static int glue(compute_all_shl, SUFFIX)(void)
{
int cf, pf, af, zf, sf, of;
- cf = CC_SRC & 1;
+ cf = (CC_SRC >> (DATA_BITS - 1)) & CC_C;
pf = parity_table[(uint8_t)CC_DST];
af = 0; /* undefined */
zf = ((DATA_TYPE)CC_DST == 0) << 6;
sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
- of = lshift(CC_SRC, 12 - DATA_BITS) & CC_O; /* only meaniful for shr with count == 1 */
+ /* of is defined if shift count == 1 */
+ of = lshift(CC_SRC ^ CC_DST, 12 - DATA_BITS) & CC_O;
return cf | pf | af | zf | sf | of;
}
af = 0; /* undefined */
zf = ((DATA_TYPE)CC_DST == 0) << 6;
sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
- of = 0; /* only meaniful for shr with count == 1 */
+ /* of is defined if shift count == 1 */
+ of = lshift(CC_SRC ^ CC_DST, 12 - DATA_BITS) & CC_O;
return cf | pf | af | zf | sf | of;
}
FORCE_RET();
}
+/* oldies */
+
+#if DATA_BITS >= 16
+
+void OPPROTO glue(op_loopnz, SUFFIX)(void)
+{
+ unsigned int tmp;
+ int eflags;
+ eflags = cc_table[CC_OP].compute_all();
+ tmp = (ECX - 1) & DATA_MASK;
+ ECX = (ECX & ~DATA_MASK) | tmp;
+ if (tmp != 0 && !(eflags & CC_Z))
+ PC = PARAM1;
+ else
+ PC = PARAM2;
+ FORCE_RET();
+}
+
+void OPPROTO glue(op_loopz, SUFFIX)(void)
+{
+ unsigned int tmp;
+ int eflags;
+ eflags = cc_table[CC_OP].compute_all();
+ tmp = (ECX - 1) & DATA_MASK;
+ ECX = (ECX & ~DATA_MASK) | tmp;
+ if (tmp != 0 && (eflags & CC_Z))
+ PC = PARAM1;
+ else
+ PC = PARAM2;
+ FORCE_RET();
+}
+
+void OPPROTO glue(op_loop, SUFFIX)(void)
+{
+ unsigned int tmp;
+ tmp = (ECX - 1) & DATA_MASK;
+ ECX = (ECX & ~DATA_MASK) | tmp;
+ if (tmp != 0)
+ PC = PARAM1;
+ else
+ PC = PARAM2;
+ FORCE_RET();
+}
+
+void OPPROTO glue(op_jecxz, SUFFIX)(void)
+{
+ if ((DATA_TYPE)ECX == 0)
+ PC = PARAM1;
+ else
+ PC = PARAM2;
+ FORCE_RET();
+}
+
+#endif
+
/* various optimized set cases */
void OPPROTO glue(op_setb_T0_sub, SUFFIX)(void)
FORCE_RET();
}
+void OPPROTO glue(glue(op_rol, SUFFIX), _T0_T1)(void)
+{
+ int count;
+ count = T1 & SHIFT_MASK;
+ if (count) {
+ T0 &= DATA_MASK;
+ T0 = (T0 << count) | (T0 >> (DATA_BITS - count));
+ }
+ FORCE_RET();
+}
+
void OPPROTO glue(glue(op_ror, SUFFIX), _T0_T1_cc)(void)
{
int count, src;
FORCE_RET();
}
+void OPPROTO glue(glue(op_ror, SUFFIX), _T0_T1)(void)
+{
+ int count;
+ count = T1 & SHIFT_MASK;
+ if (count) {
+ T0 &= DATA_MASK;
+ T0 = (T0 >> count) | (T0 << (DATA_BITS - count));
+ }
+ FORCE_RET();
+}
+
void OPPROTO glue(glue(op_rcl, SUFFIX), _T0_T1_cc)(void)
{
int count, res, eflags;
{
int count;
count = T1 & 0x1f;
- if (count == 1) {
- CC_SRC = T0;
- T0 = T0 << 1;
- CC_DST = T0;
- CC_OP = CC_OP_ADDB + SHIFT;
- } else if (count) {
- CC_SRC = (DATA_TYPE)T0 >> (DATA_BITS - count);
+ if (count) {
+ CC_SRC = (DATA_TYPE)T0 << (count - 1);
T0 = T0 << count;
CC_DST = T0;
CC_OP = CC_OP_SHLB + SHIFT;
FORCE_RET();
}
+void OPPROTO glue(glue(op_shl, SUFFIX), _T0_T1)(void)
+{
+ int count;
+ count = T1 & 0x1f;
+ T0 = T0 << count;
+ FORCE_RET();
+}
+
void OPPROTO glue(glue(op_shr, SUFFIX), _T0_T1_cc)(void)
{
int count;
CC_SRC = T0 >> (count - 1);
T0 = T0 >> count;
CC_DST = T0;
- CC_OP = CC_OP_SHLB + SHIFT;
+ CC_OP = CC_OP_SARB + SHIFT;
}
FORCE_RET();
}
+void OPPROTO glue(glue(op_shr, SUFFIX), _T0_T1)(void)
+{
+ int count;
+ count = T1 & 0x1f;
+ T0 &= DATA_MASK;
+ T0 = T0 >> count;
+ FORCE_RET();
+}
+
void OPPROTO glue(glue(op_sar, SUFFIX), _T0_T1_cc)(void)
{
int count, src;
count = T1 & 0x1f;
if (count) {
src = (DATA_STYPE)T0;
- CC_SRC = src >> (count - 1);
+ CC_SRC = src >> (count - 1);
T0 = src >> count;
CC_DST = T0;
CC_OP = CC_OP_SARB + SHIFT;
FORCE_RET();
}
+void OPPROTO glue(glue(op_sar, SUFFIX), _T0_T1)(void)
+{
+ int count, src;
+ count = T1 & 0x1f;
+ src = (DATA_STYPE)T0;
+ T0 = src >> count;
+ FORCE_RET();
+}
+
+#if DATA_BITS == 16
+/* XXX: overflow flag might be incorrect in some cases in shldw */
+void OPPROTO glue(glue(op_shld, SUFFIX), _T0_T1_im_cc)(void)
+{
+ int count;
+ unsigned int res;
+ count = PARAM1;
+ T1 &= 0xffff;
+ res = T1 | (T0 << 16);
+ CC_SRC = res >> (32 - count);
+ res <<= count;
+ if (count > 16)
+ res |= T1 << (count - 16);
+ T0 = res >> 16;
+ CC_DST = T0;
+}
+
+void OPPROTO glue(glue(op_shld, SUFFIX), _T0_T1_ECX_cc)(void)
+{
+ int count;
+ unsigned int res;
+ count = ECX & 0x1f;
+ if (count) {
+ T1 &= 0xffff;
+ res = T1 | (T0 << 16);
+ CC_SRC = res >> (32 - count);
+ res <<= count;
+ if (count > 16)
+ res |= T1 << (count - 16);
+ T0 = res >> 16;
+ CC_DST = T0;
+ CC_OP = CC_OP_SARB + SHIFT;
+ }
+}
+
+void OPPROTO glue(glue(op_shrd, SUFFIX), _T0_T1_im_cc)(void)
+{
+ int count;
+ unsigned int res;
+
+ count = PARAM1;
+ res = (T0 & 0xffff) | (T1 << 16);
+ CC_SRC = res >> (count - 1);
+ res >>= count;
+ if (count > 16)
+ res |= T1 << (32 - count);
+ T0 = res;
+ CC_DST = T0;
+}
+
+
+void OPPROTO glue(glue(op_shrd, SUFFIX), _T0_T1_ECX_cc)(void)
+{
+ int count;
+ unsigned int res;
+
+ count = ECX & 0x1f;
+ if (count) {
+ res = (T0 & 0xffff) | (T1 << 16);
+ CC_SRC = res >> (count - 1);
+ res >>= count;
+ if (count > 16)
+ res |= T1 << (32 - count);
+ T0 = res;
+ CC_DST = T0;
+ CC_OP = CC_OP_SARB + SHIFT;
+ }
+}
+#endif
+
+#if DATA_BITS == 32
+void OPPROTO glue(glue(op_shld, SUFFIX), _T0_T1_im_cc)(void)
+{
+ int count;
+ count = PARAM1;
+ T0 &= DATA_MASK;
+ T1 &= DATA_MASK;
+ CC_SRC = T0 << (count - 1);
+ T0 = (T0 << count) | (T1 >> (DATA_BITS - count));
+ CC_DST = T0;
+}
+
+void OPPROTO glue(glue(op_shld, SUFFIX), _T0_T1_ECX_cc)(void)
+{
+ int count;
+ count = ECX & 0x1f;
+ if (count) {
+ T0 &= DATA_MASK;
+ T1 &= DATA_MASK;
+ CC_SRC = T0 << (count - 1);
+ T0 = (T0 << count) | (T1 >> (DATA_BITS - count));
+ CC_DST = T0;
+ CC_OP = CC_OP_SHLB + SHIFT;
+ }
+}
+
+void OPPROTO glue(glue(op_shrd, SUFFIX), _T0_T1_im_cc)(void)
+{
+ int count;
+ count = PARAM1;
+ T0 &= DATA_MASK;
+ T1 &= DATA_MASK;
+ CC_SRC = T0 >> (count - 1);
+ T0 = (T0 >> count) | (T1 << (DATA_BITS - count));
+ CC_DST = T0;
+}
+
+
+void OPPROTO glue(glue(op_shrd, SUFFIX), _T0_T1_ECX_cc)(void)
+{
+ int count;
+ count = ECX & 0x1f;
+ if (count) {
+ T0 &= DATA_MASK;
+ T1 &= DATA_MASK;
+ CC_SRC = T0 >> (count - 1);
+ T0 = (T0 >> count) | (T1 << (DATA_BITS - count));
+ CC_DST = T0;
+ CC_OP = CC_OP_SARB + SHIFT;
+ }
+}
+#endif
+
/* carry add/sub (we only need to set CC_OP differently) */
void OPPROTO glue(glue(op_adc, SUFFIX), _T0_T1_cc)(void)
CC_OP = CC_OP_SUBB + SHIFT + cf * 3;
}
+void OPPROTO glue(glue(op_cmpxchg, SUFFIX), _T0_T1_EAX_cc)(void)
+{
+ CC_SRC = EAX;
+ CC_DST = EAX - T0;
+ if ((DATA_TYPE)CC_DST == 0) {
+ T0 = T1;
+ } else {
+ EAX = (EAX & ~DATA_MASK) | (T0 & DATA_MASK);
+ }
+ FORCE_RET();
+}
+
/* bit operations */
#if DATA_BITS >= 16
T0 ^= (1 << count);
}
+void OPPROTO glue(glue(op_bsf, SUFFIX), _T0_cc)(void)
+{
+ int res, count;
+ res = T0 & DATA_MASK;
+ if (res != 0) {
+ count = 0;
+ while ((res & 1) == 0) {
+ count++;
+ res >>= 1;
+ }
+ T0 = count;
+ CC_DST = 1; /* ZF = 1 */
+ } else {
+ CC_DST = 0; /* ZF = 1 */
+ }
+ FORCE_RET();
+}
+
+void OPPROTO glue(glue(op_bsr, SUFFIX), _T0_cc)(void)
+{
+ int res, count;
+ res = T0 & DATA_MASK;
+ if (res != 0) {
+ count = DATA_BITS - 1;
+ while ((res & SIGN_MASK) == 0) {
+ count--;
+ res <<= 1;
+ }
+ T0 = count;
+ CC_DST = 1; /* ZF = 1 */
+ } else {
+ CC_DST = 0; /* ZF = 1 */
+ }
+ FORCE_RET();
+}
+
#endif
/* string operations */