/[pcre]/code/branches/pcre16/sljit/sljitNativeMIPS_common.c
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Contents of /code/branches/pcre16/sljit/sljitNativeMIPS_common.c

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Revision 833 - (show annotations)
Wed Dec 28 08:38:29 2011 UTC (7 years, 9 months ago) by zherczeg
File MIME type: text/plain
File size: 56968 byte(s)
JIT compiler copyright info updated and several tests added for testing horizontal/vertical spaces
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 SLJIT_API_FUNC_ATTRIBUTE SLJIT_CONST char* sljit_get_platform_name()
28 {
29 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
30 return "mips-32";
31 #else
32 #error "mips-64 is not yet supported"
33 #endif
34 }
35
36 /* Latest MIPS architecture. */
37 /* Detect SLJIT_MIPS_32_64 */
38
39 /* Length of an instruction word
40 Both for mips-32 and mips-64 */
41 typedef sljit_ui sljit_ins;
42
43 #define TMP_REG1 (SLJIT_NO_REGISTERS + 1)
44 #define TMP_REG2 (SLJIT_NO_REGISTERS + 2)
45 #define TMP_REG3 (SLJIT_NO_REGISTERS + 3)
46 #define REAL_STACK_PTR (SLJIT_NO_REGISTERS + 4)
47
48 /* For position independent code, t9 must contain the function address. */
49 #define PIC_ADDR_REG TMP_REG2
50
51 /* TMP_EREG1 is used mainly for literal encoding on 64 bit. */
52 #define TMP_EREG1 15
53 #define TMP_EREG2 24
54 /* Floating point status register. */
55 #define FCSR_REG 31
56 /* Return address register. */
57 #define RETURN_ADDR_REG 31
58
59 /* Flags are keept in volatile registers. */
60 #define EQUAL_FLAG 7
61 /* And carry flag as well. */
62 #define ULESS_FLAG 10
63 #define UGREATER_FLAG 11
64 #define LESS_FLAG 12
65 #define GREATER_FLAG 13
66 #define OVERFLOW_FLAG 14
67
68 #define TMP_FREG1 (SLJIT_FLOAT_REG4 + 1)
69 #define TMP_FREG2 (SLJIT_FLOAT_REG4 + 2)
70
71 /* --------------------------------------------------------------------- */
72 /* Instrucion forms */
73 /* --------------------------------------------------------------------- */
74
75 #define S(s) (reg_map[s] << 21)
76 #define T(t) (reg_map[t] << 16)
77 #define D(d) (reg_map[d] << 11)
78 /* Absolute registers. */
79 #define SA(s) ((s) << 21)
80 #define TA(t) ((t) << 16)
81 #define DA(d) ((d) << 11)
82 #define FT(t) ((t) << (16 + 1))
83 #define FS(s) ((s) << (11 + 1))
84 #define FD(d) ((d) << (6 + 1))
85 #define IMM(imm) ((imm) & 0xffff)
86 #define SH_IMM(imm) ((imm & 0x1f) << 6)
87
88 #define DR(dr) (reg_map[dr])
89 #define HI(opcode) ((opcode) << 26)
90 #define LO(opcode) (opcode)
91 #define FMT_D (17 << 21)
92
93 #define ABS_D (HI(17) | FMT_D | LO(5))
94 #define ADD_D (HI(17) | FMT_D | LO(0))
95 #define ADDU (HI(0) | LO(33))
96 #define ADDIU (HI(9))
97 #define AND (HI(0) | LO(36))
98 #define ANDI (HI(12))
99 #define B (HI(4))
100 #define BAL (HI(1) | (17 << 16))
101 #define BC1F (HI(17) | (8 << 21))
102 #define BC1T (HI(17) | (8 << 21) | (1 << 16))
103 #define BEQ (HI(4))
104 #define BGEZ (HI(1) | (1 << 16))
105 #define BGTZ (HI(7))
106 #define BLEZ (HI(6))
107 #define BLTZ (HI(1) | (0 << 16))
108 #define BNE (HI(5))
109 #define BREAK (HI(0) | LO(13))
110 #define C_UN_D (HI(17) | FMT_D | LO(49))
111 #define C_UEQ_D (HI(17) | FMT_D | LO(51))
112 #define C_ULT_D (HI(17) | FMT_D | LO(53))
113 #define DIV_D (HI(17) | FMT_D | LO(3))
114 #define J (HI(2))
115 #define JAL (HI(3))
116 #define JALR (HI(0) | LO(9))
117 #define JR (HI(0) | LO(8))
118 #define LD (HI(55))
119 #define LDC1 (HI(53))
120 #define LUI (HI(15))
121 #define LW (HI(35))
122 #define NEG_D (HI(17) | FMT_D | LO(7))
123 #define MFHI (HI(0) | LO(16))
124 #define MFLO (HI(0) | LO(18))
125 #define MOV_D (HI(17) | FMT_D | LO(6))
126 #define CFC1 (HI(17) | (2 << 21))
127 #define MOVN (HI(0) | LO(11))
128 #define MOVZ (HI(0) | LO(10))
129 #define MUL_D (HI(17) | FMT_D | LO(2))
130 #define MULT (HI(0) | LO(24))
131 #define NOP (HI(0) | LO(0))
132 #define NOR (HI(0) | LO(39))
133 #define OR (HI(0) | LO(37))
134 #define ORI (HI(13))
135 #define SD (HI(63))
136 #define SDC1 (HI(61))
137 #define SLT (HI(0) | LO(42))
138 #define SLTI (HI(10))
139 #define SLTIU (HI(11))
140 #define SLTU (HI(0) | LO(43))
141 #define SLL (HI(0) | LO(0))
142 #define SLLV (HI(0) | LO(4))
143 #define SRL (HI(0) | LO(2))
144 #define SRLV (HI(0) | LO(6))
145 #define SRA (HI(0) | LO(3))
146 #define SRAV (HI(0) | LO(7))
147 #define SUB_D (HI(17) | FMT_D | LO(1))
148 #define SUBU (HI(0) | LO(35))
149 #define SW (HI(43))
150 #define XOR (HI(0) | LO(38))
151 #define XORI (HI(14))
152
153 #if (defined SLJIT_MIPS_32_64 && SLJIT_MIPS_32_64)
154 #define CLZ (HI(28) | LO(32))
155 #define MUL (HI(28) | LO(2))
156 #define SEB (HI(31) | (16 << 6) | LO(32))
157 #define SEH (HI(31) | (24 << 6) | LO(32))
158 #endif
159
160 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
161 #define ADDU_W ADDU
162 #define ADDIU_W ADDIU
163 #define SLL_W SLL
164 #define SUBU_W SUBU
165 #else
166 #define ADDU_W DADDU
167 #define ADDIU_W DADDIU
168 #define SLL_W DSLL
169 #define SUBU_W DSUBU
170 #endif
171
172 #define SIMM_MAX (0x7fff)
173 #define SIMM_MIN (-0x8000)
174 #define UIMM_MAX (0xffff)
175
176 static SLJIT_CONST sljit_ub reg_map[SLJIT_NO_REGISTERS + 6] = {
177 0, 2, 5, 6, 3, 8, 17, 18, 19, 20, 21, 16, 4, 25, 9, 29
178 };
179
180 /* dest_reg is the absolute name of the register
181 Useful for reordering instructions in the delay slot. */
182 static int push_inst(struct sljit_compiler *compiler, sljit_ins ins, int delay_slot)
183 {
184 sljit_ins *ptr = (sljit_ins*)ensure_buf(compiler, sizeof(sljit_ins));
185 FAIL_IF(!ptr);
186 *ptr = ins;
187 compiler->size++;
188 compiler->delay_slot = delay_slot;
189 return SLJIT_SUCCESS;
190 }
191
192 static SLJIT_INLINE sljit_ins invert_branch(int flags)
193 {
194 return (flags & IS_BIT26_COND) ? (1 << 26) : (1 << 16);
195 }
196
197 static SLJIT_INLINE sljit_ins* optimize_jump(struct sljit_jump *jump, sljit_ins *code_ptr, sljit_ins *code)
198 {
199 sljit_w diff;
200 sljit_uw target_addr;
201 sljit_ins *inst;
202 sljit_ins saved_inst;
203
204 if (jump->flags & SLJIT_REWRITABLE_JUMP)
205 return code_ptr;
206
207 if (jump->flags & JUMP_ADDR)
208 target_addr = jump->u.target;
209 else {
210 SLJIT_ASSERT(jump->flags & JUMP_LABEL);
211 target_addr = (sljit_uw)(code + jump->u.label->size);
212 }
213 inst = (sljit_ins*)jump->addr;
214 if (jump->flags & IS_COND)
215 inst--;
216
217 /* B instructions. */
218 if (jump->flags & IS_MOVABLE) {
219 diff = ((sljit_w)target_addr - (sljit_w)(inst)) >> 2;
220 if (diff <= SIMM_MAX && diff >= SIMM_MIN) {
221 jump->flags |= PATCH_B;
222
223 if (!(jump->flags & IS_COND)) {
224 inst[0] = inst[-1];
225 inst[-1] = (jump->flags & IS_JAL) ? BAL : B;
226 jump->addr -= sizeof(sljit_ins);
227 return inst;
228 }
229 saved_inst = inst[0];
230 inst[0] = inst[-1];
231 inst[-1] = saved_inst ^ invert_branch(jump->flags);
232 jump->addr -= 2 * sizeof(sljit_ins);
233 return inst;
234 }
235 }
236
237 diff = ((sljit_w)target_addr - (sljit_w)(inst + 1)) >> 2;
238 if (diff <= SIMM_MAX && diff >= SIMM_MIN) {
239 jump->flags |= PATCH_B;
240
241 if (!(jump->flags & IS_COND)) {
242 inst[0] = (jump->flags & IS_JAL) ? BAL : B;
243 inst[1] = NOP;
244 return inst + 1;
245 }
246 inst[0] = inst[0] ^ invert_branch(jump->flags);
247 inst[1] = NOP;
248 jump->addr -= sizeof(sljit_ins);
249 return inst + 1;
250 }
251
252 if (jump->flags & IS_COND) {
253 if ((target_addr & ~0xfffffff) == ((jump->addr + 3 * sizeof(sljit_ins)) & ~0xfffffff)) {
254 jump->flags |= PATCH_J;
255 inst[0] = (inst[0] & 0xffff0000) | 3;
256 inst[1] = NOP;
257 inst[2] = J;
258 inst[3] = NOP;
259 jump->addr += sizeof(sljit_ins);
260 return inst + 3;
261 }
262 return code_ptr;
263 }
264
265 /* J instuctions. */
266 if (jump->flags & IS_MOVABLE) {
267 if ((target_addr & ~0xfffffff) == (jump->addr & ~0xfffffff)) {
268 jump->flags |= PATCH_J;
269 inst[0] = inst[-1];
270 inst[-1] = (jump->flags & IS_JAL) ? JAL : J;
271 jump->addr -= sizeof(sljit_ins);
272 return inst;
273 }
274 }
275
276 if ((target_addr & ~0xfffffff) == ((jump->addr + sizeof(sljit_ins)) & ~0xfffffff)) {
277 jump->flags |= PATCH_J;
278 inst[0] = (jump->flags & IS_JAL) ? JAL : J;
279 inst[1] = NOP;
280 return inst + 1;
281 }
282
283 return code_ptr;
284 }
285
286 #ifdef __GNUC__
287 static __attribute__ ((noinline)) void sljit_cache_flush(void* code, void* code_ptr)
288 {
289 SLJIT_CACHE_FLUSH(code, code_ptr);
290 }
291 #endif
292
293 SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler)
294 {
295 struct sljit_memory_fragment *buf;
296 sljit_ins *code;
297 sljit_ins *code_ptr;
298 sljit_ins *buf_ptr;
299 sljit_ins *buf_end;
300 sljit_uw word_count;
301 sljit_uw addr;
302
303 struct sljit_label *label;
304 struct sljit_jump *jump;
305 struct sljit_const *const_;
306
307 CHECK_ERROR_PTR();
308 check_sljit_generate_code(compiler);
309 reverse_buf(compiler);
310
311 code = (sljit_ins*)SLJIT_MALLOC_EXEC(compiler->size * sizeof(sljit_ins));
312 PTR_FAIL_WITH_EXEC_IF(code);
313 buf = compiler->buf;
314
315 code_ptr = code;
316 word_count = 0;
317 label = compiler->labels;
318 jump = compiler->jumps;
319 const_ = compiler->consts;
320 do {
321 buf_ptr = (sljit_ins*)buf->memory;
322 buf_end = buf_ptr + (buf->used_size >> 2);
323 do {
324 *code_ptr = *buf_ptr++;
325 SLJIT_ASSERT(!label || label->size >= word_count);
326 SLJIT_ASSERT(!jump || jump->addr >= word_count);
327 SLJIT_ASSERT(!const_ || const_->addr >= word_count);
328 /* These structures are ordered by their address. */
329 if (label && label->size == word_count) {
330 /* Just recording the address. */
331 label->addr = (sljit_uw)code_ptr;
332 label->size = code_ptr - code;
333 label = label->next;
334 }
335 if (jump && jump->addr == word_count) {
336 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
337 jump->addr = (sljit_uw)(code_ptr - 3);
338 #else
339 jump->addr = (sljit_uw)(code_ptr - 6);
340 #endif
341 code_ptr = optimize_jump(jump, code_ptr, code);
342 jump = jump->next;
343 }
344 if (const_ && const_->addr == word_count) {
345 /* Just recording the address. */
346 const_->addr = (sljit_uw)code_ptr;
347 const_ = const_->next;
348 }
349 code_ptr ++;
350 word_count ++;
351 } while (buf_ptr < buf_end);
352
353 buf = buf->next;
354 } while (buf);
355
356 if (label && label->size == word_count) {
357 label->addr = (sljit_uw)code_ptr;
358 label->size = code_ptr - code;
359 label = label->next;
360 }
361
362 SLJIT_ASSERT(!label);
363 SLJIT_ASSERT(!jump);
364 SLJIT_ASSERT(!const_);
365 SLJIT_ASSERT(code_ptr - code <= (int)compiler->size);
366
367 jump = compiler->jumps;
368 while (jump) {
369 do {
370 addr = (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target;
371 buf_ptr = (sljit_ins*)jump->addr;
372
373 if (jump->flags & PATCH_B) {
374 addr = (sljit_w)(addr - (jump->addr + sizeof(sljit_ins))) >> 2;
375 SLJIT_ASSERT((sljit_w)addr <= SIMM_MAX && (sljit_w)addr >= SIMM_MIN);
376 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | (addr & 0xffff);
377 break;
378 }
379 if (jump->flags & PATCH_J) {
380 SLJIT_ASSERT((addr & ~0xfffffff) == ((jump->addr + sizeof(sljit_ins)) & ~0xfffffff));
381 buf_ptr[0] |= (addr >> 2) & 0x03ffffff;
382 break;
383 }
384
385 /* Set the fields of immediate loads. */
386 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
387 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | ((addr >> 16) & 0xffff);
388 buf_ptr[1] = (buf_ptr[1] & 0xffff0000) | (addr & 0xffff);
389 #else
390 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | ((addr >> 48) & 0xffff);
391 buf_ptr[1] = (buf_ptr[1] & 0xffff0000) | ((addr >> 32) & 0xffff);
392 buf_ptr[3] = (buf_ptr[3] & 0xffff0000) | ((addr >> 16) & 0xffff);
393 buf_ptr[4] = (buf_ptr[4] & 0xffff0000) | (addr & 0xffff);
394 #endif
395 } while (0);
396 jump = jump->next;
397 }
398
399 compiler->error = SLJIT_ERR_COMPILED;
400 compiler->executable_size = compiler->size * sizeof(sljit_ins);
401 #ifndef __GNUC__
402 SLJIT_CACHE_FLUSH(code, code_ptr);
403 #else
404 /* GCC workaround for invalid code generation with -O2. */
405 sljit_cache_flush(code, code_ptr);
406 #endif
407 return code;
408 }
409
410 /* Creates an index in data_transfer_insts array. */
411 #define WORD_DATA 0x00
412 #define BYTE_DATA 0x01
413 #define HALF_DATA 0x02
414 #define INT_DATA 0x03
415 #define SIGNED_DATA 0x04
416 #define LOAD_DATA 0x08
417
418 #define MEM_MASK 0x0f
419
420 #define WRITE_BACK 0x00010
421 #define ARG_TEST 0x00020
422 #define CUMULATIVE_OP 0x00040
423 #define LOGICAL_OP 0x00080
424 #define IMM_OP 0x00100
425 #define SRC2_IMM 0x00200
426
427 #define UNUSED_DEST 0x00400
428 #define REG_DEST 0x00800
429 #define REG1_SOURCE 0x01000
430 #define REG2_SOURCE 0x02000
431 #define SLOW_SRC1 0x04000
432 #define SLOW_SRC2 0x08000
433 #define SLOW_DEST 0x10000
434
435 /* Only these flags are set. UNUSED_DEST is not set when no flags should be set. */
436 #define CHECK_FLAGS(list) \
437 (!(flags & UNUSED_DEST) || (op & GET_FLAGS(~(list))))
438
439 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
440 #include "sljitNativeMIPS_32.c"
441 #else
442 #include "sljitNativeMIPS_64.c"
443 #endif
444
445 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
446 #define STACK_STORE SW
447 #define STACK_LOAD LW
448 #else
449 #define STACK_STORE SD
450 #define STACK_LOAD LD
451 #endif
452
453 static int emit_op(struct sljit_compiler *compiler, int op, int inp_flags,
454 int dst, sljit_w dstw,
455 int src1, sljit_w src1w,
456 int src2, sljit_w src2w);
457
458 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_enter(struct sljit_compiler *compiler, int args, int temporaries, int generals, int local_size)
459 {
460 sljit_ins base;
461
462 CHECK_ERROR();
463 check_sljit_emit_enter(compiler, args, temporaries, generals, local_size);
464
465 compiler->temporaries = temporaries;
466 compiler->generals = generals;
467
468 compiler->has_locals = local_size > 0;
469 local_size += (generals + 2 + 4) * sizeof(sljit_w);
470 local_size = (local_size + 15) & ~0xf;
471 compiler->local_size = local_size;
472
473 if (local_size <= SIMM_MAX) {
474 /* Frequent case. */
475 FAIL_IF(push_inst(compiler, ADDIU_W | S(REAL_STACK_PTR) | T(REAL_STACK_PTR) | IMM(-local_size), DR(REAL_STACK_PTR)));
476 base = S(REAL_STACK_PTR);
477 }
478 else {
479 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), local_size));
480 FAIL_IF(push_inst(compiler, ADDU_W | S(REAL_STACK_PTR) | TA(0) | D(TMP_REG2), DR(TMP_REG2)));
481 FAIL_IF(push_inst(compiler, SUBU_W | S(REAL_STACK_PTR) | T(TMP_REG1) | D(REAL_STACK_PTR), DR(REAL_STACK_PTR)));
482 base = S(TMP_REG2);
483 local_size = 0;
484 }
485
486 FAIL_IF(push_inst(compiler, STACK_STORE | base | TA(RETURN_ADDR_REG) | IMM(local_size - 1 * (int)sizeof(sljit_w)), MOVABLE_INS));
487 if (compiler->has_locals)
488 FAIL_IF(push_inst(compiler, STACK_STORE | base | T(SLJIT_LOCALS_REG) | IMM(local_size - 2 * (int)sizeof(sljit_w)), MOVABLE_INS));
489 if (generals >= 1)
490 FAIL_IF(push_inst(compiler, STACK_STORE | base | T(SLJIT_GENERAL_REG1) | IMM(local_size - 3 * (int)sizeof(sljit_w)), MOVABLE_INS));
491 if (generals >= 2)
492 FAIL_IF(push_inst(compiler, STACK_STORE | base | T(SLJIT_GENERAL_REG2) | IMM(local_size - 4 * (int)sizeof(sljit_w)), MOVABLE_INS));
493 if (generals >= 3)
494 FAIL_IF(push_inst(compiler, STACK_STORE | base | T(SLJIT_GENERAL_REG3) | IMM(local_size - 5 * (int)sizeof(sljit_w)), MOVABLE_INS));
495 if (generals >= 4)
496 FAIL_IF(push_inst(compiler, STACK_STORE | base | T(SLJIT_GENERAL_EREG1) | IMM(local_size - 6 * (int)sizeof(sljit_w)), MOVABLE_INS));
497 if (generals >= 5)
498 FAIL_IF(push_inst(compiler, STACK_STORE | base | T(SLJIT_GENERAL_EREG2) | IMM(local_size - 7 * (int)sizeof(sljit_w)), MOVABLE_INS));
499
500 if (compiler->has_locals)
501 FAIL_IF(push_inst(compiler, ADDIU_W | S(REAL_STACK_PTR) | T(SLJIT_LOCALS_REG) | IMM(4 * sizeof(sljit_w)), DR(SLJIT_LOCALS_REG)));
502
503 if (args >= 1)
504 FAIL_IF(push_inst(compiler, ADDU_W | SA(4) | TA(0) | D(SLJIT_GENERAL_REG1), DR(SLJIT_GENERAL_REG1)));
505 if (args >= 2)
506 FAIL_IF(push_inst(compiler, ADDU_W | SA(5) | TA(0) | D(SLJIT_GENERAL_REG2), DR(SLJIT_GENERAL_REG2)));
507 if (args >= 3)
508 FAIL_IF(push_inst(compiler, ADDU_W | SA(6) | TA(0) | D(SLJIT_GENERAL_REG3), DR(SLJIT_GENERAL_REG3)));
509
510 return SLJIT_SUCCESS;
511 }
512
513 SLJIT_API_FUNC_ATTRIBUTE void sljit_fake_enter(struct sljit_compiler *compiler, int args, int temporaries, int generals, int local_size)
514 {
515 CHECK_ERROR_VOID();
516 check_sljit_fake_enter(compiler, args, temporaries, generals, local_size);
517
518 compiler->temporaries = temporaries;
519 compiler->generals = generals;
520
521 compiler->has_locals = local_size > 0;
522 local_size += (generals + 2 + 4) * sizeof(sljit_w);
523 compiler->local_size = (local_size + 15) & ~0xf;
524 }
525
526 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_return(struct sljit_compiler *compiler, int src, sljit_w srcw)
527 {
528 int local_size;
529 sljit_ins base;
530
531 CHECK_ERROR();
532 check_sljit_emit_return(compiler, src, srcw);
533
534 local_size = compiler->local_size;
535
536 if (src != SLJIT_UNUSED && src != SLJIT_RETURN_REG)
537 FAIL_IF(emit_op(compiler, SLJIT_MOV, WORD_DATA, SLJIT_RETURN_REG, 0, TMP_REG1, 0, src, srcw));
538
539 if (local_size <= SIMM_MAX)
540 base = S(REAL_STACK_PTR);
541 else {
542 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), local_size));
543 FAIL_IF(push_inst(compiler, ADDU_W | S(REAL_STACK_PTR) | T(TMP_REG1) | D(TMP_REG1), DR(TMP_REG1)));
544 base = S(TMP_REG1);
545 local_size = 0;
546 }
547
548 FAIL_IF(push_inst(compiler, STACK_LOAD | base | TA(RETURN_ADDR_REG) | IMM(local_size - 1 * (int)sizeof(sljit_w)), RETURN_ADDR_REG));
549 if (compiler->generals >= 5)
550 FAIL_IF(push_inst(compiler, STACK_LOAD | base | T(SLJIT_GENERAL_EREG2) | IMM(local_size - 7 * (int)sizeof(sljit_w)), DR(SLJIT_GENERAL_EREG2)));
551 if (compiler->generals >= 4)
552 FAIL_IF(push_inst(compiler, STACK_LOAD | base | T(SLJIT_GENERAL_EREG1) | IMM(local_size - 6 * (int)sizeof(sljit_w)), DR(SLJIT_GENERAL_EREG1)));
553 if (compiler->generals >= 3)
554 FAIL_IF(push_inst(compiler, STACK_LOAD | base | T(SLJIT_GENERAL_REG3) | IMM(local_size - 5 * (int)sizeof(sljit_w)), DR(SLJIT_GENERAL_REG3)));
555 if (compiler->generals >= 2)
556 FAIL_IF(push_inst(compiler, STACK_LOAD | base | T(SLJIT_GENERAL_REG2) | IMM(local_size - 4 * (int)sizeof(sljit_w)), DR(SLJIT_GENERAL_REG2)));
557 if (compiler->generals >= 1)
558 FAIL_IF(push_inst(compiler, STACK_LOAD | base | T(SLJIT_GENERAL_REG1) | IMM(local_size - 3 * (int)sizeof(sljit_w)), DR(SLJIT_GENERAL_REG1)));
559 if (compiler->has_locals)
560 FAIL_IF(push_inst(compiler, STACK_LOAD | base | T(SLJIT_LOCALS_REG) | IMM(local_size - 2 * (int)sizeof(sljit_w)), DR(SLJIT_LOCALS_REG)));
561
562 FAIL_IF(push_inst(compiler, JR | SA(RETURN_ADDR_REG), UNMOVABLE_INS));
563 if (compiler->local_size <= SIMM_MAX)
564 return push_inst(compiler, ADDIU_W | S(REAL_STACK_PTR) | T(REAL_STACK_PTR) | IMM(compiler->local_size), UNMOVABLE_INS);
565 else
566 return push_inst(compiler, ADDU_W | S(TMP_REG1) | TA(0) | D(REAL_STACK_PTR), UNMOVABLE_INS);
567 }
568
569 #undef STACK_STORE
570 #undef STACK_LOAD
571
572 /* --------------------------------------------------------------------- */
573 /* Operators */
574 /* --------------------------------------------------------------------- */
575
576 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
577 #define ARCH_DEPEND(a, b) a
578 #else
579 #define ARCH_DEPEND(a, b) b
580 #endif
581
582 static SLJIT_CONST sljit_ins data_transfer_insts[16] = {
583 /* s u w */ ARCH_DEPEND(HI(43) /* sw */, HI(63) /* sd */),
584 /* s u b */ HI(40) /* sb */,
585 /* s u h */ HI(41) /* sh*/,
586 /* s u i */ HI(43) /* sw */,
587
588 /* s s w */ ARCH_DEPEND(HI(43) /* sw */, HI(63) /* sd */),
589 /* s s b */ HI(40) /* sb */,
590 /* s s h */ HI(41) /* sh*/,
591 /* s s i */ HI(43) /* sw */,
592
593 /* l u w */ ARCH_DEPEND(HI(35) /* lw */, HI(55) /* ld */),
594 /* l u b */ HI(36) /* lbu */,
595 /* l u h */ HI(37) /* lhu */,
596 /* l u i */ ARCH_DEPEND(HI(35) /* lw */, HI(39) /* lwu */),
597
598 /* l s w */ ARCH_DEPEND(HI(35) /* lw */, HI(55) /* ld */),
599 /* l s b */ HI(32) /* lb */,
600 /* l s h */ HI(33) /* lh */,
601 /* l s i */ HI(35) /* lw */,
602 };
603
604 /* reg_ar is an absoulute register! */
605
606 /* Can perform an operation using at most 1 instruction. */
607 static int getput_arg_fast(struct sljit_compiler *compiler, int flags, int reg_ar, int arg, sljit_w argw)
608 {
609 SLJIT_ASSERT(arg & SLJIT_MEM);
610
611 if (!(flags & WRITE_BACK) && !(arg & 0xf0) && argw <= SIMM_MAX && argw >= SIMM_MIN) {
612 /* Works for both absoulte and relative addresses. */
613 if (SLJIT_UNLIKELY(flags & ARG_TEST))
614 return 1;
615 FAIL_IF(push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(arg & 0xf) | TA(reg_ar) | IMM(argw), (flags & LOAD_DATA) ? reg_ar : MOVABLE_INS));
616 return -1;
617 }
618 return (flags & ARG_TEST) ? SLJIT_SUCCESS : 0;
619 }
620
621 /* See getput_arg below.
622 Note: can_cache is called only for binary operators. Those
623 operators always uses word arguments without write back. */
624 static int can_cache(int arg, sljit_w argw, int next_arg, sljit_w next_argw)
625 {
626 if (!(next_arg & SLJIT_MEM))
627 return 0;
628
629 /* Simple operation except for updates. */
630 if (arg & 0xf0) {
631 argw &= 0x3;
632 next_argw &= 0x3;
633 if (argw && argw == next_argw && (arg == next_arg || (arg & 0xf0) == (next_arg & 0xf0)))
634 return 1;
635 return 0;
636 }
637
638 if (arg == next_arg) {
639 if (((sljit_uw)(next_argw - argw) <= SIMM_MAX && (sljit_uw)(next_argw - argw) >= SIMM_MIN))
640 return 1;
641 return 0;
642 }
643
644 return 0;
645 }
646
647 /* Emit the necessary instructions. See can_cache above. */
648 static int getput_arg(struct sljit_compiler *compiler, int flags, int reg_ar, int arg, sljit_w argw, int next_arg, sljit_w next_argw)
649 {
650 int tmp_ar;
651 int base;
652
653 SLJIT_ASSERT(arg & SLJIT_MEM);
654 if (!(next_arg & SLJIT_MEM)) {
655 next_arg = 0;
656 next_argw = 0;
657 }
658
659 tmp_ar = (flags & LOAD_DATA) ? reg_ar : DR(TMP_REG3);
660 base = arg & 0xf;
661
662 if (SLJIT_UNLIKELY(arg & 0xf0)) {
663 argw &= 0x3;
664 if ((flags & WRITE_BACK) && reg_ar == DR(base)) {
665 SLJIT_ASSERT(!(flags & LOAD_DATA) && DR(TMP_REG1) != reg_ar);
666 FAIL_IF(push_inst(compiler, ADDU_W | SA(reg_ar) | TA(0) | D(TMP_REG1), DR(TMP_REG1)));
667 reg_ar = DR(TMP_REG1);
668 }
669
670 /* Using the cache. */
671 if (argw == compiler->cache_argw) {
672 if (!(flags & WRITE_BACK)) {
673 if (arg == compiler->cache_arg)
674 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), (flags & LOAD_DATA) ? reg_ar : MOVABLE_INS);
675 if ((SLJIT_MEM | (arg & 0xf0)) == compiler->cache_arg) {
676 if (arg == next_arg && argw == (next_argw & 0x3)) {
677 compiler->cache_arg = arg;
678 compiler->cache_argw = argw;
679 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(TMP_REG3), DR(TMP_REG3)));
680 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), (flags & LOAD_DATA) ? reg_ar : MOVABLE_INS);
681 }
682 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | DA(tmp_ar), tmp_ar));
683 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | SA(tmp_ar) | TA(reg_ar), (flags & LOAD_DATA) ? reg_ar : MOVABLE_INS);
684 }
685 }
686 else {
687 if ((SLJIT_MEM | (arg & 0xf0)) == compiler->cache_arg) {
688 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(base), DR(base)));
689 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar), (flags & LOAD_DATA) ? reg_ar : MOVABLE_INS);
690 }
691 }
692 }
693
694 if (SLJIT_UNLIKELY(argw)) {
695 compiler->cache_arg = SLJIT_MEM | (arg & 0xf0);
696 compiler->cache_argw = argw;
697 FAIL_IF(push_inst(compiler, SLL_W | T((arg >> 4) & 0xf) | D(TMP_REG3) | SH_IMM(argw), DR(TMP_REG3)));
698 }
699
700 if (!(flags & WRITE_BACK)) {
701 if (arg == next_arg && argw == (next_argw & 0x3)) {
702 compiler->cache_arg = arg;
703 compiler->cache_argw = argw;
704 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(!argw ? ((arg >> 4) & 0xf) : TMP_REG3) | D(TMP_REG3), DR(TMP_REG3)));
705 tmp_ar = DR(TMP_REG3);
706 }
707 else
708 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(!argw ? ((arg >> 4) & 0xf) : TMP_REG3) | DA(tmp_ar), tmp_ar));
709 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | SA(tmp_ar) | TA(reg_ar), (flags & LOAD_DATA) ? reg_ar : MOVABLE_INS);
710 }
711 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(!argw ? ((arg >> 4) & 0xf) : TMP_REG3) | D(base), DR(base)));
712 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar), (flags & LOAD_DATA) ? reg_ar : MOVABLE_INS);
713 }
714
715 if (SLJIT_UNLIKELY(flags & WRITE_BACK) && base) {
716 /* Update only applies if a base register exists. */
717 if (reg_ar == DR(base)) {
718 SLJIT_ASSERT(!(flags & LOAD_DATA) && DR(TMP_REG1) != reg_ar);
719 if (argw <= SIMM_MAX && argw >= SIMM_MIN) {
720 FAIL_IF(push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar) | IMM(argw), MOVABLE_INS));
721 if (argw)
722 return push_inst(compiler, ADDIU_W | S(base) | T(base) | IMM(argw), DR(base));
723 return SLJIT_SUCCESS;
724 }
725 FAIL_IF(push_inst(compiler, ADDU_W | SA(reg_ar) | TA(0) | D(TMP_REG1), DR(TMP_REG1)));
726 reg_ar = DR(TMP_REG1);
727 }
728
729 if (argw <= SIMM_MAX && argw >= SIMM_MIN) {
730 if (argw)
731 FAIL_IF(push_inst(compiler, ADDIU_W | S(base) | T(base) | IMM(argw), DR(base)));
732 }
733 else {
734 if (compiler->cache_arg == SLJIT_MEM && argw - compiler->cache_argw <= SIMM_MAX && argw - compiler->cache_argw >= SIMM_MIN) {
735 if (argw != compiler->cache_argw) {
736 FAIL_IF(push_inst(compiler, ADDIU_W | S(TMP_REG3) | T(TMP_REG3) | IMM(argw - compiler->cache_argw), DR(TMP_REG3)));
737 compiler->cache_argw = argw;
738 }
739 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(base), DR(base)));
740 }
741 else {
742 compiler->cache_arg = SLJIT_MEM;
743 compiler->cache_argw = argw;
744 FAIL_IF(load_immediate(compiler, DR(TMP_REG3), argw));
745 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(base), DR(base)));
746 }
747 }
748 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar), (flags & LOAD_DATA) ? reg_ar : MOVABLE_INS);
749 }
750
751 if (compiler->cache_arg == arg && argw - compiler->cache_argw <= SIMM_MAX && argw - compiler->cache_argw >= SIMM_MIN) {
752 if (argw != compiler->cache_argw) {
753 FAIL_IF(push_inst(compiler, ADDIU_W | S(TMP_REG3) | T(TMP_REG3) | IMM(argw - compiler->cache_argw), DR(TMP_REG3)));
754 compiler->cache_argw = argw;
755 }
756 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), (flags & LOAD_DATA) ? reg_ar : MOVABLE_INS);
757 }
758
759 if (compiler->cache_arg == SLJIT_MEM && argw - compiler->cache_argw <= SIMM_MAX && argw - compiler->cache_argw >= SIMM_MIN) {
760 if (argw != compiler->cache_argw)
761 FAIL_IF(push_inst(compiler, ADDIU_W | S(TMP_REG3) | T(TMP_REG3) | IMM(argw - compiler->cache_argw), DR(TMP_REG3)));
762 }
763 else {
764 compiler->cache_arg = SLJIT_MEM;
765 FAIL_IF(load_immediate(compiler, DR(TMP_REG3), argw));
766 }
767 compiler->cache_argw = argw;
768
769 if (!base)
770 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), (flags & LOAD_DATA) ? reg_ar : MOVABLE_INS);
771
772 if (arg == next_arg && next_argw - argw <= SIMM_MAX && next_argw - argw >= SIMM_MIN) {
773 compiler->cache_arg = arg;
774 FAIL_IF(push_inst(compiler, ADDU_W | S(TMP_REG3) | T(base) | D(TMP_REG3), DR(TMP_REG3)));
775 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), (flags & LOAD_DATA) ? reg_ar : MOVABLE_INS);
776 }
777
778 FAIL_IF(push_inst(compiler, ADDU_W | S(TMP_REG3) | T(base) | DA(tmp_ar), tmp_ar));
779 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | SA(tmp_ar) | TA(reg_ar), (flags & LOAD_DATA) ? reg_ar : MOVABLE_INS);
780 }
781
782 static SLJIT_INLINE int emit_op_mem(struct sljit_compiler *compiler, int flags, int reg_ar, int arg, sljit_w argw)
783 {
784 if (getput_arg_fast(compiler, flags, reg_ar, arg, argw))
785 return compiler->error;
786 compiler->cache_arg = 0;
787 compiler->cache_argw = 0;
788 return getput_arg(compiler, flags, reg_ar, arg, argw, 0, 0);
789 }
790
791 static int emit_op(struct sljit_compiler *compiler, int op, int flags,
792 int dst, sljit_w dstw,
793 int src1, sljit_w src1w,
794 int src2, sljit_w src2w)
795 {
796 /* arg1 goes to TMP_REG1 or src reg
797 arg2 goes to TMP_REG2, imm or src reg
798 TMP_REG3 can be used for caching
799 result goes to TMP_REG2, so put result can use TMP_REG1 and TMP_REG3. */
800 int dst_r = TMP_REG2;
801 int src1_r;
802 sljit_w src2_r = 0;
803 int sugg_src2_r = TMP_REG2;
804
805 compiler->cache_arg = 0;
806 compiler->cache_argw = 0;
807
808 if (dst >= SLJIT_TEMPORARY_REG1 && dst <= TMP_REG3) {
809 dst_r = dst;
810 flags |= REG_DEST;
811 if (GET_OPCODE(op) >= SLJIT_MOV && GET_OPCODE(op) <= SLJIT_MOVU_SI)
812 sugg_src2_r = dst_r;
813 }
814 else if (dst == SLJIT_UNUSED) {
815 if (op >= SLJIT_MOV && op <= SLJIT_MOVU_SI && !(src2 & SLJIT_MEM))
816 return SLJIT_SUCCESS;
817 if (GET_FLAGS(op))
818 flags |= UNUSED_DEST;
819 }
820 else if ((dst & SLJIT_MEM) && !getput_arg_fast(compiler, flags | ARG_TEST, DR(TMP_REG1), dst, dstw))
821 flags |= SLOW_DEST;
822
823 if (flags & IMM_OP) {
824 if ((src2 & SLJIT_IMM) && src2w) {
825 if ((!(flags & LOGICAL_OP) && (src2w <= SIMM_MAX && src2w >= SIMM_MIN))
826 || ((flags & LOGICAL_OP) && !(src2w & ~UIMM_MAX))) {
827 flags |= SRC2_IMM;
828 src2_r = src2w;
829 }
830 }
831 if ((src1 & SLJIT_IMM) && src1w && (flags & CUMULATIVE_OP) && !(flags & SRC2_IMM)) {
832 if ((!(flags & LOGICAL_OP) && (src1w <= SIMM_MAX && src1w >= SIMM_MIN))
833 || ((flags & LOGICAL_OP) && !(src1w & ~UIMM_MAX))) {
834 flags |= SRC2_IMM;
835 src2_r = src1w;
836
837 /* And swap arguments. */
838 src1 = src2;
839 src1w = src2w;
840 src2 = SLJIT_IMM;
841 /* src2w = src2_r unneeded. */
842 }
843 }
844 }
845
846 /* Source 1. */
847 if (src1 >= SLJIT_TEMPORARY_REG1 && src1 <= TMP_REG3) {
848 src1_r = src1;
849 flags |= REG1_SOURCE;
850 }
851 else if (src1 & SLJIT_IMM) {
852 if (src1w) {
853 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), src1w));
854 src1_r = TMP_REG1;
855 }
856 else
857 src1_r = 0;
858 }
859 else {
860 if (getput_arg_fast(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w))
861 FAIL_IF(compiler->error);
862 else
863 flags |= SLOW_SRC1;
864 src1_r = TMP_REG1;
865 }
866
867 /* Source 2. */
868 if (src2 >= SLJIT_TEMPORARY_REG1 && src2 <= TMP_REG3) {
869 src2_r = src2;
870 flags |= REG2_SOURCE;
871 if (!(flags & REG_DEST) && GET_OPCODE(op) >= SLJIT_MOV && GET_OPCODE(op) <= SLJIT_MOVU_SI)
872 dst_r = src2_r;
873 }
874 else if (src2 & SLJIT_IMM) {
875 if (!(flags & SRC2_IMM)) {
876 if (src2w || (GET_OPCODE(op) >= SLJIT_MOV && GET_OPCODE(op) <= SLJIT_MOVU_SI)) {
877 FAIL_IF(load_immediate(compiler, DR(sugg_src2_r), src2w));
878 src2_r = sugg_src2_r;
879 }
880 else
881 src2_r = 0;
882 }
883 }
884 else {
885 if (getput_arg_fast(compiler, flags | LOAD_DATA, DR(sugg_src2_r), src2, src2w))
886 FAIL_IF(compiler->error);
887 else
888 flags |= SLOW_SRC2;
889 src2_r = sugg_src2_r;
890 }
891
892 if ((flags & (SLOW_SRC1 | SLOW_SRC2)) == (SLOW_SRC1 | SLOW_SRC2)) {
893 SLJIT_ASSERT(src2_r == TMP_REG2);
894 if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
895 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG2), src2, src2w, src1, src1w));
896 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w, dst, dstw));
897 }
898 else {
899 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w, src2, src2w));
900 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG2), src2, src2w, dst, dstw));
901 }
902 }
903 else if (flags & SLOW_SRC1)
904 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w, dst, dstw));
905 else if (flags & SLOW_SRC2)
906 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(sugg_src2_r), src2, src2w, dst, dstw));
907
908 FAIL_IF(emit_single_op(compiler, op, flags, dst_r, src1_r, src2_r));
909
910 if (dst & SLJIT_MEM) {
911 if (!(flags & SLOW_DEST)) {
912 getput_arg_fast(compiler, flags, DR(dst_r), dst, dstw);
913 return compiler->error;
914 }
915 return getput_arg(compiler, flags, DR(dst_r), dst, dstw, 0, 0);
916 }
917
918 return SLJIT_SUCCESS;
919 }
920
921 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op0(struct sljit_compiler *compiler, int op)
922 {
923 CHECK_ERROR();
924 check_sljit_emit_op0(compiler, op);
925
926 op = GET_OPCODE(op);
927 switch (op) {
928 case SLJIT_BREAKPOINT:
929 return push_inst(compiler, BREAK, UNMOVABLE_INS);
930 case SLJIT_NOP:
931 return push_inst(compiler, NOP, UNMOVABLE_INS);
932 }
933
934 return SLJIT_SUCCESS;
935 }
936
937 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op1(struct sljit_compiler *compiler, int op,
938 int dst, sljit_w dstw,
939 int src, sljit_w srcw)
940 {
941 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
942 #define inp_flags 0
943 #endif
944
945 CHECK_ERROR();
946 check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw);
947
948 SLJIT_COMPILE_ASSERT(SLJIT_MOV + 7 == SLJIT_MOVU, movu_offset);
949
950 switch (GET_OPCODE(op)) {
951 case SLJIT_MOV:
952 return emit_op(compiler, SLJIT_MOV, inp_flags | WORD_DATA, dst, dstw, TMP_REG1, 0, src, srcw);
953
954 case SLJIT_MOV_UI:
955 return emit_op(compiler, SLJIT_MOV_UI, inp_flags | INT_DATA, dst, dstw, TMP_REG1, 0, src, srcw);
956
957 case SLJIT_MOV_SI:
958 return emit_op(compiler, SLJIT_MOV_SI, inp_flags | INT_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, srcw);
959
960 case SLJIT_MOV_UB:
961 return emit_op(compiler, SLJIT_MOV_UB, inp_flags | BYTE_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned char)srcw : srcw);
962
963 case SLJIT_MOV_SB:
964 return emit_op(compiler, SLJIT_MOV_SB, inp_flags | BYTE_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed char)srcw : srcw);
965
966 case SLJIT_MOV_UH:
967 return emit_op(compiler, SLJIT_MOV_UH, inp_flags | HALF_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned short)srcw : srcw);
968
969 case SLJIT_MOV_SH:
970 return emit_op(compiler, SLJIT_MOV_SH, inp_flags | HALF_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed short)srcw : srcw);
971
972 case SLJIT_MOVU:
973 return emit_op(compiler, SLJIT_MOV, inp_flags | WORD_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
974
975 case SLJIT_MOVU_UI:
976 return emit_op(compiler, SLJIT_MOV_UI, inp_flags | INT_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
977
978 case SLJIT_MOVU_SI:
979 return emit_op(compiler, SLJIT_MOV_SI, inp_flags | INT_DATA | SIGNED_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
980
981 case SLJIT_MOVU_UB:
982 return emit_op(compiler, SLJIT_MOV_UB, inp_flags | BYTE_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned char)srcw : srcw);
983
984 case SLJIT_MOVU_SB:
985 return emit_op(compiler, SLJIT_MOV_SB, inp_flags | BYTE_DATA | SIGNED_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed char)srcw : srcw);
986
987 case SLJIT_MOVU_UH:
988 return emit_op(compiler, SLJIT_MOV_UH, inp_flags | HALF_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned short)srcw : srcw);
989
990 case SLJIT_MOVU_SH:
991 return emit_op(compiler, SLJIT_MOV_SH, inp_flags | HALF_DATA | SIGNED_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed short)srcw : srcw);
992
993 case SLJIT_NOT:
994 return emit_op(compiler, op, inp_flags, dst, dstw, TMP_REG1, 0, src, srcw);
995
996 case SLJIT_NEG:
997 return emit_op(compiler, SLJIT_SUB | GET_ALL_FLAGS(op), inp_flags | IMM_OP, dst, dstw, SLJIT_IMM, 0, src, srcw);
998
999 case SLJIT_CLZ:
1000 return emit_op(compiler, op, inp_flags, dst, dstw, TMP_REG1, 0, src, srcw);
1001 }
1002
1003 return SLJIT_SUCCESS;
1004 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1005 #undef inp_flags
1006 #endif
1007 }
1008
1009 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op2(struct sljit_compiler *compiler, int op,
1010 int dst, sljit_w dstw,
1011 int src1, sljit_w src1w,
1012 int src2, sljit_w src2w)
1013 {
1014 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1015 #define inp_flags 0
1016 #endif
1017
1018 CHECK_ERROR();
1019 check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w);
1020
1021 switch (GET_OPCODE(op)) {
1022 case SLJIT_ADD:
1023 case SLJIT_ADDC:
1024 return emit_op(compiler, op, inp_flags | CUMULATIVE_OP | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1025
1026 case SLJIT_SUB:
1027 case SLJIT_SUBC:
1028 return emit_op(compiler, op, inp_flags | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1029
1030 case SLJIT_MUL:
1031 return emit_op(compiler, op, inp_flags | CUMULATIVE_OP, dst, dstw, src1, src1w, src2, src2w);
1032
1033 case SLJIT_AND:
1034 case SLJIT_OR:
1035 case SLJIT_XOR:
1036 return emit_op(compiler, op, inp_flags | CUMULATIVE_OP | LOGICAL_OP | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1037
1038 case SLJIT_SHL:
1039 case SLJIT_LSHR:
1040 case SLJIT_ASHR:
1041 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1042 if (src2 & SLJIT_IMM)
1043 src2w &= 0x1f;
1044 #else
1045 if (src2 & SLJIT_IMM)
1046 src2w &= 0x3f;
1047 #endif
1048 return emit_op(compiler, op, inp_flags | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1049 }
1050
1051 return SLJIT_SUCCESS;
1052 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1053 #undef inp_flags
1054 #endif
1055 }
1056
1057 /* --------------------------------------------------------------------- */
1058 /* Floating point operators */
1059 /* --------------------------------------------------------------------- */
1060
1061 SLJIT_API_FUNC_ATTRIBUTE int sljit_is_fpu_available(void)
1062 {
1063 #if (defined SLJIT_QEMU && SLJIT_QEMU)
1064 /* Qemu says fir is 0 by default. */
1065 return 1;
1066 #elif defined(__GNUC__)
1067 sljit_w fir;
1068 asm ("cfc1 %0, $0" : "=r"(fir));
1069 return (fir >> 22) & 0x1;
1070 #else
1071 #error "FIR check is not implemented for this architecture"
1072 #endif
1073 }
1074
1075 static int emit_fpu_data_transfer(struct sljit_compiler *compiler, int fpu_reg, int load, int arg, sljit_w argw)
1076 {
1077 int hi_reg;
1078
1079 SLJIT_ASSERT(arg & SLJIT_MEM);
1080
1081 /* Fast loads and stores. */
1082 if (!(arg & 0xf0)) {
1083 /* Both for (arg & 0xf) == SLJIT_UNUSED and (arg & 0xf) != SLJIT_UNUSED. */
1084 if (argw <= SIMM_MAX && argw >= SIMM_MIN)
1085 return push_inst(compiler, (load ? LDC1 : SDC1) | S(arg & 0xf) | FT(fpu_reg) | IMM(argw), MOVABLE_INS);
1086 }
1087
1088 if (arg & 0xf0) {
1089 argw &= 0x3;
1090 hi_reg = (arg >> 4) & 0xf;
1091 if (argw) {
1092 FAIL_IF(push_inst(compiler, SLL_W | T(hi_reg) | D(TMP_REG1) | SH_IMM(argw), DR(TMP_REG1)));
1093 hi_reg = TMP_REG1;
1094 }
1095 FAIL_IF(push_inst(compiler, ADDU_W | S(hi_reg) | T(arg & 0xf) | D(TMP_REG1), DR(TMP_REG1)));
1096 return push_inst(compiler, (load ? LDC1 : SDC1) | S(TMP_REG1) | FT(fpu_reg) | IMM(0), MOVABLE_INS);
1097 }
1098
1099 /* Use cache. */
1100 if (compiler->cache_arg == arg && argw - compiler->cache_argw <= SIMM_MAX && argw - compiler->cache_argw >= SIMM_MIN)
1101 return push_inst(compiler, (load ? LDC1 : SDC1) | S(TMP_REG3) | FT(fpu_reg) | IMM(argw - compiler->cache_argw), MOVABLE_INS);
1102
1103 /* Put value to cache. */
1104 compiler->cache_arg = arg;
1105 compiler->cache_argw = argw;
1106
1107 FAIL_IF(load_immediate(compiler, DR(TMP_REG3), argw));
1108 if (arg & 0xf)
1109 FAIL_IF(push_inst(compiler, ADDU_W | S(TMP_REG3) | T(arg & 0xf) | D(TMP_REG3), DR(TMP_REG3)));
1110 return push_inst(compiler, (load ? LDC1 : SDC1) | S(TMP_REG3) | FT(fpu_reg) | IMM(0), MOVABLE_INS);
1111 }
1112
1113 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fop1(struct sljit_compiler *compiler, int op,
1114 int dst, sljit_w dstw,
1115 int src, sljit_w srcw)
1116 {
1117 int dst_fr;
1118
1119 CHECK_ERROR();
1120 check_sljit_emit_fop1(compiler, op, dst, dstw, src, srcw);
1121
1122 compiler->cache_arg = 0;
1123 compiler->cache_argw = 0;
1124
1125 if (GET_OPCODE(op) == SLJIT_FCMP) {
1126 if (dst > SLJIT_FLOAT_REG4) {
1127 FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG1, 1, dst, dstw));
1128 dst = TMP_FREG1;
1129 }
1130 if (src > SLJIT_FLOAT_REG4) {
1131 FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG2, 1, src, srcw));
1132 src = TMP_FREG2;
1133 }
1134
1135 /* src and dst are swapped. */
1136 if (op & SLJIT_SET_E) {
1137 FAIL_IF(push_inst(compiler, C_UEQ_D | FT(src) | FS(dst), UNMOVABLE_INS));
1138 FAIL_IF(push_inst(compiler, CFC1 | TA(EQUAL_FLAG) | DA(FCSR_REG), EQUAL_FLAG));
1139 FAIL_IF(push_inst(compiler, SRL | TA(EQUAL_FLAG) | DA(EQUAL_FLAG) | SH_IMM(23), EQUAL_FLAG));
1140 FAIL_IF(push_inst(compiler, ANDI | SA(EQUAL_FLAG) | TA(EQUAL_FLAG) | IMM(1), EQUAL_FLAG));
1141 }
1142 if (op & SLJIT_SET_S) {
1143 /* Mixing the instructions for the two checks. */
1144 FAIL_IF(push_inst(compiler, C_ULT_D | FT(src) | FS(dst), UNMOVABLE_INS));
1145 FAIL_IF(push_inst(compiler, CFC1 | TA(ULESS_FLAG) | DA(FCSR_REG), ULESS_FLAG));
1146 FAIL_IF(push_inst(compiler, C_ULT_D | FT(dst) | FS(src), UNMOVABLE_INS));
1147 FAIL_IF(push_inst(compiler, SRL | TA(ULESS_FLAG) | DA(ULESS_FLAG) | SH_IMM(23), ULESS_FLAG));
1148 FAIL_IF(push_inst(compiler, ANDI | SA(ULESS_FLAG) | TA(ULESS_FLAG) | IMM(1), ULESS_FLAG));
1149 FAIL_IF(push_inst(compiler, CFC1 | TA(UGREATER_FLAG) | DA(FCSR_REG), UGREATER_FLAG));
1150 FAIL_IF(push_inst(compiler, SRL | TA(UGREATER_FLAG) | DA(UGREATER_FLAG) | SH_IMM(23), UGREATER_FLAG));
1151 FAIL_IF(push_inst(compiler, ANDI | SA(UGREATER_FLAG) | TA(UGREATER_FLAG) | IMM(1), UGREATER_FLAG));
1152 }
1153 return push_inst(compiler, C_UN_D | FT(src) | FS(dst), FCSR_FCC);
1154 }
1155
1156 dst_fr = (dst > SLJIT_FLOAT_REG4) ? TMP_FREG1 : dst;
1157
1158 if (src > SLJIT_FLOAT_REG4) {
1159 FAIL_IF(emit_fpu_data_transfer(compiler, dst_fr, 1, src, srcw));
1160 src = dst_fr;
1161 }
1162
1163 switch (op) {
1164 case SLJIT_FMOV:
1165 if (src != dst_fr && dst_fr != TMP_FREG1)
1166 FAIL_IF(push_inst(compiler, MOV_D | FS(src) | FD(dst_fr), MOVABLE_INS));
1167 break;
1168 case SLJIT_FNEG:
1169 FAIL_IF(push_inst(compiler, NEG_D | FS(src) | FD(dst_fr), MOVABLE_INS));
1170 break;
1171 case SLJIT_FABS:
1172 FAIL_IF(push_inst(compiler, ABS_D | FS(src) | FD(dst_fr), MOVABLE_INS));
1173 break;
1174 }
1175
1176 if (dst_fr == TMP_FREG1)
1177 FAIL_IF(emit_fpu_data_transfer(compiler, src, 0, dst, dstw));
1178
1179 return SLJIT_SUCCESS;
1180 }
1181
1182 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fop2(struct sljit_compiler *compiler, int op,
1183 int dst, sljit_w dstw,
1184 int src1, sljit_w src1w,
1185 int src2, sljit_w src2w)
1186 {
1187 int dst_fr;
1188
1189 CHECK_ERROR();
1190 check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w);
1191
1192 compiler->cache_arg = 0;
1193 compiler->cache_argw = 0;
1194
1195 dst_fr = (dst > SLJIT_FLOAT_REG4) ? TMP_FREG1 : dst;
1196
1197 if (src2 > SLJIT_FLOAT_REG4) {
1198 FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG2, 1, src2, src2w));
1199 src2 = TMP_FREG2;
1200 }
1201
1202 if (src1 > SLJIT_FLOAT_REG4) {
1203 FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG1, 1, src1, src1w));
1204 src1 = TMP_FREG1;
1205 }
1206
1207 switch (op) {
1208 case SLJIT_FADD:
1209 FAIL_IF(push_inst(compiler, ADD_D | FT(src2) | FS(src1) | FD(dst_fr), MOVABLE_INS));
1210 break;
1211
1212 case SLJIT_FSUB:
1213 FAIL_IF(push_inst(compiler, SUB_D | FT(src2) | FS(src1) | FD(dst_fr), MOVABLE_INS));
1214 break;
1215
1216 case SLJIT_FMUL:
1217 FAIL_IF(push_inst(compiler, MUL_D | FT(src2) | FS(src1) | FD(dst_fr), MOVABLE_INS));
1218 break;
1219
1220 case SLJIT_FDIV:
1221 FAIL_IF(push_inst(compiler, DIV_D | FT(src2) | FS(src1) | FD(dst_fr), MOVABLE_INS));
1222 break;
1223 }
1224
1225 if (dst_fr == TMP_FREG1)
1226 FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG1, 0, dst, dstw));
1227
1228 return SLJIT_SUCCESS;
1229 }
1230
1231 /* --------------------------------------------------------------------- */
1232 /* Other instructions */
1233 /* --------------------------------------------------------------------- */
1234
1235 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fast_enter(struct sljit_compiler *compiler, int dst, sljit_w dstw, int args, int temporaries, int generals, int local_size)
1236 {
1237 CHECK_ERROR();
1238 check_sljit_emit_fast_enter(compiler, dst, dstw, args, temporaries, generals, local_size);
1239
1240 compiler->temporaries = temporaries;
1241 compiler->generals = generals;
1242
1243 compiler->has_locals = local_size > 0;
1244 local_size += (generals + 2 + 4) * sizeof(sljit_w);
1245 compiler->local_size = (local_size + 15) & ~0xf;
1246
1247 if (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS)
1248 return push_inst(compiler, ADDU_W | SA(RETURN_ADDR_REG) | TA(0) | D(dst), DR(dst));
1249 else if (dst & SLJIT_MEM)
1250 return emit_op_mem(compiler, WORD_DATA, RETURN_ADDR_REG, dst, dstw);
1251 return SLJIT_SUCCESS;
1252 }
1253
1254 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fast_return(struct sljit_compiler *compiler, int src, sljit_w srcw)
1255 {
1256 CHECK_ERROR();
1257 check_sljit_emit_fast_return(compiler, src, srcw);
1258
1259 if (src >= SLJIT_TEMPORARY_REG1 && src <= SLJIT_NO_REGISTERS)
1260 FAIL_IF(push_inst(compiler, ADDU_W | S(src) | TA(0) | DA(RETURN_ADDR_REG), RETURN_ADDR_REG));
1261 else if (src & SLJIT_MEM)
1262 FAIL_IF(emit_op_mem(compiler, WORD_DATA | LOAD_DATA, RETURN_ADDR_REG, src, srcw));
1263 else if (src & SLJIT_IMM)
1264 FAIL_IF(load_immediate(compiler, RETURN_ADDR_REG, srcw));
1265
1266 FAIL_IF(push_inst(compiler, JR | SA(RETURN_ADDR_REG), UNMOVABLE_INS));
1267 return push_inst(compiler, NOP, UNMOVABLE_INS);
1268 }
1269
1270 /* --------------------------------------------------------------------- */
1271 /* Conditional instructions */
1272 /* --------------------------------------------------------------------- */
1273
1274 SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler)
1275 {
1276 struct sljit_label *label;
1277
1278 CHECK_ERROR_PTR();
1279 check_sljit_emit_label(compiler);
1280
1281 if (compiler->last_label && compiler->last_label->size == compiler->size)
1282 return compiler->last_label;
1283
1284 label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label));
1285 PTR_FAIL_IF(!label);
1286 set_label(label, compiler);
1287 compiler->delay_slot = UNMOVABLE_INS;
1288 return label;
1289 }
1290
1291 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1292 #define JUMP_LENGTH 4
1293 #else
1294 #define JUMP_LENGTH 7
1295 #endif
1296
1297 #define BR_Z(src) \
1298 inst = BEQ | SA(src) | TA(0) | JUMP_LENGTH; \
1299 flags = IS_BIT26_COND; \
1300 delay_check = src;
1301
1302 #define BR_NZ(src) \
1303 inst = BNE | SA(src) | TA(0) | JUMP_LENGTH; \
1304 flags = IS_BIT26_COND; \
1305 delay_check = src;
1306
1307 #define BR_T() \
1308 inst = BC1T | JUMP_LENGTH; \
1309 flags = IS_BIT16_COND; \
1310 delay_check = FCSR_FCC;
1311
1312 #define BR_F() \
1313 inst = BC1F | JUMP_LENGTH; \
1314 flags = IS_BIT16_COND; \
1315 delay_check = FCSR_FCC;
1316
1317 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, int type)
1318 {
1319 struct sljit_jump *jump;
1320 sljit_ins inst;
1321 int flags = 0;
1322 int delay_check = UNMOVABLE_INS;
1323
1324 CHECK_ERROR_PTR();
1325 check_sljit_emit_jump(compiler, type);
1326
1327 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1328 PTR_FAIL_IF(!jump);
1329 set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1330 type &= 0xff;
1331
1332 switch (type) {
1333 case SLJIT_C_EQUAL:
1334 case SLJIT_C_FLOAT_NOT_EQUAL:
1335 BR_NZ(EQUAL_FLAG);
1336 break;
1337 case SLJIT_C_NOT_EQUAL:
1338 case SLJIT_C_FLOAT_EQUAL:
1339 BR_Z(EQUAL_FLAG);
1340 break;
1341 case SLJIT_C_LESS:
1342 case SLJIT_C_FLOAT_LESS:
1343 BR_Z(ULESS_FLAG);
1344 break;
1345 case SLJIT_C_GREATER_EQUAL:
1346 case SLJIT_C_FLOAT_GREATER_EQUAL:
1347 BR_NZ(ULESS_FLAG);
1348 break;
1349 case SLJIT_C_GREATER:
1350 case SLJIT_C_FLOAT_GREATER:
1351 BR_Z(UGREATER_FLAG);
1352 break;
1353 case SLJIT_C_LESS_EQUAL:
1354 case SLJIT_C_FLOAT_LESS_EQUAL:
1355 BR_NZ(UGREATER_FLAG);
1356 break;
1357 case SLJIT_C_SIG_LESS:
1358 BR_Z(LESS_FLAG);
1359 break;
1360 case SLJIT_C_SIG_GREATER_EQUAL:
1361 BR_NZ(LESS_FLAG);
1362 break;
1363 case SLJIT_C_SIG_GREATER:
1364 BR_Z(GREATER_FLAG);
1365 break;
1366 case SLJIT_C_SIG_LESS_EQUAL:
1367 BR_NZ(GREATER_FLAG);
1368 break;
1369 case SLJIT_C_OVERFLOW:
1370 case SLJIT_C_MUL_OVERFLOW:
1371 BR_Z(OVERFLOW_FLAG);
1372 break;
1373 case SLJIT_C_NOT_OVERFLOW:
1374 case SLJIT_C_MUL_NOT_OVERFLOW:
1375 BR_NZ(OVERFLOW_FLAG);
1376 break;
1377 case SLJIT_C_FLOAT_NAN:
1378 BR_F();
1379 break;
1380 case SLJIT_C_FLOAT_NOT_NAN:
1381 BR_T();
1382 break;
1383 default:
1384 /* Not conditional branch. */
1385 inst = 0;
1386 break;
1387 }
1388
1389 jump->flags |= flags;
1390 if (compiler->delay_slot == MOVABLE_INS || (compiler->delay_slot != UNMOVABLE_INS && compiler->delay_slot != delay_check))
1391 jump->flags |= IS_MOVABLE;
1392
1393 if (inst)
1394 PTR_FAIL_IF(push_inst(compiler, inst, UNMOVABLE_INS));
1395
1396 PTR_FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1397 if (type <= SLJIT_JUMP) {
1398 PTR_FAIL_IF(push_inst(compiler, JR | S(TMP_REG2), UNMOVABLE_INS));
1399 jump->addr = compiler->size;
1400 PTR_FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1401 } else {
1402 SLJIT_ASSERT(DR(PIC_ADDR_REG) == 25 && PIC_ADDR_REG == TMP_REG2);
1403 /* Cannot be optimized out if type is >= CALL0. */
1404 jump->flags |= IS_JAL | (type >= SLJIT_CALL0 ? SLJIT_REWRITABLE_JUMP : 0);
1405 PTR_FAIL_IF(push_inst(compiler, JALR | S(TMP_REG2) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
1406 jump->addr = compiler->size;
1407 /* A NOP if type < CALL1. */
1408 PTR_FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_TEMPORARY_REG1) | TA(0) | DA(4), UNMOVABLE_INS));
1409 }
1410 return jump;
1411 }
1412
1413 #define RESOLVE_IMM1() \
1414 if (src1 & SLJIT_IMM) { \
1415 if (src1w) { \
1416 PTR_FAIL_IF(load_immediate(compiler, DR(TMP_REG1), src1w)); \
1417 src1 = TMP_REG1; \
1418 } \
1419 else \
1420 src1 = 0; \
1421 }
1422
1423 #define RESOLVE_IMM2() \
1424 if (src2 & SLJIT_IMM) { \
1425 if (src2w) { \
1426 PTR_FAIL_IF(load_immediate(compiler, DR(TMP_REG2), src2w)); \
1427 src2 = TMP_REG2; \
1428 } \
1429 else \
1430 src2 = 0; \
1431 }
1432
1433 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_cmp(struct sljit_compiler *compiler, int type,
1434 int src1, sljit_w src1w,
1435 int src2, sljit_w src2w)
1436 {
1437 struct sljit_jump *jump;
1438 int flags;
1439 sljit_ins inst;
1440
1441 CHECK_ERROR_PTR();
1442 check_sljit_emit_cmp(compiler, type, src1, src1w, src2, src2w);
1443
1444 compiler->cache_arg = 0;
1445 compiler->cache_argw = 0;
1446 flags = ((type & SLJIT_INT_OP) ? INT_DATA : WORD_DATA) | LOAD_DATA;
1447 if (src1 & SLJIT_MEM) {
1448 if (getput_arg_fast(compiler, flags, DR(TMP_REG1), src1, src1w))
1449 PTR_FAIL_IF(compiler->error);
1450 else
1451 PTR_FAIL_IF(getput_arg(compiler, flags, DR(TMP_REG1), src1, src1w, src2, src2w));
1452 src1 = TMP_REG1;
1453 }
1454 if (src2 & SLJIT_MEM) {
1455 if (getput_arg_fast(compiler, flags, DR(TMP_REG2), src2, src2w))
1456 PTR_FAIL_IF(compiler->error);
1457 else
1458 PTR_FAIL_IF(getput_arg(compiler, flags, DR(TMP_REG2), src2, src2w, 0, 0));
1459 src2 = TMP_REG2;
1460 }
1461
1462 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1463 PTR_FAIL_IF(!jump);
1464 set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1465 type &= 0xff;
1466
1467 if (type <= SLJIT_C_NOT_EQUAL) {
1468 RESOLVE_IMM1();
1469 RESOLVE_IMM2();
1470 jump->flags |= IS_BIT26_COND;
1471 if (compiler->delay_slot == MOVABLE_INS || (compiler->delay_slot != UNMOVABLE_INS && compiler->delay_slot != DR(src1) && compiler->delay_slot != DR(src2)))
1472 jump->flags |= IS_MOVABLE;
1473 PTR_FAIL_IF(push_inst(compiler, (type == SLJIT_C_EQUAL ? BNE : BEQ) | S(src1) | T(src2) | JUMP_LENGTH, UNMOVABLE_INS));
1474 }
1475 else if (type >= SLJIT_C_SIG_LESS && (((src1 & SLJIT_IMM) && (src1w == 0)) || ((src2 & SLJIT_IMM) && (src2w == 0)))) {
1476 inst = NOP;
1477 if ((src1 & SLJIT_IMM) && (src1w == 0)) {
1478 RESOLVE_IMM2();
1479 switch (type) {
1480 case SLJIT_C_SIG_LESS:
1481 inst = BLEZ;
1482 jump->flags |= IS_BIT26_COND;
1483 break;
1484 case SLJIT_C_SIG_GREATER_EQUAL:
1485 inst = BGTZ;
1486 jump->flags |= IS_BIT26_COND;
1487 break;
1488 case SLJIT_C_SIG_GREATER:
1489 inst = BGEZ;
1490 jump->flags |= IS_BIT16_COND;
1491 break;
1492 case SLJIT_C_SIG_LESS_EQUAL:
1493 inst = BLTZ;
1494 jump->flags |= IS_BIT16_COND;
1495 break;
1496 }
1497 src1 = src2;
1498 }
1499 else {
1500 RESOLVE_IMM1();
1501 switch (type) {
1502 case SLJIT_C_SIG_LESS:
1503 inst = BGEZ;
1504 jump->flags |= IS_BIT16_COND;
1505 break;
1506 case SLJIT_C_SIG_GREATER_EQUAL:
1507 inst = BLTZ;
1508 jump->flags |= IS_BIT16_COND;
1509 break;
1510 case SLJIT_C_SIG_GREATER:
1511 inst = BLEZ;
1512 jump->flags |= IS_BIT26_COND;
1513 break;
1514 case SLJIT_C_SIG_LESS_EQUAL:
1515 inst = BGTZ;
1516 jump->flags |= IS_BIT26_COND;
1517 break;
1518 }
1519 }
1520 PTR_FAIL_IF(push_inst(compiler, inst | S(src1) | JUMP_LENGTH, UNMOVABLE_INS));
1521 }
1522 else {
1523 if (type == SLJIT_C_LESS || type == SLJIT_C_GREATER_EQUAL || type == SLJIT_C_SIG_LESS || type == SLJIT_C_SIG_GREATER_EQUAL) {
1524 RESOLVE_IMM1();
1525 if ((src2 & SLJIT_IMM) && src2w <= SIMM_MAX && src2w >= SIMM_MIN)
1526 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_C_LESS_EQUAL ? SLTIU : SLTI) | S(src1) | T(TMP_REG1) | IMM(src2w), DR(TMP_REG1)));
1527 else {
1528 RESOLVE_IMM2();
1529 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_C_LESS_EQUAL ? SLTU : SLT) | S(src1) | T(src2) | D(TMP_REG1), DR(TMP_REG1)));
1530 }
1531 type = (type == SLJIT_C_LESS || type == SLJIT_C_SIG_LESS) ? SLJIT_C_NOT_EQUAL : SLJIT_C_EQUAL;
1532 }
1533 else {
1534 RESOLVE_IMM2();
1535 if ((src1 & SLJIT_IMM) && src1w <= SIMM_MAX && src1w >= SIMM_MIN)
1536 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_C_LESS_EQUAL ? SLTIU : SLTI) | S(src2) | T(TMP_REG1) | IMM(src1w), DR(TMP_REG1)));
1537 else {
1538 RESOLVE_IMM1();
1539 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_C_LESS_EQUAL ? SLTU : SLT) | S(src2) | T(src1) | D(TMP_REG1), DR(TMP_REG1)));
1540 }
1541 type = (type == SLJIT_C_GREATER || type == SLJIT_C_SIG_GREATER) ? SLJIT_C_NOT_EQUAL : SLJIT_C_EQUAL;
1542 }
1543
1544 jump->flags |= IS_BIT26_COND;
1545 PTR_FAIL_IF(push_inst(compiler, (type == SLJIT_C_EQUAL ? BNE : BEQ) | S(TMP_REG1) | TA(0) | JUMP_LENGTH, UNMOVABLE_INS));
1546 }
1547
1548 PTR_FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1549 PTR_FAIL_IF(push_inst(compiler, JR | S(TMP_REG2), UNMOVABLE_INS));
1550 jump->addr = compiler->size;
1551 PTR_FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1552 return jump;
1553 }
1554
1555 #undef RESOLVE_IMM1
1556 #undef RESOLVE_IMM2
1557
1558 #undef JUMP_LENGTH
1559 #undef BR_Z
1560 #undef BR_NZ
1561 #undef BR_T
1562 #undef BR_F
1563
1564 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_ijump(struct sljit_compiler *compiler, int type, int src, sljit_w srcw)
1565 {
1566 int src_r = TMP_REG2;
1567 struct sljit_jump *jump = NULL;
1568
1569 CHECK_ERROR();
1570 check_sljit_emit_ijump(compiler, type, src, srcw);
1571
1572 if (src >= SLJIT_TEMPORARY_REG1 && src <= SLJIT_NO_REGISTERS) {
1573 if (DR(src) != 4)
1574 src_r = src;
1575 else
1576 FAIL_IF(push_inst(compiler, ADDU_W | S(src) | TA(0) | D(TMP_REG2), DR(TMP_REG2)));
1577 }
1578
1579 if (type >= SLJIT_CALL0) {
1580 SLJIT_ASSERT(DR(PIC_ADDR_REG) == 25 && PIC_ADDR_REG == TMP_REG2);
1581 if (src & (SLJIT_IMM | SLJIT_MEM)) {
1582 if (src & SLJIT_IMM)
1583 FAIL_IF(load_immediate(compiler, DR(PIC_ADDR_REG), srcw));
1584 else {
1585 SLJIT_ASSERT(src_r == TMP_REG2 && (src & SLJIT_MEM));
1586 FAIL_IF(emit_op(compiler, SLJIT_MOV, WORD_DATA, TMP_REG2, 0, TMP_REG1, 0, src, srcw));
1587 }
1588 FAIL_IF(push_inst(compiler, JALR | S(PIC_ADDR_REG) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
1589 /* We need an extra instruction in any case. */
1590 return push_inst(compiler, ADDU_W | S(SLJIT_TEMPORARY_REG1) | TA(0) | DA(4), UNMOVABLE_INS);
1591 }
1592
1593 /* Register input. */
1594 if (type >= SLJIT_CALL1)
1595 FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_TEMPORARY_REG1) | TA(0) | DA(4), 4));
1596 FAIL_IF(push_inst(compiler, JALR | S(src_r) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
1597 return push_inst(compiler, ADDU_W | S(src_r) | TA(0) | D(PIC_ADDR_REG), UNMOVABLE_INS);
1598 }
1599
1600 if (src & SLJIT_IMM) {
1601 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1602 FAIL_IF(!jump);
1603 set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_JAL : 0));
1604 jump->u.target = srcw;
1605
1606 if (compiler->delay_slot != UNMOVABLE_INS)
1607 jump->flags |= IS_MOVABLE;
1608
1609 FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1610 }
1611 else if (src & SLJIT_MEM)
1612 FAIL_IF(emit_op(compiler, SLJIT_MOV, WORD_DATA, TMP_REG2, 0, TMP_REG1, 0, src, srcw));
1613
1614 FAIL_IF(push_inst(compiler, JR | S(src_r), UNMOVABLE_INS));
1615 if (jump)
1616 jump->addr = compiler->size;
1617 FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1618 return SLJIT_SUCCESS;
1619 }
1620
1621 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_cond_value(struct sljit_compiler *compiler, int op, int dst, sljit_w dstw, int type)
1622 {
1623 int sugg_dst_ar, dst_ar;
1624
1625 CHECK_ERROR();
1626 check_sljit_emit_cond_value(compiler, op, dst, dstw, type);
1627
1628 if (dst == SLJIT_UNUSED)
1629 return SLJIT_SUCCESS;
1630
1631 sugg_dst_ar = DR((op == SLJIT_MOV && dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) ? dst : TMP_REG2);
1632
1633 switch (type) {
1634 case SLJIT_C_EQUAL:
1635 case SLJIT_C_NOT_EQUAL:
1636 FAIL_IF(push_inst(compiler, SLTIU | SA(EQUAL_FLAG) | TA(sugg_dst_ar) | IMM(1), sugg_dst_ar));
1637 dst_ar = sugg_dst_ar;
1638 break;
1639 case SLJIT_C_LESS:
1640 case SLJIT_C_GREATER_EQUAL:
1641 case SLJIT_C_FLOAT_LESS:
1642 case SLJIT_C_FLOAT_GREATER_EQUAL:
1643 dst_ar = ULESS_FLAG;
1644 break;
1645 case SLJIT_C_GREATER:
1646 case SLJIT_C_LESS_EQUAL:
1647 case SLJIT_C_FLOAT_GREATER:
1648 case SLJIT_C_FLOAT_LESS_EQUAL:
1649 dst_ar = UGREATER_FLAG;
1650 break;
1651 case SLJIT_C_SIG_LESS:
1652 case SLJIT_C_SIG_GREATER_EQUAL:
1653 dst_ar = LESS_FLAG;
1654 break;
1655 case SLJIT_C_SIG_GREATER:
1656 case SLJIT_C_SIG_LESS_EQUAL:
1657 dst_ar = GREATER_FLAG;
1658 break;
1659 case SLJIT_C_OVERFLOW:
1660 case SLJIT_C_NOT_OVERFLOW:
1661 dst_ar = OVERFLOW_FLAG;
1662 break;
1663 case SLJIT_C_MUL_OVERFLOW:
1664 case SLJIT_C_MUL_NOT_OVERFLOW:
1665 FAIL_IF(push_inst(compiler, SLTIU | SA(OVERFLOW_FLAG) | TA(sugg_dst_ar) | IMM(1), sugg_dst_ar));
1666 dst_ar = sugg_dst_ar;
1667 type ^= 0x1; /* Flip type bit for the XORI below. */
1668 break;
1669 case SLJIT_C_FLOAT_EQUAL:
1670 case SLJIT_C_FLOAT_NOT_EQUAL:
1671 dst_ar = EQUAL_FLAG;
1672 break;
1673
1674 case SLJIT_C_FLOAT_NAN:
1675 case SLJIT_C_FLOAT_NOT_NAN:
1676 FAIL_IF(push_inst(compiler, CFC1 | TA(sugg_dst_ar) | DA(FCSR_REG), sugg_dst_ar));
1677 FAIL_IF(push_inst(compiler, SRL | TA(sugg_dst_ar) | DA(sugg_dst_ar) | SH_IMM(23), sugg_dst_ar));
1678 FAIL_IF(push_inst(compiler, ANDI | SA(sugg_dst_ar) | TA(sugg_dst_ar) | IMM(1), sugg_dst_ar));
1679 dst_ar = sugg_dst_ar;
1680 break;
1681
1682 default:
1683 SLJIT_ASSERT_STOP();
1684 dst_ar = sugg_dst_ar;
1685 break;
1686 }
1687
1688 if (type & 0x1) {
1689 FAIL_IF(push_inst(compiler, XORI | SA(dst_ar) | TA(sugg_dst_ar) | IMM(1), sugg_dst_ar));
1690 dst_ar = sugg_dst_ar;
1691 }
1692
1693 if (GET_OPCODE(op) == SLJIT_OR) {
1694 if (DR(TMP_REG2) != dst_ar)
1695 FAIL_IF(push_inst(compiler, ADDU_W | SA(dst_ar) | TA(0) | D(TMP_REG2), DR(TMP_REG2)));
1696 return emit_op(compiler, op, CUMULATIVE_OP | LOGICAL_OP | IMM_OP, dst, dstw, dst, dstw, TMP_REG2, 0);
1697 }
1698
1699 if (dst & SLJIT_MEM)
1700 return emit_op_mem(compiler, WORD_DATA, dst_ar, dst, dstw);
1701
1702 if (sugg_dst_ar != dst_ar)
1703 return push_inst(compiler, ADDU_W | SA(dst_ar) | TA(0) | DA(sugg_dst_ar), sugg_dst_ar);
1704 return SLJIT_SUCCESS;
1705 }
1706
1707 SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, int dst, sljit_w dstw, sljit_w init_value)
1708 {
1709 struct sljit_const *const_;
1710 int reg;
1711
1712 CHECK_ERROR_PTR();
1713 check_sljit_emit_const(compiler, dst, dstw, init_value);
1714
1715 const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const));
1716 PTR_FAIL_IF(!const_);
1717 set_const(const_, compiler);
1718
1719 reg = (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) ? dst : TMP_REG2;
1720
1721 PTR_FAIL_IF(emit_const(compiler, reg, init_value));
1722
1723 if (dst & SLJIT_MEM)
1724 PTR_FAIL_IF(emit_op(compiler, SLJIT_MOV, WORD_DATA, dst, dstw, TMP_REG1, 0, TMP_REG2, 0));
1725 return const_;
1726 }

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