Split out Rust BPF no-std stuff (#4968)

programs/bpf/rust/many_args_dep/src/lib.rs

@@ -22,3 +22,27 @@ pub fn many_args(
     info!(arg6, arg7, arg8, arg9, 0);
     arg1 + arg2 + arg3 + arg4 + arg5 + arg6 + arg7 + arg8 + arg9
 }
+
+#[cfg(test)]
+mod test {
+    extern crate solana_sdk_bpf_test;
+    extern crate std;
+    use super::*;
+
+    #[no_mangle]
+    pub unsafe fn sol_log_(message: *const u8, length: u64) {
+        let slice = std::slice::from_raw_parts(message, length as usize);
+        let string = std::str::from_utf8(&slice).unwrap();
+        std::println!("{}", string);
+    }
+
+    #[no_mangle]
+    pub fn sol_log_64_(arg1: u64, arg2: u64, arg3: u64, arg4: u64, arg5: u64) {
+        std::println!("{} {} {} {} {}", arg1, arg2, arg3, arg4, arg5);
+    }
+
+    #[test]
+    fn test_many_args() {
+        assert_eq!(45, many_args(1, 2, 3, 4, 5, 6, 7, 8, 9));
+    }
+}