aboutsummaryrefslogtreecommitdiff
path: root/gdb/testsuite/gdb.trace/backtrace.exp
blob: ae4e6285b540637f5fe986a5c4ea73225df9ecb5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
#   Copyright 1998, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# This file was written by Michael Snyder (msnyder@cygnus.com)

load_lib "trace-support.exp";

if $tracelevel then {
    strace $tracelevel
}


gdb_exit
gdb_start

set testfile "actions"
set srcfile ${testfile}.c
set binfile $objdir/$subdir/backtrace
if { [gdb_compile "$srcdir/$subdir/$srcfile" $binfile \
	  executable {debug nowarnings}] != "" } {
    untested backtrace.exp
    return -1
}
gdb_load $binfile
gdb_test "tstop"       "" ""
gdb_test "tfind none"  "" ""
runto_main
gdb_reinitialize_dir $srcdir/$subdir

# We generously give ourselves one "pass" if we successfully 
# detect that this test cannot be run on this target!
if { ![gdb_target_supports_trace] } then {
    pass "Current target does not support trace"
    return 1;

}

#
# test backtraces in trace frames
#

set testline1 0
set testline2 0
set testline3 0
set testline4 0
set testline5 0
set testline6 0

set arg1 1
set arg2 2
set arg3 3
set arg4 4
set arg5 5
set arg6 6

set baseline [gdb_find_recursion_test_baseline $srcfile];
if { $baseline == -1 } {
    fail "Could not find gdb_recursion_test function"
    return;
}

set return_me 0

gdb_test_multiple "list $baseline, +12" "all tests in this module will fail" {
    -re "\[\r\n\](\[0-9\]+).*gdbtestline 1 " {
	set testline1 $expect_out(1,string)
	exp_continue
    }
    -re "\[\r\n\](\[0-9\]+).*gdbtestline 2 " {
	set testline2 $expect_out(1,string)
	exp_continue
    }
    -re "\[\r\n\](\[0-9\]+).*gdbtestline 3 " {
	set testline3 $expect_out(1,string)
	exp_continue
    }
    -re "\[\r\n\](\[0-9\]+).*gdbtestline 4 " {
	set testline4 $expect_out(1,string)
	exp_continue
    }
    -re "\[\r\n\](\[0-9\]+).*gdbtestline 5 " {
	set testline5 $expect_out(1,string)
	exp_continue
    }
    -re "\[\r\n\](\[0-9\]+).*gdbtestline 6 " {
	set testline6 $expect_out(1,string)
	exp_continue
    }
    -re ".*$gdb_prompt $" {
	if { ($testline1 == 0) || ($testline2 == 0) || ($testline3 == 0) || ($testline4 == 0) || ($testline5 == 0) || ($testline6 == 0) } {
	    untested backtrace.exp
	    set return_me 1
all tests in this module will fail."
	}
    }
    default {
	    untested backtrace.exp
	    set return_me 1
all tests in this module will fail."
    }
}

if { $return_me == 1 } then {
    return -1;
}

#
# Setup backtrace experiment.  This will involve:
#   1) a tracepoint where nothing is collected
#   2) a tracepoint where only regs are collected
#   3) a tracepoint where regs, locals and args are collected
#   4) a tracepoint where regs plus some amount of stack are collected.
#

gdb_delete_tracepoints
set tdp2 [gdb_gettpnum $testline2]
set tdp3 [gdb_gettpnum $testline3]
set tdp4 [gdb_gettpnum $testline4]
set tdp5 [gdb_gettpnum $testline5]
set tdp6 [gdb_gettpnum $testline6]
if {    $tdp2 <= 0 || $tdp3 <= 0 || \
	$tdp4 <= 0 || $tdp5 <= 0 || $tdp6 <= 0 } then {
    fail "setting tracepoints failed"
    return;
}

#gdb_trace_setactions "setup TP to collect FP" \
#	"$tdp2" \
#	"collect \$fp" ""
#

gdb_trace_setactions "8.6: setup TP to collect regs" \
	"$tdp3" \
	"collect \$regs" "^$"

gdb_trace_setactions "8.6: setup TP to collect regs, args, and locals" \
	"$tdp4" \
	"collect \$regs, \$args, \$locs" "^$"

if [istarget "x86_64-*"] then {
    set fpreg "\$rbp"
    set spreg "\$rsp"
} elseif [istarget "i?86-*"] then {
    set fpreg "\$ebp"
    set spreg "\$esp"
} else {
    set fpreg "\$fp"
    set spreg "\$sp"
}

gdb_trace_setactions "8.6: setup TP to collect stack mem cast expr" \
       "$tdp6" \
       "collect $fpreg, \(\*\(void \*\*\) \($spreg\)\) @ 64" "^$"

gdb_test "tstart" "" ""

gdb_test "break end" "" ""
gdb_test "continue" \
    "Continuing.*Breakpoint $decimal, end.*" \
    "run trace experiment"

gdb_test "tstop" "" ""

proc gdb_backtrace_tdp_1 { msg } {
    global gdb_prompt
    
    # We are in a trace frame at which we didn't collect anything
    # except $PC.  Therefore we expect to be able to identify stack
    # frame #0, but that's about all.  In particular we do not expect
    # to be able to display the function's arguments or locals, and we
    # do not expect to be able to identify the caller of this function.
    
    gdb_test "backtrace" \
	"#0\[\t \]+gdb_recursion_test.*depth=.*" \
	"$msg"
}

proc gdb_backtrace_tdp_2 { msg } {
    global gdb_prompt

    # We are in a trace frame at which we collected only the registers
    # Therefore we expect to be able to identify stack frame #0, but
    # we don't expect to be able to display its args unles they are
    # passed in registers (which isn't the case for m68k), and we
    # don't expect to be able to identify the caller's stack frame.

    gdb_test "backtrace" \
	"#0\[\t \]+gdb_recursion_test.*depth=.*" \
	"$msg"
}

proc gdb_backtrace_tdp_3 { msg } {
    global gdb_prompt

    # We are in a trace frame at which we collected all registers, all
    # arguments and all locals.  This means that the display of
    # stack frame #0 should be complete (including argument values).

    gdb_test_multiple "backtrace" "$msg" {
	-re "#0\[\t \]+gdb_recursion_test.*depth=\[0-9\]+.*q1=\[0-9\]+.*q2=\[0-9\]+.*q3=\[0-9\]+.*q4=\[0-9\]+.*q5=\[0-9\]+.*q6=\[0-9\]+.*$gdb_prompt $" {
	    pass "$msg"
	}
	-re "#0\[\t \]+gdb_recursion_test.*depth=Cannot access.*$gdb_prompt $" {
	    fail "$msg (failed to collect arguments)"
	}
    }
}

proc gdb_backtrace_tdp_4 { msg depth } {
    global gdb_prompt

    # We are in a trace frame at which we collected all registers,
    # plus a sizeable hunk of stack memory.  This should enable us to
    # display at least several stack frames worth of backtrace.  We'll
    # assume that if we can't display at least "depth" levels (with
    # args), it counts as an error.

    gdb_test_multiple "backtrace" "$msg" {
	-re "#$depth\[\t \].*gdb_recursion_test.*depth=\[0-9\]+.*q1=\[0-9\]+.*q2=\[0-9\]+.*q3=\[0-9\]+.*q4=\[0-9\]+.*q5=\[0-9\]+.*q6=\[0-9\]+.*$gdb_prompt $" {
	    pass "$msg"
	}
	-re "#$depth\[\t \].*gdb_recursion_test.*depth=.*$gdb_prompt $" {
	    fail "$msg (args missing from #$depth stack frame)"
	}
	-re "#\[0-9\]+\[\t \].*gdb_recursion_test.*depth=.*$gdb_prompt $" {
	    fail "$msg (fewer than $depth stack frames found)"
	}
    }
}

#
# begin backtrace test
#

set timeout 60

gdb_tfind_test "init: make sure not debugging any trace frame" "none" "-1"

gdb_tfind_test "8.6: find start frame" "start" "0"
gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
	"TDP $tdp2:" ""
gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 1, collect nothing"

gdb_tfind_test "8.6: find frame 1"     "1" "1"
gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
	"TDP $tdp3:" ""
gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 1, collect regs"

gdb_tfind_test "8.6: find frame 2"     "2" "2"
gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
	"TDP $tdp4:" ""
gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 1, collect args and locals"


gdb_tfind_test "8.6: find frame 4"     "4" "4"
gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
	"TDP $tdp6:" ""
gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0"

gdb_tfind_test "8.6: find frame 5"     "5" "5"
gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
	"TDP $tdp2:" ""
gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 2, collect nothing"

gdb_tfind_test "8.6: find frame 6"     "6" "6"
gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
	"TDP $tdp3:" ""
gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 2, collect regs"

gdb_tfind_test "8.6: find frame 7"     "7" "7"
gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
	"TDP $tdp4:" ""
gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 2, collect args and locals"


gdb_tfind_test "8.6: find frame 9"     "9" "9"
gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
	"TDP $tdp6:" ""
gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0"

gdb_tfind_test "8.6: find frame 10"    "10" "10"
gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
	"TDP $tdp2:" ""
gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 3, collect nothing"

gdb_tfind_test "8.6: find frame 11"    "11" "11"
gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
	"TDP $tdp3:" ""
gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 3, collect regs"

gdb_tfind_test "8.6: find frame 12"    "12" "12"
gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
	"TDP $tdp4:" ""
gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 3, collect args and locals"


gdb_tfind_test "8.6: find frame 14"    "14" "14"
gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
	"TDP $tdp6:" ""
gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0"

gdb_tfind_test "8.6: find frame 15"    "15" "15"
gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
	"TDP $tdp2:" ""
gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 4, collect nothing"

gdb_tfind_test "8.6: find frame 16"    "16" "16"
gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
	"TDP $tdp3:" ""
gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 4, collect regs"

gdb_tfind_test "8.6: find frame 17"    "17" "17"
gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
	"TDP $tdp4:" ""
gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 4, collect args and locals"


gdb_tfind_test "8.6: find frame 19"    "19" "19"
gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
	"TDP $tdp6:" ""
gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0"

gdb_test "printf \"x \%d x\\n\", depth == 3" \
	"x 0 x" \
	"1.13: trace in recursion: depth not equal to 3"

# Finished!
gdb_test "tfind none" "" ""