MIPS usermode debug exceptions (Dave Denholm).

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2209 c046a42c-6fe2-441c-8c8c-71466251a162

linux-user/main.c

@@ -1362,6 +1362,20 @@ void cpu_loop(CPUMIPSState *env)
         case EXCP_INTERRUPT:
             /* just indicate that signals should be handled asap */
             break;
+        case EXCP_DEBUG:
+            {
+                int sig;
+
+                sig = gdb_handlesig (env, TARGET_SIGTRAP);
+                if (sig)
+                  {
+                    info.si_signo = sig;
+                    info.si_errno = 0;
+                    info.si_code = TARGET_TRAP_BRKPT;
+                    queue_signal(info.si_signo, &info);
+                  }
+            }
+            break;
         default:
             //        error:
             fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",