/* * This file is subject to the terms and conditions of the GNU General Public * License.  See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 1994, 95, 96, 97, 98, 99, 2003 by Ralf Baechle * Copyright (C) 1996 by Paul M. Antoine * Copyright (C) 1999 Silicon Graphics * Copyright (C) 2000 MIPS Technologies, Inc. */#ifndef _ASM_INTERRUPT_H#define _ASM_INTERRUPT_H #include <asm/hazards.h> __asm__ (	".macro\tlocal_irq_enable\n\t"	".set\tpush\n\t"	".set\treorder\n\t"	".set\tnoat\n\t"	"mfc0\t$1,$12\n\t"	"ori\t$1,0x1f\n\t"	"xori\t$1,0x1e\n\t"	"mtc0\t$1,$12\n\t"	"irq_enable_hazard\n\t"	".set\tpop\n\t"	".endm"); static inline void local_irq_enable(void){	__asm__ __volatile__(		"local_irq_enable"		: /* no outputs */		: /* no inputs */		: "memory");} /* * For cli() we have to insert nops to make sure that the new value * has actually arrived in the status register before the end of this * macro. * R4000/R4400 need three nops, the R4600 two nops and the R10000 needs * no nops at all. */__asm__ (	".macro\tlocal_irq_disable\n\t"	".set\tpush\n\t"	".set\tnoat\n\t"	"mfc0\t$1,$12\n\t"	"ori\t$1,1\n\t"	"xori\t$1,1\n\t"	".set\tnoreorder\n\t"	"mtc0\t$1,$12\n\t"	"irq_disable_hazard\n\t"	".set\tpop\n\t"	".endm"); static inline void local_irq_disable(void){	__asm__ __volatile__(		"local_irq_disable"		: /* no outputs */		: /* no inputs */		: "memory");} __asm__ (	".macro\tlocal_save_flags flags\n\t"	".set\tpush\n\t"	".set\treorder\n\t"	"mfc0\t\\flags, $12\n\t"	".set\tpop\n\t"	".endm"); #define local_save_flags(x)						\__asm__ __volatile__(							\	"local_save_flags %0"						\	: "=r" (x)) __asm__ (	".macro\tlocal_irq_save result\n\t"	".set\tpush\n\t"	".set\treorder\n\t"	".set\tnoat\n\t"	"mfc0\t\\result, $12\n\t"	"ori\t$1, \\result, 1\n\t"	"xori\t$1, 1\n\t"	".set\tnoreorder\n\t"	"mtc0\t$1, $12\n\t"	"irq_disable_hazard\n\t"	".set\tpop\n\t"	".endm"); #define local_irq_save(x)						\__asm__ __volatile__(							\	"local_irq_save\t%0"						\	: "=r" (x)							\	: /* no inputs */						\	: "memory") __asm__ (	".macro\tlocal_irq_restore flags\n\t"	".set\tnoreorder\n\t"	".set\tnoat\n\t"	"mfc0\t$1, $12\n\t"	"andi\t\\flags, 1\n\t"	"ori\t$1, 1\n\t"	"xori\t$1, 1\n\t"	"or\t\\flags, $1\n\t"	"mtc0\t\\flags, $12\n\t"	"irq_disable_hazard\n\t"	".set\tat\n\t"	".set\treorder\n\t"	".endm"); #define local_irq_restore(flags)					\do {									\	unsigned long __tmp1;						\									\	__asm__ __volatile__(						\		"local_irq_restore\t%0"					\		: "=r" (__tmp1)						\		: "0" (flags)						\		: "memory");						\} while(0) #define irqs_disabled()							\({									\	unsigned long flags;						\	local_save_flags(flags);					\	!(flags & 1);							\}) #endif /* _ASM_INTERRUPT_H */