ae7c8a2bb8
when using the egcs and gcc-devel ports, along with GCC built from stock
public FSF sources. With out this change, FreeBSD will be removed from
the list of systems GCC 3.0 must be evaluated on before release. With
the effort some of us put into getting FreeBSD on this list, we should
not turn this effort into a waste, else we might not be worth fighting
for in the future. (note that Alpha and IA-64 versions of crt{i,n}.S
are needed)
* Switch from our own crt{begin,in} to those created from GCC's crtstuff.c.
This will allow us to switch to DWARF2 exceptions in the future, along with
staying in sync with any future GCC requirements.
* Break out our ELF branding bits into a seperate file. Currently this
is now included by our crt1.c files (since this functionality was part of
our native crtbegin.c). Later crtbrand.o will be merged in the creation
of crti.o.
86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
/*-
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* Copyright 1996, 1997, 1998, 2000 John D. Polstra.
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* All rights reserved.
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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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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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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* $FreeBSD$
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*/
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#include <sys/param.h>
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#define ABI_VENDOR "FreeBSD"
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#define ABI_SECTION ".note.ABI-tag"
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#define ABI_NOTETYPE 1
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typedef void (*fptr)(void);
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static fptr ctor_list[1] __attribute__((section(".ctors"))) = { (fptr) -1 };
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static fptr dtor_list[1] __attribute__((section(".dtors"))) = { (fptr) -1 };
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static void
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do_ctors(void)
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{
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fptr *fpp;
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for(fpp = ctor_list + 1; *fpp != 0; ++fpp)
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;
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while(--fpp > ctor_list)
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(**fpp)();
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}
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static void
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do_dtors(void)
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{
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fptr *fpp;
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for(fpp = dtor_list + 1; *fpp != 0; ++fpp)
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(**fpp)();
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}
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/*
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* With very large programs on some architectures (e.g., the Alpha),
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* it is possible to get relocation overflows on the limited
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* displacements of call/bsr instructions. It is particularly likely
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* for the calls from _init() and _fini(), because they are in
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* separate sections. Avoid the problem by forcing indirect calls.
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*/
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static void (*p_do_ctors)(void) = do_ctors;
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static void (*p_do_dtors)(void) = do_dtors;
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extern void _init(void) __attribute__((section(".init")));
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void
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_init(void)
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{
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(*p_do_ctors)();
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}
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extern void _fini(void) __attribute__((section(".fini")));
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void
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_fini(void)
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{
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(*p_do_dtors)();
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}
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#include "crtbegin.c"
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