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//===- MipsAsmPrinter.h - Mips LLVM Assembly Printer -----------*- C++ -*--===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Mips Assembly printer class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_MIPS_MIPSASMPRINTER_H
#define LLVM_LIB_TARGET_MIPS_MIPSASMPRINTER_H
#include "Mips16HardFloatInfo.h"
#include "MipsMCInstLower.h"
#include "MipsSubtarget.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/Support/Compiler.h"
#include <algorithm>
#include <map>
#include <memory>
namespace llvm {
class MCOperand;
class MCSubtargetInfo;
class MCSymbol;
class MachineBasicBlock;
class MachineConstantPool;
class MachineFunction;
class MachineInstr;
class MachineOperand;
class MipsFunctionInfo;
class MipsTargetStreamer;
class Module;
class raw_ostream;
class TargetMachine;
class LLVM_LIBRARY_VISIBILITY MipsAsmPrinter : public AsmPrinter {
MipsTargetStreamer &getTargetStreamer() const;
void EmitInstrWithMacroNoAT(const MachineInstr *MI);
//===------------------------------------------------------------------===//
// XRay implementation
//===------------------------------------------------------------------===//
public:
// XRay-specific lowering for Mips.
void LowerPATCHABLE_FUNCTION_ENTER(const MachineInstr &MI);
void LowerPATCHABLE_FUNCTION_EXIT(const MachineInstr &MI);
void LowerPATCHABLE_TAIL_CALL(const MachineInstr &MI);
private:
/// MCP - Keep a pointer to constantpool entries of the current
/// MachineFunction.
const MachineConstantPool *MCP = nullptr;
/// InConstantPool - Maintain state when emitting a sequence of constant
/// pool entries so we can properly mark them as data regions.
bool InConstantPool = false;
std::map<const char *, const Mips16HardFloatInfo::FuncSignature *>
StubsNeeded;
void EmitSled(const MachineInstr &MI, SledKind Kind);
// tblgen'erated function.
bool emitPseudoExpansionLowering(MCStreamer &OutStreamer,
const MachineInstr *MI);
// Emit PseudoReturn, PseudoReturn64, PseudoIndirectBranch,
// and PseudoIndirectBranch64 as a JR, JR_MM, JALR, or JALR64 as appropriate
// for the target.
void emitPseudoIndirectBranch(MCStreamer &OutStreamer,
const MachineInstr *MI);
// lowerOperand - Convert a MachineOperand into the equivalent MCOperand.
bool lowerOperand(const MachineOperand &MO, MCOperand &MCOp);
void emitInlineAsmStart() const override;
void emitInlineAsmEnd(const MCSubtargetInfo &StartInfo,
const MCSubtargetInfo *EndInfo) const override;
void EmitJal(const MCSubtargetInfo &STI, MCSymbol *Symbol);
void EmitInstrReg(const MCSubtargetInfo &STI, unsigned Opcode, unsigned Reg);
void EmitInstrRegReg(const MCSubtargetInfo &STI, unsigned Opcode,
unsigned Reg1, unsigned Reg2);
void EmitInstrRegRegReg(const MCSubtargetInfo &STI, unsigned Opcode,
unsigned Reg1, unsigned Reg2, unsigned Reg3);
void EmitMovFPIntPair(const MCSubtargetInfo &STI, unsigned MovOpc,
unsigned Reg1, unsigned Reg2, unsigned FPReg1,
unsigned FPReg2, bool LE);
void EmitSwapFPIntParams(const MCSubtargetInfo &STI,
Mips16HardFloatInfo::FPParamVariant, bool LE,
bool ToFP);
void EmitSwapFPIntRetval(const MCSubtargetInfo &STI,
Mips16HardFloatInfo::FPReturnVariant, bool LE);
void EmitFPCallStub(const char *, const Mips16HardFloatInfo::FuncSignature *);
void NaClAlignIndirectJumpTargets(MachineFunction &MF);
bool isLongBranchPseudo(int Opcode) const;
public:
const MipsSubtarget *Subtarget;
const MipsFunctionInfo *MipsFI;
MipsMCInstLower MCInstLowering;
explicit MipsAsmPrinter(TargetMachine &TM,
std::unique_ptr<MCStreamer> Streamer)
: AsmPrinter(TM, std::move(Streamer)), MCInstLowering(*this) {}
StringRef getPassName() const override { return "Mips Assembly Printer"; }
bool runOnMachineFunction(MachineFunction &MF) override;
void emitConstantPool() override {
bool UsingConstantPools =
(Subtarget->inMips16Mode() && Subtarget->useConstantIslands());
if (!UsingConstantPools)
AsmPrinter::emitConstantPool();
// we emit constant pools customly!
}
void emitInstruction(const MachineInstr *MI) override;
void printSavedRegsBitmask();
void emitFrameDirective();
const char *getCurrentABIString() const;
void emitFunctionEntryLabel() override;
void emitFunctionBodyStart() override;
void emitFunctionBodyEnd() override;
void emitBasicBlockEnd(const MachineBasicBlock &MBB) override;
bool isBlockOnlyReachableByFallthrough(
const MachineBasicBlock* MBB) const override;
bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
const char *ExtraCode, raw_ostream &O) override;
bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNum,
const char *ExtraCode, raw_ostream &O) override;
void printOperand(const MachineInstr *MI, int opNum, raw_ostream &O);
void printMemOperand(const MachineInstr *MI, int opNum, raw_ostream &O);
void printMemOperandEA(const MachineInstr *MI, int opNum, raw_ostream &O);
void printFCCOperand(const MachineInstr *MI, int opNum, raw_ostream &O,
const char *Modifier = nullptr);
void printRegisterList(const MachineInstr *MI, int opNum, raw_ostream &O);
void emitStartOfAsmFile(Module &M) override;
void emitEndOfAsmFile(Module &M) override;
void PrintDebugValueComment(const MachineInstr *MI, raw_ostream &OS);
void emitDebugValue(const MCExpr *Value, unsigned Size) const override;
};
} // end namespace llvm
#endif // LLVM_LIB_TARGET_MIPS_MIPSASMPRINTER_H
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