#ifndef __FAULTS_HH__
#define __FAULTS_HH__
-#include "base/refcnt.hh"
+#include "base/types.hh"
+#include "cpu/static_inst.hh"
#include "sim/stats.hh"
-#include "config/full_system.hh"
-class ExecContext;
-class FaultBase;
-typedef RefCountingPtr<FaultBase> Fault;
+class ThreadContext;
typedef const char * FaultName;
-typedef Stats::Scalar<> FaultStat;
+typedef Stats::Scalar FaultStat;
-// Each class has it's name statically define in _name,
-// and has a virtual function to access it's name.
-// The function is necessary because otherwise, all objects
-// which are being accessed cast as a FaultBase * (namely
-// all faults returned using the Fault type) will use the
-// generic FaultBase name.
-
-class FaultBase : public RefCounted
+class FaultBase
{
public:
- virtual FaultName name() = 0;
-#if FULL_SYSTEM
- virtual void invoke(ExecContext * xc);
-#else
- virtual void invoke(ExecContext * xc);
-#endif
-// template<typename T>
-// bool isA() {return dynamic_cast<T *>(this);}
- virtual bool isMachineCheckFault() {return false;}
- virtual bool isAlignmentFault() {return false;}
-};
+ virtual FaultName name() const = 0;
+ virtual void invoke(ThreadContext * tc, const StaticInstPtr &inst =
+ StaticInst::nullStaticInstPtr);
-FaultBase * const NoFault = 0;
+ virtual ~FaultBase() {};
+};
class UnimpFault : public FaultBase
{
: panicStr(_str)
{ }
- FaultName name() {return "Unimplemented simulator feature";}
- void invoke(ExecContext * xc);
+ FaultName name() const { return "Unimplemented simulator feature"; }
+ void invoke(ThreadContext * tc, const StaticInstPtr &inst =
+ StaticInst::nullStaticInstPtr);
+};
+
+class ReExec : public FaultBase
+{
+ public:
+ virtual FaultName name() const { return "Re-execution fault"; }
+ ReExec() {}
+ void invoke(ThreadContext *tc, const StaticInstPtr &inst =
+ StaticInst::nullStaticInstPtr);
+};
+
+/*
+ * This class is needed to allow system call retries to occur for blocking
+ * system calls in SE mode. A retry fault will be generated by the system call
+ * emulation code if blocking conditions arise; the fault is passed up the
+ * function call chain into the CPU model where it is handled by retrying the
+ * syscall instruction on a later tick.
+ */
+class SyscallRetryFault : public FaultBase
+{
+ public:
+ virtual FaultName name() const { return "System call retry fault"; }
+ SyscallRetryFault() {}
+ void invoke(ThreadContext *tc, const StaticInstPtr &inst =
+ StaticInst::nullStaticInstPtr);
+};
+
+class GenericPageTableFault : public FaultBase
+{
+ private:
+ Addr vaddr;
+ public:
+ FaultName name() const { return "Generic page table fault"; }
+ GenericPageTableFault(Addr va) : vaddr(va) {}
+ void invoke(ThreadContext * tc, const StaticInstPtr &inst =
+ StaticInst::nullStaticInstPtr);
+ Addr getFaultVAddr() const { return vaddr; }
+};
+
+class GenericAlignmentFault : public FaultBase
+{
+ private:
+ Addr vaddr;
+ public:
+ FaultName name() const { return "Generic alignment fault"; }
+ GenericAlignmentFault(Addr va) : vaddr(va) {}
+ void invoke(ThreadContext * tc, const StaticInstPtr &inst =
+ StaticInst::nullStaticInstPtr);
+ Addr getFaultVAddr() const { return vaddr; }
};
#endif // __FAULTS_HH__