T0b1/wasmtime
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

wasmtime: Initial, partial support for externref

Browse Source 
This is enough to get an `externref -> externref` identity function
passing.

However, `externref`s that are dropped by compiled Wasm code are (safely)
leaked. Follow up work will leverage cranelift's stack maps to resolve this
issue.
This commit is contained in:
Nick Fitzgerald
2020-05-22 17:12:45 -07:00
parent 137e182750
commit a8ee0554a9
41 changed files with 545 additions and 376 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
crates/jit/src/compiler.rs
View File

@@ -149,8 +149,10 @@ impl Compiler {
let mut cx = FunctionBuilderContext::new();
let mut trampolines = HashMap::new();
let mut trampoline_relocations = HashMap::new();
for sig in translation.module.local.signatures.values() {
let index = self.signatures.register(sig);
for (wasm_func_ty, native_sig) in translation.module.local.signatures.values() {
let index = self
.signatures
.register(wasm_func_ty.clone(), native_sig.clone());
if trampolines.contains_key(&index) {
continue;
}
@@ -158,7 +160,7 @@ impl Compiler {
&*self.isa,
&mut self.code_memory,
&mut cx,
sig,
native_sig,
std::mem::size_of::<u128>(),
)?;
trampolines.insert(index, trampoline);
@@ -167,7 +169,7 @@ impl Compiler {
// show up be sure to log it in case anyone's listening and there's
// an accidental bug.
if relocations.len() > 0 {
log::info!("relocations found in trampoline for {:?}", sig);
log::info!("relocations found in trampoline for {:?}", native_sig);
trampoline_relocations.insert(index, relocations);
}
}