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This patch extends the libLLVMDebugInfo which contains a minimalistic DWARF parser:

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1) DIContext is now able to return function name for a given instruction address (besides file/line info).
2) llvm-dwarfdump accepts flag --functions that prints the function name (if address is specified by --address flag).
3) test case that checks the basic functionality of llvm-dwarfdump added

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159512 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alexey Samsonov
2012-07-02 05:54:45 +00:00
parent 9c3d5a70f4
commit 3e25c4a1e3
12 changed files with 174 additions and 31 deletions
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34
include/llvm/DebugInfo/DIContext.h
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@@ -26,26 +26,49 @@ class raw_ostream;
/// DILineInfo - a format-neutral container for source line information.
class DILineInfo {
const char *FileName;
const char *FunctionName;
uint32_t Line;
uint32_t Column;
public:
DILineInfo() : FileName("<invalid>"), Line(0), Column(0) {}
DILineInfo(const char *fileName, uint32_t line, uint32_t column)
: FileName(fileName), Line(line), Column(column) {}
DILineInfo()
: FileName("<invalid>"), FunctionName("<invalid>"),
Line(0), Column(0) {}
DILineInfo(const char *fileName, const char *functionName,
uint32_t line, uint32_t column)
: FileName(fileName), FunctionName(functionName),
Line(line), Column(column) {}
const char *getFileName() const { return FileName; }
const char *getFunctionName() const { return FunctionName; }
uint32_t getLine() const { return Line; }
uint32_t getColumn() const { return Column; }
bool operator==(const DILineInfo &RHS) const {
return Line == RHS.Line && Column == RHS.Column &&
std::strcmp(FileName, RHS.FileName) == 0;
std::strcmp(FileName, RHS.FileName) == 0 &&
std::strcmp(FunctionName, RHS.FunctionName) == 0;
}
bool operator!=(const DILineInfo &RHS) const {
return !(*this == RHS);
}
};
/// DILineInfoSpecifier - controls which fields of DILineInfo container
/// should be filled with data.
class DILineInfoSpecifier {
const uint32_t Flags; // Or'ed flags that set the info we want to fetch.
public:
enum Specification {
FileLineInfo = 1 << 0,
FunctionName = 1 << 1
};
// Use file/line info by default.
DILineInfoSpecifier(uint32_t flags = FileLineInfo) : Flags(flags) {}
bool needs(Specification spec) const {
return (Flags & spec) > 0;
}
};
class DIContext {
public:
virtual ~DIContext();
@@ -60,7 +83,8 @@ public:
virtual void dump(raw_ostream &OS) = 0;
virtual DILineInfo getLineInfoForAddress(uint64_t address) = 0;
virtual DILineInfo getLineInfoForAddress(uint64_t address,
DILineInfoSpecifier specifier = DILineInfoSpecifier()) = 0;
};
}