b920de1b77
Add architecture support for the MN10300/AM33 CPUs produced by MEI to the kernel. This patch also adds board support for the ASB2303 with the ASB2308 daughter board, and the ASB2305. The only processor supported is the MN103E010, which is an AM33v2 core plus on-chip devices. [akpm@linux-foundation.org: nuke cvs control strings] Signed-off-by: Masakazu Urade <urade.masakazu@jp.panasonic.com> Signed-off-by: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/* ashrdi3.c extracted from gcc-2.7.2/libgcc2.c which is: */
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/* Copyright (C) 1989, 1992, 1993, 1994, 1995 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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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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#define BITS_PER_UNIT 8
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typedef int SItype __attribute__((mode(SI)));
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typedef unsigned int USItype __attribute__((mode(SI)));
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typedef int DItype __attribute__((mode(DI)));
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typedef int word_type __attribute__((mode(__word__)));
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struct DIstruct {
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SItype low;
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SItype high;
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};
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union DIunion {
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struct DIstruct s;
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DItype ll;
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};
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DItype __ashrdi3(DItype u, word_type b)
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{
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union DIunion w;
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union DIunion uu;
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word_type bm;
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if (b == 0)
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return u;
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uu.ll = u;
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bm = (sizeof(SItype) * BITS_PER_UNIT) - b;
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if (bm <= 0) {
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/* w.s.high = 1..1 or 0..0 */
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w.s.high = uu.s.high >> (sizeof(SItype) * BITS_PER_UNIT - 1);
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w.s.low = uu.s.high >> -bm;
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} else {
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USItype carries = (USItype)uu.s.high << bm;
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w.s.high = uu.s.high >> b;
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w.s.low = ((USItype)uu.s.low >> b) | carries;
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}
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return w.ll;
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}
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