1/* 2 * Copyright (C) 2017 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 * 13 * You should have received a copy of the GNU General Public License 14 * along with this program. If not, see <http://www.gnu.org/licenses/>. 15 */ 16 17#include <linux/linkage.h> 18 19ENTRY(__ashlti3) 20 cbz x2, 1f 21 mov x3, #64 22 sub x3, x3, x2 23 cmp x3, #0 24 b.le 2f 25 lsl x1, x1, x2 26 lsr x3, x0, x3 27 lsl x2, x0, x2 28 orr x1, x1, x3 29 mov x0, x2 301: 31 ret 322: 33 neg w1, w3 34 mov x2, #0 35 lsl x1, x0, x1 36 mov x0, x2 37 ret 38ENDPROC(__ashlti3) 39 40ENTRY(__ashrti3) 41 cbz x2, 3f 42 mov x3, #64 43 sub x3, x3, x2 44 cmp x3, #0 45 b.le 4f 46 lsr x0, x0, x2 47 lsl x3, x1, x3 48 asr x2, x1, x2 49 orr x0, x0, x3 50 mov x1, x2 513: 52 ret 534: 54 neg w0, w3 55 asr x2, x1, #63 56 asr x0, x1, x0 57 mov x1, x2 58 ret 59ENDPROC(__ashrti3) 60 61ENTRY(__lshrti3) 62 cbz x2, 1f 63 mov x3, #64 64 sub x3, x3, x2 65 cmp x3, #0 66 b.le 2f 67 lsr x0, x0, x2 68 lsl x3, x1, x3 69 lsr x2, x1, x2 70 orr x0, x0, x3 71 mov x1, x2 721: 73 ret 742: 75 neg w0, w3 76 mov x2, #0 77 lsr x0, x1, x0 78 mov x1, x2 79 ret 80ENDPROC(__lshrti3) 81