release/src-rt-6.x.4708/linux/linux-2.6.36/arch/cris/kernel/ptrace.c

   1 /*
   2  *  linux/arch/cris/kernel/ptrace.c
   3  *
   4  * Parts taken from the m68k port.
   5  *
   6  * Copyright (c) 2000, 2001, 2002 Axis Communications AB
   7  *
   8  * Authors:   Bjorn Wesen
   9  *
  10  */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/sched.h>
  14 #include <linux/mm.h>
  15 #include <linux/smp.h>
  16 #include <linux/errno.h>
  17 #include <linux/ptrace.h>
  18 #include <linux/user.h>
  19 #include <linux/tracehook.h>
  20
  21 #include <asm/uaccess.h>
  22 #include <asm/page.h>
  23 #include <asm/pgtable.h>
  24 #include <asm/system.h>
  25 #include <asm/processor.h>
  26
  27
  28 /* notification of userspace execution resumption
  29  * - triggered by current->work.notify_resume
  30  */
  31 extern int do_signal(int canrestart, struct pt_regs *regs);
  32
  33
  34 void do_notify_resume(int canrestart, struct pt_regs *regs,
  35                       __u32 thread_info_flags)
  36 {
  37         /* deal with pending signal delivery */
  38         if (thread_info_flags & _TIF_SIGPENDING)
  39                 do_signal(canrestart,regs);
  40
  41         if (thread_info_flags & _TIF_NOTIFY_RESUME) {
  42                 clear_thread_flag(TIF_NOTIFY_RESUME);
  43                 tracehook_notify_resume(regs);
  44                 if (current->replacement_session_keyring)
  45                         key_replace_session_keyring();
  46         }
  47 }