57 lines
1.1 KiB
C
57 lines
1.1 KiB
C
/*
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* SHcompact irqflags support
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*
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* Copyright (C) 2006 - 2009 Paul Mundt
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <linux/irqflags.h>
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#include <linux/module.h>
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void notrace arch_local_irq_restore(unsigned long flags)
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{
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unsigned long __dummy0, __dummy1;
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if (flags == ARCH_IRQ_DISABLED) {
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__asm__ __volatile__ (
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"stc sr, %0\n\t"
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"or #0xf0, %0\n\t"
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"ldc %0, sr\n\t"
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: "=&z" (__dummy0)
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: /* no inputs */
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: "memory"
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);
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} else {
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__asm__ __volatile__ (
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"stc sr, %0\n\t"
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"and %1, %0\n\t"
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#ifdef CONFIG_CPU_HAS_SR_RB
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"stc r6_bank, %1\n\t"
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"or %1, %0\n\t"
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#endif
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"ldc %0, sr\n\t"
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: "=&r" (__dummy0), "=r" (__dummy1)
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: "1" (~ARCH_IRQ_DISABLED)
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: "memory"
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);
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}
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}
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EXPORT_SYMBOL(arch_local_irq_restore);
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unsigned long notrace arch_local_save_flags(void)
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{
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unsigned long flags;
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__asm__ __volatile__ (
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"stc sr, %0\n\t"
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"and #0xf0, %0\n\t"
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: "=&z" (flags)
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: /* no inputs */
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: "memory"
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);
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return flags;
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}
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EXPORT_SYMBOL(arch_local_save_flags);
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