C runtime support for FreeBSD/arm.

svn path=/head/; revision=129205

lib/csu/arm/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/arm/crt1.c

@@ -0,0 +1,137 @@
+/* LINTLIBRARY */
+/*-
+ * Copyright 2001 David E. O'Brien.
+ * All rights reserved.
+ * Copyright 1996-1998 John D. Polstra.
+ * All rights reserved.
+ * Copyright (c) 1997 Jason R. Thorpe.
+ * 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 for the
+ *          FreeBSD Project.  See http://www.freebsd.org/ for
+ *          information about FreeBSD.
+ *          This product includes software developed for the
+ *          NetBSD Project.  See http://www.netbsd.org/ for
+ *          information about NetBSD.
+ * 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 lint
+#ifndef __GNUC__
+#error "GCC is needed to compile this file"
+#endif
+#endif /* lint */
+
+#include <stdlib.h>
+
+#include "libc_private.h"
+#include "crtbrand.c"
+#include <machine/asm.h>
+
+struct Struct_Obj_Entry;
+struct ps_strings;
+
+extern int _DYNAMIC;
+#pragma weak _DYNAMIC
+
+extern void _fini(void);
+extern void _init(void);
+extern int main(int, char **, char **);
+extern void _start(int, char **, char **, const struct Struct_Obj_Entry *,
+    void (*)(void), struct ps_strings *);
+
+#ifdef GCRT
+extern void _mcleanup(void);
+extern void monstartup(void *, void *);
+extern int eprol;
+extern int etext;
+#endif
+
+char **environ;
+const char *__progname = "";
+struct ps_strings *__ps_strings;
+
+/* The entry function. */
+__asm("	.text			\n"
+"	.align	0		\n"
+"	.globl	_start		\n"
+"	_start:			\n"
+"	mov	r5, r2		/* cleanup */		\n"
+"	mov	r4, r1		/* obj_main */		\n"
+"	mov	r3, r0		/* ps_strings */	\n"
+"	/* Get argc, argv, and envp from stack */	\n"
+"	ldr	r0, [sp, #0x0000]	\n"
+"	add	r1, sp, #0x0004		\n"
+"	add	r2, r1, r0, lsl #2	\n"
+"	add	r2, r2, #0x0004		\n"
+"	/* Ensure the stack is properly aligned before calling C code. */\n"
+"	bic	sp, sp, #7	\n"
+"	sub	sp, sp, #8	\n"
+"	str	r5, [sp, #4]	\n"
+"	str	r4, [sp, #0]	\n"
+"\n"
+"	b	 __start  ");
+/* ARGSUSED */
+void
+__start(int argc, char **argv, char **env,
+    const struct Struct_Obj_Entry *obj __unused, void (*cleanup)(void),
+    struct ps_strings *ps_strings)
+{
+	const char *s;
+
+	environ = env;
+
+	if (argc > 0 && argv[0] != NULL) {
+		__progname = argv[0];
+		for (s = __progname; *s != '\0'; s++)
+			if (*s == '/')
+				__progname = s + 1;
+	}
+
+	if (ps_strings != (struct ps_strings *)0)
+		__ps_strings = ps_strings;
+
+	if (&_DYNAMIC != NULL)
+		atexit(cleanup);
+
+#ifdef GCRT
+	atexit(_mcleanup);
+#endif
+	atexit(_fini);
+#ifdef GCRT
+	monstartup(&eprol, &etext);
+#endif
+	_init();
+	exit( main(argc, argv, env) );
+}
+
+#ifdef GCRT
+__asm__(".text");
+__asm__("eprol:");
+__asm__(".previous");
+#endif
+
+__asm__(".ident\t\"$FreeBSD$\"");

lib/csu/arm/crti.S

@@ -0,0 +1,5 @@
+#include <machine/asm.h>
+__FBSDID("$FreeBSD$");
+
+ENTRY(_init)
+ENTRY(_fini)

lib/csu/arm/crtn.S

@@ -0,0 +1,4 @@
+#include <machine/asm.h>
+__FBSDID("$FreeBSD$");
+.section init
+.section fini