1 //===-- XCoreTargetObjectFile.cpp - XCore 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 "XCoreTargetObjectFile.h" 11 #include "XCoreSubtarget.h" 12 #include "llvm/MC/MCContext.h" 13 #include "llvm/MC/MCSectionELF.h" 14 #include "llvm/Support/ELF.h" 15 #include "llvm/Target/TargetMachine.h" 16 using namespace llvm; 17 18 19 void XCoreTargetObjectFile::Initialize(MCContext &Ctx, const TargetMachine &TM){ 20 TargetLoweringObjectFileELF::Initialize(Ctx, TM); 21 22 DataSection = 23 Ctx.getELFSection(".dp.data", ELF::SHT_PROGBITS, 24 ELF::SHF_ALLOC | ELF::SHF_WRITE | 25 ELF::XCORE_SHF_DP_SECTION, 26 SectionKind::getDataRel()); 27 BSSSection = 28 Ctx.getELFSection(".dp.bss", ELF::SHT_NOBITS, 29 ELF::SHF_ALLOC | ELF::SHF_WRITE | 30 ELF::XCORE_SHF_DP_SECTION, 31 SectionKind::getBSS()); 32 33 MergeableConst4Section = 34 Ctx.getELFSection(".cp.rodata.cst4", ELF::SHT_PROGBITS, 35 ELF::SHF_ALLOC | ELF::SHF_MERGE | 36 ELF::XCORE_SHF_CP_SECTION, 37 SectionKind::getMergeableConst4()); 38 MergeableConst8Section = 39 Ctx.getELFSection(".cp.rodata.cst8", ELF::SHT_PROGBITS, 40 ELF::SHF_ALLOC | ELF::SHF_MERGE | 41 ELF::XCORE_SHF_CP_SECTION, 42 SectionKind::getMergeableConst8()); 43 MergeableConst16Section = 44 Ctx.getELFSection(".cp.rodata.cst16", ELF::SHT_PROGBITS, 45 ELF::SHF_ALLOC | ELF::SHF_MERGE | 46 ELF::XCORE_SHF_CP_SECTION, 47 SectionKind::getMergeableConst16()); 48 49 // TLS globals are lowered in the backend to arrays indexed by the current 50 // thread id. After lowering they require no special handling by the linker 51 // and can be placed in the standard data / bss sections. 52 TLSDataSection = DataSection; 53 TLSBSSSection = BSSSection; 54 55 ReadOnlySection = 56 Ctx.getELFSection(".cp.rodata", ELF::SHT_PROGBITS, 57 ELF::SHF_ALLOC | 58 ELF::XCORE_SHF_CP_SECTION, 59 SectionKind::getReadOnlyWithRel()); 60 61 // Dynamic linking is not supported. Data with relocations is placed in the 62 // same section as data without relocations. 63 DataRelSection = DataRelLocalSection = DataSection; 64 DataRelROSection = DataRelROLocalSection = ReadOnlySection; 65 } 66
