diff options
Diffstat (limited to 'contrib/llvm/lib/MC/MCStreamer.cpp')
| -rw-r--r-- | contrib/llvm/lib/MC/MCStreamer.cpp | 159 |
1 files changed, 90 insertions, 69 deletions
diff --git a/contrib/llvm/lib/MC/MCStreamer.cpp b/contrib/llvm/lib/MC/MCStreamer.cpp index afece0b..d02e553 100644 --- a/contrib/llvm/lib/MC/MCStreamer.cpp +++ b/contrib/llvm/lib/MC/MCStreamer.cpp @@ -7,24 +7,24 @@ // //===----------------------------------------------------------------------===// +#include "llvm/MC/MCStreamer.h" +#include "llvm/ADT/SmallString.h" +#include "llvm/ADT/Twine.h" #include "llvm/MC/MCAsmInfo.h" #include "llvm/MC/MCContext.h" -#include "llvm/MC/MCStreamer.h" #include "llvm/MC/MCExpr.h" #include "llvm/MC/MCObjectWriter.h" #include "llvm/MC/MCSymbol.h" #include "llvm/Support/ErrorHandling.h" -#include "llvm/Support/raw_ostream.h" #include "llvm/Support/LEB128.h" -#include "llvm/ADT/SmallString.h" -#include "llvm/ADT/Twine.h" +#include "llvm/Support/raw_ostream.h" #include <cstdlib> using namespace llvm; -MCStreamer::MCStreamer(MCContext &Ctx) - : Context(Ctx), EmitEHFrame(true), EmitDebugFrame(false), - CurrentW64UnwindInfo(0), LastSymbol(0) { - const MCSection *section = NULL; +MCStreamer::MCStreamer(StreamerKind Kind, MCContext &Ctx) + : Kind(Kind), Context(Ctx), EmitEHFrame(true), EmitDebugFrame(false), + CurrentW64UnwindInfo(0), LastSymbol(0), AutoInitSections(false) { + const MCSection *section = 0; SectionStack.push_back(std::make_pair(section, section)); } @@ -33,6 +33,18 @@ MCStreamer::~MCStreamer() { delete W64UnwindInfos[i]; } +void MCStreamer::reset() { + for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i) + delete W64UnwindInfos[i]; + EmitEHFrame = true; + EmitDebugFrame = false; + CurrentW64UnwindInfo = 0; + LastSymbol = 0; + const MCSection *section = 0; + SectionStack.clear(); + SectionStack.push_back(std::make_pair(section, section)); +} + const MCExpr *MCStreamer::BuildSymbolDiff(MCContext &Context, const MCSymbol *A, const MCSymbol *B) { @@ -91,8 +103,8 @@ void MCStreamer::EmitIntValue(uint64_t Value, unsigned Size, /// EmitULEB128Value - Special case of EmitULEB128Value that avoids the /// client having to pass in a MCExpr for constant integers. -void MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned AddrSpace, - unsigned Padding) { +void MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned Padding, + unsigned AddrSpace) { SmallString<128> Tmp; raw_svector_ostream OSE(Tmp); encodeULEB128(Value, OSE, Padding); @@ -145,8 +157,8 @@ void MCStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue, bool MCStreamer::EmitDwarfFileDirective(unsigned FileNo, StringRef Directory, - StringRef Filename) { - return getContext().GetDwarfFile(Directory, Filename, FileNo) == 0; + StringRef Filename, unsigned CUID) { + return getContext().GetDwarfFile(Directory, Filename, FileNo, CUID) == 0; } void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line, @@ -160,7 +172,7 @@ void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line, MCDwarfFrameInfo *MCStreamer::getCurrentFrameInfo() { if (FrameInfos.empty()) - return NULL; + return 0; return &FrameInfos.back(); } @@ -181,6 +193,13 @@ void MCStreamer::EmitLabel(MCSymbol *Symbol) { LastSymbol = Symbol; } +void MCStreamer::EmitDebugLabel(MCSymbol *Symbol) { + assert(!Symbol->isVariable() && "Cannot emit a variable symbol!"); + assert(getCurrentSection() && "Cannot emit before setting section!"); + Symbol->setSection(*getCurrentSection()); + LastSymbol = Symbol; +} + void MCStreamer::EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding) { EnsureValidFrame(); MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); @@ -234,69 +253,58 @@ void MCStreamer::RecordProcEnd(MCDwarfFrameInfo &Frame) { EmitLabel(Frame.End); } -void MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) { +MCSymbol *MCStreamer::EmitCFICommon() { EnsureValidFrame(); - MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); MCSymbol *Label = getContext().CreateTempSymbol(); EmitLabel(Label); - MachineLocation Dest(MachineLocation::VirtualFP); - MachineLocation Source(Register, -Offset); - MCCFIInstruction Instruction(Label, Dest, Source); + return Label; +} + +void MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) { + MCSymbol *Label = EmitCFICommon(); + MCCFIInstruction Instruction = + MCCFIInstruction::createDefCfa(Label, Register, Offset); + MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); CurFrame->Instructions.push_back(Instruction); } void MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) { - EnsureValidFrame(); + MCSymbol *Label = EmitCFICommon(); + MCCFIInstruction Instruction = + MCCFIInstruction::createDefCfaOffset(Label, Offset); MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); - MCSymbol *Label = getContext().CreateTempSymbol(); - EmitLabel(Label); - MachineLocation Dest(MachineLocation::VirtualFP); - MachineLocation Source(MachineLocation::VirtualFP, -Offset); - MCCFIInstruction Instruction(Label, Dest, Source); CurFrame->Instructions.push_back(Instruction); } void MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) { - EnsureValidFrame(); + MCSymbol *Label = EmitCFICommon(); + MCCFIInstruction Instruction = + MCCFIInstruction::createAdjustCfaOffset(Label, Adjustment); MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); - MCSymbol *Label = getContext().CreateTempSymbol(); - EmitLabel(Label); - MachineLocation Dest(MachineLocation::VirtualFP); - MachineLocation Source(MachineLocation::VirtualFP, Adjustment); - MCCFIInstruction Instruction(MCCFIInstruction::RelMove, Label, Dest, Source); CurFrame->Instructions.push_back(Instruction); } void MCStreamer::EmitCFIDefCfaRegister(int64_t Register) { - EnsureValidFrame(); + MCSymbol *Label = EmitCFICommon(); + MCCFIInstruction Instruction = + MCCFIInstruction::createDefCfaRegister(Label, Register); MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); - MCSymbol *Label = getContext().CreateTempSymbol(); - EmitLabel(Label); - MachineLocation Dest(Register); - MachineLocation Source(MachineLocation::VirtualFP); - MCCFIInstruction Instruction(Label, Dest, Source); CurFrame->Instructions.push_back(Instruction); } void MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) { - EnsureValidFrame(); + MCSymbol *Label = EmitCFICommon(); + MCCFIInstruction Instruction = + MCCFIInstruction::createOffset(Label, Register, Offset); MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); - MCSymbol *Label = getContext().CreateTempSymbol(); - EmitLabel(Label); - MachineLocation Dest(Register, Offset); - MachineLocation Source(Register, Offset); - MCCFIInstruction Instruction(Label, Dest, Source); CurFrame->Instructions.push_back(Instruction); } void MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) { - EnsureValidFrame(); + MCSymbol *Label = EmitCFICommon(); + MCCFIInstruction Instruction = + MCCFIInstruction::createRelOffset(Label, Register, Offset); MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); - MCSymbol *Label = getContext().CreateTempSymbol(); - EmitLabel(Label); - MachineLocation Dest(Register, Offset); - MachineLocation Source(Register, Offset); - MCCFIInstruction Instruction(MCCFIInstruction::RelMove, Label, Dest, Source); CurFrame->Instructions.push_back(Instruction); } @@ -316,48 +324,40 @@ void MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) { } void MCStreamer::EmitCFIRememberState() { - EnsureValidFrame(); + MCSymbol *Label = EmitCFICommon(); + MCCFIInstruction Instruction = MCCFIInstruction::createRememberState(Label); MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); - MCSymbol *Label = getContext().CreateTempSymbol(); - EmitLabel(Label); - MCCFIInstruction Instruction(MCCFIInstruction::RememberState, Label); CurFrame->Instructions.push_back(Instruction); } void MCStreamer::EmitCFIRestoreState() { // FIXME: Error if there is no matching cfi_remember_state. - EnsureValidFrame(); + MCSymbol *Label = EmitCFICommon(); + MCCFIInstruction Instruction = MCCFIInstruction::createRestoreState(Label); MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); - MCSymbol *Label = getContext().CreateTempSymbol(); - EmitLabel(Label); - MCCFIInstruction Instruction(MCCFIInstruction::RestoreState, Label); CurFrame->Instructions.push_back(Instruction); } void MCStreamer::EmitCFISameValue(int64_t Register) { - EnsureValidFrame(); + MCSymbol *Label = EmitCFICommon(); + MCCFIInstruction Instruction = + MCCFIInstruction::createSameValue(Label, Register); MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); - MCSymbol *Label = getContext().CreateTempSymbol(); - EmitLabel(Label); - MCCFIInstruction Instruction(MCCFIInstruction::SameValue, Label, Register); CurFrame->Instructions.push_back(Instruction); } void MCStreamer::EmitCFIRestore(int64_t Register) { - EnsureValidFrame(); + MCSymbol *Label = EmitCFICommon(); + MCCFIInstruction Instruction = + MCCFIInstruction::createRestore(Label, Register); MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); - MCSymbol *Label = getContext().CreateTempSymbol(); - EmitLabel(Label); - MCCFIInstruction Instruction(MCCFIInstruction::Restore, Label, Register); CurFrame->Instructions.push_back(Instruction); } void MCStreamer::EmitCFIEscape(StringRef Values) { - EnsureValidFrame(); + MCSymbol *Label = EmitCFICommon(); + MCCFIInstruction Instruction = MCCFIInstruction::createEscape(Label, Values); MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); - MCSymbol *Label = getContext().CreateTempSymbol(); - EmitLabel(Label); - MCCFIInstruction Instruction(MCCFIInstruction::Escape, Label, Values); CurFrame->Instructions.push_back(Instruction); } @@ -367,6 +367,22 @@ void MCStreamer::EmitCFISignalFrame() { CurFrame->IsSignalFrame = true; } +void MCStreamer::EmitCFIUndefined(int64_t Register) { + MCSymbol *Label = EmitCFICommon(); + MCCFIInstruction Instruction = + MCCFIInstruction::createUndefined(Label, Register); + MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); + CurFrame->Instructions.push_back(Instruction); +} + +void MCStreamer::EmitCFIRegister(int64_t Register1, int64_t Register2) { + MCSymbol *Label = EmitCFICommon(); + MCCFIInstruction Instruction = + MCCFIInstruction::createRegister(Label, Register1, Register2); + MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); + CurFrame->Instructions.push_back(Instruction); +} + void MCStreamer::setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame) { W64UnwindInfos.push_back(Frame); CurrentW64UnwindInfo = W64UnwindInfos.back(); @@ -457,7 +473,7 @@ 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, NULL, Register, Offset); + MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, 0, Register, Offset); CurFrame->LastFrameInst = CurFrame->Instructions.size(); CurFrame->Instructions.push_back(Inst); } @@ -604,3 +620,8 @@ void MCStreamer::Finish() { FinishImpl(); } + +MCSymbolData &MCStreamer::getOrCreateSymbolData(MCSymbol *Symbol) { + report_fatal_error("Not supported!"); + return *(static_cast<MCSymbolData*>(0)); +} |
