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usr / src / contrib / llvm-project / llvm / lib / CodeGen / AsmPrinter /

📁 ..
📄 ARMException.cpp(4.45 KB)
📄 AccelTable.cpp(24.07 KB)
📄 AddressPool.cpp(2.61 KB)
📄 AddressPool.h(1.93 KB)
📄 AsmPrinter.cpp(123.3 KB)
📄 AsmPrinterDwarf.cpp(9.88 KB)
📄 AsmPrinterInlineAsm.cpp(25.75 KB)
📄 ByteStreamer.h(3.93 KB)
📄 CodeViewDebug.cpp(115.03 KB)
📄 CodeViewDebug.h(17.9 KB)
📄 DIE.cpp(25.69 KB)
📄 DIEHash.cpp(14.17 KB)
📄 DIEHash.h(3.37 KB)
📄 DIEHashAttributes.def(2.02 KB)
📄 DbgEntityHistoryCalculator.cpp(14.88 KB)
📄 DebugHandlerBase.cpp(10.8 KB)
📄 DebugLocEntry.h(6.96 KB)
📄 DebugLocStream.cpp(1.36 KB)
📄 DebugLocStream.h(5.78 KB)
📄 DwarfCFIException.cpp(6.1 KB)
📄 DwarfCompileUnit.cpp(55.27 KB)
📄 DwarfCompileUnit.h(13.61 KB)
📄 DwarfDebug.cpp(128.56 KB)
📄 DwarfDebug.h(27.39 KB)
📄 DwarfException.h(3.23 KB)
📄 DwarfExpression.cpp(21.36 KB)
📄 DwarfExpression.h(15.03 KB)
📄 DwarfFile.cpp(4.31 KB)
📄 DwarfFile.h(5.86 KB)
📄 DwarfStringPool.cpp(4.72 KB)
📄 DwarfStringPool.h(2.07 KB)
📄 DwarfUnit.cpp(64.61 KB)
📄 DwarfUnit.h(14.34 KB)
📄 EHStreamer.cpp(25.33 KB)
📄 EHStreamer.h(5.66 KB)
📄 ErlangGCPrinter.cpp(4.16 KB)
📄 OcamlGCPrinter.cpp(6.38 KB)
📄 WasmException.cpp(4.09 KB)
📄 WasmException.h(1.32 KB)
📄 WinCFGuard.cpp(3.62 KB)
📄 WinCFGuard.h(1.77 KB)
📄 WinException.cpp(50.88 KB)
📄 WinException.h(4.1 KB)

Editing: AddressPool.cpp

//===- llvm/CodeGen/AddressPool.cpp - Dwarf Debug Framework ---------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#include "AddressPool.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
#include <utility>

using namespace llvm;

unsigned AddressPool::getIndex(const MCSymbol *Sym, bool TLS) {
  HasBeenUsed = true;
  auto IterBool =
      Pool.insert(std::make_pair(Sym, AddressPoolEntry(Pool.size(), TLS)));
  return IterBool.first->second.Number;
}

MCSymbol *AddressPool::emitHeader(AsmPrinter &Asm, MCSection *Section) {
  static const uint8_t AddrSize = Asm.getDataLayout().getPointerSize();
  StringRef Prefix = "debug_addr_";
  MCSymbol *BeginLabel = Asm.createTempSymbol(Prefix + "start");
  MCSymbol *EndLabel = Asm.createTempSymbol(Prefix + "end");

Asm.OutStreamer->AddComment("Length of contribution");
  Asm.emitLabelDifference(EndLabel, BeginLabel,
                          4); // TODO: Support DWARF64 format.
  Asm.OutStreamer->emitLabel(BeginLabel);
  Asm.OutStreamer->AddComment("DWARF version number");
  Asm.emitInt16(Asm.getDwarfVersion());
  Asm.OutStreamer->AddComment("Address size");
  Asm.emitInt8(AddrSize);
  Asm.OutStreamer->AddComment("Segment selector size");
  Asm.emitInt8(0); // TODO: Support non-zero segment_selector_size.

return EndLabel;
}

// Emit addresses into the section given.
void AddressPool::emit(AsmPrinter &Asm, MCSection *AddrSection) {
  if (isEmpty())
    return;

// Start the dwarf addr section.
  Asm.OutStreamer->SwitchSection(AddrSection);

MCSymbol *EndLabel = nullptr;

if (Asm.getDwarfVersion() >= 5)
    EndLabel = emitHeader(Asm, AddrSection);

// Define the symbol that marks the start of the contribution.
  // It is referenced via DW_AT_addr_base.
  Asm.OutStreamer->emitLabel(AddressTableBaseSym);

// Order the address pool entries by ID
  SmallVector<const MCExpr *, 64> Entries(Pool.size());

for (const auto &I : Pool)
    Entries[I.second.Number] =
        I.second.TLS
            ? Asm.getObjFileLowering().getDebugThreadLocalSymbol(I.first)
            : MCSymbolRefExpr::create(I.first, Asm.OutContext);

for (const MCExpr *Entry : Entries)
    Asm.OutStreamer->emitValue(Entry, Asm.getDataLayout().getPointerSize());

if (EndLabel)
    Asm.OutStreamer->emitLabel(EndLabel);
}

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Editing: AddressPool.cpp

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