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| author | Gabe Black <gblack@eecs.umich.edu> | 2009-08-05 02:56:38 -0700 |
|---|---|---|
| committer | Gabe Black <gblack@eecs.umich.edu> | 2009-08-05 02:56:38 -0700 |
| commit | 22a5f66820b9c2399898a7ba741ecda49a3c235d (patch) | |
| tree | 3da3869a3ab82bdbb1377585bdf61c1a2c885f0c /src | |
| parent | df2c862a078e4060017b150656a473b2fb84598e (diff) | |
| download | gem5-22a5f66820b9c2399898a7ba741ecda49a3c235d.tar.xz | |
X86: Fix the carry flag for shl.
Diffstat (limited to 'src')
| -rw-r--r-- | src/arch/x86/isa/microops/regop.isa | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/arch/x86/isa/microops/regop.isa b/src/arch/x86/isa/microops/regop.isa index 698216139..ac380f34b 100644 --- a/src/arch/x86/isa/microops/regop.isa +++ b/src/arch/x86/isa/microops/regop.isa @@ -648,8 +648,10 @@ let {{ ccFlagBits = ccFlagBits & ~(ext & (CFBit | ECFBit | OFBit)); int CFBits = 0; //Figure out if we -would- set the CF bits if requested. - if (bits(SrcReg1, dataSize * 8 - shiftAmt)) + if (shiftAmt <= dataSize * 8 && + bits(SrcReg1, dataSize * 8 - shiftAmt)) { CFBits = 1; + } //If some combination of the CF bits need to be set, set them. if ((ext & (CFBit | ECFBit)) && CFBits) ccFlagBits = ccFlagBits | (ext & (CFBit | ECFBit)); |