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authorPaul Mackerras <paulus@samba.org>2006-06-07 02:15:39 -0400
committerPaul Mackerras <paulus@samba.org>2006-06-09 07:24:16 -0400
commite9370ae15dc2f8ba1e1889ce26f13cda565b6ecb (patch)
tree338ed732f7a6607bc168795008e244f180876cda /arch/powerpc/kernel/process.c
parentfab5db97e44f76461f76b24adfa8ccb14d4df498 (diff)
[PATCH] powerpc: Implement PR_[GS]ET_UNALIGN prctls for powerpc
This gives the ability to control whether alignment exceptions get fixed up or reported to the process as a SIGBUS, using the existing PR_SET_UNALIGN and PR_GET_UNALIGN prctls. We do not implement the option of logging a message on alignment exceptions. Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/kernel/process.c')
-rw-r--r--arch/powerpc/kernel/process.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 2d35d83961b2..e4732459c485 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -752,6 +752,17 @@ int get_endian(struct task_struct *tsk, unsigned long adr)
752 return put_user(val, (unsigned int __user *)adr); 752 return put_user(val, (unsigned int __user *)adr);
753} 753}
754 754
755int set_unalign_ctl(struct task_struct *tsk, unsigned int val)
756{
757 tsk->thread.align_ctl = val;
758 return 0;
759}
760
761int get_unalign_ctl(struct task_struct *tsk, unsigned long adr)
762{
763 return put_user(tsk->thread.align_ctl, (unsigned int __user *)adr);
764}
765
755#define TRUNC_PTR(x) ((typeof(x))(((unsigned long)(x)) & 0xffffffff)) 766#define TRUNC_PTR(x) ((typeof(x))(((unsigned long)(x)) & 0xffffffff))
756 767
757int sys_clone(unsigned long clone_flags, unsigned long usp, 768int sys_clone(unsigned long clone_flags, unsigned long usp,