added support for R_X86_64_64/R_X86_64_RELATIVE relocations + added init/fini

1 files changed, 10 insertions, 0 deletions

diff --git a/04_dynld_nostd/libgreet.c b/04_dynld_nostd/libgreet.c
index 439e236..e697690 100644
--- a/04_dynld_nostd/libgreet.c
+++ b/04_dynld_nostd/libgreet.c
@@ -1,5 +1,7 @@
 // Copyright (c) 2020 Johannes Stoelp
 
+#include <io.h>
+
 int gCalled = 0;
 
 const char* get_greet() {
@@ -11,3 +13,11 @@ const char* get_greet2() {
     ++gCalled;
     return "Hello 2 from libgreet.so!";
 }
+
+__attribute__((constructor)) static void libinit() { /* static -> generates R_X86_64_RELATIVE relocation */
+    pfmt("libgreet.so: libinit\n");
+}
+
+__attribute__((destructor)) void libfini() { /* non static -> generates R_X86_64_64 relocation */
+    pfmt("libgreet.so: libfini\n");
+}