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78 lines
2.0 KiB
C++
78 lines
2.0 KiB
C++
//===- FaultMaps.h - The "FaultMaps" section --------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CODEGEN_FAULTMAPS_H
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#define LLVM_CODEGEN_FAULTMAPS_H
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#include "llvm/MC/MCSymbol.h"
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#include "llvm/Support/Endian.h"
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#include <map>
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#include <vector>
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namespace llvm {
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class AsmPrinter;
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class MCExpr;
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class FaultMaps {
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public:
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enum FaultKind {
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FaultingLoad = 1,
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FaultingLoadStore,
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FaultingStore,
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FaultKindMax
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};
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explicit FaultMaps(AsmPrinter &AP);
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static const char *faultTypeToString(FaultKind);
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void recordFaultingOp(FaultKind FaultTy, const MCSymbol *FaultingLabel,
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const MCSymbol *HandlerLabel);
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void serializeToFaultMapSection();
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void reset() {
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FunctionInfos.clear();
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}
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private:
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static const char *WFMP;
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struct FaultInfo {
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FaultKind Kind = FaultKindMax;
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const MCExpr *FaultingOffsetExpr = nullptr;
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const MCExpr *HandlerOffsetExpr = nullptr;
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FaultInfo() = default;
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explicit FaultInfo(FaultMaps::FaultKind Kind, const MCExpr *FaultingOffset,
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const MCExpr *HandlerOffset)
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: Kind(Kind), FaultingOffsetExpr(FaultingOffset),
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HandlerOffsetExpr(HandlerOffset) {}
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};
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using FunctionFaultInfos = std::vector<FaultInfo>;
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// We'd like to keep a stable iteration order for FunctionInfos to help
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// FileCheck based testing.
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struct MCSymbolComparator {
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bool operator()(const MCSymbol *LHS, const MCSymbol *RHS) const {
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return LHS->getName() < RHS->getName();
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}
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};
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std::map<const MCSymbol *, FunctionFaultInfos, MCSymbolComparator>
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FunctionInfos;
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AsmPrinter &AP;
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void emitFunctionInfo(const MCSymbol *FnLabel, const FunctionFaultInfos &FFI);
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};
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} // end namespace llvm
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#endif // LLVM_CODEGEN_FAULTMAPS_H
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