2005-01-07 Paul Brook <paul@codesourcery.com>

        * configure.in: Add test for .init_array.
        * configure: Regenerate.
        * newlib.hin: Add HAVE_INITFINI_ARRAY.
        * libc/misc/Makefile.am: Add init.c
        * libc/misc/Makefile.in: Regenerate.
        * libc/misc/init.c: New file.
        * libc/sys/arm/crt0.S: Call __libc_{init,fini}_array instead of
        _init/_fini if they exist.

3 files changed, 65 insertions, 4 deletions

diff --git a/newlib/libc/misc/Makefile.am b/newlib/libc/misc/Makefile.am
index e5ed00b17..fa3a8ce6d 100644
--- a/newlib/libc/misc/Makefile.am
+++ b/newlib/libc/misc/Makefile.am
@@ -4,7 +4,7 @@ AUTOMAKE_OPTIONS = cygnus
 
 INCLUDES = $(NEWLIB_CFLAGS) $(CROSS_CFLAGS) $(TARGET_CFLAGS)
 
-LIB_SOURCES = dprintf.c unctrl.c ffs.c
+LIB_SOURCES = dprintf.c unctrl.c ffs.c init.c
 
 libmisc_la_LDFLAGS = -Xcompiler -nostdlib
 
diff --git a/newlib/libc/misc/Makefile.in b/newlib/libc/misc/Makefile.in
index 72376f7a9..22301b80c 100644
--- a/newlib/libc/misc/Makefile.in
+++ b/newlib/libc/misc/Makefile.in
@@ -110,7 +110,7 @@ AUTOMAKE_OPTIONS = cygnus
 
 INCLUDES = $(NEWLIB_CFLAGS) $(CROSS_CFLAGS) $(TARGET_CFLAGS)
 
-LIB_SOURCES = dprintf.c unctrl.c ffs.c
+LIB_SOURCES = dprintf.c unctrl.c ffs.c init.c
 
 libmisc_la_LDFLAGS = -Xcompiler -nostdlib
 
@@ -140,11 +140,12 @@ CPPFLAGS = @CPPFLAGS@
 LIBS = @LIBS@
 lib_a_LIBADD = 
 @USE_LIBTOOL_FALSE@lib_a_OBJECTS =  dprintf.$(OBJEXT) unctrl.$(OBJEXT) \
-@USE_LIBTOOL_FALSE@ffs.$(OBJEXT)
+@USE_LIBTOOL_FALSE@ffs.$(OBJEXT) init.$(OBJEXT)
 LTLIBRARIES =  $(noinst_LTLIBRARIES)
 
 libmisc_la_LIBADD = 
-@USE_LIBTOOL_TRUE@libmisc_la_OBJECTS =  dprintf.lo unctrl.lo ffs.lo
+@USE_LIBTOOL_TRUE@libmisc_la_OBJECTS =  dprintf.lo unctrl.lo ffs.lo \
+@USE_LIBTOOL_TRUE@init.lo
 CFLAGS = @CFLAGS@
 COMPILE = $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
 LTCOMPILE = $(LIBTOOL) --mode=compile $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
diff --git a/newlib/libc/misc/init.c b/newlib/libc/misc/init.c
new file mode 100644
index 000000000..539fbefed
--- /dev/null
+++ b/newlib/libc/misc/init.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2004 CodeSourcery, LLC
+ *
+ * Permission to use, copy, modify, and distribute this file
+ * for any purpose is hereby granted without fee, provided that
+ * the above copyright notice and this notice appears in all
+ * copies.
+ *
+ * This file is distributed WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/* Handle ELF .{pre_init,init,fini}_array sections.  */
+#include <sys/types.h>
+
+#ifdef HAVE_INITFINI_ARRAY
+
+/* These magic symbols are provided by the linker.  */
+extern void (*__preinit_array_start []) (void) __attribute__((weak));
+extern void (*__preinit_array_end []) (void) __attribute__((weak));
+extern void (*__init_array_start []) (void) __attribute__((weak));
+extern void (*__init_array_end []) (void) __attribute__((weak));
+extern void (*__fini_array_start []) (void) __attribute__((weak));
+extern void (*__fini_array_end []) (void) __attribute__((weak));
+
+extern void _init (void);
+extern void _fini (void);
+
+/* Iterate over all the init routines.  */
+void
+__libc_init_array (void)
+{
+  size_t count;
+  size_t i;
+
+  count = __preinit_array_end - __preinit_array_start;
+  for (i = 0; i < count; i++)
+    __preinit_array_start[i] ();
+
+  _init ();
+
+  count = __init_array_end - __init_array_start;
+  for (i = 0; i < count; i++)
+    __init_array_start[i] ();
+}
+
+/* Run all the cleanup routines.  */
+void
+__libc_fini_array (void)
+{
+  size_t count;
+  size_t i;
+  
+  count = __fini_array_end - __fini_array_start;
+  for (i = 0; i < count; i++)
+    __fini_array_start[i] ();
+
+  _fini ();
+}
+#endif