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Diffstat (limited to 'contrib/gcc/gbl-ctors.h')
| -rw-r--r-- | contrib/gcc/gbl-ctors.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/contrib/gcc/gbl-ctors.h b/contrib/gcc/gbl-ctors.h new file mode 100644 index 000000000000..537df5014d57 --- /dev/null +++ b/contrib/gcc/gbl-ctors.h @@ -0,0 +1,88 @@ +/* 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 + |