1/* More subroutines needed by GCC output code on some machines. */ 2/* Compile this one with gcc. */ 3/* Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 4 2000, 2001 Free Software Foundation, Inc. 5 6This file is part of GNU CC. 7 8GNU CC is free software; you can redistribute it and/or modify 9it under the terms of the GNU General Public Licence as published by 10the Free Software Foundation; either version 2, or (at your option) 11any later version. 12 13In addition to the permissions in the GNU General Public Licence, the 14Free Software Foundation gives you unlimited permission to link the 15compiled version of this file into combinations with other programs, 16and to distribute those combinations without any restriction coming 17from the use of this file. (The General Public Licence restrictions 18do apply in other respects; for example, they cover modification of 19the file, and distribution when not linked into a combine 20executable.) 21 22GNU CC is distributed in the hope that it will be useful, 23but WITHOUT ANY WARRANTY; without even the implied warranty of 24MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 25GNU General Public Licence for more details. 26 27You should have received a copy of the GNU General Public Licence 28along with GNU CC; see the file COPYING. If not, write to 29the Free Software Foundation, 59 Temple Place - Suite 330, 30Boston, MA 02111-1307, USA. */ 31 32/* It is incorrect to include config.h here, because this file is being 33 compiled for the target, and hence definitions concerning only the host 34 do not apply. */ 35 36#include <linux/types.h> 37 38union DWunion { 39 s64 ll; 40 struct { 41 s32 low; 42 s32 high; 43 } s; 44}; 45 46s64 __negdi2(s64 u) 47{ 48 union DWunion w; 49 union DWunion uu; 50 51 uu.ll = u; 52 53 w.s.low = -uu.s.low; 54 w.s.high = -uu.s.high - ((u32) w.s.low > 0); 55 56 return w.ll; 57} 58