[pallet-revive] update generic runtime types (#5608)

fix #5574

- Use U256 instead of BalanceOf<T> and MomentOf<T> in Ext trait
- Enforce H256 for T::Hash

The Ext trait still depends on the associated type `T: Config`, we can
look into refactoring it even more later but even in the current state
it should not influence how the data is encoded / decoded between the
contract and the host
```
fn caller(&self) -> Origin<Self::T>;
-> only use to extract the address of the caller 

fn account_id(&self) -> &AccountIdOf<Self::T>;
 -> only used to expose the address or access the account_id internally   

fn gas_meter(&self) -> &GasMeter<Self::T>;
fn gas_meter_mut(&mut self) -> &mut GasMeter<Self::T>;
 -> encoding does not depend on T

fn call_runtime(&self, call: <Self::T as Config>::RuntimeCall) -> DispatchResultWithPostInfo;
-> Substrate specific, just an opaque blob of bytes from the contract's perspective

fn contract_info(&mut self) -> &mut ContractInfo<Self::T>;
fn transient_storage(&mut self) -> &mut TransientStorage<Self::T>;
-> gated by #[cfg(any(test, feature = "runtime-benchmarks"))]
```

prdoc/pr_5608.prdoc

@@ -0,0 +1,16 @@
+title: "[pallet-revive] update runtime types" 
+
+doc:
+  - audience: Runtime Dev
+    description: |
+      Refactor the Ext trait to use U256 instead of BalanceOf<T> or MomentOf<T>
+
+crates:
+  - name: pallet-revive
+    bump: major
+  - name: pallet-revive-uapi
+    bump: patch
+  - name: pallet-revive-fixtures
+    bump: patch
+
+

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

@@ -18,7 +18,7 @@
 #![no_std]
 #![no_main]
 
-use common::output;
+use common::u64_output;
 use uapi::{HostFn, HostFnImpl as api};
 
 #[no_mangle]
@@ -28,9 +28,6 @@ pub extern "C" fn deploy() {}
 #[no_mangle]
 #[polkavm_derive::polkavm_export]
 pub extern "C" fn call() {
-	// Initialize buffer with 1s so that we can check that it is overwritten.
-	output!(balance, [1u8; 8], api::balance,);
-
-	// Assert that the balance is 0.
-	assert_eq!(&[0u8; 8], balance);
+	let balance = u64_output!(api::balance,);
+	assert_eq!(balance, 0);
 }

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

@@ -38,10 +38,10 @@ pub extern "C" fn call() {
 	api::call(
 		uapi::CallFlags::empty(),
 		callee_addr,
-		0u64,                // How much ref_time to devote for the execution. 0 = all.
-		0u64,                // How much proof_size to devote for the execution. 0 = all.
-		None,                // No deposit limit.
-		&0u64.to_le_bytes(), // Value transferred to the contract.
+		0u64,       // How much ref_time to devote for the execution. 0 = all.
+		0u64,       // How much proof_size to devote for the execution. 0 = all.
+		None,       // No deposit limit.
+		&[0u8; 32], // Value transferred to the contract.
 		callee_input,
 		None,
 	)

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

@@ -21,7 +21,7 @@
 #![no_std]
 #![no_main]
 
-use common::input;
+use common::{input, u256_bytes};
 use uapi::{HostFn, HostFnImpl as api};
 
 #[no_mangle]
@@ -41,10 +41,10 @@ pub extern "C" fn call() {
 	let err_code = match api::call(
 		uapi::CallFlags::empty(),
 		callee_addr,
-		0u64,                  // How much ref_time to devote for the execution. 0 = all.
-		0u64,                  // How much proof_size to devote for the execution. 0 = all.
-		None,                  // No deposit limit.
-		&100u64.to_le_bytes(), // Value transferred to the contract.
+		0u64,                // How much ref_time to devote for the execution. 0 = all.
+		0u64,                // How much proof_size to devote for the execution. 0 = all.
+		None,                // No deposit limit.
+		&u256_bytes(100u64), // Value transferred to the contract.
 		input,
 		None,
 	) {

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

@@ -42,10 +42,10 @@ pub extern "C" fn call() {
 	api::call(
 		uapi::CallFlags::empty(),
 		callee_addr,
-		0u64,                // How much ref_time to devote for the execution. 0 = all.
-		0u64,                // How much proof_size to devote for the execution. 0 = all.
-		None,                // No deposit limit.
-		&0u64.to_le_bytes(), // Value transferred to the contract.
+		0u64,       // How much ref_time to devote for the execution. 0 = all.
+		0u64,       // How much proof_size to devote for the execution. 0 = all.
+		None,       // No deposit limit.
+		&[0u8; 32], // Value transferred to the contract.
 		callee_input,
 		None,
 	)

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

@@ -19,7 +19,7 @@
 #![no_std]
 #![no_main]
 
-use common::input;
+use common::{input, u256_bytes};
 use uapi::{HostFn, HostFnImpl as api};
 
 #[no_mangle]
@@ -40,10 +40,10 @@ pub extern "C" fn call() {
 	api::call(
 		uapi::CallFlags::from_bits(flags).unwrap(),
 		callee_addr,
-		0u64,                 // How much ref_time to devote for the execution. 0 = all.
-		0u64,                 // How much proof_size to devote for the execution. 0 = all.
-		None,                 // No deposit limit.
-		&value.to_le_bytes(), // Value transferred to the contract.
+		0u64,               // How much ref_time to devote for the execution. 0 = all.
+		0u64,               // How much proof_size to devote for the execution. 0 = all.
+		None,               // No deposit limit.
+		&u256_bytes(value), // Value transferred to the contract.
 		forwarded_input,
 		None,
 	)

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

@@ -43,8 +43,8 @@ pub extern "C" fn call() {
 		callee_addr,
 		ref_time,
 		proof_size,
-		None,                // No deposit limit.
-		&0u64.to_le_bytes(), // value transferred to the contract.
+		None,       // No deposit limit.
+		&[0u8; 32], // value transferred to the contract.
 		forwarded_input,
 		None,
 	)

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

@@ -18,7 +18,7 @@
 #![no_std]
 #![no_main]
 
-use common::input;
+use common::{input, u256_bytes};
 use uapi::{HostFn, HostFnImpl as api, ReturnErrorCode};
 
 #[no_mangle]
@@ -32,7 +32,7 @@ pub extern "C" fn call() {
 
 	// The value to transfer on instantiation and calls. Chosen to be greater than existential
 	// deposit.
-	let value = 32768u64.to_le_bytes();
+	let value = u256_bytes(32768u64);
 	let salt = [0u8; 32];
 
 	// Callee will use the first 4 bytes of the input to return an exit status.

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

@@ -54,10 +54,10 @@ pub extern "C" fn call() {
 		api::call(
 			uapi::CallFlags::ALLOW_REENTRY,
 			&addr,
-			0u64,                // How much ref_time to devote for the execution. 0 = all.
-			0u64,                // How much proof_size to devote for the execution. 0 = all.
-			None,                // No deposit limit.
-			&0u64.to_le_bytes(), // Value transferred to the contract.
+			0u64,       // How much ref_time to devote for the execution. 0 = all.
+			0u64,       // How much proof_size to devote for the execution. 0 = all.
+			None,       // No deposit limit.
+			&[0u8; 32], // Value transferred to the contract.
 			input,
 			None,
 		)

substrate/frame/revive/fixtures/contracts/common/src/lib.rs

@@ -167,3 +167,30 @@ macro_rules! unwrap_output {
 		$host_fn($($arg,)* $output).unwrap();
 	};
 }
+
+/// Call the host function and convert the [u8; 32] output to u64.
+#[macro_export]
+macro_rules! u64_output {
+	($host_fn:path, $($arg:expr),*) => {{
+		let mut buffer = [1u8; 32];
+		$host_fn($($arg,)* &mut buffer);
+		assert!(buffer[8..].iter().all(|&x| x == 0));
+		u64::from_le_bytes(buffer[..8].try_into().unwrap())
+	}};
+}
+
+/// Convert a u64 into a [u8; 32].
+pub const fn u256_bytes(value: u64) -> [u8; 32] {
+	let mut buffer = [0u8; 32];
+	let bytes = value.to_le_bytes();
+
+	buffer[0] = bytes[0];
+	buffer[1] = bytes[1];
+	buffer[2] = bytes[2];
+	buffer[3] = bytes[3];
+	buffer[4] = bytes[4];
+	buffer[5] = bytes[5];
+	buffer[6] = bytes[6];
+	buffer[7] = bytes[7];
+	buffer
+}

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

@@ -33,7 +33,7 @@ pub extern "C" fn call() {
 		buffer,
 		input: [u8; 4],
 		callee: &[u8; 20],
-		deposit_limit: [u8; 8],
+		deposit_limit: &[u8; 32],
 	);
 
 	// create 4 byte of storage before calling
@@ -46,7 +46,7 @@ pub extern "C" fn call() {
 		0u64, // How much ref_time weight to devote for the execution. 0 = all.
 		0u64, // How much proof_size weight to devote for the execution. 0 = all.
 		Some(deposit_limit),
-		&0u64.to_le_bytes(), // Value transferred to the contract.
+		&[0u8; 32], // Value transferred to the contract.
 		input,
 		None,
 	)

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

@@ -19,7 +19,7 @@
 #![no_std]
 #![no_main]
 
-use common::input;
+use common::{input, u256_bytes};
 use uapi::{HostFn, HostFnImpl as api};
 
 #[no_mangle]
@@ -32,10 +32,10 @@ pub extern "C" fn call() {
 	input!(
 		input: [u8; 4],
 		code_hash: &[u8; 32],
-		deposit_limit: [u8; 8],
+		deposit_limit: &[u8; 32],
 	);
 
-	let value = 10_000u64.to_le_bytes();
+	let value = u256_bytes(10_000u64);
 	let salt = [0u8; 32];
 	let mut address = [0u8; 20];
 

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

@@ -52,7 +52,7 @@ pub extern "C" fn call() {
 		0u64, // How much ref_time weight to devote for the execution. 0 = all.
 		0u64, // How much proof_size weight to devote for the execution. 0 = all.
 		None,
-		&0u64.to_le_bytes(), // Value transferred to the contract.
+		&[0u8; 32], // Value transferred to the contract.
 		input,
 		None,
 	)

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

@@ -18,7 +18,7 @@
 #![no_std]
 #![no_main]
 
-use common::output;
+use common::u64_output;
 use uapi::{HostFn, HostFnImpl as api, StorageFlags};
 
 #[no_mangle]
@@ -39,9 +39,8 @@ pub extern "C" fn call() {
 
 	// Assert that `value_transferred` is equal to the value
 	// passed to the `caller` contract: 1337.
-	output!(value_transferred, [0u8; 8], api::value_transferred,);
-	let value_transferred = u64::from_le_bytes(value_transferred[..].try_into().unwrap());
-	assert_eq!(value_transferred, 1337);
+	let value = u64_output!(api::value_transferred,);
+	assert_eq!(value, 1337);
 
 	// Assert that ALICE is the caller of the contract.
 	let mut caller = [0u8; 20];

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

@@ -18,11 +18,11 @@
 #![no_std]
 #![no_main]
 
-use common::input;
+use common::{input, u256_bytes};
 use uapi::{HostFn, HostFnImpl as api, StorageFlags};
 
 const ADDRESS_KEY: [u8; 32] = [0u8; 32];
-const VALUE: [u8; 8] = [0, 0, 1u8, 0, 0, 0, 0, 0];
+const VALUE: [u8; 32] = u256_bytes(65536);
 
 #[no_mangle]
 #[polkavm_derive::polkavm_export]

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

@@ -18,7 +18,7 @@
 #![no_std]
 #![no_main]
 
-use common::output;
+use common::{u256_bytes, u64_output};
 use uapi::{HostFn, HostFnImpl as api};
 
 #[no_mangle]
@@ -28,17 +28,14 @@ pub extern "C" fn deploy() {}
 #[no_mangle]
 #[polkavm_derive::polkavm_export]
 pub extern "C" fn call() {
-	output!(balance, [0u8; 8], api::balance,);
-	let balance = u64::from_le_bytes(balance[..].try_into().unwrap());
-
-	output!(minimum_balance, [0u8; 8], api::minimum_balance,);
-	let minimum_balance = u64::from_le_bytes(minimum_balance[..].try_into().unwrap());
+	let balance = u64_output!(api::balance,);
+	let minimum_balance = u64_output!(api::minimum_balance,);
 
 	// Make the transferred value exceed the balance by adding the minimum balance.
 	let balance = balance + minimum_balance;
 
 	// Try to self-destruct by sending more balance to the 0 address.
 	// The call will fail because a contract transfer has a keep alive requirement.
-	let res = api::transfer(&[0u8; 20], &balance.to_le_bytes());
+	let res = api::transfer(&[0u8; 20], &u256_bytes(balance));
 	assert!(matches!(res, Err(uapi::ReturnErrorCode::TransferFailed)));
 }

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

@@ -25,7 +25,8 @@ use uapi::{HostFn, HostFnImpl as api};
 #[polkavm_derive::polkavm_export]
 pub extern "C" fn deploy() {
 	let buffer = [1u8, 2, 3, 4];
-	api::deposit_event(&[0u8; 0], &buffer);
+	let topics = [[42u8; 32]; 1];
+	api::deposit_event(&topics, &buffer);
 	api::return_value(uapi::ReturnFlags::empty(), &buffer);
 }
 

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

@@ -33,6 +33,7 @@ pub extern "C" fn call() {
 	input!(len: u32,);
 
 	let data = &BUFFER[..len as usize];
+	let topics = [[0u8; 32]; 0];
 
-	api::deposit_event(&[0u8; 0], data);
+	api::deposit_event(&topics, data);
 }

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

@@ -18,7 +18,7 @@
 #![no_std]
 #![no_main]
 
-use common::input;
+use common::{input, u256_bytes};
 use uapi::{HostFn, HostFnImpl as api};
 
 #[no_mangle]
@@ -36,8 +36,8 @@ pub extern "C" fn call() {
 		0u64, // How much ref_time weight to devote for the execution. 0 = all.
 		0u64, /* How much proof_size weight to devote for the execution. 0 =
 		       * all. */
-		None,                     // No deposit limit.
-		&10_000u64.to_le_bytes(), // Value to transfer.
+		None,                   // No deposit limit.
+		&u256_bytes(10_000u64), // Value to transfer.
 		input,
 		None,
 		None,

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

@@ -39,10 +39,10 @@ pub extern "C" fn call() {
 	api::call(
 		uapi::CallFlags::READ_ONLY,
 		callee_addr,
-		0u64,                // How much ref_time to devote for the execution. 0 = all.
-		0u64,                // How much proof_size to devote for the execution. 0 = all.
-		None,                // No deposit limit.
-		&0u64.to_le_bytes(), // Value transferred to the contract.
+		0u64,       // How much ref_time to devote for the execution. 0 = all.
+		0u64,       // How much proof_size to devote for the execution. 0 = all.
+		None,       // No deposit limit.
+		&[0u8; 32], // Value transferred to the contract.
 		callee_input,
 		None,
 	)

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

@@ -43,10 +43,10 @@ pub extern "C" fn call() {
 	api::call(
 		uapi::CallFlags::ALLOW_REENTRY,
 		&addr,
-		0u64,                // How much ref_time to devote for the execution. 0 = all.
-		0u64,                // How much deposit_limit to devote for the execution. 0 = all.
-		None,                // No deposit limit.
-		&0u64.to_le_bytes(), // Value transferred to the contract.
+		0u64,       // How much ref_time to devote for the execution. 0 = all.
+		0u64,       // How much deposit_limit to devote for the execution. 0 = all.
+		None,       // No deposit limit.
+		&[0u8; 32], // Value transferred to the contract.
 		&(calls_left - 1).to_le_bytes(),
 		None,
 	)

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

@@ -42,10 +42,10 @@ pub extern "C" fn call() {
 		api::call(
 			uapi::CallFlags::ALLOW_REENTRY,
 			&addr,
-			0u64,                // How much ref_time to devote for the execution. 0 = all.
-			0u64,                // How much proof_size to devote for the execution. 0 = all.
-			None,                // No deposit limit.
-			&0u64.to_le_bytes(), // Value to transfer.
+			0u64,       // How much ref_time to devote for the execution. 0 = all.
+			0u64,       // How much proof_size to devote for the execution. 0 = all.
+			None,       // No deposit limit.
+			&[0u8; 32], // Value to transfer.
 			&[0u8; 0],
 			None,
 		)