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powerpc: Implement task_pt_regs() accessor 

The task_pt_regs() macro allows access to the pt_regs of a given task.

This macro is not currently defined for the powerpc architecture, but
we need it for some upcoming utrace additions.

Signed-off-by: Srinivasa DS <srinivasa@in.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Srinivasa Ds 2008-07-08 00:22:27 +10:00 committed by Benjamin Herrenschmidt
parent 058c78f4ba
commit e5093ff05d
1 changed files with 2 additions and 0 deletions
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2
include/asm-powerpc/processor.h
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@ -234,6 +234,8 @@ struct thread_struct {
#define thread_saved_pc(tsk) \
((tsk)->thread.regs? (tsk)->thread.regs->nip: 0)
#define task_pt_regs(tsk) ((struct pt_regs *)(tsk)->thread.regs)
unsigned long get_wchan(struct task_struct *p);
#define KSTK_EIP(tsk) ((tsk)->thread.regs? (tsk)->thread.regs->nip: 0)