Re: libgloss c99 fixes for mn10300-elf

Very similar to other patches in this space.  Avoid implicit int types and add
missing #includes so that this code works with gcc-14.

libgloss/mn10300/_exit.c

@@ -18,7 +18,7 @@ static void _do_dtors()
 }
 
 
-void _exit (n)
+void _exit (int n)
 {
   /* Destructors should be done earlier because they need to be done before the
      files are closed, but here is better than nowhere (and this balances the

libgloss/mn10300/getpid.c

@@ -4,7 +4,8 @@
 #include "trap.h"
 
 
-_getpid (n)
+int
+_getpid (int n)
 {
   return 1;
 }

libgloss/mn10300/isatty.c

@@ -4,8 +4,8 @@
 #include "trap.h"
 
 
-_isatty (fd)
-     int fd;
+int
+_isatty (int fd)
 {
   return 1;
 }

libgloss/mn10300/kill.c

@@ -4,7 +4,8 @@
 #include "trap.h"
 
 
-_kill (n, m)
+int
+_kill (int n, int m)
 {
   return TRAP0 (SYS_exit, 0xdead, 0, 0);
 }

libgloss/mn10300/read.c

@@ -4,6 +4,7 @@
 #include "trap.h"
 
 
+int
 _read (int file,
        char *ptr,
        size_t len)

libgloss/mn10300/sbrk.c

@@ -1,8 +1,11 @@
 #include <_ansi.h>
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <stdlib.h>
 #include "trap.h"
 
+extern int _write (int, char *, size_t);
+
 
 caddr_t
 _sbrk (size_t incr)

libgloss/mn10300/test.c

@@ -1,4 +1,6 @@
 #include <stdio.h>
+#include <unistd.h>
+#include <string.h>
 
 static void
 send_msg1 (void)