#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCObjectFileInfo.h"
#include "llvm/MC/MCObjectWriter.h"
+#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCWin64EH.h"
#include "llvm/Support/ErrorHandling.h"
}
void MCStreamer::reset() {
+ DwarfFrameInfos.clear();
for (unsigned i = 0; i < getNumWinFrameInfos(); ++i)
delete WinFrameInfos[i];
WinFrameInfos.clear();
CurrentWinFrameInfo = nullptr;
+ SymbolOrdering.clear();
SectionStack.clear();
SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
}
/// EmitIntValue - Special case of EmitValue that avoids the client having to
/// pass in a MCExpr for constant integers.
void MCStreamer::EmitIntValue(uint64_t Value, unsigned Size) {
- assert(Size <= 8 && "Invalid size");
+ assert(1 <= Size && Size <= 8 && "Invalid size");
assert((isUIntN(8 * Size, Value) || isIntN(8 * Size, Value)) &&
"Invalid size");
char buf[8];
unsigned MCStreamer::EmitDwarfFileDirective(unsigned FileNo,
StringRef Directory,
StringRef Filename, unsigned CUID) {
- return getContext().GetDwarfFile(Directory, Filename, FileNo, CUID);
+ return getContext().getDwarfFile(Directory, Filename, FileNo, CUID);
}
void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
if (!Table.getLabel()) {
StringRef Prefix = Context.getAsmInfo()->getPrivateGlobalPrefix();
Table.setLabel(
- Context.GetOrCreateSymbol(Prefix + "line_table_start" + Twine(CUID)));
+ Context.getOrCreateSymbol(Prefix + "line_table_start" + Twine(CUID)));
}
return Table.getLabel();
}
MCSymbol *EHSymbol) {
}
-void MCStreamer::InitSections() {
+void MCStreamer::InitSections(bool NoExecStack) {
SwitchSection(getContext().getObjectFileInfo()->getTextSection());
}
Frame.IsSimple = IsSimple;
EmitCFIStartProcImpl(Frame);
+ const MCAsmInfo* MAI = Context.getAsmInfo();
+ if (MAI) {
+ for (const MCCFIInstruction& Inst : MAI->getInitialFrameState()) {
+ if (Inst.getOperation() == MCCFIInstruction::OpDefCfa ||
+ Inst.getOperation() == MCCFIInstruction::OpDefCfaRegister) {
+ Frame.CurrentCfaRegister = Inst.getRegister();
+ }
+ }
+ }
+
DwarfFrameInfos.push_back(Frame);
}
MCSymbol *MCStreamer::EmitCFICommon() {
EnsureValidDwarfFrame();
- MCSymbol *Label = getContext().CreateTempSymbol();
+ MCSymbol *Label = getContext().createTempSymbol();
EmitLabel(Label);
return Label;
}
MCCFIInstruction::createDefCfa(Label, Register, Offset);
MCDwarfFrameInfo *CurFrame = getCurrentDwarfFrameInfo();
CurFrame->Instructions.push_back(Instruction);
+ CurFrame->CurrentCfaRegister = static_cast<unsigned>(Register);
}
void MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
MCCFIInstruction::createDefCfaRegister(Label, Register);
MCDwarfFrameInfo *CurFrame = getCurrentDwarfFrameInfo();
CurFrame->Instructions.push_back(Instruction);
+ CurFrame->CurrentCfaRegister = static_cast<unsigned>(Register);
}
void MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
if (CurrentWinFrameInfo && !CurrentWinFrameInfo->End)
report_fatal_error("Starting a function before ending the previous one!");
- MCSymbol *StartProc = getContext().CreateTempSymbol();
+ MCSymbol *StartProc = getContext().createTempSymbol();
EmitLabel(StartProc);
WinFrameInfos.push_back(new WinEH::FrameInfo(Symbol, StartProc));
if (CurrentWinFrameInfo->ChainedParent)
report_fatal_error("Not all chained regions terminated!");
- MCSymbol *Label = getContext().CreateTempSymbol();
+ MCSymbol *Label = getContext().createTempSymbol();
EmitLabel(Label);
CurrentWinFrameInfo->End = Label;
}
void MCStreamer::EmitWinCFIStartChained() {
EnsureValidWinFrameInfo();
- MCSymbol *StartProc = getContext().CreateTempSymbol();
+ MCSymbol *StartProc = getContext().createTempSymbol();
EmitLabel(StartProc);
WinFrameInfos.push_back(new WinEH::FrameInfo(CurrentWinFrameInfo->Function,
if (!CurrentWinFrameInfo->ChainedParent)
report_fatal_error("End of a chained region outside a chained region!");
- MCSymbol *Label = getContext().CreateTempSymbol();
+ MCSymbol *Label = getContext().createTempSymbol();
EmitLabel(Label);
CurrentWinFrameInfo->End = Label;
void MCStreamer::EmitWinCFIPushReg(unsigned Register) {
EnsureValidWinFrameInfo();
- MCSymbol *Label = getContext().CreateTempSymbol();
+ MCSymbol *Label = getContext().createTempSymbol();
EmitLabel(Label);
WinEH::Instruction Inst = Win64EH::Instruction::PushNonVol(Label, Register);
if (Offset > 240)
report_fatal_error("Frame offset must be less than or equal to 240!");
- MCSymbol *Label = getContext().CreateTempSymbol();
+ MCSymbol *Label = getContext().createTempSymbol();
EmitLabel(Label);
WinEH::Instruction Inst =
if (Size & 7)
report_fatal_error("Misaligned stack allocation!");
- MCSymbol *Label = getContext().CreateTempSymbol();
+ MCSymbol *Label = getContext().createTempSymbol();
EmitLabel(Label);
WinEH::Instruction Inst = Win64EH::Instruction::Alloc(Label, Size);
if (Offset & 7)
report_fatal_error("Misaligned saved register offset!");
- MCSymbol *Label = getContext().CreateTempSymbol();
+ MCSymbol *Label = getContext().createTempSymbol();
EmitLabel(Label);
WinEH::Instruction Inst =
if (Offset & 0x0F)
report_fatal_error("Misaligned saved vector register offset!");
- MCSymbol *Label = getContext().CreateTempSymbol();
+ MCSymbol *Label = getContext().createTempSymbol();
EmitLabel(Label);
WinEH::Instruction Inst =
if (CurrentWinFrameInfo->Instructions.size() > 0)
report_fatal_error("If present, PushMachFrame must be the first UOP");
- MCSymbol *Label = getContext().CreateTempSymbol();
+ MCSymbol *Label = getContext().createTempSymbol();
EmitLabel(Label);
WinEH::Instruction Inst = Win64EH::Instruction::PushMachFrame(Label, Code);
void MCStreamer::EmitWinCFIEndProlog() {
EnsureValidWinFrameInfo();
- MCSymbol *Label = getContext().CreateTempSymbol();
+ MCSymbol *Label = getContext().createTempSymbol();
EmitLabel(Label);
CurrentWinFrameInfo->PrologEnd = Label;
void MCStreamer::EmitBundleLock(bool AlignToEnd) {}
void MCStreamer::FinishImpl() {}
void MCStreamer::EmitBundleUnlock() {}
+
+void MCStreamer::SwitchSection(const MCSection *Section,
+ const MCExpr *Subsection) {
+ assert(Section && "Cannot switch to a null section!");
+ MCSectionSubPair curSection = SectionStack.back().first;
+ SectionStack.back().second = curSection;
+ if (MCSectionSubPair(Section, Subsection) != curSection) {
+ SectionStack.back().first = MCSectionSubPair(Section, Subsection);
+ assert(!Section->hasEnded() && "Section already ended");
+ ChangeSection(Section, Subsection);
+ MCSymbol *Sym = Section->getBeginSymbol();
+ if (Sym && !Sym->isInSection())
+ EmitLabel(Sym);
+ }
+}
+
+MCSymbol *MCStreamer::endSection(const MCSection *Section) {
+ // TODO: keep track of the last subsection so that this symbol appears in the
+ // correct place.
+ MCSymbol *Sym = Section->getEndSymbol(Context);
+ if (Sym->isInSection())
+ return Sym;
+
+ SwitchSection(Section);
+ EmitLabel(Sym);
+ return Sym;
+}