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authorPetar Jovanovic <petar.jovanovic@rt-rk.com>2014-08-20 00:50:54 +0200
committerH.J. Lu <hjl.tools@gmail.com>2015-08-19 05:37:01 -0700
commitfa19d5c48a6b36518ce68412e3bdde6bfa8aa4a6 (patch)
treefeace153d8cbcbcf965076a32bdceee33d5c9895 /sysdeps/x86_64/tst-split-dynreloc.c
parent33c898d1607c1b8dac69c76eec289980292ebfc2 (diff)
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Fix dynamic linker issue with bind-now
Fix the bind-now case when DT_REL and DT_JMPREL sections are separate
and there is a gap between them.

	[BZ #14341]
	* elf/dynamic-link.h (elf_machine_lazy_rel): Properly handle the
	case when there is a gap between DT_REL and DT_JMPREL sections.
	* sysdeps/x86_64/Makefile (tests): Add tst-split-dynreloc.
	(LDFLAGS-tst-split-dynreloc): New.
	(tst-split-dynreloc-ENV): Likewise.
	* sysdeps/x86_64/tst-split-dynreloc.c: New file.
	* sysdeps/x86_64/tst-split-dynreloc.lds: Likewise.
Diffstat (limited to 'sysdeps/x86_64/tst-split-dynreloc.c')
-rw-r--r--sysdeps/x86_64/tst-split-dynreloc.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/sysdeps/x86_64/tst-split-dynreloc.c b/sysdeps/x86_64/tst-split-dynreloc.c
new file mode 100644
index 0000000000..2f9e9b9477
--- /dev/null
+++ b/sysdeps/x86_64/tst-split-dynreloc.c
@@ -0,0 +1,28 @@
+/* This test will be used to create an executable with a specific
+   section layout in which .rela.dyn and .rela.plt are not contiguous.
+   For x86 case, readelf will report something like:
+
+   ...
+   [10] .rela.dyn         RELA
+   [11] .bar              PROGBITS
+   [12] .rela.plt         RELA
+   ...
+
+   This is important as this case was not correctly handled by dynamic
+   linker in the bind-now case, and the second section was never
+   processed.  */
+
+#include <stdio.h>
+
+const int __attribute__ ((section(".bar"))) bar = 0x12345678;
+static const char foo[] = "foo";
+
+static int
+do_test (void)
+{
+  printf ("%s %d\n", foo, bar);
+  return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"