linux/include/asm-powerpc/irqflags.h

/*
 * include/asm-powerpc/irqflags.h
 *
 * IRQ flags handling
 */
#ifndef _ASM_IRQFLAGS_H
#define _ASM_IRQFLAGS_H

#ifndef __ASSEMBLY__
/*
 * Get definitions for raw_local_save_flags(x), etc.
 */
#include <asm-powerpc/hw_irq.h>

#else
#ifdef CONFIG_TRACE_IRQFLAGS
/*
 * Most of the CPU's IRQ-state tracing is done from assembly code; we
 * have to call a C function so call a wrapper that saves all the
 * C-clobbered registers.
 */
#define TRACE_ENABLE_INTS	bl .trace_hardirqs_on
#define TRACE_DISABLE_INTS	bl .trace_hardirqs_off
#define TRACE_AND_RESTORE_IRQ_PARTIAL(en,skip)	\
	cmpdi	en, 0;				\
	bne	95f;				\
	stb	en,PACASOFTIRQEN(r13);		\
	bl	.trace_hardirqs_off;		\
	b	skip;				\
95:	bl	.trace_hardirqs_on;		\
	li	en,1;
#define TRACE_AND_RESTORE_IRQ(en)		\
	TRACE_AND_RESTORE_IRQ_PARTIAL(en,96f);	\
96:	stb	en,PACASOFTIRQEN(r13)
#else
#define TRACE_ENABLE_INTS
#define TRACE_DISABLE_INTS
#define TRACE_AND_RESTORE_IRQ_PARTIAL(en,skip)
#define TRACE_AND_RESTORE_IRQ(en)		\
	stb	en,PACASOFTIRQEN(r13)
#endif
#endif

#endif