arm: add _lshrdi3.S

Signed-off-by: Heiko Schocher <hs@denx.de>

diff --git a/lib_arm/Makefile b/lib_arm/Makefile
index 241782c..c37e2e0 100644 (file)
--- a/lib_arm/Makefile
+++ b/lib_arm/Makefile
@@ -29,6 +29,7 @@ LIBGCC        = $(obj)libgcc.a
 GLSOBJS        += _ashldi3.o
 GLSOBJS        += _ashrdi3.o
 GLSOBJS        += _divsi3.o
+GLSOBJS        += _lshrdi3.o
 GLSOBJS        += _modsi3.o
 GLSOBJS        += _udivsi3.o
 GLSOBJS        += _umodsi3.o

diff --git a/lib_arm/_lshrdi3.S b/lib_arm/_lshrdi3.S
new file mode 100644 (file)
index 0000000..fabfd9f
--- /dev/null
+++ b/lib_arm/_lshrdi3.S
@@ -0,0 +1,46 @@
+/* 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.  */
+
+
+#ifdef __ARMEB__
+#define al r1
+#define ah r0
+#else
+#define al r0
+#define ah r1
+#endif
+
+.globl __lshrdi3
+__lshrdi3:
+
+       subs    r3, r2, #32
+       rsb     ip, r2, #32
+       movmi   al, al, lsr r2
+       movpl   al, ah, lsr r3
+       orrmi   al, al, ah, lsl ip
+       mov     ah, ah, lsr r2
+       mov     pc, lr