mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-19 11:02:59 +02:00
ae65e281f3
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
112 lines
3.6 KiB
C++
112 lines
3.6 KiB
C++
//===-- AVRMCInstLower.cpp - Convert AVR MachineInstr to an MCInst --------===//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file contains code to lower AVR MachineInstrs to their corresponding
|
|
// MCInst records.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "AVRMCInstLower.h"
|
|
|
|
#include "AVRInstrInfo.h"
|
|
#include "MCTargetDesc/AVRMCExpr.h"
|
|
|
|
#include "llvm/CodeGen/AsmPrinter.h"
|
|
#include "llvm/IR/Mangler.h"
|
|
#include "llvm/MC/MCInst.h"
|
|
#include "llvm/Support/ErrorHandling.h"
|
|
|
|
namespace llvm {
|
|
|
|
MCOperand AVRMCInstLower::lowerSymbolOperand(const MachineOperand &MO,
|
|
MCSymbol *Sym) const {
|
|
unsigned char TF = MO.getTargetFlags();
|
|
const MCExpr *Expr = MCSymbolRefExpr::create(Sym, Ctx);
|
|
|
|
bool IsNegated = false;
|
|
if (TF & AVRII::MO_NEG) { IsNegated = true; }
|
|
|
|
if (!MO.isJTI() && MO.getOffset()) {
|
|
Expr = MCBinaryExpr::createAdd(
|
|
Expr, MCConstantExpr::create(MO.getOffset(), Ctx), Ctx);
|
|
}
|
|
|
|
bool IsFunction = MO.isGlobal() && isa<Function>(MO.getGlobal());
|
|
|
|
if (TF & AVRII::MO_LO) {
|
|
if (IsFunction) {
|
|
// N.B. Should we use _GS fixups here to cope with >128k progmem?
|
|
Expr = AVRMCExpr::create(AVRMCExpr::VK_AVR_PM_LO8, Expr, IsNegated, Ctx);
|
|
} else {
|
|
Expr = AVRMCExpr::create(AVRMCExpr::VK_AVR_LO8, Expr, IsNegated, Ctx);
|
|
}
|
|
} else if (TF & AVRII::MO_HI) {
|
|
if (IsFunction) {
|
|
// N.B. Should we use _GS fixups here to cope with >128k progmem?
|
|
Expr = AVRMCExpr::create(AVRMCExpr::VK_AVR_PM_HI8, Expr, IsNegated, Ctx);
|
|
} else {
|
|
Expr = AVRMCExpr::create(AVRMCExpr::VK_AVR_HI8, Expr, IsNegated, Ctx);
|
|
}
|
|
} else if (TF != 0) {
|
|
llvm_unreachable("Unknown target flag on symbol operand");
|
|
}
|
|
|
|
return MCOperand::createExpr(Expr);
|
|
}
|
|
|
|
void AVRMCInstLower::lowerInstruction(const MachineInstr &MI, MCInst &OutMI) const {
|
|
OutMI.setOpcode(MI.getOpcode());
|
|
|
|
for (MachineOperand const &MO : MI.operands()) {
|
|
MCOperand MCOp;
|
|
|
|
switch (MO.getType()) {
|
|
default:
|
|
MI.print(errs());
|
|
llvm_unreachable("unknown operand type");
|
|
case MachineOperand::MO_Register:
|
|
// Ignore all implicit register operands.
|
|
if (MO.isImplicit())
|
|
continue;
|
|
MCOp = MCOperand::createReg(MO.getReg());
|
|
break;
|
|
case MachineOperand::MO_Immediate:
|
|
MCOp = MCOperand::createImm(MO.getImm());
|
|
break;
|
|
case MachineOperand::MO_GlobalAddress:
|
|
MCOp = lowerSymbolOperand(MO, Printer.getSymbol(MO.getGlobal()));
|
|
break;
|
|
case MachineOperand::MO_ExternalSymbol:
|
|
MCOp = lowerSymbolOperand(
|
|
MO, Printer.GetExternalSymbolSymbol(MO.getSymbolName()));
|
|
break;
|
|
case MachineOperand::MO_MachineBasicBlock:
|
|
MCOp = MCOperand::createExpr(
|
|
MCSymbolRefExpr::create(MO.getMBB()->getSymbol(), Ctx));
|
|
break;
|
|
case MachineOperand::MO_RegisterMask:
|
|
continue;
|
|
case MachineOperand::MO_BlockAddress:
|
|
MCOp = lowerSymbolOperand(
|
|
MO, Printer.GetBlockAddressSymbol(MO.getBlockAddress()));
|
|
break;
|
|
case MachineOperand::MO_JumpTableIndex:
|
|
MCOp = lowerSymbolOperand(MO, Printer.GetJTISymbol(MO.getIndex()));
|
|
break;
|
|
case MachineOperand::MO_ConstantPoolIndex:
|
|
MCOp = lowerSymbolOperand(MO, Printer.GetCPISymbol(MO.getIndex()));
|
|
break;
|
|
}
|
|
|
|
OutMI.addOperand(MCOp);
|
|
}
|
|
}
|
|
|
|
} // end of namespace llvm
|
|
|