first commit

port/arch/cc.h

@@ -0,0 +1,35 @@
+#ifndef LWIP_ARCH_CC_H
+#define LWIP_ARCH_CC_H
+
+#include <ch32fun.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+#define BYTE_ORDER LITTLE_ENDIAN
+
+#define LWIP_PLATFORM_DIAG(x) \
+  do {                        \
+    printf x;                 \
+  } while (0)
+
+#define LWIP_PLATFORM_ASSERT(x)                                       \
+  do {                                                                \
+    printf("Assertion \"%s\" failed at line %d in %s\n", x, __LINE__, \
+           __FILE__);                                                 \
+    while (1);                                                        \
+  } while (0)
+
+#define X8_F "02x"
+#define U16_F "u"
+#define S16_F "d"
+#define X16_F "x"
+#define U32_F "u"
+#define S32_F "d"
+#define X32_F "x"
+#define SZT_F "u"
+
+#define LWIP_RAND() ((u32_t)rand())
+
+#endif /* LWIP_ARCH_CC_H */