changeset a7a428f403da in /z/repo/m5
details: http://repo.m5sim.org/m5?cmd=changeset;node=a7a428f403da
description:
X86: Handle rotating right all the way around or more.
diffstat:
1 file changed, 4 insertions(+), 3 deletions(-)
src/arch/x86/isa/microops/regop.isa | 7 ++++---
diffs (18 lines):
diff -r a32abe4e17e1 -r a7a428f403da src/arch/x86/isa/microops/regop.isa
--- a/src/arch/x86/isa/microops/regop.isa Wed Aug 05 02:59:39 2009 -0700
+++ b/src/arch/x86/isa/microops/regop.isa Wed Aug 05 03:00:03 2009 -0700
@@ -727,10 +727,11 @@
code = '''
uint8_t shiftAmt =
(op2 & ((dataSize == 8) ? mask(6) : mask(5)));
- if(shiftAmt)
+ uint8_t realShiftAmt = shiftAmt % (dataSize * 8);
+ if(realShiftAmt)
{
- uint64_t top = psrc1 << (dataSize * 8 - shiftAmt);
- uint64_t bottom = bits(psrc1, dataSize * 8, shiftAmt);
+ uint64_t top = psrc1 << (dataSize * 8 - realShiftAmt);
+ uint64_t bottom = bits(psrc1, dataSize * 8, realShiftAmt);
DestReg = merge(DestReg, top | bottom, dataSize);
}
else
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