6e16d89bcd
struct user.u_ar0 is defined to contain a pointer offset on all architectures in which it is defined (all architectures which define an a.out format except SPARC.) However, it has a pointer type in the headers, which is pointless -- <asm/user.h> is not exported to userspace, and it just makes the code messy. Redefine the field as "unsigned long" (which is the same size as a pointer on all Linux architectures) and change the setting code to user offsetof() instead of hand-coded arithmetic. Cc: Linux Arch Mailing List <linux-arch@vger.kernel.org> Cc: Bryan Wu <bryan.wu@analog.com> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Lennert Buytenhek <kernel@wantstofly.org> Cc: Håvard Skinnemoen <hskinnemoen@atmel.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Tony Luck <tony.luck@intel.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
66 lines
2.4 KiB
C
66 lines
2.4 KiB
C
/*
|
|
* 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 */
|