WebAssembly: skip unknown sections, add names

src/wasm/wasm-module.h

Index: src/wasm/wasm-module.h
diff --git a/src/wasm/wasm-module.h b/src/wasm/wasm-module.h
index 510ac3c59f60faa975e1709ab5141fe9bac71acd..cce704f4feeb3cd5b0c566f373769d519319dc20 100644
--- a/src/wasm/wasm-module.h
+++ b/src/wasm/wasm-module.h
@@ -25,22 +25,29 @@ const size_t kMaxStringSize = 256;
 const uint32_t kWasmMagic = 0x6d736100;
 const uint32_t kWasmVersion = 0x0a;
 
-enum WasmSectionDeclCode {
-  kDeclMemory = 0x00,
-  kDeclSignatures = 0x01,
-  kDeclFunctions = 0x02,
-  kDeclGlobals = 0x03,
-  kDeclDataSegments = 0x04,
-  kDeclFunctionTable = 0x05,
-  kDeclEnd = 0x06,
-  kDeclStartFunction = 0x07,
-  kDeclImportTable = 0x08,
-  kDeclExportTable = 0x09,
-  kDeclWLL = 0x11,
+// WebAssembly sections are named as strings in the binary format, but
+// internally V8 uses an enum to handle them.
+//
+// Entries have the form F(enumerator, string).
+#define FOR_EACH_WASM_SECTION_TYPE(F)     \
+  F(kDeclMemory, "memory")                \
+  F(kDeclSignatures, "signatures")        \
+  F(kDeclFunctions, "functions")          \
+  F(kDeclGlobals, "globals")              \
+  F(kDeclDataSegments, "data_segments")   \
+  F(kDeclFunctionTable, "function_table") \
+  F(kDeclEnd, "end")                      \
+  F(kDeclStartFunction, "start_function") \
+  F(kDeclImportTable, "import_table")     \
+  F(kDeclExportTable, "export_table")
+
+enum WasmSectionDeclCode : uint32_t {
+#define F(enumerator, string) enumerator,
+  FOR_EACH_WASM_SECTION_TYPE(F)
+#undef F
+      kMaxModuleSectionCode
 };
 
-static const int kMaxModuleSectionCode = 0x11;
-
 enum WasmFunctionDeclBit {
   kDeclFunctionName = 0x01,
   kDeclFunctionImport = 0x02,