mirror of
https://github.com/RIOT-OS/RIOT.git
synced 2024-12-29 04:50:03 +01:00
fd559bcdb5
- Moved VIC.c to irq_arch.c for consistent naming scheme
- Removed unused functions IRQenabled, disableFIQ, restoreFIQ, enableFIQ
- There is not header for those functions, so they *cannot* be used
- These is obviously no user, as they *cannot* be used
- There is absolutely no documentation what they would be used for
57 lines
1.2 KiB
C
57 lines
1.2 KiB
C
/* Copyright (C) 2005, 2006, 2007, 2008 by Thomas Hillebrandt and Heiko Will
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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#include "VIC.h"
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#include <stdbool.h>
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#define IRQ_MASK 0x00000080
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static inline unsigned __get_cpsr(void)
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{
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unsigned long retval;
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__asm__ volatile(" mrs %0, cpsr" : "=r"(retval) : /* no inputs */ : "memory");
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return retval;
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}
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int irq_is_in(void)
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{
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int retval;
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__asm__ volatile(" mrs %0, cpsr" : "=r"(retval) : /* no inputs */ : "memory");
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return (retval & INTMode) == 18;
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}
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static inline void __set_cpsr(unsigned val)
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{
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__asm__ volatile(" msr cpsr, %0" : /* no outputs */ : "r"(val) : "memory");
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}
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unsigned irq_disable(void)
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{
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unsigned _cpsr;
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_cpsr = __get_cpsr();
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__set_cpsr(_cpsr | IRQ_MASK);
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return _cpsr;
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}
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unsigned irq_restore(unsigned oldCPSR)
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{
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unsigned _cpsr;
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_cpsr = __get_cpsr();
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__set_cpsr((_cpsr & ~IRQ_MASK) | (oldCPSR & IRQ_MASK));
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return _cpsr;
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}
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unsigned irq_enable(void)
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{
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unsigned _cpsr;
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_cpsr = __get_cpsr();
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__set_cpsr(_cpsr & ~IRQ_MASK);
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return _cpsr;
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}
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