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From d8a2b56b4fdf39488eb8a94f8b1064e262708b6f Mon Sep 17 00:00:00 2001
From: Wilco Dijkstra <wilco.dijkstra@arm.com>
Date: Tue, 17 Oct 2023 16:54:21 +0100
Subject: [PATCH 05/26] 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>
(cherry picked from commit 2bd00179885928fd95fcabfafc50e7b5c6e660d2)
---
sysdeps/aarch64/multiarch/Makefile | 3 ++
sysdeps/aarch64/multiarch/ifunc-impl-list.c | 3 ++
sysdeps/aarch64/multiarch/init-arch.h | 4 +-
sysdeps/aarch64/multiarch/memcpy.c | 4 ++
sysdeps/aarch64/multiarch/memcpy_mops.S | 39 +++++++++++++++++++
sysdeps/aarch64/multiarch/memmove.c | 4 ++
sysdeps/aarch64/multiarch/memmove_mops.S | 39 +++++++++++++++++++
sysdeps/aarch64/multiarch/memset.c | 4 ++
sysdeps/aarch64/multiarch/memset_mops.S | 38 ++++++++++++++++++
.../unix/sysv/linux/aarch64/cpu-features.c | 3 ++
.../unix/sysv/linux/aarch64/cpu-features.h | 1 +
11 files changed, 141 insertions(+), 1 deletion(-)
create mode 100644 sysdeps/aarch64/multiarch/memcpy_mops.S
create mode 100644 sysdeps/aarch64/multiarch/memmove_mops.S
create mode 100644 sysdeps/aarch64/multiarch/memset_mops.S
diff --git a/sysdeps/aarch64/multiarch/Makefile b/sysdeps/aarch64/multiarch/Makefile
index 223777d94e..e6099548b9 100644
--- a/sysdeps/aarch64/multiarch/Makefile
+++ b/sysdeps/aarch64/multiarch/Makefile
@@ -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
diff --git a/sysdeps/aarch64/multiarch/ifunc-impl-list.c b/sysdeps/aarch64/multiarch/ifunc-impl-list.c
index d274f01fdb..da7f115377 100644
--- a/sysdeps/aarch64/multiarch/ifunc-impl-list.c
+++ b/sysdeps/aarch64/multiarch/ifunc-impl-list.c
@@ -41,6 +41,7 @@ __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)
@@ -50,6 +51,7 @@ __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
@@ -60,6 +62,7 @@ __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)
diff --git a/sysdeps/aarch64/multiarch/init-arch.h b/sysdeps/aarch64/multiarch/init-arch.h
index 6de081e381..e23e6ff290 100644
--- a/sysdeps/aarch64/multiarch/init-arch.h
+++ b/sysdeps/aarch64/multiarch/init-arch.h
@@ -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;
diff --git a/sysdeps/aarch64/multiarch/memcpy.c b/sysdeps/aarch64/multiarch/memcpy.c
index 3aae915c5f..9aace954cb 100644
--- a/sysdeps/aarch64/multiarch/memcpy.c
+++ b/sysdeps/aarch64/multiarch/memcpy.c
@@ -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))
diff --git a/sysdeps/aarch64/multiarch/memcpy_mops.S b/sysdeps/aarch64/multiarch/memcpy_mops.S
new file mode 100644
index 0000000000..4685629664
--- /dev/null
+++ b/sysdeps/aarch64/multiarch/memcpy_mops.S
@@ -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)
diff --git a/sysdeps/aarch64/multiarch/memmove.c b/sysdeps/aarch64/multiarch/memmove.c
index 312f90f111..fd346e7b73 100644
--- a/sysdeps/aarch64/multiarch/memmove.c
+++ b/sysdeps/aarch64/multiarch/memmove.c
@@ -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))
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)
diff --git a/sysdeps/aarch64/multiarch/memset.c b/sysdeps/aarch64/multiarch/memset.c
index f9c81d3d8e..23fc66e158 100644
--- a/sysdeps/aarch64/multiarch/memset.c
+++ b/sysdeps/aarch64/multiarch/memset.c
@@ -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)
diff --git a/sysdeps/aarch64/multiarch/memset_mops.S b/sysdeps/aarch64/multiarch/memset_mops.S
new file mode 100644
index 0000000000..ca820b8636
--- /dev/null
+++ b/sysdeps/aarch64/multiarch/memset_mops.S
@@ -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)
diff --git a/sysdeps/unix/sysv/linux/aarch64/cpu-features.c b/sysdeps/unix/sysv/linux/aarch64/cpu-features.c
index dc09c1c827..233d5b2407 100644
--- a/sysdeps/unix/sysv/linux/aarch64/cpu-features.c
+++ b/sysdeps/unix/sysv/linux/aarch64/cpu-features.c
@@ -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;
}
diff --git a/sysdeps/unix/sysv/linux/aarch64/cpu-features.h b/sysdeps/unix/sysv/linux/aarch64/cpu-features.h
index d67d286b53..40b709677d 100644
--- a/sysdeps/unix/sysv/linux/aarch64/cpu-features.h
+++ b/sysdeps/unix/sysv/linux/aarch64/cpu-features.h
@@ -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 */
--
2.33.0
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