3 files changed, 10 insertions, 1 deletions
diff --git a/src/arch/alpha/isa/decoder.isa b/src/arch/alpha/isa/decoder.isa
index 020e43359..abf6fb24a 100644
--- a/src/arch/alpha/isa/decoder.isa
+++ b/src/arch/alpha/isa/decoder.isa
@@ -840,7 +840,7 @@ decode OPCODE default Unknown::unknown() {
                     exitSimLoop("halt instruction encountered");
                 }}, IsNonSpeculative);
                 0x83: callsys({{
-                    xc->syscall(R0, &fault);
+                    xc->syscall(&fault);
                 }}, IsSerializeAfter, IsNonSpeculative, IsSyscall);
                 // Read uniq reg into ABI return value register (r0)
                 0x9e: rduniq({{ R0 = Runiq; }}, IsIprAccess);
diff --git a/src/arch/alpha/linux/process.cc b/src/arch/alpha/linux/process.cc
index 1ac53a5a0..26d5f26cd 100644
--- a/src/arch/alpha/linux/process.cc
+++ b/src/arch/alpha/linux/process.cc
@@ -620,3 +620,10 @@ AlphaLinuxProcess::getDesc(int callnum)
         return NULL;
     return &syscallDescs[callnum];
 }
+
+void
+AlphaLinuxProcess::syscall(ThreadContext *tc, Fault *fault)
+{
+    doSyscall(tc->readIntReg(0), tc, fault);
+}
+
diff --git a/src/arch/alpha/linux/process.hh b/src/arch/alpha/linux/process.hh
index 46c22d288..991ddbd08 100644
--- a/src/arch/alpha/linux/process.hh
+++ b/src/arch/alpha/linux/process.hh
@@ -42,6 +42,8 @@ class AlphaLinuxProcess : public AlphaProcess
     /// Constructor.
     AlphaLinuxProcess(ProcessParams * params, ObjectFile *objFile);
 
+    void syscall(ThreadContext *tc, Fault *fault) override;
+
     virtual SyscallDesc* getDesc(int callnum);
 
      /// Array of syscall descriptors, indexed by call number.