2 * Copyright (C) 1996, 1998, 2000 Free Software Foundation, Inc.
3 * Contributed by Richard Henderson (rth@tamu.edu)
5 * This file is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2, or (at your option) any
10 * In addition to the permissions in the GNU General Public License, the
11 * Free Software Foundation gives you unlimited permission to link the
12 * compiled version of this file with other programs, and to distribute
13 * those programs without any restriction coming from the use of this
14 * file. (The General Public License restrictions do apply in other
15 * respects; for example, they cover modification of the file, and
16 * distribution when not linked into another program.)
18 * This file is distributed in the hope that it will be useful, but
19 * WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21 * General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; see the file COPYING. If not, write to
25 * the Free Software Foundation, 59 Temple Place - Suite 330,
26 * Boston, MA 02111-1307, USA.
28 * As a special exception, if you link this library with files
29 * compiled with GCC to produce an executable, this does not cause
30 * the resulting executable to be covered by the GNU General Public License.
31 * This exception does not however invalidate any other reasons why
32 * the executable file might be covered by the GNU General Public License.
35 #include "auto-host.h"
39 * Heads of the constructor/destructor lists.
42 /* The __*TOR_LIST__ symbols are not global because when this file is used
43 in a shared library, we do not want the symbol to fall over to the
44 application's lists. */
58 .section .eh_frame,"aw"
62 * Fragment of the ELF _fini routine that invokes our dtor cleanup.
67 /* Since the bits of the _fini function are spread across many
68 object files, each potentially with its own GP, we must
69 assume we need to load ours. Further, our .fini section
70 can easily be more than 4MB away from our .text bits so we
75 jsr $26,__do_global_dtors_aux
77 /* Must match the alignment we got from crti.o else we get
78 zero-filled holes in our _fini function and then SIGILL. */
82 * Fragment of the ELF _init routine that sets up the frame info.
88 jsr $26,__do_frame_setup
92 * Invoke our destructors in order.
97 /* Support recursive calls to exit. */
98 .type dtor_ptr,@object
101 .quad __DTOR_LIST__ + 8
103 /* A globally unique widget for c++ local destructors to hang off.
105 This has a unique value in every dso; in the main program its
106 value is zero. The object should be protected. This means the
107 instance in any dso or the main program is not used in any other
108 dso. The dynamic linker takes care of this. */
111 .type __dso_handle,@object
124 #ifdef HAVE_GAS_HIDDEN
131 .ent __do_global_dtors_aux
133 __do_global_dtors_aux:
143 /* Do c++ local destructors. */
144 lda $1,__cxa_finalize
147 jsr $26,__cxa_finalize
161 /* Remove our frame info. */
162 lda $1,__deregister_frame_info
164 lda $16,__EH_FRAME_BEGIN__
165 jsr $26,__deregister_frame_info
173 .end __do_global_dtors_aux
176 * Install our frame info.
179 /* ??? How can we rationally keep this size correct? */
182 .type frame_object,@object
183 .size frame_object, 48
191 .ent __do_frame_setup
201 lda $1,__register_frame_info
203 lda $16,__EH_FRAME_BEGIN__
205 jsr $26,__register_frame_info
212 .end __do_frame_setup
214 .weak __register_frame_info
215 .weak __deregister_frame_info