tishift.S (1054B)
1/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) 2 * 3 * Copyright (C) 2017-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. 4 */ 5 6#include <linux/linkage.h> 7 8#include <asm/assembler.h> 9 10SYM_FUNC_START(__ashlti3) 11 cbz x2, 1f 12 mov x3, #64 13 sub x3, x3, x2 14 cmp x3, #0 15 b.le 2f 16 lsl x1, x1, x2 17 lsr x3, x0, x3 18 lsl x2, x0, x2 19 orr x1, x1, x3 20 mov x0, x2 211: 22 ret 232: 24 neg w1, w3 25 mov x2, #0 26 lsl x1, x0, x1 27 mov x0, x2 28 ret 29SYM_FUNC_END(__ashlti3) 30EXPORT_SYMBOL(__ashlti3) 31 32SYM_FUNC_START(__ashrti3) 33 cbz x2, 1f 34 mov x3, #64 35 sub x3, x3, x2 36 cmp x3, #0 37 b.le 2f 38 lsr x0, x0, x2 39 lsl x3, x1, x3 40 asr x2, x1, x2 41 orr x0, x0, x3 42 mov x1, x2 431: 44 ret 452: 46 neg w0, w3 47 asr x2, x1, #63 48 asr x0, x1, x0 49 mov x1, x2 50 ret 51SYM_FUNC_END(__ashrti3) 52EXPORT_SYMBOL(__ashrti3) 53 54SYM_FUNC_START(__lshrti3) 55 cbz x2, 1f 56 mov x3, #64 57 sub x3, x3, x2 58 cmp x3, #0 59 b.le 2f 60 lsr x0, x0, x2 61 lsl x3, x1, x3 62 lsr x2, x1, x2 63 orr x0, x0, x3 64 mov x1, x2 651: 66 ret 672: 68 neg w0, w3 69 mov x2, #0 70 lsr x0, x1, x0 71 mov x1, x2 72 ret 73SYM_FUNC_END(__lshrti3) 74EXPORT_SYMBOL(__lshrti3)