1 files changed, 85 insertions, 0 deletions
diff --git a/core/lwip/src/include/arch/sys_arch.h b/core/lwip/src/include/arch/sys_arch.h
new file mode 100644
index 00000000..732a19c4
--- /dev/null
+++ b/core/lwip/src/include/arch/sys_arch.h
@@ -0,0 +1,85 @@
+#ifndef __LWIP_ARCH_SYS_ARCH_H__
+#define __LWIP_ARCH_SYS_ARCH_H__
+
+#include <stddef.h>
+#include "arch/cc.h"
+#include <thread.h>
+#include <mbox.h>
+
+typedef struct semaphore *sys_sem_t;
+typedef struct mailbox   *sys_mbox_t;
+typedef struct thread    *sys_thread_t;
+
+static inline void sys_sem_signal(sys_sem_t *sem)
+{
+    if (!!sem)
+	sem_up(*sem);
+}
+
+#define sys_now ms_timer
+
+#define SYS_MBOX_NULL	NULL
+#define SYS_SEM_NULL	NULL
+
+extern void __compile_time_error(void);
+
+#define SYS_ARCH_OP(var, val, inc, add)					\
+do {									\
+    if (__builtin_constant_p(val) && (val) == 1) {			\
+	switch (sizeof(var)) {						\
+	case 1:								\
+	    asm volatile(inc "b %0" : "+m" (var));			\
+	    break;							\
+	case 2:								\
+	    asm volatile(inc "w %0" : "+m" (var));			\
+	    break;							\
+	case 4:								\
+	    asm volatile(inc "l %0" : "+m" (var));			\
+	    break;							\
+	default:							\
+	    __compile_time_error();					\
+	    break;							\
+	}								\
+    } else {								\
+	switch (sizeof(var)) {						\
+	case 1:								\
+	    asm volatile(add "b %1,%0" : "+m" (var) : "ri" (val));	\
+	    break;							\
+	case 2:								\
+	    asm volatile(add "w %1,%0" : "+m" (var) : "ri" (val));	\
+	    break;							\
+	case 4:								\
+	    asm volatile(add "l %1,%0" : "+m" (var) : "ri" (val));	\
+	    break;							\
+	default:							\
+	    __compile_time_error();					\
+	    break;							\
+	}								\
+    }									\
+} while (0)
+
+static inline struct sys_timeouts *sys_arch_timeouts(void)
+{
+    return (struct sys_timeouts *)&current()->pvt;
+}
+
+#define SYS_ARCH_INC(var, val) SYS_ARCH_OP(var, val, "inc", "add")
+#define SYS_ARCH_DEC(var, val) SYS_ARCH_OP(var, val, "dec", "sub")
+
+#define SYS_ARCH_GET(var, ret)					\
+    do {						 	\
+        volatile __typeof__(var) * const __varp = &(var);	\
+    	ret = *__varp;						\
+    } while (0)
+
+#define SYS_ARCH_SET(var, val)					\
+    do {						 	\
+        volatile __typeof__(var) * const __varp = &(var);	\
+    	*__varp = val;						\
+    } while (0)
+
+#define SYS_ARCH_DECL_PROTECT(VAR) irq_state_t VAR
+#define SYS_ARCH_PROTECT(VAR) VAR = irq_save()
+#define SYS_ARCH_UNPROTECT(VAR) irq_restore(VAR)
+
+#endif /* __LWIP_ARCH_SYS_ARCH_H__ */