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_norm) \
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_norm | S(src2) | T(src1) | DA(EQUAL_FLAG), EQUAL_FLAG)); \
65: if (CHECK_FLAGS(SLJIT_SET_E)) \
66: FAIL_IF(push_inst(compiler, op_norm | 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: sljit_si overflow_ra = 0;
73:
74: switch (GET_OPCODE(op)) {
75: case SLJIT_MOV:
76: case SLJIT_MOV_UI:
77: case SLJIT_MOV_SI:
78: case SLJIT_MOV_P:
79: SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
80: if (dst != src2)
81: return push_inst(compiler, ADDU | S(src2) | TA(0) | D(dst), DR(dst));
82: return SLJIT_SUCCESS;
83:
84: case SLJIT_MOV_UB:
85: case SLJIT_MOV_SB:
86: SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
87: if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
88: if (op == SLJIT_MOV_SB) {
89: #if (defined SLJIT_MIPS_32_64 && SLJIT_MIPS_32_64)
90: return push_inst(compiler, SEB | T(src2) | D(dst), DR(dst));
91: #else
92: FAIL_IF(push_inst(compiler, SLL | T(src2) | D(dst) | SH_IMM(24), DR(dst)));
93: return push_inst(compiler, SRA | T(dst) | D(dst) | SH_IMM(24), DR(dst));
94: #endif
95: }
96: return push_inst(compiler, ANDI | S(src2) | T(dst) | IMM(0xff), DR(dst));
97: }
98: else if (dst != src2)
99: SLJIT_ASSERT_STOP();
100: return SLJIT_SUCCESS;
101:
102: case SLJIT_MOV_UH:
103: case SLJIT_MOV_SH:
104: SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
105: if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
106: if (op == SLJIT_MOV_SH) {
107: #if (defined SLJIT_MIPS_32_64 && SLJIT_MIPS_32_64)
108: return push_inst(compiler, SEH | T(src2) | D(dst), DR(dst));
109: #else
110: FAIL_IF(push_inst(compiler, SLL | T(src2) | D(dst) | SH_IMM(16), DR(dst)));
111: return push_inst(compiler, SRA | T(dst) | D(dst) | SH_IMM(16), DR(dst));
112: #endif
113: }
114: return push_inst(compiler, ANDI | S(src2) | T(dst) | IMM(0xffff), DR(dst));
115: }
116: else if (dst != src2)
117: SLJIT_ASSERT_STOP();
118: return SLJIT_SUCCESS;
119:
120: case SLJIT_NOT:
121: SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
122: if (op & SLJIT_SET_E)
123: FAIL_IF(push_inst(compiler, NOR | S(src2) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
124: if (CHECK_FLAGS(SLJIT_SET_E))
125: FAIL_IF(push_inst(compiler, NOR | S(src2) | T(src2) | D(dst), DR(dst)));
126: return SLJIT_SUCCESS;
127:
128: case SLJIT_CLZ:
129: SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
130: #if (defined SLJIT_MIPS_32_64 && SLJIT_MIPS_32_64)
131: if (op & SLJIT_SET_E)
132: FAIL_IF(push_inst(compiler, CLZ | S(src2) | TA(EQUAL_FLAG) | DA(EQUAL_FLAG), EQUAL_FLAG));
133: if (CHECK_FLAGS(SLJIT_SET_E))
134: FAIL_IF(push_inst(compiler, CLZ | S(src2) | T(dst) | D(dst), DR(dst)));
135: #else
136: if (SLJIT_UNLIKELY(flags & UNUSED_DEST)) {
137: FAIL_IF(push_inst(compiler, SRL | T(src2) | DA(EQUAL_FLAG) | SH_IMM(31), EQUAL_FLAG));
138: return push_inst(compiler, XORI | SA(EQUAL_FLAG) | TA(EQUAL_FLAG) | IMM(1), EQUAL_FLAG);
139: }
140: /* Nearly all instructions are unmovable in the following sequence. */
141: FAIL_IF(push_inst(compiler, ADDU_W | S(src2) | TA(0) | D(TMP_REG1), DR(TMP_REG1)));
142: /* Check zero. */
143: FAIL_IF(push_inst(compiler, BEQ | S(TMP_REG1) | TA(0) | IMM(5), UNMOVABLE_INS));
144: FAIL_IF(push_inst(compiler, ORI | SA(0) | T(dst) | IMM(32), UNMOVABLE_INS));
145: FAIL_IF(push_inst(compiler, ADDIU_W | SA(0) | T(dst) | IMM(-1), DR(dst)));
146: /* Loop for searching the highest bit. */
147: FAIL_IF(push_inst(compiler, ADDIU_W | S(dst) | T(dst) | IMM(1), DR(dst)));
148: FAIL_IF(push_inst(compiler, BGEZ | S(TMP_REG1) | IMM(-2), UNMOVABLE_INS));
149: FAIL_IF(push_inst(compiler, SLL | T(TMP_REG1) | D(TMP_REG1) | SH_IMM(1), UNMOVABLE_INS));
150: if (op & SLJIT_SET_E)
151: return push_inst(compiler, ADDU_W | S(dst) | TA(0) | DA(EQUAL_FLAG), EQUAL_FLAG);
152: #endif
153: return SLJIT_SUCCESS;
154:
155: case SLJIT_ADD:
156: if (flags & SRC2_IMM) {
157: if (op & SLJIT_SET_O) {
158: FAIL_IF(push_inst(compiler, SRL | T(src1) | DA(TMP_EREG1) | SH_IMM(31), TMP_EREG1));
159: if (src2 < 0)
160: FAIL_IF(push_inst(compiler, XORI | SA(TMP_EREG1) | TA(TMP_EREG1) | IMM(1), TMP_EREG1));
161: }
162: if (op & SLJIT_SET_E)
163: FAIL_IF(push_inst(compiler, ADDIU | S(src1) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG));
164: if (op & SLJIT_SET_C) {
165: if (src2 >= 0)
166: FAIL_IF(push_inst(compiler, ORI | S(src1) | TA(ULESS_FLAG) | IMM(src2), ULESS_FLAG));
167: else {
168: FAIL_IF(push_inst(compiler, ADDIU | SA(0) | TA(ULESS_FLAG) | IMM(src2), ULESS_FLAG));
169: FAIL_IF(push_inst(compiler, OR | S(src1) | TA(ULESS_FLAG) | DA(ULESS_FLAG), ULESS_FLAG));
170: }
171: }
172: /* dst may be the same as src1 or src2. */
173: if (CHECK_FLAGS(SLJIT_SET_E))
174: FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(src2), DR(dst)));
175: if (op & SLJIT_SET_O) {
176: FAIL_IF(push_inst(compiler, SRL | T(dst) | DA(OVERFLOW_FLAG) | SH_IMM(31), OVERFLOW_FLAG));
177: if (src2 < 0)
178: FAIL_IF(push_inst(compiler, XORI | SA(OVERFLOW_FLAG) | TA(OVERFLOW_FLAG) | IMM(1), OVERFLOW_FLAG));
179: }
180: }
181: else {
182: if (op & SLJIT_SET_O) {
183: FAIL_IF(push_inst(compiler, XOR | S(src1) | T(src2) | DA(TMP_EREG1), TMP_EREG1));
184: FAIL_IF(push_inst(compiler, SRL | TA(TMP_EREG1) | DA(TMP_EREG1) | SH_IMM(31), TMP_EREG1));
185: if (src1 != dst)
186: overflow_ra = DR(src1);
187: else if (src2 != dst)
188: overflow_ra = DR(src2);
189: else {
190: /* Rare ocasion. */
191: FAIL_IF(push_inst(compiler, ADDU | S(src1) | TA(0) | DA(TMP_EREG2), TMP_EREG2));
192: overflow_ra = TMP_EREG2;
193: }
194: }
195: if (op & SLJIT_SET_E)
196: FAIL_IF(push_inst(compiler, ADDU | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
197: if (op & SLJIT_SET_C)
198: FAIL_IF(push_inst(compiler, OR | S(src1) | T(src2) | DA(ULESS_FLAG), ULESS_FLAG));
199: /* dst may be the same as src1 or src2. */
200: if (CHECK_FLAGS(SLJIT_SET_E))
201: FAIL_IF(push_inst(compiler, ADDU | S(src1) | T(src2) | D(dst), DR(dst)));
202: if (op & SLJIT_SET_O) {
203: FAIL_IF(push_inst(compiler, XOR | S(dst) | TA(overflow_ra) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
204: FAIL_IF(push_inst(compiler, SRL | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG) | SH_IMM(31), OVERFLOW_FLAG));
205: }
206: }
207:
208: /* a + b >= a | b (otherwise, the carry should be set to 1). */
209: if (op & SLJIT_SET_C)
210: FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(ULESS_FLAG) | DA(ULESS_FLAG), ULESS_FLAG));
211: if (op & SLJIT_SET_O)
212: return push_inst(compiler, MOVN | SA(0) | TA(TMP_EREG1) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG);
213: return SLJIT_SUCCESS;
214:
215: case SLJIT_ADDC:
216: if (flags & SRC2_IMM) {
217: if (op & SLJIT_SET_C) {
218: if (src2 >= 0)
219: FAIL_IF(push_inst(compiler, ORI | S(src1) | TA(TMP_EREG1) | IMM(src2), TMP_EREG1));
220: else {
221: FAIL_IF(push_inst(compiler, ADDIU | SA(0) | TA(TMP_EREG1) | IMM(src2), TMP_EREG1));
222: FAIL_IF(push_inst(compiler, OR | S(src1) | TA(TMP_EREG1) | DA(TMP_EREG1), TMP_EREG1));
223: }
224: }
225: FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(src2), DR(dst)));
226: } else {
227: if (op & SLJIT_SET_C)
228: FAIL_IF(push_inst(compiler, OR | S(src1) | T(src2) | DA(TMP_EREG1), TMP_EREG1));
229: /* dst may be the same as src1 or src2. */
230: FAIL_IF(push_inst(compiler, ADDU | S(src1) | T(src2) | D(dst), DR(dst)));
231: }
232: if (op & SLJIT_SET_C)
233: FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(TMP_EREG1) | DA(TMP_EREG1), TMP_EREG1));
234:
235: FAIL_IF(push_inst(compiler, ADDU | S(dst) | TA(ULESS_FLAG) | D(dst), DR(dst)));
236: if (!(op & SLJIT_SET_C))
237: return SLJIT_SUCCESS;
238:
239: /* Set TMP_EREG2 (dst == 0) && (ULESS_FLAG == 1). */
240: FAIL_IF(push_inst(compiler, SLTIU | S(dst) | TA(TMP_EREG2) | IMM(1), TMP_EREG2));
241: FAIL_IF(push_inst(compiler, AND | SA(TMP_EREG2) | TA(ULESS_FLAG) | DA(TMP_EREG2), TMP_EREG2));
242: /* Set carry flag. */
243: return push_inst(compiler, OR | SA(TMP_EREG2) | TA(TMP_EREG1) | DA(ULESS_FLAG), ULESS_FLAG);
244:
245: case SLJIT_SUB:
246: if ((flags & SRC2_IMM) && ((op & (SLJIT_SET_S | SLJIT_SET_U)) || src2 == SIMM_MIN)) {
247: FAIL_IF(push_inst(compiler, ADDIU | SA(0) | T(TMP_REG2) | IMM(src2), DR(TMP_REG2)));
248: src2 = TMP_REG2;
249: flags &= ~SRC2_IMM;
250: }
251:
252: if (flags & SRC2_IMM) {
253: if (op & SLJIT_SET_O) {
254: FAIL_IF(push_inst(compiler, SRL | T(src1) | DA(TMP_EREG1) | SH_IMM(31), TMP_EREG1));
255: if (src2 < 0)
256: FAIL_IF(push_inst(compiler, XORI | SA(TMP_EREG1) | TA(TMP_EREG1) | IMM(1), TMP_EREG1));
257: if (src1 != dst)
258: overflow_ra = DR(src1);
259: else {
260: /* Rare ocasion. */
261: FAIL_IF(push_inst(compiler, ADDU | S(src1) | TA(0) | DA(TMP_EREG2), TMP_EREG2));
262: overflow_ra = TMP_EREG2;
263: }
264: }
265: if (op & SLJIT_SET_E)
266: FAIL_IF(push_inst(compiler, ADDIU | S(src1) | TA(EQUAL_FLAG) | IMM(-src2), EQUAL_FLAG));
267: if (op & SLJIT_SET_C)
268: FAIL_IF(push_inst(compiler, SLTIU | S(src1) | TA(ULESS_FLAG) | IMM(src2), ULESS_FLAG));
269: /* dst may be the same as src1 or src2. */
270: if (CHECK_FLAGS(SLJIT_SET_E))
271: FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(-src2), DR(dst)));
272: }
273: else {
274: if (op & SLJIT_SET_O) {
275: FAIL_IF(push_inst(compiler, XOR | S(src1) | T(src2) | DA(TMP_EREG1), TMP_EREG1));
276: FAIL_IF(push_inst(compiler, SRL | TA(TMP_EREG1) | DA(TMP_EREG1) | SH_IMM(31), TMP_EREG1));
277: if (src1 != dst)
278: overflow_ra = DR(src1);
279: else {
280: /* Rare ocasion. */
281: FAIL_IF(push_inst(compiler, ADDU | S(src1) | TA(0) | DA(TMP_EREG2), TMP_EREG2));
282: overflow_ra = TMP_EREG2;
283: }
284: }
285: if (op & SLJIT_SET_E)
286: FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
287: if (op & (SLJIT_SET_U | SLJIT_SET_C))
288: FAIL_IF(push_inst(compiler, SLTU | S(src1) | T(src2) | DA(ULESS_FLAG), ULESS_FLAG));
289: if (op & SLJIT_SET_U)
290: FAIL_IF(push_inst(compiler, SLTU | S(src2) | T(src1) | DA(UGREATER_FLAG), UGREATER_FLAG));
291: if (op & SLJIT_SET_S) {
292: FAIL_IF(push_inst(compiler, SLT | S(src1) | T(src2) | DA(LESS_FLAG), LESS_FLAG));
293: FAIL_IF(push_inst(compiler, SLT | S(src2) | T(src1) | DA(GREATER_FLAG), GREATER_FLAG));
294: }
295: /* dst may be the same as src1 or src2. */
296: if (CHECK_FLAGS(SLJIT_SET_E | SLJIT_SET_S | SLJIT_SET_U | SLJIT_SET_C))
297: FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | D(dst), DR(dst)));
298: }
299:
300: if (op & SLJIT_SET_O) {
301: FAIL_IF(push_inst(compiler, XOR | S(dst) | TA(overflow_ra) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
302: FAIL_IF(push_inst(compiler, SRL | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG) | SH_IMM(31), OVERFLOW_FLAG));
303: return push_inst(compiler, MOVZ | SA(0) | TA(TMP_EREG1) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG);
304: }
305: return SLJIT_SUCCESS;
306:
307: case SLJIT_SUBC:
308: if ((flags & SRC2_IMM) && src2 == SIMM_MIN) {
309: FAIL_IF(push_inst(compiler, ADDIU | SA(0) | T(TMP_REG2) | IMM(src2), DR(TMP_REG2)));
310: src2 = TMP_REG2;
311: flags &= ~SRC2_IMM;
312: }
313:
314: if (flags & SRC2_IMM) {
315: if (op & SLJIT_SET_C)
316: FAIL_IF(push_inst(compiler, SLTIU | S(src1) | TA(TMP_EREG1) | IMM(-src2), TMP_EREG1));
317: /* dst may be the same as src1 or src2. */
318: FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(-src2), DR(dst)));
319: }
320: else {
321: if (op & SLJIT_SET_C)
322: FAIL_IF(push_inst(compiler, SLTU | S(src1) | T(src2) | DA(TMP_EREG1), TMP_EREG1));
323: /* dst may be the same as src1 or src2. */
324: FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | D(dst), DR(dst)));
325: }
326:
327: if (op & SLJIT_SET_C)
328: FAIL_IF(push_inst(compiler, MOVZ | SA(ULESS_FLAG) | T(dst) | DA(TMP_EREG1), TMP_EREG1));
329:
330: FAIL_IF(push_inst(compiler, SUBU | S(dst) | TA(ULESS_FLAG) | D(dst), DR(dst)));
331:
332: if (op & SLJIT_SET_C)
333: FAIL_IF(push_inst(compiler, ADDU | SA(TMP_EREG1) | TA(0) | DA(ULESS_FLAG), ULESS_FLAG));
334:
335: return SLJIT_SUCCESS;
336:
337: case SLJIT_MUL:
338: SLJIT_ASSERT(!(flags & SRC2_IMM));
339: if (!(op & SLJIT_SET_O)) {
340: #if (defined SLJIT_MIPS_32_64 && SLJIT_MIPS_32_64)
341: return push_inst(compiler, MUL | S(src1) | T(src2) | D(dst), DR(dst));
342: #else
343: FAIL_IF(push_inst(compiler, MULT | S(src1) | T(src2), MOVABLE_INS));
344: return push_inst(compiler, MFLO | D(dst), DR(dst));
345: #endif
346: }
347: FAIL_IF(push_inst(compiler, MULT | S(src1) | T(src2), MOVABLE_INS));
348: FAIL_IF(push_inst(compiler, MFHI | DA(TMP_EREG1), TMP_EREG1));
349: FAIL_IF(push_inst(compiler, MFLO | D(dst), DR(dst)));
350: FAIL_IF(push_inst(compiler, SRA | T(dst) | DA(TMP_EREG2) | SH_IMM(31), TMP_EREG2));
351: return push_inst(compiler, SUBU | SA(TMP_EREG1) | TA(TMP_EREG2) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG);
352:
353: case SLJIT_AND:
354: EMIT_LOGICAL(ANDI, AND);
355: return SLJIT_SUCCESS;
356:
357: case SLJIT_OR:
358: EMIT_LOGICAL(ORI, OR);
359: return SLJIT_SUCCESS;
360:
361: case SLJIT_XOR:
362: EMIT_LOGICAL(XORI, XOR);
363: return SLJIT_SUCCESS;
364:
365: case SLJIT_SHL:
366: EMIT_SHIFT(SLL, SLLV);
367: return SLJIT_SUCCESS;
368:
369: case SLJIT_LSHR:
370: EMIT_SHIFT(SRL, SRLV);
371: return SLJIT_SUCCESS;
372:
373: case SLJIT_ASHR:
374: EMIT_SHIFT(SRA, SRAV);
375: return SLJIT_SUCCESS;
376: }
377:
378: SLJIT_ASSERT_STOP();
379: return SLJIT_SUCCESS;
380: }
381:
382: static SLJIT_INLINE sljit_si emit_const(struct sljit_compiler *compiler, sljit_si dst, sljit_sw init_value)
383: {
384: FAIL_IF(push_inst(compiler, LUI | T(dst) | IMM(init_value >> 16), DR(dst)));
385: return push_inst(compiler, ORI | S(dst) | T(dst) | IMM(init_value), DR(dst));
386: }
387:
388: SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr)
389: {
390: sljit_ins *inst = (sljit_ins*)addr;
391:
392: inst[0] = (inst[0] & 0xffff0000) | ((new_addr >> 16) & 0xffff);
393: inst[1] = (inst[1] & 0xffff0000) | (new_addr & 0xffff);
394: SLJIT_CACHE_FLUSH(inst, inst + 2);
395: }
396:
397: SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant)
398: {
399: sljit_ins *inst = (sljit_ins*)addr;
400:
401: inst[0] = (inst[0] & 0xffff0000) | ((new_constant >> 16) & 0xffff);
402: inst[1] = (inst[1] & 0xffff0000) | (new_constant & 0xffff);
403: SLJIT_CACHE_FLUSH(inst, inst + 2);
404: }
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