#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCObjectFileInfo.h"
#include "llvm/MC/MCObjectWriter.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Support/ErrorHandling.h"
// Pin the vtables to this file.
MCTargetStreamer::~MCTargetStreamer() {}
-void ARMTargetStreamer::anchor() {}
-MCStreamer::MCStreamer(MCContext &Ctx, MCTargetStreamer *TargetStreamer)
- : Context(Ctx), TargetStreamer(TargetStreamer), EmitEHFrame(true),
- EmitDebugFrame(false), CurrentW64UnwindInfo(0), LastSymbol(0),
- AutoInitSections(false) {
+MCTargetStreamer::MCTargetStreamer(MCStreamer &S) : Streamer(S) {
+ S.setTargetStreamer(this);
+}
+
+void MCTargetStreamer::emitLabel(MCSymbol *Symbol) {}
+
+void MCTargetStreamer::finish() {}
+
+void MCTargetStreamer::emitAssignment(MCSymbol *Symbol, const MCExpr *Value) {}
+
+MCStreamer::MCStreamer(MCContext &Ctx)
+ : Context(Ctx), CurrentW64UnwindInfo(nullptr) {
SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
- if (TargetStreamer)
- TargetStreamer->setStreamer(this);
}
MCStreamer::~MCStreamer() {
for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
delete W64UnwindInfos[i];
W64UnwindInfos.clear();
- EmitEHFrame = true;
- EmitDebugFrame = false;
- CurrentW64UnwindInfo = 0;
- LastSymbol = 0;
+ CurrentW64UnwindInfo = nullptr;
SectionStack.clear();
SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
}
}
const MCExpr *MCStreamer::ForceExpAbs(const MCExpr* Expr) {
- if (Context.getAsmInfo()->hasAggressiveSymbolFolding() ||
- isa<MCSymbolRefExpr>(Expr))
+ assert(!isa<MCSymbolRefExpr>(Expr));
+ if (Context.getAsmInfo()->hasAggressiveSymbolFolding())
return Expr;
MCSymbol *ABS = Context.CreateTempSymbol();
return nulls();
}
+void MCStreamer::emitRawComment(const Twine &T, bool TabPrefix) {}
+
void MCStreamer::generateCompactUnwindEncodings(MCAsmBackend *MAB) {
for (std::vector<MCDwarfFrameInfo>::iterator I = FrameInfos.begin(),
E = FrameInfos.end(); I != E; ++I)
}
-void MCStreamer::EmitValue(const MCExpr *Value, unsigned Size) {
- EmitValueImpl(Value, Size);
+void MCStreamer::EmitValue(const MCExpr *Value, unsigned Size,
+ const SMLoc &Loc) {
+ EmitValueImpl(Value, Size, Loc);
}
void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size) {
EmitFill(NumBytes, 0);
}
-bool MCStreamer::EmitDwarfFileDirective(unsigned FileNo,
- StringRef Directory,
- StringRef Filename, unsigned CUID) {
- return getContext().GetDwarfFile(Directory, Filename, FileNo, CUID) == 0;
+unsigned MCStreamer::EmitDwarfFileDirective(unsigned FileNo,
+ StringRef Directory,
+ StringRef Filename, unsigned CUID) {
+ return getContext().GetDwarfFile(Directory, Filename, FileNo, CUID);
}
void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
Discriminator);
}
+MCSymbol *MCStreamer::getDwarfLineTableSymbol(unsigned CUID) {
+ MCDwarfLineTable &Table = getContext().getMCDwarfLineTable(CUID);
+ if (!Table.getLabel()) {
+ StringRef Prefix = Context.getAsmInfo()->getPrivateGlobalPrefix();
+ Table.setLabel(
+ Context.GetOrCreateSymbol(Prefix + "line_table_start" + Twine(CUID)));
+ }
+ return Table.getLabel();
+}
+
MCDwarfFrameInfo *MCStreamer::getCurrentFrameInfo() {
if (FrameInfos.empty())
- return 0;
+ return nullptr;
return &FrameInfos.back();
}
MCSymbol *EHSymbol) {
}
+void MCStreamer::InitSections() {
+ SwitchSection(getContext().getObjectFileInfo()->getTextSection());
+}
+
void MCStreamer::AssignSection(MCSymbol *Symbol, const MCSection *Section) {
if (Section)
Symbol->setSection(*Section);
assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
assert(getCurrentSection().first && "Cannot emit before setting section!");
AssignSection(Symbol, getCurrentSection().first);
- LastSymbol = Symbol;
-}
-void MCStreamer::EmitDebugLabel(MCSymbol *Symbol) {
- assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
- assert(getCurrentSection().first && "Cannot emit before setting section!");
- AssignSection(Symbol, getCurrentSection().first);
- LastSymbol = Symbol;
+ MCTargetStreamer *TS = getTargetStreamer();
+ if (TS)
+ TS->emitLabel(Symbol);
}
void MCStreamer::EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding) {
void MCStreamer::EmitCFISections(bool EH, bool Debug) {
assert(EH || Debug);
- EmitEHFrame = EH;
- EmitDebugFrame = Debug;
}
-void MCStreamer::EmitCFIStartProc() {
+void MCStreamer::EmitCFIStartProc(bool IsSimple) {
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
if (CurFrame && !CurFrame->End)
report_fatal_error("Starting a frame before finishing the previous one!");
MCDwarfFrameInfo Frame;
+ Frame.IsSimple = IsSimple;
EmitCFIStartProcImpl(Frame);
FrameInfos.push_back(Frame);
void MCStreamer::EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame) {
}
-void MCStreamer::RecordProcStart(MCDwarfFrameInfo &Frame) {
- Frame.Function = LastSymbol;
- // If the function is externally visible, we need to create a local
- // symbol to avoid relocations.
- StringRef Prefix = getContext().getAsmInfo()->getPrivateGlobalPrefix();
- if (LastSymbol && LastSymbol->getName().startswith(Prefix)) {
- Frame.Begin = LastSymbol;
- } else {
- Frame.Begin = getContext().CreateTempSymbol();
- EmitLabel(Frame.Begin);
- }
-}
-
void MCStreamer::EmitCFIEndProc() {
EnsureValidFrame();
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
}
void MCStreamer::EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) {
-}
-
-void MCStreamer::RecordProcEnd(MCDwarfFrameInfo &Frame) {
- Frame.End = getContext().CreateTempSymbol();
- EmitLabel(Frame.End);
+ // Put a dummy non-null value in Frame.End to mark that this frame has been
+ // closed.
+ Frame.End = (MCSymbol *) 1;
}
MCSymbol *MCStreamer::EmitCFICommon() {
report_fatal_error("Frame register and offset already specified!");
if (Offset & 0x0F)
report_fatal_error("Misaligned frame pointer offset!");
+ if (Offset > 240)
+ report_fatal_error("Frame offset must be less than or equal to 240!");
MCSymbol *Label = getContext().CreateTempSymbol();
MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, Label, Register, Offset);
EmitLabel(Label);
EmitLabel(CurFrame->PrologEnd);
}
+void MCStreamer::EmitCOFFSectionIndex(MCSymbol const *Symbol) {
+}
+
void MCStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
- llvm_unreachable("This file format doesn't support this directive");
}
/// EmitRawText - If this file is backed by an assembly streamer, this dumps
EmitRawTextImpl(T.toStringRef(Str));
}
-void MCStreamer::EmitFrames(MCAsmBackend *MAB, bool usingCFI) {
- if (!getNumFrameInfos())
- return;
-
- if (EmitEHFrame)
- MCDwarfFrameEmitter::Emit(*this, MAB, usingCFI, true);
-
- if (EmitDebugFrame)
- MCDwarfFrameEmitter::Emit(*this, MAB, usingCFI, false);
-}
-
void MCStreamer::EmitW64Tables() {
if (!getNumW64UnwindInfos())
return;
if (!FrameInfos.empty() && !FrameInfos.back().End)
report_fatal_error("Unfinished frame!");
+ MCTargetStreamer *TS = getTargetStreamer();
+ if (TS)
+ TS->finish();
+
FinishImpl();
}
-MCSymbolData &MCStreamer::getOrCreateSymbolData(MCSymbol *Symbol) {
- report_fatal_error("Not supported!");
- return *(static_cast<MCSymbolData*>(0));
+void MCStreamer::EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) {
+ visitUsedExpr(*Value);
+ Symbol->setVariableValue(Value);
+
+ MCTargetStreamer *TS = getTargetStreamer();
+ if (TS)
+ TS->emitAssignment(Symbol, Value);
+}
+
+void MCStreamer::visitUsedSymbol(const MCSymbol &Sym) {
+}
+
+void MCStreamer::visitUsedExpr(const MCExpr &Expr) {
+ switch (Expr.getKind()) {
+ case MCExpr::Target:
+ cast<MCTargetExpr>(Expr).visitUsedExpr(*this);
+ break;
+
+ case MCExpr::Constant:
+ break;
+
+ case MCExpr::Binary: {
+ const MCBinaryExpr &BE = cast<MCBinaryExpr>(Expr);
+ visitUsedExpr(*BE.getLHS());
+ visitUsedExpr(*BE.getRHS());
+ break;
+ }
+
+ case MCExpr::SymbolRef:
+ visitUsedSymbol(cast<MCSymbolRefExpr>(Expr).getSymbol());
+ break;
+
+ case MCExpr::Unary:
+ visitUsedExpr(*cast<MCUnaryExpr>(Expr).getSubExpr());
+ break;
+ }
}
+
+void MCStreamer::EmitInstruction(const MCInst &Inst,
+ const MCSubtargetInfo &STI) {
+ // Scan for values.
+ for (unsigned i = Inst.getNumOperands(); i--;)
+ if (Inst.getOperand(i).isExpr())
+ visitUsedExpr(*Inst.getOperand(i).getExpr());
+}
+
+void MCStreamer::EmitAssemblerFlag(MCAssemblerFlag Flag) {}
+void MCStreamer::EmitThumbFunc(MCSymbol *Func) {}
+void MCStreamer::EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) {}
+void MCStreamer::BeginCOFFSymbolDef(const MCSymbol *Symbol) {}
+void MCStreamer::EndCOFFSymbolDef() {}
+void MCStreamer::EmitFileDirective(StringRef Filename) {}
+void MCStreamer::EmitCOFFSymbolStorageClass(int StorageClass) {}
+void MCStreamer::EmitCOFFSymbolType(int Type) {}
+void MCStreamer::EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) {}
+void MCStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
+ unsigned ByteAlignment) {}
+void MCStreamer::EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
+ uint64_t Size, unsigned ByteAlignment) {}
+void MCStreamer::ChangeSection(const MCSection *, const MCExpr *) {}
+void MCStreamer::EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) {}
+void MCStreamer::EmitBytes(StringRef Data) {}
+void MCStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size,
+ const SMLoc &Loc) {
+ visitUsedExpr(*Value);
+}
+void MCStreamer::EmitULEB128Value(const MCExpr *Value) {}
+void MCStreamer::EmitSLEB128Value(const MCExpr *Value) {}
+void MCStreamer::EmitValueToAlignment(unsigned ByteAlignment, int64_t Value,
+ unsigned ValueSize,
+ unsigned MaxBytesToEmit) {}
+void MCStreamer::EmitCodeAlignment(unsigned ByteAlignment,
+ unsigned MaxBytesToEmit) {}
+bool MCStreamer::EmitValueToOffset(const MCExpr *Offset, unsigned char Value) {
+ return false;
+}
+void MCStreamer::EmitBundleAlignMode(unsigned AlignPow2) {}
+void MCStreamer::EmitBundleLock(bool AlignToEnd) {}
+void MCStreamer::FinishImpl() {}
+void MCStreamer::EmitBundleUnlock() {}
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