//
//===----------------------------------------------------------------------===//
+#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/LEB128.h"
#include "llvm/Support/raw_ostream.h"
-#include "llvm/ADT/SmallString.h"
-#include "llvm/ADT/Twine.h"
#include <cstdlib>
using namespace llvm;
-MCStreamer::MCStreamer(MCContext &Ctx) : Context(Ctx), EmitEHFrame(true),
- EmitDebugFrame(false),
- CurrentW64UnwindInfo(0),
- LastSymbol(0),
- UniqueCodeBeginSuffix(0),
- UniqueDataBeginSuffix(0) {
+MCStreamer::MCStreamer(StreamerKind Kind, MCContext &Ctx)
+ : Kind(Kind), Context(Ctx), EmitEHFrame(true), EmitDebugFrame(false),
+ CurrentW64UnwindInfo(0), LastSymbol(0), AutoInitSections(false) {
const MCSection *section = NULL;
SectionStack.push_back(std::make_pair(section, section));
}
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 = NULL;
+ SectionStack.clear();
+ SectionStack.push_back(std::make_pair(section, section));
+}
+
const MCExpr *MCStreamer::BuildSymbolDiff(MCContext &Context,
const MCSymbol *A,
const MCSymbol *B) {
/// 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) {
- SmallString<32> Tmp;
+void MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned Padding,
+ unsigned AddrSpace) {
+ SmallString<128> Tmp;
raw_svector_ostream OSE(Tmp);
- MCObjectWriter::EncodeULEB128(Value, OSE, Padding);
+ encodeULEB128(Value, OSE, Padding);
EmitBytes(OSE.str(), AddrSpace);
}
/// EmitSLEB128Value - Special case of EmitSLEB128Value that avoids the
/// client having to pass in a MCExpr for constant integers.
void MCStreamer::EmitSLEB128IntValue(int64_t Value, unsigned AddrSpace) {
- SmallString<32> Tmp;
+ SmallString<128> Tmp;
raw_svector_ostream OSE(Tmp);
- MCObjectWriter::EncodeSLEB128(Value, OSE);
+ encodeSLEB128(Value, OSE);
EmitBytes(OSE.str(), AddrSpace);
}
AddrSpace);
}
+void MCStreamer::EmitGPRel64Value(const MCExpr *Value) {
+ report_fatal_error("unsupported directive in streamer");
+}
+
void MCStreamer::EmitGPRel32Value(const MCExpr *Value) {
report_fatal_error("unsupported directive in streamer");
}
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,
LastSymbol = Symbol;
}
-void MCStreamer::EmitDataRegion() {
- if (RegionIndicator == Data) return;
-
- MCContext &Context = getContext();
- const MCAsmInfo &MAI = Context.getAsmInfo();
- if (!MAI.getSupportsDataRegions()) return;
-
- // Generate a unique symbol name.
- MCSymbol *NewSym = Context.GetOrCreateSymbol(MAI.getDataBeginLabelName() +
- Twine(UniqueDataBeginSuffix++));
- EmitLabel(NewSym);
-
- RegionIndicator = Data;
-}
-
-void MCStreamer::EmitCodeRegion() {
- if (RegionIndicator == Code) return;
-
- MCContext &Context = getContext();
- const MCAsmInfo &MAI = Context.getAsmInfo();
- if (!MAI.getSupportsDataRegions()) return;
-
- // Generate a unique symbol name.
- MCSymbol *NewSym = Context.GetOrCreateSymbol(MAI.getCodeBeginLabelName() +
- Twine(UniqueCodeBeginSuffix++));
- EmitLabel(NewSym);
-
- RegionIndicator = Code;
-}
-
-void MCStreamer::EmitJumpTable8Region() {
- if (RegionIndicator == JumpTable8) return;
-
- MCContext &Context = getContext();
- const MCAsmInfo &MAI = Context.getAsmInfo();
- if (!MAI.getSupportsDataRegions()) return;
-
- // Generate a unique symbol name.
- MCSymbol *NewSym =
- Context.GetOrCreateSymbol(MAI.getJumpTable8BeginLabelName() +
- Twine(UniqueDataBeginSuffix++));
- EmitLabel(NewSym);
-
- RegionIndicator = JumpTable8;
-}
-
-void MCStreamer::EmitJumpTable16Region() {
- if (RegionIndicator == JumpTable16) return;
-
- MCContext &Context = getContext();
- const MCAsmInfo &MAI = Context.getAsmInfo();
- if (!MAI.getSupportsDataRegions()) return;
-
- // Generate a unique symbol name.
- MCSymbol *NewSym =
- Context.GetOrCreateSymbol(MAI.getJumpTable16BeginLabelName() +
- Twine(UniqueDataBeginSuffix++));
- EmitLabel(NewSym);
-
- RegionIndicator = JumpTable16;
-}
-
-
-void MCStreamer::EmitJumpTable32Region() {
- if (RegionIndicator == JumpTable32) return;
-
- MCContext &Context = getContext();
- const MCAsmInfo &MAI = Context.getAsmInfo();
- if (!MAI.getSupportsDataRegions()) return;
-
- // Generate a unique symbol name.
- MCSymbol *NewSym =
- Context.GetOrCreateSymbol(MAI.getJumpTable32BeginLabelName() +
- Twine(UniqueDataBeginSuffix++));
- EmitLabel(NewSym);
-
- RegionIndicator = JumpTable32;
+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) {
EmitCFIStartProcImpl(Frame);
FrameInfos.push_back(Frame);
- RegionIndicator = Code;
}
void MCStreamer::EmitCFIStartProcImpl(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);
}
}
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);
}
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();
}
void MCStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
- assert(0 && "This file format doesn't support this directive");
+ llvm_unreachable("This file format doesn't support this directive");
}
void MCStreamer::EmitFnStart() {
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.
FinishImpl();
}
+
+MCSymbolData &MCStreamer::getOrCreateSymbolData(MCSymbol *Symbol) {
+ report_fatal_error("Not supported!");
+ return *(static_cast<MCSymbolData*> (NULL));
+}