GCC 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
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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 GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+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.
-/* As a special exception, if you link this library with other files,
- some of which are compiled with GCC, to produce an executable,
- this library 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. */
+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 GCC_GTHR_VXWORKS_H
#define GCC_GTHR_VXWORKS_H
typedef struct
{
-#ifndef __RTP__
+#if !defined(__RTP__)
+#if defined(__PPC__)
+ __attribute ((aligned (__alignof (unsigned))))
+#endif
volatile unsigned char busy;
#endif
volatile unsigned char done;
+#if !defined(__RTP__) && defined(__PPC__)
+ /* PPC's test-and-set implementation requires a 4 byte aligned
+ object, of which it only sets the first byte. We use padding
+ here, in order to maintain some amount of backwards
+ compatibility. Without this padding, gthread_once objects worked
+ by accident because they happen to be static objects and the ppc
+ port automatically increased their alignment to 4 bytes. */
+ unsigned char pad1;
+ unsigned char pad2;
+#endif
}
__gthread_once_t;
-#ifndef __RTP__
-# define __GTHREAD_ONCE_INIT { 0, 0 }
-#else
+#if defined (__RTP__)
# define __GTHREAD_ONCE_INIT { 0 }
+#elif defined (__PPC__)
+# define __GTHREAD_ONCE_INIT { 0, 0, 0, 0 }
+#else
+# define __GTHREAD_ONCE_INIT { 0, 0 }
#endif
extern int __gthread_once (__gthread_once_t *__once, void (*__func)(void));