Merge branches 'doc', 'multitouch', 'upstream' and 'upstream-fixes' into for-linus

[karo-tx-linux.git] / kernel / debug / gdbstub.c

diff --git a/kernel/debug/gdbstub.c b/kernel/debug/gdbstub.c
index 481a7bd2dfe752267ba3273a1bb8e4a972c17fa5..a11db956dd62c4c5a5fa22699ccd3662a88f00bc 100644 (file)
--- a/kernel/debug/gdbstub.c
+++ b/kernel/debug/gdbstub.c
@@ -1093,3 +1093,33 @@ int gdbstub_state(struct kgdb_state *ks, char *cmd)
        put_packet(remcom_out_buffer);
        return 0;
 }
+
+/**
+ * gdbstub_exit - Send an exit message to GDB
+ * @status: The exit code to report.
+ */
+void gdbstub_exit(int status)
+{
+       unsigned char checksum, ch, buffer[3];
+       int loop;
+
+       buffer[0] = 'W';
+       buffer[1] = hex_asc_hi(status);
+       buffer[2] = hex_asc_lo(status);
+
+       dbg_io_ops->write_char('$');
+       checksum = 0;
+
+       for (loop = 0; loop < 3; loop++) {
+               ch = buffer[loop];
+               checksum += ch;
+               dbg_io_ops->write_char(ch);
+       }
+
+       dbg_io_ops->write_char('#');
+       dbg_io_ops->write_char(hex_asc_hi(checksum));
+       dbg_io_ops->write_char(hex_asc_lo(checksum));
+
+       /* make sure the output is flushed, lest the bootloader clobber it */
+       dbg_io_ops->flush();
+}