initial import of NetBSD tree

1 files changed, 112 insertions, 0 deletions

diff --git a/sys/compat/freebsd/freebsd_exec.c b/sys/compat/freebsd/freebsd_exec.c
new file mode 100644
index 00000000000..1d7f27d26b5
--- /dev/null
+++ b/sys/compat/freebsd/freebsd_exec.c
@@ -0,0 +1,112 @@
+/*	$NetBSD: freebsd_exec.c,v 1.1 1995/10/10 01:19:27 mycroft Exp $	*/
+
+/*
+ * Copyright (c) 1993, 1994 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.
+ * 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/param.h>
+#include <sys/systm.h>
+#include <sys/proc.h>
+#include <sys/malloc.h>
+#include <sys/vnode.h>
+#include <sys/exec.h>
+#include <sys/resourcevar.h>
+#include <vm/vm.h>
+
+#include <machine/freebsd_machdep.h>
+
+#include <compat/freebsd/freebsd_syscall.h>
+#include <compat/freebsd/freebsd_exec.h>
+
+extern struct sysent freebsd_sysent[];
+extern char *freebsd_syscallnames[];
+
+struct emul emul_freebsd = {
+	"freebsd",
+	NULL,
+	freebsd_sendsig,
+	FREEBSD_SYS_syscall,
+	FREEBSD_SYS_MAXSYSCALL,
+	freebsd_sysent,
+	freebsd_syscallnames,
+	0,
+	copyargs,
+	setregs,
+	freebsd_sigcode,
+	freebsd_esigcode,
+};
+
+/*
+ * exec_aout_makecmds(): Check if it's an a.out-format executable.
+ *
+ * Given a proc pointer and an exec package pointer, see if the referent
+ * of the epp is in a.out format.  First check 'standard' magic numbers for
+ * this architecture.  If that fails, try a cpu-dependent hook.
+ *
+ * This function, in the former case, or the hook, in the latter, is
+ * responsible for creating a set of vmcmds which can be used to build
+ * the process's vm space and inserting them into the exec package.
+ */
+
+int
+exec_freebsd_aout_makecmds(p, epp)
+	struct proc *p;
+	struct exec_package *epp;
+{
+	u_long midmag;
+	int error = ENOEXEC;
+	struct exec *execp = epp->ep_hdr;
+
+	if (epp->ep_hdrvalid < sizeof(struct exec))
+		return ENOEXEC;
+
+	midmag = FREEBSD_N_GETMID(*execp) << 16 | FREEBSD_N_GETMAGIC(*execp);
+
+	/* assume FreeBSD's MID_MACHINE and [ZQNO]MAGIC is same as NetBSD's */
+	switch (midmag) {
+	case (MID_MACHINE << 16) | ZMAGIC:
+		error = cpu_exec_aout_prep_oldzmagic(p, epp);
+		break;
+	case (MID_MACHINE << 16) | QMAGIC:
+		error = exec_aout_prep_zmagic(p, epp);
+		break;
+	case (MID_MACHINE << 16) | NMAGIC:
+		error = exec_aout_prep_nmagic(p, epp);
+		break;
+	case (MID_MACHINE << 16) | OMAGIC:
+		error = exec_aout_prep_omagic(p, epp);
+		break;
+	}
+	if (error == 0)
+		epp->ep_emul = &emul_freebsd;
+	else
+		kill_vmcmds(&epp->ep_vmcmds);
+
+	return error;
+}