Initial revision

[karo-tx-redboot.git] / packages / compat / linux / v2_0 / include / asm / semaphore.h

diff --git a/packages/compat/linux/v2_0/include/asm/semaphore.h b/packages/compat/linux/v2_0/include/asm/semaphore.h
new file mode 100644 (file)
index 0000000..e816155
--- /dev/null
+++ b/packages/compat/linux/v2_0/include/asm/semaphore.h
@@ -0,0 +1,20 @@
+#ifndef __ASM_SEMAPHORE_H__
+#define __ASM_SEMAPHORE_H__
+
+#include <cyg/hal/drv_api.h>
+
+struct semaphore {
+       cyg_drv_mutex_t x;
+};
+
+#define DECLARE_MUTEX(x) struct semaphore x = { { 0 } };
+#define DECLARE_MUTEX_LOCKED(x) struct semaphore x = { { 1 } };
+
+#define init_MUTEX(sem) cyg_drv_mutex_init((cyg_drv_mutex_t *)sem)
+#define init_MUTEX_LOCKED(sem) do { cyg_drv_mutex_init((cyg_drv_mutex_t *)sem); cyg_drv_mutex_lock((cyg_drv_mutex_t *)sem); } while(0)
+#define down(sem) cyg_drv_mutex_lock((cyg_drv_mutex_t *)sem)
+#define down_interruptible(sem) ({ cyg_drv_mutex_lock((cyg_drv_mutex_t *)sem), 0; })
+#define down_trylock(sem) cyg_drv_mutex_trylock((cyg_drv_mutex_t *)sem)
+#define up(sem) cyg_drv_mutex_unlock((cyg_drv_mutex_t *)sem)
+
+#endif /* __ASM_SEMAPHORE_H__ */