1 //===-- AVRTargetObjectFile.cpp - AVR Object Files ------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "AVRTargetObjectFile.h"
11
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 #include "llvm/Support/ELF.h"
18
19 #include "AVR.h"
20
21 namespace llvm {
Initialize(MCContext & Ctx,const TargetMachine & TM)22 void AVRTargetObjectFile::Initialize(MCContext &Ctx, const TargetMachine &TM) {
23 Base::Initialize(Ctx, TM);
24 ProgmemDataSection =
25 Ctx.getELFSection(".progmem.data", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
26 }
27
28 MCSection *
SelectSectionForGlobal(const GlobalValue * GV,SectionKind Kind,Mangler & Mang,const TargetMachine & TM) const29 AVRTargetObjectFile::SelectSectionForGlobal(const GlobalValue *GV,
30 SectionKind Kind, Mangler &Mang,
31 const TargetMachine &TM) const {
32 // Global values in flash memory are placed in the progmem.data section
33 // unless they already have a user assigned section.
34 if (AVR::isProgramMemoryAddress(GV) && !GV->hasSection())
35 return ProgmemDataSection;
36
37 // Otherwise, we work the same way as ELF.
38 return Base::SelectSectionForGlobal(GV, Kind, Mang, TM);
39 }
40 } // end of namespace llvm
41