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mirror of https://git.FreeBSD.org/src.git synced 2024-12-23 11:18:54 +00:00
freebsd/contrib/gcc/gbl-ctors.h
Peter Wemm a4cd5630b0 Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the
non-i386, non-unix, and generatable files have been trimmed, but can easily
be added in later if needed.

gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's
handy to have both available for reference for such little cost.

The freebsd-specific changes will then be committed, and once the dust has
settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00

89 lines
3.1 KiB
C

/* 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, 1995 Free Software Foundation, Inc.
Contributed by Ron Guilmette (rfg@segfault.us.com)
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, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, 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* libgcc2.c and by crtstuff.c.
Note that this file should only be compiled with GCC.
*/
#ifdef HAVE_ATEXIT
#ifdef WINNT
extern int atexit (void (*) (void));
#else
extern void atexit (void (*) (void));
#endif
#define ON_EXIT(FUNC,ARG) atexit ((FUNC))
#else
#ifdef sun
extern void on_exit (void*, void*);
#define ON_EXIT(FUNC,ARG) on_exit ((FUNC), (ARG))
#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 destructors. */
extern func_ptr __CTOR_LIST__[];
extern func_ptr __DTOR_LIST__[];
/* 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 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. */
/* 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. */
/* Some systems use a different strategy for finding the ctors.
For example, svr3. */
#ifndef DO_GLOBAL_CTORS_BODY
#define DO_GLOBAL_CTORS_BODY \
do { \
unsigned long nptrs = (unsigned long) __CTOR_LIST__[0]; \
unsigned i; \
if (nptrs == -1) \
for (nptrs = 0; __CTOR_LIST__[nptrs + 1] != 0; nptrs++); \
for (i = nptrs; i >= 1; i--) \
__CTOR_LIST__[i] (); \
} while (0)
#endif