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- This comparison shows the changes necessary to convert path
/openrisc/tags/gnu-src/gcc-4.5.1/gcc-4.5.1-or32-1.0rc4/libstdc++-v3/config/cpu
- from Rev 424 to Rev 519
- ↔ Reverse comparison
Rev 424 → Rev 519
/arm/cxxabi_tweaks.h
0,0 → 1,81
// Control various target specific ABI tweaks. ARM version. |
|
// Copyright (C) 2004, 2006, 2008, 2009 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 3, 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. |
|
// Under Section 7 of GPL version 3, you are granted additional |
// permissions described in the GCC Runtime Library Exception, version |
// 3.1, as published by the Free Software Foundation. |
|
// You should have received a copy of the GNU General Public License and |
// a copy of the GCC Runtime Library Exception along with this program; |
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
// <http://www.gnu.org/licenses/>. |
|
/** @file cxxabi_tweaks.h |
* The header provides an CPU-variable interface to the C++ ABI. |
*/ |
|
#ifndef _CXXABI_TWEAKS_H |
#define _CXXABI_TWEAKS_H 1 |
|
#ifdef __cplusplus |
namespace __cxxabiv1 |
{ |
extern "C" |
{ |
#endif |
|
#ifdef __ARM_EABI__ |
// The ARM EABI uses the least significant bit of a 32-bit |
// guard variable. */ |
#define _GLIBCXX_GUARD_TEST(x) ((*(x) & 1) != 0) |
#define _GLIBCXX_GUARD_SET(x) *(x) = 1 |
#define _GLIBCXX_GUARD_BIT 1 |
#define _GLIBCXX_GUARD_PENDING_BIT __guard_test_bit (1, 1) |
#define _GLIBCXX_GUARD_WAITING_BIT __guard_test_bit (2, 1) |
typedef int __guard; |
|
// We also want the element size in array cookies. |
#define _GLIBCXX_ELTSIZE_IN_COOKIE 1 |
|
// __cxa_vec_ctor should return a pointer to the array. |
typedef void * __cxa_vec_ctor_return_type; |
#define _GLIBCXX_CXA_VEC_CTOR_RETURN(x) return x |
// Constructors and destructors return the "this" pointer. |
typedef void * __cxa_cdtor_return_type; |
|
#else // __ARM_EABI__ |
|
// The generic ABI uses the first byte of a 64-bit guard variable. |
#define _GLIBCXX_GUARD_TEST(x) (*(char *) (x) != 0) |
#define _GLIBCXX_GUARD_SET(x) *(char *) (x) = 1 |
#define _GLIBCXX_GUARD_BIT __guard_test_bit (0, 1) |
#define _GLIBCXX_GUARD_PENDING_BIT __guard_test_bit (1, 1) |
#define _GLIBCXX_GUARD_WAITING_BIT __guard_test_bit (2, 1) |
__extension__ typedef int __guard __attribute__((mode (__DI__))); |
|
// __cxa_vec_ctor has void return type. |
typedef void __cxa_vec_ctor_return_type; |
#define _GLIBCXX_CXA_VEC_CTOR_RETURN(x) return |
// Constructors and destructors do not return a value. |
typedef void __cxa_cdtor_return_type; |
|
#endif //!__ARM_EABI__ |
|
#ifdef __cplusplus |
} |
} // namespace __cxxabiv1 |
#endif |
|
#endif |
arm/cxxabi_tweaks.h
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Index: powerpc/cpu_defines.h
===================================================================
--- powerpc/cpu_defines.h (nonexistent)
+++ powerpc/cpu_defines.h (revision 519)
@@ -0,0 +1,36 @@
+// Specific definitions for generic platforms -*- C++ -*-
+
+// Copyright (C) 2005, 2009 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+/** @file cpu_defines.h
+ * This is an internal header file, included by other library headers.
+ * You should not attempt to use it directly.
+ */
+
+#ifndef _GLIBCXX_CPU_DEFINES
+#define _GLIBCXX_CPU_DEFINES 1
+
+// Integer divide instructions don't trap on PowerPC.
+#define __glibcxx_integral_traps false
+
+#endif
powerpc/cpu_defines.h
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Index: powerpc/atomic_word.h
===================================================================
--- powerpc/atomic_word.h (nonexistent)
+++ powerpc/atomic_word.h (revision 519)
@@ -0,0 +1,37 @@
+// Low-level type for atomic operations -*- C++ -*-
+
+// Copyright (C) 2004, 2009 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+#ifndef _GLIBCXX_ATOMIC_WORD_H
+#define _GLIBCXX_ATOMIC_WORD_H 1
+
+typedef int _Atomic_word;
+
+#define _GLIBCXX_READ_MEM_BARRIER __asm __volatile ("isync":::"memory")
+#ifdef __NO_LWSYNC__
+#define _GLIBCXX_WRITE_MEM_BARRIER __asm __volatile ("sync":::"memory")
+#else
+#define _GLIBCXX_WRITE_MEM_BARRIER __asm __volatile ("lwsync":::"memory")
+#endif
+
+#endif
powerpc/atomic_word.h
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Index: cris/atomicity.h
===================================================================
--- cris/atomicity.h (nonexistent)
+++ cris/atomicity.h (revision 519)
@@ -0,0 +1,86 @@
+// Low-level functions for atomic operations: CRIS version -*- C++ -*-
+
+// Copyright (C) 2001, 2003, 2004, 2005, 2009 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+#include
+
+_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
+
+ _Atomic_word
+ __exchange_and_add(volatile _Atomic_word* __mem, int __val) throw ()
+ {
+ int __tmp;
+ _Atomic_word __result;
+
+#if (__CRIS_arch_version >= 32)
+ __asm__ __volatile__ (" clearf p \n"
+ "0: \n"
+ " move.d %4,%2 \n"
+ " move.d [%3],%0 \n"
+ " add.d %0,%2 \n"
+ " ax \n"
+ " move.d %2,[%3] \n"
+ " bcs 0b \n"
+ " clearf p \n"
+ : "=&r" (__result), "=Q" (*__mem), "=&r" (__tmp)
+ : "r" (__mem), "g" (__val), "Q" (*__mem)
+ : "memory");
+#elif (__CRIS_arch_version >= 10)
+ __asm__ __volatile__ (" clearf \n"
+ "0: \n"
+ " move.d %4,%2 \n"
+ " move.d [%3],%0 \n"
+ " add.d %0,%2 \n"
+ " ax \n"
+ " move.d %2,[%3] \n"
+ " bwf 0b \n"
+ " clearf \n"
+ : "=&r" (__result), "=Q" (*__mem), "=&r" (__tmp)
+ : "r" (__mem), "g" (__val), "Q" (*__mem)
+ /* The memory clobber must stay, regardless of
+ current uses of this function. */
+ : "memory");
+#else
+ __asm__ __volatile__ (" move $ccr,$r9 \n"
+ " di \n"
+ " move.d %4,%2 \n"
+ " move.d [%3],%0 \n"
+ " add.d %0,%2 \n"
+ " move.d %2,[%3] \n"
+ " move $r9,$ccr \n"
+ : "=&r" (__result), "=Q" (*__mem), "=&r" (__tmp)
+ : "r" (__mem), "g" (__val), "Q" (*__mem)
+ : "r9",
+ /* The memory clobber must stay, regardless of
+ current uses of this function. */
+ "memory");
+#endif
+
+ return __result;
+ }
+
+ void
+ __atomic_add(volatile _Atomic_word* __mem, int __val) throw ()
+ { __exchange_and_add(__mem, __val); }
+
+_GLIBCXX_END_NAMESPACE
cris/atomicity.h
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Index: cris/atomic_word.h
===================================================================
--- cris/atomic_word.h (nonexistent)
+++ cris/atomic_word.h (revision 519)
@@ -0,0 +1,31 @@
+// Low-level type for atomic operations -*- C++ -*-
+
+// Copyright (C) 2004, 2009 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+#ifndef _GLIBCXX_ATOMIC_WORD_H
+#define _GLIBCXX_ATOMIC_WORD_H 1
+
+// This entity must not cross a page boundary.
+typedef int _Atomic_word __attribute__ ((__aligned__ (4)));
+
+#endif
cris/atomic_word.h
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Index: ia64/atomic_word.h
===================================================================
--- ia64/atomic_word.h (nonexistent)
+++ ia64/atomic_word.h (revision 519)
@@ -0,0 +1,64 @@
+// Low-level type for atomic operations -*- C++ -*-
+
+// Copyright (C) 2004, 2005, 2006, 2007, 2009 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+#ifndef _GLIBCXX_ATOMIC_WORD_H
+#define _GLIBCXX_ATOMIC_WORD_H 1
+
+#include
+
+typedef int _Atomic_word;
+
+namespace __gnu_cxx
+{
+ // Test the first byte of __g and ensure that no loads are hoisted across
+ // the test.
+ inline bool
+ __test_and_acquire (__cxxabiv1::__guard *__g)
+ {
+ unsigned char __c;
+ unsigned char *__p = reinterpret_cast(__g);
+ // ldN.acq is a load with an implied hoist barrier.
+ // would ld8+mask be faster than just doing an ld1?
+ __asm __volatile ("ld1.acq %0 = %1" : "=r"(__c) : "m"(*__p) : "memory");
+ return __c != 0;
+ }
+
+ // Set the first byte of __g to 1 and ensure that no stores are sunk
+ // across the store.
+ inline void
+ __set_and_release (__cxxabiv1::__guard *__g)
+ {
+ unsigned char *__p = reinterpret_cast(__g);
+ // stN.rel is a store with an implied sink barrier.
+ // could load word, set flag, and CAS it back
+ __asm __volatile ("st1.rel %0 = %1" : "=m"(*__p) : "r"(1) : "memory");
+ }
+
+ // We don't define the _BARRIER macros on ia64 because the barriers are
+ // included in the test and set, above.
+#define _GLIBCXX_GUARD_TEST_AND_ACQUIRE(G) __gnu_cxx::__test_and_acquire (G)
+#define _GLIBCXX_GUARD_SET_AND_RELEASE(G) __gnu_cxx::__set_and_release (G)
+}
+
+#endif
ia64/atomic_word.h
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Index: alpha/atomic_word.h
===================================================================
--- alpha/atomic_word.h (nonexistent)
+++ alpha/atomic_word.h (revision 519)
@@ -0,0 +1,33 @@
+// Low-level type for atomic operations -*- C++ -*-
+
+// Copyright (C) 2004, 2009 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+#ifndef _GLIBCXX_ATOMIC_WORD_H
+#define _GLIBCXX_ATOMIC_WORD_H 1
+
+typedef int _Atomic_word;
+
+#define _GLIBCXX_READ_MEM_BARRIER __asm __volatile ("mb":::"memory")
+#define _GLIBCXX_WRITE_MEM_BARRIER __asm __volatile ("wmb":::"memory")
+
+#endif
alpha/atomic_word.h
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Index: m68k/atomicity.h
===================================================================
--- m68k/atomicity.h (nonexistent)
+++ m68k/atomicity.h (revision 519)
@@ -0,0 +1,129 @@
+// Low-level functions for atomic operations: m68k version -*- C++ -*-
+
+// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2009 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+#include
+
+_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
+
+#if ( defined(__mc68020__) || defined(__mc68030__) \
+ || defined(__mc68040__) || defined(__mc68060__) ) \
+ && !defined(__mcpu32__)
+ // These variants support compare-and-swap.
+ _Atomic_word
+ __attribute__ ((__unused__))
+ __exchange_and_add(volatile _Atomic_word* __mem, int __val) throw ()
+ {
+ register _Atomic_word __result = *__mem;
+ register _Atomic_word __temp;
+ __asm__ __volatile__ ("1: move%.l %0,%1\n\t"
+ "add%.l %3,%1\n\t"
+ "cas%.l %0,%1,%2\n\t"
+ "jne 1b"
+ : "=d" (__result), "=&d" (__temp), "=m" (*__mem)
+ : "d" (__val), "0" (__result), "m" (*__mem));
+ return __result;
+ }
+
+#elif defined(__rtems__)
+ // TAS/JBNE is unsafe on systems with strict priority-based scheduling.
+ // Disable interrupts, which we can do only from supervisor mode.
+ _Atomic_word
+ __attribute__ ((__unused__))
+ __exchange_and_add(volatile _Atomic_word* __mem, int __val) throw ()
+ {
+ _Atomic_word __result;
+ short __level, __tmpsr;
+ __asm__ __volatile__ ("move%.w %%sr,%0\n\tor%.l %0,%1\n\tmove%.w %1,%%sr"
+ : "=d"(__level), "=d"(__tmpsr) : "1"(0x700));
+
+ __result = *__mem;
+ *__mem = __result + __val;
+ __asm__ __volatile__ ("move%.w %0,%%sr" : : "d"(__level));
+
+ return __result;
+ }
+
+#else
+
+ template
+ struct _Atomicity_lock
+ {
+ static volatile unsigned char _S_atomicity_lock;
+ };
+
+ template
+ volatile unsigned char _Atomicity_lock<__inst>::_S_atomicity_lock = 0;
+
+ template volatile unsigned char _Atomicity_lock<0>::_S_atomicity_lock;
+
+ _Atomic_word
+ __attribute__ ((__unused__))
+ __exchange_and_add(volatile _Atomic_word* __mem, int __val) throw ()
+ {
+ _Atomic_word __result;
+
+ // bset with no immediate addressing (not SMP-safe)
+#if defined(__mcfisaa__) || defined(__mcfisaaplus__)
+ __asm__ __volatile__("1: bset.b #7,%0@\n\tjbne 1b"
+ : /* no outputs */
+ : "a"(&_Atomicity_lock<0>::_S_atomicity_lock)
+ : "cc", "memory");
+
+ // CPU32 and CF ISAs B & C support test-and-set (SMP-safe).
+#elif defined(__mcpu32__) || defined(__mcfisab__) || defined (__mcfisac__)
+ __asm__ __volatile__("1: tas %0\n\tjbne 1b"
+ : "+m"(_Atomicity_lock<0>::_S_atomicity_lock)
+ : /* none */
+ : "cc");
+
+ // Use bset with immediate addressing for 68000/68010 (not SMP-safe)
+ // NOTE: TAS is available on the 68000, but unsupported by some Amiga
+ // memory controllers.
+#else
+ __asm__ __volatile__("1: bset.b #7,%0\n\tjbne 1b"
+ : "+m"(_Atomicity_lock<0>::_S_atomicity_lock)
+ : /* none */
+ : "cc");
+#endif
+
+ __result = *__mem;
+ *__mem = __result + __val;
+
+ _Atomicity_lock<0>::_S_atomicity_lock = 0;
+
+ return __result;
+ }
+
+#endif /* TAS / BSET */
+
+ void
+ __attribute__ ((__unused__))
+ __atomic_add(volatile _Atomic_word* __mem, int __val) throw ()
+ {
+ // Careful: using add.l with a memory destination is not
+ // architecturally guaranteed to be atomic.
+ __exchange_and_add(__mem, __val);
+ }
+
+_GLIBCXX_END_NAMESPACE
m68k/atomicity.h
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Index: hppa/atomicity.h
===================================================================
--- hppa/atomicity.h (nonexistent)
+++ hppa/atomicity.h (revision 519)
@@ -0,0 +1,91 @@
+// Low-level functions for atomic operations: PA-RISC version -*- C++ -*-
+
+// Copyright (C) 2002, 2004, 2005, 2009 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+#include
+#include
+
+_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
+
+ template
+ struct _Atomicity_lock
+ {
+ static volatile int _S_atomicity_lock;
+ };
+
+ template
+ volatile int
+ _Atomicity_lock<_Inst>::_S_atomicity_lock __attribute__ ((aligned (16))) = 1;
+
+ // Because of the lack of weak support when using the hpux som
+ // linker, we explicitly instantiate the atomicity lock.
+ template volatile int _Atomicity_lock<0>::_S_atomicity_lock;
+
+ int
+ __attribute__ ((__unused__))
+ __exchange_and_add(volatile _Atomic_word* __mem, int __val) throw ()
+ {
+ _Atomic_word result;
+ int tmp;
+ volatile int& lock = _Atomicity_lock<0>::_S_atomicity_lock;
+
+ __asm__ __volatile__ ("ldcw 0(%1),%0\n\t"
+ "cmpib,<>,n 0,%0,.+20\n\t"
+ "ldw 0(%1),%0\n\t"
+ "cmpib,= 0,%0,.-4\n\t"
+ "nop\n\t"
+ "b,n .-20"
+ : "=&r" (tmp)
+ : "r" (&lock)
+ : "memory");
+
+ result = *__mem;
+ *__mem = result + __val;
+ __asm__ __volatile__ ("stw %1,0(%0)"
+ : : "r" (&lock), "r" (tmp) : "memory");
+ return result;
+ }
+
+ void
+ __attribute__ ((__unused__))
+ __atomic_add(volatile _Atomic_word* __mem, int __val) throw ()
+ {
+ int tmp;
+ volatile int& lock = _Atomicity_lock<0>::_S_atomicity_lock;
+
+ __asm__ __volatile__ ("ldcw 0(%1),%0\n\t"
+ "cmpib,<>,n 0,%0,.+20\n\t"
+ "ldw 0(%1),%0\n\t"
+ "cmpib,= 0,%0,.-4\n\t"
+ "nop\n\t"
+ "b,n .-20"
+ : "=&r" (tmp)
+ : "r" (&lock)
+ : "memory");
+
+ *__mem += __val;
+ __asm__ __volatile__ ("stw %1,0(%0)"
+ : : "r" (&lock), "r" (tmp) : "memory");
+ }
+
+_GLIBCXX_END_NAMESPACE
hppa/atomicity.h
Property changes :
Added: svn:eol-style
## -0,0 +1 ##
+native
\ No newline at end of property
Added: svn:keywords
## -0,0 +1 ##
+Id
\ No newline at end of property
Index: sparc/atomicity.h
===================================================================
--- sparc/atomicity.h (nonexistent)
+++ sparc/atomicity.h (revision 519)
@@ -0,0 +1,122 @@
+// Low-level functions for atomic operations: Sparc version -*- C++ -*-
+
+// Copyright (C) 1999, 2000, 2001, 2002, 2004, 2005, 2009
+// 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+#include
+
+_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
+
+#ifdef __arch64__
+ _Atomic_word
+ __attribute__ ((__unused__))
+ __exchange_and_add(volatile _Atomic_word* __mem, int __val) throw ()
+ {
+ _Atomic_word __tmp1, __tmp2;
+ _Atomic_word __val_extended = __val;
+
+ __asm__ __volatile__("1: ldx [%3], %0\n\t"
+ " add %0, %4, %1\n\t"
+ " casx [%3], %0, %1\n\t"
+ " sub %0, %1, %0\n\t"
+ " brnz,pn %0, 1b\n\t"
+ " nop"
+ : "=&r" (__tmp1), "=&r" (__tmp2), "=m" (*__mem)
+ : "r" (__mem), "r" (__val_extended), "m" (*__mem));
+ return __tmp2;
+ }
+
+ void
+ __attribute__ ((__unused__))
+ __atomic_add(volatile _Atomic_word* __mem, int __val) throw ()
+ {
+ _Atomic_word __tmp1, __tmp2;
+ _Atomic_word __val_extended = __val;
+
+ __asm__ __volatile__("1: ldx [%3], %0\n\t"
+ " add %0, %4, %1\n\t"
+ " casx [%3], %0, %1\n\t"
+ " sub %0, %1, %0\n\t"
+ " brnz,pn %0, 1b\n\t"
+ " nop"
+ : "=&r" (__tmp1), "=&r" (__tmp2), "=m" (*__mem)
+ : "r" (__mem), "r" (__val_extended), "m" (*__mem));
+ }
+
+#else /* __arch32__ */
+
+ template
+ struct _Atomicity_lock
+ {
+ static unsigned char _S_atomicity_lock;
+ };
+
+ template
+ unsigned char _Atomicity_lock<__inst>::_S_atomicity_lock = 0;
+
+ template unsigned char _Atomicity_lock<0>::_S_atomicity_lock;
+
+ _Atomic_word
+ __attribute__ ((__unused__))
+ __exchange_and_add(volatile _Atomic_word* __mem, int __val) throw ()
+ {
+ _Atomic_word __result, __tmp;
+
+ __asm__ __volatile__("1: ldstub [%1], %0\n\t"
+ " cmp %0, 0\n\t"
+ " bne 1b\n\t"
+ " nop"
+ : "=&r" (__tmp)
+ : "r" (&_Atomicity_lock<0>::_S_atomicity_lock)
+ : "memory");
+ __result = *__mem;
+ *__mem += __val;
+ __asm__ __volatile__("stb %%g0, [%0]"
+ : /* no outputs */
+ : "r" (&_Atomicity_lock<0>::_S_atomicity_lock)
+ : "memory");
+ return __result;
+ }
+
+ void
+ __attribute__ ((__unused__))
+ __atomic_add(volatile _Atomic_word* __mem, int __val) throw ()
+ {
+ _Atomic_word __tmp;
+
+ __asm__ __volatile__("1: ldstub [%1], %0\n\t"
+ " cmp %0, 0\n\t"
+ " bne 1b\n\t"
+ " nop"
+ : "=&r" (__tmp)
+ : "r" (&_Atomicity_lock<0>::_S_atomicity_lock)
+ : "memory");
+ *__mem += __val;
+ __asm__ __volatile__("stb %%g0, [%0]"
+ : /* no outputs */
+ : "r" (&_Atomicity_lock<0>::_S_atomicity_lock)
+ : "memory");
+ }
+#endif /* __arch32__ */
+
+_GLIBCXX_END_NAMESPACE
sparc/atomicity.h
Property changes :
Added: svn:eol-style
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+native
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## -0,0 +1 ##
+Id
\ No newline at end of property
Index: sparc/atomic_word.h
===================================================================
--- sparc/atomic_word.h (nonexistent)
+++ sparc/atomic_word.h (revision 519)
@@ -0,0 +1,48 @@
+// Low-level type for atomic operations -*- C++ -*-
+
+// Copyright (C) 2004, 2009 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+#ifndef _GLIBCXX_ATOMIC_WORD_H
+#define _GLIBCXX_ATOMIC_WORD_H 1
+
+#ifdef __arch64__
+ typedef long _Atomic_word;
+#else
+ typedef int _Atomic_word;
+#endif
+
+#if defined(__sparc_v9__)
+// These are necessary under the V9 RMO model, though it is almost never
+// used in userspace.
+#define _GLIBCXX_READ_MEM_BARRIER \
+ __asm __volatile ("membar #LoadLoad":::"memory")
+#define _GLIBCXX_WRITE_MEM_BARRIER \
+ __asm __volatile ("membar #StoreStore":::"memory")
+
+#elif defined(__sparc_v8__)
+// This is necessary under the PSO model.
+#define _GLIBCXX_WRITE_MEM_BARRIER __asm __volatile ("stbar":::"memory")
+
+#endif
+
+#endif
sparc/atomic_word.h
Property changes :
Added: svn:eol-style
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+native
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+Id
\ No newline at end of property
Index: i386/atomicity.h
===================================================================
--- i386/atomicity.h (nonexistent)
+++ i386/atomicity.h (revision 519)
@@ -0,0 +1,70 @@
+// Low-level functions for atomic operations: x86, x >= 3 version -*- C++ -*-
+
+// Copyright (C) 2003, 2004, 2005, 2009 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+#include
+
+_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
+
+ template
+ struct _Atomicity_lock
+ {
+ static volatile _Atomic_word _S_atomicity_lock;
+ };
+
+ template
+ volatile _Atomic_word _Atomicity_lock<__inst>::_S_atomicity_lock = 0;
+
+ template volatile _Atomic_word _Atomicity_lock<0>::_S_atomicity_lock;
+
+ _Atomic_word
+ __attribute__ ((__unused__))
+ __exchange_and_add(volatile _Atomic_word* __mem, int __val) throw ()
+ {
+ register _Atomic_word __result, __tmp = 1;
+
+ // Obtain the atomic exchange/add spin lock.
+ do
+ {
+ __asm__ __volatile__ ("xchg{l} {%0,%1|%1,%0}"
+ : "=m" (_Atomicity_lock<0>::_S_atomicity_lock),
+ "+r" (__tmp)
+ : "m" (_Atomicity_lock<0>::_S_atomicity_lock));
+ }
+ while (__tmp);
+
+ __result = *__mem;
+ *__mem += __val;
+
+ // Release spin lock.
+ _Atomicity_lock<0>::_S_atomicity_lock = 0;
+
+ return __result;
+ }
+
+ void
+ __attribute__ ((__unused__))
+ __atomic_add(volatile _Atomic_word* __mem, int __val) throw ()
+ { __exchange_and_add(__mem, __val); }
+
+_GLIBCXX_END_NAMESPACE
i386/atomicity.h
Property changes :
Added: svn:eol-style
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+native
\ No newline at end of property
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## -0,0 +1 ##
+Id
\ No newline at end of property
Index: i486/atomicity.h
===================================================================
--- i486/atomicity.h (nonexistent)
+++ i486/atomicity.h (revision 519)
@@ -0,0 +1,49 @@
+// Low-level functions for atomic operations: x86, x >= 4 version -*- C++ -*-
+
+// Copyright (C) 1999, 2000, 2001, 2004, 2005, 2009 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+#include
+
+_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
+
+ _Atomic_word
+ __attribute__ ((__unused__))
+ __exchange_and_add(volatile _Atomic_word* __mem, int __val) throw ()
+ {
+ register _Atomic_word __result;
+ __asm__ __volatile__ ("lock; xadd{l} {%0,%1|%1,%0}"
+ : "=r" (__result), "=m" (*__mem)
+ : "0" (__val), "m" (*__mem));
+ return __result;
+ }
+
+ void
+ __attribute__ ((__unused__))
+ __atomic_add(volatile _Atomic_word* __mem, int __val) throw ()
+ {
+ __asm__ __volatile__ ("lock; add{l} {%1,%0|%0,%1}"
+ : "=m" (*__mem) : "ir" (__val), "m" (*__mem));
+ }
+
+_GLIBCXX_END_NAMESPACE
+
i486/atomicity.h
Property changes :
Added: svn:eol-style
## -0,0 +1 ##
+native
\ No newline at end of property
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## -0,0 +1 ##
+Id
\ No newline at end of property
Index: sh/atomicity.h
===================================================================
--- sh/atomicity.h (nonexistent)
+++ sh/atomicity.h (revision 519)
@@ -0,0 +1,103 @@
+// Low-level functions for atomic operations: sh version -*- C++ -*-
+
+// Copyright (C) 1999, 2001, 2002, 2003, 2004, 2005, 2006, 2009
+// 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+#ifdef __SH4A__
+
+#include
+
+_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
+
+ typedef int _Atomic_word;
+
+ _Atomic_word
+ __attribute__ ((__unused__))
+ __exchange_and_add (volatile _Atomic_word* __mem, int __val) throw ()
+ {
+ _Atomic_word __result;
+
+ __asm__ __volatile__
+ ("0:\n"
+ "\tmovli.l\t@%2,r0\n"
+ "\tmov\tr0,%1\n"
+ "\tadd\t%3,r0\n"
+ "\tmovco.l\tr0,@%2\n"
+ "\tbf\t0b"
+ : "+m" (*__mem), "=&r" (__result)
+ : "r" (__mem), "rI08" (__val)
+ : "r0");
+
+ return __result;
+ }
+
+
+ void
+ __attribute__ ((__unused__))
+ __atomic_add (volatile _Atomic_word* __mem, int __val) throw ()
+ {
+ asm("0:\n"
+ "\tmovli.l\t@%1,r0\n"
+ "\tadd\t%2,r0\n"
+ "\tmovco.l\tr0,@%1\n"
+ "\tbf\t0b"
+ : "+m" (*__mem)
+ : "r" (__mem), "rI08" (__val)
+ : "r0");
+ }
+
+_GLIBCXX_END_NAMESPACE
+
+#else /* !__SH4A__ */
+
+/* This is generic/atomicity.h */
+
+#include
+#include
+
+namespace
+{
+ __gnu_cxx::__mutex atomic_mutex;
+} // anonymous namespace
+
+_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
+
+ _Atomic_word
+ __attribute__ ((__unused__))
+ __exchange_and_add(volatile _Atomic_word* __mem, int __val) throw ()
+ {
+ __gnu_cxx::__scoped_lock sentry(atomic_mutex);
+ _Atomic_word __result;
+ __result = *__mem;
+ *__mem += __val;
+ return __result;
+ }
+
+ void
+ __attribute__ ((__unused__))
+ __atomic_add(volatile _Atomic_word* __mem, int __val) throw ()
+ { __exchange_and_add(__mem, __val); }
+
+_GLIBCXX_END_NAMESPACE
+
+#endif /* !__SH4A__ */
sh/atomicity.h
Property changes :
Added: svn:eol-style
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+Id
\ No newline at end of property
Index: generic/cxxabi_tweaks.h
===================================================================
--- generic/cxxabi_tweaks.h (nonexistent)
+++ generic/cxxabi_tweaks.h (revision 519)
@@ -0,0 +1,58 @@
+// Control various target specific ABI tweaks. Generic version.
+
+// Copyright (C) 2004, 2006, 2008, 2009 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+/** @file cxxabi_tweaks.h
+ * The header provides an CPU-variable interface to the C++ ABI.
+ */
+
+#ifndef _CXXABI_TWEAKS_H
+#define _CXXABI_TWEAKS_H 1
+
+#ifdef __cplusplus
+namespace __cxxabiv1
+{
+ extern "C"
+ {
+#endif
+
+ // The generic ABI uses the first byte of a 64-bit guard variable.
+#define _GLIBCXX_GUARD_TEST(x) (*(char *) (x) != 0)
+#define _GLIBCXX_GUARD_SET(x) *(char *) (x) = 1
+#define _GLIBCXX_GUARD_BIT __guard_test_bit (0, 1)
+#define _GLIBCXX_GUARD_PENDING_BIT __guard_test_bit (1, 1)
+#define _GLIBCXX_GUARD_WAITING_BIT __guard_test_bit (2, 1)
+ __extension__ typedef int __guard __attribute__((mode (__DI__)));
+
+ // __cxa_vec_ctor has void return type.
+ typedef void __cxa_vec_ctor_return_type;
+#define _GLIBCXX_CXA_VEC_CTOR_RETURN(x) return
+ // Constructors and destructors do not return a value.
+ typedef void __cxa_cdtor_return_type;
+
+#ifdef __cplusplus
+ }
+} // namespace __cxxabiv1
+#endif
+
+#endif
generic/cxxabi_tweaks.h
Property changes :
Added: svn:eol-style
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+native
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## -0,0 +1 ##
+Id
\ No newline at end of property
Index: generic/atomicity_mutex/atomicity.h
===================================================================
--- generic/atomicity_mutex/atomicity.h (nonexistent)
+++ generic/atomicity_mutex/atomicity.h (revision 519)
@@ -0,0 +1,61 @@
+// Low-level functions for atomic operations: Generic version -*- C++ -*-
+
+// Copyright (C) 1999, 2001, 2002, 2003, 2004, 2005, 2006, 2009
+// 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+/** @file ext/atomicity.h
+ * This file is a GNU extension to the Standard C++ Library.
+ */
+
+#include
+#include
+
+namespace
+{
+ __gnu_cxx::__mutex&
+ get_atomic_mutex()
+ {
+ static __gnu_cxx::__mutex atomic_mutex;
+ return atomic_mutex;
+ }
+} // anonymous namespace
+
+_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
+
+ _Atomic_word
+ __attribute__ ((__unused__))
+ __exchange_and_add(volatile _Atomic_word* __mem, int __val) throw ()
+ {
+ __gnu_cxx::__scoped_lock sentry(get_atomic_mutex());
+ _Atomic_word __result;
+ __result = *__mem;
+ *__mem += __val;
+ return __result;
+ }
+
+ void
+ __attribute__ ((__unused__))
+ __atomic_add(volatile _Atomic_word* __mem, int __val) throw ()
+ { __exchange_and_add(__mem, __val); }
+
+_GLIBCXX_END_NAMESPACE
generic/atomicity_mutex/atomicity.h
Property changes :
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+native
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+Id
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Index: generic/cpu_defines.h
===================================================================
--- generic/cpu_defines.h (nonexistent)
+++ generic/cpu_defines.h (revision 519)
@@ -0,0 +1,33 @@
+// Specific definitions for generic platforms -*- C++ -*-
+
+// Copyright (C) 2005, 2009 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+/** @file cpu_defines.h
+ * This is an internal header file, included by other library headers.
+ * You should not attempt to use it directly.
+ */
+
+#ifndef _GLIBCXX_CPU_DEFINES
+#define _GLIBCXX_CPU_DEFINES 1
+
+#endif
generic/cpu_defines.h
Property changes :
Added: svn:eol-style
## -0,0 +1 ##
+native
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## -0,0 +1 ##
+Id
\ No newline at end of property
Index: generic/atomicity_builtins/atomicity.h
===================================================================
--- generic/atomicity_builtins/atomicity.h (nonexistent)
+++ generic/atomicity_builtins/atomicity.h (revision 519)
@@ -0,0 +1,45 @@
+// Low-level functions for atomic operations: version for CPUs providing
+// atomic builtins -*- C++ -*-
+
+// Copyright (C) 2006, 2009 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+/** @file ext/atomicity.h
+ * This file is a GNU extension to the Standard C++ Library.
+ */
+
+#include
+#include
+
+_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
+
+ _Atomic_word
+ __attribute__ ((__unused__))
+ __exchange_and_add(volatile _Atomic_word* __mem, int __val) throw ()
+ { return __sync_fetch_and_add(__mem, __val); }
+
+ void
+ __attribute__ ((__unused__))
+ __atomic_add(volatile _Atomic_word* __mem, int __val) throw ()
+ { __sync_fetch_and_add(__mem, __val); }
+
+_GLIBCXX_END_NAMESPACE
generic/atomicity_builtins/atomicity.h
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Index: generic/atomic_word.h
===================================================================
--- generic/atomic_word.h (nonexistent)
+++ generic/atomic_word.h (revision 519)
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+// Low-level type for atomic operations -*- C++ -*-
+
+// Copyright (C) 2004, 2009 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+/** @file atomic_word.h
+ * This file is a GNU extension to the Standard C++ Library.
+ */
+
+#ifndef _GLIBCXX_ATOMIC_WORD_H
+#define _GLIBCXX_ATOMIC_WORD_H 1
+
+typedef int _Atomic_word;
+
+// Define these two macros using the appropriate memory barrier for the target.
+// The commented out versions below are the defaults.
+// See ia64/atomic_word.h for an alternative approach.
+
+// This one prevents loads from being hoisted across the barrier;
+// in other words, this is a Load-Load acquire barrier.
+// This is necessary iff TARGET_RELAXED_ORDERING is defined in tm.h.
+// #define _GLIBCXX_READ_MEM_BARRIER __asm __volatile ("":::"memory")
+
+// This one prevents stores from being sunk across the barrier; in other
+// words, a Store-Store release barrier.
+// #define _GLIBCXX_WRITE_MEM_BARRIER __asm __volatile ("":::"memory")
+
+#endif
generic/atomic_word.h
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