diff options
Diffstat (limited to 'ports/sysdeps/vax/strcpy.s')
| -rw-r--r-- | ports/sysdeps/vax/strcpy.s | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/ports/sysdeps/vax/strcpy.s b/ports/sysdeps/vax/strcpy.s new file mode 100644 index 000000000..1eb00ba6c --- /dev/null +++ b/ports/sysdeps/vax/strcpy.s @@ -0,0 +1,58 @@ +/* + * Copyright (c) 1983 Regents of the University of California. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) + .asciz "@(#)strcpy.s 5.6 (Berkeley) 6/1/90" +#endif /* LIBC_SCCS and not lint */ + +/* + * Copy string s2 over top of s1. + * Return base of s1. + * + * char * + * strcpy(s1, s2) + * char *s1, *s2; + */ +#include "DEFS.h" + +ENTRY(strcpy, R6) + movl 4(ap), r3 # r3 = s1 + movl 8(ap), r6 # r6 = s2 +1: + locc $0,$65535,(r6) # find length of s2 + bneq 2f + movc3 $65535,(r6),(r3)# copy full block + movl r1,r6 + jbr 1b +2: + subl2 r6,r1 # calculate length + incl r1 + movc3 r1,(r6),(r3) # copy remainder + movl 4(ap),r0 # return base of s1 + ret |