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- /****************************************************************************
- * arch/avr/include/debug.h
- *
- * Copyright (C) 2015 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
- #ifndef __INCLUDE_ARCH_AVR_DEBUG_H
- #define __INCLUDE_ARCH_AVR_DEBUG_H
- /****************************************************************************
- * Included Files
- ****************************************************************************/
- #include <nuttx/config.h>
- #include <nuttx/compiler.h>
- #include <syslog.h>
- #ifdef CONFIG_AVR_HAS_MEMX_PTR
- /****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
- /* Since format string that is passed to __arch_syslog() can be a
- * comma-separated list, we need some cpp trickery to handle it
- *
- * __dbg_first() helper macro accepts the format (that is potentially
- * a comma-separated) and substitutes to its first element.
- *
- * __dbg_subst() helper macro substitutes first element in the format
- * with prefix.
- */
- #define __dbg_first(format, ...) format
- #define __dbg_subst(prefix, format, ...) prefix, ##__VA_ARGS__
- #define __dbg_expand(logger, prio, format, ...) \
- do \
- { \
- static const IOBJ char dbg_s[] = __dbg_first(format); \
- logger(prio, __dbg_subst(dbg_s, format), ##__VA_ARGS__); \
- } \
- while(0)
- /* __arch_syslog() overrides the behavior of NuttX debug macros. They put
- * the format string into program memory and utilize IPTR (__memx) parameter
- * of syslog to take the format directly from program memory. This reduces
- * amount of RAM held by the format strings used in debug statements.
- */
- #define __arch_syslog(...) \
- __dbg_expand(syslog, ##__VA_ARGS__)
- #endif /* CONFIG_AVR_HAS_MEMX_PTR */
- #endif /* __INCLUDE_ARCH_DEBUG_H */
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