diff --git a/newlib/libc/sys/sh3eb/syscalls.c b/newlib/libc/sys/sh3eb/syscalls.c
index 6edb99bfc..77d5496d4 100644
--- a/newlib/libc/sys/sh3eb/syscalls.c
+++ b/newlib/libc/sys/sh3eb/syscalls.c
@@ -15,7 +15,7 @@ _read (int file,
        char *ptr,
        int len)
 {
-  return -1;
+  return len;
 }
 
 int
@@ -23,7 +23,7 @@ _lseek (int file,
 	int ptr,
 	int dir)
 {
-  return -1;
+  return 0;
 }
 
 int
@@ -38,7 +38,7 @@ _write ( int file,
 int
 _close (int file)
 {
-  return -1;
+  return 0;
 }
 
 int
@@ -58,7 +58,9 @@ int
 _fstat (int file,
 	struct stat *st)
 {
-  return -1;
+  /* All files are regarded as character special devices */
+  st->st_mode = S_IFCHR;
+  return 0;
 }
 
 int
@@ -83,9 +85,10 @@ _unlink ()
 }
 
 
-_isatty (fd)
-     int fd;
+int
+_isatty (int fd)
 {
+  /* Every output stream is a terminal */
   return 1;
 }
 
@@ -116,9 +119,9 @@ raise(int sig)
 
 int
 _stat (const char *path, struct stat *st)
-
 {
-  return -1;
+  st->st_mode = S_IFCHR;
+  return 0;
 }
 
 int