0,0 → 1,86 |
/* Definitions relating to the special __do_global_init function used |
for getting g++ file-scope static objects constructed. This file |
will get included either by libgcc2.c (for systems that don't support |
a .init section) or by crtstuff.c (for those that do). |
Copyright (C) 1991-2015 Free Software Foundation, Inc. |
Contributed by Ron Guilmette (rfg@segfault.us.com) |
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This file is part of GCC. |
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GCC is free software; you can redistribute it and/or modify it under |
the terms of the GNU General Public License as published by the Free |
Software Foundation; either version 3, or (at your option) any later |
version. |
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GCC 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 General Public License |
for more details. |
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Under Section 7 of GPL version 3, you are granted additional |
permissions described in the GCC Runtime Library Exception, version |
3.1, as published by the Free Software Foundation. |
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You should have received a copy of the GNU General Public License and |
a copy of the GCC Runtime Library Exception along with this program; |
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
<http://www.gnu.org/licenses/>. */ |
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/* This file contains definitions and declarations of things |
relating to the normal start-up-time invocation of C++ |
file-scope static object constructors. These declarations |
and definitions are used by *both* libgcc2.c and by crtstuff.c. |
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Note that this file should only be compiled with GCC. |
*/ |
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#ifndef GCC_GBL_CTORS_H |
#define GCC_GBL_CTORS_H |
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/* Declare a pointer to void function type. */ |
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typedef void (*func_ptr) (void); |
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/* Declare the set of symbols use as begin and end markers for the lists |
of global object constructors and global object destructors. */ |
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extern func_ptr __CTOR_LIST__[]; |
extern func_ptr __DTOR_LIST__[]; |
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/* Declare the routine which needs to get invoked at program start time. */ |
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extern void __do_global_ctors (void); |
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/* Declare the routine which needs to get invoked at program exit time. */ |
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extern void __do_global_dtors (void); |
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/* Define a macro with the code which needs to be executed at program |
start-up time. This macro is used in two places in crtstuff.c (for |
systems which support a .init section) and in one place in libgcc2.c |
(for those system which do *not* support a .init section). For all |
three places where this code might appear, it must be identical, so |
we define it once here as a macro to avoid various instances getting |
out-of-sync with one another. */ |
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/* Some systems place the number of pointers |
in the first word of the table. |
On other systems, that word is -1. |
In all cases, the table is null-terminated. |
If the length is not recorded, count up to the null. */ |
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/* Some systems use a different strategy for finding the ctors. |
For example, svr3. */ |
#ifndef DO_GLOBAL_CTORS_BODY |
#define DO_GLOBAL_CTORS_BODY \ |
do { \ |
__SIZE_TYPE__ nptrs = (__SIZE_TYPE__) __CTOR_LIST__[0]; \ |
unsigned i; \ |
if (nptrs == (__SIZE_TYPE__)-1) \ |
for (nptrs = 0; __CTOR_LIST__[nptrs + 1] != 0; nptrs++); \ |
for (i = nptrs; i >= 1; i--) \ |
__CTOR_LIST__[i] (); \ |
} while (0) |
#endif |
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#endif /* GCC_GBL_CTORS_H */ |