Porting PicoTCP WIP

kernel/picotcp/include/arch/pico_pic32.h

@@ -0,0 +1,54 @@
+
+/*********************************************************************
+   PicoTCP. Copyright (c) 2012-2017 Altran Intelligent Systems. Some rights reserved.
+   See COPYING, LICENSE.GPLv2 and LICENSE.GPLv3 for usage.
+
+ *********************************************************************/
+#ifndef _INCLUDE_PICO_PIC32
+#define _INCLUDE_PICO_PIC32
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include "pico_constants.h"
+
+/* monotonically increasing tick,
+ * typically incremented every millisecond in a systick interrupt */
+extern volatile unsigned int pico_ms_tick;
+
+#ifdef PIC32_NO_PRINTF
+#define dbg(...) do {} while(0)
+#else
+#define dbg printf
+#endif
+
+/* Use plain C-lib malloc and free */
+#define pico_free(x) free(x)
+
+static inline void *pico_zalloc(size_t size)
+{
+    void *ptr = malloc(size);
+    if(ptr)
+        memset(ptr, 0u, size);
+
+    return ptr;
+}
+
+static inline pico_time PICO_TIME_MS(void)
+{
+    return (pico_time)pico_ms_tick;
+}
+
+static inline pico_time PICO_TIME(void)
+{
+    return (pico_time)(PICO_TIME_MS() / 1000);
+}
+
+static inline void PICO_IDLE(void)
+{
+    unsigned int now = pico_ms_tick;
+    while(now == pico_ms_tick) ;
+}
+
+#endif  /* PICO_PIC32 */
+