Add support for R_X86_64_REX_GOTPCRELX relocation type

main.py

@@ -119,6 +119,8 @@ def _reloc_type2size(s):
             return 4
         case "R_X86_64_PLT32":
             return 4
+        case "R_X86_64_REX_GOTPCRELX":
+            return 4
         case _:
             assert False, f"Unknown reloc {s}"