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fixed FUZ handling in SSE code

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This commit is contained in:
Stanislav Shwartsman 2011-03-11 10:09:23 +00:00
parent 661ef24f6f
commit b39f1092ca
1 changed files with 10 additions and 6 deletions
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16
bochs/fpu/softfloat-round-pack.cc
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@ -223,12 +223,14 @@ float32 roundAndPackFloat32(int zSign, Bit16s zExp, Bit32u zSig, float_status_t
zSig = shift32RightJamming(zSig, -zExp); zSig = shift32RightJamming(zSig, -zExp);
zExp = 0; zExp = 0;
roundBits = zSig & roundMask; roundBits = zSig & roundMask;
if (isTiny && (roundBits || !float_exception_masked(status, float_flag_underflow))) { if (isTiny) {
float_raise(status, float_flag_underflow);
if(get_flush_underflow_to_zero(status)) { if(get_flush_underflow_to_zero(status)) {
float_raise(status, float_flag_inexact); float_raise(status, float_flag_underflow | float_flag_inexact);
return packFloat32(zSign, 0, 0); return packFloat32(zSign, 0, 0);
} }
if (roundBits || !float_exception_masked(status, float_flag_underflow)) {
float_raise(status, float_flag_underflow);
}
} }
} }
} }
@ -327,12 +329,14 @@ float64 roundAndPackFloat64(int zSign, Bit16s zExp, Bit64u zSig, float_status_t
zSig = shift64RightJamming(zSig, -zExp); zSig = shift64RightJamming(zSig, -zExp);
zExp = 0; zExp = 0;
roundBits = (Bit16s)(zSig & 0x3FF); roundBits = (Bit16s)(zSig & 0x3FF);
if (isTiny && (roundBits || !float_exception_masked(status, float_flag_underflow))) { if (isTiny) {
float_raise(status, float_flag_underflow);
if(get_flush_underflow_to_zero(status)) { if(get_flush_underflow_to_zero(status)) {
float_raise(status, float_flag_inexact); float_raise(status, float_flag_underflow | float_flag_inexact);
return packFloat64(zSign, 0, 0); return packFloat64(zSign, 0, 0);
} }
if (roundBits || !float_exception_masked(status, float_flag_underflow)) {
float_raise(status, float_flag_underflow);
}
} }
} }
} }