1*0a6a1f1dSLionel Sambuc/* $NetBSD: ctz.S,v 1.1 2014/09/03 19:34:25 matt Exp $ */ 2*0a6a1f1dSLionel Sambuc 3*0a6a1f1dSLionel Sambuc/*- 4*0a6a1f1dSLionel Sambuc * Copyright (C) 2001 Martin J. Laubach <mjl@NetBSD.org> 5*0a6a1f1dSLionel Sambuc * All rights reserved. 6*0a6a1f1dSLionel Sambuc * 7*0a6a1f1dSLionel Sambuc * Redistribution and use in source and binary forms, with or without 8*0a6a1f1dSLionel Sambuc * modification, are permitted provided that the following conditions 9*0a6a1f1dSLionel Sambuc * are met: 10*0a6a1f1dSLionel Sambuc * 1. Redistributions of source code must retain the above copyright 11*0a6a1f1dSLionel Sambuc * notice, this list of conditions and the following disclaimer. 12*0a6a1f1dSLionel Sambuc * 2. Redistributions in binary form must reproduce the above copyright 13*0a6a1f1dSLionel Sambuc * notice, this list of conditions and the following disclaimer in the 14*0a6a1f1dSLionel Sambuc * documentation and/or other materials provided with the distribution. 15*0a6a1f1dSLionel Sambuc * 3. The name of the author may not be used to endorse or promote products 16*0a6a1f1dSLionel Sambuc * derived from this software without specific prior written permission. 17*0a6a1f1dSLionel Sambuc * 18*0a6a1f1dSLionel Sambuc * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19*0a6a1f1dSLionel Sambuc * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20*0a6a1f1dSLionel Sambuc * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21*0a6a1f1dSLionel Sambuc * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22*0a6a1f1dSLionel Sambuc * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23*0a6a1f1dSLionel Sambuc * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24*0a6a1f1dSLionel Sambuc * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25*0a6a1f1dSLionel Sambuc * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26*0a6a1f1dSLionel Sambuc * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27*0a6a1f1dSLionel Sambuc * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28*0a6a1f1dSLionel Sambuc */ 29*0a6a1f1dSLionel Sambuc/*----------------------------------------------------------------------*/ 30*0a6a1f1dSLionel Sambuc 31*0a6a1f1dSLionel Sambuc#include <machine/asm.h> 32*0a6a1f1dSLionel Sambuc 33*0a6a1f1dSLionel Sambuc__RCSID("$NetBSD: ctz.S,v 1.1 2014/09/03 19:34:25 matt Exp $") 34*0a6a1f1dSLionel Sambuc 35*0a6a1f1dSLionel SambucENTRY_NP(__ctzsi2) 36*0a6a1f1dSLionel Sambuc#ifdef _LP64 37*0a6a1f1dSLionel Sambuc l.extwz r3, r3 38*0a6a1f1dSLionel Sambuc#endif 39*0a6a1f1dSLionel Sambuc l.ff1 r11, r3 40*0a6a1f1dSLionel Sambuc l.addi r11, r11, -1 41*0a6a1f1dSLionel Sambuc l.jr lr 42*0a6a1f1dSLionel Sambuc l.nop 43*0a6a1f1dSLionel SambucEND(__ctzsi2) 44*0a6a1f1dSLionel Sambuc 45*0a6a1f1dSLionel SambucENTRY_NP(__ctzdi2) 46*0a6a1f1dSLionel Sambuc#ifdef _LP64 47*0a6a1f1dSLionel Sambuc l.ff1 r11, r3 48*0a6a1f1dSLionel Sambuc l.addi r11, r11, -1 49*0a6a1f1dSLionel Sambuc l.jr lr 50*0a6a1f1dSLionel Sambuc l.nop 51*0a6a1f1dSLionel Sambuc#else 52*0a6a1f1dSLionel Sambuc l.sfeqi r4, 0 53*0a6a1f1dSLionel Sambuc l.bf 1f 54*0a6a1f1dSLionel Sambuc l.nop 55*0a6a1f1dSLionel Sambuc 56*0a6a1f1dSLionel Sambuc l.ff1 r11, r4 57*0a6a1f1dSLionel Sambuc l.addi r11, r11, -1 58*0a6a1f1dSLionel Sambuc l.jr lr 59*0a6a1f1dSLionel Sambuc l.nop 60*0a6a1f1dSLionel Sambuc 61*0a6a1f1dSLionel Sambuc1: l.sfeqi r3, 0 62*0a6a1f1dSLionel Sambuc l.addi r12, r0, 64 63*0a6a1f1dSLionel Sambuc l.ff1 r11, r3 64*0a6a1f1dSLionel Sambuc l.addi r11, r11, 31 65*0a6a1f1dSLionel Sambuc l.cmov r11, r12, r11 66*0a6a1f1dSLionel Sambuc l.jr lr 67*0a6a1f1dSLionel Sambuc l.nop 68*0a6a1f1dSLionel Sambuc#endif 69*0a6a1f1dSLionel SambucEND(__ctzdi2) 70