1 files changed, 84 insertions, 0 deletions
diff --git a/libc/misc/elf/dl-iterate-phdr.c b/libc/misc/elf/dl-iterate-phdr.c
new file mode 100644
index 000000000..a23ca700d
--- /dev/null
+++ b/libc/misc/elf/dl-iterate-phdr.c
@@ -0,0 +1,84 @@
+/* Get loaded objects program headers.
+   Copyright (C) 2001,2002,2003,2004,2006,2007 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2001.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.
+   */
+
+
+#include <link.h>
+#include <ldso.h>
+
+/* we want this in libc but nowhere else */
+#ifdef __USE_GNU
+
+extern __typeof(dl_iterate_phdr) __dl_iterate_phdr;
+
+hidden_proto(__dl_iterate_phdr)
+int
+__dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info, size_t size, void *data), void *data)
+{
+	struct elf_resolve *l;
+	struct dl_phdr_info info;
+	int ret = 0;
+
+	for (l = _dl_loaded_modules; l != NULL; l = l->next) {
+		info.dlpi_addr = l->loadaddr;
+		info.dlpi_name = l->libname;
+		info.dlpi_phdr = l->ppnt;
+		info.dlpi_phnum = l->n_phent;
+		ret = callback (&info, sizeof (struct dl_phdr_info), data);
+		if (ret)
+			break;
+	}
+	return ret;
+}
+hidden_def (__dl_iterate_phdr)
+
+# ifdef SHARED
+
+weak_alias(__dl_iterate_phdr, dl_iterate_phdr)
+
+# else
+
+/* dl-support.c defines these and initializes them early on.  */
+extern ElfW(Phdr) *_dl_phdr;
+extern size_t _dl_phnum;
+
+int
+dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info,
+                                  size_t size, void *data), void *data)
+{
+  if (_dl_phnum != 0)
+    {
+      /* This entry describes this statically-linked program itself.  */
+      struct dl_phdr_info info;
+      int ret;
+      info.dlpi_addr = 0;
+      info.dlpi_name = "";
+      info.dlpi_phdr = _dl_phdr;
+      info.dlpi_phnum = _dl_phnum;
+      ret = (*callback) (&info, sizeof (struct dl_phdr_info), data);
+      if (ret)
+        return ret;
+    }
+   /* Then invoke callback on loaded modules, if any */
+  return __dl_iterate_phdr (callback, data);
+}
+
+# endif
+#endif