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X86: Make the cvti2f microop sign extend its integer source correctly.

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The code was using the wrong bit as the sign bit. Other similar bits of code
seem to be correct.
This commit is contained in:
Gabe Black 2010-05-12 00:51:35 -07:00
parent cc76842f83
commit c4497dbf03
1 changed files with 2 additions and 1 deletions
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src/arch/x86/isa/microops/mediaop.isa
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@ -1294,7 +1294,8 @@ let {{
int srcLoIndex = srcStart + (i + 0) * srcSizeBits;
uint64_t argBits = bits(FpSrcReg1.uqw, srcHiIndex, srcLoIndex);
int64_t sArg = argBits | (0 - (argBits & (ULL(1) << srcHiIndex)));
int64_t sArg = argBits |
(0 - (argBits & (ULL(1) << (srcSizeBits - 1))));
double arg = sArg;
if (destSize == 4) {