1 //===- MCAsmBackend.cpp - Target MC Assembly Backend ----------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/MC/MCAsmBackend.h"
11 #include "llvm/ADT/None.h"
12 #include "llvm/ADT/STLExtras.h"
13 #include "llvm/MC/MCFixupKindInfo.h"
20 MCAsmBackend::MCAsmBackend() = default;
22 MCAsmBackend::~MCAsmBackend() = default;
24 Optional<MCFixupKind> MCAsmBackend::getFixupKind(StringRef Name) const {
28 const MCFixupKindInfo &MCAsmBackend::getFixupKindInfo(MCFixupKind Kind) const {
29 static const MCFixupKindInfo Builtins[] = {
30 {"FK_Data_1", 0, 8, 0},
31 {"FK_Data_2", 0, 16, 0},
32 {"FK_Data_4", 0, 32, 0},
33 {"FK_Data_8", 0, 64, 0},
34 {"FK_PCRel_1", 0, 8, MCFixupKindInfo::FKF_IsPCRel},
35 {"FK_PCRel_2", 0, 16, MCFixupKindInfo::FKF_IsPCRel},
36 {"FK_PCRel_4", 0, 32, MCFixupKindInfo::FKF_IsPCRel},
37 {"FK_PCRel_8", 0, 64, MCFixupKindInfo::FKF_IsPCRel},
38 {"FK_GPRel_1", 0, 8, 0},
39 {"FK_GPRel_2", 0, 16, 0},
40 {"FK_GPRel_4", 0, 32, 0},
41 {"FK_GPRel_8", 0, 64, 0},
42 {"FK_DTPRel_4", 0, 32, 0},
43 {"FK_DTPRel_8", 0, 64, 0},
44 {"FK_TPRel_4", 0, 32, 0},
45 {"FK_TPRel_8", 0, 64, 0},
46 {"FK_SecRel_1", 0, 8, 0},
47 {"FK_SecRel_2", 0, 16, 0},
48 {"FK_SecRel_4", 0, 32, 0},
49 {"FK_SecRel_8", 0, 64, 0}};
51 assert((size_t)Kind <= array_lengthof(Builtins) && "Unknown fixup kind");
52 return Builtins[Kind];
55 bool MCAsmBackend::fixupNeedsRelaxationAdvanced(
56 const MCFixup &Fixup, bool Resolved, uint64_t Value,
57 const MCRelaxableFragment *DF, const MCAsmLayout &Layout) const {
60 return fixupNeedsRelaxation(Fixup, Value, DF, Layout);