7df63fcae0
Added --terse and --mailback options to the make stylecheck target. It also does continue even if it enounters a possible error. We decided on two exceptions from the linux kernel coding standard: - Empty wait while loops may end with ; on the same line. - All blocks after while, if, for have to be in brackets even if they only contain one statement. Otherwise it is easy to introduce an error. Checkpatch needs to be adapted to reflect those changes.
49 lines
1.5 KiB
C
49 lines
1.5 KiB
C
/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2012 Fergus Noble <fergusnoble@gmail.com>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef LIBOPENCM3_CM3_SYNC_H
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#define LIBOPENCM3_CM3_SYNC_H
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#include "common.h"
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/* Implements synchronisation primatives as discussed in the ARM document
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* DHT0008A (ID081709) "ARM Synchronization Primitives" and the ARM v7-M
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* Architecture Reference Manual.
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*/
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/* --- Exclusive load and store instructions ------------------------------- */
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u32 __ldrex(volatile u32 *addr);
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u32 __strex(u32 val, volatile u32 *addr);
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void __dmb(void);
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/* --- Convenience functions ----------------------------------------------- */
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/* Here we implement some simple synchronisation primatives. */
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typedef u32 mutex_t;
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#define MUTEX_UNLOCKED 0
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#define MUTEX_LOCKED 1
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void mutex_lock(mutex_t *m);
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void mutex_unlock(mutex_t *m);
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#endif
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