chore: share passive data segments across instances

Signed-off-by: Henry <mail@henrygressmann.de>

Author: explodingcamera

crates/parser/src/conversion.rs

@@ -55,7 +55,7 @@ pub(crate) fn convert_module_data(
     global_types: &[WasmType],
 ) -> Result<tinywasm_types::Data> {
     Ok(tinywasm_types::Data {
-        data: data.data.to_vec().into_boxed_slice(),
+        data: data.data.into(),
         range: data.range,
         kind: match data.kind {
             wasmparser::DataKind::Active { memory_index, offset_expr } => {

crates/tinywasm/src/store/data.rs

@@ -1,11 +1,11 @@
-use alloc::vec::Vec;
+use tinywasm_types::Shared;
 
 /// A WebAssembly Data Instance
 ///
 /// See <https://webassembly.github.io/spec/core/exec/runtime.html#data-instances>
 #[cfg_attr(feature = "debug", derive(Debug))]
 pub(crate) struct DataInstance {
-    pub(crate) data: Option<Vec<u8>>,
+    pub(crate) data: Option<Shared<[u8]>>,
 }
 
 impl DataInstance {

crates/tinywasm/src/store/mod.rs

@@ -747,7 +747,7 @@ impl Store {
                         }
                     }
                 }
-                tinywasm_types::DataKind::Passive => Some(data.data.to_vec()),
+                tinywasm_types::DataKind::Passive => Some(data.data.clone()),
             };
 
             self.state.data.push(DataInstance { data: data_val });

crates/types/src/lib.rs

@@ -750,7 +750,7 @@ impl From<&ImportKind> for ExternalKind {
 #[cfg_attr(feature = "debug", derive(Debug))]
 #[cfg_attr(feature = "archive", derive(serde::Serialize, serde::Deserialize))]
 pub struct Data {
-    pub data: Box<[u8]>,
+    pub data: Shared<[u8]>,
     pub range: Range<u64>,
     pub kind: DataKind,
 }