Test for ELF IFUNC functionality.

1 files changed, 114 insertions, 0 deletions

diff --git a/elf/ifuncmod1.c b/elf/ifuncmod1.c
new file mode 100644
index 0000000..a1697b5
--- /dev/null
+++ b/elf/ifuncmod1.c
@@ -0,0 +1,114 @@
+/* Test STT_GNU_IFUNC symbols:
+
+   1. Direct function call.
+   2. Function pointer.
+   3. Visibility.
+ */
+
+extern int global;
+
+static int
+one (void)
+{
+  return 1;
+}
+
+static int
+minus_one (void)
+{
+  return -1;
+}
+
+static int
+zero (void) 
+{
+  return 0;
+}
+
+void * foo_ifunc (void) __asm__ ("foo");
+__asm__(".type foo, %gnu_indirect_function");
+
+void * 
+foo_ifunc (void)
+{
+  switch (global)
+    {
+    case 1:
+      return one;
+    case -1:
+      return minus_one;
+    default:
+      return zero;
+    }
+}
+
+void * foo_hidden_ifunc (void) __asm__ ("foo_hidden");
+__asm__(".type foo_hidden, %gnu_indirect_function");
+
+void * 
+foo_hidden_ifunc (void)
+{
+  switch (global)
+    {
+    case 1:
+      return minus_one;
+    case -1:
+      return one;
+    default:
+      return zero;
+    }
+}
+
+void * foo_protected_ifunc (void) __asm__ ("foo_protected");
+__asm__(".type foo_protected, %gnu_indirect_function");
+
+void * 
+foo_protected_ifunc (void)
+{
+  switch (global)
+    {
+    case 1:
+      return one;
+    case -1:
+      return zero;
+    default:
+      return minus_one;
+    }
+}
+
+/* Test hidden indirect function.  */
+__asm__(".hidden foo_hidden");
+
+/* Test protected indirect function.  */
+__asm__(".protected foo_protected");
+
+extern int foo (void);
+extern int foo_hidden (void);
+extern int foo_protected (void);
+extern int ret_foo;
+extern int ret_foo_hidden;
+extern int ret_foo_protected;
+
+#define FOO_P
+typedef int (*foo_p) (void);
+
+foo_p
+get_foo_p (void)
+{
+  ret_foo = foo ();
+  return foo;
+}
+
+foo_p
+get_foo_hidden_p (void)
+{
+  ret_foo_hidden = foo_hidden ();
+  return foo_hidden;
+}
+
+foo_p
+get_foo_protected_p (void)
+{
+  ret_foo_protected = foo_protected ();
+  return foo_protected;
+}