/[pcre]/code/trunk/sljit/sljitNativeARM_v5.c
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Contents of /code/trunk/sljit/sljitNativeARM_v5.c

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Revision 777 - (hide annotations) (download)
Thu Dec 1 15:15:31 2011 UTC (2 years, 4 months ago) by zherczeg
File MIME type: text/plain
File size: 71837 byte(s)
Retrieve executable code size support for the JIT compiler and fixing some warnings.
1 ph10 662 /*
2     * Stack-less Just-In-Time compiler
3     *
4     * Copyright 2009-2010 Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
5     *
6     * Redistribution and use in source and binary forms, with or without modification, are
7     * permitted provided that the following conditions are met:
8     *
9     * 1. Redistributions of source code must retain the above copyright notice, this list of
10     * conditions and the following disclaimer.
11     *
12     * 2. Redistributions in binary form must reproduce the above copyright notice, this list
13     * of conditions and the following disclaimer in the documentation and/or other materials
14     * provided with the distribution.
15     *
16     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
17     * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
19     * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
21     * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
22     * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23     * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
24     * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25     */
26    
27 zherczeg 740 SLJIT_API_FUNC_ATTRIBUTE SLJIT_CONST char* sljit_get_platform_name()
28 ph10 662 {
29     #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
30     return "arm-v7";
31     #elif (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
32     return "arm-v5";
33     #else
34     #error "Internal error: Unknown ARM architecture"
35     #endif
36     }
37    
38     /* Last register + 1. */
39     #define TMP_REG1 (SLJIT_NO_REGISTERS + 1)
40     #define TMP_REG2 (SLJIT_NO_REGISTERS + 2)
41     #define TMP_REG3 (SLJIT_NO_REGISTERS + 3)
42     #define TMP_PC (SLJIT_NO_REGISTERS + 4)
43    
44     #define TMP_FREG1 (SLJIT_FLOAT_REG4 + 1)
45     #define TMP_FREG2 (SLJIT_FLOAT_REG4 + 2)
46    
47     /* In ARM instruction words.
48     Cache lines are usually 32 byte aligned. */
49     #define CONST_POOL_ALIGNMENT 8
50     #define CONST_POOL_EMPTY 0xffffffff
51    
52     #define ALIGN_INSTRUCTION(ptr) \
53     (sljit_uw*)(((sljit_uw)(ptr) + (CONST_POOL_ALIGNMENT * sizeof(sljit_uw)) - 1) & ~((CONST_POOL_ALIGNMENT * sizeof(sljit_uw)) - 1))
54     #define MAX_DIFFERENCE(max_diff) \
55     (((max_diff) / (int)sizeof(sljit_uw)) - (CONST_POOL_ALIGNMENT - 1))
56    
57     /* See sljit_emit_enter if you want to change them. */
58     static SLJIT_CONST sljit_ub reg_map[SLJIT_NO_REGISTERS + 5] = {
59     0, 0, 1, 2, 10, 11, 4, 5, 6, 7, 8, 13, 3, 12, 14, 15
60     };
61    
62     #define RM(rm) (reg_map[rm])
63     #define RD(rd) (reg_map[rd] << 12)
64     #define RN(rn) (reg_map[rn] << 16)
65    
66     /* --------------------------------------------------------------------- */
67     /* Instrucion forms */
68     /* --------------------------------------------------------------------- */
69    
70     /* The instruction includes the AL condition.
71     INST_NAME - CONDITIONAL remove this flag. */
72     #define COND_MASK 0xf0000000
73     #define CONDITIONAL 0xe0000000
74     #define PUSH_POOL 0xff000000
75    
76     /* DP - Data Processing instruction (use with EMIT_DATA_PROCESS_INS). */
77     #define ADC_DP 0x5
78     #define ADD_DP 0x4
79     #define AND_DP 0x0
80     #define B 0xea000000
81     #define BIC_DP 0xe
82     #define BL 0xeb000000
83     #define BLX 0xe12fff30
84     #define BX 0xe12fff10
85     #define CLZ 0xe16f0f10
86     #define CMP_DP 0xa
87     #define DEBUGGER 0xe1200070
88     #define EOR_DP 0x1
89     #define MOV_DP 0xd
90     #define MUL 0xe0000090
91     #define MVN_DP 0xf
92     #define NOP 0xe1a00000
93     #define ORR_DP 0xc
94     #define PUSH 0xe92d0000
95     #define POP 0xe8bd0000
96     #define RSB_DP 0x3
97     #define RSC_DP 0x7
98     #define SBC_DP 0x6
99     #define SMULL 0xe0c00090
100     #define SUB_DP 0x2
101     #define VABS_F64 0xeeb00bc0
102     #define VADD_F64 0xee300b00
103     #define VCMP_F64 0xeeb40b40
104     #define VDIV_F64 0xee800b00
105     #define VMOV_F64 0xeeb00b40
106     #define VMRS 0xeef1fa10
107     #define VMUL_F64 0xee200b00
108     #define VNEG_F64 0xeeb10b40
109     #define VSTR 0xed000b00
110     #define VSUB_F64 0xee300b40
111    
112     #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
113     /* Arm v7 specific instructions. */
114     #define MOVW 0xe3000000
115     #define MOVT 0xe3400000
116     #define SXTB 0xe6af0070
117     #define SXTH 0xe6bf0070
118     #define UXTB 0xe6ef0070
119     #define UXTH 0xe6ff0070
120     #endif
121    
122     #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
123    
124     static int push_cpool(struct sljit_compiler *compiler)
125     {
126     /* Pushing the constant pool into the instruction stream. */
127     sljit_uw* inst;
128     sljit_uw* cpool_ptr;
129     sljit_uw* cpool_end;
130     int i;
131    
132     /* The label could point the address after the constant pool. */
133     if (compiler->last_label && compiler->last_label->size == compiler->size)
134     compiler->last_label->size += compiler->cpool_fill + (CONST_POOL_ALIGNMENT - 1) + 1;
135    
136     SLJIT_ASSERT(compiler->cpool_fill > 0 && compiler->cpool_fill <= CPOOL_SIZE);
137     inst = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
138     FAIL_IF(!inst);
139     compiler->size++;
140     *inst = 0xff000000 | compiler->cpool_fill;
141    
142     for (i = 0; i < CONST_POOL_ALIGNMENT - 1; i++) {
143     inst = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
144     FAIL_IF(!inst);
145     compiler->size++;
146     *inst = 0;
147     }
148    
149     cpool_ptr = compiler->cpool;
150     cpool_end = cpool_ptr + compiler->cpool_fill;
151     while (cpool_ptr < cpool_end) {
152     inst = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
153     FAIL_IF(!inst);
154     compiler->size++;
155     *inst = *cpool_ptr++;
156     }
157     compiler->cpool_diff = CONST_POOL_EMPTY;
158     compiler->cpool_fill = 0;
159     return SLJIT_SUCCESS;
160     }
161    
162     static int push_inst(struct sljit_compiler *compiler, sljit_uw inst)
163     {
164     sljit_uw* ptr;
165    
166     if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092)))
167     FAIL_IF(push_cpool(compiler));
168    
169     ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
170     FAIL_IF(!ptr);
171     compiler->size++;
172     *ptr = inst;
173     return SLJIT_SUCCESS;
174     }
175    
176     static int push_inst_with_literal(struct sljit_compiler *compiler, sljit_uw inst, sljit_uw literal)
177     {
178     sljit_uw* ptr;
179     sljit_uw cpool_index = CPOOL_SIZE;
180     sljit_uw* cpool_ptr;
181     sljit_uw* cpool_end;
182     sljit_ub* cpool_unique_ptr;
183    
184     if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092)))
185     FAIL_IF(push_cpool(compiler));
186     else if (compiler->cpool_fill > 0) {
187     cpool_ptr = compiler->cpool;
188     cpool_end = cpool_ptr + compiler->cpool_fill;
189     cpool_unique_ptr = compiler->cpool_unique;
190     do {
191     if ((*cpool_ptr == literal) && !(*cpool_unique_ptr)) {
192     cpool_index = cpool_ptr - compiler->cpool;
193     break;
194     }
195     cpool_ptr++;
196     cpool_unique_ptr++;
197     } while (cpool_ptr < cpool_end);
198     }
199    
200     if (cpool_index == CPOOL_SIZE) {
201     /* Must allocate a new entry in the literal pool. */
202     if (compiler->cpool_fill < CPOOL_SIZE) {
203     cpool_index = compiler->cpool_fill;
204     compiler->cpool_fill++;
205     }
206     else {
207     FAIL_IF(push_cpool(compiler));
208     cpool_index = 0;
209     compiler->cpool_fill = 1;
210     }
211     }
212    
213     SLJIT_ASSERT((inst & 0xfff) == 0);
214     ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
215     FAIL_IF(!ptr);
216     compiler->size++;
217     *ptr = inst | cpool_index;
218    
219     compiler->cpool[cpool_index] = literal;
220     compiler->cpool_unique[cpool_index] = 0;
221     if (compiler->cpool_diff == CONST_POOL_EMPTY)
222     compiler->cpool_diff = compiler->size;
223     return SLJIT_SUCCESS;
224     }
225    
226     static int push_inst_with_unique_literal(struct sljit_compiler *compiler, sljit_uw inst, sljit_uw literal)
227     {
228     sljit_uw* ptr;
229     if (SLJIT_UNLIKELY((compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092)) || compiler->cpool_fill >= CPOOL_SIZE))
230     FAIL_IF(push_cpool(compiler));
231    
232     SLJIT_ASSERT(compiler->cpool_fill < CPOOL_SIZE && (inst & 0xfff) == 0);
233     ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
234     FAIL_IF(!ptr);
235     compiler->size++;
236     *ptr = inst | compiler->cpool_fill;
237    
238     compiler->cpool[compiler->cpool_fill] = literal;
239     compiler->cpool_unique[compiler->cpool_fill] = 1;
240     compiler->cpool_fill++;
241     if (compiler->cpool_diff == CONST_POOL_EMPTY)
242     compiler->cpool_diff = compiler->size;
243     return SLJIT_SUCCESS;
244     }
245    
246     static SLJIT_INLINE int prepare_blx(struct sljit_compiler *compiler)
247     {
248     /* Place for at least two instruction (doesn't matter whether the first has a literal). */
249     if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4088)))
250     return push_cpool(compiler);
251     return SLJIT_SUCCESS;
252     }
253    
254     static SLJIT_INLINE int emit_blx(struct sljit_compiler *compiler)
255     {
256     /* Must follow tightly the previous instruction (to be able to convert it to bl instruction). */
257     SLJIT_ASSERT(compiler->cpool_diff == CONST_POOL_EMPTY || compiler->size - compiler->cpool_diff < MAX_DIFFERENCE(4092));
258     return push_inst(compiler, BLX | RM(TMP_REG1));
259     }
260    
261     static sljit_uw patch_pc_relative_loads(sljit_uw *last_pc_patch, sljit_uw *code_ptr, sljit_uw* const_pool, sljit_uw cpool_size)
262     {
263     sljit_uw diff;
264     sljit_uw ind;
265     sljit_uw counter = 0;
266     sljit_uw* clear_const_pool = const_pool;
267     sljit_uw* clear_const_pool_end = const_pool + cpool_size;
268    
269     SLJIT_ASSERT(const_pool - code_ptr <= CONST_POOL_ALIGNMENT);
270     /* Set unused flag for all literals in the constant pool.
271     I.e.: unused literals can belong to branches, which can be encoded as B or BL.
272     We can "compress" the constant pool by discarding these literals. */
273     while (clear_const_pool < clear_const_pool_end)
274     *clear_const_pool++ = (sljit_uw)(-1);
275    
276     while (last_pc_patch < code_ptr) {
277     /* Data transfer instruction with Rn == r15. */
278     if ((*last_pc_patch & 0x0c0f0000) == 0x040f0000) {
279     diff = const_pool - last_pc_patch;
280     ind = (*last_pc_patch) & 0xfff;
281    
282     /* Must be a load instruction with immediate offset. */
283     SLJIT_ASSERT(ind < cpool_size && !(*last_pc_patch & (1 << 25)) && (*last_pc_patch & (1 << 20)));
284     if ((int)const_pool[ind] < 0) {
285     const_pool[ind] = counter;
286     ind = counter;
287     counter++;
288     }
289     else
290     ind = const_pool[ind];
291    
292     SLJIT_ASSERT(diff >= 1);
293     if (diff >= 2 || ind > 0) {
294     diff = (diff + ind - 2) << 2;
295     SLJIT_ASSERT(diff <= 0xfff);
296     *last_pc_patch = (*last_pc_patch & ~0xfff) | diff;
297     }
298     else
299     *last_pc_patch = (*last_pc_patch & ~(0xfff | (1 << 23))) | 0x004;
300     }
301     last_pc_patch++;
302     }
303     return counter;
304     }
305    
306     /* In some rare ocasions we may need future patches. The probability is close to 0 in practice. */
307     struct future_patch {
308     struct future_patch* next;
309     int index;
310     int value;
311     };
312    
313     static SLJIT_INLINE int resolve_const_pool_index(struct future_patch **first_patch, sljit_uw cpool_current_index, sljit_uw *cpool_start_address, sljit_uw *buf_ptr)
314     {
315     int value;
316     struct future_patch *curr_patch, *prev_patch;
317    
318     /* Using the values generated by patch_pc_relative_loads. */
319     if (!*first_patch)
320     value = (int)cpool_start_address[cpool_current_index];
321     else {
322     curr_patch = *first_patch;
323     prev_patch = 0;
324     while (1) {
325     if (!curr_patch) {
326     value = (int)cpool_start_address[cpool_current_index];
327     break;
328     }
329     if ((sljit_uw)curr_patch->index == cpool_current_index) {
330     value = curr_patch->value;
331     if (prev_patch)
332     prev_patch->next = curr_patch->next;
333     else
334     *first_patch = curr_patch->next;
335     SLJIT_FREE(curr_patch);
336     break;
337     }
338     prev_patch = curr_patch;
339     curr_patch = curr_patch->next;
340     }
341     }
342    
343     if (value >= 0) {
344     if ((sljit_uw)value > cpool_current_index) {
345     curr_patch = (struct future_patch*)SLJIT_MALLOC(sizeof(struct future_patch));
346     if (!curr_patch) {
347     while (*first_patch) {
348     curr_patch = *first_patch;
349     *first_patch = (*first_patch)->next;
350     SLJIT_FREE(curr_patch);
351     }
352     return SLJIT_ERR_ALLOC_FAILED;
353     }
354     curr_patch->next = *first_patch;
355     curr_patch->index = value;
356     curr_patch->value = cpool_start_address[value];
357     *first_patch = curr_patch;
358     }
359     cpool_start_address[value] = *buf_ptr;
360     }
361     return SLJIT_SUCCESS;
362     }
363    
364     #else
365    
366     static int push_inst(struct sljit_compiler *compiler, sljit_uw inst)
367     {
368     sljit_uw* ptr;
369    
370     ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
371     FAIL_IF(!ptr);
372     compiler->size++;
373     *ptr = inst;
374     return SLJIT_SUCCESS;
375     }
376    
377     static SLJIT_INLINE int emit_imm(struct sljit_compiler *compiler, int reg, sljit_w imm)
378     {
379     FAIL_IF(push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | (imm & 0xfff)));
380     return push_inst(compiler, MOVT | RD(reg) | ((imm >> 12) & 0xf0000) | ((imm >> 16) & 0xfff));
381     }
382    
383     #endif
384    
385     static SLJIT_INLINE int detect_jump_type(struct sljit_jump *jump, sljit_uw *code_ptr, sljit_uw *code)
386     {
387     sljit_w diff;
388    
389     if (jump->flags & SLJIT_REWRITABLE_JUMP)
390     return 0;
391    
392     #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
393     if (jump->flags & IS_BL)
394     code_ptr--;
395    
396     if (jump->flags & JUMP_ADDR)
397     diff = ((sljit_w)jump->u.target - (sljit_w)(code_ptr + 2));
398     else {
399     SLJIT_ASSERT(jump->flags & JUMP_LABEL);
400     diff = ((sljit_w)(code + jump->u.label->size) - (sljit_w)(code_ptr + 2));
401     }
402    
403 zherczeg 722 /* Branch to Thumb code has not been optimized yet. */
404 ph10 662 if (diff & 0x3)
405     return 0;
406    
407     diff >>= 2;
408     if (jump->flags & IS_BL) {
409     if (diff <= 0x01ffffff && diff >= -0x02000000) {
410     *code_ptr = (BL - CONDITIONAL) | (*(code_ptr + 1) & COND_MASK);
411     jump->flags |= PATCH_B;
412     return 1;
413     }
414     }
415     else {
416     if (diff <= 0x01ffffff && diff >= -0x02000000) {
417     *code_ptr = (B - CONDITIONAL) | (*code_ptr & COND_MASK);
418     jump->flags |= PATCH_B;
419     }
420     }
421     #else
422     if (jump->flags & JUMP_ADDR)
423     diff = ((sljit_w)jump->u.target - (sljit_w)code_ptr);
424     else {
425     SLJIT_ASSERT(jump->flags & JUMP_LABEL);
426     diff = ((sljit_w)(code + jump->u.label->size) - (sljit_w)code_ptr);
427     }
428    
429 zherczeg 722 /* Branch to Thumb code has not been optimized yet. */
430 ph10 662 if (diff & 0x3)
431     return 0;
432    
433     diff >>= 2;
434     if (diff <= 0x01ffffff && diff >= -0x02000000) {
435     code_ptr -= 2;
436     *code_ptr = ((jump->flags & IS_BL) ? (BL - CONDITIONAL) : (B - CONDITIONAL)) | (code_ptr[2] & COND_MASK);
437     jump->flags |= PATCH_B;
438     return 1;
439     }
440     #endif
441     return 0;
442     }
443    
444     static SLJIT_INLINE void inline_set_jump_addr(sljit_uw addr, sljit_uw new_addr, int flush)
445     {
446     #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
447     sljit_uw *ptr = (sljit_uw*)addr;
448     sljit_uw *inst = (sljit_uw*)ptr[0];
449     sljit_uw mov_pc = ptr[1];
450     int bl = (mov_pc & 0x0000f000) != RD(TMP_PC);
451     sljit_w diff = (sljit_w)(((sljit_w)new_addr - (sljit_w)(inst + 2)) >> 2);
452    
453     if (diff <= 0x7fffff && diff >= -0x800000) {
454     /* Turn to branch. */
455     if (!bl) {
456     inst[0] = (mov_pc & COND_MASK) | (B - CONDITIONAL) | (diff & 0xffffff);
457     if (flush) {
458     SLJIT_CACHE_FLUSH(inst, inst + 1);
459     }
460     } else {
461     inst[0] = (mov_pc & COND_MASK) | (BL - CONDITIONAL) | (diff & 0xffffff);
462     inst[1] = NOP;
463     if (flush) {
464     SLJIT_CACHE_FLUSH(inst, inst + 2);
465     }
466     }
467     } else {
468     /* Get the position of the constant. */
469     if (mov_pc & (1 << 23))
470     ptr = inst + ((mov_pc & 0xfff) >> 2) + 2;
471     else
472     ptr = inst + 1;
473    
474     if (*inst != mov_pc) {
475     inst[0] = mov_pc;
476     if (!bl) {
477     if (flush) {
478     SLJIT_CACHE_FLUSH(inst, inst + 1);
479     }
480     } else {
481     inst[1] = BLX | RM(TMP_REG1);
482     if (flush) {
483     SLJIT_CACHE_FLUSH(inst, inst + 2);
484     }
485     }
486     }
487     *ptr = new_addr;
488     }
489     #else
490     sljit_uw *inst = (sljit_uw*)addr;
491     SLJIT_ASSERT((inst[0] & 0xfff00000) == MOVW && (inst[1] & 0xfff00000) == MOVT);
492     inst[0] = MOVW | (inst[0] & 0xf000) | ((new_addr << 4) & 0xf0000) | (new_addr & 0xfff);
493     inst[1] = MOVT | (inst[1] & 0xf000) | ((new_addr >> 12) & 0xf0000) | ((new_addr >> 16) & 0xfff);
494     if (flush) {
495     SLJIT_CACHE_FLUSH(inst, inst + 2);
496     }
497     #endif
498     }
499    
500     static sljit_uw get_immediate(sljit_uw imm);
501    
502     static SLJIT_INLINE void inline_set_const(sljit_uw addr, sljit_w new_constant, int flush)
503     {
504     #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
505     sljit_uw *ptr = (sljit_uw*)addr;
506     sljit_uw *inst = (sljit_uw*)ptr[0];
507     sljit_uw ldr_literal = ptr[1];
508     sljit_uw src2;
509    
510     src2 = get_immediate(new_constant);
511     if (src2) {
512     *inst = 0xe3a00000 | (ldr_literal & 0xf000) | src2;
513     if (flush) {
514     SLJIT_CACHE_FLUSH(inst, inst + 1);
515     }
516     return;
517     }
518    
519     src2 = get_immediate(~new_constant);
520     if (src2) {
521     *inst = 0xe3e00000 | (ldr_literal & 0xf000) | src2;
522     if (flush) {
523     SLJIT_CACHE_FLUSH(inst, inst + 1);
524     }
525     return;
526     }
527    
528     if (ldr_literal & (1 << 23))
529     ptr = inst + ((ldr_literal & 0xfff) >> 2) + 2;
530     else
531     ptr = inst + 1;
532    
533     if (*inst != ldr_literal) {
534     *inst = ldr_literal;
535     if (flush) {
536     SLJIT_CACHE_FLUSH(inst, inst + 1);
537     }
538     }
539     *ptr = new_constant;
540     #else
541     sljit_uw *inst = (sljit_uw*)addr;
542     SLJIT_ASSERT((inst[0] & 0xfff00000) == MOVW && (inst[1] & 0xfff00000) == MOVT);
543     inst[0] = MOVW | (inst[0] & 0xf000) | ((new_constant << 4) & 0xf0000) | (new_constant & 0xfff);
544     inst[1] = MOVT | (inst[1] & 0xf000) | ((new_constant >> 12) & 0xf0000) | ((new_constant >> 16) & 0xfff);
545     if (flush) {
546     SLJIT_CACHE_FLUSH(inst, inst + 2);
547     }
548     #endif
549     }
550    
551 zherczeg 740 SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler)
552 ph10 662 {
553     struct sljit_memory_fragment *buf;
554     sljit_uw *code;
555     sljit_uw *code_ptr;
556     sljit_uw *buf_ptr;
557     sljit_uw *buf_end;
558     sljit_uw size;
559     sljit_uw word_count;
560     #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
561     sljit_uw cpool_size;
562     sljit_uw cpool_skip_alignment;
563     sljit_uw cpool_current_index;
564     sljit_uw *cpool_start_address;
565     sljit_uw *last_pc_patch;
566     struct future_patch *first_patch;
567     #endif
568    
569     struct sljit_label *label;
570     struct sljit_jump *jump;
571     struct sljit_const *const_;
572    
573     CHECK_ERROR_PTR();
574     check_sljit_generate_code(compiler);
575     reverse_buf(compiler);
576    
577     /* Second code generation pass. */
578     #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
579     size = compiler->size + (compiler->patches << 1);
580     if (compiler->cpool_fill > 0)
581     size += compiler->cpool_fill + CONST_POOL_ALIGNMENT - 1;
582     #else
583     size = compiler->size;
584     #endif
585     code = (sljit_uw*)SLJIT_MALLOC_EXEC(size * sizeof(sljit_uw));
586     PTR_FAIL_WITH_EXEC_IF(code);
587     buf = compiler->buf;
588    
589     #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
590     cpool_size = 0;
591     cpool_skip_alignment = 0;
592     cpool_current_index = 0;
593     cpool_start_address = NULL;
594     first_patch = NULL;
595     last_pc_patch = code;
596     #endif
597    
598     code_ptr = code;
599     word_count = 0;
600    
601     label = compiler->labels;
602     jump = compiler->jumps;
603     const_ = compiler->consts;
604    
605     if (label && label->size == 0) {
606     label->addr = (sljit_uw)code;
607     label->size = 0;
608     label = label->next;
609     }
610    
611     do {
612     buf_ptr = (sljit_uw*)buf->memory;
613     buf_end = buf_ptr + (buf->used_size >> 2);
614     do {
615     word_count++;
616     #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
617     if (cpool_size > 0) {
618     if (cpool_skip_alignment > 0) {
619     buf_ptr++;
620     cpool_skip_alignment--;
621     }
622     else {
623     if (SLJIT_UNLIKELY(resolve_const_pool_index(&first_patch, cpool_current_index, cpool_start_address, buf_ptr))) {
624     SLJIT_FREE_EXEC(code);
625     compiler->error = SLJIT_ERR_ALLOC_FAILED;
626     return NULL;
627     }
628     buf_ptr++;
629     if (++cpool_current_index >= cpool_size) {
630     SLJIT_ASSERT(!first_patch);
631     cpool_size = 0;
632     if (label && label->size == word_count) {
633     /* Points after the current instruction. */
634     label->addr = (sljit_uw)code_ptr;
635     label->size = code_ptr - code;
636     label = label->next;
637     }
638     }
639     }
640     }
641     else if ((*buf_ptr & 0xff000000) != PUSH_POOL) {
642     #endif
643     *code_ptr = *buf_ptr++;
644     /* These structures are ordered by their address. */
645     SLJIT_ASSERT(!label || label->size >= word_count);
646     SLJIT_ASSERT(!jump || jump->addr >= word_count);
647     SLJIT_ASSERT(!const_ || const_->addr >= word_count);
648     if (jump && jump->addr == word_count) {
649     #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
650     if (detect_jump_type(jump, code_ptr, code))
651     code_ptr--;
652     jump->addr = (sljit_uw)code_ptr;
653     #else
654     jump->addr = (sljit_uw)(code_ptr - 2);
655     if (detect_jump_type(jump, code_ptr, code))
656     code_ptr -= 2;
657     #endif
658     jump = jump->next;
659     }
660     if (label && label->size == word_count) {
661     /* code_ptr can be affected above. */
662     label->addr = (sljit_uw)(code_ptr + 1);
663     label->size = (code_ptr + 1) - code;
664     label = label->next;
665     }
666     if (const_ && const_->addr == word_count) {
667     #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
668     const_->addr = (sljit_uw)code_ptr;
669     #else
670     const_->addr = (sljit_uw)(code_ptr - 1);
671     #endif
672     const_ = const_->next;
673     }
674     code_ptr++;
675     #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
676     }
677     else {
678     /* Fortunately, no need to shift. */
679     cpool_size = *buf_ptr++ & ~PUSH_POOL;
680     SLJIT_ASSERT(cpool_size > 0);
681     cpool_start_address = ALIGN_INSTRUCTION(code_ptr + 1);
682     cpool_current_index = patch_pc_relative_loads(last_pc_patch, code_ptr, cpool_start_address, cpool_size);
683     if (cpool_current_index > 0) {
684     /* Unconditional branch. */
685     *code_ptr = B | (((cpool_start_address - code_ptr) + cpool_current_index - 2) & ~PUSH_POOL);
686     code_ptr = cpool_start_address + cpool_current_index;
687     }
688     cpool_skip_alignment = CONST_POOL_ALIGNMENT - 1;
689     cpool_current_index = 0;
690     last_pc_patch = code_ptr;
691     }
692     #endif
693     } while (buf_ptr < buf_end);
694     buf = buf->next;
695     } while (buf);
696    
697     SLJIT_ASSERT(!label);
698     SLJIT_ASSERT(!jump);
699     SLJIT_ASSERT(!const_);
700    
701     #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
702     SLJIT_ASSERT(cpool_size == 0);
703     if (compiler->cpool_fill > 0) {
704     cpool_start_address = ALIGN_INSTRUCTION(code_ptr);
705     cpool_current_index = patch_pc_relative_loads(last_pc_patch, code_ptr, cpool_start_address, compiler->cpool_fill);
706     if (cpool_current_index > 0)
707     code_ptr = cpool_start_address + cpool_current_index;
708    
709     buf_ptr = compiler->cpool;
710     buf_end = buf_ptr + compiler->cpool_fill;
711     cpool_current_index = 0;
712     while (buf_ptr < buf_end) {
713     if (SLJIT_UNLIKELY(resolve_const_pool_index(&first_patch, cpool_current_index, cpool_start_address, buf_ptr))) {
714     SLJIT_FREE_EXEC(code);
715     compiler->error = SLJIT_ERR_ALLOC_FAILED;
716     return NULL;
717     }
718     buf_ptr++;
719     cpool_current_index++;
720     }
721     SLJIT_ASSERT(!first_patch);
722     }
723     #endif
724    
725     jump = compiler->jumps;
726     while (jump) {
727     buf_ptr = (sljit_uw*)jump->addr;
728    
729     if (jump->flags & PATCH_B) {
730     if (!(jump->flags & JUMP_ADDR)) {
731     SLJIT_ASSERT(jump->flags & JUMP_LABEL);
732     SLJIT_ASSERT(((sljit_w)jump->u.label->addr - (sljit_w)(buf_ptr + 2)) <= 0x01ffffff && ((sljit_w)jump->u.label->addr - (sljit_w)(buf_ptr + 2)) >= -0x02000000);
733     *buf_ptr |= (((sljit_w)jump->u.label->addr - (sljit_w)(buf_ptr + 2)) >> 2) & 0x00ffffff;
734     }
735     else {
736     SLJIT_ASSERT(((sljit_w)jump->u.target - (sljit_w)(buf_ptr + 2)) <= 0x01ffffff && ((sljit_w)jump->u.target - (sljit_w)(buf_ptr + 2)) >= -0x02000000);
737     *buf_ptr |= (((sljit_w)jump->u.target - (sljit_w)(buf_ptr + 2)) >> 2) & 0x00ffffff;
738     }
739     }
740     else if (jump->flags & SLJIT_REWRITABLE_JUMP) {
741     #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
742     jump->addr = (sljit_uw)code_ptr;
743     code_ptr[0] = (sljit_uw)buf_ptr;
744     code_ptr[1] = *buf_ptr;
745     inline_set_jump_addr((sljit_uw)code_ptr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0);
746     code_ptr += 2;
747     #else
748     inline_set_jump_addr((sljit_uw)buf_ptr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0);
749     #endif
750     }
751     else {
752     #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
753     if (jump->flags & IS_BL)
754     buf_ptr--;
755     if (*buf_ptr & (1 << 23))
756     buf_ptr += ((*buf_ptr & 0xfff) >> 2) + 2;
757     else
758     buf_ptr += 1;
759     *buf_ptr = (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target;
760     #else
761     inline_set_jump_addr((sljit_uw)buf_ptr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0);
762     #endif
763     }
764     jump = jump->next;
765     }
766    
767     #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
768     const_ = compiler->consts;
769     while (const_) {
770     buf_ptr = (sljit_uw*)const_->addr;
771     const_->addr = (sljit_uw)code_ptr;
772    
773     code_ptr[0] = (sljit_uw)buf_ptr;
774     code_ptr[1] = *buf_ptr;
775     if (*buf_ptr & (1 << 23))
776     buf_ptr += ((*buf_ptr & 0xfff) >> 2) + 2;
777     else
778     buf_ptr += 1;
779     /* Set the value again (can be a simple constant). */
780     inline_set_const((sljit_uw)code_ptr, *buf_ptr, 0);
781     code_ptr += 2;
782    
783     const_ = const_->next;
784     }
785     #endif
786    
787     SLJIT_ASSERT(code_ptr - code <= (int)size);
788    
789     SLJIT_CACHE_FLUSH(code, code_ptr);
790     compiler->error = SLJIT_ERR_COMPILED;
791 zherczeg 777 compiler->executable_size = size * sizeof(sljit_uw);
792 ph10 662 return code;
793     }
794    
795     /* emit_op inp_flags.
796     WRITE_BACK must be the first, since it is a flag. */
797     #define WRITE_BACK 0x01
798     #define ALLOW_IMM 0x02
799     #define ALLOW_INV_IMM 0x04
800     #define ALLOW_ANY_IMM (ALLOW_IMM | ALLOW_INV_IMM)
801     #define ARG_TEST 0x08
802    
803     /* Creates an index in data_transfer_insts array. */
804     #define WORD_DATA 0x00
805     #define BYTE_DATA 0x10
806     #define HALF_DATA 0x20
807     #define SIGNED_DATA 0x40
808     #define LOAD_DATA 0x80
809    
810     #define EMIT_INSTRUCTION(inst) \
811     FAIL_IF(push_inst(compiler, (inst)))
812    
813     /* Condition: AL. */
814     #define EMIT_DATA_PROCESS_INS(opcode, set_flags, dst, src1, src2) \
815     (0xe0000000 | ((opcode) << 21) | (set_flags) | RD(dst) | RN(src1) | (src2))
816    
817     static int emit_op(struct sljit_compiler *compiler, int op, int inp_flags,
818     int dst, sljit_w dstw,
819     int src1, sljit_w src1w,
820     int src2, sljit_w src2w);
821    
822 zherczeg 740 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_enter(struct sljit_compiler *compiler, int args, int temporaries, int generals, int local_size)
823 ph10 662 {
824     int size;
825     sljit_uw push;
826    
827     CHECK_ERROR();
828     check_sljit_emit_enter(compiler, args, temporaries, generals, local_size);
829    
830     compiler->temporaries = temporaries;
831     compiler->generals = generals;
832    
833     /* Push general registers, temporary registers
834     stmdb sp!, {..., lr} */
835     push = PUSH | (1 << 14);
836     if (temporaries >= 5)
837     push |= 1 << 11;
838     if (temporaries >= 4)
839     push |= 1 << 10;
840     if (generals >= 5)
841     push |= 1 << 8;
842     if (generals >= 4)
843     push |= 1 << 7;
844     if (generals >= 3)
845     push |= 1 << 6;
846     if (generals >= 2)
847     push |= 1 << 5;
848     if (generals >= 1)
849     push |= 1 << 4;
850     EMIT_INSTRUCTION(push);
851    
852     /* Stack must be aligned to 8 bytes: */
853     size = (1 + generals) * sizeof(sljit_uw);
854     if (temporaries >= 4)
855     size += (temporaries - 3) * sizeof(sljit_uw);
856     local_size += size;
857     local_size = (local_size + 7) & ~7;
858     local_size -= size;
859     compiler->local_size = local_size;
860     if (local_size > 0)
861     FAIL_IF(emit_op(compiler, SLJIT_SUB, ALLOW_IMM, SLJIT_LOCALS_REG, 0, SLJIT_LOCALS_REG, 0, SLJIT_IMM, local_size));
862    
863     if (args >= 1)
864     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_GENERAL_REG1, SLJIT_UNUSED, RM(SLJIT_TEMPORARY_REG1)));
865     if (args >= 2)
866     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_GENERAL_REG2, SLJIT_UNUSED, RM(SLJIT_TEMPORARY_REG2)));
867     if (args >= 3)
868     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_GENERAL_REG3, SLJIT_UNUSED, RM(SLJIT_TEMPORARY_REG3)));
869    
870     return SLJIT_SUCCESS;
871     }
872    
873 zherczeg 740 SLJIT_API_FUNC_ATTRIBUTE void sljit_fake_enter(struct sljit_compiler *compiler, int args, int temporaries, int generals, int local_size)
874 ph10 662 {
875     int size;
876    
877     CHECK_ERROR_VOID();
878     check_sljit_fake_enter(compiler, args, temporaries, generals, local_size);
879    
880     compiler->temporaries = temporaries;
881     compiler->generals = generals;
882    
883     size = (1 + generals) * sizeof(sljit_uw);
884     if (temporaries >= 4)
885     size += (temporaries - 3) * sizeof(sljit_uw);
886     local_size += size;
887     local_size = (local_size + 7) & ~7;
888     local_size -= size;
889     compiler->local_size = local_size;
890     }
891    
892 zherczeg 740 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_return(struct sljit_compiler *compiler, int src, sljit_w srcw)
893 ph10 662 {
894     sljit_uw pop;
895    
896     CHECK_ERROR();
897     check_sljit_emit_return(compiler, src, srcw);
898    
899     if (src != SLJIT_UNUSED && src != SLJIT_RETURN_REG)
900     FAIL_IF(emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, SLJIT_RETURN_REG, 0, TMP_REG1, 0, src, srcw));
901    
902     if (compiler->local_size > 0)
903     FAIL_IF(emit_op(compiler, SLJIT_ADD, ALLOW_IMM, SLJIT_LOCALS_REG, 0, SLJIT_LOCALS_REG, 0, SLJIT_IMM, compiler->local_size));
904    
905     pop = POP | (1 << 15);
906     /* Push general registers, temporary registers
907     ldmia sp!, {..., pc} */
908     if (compiler->temporaries >= 5)
909     pop |= 1 << 11;
910     if (compiler->temporaries >= 4)
911     pop |= 1 << 10;
912     if (compiler->generals >= 5)
913     pop |= 1 << 8;
914     if (compiler->generals >= 4)
915     pop |= 1 << 7;
916     if (compiler->generals >= 3)
917     pop |= 1 << 6;
918     if (compiler->generals >= 2)
919     pop |= 1 << 5;
920     if (compiler->generals >= 1)
921     pop |= 1 << 4;
922    
923     return push_inst(compiler, pop);
924     }
925    
926     /* --------------------------------------------------------------------- */
927     /* Operators */
928     /* --------------------------------------------------------------------- */
929    
930     /* s/l - store/load (1 bit)
931     u/s - signed/unsigned (1 bit)
932     w/b/h/N - word/byte/half/NOT allowed (2 bit)
933     It contans 16 items, but not all are different. */
934    
935     static sljit_w data_transfer_insts[16] = {
936     /* s u w */ 0xe5000000 /* str */,
937     /* s u b */ 0xe5400000 /* strb */,
938     /* s u h */ 0xe10000b0 /* strh */,
939     /* s u N */ 0x00000000 /* not allowed */,
940     /* s s w */ 0xe5000000 /* str */,
941     /* s s b */ 0xe5400000 /* strb */,
942     /* s s h */ 0xe10000b0 /* strh */,
943     /* s s N */ 0x00000000 /* not allowed */,
944    
945     /* l u w */ 0xe5100000 /* ldr */,
946     /* l u b */ 0xe5500000 /* ldrb */,
947     /* l u h */ 0xe11000b0 /* ldrh */,
948     /* l u N */ 0x00000000 /* not allowed */,
949     /* l s w */ 0xe5100000 /* ldr */,
950     /* l s b */ 0xe11000d0 /* ldrsb */,
951     /* l s h */ 0xe11000f0 /* ldrsh */,
952     /* l s N */ 0x00000000 /* not allowed */,
953     };
954    
955     #define EMIT_DATA_TRANSFER(type, add, wb, target, base1, base2) \
956     (data_transfer_insts[(type) >> 4] | ((add) << 23) | ((wb) << 21) | (reg_map[target] << 12) | (reg_map[base1] << 16) | (base2))
957     /* Normal ldr/str instruction.
958     Type2: ldrsb, ldrh, ldrsh */
959     #define IS_TYPE1_TRANSFER(type) \
960     (data_transfer_insts[(type) >> 4] & 0x04000000)
961     #define TYPE2_TRANSFER_IMM(imm) \
962     (((imm) & 0xf) | (((imm) & 0xf0) << 4) | (1 << 22))
963    
964     /* flags: */
965     /* Arguments are swapped. */
966     #define ARGS_SWAPPED 0x01
967     /* Inverted immediate. */
968     #define INV_IMM 0x02
969     /* Source and destination is register. */
970     #define REG_DEST 0x04
971     #define REG_SOURCE 0x08
972     /* One instruction is enough. */
973     #define FAST_DEST 0x10
974     /* Multiple instructions are required. */
975     #define SLOW_DEST 0x20
976     /* SET_FLAGS must be (1 << 20) as it is also the value of S bit (can be used for optimization). */
977     #define SET_FLAGS (1 << 20)
978     /* dst: reg
979     src1: reg
980     src2: reg or imm (if allowed)
981     SRC2_IMM must be (1 << 25) as it is also the value of I bit (can be used for optimization). */
982     #define SRC2_IMM (1 << 25)
983    
984     #define EMIT_DATA_PROCESS_INS_AND_RETURN(opcode) \
985     return push_inst(compiler, EMIT_DATA_PROCESS_INS(opcode, flags & SET_FLAGS, dst, src1, (src2 & SRC2_IMM) ? src2 : RM(src2)))
986    
987     #define EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(opcode, dst, src1, src2) \
988     return push_inst(compiler, EMIT_DATA_PROCESS_INS(opcode, flags & SET_FLAGS, dst, src1, src2))
989    
990     #define EMIT_SHIFT_INS_AND_RETURN(opcode) \
991     SLJIT_ASSERT(!(flags & INV_IMM) && !(src2 & SRC2_IMM)); \
992     if (compiler->shift_imm != 0x20) { \
993     SLJIT_ASSERT(src1 == TMP_REG1); \
994     SLJIT_ASSERT(!(flags & ARGS_SWAPPED)); \
995     return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, flags & SET_FLAGS, dst, SLJIT_UNUSED, (compiler->shift_imm << 7) | (opcode << 5) | reg_map[src2])); \
996     } \
997     return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, flags & SET_FLAGS, dst, SLJIT_UNUSED, (reg_map[(flags & ARGS_SWAPPED) ? src1 : src2] << 8) | (opcode << 5) | 0x10 | ((flags & ARGS_SWAPPED) ? reg_map[src2] : reg_map[src1])));
998    
999     static SLJIT_INLINE int emit_single_op(struct sljit_compiler *compiler, int op, int flags,
1000     int dst, int src1, int src2)
1001     {
1002     sljit_w mul_inst;
1003    
1004     switch (GET_OPCODE(op)) {
1005     case SLJIT_ADD:
1006     SLJIT_ASSERT(!(flags & INV_IMM));
1007     EMIT_DATA_PROCESS_INS_AND_RETURN(ADD_DP);
1008    
1009     case SLJIT_ADDC:
1010     SLJIT_ASSERT(!(flags & INV_IMM));
1011     EMIT_DATA_PROCESS_INS_AND_RETURN(ADC_DP);
1012    
1013     case SLJIT_SUB:
1014     SLJIT_ASSERT(!(flags & INV_IMM));
1015     if (!(flags & ARGS_SWAPPED))
1016     EMIT_DATA_PROCESS_INS_AND_RETURN(SUB_DP);
1017     EMIT_DATA_PROCESS_INS_AND_RETURN(RSB_DP);
1018    
1019     case SLJIT_SUBC:
1020     SLJIT_ASSERT(!(flags & INV_IMM));
1021     if (!(flags & ARGS_SWAPPED))
1022     EMIT_DATA_PROCESS_INS_AND_RETURN(SBC_DP);
1023     EMIT_DATA_PROCESS_INS_AND_RETURN(RSC_DP);
1024    
1025     case SLJIT_MUL:
1026     SLJIT_ASSERT(!(flags & INV_IMM));
1027     SLJIT_ASSERT(!(src2 & SRC2_IMM));
1028     if (SLJIT_UNLIKELY(op & SLJIT_SET_O))
1029     mul_inst = SMULL | (reg_map[TMP_REG3] << 16) | (reg_map[dst] << 12);
1030     else
1031     mul_inst = MUL | (reg_map[dst] << 16);
1032    
1033     if (dst != src2)
1034     FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src1] << 8) | reg_map[src2]));
1035     else if (dst != src1)
1036     FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src2] << 8) | reg_map[src1]));
1037     else {
1038     /* Rm and Rd must not be the same register. */
1039     SLJIT_ASSERT(dst != TMP_REG1);
1040     FAIL_IF(push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, reg_map[src2])));
1041     FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src2] << 8) | reg_map[TMP_REG1]));
1042     }
1043    
1044     if (!(op & SLJIT_SET_O))
1045     return SLJIT_SUCCESS;
1046    
1047     /* We need to use TMP_REG3. */
1048     compiler->cache_arg = 0;
1049     compiler->cache_argw = 0;
1050     /* cmp TMP_REG2, dst asr #31. */
1051     return push_inst(compiler, EMIT_DATA_PROCESS_INS(CMP_DP, SET_FLAGS, SLJIT_UNUSED, TMP_REG3, RM(dst) | 0xfc0));
1052    
1053     case SLJIT_AND:
1054     if (!(flags & INV_IMM))
1055     EMIT_DATA_PROCESS_INS_AND_RETURN(AND_DP);
1056     EMIT_DATA_PROCESS_INS_AND_RETURN(BIC_DP);
1057    
1058     case SLJIT_OR:
1059     SLJIT_ASSERT(!(flags & INV_IMM));
1060     EMIT_DATA_PROCESS_INS_AND_RETURN(ORR_DP);
1061    
1062     case SLJIT_XOR:
1063     SLJIT_ASSERT(!(flags & INV_IMM));
1064     EMIT_DATA_PROCESS_INS_AND_RETURN(EOR_DP);
1065    
1066     case SLJIT_SHL:
1067     EMIT_SHIFT_INS_AND_RETURN(0);
1068    
1069     case SLJIT_LSHR:
1070     EMIT_SHIFT_INS_AND_RETURN(1);
1071    
1072     case SLJIT_ASHR:
1073     EMIT_SHIFT_INS_AND_RETURN(2);
1074    
1075     case SLJIT_MOV:
1076     SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
1077     if (dst != src2) {
1078     if (src2 & SRC2_IMM) {
1079     if (flags & INV_IMM)
1080     EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
1081     EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
1082     }
1083     EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, reg_map[src2]);
1084     }
1085     return SLJIT_SUCCESS;
1086    
1087     case SLJIT_MOV_UB:
1088     case SLJIT_MOV_SB:
1089     SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
1090     if ((flags & (REG_DEST | REG_SOURCE)) == (REG_DEST | REG_SOURCE)) {
1091     #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1092     if (op == SLJIT_MOV_UB)
1093     return push_inst(compiler, EMIT_DATA_PROCESS_INS(AND_DP, 0, dst, src2, SRC2_IMM | 0xff));
1094     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (24 << 7) | reg_map[src2]));
1095     return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (24 << 7) | (op == SLJIT_MOV_UB ? 0x20 : 0x40) | reg_map[dst]));
1096     #else
1097     return push_inst(compiler, (op == SLJIT_MOV_UB ? UXTB : SXTB) | RD(dst) | RM(src2));
1098     #endif
1099     }
1100     else if (dst != src2) {
1101     SLJIT_ASSERT(src2 & SRC2_IMM);
1102     if (flags & INV_IMM)
1103     EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
1104     EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
1105     }
1106     return SLJIT_SUCCESS;
1107    
1108     case SLJIT_MOV_UH:
1109     case SLJIT_MOV_SH:
1110     SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
1111     if ((flags & (REG_DEST | REG_SOURCE)) == (REG_DEST | REG_SOURCE)) {
1112     #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1113     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (16 << 7) | reg_map[src2]));
1114     return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (16 << 7) | (op == SLJIT_MOV_UH ? 0x20 : 0x40) | reg_map[dst]));
1115     #else
1116     return push_inst(compiler, (op == SLJIT_MOV_UH ? UXTH : SXTH) | RD(dst) | RM(src2));
1117     #endif
1118     }
1119     else if (dst != src2) {
1120     SLJIT_ASSERT(src2 & SRC2_IMM);
1121     if (flags & INV_IMM)
1122     EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
1123     EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
1124     }
1125     return SLJIT_SUCCESS;
1126    
1127     case SLJIT_NOT:
1128     if (src2 & SRC2_IMM) {
1129     if (flags & INV_IMM)
1130     EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
1131     EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
1132     }
1133     EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, RM(src2));
1134    
1135     case SLJIT_CLZ:
1136     SLJIT_ASSERT(!(flags & INV_IMM));
1137     SLJIT_ASSERT(!(src2 & SRC2_IMM));
1138     FAIL_IF(push_inst(compiler, CLZ | RD(dst) | RM(src2)));
1139     if (flags & SET_FLAGS)
1140     EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(CMP_DP, SLJIT_UNUSED, dst, SRC2_IMM);
1141     return SLJIT_SUCCESS;
1142     }
1143     SLJIT_ASSERT_STOP();
1144     return SLJIT_SUCCESS;
1145     }
1146    
1147     #undef EMIT_DATA_PROCESS_INS_AND_RETURN
1148     #undef EMIT_FULL_DATA_PROCESS_INS_AND_RETURN
1149     #undef EMIT_SHIFT_INS_AND_RETURN
1150    
1151     /* Tests whether the immediate can be stored in the 12 bit imm field.
1152     Returns with 0 if not possible. */
1153     static sljit_uw get_immediate(sljit_uw imm)
1154     {
1155     int rol;
1156    
1157     if (imm <= 0xff)
1158     return SRC2_IMM | imm;
1159    
1160     if (!(imm & 0xff000000)) {
1161     imm <<= 8;
1162     rol = 8;
1163     }
1164     else {
1165     imm = (imm << 24) | (imm >> 8);
1166     rol = 0;
1167     }
1168    
1169     if (!(imm & 0xff000000)) {
1170     imm <<= 8;
1171     rol += 4;
1172     }
1173    
1174     if (!(imm & 0xf0000000)) {
1175     imm <<= 4;
1176     rol += 2;
1177     }
1178    
1179     if (!(imm & 0xc0000000)) {
1180     imm <<= 2;
1181     rol += 1;
1182     }
1183    
1184     if (!(imm & 0x00ffffff))
1185     return SRC2_IMM | (imm >> 24) | (rol << 8);
1186     else
1187     return 0;
1188     }
1189    
1190     #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1191     static int generate_int(struct sljit_compiler *compiler, int reg, sljit_uw imm, int positive)
1192     {
1193     sljit_uw mask;
1194     sljit_uw imm1;
1195     sljit_uw imm2;
1196     int rol;
1197    
1198     /* Step1: Search a zero byte (8 continous zero bit). */
1199     mask = 0xff000000;
1200     rol = 8;
1201     while(1) {
1202     if (!(imm & mask)) {
1203     /* Rol imm by rol. */
1204     imm = (imm << rol) | (imm >> (32 - rol));
1205     /* Calculate arm rol. */
1206     rol = 4 + (rol >> 1);
1207     break;
1208     }
1209     rol += 2;
1210     mask >>= 2;
1211     if (mask & 0x3) {
1212     /* rol by 8. */
1213     imm = (imm << 8) | (imm >> 24);
1214     mask = 0xff00;
1215     rol = 24;
1216     while (1) {
1217     if (!(imm & mask)) {
1218     /* Rol imm by rol. */
1219     imm = (imm << rol) | (imm >> (32 - rol));
1220     /* Calculate arm rol. */
1221     rol = (rol >> 1) - 8;
1222     break;
1223     }
1224     rol += 2;
1225     mask >>= 2;
1226     if (mask & 0x3)
1227     return 0;
1228     }
1229     break;
1230     }
1231     }
1232    
1233     /* The low 8 bit must be zero. */
1234     SLJIT_ASSERT(!(imm & 0xff));
1235    
1236     if (!(imm & 0xff000000)) {
1237     imm1 = SRC2_IMM | ((imm >> 16) & 0xff) | (((rol + 4) & 0xf) << 8);
1238     imm2 = SRC2_IMM | ((imm >> 8) & 0xff) | (((rol + 8) & 0xf) << 8);
1239     }
1240     else if (imm & 0xc0000000) {
1241     imm1 = SRC2_IMM | ((imm >> 24) & 0xff) | ((rol & 0xf) << 8);
1242     imm <<= 8;
1243     rol += 4;
1244    
1245     if (!(imm & 0xff000000)) {
1246     imm <<= 8;
1247     rol += 4;
1248     }
1249    
1250     if (!(imm & 0xf0000000)) {
1251     imm <<= 4;
1252     rol += 2;
1253     }
1254    
1255     if (!(imm & 0xc0000000)) {
1256     imm <<= 2;
1257     rol += 1;
1258     }
1259    
1260     if (!(imm & 0x00ffffff))
1261     imm2 = SRC2_IMM | (imm >> 24) | ((rol & 0xf) << 8);
1262     else
1263     return 0;
1264     }
1265     else {
1266     if (!(imm & 0xf0000000)) {
1267     imm <<= 4;
1268     rol += 2;
1269     }
1270    
1271     if (!(imm & 0xc0000000)) {
1272     imm <<= 2;
1273     rol += 1;
1274     }
1275    
1276     imm1 = SRC2_IMM | ((imm >> 24) & 0xff) | ((rol & 0xf) << 8);
1277     imm <<= 8;
1278     rol += 4;
1279    
1280     if (!(imm & 0xf0000000)) {
1281     imm <<= 4;
1282     rol += 2;
1283     }
1284    
1285     if (!(imm & 0xc0000000)) {
1286     imm <<= 2;
1287     rol += 1;
1288     }
1289    
1290     if (!(imm & 0x00ffffff))
1291     imm2 = SRC2_IMM | (imm >> 24) | ((rol & 0xf) << 8);
1292     else
1293     return 0;
1294     }
1295    
1296     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(positive ? MOV_DP : MVN_DP, 0, reg, SLJIT_UNUSED, imm1));
1297     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(positive ? ORR_DP : BIC_DP, 0, reg, reg, imm2));
1298     return 1;
1299     }
1300     #endif
1301    
1302     static int load_immediate(struct sljit_compiler *compiler, int reg, sljit_uw imm)
1303     {
1304     sljit_uw tmp;
1305    
1306     #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
1307     if (!(imm & ~0xffff))
1308     return push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | (imm & 0xfff));
1309     #endif
1310    
1311     /* Create imm by 1 inst. */
1312     tmp = get_immediate(imm);
1313     if (tmp) {
1314     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, tmp));
1315     return SLJIT_SUCCESS;
1316     }
1317    
1318     tmp = get_immediate(~imm);
1319     if (tmp) {
1320     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MVN_DP, 0, reg, SLJIT_UNUSED, tmp));
1321     return SLJIT_SUCCESS;
1322     }
1323    
1324     #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1325     /* Create imm by 2 inst. */
1326     FAIL_IF(generate_int(compiler, reg, imm, 1));
1327     FAIL_IF(generate_int(compiler, reg, ~imm, 0));
1328    
1329     /* Load integer. */
1330     return push_inst_with_literal(compiler, EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0, reg, TMP_PC, 0), imm);
1331     #else
1332     return emit_imm(compiler, reg, imm);
1333     #endif
1334     }
1335    
1336     /* Can perform an operation using at most 1 instruction. */
1337     static int getput_arg_fast(struct sljit_compiler *compiler, int inp_flags, int reg, int arg, sljit_w argw)
1338     {
1339     sljit_uw imm;
1340    
1341     if (arg & SLJIT_IMM) {
1342     imm = get_immediate(argw);
1343     if (imm) {
1344     if (inp_flags & ARG_TEST)
1345     return 1;
1346     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, imm));
1347     return -1;
1348     }
1349     imm = get_immediate(~argw);
1350     if (imm) {
1351     if (inp_flags & ARG_TEST)
1352     return 1;
1353     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MVN_DP, 0, reg, SLJIT_UNUSED, imm));
1354     return -1;
1355     }
1356     return (inp_flags & ARG_TEST) ? SLJIT_SUCCESS : 0;
1357     }
1358    
1359     SLJIT_ASSERT(arg & SLJIT_MEM);
1360    
1361     /* Fast loads/stores. */
1362     if (arg & 0xf) {
1363     if (!(arg & 0xf0)) {
1364     if (IS_TYPE1_TRANSFER(inp_flags)) {
1365     if (argw >= 0 && argw <= 0xfff) {
1366     if (inp_flags & ARG_TEST)
1367     return 1;
1368     EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, argw));
1369     return -1;
1370     }
1371     if (argw < 0 && argw >= -0xfff) {
1372     if (inp_flags & ARG_TEST)
1373     return 1;
1374     EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 0, inp_flags & WRITE_BACK, reg, arg & 0xf, -argw));
1375     return -1;
1376     }
1377     }
1378     else {
1379     if (argw >= 0 && argw <= 0xff) {
1380     if (inp_flags & ARG_TEST)
1381     return 1;
1382     EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, TYPE2_TRANSFER_IMM(argw)));
1383     return -1;
1384     }
1385     if (argw < 0 && argw >= -0xff) {
1386     if (inp_flags & ARG_TEST)
1387     return 1;
1388     argw = -argw;
1389     EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 0, inp_flags & WRITE_BACK, reg, arg & 0xf, TYPE2_TRANSFER_IMM(argw)));
1390     return -1;
1391     }
1392     }
1393     }
1394     else if ((argw & 0x3) == 0 || IS_TYPE1_TRANSFER(inp_flags)) {
1395     if (inp_flags & ARG_TEST)
1396     return 1;
1397     EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf,
1398     RM((arg >> 4) & 0xf) | (IS_TYPE1_TRANSFER(inp_flags) ? SRC2_IMM : 0) | ((argw & 0x3) << 7)));
1399     return -1;
1400     }
1401     }
1402    
1403     return (inp_flags & ARG_TEST) ? SLJIT_SUCCESS : 0;
1404     }
1405    
1406     /* See getput_arg below.
1407     Note: can_cache is called only for binary operators. Those
1408     operators always uses word arguments without write back. */
1409     static int can_cache(int arg, sljit_w argw, int next_arg, sljit_w next_argw)
1410     {
1411     /* Immediate caching is not supported as it would be an operation on constant arguments. */
1412     if (arg & SLJIT_IMM)
1413     return 0;
1414    
1415     /* Always a simple operation. */
1416     if (arg & 0xf0)
1417     return 0;
1418    
1419     if (!(arg & 0xf)) {
1420     /* Immediate access. */
1421     if ((next_arg & SLJIT_MEM) && ((sljit_uw)argw - (sljit_uw)next_argw <= 0xfff || (sljit_uw)next_argw - (sljit_uw)argw <= 0xfff))
1422     return 1;
1423     return 0;
1424     }
1425    
1426     if (argw <= 0xfffff && argw >= -0xfffff)
1427     return 0;
1428    
1429     if (argw == next_argw && (next_arg & SLJIT_MEM))
1430     return 1;
1431    
1432     if (arg == next_arg && ((sljit_uw)argw - (sljit_uw)next_argw <= 0xfff || (sljit_uw)next_argw - (sljit_uw)argw <= 0xfff))
1433     return 1;
1434    
1435     return 0;
1436     }
1437    
1438     #define GETPUT_ARG_DATA_TRANSFER(add, wb, target, base, imm) \
1439     if (max_delta & 0xf00) \
1440     FAIL_IF(push_inst(compiler, EMIT_DATA_TRANSFER(inp_flags, add, wb, target, base, imm))); \
1441     else \
1442     FAIL_IF(push_inst(compiler, EMIT_DATA_TRANSFER(inp_flags, add, wb, target, base, TYPE2_TRANSFER_IMM(imm))));
1443    
1444     #define TEST_WRITE_BACK() \
1445     if (inp_flags & WRITE_BACK) { \
1446     tmp_r = arg & 0xf; \
1447     if (reg == tmp_r) { \
1448     /* This can only happen for stores */ \
1449     /* since ldr reg, [reg, ...]! has no meaning */ \
1450     SLJIT_ASSERT(!(inp_flags & LOAD_DATA)); \
1451     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(reg))); \
1452     reg = TMP_REG3; \
1453     } \
1454     }
1455    
1456     /* Emit the necessary instructions. See can_cache above. */
1457     static int getput_arg(struct sljit_compiler *compiler, int inp_flags, int reg, int arg, sljit_w argw, int next_arg, sljit_w next_argw)
1458     {
1459     int tmp_r;
1460     sljit_w max_delta;
1461     sljit_w sign;
1462    
1463     if (arg & SLJIT_IMM) {
1464     SLJIT_ASSERT(inp_flags & LOAD_DATA);
1465     return load_immediate(compiler, reg, argw);
1466     }
1467    
1468     SLJIT_ASSERT(arg & SLJIT_MEM);
1469    
1470     tmp_r = (inp_flags & LOAD_DATA) ? reg : TMP_REG3;
1471     max_delta = IS_TYPE1_TRANSFER(inp_flags) ? 0xfff : 0xff;
1472    
1473     if ((arg & 0xf) == SLJIT_UNUSED) {
1474     /* Write back is not used. */
1475     if ((compiler->cache_arg & SLJIT_IMM) && (((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= (sljit_uw)max_delta || ((sljit_uw)compiler->cache_argw - (sljit_uw)argw) <= (sljit_uw)max_delta)) {
1476     if (((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= (sljit_uw)max_delta) {
1477     sign = 1;
1478     argw = argw - compiler->cache_argw;
1479     }
1480     else {
1481     sign = 0;
1482     argw = compiler->cache_argw - argw;
1483     }
1484    
1485     if (max_delta & 0xf00) {
1486     EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, sign, 0, reg, TMP_REG3, argw));
1487     }
1488     else {
1489     EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, sign, 0, reg, TMP_REG3, TYPE2_TRANSFER_IMM(argw)));
1490     }
1491     return SLJIT_SUCCESS;
1492     }
1493    
1494     /* With write back, we can create some sophisticated loads, but
1495     it is hard to decide whether we should convert downward (0s) or upward (1s). */
1496     if ((next_arg & SLJIT_MEM) && ((sljit_uw)argw - (sljit_uw)next_argw <= (sljit_uw)max_delta || (sljit_uw)next_argw - (sljit_uw)argw <= (sljit_uw)max_delta)) {
1497     SLJIT_ASSERT(inp_flags & LOAD_DATA);
1498    
1499     compiler->cache_arg = SLJIT_IMM;
1500     compiler->cache_argw = argw;
1501     tmp_r = TMP_REG3;
1502     }
1503    
1504     FAIL_IF(load_immediate(compiler, tmp_r, argw));
1505     GETPUT_ARG_DATA_TRANSFER(1, 0, reg, tmp_r, 0);
1506     return SLJIT_SUCCESS;
1507     }
1508    
1509     /* Extended imm addressing for [reg+imm] format. */
1510     sign = (max_delta << 8) | 0xff;
1511     if (!(arg & 0xf0) && argw <= sign && argw >= -sign) {
1512     TEST_WRITE_BACK();
1513     if (argw >= 0) {
1514     sign = 1;
1515     }
1516     else {
1517     sign = 0;
1518     argw = -argw;
1519     }
1520    
1521     /* Optimization: add is 0x4, sub is 0x2. Sign is 1 for add and 0 for sub. */
1522     if (max_delta & 0xf00)
1523     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(SUB_DP << sign, 0, tmp_r, arg & 0xf, SRC2_IMM | (argw >> 12) | 0xa00));
1524     else
1525     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(SUB_DP << sign, 0, tmp_r, arg & 0xf, SRC2_IMM | (argw >> 8) | 0xc00));
1526    
1527     argw &= max_delta;
1528     GETPUT_ARG_DATA_TRANSFER(sign, inp_flags & WRITE_BACK, reg, tmp_r, argw);
1529     return SLJIT_SUCCESS;
1530     }
1531    
1532     if (arg & 0xf0) {
1533     SLJIT_ASSERT((argw & 0x3) && !(max_delta & 0xf00));
1534     if (inp_flags & WRITE_BACK)
1535     tmp_r = arg & 0xf;
1536     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, tmp_r, arg & 0xf, RM((arg >> 4) & 0xf) | ((argw & 0x3) << 7)));
1537     EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, 0, reg, tmp_r, TYPE2_TRANSFER_IMM(0)));
1538     return SLJIT_SUCCESS;
1539     }
1540    
1541     if (compiler->cache_arg == arg && ((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= (sljit_uw)max_delta) {
1542     SLJIT_ASSERT(!(inp_flags & WRITE_BACK));
1543     argw = argw - compiler->cache_argw;
1544     GETPUT_ARG_DATA_TRANSFER(1, 0, reg, TMP_REG3, argw);
1545     return SLJIT_SUCCESS;
1546     }
1547    
1548     if (compiler->cache_arg == arg && ((sljit_uw)compiler->cache_argw - (sljit_uw)argw) <= (sljit_uw)max_delta) {
1549     SLJIT_ASSERT(!(inp_flags & WRITE_BACK));
1550     argw = compiler->cache_argw - argw;
1551     GETPUT_ARG_DATA_TRANSFER(0, 0, reg, TMP_REG3, argw);
1552     return SLJIT_SUCCESS;
1553     }
1554    
1555     if ((compiler->cache_arg & SLJIT_IMM) && compiler->cache_argw == argw) {
1556     TEST_WRITE_BACK();
1557     EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, RM(TMP_REG3) | (max_delta & 0xf00 ? SRC2_IMM : 0)));
1558     return SLJIT_SUCCESS;
1559     }
1560    
1561     if (argw == next_argw && (next_arg & SLJIT_MEM)) {
1562     SLJIT_ASSERT(inp_flags & LOAD_DATA);
1563     FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1564    
1565     compiler->cache_arg = SLJIT_IMM;
1566     compiler->cache_argw = argw;
1567    
1568     TEST_WRITE_BACK();
1569     EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, RM(TMP_REG3) | (max_delta & 0xf00 ? SRC2_IMM : 0)));
1570     return SLJIT_SUCCESS;
1571     }
1572    
1573     if (arg == next_arg && !(inp_flags & WRITE_BACK) && ((sljit_uw)argw - (sljit_uw)next_argw <= (sljit_uw)max_delta || (sljit_uw)next_argw - (sljit_uw)argw <= (sljit_uw)max_delta)) {
1574     SLJIT_ASSERT(inp_flags & LOAD_DATA);
1575     FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1576     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG3, TMP_REG3, reg_map[arg & 0xf]));
1577    
1578     compiler->cache_arg = arg;
1579     compiler->cache_argw = argw;
1580    
1581     GETPUT_ARG_DATA_TRANSFER(1, 0, reg, TMP_REG3, 0);
1582     return SLJIT_SUCCESS;
1583     }
1584    
1585 zherczeg 679 if ((arg & 0xf) == tmp_r) {
1586     compiler->cache_arg = SLJIT_IMM;
1587     compiler->cache_argw = argw;
1588     tmp_r = TMP_REG3;
1589     }
1590    
1591 ph10 662 FAIL_IF(load_immediate(compiler, tmp_r, argw));
1592     EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, reg_map[tmp_r] | (max_delta & 0xf00 ? SRC2_IMM : 0)));
1593     return SLJIT_SUCCESS;
1594     }
1595    
1596     static int emit_op(struct sljit_compiler *compiler, int op, int inp_flags,
1597     int dst, sljit_w dstw,
1598     int src1, sljit_w src1w,
1599     int src2, sljit_w src2w)
1600     {
1601     /* arg1 goes to TMP_REG1 or src reg
1602     arg2 goes to TMP_REG2, imm or src reg
1603     TMP_REG3 can be used for caching
1604     result goes to TMP_REG2, so put result can use TMP_REG1 and TMP_REG3. */
1605    
1606     /* We prefers register and simple consts. */
1607     int dst_r;
1608     int src1_r;
1609     int src2_r = 0;
1610     int sugg_src2_r = TMP_REG2;
1611     int flags = GET_FLAGS(op) ? SET_FLAGS : 0;
1612    
1613     compiler->cache_arg = 0;
1614     compiler->cache_argw = 0;
1615    
1616     /* Destination check. */
1617     if (dst >= SLJIT_TEMPORARY_REG1 && dst <= TMP_REG3) {
1618     dst_r = dst;
1619     flags |= REG_DEST;
1620     if (op >= SLJIT_MOV && op <= SLJIT_MOVU_SI)
1621     sugg_src2_r = dst_r;
1622     }
1623     else if (dst == SLJIT_UNUSED) {
1624     if (op >= SLJIT_MOV && op <= SLJIT_MOVU_SI && !(src2 & SLJIT_MEM))
1625     return SLJIT_SUCCESS;
1626     dst_r = TMP_REG2;
1627     }
1628     else {
1629     SLJIT_ASSERT(dst & SLJIT_MEM);
1630     if (getput_arg_fast(compiler, inp_flags | ARG_TEST, TMP_REG2, dst, dstw)) {
1631     flags |= FAST_DEST;
1632     dst_r = TMP_REG2;
1633     }
1634     else {
1635     flags |= SLOW_DEST;
1636     dst_r = 0;
1637     }
1638     }
1639    
1640     /* Source 1. */
1641     if (src1 >= SLJIT_TEMPORARY_REG1 && src1 <= TMP_REG3)
1642     src1_r = src1;
1643     else if (src2 >= SLJIT_TEMPORARY_REG1 && src2 <= TMP_REG3) {
1644     flags |= ARGS_SWAPPED;
1645     src1_r = src2;
1646     src2 = src1;
1647     src2w = src1w;
1648     }
1649     else {
1650     if ((inp_flags & ALLOW_ANY_IMM) && (src1 & SLJIT_IMM)) {
1651     /* The second check will generate a hit. */
1652     src2_r = get_immediate(src1w);
1653     if (src2_r) {
1654     flags |= ARGS_SWAPPED;
1655     src1 = src2;
1656     src1w = src2w;
1657     }
1658     if (inp_flags & ALLOW_INV_IMM) {
1659     src2_r = get_immediate(~src1w);
1660     if (src2_r) {
1661     flags |= ARGS_SWAPPED | INV_IMM;
1662     src1 = src2;
1663     src1w = src2w;
1664     }
1665     }
1666     }
1667    
1668     src1_r = 0;
1669     if (getput_arg_fast(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w)) {
1670     FAIL_IF(compiler->error);
1671     src1_r = TMP_REG1;
1672     }
1673     }
1674    
1675     /* Source 2. */
1676     if (src2_r == 0) {
1677     if (src2 >= SLJIT_TEMPORARY_REG1 && src2 <= TMP_REG3) {
1678     src2_r = src2;
1679     flags |= REG_SOURCE;
1680     if (!(flags & REG_DEST) && op >= SLJIT_MOV && op <= SLJIT_MOVU_SI)
1681     dst_r = src2_r;
1682     }
1683     else do { /* do { } while(0) is used because of breaks. */
1684     if ((inp_flags & ALLOW_ANY_IMM) && (src2 & SLJIT_IMM)) {
1685     src2_r = get_immediate(src2w);
1686     if (src2_r)
1687     break;
1688     if (inp_flags & ALLOW_INV_IMM) {
1689     src2_r = get_immediate(~src2w);
1690     if (src2_r) {
1691     flags |= INV_IMM;
1692     break;
1693     }
1694     }
1695     }
1696    
1697     /* src2_r is 0. */
1698     if (getput_arg_fast(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w)) {
1699     FAIL_IF(compiler->error);
1700     src2_r = sugg_src2_r;
1701     }
1702     } while (0);
1703     }
1704    
1705     /* src1_r, src2_r and dst_r can be zero (=unprocessed) or non-zero.
1706     If they are zero, they must not be registers. */
1707     if (src1_r == 0 && src2_r == 0 && dst_r == 0) {
1708     if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
1709     SLJIT_ASSERT(!(flags & ARGS_SWAPPED));
1710     flags |= ARGS_SWAPPED;
1711     FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src2, src2w, src1, src1w));
1712     FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG2, src1, src1w, dst, dstw));
1713     }
1714     else {
1715     FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, src2, src2w));
1716     FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG2, src2, src2w, dst, dstw));
1717     }
1718     src1_r = TMP_REG1;
1719     src2_r = TMP_REG2;
1720     }
1721     else if (src1_r == 0 && src2_r == 0) {
1722     FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, src2, src2w));
1723     src1_r = TMP_REG1;
1724     }
1725     else if (src1_r == 0 && dst_r == 0) {
1726     FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, dst, dstw));
1727     src1_r = TMP_REG1;
1728     }
1729     else if (src2_r == 0 && dst_r == 0) {
1730     FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w, dst, dstw));
1731     src2_r = sugg_src2_r;
1732     }
1733    
1734     if (dst_r == 0)
1735     dst_r = TMP_REG2;
1736    
1737     if (src1_r == 0) {
1738     FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, 0, 0));
1739     src1_r = TMP_REG1;
1740     }
1741    
1742     if (src2_r == 0) {
1743     FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w, 0, 0));
1744     src2_r = sugg_src2_r;
1745     }
1746    
1747     FAIL_IF(emit_single_op(compiler, op, flags, dst_r, src1_r, src2_r));
1748    
1749     if (flags & (FAST_DEST | SLOW_DEST)) {
1750     if (flags & FAST_DEST)
1751     FAIL_IF(getput_arg_fast(compiler, inp_flags, dst_r, dst, dstw));
1752     else
1753     FAIL_IF(getput_arg(compiler, inp_flags, dst_r, dst, dstw, 0, 0));
1754     }
1755     return SLJIT_SUCCESS;
1756     }
1757    
1758 zherczeg 740 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op0(struct sljit_compiler *compiler, int op)
1759 ph10 662 {
1760     CHECK_ERROR();
1761     check_sljit_emit_op0(compiler, op);
1762    
1763     op = GET_OPCODE(op);
1764     switch (op) {
1765     case SLJIT_BREAKPOINT:
1766     EMIT_INSTRUCTION(DEBUGGER);
1767     break;
1768     case SLJIT_NOP:
1769     EMIT_INSTRUCTION(NOP);
1770     break;
1771     }
1772    
1773     return SLJIT_SUCCESS;
1774     }
1775    
1776 zherczeg 740 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op1(struct sljit_compiler *compiler, int op,
1777 ph10 662 int dst, sljit_w dstw,
1778     int src, sljit_w srcw)
1779     {
1780     CHECK_ERROR();
1781     check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw);
1782    
1783     switch (GET_OPCODE(op)) {
1784     case SLJIT_MOV:
1785     case SLJIT_MOV_UI:
1786     case SLJIT_MOV_SI:
1787     return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, src, srcw);
1788    
1789     case SLJIT_MOV_UB:
1790     return emit_op(compiler, SLJIT_MOV_UB, ALLOW_ANY_IMM | BYTE_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned char)srcw : srcw);
1791    
1792     case SLJIT_MOV_SB:
1793     return emit_op(compiler, SLJIT_MOV_SB, ALLOW_ANY_IMM | SIGNED_DATA | BYTE_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed char)srcw : srcw);
1794    
1795     case SLJIT_MOV_UH:
1796     return emit_op(compiler, SLJIT_MOV_UH, ALLOW_ANY_IMM | HALF_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned short)srcw : srcw);
1797    
1798     case SLJIT_MOV_SH:
1799     return emit_op(compiler, SLJIT_MOV_SH, ALLOW_ANY_IMM | SIGNED_DATA | HALF_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed short)srcw : srcw);
1800    
1801     case SLJIT_MOVU:
1802     case SLJIT_MOVU_UI:
1803     case SLJIT_MOVU_SI:
1804     return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1805    
1806     case SLJIT_MOVU_UB:
1807     return emit_op(compiler, SLJIT_MOV_UB, ALLOW_ANY_IMM | BYTE_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned char)srcw : srcw);
1808    
1809     case SLJIT_MOVU_SB:
1810     return emit_op(compiler, SLJIT_MOV_SB, ALLOW_ANY_IMM | SIGNED_DATA | BYTE_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed char)srcw : srcw);
1811    
1812     case SLJIT_MOVU_UH:
1813     return emit_op(compiler, SLJIT_MOV_UH, ALLOW_ANY_IMM | HALF_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned short)srcw : srcw);
1814    
1815     case SLJIT_MOVU_SH:
1816     return emit_op(compiler, SLJIT_MOV_SH, ALLOW_ANY_IMM | SIGNED_DATA | HALF_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed short)srcw : srcw);
1817    
1818     case SLJIT_NOT:
1819     return emit_op(compiler, op, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, src, srcw);
1820    
1821     case SLJIT_NEG:
1822     #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) || (defined SLJIT_DEBUG && SLJIT_DEBUG)
1823     compiler->skip_checks = 1;
1824     #endif
1825     return sljit_emit_op2(compiler, SLJIT_SUB | GET_FLAGS(op), dst, dstw, SLJIT_IMM, 0, src, srcw);
1826    
1827     case SLJIT_CLZ:
1828     return emit_op(compiler, op, 0, dst, dstw, TMP_REG1, 0, src, srcw);
1829     }
1830    
1831     return SLJIT_SUCCESS;
1832     }
1833    
1834 zherczeg 740 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op2(struct sljit_compiler *compiler, int op,
1835 ph10 662 int dst, sljit_w dstw,
1836     int src1, sljit_w src1w,
1837     int src2, sljit_w src2w)
1838     {
1839     CHECK_ERROR();
1840     check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w);
1841    
1842     switch (GET_OPCODE(op)) {
1843     case SLJIT_ADD:
1844     case SLJIT_ADDC:
1845     case SLJIT_SUB:
1846     case SLJIT_SUBC:
1847     case SLJIT_OR:
1848     case SLJIT_XOR:
1849     return emit_op(compiler, op, ALLOW_IMM, dst, dstw, src1, src1w, src2, src2w);
1850    
1851     case SLJIT_MUL:
1852     return emit_op(compiler, op, 0, dst, dstw, src1, src1w, src2, src2w);
1853    
1854     case SLJIT_AND:
1855     return emit_op(compiler, op, ALLOW_ANY_IMM, dst, dstw, src1, src1w, src2, src2w);
1856    
1857     case SLJIT_SHL:
1858     case SLJIT_LSHR:
1859     case SLJIT_ASHR:
1860     if (src2 & SLJIT_IMM) {
1861     compiler->shift_imm = src2w & 0x1f;
1862     return emit_op(compiler, op, 0, dst, dstw, TMP_REG1, 0, src1, src1w);
1863     }
1864     else {
1865     compiler->shift_imm = 0x20;
1866     return emit_op(compiler, op, 0, dst, dstw, src1, src1w, src2, src2w);
1867     }
1868     }
1869    
1870     return SLJIT_SUCCESS;
1871     }
1872    
1873     /* --------------------------------------------------------------------- */
1874     /* Floating point operators */
1875     /* --------------------------------------------------------------------- */
1876    
1877     #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1878    
1879     /* 0 - no fpu
1880     1 - vfp */
1881     static int arm_fpu_type = -1;
1882    
1883     static void init_compiler()
1884     {
1885     if (arm_fpu_type != -1)
1886     return;
1887    
1888     /* TODO: Only the OS can help to determine the correct fpu type. */
1889     arm_fpu_type = 1;
1890     }
1891    
1892 zherczeg 740 SLJIT_API_FUNC_ATTRIBUTE int sljit_is_fpu_available(void)
1893 ph10 662 {
1894     if (arm_fpu_type == -1)
1895     init_compiler();
1896     return arm_fpu_type;
1897     }
1898    
1899     #else
1900    
1901     #define arm_fpu_type 1
1902    
1903 zherczeg 740 SLJIT_API_FUNC_ATTRIBUTE int sljit_is_fpu_available(void)
1904 ph10 662 {
1905     /* Always available. */
1906     return 1;
1907     }
1908    
1909     #endif
1910    
1911     #define EMIT_FPU_DATA_TRANSFER(add, load, base, freg, offs) \
1912     (VSTR | ((add) << 23) | ((load) << 20) | (reg_map[base] << 16) | (freg << 12) | (offs))
1913     #define EMIT_FPU_OPERATION(opcode, dst, src1, src2) \
1914     ((opcode) | ((dst) << 12) | (src1) | ((src2) << 16))
1915    
1916     static int emit_fpu_data_transfer(struct sljit_compiler *compiler, int fpu_reg, int load, int arg, sljit_w argw)
1917     {
1918     SLJIT_ASSERT(arg & SLJIT_MEM);
1919    
1920     /* Fast loads and stores. */
1921     if ((arg & 0xf) && !(arg & 0xf0) && (argw & 0x3) == 0) {
1922     if (argw >= 0 && argw <= 0x3ff) {
1923     EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, arg & 0xf, fpu_reg, argw >> 2));
1924     return SLJIT_SUCCESS;
1925     }
1926     if (argw < 0 && argw >= -0x3ff) {
1927     EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(0, load, arg & 0xf, fpu_reg, (-argw) >> 2));
1928     return SLJIT_SUCCESS;
1929     }
1930     if (argw >= 0 && argw <= 0x3ffff) {
1931     SLJIT_ASSERT(get_immediate(argw & 0x3fc00));
1932     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG1, arg & 0xf, get_immediate(argw & 0x3fc00)));
1933     argw &= 0x3ff;
1934     EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG1, fpu_reg, argw >> 2));
1935     return SLJIT_SUCCESS;
1936     }
1937     if (argw < 0 && argw >= -0x3ffff) {
1938     argw = -argw;
1939     SLJIT_ASSERT(get_immediate(argw & 0x3fc00));
1940     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(SUB_DP, 0, TMP_REG1, arg & 0xf, get_immediate(argw & 0x3fc00)));
1941     argw &= 0x3ff;
1942     EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(0, load, TMP_REG1, fpu_reg, argw >> 2));
1943     return SLJIT_SUCCESS;
1944     }
1945     }
1946    
1947     if (arg & 0xf0) {
1948     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG1, arg & 0xf, RM((arg >> 4) & 0xf) | ((argw & 0x3) << 7)));
1949     EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG1, fpu_reg, 0));
1950     return SLJIT_SUCCESS;
1951     }
1952    
1953     if (compiler->cache_arg == arg && ((argw - compiler->cache_argw) & 0x3) == 0) {
1954     if (((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= 0x3ff) {
1955     EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG3, fpu_reg, (argw - compiler->cache_argw) >> 2));
1956     return SLJIT_SUCCESS;
1957     }
1958     if (((sljit_uw)compiler->cache_argw - (sljit_uw)argw) <= 0x3ff) {
1959     EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(0, load, TMP_REG3, fpu_reg, (compiler->cache_argw - argw) >> 2));
1960     return SLJIT_SUCCESS;
1961     }
1962     }
1963    
1964     compiler->cache_arg = arg;
1965     compiler->cache_argw = argw;
1966     if (arg & 0xf) {
1967     FAIL_IF(load_immediate(compiler, TMP_REG1, argw));
1968     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG3, arg & 0xf, reg_map[TMP_REG1]));
1969     }
1970     else
1971     FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1972    
1973     EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG3, fpu_reg, 0));
1974     return SLJIT_SUCCESS;
1975     }
1976    
1977 zherczeg 740 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fop1(struct sljit_compiler *compiler, int op,
1978 ph10 662 int dst, sljit_w dstw,
1979     int src, sljit_w srcw)
1980     {
1981     int dst_freg;
1982    
1983     CHECK_ERROR();
1984     check_sljit_emit_fop1(compiler, op, dst, dstw, src, srcw);
1985    
1986     compiler->cache_arg = 0;
1987     compiler->cache_argw = 0;
1988    
1989     if (GET_OPCODE(op) == SLJIT_FCMP) {
1990     if (dst > SLJIT_FLOAT_REG4) {
1991     FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG1, 1, dst, dstw));
1992     dst = TMP_FREG1;
1993     }
1994     if (src > SLJIT_FLOAT_REG4) {
1995     FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG2, 1, src, srcw));
1996     src = TMP_FREG2;
1997     }
1998     EMIT_INSTRUCTION(VCMP_F64 | (dst << 12) | src);
1999     EMIT_INSTRUCTION(VMRS);
2000     return SLJIT_SUCCESS;
2001     }
2002    
2003     dst_freg = (dst > SLJIT_FLOAT_REG4) ? TMP_FREG1 : dst;
2004    
2005     if (src > SLJIT_FLOAT_REG4) {
2006     FAIL_IF(emit_fpu_data_transfer(compiler, dst_freg, 1, src, srcw));
2007     src = dst_freg;
2008     }
2009    
2010     switch (op) {
2011     case SLJIT_FMOV:
2012     if (src != dst_freg && dst_freg != TMP_FREG1)
2013     EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VMOV_F64, dst_freg, src, 0));
2014     break;
2015     case SLJIT_FNEG:
2016     EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VNEG_F64, dst_freg, src, 0));
2017     break;
2018     case SLJIT_FABS:
2019     EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VABS_F64, dst_freg, src, 0));
2020     break;
2021     }
2022    
2023     if (dst_freg == TMP_FREG1)
2024     FAIL_IF(emit_fpu_data_transfer(compiler, src, 0, dst, dstw));
2025    
2026     return SLJIT_SUCCESS;
2027     }
2028    
2029 zherczeg 740 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fop2(struct sljit_compiler *compiler, int op,
2030 ph10 662 int dst, sljit_w dstw,
2031     int src1, sljit_w src1w,
2032     int src2, sljit_w src2w)
2033     {
2034     int dst_freg;
2035    
2036     CHECK_ERROR();
2037     check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w);
2038    
2039     compiler->cache_arg = 0;
2040     compiler->cache_argw = 0;
2041    
2042     dst_freg = (dst > SLJIT_FLOAT_REG4) ? TMP_FREG1 : dst;
2043    
2044     if (src2 > SLJIT_FLOAT_REG4) {
2045     FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG2, 1, src2, src2w));
2046     src2 = TMP_FREG2;
2047     }
2048    
2049     if (src1 > SLJIT_FLOAT_REG4) {
2050     FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG1, 1, src1, src1w));
2051     src1 = TMP_FREG1;
2052     }
2053    
2054     switch (op) {
2055     case SLJIT_FADD:
2056     EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VADD_F64, dst_freg, src2, src1));
2057     break;
2058    
2059     case SLJIT_FSUB:
2060     EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VSUB_F64, dst_freg, src2, src1));
2061     break;
2062    
2063     case SLJIT_FMUL:
2064     EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VMUL_F64, dst_freg, src2, src1));
2065     break;
2066    
2067     case SLJIT_FDIV:
2068     EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VDIV_F64, dst_freg, src2, src1));
2069     break;
2070     }
2071    
2072     if (dst_freg == TMP_FREG1)
2073     FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG1, 0, dst, dstw));
2074    
2075     return SLJIT_SUCCESS;
2076     }
2077    
2078     /* --------------------------------------------------------------------- */
2079     /* Other instructions */
2080     /* --------------------------------------------------------------------- */
2081    
2082 zherczeg 740 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fast_enter(struct sljit_compiler *compiler, int dst, sljit_w dstw, int args, int temporaries, int generals, int local_size)
2083 ph10 662 {
2084     int size;
2085    
2086     CHECK_ERROR();
2087     check_sljit_emit_fast_enter(compiler, dst, dstw, args, temporaries, generals, local_size);
2088    
2089     compiler->temporaries = temporaries;
2090     compiler->generals = generals;
2091    
2092     size = (1 + generals) * sizeof(sljit_uw);
2093     if (temporaries >= 4)
2094     size += (temporaries - 3) * sizeof(sljit_uw);
2095     local_size += size;
2096     local_size = (local_size + 7) & ~7;
2097     local_size -= size;
2098     compiler->local_size = local_size;
2099    
2100     if (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS)
2101     return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, RM(TMP_REG3)));
2102     else if (dst & SLJIT_MEM) {
2103     if (getput_arg_fast(compiler, WORD_DATA, TMP_REG3, dst, dstw))
2104     return compiler->error;
2105     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG2, SLJIT_UNUSED, RM(TMP_REG3)));
2106     compiler->cache_arg = 0;
2107     compiler->cache_argw = 0;
2108     return getput_arg(compiler, WORD_DATA, TMP_REG2, dst, dstw, 0, 0);
2109     }
2110    
2111     return SLJIT_SUCCESS;
2112     }
2113    
2114 zherczeg 740 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fast_return(struct sljit_compiler *compiler, int src, sljit_w srcw)
2115 ph10 662 {
2116     CHECK_ERROR();
2117     check_sljit_emit_fast_return(compiler, src, srcw);
2118    
2119     if (src >= SLJIT_TEMPORARY_REG1 && src <= SLJIT_NO_REGISTERS)
2120     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(src)));
2121     else if (src & SLJIT_MEM) {
2122     if (getput_arg_fast(compiler, WORD_DATA | LOAD_DATA, TMP_REG3, src, srcw))
2123     FAIL_IF(compiler->error);
2124     else {
2125     compiler->cache_arg = 0;
2126     compiler->cache_argw = 0;
2127     FAIL_IF(getput_arg(compiler, WORD_DATA | LOAD_DATA, TMP_REG2, src, srcw, 0, 0));
2128     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(TMP_REG2)));
2129     }
2130     }
2131     else if (src & SLJIT_IMM)
2132     FAIL_IF(load_immediate(compiler, TMP_REG3, srcw));
2133     return push_inst(compiler, BLX | RM(TMP_REG3));
2134     }
2135    
2136     /* --------------------------------------------------------------------- */
2137     /* Conditional instructions */
2138     /* --------------------------------------------------------------------- */
2139    
2140     static sljit_uw get_cc(int type)
2141     {
2142     switch (type) {
2143     case SLJIT_C_EQUAL:
2144     case SLJIT_C_MUL_NOT_OVERFLOW:
2145     case SLJIT_C_FLOAT_EQUAL:
2146     return 0x00000000;
2147    
2148     case SLJIT_C_NOT_EQUAL:
2149     case SLJIT_C_MUL_OVERFLOW:
2150     case SLJIT_C_FLOAT_NOT_EQUAL:
2151     return 0x10000000;
2152    
2153     case SLJIT_C_LESS:
2154     case SLJIT_C_FLOAT_LESS:
2155     return 0x30000000;
2156    
2157     case SLJIT_C_GREATER_EQUAL:
2158     case SLJIT_C_FLOAT_GREATER_EQUAL:
2159     return 0x20000000;
2160    
2161     case SLJIT_C_GREATER:
2162     case SLJIT_C_FLOAT_GREATER:
2163     return 0x80000000;
2164    
2165     case SLJIT_C_LESS_EQUAL:
2166     case SLJIT_C_FLOAT_LESS_EQUAL:
2167     return 0x90000000;
2168    
2169     case SLJIT_C_SIG_LESS:
2170     return 0xb0000000;
2171    
2172     case SLJIT_C_SIG_GREATER_EQUAL:
2173     return 0xa0000000;
2174    
2175     case SLJIT_C_SIG_GREATER:
2176     return 0xc0000000;
2177    
2178     case SLJIT_C_SIG_LESS_EQUAL:
2179     return 0xd0000000;
2180    
2181     case SLJIT_C_OVERFLOW:
2182     case SLJIT_C_FLOAT_NAN:
2183     return 0x60000000;
2184    
2185     case SLJIT_C_NOT_OVERFLOW:
2186     case SLJIT_C_FLOAT_NOT_NAN:
2187     return 0x70000000;
2188    
2189     default: /* SLJIT_JUMP */
2190     return 0xe0000000;
2191     }
2192     }
2193    
2194 zherczeg 740 SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler)
2195 ph10 662 {
2196     struct sljit_label *label;
2197    
2198     CHECK_ERROR_PTR();
2199     check_sljit_emit_label(compiler);
2200    
2201     if (compiler->last_label && compiler->last_label->size == compiler->size)
2202     return compiler->last_label;
2203    
2204     label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label));
2205     PTR_FAIL_IF(!label);
2206     set_label(label, compiler);
2207     return label;
2208     }
2209    
2210 zherczeg 740 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, int type)
2211 ph10 662 {
2212     struct sljit_jump *jump;
2213    
2214     CHECK_ERROR_PTR();
2215     check_sljit_emit_jump(compiler, type);
2216    
2217     jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
2218     PTR_FAIL_IF(!jump);
2219     set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
2220     type &= 0xff;
2221    
2222     /* In ARM, we don't need to touch the arguments. */
2223     #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2224 zherczeg 722 if (type >= SLJIT_FAST_CALL)
2225 ph10 662 PTR_FAIL_IF(prepare_blx(compiler));
2226     PTR_FAIL_IF(push_inst_with_unique_literal(compiler, ((EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0,
2227     type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, TMP_PC, 0)) & ~COND_MASK) | get_cc(type), 0));
2228    
2229     if (jump->flags & SLJIT_REWRITABLE_JUMP) {
2230     jump->addr = compiler->size;
2231     compiler->patches++;
2232     }
2233    
2234 zherczeg 722 if (type >= SLJIT_FAST_CALL) {
2235 ph10 662 jump->flags |= IS_BL;
2236     PTR_FAIL_IF(emit_blx(compiler));
2237     }
2238    
2239     if (!(jump->flags & SLJIT_REWRITABLE_JUMP))
2240     jump->addr = compiler->size;
2241     #else
2242 zherczeg 722 if (type >= SLJIT_FAST_CALL)
2243 ph10 662 jump->flags |= IS_BL;
2244     PTR_FAIL_IF(emit_imm(compiler, TMP_REG1, 0));
2245 zherczeg 722 PTR_FAIL_IF(push_inst(compiler, (((type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1)) & ~COND_MASK) | get_cc(type)));
2246 ph10 662 jump->addr = compiler->size;
2247     #endif
2248     return jump;
2249     }
2250    
2251 zherczeg 740 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_ijump(struct sljit_compiler *compiler, int type, int src, sljit_w srcw)
2252 ph10 662 {
2253     struct sljit_jump *jump;
2254    
2255     CHECK_ERROR();
2256     check_sljit_emit_ijump(compiler, type, src, srcw);
2257    
2258     /* In ARM, we don't need to touch the arguments. */
2259     if (src & SLJIT_IMM) {
2260     jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
2261     FAIL_IF(!jump);
2262 zherczeg 722 set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_BL : 0));
2263 ph10 662 jump->u.target = srcw;
2264    
2265     #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2266 zherczeg 722 if (type >= SLJIT_FAST_CALL)
2267 ph10 662 FAIL_IF(prepare_blx(compiler));
2268     FAIL_IF(push_inst_with_unique_literal(compiler, EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0, type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, TMP_PC, 0), 0));
2269 zherczeg 722 if (type >= SLJIT_FAST_CALL)
2270 ph10 662 FAIL_IF(emit_blx(compiler));
2271     #else
2272     FAIL_IF(emit_imm(compiler, TMP_REG1, 0));
2273 zherczeg 722 FAIL_IF(push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1)));
2274 ph10 662 #endif
2275     jump->addr = compiler->size;
2276     }
2277     else {
2278     if (src >= SLJIT_TEMPORARY_REG1 && src <= SLJIT_NO_REGISTERS)
2279     return push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(src));
2280    
2281     SLJIT_ASSERT(src & SLJIT_MEM);
2282     FAIL_IF(emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, TMP_REG2, 0, TMP_REG1, 0, src, srcw));
2283     return push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG2));
2284     }
2285    
2286     return SLJIT_SUCCESS;
2287     }
2288    
2289 zherczeg 740 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_cond_value(struct sljit_compiler *compiler, int op, int dst, sljit_w dstw, int type)
2290 ph10 662 {
2291     int reg;
2292     sljit_uw cc;
2293    
2294     CHECK_ERROR();
2295     check_sljit_emit_cond_value(compiler, op, dst, dstw, type);
2296    
2297     if (dst == SLJIT_UNUSED)
2298     return SLJIT_SUCCESS;
2299    
2300     cc = get_cc(type);
2301     if (GET_OPCODE(op) == SLJIT_OR) {
2302     if (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) {
2303     EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(ORR_DP, 0, dst, dst, SRC2_IMM | 1) & ~COND_MASK) | cc);
2304     if (op & SLJIT_SET_E)
2305     return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, SET_FLAGS, TMP_REG1, SLJIT_UNUSED, RM(dst)));
2306     return SLJIT_SUCCESS;
2307     }
2308    
2309     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, SRC2_IMM | 0));
2310     EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, SRC2_IMM | 1) & ~COND_MASK) | cc);
2311     #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) || (defined SLJIT_DEBUG && SLJIT_DEBUG)
2312     compiler->skip_checks = 1;
2313     #endif
2314     return emit_op(compiler, op, ALLOW_IMM, dst, dstw, TMP_REG1, 0, dst, dstw);
2315     }
2316    
2317     reg = (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) ? dst : TMP_REG2;
2318    
2319     EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, SRC2_IMM | 0));
2320     EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, SRC2_IMM | 1) & ~COND_MASK) | cc);
2321    
2322     if (reg == TMP_REG2)
2323     return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, TMP_REG2, 0);
2324     return SLJIT_SUCCESS;
2325     }
2326    
2327 zherczeg 740 SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, int dst, sljit_w dstw, sljit_w init_value)
2328 ph10 662 {
2329     struct sljit_const *const_;
2330     int reg;
2331    
2332     CHECK_ERROR_PTR();
2333     check_sljit_emit_const(compiler, dst, dstw, init_value);
2334    
2335     const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const));
2336     PTR_FAIL_IF(!const_);
2337    
2338     reg = (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) ? dst : TMP_REG2;
2339    
2340     #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2341     PTR_FAIL_IF(push_inst_with_unique_literal(compiler, EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0, reg, TMP_PC, 0), init_value));
2342     compiler->patches++;
2343     #else
2344     PTR_FAIL_IF(emit_imm(compiler, reg, init_value));
2345     #endif
2346     set_const(const_, compiler);
2347    
2348     if (reg == TMP_REG2 && dst != SLJIT_UNUSED)
2349     if (emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, TMP_REG2, 0))
2350     return NULL;
2351     return const_;
2352     }
2353    
2354 zherczeg 740 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr)
2355 ph10 662 {
2356     inline_set_jump_addr(addr, new_addr, 1);
2357     }
2358    
2359 zherczeg 740 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_w new_constant)
2360 ph10 662 {
2361     inline_set_const(addr, new_constant, 1);
2362     }

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