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- /*-
- * Copyright (c) 1985 The Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Computer Consoles Inc.
- *
- * 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.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 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.
- *
- * @(#)Kcmpd.s 7.1 (Berkeley) 12/6/90
- */
-
- #include "../tahoe/SYS.h"
-
- /*
- * cmpd(hi1, lo1, hi2, lo2)
- * register hi1, hi2;
- * register unsigned lo1, lo2;
- *{
- * if(hi1 < 0) {
- * hi1 ^= 0x80000000;
- * if(lo1) {
- * lo1 = -lo1;
- * hi1 = ~hi1;
- * } else
- * hi1 = -hi1;
- * }
- * if(hi2 < 0) {
- * hi2 ^= 0x80000000;
- * if(lo2) {
- * lo2 = -lo2;
- * hi2 = ~hi2;
- * } else
- * hi2 = -hi2;
- * }
- * if(hi1 != hi2)
- * return(hi1>hi2 ? 1 : -1);
- * if(lo1 != lo2)
- * return(lo1>lo2 ? 1 : -1);
- * return(0);
- *}
- */
- .text
- ENTRY(Kcmpd, 0)
- movl 8(fp),r3
- movl 12(fp),r4
- movl 16(fp),r2
- movl 4(fp),r5
- jgeq 1f
- xorl2 $0x80000000,r5
- tstl r3
- jeql 2f
- mnegl r3,r3
- mcoml r5,r5
- jbr 1f
- 2:
- mnegl r5,r5
- 1:
- tstl r4
- jgeq 1f
- xorl2 $0x80000000,r4
- tstl r2
- jeql 2f
- mnegl r2,r2
- mcoml r4,r4
- jbr 1f
- 2:
- mnegl r4,r4
- 1:
- cmpl r5,r4
- jeql 1f
- jleq 2f
- movl $1,r0
- ret
- 2:
- mnegl $1,r0
- ret
- 1:
- cmpl r3,r2
- jeql 1f
- jlequ 2f
- movl $1,r0
- ret
- 2:
- mnegl $1,r0
- ret
- 1:
- clrl r0
- ret
-