1 # IBM POWER __gmpn_rshift --
3 # Copyright (C) 1992, 1994, 1999, 2000 Free Software Foundation, Inc.
5 # This file is part of the GNU MP Library.
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32 .csect __gmpn_rshift[DS]
34 .long .__gmpn_rshift, TOC[tc0], 0
39 mtctr 5 # put limb count in CTR loop register
40 l 0,0(4) # read least significant limb
41 ai 9,3,-4 # adjust res_ptr since it's offset in the stu:s
42 sle 3,0,8 # compute carry limb, and init MQ register
43 bdz Lend2 # if just one limb, skip loop
44 lu 0,4(4) # read 2:nd least significant limb
45 sleq 7,0,8 # compute least significant limb of result
46 bdz Lend # if just two limb, skip loop
47 Loop: lu 0,4(4) # load next higher limb
48 stu 7,4(9) # store previous result during read latency
49 sleq 7,0,8 # compute result limb
50 bdn Loop # loop back until CTR is zero
51 Lend: stu 7,4(9) # store 2:nd most significant limb
52 Lend2: sre 7,0,6 # compute most significant limb
53 st 7,4(9) # store it" \