a273add815
This commit slims down the list of builtin intrinsics. It removes the duplicated intrinsics for imported and locally defined items, instead always using one intrinsic for both. This was previously inconsistently applied where some intrinsics got two copies (one for imported one for local) and other intrinsics got only one copy. This does add an extra branch in intrinsics since they need to determine whether something is local or not, but that's generally much lower cost than the intrinsics themselves. This also removes the `memory32_size` intrinsic, instead inlining the codegen directly into the clif IR. This matches what the `table.size` instruction does and removes the need for a few functions on a `wasmtime_runtime::Instance`.
122 lines
4.5 KiB
Rust
122 lines
4.5 KiB
Rust
/// Helper macro to iterate over all builtin functions and their signatures.
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#[macro_export]
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macro_rules! foreach_builtin_function {
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($mac:ident) => {
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$mac! {
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/// Returns an index for wasm's `memory.grow` builtin function.
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memory32_grow(vmctx, i32, i32) -> (i32);
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/// Returns an index for wasm's `table.copy` when both tables are locally
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/// defined.
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table_copy(vmctx, i32, i32, i32, i32, i32) -> ();
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/// Returns an index for wasm's `table.init`.
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table_init(vmctx, i32, i32, i32, i32, i32) -> ();
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/// Returns an index for wasm's `elem.drop`.
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elem_drop(vmctx, i32) -> ();
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/// Returns an index for wasm's `memory.copy`
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memory_copy(vmctx, i32, i32, i32, i32, i32) -> ();
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/// Returns an index for wasm's `memory.fill` instruction.
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memory_fill(vmctx, i32, i32, i32, i32) -> ();
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/// Returns an index for wasm's `memory.init` instruction.
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memory_init(vmctx, i32, i32, i32, i32, i32) -> ();
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/// Returns an index for wasm's `data.drop` instruction.
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data_drop(vmctx, i32) -> ();
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/// Returns an index for Wasm's `table.grow` instruction for `funcref`s.
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table_grow_funcref(vmctx, i32, i32, pointer) -> (i32);
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/// Returns an index for Wasm's `table.grow` instruction for `externref`s.
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table_grow_externref(vmctx, i32, i32, reference) -> (i32);
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/// Returns an index for Wasm's `table.fill` instruction for `externref`s.
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table_fill_externref(vmctx, i32, i32, reference, i32) -> ();
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/// Returns an index for Wasm's `table.fill` instruction for `funcref`s.
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table_fill_funcref(vmctx, i32, i32, pointer, i32) -> ();
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/// Returns an index to drop a `VMExternRef`.
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drop_externref(pointer) -> ();
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/// Returns an index to do a GC and then insert a `VMExternRef` into the
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/// `VMExternRefActivationsTable`.
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activations_table_insert_with_gc(vmctx, reference) -> ();
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/// Returns an index for Wasm's `global.get` instruction for `externref`s.
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externref_global_get(vmctx, i32) -> (reference);
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/// Returns an index for Wasm's `global.get` instruction for `externref`s.
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externref_global_set(vmctx, i32, reference) -> ();
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/// Returns an index for wasm's `memory.atomic.notify` instruction.
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memory_atomic_notify(vmctx, i32, i32, i32) -> (i32);
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/// Returns an index for wasm's `memory.atomic.wait32` instruction.
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memory_atomic_wait32(vmctx, i32, i32, i32, i64) -> (i32);
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/// Returns an index for wasm's `memory.atomic.wait64` instruction.
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memory_atomic_wait64(vmctx, i32, i32, i64, i64) -> (i32);
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/// Invoked when fuel has run out while executing a function.
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out_of_gas(vmctx) -> ();
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}
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};
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}
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/// An index type for builtin functions.
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#[derive(Copy, Clone, Debug)]
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pub struct BuiltinFunctionIndex(u32);
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impl BuiltinFunctionIndex {
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/// Create a new `BuiltinFunctionIndex` from its index
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pub const fn from_u32(i: u32) -> Self {
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Self(i)
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}
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/// Return the index as an u32 number.
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pub const fn index(&self) -> u32 {
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self.0
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}
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}
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macro_rules! declare_indexes {
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(
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$(
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$( #[$attr:meta] )*
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$name:ident( $( $param:ident ),* ) -> ( $( $result:ident ),* );
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)*
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) => {
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impl BuiltinFunctionIndex {
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declare_indexes!(
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@indices;
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0;
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$( $( #[$attr] )* $name; )*
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);
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}
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};
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// Base case: no more indices to declare, so define the total number of
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// function indices.
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(
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@indices;
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$len:expr;
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) => {
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/// Returns the total number of builtin functions.
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pub const fn builtin_functions_total_number() -> u32 {
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$len
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}
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};
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// Recursive case: declare the next index, and then keep declaring the rest of
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// the indices.
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(
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@indices;
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$index:expr;
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$( #[$this_attr:meta] )*
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$this_name:ident;
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$(
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$( #[$rest_attr:meta] )*
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$rest_name:ident;
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)*
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) => {
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$( #[$this_attr] )*
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pub const fn $this_name() -> Self {
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Self($index)
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}
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declare_indexes!(
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@indices;
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($index + 1);
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$( $( #[$rest_attr] )* $rest_name; )*
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);
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}
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}
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foreach_builtin_function!(declare_indexes);
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