138 uintptr_t ZPlatformAddressSpaceStart() {

   139   const uintptr_t first_heap_view_address = (uintptr_t)1 << (ZPlatformAddressMetadataShift() + 0);

   140   const size_t min_address_offset = 0;

   141   return first_heap_view_address + min_address_offset;

   142 }

   143 

   144 uintptr_t ZPlatformAddressSpaceEnd() {

   145   const uintptr_t last_heap_view_address = (uintptr_t)1 << (ZPlatformAddressMetadataShift() + 2);

   146   const size_t max_address_offset = (size_t)1 << ZPlatformAddressOffsetBits();

   147   return last_heap_view_address + max_address_offset;

   148 }

   149 

   150 uintptr_t ZPlatformAddressReservedStart() {

   151   return ZPlatformAddressSpaceStart();

   152 }

   153 

   154 uintptr_t ZPlatformAddressReservedEnd() {

   155   return ZPlatformAddressSpaceEnd();

   156 }

   157