fix a problem with end. make uartputc() wait until h/w is ready.

1 files changed, 1 insertions, 0 deletions

diff --git a/sysproc.c b/sysproc.c
index 329feee..82ad884 100644
--- a/sysproc.c
+++ b/sysproc.c
@@ -39,6 +39,7 @@ sys_sbrk(void)
 
   if(argint(0, &n) < 0)
     return -1;
+  printf("sbrk(%d), sz was %d\n", n, (int)myproc()->sz);
   addr = myproc()->sz;
   if(growproc(n) < 0)
     return -1;