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microblaze: Remove segment.h

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I would like to use asm-generic uaccess.h where are segment
macros defined. This is just first step.

Signed-off-by: Michal Simek <monstr@monstr.eu>
This commit is contained in:
Michal Simek 2010-03-05 15:34:12 +01:00
parent 4009819cf9
commit 40db083433
5 changed files with 34 additions and 52 deletions
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30
arch/microblaze/include/asm/uaccess.h
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@ -22,12 +22,40 @@
#include <asm/mmu.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/segment.h>
#include <linux/string.h>
#define VERIFY_READ 0
#define VERIFY_WRITE 1
/*
* On Microblaze the fs value is actually the top of the corresponding
* address space.
*
* The fs value determines whether argument validity checking should be
* performed or not. If get_fs() == USER_DS, checking is performed, with
* get_fs() == KERNEL_DS, checking is bypassed.
*
* For historical reasons, these macros are grossly misnamed.
*
* For non-MMU arch like Microblaze, KERNEL_DS and USER_DS is equal.
*/
# define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
# ifndef CONFIG_MMU
# define KERNEL_DS MAKE_MM_SEG(0)
# define USER_DS KERNEL_DS
# else
# define KERNEL_DS MAKE_MM_SEG(0xFFFFFFFF)
# define USER_DS MAKE_MM_SEG(TASK_SIZE - 1)
# endif
# define get_ds() (KERNEL_DS)
# define get_fs() (current_thread_info()->addr_limit)
# define set_fs(val) (current_thread_info()->addr_limit = (val))
# define segment_eq(a, b) ((a).seg == (b).seg)
#define __clear_user(addr, n) (memset((void *)(addr), 0, (n)), 0)
#ifndef CONFIG_MMU