1#ifndef _METAG_PTRACE_H
2#define _METAG_PTRACE_H
3
4#include <linux/compiler.h>
5#include <uapi/asm/ptrace.h>
6#include <asm/tbx.h>
7
8#ifndef __ASSEMBLY__
9
10/* this struct defines the way the registers are stored on the
11   stack during a system call. */
12
13struct pt_regs {
14	TBICTX ctx;
15	TBICTXEXTCB0 extcb0[5];
16};
17
18#define user_mode(regs) (((regs)->ctx.SaveMask & TBICTX_PRIV_BIT) > 0)
19
20#define instruction_pointer(regs) ((unsigned long)(regs)->ctx.CurrPC)
21#define profile_pc(regs) instruction_pointer(regs)
22
23#define task_pt_regs(task) \
24	((struct pt_regs *)(task_stack_page(task) + \
25			    sizeof(struct thread_info)))
26
27#define current_pt_regs() \
28	((struct pt_regs *)((char *)current_thread_info() + \
29			    sizeof(struct thread_info)))
30
31int syscall_trace_enter(struct pt_regs *regs);
32void syscall_trace_leave(struct pt_regs *regs);
33
34/* copy a struct user_gp_regs out to user */
35int metag_gp_regs_copyout(const struct pt_regs *regs,
36			  unsigned int pos, unsigned int count,
37			  void *kbuf, void __user *ubuf);
38/* copy a struct user_gp_regs in from user */
39int metag_gp_regs_copyin(struct pt_regs *regs,
40			 unsigned int pos, unsigned int count,
41			 const void *kbuf, const void __user *ubuf);
42/* copy a struct user_cb_regs out to user */
43int metag_cb_regs_copyout(const struct pt_regs *regs,
44			  unsigned int pos, unsigned int count,
45			  void *kbuf, void __user *ubuf);
46/* copy a struct user_cb_regs in from user */
47int metag_cb_regs_copyin(struct pt_regs *regs,
48			 unsigned int pos, unsigned int count,
49			 const void *kbuf, const void __user *ubuf);
50/* copy a struct user_rp_state out to user */
51int metag_rp_state_copyout(const struct pt_regs *regs,
52			   unsigned int pos, unsigned int count,
53			   void *kbuf, void __user *ubuf);
54/* copy a struct user_rp_state in from user */
55int metag_rp_state_copyin(struct pt_regs *regs,
56			  unsigned int pos, unsigned int count,
57			  const void *kbuf, const void __user *ubuf);
58
59#endif /* __ASSEMBLY__ */
60#endif /* _METAG_PTRACE_H */
61