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-rw-r--r--src/arch/x86/isa/microops/regop.isa4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/arch/x86/isa/microops/regop.isa b/src/arch/x86/isa/microops/regop.isa
index e0228ec0e..f2a574954 100644
--- a/src/arch/x86/isa/microops/regop.isa
+++ b/src/arch/x86/isa/microops/regop.isa
@@ -525,7 +525,7 @@ let {{
uint64_t hiResult;
uint64_t psrc1_h = psrc1 / shifter;
uint64_t psrc1_l = psrc1 & mask(halfSize);
- uint64_t psrc2_h = op2 / shifter;
+ uint64_t psrc2_h = (op2 / shifter) & mask(halfSize);
uint64_t psrc2_l = op2 & mask(halfSize);
hiResult = ((psrc1_l * psrc2_h + psrc1_h * psrc2_l +
((psrc1_l * psrc2_l) / shifter)) /shifter) +
@@ -545,7 +545,7 @@ let {{
uint64_t shifter = (1ULL << halfSize);
uint64_t psrc1_h = psrc1 / shifter;
uint64_t psrc1_l = psrc1 & mask(halfSize);
- uint64_t psrc2_h = op2 / shifter;
+ uint64_t psrc2_h = (op2 / shifter) & mask(halfSize);
uint64_t psrc2_l = op2 & mask(halfSize);
ProdHi = ((psrc1_l * psrc2_h + psrc1_h * psrc2_l +
((psrc1_l * psrc2_l) / shifter)) / shifter) +