| // 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::{LinkerFlavor, LldFlavor, Target, TargetOptions}; |
| |
| pub fn target() -> Target { |
| Target { |
| llvm_target: "thumbv7em-none-eabi".to_string(), |
| target_endian: "little".to_string(), |
| pointer_width: 32, |
| target_c_int_width: "32".to_string(), |
| data_layout: "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64".to_string(), |
| arch: "arm".to_string(), |
| target_os: "none".to_string(), |
| target_env: String::new(), |
| target_vendor: String::new(), |
| linker_flavor: LinkerFlavor::Lld(LldFlavor::Ld), |
| |
| options: TargetOptions { max_atomic_width: Some(32), ..super::thumb_base::opts() }, |
| } |
| } |
