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[PATCH] powerpc: Implement PR_[GS]ET_UNALIGN prctls for powerpc

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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>
This commit is contained in:
Paul Mackerras
2006-06-07 16:15:39 +10:00
parent fab5db97e4
commit e9370ae15d
3 changed files with 22 additions and 2 deletions
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11
arch/powerpc/kernel/process.c
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@@ -752,6 +752,17 @@ int get_endian(struct task_struct *tsk, unsigned long adr)
return put_user(val, (unsigned int __user *)adr);
}
int set_unalign_ctl(struct task_struct *tsk, unsigned int val)
{
tsk->thread.align_ctl = val;
return 0;
}
int get_unalign_ctl(struct task_struct *tsk, unsigned long adr)
{
return put_user(tsk->thread.align_ctl, (unsigned int __user *)adr);
}
#define TRUNC_PTR(x) ((typeof(x))(((unsigned long)(x)) & 0xffffffff))
int sys_clone(unsigned long clone_flags, unsigned long usp,