Procedure macro for bringing a compile-time compiled assembly code as a binary slice.
```
let bin = bingen!("aarch64-linux-eabi", "mrs x0, DBGDTR_EL0");
assert_eq!(bin, [0, 4, 51, 213]);
```
Currently, this crate supports macOS+Homebrew / Linux+llvm-8 environments by default.
If you want to use other llvm installation, specify the paths manually like this:
```
BINGEN_CLANG_PATH=/path/to/clang \
BINGEN_OBJCOPY_PATH=/path/to/llvm-objcopy \
cargo test
```