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AArch64: Add support for MOPS memcpy/memmove/memset

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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>
(cherry picked from commit 2bd0017988)
This commit is contained in:
Wilco Dijkstra 2023-10-17 16:54:21 +01:00
parent cb0012f076
commit 3b79e57c1c
11 changed files with 141 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
sysdeps/aarch64/multiarch/Makefile
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@ -5,14 +5,17 @@ sysdep_routines += \
memcpy_a64fx \
memcpy_falkor \
memcpy_generic \
memcpy_mops \
memcpy_sve \
memcpy_thunderx \
memcpy_thunderx2 \
memmove_mops \
memset_a64fx \
memset_emag \
memset_falkor \
memset_generic \
memset_kunpeng \
memset_mops \
strlen_asimd \
strlen_mte \
# sysdep_routines

3
sysdeps/aarch64/multiarch/ifunc-impl-list.c
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@ -46,6 +46,7 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_IMPL_ADD (array, i, memcpy, sve, __memcpy_a64fx)
IFUNC_IMPL_ADD (array, i, memcpy, sve, __memcpy_sve)
#endif
IFUNC_IMPL_ADD (array, i, memcpy, mops, __memcpy_mops)
IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_generic))
IFUNC_IMPL (i, name, memmove,
IFUNC_IMPL_ADD (array, i, memmove, 1, __memmove_thunderx)
@ -55,6 +56,7 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_IMPL_ADD (array, i, memmove, sve, __memmove_a64fx)
IFUNC_IMPL_ADD (array, i, memmove, sve, __memmove_sve)
#endif
IFUNC_IMPL_ADD (array, i, memmove, mops, __memmove_mops)
IFUNC_IMPL_ADD (array, i, memmove, 1, __memmove_generic))
IFUNC_IMPL (i, name, memset,
/* Enable this on non-falkor processors too so that other cores
@ -65,6 +67,7 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
#if HAVE_AARCH64_SVE_ASM
IFUNC_IMPL_ADD (array, i, memset, sve && zva_size == 256, __memset_a64fx)
#endif
IFUNC_IMPL_ADD (array, i, memset, mops, __memset_mops)
IFUNC_IMPL_ADD (array, i, memset, 1, __memset_generic))
IFUNC_IMPL (i, name, memchr,
IFUNC_IMPL_ADD (array, i, memchr, !mte, __memchr_nosimd)

4
sysdeps/aarch64/multiarch/init-arch.h
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@ -35,4 +35,6 @@
bool __attribute__((unused)) mte = \
MTE_ENABLED (); \
bool __attribute__((unused)) sve = \
GLRO(dl_aarch64_cpu_features).sve;
GLRO(dl_aarch64_cpu_features).sve; \
bool __attribute__((unused)) mops = \
GLRO(dl_aarch64_cpu_features).mops;

4
sysdeps/aarch64/multiarch/memcpy.c
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@ -34,12 +34,16 @@ extern __typeof (__redirect_memcpy) __memcpy_thunderx2 attribute_hidden;
extern __typeof (__redirect_memcpy) __memcpy_falkor attribute_hidden;
extern __typeof (__redirect_memcpy) __memcpy_a64fx attribute_hidden;
extern __typeof (__redirect_memcpy) __memcpy_sve attribute_hidden;
extern __typeof (__redirect_memcpy) __memcpy_mops attribute_hidden;
static inline __typeof (__redirect_memcpy) *
select_memcpy_ifunc (void)
{
INIT_ARCH ();
if (mops)
return __memcpy_mops;
if (sve && HAVE_AARCH64_SVE_ASM)
{
if (IS_A64FX (midr))

39
sysdeps/aarch64/multiarch/memcpy_mops.S Normal file
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@ -0,0 +1,39 @@
/* Optimized memcpy 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 (__memcpy_mops)
PTR_ARG (0)
PTR_ARG (1)
SIZE_ARG (2)
mov x3, x0
.inst 0x19010443 /* cpyfp [x3]!, [x1]!, x2! */
.inst 0x19410443 /* cpyfm [x3]!, [x1]!, x2! */
.inst 0x19810443 /* cpyfe [x3]!, [x1]!, x2! */
ret
END (__memcpy_mops)

4
sysdeps/aarch64/multiarch/memmove.c
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@ -34,12 +34,16 @@ extern __typeof (__redirect_memmove) __memmove_thunderx2 attribute_hidden;
extern __typeof (__redirect_memmove) __memmove_falkor attribute_hidden;
extern __typeof (__redirect_memmove) __memmove_a64fx attribute_hidden;
extern __typeof (__redirect_memmove) __memmove_sve attribute_hidden;
extern __typeof (__redirect_memmove) __memmove_mops attribute_hidden;
static inline __typeof (__redirect_memmove) *
select_memmove_ifunc (void)
{
INIT_ARCH ();
if (mops)
return __memmove_mops;
if (sve && HAVE_AARCH64_SVE_ASM)
{
if (IS_A64FX (midr))

39
sysdeps/aarch64/multiarch/memmove_mops.S Normal file
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@ -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)

4
sysdeps/aarch64/multiarch/memset.c
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@ -33,12 +33,16 @@ extern __typeof (__redirect_memset) __memset_emag attribute_hidden;
extern __typeof (__redirect_memset) __memset_kunpeng attribute_hidden;
extern __typeof (__redirect_memset) __memset_a64fx attribute_hidden;
extern __typeof (__redirect_memset) __memset_generic attribute_hidden;
extern __typeof (__redirect_memset) __memset_mops attribute_hidden;
static inline __typeof (__redirect_memset) *
select_memset_ifunc (void)
{
INIT_ARCH ();
if (mops)
return __memset_mops;
if (sve && HAVE_AARCH64_SVE_ASM)
{
if (IS_A64FX (midr) && zva_size == 256)

38
sysdeps/aarch64/multiarch/memset_mops.S Normal file
View File

@ -0,0 +1,38 @@
/* Optimized memset 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 (__memset_mops)
PTR_ARG (0)
SIZE_ARG (2)
mov x3, x0
.inst 0x19c10443 /* setp [x3]!, x2!, x1 */
.inst 0x19c14443 /* setm [x3]!, x2!, x1 */
.inst 0x19c18443 /* sete [x3]!, x2!, x1 */
ret
END (__memset_mops)

3
sysdeps/unix/sysv/linux/aarch64/cpu-features.c
View File

@ -120,4 +120,7 @@ init_cpu_features (struct cpu_features *cpu_features)
/* Check if SVE is supported. */
cpu_features->sve = GLRO (dl_hwcap) & HWCAP_SVE;
/* Check if MOPS is supported. */
cpu_features->mops = GLRO (dl_hwcap2) & HWCAP2_MOPS;
}

1
sysdeps/unix/sysv/linux/aarch64/cpu-features.h
View File

@ -76,6 +76,7 @@ struct cpu_features
/* Currently, the GLIBC memory tagging tunable only defines 8 bits. */
uint8_t mte_state;
bool sve;
bool mops;
};
#endif /* _CPU_FEATURES_AARCH64_H */