Mercurial > hg > CbC > CbC_gcc
comparison gcc/gbl-ctors.h @ 0:a06113de4d67
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author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 |
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children | 77e2b8dfacca |
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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 |