1 files changed, 40 insertions, 0 deletions
diff --git a/compiler/rustc_target/src/spec/x86_64_unknown_none.rs b/compiler/rustc_target/src/spec/x86_64_unknown_none.rs
new file mode 100644
index 000000000..809fd642d
--- /dev/null
+++ b/compiler/rustc_target/src/spec/x86_64_unknown_none.rs
@@ -0,0 +1,40 @@
+// Generic x86-64 target for bare-metal code - Floating point disabled
+//
+// Can be used in conjunction with the `target-feature` and
+// `target-cpu` compiler flags to opt-in more hardware-specific
+// features.
+
+use super::{
+    CodeModel, LinkerFlavor, LldFlavor, PanicStrategy, RelocModel, RelroLevel, StackProbeType,
+    Target, TargetOptions,
+};
+
+pub fn target() -> Target {
+    let opts = TargetOptions {
+        cpu: "x86-64".into(),
+        max_atomic_width: Some(64),
+        // don't use probe-stack=inline-asm until rust#83139 and rust#84667 are resolved
+        stack_probes: StackProbeType::Call,
+        position_independent_executables: true,
+        static_position_independent_executables: true,
+        relro_level: RelroLevel::Full,
+        relocation_model: RelocModel::Pic,
+        linker_flavor: LinkerFlavor::Lld(LldFlavor::Ld),
+        linker: Some("rust-lld".into()),
+        features:
+            "-mmx,-sse,-sse2,-sse3,-ssse3,-sse4.1,-sse4.2,-3dnow,-3dnowa,-avx,-avx2,+soft-float"
+                .into(),
+        disable_redzone: true,
+        panic_strategy: PanicStrategy::Abort,
+        code_model: Some(CodeModel::Kernel),
+        ..Default::default()
+    };
+    Target {
+        llvm_target: "x86_64-unknown-none-elf".into(),
+        pointer_width: 64,
+        data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+            .into(),
+        arch: "x86_64".into(),
+        options: opts,
+    }
+}