mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-07-09 18:47:28 +00:00
Sergey Pepyakin
a3b1b98a90
* Use [alloc_error_handler] instead of oom lang item * Same fix for basic_add * Drive by fix for duplicate generic parameter * Rebuild binaries.
62 lines
1.9 KiB
Rust
62 lines
1.9 KiB
Rust
// Copyright 2017 Parity Technologies (UK) Ltd.
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// This file is part of Polkadot.
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// Polkadot is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Polkadot is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Polkadot. If not, see <http://www.gnu.org/licenses/>.
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//! Defines WASM module logic.
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use core::{intrinsics, panic, alloc};
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use parachain::{self, ValidationResult};
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use parachain::codec::Slicable;
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use super::{HeadData, BlockData};
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#[panic_implementation]
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#[no_mangle]
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pub fn panic(_info: &panic::PanicInfo) -> ! {
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unsafe {
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intrinsics::abort()
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}
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}
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#[alloc_error_handler]
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#[no_mangle]
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pub fn oom(_: alloc::Layout) -> ! {
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unsafe {
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intrinsics::abort();
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}
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}
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#[no_mangle]
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pub extern fn validate(offset: usize, len: usize) -> usize {
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let hash_state = |state: u64| ::tiny_keccak::keccak256(state.encode().as_slice());
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let params = unsafe { ::parachain::load_params(offset, len) };
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let parent_head = HeadData::decode(&mut ¶ms.parent_head[..])
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.expect("invalid parent head format.");
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let block_data = BlockData::decode(&mut ¶ms.block_data[..])
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.expect("invalid block data format.");
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assert_eq!(hash_state(block_data.state), parent_head.post_state, "wrong post-state proof");
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let new_state = block_data.state.saturating_add(block_data.add);
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let new_head = HeadData {
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number: parent_head.number + 1,
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parent_hash: ::tiny_keccak::keccak256(¶ms.parent_head[..]),
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post_state: hash_state(new_state),
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};
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parachain::write_result(ValidationResult { head_data: new_head.encode() })
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}
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