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authorGabe Black <gblack@eecs.umich.edu>2009-08-17 20:15:16 -0700
committerGabe Black <gblack@eecs.umich.edu>2009-08-17 20:15:16 -0700
commit200fed31de52ec783006bb1d7c1dbcc4112e7fb3 (patch)
tree306b3da0de09db307f00ce3593f43d4a9c73f287 /src/arch/x86
parentcf2fc2613d7b80f72e886fb89ab7e347889994fd (diff)
downloadgem5-200fed31de52ec783006bb1d7c1dbcc4112e7fb3.tar.xz
X86: Let the integer multiply microop use every other possible source value.
Diffstat (limited to 'src/arch/x86')
-rw-r--r--src/arch/x86/isa/microops/mediaop.isa11
1 files changed, 9 insertions, 2 deletions
diff --git a/src/arch/x86/isa/microops/mediaop.isa b/src/arch/x86/isa/microops/mediaop.isa
index 52292cbd1..7e7016368 100644
--- a/src/arch/x86/isa/microops/mediaop.isa
+++ b/src/arch/x86/isa/microops/mediaop.isa
@@ -919,8 +919,15 @@ let {{
uint64_t result = FpDestReg.uqw;
for (int i = 0; i < items; i++) {
- int srcHiIndex = (i + 1) * srcBits - 1;
- int srcLoIndex = (i + 0) * srcBits;
+ int offset = 0;
+ if (ext & 16) {
+ if (ext & 32)
+ offset = i * (destBits - srcBits);
+ else
+ offset = i * (destBits - srcBits) + srcBits;
+ }
+ int srcHiIndex = (i + 1) * srcBits - 1 + offset;
+ int srcLoIndex = (i + 0) * srcBits + offset;
uint64_t arg1Bits = bits(FpSrcReg1.uqw, srcHiIndex, srcLoIndex);
uint64_t arg2Bits = bits(FpSrcReg2.uqw, srcHiIndex, srcLoIndex);
uint64_t resBits;