gdb/testsuite/gdb.trace/backtrace.exp

   1 #   Copyright 1998, 2007, 2008, 2009, 2010 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
  18 load_lib "trace-support.exp";
  19
  20 if $tracelevel then {
  21     strace $tracelevel
  22 }
  23
  24 set prms_id 0
  25 set bug_id 0
  26
  27 gdb_exit
  28 gdb_start
  29
  30 set testfile "actions"
  31 set srcfile ${testfile}.c
  32 set binfile $objdir/$subdir/backtrace
  33 if { [gdb_compile "$srcdir/$subdir/$srcfile" $binfile \
  34           executable {debug nowarnings}] != "" } {
  35     untested backtrace.exp
  36     return -1
  37 }
  38 gdb_load $binfile
  39 gdb_test "tstop"       "" ""
  40 gdb_test "tfind none"  "" ""
  41 runto_main
  42 gdb_reinitialize_dir $srcdir/$subdir
  43
  44 # We generously give ourselves one "pass" if we successfully
  45 # detect that this test cannot be run on this target!
  46 if { ![gdb_target_supports_trace] } then {
  47     pass "Current target does not support trace"
  48     return 1;
  49
  50 }
  51
  52 #
  53 # test backtraces in trace frames
  54 #
  55
  56 set testline1 0
  57 set testline2 0
  58 set testline3 0
  59 set testline4 0
  60 set testline5 0
  61 set testline6 0
  62
  63 set arg1 1
  64 set arg2 2
  65 set arg3 3
  66 set arg4 4
  67 set arg5 5
  68 set arg6 6
  69
  70 set baseline [gdb_find_recursion_test_baseline $srcfile];
  71 if { $baseline == -1 } {
  72     fail "Could not find gdb_recursion_test function"
  73     return;
  74 }
  75
  76 send_gdb "list $baseline, +12\n"
  77 gdb_expect {
  78     -re "\[\r\n\](\[0-9\]+).*gdbtestline 1 " {
  79         set testline1 $expect_out(1,string)
  80         exp_continue
  81     }
  82     -re "\[\r\n\](\[0-9\]+).*gdbtestline 2 " {
  83         set testline2 $expect_out(1,string)
  84         exp_continue
  85     }
  86     -re "\[\r\n\](\[0-9\]+).*gdbtestline 3 " {
  87         set testline3 $expect_out(1,string)
  88         exp_continue
  89     }
  90     -re "\[\r\n\](\[0-9\]+).*gdbtestline 4 " {
  91         set testline4 $expect_out(1,string)
  92         exp_continue
  93     }
  94     -re "\[\r\n\](\[0-9\]+).*gdbtestline 5 " {
  95         set testline5 $expect_out(1,string)
  96         exp_continue
  97     }
  98     -re "\[\r\n\](\[0-9\]+).*gdbtestline 6 " {
  99         set testline6 $expect_out(1,string)
 100         exp_continue
 101     }
 102     -re ".*$gdb_prompt $" {
 103         if { ($testline1 == 0) || ($testline2 == 0) || ($testline3 == 0) || ($testline4 == 0) || ($testline5 == 0) || ($testline6 == 0) } {
 104             untested backtrace.exp
 105             return -1
 106 all tests in this module will fail."
 107         }
 108     }
 109     default {
 110             untested backtrace.exp
 111             return -1
 112 all tests in this module will fail."
 113     }
 114 }
 115
 116 #
 117 # Setup backtrace experiment.  This will involve:
 118 #   1) a tracepoint where nothing is collected
 119 #   2) a tracepoint where only regs are collected
 120 #   3) a tracepoint where regs, locals and args are collected
 121 #   4) a tracepoint where regs plus some amount of stack are collected.
 122 #
 123
 124 gdb_delete_tracepoints
 125 set tdp2 [gdb_gettpnum $testline2]
 126 set tdp3 [gdb_gettpnum $testline3]
 127 set tdp4 [gdb_gettpnum $testline4]
 128 set tdp5 [gdb_gettpnum $testline5]
 129 set tdp6 [gdb_gettpnum $testline6]
 130 if {    $tdp2 <= 0 || $tdp3 <= 0 || \
 131         $tdp4 <= 0 || $tdp5 <= 0 || $tdp6 <= 0 } then {
 132     fail "setting tracepoints failed"
 133     return;
 134 }
 135
 136 #gdb_trace_setactions "setup TP to collect FP" \
 137 #       "$tdp2" \
 138 #       "collect \$fp" ""
 139 #
 140
 141 gdb_trace_setactions "8.6: setup TP to collect regs" \
 142         "$tdp3" \
 143         "collect \$regs" "^$"
 144
 145 gdb_trace_setactions "8.6: setup TP to collect regs, args, and locals" \
 146         "$tdp4" \
 147         "collect \$regs, \$args, \$locs" "^$"
 148
 149 if [istarget "x86_64-*"] then {
 150     set fpreg "\$rbp"
 151     set spreg "\$rsp"
 152 } elseif [istarget "i?86-*"] then {
 153     set fpreg "\$ebp"
 154     set spreg "\$esp"
 155 } else {
 156     set fpreg "\$fp"
 157     set spreg "\$sp"
 158 }
 159
 160 gdb_trace_setactions "8.6: setup TP to collect stack mem cast expr" \
 161        "$tdp6" \
 162        "collect $fpreg, \(\*\(void \*\*\) \($spreg\)\) @ 64" "^$"
 163
 164 gdb_test "tstart" "" ""
 165
 166 gdb_test "break end" "" ""
 167 gdb_test "continue" \
 168     "Continuing.*Breakpoint $decimal, end.*" \
 169     "run trace experiment"
 170
 171 gdb_test "tstop" "" ""
 172
 173 proc gdb_backtrace_tdp_1 { msg } {
 174     global gdb_prompt
 175
 176     # We are in a trace frame at which we didn't collect anything
 177     # except $PC.  Therefore we expect to be able to identify stack
 178     # frame #0, but that's about all.  In particular we do not expect
 179     # to be able to display the function's arguments or locals, and we
 180     # do not expect to be able to identify the caller of this function.
 181
 182     send_gdb "backtrace\n"
 183     gdb_expect {
 184         -re "#0\[\t \]+gdb_recursion_test.*depth=.*$gdb_prompt $" {
 185             pass "$msg"
 186         }
 187         -re ".*$gdb_prompt $" {
 188             fail "$msg"
 189         }
 190         timeout { fail "$msg (timeout)" }
 191     }
 192 }
 193
 194 proc gdb_backtrace_tdp_2 { msg } {
 195     global gdb_prompt
 196
 197     # We are in a trace frame at which we collected only the registers
 198     # Therefore we expect to be able to identify stack frame #0, but
 199     # we don't expect to be able to display its args unles they are
 200     # passed in registers (which isn't the case for m68k), and we
 201     # don't expect to be able to identify the caller's stack frame.
 202
 203     send_gdb "backtrace\n"
 204     gdb_expect {
 205         -re "#0\[\t \]+gdb_recursion_test.*depth=.*$gdb_prompt $" {
 206             pass "$msg"
 207         }
 208         -re ".*$gdb_prompt $" {
 209             fail "$msg"
 210         }
 211         timeout { fail "$msg (timeout)" }
 212     }
 213 }
 214
 215 proc gdb_backtrace_tdp_3 { msg } {
 216     global gdb_prompt
 217
 218     # We are in a trace frame at which we collected all registers, all
 219     # arguments and all locals.  This means that the display of
 220     # stack frame #0 should be complete (including argument values).
 221
 222     send_gdb "backtrace\n"
 223     gdb_expect {
 224         -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 $" {
 225             pass "$msg"
 226         }
 227         -re "#0\[\t \]+gdb_recursion_test.*depth=Cannot access.*$gdb_prompt $" {
 228             fail "$msg (failed to collect arguments)"
 229         }
 230         -re ".*$gdb_prompt $" {
 231             fail "$msg"
 232         }
 233         timeout { fail "$msg (timeout)" }
 234     }
 235 }
 236
 237 proc gdb_backtrace_tdp_4 { msg depth } {
 238     global gdb_prompt
 239
 240     # We are in a trace frame at which we collected all registers,
 241     # plus a sizeable hunk of stack memory.  This should enable us to
 242     # display at least several stack frames worth of backtrace.  We'll
 243     # assume that if we can't display at least "depth" levels (with
 244     # args), it counts as an error.
 245
 246     send_gdb "backtrace\n"
 247     gdb_expect {
 248         -re "#$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 $" {
 249             pass "$msg"
 250         }
 251         -re "#$depth\[\t \].*gdb_recursion_test.*depth=.*$gdb_prompt $" {
 252             fail "$msg (args missing from #$depth stack frame)"
 253         }
 254         -re "#\[0-9\]+\[\t \].*gdb_recursion_test.*depth=.*$gdb_prompt $" {
 255             fail "$msg (fewer than $depth stack frames found)"
 256         }
 257         -re ".*$gdb_prompt $" {
 258             fail "$msg"
 259         }
 260         timeout { fail "$msg (timeout)" }
 261     }
 262 }
 263
 264 #
 265 # begin backtrace test
 266 #
 267
 268 set timeout 60
 269
 270 gdb_tfind_test "init: make sure not debugging any trace frame" "none" "-1"
 271
 272 gdb_tfind_test "8.6: find start frame" "start" "0"
 273 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 274         "TDP $tdp2:" ""
 275 gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 1, collect nothing"
 276
 277 gdb_tfind_test "8.6: find frame 1"     "1" "1"
 278 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 279         "TDP $tdp3:" ""
 280 gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 1, collect regs"
 281
 282 gdb_tfind_test "8.6: find frame 2"     "2" "2"
 283 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 284         "TDP $tdp4:" ""
 285 gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 1, collect args and locals"
 286
 287
 288 gdb_tfind_test "8.6: find frame 4"     "4" "4"
 289 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 290         "TDP $tdp6:" ""
 291 gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0"
 292
 293 gdb_tfind_test "8.6: find frame 5"     "5" "5"
 294 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 295         "TDP $tdp2:" ""
 296 gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 2, collect nothing"
 297
 298 gdb_tfind_test "8.6: find frame 6"     "6" "6"
 299 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 300         "TDP $tdp3:" ""
 301 gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 2, collect regs"
 302
 303 gdb_tfind_test "8.6: find frame 7"     "7" "7"
 304 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 305         "TDP $tdp4:" ""
 306 gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 2, collect args and locals"
 307
 308
 309 gdb_tfind_test "8.6: find frame 9"     "9" "9"
 310 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 311         "TDP $tdp6:" ""
 312 gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0"
 313
 314 gdb_tfind_test "8.6: find frame 10"    "10" "10"
 315 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 316         "TDP $tdp2:" ""
 317 gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 3, collect nothing"
 318
 319 gdb_tfind_test "8.6: find frame 11"    "11" "11"
 320 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 321         "TDP $tdp3:" ""
 322 gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 3, collect regs"
 323
 324 gdb_tfind_test "8.6: find frame 12"    "12" "12"
 325 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 326         "TDP $tdp4:" ""
 327 gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 3, collect args and locals"
 328
 329
 330 gdb_tfind_test "8.6: find frame 14"    "14" "14"
 331 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 332         "TDP $tdp6:" ""
 333 gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0"
 334
 335 gdb_tfind_test "8.6: find frame 15"    "15" "15"
 336 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 337         "TDP $tdp2:" ""
 338 gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 4, collect nothing"
 339
 340 gdb_tfind_test "8.6: find frame 16"    "16" "16"
 341 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 342         "TDP $tdp3:" ""
 343 gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 4, collect regs"
 344
 345 gdb_tfind_test "8.6: find frame 17"    "17" "17"
 346 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 347         "TDP $tdp4:" ""
 348 gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 4, collect args and locals"
 349
 350
 351 gdb_tfind_test "8.6: find frame 19"    "19" "19"
 352 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 353         "TDP $tdp6:" ""
 354 gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0"
 355
 356 gdb_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!
 361 gdb_test "tfind none" "" ""