gdb/testsuite/gdb.trace/backtrace.exp

   1 #   Copyright 1998, 2007-2012 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
  21 gdb_exit
  22 gdb_start
  23
  24 set testfile "actions"
  25 set srcfile ${testfile}.c
  26 set binfile $objdir/$subdir/backtrace
  27 if { [gdb_compile "$srcdir/$subdir/$srcfile" $binfile \
  28           executable {debug nowarnings}] != "" } {
  29     untested backtrace.exp
  30     return -1
  31 }
  32 gdb_load $binfile
  33 gdb_test "tstop"       ".*" ""
  34 gdb_test "tfind none"  ".*" ""
  35 runto_main
  36 gdb_reinitialize_dir $srcdir/$subdir
  37
  38 if { ![gdb_target_supports_trace] } then {
  39     unsupported "Current target does not support trace"
  40     return 1;
  41
  42 }
  43
  44 #
  45 # test backtraces in trace frames
  46 #
  47
  48 set testline1 0
  49 set testline2 0
  50 set testline3 0
  51 set testline4 0
  52 set testline5 0
  53 set testline6 0
  54
  55 set arg1 1
  56 set arg2 2
  57 set arg3 3
  58 set arg4 4
  59 set arg5 5
  60 set arg6 6
  61
  62 set baseline [gdb_find_recursion_test_baseline $srcfile];
  63 if { $baseline == -1 } {
  64     fail "Could not find gdb_recursion_test function"
  65     return;
  66 }
  67
  68 set return_me 0
  69
  70 gdb_test_multiple "list $baseline, +12" "all tests in this module will fail" {
  71     -re "\[\r\n\](\[0-9\]+).*gdbtestline 1 " {
  72         set testline1 $expect_out(1,string)
  73         exp_continue
  74     }
  75     -re "\[\r\n\](\[0-9\]+).*gdbtestline 2 " {
  76         set testline2 $expect_out(1,string)
  77         exp_continue
  78     }
  79     -re "\[\r\n\](\[0-9\]+).*gdbtestline 3 " {
  80         set testline3 $expect_out(1,string)
  81         exp_continue
  82     }
  83     -re "\[\r\n\](\[0-9\]+).*gdbtestline 4 " {
  84         set testline4 $expect_out(1,string)
  85         exp_continue
  86     }
  87     -re "\[\r\n\](\[0-9\]+).*gdbtestline 5 " {
  88         set testline5 $expect_out(1,string)
  89         exp_continue
  90     }
  91     -re "\[\r\n\](\[0-9\]+).*gdbtestline 6 " {
  92         set testline6 $expect_out(1,string)
  93         exp_continue
  94     }
  95     -re ".*$gdb_prompt $" {
  96         if { ($testline1 == 0) || ($testline2 == 0) || ($testline3 == 0) || ($testline4 == 0) || ($testline5 == 0) || ($testline6 == 0) } {
  97             untested backtrace.exp
  98             set return_me 1
  99 all tests in this module will fail."
 100         }
 101     }
 102     default {
 103             untested backtrace.exp
 104             set return_me 1
 105 all tests in this module will fail."
 106     }
 107 }
 108
 109 if { $return_me == 1 } then {
 110     return -1;
 111 }
 112
 113 #
 114 # Setup backtrace experiment.  This will involve:
 115 #   1) a tracepoint where nothing is collected
 116 #   2) a tracepoint where only regs are collected
 117 #   3) a tracepoint where regs, locals and args are collected
 118 #   4) a tracepoint where regs plus some amount of stack are collected.
 119 #
 120
 121 gdb_delete_tracepoints
 122 set tdp2 [gdb_gettpnum $testline2]
 123 set tdp3 [gdb_gettpnum $testline3]
 124 set tdp4 [gdb_gettpnum $testline4]
 125 set tdp5 [gdb_gettpnum $testline5]
 126 set tdp6 [gdb_gettpnum $testline6]
 127 if {    $tdp2 <= 0 || $tdp3 <= 0 || \
 128         $tdp4 <= 0 || $tdp5 <= 0 || $tdp6 <= 0 } then {
 129     fail "setting tracepoints failed"
 130     return;
 131 }
 132
 133 #gdb_trace_setactions "setup TP to collect FP" \
 134 #       "$tdp2" \
 135 #       "collect \$fp" ""
 136 #
 137
 138 gdb_trace_setactions "8.6: setup TP to collect regs" \
 139         "$tdp3" \
 140         "collect \$regs" "^$"
 141
 142 gdb_trace_setactions "8.6: setup TP to collect regs, args, and locals" \
 143         "$tdp4" \
 144         "collect \$regs, \$args, \$locs" "^$"
 145
 146 if [is_amd64_regs_target] {
 147     set fpreg "\$rbp"
 148     set spreg "\$rsp"
 149 } elseif [is_x86_like_target] {
 150     set fpreg "\$ebp"
 151     set spreg "\$esp"
 152 } else {
 153     set fpreg "\$fp"
 154     set spreg "\$sp"
 155 }
 156
 157 gdb_trace_setactions "8.6: setup TP to collect stack mem cast expr" \
 158        "$tdp6" \
 159        "collect $fpreg, \(\*\(void \*\*\) \($spreg\)\) @ 64" "^$"
 160
 161 gdb_test "tstart" ".*" ""
 162
 163 gdb_test "break end" ".*" ""
 164 gdb_test "continue" \
 165     "Continuing.*Breakpoint $decimal, end.*" \
 166     "run trace experiment"
 167
 168 gdb_test "tstop" ".*" ""
 169
 170 proc gdb_backtrace_tdp_1 { msg } {
 171     global gdb_prompt
 172
 173     # We are in a trace frame at which we didn't collect anything
 174     # except $PC.  Therefore we expect to be able to identify stack
 175     # frame #0, but that's about all.  In particular we do not expect
 176     # to be able to display the function's arguments or locals, and we
 177     # do not expect to be able to identify the caller of this function.
 178
 179     gdb_test "backtrace" \
 180         "#0\[\t \]+gdb_recursion_test.*depth=.*" \
 181         "$msg"
 182 }
 183
 184 proc gdb_backtrace_tdp_2 { msg } {
 185     global gdb_prompt
 186
 187     # We are in a trace frame at which we collected only the registers
 188     # Therefore we expect to be able to identify stack frame #0, but
 189     # we don't expect to be able to display its args unles they are
 190     # passed in registers (which isn't the case for m68k), and we
 191     # don't expect to be able to identify the caller's stack frame.
 192
 193     gdb_test "backtrace" \
 194         "#0\[\t \]+gdb_recursion_test.*depth=.*" \
 195         "$msg"
 196 }
 197
 198 proc gdb_backtrace_tdp_3 { msg } {
 199     global gdb_prompt
 200
 201     # We are in a trace frame at which we collected all registers, all
 202     # arguments and all locals.  This means that the display of
 203     # stack frame #0 should be complete (including argument values).
 204
 205     gdb_test_multiple "backtrace" "$msg" {
 206         -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 $" {
 207             pass "$msg"
 208         }
 209         -re "#0\[\t \]+gdb_recursion_test.*depth=Cannot access.*$gdb_prompt $" {
 210             fail "$msg (failed to collect arguments)"
 211         }
 212     }
 213 }
 214
 215 proc gdb_backtrace_tdp_4 { msg depth } {
 216     global gdb_prompt
 217
 218     # We are in a trace frame at which we collected all registers,
 219     # plus a sizeable hunk of stack memory.  This should enable us to
 220     # display at least several stack frames worth of backtrace.  We'll
 221     # assume that if we can't display at least "depth" levels (with
 222     # args), it counts as an error.
 223
 224     gdb_test_multiple "backtrace" "$msg" {
 225         -re "#$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 $" {
 226             pass "$msg"
 227         }
 228         -re "#$depth\[\t \].*gdb_recursion_test.*depth=.*$gdb_prompt $" {
 229             fail "$msg (args missing from #$depth stack frame)"
 230         }
 231         -re "#\[0-9\]+\[\t \].*gdb_recursion_test.*depth=.*$gdb_prompt $" {
 232             fail "$msg (fewer than $depth stack frames found)"
 233         }
 234     }
 235 }
 236
 237 #
 238 # begin backtrace test
 239 #
 240
 241 set timeout 60
 242
 243 gdb_tfind_test "init: make sure not debugging any trace frame" "none" "-1"
 244
 245 gdb_tfind_test "8.6: find start frame" "start" "0"
 246 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 247         "TDP $tdp2:" ""
 248 gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 1, collect nothing"
 249
 250 gdb_tfind_test "8.6: find frame 1"     "1" "1"
 251 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 252         "TDP $tdp3:" ""
 253 gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 1, collect regs"
 254
 255 gdb_tfind_test "8.6: find frame 2"     "2" "2"
 256 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 257         "TDP $tdp4:" ""
 258 gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 1, collect args and locals"
 259
 260
 261 gdb_tfind_test "8.6: find frame 4"     "4" "4"
 262 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 263         "TDP $tdp6:" ""
 264 gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0"
 265
 266 gdb_tfind_test "8.6: find frame 5"     "5" "5"
 267 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 268         "TDP $tdp2:" ""
 269 gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 2, collect nothing"
 270
 271 gdb_tfind_test "8.6: find frame 6"     "6" "6"
 272 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 273         "TDP $tdp3:" ""
 274 gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 2, collect regs"
 275
 276 gdb_tfind_test "8.6: find frame 7"     "7" "7"
 277 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 278         "TDP $tdp4:" ""
 279 gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 2, collect args and locals"
 280
 281
 282 gdb_tfind_test "8.6: find frame 9"     "9" "9"
 283 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 284         "TDP $tdp6:" ""
 285 gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0"
 286
 287 gdb_tfind_test "8.6: find frame 10"    "10" "10"
 288 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 289         "TDP $tdp2:" ""
 290 gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 3, collect nothing"
 291
 292 gdb_tfind_test "8.6: find frame 11"    "11" "11"
 293 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 294         "TDP $tdp3:" ""
 295 gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 3, collect regs"
 296
 297 gdb_tfind_test "8.6: find frame 12"    "12" "12"
 298 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 299         "TDP $tdp4:" ""
 300 gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 3, collect args and locals"
 301
 302
 303 gdb_tfind_test "8.6: find frame 14"    "14" "14"
 304 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 305         "TDP $tdp6:" ""
 306 gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0"
 307
 308 gdb_tfind_test "8.6: find frame 15"    "15" "15"
 309 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 310         "TDP $tdp2:" ""
 311 gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 4, collect nothing"
 312
 313 gdb_tfind_test "8.6: find frame 16"    "16" "16"
 314 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 315         "TDP $tdp3:" ""
 316 gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 4, collect regs"
 317
 318 gdb_tfind_test "8.6: find frame 17"    "17" "17"
 319 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 320         "TDP $tdp4:" ""
 321 gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 4, collect args and locals"
 322
 323
 324 gdb_tfind_test "8.6: find frame 19"    "19" "19"
 325 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 326         "TDP $tdp6:" ""
 327 gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0"
 328
 329 gdb_test "printf \"x \%d x\\n\", depth == 3" \
 330         "x 0 x" \
 331         "1.13: trace in recursion: depth not equal to 3"
 332
 333 # Finished!
 334 gdb_test "tfind none" ".*" ""