120 lines
3.7 KiB
C
120 lines
3.7 KiB
C
/* $NetBSD: exec_elf32.c,v 1.143 2019/11/20 19:37:53 pgoyette Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1996 Christopher G. Demetriou
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Christopher G. Demetriou
|
|
* for the NetBSD Project.
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission
|
|
*
|
|
* 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>
|
|
__KERNEL_RCSID(0, "$NetBSD: exec_elf32.c,v 1.143 2019/11/20 19:37:53 pgoyette Exp $");
|
|
|
|
#define ELFSIZE 32
|
|
|
|
#include "exec_elf.c"
|
|
|
|
#include <sys/module.h>
|
|
|
|
#define ELF32_AUXSIZE (ELF_AUX_ENTRIES * sizeof(Aux32Info) \
|
|
+ MAXPATHLEN + ALIGN(1))
|
|
|
|
MODULE(MODULE_CLASS_EXEC, exec_elf32, NULL);
|
|
|
|
static struct execsw exec_elf32_execsw[] = {
|
|
{
|
|
.es_hdrsz = sizeof (Elf32_Ehdr),
|
|
.es_makecmds = exec_elf32_makecmds,
|
|
.u = {
|
|
.elf_probe_func = netbsd_elf32_probe,
|
|
},
|
|
.es_emul = &emul_netbsd,
|
|
.es_prio = EXECSW_PRIO_FIRST,
|
|
.es_arglen = ELF32_AUXSIZE,
|
|
.es_copyargs = elf32_copyargs,
|
|
.es_setregs = NULL,
|
|
.es_coredump = coredump_elf32,
|
|
.es_setup_stack = exec_setup_stack,
|
|
},
|
|
#if EXEC_ELF_NOTELESS
|
|
{
|
|
.es_hdrsz = sizeof (Elf32_Ehdr),
|
|
.es_makecmds = exec_elf32_makecmds,
|
|
.u {
|
|
elf_probe_func = NULL,
|
|
},
|
|
.es_emul = &emul_netbsd,
|
|
.es_prio = EXECSW_PRIO_LAST,
|
|
.es_arglen = ELF32_AUXSIZE,
|
|
.es_copyargs = elf32_copyargs,
|
|
.es_setregs = NULL,
|
|
.es_coredump = coredump_elf32,
|
|
.es_setup_stack = exec_setup_stack,
|
|
},
|
|
#endif
|
|
};
|
|
|
|
static int
|
|
exec_elf32_modcmd(modcmd_t cmd, void *arg)
|
|
{
|
|
#if ARCH_ELFSIZE == 64
|
|
/*
|
|
* If we are on a 64bit system, we don't want the 32bit execsw[] to be
|
|
* added in the global array, because the exec_elf32 module only works
|
|
* on 32bit systems.
|
|
*
|
|
* However, we need the exec_elf32 module, because it will make the 32bit
|
|
* functions available for netbsd32 and linux32.
|
|
*
|
|
* Therefore, allow this module on 64bit systems, but make it dormant.
|
|
*/
|
|
|
|
(void)exec_elf32_execsw; /* unused */
|
|
|
|
switch (cmd) {
|
|
case MODULE_CMD_INIT:
|
|
case MODULE_CMD_FINI:
|
|
return 0;
|
|
default:
|
|
return ENOTTY;
|
|
}
|
|
#else /* ARCH_ELFSIZE == 64 */
|
|
switch (cmd) {
|
|
case MODULE_CMD_INIT:
|
|
return exec_add(exec_elf32_execsw,
|
|
__arraycount(exec_elf32_execsw));
|
|
|
|
case MODULE_CMD_FINI:
|
|
return exec_remove(exec_elf32_execsw,
|
|
__arraycount(exec_elf32_execsw));
|
|
|
|
default:
|
|
return ENOTTY;
|
|
}
|
|
#endif /* ARCH_ELFSIZE == 64 */
|
|
}
|