[wasm] Move all V8-specific limitations to wasm-limits.h

src/wasm/wasm-limits.h

+// Copyright 2016 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef V8_WASM_WASM_LIMITS_H_
+#define V8_WASM_WASM_LIMITS_H_
+
+namespace v8 {
+namespace internal {
+namespace wasm {
+
+const size_t kV8MaxWasmSignatures = 10000000;
+const size_t kV8MaxWasmFunctions = 10000000;
+const size_t kV8MaxWasmMemoryPages = 16384;  // = 1 GiB
+const size_t kV8MaxWasmStringSize = 256;
+const size_t kV8MaxWasmModuleSize = 1024 * 1024 * 1024;  // = 1 GiB
+const size_t kV8MaxWasmFunctionSize = 128 * 1024;
+const size_t kV8MaxWasmFunctionLocals = 50000;
+const size_t kV8MaxWasmTableSize = 16 * 1024 * 1024;
+
+const size_t kSpecMaxWasmMemoryPages = 65536;
+
+const uint64_t kWasmMaxHeapOffset =
+    static_cast<uint64_t>(
+        std::numeric_limits<uint32_t>::max())  // maximum base value
+    + std::numeric_limits<uint32_t>::max();    // maximum index value
+
+}  // namespace wasm
+}  // namespace internal
+}  // namespace v8
+
+#endif  // V8_WASM_WASM_LIMITS_H_