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 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" 18 19 using namespace llvm; 20 21 namespace { 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 unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup, 32 bool IsPCRel) const override; 33 }; 34 } 35 36 unsigned SparcELFObjectWriter::GetRelocType(const MCValue &Target, 37 const MCFixup &Fixup, 38 bool IsPCRel) const { 39 40 if (const SparcMCExpr *SExpr = dyn_cast<SparcMCExpr>(Fixup.getValue())) { 41 if (SExpr->getKind() == SparcMCExpr::VK_Sparc_R_DISP32) 42 return ELF::R_SPARC_DISP32; 43 } 44 45 if (IsPCRel) { 46 switch((unsigned)Fixup.getKind()) { 47 default: 48 llvm_unreachable("Unimplemented fixup -> relocation"); 49 case FK_Data_1: return ELF::R_SPARC_DISP8; 50 case FK_Data_2: return ELF::R_SPARC_DISP16; 51 case FK_Data_4: return ELF::R_SPARC_DISP32; 52 case FK_Data_8: return ELF::R_SPARC_DISP64; 53 case Sparc::fixup_sparc_call30: return ELF::R_SPARC_WDISP30; 54 case Sparc::fixup_sparc_br22: return ELF::R_SPARC_WDISP22; 55 case Sparc::fixup_sparc_br19: return ELF::R_SPARC_WDISP19; 56 case Sparc::fixup_sparc_pc22: return ELF::R_SPARC_PC22; 57 case Sparc::fixup_sparc_pc10: return ELF::R_SPARC_PC10; 58 case Sparc::fixup_sparc_wplt30: return ELF::R_SPARC_WPLT30; 59 } 60 } 61 62 switch((unsigned)Fixup.getKind()) { 63 default: 64 llvm_unreachable("Unimplemented fixup -> relocation"); 65 case FK_Data_1: return ELF::R_SPARC_8; 66 case FK_Data_2: return ((Fixup.getOffset() % 2) 67 ? ELF::R_SPARC_UA16 68 : ELF::R_SPARC_16); 69 case FK_Data_4: return ((Fixup.getOffset() % 4) 70 ? ELF::R_SPARC_UA32 71 : ELF::R_SPARC_32); 72 case FK_Data_8: return ((Fixup.getOffset() % 8) 73 ? ELF::R_SPARC_UA64 74 : ELF::R_SPARC_64); 75 case Sparc::fixup_sparc_hi22: return ELF::R_SPARC_HI22; 76 case Sparc::fixup_sparc_lo10: return ELF::R_SPARC_LO10; 77 case Sparc::fixup_sparc_h44: return ELF::R_SPARC_H44; 78 case Sparc::fixup_sparc_m44: return ELF::R_SPARC_M44; 79 case Sparc::fixup_sparc_l44: return ELF::R_SPARC_L44; 80 case Sparc::fixup_sparc_hh: return ELF::R_SPARC_HH22; 81 case Sparc::fixup_sparc_hm: return ELF::R_SPARC_HM10; 82 case Sparc::fixup_sparc_got22: return ELF::R_SPARC_GOT22; 83 case Sparc::fixup_sparc_got10: return ELF::R_SPARC_GOT10; 84 case Sparc::fixup_sparc_tls_gd_hi22: return ELF::R_SPARC_TLS_GD_HI22; 85 case Sparc::fixup_sparc_tls_gd_lo10: return ELF::R_SPARC_TLS_GD_LO10; 86 case Sparc::fixup_sparc_tls_gd_add: return ELF::R_SPARC_TLS_GD_ADD; 87 case Sparc::fixup_sparc_tls_gd_call: return ELF::R_SPARC_TLS_GD_CALL; 88 case Sparc::fixup_sparc_tls_ldm_hi22: return ELF::R_SPARC_TLS_LDM_HI22; 89 case Sparc::fixup_sparc_tls_ldm_lo10: return ELF::R_SPARC_TLS_LDM_LO10; 90 case Sparc::fixup_sparc_tls_ldm_add: return ELF::R_SPARC_TLS_LDM_ADD; 91 case Sparc::fixup_sparc_tls_ldm_call: return ELF::R_SPARC_TLS_LDM_CALL; 92 case Sparc::fixup_sparc_tls_ldo_hix22: return ELF::R_SPARC_TLS_LDO_HIX22; 93 case Sparc::fixup_sparc_tls_ldo_lox10: return ELF::R_SPARC_TLS_LDO_LOX10; 94 case Sparc::fixup_sparc_tls_ldo_add: return ELF::R_SPARC_TLS_LDO_ADD; 95 case Sparc::fixup_sparc_tls_ie_hi22: return ELF::R_SPARC_TLS_IE_HI22; 96 case Sparc::fixup_sparc_tls_ie_lo10: return ELF::R_SPARC_TLS_IE_LO10; 97 case Sparc::fixup_sparc_tls_ie_ld: return ELF::R_SPARC_TLS_IE_LD; 98 case Sparc::fixup_sparc_tls_ie_ldx: return ELF::R_SPARC_TLS_IE_LDX; 99 case Sparc::fixup_sparc_tls_ie_add: return ELF::R_SPARC_TLS_IE_ADD; 100 case Sparc::fixup_sparc_tls_le_hix22: return ELF::R_SPARC_TLS_LE_HIX22; 101 case Sparc::fixup_sparc_tls_le_lox10: return ELF::R_SPARC_TLS_LE_LOX10; 102 } 103 104 return ELF::R_SPARC_NONE; 105 } 106 107 MCObjectWriter *llvm::createSparcELFObjectWriter(raw_ostream &OS, 108 bool Is64Bit, 109 uint8_t OSABI) { 110 MCELFObjectTargetWriter *MOTW = new SparcELFObjectWriter(Is64Bit, OSABI); 111 return createELFObjectWriter(MOTW, OS, /*IsLittleEndian=*/false); 112 } 113
