mirror of https://gitee.com/openkylin/linux.git
58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
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/* More subroutines needed by GCC output code on some machines. */
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/* Compile this one with gcc. */
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/* Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
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2000, 2001 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public Licence as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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In addition to the permissions in the GNU General Public Licence, the
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Free Software Foundation gives you unlimited permission to link the
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compiled version of this file into combinations with other programs,
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and to distribute those combinations without any restriction coming
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from the use of this file. (The General Public Licence restrictions
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do apply in other respects; for example, they cover modification of
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the file, and distribution when not linked into a combine
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executable.)
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public Licence for more details.
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You should have received a copy of the GNU General Public Licence
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* It is incorrect to include config.h here, because this file is being
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compiled for the target, and hence definitions concerning only the host
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do not apply. */
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#include <linux/types.h>
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union DWunion {
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s64 ll;
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struct {
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s32 low;
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s32 high;
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} s;
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};
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s64 __negdi2(s64 u)
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{
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union DWunion w;
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union DWunion uu;
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uu.ll = u;
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w.s.low = -uu.s.low;
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w.s.high = -uu.s.high - ((u32) w.s.low > 0);
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return w.ll;
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}
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