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4e1bac76a8
"value computed is not used" warning. * Makeconfig (+gccwarn): Removed -Wconversion. * csu/initfini.c (GLOBAL): Macro removed. (_init, _fini): Always define globally. * csu/Makefile (crtstuff, initfini): Don't make crt[in]_s.o.
88 lines
3.3 KiB
C
88 lines
3.3 KiB
C
/* Special .init and .fini section support.
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Copyright (C) 1995 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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/* This file is compiled into assembly code which is then surrounded by the
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lines `cat > crtcommon.tmp <<\EOF_common' and `EOF_common' and thus
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becomes a shell script which creates three files of assembly code.
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* The first file is crti.s-new; this puts a function prologue at the
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beginning of the .init and .fini sections and defines global symbols for
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those addresses, so they can be called as functions.
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* The second file is crtn.s-new; this puts the corresponding function
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epilogues in the .init and .fini sections.
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* The third file is crtcommon.tmp, which is whatever miscellaneous cruft
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the compiler generated at the end; it should be appended to both crti.s-new
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and crtn.s-new. */
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#include <stdlib.h>
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/* These declarations make the functions go in the right sections when
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we define them below. GCC syntax does not allow the attribute
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specifications to be in the function definitions themselves. */
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void _init (void) __attribute__ ((section (".init")));
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void _fini (void) __attribute__ ((section (".fini")));
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/* End the here document containing the initial common code.
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Then move the output file crtcommon.tmp to crti.s-new and crtn.s-new. */
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asm ("\nEOF_common\n\
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mv -f crtcommon.tmp crti.s-new\n\
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cp -f crti.s-new crtn.s-new");
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/* Append the .init prologue to crti.s-new. */
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asm ("cat >> crti.s-new <<\\EOF.crti.init");
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void
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_init (void)
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{
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(void) &_init; /* Don't optimize out the function! */
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/* End the here document containing the .init prologue code.
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Then fetch the .section directive just written and append that
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to crtn.s-new, followed by the function epilogue. */
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asm ("\nEOF.crti.init
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\n\
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fgrep .init crti.s-new >>crtn.s-new\n\
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cat >> crtn.s-new <<\\EOF.crtn.init");
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}
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/* End the here document containing the .init epilogue code.
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Then append the .fini prologue to crti.s-new. */
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asm ("\nEOF.crtn.init\
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\n\
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cat >> crti.s-new <<\\EOF.crti.fini");
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void
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_fini (void)
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{
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(void) &_fini; /* Don't optimize out the function! */
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/* End the here document containing the .fini prologue code.
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Then fetch the .section directive just written and append that
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to crtn.s-new, followed by the function epilogue. */
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asm ("\nEOF.crti.fini\
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\n\
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fgrep .fini crti.s-new >>crtn.s-new\n\
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cat >> crtn.s-new <<\\EOF.crtn.fini");
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}
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/* End the here document containing the .fini epilogue code.
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Finally, put the remainder of the generated assembly into crtcommon.tmp. */
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asm ("\nEOF.crtn.fini\
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\n\
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cat > crtcommon.tmp <<\\EOF_common");
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