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-rw-r--r--src/arch/x86/isa/microops/regop.isa6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/arch/x86/isa/microops/regop.isa b/src/arch/x86/isa/microops/regop.isa
index 492452a51..200024690 100644
--- a/src/arch/x86/isa/microops/regop.isa
+++ b/src/arch/x86/isa/microops/regop.isa
@@ -1067,9 +1067,15 @@ let {{
"not implemented.\\n");
break;
case SegIntGateCheck:
+ // Check permissions.
if (desc.dpl < m5reg.cpl) {
fault = new GeneralProtection((uint16_t)selector);
}
+ // Make sure the gate's the right type.
+ if (m5reg.mode == LongMode && ((desc.type & 0xe) != 0xe) ||
+ ((desc.type & 0x6) != 0x6)) {
+ fault = new GeneralProtection(0);
+ }
break;
case SegSSCheck:
if (selector.si || selector.ti) {