Import of original NetBSD's ibcs2 emulator sources by Scott Bartram,

which is used as a basis for a more complete and cleaner ibcs2 emulator.
(snapshot about May 1995 with a few files from September 1995)

Some files and code from old emulator still remains.
New files, features, and changes have been implemented by myself,
which will be shown in following commits.

1 files changed, 105 insertions, 0 deletions

diff --git a/sys/i386/ibcs2/ibcs2_signal.h b/sys/i386/ibcs2/ibcs2_signal.h
new file mode 100644
index 0000000..2858688
--- /dev/null
+++ b/sys/i386/ibcs2/ibcs2_signal.h
@@ -0,0 +1,105 @@
+/*	$NetBSD: ibcs2_signal.h,v 1.7 1995/08/14 02:26:01 mycroft Exp $	*/
+
+/*
+ * Copyright (c) 1994, 1995 Scott Bartram
+ * 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 Scott Bartram.
+ * 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.
+ */
+
+#ifndef	_IBCS2_SIGNAL_H
+#define	_IBCS2_SIGNAL_H
+
+#define IBCS2_SIGHUP		1
+#define IBCS2_SIGINT		2
+#define IBCS2_SIGQUIT		3
+#define IBCS2_SIGILL		4
+#define IBCS2_SIGTRAP		5
+#define IBCS2_SIGIOT		6
+#define IBCS2_SIGABRT		6
+#define IBCS2_SIGEMT		7
+#define IBCS2_SIGFPE		8
+#define IBCS2_SIGKILL		9
+#define IBCS2_SIGBUS		10
+#define IBCS2_SIGSEGV		11
+#define IBCS2_SIGSYS		12
+#define IBCS2_SIGPIPE		13
+#define IBCS2_SIGALRM		14
+#define IBCS2_SIGTERM		15
+#define IBCS2_SIGUSR1		16
+#define IBCS2_SIGUSR2		17
+#define IBCS2_SIGCLD		18
+#define IBCS2_SIGPWR		19
+#define IBCS2_SIGWINCH		20
+#define IBCS2_SIGPOLL		22
+#define IBCS2_NSIG		32
+
+/*
+ * SCO-specific
+ */
+#define IBCS2_SIGSTOP		23
+#define IBCS2_SIGTSTP		24
+#define IBCS2_SIGCONT		25
+#define IBCS2_SIGTTIN		26
+#define IBCS2_SIGTTOU		27
+#define IBCS2_SIGVTALRM		28
+#define IBCS2_SIGPROF		29
+
+#define IBCS2_SIGNO_MASK	0x00FF
+#define IBCS2_SIGNAL_MASK	0x0000
+#define IBCS2_SIGSET_MASK	0x0100
+#define IBCS2_SIGHOLD_MASK	0x0200
+#define IBCS2_SIGRELSE_MASK	0x0400
+#define IBCS2_SIGIGNORE_MASK	0x0800
+#define IBCS2_SIGPAUSE_MASK	0x1000
+
+#define IBCS2_SIGNO(x)		((x) & IBCS2_SIGNO_MASK)
+#define IBCS2_SIGCALL(x)	((x) & ~IBCS2_SIGNO_MASK)
+
+#define IBCS2_SIG_DFL		(void(*)())0
+#define IBCS2_SIG_ERR		(void(*)())-1
+#define IBCS2_SIG_IGN		(void(*)())1
+#define IBCS2_SIG_HOLD		(void(*)())2
+
+#define IBCS2_SIG_SETMASK	0
+#define IBCS2_SIG_BLOCK		1
+#define IBCS2_SIG_UNBLOCK	2
+
+typedef long	ibcs2_sigset_t;
+typedef void	(*ibcs2_sig_t) __P((int));
+
+struct ibcs2_sigaction {
+	ibcs2_sig_t	sa_handler;
+	ibcs2_sigset_t	sa_mask;
+	int		sa_flags;
+};
+
+/* sa_flags */
+#define IBCS2_SA_NOCLDSTOP	1
+
+extern int bsd_to_ibcs2_sig[];
+
+#endif /* _IBCS2_SIGNAL_H */