[linux-block.git] / include / asm-sh64 / user.h

#ifndef __ASM_SH64_USER_H
#define __ASM_SH64_USER_H

/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * include/asm-sh64/user.h
 *
 * Copyright (C) 2000, 2001  Paolo Alberelli
 *
 */

#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 {
        unsigned long long fp_regs[32];
	unsigned int fpscr;
};

struct user {
	struct pt_regs	regs;			/* entire machine state */
	struct user_fpu_struct fpu;	/* Math Co-processor registers  */
	int u_fpvalid;		/* True if math co-processor being used */
	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 */
	struct regs *	u_ar0;			/* help gdb find registers */
	struct user_fpu_struct* u_fpstate;	/* Math Co-processor pointer */
	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_SH64_USER_H */
Commit	Line	Data
1da177e4 LT	1	#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>
1da177e4 LT	16	#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
	42	struct user_fpu_struct {
	43	unsigned long long fp_regs[32];
	44	unsigned int fpscr;
	45	};
	46
	47	struct 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 */