1 files changed, 48 insertions, 3 deletions
diff --git a/Source/JavaScriptCore/offlineasm/backends.rb b/Source/JavaScriptCore/offlineasm/backends.rb
index 902a764af..274441997 100644
--- a/Source/JavaScriptCore/offlineasm/backends.rb
+++ b/Source/JavaScriptCore/offlineasm/backends.rb
@@ -1,4 +1,4 @@
-# Copyright (C) 2011 Apple Inc. All rights reserved.
+# Copyright (C) 2011, 2016 Apple Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
@@ -23,6 +23,7 @@
 
 require "config"
 require "arm"
+require "arm64"
 require "ast"
 require "x86"
 require "mips"
@@ -32,10 +33,13 @@ require "cloop"
 BACKENDS =
     [
      "X86",
+     "X86_WIN",
      "X86_64",
+     "X86_64_WIN",
      "ARM",
      "ARMv7",
      "ARMv7_TRADITIONAL",
+     "ARM64",
      "MIPS",
      "SH4",
      "C_LOOP"
@@ -49,10 +53,13 @@ BACKENDS =
 WORKING_BACKENDS =
     [
      "X86",
+     "X86_WIN",
      "X86_64",
+     "X86_64_WIN",
      "ARM",
      "ARMv7",
      "ARMv7_TRADITIONAL",
+     "ARM64",
      "MIPS",
      "SH4",
      "C_LOOP"
@@ -60,6 +67,37 @@ WORKING_BACKENDS =
 
 BACKEND_PATTERN = Regexp.new('\\A(' + BACKENDS.join(')|(') + ')\\Z')
 
+$allBackends = {}
+$validBackends = {}
+BACKENDS.each {
+    | backend |
+    $validBackends[backend] = true
+    $allBackends[backend] = true
+}
+
+def includeOnlyBackends(list)
+    newValidBackends = {}
+    list.each {
+        | backend |
+        if $validBackends[backend]
+            newValidBackends[backend] = true
+        end
+    }
+    $validBackends = newValidBackends
+end
+
+def isBackend?(backend)
+    $allBackends[backend]
+end
+
+def isValidBackend?(backend)
+    $validBackends[backend]
+end
+
+def validBackends
+    $validBackends.keys
+end
+
 class Node
     def lower(name)
         begin
@@ -76,7 +114,8 @@ end
 
 class Label
     def lower(name)
-        $asm.putsLabel(self.name[1..-1])
+        $asm.debugAnnotation codeOrigin.debugDirective if $enableDebugAnnotations
+        $asm.putsLabel(self.name[1..-1], @global)
     end
 end
 
@@ -88,8 +127,13 @@ end
 
 class LabelReference
     def asmLabel
-        Assembler.labelReference(name[1..-1])
+        if extern?
+            Assembler.externLabelReference(name[1..-1])
+        else
+            Assembler.labelReference(name[1..-1])
+        end
     end
+
     def cLabel
         Assembler.cLabelReference(name[1..-1])
     end
@@ -99,6 +143,7 @@ class LocalLabelReference
     def asmLabel
         Assembler.localLabelReference("_offlineasm_"+name[1..-1])
     end
+
     def cLabel
         Assembler.cLocalLabelReference("_offlineasm_"+name[1..-1])
     end