| /* 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) 1991-2023 Free Software Foundation, Inc. |
| Contributed by Ron Guilmette (rfg@segfault.us.com) |
| |
| This file is part of GCC. |
| |
| 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. |
| |
| 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. |
| |
| 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. |
| |
| 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/>. */ |
| |
| /* 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. |
| */ |
| |
| #ifndef GCC_GBL_CTORS_H |
| #define GCC_GBL_CTORS_H |
| |
| /* 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 needs to get invoked at program start time. */ |
| |
| extern void __do_global_ctors (void); |
| |
| /* Declare the routine which needs to get invoked at program exit time. */ |
| |
| extern void __do_global_dtors (void); |
| |
| /* 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 { \ |
| __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 |
| |
| #endif /* GCC_GBL_CTORS_H */ |