summaryrefslogtreecommitdiffstats
path: root/kernel/arch/arm/lib/ashrdi3.S
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/arch/arm/lib/ashrdi3.S')
-rw-r--r--kernel/arch/arm/lib/ashrdi3.S54
1 files changed, 54 insertions, 0 deletions
diff --git a/kernel/arch/arm/lib/ashrdi3.S b/kernel/arch/arm/lib/ashrdi3.S
new file mode 100644
index 000000000..275d7d234
--- /dev/null
+++ b/kernel/arch/arm/lib/ashrdi3.S
@@ -0,0 +1,54 @@
+/* Copyright 1995, 1996, 1998, 1999, 2000, 2003, 2004, 2005
+ Free Software Foundation, Inc.
+
+This file 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, or (at your option) any
+later version.
+
+In addition to the permissions in the GNU General Public License, the
+Free Software Foundation gives you unlimited permission to link the
+compiled version of this file into combinations with other programs,
+and to distribute those combinations without any restriction coming
+from the use of this file. (The General Public License restrictions
+do apply in other respects; for example, they cover modification of
+the file, and distribution when not linked into a combine
+executable.)
+
+This file 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; see the file COPYING. If not, write to
+the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
+
+
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+
+#ifdef __ARMEB__
+#define al r1
+#define ah r0
+#else
+#define al r0
+#define ah r1
+#endif
+
+ENTRY(__ashrdi3)
+ENTRY(__aeabi_lasr)
+
+ subs r3, r2, #32
+ rsb ip, r2, #32
+ movmi al, al, lsr r2
+ movpl al, ah, asr r3
+ ARM( orrmi al, al, ah, lsl ip )
+ THUMB( lslmi r3, ah, ip )
+ THUMB( orrmi al, al, r3 )
+ mov ah, ah, asr r2
+ ret lr
+
+ENDPROC(__ashrdi3)
+ENDPROC(__aeabi_lasr)