Annotation of embedaddon/pcre/sljit/sljitNativeARM_v5.c, revision 1.1.1.4
1.1 misho 1: /*
2: * Stack-less Just-In-Time compiler
3: *
1.1.1.2 misho 4: * Copyright 2009-2012 Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
1.1 misho 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:
1.1.1.4 ! misho 27: SLJIT_API_FUNC_ATTRIBUTE SLJIT_CONST char* sljit_get_platform_name(void)
1.1 misho 28: {
29: #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
1.1.1.2 misho 30: return "ARMv7" SLJIT_CPUINFO;
1.1 misho 31: #elif (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1.1.1.2 misho 32: return "ARMv5" SLJIT_CPUINFO;
1.1 misho 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:
1.1.1.4 ! misho 44: #define TMP_FREG1 (0)
! 45: #define TMP_FREG2 (SLJIT_FLOAT_REG6 + 1)
1.1 misho 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) \
1.1.1.4 ! misho 55: (((max_diff) / (sljit_si)sizeof(sljit_uw)) - (CONST_POOL_ALIGNMENT - 1))
1.1 misho 56:
1.1.1.2 misho 57: /* See sljit_emit_enter and sljit_emit_op0 if you want to change them. */
1.1 misho 58: static SLJIT_CONST sljit_ub reg_map[SLJIT_NO_REGISTERS + 5] = {
1.1.1.4 ! misho 59: 0, 0, 1, 2, 10, 11, 4, 5, 6, 7, 8, 13, 3, 12, 14, 15
1.1 misho 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
1.1.1.2 misho 87: #define BKPT 0xe1200070
1.1 misho 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
1.1.1.2 misho 101: #define UMULL 0xe0800090
1.1.1.4 ! misho 102: #define VABS_F32 0xeeb00ac0
! 103: #define VADD_F32 0xee300a00
! 104: #define VCMP_F32 0xeeb40a40
! 105: #define VDIV_F32 0xee800a00
! 106: #define VMOV_F32 0xeeb00a40
1.1 misho 107: #define VMRS 0xeef1fa10
1.1.1.4 ! misho 108: #define VMUL_F32 0xee200a00
! 109: #define VNEG_F32 0xeeb10a40
! 110: #define VSTR_F32 0xed000a00
! 111: #define VSUB_F32 0xee300a40
1.1 misho 112:
113: #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
114: /* Arm v7 specific instructions. */
115: #define MOVW 0xe3000000
116: #define MOVT 0xe3400000
117: #define SXTB 0xe6af0070
118: #define SXTH 0xe6bf0070
119: #define UXTB 0xe6ef0070
120: #define UXTH 0xe6ff0070
121: #endif
122:
123: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
124:
1.1.1.4 ! misho 125: static sljit_si push_cpool(struct sljit_compiler *compiler)
1.1 misho 126: {
127: /* Pushing the constant pool into the instruction stream. */
128: sljit_uw* inst;
129: sljit_uw* cpool_ptr;
130: sljit_uw* cpool_end;
1.1.1.4 ! misho 131: sljit_si i;
1.1 misho 132:
133: /* The label could point the address after the constant pool. */
134: if (compiler->last_label && compiler->last_label->size == compiler->size)
135: compiler->last_label->size += compiler->cpool_fill + (CONST_POOL_ALIGNMENT - 1) + 1;
136:
137: SLJIT_ASSERT(compiler->cpool_fill > 0 && compiler->cpool_fill <= CPOOL_SIZE);
138: inst = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
139: FAIL_IF(!inst);
140: compiler->size++;
141: *inst = 0xff000000 | compiler->cpool_fill;
142:
143: for (i = 0; i < CONST_POOL_ALIGNMENT - 1; i++) {
144: inst = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
145: FAIL_IF(!inst);
146: compiler->size++;
147: *inst = 0;
148: }
149:
150: cpool_ptr = compiler->cpool;
151: cpool_end = cpool_ptr + compiler->cpool_fill;
152: while (cpool_ptr < cpool_end) {
153: inst = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
154: FAIL_IF(!inst);
155: compiler->size++;
156: *inst = *cpool_ptr++;
157: }
158: compiler->cpool_diff = CONST_POOL_EMPTY;
159: compiler->cpool_fill = 0;
160: return SLJIT_SUCCESS;
161: }
162:
1.1.1.4 ! misho 163: static sljit_si push_inst(struct sljit_compiler *compiler, sljit_uw inst)
1.1 misho 164: {
165: sljit_uw* ptr;
166:
167: if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092)))
168: FAIL_IF(push_cpool(compiler));
169:
170: ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
171: FAIL_IF(!ptr);
172: compiler->size++;
173: *ptr = inst;
174: return SLJIT_SUCCESS;
175: }
176:
1.1.1.4 ! misho 177: static sljit_si push_inst_with_literal(struct sljit_compiler *compiler, sljit_uw inst, sljit_uw literal)
1.1 misho 178: {
179: sljit_uw* ptr;
180: sljit_uw cpool_index = CPOOL_SIZE;
181: sljit_uw* cpool_ptr;
182: sljit_uw* cpool_end;
183: sljit_ub* cpool_unique_ptr;
184:
185: if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092)))
186: FAIL_IF(push_cpool(compiler));
187: else if (compiler->cpool_fill > 0) {
188: cpool_ptr = compiler->cpool;
189: cpool_end = cpool_ptr + compiler->cpool_fill;
190: cpool_unique_ptr = compiler->cpool_unique;
191: do {
192: if ((*cpool_ptr == literal) && !(*cpool_unique_ptr)) {
193: cpool_index = cpool_ptr - compiler->cpool;
194: break;
195: }
196: cpool_ptr++;
197: cpool_unique_ptr++;
198: } while (cpool_ptr < cpool_end);
199: }
200:
201: if (cpool_index == CPOOL_SIZE) {
202: /* Must allocate a new entry in the literal pool. */
203: if (compiler->cpool_fill < CPOOL_SIZE) {
204: cpool_index = compiler->cpool_fill;
205: compiler->cpool_fill++;
206: }
207: else {
208: FAIL_IF(push_cpool(compiler));
209: cpool_index = 0;
210: compiler->cpool_fill = 1;
211: }
212: }
213:
214: SLJIT_ASSERT((inst & 0xfff) == 0);
215: ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
216: FAIL_IF(!ptr);
217: compiler->size++;
218: *ptr = inst | cpool_index;
219:
220: compiler->cpool[cpool_index] = literal;
221: compiler->cpool_unique[cpool_index] = 0;
222: if (compiler->cpool_diff == CONST_POOL_EMPTY)
223: compiler->cpool_diff = compiler->size;
224: return SLJIT_SUCCESS;
225: }
226:
1.1.1.4 ! misho 227: static sljit_si push_inst_with_unique_literal(struct sljit_compiler *compiler, sljit_uw inst, sljit_uw literal)
1.1 misho 228: {
229: sljit_uw* ptr;
230: if (SLJIT_UNLIKELY((compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092)) || compiler->cpool_fill >= CPOOL_SIZE))
231: FAIL_IF(push_cpool(compiler));
232:
233: SLJIT_ASSERT(compiler->cpool_fill < CPOOL_SIZE && (inst & 0xfff) == 0);
234: ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
235: FAIL_IF(!ptr);
236: compiler->size++;
237: *ptr = inst | compiler->cpool_fill;
238:
239: compiler->cpool[compiler->cpool_fill] = literal;
240: compiler->cpool_unique[compiler->cpool_fill] = 1;
241: compiler->cpool_fill++;
242: if (compiler->cpool_diff == CONST_POOL_EMPTY)
243: compiler->cpool_diff = compiler->size;
244: return SLJIT_SUCCESS;
245: }
246:
1.1.1.4 ! misho 247: static SLJIT_INLINE sljit_si prepare_blx(struct sljit_compiler *compiler)
1.1 misho 248: {
249: /* Place for at least two instruction (doesn't matter whether the first has a literal). */
250: if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4088)))
251: return push_cpool(compiler);
252: return SLJIT_SUCCESS;
253: }
254:
1.1.1.4 ! misho 255: static SLJIT_INLINE sljit_si emit_blx(struct sljit_compiler *compiler)
1.1 misho 256: {
257: /* Must follow tightly the previous instruction (to be able to convert it to bl instruction). */
258: SLJIT_ASSERT(compiler->cpool_diff == CONST_POOL_EMPTY || compiler->size - compiler->cpool_diff < MAX_DIFFERENCE(4092));
259: return push_inst(compiler, BLX | RM(TMP_REG1));
260: }
261:
262: static sljit_uw patch_pc_relative_loads(sljit_uw *last_pc_patch, sljit_uw *code_ptr, sljit_uw* const_pool, sljit_uw cpool_size)
263: {
264: sljit_uw diff;
265: sljit_uw ind;
266: sljit_uw counter = 0;
267: sljit_uw* clear_const_pool = const_pool;
268: sljit_uw* clear_const_pool_end = const_pool + cpool_size;
269:
270: SLJIT_ASSERT(const_pool - code_ptr <= CONST_POOL_ALIGNMENT);
271: /* Set unused flag for all literals in the constant pool.
272: I.e.: unused literals can belong to branches, which can be encoded as B or BL.
273: We can "compress" the constant pool by discarding these literals. */
274: while (clear_const_pool < clear_const_pool_end)
275: *clear_const_pool++ = (sljit_uw)(-1);
276:
277: while (last_pc_patch < code_ptr) {
278: /* Data transfer instruction with Rn == r15. */
279: if ((*last_pc_patch & 0x0c0f0000) == 0x040f0000) {
280: diff = const_pool - last_pc_patch;
281: ind = (*last_pc_patch) & 0xfff;
282:
283: /* Must be a load instruction with immediate offset. */
284: SLJIT_ASSERT(ind < cpool_size && !(*last_pc_patch & (1 << 25)) && (*last_pc_patch & (1 << 20)));
1.1.1.4 ! misho 285: if ((sljit_si)const_pool[ind] < 0) {
1.1 misho 286: const_pool[ind] = counter;
287: ind = counter;
288: counter++;
289: }
290: else
291: ind = const_pool[ind];
292:
293: SLJIT_ASSERT(diff >= 1);
294: if (diff >= 2 || ind > 0) {
295: diff = (diff + ind - 2) << 2;
296: SLJIT_ASSERT(diff <= 0xfff);
297: *last_pc_patch = (*last_pc_patch & ~0xfff) | diff;
298: }
299: else
300: *last_pc_patch = (*last_pc_patch & ~(0xfff | (1 << 23))) | 0x004;
301: }
302: last_pc_patch++;
303: }
304: return counter;
305: }
306:
307: /* In some rare ocasions we may need future patches. The probability is close to 0 in practice. */
308: struct future_patch {
309: struct future_patch* next;
1.1.1.4 ! misho 310: sljit_si index;
! 311: sljit_si value;
1.1 misho 312: };
313:
1.1.1.4 ! misho 314: static SLJIT_INLINE sljit_si resolve_const_pool_index(struct future_patch **first_patch, sljit_uw cpool_current_index, sljit_uw *cpool_start_address, sljit_uw *buf_ptr)
1.1 misho 315: {
1.1.1.4 ! misho 316: sljit_si value;
1.1 misho 317: struct future_patch *curr_patch, *prev_patch;
318:
319: /* Using the values generated by patch_pc_relative_loads. */
320: if (!*first_patch)
1.1.1.4 ! misho 321: value = (sljit_si)cpool_start_address[cpool_current_index];
1.1 misho 322: else {
323: curr_patch = *first_patch;
324: prev_patch = 0;
325: while (1) {
326: if (!curr_patch) {
1.1.1.4 ! misho 327: value = (sljit_si)cpool_start_address[cpool_current_index];
1.1 misho 328: break;
329: }
330: if ((sljit_uw)curr_patch->index == cpool_current_index) {
331: value = curr_patch->value;
332: if (prev_patch)
333: prev_patch->next = curr_patch->next;
334: else
335: *first_patch = curr_patch->next;
336: SLJIT_FREE(curr_patch);
337: break;
338: }
339: prev_patch = curr_patch;
340: curr_patch = curr_patch->next;
341: }
342: }
343:
344: if (value >= 0) {
345: if ((sljit_uw)value > cpool_current_index) {
346: curr_patch = (struct future_patch*)SLJIT_MALLOC(sizeof(struct future_patch));
347: if (!curr_patch) {
348: while (*first_patch) {
349: curr_patch = *first_patch;
350: *first_patch = (*first_patch)->next;
351: SLJIT_FREE(curr_patch);
352: }
353: return SLJIT_ERR_ALLOC_FAILED;
354: }
355: curr_patch->next = *first_patch;
356: curr_patch->index = value;
357: curr_patch->value = cpool_start_address[value];
358: *first_patch = curr_patch;
359: }
360: cpool_start_address[value] = *buf_ptr;
361: }
362: return SLJIT_SUCCESS;
363: }
364:
365: #else
366:
1.1.1.4 ! misho 367: static sljit_si push_inst(struct sljit_compiler *compiler, sljit_uw inst)
1.1 misho 368: {
369: sljit_uw* ptr;
370:
371: ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
372: FAIL_IF(!ptr);
373: compiler->size++;
374: *ptr = inst;
375: return SLJIT_SUCCESS;
376: }
377:
1.1.1.4 ! misho 378: static SLJIT_INLINE sljit_si emit_imm(struct sljit_compiler *compiler, sljit_si reg, sljit_sw imm)
1.1 misho 379: {
380: FAIL_IF(push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | (imm & 0xfff)));
381: return push_inst(compiler, MOVT | RD(reg) | ((imm >> 12) & 0xf0000) | ((imm >> 16) & 0xfff));
382: }
383:
384: #endif
385:
1.1.1.4 ! misho 386: static SLJIT_INLINE sljit_si detect_jump_type(struct sljit_jump *jump, sljit_uw *code_ptr, sljit_uw *code)
1.1 misho 387: {
1.1.1.4 ! misho 388: sljit_sw diff;
1.1 misho 389:
390: if (jump->flags & SLJIT_REWRITABLE_JUMP)
391: return 0;
392:
393: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
394: if (jump->flags & IS_BL)
395: code_ptr--;
396:
397: if (jump->flags & JUMP_ADDR)
1.1.1.4 ! misho 398: diff = ((sljit_sw)jump->u.target - (sljit_sw)(code_ptr + 2));
1.1 misho 399: else {
400: SLJIT_ASSERT(jump->flags & JUMP_LABEL);
1.1.1.4 ! misho 401: diff = ((sljit_sw)(code + jump->u.label->size) - (sljit_sw)(code_ptr + 2));
1.1 misho 402: }
403:
404: /* Branch to Thumb code has not been optimized yet. */
405: if (diff & 0x3)
406: return 0;
407:
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)
1.1.1.4 ! misho 423: diff = ((sljit_sw)jump->u.target - (sljit_sw)code_ptr);
1.1 misho 424: else {
425: SLJIT_ASSERT(jump->flags & JUMP_LABEL);
1.1.1.4 ! misho 426: diff = ((sljit_sw)(code + jump->u.label->size) - (sljit_sw)code_ptr);
1.1 misho 427: }
428:
429: /* Branch to Thumb code has not been optimized yet. */
430: if (diff & 0x3)
431: return 0;
432:
433: if (diff <= 0x01ffffff && diff >= -0x02000000) {
434: code_ptr -= 2;
435: *code_ptr = ((jump->flags & IS_BL) ? (BL - CONDITIONAL) : (B - CONDITIONAL)) | (code_ptr[2] & COND_MASK);
436: jump->flags |= PATCH_B;
437: return 1;
438: }
439: #endif
440: return 0;
441: }
442:
1.1.1.4 ! misho 443: static SLJIT_INLINE void inline_set_jump_addr(sljit_uw addr, sljit_uw new_addr, sljit_si flush)
1.1 misho 444: {
445: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
446: sljit_uw *ptr = (sljit_uw*)addr;
447: sljit_uw *inst = (sljit_uw*)ptr[0];
448: sljit_uw mov_pc = ptr[1];
1.1.1.4 ! misho 449: sljit_si bl = (mov_pc & 0x0000f000) != RD(TMP_PC);
! 450: sljit_sw diff = (sljit_sw)(((sljit_sw)new_addr - (sljit_sw)(inst + 2)) >> 2);
1.1 misho 451:
452: if (diff <= 0x7fffff && diff >= -0x800000) {
453: /* Turn to branch. */
454: if (!bl) {
455: inst[0] = (mov_pc & COND_MASK) | (B - CONDITIONAL) | (diff & 0xffffff);
456: if (flush) {
457: SLJIT_CACHE_FLUSH(inst, inst + 1);
458: }
459: } else {
460: inst[0] = (mov_pc & COND_MASK) | (BL - CONDITIONAL) | (diff & 0xffffff);
461: inst[1] = NOP;
462: if (flush) {
463: SLJIT_CACHE_FLUSH(inst, inst + 2);
464: }
465: }
466: } else {
467: /* Get the position of the constant. */
468: if (mov_pc & (1 << 23))
469: ptr = inst + ((mov_pc & 0xfff) >> 2) + 2;
470: else
471: ptr = inst + 1;
472:
473: if (*inst != mov_pc) {
474: inst[0] = mov_pc;
475: if (!bl) {
476: if (flush) {
477: SLJIT_CACHE_FLUSH(inst, inst + 1);
478: }
479: } else {
480: inst[1] = BLX | RM(TMP_REG1);
481: if (flush) {
482: SLJIT_CACHE_FLUSH(inst, inst + 2);
483: }
484: }
485: }
486: *ptr = new_addr;
487: }
488: #else
489: sljit_uw *inst = (sljit_uw*)addr;
490: SLJIT_ASSERT((inst[0] & 0xfff00000) == MOVW && (inst[1] & 0xfff00000) == MOVT);
491: inst[0] = MOVW | (inst[0] & 0xf000) | ((new_addr << 4) & 0xf0000) | (new_addr & 0xfff);
492: inst[1] = MOVT | (inst[1] & 0xf000) | ((new_addr >> 12) & 0xf0000) | ((new_addr >> 16) & 0xfff);
493: if (flush) {
494: SLJIT_CACHE_FLUSH(inst, inst + 2);
495: }
496: #endif
497: }
498:
1.1.1.4 ! misho 499: static sljit_uw get_imm(sljit_uw imm);
1.1 misho 500:
1.1.1.4 ! misho 501: static SLJIT_INLINE void inline_set_const(sljit_uw addr, sljit_sw new_constant, sljit_si flush)
1.1 misho 502: {
503: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
504: sljit_uw *ptr = (sljit_uw*)addr;
505: sljit_uw *inst = (sljit_uw*)ptr[0];
506: sljit_uw ldr_literal = ptr[1];
507: sljit_uw src2;
508:
1.1.1.4 ! misho 509: src2 = get_imm(new_constant);
1.1 misho 510: if (src2) {
511: *inst = 0xe3a00000 | (ldr_literal & 0xf000) | src2;
512: if (flush) {
513: SLJIT_CACHE_FLUSH(inst, inst + 1);
514: }
515: return;
516: }
517:
1.1.1.4 ! misho 518: src2 = get_imm(~new_constant);
1.1 misho 519: if (src2) {
520: *inst = 0xe3e00000 | (ldr_literal & 0xf000) | src2;
521: if (flush) {
522: SLJIT_CACHE_FLUSH(inst, inst + 1);
523: }
524: return;
525: }
526:
527: if (ldr_literal & (1 << 23))
528: ptr = inst + ((ldr_literal & 0xfff) >> 2) + 2;
529: else
530: ptr = inst + 1;
531:
532: if (*inst != ldr_literal) {
533: *inst = ldr_literal;
534: if (flush) {
535: SLJIT_CACHE_FLUSH(inst, inst + 1);
536: }
537: }
538: *ptr = new_constant;
539: #else
540: sljit_uw *inst = (sljit_uw*)addr;
541: SLJIT_ASSERT((inst[0] & 0xfff00000) == MOVW && (inst[1] & 0xfff00000) == MOVT);
542: inst[0] = MOVW | (inst[0] & 0xf000) | ((new_constant << 4) & 0xf0000) | (new_constant & 0xfff);
543: inst[1] = MOVT | (inst[1] & 0xf000) | ((new_constant >> 12) & 0xf0000) | ((new_constant >> 16) & 0xfff);
544: if (flush) {
545: SLJIT_CACHE_FLUSH(inst, inst + 2);
546: }
547: #endif
548: }
549:
550: SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler)
551: {
552: struct sljit_memory_fragment *buf;
553: sljit_uw *code;
554: sljit_uw *code_ptr;
555: sljit_uw *buf_ptr;
556: sljit_uw *buf_end;
557: sljit_uw size;
558: sljit_uw word_count;
559: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
560: sljit_uw cpool_size;
561: sljit_uw cpool_skip_alignment;
562: sljit_uw cpool_current_index;
563: sljit_uw *cpool_start_address;
564: sljit_uw *last_pc_patch;
565: struct future_patch *first_patch;
566: #endif
567:
568: struct sljit_label *label;
569: struct sljit_jump *jump;
570: struct sljit_const *const_;
571:
572: CHECK_ERROR_PTR();
573: check_sljit_generate_code(compiler);
574: reverse_buf(compiler);
575:
576: /* Second code generation pass. */
577: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
578: size = compiler->size + (compiler->patches << 1);
579: if (compiler->cpool_fill > 0)
580: size += compiler->cpool_fill + CONST_POOL_ALIGNMENT - 1;
581: #else
582: size = compiler->size;
583: #endif
584: code = (sljit_uw*)SLJIT_MALLOC_EXEC(size * sizeof(sljit_uw));
585: PTR_FAIL_WITH_EXEC_IF(code);
586: buf = compiler->buf;
587:
588: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
589: cpool_size = 0;
590: cpool_skip_alignment = 0;
591: cpool_current_index = 0;
592: cpool_start_address = NULL;
593: first_patch = NULL;
594: last_pc_patch = code;
595: #endif
596:
597: code_ptr = code;
598: word_count = 0;
599:
600: label = compiler->labels;
601: jump = compiler->jumps;
602: const_ = compiler->consts;
603:
604: if (label && label->size == 0) {
605: label->addr = (sljit_uw)code;
606: label->size = 0;
607: label = label->next;
608: }
609:
610: do {
611: buf_ptr = (sljit_uw*)buf->memory;
612: buf_end = buf_ptr + (buf->used_size >> 2);
613: do {
614: word_count++;
615: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
616: if (cpool_size > 0) {
617: if (cpool_skip_alignment > 0) {
618: buf_ptr++;
619: cpool_skip_alignment--;
620: }
621: else {
622: if (SLJIT_UNLIKELY(resolve_const_pool_index(&first_patch, cpool_current_index, cpool_start_address, buf_ptr))) {
623: SLJIT_FREE_EXEC(code);
624: compiler->error = SLJIT_ERR_ALLOC_FAILED;
625: return NULL;
626: }
627: buf_ptr++;
628: if (++cpool_current_index >= cpool_size) {
629: SLJIT_ASSERT(!first_patch);
630: cpool_size = 0;
631: if (label && label->size == word_count) {
632: /* Points after the current instruction. */
633: label->addr = (sljit_uw)code_ptr;
634: label->size = code_ptr - code;
635: label = label->next;
636: }
637: }
638: }
639: }
640: else if ((*buf_ptr & 0xff000000) != PUSH_POOL) {
641: #endif
642: *code_ptr = *buf_ptr++;
643: /* These structures are ordered by their address. */
644: SLJIT_ASSERT(!label || label->size >= word_count);
645: SLJIT_ASSERT(!jump || jump->addr >= word_count);
646: SLJIT_ASSERT(!const_ || const_->addr >= word_count);
647: if (jump && jump->addr == word_count) {
648: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
649: if (detect_jump_type(jump, code_ptr, code))
650: code_ptr--;
651: jump->addr = (sljit_uw)code_ptr;
652: #else
653: jump->addr = (sljit_uw)(code_ptr - 2);
654: if (detect_jump_type(jump, code_ptr, code))
655: code_ptr -= 2;
656: #endif
657: jump = jump->next;
658: }
659: if (label && label->size == word_count) {
660: /* code_ptr can be affected above. */
661: label->addr = (sljit_uw)(code_ptr + 1);
662: label->size = (code_ptr + 1) - code;
663: label = label->next;
664: }
665: if (const_ && const_->addr == word_count) {
666: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
667: const_->addr = (sljit_uw)code_ptr;
668: #else
669: const_->addr = (sljit_uw)(code_ptr - 1);
670: #endif
671: const_ = const_->next;
672: }
673: code_ptr++;
674: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
675: }
676: else {
677: /* Fortunately, no need to shift. */
678: cpool_size = *buf_ptr++ & ~PUSH_POOL;
679: SLJIT_ASSERT(cpool_size > 0);
680: cpool_start_address = ALIGN_INSTRUCTION(code_ptr + 1);
681: cpool_current_index = patch_pc_relative_loads(last_pc_patch, code_ptr, cpool_start_address, cpool_size);
682: if (cpool_current_index > 0) {
683: /* Unconditional branch. */
684: *code_ptr = B | (((cpool_start_address - code_ptr) + cpool_current_index - 2) & ~PUSH_POOL);
685: code_ptr = cpool_start_address + cpool_current_index;
686: }
687: cpool_skip_alignment = CONST_POOL_ALIGNMENT - 1;
688: cpool_current_index = 0;
689: last_pc_patch = code_ptr;
690: }
691: #endif
692: } while (buf_ptr < buf_end);
693: buf = buf->next;
694: } while (buf);
695:
696: SLJIT_ASSERT(!label);
697: SLJIT_ASSERT(!jump);
698: SLJIT_ASSERT(!const_);
699:
700: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
701: SLJIT_ASSERT(cpool_size == 0);
702: if (compiler->cpool_fill > 0) {
703: cpool_start_address = ALIGN_INSTRUCTION(code_ptr);
704: cpool_current_index = patch_pc_relative_loads(last_pc_patch, code_ptr, cpool_start_address, compiler->cpool_fill);
705: if (cpool_current_index > 0)
706: code_ptr = cpool_start_address + cpool_current_index;
707:
708: buf_ptr = compiler->cpool;
709: buf_end = buf_ptr + compiler->cpool_fill;
710: cpool_current_index = 0;
711: while (buf_ptr < buf_end) {
712: if (SLJIT_UNLIKELY(resolve_const_pool_index(&first_patch, cpool_current_index, cpool_start_address, buf_ptr))) {
713: SLJIT_FREE_EXEC(code);
714: compiler->error = SLJIT_ERR_ALLOC_FAILED;
715: return NULL;
716: }
717: buf_ptr++;
718: cpool_current_index++;
719: }
720: SLJIT_ASSERT(!first_patch);
721: }
722: #endif
723:
724: jump = compiler->jumps;
725: while (jump) {
726: buf_ptr = (sljit_uw*)jump->addr;
727:
728: if (jump->flags & PATCH_B) {
729: if (!(jump->flags & JUMP_ADDR)) {
730: SLJIT_ASSERT(jump->flags & JUMP_LABEL);
1.1.1.4 ! misho 731: SLJIT_ASSERT(((sljit_sw)jump->u.label->addr - (sljit_sw)(buf_ptr + 2)) <= 0x01ffffff && ((sljit_sw)jump->u.label->addr - (sljit_sw)(buf_ptr + 2)) >= -0x02000000);
! 732: *buf_ptr |= (((sljit_sw)jump->u.label->addr - (sljit_sw)(buf_ptr + 2)) >> 2) & 0x00ffffff;
1.1 misho 733: }
734: else {
1.1.1.4 ! misho 735: SLJIT_ASSERT(((sljit_sw)jump->u.target - (sljit_sw)(buf_ptr + 2)) <= 0x01ffffff && ((sljit_sw)jump->u.target - (sljit_sw)(buf_ptr + 2)) >= -0x02000000);
! 736: *buf_ptr |= (((sljit_sw)jump->u.target - (sljit_sw)(buf_ptr + 2)) >> 2) & 0x00ffffff;
1.1 misho 737: }
738: }
739: else if (jump->flags & SLJIT_REWRITABLE_JUMP) {
740: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
741: jump->addr = (sljit_uw)code_ptr;
742: code_ptr[0] = (sljit_uw)buf_ptr;
743: code_ptr[1] = *buf_ptr;
744: inline_set_jump_addr((sljit_uw)code_ptr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0);
745: code_ptr += 2;
746: #else
747: inline_set_jump_addr((sljit_uw)buf_ptr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0);
748: #endif
749: }
750: else {
751: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
752: if (jump->flags & IS_BL)
753: buf_ptr--;
754: if (*buf_ptr & (1 << 23))
755: buf_ptr += ((*buf_ptr & 0xfff) >> 2) + 2;
756: else
757: buf_ptr += 1;
758: *buf_ptr = (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target;
759: #else
760: inline_set_jump_addr((sljit_uw)buf_ptr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0);
761: #endif
762: }
763: jump = jump->next;
764: }
765:
766: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
767: const_ = compiler->consts;
768: while (const_) {
769: buf_ptr = (sljit_uw*)const_->addr;
770: const_->addr = (sljit_uw)code_ptr;
771:
772: code_ptr[0] = (sljit_uw)buf_ptr;
773: code_ptr[1] = *buf_ptr;
774: if (*buf_ptr & (1 << 23))
775: buf_ptr += ((*buf_ptr & 0xfff) >> 2) + 2;
776: else
777: buf_ptr += 1;
778: /* Set the value again (can be a simple constant). */
779: inline_set_const((sljit_uw)code_ptr, *buf_ptr, 0);
780: code_ptr += 2;
781:
782: const_ = const_->next;
783: }
784: #endif
785:
1.1.1.4 ! misho 786: SLJIT_ASSERT(code_ptr - code <= (sljit_si)size);
1.1 misho 787:
788: compiler->error = SLJIT_ERR_COMPILED;
1.1.1.4 ! misho 789: compiler->executable_size = (code_ptr - code) * sizeof(sljit_uw);
! 790: SLJIT_CACHE_FLUSH(code, code_ptr);
1.1 misho 791: return code;
792: }
793:
1.1.1.4 ! misho 794: /* --------------------------------------------------------------------- */
! 795: /* Entry, exit */
! 796: /* --------------------------------------------------------------------- */
! 797:
1.1 misho 798: /* emit_op inp_flags.
799: WRITE_BACK must be the first, since it is a flag. */
800: #define WRITE_BACK 0x01
801: #define ALLOW_IMM 0x02
802: #define ALLOW_INV_IMM 0x04
803: #define ALLOW_ANY_IMM (ALLOW_IMM | ALLOW_INV_IMM)
804: #define ARG_TEST 0x08
805:
806: /* Creates an index in data_transfer_insts array. */
807: #define WORD_DATA 0x00
808: #define BYTE_DATA 0x10
809: #define HALF_DATA 0x20
810: #define SIGNED_DATA 0x40
811: #define LOAD_DATA 0x80
812:
813: #define EMIT_INSTRUCTION(inst) \
814: FAIL_IF(push_inst(compiler, (inst)))
815:
816: /* Condition: AL. */
817: #define EMIT_DATA_PROCESS_INS(opcode, set_flags, dst, src1, src2) \
818: (0xe0000000 | ((opcode) << 21) | (set_flags) | RD(dst) | RN(src1) | (src2))
819:
1.1.1.4 ! misho 820: static sljit_si emit_op(struct sljit_compiler *compiler, sljit_si op, sljit_si inp_flags,
! 821: sljit_si dst, sljit_sw dstw,
! 822: sljit_si src1, sljit_sw src1w,
! 823: sljit_si src2, sljit_sw src2w);
1.1 misho 824:
1.1.1.4 ! misho 825: SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_enter(struct sljit_compiler *compiler, sljit_si args, sljit_si scratches, sljit_si saveds, sljit_si local_size)
1.1 misho 826: {
1.1.1.4 ! misho 827: sljit_si size;
1.1 misho 828: sljit_uw push;
829:
830: CHECK_ERROR();
1.1.1.4 ! misho 831: check_sljit_emit_enter(compiler, args, scratches, saveds, local_size);
1.1 misho 832:
1.1.1.4 ! misho 833: compiler->scratches = scratches;
1.1.1.2 misho 834: compiler->saveds = saveds;
1.1.1.3 misho 835: #if (defined SLJIT_DEBUG && SLJIT_DEBUG)
836: compiler->logical_local_size = local_size;
837: #endif
1.1 misho 838:
1.1.1.2 misho 839: /* Push saved registers, temporary registers
1.1 misho 840: stmdb sp!, {..., lr} */
841: push = PUSH | (1 << 14);
1.1.1.4 ! misho 842: if (scratches >= 5)
1.1 misho 843: push |= 1 << 11;
1.1.1.4 ! misho 844: if (scratches >= 4)
1.1 misho 845: push |= 1 << 10;
1.1.1.2 misho 846: if (saveds >= 5)
1.1 misho 847: push |= 1 << 8;
1.1.1.2 misho 848: if (saveds >= 4)
1.1 misho 849: push |= 1 << 7;
1.1.1.2 misho 850: if (saveds >= 3)
1.1 misho 851: push |= 1 << 6;
1.1.1.2 misho 852: if (saveds >= 2)
1.1 misho 853: push |= 1 << 5;
1.1.1.2 misho 854: if (saveds >= 1)
1.1 misho 855: push |= 1 << 4;
856: EMIT_INSTRUCTION(push);
857:
858: /* Stack must be aligned to 8 bytes: */
1.1.1.2 misho 859: size = (1 + saveds) * sizeof(sljit_uw);
1.1.1.4 ! misho 860: if (scratches >= 4)
! 861: size += (scratches - 3) * sizeof(sljit_uw);
1.1 misho 862: local_size += size;
863: local_size = (local_size + 7) & ~7;
864: local_size -= size;
865: compiler->local_size = local_size;
866: if (local_size > 0)
867: FAIL_IF(emit_op(compiler, SLJIT_SUB, ALLOW_IMM, SLJIT_LOCALS_REG, 0, SLJIT_LOCALS_REG, 0, SLJIT_IMM, local_size));
868:
869: if (args >= 1)
1.1.1.4 ! misho 870: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_SAVED_REG1, SLJIT_UNUSED, RM(SLJIT_SCRATCH_REG1)));
1.1 misho 871: if (args >= 2)
1.1.1.4 ! misho 872: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_SAVED_REG2, SLJIT_UNUSED, RM(SLJIT_SCRATCH_REG2)));
1.1 misho 873: if (args >= 3)
1.1.1.4 ! misho 874: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_SAVED_REG3, SLJIT_UNUSED, RM(SLJIT_SCRATCH_REG3)));
1.1 misho 875:
876: return SLJIT_SUCCESS;
877: }
878:
1.1.1.4 ! misho 879: SLJIT_API_FUNC_ATTRIBUTE void sljit_set_context(struct sljit_compiler *compiler, sljit_si args, sljit_si scratches, sljit_si saveds, sljit_si local_size)
1.1 misho 880: {
1.1.1.4 ! misho 881: sljit_si size;
1.1 misho 882:
883: CHECK_ERROR_VOID();
1.1.1.4 ! misho 884: check_sljit_set_context(compiler, args, scratches, saveds, local_size);
1.1 misho 885:
1.1.1.4 ! misho 886: compiler->scratches = scratches;
1.1.1.2 misho 887: compiler->saveds = saveds;
1.1.1.3 misho 888: #if (defined SLJIT_DEBUG && SLJIT_DEBUG)
889: compiler->logical_local_size = local_size;
890: #endif
1.1 misho 891:
1.1.1.2 misho 892: size = (1 + saveds) * sizeof(sljit_uw);
1.1.1.4 ! misho 893: if (scratches >= 4)
! 894: size += (scratches - 3) * sizeof(sljit_uw);
1.1 misho 895: local_size += size;
896: local_size = (local_size + 7) & ~7;
897: local_size -= size;
898: compiler->local_size = local_size;
899: }
900:
1.1.1.4 ! misho 901: SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_return(struct sljit_compiler *compiler, sljit_si op, sljit_si src, sljit_sw srcw)
1.1 misho 902: {
903: sljit_uw pop;
904:
905: CHECK_ERROR();
1.1.1.2 misho 906: check_sljit_emit_return(compiler, op, src, srcw);
1.1 misho 907:
1.1.1.2 misho 908: FAIL_IF(emit_mov_before_return(compiler, op, src, srcw));
1.1 misho 909:
910: if (compiler->local_size > 0)
911: FAIL_IF(emit_op(compiler, SLJIT_ADD, ALLOW_IMM, SLJIT_LOCALS_REG, 0, SLJIT_LOCALS_REG, 0, SLJIT_IMM, compiler->local_size));
912:
913: pop = POP | (1 << 15);
1.1.1.2 misho 914: /* Push saved registers, temporary registers
1.1 misho 915: ldmia sp!, {..., pc} */
1.1.1.4 ! misho 916: if (compiler->scratches >= 5)
1.1 misho 917: pop |= 1 << 11;
1.1.1.4 ! misho 918: if (compiler->scratches >= 4)
1.1 misho 919: pop |= 1 << 10;
1.1.1.2 misho 920: if (compiler->saveds >= 5)
1.1 misho 921: pop |= 1 << 8;
1.1.1.2 misho 922: if (compiler->saveds >= 4)
1.1 misho 923: pop |= 1 << 7;
1.1.1.2 misho 924: if (compiler->saveds >= 3)
1.1 misho 925: pop |= 1 << 6;
1.1.1.2 misho 926: if (compiler->saveds >= 2)
1.1 misho 927: pop |= 1 << 5;
1.1.1.2 misho 928: if (compiler->saveds >= 1)
1.1 misho 929: pop |= 1 << 4;
930:
931: return push_inst(compiler, pop);
932: }
933:
934: /* --------------------------------------------------------------------- */
935: /* Operators */
936: /* --------------------------------------------------------------------- */
937:
938: /* s/l - store/load (1 bit)
939: u/s - signed/unsigned (1 bit)
940: w/b/h/N - word/byte/half/NOT allowed (2 bit)
941: It contans 16 items, but not all are different. */
942:
1.1.1.4 ! misho 943: static sljit_sw data_transfer_insts[16] = {
1.1 misho 944: /* s u w */ 0xe5000000 /* str */,
945: /* s u b */ 0xe5400000 /* strb */,
946: /* s u h */ 0xe10000b0 /* strh */,
947: /* s u N */ 0x00000000 /* not allowed */,
948: /* s s w */ 0xe5000000 /* str */,
949: /* s s b */ 0xe5400000 /* strb */,
950: /* s s h */ 0xe10000b0 /* strh */,
951: /* s s N */ 0x00000000 /* not allowed */,
952:
953: /* l u w */ 0xe5100000 /* ldr */,
954: /* l u b */ 0xe5500000 /* ldrb */,
955: /* l u h */ 0xe11000b0 /* ldrh */,
956: /* l u N */ 0x00000000 /* not allowed */,
957: /* l s w */ 0xe5100000 /* ldr */,
958: /* l s b */ 0xe11000d0 /* ldrsb */,
959: /* l s h */ 0xe11000f0 /* ldrsh */,
960: /* l s N */ 0x00000000 /* not allowed */,
961: };
962:
963: #define EMIT_DATA_TRANSFER(type, add, wb, target, base1, base2) \
964: (data_transfer_insts[(type) >> 4] | ((add) << 23) | ((wb) << 21) | (reg_map[target] << 12) | (reg_map[base1] << 16) | (base2))
965: /* Normal ldr/str instruction.
966: Type2: ldrsb, ldrh, ldrsh */
967: #define IS_TYPE1_TRANSFER(type) \
968: (data_transfer_insts[(type) >> 4] & 0x04000000)
969: #define TYPE2_TRANSFER_IMM(imm) \
970: (((imm) & 0xf) | (((imm) & 0xf0) << 4) | (1 << 22))
971:
972: /* flags: */
973: /* Arguments are swapped. */
974: #define ARGS_SWAPPED 0x01
975: /* Inverted immediate. */
976: #define INV_IMM 0x02
977: /* Source and destination is register. */
978: #define REG_DEST 0x04
979: #define REG_SOURCE 0x08
980: /* One instruction is enough. */
981: #define FAST_DEST 0x10
982: /* Multiple instructions are required. */
983: #define SLOW_DEST 0x20
984: /* SET_FLAGS must be (1 << 20) as it is also the value of S bit (can be used for optimization). */
985: #define SET_FLAGS (1 << 20)
986: /* dst: reg
987: src1: reg
988: src2: reg or imm (if allowed)
989: SRC2_IMM must be (1 << 25) as it is also the value of I bit (can be used for optimization). */
990: #define SRC2_IMM (1 << 25)
991:
992: #define EMIT_DATA_PROCESS_INS_AND_RETURN(opcode) \
993: return push_inst(compiler, EMIT_DATA_PROCESS_INS(opcode, flags & SET_FLAGS, dst, src1, (src2 & SRC2_IMM) ? src2 : RM(src2)))
994:
995: #define EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(opcode, dst, src1, src2) \
996: return push_inst(compiler, EMIT_DATA_PROCESS_INS(opcode, flags & SET_FLAGS, dst, src1, src2))
997:
998: #define EMIT_SHIFT_INS_AND_RETURN(opcode) \
999: SLJIT_ASSERT(!(flags & INV_IMM) && !(src2 & SRC2_IMM)); \
1000: if (compiler->shift_imm != 0x20) { \
1001: SLJIT_ASSERT(src1 == TMP_REG1); \
1002: SLJIT_ASSERT(!(flags & ARGS_SWAPPED)); \
1.1.1.2 misho 1003: if (compiler->shift_imm != 0) \
1004: 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])); \
1005: return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, flags & SET_FLAGS, dst, SLJIT_UNUSED, reg_map[src2])); \
1.1 misho 1006: } \
1007: 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])));
1008:
1.1.1.4 ! misho 1009: static SLJIT_INLINE sljit_si emit_single_op(struct sljit_compiler *compiler, sljit_si op, sljit_si flags,
! 1010: sljit_si dst, sljit_si src1, sljit_si src2)
1.1 misho 1011: {
1.1.1.4 ! misho 1012: sljit_sw mul_inst;
1.1 misho 1013:
1014: switch (GET_OPCODE(op)) {
1.1.1.4 ! misho 1015: case SLJIT_MOV:
! 1016: SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
! 1017: if (dst != src2) {
! 1018: if (src2 & SRC2_IMM) {
! 1019: if (flags & INV_IMM)
! 1020: EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
! 1021: EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
! 1022: }
! 1023: EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, reg_map[src2]);
! 1024: }
! 1025: return SLJIT_SUCCESS;
! 1026:
! 1027: case SLJIT_MOV_UB:
! 1028: case SLJIT_MOV_SB:
! 1029: SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
! 1030: if ((flags & (REG_DEST | REG_SOURCE)) == (REG_DEST | REG_SOURCE)) {
! 1031: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
! 1032: if (op == SLJIT_MOV_UB)
! 1033: return push_inst(compiler, EMIT_DATA_PROCESS_INS(AND_DP, 0, dst, src2, SRC2_IMM | 0xff));
! 1034: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (24 << 7) | reg_map[src2]));
! 1035: 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]));
! 1036: #else
! 1037: return push_inst(compiler, (op == SLJIT_MOV_UB ? UXTB : SXTB) | RD(dst) | RM(src2));
! 1038: #endif
! 1039: }
! 1040: else if (dst != src2) {
! 1041: SLJIT_ASSERT(src2 & SRC2_IMM);
! 1042: if (flags & INV_IMM)
! 1043: EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
! 1044: EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
! 1045: }
! 1046: return SLJIT_SUCCESS;
! 1047:
! 1048: case SLJIT_MOV_UH:
! 1049: case SLJIT_MOV_SH:
! 1050: SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
! 1051: if ((flags & (REG_DEST | REG_SOURCE)) == (REG_DEST | REG_SOURCE)) {
! 1052: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
! 1053: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (16 << 7) | reg_map[src2]));
! 1054: 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]));
! 1055: #else
! 1056: return push_inst(compiler, (op == SLJIT_MOV_UH ? UXTH : SXTH) | RD(dst) | RM(src2));
! 1057: #endif
! 1058: }
! 1059: else if (dst != src2) {
! 1060: SLJIT_ASSERT(src2 & SRC2_IMM);
! 1061: if (flags & INV_IMM)
! 1062: EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
! 1063: EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
! 1064: }
! 1065: return SLJIT_SUCCESS;
! 1066:
! 1067: case SLJIT_NOT:
! 1068: if (src2 & SRC2_IMM) {
! 1069: if (flags & INV_IMM)
! 1070: EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
! 1071: EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
! 1072: }
! 1073: EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, RM(src2));
! 1074:
! 1075: case SLJIT_CLZ:
! 1076: SLJIT_ASSERT(!(flags & INV_IMM));
! 1077: SLJIT_ASSERT(!(src2 & SRC2_IMM));
! 1078: FAIL_IF(push_inst(compiler, CLZ | RD(dst) | RM(src2)));
! 1079: if (flags & SET_FLAGS)
! 1080: EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(CMP_DP, SLJIT_UNUSED, dst, SRC2_IMM);
! 1081: return SLJIT_SUCCESS;
! 1082:
1.1 misho 1083: case SLJIT_ADD:
1084: SLJIT_ASSERT(!(flags & INV_IMM));
1085: EMIT_DATA_PROCESS_INS_AND_RETURN(ADD_DP);
1086:
1087: case SLJIT_ADDC:
1088: SLJIT_ASSERT(!(flags & INV_IMM));
1089: EMIT_DATA_PROCESS_INS_AND_RETURN(ADC_DP);
1090:
1091: case SLJIT_SUB:
1092: SLJIT_ASSERT(!(flags & INV_IMM));
1093: if (!(flags & ARGS_SWAPPED))
1094: EMIT_DATA_PROCESS_INS_AND_RETURN(SUB_DP);
1095: EMIT_DATA_PROCESS_INS_AND_RETURN(RSB_DP);
1096:
1097: case SLJIT_SUBC:
1098: SLJIT_ASSERT(!(flags & INV_IMM));
1099: if (!(flags & ARGS_SWAPPED))
1100: EMIT_DATA_PROCESS_INS_AND_RETURN(SBC_DP);
1101: EMIT_DATA_PROCESS_INS_AND_RETURN(RSC_DP);
1102:
1103: case SLJIT_MUL:
1104: SLJIT_ASSERT(!(flags & INV_IMM));
1105: SLJIT_ASSERT(!(src2 & SRC2_IMM));
1106: if (SLJIT_UNLIKELY(op & SLJIT_SET_O))
1107: mul_inst = SMULL | (reg_map[TMP_REG3] << 16) | (reg_map[dst] << 12);
1108: else
1109: mul_inst = MUL | (reg_map[dst] << 16);
1110:
1111: if (dst != src2)
1112: FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src1] << 8) | reg_map[src2]));
1113: else if (dst != src1)
1114: FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src2] << 8) | reg_map[src1]));
1115: else {
1116: /* Rm and Rd must not be the same register. */
1117: SLJIT_ASSERT(dst != TMP_REG1);
1118: FAIL_IF(push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, reg_map[src2])));
1119: FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src2] << 8) | reg_map[TMP_REG1]));
1120: }
1121:
1122: if (!(op & SLJIT_SET_O))
1123: return SLJIT_SUCCESS;
1124:
1125: /* We need to use TMP_REG3. */
1126: compiler->cache_arg = 0;
1127: compiler->cache_argw = 0;
1128: /* cmp TMP_REG2, dst asr #31. */
1129: return push_inst(compiler, EMIT_DATA_PROCESS_INS(CMP_DP, SET_FLAGS, SLJIT_UNUSED, TMP_REG3, RM(dst) | 0xfc0));
1130:
1131: case SLJIT_AND:
1132: if (!(flags & INV_IMM))
1133: EMIT_DATA_PROCESS_INS_AND_RETURN(AND_DP);
1134: EMIT_DATA_PROCESS_INS_AND_RETURN(BIC_DP);
1135:
1136: case SLJIT_OR:
1137: SLJIT_ASSERT(!(flags & INV_IMM));
1138: EMIT_DATA_PROCESS_INS_AND_RETURN(ORR_DP);
1139:
1140: case SLJIT_XOR:
1141: SLJIT_ASSERT(!(flags & INV_IMM));
1142: EMIT_DATA_PROCESS_INS_AND_RETURN(EOR_DP);
1143:
1144: case SLJIT_SHL:
1145: EMIT_SHIFT_INS_AND_RETURN(0);
1146:
1147: case SLJIT_LSHR:
1148: EMIT_SHIFT_INS_AND_RETURN(1);
1149:
1150: case SLJIT_ASHR:
1151: EMIT_SHIFT_INS_AND_RETURN(2);
1152: }
1153: SLJIT_ASSERT_STOP();
1154: return SLJIT_SUCCESS;
1155: }
1156:
1157: #undef EMIT_DATA_PROCESS_INS_AND_RETURN
1158: #undef EMIT_FULL_DATA_PROCESS_INS_AND_RETURN
1159: #undef EMIT_SHIFT_INS_AND_RETURN
1160:
1161: /* Tests whether the immediate can be stored in the 12 bit imm field.
1162: Returns with 0 if not possible. */
1.1.1.4 ! misho 1163: static sljit_uw get_imm(sljit_uw imm)
1.1 misho 1164: {
1.1.1.4 ! misho 1165: sljit_si rol;
1.1 misho 1166:
1167: if (imm <= 0xff)
1168: return SRC2_IMM | imm;
1169:
1170: if (!(imm & 0xff000000)) {
1171: imm <<= 8;
1172: rol = 8;
1173: }
1174: else {
1175: imm = (imm << 24) | (imm >> 8);
1176: rol = 0;
1177: }
1178:
1179: if (!(imm & 0xff000000)) {
1180: imm <<= 8;
1181: rol += 4;
1182: }
1183:
1184: if (!(imm & 0xf0000000)) {
1185: imm <<= 4;
1186: rol += 2;
1187: }
1188:
1189: if (!(imm & 0xc0000000)) {
1190: imm <<= 2;
1191: rol += 1;
1192: }
1193:
1194: if (!(imm & 0x00ffffff))
1195: return SRC2_IMM | (imm >> 24) | (rol << 8);
1196: else
1197: return 0;
1198: }
1199:
1200: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1.1.1.4 ! misho 1201: static sljit_si generate_int(struct sljit_compiler *compiler, sljit_si reg, sljit_uw imm, sljit_si positive)
1.1 misho 1202: {
1203: sljit_uw mask;
1204: sljit_uw imm1;
1205: sljit_uw imm2;
1.1.1.4 ! misho 1206: sljit_si rol;
1.1 misho 1207:
1208: /* Step1: Search a zero byte (8 continous zero bit). */
1209: mask = 0xff000000;
1210: rol = 8;
1211: while(1) {
1212: if (!(imm & mask)) {
1213: /* Rol imm by rol. */
1214: imm = (imm << rol) | (imm >> (32 - rol));
1215: /* Calculate arm rol. */
1216: rol = 4 + (rol >> 1);
1217: break;
1218: }
1219: rol += 2;
1220: mask >>= 2;
1221: if (mask & 0x3) {
1222: /* rol by 8. */
1223: imm = (imm << 8) | (imm >> 24);
1224: mask = 0xff00;
1225: rol = 24;
1226: while (1) {
1227: if (!(imm & mask)) {
1228: /* Rol imm by rol. */
1229: imm = (imm << rol) | (imm >> (32 - rol));
1230: /* Calculate arm rol. */
1231: rol = (rol >> 1) - 8;
1232: break;
1233: }
1234: rol += 2;
1235: mask >>= 2;
1236: if (mask & 0x3)
1237: return 0;
1238: }
1239: break;
1240: }
1241: }
1242:
1243: /* The low 8 bit must be zero. */
1244: SLJIT_ASSERT(!(imm & 0xff));
1245:
1246: if (!(imm & 0xff000000)) {
1247: imm1 = SRC2_IMM | ((imm >> 16) & 0xff) | (((rol + 4) & 0xf) << 8);
1248: imm2 = SRC2_IMM | ((imm >> 8) & 0xff) | (((rol + 8) & 0xf) << 8);
1249: }
1250: else if (imm & 0xc0000000) {
1251: imm1 = SRC2_IMM | ((imm >> 24) & 0xff) | ((rol & 0xf) << 8);
1252: imm <<= 8;
1253: rol += 4;
1254:
1255: if (!(imm & 0xff000000)) {
1256: imm <<= 8;
1257: rol += 4;
1258: }
1259:
1260: if (!(imm & 0xf0000000)) {
1261: imm <<= 4;
1262: rol += 2;
1263: }
1264:
1265: if (!(imm & 0xc0000000)) {
1266: imm <<= 2;
1267: rol += 1;
1268: }
1269:
1270: if (!(imm & 0x00ffffff))
1271: imm2 = SRC2_IMM | (imm >> 24) | ((rol & 0xf) << 8);
1272: else
1273: return 0;
1274: }
1275: else {
1276: if (!(imm & 0xf0000000)) {
1277: imm <<= 4;
1278: rol += 2;
1279: }
1280:
1281: if (!(imm & 0xc0000000)) {
1282: imm <<= 2;
1283: rol += 1;
1284: }
1285:
1286: imm1 = SRC2_IMM | ((imm >> 24) & 0xff) | ((rol & 0xf) << 8);
1287: imm <<= 8;
1288: rol += 4;
1289:
1290: if (!(imm & 0xf0000000)) {
1291: imm <<= 4;
1292: rol += 2;
1293: }
1294:
1295: if (!(imm & 0xc0000000)) {
1296: imm <<= 2;
1297: rol += 1;
1298: }
1299:
1300: if (!(imm & 0x00ffffff))
1301: imm2 = SRC2_IMM | (imm >> 24) | ((rol & 0xf) << 8);
1302: else
1303: return 0;
1304: }
1305:
1306: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(positive ? MOV_DP : MVN_DP, 0, reg, SLJIT_UNUSED, imm1));
1307: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(positive ? ORR_DP : BIC_DP, 0, reg, reg, imm2));
1308: return 1;
1309: }
1310: #endif
1311:
1.1.1.4 ! misho 1312: static sljit_si load_immediate(struct sljit_compiler *compiler, sljit_si reg, sljit_uw imm)
1.1 misho 1313: {
1314: sljit_uw tmp;
1315:
1316: #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
1317: if (!(imm & ~0xffff))
1318: return push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | (imm & 0xfff));
1319: #endif
1320:
1321: /* Create imm by 1 inst. */
1.1.1.4 ! misho 1322: tmp = get_imm(imm);
1.1 misho 1323: if (tmp) {
1324: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, tmp));
1325: return SLJIT_SUCCESS;
1326: }
1327:
1.1.1.4 ! misho 1328: tmp = get_imm(~imm);
1.1 misho 1329: if (tmp) {
1330: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MVN_DP, 0, reg, SLJIT_UNUSED, tmp));
1331: return SLJIT_SUCCESS;
1332: }
1333:
1334: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1335: /* Create imm by 2 inst. */
1336: FAIL_IF(generate_int(compiler, reg, imm, 1));
1337: FAIL_IF(generate_int(compiler, reg, ~imm, 0));
1338:
1339: /* Load integer. */
1340: return push_inst_with_literal(compiler, EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0, reg, TMP_PC, 0), imm);
1341: #else
1342: return emit_imm(compiler, reg, imm);
1343: #endif
1344: }
1345:
1.1.1.4 ! misho 1346: /* Helper function. Dst should be reg + value, using at most 1 instruction, flags does not set. */
! 1347: static sljit_si emit_set_delta(struct sljit_compiler *compiler, sljit_si dst, sljit_si reg, sljit_sw value)
! 1348: {
! 1349: if (value >= 0) {
! 1350: value = get_imm(value);
! 1351: if (value)
! 1352: return push_inst(compiler, EMIT_DATA_PROCESS_INS(ADD_DP, 0, dst, reg, value));
! 1353: }
! 1354: else {
! 1355: value = get_imm(-value);
! 1356: if (value)
! 1357: return push_inst(compiler, EMIT_DATA_PROCESS_INS(SUB_DP, 0, dst, reg, value));
! 1358: }
! 1359: return SLJIT_ERR_UNSUPPORTED;
! 1360: }
! 1361:
1.1 misho 1362: /* Can perform an operation using at most 1 instruction. */
1.1.1.4 ! misho 1363: static sljit_si getput_arg_fast(struct sljit_compiler *compiler, sljit_si inp_flags, sljit_si reg, sljit_si arg, sljit_sw argw)
1.1 misho 1364: {
1365: sljit_uw imm;
1366:
1367: if (arg & SLJIT_IMM) {
1.1.1.4 ! misho 1368: imm = get_imm(argw);
1.1 misho 1369: if (imm) {
1370: if (inp_flags & ARG_TEST)
1371: return 1;
1372: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, imm));
1373: return -1;
1374: }
1.1.1.4 ! misho 1375: imm = get_imm(~argw);
1.1 misho 1376: if (imm) {
1377: if (inp_flags & ARG_TEST)
1378: return 1;
1379: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MVN_DP, 0, reg, SLJIT_UNUSED, imm));
1380: return -1;
1381: }
1382: return (inp_flags & ARG_TEST) ? SLJIT_SUCCESS : 0;
1383: }
1384:
1385: SLJIT_ASSERT(arg & SLJIT_MEM);
1386:
1387: /* Fast loads/stores. */
1388: if (arg & 0xf) {
1389: if (!(arg & 0xf0)) {
1390: if (IS_TYPE1_TRANSFER(inp_flags)) {
1391: if (argw >= 0 && argw <= 0xfff) {
1392: if (inp_flags & ARG_TEST)
1393: return 1;
1394: EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, argw));
1395: return -1;
1396: }
1397: if (argw < 0 && argw >= -0xfff) {
1398: if (inp_flags & ARG_TEST)
1399: return 1;
1400: EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 0, inp_flags & WRITE_BACK, reg, arg & 0xf, -argw));
1401: return -1;
1402: }
1403: }
1404: else {
1405: if (argw >= 0 && argw <= 0xff) {
1406: if (inp_flags & ARG_TEST)
1407: return 1;
1408: EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, TYPE2_TRANSFER_IMM(argw)));
1409: return -1;
1410: }
1411: if (argw < 0 && argw >= -0xff) {
1412: if (inp_flags & ARG_TEST)
1413: return 1;
1414: argw = -argw;
1415: EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 0, inp_flags & WRITE_BACK, reg, arg & 0xf, TYPE2_TRANSFER_IMM(argw)));
1416: return -1;
1417: }
1418: }
1419: }
1420: else if ((argw & 0x3) == 0 || IS_TYPE1_TRANSFER(inp_flags)) {
1421: if (inp_flags & ARG_TEST)
1422: return 1;
1423: EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf,
1424: RM((arg >> 4) & 0xf) | (IS_TYPE1_TRANSFER(inp_flags) ? SRC2_IMM : 0) | ((argw & 0x3) << 7)));
1425: return -1;
1426: }
1427: }
1428:
1429: return (inp_flags & ARG_TEST) ? SLJIT_SUCCESS : 0;
1430: }
1431:
1432: /* See getput_arg below.
1433: Note: can_cache is called only for binary operators. Those
1434: operators always uses word arguments without write back. */
1.1.1.4 ! misho 1435: static sljit_si can_cache(sljit_si arg, sljit_sw argw, sljit_si next_arg, sljit_sw next_argw)
1.1 misho 1436: {
1437: /* Immediate caching is not supported as it would be an operation on constant arguments. */
1438: if (arg & SLJIT_IMM)
1439: return 0;
1440:
1441: /* Always a simple operation. */
1442: if (arg & 0xf0)
1443: return 0;
1444:
1445: if (!(arg & 0xf)) {
1446: /* Immediate access. */
1447: if ((next_arg & SLJIT_MEM) && ((sljit_uw)argw - (sljit_uw)next_argw <= 0xfff || (sljit_uw)next_argw - (sljit_uw)argw <= 0xfff))
1448: return 1;
1449: return 0;
1450: }
1451:
1452: if (argw <= 0xfffff && argw >= -0xfffff)
1453: return 0;
1454:
1455: if (argw == next_argw && (next_arg & SLJIT_MEM))
1456: return 1;
1457:
1458: if (arg == next_arg && ((sljit_uw)argw - (sljit_uw)next_argw <= 0xfff || (sljit_uw)next_argw - (sljit_uw)argw <= 0xfff))
1459: return 1;
1460:
1461: return 0;
1462: }
1463:
1464: #define GETPUT_ARG_DATA_TRANSFER(add, wb, target, base, imm) \
1465: if (max_delta & 0xf00) \
1466: FAIL_IF(push_inst(compiler, EMIT_DATA_TRANSFER(inp_flags, add, wb, target, base, imm))); \
1467: else \
1468: FAIL_IF(push_inst(compiler, EMIT_DATA_TRANSFER(inp_flags, add, wb, target, base, TYPE2_TRANSFER_IMM(imm))));
1469:
1470: #define TEST_WRITE_BACK() \
1471: if (inp_flags & WRITE_BACK) { \
1472: tmp_r = arg & 0xf; \
1473: if (reg == tmp_r) { \
1474: /* This can only happen for stores */ \
1475: /* since ldr reg, [reg, ...]! has no meaning */ \
1476: SLJIT_ASSERT(!(inp_flags & LOAD_DATA)); \
1477: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(reg))); \
1478: reg = TMP_REG3; \
1479: } \
1480: }
1481:
1482: /* Emit the necessary instructions. See can_cache above. */
1.1.1.4 ! misho 1483: static sljit_si getput_arg(struct sljit_compiler *compiler, sljit_si inp_flags, sljit_si reg, sljit_si arg, sljit_sw argw, sljit_si next_arg, sljit_sw next_argw)
1.1 misho 1484: {
1.1.1.4 ! misho 1485: sljit_si tmp_r;
! 1486: sljit_sw max_delta;
! 1487: sljit_sw sign;
! 1488: sljit_uw imm;
1.1 misho 1489:
1490: if (arg & SLJIT_IMM) {
1491: SLJIT_ASSERT(inp_flags & LOAD_DATA);
1492: return load_immediate(compiler, reg, argw);
1493: }
1494:
1495: SLJIT_ASSERT(arg & SLJIT_MEM);
1496:
1497: tmp_r = (inp_flags & LOAD_DATA) ? reg : TMP_REG3;
1498: max_delta = IS_TYPE1_TRANSFER(inp_flags) ? 0xfff : 0xff;
1499:
1500: if ((arg & 0xf) == SLJIT_UNUSED) {
1501: /* Write back is not used. */
1.1.1.4 ! misho 1502: imm = (sljit_uw)(argw - compiler->cache_argw);
! 1503: if ((compiler->cache_arg & SLJIT_IMM) && (imm <= (sljit_uw)max_delta || imm >= (sljit_uw)-max_delta)) {
! 1504: if (imm <= (sljit_uw)max_delta) {
1.1 misho 1505: sign = 1;
1506: argw = argw - compiler->cache_argw;
1507: }
1508: else {
1509: sign = 0;
1510: argw = compiler->cache_argw - argw;
1511: }
1512:
1.1.1.4 ! misho 1513: GETPUT_ARG_DATA_TRANSFER(sign, 0, reg, TMP_REG3, argw);
1.1 misho 1514: return SLJIT_SUCCESS;
1515: }
1516:
1517: /* With write back, we can create some sophisticated loads, but
1518: it is hard to decide whether we should convert downward (0s) or upward (1s). */
1.1.1.4 ! misho 1519: imm = (sljit_uw)(argw - next_argw);
! 1520: if ((next_arg & SLJIT_MEM) && (imm <= (sljit_uw)max_delta || imm >= (sljit_uw)-max_delta)) {
1.1 misho 1521: SLJIT_ASSERT(inp_flags & LOAD_DATA);
1522:
1523: compiler->cache_arg = SLJIT_IMM;
1524: compiler->cache_argw = argw;
1525: tmp_r = TMP_REG3;
1526: }
1527:
1528: FAIL_IF(load_immediate(compiler, tmp_r, argw));
1529: GETPUT_ARG_DATA_TRANSFER(1, 0, reg, tmp_r, 0);
1530: return SLJIT_SUCCESS;
1531: }
1532:
1533: if (arg & 0xf0) {
1534: SLJIT_ASSERT((argw & 0x3) && !(max_delta & 0xf00));
1535: if (inp_flags & WRITE_BACK)
1536: tmp_r = arg & 0xf;
1537: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, tmp_r, arg & 0xf, RM((arg >> 4) & 0xf) | ((argw & 0x3) << 7)));
1538: EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, 0, reg, tmp_r, TYPE2_TRANSFER_IMM(0)));
1539: return SLJIT_SUCCESS;
1540: }
1541:
1.1.1.4 ! misho 1542: imm = (sljit_uw)(argw - compiler->cache_argw);
! 1543: if (compiler->cache_arg == arg && imm <= (sljit_uw)max_delta) {
1.1 misho 1544: SLJIT_ASSERT(!(inp_flags & WRITE_BACK));
1.1.1.4 ! misho 1545: GETPUT_ARG_DATA_TRANSFER(1, 0, reg, TMP_REG3, imm);
1.1 misho 1546: return SLJIT_SUCCESS;
1547: }
1.1.1.4 ! misho 1548: if (compiler->cache_arg == arg && imm >= (sljit_uw)-max_delta) {
1.1 misho 1549: SLJIT_ASSERT(!(inp_flags & WRITE_BACK));
1.1.1.4 ! misho 1550: imm = (sljit_uw)-(sljit_sw)imm;
! 1551: GETPUT_ARG_DATA_TRANSFER(0, 0, reg, TMP_REG3, imm);
! 1552: return SLJIT_SUCCESS;
! 1553: }
! 1554:
! 1555: imm = get_imm(argw & ~max_delta);
! 1556: if (imm) {
! 1557: TEST_WRITE_BACK();
! 1558: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, tmp_r, arg & 0xf, imm));
! 1559: GETPUT_ARG_DATA_TRANSFER(1, inp_flags & WRITE_BACK, reg, tmp_r, argw & max_delta);
! 1560: return SLJIT_SUCCESS;
! 1561: }
! 1562:
! 1563: imm = get_imm(-argw & ~max_delta);
! 1564: if (imm) {
! 1565: argw = -argw;
! 1566: TEST_WRITE_BACK();
! 1567: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(SUB_DP, 0, tmp_r, arg & 0xf, imm));
! 1568: GETPUT_ARG_DATA_TRANSFER(0, inp_flags & WRITE_BACK, reg, tmp_r, argw & max_delta);
1.1 misho 1569: return SLJIT_SUCCESS;
1570: }
1571:
1572: if ((compiler->cache_arg & SLJIT_IMM) && compiler->cache_argw == argw) {
1573: TEST_WRITE_BACK();
1574: EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, RM(TMP_REG3) | (max_delta & 0xf00 ? SRC2_IMM : 0)));
1575: return SLJIT_SUCCESS;
1576: }
1577:
1578: if (argw == next_argw && (next_arg & SLJIT_MEM)) {
1579: SLJIT_ASSERT(inp_flags & LOAD_DATA);
1580: FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1581:
1582: compiler->cache_arg = SLJIT_IMM;
1583: compiler->cache_argw = argw;
1584:
1585: TEST_WRITE_BACK();
1586: EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, RM(TMP_REG3) | (max_delta & 0xf00 ? SRC2_IMM : 0)));
1587: return SLJIT_SUCCESS;
1588: }
1589:
1.1.1.4 ! misho 1590: imm = (sljit_uw)(argw - next_argw);
! 1591: if (arg == next_arg && !(inp_flags & WRITE_BACK) && (imm <= (sljit_uw)max_delta || imm >= (sljit_uw)-max_delta)) {
1.1 misho 1592: SLJIT_ASSERT(inp_flags & LOAD_DATA);
1593: FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1594: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG3, TMP_REG3, reg_map[arg & 0xf]));
1595:
1596: compiler->cache_arg = arg;
1597: compiler->cache_argw = argw;
1598:
1599: GETPUT_ARG_DATA_TRANSFER(1, 0, reg, TMP_REG3, 0);
1600: return SLJIT_SUCCESS;
1601: }
1602:
1603: if ((arg & 0xf) == tmp_r) {
1604: compiler->cache_arg = SLJIT_IMM;
1605: compiler->cache_argw = argw;
1606: tmp_r = TMP_REG3;
1607: }
1608:
1609: FAIL_IF(load_immediate(compiler, tmp_r, argw));
1610: 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)));
1611: return SLJIT_SUCCESS;
1612: }
1613:
1.1.1.4 ! misho 1614: static SLJIT_INLINE sljit_si emit_op_mem(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg, sljit_si arg, sljit_sw argw)
! 1615: {
! 1616: if (getput_arg_fast(compiler, flags, reg, arg, argw))
! 1617: return compiler->error;
! 1618: compiler->cache_arg = 0;
! 1619: compiler->cache_argw = 0;
! 1620: return getput_arg(compiler, flags, reg, arg, argw, 0, 0);
! 1621: }
! 1622:
! 1623: static SLJIT_INLINE sljit_si emit_op_mem2(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg, sljit_si arg1, sljit_sw arg1w, sljit_si arg2, sljit_sw arg2w)
! 1624: {
! 1625: if (getput_arg_fast(compiler, flags, reg, arg1, arg1w))
! 1626: return compiler->error;
! 1627: return getput_arg(compiler, flags, reg, arg1, arg1w, arg2, arg2w);
! 1628: }
! 1629:
! 1630: static sljit_si emit_op(struct sljit_compiler *compiler, sljit_si op, sljit_si inp_flags,
! 1631: sljit_si dst, sljit_sw dstw,
! 1632: sljit_si src1, sljit_sw src1w,
! 1633: sljit_si src2, sljit_sw src2w)
1.1 misho 1634: {
1635: /* arg1 goes to TMP_REG1 or src reg
1636: arg2 goes to TMP_REG2, imm or src reg
1637: TMP_REG3 can be used for caching
1638: result goes to TMP_REG2, so put result can use TMP_REG1 and TMP_REG3. */
1639:
1640: /* We prefers register and simple consts. */
1.1.1.4 ! misho 1641: sljit_si dst_r;
! 1642: sljit_si src1_r;
! 1643: sljit_si src2_r = 0;
! 1644: sljit_si sugg_src2_r = TMP_REG2;
! 1645: sljit_si flags = GET_FLAGS(op) ? SET_FLAGS : 0;
1.1 misho 1646:
1647: compiler->cache_arg = 0;
1648: compiler->cache_argw = 0;
1649:
1650: /* Destination check. */
1.1.1.4 ! misho 1651: if (SLJIT_UNLIKELY(dst == SLJIT_UNUSED)) {
! 1652: if (op >= SLJIT_MOV && op <= SLJIT_MOVU_SI && !(src2 & SLJIT_MEM))
! 1653: return SLJIT_SUCCESS;
! 1654: dst_r = TMP_REG2;
! 1655: }
! 1656: else if (dst <= TMP_REG3) {
1.1 misho 1657: dst_r = dst;
1658: flags |= REG_DEST;
1659: if (op >= SLJIT_MOV && op <= SLJIT_MOVU_SI)
1660: sugg_src2_r = dst_r;
1661: }
1662: else {
1663: SLJIT_ASSERT(dst & SLJIT_MEM);
1664: if (getput_arg_fast(compiler, inp_flags | ARG_TEST, TMP_REG2, dst, dstw)) {
1665: flags |= FAST_DEST;
1666: dst_r = TMP_REG2;
1667: }
1668: else {
1669: flags |= SLOW_DEST;
1670: dst_r = 0;
1671: }
1672: }
1673:
1674: /* Source 1. */
1.1.1.4 ! misho 1675: if (src1 <= TMP_REG3)
1.1 misho 1676: src1_r = src1;
1.1.1.4 ! misho 1677: else if (src2 <= TMP_REG3) {
1.1 misho 1678: flags |= ARGS_SWAPPED;
1679: src1_r = src2;
1680: src2 = src1;
1681: src2w = src1w;
1682: }
1.1.1.3 misho 1683: else do { /* do { } while(0) is used because of breaks. */
1684: src1_r = 0;
1.1 misho 1685: if ((inp_flags & ALLOW_ANY_IMM) && (src1 & SLJIT_IMM)) {
1686: /* The second check will generate a hit. */
1.1.1.4 ! misho 1687: src2_r = get_imm(src1w);
1.1 misho 1688: if (src2_r) {
1689: flags |= ARGS_SWAPPED;
1690: src1 = src2;
1691: src1w = src2w;
1.1.1.3 misho 1692: break;
1.1 misho 1693: }
1694: if (inp_flags & ALLOW_INV_IMM) {
1.1.1.4 ! misho 1695: src2_r = get_imm(~src1w);
1.1 misho 1696: if (src2_r) {
1697: flags |= ARGS_SWAPPED | INV_IMM;
1698: src1 = src2;
1699: src1w = src2w;
1.1.1.3 misho 1700: break;
1701: }
1702: }
1703: if (GET_OPCODE(op) == SLJIT_ADD) {
1.1.1.4 ! misho 1704: src2_r = get_imm(-src1w);
1.1.1.3 misho 1705: if (src2_r) {
1706: /* Note: ARGS_SWAPPED is intentionally not applied! */
1707: src1 = src2;
1708: src1w = src2w;
1709: op = SLJIT_SUB | GET_ALL_FLAGS(op);
1710: break;
1.1 misho 1711: }
1712: }
1713: }
1714:
1715: if (getput_arg_fast(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w)) {
1716: FAIL_IF(compiler->error);
1717: src1_r = TMP_REG1;
1718: }
1.1.1.3 misho 1719: } while (0);
1.1 misho 1720:
1721: /* Source 2. */
1722: if (src2_r == 0) {
1.1.1.4 ! misho 1723: if (src2 <= TMP_REG3) {
1.1 misho 1724: src2_r = src2;
1725: flags |= REG_SOURCE;
1726: if (!(flags & REG_DEST) && op >= SLJIT_MOV && op <= SLJIT_MOVU_SI)
1727: dst_r = src2_r;
1728: }
1729: else do { /* do { } while(0) is used because of breaks. */
1730: if ((inp_flags & ALLOW_ANY_IMM) && (src2 & SLJIT_IMM)) {
1.1.1.4 ! misho 1731: src2_r = get_imm(src2w);
1.1 misho 1732: if (src2_r)
1733: break;
1734: if (inp_flags & ALLOW_INV_IMM) {
1.1.1.4 ! misho 1735: src2_r = get_imm(~src2w);
1.1 misho 1736: if (src2_r) {
1737: flags |= INV_IMM;
1738: break;
1739: }
1740: }
1.1.1.3 misho 1741: if (GET_OPCODE(op) == SLJIT_ADD) {
1.1.1.4 ! misho 1742: src2_r = get_imm(-src2w);
1.1.1.3 misho 1743: if (src2_r) {
1744: op = SLJIT_SUB | GET_ALL_FLAGS(op);
1745: flags &= ~ARGS_SWAPPED;
1746: break;
1747: }
1748: }
1749: if (GET_OPCODE(op) == SLJIT_SUB && !(flags & ARGS_SWAPPED)) {
1.1.1.4 ! misho 1750: src2_r = get_imm(-src2w);
1.1.1.3 misho 1751: if (src2_r) {
1752: op = SLJIT_ADD | GET_ALL_FLAGS(op);
1753: flags &= ~ARGS_SWAPPED;
1754: break;
1755: }
1756: }
1.1 misho 1757: }
1758:
1759: /* src2_r is 0. */
1760: if (getput_arg_fast(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w)) {
1761: FAIL_IF(compiler->error);
1762: src2_r = sugg_src2_r;
1763: }
1764: } while (0);
1765: }
1766:
1767: /* src1_r, src2_r and dst_r can be zero (=unprocessed) or non-zero.
1768: If they are zero, they must not be registers. */
1769: if (src1_r == 0 && src2_r == 0 && dst_r == 0) {
1770: if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
1771: SLJIT_ASSERT(!(flags & ARGS_SWAPPED));
1772: flags |= ARGS_SWAPPED;
1773: FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src2, src2w, src1, src1w));
1774: FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG2, src1, src1w, dst, dstw));
1775: }
1776: else {
1777: FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, src2, src2w));
1778: FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG2, src2, src2w, dst, dstw));
1779: }
1780: src1_r = TMP_REG1;
1781: src2_r = TMP_REG2;
1782: }
1783: else if (src1_r == 0 && src2_r == 0) {
1784: FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, src2, src2w));
1785: src1_r = TMP_REG1;
1786: }
1787: else if (src1_r == 0 && dst_r == 0) {
1788: FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, dst, dstw));
1789: src1_r = TMP_REG1;
1790: }
1791: else if (src2_r == 0 && dst_r == 0) {
1792: FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w, dst, dstw));
1793: src2_r = sugg_src2_r;
1794: }
1795:
1796: if (dst_r == 0)
1797: dst_r = TMP_REG2;
1798:
1799: if (src1_r == 0) {
1800: FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, 0, 0));
1801: src1_r = TMP_REG1;
1802: }
1803:
1804: if (src2_r == 0) {
1805: FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w, 0, 0));
1806: src2_r = sugg_src2_r;
1807: }
1808:
1809: FAIL_IF(emit_single_op(compiler, op, flags, dst_r, src1_r, src2_r));
1810:
1811: if (flags & (FAST_DEST | SLOW_DEST)) {
1812: if (flags & FAST_DEST)
1813: FAIL_IF(getput_arg_fast(compiler, inp_flags, dst_r, dst, dstw));
1814: else
1815: FAIL_IF(getput_arg(compiler, inp_flags, dst_r, dst, dstw, 0, 0));
1816: }
1817: return SLJIT_SUCCESS;
1818: }
1819:
1.1.1.2 misho 1820: #ifdef __cplusplus
1821: extern "C" {
1822: #endif
1823:
1824: #if defined(__GNUC__)
1.1.1.4 ! misho 1825: extern unsigned int __aeabi_uidivmod(unsigned int numerator, unsigned int denominator);
! 1826: extern int __aeabi_idivmod(int numerator, int denominator);
1.1.1.2 misho 1827: #else
1828: #error "Software divmod functions are needed"
1829: #endif
1830:
1831: #ifdef __cplusplus
1832: }
1833: #endif
1834:
1.1.1.4 ! misho 1835: SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op0(struct sljit_compiler *compiler, sljit_si op)
1.1 misho 1836: {
1837: CHECK_ERROR();
1838: check_sljit_emit_op0(compiler, op);
1839:
1840: op = GET_OPCODE(op);
1841: switch (op) {
1842: case SLJIT_BREAKPOINT:
1.1.1.2 misho 1843: EMIT_INSTRUCTION(BKPT);
1.1 misho 1844: break;
1845: case SLJIT_NOP:
1846: EMIT_INSTRUCTION(NOP);
1847: break;
1.1.1.2 misho 1848: case SLJIT_UMUL:
1849: case SLJIT_SMUL:
1850: #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
1851: return push_inst(compiler, (op == SLJIT_UMUL ? UMULL : SMULL)
1.1.1.4 ! misho 1852: | (reg_map[SLJIT_SCRATCH_REG2] << 16)
! 1853: | (reg_map[SLJIT_SCRATCH_REG1] << 12)
! 1854: | (reg_map[SLJIT_SCRATCH_REG1] << 8)
! 1855: | reg_map[SLJIT_SCRATCH_REG2]);
1.1.1.2 misho 1856: #else
1.1.1.4 ! misho 1857: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, RM(SLJIT_SCRATCH_REG2)));
1.1.1.2 misho 1858: return push_inst(compiler, (op == SLJIT_UMUL ? UMULL : SMULL)
1.1.1.4 ! misho 1859: | (reg_map[SLJIT_SCRATCH_REG2] << 16)
! 1860: | (reg_map[SLJIT_SCRATCH_REG1] << 12)
! 1861: | (reg_map[SLJIT_SCRATCH_REG1] << 8)
1.1.1.2 misho 1862: | reg_map[TMP_REG1]);
1863: #endif
1864: case SLJIT_UDIV:
1865: case SLJIT_SDIV:
1.1.1.4 ! misho 1866: if (compiler->scratches >= 3)
1.1.1.2 misho 1867: EMIT_INSTRUCTION(0xe52d2008 /* str r2, [sp, #-8]! */);
1868: #if defined(__GNUC__)
1869: FAIL_IF(sljit_emit_ijump(compiler, SLJIT_FAST_CALL, SLJIT_IMM,
1870: (op == SLJIT_UDIV ? SLJIT_FUNC_OFFSET(__aeabi_uidivmod) : SLJIT_FUNC_OFFSET(__aeabi_idivmod))));
1871: #else
1872: #error "Software divmod functions are needed"
1873: #endif
1.1.1.4 ! misho 1874: if (compiler->scratches >= 3)
1.1.1.2 misho 1875: return push_inst(compiler, 0xe49d2008 /* ldr r2, [sp], #8 */);
1876: return SLJIT_SUCCESS;
1.1 misho 1877: }
1878:
1879: return SLJIT_SUCCESS;
1880: }
1881:
1.1.1.4 ! misho 1882: SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op1(struct sljit_compiler *compiler, sljit_si op,
! 1883: sljit_si dst, sljit_sw dstw,
! 1884: sljit_si src, sljit_sw srcw)
1.1 misho 1885: {
1886: CHECK_ERROR();
1887: check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw);
1.1.1.3 misho 1888: ADJUST_LOCAL_OFFSET(dst, dstw);
1889: ADJUST_LOCAL_OFFSET(src, srcw);
1.1 misho 1890:
1891: switch (GET_OPCODE(op)) {
1892: case SLJIT_MOV:
1893: case SLJIT_MOV_UI:
1894: case SLJIT_MOV_SI:
1.1.1.4 ! misho 1895: case SLJIT_MOV_P:
1.1 misho 1896: return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, src, srcw);
1897:
1898: case SLJIT_MOV_UB:
1.1.1.4 ! misho 1899: return emit_op(compiler, SLJIT_MOV_UB, ALLOW_ANY_IMM | BYTE_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_ub)srcw : srcw);
1.1 misho 1900:
1901: case SLJIT_MOV_SB:
1.1.1.4 ! misho 1902: return emit_op(compiler, SLJIT_MOV_SB, ALLOW_ANY_IMM | SIGNED_DATA | BYTE_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_sb)srcw : srcw);
1.1 misho 1903:
1904: case SLJIT_MOV_UH:
1.1.1.4 ! misho 1905: return emit_op(compiler, SLJIT_MOV_UH, ALLOW_ANY_IMM | HALF_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_uh)srcw : srcw);
1.1 misho 1906:
1907: case SLJIT_MOV_SH:
1.1.1.4 ! misho 1908: return emit_op(compiler, SLJIT_MOV_SH, ALLOW_ANY_IMM | SIGNED_DATA | HALF_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_sh)srcw : srcw);
1.1 misho 1909:
1910: case SLJIT_MOVU:
1911: case SLJIT_MOVU_UI:
1912: case SLJIT_MOVU_SI:
1.1.1.4 ! misho 1913: case SLJIT_MOVU_P:
1.1 misho 1914: return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1915:
1916: case SLJIT_MOVU_UB:
1.1.1.4 ! misho 1917: return emit_op(compiler, SLJIT_MOV_UB, ALLOW_ANY_IMM | BYTE_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_ub)srcw : srcw);
1.1 misho 1918:
1919: case SLJIT_MOVU_SB:
1.1.1.4 ! misho 1920: 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) ? (sljit_sb)srcw : srcw);
1.1 misho 1921:
1922: case SLJIT_MOVU_UH:
1.1.1.4 ! misho 1923: return emit_op(compiler, SLJIT_MOV_UH, ALLOW_ANY_IMM | HALF_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_uh)srcw : srcw);
1.1 misho 1924:
1925: case SLJIT_MOVU_SH:
1.1.1.4 ! misho 1926: 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) ? (sljit_sh)srcw : srcw);
1.1 misho 1927:
1928: case SLJIT_NOT:
1929: return emit_op(compiler, op, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, src, srcw);
1930:
1931: case SLJIT_NEG:
1932: #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) || (defined SLJIT_DEBUG && SLJIT_DEBUG)
1933: compiler->skip_checks = 1;
1934: #endif
1.1.1.3 misho 1935: return sljit_emit_op2(compiler, SLJIT_SUB | GET_ALL_FLAGS(op), dst, dstw, SLJIT_IMM, 0, src, srcw);
1.1 misho 1936:
1937: case SLJIT_CLZ:
1938: return emit_op(compiler, op, 0, dst, dstw, TMP_REG1, 0, src, srcw);
1939: }
1940:
1941: return SLJIT_SUCCESS;
1942: }
1943:
1.1.1.4 ! misho 1944: SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op2(struct sljit_compiler *compiler, sljit_si op,
! 1945: sljit_si dst, sljit_sw dstw,
! 1946: sljit_si src1, sljit_sw src1w,
! 1947: sljit_si src2, sljit_sw src2w)
1.1 misho 1948: {
1949: CHECK_ERROR();
1950: check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w);
1.1.1.3 misho 1951: ADJUST_LOCAL_OFFSET(dst, dstw);
1952: ADJUST_LOCAL_OFFSET(src1, src1w);
1953: ADJUST_LOCAL_OFFSET(src2, src2w);
1.1 misho 1954:
1955: switch (GET_OPCODE(op)) {
1956: case SLJIT_ADD:
1957: case SLJIT_ADDC:
1958: case SLJIT_SUB:
1959: case SLJIT_SUBC:
1960: case SLJIT_OR:
1961: case SLJIT_XOR:
1962: return emit_op(compiler, op, ALLOW_IMM, dst, dstw, src1, src1w, src2, src2w);
1963:
1964: case SLJIT_MUL:
1965: return emit_op(compiler, op, 0, dst, dstw, src1, src1w, src2, src2w);
1966:
1967: case SLJIT_AND:
1968: return emit_op(compiler, op, ALLOW_ANY_IMM, dst, dstw, src1, src1w, src2, src2w);
1969:
1970: case SLJIT_SHL:
1971: case SLJIT_LSHR:
1972: case SLJIT_ASHR:
1973: if (src2 & SLJIT_IMM) {
1974: compiler->shift_imm = src2w & 0x1f;
1975: return emit_op(compiler, op, 0, dst, dstw, TMP_REG1, 0, src1, src1w);
1976: }
1977: else {
1978: compiler->shift_imm = 0x20;
1979: return emit_op(compiler, op, 0, dst, dstw, src1, src1w, src2, src2w);
1980: }
1981: }
1982:
1983: return SLJIT_SUCCESS;
1984: }
1985:
1.1.1.4 ! misho 1986: SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_get_register_index(sljit_si reg)
1.1.1.2 misho 1987: {
1988: check_sljit_get_register_index(reg);
1989: return reg_map[reg];
1990: }
1991:
1.1.1.4 ! misho 1992: SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_get_float_register_index(sljit_si reg)
! 1993: {
! 1994: check_sljit_get_float_register_index(reg);
! 1995: return reg;
! 1996: }
! 1997:
! 1998: SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op_custom(struct sljit_compiler *compiler,
! 1999: void *instruction, sljit_si size)
1.1.1.2 misho 2000: {
2001: CHECK_ERROR();
2002: check_sljit_emit_op_custom(compiler, instruction, size);
2003: SLJIT_ASSERT(size == 4);
2004:
2005: return push_inst(compiler, *(sljit_uw*)instruction);
2006: }
2007:
1.1 misho 2008: /* --------------------------------------------------------------------- */
2009: /* Floating point operators */
2010: /* --------------------------------------------------------------------- */
2011:
2012: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2013:
2014: /* 0 - no fpu
2015: 1 - vfp */
1.1.1.4 ! misho 2016: static sljit_si arm_fpu_type = -1;
1.1 misho 2017:
1.1.1.4 ! misho 2018: static void init_compiler(void)
1.1 misho 2019: {
2020: if (arm_fpu_type != -1)
2021: return;
2022:
2023: /* TODO: Only the OS can help to determine the correct fpu type. */
2024: arm_fpu_type = 1;
2025: }
2026:
1.1.1.4 ! misho 2027: SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_is_fpu_available(void)
1.1 misho 2028: {
2029: if (arm_fpu_type == -1)
2030: init_compiler();
2031: return arm_fpu_type;
2032: }
2033:
2034: #else
2035:
2036: #define arm_fpu_type 1
2037:
1.1.1.4 ! misho 2038: SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_is_fpu_available(void)
1.1 misho 2039: {
2040: /* Always available. */
2041: return 1;
2042: }
2043:
2044: #endif
2045:
1.1.1.4 ! misho 2046: #define FPU_LOAD (1 << 20)
! 2047: #define EMIT_FPU_DATA_TRANSFER(inst, add, base, freg, offs) \
! 2048: ((inst) | ((add) << 23) | (reg_map[base] << 16) | (freg << 12) | (offs))
! 2049: #define EMIT_FPU_OPERATION(opcode, mode, dst, src1, src2) \
! 2050: ((opcode) | (mode) | ((dst) << 12) | (src1) | ((src2) << 16))
1.1 misho 2051:
1.1.1.4 ! misho 2052: static sljit_si emit_fop_mem(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg, sljit_si arg, sljit_sw argw)
1.1 misho 2053: {
1.1.1.4 ! misho 2054: sljit_sw tmp;
! 2055: sljit_uw imm;
! 2056: sljit_sw inst = VSTR_F32 | (flags & (SLJIT_SINGLE_OP | FPU_LOAD));
1.1 misho 2057: SLJIT_ASSERT(arg & SLJIT_MEM);
2058:
1.1.1.4 ! misho 2059: if (SLJIT_UNLIKELY(arg & 0xf0)) {
! 2060: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG1, arg & 0xf, RM((arg >> 4) & 0xf) | ((argw & 0x3) << 7)));
! 2061: arg = SLJIT_MEM | TMP_REG1;
! 2062: argw = 0;
! 2063: }
! 2064:
1.1 misho 2065: /* Fast loads and stores. */
1.1.1.4 ! misho 2066: if ((arg & 0xf)) {
! 2067: if (!(argw & ~0x3fc))
! 2068: return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 1, arg & 0xf, reg, argw >> 2));
! 2069: if (!(-argw & ~0x3fc))
! 2070: return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 0, arg & 0xf, reg, (-argw) >> 2));
1.1 misho 2071: }
2072:
1.1.1.4 ! misho 2073: if (compiler->cache_arg == arg) {
! 2074: tmp = argw - compiler->cache_argw;
! 2075: if (!(tmp & ~0x3fc))
! 2076: return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 1, TMP_REG3, reg, tmp >> 2));
! 2077: if (!(-tmp & ~0x3fc))
! 2078: return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 0, TMP_REG3, reg, -tmp >> 2));
! 2079: if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, tmp) != SLJIT_ERR_UNSUPPORTED) {
! 2080: FAIL_IF(compiler->error);
! 2081: compiler->cache_argw = argw;
! 2082: return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 1, TMP_REG3, reg, 0));
! 2083: }
1.1 misho 2084: }
2085:
1.1.1.4 ! misho 2086: if (arg & 0xf) {
! 2087: if (emit_set_delta(compiler, TMP_REG1, arg & 0xf, argw) != SLJIT_ERR_UNSUPPORTED) {
! 2088: FAIL_IF(compiler->error);
! 2089: return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 1, TMP_REG1, reg, 0));
1.1 misho 2090: }
1.1.1.4 ! misho 2091: imm = get_imm(argw & ~0x3fc);
! 2092: if (imm) {
! 2093: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG1, arg & 0xf, imm));
! 2094: return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 1, TMP_REG1, reg, (argw & 0x3fc) >> 2));
! 2095: }
! 2096: imm = get_imm(-argw & ~0x3fc);
! 2097: if (imm) {
! 2098: argw = -argw;
! 2099: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(SUB_DP, 0, TMP_REG1, arg & 0xf, imm));
! 2100: return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 0, TMP_REG1, reg, (argw & 0x3fc) >> 2));
1.1 misho 2101: }
2102: }
2103:
2104: compiler->cache_arg = arg;
2105: compiler->cache_argw = argw;
2106: if (arg & 0xf) {
2107: FAIL_IF(load_immediate(compiler, TMP_REG1, argw));
2108: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG3, arg & 0xf, reg_map[TMP_REG1]));
2109: }
2110: else
2111: FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
2112:
1.1.1.4 ! misho 2113: return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 1, TMP_REG3, reg, 0));
1.1 misho 2114: }
2115:
1.1.1.4 ! misho 2116: SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fop1(struct sljit_compiler *compiler, sljit_si op,
! 2117: sljit_si dst, sljit_sw dstw,
! 2118: sljit_si src, sljit_sw srcw)
1.1 misho 2119: {
1.1.1.4 ! misho 2120: sljit_si dst_fr;
1.1 misho 2121:
2122: CHECK_ERROR();
2123: check_sljit_emit_fop1(compiler, op, dst, dstw, src, srcw);
1.1.1.4 ! misho 2124: SLJIT_COMPILE_ASSERT((SLJIT_SINGLE_OP == 0x100), float_transfer_bit_error);
1.1 misho 2125:
2126: compiler->cache_arg = 0;
2127: compiler->cache_argw = 0;
1.1.1.4 ! misho 2128: op ^= SLJIT_SINGLE_OP;
1.1 misho 2129:
1.1.1.4 ! misho 2130: if (GET_OPCODE(op) == SLJIT_CMPD) {
! 2131: if (dst > SLJIT_FLOAT_REG6) {
! 2132: FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, TMP_FREG1, dst, dstw));
1.1 misho 2133: dst = TMP_FREG1;
2134: }
1.1.1.4 ! misho 2135: if (src > SLJIT_FLOAT_REG6) {
! 2136: FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, TMP_FREG2, src, srcw));
1.1 misho 2137: src = TMP_FREG2;
2138: }
1.1.1.4 ! misho 2139: EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VCMP_F32, op & SLJIT_SINGLE_OP, dst, src, 0));
1.1 misho 2140: EMIT_INSTRUCTION(VMRS);
2141: return SLJIT_SUCCESS;
2142: }
2143:
1.1.1.4 ! misho 2144: dst_fr = (dst > SLJIT_FLOAT_REG6) ? TMP_FREG1 : dst;
1.1 misho 2145:
1.1.1.4 ! misho 2146: if (src > SLJIT_FLOAT_REG6) {
! 2147: FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, dst_fr, src, srcw));
! 2148: src = dst_fr;
1.1 misho 2149: }
2150:
1.1.1.4 ! misho 2151: switch (GET_OPCODE(op)) {
! 2152: case SLJIT_MOVD:
! 2153: if (src != dst_fr && dst_fr != TMP_FREG1)
! 2154: EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VMOV_F32, op & SLJIT_SINGLE_OP, dst_fr, src, 0));
1.1 misho 2155: break;
1.1.1.4 ! misho 2156: case SLJIT_NEGD:
! 2157: EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VNEG_F32, op & SLJIT_SINGLE_OP, dst_fr, src, 0));
1.1 misho 2158: break;
1.1.1.4 ! misho 2159: case SLJIT_ABSD:
! 2160: EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VABS_F32, op & SLJIT_SINGLE_OP, dst_fr, src, 0));
1.1 misho 2161: break;
2162: }
2163:
1.1.1.4 ! misho 2164: if (dst_fr == TMP_FREG1) {
! 2165: if (GET_OPCODE(op) == SLJIT_MOVD)
! 2166: dst_fr = src;
! 2167: FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP), dst_fr, dst, dstw));
! 2168: }
1.1 misho 2169:
2170: return SLJIT_SUCCESS;
2171: }
2172:
1.1.1.4 ! misho 2173: SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fop2(struct sljit_compiler *compiler, sljit_si op,
! 2174: sljit_si dst, sljit_sw dstw,
! 2175: sljit_si src1, sljit_sw src1w,
! 2176: sljit_si src2, sljit_sw src2w)
1.1 misho 2177: {
1.1.1.4 ! misho 2178: sljit_si dst_fr;
1.1 misho 2179:
2180: CHECK_ERROR();
2181: check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w);
2182:
2183: compiler->cache_arg = 0;
2184: compiler->cache_argw = 0;
1.1.1.4 ! misho 2185: op ^= SLJIT_SINGLE_OP;
1.1 misho 2186:
1.1.1.4 ! misho 2187: dst_fr = (dst > SLJIT_FLOAT_REG6) ? TMP_FREG1 : dst;
1.1 misho 2188:
1.1.1.4 ! misho 2189: if (src2 > SLJIT_FLOAT_REG6) {
! 2190: FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, TMP_FREG2, src2, src2w));
1.1 misho 2191: src2 = TMP_FREG2;
2192: }
2193:
1.1.1.4 ! misho 2194: if (src1 > SLJIT_FLOAT_REG6) {
! 2195: FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, TMP_FREG1, src1, src1w));
1.1 misho 2196: src1 = TMP_FREG1;
2197: }
2198:
1.1.1.4 ! misho 2199: switch (GET_OPCODE(op)) {
! 2200: case SLJIT_ADDD:
! 2201: EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VADD_F32, op & SLJIT_SINGLE_OP, dst_fr, src2, src1));
1.1 misho 2202: break;
2203:
1.1.1.4 ! misho 2204: case SLJIT_SUBD:
! 2205: EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VSUB_F32, op & SLJIT_SINGLE_OP, dst_fr, src2, src1));
1.1 misho 2206: break;
2207:
1.1.1.4 ! misho 2208: case SLJIT_MULD:
! 2209: EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VMUL_F32, op & SLJIT_SINGLE_OP, dst_fr, src2, src1));
1.1 misho 2210: break;
2211:
1.1.1.4 ! misho 2212: case SLJIT_DIVD:
! 2213: EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VDIV_F32, op & SLJIT_SINGLE_OP, dst_fr, src2, src1));
1.1 misho 2214: break;
2215: }
2216:
1.1.1.4 ! misho 2217: if (dst_fr == TMP_FREG1)
! 2218: FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP), TMP_FREG1, dst, dstw));
1.1 misho 2219:
2220: return SLJIT_SUCCESS;
2221: }
2222:
1.1.1.4 ! misho 2223: #undef FPU_LOAD
! 2224: #undef EMIT_FPU_DATA_TRANSFER
! 2225: #undef EMIT_FPU_OPERATION
! 2226:
1.1 misho 2227: /* --------------------------------------------------------------------- */
2228: /* Other instructions */
2229: /* --------------------------------------------------------------------- */
2230:
1.1.1.4 ! misho 2231: SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_si dst, sljit_sw dstw)
1.1 misho 2232: {
2233: CHECK_ERROR();
1.1.1.3 misho 2234: check_sljit_emit_fast_enter(compiler, dst, dstw);
2235: ADJUST_LOCAL_OFFSET(dst, dstw);
1.1 misho 2236:
1.1.1.4 ! misho 2237: /* For UNUSED dst. Uncommon, but possible. */
! 2238: if (dst == SLJIT_UNUSED)
! 2239: return SLJIT_SUCCESS;
! 2240:
! 2241: if (dst <= TMP_REG3)
1.1 misho 2242: return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, RM(TMP_REG3)));
2243:
1.1.1.4 ! misho 2244: /* Memory. */
! 2245: if (getput_arg_fast(compiler, WORD_DATA, TMP_REG3, dst, dstw))
! 2246: return compiler->error;
! 2247: /* TMP_REG3 is used for caching. */
! 2248: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG2, SLJIT_UNUSED, RM(TMP_REG3)));
! 2249: compiler->cache_arg = 0;
! 2250: compiler->cache_argw = 0;
! 2251: return getput_arg(compiler, WORD_DATA, TMP_REG2, dst, dstw, 0, 0);
1.1 misho 2252: }
2253:
1.1.1.4 ! misho 2254: SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fast_return(struct sljit_compiler *compiler, sljit_si src, sljit_sw srcw)
1.1 misho 2255: {
2256: CHECK_ERROR();
2257: check_sljit_emit_fast_return(compiler, src, srcw);
1.1.1.3 misho 2258: ADJUST_LOCAL_OFFSET(src, srcw);
1.1 misho 2259:
1.1.1.4 ! misho 2260: if (src <= TMP_REG3)
1.1 misho 2261: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(src)));
2262: else if (src & SLJIT_MEM) {
2263: if (getput_arg_fast(compiler, WORD_DATA | LOAD_DATA, TMP_REG3, src, srcw))
2264: FAIL_IF(compiler->error);
2265: else {
2266: compiler->cache_arg = 0;
2267: compiler->cache_argw = 0;
2268: FAIL_IF(getput_arg(compiler, WORD_DATA | LOAD_DATA, TMP_REG2, src, srcw, 0, 0));
2269: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(TMP_REG2)));
2270: }
2271: }
2272: else if (src & SLJIT_IMM)
2273: FAIL_IF(load_immediate(compiler, TMP_REG3, srcw));
2274: return push_inst(compiler, BLX | RM(TMP_REG3));
2275: }
2276:
2277: /* --------------------------------------------------------------------- */
2278: /* Conditional instructions */
2279: /* --------------------------------------------------------------------- */
2280:
1.1.1.4 ! misho 2281: static sljit_uw get_cc(sljit_si type)
1.1 misho 2282: {
2283: switch (type) {
2284: case SLJIT_C_EQUAL:
2285: case SLJIT_C_MUL_NOT_OVERFLOW:
2286: case SLJIT_C_FLOAT_EQUAL:
2287: return 0x00000000;
2288:
2289: case SLJIT_C_NOT_EQUAL:
2290: case SLJIT_C_MUL_OVERFLOW:
2291: case SLJIT_C_FLOAT_NOT_EQUAL:
2292: return 0x10000000;
2293:
2294: case SLJIT_C_LESS:
2295: case SLJIT_C_FLOAT_LESS:
2296: return 0x30000000;
2297:
2298: case SLJIT_C_GREATER_EQUAL:
2299: case SLJIT_C_FLOAT_GREATER_EQUAL:
2300: return 0x20000000;
2301:
2302: case SLJIT_C_GREATER:
2303: case SLJIT_C_FLOAT_GREATER:
2304: return 0x80000000;
2305:
2306: case SLJIT_C_LESS_EQUAL:
2307: case SLJIT_C_FLOAT_LESS_EQUAL:
2308: return 0x90000000;
2309:
2310: case SLJIT_C_SIG_LESS:
2311: return 0xb0000000;
2312:
2313: case SLJIT_C_SIG_GREATER_EQUAL:
2314: return 0xa0000000;
2315:
2316: case SLJIT_C_SIG_GREATER:
2317: return 0xc0000000;
2318:
2319: case SLJIT_C_SIG_LESS_EQUAL:
2320: return 0xd0000000;
2321:
2322: case SLJIT_C_OVERFLOW:
1.1.1.4 ! misho 2323: case SLJIT_C_FLOAT_UNORDERED:
1.1 misho 2324: return 0x60000000;
2325:
2326: case SLJIT_C_NOT_OVERFLOW:
1.1.1.4 ! misho 2327: case SLJIT_C_FLOAT_ORDERED:
1.1 misho 2328: return 0x70000000;
2329:
2330: default: /* SLJIT_JUMP */
2331: return 0xe0000000;
2332: }
2333: }
2334:
2335: SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler)
2336: {
2337: struct sljit_label *label;
2338:
2339: CHECK_ERROR_PTR();
2340: check_sljit_emit_label(compiler);
2341:
2342: if (compiler->last_label && compiler->last_label->size == compiler->size)
2343: return compiler->last_label;
2344:
2345: label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label));
2346: PTR_FAIL_IF(!label);
2347: set_label(label, compiler);
2348: return label;
2349: }
2350:
1.1.1.4 ! misho 2351: SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, sljit_si type)
1.1 misho 2352: {
2353: struct sljit_jump *jump;
2354:
2355: CHECK_ERROR_PTR();
2356: check_sljit_emit_jump(compiler, type);
2357:
2358: jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
2359: PTR_FAIL_IF(!jump);
2360: set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
2361: type &= 0xff;
2362:
2363: /* In ARM, we don't need to touch the arguments. */
2364: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2365: if (type >= SLJIT_FAST_CALL)
2366: PTR_FAIL_IF(prepare_blx(compiler));
2367: PTR_FAIL_IF(push_inst_with_unique_literal(compiler, ((EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0,
2368: type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, TMP_PC, 0)) & ~COND_MASK) | get_cc(type), 0));
2369:
2370: if (jump->flags & SLJIT_REWRITABLE_JUMP) {
2371: jump->addr = compiler->size;
2372: compiler->patches++;
2373: }
2374:
2375: if (type >= SLJIT_FAST_CALL) {
2376: jump->flags |= IS_BL;
2377: PTR_FAIL_IF(emit_blx(compiler));
2378: }
2379:
2380: if (!(jump->flags & SLJIT_REWRITABLE_JUMP))
2381: jump->addr = compiler->size;
2382: #else
2383: if (type >= SLJIT_FAST_CALL)
2384: jump->flags |= IS_BL;
2385: PTR_FAIL_IF(emit_imm(compiler, TMP_REG1, 0));
2386: PTR_FAIL_IF(push_inst(compiler, (((type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1)) & ~COND_MASK) | get_cc(type)));
2387: jump->addr = compiler->size;
2388: #endif
2389: return jump;
2390: }
2391:
1.1.1.4 ! misho 2392: SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_ijump(struct sljit_compiler *compiler, sljit_si type, sljit_si src, sljit_sw srcw)
1.1 misho 2393: {
2394: struct sljit_jump *jump;
2395:
2396: CHECK_ERROR();
2397: check_sljit_emit_ijump(compiler, type, src, srcw);
1.1.1.3 misho 2398: ADJUST_LOCAL_OFFSET(src, srcw);
1.1 misho 2399:
2400: /* In ARM, we don't need to touch the arguments. */
2401: if (src & SLJIT_IMM) {
2402: jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
2403: FAIL_IF(!jump);
2404: set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_BL : 0));
2405: jump->u.target = srcw;
2406:
2407: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2408: if (type >= SLJIT_FAST_CALL)
2409: FAIL_IF(prepare_blx(compiler));
2410: 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));
2411: if (type >= SLJIT_FAST_CALL)
2412: FAIL_IF(emit_blx(compiler));
2413: #else
2414: FAIL_IF(emit_imm(compiler, TMP_REG1, 0));
2415: FAIL_IF(push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1)));
2416: #endif
2417: jump->addr = compiler->size;
2418: }
2419: else {
1.1.1.4 ! misho 2420: if (src <= TMP_REG3)
1.1 misho 2421: return push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(src));
2422:
2423: SLJIT_ASSERT(src & SLJIT_MEM);
1.1.1.4 ! misho 2424: FAIL_IF(emit_op_mem(compiler, WORD_DATA | LOAD_DATA, TMP_REG2, src, srcw));
1.1 misho 2425: return push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG2));
2426: }
2427:
2428: return SLJIT_SUCCESS;
2429: }
2430:
1.1.1.4 ! misho 2431: SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op_flags(struct sljit_compiler *compiler, sljit_si op,
! 2432: sljit_si dst, sljit_sw dstw,
! 2433: sljit_si src, sljit_sw srcw,
! 2434: sljit_si type)
1.1 misho 2435: {
1.1.1.4 ! misho 2436: sljit_si dst_r, flags = GET_ALL_FLAGS(op);
! 2437: sljit_uw cc, ins;
1.1 misho 2438:
2439: CHECK_ERROR();
1.1.1.4 ! misho 2440: check_sljit_emit_op_flags(compiler, op, dst, dstw, src, srcw, type);
1.1.1.3 misho 2441: ADJUST_LOCAL_OFFSET(dst, dstw);
1.1.1.4 ! misho 2442: ADJUST_LOCAL_OFFSET(src, srcw);
1.1 misho 2443:
2444: if (dst == SLJIT_UNUSED)
2445: return SLJIT_SUCCESS;
2446:
1.1.1.4 ! misho 2447: op = GET_OPCODE(op);
1.1 misho 2448: cc = get_cc(type);
1.1.1.4 ! misho 2449: dst_r = (dst <= TMP_REG3) ? dst : TMP_REG2;
1.1 misho 2450:
1.1.1.4 ! misho 2451: if (op < SLJIT_ADD) {
! 2452: EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst_r, SLJIT_UNUSED, SRC2_IMM | 0));
! 2453: EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst_r, SLJIT_UNUSED, SRC2_IMM | 1) & ~COND_MASK) | cc);
! 2454: return (dst_r == TMP_REG2) ? emit_op_mem(compiler, WORD_DATA, TMP_REG2, dst, dstw) : SLJIT_SUCCESS;
1.1 misho 2455: }
2456:
1.1.1.4 ! misho 2457: ins = (op == SLJIT_AND ? AND_DP : (op == SLJIT_OR ? ORR_DP : EOR_DP));
! 2458: if ((op == SLJIT_OR || op == SLJIT_XOR) && dst <= TMP_REG3 && dst == src) {
! 2459: EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(ins, 0, dst, dst, SRC2_IMM | 1) & ~COND_MASK) | cc);
! 2460: /* The condition must always be set, even if the ORR/EOR is not executed above. */
! 2461: return (flags & SLJIT_SET_E) ? push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, SET_FLAGS, TMP_REG1, SLJIT_UNUSED, RM(dst))) : SLJIT_SUCCESS;
! 2462: }
1.1 misho 2463:
1.1.1.4 ! misho 2464: compiler->cache_arg = 0;
! 2465: compiler->cache_argw = 0;
! 2466: if (src & SLJIT_MEM) {
! 2467: FAIL_IF(emit_op_mem2(compiler, WORD_DATA | LOAD_DATA, TMP_REG1, src, srcw, dst, dstw));
! 2468: src = TMP_REG1;
! 2469: srcw = 0;
! 2470: } else if (src & SLJIT_IMM) {
! 2471: FAIL_IF(load_immediate(compiler, TMP_REG1, srcw));
! 2472: src = TMP_REG1;
! 2473: srcw = 0;
! 2474: }
1.1 misho 2475:
1.1.1.4 ! misho 2476: EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(ins, 0, dst_r, src, SRC2_IMM | 1) & ~COND_MASK) | cc);
! 2477: EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(ins, 0, dst_r, src, SRC2_IMM | 0) & ~COND_MASK) | (cc ^ 0x10000000));
! 2478: if (dst_r == TMP_REG2)
! 2479: FAIL_IF(emit_op_mem2(compiler, WORD_DATA, TMP_REG2, dst, dstw, 0, 0));
! 2480:
! 2481: return (flags & SLJIT_SET_E) ? push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, SET_FLAGS, TMP_REG1, SLJIT_UNUSED, RM(dst_r))) : SLJIT_SUCCESS;
1.1 misho 2482: }
2483:
1.1.1.4 ! misho 2484: SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, sljit_si dst, sljit_sw dstw, sljit_sw init_value)
1.1 misho 2485: {
2486: struct sljit_const *const_;
1.1.1.4 ! misho 2487: sljit_si reg;
1.1 misho 2488:
2489: CHECK_ERROR_PTR();
2490: check_sljit_emit_const(compiler, dst, dstw, init_value);
1.1.1.3 misho 2491: ADJUST_LOCAL_OFFSET(dst, dstw);
1.1 misho 2492:
2493: const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const));
2494: PTR_FAIL_IF(!const_);
2495:
1.1.1.4 ! misho 2496: reg = (dst <= TMP_REG3) ? dst : TMP_REG2;
1.1 misho 2497:
2498: #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2499: PTR_FAIL_IF(push_inst_with_unique_literal(compiler, EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0, reg, TMP_PC, 0), init_value));
2500: compiler->patches++;
2501: #else
2502: PTR_FAIL_IF(emit_imm(compiler, reg, init_value));
2503: #endif
2504: set_const(const_, compiler);
2505:
2506: if (reg == TMP_REG2 && dst != SLJIT_UNUSED)
1.1.1.4 ! misho 2507: PTR_FAIL_IF(emit_op_mem(compiler, WORD_DATA, TMP_REG2, dst, dstw));
1.1 misho 2508: return const_;
2509: }
2510:
2511: SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr)
2512: {
2513: inline_set_jump_addr(addr, new_addr, 1);
2514: }
2515:
1.1.1.4 ! misho 2516: SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant)
1.1 misho 2517: {
2518: inline_set_const(addr, new_constant, 1);
2519: }
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