[llvm] r305952 - Rename WinCOFFStreamer.cpp -> MCWinCOFFStreamer.cpp
Sam Clegg via llvm-commits
llvm-commits at lists.llvm.org
Wed Jun 21 13:58:17 PDT 2017
Author: sbc
Date: Wed Jun 21 15:58:17 2017
New Revision: 305952
URL: http://llvm.org/viewvc/llvm-project?rev=305952&view=rev
Log:
Rename WinCOFFStreamer.cpp -> MCWinCOFFStreamer.cpp
For consistency with other MC*Streamer.cpp files and
the header file.
Differential Revision: https://reviews.llvm.org/D34466
Added:
llvm/trunk/lib/MC/MCWinCOFFStreamer.cpp (contents, props changed)
- copied, changed from r305863, llvm/trunk/lib/MC/WinCOFFStreamer.cpp
Removed:
llvm/trunk/lib/MC/WinCOFFStreamer.cpp
Modified:
llvm/trunk/lib/MC/CMakeLists.txt
Modified: llvm/trunk/lib/MC/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/MC/CMakeLists.txt?rev=305952&r1=305951&r2=305952&view=diff
==============================================================================
--- llvm/trunk/lib/MC/CMakeLists.txt (original)
+++ llvm/trunk/lib/MC/CMakeLists.txt Wed Jun 21 15:58:17 2017
@@ -45,13 +45,13 @@ add_llvm_library(LLVMMC
MCWasmObjectTargetWriter.cpp
MCWasmStreamer.cpp
MCWin64EH.cpp
+ MCWinCOFFStreamer.cpp
MCWinEH.cpp
MachObjectWriter.cpp
StringTableBuilder.cpp
SubtargetFeature.cpp
WasmObjectWriter.cpp
WinCOFFObjectWriter.cpp
- WinCOFFStreamer.cpp
ADDITIONAL_HEADER_DIRS
${LLVM_MAIN_INCLUDE_DIR}/llvm/MC
Copied: llvm/trunk/lib/MC/MCWinCOFFStreamer.cpp (from r305863, llvm/trunk/lib/MC/WinCOFFStreamer.cpp)
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/MC/MCWinCOFFStreamer.cpp?p2=llvm/trunk/lib/MC/MCWinCOFFStreamer.cpp&p1=llvm/trunk/lib/MC/WinCOFFStreamer.cpp&r1=305863&r2=305952&rev=305952&view=diff
==============================================================================
--- llvm/trunk/lib/MC/WinCOFFStreamer.cpp (original)
+++ llvm/trunk/lib/MC/MCWinCOFFStreamer.cpp Wed Jun 21 15:58:17 2017
@@ -1,4 +1,4 @@
-//===- llvm/MC/WinCOFFStreamer.cpp ----------------------------------------===//
+//===- llvm/MC/MCWinCOFFStreamer.cpp --------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
Propchange: llvm/trunk/lib/MC/MCWinCOFFStreamer.cpp
------------------------------------------------------------------------------
svn:eol-style = LF
Removed: llvm/trunk/lib/MC/WinCOFFStreamer.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/MC/WinCOFFStreamer.cpp?rev=305951&view=auto
==============================================================================
--- llvm/trunk/lib/MC/WinCOFFStreamer.cpp (original)
+++ llvm/trunk/lib/MC/WinCOFFStreamer.cpp (removed)
@@ -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);
-}
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