diff options
Diffstat (limited to 'lib/Target/AArch64/MCTargetDesc/AArch64ELFObjectWriter.cpp')
| -rw-r--r-- | lib/Target/AArch64/MCTargetDesc/AArch64ELFObjectWriter.cpp | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/lib/Target/AArch64/MCTargetDesc/AArch64ELFObjectWriter.cpp b/lib/Target/AArch64/MCTargetDesc/AArch64ELFObjectWriter.cpp new file mode 100644 index 0000000000..476b94e70f --- /dev/null +++ b/lib/Target/AArch64/MCTargetDesc/AArch64ELFObjectWriter.cpp @@ -0,0 +1,287 @@ +//===-- 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); +} |