Rename WinCOFFStreamer.cpp -> MCWinCOFFStreamer.cpp

For consistency with other MC*Streamer.cpp files and
the header file.

Differential Revision: https://reviews.llvm.org/D34466

llvm-svn: 305952

1 files changed, 0 insertions, 296 deletions

diff --git a/llvm/lib/MC/WinCOFFStreamer.cpp b/llvm/lib/MC/WinCOFFStreamer.cpp
deleted file mode 100644
index b4d0d7a87f1..00000000000
--- a/llvm/lib/MC/WinCOFFStreamer.cpp
+++ /dev/null
@@ -1,296 +0,0 @@
-//===- llvm/MC/WinCOFFStreamer.cpp ----------------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file contains an implementation of a Windows COFF object file streamer.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/ADT/SmallString.h"
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/ADT/Triple.h"
-#include "llvm/ADT/Twine.h"
-#include "llvm/BinaryFormat/COFF.h"
-#include "llvm/MC/MCAsmBackend.h"
-#include "llvm/MC/MCAssembler.h"
-#include "llvm/MC/MCCodeEmitter.h"
-#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCExpr.h"
-#include "llvm/MC/MCFixup.h"
-#include "llvm/MC/MCFragment.h"
-#include "llvm/MC/MCObjectFileInfo.h"
-#include "llvm/MC/MCObjectStreamer.h"
-#include "llvm/MC/MCSection.h"
-#include "llvm/MC/MCSymbolCOFF.h"
-#include "llvm/MC/MCWinCOFFStreamer.h"
-#include "llvm/Support/Casting.h"
-#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/MathExtras.h"
-#include "llvm/Support/SMLoc.h"
-#include "llvm/Support/raw_ostream.h"
-#include <algorithm>
-#include <cassert>
-#include <cstdint>
-
-using namespace llvm;
-
-#define DEBUG_TYPE "WinCOFFStreamer"
-
-MCWinCOFFStreamer::MCWinCOFFStreamer(MCContext &Context, MCAsmBackend &MAB,
-                                     MCCodeEmitter &CE, raw_pwrite_stream &OS)
-    : MCObjectStreamer(Context, MAB, OS, &CE), CurSymbol(nullptr) {}
-
-void MCWinCOFFStreamer::EmitInstToData(const MCInst &Inst,
-                                       const MCSubtargetInfo &STI) {
-  MCDataFragment *DF = getOrCreateDataFragment();
-
-  SmallVector<MCFixup, 4> Fixups;
-  SmallString<256> Code;
-  raw_svector_ostream VecOS(Code);
-  getAssembler().getEmitter().encodeInstruction(Inst, VecOS, Fixups, STI);
-
-  // Add the fixups and data.
-  for (unsigned i = 0, e = Fixups.size(); i != e; ++i) {
-    Fixups[i].setOffset(Fixups[i].getOffset() + DF->getContents().size());
-    DF->getFixups().push_back(Fixups[i]);
-  }
-
-  DF->getContents().append(Code.begin(), Code.end());
-}
-
-void MCWinCOFFStreamer::InitSections(bool NoExecStack) {
-  // FIXME: this is identical to the ELF one.
-  // This emulates the same behavior of GNU as. This makes it easier
-  // to compare the output as the major sections are in the same order.
-  SwitchSection(getContext().getObjectFileInfo()->getTextSection());
-  EmitCodeAlignment(4);
-
-  SwitchSection(getContext().getObjectFileInfo()->getDataSection());
-  EmitCodeAlignment(4);
-
-  SwitchSection(getContext().getObjectFileInfo()->getBSSSection());
-  EmitCodeAlignment(4);
-
-  SwitchSection(getContext().getObjectFileInfo()->getTextSection());
-}
-
-void MCWinCOFFStreamer::EmitLabel(MCSymbol *S, SMLoc Loc) {
-  auto *Symbol = cast<MCSymbolCOFF>(S);
-  MCObjectStreamer::EmitLabel(Symbol, Loc);
-}
-
-void MCWinCOFFStreamer::EmitAssemblerFlag(MCAssemblerFlag Flag) {
-  llvm_unreachable("not implemented");
-}
-
-void MCWinCOFFStreamer::EmitThumbFunc(MCSymbol *Func) {
-  llvm_unreachable("not implemented");
-}
-
-bool MCWinCOFFStreamer::EmitSymbolAttribute(MCSymbol *S,
-                                            MCSymbolAttr Attribute) {
-  auto *Symbol = cast<MCSymbolCOFF>(S);
-  getAssembler().registerSymbol(*Symbol);
-
-  switch (Attribute) {
-  default: return false;
-  case MCSA_WeakReference:
-  case MCSA_Weak:
-    Symbol->setIsWeakExternal();
-    Symbol->setExternal(true);
-    break;
-  case MCSA_Global:
-    Symbol->setExternal(true);
-    break;
-  case MCSA_AltEntry:
-    llvm_unreachable("COFF doesn't support the .alt_entry attribute");
-  }
-
-  return true;
-}
-
-void MCWinCOFFStreamer::EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) {
-  llvm_unreachable("not implemented");
-}
-
-void MCWinCOFFStreamer::BeginCOFFSymbolDef(MCSymbol const *S) {
-  auto *Symbol = cast<MCSymbolCOFF>(S);
-  if (CurSymbol)
-    Error("starting a new symbol definition without completing the "
-          "previous one");
-  CurSymbol = Symbol;
-}
-
-void MCWinCOFFStreamer::EmitCOFFSymbolStorageClass(int StorageClass) {
-  if (!CurSymbol) {
-    Error("storage class specified outside of symbol definition");
-    return;
-  }
-
-  if (StorageClass & ~COFF::SSC_Invalid) {
-    Error("storage class value '" + Twine(StorageClass) +
-               "' out of range");
-    return;
-  }
-
-  getAssembler().registerSymbol(*CurSymbol);
-  cast<MCSymbolCOFF>(CurSymbol)->setClass((uint16_t)StorageClass);
-}
-
-void MCWinCOFFStreamer::EmitCOFFSymbolType(int Type) {
-  if (!CurSymbol) {
-    Error("symbol type specified outside of a symbol definition");
-    return;
-  }
-
-  if (Type & ~0xffff) {
-    Error("type value '" + Twine(Type) + "' out of range");
-    return;
-  }
-
-  getAssembler().registerSymbol(*CurSymbol);
-  cast<MCSymbolCOFF>(CurSymbol)->setType((uint16_t)Type);
-}
-
-void MCWinCOFFStreamer::EndCOFFSymbolDef() {
-  if (!CurSymbol)
-    Error("ending symbol definition without starting one");
-  CurSymbol = nullptr;
-}
-
-void MCWinCOFFStreamer::EmitCOFFSafeSEH(MCSymbol const *Symbol) {
-  // SafeSEH is a feature specific to 32-bit x86.  It does not exist (and is
-  // unnecessary) on all platforms which use table-based exception dispatch.
-  if (getContext().getObjectFileInfo()->getTargetTriple().getArch() !=
-      Triple::x86)
-    return;
-
-  const MCSymbolCOFF *CSymbol = cast<MCSymbolCOFF>(Symbol);
-  if (CSymbol->isSafeSEH())
-    return;
-
-  MCSection *SXData = getContext().getObjectFileInfo()->getSXDataSection();
-  getAssembler().registerSection(*SXData);
-  if (SXData->getAlignment() < 4)
-    SXData->setAlignment(4);
-
-  new MCSafeSEHFragment(Symbol, SXData);
-
-  getAssembler().registerSymbol(*Symbol);
-  CSymbol->setIsSafeSEH();
-
-  // The Microsoft linker requires that the symbol type of a handler be
-  // function. Go ahead and oblige it here.
-  CSymbol->setType(COFF::IMAGE_SYM_DTYPE_FUNCTION
-                   << COFF::SCT_COMPLEX_TYPE_SHIFT);
-}
-
-void MCWinCOFFStreamer::EmitCOFFSectionIndex(MCSymbol const *Symbol) {
-  MCDataFragment *DF = getOrCreateDataFragment();
-  const MCSymbolRefExpr *SRE = MCSymbolRefExpr::create(Symbol, getContext());
-  MCFixup Fixup = MCFixup::create(DF->getContents().size(), SRE, FK_SecRel_2);
-  DF->getFixups().push_back(Fixup);
-  DF->getContents().resize(DF->getContents().size() + 2, 0);
-}
-
-void MCWinCOFFStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol,
-                                         uint64_t Offset) {
-  MCDataFragment *DF = getOrCreateDataFragment();
-  // Create Symbol A for the relocation relative reference.
-  const MCExpr *MCE = MCSymbolRefExpr::create(Symbol, getContext());
-  // Add the constant offset, if given.
-  if (Offset)
-    MCE = MCBinaryExpr::createAdd(
-        MCE, MCConstantExpr::create(Offset, getContext()), getContext());
-  // Build the secrel32 relocation.
-  MCFixup Fixup = MCFixup::create(DF->getContents().size(), MCE, FK_SecRel_4);
-  // Record the relocation.
-  DF->getFixups().push_back(Fixup);
-  // Emit 4 bytes (zeros) to the object file.
-  DF->getContents().resize(DF->getContents().size() + 4, 0);
-}
-
-void MCWinCOFFStreamer::EmitCommonSymbol(MCSymbol *S, uint64_t Size,
-                                         unsigned ByteAlignment) {
-  auto *Symbol = cast<MCSymbolCOFF>(S);
-
-  const Triple &T = getContext().getObjectFileInfo()->getTargetTriple();
-  if (T.isKnownWindowsMSVCEnvironment()) {
-    if (ByteAlignment > 32)
-      report_fatal_error("alignment is limited to 32-bytes");
-
-    // Round size up to alignment so that we will honor the alignment request.
-    Size = std::max(Size, static_cast<uint64_t>(ByteAlignment));
-  }
-
-  getAssembler().registerSymbol(*Symbol);
-  Symbol->setExternal(true);
-  Symbol->setCommon(Size, ByteAlignment);
-
-  if (!T.isKnownWindowsMSVCEnvironment() && ByteAlignment > 1) {
-    SmallString<128> Directive;
-    raw_svector_ostream OS(Directive);
-    const MCObjectFileInfo *MFI = getContext().getObjectFileInfo();
-
-    OS << " -aligncomm:\"" << Symbol->getName() << "\","
-       << Log2_32_Ceil(ByteAlignment);
-
-    PushSection();
-    SwitchSection(MFI->getDrectveSection());
-    EmitBytes(Directive);
-    PopSection();
-  }
-}
-
-void MCWinCOFFStreamer::EmitLocalCommonSymbol(MCSymbol *S, uint64_t Size,
-                                              unsigned ByteAlignment) {
-  auto *Symbol = cast<MCSymbolCOFF>(S);
-
-  MCSection *Section = getContext().getObjectFileInfo()->getBSSSection();
-  getAssembler().registerSection(*Section);
-  if (Section->getAlignment() < ByteAlignment)
-    Section->setAlignment(ByteAlignment);
-
-  getAssembler().registerSymbol(*Symbol);
-  Symbol->setExternal(false);
-
-  if (ByteAlignment != 1)
-    new MCAlignFragment(ByteAlignment, /*Value=*/0, /*ValueSize=*/0,
-                        ByteAlignment, Section);
-
-  MCFillFragment *Fragment = new MCFillFragment(
-      /*Value=*/0, Size, Section);
-  Symbol->setFragment(Fragment);
-}
-
-void MCWinCOFFStreamer::EmitZerofill(MCSection *Section, MCSymbol *Symbol,
-                                     uint64_t Size, unsigned ByteAlignment) {
-  llvm_unreachable("not implemented");
-}
-
-void MCWinCOFFStreamer::EmitTBSSSymbol(MCSection *Section, MCSymbol *Symbol,
-                                       uint64_t Size, unsigned ByteAlignment) {
-  llvm_unreachable("not implemented");
-}
-
-// TODO: Implement this if you want to emit .comment section in COFF obj files.
-void MCWinCOFFStreamer::EmitIdent(StringRef IdentString) {
-  llvm_unreachable("not implemented");
-}
-
-void MCWinCOFFStreamer::EmitWinEHHandlerData() {
-  llvm_unreachable("not implemented");
-}
-
-void MCWinCOFFStreamer::FinishImpl() {
-  MCObjectStreamer::FinishImpl();
-}
-
-void MCWinCOFFStreamer::Error(const Twine &Msg) const {
-  getContext().reportError(SMLoc(), Msg);
-}