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
MCAsmBackend()15 MCAsmBackend::MCAsmBackend() : HasDataInCodeSupport(false) {}
16
~MCAsmBackend()17 MCAsmBackend::~MCAsmBackend() {}
18
getFixupKind(StringRef Name,MCFixupKind & MappedKind) const19 bool MCAsmBackend::getFixupKind(StringRef Name, MCFixupKind &MappedKind) const {
20 return false;
21 }
22
getFixupKindInfo(MCFixupKind Kind) const23 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_SecRel_1", 0, 8, 0},
38 {"FK_SecRel_2", 0, 16, 0},
39 {"FK_SecRel_4", 0, 32, 0},
40 {"FK_SecRel_8", 0, 64, 0}};
41
42 assert((size_t)Kind <= array_lengthof(Builtins) && "Unknown fixup kind");
43 return Builtins[Kind];
44 }
45
fixupNeedsRelaxationAdvanced(const MCFixup & Fixup,bool Resolved,uint64_t Value,const MCRelaxableFragment * DF,const MCAsmLayout & Layout) const46 bool MCAsmBackend::fixupNeedsRelaxationAdvanced(
47 const MCFixup &Fixup, bool Resolved, uint64_t Value,
48 const MCRelaxableFragment *DF, const MCAsmLayout &Layout) const {
49 if (!Resolved)
50 return true;
51 return fixupNeedsRelaxation(Fixup, Value, DF, Layout);
52 }
53