3d8e98f8bd
This patch doesn't *enable* the SVE optimized routines, but it does let us see if switching them to ifuncs will cause any app compat issues, so that we can more easily use the optimized routines in future. Test: treehugger Change-Id: Ic5fe570bd21687da397b48127bf688f7ec68dd0c
134 lines
4.1 KiB
C++
134 lines
4.1 KiB
C++
/*
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* Copyright (C) 2019 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <private/bionic_ifuncs.h>
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#include <stddef.h>
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#include <sys/auxv.h>
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extern "C" {
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typedef void* memchr_func(const void*, int, size_t);
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DEFINE_IFUNC_FOR(memchr) {
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if (arg->_hwcap2 & HWCAP2_MTE) {
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RETURN_FUNC(memchr_func, __memchr_aarch64_mte);
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} else {
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RETURN_FUNC(memchr_func, __memchr_aarch64);
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}
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}
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typedef void* memcmp_func(void*, const void*, size_t);
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DEFINE_IFUNC_FOR(memcmp) {
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// TODO: enable the SVE version.
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RETURN_FUNC(memcmp_func, __memcmp_aarch64);
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}
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typedef void* memcpy_func(void*, const void*, size_t);
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DEFINE_IFUNC_FOR(memcpy) {
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if (arg->_hwcap & HWCAP_ASIMD) {
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RETURN_FUNC(memcpy_func, __memcpy_aarch64_simd);
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} else {
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RETURN_FUNC(memcpy_func, __memcpy_aarch64);
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}
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}
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typedef void* memmove_func(void*, const void*, size_t);
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DEFINE_IFUNC_FOR(memmove) {
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if (arg->_hwcap & HWCAP_ASIMD) {
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RETURN_FUNC(memmove_func, __memmove_aarch64_simd);
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} else {
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RETURN_FUNC(memmove_func, __memmove_aarch64);
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}
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}
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typedef int stpcpy_func(char*, const char*);
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DEFINE_IFUNC_FOR(stpcpy) {
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// TODO: enable the SVE version.
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RETURN_FUNC(stpcpy_func, __stpcpy_aarch64);
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}
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typedef char* strchr_func(const char*, int);
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DEFINE_IFUNC_FOR(strchr) {
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if (arg->_hwcap2 & HWCAP2_MTE) {
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RETURN_FUNC(strchr_func, __strchr_aarch64_mte);
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} else {
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RETURN_FUNC(strchr_func, __strchr_aarch64);
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}
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}
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typedef char* strchrnul_func(const char*, int);
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DEFINE_IFUNC_FOR(strchrnul) {
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if (arg->_hwcap2 & HWCAP2_MTE) {
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RETURN_FUNC(strchrnul_func, __strchrnul_aarch64_mte);
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} else {
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RETURN_FUNC(strchrnul_func, __strchrnul_aarch64);
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}
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}
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typedef int strcmp_func(const char*, const char*);
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DEFINE_IFUNC_FOR(strcmp) {
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// TODO: enable the SVE version.
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RETURN_FUNC(strcmp_func, __strcmp_aarch64);
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}
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typedef int strcpy_func(char*, const char*);
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DEFINE_IFUNC_FOR(strcpy) {
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// TODO: enable the SVE version.
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RETURN_FUNC(strcpy_func, __strcpy_aarch64);
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}
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typedef size_t strlen_func(const char*);
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DEFINE_IFUNC_FOR(strlen) {
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if (arg->_hwcap2 & HWCAP2_MTE) {
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RETURN_FUNC(strlen_func, __strlen_aarch64_mte);
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} else {
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RETURN_FUNC(strlen_func, __strlen_aarch64);
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}
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}
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typedef int strncmp_func(const char*, const char*, int);
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DEFINE_IFUNC_FOR(strncmp) {
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// TODO: enable the SVE version.
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RETURN_FUNC(strncmp_func, __strncmp_aarch64);
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}
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typedef size_t strnlen_func(const char*);
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DEFINE_IFUNC_FOR(strnlen) {
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// TODO: enable the SVE version.
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RETURN_FUNC(strnlen_func, __strnlen_aarch64);
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}
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typedef char* strrchr_func(const char*, int);
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DEFINE_IFUNC_FOR(strrchr) {
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if (arg->_hwcap2 & HWCAP2_MTE) {
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RETURN_FUNC(strrchr_func, __strrchr_aarch64_mte);
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} else {
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RETURN_FUNC(strrchr_func, __strrchr_aarch64);
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}
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}
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} // extern "C"
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