llvm-6502/tools/llvm-readobj/StackMapPrinter.h
Lang Hames 63f4054f8e [StackMaps] Add a lightweight parser for stackmap version 1 sections.
The parser provides a convenient interface for reading llvm stackmap v1 sections
in object files.

This patch also includes a new option for llvm-readobj, '-stackmap', which uses
the parser to pretty-print stackmap sections for debugging/testing purposes.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240860 91177308-0d34-0410-b5e6-96231b3b80d8
2015-06-26 23:56:53 +00:00

81 lines
2.6 KiB
C++

//===-------- StackMapPrinter.h - Pretty-print stackmaps --------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TOOLS_LLVM_READOBJ_STACKMAPPRINTER_H
#define LLVM_TOOLS_LLVM_READOBJ_STACKMAPPRINTER_H
#include "llvm/Object/StackMapParser.h"
namespace llvm {
// Pretty print a stackmap to the given ostream.
template <typename OStreamT, typename StackMapParserT>
void prettyPrintStackMap(OStreamT &OS, const StackMapParserT &SMP) {
OS << "LLVM StackMap Version: " << SMP.getVersion()
<< "\nNum Functions: " << SMP.getNumFunctions();
// Functions:
for (const auto &F : SMP.functions())
OS << "\n Function address: " << F.getFunctionAddress()
<< ", stack size: " << F.getStackSize();
// Constants:
OS << "\nNum Constants: " << SMP.getNumConstants();
unsigned ConstantIndex = 0;
for (const auto &C : SMP.constants())
OS << "\n #" << ++ConstantIndex << ": " << C.getValue();
// Records:
OS << "\nNum Records: " << SMP.getNumRecords();
for (const auto &R : SMP.records()) {
OS << "\n Record ID: " << R.getID()
<< ", instruction offset: " << R.getInstructionOffset()
<< "\n " << R.getNumLocations() << " locations:";
unsigned LocationIndex = 0;
for (const auto &Loc : R.locations()) {
OS << "\n #" << ++LocationIndex << ": ";
switch (Loc.getKind()) {
case StackMapParserT::LocationKind::Register:
OS << "Register R#" << Loc.getDwarfRegNum();
break;
case StackMapParserT::LocationKind::Direct:
OS << "Direct R#" << Loc.getDwarfRegNum() << " + "
<< Loc.getOffset();
break;
case StackMapParserT::LocationKind::Indirect:
OS << "Indirect [R#" << Loc.getDwarfRegNum() << " + "
<< Loc.getOffset() << "]";
break;
case StackMapParserT::LocationKind::Constant:
OS << "Constant " << Loc.getSmallConstant();
break;
case StackMapParserT::LocationKind::ConstantIndex:
OS << "ConstantIndex #" << Loc.getConstantIndex() << " ("
<< SMP.getConstant(Loc.getConstantIndex()).getValue() << ")";
break;
}
}
OS << "\n " << R.getNumLiveOuts() << " live-outs: [ ";
for (const auto &LO : R.liveouts())
OS << "R#" << LO.getDwarfRegNum() << " ("
<< LO.getSizeInBytes() << "-bytes) ";
OS << "]\n";
}
OS << "\n";
}
}
#endif