/* * Copyright (c) 2005 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* Copyright (c) 1992, 1997 NeXT Software, Inc. All rights reserved. * * File: libc/gen/ppc/ffs.s * * Find the first bit set (starting with the least significant bit). * * HISTORY * * 24-Jan-1997 Umesh Vaishampayan (umeshv@NeXT.com) * Ported to PPC. * * 19-Jan-1998 Matt Watson (mwatson@apple.com) * Simplified * * 10-Mar-1998 Matt Watson (mwatson@apple.com) * Correctified * * 14-Nov-2005 Edward Moy * Convert ffs to ffsl * */ #include <architecture/ppc/mode_independent_asm.h> .text .align 2 .globl _ffsl _ffsl: neg r0,r3 and r3,r0,r3 cntlzg r3,r3 #ifdef __LP64__ subfic r3,r3,64 #else /* !__LP64__ */ subfic r3,r3,32 #endif /* __LP64__ */ blr