ALPHA: "prctl" macros
Ivan Kokshaysky [Sun, 6 May 2007 21:50:38 +0000 (14:50 -0700)]
Files:

include/asm-alpha/thread_info.h

Provide "prctl" macros for ALPHA.

Signed-off-by: Jay Estabrook <jay.estabrook@hp.com>
Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/asm-alpha/thread_info.h

index 69ffd93..eeb3bef 100644 (file)
@@ -92,5 +92,27 @@ register struct thread_info *__current_thread_info __asm__("$8");
 #define _TIF_ALLWORK_MASK      (_TIF_WORK_MASK         \
                                 | _TIF_SYSCALL_TRACE)
 
+#define ALPHA_UAC_SHIFT                6
+#define ALPHA_UAC_MASK         (1 << TIF_UAC_NOPRINT | 1 << TIF_UAC_NOFIX | \
+                                1 << TIF_UAC_SIGBUS)
+
+#define SET_UNALIGN_CTL(task,value)    ({                                   \
+       (task)->thread_info->flags = (((task)->thread_info->flags &          \
+               ~ALPHA_UAC_MASK)                                             \
+               | (((value) << ALPHA_UAC_SHIFT)       & (1<<TIF_UAC_NOPRINT))\
+               | (((value) << (ALPHA_UAC_SHIFT + 1)) & (1<<TIF_UAC_SIGBUS)) \
+               | (((value) << (ALPHA_UAC_SHIFT - 1)) & (1<<TIF_UAC_NOFIX)));\
+       0; })
+
+#define GET_UNALIGN_CTL(task,value)    ({                              \
+       put_user(((task)->thread_info->flags & (1 << TIF_UAC_NOPRINT))  \
+                 >> ALPHA_UAC_SHIFT                                    \
+                | ((task)->thread_info->flags & (1 << TIF_UAC_SIGBUS)) \
+                >> (ALPHA_UAC_SHIFT + 1)                               \
+                | ((task)->thread_info->flags & (1 << TIF_UAC_NOFIX))  \
+                >> (ALPHA_UAC_SHIFT - 1),                              \
+                (int __user *)(value));                                \
+       })
+
 #endif /* __KERNEL__ */
 #endif /* _ALPHA_THREAD_INFO_H */