From 48231afadc40013e6bfda56b04a11ee3a602598f Mon Sep 17 00:00:00 2001
From: rgrimes <rgrimes@FreeBSD.org>
Date: Sat, 12 Jun 1993 14:58:17 +0000
Subject: [PATCH] Initial import, 0.1 + pk 0.2.4-B1

---
 lib/csu/i386/Makefile |  33 +++++++++++++
 lib/csu/i386/crt0.c   | 108 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 141 insertions(+)
 create mode 100644 lib/csu/i386/Makefile
 create mode 100644 lib/csu/i386/crt0.c

diff --git a/lib/csu/i386/Makefile b/lib/csu/i386/Makefile
new file mode 100644
index 00000000000..bb1c66e8ed1
--- /dev/null
+++ b/lib/csu/i386/Makefile
@@ -0,0 +1,33 @@
+#	@(#)Makefile	5.6 (Berkeley) 5/22/91
+
+CFLAGS=	-O -DLIBC_SCCS
+OBJS=	crt0.o gcrt0.o
+CLEANFILES+=	gmon.o moncrt0.o core a.out
+
+all: ${OBJS}
+
+crt0.o: crt0.c
+	${CC} ${CFLAGS} -c -DCRT0 ${.ALLSRC}
+	${LD} -x -r ${.TARGET}
+	mv a.out ${.TARGET}
+
+moncrt0.o: crt0.c
+	${CC} ${CFLAGS} -c -DMCRT0 ${.ALLSRC} -o ${.TARGET}
+	${LD} -x -r ${.TARGET}
+	mv a.out ${.TARGET}
+
+gcrt0.o: moncrt0.o gmon.o
+	${LD} -x -r -o ${.TARGET} moncrt0.o gmon.o
+
+gmon.o: gmon.c gmon.h
+	${CC} -c ${DEFS} ${.IMPSRC}
+	${LD} -x -r ${.TARGET}
+	mv a.out ${.TARGET}
+
+install:
+	install -o ${BINOWN} -g ${BINGRP} -m 444 ${OBJS} \
+	    ${DESTDIR}/usr/lib
+
+depend lint tags:
+
+.include <bsd.prog.mk>
diff --git a/lib/csu/i386/crt0.c b/lib/csu/i386/crt0.c
new file mode 100644
index 00000000000..363098b326c
--- /dev/null
+++ b/lib/csu/i386/crt0.c
@@ -0,0 +1,108 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * 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 the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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[] = "@(#)crt0.c	5.7 (Berkeley) 7/3/91";
+#endif /* LIBC_SCCS and not lint */
+
+
+/*
+ *	C start up routine.
+ *	Robert Henry, UCB, 20 Oct 81
+ *
+ *	We make the following (true) assumption:
+ *	1) The only register variable that we can trust is the frame pointer,
+ *	ebp, which points to the base of the kernel calling frame.
+ */
+
+char	**environ = (char **)0;
+int	errno = 0;
+
+asm(".text");
+asm(".long 0xc000c000");
+
+extern	unsigned char	etext;
+extern	unsigned char	eprol asm ("eprol");
+extern			start() asm("start");
+extern			mcount() asm ("mcount");
+
+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 **targv;
+	register char **argv;
+	extern void _mcleanup();
+
+#ifdef lint
+	kfp = 0;
+	initcode = initcode = 0;
+#else not lint
+	/* just above the saved frame pointer */
+	asm ("lea 4(%%ebp), %0" : "=r" (kfp) );
+#endif not lint
+	for (argv = targv = &kfp->kargv[0]; *targv++; /* void */)
+		/* void */ ;
+	if (targv >= (char **)(*argv))
+		--targv;
+	environ = targv;
+asm("eprol:");
+
+#ifdef MCRT0
+	atexit(_mcleanup);
+	monstartup(&eprol, &etext);
+#endif MCRT0
+	exit(main(kfp->kargc, argv, environ));
+}
+
+#ifdef CRT0
+/*
+ * null mcount and moncontrol,
+ * just in case some routine is compiled for profiling
+ */
+moncontrol(val)
+	int val;
+{
+
+}
+
+mcount() { }
+#endif CRT0
-- 
2.45.2