1 //===-- DIContext.h ---------------------------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines DIContext, an abstract data structure that holds
11 // debug information data.
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_DEBUGINFO_DICONTEXT_H
16 #define LLVM_DEBUGINFO_DICONTEXT_H
18 #include "llvm/ADT/DenseMap.h"
19 #include "llvm/ADT/SmallString.h"
20 #include "llvm/ADT/SmallVector.h"
21 #include "llvm/ADT/StringRef.h"
22 #include "llvm/Object/ObjectFile.h"
23 #include "llvm/Object/RelocVisitor.h"
24 #include "llvm/Support/Casting.h"
25 #include "llvm/Support/DataTypes.h"
31 /// DILineInfo - a format-neutral container for source line information.
33 SmallString<16> FileName;
34 SmallString<16> FunctionName;
39 : FileName("<invalid>"), FunctionName("<invalid>"),
41 DILineInfo(const SmallString<16> &fileName,
42 const SmallString<16> &functionName,
43 uint32_t line, uint32_t column)
44 : FileName(fileName), FunctionName(functionName),
45 Line(line), Column(column) {}
47 const char *getFileName() { return FileName.c_str(); }
48 const char *getFunctionName() { return FunctionName.c_str(); }
49 uint32_t getLine() const { return Line; }
50 uint32_t getColumn() const { return Column; }
52 bool operator==(const DILineInfo &RHS) const {
53 return Line == RHS.Line && Column == RHS.Column &&
54 FileName.equals(RHS.FileName) &&
55 FunctionName.equals(RHS.FunctionName);
57 bool operator!=(const DILineInfo &RHS) const {
58 return !(*this == RHS);
62 typedef SmallVector<std::pair<uint64_t, DILineInfo>, 16> DILineInfoTable;
64 /// DIInliningInfo - a format-neutral container for inlined code description.
65 class DIInliningInfo {
66 SmallVector<DILineInfo, 4> Frames;
69 DILineInfo getFrame(unsigned Index) const {
70 assert(Index < Frames.size());
73 uint32_t getNumberOfFrames() const {
76 void addFrame(const DILineInfo &Frame) {
77 Frames.push_back(Frame);
81 /// DILineInfoSpecifier - controls which fields of DILineInfo container
82 /// should be filled with data.
83 class DILineInfoSpecifier {
84 const uint32_t Flags; // Or'ed flags that set the info we want to fetch.
87 FileLineInfo = 1 << 0,
88 AbsoluteFilePath = 1 << 1,
91 // Use file/line info by default.
92 DILineInfoSpecifier(uint32_t flags = FileLineInfo) : Flags(flags) {}
93 bool needs(Specification spec) const {
94 return (Flags & spec) > 0;
98 /// Selects which debug sections get dumped.
118 // In place of applying the relocations to the data we've read from disk we use
119 // a separate mapping table to the side and checking that at locations in the
120 // dwarf where we expect relocated values. This adds a bit of complexity to the
121 // dwarf parsing/extraction at the benefit of not allocating memory for the
122 // entire size of the debug info sections.
123 typedef DenseMap<uint64_t, std::pair<uint8_t, int64_t> > RelocAddrMap;
130 DIContextKind getKind() const { return Kind; }
132 DIContext(DIContextKind K) : Kind(K) {}
133 virtual ~DIContext();
135 /// getDWARFContext - get a context for binary DWARF data.
136 static DIContext *getDWARFContext(object::ObjectFile *);
138 virtual void dump(raw_ostream &OS, DIDumpType DumpType = DIDT_All) = 0;
140 virtual DILineInfo getLineInfoForAddress(uint64_t Address,
141 DILineInfoSpecifier Specifier = DILineInfoSpecifier()) = 0;
142 virtual DILineInfoTable getLineInfoForAddressRange(uint64_t Address,
143 uint64_t Size, DILineInfoSpecifier Specifier = DILineInfoSpecifier()) = 0;
144 virtual DIInliningInfo getInliningInfoForAddress(uint64_t Address,
145 DILineInfoSpecifier Specifier = DILineInfoSpecifier()) = 0;
147 const DIContextKind Kind;