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sljitNativeMIPS_32.c revision 1.1.1.2.4.4
      1 /*	$NetBSD: sljitNativeMIPS_32.c,v 1.1.1.2.4.4 2017/12/03 11:38:03 jdolecek Exp $	*/
      2 
      3 /*
      4  *    Stack-less Just-In-Time compiler
      5  *
      6  *    Copyright 2009-2012 Zoltan Herczeg (hzmester (at) freemail.hu). All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without modification, are
      9  * permitted provided that the following conditions are met:
     10  *
     11  *   1. Redistributions of source code must retain the above copyright notice, this list of
     12  *      conditions and the following disclaimer.
     13  *
     14  *   2. Redistributions in binary form must reproduce the above copyright notice, this list
     15  *      of conditions and the following disclaimer in the documentation and/or other materials
     16  *      provided with the distribution.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
     19  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
     21  * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
     23  * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
     24  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     25  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
     26  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 /* mips 32-bit arch dependent functions. */
     30 
     31 static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 dst_ar, sljit_sw imm)
     32 {
     33 	if (!(imm & ~0xffff))
     34 		return push_inst(compiler, ORI | SA(0) | TA(dst_ar) | IMM(imm), dst_ar);
     35 
     36 	if (imm < 0 && imm >= SIMM_MIN)
     37 		return push_inst(compiler, ADDIU | SA(0) | TA(dst_ar) | IMM(imm), dst_ar);
     38 
     39 	FAIL_IF(push_inst(compiler, LUI | TA(dst_ar) | IMM(imm >> 16), dst_ar));
     40 	return (imm & 0xffff) ? push_inst(compiler, ORI | SA(dst_ar) | TA(dst_ar) | IMM(imm), dst_ar) : SLJIT_SUCCESS;
     41 }
     42 
     43 #define EMIT_LOGICAL(op_imm, op_norm) \
     44 	if (flags & SRC2_IMM) { \
     45 		if (op & SLJIT_SET_E) \
     46 			FAIL_IF(push_inst(compiler, op_imm | S(src1) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG)); \
     47 		if (CHECK_FLAGS(SLJIT_SET_E)) \
     48 			FAIL_IF(push_inst(compiler, op_imm | S(src1) | T(dst) | IMM(src2), DR(dst))); \
     49 	} \
     50 	else { \
     51 		if (op & SLJIT_SET_E) \
     52 			FAIL_IF(push_inst(compiler, op_norm | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG)); \
     53 		if (CHECK_FLAGS(SLJIT_SET_E)) \
     54 			FAIL_IF(push_inst(compiler, op_norm | S(src1) | T(src2) | D(dst), DR(dst))); \
     55 	}
     56 
     57 #define EMIT_SHIFT(op_imm, op_v) \
     58 	if (flags & SRC2_IMM) { \
     59 		if (op & SLJIT_SET_E) \
     60 			FAIL_IF(push_inst(compiler, op_imm | T(src1) | DA(EQUAL_FLAG) | SH_IMM(src2), EQUAL_FLAG)); \
     61 		if (CHECK_FLAGS(SLJIT_SET_E)) \
     62 			FAIL_IF(push_inst(compiler, op_imm | T(src1) | D(dst) | SH_IMM(src2), DR(dst))); \
     63 	} \
     64 	else { \
     65 		if (op & SLJIT_SET_E) \
     66 			FAIL_IF(push_inst(compiler, op_v | S(src2) | T(src1) | DA(EQUAL_FLAG), EQUAL_FLAG)); \
     67 		if (CHECK_FLAGS(SLJIT_SET_E)) \
     68 			FAIL_IF(push_inst(compiler, op_v | S(src2) | T(src1) | D(dst), DR(dst))); \
     69 	}
     70 
     71 static SLJIT_INLINE sljit_s32 emit_single_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 flags,
     72 	sljit_s32 dst, sljit_s32 src1, sljit_sw src2)
     73 {
     74 	switch (GET_OPCODE(op)) {
     75 	case SLJIT_MOV:
     76 	case SLJIT_MOV_U32:
     77 	case SLJIT_MOV_S32:
     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_U8:
     85 	case SLJIT_MOV_S8:
     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_S8) {
     89 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
     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_U16:
    103 	case SLJIT_MOV_S16:
    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_S16) {
    107 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
    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_R1 && SLJIT_MIPS_R1)
    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 | 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 | SA(0) | T(dst) | IMM(-1), DR(dst)));
    146 		/* Loop for searching the highest bit. */
    147 		FAIL_IF(push_inst(compiler, ADDIU | 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 | 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 				if (src2 >= 0)
    159 					FAIL_IF(push_inst(compiler, OR | S(src1) | T(src1) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
    160 				else
    161 					FAIL_IF(push_inst(compiler, NOR | S(src1) | T(src1) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
    162 			}
    163 			if (op & SLJIT_SET_E)
    164 				FAIL_IF(push_inst(compiler, ADDIU | S(src1) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG));
    165 			if (op & (SLJIT_SET_C | SLJIT_SET_O)) {
    166 				if (src2 >= 0)
    167 					FAIL_IF(push_inst(compiler, ORI | S(src1) | TA(ULESS_FLAG) | IMM(src2), ULESS_FLAG));
    168 				else {
    169 					FAIL_IF(push_inst(compiler, ADDIU | SA(0) | TA(ULESS_FLAG) | IMM(src2), ULESS_FLAG));
    170 					FAIL_IF(push_inst(compiler, OR | S(src1) | TA(ULESS_FLAG) | DA(ULESS_FLAG), ULESS_FLAG));
    171 				}
    172 			}
    173 			/* dst may be the same as src1 or src2. */
    174 			if (CHECK_FLAGS(SLJIT_SET_E))
    175 				FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(src2), DR(dst)));
    176 		}
    177 		else {
    178 			if (op & SLJIT_SET_O)
    179 				FAIL_IF(push_inst(compiler, XOR | S(src1) | T(src2) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
    180 			if (op & SLJIT_SET_E)
    181 				FAIL_IF(push_inst(compiler, ADDU | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
    182 			if (op & (SLJIT_SET_C | SLJIT_SET_O))
    183 				FAIL_IF(push_inst(compiler, OR | S(src1) | T(src2) | DA(ULESS_FLAG), ULESS_FLAG));
    184 			/* dst may be the same as src1 or src2. */
    185 			if (CHECK_FLAGS(SLJIT_SET_E))
    186 				FAIL_IF(push_inst(compiler, ADDU | S(src1) | T(src2) | D(dst), DR(dst)));
    187 		}
    188 
    189 		/* a + b >= a | b (otherwise, the carry should be set to 1). */
    190 		if (op & (SLJIT_SET_C | SLJIT_SET_O))
    191 			FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(ULESS_FLAG) | DA(ULESS_FLAG), ULESS_FLAG));
    192 		if (!(op & SLJIT_SET_O))
    193 			return SLJIT_SUCCESS;
    194 		FAIL_IF(push_inst(compiler, SLL | TA(ULESS_FLAG) | D(TMP_REG1) | SH_IMM(31), DR(TMP_REG1)));
    195 		FAIL_IF(push_inst(compiler, XOR | S(TMP_REG1) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
    196 		FAIL_IF(push_inst(compiler, XOR | S(dst) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
    197 		return push_inst(compiler, SLL | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG) | SH_IMM(31), OVERFLOW_FLAG);
    198 
    199 	case SLJIT_ADDC:
    200 		if (flags & SRC2_IMM) {
    201 			if (op & SLJIT_SET_C) {
    202 				if (src2 >= 0)
    203 					FAIL_IF(push_inst(compiler, ORI | S(src1) | TA(OVERFLOW_FLAG) | IMM(src2), OVERFLOW_FLAG));
    204 				else {
    205 					FAIL_IF(push_inst(compiler, ADDIU | SA(0) | TA(OVERFLOW_FLAG) | IMM(src2), OVERFLOW_FLAG));
    206 					FAIL_IF(push_inst(compiler, OR | S(src1) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
    207 				}
    208 			}
    209 			FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(src2), DR(dst)));
    210 		} else {
    211 			if (op & SLJIT_SET_C)
    212 				FAIL_IF(push_inst(compiler, OR | S(src1) | T(src2) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
    213 			/* dst may be the same as src1 or src2. */
    214 			FAIL_IF(push_inst(compiler, ADDU | S(src1) | T(src2) | D(dst), DR(dst)));
    215 		}
    216 		if (op & SLJIT_SET_C)
    217 			FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
    218 
    219 		FAIL_IF(push_inst(compiler, ADDU | S(dst) | TA(ULESS_FLAG) | D(dst), DR(dst)));
    220 		if (!(op & SLJIT_SET_C))
    221 			return SLJIT_SUCCESS;
    222 
    223 		/* Set ULESS_FLAG (dst == 0) && (ULESS_FLAG == 1). */
    224 		FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(ULESS_FLAG) | DA(ULESS_FLAG), ULESS_FLAG));
    225 		/* Set carry flag. */
    226 		return push_inst(compiler, OR | SA(ULESS_FLAG) | TA(OVERFLOW_FLAG) | DA(ULESS_FLAG), ULESS_FLAG);
    227 
    228 	case SLJIT_SUB:
    229 		if ((flags & SRC2_IMM) && ((op & (SLJIT_SET_U | SLJIT_SET_S)) || src2 == SIMM_MIN)) {
    230 			FAIL_IF(push_inst(compiler, ADDIU | SA(0) | T(TMP_REG2) | IMM(src2), DR(TMP_REG2)));
    231 			src2 = TMP_REG2;
    232 			flags &= ~SRC2_IMM;
    233 		}
    234 
    235 		if (flags & SRC2_IMM) {
    236 			if (op & SLJIT_SET_O) {
    237 				if (src2 >= 0)
    238 					FAIL_IF(push_inst(compiler, OR | S(src1) | T(src1) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
    239 				else
    240 					FAIL_IF(push_inst(compiler, NOR | S(src1) | T(src1) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
    241 			}
    242 			if (op & SLJIT_SET_E)
    243 				FAIL_IF(push_inst(compiler, ADDIU | S(src1) | TA(EQUAL_FLAG) | IMM(-src2), EQUAL_FLAG));
    244 			if (op & (SLJIT_SET_C | SLJIT_SET_O))
    245 				FAIL_IF(push_inst(compiler, SLTIU | S(src1) | TA(ULESS_FLAG) | IMM(src2), ULESS_FLAG));
    246 			/* dst may be the same as src1 or src2. */
    247 			if (CHECK_FLAGS(SLJIT_SET_E))
    248 				FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(-src2), DR(dst)));
    249 		}
    250 		else {
    251 			if (op & SLJIT_SET_O)
    252 				FAIL_IF(push_inst(compiler, XOR | S(src1) | T(src2) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
    253 			if (op & SLJIT_SET_E)
    254 				FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
    255 			if (op & (SLJIT_SET_U | SLJIT_SET_C | SLJIT_SET_O))
    256 				FAIL_IF(push_inst(compiler, SLTU | S(src1) | T(src2) | DA(ULESS_FLAG), ULESS_FLAG));
    257 			if (op & SLJIT_SET_U)
    258 				FAIL_IF(push_inst(compiler, SLTU | S(src2) | T(src1) | DA(UGREATER_FLAG), UGREATER_FLAG));
    259 			if (op & SLJIT_SET_S) {
    260 				FAIL_IF(push_inst(compiler, SLT | S(src1) | T(src2) | DA(LESS_FLAG), LESS_FLAG));
    261 				FAIL_IF(push_inst(compiler, SLT | S(src2) | T(src1) | DA(GREATER_FLAG), GREATER_FLAG));
    262 			}
    263 			/* dst may be the same as src1 or src2. */
    264 			if (CHECK_FLAGS(SLJIT_SET_E | SLJIT_SET_U | SLJIT_SET_S | SLJIT_SET_C))
    265 				FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | D(dst), DR(dst)));
    266 		}
    267 
    268 		if (!(op & SLJIT_SET_O))
    269 			return SLJIT_SUCCESS;
    270 		FAIL_IF(push_inst(compiler, SLL | TA(ULESS_FLAG) | D(TMP_REG1) | SH_IMM(31), DR(TMP_REG1)));
    271 		FAIL_IF(push_inst(compiler, XOR | S(TMP_REG1) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
    272 		FAIL_IF(push_inst(compiler, XOR | S(dst) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
    273 		return push_inst(compiler, SRL | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG) | SH_IMM(31), OVERFLOW_FLAG);
    274 
    275 	case SLJIT_SUBC:
    276 		if ((flags & SRC2_IMM) && src2 == SIMM_MIN) {
    277 			FAIL_IF(push_inst(compiler, ADDIU | SA(0) | T(TMP_REG2) | IMM(src2), DR(TMP_REG2)));
    278 			src2 = TMP_REG2;
    279 			flags &= ~SRC2_IMM;
    280 		}
    281 
    282 		if (flags & SRC2_IMM) {
    283 			if (op & SLJIT_SET_C)
    284 				FAIL_IF(push_inst(compiler, SLTIU | S(src1) | TA(OVERFLOW_FLAG) | IMM(src2), OVERFLOW_FLAG));
    285 			/* dst may be the same as src1 or src2. */
    286 			FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(-src2), DR(dst)));
    287 		}
    288 		else {
    289 			if (op & SLJIT_SET_C)
    290 				FAIL_IF(push_inst(compiler, SLTU | S(src1) | T(src2) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
    291 			/* dst may be the same as src1 or src2. */
    292 			FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | D(dst), DR(dst)));
    293 		}
    294 
    295 		if (op & SLJIT_SET_C)
    296 			FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(ULESS_FLAG) | DA(LESS_FLAG), LESS_FLAG));
    297 
    298 		FAIL_IF(push_inst(compiler, SUBU | S(dst) | TA(ULESS_FLAG) | D(dst), DR(dst)));
    299 		return (op & SLJIT_SET_C) ? push_inst(compiler, OR | SA(OVERFLOW_FLAG) | TA(LESS_FLAG) | DA(ULESS_FLAG), ULESS_FLAG) : SLJIT_SUCCESS;
    300 
    301 	case SLJIT_MUL:
    302 		SLJIT_ASSERT(!(flags & SRC2_IMM));
    303 		if (!(op & SLJIT_SET_O)) {
    304 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
    305 			return push_inst(compiler, MUL | S(src1) | T(src2) | D(dst), DR(dst));
    306 #else
    307 			FAIL_IF(push_inst(compiler, MULT | S(src1) | T(src2), MOVABLE_INS));
    308 			return push_inst(compiler, MFLO | D(dst), DR(dst));
    309 #endif
    310 		}
    311 		FAIL_IF(push_inst(compiler, MULT | S(src1) | T(src2), MOVABLE_INS));
    312 		FAIL_IF(push_inst(compiler, MFHI | DA(ULESS_FLAG), ULESS_FLAG));
    313 		FAIL_IF(push_inst(compiler, MFLO | D(dst), DR(dst)));
    314 		FAIL_IF(push_inst(compiler, SRA | T(dst) | DA(UGREATER_FLAG) | SH_IMM(31), UGREATER_FLAG));
    315 		return push_inst(compiler, SUBU | SA(ULESS_FLAG) | TA(UGREATER_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG);
    316 
    317 	case SLJIT_AND:
    318 		EMIT_LOGICAL(ANDI, AND);
    319 		return SLJIT_SUCCESS;
    320 
    321 	case SLJIT_OR:
    322 		EMIT_LOGICAL(ORI, OR);
    323 		return SLJIT_SUCCESS;
    324 
    325 	case SLJIT_XOR:
    326 		EMIT_LOGICAL(XORI, XOR);
    327 		return SLJIT_SUCCESS;
    328 
    329 	case SLJIT_SHL:
    330 		EMIT_SHIFT(SLL, SLLV);
    331 		return SLJIT_SUCCESS;
    332 
    333 	case SLJIT_LSHR:
    334 		EMIT_SHIFT(SRL, SRLV);
    335 		return SLJIT_SUCCESS;
    336 
    337 	case SLJIT_ASHR:
    338 		EMIT_SHIFT(SRA, SRAV);
    339 		return SLJIT_SUCCESS;
    340 	}
    341 
    342 	SLJIT_ASSERT_STOP();
    343 	return SLJIT_SUCCESS;
    344 }
    345 
    346 static SLJIT_INLINE sljit_s32 emit_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw init_value)
    347 {
    348 	FAIL_IF(push_inst(compiler, LUI | T(dst) | IMM(init_value >> 16), DR(dst)));
    349 	return push_inst(compiler, ORI | S(dst) | T(dst) | IMM(init_value), DR(dst));
    350 }
    351 
    352 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr)
    353 {
    354 	sljit_ins *inst = (sljit_ins*)addr;
    355 
    356 	inst[0] = (inst[0] & 0xffff0000) | ((new_addr >> 16) & 0xffff);
    357 	inst[1] = (inst[1] & 0xffff0000) | (new_addr & 0xffff);
    358 	SLJIT_CACHE_FLUSH(inst, inst + 2);
    359 }
    360 
    361 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant)
    362 {
    363 	sljit_ins *inst = (sljit_ins*)addr;
    364 
    365 	inst[0] = (inst[0] & 0xffff0000) | ((new_constant >> 16) & 0xffff);
    366 	inst[1] = (inst[1] & 0xffff0000) | (new_constant & 0xffff);
    367 	SLJIT_CACHE_FLUSH(inst, inst + 2);
    368 }
    369