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// tls.h -- Thread-Local Storage utility routines for gold -*- C++ -*-
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// Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
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// Written by Ian Lance Taylor <iant@google.com>.
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// This file is part of gold.
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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// MA 02110-1301, USA.
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#ifndef GOLD_TLS_H
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#define GOLD_TLS_H
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#include "elfcpp.h"
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#include "reloc.h"
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namespace gold
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{
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namespace tls
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{
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// This is used for relocations that can be converted to a different,
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// more efficient type of relocation.
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enum Tls_optimization
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{
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TLSOPT_NONE, // Can not convert this relocation to a more efficient one.
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TLSOPT_TO_LD, // Can convert General Dynamic to Local Dynamic.
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TLSOPT_TO_LE, // Can convert GD or LD to Local-Exec.
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TLSOPT_TO_IE, // Can convert GD or LD or LE to Initial-Exec.
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};
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// Check the range for a TLS relocation. This is inlined for efficiency.
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template<int size, bool big_endian>
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inline void
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check_range(const Relocate_info<size, big_endian>* relinfo,
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size_t relnum,
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typename elfcpp::Elf_types<size>::Elf_Addr rel_offset,
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section_size_type view_size, int off)
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{
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typename elfcpp::Elf_types<size>::Elf_Addr offset = rel_offset + off;
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// Elf_Addr is unsigned, so this also tests for signed offset < 0.
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if (offset > view_size)
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gold_error_at_location(relinfo, relnum, rel_offset,
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_("TLS relocation out of range"));
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}
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// Check the validity of a TLS relocation. This is like assert.
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template<int size, bool big_endian>
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inline void
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check_tls(const Relocate_info<size, big_endian>* relinfo,
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size_t relnum,
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typename elfcpp::Elf_types<size>::Elf_Addr rel_offset,
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bool valid)
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{
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if (!valid)
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gold_error_at_location(relinfo, relnum, rel_offset,
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_("TLS relocation against invalid instruction"));
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}
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} // End namespace tls.
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} // End namespace gold.
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#endif // !defined(GOLD_TLS_H)
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