deps: update V8 to 6.5.254.31

PR-URL: https://github.com/nodejs/node/pull/18453
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Yang Guo <yangguo@chromium.org>
Reviewed-By: Ali Ijaz Sheikh <ofrobots@google.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

1 files changed, 83 insertions, 0 deletions

diff --git a/deps/v8/src/wasm/wasm-constants.h b/deps/v8/src/wasm/wasm-constants.h
new file mode 100644
index 0000000000..5e7ce1e4f5
--- /dev/null
+++ b/deps/v8/src/wasm/wasm-constants.h
@@ -0,0 +1,83 @@
+// Copyright 2015 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_CONSTANTS_H_
+#define V8_WASM_CONSTANTS_H_
+
+namespace v8 {
+namespace internal {
+namespace wasm {
+
+// Binary encoding of the module header.
+constexpr uint32_t kWasmMagic = 0x6d736100;
+constexpr uint32_t kWasmVersion = 0x01;
+
+// Binary encoding of local types.
+enum ValueTypeCode : uint8_t {
+  kLocalVoid = 0x40,
+  kLocalI32 = 0x7f,
+  kLocalI64 = 0x7e,
+  kLocalF32 = 0x7d,
+  kLocalF64 = 0x7c,
+  kLocalS128 = 0x7b
+};
+// Binary encoding of other types.
+constexpr uint8_t kWasmFunctionTypeCode = 0x60;
+constexpr uint8_t kWasmAnyFunctionTypeCode = 0x70;
+
+// Binary encoding of import/export kinds.
+enum ImportExportKindCode : uint8_t {
+  kExternalFunction = 0,
+  kExternalTable = 1,
+  kExternalMemory = 2,
+  kExternalGlobal = 3
+};
+
+// Binary encoding of maximum and shared flags for memories.
+enum MaximumFlag : uint8_t { kNoMaximumFlag = 0, kHasMaximumFlag = 1 };
+
+enum MemoryFlags : uint8_t {
+  kNoMaximum = 0,
+  kMaximum = 1,
+  kSharedNoMaximum = 2,
+  kSharedAndMaximum = 3
+};
+
+// Binary encoding of sections identifiers.
+enum SectionCode : int8_t {
+  kUnknownSectionCode = 0,     // code for unknown sections
+  kTypeSectionCode = 1,        // Function signature declarations
+  kImportSectionCode = 2,      // Import declarations
+  kFunctionSectionCode = 3,    // Function declarations
+  kTableSectionCode = 4,       // Indirect function table and other tables
+  kMemorySectionCode = 5,      // Memory attributes
+  kGlobalSectionCode = 6,      // Global declarations
+  kExportSectionCode = 7,      // Exports
+  kStartSectionCode = 8,       // Start function declaration
+  kElementSectionCode = 9,     // Elements section
+  kCodeSectionCode = 10,       // Function code
+  kDataSectionCode = 11,       // Data segments
+  kNameSectionCode = 12,       // Name section (encoded as a string)
+  kExceptionSectionCode = 13,  // Exception section
+
+  // Helper values
+  kFirstSectionInModule = kTypeSectionCode,
+  kLastKnownModuleSection = kExceptionSectionCode,
+};
+
+// Binary encoding of name section kinds.
+enum NameSectionKindCode : uint8_t { kModule = 0, kFunction = 1, kLocal = 2 };
+
+constexpr uint32_t kWasmPageSize = 0x10000;
+constexpr int kInvalidExceptionTag = -1;
+
+// TODO(wasm): Wrap WasmCodePosition in a struct.
+using WasmCodePosition = int;
+constexpr WasmCodePosition kNoCodePosition = -1;
+
+}  // namespace wasm
+}  // namespace internal
+}  // namespace v8
+
+#endif  // V8_WASM_CONSTANTS_H_