-static debug_line_info LineStartToOProfileFormat(
- const MachineFunction &MF, FilenameCache &Filenames,
- uintptr_t Address, DebugLoc Loc) {
- debug_line_info Result;
- Result.vma = Address;
- Result.lineno = Loc.getLine();
- Result.filename = Filenames.getFilename(
- Loc.getScope(MF.getFunction()->getContext()));
- DEBUG(dbgs() << "Mapping " << reinterpret_cast<void*>(Result.vma) << " to "
- << Result.filename << ":" << Result.lineno << "\n");
- return Result;
-}
-
-// Adds the just-emitted function to the symbol table.
-void OProfileJITEventListener::NotifyFunctionEmitted(
- const Function &F, void *FnStart, size_t FnSize,
- const JITEvent_EmittedFunctionDetails &Details) {
- assert(F.hasName() && FnStart != 0 && "Bad symbol to add");
- if (Wrapper.op_write_native_code(F.getName().data(),
- reinterpret_cast<uint64_t>(FnStart),
- FnStart, FnSize) == -1) {
- DEBUG(dbgs() << "Failed to tell OProfile about native function "
- << F.getName() << " at ["
- << FnStart << "-" << ((char*)FnStart + FnSize) << "]\n");
- return;
- }
-
- if (!Details.LineStarts.empty()) {
- // Now we convert the line number information from the address/DebugLoc
- // format in Details to the address/filename/lineno format that OProfile
- // expects. Note that OProfile 0.9.4 has a bug that causes it to ignore
- // line numbers for addresses above 4G.
- FilenameCache Filenames;
- std::vector<debug_line_info> LineInfo;
- LineInfo.reserve(1 + Details.LineStarts.size());
-
- DebugLoc FirstLoc = Details.LineStarts[0].Loc;
- assert(!FirstLoc.isUnknown()
- && "LineStarts should not contain unknown DebugLocs");
- MDNode *FirstLocScope = FirstLoc.getScope(F.getContext());
- DISubprogram FunctionDI = getDISubprogram(FirstLocScope);
- if (FunctionDI.Verify()) {
- // If we have debug info for the function itself, use that as the line
- // number of the first several instructions. Otherwise, after filling
- // LineInfo, we'll adjust the address of the first line number to point at
- // the start of the function.
- debug_line_info line_info;
- line_info.vma = reinterpret_cast<uintptr_t>(FnStart);
- line_info.lineno = FunctionDI.getLineNumber();
- line_info.filename = Filenames.getFilename(FirstLocScope);
- LineInfo.push_back(line_info);
- }
-
- for (std::vector<EmittedFunctionDetails::LineStart>::const_iterator
- I = Details.LineStarts.begin(), E = Details.LineStarts.end();
- I != E; ++I) {
- LineInfo.push_back(LineStartToOProfileFormat(
- *Details.MF, Filenames, I->Address, I->Loc));
- }
-
- // In case the function didn't have line info of its own, adjust the first
- // line info's address to include the start of the function.
- LineInfo[0].vma = reinterpret_cast<uintptr_t>(FnStart);
-
- if (Wrapper.op_write_debug_line_info(FnStart, LineInfo.size(),
- &*LineInfo.begin()) == -1) {
- DEBUG(dbgs()
- << "Failed to tell OProfile about line numbers for native function "
- << F.getName() << " at ["
- << FnStart << "-" << ((char*)FnStart + FnSize) << "]\n");
- }
- }
-}
-