1 files changed, 27 insertions, 0 deletions
diff --git a/compiler/rustc_target/src/spec/thumbv7em_none_eabi.rs b/compiler/rustc_target/src/spec/thumbv7em_none_eabi.rs
new file mode 100644
index 000000000..000e5f2d3
--- /dev/null
+++ b/compiler/rustc_target/src/spec/thumbv7em_none_eabi.rs
@@ -0,0 +1,27 @@
+// Targets the Cortex-M4 and Cortex-M7 processors (ARMv7E-M)
+//
+// This target assumes that the device doesn't have a FPU (Floating Point Unit) and lowers all the
+// floating point operations to software routines (intrinsics).
+//
+// As such, this target uses the "soft" calling convention (ABI) where floating point values are
+// passed to/from subroutines via general purpose registers (R0, R1, etc.).
+//
+// To opt-in to hardware accelerated floating point operations, you can use, for example,
+// `-C target-feature=+vfp4` or `-C target-cpu=cortex-m4`.
+
+use crate::spec::{Target, TargetOptions};
+
+pub fn target() -> Target {
+    Target {
+        llvm_target: "thumbv7em-none-eabi".into(),
+        pointer_width: 32,
+        data_layout: "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64".into(),
+        arch: "arm".into(),
+
+        options: TargetOptions {
+            abi: "eabi".into(),
+            max_atomic_width: Some(32),
+            ..super::thumb_base::opts()
+        },
+    }
+}