1 | //===- bolt/RuntimeLibs/InstrumentationRuntimeLibrary.h ---------*- C++ -*-===// |
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 | // This file contains the declaration of the InstrumentationRuntimeLibrary |
10 | // class. |
11 | // |
12 | //===----------------------------------------------------------------------===// |
13 | |
14 | #ifndef BOLT_RUNTIMELIBS_INSTRUMENTATION_RUNTIME_LIBRARY_H |
15 | #define BOLT_RUNTIMELIBS_INSTRUMENTATION_RUNTIME_LIBRARY_H |
16 | |
17 | #include "bolt/Passes/InstrumentationSummary.h" |
18 | #include "bolt/RuntimeLibs/RuntimeLibrary.h" |
19 | #include <memory> |
20 | |
21 | namespace llvm { |
22 | namespace bolt { |
23 | |
24 | class InstrumentationRuntimeLibrary : public RuntimeLibrary { |
25 | public: |
26 | void setSummary(std::unique_ptr<InstrumentationSummary> &&S) { |
27 | Summary.swap(u&: S); |
28 | } |
29 | |
30 | void addRuntimeLibSections(std::vector<std::string> &SecNames) const final { |
31 | SecNames.push_back(x: ".bolt.instr.counters" ); |
32 | } |
33 | |
34 | void adjustCommandLineOptions(const BinaryContext &BC) const final; |
35 | |
36 | void emitBinary(BinaryContext &BC, MCStreamer &Streamer) final; |
37 | |
38 | void link(BinaryContext &BC, StringRef ToolPath, BOLTLinker &Linker, |
39 | BOLTLinker::SectionsMapper MapSections) override; |
40 | |
41 | private: |
42 | std::string buildTables(BinaryContext &BC); |
43 | |
44 | /// Create a non-allocatable ELF section with read-only tables necessary for |
45 | /// writing the instrumented data profile during program finish. The runtime |
46 | /// library needs to open the program executable file and read this data from |
47 | /// disk, this is not loaded by the system. |
48 | void emitTablesAsELFNote(BinaryContext &BC); |
49 | |
50 | std::unique_ptr<InstrumentationSummary> Summary; |
51 | }; |
52 | |
53 | } // namespace bolt |
54 | } // namespace llvm |
55 | |
56 | #endif |
57 | |