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, 9 insertions, 5 deletions

diff --git a/cortex-m-rt/assemble.sh b/cortex-m-rt/assemble.sh
index cdb3205..b914fed 100755
--- a/cortex-m-rt/assemble.sh
+++ b/cortex-m-rt/assemble.sh
@@ -9,21 +9,25 @@ crate=cortex-m-rt
 # remove existing blobs because otherwise this will append object files to the old blobs
 rm -f bin/*.a
 
-arm-none-eabi-as -march=armv6s-m asm.s -o bin/$crate.o
+arm-none-eabi-gcc -c -march=armv6s-m asm.S -o bin/$crate.o
 ar crs bin/thumbv6m-none-eabi.a bin/$crate.o
 
-arm-none-eabi-as -march=armv7-m asm.s -o bin/$crate.o
+arm-none-eabi-gcc -c -march=armv7-m asm.S -o bin/$crate.o
 ar crs bin/thumbv7m-none-eabi.a bin/$crate.o
 
-arm-none-eabi-as -march=armv7e-m asm.s -o bin/$crate.o
+arm-none-eabi-gcc -c -march=armv7e-m asm.S -o bin/$crate.o
 ar crs bin/thumbv7em-none-eabi.a bin/$crate.o
+
+arm-none-eabi-gcc -c -march=armv7e-m asm.S -DHAS_FPU -o bin/$crate.o
 ar crs bin/thumbv7em-none-eabihf.a bin/$crate.o
 
-arm-none-eabi-as -march=armv8-m.base asm.s -o bin/$crate.o
+arm-none-eabi-gcc -c -march=armv8-m.base asm.S -o bin/$crate.o
 ar crs bin/thumbv8m.base-none-eabi.a bin/$crate.o
 
-arm-none-eabi-as -march=armv8-m.main asm.s -o bin/$crate.o
+arm-none-eabi-gcc -c -march=armv8-m.main asm.S -o bin/$crate.o
 ar crs bin/thumbv8m.main-none-eabi.a bin/$crate.o
+
+arm-none-eabi-gcc -c -march=armv8-m.main -DHAS_FPU asm.S -o bin/$crate.o
 ar crs bin/thumbv8m.main-none-eabihf.a bin/$crate.o
 
 rm bin/$crate.o