| // tls.h -- Thread-Local Storage utility routines for gold -*- C++ -*- |
| |
| // Copyright (C) 2006-2024 Free Software Foundation, Inc. |
| // Written by Ian Lance Taylor <iant@google.com>. |
| |
| // This file is part of gold. |
| |
| // This program is free software; you can redistribute it and/or modify |
| // it under the terms of the GNU General Public License as published by |
| // the Free Software Foundation; either version 3 of the License, or |
| // (at your option) any later version. |
| |
| // This program is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // You should have received a copy of the GNU General Public License |
| // along with this program; if not, write to the Free Software |
| // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| // MA 02110-1301, USA. |
| |
| #ifndef GOLD_TLS_H |
| #define GOLD_TLS_H |
| |
| #include "elfcpp.h" |
| #include "reloc.h" |
| |
| namespace gold |
| { |
| |
| namespace tls |
| { |
| |
| // This is used for relocations that can be converted to a different, |
| // more efficient type of relocation. |
| |
| enum Tls_optimization |
| { |
| TLSOPT_NONE, // Can not convert this relocation to a more efficient one. |
| TLSOPT_TO_LD, // Can convert General Dynamic to Local Dynamic. |
| TLSOPT_TO_LE, // Can convert GD or LD to Local-Exec. |
| TLSOPT_TO_IE, // Can convert GD or LD or LE to Initial-Exec. |
| }; |
| |
| // Check the range for a TLS relocation. This is inlined for efficiency. |
| |
| template<int size, bool big_endian> |
| inline void |
| check_range(const Relocate_info<size, big_endian>* relinfo, |
| size_t relnum, |
| typename elfcpp::Elf_types<size>::Elf_Addr rel_offset, |
| section_size_type view_size, int off) |
| { |
| typename elfcpp::Elf_types<size>::Elf_Addr offset = rel_offset + off; |
| // Elf_Addr is unsigned, so this also tests for signed offset < 0. |
| if (offset > view_size) |
| gold_error_at_location(relinfo, relnum, rel_offset, |
| _("TLS relocation out of range")); |
| } |
| |
| // Check the validity of a TLS relocation. This is like assert. |
| |
| template<int size, bool big_endian> |
| inline void |
| check_tls(const Relocate_info<size, big_endian>* relinfo, |
| size_t relnum, |
| typename elfcpp::Elf_types<size>::Elf_Addr rel_offset, |
| bool valid) |
| { |
| if (!valid) |
| gold_error_at_location(relinfo, relnum, rel_offset, |
| _("TLS relocation against invalid instruction")); |
| } |
| |
| |
| } // End namespace tls. |
| |
| } // End namespace gold. |
| |
| #endif // !defined(GOLD_TLS_H) |