#include "llvm/MC/MCAsmLayout.h"
#include "llvm/MC/MCCodeEmitter.h"
#include "llvm/MC/MCSectionCOFF.h"
-#include "llvm/Target/TargetRegistry.h"
-#include "llvm/Target/TargetAsmBackend.h"
+#include "llvm/MC/MCWin64EH.h"
+#include "llvm/MC/MCAsmBackend.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/Support/COFF.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
MCSymbol const *CurSymbol;
WinCOFFStreamer(MCContext &Context,
- TargetAsmBackend &TAB,
+ MCAsmBackend &MAB,
MCCodeEmitter &CE,
raw_ostream &OS);
virtual void InitSections();
virtual void EmitLabel(MCSymbol *Symbol);
virtual void EmitAssemblerFlag(MCAssemblerFlag Flag);
+ virtual void EmitThumbFunc(MCSymbol *Func);
virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value);
virtual void EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute);
virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue);
virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value);
virtual void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlignment);
- virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size);
+ virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
+ unsigned ByteAlignment);
virtual void EmitZerofill(const MCSection *Section, MCSymbol *Symbol,
unsigned Size,unsigned ByteAlignment);
virtual void EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
uint64_t Size, unsigned ByteAlignment);
virtual void EmitBytes(StringRef Data, unsigned AddrSpace);
- virtual void EmitValue(const MCExpr *Value, unsigned Size,
- unsigned AddrSpace);
- virtual void EmitGPRel32Value(const MCExpr *Value);
virtual void EmitValueToAlignment(unsigned ByteAlignment, int64_t Value,
unsigned ValueSize, unsigned MaxBytesToEmit);
virtual void EmitCodeAlignment(unsigned ByteAlignment,
unsigned MaxBytesToEmit);
- virtual void EmitValueToOffset(const MCExpr *Offset, unsigned char Value);
virtual void EmitFileDirective(StringRef Filename);
- virtual void EmitDwarfFileDirective(unsigned FileNo,StringRef Filename);
virtual void EmitInstruction(const MCInst &Instruction);
+ virtual void EmitWin64EHHandlerData();
virtual void Finish();
+
+private:
+ virtual void EmitInstToFragment(const MCInst &Inst) {
+ llvm_unreachable("Not used by WinCOFF.");
+ }
+ virtual void EmitInstToData(const MCInst &Inst) {
+ llvm_unreachable("Not used by WinCOFF.");
+ }
+
+ void SetSection(StringRef Section,
+ unsigned Characteristics,
+ SectionKind Kind) {
+ SwitchSection(getContext().getCOFFSection(Section, Characteristics, Kind));
+ }
+
+ void SetSectionText() {
+ SetSection(".text",
+ COFF::IMAGE_SCN_CNT_CODE
+ | COFF::IMAGE_SCN_MEM_EXECUTE
+ | COFF::IMAGE_SCN_MEM_READ,
+ SectionKind::getText());
+ EmitCodeAlignment(4, 0);
+ }
+
+ void SetSectionData() {
+ SetSection(".data",
+ COFF::IMAGE_SCN_CNT_INITIALIZED_DATA
+ | COFF::IMAGE_SCN_MEM_READ
+ | COFF::IMAGE_SCN_MEM_WRITE,
+ SectionKind::getDataRel());
+ EmitCodeAlignment(4, 0);
+ }
+
+ void SetSectionBSS() {
+ SetSection(".bss",
+ COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA
+ | COFF::IMAGE_SCN_MEM_READ
+ | COFF::IMAGE_SCN_MEM_WRITE,
+ SectionKind::getBSS());
+ EmitCodeAlignment(4, 0);
+ }
+
};
} // end anonymous namespace.
WinCOFFStreamer::WinCOFFStreamer(MCContext &Context,
- TargetAsmBackend &TAB,
+ MCAsmBackend &MAB,
MCCodeEmitter &CE,
raw_ostream &OS)
- : MCObjectStreamer(Context, TAB, OS, &CE, true)
+ : MCObjectStreamer(Context, MAB, OS, &CE)
, CurSymbol(NULL) {
}
// MCStreamer interface
void WinCOFFStreamer::InitSections() {
+ SetSectionText();
+ SetSectionData();
+ SetSectionBSS();
+ SetSectionText();
}
void WinCOFFStreamer::EmitLabel(MCSymbol *Symbol) {
- // TODO: This is copied almost exactly from the MachOStreamer. Consider
- // merging into MCObjectStreamer?
assert(Symbol->isUndefined() && "Cannot define a symbol twice!");
- assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
- assert(CurSection && "Cannot emit before setting section!");
-
- Symbol->setSection(*CurSection);
-
- MCSymbolData &SD = getAssembler().getOrCreateSymbolData(*Symbol);
-
- // FIXME: This is wasteful, we don't necessarily need to create a data
- // fragment. Instead, we should mark the symbol as pointing into the data
- // fragment if it exists, otherwise we should just queue the label and set its
- // fragment pointer when we emit the next fragment.
- MCDataFragment *DF = getOrCreateDataFragment();
-
- assert(!SD.getFragment() && "Unexpected fragment on symbol data!");
- SD.setFragment(DF);
- SD.setOffset(DF->getContents().size());
+ MCObjectStreamer::EmitLabel(Symbol);
}
void WinCOFFStreamer::EmitAssemblerFlag(MCAssemblerFlag Flag) {
llvm_unreachable("not implemented");
}
+void WinCOFFStreamer::EmitThumbFunc(MCSymbol *Func) {
+ llvm_unreachable("not implemented");
+}
+
void WinCOFFStreamer::EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) {
+ assert((Symbol->isInSection()
+ ? Symbol->getSection().getVariant() == MCSection::SV_COFF
+ : true) && "Got non COFF section in the COFF backend!");
// FIXME: This is all very ugly and depressing. What needs to happen here
// depends on quite a few things that are all part of relaxation, which we
// don't really even do.
if (Value->getKind() != MCExpr::SymbolRef) {
- // TODO: This is exactly the same as MachOStreamer. Consider merging into\r
- // MCObjectStreamer.\r
- getAssembler().getOrCreateSymbolData(*Symbol);\r
- AddValueSymbols(Value);\r
+ // TODO: This is exactly the same as MachOStreamer. Consider merging into
+ // MCObjectStreamer.
+ getAssembler().getOrCreateSymbolData(*Symbol);
+ AddValueSymbols(Value);
Symbol->setVariableValue(Value);
} else {
// FIXME: This is a horrible way to do this :(. This should really be
void WinCOFFStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
MCSymbolAttr Attribute) {
+ assert(Symbol && "Symbol must be non-null!");
+ assert((Symbol->isInSection()
+ ? Symbol->getSection().getVariant() == MCSection::SV_COFF
+ : true) && "Got non COFF section in the COFF backend!");
switch (Attribute) {
case MCSA_WeakReference:
- getAssembler().getOrCreateSymbolData(*Symbol).modifyFlags(
- COFF::SF_WeakReference,
- COFF::SF_WeakReference);
+ case MCSA_Weak: {
+ MCSymbolData &SD = getAssembler().getOrCreateSymbolData(*Symbol);
+ SD.modifyFlags(COFF::SF_WeakExternal, COFF::SF_WeakExternal);
+ SD.setExternal(true);
+ }
break;
case MCSA_Global:
}
void WinCOFFStreamer::BeginCOFFSymbolDef(MCSymbol const *Symbol) {
+ assert((Symbol->isInSection()
+ ? Symbol->getSection().getVariant() == MCSection::SV_COFF
+ : true) && "Got non COFF section in the COFF backend!");
assert(CurSymbol == NULL && "EndCOFFSymbolDef must be called between calls "
"to BeginCOFFSymbolDef!");
CurSymbol = Symbol;
void WinCOFFStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlignment) {
+ assert((Symbol->isInSection()
+ ? Symbol->getSection().getVariant() == MCSection::SV_COFF
+ : true) && "Got non COFF section in the COFF backend!");
AddCommonSymbol(Symbol, Size, ByteAlignment, true);
}
-void WinCOFFStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size) {
- AddCommonSymbol(Symbol, Size, 1, false);
+void WinCOFFStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
+ unsigned ByteAlignment) {
+ assert((Symbol->isInSection()
+ ? Symbol->getSection().getVariant() == MCSection::SV_COFF
+ : true) && "Got non COFF section in the COFF backend!");
+ AddCommonSymbol(Symbol, Size, ByteAlignment, false);
}
void WinCOFFStreamer::EmitZerofill(const MCSection *Section, MCSymbol *Symbol,
getOrCreateDataFragment()->getContents().append(Data.begin(), Data.end());
}
-void WinCOFFStreamer::EmitValue(const MCExpr *Value, unsigned Size,
- unsigned AddrSpace) {
- assert(AddrSpace == 0 && "Address space must be 0!");
-
- // TODO: This is copied exactly from the MachOStreamer. Consider merging into
- // MCObjectStreamer?
- MCDataFragment *DF = getOrCreateDataFragment();
-
- // Avoid fixups when possible.
- int64_t AbsValue;
- if (AddValueSymbols(Value)->EvaluateAsAbsolute(AbsValue)) {
- // FIXME: Endianness assumption.
- for (unsigned i = 0; i != Size; ++i)
- DF->getContents().push_back(uint8_t(AbsValue >> (i * 8)));
- } else {
- DF->addFixup(MCFixup::Create(DF->getContents().size(),
- AddValueSymbols(Value),
- MCFixup::getKindForSize(Size)));
- DF->getContents().resize(DF->getContents().size() + Size, 0);
- }
-}
-
-void WinCOFFStreamer::EmitGPRel32Value(const MCExpr *Value) {
- llvm_unreachable("not implemented");
-}
-
void WinCOFFStreamer::EmitValueToAlignment(unsigned ByteAlignment,
int64_t Value,
unsigned ValueSize,
getCurrentSectionData()->setAlignment(ByteAlignment);
}
-void WinCOFFStreamer::EmitValueToOffset(const MCExpr *Offset,
- unsigned char Value) {
- llvm_unreachable("not implemented");
-}
-
void WinCOFFStreamer::EmitFileDirective(StringRef Filename) {
// Ignore for now, linkers don't care, and proper debug
// info will be a much large effort.
}
-void WinCOFFStreamer::EmitDwarfFileDirective(unsigned FileNo,
- StringRef Filename) {
- llvm_unreachable("not implemented");
-}
-
void WinCOFFStreamer::EmitInstruction(const MCInst &Instruction) {
for (unsigned i = 0, e = Instruction.getNumOperands(); i != e; ++i)
if (Instruction.getOperand(i).isExpr())
Fragment->getFixups());
}
+void WinCOFFStreamer::EmitWin64EHHandlerData() {
+ MCStreamer::EmitWin64EHHandlerData();
+
+ // We have to emit the unwind info now, because this directive
+ // actually switches to the .xdata section!
+ MCWin64EHUnwindEmitter::EmitUnwindInfo(*this, getCurrentW64UnwindInfo());
+}
+
void WinCOFFStreamer::Finish() {
+ EmitW64Tables();
MCObjectStreamer::Finish();
}
namespace llvm
{
MCStreamer *createWinCOFFStreamer(MCContext &Context,
- TargetAsmBackend &TAB,
+ MCAsmBackend &MAB,
MCCodeEmitter &CE,
raw_ostream &OS,
bool RelaxAll) {
- WinCOFFStreamer *S = new WinCOFFStreamer(Context, TAB, CE, OS);
+ WinCOFFStreamer *S = new WinCOFFStreamer(Context, MAB, CE, OS);
S->getAssembler().setRelaxAll(RelaxAll);
return S;
}
projects / oota-llvm.git / blobdiff