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-rw-r--r--libstdc++-v3/config/cpu/sparc/atomic_word.h48
-rw-r--r--libstdc++-v3/config/cpu/sparc/atomicity.h125
2 files changed, 173 insertions, 0 deletions
diff --git a/libstdc++-v3/config/cpu/sparc/atomic_word.h b/libstdc++-v3/config/cpu/sparc/atomic_word.h
new file mode 100644
index 000000000..41e7bd4df
--- /dev/null
+++ b/libstdc++-v3/config/cpu/sparc/atomic_word.h
@@ -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
+// <http://www.gnu.org/licenses/>.
+
+#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
diff --git a/libstdc++-v3/config/cpu/sparc/atomicity.h b/libstdc++-v3/config/cpu/sparc/atomicity.h
new file mode 100644
index 000000000..c032e540e
--- /dev/null
+++ b/libstdc++-v3/config/cpu/sparc/atomicity.h
@@ -0,0 +1,125 @@
+// 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
+// <http://www.gnu.org/licenses/>.
+
+#include <ext/atomicity.h>
+
+namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+#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<int __inst>
+ struct _Atomicity_lock
+ {
+ static unsigned char _S_atomicity_lock;
+ };
+
+ template<int __inst>
+ 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_VERSION
+} // namespace