240 lines
6.5 KiB
C++
240 lines
6.5 KiB
C++
// gold.h -- general definitions for gold -*- C++ -*-
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// Copyright 2006, 2007 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_GOLD_H
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#define GOLD_GOLD_H
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#include "config.h"
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#include "ansidecl.h"
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#ifdef ENABLE_NLS
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# include <libintl.h>
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# define _(String) gettext (String)
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# ifdef gettext_noop
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# define N_(String) gettext_noop (String)
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# else
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# define N_(String) (String)
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# endif
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#else
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# define gettext(Msgid) (Msgid)
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# define dgettext(Domainname, Msgid) (Msgid)
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# define dcgettext(Domainname, Msgid, Category) (Msgid)
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# define textdomain(Domainname) while (0) /* nothing */
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# define bindtextdomain(Domainname, Dirname) while (0) /* nothing */
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# define _(String) (String)
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# define N_(String) (String)
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#endif
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// Figure out how to get a hash set and a hash map.
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#if defined(HAVE_TR1_UNORDERED_SET) && defined(HAVE_TR1_UNORDERED_MAP)
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#include <tr1/unordered_set>
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#include <tr1/unordered_map>
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// We need a template typedef here.
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#define Unordered_set std::tr1::unordered_set
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#define Unordered_map std::tr1::unordered_map
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#elif defined(HAVE_EXT_HASH_MAP) && defined(HAVE_EXT_HASH_SET)
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#include <ext/hash_map>
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#include <ext/hash_set>
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#include <string>
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#define Unordered_set __gnu_cxx::hash_set
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#define Unordered_map __gnu_cxx::hash_map
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namespace __gnu_cxx
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{
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template<>
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struct hash<std::string>
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{
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size_t
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operator()(std::string s) const
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{ return __stl_hash_string(s.c_str()); }
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};
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template<typename T>
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struct hash<T*>
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{
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size_t
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operator()(T* p) const
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{ return reinterpret_cast<size_t>(p); }
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};
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}
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#else
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// The fallback is to just use set and map.
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#include <set>
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#include <map>
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#define Unordered_set std::set
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#define Unordered_map std::map
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#endif
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#ifndef HAVE_PREAD
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extern "C" ssize_t pread(int, void*, size_t, off_t);
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#endif
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namespace gold
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{
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// This is a hack to work around a problem with older versions of g++.
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// The problem is that they don't support calling a member template by
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// specifying the template parameters. It works to pass in an
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// argument for argument dependent lookup.
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// To use this, the member template method declaration should put
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// ACCEPT_SIZE or ACCEPT_SIZE_ENDIAN after the last parameter. If the
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// method takes no parameters, use ACCEPT_SIZE_ONLY or
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// ACCEPT_SIZE_ENDIAN_ONLY.
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// When calling the method, instead of using fn<size>, use fn
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// SELECT_SIZE_NAME or SELECT_SIZE_ENDIAN_NAME. And after the last
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// argument, put SELECT_SIZE(size) or SELECT_SIZE_ENDIAN(size,
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// big_endian). If there is only one argment, use the _ONLY variants.
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#ifdef HAVE_MEMBER_TEMPLATE_SPECIFICATIONS
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#define SELECT_SIZE_NAME(size) <size>
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#define SELECT_SIZE(size)
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#define SELECT_SIZE_ONLY(size)
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#define ACCEPT_SIZE
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#define ACCEPT_SIZE_ONLY
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#define ACCEPT_SIZE_EXPLICIT(size)
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#define SELECT_SIZE_ENDIAN_NAME(size, big_endian) <size, big_endian>
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#define SELECT_SIZE_ENDIAN(size, big_endian)
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#define SELECT_SIZE_ENDIAN_ONLY(size, big_endian)
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#define ACCEPT_SIZE_ENDIAN
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#define ACCEPT_SIZE_ENDIAN_ONLY
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#define ACCEPT_SIZE_ENDIAN_EXPLICIT(size, big_endian)
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#else // !defined(HAVE_MEMBER_TEMPLATE_SPECIFICATIONS)
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template<int size>
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class Select_size { };
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template<int size, bool big_endian>
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class Select_size_endian { };
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#define SELECT_SIZE_NAME(size)
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#define SELECT_SIZE(size) , Select_size<size>()
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#define SELECT_SIZE_ONLY(size) Select_size<size>()
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#define ACCEPT_SIZE , Select_size<size>
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#define ACCEPT_SIZE_ONLY Select_size<size>
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#define ACCEPT_SIZE_EXPLICIT(size) , Select_size<size>
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#define SELECT_SIZE_ENDIAN_NAME(size, big_endian)
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#define SELECT_SIZE_ENDIAN(size, big_endian) \
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, Select_size_endian<size, big_endian>()
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#define SELECT_SIZE_ENDIAN_ONLY(size, big_endian) \
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Select_size_endian<size, big_endian>()
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#define ACCEPT_SIZE_ENDIAN , Select_size_endian<size, big_endian>
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#define ACCEPT_SIZE_ENDIAN_ONLY Select_size_endian<size, big_endian>
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#define ACCEPT_SIZE_ENDIAN_EXPLICIT(size, big_endian) \
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, Select_size_endian<size, big_endian>
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#endif // !defined(HAVE_MEMBER_TEMPLATE_SPECIFICATIONS)
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} // End namespace gold.
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namespace gold
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{
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class General_options;
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class Command_line;
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class Input_argument_list;
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class Dirsearch;
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class Input_objects;
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class Symbol_table;
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class Layout;
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class Workqueue;
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class Output_file;
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// The name of the program as used in error messages.
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extern const char* program_name;
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// This function is called to exit the program. Status is true to
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// exit success (0) and false to exit failure (1).
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extern void
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gold_exit(bool status) ATTRIBUTE_NORETURN;
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// This function is called to emit an unexpected error message and a
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// newline, and then exit with failure. If PERRNO is true, it reports
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// the error in errno.
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extern void
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gold_fatal(const char* msg, bool perrno) ATTRIBUTE_NORETURN;
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// This is function is called in some cases if we run out of memory.
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extern void
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gold_nomem() ATTRIBUTE_NORETURN;
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// This macro and function are used in cases which can not arise if
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// the code is written correctly.
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#define gold_unreachable() \
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(gold::do_gold_unreachable(__FILE__, __LINE__, __FUNCTION__))
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extern void do_gold_unreachable(const char*, int, const char*)
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ATTRIBUTE_NORETURN;
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// Assertion check.
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#define gold_assert(expr) ((void)(!(expr) ? gold_unreachable(), 0 : 0))
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// Queue up the first set of tasks.
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extern void
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queue_initial_tasks(const General_options&,
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const Dirsearch&,
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const Command_line&,
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Workqueue*,
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Input_objects*,
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Symbol_table*,
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Layout*);
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// Queue up the middle set of tasks.
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extern void
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queue_middle_tasks(const General_options&,
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const Input_objects*,
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Symbol_table*,
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Layout*,
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Workqueue*);
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// Queue up the final set of tasks.
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extern void
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queue_final_tasks(const General_options&,
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const Input_objects*,
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const Symbol_table*,
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const Layout*,
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Workqueue*,
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Output_file* of);
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} // End namespace gold.
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#endif // !defined(GOLD_GOLD_H)
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