diff --git a/src/arch/sparc/faults.cc b/src/arch/sparc/faults.cc
index 6bca6adc5..da7fc730d 100644
--- a/src/arch/sparc/faults.cc
+++ b/src/arch/sparc/faults.cc
@@ -399,11 +399,6 @@ void PowerOnReset::invoke(ThreadContext * tc)
 
 #if !FULL_SYSTEM
 
-void TrapInstruction::invoke(ThreadContext * tc)
-{
-    // Should be handled in ISA.
-}
-
 void SpillNNormal::invoke(ThreadContext *tc)
 {
     doNormalFault(tc, trapType());
diff --git a/src/arch/sparc/faults.hh b/src/arch/sparc/faults.hh
index c087365a2..0c7106707 100644
--- a/src/arch/sparc/faults.hh
+++ b/src/arch/sparc/faults.hh
@@ -604,17 +604,12 @@ class TrapInstruction : public EnumeratedFault
     static TrapType _baseTrapType;
     static FaultPriority _priority;
     static FaultStat _count;
-    uint64_t syscall_num;
     TrapType baseTrapType() {return _baseTrapType;}
   public:
-    TrapInstruction(uint32_t n, uint64_t syscall) :
-        EnumeratedFault(n), syscall_num(syscall) {;}
+    TrapInstruction(int32_t n) : EnumeratedFault(n) {;}
     FaultName name() {return _name;}
     FaultPriority priority() {return _priority;}
     FaultStat & countStat() {return _count;}
-#if !FULL_SYSTEM
-    void invoke(ThreadContext * tc);
-#endif
 };
 
 
diff --git a/src/arch/sparc/isa/decoder.isa b/src/arch/sparc/isa/decoder.isa
index 33352cb2c..a5f43367d 100644
--- a/src/arch/sparc/isa/decoder.isa
+++ b/src/arch/sparc/isa/decoder.isa
@@ -726,7 +726,7 @@ decode OP default Unknown::unknown()
 #if FULL_SYSTEM
                         int lTrapNum = I ? (Rs1 + SW_TRAP) : (Rs1 + Rs2);
                         DPRINTF(Sparc, "The trap number is %d\n", lTrapNum);
-                        fault = new TrapInstruction(lTrapNum, R1);
+                        fault = new TrapInstruction(lTrapNum);
 #else
                         DPRINTF(Sparc, "The syscall number is %d\n", R1);
                         xc->syscall(R1);
@@ -739,7 +739,7 @@ decode OP default Unknown::unknown()
 #if FULL_SYSTEM
                         int lTrapNum = I ? (Rs1 + SW_TRAP) : (Rs1 + Rs2);
                         DPRINTF(Sparc, "The trap number is %d\n", lTrapNum);
-                        fault = new TrapInstruction(lTrapNum, R1);
+                        fault = new TrapInstruction(lTrapNum);
 #else
                         DPRINTF(Sparc, "The syscall number is %d\n", R1);
                         xc->syscall(R1);