|
0
|
1 /* Definitions relating to the special __do_global_init function used
|
|
|
2 for getting g++ file-scope static objects constructed. This file
|
|
|
3 will get included either by libgcc2.c (for systems that don't support
|
|
|
4 a .init section) or by crtstuff.c (for those that do).
|
|
|
5 Copyright (C) 1991, 1995, 1996, 1998, 1999, 2000, 2003, 2009
|
|
|
6 Free Software Foundation, Inc.
|
|
|
7 Contributed by Ron Guilmette (rfg@segfault.us.com)
|
|
|
8
|
|
|
9 This file is part of GCC.
|
|
|
10
|
|
|
11 GCC is free software; you can redistribute it and/or modify it under
|
|
|
12 the terms of the GNU General Public License as published by the Free
|
|
|
13 Software Foundation; either version 3, or (at your option) any later
|
|
|
14 version.
|
|
|
15
|
|
|
16 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
|
17 WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
|
18 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
|
19 for more details.
|
|
|
20
|
|
|
21 Under Section 7 of GPL version 3, you are granted additional
|
|
|
22 permissions described in the GCC Runtime Library Exception, version
|
|
|
23 3.1, as published by the Free Software Foundation.
|
|
|
24
|
|
|
25 You should have received a copy of the GNU General Public License and
|
|
|
26 a copy of the GCC Runtime Library Exception along with this program;
|
|
|
27 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
|
28 <http://www.gnu.org/licenses/>. */
|
|
|
29
|
|
|
30 /* This file contains definitions and declarations of things
|
|
|
31 relating to the normal start-up-time invocation of C++
|
|
|
32 file-scope static object constructors. These declarations
|
|
|
33 and definitions are used by *both* libgcc2.c and by crtstuff.c.
|
|
|
34
|
|
|
35 Note that this file should only be compiled with GCC.
|
|
|
36 */
|
|
|
37
|
|
|
38 /* Declare a pointer to void function type. */
|
|
|
39
|
|
|
40 typedef void (*func_ptr) (void);
|
|
|
41
|
|
|
42 /* Declare the set of symbols use as begin and end markers for the lists
|
|
|
43 of global object constructors and global object destructors. */
|
|
|
44
|
|
|
45 extern func_ptr __CTOR_LIST__[];
|
|
|
46 extern func_ptr __DTOR_LIST__[];
|
|
|
47
|
|
|
48 /* Declare the routine which needs to get invoked at program start time. */
|
|
|
49
|
|
|
50 extern void __do_global_ctors (void);
|
|
|
51
|
|
|
52 /* Declare the routine which needs to get invoked at program exit time. */
|
|
|
53
|
|
|
54 extern void __do_global_dtors (void);
|
|
|
55
|
|
|
56 /* Define a macro with the code which needs to be executed at program
|
|
|
57 start-up time. This macro is used in two places in crtstuff.c (for
|
|
|
58 systems which support a .init section) and in one place in libgcc2.c
|
|
|
59 (for those system which do *not* support a .init section). For all
|
|
|
60 three places where this code might appear, it must be identical, so
|
|
|
61 we define it once here as a macro to avoid various instances getting
|
|
|
62 out-of-sync with one another. */
|
|
|
63
|
|
|
64 /* Some systems place the number of pointers
|
|
|
65 in the first word of the table.
|
|
|
66 On other systems, that word is -1.
|
|
|
67 In all cases, the table is null-terminated.
|
|
|
68 If the length is not recorded, count up to the null. */
|
|
|
69
|
|
|
70 /* Some systems use a different strategy for finding the ctors.
|
|
|
71 For example, svr3. */
|
|
|
72 #ifndef DO_GLOBAL_CTORS_BODY
|
|
|
73 #define DO_GLOBAL_CTORS_BODY \
|
|
|
74 do { \
|
|
|
75 unsigned long nptrs = (unsigned long) __CTOR_LIST__[0]; \
|
|
|
76 unsigned i; \
|
|
|
77 if (nptrs == (unsigned long)-1) \
|
|
|
78 for (nptrs = 0; __CTOR_LIST__[nptrs + 1] != 0; nptrs++); \
|
|
|
79 for (i = nptrs; i >= 1; i--) \
|
|
|
80 __CTOR_LIST__[i] (); \
|
|
|
81 } while (0)
|
|
|
82 #endif
|
|
|
83
|
