1#   Copyright 1993, 1997, 1998 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 2 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, write to the Free Software
15# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
16
17# This file was written by Ian Lance Taylor <ian@cygnus.com>.
18
19# GDB support routines for a board using the MIPS remote debugging
20# protocol.  These are actually pretty generic.
21
22# DejaGnu currently assumes that debugging is being done over the main
23# console port.  It would probably be more convenient for people using
24# IDT boards to permit the debugging port and the connected port to be
25# different, since an IDT board has two ports.  This would require
26# extending some of the tests in a fashion similar to that done for
27# VxWorks, because the test output would appear on the other port,
28# rather than being displayed by gdb.
29
30load_lib remote.exp
31load_lib gdb.exp
32set gdb_prompt "\\(gdb\\)"
33
34#
35# gdb_load -- load a file into the GDB.
36#             Returns a 0 if there was an error,
37#                       1 if it load successfully.
38#
39proc gdb_load { arg } {
40    global verbose
41    global loadpath
42    global loadfile
43    global gdb_prompt
44    global GDB
45    global expect_out
46
47    set loadfile [file tail $arg]
48    set loadpath [file dirname $arg]
49
50    gdb_file_cmd $arg
51
52    if [target_info exists gdb_protocol] {
53	set protocol [target_info gdb_protocol];
54    } else {
55	set protocol "sparclite"
56    }
57
58    if [target_info exists serial] {
59	set targetname [target_info serial];
60	set command "target $protocol [target_info serial]\n";
61    } else {
62	if ![target_info exists netport] {
63	    perror "Need either netport or gdb_serial entry for [target_info name].";
64	    return -1;
65	}
66	set targetname [target_info netport];
67	set command "target $protocol udp [target_info netport]\n";
68    }
69    set timeout 60
70    verbose "Timeout is now $timeout seconds" 2
71    set try_count 0;
72    send_gdb $command;
73    gdb_expect {
74	 -re "Unknown response.*resetting the board.|remote timeout" {
75	    incr try_count;
76	    if { $try_count > 3 } {
77		set try_count 0;
78		reboot_target;
79		sleep 5;
80	    }
81	    sleep 1;
82	    send_gdb $command;
83	    exp_continue;
84	}
85	 -re "Remote target.*$gdb_prompt $" { }
86	 -re ".*SPARClite appears to be alive.*$gdb_prompt $"	{
87	    if $verbose>1 then {
88		send_user "Set target to $targetname\n"
89	    }
90	}
91	 timeout {
92	    perror "Couldn't set SLITE target."
93	    set timeout 10
94	    verbose "Timeout is now $timeout seconds" 2
95	    return -1
96	}
97    }
98
99    if [target_info exists gdb_load_offset] {
100	set offset "[target_info gdb_load_offset]";
101    } else {
102	set offset "";
103    }
104    if { 1 } {
105	if [is_remote host] {
106	    set arg [remote_download host $arg];
107	    if { $arg == "" } {
108		error "download failed"
109		return -1;
110	    }
111	}
112	send_gdb "load $arg $offset\n"
113	verbose "Loading $arg into $GDB" 2
114	set timeout 2400
115	verbose "Timeout is now $timeout seconds" 2
116	gdb_expect {
117	     -re "Loading.*$gdb_prompt $" {
118		verbose "Loaded $arg into $GDB" 1
119		set timeout 30
120		verbose "Timeout is now $timeout seconds" 2
121	    }
122	     -re "$gdb_prompt $"     {
123		if $verbose>1 then {
124		    perror "GDB couldn't load."
125		}
126	    }
127	     timeout {
128		if $verbose>1 then {
129		    perror "Timed out trying to load $arg."
130		}
131	    }
132	}
133    }
134    # Some SPARClite boards automagically do a run after the program is
135    # loaded.
136    if [target_info exists need_monitor_run] {
137	set timeout 10
138	verbose "Timeout is now $timeout seconds, doing monitor run" 2
139	send_gdb "monitor run\n";
140	sleep 2;
141	send_gdb "";
142	gdb_expect {
143	     -re ".*$gdb_prompt $" { verbose "Run command succeded" }
144	     default {
145		perror "error sending monitor run command";
146	    }
147	}
148    } else {
149	sleep 2;
150    }
151
152    if [target_info exists gdb_serial] {
153	set serial [target_info gdb_serial];
154    } else {
155	set serial [target_info serial];
156    }
157    send_gdb "target remote $serial\n"
158    set timeout 60
159    verbose "Timeout is now $timeout seconds" 2
160    gdb_expect {
161	 -re ".*Kill it?.*y or n.*" {
162	    send_gdb "y\n";
163	    exp_continue
164	}
165	 -re ".*$gdb_prompt $"	{
166	    verbose "Set remote target to [target_info serial]" 2
167	}
168	 timeout {
169	    perror "Couldn't set remote target."
170	    set timeout 10
171	    verbose "Timeout is now $timeout seconds" 2
172	    return -1
173	}
174    }
175
176    if [info exists expect_out(buffer)] then {
177	send_log $expect_out(buffer)
178    }
179    return 0
180}
181