r600_query.c debug

(gdb) p rctx->context.create_query
$4 = (struct pipe_query *(*)(struct pipe_context *, unsigned int)) 0x7fffdc6de29f <r600_create_query>
(gdb) p rctx->context.destroy_query
$5 = (void (*)(struct pipe_context *, struct pipe_query *)) 0x7fffdc6de430 <r600_destroy_query>
(gdb) p rctx->context.begin_query
$6 = (void (*)(struct pipe_context *, struct pipe_query *)) 0x7fffdc6de4ad <r600_begin_query>
(gdb) p rctx->context.end_query
$7 = (void (*)(struct pipe_context *, struct pipe_query *)) 0x7fffdc6de68b <r600_end_query>
(gdb) p rctx->context.get_query_result
$8 = (boolean (*)(struct pipe_context *, struct pipe_query *, boolean, union pipe_query_result
     *)) 0x7fffdc6df073 <r600_get_query_result>
(gdb) p rctx->screen
$9 = (struct r600_screen *) 0x0