deps: v8: backport 1337a34 to v14

Original commit message: deps: V8: cherry-pick 086eecbd96b6 Original commit message: [platform] Add Permission::kNoAccessWillJitLater enum value This value is unused for now. This CL is part 1 of a 3-step dance. Part 2 will be teaching Chrome's Platform implementation to accept the new value. Part 3 will then actually use it in V8. Bug: chromium:1117591 Change-Id: Ie3aed20d4cc58f3def3be2a3a03bba4c3a37bf44 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2450056 Commit-Queue: Jakob Kummerow <[email protected]> Reviewed-by: Michael Lippautz <[email protected]> Cr-Commit-Position: refs/heads/master@{#70335} PR-URL: nodejs#35986 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Richard Lau <[email protected]> Reviewed-By: Michael Dawson <[email protected]> Reviewed-By: Rich Trott <[email protected]> Reviewed-By: Beth Griggs <[email protected]> Reviewed-By: Jiawen Geng <[email protected]>
a60814billy · Apr 2, 2021 · 6a91400 · 6a91400
1 parent 697d6a0
commit 6a91400
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Showing 3 changed files with 9 additions and 2 deletions.
diff --git a/common.gypi b/common.gypi
@@ -36,7 +36,7 @@
 
     # Reset this number to 0 on major V8 upgrades.
     # Increment by one for each non-official patch applied to deps/v8.
-    'v8_embedder_string': '-node.21',
+    'v8_embedder_string': '-node.22',
 
     ##### V8 defaults for Node.js #####
 

diff --git a/deps/v8/include/v8-platform.h b/deps/v8/include/v8-platform.h
@@ -338,7 +338,13 @@ class PageAllocator {
     kReadWrite,
     // TODO(hpayer): Remove this flag. Memory should never be rwx.
     kReadWriteExecute,
-    kReadExecute
+    kReadExecute,
+    // Set this when reserving memory that will later require kReadWriteExecute
+    // permissions. The resulting behavior is platform-specific, currently
+    // this is used to set the MAP_JIT flag on Apple Silicon.
+    // TODO(jkummerow): Remove this when Wasm has a platform-independent
+    // w^x implementation.
+    kNoAccessWillJitLater
   };
 
   /**

diff --git a/deps/v8/test/unittests/heap/unmapper-unittest.cc b/deps/v8/test/unittests/heap/unmapper-unittest.cc
@@ -169,6 +169,7 @@ class TrackingPageAllocator : public ::v8::PageAllocator {
     os << "  page: [" << start << ", " << end << "), access: ";
     switch (access) {
       case PageAllocator::kNoAccess:
+      case PageAllocator::kNoAccessWillJitLater:
         os << "--";
         break;
       case PageAllocator::kRead: