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
|
/* Verify that changing xmm registers in audit library won't affect
function parameter passing/return. */
#include <dlfcn.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <bits/wordsize.h>
#include <gnu/lib-names.h>
#include <emmintrin.h>
unsigned int
la_version (unsigned int v)
{
setlinebuf (stdout);
printf ("version: %u\n", v);
char buf[20];
sprintf (buf, "%u", v);
return v;
}
void
la_activity (uintptr_t *cookie, unsigned int flag)
{
if (flag == LA_ACT_CONSISTENT)
printf ("activity: consistent\n");
else if (flag == LA_ACT_ADD)
printf ("activity: add\n");
else if (flag == LA_ACT_DELETE)
printf ("activity: delete\n");
else
printf ("activity: unknown activity %u\n", flag);
}
char *
la_objsearch (const char *name, uintptr_t *cookie, unsigned int flag)
{
char buf[100];
const char *flagstr;
if (flag == LA_SER_ORIG)
flagstr = "LA_SET_ORIG";
else if (flag == LA_SER_LIBPATH)
flagstr = "LA_SER_LIBPATH";
else if (flag == LA_SER_RUNPATH)
flagstr = "LA_SER_RUNPATH";
else if (flag == LA_SER_CONFIG)
flagstr = "LA_SER_CONFIG";
else if (flag == LA_SER_DEFAULT)
flagstr = "LA_SER_DEFAULT";
else if (flag == LA_SER_SECURE)
flagstr = "LA_SER_SECURE";
else
{
sprintf (buf, "unknown flag %d", flag);
flagstr = buf;
}
printf ("objsearch: %s, %s\n", name, flagstr);
return (char *) name;
}
unsigned int
la_objopen (struct link_map *l, Lmid_t lmid, uintptr_t *cookie)
{
printf ("objopen: %ld, %s\n", lmid, l->l_name);
return 3;
}
void
la_preinit (uintptr_t *cookie)
{
printf ("preinit\n");
}
unsigned int
la_objclose (uintptr_t *cookie)
{
printf ("objclose\n");
return 0;
}
uintptr_t
la_symbind64 (Elf64_Sym *sym, unsigned int ndx, uintptr_t *refcook,
uintptr_t *defcook, unsigned int *flags, const char *symname)
{
printf ("symbind64: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
symname, (long int) sym->st_value, ndx, *flags);
return sym->st_value;
}
#include <tst-audit.h>
ElfW(Addr)
pltenter (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
uintptr_t *defcook, La_regs *regs, unsigned int *flags,
const char *symname, long int *framesizep)
{
printf ("pltenter: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
symname, (long int) sym->st_value, ndx, *flags);
__m128i minusone = _mm_set1_epi32 (-1);
if (strcmp (symname, "audit_test") == 0)
{
__m128i zero = _mm_setzero_si128 ();
if (memcmp (®s->lr_xmm[0], &zero, sizeof (zero))
|| memcmp (®s->lr_xmm[1], &zero, sizeof (zero))
|| memcmp (®s->lr_xmm[2], &zero, sizeof (zero))
|| memcmp (®s->lr_xmm[3], &zero, sizeof (zero))
|| memcmp (®s->lr_xmm[4], &zero, sizeof (zero))
|| memcmp (®s->lr_xmm[5], &zero, sizeof (zero))
|| memcmp (®s->lr_xmm[6], &zero, sizeof (zero))
|| memcmp (®s->lr_xmm[7], &zero, sizeof (zero)))
abort ();
for (int i = 0; i < 8; i++)
regs->lr_xmm[i] = (La_x86_64_xmm) _mm_set1_epi32 (i + 1);
*framesizep = 1024;
}
asm volatile ("movdqa %0, %%xmm0" : : "x" (minusone) : "xmm0" );
asm volatile ("movdqa %0, %%xmm1" : : "x" (minusone) : "xmm1" );
asm volatile ("movdqa %0, %%xmm2" : : "x" (minusone) : "xmm2" );
asm volatile ("movdqa %0, %%xmm3" : : "x" (minusone) : "xmm3" );
asm volatile ("movdqa %0, %%xmm4" : : "x" (minusone) : "xmm4" );
asm volatile ("movdqa %0, %%xmm5" : : "x" (minusone) : "xmm5" );
asm volatile ("movdqa %0, %%xmm6" : : "x" (minusone) : "xmm6" );
asm volatile ("movdqa %0, %%xmm7" : : "x" (minusone) : "xmm7" );
return sym->st_value;
}
unsigned int
pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
uintptr_t *defcook, const La_regs *inregs, La_retval *outregs,
const char *symname)
{
printf ("pltexit: symname=%s, st_value=%#lx, ndx=%u, retval=%tu\n",
symname, (long int) sym->st_value, ndx,
(ptrdiff_t) outregs->int_retval);
__m128i xmm;
if (strcmp (symname, "audit_test") == 0)
{
__m128i zero = _mm_setzero_si128 ();
if (memcmp (&outregs->lrv_xmm0, &zero, sizeof (zero)))
abort ();
for (int i = 0; i < 8; i++)
{
xmm = _mm_set1_epi32 (i + 1);
if (memcmp (&inregs->lr_xmm[i], &xmm, sizeof (xmm)) != 0)
abort ();
}
outregs->lrv_xmm0 = (La_x86_64_xmm) _mm_set1_epi32 (0x12349876);
}
xmm = _mm_set1_epi32 (-1);
asm volatile ("movdqa %0, %%xmm0" : : "x" (xmm) : "xmm0" );
asm volatile ("movdqa %0, %%xmm1" : : "x" (xmm) : "xmm1" );
return 0;
}
|
GitWeb