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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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13
tools/llvm-dwarfdump/llvm-dwarfdump.cpp
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@ -39,6 +39,11 @@ static cl::opt<unsigned long long>
Address("address", cl::init(-1ULL),
cl::desc("Print line information for a given address"));
static cl::opt<bool>
PrintFunctions("functions", cl::init(false),
cl::desc("Print function names as well as line information "
"for a given address"));
static void DumpInput(const StringRef &Filename) {
OwningPtr<MemoryBuffer> Buff;
@ -92,7 +97,13 @@ static void DumpInput(const StringRef &Filename) {
dictx->dump(outs());
} else {
// Print line info for the specified address.
DILineInfo dli = dictx->getLineInfoForAddress(Address);
int spec_flags = DILineInfoSpecifier::FileLineInfo;
if (PrintFunctions)
spec_flags |= DILineInfoSpecifier::FunctionName;
DILineInfo dli = dictx->getLineInfoForAddress(Address, spec_flags);
if (PrintFunctions)
outs() << (dli.getFunctionName() ? dli.getFunctionName() : "<unknown>")
<< "\n";
outs() << (dli.getFileName() ? dli.getFileName() : "<unknown>") << ':'
<< dli.getLine() << ':' << dli.getColumn() << '\n';
}