1 files changed, 77 insertions, 0 deletions
diff --git a/lib/csu/sparc/crtbegin.c b/lib/csu/sparc/crtbegin.c
new file mode 100644
index 0000000..4cb2903
--- /dev/null
+++ b/lib/csu/sparc/crtbegin.c
@@ -0,0 +1,77 @@
+/*-
+ * Copyright 1996-1998 John D. Polstra.
+ * 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.
+ *
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+typedef void (*fptr)(void);
+
+static fptr ctor_list[1] __attribute__((section(".ctors"))) = { (fptr) -1 };
+static fptr dtor_list[1] __attribute__((section(".dtors"))) = { (fptr) -1 };
+
+/* Both do_ctors() and do_dtors() live in .text (the default) */
+static void
+do_ctors(void)
+{
+    fptr *fpp;
+
+    for(fpp = ctor_list + 1;  *fpp != 0;  ++fpp)
+	(**fpp)();
+}
+
+static void
+do_dtors(void)
+{
+    fptr *fpp;
+
+    for(fpp = dtor_list + 1;  *fpp != 0;  ++fpp)
+	;
+    while(--fpp > dtor_list)
+	(**fpp)();
+}
+
+/*
+ * On very large programs, it is possible to get a relocation overflow
+ * of the 21-bit BSR displacements.  It is particularly likely for the
+ * calls from _init() and _fini(), because they are in separate sections.
+ * Avoid the problem by forcing indirect calls.
+ */
+static void (*p_do_ctors)(void) = do_ctors;
+static void (*p_do_dtors)(void) = do_dtors;
+
+extern void _init(void) __attribute__((section(".init")));
+
+void
+_init(void)
+{
+	(*p_do_ctors)();
+}
+
+extern void _fini(void) __attribute__((section(".fini")));
+
+void
+_fini(void)
+{
+	(*p_do_dtors)();
+}