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 # Build the in-system-call test
  67
  68 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile2}" "${binfile2}" executable {debug}] != "" } {
  69      gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
  70 }
  71
  72 if [get_compiler_info ${binfile}] {
  73     return -1
  74 }
  75
  76 proc do_attach_tests {} {
  77    global gdb_prompt
  78    global binfile
  79    global srcfile
  80    global testfile
  81    global objdir
  82    global subdir
  83    global timeout
  84
  85    # Start the program running and then wait for a bit, to be sure
  86    # that it can be attached to.
  87    #
  88    set testpid [eval exec $binfile &]
  89    exec sleep 2
  90
  91    # Verify that we cannot attach to nonsense.
  92    #
  93    send_gdb "attach abc\n"
  94    gdb_expect {
  95       -re ".*Illegal process-id: abc.*$gdb_prompt $"\
  96                       {pass "attach to nonsense is prohibited"}
  97       -re "Attaching to.*, process .*couldn't open /proc file.*$gdb_prompt $"\
  98                       {
  99                         # Response expected from /proc-based systems.
 100                         pass "attach to nonsense is prohibited"
 101                       }
 102       -re "Attaching to.*$gdb_prompt $"\
 103                       {fail "attach to nonsense is prohibited (bogus pid allowed)"}
 104       -re "$gdb_prompt $" {fail "attach to nonsense is prohibited"}
 105       timeout         {fail "(timeout) attach to nonsense is prohibited"}
 106    }
 107
 108    # Verify that we cannot attach to what appears to be a valid
 109    # process ID, but is a process that doesn't exist.  (I don't
 110    # believe any process is ever assigned #0, at least on HPUX.)
 111    #
 112    send_gdb "attach 0\n"
 113    gdb_expect {
 114       -re "Attaching to.*, process 0.*No such process.*$gdb_prompt $"\
 115                       {
 116                         # Response expected on HP-UX 10.20 (i.e., ptrace-based).
 117                         pass "attach to nonexistent process is prohibited"
 118                       }
 119       -re "Attaching to.*, process 0 failed.*Hint.*$gdb_prompt $"\
 120                       {
 121                         # Response expected on HP-UX 11.0 (i.e., ttrace-based).
 122                         pass "attach to nonexistent process is prohibited"
 123                       }
 124       -re "Attaching to.*, process 0.*denied.*$gdb_prompt $"\
 125                       {pass "attach to nonexistent process is prohibited"}
 126       -re "Attaching to.*, process .*couldn't open /proc file.*$gdb_prompt $"\
 127                       {
 128                         # Response expected from /proc-based systems.
 129                         pass "attach to nonexistent process is prohibited"
 130                       }
 131       -re "$gdb_prompt $" {fail "attach to nonexistent process is prohibited"}
 132       timeout         {fail "(timeout) attach to nonexistent process is prohibited"}
 133    }
 134
 135    # Verify that we can attach to the process by first giving its
 136    # executable name via the file command, and using attach with
 137    # the process ID.
 138    #
 139    # (Actually, the test system appears to do this automatically
 140    # for us.  So, we must also be prepared to be asked if we want
 141    # to discard an existing set of symbols.)
 142    #
 143    send_gdb "file $binfile\n"
 144    gdb_expect {
 145       -re "Load new symbol table from.*y or n.*$" {
 146          send_gdb "y\n"
 147          gdb_expect {
 148             -re "Reading symbols from $binfile\.\.\.*done.*$gdb_prompt $"\
 149                             {pass "(re)set file, before attach1"}
 150             -re "$gdb_prompt $" {fail "(re)set file, before attach1"}
 151             timeout         {fail "(timeout) (re)set file, before attach1"}
 152          }
 153       }
 154       -re "Reading symbols from $binfile\.\.\.*done.*$gdb_prompt $"\
 155                       {pass "set file, before attach1"}
 156       -re "$gdb_prompt $" {fail "set file, before attach1"}
 157       timeout         {fail "(timeout) set file, before attach1"}
 158    }
 159
 160    send_gdb "attach $testpid\n"
 161    gdb_expect {
 162       -re "Attaching to program.*`?$binfile'?, process $testpid.*main.*at .*$srcfile:.*$gdb_prompt $"\
 163                       {pass "attach1, after setting file"}
 164       -re "$gdb_prompt $" {fail "attach1, after setting file"}
 165       timeout         {fail "(timeout) attach1, after setting file"}
 166    }
 167
 168    # Verify that we can "see" the variable "should_exit" in the
 169    # program, and that it is zero.
 170    #
 171    send_gdb "print should_exit\n"
 172    gdb_expect {
 173       -re ".* = 0.*$gdb_prompt $"\
 174                       {pass "after attach1, print should_exit"}
 175       -re "$gdb_prompt $" {fail "after attach1, print should_exit"}
 176       timeout         {fail "(timeout) after attach1, print should_exit"}
 177    }
 178
 179    # Detach the process.
 180    #
 181    send_gdb "detach\n"
 182    gdb_expect {
 183       -re "Detaching from program: .*$binfile.*$gdb_prompt $"\
 184                       {pass "attach1 detach"}
 185       -re "$gdb_prompt $" {fail "attach1 detach"}
 186       timeout         {fail "(timeout) attach1 detach"}
 187    }
 188
 189    # Wait a bit for gdb to finish detaching
 190    #
 191    exec sleep 5
 192
 193    # Purge the symbols from gdb's brain.  (We want to be certain
 194    # the next attach, which won't be preceded by a "file" command,
 195    # is really getting the executable file without our help.)
 196    #
 197    set old_timeout $timeout
 198    set timeout 15
 199    send_gdb "file\n"
 200    gdb_expect {
 201       -re ".*gdb internal error.*$" {
 202           fail "Internal error, prob. Memory corruption"
 203       }
 204       -re "No executable file now.*Discard symbol table.*y or n.*$" {
 205          send_gdb "y\n"
 206          gdb_expect {
 207             -re "No symbol file now.*$gdb_prompt $"\
 208                             {pass "attach1, purging symbols after detach"}
 209             -re "$gdb_prompt $" {fail "attach1, purging symbols after detach"}
 210             timeout         {fail "(timeout) attach1, purging symbols after detach"}
 211          }
 212       }
 213       -re "$gdb_prompt $" {fail "attach1, purging file after detach"}
 214       timeout         {
 215           fail "(timeout) attach1, purging file after detach"
 216       }
 217    }
 218    set timeout $old_timeout
 219
 220    # Verify that we can attach to the process just by giving the
 221    # process ID.
 222    #
 223    send_gdb "attach $testpid\n"
 224    gdb_expect {
 225       -re "Attaching to process $testpid.*Reading symbols from $binfile.*main.*at .*$gdb_prompt $"\
 226                       {pass "attach2"}
 227       -re "$gdb_prompt $" {fail "attach2"}
 228       timeout         {fail "(timeout) attach2"}
 229    }
 230
 231    # Verify that we can modify the variable "should_exit" in the
 232    # program.
 233    #
 234    send_gdb "set should_exit=1\n"
 235    gdb_expect {
 236       -re "$gdb_prompt $" {pass "after attach2, set should_exit"}
 237       timeout         {fail "(timeout) after attach2, set should_exit"}
 238    }
 239
 240    # Verify that the modification really happened.
 241    #
 242    send_gdb "tbreak 19\n"
 243    gdb_expect {
 244       -re "Breakpoint .*at.*$srcfile, line 19.*$gdb_prompt $"\
 245                       {pass "after attach2, set tbreak postloop"}
 246       -re "$gdb_prompt $" {fail "after attach2, set tbreak postloop"}
 247       timeout         {fail "(timeout) after attach2, set tbreak postloop"}
 248    }
 249    send_gdb "continue\n"
 250    gdb_expect {
 251       -re "main.*at.*$srcfile:19.*$gdb_prompt $"\
 252                       {pass "after attach2, reach tbreak postloop"}
 253       -re "$gdb_prompt $" {fail "after attach2, reach tbreak postloop"}
 254       timeout         {fail "(timeout) after attach2, reach tbreak postloop"}
 255    }
 256
 257    # Allow the test process to exit, to cleanup after ourselves.
 258    #
 259    send_gdb "continue\n"
 260    gdb_expect {
 261       -re "Program exited normally.*$gdb_prompt $"\
 262                       {pass "after attach2, exit"}
 263       -re "$gdb_prompt $" {fail "after attach2, exit"}
 264       timeout         {fail "(timeout) after attach2, exit"}
 265    }
 266
 267    # Make sure we don't leave a process around to confuse
 268    # the next test run (and prevent the compile by keeping
 269    # the text file busy), in case the "set should_exit" didn't
 270    # work.
 271    #
 272    remote_exec build "kill -9 ${testpid}"
 273    # Start the program running and then wait for a bit, to be sure
 274    # that it can be attached to.
 275    #
 276    set testpid [eval exec $binfile &]
 277    exec sleep 2
 278
 279    # Verify that we can attach to the process, and find its a.out
 280    # when we're cd'd to some directory that doesn't contain the
 281    # a.out.  (We use the source path set by the "dir" command.)
 282    #
 283    send_gdb "dir ${objdir}/${subdir}\n"
 284    gdb_expect {
 285       -re ".*Source directories searched: .*$gdb_prompt $"\
 286                       {pass "set source path"}
 287       -re "$gdb_prompt $" {fail "set source path"}
 288       timeout         {fail "(timeout) set source path"}
 289    }
 290
 291    send_gdb "cd /tmp\n"
 292    gdb_expect {
 293       -re ".*Working directory /tmp.*$gdb_prompt $"\
 294                       {pass "cd away from process' a.out"}
 295       -re "$gdb_prompt $" {fail "cd away from process' a.out"}
 296       timeout         {fail "(timeout) cd away from process' a.out"}
 297    }
 298
 299    # Explicitly flush out any knowledge of the previous attachment.
 300    send_gdb "symbol\n"
 301    gdb_expect {
 302       -re ".*Discard symbol table from.*y or n. $"\
 303                       {send_gdb "y\n"
 304                        gdb_expect {
 305                           -re ".*No symbol file now.*$gdb_prompt $"\
 306                                           {pass "before attach3, flush symbols"}
 307                           -re "$gdb_prompt $" {fail "before attach3, flush symbols"}
 308                           timeout         {fail "(timeout) before attach3, flush symbols"}
 309                        }
 310                       }
 311       -re ".*No symbol file now.*$gdb_prompt $"\
 312                       {pass "before attach3, flush symbols"}
 313       -re "$gdb_prompt $" {fail "before attach3, flush symbols"}
 314       timeout         {fail "(timeout) before attach3, flush symbols"}
 315    }
 316    send_gdb "exec\n"
 317    gdb_expect {
 318       -re ".*No executable file now.*$gdb_prompt $"\
 319                       {pass "before attach3, flush exec"}
 320       -re "$gdb_prompt $" {fail "before attach3, flush exec"}
 321       timeout         {fail "(timeout) before attach3, flush exec"}
 322    }
 323
 324    send_gdb "attach $testpid\n"
 325    gdb_expect {
 326       -re "Attaching to process $testpid.*Reading symbols from $binfile.*main.*at .*$gdb_prompt $"\
 327                       {pass "attach when process' a.out not in cwd"}
 328       -re "$gdb_prompt $" {fail "attach when process' a.out not in cwd"}
 329       timeout         {fail "(timeout) attach when process' a.out not in cwd"}
 330    }
 331
 332    send_gdb "kill\n"
 333    gdb_expect {
 334       -re ".*Kill the program being debugged.*y or n. $"\
 335                       {send_gdb "y\n"
 336                        gdb_expect {
 337                           -re "$gdb_prompt $" {pass "after attach3, exit"}
 338                           timeout {fail "(timeout) after attach3, exit"}
 339                        }
 340                       }
 341       -re "$gdb_prompt $" {fail "after attach3, exit"}
 342       timeout         {fail "(timeout) after attach3, exit"}
 343    }
 344 }
 345
 346 proc do_call_attach_tests {} {
 347    global gdb_prompt
 348    global binfile2
 349
 350    # Start the program running and then wait for a bit, to be sure
 351    # that it can be attached to.
 352    #
 353    set testpid [eval exec $binfile2 &]
 354    exec sleep 2
 355
 356    # Attach
 357    #
 358    gdb_test "file $binfile2" ".*" "force switch to gdb64, if necessary"
 359    send_gdb "attach $testpid\n"
 360    gdb_expect {
 361       -re ".*warning: reading register.*I.*O error.*$gdb_prompt $" {
 362          fail "attach call, read register 3 error"
 363      }
 364      -re "Attaching to.*process $testpid.*libc.*$gdb_prompt $" {
 365          pass "attach call"
 366      }
 367       -re "$gdb_prompt $" {fail "attach call"}
 368       timeout         {fail "(timeout) attach call"}
 369    }
 370
 371    # See if other registers are problems
 372    #
 373    send_gdb "i r r3\n"
 374    gdb_expect {
 375        -re ".*warning: reading register.*$gdb_prompt $" {
 376            pass "CHFts23490: known bug"
 377        }
 378        -re ".*r3.*$gdb_prompt $" {
 379            pass "Bug fixed, Yayyy!"
 380        }
 381        timeout { fail "timeout on info reg" }
 382    }
 383
 384    # Get rid of the process
 385    #
 386    gdb_test "p should_exit = 1" ".*"
 387    gdb_test "c" ".*Program exited normally.*"
 388
 389    # Be paranoid
 390    #
 391     remote_exec build "kill -9 ${testpid}"
 392
 393 }
 394
 395
 396 # Start with a fresh gdb
 397 #
 398 gdb_exit
 399 gdb_start
 400 gdb_reinitialize_dir $srcdir/$subdir
 401 gdb_load ${binfile}
 402
 403 # This is a test of gdb's ability to attach to a running process.
 404 #
 405 do_attach_tests
 406
 407 # Test attaching when the target is inside a system call
 408 #
 409 gdb_exit
 410 gdb_start
 411
 412 gdb_reinitialize_dir $srcdir/$subdir
 413 do_call_attach_tests
 414
 415 return 0