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configure.target (cpu_include_dir): Set to `config/cpu/m68k' for m68k and m680[246]0.

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* configure.target (cpu_include_dir): Set to `config/cpu/m68k' for
	m68k and m680[246]0.
	* config/cpu/m68k/bits/atomicity.h: New file.

From-SVN: r44925
This commit is contained in:
Andreas Schwab 2001-08-15 16:00:45 +00:00 committed by Andreas Schwab
parent 2e0aa8179f
commit b8f73826af
2 changed files with 65 additions and 0 deletions
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4
libstdc++-v3/ChangeLog
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@ -1,5 +1,9 @@
2001-08-15 Andreas Schwab <schwab@suse.de>
* configure.target (cpu_include_dir): Set to `config/cpu/m68k' for
m68k and m680[246]0.
* config/cpu/m68k/bits/atomicity.h: New file.
* include/bits/std_limits.h [__glibcpp_long_double_bits == 96]:
Define appropriate long double limits for m68k extended floating
point.

61
libstdc++-v3/config/cpu/m68k/bits/atomicity.h Normal file
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@ -0,0 +1,61 @@
// Low-level functions for atomic operations: m680x0, x >= 2 version -*- C++ -*-
// Copyright (C) 2001 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library 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 2, or (at your option)
// any later version.
// This library 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 library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#ifndef _BITS_ATOMICITY_H
#define _BITS_ATOMICITY_H 1
typedef int _Atomic_word;
static inline _Atomic_word
__attribute__ ((__unused__))
__exchange_and_add (volatile _Atomic_word *__mem, int __val)
{
register _Atomic_word __result = *__mem;
register _Atomic_word __temp;
__asm__ __volatile__ ("1: move%.l %0,%1;"
" add%.l %2,%1;"
" cas%.l %0,%1,%3;"
" jbne 1b"
: "=d" (__result), "=&d" (__temp)
: "d" (__val), "m" (*__mem), "0" (__result)
: "memory");
return __result;
}
static inline void
__attribute__ ((__unused__))
__atomic_add (volatile _Atomic_word* __mem, int __val)
{
__asm__ __volatile__ ("add%.l %0,%1"
: : "id" (__val), "m" (*__mem) : "memory");
}
#endif /* atomicity.h */