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/*-
* Copyright 2000 David E. O'Brien, John D. Polstra.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include "notes.h"
/*
* Special ".note" entry specifying the ABI version. See
* http://www.netbsd.org/Documentation/kernel/elf-notes.html
* for more information.
*
* For all arches except sparc, gcc emits the section directive for the
* following struct with a PROGBITS type. However, newer versions of binutils
* (after 2.16.90) require the section to be of NOTE type, to guarantee that the
* .note.ABI-tag section correctly ends up in the first page of the final
* executable.
*
* Unfortunately, there is no clean way to tell gcc to use another section type,
* so this C file (or the C file that includes it) must be compiled in multiple
* steps:
*
* - Compile the .c file to a .s file.
* - Edit the .s file to change the 'progbits' type to 'note', for the section
* directive that defines the .note.ABI-tag section.
* - Compile the .s file to an object file.
*
* These steps are done in the invididual Makefiles for each applicable arch.
*/
static const struct {
int32_t namesz;
int32_t descsz;
int32_t type;
char name[sizeof(NOTE_FREEBSD_VENDOR)];
int32_t desc;
} abitag __attribute__ ((section (NOTE_SECTION), aligned(4))) __used = {
.namesz = sizeof(NOTE_FREEBSD_VENDOR),
.descsz = sizeof(int32_t),
.type = ABI_NOTETYPE,
.name = NOTE_FREEBSD_VENDOR,
.desc = __FreeBSD_version
};
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