llvm-6502/lib/Target/Mips/MipsAsmPrinter.h
Eric Christopher 3a7a58d6e0 Make the Mips AsmPrinter independent of global subtarget
initialization. Initialize the subtarget once per function and
migrate EmitStartOfAsmFile to either use calls on the
TargetMachine or get information from the subtarget we'd use
for assembling.

The top-level-ness of the MIPS attribute output for assembly is,
by nature, contrary to how we'd want to do this for an LTO
situation where we have multiple cpu architectures so this
solution is good enough for now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229596 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-18 01:01:57 +00:00

152 lines
5.5 KiB
C++

//===-- MipsAsmPrinter.h - Mips LLVM Assembly Printer ----------*- C++ -*--===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// 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 "MipsMachineFunction.h"
#include "MipsSubtarget.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Target/TargetMachine.h"
namespace llvm {
class MCStreamer;
class MachineInstr;
class MachineBasicBlock;
class MipsTargetStreamer;
class Module;
class raw_ostream;
class LLVM_LIBRARY_VISIBILITY MipsAsmPrinter : public AsmPrinter {
MipsTargetStreamer &getTargetStreamer() const;
void EmitInstrWithMacroNoAT(const MachineInstr *MI);
private:
// 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);
/// MCP - Keep a pointer to constantpool entries of the current
/// MachineFunction.
const MachineConstantPool *MCP;
/// InConstantPool - Maintain state when emitting a sequence of constant
/// pool entries so we can properly mark them as data regions.
bool InConstantPool;
std::map<const char *, const llvm::Mips16HardFloatInfo::FuncSignature *>
StubsNeeded;
void emitInlineAsmStart(const MCSubtargetInfo &StartInfo) const override;
void emitInlineAsmEnd(const MCSubtargetInfo &StartInfo,
const MCSubtargetInfo *EndInfo) const override;
void EmitJal(MCSymbol *Symbol);
void EmitInstrReg(unsigned Opcode, unsigned Reg);
void EmitInstrRegReg(unsigned Opcode, unsigned Reg1, unsigned Reg2);
void EmitInstrRegRegReg(unsigned Opcode, unsigned Reg1, unsigned Reg2,
unsigned Reg3);
void EmitMovFPIntPair(unsigned MovOpc, unsigned Reg1, unsigned Reg2,
unsigned FPReg1, unsigned FPReg2, bool LE);
void EmitSwapFPIntParams(Mips16HardFloatInfo::FPParamVariant, bool LE,
bool ToFP);
void EmitSwapFPIntRetval(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;
// We initialize the subtarget here and in runOnMachineFunction
// since there are certain target specific flags (ABI) that could
// reside on the TargetMachine, but are on the subtarget currently
// and we need them for the beginning of file output before we've
// seen a single function.
explicit MipsAsmPrinter(TargetMachine &TM,
std::unique_ptr<MCStreamer> Streamer)
: AsmPrinter(TM, std::move(Streamer)), MCP(nullptr),
InConstantPool(false), MCInstLowering(*this) {}
const char *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;
bool isBlockOnlyReachableByFallthrough(
const MachineBasicBlock* MBB) const override;
bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
unsigned AsmVariant, const char *ExtraCode,
raw_ostream &O) override;
bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNum,
unsigned AsmVariant, const char *ExtraCode,
raw_ostream &O) override;
void printOperand(const MachineInstr *MI, int opNum, raw_ostream &O);
void printUnsignedImm(const MachineInstr *MI, int opNum, raw_ostream &O);
void printUnsignedImm8(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);
};
}
#endif