[mc] Fix the stack cleaner

The condition was broken and the %rsp limit was too high.

diff --git a/tools/stack-cleaner/clean-stack-filter b/tools/stack-cleaner/clean-stack-filter
index a7c87fe..95a3b52 100755 (executable)
--- a/tools/stack-cleaner/clean-stack-filter
+++ b/tools/stack-cleaner/clean-stack-filter
@@ -26,9 +26,9 @@ sub emit_code {
       # This is a crude hack to disable the stack cleaning on the main
       # stack.  It rellies on the fact that the main stack is high in
       # the address space and the other stacks are in the hap (lower).
       # This is a crude hack to disable the stack cleaning on the main
       # stack.  It rellies on the fact that the main stack is high in
       # the address space and the other stacks are in the hap (lower).

-      print("\tmovq \$0x7ffff7ff8000, %r11\n");
+      print("\tmovq \$0x7fff00000000, %r11\n");

       print("\tcmpq %r11, %rsp\n");
       print("\tcmpq %r11, %rsp\n");

-      print("\tjbe .Lstack_cleaner_done$id\n");
+      print("\tjae .Lstack_cleaner_done$id\n");

 
       # Loop over the stack frame quadwords and zero it:
       print("\tmovabsq \$$qsize, %r11\n");
 
       # Loop over the stack frame quadwords and zero it:
       print("\tmovabsq \$$qsize, %r11\n");