP_FREG1;
1876 }
1877 else
1878 src1 <<= 1;
1879
1880 if (src2 & SLJIT_MEM) {
1881 PTR_FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(type) | LOAD_DATA, TMP_FREG2, src2, src2w, 0, 0));
1882 src2 = TMP_FREG2;
1883 }
1884 else
1885 src2 <<= 1;
1886
1887 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1888 PTR_FAIL_IF(!jump);
1889 set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1890 jump->flags |= IS_BIT16_COND;
1891
1892 switch (type & 0xff) {
1893 case SLJIT_EQUAL_F64:
1894 inst = C_UEQ_S;
1895 if_true = 1;
1896 break;
1897 case SLJIT_NOT_EQUAL_F64:
1898 inst = C_UEQ_S;
1899 if_true = 0;
1900 break;
1901 case SLJIT_LESS_F64:
1902 inst = C_ULT_S;
1903 if_true = 1;
1904 break;
1905 case SLJIT_GREATER_EQUAL_F64:
1906 inst = C_ULT_S;
1907 if_true = 0;
1908 break;
1909 case SLJIT_GREATER_F64:
1910 inst = C_ULE_S;
1911 if_true = 0;
1912 break;
1913 case SLJIT_LESS_EQUAL_F64:
1914 inst = C_ULE_S;
1915 if_true = 1;
1916 break;
1917 case SLJIT_UNORDERED_F64:
1918 inst = C_UN_S;
1919 if_true = 1;
1920 break;
1921 default: /* Make compilers happy. */
1922 SLJIT_ASSERT_STOP();
1923 case SLJIT_ORDERED_F64:
1924 inst = C_UN_S;
1925 if_true = 0;
1926 break;
1927 }
1928
1929 PTR_FAIL_IF(push_inst(compiler, inst | FMT(type) | FT(src2) | FS(src1), UNMOVABLE_INS));
1930 /* Intentionally the other opcode. */
1931 PTR_FAIL_IF(push_inst(compiler, (if_true ? BC1F : BC1T) | JUMP_LENGTH, UNMOVABLE_INS));
1932 PTR_FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1933 PTR_FAIL_IF(push_inst(compiler, JR | S(TMP_REG2), UNMOVABLE_INS));
1934 jump->addr = compiler->size;
1935 PTR_FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1936 return jump;
1937 }
1938
1939 #undef JUMP_LENGTH
1940 #undef BR_Z
1941 #undef BR_NZ
1942 #undef BR_T
1943 #undef BR_F
1944
1945 #undef FLOAT_DATA
1946 #undef FMT
1947
sljit_emit_ijump(struct sljit_compiler * compiler,sljit_s32 type,sljit_s32 src,sljit_sw srcw)1948 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_ijump(struct sljit_compiler *compiler, sljit_s32 type, sljit_s32 src, sljit_sw srcw)
1949 {
1950 sljit_s32 src_r = TMP_REG2;
1951 struct sljit_jump *jump = NULL;
1952
1953 CHECK_ERROR();
1954 CHECK(check_sljit_emit_ijump(compiler, type, src, srcw));
1955 ADJUST_LOCAL_OFFSET(src, srcw);
1956
1957 if (FAST_IS_REG(src)) {
1958 if (DR(src) != 4)
1959 src_r = src;
1960 else
1961 FAIL_IF(push_inst(compiler, ADDU_W | S(src) | TA(0) | D(TMP_REG2), DR(TMP_REG2)));
1962 }
1963
1964 if (type >= SLJIT_CALL0) {
1965 SLJIT_ASSERT(DR(PIC_ADDR_REG) == 25 && PIC_ADDR_REG == TMP_REG2);
1966 if (src & (SLJIT_IMM | SLJIT_MEM)) {
1967 if (src & SLJIT_IMM)
1968 FAIL_IF(load_immediate(compiler, DR(PIC_ADDR_REG), srcw));
1969 else {
1970 SLJIT_ASSERT(src_r == TMP_REG2 && (src & SLJIT_MEM));
1971 FAIL_IF(emit_op(compiler, SLJIT_MOV, WORD_DATA, TMP_REG2, 0, TMP_REG1, 0, src, srcw));
1972 }
1973 FAIL_IF(push_inst(compiler, JALR | S(PIC_ADDR_REG) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
1974 /* We need an extra instruction in any case. */
1975 return push_inst(compiler, ADDU_W | S(SLJIT_R0) | TA(0) | DA(4), UNMOVABLE_INS);
1976 }
1977
1978 /* Register input. */
1979 if (type >= SLJIT_CALL1)
1980 FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_R0) | TA(0) | DA(4), 4));
1981 FAIL_IF(push_inst(compiler, JALR | S(src_r) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
1982 return push_inst(compiler, ADDU_W | S(src_r) | TA(0) | D(PIC_ADDR_REG), UNMOVABLE_INS);
1983 }
1984
1985 if (src & SLJIT_IMM) {
1986 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1987 FAIL_IF(!jump);
1988 set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_JAL : 0));
1989 jump->u.target = srcw;
1990
1991 if (compiler->delay_slot != UNMOVABLE_INS)
1992 jump->flags |= IS_MOVABLE;
1993
1994 FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1995 }
1996 else if (src & SLJIT_MEM)
1997 FAIL_IF(emit_op(compiler, SLJIT_MOV, WORD_DATA, TMP_REG2, 0, TMP_REG1, 0, src, srcw));
1998
1999 FAIL_IF(push_inst(compiler, JR | S(src_r), UNMOVABLE_INS));
2000 if (jump)
2001 jump->addr = compiler->size;
2002 FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
2003 return SLJIT_SUCCESS;
2004 }
2005
sljit_emit_op_flags(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 dst,sljit_sw dstw,sljit_s32 src,sljit_sw srcw,sljit_s32 type)2006 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_flags(struct sljit_compiler *compiler, sljit_s32 op,
2007 sljit_s32 dst, sljit_sw dstw,
2008 sljit_s32 src, sljit_sw srcw,
2009 sljit_s32 type)
2010 {
2011 sljit_s32 sugg_dst_ar, dst_ar;
2012 sljit_s32 flags = GET_ALL_FLAGS(op);
2013 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
2014 # define mem_type WORD_DATA
2015 #else
2016 sljit_s32 mem_type = (op & SLJIT_I32_OP) ? (INT_DATA | SIGNED_DATA) : WORD_DATA;
2017 #endif
2018
2019 CHECK_ERROR();
2020 CHECK(check_sljit_emit_op_flags(compiler, op, dst, dstw, src, srcw, type));
2021 ADJUST_LOCAL_OFFSET(dst, dstw);
2022
2023 if (dst == SLJIT_UNUSED)
2024 return SLJIT_SUCCESS;
2025
2026 op = GET_OPCODE(op);
2027 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
2028 if (op == SLJIT_MOV_S32 || op == SLJIT_MOV_U32)
2029 mem_type = INT_DATA | SIGNED_DATA;
2030 #endif
2031 sugg_dst_ar = DR((op < SLJIT_ADD && FAST_IS_REG(dst)) ? dst : TMP_REG2);
2032
2033 compiler->cache_arg = 0;
2034 compiler->cache_argw = 0;
2035 if (op >= SLJIT_ADD && (src & SLJIT_MEM)) {
2036 ADJUST_LOCAL_OFFSET(src, srcw);
2037 FAIL_IF(emit_op_mem2(compiler, mem_type | LOAD_DATA, DR(TMP_REG1), src, srcw, dst, dstw));
2038 src = TMP_REG1;
2039 srcw = 0;
2040 }
2041
2042 switch (type & 0xff) {
2043 case SLJIT_EQUAL:
2044 case SLJIT_NOT_EQUAL:
2045 FAIL_IF(push_inst(compiler, SLTIU | SA(EQUAL_FLAG) | TA(sugg_dst_ar) | IMM(1), sugg_dst_ar));
2046 dst_ar = sugg_dst_ar;
2047 break;
2048 case SLJIT_LESS:
2049 case SLJIT_GREATER_EQUAL:
2050 case SLJIT_LESS_F64:
2051 case SLJIT_GREATER_EQUAL_F64:
2052 dst_ar = ULESS_FLAG;
2053 break;
2054 case SLJIT_GREATER:
2055 case SLJIT_LESS_EQUAL:
2056 case SLJIT_GREATER_F64:
2057 case SLJIT_LESS_EQUAL_F64:
2058 dst_ar = UGREATER_FLAG;
2059 break;
2060 case SLJIT_SIG_LESS:
2061 case SLJIT_SIG_GREATER_EQUAL:
2062 dst_ar = LESS_FLAG;
2063 break;
2064 case SLJIT_SIG_GREATER:
2065 case SLJIT_SIG_LESS_EQUAL:
2066 dst_ar = GREATER_FLAG;
2067 break;
2068 case SLJIT_OVERFLOW:
2069 case SLJIT_NOT_OVERFLOW:
2070 dst_ar = OVERFLOW_FLAG;
2071 break;
2072 case SLJIT_MUL_OVERFLOW:
2073 case SLJIT_MUL_NOT_OVERFLOW:
2074 FAIL_IF(push_inst(compiler, SLTIU | SA(OVERFLOW_FLAG) | TA(sugg_dst_ar) | IMM(1), sugg_dst_ar));
2075 dst_ar = sugg_dst_ar;
2076 type ^= 0x1; /* Flip type bit for the XORI below. */
2077 break;
2078 case SLJIT_EQUAL_F64:
2079 case SLJIT_NOT_EQUAL_F64:
2080 dst_ar = EQUAL_FLAG;
2081 break;
2082
2083 case SLJIT_UNORDERED_F64:
2084 case SLJIT_ORDERED_F64:
2085 FAIL_IF(push_inst(compiler, CFC1 | TA(sugg_dst_ar) | DA(FCSR_REG), sugg_dst_ar));
2086 FAIL_IF(push_inst(compiler, SRL | TA(sugg_dst_ar) | DA(sugg_dst_ar) | SH_IMM(23), sugg_dst_ar));
2087 FAIL_IF(push_inst(compiler, ANDI | SA(sugg_dst_ar) | TA(sugg_dst_ar) | IMM(1), sugg_dst_ar));
2088 dst_ar = sugg_dst_ar;
2089 break;
2090
2091 default:
2092 SLJIT_ASSERT_STOP();
2093 dst_ar = sugg_dst_ar;
2094 break;
2095 }
2096
2097 if (type & 0x1) {
2098 FAIL_IF(push_inst(compiler, XORI | SA(dst_ar) | TA(sugg_dst_ar) | IMM(1), sugg_dst_ar));
2099 dst_ar = sugg_dst_ar;
2100 }
2101
2102 if (op >= SLJIT_ADD) {
2103 if (DR(TMP_REG2) != dst_ar)
2104 FAIL_IF(push_inst(compiler, ADDU_W | SA(dst_ar) | TA(0) | D(TMP_REG2), DR(TMP_REG2)));
2105 return emit_op(compiler, op | flags, mem_type | CUMULATIVE_OP | LOGICAL_OP | IMM_OP | ALT_KEEP_CACHE, dst, dstw, src, srcw, TMP_REG2, 0);
2106 }
2107
2108 if (dst & SLJIT_MEM)
2109 return emit_op_mem(compiler, mem_type, dst_ar, dst, dstw);
2110
2111 if (sugg_dst_ar != dst_ar)
2112 return push_inst(compiler, ADDU_W | SA(dst_ar) | TA(0) | DA(sugg_dst_ar), sugg_dst_ar);
2113 return SLJIT_SUCCESS;
2114
2115 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
2116 # undef mem_type
2117 #endif
2118 }
2119
sljit_emit_const(struct sljit_compiler * compiler,sljit_s32 dst,sljit_sw dstw,sljit_sw init_value)2120 SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw, sljit_sw init_value)
2121 {
2122 struct sljit_const *const_;
2123 sljit_s32 reg;
2124
2125 CHECK_ERROR_PTR();
2126 CHECK_PTR(check_sljit_emit_const(compiler, dst, dstw, init_value));
2127 ADJUST_LOCAL_OFFSET(dst, dstw);
2128
2129 const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const));
2130 PTR_FAIL_IF(!const_);
2131 set_const(const_, compiler);
2132
2133 reg = SLOW_IS_REG(dst) ? dst : TMP_REG2;
2134
2135 PTR_FAIL_IF(emit_const(compiler, reg, init_value));
2136
2137 if (dst & SLJIT_MEM)
2138 PTR_FAIL_IF(emit_op(compiler, SLJIT_MOV, WORD_DATA, dst, dstw, TMP_REG1, 0, TMP_REG2, 0));
2139 return const_;
2140 }
2141