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https://github.com/c64scene-ar/llvm-6502.git
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[FaultMaps] Move FaultMapParser to Object/
Summary: That way llvm-objdump can rely on it without adding an extra dependency on CodeGen. This change duplicates the FaultKind enum and the code that serializes it to a string. I could not figure out a way to get around this without adding a new dependency to Object Reviewers: rafael, ab Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D10619 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240364 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -12,8 +12,6 @@
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/MC/MCSymbol.h"
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#include "llvm/Support/Endian.h"
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#include "llvm/Support/Format.h"
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#include <vector>
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#include <map>
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@ -71,150 +69,6 @@ private:
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void emitFunctionInfo(const MCSymbol *FnLabel, const FunctionFaultInfos &FFI);
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};
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/// A parser for the __llvm_faultmaps section generated by the FaultMaps class
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/// above. This parser is version locked with with the __llvm_faultmaps section
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/// generated by the version of LLVM that includes it. No guarantees are made
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/// with respect to forward or backward compatibility.
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class FaultMapParser {
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typedef uint8_t FaultMapVersionType;
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static const size_t FaultMapVersionOffset = 0;
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typedef uint8_t Reserved0Type;
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static const size_t Reserved0Offset =
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FaultMapVersionOffset + sizeof(FaultMapVersionType);
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typedef uint16_t Reserved1Type;
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static const size_t Reserved1Offset = Reserved0Offset + sizeof(Reserved0Type);
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typedef uint32_t NumFunctionsType;
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static const size_t NumFunctionsOffset =
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Reserved1Offset + sizeof(Reserved1Type);
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static const size_t FunctionInfosOffset =
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NumFunctionsOffset + sizeof(NumFunctionsType);
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const uint8_t *P;
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const uint8_t *E;
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template <typename T> static T read(const uint8_t *P, const uint8_t *E) {
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assert(P + sizeof(T) <= E && "out of bounds read!");
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return support::endian::read<T, support::little, 1>(P);
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}
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public:
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class FunctionFaultInfoAccessor {
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typedef uint32_t FaultKindType;
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static const size_t FaultKindOffset = 0;
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typedef uint32_t FaultingPCOffsetType;
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static const size_t FaultingPCOffsetOffset =
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FaultKindOffset + sizeof(FaultKindType);
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typedef uint32_t HandlerPCOffsetType;
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static const size_t HandlerPCOffsetOffset =
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FaultingPCOffsetOffset + sizeof(FaultingPCOffsetType);
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const uint8_t *P;
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const uint8_t *E;
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public:
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static const size_t Size =
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HandlerPCOffsetOffset + sizeof(HandlerPCOffsetType);
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explicit FunctionFaultInfoAccessor(const uint8_t *P, const uint8_t *E)
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: P(P), E(E) {}
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FaultKindType getFaultKind() const {
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return read<FaultKindType>(P + FaultKindOffset, E);
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}
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FaultingPCOffsetType getFaultingPCOffset() const {
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return read<FaultingPCOffsetType>(P + FaultingPCOffsetOffset, E);
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}
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HandlerPCOffsetType getHandlerPCOffset() const {
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return read<HandlerPCOffsetType>(P + HandlerPCOffsetOffset, E);
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}
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};
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class FunctionInfoAccessor {
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typedef uint64_t FunctionAddrType;
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static const size_t FunctionAddrOffset = 0;
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typedef uint32_t NumFaultingPCsType;
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static const size_t NumFaultingPCsOffset =
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FunctionAddrOffset + sizeof(FunctionAddrType);
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typedef uint32_t ReservedType;
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static const size_t ReservedOffset =
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NumFaultingPCsOffset + sizeof(NumFaultingPCsType);
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static const size_t FunctionFaultInfosOffset =
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ReservedOffset + sizeof(ReservedType);
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static const size_t FunctionInfoHeaderSize = FunctionFaultInfosOffset;
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const uint8_t *P;
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const uint8_t *E;
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public:
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FunctionInfoAccessor() : P(nullptr), E(nullptr) {}
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explicit FunctionInfoAccessor(const uint8_t *P, const uint8_t *E)
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: P(P), E(E) {}
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FunctionAddrType getFunctionAddr() const {
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return read<FunctionAddrType>(P + FunctionAddrOffset, E);
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}
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NumFaultingPCsType getNumFaultingPCs() const {
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return read<NumFaultingPCsType>(P + NumFaultingPCsOffset, E);
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}
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FunctionFaultInfoAccessor getFunctionFaultInfoAt(uint32_t Index) const {
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assert(Index < getNumFaultingPCs() && "index out of bounds!");
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const uint8_t *Begin = P + FunctionFaultInfosOffset +
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FunctionFaultInfoAccessor::Size * Index;
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return FunctionFaultInfoAccessor(Begin, E);
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}
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FunctionInfoAccessor getNextFunctionInfo() const {
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size_t MySize = FunctionInfoHeaderSize +
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getNumFaultingPCs() * FunctionFaultInfoAccessor::Size;
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const uint8_t *Begin = P + MySize;
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assert(Begin < E && "out of bounds!");
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return FunctionInfoAccessor(Begin, E);
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}
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};
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explicit FaultMapParser(const uint8_t *Begin, const uint8_t *End)
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: P(Begin), E(End) {}
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FaultMapVersionType getFaultMapVersion() const {
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auto Version = read<FaultMapVersionType>(P + FaultMapVersionOffset, E);
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assert(Version == 1 && "only version 1 supported!");
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return Version;
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}
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NumFunctionsType getNumFunctions() const {
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return read<NumFunctionsType>(P + NumFunctionsOffset, E);
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}
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FunctionInfoAccessor getFirstFunctionInfo() const {
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const uint8_t *Begin = P + FunctionInfosOffset;
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return FunctionInfoAccessor(Begin, E);
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}
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};
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raw_ostream &
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operator<<(raw_ostream &OS, const FaultMapParser::FunctionFaultInfoAccessor &);
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raw_ostream &operator<<(raw_ostream &OS,
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const FaultMapParser::FunctionInfoAccessor &);
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raw_ostream &operator<<(raw_ostream &OS, const FaultMapParser &);
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} // namespace llvm
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#endif
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167
include/llvm/Object/FaultMapParser.h
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167
include/llvm/Object/FaultMapParser.h
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@ -0,0 +1,167 @@
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//===-- FaultMapParser.h - Parser for the "FaultMaps" section --*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/Endian.h"
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#include "llvm/Support/raw_ostream.h"
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#ifndef LLVM_OBJECT_FAULTMAPPARSER_H
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#define LLVM_OBJECT_FAULTMAPPARSER_H
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namespace llvm {
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/// A parser for the __llvm_faultmaps section generated by the FaultMaps class
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/// declared in llvm/CodeGen/FaultMaps.h. This parser is version locked with
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/// with the __llvm_faultmaps section generated by the version of LLVM that
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/// includes it. No guarantees are made with respect to forward or backward
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/// compatibility.
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class FaultMapParser {
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typedef uint8_t FaultMapVersionType;
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static const size_t FaultMapVersionOffset = 0;
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typedef uint8_t Reserved0Type;
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static const size_t Reserved0Offset =
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FaultMapVersionOffset + sizeof(FaultMapVersionType);
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typedef uint16_t Reserved1Type;
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static const size_t Reserved1Offset = Reserved0Offset + sizeof(Reserved0Type);
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typedef uint32_t NumFunctionsType;
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static const size_t NumFunctionsOffset =
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Reserved1Offset + sizeof(Reserved1Type);
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static const size_t FunctionInfosOffset =
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NumFunctionsOffset + sizeof(NumFunctionsType);
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const uint8_t *P;
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const uint8_t *E;
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template <typename T> static T read(const uint8_t *P, const uint8_t *E) {
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assert(P + sizeof(T) <= E && "out of bounds read!");
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return support::endian::read<T, support::little, 1>(P);
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}
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public:
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enum FaultKind { FaultingLoad = 1, FaultKindMax };
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class FunctionFaultInfoAccessor {
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typedef uint32_t FaultKindType;
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static const size_t FaultKindOffset = 0;
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typedef uint32_t FaultingPCOffsetType;
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static const size_t FaultingPCOffsetOffset =
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FaultKindOffset + sizeof(FaultKindType);
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typedef uint32_t HandlerPCOffsetType;
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static const size_t HandlerPCOffsetOffset =
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FaultingPCOffsetOffset + sizeof(FaultingPCOffsetType);
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const uint8_t *P;
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const uint8_t *E;
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public:
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static const size_t Size =
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HandlerPCOffsetOffset + sizeof(HandlerPCOffsetType);
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explicit FunctionFaultInfoAccessor(const uint8_t *P, const uint8_t *E)
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: P(P), E(E) {}
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FaultKindType getFaultKind() const {
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return read<FaultKindType>(P + FaultKindOffset, E);
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}
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FaultingPCOffsetType getFaultingPCOffset() const {
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return read<FaultingPCOffsetType>(P + FaultingPCOffsetOffset, E);
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}
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HandlerPCOffsetType getHandlerPCOffset() const {
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return read<HandlerPCOffsetType>(P + HandlerPCOffsetOffset, E);
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}
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};
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class FunctionInfoAccessor {
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typedef uint64_t FunctionAddrType;
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static const size_t FunctionAddrOffset = 0;
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typedef uint32_t NumFaultingPCsType;
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static const size_t NumFaultingPCsOffset =
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FunctionAddrOffset + sizeof(FunctionAddrType);
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typedef uint32_t ReservedType;
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static const size_t ReservedOffset =
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NumFaultingPCsOffset + sizeof(NumFaultingPCsType);
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static const size_t FunctionFaultInfosOffset =
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ReservedOffset + sizeof(ReservedType);
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static const size_t FunctionInfoHeaderSize = FunctionFaultInfosOffset;
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const uint8_t *P;
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const uint8_t *E;
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public:
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FunctionInfoAccessor() : P(nullptr), E(nullptr) {}
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explicit FunctionInfoAccessor(const uint8_t *P, const uint8_t *E)
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: P(P), E(E) {}
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FunctionAddrType getFunctionAddr() const {
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return read<FunctionAddrType>(P + FunctionAddrOffset, E);
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}
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NumFaultingPCsType getNumFaultingPCs() const {
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return read<NumFaultingPCsType>(P + NumFaultingPCsOffset, E);
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}
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FunctionFaultInfoAccessor getFunctionFaultInfoAt(uint32_t Index) const {
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assert(Index < getNumFaultingPCs() && "index out of bounds!");
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const uint8_t *Begin = P + FunctionFaultInfosOffset +
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FunctionFaultInfoAccessor::Size * Index;
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return FunctionFaultInfoAccessor(Begin, E);
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}
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FunctionInfoAccessor getNextFunctionInfo() const {
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size_t MySize = FunctionInfoHeaderSize +
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getNumFaultingPCs() * FunctionFaultInfoAccessor::Size;
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const uint8_t *Begin = P + MySize;
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assert(Begin < E && "out of bounds!");
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return FunctionInfoAccessor(Begin, E);
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}
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};
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explicit FaultMapParser(const uint8_t *Begin, const uint8_t *End)
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: P(Begin), E(End) {}
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FaultMapVersionType getFaultMapVersion() const {
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auto Version = read<FaultMapVersionType>(P + FaultMapVersionOffset, E);
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assert(Version == 1 && "only version 1 supported!");
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return Version;
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}
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NumFunctionsType getNumFunctions() const {
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return read<NumFunctionsType>(P + NumFunctionsOffset, E);
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}
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FunctionInfoAccessor getFirstFunctionInfo() const {
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const uint8_t *Begin = P + FunctionInfosOffset;
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return FunctionInfoAccessor(Begin, E);
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}
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};
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raw_ostream &
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operator<<(raw_ostream &OS, const FaultMapParser::FunctionFaultInfoAccessor &);
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raw_ostream &operator<<(raw_ostream &OS,
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const FaultMapParser::FunctionInfoAccessor &);
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raw_ostream &operator<<(raw_ostream &OS, const FaultMapParser &);
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} // namespace llvm
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#endif
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@ -112,39 +112,3 @@ const char *FaultMaps::faultTypeToString(FaultMaps::FaultKind FT) {
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return "FaultingLoad";
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}
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}
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raw_ostream &llvm::
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operator<<(raw_ostream &OS,
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const FaultMapParser::FunctionFaultInfoAccessor &FFI) {
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OS << "Fault kind: "
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<< FaultMaps::faultTypeToString((FaultMaps::FaultKind)FFI.getFaultKind())
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<< ", faulting PC offset: " << FFI.getFaultingPCOffset()
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<< ", handling PC offset: " << FFI.getHandlerPCOffset();
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return OS;
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}
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raw_ostream &llvm::
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operator<<(raw_ostream &OS, const FaultMapParser::FunctionInfoAccessor &FI) {
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OS << "FunctionAddress: " << format_hex(FI.getFunctionAddr(), 8)
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<< ", NumFaultingPCs: " << FI.getNumFaultingPCs() << "\n";
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for (unsigned i = 0, e = FI.getNumFaultingPCs(); i != e; ++i)
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OS << FI.getFunctionFaultInfoAt(i) << "\n";
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return OS;
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}
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raw_ostream &llvm::operator<<(raw_ostream &OS, const FaultMapParser &FMP) {
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OS << "Version: " << format_hex(FMP.getFaultMapVersion(), 2) << "\n";
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OS << "NumFunctions: " << FMP.getNumFunctions() << "\n";
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if (FMP.getNumFunctions() == 0)
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return OS;
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FaultMapParser::FunctionInfoAccessor FI;
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for (unsigned i = 0, e = FMP.getNumFunctions(); i != e; ++i) {
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FI = (i == 0) ? FMP.getFirstFunctionInfo() : FI.getNextFunctionInfo();
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OS << FI;
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}
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return OS;
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}
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@ -8,6 +8,7 @@ add_llvm_library(LLVMObject
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ELFObjectFile.cpp
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ELFYAML.cpp
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Error.cpp
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FaultMapParser.cpp
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IRObjectFile.cpp
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MachOObjectFile.cpp
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MachOUniversal.cpp
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61
lib/Object/FaultMapParser.cpp
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61
lib/Object/FaultMapParser.cpp
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//===----------------------- FaultMapParser.cpp ---------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Object/FaultMapParser.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/Format.h"
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using namespace llvm;
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const char *faultKindToString(FaultMapParser::FaultKind FT) {
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switch (FT) {
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default:
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llvm_unreachable("unhandled fault type!");
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case FaultMapParser::FaultingLoad:
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return "FaultingLoad";
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}
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}
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raw_ostream &llvm::
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operator<<(raw_ostream &OS,
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const FaultMapParser::FunctionFaultInfoAccessor &FFI) {
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OS << "Fault kind: "
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<< faultKindToString((FaultMapParser::FaultKind)FFI.getFaultKind())
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<< ", faulting PC offset: " << FFI.getFaultingPCOffset()
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<< ", handling PC offset: " << FFI.getHandlerPCOffset();
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return OS;
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}
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raw_ostream &llvm::
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operator<<(raw_ostream &OS, const FaultMapParser::FunctionInfoAccessor &FI) {
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OS << "FunctionAddress: " << format_hex(FI.getFunctionAddr(), 8)
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<< ", NumFaultingPCs: " << FI.getNumFaultingPCs() << "\n";
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for (unsigned i = 0, e = FI.getNumFaultingPCs(); i != e; ++i)
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OS << FI.getFunctionFaultInfoAt(i) << "\n";
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return OS;
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}
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raw_ostream &llvm::operator<<(raw_ostream &OS, const FaultMapParser &FMP) {
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OS << "Version: " << format_hex(FMP.getFaultMapVersion(), 2) << "\n";
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OS << "NumFunctions: " << FMP.getNumFunctions() << "\n";
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if (FMP.getNumFunctions() == 0)
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return OS;
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FaultMapParser::FunctionInfoAccessor FI;
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for (unsigned i = 0, e = FMP.getNumFunctions(); i != e; ++i) {
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FI = (i == 0) ? FMP.getFirstFunctionInfo() : FI.getNextFunctionInfo();
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OS << FI;
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}
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return OS;
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}
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@ -21,7 +21,6 @@
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/ADT/Triple.h"
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#include "llvm/CodeGen/FaultMaps.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCDisassembler.h"
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@ -35,6 +34,7 @@
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#include "llvm/MC/MCSubtargetInfo.h"
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#include "llvm/Object/Archive.h"
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#include "llvm/Object/ELFObjectFile.h"
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#include "llvm/Object/FaultMapParser.h"
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#include "llvm/Object/COFF.h"
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#include "llvm/Object/MachO.h"
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#include "llvm/Object/ObjectFile.h"
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