gdb/testsuite/gdb.base/attach.exp

   1 # Copyright 1997, 1999, 2002, 2003, 2004, 2007, 2008, 2009, 2010
   2 # Free Software Foundation, Inc.
   3
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 3 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  16
  17 if $tracelevel then {
  18     strace $tracelevel
  19 }
  20
  21 set prms_id 0
  22 set bug_id 0
  23
  24 # On HP-UX 11.0, this test is causing a process running the program
  25 # "attach" to be left around spinning.  Until we figure out why, I am
  26 # commenting out the test to avoid polluting tiamat (our 11.0 nightly
  27 # test machine) with these processes. RT
  28 #
  29 # Setting the magic bit in the target app should work.  I added a
  30 # "kill", and also a test for the R3 register warning.  JB
  31 if { [istarget "hppa*-*-hpux*"] } {
  32     return 0
  33 }
  34
  35 # are we on a target board
  36 if [is_remote target] then {
  37     return 0
  38 }
  39
  40 set testfile "attach"
  41 set srcfile  ${testfile}.c
  42 set srcfile2 ${testfile}2.c
  43 set binfile  ${objdir}/${subdir}/${testfile}
  44 set binfile2 ${objdir}/${subdir}/${testfile}2
  45 set escapedbinfile  [string_to_regexp ${objdir}/${subdir}/${testfile}]
  46
  47 #execute_anywhere "rm -f ${binfile} ${binfile2}"
  48 remote_exec build "rm -f ${binfile} ${binfile2}"
  49 # For debugging this test
  50 #
  51 #log_user 1
  52
  53 # build the first test case
  54 #
  55 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  56     untested attach.exp
  57     return -1
  58 }
  59
  60 # Build the in-system-call test
  61
  62 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile2}" "${binfile2}" executable {debug}] != "" } {
  63     untested attach.exp
  64     return -1
  65 }
  66
  67 if [get_compiler_info ${binfile}] {
  68     return -1
  69 }
  70
  71 proc do_attach_tests {} {
  72     global gdb_prompt
  73     global binfile
  74     global escapedbinfile
  75     global srcfile
  76     global testfile
  77     global objdir
  78     global subdir
  79     global timeout
  80
  81     # Start the program running and then wait for a bit, to be sure
  82     # that it can be attached to.
  83
  84     set testpid [eval exec $binfile &]
  85     exec sleep 2
  86     if { [istarget "*-*-cygwin*"] } {
  87         # testpid is the Cygwin PID, GDB uses the Windows PID, which might be
  88         # different due to the way fork/exec works.
  89         set testpid [ exec ps -e | gawk "{ if (\$1 == $testpid) print \$4; }" ]
  90     }
  91
  92     # Verify that we cannot attach to nonsense.
  93
  94     set test "attach to nonsense is prohibited"
  95     gdb_test_multiple "attach abc" "$test" {
  96         -re "Illegal process-id: abc\\.\r\n$gdb_prompt $" {
  97             pass "$test"
  98         }
  99         -re "Attaching to.*, process .*couldn't open /proc file.*$gdb_prompt $" {
 100             # Response expected from /proc-based systems.
 101             pass "$test"
 102         }
 103         -re "Can't attach to process..*$gdb_prompt $" {
 104             # Response expected on Cygwin
 105             pass "$test"
 106         }
 107         -re "Attaching to.*$gdb_prompt $" {
 108             fail "$test (bogus pid allowed)"
 109         }
 110     }
 111
 112     # Verify that we cannot attach to nonsense even if its initial part is
 113     # a valid PID.
 114
 115     set test "attach to digits-starting nonsense is prohibited"
 116     gdb_test_multiple "attach ${testpid}x" "$test" {
 117         -re "Illegal process-id: ${testpid}x\\.\r\n$gdb_prompt $" {
 118             pass "$test"
 119         }
 120         -re "Attaching to.*, process .*couldn't open /proc file.*$gdb_prompt $" {
 121             # Response expected from /proc-based systems.
 122             pass "$test"
 123         }
 124         -re "Can't attach to process..*$gdb_prompt $" {
 125             # Response expected on Cygwin
 126             pass "$test"
 127         }
 128         -re "Attaching to.*$gdb_prompt $" {
 129             fail "$test (bogus pid allowed)"
 130         }
 131     }
 132
 133     # Verify that we cannot attach to what appears to be a valid
 134     # process ID, but is a process that doesn't exist.  Traditionally,
 135     # most systems didn't have a process with ID 0, so we take that as
 136     # the default.  However, there are a few exceptions.
 137
 138     set boguspid 0
 139     if { [istarget "*-*-*bsd*"] } {
 140         # In FreeBSD 5.0, PID 0 is used for "swapper".  Use -1 instead
 141         # (which should have the desired effect on any version of
 142         # FreeBSD, and probably other *BSD's too).
 143         set boguspid -1
 144     }
 145     set test "attach to nonexistent process is prohibited"
 146     gdb_test_multiple "attach $boguspid" "$test" {
 147         -re "Attaching to.*, process $boguspid.*No such process.*$gdb_prompt $" {
 148             # Response expected on ptrace-based systems (i.e. HP-UX 10.20).
 149             pass "$test"
 150         }
 151         -re "Attaching to.*, process $boguspid failed.*Hint.*$gdb_prompt $" {
 152             # Response expected on ttrace-based systems (i.e. HP-UX 11.0).
 153             pass "$test"
 154         }
 155         -re "Attaching to.*, process $boguspid.*denied.*$gdb_prompt $" {
 156             pass "$test"
 157         }
 158         -re "Attaching to.*, process $boguspid.*not permitted.*$gdb_prompt $" {
 159             pass "$test"
 160         }
 161         -re "Attaching to.*, process .*couldn't open /proc file.*$gdb_prompt $" {
 162             # Response expected from /proc-based systems.
 163             pass "$test"
 164         }
 165         -re "Can't attach to process..*$gdb_prompt $" {
 166             # Response expected on Cygwin
 167             pass "$test"
 168         }
 169     }
 170
 171     # Verify that we can attach to the process by first giving its
 172     # executable name via the file command, and using attach with the
 173     # process ID.
 174
 175     # (Actually, the test system appears to do this automatically for
 176     # us.  So, we must also be prepared to be asked if we want to
 177     # discard an existing set of symbols.)
 178
 179     set test "set file, before attach1"
 180     gdb_test_multiple "file $binfile" "$test" {
 181         -re "Load new symbol table from.*y or n. $" {
 182             gdb_test "y" "Reading symbols from $escapedbinfile\.\.\.*done." \
 183                 "$test (re-read)"
 184         }
 185         -re "Reading symbols from $escapedbinfile\.\.\.*done.*$gdb_prompt $" {
 186             pass "$test"
 187         }
 188     }
 189
 190     set test "attach1, after setting file"
 191     gdb_test_multiple "attach $testpid" "$test" {
 192         -re "Attaching to program.*`?$escapedbinfile'?, process $testpid.*main.*at .*$srcfile:.*$gdb_prompt $" {
 193             pass "$test"
 194         }
 195         -re "Attaching to program.*`?$escapedbinfile\.exe'?, process $testpid.*\[Switching to thread $testpid\..*\].*$gdb_prompt $" {
 196             # Response expected on Cygwin
 197             pass "$test"
 198         }
 199     }
 200
 201     # Verify that we can "see" the variable "should_exit" in the
 202     # program, and that it is zero.
 203
 204     gdb_test "print should_exit" " = 0" "after attach1, print should_exit"
 205
 206     # Detach the process.
 207
 208     gdb_test "detach" \
 209         "Detaching from program: .*$escapedbinfile, process $testpid" \
 210         "attach1 detach"
 211
 212     # Wait a bit for gdb to finish detaching
 213
 214     exec sleep 5
 215
 216     # Purge the symbols from gdb's brain.  (We want to be certain the
 217     # next attach, which won't be preceded by a "file" command, is
 218     # really getting the executable file without our help.)
 219
 220     set old_timeout $timeout
 221     set timeout 15
 222     set test "attach1, purging symbols after detach"
 223     gdb_test_multiple "file" "$test" {
 224         -re "No executable file now.*Discard symbol table.*y or n. $" {
 225             gdb_test "y" "No symbol file now." "$test"
 226         }
 227     }
 228     set timeout $old_timeout
 229
 230     # Verify that we can attach to the process just by giving the
 231     # process ID.
 232
 233     set test "set file, before attach2"
 234     gdb_test_multiple "attach $testpid" "$test" {
 235         -re "Attaching to process $testpid.*Load new symbol table from \"$escapedbinfile\.exe\".*y or n. $" {
 236             # On Cygwin, the DLL's symbol tables are loaded prior to the
 237             # executable's symbol table.  This in turn always results in
 238             # asking the user for actually loading the symbol table of the
 239             # executable.
 240             gdb_test "y" "Reading symbols from $escapedbinfile\.\.\.*done." \
 241                 "$test (reset file)"
 242         }
 243         -re "Attaching to process $testpid.*Reading symbols from $escapedbinfile.*main.*at .*$gdb_prompt $" {
 244             pass "$test"
 245         }
 246     }
 247
 248     # Verify that we can modify the variable "should_exit" in the
 249     # program.
 250
 251     gdb_test "set should_exit=1" "" "after attach2, set should_exit"
 252
 253     # Verify that the modification really happened.
 254
 255     send_gdb "tbreak 19\n"
 256     gdb_expect {
 257         -re "Temporary breakpoint .*at.*$srcfile, line 19.*$gdb_prompt $" {
 258             pass "after attach2, set tbreak postloop"
 259         }
 260         -re "$gdb_prompt $" {
 261             fail "after attach2, set tbreak postloop"
 262         }
 263         timeout {
 264             fail "(timeout) after attach2, set tbreak postloop"
 265         }
 266     }
 267     send_gdb "continue\n"
 268     gdb_expect {
 269         -re "main.*at.*$srcfile:19.*$gdb_prompt $" {
 270             pass "after attach2, reach tbreak postloop"
 271         }
 272         -re "$gdb_prompt $" {
 273             fail "after attach2, reach tbreak postloop"
 274         }
 275         timeout {
 276             fail "(timeout) after attach2, reach tbreak postloop"
 277         }
 278     }
 279
 280     # Allow the test process to exit, to cleanup after ourselves.
 281
 282     gdb_test "continue" "Program exited normally." "after attach2, exit"
 283
 284     # Make sure we don't leave a process around to confuse
 285     # the next test run (and prevent the compile by keeping
 286     # the text file busy), in case the "set should_exit" didn't
 287     # work.
 288
 289     remote_exec build "kill -9 ${testpid}"
 290
 291     # Start the program running and then wait for a bit, to be sure
 292     # that it can be attached to.
 293
 294     set testpid [eval exec $binfile &]
 295     exec sleep 2
 296     if { [istarget "*-*-cygwin*"] } {
 297         # testpid is the Cygwin PID, GDB uses the Windows PID, which might be
 298         # different due to the way fork/exec works.
 299         set testpid [ exec ps -e | gawk "{ if (\$1 == $testpid) print \$4; }" ]
 300     }
 301
 302     # Verify that we can attach to the process, and find its a.out
 303     # when we're cd'd to some directory that doesn't contain the
 304     # a.out.  (We use the source path set by the "dir" command.)
 305
 306     gdb_test "dir ${objdir}/${subdir}" "Source directories searched: .*" \
 307         "set source path"
 308
 309     gdb_test "cd /tmp" "Working directory /tmp." \
 310         "cd away from process working directory"
 311
 312     # Explicitly flush out any knowledge of the previous attachment.
 313
 314     set test "before attach3, flush symbols"
 315     gdb_test_multiple "symbol-file" "$test" {
 316         -re "Discard symbol table from.*y or n. $" {
 317             gdb_test "y" "No symbol file now." \
 318                 "$test"
 319         }
 320         -re "No symbol file now.*$gdb_prompt $" {
 321             pass "$test"
 322         }
 323     }
 324
 325     gdb_test "exec" "No executable file now." \
 326         "before attach3, flush exec"
 327
 328     gdb_test "attach $testpid" \
 329         "Attaching to process $testpid.*Reading symbols from $escapedbinfile.*main.*at .*" \
 330         "attach when process' a.out not in cwd"
 331
 332     set test "after attach3, exit"
 333     gdb_test_multiple "kill" "$test" {
 334         -re "Kill the program being debugged.*y or n. $" {
 335             gdb_test "y" "" "$test"
 336         }
 337     }
 338
 339     # Another "don't leave a process around"
 340     remote_exec build "kill -9 ${testpid}"
 341 }
 342
 343 proc do_call_attach_tests {} {
 344     global gdb_prompt
 345     global binfile2
 346
 347     # Start the program running and then wait for a bit, to be sure
 348     # that it can be attached to.
 349
 350     set testpid [eval exec $binfile2 &]
 351     exec sleep 2
 352     if { [istarget "*-*-cygwin*"] } {
 353         # testpid is the Cygwin PID, GDB uses the Windows PID, which might be
 354         # different due to the way fork/exec works.
 355         set testpid [ exec ps -e | gawk "{ if (\$1 == $testpid) print \$4; }" ]
 356     }
 357
 358     # Attach
 359
 360     gdb_test "file $binfile2" "" "force switch to gdb64, if necessary"
 361     set test "attach call"
 362     gdb_test_multiple "attach $testpid" "$test" {
 363         -re "warning: reading register.*I.*O error.*$gdb_prompt $" {
 364             fail "$test (read register error)"
 365         }
 366         -re "Attaching to.*process $testpid.*libc.*$gdb_prompt $" {
 367             pass "$test"
 368         }
 369         -re "Attaching to.*process $testpid.*\[Switching to thread $testpid\..*\].*$gdb_prompt $" {
 370             pass "$test"
 371         }
 372     }
 373
 374     # See if other registers are problems
 375
 376     set test "info other register"
 377     gdb_test_multiple "i r r3" "$test" {
 378         -re "warning: reading register.*$gdb_prompt $" {
 379             fail "$test"
 380         }
 381         -re "r3.*$gdb_prompt $" {
 382             pass "$test"
 383         }
 384     }
 385
 386     # Get rid of the process
 387
 388     gdb_test "p should_exit = 1"
 389     gdb_test "c" "Program exited normally."
 390
 391     # Be paranoid
 392
 393     remote_exec build "kill -9 ${testpid}"
 394 }
 395
 396
 397 # Start with a fresh gdb
 398
 399 gdb_exit
 400 gdb_start
 401 gdb_reinitialize_dir $srcdir/$subdir
 402 gdb_load ${binfile}
 403
 404 # This is a test of gdb's ability to attach to a running process.
 405
 406 do_attach_tests
 407
 408 # Test attaching when the target is inside a system call
 409
 410 gdb_exit
 411 gdb_start
 412
 413 gdb_reinitialize_dir $srcdir/$subdir
 414 do_call_attach_tests
 415
 416 return 0