60 lines
1.8 KiB
C
60 lines
1.8 KiB
C
/*
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* (C) Copyright 2004, Psyent Corporation <www.psyent.com>
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* Scott McNutt <smcnutt@psyent.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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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 as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#ifndef __ASM_NIOS2_SYSTEM_H_
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#define __ASM_NIOS2_SYSTEM_H_
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#define local_irq_enable() __asm__ __volatile__ ( \
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"rdctl r8, status\n" \
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"ori r8, r8, 1\n" \
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"wrctl status, r8\n" \
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: : : "r8")
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#define local_irq_disable() __asm__ __volatile__ ( \
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"rdctl r8, status\n" \
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"andi r8, r8, 0xfffe\n" \
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"wrctl status, r8\n" \
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: : : "r8")
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#define local_save_flags(x) __asm__ __volatile__ ( \
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"rdctl r8, status\n" \
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"mov %0, r8\n" \
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: "=r" (x) : : "r8", "memory")
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#define local_irq_restore(x) __asm__ __volatile__ ( \
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"mov r8, %0\n" \
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"wrctl status, r8\n" \
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: : "r" (x) : "r8", "memory")
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/* For spinlocks etc */
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#define local_irq_save(x) do { local_save_flags(x); local_irq_disable(); } \
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while (0)
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#define irqs_disabled() \
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({ \
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unsigned long flags; \
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local_save_flags(flags); \
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((flags & NIOS2_STATUS_PIE_MSK) == 0x0); \
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})
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#endif /* __ASM_NIOS2_SYSTEM_H */
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