1#ifndef __ASM_SH_USER_H
2#define __ASM_SH_USER_H
3
4#include <linux/types.h>
5#include <asm/processor.h>
6#include <asm/ptrace.h>
7#include <asm/page.h>
8
9/*
10 * Core file format: The core file is written in such a way that gdb
11 * can understand it and provide useful information to the user (under
12 * linux we use the `trad-core' bfd).  The file contents are as follows:
13 *
14 *  upage: 1 page consisting of a user struct that tells gdb
15 *	what is present in the file.  Directly after this is a
16 *	copy of the task_struct, which is currently not used by gdb,
17 *	but it may come in handy at some point.  All of the registers
18 *	are stored as part of the upage.  The upage should always be
19 *	only one page long.
20 *  data: The data segment follows next.  We use current->end_text to
21 *	current->brk to pick up all of the user variables, plus any memory
22 *	that may have been sbrk'ed.  No attempt is made to determine if a
23 *	page is demand-zero or if a page is totally unused, we just cover
24 *	the entire range.  All of the addresses are rounded in such a way
25 *	that an integral number of pages is written.
26 *  stack: We need the stack information in order to get a meaningful
27 *	backtrace.  We need to write the data from usp to
28 *	current->start_stack, so we round each of these in order to be able
29 *	to write an integer number of pages.
30 */
31
32struct user_fpu_struct {
33	unsigned long fp_regs[16];
34	unsigned long xfp_regs[16];
35	unsigned long fpscr;
36	unsigned long fpul;
37};
38
39struct user {
40	struct pt_regs	regs;			/* entire machine state */
41	struct user_fpu_struct fpu;	/* Math Co-processor registers  */
42	int u_fpvalid;		/* True if math co-processor being used */
43	size_t		u_tsize;		/* text size (pages) */
44	size_t		u_dsize;		/* data size (pages) */
45	size_t		u_ssize;		/* stack size (pages) */
46	unsigned long	start_code;		/* text starting address */
47	unsigned long	start_data;		/* data starting address */
48	unsigned long	start_stack;		/* stack starting address */
49	long int	signal;			/* signal causing core dump */
50	struct regs *	u_ar0;			/* help gdb find registers */
51	struct user_fpu_struct* u_fpstate;	/* Math Co-processor pointer */
52	unsigned long	magic;			/* identifies a core file */
53	char		u_comm[32];		/* user command name */
54};
55
56#define NBPG			PAGE_SIZE
57#define UPAGES			1
58#define HOST_TEXT_START_ADDR	(u.start_code)
59#define HOST_DATA_START_ADDR	(u.start_data)
60#define HOST_STACK_END_ADDR	(u.start_stack + u.u_ssize * NBPG)
61
62#endif /* __ASM_SH_USER_H */
63