1dnl S/390-32 mpn_lshift. 2 3dnl Copyright 2011 Free Software Foundation, Inc. 4 5dnl This file is part of the GNU MP Library. 6dnl 7dnl The GNU MP Library is free software; you can redistribute it and/or modify 8dnl it under the terms of either: 9dnl 10dnl * the GNU Lesser General Public License as published by the Free 11dnl Software Foundation; either version 3 of the License, or (at your 12dnl option) any later version. 13dnl 14dnl or 15dnl 16dnl * the GNU General Public License as published by the Free Software 17dnl Foundation; either version 2 of the License, or (at your option) any 18dnl later version. 19dnl 20dnl or both in parallel, as here. 21dnl 22dnl The GNU MP Library is distributed in the hope that it will be useful, but 23dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 24dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 25dnl for more details. 26dnl 27dnl You should have received copies of the GNU General Public License and the 28dnl GNU Lesser General Public License along with the GNU MP Library. If not, 29dnl see https://www.gnu.org/licenses/. 30 31include(`../config.m4') 32 33C cycles/limb 34C z900 6 35C z990 3 36C z9 ? 37C z10 ? 38C z196 ? 39 40C TODO 41C * 42 43C INPUT PARAMETERS 44define(`rp', `%r2') 45define(`up', `%r3') 46define(`n', `%r4') 47define(`cnt', `%r5') 48 49ASM_START() 50PROLOGUE(mpn_lshift) 51 lr %r1, n 52 sll %r1, 2 53 stm %r6, %r12, 24(%r15) 54 la up, 0(%r1,up) C put up near end of U 55 la rp, 0(%r1,rp) C put rp near end of R 56 ahi up, -20 57 ahi rp, -16 58 lhi %r8, 32 59 sr %r8, cnt 60 l %r12, 16(up) 61 srl %r12, 0(%r8) C return value 62 lhi %r7, 3 63 nr %r7, n 64 srl n, 2 65 je L(b0) 66 chi %r7, 2 67 jl L(b1) 68 je L(b2) 69 70L(b3): l %r10, 16(up) 71 l %r11, 12(up) 72 l %r9, 8(up) 73 ahi up, -8 74 lr %r8, %r11 75 sldl %r10, 0(cnt) 76 sldl %r8, 0(cnt) 77 st %r10, 12(rp) 78 st %r8, 8(rp) 79 ahi rp, -8 80 ltr n, n 81 je L(end) 82 j L(top) 83 84L(b2): l %r10, 16(up) 85 l %r11, 12(up) 86 ahi up, -4 87 sldl %r10, 0(cnt) 88 st %r10, 12(rp) 89 ahi rp, -4 90 ltr n, n 91 je L(end) 92 j L(top) 93 94L(b1): ltr n, n 95 je L(end) 96 j L(top) 97 98L(b0): l %r10,16(up) 99 l %r8, 12(up) 100 l %r6, 8(up) 101 l %r0, 4(up) 102 ahi up, -12 103 lr %r11, %r8 104 lr %r9, %r6 105 lr %r7, %r0 106 sldl %r10,0(cnt) 107 sldl %r8, 0(cnt) 108 sldl %r6, 0(cnt) 109 st %r10, 12(rp) 110 st %r8, 8(rp) 111 st %r6, 4(rp) 112 ahi rp, -12 113 ahi n, -1 114 je L(end) 115 116 ALIGN(8) 117L(top): l %r10, 16(up) 118 l %r8, 12(up) 119 l %r6, 8(up) 120 l %r0, 4(up) 121 l %r1, 0(up) 122 lr %r11, %r8 123 lr %r9, %r6 124 lr %r7, %r0 125 ahi up, -16 126 sldl %r10, 0(cnt) 127 sldl %r8, 0(cnt) 128 sldl %r6, 0(cnt) 129 sldl %r0, 0(cnt) 130 st %r10, 12(rp) 131 st %r8, 8(rp) 132 st %r6, 4(rp) 133 st %r0, 0(rp) 134 ahi rp, -16 135 brct n, L(top) 136 137L(end): l %r10, 16(up) 138 sll %r10, 0(cnt) 139 st %r10, 12(rp) 140 141 lr %r2, %r12 142 lm %r6, %r12, 24(%r15) 143 br %r14 144EPILOGUE() 145