2 * Copyright Droids Corporation, Microb Technology, Eirbot (2005)
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 * Revision : $Id: irq_lock.h,v 1.1.2.1 2007-05-23 17:18:09 zer0 Exp $
22 /** \file modules/base/utils/irq_lock_macros.h
23 * \brief Interface of the utils module
25 * here are defined the three macros :
27 * IRQ_LOCK(flags); this saves interrupt state
28 * IRQ_UNLOCK(flags); this restores interrupt state
30 * code example follows:
34 * // code to be protected against interrupts ...
35 * IRQ_UNLOCK(flags); // needs to be associated with an unlock
40 #ifndef _AVERSIVE_IRQ_LOCK_H_
41 #define _AVERSIVE_IRQ_LOCK_H_
45 #ifdef CONFIG_MODULE_HOSTSIM
48 /* we must use 'flags' to avoid a warning */
49 #define cli() do { hostsim_cli(); } while(0)
50 #define sei() do { hostsim_sei(); } while(0)
51 #define IRQ_LOCK(flags) do { flags = hostsim_irq_save(); } while(0)
52 #define IRQ_UNLOCK(flags) do { hostsim_irq_restore(flags); } while(0)
53 #define GLOBAL_IRQ_ARE_MASKED() hostsim_islocked()
55 #define cli() do {} while(0)
56 #define sei() do {} while(0)
57 #define IRQ_LOCK(flags) do { (void)flags; } while(0)
58 #define IRQ_UNLOCK(flags) do { (void)flags; } while(0)
59 #define GLOBAL_IRQ_ARE_MASKED() (0)
60 #endif /* CONFIG_MODULE_HOSTSIM */
64 #define GLOBAL_IRQ_ARE_MASKED() (!(bit_is_set(SREG,7)))
66 #define IRQ_LOCK(flags) do { \
71 #define IRQ_UNLOCK(flags) do { \
75 #endif /* ! HOST_VERSION */
77 #endif /* _AVERSIVE_IRQ_LOCK_H_ */