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(Val: 8)); |
34 | |
35 | void M68kELFTargetObjectFile::Initialize(MCContext &Ctx, |
36 | const TargetMachine &TM) { |
37 | TargetLoweringObjectFileELF::Initialize(Ctx, TM); |
38 | InitializeELF(UseInitArray_: 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 | Section: ".sdata" , Type: ELF::SHT_PROGBITS, Flags: ELF::SHF_WRITE | ELF::SHF_ALLOC); |
45 | |
46 | SmallBSSSection = getContext().getELFSection(Section: ".sbss" , Type: ELF::SHT_NOBITS, |
47 | Flags: ELF::SHF_WRITE | ELF::SHF_ALLOC); |
48 | } |
49 | |