diff options
| author | Aurelien Jacquiot <a-jacquiot@ti.com> | 2011-10-04 11:15:51 -0400 |
|---|---|---|
| committer | Mark Salter <msalter@redhat.com> | 2011-10-06 19:48:23 -0400 |
| commit | 09831ca73443bd819ad7993db5409b19c899ba33 (patch) | |
| tree | 4558fb0a5e0e1fcd8582be2155cd9c7498e429db /arch/c6x/lib/llshru.S | |
| parent | a7f626c1948ab6178d2338831c5ffea7385e9f7f (diff) | |
C6X: library code
Original port to early 2.6 kernel using TI COFF toolchain.
Brought up to date by Mark Salter <msalter@redhat.com>
Signed-off-by: Aurelien Jacquiot <a-jacquiot@ti.com>
Signed-off-by: Mark Salter <msalter@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/c6x/lib/llshru.S')
| -rw-r--r-- | arch/c6x/lib/llshru.S | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/c6x/lib/llshru.S b/arch/c6x/lib/llshru.S new file mode 100644 index 00000000000..596ae3ff5c0 --- /dev/null +++ b/arch/c6x/lib/llshru.S @@ -0,0 +1,38 @@ +;; Copyright (C) 2010 Texas Instruments Incorporated +;; Contributed by Mark Salter <msalter@redhat.com>. +;; +;; This program is free software; you can redistribute it and/or modify +;; it under the terms of the GNU General Public License as published by +;; the Free Software Foundation; either version 2 of the License, or +;; (at your option) any later version. +;; +;; This program is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;; GNU General Public License for more details. +;; +;; You should have received a copy of the GNU General Public License +;; along with this program; if not, write to the Free Software +;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +;; uint64_t __c6xabi_llshru(uint64_t val, uint shift) + +#include <linux/linkage.h> + + .text +ENTRY(__c6xabi_llshru) + mv .l1x B4,A1 + [!A1] b .s2 B3 ; return if zero shift count + mvk .s1 32,A0 + sub .d1 A0,A1,A0 + cmplt .l1 0,A0,A2 + [A2] shl .s1 A5,A0,A0 + nop + [!A2] neg .l1 A0,A4 +|| [A2] shru .s1 A4,A1,A4 + [!A2] shru .s1 A5,A4,A4 +|| [A2] or .d1 A4,A0,A4 +|| [!A2] mvk .l1 0,A5 + [A2] shru .s1 A5,A1,A5 + bnop .s2 B3,5 +ENDPROC(__c6xabi_llshru) |