8a031a1d1e
module hook, we can share a common set of synchronization structures. This cuts the amount of cacheline_aligned data for these structures by 50%. Note that we still have a per-hook localcount, since we need to count individual references. As discussed with riastradh@ Welcome to 9.99.22 !
88 lines
2.7 KiB
C
88 lines
2.7 KiB
C
/* $NetBSD: sunos_mod.c,v 1.7 2019/12/12 02:15:42 pgoyette Exp $ */
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/*-
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* Copyright (c) 2008 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software developed for The NetBSD Foundation
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* by Andrew Doran.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: sunos_mod.c,v 1.7 2019/12/12 02:15:42 pgoyette Exp $");
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#include <sys/param.h>
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#include <sys/module.h>
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#include <sys/exec.h>
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#include <sys/exec_aout.h>
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#include <sys/signalvar.h>
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#include <sys/compat_stub.h>
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#include <machine/sunos_machdep.h>
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#include <compat/sunos/sunos_exec.h>
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MODULE(MODULE_CLASS_EXEC, compat_sunos, "compat_09,compat_util,exec_aout");
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static struct execsw sunos_execsw = {
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.es_hdrsz = SUNOS_AOUT_HDR_SIZE,
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.es_makecmds = exec_sunos_aout_makecmds,
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.u = {
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.elf_probe_func = NULL,
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},
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.es_emul = &emul_sunos,
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.es_prio = EXECSW_PRIO_ANY,
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.es_arglen = 0,
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.es_copyargs = copyargs,
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.es_setregs = NULL,
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.es_coredump = coredump_netbsd,
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.es_setup_stack = exec_setup_stack,
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};
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static int
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get_sunos_emul(const struct emul **e)
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{
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*e = &emul_sunos;
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return 0;
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}
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static int
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compat_sunos_modcmd(modcmd_t cmd, void *arg)
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{
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switch (cmd) {
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case MODULE_CMD_INIT:
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MODULE_HOOK_SET(get_emul_sunos_hook, get_sunos_emul);
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return exec_add(&sunos_execsw, 1);
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case MODULE_CMD_FINI:
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MODULE_HOOK_UNSET(get_emul_sunos_hook);
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return exec_remove(&sunos_execsw, 1);
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default:
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return ENOTTY;
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}
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}
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