sdivsi3.S revision 1.8.2.2
1 1.8.2.2 tron /* $NetBSD: sdivsi3.S,v 1.8.2.2 2006/05/24 15:50:42 tron Exp $ */ 2 1.8.2.2 tron 3 1.8.2.2 tron /*- 4 1.8.2.2 tron * Copyright (c) 1990 The Regents of the University of California. 5 1.8.2.2 tron * All rights reserved. 6 1.8.2.2 tron * 7 1.8.2.2 tron * This code is derived from software contributed to Berkeley by 8 1.8.2.2 tron * William Jolitz. 9 1.8.2.2 tron * 10 1.8.2.2 tron * Redistribution and use in source and binary forms, with or without 11 1.8.2.2 tron * modification, are permitted provided that the following conditions 12 1.8.2.2 tron * are met: 13 1.8.2.2 tron * 1. Redistributions of source code must retain the above copyright 14 1.8.2.2 tron * notice, this list of conditions and the following disclaimer. 15 1.8.2.2 tron * 2. Redistributions in binary form must reproduce the above copyright 16 1.8.2.2 tron * notice, this list of conditions and the following disclaimer in the 17 1.8.2.2 tron * documentation and/or other materials provided with the distribution. 18 1.8.2.2 tron * 3. Neither the name of the University nor the names of its contributors 19 1.8.2.2 tron * may be used to endorse or promote products derived from this software 20 1.8.2.2 tron * without specific prior written permission. 21 1.8.2.2 tron * 22 1.8.2.2 tron * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 1.8.2.2 tron * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 1.8.2.2 tron * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 1.8.2.2 tron * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 1.8.2.2 tron * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 1.8.2.2 tron * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 1.8.2.2 tron * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 1.8.2.2 tron * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 1.8.2.2 tron * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 1.8.2.2 tron * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 1.8.2.2 tron * SUCH DAMAGE. 33 1.8.2.2 tron * 34 1.8.2.2 tron * from: @(#)udivsi3.s 5.1 (Berkeley) 5/15/90 35 1.8.2.2 tron */ 36 1.8.2.2 tron 37 1.8.2.2 tron #include <machine/asm.h> 38 1.8.2.2 tron #if defined(LIBC_SCCS) 39 1.8.2.2 tron RCSID("$NetBSD: sdivsi3.S,v 1.8.2.2 2006/05/24 15:50:42 tron Exp $") 40 1.8.2.2 tron #endif 41 1.8.2.2 tron 42 1.8.2.2 tron 43 1.8.2.2 tron /* r0 <= r4 / r5 */ 44 1.8.2.2 tron NENTRY(__sdivsi3) 45 1.8.2.2 tron mov r4, r0 46 1.8.2.2 tron mov r5, r1 47 1.8.2.2 tron 48 1.8.2.2 tron tst r1, r1 49 1.8.2.2 tron bt div_by_zero 50 1.8.2.2 tron 51 1.8.2.2 tron mov #0, r2 52 1.8.2.2 tron div0s r2, r0 53 1.8.2.2 tron subc r3, r3 54 1.8.2.2 tron subc r2, r0 55 1.8.2.2 tron div0s r1, r3 56 1.8.2.2 tron #define DIVSTEP rotcl r0; div1 r1, r3 57 1.8.2.2 tron /* repeat 32 times */ 58 1.8.2.2 tron DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; 59 1.8.2.2 tron DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; 60 1.8.2.2 tron DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; 61 1.8.2.2 tron DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; 62 1.8.2.2 tron #undef DIVSTEP 63 1.8.2.2 tron rotcl r0 64 1.8.2.2 tron 65 1.8.2.2 tron rts 66 1.8.2.2 tron addc r2, r0 67 1.8.2.2 tron 68 1.8.2.2 tron div_by_zero: 69 1.8.2.2 tron #ifdef _KERNEL 70 1.8.2.2 tron rts 71 1.8.2.2 tron mov #0, r0 72 1.8.2.2 tron #else 73 1.8.2.2 tron mov.l r14, @-r15 74 1.8.2.2 tron sts.l pr, @-r15 75 1.8.2.2 tron mov r15, r14 76 1.8.2.2 tron 77 1.8.2.2 tron mov.l L_raise, r1 78 1.8.2.2 tron #ifdef PIC 79 1.8.2.2 tron 1: bsrf r1 80 1.8.2.2 tron #else 81 1.8.2.2 tron jsr @r1 82 1.8.2.2 tron #endif 83 1.8.2.2 tron mov #8, r4 /* delay slot. 8 <- SIGFPE. */ 84 1.8.2.2 tron mov #0, r0 85 1.8.2.2 tron 86 1.8.2.2 tron lds.l @r15+, pr 87 1.8.2.2 tron rts 88 1.8.2.2 tron mov.l @r15+, r14 89 1.8.2.2 tron 90 1.8.2.2 tron .align 2 91 1.8.2.2 tron L_raise: 92 1.8.2.2 tron #ifdef PIC 93 1.8.2.2 tron .long _C_LABEL(raise)-(1b+4) 94 1.8.2.2 tron #else 95 1.8.2.2 tron .long _C_LABEL(raise) 96 1.8.2.2 tron #endif 97 1.8.2.2 tron #endif 98
Indexes created Wed Oct 01 15:09:59 GMT 2025