New version of crt0 scrt0 gcrt0 to support ELF shared libs.

It is very likely that this code will be replaced later. :-)

2 files changed, 118 insertions, 11 deletions

diff --git a/lib/csu/mips/Makefile b/lib/csu/mips/Makefile
index 612d3b77190..e773cbc0cec 100644
--- a/lib/csu/mips/Makefile
+++ b/lib/csu/mips/Makefile
@@ -1,21 +1,32 @@
 #	from: @(#)Makefile	8.1 (Berkeley) 6/1/93
-#	$Id: Makefile,v 1.2 1995/12/15 01:45:59 deraadt Exp $
+#	$Id: Makefile,v 1.3 1996/05/19 20:34:32 pefo Exp $
 
-CFLAGS+=	-DLIBC_SCCS
-OBJS=		crt0.o gcrt0.o
+CFLAGS+=	-DLIBC_SCCS -I${.CURDIR}
+OBJS=		crt0.o gcrt0.o scrt0.o
 CLEANFILES+=	core a.out
+SRCS=		crt0.c
+DEPS=
+CC=		gcc
 
 all: ${OBJS}
 
-crt0.o: crt0.S
-	${COMPILE.S} -DCRT0 ${.ALLSRC}
-	${LD} -x -r ${.TARGET}
-	mv a.out ${.TARGET}
+crt0.o: ${SRCS} ${DEPS}
+	@echo "${COMPILE.c} -DCRT0 -DDYNAMIC ${.CURDIR}/${SRCS} -o ${.TARGET}"
+	@${COMPILE.c} -G0 -mabicalls -fPIC -DCRT0 -DDYNAMIC ${.CURDIR}/${SRCS} -o ${.TARGET}.o
+	@${LD} -x -r ${.TARGET}.o -o ${.TARGET}
+	@rm -f ${.TARGET}.o
 
-gcrt0.o: crt0.S
-	${COMPILE.S} -DMCRT0 ${.ALLSRC} -o ${.TARGET}
-	${LD} -x -r ${.TARGET}
-	mv a.out ${.TARGET}
+gcrt0.o: ${SRCS} ${DEPS}
+	@echo "${COMPILE.c} -DMCRT0 ${.CURDIR}/${SRCS} -o ${.TARGET}"
+	@${COMPILE.c} -DMCRT0 ${.CURDIR}/${SRCS} -o ${.TARGET}.o
+	@${LD} -x -r ${.TARGET}.o -o ${.TARGET}
+	@rm -f ${.TARGET}.o
+
+scrt0.o: ${SRCS} ${DEPS}
+	@echo "${COMPILE.c} -DSCRT0 ${.CURDIR}/${SRCS} -o ${.TARGET}"
+	@${COMPILE.c} -DSCRT0 ${.CURDIR}/${SRCS} -o ${.TARGET}.o
+	@${LD} -x -r ${.TARGET}.o -o ${.TARGET}
+	@rm -f ${.TARGET}.o
 
 install:
 	install ${COPY} -o ${BINOWN} -g ${BINGRP} -m 444 ${OBJS} \
diff --git a/lib/csu/mips/crt0.c b/lib/csu/mips/crt0.c
new file mode 100644
index 00000000000..e282b481daa
--- /dev/null
+++ b/lib/csu/mips/crt0.c
@@ -0,0 +1,96 @@
+/*	$NetBSD: crt0.c,v 1.7 1995/06/03 13:16:15 pk 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[] = "@(#)crt0.c	5.7 (Berkeley) 7/3/91"; */
+static char rcsid[] = "$Id: crt0.c,v 1.1 1996/05/19 20:34:32 pefo Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+extern void	start __P((long)) asm("start");
+extern void     _mcleanup __P((void));
+extern unsigned char    eprol asm ("eprol");
+extern unsigned char    etext;
+
+char                    **environ;
+static char		empty[1];
+char			*__progname = empty;
+
+void
+__start()
+{
+	struct kframe {
+		int	kargc;
+		char	*kargv[1];	/* size depends on kargc */
+		char	kargstr[1];	/* size varies */
+		char	kenvstr[1];	/* size varies */
+	};
+
+	register struct kframe *kfp;
+	register char **argv, *ap;
+
+#ifndef DYNAMIC
+	asm("	la	$28,_gp");
+	asm("	addiu	%0,$29,32" : "=r" (kfp));
+#else
+	asm("	addiu	%0,$29,48" : "=r" (kfp));
+#endif
+	/* just above the saved frame pointer
+	kfp = (struct kframe *) (&param-1);*/
+	argv = &kfp->kargv[0];
+	environ = argv + kfp->kargc + 1;
+
+	if (ap = argv[0])
+		if ((__progname = strrchr(ap, '/')) == NULL)
+			__progname = ap;
+		else
+			++__progname;
+
+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 MCRT0
+asm ("	.text");
+asm ("_eprol:");
+#endif