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https://github.com/extism/extism.git
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3da526286e
This PR adds the `kernel` directory which contains a port of the Extism memory allocator compiled to WebAssembly and removes `runtime/src/memory.rs` completely. Being able to re-use memory functions as a WASM module allows us to begin to experiment with porting Extism to new runtimes! This is in a draft state while I'm verifying some of these changes.
38 lines
1.5 KiB
Rust
38 lines
1.5 KiB
Rust
fn main() {
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println!("cargo:rerun-if-changed=src/extism-runtime.wasm");
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let dir = std::path::PathBuf::from(std::env::var("CARGO_MANIFEST_DIR").unwrap());
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// Attempt to build the kernel, this is only done as a convenience when developing the
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// kernel an should not be relied on. When changes are made to the kernel run
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// `sh build.sh` in the `kernel/` directory to ensure it run successfully.
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let _ = std::process::Command::new("bash")
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.args(&["build.sh"])
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.current_dir(dir.join("../kernel"))
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.status()
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.unwrap();
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let fn_macro = "
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#define EXTISM_FUNCTION(N) extern void N(ExtismCurrentPlugin*, const ExtismVal*, ExtismSize, ExtismVal*, ExtismSize, void*)
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#define EXTISM_GO_FUNCTION(N) extern void N(void*, ExtismVal*, ExtismSize, ExtismVal*, ExtismSize, uintptr_t)
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";
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if let Ok(bindings) = cbindgen::Builder::new()
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.with_crate(".")
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.with_language(cbindgen::Language::C)
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.with_no_includes()
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.with_sys_include("stdint.h")
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.with_sys_include("stdbool.h")
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.with_pragma_once(true)
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.with_after_include(fn_macro)
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.rename_item("Size", "ExtismSize")
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.rename_item("PluginIndex", "ExtismPlugin")
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.rename_item("Context", "ExtismContext")
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.rename_item("ValType", "ExtismValType")
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.rename_item("ValUnion", "ExtismValUnion")
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.rename_item("Internal", "ExtismCurrentPlugin")
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.with_style(cbindgen::Style::Type)
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.generate()
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{
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bindings.write_to_file("extism.h");
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}
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}
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