#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCSymbol.h"
+#include "llvm/MC/MCValue.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
private:
MCAssembler Assembler;
-
MCCodeEmitter *Emitter;
-
MCSectionData *CurSectionData;
-
DenseMap<const MCSection*, MCSectionData*> SectionMap;
-
DenseMap<const MCSymbol*, MCSymbolData*> SymbolMap;
private:
CurSectionData(0) {}
~MCMachOStreamer() {}
- const MCValue &AddValueSymbols(const MCValue &Value) {
- if (Value.getSymA())
- getSymbolData(*const_cast<MCSymbol*>(Value.getSymA()));
- if (Value.getSymB())
- getSymbolData(*const_cast<MCSymbol*>(Value.getSymB()));
- return Value;
- }
-
const MCExpr *AddValueSymbols(const MCExpr *Value) {
switch (Value->getKind()) {
case MCExpr::Constant:
/// @{
virtual void SwitchSection(const MCSection *Section);
-
virtual void EmitLabel(MCSymbol *Symbol);
-
- virtual void EmitAssemblerFlag(AssemblerFlag Flag);
-
- virtual void EmitAssignment(MCSymbol *Symbol, const MCValue &Value);
-
- virtual void EmitSymbolAttribute(MCSymbol *Symbol, SymbolAttr Attribute);
-
+ virtual void EmitAssemblerFlag(MCAssemblerFlag Flag);
+ virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value);
+ virtual void EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute);
virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue);
-
- virtual void EmitCommonSymbol(MCSymbol *Symbol, unsigned Size,
+ virtual void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlignment);
-
+ virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) {
+ assert(0 && "macho doesn't support this directive");
+ }
+ virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size) {
+ assert(0 && "macho doesn't support this directive");
+ }
virtual void EmitZerofill(const MCSection *Section, MCSymbol *Symbol = 0,
unsigned Size = 0, unsigned ByteAlignment = 0);
-
- virtual void EmitBytes(const StringRef &Data);
-
- virtual void EmitValue(const MCValue &Value, unsigned Size);
-
+ virtual void EmitBytes(StringRef Data, unsigned AddrSpace);
+ virtual void EmitValue(const MCExpr *Value, unsigned Size,unsigned AddrSpace);
+ virtual void EmitGPRel32Value(const MCExpr *Value) {
+ assert(0 && "macho doesn't support this directive");
+ }
virtual void EmitValueToAlignment(unsigned ByteAlignment, int64_t Value = 0,
unsigned ValueSize = 1,
unsigned MaxBytesToEmit = 0);
-
- virtual void EmitValueToOffset(const MCValue &Offset,
+ virtual void EmitValueToOffset(const MCExpr *Offset,
unsigned char Value = 0);
-
+
+ virtual void EmitFileDirective(StringRef Filename) {
+ errs() << "FIXME: MCMachoStreamer:EmitFileDirective not implemented\n";
+ }
+ virtual void EmitDwarfFileDirective(unsigned FileNo, StringRef Filename) {
+ errs() << "FIXME: MCMachoStreamer:EmitDwarfFileDirective not implemented\n";
+ }
+
virtual void EmitInstruction(const MCInst &Inst);
-
virtual void Finish();
/// @}
Symbol->setSection(*CurSection);
}
-void MCMachOStreamer::EmitAssemblerFlag(AssemblerFlag Flag) {
+void MCMachOStreamer::EmitAssemblerFlag(MCAssemblerFlag Flag) {
switch (Flag) {
- case SubsectionsViaSymbols:
+ case MCAF_SubsectionsViaSymbols:
Assembler.setSubsectionsViaSymbols(true);
return;
}
assert(0 && "invalid assembler flag!");
}
-void MCMachOStreamer::EmitAssignment(MCSymbol *Symbol, const MCValue &Value) {
+void MCMachOStreamer::EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) {
// Only absolute symbols can be redefined.
assert((Symbol->isUndefined() || Symbol->isAbsolute()) &&
"Cannot define a symbol twice!");
- llvm_unreachable("FIXME: Not yet implemented!");
+ // FIXME: Lift context changes into super class.
+ // FIXME: Set associated section.
+ Symbol->setValue(Value);
}
void MCMachOStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
- SymbolAttr Attribute) {
+ MCSymbolAttr Attribute) {
// Indirect symbols are handled differently, to match how 'as' handles
// them. This makes writing matching .o files easier.
- if (Attribute == MCStreamer::IndirectSymbol) {
+ if (Attribute == MCSA_IndirectSymbol) {
// Note that we intentionally cannot use the symbol data here; this is
// important for matching the string table that 'as' generates.
IndirectSymbolData ISD;
// In the future it might be worth trying to make these operations more well
// defined.
switch (Attribute) {
- case MCStreamer::IndirectSymbol:
- case MCStreamer::Hidden:
- case MCStreamer::Internal:
- case MCStreamer::Protected:
- case MCStreamer::Weak:
+ case MCSA_Invalid:
+ case MCSA_ELF_TypeFunction:
+ case MCSA_ELF_TypeIndFunction:
+ case MCSA_ELF_TypeObject:
+ case MCSA_ELF_TypeTLS:
+ case MCSA_ELF_TypeCommon:
+ case MCSA_ELF_TypeNoType:
+ case MCSA_IndirectSymbol:
+ case MCSA_Hidden:
+ case MCSA_Internal:
+ case MCSA_Protected:
+ case MCSA_Weak:
+ case MCSA_Local:
assert(0 && "Invalid symbol attribute for Mach-O!");
break;
- case MCStreamer::Global:
+ case MCSA_Global:
SD.setExternal(true);
break;
- case MCStreamer::LazyReference:
+ case MCSA_LazyReference:
// FIXME: This requires -dynamic.
SD.setFlags(SD.getFlags() | SF_NoDeadStrip);
if (Symbol->isUndefined())
// Since .reference sets the no dead strip bit, it is equivalent to
// .no_dead_strip in practice.
- case MCStreamer::Reference:
- case MCStreamer::NoDeadStrip:
+ case MCSA_Reference:
+ case MCSA_NoDeadStrip:
SD.setFlags(SD.getFlags() | SF_NoDeadStrip);
break;
- case MCStreamer::PrivateExtern:
+ case MCSA_PrivateExtern:
SD.setExternal(true);
SD.setPrivateExtern(true);
break;
- case MCStreamer::WeakReference:
+ case MCSA_WeakReference:
// FIXME: This requires -dynamic.
if (Symbol->isUndefined())
SD.setFlags(SD.getFlags() | SF_WeakReference);
break;
- case MCStreamer::WeakDefinition:
+ case MCSA_WeakDefinition:
// FIXME: 'as' enforces that this is defined and global. The manual claims
// it has to be in a coalesced section, but this isn't enforced.
SD.setFlags(SD.getFlags() | SF_WeakDefinition);
getSymbolData(*Symbol).setFlags(DescValue & SF_DescFlagsMask);
}
-void MCMachOStreamer::EmitCommonSymbol(MCSymbol *Symbol, unsigned Size,
+void MCMachOStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlignment) {
// FIXME: Darwin 'as' does appear to allow redef of a .comm by itself.
assert(Symbol->isUndefined() && "Cannot define a symbol twice!");
SectData.setAlignment(ByteAlignment);
}
-void MCMachOStreamer::EmitBytes(const StringRef &Data) {
+void MCMachOStreamer::EmitBytes(StringRef Data, unsigned AddrSpace) {
MCDataFragment *DF = dyn_cast_or_null<MCDataFragment>(getCurrentFragment());
if (!DF)
DF = new MCDataFragment(CurSectionData);
DF->getContents().append(Data.begin(), Data.end());
}
-void MCMachOStreamer::EmitValue(const MCValue &Value, unsigned Size) {
- new MCFillFragment(AddValueSymbols(Value), Size, 1, CurSectionData);
+void MCMachOStreamer::EmitValue(const MCExpr *Value, unsigned Size,
+ unsigned AddrSpace) {
+ new MCFillFragment(*AddValueSymbols(Value), Size, 1, CurSectionData);
}
void MCMachOStreamer::EmitValueToAlignment(unsigned ByteAlignment,
CurSectionData->setAlignment(ByteAlignment);
}
-void MCMachOStreamer::EmitValueToOffset(const MCValue &Offset,
+void MCMachOStreamer::EmitValueToOffset(const MCExpr *Offset,
unsigned char Value) {
- new MCOrgFragment(AddValueSymbols(Offset), Value, CurSectionData);
+ new MCOrgFragment(*Offset, Value, CurSectionData);
}
void MCMachOStreamer::EmitInstruction(const MCInst &Inst) {
if (!Emitter)
llvm_unreachable("no code emitter available!");
+ CurSectionData->setHasInstructions(true);
+
// FIXME: Relocations!
SmallString<256> Code;
raw_svector_ostream VecOS(Code);
Emitter->EncodeInstruction(Inst, VecOS);
- EmitBytes(VecOS.str());
+ EmitBytes(VecOS.str(), 0);
}
void MCMachOStreamer::Finish() {
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