diff --git a/runtime/elf_file_impl.h b/runtime/elf_file_impl.h
index 2af31dc..1cdbedc 100644
--- a/runtime/elf_file_impl.h
+++ b/runtime/elf_file_impl.h
@@ -48,9 +48,17 @@
   using Elf_Phdr = typename ElfTypes::Phdr;
   using Elf_Dyn = typename ElfTypes::Dyn;
 
-  static ElfFileImpl* Open(File* file, bool writable, bool program_header_only,
-                           std::string* error_msg, uint8_t* requested_base = nullptr);
-  static ElfFileImpl* Open(File* file, int mmap_prot, int mmap_flags, std::string* error_msg);
+  static ElfFileImpl* Open(File* file,
+                           bool writable,
+                           bool program_header_only,
+                           bool low_4gb,
+                           std::string* error_msg,
+                           uint8_t* requested_base = nullptr);
+  static ElfFileImpl* Open(File* file,
+                           int mmap_prot,
+                           int mmap_flags,
+                           bool low_4gb,
+                           std::string* error_msg);
   ~ElfFileImpl();
 
   const File& GetFile() const {
@@ -111,7 +119,7 @@
 
   // Load segments into memory based on PT_LOAD program headers.
   // executable is true at run time, false at compile time.
-  bool Load(bool executable, std::string* error_msg);
+  bool Load(bool executable, bool low_4gb, std::string* error_msg);
 
   bool Fixup(Elf_Addr base_address);
   bool FixupDynamic(Elf_Addr base_address);
@@ -129,7 +137,7 @@
  private:
   ElfFileImpl(File* file, bool writable, bool program_header_only, uint8_t* requested_base);
 
-  bool Setup(int prot, int flags, std::string* error_msg);
+  bool Setup(int prot, int flags, bool low_4gb, std::string* error_msg);
 
   bool SetMap(MemMap* map, std::string* error_msg);