113 lines
3.6 KiB
C
113 lines
3.6 KiB
C
/* $NetBSD: freebsd_exec.c,v 1.3 1998/01/24 12:33:15 mycroft Exp $ */
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/*
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* Copyright (c) 1993, 1994 Christopher G. Demetriou
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* All rights reserved.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christopher G. Demetriou.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/proc.h>
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#include <sys/malloc.h>
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#include <sys/vnode.h>
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#include <sys/exec.h>
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#include <sys/resourcevar.h>
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#include <vm/vm.h>
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#include <machine/freebsd_machdep.h>
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#include <compat/freebsd/freebsd_syscall.h>
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#include <compat/freebsd/freebsd_exec.h>
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extern struct sysent freebsd_sysent[];
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extern char *freebsd_syscallnames[];
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struct emul emul_freebsd = {
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"freebsd",
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NULL,
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freebsd_sendsig,
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FREEBSD_SYS_syscall,
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FREEBSD_SYS_MAXSYSCALL,
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freebsd_sysent,
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freebsd_syscallnames,
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0,
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copyargs,
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freebsd_setregs,
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freebsd_sigcode,
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freebsd_esigcode,
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};
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/*
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* exec_aout_makecmds(): Check if it's an a.out-format executable.
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*
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* Given a proc pointer and an exec package pointer, see if the referent
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* of the epp is in a.out format. First check 'standard' magic numbers for
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* this architecture. If that fails, try a cpu-dependent hook.
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*
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* This function, in the former case, or the hook, in the latter, is
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* responsible for creating a set of vmcmds which can be used to build
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* the process's vm space and inserting them into the exec package.
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*/
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int
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exec_freebsd_aout_makecmds(p, epp)
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struct proc *p;
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struct exec_package *epp;
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{
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u_long midmag;
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int error = ENOEXEC;
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struct exec *execp = epp->ep_hdr;
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if (epp->ep_hdrvalid < sizeof(struct exec))
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return ENOEXEC;
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midmag = FREEBSD_N_GETMID(*execp) << 16 | FREEBSD_N_GETMAGIC(*execp);
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/* assume FreeBSD's MID_MACHINE and [ZQNO]MAGIC is same as NetBSD's */
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switch (midmag) {
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case (MID_MACHINE << 16) | ZMAGIC:
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error = exec_aout_prep_oldzmagic(p, epp);
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break;
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case (MID_MACHINE << 16) | QMAGIC:
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error = exec_aout_prep_zmagic(p, epp);
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break;
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case (MID_MACHINE << 16) | NMAGIC:
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error = exec_aout_prep_nmagic(p, epp);
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break;
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case (MID_MACHINE << 16) | OMAGIC:
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error = exec_aout_prep_omagic(p, epp);
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break;
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}
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if (error == 0)
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epp->ep_emul = &emul_freebsd;
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else
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kill_vmcmds(&epp->ep_vmcmds);
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return error;
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}
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