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Cursed implementation of allowing missing imports on wasmtime (#4730)

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* Quick and dirty impl.

* Clean up

* Check the signatures.

* Fix tests.

* Apply suggestions from code review

Co-Authored-By: Bastian Köcher <bkchr@users.noreply.github.com>

* Ignore non function members.

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
This commit is contained in:
Sergei Pepyakin
2020-01-25 23:53:08 +01:00
committed by Bastian Köcher
parent e4f3e85585
commit 2421576f91
6 changed files with 215 additions and 81 deletions
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substrate/client/executor/wasmtime/src/util.rs
+18
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@@ -51,6 +51,24 @@ pub fn checked_range(offset: usize, len: usize, max: usize) -> Option<Range<usiz
}
}
/// Convert from a parity wasm FunctionType to wasm interface's Signature.
pub fn convert_parity_wasm_signature(func_ty: &parity_wasm::elements::FunctionType) -> Signature {
fn convert_value_type(val_ty: parity_wasm::elements::ValueType) -> ValueType {
use parity_wasm::elements::ValueType::*;
match val_ty {
I32 => ValueType::I32,
I64 => ValueType::I64,
F32 => ValueType::F32,
F64 => ValueType::F64,
}
}
Signature::new(
func_ty.params().iter().cloned().map(convert_value_type).collect::<Vec<_>>(),
func_ty.return_type().map(convert_value_type),
)
}
/// Convert a wasm_interface Signature into a cranelift_codegen Signature.
pub fn cranelift_ir_signature(signature: Signature, call_conv: &isa::CallConv) -> ir::Signature {
ir::Signature {