prompt.exp revision 1.6 
1# Copyright (C) 2011-2016 Free Software Foundation, Inc.
2#
3# This program is free software; you can redistribute it and/or modify
4# it under the terms of the GNU General Public License as published by
5# the Free Software Foundation; either version 3 of the License, or
6# (at your option) any later version.
7#
8# This program is distributed in the hope that it will be useful,
9# but WITHOUT ANY WARRANTY; without even the implied warranty of
10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11# GNU General Public License for more details.
12#
13# You should have received a copy of the GNU General Public License
14# along with this program.  If not, see <http://www.gnu.org/licenses/>.
15
16# Specialized subroutines for launching gdb and testing the very first prompt.
17
18
19#
20# start gdb -- start gdb running, prompt procedure
21# this procedure differs from the default in that you must pass 'set height 0',
22# and 'set width 0', yourself in GDBFLAGS, and it has a gdb_prompt_fail variable,
23#
24# uses pass if it sees $gdb_prompt, and fail if it sees $gdb_prompt_fail.
25#
26proc default_prompt_gdb_start { } {
27    global verbose
28    global GDB
29    global INTERNAL_GDBFLAGS GDBFLAGS
30    global gdb_prompt
31    global gdb_prompt_fail
32    global timeout
33    global gdb_spawn_id
34
35    gdb_stop_suppressing_tests
36
37    verbose "Spawning $GDB $INTERNAL_GDBFLAGS $GDBFLAGS"
38
39    if [info exists gdb_spawn_id] {
40	return 0
41    }
42
43    if ![is_remote host] {
44	if { [which $GDB] == 0 } then {
45	    perror "$GDB does not exist."
46	    exit 1
47	}
48    }
49    set res [remote_spawn host "$GDB $INTERNAL_GDBFLAGS $GDBFLAGS [host_info gdb_opts]"]
50    if { $res < 0 || $res == "" } {
51	perror "Spawning $GDB failed."
52	return 1
53    }
54    gdb_expect 360 {
55	-re ".*$gdb_prompt_fail.*$gdb_prompt_fail.*" {
56	    fail "double prompted fail prompt"
57	}
58	-re ".*$gdb_prompt.*$gdb_prompt.*" {
59	    fail "double prompted"
60	}
61	-re "\[\r\n\]$gdb_prompt_fail $" {
62	    fail "GDB initializing first prompt"
63	}
64	-re "\[\r\n\]$gdb_prompt $" {
65	    pass "GDB initializing first prompt"
66	}
67	-re "$gdb_prompt $"	{
68	    perror "GDB never initialized."
69	    return -1
70	}
71	-re "$gdb_prompt_fail $"	{
72	    perror "GDB never initialized."
73	    return -1
74	}
75	timeout	{
76	    perror "(timeout) GDB never initialized after 10 seconds."
77	    remote_close host
78	    return -1
79	}
80    }
81    set gdb_spawn_id $res
82    return 0
83}
84
85#
86# Overridable function. You can override this function in your
87# baseboard file.
88#
89proc prompt_gdb_start { } {
90    default_prompt_gdb_start
91}
92
93