System Calls cleanup, multiple Processes and context switch

[cortex-from-scratch] / lib / syscall.c

diff --git a/lib/syscall.c b/lib/syscall.c
index d844b43..34401c5 100644 (file)
--- a/lib/syscall.c
+++ b/lib/syscall.c
@@ -5,7 +5,7 @@
  * Initial version 
  * 
  * $DESCRIPTION$
- * System calls for user functions
+ * System calls for various user functions
  *
  */
 
@@ -18,11 +18,11 @@
 /* Arguments are placed in r0, r1, r2 by convention
  * And "parsed" to the the kernel
  * Right after the svc call, r0 contains status
- * of call (ie. OK, NOTOK */
+ * of call (ie. OK, SYSERR) */
 
 int theos_uptime() {
 
-       asm volatile("svc 6");
+       asm volatile("svc 7");
        int ret;
        asm volatile("mov %0, r0" : "=r" (ret));        
        return ret;