Changed all syscalls to use syscall return object.

[gem5.git] / arch / alpha / isa_traits.hh

diff --git a/arch/alpha/isa_traits.hh b/arch/alpha/isa_traits.hh
index 8db8c699405409ac87f415e5750a89678cfa0210..3208b0cb383449885612f0c890809967adb4d88e 100644 (file)
--- a/arch/alpha/isa_traits.hh
+++ b/arch/alpha/isa_traits.hh
@@ -286,6 +286,43 @@ const int ArgumentReg1 = TheISA::ArgumentReg1;
 const int BranchPredAddrShiftAmt = TheISA::BranchPredAddrShiftAmt;
 const int MaxAddr = (Addr)-1;
 
+#ifndef FULL_SYSTEM
+class SyscallReturn {
+        public:
+           template <class T>
+           SyscallReturn(T v, bool s)
+           {
+               retval = (uint64_t)v;
+               success = s;
+           }
+
+           template <class T>
+           SyscallReturn(T v)
+           {
+               success = (v >= 0);
+               retval = (uint64_t)v;
+           }
+
+           ~SyscallReturn() {}
+
+           SyscallReturn& operator=(const SyscallReturn& s) {
+               retval = s.retval;
+               success = s.success;
+               return *this;
+           }
+
+           uint64_t successful() { return success; }
+           bool value() { return retval; }
+
+
+       private:
+           uint64_t retval;
+           bool success;
+};
+
+#endif
+
+
 #ifdef FULL_SYSTEM
 typedef TheISA::InternalProcReg InternalProcReg;
 const int NumInternalProcRegs  = TheISA::NumInternalProcRegs;