freebsd-dev/lib/libelf/libelf_msize.m4
Joseph Koshy 2dacb27e06 Use <osreldate.h> rather than the OS version reported by the kernel
to determine which Elf Types are to be handled.  Change the M4
templates to wrap an `#if __FreeBSD_version >= NNN'/`#endif' pair
around the generated code for each ELF data type, where `NNN' is
the OS version where the ELF type was added to the source tree.

This change allows cross-builds of old sources on newer FreeBSD
systems to work correctly.

Problem reported by:	ru
2006-12-18 05:40:01 +00:00

108 lines
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/*-
* Copyright (c) 2006 Joseph Koshy
* 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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/types.h>
#include <sys/elf32.h>
#include <sys/elf64.h>
#include <assert.h>
#include <libelf.h>
#include <osreldate.h>
#include <string.h>
#include "_libelf.h"
/* WARNING: GENERATED FROM __file__. */
struct msize {
size_t msz32;
size_t msz64;
};
divert(-1)
include(SRCDIR`/elf_types.m4')
define(BYTE_SIZE, 1)
define(NOTE_SIZE, 1)
/*
* Unimplemented types.
*/
define(MOVEP_SIZE, 0)
define(SXWORD_SIZE32, 0)
define(XWORD_SIZE32, 0)
define(`DEFINE_ELF_MSIZE',
`ifdef($1`_SIZE',
`define($1_SIZE32,$1_SIZE)
define($1_SIZE64,$1_SIZE)',
`ifdef($1`_SIZE32',`',
`define($1_SIZE32,sizeof(Elf32_$2))')
ifdef($1`_SIZE64',`',
`define($1_SIZE64,sizeof(Elf64_$2))')')')
define(`DEFINE_ELF_MSIZES',
`ifelse($#,1,`',
`DEFINE_ELF_MSIZE($1)
DEFINE_ELF_MSIZES(shift($@))')')
DEFINE_ELF_MSIZES(ELF_TYPE_LIST)
define(`MSIZE',
`#if __FreeBSD_version >= $3
[ELF_T_$1] = { .msz32 = $1_SIZE32, .msz64 = $1_SIZE64 },
#endif')
define(`MSIZES',
`ifelse($#,1,`',
`MSIZE($1)
MSIZES(shift($@))')')
divert(0)
static struct msize msize[ELF_T_NUM] = {
MSIZES(ELF_TYPE_LIST)
};
size_t
_libelf_msize(Elf_Type t, int elfclass, unsigned int version)
{
size_t sz;
assert(elfclass == ELFCLASS32 || elfclass == ELFCLASS64);
assert((signed) t >= ELF_T_FIRST && t <= ELF_T_LAST);
if (version != EV_CURRENT) {
LIBELF_SET_ERROR(VERSION, 0);
return (0);
}
sz = (elfclass == ELFCLASS32) ? msize[t].msz32 : msize[t].msz64;
return (sz);
}