[mips64-openwrt-musl] Tier 3 tuple for Mips64 OpenWrt

This incorporates rust-lang into the OpenWrt build system for
Mips64 targets.

Signed-off-by: Donald Hoskins <grommish@gmail.com>

2 files changed, 28 insertions, 0 deletions

diff --git a/compiler/rustc_target/src/spec/mips64_openwrt_linux_musl.rs b/compiler/rustc_target/src/spec/mips64_openwrt_linux_musl.rs
new file mode 100644
index 00000000000..1199ed44202
--- /dev/null
+++ b/compiler/rustc_target/src/spec/mips64_openwrt_linux_musl.rs
@@ -0,0 +1,26 @@
+/// A target tuple for OpenWrt MIPS64 targets
+///
+use crate::abi::Endian;
+use crate::spec::{Target, TargetOptions};
+
+pub fn target() -> Target {
+    let mut base = super::linux_musl_base::opts();
+    base.cpu = "mips64r2".to_string();
+    base.features = "+mips64r2".to_string();
+    base.max_atomic_width = Some(64);
+    base.crt_static_default = false;
+
+    Target {
+        // LLVM doesn't recognize "muslabi64" yet.
+        llvm_target: "mips64-unknown-linux-musl".to_string(),
+        pointer_width: 64,
+        data_layout: "E-m:e-i8:8:32-i16:16:32-i64:64-n32:64-S128".to_string(),
+        arch: "mips64".to_string(),
+        options: TargetOptions {
+            abi: "abi64".to_string(),
+            endian: Endian::Big,
+            mcount: "_mcount".to_string(),
+            ..base
+        },
+    }
+}
diff --git a/compiler/rustc_target/src/spec/mod.rs b/compiler/rustc_target/src/spec/mod.rs
index 4effb8bacf6..f17c0ec248d 100644
--- a/compiler/rustc_target/src/spec/mod.rs
+++ b/compiler/rustc_target/src/spec/mod.rs
@@ -1016,6 +1016,8 @@ supported_targets! {
     ("armv7-unknown-linux-uclibceabihf", armv7_unknown_linux_uclibceabihf),
 
     ("x86_64-unknown-none", x86_64_unknown_none),
+
+    ("mips64-openwrt-linux-musl", mips64_openwrt_linux_musl),
 }
 
 /// Warnings encountered when parsing the target `json`.