Add feature flag to compile contracts for pallet-revive (#2319)

* hack together RiscV support for ink! -- works!

* fix: various fixes for xcm and pallet-revive-uapi integration (#1)

* fix(revive): apply xcm fix from pallet_contracts

* build(deps): align pallet-revive-uapi dependency

* fix: update pallet-revive-uapi integration

* chore: remove workspace.xml

* fix: improve output type length handling

* fix: various fixes and improvements

* fix(caller): use to_account_id host fn

* chore: update cargo.lock

* Introduce feature flag `revive`

* Cleanup prior commits

* Update changelog

* Debugging faulty `std` import

* Make sure `panic_impl` of `sp-io` is not enabled

* Clean up changes

* Update `Cargo.lock`

* Make `[build.rustflags]` an array

* Replace `panic`'s with `todo`'s

* Revert changes to `Cargo.toml`'s

* Convert spaces to tabs

* Add `caller_is_root`

* Introduce `#[ink::polkadot_derive]` re-export

* Forward `std`

* Configure `sp-io`

* Configure `sp-io`

* Forward `std`

* Remove unused attribute

* Use correct `ErrorCode` enum

* Update test fixtures

* Fix clippy errors

---------

Co-authored-by: Peter White <petras9789@gmail.com>
Co-authored-by: Frank Bell <60948618+evilrobot-01@users.noreply.github.com>

.cargo/config.toml

@@ -1,4 +1,7 @@
 [env]
 # We need to enable `RUSTC_BOOTSTRAP` so that the nightly ink!
 # features still work on stable.
-RUSTC_BOOTSTRAP = "1"
+RUSTC_BOOTSTRAP = "1"
+
+[build]
+rustflags = ["--cfg", "substrate_runtime"]

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Restrict which `cfg` attributes can be used ‒ [#2313](https://github.com/use-ink/ink/pull/2313)
 
 ## Added
+- Add feature flag to compile contracts for `pallet-revive` ‒ [#2318](https://github.com/use-ink/ink/pull/2318)
 - Support for `caller_is_root` - [#2332] (https://github.com/use-ink/ink/pull/2332)
 
 ## Fixed

Cargo.toml

@@ -91,6 +91,8 @@ pallet-contracts = { version = "38.0.0", default-features = false }
 pallet-balances = { version = "39.0.0", default-features = false }
 pallet-timestamp = { version = "37.0.0", default-features = false }
 pallet-contracts-uapi = { version = "12.0.0", default-features = false }
+pallet-revive-uapi = { git = "https://github.com/paritytech/polkadot-sdk", tag = "polkadot-stable2412-rc2", default-features = false }
+# TODO include mock-network for revive
 pallet-contracts-mock-network = { version = "14.0.0", default-features = false }
 sp-externalities = { version = "0.29.0", default-features = false }
 sp-io = { version = "38.0.0", default-features = false }
@@ -101,6 +103,9 @@ sp-runtime = { version = "39.0.2", default-features = false }
 sp-weights = { version = "31.0.0", default-features = false }
 xcm = { package = "staging-xcm", version = "14.2.0", default-features = false }
 
+# PolkaVM dependencies
+polkavm-derive = {  version = "0.17.1", default-features = false }
+
 # Local dependencies
 ink = { version = "=5.1.0", path = "crates/ink", default-features = false }
 ink_allocator = { version = "=5.1.0", path = "crates/allocator", default-features = false }

crates/allocator/src/bump.rs

@@ -28,6 +28,9 @@ const PAGE_SIZE: usize = 64 * 1024;
 
 static mut INNER: Option<InnerAlloc> = None;
 
+#[cfg(target_arch = "riscv32")]
+static mut RISCV_HEAP: [u8; 1024 * 1024] = [0; 1024 * 1024];
+
 /// A bump allocator suitable for use in a Wasm environment.
 pub struct BumpAllocator;
 
@@ -146,15 +149,14 @@ impl InnerAlloc {
                 Some(prev_page * PAGE_SIZE)
             }
         } else if #[cfg(target_arch = "riscv32")] {
-            const fn heap_start() -> usize {
-                // Placeholder value until we specified our riscv VM
-                0x7000_0000
+            fn heap_start() -> usize {
+                unsafe {
+                    RISCV_HEAP.as_mut_ptr() as usize
+                }
             }
 
-            const fn heap_end() -> usize {
-                // Placeholder value until we specified our riscv VM
-                // Let's just assume a cool megabyte of mem for now
-                0x7000_0400
+            fn heap_end() -> usize {
+                Self::heap_start() + unsafe { RISCV_HEAP.len() }
             }
 
             fn request_pages(&mut self, _pages: usize) -> Option<usize> {

crates/e2e/Cargo.toml

@@ -78,3 +78,7 @@ sandbox = [
     "pallet-contracts-mock-network",
     "ink_e2e_macro/sandbox",
 ]
+revive = [
+    "ink/revive",
+    "ink_env/revive"
+]

crates/engine/Cargo.toml

@@ -18,6 +18,7 @@ include = ["Cargo.toml", "src/**/*.rs", "README.md", "LICENSE"]
 ink_primitives = { workspace = true }
 scale = { workspace = true }
 pallet-contracts-uapi = { workspace = true }
+pallet-revive-uapi = { workspace = true }
 derive_more = { workspace = true, features = ["from", "display"] }
 
 sha2 = { workspace = true }
@@ -32,6 +33,7 @@ default = [ "std" ]
 std = [
 	"ink_primitives/std",
 	"scale/std",
-	"secp256k1", 
+	"secp256k1",
 	"derive_more/std"
 ]
+revive = []

crates/engine/src/ext.rs

@@ -31,7 +31,10 @@ use crate::{
         BlockTimestamp,
     },
 };
+#[cfg(not(feature = "revive"))]
 pub use pallet_contracts_uapi::ReturnErrorCode as Error;
+#[cfg(feature = "revive")]
+pub use pallet_revive_uapi::ReturnErrorCode as Error;
 use scale::Encode;
 use std::panic::panic_any;
 
@@ -320,6 +323,7 @@ impl Engine {
         set_output(output, &block_timestamp[..])
     }
 
+    #[cfg(not(feature = "revive"))]
     pub fn gas_left(&self, _output: &mut &mut [u8]) {
         unimplemented!("off-chain environment does not yet support `gas_left`");
     }