bochs-2.2.6-triple-fault.patch

diff -u bochs-2.2.6.orig/cpu/exception.cc bochs-2.2.6/cpu/exception.cc
--- bochs-2.2.6.orig/cpu/exception.cc
+++ bochs-2.2.6/cpu/exception.cc
@@ -841,6 +841,13 @@ void BX_CPU_C::exception(unsigned vector
 
   BX_CPU_THIS_PTR errorno++;
   if (BX_CPU_THIS_PTR errorno >= 3) {
+#if BX_GDBSTUB
+    if (bx_dbg.gdbstub_enabled) {
+        fprintf(stderr, "Triple fault: stopping for gdb\n");
+        BX_CPU_THIS_PTR ispanic = 1;
+        longjmp(BX_CPU_THIS_PTR jmp_buf_env, 1);
+    }
+#endif
 #if BX_RESET_ON_TRIPLE_FAULT
     BX_ERROR(("exception(): 3rd (%d) exception with no resolution, shutdown status is %02xh, resetting", vector, DEV_cmos_get_reg(0x0f)));
     debug(BX_CPU_THIS_PTR prev_eip);
@@ -860,6 +867,13 @@ void BX_CPU_C::exception(unsigned vector
 
   /* if 1st was a double fault (software INT?), then shutdown */
   if ( (BX_CPU_THIS_PTR errorno==2) && (BX_CPU_THIS_PTR curr_exception[0]==BX_ET_DOUBLE_FAULT) ) {
+#if BX_GDBSTUB
+    if (bx_dbg.gdbstub_enabled) {
+        fprintf(stderr, "Triple fault: stopping for gdb\n");
+        BX_CPU_THIS_PTR ispanic = 1;
+        longjmp(BX_CPU_THIS_PTR jmp_buf_env, 1);
+    }
+#endif
 #if BX_RESET_ON_TRIPLE_FAULT
     BX_INFO(("exception(): triple fault encountered, shutdown status is %02xh, resetting", DEV_cmos_get_reg(0x0f)));
     debug(BX_CPU_THIS_PTR prev_eip);
diff -u bochs-2.2.6.orig/gdbstub.cc bochs-2.2.6/gdbstub.cc
--- bochs-2.2.6.orig/gdbstub.cc
+++ bochs-2.2.6/gdbstub.cc
@@ -466,19 +466,19 @@ static void debug_loop(void)
                  
                  BX_INFO (("stepping"));
                  stub_trace_flag = 1;
+                 bx_cpu.ispanic = 0;
                  bx_cpu.cpu_loop(-1);
                  DEV_vga_refresh();
                  stub_trace_flag = 0;
                  BX_INFO (("stopped with %x", last_stop_reason));
                  buf[0] = 'S';
-                 if (last_stop_reason == GDBSTUB_EXECUTION_BREAKPOINT ||
-                     last_stop_reason == GDBSTUB_TRACE)
+                 if (last_stop_reason == GDBSTUB_TRACE && !bx_cpu.ispanic)
                    {
                       write_signal(&buf[1], SIGTRAP);
                    }
                  else
                    {
-                      write_signal(&buf[1], SIGTRAP);
+                      write_signal(&buf[1], SIGSEGV);
                    }
                  put_reply(buf);
                  break;