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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>
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@ -234,6 +234,8 @@ struct thread_struct {
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#define thread_saved_pc(tsk) \
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((tsk)->thread.regs? (tsk)->thread.regs->nip: 0)
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#define task_pt_regs(tsk) ((struct pt_regs *)(tsk)->thread.regs)
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unsigned long get_wchan(struct task_struct *p);
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#define KSTK_EIP(tsk) ((tsk)->thread.regs? (tsk)->thread.regs->nip: 0)
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