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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070016#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 */