diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/frv/lib/__ashrdi3.S |
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/frv/lib/__ashrdi3.S')
-rw-r--r-- | arch/frv/lib/__ashrdi3.S | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/frv/lib/__ashrdi3.S b/arch/frv/lib/__ashrdi3.S new file mode 100644 index 000000000000..5742665bfd29 --- /dev/null +++ b/arch/frv/lib/__ashrdi3.S | |||
@@ -0,0 +1,41 @@ | |||
1 | /* __ashrdi3.S: 64-bit arithmetic shift right | ||
2 | * | ||
3 | * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. | ||
4 | * Written by David Howells (dhowells@redhat.com) | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or | ||
7 | * modify it under the terms of the GNU General Public License | ||
8 | * as published by the Free Software Foundation; either version | ||
9 | * 2 of the License, or (at your option) any later version. | ||
10 | */ | ||
11 | |||
12 | .text | ||
13 | .p2align 4 | ||
14 | |||
15 | ############################################################################### | ||
16 | # | ||
17 | # signed long long __ashrdi3(signed long long value [GR8:GR9], unsigned by [GR10]) | ||
18 | # | ||
19 | ############################################################################### | ||
20 | .globl __ashrdi3 | ||
21 | .type __ashrdi3,@function | ||
22 | __ashrdi3: | ||
23 | andicc.p gr10,#63,gr10,icc0 | ||
24 | setlos #32,gr5 | ||
25 | andicc.p gr10,#32,gr0,icc1 | ||
26 | beqlr icc0,#0 | ||
27 | setlos.p #31,gr6 | ||
28 | ckeq icc1,cc4 ; cc4 is true if 0<N<32 | ||
29 | |||
30 | # deal with a shift in the range 1<=N<=31 | ||
31 | csrl.p gr9,gr10,gr9 ,cc4,#1 ; LSW >>= N | ||
32 | csub gr5,gr10,gr5 ,cc4,#1 ; M = 32 - N | ||
33 | csll.p gr8,gr5,gr4 ,cc4,#1 | ||
34 | csra gr8,gr10,gr8 ,cc4,#1 ; MSW >>= N | ||
35 | cor.p gr4,gr9,gr9 ,cc4,#1 ; LSW |= MSW << M | ||
36 | |||
37 | # deal with a shift in the range 32<=N<=63 | ||
38 | csra gr8,gr10,gr9 ,cc4,#0 ; LSW = MSW >> (N & 31 [implicit AND]) | ||
39 | csra.p gr8,gr6,gr8 ,cc4,#0 ; MSW >>= 31 | ||
40 | bralr | ||
41 | .size __ashrdi3, .-__ashrdi3 | ||