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Usage: llvm-xray extract <object file> [-o <filename or '-'>] The tool gets the XRay instrumentation map from an object file and turns it into YAML. We first support ELF64 sleds on x86_64 binaries, with provision for supporting other supported platforms and formats later. This is the first of a many-part change to fully implement the `llvm-xray` tool. We also define a subcommand registration and dispatch mechanism to be used by other further subcommand implementations for llvm-xray. Diffusion Revision: https://reviews.llvm.org/D21987 llvm-svn: 285165
59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
//===- xray-extract.h - XRay Instrumentation Map Extraction ---------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Defines the interface for extracting the instrumentation map from an
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// XRay-instrumented binary.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TOOLS_XRAY_EXTRACT_H
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#define LLVM_TOOLS_XRAY_EXTRACT_H
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#include <deque>
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#include <map>
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#include <string>
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#include <unordered_map>
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#include "xray-sleds.h"
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#include "llvm/Support/Error.h"
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#include "llvm/Support/raw_ostream.h"
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namespace llvm {
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namespace xray {
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class InstrumentationMapExtractor {
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public:
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typedef std::unordered_map<int32_t, uint64_t> FunctionAddressMap;
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typedef std::unordered_map<uint64_t, int32_t> FunctionAddressReverseMap;
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enum class InputFormats { ELF, YAML };
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private:
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std::deque<SledEntry> Sleds;
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FunctionAddressMap FunctionAddresses;
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FunctionAddressReverseMap FunctionIds;
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public:
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/// Loads the instrumentation map from |Filename|. Updates |EC| in case there
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/// were errors encountered opening the file. |Format| defines what the input
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/// instrumentation map is in.
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InstrumentationMapExtractor(std::string Filename, InputFormats Format,
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Error &EC);
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const FunctionAddressMap &getFunctionAddresses() { return FunctionAddresses; }
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/// Exports the loaded function address map as YAML through |OS|.
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void exportAsYAML(raw_ostream &OS);
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};
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} // namespace xray
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} // namespace llvm
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#endif // LLVM_TOOLS_XRAY_EXTRACT_H
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