1#ifndef __ASM_SH64_USER_H
2#define __ASM_SH64_USER_H
3
4/*
5 * This file is subject to the terms and conditions of the GNU General Public
6 * License.  See the file "COPYING" in the main directory of this archive
7 * for more details.
8 *
9 * include/asm-sh64/user.h
10 *
11 * Copyright (C) 2000, 2001  Paolo Alberelli
12 *
13 */
14
15#include <linux/types.h>
16#include <asm/ptrace.h>
17#include <asm/page.h>
18
19/*
20 * Core file format: The core file is written in such a way that gdb
21 * can understand it and provide useful information to the user (under
22 * linux we use the `trad-core' bfd).  The file contents are as follows:
23 *
24 *  upage: 1 page consisting of a user struct that tells gdb
25 *	what is present in the file.  Directly after this is a
26 *	copy of the task_struct, which is currently not used by gdb,
27 *	but it may come in handy at some point.  All of the registers
28 *	are stored as part of the upage.  The upage should always be
29 *	only one page long.
30 *  data: The data segment follows next.  We use current->end_text to
31 *	current->brk to pick up all of the user variables, plus any memory
32 *	that may have been sbrk'ed.  No attempt is made to determine if a
33 *	page is demand-zero or if a page is totally unused, we just cover
34 *	the entire range.  All of the addresses are rounded in such a way
35 *	that an integral number of pages is written.
36 *  stack: We need the stack information in order to get a meaningful
37 *	backtrace.  We need to write the data from usp to
38 *	current->start_stack, so we round each of these in order to be able
39 *	to write an integer number of pages.
40 */
41
42struct user_fpu_struct {
43        unsigned long long fp_regs[32];
44	unsigned int fpscr;
45};
46
47struct user {
48	struct pt_regs	regs;			/* entire machine state */
49	struct user_fpu_struct fpu;	/* Math Co-processor registers  */
50	int u_fpvalid;		/* True if math co-processor being used */
51	size_t		u_tsize;		/* text size (pages) */
52	size_t		u_dsize;		/* data size (pages) */
53	size_t		u_ssize;		/* stack size (pages) */
54	unsigned long	start_code;		/* text starting address */
55	unsigned long	start_data;		/* data starting address */
56	unsigned long	start_stack;		/* stack starting address */
57	long int	signal;			/* signal causing core dump */
58	struct regs *	u_ar0;			/* help gdb find registers */
59	struct user_fpu_struct* u_fpstate;	/* Math Co-processor pointer */
60	unsigned long	magic;			/* identifies a core file */
61	char		u_comm[32];		/* user command name */
62};
63
64#define NBPG			PAGE_SIZE
65#define UPAGES			1
66#define HOST_TEXT_START_ADDR	(u.start_code)
67#define HOST_DATA_START_ADDR	(u.start_data)
68#define HOST_STACK_END_ADDR	(u.start_stack + u.u_ssize * NBPG)
69
70#endif /* __ASM_SH64_USER_H */
71