Enumerate all host calls in wasmtime_environ::HostCall
#9743
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This commit is a continuation of the plan of implementing host calls in Pulley through bytecodealliance#9665, bytecodealliance#9675, and bytecodealliance#9693. Here the `Compiler::call_indirect_host` method is updated to take a new type, `HostCall`, which indicates what type of host call is being performed. This is then serialized to a 32-bit integer which will be present in the pulley instruction being generated. This 32-bit integer will then be used to perform a dispatch (the dispatch is left for a future PR with more Pulley integration). This new `HostCall` structure is defined with `BuiltinFunctionIndex` internally. Additionally a new `ComponentBuiltinFunctionIndex` is added to enumerate the same set of indexes for components as well. Along the way the split between component transcoders/builtins were removed and they're now all lumped together in one macro for builtins. (no need to have two separate macros). This new `HostCall` is used to implement the `call_indirect_host` instruction for Pulley to fill out an unimplemented piece of code.
Yessssss |
This was referenced Dec 5, 2024
fitzgen
reviewed
Dec 5, 2024
crates/cranelift/src/func_environ.rs
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| } | ||
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| impl BuiltinFunctions { | ||
| fn new(compiler: &Compiler) -> Self { | ||
| Self { | ||
| types: BuiltinFunctionSignatures::new(compiler), | ||
| builtins: [None; BuiltinFunctionIndex::builtin_functions_total_number() as usize], | ||
| builtins: [None; BuiltinFunctionIndex::max() as usize], |
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Nitpick: If max returns the maximum index then this should be max + 1. If max returns the number of builtins then we should rename it to len or count or something.
Ditto just above.
crates/environ/src/builtin.rs
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| @@ -259,7 +268,7 @@ macro_rules! declare_indexes { | |||
| $len:expr; | |||
| ) => { | |||
| /// Returns the total number of builtin functions. | |||
| pub const fn builtin_functions_total_number() -> u32 { | |||
| pub const fn max() -> u32 { | |||
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Yeah let's call this count or len or something instead of max.
fitzgen
approved these changes
Dec 5, 2024
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This commit is a continuation of the plan of implementing host calls in Pulley through #9665, #9675, and #9693. Here the
Compiler::call_indirect_hostmethod is updated to take a new type,HostCall, which indicates what type of host call is being performed. This is then serialized to a 32-bit integer which will be present in the pulley instruction being generated. This 32-bit integer will then be used to perform a dispatch (the dispatch is left for a future PR with more Pulley integration).This new
HostCallstructure is defined withBuiltinFunctionIndexinternally. Additionally a newComponentBuiltinFunctionIndexis added to enumerate the same set of indexes for components as well. Along the way the split between component transcoders/builtins were removed and they're now all lumped together in one macro for builtins. (no need to have two separate macros).This new
HostCallis used to implement thecall_indirect_hostinstruction for Pulley to fill out an unimplemented piece of code.