1#   Copyright 1993, 1997, 1998, 2007 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# This file was written by Ian Lance Taylor <ian@cygnus.com>.
17
18# GDB support routines for a board using the MIPS remote debugging
19# protocol.  These are actually pretty generic.
20
21# DejaGnu currently assumes that debugging is being done over the main
22# console port.  It would probably be more convenient for people using
23# IDT boards to permit the debugging port and the connected port to be
24# different, since an IDT board has two ports.  This would require
25# extending some of the tests in a fashion similar to that done for
26# VxWorks, because the test output would appear on the other port,
27# rather than being displayed by gdb.
28
29load_lib remote.exp
30load_lib gdb.exp
31set gdb_prompt "\\(gdb\\)"
32
33#
34# gdb_load -- load a file into the GDB.
35#             Returns a 0 if there was an error,
36#                       1 if it load successfully.
37#
38proc gdb_load { arg } {
39    global verbose
40    global loadpath
41    global loadfile
42    global gdb_prompt
43    global GDB
44    global expect_out
45
46    set loadfile [file tail $arg]
47    set loadpath [file dirname $arg]
48
49    gdb_file_cmd $arg
50
51    if [target_info exists gdb_protocol] {
52	set protocol [target_info gdb_protocol];
53    } else {
54	set protocol "sparclite"
55    }
56
57    if [target_info exists serial] {
58	set targetname [target_info serial];
59	set command "target $protocol [target_info serial]\n";
60    } else {
61	if ![target_info exists netport] {
62	    perror "Need either netport or gdb_serial entry for [target_info name].";
63	    return -1;
64	}
65	set targetname [target_info netport];
66	set command "target $protocol udp [target_info netport]\n";
67    }
68    set timeout 60
69    verbose "Timeout is now $timeout seconds" 2
70    set try_count 0;
71    send_gdb $command;
72    gdb_expect {
73	 -re "Unknown response.*resetting the board.|remote timeout" {
74	    incr try_count;
75	    if { $try_count > 3 } {
76		set try_count 0;
77		reboot_target;
78		sleep 5;
79	    }
80	    sleep 1;
81	    send_gdb $command;
82	    exp_continue;
83	}
84	 -re "Remote target.*$gdb_prompt $" { }
85	 -re ".*SPARClite appears to be alive.*$gdb_prompt $"	{
86	    if $verbose>1 then {
87		send_user "Set target to $targetname\n"
88	    }
89	}
90	 timeout {
91	    perror "Couldn't set SLITE target."
92	    set timeout 10
93	    verbose "Timeout is now $timeout seconds" 2
94	    return -1
95	}
96    }
97
98    if [target_info exists gdb_load_offset] {
99	set offset "[target_info gdb_load_offset]";
100    } else {
101	set offset "";
102    }
103    if { 1 } {
104	if [is_remote host] {
105	    set arg [remote_download host $arg];
106	    if { $arg == "" } {
107		error "download failed"
108		return -1;
109	    }
110	}
111	send_gdb "load $arg $offset\n"
112	verbose "Loading $arg into $GDB" 2
113	set timeout 2400
114	verbose "Timeout is now $timeout seconds" 2
115	gdb_expect {
116	     -re "Loading.*$gdb_prompt $" {
117		verbose "Loaded $arg into $GDB" 1
118		set timeout 30
119		verbose "Timeout is now $timeout seconds" 2
120	    }
121	     -re "$gdb_prompt $"     {
122		if $verbose>1 then {
123		    perror "GDB couldn't load."
124		}
125	    }
126	     timeout {
127		if $verbose>1 then {
128		    perror "Timed out trying to load $arg."
129		}
130	    }
131	}
132    }
133    # Some SPARClite boards automagically do a run after the program is
134    # loaded.
135    if [target_info exists need_monitor_run] {
136	set timeout 10
137	verbose "Timeout is now $timeout seconds, doing monitor run" 2
138	send_gdb "monitor run\n";
139	sleep 2;
140	send_gdb "";
141	gdb_expect {
142	     -re ".*$gdb_prompt $" { verbose "Run command succeded" }
143	     default {
144		perror "error sending monitor run command";
145	    }
146	}
147    } else {
148	sleep 2;
149    }
150
151    if [target_info exists gdb_serial] {
152	set serial [target_info gdb_serial];
153    } else {
154	set serial [target_info serial];
155    }
156    send_gdb "target remote $serial\n"
157    set timeout 60
158    verbose "Timeout is now $timeout seconds" 2
159    gdb_expect {
160	 -re ".*Kill it?.*y or n.*" {
161	    send_gdb "y\n";
162	    exp_continue
163	}
164	 -re ".*$gdb_prompt $"	{
165	    verbose "Set remote target to [target_info serial]" 2
166	}
167	 timeout {
168	    perror "Couldn't set remote target."
169	    set timeout 10
170	    verbose "Timeout is now $timeout seconds" 2
171	    return -1
172	}
173    }
174
175    if [info exists expect_out(buffer)] then {
176	send_log $expect_out(buffer)
177    }
178    return 0
179}
180