gdb/testsuite/gdb.base/dbx.exp

   1 # Copyright 1998-2020 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 3 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, see <http://www.gnu.org/licenses/>.  */
  15
  16
  17 standard_testfile average.c sum.c
  18
  19 if {[build_executable $testfile.exp $testfile \
  20          [list $srcfile $srcfile2] debug] == -1} {
  21     untested "failed to compile"
  22     return -1
  23 }
  24
  25 #
  26 # start gdb -- start gdb running, default procedure
  27 #
  28 proc dbx_gdb_start { } {
  29     global verbose
  30     global GDB
  31     global INTERNAL_GDBFLAGS GDBFLAGS
  32     global prompt
  33     global spawn_id
  34     global timeout
  35     verbose "Spawning $GDB -dbx $INTERNAL_GDBFLAGS $GDBFLAGS"
  36
  37     if { [which $GDB] == 0 } then {
  38         perror "$GDB does not exist."
  39         exit 1
  40     }
  41
  42     set oldtimeout $timeout
  43     set timeout [expr "$timeout + 60"]
  44     eval "spawn $GDB -dbx $INTERNAL_GDBFLAGS $GDBFLAGS"
  45     gdb_expect {
  46         -re ".*\r\n$gdb_prompt $" {
  47             verbose "GDB initialized."
  48         }
  49         -re "$prompt $" {
  50             perror "GDB never initialized."
  51             return -1
  52         }
  53         timeout         {
  54             perror "(timeout) GDB never initialized."
  55             return -1
  56         }
  57     }
  58     set timeout $oldtimeout
  59     # force the height to "unlimited", so no pagers get used
  60     send_gdb "set height 0\n"
  61     gdb_expect {
  62         -re ".*$prompt $" {
  63             verbose "Setting height to 0." 2
  64         }
  65         timeout {
  66             warning "Couldn't set the height to 0."
  67         }
  68     }
  69     # force the width to "unlimited", so no wraparound occurs
  70     send_gdb "set width 0\n"
  71     gdb_expect {
  72         -re ".*$prompt $" {
  73             verbose "Setting width to 0." 2
  74         }
  75         timeout {
  76             warning "Couldn't set the width to 0."
  77         }
  78     }
  79 }
  80
  81
  82 proc dbx_reinitialize_dir { subdir } {
  83     global gdb_prompt
  84
  85    send_gdb "use\n"
  86     gdb_expect {
  87         -re "Reinitialize source path to empty.*y or n. " {
  88             send_gdb "y\n"
  89             gdb_expect {
  90                 -re "Source directories searched.*$gdb_prompt $" {
  91                     send_gdb "use $subdir\n"
  92                     gdb_expect {
  93                         -re "Source directories searched.*$gdb_prompt $" {
  94                             verbose "Dir set to $subdir"
  95                         }
  96                         -re ".*$gdb_prompt $" {
  97                             perror "Dir \"$subdir\" failed."
  98                         }
  99                     }
 100                 }
 101                 -re ".*$gdb_prompt $" {
 102                     perror "Dir \"$subdir\" failed."
 103                 }
 104             }
 105         }
 106         -re ".*$gdb_prompt $" {
 107             perror "Dir \"$subdir\" failed."
 108         }
 109     }
 110 }
 111
 112 # In "testsuite/config/unix-gdb.exp", the routine "gdb_load"
 113 # is defined as "gdb_file_cmd".  The binding of "gdb_file_cmd"
 114 # is done at invocation time.  Before this file is processed,
 115 # it binds to the definition in "testsuite/lib/gdb.exp"; after
 116 # this file is processed, it binds to this definition.
 117 # TCL lets us overrides a previous routine definition without a
 118 # warning (isn't that special?).
 119 #
 120 # This means that tests before use "file" to load a target, and
 121 # tests afterwards use the pair "symbol-file" "exec-file".
 122 #
 123 # I'm leaving it as it is for now because at the moment it
 124 # is the only test we have of the use of the combination of
 125 # "symbol-file" and "exec-file" to load a debugging target (the
 126 # other definition uses "file".
 127 #
 128 # Symbol-file and exec-file should be tested explicitly, not
 129 # as a side effect of running a particular test (in this case,
 130 # "testsuite/gdb.compat/dbx.exp").
 131 #
 132 # CM: Renamed the procedure so it does not override the orginal file name.
 133 #     Having the test suite change behavior depending on the tests run makes
 134 #     it extremely difficult to reproduce errors. I've also added a
 135 #     "dbx_gdb_load" procedure.  This and only this test will call these
 136 #     procedures now. I also added an "expect" to the "send exec-file" line.
 137 #     The "expect" waits for a prompt to appear. Otherwise, if the tests run
 138 #     too quickly, the caller could send another command before the prompt
 139 #     of this command returns, causing the test to get out of sync and fail
 140 #     seemingly randomly or only on a loaded system.
 141 #
 142 # Problem is, though, that the testsuite config files can override the definition of
 143 # gdb_load (without notice, as was mentioned above). Unfortunately, the gdb_load proc
 144 # that was copied into this test was a copy of the unix native version.
 145 #
 146 # The real problem that we're attempting to solve is how to load an exec and symbol
 147 # file into gdb for a dbx session. So why not just override gdb_file_cmd with the
 148 # right sequence of events, allowing gdb_load to do its normal thing? This way
 149 # remotes and simulators will work, too.
 150 #
 151 # [drow 2002-03-30]: We can restore the old gdb_file_cmd afterwards, though.
 152 set old_gdb_file_cmd_args [info args gdb_file_cmd]
 153 set old_gdb_file_cmd_body [info body gdb_file_cmd]
 154
 155 proc gdb_file_cmd {arg} {
 156     global verbose
 157     global loadpath
 158     global loadfile
 159     global GDB
 160     global gdb_prompt
 161     global spawn_id
 162     upvar timeout timeout
 163     global last_loaded_file
 164
 165     set last_loaded_file $arg
 166
 167     if [is_remote host] {
 168         set arg [remote_download host $arg]
 169         if { $arg == "" } {
 170             error "download failed"
 171             return -1
 172         }
 173     }
 174
 175     send_gdb "symbol-file $arg\n"
 176     gdb_expect {
 177         -re "Reading symbols from.*$gdb_prompt $" {
 178             verbose "\t\tLoaded $arg into the $GDB"
 179             send_gdb "exec-file $arg\n"
 180             gdb_expect {
 181                 -re "A program is being debugged already.*Kill it.*y or n. $" {
 182                     send_gdb "y\n"
 183                         verbose "\t\tKilling previous program being debugged"
 184                     exp_continue
 185                 }
 186                 -re ".*$gdb_prompt $" {
 187                     verbose "\t\tLoaded $arg with new symbol table into $GDB"
 188                     return 0
 189                 }
 190                 timeout {
 191                     perror "(timeout) Couldn't load $arg"
 192                     return -1
 193                 }
 194             }
 195             return 0
 196         }
 197         -re "has no symbol-table.*$gdb_prompt $" {
 198             perror "$arg wasn't compiled with \"-g\""
 199             return -1
 200         }
 201         -re "Load new symbol table from \".*\".*y or n. $" {
 202             send_gdb "y\n"
 203             exp_continue
 204         }
 205         -re ".*No such file or directory.*$gdb_prompt $" {
 206             perror "($arg) No such file or directory\n"
 207             return -1
 208         }
 209         -re "$gdb_prompt $" {
 210             perror "couldn't load $arg into $GDB."
 211             return -1
 212             }
 213         timeout {
 214             perror "couldn't load $arg into $GDB (timed out)."
 215             return -1
 216         }
 217         eof {
 218             # This is an attempt to detect a core dump, but seems not to
 219             # work.  Perhaps we need to match .* followed by eof, in which
 220             # expect does not seem to have a way to do that.
 221             perror "couldn't load $arg into $GDB (end of file)."
 222             return -1
 223         }
 224     }
 225 }
 226
 227 #
 228 #test_breakpoints
 229 #
 230 proc test_breakpoints { } {
 231     set stop_line [gdb_get_line_number "stop-in-main"]
 232     gdb_test "stop in main" "Breakpoint.*at.*: file.*average\.c, line $stop_line\."
 233     gdb_test "status" "Num.*Type.*Disp.*Enb.*Address.*What\r\n1\[ \r\]+breakpoint\[ \r\]+keep y.*in main at.*average\.c:$stop_line.*"
 234     set stop_line [gdb_get_line_number "stop-at-call"]
 235     gdb_test "stop at average.c:$stop_line" "Breakpoint.*at.*: file.*average\.c, line $stop_line.*"
 236     gdb_test "stop in average.c:$stop_line" "Usage: stop in <function . address>"
 237     gdb_test "stop at main" "Usage: stop at LINE"
 238 }
 239
 240 #
 241 #test_assign
 242 #
 243 proc test_assign { } {
 244     global decimal
 245     global gdb_prompt
 246
 247     gdb_run_cmd
 248     set test "running to main"
 249     gdb_test_multiple "" $test {
 250         -re "Break.* at .*:$decimal.*$gdb_prompt $" {
 251             pass $test
 252         }
 253         -re "Breakpoint \[0-9\]*, \[0-9xa-f\]* in .*$gdb_prompt $" {
 254             pass $test
 255         }
 256     }
 257     send_gdb "assign first=1\n"
 258     gdb_expect {
 259       -re "No symbol \"first\" in current context.*$" { fail "assign first" }
 260       -re "$gdb_prompt $" { pass "assign first" }
 261       timeout { fail "assign first (timeout)" }
 262     }
 263     gdb_test "print first" ".1 = 1"
 264 }
 265
 266 #
 267 #test_whereis
 268 #
 269 proc test_whereis { } {
 270     gdb_test "whereis my_list" "All variables matching regular expression \"my_list\":\r\n\r\nFile.*average\.c:\r\n.*\tstatic int my_list\\\[10\\\];"
 271 }
 272
 273 #
 274 #test_func
 275 #
 276 proc test_func { } {
 277     global decimal
 278     global srcfile2
 279     gdb_test "cont" ".*" "cont 1"
 280     gdb_test "step" ".*"
 281     gdb_test "func sum" "'sum' not within current stack frame\."
 282     set stop_line [gdb_get_line_number "stop-in-sum" $srcfile2]
 283     gdb_test "stop in sum" "Breakpoint.*at.*: file.*sum\.c, line $stop_line\."
 284     gdb_test "cont" ".*" "cont 2"
 285     gdb_test "func print_average" ".*in print_average.*\\(list=.*, low=0, high=6\\).*at.*average\.c:${decimal}\r\n${decimal}\[ \t\]+total = sum\\(list, low, high\\);"
 286 }
 287
 288 # Start with a fresh gdb.
 289
 290 gdb_exit
 291 global GDBFLAGS
 292 set saved_gdbflags $GDBFLAGS
 293
 294 set GDBFLAGS "$GDBFLAGS --dbx"
 295 gdb_start
 296 dbx_reinitialize_dir $srcdir/$subdir
 297 gdb_load ${binfile}
 298
 299 test_breakpoints
 300 test_assign
 301 test_whereis
 302 gdb_test "file average.c:1" "1\[ \t\]+/. This is a sample program.*"
 303 test_func
 304
 305 #exit and cleanup
 306 gdb_exit
 307
 308 set GDBFLAGS $saved_gdbflags
 309 eval proc gdb_file_cmd {$old_gdb_file_cmd_args} {$old_gdb_file_cmd_body}
 310
 311 return 0