[Qemu-devel] [RFC 2/2] qemu-log: Interrupt the GDB session on guest-errors

[edgar.iglesias@gmail.com]

From: "Edgar E. Iglesias" <edgar.iglesias@xilinx.com>

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
---
 qemu-log.c |   20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/qemu-log.c b/qemu-log.c
index 797f2af..693bc94 100644
--- a/qemu-log.c
+++ b/qemu-log.c
@@ -19,6 +19,7 @@
 
 #include "qemu-common.h"
 #include "qemu/log.h"
+#include "exec/gdbstub.h"
 
 static char *logfilename;
 FILE *qemu_logfile;
@@ -45,6 +46,25 @@ void qemu_log_mask(int mask, const char *fmt, ...)
         vfprintf(qemu_logfile, fmt, ap);
     }
     va_end(ap);
+
+    /*
+     * Break the GDB session (if connected) so that the user can inspect the
+     * guest state.
+     *
+     * TODO: Consider conditionalizing this on a cmdline option.
+     */
+    if (mask & LOG_GUEST_ERROR) {
+        char *msg;
+
+        va_start(ap, fmt);
+        if (vasprintf(&msg, fmt, ap) < 0) {
+            msg = NULL;
+        }
+        va_end(ap);
+
+        gdbserver_break(msg);
+        g_free(msg);
+    }
 }
 
 /* enable or disable low levels log */
-- 
1.7.10.4