tools/llvm-readobj/StackMapPrinter.h

   1 //===-------- StackMapPrinter.h - Pretty-print stackmaps --------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #ifndef LLVM_TOOLS_LLVM_READOBJ_STACKMAPPRINTER_H
  11 #define LLVM_TOOLS_LLVM_READOBJ_STACKMAPPRINTER_H
  12
  13 #include "llvm/Object/StackMapParser.h"
  14 #include "llvm/Support/ScopedPrinter.h"
  15
  16 namespace llvm {
  17
  18 // Pretty print a stackmap to the given ostream.
  19 template <typename StackMapParserT>
  20 void prettyPrintStackMap(ScopedPrinter &W, const StackMapParserT &SMP) {
  21
  22   W.printNumber("LLVM StackMap Version",  SMP.getVersion());
  23   W.printNumber("Num Functions", SMP.getNumFunctions());
  24
  25   // Functions:
  26   for (const auto &F : SMP.functions())
  27     W.startLine() << "  Function address: " << F.getFunctionAddress()
  28        << ", stack size: " << F.getStackSize()
  29        << ", callsite record count: " << F.getRecordCount() << "\n";
  30
  31   // Constants:
  32   W.printNumber("Num Constants", SMP.getNumConstants());
  33   unsigned ConstantIndex = 0;
  34   for (const auto &C : SMP.constants())
  35     W.startLine() << "  #" << ++ConstantIndex << ": " << C.getValue() << "\n";
  36
  37   // Records:
  38   W.printNumber("Num Records", SMP.getNumRecords());
  39   for (const auto &R : SMP.records()) {
  40     W.startLine() << "  Record ID: " << R.getID()
  41                   << ", instruction offset: " << R.getInstructionOffset()
  42                   << "\n";
  43     W.startLine() << "    " << R.getNumLocations() << " locations:\n";
  44
  45     unsigned LocationIndex = 0;
  46     for (const auto &Loc : R.locations()) {
  47       raw_ostream &OS = W.startLine();
  48       OS << "      #" << ++LocationIndex << ": ";
  49       switch (Loc.getKind()) {
  50       case StackMapParserT::LocationKind::Register:
  51         OS << "Register R#" << Loc.getDwarfRegNum() << "\n";
  52         break;
  53       case StackMapParserT::LocationKind::Direct:
  54         OS << "Direct R#" << Loc.getDwarfRegNum() << " + " << Loc.getOffset()
  55            << "\n";
  56         break;
  57       case StackMapParserT::LocationKind::Indirect:
  58         OS << "Indirect [R#" << Loc.getDwarfRegNum() << " + " << Loc.getOffset()
  59            << "]\n";
  60         break;
  61       case StackMapParserT::LocationKind::Constant:
  62         OS << "Constant " << Loc.getSmallConstant() << "\n";
  63         break;
  64       case StackMapParserT::LocationKind::ConstantIndex:
  65         OS << "ConstantIndex #" << Loc.getConstantIndex() << " ("
  66            << SMP.getConstant(Loc.getConstantIndex()).getValue() << ")\n";
  67         break;
  68       }
  69     }
  70
  71     raw_ostream &OS = W.startLine();
  72     OS << "    " << R.getNumLiveOuts() << " live-outs: [ ";
  73     for (const auto &LO : R.liveouts())
  74       OS << "R#" << LO.getDwarfRegNum() << " ("
  75          << LO.getSizeInBytes() << "-bytes) ";
  76     OS << "]\n";
  77   }
  78 }
  79
  80 }
  81
  82 #endif