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authorH.J. Lu <hongjiu.lu@intel.com>2009-06-22 15:07:40 -0700
committerUlrich Drepper <drepper@redhat.com>2009-06-22 15:07:40 -0700
commit3c30afc8625c680257b91638c3d9bee01e1fe778 (patch)
tree46b73bd4a4ca129ce8818c14c83657a9d3018f02 /elf/ifuncmain6pie.c
parentccab6d8f73a17346862b681250de6f73a6940144 (diff)
downloadglibc-3c30afc8625c680257b91638c3d9bee01e1fe778.tar.gz
Add more IFUNC tests.
Mostly tests around not-exported IFUNC functions, IFUNC in statically linked binaries and PIEs, etc.
Diffstat (limited to 'elf/ifuncmain6pie.c')
-rw-r--r--elf/ifuncmain6pie.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/elf/ifuncmain6pie.c b/elf/ifuncmain6pie.c
new file mode 100644
index 0000000000..7e757e335f
--- /dev/null
+++ b/elf/ifuncmain6pie.c
@@ -0,0 +1,63 @@
+/* Test STT_GNU_IFUNC symbols in PIE:
+
+ 1. Direct function call.
+ 2. Function pointer.
+ 3. Reference from a shared library.
+ */
+
+#include <stdlib.h>
+
+typedef int (*foo_p) (void);
+extern foo_p foo_ptr;
+
+static int
+one (void)
+{
+ return -30;
+}
+
+void * foo_ifunc (void) __asm__ ("foo");
+__asm__(".type foo, %gnu_indirect_function");
+
+void *
+foo_ifunc (void)
+{
+ return one;
+}
+
+extern int foo (void);
+extern foo_p get_foo (void);
+extern foo_p get_foo_p (void);
+
+foo_p my_foo_ptr = foo;
+
+int
+main (void)
+{
+ foo_p p;
+
+ p = get_foo ();
+ if (p != foo)
+ abort ();
+ if ((*p) () != -30)
+ abort ();
+
+ p = get_foo_p ();
+ if (p != foo)
+ abort ();
+ if ((*p) () != -30)
+ abort ();
+
+ if (foo_ptr != foo)
+ abort ();
+ if (my_foo_ptr != foo)
+ abort ();
+ if ((*foo_ptr) () != -30)
+ abort ();
+ if ((*my_foo_ptr) () != -30)
+ abort ();
+ if (foo () != -30)
+ abort ();
+
+ return 0;
+}