bump wamr to 2.1.1 and able to consume precompiled content

- skip leading paddings in .aot section

Signed-off-by: [email protected] <[email protected]>

Author: lum1n0us

bazel/external/wamr.BUILD

@@ -37,6 +37,8 @@ cmake(
             "-DWAMR_BUILD_INTERP=0",
             "-DWAMR_BUILD_JIT=1",
             "-DWAMR_BUILD_SIMD=1",
+            # linux perf. only for jit and aot
+            # "-DWAMR_BUILD_LINUX_PERF=1",
         ],
         "//conditions:default": [
             "-DWAMR_BUILD_AOT=0",

bazel/repositories.bzl

@@ -197,17 +197,18 @@ def proxy_wasm_cpp_host_repositories():
         http_archive,
         name = "com_github_bytecodealliance_wasm_micro_runtime",
         build_file = "@proxy_wasm_cpp_host//bazel/external:wamr.BUILD",
-        # WAMR-1.3.1
-        sha256 = "4e34db792332f385fd479e1265d5eaa56705d7cf7ff3fd7734f536466aa29355",
-        strip_prefix = "wasm-micro-runtime-WAMR-1.3.1",
-        url = "https://github.com/bytecodealliance/wasm-micro-runtime/archive/refs/tags/WAMR-1.3.1.zip",
+        # WAMR-2.1.1
+        sha256 = "a0824762abbcbb3dd6b7bb07530f198ece5d792a12a879bc2a99100590fdb151",
+        strip_prefix = "wasm-micro-runtime-WAMR-2.1.1",
+        url = "https://github.com/bytecodealliance/wasm-micro-runtime/archive/refs/tags/WAMR-2.1.1.zip",
     )
 
     native.bind(
         name = "wamr",
         actual = "@com_github_bytecodealliance_wasm_micro_runtime//:wamr_lib",
     )
 
+    #TODO: switch to the system pre-installed building. still 15.0.7 for sure
     maybe(
         http_archive,
         name = "llvm-15_0_7",

src/wamr/wamr.cc

@@ -59,7 +59,8 @@ class Wamr : public WasmVm {
   Wamr() = default;
 
   std::string_view getEngineName() override { return "wamr"; }
-  std::string_view getPrecompiledSectionName() override { return ""; }
+  // has to use the same name provided to test-tools/append-aot-to-wasm/append_aot_to_wasm.py
+  std::string_view getPrecompiledSectionName() override { return "aot"; }
 
   Cloneable cloneable() override { return Cloneable::CompiledBytecode; }
   std::unique_ptr<WasmVm> clone() override;
@@ -121,18 +122,31 @@ 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) {