uaccess_std.c File Reference

#include <linux/errno.h>
#include <linux/mm.h>
#include <linux/uaccess.h>
#include <asm/futex.h>
#include "uaccess.h"

Go to the source code of this file.

Macros
#define	AHI   "ahi"
#define	ALR   "alr"
#define	CLR   "clr"
#define	LHI   "lhi"
#define	SLR   "slr"
#define	__futex_atomic_op(insn, ret, oldval, newval, uaddr, oparg)

Functions
size_t	copy_from_user_std (size_t size, const void __user *ptr, void *x)
size_t	copy_to_user_std (size_t size, void __user *ptr, const void *x)
size_t	strnlen_user_std (size_t size, const char __user *src)
size_t	strncpy_from_user_std (size_t size, const char __user *src, char *dst)
int	futex_atomic_op_std (int op, u32 __user *uaddr, int oparg, int *old)
int	futex_atomic_cmpxchg_std (u32 *uval, u32 __user *uaddr, u32 oldval, u32 newval)

Variables
struct uaccess_ops	uaccess_std

Macro Definition Documentation

#define __futex_atomic_op	(		insn,
			ret,
			oldval,
			newval,
			uaddr,
			oparg
	)

Value:

asm volatile(                           \
        "   sacf  256\n"                    \
        "0: l     %1,0(%6)\n"                   \
        "1:"insn                        \
        "2: cs    %1,%2,0(%6)\n"                \
        "3: jl    1b\n"                     \
        "   lhi   %0,0\n"                   \
        "4: sacf  0\n"                      \
        EX_TABLE(0b,4b) EX_TABLE(2b,4b) EX_TABLE(3b,4b)     \
        : "=d" (ret), "=&d" (oldval), "=&d" (newval),       \
          "=m" (*uaddr)                     \
        : "0" (-EFAULT), "d" (oparg), "a" (uaddr),      \
          "m" (*uaddr) : "cc");

Definition at line 241 of file uaccess_std.c.

#define AHI   "ahi"

Definition at line 17 of file uaccess_std.c.

#define ALR   "alr"

Definition at line 18 of file uaccess_std.c.

#define CLR   "clr"

Definition at line 19 of file uaccess_std.c.

#define LHI   "lhi"

Definition at line 20 of file uaccess_std.c.

#define SLR   "slr"

Definition at line 21 of file uaccess_std.c.

Function Documentation

size_t copy_from_user_std	(	size_t	size,
		const void __user *	ptr,
		void *	x
	)

Definition at line 30 of file uaccess_std.c.

size_t copy_to_user_std	(	size_t	size,
		void __user *	ptr,
		const void *	x
	)

Definition at line 80 of file uaccess_std.c.

int futex_atomic_cmpxchg_std	(	u32 *	uval,
		u32 __user *	uaddr,
		u32	oldval,
		u32	newval
	)

Definition at line 288 of file uaccess_std.c.

int futex_atomic_op_std	(	int	op,
		u32 __user *	uaddr,
		int	oparg,
		int *	old
	)

Definition at line 256 of file uaccess_std.c.

size_t strncpy_from_user_std	(	size_t	size,
		const char __user *	src,
		char *	dst
	)

Definition at line 207 of file uaccess_std.c.

size_t strnlen_user_std	(	size_t	size,
		const char __user *	src
	)

Definition at line 186 of file uaccess_std.c.

Variable Documentation

struct uaccess_ops uaccess_std

Initial value:

= {
    .copy_from_user = copy_from_user_std_check,
    .copy_from_user_small = copy_from_user_std,
    .copy_to_user = copy_to_user_std_check,
    .copy_to_user_small = copy_to_user_std,
    .copy_in_user = copy_in_user_std,
    .clear_user = clear_user_std,
    .strnlen_user = strnlen_user_std,
    .strncpy_from_user = strncpy_from_user_std,
    .futex_atomic_op = futex_atomic_op_std,
    .futex_atomic_cmpxchg = futex_atomic_cmpxchg_std,
}

Definition at line 306 of file uaccess_std.c.