gdb/testsuite/gdb.base/attach.exp

   1 # Copyright 1997-2015 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
  17 # On HP-UX 11.0, this test is causing a process running the program
  18 # "attach" to be left around spinning.  Until we figure out why, I am
  19 # commenting out the test to avoid polluting tiamat (our 11.0 nightly
  20 # test machine) with these processes. RT
  21 #
  22 # Setting the magic bit in the target app should work.  I added a
  23 # "kill", and also a test for the R3 register warning.  JB
  24 if { [istarget "hppa*-*-hpux*"] } {
  25     return 0
  26 }
  27
  28 # are we on a target board
  29 if [is_remote target] then {
  30     return 0
  31 }
  32
  33 standard_testfile attach.c attach2.c
  34 set binfile2 ${binfile}2
  35 set escapedbinfile  [string_to_regexp $binfile]
  36
  37 #execute_anywhere "rm -f ${binfile} ${binfile2}"
  38 remote_exec build "rm -f ${binfile} ${binfile2}"
  39 # For debugging this test
  40 #
  41 #log_user 1
  42
  43 # build the first test case
  44 #
  45 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  46     untested attach.exp
  47     return -1
  48 }
  49
  50 # Build the in-system-call test
  51
  52 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile2}" "${binfile2}" executable {debug}] != "" } {
  53     untested attach.exp
  54     return -1
  55 }
  56
  57 if [get_compiler_info] {
  58     return -1
  59 }
  60
  61 proc do_attach_tests {} {
  62     global gdb_prompt
  63     global binfile
  64     global escapedbinfile
  65     global srcfile
  66     global testfile
  67     global subdir
  68     global timeout
  69
  70     # Start the program running and then wait for a bit, to be sure
  71     # that it can be attached to.
  72
  73     set testpid [spawn_wait_for_attach $binfile]
  74
  75     # Verify that we cannot attach to nonsense.
  76
  77     set test "attach to nonsense is prohibited"
  78     gdb_test_multiple "attach abc" "$test" {
  79         -re "Illegal process-id: abc\\.\r\n$gdb_prompt $" {
  80             pass "$test"
  81         }
  82         -re "Attaching to.*, process .*couldn't open /proc file.*$gdb_prompt $" {
  83             # Response expected from /proc-based systems.
  84             pass "$test"
  85         }
  86         -re "Can't attach to process..*$gdb_prompt $" {
  87             # Response expected on Cygwin
  88             pass "$test"
  89         }
  90         -re "Attaching to.*$gdb_prompt $" {
  91             fail "$test (bogus pid allowed)"
  92         }
  93     }
  94
  95     # Verify that we cannot attach to nonsense even if its initial part is
  96     # a valid PID.
  97
  98     set test "attach to digits-starting nonsense is prohibited"
  99     gdb_test_multiple "attach ${testpid}x" "$test" {
 100         -re "Illegal process-id: ${testpid}x\\.\r\n$gdb_prompt $" {
 101             pass "$test"
 102         }
 103         -re "Attaching to.*, process .*couldn't open /proc file.*$gdb_prompt $" {
 104             # Response expected from /proc-based systems.
 105             pass "$test"
 106         }
 107         -re "Can't attach to process..*$gdb_prompt $" {
 108             # Response expected on Cygwin
 109             pass "$test"
 110         }
 111         -re "Attaching to.*$gdb_prompt $" {
 112             fail "$test (bogus pid allowed)"
 113         }
 114     }
 115
 116     # Verify that we cannot attach to what appears to be a valid
 117     # process ID, but is a process that doesn't exist.  Traditionally,
 118     # most systems didn't have a process with ID 0, so we take that as
 119     # the default.  However, there are a few exceptions.
 120
 121     set boguspid 0
 122     if { [istarget "*-*-*bsd*"] } {
 123         # In FreeBSD 5.0, PID 0 is used for "swapper".  Use -1 instead
 124         # (which should have the desired effect on any version of
 125         # FreeBSD, and probably other *BSD's too).
 126         set boguspid -1
 127     }
 128     set test "attach to nonexistent process is prohibited"
 129     gdb_test_multiple "attach $boguspid" "$test" {
 130         -re "Attaching to.*, process $boguspid.*No such process.*$gdb_prompt $" {
 131             # Response expected on ptrace-based systems (i.e. HP-UX 10.20).
 132             pass "$test"
 133         }
 134         -re "Attaching to.*, process $boguspid failed.*Hint.*$gdb_prompt $" {
 135             # Response expected on ttrace-based systems (i.e. HP-UX 11.0).
 136             pass "$test"
 137         }
 138         -re "Attaching to.*, process $boguspid.*denied.*$gdb_prompt $" {
 139             pass "$test"
 140         }
 141         -re "Attaching to.*, process $boguspid.*not permitted.*$gdb_prompt $" {
 142             pass "$test"
 143         }
 144         -re "Attaching to.*, process .*couldn't open /proc file.*$gdb_prompt $" {
 145             # Response expected from /proc-based systems.
 146             pass "$test"
 147         }
 148         -re "Can't attach to process..*$gdb_prompt $" {
 149             # Response expected on Cygwin
 150             pass "$test"
 151         }
 152         -re "Attaching to.*, process $boguspid.*failed.*$gdb_prompt $" {
 153             # Response expected on the extended-remote target.
 154             pass "$test"
 155         }
 156     }
 157
 158     # Verify that we can attach to the process by first giving its
 159     # executable name via the file command, and using attach with the
 160     # process ID.
 161
 162     # (Actually, the test system appears to do this automatically for
 163     # us.  So, we must also be prepared to be asked if we want to
 164     # discard an existing set of symbols.)
 165
 166     set test "set file, before attach1"
 167     gdb_test_multiple "file $binfile" "$test" {
 168         -re "Load new symbol table from.*y or n. $" {
 169             gdb_test "y" "Reading symbols from $escapedbinfile\.\.\.*done." \
 170                 "$test (re-read)"
 171         }
 172         -re "Reading symbols from $escapedbinfile\.\.\.*done.*$gdb_prompt $" {
 173             pass "$test"
 174         }
 175     }
 176
 177     set test "attach1, after setting file"
 178     gdb_test_multiple "attach $testpid" "$test" {
 179         -re "Attaching to program.*`?$escapedbinfile'?, process $testpid.*main.*at .*$srcfile:.*$gdb_prompt $" {
 180             pass "$test"
 181         }
 182         -re "Attaching to program.*`?$escapedbinfile\.exe'?, process $testpid.*\[Switching to thread $testpid\..*\].*$gdb_prompt $" {
 183             # Response expected on Cygwin
 184             pass "$test"
 185         }
 186     }
 187
 188     # Verify that we can "see" the variable "should_exit" in the
 189     # program, and that it is zero.
 190
 191     gdb_test "print should_exit" " = 0" "after attach1, print should_exit"
 192
 193     # Detach the process.
 194
 195     gdb_test "detach" \
 196         "Detaching from program: .*$escapedbinfile, process $testpid" \
 197         "attach1 detach"
 198
 199     # Wait a bit for gdb to finish detaching
 200
 201     exec sleep 5
 202
 203     # Purge the symbols from gdb's brain.  (We want to be certain the
 204     # next attach, which won't be preceded by a "file" command, is
 205     # really getting the executable file without our help.)
 206
 207     set old_timeout $timeout
 208     set timeout 15
 209     set test "attach1, purging symbols after detach"
 210     gdb_test_multiple "file" "$test" {
 211         -re "No executable file now.*Discard symbol table.*y or n. $" {
 212             gdb_test "y" "No symbol file now." "$test"
 213         }
 214     }
 215     set timeout $old_timeout
 216
 217     # Verify that we can attach to the process just by giving the
 218     # process ID.
 219
 220     set test "attach2, with no file"
 221     set found_exec_file 0
 222     gdb_test_multiple "attach $testpid" "$test" {
 223         -re "Attaching to process $testpid.*Load new symbol table from \"$escapedbinfile\.exe\".*y or n. $" {
 224             # On Cygwin, the DLL's symbol tables are loaded prior to the
 225             # executable's symbol table.  This in turn always results in
 226             # asking the user for actually loading the symbol table of the
 227             # executable.
 228             gdb_test "y" "Reading symbols from $escapedbinfile\.\.\.*done." \
 229                 "$test (reset file)"
 230
 231             set found_exec_file 1
 232         }
 233         -re "Attaching to process $testpid.*Reading symbols from $escapedbinfile.*main.*at .*$gdb_prompt $" {
 234             pass "$test"
 235             set found_exec_file 1
 236         }
 237     }
 238
 239     if {$found_exec_file == 0} {
 240         set test "load file manually, after attach2"
 241         gdb_test_multiple "file $binfile" "$test" {
 242             -re "A program is being debugged already..*Are you sure you want to change the file.*y or n. $" {
 243                 gdb_test "y" "Reading symbols from $escapedbinfile\.\.\.*done." \
 244                     "$test (re-read)"
 245             }
 246             -re "Reading symbols from $escapedbinfile\.\.\.*done.*$gdb_prompt $" {
 247                 pass "$test"
 248             }
 249         }
 250     }
 251
 252     # Verify that we can modify the variable "should_exit" in the
 253     # program.
 254
 255     gdb_test_no_output "set should_exit=1" "after attach2, set should_exit"
 256
 257     # Verify that the modification really happened.
 258
 259     gdb_breakpoint [gdb_get_line_number "postloop"] temporary
 260     gdb_continue_to_breakpoint "postloop" ".* postloop .*"
 261
 262     # Allow the test process to exit, to cleanup after ourselves.
 263
 264     gdb_continue_to_end "after attach2, exit"
 265
 266     # Make sure we don't leave a process around to confuse
 267     # the next test run (and prevent the compile by keeping
 268     # the text file busy), in case the "set should_exit" didn't
 269     # work.
 270
 271     remote_exec build "kill -9 ${testpid}"
 272
 273     set testpid [spawn_wait_for_attach $binfile]
 274
 275     # Verify that we can attach to the process, and find its a.out
 276     # when we're cd'd to some directory that doesn't contain the
 277     # a.out.  (We use the source path set by the "dir" command.)
 278
 279     gdb_test "dir [standard_output_file {}]" "Source directories searched: .*" \
 280         "set source path"
 281
 282     gdb_test "cd /tmp" "Working directory /tmp." \
 283         "cd away from process working directory"
 284
 285     # Explicitly flush out any knowledge of the previous attachment.
 286
 287     set test "before attach3, flush symbols"
 288     gdb_test_multiple "symbol-file" "$test" {
 289         -re "Discard symbol table from.*y or n. $" {
 290             gdb_test "y" "No symbol file now." \
 291                 "$test"
 292         }
 293         -re "No symbol file now.*$gdb_prompt $" {
 294             pass "$test"
 295         }
 296     }
 297
 298     gdb_test "exec" "No executable file now." \
 299         "before attach3, flush exec"
 300
 301     gdb_test "attach $testpid" \
 302         "Attaching to process $testpid.*Reading symbols from $escapedbinfile.*main.*at .*" \
 303         "attach when process' a.out not in cwd"
 304
 305     set test "after attach3, exit"
 306     gdb_test "kill" \
 307         "" \
 308         "$test" \
 309         "Kill the program being debugged.*y or n. $" \
 310         "y"
 311
 312     # Another "don't leave a process around"
 313     remote_exec build "kill -9 ${testpid}"
 314 }
 315
 316 proc do_call_attach_tests {} {
 317     global gdb_prompt
 318     global binfile2
 319
 320     set testpid [spawn_wait_for_attach $binfile2]
 321
 322     # Attach
 323
 324     gdb_test "file $binfile2" ".*" "force switch to gdb64, if necessary"
 325     set test "attach call"
 326     gdb_test_multiple "attach $testpid" "$test" {
 327         -re "warning: reading register.*I.*O error.*$gdb_prompt $" {
 328             fail "$test (read register error)"
 329         }
 330         -re "Attaching to.*process $testpid.*libc.*$gdb_prompt $" {
 331             pass "$test"
 332         }
 333         -re "Attaching to.*process $testpid.*\[Switching to thread $testpid\..*\].*$gdb_prompt $" {
 334             pass "$test"
 335         }
 336     }
 337
 338     # See if other registers are problems
 339
 340     set test "info other register"
 341     gdb_test_multiple "i r r3" "$test" {
 342         -re "warning: reading register.*$gdb_prompt $" {
 343             fail "$test"
 344         }
 345         -re "r3.*$gdb_prompt $" {
 346             pass "$test"
 347         }
 348     }
 349
 350     # Get rid of the process
 351
 352     gdb_test "p should_exit = 1"
 353     gdb_continue_to_end
 354
 355     # Be paranoid
 356
 357     remote_exec build "kill -9 ${testpid}"
 358 }
 359
 360 proc do_command_attach_tests {} {
 361     global gdb_prompt
 362     global binfile
 363     global verbose
 364     global GDB
 365     global INTERNAL_GDBFLAGS
 366     global GDBFLAGS
 367
 368     if ![isnative] then {
 369         unsupported "command attach test"
 370         return 0
 371     }
 372
 373     set testpid [spawn_wait_for_attach $binfile]
 374
 375     gdb_exit
 376     if $verbose>1 then {
 377         send_user "Spawning $GDB $INTERNAL_GDBFLAGS $GDBFLAGS --pid=$testpid\n"
 378     }
 379
 380     eval "spawn $GDB $INTERNAL_GDBFLAGS $GDBFLAGS --pid=$testpid"
 381     set test "starting with --pid"
 382     expect {
 383         -re "Reading symbols from.*$gdb_prompt $" {
 384             pass "$test"
 385         }
 386         timeout {
 387             fail "$test (timeout)"
 388         }
 389     }
 390
 391     # Get rid of the process
 392
 393     remote_exec build "kill -9 ${testpid}"
 394 }
 395
 396 # Test ' gdb --pid PID -ex "run" '.  GDB used to have a bug where
 397 # "run" would run before the attach finished - PR17347.
 398
 399 proc test_command_line_attach_run {} {
 400     global gdb_prompt
 401     global binfile
 402
 403     if ![isnative] then {
 404         unsupported "commandline attach run test"
 405         return 0
 406     }
 407
 408     with_test_prefix "cmdline attach run" {
 409         set testpid [spawn_wait_for_attach $binfile]
 410
 411         set test "run to prompt"
 412         gdb_exit
 413
 414         set res [gdb_spawn_with_cmdline_opts \
 415                      "-iex \"set height 0\" -iex \"set width 0\" --pid=$testpid -ex \"start\""]
 416         if { $res != 0} {
 417             fail $test
 418             remote_exec build "kill -9 ${testpid}"
 419             return $res
 420         }
 421         gdb_test_multiple "" $test {
 422             -re {Attaching to.*Start it from the beginning\? \(y or n\) } {
 423                 pass $test
 424             }
 425         }
 426
 427         send_gdb "y\n"
 428
 429         set test "run to main"
 430         gdb_test_multiple "" $test {
 431             -re "Temporary breakpoint .* main .*$gdb_prompt $" {
 432                 pass $test
 433             }
 434         }
 435
 436         # Get rid of the process
 437         remote_exec build "kill -9 ${testpid}"
 438     }
 439 }
 440
 441 # Start with a fresh gdb
 442
 443 gdb_exit
 444 gdb_start
 445 gdb_reinitialize_dir $srcdir/$subdir
 446 gdb_load ${binfile}
 447
 448 # This is a test of gdb's ability to attach to a running process.
 449
 450 do_attach_tests
 451
 452 # Test attaching when the target is inside a system call
 453
 454 gdb_exit
 455 gdb_start
 456
 457 gdb_reinitialize_dir $srcdir/$subdir
 458 do_call_attach_tests
 459
 460 # Test "gdb --pid"
 461
 462 do_command_attach_tests
 463
 464 test_command_line_attach_run
 465
 466 return 0