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/MCObjectWriter.h"
17 #include "llvm/MC/MCValue.h"
18 #include "llvm/Support/ErrorHandling.h"
23 class SparcELFObjectWriter : public MCELFObjectTargetWriter {
25 SparcELFObjectWriter(bool Is64Bit, uint8_t OSABI)
26 : MCELFObjectTargetWriter(Is64Bit, OSABI,
27 Is64Bit ? ELF::EM_SPARCV9 : ELF::EM_SPARC,
28 /*HasRelocationAddend*/ true) {}
30 ~SparcELFObjectWriter() override {}
33 unsigned getRelocType(MCContext &Ctx, const MCValue &Target,
34 const MCFixup &Fixup, bool IsPCRel) const override;
36 bool needsRelocateWithSymbol(const MCSymbol &Sym,
37 unsigned Type) const override;
42 unsigned SparcELFObjectWriter::getRelocType(MCContext &Ctx,
43 const MCValue &Target,
47 if (const SparcMCExpr *SExpr = dyn_cast<SparcMCExpr>(Fixup.getValue())) {
48 if (SExpr->getKind() == SparcMCExpr::VK_Sparc_R_DISP32)
49 return ELF::R_SPARC_DISP32;
53 switch((unsigned)Fixup.getKind()) {
55 llvm_unreachable("Unimplemented fixup -> relocation");
56 case FK_Data_1: return ELF::R_SPARC_DISP8;
57 case FK_Data_2: return ELF::R_SPARC_DISP16;
58 case FK_Data_4: return ELF::R_SPARC_DISP32;
59 case FK_Data_8: return ELF::R_SPARC_DISP64;
60 case Sparc::fixup_sparc_call30: return ELF::R_SPARC_WDISP30;
61 case Sparc::fixup_sparc_br22: return ELF::R_SPARC_WDISP22;
62 case Sparc::fixup_sparc_br19: return ELF::R_SPARC_WDISP19;
63 case Sparc::fixup_sparc_pc22: return ELF::R_SPARC_PC22;
64 case Sparc::fixup_sparc_pc10: return ELF::R_SPARC_PC10;
65 case Sparc::fixup_sparc_wplt30: return ELF::R_SPARC_WPLT30;
69 switch((unsigned)Fixup.getKind()) {
71 llvm_unreachable("Unimplemented fixup -> relocation");
72 case FK_Data_1: return ELF::R_SPARC_8;
73 case FK_Data_2: return ((Fixup.getOffset() % 2)
76 case FK_Data_4: return ((Fixup.getOffset() % 4)
79 case FK_Data_8: return ((Fixup.getOffset() % 8)
82 case Sparc::fixup_sparc_13: return ELF::R_SPARC_13;
83 case Sparc::fixup_sparc_hi22: return ELF::R_SPARC_HI22;
84 case Sparc::fixup_sparc_lo10: return ELF::R_SPARC_LO10;
85 case Sparc::fixup_sparc_h44: return ELF::R_SPARC_H44;
86 case Sparc::fixup_sparc_m44: return ELF::R_SPARC_M44;
87 case Sparc::fixup_sparc_l44: return ELF::R_SPARC_L44;
88 case Sparc::fixup_sparc_hh: return ELF::R_SPARC_HH22;
89 case Sparc::fixup_sparc_hm: return ELF::R_SPARC_HM10;
90 case Sparc::fixup_sparc_got22: return ELF::R_SPARC_GOT22;
91 case Sparc::fixup_sparc_got10: return ELF::R_SPARC_GOT10;
92 case Sparc::fixup_sparc_got13: return ELF::R_SPARC_GOT13;
93 case Sparc::fixup_sparc_tls_gd_hi22: return ELF::R_SPARC_TLS_GD_HI22;
94 case Sparc::fixup_sparc_tls_gd_lo10: return ELF::R_SPARC_TLS_GD_LO10;
95 case Sparc::fixup_sparc_tls_gd_add: return ELF::R_SPARC_TLS_GD_ADD;
96 case Sparc::fixup_sparc_tls_gd_call: return ELF::R_SPARC_TLS_GD_CALL;
97 case Sparc::fixup_sparc_tls_ldm_hi22: return ELF::R_SPARC_TLS_LDM_HI22;
98 case Sparc::fixup_sparc_tls_ldm_lo10: return ELF::R_SPARC_TLS_LDM_LO10;
99 case Sparc::fixup_sparc_tls_ldm_add: return ELF::R_SPARC_TLS_LDM_ADD;
100 case Sparc::fixup_sparc_tls_ldm_call: return ELF::R_SPARC_TLS_LDM_CALL;
101 case Sparc::fixup_sparc_tls_ldo_hix22: return ELF::R_SPARC_TLS_LDO_HIX22;
102 case Sparc::fixup_sparc_tls_ldo_lox10: return ELF::R_SPARC_TLS_LDO_LOX10;
103 case Sparc::fixup_sparc_tls_ldo_add: return ELF::R_SPARC_TLS_LDO_ADD;
104 case Sparc::fixup_sparc_tls_ie_hi22: return ELF::R_SPARC_TLS_IE_HI22;
105 case Sparc::fixup_sparc_tls_ie_lo10: return ELF::R_SPARC_TLS_IE_LO10;
106 case Sparc::fixup_sparc_tls_ie_ld: return ELF::R_SPARC_TLS_IE_LD;
107 case Sparc::fixup_sparc_tls_ie_ldx: return ELF::R_SPARC_TLS_IE_LDX;
108 case Sparc::fixup_sparc_tls_ie_add: return ELF::R_SPARC_TLS_IE_ADD;
109 case Sparc::fixup_sparc_tls_le_hix22: return ELF::R_SPARC_TLS_LE_HIX22;
110 case Sparc::fixup_sparc_tls_le_lox10: return ELF::R_SPARC_TLS_LE_LOX10;
113 return ELF::R_SPARC_NONE;
116 bool SparcELFObjectWriter::needsRelocateWithSymbol(const MCSymbol &Sym,
117 unsigned Type) const {
122 // All relocations that use a GOT need a symbol, not an offset, as
123 // the offset of the symbol within the section is irrelevant to
124 // where the GOT entry is. Don't need to list all the TLS entries,
125 // as they're all marked as requiring a symbol anyways.
126 case ELF::R_SPARC_GOT10:
127 case ELF::R_SPARC_GOT13:
128 case ELF::R_SPARC_GOT22:
129 case ELF::R_SPARC_GOTDATA_HIX22:
130 case ELF::R_SPARC_GOTDATA_LOX10:
131 case ELF::R_SPARC_GOTDATA_OP_HIX22:
132 case ELF::R_SPARC_GOTDATA_OP_LOX10:
137 std::unique_ptr<MCObjectTargetWriter>
138 llvm::createSparcELFObjectWriter(bool Is64Bit, uint8_t OSABI) {
139 return llvm::make_unique<SparcELFObjectWriter>(Is64Bit, OSABI);