summaryrefslogtreecommitdiff
path: root/gcc/config/rs6000/eabi-ctors.c
diff options
context:
space:
mode:
Diffstat (limited to 'gcc/config/rs6000/eabi-ctors.c')
-rwxr-xr-xgcc/config/rs6000/eabi-ctors.c92
1 files changed, 92 insertions, 0 deletions
diff --git a/gcc/config/rs6000/eabi-ctors.c b/gcc/config/rs6000/eabi-ctors.c
new file mode 100755
index 0000000..ebc23de
--- /dev/null
+++ b/gcc/config/rs6000/eabi-ctors.c
@@ -0,0 +1,92 @@
+/* Stripped down support to run global constructors and destructors on
+ embedded PowerPC systems.
+
+ Copyright (C) 1995 Free Software Foundation, Inc.
+ Contributed by Michael Meissner (meissner@cygnus.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. */
+
+/* As a special exception, if you link this library with other files,
+ some of which are compiled with GCC, to produce an executable,
+ this library does not by itself cause the resulting executable
+ to be covered by the GNU General Public License.
+ This exception does not however invalidate any other reasons why
+ the executable file might be covered by the GNU General Public License. */
+
+
+/* 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 __CTOR_END__ [];
+extern func_ptr __DTOR_LIST__[];
+extern func_ptr __DTOR_END__ [];
+
+extern void __do_global_ctors (void);
+extern void __do_global_dtors (void);
+
+extern void __init (), __fini ();
+
+/* The Solaris linker seems to incorrectly relocate PC relative relocations
+ to a different section (ie, calls to __init, __fini), so avoid it by
+ using a function pointer. */
+static void (*init_ptr) (void) = __init;
+static void (*fini_ptr) (void) = __fini;
+
+void (*__atexit)(func_ptr);
+
+/* Call all global constructors */
+void
+__do_global_ctors (void)
+{
+ func_ptr *ptr = &__CTOR_LIST__[0];
+ func_ptr *end = &__CTOR_END__[0];
+
+ if (__atexit)
+ __atexit (__do_global_dtors);
+
+ /* Call the constructors collected in the .ctors section. */
+ for ( ; ptr != end; ptr++)
+ if (*ptr)
+ (*ptr)();
+
+ /* Call the initialization function in the .init section. */
+ (*init_ptr) ();
+}
+
+/* Call all global destructors */
+void
+__do_global_dtors (void)
+{
+ func_ptr *ptr = &__DTOR_END__[0] - 1;
+ func_ptr *start = &__DTOR_LIST__[0];
+
+ /* Call the termination function in the .fini section. */
+ (*fini_ptr) ();
+
+ /* Call the destructors collected in the .dtors section. Run
+ the destructors in reverse order. */
+ for ( ; ptr >= start; ptr--)
+ if (*ptr)
+ (*ptr)();
+}
+