//===-- AArch64ELFObjectWriter.cpp - AArch64 ELF Writer -------------------===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// #include "MCTargetDesc/AArch64FixupKinds.h" #include "MCTargetDesc/AArch64MCTargetDesc.h" #include "llvm/MC/MCELFObjectWriter.h" #include "llvm/MC/MCValue.h" #include "llvm/Support/ErrorHandling.h" using namespace llvm; namespace { class AArch64ELFObjectWriter : public MCELFObjectTargetWriter { public: AArch64ELFObjectWriter(uint8_t OSABI); virtual ~AArch64ELFObjectWriter(); protected: virtual unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup, bool IsPCRel, bool IsRelocWithSymbol, int64_t Addend) const; private: }; } AArch64ELFObjectWriter::AArch64ELFObjectWriter(uint8_t OSABI) : MCELFObjectTargetWriter(/*Is64Bit*/ true, OSABI, ELF::EM_AARCH64, /*HasRelocationAddend*/ true) {} AArch64ELFObjectWriter::~AArch64ELFObjectWriter() {} unsigned AArch64ELFObjectWriter::GetRelocType(const MCValue &Target, const MCFixup &Fixup, bool IsPCRel, bool IsRelocWithSymbol, int64_t Addend) const { unsigned Type; if (IsPCRel) { switch ((unsigned)Fixup.getKind()) { default: llvm_unreachable("Unimplemented fixup -> relocation"); case FK_Data_8: return ELF::R_AARCH64_PREL64; case FK_Data_4: return ELF::R_AARCH64_PREL32; case FK_Data_2: return ELF::R_AARCH64_PREL16; case AArch64::fixup_a64_ld_prel: Type = ELF::R_AARCH64_LD_PREL_LO19; break; case AArch64::fixup_a64_adr_prel: Type = ELF::R_AARCH64_ADR_PREL_LO21; break; case AArch64::fixup_a64_adr_prel_page: Type = ELF::R_AARCH64_ADR_PREL_PG_HI21; break; case AArch64::fixup_a64_adr_prel_got_page: Type = ELF::R_AARCH64_ADR_GOT_PAGE; break; case AArch64::fixup_a64_tstbr: Type = ELF::R_AARCH64_TSTBR14; break; case AArch64::fixup_a64_condbr: Type = ELF::R_AARCH64_CONDBR19; break; case AArch64::fixup_a64_uncondbr: Type = ELF::R_AARCH64_JUMP26; break; case AArch64::fixup_a64_call: Type = ELF::R_AARCH64_CALL26; break; case AArch64::fixup_a64_adr_gottprel_page: Type = ELF::R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21; break; case AArch64::fixup_a64_ld_gottprel_prel19: Type = ELF::R_AARCH64_TLSIE_LD_GOTTPREL_PREL19; break; case AArch64::fixup_a64_tlsdesc_adr_page: Type = ELF::R_AARCH64_TLSDESC_ADR_PAGE; break; } } else { switch ((unsigned)Fixup.getKind()) { default: llvm_unreachable("Unimplemented fixup -> relocation"); case FK_Data_8: return ELF::R_AARCH64_ABS64; case FK_Data_4: return ELF::R_AARCH64_ABS32; case FK_Data_2: return ELF::R_AARCH64_ABS16; case AArch64::fixup_a64_add_lo12: Type = ELF::R_AARCH64_ADD_ABS_LO12_NC; break; case AArch64::fixup_a64_ld64_got_lo12_nc: Type = ELF::R_AARCH64_LD64_GOT_LO12_NC; break; case AArch64::fixup_a64_ldst8_lo12: Type = ELF::R_AARCH64_LDST8_ABS_LO12_NC; break; case AArch64::fixup_a64_ldst16_lo12: Type = ELF::R_AARCH64_LDST16_ABS_LO12_NC; break; case AArch64::fixup_a64_ldst32_lo12: Type = ELF::R_AARCH64_LDST32_ABS_LO12_NC; break; case AArch64::fixup_a64_ldst64_lo12: Type = ELF::R_AARCH64_LDST64_ABS_LO12_NC; break; case AArch64::fixup_a64_ldst128_lo12: Type = ELF::R_AARCH64_LDST128_ABS_LO12_NC; break; case AArch64::fixup_a64_movw_uabs_g0: Type = ELF::R_AARCH64_MOVW_UABS_G0; break; case AArch64::fixup_a64_movw_uabs_g0_nc: Type = ELF::R_AARCH64_MOVW_UABS_G0_NC; break; case AArch64::fixup_a64_movw_uabs_g1: Type = ELF::R_AARCH64_MOVW_UABS_G1; break; case AArch64::fixup_a64_movw_uabs_g1_nc: Type = ELF::R_AARCH64_MOVW_UABS_G1_NC; break; case AArch64::fixup_a64_movw_uabs_g2: Type = ELF::R_AARCH64_MOVW_UABS_G2; break; case AArch64::fixup_a64_movw_uabs_g2_nc: Type = ELF::R_AARCH64_MOVW_UABS_G2_NC; break; case AArch64::fixup_a64_movw_uabs_g3: Type = ELF::R_AARCH64_MOVW_UABS_G3; break; case AArch64::fixup_a64_movw_sabs_g0: Type = ELF::R_AARCH64_MOVW_SABS_G0; break; case AArch64::fixup_a64_movw_sabs_g1: Type = ELF::R_AARCH64_MOVW_SABS_G1; break; case AArch64::fixup_a64_movw_sabs_g2: Type = ELF::R_AARCH64_MOVW_SABS_G2; break; // TLS Local-dynamic block case AArch64::fixup_a64_movw_dtprel_g2: Type = ELF::R_AARCH64_TLSLD_MOVW_DTPREL_G2; break; case AArch64::fixup_a64_movw_dtprel_g1: Type = ELF::R_AARCH64_TLSLD_MOVW_DTPREL_G1; break; case AArch64::fixup_a64_movw_dtprel_g1_nc: Type = ELF::R_AARCH64_TLSLD_MOVW_DTPREL_G1_NC; break; case AArch64::fixup_a64_movw_dtprel_g0: Type = ELF::R_AARCH64_TLSLD_MOVW_DTPREL_G0; break; case AArch64::fixup_a64_movw_dtprel_g0_nc: Type = ELF::R_AARCH64_TLSLD_MOVW_DTPREL_G0_NC; break; case AArch64::fixup_a64_add_dtprel_hi12: Type = ELF::R_AARCH64_TLSLD_ADD_DTPREL_HI12; break; case AArch64::fixup_a64_add_dtprel_lo12: Type = ELF::R_AARCH64_TLSLD_ADD_DTPREL_LO12; break; case AArch64::fixup_a64_add_dtprel_lo12_nc: Type = ELF::R_AARCH64_TLSLD_ADD_DTPREL_LO12_NC; break; case AArch64::fixup_a64_ldst8_dtprel_lo12: Type = ELF::R_AARCH64_TLSLD_LDST8_DTPREL_LO12; break; case AArch64::fixup_a64_ldst8_dtprel_lo12_nc: Type = ELF::R_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC; break; case AArch64::fixup_a64_ldst16_dtprel_lo12: Type = ELF::R_AARCH64_TLSLD_LDST16_DTPREL_LO12; break; case AArch64::fixup_a64_ldst16_dtprel_lo12_nc: Type = ELF::R_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC; break; case AArch64::fixup_a64_ldst32_dtprel_lo12: Type = ELF::R_AARCH64_TLSLD_LDST32_DTPREL_LO12; break; case AArch64::fixup_a64_ldst32_dtprel_lo12_nc: Type = ELF::R_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC; break; case AArch64::fixup_a64_ldst64_dtprel_lo12: Type = ELF::R_AARCH64_TLSLD_LDST64_DTPREL_LO12; break; case AArch64::fixup_a64_ldst64_dtprel_lo12_nc: Type = ELF::R_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC; break; // TLS initial-exec block case AArch64::fixup_a64_movw_gottprel_g1: Type = ELF::R_AARCH64_TLSIE_MOVW_GOTTPREL_G1; break; case AArch64::fixup_a64_movw_gottprel_g0_nc: Type = ELF::R_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC; break; case AArch64::fixup_a64_ld64_gottprel_lo12_nc: Type = ELF::R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC; break; // TLS local-exec block case AArch64::fixup_a64_movw_tprel_g2: Type = ELF::R_AARCH64_TLSLE_MOVW_TPREL_G2; break; case AArch64::fixup_a64_movw_tprel_g1: Type = ELF::R_AARCH64_TLSLE_MOVW_TPREL_G1; break; case AArch64::fixup_a64_movw_tprel_g1_nc: Type = ELF::R_AARCH64_TLSLE_MOVW_TPREL_G1_NC; break; case AArch64::fixup_a64_movw_tprel_g0: Type = ELF::R_AARCH64_TLSLE_MOVW_TPREL_G0; break; case AArch64::fixup_a64_movw_tprel_g0_nc: Type = ELF::R_AARCH64_TLSLE_MOVW_TPREL_G0_NC; break; case AArch64::fixup_a64_add_tprel_hi12: Type = ELF::R_AARCH64_TLSLE_ADD_TPREL_HI12; break; case AArch64::fixup_a64_add_tprel_lo12: Type = ELF::R_AARCH64_TLSLE_ADD_TPREL_LO12; break; case AArch64::fixup_a64_add_tprel_lo12_nc: Type = ELF::R_AARCH64_TLSLE_ADD_TPREL_LO12_NC; break; case AArch64::fixup_a64_ldst8_tprel_lo12: Type = ELF::R_AARCH64_TLSLE_LDST8_TPREL_LO12; break; case AArch64::fixup_a64_ldst8_tprel_lo12_nc: Type = ELF::R_AARCH64_TLSLE_LDST8_TPREL_LO12_NC; break; case AArch64::fixup_a64_ldst16_tprel_lo12: Type = ELF::R_AARCH64_TLSLE_LDST16_TPREL_LO12; break; case AArch64::fixup_a64_ldst16_tprel_lo12_nc: Type = ELF::R_AARCH64_TLSLE_LDST16_TPREL_LO12_NC; break; case AArch64::fixup_a64_ldst32_tprel_lo12: Type = ELF::R_AARCH64_TLSLE_LDST32_TPREL_LO12; break; case AArch64::fixup_a64_ldst32_tprel_lo12_nc: Type = ELF::R_AARCH64_TLSLE_LDST32_TPREL_LO12_NC; break; case AArch64::fixup_a64_ldst64_tprel_lo12: Type = ELF::R_AARCH64_TLSLE_LDST64_TPREL_LO12; break; case AArch64::fixup_a64_ldst64_tprel_lo12_nc: Type = ELF::R_AARCH64_TLSLE_LDST64_TPREL_LO12_NC; break; // TLS general-dynamic block case AArch64::fixup_a64_tlsdesc_adr_page: Type = ELF::R_AARCH64_TLSDESC_ADR_PAGE; break; case AArch64::fixup_a64_tlsdesc_ld64_lo12_nc: Type = ELF::R_AARCH64_TLSDESC_LD64_LO12_NC; break; case AArch64::fixup_a64_tlsdesc_add_lo12_nc: Type = ELF::R_AARCH64_TLSDESC_ADD_LO12_NC; break; case AArch64::fixup_a64_tlsdesc_call: Type = ELF::R_AARCH64_TLSDESC_CALL; break; } } return Type; } MCObjectWriter *llvm::createAArch64ELFObjectWriter(raw_ostream &OS, uint8_t OSABI) { MCELFObjectTargetWriter *MOTW = new AArch64ELFObjectWriter(OSABI); return createELFObjectWriter(MOTW, OS, /*IsLittleEndian=*/true); }