usr/src/old/dbx/cerror.tahoe.s

/*
 * Copyright (c) 1985 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 *
 *      @(#)cerror.tahoe.s      5.2 (Berkeley) %G%
 *
 *
 * modified version of cerror
 *
 * The idea is that every time an error occurs in a system call
 * I want a special function "syserr" called.  This function will
 * either print a message and exit or do nothing depending on
 * defaults and use of "onsyserr".
 */

.globl  cerror
.comm   _errno,4

cerror:
        movl    r0,_errno
        callf   $0,_syserr      /* new code */
        mnegl   $1,r0
        ret

.globl  __mycerror              /* clumsy way to get this loaded */

__mycerror:
        .word   0
        ret