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