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
|
/* Configuration of lookup functions.
Copyright (C) 2000-2021 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, see
<https://www.gnu.org/licenses/>. */
#define ELF_FUNCTION_PTR_IS_SPECIAL
#define DL_UNMAP_IS_SPECIAL
#include <dl-fptr.h>
/* We do not support copy relocations for IA-64. */
#define DL_NO_COPY_RELOCS
/* Forward declaration. */
struct link_map;
extern void *_dl_symbol_address (struct link_map *map, const Elf64_Sym *ref);
rtld_hidden_proto (_dl_symbol_address)
#define DL_SYMBOL_ADDRESS(map, ref) _dl_symbol_address(map, ref)
extern Elf64_Addr _dl_lookup_address (const void *address);
#define DL_LOOKUP_ADDRESS(addr) _dl_lookup_address (addr)
extern void attribute_hidden _dl_unmap (struct link_map *map);
#define DL_UNMAP(map) _dl_unmap (map)
#define DL_DT_FUNCTION_ADDRESS(map, start, attr, addr) \
attr volatile unsigned long int fptr[2]; \
fptr[0] = (unsigned long int) (start); \
fptr[1] = (map)->l_info[DT_PLTGOT]->d_un.d_ptr; \
addr = (ElfW(Addr)) fptr; \
#define DL_CALL_DT_INIT(map, start, argc, argv, env) \
{ \
ElfW(Addr) addr; \
DL_DT_FUNCTION_ADDRESS(map, start, , addr) \
dl_init_t init = (dl_init_t) addr; \
init (argc, argv, env); \
}
#define DL_CALL_DT_FINI(map, start) \
{ \
ElfW(Addr) addr; \
DL_DT_FUNCTION_ADDRESS(map, start, , addr) \
fini_t fini = (fini_t) addr; \
fini (); \
}
/* The type of the return value of fixup/profile_fixup. */
#define DL_FIXUP_VALUE_TYPE struct fdesc
/* Construct a value of type DL_FIXUP_VALUE_TYPE from a code address
and a link map. */
#define DL_FIXUP_MAKE_VALUE(map, addr) \
((struct fdesc) { (addr), (map)->l_info[DT_PLTGOT]->d_un.d_ptr })
/* Extract the code address from a value of type DL_FIXUP_MAKE_VALUE.
*/
#define DL_FIXUP_VALUE_CODE_ADDR(value) (value).ip
#define DL_FIXUP_VALUE_ADDR(value) ((uintptr_t) &(value))
#define DL_FIXUP_ADDR_VALUE(addr) (*(struct fdesc *) (addr))
|
