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wasm_interp: create a block for each function and get tests working again

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Brian Carroll 2022-12-16 23:58:53 +00:00
parent caedb9060b
commit d51beb073f
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6 changed files with 390 additions and 376 deletions
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21
crates/wasm_interp/src/lib.rs
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@ -9,7 +9,7 @@ pub use instance::Instance;
pub use wasi::{WasiDispatcher, WasiFile};
pub use roc_wasm_module::Value;
use roc_wasm_module::{ValueType, WasmModule};
use roc_wasm_module::ValueType;
pub trait ImportDispatcher {
/// Dispatch a call from WebAssembly to your own code, based on module and function name.
@ -100,22 +100,3 @@ impl From<(ValueType, ValueType)> for Error {
Error::ValueStackType(expected, actual)
}
}
// Determine which function the program counter is in
pub(crate) fn pc_to_fn_index(program_counter: usize, module: &WasmModule<'_>) -> usize {
if module.code.function_offsets.is_empty() {
0
} else {
// Find the first function that starts *after* the given program counter
let next_internal_fn_index = module
.code
.function_offsets
.iter()
.position(|o| *o as usize > program_counter)
.unwrap_or(module.code.function_offsets.len());
// Go back 1
let internal_fn_index = next_internal_fn_index - 1;
// Adjust for imports, whose indices come before the code section
module.import.imports.len() + internal_fn_index
}
}