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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/gbl-ctors.h
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+/* 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, 1996, 1998, 1999, 2000, 2003, 2009
+ 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 */