diff options
Diffstat (limited to 'lld/lib/ReaderWriter/ELF/ARM')
| -rw-r--r-- | lld/lib/ReaderWriter/ELF/ARM/ARMRelocationPass.cpp | 90 |
1 files changed, 52 insertions, 38 deletions
diff --git a/lld/lib/ReaderWriter/ELF/ARM/ARMRelocationPass.cpp b/lld/lib/ReaderWriter/ELF/ARM/ARMRelocationPass.cpp index 0978487f4f1..531d4e6a8aa 100644 --- a/lld/lib/ReaderWriter/ELF/ARM/ARMRelocationPass.cpp +++ b/lld/lib/ReaderWriter/ELF/ARM/ARMRelocationPass.cpp @@ -438,6 +438,56 @@ protected: return std::error_code(); } + /// \brief Get the veneer for ARM B/BL instructions + /// in absolute code. + const VeneerAtom *getVeneer_ARM_B_BL_Abs(const DefinedAtom *da, + StringRef secName) { + auto veneer = _veneerAtoms.lookup(da); + if (!veneer.empty()) + return veneer._veneer; + + std::string name = "__"; + name += da->name(); + name += "_from_arm"; + // Create parts of veneer with mapping symbols. + auto v_a = + new (_file._alloc) Veneer_ARM_B_BL_Abs_a_Atom(_file, secName, name); + addVeneerWithMapping<DefinedAtom::codeARM_a>(da, v_a, name); + auto v_d = new (_file._alloc) Veneer_ARM_B_BL_Abs_d_Atom(_file, secName); + addVeneerWithMapping<DefinedAtom::codeARM_d>(v_a, v_d, name); + + // Fake reference to show connection between parts of veneer. + v_a->addReferenceELF_ARM(R_ARM_NONE, 0, v_d, 0); + // Real reference to fixup. + v_d->addReferenceELF_ARM(R_ARM_ABS32, 0, da, 0); + return v_a; + } + + /// \brief Get the veneer for Thumb B/BL instructions + /// in absolute code. + const VeneerAtom *getVeneer_THM_B_BL_Abs(const DefinedAtom *da, + StringRef secName) { + auto veneer = _veneerAtoms.lookup(da); + if (!veneer.empty()) + return veneer._veneer; + + std::string name = "__"; + name += da->name(); + name += "_from_thumb"; + // Create parts of veneer with mapping symbols. + auto v_t = + new (_file._alloc) Veneer_THM_B_BL_Abs_t_Atom(_file, secName, name); + addVeneerWithMapping<DefinedAtom::codeARM_t>(da, v_t, name); + auto v_a = new (_file._alloc) Veneer_THM_B_BL_Abs_a_Atom(_file, secName); + addVeneerWithMapping<DefinedAtom::codeARM_a>(v_t, v_a, name); + + // Fake reference to show connection between parts of veneer. + v_t->addReferenceELF_ARM(R_ARM_NONE, 0, v_a, 0); + // Real reference to fixup. + v_a->addReferenceELF_ARM(R_ARM_JUMP24, 0, da, 0); + return v_t; + } + std::error_code handleTLSIE32(const Reference &ref) { if (const auto *target = dyn_cast<DefinedAtom>(ref.target())) { const_cast<Reference &>(ref) @@ -765,49 +815,13 @@ public: /// \brief Get the veneer for ARM B/BL instructions. const VeneerAtom *getVeneer_ARM_B_BL(const DefinedAtom *da, StringRef secName) { - auto veneer = _veneerAtoms.lookup(da); - if (!veneer.empty()) - return veneer._veneer; - - std::string name = "__"; - name += da->name(); - name += "_from_arm"; - // Create parts of veneer with mapping symbols. - auto v_a = - new (_file._alloc) Veneer_ARM_B_BL_Abs_a_Atom(_file, secName, name); - addVeneerWithMapping<DefinedAtom::codeARM_a>(da, v_a, name); - auto v_d = new (_file._alloc) Veneer_ARM_B_BL_Abs_d_Atom(_file, secName); - addVeneerWithMapping<DefinedAtom::codeARM_d>(v_a, v_d, name); - - // Fake reference to show connection between parts of veneer. - v_a->addReferenceELF_ARM(R_ARM_NONE, 0, v_d, 0); - // Real reference to fixup. - v_d->addReferenceELF_ARM(R_ARM_ABS32, 0, da, 0); - return v_a; + return getVeneer_ARM_B_BL_Abs(da, secName); } /// \brief Get the veneer for Thumb B/BL instructions. const VeneerAtom *getVeneer_THM_B_BL(const DefinedAtom *da, StringRef secName) { - auto veneer = _veneerAtoms.lookup(da); - if (!veneer.empty()) - return veneer._veneer; - - std::string name = "__"; - name += da->name(); - name += "_from_thumb"; - // Create parts of veneer with mapping symbols. - auto v_t = - new (_file._alloc) Veneer_THM_B_BL_Abs_t_Atom(_file, secName, name); - addVeneerWithMapping<DefinedAtom::codeARM_t>(da, v_t, name); - auto v_a = new (_file._alloc) Veneer_THM_B_BL_Abs_a_Atom(_file, secName); - addVeneerWithMapping<DefinedAtom::codeARM_a>(v_t, v_a, name); - - // Fake reference to show connection between parts of veneer. - v_t->addReferenceELF_ARM(R_ARM_NONE, 0, v_a, 0); - // Real reference to fixup. - v_a->addReferenceELF_ARM(R_ARM_JUMP24, 0, da, 0); - return v_t; + return getVeneer_THM_B_BL_Abs(da, secName); } /// \brief Create a GOT entry for R_ARM_TLS_TPOFF32 reloc. |

