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) : panicStr(_str) {}
61 return "Unimplemented simulator feature";
63 void invoke(ThreadContext *tc, const StaticInstPtr &inst =
64 StaticInst::nullStaticInstPtr) override;
67 class ReExec : public FaultBase
70 virtual FaultName name() const override { return "Re-execution fault"; }
71 void invoke(ThreadContext *tc, const StaticInstPtr &inst=
72 StaticInst::nullStaticInstPtr) override;
76 * This class is needed to allow system call retries to occur for blocking
77 * system calls in SE mode. A retry fault will be generated by the system call
78 * emulation code if blocking conditions arise; the fault is passed up the
79 * function call chain into the CPU model where it is handled by retrying the
80 * syscall instruction on a later tick.
82 class SyscallRetryFault : public FaultBase
85 FaultName name() const override { return "System call retry fault"; }
86 SyscallRetryFault() {}
87 void invoke(ThreadContext *tc, const StaticInstPtr &inst=
88 StaticInst::nullStaticInstPtr) override;
91 class GenericPageTableFault : public FaultBase
96 FaultName name() const override { return "Generic page table fault"; }
97 GenericPageTableFault(Addr va) : vaddr(va) {}
98 void invoke(ThreadContext *tc, const StaticInstPtr &inst=
99 StaticInst::nullStaticInstPtr) override;
100 Addr getFaultVAddr() const { return vaddr; }
103 class GenericAlignmentFault : public FaultBase
108 FaultName name() const override { return "Generic alignment fault"; }
109 GenericAlignmentFault(Addr va) : vaddr(va) {}
110 void invoke(ThreadContext *tc, const StaticInstPtr &inst=
111 StaticInst::nullStaticInstPtr) override;
112 Addr getFaultVAddr() const { return vaddr; }
115 #endif // __FAULTS_HH__