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
|
/* Look up a symbol in the loaded objects.
Copyright (C) 1995-2005, 2006, 2007, 2009, 2010
Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
/* This file is based on the original eglibc-2.13 libc/elf/dl-lookup.c
code.
It has been split into two pieces dl-lookup.c and dl-lookupX.c,
the purpose of the split is to enable both 32-bit and 64-bit ELF
processing in the same application. This file contains the ELF
size neutral routines.
*/
#include <config.h>
#include <alloca.h>
#include <libintl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <dl-hash.h>
#include <assert.h>
#include <errno.h>
#include <elf.h>
#include "prelinktab.h"
#include "reloc.h"
#include "rtld.h"
struct unique_sym_table * _ns_unique_sym_table = NULL;
/* This file is from eglibc 2.13, libc/elf/dl-lookup.c
It has been split into two pieces dl-lookup.c and dl-lookupX.c,
the purpose of the split is to enable both 32-bit and 64-bit ELF
processing in the same application. This file contains the common
routines ... and is the entry to the overall set of files.
*/
/* We need this string more than once. */
static const char undefined_msg[] = "undefined symbol: ";
#define make_string(string, rest...) \
({ \
const char *all[] = { string, ## rest }; \
size_t len, cnt; \
char *result, *cp; \
\
len = 1; \
for (cnt = 0; cnt < sizeof (all) / sizeof (all[0]); ++cnt) \
len += strlen (all[cnt]); \
\
cp = result = alloca (len); \
for (cnt = 0; cnt < sizeof (all) / sizeof (all[0]); ++cnt) \
cp = __stpcpy (cp, all[cnt]); \
\
result; \
})
static uint_fast32_t
dl_new_hash (const char *s)
{
uint_fast32_t h = 5381;
unsigned char c = *s;
for (c = *s; c != '\0'; c = *++s)
h = h * 33 + c;
return h & 0xffffffff;
}
#undef RTLD_ELF_SIZE
#define RTLD_ELF_SIZE 32
#include "dl-lookupX.h"
#undef RTLD_ELF_SIZE
#define RTLD_ELF_SIZE 64
#include "dl-lookupX.h"
#undef RTLD_ELF_SIZE
void
rtld_setup_hash (struct ldlibs_link_map *map)
{
if (map)
{
if (map->elfclass == ELFCLASS32)
rtld_setup_hash32(map);
else if (map->elfclass == ELFCLASS64)
rtld_setup_hash64(map);
else
_dl_signal_error(EINVAL, map->l_name, NULL, "elfclass is not defined 32-bit or 64-bit!");
}
}
|
