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