vax c runtime support

2 files changed, 146 insertions, 0 deletions

diff --git a/lib/csu/vax/Makefile b/lib/csu/vax/Makefile
new file mode 100644
index 00000000000..a107a7b6b45
--- /dev/null
+++ b/lib/csu/vax/Makefile
@@ -0,0 +1,31 @@
+#	from: @(#)Makefile	5.6 (Berkeley) 5/22/91
+#	$Id: Makefile,v 1.1 1995/11/01 17:38:00 deraadt Exp $
+
+CFLAGS+=	-DLIBC_SCCS -I${.CURDIR}/..
+OBJS=		crt0.o gcrt0.o scrt0.o
+CLEANFILES+=	core a.out
+
+all: ${OBJS}
+
+crt0.o: crt0.c
+	${COMPILE.c} -DCRT0 -UDYNAMIC ${.ALLSRC}
+	${LD} -x -r ${.TARGET}
+	mv a.out ${.TARGET}
+
+gcrt0.o: crt0.c
+	${COMPILE.c} -DMCRT0 ${.ALLSRC} -o ${.TARGET}
+	${LD} -x -r ${.TARGET}
+	mv a.out ${.TARGET}
+
+scrt0.o: crt0.c
+	${COMPILE.c} -DSCRT0 ${.ALLSRC} -o ${.TARGET}
+	${LD} -x -r ${.TARGET}
+	mv a.out ${.TARGET}
+
+install:
+	install ${COPY} -o ${BINOWN} -g ${BINGRP} -m 444 ${OBJS} \
+	    ${DESTDIR}/usr/lib
+
+depend lint tags:
+
+.include <bsd.prog.mk>
diff --git a/lib/csu/vax/crt0.c b/lib/csu/vax/crt0.c
new file mode 100644
index 00000000000..5c53d6b94e9
--- /dev/null
+++ b/lib/csu/vax/crt0.c
@@ -0,0 +1,115 @@
+/*	$NetBSD: crt0.c,v 1.1.2.1 1995/10/15 19:40:04 ragge Exp $	*/
+/*
+ * Copyright (c) 1993 Paul Kranenburg
+ * 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 Paul Kranenburg.
+ * 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.
+ *
+ */
+
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "%W% (Erasmus) %G%";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <stdlib.h>
+
+#include "common.h"
+
+extern void	start __P((void)) asm("start");
+
+void
+start()
+{
+	struct kframe {
+		int	kargc;
+		char	*kargv[1];	/* size depends on kargc */
+		char	kargstr[1];	/* size varies */
+		char	kenvstr[1];	/* size varies */
+	};
+	/*
+	 *	ALL REGISTER VARIABLES!!!
+	 */
+	register struct kframe *kfp;
+	register char **argv, *ap;
+
+#ifdef lint
+	kfp = 0;
+	initcode = initcode = 0;
+#else /* not lint */
+	/* make kfp point to the arguments on stack */
+	asm ("movl sp, %0" : "=r" (kfp));
+#endif /* not lint */
+	argv = &kfp->kargv[0];
+	environ = argv + kfp->kargc + 1;
+
+	if (ap = argv[0])
+		if ((__progname = _strrchr(ap, '/')) == NULL)
+			__progname = ap;
+		else
+			++__progname;
+
+#ifdef DYNAMIC
+	/* ld(1) convention: if DYNAMIC = 0 then statically linked */
+#ifdef stupid_gcc
+	if (&_DYNAMIC)
+#else
+	if ( ({volatile caddr_t x = (caddr_t)&_DYNAMIC; x; }) )
+#endif
+		__load_rtld(&_DYNAMIC);
+#endif /* DYNAMIC */
+
+asm("eprol:");
+
+#ifdef MCRT0
+	atexit(_mcleanup);
+	monstartup((u_long)&eprol, (u_long)&etext);
+#endif MCRT0
+
+asm ("__callmain:");		/* Defined for the benefit of debuggers */
+	exit(main(kfp->kargc, argv, environ));
+}
+
+#ifdef DYNAMIC
+	asm("	___syscall:");
+	asm("		.word 0");		/* no registers to save */
+	asm("		movl 4(ap), r0");	/* get syscall number */
+	asm("		subl3 $1,(ap)+,(ap)");	/* n-1 args to syscall */
+	asm("		chmk r0");		/* do system call */
+	asm("		jcs 1f");		/* check error */
+	asm("		ret");			/* return */
+	asm("	1:	movl $-1, r0");
+	asm("		ret");
+
+#endif /* DYNAMIC */
+
+#include "common.c"
+
+#ifdef MCRT0
+asm ("	.text");
+asm ("_eprol:");
+#endif