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/*
* IRQ flags handling
*/
#ifndef _ASM_IRQFLAGS_H
#define _ASM_IRQFLAGS_H
#ifndef __ASSEMBLY__
/*
* Get definitions for arch_local_save_flags(x), etc.
*/
#include <asm/hw_irq.h>
#else
#ifdef CONFIG_TRACE_IRQFLAGS
#ifdef CONFIG_IRQSOFF_TRACER
/*
* Since the ftrace irqsoff latency trace checks CALLER_ADDR1,
* which is the stack frame here, we need to force a stack frame
* in case we came from user space.
*/
#define TRACE_WITH_FRAME_BUFFER(func) \
mflr r0; \
stdu r1, -32(r1); \
std r0, 16(r1); \
stdu r1, -32(r1); \
bl func; \
ld r1, 0(r1); \
ld r1, 0(r1);
#else
#define TRACE_WITH_FRAME_BUFFER(func) \
bl func;
#endif
/*
* 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 TRACE_WITH_FRAME_BUFFER(.trace_hardirqs_on)
#define TRACE_DISABLE_INTS TRACE_WITH_FRAME_BUFFER(.trace_hardirqs_off)
#define TRACE_AND_RESTORE_IRQ_PARTIAL(en,skip) \
cmpdi en,0; \
bne 95f; \
stb en,PACASOFTIRQEN(r13); \
TRACE_WITH_FRAME_BUFFER(.trace_hardirqs_off) \
b skip; \
95: TRACE_WITH_FRAME_BUFFER(.trace_hardirqs_on) \
li en,1;
#define TRACE_AND_RESTORE_IRQ(en) \
TRACE_AND_RESTORE_IRQ_PARTIAL(en,96f); \
stb en,PACASOFTIRQEN(r13); \
96:
#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
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