Add more IFUNC tests.

Mostly tests around not-exported IFUNC functions, IFUNC in statically
linked binaries and PIEs, etc.

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;
+}