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| author | Wilco Dijkstra <wilco.dijkstra@arm.com> | 2023-10-17 16:54:21 +0100 |
|---|---|---|
| committer | Wilco Dijkstra <wilco.dijkstra@arm.com> | 2023-10-24 13:37:48 +0100 |
| commit | 2bd00179885928fd95fcabfafc50e7b5c6e660d2 (patch) | |
| tree | 0eb3165f11ebd3f4aacfbeabf06c1e4ed684d000 /sysdeps/aarch64/multiarch/memmove_mops.S | |
| parent | 2f1c6652d7b339526cfebc87c64c6f130cabc9ba (diff) | |
| download | glibc-2bd00179885928fd95fcabfafc50e7b5c6e660d2.tar.xz glibc-2bd00179885928fd95fcabfafc50e7b5c6e660d2.zip | |
AArch64: Add support for MOPS memcpy/memmove/memset
Add support for MOPS in cpu_features and INIT_ARCH. Add ifuncs using MOPS for
memcpy, memmove and memset (use .inst for now so it works with all binutils
versions without needing complex configure and conditional compilation).
Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
Diffstat (limited to 'sysdeps/aarch64/multiarch/memmove_mops.S')
| -rw-r--r-- | sysdeps/aarch64/multiarch/memmove_mops.S | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/sysdeps/aarch64/multiarch/memmove_mops.S b/sysdeps/aarch64/multiarch/memmove_mops.S new file mode 100644 index 0000000000..c5ea66be3a --- /dev/null +++ b/sysdeps/aarch64/multiarch/memmove_mops.S @@ -0,0 +1,39 @@ +/* Optimized memmove for MOPS. + Copyright (C) 2023 Free Software Foundation, Inc. + + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <https://www.gnu.org/licenses/>. */ + +#include <sysdep.h> + +/* Assumptions: + * + * AArch64, MOPS. + * + */ + +ENTRY (__memmove_mops) + PTR_ARG (0) + PTR_ARG (1) + SIZE_ARG (2) + + mov x3, x0 + .inst 0x1d010443 /* cpyp [x3]!, [x1]!, x2! */ + .inst 0x1d410443 /* cpym [x3]!, [x1]!, x2! */ + .inst 0x1d810443 /* cpye [x3]!, [x1]!, x2! */ + ret + +END (__memmove_mops) |