1 dnl PowerPC-64 mpn_lshift -- rp[] = up[] << cnt
3 dnl Copyright 2003, 2005 Free Software Foundation, Inc.
5 dnl This file is part of the GNU MP Library.
7 dnl The GNU MP Library is free software; you can redistribute it and/or modify
8 dnl it under the terms of the GNU Lesser General Public License as published
9 dnl by the Free Software Foundation; either version 3 of the License, or (at
10 dnl your option) any later version.
12 dnl The GNU MP Library is distributed in the hope that it will be useful, but
13 dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
15 dnl License for more details.
17 dnl You should have received a copy of the GNU Lesser General Public License
18 dnl along with the GNU MP Library. If not, see http://www.gnu.org/licenses/.
20 include(`../config.m4')
43 ifdef(`HAVE_ABI_mode32',
44 ` rldicl r7, r5, 0, 32 C zero extend n
45 mtctr r7', C copy n to count register
46 ` mtctr n') C copy n to count register
48 ifdef(`HAVE_ABI_mode32',
49 ` rldic r0, n, 3, 32', C byte count corresponding to n
50 ` rldicr r0, n, 3, 60') C byte count corresponding to n
52 add rp, rp, r0 C rp = rp + n
53 add up, up, r0 C up = up + n
54 addi rp, rp, 8 C rp now points 16 beyond end
55 addi up, up, -8 C up now points to last limb
56 subfic tnc, cnt, 64 C reverse shift count
60 srd r12, u0, tnc C return value
61 bdz L(1) C jump for n = 1
64 bdz L(2) C jump for n = 2
67 bdz L(end) C jump for n = 3
69 L(oop): srd v1, u1, tnc
85 L(end): srd v1, u1, tnc
94 ifdef(`HAVE_ABI_mode32',
101 L(exit): srd v0, u0, tnc
105 L(2): srd v1, u1, tnc
110 ifdef(`HAVE_ABI_mode32',