1# Copyright 1998-2015 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 [prepare_for_testing $expfile $executable $srcfile \ 25 [list debug nowarnings]] { 26 untested "failed to prepare for trace tests" 27 return -1 28} 29 30if ![runto_main] { 31 fail "Can't run to main to check for trace support" 32 return -1 33} 34 35if { ![gdb_target_supports_trace] } then { 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 backtrace.exp 95 set return_me 1 96all tests in this module will fail." 97 } 98 } 99 default { 100 untested backtrace.exp 101 set return_me 1 102all tests in this module will fail." 103 } 104} 105 106if { $return_me == 1 } then { 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 143if [is_amd64_regs_target] { 144 set fpreg "\$rbp" 145 set spreg "\$rsp" 146} elseif [is_x86_like_target] { 147 set fpreg "\$ebp" 148 set spreg "\$esp" 149} else { 150 set fpreg "\$fp" 151 set spreg "\$sp" 152} 153 154gdb_trace_setactions "8.6: setup TP to collect stack mem cast expr" \ 155 "$tdp6" \ 156 "collect $fpreg, \(\*\(void \*\*\) \($spreg\)\) @ 64" "^$" 157 158gdb_test_no_output "tstart" "" 159 160gdb_test "break end" ".*" "" 161gdb_test "continue" \ 162 "Continuing.*Breakpoint $decimal, end.*" \ 163 "run trace experiment" 164 165gdb_test_no_output "tstop" "" 166 167proc gdb_backtrace_tdp_1 { msg } { 168 global gdb_prompt 169 170 # We are in a trace frame at which we didn't collect anything 171 # except $PC. Therefore we expect to be able to identify stack 172 # frame #0, but that's about all. In particular we do not expect 173 # to be able to display the function's arguments or locals, and we 174 # do not expect to be able to identify the caller of this function. 175 176 gdb_test "backtrace" \ 177 "#0\[\t \]+gdb_recursion_test.*depth=.*" \ 178 "$msg" 179} 180 181proc gdb_backtrace_tdp_2 { msg } { 182 global gdb_prompt 183 184 # We are in a trace frame at which we collected only the registers 185 # Therefore we expect to be able to identify stack frame #0, but 186 # we don't expect to be able to display its args unles they are 187 # passed in registers (which isn't the case for m68k), and we 188 # don't expect to be able to identify the caller's stack frame. 189 190 gdb_test "backtrace" \ 191 "#0\[\t \]+gdb_recursion_test.*depth=.*" \ 192 "$msg" 193} 194 195proc gdb_backtrace_tdp_3 { msg } { 196 global gdb_prompt 197 198 # We are in a trace frame at which we collected all registers, all 199 # arguments and all locals. This means that the display of 200 # stack frame #0 should be complete (including argument values). 201 202 gdb_test_multiple "backtrace" "$msg" { 203 -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 $" { 204 pass "$msg" 205 } 206 -re "#0\[\t \]+gdb_recursion_test.*depth=Cannot access.*$gdb_prompt $" { 207 fail "$msg (failed to collect arguments)" 208 } 209 } 210} 211 212proc gdb_backtrace_tdp_4 { msg depth traceframe } { 213 global gdb_prompt 214 215 with_test_prefix "traceframe $traceframe" { 216 # We are in a trace frame at which we collected all registers, 217 # plus a sizeable hunk of stack memory. This should enable us to 218 # display at least several stack frames worth of backtrace. We'll 219 # assume that if we can't display at least "depth" levels (with 220 # args), it counts as an error. 221 222 gdb_test_multiple "backtrace" "$msg" { 223 -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 $" { 224 pass "$msg" 225 } 226 -re "#$depth\[\t \].*gdb_recursion_test.*depth=.*$gdb_prompt $" { 227 fail "$msg (args missing from #$depth stack frame)" 228 } 229 -re "#\[0-9\]+\[\t \].*gdb_recursion_test.*depth=.*$gdb_prompt $" { 230 fail "$msg (fewer than $depth stack frames found)" 231 } 232 } 233 234 set output_string0 "" 235 # Match the output of command 'tdump' and save it in 236 # $output_string0. 237 set test "tdump on frame 0" 238 gdb_test_multiple "tdump" $test { 239 -re "tdump\[\r\n\]+(.*)\[\r\n\]+$gdb_prompt $" { 240 set output_string0 $expect_out(1,string) 241 } 242 } 243 244 gdb_test "up" ".*" "" 245 246 # Test that command 'tdump' still works properly when the 247 # selected frame is not the current frame, and save the output 248 # in $output_string1. 249 set test "tdump on frame 1" 250 set output_string1 "" 251 gdb_test_multiple "tdump" $test { 252 -re "tdump\[\r\n\]+(.*)\[\r\n\]+$gdb_prompt $" { 253 set output_string1 $expect_out(1,string) 254 } 255 } 256 257 # Output of 'tdump' on frame 0 and frame 1 should be 258 # identical. 259 gdb_assert ![string compare $output_string0 $output_string1] \ 260 "tdump output" 261 } 262} 263 264# 265# begin backtrace test 266# 267 268set timeout 60 269 270gdb_tfind_test "init: make sure not debugging any trace frame" "none" "-1" 271 272gdb_tfind_test "8.6: find start frame" "start" "0" 273gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 274 "TDP $tdp2:" "" 275gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 1, collect nothing" 276 277gdb_tfind_test "8.6: find frame 1" "1" "1" 278gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 279 "TDP $tdp3:" "" 280gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 1, collect regs" 281 282gdb_tfind_test "8.6: find frame 2" "2" "2" 283gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 284 "TDP $tdp4:" "" 285gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 1, collect args and locals" 286 287 288gdb_tfind_test "8.6: find frame 4" "4" "4" 289gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 290 "TDP $tdp6:" "" 291gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0" 4 292 293gdb_tfind_test "8.6: find frame 5" "5" "5" 294gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 295 "TDP $tdp2:" "" 296gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 2, collect nothing" 297 298gdb_tfind_test "8.6: find frame 6" "6" "6" 299gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 300 "TDP $tdp3:" "" 301gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 2, collect regs" 302 303gdb_tfind_test "8.6: find frame 7" "7" "7" 304gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 305 "TDP $tdp4:" "" 306gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 2, collect args and locals" 307 308 309gdb_tfind_test "8.6: find frame 9" "9" "9" 310gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 311 "TDP $tdp6:" "" 312gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0" 9 313 314gdb_tfind_test "8.6: find frame 10" "10" "10" 315gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 316 "TDP $tdp2:" "" 317gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 3, collect nothing" 318 319gdb_tfind_test "8.6: find frame 11" "11" "11" 320gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 321 "TDP $tdp3:" "" 322gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 3, collect regs" 323 324gdb_tfind_test "8.6: find frame 12" "12" "12" 325gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 326 "TDP $tdp4:" "" 327gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 3, collect args and locals" 328 329 330gdb_tfind_test "8.6: find frame 14" "14" "14" 331gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 332 "TDP $tdp6:" "" 333gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0" 14 334 335gdb_tfind_test "8.6: find frame 15" "15" "15" 336gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 337 "TDP $tdp2:" "" 338gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 4, collect nothing" 339 340gdb_tfind_test "8.6: find frame 16" "16" "16" 341gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 342 "TDP $tdp3:" "" 343gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 4, collect regs" 344 345gdb_tfind_test "8.6: find frame 17" "17" "17" 346gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 347 "TDP $tdp4:" "" 348gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 4, collect args and locals" 349 350 351gdb_tfind_test "8.6: find frame 19" "19" "19" 352gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \ 353 "TDP $tdp6:" "" 354gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0" 19 355 356gdb_test "printf \"x \%d x\\n\", depth == 3" \ 357 "x 0 x" \ 358 "1.13: trace in recursion: depth not equal to 3" 359 360# Finished! 361gdb_test "tfind none" ".*" "" 362