gdb/testsuite/gdb.base/attach.exp

   1 #   Copyright 1997, 1999, 2002 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 2 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, write to the Free Software
  15 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  16
  17 # Please email any bugs, comments, and/or additions to this file to:
  18 # bug-gdb@prep.ai.mit.edu
  19
  20 if $tracelevel then {
  21         strace $tracelevel
  22         }
  23
  24 set prms_id 0
  25 set bug_id 0
  26
  27 # On HP-UX 11.0, this test is causing a process running the program
  28 # "attach" to be left around spinning.  Until we figure out why, I am
  29 # commenting out the test to avoid polluting tiamat (our 11.0 nightly
  30 # test machine) with these processes. RT
  31 #
  32 # Setting the magic bit in the target app should work.  I added a
  33 # "kill", and also a test for the R3 register warning.  JB
  34 if { [istarget "hppa*-*-hpux*"] } {
  35     return 0
  36 }
  37
  38 # are we on a target board
  39 if [is_remote target] then {
  40     return 0
  41 }
  42
  43 set testfile "attach"
  44 set srcfile  ${testfile}.c
  45 set srcfile2 ${testfile}2.c
  46 set binfile  ${objdir}/${subdir}/${testfile}
  47 set binfile2 ${objdir}/${subdir}/${testfile}2
  48 set cleanupfile ${objdir}/${subdir}/${testfile}.awk
  49
  50 #execute_anywhere "rm -f ${binfile} ${binfile2}"
  51 remote_exec build "rm -f ${binfile} ${binfile2}"
  52 # For debugging this test
  53 #
  54 #log_user 1
  55
  56 # Clean out any old files from past runs.
  57 #
  58 remote_exec build "${cleanupfile}"
  59
  60 # build the first test case
  61 #
  62 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  63      gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
  64 }
  65
  66 # Because we can't attach over nfs, copy binfile to /tmp/${binfile}.${pid}
  67 # and replace binfile with a symbolic link
  68
  69   set pid [pid]
  70   exec /bin/cp -f ${binfile} /tmp/attach1.${pid}
  71   exec rm -f ${binfile}
  72   set binfile /tmp/attach1.${pid}
  73 #  exec ln -s /tmp/attach1.${pid} ${binfile}
  74
  75 # Build the in-system-call test
  76
  77 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile2}" "${binfile2}" executable {debug}] != "" } {
  78      gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
  79 }
  80
  81 # Because we can't attach over nfs, copy binfile2 to /tmp/${binfile2}.${pid}
  82 # and replace binfile2 with a symbolic link
  83
  84   set pid [pid]
  85   exec cp -f ${binfile2} /tmp/attach2.${pid}
  86   exec rm -f ${binfile2}
  87   set binfile2 /tmp/attach2.${pid}
  88 #  exec ln -s /tmp/attach2.${pid} ${binfile2}
  89
  90
  91 if [get_compiler_info ${binfile}] {
  92     return -1
  93 }
  94
  95 proc do_attach_tests {} {
  96    global gdb_prompt
  97    global binfile
  98    global srcfile
  99    global testfile
 100    global objdir
 101    global subdir
 102    global timeout
 103
 104    # Start the program running and then wait for a bit, to be sure
 105    # that it can be attached to.
 106    #
 107    set testpid [eval exec $binfile &]
 108    exec sleep 2
 109
 110    # Verify that we cannot attach to nonsense.
 111    #
 112    send_gdb "attach abc\n"
 113    gdb_expect {
 114       -re ".*Illegal process-id: abc.*$gdb_prompt $"\
 115                       {pass "attach to nonsense is prohibited"}
 116       -re "Attaching to.*, process .*couldn't open /proc file.*$gdb_prompt $"\
 117                       {
 118                         # Response expected from /proc-based systems.
 119                         pass "attach to nonsense is prohibited"
 120                       }
 121       -re "Attaching to.*$gdb_prompt $"\
 122                       {fail "attach to nonsense is prohibited (bogus pid allowed)"}
 123       -re "$gdb_prompt $" {fail "attach to nonsense is prohibited"}
 124       timeout         {fail "(timeout) attach to nonsense is prohibited"}
 125    }
 126
 127    # Verify that we cannot attach to what appears to be a valid
 128    # process ID, but is a process that doesn't exist.  (I don't
 129    # believe any process is ever assigned #0, at least on HPUX.)
 130    #
 131    send_gdb "attach 0\n"
 132    gdb_expect {
 133       -re "Attaching to.*, process 0.*No such process.*$gdb_prompt $"\
 134                       {
 135                         # Response expected on HP-UX 10.20 (i.e., ptrace-based).
 136                         pass "attach to nonexistent process is prohibited"
 137                       }
 138       -re "Attaching to.*, process 0 failed.*Hint.*$gdb_prompt $"\
 139                       {
 140                         # Response expected on HP-UX 11.0 (i.e., ttrace-based).
 141                         pass "attach to nonexistent process is prohibited"
 142                       }
 143       -re "Attaching to.*, process 0.*denied.*$gdb_prompt $"\
 144                       {pass "attach to nonexistent process is prohibited"}
 145       -re "Attaching to.*, process .*couldn't open /proc file.*$gdb_prompt $"\
 146                       {
 147                         # Response expected from /proc-based systems.
 148                         pass "attach to nonexistent process is prohibited"
 149                       }
 150       -re "$gdb_prompt $" {fail "attach to nonexistent process is prohibited"}
 151       timeout         {fail "(timeout) attach to nonexistent process is prohibited"}
 152    }
 153
 154    # Verify that we can attach to the process by first giving its
 155    # executable name via the file command, and using attach with
 156    # the process ID.
 157    #
 158    # (Actually, the test system appears to do this automatically
 159    # for us.  So, we must also be prepared to be asked if we want
 160    # to discard an existing set of symbols.)
 161    #
 162    send_gdb "file $binfile\n"
 163    gdb_expect {
 164       -re "Load new symbol table from.*y or n.*$" {
 165          send_gdb "y\n"
 166          gdb_expect {
 167             -re "Reading symbols from $binfile\.\.\.*done.*$gdb_prompt $"\
 168                             {pass "(re)set file, before attach1"}
 169             -re "$gdb_prompt $" {fail "(re)set file, before attach1"}
 170             timeout         {fail "(timeout) (re)set file, before attach1"}
 171          }
 172       }
 173       -re "Reading symbols from $binfile\.\.\.*done.*$gdb_prompt $"\
 174                       {pass "set file, before attach1"}
 175       -re "$gdb_prompt $" {fail "set file, before attach1"}
 176       timeout         {fail "(timeout) set file, before attach1"}
 177    }
 178
 179    send_gdb "attach $testpid\n"
 180    gdb_expect {
 181       -re "Attaching to program.*`?$binfile'?, process $testpid.*main.*at .*$srcfile:.*$gdb_prompt $"\
 182                       {pass "attach1, after setting file"}
 183       -re "$gdb_prompt $" {fail "attach1, after setting file"}
 184       timeout         {fail "(timeout) attach1, after setting file"}
 185    }
 186
 187    # Verify that we can "see" the variable "should_exit" in the
 188    # program, and that it is zero.
 189    #
 190    send_gdb "print should_exit\n"
 191    gdb_expect {
 192       -re ".* = 0.*$gdb_prompt $"\
 193                       {pass "after attach1, print should_exit"}
 194       -re "$gdb_prompt $" {fail "after attach1, print should_exit"}
 195       timeout         {fail "(timeout) after attach1, print should_exit"}
 196    }
 197
 198    # Detach the process.
 199    #
 200    send_gdb "detach\n"
 201    gdb_expect {
 202       -re "Detaching from program: .*$binfile.*$gdb_prompt $"\
 203                       {pass "attach1 detach"}
 204       -re "$gdb_prompt $" {fail "attach1 detach"}
 205       timeout         {fail "(timeout) attach1 detach"}
 206    }
 207
 208    # Wait a bit for gdb to finish detaching
 209    #
 210    exec sleep 5
 211
 212    # Purge the symbols from gdb's brain.  (We want to be certain
 213    # the next attach, which won't be preceded by a "file" command,
 214    # is really getting the executable file without our help.)
 215    #
 216    set old_timeout $timeout
 217    set timeout 15
 218    send_gdb "file\n"
 219    gdb_expect {
 220       -re ".*gdb internal error.*$" {
 221           fail "Internal error, prob. Memory corruption"
 222       }
 223       -re "No executable file now.*Discard symbol table.*y or n.*$" {
 224          send_gdb "y\n"
 225          gdb_expect {
 226             -re "No symbol file now.*$gdb_prompt $"\
 227                             {pass "attach1, purging symbols after detach"}
 228             -re "$gdb_prompt $" {fail "attach1, purging symbols after detach"}
 229             timeout         {fail "(timeout) attach1, purging symbols after detach"}
 230          }
 231       }
 232       -re "$gdb_prompt $" {fail "attach1, purging file after detach"}
 233       timeout         {
 234           fail "(timeout) attach1, purging file after detach"
 235       }
 236    }
 237    set timeout $old_timeout
 238
 239    # Verify that we can attach to the process just by giving the
 240    # process ID.
 241    #
 242    send_gdb "attach $testpid\n"
 243    gdb_expect {
 244       -re "Attaching to process $testpid.*Reading symbols from $binfile.*main.*at .*$gdb_prompt $"\
 245                       {pass "attach2"}
 246       -re "$gdb_prompt $" {fail "attach2"}
 247       timeout         {fail "(timeout) attach2"}
 248    }
 249
 250    # Verify that we can modify the variable "should_exit" in the
 251    # program.
 252    #
 253    send_gdb "set should_exit=1\n"
 254    gdb_expect {
 255       -re "$gdb_prompt $" {pass "after attach2, set should_exit"}
 256       timeout         {fail "(timeout) after attach2, set should_exit"}
 257    }
 258
 259    # Verify that the modification really happened.
 260    #
 261    send_gdb "tbreak 19\n"
 262    gdb_expect {
 263       -re "Breakpoint .*at.*$srcfile, line 19.*$gdb_prompt $"\
 264                       {pass "after attach2, set tbreak postloop"}
 265       -re "$gdb_prompt $" {fail "after attach2, set tbreak postloop"}
 266       timeout         {fail "(timeout) after attach2, set tbreak postloop"}
 267    }
 268    send_gdb "continue\n"
 269    gdb_expect {
 270       -re "main.*at.*$srcfile:19.*$gdb_prompt $"\
 271                       {pass "after attach2, reach tbreak postloop"}
 272       -re "$gdb_prompt $" {fail "after attach2, reach tbreak postloop"}
 273       timeout         {fail "(timeout) after attach2, reach tbreak postloop"}
 274    }
 275
 276    # Allow the test process to exit, to cleanup after ourselves.
 277    #
 278    send_gdb "continue\n"
 279    gdb_expect {
 280       -re "Program exited normally.*$gdb_prompt $"\
 281                       {pass "after attach2, exit"}
 282       -re "$gdb_prompt $" {fail "after attach2, exit"}
 283       timeout         {fail "(timeout) after attach2, exit"}
 284    }
 285
 286    # Make sure we don't leave a process around to confuse
 287    # the next test run (and prevent the compile by keeping
 288    # the text file busy), in case the "set should_exit" didn't
 289    # work.
 290    #
 291    remote_exec build "kill -9 ${testpid}"
 292    # Start the program running and then wait for a bit, to be sure
 293    # that it can be attached to.
 294    #
 295    set testpid [eval exec $binfile &]
 296    exec sleep 2
 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    send_gdb "dir ${objdir}/${subdir}\n"
 303    gdb_expect {
 304       -re ".*Source directories searched: .*$gdb_prompt $"\
 305                       {pass "set source path"}
 306       -re "$gdb_prompt $" {fail "set source path"}
 307       timeout         {fail "(timeout) set source path"}
 308    }
 309
 310    send_gdb "cd /tmp\n"
 311    gdb_expect {
 312       -re ".*Working directory /tmp.*$gdb_prompt $"\
 313                       {pass "cd away from process' a.out"}
 314       -re "$gdb_prompt $" {fail "cd away from process' a.out"}
 315       timeout         {fail "(timeout) cd away from process' a.out"}
 316    }
 317
 318    # Explicitly flush out any knowledge of the previous attachment.
 319    send_gdb "symbol\n"
 320    gdb_expect {
 321       -re ".*Discard symbol table from.*y or n. $"\
 322                       {send_gdb "y\n"
 323                        gdb_expect {
 324                           -re ".*No symbol file now.*$gdb_prompt $"\
 325                                           {pass "before attach3, flush symbols"}
 326                           -re "$gdb_prompt $" {fail "before attach3, flush symbols"}
 327                           timeout         {fail "(timeout) before attach3, flush symbols"}
 328                        }
 329                       }
 330       -re ".*No symbol file now.*$gdb_prompt $"\
 331                       {pass "before attach3, flush symbols"}
 332       -re "$gdb_prompt $" {fail "before attach3, flush symbols"}
 333       timeout         {fail "(timeout) before attach3, flush symbols"}
 334    }
 335    send_gdb "exec\n"
 336    gdb_expect {
 337       -re ".*No executable file now.*$gdb_prompt $"\
 338                       {pass "before attach3, flush exec"}
 339       -re "$gdb_prompt $" {fail "before attach3, flush exec"}
 340       timeout         {fail "(timeout) before attach3, flush exec"}
 341    }
 342
 343    send_gdb "attach $testpid\n"
 344    gdb_expect {
 345       -re "Attaching to process $testpid.*Reading symbols from $binfile.*main.*at .*$gdb_prompt $"\
 346                       {pass "attach when process' a.out not in cwd"}
 347       -re "$gdb_prompt $" {fail "attach when process' a.out not in cwd"}
 348       timeout         {fail "(timeout) attach when process' a.out not in cwd"}
 349    }
 350
 351    send_gdb "kill\n"
 352    gdb_expect {
 353       -re ".*Kill the program being debugged.*y or n. $"\
 354                       {send_gdb "y\n"
 355                        gdb_expect {
 356                           -re "$gdb_prompt $" {pass "after attach3, exit"}
 357                           timeout {fail "(timeout) after attach3, exit"}
 358                        }
 359                       }
 360       -re "$gdb_prompt $" {fail "after attach3, exit"}
 361       timeout         {fail "(timeout) after attach3, exit"}
 362    }
 363 }
 364
 365 proc do_call_attach_tests {} {
 366    global gdb_prompt
 367    global binfile2
 368
 369    # Start the program running and then wait for a bit, to be sure
 370    # that it can be attached to.
 371    #
 372    set testpid [eval exec $binfile2 &]
 373    exec sleep 2
 374
 375    # Attach
 376    #
 377    gdb_test "file $binfile2" ".*" "force switch to gdb64, if necessary"
 378    send_gdb "attach $testpid\n"
 379    gdb_expect {
 380       -re ".*warning: reading register.*I.*O error.*$gdb_prompt $" {
 381          fail "attach call, read register 3 error"
 382      }
 383      -re "Attaching to.*process $testpid.*libc.*$gdb_prompt $" {
 384          pass "attach call"
 385      }
 386       -re "$gdb_prompt $" {fail "attach call"}
 387       timeout         {fail "(timeout) attach call"}
 388    }
 389
 390    # See if other registers are problems
 391    #
 392    send_gdb "i r r3\n"
 393    gdb_expect {
 394        -re ".*warning: reading register.*$gdb_prompt $" {
 395            pass "CHFts23490: known bug"
 396        }
 397        -re ".*r3.*$gdb_prompt $" {
 398            pass "Bug fixed, Yayyy!"
 399        }
 400        timeout { fail "timeout on info reg" }
 401    }
 402
 403    # Get rid of the process
 404    #
 405    gdb_test "p should_exit = 1" ".*"
 406    gdb_test "c" ".*Program exited normally.*"
 407
 408    # Be paranoid
 409    #
 410     remote_exec build "kill -9 ${testpid}"
 411
 412 }
 413
 414
 415 # Start with a fresh gdb
 416 #
 417 gdb_exit
 418 gdb_start
 419 gdb_reinitialize_dir $srcdir/$subdir
 420 gdb_load ${binfile}
 421
 422 # This is a test of gdb's ability to attach to a running process.
 423 #
 424 do_attach_tests
 425
 426 # Test attaching when the target is inside a system call
 427 #
 428 gdb_exit
 429 gdb_start
 430
 431 # this seems not necessary. - guo
 432 #
 433 # # Since we have moved the executable to /tmp, it will be hard for gdb
 434 # # to find the object file/executable to read the symbols.  This is
 435 # # a known limitation.  We try and get the name of the executable the
 436 # # process is running from a variety of methods, but none is foolproof.
 437 # # Using "dir" will get us the symbols.
 438 #
 439 # gdb_test "dir ./gdb.base" ".*" "set up directory before attach"
 440 gdb_reinitialize_dir $srcdir/$subdir
 441 do_call_attach_tests
 442
 443 # Cleanup the files placed in /tmp and the symlinks
 444   remote_exec build "rm -f ${binfile} ${binfile2} /tmp/attach1.${pid} /tmp/attach2.${pid}"
 445
 446 return 0