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Annotation of 43BSDTahoe/lib/libc/gen/gen.tahoe/bcmp.s, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1988 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms are permitted
                      6:  * provided that the above copyright notice and this paragraph are
                      7:  * duplicated in all such forms and that any documentation,
                      8:  * advertising materials, and other materials related to such
                      9:  * distribution and use acknowledge that the software was developed
                     10:  * by the University of California, Berkeley.  The name of the
                     11:  * University may not be used to endorse or promote products derived
                     12:  * from this software without specific prior written permission.
                     13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     16:  *
                     17:  * This code is derived from software contributed to Berkeley by
                     18:  * Computer Consoles Inc.
                     19:  */
                     20: 
                     21: #if defined(LIBC_SCCS) && !defined(lint)
                     22:        .asciz "@(#)bcmp.s      1.3 (Berkeley) 6/27/88"
                     23: #endif /* LIBC_SCCS and not lint */
                     24: 
                     25: /* bcmp(s1, s2, n) */
                     26: /* compare exactly 'n' */
                     27: #include "DEFS.h"
                     28: 
                     29: ENTRY(bcmp, 0)
                     30:        movl    4(fp),r0
                     31:        movl    8(fp),r1
                     32:        mnegl   12(fp),r2
                     33:        jeql    3f
                     34: 1:
                     35:        cmpb    (r0),(r1)
                     36:        jneq    2f
                     37:        incl    r0
                     38:        incl    r1
                     39:        aoblss  $0,r2,1b
                     40: 3:
                     41:        clrl    r0
                     42:        ret
                     43: 2:
                     44:        movl    $1,r0
                     45:        ret

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