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_ARM_V7 && SLJIT_CONFIG_ARM_V7)
30: return "arm-v7";
31: #elif (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
32: return "arm-v5";
33: #else
34: #error "Internal error: Unknown ARM architecture"
35: #endif
36: }
37:
38: /* Last register + 1. */
39: #define TMP_REG1 (SLJIT_NO_REGISTERS + 1)
40: #define TMP_REG2 (SLJIT_NO_REGISTERS + 2)
41: #define TMP_REG3 (SLJIT_NO_REGISTERS + 3)
42: #define TMP_PC (SLJIT_NO_REGISTERS + 4)
43:
44: #define TMP_FREG1 (SLJIT_FLOAT_REG4 + 1)
45: #define TMP_FREG2 (SLJIT_FLOAT_REG4 + 2)
46:
47: /* In ARM instruction words.
48: Cache lines are usually 32 byte aligned. */
49: #define CONST_POOL_ALIGNMENT 8
50: #define CONST_POOL_EMPTY 0xffffffff
51:
52: #define ALIGN_INSTRUCTION(ptr) \
53: (sljit_uw*)(((sljit_uw)(ptr) + (CONST_POOL_ALIGNMENT * sizeof(sljit_uw)) - 1) & ~((CONST_POOL_ALIGNMENT * sizeof(sljit_uw)) - 1))
54: #define MAX_DIFFERENCE(max_diff) \
55: (((max_diff) / (int)sizeof(sljit_uw)) - (CONST_POOL_ALIGNMENT - 1))
56:
57: /* See sljit_emit_enter if you want to change them. */
58: static SLJIT_CONST sljit_ub reg_map[SLJIT_NO_REGISTERS + 5] = {
59: 0, 0, 1, 2, 10, 11, 4, 5, 6, 7, 8, 13, 3, 12, 14, 15
60: };
61:
62: #define RM(rm) (reg_map[rm])
63: #define RD(rd) (reg_map[rd] << 12)
64: #define RN(rn) (reg_map[rn] << 16)
65:
66: /* --------------------------------------------------------------------- */
67: /* Instrucion forms */
68: /* --------------------------------------------------------------------- */
69:
70: /* The instruction includes the AL condition.
71: INST_NAME - CONDITIONAL remove this flag. */
72: #define COND_MASK 0xf0000000
73: #define CONDITIONAL 0xe0000000
74: #define PUSH_POOL 0xff000000
75:
76: /* DP - Data Processing instruction (use with EMIT_DATA_PROCESS_INS). */
77: #define ADC_DP 0x5
78: #define ADD_DP 0x4
79: #define AND_DP 0x0
80: #define B 0xea000000
81: #define BIC_DP 0xe
82: #define BL 0xeb000000
83: #define BLX 0xe12fff30
84: #define BX 0xe12fff10
85: #define CLZ 0xe16f0f10
86: #define CMP_DP 0xa
87: #define DEBUGGER 0xe1200070
88: #define EOR_DP 0x1
89: #define MOV_DP 0xd
90: #define MUL 0xe0000090
91: #define MVN_DP 0xf
92: #define NOP 0xe1a00000
93: #define ORR_DP 0xc
94: #define PUSH 0xe92d0000
95: #define POP 0xe8bd0000
96: #define RSB_DP 0x3
97: #define RSC_DP 0x7
98: #define SBC_DP 0x6
99: #define SMULL 0xe0c00090
100: #define SUB_DP 0x2
101: #define VABS_F64 0xeeb00bc0
102: #define VADD_F64 0xee300b00
103: #define VCMP_F64 0xeeb40b40
104: #define VDIV_F64 0xee800b00
105: #define VMOV_F64 0xeeb00b40
106: #define VMRS 0xeef1fa10
107: #define VMUL_F64 0xee200b00
108: #define VNEG_F64 0xeeb10b40
109: #define VSTR 0xed000b00
110: #define VSUB_F64 0xee300b40
111:
112: #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
113: /* Arm v7 specific instructions. */
114: #define MOVW 0xe3000000
115: #define MOVT 0xe3400000
116: #define SXTB 0xe6af0070
117: #define SXTH 0xe6bf0070
118: #define UXTB 0xe6ef0070
119: #define UXTH 0xe6ff0070
120: #endif
121:
122: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
123:
124: static int push_cpool(struct sljit_compiler *compiler)
125: {
126: /* Pushing the constant pool into the instruction stream. */
127: sljit_uw* inst;
128: sljit_uw* cpool_ptr;
129: sljit_uw* cpool_end;
130: int i;
131:
132: /* The label could point the address after the constant pool. */
133: if (compiler->last_label && compiler->last_label->size == compiler->size)
134: compiler->last_label->size += compiler->cpool_fill + (CONST_POOL_ALIGNMENT - 1) + 1;
135:
136: SLJIT_ASSERT(compiler->cpool_fill > 0 && compiler->cpool_fill <= CPOOL_SIZE);
137: inst = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
138: FAIL_IF(!inst);
139: compiler->size++;
140: *inst = 0xff000000 | compiler->cpool_fill;
141:
142: for (i = 0; i < CONST_POOL_ALIGNMENT - 1; i++) {
143: inst = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
144: FAIL_IF(!inst);
145: compiler->size++;
146: *inst = 0;
147: }
148:
149: cpool_ptr = compiler->cpool;
150: cpool_end = cpool_ptr + compiler->cpool_fill;
151: while (cpool_ptr < cpool_end) {
152: inst = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
153: FAIL_IF(!inst);
154: compiler->size++;
155: *inst = *cpool_ptr++;
156: }
157: compiler->cpool_diff = CONST_POOL_EMPTY;
158: compiler->cpool_fill = 0;
159: return SLJIT_SUCCESS;
160: }
161:
162: static int push_inst(struct sljit_compiler *compiler, sljit_uw inst)
163: {
164: sljit_uw* ptr;
165:
166: if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092)))
167: FAIL_IF(push_cpool(compiler));
168:
169: ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
170: FAIL_IF(!ptr);
171: compiler->size++;
172: *ptr = inst;
173: return SLJIT_SUCCESS;
174: }
175:
176: static int push_inst_with_literal(struct sljit_compiler *compiler, sljit_uw inst, sljit_uw literal)
177: {
178: sljit_uw* ptr;
179: sljit_uw cpool_index = CPOOL_SIZE;
180: sljit_uw* cpool_ptr;
181: sljit_uw* cpool_end;
182: sljit_ub* cpool_unique_ptr;
183:
184: if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092)))
185: FAIL_IF(push_cpool(compiler));
186: else if (compiler->cpool_fill > 0) {
187: cpool_ptr = compiler->cpool;
188: cpool_end = cpool_ptr + compiler->cpool_fill;
189: cpool_unique_ptr = compiler->cpool_unique;
190: do {
191: if ((*cpool_ptr == literal) && !(*cpool_unique_ptr)) {
192: cpool_index = cpool_ptr - compiler->cpool;
193: break;
194: }
195: cpool_ptr++;
196: cpool_unique_ptr++;
197: } while (cpool_ptr < cpool_end);
198: }
199:
200: if (cpool_index == CPOOL_SIZE) {
201: /* Must allocate a new entry in the literal pool. */
202: if (compiler->cpool_fill < CPOOL_SIZE) {
203: cpool_index = compiler->cpool_fill;
204: compiler->cpool_fill++;
205: }
206: else {
207: FAIL_IF(push_cpool(compiler));
208: cpool_index = 0;
209: compiler->cpool_fill = 1;
210: }
211: }
212:
213: SLJIT_ASSERT((inst & 0xfff) == 0);
214: ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
215: FAIL_IF(!ptr);
216: compiler->size++;
217: *ptr = inst | cpool_index;
218:
219: compiler->cpool[cpool_index] = literal;
220: compiler->cpool_unique[cpool_index] = 0;
221: if (compiler->cpool_diff == CONST_POOL_EMPTY)
222: compiler->cpool_diff = compiler->size;
223: return SLJIT_SUCCESS;
224: }
225:
226: static int push_inst_with_unique_literal(struct sljit_compiler *compiler, sljit_uw inst, sljit_uw literal)
227: {
228: sljit_uw* ptr;
229: if (SLJIT_UNLIKELY((compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092)) || compiler->cpool_fill >= CPOOL_SIZE))
230: FAIL_IF(push_cpool(compiler));
231:
232: SLJIT_ASSERT(compiler->cpool_fill < CPOOL_SIZE && (inst & 0xfff) == 0);
233: ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
234: FAIL_IF(!ptr);
235: compiler->size++;
236: *ptr = inst | compiler->cpool_fill;
237:
238: compiler->cpool[compiler->cpool_fill] = literal;
239: compiler->cpool_unique[compiler->cpool_fill] = 1;
240: compiler->cpool_fill++;
241: if (compiler->cpool_diff == CONST_POOL_EMPTY)
242: compiler->cpool_diff = compiler->size;
243: return SLJIT_SUCCESS;
244: }
245:
246: static SLJIT_INLINE int prepare_blx(struct sljit_compiler *compiler)
247: {
248: /* Place for at least two instruction (doesn't matter whether the first has a literal). */
249: if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4088)))
250: return push_cpool(compiler);
251: return SLJIT_SUCCESS;
252: }
253:
254: static SLJIT_INLINE int emit_blx(struct sljit_compiler *compiler)
255: {
256: /* Must follow tightly the previous instruction (to be able to convert it to bl instruction). */
257: SLJIT_ASSERT(compiler->cpool_diff == CONST_POOL_EMPTY || compiler->size - compiler->cpool_diff < MAX_DIFFERENCE(4092));
258: return push_inst(compiler, BLX | RM(TMP_REG1));
259: }
260:
261: static sljit_uw patch_pc_relative_loads(sljit_uw *last_pc_patch, sljit_uw *code_ptr, sljit_uw* const_pool, sljit_uw cpool_size)
262: {
263: sljit_uw diff;
264: sljit_uw ind;
265: sljit_uw counter = 0;
266: sljit_uw* clear_const_pool = const_pool;
267: sljit_uw* clear_const_pool_end = const_pool + cpool_size;
268:
269: SLJIT_ASSERT(const_pool - code_ptr <= CONST_POOL_ALIGNMENT);
270: /* Set unused flag for all literals in the constant pool.
271: I.e.: unused literals can belong to branches, which can be encoded as B or BL.
272: We can "compress" the constant pool by discarding these literals. */
273: while (clear_const_pool < clear_const_pool_end)
274: *clear_const_pool++ = (sljit_uw)(-1);
275:
276: while (last_pc_patch < code_ptr) {
277: /* Data transfer instruction with Rn == r15. */
278: if ((*last_pc_patch & 0x0c0f0000) == 0x040f0000) {
279: diff = const_pool - last_pc_patch;
280: ind = (*last_pc_patch) & 0xfff;
281:
282: /* Must be a load instruction with immediate offset. */
283: SLJIT_ASSERT(ind < cpool_size && !(*last_pc_patch & (1 << 25)) && (*last_pc_patch & (1 << 20)));
284: if ((int)const_pool[ind] < 0) {
285: const_pool[ind] = counter;
286: ind = counter;
287: counter++;
288: }
289: else
290: ind = const_pool[ind];
291:
292: SLJIT_ASSERT(diff >= 1);
293: if (diff >= 2 || ind > 0) {
294: diff = (diff + ind - 2) << 2;
295: SLJIT_ASSERT(diff <= 0xfff);
296: *last_pc_patch = (*last_pc_patch & ~0xfff) | diff;
297: }
298: else
299: *last_pc_patch = (*last_pc_patch & ~(0xfff | (1 << 23))) | 0x004;
300: }
301: last_pc_patch++;
302: }
303: return counter;
304: }
305:
306: /* In some rare ocasions we may need future patches. The probability is close to 0 in practice. */
307: struct future_patch {
308: struct future_patch* next;
309: int index;
310: int value;
311: };
312:
313: static SLJIT_INLINE int resolve_const_pool_index(struct future_patch **first_patch, sljit_uw cpool_current_index, sljit_uw *cpool_start_address, sljit_uw *buf_ptr)
314: {
315: int value;
316: struct future_patch *curr_patch, *prev_patch;
317:
318: /* Using the values generated by patch_pc_relative_loads. */
319: if (!*first_patch)
320: value = (int)cpool_start_address[cpool_current_index];
321: else {
322: curr_patch = *first_patch;
323: prev_patch = 0;
324: while (1) {
325: if (!curr_patch) {
326: value = (int)cpool_start_address[cpool_current_index];
327: break;
328: }
329: if ((sljit_uw)curr_patch->index == cpool_current_index) {
330: value = curr_patch->value;
331: if (prev_patch)
332: prev_patch->next = curr_patch->next;
333: else
334: *first_patch = curr_patch->next;
335: SLJIT_FREE(curr_patch);
336: break;
337: }
338: prev_patch = curr_patch;
339: curr_patch = curr_patch->next;
340: }
341: }
342:
343: if (value >= 0) {
344: if ((sljit_uw)value > cpool_current_index) {
345: curr_patch = (struct future_patch*)SLJIT_MALLOC(sizeof(struct future_patch));
346: if (!curr_patch) {
347: while (*first_patch) {
348: curr_patch = *first_patch;
349: *first_patch = (*first_patch)->next;
350: SLJIT_FREE(curr_patch);
351: }
352: return SLJIT_ERR_ALLOC_FAILED;
353: }
354: curr_patch->next = *first_patch;
355: curr_patch->index = value;
356: curr_patch->value = cpool_start_address[value];
357: *first_patch = curr_patch;
358: }
359: cpool_start_address[value] = *buf_ptr;
360: }
361: return SLJIT_SUCCESS;
362: }
363:
364: #else
365:
366: static int push_inst(struct sljit_compiler *compiler, sljit_uw inst)
367: {
368: sljit_uw* ptr;
369:
370: ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
371: FAIL_IF(!ptr);
372: compiler->size++;
373: *ptr = inst;
374: return SLJIT_SUCCESS;
375: }
376:
377: static SLJIT_INLINE int emit_imm(struct sljit_compiler *compiler, int reg, sljit_w imm)
378: {
379: FAIL_IF(push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | (imm & 0xfff)));
380: return push_inst(compiler, MOVT | RD(reg) | ((imm >> 12) & 0xf0000) | ((imm >> 16) & 0xfff));
381: }
382:
383: #endif
384:
385: static SLJIT_INLINE int detect_jump_type(struct sljit_jump *jump, sljit_uw *code_ptr, sljit_uw *code)
386: {
387: sljit_w diff;
388:
389: if (jump->flags & SLJIT_REWRITABLE_JUMP)
390: return 0;
391:
392: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
393: if (jump->flags & IS_BL)
394: code_ptr--;
395:
396: if (jump->flags & JUMP_ADDR)
397: diff = ((sljit_w)jump->u.target - (sljit_w)(code_ptr + 2));
398: else {
399: SLJIT_ASSERT(jump->flags & JUMP_LABEL);
400: diff = ((sljit_w)(code + jump->u.label->size) - (sljit_w)(code_ptr + 2));
401: }
402:
403: /* Branch to Thumb code has not been optimized yet. */
404: if (diff & 0x3)
405: return 0;
406:
407: diff >>= 2;
408: if (jump->flags & IS_BL) {
409: if (diff <= 0x01ffffff && diff >= -0x02000000) {
410: *code_ptr = (BL - CONDITIONAL) | (*(code_ptr + 1) & COND_MASK);
411: jump->flags |= PATCH_B;
412: return 1;
413: }
414: }
415: else {
416: if (diff <= 0x01ffffff && diff >= -0x02000000) {
417: *code_ptr = (B - CONDITIONAL) | (*code_ptr & COND_MASK);
418: jump->flags |= PATCH_B;
419: }
420: }
421: #else
422: if (jump->flags & JUMP_ADDR)
423: diff = ((sljit_w)jump->u.target - (sljit_w)code_ptr);
424: else {
425: SLJIT_ASSERT(jump->flags & JUMP_LABEL);
426: diff = ((sljit_w)(code + jump->u.label->size) - (sljit_w)code_ptr);
427: }
428:
429: /* Branch to Thumb code has not been optimized yet. */
430: if (diff & 0x3)
431: return 0;
432:
433: diff >>= 2;
434: if (diff <= 0x01ffffff && diff >= -0x02000000) {
435: code_ptr -= 2;
436: *code_ptr = ((jump->flags & IS_BL) ? (BL - CONDITIONAL) : (B - CONDITIONAL)) | (code_ptr[2] & COND_MASK);
437: jump->flags |= PATCH_B;
438: return 1;
439: }
440: #endif
441: return 0;
442: }
443:
444: static SLJIT_INLINE void inline_set_jump_addr(sljit_uw addr, sljit_uw new_addr, int flush)
445: {
446: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
447: sljit_uw *ptr = (sljit_uw*)addr;
448: sljit_uw *inst = (sljit_uw*)ptr[0];
449: sljit_uw mov_pc = ptr[1];
450: int bl = (mov_pc & 0x0000f000) != RD(TMP_PC);
451: sljit_w diff = (sljit_w)(((sljit_w)new_addr - (sljit_w)(inst + 2)) >> 2);
452:
453: if (diff <= 0x7fffff && diff >= -0x800000) {
454: /* Turn to branch. */
455: if (!bl) {
456: inst[0] = (mov_pc & COND_MASK) | (B - CONDITIONAL) | (diff & 0xffffff);
457: if (flush) {
458: SLJIT_CACHE_FLUSH(inst, inst + 1);
459: }
460: } else {
461: inst[0] = (mov_pc & COND_MASK) | (BL - CONDITIONAL) | (diff & 0xffffff);
462: inst[1] = NOP;
463: if (flush) {
464: SLJIT_CACHE_FLUSH(inst, inst + 2);
465: }
466: }
467: } else {
468: /* Get the position of the constant. */
469: if (mov_pc & (1 << 23))
470: ptr = inst + ((mov_pc & 0xfff) >> 2) + 2;
471: else
472: ptr = inst + 1;
473:
474: if (*inst != mov_pc) {
475: inst[0] = mov_pc;
476: if (!bl) {
477: if (flush) {
478: SLJIT_CACHE_FLUSH(inst, inst + 1);
479: }
480: } else {
481: inst[1] = BLX | RM(TMP_REG1);
482: if (flush) {
483: SLJIT_CACHE_FLUSH(inst, inst + 2);
484: }
485: }
486: }
487: *ptr = new_addr;
488: }
489: #else
490: sljit_uw *inst = (sljit_uw*)addr;
491: SLJIT_ASSERT((inst[0] & 0xfff00000) == MOVW && (inst[1] & 0xfff00000) == MOVT);
492: inst[0] = MOVW | (inst[0] & 0xf000) | ((new_addr << 4) & 0xf0000) | (new_addr & 0xfff);
493: inst[1] = MOVT | (inst[1] & 0xf000) | ((new_addr >> 12) & 0xf0000) | ((new_addr >> 16) & 0xfff);
494: if (flush) {
495: SLJIT_CACHE_FLUSH(inst, inst + 2);
496: }
497: #endif
498: }
499:
500: static sljit_uw get_immediate(sljit_uw imm);
501:
502: static SLJIT_INLINE void inline_set_const(sljit_uw addr, sljit_w new_constant, int flush)
503: {
504: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
505: sljit_uw *ptr = (sljit_uw*)addr;
506: sljit_uw *inst = (sljit_uw*)ptr[0];
507: sljit_uw ldr_literal = ptr[1];
508: sljit_uw src2;
509:
510: src2 = get_immediate(new_constant);
511: if (src2) {
512: *inst = 0xe3a00000 | (ldr_literal & 0xf000) | src2;
513: if (flush) {
514: SLJIT_CACHE_FLUSH(inst, inst + 1);
515: }
516: return;
517: }
518:
519: src2 = get_immediate(~new_constant);
520: if (src2) {
521: *inst = 0xe3e00000 | (ldr_literal & 0xf000) | src2;
522: if (flush) {
523: SLJIT_CACHE_FLUSH(inst, inst + 1);
524: }
525: return;
526: }
527:
528: if (ldr_literal & (1 << 23))
529: ptr = inst + ((ldr_literal & 0xfff) >> 2) + 2;
530: else
531: ptr = inst + 1;
532:
533: if (*inst != ldr_literal) {
534: *inst = ldr_literal;
535: if (flush) {
536: SLJIT_CACHE_FLUSH(inst, inst + 1);
537: }
538: }
539: *ptr = new_constant;
540: #else
541: sljit_uw *inst = (sljit_uw*)addr;
542: SLJIT_ASSERT((inst[0] & 0xfff00000) == MOVW && (inst[1] & 0xfff00000) == MOVT);
543: inst[0] = MOVW | (inst[0] & 0xf000) | ((new_constant << 4) & 0xf0000) | (new_constant & 0xfff);
544: inst[1] = MOVT | (inst[1] & 0xf000) | ((new_constant >> 12) & 0xf0000) | ((new_constant >> 16) & 0xfff);
545: if (flush) {
546: SLJIT_CACHE_FLUSH(inst, inst + 2);
547: }
548: #endif
549: }
550:
551: SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler)
552: {
553: struct sljit_memory_fragment *buf;
554: sljit_uw *code;
555: sljit_uw *code_ptr;
556: sljit_uw *buf_ptr;
557: sljit_uw *buf_end;
558: sljit_uw size;
559: sljit_uw word_count;
560: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
561: sljit_uw cpool_size;
562: sljit_uw cpool_skip_alignment;
563: sljit_uw cpool_current_index;
564: sljit_uw *cpool_start_address;
565: sljit_uw *last_pc_patch;
566: struct future_patch *first_patch;
567: #endif
568:
569: struct sljit_label *label;
570: struct sljit_jump *jump;
571: struct sljit_const *const_;
572:
573: CHECK_ERROR_PTR();
574: check_sljit_generate_code(compiler);
575: reverse_buf(compiler);
576:
577: /* Second code generation pass. */
578: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
579: size = compiler->size + (compiler->patches << 1);
580: if (compiler->cpool_fill > 0)
581: size += compiler->cpool_fill + CONST_POOL_ALIGNMENT - 1;
582: #else
583: size = compiler->size;
584: #endif
585: code = (sljit_uw*)SLJIT_MALLOC_EXEC(size * sizeof(sljit_uw));
586: PTR_FAIL_WITH_EXEC_IF(code);
587: buf = compiler->buf;
588:
589: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
590: cpool_size = 0;
591: cpool_skip_alignment = 0;
592: cpool_current_index = 0;
593: cpool_start_address = NULL;
594: first_patch = NULL;
595: last_pc_patch = code;
596: #endif
597:
598: code_ptr = code;
599: word_count = 0;
600:
601: label = compiler->labels;
602: jump = compiler->jumps;
603: const_ = compiler->consts;
604:
605: if (label && label->size == 0) {
606: label->addr = (sljit_uw)code;
607: label->size = 0;
608: label = label->next;
609: }
610:
611: do {
612: buf_ptr = (sljit_uw*)buf->memory;
613: buf_end = buf_ptr + (buf->used_size >> 2);
614: do {
615: word_count++;
616: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
617: if (cpool_size > 0) {
618: if (cpool_skip_alignment > 0) {
619: buf_ptr++;
620: cpool_skip_alignment--;
621: }
622: else {
623: if (SLJIT_UNLIKELY(resolve_const_pool_index(&first_patch, cpool_current_index, cpool_start_address, buf_ptr))) {
624: SLJIT_FREE_EXEC(code);
625: compiler->error = SLJIT_ERR_ALLOC_FAILED;
626: return NULL;
627: }
628: buf_ptr++;
629: if (++cpool_current_index >= cpool_size) {
630: SLJIT_ASSERT(!first_patch);
631: cpool_size = 0;
632: if (label && label->size == word_count) {
633: /* Points after the current instruction. */
634: label->addr = (sljit_uw)code_ptr;
635: label->size = code_ptr - code;
636: label = label->next;
637: }
638: }
639: }
640: }
641: else if ((*buf_ptr & 0xff000000) != PUSH_POOL) {
642: #endif
643: *code_ptr = *buf_ptr++;
644: /* These structures are ordered by their address. */
645: SLJIT_ASSERT(!label || label->size >= word_count);
646: SLJIT_ASSERT(!jump || jump->addr >= word_count);
647: SLJIT_ASSERT(!const_ || const_->addr >= word_count);
648: if (jump && jump->addr == word_count) {
649: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
650: if (detect_jump_type(jump, code_ptr, code))
651: code_ptr--;
652: jump->addr = (sljit_uw)code_ptr;
653: #else
654: jump->addr = (sljit_uw)(code_ptr - 2);
655: if (detect_jump_type(jump, code_ptr, code))
656: code_ptr -= 2;
657: #endif
658: jump = jump->next;
659: }
660: if (label && label->size == word_count) {
661: /* code_ptr can be affected above. */
662: label->addr = (sljit_uw)(code_ptr + 1);
663: label->size = (code_ptr + 1) - code;
664: label = label->next;
665: }
666: if (const_ && const_->addr == word_count) {
667: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
668: const_->addr = (sljit_uw)code_ptr;
669: #else
670: const_->addr = (sljit_uw)(code_ptr - 1);
671: #endif
672: const_ = const_->next;
673: }
674: code_ptr++;
675: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
676: }
677: else {
678: /* Fortunately, no need to shift. */
679: cpool_size = *buf_ptr++ & ~PUSH_POOL;
680: SLJIT_ASSERT(cpool_size > 0);
681: cpool_start_address = ALIGN_INSTRUCTION(code_ptr + 1);
682: cpool_current_index = patch_pc_relative_loads(last_pc_patch, code_ptr, cpool_start_address, cpool_size);
683: if (cpool_current_index > 0) {
684: /* Unconditional branch. */
685: *code_ptr = B | (((cpool_start_address - code_ptr) + cpool_current_index - 2) & ~PUSH_POOL);
686: code_ptr = cpool_start_address + cpool_current_index;
687: }
688: cpool_skip_alignment = CONST_POOL_ALIGNMENT - 1;
689: cpool_current_index = 0;
690: last_pc_patch = code_ptr;
691: }
692: #endif
693: } while (buf_ptr < buf_end);
694: buf = buf->next;
695: } while (buf);
696:
697: SLJIT_ASSERT(!label);
698: SLJIT_ASSERT(!jump);
699: SLJIT_ASSERT(!const_);
700:
701: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
702: SLJIT_ASSERT(cpool_size == 0);
703: if (compiler->cpool_fill > 0) {
704: cpool_start_address = ALIGN_INSTRUCTION(code_ptr);
705: cpool_current_index = patch_pc_relative_loads(last_pc_patch, code_ptr, cpool_start_address, compiler->cpool_fill);
706: if (cpool_current_index > 0)
707: code_ptr = cpool_start_address + cpool_current_index;
708:
709: buf_ptr = compiler->cpool;
710: buf_end = buf_ptr + compiler->cpool_fill;
711: cpool_current_index = 0;
712: while (buf_ptr < buf_end) {
713: if (SLJIT_UNLIKELY(resolve_const_pool_index(&first_patch, cpool_current_index, cpool_start_address, buf_ptr))) {
714: SLJIT_FREE_EXEC(code);
715: compiler->error = SLJIT_ERR_ALLOC_FAILED;
716: return NULL;
717: }
718: buf_ptr++;
719: cpool_current_index++;
720: }
721: SLJIT_ASSERT(!first_patch);
722: }
723: #endif
724:
725: jump = compiler->jumps;
726: while (jump) {
727: buf_ptr = (sljit_uw*)jump->addr;
728:
729: if (jump->flags & PATCH_B) {
730: if (!(jump->flags & JUMP_ADDR)) {
731: SLJIT_ASSERT(jump->flags & JUMP_LABEL);
732: SLJIT_ASSERT(((sljit_w)jump->u.label->addr - (sljit_w)(buf_ptr + 2)) <= 0x01ffffff && ((sljit_w)jump->u.label->addr - (sljit_w)(buf_ptr + 2)) >= -0x02000000);
733: *buf_ptr |= (((sljit_w)jump->u.label->addr - (sljit_w)(buf_ptr + 2)) >> 2) & 0x00ffffff;
734: }
735: else {
736: SLJIT_ASSERT(((sljit_w)jump->u.target - (sljit_w)(buf_ptr + 2)) <= 0x01ffffff && ((sljit_w)jump->u.target - (sljit_w)(buf_ptr + 2)) >= -0x02000000);
737: *buf_ptr |= (((sljit_w)jump->u.target - (sljit_w)(buf_ptr + 2)) >> 2) & 0x00ffffff;
738: }
739: }
740: else if (jump->flags & SLJIT_REWRITABLE_JUMP) {
741: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
742: jump->addr = (sljit_uw)code_ptr;
743: code_ptr[0] = (sljit_uw)buf_ptr;
744: code_ptr[1] = *buf_ptr;
745: inline_set_jump_addr((sljit_uw)code_ptr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0);
746: code_ptr += 2;
747: #else
748: inline_set_jump_addr((sljit_uw)buf_ptr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0);
749: #endif
750: }
751: else {
752: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
753: if (jump->flags & IS_BL)
754: buf_ptr--;
755: if (*buf_ptr & (1 << 23))
756: buf_ptr += ((*buf_ptr & 0xfff) >> 2) + 2;
757: else
758: buf_ptr += 1;
759: *buf_ptr = (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target;
760: #else
761: inline_set_jump_addr((sljit_uw)buf_ptr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0);
762: #endif
763: }
764: jump = jump->next;
765: }
766:
767: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
768: const_ = compiler->consts;
769: while (const_) {
770: buf_ptr = (sljit_uw*)const_->addr;
771: const_->addr = (sljit_uw)code_ptr;
772:
773: code_ptr[0] = (sljit_uw)buf_ptr;
774: code_ptr[1] = *buf_ptr;
775: if (*buf_ptr & (1 << 23))
776: buf_ptr += ((*buf_ptr & 0xfff) >> 2) + 2;
777: else
778: buf_ptr += 1;
779: /* Set the value again (can be a simple constant). */
780: inline_set_const((sljit_uw)code_ptr, *buf_ptr, 0);
781: code_ptr += 2;
782:
783: const_ = const_->next;
784: }
785: #endif
786:
787: SLJIT_ASSERT(code_ptr - code <= (int)size);
788:
789: SLJIT_CACHE_FLUSH(code, code_ptr);
790: compiler->error = SLJIT_ERR_COMPILED;
791: compiler->executable_size = size * sizeof(sljit_uw);
792: return code;
793: }
794:
795: /* emit_op inp_flags.
796: WRITE_BACK must be the first, since it is a flag. */
797: #define WRITE_BACK 0x01
798: #define ALLOW_IMM 0x02
799: #define ALLOW_INV_IMM 0x04
800: #define ALLOW_ANY_IMM (ALLOW_IMM | ALLOW_INV_IMM)
801: #define ARG_TEST 0x08
802:
803: /* Creates an index in data_transfer_insts array. */
804: #define WORD_DATA 0x00
805: #define BYTE_DATA 0x10
806: #define HALF_DATA 0x20
807: #define SIGNED_DATA 0x40
808: #define LOAD_DATA 0x80
809:
810: #define EMIT_INSTRUCTION(inst) \
811: FAIL_IF(push_inst(compiler, (inst)))
812:
813: /* Condition: AL. */
814: #define EMIT_DATA_PROCESS_INS(opcode, set_flags, dst, src1, src2) \
815: (0xe0000000 | ((opcode) << 21) | (set_flags) | RD(dst) | RN(src1) | (src2))
816:
817: static int emit_op(struct sljit_compiler *compiler, int op, int inp_flags,
818: int dst, sljit_w dstw,
819: int src1, sljit_w src1w,
820: int src2, sljit_w src2w);
821:
822: SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_enter(struct sljit_compiler *compiler, int args, int temporaries, int generals, int local_size)
823: {
824: int size;
825: sljit_uw push;
826:
827: CHECK_ERROR();
828: check_sljit_emit_enter(compiler, args, temporaries, generals, local_size);
829:
830: compiler->temporaries = temporaries;
831: compiler->generals = generals;
832:
833: /* Push general registers, temporary registers
834: stmdb sp!, {..., lr} */
835: push = PUSH | (1 << 14);
836: if (temporaries >= 5)
837: push |= 1 << 11;
838: if (temporaries >= 4)
839: push |= 1 << 10;
840: if (generals >= 5)
841: push |= 1 << 8;
842: if (generals >= 4)
843: push |= 1 << 7;
844: if (generals >= 3)
845: push |= 1 << 6;
846: if (generals >= 2)
847: push |= 1 << 5;
848: if (generals >= 1)
849: push |= 1 << 4;
850: EMIT_INSTRUCTION(push);
851:
852: /* Stack must be aligned to 8 bytes: */
853: size = (1 + generals) * sizeof(sljit_uw);
854: if (temporaries >= 4)
855: size += (temporaries - 3) * sizeof(sljit_uw);
856: local_size += size;
857: local_size = (local_size + 7) & ~7;
858: local_size -= size;
859: compiler->local_size = local_size;
860: if (local_size > 0)
861: FAIL_IF(emit_op(compiler, SLJIT_SUB, ALLOW_IMM, SLJIT_LOCALS_REG, 0, SLJIT_LOCALS_REG, 0, SLJIT_IMM, local_size));
862:
863: if (args >= 1)
864: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_GENERAL_REG1, SLJIT_UNUSED, RM(SLJIT_TEMPORARY_REG1)));
865: if (args >= 2)
866: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_GENERAL_REG2, SLJIT_UNUSED, RM(SLJIT_TEMPORARY_REG2)));
867: if (args >= 3)
868: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_GENERAL_REG3, SLJIT_UNUSED, RM(SLJIT_TEMPORARY_REG3)));
869:
870: return SLJIT_SUCCESS;
871: }
872:
873: SLJIT_API_FUNC_ATTRIBUTE void sljit_fake_enter(struct sljit_compiler *compiler, int args, int temporaries, int generals, int local_size)
874: {
875: int size;
876:
877: CHECK_ERROR_VOID();
878: check_sljit_fake_enter(compiler, args, temporaries, generals, local_size);
879:
880: compiler->temporaries = temporaries;
881: compiler->generals = generals;
882:
883: size = (1 + generals) * sizeof(sljit_uw);
884: if (temporaries >= 4)
885: size += (temporaries - 3) * sizeof(sljit_uw);
886: local_size += size;
887: local_size = (local_size + 7) & ~7;
888: local_size -= size;
889: compiler->local_size = local_size;
890: }
891:
892: SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_return(struct sljit_compiler *compiler, int src, sljit_w srcw)
893: {
894: sljit_uw pop;
895:
896: CHECK_ERROR();
897: check_sljit_emit_return(compiler, src, srcw);
898:
899: if (src != SLJIT_UNUSED && src != SLJIT_RETURN_REG)
900: FAIL_IF(emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, SLJIT_RETURN_REG, 0, TMP_REG1, 0, src, srcw));
901:
902: if (compiler->local_size > 0)
903: FAIL_IF(emit_op(compiler, SLJIT_ADD, ALLOW_IMM, SLJIT_LOCALS_REG, 0, SLJIT_LOCALS_REG, 0, SLJIT_IMM, compiler->local_size));
904:
905: pop = POP | (1 << 15);
906: /* Push general registers, temporary registers
907: ldmia sp!, {..., pc} */
908: if (compiler->temporaries >= 5)
909: pop |= 1 << 11;
910: if (compiler->temporaries >= 4)
911: pop |= 1 << 10;
912: if (compiler->generals >= 5)
913: pop |= 1 << 8;
914: if (compiler->generals >= 4)
915: pop |= 1 << 7;
916: if (compiler->generals >= 3)
917: pop |= 1 << 6;
918: if (compiler->generals >= 2)
919: pop |= 1 << 5;
920: if (compiler->generals >= 1)
921: pop |= 1 << 4;
922:
923: return push_inst(compiler, pop);
924: }
925:
926: /* --------------------------------------------------------------------- */
927: /* Operators */
928: /* --------------------------------------------------------------------- */
929:
930: /* s/l - store/load (1 bit)
931: u/s - signed/unsigned (1 bit)
932: w/b/h/N - word/byte/half/NOT allowed (2 bit)
933: It contans 16 items, but not all are different. */
934:
935: static sljit_w data_transfer_insts[16] = {
936: /* s u w */ 0xe5000000 /* str */,
937: /* s u b */ 0xe5400000 /* strb */,
938: /* s u h */ 0xe10000b0 /* strh */,
939: /* s u N */ 0x00000000 /* not allowed */,
940: /* s s w */ 0xe5000000 /* str */,
941: /* s s b */ 0xe5400000 /* strb */,
942: /* s s h */ 0xe10000b0 /* strh */,
943: /* s s N */ 0x00000000 /* not allowed */,
944:
945: /* l u w */ 0xe5100000 /* ldr */,
946: /* l u b */ 0xe5500000 /* ldrb */,
947: /* l u h */ 0xe11000b0 /* ldrh */,
948: /* l u N */ 0x00000000 /* not allowed */,
949: /* l s w */ 0xe5100000 /* ldr */,
950: /* l s b */ 0xe11000d0 /* ldrsb */,
951: /* l s h */ 0xe11000f0 /* ldrsh */,
952: /* l s N */ 0x00000000 /* not allowed */,
953: };
954:
955: #define EMIT_DATA_TRANSFER(type, add, wb, target, base1, base2) \
956: (data_transfer_insts[(type) >> 4] | ((add) << 23) | ((wb) << 21) | (reg_map[target] << 12) | (reg_map[base1] << 16) | (base2))
957: /* Normal ldr/str instruction.
958: Type2: ldrsb, ldrh, ldrsh */
959: #define IS_TYPE1_TRANSFER(type) \
960: (data_transfer_insts[(type) >> 4] & 0x04000000)
961: #define TYPE2_TRANSFER_IMM(imm) \
962: (((imm) & 0xf) | (((imm) & 0xf0) << 4) | (1 << 22))
963:
964: /* flags: */
965: /* Arguments are swapped. */
966: #define ARGS_SWAPPED 0x01
967: /* Inverted immediate. */
968: #define INV_IMM 0x02
969: /* Source and destination is register. */
970: #define REG_DEST 0x04
971: #define REG_SOURCE 0x08
972: /* One instruction is enough. */
973: #define FAST_DEST 0x10
974: /* Multiple instructions are required. */
975: #define SLOW_DEST 0x20
976: /* SET_FLAGS must be (1 << 20) as it is also the value of S bit (can be used for optimization). */
977: #define SET_FLAGS (1 << 20)
978: /* dst: reg
979: src1: reg
980: src2: reg or imm (if allowed)
981: SRC2_IMM must be (1 << 25) as it is also the value of I bit (can be used for optimization). */
982: #define SRC2_IMM (1 << 25)
983:
984: #define EMIT_DATA_PROCESS_INS_AND_RETURN(opcode) \
985: return push_inst(compiler, EMIT_DATA_PROCESS_INS(opcode, flags & SET_FLAGS, dst, src1, (src2 & SRC2_IMM) ? src2 : RM(src2)))
986:
987: #define EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(opcode, dst, src1, src2) \
988: return push_inst(compiler, EMIT_DATA_PROCESS_INS(opcode, flags & SET_FLAGS, dst, src1, src2))
989:
990: #define EMIT_SHIFT_INS_AND_RETURN(opcode) \
991: SLJIT_ASSERT(!(flags & INV_IMM) && !(src2 & SRC2_IMM)); \
992: if (compiler->shift_imm != 0x20) { \
993: SLJIT_ASSERT(src1 == TMP_REG1); \
994: SLJIT_ASSERT(!(flags & ARGS_SWAPPED)); \
995: return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, flags & SET_FLAGS, dst, SLJIT_UNUSED, (compiler->shift_imm << 7) | (opcode << 5) | reg_map[src2])); \
996: } \
997: return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, flags & SET_FLAGS, dst, SLJIT_UNUSED, (reg_map[(flags & ARGS_SWAPPED) ? src1 : src2] << 8) | (opcode << 5) | 0x10 | ((flags & ARGS_SWAPPED) ? reg_map[src2] : reg_map[src1])));
998:
999: static SLJIT_INLINE int emit_single_op(struct sljit_compiler *compiler, int op, int flags,
1000: int dst, int src1, int src2)
1001: {
1002: sljit_w mul_inst;
1003:
1004: switch (GET_OPCODE(op)) {
1005: case SLJIT_ADD:
1006: SLJIT_ASSERT(!(flags & INV_IMM));
1007: EMIT_DATA_PROCESS_INS_AND_RETURN(ADD_DP);
1008:
1009: case SLJIT_ADDC:
1010: SLJIT_ASSERT(!(flags & INV_IMM));
1011: EMIT_DATA_PROCESS_INS_AND_RETURN(ADC_DP);
1012:
1013: case SLJIT_SUB:
1014: SLJIT_ASSERT(!(flags & INV_IMM));
1015: if (!(flags & ARGS_SWAPPED))
1016: EMIT_DATA_PROCESS_INS_AND_RETURN(SUB_DP);
1017: EMIT_DATA_PROCESS_INS_AND_RETURN(RSB_DP);
1018:
1019: case SLJIT_SUBC:
1020: SLJIT_ASSERT(!(flags & INV_IMM));
1021: if (!(flags & ARGS_SWAPPED))
1022: EMIT_DATA_PROCESS_INS_AND_RETURN(SBC_DP);
1023: EMIT_DATA_PROCESS_INS_AND_RETURN(RSC_DP);
1024:
1025: case SLJIT_MUL:
1026: SLJIT_ASSERT(!(flags & INV_IMM));
1027: SLJIT_ASSERT(!(src2 & SRC2_IMM));
1028: if (SLJIT_UNLIKELY(op & SLJIT_SET_O))
1029: mul_inst = SMULL | (reg_map[TMP_REG3] << 16) | (reg_map[dst] << 12);
1030: else
1031: mul_inst = MUL | (reg_map[dst] << 16);
1032:
1033: if (dst != src2)
1034: FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src1] << 8) | reg_map[src2]));
1035: else if (dst != src1)
1036: FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src2] << 8) | reg_map[src1]));
1037: else {
1038: /* Rm and Rd must not be the same register. */
1039: SLJIT_ASSERT(dst != TMP_REG1);
1040: FAIL_IF(push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, reg_map[src2])));
1041: FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src2] << 8) | reg_map[TMP_REG1]));
1042: }
1043:
1044: if (!(op & SLJIT_SET_O))
1045: return SLJIT_SUCCESS;
1046:
1047: /* We need to use TMP_REG3. */
1048: compiler->cache_arg = 0;
1049: compiler->cache_argw = 0;
1050: /* cmp TMP_REG2, dst asr #31. */
1051: return push_inst(compiler, EMIT_DATA_PROCESS_INS(CMP_DP, SET_FLAGS, SLJIT_UNUSED, TMP_REG3, RM(dst) | 0xfc0));
1052:
1053: case SLJIT_AND:
1054: if (!(flags & INV_IMM))
1055: EMIT_DATA_PROCESS_INS_AND_RETURN(AND_DP);
1056: EMIT_DATA_PROCESS_INS_AND_RETURN(BIC_DP);
1057:
1058: case SLJIT_OR:
1059: SLJIT_ASSERT(!(flags & INV_IMM));
1060: EMIT_DATA_PROCESS_INS_AND_RETURN(ORR_DP);
1061:
1062: case SLJIT_XOR:
1063: SLJIT_ASSERT(!(flags & INV_IMM));
1064: EMIT_DATA_PROCESS_INS_AND_RETURN(EOR_DP);
1065:
1066: case SLJIT_SHL:
1067: EMIT_SHIFT_INS_AND_RETURN(0);
1068:
1069: case SLJIT_LSHR:
1070: EMIT_SHIFT_INS_AND_RETURN(1);
1071:
1072: case SLJIT_ASHR:
1073: EMIT_SHIFT_INS_AND_RETURN(2);
1074:
1075: case SLJIT_MOV:
1076: SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
1077: if (dst != src2) {
1078: if (src2 & SRC2_IMM) {
1079: if (flags & INV_IMM)
1080: EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
1081: EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
1082: }
1083: EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, reg_map[src2]);
1084: }
1085: return SLJIT_SUCCESS;
1086:
1087: case SLJIT_MOV_UB:
1088: case SLJIT_MOV_SB:
1089: SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
1090: if ((flags & (REG_DEST | REG_SOURCE)) == (REG_DEST | REG_SOURCE)) {
1091: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1092: if (op == SLJIT_MOV_UB)
1093: return push_inst(compiler, EMIT_DATA_PROCESS_INS(AND_DP, 0, dst, src2, SRC2_IMM | 0xff));
1094: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (24 << 7) | reg_map[src2]));
1095: return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (24 << 7) | (op == SLJIT_MOV_UB ? 0x20 : 0x40) | reg_map[dst]));
1096: #else
1097: return push_inst(compiler, (op == SLJIT_MOV_UB ? UXTB : SXTB) | RD(dst) | RM(src2));
1098: #endif
1099: }
1100: else if (dst != src2) {
1101: SLJIT_ASSERT(src2 & SRC2_IMM);
1102: if (flags & INV_IMM)
1103: EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
1104: EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
1105: }
1106: return SLJIT_SUCCESS;
1107:
1108: case SLJIT_MOV_UH:
1109: case SLJIT_MOV_SH:
1110: SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
1111: if ((flags & (REG_DEST | REG_SOURCE)) == (REG_DEST | REG_SOURCE)) {
1112: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1113: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (16 << 7) | reg_map[src2]));
1114: return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (16 << 7) | (op == SLJIT_MOV_UH ? 0x20 : 0x40) | reg_map[dst]));
1115: #else
1116: return push_inst(compiler, (op == SLJIT_MOV_UH ? UXTH : SXTH) | RD(dst) | RM(src2));
1117: #endif
1118: }
1119: else if (dst != src2) {
1120: SLJIT_ASSERT(src2 & SRC2_IMM);
1121: if (flags & INV_IMM)
1122: EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
1123: EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
1124: }
1125: return SLJIT_SUCCESS;
1126:
1127: case SLJIT_NOT:
1128: if (src2 & SRC2_IMM) {
1129: if (flags & INV_IMM)
1130: EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
1131: EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
1132: }
1133: EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, RM(src2));
1134:
1135: case SLJIT_CLZ:
1136: SLJIT_ASSERT(!(flags & INV_IMM));
1137: SLJIT_ASSERT(!(src2 & SRC2_IMM));
1138: FAIL_IF(push_inst(compiler, CLZ | RD(dst) | RM(src2)));
1139: if (flags & SET_FLAGS)
1140: EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(CMP_DP, SLJIT_UNUSED, dst, SRC2_IMM);
1141: return SLJIT_SUCCESS;
1142: }
1143: SLJIT_ASSERT_STOP();
1144: return SLJIT_SUCCESS;
1145: }
1146:
1147: #undef EMIT_DATA_PROCESS_INS_AND_RETURN
1148: #undef EMIT_FULL_DATA_PROCESS_INS_AND_RETURN
1149: #undef EMIT_SHIFT_INS_AND_RETURN
1150:
1151: /* Tests whether the immediate can be stored in the 12 bit imm field.
1152: Returns with 0 if not possible. */
1153: static sljit_uw get_immediate(sljit_uw imm)
1154: {
1155: int rol;
1156:
1157: if (imm <= 0xff)
1158: return SRC2_IMM | imm;
1159:
1160: if (!(imm & 0xff000000)) {
1161: imm <<= 8;
1162: rol = 8;
1163: }
1164: else {
1165: imm = (imm << 24) | (imm >> 8);
1166: rol = 0;
1167: }
1168:
1169: if (!(imm & 0xff000000)) {
1170: imm <<= 8;
1171: rol += 4;
1172: }
1173:
1174: if (!(imm & 0xf0000000)) {
1175: imm <<= 4;
1176: rol += 2;
1177: }
1178:
1179: if (!(imm & 0xc0000000)) {
1180: imm <<= 2;
1181: rol += 1;
1182: }
1183:
1184: if (!(imm & 0x00ffffff))
1185: return SRC2_IMM | (imm >> 24) | (rol << 8);
1186: else
1187: return 0;
1188: }
1189:
1190: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1191: static int generate_int(struct sljit_compiler *compiler, int reg, sljit_uw imm, int positive)
1192: {
1193: sljit_uw mask;
1194: sljit_uw imm1;
1195: sljit_uw imm2;
1196: int rol;
1197:
1198: /* Step1: Search a zero byte (8 continous zero bit). */
1199: mask = 0xff000000;
1200: rol = 8;
1201: while(1) {
1202: if (!(imm & mask)) {
1203: /* Rol imm by rol. */
1204: imm = (imm << rol) | (imm >> (32 - rol));
1205: /* Calculate arm rol. */
1206: rol = 4 + (rol >> 1);
1207: break;
1208: }
1209: rol += 2;
1210: mask >>= 2;
1211: if (mask & 0x3) {
1212: /* rol by 8. */
1213: imm = (imm << 8) | (imm >> 24);
1214: mask = 0xff00;
1215: rol = 24;
1216: while (1) {
1217: if (!(imm & mask)) {
1218: /* Rol imm by rol. */
1219: imm = (imm << rol) | (imm >> (32 - rol));
1220: /* Calculate arm rol. */
1221: rol = (rol >> 1) - 8;
1222: break;
1223: }
1224: rol += 2;
1225: mask >>= 2;
1226: if (mask & 0x3)
1227: return 0;
1228: }
1229: break;
1230: }
1231: }
1232:
1233: /* The low 8 bit must be zero. */
1234: SLJIT_ASSERT(!(imm & 0xff));
1235:
1236: if (!(imm & 0xff000000)) {
1237: imm1 = SRC2_IMM | ((imm >> 16) & 0xff) | (((rol + 4) & 0xf) << 8);
1238: imm2 = SRC2_IMM | ((imm >> 8) & 0xff) | (((rol + 8) & 0xf) << 8);
1239: }
1240: else if (imm & 0xc0000000) {
1241: imm1 = SRC2_IMM | ((imm >> 24) & 0xff) | ((rol & 0xf) << 8);
1242: imm <<= 8;
1243: rol += 4;
1244:
1245: if (!(imm & 0xff000000)) {
1246: imm <<= 8;
1247: rol += 4;
1248: }
1249:
1250: if (!(imm & 0xf0000000)) {
1251: imm <<= 4;
1252: rol += 2;
1253: }
1254:
1255: if (!(imm & 0xc0000000)) {
1256: imm <<= 2;
1257: rol += 1;
1258: }
1259:
1260: if (!(imm & 0x00ffffff))
1261: imm2 = SRC2_IMM | (imm >> 24) | ((rol & 0xf) << 8);
1262: else
1263: return 0;
1264: }
1265: else {
1266: if (!(imm & 0xf0000000)) {
1267: imm <<= 4;
1268: rol += 2;
1269: }
1270:
1271: if (!(imm & 0xc0000000)) {
1272: imm <<= 2;
1273: rol += 1;
1274: }
1275:
1276: imm1 = SRC2_IMM | ((imm >> 24) & 0xff) | ((rol & 0xf) << 8);
1277: imm <<= 8;
1278: rol += 4;
1279:
1280: if (!(imm & 0xf0000000)) {
1281: imm <<= 4;
1282: rol += 2;
1283: }
1284:
1285: if (!(imm & 0xc0000000)) {
1286: imm <<= 2;
1287: rol += 1;
1288: }
1289:
1290: if (!(imm & 0x00ffffff))
1291: imm2 = SRC2_IMM | (imm >> 24) | ((rol & 0xf) << 8);
1292: else
1293: return 0;
1294: }
1295:
1296: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(positive ? MOV_DP : MVN_DP, 0, reg, SLJIT_UNUSED, imm1));
1297: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(positive ? ORR_DP : BIC_DP, 0, reg, reg, imm2));
1298: return 1;
1299: }
1300: #endif
1301:
1302: static int load_immediate(struct sljit_compiler *compiler, int reg, sljit_uw imm)
1303: {
1304: sljit_uw tmp;
1305:
1306: #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
1307: if (!(imm & ~0xffff))
1308: return push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | (imm & 0xfff));
1309: #endif
1310:
1311: /* Create imm by 1 inst. */
1312: tmp = get_immediate(imm);
1313: if (tmp) {
1314: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, tmp));
1315: return SLJIT_SUCCESS;
1316: }
1317:
1318: tmp = get_immediate(~imm);
1319: if (tmp) {
1320: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MVN_DP, 0, reg, SLJIT_UNUSED, tmp));
1321: return SLJIT_SUCCESS;
1322: }
1323:
1324: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1325: /* Create imm by 2 inst. */
1326: FAIL_IF(generate_int(compiler, reg, imm, 1));
1327: FAIL_IF(generate_int(compiler, reg, ~imm, 0));
1328:
1329: /* Load integer. */
1330: return push_inst_with_literal(compiler, EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0, reg, TMP_PC, 0), imm);
1331: #else
1332: return emit_imm(compiler, reg, imm);
1333: #endif
1334: }
1335:
1336: /* Can perform an operation using at most 1 instruction. */
1337: static int getput_arg_fast(struct sljit_compiler *compiler, int inp_flags, int reg, int arg, sljit_w argw)
1338: {
1339: sljit_uw imm;
1340:
1341: if (arg & SLJIT_IMM) {
1342: imm = get_immediate(argw);
1343: if (imm) {
1344: if (inp_flags & ARG_TEST)
1345: return 1;
1346: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, imm));
1347: return -1;
1348: }
1349: imm = get_immediate(~argw);
1350: if (imm) {
1351: if (inp_flags & ARG_TEST)
1352: return 1;
1353: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MVN_DP, 0, reg, SLJIT_UNUSED, imm));
1354: return -1;
1355: }
1356: return (inp_flags & ARG_TEST) ? SLJIT_SUCCESS : 0;
1357: }
1358:
1359: SLJIT_ASSERT(arg & SLJIT_MEM);
1360:
1361: /* Fast loads/stores. */
1362: if (arg & 0xf) {
1363: if (!(arg & 0xf0)) {
1364: if (IS_TYPE1_TRANSFER(inp_flags)) {
1365: if (argw >= 0 && argw <= 0xfff) {
1366: if (inp_flags & ARG_TEST)
1367: return 1;
1368: EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, argw));
1369: return -1;
1370: }
1371: if (argw < 0 && argw >= -0xfff) {
1372: if (inp_flags & ARG_TEST)
1373: return 1;
1374: EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 0, inp_flags & WRITE_BACK, reg, arg & 0xf, -argw));
1375: return -1;
1376: }
1377: }
1378: else {
1379: if (argw >= 0 && argw <= 0xff) {
1380: if (inp_flags & ARG_TEST)
1381: return 1;
1382: EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, TYPE2_TRANSFER_IMM(argw)));
1383: return -1;
1384: }
1385: if (argw < 0 && argw >= -0xff) {
1386: if (inp_flags & ARG_TEST)
1387: return 1;
1388: argw = -argw;
1389: EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 0, inp_flags & WRITE_BACK, reg, arg & 0xf, TYPE2_TRANSFER_IMM(argw)));
1390: return -1;
1391: }
1392: }
1393: }
1394: else if ((argw & 0x3) == 0 || IS_TYPE1_TRANSFER(inp_flags)) {
1395: if (inp_flags & ARG_TEST)
1396: return 1;
1397: EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf,
1398: RM((arg >> 4) & 0xf) | (IS_TYPE1_TRANSFER(inp_flags) ? SRC2_IMM : 0) | ((argw & 0x3) << 7)));
1399: return -1;
1400: }
1401: }
1402:
1403: return (inp_flags & ARG_TEST) ? SLJIT_SUCCESS : 0;
1404: }
1405:
1406: /* See getput_arg below.
1407: Note: can_cache is called only for binary operators. Those
1408: operators always uses word arguments without write back. */
1409: static int can_cache(int arg, sljit_w argw, int next_arg, sljit_w next_argw)
1410: {
1411: /* Immediate caching is not supported as it would be an operation on constant arguments. */
1412: if (arg & SLJIT_IMM)
1413: return 0;
1414:
1415: /* Always a simple operation. */
1416: if (arg & 0xf0)
1417: return 0;
1418:
1419: if (!(arg & 0xf)) {
1420: /* Immediate access. */
1421: if ((next_arg & SLJIT_MEM) && ((sljit_uw)argw - (sljit_uw)next_argw <= 0xfff || (sljit_uw)next_argw - (sljit_uw)argw <= 0xfff))
1422: return 1;
1423: return 0;
1424: }
1425:
1426: if (argw <= 0xfffff && argw >= -0xfffff)
1427: return 0;
1428:
1429: if (argw == next_argw && (next_arg & SLJIT_MEM))
1430: return 1;
1431:
1432: if (arg == next_arg && ((sljit_uw)argw - (sljit_uw)next_argw <= 0xfff || (sljit_uw)next_argw - (sljit_uw)argw <= 0xfff))
1433: return 1;
1434:
1435: return 0;
1436: }
1437:
1438: #define GETPUT_ARG_DATA_TRANSFER(add, wb, target, base, imm) \
1439: if (max_delta & 0xf00) \
1440: FAIL_IF(push_inst(compiler, EMIT_DATA_TRANSFER(inp_flags, add, wb, target, base, imm))); \
1441: else \
1442: FAIL_IF(push_inst(compiler, EMIT_DATA_TRANSFER(inp_flags, add, wb, target, base, TYPE2_TRANSFER_IMM(imm))));
1443:
1444: #define TEST_WRITE_BACK() \
1445: if (inp_flags & WRITE_BACK) { \
1446: tmp_r = arg & 0xf; \
1447: if (reg == tmp_r) { \
1448: /* This can only happen for stores */ \
1449: /* since ldr reg, [reg, ...]! has no meaning */ \
1450: SLJIT_ASSERT(!(inp_flags & LOAD_DATA)); \
1451: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(reg))); \
1452: reg = TMP_REG3; \
1453: } \
1454: }
1455:
1456: /* Emit the necessary instructions. See can_cache above. */
1457: static int getput_arg(struct sljit_compiler *compiler, int inp_flags, int reg, int arg, sljit_w argw, int next_arg, sljit_w next_argw)
1458: {
1459: int tmp_r;
1460: sljit_w max_delta;
1461: sljit_w sign;
1462:
1463: if (arg & SLJIT_IMM) {
1464: SLJIT_ASSERT(inp_flags & LOAD_DATA);
1465: return load_immediate(compiler, reg, argw);
1466: }
1467:
1468: SLJIT_ASSERT(arg & SLJIT_MEM);
1469:
1470: tmp_r = (inp_flags & LOAD_DATA) ? reg : TMP_REG3;
1471: max_delta = IS_TYPE1_TRANSFER(inp_flags) ? 0xfff : 0xff;
1472:
1473: if ((arg & 0xf) == SLJIT_UNUSED) {
1474: /* Write back is not used. */
1475: if ((compiler->cache_arg & SLJIT_IMM) && (((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= (sljit_uw)max_delta || ((sljit_uw)compiler->cache_argw - (sljit_uw)argw) <= (sljit_uw)max_delta)) {
1476: if (((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= (sljit_uw)max_delta) {
1477: sign = 1;
1478: argw = argw - compiler->cache_argw;
1479: }
1480: else {
1481: sign = 0;
1482: argw = compiler->cache_argw - argw;
1483: }
1484:
1485: if (max_delta & 0xf00) {
1486: EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, sign, 0, reg, TMP_REG3, argw));
1487: }
1488: else {
1489: EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, sign, 0, reg, TMP_REG3, TYPE2_TRANSFER_IMM(argw)));
1490: }
1491: return SLJIT_SUCCESS;
1492: }
1493:
1494: /* With write back, we can create some sophisticated loads, but
1495: it is hard to decide whether we should convert downward (0s) or upward (1s). */
1496: if ((next_arg & SLJIT_MEM) && ((sljit_uw)argw - (sljit_uw)next_argw <= (sljit_uw)max_delta || (sljit_uw)next_argw - (sljit_uw)argw <= (sljit_uw)max_delta)) {
1497: SLJIT_ASSERT(inp_flags & LOAD_DATA);
1498:
1499: compiler->cache_arg = SLJIT_IMM;
1500: compiler->cache_argw = argw;
1501: tmp_r = TMP_REG3;
1502: }
1503:
1504: FAIL_IF(load_immediate(compiler, tmp_r, argw));
1505: GETPUT_ARG_DATA_TRANSFER(1, 0, reg, tmp_r, 0);
1506: return SLJIT_SUCCESS;
1507: }
1508:
1509: /* Extended imm addressing for [reg+imm] format. */
1510: sign = (max_delta << 8) | 0xff;
1511: if (!(arg & 0xf0) && argw <= sign && argw >= -sign) {
1512: TEST_WRITE_BACK();
1513: if (argw >= 0) {
1514: sign = 1;
1515: }
1516: else {
1517: sign = 0;
1518: argw = -argw;
1519: }
1520:
1521: /* Optimization: add is 0x4, sub is 0x2. Sign is 1 for add and 0 for sub. */
1522: if (max_delta & 0xf00)
1523: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(SUB_DP << sign, 0, tmp_r, arg & 0xf, SRC2_IMM | (argw >> 12) | 0xa00));
1524: else
1525: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(SUB_DP << sign, 0, tmp_r, arg & 0xf, SRC2_IMM | (argw >> 8) | 0xc00));
1526:
1527: argw &= max_delta;
1528: GETPUT_ARG_DATA_TRANSFER(sign, inp_flags & WRITE_BACK, reg, tmp_r, argw);
1529: return SLJIT_SUCCESS;
1530: }
1531:
1532: if (arg & 0xf0) {
1533: SLJIT_ASSERT((argw & 0x3) && !(max_delta & 0xf00));
1534: if (inp_flags & WRITE_BACK)
1535: tmp_r = arg & 0xf;
1536: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, tmp_r, arg & 0xf, RM((arg >> 4) & 0xf) | ((argw & 0x3) << 7)));
1537: EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, 0, reg, tmp_r, TYPE2_TRANSFER_IMM(0)));
1538: return SLJIT_SUCCESS;
1539: }
1540:
1541: if (compiler->cache_arg == arg && ((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= (sljit_uw)max_delta) {
1542: SLJIT_ASSERT(!(inp_flags & WRITE_BACK));
1543: argw = argw - compiler->cache_argw;
1544: GETPUT_ARG_DATA_TRANSFER(1, 0, reg, TMP_REG3, argw);
1545: return SLJIT_SUCCESS;
1546: }
1547:
1548: if (compiler->cache_arg == arg && ((sljit_uw)compiler->cache_argw - (sljit_uw)argw) <= (sljit_uw)max_delta) {
1549: SLJIT_ASSERT(!(inp_flags & WRITE_BACK));
1550: argw = compiler->cache_argw - argw;
1551: GETPUT_ARG_DATA_TRANSFER(0, 0, reg, TMP_REG3, argw);
1552: return SLJIT_SUCCESS;
1553: }
1554:
1555: if ((compiler->cache_arg & SLJIT_IMM) && compiler->cache_argw == argw) {
1556: TEST_WRITE_BACK();
1557: EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, RM(TMP_REG3) | (max_delta & 0xf00 ? SRC2_IMM : 0)));
1558: return SLJIT_SUCCESS;
1559: }
1560:
1561: if (argw == next_argw && (next_arg & SLJIT_MEM)) {
1562: SLJIT_ASSERT(inp_flags & LOAD_DATA);
1563: FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1564:
1565: compiler->cache_arg = SLJIT_IMM;
1566: compiler->cache_argw = argw;
1567:
1568: TEST_WRITE_BACK();
1569: EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, RM(TMP_REG3) | (max_delta & 0xf00 ? SRC2_IMM : 0)));
1570: return SLJIT_SUCCESS;
1571: }
1572:
1573: if (arg == next_arg && !(inp_flags & WRITE_BACK) && ((sljit_uw)argw - (sljit_uw)next_argw <= (sljit_uw)max_delta || (sljit_uw)next_argw - (sljit_uw)argw <= (sljit_uw)max_delta)) {
1574: SLJIT_ASSERT(inp_flags & LOAD_DATA);
1575: FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1576: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG3, TMP_REG3, reg_map[arg & 0xf]));
1577:
1578: compiler->cache_arg = arg;
1579: compiler->cache_argw = argw;
1580:
1581: GETPUT_ARG_DATA_TRANSFER(1, 0, reg, TMP_REG3, 0);
1582: return SLJIT_SUCCESS;
1583: }
1584:
1585: if ((arg & 0xf) == tmp_r) {
1586: compiler->cache_arg = SLJIT_IMM;
1587: compiler->cache_argw = argw;
1588: tmp_r = TMP_REG3;
1589: }
1590:
1591: FAIL_IF(load_immediate(compiler, tmp_r, argw));
1592: EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, reg_map[tmp_r] | (max_delta & 0xf00 ? SRC2_IMM : 0)));
1593: return SLJIT_SUCCESS;
1594: }
1595:
1596: static int emit_op(struct sljit_compiler *compiler, int op, int inp_flags,
1597: int dst, sljit_w dstw,
1598: int src1, sljit_w src1w,
1599: int src2, sljit_w src2w)
1600: {
1601: /* arg1 goes to TMP_REG1 or src reg
1602: arg2 goes to TMP_REG2, imm or src reg
1603: TMP_REG3 can be used for caching
1604: result goes to TMP_REG2, so put result can use TMP_REG1 and TMP_REG3. */
1605:
1606: /* We prefers register and simple consts. */
1607: int dst_r;
1608: int src1_r;
1609: int src2_r = 0;
1610: int sugg_src2_r = TMP_REG2;
1611: int flags = GET_FLAGS(op) ? SET_FLAGS : 0;
1612:
1613: compiler->cache_arg = 0;
1614: compiler->cache_argw = 0;
1615:
1616: /* Destination check. */
1617: if (dst >= SLJIT_TEMPORARY_REG1 && dst <= TMP_REG3) {
1618: dst_r = dst;
1619: flags |= REG_DEST;
1620: if (op >= SLJIT_MOV && op <= SLJIT_MOVU_SI)
1621: sugg_src2_r = dst_r;
1622: }
1623: else if (dst == SLJIT_UNUSED) {
1624: if (op >= SLJIT_MOV && op <= SLJIT_MOVU_SI && !(src2 & SLJIT_MEM))
1625: return SLJIT_SUCCESS;
1626: dst_r = TMP_REG2;
1627: }
1628: else {
1629: SLJIT_ASSERT(dst & SLJIT_MEM);
1630: if (getput_arg_fast(compiler, inp_flags | ARG_TEST, TMP_REG2, dst, dstw)) {
1631: flags |= FAST_DEST;
1632: dst_r = TMP_REG2;
1633: }
1634: else {
1635: flags |= SLOW_DEST;
1636: dst_r = 0;
1637: }
1638: }
1639:
1640: /* Source 1. */
1641: if (src1 >= SLJIT_TEMPORARY_REG1 && src1 <= TMP_REG3)
1642: src1_r = src1;
1643: else if (src2 >= SLJIT_TEMPORARY_REG1 && src2 <= TMP_REG3) {
1644: flags |= ARGS_SWAPPED;
1645: src1_r = src2;
1646: src2 = src1;
1647: src2w = src1w;
1648: }
1649: else {
1650: if ((inp_flags & ALLOW_ANY_IMM) && (src1 & SLJIT_IMM)) {
1651: /* The second check will generate a hit. */
1652: src2_r = get_immediate(src1w);
1653: if (src2_r) {
1654: flags |= ARGS_SWAPPED;
1655: src1 = src2;
1656: src1w = src2w;
1657: }
1658: if (inp_flags & ALLOW_INV_IMM) {
1659: src2_r = get_immediate(~src1w);
1660: if (src2_r) {
1661: flags |= ARGS_SWAPPED | INV_IMM;
1662: src1 = src2;
1663: src1w = src2w;
1664: }
1665: }
1666: }
1667:
1668: src1_r = 0;
1669: if (getput_arg_fast(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w)) {
1670: FAIL_IF(compiler->error);
1671: src1_r = TMP_REG1;
1672: }
1673: }
1674:
1675: /* Source 2. */
1676: if (src2_r == 0) {
1677: if (src2 >= SLJIT_TEMPORARY_REG1 && src2 <= TMP_REG3) {
1678: src2_r = src2;
1679: flags |= REG_SOURCE;
1680: if (!(flags & REG_DEST) && op >= SLJIT_MOV && op <= SLJIT_MOVU_SI)
1681: dst_r = src2_r;
1682: }
1683: else do { /* do { } while(0) is used because of breaks. */
1684: if ((inp_flags & ALLOW_ANY_IMM) && (src2 & SLJIT_IMM)) {
1685: src2_r = get_immediate(src2w);
1686: if (src2_r)
1687: break;
1688: if (inp_flags & ALLOW_INV_IMM) {
1689: src2_r = get_immediate(~src2w);
1690: if (src2_r) {
1691: flags |= INV_IMM;
1692: break;
1693: }
1694: }
1695: }
1696:
1697: /* src2_r is 0. */
1698: if (getput_arg_fast(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w)) {
1699: FAIL_IF(compiler->error);
1700: src2_r = sugg_src2_r;
1701: }
1702: } while (0);
1703: }
1704:
1705: /* src1_r, src2_r and dst_r can be zero (=unprocessed) or non-zero.
1706: If they are zero, they must not be registers. */
1707: if (src1_r == 0 && src2_r == 0 && dst_r == 0) {
1708: if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
1709: SLJIT_ASSERT(!(flags & ARGS_SWAPPED));
1710: flags |= ARGS_SWAPPED;
1711: FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src2, src2w, src1, src1w));
1712: FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG2, src1, src1w, dst, dstw));
1713: }
1714: else {
1715: FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, src2, src2w));
1716: FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG2, src2, src2w, dst, dstw));
1717: }
1718: src1_r = TMP_REG1;
1719: src2_r = TMP_REG2;
1720: }
1721: else if (src1_r == 0 && src2_r == 0) {
1722: FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, src2, src2w));
1723: src1_r = TMP_REG1;
1724: }
1725: else if (src1_r == 0 && dst_r == 0) {
1726: FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, dst, dstw));
1727: src1_r = TMP_REG1;
1728: }
1729: else if (src2_r == 0 && dst_r == 0) {
1730: FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w, dst, dstw));
1731: src2_r = sugg_src2_r;
1732: }
1733:
1734: if (dst_r == 0)
1735: dst_r = TMP_REG2;
1736:
1737: if (src1_r == 0) {
1738: FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, 0, 0));
1739: src1_r = TMP_REG1;
1740: }
1741:
1742: if (src2_r == 0) {
1743: FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w, 0, 0));
1744: src2_r = sugg_src2_r;
1745: }
1746:
1747: FAIL_IF(emit_single_op(compiler, op, flags, dst_r, src1_r, src2_r));
1748:
1749: if (flags & (FAST_DEST | SLOW_DEST)) {
1750: if (flags & FAST_DEST)
1751: FAIL_IF(getput_arg_fast(compiler, inp_flags, dst_r, dst, dstw));
1752: else
1753: FAIL_IF(getput_arg(compiler, inp_flags, dst_r, dst, dstw, 0, 0));
1754: }
1755: return SLJIT_SUCCESS;
1756: }
1757:
1758: SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op0(struct sljit_compiler *compiler, int op)
1759: {
1760: CHECK_ERROR();
1761: check_sljit_emit_op0(compiler, op);
1762:
1763: op = GET_OPCODE(op);
1764: switch (op) {
1765: case SLJIT_BREAKPOINT:
1766: EMIT_INSTRUCTION(DEBUGGER);
1767: break;
1768: case SLJIT_NOP:
1769: EMIT_INSTRUCTION(NOP);
1770: break;
1771: }
1772:
1773: return SLJIT_SUCCESS;
1774: }
1775:
1776: SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op1(struct sljit_compiler *compiler, int op,
1777: int dst, sljit_w dstw,
1778: int src, sljit_w srcw)
1779: {
1780: CHECK_ERROR();
1781: check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw);
1782:
1783: switch (GET_OPCODE(op)) {
1784: case SLJIT_MOV:
1785: case SLJIT_MOV_UI:
1786: case SLJIT_MOV_SI:
1787: return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, src, srcw);
1788:
1789: case SLJIT_MOV_UB:
1790: return emit_op(compiler, SLJIT_MOV_UB, ALLOW_ANY_IMM | BYTE_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned char)srcw : srcw);
1791:
1792: case SLJIT_MOV_SB:
1793: return emit_op(compiler, SLJIT_MOV_SB, ALLOW_ANY_IMM | SIGNED_DATA | BYTE_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed char)srcw : srcw);
1794:
1795: case SLJIT_MOV_UH:
1796: return emit_op(compiler, SLJIT_MOV_UH, ALLOW_ANY_IMM | HALF_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned short)srcw : srcw);
1797:
1798: case SLJIT_MOV_SH:
1799: return emit_op(compiler, SLJIT_MOV_SH, ALLOW_ANY_IMM | SIGNED_DATA | HALF_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed short)srcw : srcw);
1800:
1801: case SLJIT_MOVU:
1802: case SLJIT_MOVU_UI:
1803: case SLJIT_MOVU_SI:
1804: return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1805:
1806: case SLJIT_MOVU_UB:
1807: return emit_op(compiler, SLJIT_MOV_UB, ALLOW_ANY_IMM | BYTE_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned char)srcw : srcw);
1808:
1809: case SLJIT_MOVU_SB:
1810: return emit_op(compiler, SLJIT_MOV_SB, ALLOW_ANY_IMM | SIGNED_DATA | BYTE_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed char)srcw : srcw);
1811:
1812: case SLJIT_MOVU_UH:
1813: return emit_op(compiler, SLJIT_MOV_UH, ALLOW_ANY_IMM | HALF_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned short)srcw : srcw);
1814:
1815: case SLJIT_MOVU_SH:
1816: return emit_op(compiler, SLJIT_MOV_SH, ALLOW_ANY_IMM | SIGNED_DATA | HALF_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed short)srcw : srcw);
1817:
1818: case SLJIT_NOT:
1819: return emit_op(compiler, op, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, src, srcw);
1820:
1821: case SLJIT_NEG:
1822: #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) || (defined SLJIT_DEBUG && SLJIT_DEBUG)
1823: compiler->skip_checks = 1;
1824: #endif
1825: return sljit_emit_op2(compiler, SLJIT_SUB | GET_FLAGS(op), dst, dstw, SLJIT_IMM, 0, src, srcw);
1826:
1827: case SLJIT_CLZ:
1828: return emit_op(compiler, op, 0, dst, dstw, TMP_REG1, 0, src, srcw);
1829: }
1830:
1831: return SLJIT_SUCCESS;
1832: }
1833:
1834: SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op2(struct sljit_compiler *compiler, int op,
1835: int dst, sljit_w dstw,
1836: int src1, sljit_w src1w,
1837: int src2, sljit_w src2w)
1838: {
1839: CHECK_ERROR();
1840: check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w);
1841:
1842: switch (GET_OPCODE(op)) {
1843: case SLJIT_ADD:
1844: case SLJIT_ADDC:
1845: case SLJIT_SUB:
1846: case SLJIT_SUBC:
1847: case SLJIT_OR:
1848: case SLJIT_XOR:
1849: return emit_op(compiler, op, ALLOW_IMM, dst, dstw, src1, src1w, src2, src2w);
1850:
1851: case SLJIT_MUL:
1852: return emit_op(compiler, op, 0, dst, dstw, src1, src1w, src2, src2w);
1853:
1854: case SLJIT_AND:
1855: return emit_op(compiler, op, ALLOW_ANY_IMM, dst, dstw, src1, src1w, src2, src2w);
1856:
1857: case SLJIT_SHL:
1858: case SLJIT_LSHR:
1859: case SLJIT_ASHR:
1860: if (src2 & SLJIT_IMM) {
1861: compiler->shift_imm = src2w & 0x1f;
1862: return emit_op(compiler, op, 0, dst, dstw, TMP_REG1, 0, src1, src1w);
1863: }
1864: else {
1865: compiler->shift_imm = 0x20;
1866: return emit_op(compiler, op, 0, dst, dstw, src1, src1w, src2, src2w);
1867: }
1868: }
1869:
1870: return SLJIT_SUCCESS;
1871: }
1872:
1873: /* --------------------------------------------------------------------- */
1874: /* Floating point operators */
1875: /* --------------------------------------------------------------------- */
1876:
1877: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1878:
1879: /* 0 - no fpu
1880: 1 - vfp */
1881: static int arm_fpu_type = -1;
1882:
1883: static void init_compiler()
1884: {
1885: if (arm_fpu_type != -1)
1886: return;
1887:
1888: /* TODO: Only the OS can help to determine the correct fpu type. */
1889: arm_fpu_type = 1;
1890: }
1891:
1892: SLJIT_API_FUNC_ATTRIBUTE int sljit_is_fpu_available(void)
1893: {
1894: if (arm_fpu_type == -1)
1895: init_compiler();
1896: return arm_fpu_type;
1897: }
1898:
1899: #else
1900:
1901: #define arm_fpu_type 1
1902:
1903: SLJIT_API_FUNC_ATTRIBUTE int sljit_is_fpu_available(void)
1904: {
1905: /* Always available. */
1906: return 1;
1907: }
1908:
1909: #endif
1910:
1911: #define EMIT_FPU_DATA_TRANSFER(add, load, base, freg, offs) \
1912: (VSTR | ((add) << 23) | ((load) << 20) | (reg_map[base] << 16) | (freg << 12) | (offs))
1913: #define EMIT_FPU_OPERATION(opcode, dst, src1, src2) \
1914: ((opcode) | ((dst) << 12) | (src1) | ((src2) << 16))
1915:
1916: static int emit_fpu_data_transfer(struct sljit_compiler *compiler, int fpu_reg, int load, int arg, sljit_w argw)
1917: {
1918: SLJIT_ASSERT(arg & SLJIT_MEM);
1919:
1920: /* Fast loads and stores. */
1921: if ((arg & 0xf) && !(arg & 0xf0) && (argw & 0x3) == 0) {
1922: if (argw >= 0 && argw <= 0x3ff) {
1923: EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, arg & 0xf, fpu_reg, argw >> 2));
1924: return SLJIT_SUCCESS;
1925: }
1926: if (argw < 0 && argw >= -0x3ff) {
1927: EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(0, load, arg & 0xf, fpu_reg, (-argw) >> 2));
1928: return SLJIT_SUCCESS;
1929: }
1930: if (argw >= 0 && argw <= 0x3ffff) {
1931: SLJIT_ASSERT(get_immediate(argw & 0x3fc00));
1932: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG1, arg & 0xf, get_immediate(argw & 0x3fc00)));
1933: argw &= 0x3ff;
1934: EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG1, fpu_reg, argw >> 2));
1935: return SLJIT_SUCCESS;
1936: }
1937: if (argw < 0 && argw >= -0x3ffff) {
1938: argw = -argw;
1939: SLJIT_ASSERT(get_immediate(argw & 0x3fc00));
1940: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(SUB_DP, 0, TMP_REG1, arg & 0xf, get_immediate(argw & 0x3fc00)));
1941: argw &= 0x3ff;
1942: EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(0, load, TMP_REG1, fpu_reg, argw >> 2));
1943: return SLJIT_SUCCESS;
1944: }
1945: }
1946:
1947: if (arg & 0xf0) {
1948: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG1, arg & 0xf, RM((arg >> 4) & 0xf) | ((argw & 0x3) << 7)));
1949: EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG1, fpu_reg, 0));
1950: return SLJIT_SUCCESS;
1951: }
1952:
1953: if (compiler->cache_arg == arg && ((argw - compiler->cache_argw) & 0x3) == 0) {
1954: if (((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= 0x3ff) {
1955: EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG3, fpu_reg, (argw - compiler->cache_argw) >> 2));
1956: return SLJIT_SUCCESS;
1957: }
1958: if (((sljit_uw)compiler->cache_argw - (sljit_uw)argw) <= 0x3ff) {
1959: EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(0, load, TMP_REG3, fpu_reg, (compiler->cache_argw - argw) >> 2));
1960: return SLJIT_SUCCESS;
1961: }
1962: }
1963:
1964: compiler->cache_arg = arg;
1965: compiler->cache_argw = argw;
1966: if (arg & 0xf) {
1967: FAIL_IF(load_immediate(compiler, TMP_REG1, argw));
1968: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG3, arg & 0xf, reg_map[TMP_REG1]));
1969: }
1970: else
1971: FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1972:
1973: EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG3, fpu_reg, 0));
1974: return SLJIT_SUCCESS;
1975: }
1976:
1977: SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fop1(struct sljit_compiler *compiler, int op,
1978: int dst, sljit_w dstw,
1979: int src, sljit_w srcw)
1980: {
1981: int dst_freg;
1982:
1983: CHECK_ERROR();
1984: check_sljit_emit_fop1(compiler, op, dst, dstw, src, srcw);
1985:
1986: compiler->cache_arg = 0;
1987: compiler->cache_argw = 0;
1988:
1989: if (GET_OPCODE(op) == SLJIT_FCMP) {
1990: if (dst > SLJIT_FLOAT_REG4) {
1991: FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG1, 1, dst, dstw));
1992: dst = TMP_FREG1;
1993: }
1994: if (src > SLJIT_FLOAT_REG4) {
1995: FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG2, 1, src, srcw));
1996: src = TMP_FREG2;
1997: }
1998: EMIT_INSTRUCTION(VCMP_F64 | (dst << 12) | src);
1999: EMIT_INSTRUCTION(VMRS);
2000: return SLJIT_SUCCESS;
2001: }
2002:
2003: dst_freg = (dst > SLJIT_FLOAT_REG4) ? TMP_FREG1 : dst;
2004:
2005: if (src > SLJIT_FLOAT_REG4) {
2006: FAIL_IF(emit_fpu_data_transfer(compiler, dst_freg, 1, src, srcw));
2007: src = dst_freg;
2008: }
2009:
2010: switch (op) {
2011: case SLJIT_FMOV:
2012: if (src != dst_freg && dst_freg != TMP_FREG1)
2013: EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VMOV_F64, dst_freg, src, 0));
2014: break;
2015: case SLJIT_FNEG:
2016: EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VNEG_F64, dst_freg, src, 0));
2017: break;
2018: case SLJIT_FABS:
2019: EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VABS_F64, dst_freg, src, 0));
2020: break;
2021: }
2022:
2023: if (dst_freg == TMP_FREG1)
2024: FAIL_IF(emit_fpu_data_transfer(compiler, src, 0, dst, dstw));
2025:
2026: return SLJIT_SUCCESS;
2027: }
2028:
2029: SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fop2(struct sljit_compiler *compiler, int op,
2030: int dst, sljit_w dstw,
2031: int src1, sljit_w src1w,
2032: int src2, sljit_w src2w)
2033: {
2034: int dst_freg;
2035:
2036: CHECK_ERROR();
2037: check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w);
2038:
2039: compiler->cache_arg = 0;
2040: compiler->cache_argw = 0;
2041:
2042: dst_freg = (dst > SLJIT_FLOAT_REG4) ? TMP_FREG1 : dst;
2043:
2044: if (src2 > SLJIT_FLOAT_REG4) {
2045: FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG2, 1, src2, src2w));
2046: src2 = TMP_FREG2;
2047: }
2048:
2049: if (src1 > SLJIT_FLOAT_REG4) {
2050: FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG1, 1, src1, src1w));
2051: src1 = TMP_FREG1;
2052: }
2053:
2054: switch (op) {
2055: case SLJIT_FADD:
2056: EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VADD_F64, dst_freg, src2, src1));
2057: break;
2058:
2059: case SLJIT_FSUB:
2060: EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VSUB_F64, dst_freg, src2, src1));
2061: break;
2062:
2063: case SLJIT_FMUL:
2064: EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VMUL_F64, dst_freg, src2, src1));
2065: break;
2066:
2067: case SLJIT_FDIV:
2068: EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VDIV_F64, dst_freg, src2, src1));
2069: break;
2070: }
2071:
2072: if (dst_freg == TMP_FREG1)
2073: FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG1, 0, dst, dstw));
2074:
2075: return SLJIT_SUCCESS;
2076: }
2077:
2078: /* --------------------------------------------------------------------- */
2079: /* Other instructions */
2080: /* --------------------------------------------------------------------- */
2081:
2082: 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)
2083: {
2084: int size;
2085:
2086: CHECK_ERROR();
2087: check_sljit_emit_fast_enter(compiler, dst, dstw, args, temporaries, generals, local_size);
2088:
2089: compiler->temporaries = temporaries;
2090: compiler->generals = generals;
2091:
2092: size = (1 + generals) * sizeof(sljit_uw);
2093: if (temporaries >= 4)
2094: size += (temporaries - 3) * sizeof(sljit_uw);
2095: local_size += size;
2096: local_size = (local_size + 7) & ~7;
2097: local_size -= size;
2098: compiler->local_size = local_size;
2099:
2100: if (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS)
2101: return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, RM(TMP_REG3)));
2102: else if (dst & SLJIT_MEM) {
2103: if (getput_arg_fast(compiler, WORD_DATA, TMP_REG3, dst, dstw))
2104: return compiler->error;
2105: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG2, SLJIT_UNUSED, RM(TMP_REG3)));
2106: compiler->cache_arg = 0;
2107: compiler->cache_argw = 0;
2108: return getput_arg(compiler, WORD_DATA, TMP_REG2, dst, dstw, 0, 0);
2109: }
2110:
2111: return SLJIT_SUCCESS;
2112: }
2113:
2114: SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fast_return(struct sljit_compiler *compiler, int src, sljit_w srcw)
2115: {
2116: CHECK_ERROR();
2117: check_sljit_emit_fast_return(compiler, src, srcw);
2118:
2119: if (src >= SLJIT_TEMPORARY_REG1 && src <= SLJIT_NO_REGISTERS)
2120: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(src)));
2121: else if (src & SLJIT_MEM) {
2122: if (getput_arg_fast(compiler, WORD_DATA | LOAD_DATA, TMP_REG3, src, srcw))
2123: FAIL_IF(compiler->error);
2124: else {
2125: compiler->cache_arg = 0;
2126: compiler->cache_argw = 0;
2127: FAIL_IF(getput_arg(compiler, WORD_DATA | LOAD_DATA, TMP_REG2, src, srcw, 0, 0));
2128: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(TMP_REG2)));
2129: }
2130: }
2131: else if (src & SLJIT_IMM)
2132: FAIL_IF(load_immediate(compiler, TMP_REG3, srcw));
2133: return push_inst(compiler, BLX | RM(TMP_REG3));
2134: }
2135:
2136: /* --------------------------------------------------------------------- */
2137: /* Conditional instructions */
2138: /* --------------------------------------------------------------------- */
2139:
2140: static sljit_uw get_cc(int type)
2141: {
2142: switch (type) {
2143: case SLJIT_C_EQUAL:
2144: case SLJIT_C_MUL_NOT_OVERFLOW:
2145: case SLJIT_C_FLOAT_EQUAL:
2146: return 0x00000000;
2147:
2148: case SLJIT_C_NOT_EQUAL:
2149: case SLJIT_C_MUL_OVERFLOW:
2150: case SLJIT_C_FLOAT_NOT_EQUAL:
2151: return 0x10000000;
2152:
2153: case SLJIT_C_LESS:
2154: case SLJIT_C_FLOAT_LESS:
2155: return 0x30000000;
2156:
2157: case SLJIT_C_GREATER_EQUAL:
2158: case SLJIT_C_FLOAT_GREATER_EQUAL:
2159: return 0x20000000;
2160:
2161: case SLJIT_C_GREATER:
2162: case SLJIT_C_FLOAT_GREATER:
2163: return 0x80000000;
2164:
2165: case SLJIT_C_LESS_EQUAL:
2166: case SLJIT_C_FLOAT_LESS_EQUAL:
2167: return 0x90000000;
2168:
2169: case SLJIT_C_SIG_LESS:
2170: return 0xb0000000;
2171:
2172: case SLJIT_C_SIG_GREATER_EQUAL:
2173: return 0xa0000000;
2174:
2175: case SLJIT_C_SIG_GREATER:
2176: return 0xc0000000;
2177:
2178: case SLJIT_C_SIG_LESS_EQUAL:
2179: return 0xd0000000;
2180:
2181: case SLJIT_C_OVERFLOW:
2182: case SLJIT_C_FLOAT_NAN:
2183: return 0x60000000;
2184:
2185: case SLJIT_C_NOT_OVERFLOW:
2186: case SLJIT_C_FLOAT_NOT_NAN:
2187: return 0x70000000;
2188:
2189: default: /* SLJIT_JUMP */
2190: return 0xe0000000;
2191: }
2192: }
2193:
2194: SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler)
2195: {
2196: struct sljit_label *label;
2197:
2198: CHECK_ERROR_PTR();
2199: check_sljit_emit_label(compiler);
2200:
2201: if (compiler->last_label && compiler->last_label->size == compiler->size)
2202: return compiler->last_label;
2203:
2204: label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label));
2205: PTR_FAIL_IF(!label);
2206: set_label(label, compiler);
2207: return label;
2208: }
2209:
2210: SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, int type)
2211: {
2212: struct sljit_jump *jump;
2213:
2214: CHECK_ERROR_PTR();
2215: check_sljit_emit_jump(compiler, type);
2216:
2217: jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
2218: PTR_FAIL_IF(!jump);
2219: set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
2220: type &= 0xff;
2221:
2222: /* In ARM, we don't need to touch the arguments. */
2223: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2224: if (type >= SLJIT_FAST_CALL)
2225: PTR_FAIL_IF(prepare_blx(compiler));
2226: PTR_FAIL_IF(push_inst_with_unique_literal(compiler, ((EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0,
2227: type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, TMP_PC, 0)) & ~COND_MASK) | get_cc(type), 0));
2228:
2229: if (jump->flags & SLJIT_REWRITABLE_JUMP) {
2230: jump->addr = compiler->size;
2231: compiler->patches++;
2232: }
2233:
2234: if (type >= SLJIT_FAST_CALL) {
2235: jump->flags |= IS_BL;
2236: PTR_FAIL_IF(emit_blx(compiler));
2237: }
2238:
2239: if (!(jump->flags & SLJIT_REWRITABLE_JUMP))
2240: jump->addr = compiler->size;
2241: #else
2242: if (type >= SLJIT_FAST_CALL)
2243: jump->flags |= IS_BL;
2244: PTR_FAIL_IF(emit_imm(compiler, TMP_REG1, 0));
2245: PTR_FAIL_IF(push_inst(compiler, (((type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1)) & ~COND_MASK) | get_cc(type)));
2246: jump->addr = compiler->size;
2247: #endif
2248: return jump;
2249: }
2250:
2251: SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_ijump(struct sljit_compiler *compiler, int type, int src, sljit_w srcw)
2252: {
2253: struct sljit_jump *jump;
2254:
2255: CHECK_ERROR();
2256: check_sljit_emit_ijump(compiler, type, src, srcw);
2257:
2258: /* In ARM, we don't need to touch the arguments. */
2259: if (src & SLJIT_IMM) {
2260: jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
2261: FAIL_IF(!jump);
2262: set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_BL : 0));
2263: jump->u.target = srcw;
2264:
2265: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2266: if (type >= SLJIT_FAST_CALL)
2267: FAIL_IF(prepare_blx(compiler));
2268: FAIL_IF(push_inst_with_unique_literal(compiler, EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0, type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, TMP_PC, 0), 0));
2269: if (type >= SLJIT_FAST_CALL)
2270: FAIL_IF(emit_blx(compiler));
2271: #else
2272: FAIL_IF(emit_imm(compiler, TMP_REG1, 0));
2273: FAIL_IF(push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1)));
2274: #endif
2275: jump->addr = compiler->size;
2276: }
2277: else {
2278: if (src >= SLJIT_TEMPORARY_REG1 && src <= SLJIT_NO_REGISTERS)
2279: return push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(src));
2280:
2281: SLJIT_ASSERT(src & SLJIT_MEM);
2282: FAIL_IF(emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, TMP_REG2, 0, TMP_REG1, 0, src, srcw));
2283: return push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG2));
2284: }
2285:
2286: return SLJIT_SUCCESS;
2287: }
2288:
2289: SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_cond_value(struct sljit_compiler *compiler, int op, int dst, sljit_w dstw, int type)
2290: {
2291: int reg;
2292: sljit_uw cc;
2293:
2294: CHECK_ERROR();
2295: check_sljit_emit_cond_value(compiler, op, dst, dstw, type);
2296:
2297: if (dst == SLJIT_UNUSED)
2298: return SLJIT_SUCCESS;
2299:
2300: cc = get_cc(type);
2301: if (GET_OPCODE(op) == SLJIT_OR) {
2302: if (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) {
2303: EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(ORR_DP, 0, dst, dst, SRC2_IMM | 1) & ~COND_MASK) | cc);
2304: if (op & SLJIT_SET_E)
2305: return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, SET_FLAGS, TMP_REG1, SLJIT_UNUSED, RM(dst)));
2306: return SLJIT_SUCCESS;
2307: }
2308:
2309: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, SRC2_IMM | 0));
2310: EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, SRC2_IMM | 1) & ~COND_MASK) | cc);
2311: #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) || (defined SLJIT_DEBUG && SLJIT_DEBUG)
2312: compiler->skip_checks = 1;
2313: #endif
2314: return emit_op(compiler, op, ALLOW_IMM, dst, dstw, TMP_REG1, 0, dst, dstw);
2315: }
2316:
2317: reg = (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) ? dst : TMP_REG2;
2318:
2319: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, SRC2_IMM | 0));
2320: EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, SRC2_IMM | 1) & ~COND_MASK) | cc);
2321:
2322: if (reg == TMP_REG2)
2323: return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, TMP_REG2, 0);
2324: return SLJIT_SUCCESS;
2325: }
2326:
2327: SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, int dst, sljit_w dstw, sljit_w init_value)
2328: {
2329: struct sljit_const *const_;
2330: int reg;
2331:
2332: CHECK_ERROR_PTR();
2333: check_sljit_emit_const(compiler, dst, dstw, init_value);
2334:
2335: const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const));
2336: PTR_FAIL_IF(!const_);
2337:
2338: reg = (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) ? dst : TMP_REG2;
2339:
2340: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2341: PTR_FAIL_IF(push_inst_with_unique_literal(compiler, EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0, reg, TMP_PC, 0), init_value));
2342: compiler->patches++;
2343: #else
2344: PTR_FAIL_IF(emit_imm(compiler, reg, init_value));
2345: #endif
2346: set_const(const_, compiler);
2347:
2348: if (reg == TMP_REG2 && dst != SLJIT_UNUSED)
2349: if (emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, TMP_REG2, 0))
2350: return NULL;
2351: return const_;
2352: }
2353:
2354: SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr)
2355: {
2356: inline_set_jump_addr(addr, new_addr, 1);
2357: }
2358:
2359: SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_w new_constant)
2360: {
2361: inline_set_const(addr, new_constant, 1);
2362: }
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