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- /* Definitions relating to the special __do_global_init function used
- for getting g++ file-scope static objects constructed. This file
- wil get included either by gnulib2.c (for systems that don't support
- a .init section) or by crtstuff.c (for those that do).
-
- Written by Ron Guilmette (rfg@ncd.com)
-
- Copyright (C) 1991 Free Software Foundation, Inc.
-
- This file is part of GNU CC.
-
- GNU CC 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 2, or (at your option)
- any later version.
-
- GNU CC 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.
-
- You should have received a copy of the GNU General Public License
- along with GNU CC; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* 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* gnulib2.c and by crtstuff.c.
-
- Note that this file should only be compiled with GCC.
- */
-
- #ifdef sun
- extern void on_exit (void*, void*);
- #define ON_EXIT(FUNC,ARG) on_exit ((FUNC), (ARG))
- #else
- #ifdef HAVE_ATEXIT
- extern void atexit (void (*) (void));
- #define ON_EXIT(FUNC,ARG) atexit ((FUNC))
- #endif
- #endif
-
- /* Declare a pointer to void function type. */
-
- typedef void (*func_ptr) (void);
-
- /* Declare the set of symbols use as begin and end markers for the lists
- of global object constructors and global object descructors. */
-
- extern func_ptr __CTOR_LIST__[];
- extern func_ptr __CTOR_END__[];
- extern func_ptr __DTOR_LIST__[];
- extern func_ptr __DTOR_END__[];
-
- /* Declare the routine which need to get invoked at program exit time. */
-
- extern void __do_global_dtors ();
-
- /* 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 gnulib2.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. */
-
- /* There are two formats for the table __CTOR_LIST__:
- GNU ld: first word is number of pointers, followed by that many pointers.
- ELF/COFF: first word is -1, followed by pointers up to __CTOR_END__. */
-
- #define DO_GLOBAL_CTORS_BODY \
- do { \
- int nptrs = *(int *)__CTOR_LIST__; \
- /* GM Thu Sep 23 04:59:18 1993 : nicht nötig ON_EXIT (__do_global_dtors, 0); */ \
- if (nptrs != -1) \
- { \
- int i; \
- for (i = 1; i <= nptrs; i++) \
- __CTOR_LIST__[i] (); \
- } \
- else \
- { \
- func_ptr *p; \
- for (p = __CTOR_LIST__ + 1; p < __CTOR_END__; ) \
- (*p++) (); \
- } \
- } while (0)
-
-