Changeset 222625 in webkit for trunk/Source/JavaScriptCore/offlineasm/asm.rb

Timestamp:

Sep 28, 2017, 12:50:05 PM (8 years ago)

Author:

[email protected]

Message:

Enable gigacage on iOS
​https://bugs.webkit.org/show_bug.cgi?id=177586

Reviewed by Michael Saboff.

Source/bmalloc:

This enables Gigacage on iOS using a much smaller cage size. It's not necessary for it to be so
small, but this is a good conservative starting point to start to exercise the code.

• bmalloc/Gigacage.h:

Source/JavaScriptCore:

The hardest part of enabling Gigacage on iOS is that it requires loading global variables whil
executing JS, so the LLInt needs to know how to load from global variables on all platforms that
have Gigacage. So, this teaches ARM64 how to load from global variables.

• offlineasm/arm64.rb:
• offlineasm/asm.rb:
• offlineasm/instructions.rb:

File:

• trunk/Source/JavaScriptCore/offlineasm/asm.rb (modified) (2 diffs)

trunk/Source/JavaScriptCore/offlineasm/asm.rb

@@ -47 +47 @@
         @numLocalLabels = 0
         @numGlobalLabels = 0
+        @deferredActions = []
+        @count = 0
 
         @newlineSpacerState = :none
@@ -74 +76 @@
         end
         putsLastComment
+        @deferredActions.each {
+            | action |
+            action.call()
+        }
         @outp.puts "OFFLINE_ASM_END" if !$emitWinAsm
         @state = :cpp
+    end
+    
+    def deferAction(&proc)
+        @deferredActions << proc
+    end
+    
+    def newUID
+        @count += 1
+        @count
     end