1 //===-- AVRTargetObjectFile.cpp - AVR Object Files ------------------------===//
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 #include "AVRTargetObjectFile.h"
10
11 #include "llvm/BinaryFormat/ELF.h"
12 #include "llvm/IR/DerivedTypes.h"
13 #include "llvm/IR/GlobalValue.h"
14 #include "llvm/IR/Mangler.h"
15 #include "llvm/MC/MCContext.h"
16 #include "llvm/MC/MCSectionELF.h"
17
18 #include "AVR.h"
19
20 namespace llvm {
Initialize(MCContext & Ctx,const TargetMachine & TM)21 void AVRTargetObjectFile::Initialize(MCContext &Ctx, const TargetMachine &TM) {
22 Base::Initialize(Ctx, TM);
23 ProgmemDataSection =
24 Ctx.getELFSection(".progmem.data", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
25 }
26
27 MCSection *
SelectSectionForGlobal(const GlobalObject * GO,SectionKind Kind,const TargetMachine & TM) const28 AVRTargetObjectFile::SelectSectionForGlobal(const GlobalObject *GO,
29 SectionKind Kind,
30 const TargetMachine &TM) const {
31 // Global values in flash memory are placed in the progmem.data section
32 // unless they already have a user assigned section.
33 if (AVR::isProgramMemoryAddress(GO) && !GO->hasSection())
34 return ProgmemDataSection;
35
36 // Otherwise, we work the same way as ELF.
37 return Base::SelectSectionForGlobal(GO, Kind, TM);
38 }
39 } // end of namespace llvm
40
41