u-boot/arch/arm/lib/_ashrdi3.S

/* 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.

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#ifdef __ARMEB__
#define al r1
#define ah r0
#else
#define al r0
#define ah r1
#endif

.globl __ashrdi3
.globl __aeabi_lasr
__ashrdi3:
__aeabi_lasr:

	subs	r3, r2, #32
	rsb	ip, r2, #32
	movmi	al, al, lsr r2
	movpl	al, ah, asr r3
	orrmi	al, al, ah, lsl ip
	mov	ah, ah, asr r2
	mov	pc, lr