diff --git a/newlib/libc/sys/sh3eb/syscalls.c b/newlib/libc/sys/sh3eb/syscalls.c
index 0d521290b..6edb99bfc 100644
--- a/newlib/libc/sys/sh3eb/syscalls.c
+++ b/newlib/libc/sys/sh3eb/syscalls.c
@@ -82,11 +82,6 @@ _unlink ()
   return -1;
 }
 
-isatty (fd)
-     int fd;
-{
-  return 1;
-}
 
 _isatty (fd)
      int fd;
@@ -100,19 +95,23 @@ _exit (n)
   return -1;
 }
 
-_kill (n, m)
+int
+_kill (int pid, int sig)
 {
   errno = EINVAL;
   return -1;
 }
 
-_getpid (n)
+int
+getpid (void)
 {
   return 1;
 }
 
-_raise ()
+int
+raise(int sig)
 {
+  return -1;
 }
 
 int
@@ -192,12 +191,6 @@ _gettimeofday (struct timeval *tv, void *tz)
   return -1;
 }
 
-static inline int
-__setup_argv_for_main (int argc)
-{
-  return -1;
-}
-
 int
 __setup_argv_and_call_main ()
 {