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/Path.h"
15#include <sstream>
16
17using namespace llvm;
18using namespace xray;
19
20std::string FuncIdConversionHelper::SymbolOrNumber(int32_t FuncId) const {
21  auto CacheIt = CachedNames.find(FuncId);
22  if (CacheIt != CachedNames.end())
23    return CacheIt->second;
24
25  std::ostringstream F;
26  auto It = FunctionAddresses.find(FuncId);
27  if (It == FunctionAddresses.end()) {
28    F << "#" << FuncId;
29    return F.str();
30  }
31
32  object::SectionedAddress ModuleAddress;
33  ModuleAddress.Address = It->second;
34  // TODO: set proper section index here.
35  // object::SectionedAddress::UndefSection works for only absolute addresses.
36  ModuleAddress.SectionIndex = object::SectionedAddress::UndefSection;
37  if (auto ResOrErr = Symbolizer.symbolizeCode(BinaryInstrMap, ModuleAddress)) {
38    auto &DI = *ResOrErr;
39    if (DI.FunctionName == DILineInfo::BadString)
40      F << "@(" << std::hex << It->second << ")";
41    else
42      F << DI.FunctionName;
43  } else
44    handleAllErrors(ResOrErr.takeError(), [&](const ErrorInfoBase &) {
45      F << "@(" << std::hex << It->second << ")";
46    });
47
48  auto S = F.str();
49  CachedNames[FuncId] = S;
50  return S;
51}
52
53std::string FuncIdConversionHelper::FileLineAndColumn(int32_t FuncId) const {
54  auto It = FunctionAddresses.find(FuncId);
55  if (It == FunctionAddresses.end())
56    return "(unknown)";
57
58  std::ostringstream F;
59  object::SectionedAddress ModuleAddress;
60  ModuleAddress.Address = It->second;
61  // TODO: set proper section index here.
62  // object::SectionedAddress::UndefSection works for only absolute addresses.
63  ModuleAddress.SectionIndex = object::SectionedAddress::UndefSection;
64  auto ResOrErr = Symbolizer.symbolizeCode(BinaryInstrMap, ModuleAddress);
65  if (!ResOrErr) {
66    consumeError(ResOrErr.takeError());
67    return "(unknown)";
68  }
69
70  auto &DI = *ResOrErr;
71  F << sys::path::filename(DI.FileName).str() << ":" << DI.Line << ":"
72    << DI.Column;
73
74  return F.str();
75}
76