#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/ADT/SmallString.h"
#include <cstdlib>
using namespace llvm;
-MCStreamer::MCStreamer(MCContext &Ctx) : Context(Ctx), CurSection(0),
- PrevSection(0) {
+MCStreamer::MCStreamer(MCContext &Ctx) : Context(Ctx) {
+ const MCSection *section = NULL;
+ SectionStack.push_back(std::make_pair(section, section));
}
MCStreamer::~MCStreamer() {
void MCStreamer::EmitIntValue(uint64_t Value, unsigned Size,
unsigned AddrSpace) {
assert(Size <= 8 && "Invalid size");
- assert(!(Size == 1 && (signed)Value > 255) && "Invalid size");
+ assert((isUIntN(8 * Size, Value) || isIntN(8 * Size, Value)) &&
+ "Invalid size");
char buf[8];
// FIXME: Endianness assumption.
for (unsigned i = 0; i != Size; ++i)
void MCStreamer::EmitAbsValue(const MCExpr *Value, unsigned Size,
unsigned AddrSpace) {
- if (!getContext().getAsmInfo().needsSetToChangeDiffSize()) {
+ if (getContext().getAsmInfo().hasAggressiveSymbolFolding()) {
EmitValue(Value, Size, AddrSpace);
return;
}
EmitSymbolValue(ABS, Size, AddrSpace);
}
+
+void MCStreamer::EmitValue(const MCExpr *Value, unsigned Size,
+ unsigned AddrSpace) {
+ EmitValueImpl(Value, Size, false, AddrSpace);
+}
+
+void MCStreamer::EmitPCRelValue(const MCExpr *Value, unsigned Size,
+ unsigned AddrSpace) {
+ EmitValueImpl(Value, Size, true, AddrSpace);
+}
+
+void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size,
+ bool isPCRel, unsigned AddrSpace) {
+ EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size, isPCRel,
+ AddrSpace);
+}
+
void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size,
unsigned AddrSpace) {
- EmitValue(MCSymbolRefExpr::Create(Sym, getContext()), Size, AddrSpace);
+ EmitSymbolValue(Sym, Size, false, AddrSpace);
+}
+
+void MCStreamer::EmitPCRelSymbolValue(const MCSymbol *Sym, unsigned Size,
+ unsigned AddrSpace) {
+ EmitSymbolValue(Sym, Size, true, AddrSpace);
}
void MCStreamer::EmitGPRel32Value(const MCExpr *Value) {
void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
unsigned Column, unsigned Flags,
unsigned Isa,
- unsigned Discriminator) {
+ unsigned Discriminator,
+ StringRef FileName) {
getContext().setCurrentDwarfLoc(FileNo, Line, Column, Flags, Isa,
Discriminator);
}
-bool MCStreamer::EmitCFIStartProc() {
- return false;
+MCDwarfFrameInfo *MCStreamer::getCurrentFrameInfo() {
+ if (FrameInfos.empty())
+ return NULL;
+ return &FrameInfos.back();
+}
+
+void MCStreamer::EnsureValidFrame() {
+ MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
+ if (!CurFrame || CurFrame->End)
+ report_fatal_error("No open frame");
+}
+
+void MCStreamer::EmitEHSymAttributes(const MCSymbol *Symbol,
+ MCSymbol *EHSymbol) {
}
-bool MCStreamer::EmitCFIEndProc() {
- return false;
+void MCStreamer::EmitLabel(MCSymbol *Symbol) {
+ assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
+ assert(getCurrentSection() && "Cannot emit before setting section!");
+ Symbol->setSection(*getCurrentSection());
+
+ StringRef Prefix = getContext().getAsmInfo().getPrivateGlobalPrefix();
+ if (!Symbol->getName().startswith(Prefix))
+ LastNonPrivate = Symbol;
+}
+
+void MCStreamer::EmitCFIStartProc() {
+ MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
+ if (CurFrame && !CurFrame->End)
+ report_fatal_error("Starting a frame before finishing the previous one!");
+ MCDwarfFrameInfo Frame;
+ Frame.Begin = getContext().CreateTempSymbol();
+ Frame.Function = LastNonPrivate;
+ EmitLabel(Frame.Begin);
+ FrameInfos.push_back(Frame);
+}
+
+void MCStreamer::EmitCFIEndProc() {
+ EnsureValidFrame();
+ MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
+ CurFrame->End = getContext().CreateTempSymbol();
+ EmitLabel(CurFrame->End);
+}
+
+void MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) {
+ EnsureValidFrame();
+ MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
+ MCSymbol *Label = getContext().CreateTempSymbol();
+ EmitLabel(Label);
+ MachineLocation Dest(MachineLocation::VirtualFP);
+ MachineLocation Source(Register, -Offset);
+ MCCFIInstruction Instruction(Label, Dest, Source);
+ CurFrame->Instructions.push_back(Instruction);
}
-bool MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
- return false;
+void MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
+ EnsureValidFrame();
+ 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);
}
-bool MCStreamer::EmitCFIDefCfaRegister(int64_t Register) {
- return false;
+void MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) {
+ EnsureValidFrame();
+ 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);
}
-bool MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
- return false;
+void MCStreamer::EmitCFIDefCfaRegister(int64_t Register) {
+ EnsureValidFrame();
+ 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);
}
-bool MCStreamer::EmitCFIPersonality(const MCSymbol *Sym) {
- return false;
+void MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
+ EnsureValidFrame();
+ 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);
}
-bool MCStreamer::EmitCFILsda(const MCSymbol *Sym) {
- return false;
+void MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) {
+ EnsureValidFrame();
+ 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::EmitCFIPersonality(const MCSymbol *Sym,
+ unsigned Encoding) {
+ EnsureValidFrame();
+ MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
+ CurFrame->Personality = Sym;
+ CurFrame->PersonalityEncoding = Encoding;
+}
+
+void MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) {
+ EnsureValidFrame();
+ MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
+ CurFrame->Lsda = Sym;
+ CurFrame->LsdaEncoding = Encoding;
+}
+
+void MCStreamer::EmitCFIRememberState() {
+ EnsureValidFrame();
+ MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
+ MCSymbol *Label = getContext().CreateTempSymbol();
+ EmitLabel(Label);
+ MCCFIInstruction Instruction(MCCFIInstruction::Remember, Label);
+ CurFrame->Instructions.push_back(Instruction);
+}
+
+void MCStreamer::EmitCFIRestoreState() {
+ // FIXME: Error if there is no matching cfi_remember_state.
+ EnsureValidFrame();
+ MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
+ MCSymbol *Label = getContext().CreateTempSymbol();
+ EmitLabel(Label);
+ MCCFIInstruction Instruction(MCCFIInstruction::Restore, Label);
+ CurFrame->Instructions.push_back(Instruction);
+}
+
+void MCStreamer::EmitCFISameValue(int64_t Register) {
+ EnsureValidFrame();
+ MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
+ MCSymbol *Label = getContext().CreateTempSymbol();
+ EmitLabel(Label);
+ MCCFIInstruction Instruction(MCCFIInstruction::SameValue, Label, Register);
+ CurFrame->Instructions.push_back(Instruction);
+}
+
+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();
}
/// EmitRawText - If this file is backed by an assembly streamer, this dumps
projects / oota-llvm.git / blobdiff