From 737e1d25692ff57699fddb379d62dd6ec1cb2006 Mon Sep 17 00:00:00 2001
From: zhaixiaojuan <zhaixiaojuan@loongson.cn>
Date: Fri, 3 Feb 2023 11:47:27 +0800
Subject: [PATCH] loongarch64: calculate the ELF header flags

---
 compiler/rustc_codegen_ssa/src/back/metadata.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/compiler/rustc_codegen_ssa/src/back/metadata.rs b/compiler/rustc_codegen_ssa/src/back/metadata.rs
index 19485175fd1..8ee7d8cf6d0 100644
--- a/compiler/rustc_codegen_ssa/src/back/metadata.rs
+++ b/compiler/rustc_codegen_ssa/src/back/metadata.rs
@@ -192,6 +192,10 @@ pub(crate) fn create_object_file(sess: &Session) -> Option<write::Object<'static
             }
             e_flags
         }
+        Architecture::LoongArch64 => {
+            // Source: https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html#_e_flags_identifies_abi_type_and_version
+            elf::EF_LARCH_OBJABI_V1 | elf::EF_LARCH_ABI_DOUBLE_FLOAT
+        }
         _ => 0,
     };
     // adapted from LLVM's `MCELFObjectTargetWriter::getOSABI`