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https://github.com/c64scene-ar/llvm-6502.git
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Split MCELFStreamer into a header file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169603 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Logan Chien
parent
f722b007b2
commit
645016533d
109
include/llvm/MC/MCELFStreamer.h
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109
include/llvm/MC/MCELFStreamer.h
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@ -0,0 +1,109 @@
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//===- MCELFStreamer.h - MCStreamer ELF 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_MCELFSTREAMER_H
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#define LLVM_MC_MCELFSTREAMER_H
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#include "llvm/ADT/SmallPtrSet.h"
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#include "llvm/MC/MCDirectives.h"
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#include "llvm/MC/MCObjectStreamer.h"
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#include "llvm/MC/SectionKind.h"
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#include <vector>
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#include <stdint.h>
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namespace llvm {
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class MCAsmBackend;
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class MCAssembler;
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class MCCodeEmitter;
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class MCExpr;
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class MCInst;
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class MCSymbol;
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class MCSymbolData;
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class raw_ostream;
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class MCELFStreamer : public MCObjectStreamer {
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public:
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MCELFStreamer(MCContext &Context, MCAsmBackend &TAB,
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raw_ostream &OS, MCCodeEmitter *Emitter)
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: MCObjectStreamer(Context, TAB, OS, Emitter) {}
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MCELFStreamer(MCContext &Context, MCAsmBackend &TAB,
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raw_ostream &OS, MCCodeEmitter *Emitter,
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MCAssembler *Assembler)
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: MCObjectStreamer(Context, TAB, OS, Emitter, Assembler) {}
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virtual ~MCELFStreamer();
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/// @name MCStreamer Interface
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/// @{
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virtual void InitSections();
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virtual void ChangeSection(const MCSection *Section);
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virtual void EmitLabel(MCSymbol *Symbol);
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virtual void EmitAssemblerFlag(MCAssemblerFlag Flag);
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virtual void EmitThumbFunc(MCSymbol *Func);
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virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value);
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virtual void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol);
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virtual void EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute);
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virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue);
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virtual void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment);
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virtual void BeginCOFFSymbolDef(const MCSymbol *Symbol);
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virtual void EmitCOFFSymbolStorageClass(int StorageClass);
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virtual void EmitCOFFSymbolType(int Type);
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virtual void EndCOFFSymbolDef();
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virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value);
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virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment);
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virtual void EmitZerofill(const MCSection *Section, MCSymbol *Symbol = 0,
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uint64_t Size = 0, unsigned ByteAlignment = 0);
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virtual void EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
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uint64_t Size, unsigned ByteAlignment = 0);
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virtual void EmitValueImpl(const MCExpr *Value, unsigned Size,
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unsigned AddrSpace);
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virtual void EmitFileDirective(StringRef Filename);
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virtual void EmitTCEntry(const MCSymbol &S);
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virtual void FinishImpl();
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/// @}
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private:
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virtual void EmitInstToFragment(const MCInst &Inst);
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virtual void EmitInstToData(const MCInst &Inst);
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void fixSymbolsInTLSFixups(const MCExpr *expr);
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struct LocalCommon {
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MCSymbolData *SD;
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uint64_t Size;
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unsigned ByteAlignment;
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};
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std::vector<LocalCommon> LocalCommons;
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SmallPtrSet<MCSymbol *, 16> BindingExplicitlySet;
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void SetSection(StringRef Section, unsigned Type, unsigned Flags,
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SectionKind Kind);
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void SetSectionData();
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void SetSectionText();
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void SetSectionBss();
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};
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} // end namespace llvm
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#endif
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@ -11,7 +11,8 @@
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/MC/MCStreamer.h"
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#include "llvm/MC/MCELFStreamer.h"
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#include "MCELF.h"
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#include "llvm/ADT/SmallPtrSet.h"
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#include "llvm/ADT/StringExtras.h"
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@ -35,117 +36,37 @@
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using namespace llvm;
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namespace {
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class MCELFStreamer : public MCObjectStreamer {
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public:
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MCELFStreamer(MCContext &Context, MCAsmBackend &TAB,
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raw_ostream &OS, MCCodeEmitter *Emitter)
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: MCObjectStreamer(Context, TAB, OS, Emitter) {}
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MCELFStreamer(MCContext &Context, MCAsmBackend &TAB,
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raw_ostream &OS, MCCodeEmitter *Emitter,
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MCAssembler *Assembler)
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: MCObjectStreamer(Context, TAB, OS, Emitter, Assembler) {}
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inline void MCELFStreamer::SetSection(StringRef Section, unsigned Type,
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unsigned Flags, SectionKind Kind) {
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SwitchSection(getContext().getELFSection(Section, Type, Flags, Kind));
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}
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inline void MCELFStreamer::SetSectionData() {
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SetSection(".data",
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ELF::SHT_PROGBITS,
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ELF::SHF_WRITE | ELF::SHF_ALLOC,
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SectionKind::getDataRel());
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EmitCodeAlignment(4, 0);
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}
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~MCELFStreamer() {}
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inline void MCELFStreamer::SetSectionText() {
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SetSection(".text",
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ELF::SHT_PROGBITS,
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ELF::SHF_EXECINSTR | ELF::SHF_ALLOC,
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SectionKind::getText());
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EmitCodeAlignment(4, 0);
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}
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/// @name MCStreamer Interface
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/// @{
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inline void MCELFStreamer::SetSectionBss() {
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SetSection(".bss",
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ELF::SHT_NOBITS,
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ELF::SHF_WRITE | ELF::SHF_ALLOC,
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SectionKind::getBSS());
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EmitCodeAlignment(4, 0);
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}
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virtual void InitSections();
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virtual void ChangeSection(const MCSection *Section);
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virtual void EmitLabel(MCSymbol *Symbol);
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virtual void EmitAssemblerFlag(MCAssemblerFlag Flag);
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virtual void EmitThumbFunc(MCSymbol *Func);
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virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value);
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virtual void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol);
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virtual void EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute);
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virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) {
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llvm_unreachable("ELF doesn't support this directive");
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}
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virtual void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment);
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virtual void BeginCOFFSymbolDef(const MCSymbol *Symbol) {
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llvm_unreachable("ELF doesn't support this directive");
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}
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virtual void EmitCOFFSymbolStorageClass(int StorageClass) {
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llvm_unreachable("ELF doesn't support this directive");
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}
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virtual void EmitCOFFSymbolType(int Type) {
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llvm_unreachable("ELF doesn't support this directive");
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}
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virtual void EndCOFFSymbolDef() {
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llvm_unreachable("ELF doesn't support this directive");
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}
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virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) {
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MCSymbolData &SD = getAssembler().getOrCreateSymbolData(*Symbol);
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SD.setSize(Value);
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}
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virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment);
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virtual void EmitZerofill(const MCSection *Section, MCSymbol *Symbol = 0,
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uint64_t Size = 0, unsigned ByteAlignment = 0) {
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llvm_unreachable("ELF doesn't support this directive");
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}
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virtual void EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
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uint64_t Size, unsigned ByteAlignment = 0) {
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llvm_unreachable("ELF doesn't support this directive");
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}
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virtual void EmitValueImpl(const MCExpr *Value, unsigned Size,
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unsigned AddrSpace);
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virtual void EmitFileDirective(StringRef Filename);
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virtual void EmitTCEntry(const MCSymbol &S);
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virtual void FinishImpl();
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private:
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virtual void EmitInstToFragment(const MCInst &Inst);
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virtual void EmitInstToData(const MCInst &Inst);
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void fixSymbolsInTLSFixups(const MCExpr *expr);
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struct LocalCommon {
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MCSymbolData *SD;
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uint64_t Size;
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unsigned ByteAlignment;
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};
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std::vector<LocalCommon> LocalCommons;
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SmallPtrSet<MCSymbol *, 16> BindingExplicitlySet;
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/// @}
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void SetSection(StringRef Section, unsigned Type, unsigned Flags,
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SectionKind Kind) {
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SwitchSection(getContext().getELFSection(Section, Type, Flags, Kind));
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}
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void SetSectionData() {
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SetSection(".data", ELF::SHT_PROGBITS,
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ELF::SHF_WRITE |ELF::SHF_ALLOC,
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SectionKind::getDataRel());
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EmitCodeAlignment(4, 0);
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}
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void SetSectionText() {
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SetSection(".text", ELF::SHT_PROGBITS,
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ELF::SHF_EXECINSTR |
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ELF::SHF_ALLOC, SectionKind::getText());
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EmitCodeAlignment(4, 0);
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}
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void SetSectionBss() {
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SetSection(".bss", ELF::SHT_NOBITS,
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ELF::SHF_WRITE |
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ELF::SHF_ALLOC, SectionKind::getBSS());
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EmitCodeAlignment(4, 0);
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}
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};
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MCELFStreamer::~MCELFStreamer() {
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}
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void MCELFStreamer::InitSections() {
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@ -341,6 +262,11 @@ void MCELFStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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SD.setSize(MCConstantExpr::Create(Size, getContext()));
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}
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void MCELFStreamer::EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) {
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MCSymbolData &SD = getAssembler().getOrCreateSymbolData(*Symbol);
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SD.setSize(Value);
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}
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void MCELFStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) {
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// FIXME: Should this be caught and done earlier?
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@ -487,3 +413,33 @@ MCStreamer *llvm::createELFStreamer(MCContext &Context, MCAsmBackend &MAB,
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S->getAssembler().setNoExecStack(true);
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return S;
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}
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void MCELFStreamer::EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) {
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llvm_unreachable("ELF doesn't support this directive");
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}
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void MCELFStreamer::BeginCOFFSymbolDef(const MCSymbol *Symbol) {
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llvm_unreachable("ELF doesn't support this directive");
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}
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void MCELFStreamer::EmitCOFFSymbolStorageClass(int StorageClass) {
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llvm_unreachable("ELF doesn't support this directive");
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}
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void MCELFStreamer::EmitCOFFSymbolType(int Type) {
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llvm_unreachable("ELF doesn't support this directive");
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}
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void MCELFStreamer::EndCOFFSymbolDef() {
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llvm_unreachable("ELF doesn't support this directive");
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}
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void MCELFStreamer::EmitZerofill(const MCSection *Section, MCSymbol *Symbol,
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uint64_t Size, unsigned ByteAlignment) {
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llvm_unreachable("ELF doesn't support this directive");
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}
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void MCELFStreamer::EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
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uint64_t Size, unsigned ByteAlignment) {
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llvm_unreachable("ELF doesn't support this directive");
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}
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