| 1 | //===- xray-fc-account.cpp: XRay Function Call Accounting Tool ------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | // |
| 9 | // Implementation of the helper tools dealing with XRay-generated function ids. |
| 10 | // |
| 11 | //===----------------------------------------------------------------------===// |
| 12 | |
| 13 | #include "func-id-helper.h" |
| 14 | #include "llvm/Support/MemoryBuffer.h" |
| 15 | #include "llvm/Support/Path.h" |
| 16 | #include <sstream> |
| 17 | |
| 18 | using namespace llvm; |
| 19 | using namespace xray; |
| 20 | |
| 21 | std::string FuncIdConversionHelper::SymbolOrNumber(int32_t FuncId) const { |
| 22 | auto CacheIt = CachedNames.find(Val: FuncId); |
| 23 | if (CacheIt != CachedNames.end()) |
| 24 | return CacheIt->second; |
| 25 | |
| 26 | std::ostringstream F; |
| 27 | auto It = FunctionAddresses.find(x: FuncId); |
| 28 | if (It == FunctionAddresses.end()) { |
| 29 | F << "#"<< FuncId; |
| 30 | return F.str(); |
| 31 | } |
| 32 | |
| 33 | object::SectionedAddress ModuleAddress; |
| 34 | ModuleAddress.Address = It->second; |
| 35 | // TODO: set proper section index here. |
| 36 | // object::SectionedAddress::UndefSection works for only absolute addresses. |
| 37 | ModuleAddress.SectionIndex = object::SectionedAddress::UndefSection; |
| 38 | if (auto ResOrErr = Symbolizer.symbolizeCode(ModuleName: BinaryInstrMap, ModuleOffset: ModuleAddress)) { |
| 39 | auto &DI = *ResOrErr; |
| 40 | if (DI.FunctionName == DILineInfo::BadString) |
| 41 | F << "@("<< std::hex << It->second << ")"; |
| 42 | else |
| 43 | F << DI.FunctionName; |
| 44 | } else |
| 45 | handleAllErrors(E: ResOrErr.takeError(), Handlers: [&](const ErrorInfoBase &) { |
| 46 | F << "@("<< std::hex << It->second << ")"; |
| 47 | }); |
| 48 | |
| 49 | auto S = F.str(); |
| 50 | CachedNames[FuncId] = S; |
| 51 | return S; |
| 52 | } |
| 53 | |
| 54 | std::string FuncIdConversionHelper::FileLineAndColumn(int32_t FuncId) const { |
| 55 | auto It = FunctionAddresses.find(x: FuncId); |
| 56 | if (It == FunctionAddresses.end()) |
| 57 | return "(unknown)"; |
| 58 | |
| 59 | std::ostringstream F; |
| 60 | object::SectionedAddress ModuleAddress; |
| 61 | ModuleAddress.Address = It->second; |
| 62 | // TODO: set proper section index here. |
| 63 | // object::SectionedAddress::UndefSection works for only absolute addresses. |
| 64 | ModuleAddress.SectionIndex = object::SectionedAddress::UndefSection; |
| 65 | auto ResOrErr = Symbolizer.symbolizeCode(ModuleName: BinaryInstrMap, ModuleOffset: ModuleAddress); |
| 66 | if (!ResOrErr) { |
| 67 | consumeError(Err: ResOrErr.takeError()); |
| 68 | return "(unknown)"; |
| 69 | } |
| 70 | |
| 71 | auto &DI = *ResOrErr; |
| 72 | F << sys::path::filename(path: DI.FileName).str() << ":"<< DI.Line << ":" |
| 73 | << DI.Column; |
| 74 | |
| 75 | return F.str(); |
| 76 | } |
| 77 |