1# Test Framework Driver for GDB driving a ROM monitor (via monitor.c).
2#   Copyright 1995-2021 Free Software Foundation, Inc.
3#
4# This program is free software; you can redistribute it and/or modify
5# it under the terms of the GNU General Public License as published by
6# the Free Software Foundation; either version 3 of the License, or
7# (at your option) any later version.
8#
9# This program is distributed in the hope that it will be useful,
10# but WITHOUT ANY WARRANTY; without even the implied warranty of
11# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12# GNU General Public License for more details.
13#
14# You should have received a copy of the GNU General Public License
15# along with this program.  If not, see <http://www.gnu.org/licenses/>.
16
17#
18# gdb_target_cmd
19# Send gdb the "target" command
20#
21proc gdb_target_cmd { targetname serialport } {
22    global gdb_prompt
23
24    for {set i 1} {$i <= 3} {incr i} {
25	send_gdb "target $targetname $serialport\n"
26	gdb_expect 60 {
27	    -re "A program is being debugged already.*ill it.*y or n. $" {
28		send_gdb "y\n"
29		exp_continue
30	    }
31	    -re "Couldn't establish connection to remote.*$gdb_prompt" {
32		verbose "Connection failed"
33	    }
34	    -re "Remote MIPS debugging.*$gdb_prompt" {
35		verbose "Set target to $targetname"
36		return 0
37	    }
38	    -re "Remote debugging using .*$serialport.*$gdb_prompt" {
39		verbose "Set target to $targetname"
40		return 0
41	    }
42	    -re "Remote target $targetname connected to.*$gdb_prompt" {
43		verbose "Set target to $targetname"
44		return 0
45	    }
46	    -re "Connected to.*$gdb_prompt" {
47		verbose "Set target to $targetname"
48		return 0
49	    }
50	    -re "Ending remote.*$gdb_prompt" { }
51	    -re "Connection refused.*$gdb_prompt" {
52		verbose "Connection refused by remote target.  Pausing, and trying again."
53		sleep 30
54		continue
55	    }
56	    -re "Timeout reading from remote system.*$gdb_prompt" {
57		verbose "Got timeout error from gdb."
58	    }
59	    timeout {
60		send_gdb ""
61		break
62	    }
63	}
64    }
65    return 1
66}
67
68
69
70#
71# gdb_target_monitor
72# Set gdb to target the monitor
73#
74proc gdb_target_monitor { exec_file } {
75    global gdb_prompt
76    global exit_status
77    global timeout
78
79    if [target_info exists gdb_protocol] {
80	set targetname "[target_info gdb_protocol]"
81    } else {
82	perror "No protocol specified for [target_info name]."
83	return -1
84    }
85    if [target_info exists baud] {
86	gdb_test "set serial baud [target_info baud]" "" ""
87    }
88    if [target_info exists binarydownload] {
89	gdb_test "set remotebinarydownload [target_info binarydownload]" "" ""
90    }
91    if { [ target_info exists disable_x_packet ] } {
92	gdb_test "set remote X-packet disable" ""
93    }
94    if { [ target_info exists disable_z_packet ] } {
95	gdb_test "set remote Z-packet disable" ""
96    }
97    if [target_info exists gdb_serial] {
98       set serialport "[target_info gdb_serial]"
99    } elseif [target_info exists netport] {
100	set serialport "[target_info netport]"
101    } else {
102	set serialport "[target_info serial]"
103    }
104
105    for {set j 1} {$j <= 2} {incr j} {
106	if [gdb_file_cmd $exec_file] { return -1 }
107
108	if ![gdb_target_cmd $targetname $serialport] { return 0 }
109
110	gdb_target_exec
111
112	if { $j == 1 && ![reboot_target] } {
113	    break
114	}
115    }
116
117    perror "Couldn't set target for $targetname, port is $serialport."
118    return -1
119}
120
121proc gdb_target_exec { } {
122    gdb_test "target exec" "No executable file now." "" ".*Kill it.*y or n.*" "y"
123
124}
125#
126# gdb_load -- load a file into the debugger.
127#             return a -1 if anything goes wrong.
128#
129proc gdb_load { arg } {
130    global verbose
131    global loadpath
132    global loadfile
133    global GDB
134    global gdb_prompt
135    global timeout
136    global last_gdb_file
137
138    if { $arg == "" } {
139	if [info exists last_gdb_file] {
140	    set arg $last_gdb_file
141	} else {
142	    send_gdb "info files\n"
143	    gdb_expect 30 {
144		-re "Symbols from \"(\[^\"\]+)\"" {
145		    set arg $expect_out(1,string)
146		    exp_continue
147		}
148		-re "Local exec file:\[\r\n\]+\[ \t\]*`(\[^'\]+)'," {
149		    set arg $expect_out(1,string)
150		    exp_continue
151		}
152		-re "$gdb_prompt $" { }
153	    }
154	}
155    }
156
157    set last_gdb_file $arg
158
159    for { set j 1 } { $j <= 2 } {incr j } {
160	if [target_info exists gdb,use_standard_load] {
161	    gdb_target_exec
162	    if ![target_info exists gdb,no_push_conn] {
163		remote_push_conn host
164	    }
165	    set state [remote_ld target $arg]
166	    if ![target_info exists gdb,no_push_conn] {
167		remote_close target
168		remote_pop_conn host
169	    }
170	    if { $state == "pass" } {
171		if [gdb_target_monitor $arg] { return -1 }
172		gdb_test "list -q main" ".*" ""
173		verbose "Loaded $arg into $GDB\n"
174		return 0
175	    }
176	} else {
177
178	    if [gdb_target_monitor $arg] { return -1 }
179
180	    if [is_remote host] {
181		# FIXME: Multiple downloads. bleah.
182		set farg [remote_download host $arg]
183	    } else {
184		set farg $arg
185	    }
186
187	    if { $arg != "" && [target_info exists gdb_sect_offset] } {
188		set textoff [target_info gdb_sect_offset]
189		send_gdb "sect .text $textoff\n"
190		gdb_expect 30 {
191		    -re "(0x\[0-9a-z]+) - 0x\[0-9a-z\]+ is \\.data" {
192			set dataoff $expect_out(1,string)
193			exp_continue
194		    }
195		    -re "(0x\[0-9a-z\]+) - 0x\[0-9a-z\]+ is \\.bss" {
196			set bssoff $expect_out(1,string)
197			exp_continue
198		    }
199		    -re "$gdb_prompt" { }
200		}
201		set dataoff [format 0x%x [expr $dataoff + $textoff]]
202		set bssoff [format 0x%x [expr $bssoff + $textoff]]
203		send_gdb "sect .data $dataoff\n"
204		gdb_expect 30 {
205		    -re "$gdb_prompt" { }
206		}
207		send_gdb "sect .bss $bssoff\n"
208		gdb_expect 30 {
209		    -re "$gdb_prompt" { }
210		}
211	    }
212
213	    verbose "Loading $farg"
214	    if [target_info exists gdb_load_offset] {
215		set command "load $farg [target_info gdb_load_offset]\n"
216	    } else {
217		set command "load $farg\n"
218	    }
219	    if [target_info exists gdb_load_timeout] {
220		set loadtimeout [target_info gdb_load_timeout]
221	    } else {
222		set loadtimeout 1600
223	    }
224
225	    if [is_remote target] {
226		set oldremotetimeout [get_remotetimeout]
227		set_remotetimeout $loadtimeout
228	    }
229
230	    set load_ok 0
231	    send_gdb $command
232	    gdb_expect $loadtimeout {
233		-re "\[Ff\]ailed.*$gdb_prompt $" {
234		    verbose "load failed"
235		}
236		-re "Timeout reading from remote.*$gdb_prompt" {
237		}
238		-re "$gdb_prompt $" {
239		    verbose "Loaded $farg into $GDB\n"
240		    set load_ok 1
241		}
242		timeout {
243		    if { $verbose > 1 } {
244			perror "Timed out trying to load $farg."
245		    }
246		}
247	    }
248
249	    if [is_remote target] {
250		set_remotetimeout $oldremotetimeout
251	    }
252
253	    if { $load_ok == 1 } {
254		return 0
255	    }
256	}
257
258	# Make sure we don't have an open connection to the target.
259	gdb_target_exec
260
261	if { $j == 1 } {
262	    if { ![reboot_target] } {
263		break
264	    }
265	}
266    }
267    perror "Couldn't load file into GDB."
268    return -1
269}
270