1 //===-- MCAsmBackend.cpp - Target MC Assembly Backend ----------------------==// 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 "llvm/MC/MCAsmBackend.h" 11 #include "llvm/ADT/STLExtras.h" 12 #include "llvm/MC/MCFixupKindInfo.h" 13 using namespace llvm; 14 15 MCAsmBackend::MCAsmBackend() {} 16 17 MCAsmBackend::~MCAsmBackend() {} 18 19 Optional<MCFixupKind> MCAsmBackend::getFixupKind(StringRef Name) const { 20 return None; 21 } 22 23 const MCFixupKindInfo &MCAsmBackend::getFixupKindInfo(MCFixupKind Kind) const { 24 static const MCFixupKindInfo Builtins[] = { 25 {"FK_Data_1", 0, 8, 0}, 26 {"FK_Data_2", 0, 16, 0}, 27 {"FK_Data_4", 0, 32, 0}, 28 {"FK_Data_8", 0, 64, 0}, 29 {"FK_PCRel_1", 0, 8, MCFixupKindInfo::FKF_IsPCRel}, 30 {"FK_PCRel_2", 0, 16, MCFixupKindInfo::FKF_IsPCRel}, 31 {"FK_PCRel_4", 0, 32, MCFixupKindInfo::FKF_IsPCRel}, 32 {"FK_PCRel_8", 0, 64, MCFixupKindInfo::FKF_IsPCRel}, 33 {"FK_GPRel_1", 0, 8, 0}, 34 {"FK_GPRel_2", 0, 16, 0}, 35 {"FK_GPRel_4", 0, 32, 0}, 36 {"FK_GPRel_8", 0, 64, 0}, 37 {"FK_DTPRel_4", 0, 32, 0}, 38 {"FK_DTPRel_8", 0, 64, 0}, 39 {"FK_TPRel_4", 0, 32, 0}, 40 {"FK_TPRel_8", 0, 64, 0}, 41 {"FK_SecRel_1", 0, 8, 0}, 42 {"FK_SecRel_2", 0, 16, 0}, 43 {"FK_SecRel_4", 0, 32, 0}, 44 {"FK_SecRel_8", 0, 64, 0}}; 45 46 assert((size_t)Kind <= array_lengthof(Builtins) && "Unknown fixup kind"); 47 return Builtins[Kind]; 48 } 49 50 bool MCAsmBackend::fixupNeedsRelaxationAdvanced( 51 const MCFixup &Fixup, bool Resolved, uint64_t Value, 52 const MCRelaxableFragment *DF, const MCAsmLayout &Layout) const { 53 if (!Resolved) 54 return true; 55 return fixupNeedsRelaxation(Fixup, Value, DF, Layout); 56 } 57