path: root/lib/Target/ARM/ARMAsmPrinter.cpp

//===-- ARMAsmPrinter.cpp - Print machine code to an ARM .s file ----------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains a printer that converts from our internal representation
// of machine-dependent LLVM code to GAS-format ARM assembly language.
//
//===----------------------------------------------------------------------===//

#define DEBUG_TYPE "asm-printer"
#include "ARM.h"
#include "ARMBuildAttrs.h"
#include "ARMAddressingModes.h"
#include "ARMConstantPoolValue.h"
#include "InstPrinter/ARMInstPrinter.h"
#include "ARMMachineFunctionInfo.h"
#include "ARMMCInstLower.h"
#include "ARMTargetMachine.h"
#include "llvm/Analysis/DebugInfo.h"
#include "llvm/Constants.h"
#include "llvm/Module.h"
#include "llvm/Type.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/MachineModuleInfoImpls.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineJumpTableInfo.h"
#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Target/Mangler.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Target/TargetRegistry.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include <cctype>
using namespace llvm;

namespace llvm {
  namespace ARM {
    enum DW_ISA {
      DW_ISA_ARM_thumb = 1,
      DW_ISA_ARM_arm = 2
    };
  }
}

namespace {
  class ARMAsmPrinter : public AsmPrinter {

    /// Subtarget - Keep a pointer to the ARMSubtarget around so that we can
    /// make the right decision when printing asm code for different targets.
    const ARMSubtarget *Subtarget;

    /// AFI - Keep a pointer to ARMFunctionInfo for the current
    /// MachineFunction.
    ARMFunctionInfo *AFI;

    /// MCP - Keep a pointer to constantpool entries of the current
    /// MachineFunction.
    const MachineConstantPool *MCP;

  public:
    explicit ARMAsmPrinter(TargetMachine &TM, MCStreamer &Streamer)
      : AsmPrinter(TM, Streamer), AFI(NULL), MCP(NULL) {
      Subtarget = &TM.getSubtarget<ARMSubtarget>();
    }

    virtual const char *getPassName() const {
      return "ARM Assembly Printer";
    }

    void printOperand(const MachineInstr *MI, int OpNum, raw_ostream &O,
                      const char *Modifier = 0);

    virtual bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNum,
                                 unsigned AsmVariant, const char *ExtraCode,
                                 raw_ostream &O);
    virtual bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNum,
                                       unsigned AsmVariant,