Files
openharmony_kernel_liteos_a/lib/libc/BUILD.gn
arvinzzz 689c2e90cf feat:C库典型高频函数优化
针对字符串类高频函数:
1. 采用单次多字节操作提升字符串类高频函数的执行效率
2. 针对armv7-a,采用neon指令进行优化

close: #I42DAK

Signed-off-by: arvinzzz <zhaotianyu9@huawei.com>
Change-Id: Ic90d92f778e0006881f793585264ad7e5f644104
2021-08-10 16:30:14 +08:00

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# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice, this list of
# conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice, this list
# of conditions and the following disclaimer in the documentation and/or other materials
# provided with the distribution.
#
# 3. Neither the name of the copyright holder nor the names of its contributors may be used
# to endorse or promote products derived from this software without specific prior written
# permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
import("//kernel/liteos_a/liteos.gni")
MUSLDIR = "$LITEOSTHIRDPARTY/musl"
OPTRTDIR = "$LITEOSTHIRDPARTY/optimized-routines"
import("$MUSLDIR/porting/liteos_a/kernel/musl.gni")
module_switch = defined(LOSCFG_LIB_LIBC)
module_name = get_path_info(rebase_path("."), "name")
kernel_module(module_name) {
sources = MUSL_SRC_COMMON
if (defined(LOSCFG_ARCH_ARM_AARCH32)) {
sources += MUSL_SRC_ARM
foreach(f, MUSL_SRC_ARM) {
sources -= [ string_replace(f, "/arm/", "/") ]
}
}
if (LOSCFG_ARCH_ARM_VER == "armv7-a") {
sources -= [
"$MUSLPORTINGDIR/src/string/memchr.c",
"$MUSLPORTINGDIR/src/string/memcpy.c",
"$MUSLPORTINGDIR/src/string/strcmp.c",
"$MUSLPORTINGDIR/src/string/strcpy.c",
"$MUSLPORTINGDIR/src/string/strlen.c",
]
sources += [
"$OPTRTDIR/string/arm/memchr.S",
"$OPTRTDIR/string/arm/memcpy.S",
"$OPTRTDIR/string/arm/strcmp.S",
"$OPTRTDIR/string/arm/strcpy.c",
"$OPTRTDIR/string/arm/strlen-armv6t2.S",
"src/arch/arm/memset.S",
"src/arch/arm/memcmp.S",
]
} else {
sources += [
"src/memset.c",
"src/memcmp.c",
]
}
public_configs = [ ":public" ]
configs += [ ":private" ]
}
config("public") {
include_dirs = [ "$MUSLPORTINGDIR/include" ]
}
config("private") {
if (defined(LOSCFG_COMPILER_CLANG_LLVM)) {
cflags = [
"-Wno-char-subscripts",
"-Wno-unknown-pragmas",
]
} else {
cflags = [
"-frounding-math",
"-Wno-unused-but-set-variable",
"-Wno-unknown-pragmas",
]
}
include_dirs = [
"$MUSLPORTINGDIR/src/include",
"$MUSLPORTINGDIR/src/internal",
]
}