swp_emulate.c File Reference

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/proc_fs.h>
#include <linux/sched.h>
#include <linux/syscalls.h>
#include <linux/perf_event.h>
#include <asm/opcodes.h>
#include <asm/traps.h>
#include <asm/uaccess.h>

Go to the source code of this file.

Macros
#define	__user_swpX_asm(data, addr, res, temp, B)
#define	__user_swp_asm(data, addr, res, temp)   __user_swpX_asm(data, addr, res, temp, "")
#define	__user_swpb_asm(data, addr, res, temp)   __user_swpX_asm(data, addr, res, temp, "b")
#define	EXTRACT_REG_NUM(instruction, offset)   (((instruction) & (0xf << (offset))) >> (offset))
#define	RN_OFFSET   16
#define	RT_OFFSET   12
#define	RT2_OFFSET   0
#define	TYPE_SWPB   (1 << 22)

Functions
	late_initcall (swp_emulation_init)

Macro Definition Documentation

#define __user_swp_asm	(		data,
			addr,
			res,
			temp
	)		__user_swpX_asm(data, addr, res, temp, "")

Definition at line 57 of file swp_emulate.c.

#define __user_swpb_asm	(		data,
			addr,
			res,
			temp
	)		__user_swpX_asm(data, addr, res, temp, "b")

Definition at line 59 of file swp_emulate.c.

#define __user_swpX_asm	(		data,
			addr,
			res,
			temp,
			B
	)

Value:

__asm__ __volatile__(                   \
    "   mov     %2, %1\n"           \
    "0: ldrex"B"    %1, [%3]\n"         \
    "1: strex"B"    %0, %2, [%3]\n"         \
    "   cmp     %0, #0\n"           \
    "   movne       %0, %4\n"           \
    "2:\n"                          \
    "   .section     .fixup,\"ax\"\n"       \
    "   .align      2\n"                \
    "3: mov     %0, %5\n"           \
    "   b       2b\n"               \
    "   .previous\n"                    \
    "   .section     __ex_table,\"a\"\n"        \
    "   .align      3\n"                \
    "   .long       0b, 3b\n"           \
    "   .long       1b, 3b\n"           \
    "   .previous"                  \
    : "=&r" (res), "+r" (data), "=&r" (temp)        \
    : "r" (addr), "i" (-EAGAIN), "i" (-EFAULT)      \
    : "cc", "memory")

Definition at line 35 of file swp_emulate.c.

#define EXTRACT_REG_NUM	(		instruction,
			offset
	)		(((instruction) & (0xf << (offset))) >> (offset))

Definition at line 65 of file swp_emulate.c.

#define RN_OFFSET   16

Definition at line 67 of file swp_emulate.c.

#define RT2_OFFSET   0

Definition at line 69 of file swp_emulate.c.

#define RT_OFFSET   12

Definition at line 68 of file swp_emulate.c.

#define TYPE_SWPB   (1 << 22)

Definition at line 74 of file swp_emulate.c.

Function Documentation

late_initcall

(

swp_emulation_init

)