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Commit 85ab9d23 by Benjamin Kosnik Committed by Benjamin Kosnik
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re PR libstdc++/7926 (i486 instructions in header files make c++ programs crash on i386) 


2002-11-01  Benjamin Kosnik  <bkoz@redhat.com>

	PR libstdc++/7926
	* configure.target: Simplify.
	* config/cpu/i386/atomicity.h: Remove.
	* config/cpu/i386: Remove.
	* config/cpu/arm/atomicity.h: Remove.
	* config/cpu/arm: Remove.
	* config/cpu/x86-64/atomicity.h: Remove.
	* config/cpu/x86-64: Remove.

From-SVN: r58735
parent bec80a45
Showing with 17 additions and 199 deletions
libstdc++-v3/ChangeLog
2002-11-01 Benjamin Kosnik <bkoz@redhat.com>
PR libstdc++/7926
* configure.target: Simplify.
* config/cpu/i386/atomicity.h: Remove.
* config/cpu/i386: Remove.
* config/cpu/arm/atomicity.h: Remove.
* config/cpu/arm: Remove.
* config/cpu/x86-64/atomicity.h: Remove.
* config/cpu/x86-64: Remove.
2002-11-01 Christian Ehrhardt <ehrhardt@mathematik.uni-ulm.de> 2002-11-01 Christian Ehrhardt <ehrhardt@mathematik.uni-ulm.de>
PR libstdc++/8197 PR libstdc++/8197
......
libstdc++-v3/config/cpu/arm/atomicity.h deleted 100644 → 0
// Low-level functions for atomic operations: ARM version -*- C++ -*-
// Copyright (C) 2000, 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;
/* It isn't possible to write an atomic add instruction using the ARM
SWP instruction without using either a global guard variable or a
guard bit somewhere in the Atomic word. However, even with a guard
bit we need to understand the thread model (if any) in order to
make co-operatively threaded applications work correctly.
The previous Thumb-based implementations were also completely
broken, since they failed to switch back into Thumb mode (Gas bug,
I think). */
static inline _Atomic_word
__attribute__ ((__unused__))
__exchange_and_add (volatile _Atomic_word* __mem, int __val)
{
_Atomic_word __result = *__mem;
*__mem = __result + __val;
return __result;
}
static inline void
__attribute__ ((__unused__))
__atomic_add (volatile _Atomic_word *__mem, int __val)
{
__exchange_and_add (__mem, __val);
}
#endif /* atomicity.h */
libstdc++-v3/config/cpu/i386/atomicity.h deleted 100644 → 0
// Low-level functions for atomic operations: x86, x < 4 version -*- C++ -*-
// Copyright (C) 1999, 2000, 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;
__asm__ __volatile__ ("lock; xaddl %0,%2"
: "=r" (__result)
: "0" (__val), "m" (*__mem)
: "memory");
return __result;
}
static inline void
__attribute__ ((__unused__))
__atomic_add (volatile _Atomic_word* __mem, int __val)
{
__asm__ __volatile__ ("lock; addl %0,%1"
: : "ir" (__val), "m" (*__mem) : "memory");
}
#endif /* atomicity.h */
libstdc++-v3/config/cpu/x86-64/atomicity.h deleted 100644 → 0
// Low-level functions for atomic operations: AMD x86-64, -*- 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;
__asm__ __volatile__ ("lock; xaddl %0,%2"
: "=r" (__result)
: "0" (__val), "m" (*__mem)
: "memory");
return __result;
}
static inline void
__attribute__ ((__unused__))
__atomic_add (volatile _Atomic_word* __mem, int __val)
{
__asm__ __volatile__ ("lock; addl %0,%1"
: : "ir" (__val), "m" (*__mem) : "memory");
}
#endif /* atomicity.h */
libstdc++-v3/configure.target
...@@ -50,17 +50,15 @@ ...@@ -50,17 +50,15 @@
# Try to guess a default cpu_include_dir based on the name of the CPU. We # Try to guess a default cpu_include_dir based on the name of the CPU. We
# cannot do this for os_include_dir; there are too many portable operating # cannot do this for os_include_dir; there are too many portable operating
# systems out there. :-) # systems out there. :-)
abi_baseline_triplet=${target}
c_model=c_std
c_compatibility=no
if test -d ${glibcpp_srcdir}/config/cpu/${target_cpu}; then if test -d ${glibcpp_srcdir}/config/cpu/${target_cpu}; then
cpu_include_dir="cpu/${target_cpu}" cpu_include_dir="cpu/${target_cpu}"
else else
cpu_include_dir="cpu/generic" cpu_include_dir="cpu/generic"
fi fi
abi_baseline_triplet=${target}
c_model=c_std
c_compatibility=no
# TARGET-SPECIFIC OVERRIDES # TARGET-SPECIFIC OVERRIDES
# Set any CPU-dependent bits. # Set any CPU-dependent bits.
...@@ -71,36 +69,21 @@ case "${target_cpu}" in ...@@ -71,36 +69,21 @@ case "${target_cpu}" in
alpha*) alpha*)
cpu_include_dir="cpu/alpha" cpu_include_dir="cpu/alpha"
;; ;;
arm* | strongarm* | xscale* ) athlon* | i586 | i686 | i786 | x86_64)
cpu_include_dir="cpu/arm"
;;
i486 | i586 | i686 | i786)
# add athlons here maybe
cpu_include_dir="cpu/i486" cpu_include_dir="cpu/i486"
;; ;;
m68k | m680[246]0) m680[246]0)
cpu_include_dir="cpu/m68k" cpu_include_dir="cpu/m68k"
;; ;;
mips*)
# MIPS chips are unreliable as to sc/ll support. By default
# don't use atomic instructions and override for the OS.
cpu_include_dir="cpu/generic"
;;
mmix)
ATOMICITYH="cpu/generic"
;;
powerpc* | rs6000) powerpc* | rs6000)
cpu_include_dir="cpu/powerpc" cpu_include_dir="cpu/powerpc"
;; ;;
s390 | s390x) s390x)
cpu_include_dir="cpu/s390" cpu_include_dir="cpu/s390"
;; ;;
sparc* | ultrasparc) sparc* | ultrasparc)
cpu_include_dir="cpu/sparc" cpu_include_dir="cpu/sparc"
;; ;;
x86_64*)
cpu_include_dir="cpu/x86-64"
;;
esac esac
......
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