1 /*
2 * Copyright (C) 2019 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in
12 * the documentation and/or other materials provided with the
13 * distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <private/bionic_ifuncs.h>
30 #include <stddef.h>
31 #include <sys/auxv.h>
32
33 extern "C" {
34
35 typedef void* memchr_func(const void*, int, size_t);
DEFINE_IFUNC_FOR(memchr)36 DEFINE_IFUNC_FOR(memchr) {
37 if (arg->_hwcap2 & HWCAP2_MTE) {
38 RETURN_FUNC(memchr_func, __memchr_aarch64_mte);
39 } else {
40 RETURN_FUNC(memchr_func, __memchr_aarch64);
41 }
42 }
43
44 typedef int stpcpy_func(char*, const char*);
DEFINE_IFUNC_FOR(stpcpy)45 DEFINE_IFUNC_FOR(stpcpy) {
46 if (arg->_hwcap2 & HWCAP2_MTE) {
47 RETURN_FUNC(stpcpy_func, __stpcpy_aarch64_mte);
48 } else {
49 RETURN_FUNC(stpcpy_func, __stpcpy_aarch64);
50 }
51 }
52
53 typedef char* strchr_func(const char*, int);
DEFINE_IFUNC_FOR(strchr)54 DEFINE_IFUNC_FOR(strchr) {
55 if (arg->_hwcap2 & HWCAP2_MTE) {
56 RETURN_FUNC(strchr_func, __strchr_aarch64_mte);
57 } else {
58 RETURN_FUNC(strchr_func, __strchr_aarch64);
59 }
60 }
61
62 typedef char* strchrnul_func(const char*, int);
DEFINE_IFUNC_FOR(strchrnul)63 DEFINE_IFUNC_FOR(strchrnul) {
64 if (arg->_hwcap2 & HWCAP2_MTE) {
65 RETURN_FUNC(strchrnul_func, __strchrnul_aarch64_mte);
66 } else {
67 RETURN_FUNC(strchrnul_func, __strchrnul_aarch64);
68 }
69 }
70
71 typedef int strcmp_func(const char*, const char*);
DEFINE_IFUNC_FOR(strcmp)72 DEFINE_IFUNC_FOR(strcmp) {
73 if (arg->_hwcap2 & HWCAP2_MTE) {
74 RETURN_FUNC(strcmp_func, __strcmp_aarch64_mte);
75 } else {
76 RETURN_FUNC(strcmp_func, __strcmp_aarch64);
77 }
78 }
79
80 typedef int strcpy_func(char*, const char*);
DEFINE_IFUNC_FOR(strcpy)81 DEFINE_IFUNC_FOR(strcpy) {
82 if (arg->_hwcap2 & HWCAP2_MTE) {
83 RETURN_FUNC(strcpy_func, __strcpy_aarch64_mte);
84 } else {
85 RETURN_FUNC(strcpy_func, __strcpy_aarch64);
86 }
87 }
88
89 typedef size_t strlen_func(const char*);
DEFINE_IFUNC_FOR(strlen)90 DEFINE_IFUNC_FOR(strlen) {
91 if (arg->_hwcap2 & HWCAP2_MTE) {
92 RETURN_FUNC(strlen_func, __strlen_aarch64_mte);
93 } else {
94 RETURN_FUNC(strlen_func, __strlen_aarch64);
95 }
96 }
97
98 typedef int strncmp_func(const char*, const char*, int);
DEFINE_IFUNC_FOR(strncmp)99 DEFINE_IFUNC_FOR(strncmp) {
100 if (arg->_hwcap2 & HWCAP2_MTE) {
101 RETURN_FUNC(strncmp_func, __strncmp_aarch64_mte);
102 } else {
103 RETURN_FUNC(strncmp_func, __strncmp_aarch64);
104 }
105 }
106
107 typedef char* strrchr_func(const char*, int);
DEFINE_IFUNC_FOR(strrchr)108 DEFINE_IFUNC_FOR(strrchr) {
109 if (arg->_hwcap2 & HWCAP2_MTE) {
110 RETURN_FUNC(strrchr_func, __strrchr_aarch64_mte);
111 } else {
112 RETURN_FUNC(strrchr_func, __strrchr_aarch64);
113 }
114 }
115
116 } // extern "C"
117