*
* \brief OS-specific definitions
*
- * \version $Id$
* \author Bernie Innocenti <bernie@codewiz.org>
*/
#ifndef CFG_OS_H
#define CFG_OS_H
+#include "cfg/cfg_proc.h"
+
/*
* OS autodetection (Some systems trigger multiple OS definitions)
*/
sigismember(&sigs__, SIGALRM) ? false : true; \
})
+ #if (CONFIG_KERN && CONFIG_KERN_PREEMPT)
+ #define DECLARE_ISR_CONTEXT_SWITCH(vect) \
+ void vect(UNUSED_ARG(int, arg)); \
+ INLINE void __isr_##vect(void); \
+ void vect(UNUSED_ARG(int, arg)) \
+ { \
+ __isr_##vect(); \
+ IRQ_PREEMPT_HANDLER(); \
+ } \
+ INLINE void __isr_##vect(void)
+ /**
+ * With task priorities enabled each ISR is used a point to
+ * check if we need to perform a context switch.
+ *
+ * Instead, without priorities a context switch can occur only
+ * when the running task expires its time quantum. In this last
+ * case, the context switch can only occur in the timer ISR,
+ * that must be always declared with the
+ * DECLARE_ISR_CONTEXT_SWITCH() macro.
+ */
+ #if CONFIG_KERN_PRI
+ #define DECLARE_ISR(vect) \
+ DECLARE_ISR_CONTEXT_SWITCH(vect)
+ #endif /* CONFIG_KERN_PRI */
+ #endif
+ #ifndef DECLARE_ISR
+ #define DECLARE_ISR(vect) \
+ void vect(UNUSED_ARG(int, arg))
+ #endif
+ #ifndef DECLARE_ISR_CONTEXT_SWITCH
+ #define DECLARE_ISR_CONTEXT_SWITCH(vect) \
+ void vect(UNUSED_ARG(int, arg))
+ #endif
+
#else
#define OS_UNIX 0
#define OS_POSIX 0