From b8f73826affc116fb69690633d14fbc5d7fbfc0d Mon Sep 17 00:00:00 2001 From: Andreas Schwab Date: Wed, 15 Aug 2001 16:00:45 +0000 Subject: [PATCH] configure.target (cpu_include_dir): Set to `config/cpu/m68k' for m68k and m680[246]0. * 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 --- libstdc++-v3/ChangeLog | 4 ++ libstdc++-v3/config/cpu/m68k/bits/atomicity.h | 61 +++++++++++++++++++++++++++ 2 files changed, 65 insertions(+) create mode 100644 libstdc++-v3/config/cpu/m68k/bits/atomicity.h diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog index cfb754f..84bf38c 100644 --- a/libstdc++-v3/ChangeLog +++ b/libstdc++-v3/ChangeLog @@ -1,5 +1,9 @@ 2001-08-15 Andreas Schwab + * 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. diff --git a/libstdc++-v3/config/cpu/m68k/bits/atomicity.h b/libstdc++-v3/config/cpu/m68k/bits/atomicity.h new file mode 100644 index 0000000..1377ee1 --- /dev/null +++ b/libstdc++-v3/config/cpu/m68k/bits/atomicity.h @@ -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 */ + + -- 2.7.4