Richard Sandiford writes: add support for init/fini arrays in shared flat libraries

1 files changed, 35 insertions, 0 deletions

diff --git a/libc/misc/internals/shared_flat_lib.h b/libc/misc/internals/shared_flat_lib.h
new file mode 100644
index 000000000..e01213564
--- /dev/null
+++ b/libc/misc/internals/shared_flat_lib.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2006 CodeSourcery Inc
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ *
+ * This file defines the shared_flat_lib structure and the global library
+ * list.   The structure is used to provide something close to ELF-like
+ * initialisation and finalisation when using shared flat libraries.
+ */
+#ifndef __SHARED_FLAT_LIB__
+#define __SHARED_FLAT_LIB__
+
+struct shared_flat_lib {
+	struct shared_flat_lib *prev;
+	struct shared_flat_lib *next;
+	/* .preinit_array is usually only supported for executables.
+	 * However, the distinction between the executable and its
+	 * shared libraries isn't as pronounced for flat files; a shared
+	 * library is really just a part of an executable that can be
+	 * shared with other executables.  We therefore allow
+	 * .preinit_array to be used in libraries too.  */
+	void (**preinit_array_start)(void);
+	void (**preinit_array_end)(void);
+	void (**init_array_start)(void);
+	void (**init_array_end)(void);
+	void (**fini_array_start)(void);
+	void (**fini_array_end)(void);
+	void (*init)(void);
+	void (*fini)(void);
+};
+
+extern struct shared_flat_lib *__first_shared_lib;
+extern struct shared_flat_lib *__last_shared_lib;
+
+#endif