Test for ELF IFUNC functionality.

1 files changed, 89 insertions, 0 deletions

diff --git a/elf/ifuncmain1vis.c b/elf/ifuncmain1vis.c
new file mode 100644
index 0000000..a239d2d
--- /dev/null
+++ b/elf/ifuncmain1vis.c
@@ -0,0 +1,89 @@
+/* Test STT_GNU_IFUNC symbols:
+
+   1. Direct function call.
+   2. Function pointer.
+   3. Visibility with override.
+ */
+
+#include <stdlib.h>
+
+int global = -1;
+
+int ret_foo;
+int ret_foo_hidden;
+int ret_foo_protected;
+
+extern int foo (void);
+extern int foo_protected (void);
+
+#ifndef FOO_P
+typedef int (*foo_p) (void);
+#endif
+
+foo_p foo_ptr = foo;
+foo_p foo_procted_ptr = foo_protected;
+
+extern foo_p get_foo_p (void);
+extern foo_p get_foo_hidden_p (void);
+extern foo_p get_foo_protected_p (void);
+
+int
+__attribute__ ((noinline))
+foo (void)
+{
+  return -30;
+}
+
+int
+__attribute__ ((noinline))
+foo_hidden (void)
+{
+  return -20;
+}
+
+int
+__attribute__ ((noinline))
+foo_protected (void)
+{
+  return -40;
+}
+
+int
+main (void)
+{
+  foo_p p;
+  
+  if (foo_ptr != foo)
+    abort ();
+  if ((*foo_ptr) () != -30)
+    abort ();
+
+  if (foo_procted_ptr != foo_protected)
+    abort ();
+  if ((*foo_procted_ptr) () != -40)
+    abort ();
+
+  p = get_foo_p ();
+  if (p != foo)
+    abort ();
+  if (foo () != -30)
+    abort ();
+  if (ret_foo != -30 || (*p) () != ret_foo)
+    abort ();
+
+  p = get_foo_hidden_p ();
+  if (foo_hidden () != -20)
+    abort ();
+  if (ret_foo_hidden != 1 || (*p) () != ret_foo_hidden)
+    abort ();
+
+  p = get_foo_protected_p ();
+  if (p == foo_protected)
+    abort ();
+  if (foo_protected () != -40)
+    abort ();
+  if (ret_foo_protected != 0 || (*p) () != ret_foo_protected)
+    abort ();
+
+  return 0;
+}