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>

1 files changed, 37 insertions, 0 deletions

diff --git a/arch/c6x/lib/llshl.S b/arch/c6x/lib/llshl.S
new file mode 100644
index 000000000000..7b105e2d1b78
--- /dev/null
+++ b/arch/c6x/lib/llshl.S
@@ -0,0 +1,37 @@
+;;  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_llshl(uint64_t val, uint shift)
+
+#include <linux/linkage.h>
+
+        .text
+ENTRY(__c6xabi_llshl)
+         mv     .l1x    B4,A1
+   [!A1] b      .s2     B3              ; just return if zero shift
+         mvk    .s1     32,A0
+         sub    .d1     A0,A1,A0
+         cmplt  .l1     0,A0,A2
+   [A2]  shru   .s1     A4,A0,A0
+   [!A2] neg    .l1     A0,A5
+|| [A2]  shl    .s1     A5,A1,A5
+   [!A2] shl    .s1     A4,A5,A5
+|| [A2]  or     .d1     A5,A0,A5
+|| [!A2] mvk    .l1     0,A4
+   [A2]  shl    .s1     A4,A1,A4
+         bnop   .s2     B3,5
+ENDPROC(__c6xabi_llshl)