diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/dynarec/arm64/dynarec_arm64_emit_shift.c | 36 |
1 files changed, 15 insertions, 21 deletions
diff --git a/src/dynarec/arm64/dynarec_arm64_emit_shift.c b/src/dynarec/arm64/dynarec_arm64_emit_shift.c index 2e365748..3199a013 100644 --- a/src/dynarec/arm64/dynarec_arm64_emit_shift.c +++ b/src/dynarec/arm64/dynarec_arm64_emit_shift.c @@ -1022,9 +1022,8 @@ void emit_shrd32c(dynarec_arm_t* dyn, int ninst, rex_t rex, int s1, int s2, uint } IFX(X_OF) { if(c==1) { - LSRxw(s4, s1, rex.w?63:31); - EORw_REG_LSR(s4, s4, xFlags, F_OF); // set if sign changed - BFIw(xFlags, s4, F_OF, 1); + UBFXx(s3, s1, rex.w?63:31, 1); + EORw_REG_LSL(xFlags, xFlags, s3, F_OF); // OF is set if sign changed } } IFX(X_PF) { @@ -1076,9 +1075,8 @@ void emit_shld32c(dynarec_arm_t* dyn, int ninst, rex_t rex, int s1, int s2, uint } IFX(X_OF) { if(c==1) { - LSRxw(s3, s1, rex.w?63:31); - EORxw_REG_LSR(s3, s3, xFlags, F_OF); // OF is set if sign changed - BFIw(xFlags, s3, F_OF, 1); + UBFXx(s3, s1, rex.w?63:31, 1); + EORw_REG_LSL(xFlags, xFlags, s3, F_OF); // OF is set if sign changed } else { BFCw(xFlags, F_OF, 1); } @@ -1127,10 +1125,9 @@ void emit_shrd32(dynarec_arm_t* dyn, int ninst, rex_t rex, int s1, int s2, int s } IFX(X_OF) { CMPSw_U12(s5, 1); - Bcond(cNE, 4+3*4); - LSRxw(s4, s1, rex.w?63:31); - EORw_REG_LSR(s4, s4, xFlags, F_OF); // Set if sign changed - BFIw(xFlags, s4, F_OF, 1); + Bcond(cNE, 4+2*4); + UBFXx(s3, s1, rex.w?63:31, 1); + EORw_REG_LSL(xFlags, xFlags, s3, F_OF); // OF is set if sign changed } IFX(X_PF) { emit_pf(dyn, ninst, s1, s3, s4); @@ -1174,10 +1171,9 @@ void emit_shld32(dynarec_arm_t* dyn, int ninst, rex_t rex, int s1, int s2, int s } IFX(X_OF) { CMPSw_U12(s5, 1); - Bcond(cNE, 4+3*4); - LSRxw(s3, s1, rex.w?63:31); - EORxw_REG_LSR(s3, s3, xFlags, F_OF); // OF is set if sign changed - BFIw(xFlags, s3, F_OF, 1); + Bcond(cNE, 4+2*4); + UBFXx(s3, s1, rex.w?63:31, 1); + EORw_REG_LSL(xFlags, xFlags, s3, F_OF); // OF is set if sign changed } IFX(X_PF) { emit_pf(dyn, ninst, s1, s3, s4); @@ -1219,9 +1215,8 @@ void emit_shrd16c(dynarec_arm_t* dyn, int ninst, int s1, int s2, uint32_t c, int COMP_ZFSF(s1, 16) IFX(X_OF) { if(c==1) { - LSRw(s4, s1, 15); - EORw_REG_LSR(s4, s4, xFlags, F_OF); // set if sign changed - BFIw(xFlags, s4, F_OF, 1); + UBFXw(s3, s1, 15, 1); + EORw_REG_LSL(xFlags, xFlags, s3, F_OF); // OF is set if sign changed } } IFX(X_PF) { @@ -1257,10 +1252,9 @@ void emit_shrd16(dynarec_arm_t* dyn, int ninst, int s1, int s2, int s5, int s3, COMP_ZFSF(s1, 16) IFX(X_OF) { CMPSw_U12(s5, 1); - Bcond(cNE, 4+3*4); - LSRw(s4, s1, 15); - EORw_REG_LSR(s4, s4, xFlags, F_OF); // Set if sign changed - BFIw(xFlags, s4, F_OF, 1); + Bcond(cNE, 4+2*4); + UBFXw(s3, s1, 15, 1); + EORw_REG_LSL(xFlags, xFlags, s3, F_OF); // OF is set if sign changed } IFX(X_PF) { emit_pf(dyn, ninst, s1, s3, s4); |