From 808694e8a330e32741b7781467610d8cec99ae6e Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Fri, 8 Dec 2006 22:53:40 +0000 Subject: Richard Sandiford writes: add support for init/fini arrays in shared flat libraries --- libc/misc/internals/shared_flat_initfini.c | 53 ++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 libc/misc/internals/shared_flat_initfini.c (limited to 'libc/misc/internals/shared_flat_initfini.c') diff --git a/libc/misc/internals/shared_flat_initfini.c b/libc/misc/internals/shared_flat_initfini.c new file mode 100644 index 000000000..81e53834e --- /dev/null +++ b/libc/misc/internals/shared_flat_initfini.c @@ -0,0 +1,53 @@ +/* + * Copyright (C) 2006 CodeSourcery Inc + * + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + * + * This file defines the main initialisation and finalisation code for + * shared flat libraries. It in turn calls the initialisation and + * finalisation code for each registered library. + */ +#include "shared_flat_lib.h" + +/* A doubly-linked list of shared libraries. Those nearer the head + * of the list should be initialised first and finalised last. */ +struct shared_flat_lib *__first_shared_lib; +struct shared_flat_lib *__last_shared_lib; + +void __shared_flat_init(void) +{ + struct shared_flat_lib *lib; + void (**start)(void); + void (**end)(void); + + for (lib = __first_shared_lib; lib; lib = lib->next) { + end = lib->preinit_array_end; + for (start = lib->preinit_array_start; start < end; start++) + (*start)(); + } + + for (lib = __first_shared_lib; lib; lib = lib->next) { + if (lib->init) + lib->init(); + + end = lib->init_array_end; + for (start = lib->init_array_start; start < end; start++) + (*start)(); + } +} + +void __shared_flat_fini(void) +{ + struct shared_flat_lib *lib; + void (**start)(void); + void (**end)(void); + + for (lib = __last_shared_lib; lib; lib = lib->prev) { + start = lib->fini_array_start; + for (end = lib->fini_array_end; end > start;) + (*--end)(); + + if (lib->fini) + lib->fini(); + } +} -- cgit v1.2.3