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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm26/lib/ashrdi3.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/arm26/lib/ashrdi3.c')
-rw-r--r--arch/arm26/lib/ashrdi3.c61
1 files changed, 61 insertions, 0 deletions
diff --git a/arch/arm26/lib/ashrdi3.c b/arch/arm26/lib/ashrdi3.c
new file mode 100644
index 000000000000..71625d218f8d
--- /dev/null
+++ b/arch/arm26/lib/ashrdi3.c
@@ -0,0 +1,61 @@
1/* More subroutines needed by GCC output code on some machines. */
2/* Compile this one with gcc. */
3/* Copyright (C) 1989, 92-98, 1999 Free Software Foundation, Inc.
4
5This file is part of GNU CC.
6
7GNU CC is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 2, or (at your option)
10any later version.
11
12GNU CC is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with GNU CC; see the file COPYING. If not, write to
19the Free Software Foundation, 59 Temple Place - Suite 330,
20Boston, MA 02111-1307, USA. */
21
22/* As a special exception, if you link this library with other files,
23 some of which are compiled with GCC, to produce an executable,
24 this library does not by itself cause the resulting executable
25 to be covered by the GNU General Public License.
26 This exception does not however invalidate any other reasons why
27 the executable file might be covered by the GNU General Public License.
28 */
29/* support functions required by the kernel. based on code from gcc-2.95.3 */
30/* I Molton 29/07/01 */
31
32#include "gcclib.h"
33
34DItype
35__ashrdi3 (DItype u, word_type b)
36{
37 DIunion w;
38 word_type bm;
39 DIunion uu;
40
41 if (b == 0)
42 return u;
43
44 uu.ll = u;
45
46 bm = (sizeof (SItype) * BITS_PER_UNIT) - b;
47 if (bm <= 0)
48 {
49 /* w.s.high = 1..1 or 0..0 */
50 w.s.high = uu.s.high >> (sizeof (SItype) * BITS_PER_UNIT - 1);
51 w.s.low = uu.s.high >> -bm;
52 }
53 else
54 {
55 USItype carries = (USItype)uu.s.high << bm;
56 w.s.high = uu.s.high >> b;
57 w.s.low = ((USItype)uu.s.low >> b) | carries;
58 }
59
60 return w.ll;
61}