diff options
Diffstat (limited to 'lib/MC/MCStreamer.cpp')
-rw-r--r-- | lib/MC/MCStreamer.cpp | 103 |
1 files changed, 47 insertions, 56 deletions
diff --git a/lib/MC/MCStreamer.cpp b/lib/MC/MCStreamer.cpp index 6542f42..2e1d69b 100644 --- a/lib/MC/MCStreamer.cpp +++ b/lib/MC/MCStreamer.cpp @@ -10,6 +10,7 @@ #include "llvm/MC/MCStreamer.h" #include "llvm/ADT/SmallString.h" #include "llvm/ADT/Twine.h" +#include "llvm/MC/MCAsmBackend.h" #include "llvm/MC/MCAsmInfo.h" #include "llvm/MC/MCContext.h" #include "llvm/MC/MCExpr.h" @@ -21,10 +22,17 @@ #include <cstdlib> using namespace llvm; -MCStreamer::MCStreamer(StreamerKind Kind, MCContext &Ctx) - : Kind(Kind), Context(Ctx), EmitEHFrame(true), EmitDebugFrame(false), - CurrentW64UnwindInfo(0), LastSymbol(0), AutoInitSections(false) { +// 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) { SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>()); + if (TargetStreamer) + TargetStreamer->setStreamer(this); } MCStreamer::~MCStreamer() { @@ -72,6 +80,13 @@ raw_ostream &MCStreamer::GetCommentOS() { return nulls(); } +void MCStreamer::generateCompactUnwindEncodings(MCAsmBackend *MAB) { + for (std::vector<MCDwarfFrameInfo>::iterator I = FrameInfos.begin(), + E = FrameInfos.end(); I != E; ++I) + I->CompactUnwindEncoding = + (MAB ? MAB->generateCompactUnwindEncoding(I->Instructions) : 0); +} + void MCStreamer::EmitDwarfSetLineAddr(int64_t LineDelta, const MCSymbol *Label, int PointerSize) { // emit the sequence to set the address @@ -183,17 +198,28 @@ void MCStreamer::EmitEHSymAttributes(const MCSymbol *Symbol, MCSymbol *EHSymbol) { } +void MCStreamer::AssignSection(MCSymbol *Symbol, const MCSection *Section) { + if (Section) + Symbol->setSection(*Section); + else + Symbol->setUndefined(); + + // As we emit symbols into a section, track the order so that they can + // be sorted upon later. Zero is reserved to mean 'unemitted'. + SymbolOrdering[Symbol] = 1 + SymbolOrdering.size(); +} + void MCStreamer::EmitLabel(MCSymbol *Symbol) { assert(!Symbol->isVariable() && "Cannot emit a variable symbol!"); assert(getCurrentSection().first && "Cannot emit before setting section!"); - Symbol->setSection(*getCurrentSection().first); + 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!"); - Symbol->setSection(*getCurrentSection().first); + AssignSection(Symbol, getCurrentSection().first); LastSymbol = Symbol; } @@ -380,6 +406,14 @@ void MCStreamer::EmitCFIRegister(int64_t Register1, int64_t Register2) { CurFrame->Instructions.push_back(Instruction); } +void MCStreamer::EmitCFIWindowSave() { + MCSymbol *Label = EmitCFICommon(); + MCCFIInstruction Instruction = + MCCFIInstruction::createWindowSave(Label); + MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); + CurFrame->Instructions.push_back(Instruction); +} + void MCStreamer::setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame) { W64UnwindInfos.push_back(Frame); CurrentW64UnwindInfo = W64UnwindInfos.back(); @@ -470,7 +504,9 @@ void MCStreamer::EmitWin64EHSetFrame(unsigned Register, unsigned Offset) { report_fatal_error("Frame register and offset already specified!"); if (Offset & 0x0F) report_fatal_error("Misaligned frame pointer offset!"); - MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, 0, Register, Offset); + MCSymbol *Label = getContext().CreateTempSymbol(); + MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, Label, Register, Offset); + EmitLabel(Label); CurFrame->LastFrameInst = CurFrame->Instructions.size(); CurFrame->Instructions.push_back(Inst); } @@ -534,54 +570,10 @@ void MCStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) { llvm_unreachable("This file format doesn't support this directive"); } -void MCStreamer::EmitFnStart() { - errs() << "Not implemented yet\n"; - abort(); -} - -void MCStreamer::EmitFnEnd() { - errs() << "Not implemented yet\n"; - abort(); -} - -void MCStreamer::EmitCantUnwind() { - errs() << "Not implemented yet\n"; - abort(); -} - -void MCStreamer::EmitHandlerData() { - errs() << "Not implemented yet\n"; - abort(); -} - -void MCStreamer::EmitPersonality(const MCSymbol *Personality) { - errs() << "Not implemented yet\n"; - abort(); -} - -void MCStreamer::EmitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset) { - errs() << "Not implemented yet\n"; - abort(); -} - -void MCStreamer::EmitPad(int64_t Offset) { - errs() << "Not implemented yet\n"; - abort(); -} - -void MCStreamer::EmitRegSave(const SmallVectorImpl<unsigned> &RegList, bool) { - errs() << "Not implemented yet\n"; - abort(); -} - -void MCStreamer::EmitTCEntry(const MCSymbol &S) { - llvm_unreachable("Unsupported method"); -} - /// EmitRawText - If this file is backed by an assembly streamer, this dumps /// the specified string in the output .s file. This capability is /// indicated by the hasRawTextSupport() predicate. -void MCStreamer::EmitRawText(StringRef String) { +void MCStreamer::EmitRawTextImpl(StringRef String) { errs() << "EmitRawText called on an MCStreamer that doesn't support it, " " something must not be fully mc'ized\n"; abort(); @@ -589,19 +581,18 @@ void MCStreamer::EmitRawText(StringRef String) { void MCStreamer::EmitRawText(const Twine &T) { SmallString<128> Str; - T.toVector(Str); - EmitRawText(Str.str()); + EmitRawTextImpl(T.toStringRef(Str)); } -void MCStreamer::EmitFrames(bool usingCFI) { +void MCStreamer::EmitFrames(MCAsmBackend *MAB, bool usingCFI) { if (!getNumFrameInfos()) return; if (EmitEHFrame) - MCDwarfFrameEmitter::Emit(*this, usingCFI, true); + MCDwarfFrameEmitter::Emit(*this, MAB, usingCFI, true); if (EmitDebugFrame) - MCDwarfFrameEmitter::Emit(*this, usingCFI, false); + MCDwarfFrameEmitter::Emit(*this, MAB, usingCFI, false); } void MCStreamer::EmitW64Tables() { |