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 gdb_trace_setactions "8.6: setup TP to collect stack mem cast expr" \
 150         "$tdp6" \
 151         "collect \$fp, \(\*\(void \*\*\) \(\$sp\)\) @ 64" "^$"
 152
 153 gdb_test "tstart" "" ""
 154
 155 gdb_test "break end" "" ""
 156 gdb_test "continue" \
 157     "Continuing.*Breakpoint $decimal, end.*" \
 158     "run trace experiment"
 159
 160 gdb_test "tstop" "" ""
 161
 162 proc gdb_backtrace_tdp_1 { msg } {
 163     global gdb_prompt
 164
 165     # We are in a trace frame at which we didn't collect anything
 166     # except $PC.  Therefore we expect to be able to identify stack
 167     # frame #0, but that's about all.  In particular we do not expect
 168     # to be able to display the function's arguments or locals, and we
 169     # do not expect to be able to identify the caller of this function.
 170
 171     send_gdb "backtrace\n"
 172     gdb_expect {
 173         -re "#0\[\t \]+gdb_recursion_test.*depth=.*$gdb_prompt $" {
 174             pass "$msg"
 175         }
 176         -re ".*$gdb_prompt $" {
 177             fail "$msg"
 178         }
 179         timeout { fail "$msg (timeout)" }
 180     }
 181 }
 182
 183 proc gdb_backtrace_tdp_2 { msg } {
 184     global gdb_prompt
 185
 186     # We are in a trace frame at which we collected only the registers
 187     # Therefore we expect to be able to identify stack frame #0, but
 188     # we don't expect to be able to display its args unles they are
 189     # passed in registers (which isn't the case for m68k), and we
 190     # don't expect to be able to identify the caller's stack frame.
 191
 192     send_gdb "backtrace\n"
 193     gdb_expect {
 194         -re "#0\[\t \]+gdb_recursion_test.*depth=.*$gdb_prompt $" {
 195             pass "$msg"
 196         }
 197         -re ".*$gdb_prompt $" {
 198             fail "$msg"
 199         }
 200         timeout { fail "$msg (timeout)" }
 201     }
 202 }
 203
 204 proc gdb_backtrace_tdp_3 { msg } {
 205     global gdb_prompt
 206
 207     # We are in a trace frame at which we collected all registers, all
 208     # arguments and all locals.  This means that the display of
 209     # stack frame #0 should be complete (including argument values).
 210
 211     send_gdb "backtrace\n"
 212     gdb_expect {
 213         -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 $" {
 214             pass "$msg"
 215         }
 216         -re "#0\[\t \]+gdb_recursion_test.*depth=Cannot access.*$gdb_prompt $" {
 217             fail "$msg (failed to collect arguments)"
 218         }
 219         -re ".*$gdb_prompt $" {
 220             fail "$msg"
 221         }
 222         timeout { fail "$msg (timeout)" }
 223     }
 224 }
 225
 226 proc gdb_backtrace_tdp_4 { msg depth } {
 227     global gdb_prompt
 228
 229     # We are in a trace frame at which we collected all registers,
 230     # plus a sizeable hunk of stack memory.  This should enable us to
 231     # display at least several stack frames worth of backtrace.  We'll
 232     # assume that if we can't display at least "depth" levels (with
 233     # args), it counts as an error.
 234
 235     send_gdb "backtrace\n"
 236     gdb_expect {
 237         -re "#$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 $" {
 238             pass "$msg"
 239         }
 240         -re "#$depth\[\t \].*gdb_recursion_test.*depth=.*$gdb_prompt $" {
 241             fail "$msg (args missing from #$depth stack frame)"
 242         }
 243         -re "#\[0-9\]+\[\t \].*gdb_recursion_test.*depth=.*$gdb_prompt $" {
 244             fail "$msg (fewer than $depth stack frames found)"
 245         }
 246         -re ".*$gdb_prompt $" {
 247             fail "$msg"
 248         }
 249         timeout { fail "$msg (timeout)" }
 250     }
 251 }
 252
 253 #
 254 # begin backtrace test
 255 #
 256
 257 set timeout 60
 258
 259 gdb_tfind_test "init: make sure not debugging any trace frame" "none" "-1"
 260
 261 gdb_tfind_test "8.6: find start frame" "start" "0"
 262 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 263         "TDP $tdp2:" ""
 264 gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 1, collect nothing"
 265
 266 gdb_tfind_test "8.6: find frame 1"     "1" "1"
 267 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 268         "TDP $tdp3:" ""
 269 gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 1, collect regs"
 270
 271 gdb_tfind_test "8.6: find frame 2"     "2" "2"
 272 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 273         "TDP $tdp4:" ""
 274 gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 1, collect args and locals"
 275
 276
 277 gdb_tfind_test "8.6: find frame 4"     "4" "4"
 278 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 279         "TDP $tdp6:" ""
 280 gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0"
 281
 282 gdb_tfind_test "8.6: find frame 5"     "5" "5"
 283 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 284         "TDP $tdp2:" ""
 285 gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 2, collect nothing"
 286
 287 gdb_tfind_test "8.6: find frame 6"     "6" "6"
 288 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 289         "TDP $tdp3:" ""
 290 gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 2, collect regs"
 291
 292 gdb_tfind_test "8.6: find frame 7"     "7" "7"
 293 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 294         "TDP $tdp4:" ""
 295 gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 2, collect args and locals"
 296
 297
 298 gdb_tfind_test "8.6: find frame 9"     "9" "9"
 299 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 300         "TDP $tdp6:" ""
 301 gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0"
 302
 303 gdb_tfind_test "8.6: find frame 10"    "10" "10"
 304 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 305         "TDP $tdp2:" ""
 306 gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 3, collect nothing"
 307
 308 gdb_tfind_test "8.6: find frame 11"    "11" "11"
 309 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 310         "TDP $tdp3:" ""
 311 gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 3, collect regs"
 312
 313 gdb_tfind_test "8.6: find frame 12"    "12" "12"
 314 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 315         "TDP $tdp4:" ""
 316 gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 3, collect args and locals"
 317
 318
 319 gdb_tfind_test "8.6: find frame 14"    "14" "14"
 320 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 321         "TDP $tdp6:" ""
 322 gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0"
 323
 324 gdb_tfind_test "8.6: find frame 15"    "15" "15"
 325 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 326         "TDP $tdp2:" ""
 327 gdb_backtrace_tdp_1 "8.6: Backtrace, depth == 4, collect nothing"
 328
 329 gdb_tfind_test "8.6: find frame 16"    "16" "16"
 330 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 331         "TDP $tdp3:" ""
 332 gdb_backtrace_tdp_2 "8.6: Backtrace, depth == 4, collect regs"
 333
 334 gdb_tfind_test "8.6: find frame 17"    "17" "17"
 335 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 336         "TDP $tdp4:" ""
 337 gdb_backtrace_tdp_3 "8.6: Backtrace, depth == 4, collect args and locals"
 338
 339
 340 gdb_tfind_test "8.6: find frame 19"    "19" "19"
 341 gdb_test "printf \"TDP \%d:\\n\", \$tracepoint" \
 342         "TDP $tdp6:" ""
 343 gdb_backtrace_tdp_4 "8.6: Backtrace, depth == 1, collect stack mem expr" "0"
 344
 345 gdb_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!
 350 gdb_test "tfind none" "" ""