Add yield system call, for zombie test program (bad idea?).

1 files changed, 2 insertions, 0 deletions

diff --git a/syscall.c b/syscall.c
index eddf725..4853e35 100644
--- a/syscall.c
+++ b/syscall.c
@@ -105,6 +105,7 @@ extern int sys_sbrk(void);
 extern int sys_unlink(void);
 extern int sys_wait(void);
 extern int sys_write(void);
+extern int sys_yield(void);
 
 static int (*syscalls[])(void) = {
 [SYS_chdir]   sys_chdir,
@@ -126,6 +127,7 @@ static int (*syscalls[])(void) = {
 [SYS_unlink]  sys_unlink,
 [SYS_wait]    sys_wait,
 [SYS_write]   sys_write,
+[SYS_yield]   sys_yield,
 };
 
 void