oops, forgot it add this earlier (pr#5425)

1998-05-09 03:48:37 +00:00 · 1998-05-09 03:48:37 +00:00 · f23ec91e29
parent e937bf2ed5
commit f23ec91e29
1 changed files with 115 additions and 0 deletions
--- a/lib/csu/mips/crtbegin.c
+++ b/lib/csu/mips/crtbegin.c
@ -0,0 +1,115 @@
+/*	$NetBSD: crtbegin.c,v 1.1 1998/05/09 03:48:37 mrg 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.
+ */
+
+/*
+ * XXX EVENTUALLY SHOULD BE MERGED BACK WITH c++rt0.c
+ */
+
+/*
+ * Run-time module which handles constructors and destructors,
+ * and NetBSD identification.
+ *
+ * The linker constructs the following arrays of pointers to global
+ * constructors and destructors. The first element contains the
+ * number of pointers in each or -1 to indicate that the run-time
+ * code should figure out how many there are.  The tables are also
+ * null-terminated.
+ */
+
+#include <sys/param.h>
+#include <sys/exec.h>
+#include <sys/exec_elf.h>
+#include <stdlib.h>
+
+#include "sysident.h"
+
+static void (*__CTOR_LIST__[1]) __P((void))
+    __attribute__((section(".ctors"))) = { (void *)-1 };	/* XXX */
+static void (*__DTOR_LIST__[1]) __P((void))
+    __attribute__((section(".dtors"))) = { (void *)-1 };	/* XXX */
+
+static void	__dtors __P((void));
+static void	__ctors __P((void));
+
+static void
+__dtors()
+{
+	unsigned long i = (unsigned long) __DTOR_LIST__[0];
+	void (**p)(void);
+
+	if (i == -1)  {
+		for (i = 1; __DTOR_LIST__[i] != NULL; i++)
+			;
+		i--;
+	}
+	p = __DTOR_LIST__ + i;
+	while (i--)
+		(**p--)();
+}
+
+static void
+__ctors()
+{
+	void (**p)(void) = __CTOR_LIST__ + 1;
+
+	while (*p)
+		(**p++)();
+}
+
+extern void _init(void) __attribute__((section(".init")));
+
+void
+_init()
+{
+	static int initialized = 0;
+
+	/*
+	 * Call global constructors.
+	 * Arrange to call global destructors at exit.
+	 */
+	if (!initialized) {
+		initialized = 1;
+		__ctors();
+	}
+
+}
+
+extern void _fini(void) __attribute__((section(".fini")));
+
+void
+_fini()
+{
+	/*
+	 * Call global destructors.
+	 */
+	__dtors();
+}