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      1 /*	$NetBSD: sunos_mod.c,v 1.7 2019/12/12 02:15:42 pgoyette Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2008 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software developed for The NetBSD Foundation
      8  * by Andrew Doran.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: sunos_mod.c,v 1.7 2019/12/12 02:15:42 pgoyette Exp $");
     34 
     35 #include <sys/param.h>
     36 #include <sys/module.h>
     37 #include <sys/exec.h>
     38 #include <sys/exec_aout.h>
     39 #include <sys/signalvar.h>
     40 #include <sys/compat_stub.h>
     41 
     42 #include <machine/sunos_machdep.h>
     43 
     44 #include <compat/sunos/sunos_exec.h>
     45 
     46 MODULE(MODULE_CLASS_EXEC, compat_sunos, "compat_09,compat_util,exec_aout");
     47 
     48 static struct execsw sunos_execsw = {
     49 	.es_hdrsz = SUNOS_AOUT_HDR_SIZE,
     50 	.es_makecmds = exec_sunos_aout_makecmds,
     51 	.u = {
     52 		.elf_probe_func = NULL,
     53 	},
     54 	.es_emul = &emul_sunos,
     55 	.es_prio = EXECSW_PRIO_ANY,
     56 	.es_arglen = 0,
     57 	.es_copyargs = copyargs,
     58 	.es_setregs = NULL,
     59 	.es_coredump = coredump_netbsd,
     60 	.es_setup_stack = exec_setup_stack,
     61 };
     62 
     63 static int
     64 get_sunos_emul(const struct emul **e)
     65 {
     66 
     67 	*e = &emul_sunos;
     68 	return 0;
     69 }
     70 
     71 static int
     72 compat_sunos_modcmd(modcmd_t cmd, void *arg)
     73 {
     74 
     75 	switch (cmd) {
     76 	case MODULE_CMD_INIT:
     77 		MODULE_HOOK_SET(get_emul_sunos_hook, get_sunos_emul);
     78 		return exec_add(&sunos_execsw, 1);
     79 
     80 	case MODULE_CMD_FINI:
     81 		MODULE_HOOK_UNSET(get_emul_sunos_hook);
     82 		return exec_remove(&sunos_execsw, 1);
     83 
     84 	default:
     85 		return ENOTTY;
     86 	}
     87 }
     88