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kernel/linux-imx6_3.14.28/arch/arm/lib/ashldi3.S 1.62 KB
6b13f685e   김민수   BSP 최초 추가
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  /* 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(__ashldi3)
  ENTRY(__aeabi_llsl)
  
  	subs	r3, r2, #32
  	rsb	ip, r2, #32
  	movmi	ah, ah, lsl r2
  	movpl	ah, al, lsl r3
   ARM(	orrmi	ah, ah, al, lsr ip	)
   THUMB(	lsrmi	r3, al, ip		)
   THUMB(	orrmi	ah, ah, r3		)
  	mov	al, al, lsl r2
  	mov	pc, lr
  
  ENDPROC(__ashldi3)
  ENDPROC(__aeabi_llsl)