#ifndef LLVM_LIB_TARGET_X86_X86ASMPRINTER_H
#define LLVM_LIB_TARGET_X86_X86ASMPRINTER_H
#include "X86Subtarget.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/StackMaps.h"
#include "llvm/Target/TargetMachine.h"
namespace {
class X86MCInstLower;
}
namespace llvm {
class MCStreamer;
class MCSymbol;
class LLVM_LIBRARY_VISIBILITY X86AsmPrinter : public AsmPrinter {
const X86Subtarget *Subtarget;
StackMaps SM;
void GenerateExportDirective(const MCSymbol *Sym, bool IsData);
class StackMapShadowTracker {
public:
StackMapShadowTracker(TargetMachine &TM);
~StackMapShadowTracker();
void startFunction(MachineFunction &MF);
void count(MCInst &Inst, const MCSubtargetInfo &STI);
void reset(unsigned RequiredSize) {
RequiredShadowSize = RequiredSize;
CurrentShadowSize = 0;
InShadow = true;
}
void emitShadowPadding(MCStreamer &OutStreamer, const MCSubtargetInfo &STI);
private:
TargetMachine &TM;
const MachineFunction *MF;
std::unique_ptr<MCCodeEmitter> CodeEmitter;
bool InShadow;
unsigned RequiredShadowSize, CurrentShadowSize;
};
StackMapShadowTracker SMShadowTracker;
void EmitAndCountInstruction(MCInst &Inst);
void InsertStackMapShadows(MachineFunction &MF);
void LowerSTACKMAP(const MachineInstr &MI);
void LowerPATCHPOINT(const MachineInstr &MI);
void LowerTlsAddr(X86MCInstLower &MCInstLowering, const MachineInstr &MI);
public:
explicit X86AsmPrinter(TargetMachine &TM,
std::unique_ptr<MCStreamer> Streamer)
: AsmPrinter(TM, std::move(Streamer)), SM(*this), SMShadowTracker(TM) {}
const char *getPassName() const override {
return "X86 Assembly / Object Emitter";
}
const X86Subtarget &getSubtarget() const { return *Subtarget; }
void EmitStartOfAsmFile(Module &M) override;
void EmitEndOfAsmFile(Module &M) override;
void EmitInstruction(const MachineInstr *MI) override;
void EmitBasicBlockEnd(const MachineBasicBlock &MBB) override {
SMShadowTracker.emitShadowPadding(OutStreamer, getSubtargetInfo());
}
bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
unsigned AsmVariant, const char *ExtraCode,
raw_ostream &OS) override;
bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
unsigned AsmVariant, const char *ExtraCode,
raw_ostream &OS) override;
MCSymbol *GetCPISymbol(unsigned CPID) const override;
bool doInitialization(Module &M) override {
SMShadowTracker.reset(0);
SM.reset();
return AsmPrinter::doInitialization(M);
}
bool runOnMachineFunction(MachineFunction &F) override;
};
}
#endif