Merge #278

278: Mark main() with a C ABI r=jonas-schievink a=mciantyre

See #277. The PR updates `Reset` to describe `main()` as having a C ABI, rather than a Rust ABI.

Co-authored-by: Ian McIntyre <[email protected]>

Author: bors[bot]

cortex-m-rt/src/lib.rs

@@ -897,12 +897,11 @@ pub unsafe extern "C" fn Reset() -> ! {
         static mut __edata: u32;
         static __sidata: u32;
 
-    }
-
-    extern "Rust" {
         // This symbol will be provided by the user via `#[entry]`
         fn main() -> !;
+    }
 
+    extern "Rust" {
         // This symbol will be provided by the user via `#[pre_init]`
         fn __pre_init();
     }