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Generate trampolines to call exported functions instead of using libffi (#108)

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* remove codegen.rs

* Add export trampolines and remove libffi

* Remove unused extern crates
This commit is contained in:
Lachlan Sneff
2019-01-22 15:00:27 -08:00
committed by GitHub
parent ee67bf95db
commit 38b0fbf3c5
13 changed files with 300 additions and 1832 deletions
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12
lib/clif-backend/src/module.rs
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@ -1,4 +1,4 @@
use crate::{call::Caller, resolver::FuncResolverBuilder};
use crate::{call::Caller, resolver::FuncResolverBuilder, trampoline::Trampolines};
use cranelift_codegen::{ir, isa};
use cranelift_entity::EntityRef;
use cranelift_wasm;
@ -38,12 +38,11 @@ impl ProtectedCaller for Placeholder {
_module: &ModuleInner,
_func_index: FuncIndex,
_params: &[Value],
_returns: &mut [Value],
_import_backing: &ImportBacking,
_vmctx: *mut vm::Ctx,
_: Token,
) -> RuntimeResult<()> {
Ok(())
) -> RuntimeResult<Vec<Value>> {
Ok(vec![])
}
}
@ -97,7 +96,10 @@ impl Module {
let (func_resolver_builder, handler_data) = FuncResolverBuilder::new(isa, functions)?;
self.module.func_resolver = Box::new(func_resolver_builder.finalize()?);
self.module.protected_caller = Box::new(Caller::new(&self.module, handler_data));
let trampolines = Trampolines::new(isa, &self.module);
self.module.protected_caller =
Box::new(Caller::new(&self.module, handler_data, trampolines));
Ok(self.module)
}