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Record pcre3 (2:8.38-1) in archive suite sid
[pcre3.git] / sljit / sljitNativeMIPS_32.c
1 /*
2  *    Stack-less Just-In-Time compiler
3  *
4  *    Copyright 2009-2012 Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without modification, are
7  * permitted provided that the following conditions are met:
8  *
9  *   1. Redistributions of source code must retain the above copyright notice, this list of
10  *      conditions and the following disclaimer.
11  *
12  *   2. Redistributions in binary form must reproduce the above copyright notice, this list
13  *      of conditions and the following disclaimer in the documentation and/or other materials
14  *      provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
17  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
19  * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
21  * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
22  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
24  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  */
26
27 /* mips 32-bit arch dependent functions. */
28
29 static sljit_si load_immediate(struct sljit_compiler *compiler, sljit_si dst_ar, sljit_sw imm)
30 {
31         if (!(imm & ~0xffff))
32                 return push_inst(compiler, ORI | SA(0) | TA(dst_ar) | IMM(imm), dst_ar);
33
34         if (imm < 0 && imm >= SIMM_MIN)
35                 return push_inst(compiler, ADDIU | SA(0) | TA(dst_ar) | IMM(imm), dst_ar);
36
37         FAIL_IF(push_inst(compiler, LUI | TA(dst_ar) | IMM(imm >> 16), dst_ar));
38         return (imm & 0xffff) ? push_inst(compiler, ORI | SA(dst_ar) | TA(dst_ar) | IMM(imm), dst_ar) : SLJIT_SUCCESS;
39 }
40
41 #define EMIT_LOGICAL(op_imm, op_norm) \
42         if (flags & SRC2_IMM) { \
43                 if (op & SLJIT_SET_E) \
44                         FAIL_IF(push_inst(compiler, op_imm | S(src1) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG)); \
45                 if (CHECK_FLAGS(SLJIT_SET_E)) \
46                         FAIL_IF(push_inst(compiler, op_imm | S(src1) | T(dst) | IMM(src2), DR(dst))); \
47         } \
48         else { \
49                 if (op & SLJIT_SET_E) \
50                         FAIL_IF(push_inst(compiler, op_norm | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG)); \
51                 if (CHECK_FLAGS(SLJIT_SET_E)) \
52                         FAIL_IF(push_inst(compiler, op_norm | S(src1) | T(src2) | D(dst), DR(dst))); \
53         }
54
55 #define EMIT_SHIFT(op_imm, op_v) \
56         if (flags & SRC2_IMM) { \
57                 if (op & SLJIT_SET_E) \
58                         FAIL_IF(push_inst(compiler, op_imm | T(src1) | DA(EQUAL_FLAG) | SH_IMM(src2), EQUAL_FLAG)); \
59                 if (CHECK_FLAGS(SLJIT_SET_E)) \
60                         FAIL_IF(push_inst(compiler, op_imm | T(src1) | D(dst) | SH_IMM(src2), DR(dst))); \
61         } \
62         else { \
63                 if (op & SLJIT_SET_E) \
64                         FAIL_IF(push_inst(compiler, op_v | S(src2) | T(src1) | DA(EQUAL_FLAG), EQUAL_FLAG)); \
65                 if (CHECK_FLAGS(SLJIT_SET_E)) \
66                         FAIL_IF(push_inst(compiler, op_v | S(src2) | T(src1) | D(dst), DR(dst))); \
67         }
68
69 static SLJIT_INLINE sljit_si emit_single_op(struct sljit_compiler *compiler, sljit_si op, sljit_si flags,
70         sljit_si dst, sljit_si src1, sljit_sw src2)
71 {
72         switch (GET_OPCODE(op)) {
73         case SLJIT_MOV:
74         case SLJIT_MOV_UI:
75         case SLJIT_MOV_SI:
76         case SLJIT_MOV_P:
77                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
78                 if (dst != src2)
79                         return push_inst(compiler, ADDU | S(src2) | TA(0) | D(dst), DR(dst));
80                 return SLJIT_SUCCESS;
81
82         case SLJIT_MOV_UB:
83         case SLJIT_MOV_SB:
84                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
85                 if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
86                         if (op == SLJIT_MOV_SB) {
87 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
88                                 return push_inst(compiler, SEB | T(src2) | D(dst), DR(dst));
89 #else
90                                 FAIL_IF(push_inst(compiler, SLL | T(src2) | D(dst) | SH_IMM(24), DR(dst)));
91                                 return push_inst(compiler, SRA | T(dst) | D(dst) | SH_IMM(24), DR(dst));
92 #endif
93                         }
94                         return push_inst(compiler, ANDI | S(src2) | T(dst) | IMM(0xff), DR(dst));
95                 }
96                 else if (dst != src2)
97                         SLJIT_ASSERT_STOP();
98                 return SLJIT_SUCCESS;
99
100         case SLJIT_MOV_UH:
101         case SLJIT_MOV_SH:
102                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
103                 if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
104                         if (op == SLJIT_MOV_SH) {
105 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
106                                 return push_inst(compiler, SEH | T(src2) | D(dst), DR(dst));
107 #else
108                                 FAIL_IF(push_inst(compiler, SLL | T(src2) | D(dst) | SH_IMM(16), DR(dst)));
109                                 return push_inst(compiler, SRA | T(dst) | D(dst) | SH_IMM(16), DR(dst));
110 #endif
111                         }
112                         return push_inst(compiler, ANDI | S(src2) | T(dst) | IMM(0xffff), DR(dst));
113                 }
114                 else if (dst != src2)
115                         SLJIT_ASSERT_STOP();
116                 return SLJIT_SUCCESS;
117
118         case SLJIT_NOT:
119                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
120                 if (op & SLJIT_SET_E)
121                         FAIL_IF(push_inst(compiler, NOR | S(src2) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
122                 if (CHECK_FLAGS(SLJIT_SET_E))
123                         FAIL_IF(push_inst(compiler, NOR | S(src2) | T(src2) | D(dst), DR(dst)));
124                 return SLJIT_SUCCESS;
125
126         case SLJIT_CLZ:
127                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
128 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
129                 if (op & SLJIT_SET_E)
130                         FAIL_IF(push_inst(compiler, CLZ | S(src2) | TA(EQUAL_FLAG) | DA(EQUAL_FLAG), EQUAL_FLAG));
131                 if (CHECK_FLAGS(SLJIT_SET_E))
132                         FAIL_IF(push_inst(compiler, CLZ | S(src2) | T(dst) | D(dst), DR(dst)));
133 #else
134                 if (SLJIT_UNLIKELY(flags & UNUSED_DEST)) {
135                         FAIL_IF(push_inst(compiler, SRL | T(src2) | DA(EQUAL_FLAG) | SH_IMM(31), EQUAL_FLAG));
136                         return push_inst(compiler, XORI | SA(EQUAL_FLAG) | TA(EQUAL_FLAG) | IMM(1), EQUAL_FLAG);
137                 }
138                 /* Nearly all instructions are unmovable in the following sequence. */
139                 FAIL_IF(push_inst(compiler, ADDU | S(src2) | TA(0) | D(TMP_REG1), DR(TMP_REG1)));
140                 /* Check zero. */
141                 FAIL_IF(push_inst(compiler, BEQ | S(TMP_REG1) | TA(0) | IMM(5), UNMOVABLE_INS));
142                 FAIL_IF(push_inst(compiler, ORI | SA(0) | T(dst) | IMM(32), UNMOVABLE_INS));
143                 FAIL_IF(push_inst(compiler, ADDIU | SA(0) | T(dst) | IMM(-1), DR(dst)));
144                 /* Loop for searching the highest bit. */
145                 FAIL_IF(push_inst(compiler, ADDIU | S(dst) | T(dst) | IMM(1), DR(dst)));
146                 FAIL_IF(push_inst(compiler, BGEZ | S(TMP_REG1) | IMM(-2), UNMOVABLE_INS));
147                 FAIL_IF(push_inst(compiler, SLL | T(TMP_REG1) | D(TMP_REG1) | SH_IMM(1), UNMOVABLE_INS));
148                 if (op & SLJIT_SET_E)
149                         return push_inst(compiler, ADDU | S(dst) | TA(0) | DA(EQUAL_FLAG), EQUAL_FLAG);
150 #endif
151                 return SLJIT_SUCCESS;
152
153         case SLJIT_ADD:
154                 if (flags & SRC2_IMM) {
155                         if (op & SLJIT_SET_O) {
156                                 if (src2 >= 0)
157                                         FAIL_IF(push_inst(compiler, OR | S(src1) | T(src1) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
158                                 else
159                                         FAIL_IF(push_inst(compiler, NOR | S(src1) | T(src1) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
160                         }
161                         if (op & SLJIT_SET_E)
162                                 FAIL_IF(push_inst(compiler, ADDIU | S(src1) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG));
163                         if (op & (SLJIT_SET_C | SLJIT_SET_O)) {
164                                 if (src2 >= 0)
165                                         FAIL_IF(push_inst(compiler, ORI | S(src1) | TA(ULESS_FLAG) | IMM(src2), ULESS_FLAG));
166                                 else {
167                                         FAIL_IF(push_inst(compiler, ADDIU | SA(0) | TA(ULESS_FLAG) | IMM(src2), ULESS_FLAG));
168                                         FAIL_IF(push_inst(compiler, OR | S(src1) | TA(ULESS_FLAG) | DA(ULESS_FLAG), ULESS_FLAG));
169                                 }
170                         }
171                         /* dst may be the same as src1 or src2. */
172                         if (CHECK_FLAGS(SLJIT_SET_E))
173                                 FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(src2), DR(dst)));
174                 }
175                 else {
176                         if (op & SLJIT_SET_O)
177                                 FAIL_IF(push_inst(compiler, XOR | S(src1) | T(src2) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
178                         if (op & SLJIT_SET_E)
179                                 FAIL_IF(push_inst(compiler, ADDU | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
180                         if (op & (SLJIT_SET_C | SLJIT_SET_O))
181                                 FAIL_IF(push_inst(compiler, OR | S(src1) | T(src2) | DA(ULESS_FLAG), ULESS_FLAG));
182                         /* dst may be the same as src1 or src2. */
183                         if (CHECK_FLAGS(SLJIT_SET_E))
184                                 FAIL_IF(push_inst(compiler, ADDU | S(src1) | T(src2) | D(dst), DR(dst)));
185                 }
186
187                 /* a + b >= a | b (otherwise, the carry should be set to 1). */
188                 if (op & (SLJIT_SET_C | SLJIT_SET_O))
189                         FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(ULESS_FLAG) | DA(ULESS_FLAG), ULESS_FLAG));
190                 if (!(op & SLJIT_SET_O))
191                         return SLJIT_SUCCESS;
192                 FAIL_IF(push_inst(compiler, SLL | TA(ULESS_FLAG) | D(TMP_REG1) | SH_IMM(31), DR(TMP_REG1)));
193                 FAIL_IF(push_inst(compiler, XOR | S(TMP_REG1) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
194                 FAIL_IF(push_inst(compiler, XOR | S(dst) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
195                 return push_inst(compiler, SLL | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG) | SH_IMM(31), OVERFLOW_FLAG);
196
197         case SLJIT_ADDC:
198                 if (flags & SRC2_IMM) {
199                         if (op & SLJIT_SET_C) {
200                                 if (src2 >= 0)
201                                         FAIL_IF(push_inst(compiler, ORI | S(src1) | TA(OVERFLOW_FLAG) | IMM(src2), OVERFLOW_FLAG));
202                                 else {
203                                         FAIL_IF(push_inst(compiler, ADDIU | SA(0) | TA(OVERFLOW_FLAG) | IMM(src2), OVERFLOW_FLAG));
204                                         FAIL_IF(push_inst(compiler, OR | S(src1) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
205                                 }
206                         }
207                         FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(src2), DR(dst)));
208                 } else {
209                         if (op & SLJIT_SET_C)
210                                 FAIL_IF(push_inst(compiler, OR | S(src1) | T(src2) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
211                         /* dst may be the same as src1 or src2. */
212                         FAIL_IF(push_inst(compiler, ADDU | S(src1) | T(src2) | D(dst), DR(dst)));
213                 }
214                 if (op & SLJIT_SET_C)
215                         FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
216
217                 FAIL_IF(push_inst(compiler, ADDU | S(dst) | TA(ULESS_FLAG) | D(dst), DR(dst)));
218                 if (!(op & SLJIT_SET_C))
219                         return SLJIT_SUCCESS;
220
221                 /* Set ULESS_FLAG (dst == 0) && (ULESS_FLAG == 1). */
222                 FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(ULESS_FLAG) | DA(ULESS_FLAG), ULESS_FLAG));
223                 /* Set carry flag. */
224                 return push_inst(compiler, OR | SA(ULESS_FLAG) | TA(OVERFLOW_FLAG) | DA(ULESS_FLAG), ULESS_FLAG);
225
226         case SLJIT_SUB:
227                 if ((flags & SRC2_IMM) && ((op & (SLJIT_SET_U | SLJIT_SET_S)) || src2 == SIMM_MIN)) {
228                         FAIL_IF(push_inst(compiler, ADDIU | SA(0) | T(TMP_REG2) | IMM(src2), DR(TMP_REG2)));
229                         src2 = TMP_REG2;
230                         flags &= ~SRC2_IMM;
231                 }
232
233                 if (flags & SRC2_IMM) {
234                         if (op & SLJIT_SET_O) {
235                                 if (src2 >= 0)
236                                         FAIL_IF(push_inst(compiler, OR | S(src1) | T(src1) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
237                                 else
238                                         FAIL_IF(push_inst(compiler, NOR | S(src1) | T(src1) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
239                         }
240                         if (op & SLJIT_SET_E)
241                                 FAIL_IF(push_inst(compiler, ADDIU | S(src1) | TA(EQUAL_FLAG) | IMM(-src2), EQUAL_FLAG));
242                         if (op & (SLJIT_SET_C | SLJIT_SET_O))
243                                 FAIL_IF(push_inst(compiler, SLTIU | S(src1) | TA(ULESS_FLAG) | IMM(src2), ULESS_FLAG));
244                         /* dst may be the same as src1 or src2. */
245                         if (CHECK_FLAGS(SLJIT_SET_E))
246                                 FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(-src2), DR(dst)));
247                 }
248                 else {
249                         if (op & SLJIT_SET_O)
250                                 FAIL_IF(push_inst(compiler, XOR | S(src1) | T(src2) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
251                         if (op & SLJIT_SET_E)
252                                 FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
253                         if (op & (SLJIT_SET_U | SLJIT_SET_C | SLJIT_SET_O))
254                                 FAIL_IF(push_inst(compiler, SLTU | S(src1) | T(src2) | DA(ULESS_FLAG), ULESS_FLAG));
255                         if (op & SLJIT_SET_U)
256                                 FAIL_IF(push_inst(compiler, SLTU | S(src2) | T(src1) | DA(UGREATER_FLAG), UGREATER_FLAG));
257                         if (op & SLJIT_SET_S) {
258                                 FAIL_IF(push_inst(compiler, SLT | S(src1) | T(src2) | DA(LESS_FLAG), LESS_FLAG));
259                                 FAIL_IF(push_inst(compiler, SLT | S(src2) | T(src1) | DA(GREATER_FLAG), GREATER_FLAG));
260                         }
261                         /* dst may be the same as src1 or src2. */
262                         if (CHECK_FLAGS(SLJIT_SET_E | SLJIT_SET_U | SLJIT_SET_S | SLJIT_SET_C))
263                                 FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | D(dst), DR(dst)));
264                 }
265
266                 if (!(op & SLJIT_SET_O))
267                         return SLJIT_SUCCESS;
268                 FAIL_IF(push_inst(compiler, SLL | TA(ULESS_FLAG) | D(TMP_REG1) | SH_IMM(31), DR(TMP_REG1)));
269                 FAIL_IF(push_inst(compiler, XOR | S(TMP_REG1) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
270                 FAIL_IF(push_inst(compiler, XOR | S(dst) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
271                 return push_inst(compiler, SRL | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG) | SH_IMM(31), OVERFLOW_FLAG);
272
273         case SLJIT_SUBC:
274                 if ((flags & SRC2_IMM) && src2 == SIMM_MIN) {
275                         FAIL_IF(push_inst(compiler, ADDIU | SA(0) | T(TMP_REG2) | IMM(src2), DR(TMP_REG2)));
276                         src2 = TMP_REG2;
277                         flags &= ~SRC2_IMM;
278                 }
279
280                 if (flags & SRC2_IMM) {
281                         if (op & SLJIT_SET_C)
282                                 FAIL_IF(push_inst(compiler, SLTIU | S(src1) | TA(OVERFLOW_FLAG) | IMM(src2), OVERFLOW_FLAG));
283                         /* dst may be the same as src1 or src2. */
284                         FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(-src2), DR(dst)));
285                 }
286                 else {
287                         if (op & SLJIT_SET_C)
288                                 FAIL_IF(push_inst(compiler, SLTU | S(src1) | T(src2) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
289                         /* dst may be the same as src1 or src2. */
290                         FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | D(dst), DR(dst)));
291                 }
292
293                 if (op & SLJIT_SET_C)
294                         FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(ULESS_FLAG) | DA(LESS_FLAG), LESS_FLAG));
295
296                 FAIL_IF(push_inst(compiler, SUBU | S(dst) | TA(ULESS_FLAG) | D(dst), DR(dst)));
297                 return (op & SLJIT_SET_C) ? push_inst(compiler, OR | SA(OVERFLOW_FLAG) | TA(LESS_FLAG) | DA(ULESS_FLAG), ULESS_FLAG) : SLJIT_SUCCESS;
298
299         case SLJIT_MUL:
300                 SLJIT_ASSERT(!(flags & SRC2_IMM));
301                 if (!(op & SLJIT_SET_O)) {
302 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
303                         return push_inst(compiler, MUL | S(src1) | T(src2) | D(dst), DR(dst));
304 #else
305                         FAIL_IF(push_inst(compiler, MULT | S(src1) | T(src2), MOVABLE_INS));
306                         return push_inst(compiler, MFLO | D(dst), DR(dst));
307 #endif
308                 }
309                 FAIL_IF(push_inst(compiler, MULT | S(src1) | T(src2), MOVABLE_INS));
310                 FAIL_IF(push_inst(compiler, MFHI | DA(ULESS_FLAG), ULESS_FLAG));
311                 FAIL_IF(push_inst(compiler, MFLO | D(dst), DR(dst)));
312                 FAIL_IF(push_inst(compiler, SRA | T(dst) | DA(UGREATER_FLAG) | SH_IMM(31), UGREATER_FLAG));
313                 return push_inst(compiler, SUBU | SA(ULESS_FLAG) | TA(UGREATER_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG);
314
315         case SLJIT_AND:
316                 EMIT_LOGICAL(ANDI, AND);
317                 return SLJIT_SUCCESS;
318
319         case SLJIT_OR:
320                 EMIT_LOGICAL(ORI, OR);
321                 return SLJIT_SUCCESS;
322
323         case SLJIT_XOR:
324                 EMIT_LOGICAL(XORI, XOR);
325                 return SLJIT_SUCCESS;
326
327         case SLJIT_SHL:
328                 EMIT_SHIFT(SLL, SLLV);
329                 return SLJIT_SUCCESS;
330
331         case SLJIT_LSHR:
332                 EMIT_SHIFT(SRL, SRLV);
333                 return SLJIT_SUCCESS;
334
335         case SLJIT_ASHR:
336                 EMIT_SHIFT(SRA, SRAV);
337                 return SLJIT_SUCCESS;
338         }
339
340         SLJIT_ASSERT_STOP();
341         return SLJIT_SUCCESS;
342 }
343
344 static SLJIT_INLINE sljit_si emit_const(struct sljit_compiler *compiler, sljit_si dst, sljit_sw init_value)
345 {
346         FAIL_IF(push_inst(compiler, LUI | T(dst) | IMM(init_value >> 16), DR(dst)));
347         return push_inst(compiler, ORI | S(dst) | T(dst) | IMM(init_value), DR(dst));
348 }
349
350 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr)
351 {
352         sljit_ins *inst = (sljit_ins*)addr;
353
354         inst[0] = (inst[0] & 0xffff0000) | ((new_addr >> 16) & 0xffff);
355         inst[1] = (inst[1] & 0xffff0000) | (new_addr & 0xffff);
356         SLJIT_CACHE_FLUSH(inst, inst + 2);
357 }
358
359 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant)
360 {
361         sljit_ins *inst = (sljit_ins*)addr;
362
363         inst[0] = (inst[0] & 0xffff0000) | ((new_constant >> 16) & 0xffff);
364         inst[1] = (inst[1] & 0xffff0000) | (new_constant & 0xffff);
365         SLJIT_CACHE_FLUSH(inst, inst + 2);
366 }