1dnl S/390-32 mpn_lshiftc. 2 3dnl Copyright 2011 Free Software Foundation, Inc. 4 5dnl This file is part of the GNU MP Library. 6 7dnl The GNU MP Library is free software; you can redistribute it and/or modify 8dnl it under the terms of the GNU Lesser General Public License as published 9dnl by the Free Software Foundation; either version 3 of the License, or (at 10dnl your option) any later version. 11 12dnl The GNU MP Library is distributed in the hope that it will be useful, but 13dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 14dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 15dnl License for more details. 16 17dnl You should have received a copy of the GNU Lesser General Public License 18dnl along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. 19 20include(`../config.m4') 21 22C cycles/limb 23C z900 7 24C z990 3.375 25C z9 ? 26C z10 ? 27C z196 ? 28 29C TODO 30C * 31 32C INPUT PARAMETERS 33define(`rp', `%r2') 34define(`up', `%r3') 35define(`n', `%r4') 36define(`cnt', `%r5') 37 38ASM_START() 39PROLOGUE(mpn_lshiftc) 40 lr %r1, n 41 sll %r1, 2 42 stm %r6, %r13, 24(%r15) 43 la up, 0(%r1,up) C put up near end of U 44 la rp, 0(%r1,rp) C put rp near end of R 45 ahi up, -20 46 ahi rp, -16 47 lhi %r8, 32 48 sr %r8, cnt 49 l %r12, 16(up) 50 srl %r12, 0(%r8) C return value 51 lhi %r13, -1 52 lhi %r7, 3 53 nr %r7, n 54 srl n, 2 55 je L(b0) 56 chi %r7, 2 57 jl L(b1) 58 je L(b2) 59 60L(b3): l %r10, 16(up) 61 l %r11, 12(up) 62 l %r9, 8(up) 63 ahi up, -8 64 lr %r8, %r11 65 sldl %r10, 0(cnt) 66 sldl %r8, 0(cnt) 67 xr %r10, %r13 68 xr %r8, %r13 69 st %r10, 12(rp) 70 st %r8, 8(rp) 71 ahi rp, -8 72 ltr n, n 73 je L(end) 74 j L(top) 75 76L(b2): l %r10, 16(up) 77 l %r11, 12(up) 78 ahi up, -4 79 sldl %r10, 0(cnt) 80 xr %r10, %r13 81 st %r10, 12(rp) 82 ahi rp, -4 83 ltr n, n 84 je L(end) 85 j L(top) 86 87L(b1): ltr n, n 88 je L(end) 89 j L(top) 90 91L(b0): l %r10,16(up) 92 l %r8, 12(up) 93 l %r6, 8(up) 94 l %r0, 4(up) 95 ahi up, -12 96 lr %r11, %r8 97 lr %r9, %r6 98 lr %r7, %r0 99 sldl %r10,0(cnt) 100 sldl %r8, 0(cnt) 101 sldl %r6, 0(cnt) 102 xr %r10, %r13 103 xr %r8, %r13 104 xr %r6, %r13 105 st %r10, 12(rp) 106 st %r8, 8(rp) 107 st %r6, 4(rp) 108 ahi rp, -12 109 ahi n, -1 110 je L(end) 111 112 ALIGN(8) 113L(top): l %r10, 16(up) 114 l %r8, 12(up) 115 l %r6, 8(up) 116 l %r0, 4(up) 117 l %r1, 0(up) 118 lr %r11, %r8 119 lr %r9, %r6 120 lr %r7, %r0 121 ahi up, -16 122 sldl %r10, 0(cnt) 123 sldl %r8, 0(cnt) 124 sldl %r6, 0(cnt) 125 sldl %r0, 0(cnt) 126 xr %r10, %r13 127 xr %r8, %r13 128 xr %r6, %r13 129 xr %r0, %r13 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 xr %r10, %r13 140 st %r10, 12(rp) 141 142 lr %r2, %r12 143 lm %r6, %r13, 24(%r15) 144 br %r14 145EPILOGUE() 146