1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* S390 version
* Copyright IBM Corp. 1999
* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
*/
#ifndef _S390_STRING_H_
#define _S390_STRING_H_
#ifndef _LINUX_TYPES_H
#include <linux/types.h>
#endif
#define __HAVE_ARCH_MEMCPY /* gcc builtin & arch function */
#define __HAVE_ARCH_MEMMOVE /* gcc builtin & arch function */
#define __HAVE_ARCH_MEMSET /* gcc builtin & arch function */
#define __HAVE_ARCH_MEMSET16 /* arch function */
#define __HAVE_ARCH_MEMSET32 /* arch function */
#define __HAVE_ARCH_MEMSET64 /* arch function */
void *memcpy(void *dest, const void *src, size_t n);
void *memset(void *s, int c, size_t n);
void *memmove(void *dest, const void *src, size_t n);
#ifndef CONFIG_KASAN
#define __HAVE_ARCH_MEMCHR /* inline & arch function */
#define __HAVE_ARCH_MEMCMP /* arch function */
#define __HAVE_ARCH_MEMSCAN /* inline & arch function */
#define __HAVE_ARCH_STRCAT /* inline & arch function */
#define __HAVE_ARCH_STRCMP /* arch function */
#define __HAVE_ARCH_STRCPY /* inline & arch function */
#define __HAVE_ARCH_STRLCAT /* arch function */
#define __HAVE_ARCH_STRLCPY /* arch function */
#define __HAVE_ARCH_STRLEN /* inline & arch function */
#define __HAVE_ARCH_STRNCAT /* arch function */
#define __HAVE_ARCH_STRNCPY /* arch function */
#define __HAVE_ARCH_STRNLEN /* inline & arch function */
#define __HAVE_ARCH_STRRCHR /* arch function */
#define __HAVE_ARCH_STRSTR /* arch function */
/* Prototypes for non-inlined arch strings functions. */
int memcmp(const void *s1, const void *s2, size_t n);
int strcmp(const char *s1, const char *s2);
size_t strlcat(char *dest, const char *src, size_t n);
size_t strlcpy(char *dest, const char *src, size_t size);
char *strncat(char *dest, const char *src, size_t n);
char *strncpy(char *dest, const char *src, size_t n);
char *strrchr(const char *s, int c);
char *strstr(const char *s1, const char *s2);
#endif /* !CONFIG_KASAN */
#undef __HAVE_ARCH_STRCHR
#undef __HAVE_ARCH_STRNCHR
#undef __HAVE_ARCH_STRNCMP
#undef __HAVE_ARCH_STRPBRK
#undef __HAVE_ARCH_STRSEP
#undef __HAVE_ARCH_STRSPN
#if defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__)
extern void *__memcpy(void *dest, const void *src, size_t n);
extern void *__memset(void *s, int c, size_t n);
extern void *__memmove(void *dest, const void *src, size_t n);
/*
* For files that are not instrumented (e.g. mm/slub.c) we
* should use not instrumented version of mem* functions.
*/
#define memcpy(dst, src, len) __memcpy(dst, src, len)
#define memmove(dst, src, len) __memmove(dst, src, len)
#define memset(s, c, n) __memset(s, c, n)
#define strlen(s) __strlen(s)
#define __no_sanitize_prefix_strfunc(x) __##x
#ifndef __NO_FORTIFY
#define __NO_FORTIFY /* FORTIFY_SOURCE uses __builtin_memcpy, etc. */
#endif
#else
#define __no_sanitize_prefix_strfunc(x) x
#endif /* defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__) */
void *__memset16(uint16_t *s, uint16_t v, size_t count);
void *__memset32(uint32_t *s, uint32_t v, size_t count);
void *__memset64(uint64_t *s, uint64_t v, size_t count);
static inline void *memset16(uint16_t *s, uint16_t v, size_t count)
{
return __memset16(s, v, count * sizeof(v));
}
static inline void *memset32(uint32_t *s, uint32_t v, size_t count)
{
return __memset32(s, v, count * sizeof(v));
}
static inline void *memset64(uint64_t *s, uint64_t v, size_t count)
{
return __memset64(s, v, count * sizeof(v));
}
#if !defined(IN_ARCH_STRING_C) && (!defined(CONFIG_FORTIFY_SOURCE) || defined(__NO_FORTIFY))
#ifdef __HAVE_ARCH_MEMCHR
static inline void *memchr(const void * s, int c, size_t n)
{
register int r0 asm("0") = (char) c;
const void *ret = s + n;
asm volatile(
"0: srst %0,%1\n"
" jo 0b\n"
" jl 1f\n"
" la %0,0\n"
"1:"
: "+a" (ret), "+&a" (s) : "d" (r0) : "cc", "memory");
return (void *) ret;
}
#endif
#ifdef __HAVE_ARCH_MEMSCAN
static inline void *memscan(void *s, int c, size_t n)
{
register int r0 asm("0") = (char) c;
const void *ret = s + n;
asm volatile(
"0: srst %0,%1\n"
" jo 0b\n"
: "+a" (ret), "+&a" (s) : "d" (r0) : "cc", "memory");
return (void *) ret;
}
#endif
#ifdef __HAVE_ARCH_STRCAT
static inline char *strcat(char *dst, const char *src)
{
register int r0 asm("0") = 0;
unsigned long dummy;
char *ret = dst;
asm volatile(
"0: srst %0,%1\n"
" jo 0b\n"
"1: mvst %0,%2\n"
" jo 1b"
: "=&a" (dummy), "+a" (dst), "+a" (src)
: "d" (r0), "0" (0) : "cc", "memory" );
return ret;
}
#endif
#ifdef __HAVE_ARCH_STRCPY
static inline char *strcpy(char *dst, const char *src)
{
register int r0 asm("0") = 0;
char *ret = dst;
asm volatile(
"0: mvst %0,%1\n"
" jo 0b"
: "+&a" (dst), "+&a" (src) : "d" (r0)
: "cc", "memory");
return ret;
}
#endif
#if defined(__HAVE_ARCH_STRLEN) || (defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__))
static inline size_t __no_sanitize_prefix_strfunc(strlen)(const char *s)
{
register unsigned long r0 asm("0") = 0;
const char *tmp = s;
asm volatile(
"0: srst %0,%1\n"
" jo 0b"
: "+d" (r0), "+a" (tmp) : : "cc", "memory");
return r0 - (unsigned long) s;
}
#endif
#ifdef __HAVE_ARCH_STRNLEN
static inline size_t strnlen(const char * s, size_t n)
{
register int r0 asm("0") = 0;
const char *tmp = s;
const char *end = s + n;
asm volatile(
"0: srst %0,%1\n"
" jo 0b"
: "+a" (end), "+a" (tmp) : "d" (r0) : "cc", "memory");
return end - s;
}
#endif
#else /* IN_ARCH_STRING_C */
void *memchr(const void * s, int c, size_t n);
void *memscan(void *s, int c, size_t n);
char *strcat(char *dst, const char *src);
char *strcpy(char *dst, const char *src);
size_t strlen(const char *s);
size_t strnlen(const char * s, size_t n);
#endif /* !IN_ARCH_STRING_C */
#endif /* __S390_STRING_H_ */
|
