gdb/testsuite/gdb.base/attach.exp

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