diff options
Diffstat (limited to 'arch/arm64/lib/memset.S')
| -rw-r--r-- | arch/arm64/lib/memset.S | 45 |
1 files changed, 27 insertions, 18 deletions
diff --git a/arch/arm64/lib/memset.S b/arch/arm64/lib/memset.S index f2670a9f218c..97157da65ec6 100644 --- a/arch/arm64/lib/memset.S +++ b/arch/arm64/lib/memset.S @@ -1,25 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2013 ARM Ltd. * Copyright (C) 2013 Linaro. * * This code is based on glibc cortex strings work originally authored by Linaro - * and re-licensed under GPLv2 for the Linux kernel. The original code can * be found @ * * http://bazaar.launchpad.net/~linaro-toolchain-dev/cortex-strings/trunk/ * files/head:/src/aarch64/ - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/linkage.h> @@ -38,6 +26,7 @@ */ dstin .req x0 +val_x .req x1 val .req w1 count .req x2 tmp1 .req x3 @@ -54,9 +43,7 @@ dst .req x8 tmp3w .req w9 tmp3 .req x9 - .weak memset -ENTRY(__memset) -ENTRY(memset) +SYM_FUNC_START_LOCAL(__pi_memset_generic) mov dst, dstin /* Preserve return value. */ and A_lw, val, #255 orr A_lw, A_lw, A_lw, lsl #8 @@ -215,5 +202,27 @@ ENTRY(memset) ands count, count, zva_bits_x b.ne .Ltail_maybe_long ret -ENDPIPROC(memset) -ENDPROC(__memset) +SYM_FUNC_END(__pi_memset_generic) + +#ifdef CONFIG_AS_HAS_MOPS + .arch_extension mops +SYM_FUNC_START(__pi_memset) +alternative_if_not ARM64_HAS_MOPS + b __pi_memset_generic +alternative_else_nop_endif + + mov dst, dstin + setp [dst]!, count!, val_x + setm [dst]!, count!, val_x + sete [dst]!, count!, val_x + ret +SYM_FUNC_END(__pi_memset) +#else +SYM_FUNC_ALIAS(__pi_memset, __pi_memset_generic) +#endif + +SYM_FUNC_ALIAS(__memset, __pi_memset) +EXPORT_SYMBOL(__memset) + +SYM_FUNC_ALIAS_WEAK(memset, __pi_memset) +EXPORT_SYMBOL(memset) |