glibc/sysdeps/powerpc/rshift.S
Ulrich Drepper 217eb19b6f Update.
1999-10-11  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/powerpc/Makefile [math] (libm-support): Remove t_sqrt.

	* sysdeps/powerpc/e_sqrt.c: Moved to...
	* sysdeps/powerpc/fpu/e_sqrt.c: ...here.
	* sysdeps/powerpc/e_sqrtf.c: Moved to...
	* sysdeps/powerpc/fpu/e_sqrtf.c: ...here.

	* sysdeps/powerpc/submul_1.S: Adjust asm syntax.
	* sysdeps/powerpc/sub_n.S: Likewise.
	* sysdeps/powerpc/strlen.S: Likewise.
	* sysdeps/powerpc/strcpy.S: Likewise.
	* sysdeps/powerpc/strcmp.S: Likewise.
	* sysdeps/powerpc/strchr.S: Likewise.
	* sysdeps/powerpc/stpcpy.S: Likewise.
	* sysdeps/powerpc/setjmp.S: Likewise.
	* sysdeps/powerpc/rshift.S: Likewise.
	* sysdeps/powerpc/ppc-mcount.S: Likewise.
	* sysdeps/powerpc/mul_1.S: Likewise.
	* sysdeps/powerpc/memset.S: Likewise.
	* sysdeps/powerpc/lshift.S: Likewise.
	* sysdeps/powerpc/dl-start.S: Likewise.
	* sysdeps/powerpc/bzero.S: Likewise.
	* sysdeps/powerpc/bsd-setjmp.S: Likewise.
	* sysdeps/powerpc/bsd-_setjmp.S: Likewise.
	* sysdeps/powerpc/addmul_1.S: Likewise.
	* sysdeps/powerpc/add_n.S: Likewise.
	* sysdeps/powerpc/__longjmp.S: Likewise.
	* sysdeps/powerpc/elf/start.S: Likewise.

1999-10-11  Cristian Gafton  <gafton@redhat.com>

	* sysdeps/unix/sysv/linux/alpha/bits/sigaction.h: Declare
1999-10-11 22:31:36 +00:00

57 lines
1.5 KiB
ArmAsm

/* Shift a limb right, low level routine.
Copyright (C) 1995, 1997, 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <sysdep.h>
/* INPUT PARAMETERS
res_ptr r3
s1_ptr r4
size r5
cnt r6 */
ENTRY(__mpn_rshift)
mtctr r5 # copy size into CTR
addi r7,r3,-4 # move adjusted res_ptr to free return reg
subfic r8,r6,32
lwz r11,0(r4) # load first s1 limb
slw r3,r11,r8 # compute function return value
bdz 1f
0: lwzu r10,4(r4)
srw r9,r11,r6
slw r12,r10,r8
or r9,r9,r12
stwu r9,4(r7)
bdz 2f
lwzu r11,4(r4)
srw r9,r10,r6
slw r12,r11,r8
or r9,r9,r12
stwu r9,4(r7)
bdnz 0b
1: srw r0,r11,r6
stw r0,4(r7)
blr
2: srw r0,r10,r6
stw r0,4(r7)
blr
END(__mpn_rshift)