X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=secnet.git;a=blobdiff_plain;f=netlink.c;h=ecad16cb73e6d8cb18b724148912648a2482a219;hp=568cb2ea203d90bcd35d88f5388121b12688e2cc;hb=20d324b6d71fdfbbe28479848c934ca3a1f69f16;hpb=fe5e9cc422cd72526ccfceffbc7e5af8ac83b407

diff --git a/netlink.c b/netlink.c
index 568cb2e..ecad16c 100644
--- a/netlink.c
+++ b/netlink.c
@@ -97,6 +97,7 @@ their use.
 
 */
 
+#include <string.h>
 #include "secnet.h"
 #include "util.h"
 #include "ipaddr.h"
@@ -147,30 +148,30 @@ static inline uint16_t ip_csum(uint8_t *iph,uint32_t count)
 static inline uint16_t ip_fast_csum(uint8_t *iph, uint32_t ihl) {
     uint32_t sum;
 
-    __asm__ __volatile__("
-            movl (%1), %0
-            subl $4, %2
-            jbe 2f
-            addl 4(%1), %0
-            adcl 8(%1), %0
-            adcl 12(%1), %0
-1:          adcl 16(%1), %0
-            lea 4(%1), %1
-            decl %2
-            jne 1b
-            adcl $0, %0
-            movl %0, %2
-            shrl $16, %0
-            addw %w2, %w0
-            adcl $0, %0
-            notl %0
-2:
-            "
+    __asm__ __volatile__(
+            "movl (%1), %0      ;\n"
+            "subl $4, %2        ;\n"
+            "jbe 2f             ;\n"
+            "addl 4(%1), %0     ;\n"
+            "adcl 8(%1), %0     ;\n"
+            "adcl 12(%1), %0    ;\n"
+"1:         adcl 16(%1), %0     ;\n"
+            "lea 4(%1), %1      ;\n"
+            "decl %2            ;\n"
+            "jne 1b             ;\n"
+            "adcl $0, %0        ;\n"
+            "movl %0, %2        ;\n"
+            "shrl $16, %0       ;\n"
+            "addw %w2, %w0      ;\n"
+            "adcl $0, %0        ;\n"
+            "notl %0            ;\n"
+"2:                             ;\n"
         /* Since the input registers which are loaded with iph and ipl
            are modified, we must also specify them as outputs, or gcc
            will assume they contain their original values. */
         : "=r" (sum), "=r" (iph), "=r" (ihl)
-        : "1" (iph), "2" (ihl));
+        : "1" (iph), "2" (ihl)
+	: "memory");
     return sum;
 }
 #else