sdivsi3.S revision 1.7.2.2
1 1.7.2.2 elad /* $NetBSD: sdivsi3.S,v 1.7.2.2 2006/05/11 23:31:08 elad Exp $ */ 2 1.7.2.2 elad 3 1.7.2.2 elad /*- 4 1.7.2.2 elad * Copyright (c) 1990 The Regents of the University of California. 5 1.7.2.2 elad * All rights reserved. 6 1.7.2.2 elad * 7 1.7.2.2 elad * This code is derived from software contributed to Berkeley by 8 1.7.2.2 elad * William Jolitz. 9 1.7.2.2 elad * 10 1.7.2.2 elad * Redistribution and use in source and binary forms, with or without 11 1.7.2.2 elad * modification, are permitted provided that the following conditions 12 1.7.2.2 elad * are met: 13 1.7.2.2 elad * 1. Redistributions of source code must retain the above copyright 14 1.7.2.2 elad * notice, this list of conditions and the following disclaimer. 15 1.7.2.2 elad * 2. Redistributions in binary form must reproduce the above copyright 16 1.7.2.2 elad * notice, this list of conditions and the following disclaimer in the 17 1.7.2.2 elad * documentation and/or other materials provided with the distribution. 18 1.7.2.2 elad * 3. Neither the name of the University nor the names of its contributors 19 1.7.2.2 elad * may be used to endorse or promote products derived from this software 20 1.7.2.2 elad * without specific prior written permission. 21 1.7.2.2 elad * 22 1.7.2.2 elad * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 1.7.2.2 elad * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 1.7.2.2 elad * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 1.7.2.2 elad * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 1.7.2.2 elad * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 1.7.2.2 elad * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 1.7.2.2 elad * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 1.7.2.2 elad * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 1.7.2.2 elad * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 1.7.2.2 elad * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 1.7.2.2 elad * SUCH DAMAGE. 33 1.7.2.2 elad * 34 1.7.2.2 elad * from: @(#)udivsi3.s 5.1 (Berkeley) 5/15/90 35 1.7.2.2 elad */ 36 1.7.2.2 elad 37 1.7.2.2 elad #include <machine/asm.h> 38 1.7.2.2 elad #if defined(LIBC_SCCS) 39 1.7.2.2 elad RCSID("$NetBSD: sdivsi3.S,v 1.7.2.2 2006/05/11 23:31:08 elad Exp $") 40 1.7.2.2 elad #endif 41 1.7.2.2 elad 42 1.7.2.2 elad #ifdef PIC /* XXX: uwe */ 43 1.7.2.2 elad .hidden __sdivsi3 44 1.7.2.2 elad #endif 45 1.7.2.2 elad 46 1.7.2.2 elad /* r0 <= r4 / r5 */ 47 1.7.2.2 elad NENTRY(__sdivsi3) 48 1.7.2.2 elad mov r4, r0 49 1.7.2.2 elad mov r5, r1 50 1.7.2.2 elad 51 1.7.2.2 elad tst r1, r1 52 1.7.2.2 elad bt div_by_zero 53 1.7.2.2 elad 54 1.7.2.2 elad mov #0, r2 55 1.7.2.2 elad div0s r2, r0 56 1.7.2.2 elad subc r3, r3 57 1.7.2.2 elad subc r2, r0 58 1.7.2.2 elad div0s r1, r3 59 1.7.2.2 elad #define DIVSTEP rotcl r0; div1 r1, r3 60 1.7.2.2 elad /* repeat 32 times */ 61 1.7.2.2 elad DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; 62 1.7.2.2 elad DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; 63 1.7.2.2 elad DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; 64 1.7.2.2 elad DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; DIVSTEP; 65 1.7.2.2 elad #undef DIVSTEP 66 1.7.2.2 elad rotcl r0 67 1.7.2.2 elad 68 1.7.2.2 elad rts 69 1.7.2.2 elad addc r2, r0 70 1.7.2.2 elad 71 1.7.2.2 elad div_by_zero: 72 1.7.2.2 elad #ifdef _KERNEL 73 1.7.2.2 elad rts 74 1.7.2.2 elad mov #0, r0 75 1.7.2.2 elad #else 76 1.7.2.2 elad mov.l r14, @-r15 77 1.7.2.2 elad sts.l pr, @-r15 78 1.7.2.2 elad mov r15, r14 79 1.7.2.2 elad 80 1.7.2.2 elad mov.l L_raise, r1 81 1.7.2.2 elad #ifdef PIC 82 1.7.2.2 elad 1: bsrf r1 83 1.7.2.2 elad #else 84 1.7.2.2 elad jsr @r1 85 1.7.2.2 elad #endif 86 1.7.2.2 elad mov #8, r4 /* delay slot. 8 <- SIGFPE. */ 87 1.7.2.2 elad mov #0, r0 88 1.7.2.2 elad 89 1.7.2.2 elad lds.l @r15+, pr 90 1.7.2.2 elad rts 91 1.7.2.2 elad mov.l @r15+, r14 92 1.7.2.2 elad 93 1.7.2.2 elad .align 2 94 1.7.2.2 elad L_raise: 95 1.7.2.2 elad #ifdef PIC 96 1.7.2.2 elad .long _C_LABEL(raise)-(1b+4) 97 1.7.2.2 elad #else 98 1.7.2.2 elad .long _C_LABEL(raise) 99 1.7.2.2 elad #endif 100 1.7.2.2 elad #endif 101
Indexes created Wed Oct 01 15:09:59 GMT 2025