1# Copyright 1998-2024 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 24require gdb_trace_common_supports_arch 25 26if [prepare_for_testing "failed to prepare" $executable $srcfile \ 27 [list debug nowarnings nopie]] { 28 return -1 29} 30 31if ![runto_main] { 32 return -1 33} 34 35if {![gdb_target_supports_trace]} { 36 unsupported "current target does not support trace" 37 return 1 38 39} 40 41# 42# test backtraces in trace frames 43# 44 45set testline1 0 46set testline2 0 47set testline3 0 48set testline4 0 49set testline5 0 50set testline6 0 51 52set arg1 1 53set arg2 2 54set arg3 3 55set arg4 4 56set arg5 5 57set arg6 6 58 59set baseline [gdb_find_recursion_test_baseline $srcfile] 60if { $baseline == -1 } { 61 fail "could not find gdb_recursion_test function" 62 return 63} 64 65set return_me 0 66 67gdb_test_multiple "list $baseline, +12" "all tests in this module will fail" { 68 -re "\[\r\n\](\[0-9\]+).*gdbtestline 1 " { 69 set testline1 $expect_out(1,string) 70 exp_continue 71 } 72 -re "\[\r\n\](\[0-9\]+).*gdbtestline 2 " { 73 set testline2 $expect_out(1,string) 74 exp_continue 75 } 76 -re "\[\r\n\](\[0-9\]+).*gdbtestline 3 " { 77 set testline3 $expect_out(1,string) 78 exp_continue 79 } 80 -re "\[\r\n\](\[0-9\]+).*gdbtestline 4 " { 81 set testline4 $expect_out(1,string) 82 exp_continue 83 } 84 -re "\[\r\n\](\[0-9\]+).*gdbtestline 5 " { 85 set testline5 $expect_out(1,string) 86 exp_continue 87 } 88 -re "\[\r\n\](\[0-9\]+).*gdbtestline 6 " { 89 set testline6 $expect_out(1,string) 90 exp_continue 91 } 92 -re ".*$gdb_prompt $" { 93 if { ($testline1 == 0) || ($testline2 == 0) || ($testline3 == 0) || ($testline4 == 0) || ($testline5 == 0) || ($testline6 == 0) } { 94 untested "unexpected testline values" 95 set return_me 1 96all tests in this module will fail." 97 } 98 } 99 default { 100 untested "couldn't match pattern" 101 set return_me 1 102all tests in this module will fail." 103 } 104} 105 106if {$return_me == 1} { 107 return -1 108} 109 110# 111# Setup backtrace experiment. This will involve: 112# 1) a tracepoint where nothing is collected 113# 2) a tracepoint where only regs are collected 114# 3) a tracepoint where regs, locals and args are collected 115# 4) a tracepoint where regs plus some amount of stack are collected. 116# 117 118gdb_delete_tracepoints 119set tdp2 [gdb_gettpnum $testline2] 120set tdp3 [gdb_gettpnum $testline3] 121set tdp4 [gdb_gettpnum $testline4] 122set tdp5 [gdb_gettpnum $testline5] 123set tdp6 [gdb_gettpnum $testline6] 124if { $tdp2 <= 0 || $tdp3 <= 0 || \ 125 $tdp4 <= 0 || $tdp5 <= 0 || $tdp6 <= 0 } then { 126 fail "setting tracepoints failed" 127 return 128} 129 130#gdb_trace_setactions "setup TP to collect FP" \ 131# "$tdp2" \ 132# "collect \$fp" "" 133# 134 135gdb_trace_setactions "8.6: setup TP to collect regs" \ 136 "$tdp3" \ 137 "collect \$regs" "^$" 138 139gdb_trace_setactions "8.6: setup TP to collect regs, args, and locals" \ 140 "$tdp4" \ 141 "collect \$regs, \$args, \$locs" "^$" 142 143gdb_trace_setactions "8.6: setup TP to collect stack mem cast expr" \ 144 "$tdp6" \ 145 "collect \$$fpreg, \(\*\(void \*\*\) \(\$$spreg\)\) @ 128" "^$" 146 147gdb_test_no_output "tstart" "" 148 149gdb_breakpoint "end" qualified 150gdb_test "continue" \ 151 "Continuing.*Breakpoint $decimal, end.*" \ 152 "run trace experiment" 153 154gdb_test_no_output "tstop" "" 155 156proc gdb_backtrace_tdp_1 { msg } { 157 global gdb_prompt 158 159 # We are in a trace frame at which we didn't collect anything 160 # except $PC. Therefore we expect to be able to identify stack 161 # frame #0, but that's about all. In particular we do not expect 162 # to be able to display the function's arguments or locals, and we 163 # do not expect to be able to identify the caller of this function. 164 165 gdb_test "backtrace" \ 166 "#0\[\t \]+gdb_recursion_test.*depth=.*" \ 167 "$msg" 168} 169 170proc gdb_backtrace_tdp_2 { msg } { 171 global gdb_prompt 172 173 # We are in a trace frame at which we collected only the registers 174 # Therefore we expect to be able to identify stack frame #0, but 175 # we don't expect to be able to display its args unles they are 176 # passed in registers (which isn't the case for m68k), and we 177 # don't expect to be able to identify the caller's stack frame. 178 179 gdb_test "backtrace" \ 180 "#0\[\t \]+gdb_recursion_test.*depth=.*" \ 181 "$msg" 182} 183 184proc gdb_backtrace_tdp_3 { msg } { 185 global gdb_prompt 186 187 # We are in a trace frame at which we collected all registers, all 188 # arguments and all locals. This means that the display of 189 # stack frame #0 should be complete (including argument values). 190 191 gdb_test_multiple "backtrace" "$msg" { 192 -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 $" { 193 pass "$msg" 194 } 195 -re "#0\[\t \]+gdb_recursion_test.*depth=Cannot access.*$gdb_prompt $" { 196 fail "$msg (failed to collect arguments)" 197 } 198 } 199} 200 201proc gdb_backtrace_tdp_4 { msg depth traceframe } { 202 global gdb_prompt 203 204 with_test_prefix "traceframe $traceframe" { 205 # We are in a trace frame at which we collected all registers, 206 # plus a sizeable hunk of stack memory. This should enable us to 207 # display at least several stack frames worth of backtrace. We'll 208 # assume that if we can't display at least "depth" levels (with 209 # args), it counts as an error. 210 211 gdb_test_multiple "backtrace" "$msg" { 212 -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 $" { 213 pass "$msg" 214 } 215 -re "#$depth\[\t \].*gdb_recursion_test.*depth=.*$gdb_prompt $" { 216 fail "$msg (args missing from #$depth stack frame)" 217 } 218 -re "#\[0-9\]+\[\t \].*gdb_recursion_test.*depth=.*$gdb_prompt $" { 219 fail "$msg (fewer than $depth stack frames found)" 220 } 221 } 222 223 set output_string0 "" 224 # Match the output of command 'tdump' and save it in 225 # $output_string0. 226 set test "tdump on frame 0" 227 gdb_test_multiple "tdump" $test { 228 -re "tdump\[\r\n\]+(.*)\[\r\n\]+$gdb_prompt $" { 229 set output_string0 $expect_out(1,string) 230 } 231 } 232 233 gdb_test "up" ".*" "" 234 235 # Test that command 'tdump' still works properly when the 236 # selected frame is not the current frame, and save the output 237 # in $output_string1. 238 set test "tdump on frame 1" 239 set output_string1 "" 240 gdb_test_multiple "tdump" $test { 241 -re "tdump\[\r\n\]+(.*)\[\r\n\]+$gdb_prompt $" { 242 set output_string1 $expect_out(1,string) 243 } 244 } 245 246 # Output of 'tdump' on frame 0 and frame 1 should be 247 # identical. 248 gdb_assert ![string compare $output_string0 $output_string1] \ 249 "tdump output" 250 } 251} 252 253# 254# begin backtrace test 255# 256 257set timeout 60 258 259gdb_tfind_test "init: make sure not debugging any trace frame" "none" "-1" 260 261gdb_tfind_test "8.6: find start frame" "start" "0" 262gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 263 "TDP $tdp2:" "printf TDP start" 264gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 1, collect nothing" 265 266gdb_tfind_test "8.6: find frame 1" "1" "1" 267gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 268 "TDP $tdp3:" "printf TDP frame 1" 269gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 1, collect regs" 270 271gdb_tfind_test "8.6: find frame 2" "2" "2" 272gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 273 "TDP $tdp4:" "printf TDP frame 2" 274gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 1, collect args and locals" 275 276 277gdb_tfind_test "8.6: find frame 4" "4" "4" 278gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 279 "TDP $tdp6:" "printf TDP frame 4" 280gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0" 4 281 282gdb_tfind_test "8.6: find frame 5" "5" "5" 283gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 284 "TDP $tdp2:" "printf TDP frame 5" 285gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 2, collect nothing" 286 287gdb_tfind_test "8.6: find frame 6" "6" "6" 288gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 289 "TDP $tdp3:" "printf TDP frame 6" 290gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 2, collect regs" 291 292gdb_tfind_test "8.6: find frame 7" "7" "7" 293gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 294 "TDP $tdp4:" "printf TDP frame 7" 295gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 2, collect args and locals" 296 297 298gdb_tfind_test "8.6: find frame 9" "9" "9" 299gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 300 "TDP $tdp6:" "printf TDP frame 9" 301gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0" 9 302 303gdb_tfind_test "8.6: find frame 10" "10" "10" 304gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 305 "TDP $tdp2:" "printf TDP frame 10" 306gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 3, collect nothing" 307 308gdb_tfind_test "8.6: find frame 11" "11" "11" 309gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 310 "TDP $tdp3:" "printf TDP frame 11" 311gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 3, collect regs" 312 313gdb_tfind_test "8.6: find frame 12" "12" "12" 314gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 315 "TDP $tdp4:" "printf TDP frame 12" 316gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 3, collect args and locals" 317 318 319gdb_tfind_test "8.6: find frame 14" "14" "14" 320gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 321 "TDP $tdp6:" "printf TDP frame 14" 322gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0" 14 323 324gdb_tfind_test "8.6: find frame 15" "15" "15" 325gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 326 "TDP $tdp2:" "printf TDP frame 15" 327gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 4, collect nothing" 328 329gdb_tfind_test "8.6: find frame 16" "16" "16" 330gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 331 "TDP $tdp3:" "printf TDP frame 16" 332gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 4, collect regs" 333 334gdb_tfind_test "8.6: find frame 17" "17" "17" 335gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 336 "TDP $tdp4:" "printf TDP frame 17" 337gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 4, collect args and locals" 338 339 340gdb_tfind_test "8.6: find frame 19" "19" "19" 341gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 342 "TDP $tdp6:" "printf TDP frame 19" 343gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0" 19 344 345gdb_test "printf \"x \%d x\\n\", depth == 3" \ 346 "x 0 x" \ 347 "1.13: trace in recursion: depth not equal to 3" 348 349# Finished! 350gdb_test "tfind none" ".*" 351