#include "llvm/Support/ErrorHandling.h"
#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCCodeEmitter.h"
+#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCDwarf.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Target/TargetAsmBackend.h"
+#include "llvm/Target/TargetAsmInfo.h"
using namespace llvm;
MCObjectStreamer::MCObjectStreamer(MCContext &Context, TargetAsmBackend &TAB,
- raw_ostream &_OS, MCCodeEmitter *_Emitter,
- bool _PadSectionToAlignment)
- : MCStreamer(Context), Assembler(new MCAssembler(Context, TAB,
- *_Emitter,
- _PadSectionToAlignment,
- _OS)),
+ raw_ostream &OS, MCCodeEmitter *Emitter_)
+ : MCStreamer(Context),
+ Assembler(new MCAssembler(Context, TAB,
+ *Emitter_, *TAB.createObjectWriter(OS),
+ OS)),
CurSectionData(0)
{
}
MCObjectStreamer::~MCObjectStreamer() {
delete &Assembler->getBackend();
delete &Assembler->getEmitter();
+ delete &Assembler->getWriter();
delete Assembler;
}
return Value;
}
-void MCObjectStreamer::EmitValue(const MCExpr *Value, unsigned Size,
- unsigned AddrSpace, bool UseSet) {
+void MCObjectStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size,
+ bool isPCRel, unsigned AddrSpace) {
assert(AddrSpace == 0 && "Address space must be 0!");
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, false)));
- DF->getContents().resize(DF->getContents().size() + Size, 0);
+ EmitIntValue(AbsValue, Size, AddrSpace);
+ return;
}
+ DF->addFixup(MCFixup::Create(DF->getContents().size(),
+ AddValueSymbols(Value),
+ MCFixup::getKindForSize(Size, isPCRel)));
+ DF->getContents().resize(DF->getContents().size() + Size, 0);
}
void MCObjectStreamer::EmitLabel(MCSymbol *Symbol) {
void MCObjectStreamer::EmitULEB128Value(const MCExpr *Value,
unsigned AddrSpace) {
+ int64_t IntValue;
+ if (Value->EvaluateAsAbsolute(IntValue)) {
+ EmitULEB128IntValue(IntValue, AddrSpace);
+ return;
+ }
new MCLEBFragment(*Value, false, getCurrentSectionData());
}
void MCObjectStreamer::EmitSLEB128Value(const MCExpr *Value,
unsigned AddrSpace) {
+ int64_t IntValue;
+ if (Value->EvaluateAsAbsolute(IntValue)) {
+ EmitSLEB128IntValue(IntValue, AddrSpace);
+ return;
+ }
new MCLEBFragment(*Value, true, getCurrentSectionData());
}
getAssembler().getEmitter().EncodeInstruction(Inst, VecOS, IF->getFixups());
}
+void MCObjectStreamer::EmitDwarfAdvanceLineAddr(int64_t LineDelta,
+ const MCSymbol *LastLabel,
+ const MCSymbol *Label) {
+ if (!LastLabel) {
+ int PointerSize = getContext().getTargetAsmInfo().getPointerSize();
+ EmitDwarfSetLineAddr(LineDelta, Label, PointerSize);
+ return;
+ }
+ MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None;
+ const MCExpr *LabelRef =
+ MCSymbolRefExpr::Create(Label, Variant, getContext());
+ const MCExpr *LastLabelRef =
+ MCSymbolRefExpr::Create(LastLabel, Variant, getContext());
+ const MCExpr *AddrDelta =
+ MCBinaryExpr::Create(MCBinaryExpr::Sub, LabelRef, LastLabelRef,
+ getContext());
+ int64_t Res;
+ if (AddrDelta->EvaluateAsAbsolute(Res)) {
+ MCDwarfLineAddr::Emit(this, LineDelta, Res);
+ return;
+ }
+ new MCDwarfLineAddrFragment(LineDelta, *AddrDelta, getCurrentSectionData());
+}
+
void MCObjectStreamer::EmitValueToOffset(const MCExpr *Offset,
unsigned char Value) {
new MCOrgFragment(*Offset, Value, getCurrentSectionData());
}
void MCObjectStreamer::Finish() {
+ // Dump out the dwarf file & directory tables and line tables.
+ if (getContext().hasDwarfFiles())
+ MCDwarfFileTable::Emit(this);
+
getAssembler().Finish();
}