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CRISv32: prevent bogus restarts on sigreturn
[mirror_ubuntu-artful-kernel.git] / arch / cris / kernel / ptrace.c
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1/*
2 * linux/arch/cris/kernel/ptrace.c
3 *
4 * Parts taken from the m68k port.
1b7e7da3 5 *
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6 * Copyright (c) 2000, 2001, 2002 Axis Communications AB
7 *
8 * Authors: Bjorn Wesen
9 *
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10 */
11
12#include <linux/kernel.h>
13#include <linux/sched.h>
14#include <linux/mm.h>
15#include <linux/smp.h>
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16#include <linux/errno.h>
17#include <linux/ptrace.h>
18#include <linux/user.h>
733e5e4b 19#include <linux/tracehook.h>
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20
21#include <asm/uaccess.h>
22#include <asm/page.h>
23#include <asm/pgtable.h>
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24#include <asm/processor.h>
25
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26
27/* notification of userspace execution resumption
28 * - triggered by current->work.notify_resume
29 */
7b275523 30extern int do_signal(int canrestart, struct pt_regs *regs);
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31
32
7b275523 33void do_notify_resume(int canrestart, struct pt_regs *regs,
1b7e7da3 34 __u32 thread_info_flags)
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35{
36 /* deal with pending signal delivery */
37 if (thread_info_flags & _TIF_SIGPENDING)
7b275523 38 do_signal(canrestart,regs);
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39
40 if (thread_info_flags & _TIF_NOTIFY_RESUME) {
41 clear_thread_flag(TIF_NOTIFY_RESUME);
42 tracehook_notify_resume(regs);
43 }
1da177e4 44}