diff options
Diffstat (limited to 'libpthread/linuxthreads.old/sysdeps/cris/pt-machine.h')
| -rw-r--r-- | libpthread/linuxthreads.old/sysdeps/cris/pt-machine.h | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/libpthread/linuxthreads.old/sysdeps/cris/pt-machine.h b/libpthread/linuxthreads.old/sysdeps/cris/pt-machine.h index 431da7101..a287e866a 100644 --- a/libpthread/linuxthreads.old/sysdeps/cris/pt-machine.h +++ b/libpthread/linuxthreads.old/sysdeps/cris/pt-machine.h @@ -18,16 +18,10 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#ifndef _PT_MACHINE_H -#define _PT_MACHINE_H 1 - #ifndef PT_EI # define PT_EI extern inline __attribute__ ((always_inline)) #endif -extern long int testandset (int *spinlock); -extern int __compare_and_swap (long int *p, long int oldval, long int newval); - PT_EI long int testandset (int *spinlock) { @@ -35,6 +29,19 @@ testandset (int *spinlock) /* Note the use of a dummy output of *spinlock to expose the write. The memory barrier is to stop *other* writes being moved past this code. */ + +#ifdef __arch_v32 + __asm__ __volatile__("clearf p\n" + "0:\n\t" + "movu.b [%2],%0\n\t" + "ax\n\t" + "move.b %3,[%2]\n\t" + "bcs 0b\n\t" + "clearf p" + : "=&r" (ret), "=m" (*spinlock) + : "r" (spinlock), "r" ((int) 1), "m" (*spinlock) + : "memory"); +#else /* not __arch_v32 */ __asm__ __volatile__("clearf\n" "0:\n\t" "movu.b [%2],%0\n\t" @@ -43,8 +50,9 @@ testandset (int *spinlock) "bwf 0b\n\t" "clearf" : "=&r" (ret), "=m" (*spinlock) - : "r" (spinlock), "r" ((int) 1) + : "r" (spinlock), "r" ((int) 1), "m" (*spinlock) : "memory"); +#endif /* __arch_v32 */ return ret; } @@ -54,5 +62,3 @@ testandset (int *spinlock) I don't trust register variables, so let's do this the safe way. */ #define CURRENT_STACK_FRAME \ ({ char *sp; __asm__ ("move.d $sp,%0" : "=rm" (sp)); sp; }) - -#endif /* pt-machine.h */ |