llvm-6502/lib/Target/Sparc/SparcMCInstLower.cpp
2013-12-26 01:49:59 +00:00

142 lines
5.4 KiB
C++

//===-- SparcMCInstLower.cpp - Convert Sparc MachineInstr to MCInst -------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains code to lower Sparc MachineInstrs to their corresponding
// MCInst records.
//
//===----------------------------------------------------------------------===//
#include "Sparc.h"
#include "MCTargetDesc/SparcBaseInfo.h"
#include "MCTargetDesc/SparcMCExpr.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
#include "llvm/Target/Mangler.h"
#include "llvm/ADT/SmallString.h"
using namespace llvm;
static MCOperand LowerSymbolOperand(const MachineInstr *MI,
const MachineOperand &MO,
AsmPrinter &AP) {
SparcMCExpr::VariantKind Kind;
const MCSymbol *Symbol = 0;
unsigned TF = MO.getTargetFlags();
switch(TF) {
default: llvm_unreachable("Unknown target flags on operand");
case SPII::MO_NO_FLAG: Kind = SparcMCExpr::VK_Sparc_None; break;
case SPII::MO_LO: Kind = SparcMCExpr::VK_Sparc_LO; break;
case SPII::MO_HI: Kind = SparcMCExpr::VK_Sparc_HI; break;
case SPII::MO_H44: Kind = SparcMCExpr::VK_Sparc_H44; break;
case SPII::MO_M44: Kind = SparcMCExpr::VK_Sparc_M44; break;
case SPII::MO_L44: Kind = SparcMCExpr::VK_Sparc_L44; break;
case SPII::MO_HH: Kind = SparcMCExpr::VK_Sparc_HH; break;
case SPII::MO_HM: Kind = SparcMCExpr::VK_Sparc_HM; break;
case SPII::MO_TLS_GD_HI22: Kind = SparcMCExpr::VK_Sparc_TLS_GD_HI22; break;
case SPII::MO_TLS_GD_LO10: Kind = SparcMCExpr::VK_Sparc_TLS_GD_LO10; break;
case SPII::MO_TLS_GD_ADD: Kind = SparcMCExpr::VK_Sparc_TLS_GD_ADD; break;
case SPII::MO_TLS_GD_CALL: Kind = SparcMCExpr::VK_Sparc_TLS_GD_CALL; break;
case SPII::MO_TLS_LDM_HI22: Kind = SparcMCExpr::VK_Sparc_TLS_LDM_HI22; break;
case SPII::MO_TLS_LDM_LO10: Kind = SparcMCExpr::VK_Sparc_TLS_LDM_LO10; break;
case SPII::MO_TLS_LDM_ADD: Kind = SparcMCExpr::VK_Sparc_TLS_LDM_ADD; break;
case SPII::MO_TLS_LDM_CALL: Kind = SparcMCExpr::VK_Sparc_TLS_LDM_CALL; break;
case SPII::MO_TLS_LDO_HIX22:Kind = SparcMCExpr::VK_Sparc_TLS_LDO_HIX22; break;
case SPII::MO_TLS_LDO_LOX10:Kind = SparcMCExpr::VK_Sparc_TLS_LDO_LOX10; break;
case SPII::MO_TLS_LDO_ADD: Kind = SparcMCExpr::VK_Sparc_TLS_LDO_ADD; break;
case SPII::MO_TLS_IE_HI22: Kind = SparcMCExpr::VK_Sparc_TLS_IE_HI22; break;
case SPII::MO_TLS_IE_LO10: Kind = SparcMCExpr::VK_Sparc_TLS_IE_LO10; break;
case SPII::MO_TLS_IE_LD: Kind = SparcMCExpr::VK_Sparc_TLS_IE_LD; break;
case SPII::MO_TLS_IE_LDX: Kind = SparcMCExpr::VK_Sparc_TLS_IE_LDX; break;
case SPII::MO_TLS_IE_ADD: Kind = SparcMCExpr::VK_Sparc_TLS_IE_ADD; break;
case SPII::MO_TLS_LE_HIX22: Kind = SparcMCExpr::VK_Sparc_TLS_LE_HIX22; break;
case SPII::MO_TLS_LE_LOX10: Kind = SparcMCExpr::VK_Sparc_TLS_LE_LOX10; break;
}
switch(MO.getType()) {
default: llvm_unreachable("Unknown type in LowerSymbolOperand");
case MachineOperand::MO_MachineBasicBlock:
Symbol = MO.getMBB()->getSymbol();
break;
case MachineOperand::MO_GlobalAddress:
Symbol = AP.getSymbol(MO.getGlobal());
break;
case MachineOperand::MO_BlockAddress:
Symbol = AP.GetBlockAddressSymbol(MO.getBlockAddress());
break;
case MachineOperand::MO_ExternalSymbol:
Symbol = AP.GetExternalSymbolSymbol(MO.getSymbolName());
break;
case MachineOperand::MO_ConstantPoolIndex:
Symbol = AP.GetCPISymbol(MO.getIndex());
break;
}
const MCSymbolRefExpr *MCSym = MCSymbolRefExpr::Create(Symbol,
AP.OutContext);
const SparcMCExpr *expr = SparcMCExpr::Create(Kind, MCSym,
AP.OutContext);
return MCOperand::CreateExpr(expr);
}
static MCOperand LowerOperand(const MachineInstr *MI,
const MachineOperand &MO,
AsmPrinter &AP) {
switch(MO.getType()) {
default: llvm_unreachable("unknown operand type"); break;
case MachineOperand::MO_Register:
if (MO.isImplicit())
break;
return MCOperand::CreateReg(MO.getReg());
case MachineOperand::MO_Immediate:
return MCOperand::CreateImm(MO.getImm());
case MachineOperand::MO_MachineBasicBlock:
case MachineOperand::MO_GlobalAddress:
case MachineOperand::MO_BlockAddress:
case MachineOperand::MO_ExternalSymbol:
case MachineOperand::MO_ConstantPoolIndex:
return LowerSymbolOperand(MI, MO, AP);
case MachineOperand::MO_RegisterMask: break;
}
return MCOperand();
}
void llvm::LowerSparcMachineInstrToMCInst(const MachineInstr *MI,
MCInst &OutMI,
AsmPrinter &AP)
{
OutMI.setOpcode(MI->getOpcode());
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
const MachineOperand &MO = MI->getOperand(i);
MCOperand MCOp = LowerOperand(MI, MO, AP);
if (MCOp.isValid())
OutMI.addOperand(MCOp);
}
}