Annotation of embedaddon/pcre/sljit/sljitNativeMIPS_common.c, revision 1.1.1.1
1.1 misho 1: /*
2: * Stack-less Just-In-Time compiler
3: *
4: * Copyright 2009-2010 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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