1/* MN10300 User process data
2 *
3 * Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd.
4 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public Licence
8 * as published by the Free Software Foundation; either version
9 * 2 of the Licence, or (at your option) any later version.
10 */
11#ifndef _ASM_USER_H
12#define _ASM_USER_H
13
14#include <asm/page.h>
15#include <linux/ptrace.h>
16
17#ifndef __ASSEMBLY__
18/*
19 * When the kernel dumps core, it starts by dumping the user struct - this will
20 * be used by gdb to figure out where the data and stack segments are within
21 * the file, and what virtual addresses to use.
22 */
23struct user {
24	/* We start with the registers, to mimic the way that "memory" is
25	 * returned from the ptrace(3,...) function.
26	 */
27	struct pt_regs regs;		/* Where the registers are actually stored */
28
29	/* The rest of this junk is to help gdb figure out what goes where */
30	unsigned long int u_tsize;	/* Text segment size (pages). */
31	unsigned long int u_dsize;	/* Data segment size (pages). */
32	unsigned long int u_ssize;	/* Stack segment size (pages). */
33	unsigned long start_code;	/* Starting virtual address of text. */
34	unsigned long start_stack;	/* Starting virtual address of stack area.
35					   This is actually the bottom of the stack,
36					   the top of the stack is always found in the
37					   esp register.  */
38	long int signal;		/* Signal that caused the core dump. */
39	int reserved;			/* No longer used */
40	struct user_pt_regs *u_ar0;	/* Used by gdb to help find the values for */
41
42	/* the registers */
43	unsigned long magic;		/* To uniquely identify a core file */
44	char u_comm[32];		/* User command that was responsible */
45};
46#endif
47
48#define NBPG PAGE_SIZE
49#define UPAGES 1
50#define HOST_TEXT_START_ADDR	+(u.start_code)
51#define HOST_STACK_END_ADDR	+(u.start_stack + u.u_ssize * NBPG)
52
53#endif /* _ASM_USER_H */
54