[linux-2.6-block.git] / include / asm-avr32 / user.h

/*
 * Copyright (C) 2004-2006 Atmel Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Note: We may not need these definitions for AVR32, as we don't
 * support a.out.
 */
#ifndef __ASM_AVR32_USER_H
#define __ASM_AVR32_USER_H

#include <linux/types.h>
#include <asm/ptrace.h>
#include <asm/page.h>

/*
 * Core file format: The core file is written in such a way that gdb
 * can understand it and provide useful information to the user (under
 * linux we use the `trad-core' bfd).  The file contents are as follows:
 *
 *  upage: 1 page consisting of a user struct that tells gdb
 *	what is present in the file.  Directly after this is a
 *	copy of the task_struct, which is currently not used by gdb,
 *	but it may come in handy at some point.  All of the registers
 *	are stored as part of the upage.  The upage should always be
 *	only one page long.
 *  data: The data segment follows next.  We use current->end_text to
 *	current->brk to pick up all of the user variables, plus any memory
 *	that may have been sbrk'ed.  No attempt is made to determine if a
 *	page is demand-zero or if a page is totally unused, we just cover
 *	the entire range.  All of the addresses are rounded in such a way
 *	that an integral number of pages is written.
 *  stack: We need the stack information in order to get a meaningful
 *	backtrace.  We need to write the data from usp to
 *	current->start_stack, so we round each of these in order to be able
 *	to write an integer number of pages.
 */

struct user_fpu_struct {
	/* We have no FPU (yet) */
};

struct user {
	struct pt_regs	regs;			/* entire machine state */
	size_t		u_tsize;		/* text size (pages) */
	size_t		u_dsize;		/* data size (pages) */
	size_t		u_ssize;		/* stack size (pages) */
	unsigned long	start_code;		/* text starting address */
	unsigned long	start_data;		/* data starting address */
	unsigned long	start_stack;		/* stack starting address */
	long int	signal;			/* signal causing core dump */
	unsigned long	u_ar0;			/* help gdb find registers */
	unsigned long	magic;			/* identifies a core file */
	char		u_comm[32];		/* user command name */
};

#define NBPG			PAGE_SIZE
#define UPAGES			1
#define HOST_TEXT_START_ADDR	(u.start_code)
#define HOST_DATA_START_ADDR	(u.start_data)
#define HOST_STACK_END_ADDR	(u.start_stack + u.u_ssize * NBPG)

#endif /* __ASM_AVR32_USER_H */
Commit	Line	Data
5f97f7f9 HS	1	/*
	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
	41	struct user_fpu_struct {
	42	/* We have no FPU (yet) */
	43	};
	44
	45	struct 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 */
6e16d89b	54	unsigned long u_ar0; /* help gdb find registers */
5f97f7f9 HS	55	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 */