diff --git a/libc/arch-x86/atom/string/sse2-memset-atom.S b/libc/arch-x86/atom/string/sse2-memset-atom.S
index 4e211ca..016c49e 100644
--- a/libc/arch-x86/atom/string/sse2-memset-atom.S
+++ b/libc/arch-x86/atom/string/sse2-memset-atom.S
@@ -86,7 +86,7 @@
 	movl	(%esp), %ebx
 	ret
 
-ENTRY(__memset_chk)
+ENTRY(__memset_chk_atom)
   ENTRANCE
 
   movl LEN(%esp), %ecx
@@ -95,11 +95,11 @@
 
   POP(%ebx) // Undo ENTRANCE without returning.
   jmp __memset_chk_fail
-END(__memset_chk)
+END(__memset_chk_atom)
 
 	.section .text.sse2,"ax",@progbits
 	ALIGN(4)
-ENTRY(memset)
+ENTRY(memset_atom)
 	ENTRANCE
 
 	movl	LEN(%esp), %ecx
@@ -839,4 +839,4 @@
 	SETRTNVAL
 	RETURN_END
 
-END(memset)
+END(memset_atom)
diff --git a/libc/arch-x86/atom/string/sse2-strlen-atom.S b/libc/arch-x86/atom/string/sse2-strlen-atom.S
index 81768fb..6a1acfb 100644
--- a/libc/arch-x86/atom/string/sse2-strlen-atom.S
+++ b/libc/arch-x86/atom/string/sse2-strlen-atom.S
@@ -31,7 +31,7 @@
 #ifndef USE_AS_STRCAT
 
 # ifndef STRLEN
-#  define STRLEN strlen
+#  define STRLEN strlen_atom
 # endif
 
 # ifndef L
diff --git a/libc/arch-x86/atom/string/ssse3-memcmp-atom.S b/libc/arch-x86/atom/string/ssse3-memcmp-atom.S
index 0387084..be2c4f6 100644
--- a/libc/arch-x86/atom/string/ssse3-memcmp-atom.S
+++ b/libc/arch-x86/atom/string/ssse3-memcmp-atom.S
@@ -76,7 +76,7 @@
 #endif
 
 #ifndef MEMCMP
-# define MEMCMP	memcmp
+# define MEMCMP	memcmp_atom
 #endif
 
 #define CFI_PUSH(REG)	\
diff --git a/libc/arch-x86/atom/string/ssse3-memcpy-atom.S b/libc/arch-x86/atom/string/ssse3-memcpy-atom.S
index 2b3b7a5..fa67188 100644
--- a/libc/arch-x86/atom/string/ssse3-memcpy-atom.S
+++ b/libc/arch-x86/atom/string/ssse3-memcpy-atom.S
@@ -31,7 +31,7 @@
 #include "cache.h"
 
 #ifndef MEMCPY
-# define MEMCPY	memcpy
+# define MEMCPY	memcpy_atom
 #endif
 
 #ifndef USE_AS_MEMMOVE
@@ -3133,4 +3133,4 @@
 
 END (MEMCPY)
 
-ALIAS_SYMBOL(memmove, MEMCPY)
+ALIAS_SYMBOL(memmove_atom, MEMCPY)
diff --git a/libc/arch-x86/atom/string/ssse3-strcat-atom.S b/libc/arch-x86/atom/string/ssse3-strcat-atom.S
index d9b6129..8d8e89d 100644
--- a/libc/arch-x86/atom/string/ssse3-strcat-atom.S
+++ b/libc/arch-x86/atom/string/ssse3-strcat-atom.S
@@ -87,7 +87,7 @@
 #define POP(REG)	popl REG; CFI_POP (REG)
 
 #ifndef STRCAT
-# define STRCAT	strcat
+# define STRCAT	strcat_ssse3
 #endif
 
 #define PARMS	4
@@ -617,4 +617,4 @@
 	RETURN1
 
 #endif
-END (STRCAT)
+END (STRCAT_ssse3)
diff --git a/libc/arch-x86/atom/string/ssse3-strcmp-atom.S b/libc/arch-x86/atom/string/ssse3-strcmp-atom.S
index ee253b9..08f6d4a 100644
--- a/libc/arch-x86/atom/string/ssse3-strcmp-atom.S
+++ b/libc/arch-x86/atom/string/ssse3-strcmp-atom.S
@@ -108,7 +108,7 @@
 #endif
 
 #ifndef STRCMP
-# define STRCMP strcmp
+# define STRCMP strcmp_ssse3
 #endif
 
 	.section .text.ssse3,"ax",@progbits
diff --git a/libc/arch-x86/atom/string/ssse3-strcpy-atom.S b/libc/arch-x86/atom/string/ssse3-strcpy-atom.S
index 3690b0d..45b0c02 100644
--- a/libc/arch-x86/atom/string/ssse3-strcpy-atom.S
+++ b/libc/arch-x86/atom/string/ssse3-strcpy-atom.S
@@ -81,7 +81,7 @@
 # define POP(REG)	popl REG; CFI_POP (REG)
 
 # ifndef STRCPY
-#  define STRCPY  strcpy
+#  define STRCPY  strcpy_atom
 # endif
 
 # ifdef USE_AS_STRNCPY
diff --git a/libc/arch-x86/atom/string/ssse3-strlcat-atom.S b/libc/arch-x86/atom/string/ssse3-strlcat-atom.S
index daaf254..055b489 100644
--- a/libc/arch-x86/atom/string/ssse3-strlcat-atom.S
+++ b/libc/arch-x86/atom/string/ssse3-strlcat-atom.S
@@ -82,7 +82,7 @@
 #define LEN	SRC+4
 
 	.text
-ENTRY (strlcat)
+ENTRY (strlcat_ssse3)
 	mov	DST(%esp), %edx
 	PUSH	(%ebx)
 	mov	LEN(%esp), %ebx
diff --git a/libc/arch-x86/atom/string/ssse3-strlcpy-atom.S b/libc/arch-x86/atom/string/ssse3-strlcpy-atom.S
index cdb17cc..1671da6 100644
--- a/libc/arch-x86/atom/string/ssse3-strlcpy-atom.S
+++ b/libc/arch-x86/atom/string/ssse3-strlcpy-atom.S
@@ -29,8 +29,8 @@
 */
 
 #define USE_AS_STRNCPY
-#define STRCPY strlcpy
-#define STRLEN strlcpy
+#define STRCPY strlcpy_ssse3
+#define STRLEN strlcpy_ssse3
 #define USE_AS_STRLCPY
 #include "ssse3-strcpy-atom.S"
 
diff --git a/libc/arch-x86/atom/string/ssse3-strncat-atom.S b/libc/arch-x86/atom/string/ssse3-strncat-atom.S
index 5618771..ccb08a7 100644
--- a/libc/arch-x86/atom/string/ssse3-strncat-atom.S
+++ b/libc/arch-x86/atom/string/ssse3-strncat-atom.S
@@ -28,7 +28,7 @@
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
-#define STRCAT  strncat
+#define STRCAT  strncat_ssse3
 #define USE_AS_STRNCAT
 
 #include "ssse3-strcat-atom.S"
diff --git a/libc/arch-x86/atom/string/ssse3-strncmp-atom.S b/libc/arch-x86/atom/string/ssse3-strncmp-atom.S
index 4762d7e..2bf5002 100644
--- a/libc/arch-x86/atom/string/ssse3-strncmp-atom.S
+++ b/libc/arch-x86/atom/string/ssse3-strncmp-atom.S
@@ -30,6 +30,6 @@
 
 
 #define USE_AS_STRNCMP
-#define STRCMP  strncmp
+#define STRCMP  strncmp_ssse3
 #include "ssse3-strcmp-atom.S"
 
diff --git a/libc/arch-x86/atom/string/ssse3-strncpy-atom.S b/libc/arch-x86/atom/string/ssse3-strncpy-atom.S
index 0948b6d..0c27ffe 100644
--- a/libc/arch-x86/atom/string/ssse3-strncpy-atom.S
+++ b/libc/arch-x86/atom/string/ssse3-strncpy-atom.S
@@ -29,5 +29,5 @@
 */
 
 #define USE_AS_STRNCPY
-#define STRCPY strncpy
+#define STRCPY strncpy_atom
 #include "ssse3-strcpy-atom.S"
diff --git a/libc/arch-x86/atom/string/ssse3-wcscat-atom.S b/libc/arch-x86/atom/string/ssse3-wcscat-atom.S
index 8a389a3..a307983 100644
--- a/libc/arch-x86/atom/string/ssse3-wcscat-atom.S
+++ b/libc/arch-x86/atom/string/ssse3-wcscat-atom.S
@@ -85,7 +85,7 @@
 #define USE_AS_WCSCAT
 
 .text
-ENTRY (wcscat)
+ENTRY (wcscat_ssse3)
 	PUSH    (%edi)
 	mov	STR1(%esp), %edi
 	mov	%edi, %edx
@@ -111,4 +111,4 @@
 #define RETURN  POP(%edi);	ret;	CFI_PUSH(%edi)
 #include "ssse3-wcscpy-atom.S"
 
-END (wcscat)
+END (wcscat_ssse3)
diff --git a/libc/arch-x86/atom/string/ssse3-wcscpy-atom.S b/libc/arch-x86/atom/string/ssse3-wcscpy-atom.S
index 27cb61e..80aa15f 100644
--- a/libc/arch-x86/atom/string/ssse3-wcscpy-atom.S
+++ b/libc/arch-x86/atom/string/ssse3-wcscpy-atom.S
@@ -88,7 +88,7 @@
 # define LEN	STR2+4
 
 .text
-ENTRY (wcscpy)
+ENTRY (wcscpy_ssse3)
 	mov	STR1(%esp), %edx
 	mov	STR2(%esp), %ecx
 
@@ -648,5 +648,5 @@
 	ret
 
 #ifndef USE_AS_WCSCAT
-END (wcscpy)
+END (wcscpy_ssse3)
 #endif
diff --git a/libc/arch-x86/atom/string/ssse3-wmemcmp-atom.S b/libc/arch-x86/atom/string/ssse3-wmemcmp-atom.S
index 2c3fa02..a81b78b 100644
--- a/libc/arch-x86/atom/string/ssse3-wmemcmp-atom.S
+++ b/libc/arch-x86/atom/string/ssse3-wmemcmp-atom.S
@@ -28,7 +28,7 @@
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
-#define MEMCMP  wmemcmp
+#define MEMCMP  wmemcmp_atom
 
 #define USE_WCHAR
 #define USE_AS_WMEMCMP 1
diff --git a/libc/arch-x86/dynamic_function_dispatch.cpp b/libc/arch-x86/dynamic_function_dispatch.cpp
new file mode 100644
index 0000000..a925190
--- /dev/null
+++ b/libc/arch-x86/dynamic_function_dispatch.cpp
@@ -0,0 +1,195 @@
+/*
+ * 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" {
+
+struct __processor_model {
+    unsigned int __cpu_vendor;
+    unsigned int __cpu_type;
+    unsigned int __cpu_subtype;
+    unsigned int __cpu_features[1];
+};
+
+__attribute__((visibility("hidden")))
+extern struct __processor_model __cpu_model;
+
+// These definitions have to match the values in
+// llvm/include/llvm/Support/X86TargetParser.def
+static constexpr int SSSE3  = 6;
+static constexpr int SSE4_1 = 7;
+static constexpr int ATOM   = 1;
+
+// __builtin_cpu_supports and __builtin_cpu_is can not be used here. They
+// don't access __cpu_model directly but use GOT.
+// See https://reviews.llvm.org/D53850
+static bool cpu_supports(unsigned int feature) {
+    return (__cpu_model.__cpu_features[0] & (1U << feature)) != 0;
+}
+
+static bool cpu_is(unsigned int type) {
+    return (__cpu_model.__cpu_type == type);
+}
+
+#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 (cpu_is(ATOM)) RETURN_FUNC(memcmp_func, memcmp_atom);
+    if (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 (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 (cpu_is(ATOM)) RETURN_FUNC(__memset_chk_func, __memset_chk_atom);
+    RETURN_FUNC(__memset_chk_func, __memset_chk_generic);
+}
+
+typedef void* memcpy_func(void*, const void*, size_t);
+DEFINE_IFUNC_FOR(memcpy) {
+    __builtin_cpu_init();
+    if (cpu_is(ATOM)) RETURN_FUNC(memcpy_func, memcpy_atom);
+    RETURN_FUNC(memcpy_func, memcpy_generic);
+}
+
+typedef void* memmove_func(void* __dst, const void* __src, size_t __n);
+DEFINE_IFUNC_FOR(memmove) {
+    __builtin_cpu_init();
+    if (cpu_is(ATOM)) RETURN_FUNC(memmove_func, memmove_atom);
+    RETURN_FUNC(memmove_func, memmove_generic);
+}
+
+typedef char* strcpy_func(char* __dst, const char* __src);
+DEFINE_IFUNC_FOR(strcpy) {
+    __builtin_cpu_init();
+    if (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 (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 (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 (cpu_supports(SSE4_1)) RETURN_FUNC(wmemcmp_func, wmemcmp_sse4);
+    if (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 (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 (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 (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 (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 (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 (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 (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 (cpu_supports(SSSE3)) RETURN_FUNC(wcscpy_func, wcscpy_ssse3);
+    RETURN_FUNC(wcscpy_func, wcscpy_freebsd);
+}
+
+}  // extern "C"
diff --git a/libc/arch-x86/generic/string/memcmp.S b/libc/arch-x86/generic/string/memcmp.S
index ef36b4f..1d327c7 100644
--- a/libc/arch-x86/generic/string/memcmp.S
+++ b/libc/arch-x86/generic/string/memcmp.S
@@ -6,7 +6,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(memcmp)
+ENTRY(memcmp_generic)
 	pushl	%edi
 	pushl	%esi
 	movl	12(%esp),%edi
@@ -41,4 +41,4 @@
 	popl	%esi
 	popl	%edi
 	ret
-END(memcmp)
+END(memcmp_generic)
diff --git a/libc/arch-x86/generic/string/strcat.S b/libc/arch-x86/generic/string/strcat.S
index 49e8eee..e2e9623 100644
--- a/libc/arch-x86/generic/string/strcat.S
+++ b/libc/arch-x86/generic/string/strcat.S
@@ -19,7 +19,7 @@
  * cache.
  */
 
-ENTRY(strcat)
+ENTRY(strcat_generic)
 	pushl	%edi			/* save edi */
 	movl	8(%esp),%edi		/* dst address */
 	movl	12(%esp),%edx		/* src address */
@@ -71,4 +71,4 @@
 L2:	popl	%eax			/* pop destination address */
 	popl	%edi			/* restore edi */
 	ret
-END(strcat)
+END(strcat_generic)
diff --git a/libc/arch-x86/generic/string/strcmp.S b/libc/arch-x86/generic/string/strcmp.S
index 580f4d5..7b003e8 100644
--- a/libc/arch-x86/generic/string/strcmp.S
+++ b/libc/arch-x86/generic/string/strcmp.S
@@ -12,7 +12,7 @@
  * cache.
  */
 
-ENTRY(strcmp)
+ENTRY(strcmp_generic)
 	movl	0x04(%esp),%eax
 	movl	0x08(%esp),%edx
 	jmp	L2			/* Jump into the loop! */
@@ -79,4 +79,4 @@
 	movzbl	(%edx),%edx
 	subl	%edx,%eax
 	ret
-END(strcmp)
+END(strcmp_generic)
diff --git a/libc/arch-x86/generic/string/strlcat.c b/libc/arch-x86/generic/string/strlcat.c
new file mode 100644
index 0000000..95c34a3
--- /dev/null
+++ b/libc/arch-x86/generic/string/strlcat.c
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2018 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 <upstream-openbsd/android/include/openbsd-compat.h>
+
+#define strlcat strlcat_openbsd
+#include <upstream-openbsd/lib/libc/string/strlcat.c>
diff --git a/libc/arch-x86/generic/string/strlcpy.c b/libc/arch-x86/generic/string/strlcpy.c
new file mode 100644
index 0000000..8d4047c
--- /dev/null
+++ b/libc/arch-x86/generic/string/strlcpy.c
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2018 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 <upstream-openbsd/android/include/openbsd-compat.h>
+
+#define strlcpy strlcpy_openbsd
+#include <upstream-openbsd/lib/libc/string/strlcpy.c>
diff --git a/libc/arch-x86/generic/string/strncat.c b/libc/arch-x86/generic/string/strncat.c
new file mode 100644
index 0000000..687e560
--- /dev/null
+++ b/libc/arch-x86/generic/string/strncat.c
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2018 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 <upstream-openbsd/android/include/openbsd-compat.h>
+
+#define strncat strncat_openbsd
+#include <upstream-openbsd/lib/libc/string/strncat.c>
diff --git a/libc/arch-x86/generic/string/strncmp.S b/libc/arch-x86/generic/string/strncmp.S
index 9ba83a1..6d9f23c 100644
--- a/libc/arch-x86/generic/string/strncmp.S
+++ b/libc/arch-x86/generic/string/strncmp.S
@@ -12,7 +12,7 @@
  * cache.
  */
 
-ENTRY(strncmp)
+ENTRY(strncmp_generic)
 	pushl	%ebx
 	movl	8(%esp),%eax
 	movl	12(%esp),%ecx
@@ -111,4 +111,4 @@
 L4:	xorl	%eax,%eax
 	popl	%ebx
 	ret
-END(strncmp)
+END(strncmp_generic)
diff --git a/libc/arch-x86/generic/string/wcscat.c b/libc/arch-x86/generic/string/wcscat.c
new file mode 100644
index 0000000..a102551
--- /dev/null
+++ b/libc/arch-x86/generic/string/wcscat.c
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+
+#define wcscat wcscat_freebsd
+#include <upstream-freebsd/lib/libc/string/wcscat.c>
diff --git a/libc/arch-x86/generic/string/wcscpy.c b/libc/arch-x86/generic/string/wcscpy.c
new file mode 100644
index 0000000..10fb66d
--- /dev/null
+++ b/libc/arch-x86/generic/string/wcscpy.c
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+
+#define wcscpy wcscpy_freebsd
+#include <upstream-freebsd/lib/libc/string/wcscpy.c>
diff --git a/libc/arch-x86/generic/string/wmemcmp.c b/libc/arch-x86/generic/string/wmemcmp.c
new file mode 100644
index 0000000..9d5e929
--- /dev/null
+++ b/libc/arch-x86/generic/string/wmemcmp.c
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+
+#define wmemcmp wmemcmp_freebsd
+#include <upstream-freebsd/lib/libc/string/wmemcmp.c>
diff --git a/libc/arch-x86/silvermont/string/sse2-memmove-slm.S b/libc/arch-x86/silvermont/string/sse2-memmove-slm.S
index ceada1b..48087d8 100644
--- a/libc/arch-x86/silvermont/string/sse2-memmove-slm.S
+++ b/libc/arch-x86/silvermont/string/sse2-memmove-slm.S
@@ -31,7 +31,7 @@
 #include "cache.h"
 
 #ifndef MEMMOVE
-# define MEMMOVE	memmove
+# define MEMMOVE	memmove_generic
 #endif
 
 #ifndef L
@@ -544,4 +544,4 @@
 
 END (MEMMOVE)
 
-ALIAS_SYMBOL(memcpy, MEMMOVE)
+ALIAS_SYMBOL(memcpy_generic, MEMMOVE)
diff --git a/libc/arch-x86/silvermont/string/sse2-memset-slm.S b/libc/arch-x86/silvermont/string/sse2-memset-slm.S
index 03a552d..adaccae 100644
--- a/libc/arch-x86/silvermont/string/sse2-memset-slm.S
+++ b/libc/arch-x86/silvermont/string/sse2-memset-slm.S
@@ -86,7 +86,7 @@
 	movl	(%esp), %ebx
 	ret
 
-ENTRY(__memset_chk)
+ENTRY(__memset_chk_generic)
   ENTRANCE
 
   movl LEN(%esp), %ecx
@@ -95,11 +95,11 @@
 
   POP(%ebx) // Undo ENTRANCE without returning.
   jmp __memset_chk_fail
-END(__memset_chk)
+END(__memset_chk_generic)
 
 	.section .text.sse2,"ax",@progbits
 	ALIGN(4)
-ENTRY(memset)
+ENTRY(memset_generic)
 	ENTRANCE
 
 	movl	LEN(%esp), %ecx
@@ -758,4 +758,4 @@
 	SETRTNVAL
 	RETURN_END
 
-END(memset)
+END(memset_generic)
diff --git a/libc/arch-x86/silvermont/string/sse2-strcpy-slm.S b/libc/arch-x86/silvermont/string/sse2-strcpy-slm.S
index b5d84b5..22ceeab 100755
--- a/libc/arch-x86/silvermont/string/sse2-strcpy-slm.S
+++ b/libc/arch-x86/silvermont/string/sse2-strcpy-slm.S
@@ -79,7 +79,7 @@
 #define POP(REG) popl REG; CFI_POP (REG)
 
 #ifndef STRCPY
-# define STRCPY  strcpy
+# define STRCPY  strcpy_generic
 #endif
 
 #ifdef USE_AS_STPNCPY
diff --git a/libc/arch-x86/silvermont/string/sse2-strlen-slm.S b/libc/arch-x86/silvermont/string/sse2-strlen-slm.S
index 27cc025..b805ad6 100755
--- a/libc/arch-x86/silvermont/string/sse2-strlen-slm.S
+++ b/libc/arch-x86/silvermont/string/sse2-strlen-slm.S
@@ -29,7 +29,7 @@
 */
 
 #ifndef STRLEN
-# define STRLEN strlen
+# define STRLEN strlen_generic
 #endif
 
 #ifndef L
diff --git a/libc/arch-x86/silvermont/string/sse2-strncpy-slm.S b/libc/arch-x86/silvermont/string/sse2-strncpy-slm.S
index 591419f..aff7fb9 100755
--- a/libc/arch-x86/silvermont/string/sse2-strncpy-slm.S
+++ b/libc/arch-x86/silvermont/string/sse2-strncpy-slm.S
@@ -29,5 +29,5 @@
 */
 
 #define USE_AS_STRNCPY
-#define STRCPY strncpy
+#define STRCPY strncpy_generic
 #include "sse2-strcpy-slm.S"
diff --git a/libc/arch-x86/silvermont/string/sse4-memcmp-slm.S b/libc/arch-x86/silvermont/string/sse4-memcmp-slm.S
index e5028ff..f151168 100755
--- a/libc/arch-x86/silvermont/string/sse4-memcmp-slm.S
+++ b/libc/arch-x86/silvermont/string/sse4-memcmp-slm.S
@@ -76,7 +76,7 @@
 #endif
 
 #ifndef MEMCMP
-# define MEMCMP	memcmp
+# define MEMCMP	memcmp_sse4
 #endif
 
 #define CFI_PUSH(REG)	\
diff --git a/libc/arch-x86/silvermont/string/sse4-wmemcmp-slm.S b/libc/arch-x86/silvermont/string/sse4-wmemcmp-slm.S
index 2c350bb..2bf92f5 100755
--- a/libc/arch-x86/silvermont/string/sse4-wmemcmp-slm.S
+++ b/libc/arch-x86/silvermont/string/sse4-wmemcmp-slm.S
@@ -29,5 +29,5 @@
 */
 
 #define USE_AS_WMEMCMP
-#define MEMCMP wmemcmp
+#define MEMCMP wmemcmp_sse4
 #include "sse4-memcmp-slm.S"
diff --git a/libc/arch-x86/static_function_dispatch.S b/libc/arch-x86/static_function_dispatch.S
new file mode 100644
index 0000000..5f879ed
--- /dev/null
+++ b/libc/arch-x86/static_function_dispatch.S
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2018 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 <private/bionic_asm.h>
+
+#define FUNCTION_DELEGATE(name, impl) \
+ENTRY(name); \
+    jmp impl; \
+END(name)
+
+FUNCTION_DELEGATE(memcmp, memcmp_generic)
+FUNCTION_DELEGATE(memset, memset_generic)
+FUNCTION_DELEGATE(__memset_chk, __memset_chk_generic)
+FUNCTION_DELEGATE(memcpy, memcpy_generic)
+FUNCTION_DELEGATE(memmove, memmove_generic)
+FUNCTION_DELEGATE(strcpy, strcpy_generic)
+FUNCTION_DELEGATE(strncpy, strncpy_generic)
+FUNCTION_DELEGATE(strlen, strlen_generic)
+FUNCTION_DELEGATE(strcmp, strcmp_generic)
+FUNCTION_DELEGATE(strncmp, strncmp_generic)
+FUNCTION_DELEGATE(strcat, strcat_generic)
+FUNCTION_DELEGATE(wmemcmp, wmemcmp_freebsd)
+FUNCTION_DELEGATE(wcscat, wcscat_freebsd)
+FUNCTION_DELEGATE(strncat, strncat_openbsd)
+FUNCTION_DELEGATE(strlcat, strlcat_openbsd)
+FUNCTION_DELEGATE(strlcpy, strlcpy_openbsd)
+FUNCTION_DELEGATE(wcscpy, wcscpy_freebsd)