- apply patch [ #439314 ] [Patch] Exception 1 (debug) on HALT

by thomas.petazzoni@meridon.com.  Bryce introduced this bug in
  revision 1.9 when split the code into separate #ifdefs for single
  CPU and multiple CPU.  Comments on the patch are:
  > The following patch addresses a bug concerning the exception 1 (debug)
  > which is being raised during HALT under certain conditions.  It
  > appears only on recent versions (1.2.1 or last CVS), and not on
  > version 2000-0104.

bochs/cpu/cpu.cc

@@ -406,6 +406,8 @@ handle_async_event:
   if (BX_CPU_THIS_PTR debug_trap & 0x80000000) {
     // I made up the bitmask above to mean HALT state.
 #if BX_SMP_PROCESSORS==1
+    BX_CPU_THIS_PTR debug_trap = 0; // clear traps for after resume
+    BX_CPU_THIS_PTR inhibit_mask = 0; // clear inhibits for after resume
     // for one processor, pass the time as quickly as possible until
     // an interrupt wakes up the CPU.
     while (1) {