Initial revision
diff --git a/contiki-gp32/uip/uip_arch.c b/contiki-gp32/uip/uip_arch.c
new file mode 100644
index 0000000..94b7a40
--- /dev/null
+++ b/contiki-gp32/uip/uip_arch.c
@@ -0,0 +1,212 @@
+/*
+ * Copyright (c) 2001, Adam Dunkels.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by Adam Dunkels.
+ * 4. The name of the author may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This file is part of the uIP TCP/IP stack.
+ *
+ * $Id: uip_arch.c,v 1.1 2003/05/19 09:30:06 gpz Exp $
+ *
+ */
+
+
+#include "uip.h"
+#include "uip_arch.h"
+
+#define BUF ((uip_tcpip_hdr *)&uip_buf[UIP_LLH_LEN])
+#define IP_PROTO_TCP 6
+
+/*-----------------------------------------------------------------------------------*/
+#if UIP_BUFSIZE > 255
+/*-----------------------------------------------------------------------------------*/
+void
+uip_add_rcv_nxt(u16_t n)
+{
+ uip_conn->rcv_nxt[3] += (n & 0xff);
+ uip_conn->rcv_nxt[2] += (n >> 8);
+
+ if(uip_conn->rcv_nxt[2] < (n >> 8)) {
+ ++uip_conn->rcv_nxt[1];
+ if(uip_conn->rcv_nxt[1] == 0) {
+ ++uip_conn->rcv_nxt[0];
+ }
+ }
+
+
+ if(uip_conn->rcv_nxt[3] < (n & 0xff)) {
+ ++uip_conn->rcv_nxt[2];
+ if(uip_conn->rcv_nxt[2] == 0) {
+ ++uip_conn->rcv_nxt[1];
+ if(uip_conn->rcv_nxt[1] == 0) {
+ ++uip_conn->rcv_nxt[0];
+ }
+ }
+ }
+}
+/*-----------------------------------------------------------------------------------*/
+void
+uip_add32(u8_t *op32, u16_t op16)
+{
+
+ uip_acc32[3] = op32[3] + (op16 & 0xff);
+ uip_acc32[2] = op32[2] + (op16 >> 8);
+ uip_acc32[1] = op32[1];
+ uip_acc32[0] = op32[0];
+
+ if(uip_acc32[2] < (op16 >> 8)) {
+ ++uip_acc32[1];
+ if(uip_acc32[1] == 0) {
+ ++uip_acc32[0];
+ }
+ }
+
+
+ if(uip_acc32[3] < (op16 & 0xff)) {
+ ++uip_acc32[2];
+ if(uip_acc32[2] == 0) {
+ ++uip_acc32[1];
+ if(uip_acc32[1] == 0) {
+ ++uip_acc32[0];
+ }
+ }
+ }
+}
+/*-----------------------------------------------------------------------------------*/
+#else /* UIP_BUFSIZE > 255 */
+/*-----------------------------------------------------------------------------------*/
+void
+uip_add_rcv_nxt(u8_t n)
+{
+ uip_conn->rcv_nxt[3] += n;
+ if(uip_conn->rcv_nxt[3] < n) {
+ ++uip_conn->rcv_nxt[2];
+ if(uip_conn->rcv_nxt[2] == 0) {
+ ++uip_conn->rcv_nxt[1];
+ if(uip_conn->rcv_nxt[1] == 0) {
+ ++uip_conn->rcv_nxt[0];
+ }
+ }
+ }
+}
+/*-----------------------------------------------------------------------------------*/
+void
+uip_add32(u8_t *op32, u8_t op8)
+{
+ uip_acc32[3] = op32[3] + op8;
+ uip_acc32[2] = op32[2];
+ uip_acc32[1] = op32[1];
+ uip_acc32[0] = op32[0];
+
+ if(uip_acc32[3] < op8) {
+ ++uip_acc32[2];
+ if(uip_acc32[2] == 0) {
+ ++uip_acc32[1];
+ if(uip_acc32[1] == 0) {
+ ++uip_acc32[0];
+ }
+ }
+ }
+}
+/*-----------------------------------------------------------------------------------*/
+#endif /* UIP_BUFSIZE > 255 */
+u16_t
+uip_chksum(u16_t *sdata, u16_t len)
+{
+ u16_t acc;
+
+ for(acc = 0; len > 1; len -= 2) {
+ acc += *sdata;
+ if(acc < *sdata) {
+ /* Overflow, so we add the carry to acc (i.e., increase by
+ one). */
+ ++acc;
+ }
+ ++sdata;
+ }
+
+ /* add up any odd byte */
+ if(len == 1) {
+ acc += htons(((u16_t)(*(u8_t *)sdata)) << 8);
+ if(acc < htons(((u16_t)(*(u8_t *)sdata)) << 8)) {
+ ++acc;
+ }
+ }
+
+ return acc;
+}
+/*-----------------------------------------------------------------------------------*/
+u16_t
+uip_ipchksum(void)
+{
+ return uip_chksum((u16_t *)&uip_buf[UIP_LLH_LEN], 20);
+}
+/*-----------------------------------------------------------------------------------*/
+u16_t
+uip_tcpchksum(void)
+{
+ u16_t hsum, sum;
+
+
+ /* Compute the checksum of the TCP header. */
+ hsum = uip_chksum((u16_t *)&uip_buf[20 + UIP_LLH_LEN], 20);
+
+ /* Compute the checksum of the data in the TCP packet and add it to
+ the TCP header checksum. */
+ sum = uip_chksum((u16_t *)uip_appdata,
+ (u16_t)(((((u16_t)(BUF->len[0]) << 8) + BUF->len[1]) - 40)));
+
+ if((sum += hsum) < hsum) {
+ ++sum;
+ }
+
+ if((sum += BUF->srcipaddr[0]) < BUF->srcipaddr[0]) {
+ ++sum;
+ }
+ if((sum += BUF->srcipaddr[1]) < BUF->srcipaddr[1]) {
+ ++sum;
+ }
+ if((sum += BUF->destipaddr[0]) < BUF->destipaddr[0]) {
+ ++sum;
+ }
+ if((sum += BUF->destipaddr[1]) < BUF->destipaddr[1]) {
+ ++sum;
+ }
+ if((sum += (u16_t)htons((u16_t)IP_PROTO_TCP)) < (u16_t)htons((u16_t)IP_PROTO_TCP)) {
+ ++sum;
+ }
+
+ hsum = (u16_t)htons((((u16_t)(BUF->len[0]) << 8) + BUF->len[1]) - 20);
+
+ if((sum += hsum) < hsum) {
+ ++sum;
+ }
+
+ return sum;
+}
+/*-----------------------------------------------------------------------------------*/