1 //===-- M68kELFTargetObjectFile.cpp - M68k Object Files ---------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 /// 9 /// \file 10 /// This file contains definitions for M68k ELF object file lowering. 11 /// 12 //===----------------------------------------------------------------------===// 13 14 #include "M68kTargetObjectFile.h" 15 16 #include "M68kSubtarget.h" 17 #include "M68kTargetMachine.h" 18 19 #include "llvm/BinaryFormat/ELF.h" 20 #include "llvm/IR/DataLayout.h" 21 #include "llvm/IR/DerivedTypes.h" 22 #include "llvm/IR/GlobalVariable.h" 23 #include "llvm/MC/MCContext.h" 24 #include "llvm/MC/MCSectionELF.h" 25 #include "llvm/Support/CommandLine.h" 26 #include "llvm/Target/TargetMachine.h" 27 28 using namespace llvm; 29 30 static cl::opt<unsigned> SSThreshold( 31 "m68k-ssection-threshold", cl::Hidden, 32 cl::desc("Small data and bss section threshold size (default=8)"), 33 cl::init(8)); 34 35 void M68kELFTargetObjectFile::Initialize(MCContext &Ctx, 36 const TargetMachine &TM) { 37 TargetLoweringObjectFileELF::Initialize(Ctx, TM); 38 InitializeELF(TM.Options.UseInitArray); 39 40 this->TM = &static_cast<const M68kTargetMachine &>(TM); 41 42 // FIXME do we need `.sdata` and `.sbss` explicitly? 43 SmallDataSection = getContext().getELFSection( 44 ".sdata", ELF::SHT_PROGBITS, ELF::SHF_WRITE | ELF::SHF_ALLOC); 45 46 SmallBSSSection = getContext().getELFSection(".sbss", ELF::SHT_NOBITS, 47 ELF::SHF_WRITE | ELF::SHF_ALLOC); 48 } 49