2 * SPDX-License-Identifier: BSD-1-Clause
4 * Copyright 2018 Andrew Turner
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
12 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
13 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
14 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
15 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
16 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
17 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
18 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
19 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
20 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
21 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 #include <sys/cdefs.h>
25 __FBSDID("$FreeBSD$");
27 #include <sys/param.h>
31 typedef void (*crt_func)(void);
33 extern void *__dso_handle __hidden;
36 void *__dso_handle = 0;
38 void *__dso_handle = &__dso_handle;
39 void __cxa_finalize(void *) __weak_symbol;
42 * Call __cxa_finalize with the dso handle in shared objects.
43 * When we have ctors/dtors call from the dtor handler before calling
44 * any dtors, otherwise use a destructor.
47 __attribute__((destructor))
50 run_cxa_finalize(void)
53 if (__cxa_finalize != NULL)
54 __cxa_finalize(__dso_handle);
59 * On some architectures and toolchains we may need to call the .dtors.
60 * These are called in the order they are in the ELF file.
63 static void __do_global_dtors_aux(void) __used;
65 static crt_func __CTOR_LIST__[] __section(".ctors") __used = {
68 static crt_func __DTOR_LIST__[] __section(".dtors") __used = {
73 __do_global_dtors_aux(void)
83 fn = __DTOR_LIST__[n];
84 if (fn == (crt_func)0 || fn == (crt_func)-1)
91 ".pushsection .fini \n"
92 "\t" INIT_CALL_SEQ(__do_global_dtors_aux) "\n"
98 * Handler for gcj. These provide a _Jv_RegisterClasses function and fill
99 * out the .jcr section. We just need to call this function with a pointer
100 * to the appropriate section.
102 extern void _Jv_RegisterClasses(void *) __weak_symbol;
103 static void register_classes(void) __used;
105 static crt_func __JCR_LIST__[] __section(".jcr") __used = { };
107 #ifndef CTORS_CONSTRUCTORS
108 __attribute__((constructor))
111 register_classes(void)
114 if (_Jv_RegisterClasses != NULL && __JCR_LIST__[0] != 0)
115 _Jv_RegisterClasses(__JCR_LIST__);
119 * We can't use constructors when they use the .ctors section as they may be
120 * placed before __CTOR_LIST__.
122 #ifdef CTORS_CONSTRUCTORS
124 ".pushsection .init \n"
125 "\t" INIT_CALL_SEQ(register_classes) "\n"