1#ifndef _ASM_IA64_USER_H
2#define _ASM_IA64_USER_H
3
4/*
5 * Core file format: The core file is written in such a way that gdb
6 * can understand it and provide useful information to the user (under
7 * linux we use the `trad-core' bfd).  The file contents are as
8 * follows:
9 *
10 *  upage: 1 page consisting of a user struct that tells gdb
11 *	what is present in the file.  Directly after this is a
12 *	copy of the task_struct, which is currently not used by gdb,
13 *	but it may come in handy at some point.  All of the registers
14 *	are stored as part of the upage.  The upage should always be
15 *	only one page long.
16 *  data: The data segment follows next.  We use current->end_text to
17 *	current->brk to pick up all of the user variables, plus any memory
18 *	that may have been sbrk'ed.  No attempt is made to determine if a
19 *	page is demand-zero or if a page is totally unused, we just cover
20 *	the entire range.  All of the addresses are rounded in such a way
21 *	that an integral number of pages is written.
22 *  stack: We need the stack information in order to get a meaningful
23 *	backtrace.  We need to write the data from usp to
24 *	current->start_stack, so we round each of these in order to be able
25 *	to write an integer number of pages.
26 *
27 * Modified 1998, 1999, 2001
28 *	David Mosberger-Tang <davidm@hpl.hp.com>, Hewlett-Packard Co
29 */
30
31#include <linux/ptrace.h>
32#include <linux/types.h>
33
34#include <asm/page.h>
35
36#define EF_SIZE		3072
37
38struct user {
39	unsigned long	regs[EF_SIZE/8+32];	/* integer and fp regs */
40	size_t		u_tsize;		/* text size (pages) */
41	size_t		u_dsize;		/* data size (pages) */
42	size_t		u_ssize;		/* stack size (pages) */
43	unsigned long	start_code;		/* text starting address */
44	unsigned long	start_data;		/* data starting address */
45	unsigned long	start_stack;		/* stack starting address */
46	long int	signal;			/* signal causing core dump */
47	struct regs *	u_ar0;			/* help gdb find registers */
48	unsigned long	magic;			/* identifies a core file */
49	char		u_comm[32];		/* user command name */
50};
51
52#define NBPG			PAGE_SIZE
53#define UPAGES			1
54#define HOST_TEXT_START_ADDR	(u.start_code)
55#define HOST_DATA_START_ADDR	(u.start_data)
56#define HOST_STACK_END_ADDR	(u.start_stack + u.u_ssize * NBPG)
57
58#endif /* _ASM_IA64_USER_H */
59