1# Copyright 1998-2020 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 Michael Snyder (msnyder@cygnus.com) 17 18load_lib "trace-support.exp" 19 20standard_testfile actions.c 21set executable $testfile 22set expfile $testfile.exp 23 24if ![gdb_trace_common_supports_arch] { 25 unsupported "no trace-common.h support for arch" 26 return -1 27} 28 29if [prepare_for_testing "failed to prepare" $executable $srcfile \ 30 [list debug nowarnings nopie]] { 31 return -1 32} 33 34if ![runto_main] { 35 fail "can't run to main to check for trace support" 36 return -1 37} 38 39if { ![gdb_target_supports_trace] } then { 40 unsupported "current target does not support trace" 41 return 1 42 43} 44 45# 46# test backtraces in trace frames 47# 48 49set testline1 0 50set testline2 0 51set testline3 0 52set testline4 0 53set testline5 0 54set testline6 0 55 56set arg1 1 57set arg2 2 58set arg3 3 59set arg4 4 60set arg5 5 61set arg6 6 62 63set baseline [gdb_find_recursion_test_baseline $srcfile] 64if { $baseline == -1 } { 65 fail "could not find gdb_recursion_test function" 66 return 67} 68 69set return_me 0 70 71gdb_test_multiple "list $baseline, +12" "all tests in this module will fail" { 72 -re "\[\r\n\](\[0-9\]+).*gdbtestline 1 " { 73 set testline1 $expect_out(1,string) 74 exp_continue 75 } 76 -re "\[\r\n\](\[0-9\]+).*gdbtestline 2 " { 77 set testline2 $expect_out(1,string) 78 exp_continue 79 } 80 -re "\[\r\n\](\[0-9\]+).*gdbtestline 3 " { 81 set testline3 $expect_out(1,string) 82 exp_continue 83 } 84 -re "\[\r\n\](\[0-9\]+).*gdbtestline 4 " { 85 set testline4 $expect_out(1,string) 86 exp_continue 87 } 88 -re "\[\r\n\](\[0-9\]+).*gdbtestline 5 " { 89 set testline5 $expect_out(1,string) 90 exp_continue 91 } 92 -re "\[\r\n\](\[0-9\]+).*gdbtestline 6 " { 93 set testline6 $expect_out(1,string) 94 exp_continue 95 } 96 -re ".*$gdb_prompt $" { 97 if { ($testline1 == 0) || ($testline2 == 0) || ($testline3 == 0) || ($testline4 == 0) || ($testline5 == 0) || ($testline6 == 0) } { 98 untested "unexpected testline values" 99 set return_me 1 100all tests in this module will fail." 101 } 102 } 103 default { 104 untested "couldn't match pattern" 105 set return_me 1 106all tests in this module will fail." 107 } 108} 109 110if { $return_me == 1 } then { 111 return -1 112} 113 114# 115# Setup backtrace experiment. This will involve: 116# 1) a tracepoint where nothing is collected 117# 2) a tracepoint where only regs are collected 118# 3) a tracepoint where regs, locals and args are collected 119# 4) a tracepoint where regs plus some amount of stack are collected. 120# 121 122gdb_delete_tracepoints 123set tdp2 [gdb_gettpnum $testline2] 124set tdp3 [gdb_gettpnum $testline3] 125set tdp4 [gdb_gettpnum $testline4] 126set tdp5 [gdb_gettpnum $testline5] 127set tdp6 [gdb_gettpnum $testline6] 128if { $tdp2 <= 0 || $tdp3 <= 0 || \ 129 $tdp4 <= 0 || $tdp5 <= 0 || $tdp6 <= 0 } then { 130 fail "setting tracepoints failed" 131 return 132} 133 134#gdb_trace_setactions "setup TP to collect FP" \ 135# "$tdp2" \ 136# "collect \$fp" "" 137# 138 139gdb_trace_setactions "8.6: setup TP to collect regs" \ 140 "$tdp3" \ 141 "collect \$regs" "^$" 142 143gdb_trace_setactions "8.6: setup TP to collect regs, args, and locals" \ 144 "$tdp4" \ 145 "collect \$regs, \$args, \$locs" "^$" 146 147gdb_trace_setactions "8.6: setup TP to collect stack mem cast expr" \ 148 "$tdp6" \ 149 "collect \$$fpreg, \(\*\(void \*\*\) \(\$$spreg\)\) @ 128" "^$" 150 151gdb_test_no_output "tstart" "" 152 153gdb_breakpoint "end" qualified 154gdb_test "continue" \ 155 "Continuing.*Breakpoint $decimal, end.*" \ 156 "run trace experiment" 157 158gdb_test_no_output "tstop" "" 159 160proc gdb_backtrace_tdp_1 { msg } { 161 global gdb_prompt 162 163 # We are in a trace frame at which we didn't collect anything 164 # except $PC. Therefore we expect to be able to identify stack 165 # frame #0, but that's about all. In particular we do not expect 166 # to be able to display the function's arguments or locals, and we 167 # do not expect to be able to identify the caller of this function. 168 169 gdb_test "backtrace" \ 170 "#0\[\t \]+gdb_recursion_test.*depth=.*" \ 171 "$msg" 172} 173 174proc gdb_backtrace_tdp_2 { msg } { 175 global gdb_prompt 176 177 # We are in a trace frame at which we collected only the registers 178 # Therefore we expect to be able to identify stack frame #0, but 179 # we don't expect to be able to display its args unles they are 180 # passed in registers (which isn't the case for m68k), and we 181 # don't expect to be able to identify the caller's stack frame. 182 183 gdb_test "backtrace" \ 184 "#0\[\t \]+gdb_recursion_test.*depth=.*" \ 185 "$msg" 186} 187 188proc gdb_backtrace_tdp_3 { msg } { 189 global gdb_prompt 190 191 # We are in a trace frame at which we collected all registers, all 192 # arguments and all locals. This means that the display of 193 # stack frame #0 should be complete (including argument values). 194 195 gdb_test_multiple "backtrace" "$msg" { 196 -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 $" { 197 pass "$msg" 198 } 199 -re "#0\[\t \]+gdb_recursion_test.*depth=Cannot access.*$gdb_prompt $" { 200 fail "$msg (failed to collect arguments)" 201 } 202 } 203} 204 205proc gdb_backtrace_tdp_4 { msg depth traceframe } { 206 global gdb_prompt 207 208 with_test_prefix "traceframe $traceframe" { 209 # We are in a trace frame at which we collected all registers, 210 # plus a sizeable hunk of stack memory. This should enable us to 211 # display at least several stack frames worth of backtrace. We'll 212 # assume that if we can't display at least "depth" levels (with 213 # args), it counts as an error. 214 215 gdb_test_multiple "backtrace" "$msg" { 216 -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 $" { 217 pass "$msg" 218 } 219 -re "#$depth\[\t \].*gdb_recursion_test.*depth=.*$gdb_prompt $" { 220 fail "$msg (args missing from #$depth stack frame)" 221 } 222 -re "#\[0-9\]+\[\t \].*gdb_recursion_test.*depth=.*$gdb_prompt $" { 223 fail "$msg (fewer than $depth stack frames found)" 224 } 225 } 226 227 set output_string0 "" 228 # Match the output of command 'tdump' and save it in 229 # $output_string0. 230 set test "tdump on frame 0" 231 gdb_test_multiple "tdump" $test { 232 -re "tdump\[\r\n\]+(.*)\[\r\n\]+$gdb_prompt $" { 233 set output_string0 $expect_out(1,string) 234 } 235 } 236 237 gdb_test "up" ".*" "" 238 239 # Test that command 'tdump' still works properly when the 240 # selected frame is not the current frame, and save the output 241 # in $output_string1. 242 set test "tdump on frame 1" 243 set output_string1 "" 244 gdb_test_multiple "tdump" $test { 245 -re "tdump\[\r\n\]+(.*)\[\r\n\]+$gdb_prompt $" { 246 set output_string1 $expect_out(1,string) 247 } 248 } 249 250 # Output of 'tdump' on frame 0 and frame 1 should be 251 # identical. 252 gdb_assert ![string compare $output_string0 $output_string1] \ 253 "tdump output" 254 } 255} 256 257# 258# begin backtrace test 259# 260 261set timeout 60 262 263gdb_tfind_test "init: make sure not debugging any trace frame" "none" "-1" 264 265gdb_tfind_test "8.6: find start frame" "start" "0" 266gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 267 "TDP $tdp2:" "" 268gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 1, collect nothing" 269 270gdb_tfind_test "8.6: find frame 1" "1" "1" 271gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 272 "TDP $tdp3:" "" 273gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 1, collect regs" 274 275gdb_tfind_test "8.6: find frame 2" "2" "2" 276gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 277 "TDP $tdp4:" "" 278gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 1, collect args and locals" 279 280 281gdb_tfind_test "8.6: find frame 4" "4" "4" 282gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 283 "TDP $tdp6:" "" 284gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0" 4 285 286gdb_tfind_test "8.6: find frame 5" "5" "5" 287gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 288 "TDP $tdp2:" "" 289gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 2, collect nothing" 290 291gdb_tfind_test "8.6: find frame 6" "6" "6" 292gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 293 "TDP $tdp3:" "" 294gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 2, collect regs" 295 296gdb_tfind_test "8.6: find frame 7" "7" "7" 297gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 298 "TDP $tdp4:" "" 299gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 2, collect args and locals" 300 301 302gdb_tfind_test "8.6: find frame 9" "9" "9" 303gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 304 "TDP $tdp6:" "" 305gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0" 9 306 307gdb_tfind_test "8.6: find frame 10" "10" "10" 308gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 309 "TDP $tdp2:" "" 310gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 3, collect nothing" 311 312gdb_tfind_test "8.6: find frame 11" "11" "11" 313gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 314 "TDP $tdp3:" "" 315gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 3, collect regs" 316 317gdb_tfind_test "8.6: find frame 12" "12" "12" 318gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 319 "TDP $tdp4:" "" 320gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 3, collect args and locals" 321 322 323gdb_tfind_test "8.6: find frame 14" "14" "14" 324gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 325 "TDP $tdp6:" "" 326gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0" 14 327 328gdb_tfind_test "8.6: find frame 15" "15" "15" 329gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 330 "TDP $tdp2:" "" 331gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 4, collect nothing" 332 333gdb_tfind_test "8.6: find frame 16" "16" "16" 334gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 335 "TDP $tdp3:" "" 336gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 4, collect regs" 337 338gdb_tfind_test "8.6: find frame 17" "17" "17" 339gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 340 "TDP $tdp4:" "" 341gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 4, collect args and locals" 342 343 344gdb_tfind_test "8.6: find frame 19" "19" "19" 345gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 346 "TDP $tdp6:" "" 347gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0" 19 348 349gdb_test "printf \"x \%d x\\n\", depth == 3" \ 350 "x 0 x" \ 351 "1.13: trace in recursion: depth not equal to 3" 352 353# Finished! 354gdb_test "tfind none" ".*" "" 355