Update Reset-in-asm.

* Use arm-none-eabi-gcc to assemble, allowing use of preprocessor to
  conditionally enable the FPU for eabihf targets.
* Remove has_fpu configuration from build.rs.
* Remove FpuTrampoline as no longer required.
* Remove the Rust Reset method entirely, since the asm Reset can now
  enable FPU and jump to user main.

1 files changed, 0 insertions, 8 deletions

diff --git a/cortex-m-rt/build.rs b/cortex-m-rt/build.rs
index 67cdfab..c56f14c 100644
--- a/cortex-m-rt/build.rs
+++ b/cortex-m-rt/build.rs
@@ -7,8 +7,6 @@ fn main() {
     let target = env::var("TARGET").unwrap();
     let out_dir = PathBuf::from(env::var("OUT_DIR").unwrap());
 
-    has_fpu(&target);
-
     if target.starts_with("thumbv") {
         fs::copy(
             format!("bin/{}.a", target),
@@ -81,9 +79,3 @@ handlers.");
     println!("cargo:rerun-if-changed=build.rs");
     println!("cargo:rerun-if-changed=link.x.in");
 }
-
-fn has_fpu(target: &str) {
-    if target.ends_with("eabihf") {
-        println!("cargo:rustc-cfg=has_fpu");
-    }
-}