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arm64: Kconfig: Enable usage of optimized memset/memcpy/memmove

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This patch enables the use of the optimized memset(), memmove() &
memcpy() versions recently added on ARM64.

Please note that these optimized functions are now only enabled for
recent GCC versions (>= 9.4), as earlier GCC versions throw these
errors:

aarch64-linux-ar: warning: arch/arm/lib/memset-arm64.o: unsupported GNU_PROPERTY_TYPE (5) type: 0xc0000000
...

Signed-off-by: Stefan Roese <sr@denx.de>
[trini: Make this default to off as it causes problems on some platforms still]
Signed-off-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Stefan Roese 2021-09-02 17:00:19 +02:00 committed by Tom Rini
parent 1e43bb6732
commit 4e062fc955
2 changed files with 39 additions and 8 deletions
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43
arch/arm/Kconfig
View File

@ -455,8 +455,8 @@ config ARM_CORTEX_CPU_IS_UP
config USE_ARCH_MEMCPY
bool "Use an assembly optimized implementation of memcpy"
default y
depends on !ARM64
default y if !ARM64
depends on !ARM64 || (ARM64 && (GCC_VERSION >= 90400))
help
Enable the generation of an optimized version of memcpy.
Such an implementation may be faster under some conditions
@ -465,7 +465,7 @@ config USE_ARCH_MEMCPY
config SPL_USE_ARCH_MEMCPY
bool "Use an assembly optimized implementation of memcpy for SPL"
default y if USE_ARCH_MEMCPY
depends on !ARM64 && SPL
depends on SPL
help
Enable the generation of an optimized version of memcpy.
Such an implementation may be faster under some conditions
@ -474,16 +474,43 @@ config SPL_USE_ARCH_MEMCPY
config TPL_USE_ARCH_MEMCPY
bool "Use an assembly optimized implementation of memcpy for TPL"
default y if USE_ARCH_MEMCPY
depends on !ARM64 && TPL
depends on TPL
help
Enable the generation of an optimized version of memcpy.
Such an implementation may be faster under some conditions
but may increase the binary size.
config USE_ARCH_MEMMOVE
bool "Use an assembly optimized implementation of memmove" if !ARM64
default USE_ARCH_MEMCPY if ARM64
depends on ARM64
help
Enable the generation of an optimized version of memmove.
Such an implementation may be faster under some conditions
but may increase the binary size.
config SPL_USE_ARCH_MEMMOVE
bool "Use an assembly optimized implementation of memmove for SPL" if !ARM64
default SPL_USE_ARCH_MEMCPY if ARM64
depends on SPL && ARM64
help
Enable the generation of an optimized version of memmove.
Such an implementation may be faster under some conditions
but may increase the binary size.
config TPL_USE_ARCH_MEMMOVE
bool "Use an assembly optimized implementation of memmove for TPL" if !ARM64
default TPL_USE_ARCH_MEMCPY if ARM64
depends on TPL && ARM64
help
Enable the generation of an optimized version of memmove.
Such an implementation may be faster under some conditions
but may increase the binary size.
config USE_ARCH_MEMSET
bool "Use an assembly optimized implementation of memset"
default y
depends on !ARM64
default y if !ARM64
depends on !ARM64 || (ARM64 && (GCC_VERSION >= 90400))
help
Enable the generation of an optimized version of memset.
Such an implementation may be faster under some conditions
@ -492,7 +519,7 @@ config USE_ARCH_MEMSET
config SPL_USE_ARCH_MEMSET
bool "Use an assembly optimized implementation of memset for SPL"
default y if USE_ARCH_MEMSET
depends on !ARM64 && SPL
depends on SPL
help
Enable the generation of an optimized version of memset.
Such an implementation may be faster under some conditions
@ -501,7 +528,7 @@ config SPL_USE_ARCH_MEMSET
config TPL_USE_ARCH_MEMSET
bool "Use an assembly optimized implementation of memset for TPL"
default y if USE_ARCH_MEMSET
depends on !ARM64 && TPL
depends on TPL
help
Enable the generation of an optimized version of memset.
Such an implementation may be faster under some conditions

4
arch/arm/include/asm/string.h
View File

@ -19,7 +19,11 @@ extern char * strchr(const char * s, int c);
#endif
extern void * memcpy(void *, const void *, __kernel_size_t);
#if CONFIG_IS_ENABLED(USE_ARCH_MEMMOVE)
#define __HAVE_ARCH_MEMMOVE
#else
#undef __HAVE_ARCH_MEMMOVE
#endif
extern void * memmove(void *, const void *, __kernel_size_t);
#undef __HAVE_ARCH_MEMCHR