diff --git a/gdb/loongarch-tdep.c b/gdb/loongarch-tdep.c
index ffcff03109a..0eda1636561 100644
--- a/gdb/loongarch-tdep.c
+++ b/gdb/loongarch-tdep.c
@@ -268,6 +268,10 @@ loongarch_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
   set_gdbarch_int_bit (gdbarch, 32);
   set_gdbarch_long_bit (gdbarch, info.bfd_arch_info->bits_per_address);
   set_gdbarch_long_long_bit (gdbarch, 64);
+  set_gdbarch_float_bit (gdbarch, 32);
+  set_gdbarch_double_bit (gdbarch, 64);
+  set_gdbarch_long_double_bit (gdbarch, 128);
+  set_gdbarch_long_double_format (gdbarch, floatformats_ia64_quad);
   set_gdbarch_ptr_bit (gdbarch, info.bfd_arch_info->bits_per_address);
   set_gdbarch_char_signed (gdbarch, 0);