Add more IFUNC tests.

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

1 files changed, 78 insertions, 0 deletions

diff --git a/elf/ifuncmod5.c b/elf/ifuncmod5.c
new file mode 100644
index 0000000000..48388967b5
--- /dev/null
+++ b/elf/ifuncmod5.c
@@ -0,0 +1,78 @@
+/* Test STT_GNU_IFUNC symbols without direct function call.  */
+
+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");