Bring C runtime bits for FreeBSD/mips from p4 mips2-jnpr branch.

Approved by:	cognet (mentor)

lib/csu/mips/Makefile

@@ -0,0 +1,23 @@
+# $FreeBSD$
+
+.PATH: ${.CURDIR}/../common
+
+SRCS=		crt1.c crti.S crtn.S
+OBJS=		${SRCS:N*.h:R:S/$/.o/g}
+OBJS+=		gcrt1.o
+CFLAGS+=	-Wall -Wno-unused \
+		-I${.CURDIR}/../common \
+		-I${.CURDIR}/../../libc/include
+
+all: ${OBJS}
+
+CLEANFILES=	${OBJS}
+
+gcrt1.o: crt1.c
+	${CC} ${CFLAGS} -DGCRT -c -o gcrt1.o ${.ALLSRC}
+
+realinstall:
+	${INSTALL} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
+	    ${OBJS} ${DESTDIR}${LIBDIR}
+
+.include <bsd.lib.mk>

lib/csu/mips/crt1.c

@@ -0,0 +1,116 @@
+/*-
+ * Copyright 1996-1998 John D. Polstra.
+ * All rights reserved.
+ * Copyright (c) 1995 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
+ *    for the NetBSD Project.
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#ifndef __GNUC__
+#error "GCC is needed to compile this file"
+#endif
+
+#include <stdlib.h>
+#include "libc_private.h"
+#include "crtbrand.c"
+
+struct Struct_Obj_Entry;
+struct ps_strings;
+
+#ifndef NOSHARED
+extern int _DYNAMIC;
+#pragma weak _DYNAMIC
+#endif
+
+extern void _init(void);
+extern void _fini(void);
+extern int main(int, char **, char **);
+
+#ifdef GCRT
+extern void _mcleanup(void);
+extern void monstartup(void *, void *);
+extern int eprol;
+extern int etext;
+#endif
+
+char **environ;
+const char *__progname = "";
+
+void __gccmain(void) {}
+void __main(void) {}
+
+/* The entry function. */
+void
+__start(char **ap,
+	void (*cleanup)(void),			/* from shared loader */
+	struct Struct_Obj_Entry *obj,		/* from shared loader */
+	struct ps_strings *ps_strings)
+{
+	int argc;
+	char **argv;
+	char **env;
+
+	argc = * (long *) ap;
+	argv = ap + 1;
+	env  = ap + 2 + argc;
+	environ = env;
+	if(argc > 0 && argv[0] != NULL) {
+		const char *s;
+		__progname = argv[0];
+		for (s = __progname; *s != '\0'; s++)
+			if (*s == '/')
+				__progname = s + 1;
+	}
+
+#ifndef NOSHARED
+	if (&_DYNAMIC != NULL)
+		atexit(cleanup);
+#endif
+#ifdef GCRT
+	atexit(_mcleanup);
+#endif
+	atexit(_fini);
+#ifdef GCRT
+	monstartup(&eprol, &etext);
+#endif
+#ifndef NOGPREL
+	_init();
+#endif
+	exit( main(argc, argv, env) );
+}
+
+#ifdef GCRT
+__asm__(".text");
+__asm__("eprol:");
+__asm__(".previous");
+#endif

lib/csu/mips/crti.S

@@ -0,0 +1,37 @@
+#include <machine/asm.h>
+__FBSDID("$FreeBSD$");
+
+	.section .init,"ax",%progbits
+	.align 4
+	.globl	_init
+	.type	_init,%function
+_init:
+#ifdef __ABICALLS__
+	.set   noreorder
+	.cpload $25
+	.set   reorder
+	subu	sp, sp, 32
+	.cprestore 16
+	sw	ra, 28(sp)
+
+#else
+	subu	sp, sp, 32
+	sw	ra, 28(sp)
+#endif
+
+	.section .fini,"ax",%progbits
+	.align 4
+	.globl	_fini
+	.type	_fini,%function
+_fini:
+#ifdef __ABICALLS__
+	.set   noreorder
+	.cpload $25
+	.set   reorder
+	subu	sp, sp, 32
+	.cprestore 16
+	sw	ra, 28(sp)
+#else
+	subu    sp, sp, 32
+	sw	ra, 28(sp)
+#endif

lib/csu/mips/crtn.S

@@ -0,0 +1,15 @@
+#include <machine/asm.h>
+__FBSDID("$FreeBSD$");
+	.section .init,"ax",%progbits
+	lw	ra, 28(sp)
+	.set	noreorder
+	j	ra
+	addu	sp, sp, 32
+	.set	reorder
+
+	.section .fini,"ax",%progbits
+	lw	ra, 28(sp)
+	.set	noreorder
+	j	ra
+	addu	sp, sp, 32
+	.set	reorder