gdb/testsuite/gdb.base/attach.exp

   1 #   Copyright (C) 1997 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 # On HP-UX 11.0, this test is causing a process running
  21 # the program "attach" to be left around spinning.
  22 # Until we figure out why, I am commenting out the test
  23 # to avoid polluting tiamat (our 11.0 nightly test machine)
  24 # with these processes. RT
  25 #
  26 # Setting the magic bit in the target app should work.
  27 # I added a "kill", and also a test for the R3 register
  28 #  warning.           JB
  29 #
  30 if $tracelevel then {
  31         strace $tracelevel
  32         }
  33
  34 set prms_id 0
  35 set bug_id 0
  36
  37
  38 if { ![istarget "hppa*-*-hpux*"] } {
  39     #setup_xfail "*-*-*"
  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 $"\
 115                       {pass "attach to nonsense is prohibited"}
 116       -re "Attaching to.*$gdb_prompt $"\
 117                       {fail "attach to nonsense is prohibited (bogus pid allowed)"}
 118       -re "$gdb_prompt $" {fail "attach to nonsense is prohibited"}
 119       timeout         {fail "(timeout) attach to nonsense is prohibited"}
 120    }
 121
 122    # Verify that we cannot attach to what appears to be a valid
 123    # process ID, but is a process that doesn't exist.  (I don't
 124    # believe any process is ever assigned #0, at least on HPUX.)
 125    #
 126    send_gdb "attach 0\n"
 127    gdb_expect {
 128       # This reponse is expected on HP-UX 10.20 (i.e., ptrace-based).
 129       -re "Attaching to.*, process 0.*No such process.*$gdb_prompt $"\
 130                       {pass "attach to nonexistent process is prohibited"}
 131       # This response is expected on HP-UX 11.0 (i.e., ttrace-based).
 132       -re "Attaching to.*, process 0 failed.*Hint.*$gdb_prompt $"\
 133                       {pass "attach to nonexistent process is prohibited"}
 134       -re "Attaching to.*, process 0.*denied.*$gdb_prompt $"\
 135                       {pass "attach to nonexistent process is prohibited"}
 136       -re "$gdb_prompt $" {fail "attach to nonexistent process is prohibited"}
 137       timeout         {fail "(timeout) attach to nonexistent process is prohibited"}
 138    }
 139
 140    # Verify that we can attach to the process by first giving its
 141    # executable name via the file command, and using attach with
 142    # the process ID.
 143    #
 144    # (Actually, the test system appears to do this automatically
 145    # for us.  So, we must also be prepared to be asked if we want
 146    # to discard an existing set of symbols.)
 147    #
 148    send_gdb "file $binfile\n"
 149    gdb_expect {
 150       -re "Load new symbol table from.*y or n.*$" {
 151          send_gdb "y\n"
 152          gdb_expect {
 153             -re "Reading symbols from $binfile\.\.\.*done.*$gdb_prompt $"\
 154                             {pass "(re)set file, before attach1"}
 155             -re "$gdb_prompt $" {fail "(re)set file, before attach1"}
 156             timeout         {fail "(timeout) (re)set file, before attach1"}
 157          }
 158       }
 159       -re "Reading symbols from $binfile\.\.\.*done.*$gdb_prompt $"\
 160                       {pass "set file, before attach1"}
 161       -re "$gdb_prompt $" {fail "set file, before attach1"}
 162       timeout         {fail "(timeout) set file, before attach1"}
 163    }
 164
 165    send_gdb "attach $testpid\n"
 166    gdb_expect {
 167       -re "Attaching to program.*$binfile, process $testpid.*main.*at .*$srcfile:.*$gdb_prompt $"\
 168                       {pass "attach1, after setting file"}
 169       -re "$gdb_prompt $" {fail "attach1, after setting file"}
 170       timeout         {fail "(timeout) attach1, after setting file"}
 171    }
 172
 173    # Verify that we can "see" the variable "should_exit" in the
 174    # program, and that it is zero.
 175    #
 176    send_gdb "print should_exit\n"
 177    gdb_expect {
 178       -re ".* = 0.*$gdb_prompt $"\
 179                       {pass "after attach1, print should_exit"}
 180       -re "$gdb_prompt $" {fail "after attach1, print should_exit"}
 181       timeout         {fail "(timeout) after attach1, print should_exit"}
 182    }
 183
 184    # Detach the process.
 185    #
 186    send_gdb "detach\n"
 187    gdb_expect {
 188       -re "Detaching from program: .*$binfile.*$gdb_prompt $"\
 189                       {pass "attach1 detach"}
 190       -re "$gdb_prompt $" {fail "attach1 detach"}
 191       timeout         {fail "(timeout) attach1 detach"}
 192    }
 193
 194    # Wait a bit for gdb to finish detaching
 195    #
 196    exec sleep 5
 197
 198    # Purge the symbols from gdb's brain.  (We want to be certain
 199    # the next attach, which won't be preceded by a "file" command,
 200    # is really getting the executable file without our help.)
 201    #
 202    set old_timeout $timeout
 203    set timeout 15
 204    send_gdb "file\n"
 205    gdb_expect {
 206       -re ".*gdb internal error.*$" {
 207           fail "Internal error, prob. Memory corruption"
 208       }
 209       -re "No executable file now.*Discard symbol table.*y or n.*$" {
 210          send_gdb "y\n"
 211          gdb_expect {
 212             -re "No symbol file now.*$gdb_prompt $"\
 213                             {pass "attach1, purging symbols after detach"}
 214             -re "$gdb_prompt $" {fail "attach1, purging symbols after detach"}
 215             timeout         {fail "(timeout) attach1, purging symbols after detach"}
 216          }
 217       }
 218       -re "$gdb_prompt $" {fail "attach1, purging file after detach"}
 219       timeout         {
 220           fail "(timeout) attach1, purging file after detach"
 221       }
 222    }
 223    set timeout $old_timeout
 224
 225    # Verify that we can attach to the process just by giving the
 226    # process ID.
 227    #
 228    send_gdb "attach $testpid\n"
 229    gdb_expect {
 230       -re "Attaching to process $testpid.*Reading symbols from $binfile.*main.*at .*$gdb_prompt $"\
 231                       {pass "attach2"}
 232       -re "$gdb_prompt $" {fail "attach2"}
 233       timeout         {fail "(timeout) attach2"}
 234    }
 235
 236    # Verify that we can modify the variable "should_exit" in the
 237    # program.
 238    #
 239    send_gdb "set should_exit=1\n"
 240    gdb_expect {
 241       -re "$gdb_prompt $" {pass "after attach2, set should_exit"}
 242       timeout         {fail "(timeout) after attach2, set should_exit"}
 243    }
 244
 245    # Verify that the modification really happened.
 246    #
 247    send_gdb "tbreak 19\n"
 248    gdb_expect {
 249       -re "Breakpoint .*at.*$srcfile, line 19.*$gdb_prompt $"\
 250                       {pass "after attach2, set tbreak postloop"}
 251       -re "$gdb_prompt $" {fail "after attach2, set tbreak postloop"}
 252       timeout         {fail "(timeout) after attach2, set tbreak postloop"}
 253    }
 254    send_gdb "continue\n"
 255    gdb_expect {
 256       -re "main.*at.*$srcfile:19.*$gdb_prompt $"\
 257                       {pass "after attach2, reach tbreak postloop"}
 258       -re "$gdb_prompt $" {fail "after attach2, reach tbreak postloop"}
 259       timeout         {fail "(timeout) after attach2, reach tbreak postloop"}
 260    }
 261
 262    # Allow the test process to exit, to cleanup after ourselves.
 263    #
 264    send_gdb "continue\n"
 265    gdb_expect {
 266       -re "Program exited normally.*$gdb_prompt $"\
 267                       {pass "after attach2, exit"}
 268       -re "$gdb_prompt $" {fail "after attach2, exit"}
 269       timeout         {fail "(timeout) after attach2, exit"}
 270    }
 271
 272    # Make sure we don't leave a process around to confuse
 273    # the next test run (and prevent the compile by keeping
 274    # the text file busy), in case the "set should_exit" didn't
 275    # work.
 276    #
 277    remote_exec build "kill -9 ${testpid}"
 278    # Start the program running and then wait for a bit, to be sure
 279    # that it can be attached to.
 280    #
 281    set testpid [eval exec $binfile &]
 282    exec sleep 2
 283
 284    # Verify that we can attach to the process, and find its a.out
 285    # when we're cd'd to some directory that doesn't contain the
 286    # a.out.  (We use the source path set by the "dir" command.)
 287    #
 288    send_gdb "dir ${objdir}/${subdir}\n"
 289    gdb_expect {
 290       -re ".*Source directories searched: .*$gdb_prompt $"\
 291                       {pass "set source path"}
 292       -re "$gdb_prompt $" {fail "set source path"}
 293       timeout         {fail "(timeout) set source path"}
 294    }
 295
 296    send_gdb "cd /tmp\n"
 297    gdb_expect {
 298       -re ".*Working directory /tmp.*$gdb_prompt $"\
 299                       {pass "cd away from process' a.out"}
 300       -re "$gdb_prompt $" {fail "cd away from process' a.out"}
 301       timeout         {fail "(timeout) cd away from process' a.out"}
 302    }
 303
 304    # Explicitly flush out any knowledge of the previous attachment.
 305    send_gdb "symbol\n"
 306    gdb_expect {
 307       -re ".*Discard symbol table from.*y or n. $"\
 308                       {send_gdb "y\n"
 309                        gdb_expect {
 310                           -re ".*No symbol file now.*$gdb_prompt $"\
 311                                           {pass "before attach3, flush symbols"}
 312                           -re "$gdb_prompt $" {fail "before attach3, flush symbols"}
 313                           timeout         {fail "(timeout) before attach3, flush symbols"}
 314                        }
 315                       }
 316       -re ".*No symbol file now.*$gdb_prompt $"\
 317                       {pass "before attach3, flush symbols"}
 318       -re "$gdb_prompt $" {fail "before attach3, flush symbols"}
 319       timeout         {fail "(timeout) before attach3, flush symbols"}
 320    }
 321    send_gdb "exec\n"
 322    gdb_expect {
 323       -re ".*No executable file now.*$gdb_prompt $"\
 324                       {pass "before attach3, flush exec"}
 325       -re "$gdb_prompt $" {fail "before attach3, flush exec"}
 326       timeout         {fail "(timeout) before attach3, flush exec"}
 327    }
 328
 329    send_gdb "attach $testpid\n"
 330    gdb_expect {
 331       -re "Attaching to process $testpid.*Reading symbols from $binfile.*main.*at .*$gdb_prompt $"\
 332                       {pass "attach when process' a.out not in cwd"}
 333       -re "$gdb_prompt $" {fail "attach when process' a.out not in cwd"}
 334       timeout         {fail "(timeout) attach when process' a.out not in cwd"}
 335    }
 336
 337    send_gdb "kill\n"
 338    gdb_expect {
 339       -re ".*Kill the program being debugged.*y or n. $"\
 340                       {send_gdb "y\n"
 341                        gdb_expect {
 342                           -re "$gdb_prompt $" {pass "after attach3, exit"}
 343                           timeout {fail "(timeout) after attach3, exit"}
 344                        }
 345                       }
 346       -re "$gdb_prompt $" {fail "after attach3, exit"}
 347       timeout         {fail "(timeout) after attach3, exit"}
 348    }
 349 }
 350
 351 proc do_call_attach_tests {} {
 352    global gdb_prompt
 353    global binfile2
 354
 355    # Start the program running and then wait for a bit, to be sure
 356    # that it can be attached to.
 357    #
 358    set testpid [eval exec $binfile2 &]
 359    exec sleep 2
 360
 361    # Attach
 362    #
 363    gdb_test "file $binfile2" ".*" "force switch to gdb64, if necessary"
 364    send_gdb "attach $testpid\n"
 365    gdb_expect {
 366       -re ".*warning: reading register.*I.*O error.*$gdb_prompt $" {
 367          fail "attach call, read register 3 error"
 368      }
 369      -re "Attaching to.*process $testpid.*libc.*$gdb_prompt $" {
 370          pass "attach call"
 371      }
 372       -re "$gdb_prompt $" {fail "attach call"}
 373       timeout         {fail "(timeout) attach call"}
 374    }
 375
 376    # See if other registers are problems
 377    #
 378    send_gdb "i r r3\n"
 379    gdb_expect {
 380        -re ".*warning: reading register.*$gdb_prompt $" {
 381            pass "CHFts23490: known bug"
 382        }
 383        -re ".*r3.*$gdb_prompt $" {
 384            pass "Bug fixed, Yayyy!"
 385        }
 386        timeout { fail "timeout on info reg" }
 387    }
 388
 389    # Get rid of the process
 390    #
 391    gdb_test "p should_exit = 1" ".*"
 392    gdb_test "c" ".*Program exited normally.*"
 393
 394    # Be paranoid
 395    #
 396     remote_exec build "kill -9 ${testpid}"
 397
 398 }
 399
 400
 401 # Start with a fresh gdb
 402 #
 403 gdb_exit
 404 gdb_start
 405 gdb_reinitialize_dir $srcdir/$subdir
 406 gdb_load ${binfile}
 407
 408 # This is a test of gdb's ability to attach to a running process.
 409 #
 410 do_attach_tests
 411
 412 # Test attaching when the target is inside a system call
 413 #
 414 gdb_exit
 415 gdb_start
 416
 417 # this seems not necessary. - guo
 418 #
 419 # # Since we have moved the executable to /tmp, it will be hard for gdb
 420 # # to find the object file/executable to read the symbols.  This is
 421 # # a known limitation.  We try and get the name of the executable the
 422 # # process is running from a variety of methods, but none is foolproof.
 423 # # Using "dir" will get us the symbols.
 424 #
 425 # gdb_test "dir ./gdb.base" ".*" "set up directory before attach"
 426 gdb_reinitialize_dir $srcdir/$subdir
 427 do_call_attach_tests
 428
 429 # Until "set follow-fork-mode" and "catch fork" are implemented on
 430 # other targets...
 431 #
 432 if ![istarget "hppa*-hp-hpux*"] then {
 433    setup_xfail "*-*-*"
 434 }
 435
 436 # Cleanup the files placed in /tmp and the symlinks
 437   remote_exec build "rm -f ${binfile} ${binfile2} /tmp/attach1.${pid} /tmp/attach2.${pid}"
 438
 439 return 0