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authorJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
committerJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
commit0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (patch)
tree2ea1f8305970753e4a657acb2ccc15ca3eec8e2c /sysdeps/rs6000/lshift.s
parent7d58530341304d403a6626d7f7a1913165fe2f32 (diff)
downloadglibc-0ecb606cb6cf65de1d9fc8a919bceb4be476c602.tar.gz
2.5-18.1
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diff --git a/sysdeps/rs6000/lshift.s b/sysdeps/rs6000/lshift.s
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-# IBM POWER __mpn_lshift --
-
-# Copyright (C) 1992, 1994 Free Software Foundation, Inc.
-
-# This file is part of the GNU MP Library.
-
-# The GNU MP Library is free software; you can redistribute it and/or modify
-# it under the terms of the GNU Lesser General Public License as published by
-# the Free Software Foundation; either version 2.1 of the License, or (at your
-# option) any later version.
-
-# The GNU MP 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 Lesser General Public
-# License for more details.
-
-# You should have received a copy of the GNU Lesser General Public License
-# along with the GNU MP 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.
-
-
-# INPUT PARAMETERS
-# res_ptr r3
-# s_ptr r4
-# size r5
-# cnt r6
-
- .toc
- .extern __mpn_lshift[DS]
- .extern .__mpn_lshift
-.csect [PR]
- .align 2
- .globl __mpn_lshift
- .globl .__mpn_lshift
- .csect __mpn_lshift[DS]
-__mpn_lshift:
- .long .__mpn_lshift, TOC[tc0], 0
- .csect [PR]
-.__mpn_lshift:
- sli 0,5,2
- cax 9,3,0
- cax 4,4,0
- sfi 8,6,32
- mtctr 5 # put limb count in CTR loop register
- lu 0,-4(4) # read most significant limb
- sre 3,0,8 # compute carry out limb, and init MQ register
- bdz Lend2 # if just one limb, skip loop
- lu 0,-4(4) # read 2:nd most significant limb
- sreq 7,0,8 # compute most significant limb of result
- bdz Lend # if just two limb, skip loop
-Loop: lu 0,-4(4) # load next lower limb
- stu 7,-4(9) # store previous result during read latency
- sreq 7,0,8 # compute result limb
- bdn Loop # loop back until CTR is zero
-Lend: stu 7,-4(9) # store 2:nd least significant limb
-Lend2: sle 7,0,6 # compute least significant limb
- st 7,-4(9) # store it" \
- br