/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
*
* 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 OWNER 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.
*/
#include <stddef.h>
extern "C" {
#define DEFINE_IFUNC_FOR(name) \
name##_func name __attribute__((ifunc(#name "_resolver"))); \
__attribute__((visibility("hidden"))) \
name##_func* name##_resolver()
#define DECLARE_FUNC(type, name) \
__attribute__((visibility("hidden"))) \
type name
#define RETURN_FUNC(type, name) { \
DECLARE_FUNC(type, name); \
return name; \
}
typedef int memcmp_func(const void* __lhs, const void* __rhs, size_t __n);
DEFINE_IFUNC_FOR(memcmp) {
__builtin_cpu_init();
if (__builtin_cpu_is("atom")) RETURN_FUNC(memcmp_func, memcmp_atom);
if (__builtin_cpu_supports("sse4.1")) RETURN_FUNC(memcmp_func, memcmp_sse4);
RETURN_FUNC(memcmp_func, memcmp_generic);
}
typedef void* memset_func(void* __dst, int __ch, size_t __n);
DEFINE_IFUNC_FOR(memset) {
__builtin_cpu_init();
if (__builtin_cpu_is("atom")) RETURN_FUNC(memset_func, memset_atom);
RETURN_FUNC(memset_func, memset_generic);
}
typedef void* __memset_chk_func(void *s, int c, size_t n, size_t n2);
DEFINE_IFUNC_FOR(__memset_chk) {
__builtin_cpu_init();
if (__builtin_cpu_is("atom")) RETURN_FUNC(__memset_chk_func, __memset_chk_atom);
RETURN_FUNC(__memset_chk_func, __memset_chk_generic);
}
typedef void* memmove_func(void* __dst, const void* __src, size_t __n);
DEFINE_IFUNC_FOR(memmove) {
__builtin_cpu_init();
if (__builtin_cpu_is("atom")) RETURN_FUNC(memmove_func, memmove_atom);
RETURN_FUNC(memmove_func, memmove_generic);
}
typedef void* memcpy_func(void*, const void*, size_t);
DEFINE_IFUNC_FOR(memcpy) {
return memmove_resolver();
}
typedef char* strcpy_func(char* __dst, const char* __src);
DEFINE_IFUNC_FOR(strcpy) {
__builtin_cpu_init();
if (__builtin_cpu_is("atom")) RETURN_FUNC(strcpy_func, strcpy_atom);
RETURN_FUNC(strcpy_func, strcpy_generic);
}
typedef char* strncpy_func(char* __dst, const char* __src, size_t __n);
DEFINE_IFUNC_FOR(strncpy) {
__builtin_cpu_init();
if (__builtin_cpu_is("atom")) RETURN_FUNC(strncpy_func, strncpy_atom);
RETURN_FUNC(strncpy_func, strncpy_generic);
}
typedef size_t strlen_func(const char* __s);
DEFINE_IFUNC_FOR(strlen) {
__builtin_cpu_init();
if (__builtin_cpu_is("atom")) RETURN_FUNC(strlen_func, strlen_atom);
RETURN_FUNC(strlen_func, strlen_generic);
}
typedef int wmemcmp_func(const wchar_t* __lhs, const wchar_t* __rhs, size_t __n);
DEFINE_IFUNC_FOR(wmemcmp) {
__builtin_cpu_init();
if (__builtin_cpu_supports("sse4.1")) RETURN_FUNC(wmemcmp_func, wmemcmp_sse4);
if (__builtin_cpu_is("atom")) RETURN_FUNC(wmemcmp_func, wmemcmp_atom);
RETURN_FUNC(wmemcmp_func, wmemcmp_freebsd);
}
typedef int strcmp_func(const char* __lhs, const char* __rhs);
DEFINE_IFUNC_FOR(strcmp) {
__builtin_cpu_init();
if (__builtin_cpu_supports("ssse3")) RETURN_FUNC(strcmp_func, strcmp_ssse3);
RETURN_FUNC(strcmp_func, strcmp_generic);
}
typedef int strncmp_func(const char* __lhs, const char* __rhs, size_t __n);
DEFINE_IFUNC_FOR(strncmp) {
__builtin_cpu_init();
if (__builtin_cpu_supports("ssse3")) RETURN_FUNC(strncmp_func, strncmp_ssse3);
RETURN_FUNC(strncmp_func, strncmp_generic);
}
typedef char* strcat_func(char* __dst, const char* __src);
DEFINE_IFUNC_FOR(strcat) {
__builtin_cpu_init();
if (__builtin_cpu_supports("ssse3")) RETURN_FUNC(strcat_func, strcat_ssse3);
RETURN_FUNC(strcat_func, strcat_generic);
}
typedef char* strncat_func(char* __dst, const char* __src, size_t __n);
DEFINE_IFUNC_FOR(strncat) {
__builtin_cpu_init();
if (__builtin_cpu_supports("ssse3")) RETURN_FUNC(strncat_func, strncat_ssse3);
RETURN_FUNC(strncat_func, strncat_openbsd);
}
typedef size_t strlcat_func(char *dst, const char *src, size_t dsize);
DEFINE_IFUNC_FOR(strlcat) {
__builtin_cpu_init();
if (__builtin_cpu_supports("ssse3")) RETURN_FUNC(strlcat_func, strlcat_ssse3);
RETURN_FUNC(strlcat_func, strlcat_openbsd);
}
typedef size_t strlcpy_func(char *dst, const char *src, size_t dsize);
DEFINE_IFUNC_FOR(strlcpy) {
__builtin_cpu_init();
if (__builtin_cpu_supports("ssse3")) RETURN_FUNC(strlcpy_func, strlcpy_ssse3);
RETURN_FUNC(strlcpy_func, strlcpy_openbsd);
}
typedef wchar_t* wcscat_func(wchar_t *s1, const wchar_t *s2);
DEFINE_IFUNC_FOR(wcscat) {
__builtin_cpu_init();
if (__builtin_cpu_supports("ssse3")) RETURN_FUNC(wcscat_func, wcscat_ssse3);
RETURN_FUNC(wcscat_func, wcscat_freebsd);
}
typedef wchar_t* wcscpy_func(wchar_t *s1, const wchar_t *s2);
DEFINE_IFUNC_FOR(wcscpy) {
__builtin_cpu_init();
if (__builtin_cpu_supports("ssse3")) RETURN_FUNC(wcscpy_func, wcscpy_ssse3);
RETURN_FUNC(wcscpy_func, wcscpy_freebsd);
}
} // extern "C"