1/*
2 * Copyright 2004-2008 Analog Devices Inc.
3 *
4 * Licensed under the GPL-2 or later.
5 */
6#ifndef _BFIN_PTRACE_H
7#define _BFIN_PTRACE_H
8
9#include <uapi/asm/ptrace.h>
10
11#ifndef __ASSEMBLY__
12
13/* user_mode returns true if only one bit is set in IPEND, other than the
14   master interrupt enable.  */
15#define user_mode(regs) (!(((regs)->ipend & ~0x10) & (((regs)->ipend & ~0x10) - 1)))
16
17#define arch_has_single_step()	(1)
18/* common code demands this function */
19#define ptrace_disable(child) user_disable_single_step(child)
20#define current_user_stack_pointer() rdusp()
21
22extern int is_user_addr_valid(struct task_struct *child,
23			      unsigned long start, unsigned long len);
24
25/*
26 * Get the address of the live pt_regs for the specified task.
27 * These are saved onto the top kernel stack when the process
28 * is not running.
29 *
30 * Note: if a user thread is execve'd from kernel space, the
31 * kernel stack will not be empty on entry to the kernel, so
32 * ptracing these tasks will fail.
33 */
34#define task_pt_regs(task) \
35	(struct pt_regs *) \
36	    ((unsigned long)task_stack_page(task) + \
37	     (THREAD_SIZE - sizeof(struct pt_regs)))
38
39#include <asm-generic/ptrace.h>
40
41#endif				/* __ASSEMBLY__ */
42#endif				/* _BFIN_PTRACE_H */
43