Fix resolving ELF symbols for live PIDs with deleted files

For deleted shared library files the offsets to the symbol table were
calculated wrongly from the phdrs because the main_bias wasn't taken into
account.

Formerly shared libraries did not get resolved properly:
	#2  0x00007fc4d86c56d6
	#3  0x0000000000400938 main

Fixed elfutils produce:
	#2  0x00007f61094876d6 libfunc
	#3  0x0000000000400938 main

Signed-off-by: Jan Kratochvil <[email protected]>

1 files changed, 27 insertions, 0 deletions

diff --git a/tests/deleted-lib.c b/tests/deleted-lib.c
new file mode 100644
index 00000000..1ff411b7
--- /dev/null
+++ b/tests/deleted-lib.c
@@ -0,0 +1,27 @@
+/* Test program for opening already deleted running binaries.
+   Copyright (C) 2014 Red Hat, Inc.
+   This file is part of elfutils.
+
+   This file is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   elfutils 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+#include <unistd.h>
+
+void
+libfunc (void)
+{
+  sleep (60000);
+  /* Avoid tail call optimization for the sleep call.  */
+  asm volatile ("");
+}