rtl_sync.h

来自「rtlinux3.0 的源代码」· C头文件 代码 · 共 20 行

/*
 * Copyright (C) 1999 FSM Labs (http://www.fsmlabs.com/)
 *  Written by Cort Dougan <[e-mail]>
 *  and Victor Yodaiken <[e-mail]>
 */
#ifndef __ARCH_RTL_SYNC__
#define __ARCH_RTL_SYNC__

typedef unsigned long rtl_irqstate_t;

#define __rtl_hard_save_flags(x)		__asm__ __volatile__("pushfl ; popl %0":"=g" (x): /* no input */ :"memory")
#define __rtl_hard_restore_flags(x) 	__asm__ __volatile__("pushl %0 ; popfl": /* no output */ :"g" (x):"memory")
#define __rtl_hard_cli() 		__asm__ __volatile__("cli": : :"memory")
#define __rtl_hard_sti()		__asm__ __volatile__("sti": : :"memory")

#define __rtl_hard_savef_and_cli(x) __asm__ __volatile__("pushfl ; popl %0 ; cli":"=g" (x): /* no input */ :"memory")

#endif