Adjust stack limit again to avoid overflow on 64 bit windows

Also add additional stack check.

R=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10006010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11238 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/bootstrapper.cc

@@ -2295,6 +2295,12 @@ Genesis::Genesis(Isolate* isolate,
   HandleScope scope;
   SaveContext saved_context(isolate);
 
+  // During genesis, the boilerplate for stack overflow won't work until the
+  // environment has been at least partially initialized. Add a stack check
+  // before entering JS code to catch overflow early.
+  StackLimitCheck check(Isolate::Current());
+  if (check.HasOverflowed()) return;
+
   Handle<Context> new_context = Snapshot::NewContextFromSnapshot();
   if (!new_context.is_null()) {
     global_context_ =

src/flag-definitions.h

@@ -312,7 +312,7 @@ DEFINE_bool(break_on_abort, true, "always cause a debug break before aborting")
 // execution.cc
 // Slightly less than 1MB on 64-bit, since Windows' default stack size for
 // the main execution thread is 1MB for both 32 and 64-bit.
-DEFINE_int(stack_size, kPointerSize * 125,
+DEFINE_int(stack_size, kPointerSize * 123,
            "default size of stack region v8 is allowed to use (in kBytes)")
 
 // frames.cc

test/mjsunit/regress/regress-119429.js

@@ -29,7 +29,7 @@
 
 var d = 0;
 function recurse() {
-  if (++d == 25515) { // A magic number just below stack overflow  on ia32
+  if (++d == 25135) { // A magic number just below stack overflow  on ia32
     %DebugBreak();
   }
   recurse();