feat: initialize Kurdistan SDK - independent fork of Polkadot SDK

substrate/frame/revive/fixtures/contracts/call_own_code_hash.rs

@@ -0,0 +1,51 @@
+// This file is part of Substrate.
+
+// Copyright (C) Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//! This fixture calls the `ownCodeHash` function on the
+//! `System` pre-compile.
+
+#![allow(unused_imports)]
+#![no_std]
+#![no_main]
+include!("../panic_handler.rs");
+
+use core::num::NonZero;
+use uapi::{HostFn, HostFnImpl as api, u256_bytes};
+use hex_literal::hex;
+
+#[no_mangle]
+#[polkavm_derive::polkavm_export]
+pub extern "C" fn deploy() { }
+
+#[no_mangle]
+#[polkavm_derive::polkavm_export]
+pub extern "C" fn call() {
+	let mut output_buf = [0u8; 32];
+	let output = &mut &mut output_buf[..];
+	let _ = api::call(
+		uapi::CallFlags::READ_ONLY,
+		&uapi::SYSTEM_PRECOMPILE_ADDR,
+		u64::MAX,       // How much ref_time to devote for the execution. u64::MAX = use all.
+		u64::MAX,       // How much proof_size to devote for the execution. u64::MAX = use all.
+		&[u8::MAX; 32], // No deposit limit.
+		&[0u8; 32],     // Value transferred to the contract.
+		&uapi::solidity_selector("ownCodeHash()"),
+		Some(output),
+	).unwrap();
+	assert_ne!(output_buf, [0u8; 32]);
+	api::return_value(uapi::ReturnFlags::empty(), &output_buf);
+}