1 files changed, 53 insertions, 0 deletions
diff --git a/stacks/lwip_stack/release/lwip_helper_files/lwip/arch/atomic_32.h b/stacks/lwip_stack/release/lwip_helper_files/lwip/arch/atomic_32.h
new file mode 100644
index 0000000..15a058b
--- /dev/null
+++ b/stacks/lwip_stack/release/lwip_helper_files/lwip/arch/atomic_32.h
@@ -0,0 +1,53 @@
+/*
+ * atomic_32.h
+ *
+ */
+
+#ifndef ATOMIC_32_H_
+#define ATOMIC_32_H_
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+  typedef struct
+  {
+    volatile int counter;
+  } atomic_t;
+
+#define ATOMIC_INIT(i) {(i)}
+#define atomic_read(v) (*(volatile int *)&(v)->counter)
+#define atomic_set(v, i) (((v)->counter) = (i))
+
+  static inline void atomic_add (int i, atomic_t * v)
+  {
+    __asm__ __volatile__ (
+                           /*LOCK_PREFIX "addl %1,%0" */
+                           "addl %1,%0":"+m" (v->counter):"ir" (i));
+  }
+
+  static inline void atomic_sub (int i, atomic_t * v)
+  {
+    __asm__ __volatile__ (
+                           /*LOCK_PREFIX "subl %1,%0" */
+                           "subl %1,%0":"+m" (v->counter):"ir" (i));
+  }
+
+  static __inline__ void atomic_inc (atomic_t * v)
+  {
+    __asm__ __volatile__ (
+                           /*LOCK_PREFIX "incl %0" */
+                           "incl %0":"+m" (v->counter));
+  }
+
+  static __inline__ void atomic_dec (atomic_t * v)
+  {
+    __asm__ __volatile__ (
+                           /*LOCK_PREFIX "decl %0" */
+                           "decl %0":"+m" (v->counter));
+  }
+#ifdef __cplusplus
+}
+#endif
+#endif /* ATOMIC_32_H_ */