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+/*
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+ * This file contains miscellaneous low-level functions.
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+ * Copyright (C) 1995-2005 IBM Corp
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+ *
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+ * Largely rewritten by Cort Dougan (cort@cs.nmt.edu)
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+ * and Paul Mackerras.
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+ * Adapted for iSeries by Mike Corrigan (mikejc@us.ibm.com)
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+ * PPC64 updates by Dave Engebretsen (engebret@us.ibm.com)
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+ *
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+ * This program is free software; you can redistribute it and/or
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+ * modify it under the terms of the GNU General Public License
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+ * as published by the Free Software Foundation; either version
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+ * 2 of the License, or (at your option) any later version.
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+ */
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+
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+#include <asm/processor.h>
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+#include <asm/asm-offsets.h>
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+
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+ .text
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+
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+/* unsigned long local_save_flags(void) */
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+_GLOBAL(local_get_flags)
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+ lbz r3,PACAPROCENABLED(r13)
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+ blr
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+
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+/* unsigned long local_irq_disable(void) */
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+_GLOBAL(local_irq_disable)
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+ lbz r3,PACAPROCENABLED(r13)
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+ li r4,0
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+ stb r4,PACAPROCENABLED(r13)
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+ blr /* Done */
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+
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+/* void local_irq_restore(unsigned long flags) */
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+_GLOBAL(local_irq_restore)
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+ lbz r5,PACAPROCENABLED(r13)
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+ /* Check if things are setup the way we want _already_. */
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+ cmpw 0,r3,r5
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+ beqlr
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+ /* are we enabling interrupts? */
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+ cmpdi 0,r3,0
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+ stb r3,PACAPROCENABLED(r13)
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+ beqlr
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+ /* Check pending interrupts */
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+ /* A decrementer, IPI or PMC interrupt may have occurred
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+ * while we were in the hypervisor (which enables) */
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+ ld r4,PACALPPACA+LPPACAANYINT(r13)
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+ cmpdi r4,0
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+ beqlr
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+
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+ /*
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+ * Handle pending interrupts in interrupt context
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+ */
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+ li r0,0x5555
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+ sc
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+ blr
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