1/*
 2 * linux/include/asm-m32r/ptrace.h
 3 *
 4 * This file is subject to the terms and conditions of the GNU General Public
 5 * License.  See the file "COPYING" in the main directory of this archive
 6 * for more details.
 7 *
 8 * M32R version:
 9 *   Copyright (C) 2001-2002, 2004  Hirokazu Takata <takata at linux-m32r.org>
10 */
11#ifndef _ASM_M32R_PTRACE_H
12#define _ASM_M32R_PTRACE_H
13
14
15#include <asm/m32r.h>		/* M32R_PSW_BSM, M32R_PSW_BPM */
16#include <uapi/asm/ptrace.h>
17
18#define arch_has_single_step() (1)
19
20struct task_struct;
21extern void init_debug_traps(struct task_struct *);
22#define arch_ptrace_attach(child) \
23	init_debug_traps(child)
24
25#if defined(CONFIG_ISA_M32R2) || defined(CONFIG_CHIP_VDEC2)
26#define user_mode(regs) ((M32R_PSW_BPM & (regs)->psw) != 0)
27#elif defined(CONFIG_ISA_M32R)
28#define user_mode(regs) ((M32R_PSW_BSM & (regs)->psw) != 0)
29#else
30#error unknown isa configuration
31#endif
32
33#define instruction_pointer(regs) ((regs)->bpc)
34#define profile_pc(regs) instruction_pointer(regs)
35#define user_stack_pointer(regs) ((regs)->spu)
36
37extern void withdraw_debug_trap(struct pt_regs *regs);
38
39#define task_pt_regs(task) \
40        ((struct pt_regs *)(task_stack_page(task) + THREAD_SIZE) - 1)
41#define current_pt_regs() ((struct pt_regs *) \
42	((unsigned long)current_thread_info() + THREAD_SIZE) - 1)
43
44#endif /* _ASM_M32R_PTRACE_H */