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author | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2011-01-14 16:44:19 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2011-01-17 08:28:08 +0100 |
commit | d62f8241d3b8dbb8bec05d3d4f7580631b3f9690 (patch) | |
tree | 11fe73ae9134caed9c8a10ed54660038d400c285 /arch/arm/lib/lshrdi3.S | |
parent | 643ffef5f4a193208bfb257cf84533f02f849f67 (diff) | |
download | barebox-d62f8241d3b8dbb8bec05d3d4f7580631b3f9690.tar.gz barebox-d62f8241d3b8dbb8bec05d3d4f7580631b3f9690.tar.xz |
arm: libgcc update to linux v2.6.37
This patch removes the inclusion of libgcc functions into Barebox on the ARM
architecture. Only the really needed functions are provided in the lib_arm
directory. Those implementations are copied from Linux where they are well
proven related to reliably, performance.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/lib/lshrdi3.S')
-rw-r--r-- | arch/arm/lib/lshrdi3.S | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/arch/arm/lib/lshrdi3.S b/arch/arm/lib/lshrdi3.S new file mode 100644 index 0000000000..f83d449141 --- /dev/null +++ b/arch/arm/lib/lshrdi3.S @@ -0,0 +1,53 @@ +/* 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> + +#ifdef __ARMEB__ +#define al r1 +#define ah r0 +#else +#define al r0 +#define ah r1 +#endif + +ENTRY(__lshrdi3) +ENTRY(__aeabi_llsr) + + subs r3, r2, #32 + rsb ip, r2, #32 + movmi al, al, lsr r2 + movpl al, ah, lsr r3 + ARM( orrmi al, al, ah, lsl ip ) + THUMB( lslmi r3, ah, ip ) + THUMB( orrmi al, al, r3 ) + mov ah, ah, lsr r2 + mov pc, lr + +ENDPROC(__lshrdi3) +ENDPROC(__aeabi_llsr) |