able to consume precompiled content

- skip leading paddings in .aot section

src/wamr/wamr.cc

@@ -59,7 +59,7 @@ class Wamr : public WasmVm {
  Wamr() = default;
 
  std::string_view getEngineName() override { return "wamr"; }
- std::string_view getPrecompiledSectionName() override { return ""; }
+ std::string_view getPrecompiledSectionName() override { return "aot"; }
 
  Cloneable cloneable() override { return Cloneable::CompiledBytecode; }
  std::unique_ptr<WasmVm> clone() override;
@@ -121,18 +121,31 @@ class Wamr : public WasmVm {
  std::unordered_map<std::string, WasmFuncPtr> module_functions_;
 };
 
-bool Wamr::load(std::string_view bytecode, std::string_view /*precompiled*/,
+bool Wamr::load(std::string_view bytecode, std::string_view precompiled,
  const std::unordered_map<uint32_t, std::string> & /*function_names*/) {
  store_ = wasm_store_new(engine());
  if (store_ == nullptr) {
  return false;
  }
 
- wasm_byte_vec_t binary = {.size = bytecode.size(),
- .data = (char *)bytecode.data(),
- .num_elems = bytecode.size(),
- .size_of_elem = sizeof(byte_t),
- .lock = nullptr};
+ wasm_byte_vec_t binary = {0};
+ if (precompiled.empty()) {
+ binary.size = bytecode.size();
+ binary.data = (char *)bytecode.data();
+ binary.num_elems = bytecode.size();
+ binary.size_of_elem = sizeof(byte_t);
+ binary.lock = nullptr;
+ } else {
+ // skip leading paddings
+ unsigned padding_count = precompiled[0];
+ precompiled.remove_prefix(padding_count + 1);
+
+ binary.size = precompiled.size();
+ binary.data = (char *)precompiled.data();
+ binary.num_elems = precompiled.size();
+ binary.size_of_elem = sizeof(byte_t);
+ binary.lock = nullptr;
+ }
 
  module_ = wasm_module_new(store_.get(), &binary);
  if (module_ == nullptr) {