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gerrit-public.fairphone.software / toolchain / llvm-project / 104643d0aac89dbfab348426507b57de942cc011 / . / llvm / lib / Target / Sparc / MCTargetDesc / SparcELFObjectWriter.cpp
blob: da1b9999c13674ff93d3a3927bb7eac679bc49d5 [file] [log] [blame]
Venkatraman Govindarajub73aeca2014-01-06 01:22:54 +0000[diff] [blame]1//===-- SparcELFObjectWriter.cpp - Sparc 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
Venkatraman Govindarajub73aeca2014-01-06 01:22:54 +0000[diff] [blame]10#include "MCTargetDesc/SparcFixupKinds.h"
Venkatraman Govindaraju104643d2014-02-07 04:24:35 +0000[diff] [blame^]11#include "MCTargetDesc/SparcMCExpr.h"
12#include "MCTargetDesc/SparcMCTargetDesc.h"
Venkatraman Govindarajub73aeca2014-01-06 01:22:54 +0000[diff] [blame]13#include "llvm/ADT/STLExtras.h"
14#include "llvm/MC/MCELFObjectWriter.h"
15#include "llvm/MC/MCExpr.h"
16#include "llvm/MC/MCValue.h"
17#include "llvm/Support/ErrorHandling.h"
18
19using namespace llvm;
20
21namespace {
22 class SparcELFObjectWriter : public MCELFObjectTargetWriter {
23 public:
24 SparcELFObjectWriter(bool Is64Bit, uint8_t OSABI)
25 : MCELFObjectTargetWriter(Is64Bit, OSABI,
26 Is64Bit ? ELF::EM_SPARCV9 : ELF::EM_SPARC,
27 /*HasRelocationAddend*/ true) {}
28
29 virtual ~SparcELFObjectWriter() {}
30 protected:
31 virtual unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup,
32 bool IsPCRel, bool IsRelocWithSymbol,
33 int64_t Addend) const;
34
Venkatraman Govindaraju104643d2014-02-07 04:24:35 +0000[diff] [blame^]35 virtual const MCSymbol *ExplicitRelSym(const MCAssembler &Asm,
36 const MCValue &Target,
37 const MCFragment &F,
38 const MCFixup &Fixup,
39 bool IsPCRel) const;
Venkatraman Govindarajub73aeca2014-01-06 01:22:54 +0000[diff] [blame]40 };
41}
42
43
44unsigned SparcELFObjectWriter::GetRelocType(const MCValue &Target,
45 const MCFixup &Fixup,
46 bool IsPCRel,
47 bool IsRelocWithSymbol,
48 int64_t Addend) const {
Venkatraman Govindaraju104643d2014-02-07 04:24:35 +0000[diff] [blame^]49
50 if (const SparcMCExpr *SExpr = dyn_cast<SparcMCExpr>(Fixup.getValue())) {
51 if (SExpr->getKind() == SparcMCExpr::VK_Sparc_R_DISP32)
52 return ELF::R_SPARC_DISP32;
53 }
54
Venkatraman Govindarajub73aeca2014-01-06 01:22:54 +0000[diff] [blame]55 if (IsPCRel) {
56 switch((unsigned)Fixup.getKind()) {
57 default:
58 llvm_unreachable("Unimplemented fixup -> relocation");
59 case FK_Data_1: return ELF::R_SPARC_DISP8;
60 case FK_Data_2: return ELF::R_SPARC_DISP16;
61 case FK_Data_4: return ELF::R_SPARC_DISP32;
62 case FK_Data_8: return ELF::R_SPARC_DISP64;
63 case Sparc::fixup_sparc_call30: return ELF::R_SPARC_WDISP30;
64 case Sparc::fixup_sparc_br22: return ELF::R_SPARC_WDISP22;
65 case Sparc::fixup_sparc_br19: return ELF::R_SPARC_WDISP19;
Venkatraman Govindaraju104643d2014-02-07 04:24:35 +0000[diff] [blame^]66 case Sparc::fixup_sparc_pc22: return ELF::R_SPARC_PC22;
67 case Sparc::fixup_sparc_pc10: return ELF::R_SPARC_PC10;
68 case Sparc::fixup_sparc_wplt30: return ELF::R_SPARC_WPLT30;
Venkatraman Govindarajub73aeca2014-01-06 01:22:54 +0000[diff] [blame]69 }
70 }
71
72 switch((unsigned)Fixup.getKind()) {
73 default:
74 llvm_unreachable("Unimplemented fixup -> relocation");
75 case FK_Data_1: return ELF::R_SPARC_8;
76 case FK_Data_2: return ((Fixup.getOffset() % 2)
77 ? ELF::R_SPARC_UA16
78 : ELF::R_SPARC_16);
79 case FK_Data_4: return ((Fixup.getOffset() % 4)
80 ? ELF::R_SPARC_UA32
81 : ELF::R_SPARC_32);
82 case FK_Data_8: return ((Fixup.getOffset() % 8)
83 ? ELF::R_SPARC_UA64
84 : ELF::R_SPARC_64);
85 case Sparc::fixup_sparc_hi22: return ELF::R_SPARC_HI22;
86 case Sparc::fixup_sparc_lo10: return ELF::R_SPARC_LO10;
87 case Sparc::fixup_sparc_h44: return ELF::R_SPARC_H44;
88 case Sparc::fixup_sparc_m44: return ELF::R_SPARC_M44;
89 case Sparc::fixup_sparc_l44: return ELF::R_SPARC_L44;
90 case Sparc::fixup_sparc_hh: return ELF::R_SPARC_HH22;
91 case Sparc::fixup_sparc_hm: return ELF::R_SPARC_HM10;
Venkatraman Govindaraju104643d2014-02-07 04:24:35 +0000[diff] [blame^]92 case Sparc::fixup_sparc_got22: return ELF::R_SPARC_GOT22;
93 case Sparc::fixup_sparc_got10: return ELF::R_SPARC_GOT10;
Venkatraman Govindarajub73aeca2014-01-06 01:22:54 +0000[diff] [blame]94 }
Venkatraman Govindaraju104643d2014-02-07 04:24:35 +0000[diff] [blame^]95
Venkatraman Govindarajub73aeca2014-01-06 01:22:54 +0000[diff] [blame]96 return ELF::R_SPARC_NONE;
97}
98
Venkatraman Govindaraju104643d2014-02-07 04:24:35 +0000[diff] [blame^]99const MCSymbol *SparcELFObjectWriter::ExplicitRelSym(const MCAssembler &Asm,
100 const MCValue &Target,
101 const MCFragment &F,
102 const MCFixup &Fixup,
103 bool IsPCRel) const {
104
105 if (!Target.getSymA())
106 return NULL;
107 switch((unsigned)Fixup.getKind()) {
108 default: break;
109 case Sparc::fixup_sparc_got22:
110 case Sparc::fixup_sparc_got10:
111 return &Target.getSymA()->getSymbol().AliasedSymbol();
112 }
113 return NULL;
114}
115
Venkatraman Govindarajub73aeca2014-01-06 01:22:54 +0000[diff] [blame]116MCObjectWriter *llvm::createSparcELFObjectWriter(raw_ostream &OS,
117 bool Is64Bit,
118 uint8_t OSABI) {
119 MCELFObjectTargetWriter *MOTW = new SparcELFObjectWriter(Is64Bit, OSABI);
120 return createELFObjectWriter(MOTW, OS, /*IsLittleEndian=*/false);
121}