1 //===-- SparcELFObjectWriter.cpp - Sparc ELF Writer -----------------------===//
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 "MCTargetDesc/SparcFixupKinds.h"
11 #include "MCTargetDesc/SparcMCExpr.h"
12 #include "MCTargetDesc/SparcMCTargetDesc.h"
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"
22 class SparcELFObjectWriter : public MCELFObjectTargetWriter {
24 SparcELFObjectWriter(bool Is64Bit, uint8_t OSABI)
25 : MCELFObjectTargetWriter(Is64Bit, OSABI,
26 Is64Bit ? ELF::EM_SPARCV9 : ELF::EM_SPARC,
27 /*HasRelocationAddend*/ true) {}
29 virtual ~SparcELFObjectWriter() {}
31 virtual unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup,
32 bool IsPCRel, bool IsRelocWithSymbol,
33 int64_t Addend) const;
35 virtual const MCSymbol *ExplicitRelSym(const MCAssembler &Asm,
36 const MCValue &Target,
44 unsigned SparcELFObjectWriter::GetRelocType(const MCValue &Target,
47 bool IsRelocWithSymbol,
48 int64_t Addend) const {
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;
56 switch((unsigned)Fixup.getKind()) {
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;
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;
72 switch((unsigned)Fixup.getKind()) {
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)
79 case FK_Data_4: return ((Fixup.getOffset() % 4)
82 case FK_Data_8: return ((Fixup.getOffset() % 8)
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;
92 case Sparc::fixup_sparc_got22: return ELF::R_SPARC_GOT22;
93 case Sparc::fixup_sparc_got10: return ELF::R_SPARC_GOT10;
96 return ELF::R_SPARC_NONE;
99 const MCSymbol *SparcELFObjectWriter::ExplicitRelSym(const MCAssembler &Asm,
100 const MCValue &Target,
102 const MCFixup &Fixup,
103 bool IsPCRel) const {
105 if (!Target.getSymA())
107 switch((unsigned)Fixup.getKind()) {
109 case Sparc::fixup_sparc_got22:
110 case Sparc::fixup_sparc_got10:
111 return &Target.getSymA()->getSymbol().AliasedSymbol();
116 MCObjectWriter *llvm::createSparcELFObjectWriter(raw_ostream &OS,
119 MCELFObjectTargetWriter *MOTW = new SparcELFObjectWriter(Is64Bit, OSABI);
120 return createELFObjectWriter(MOTW, OS, /*IsLittleEndian=*/false);