replace return with pop and unconditional jump

- CPU return stack is incorrect after a stack switch and thus branch prediction always fails for return instructions
dlang · Feb 17, 2013 · b57f924 · b57f924
1 parent c74fd3c
commit b57f924
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/core/thread.d b/src/core/thread.d
@@ -3279,7 +3279,8 @@ private
                 pop EBP;
 
                 // 'return' to complete switch
-                ret;
+                pop ECX;
+                jmp ECX;
             }
         }
         else version( AsmX86_64_Windows )