gdb/testsuite/gdb.base/attach.exp

   1 # Copyright 1997, 1999, 2002-2004, 2007-2012 Free Software Foundation,
   2 # 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
  18 # On HP-UX 11.0, this test is causing a process running the program
  19 # "attach" to be left around spinning.  Until we figure out why, I am
  20 # commenting out the test to avoid polluting tiamat (our 11.0 nightly
  21 # test machine) with these processes. RT
  22 #
  23 # Setting the magic bit in the target app should work.  I added a
  24 # "kill", and also a test for the R3 register warning.  JB
  25 if { [istarget "hppa*-*-hpux*"] } {
  26     return 0
  27 }
  28
  29 # are we on a target board
  30 if [is_remote target] then {
  31     return 0
  32 }
  33
  34 set testfile "attach"
  35 set srcfile  ${testfile}.c
  36 set srcfile2 ${testfile}2.c
  37 set binfile  ${objdir}/${subdir}/${testfile}
  38 set binfile2 ${objdir}/${subdir}/${testfile}2
  39 set escapedbinfile  [string_to_regexp ${objdir}/${subdir}/${testfile}]
  40
  41 #execute_anywhere "rm -f ${binfile} ${binfile2}"
  42 remote_exec build "rm -f ${binfile} ${binfile2}"
  43 # For debugging this test
  44 #
  45 #log_user 1
  46
  47 # build the first test case
  48 #
  49 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  50     untested attach.exp
  51     return -1
  52 }
  53
  54 # Build the in-system-call test
  55
  56 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile2}" "${binfile2}" executable {debug}] != "" } {
  57     untested attach.exp
  58     return -1
  59 }
  60
  61 if [get_compiler_info] {
  62     return -1
  63 }
  64
  65 proc do_attach_tests {} {
  66     global gdb_prompt
  67     global binfile
  68     global escapedbinfile
  69     global srcfile
  70     global testfile
  71     global objdir
  72     global subdir
  73     global timeout
  74
  75     # Start the program running and then wait for a bit, to be sure
  76     # that it can be attached to.
  77
  78     set testpid [eval exec $binfile &]
  79     exec sleep 2
  80     if { [istarget "*-*-cygwin*"] } {
  81         # testpid is the Cygwin PID, GDB uses the Windows PID, which might be
  82         # different due to the way fork/exec works.
  83         set testpid [ exec ps -e | gawk "{ if (\$1 == $testpid) print \$4; }" ]
  84     }
  85
  86     # Verify that we cannot attach to nonsense.
  87
  88     set test "attach to nonsense is prohibited"
  89     gdb_test_multiple "attach abc" "$test" {
  90         -re "Illegal process-id: abc\\.\r\n$gdb_prompt $" {
  91             pass "$test"
  92         }
  93         -re "Attaching to.*, process .*couldn't open /proc file.*$gdb_prompt $" {
  94             # Response expected from /proc-based systems.
  95             pass "$test"
  96         }
  97         -re "Can't attach to process..*$gdb_prompt $" {
  98             # Response expected on Cygwin
  99             pass "$test"
 100         }
 101         -re "Attaching to.*$gdb_prompt $" {
 102             fail "$test (bogus pid allowed)"
 103         }
 104     }
 105
 106     # Verify that we cannot attach to nonsense even if its initial part is
 107     # a valid PID.
 108
 109     set test "attach to digits-starting nonsense is prohibited"
 110     gdb_test_multiple "attach ${testpid}x" "$test" {
 111         -re "Illegal process-id: ${testpid}x\\.\r\n$gdb_prompt $" {
 112             pass "$test"
 113         }
 114         -re "Attaching to.*, process .*couldn't open /proc file.*$gdb_prompt $" {
 115             # Response expected from /proc-based systems.
 116             pass "$test"
 117         }
 118         -re "Can't attach to process..*$gdb_prompt $" {
 119             # Response expected on Cygwin
 120             pass "$test"
 121         }
 122         -re "Attaching to.*$gdb_prompt $" {
 123             fail "$test (bogus pid allowed)"
 124         }
 125     }
 126
 127     # Verify that we cannot attach to what appears to be a valid
 128     # process ID, but is a process that doesn't exist.  Traditionally,
 129     # most systems didn't have a process with ID 0, so we take that as
 130     # the default.  However, there are a few exceptions.
 131
 132     set boguspid 0
 133     if { [istarget "*-*-*bsd*"] } {
 134         # In FreeBSD 5.0, PID 0 is used for "swapper".  Use -1 instead
 135         # (which should have the desired effect on any version of
 136         # FreeBSD, and probably other *BSD's too).
 137         set boguspid -1
 138     }
 139     set test "attach to nonexistent process is prohibited"
 140     gdb_test_multiple "attach $boguspid" "$test" {
 141         -re "Attaching to.*, process $boguspid.*No such process.*$gdb_prompt $" {
 142             # Response expected on ptrace-based systems (i.e. HP-UX 10.20).
 143             pass "$test"
 144         }
 145         -re "Attaching to.*, process $boguspid failed.*Hint.*$gdb_prompt $" {
 146             # Response expected on ttrace-based systems (i.e. HP-UX 11.0).
 147             pass "$test"
 148         }
 149         -re "Attaching to.*, process $boguspid.*denied.*$gdb_prompt $" {
 150             pass "$test"
 151         }
 152         -re "Attaching to.*, process $boguspid.*not permitted.*$gdb_prompt $" {
 153             pass "$test"
 154         }
 155         -re "Attaching to.*, process .*couldn't open /proc file.*$gdb_prompt $" {
 156             # Response expected from /proc-based systems.
 157             pass "$test"
 158         }
 159         -re "Can't attach to process..*$gdb_prompt $" {
 160             # Response expected on Cygwin
 161             pass "$test"
 162         }
 163         -re "Attaching to.*, process $boguspid.*failed.*$gdb_prompt $" {
 164             # Response expected on the extended-remote target.
 165             pass "$test"
 166         }
 167     }
 168
 169     # Verify that we can attach to the process by first giving its
 170     # executable name via the file command, and using attach with the
 171     # process ID.
 172
 173     # (Actually, the test system appears to do this automatically for
 174     # us.  So, we must also be prepared to be asked if we want to
 175     # discard an existing set of symbols.)
 176
 177     set test "set file, before attach1"
 178     gdb_test_multiple "file $binfile" "$test" {
 179         -re "Load new symbol table from.*y or n. $" {
 180             gdb_test "y" "Reading symbols from $escapedbinfile\.\.\.*done." \
 181                 "$test (re-read)"
 182         }
 183         -re "Reading symbols from $escapedbinfile\.\.\.*done.*$gdb_prompt $" {
 184             pass "$test"
 185         }
 186     }
 187
 188     set test "attach1, after setting file"
 189     gdb_test_multiple "attach $testpid" "$test" {
 190         -re "Attaching to program.*`?$escapedbinfile'?, process $testpid.*main.*at .*$srcfile:.*$gdb_prompt $" {
 191             pass "$test"
 192         }
 193         -re "Attaching to program.*`?$escapedbinfile\.exe'?, process $testpid.*\[Switching to thread $testpid\..*\].*$gdb_prompt $" {
 194             # Response expected on Cygwin
 195             pass "$test"
 196         }
 197     }
 198
 199     # Verify that we can "see" the variable "should_exit" in the
 200     # program, and that it is zero.
 201
 202     gdb_test "print should_exit" " = 0" "after attach1, print should_exit"
 203
 204     # Detach the process.
 205
 206     gdb_test "detach" \
 207         "Detaching from program: .*$escapedbinfile, process $testpid" \
 208         "attach1 detach"
 209
 210     # Wait a bit for gdb to finish detaching
 211
 212     exec sleep 5
 213
 214     # Purge the symbols from gdb's brain.  (We want to be certain the
 215     # next attach, which won't be preceded by a "file" command, is
 216     # really getting the executable file without our help.)
 217
 218     set old_timeout $timeout
 219     set timeout 15
 220     set test "attach1, purging symbols after detach"
 221     gdb_test_multiple "file" "$test" {
 222         -re "No executable file now.*Discard symbol table.*y or n. $" {
 223             gdb_test "y" "No symbol file now." "$test"
 224         }
 225     }
 226     set timeout $old_timeout
 227
 228     # Verify that we can attach to the process just by giving the
 229     # process ID.
 230
 231     set test "attach2, with no file"
 232     set found_exec_file 0
 233     gdb_test_multiple "attach $testpid" "$test" {
 234         -re "Attaching to process $testpid.*Load new symbol table from \"$escapedbinfile\.exe\".*y or n. $" {
 235             # On Cygwin, the DLL's symbol tables are loaded prior to the
 236             # executable's symbol table.  This in turn always results in
 237             # asking the user for actually loading the symbol table of the
 238             # executable.
 239             gdb_test "y" "Reading symbols from $escapedbinfile\.\.\.*done." \
 240                 "$test (reset file)"
 241
 242             set found_exec_file 1
 243         }
 244         -re "Attaching to process $testpid.*Reading symbols from $escapedbinfile.*main.*at .*$gdb_prompt $" {
 245             pass "$test"
 246             set found_exec_file 1
 247         }
 248     }
 249
 250     if {$found_exec_file == 0} {
 251         set test "load file manually, after attach2"
 252         gdb_test_multiple "file $binfile" "$test" {
 253             -re "A program is being debugged already..*Are you sure you want to change the file.*y or n. $" {
 254                 gdb_test "y" "Reading symbols from $escapedbinfile\.\.\.*done." \
 255                     "$test (re-read)"
 256             }
 257             -re "Reading symbols from $escapedbinfile\.\.\.*done.*$gdb_prompt $" {
 258                 pass "$test"
 259             }
 260         }
 261     }
 262
 263     # Verify that we can modify the variable "should_exit" in the
 264     # program.
 265
 266     gdb_test_no_output "set should_exit=1" "after attach2, set should_exit"
 267
 268     # Verify that the modification really happened.
 269
 270     gdb_test "tbreak 19" "Temporary breakpoint .*at.*$srcfile, line 19.*" \
 271         "after attach2, set tbreak postloop"
 272
 273     gdb_test "continue" "main.*at.*$srcfile:19.*" \
 274         "after attach2, reach tbreak postloop"
 275
 276     # Allow the test process to exit, to cleanup after ourselves.
 277
 278     gdb_continue_to_end "after attach2, exit"
 279
 280     # Make sure we don't leave a process around to confuse
 281     # the next test run (and prevent the compile by keeping
 282     # the text file busy), in case the "set should_exit" didn't
 283     # work.
 284
 285     remote_exec build "kill -9 ${testpid}"
 286
 287     # Start the program running and then wait for a bit, to be sure
 288     # that it can be attached to.
 289
 290     set testpid [eval exec $binfile &]
 291     exec sleep 2
 292     if { [istarget "*-*-cygwin*"] } {
 293         # testpid is the Cygwin PID, GDB uses the Windows PID, which might be
 294         # different due to the way fork/exec works.
 295         set testpid [ exec ps -e | gawk "{ if (\$1 == $testpid) print \$4; }" ]
 296     }
 297
 298     # Verify that we can attach to the process, and find its a.out
 299     # when we're cd'd to some directory that doesn't contain the
 300     # a.out.  (We use the source path set by the "dir" command.)
 301
 302     gdb_test "dir ${objdir}/${subdir}" "Source directories searched: .*" \
 303         "set source path"
 304
 305     gdb_test "cd /tmp" "Working directory /tmp." \
 306         "cd away from process working directory"
 307
 308     # Explicitly flush out any knowledge of the previous attachment.
 309
 310     set test "before attach3, flush symbols"
 311     gdb_test_multiple "symbol-file" "$test" {
 312         -re "Discard symbol table from.*y or n. $" {
 313             gdb_test "y" "No symbol file now." \
 314                 "$test"
 315         }
 316         -re "No symbol file now.*$gdb_prompt $" {
 317             pass "$test"
 318         }
 319     }
 320
 321     gdb_test "exec" "No executable file now." \
 322         "before attach3, flush exec"
 323
 324     gdb_test "attach $testpid" \
 325         "Attaching to process $testpid.*Reading symbols from $escapedbinfile.*main.*at .*" \
 326         "attach when process' a.out not in cwd"
 327
 328     set test "after attach3, exit"
 329     gdb_test "kill" \
 330         "" \
 331         "$test" \
 332         "Kill the program being debugged.*y or n. $" \
 333         "y"
 334
 335     # Another "don't leave a process around"
 336     remote_exec build "kill -9 ${testpid}"
 337 }
 338
 339 proc do_call_attach_tests {} {
 340     global gdb_prompt
 341     global binfile2
 342
 343     # Start the program running and then wait for a bit, to be sure
 344     # that it can be attached to.
 345
 346     set testpid [eval exec $binfile2 &]
 347     exec sleep 2
 348     if { [istarget "*-*-cygwin*"] } {
 349         # testpid is the Cygwin PID, GDB uses the Windows PID, which might be
 350         # different due to the way fork/exec works.
 351         set testpid [ exec ps -e | gawk "{ if (\$1 == $testpid) print \$4; }" ]
 352     }
 353
 354     # Attach
 355
 356     gdb_test "file $binfile2" ".*" "force switch to gdb64, if necessary"
 357     set test "attach call"
 358     gdb_test_multiple "attach $testpid" "$test" {
 359         -re "warning: reading register.*I.*O error.*$gdb_prompt $" {
 360             fail "$test (read register error)"
 361         }
 362         -re "Attaching to.*process $testpid.*libc.*$gdb_prompt $" {
 363             pass "$test"
 364         }
 365         -re "Attaching to.*process $testpid.*\[Switching to thread $testpid\..*\].*$gdb_prompt $" {
 366             pass "$test"
 367         }
 368     }
 369
 370     # See if other registers are problems
 371
 372     set test "info other register"
 373     gdb_test_multiple "i r r3" "$test" {
 374         -re "warning: reading register.*$gdb_prompt $" {
 375             fail "$test"
 376         }
 377         -re "r3.*$gdb_prompt $" {
 378             pass "$test"
 379         }
 380     }
 381
 382     # Get rid of the process
 383
 384     gdb_test "p should_exit = 1"
 385     gdb_continue_to_end
 386
 387     # Be paranoid
 388
 389     remote_exec build "kill -9 ${testpid}"
 390 }
 391
 392
 393 # Start with a fresh gdb
 394
 395 gdb_exit
 396 gdb_start
 397 gdb_reinitialize_dir $srcdir/$subdir
 398 gdb_load ${binfile}
 399
 400 # This is a test of gdb's ability to attach to a running process.
 401
 402 do_attach_tests
 403
 404 # Test attaching when the target is inside a system call
 405
 406 gdb_exit
 407 gdb_start
 408
 409 gdb_reinitialize_dir $srcdir/$subdir
 410 do_call_attach_tests
 411
 412 return 0