system call arguments

1 files changed, 18 insertions, 1 deletions

diff --git a/user1.c b/user1.c
index 4fe572e..ea260a2 100644
--- a/user1.c
+++ b/user1.c
@@ -5,9 +5,26 @@ fork()
   asm("int $48");
 }
 
+void
+cons_putc(int c)
+{
+  asm("mov $4, %eax");
+  asm("int $48");
+}
+
+void
+puts(char *s)
+{
+  int i;
+
+  for(i = 0; s[i]; i++)
+    cons_putc(s[i]);
+}
+
 main()
 {
-  fork();
+  // fork();
+  puts("hello!\n");
   while(1)
     ;
 }