gdb/testsuite/gdb.base/attach.exp

   1 # Copyright 1997, 1999, 2002, 2003, 2004, 2007, 2008, 2009
   2 # Free Software Foundation, Inc.
   3
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 3 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  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 # are we on a target board
  36 if [is_remote target] then {
  37     return 0
  38 }
  39
  40 set testfile "attach"
  41 set srcfile  ${testfile}.c
  42 set srcfile2 ${testfile}2.c
  43 set binfile  ${objdir}/${subdir}/${testfile}
  44 set binfile2 ${objdir}/${subdir}/${testfile}2
  45 set escapedbinfile  [string_to_regexp ${objdir}/${subdir}/${testfile}]
  46
  47 #execute_anywhere "rm -f ${binfile} ${binfile2}"
  48 remote_exec build "rm -f ${binfile} ${binfile2}"
  49 # For debugging this test
  50 #
  51 #log_user 1
  52
  53 # build the first test case
  54 #
  55 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  56     untested attach.exp
  57     return -1
  58 }
  59
  60 # Build the in-system-call test
  61
  62 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile2}" "${binfile2}" executable {debug}] != "" } {
  63     untested attach.exp
  64     return -1
  65 }
  66
  67 if [get_compiler_info ${binfile}] {
  68     return -1
  69 }
  70
  71 proc do_attach_tests {} {
  72     global gdb_prompt
  73     global binfile
  74     global escapedbinfile
  75     global srcfile
  76     global testfile
  77     global objdir
  78     global subdir
  79     global timeout
  80
  81     # Start the program running and then wait for a bit, to be sure
  82     # that it can be attached to.
  83
  84     set testpid [eval exec $binfile &]
  85     exec sleep 2
  86     if { [istarget "*-*-cygwin*"] } {
  87         # testpid is the Cygwin PID, GDB uses the Windows PID, which might be
  88         # different due to the way fork/exec works.
  89         set testpid [ exec ps -e | gawk "{ if (\$1 == $testpid) print \$4; }" ]
  90     }
  91
  92     # Verify that we cannot attach to nonsense.
  93
  94     set test "attach to nonsense is prohibited"
  95     gdb_test_multiple "attach abc" "$test" {
  96         -re "Illegal process-id: abc.*$gdb_prompt $" {
  97             pass "$test"
  98         }
  99         -re "Attaching to.*, process .*couldn't open /proc file.*$gdb_prompt $" {
 100             # Response expected from /proc-based systems.
 101             pass "$test"
 102         }
 103         -re "Can't attach to process..*$gdb_prompt $" {
 104             # Response expected on Cygwin
 105             pass "$test"
 106         }
 107         -re "Attaching to.*$gdb_prompt $" {
 108             fail "$test (bogus pid allowed)"
 109         }
 110     }
 111
 112     # Verify that we cannot attach to what appears to be a valid
 113     # process ID, but is a process that doesn't exist.  Traditionally,
 114     # most systems didn't have a process with ID 0, so we take that as
 115     # the default.  However, there are a few exceptions.
 116
 117     set boguspid 0
 118     if { [istarget "*-*-*bsd*"] } {
 119         # In FreeBSD 5.0, PID 0 is used for "swapper".  Use -1 instead
 120         # (which should have the desired effect on any version of
 121         # FreeBSD, and probably other *BSD's too).
 122         set boguspid -1
 123     }
 124     set test "attach to nonexistent process is prohibited"
 125     gdb_test_multiple "attach $boguspid" "$test" {
 126         -re "Attaching to.*, process $boguspid.*No such process.*$gdb_prompt $" {
 127             # Response expected on ptrace-based systems (i.e. HP-UX 10.20).
 128             pass "$test"
 129         }
 130         -re "Attaching to.*, process $boguspid failed.*Hint.*$gdb_prompt $" {
 131             # Response expected on ttrace-based systems (i.e. HP-UX 11.0).
 132             pass "$test"
 133         }
 134         -re "Attaching to.*, process $boguspid.*denied.*$gdb_prompt $" {
 135             pass "$test"
 136         }
 137         -re "Attaching to.*, process $boguspid.*not permitted.*$gdb_prompt $" {
 138             pass "$test"
 139         }
 140         -re "Attaching to.*, process .*couldn't open /proc file.*$gdb_prompt $" {
 141             # Response expected from /proc-based systems.
 142             pass "$test"
 143         }
 144         -re "Can't attach to process..*$gdb_prompt $" {
 145             # Response expected on Cygwin
 146             pass "$test"
 147         }
 148     }
 149
 150     # Verify that we can attach to the process by first giving its
 151     # executable name via the file command, and using attach with the
 152     # process ID.
 153
 154     # (Actually, the test system appears to do this automatically for
 155     # us.  So, we must also be prepared to be asked if we want to
 156     # discard an existing set of symbols.)
 157
 158     set test "set file, before attach1"
 159     gdb_test_multiple "file $binfile" "$test" {
 160         -re "Load new symbol table from.*y or n. $" {
 161             gdb_test "y" "Reading symbols from $escapedbinfile\.\.\.*done." \
 162                 "$test (re-read)"
 163         }
 164         -re "Reading symbols from $escapedbinfile\.\.\.*done.*$gdb_prompt $" {
 165             pass "$test"
 166         }
 167     }
 168
 169     set test "attach1, after setting file"
 170     gdb_test_multiple "attach $testpid" "$test" {
 171         -re "Attaching to program.*`?$escapedbinfile'?, process $testpid.*main.*at .*$srcfile:.*$gdb_prompt $" {
 172             pass "$test"
 173         }
 174         -re "Attaching to program.*`?$escapedbinfile\.exe'?, process $testpid.*\[Switching to thread $testpid\..*\].*$gdb_prompt $" {
 175             # Response expected on Cygwin
 176             pass "$test"
 177         }
 178     }
 179
 180     # Verify that we can "see" the variable "should_exit" in the
 181     # program, and that it is zero.
 182
 183     gdb_test "print should_exit" " = 0" "after attach1, print should_exit"
 184
 185     # Detach the process.
 186
 187     gdb_test "detach" \
 188         "Detaching from program: .*$escapedbinfile, process $testpid" \
 189         "attach1 detach"
 190
 191     # Wait a bit for gdb to finish detaching
 192
 193     exec sleep 5
 194
 195     # Purge the symbols from gdb's brain.  (We want to be certain the
 196     # next attach, which won't be preceded by a "file" command, is
 197     # really getting the executable file without our help.)
 198
 199     set old_timeout $timeout
 200     set timeout 15
 201     set test "attach1, purging symbols after detach"
 202     gdb_test_multiple "file" "$test" {
 203         -re "No executable file now.*Discard symbol table.*y or n. $" {
 204             gdb_test "y" "No symbol file now." "$test"
 205         }
 206     }
 207     set timeout $old_timeout
 208
 209     # Verify that we can attach to the process just by giving the
 210     # process ID.
 211
 212     set test "set file, before attach2"
 213     gdb_test_multiple "attach $testpid" "$test" {
 214         -re "Attaching to process $testpid.*Load new symbol table from \"$escapedbinfile\.exe\".*y or n. $" {
 215             # On Cygwin, the DLL's symbol tables are loaded prior to the
 216             # executable's symbol table.  This in turn always results in
 217             # asking the user for actually loading the symbol table of the
 218             # executable.
 219             gdb_test "y" "Reading symbols from $escapedbinfile\.\.\.*done." \
 220                 "$test (reset file)"
 221         }
 222         -re "Attaching to process $testpid.*Reading symbols from $escapedbinfile.*main.*at .*$gdb_prompt $" {
 223             pass "$test"
 224         }
 225     }
 226
 227     # Verify that we can modify the variable "should_exit" in the
 228     # program.
 229
 230     gdb_test "set should_exit=1" "" "after attach2, set should_exit"
 231
 232     # Verify that the modification really happened.
 233
 234     send_gdb "tbreak 19\n"
 235     gdb_expect {
 236         -re "Temporary breakpoint .*at.*$srcfile, line 19.*$gdb_prompt $" {
 237             pass "after attach2, set tbreak postloop"
 238         }
 239         -re "$gdb_prompt $" {
 240             fail "after attach2, set tbreak postloop"
 241         }
 242         timeout {
 243             fail "(timeout) after attach2, set tbreak postloop"
 244         }
 245     }
 246     send_gdb "continue\n"
 247     gdb_expect {
 248         -re "main.*at.*$srcfile:19.*$gdb_prompt $" {
 249             pass "after attach2, reach tbreak postloop"
 250         }
 251         -re "$gdb_prompt $" {
 252             fail "after attach2, reach tbreak postloop"
 253         }
 254         timeout {
 255             fail "(timeout) after attach2, reach tbreak postloop"
 256         }
 257     }
 258
 259     # Allow the test process to exit, to cleanup after ourselves.
 260
 261     gdb_test "continue" "Program exited normally." "after attach2, exit"
 262
 263     # Make sure we don't leave a process around to confuse
 264     # the next test run (and prevent the compile by keeping
 265     # the text file busy), in case the "set should_exit" didn't
 266     # work.
 267
 268     remote_exec build "kill -9 ${testpid}"
 269
 270     # Start the program running and then wait for a bit, to be sure
 271     # that it can be attached to.
 272
 273     set testpid [eval exec $binfile &]
 274     exec sleep 2
 275     if { [istarget "*-*-cygwin*"] } {
 276         # testpid is the Cygwin PID, GDB uses the Windows PID, which might be
 277         # different due to the way fork/exec works.
 278         set testpid [ exec ps -e | gawk "{ if (\$1 == $testpid) print \$4; }" ]
 279     }
 280
 281     # Verify that we can attach to the process, and find its a.out
 282     # when we're cd'd to some directory that doesn't contain the
 283     # a.out.  (We use the source path set by the "dir" command.)
 284
 285     gdb_test "dir ${objdir}/${subdir}" "Source directories searched: .*" \
 286         "set source path"
 287
 288     gdb_test "cd /tmp" "Working directory /tmp." \
 289         "cd away from process working directory"
 290
 291     # Explicitly flush out any knowledge of the previous attachment.
 292
 293     set test "before attach3, flush symbols"
 294     gdb_test_multiple "symbol" "$test" {
 295         -re "Discard symbol table from.*y or n. $" {
 296             gdb_test "y" "No symbol file now." \
 297                 "$test"
 298         }
 299         -re "No symbol file now.*$gdb_prompt $" {
 300             pass "$test"
 301         }
 302     }
 303
 304     gdb_test "exec" "No executable file now." \
 305         "before attach3, flush exec"
 306
 307     gdb_test "attach $testpid" \
 308         "Attaching to process $testpid.*Reading symbols from $escapedbinfile.*main.*at .*" \
 309         "attach when process' a.out not in cwd"
 310
 311     set test "after attach3, exit"
 312     gdb_test_multiple "kill" "$test" {
 313         -re "Kill the program being debugged.*y or n. $" {
 314             gdb_test "y" "" "$test"
 315         }
 316     }
 317
 318     # Another "don't leave a process around"
 319     remote_exec build "kill -9 ${testpid}"
 320 }
 321
 322 proc do_call_attach_tests {} {
 323     global gdb_prompt
 324     global binfile2
 325
 326     # Start the program running and then wait for a bit, to be sure
 327     # that it can be attached to.
 328
 329     set testpid [eval exec $binfile2 &]
 330     exec sleep 2
 331     if { [istarget "*-*-cygwin*"] } {
 332         # testpid is the Cygwin PID, GDB uses the Windows PID, which might be
 333         # different due to the way fork/exec works.
 334         set testpid [ exec ps -e | gawk "{ if (\$1 == $testpid) print \$4; }" ]
 335     }
 336
 337     # Attach
 338
 339     gdb_test "file $binfile2" "" "force switch to gdb64, if necessary"
 340     set test "attach call"
 341     gdb_test_multiple "attach $testpid" "$test" {
 342         -re "warning: reading register.*I.*O error.*$gdb_prompt $" {
 343             fail "$test (read register error)"
 344         }
 345         -re "Attaching to.*process $testpid.*libc.*$gdb_prompt $" {
 346             pass "$test"
 347         }
 348         -re "Attaching to.*process $testpid.*\[Switching to thread $testpid\..*\].*$gdb_prompt $" {
 349             pass "$test"
 350         }
 351     }
 352
 353     # See if other registers are problems
 354
 355     set test "info other register"
 356     gdb_test_multiple "i r r3" "$test" {
 357         -re "warning: reading register.*$gdb_prompt $" {
 358             fail "$test"
 359         }
 360         -re "r3.*$gdb_prompt $" {
 361             pass "$test"
 362         }
 363     }
 364
 365     # Get rid of the process
 366
 367     gdb_test "p should_exit = 1"
 368     gdb_test "c" "Program exited normally."
 369
 370     # Be paranoid
 371
 372     remote_exec build "kill -9 ${testpid}"
 373 }
 374
 375
 376 # Start with a fresh gdb
 377
 378 gdb_exit
 379 gdb_start
 380 gdb_reinitialize_dir $srcdir/$subdir
 381 gdb_load ${binfile}
 382
 383 # This is a test of gdb's ability to attach to a running process.
 384
 385 do_attach_tests
 386
 387 # Test attaching when the target is inside a system call
 388
 389 gdb_exit
 390 gdb_start
 391
 392 gdb_reinitialize_dir $srcdir/$subdir
 393 do_call_attach_tests
 394
 395 return 0