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comparison lib/Target/Lanai/MCTargetDesc/LanaiELFObjectWriter.cpp @ 120:1172e4bd9c6f

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update 4.0.0
author mir3636
date Fri, 25 Nov 2016 19:14:25 +0900
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children 803732b1fca8
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101:34baf5011add 120:1172e4bd9c6f
1 //===-- LanaiELFObjectWriter.cpp - Lanai ELF Writer -----------------------===//
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 "MCTargetDesc/LanaiBaseInfo.h"
11 #include "MCTargetDesc/LanaiFixupKinds.h"
12 #include "MCTargetDesc/LanaiMCTargetDesc.h"
13 #include "llvm/MC/MCELFObjectWriter.h"
14 #include "llvm/MC/MCSymbol.h"
15 #include "llvm/Support/ErrorHandling.h"
16 #include "llvm/Support/raw_ostream.h"
17
18 using namespace llvm;
19
20 namespace {
21 class LanaiELFObjectWriter : public MCELFObjectTargetWriter {
22 public:
23 explicit LanaiELFObjectWriter(uint8_t OSABI);
24
25 ~LanaiELFObjectWriter() override;
26
27 protected:
28 unsigned getRelocType(MCContext &Ctx, const MCValue &Target,
29 const MCFixup &Fixup, bool IsPCRel) const override;
30 bool needsRelocateWithSymbol(const MCSymbol &SD,
31 unsigned Type) const override;
32 };
33 } // namespace
34
35 LanaiELFObjectWriter::LanaiELFObjectWriter(uint8_t OSABI)
36 : MCELFObjectTargetWriter(/*Is64Bit_=*/false, OSABI, ELF::EM_LANAI,
37 /*HasRelocationAddend=*/true) {}
38
39 LanaiELFObjectWriter::~LanaiELFObjectWriter() {}
40
41 unsigned LanaiELFObjectWriter::getRelocType(MCContext & /*Ctx*/,
42 const MCValue & /*Target*/,
43 const MCFixup &Fixup,
44 bool /*IsPCRel*/) const {
45 unsigned Type;
46 unsigned Kind = static_cast<unsigned>(Fixup.getKind());
47 switch (Kind) {
48 case Lanai::FIXUP_LANAI_21:
49 Type = ELF::R_LANAI_21;
50 break;
51 case Lanai::FIXUP_LANAI_21_F:
52 Type = ELF::R_LANAI_21_F;
53 break;
54 case Lanai::FIXUP_LANAI_25:
55 Type = ELF::R_LANAI_25;
56 break;
57 case Lanai::FIXUP_LANAI_32:
58 case FK_Data_4:
59 Type = ELF::R_LANAI_32;
60 break;
61 case Lanai::FIXUP_LANAI_HI16:
62 Type = ELF::R_LANAI_HI16;
63 break;
64 case Lanai::FIXUP_LANAI_LO16:
65 Type = ELF::R_LANAI_LO16;
66 break;
67 case Lanai::FIXUP_LANAI_NONE:
68 Type = ELF::R_LANAI_NONE;
69 break;
70
71 default:
72 llvm_unreachable("Invalid fixup kind!");
73 }
74 return Type;
75 }
76
77 bool LanaiELFObjectWriter::needsRelocateWithSymbol(const MCSymbol & /*SD*/,
78 unsigned Type) const {
79 switch (Type) {
80 case ELF::R_LANAI_21:
81 case ELF::R_LANAI_21_F:
82 case ELF::R_LANAI_25:
83 case ELF::R_LANAI_32:
84 case ELF::R_LANAI_HI16:
85 return true;
86 default:
87 return false;
88 }
89 }
90
91 MCObjectWriter *llvm::createLanaiELFObjectWriter(raw_pwrite_stream &OS,
92 uint8_t OSABI) {
93 MCELFObjectTargetWriter *MOTW = new LanaiELFObjectWriter(OSABI);
94 return createELFObjectWriter(MOTW, OS, /*IsLittleEndian=*/false);
95 }