ecad1d050c
This is more consistent with the names used for .ctor and .dtor symbols and better reflects __JCR_END__'s role. Reviewed by: andrew Obtained from: CheriBSD MFC after: 2 weeks Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D27125
70 lines
1.9 KiB
C
70 lines
1.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-1-Clause
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*
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* Copyright 2018 Andrew Turner
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "crt.h"
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typedef void (*crt_func)(void);
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static crt_func __JCR_END__[] __section(".jcr") __used = {
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(crt_func)0
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};
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#ifdef HAVE_CTORS
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/*
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* On some architectures and toolchains we may need to call the .ctors.
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* These are called in the reverse order they are in the ELF file.
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*/
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static void __do_global_ctors_aux(void) __used;
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static crt_func __CTOR_END__[] __section(".ctors") __used = {
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(crt_func)0
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};
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static crt_func __DTOR_END__[] __section(".dtors") __used = {
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(crt_func)0
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};
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static void
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__do_global_ctors_aux(void)
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{
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crt_func fn;
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int n;
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for (n = 1;; n++) {
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fn = __CTOR_END__[-n];
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if (fn == (crt_func)0 || fn == (crt_func)-1)
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break;
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fn();
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}
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}
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asm (
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".pushsection .init \n"
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"\t" INIT_CALL_SEQ(__do_global_ctors_aux) "\n"
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".popsection \n"
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);
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#endif
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