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
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
#define __SYSCALL_LL_E(x) (x)
#define __SYSCALL_LL_O(x) (x)
__attribute__((visibility("hidden")))
long (__syscall)(long, ...);
#define SYSCALL_RLIM_INFINITY (-1UL/2)
#include <sys/stat.h>
struct kernel_stat {
unsigned int st_dev;
unsigned int __pad1[3];
unsigned long long st_ino;
unsigned int st_mode;
unsigned int st_nlink;
int st_uid;
int st_gid;
unsigned int st_rdev;
unsigned int __pad2[3];
long long st_size;
unsigned int st_atime_sec;
unsigned int st_atime_nsec;
unsigned int st_mtime_sec;
unsigned int st_mtime_nsec;
unsigned int st_ctime_sec;
unsigned int st_ctime_nsec;
unsigned int st_blksize;
unsigned int __pad3;
unsigned long long st_blocks;
};
static void __stat_fix(struct kernel_stat *kst, struct stat *st)
{
st->st_dev = kst->st_dev;
st->st_ino = kst->st_ino;
st->st_mode = kst->st_mode;
st->st_nlink = kst->st_nlink;
st->st_uid = kst->st_uid;
st->st_gid = kst->st_gid;
st->st_rdev = kst->st_rdev;
st->st_size = kst->st_size;
st->st_atim.tv_sec = kst->st_atime_sec;
st->st_atim.tv_nsec = kst->st_atime_nsec;
st->st_mtim.tv_sec = kst->st_mtime_sec;
st->st_mtim.tv_nsec = kst->st_mtime_nsec;
st->st_ctim.tv_sec = kst->st_ctime_sec;
st->st_ctim.tv_nsec = kst->st_ctime_nsec;
st->st_blksize = kst->st_blksize;
st->st_blocks = kst->st_blocks;
}
static inline long __syscall0(long n)
{
register long r7 __asm__("$7");
register long r2 __asm__("$2");
__asm__ __volatile__ (
"daddu $2,$0,%2 ; syscall"
: "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7)
: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
"$14", "$15", "$24", "$25", "hi", "lo", "memory");
return r7 ? -r2 : r2;
}
static inline long __syscall1(long n, long a)
{
register long r4 __asm__("$4") = a;
register long r7 __asm__("$7");
register long r2 __asm__("$2");
__asm__ __volatile__ (
"daddu $2,$0,%2 ; syscall"
: "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7),
"r"(r4)
: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
"$14", "$15", "$24", "$25", "hi", "lo", "memory");
return r7 ? -r2 : r2;
}
static inline long __syscall2(long n, long a, long b)
{
struct kernel_stat kst;
long ret;
register long r4 __asm__("$4");
register long r5 __asm__("$5");
register long r7 __asm__("$7");
register long r2 __asm__("$2");
r5 = b;
if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
r5 = (long) &kst;
r4 = a;
__asm__ __volatile__ (
"daddu $2,$0,%2 ; syscall"
: "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7),
"r"(r4), "r"(r5)
: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
"$14", "$15", "$24", "$25", "hi", "lo", "memory");
if (r7) return -r2;
ret = r2;
if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
__stat_fix(&kst, (struct stat *)b);
return ret;
}
static inline long __syscall3(long n, long a, long b, long c)
{
struct kernel_stat kst;
long ret;
register long r4 __asm__("$4");
register long r5 __asm__("$5");
register long r6 __asm__("$6");
register long r7 __asm__("$7");
register long r2 __asm__("$2");
r5 = b;
if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
r5 = (long) &kst;
r4 = a;
r6 = c;
__asm__ __volatile__ (
"daddu $2,$0,%2 ; syscall"
: "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7),
"r"(r4), "r"(r5), "r"(r6)
: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
"$14", "$15", "$24", "$25", "hi", "lo", "memory");
if (r7) return -r2;
ret = r2;
if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
__stat_fix(&kst, (struct stat *)b);
return ret;
}
static inline long __syscall4(long n, long a, long b, long c, long d)
{
struct kernel_stat kst;
long ret;
register long r4 __asm__("$4");
register long r5 __asm__("$5");
register long r6 __asm__("$6");
register long r7 __asm__("$7");
register long r2 __asm__("$2");
r4 = a;
r5 = b;
r6 = c;
r7 = d;
if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
r5 = (long) &kst;
if (n == SYS_newfstatat)
r6 = (long) &kst;
__asm__ __volatile__ (
"daddu $2,$0,%2 ; syscall"
: "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7),
"r"(r4), "r"(r5), "r"(r6)
: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
"$14", "$15", "$24", "$25", "hi", "lo", "memory");
if (r7) return -r2;
ret = r2;
if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
__stat_fix(&kst, (struct stat *)b);
if (n == SYS_newfstatat)
__stat_fix(&kst, (struct stat *)c);
return ret;
}
static inline long __syscall5(long n, long a, long b, long c, long d, long e)
{
long r2;
long old_b = b;
long old_c = c;
struct kernel_stat kst;
if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
b = (long) &kst;
if (n == SYS_newfstatat)
c = (long) &kst;
r2 = (__syscall)(n, a, b, c, d, e);
if (r2 > -4096UL) return r2;
if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
__stat_fix(&kst, (struct stat *)old_b);
if (n == SYS_newfstatat)
__stat_fix(&kst, (struct stat *)old_c);
return r2;
}
static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
{
long r2;
long old_b = b;
long old_c = c;
struct kernel_stat kst;
if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
b = (long) &kst;
if (n == SYS_newfstatat)
c = (long) &kst;
r2 = (__syscall)(n, a, b, c, d, e, f);
if (r2 > -4096UL) return r2;
if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
__stat_fix(&kst, (struct stat *)old_b);
if (n == SYS_newfstatat)
__stat_fix(&kst, (struct stat *)old_c);
return r2;
}
#define VDSO_USEFUL
#define VDSO_CGT_SYM "__vdso_clock_gettime"
#define VDSO_CGT_VER "LINUX_2.6"
|
