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https://github.com/c64scene-ar/llvm-6502.git
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MC: rename WinCOFFStreamer and move declaration out-of-line
This is in preparation for promoting WinCOFFStreamer to a base class which will be shared by the X86 and ARM specific target COFF streamers. Also add a new getOrCreateSymbolData interface (like MCELFStreamer) for the ARM COFF Streamer. This makes the COFFStreamer more similar to the ELFStreamer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207343 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Saleem Abdulrasool
parent
31c99ddfbd
commit
d54ec77c0d
74
include/llvm/MC/MCWinCOFFStreamer.h
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74
include/llvm/MC/MCWinCOFFStreamer.h
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@ -0,0 +1,74 @@
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//===- MCWinCOFFStreamer.h - COFF Object File Interface ---------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_MC_MCWINCOFFSTREAMER_H
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#define LLVM_MC_MCWINCOFFSTREAMER_H
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#include "llvm/MC/MCDirectives.h"
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#include "llvm/MC/MCObjectStreamer.h"
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namespace llvm {
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class MCAsmBackend;
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class MCContext;
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class MCCodeEmitter;
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class MCExpr;
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class MCInst;
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class MCSection;
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class MCSubtargetInfo;
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class MCSymbol;
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class StringRef;
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class raw_ostream;
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class MCWinCOFFStreamer : public MCObjectStreamer {
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public:
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MCWinCOFFStreamer(MCContext &Context, MCAsmBackend &MAB, MCCodeEmitter &CE,
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raw_ostream &OS);
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/// \name MCStreamer interface
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/// \{
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void InitSections() override;
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void EmitLabel(MCSymbol *Symbol) override;
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void EmitDebugLabel(MCSymbol *Symbol) override;
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void EmitAssemblerFlag(MCAssemblerFlag Flag) override;
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void EmitThumbFunc(MCSymbol *Func) override;
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bool EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute) override;
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void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) override;
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void BeginCOFFSymbolDef(MCSymbol const *Symbol) override;
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void EmitCOFFSymbolStorageClass(int StorageClass) override;
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void EmitCOFFSymbolType(int Type) override;
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void EndCOFFSymbolDef() override;
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void EmitCOFFSectionIndex(MCSymbol const *Symbol) override;
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void EmitCOFFSecRel32(MCSymbol const *Symbol) override;
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void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) override;
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void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) override;
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void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) override;
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void EmitZerofill(const MCSection *Section, MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) override;
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void EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) override;
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void EmitFileDirective(StringRef Filename) override;
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void EmitIdent(StringRef IdentString) override;
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void EmitWin64EHHandlerData() override;
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void FinishImpl() override;
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/// \}
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MCSymbolData &getOrCreateSymbolData(const MCSymbol *Symbol);
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protected:
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const MCSymbol *CurSymbol;
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void EmitInstToData(const MCInst &Inst, const MCSubtargetInfo &STI) override;
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};
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}
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#endif
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@ -7,7 +7,7 @@
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains an implementation of a Win32 COFF object file streamer.
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// This file contains an implementation of a Windows COFF object file streamer.
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//
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//===----------------------------------------------------------------------===//
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@ -25,6 +25,7 @@
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#include "llvm/MC/MCSymbol.h"
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#include "llvm/MC/MCValue.h"
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#include "llvm/MC/MCWin64EH.h"
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#include "llvm/MC/MCWinCOFFStreamer.h"
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#include "llvm/Support/COFF.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/ErrorHandling.h"
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@ -35,70 +36,31 @@ using namespace llvm;
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#define DEBUG_TYPE "WinCOFFStreamer"
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namespace {
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class WinCOFFStreamer : public MCObjectStreamer {
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public:
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MCSymbol const *CurSymbol;
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WinCOFFStreamer(MCContext &Context, MCAsmBackend &MAB, MCCodeEmitter &CE,
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raw_ostream &OS);
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// MCStreamer interface
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void InitSections() override;
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void EmitLabel(MCSymbol *Symbol) override;
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void EmitDebugLabel(MCSymbol *Symbol) override;
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void EmitAssemblerFlag(MCAssemblerFlag Flag) override;
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void EmitThumbFunc(MCSymbol *Func) override;
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bool EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute) override;
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void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) override;
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void BeginCOFFSymbolDef(MCSymbol const *Symbol) override;
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void EmitCOFFSymbolStorageClass(int StorageClass) override;
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void EmitCOFFSymbolType(int Type) override;
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void EndCOFFSymbolDef() override;
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void EmitCOFFSectionIndex(MCSymbol const *Symbol) override;
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void EmitCOFFSecRel32(MCSymbol const *Symbol) override;
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void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) override;
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void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) override;
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void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) override;
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void EmitZerofill(const MCSection *Section, MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) override;
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void EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) override;
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void EmitFileDirective(StringRef Filename) override;
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void EmitIdent(StringRef IdentString) override;
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void EmitWin64EHHandlerData() override;
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void FinishImpl() override;
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private:
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void EmitInstToData(const MCInst &Inst, const MCSubtargetInfo &STI) override {
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MCDataFragment *DF = getOrCreateDataFragment();
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SmallVector<MCFixup, 4> Fixups;
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SmallString<256> Code;
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raw_svector_ostream VecOS(Code);
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getAssembler().getEmitter().EncodeInstruction(Inst, VecOS, Fixups, STI);
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VecOS.flush();
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// Add the fixups and data.
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for (unsigned i = 0, e = Fixups.size(); i != e; ++i) {
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Fixups[i].setOffset(Fixups[i].getOffset() + DF->getContents().size());
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DF->getFixups().push_back(Fixups[i]);
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}
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DF->getContents().append(Code.begin(), Code.end());
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}
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};
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} // end anonymous namespace.
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WinCOFFStreamer::WinCOFFStreamer(MCContext &Context, MCAsmBackend &MAB,
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MCCodeEmitter &CE, raw_ostream &OS)
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namespace llvm {
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MCWinCOFFStreamer::MCWinCOFFStreamer(MCContext &Context, MCAsmBackend &MAB,
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MCCodeEmitter &CE, raw_ostream &OS)
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: MCObjectStreamer(Context, MAB, OS, &CE), CurSymbol(nullptr) {}
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// MCStreamer interface
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void MCWinCOFFStreamer::EmitInstToData(const MCInst &Inst,
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const MCSubtargetInfo &STI) {
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MCDataFragment *DF = getOrCreateDataFragment();
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void WinCOFFStreamer::InitSections() {
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SmallVector<MCFixup, 4> Fixups;
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SmallString<256> Code;
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raw_svector_ostream VecOS(Code);
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getAssembler().getEmitter().EncodeInstruction(Inst, VecOS, Fixups, STI);
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VecOS.flush();
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// Add the fixups and data.
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for (unsigned i = 0, e = Fixups.size(); i != e; ++i) {
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Fixups[i].setOffset(Fixups[i].getOffset() + DF->getContents().size());
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DF->getFixups().push_back(Fixups[i]);
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}
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DF->getContents().append(Code.begin(), Code.end());
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}
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void MCWinCOFFStreamer::InitSections() {
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// FIXME: this is identical to the ELF one.
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// This emulates the same behavior of GNU as. This makes it easier
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// to compare the output as the major sections are in the same order.
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@ -114,25 +76,25 @@ void WinCOFFStreamer::InitSections() {
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SwitchSection(getContext().getObjectFileInfo()->getTextSection());
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}
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void WinCOFFStreamer::EmitLabel(MCSymbol *Symbol) {
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void MCWinCOFFStreamer::EmitLabel(MCSymbol *Symbol) {
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assert(Symbol->isUndefined() && "Cannot define a symbol twice!");
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MCObjectStreamer::EmitLabel(Symbol);
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}
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void WinCOFFStreamer::EmitDebugLabel(MCSymbol *Symbol) {
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void MCWinCOFFStreamer::EmitDebugLabel(MCSymbol *Symbol) {
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EmitLabel(Symbol);
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}
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void WinCOFFStreamer::EmitAssemblerFlag(MCAssemblerFlag Flag) {
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void MCWinCOFFStreamer::EmitAssemblerFlag(MCAssemblerFlag Flag) {
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llvm_unreachable("not implemented");
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}
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void WinCOFFStreamer::EmitThumbFunc(MCSymbol *Func) {
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void MCWinCOFFStreamer::EmitThumbFunc(MCSymbol *Func) {
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llvm_unreachable("not implemented");
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}
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bool WinCOFFStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
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MCSymbolAttr Attribute) {
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bool MCWinCOFFStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
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MCSymbolAttr Attribute) {
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assert(Symbol && "Symbol must be non-null!");
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assert((!Symbol->isInSection() ||
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Symbol->getSection().getVariant() == MCSection::SV_COFF) &&
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@ -155,11 +117,11 @@ bool WinCOFFStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
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return true;
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}
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void WinCOFFStreamer::EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) {
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void MCWinCOFFStreamer::EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) {
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llvm_unreachable("not implemented");
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}
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void WinCOFFStreamer::BeginCOFFSymbolDef(MCSymbol const *Symbol) {
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void MCWinCOFFStreamer::BeginCOFFSymbolDef(MCSymbol const *Symbol) {
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assert((!Symbol->isInSection() ||
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Symbol->getSection().getVariant() == MCSection::SV_COFF) &&
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"Got non-COFF section in the COFF backend!");
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@ -167,7 +129,7 @@ void WinCOFFStreamer::BeginCOFFSymbolDef(MCSymbol const *Symbol) {
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CurSymbol = Symbol;
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}
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void WinCOFFStreamer::EmitCOFFSymbolStorageClass(int StorageClass) {
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void MCWinCOFFStreamer::EmitCOFFSymbolStorageClass(int StorageClass) {
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assert(CurSymbol && "StorageClass specified outside of symbol definition");
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assert((StorageClass & ~0xFF) == 0 &&
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"StorageClass must only have data in the first byte!");
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@ -176,7 +138,7 @@ void WinCOFFStreamer::EmitCOFFSymbolStorageClass(int StorageClass) {
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SD.modifyFlags(StorageClass << COFF::SF_ClassShift, COFF::SF_ClassMask);
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}
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void WinCOFFStreamer::EmitCOFFSymbolType(int Type) {
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void MCWinCOFFStreamer::EmitCOFFSymbolType(int Type) {
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assert(CurSymbol && "SymbolType specified outside of a symbol definition");
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assert((Type & ~0xFFFF) == 0 &&
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"Type must only have data in the first 2 bytes");
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@ -185,12 +147,12 @@ void WinCOFFStreamer::EmitCOFFSymbolType(int Type) {
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SD.modifyFlags(Type << COFF::SF_TypeShift, COFF::SF_TypeMask);
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}
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void WinCOFFStreamer::EndCOFFSymbolDef() {
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void MCWinCOFFStreamer::EndCOFFSymbolDef() {
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assert(CurSymbol && "ending symbol definition without beginning one");
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CurSymbol = nullptr;
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}
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void WinCOFFStreamer::EmitCOFFSectionIndex(MCSymbol const *Symbol) {
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void MCWinCOFFStreamer::EmitCOFFSectionIndex(MCSymbol const *Symbol) {
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MCDataFragment *DF = getOrCreateDataFragment();
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const MCSymbolRefExpr *SRE = MCSymbolRefExpr::Create(Symbol, getContext());
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MCFixup Fixup = MCFixup::Create(DF->getContents().size(), SRE, FK_SecRel_2);
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@ -198,7 +160,7 @@ void WinCOFFStreamer::EmitCOFFSectionIndex(MCSymbol const *Symbol) {
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DF->getContents().resize(DF->getContents().size() + 4, 0);
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}
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void WinCOFFStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
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void MCWinCOFFStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
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MCDataFragment *DF = getOrCreateDataFragment();
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const MCSymbolRefExpr *SRE = MCSymbolRefExpr::Create(Symbol, getContext());
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MCFixup Fixup = MCFixup::Create(DF->getContents().size(), SRE, FK_SecRel_4);
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@ -206,12 +168,12 @@ void WinCOFFStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
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DF->getContents().resize(DF->getContents().size() + 4, 0);
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}
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void WinCOFFStreamer::EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) {
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void MCWinCOFFStreamer::EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) {
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llvm_unreachable("not supported");
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}
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void WinCOFFStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) {
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void MCWinCOFFStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) {
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assert((!Symbol->isInSection() ||
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Symbol->getSection().getVariant() == MCSection::SV_COFF) &&
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"Got non-COFF section in the COFF backend!");
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@ -226,8 +188,8 @@ void WinCOFFStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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SD.setCommon(Size, ByteAlignment);
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}
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void WinCOFFStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) {
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void MCWinCOFFStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) {
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assert(!Symbol->isInSection() && "Symbol must not already have a section!");
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const MCSection *Section = getContext().getObjectFileInfo()->getBSSSection();
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@ -249,26 +211,28 @@ void WinCOFFStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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SD.setFragment(Fragment);
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}
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void WinCOFFStreamer::EmitZerofill(const MCSection *Section, MCSymbol *Symbol,
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uint64_t Size, unsigned ByteAlignment) {
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void MCWinCOFFStreamer::EmitZerofill(const MCSection *Section,
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MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) {
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llvm_unreachable("not implemented");
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}
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void WinCOFFStreamer::EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
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uint64_t Size, unsigned ByteAlignment) {
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void MCWinCOFFStreamer::EmitTBSSSymbol(const MCSection *Section,
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MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) {
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llvm_unreachable("not implemented");
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}
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void WinCOFFStreamer::EmitFileDirective(StringRef Filename) {
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void MCWinCOFFStreamer::EmitFileDirective(StringRef Filename) {
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getAssembler().addFileName(Filename);
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}
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// TODO: Implement this if you want to emit .comment section in COFF obj files.
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void WinCOFFStreamer::EmitIdent(StringRef IdentString) {
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void MCWinCOFFStreamer::EmitIdent(StringRef IdentString) {
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llvm_unreachable("not implemented");
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}
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void WinCOFFStreamer::EmitWin64EHHandlerData() {
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void MCWinCOFFStreamer::EmitWin64EHHandlerData() {
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MCStreamer::EmitWin64EHHandlerData();
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// We have to emit the unwind info now, because this directive
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@ -276,17 +240,20 @@ void WinCOFFStreamer::EmitWin64EHHandlerData() {
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MCWin64EHUnwindEmitter::EmitUnwindInfo(*this, getCurrentW64UnwindInfo());
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}
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void WinCOFFStreamer::FinishImpl() {
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void MCWinCOFFStreamer::FinishImpl() {
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EmitFrames(nullptr, true);
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EmitW64Tables();
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MCObjectStreamer::FinishImpl();
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}
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namespace llvm {
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MCSymbolData &MCWinCOFFStreamer::getOrCreateSymbolData(const MCSymbol *Symbol) {
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return getAssembler().getOrCreateSymbolData(*Symbol);
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}
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MCStreamer *createWinCOFFStreamer(MCContext &Context, MCAsmBackend &MAB,
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MCCodeEmitter &CE, raw_ostream &OS,
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bool RelaxAll) {
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WinCOFFStreamer *S = new WinCOFFStreamer(Context, MAB, CE, OS);
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MCWinCOFFStreamer *S = new MCWinCOFFStreamer(Context, MAB, CE, OS);
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S->getAssembler().setRelaxAll(RelaxAll);
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return S;
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}
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