1 /* Copyright (C) 1999-2021 Free Software Foundation, Inc.
2    This file is part of the GNU C Library.
3 
4    The GNU C Library is free software; you can redistribute it and/or
5    modify it under the terms of the GNU Lesser General Public
6    License as published by the Free Software Foundation; either
7    version 2.1 of the License, or (at your option) any later version.
8 
9    The GNU C Library is distributed in the hope that it will be useful,
10    but WITHOUT ANY WARRANTY; without even the implied warranty of
11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12    Lesser General Public License for more details.
13 
14    You should have received a copy of the GNU Lesser General Public
15    License along with the GNU C Library.  If not, see
16    <https://www.gnu.org/licenses/>.  */
17 
18 #ifndef _SYS_USER_H
19 #define _SYS_USER_H	1
20 
21 /* The whole purpose of this file is for gdb/strace and gdb/strace
22    only. Don't read too much into it. Don't use it for anything other
23    than gdb/strace unless you know what you are doing. */
24 
25 #include <asm/reg.h>
26 #include <stddef.h>
27 
28 struct user
29 {
30   unsigned long	int regs[EF_SIZE / 8 + 32];	/* integer and fp regs */
31   size_t u_tsize;				/* text size (pages) */
32   size_t u_dsize;				/* data size (pages) */
33   size_t u_ssize;				/* stack size (pages) */
34   unsigned long	int start_code;			/* text starting address */
35   unsigned long	int start_data;			/* data starting address */
36   unsigned long	int start_stack;		/* stack starting address */
37   long int signal;				/* signal causing core dump */
38   struct regs *u_ar0;				/* help gdb find registers */
39   unsigned long	int magic;			/* identifies a core file */
40   char u_comm[32];				/* user command name */
41 };
42 
43 #define PAGE_SHIFT		13
44 #define PAGE_SIZE		(1UL << PAGE_SHIFT)
45 #define PAGE_MASK		(~(PAGE_SIZE-1))
46 #define NBPG			PAGE_SIZE
47 #define UPAGES			1
48 #define HOST_TEXT_START_ADDR	(u.start_code)
49 #define HOST_DATA_START_ADDR	(u.start_data)
50 #define HOST_STACK_END_ADDR	(u.start_stack + u.u_ssize * NBPG)
51 
52 #endif	/* sys/user.h */
53