Viewing file:  ptrace.h (1.19 KB) -rw-r--r--
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/*
* Copyright 2004-2008 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#ifndef _BFIN_PTRACE_H
#define _BFIN_PTRACE_H
#include <uapi/asm/ptrace.h>
#ifndef __ASSEMBLY__
/* user_mode returns true if only one bit is set in IPEND, other than the
master interrupt enable. */
#define user_mode(regs) (!(((regs)->ipend & ~0x10) & (((regs)->ipend & ~0x10) - 1)))
#define arch_has_single_step() (1)
/* common code demands this function */
#define ptrace_disable(child) user_disable_single_step(child)
#define current_user_stack_pointer() rdusp()
extern int is_user_addr_valid(struct task_struct *child,
unsigned long start, unsigned long len);
/*
* Get the address of the live pt_regs for the specified task.
* These are saved onto the top kernel stack when the process
* is not running.
*
* Note: if a user thread is execve'd from kernel space, the
* kernel stack will not be empty on entry to the kernel, so
* ptracing these tasks will fail.
*/
#define task_pt_regs(task) \
(struct pt_regs *) \
((unsigned long)task_stack_page(task) + \
(THREAD_SIZE - sizeof(struct pt_regs)))
#include <asm-generic/ptrace.h>
#endif /* __ASSEMBLY__ */
#endif /* _BFIN_PTRACE_H */
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