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