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Haavard Skinnemoen5f97f7f2006-09-25 23:32:13 -07001/*
2 * Copyright (C) 2004-2006 Atmel Corporation
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * Note: We may not need these definitions for AVR32, as we don't
9 * support a.out.
10 */
11#ifndef __ASM_AVR32_USER_H
12#define __ASM_AVR32_USER_H
13
14#include <linux/types.h>
15#include <asm/ptrace.h>
16#include <asm/page.h>
17
18/*
19 * Core file format: The core file is written in such a way that gdb
20 * can understand it and provide useful information to the user (under
21 * linux we use the `trad-core' bfd). The file contents are as follows:
22 *
23 * upage: 1 page consisting of a user struct that tells gdb
24 * what is present in the file. Directly after this is a
25 * copy of the task_struct, which is currently not used by gdb,
26 * but it may come in handy at some point. All of the registers
27 * are stored as part of the upage. The upage should always be
28 * only one page long.
29 * data: The data segment follows next. We use current->end_text to
30 * current->brk to pick up all of the user variables, plus any memory
31 * that may have been sbrk'ed. No attempt is made to determine if a
32 * page is demand-zero or if a page is totally unused, we just cover
33 * the entire range. All of the addresses are rounded in such a way
34 * that an integral number of pages is written.
35 * stack: We need the stack information in order to get a meaningful
36 * backtrace. We need to write the data from usp to
37 * current->start_stack, so we round each of these in order to be able
38 * to write an integer number of pages.
39 */
40
41struct user_fpu_struct {
42 /* We have no FPU (yet) */
43};
44
45struct user {
46 struct pt_regs regs; /* entire machine state */
47 size_t u_tsize; /* text size (pages) */
48 size_t u_dsize; /* data size (pages) */
49 size_t u_ssize; /* stack size (pages) */
50 unsigned long start_code; /* text starting address */
51 unsigned long start_data; /* data starting address */
52 unsigned long start_stack; /* stack starting address */
53 long int signal; /* signal causing core dump */
H. Peter Anvin6e16d892008-02-07 00:15:57 -080054 unsigned long u_ar0; /* help gdb find registers */
Haavard Skinnemoen5f97f7f2006-09-25 23:32:13 -070055 unsigned long magic; /* identifies a core file */
56 char u_comm[32]; /* user command name */
57};
58
59#define NBPG PAGE_SIZE
60#define UPAGES 1
61#define HOST_TEXT_START_ADDR (u.start_code)
62#define HOST_DATA_START_ADDR (u.start_data)
63#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
64
65#endif /* __ASM_AVR32_USER_H */