2 * Copyright (c) 2003-2005 The Regents of The University of Michigan
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32 #include "base/types.hh"
33 #include "cpu/static_inst.hh"
34 #include "sim/stats.hh"
38 typedef const char * FaultName;
39 typedef Stats::Scalar FaultStat;
44 virtual FaultName name() const = 0;
45 virtual void invoke(ThreadContext * tc, const StaticInstPtr &inst =
46 StaticInst::nullStaticInstPtr);
48 virtual ~FaultBase() {};
51 class UnimpFault : public FaultBase
56 UnimpFault(std::string _str)
60 FaultName name() const { return "Unimplemented simulator feature"; }
61 void invoke(ThreadContext * tc, const StaticInstPtr &inst =
62 StaticInst::nullStaticInstPtr);
65 class ReExec : public FaultBase
68 virtual FaultName name() const { return "Re-execution fault"; }
70 void invoke(ThreadContext *tc, const StaticInstPtr &inst =
71 StaticInst::nullStaticInstPtr);
75 * This class is needed to allow system call retries to occur for blocking
76 * system calls in SE mode. A retry fault will be generated by the system call
77 * emulation code if blocking conditions arise; the fault is passed up the
78 * function call chain into the CPU model where it is handled by retrying the
79 * syscall instruction on a later tick.
81 class SyscallRetryFault : public FaultBase
84 virtual FaultName name() const { return "System call retry fault"; }
85 SyscallRetryFault() {}
86 void invoke(ThreadContext *tc, const StaticInstPtr &inst =
87 StaticInst::nullStaticInstPtr);
90 class GenericPageTableFault : public FaultBase
95 FaultName name() const { return "Generic page table fault"; }
96 GenericPageTableFault(Addr va) : vaddr(va) {}
97 void invoke(ThreadContext * tc, const StaticInstPtr &inst =
98 StaticInst::nullStaticInstPtr);
99 Addr getFaultVAddr() const { return vaddr; }
102 class GenericAlignmentFault : public FaultBase
107 FaultName name() const { return "Generic alignment fault"; }
108 GenericAlignmentFault(Addr va) : vaddr(va) {}
109 void invoke(ThreadContext * tc, const StaticInstPtr &inst =
110 StaticInst::nullStaticInstPtr);
111 Addr getFaultVAddr() const { return vaddr; }
114 #endif // __FAULTS_HH__