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pcre/sljit/sljitNativeMIPS_64.c

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/*
* Stack-less Just-In-Time compiler
*
* Copyright Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* mips 64-bit arch dependent functions. */
static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 dst_ar, sljit_sw imm)
{
sljit_s32 shift = 32;
sljit_s32 shift2;
sljit_s32 inv = 0;
sljit_ins ins;
sljit_uw uimm;
if (!(imm & ~0xffff))
return push_inst(compiler, ORI | SA(0) | TA(dst_ar) | IMM(imm), dst_ar);
if (imm < 0 && imm >= SIMM_MIN)
return push_inst(compiler, ADDIU | SA(0) | TA(dst_ar) | IMM(imm), dst_ar);
if (imm <= 0x7fffffffl && imm >= -0x80000000l) {
FAIL_IF(push_inst(compiler, LUI | TA(dst_ar) | IMM(imm >> 16), dst_ar));
return (imm & 0xffff) ? push_inst(compiler, ORI | SA(dst_ar) | TA(dst_ar) | IMM(imm), dst_ar) : SLJIT_SUCCESS;
}
/* Zero extended number. */
uimm = imm;
if (imm < 0) {
uimm = ~imm;
inv = 1;
}
while (!(uimm & 0xff00000000000000l)) {
shift -= 8;
uimm <<= 8;
}
if (!(uimm & 0xf000000000000000l)) {
shift -= 4;
uimm <<= 4;
}
if (!(uimm & 0xc000000000000000l)) {
shift -= 2;
uimm <<= 2;
}
if ((sljit_sw)uimm < 0) {
uimm >>= 1;
shift += 1;
}
SLJIT_ASSERT(((uimm & 0xc000000000000000l) == 0x4000000000000000l) && (shift > 0) && (shift <= 32));
if (inv)
uimm = ~uimm;
FAIL_IF(push_inst(compiler, LUI | TA(dst_ar) | IMM(uimm >> 48), dst_ar));
if (uimm & 0x0000ffff00000000l)
FAIL_IF(push_inst(compiler, ORI | SA(dst_ar) | TA(dst_ar) | IMM(uimm >> 32), dst_ar));
imm &= (1l << shift) - 1;
if (!(imm & ~0xffff)) {
ins = (shift == 32) ? DSLL32 : DSLL;
if (shift < 32)
ins |= SH_IMM(shift);
FAIL_IF(push_inst(compiler, ins | TA(dst_ar) | DA(dst_ar), dst_ar));
return !(imm & 0xffff) ? SLJIT_SUCCESS : push_inst(compiler, ORI | SA(dst_ar) | TA(dst_ar) | IMM(imm), dst_ar);
}
/* Double shifts needs to be performed. */
uimm <<= 32;
shift2 = shift - 16;
while (!(uimm & 0xf000000000000000l)) {
shift2 -= 4;
uimm <<= 4;
}
if (!(uimm & 0xc000000000000000l)) {
shift2 -= 2;
uimm <<= 2;
}
if (!(uimm & 0x8000000000000000l)) {
shift2--;
uimm <<= 1;
}
SLJIT_ASSERT((uimm & 0x8000000000000000l) && (shift2 > 0) && (shift2 <= 16));
FAIL_IF(push_inst(compiler, DSLL | TA(dst_ar) | DA(dst_ar) | SH_IMM(shift - shift2), dst_ar));
FAIL_IF(push_inst(compiler, ORI | SA(dst_ar) | TA(dst_ar) | IMM(uimm >> 48), dst_ar));
FAIL_IF(push_inst(compiler, DSLL | TA(dst_ar) | DA(dst_ar) | SH_IMM(shift2), dst_ar));
imm &= (1l << shift2) - 1;
return !(imm & 0xffff) ? SLJIT_SUCCESS : push_inst(compiler, ORI | SA(dst_ar) | TA(dst_ar) | IMM(imm), dst_ar);
}
#define SELECT_OP(a, b) \
(!(op & SLJIT_I32_OP) ? a : b)
#define EMIT_LOGICAL(op_imm, op_norm) \
if (flags & SRC2_IMM) { \
if (op & SLJIT_SET_Z) \
FAIL_IF(push_inst(compiler, op_imm | S(src1) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG)); \
if (!(flags & UNUSED_DEST)) \
FAIL_IF(push_inst(compiler, op_imm | S(src1) | T(dst) | IMM(src2), DR(dst))); \
} \
else { \
if (op & SLJIT_SET_Z) \
FAIL_IF(push_inst(compiler, op_norm | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG)); \
if (!(flags & UNUSED_DEST)) \
FAIL_IF(push_inst(compiler, op_norm | S(src1) | T(src2) | D(dst), DR(dst))); \
}
#define EMIT_SHIFT(op_dimm, op_dimm32, op_imm, op_dv, op_v) \
if (flags & SRC2_IMM) { \
if (src2 >= 32) { \
SLJIT_ASSERT(!(op & SLJIT_I32_OP)); \
ins = op_dimm32; \
src2 -= 32; \
} \
else \
ins = (op & SLJIT_I32_OP) ? op_imm : op_dimm; \
if (op & SLJIT_SET_Z) \
FAIL_IF(push_inst(compiler, ins | T(src1) | DA(EQUAL_FLAG) | SH_IMM(src2), EQUAL_FLAG)); \
if (!(flags & UNUSED_DEST)) \
FAIL_IF(push_inst(compiler, ins | T(src1) | D(dst) | SH_IMM(src2), DR(dst))); \
} \
else { \
ins = (op & SLJIT_I32_OP) ? op_v : op_dv; \
if (op & SLJIT_SET_Z) \
FAIL_IF(push_inst(compiler, ins | S(src2) | T(src1) | DA(EQUAL_FLAG), EQUAL_FLAG)); \
if (!(flags & UNUSED_DEST)) \
FAIL_IF(push_inst(compiler, ins | S(src2) | T(src1) | D(dst), DR(dst))); \
}
static SLJIT_INLINE sljit_s32 emit_single_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 flags,
sljit_s32 dst, sljit_s32 src1, sljit_sw src2)
{
sljit_ins ins;
sljit_s32 is_overflow, is_carry, is_handled;
switch (GET_OPCODE(op)) {
case SLJIT_MOV:
case SLJIT_MOV_P:
SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
if (dst != src2)
return push_inst(compiler, SELECT_OP(DADDU, ADDU) | S(src2) | TA(0) | D(dst), DR(dst));
return SLJIT_SUCCESS;
case SLJIT_MOV_U8:
case SLJIT_MOV_S8:
SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
if (op == SLJIT_MOV_S8) {
FAIL_IF(push_inst(compiler, DSLL32 | T(src2) | D(dst) | SH_IMM(24), DR(dst)));
return push_inst(compiler, DSRA32 | T(dst) | D(dst) | SH_IMM(24), DR(dst));
}
return push_inst(compiler, ANDI | S(src2) | T(dst) | IMM(0xff), DR(dst));
}
else {
SLJIT_ASSERT(dst == src2);
}
return SLJIT_SUCCESS;
case SLJIT_MOV_U16:
case SLJIT_MOV_S16:
SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
if (op == SLJIT_MOV_S16) {
FAIL_IF(push_inst(compiler, DSLL32 | T(src2) | D(dst) | SH_IMM(16), DR(dst)));
return push_inst(compiler, DSRA32 | T(dst) | D(dst) | SH_IMM(16), DR(dst));
}
return push_inst(compiler, ANDI | S(src2) | T(dst) | IMM(0xffff), DR(dst));
}
else {
SLJIT_ASSERT(dst == src2);
}
return SLJIT_SUCCESS;
case SLJIT_MOV_U32:
SLJIT_ASSERT(!(op & SLJIT_I32_OP));
FAIL_IF(push_inst(compiler, DSLL32 | T(src2) | D(dst) | SH_IMM(0), DR(dst)));
return push_inst(compiler, DSRL32 | T(dst) | D(dst) | SH_IMM(0), DR(dst));
case SLJIT_MOV_S32:
SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
return push_inst(compiler, SLL | T(src2) | D(dst) | SH_IMM(0), DR(dst));
case SLJIT_NOT:
SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
if (op & SLJIT_SET_Z)
FAIL_IF(push_inst(compiler, NOR | S(src2) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
if (!(flags & UNUSED_DEST))
FAIL_IF(push_inst(compiler, NOR | S(src2) | T(src2) | D(dst), DR(dst)));
return SLJIT_SUCCESS;
case SLJIT_CLZ:
SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
#if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
if (op & SLJIT_SET_Z)
FAIL_IF(push_inst(compiler, SELECT_OP(DCLZ, CLZ) | S(src2) | TA(EQUAL_FLAG) | DA(EQUAL_FLAG), EQUAL_FLAG));
if (!(flags & UNUSED_DEST))
FAIL_IF(push_inst(compiler, SELECT_OP(DCLZ, CLZ) | S(src2) | T(dst) | D(dst), DR(dst)));
#else
if (SLJIT_UNLIKELY(flags & UNUSED_DEST)) {
FAIL_IF(push_inst(compiler, SELECT_OP(DSRL32, SRL) | T(src2) | DA(EQUAL_FLAG) | SH_IMM(31), EQUAL_FLAG));
return push_inst(compiler, XORI | SA(EQUAL_FLAG) | TA(EQUAL_FLAG) | IMM(1), EQUAL_FLAG);
}
/* Nearly all instructions are unmovable in the following sequence. */
FAIL_IF(push_inst(compiler, SELECT_OP(DADDU, ADDU) | S(src2) | TA(0) | D(TMP_REG1), DR(TMP_REG1)));
/* Check zero. */
FAIL_IF(push_inst(compiler, BEQ | S(TMP_REG1) | TA(0) | IMM(5), UNMOVABLE_INS));
FAIL_IF(push_inst(compiler, ORI | SA(0) | T(dst) | IMM((op & SLJIT_I32_OP) ? 32 : 64), UNMOVABLE_INS));
FAIL_IF(push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | SA(0) | T(dst) | IMM(-1), DR(dst)));
/* Loop for searching the highest bit. */
FAIL_IF(push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | S(dst) | T(dst) | IMM(1), DR(dst)));
FAIL_IF(push_inst(compiler, BGEZ | S(TMP_REG1) | IMM(-2), UNMOVABLE_INS));
FAIL_IF(push_inst(compiler, SELECT_OP(DSLL, SLL) | T(TMP_REG1) | D(TMP_REG1) | SH_IMM(1), UNMOVABLE_INS));
#endif
return SLJIT_SUCCESS;
case SLJIT_ADD:
is_overflow = GET_FLAG_TYPE(op) == SLJIT_OVERFLOW;
is_carry = GET_FLAG_TYPE(op) == GET_FLAG_TYPE(SLJIT_SET_CARRY);
if (flags & SRC2_IMM) {
if (is_overflow) {
if (src2 >= 0)
FAIL_IF(push_inst(compiler, OR | S(src1) | T(src1) | DA(EQUAL_FLAG), EQUAL_FLAG));
else
FAIL_IF(push_inst(compiler, NOR | S(src1) | T(src1) | DA(EQUAL_FLAG), EQUAL_FLAG));
}
else if (op & SLJIT_SET_Z)
FAIL_IF(push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | S(src1) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG));
if (is_overflow || is_carry) {
if (src2 >= 0)
FAIL_IF(push_inst(compiler, ORI | S(src1) | TA(OTHER_FLAG) | IMM(src2), OTHER_FLAG));
else {
FAIL_IF(push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | SA(0) | TA(OTHER_FLAG) | IMM(src2), OTHER_FLAG));
FAIL_IF(push_inst(compiler, OR | S(src1) | TA(OTHER_FLAG) | DA(OTHER_FLAG), OTHER_FLAG));
}
}
/* dst may be the same as src1 or src2. */
if (!(flags & UNUSED_DEST) || (op & VARIABLE_FLAG_MASK))
FAIL_IF(push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | S(src1) | T(dst) | IMM(src2), DR(dst)));
}
else {
if (is_overflow)
FAIL_IF(push_inst(compiler, XOR | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
else if (op & SLJIT_SET_Z)
FAIL_IF(push_inst(compiler, SELECT_OP(DADDU, ADDU) | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
if (is_overflow || is_carry)
FAIL_IF(push_inst(compiler, OR | S(src1) | T(src2) | DA(OTHER_FLAG), OTHER_FLAG));
/* dst may be the same as src1 or src2. */
if (!(flags & UNUSED_DEST) || (op & VARIABLE_FLAG_MASK))
FAIL_IF(push_inst(compiler, SELECT_OP(DADDU, ADDU) | S(src1) | T(src2) | D(dst), DR(dst)));
}
/* a + b >= a | b (otherwise, the carry should be set to 1). */
if (is_overflow || is_carry)
FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(OTHER_FLAG) | DA(OTHER_FLAG), OTHER_FLAG));
if (!is_overflow)
return SLJIT_SUCCESS;
FAIL_IF(push_inst(compiler, SELECT_OP(DSLL32, SLL) | TA(OTHER_FLAG) | D(TMP_REG1) | SH_IMM(31), DR(TMP_REG1)));
FAIL_IF(push_inst(compiler, XOR | S(TMP_REG1) | TA(EQUAL_FLAG) | DA(EQUAL_FLAG), EQUAL_FLAG));
FAIL_IF(push_inst(compiler, XOR | S(dst) | TA(EQUAL_FLAG) | DA(OTHER_FLAG), OTHER_FLAG));
if (op & SLJIT_SET_Z)
FAIL_IF(push_inst(compiler, SELECT_OP(DADDU, ADDU) | S(dst) | TA(0) | DA(EQUAL_FLAG), EQUAL_FLAG));
return push_inst(compiler, SELECT_OP(DSRL32, SRL) | TA(OTHER_FLAG) | DA(OTHER_FLAG) | SH_IMM(31), OTHER_FLAG);
case SLJIT_ADDC:
is_carry = GET_FLAG_TYPE(op) == GET_FLAG_TYPE(SLJIT_SET_CARRY);
if (flags & SRC2_IMM) {
if (is_carry) {
if (src2 >= 0)
FAIL_IF(push_inst(compiler, ORI | S(src1) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG));
else {
FAIL_IF(push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | SA(0) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG));
FAIL_IF(push_inst(compiler, OR | S(src1) | TA(EQUAL_FLAG) | DA(EQUAL_FLAG), EQUAL_FLAG));
}
}
FAIL_IF(push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | S(src1) | T(dst) | IMM(src2), DR(dst)));
} else {
if (is_carry)
FAIL_IF(push_inst(compiler, OR | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
/* dst may be the same as src1 or src2. */
FAIL_IF(push_inst(compiler, SELECT_OP(DADDU, ADDU) | S(src1) | T(src2) | D(dst), DR(dst)));
}
if (is_carry)
FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(EQUAL_FLAG) | DA(EQUAL_FLAG), EQUAL_FLAG));
FAIL_IF(push_inst(compiler, SELECT_OP(DADDU, ADDU) | S(dst) | TA(OTHER_FLAG) | D(dst), DR(dst)));
if (!is_carry)
return SLJIT_SUCCESS;
/* Set ULESS_FLAG (dst == 0) && (OTHER_FLAG == 1). */
FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(OTHER_FLAG) | DA(OTHER_FLAG), OTHER_FLAG));
/* Set carry flag. */
return push_inst(compiler, OR | SA(OTHER_FLAG) | TA(EQUAL_FLAG) | DA(OTHER_FLAG), OTHER_FLAG);
case SLJIT_SUB:
if ((flags & SRC2_IMM) && src2 == SIMM_MIN) {
FAIL_IF(push_inst(compiler, ADDIU | SA(0) | T(TMP_REG2) | IMM(src2), DR(TMP_REG2)));
src2 = TMP_REG2;
flags &= ~SRC2_IMM;
}
is_handled = 0;
if (flags & SRC2_IMM) {
if (GET_FLAG_TYPE(op) == SLJIT_LESS || GET_FLAG_TYPE(op) == SLJIT_GREATER_EQUAL) {
FAIL_IF(push_inst(compiler, SLTIU | S(src1) | TA(OTHER_FLAG) | IMM(src2), OTHER_FLAG));
is_handled = 1;
}
else if (GET_FLAG_TYPE(op) == SLJIT_SIG_LESS || GET_FLAG_TYPE(op) == SLJIT_SIG_GREATER_EQUAL) {
FAIL_IF(push_inst(compiler, SLTI | S(src1) | TA(OTHER_FLAG) | IMM(src2), OTHER_FLAG));
is_handled = 1;
}
}
if (!is_handled && GET_FLAG_TYPE(op) >= SLJIT_LESS && GET_FLAG_TYPE(op) <= SLJIT_SIG_LESS_EQUAL) {
is_handled = 1;
if (flags & SRC2_IMM) {
FAIL_IF(push_inst(compiler, ADDIU | SA(0) | T(TMP_REG2) | IMM(src2), DR(TMP_REG2)));
src2 = TMP_REG2;
flags &= ~SRC2_IMM;
}
if (GET_FLAG_TYPE(op) == SLJIT_LESS || GET_FLAG_TYPE(op) == SLJIT_GREATER_EQUAL) {
FAIL_IF(push_inst(compiler, SLTU | S(src1) | T(src2) | DA(OTHER_FLAG), OTHER_FLAG));
}
else if (GET_FLAG_TYPE(op) == SLJIT_GREATER || GET_FLAG_TYPE(op) == SLJIT_LESS_EQUAL)
{
FAIL_IF(push_inst(compiler, SLTU | S(src2) | T(src1) | DA(OTHER_FLAG), OTHER_FLAG));
}
else if (GET_FLAG_TYPE(op) == SLJIT_SIG_LESS || GET_FLAG_TYPE(op) == SLJIT_SIG_GREATER_EQUAL) {
FAIL_IF(push_inst(compiler, SLT | S(src1) | T(src2) | DA(OTHER_FLAG), OTHER_FLAG));
}
else if (GET_FLAG_TYPE(op) == SLJIT_SIG_GREATER || GET_FLAG_TYPE(op) == SLJIT_SIG_LESS_EQUAL)
{
FAIL_IF(push_inst(compiler, SLT | S(src2) | T(src1) | DA(OTHER_FLAG), OTHER_FLAG));
}
}
if (is_handled) {
if (flags & SRC2_IMM) {
if (op & SLJIT_SET_Z)
FAIL_IF(push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | S(src1) | TA(EQUAL_FLAG) | IMM(-src2), EQUAL_FLAG));
if (!(flags & UNUSED_DEST))
return push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | S(src1) | T(dst) | IMM(-src2), DR(dst));
}
else {
if (op & SLJIT_SET_Z)
FAIL_IF(push_inst(compiler, SELECT_OP(DSUBU, SUBU) | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
if (!(flags & UNUSED_DEST))
return push_inst(compiler, SELECT_OP(DSUBU, SUBU) | S(src1) | T(src2) | D(dst), DR(dst));
}
return SLJIT_SUCCESS;
}
is_overflow = GET_FLAG_TYPE(op) == SLJIT_OVERFLOW;
is_carry = GET_FLAG_TYPE(op) == GET_FLAG_TYPE(SLJIT_SET_CARRY);
if (flags & SRC2_IMM) {
if (is_overflow) {
if (src2 >= 0)
FAIL_IF(push_inst(compiler, OR | S(src1) | T(src1) | DA(EQUAL_FLAG), EQUAL_FLAG));
else
FAIL_IF(push_inst(compiler, NOR | S(src1) | T(src1) | DA(EQUAL_FLAG), EQUAL_FLAG));
}
else if (op & SLJIT_SET_Z)
FAIL_IF(push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | S(src1) | TA(EQUAL_FLAG) | IMM(-src2), EQUAL_FLAG));
if (is_overflow || is_carry)
FAIL_IF(push_inst(compiler, SLTIU | S(src1) | TA(OTHER_FLAG) | IMM(src2), OTHER_FLAG));
/* dst may be the same as src1 or src2. */
if (!(flags & UNUSED_DEST) || (op & VARIABLE_FLAG_MASK))
FAIL_IF(push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | S(src1) | T(dst) | IMM(-src2), DR(dst)));
}
else {
if (is_overflow)
FAIL_IF(push_inst(compiler, XOR | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
else if (op & SLJIT_SET_Z)
FAIL_IF(push_inst(compiler, SELECT_OP(DSUBU, SUBU) | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
if (is_overflow || is_carry)
FAIL_IF(push_inst(compiler, SLTU | S(src1) | T(src2) | DA(OTHER_FLAG), OTHER_FLAG));
/* dst may be the same as src1 or src2. */
if (!(flags & UNUSED_DEST) || (op & VARIABLE_FLAG_MASK))
FAIL_IF(push_inst(compiler, SELECT_OP(DSUBU, SUBU) | S(src1) | T(src2) | D(dst), DR(dst)));
}
if (!is_overflow)
return SLJIT_SUCCESS;
FAIL_IF(push_inst(compiler, SELECT_OP(DSLL32, SLL) | TA(OTHER_FLAG) | D(TMP_REG1) | SH_IMM(31), DR(TMP_REG1)));
FAIL_IF(push_inst(compiler, XOR | S(TMP_REG1) | TA(EQUAL_FLAG) | DA(EQUAL_FLAG), EQUAL_FLAG));
FAIL_IF(push_inst(compiler, XOR | S(dst) | TA(EQUAL_FLAG) | DA(OTHER_FLAG), OTHER_FLAG));
if (op & SLJIT_SET_Z)
FAIL_IF(push_inst(compiler, SELECT_OP(DADDU, ADDU) | S(dst) | TA(0) | DA(EQUAL_FLAG), EQUAL_FLAG));
return push_inst(compiler, SELECT_OP(DSRL32, SRL) | TA(OTHER_FLAG) | DA(OTHER_FLAG) | SH_IMM(31), OTHER_FLAG);
case SLJIT_SUBC:
if ((flags & SRC2_IMM) && src2 == SIMM_MIN) {
FAIL_IF(push_inst(compiler, ADDIU | SA(0) | T(TMP_REG2) | IMM(src2), DR(TMP_REG2)));
src2 = TMP_REG2;
flags &= ~SRC2_IMM;
}
is_carry = GET_FLAG_TYPE(op) == GET_FLAG_TYPE(SLJIT_SET_CARRY);
if (flags & SRC2_IMM) {
if (is_carry)
FAIL_IF(push_inst(compiler, SLTIU | S(src1) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG));
/* dst may be the same as src1 or src2. */
FAIL_IF(push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | S(src1) | T(dst) | IMM(-src2), DR(dst)));
}
else {
if (is_carry)
FAIL_IF(push_inst(compiler, SLTU | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
/* dst may be the same as src1 or src2. */
FAIL_IF(push_inst(compiler, SELECT_OP(DSUBU, SUBU) | S(src1) | T(src2) | D(dst), DR(dst)));
}
if (is_carry)
FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(OTHER_FLAG) | D(TMP_REG1), DR(TMP_REG1)));
FAIL_IF(push_inst(compiler, SELECT_OP(DSUBU, SUBU) | S(dst) | TA(OTHER_FLAG) | D(dst), DR(dst)));
return (is_carry) ? push_inst(compiler, OR | SA(EQUAL_FLAG) | T(TMP_REG1) | DA(OTHER_FLAG), OTHER_FLAG) : SLJIT_SUCCESS;
case SLJIT_MUL:
SLJIT_ASSERT(!(flags & SRC2_IMM));
if (GET_FLAG_TYPE(op) != SLJIT_MUL_OVERFLOW) {
#if (defined SLJIT_MIPS_R6 && SLJIT_MIPS_R6)
return push_inst(compiler, SELECT_OP(DMUL, MUL) | S(src1) | T(src2) | D(dst), DR(dst));
#elif (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
if (op & SLJIT_I32_OP)
return push_inst(compiler, MUL | S(src1) | T(src2) | D(dst), DR(dst));
FAIL_IF(push_inst(compiler, DMULT | S(src1) | T(src2), MOVABLE_INS));
return push_inst(compiler, MFLO | D(dst), DR(dst));
#else /* !SLJIT_MIPS_R6 && !SLJIT_MIPS_R1 */
FAIL_IF(push_inst(compiler, SELECT_OP(DMULT, MULT) | S(src1) | T(src2), MOVABLE_INS));
return push_inst(compiler, MFLO | D(dst), DR(dst));
#endif /* SLJIT_MIPS_R6 */
}
#if (defined SLJIT_MIPS_R6 && SLJIT_MIPS_R6)
FAIL_IF(push_inst(compiler, SELECT_OP(DMUL, MUL) | S(src1) | T(src2) | D(dst), DR(dst)));
FAIL_IF(push_inst(compiler, SELECT_OP(DMUH, MUH) | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
#else /* !SLJIT_MIPS_R6 */
FAIL_IF(push_inst(compiler, SELECT_OP(DMULT, MULT) | S(src1) | T(src2), MOVABLE_INS));
FAIL_IF(push_inst(compiler, MFHI | DA(EQUAL_FLAG), EQUAL_FLAG));
FAIL_IF(push_inst(compiler, MFLO | D(dst), DR(dst)));
#endif /* SLJIT_MIPS_R6 */
FAIL_IF(push_inst(compiler, SELECT_OP(DSRA32, SRA) | T(dst) | DA(OTHER_FLAG) | SH_IMM(31), OTHER_FLAG));
return push_inst(compiler, SELECT_OP(DSUBU, SUBU) | SA(EQUAL_FLAG) | TA(OTHER_FLAG) | DA(OTHER_FLAG), OTHER_FLAG);
case SLJIT_AND:
EMIT_LOGICAL(ANDI, AND);
return SLJIT_SUCCESS;
case SLJIT_OR:
EMIT_LOGICAL(ORI, OR);
return SLJIT_SUCCESS;
case SLJIT_XOR:
EMIT_LOGICAL(XORI, XOR);
return SLJIT_SUCCESS;
case SLJIT_SHL:
EMIT_SHIFT(DSLL, DSLL32, SLL, DSLLV, SLLV);
return SLJIT_SUCCESS;
case SLJIT_LSHR:
EMIT_SHIFT(DSRL, DSRL32, SRL, DSRLV, SRLV);
return SLJIT_SUCCESS;
case SLJIT_ASHR:
EMIT_SHIFT(DSRA, DSRA32, SRA, DSRAV, SRAV);
return SLJIT_SUCCESS;
}
SLJIT_UNREACHABLE();
return SLJIT_SUCCESS;
}
static SLJIT_INLINE sljit_s32 emit_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw init_value)
{
FAIL_IF(push_inst(compiler, LUI | T(dst) | IMM(init_value >> 48), DR(dst)));
FAIL_IF(push_inst(compiler, ORI | S(dst) | T(dst) | IMM(init_value >> 32), DR(dst)));
FAIL_IF(push_inst(compiler, DSLL | T(dst) | D(dst) | SH_IMM(16), DR(dst)));
FAIL_IF(push_inst(compiler, ORI | S(dst) | T(dst) | IMM(init_value >> 16), DR(dst)));
FAIL_IF(push_inst(compiler, DSLL | T(dst) | D(dst) | SH_IMM(16), DR(dst)));
return push_inst(compiler, ORI | S(dst) | T(dst) | IMM(init_value), DR(dst));
}
SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_target, sljit_sw executable_offset)
{
sljit_ins *inst = (sljit_ins *)addr;
inst[0] = (inst[0] & 0xffff0000) | ((new_target >> 48) & 0xffff);
inst[1] = (inst[1] & 0xffff0000) | ((new_target >> 32) & 0xffff);
inst[3] = (inst[3] & 0xffff0000) | ((new_target >> 16) & 0xffff);
inst[5] = (inst[5] & 0xffff0000) | (new_target & 0xffff);
inst = (sljit_ins *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
SLJIT_CACHE_FLUSH(inst, inst + 6);
}
SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant, sljit_sw executable_offset)
{
sljit_ins *inst = (sljit_ins *)addr;
inst[0] = (inst[0] & 0xffff0000) | ((new_constant >> 48) & 0xffff);
inst[1] = (inst[1] & 0xffff0000) | ((new_constant >> 32) & 0xffff);
inst[3] = (inst[3] & 0xffff0000) | ((new_constant >> 16) & 0xffff);
inst[5] = (inst[5] & 0xffff0000) | (new_constant & 0xffff);
inst = (sljit_ins *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
SLJIT_CACHE_FLUSH(inst, inst + 6);
}
static sljit_s32 call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types, sljit_ins *ins_ptr)
{
sljit_s32 arg_count = 0;
sljit_s32 word_arg_count = 0;
sljit_s32 float_arg_count = 0;
sljit_s32 types = 0;
sljit_ins prev_ins = NOP;
sljit_ins ins = NOP;
SLJIT_ASSERT(reg_map[TMP_REG1] == 4 && freg_map[TMP_FREG1] == 12);
arg_types >>= SLJIT_DEF_SHIFT;
while (arg_types) {
types = (types << SLJIT_DEF_SHIFT) | (arg_types & SLJIT_DEF_MASK);
switch (arg_types & SLJIT_DEF_MASK) {
case SLJIT_ARG_TYPE_F32:
case SLJIT_ARG_TYPE_F64:
arg_count++;
float_arg_count++;
break;
default:
arg_count++;
word_arg_count++;
break;
}
arg_types >>= SLJIT_DEF_SHIFT;
}
while (types) {
switch (types & SLJIT_DEF_MASK) {
case SLJIT_ARG_TYPE_F32:
if (arg_count != float_arg_count)
ins = MOV_S | FMT_S | FS(float_arg_count) | FD(arg_count);
else if (arg_count == 1)
ins = MOV_S | FMT_S | FS(SLJIT_FR0) | FD(TMP_FREG1);
arg_count--;
float_arg_count--;
break;
case SLJIT_ARG_TYPE_F64:
if (arg_count != float_arg_count)
ins = MOV_S | FMT_D | FS(float_arg_count) | FD(arg_count);
else if (arg_count == 1)
ins = MOV_S | FMT_D | FS(SLJIT_FR0) | FD(TMP_FREG1);
arg_count--;
float_arg_count--;
break;
default:
if (arg_count != word_arg_count)
ins = DADDU | S(word_arg_count) | TA(0) | D(arg_count);
else if (arg_count == 1)
ins = DADDU | S(SLJIT_R0) | TA(0) | DA(4);
arg_count--;
word_arg_count--;
break;
}
if (ins != NOP) {
if (prev_ins != NOP)
FAIL_IF(push_inst(compiler, prev_ins, MOVABLE_INS));
prev_ins = ins;
ins = NOP;
}
types >>= SLJIT_DEF_SHIFT;
}
*ins_ptr = prev_ins;
return SLJIT_SUCCESS;
}
SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_call(struct sljit_compiler *compiler, sljit_s32 type,
sljit_s32 arg_types)
{
struct sljit_jump *jump;
sljit_ins ins;
CHECK_ERROR_PTR();
CHECK_PTR(check_sljit_emit_call(compiler, type, arg_types));
jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
PTR_FAIL_IF(!jump);
set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
type &= 0xff;
PTR_FAIL_IF(call_with_args(compiler, arg_types, &ins));
SLJIT_ASSERT(DR(PIC_ADDR_REG) == 25 && PIC_ADDR_REG == TMP_REG2);
PTR_FAIL_IF(emit_const(compiler, PIC_ADDR_REG, 0));
jump->flags |= IS_JAL | IS_CALL;
PTR_FAIL_IF(push_inst(compiler, JALR | S(PIC_ADDR_REG) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
jump->addr = compiler->size;
PTR_FAIL_IF(push_inst(compiler, ins, UNMOVABLE_INS));
return jump;
}
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_icall(struct sljit_compiler *compiler, sljit_s32 type,
sljit_s32 arg_types,
sljit_s32 src, sljit_sw srcw)
{
sljit_ins ins;
CHECK_ERROR();
CHECK(check_sljit_emit_icall(compiler, type, arg_types, src, srcw));
SLJIT_ASSERT(DR(PIC_ADDR_REG) == 25 && PIC_ADDR_REG == TMP_REG2);
if (src & SLJIT_IMM)
FAIL_IF(load_immediate(compiler, DR(PIC_ADDR_REG), srcw));
else if (FAST_IS_REG(src))
FAIL_IF(push_inst(compiler, DADDU | S(src) | TA(0) | D(PIC_ADDR_REG), DR(PIC_ADDR_REG)));
else if (src & SLJIT_MEM) {
ADJUST_LOCAL_OFFSET(src, srcw);
FAIL_IF(emit_op_mem(compiler, WORD_DATA | LOAD_DATA, DR(PIC_ADDR_REG), src, srcw));
}
FAIL_IF(call_with_args(compiler, arg_types, &ins));
/* Register input. */
FAIL_IF(push_inst(compiler, JALR | S(PIC_ADDR_REG) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
return push_inst(compiler, ins, UNMOVABLE_INS);
}
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