release/src-rt-6.x/linux/linux-2.6/arch/arm/kernel/ptrace.h

   1 /*
   2  *  linux/arch/arm/kernel/ptrace.h
   3  *
   4  *  Copyright (C) 2000-2003 Russell King
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10 #include <linux/ptrace.h>
  11
  12 extern void ptrace_cancel_bpt(struct task_struct *);
  13 extern void ptrace_set_bpt(struct task_struct *);
  14 extern void ptrace_break(struct task_struct *, struct pt_regs *);
  15
  16 /*
  17  * make sure single-step breakpoint is gone.
  18  */
  19 static inline void single_step_disable(struct task_struct *task)
  20 {
  21         task->ptrace &= ~PT_SINGLESTEP;
  22         ptrace_cancel_bpt(task);
  23 }
  24
  25 static inline void single_step_enable(struct task_struct *task)
  26 {
  27         task->ptrace |= PT_SINGLESTEP;
  28 }
  29
  30 /*
  31  * Send SIGTRAP if we're single-stepping
  32  */
  33 static inline void single_step_trap(struct task_struct *task)
  34 {
  35         if (task->ptrace & PT_SINGLESTEP) {
  36                 ptrace_cancel_bpt(task);
  37                 send_sig(SIGTRAP, task, 1);
  38         }
  39 }
  40
  41 static inline void single_step_clear(struct task_struct *task)
  42 {
  43         if (task->ptrace & PT_SINGLESTEP)
  44                 ptrace_cancel_bpt(task);
  45 }
  46
  47 static inline void single_step_set(struct task_struct *task)
  48 {
  49         if (task->ptrace & PT_SINGLESTEP)
  50                 ptrace_set_bpt(task);
  51 }