gdb/testsuite/gdb.base/attach.exp

   1 # Copyright 1997, 1999, 2002, 2003, 2004, 2007 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 if $tracelevel then {
  18     strace $tracelevel
  19 }
  20
  21 set prms_id 0
  22 set bug_id 0
  23
  24 # On HP-UX 11.0, this test is causing a process running the program
  25 # "attach" to be left around spinning.  Until we figure out why, I am
  26 # commenting out the test to avoid polluting tiamat (our 11.0 nightly
  27 # test machine) with these processes. RT
  28 #
  29 # Setting the magic bit in the target app should work.  I added a
  30 # "kill", and also a test for the R3 register warning.  JB
  31 if { [istarget "hppa*-*-hpux*"] } {
  32     return 0
  33 }
  34
  35 # On SPU, this test currently fails because "sleep" is not supported.
  36 if { [istarget "spu*-*-*"] } {
  37         return 0
  38 }
  39
  40 # are we on a target board
  41 if [is_remote target] then {
  42     return 0
  43 }
  44
  45 set testfile "attach"
  46 set srcfile  ${testfile}.c
  47 set srcfile2 ${testfile}2.c
  48 set binfile  ${objdir}/${subdir}/${testfile}
  49 set binfile2 ${objdir}/${subdir}/${testfile}2
  50 set escapedbinfile  [string_to_regexp ${objdir}/${subdir}/${testfile}]
  51
  52 #execute_anywhere "rm -f ${binfile} ${binfile2}"
  53 remote_exec build "rm -f ${binfile} ${binfile2}"
  54 # For debugging this test
  55 #
  56 #log_user 1
  57
  58 # build the first test case
  59 #
  60 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  61     untested attach.exp
  62     return -1
  63 }
  64
  65 # Build the in-system-call test
  66
  67 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile2}" "${binfile2}" executable {debug}] != "" } {
  68     untested attach.exp
  69     return -1
  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 escapedbinfile
  80     global srcfile
  81     global testfile
  82     global objdir
  83     global subdir
  84     global timeout
  85
  86     # Start the program running and then wait for a bit, to be sure
  87     # that it can be attached to.
  88
  89     set testpid [eval exec $binfile &]
  90     exec sleep 2
  91     if { [istarget "*-*-cygwin*"] } {
  92         # testpid is the Cygwin PID, GDB uses the Windows PID, which might be
  93         # different due to the way fork/exec works.
  94         set testpid [ exec ps -e | gawk "{ if (\$1 == $testpid) print \$4; }" ]
  95     }
  96
  97     # Verify that we cannot attach to nonsense.
  98
  99     set test "attach to nonsense is prohibited"
 100     gdb_test_multiple "attach abc" "$test" {
 101         -re "Illegal process-id: abc.*$gdb_prompt $" {
 102             pass "$test"
 103         }
 104         -re "Attaching to.*, process .*couldn't open /proc file.*$gdb_prompt $" {
 105             # Response expected from /proc-based systems.
 106             pass "$test"
 107         }
 108         -re "Can't attach to process..*$gdb_prompt $" {
 109             # Response expected on Cygwin
 110             pass "$test"
 111         }
 112         -re "Attaching to.*$gdb_prompt $" {
 113             fail "$test (bogus pid allowed)"
 114         }
 115     }
 116
 117     # Verify that we cannot attach to what appears to be a valid
 118     # process ID, but is a process that doesn't exist.  Traditionally,
 119     # most systems didn't have a process with ID 0, so we take that as
 120     # the default.  However, there are a few exceptions.
 121
 122     set boguspid 0
 123     if { [istarget "*-*-*bsd*"] } {
 124         # In FreeBSD 5.0, PID 0 is used for "swapper".  Use -1 instead
 125         # (which should have the desired effect on any version of
 126         # FreeBSD, and probably other *BSD's too).
 127         set boguspid -1
 128     }
 129     set test "attach to nonexistent process is prohibited"
 130     gdb_test_multiple "attach $boguspid" "$test" {
 131         -re "Attaching to.*, process $boguspid.*No such process.*$gdb_prompt $" {
 132             # Response expected on ptrace-based systems (i.e. HP-UX 10.20).
 133             pass "$test"
 134         }
 135         -re "Attaching to.*, process $boguspid failed.*Hint.*$gdb_prompt $" {
 136             # Response expected on ttrace-based systems (i.e. HP-UX 11.0).
 137             pass "$test"
 138         }
 139         -re "Attaching to.*, process $boguspid.*denied.*$gdb_prompt $" {
 140             pass "$test"
 141         }
 142         -re "Attaching to.*, process $boguspid.*not permitted.*$gdb_prompt $" {
 143             pass "$test"
 144         }
 145         -re "Attaching to.*, process .*couldn't open /proc file.*$gdb_prompt $" {
 146             # Response expected from /proc-based systems.
 147             pass "$test"
 148         }
 149         -re "Can't attach to process..*$gdb_prompt $" {
 150             # Response expected on Cygwin
 151             pass "$test"
 152         }
 153     }
 154
 155     # Verify that we can attach to the process by first giving its
 156     # executable name via the file command, and using attach with the
 157     # process ID.
 158
 159     # (Actually, the test system appears to do this automatically for
 160     # us.  So, we must also be prepared to be asked if we want to
 161     # discard an existing set of symbols.)
 162
 163     set test "set file, before attach1"
 164     gdb_test_multiple "file $binfile" "$test" {
 165         -re "Load new symbol table from.*y or n. $" {
 166             gdb_test "y" "Reading symbols from $escapedbinfile\.\.\.*done." \
 167                 "$test (re-read)"
 168         }
 169         -re "Reading symbols from $escapedbinfile\.\.\.*done.*$gdb_prompt $" {
 170             pass "$test"
 171         }
 172     }
 173
 174     set test "attach1, after setting file"
 175     gdb_test_multiple "attach $testpid" "$test" {
 176         -re "Attaching to program.*`?$escapedbinfile'?, process $testpid.*main.*at .*$srcfile:.*$gdb_prompt $" {
 177             pass "$test"
 178         }
 179         -re "Attaching to program.*`?$escapedbinfile\.exe'?, process $testpid.*\[Switching to thread $testpid\..*\].*$gdb_prompt $" {
 180             # Response expected on Cygwin
 181             pass "$test"
 182         }
 183     }
 184
 185     # Verify that we can "see" the variable "should_exit" in the
 186     # program, and that it is zero.
 187
 188     gdb_test "print should_exit" " = 0" "after attach1, print should_exit"
 189
 190     # Detach the process.
 191
 192     gdb_test "detach" \
 193         "Detaching from program: .*$escapedbinfile, process $testpid" \
 194         "attach1 detach"
 195
 196     # Wait a bit for gdb to finish detaching
 197
 198     exec sleep 5
 199
 200     # Purge the symbols from gdb's brain.  (We want to be certain the
 201     # next attach, which won't be preceded by a "file" command, is
 202     # really getting the executable file without our help.)
 203
 204     set old_timeout $timeout
 205     set timeout 15
 206     set test "attach1, purging symbols after detach"
 207     gdb_test_multiple "file" "$test" {
 208         -re "No executable file now.*Discard symbol table.*y or n. $" {
 209             gdb_test "y" "No symbol file now." "$test"
 210         }
 211     }
 212     set timeout $old_timeout
 213
 214     # Verify that we can attach to the process just by giving the
 215     # process ID.
 216
 217     set test "set file, before attach2"
 218     gdb_test_multiple "attach $testpid" "$test" {
 219         -re "Attaching to process $testpid.*Load new symbol table from \"$escapedbinfile\.exe\".*y or n. $" {
 220             # On Cygwin, the DLL's symbol tables are loaded prior to the
 221             # executable's symbol table.  This in turn always results in
 222             # asking the user for actually loading the symbol table of the
 223             # executable.
 224             gdb_test "y" "Reading symbols from $escapedbinfile\.\.\.*done." \
 225                 "$test (reset file)"
 226         }
 227         -re "Attaching to process $testpid.*Reading symbols from $escapedbinfile.*main.*at .*$gdb_prompt $" {
 228             pass "$test"
 229         }
 230     }
 231
 232     # Verify that we can modify the variable "should_exit" in the
 233     # program.
 234
 235     gdb_test "set should_exit=1" "" "after attach2, set should_exit"
 236
 237     # Verify that the modification really happened.
 238
 239     send_gdb "tbreak 19\n"
 240     gdb_expect {
 241         -re "Breakpoint .*at.*$srcfile, line 19.*$gdb_prompt $" {
 242             pass "after attach2, set tbreak postloop"
 243         }
 244         -re "$gdb_prompt $" {
 245             fail "after attach2, set tbreak postloop"
 246         }
 247         timeout {
 248             fail "(timeout) after attach2, set tbreak postloop"
 249         }
 250     }
 251     send_gdb "continue\n"
 252     gdb_expect {
 253         -re "main.*at.*$srcfile:19.*$gdb_prompt $" {
 254             pass "after attach2, reach tbreak postloop"
 255         }
 256         -re "$gdb_prompt $" {
 257             fail "after attach2, reach tbreak postloop"
 258         }
 259         timeout {
 260             fail "(timeout) after attach2, reach tbreak postloop"
 261         }
 262     }
 263
 264     # Allow the test process to exit, to cleanup after ourselves.
 265
 266     gdb_test "continue" "Program exited normally." "after attach2, exit"
 267
 268     # Make sure we don't leave a process around to confuse
 269     # the next test run (and prevent the compile by keeping
 270     # the text file busy), in case the "set should_exit" didn't
 271     # work.
 272
 273     remote_exec build "kill -9 ${testpid}"
 274
 275     # Start the program running and then wait for a bit, to be sure
 276     # that it can be attached to.
 277
 278     set testpid [eval exec $binfile &]
 279     exec sleep 2
 280     if { [istarget "*-*-cygwin*"] } {
 281         # testpid is the Cygwin PID, GDB uses the Windows PID, which might be
 282         # different due to the way fork/exec works.
 283         set testpid [ exec ps -e | gawk "{ if (\$1 == $testpid) print \$4; }" ]
 284     }
 285
 286     # Verify that we can attach to the process, and find its a.out
 287     # when we're cd'd to some directory that doesn't contain the
 288     # a.out.  (We use the source path set by the "dir" command.)
 289
 290     gdb_test "dir ${objdir}/${subdir}" "Source directories searched: .*" \
 291         "set source path"
 292
 293     gdb_test "cd /tmp" "Working directory /tmp." \
 294         "cd away from process working directory"
 295
 296     # Explicitly flush out any knowledge of the previous attachment.
 297
 298     set test "before attach3, flush symbols"
 299     gdb_test_multiple "symbol" "$test" {
 300         -re "Discard symbol table from.*y or n. $" {
 301             gdb_test "y" "No symbol file now." \
 302                 "$test"
 303         }
 304         -re "No symbol file now.*$gdb_prompt $" {
 305             pass "$test"
 306         }
 307     }
 308
 309     gdb_test "exec" "No executable file now." \
 310         "before attach3, flush exec"
 311
 312     gdb_test "attach $testpid" \
 313         "Attaching to process $testpid.*Reading symbols from $escapedbinfile.*main.*at .*" \
 314         "attach when process' a.out not in cwd"
 315
 316     set test "after attach3, exit"
 317     gdb_test_multiple "kill" "$test" {
 318         -re "Kill the program being debugged.*y or n. $" {
 319             gdb_test "y" "" "$test"
 320         }
 321     }
 322
 323     # Another "don't leave a process around"
 324     remote_exec build "kill -9 ${testpid}"
 325 }
 326
 327 proc do_call_attach_tests {} {
 328     global gdb_prompt
 329     global binfile2
 330
 331     # Start the program running and then wait for a bit, to be sure
 332     # that it can be attached to.
 333
 334     set testpid [eval exec $binfile2 &]
 335     exec sleep 2
 336     if { [istarget "*-*-cygwin*"] } {
 337         # testpid is the Cygwin PID, GDB uses the Windows PID, which might be
 338         # different due to the way fork/exec works.
 339         set testpid [ exec ps -e | gawk "{ if (\$1 == $testpid) print \$4; }" ]
 340     }
 341
 342     # Attach
 343
 344     gdb_test "file $binfile2" "" "force switch to gdb64, if necessary"
 345     set test "attach call"
 346     gdb_test_multiple "attach $testpid" "$test" {
 347         -re "warning: reading register.*I.*O error.*$gdb_prompt $" {
 348             fail "$test (read register error)"
 349         }
 350         -re "Attaching to.*process $testpid.*libc.*$gdb_prompt $" {
 351             pass "$test"
 352         }
 353         -re "Attaching to.*process $testpid.*\[Switching to thread $testpid\..*\].*$gdb_prompt $" {
 354             pass "$test"
 355         }
 356     }
 357
 358     # See if other registers are problems
 359
 360     set test "info other register"
 361     gdb_test_multiple "i r r3" "$test" {
 362         -re "warning: reading register.*$gdb_prompt $" {
 363             fail "$test"
 364         }
 365         -re "r3.*$gdb_prompt $" {
 366             pass "$test"
 367         }
 368     }
 369
 370     # Get rid of the process
 371
 372     gdb_test "p should_exit = 1"
 373     gdb_test "c" "Program exited normally."
 374
 375     # Be paranoid
 376
 377     remote_exec build "kill -9 ${testpid}"
 378 }
 379
 380
 381 # Start with a fresh gdb
 382
 383 gdb_exit
 384 gdb_start
 385 gdb_reinitialize_dir $srcdir/$subdir
 386 gdb_load ${binfile}
 387
 388 # This is a test of gdb's ability to attach to a running process.
 389
 390 do_attach_tests
 391
 392 # Test attaching when the target is inside a system call
 393
 394 gdb_exit
 395 gdb_start
 396
 397 gdb_reinitialize_dir $srcdir/$subdir
 398 do_call_attach_tests
 399
 400 return 0