gdb/testsuite/lib/mi-support.exp

   1 # Copyright 1999-2015 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 # This file was based on a file written by Fred Fish. (fnf@cygnus.com)
  17
  18 # Test setup routines that work with the MI interpreter.
  19
  20 load_lib gdb-utils.exp
  21
  22 # The variable mi_gdb_prompt is a regexp which matches the gdb mi prompt.
  23 # Set it if it is not already set.
  24 global mi_gdb_prompt
  25 if ![info exists mi_gdb_prompt] then {
  26     set mi_gdb_prompt "\[(\]gdb\[)\] \r\n"
  27 }
  28
  29 global mi_inferior_tty_name
  30
  31 set MIFLAGS "-i=mi"
  32
  33 set thread_selected_re "=thread-selected,id=\"\[0-9\]+\"\r\n"
  34 set gdbindex_warning_re "&\"warning: Skipping \[^\r\n\]+ \.gdb_index section in \[^\r\n\]+\"\r\n(?:&\"\\\\n\"\r\n)?"
  35 set library_loaded_re "=library-loaded\[^\n\]+\"\r\n(?:$gdbindex_warning_re)?"
  36 set breakpoint_re "=(?:breakpoint-created|breakpoint-deleted)\[^\n\]+\"\r\n"
  37
  38 #
  39 # mi_gdb_exit -- exit the GDB, killing the target program if necessary
  40 #
  41 proc mi_gdb_exit {} {
  42     catch mi_uncatched_gdb_exit
  43 }
  44
  45 proc mi_uncatched_gdb_exit {} {
  46     global GDB
  47     global INTERNAL_GDBFLAGS GDBFLAGS
  48     global verbose
  49     global gdb_spawn_id
  50     global gdb_prompt
  51     global mi_gdb_prompt
  52     global MIFLAGS
  53
  54     gdb_stop_suppressing_tests
  55
  56     if { [info procs sid_exit] != "" } {
  57         sid_exit
  58     }
  59
  60     if ![info exists gdb_spawn_id] {
  61         return
  62     }
  63
  64     verbose "Quitting $GDB $INTERNAL_GDBFLAGS $GDBFLAGS $MIFLAGS"
  65
  66     if { [is_remote host] && [board_info host exists fileid] } {
  67         send_gdb "999-gdb-exit\n"
  68         gdb_expect 10 {
  69             -re "y or n" {
  70                 send_gdb "y\n"
  71                 exp_continue
  72             }
  73             -re "Undefined command.*$gdb_prompt $" {
  74                 send_gdb "quit\n"
  75                 exp_continue
  76             }
  77             -re "DOSEXIT code" { }
  78             default { }
  79         }
  80     }
  81
  82     if ![is_remote host] {
  83         remote_close host
  84     }
  85     unset gdb_spawn_id
  86 }
  87
  88 #
  89 # default_mi_gdb_start [INFERIOR_PTY] -- start gdb running, default procedure
  90 #
  91 # INFERIOR_PTY should be set to separate-inferior-tty to have the inferior work
  92 # with it's own PTY. If set to same-inferior-tty, the inferior shares GDB's PTY.
  93 # The default value is same-inferior-tty.
  94 #
  95 # When running over NFS, particularly if running many simultaneous
  96 # tests on different hosts all using the same server, things can
  97 # get really slow.  Give gdb at least 3 minutes to start up.
  98 #
  99 proc default_mi_gdb_start { args } {
 100     global verbose use_gdb_stub
 101     global GDB
 102     global INTERNAL_GDBFLAGS GDBFLAGS
 103     global gdb_prompt
 104     global mi_gdb_prompt
 105     global timeout
 106     global gdb_spawn_id inferior_spawn_id
 107     global MIFLAGS
 108
 109     gdb_stop_suppressing_tests
 110     set inferior_pty no-tty
 111
 112     # Set the default value, it may be overriden later by specific testfile.
 113     set use_gdb_stub [target_info exists use_gdb_stub]
 114
 115     if { [llength $args] == 1} {
 116         set inferior_pty [lindex $args 0]
 117     }
 118
 119     set separate_inferior_pty [string match $inferior_pty separate-inferior-tty]
 120
 121     # Start SID.
 122     if { [info procs sid_start] != "" } {
 123         verbose "Spawning SID"
 124         sid_start
 125     }
 126
 127     verbose "Spawning $GDB $INTERNAL_GDBFLAGS $GDBFLAGS $MIFLAGS"
 128
 129     if [info exists gdb_spawn_id] {
 130         return 0
 131     }
 132
 133     if ![is_remote host] {
 134         if { [which $GDB] == 0 } then {
 135             perror "$GDB does not exist."
 136             exit 1
 137         }
 138     }
 139
 140     set res [remote_spawn host "$GDB $INTERNAL_GDBFLAGS $GDBFLAGS $MIFLAGS [host_info gdb_opts]"]
 141     if { $res < 0 || $res == "" } {
 142         perror "Spawning $GDB failed."
 143         return 1
 144     }
 145     gdb_expect {
 146         -re "~\"GNU.*\r\n~\".*$mi_gdb_prompt$" {
 147             # We have a new format mi startup prompt.  If we are
 148             # running mi1, then this is an error as we should be
 149             # using the old-style prompt.
 150             if { $MIFLAGS == "-i=mi1" } {
 151                 perror "(mi startup) Got unexpected new mi prompt."
 152                 remote_close host
 153                 return -1
 154             }
 155             verbose "GDB initialized."
 156         }
 157         -re "\[^~\].*$mi_gdb_prompt$" {
 158             # We have an old format mi startup prompt.  If we are
 159             # not running mi1, then this is an error as we should be
 160             # using the new-style prompt.
 161             if { $MIFLAGS != "-i=mi1" } {
 162                 perror "(mi startup) Got unexpected old mi prompt."
 163                 remote_close host
 164                 return -1
 165             }
 166             verbose "GDB initialized."
 167         }
 168         -re ".*unrecognized option.*for a complete list of options." {
 169             untested "Skip mi tests (not compiled with mi support)."
 170             remote_close host
 171             return -1
 172         }
 173         -re ".*Interpreter `mi' unrecognized." {
 174             untested "Skip mi tests (not compiled with mi support)."
 175             remote_close host
 176             return -1
 177         }
 178         timeout {
 179             perror "(timeout) GDB never initialized after 10 seconds."
 180             remote_close host
 181             return -1
 182         }
 183     }
 184     set gdb_spawn_id $res
 185
 186     # FIXME: mi output does not go through pagers, so these can be removed.
 187     # force the height to "unlimited", so no pagers get used
 188     send_gdb "100-gdb-set height 0\n"
 189     gdb_expect 10 {
 190         -re ".*100-gdb-set height 0\r\n100\\\^done\r\n$mi_gdb_prompt$" {
 191             verbose "Setting height to 0." 2
 192         }
 193         timeout {
 194             warning "Couldn't set the height to 0"
 195         }
 196     }
 197     # force the width to "unlimited", so no wraparound occurs
 198     send_gdb "101-gdb-set width 0\n"
 199     gdb_expect 10 {
 200         -re ".*101-gdb-set width 0\r\n101\\\^done\r\n$mi_gdb_prompt$" {
 201             verbose "Setting width to 0." 2
 202         }
 203         timeout {
 204             warning "Couldn't set the width to 0."
 205         }
 206     }
 207
 208     # Create the new PTY for the inferior process.
 209     if { $separate_inferior_pty } {
 210         spawn -pty
 211         global mi_inferior_tty_name
 212         set inferior_spawn_id $spawn_id
 213         set mi_inferior_tty_name $spawn_out(slave,name)
 214
 215         send_gdb "102-inferior-tty-set $mi_inferior_tty_name\n"
 216         gdb_expect 10 {
 217             -re ".*102\\\^done\r\n$mi_gdb_prompt$" {
 218                 verbose "redirect inferior output to new terminal device."
 219             }
 220             timeout {
 221                 warning "Couldn't redirect inferior output." 2
 222             }
 223         }
 224     }
 225
 226     if {![info exists inferior_spawn_id]} {
 227         set inferior_spawn_id $gdb_spawn_id
 228     }
 229
 230     mi_detect_async
 231
 232     return 0
 233 }
 234
 235 #
 236 # Overridable function. You can override this function in your
 237 # baseboard file.
 238 #
 239 proc mi_gdb_start { args } {
 240   return [default_mi_gdb_start $args]
 241 }
 242
 243 # Many of the tests depend on setting breakpoints at various places and
 244 # running until that breakpoint is reached.  At times, we want to start
 245 # with a clean-slate with respect to breakpoints, so this utility proc
 246 # lets us do this without duplicating this code everywhere.
 247 #
 248
 249 proc mi_delete_breakpoints {} {
 250     global mi_gdb_prompt
 251
 252 # FIXME: The mi operation won't accept a prompt back and will use the 'all' arg
 253     send_gdb "102-break-delete\n"
 254     gdb_expect 30 {
 255          -re "Delete all breakpoints.*y or n.*$" {
 256             send_gdb "y\n"
 257             exp_continue
 258          }
 259          -re "102-break-delete\r\n102\\\^done\r\n$mi_gdb_prompt$" {
 260              # This happens if there were no breakpoints
 261          }
 262          timeout { perror "Delete all breakpoints in mi_delete_breakpoints (timeout)" ; return }
 263     }
 264
 265 # The correct output is not "No breakpoints or watchpoints." but an
 266 # empty BreakpointTable. Also, a query is not acceptable with mi.
 267     send_gdb "103-break-list\n"
 268     gdb_expect 30 {
 269          -re "103-break-list\r\n103\\\^done,BreakpointTable=\{\}\r\n$mi_gdb_prompt$" {}
 270          -re "103-break-list\r\n103\\\^done,BreakpointTable=\{nr_rows=\".\",nr_cols=\".\",hdr=\\\[\{width=\".*\",alignment=\".*\",col_name=\"number\",colhdr=\"Num\"\}.*colhdr=\"Type\".*colhdr=\"Disp\".*colhdr=\"Enb\".*colhdr=\"Address\".*colhdr=\"What\".*\\\],body=\\\[\\\]\}\r\n$mi_gdb_prompt$" {}
 271          -re "103-break-list\r\n103\\\^doneNo breakpoints or watchpoints.\r\n\r\n$mi_gdb_prompt$" {warning "Unexpected console text received"}
 272          -re "$mi_gdb_prompt$" { perror "Breakpoints not deleted" ; return }
 273          -re "Delete all breakpoints.*or n.*$" {
 274             warning "Unexpected prompt for breakpoints deletion"
 275             send_gdb "y\n"
 276             exp_continue
 277         }
 278          timeout { perror "-break-list (timeout)" ; return }
 279     }
 280 }
 281
 282 proc mi_gdb_reinitialize_dir { subdir } {
 283     global mi_gdb_prompt
 284     global MIFLAGS
 285
 286     global suppress_flag
 287     if { $suppress_flag } {
 288         return
 289     }
 290
 291     if [is_remote host] {
 292         return ""
 293     }
 294
 295     if { $MIFLAGS == "-i=mi1" } {
 296       send_gdb "104-environment-directory\n"
 297       gdb_expect 60 {
 298         -re ".*Reinitialize source path to empty.*y or n. " {
 299             warning "Got confirmation prompt for dir reinitialization."
 300             send_gdb "y\n"
 301             gdb_expect 60 {
 302                 -re "$mi_gdb_prompt$" {}
 303                 timeout {error "Dir reinitialization failed (timeout)"}
 304             }
 305         }
 306         -re "$mi_gdb_prompt$" {}
 307           timeout {error "Dir reinitialization failed (timeout)"}
 308       }
 309     } else {
 310         send_gdb "104-environment-directory -r\n"
 311         gdb_expect 60 {
 312             -re "104\\\^done,source-path=.*\r\n$mi_gdb_prompt$" {}
 313             -re "$mi_gdb_prompt$" {}
 314             timeout {error "Dir reinitialization failed (timeout)"}
 315       }
 316     }
 317
 318     send_gdb "105-environment-directory $subdir\n"
 319     gdb_expect 60 {
 320         -re "Source directories searched.*$mi_gdb_prompt$" {
 321             verbose "Dir set to $subdir"
 322         }
 323         -re "105\\\^done.*\r\n$mi_gdb_prompt$" {
 324             # FIXME: We return just the prompt for now.
 325             verbose "Dir set to $subdir"
 326             # perror "Dir \"$subdir\" failed."
 327         }
 328     }
 329 }
 330
 331 # Send GDB the "target" command.
 332 # FIXME: Some of these patterns are not appropriate for MI.  Based on
 333 # config/monitor.exp:gdb_target_command.
 334 proc mi_gdb_target_cmd { targetname serialport } {
 335     global mi_gdb_prompt
 336
 337     set serialport_re [string_to_regexp $serialport]
 338     for {set i 1} {$i <= 3} {incr i} {
 339         send_gdb "47-target-select $targetname $serialport\n"
 340         gdb_expect 60 {
 341             -re "47\\^connected.*$mi_gdb_prompt" {
 342                 verbose "Set target to $targetname"
 343                 return 0
 344             }
 345             -re "unknown host.*$mi_gdb_prompt" {
 346                 verbose "Couldn't look up $serialport"
 347             }
 348             -re "Couldn't establish connection to remote.*$mi_gdb_prompt$" {
 349                 verbose "Connection failed"
 350             }
 351             -re "Remote MIPS debugging.*$mi_gdb_prompt$" {
 352                 verbose "Set target to $targetname"
 353                 return 0
 354             }
 355             -re "Remote debugging using .*$serialport_re.*$mi_gdb_prompt$" {
 356                 verbose "Set target to $targetname"
 357                 return 0
 358             }
 359             -re "Remote target $targetname connected to.*$mi_gdb_prompt$" {
 360                 verbose "Set target to $targetname"
 361                 return 0
 362             }
 363             -re "Connected to.*$mi_gdb_prompt$" {
 364                 verbose "Set target to $targetname"
 365                 return 0
 366             }
 367             -re "Ending remote.*$mi_gdb_prompt$" { }
 368             -re "Connection refused.*$mi_gdb_prompt$" {
 369                 verbose "Connection refused by remote target.  Pausing, and trying again."
 370                 sleep 5
 371                 continue
 372             }
 373             -re "Non-stop mode requested, but remote does not support non-stop.*$mi_gdb_prompt" {
 374                 unsupported "Non-stop mode not supported"
 375                 return 1
 376             }
 377             -re "Timeout reading from remote system.*$mi_gdb_prompt$" {
 378                 verbose "Got timeout error from gdb."
 379             }
 380             timeout {
 381                 send_gdb "\ 3"
 382                 break
 383             }
 384         }
 385     }
 386     return 1
 387 }
 388
 389 #
 390 # load a file into the debugger (file command only).
 391 # return a -1 if anything goes wrong.
 392 #
 393 proc mi_gdb_file_cmd { arg } {
 394     global verbose
 395     global loadpath
 396     global loadfile
 397     global GDB
 398     global mi_gdb_prompt
 399     global last_loaded_file
 400     upvar timeout timeout
 401
 402     set last_loaded_file $arg
 403
 404     if [is_remote host] {
 405         set arg [remote_download host $arg]
 406         if { $arg == "" } {
 407             error "download failed"
 408             return -1
 409         }
 410     }
 411
 412 # FIXME: Several of these patterns are only acceptable for console
 413 # output.  Queries are an error for mi.
 414     send_gdb "105-file-exec-and-symbols $arg\n"
 415     gdb_expect 120 {
 416         -re "Reading symbols from.*done.*$mi_gdb_prompt$" {
 417             verbose "\t\tLoaded $arg into the $GDB"
 418             return 0
 419         }
 420         -re "has no symbol-table.*$mi_gdb_prompt$" {
 421             perror "$arg wasn't compiled with \"-g\""
 422             return -1
 423         }
 424         -re "Load new symbol table from \".*\".*y or n. $" {
 425             send_gdb "y\n"
 426             gdb_expect 120 {
 427                 -re "Reading symbols from.*done.*$mi_gdb_prompt$" {
 428                     verbose "\t\tLoaded $arg with new symbol table into $GDB"
 429                     # All OK
 430                 }
 431                 timeout {
 432                     perror "(timeout) Couldn't load $arg, other program already loaded."
 433                     return -1
 434                 }
 435             }
 436         }
 437         -re "No such file or directory.*$mi_gdb_prompt$" {
 438             perror "($arg) No such file or directory\n"
 439             return -1
 440         }
 441         -re "105-file-exec-and-symbols .*\r\n105\\\^done\r\n$mi_gdb_prompt$" {
 442             # We (MI) are just giving the prompt back for now, instead of giving
 443             # some acknowledgement.
 444             return 0
 445         }
 446         timeout {
 447             perror "couldn't load $arg into $GDB (timed out)."
 448             return -1
 449         }
 450         eof {
 451             # This is an attempt to detect a core dump, but seems not to
 452             # work.  Perhaps we need to match .* followed by eof, in which
 453             # gdb_expect does not seem to have a way to do that.
 454             perror "couldn't load $arg into $GDB (end of file)."
 455             return -1
 456         }
 457     }
 458 }
 459
 460 #
 461 # connect to the target and download a file, if necessary.
 462 # return a -1 if anything goes wrong.
 463 #
 464 proc mi_gdb_target_load { } {
 465     global verbose
 466     global loadpath
 467     global loadfile
 468     global GDB
 469     global mi_gdb_prompt
 470
 471     if [target_info exists gdb_load_timeout] {
 472         set loadtimeout [target_info gdb_load_timeout]
 473     } else {
 474         set loadtimeout 1600
 475     }
 476
 477     if { [info procs gdbserver_gdb_load] != "" } {
 478         mi_gdb_test "kill" ".*" ""
 479         if { [catch gdbserver_gdb_load res] == 1 } {
 480             perror $res
 481             return -1
 482         }
 483         set protocol [lindex $res 0]
 484         set gdbport [lindex $res 1]
 485
 486         if { [mi_gdb_target_cmd $protocol $gdbport] != 0 } {
 487             return -1
 488         }
 489     } elseif { [info procs send_target_sid] != "" } {
 490         # For SID, things get complex
 491         send_gdb "kill\n"
 492         gdb_expect 10 {
 493             -re ".*$mi_gdb_prompt$"
 494         }
 495         send_target_sid
 496         gdb_expect $loadtimeout {
 497             -re "\\^done.*$mi_gdb_prompt$" {
 498             }
 499             timeout {
 500                 perror "Unable to connect to SID target (timeout)"
 501                 return -1
 502             }
 503         }
 504         send_gdb "48-target-download\n"
 505         gdb_expect $loadtimeout {
 506             -re "48\\^done.*$mi_gdb_prompt$" {
 507             }
 508             timeout {
 509                 perror "Unable to download to SID target (timeout)"
 510                 return -1
 511             }
 512         }
 513     } elseif { [target_info protocol] == "sim" } {
 514         # For the simulator, just connect to it directly.
 515         send_gdb "47-target-select sim\n"
 516         gdb_expect $loadtimeout {
 517             -re "47\\^connected.*$mi_gdb_prompt$" {
 518             }
 519             timeout {
 520                 perror "Unable to select sim target (timeout)"
 521                 return -1
 522             }
 523         }
 524         send_gdb "48-target-download\n"
 525         gdb_expect $loadtimeout {
 526             -re "48\\^done.*$mi_gdb_prompt$" {
 527             }
 528             timeout {
 529                 perror "Unable to download to sim target (timeout)"
 530                 return -1
 531             }
 532         }
 533     } elseif { [target_info gdb_protocol] == "remote" } {
 534         # remote targets
 535         if { [mi_gdb_target_cmd "remote" [target_info netport]] != 0 } {
 536             perror "Unable to connect to remote target"
 537             return -1
 538         }
 539         send_gdb "48-target-download\n"
 540         gdb_expect $loadtimeout {
 541             -re "48\\^done.*$mi_gdb_prompt$" {
 542             }
 543             timeout {
 544                 perror "Unable to download to remote target (timeout)"
 545                 return -1
 546             }
 547         }
 548     }
 549     return 0
 550 }
 551
 552 #
 553 # load a file into the debugger.
 554 # return a -1 if anything goes wrong.
 555 #
 556 proc mi_gdb_load { arg } {
 557     if { $arg != "" } {
 558         return [mi_gdb_file_cmd $arg]
 559     }
 560     return 0
 561 }
 562
 563 # mi_gdb_test COMMAND PATTERN MESSAGE [IPATTERN] -- send a command to gdb;
 564 #   test the result.
 565 #
 566 # COMMAND is the command to execute, send to GDB with send_gdb.  If
 567 #   this is the null string no command is sent.
 568 # PATTERN is the pattern to match for a PASS, and must NOT include
 569 #   the \r\n sequence immediately before the gdb prompt.
 570 # MESSAGE is the message to be printed.  (If this is the empty string,
 571 #   then sometimes we don't call pass or fail at all; I don't
 572 #   understand this at all.)
 573 # IPATTERN is the pattern to match for the inferior's output.  This parameter
 574 #   is optional.  If present, it will produce a PASS if the match is
 575 #   successful, and a FAIL if unsuccessful.
 576 #
 577 # Returns:
 578 #    1 if the test failed,
 579 #    0 if the test passes,
 580 #   -1 if there was an internal error.
 581 #
 582 proc mi_gdb_test { args } {
 583     global verbose
 584     global mi_gdb_prompt
 585     global GDB expect_out
 586     global inferior_exited_re async
 587     upvar timeout timeout
 588
 589     set command [lindex $args 0]
 590     set pattern [lindex $args 1]
 591     set message [lindex $args 2]
 592
 593     if [llength $args]==4 {
 594         set ipattern [lindex $args 3]
 595     }
 596
 597     if [llength $args]==5 {
 598         set question_string [lindex $args 3]
 599         set response_string [lindex $args 4]
 600     } else {
 601         set question_string "^FOOBAR$"
 602     }
 603
 604     if $verbose>2 then {
 605         send_user "Sending \"$command\" to gdb\n"
 606         send_user "Looking to match \"$pattern\"\n"
 607         send_user "Message is \"$message\"\n"
 608     }
 609
 610     set result -1
 611     set string "${command}\n"
 612     set string_regex [string_to_regexp $command]
 613
 614     if { $command != "" } {
 615         while { "$string" != "" } {
 616             set foo [string first "\n" "$string"]
 617             set len [string length "$string"]
 618             if { $foo < [expr $len - 1] } {
 619                 set str [string range "$string" 0 $foo]
 620                 if { [send_gdb "$str"] != "" } {
 621                     global suppress_flag
 622
 623                     if { ! $suppress_flag } {
 624                         perror "Couldn't send $command to GDB."
 625                     }
 626                     fail "$message"
 627                     return $result
 628                 }
 629                 gdb_expect 2 {
 630                     -re "\[\r\n\]" { }
 631                     timeout { }
 632                 }
 633                 set string [string range "$string" [expr $foo + 1] end]
 634             } else {
 635                 break
 636             }
 637         }
 638         if { "$string" != "" } {
 639             if { [send_gdb "$string"] != "" } {
 640                 global suppress_flag
 641
 642                 if { ! $suppress_flag } {
 643                     perror "Couldn't send $command to GDB."
 644                 }
 645                 fail "$message"
 646                 return $result
 647             }
 648         }
 649     }
 650
 651     if [info exists timeout] {
 652         set tmt $timeout
 653     } else {
 654         global timeout
 655         if [info exists timeout] {
 656             set tmt $timeout
 657         } else {
 658             set tmt 60
 659         }
 660     }
 661     if {$async} {
 662         # With $prompt_re "" there may come arbitrary asynchronous response
 663         # from the previous command, before or after $string_regex.
 664         set string_regex ".*"
 665     }
 666     verbose -log "Expecting: ^($string_regex\[\r\n\]+)?($pattern\[\r\n\]+$mi_gdb_prompt\[ \]*)"
 667     gdb_expect $tmt {
 668          -re "\\*\\*\\* DOSEXIT code.*" {
 669              if { $message != "" } {
 670                  fail "$message"
 671              }
 672              gdb_suppress_entire_file "GDB died"
 673              return -1
 674          }
 675          -re "Ending remote debugging.*$mi_gdb_prompt\[ \]*$" {
 676             if ![isnative] then {
 677                 warning "Can`t communicate to remote target."
 678             }
 679             gdb_exit
 680             gdb_start
 681             set result -1
 682         }
 683          -re "^($string_regex\[\r\n\]+)?($pattern\[\r\n\]+$mi_gdb_prompt\[ \]*)" {
 684             # At this point, $expect_out(1,string) is the MI input command.
 685             # and $expect_out(2,string) is the MI output command.
 686             # If $expect_out(1,string) is "", then there was no MI input command here.
 687
 688             # NOTE, there is no trailing anchor because with GDB/MI,
 689             # asynchronous responses can happen at any point, causing more
 690             # data to be available.  Normally an anchor is used to make
 691             # sure the end of the output is matched, however, $mi_gdb_prompt
 692             # is just as good of an anchor since mi_gdb_test is meant to
 693             # match a single mi output command.  If a second GDB/MI output
 694             # response is sent, it will be in the buffer for the next
 695             # time mi_gdb_test is called.
 696             if ![string match "" $message] then {
 697                 pass "$message"
 698             }
 699             set result 0
 700         }
 701          -re "(${question_string})$" {
 702             send_gdb "$response_string\n"
 703             exp_continue
 704         }
 705          -re "Undefined.* command:.*$mi_gdb_prompt\[ \]*$" {
 706             perror "Undefined command \"$command\"."
 707              fail "$message"
 708             set result 1
 709         }
 710          -re "Ambiguous command.*$mi_gdb_prompt\[ \]*$" {
 711             perror "\"$command\" is not a unique command name."
 712              fail "$message"
 713             set result 1
 714         }
 715          -re "$inferior_exited_re with code \[0-9\]+.*$mi_gdb_prompt\[ \]*$" {
 716             if ![string match "" $message] then {
 717                 set errmsg "$message (the program exited)"
 718             } else {
 719                 set errmsg "$command (the program exited)"
 720             }
 721             fail "$errmsg"
 722             return -1
 723         }
 724          -re "The program is not being run.*$mi_gdb_prompt\[ \]*$" {
 725             if ![string match "" $message] then {
 726                 set errmsg "$message (the program is no longer running)"
 727             } else {
 728                 set errmsg "$command (the program is no longer running)"
 729             }
 730             fail "$errmsg"
 731             return -1
 732         }
 733          -re ".*$mi_gdb_prompt\[ \]*$" {
 734             if ![string match "" $message] then {
 735                 fail "$message"
 736             }
 737             set result 1
 738         }
 739          "<return>" {
 740             send_gdb "\n"
 741             perror "Window too small."
 742              fail "$message"
 743         }
 744          -re "\\(y or n\\) " {
 745             send_gdb "n\n"
 746             perror "Got interactive prompt."
 747              fail "$message"
 748         }
 749          eof {
 750              perror "Process no longer exists"
 751              if { $message != "" } {
 752                  fail "$message"
 753              }
 754              return -1
 755         }
 756          full_buffer {
 757             perror "internal buffer is full."
 758              fail "$message"
 759         }
 760         timeout {
 761             if ![string match "" $message] then {
 762                 fail "$message (timeout)"
 763             }
 764             set result 1
 765         }
 766     }
 767
 768     # If the GDB output matched, compare the inferior output.
 769     if { $result == 0 } {
 770         if [ info exists ipattern ] {
 771             if { ![target_info exists gdb,noinferiorio] } {
 772                 global gdb_spawn_id inferior_spawn_id
 773
 774                 set sid "$inferior_spawn_id $gdb_spawn_id"
 775                 gdb_expect {
 776                     -i "$sid" -re "$ipattern" {
 777                         pass "$message inferior output"
 778                     }
 779                     timeout {
 780                         fail "$message inferior output (timeout)"
 781                         set result 1
 782                     }
 783                 }
 784             } else {
 785                 unsupported "$message inferior output"
 786             }
 787         }
 788     }
 789
 790     return $result
 791 }
 792
 793 # Collect output sent to the console output stream until UNTIL is
 794 # seen.  UNTIL is a regular expression.  MESSAGE is the message to be
 795 # printed in case of timeout.
 796
 797 proc mi_gdb_expect_cli_output {until message} {
 798
 799     set output ""
 800     gdb_expect {
 801         -re "~\"(\[^\r\n\]+)\"\r\n" {
 802             append output $expect_out(1,string)
 803             exp_continue
 804         }
 805         -notransfer -re "$until" {
 806             # Done
 807         }
 808         timeout {
 809             fail "$message (timeout)"
 810             return ""
 811         }
 812     }
 813
 814     return $output
 815 }
 816
 817 #
 818 # MI run command.  (A modified version of gdb_run_cmd)
 819 #
 820
 821 # In patterns, the newline sequence ``\r\n'' is matched explicitly as
 822 # ``.*$'' could swallow up output that we attempt to match elsewhere.
 823
 824 # Send the command to run the test program.
 825 #
 826 # If USE_MI_COMMAND is true, the "-exec-run" command is used.
 827 # Otherwise, the "run" (CLI) command is used.  If the global USE_GDB_STUB is
 828 # true, -exec-continue and continue are used instead of their run counterparts.
 829 #
 830 # ARGS is passed as argument to the command used to run the test program.
 831 # Beware that arguments to "-exec-run" do not have the same semantics as
 832 # arguments to the "run" command, so USE_MI_COMMAND influences the meaning
 833 # of ARGS.  If USE_MI_COMMAND is true, they are arguments to -exec-run.
 834 # If USE_MI_COMMAND is false, they are effectively arguments passed
 835 # to the test program.  If the global USE_GDB_STUB is true, ARGS is not used.
 836 proc mi_run_cmd_full {use_mi_command args} {
 837     global suppress_flag
 838     if { $suppress_flag } {
 839         return -1
 840     }
 841     global mi_gdb_prompt use_gdb_stub
 842     global thread_selected_re
 843     global library_loaded_re
 844
 845     if {$use_mi_command} {
 846         set run_prefix "220-exec-"
 847         set run_match "220"
 848     } else {
 849         set run_prefix ""
 850         set run_match ""
 851     }
 852
 853     foreach command [gdb_init_commands] {
 854         send_gdb "$command\n"
 855         gdb_expect 30 {
 856             -re "$mi_gdb_prompt$" { }
 857             default {
 858                 perror "gdb_init_command for target failed"
 859                 return -1
 860             }
 861         }
 862     }
 863
 864     if { [mi_gdb_target_load] < 0 } {
 865         return -1
 866     }
 867
 868     if $use_gdb_stub {
 869         if [target_info exists gdb,do_reload_on_run] {
 870             send_gdb "${run_prefix}continue\n"
 871             gdb_expect 60 {
 872                 -re "${run_match}\\^running\[\r\n\]+\\*running,thread-id=\"\[^\"\]+\"\r\n$mi_gdb_prompt" {}
 873                 -re "${run_match}\\^error.*$mi_gdb_prompt" {return -1}
 874                 default {}
 875             }
 876             return 0
 877         }
 878
 879         if [target_info exists gdb,start_symbol] {
 880             set start [target_info gdb,start_symbol]
 881         } else {
 882             set start "start"
 883         }
 884
 885         # HACK: Should either use 000-jump or fix the target code
 886         # to better handle RUN.
 887         send_gdb  "jump *$start\n"
 888         warning "Using CLI jump command, expect run-to-main FAIL"
 889         return 0
 890     }
 891
 892     send_gdb "${run_prefix}run $args\n"
 893     gdb_expect {
 894         -re "${run_match}\\^running\r\n(\\*running,thread-id=\"\[^\"\]+\"\r\n|=thread-created,id=\"1\",group-id=\"\[0-9\]+\"\r\n)*(${library_loaded_re})*(${thread_selected_re})?${mi_gdb_prompt}" {
 895         }
 896         -re "\\^error,msg=\"The target does not support running in non-stop mode.\"" {
 897             unsupported "Non-stop mode not supported"
 898             return -1
 899         }
 900         timeout {
 901             perror "Unable to start target"
 902             return -1
 903         }
 904     }
 905     # NOTE: Shortly after this there will be a ``000*stopped,...(gdb)''
 906
 907     return 0
 908 }
 909
 910 # A wrapper for mi_run_cmd_full which uses -exec-run and
 911 # -exec-continue, as appropriate.  ARGS are passed verbatim to
 912 # mi_run_cmd_full.
 913 proc mi_run_cmd {args} {
 914     return [eval mi_run_cmd_full 1 $args]
 915 }
 916
 917 # A wrapper for mi_run_cmd_full which uses the CLI commands 'run' and
 918 # 'continue', as appropriate.  ARGS are passed verbatim to
 919 # mi_run_cmd_full.
 920 proc mi_run_with_cli {args} {
 921     return [eval mi_run_cmd_full 0 $args]
 922 }
 923
 924 #
 925 # Just like run-to-main but works with the MI interface
 926 #
 927
 928 proc mi_run_to_main { } {
 929     global suppress_flag
 930     if { $suppress_flag } {
 931         return -1
 932     }
 933
 934     global srcdir
 935     global subdir
 936     global binfile
 937     global srcfile
 938
 939     mi_delete_breakpoints
 940     mi_gdb_reinitialize_dir $srcdir/$subdir
 941     mi_gdb_load ${binfile}
 942
 943     mi_runto main
 944 }
 945
 946
 947 # Just like gdb's "runto" proc, it will run the target to a given
 948 # function.  The big difference here between mi_runto and mi_execute_to
 949 # is that mi_execute_to must have the inferior running already.  This
 950 # proc will (like gdb's runto) (re)start the inferior, too.
 951 #
 952 # FUNC is the linespec of the place to stop (it inserts a breakpoint here).
 953 # It returns:
 954 #   -1  if test suppressed, failed, timedout
 955 #    0  if test passed
 956
 957 proc mi_runto_helper {func run_or_continue} {
 958   global suppress_flag
 959   if { $suppress_flag } {
 960     return -1
 961   }
 962
 963   global mi_gdb_prompt expect_out
 964   global hex decimal fullname_syntax
 965
 966   set test "mi runto $func"
 967   set bp [mi_make_breakpoint -type breakpoint -disp del \
 968               -func $func\(\\\(.*\\\)\)?]
 969   mi_gdb_test "200-break-insert -t $func" "200\\^done,$bp" \
 970       "breakpoint at $func"
 971
 972   if {$run_or_continue == "run"} {
 973       if { [mi_run_cmd] < 0 } {
 974           return -1
 975       }
 976   } else {
 977       mi_send_resuming_command "exec-continue" "$test"
 978   }
 979
 980   mi_expect_stop "breakpoint-hit" $func ".*" ".*" "\[0-9\]+" { "" "disp=\"del\"" } $test
 981 }
 982
 983 proc mi_runto {func} {
 984     return [mi_runto_helper $func "run"]
 985 }
 986
 987 # Next to the next statement
 988 # For return values, see mi_execute_to_helper
 989
 990 proc mi_next { test } {
 991   return [mi_next_to {.*} {.*} {.*} {.*} $test]
 992 }
 993
 994
 995 # Step to the next statement
 996 # For return values, see mi_execute_to_helper
 997
 998 proc mi_step { test } {
 999   return [mi_step_to {.*} {.*} {.*} {.*} $test]
1000 }
1001
1002 set async "unknown"
1003
1004 proc mi_detect_async {} {
1005     global async
1006     global mi_gdb_prompt
1007
1008     send_gdb "show mi-async\n"
1009
1010     gdb_expect {
1011         -re "asynchronous mode is on...*$mi_gdb_prompt$" {
1012             set async 1
1013         }
1014         -re ".*$mi_gdb_prompt$" {
1015             set async 0
1016         }
1017         timeout {
1018             set async 0
1019         }
1020     }
1021     return $async
1022 }
1023
1024 # Wait for MI *stopped notification to appear.
1025 # The REASON, FUNC, ARGS, FILE and LINE are regular expressions
1026 # to match against whatever is output in *stopped.  FILE may also match
1027 # filename of a file without debug info.  ARGS should not include [] the
1028 # list of argument is enclosed in, and other regular expressions should
1029 # not include quotes.
1030 # If EXTRA is a list of one element, it's the regular expression
1031 # for output expected right after *stopped, and before GDB prompt.
1032 # If EXTRA is a list of two elements, the first element is for
1033 # output right after *stopped, and the second element is output
1034 # right after reason field.  The regex after reason should not include
1035 # the comma separating it from the following fields.
1036 #
1037 # When we fail to match output at all, -1 is returned.  If FILE does
1038 # match and the target system has no debug info for FILE return 0.
1039 # Otherwise, the line at which we stop is returned.  This is useful when
1040 # exact line is not possible to specify for some reason -- one can pass
1041 # the .* or "\[0-9\]*" regexps for line, and then check the line
1042 # programmatically.
1043 #
1044 # Do not pass .* for any argument if you are expecting more than one stop.
1045 proc mi_expect_stop { reason func args file line extra test } {
1046
1047     global mi_gdb_prompt
1048     global hex
1049     global decimal
1050     global fullname_syntax
1051     global async
1052     global thread_selected_re
1053     global breakpoint_re
1054
1055     set any "\[^\n\]*"
1056
1057     set after_stopped ""
1058     set after_reason ""
1059     if { [llength $extra] == 2 } {
1060         set after_stopped [lindex $extra 0]
1061         set after_reason [lindex $extra 1]
1062         set after_reason "${after_reason},"
1063     } elseif { [llength $extra] == 1 } {
1064         set after_stopped [lindex $extra 0]
1065     }
1066
1067     if {$async} {
1068         set prompt_re ""
1069     } else {
1070         set prompt_re "$mi_gdb_prompt$"
1071     }
1072
1073     if { $reason == "really-no-reason" } {
1074         gdb_expect {
1075             -re "\\*stopped\r\n$prompt_re" {
1076                 pass "$test"
1077             }
1078             timeout {
1079                 fail "$test (timeout)"
1080             }
1081         }
1082         return
1083     }
1084
1085     if { $reason == "exited-normally" } {
1086
1087         gdb_expect {
1088             -re "\\*stopped,reason=\"exited-normally\"\r\n$prompt_re" {
1089                 pass "$test"
1090             }
1091             -re ".*$mi_gdb_prompt$" {fail "continue to end (2)"}
1092             timeout {
1093                 fail "$test (timeout)"
1094             }
1095         }
1096         return
1097     }
1098     if { $reason == "exited" } {
1099         gdb_expect {
1100             -re "\\*stopped,reason=\"exited\",exit-code=\"\[0-7\]+\"\r\n$prompt_re" {
1101                 pass "$test"
1102             }
1103             -re ".*$mi_gdb_prompt$" {
1104                 fail "$test (inferior not stopped)"
1105             }
1106             timeout {
1107                 fail "$test (timeout)"
1108             }
1109         }
1110         return
1111     }
1112
1113     if { $reason == "solib-event" } {
1114         set pattern "\\*stopped,reason=\"solib-event\",thread-id=\"$decimal\",stopped-threads=$any\r\n($thread_selected_re|$breakpoint_re)*$prompt_re"
1115         verbose -log "mi_expect_stop: expecting: $pattern"
1116         gdb_expect {
1117             -re "$pattern" {
1118                 pass "$test"
1119             }
1120             timeout {
1121                 fail "$test (timeout)"
1122             }
1123         }
1124         return
1125     }
1126
1127     set args "\\\[$args\\\]"
1128
1129     set bn ""
1130     if { $reason == "breakpoint-hit" } {
1131         set bn {bkptno="[0-9]+",}
1132     } elseif { $reason == "solib-event" } {
1133         set bn ".*"
1134     }
1135
1136     set r ""
1137     if { $reason != "" } {
1138         set r "reason=\"$reason\","
1139     }
1140
1141
1142     set a $after_reason
1143
1144     verbose -log "mi_expect_stop: expecting: \\*stopped,${r}${a}${bn}frame=\{addr=\"$hex\",func=\"$func\",args=$args,(?:file=\"$any$file\",fullname=\"${fullname_syntax}$file\",line=\"$line\"|from=\"$file\")\}$after_stopped,thread-id=\"$decimal\",stopped-threads=$any\r\n($thread_selected_re|$breakpoint_re)*$prompt_re"
1145     gdb_expect {
1146         -re "\\*stopped,${r}${a}${bn}frame=\{addr=\"$hex\",func=\"$func\",args=$args,(?:file=\"$any$file\",fullname=\"${fullname_syntax}$file\",line=\"($line)\"|from=\"$file\")\}$after_stopped,thread-id=\"$decimal\",stopped-threads=$any\r\n($thread_selected_re|$breakpoint_re)*$prompt_re" {
1147             pass "$test"
1148             if {[array names expect_out "2,string"] != ""} {
1149                 return $expect_out(2,string)
1150             }
1151             # No debug info available but $file does match.
1152             return 0
1153         }
1154         -re "\\*stopped,${r}${a}${bn}frame=\{addr=\"$hex\",func=\"$any\",args=\[\\\[\{\]$any\[\\\]\}\],file=\"$any\",fullname=\"${fullname_syntax}$any\",line=\"\[0-9\]*\"\}$after_stopped,thread-id=\"$decimal\",stopped-threads=$any\r\n($thread_selected_re|$breakpoint_re)*$prompt_re" {
1155             verbose -log "got $expect_out(buffer)"
1156             fail "$test (stopped at wrong place)"
1157             return -1
1158         }
1159         -re ".*\r\n$mi_gdb_prompt$" {
1160             verbose -log "got $expect_out(buffer)"
1161             fail "$test (unknown output after running)"
1162             return -1
1163         }
1164         timeout {
1165             fail "$test (timeout)"
1166             return -1
1167         }
1168     }
1169 }
1170
1171 # Wait for MI *stopped notification related to an interrupt request to
1172 # appear.
1173 proc mi_expect_interrupt { test } {
1174     global mi_gdb_prompt
1175     global decimal
1176     global async
1177
1178     if {$async} {
1179         set prompt_re ""
1180     } else {
1181         set prompt_re "$mi_gdb_prompt$"
1182     }
1183
1184     set r_nonstop "reason=\"signal-received\",signal-name=\"0\",signal-meaning=\"Signal 0\""
1185     set r_allstop "reason=\"signal-received\",signal-name=\"SIGINT\",signal-meaning=\"Interrupt\""
1186     set r "(${r_nonstop}|${r_allstop})"
1187     set any "\[^\n\]*"
1188
1189     # A signal can land anywhere, just ignore the location
1190     verbose -log "mi_expect_interrupt: expecting: \\*stopped,${r}$any\r\n$prompt_re"
1191     gdb_expect {
1192         -re "\\*stopped,${r}$any\r\n$prompt_re" {
1193             pass "$test"
1194             return 0
1195         }
1196         -re ".*\r\n$mi_gdb_prompt$" {
1197             verbose -log "got $expect_out(buffer)"
1198             fail "$test (unknown output after running)"
1199             return -1
1200         }
1201         timeout {
1202             fail "$test (timeout)"
1203             return -1
1204         }
1205     }
1206 }
1207
1208 # cmd should not include the number or newline (i.e. "exec-step 3", not
1209 # "220-exec-step 3\n"
1210
1211 # Can not match -re ".*\r\n${mi_gdb_prompt}", because of false positives
1212 # after the first prompt is printed.
1213
1214 proc mi_execute_to { cmd reason func args file line extra test } {
1215     global suppress_flag
1216     if { $suppress_flag } {
1217         return -1
1218     }
1219
1220     mi_send_resuming_command "$cmd" "$test"
1221     set r [mi_expect_stop $reason $func $args $file $line $extra $test]
1222     return $r
1223 }
1224
1225 proc mi_next_to { func args file line test } {
1226     mi_execute_to "exec-next" "end-stepping-range" "$func" "$args" \
1227         "$file" "$line" "" "$test"
1228 }
1229
1230 proc mi_step_to { func args file line test } {
1231     mi_execute_to "exec-step" "end-stepping-range" "$func" "$args" \
1232         "$file" "$line" "" "$test"
1233 }
1234
1235 proc mi_finish_to { func args file line result ret test } {
1236     mi_execute_to "exec-finish" "function-finished" "$func" "$args" \
1237         "$file" "$line" \
1238         ",gdb-result-var=\"$result\",return-value=\"$ret\"" \
1239         "$test"
1240 }
1241
1242 proc mi_continue_to {func} {
1243     mi_runto_helper $func "continue"
1244 }
1245
1246 proc mi0_execute_to { cmd reason func args file line extra test } {
1247     mi_execute_to_helper "$cmd" "$reason" "$func" "\{$args\}" \
1248         "$file" "$line" "$extra" "$test"
1249 }
1250
1251 proc mi0_next_to { func args file line test } {
1252     mi0_execute_to "exec-next" "end-stepping-range" "$func" "$args" \
1253         "$file" "$line" "" "$test"
1254 }
1255
1256 proc mi0_step_to { func args file line test } {
1257     mi0_execute_to "exec-step" "end-stepping-range" "$func" "$args" \
1258         "$file" "$line" "" "$test"
1259 }
1260
1261 proc mi0_finish_to { func args file line result ret test } {
1262     mi0_execute_to "exec-finish" "function-finished" "$func" "$args" \
1263         "$file" "$line" \
1264         ",gdb-result-var=\"$result\",return-value=\"$ret\"" \
1265         "$test"
1266 }
1267
1268 proc mi0_continue_to { bkptno func args file line test } {
1269     mi0_execute_to "exec-continue" "breakpoint-hit\",bkptno=\"$bkptno" \
1270         "$func" "$args" "$file" "$line" "" "$test"
1271 }
1272
1273 # Creates a breakpoint and checks the reported fields are as expected.
1274 # This procedure takes the same options as mi_make_breakpoint and
1275 # returns the breakpoint regexp from that procedure.
1276
1277 proc mi_create_breakpoint {location test args} {
1278     set bp [eval mi_make_breakpoint $args]
1279     mi_gdb_test "222-break-insert $location" "222\\^done,$bp" $test
1280     return $bp
1281 }
1282
1283 # Creates varobj named NAME for EXPRESSION.
1284 # Name cannot be "-".
1285 proc mi_create_varobj { name expression testname } {
1286     mi_gdb_test "-var-create $name * $expression" \
1287         "\\^done,name=\"$name\",numchild=\"\[0-9\]+\",value=\".*\",type=.*,has_more=\"0\"" \
1288         $testname
1289 }
1290
1291 proc mi_create_floating_varobj { name expression testname } {
1292     mi_gdb_test "-var-create $name @ $expression" \
1293         "\\^done,name=\"$name\",numchild=\"\(-1\|\[0-9\]+\)\",value=\".*\",type=.*" \
1294         $testname
1295 }
1296
1297
1298 # Same as mi_create_varobj, but also checks the reported type
1299 # of the varobj.
1300 proc mi_create_varobj_checked { name expression type testname } {
1301     mi_gdb_test "-var-create $name * $expression" \
1302         "\\^done,name=\"$name\",numchild=\"\[0-9\]+\",value=\".*\",type=\"$type\".*" \
1303         $testname
1304 }
1305
1306 # Same as mi_create_floating_varobj, but assumes the test is creating
1307 # a dynamic varobj that has children, so the value must be "{...}".
1308 # The "has_more" attribute is checked.
1309 proc mi_create_dynamic_varobj {name expression has_more testname} {
1310     mi_gdb_test "-var-create $name @ $expression" \
1311         "\\^done,name=\"$name\",numchild=\"0\",value=\"{\\.\\.\\.}\",type=.*,has_more=\"${has_more}\"" \
1312         $testname
1313 }
1314
1315 # Deletes the specified NAME.
1316 proc mi_delete_varobj { name testname } {
1317     mi_gdb_test "-var-delete $name" \
1318         "\\^done,ndeleted=.*" \
1319         $testname
1320 }
1321
1322 # Updates varobj named NAME and checks that all varobjs in EXPECTED
1323 # are reported as updated, and no other varobj is updated.
1324 # Assumes that no varobj is out of scope and that no varobj changes
1325 # types.
1326 proc mi_varobj_update { name expected testname } {
1327     set er "\\^done,changelist=\\\["
1328     set first 1
1329     foreach item $expected {
1330         set v "{name=\"$item\",in_scope=\"true\",type_changed=\"false\",has_more=\".\"}"
1331         if {$first == 1} {
1332             set er "$er$v"
1333             set first 0
1334         } else {
1335             set er "$er,$v"
1336         }
1337     }
1338     set er "$er\\\]"
1339
1340     verbose -log "Expecting: $er" 2
1341     mi_gdb_test "-var-update $name" $er $testname
1342 }
1343
1344 proc mi_varobj_update_with_child_type_change { name child_name new_type new_children testname } {
1345     set v "{name=\"$child_name\",in_scope=\"true\",type_changed=\"true\",new_type=\"$new_type\",new_num_children=\"$new_children\",has_more=\".\"}"
1346     set er "\\^done,changelist=\\\[$v\\\]"
1347     verbose -log "Expecting: $er"
1348     mi_gdb_test "-var-update $name" $er $testname
1349 }
1350
1351 proc mi_varobj_update_with_type_change { name new_type new_children testname } {
1352     mi_varobj_update_with_child_type_change $name $name $new_type $new_children $testname
1353 }
1354
1355 # A helper that turns a key/value list into a regular expression
1356 # matching some MI output.
1357 proc mi_varobj_update_kv_helper {list} {
1358     set first 1
1359     set rx ""
1360     foreach {key value} $list {
1361         if {!$first} {
1362             append rx ,
1363         }
1364         set first 0
1365         if {$key == "new_children"} {
1366             append rx "$key=\\\[$value\\\]"
1367         } else {
1368             append rx "$key=\"$value\""
1369         }
1370     }
1371     return $rx
1372 }
1373
1374 # A helper for mi_varobj_update_dynamic that computes a match
1375 # expression given a child list.
1376 proc mi_varobj_update_dynamic_helper {children} {
1377     set crx ""
1378
1379     set first 1
1380     foreach child $children {
1381         if {!$first} {
1382             append crx ,
1383         }
1384         set first 0
1385         append crx "{"
1386         append crx [mi_varobj_update_kv_helper $child]
1387         append crx "}"
1388     }
1389
1390     return $crx
1391 }
1392
1393 # Update a dynamic varobj named NAME.  CHILDREN is a list of children
1394 # that have been updated; NEW_CHILDREN is a list of children that were
1395 # added to the primary varobj.  Each child is a list of key/value
1396 # pairs that are expected.  SELF is a key/value list holding
1397 # information about the varobj itself.  TESTNAME is the name of the
1398 # test.
1399 proc mi_varobj_update_dynamic {name testname self children new_children} {
1400     if {[llength $new_children]} {
1401         set newrx [mi_varobj_update_dynamic_helper $new_children]
1402         lappend self new_children $newrx
1403     }
1404     set selfrx [mi_varobj_update_kv_helper $self]
1405     set crx [mi_varobj_update_dynamic_helper $children]
1406
1407     set er "\\^done,changelist=\\\[\{name=\"$name\",in_scope=\"true\""
1408     append er ",$selfrx\}"
1409     if {"$crx" != ""} {
1410         append er ",$crx"
1411     }
1412     append er "\\\]"
1413
1414     verbose -log "Expecting: $er"
1415     mi_gdb_test "-var-update $name" $er $testname
1416 }
1417
1418 proc mi_check_varobj_value { name value testname } {
1419
1420     mi_gdb_test "-var-evaluate-expression $name" \
1421         "\\^done,value=\"$value\"" \
1422         $testname
1423 }
1424
1425 # Helper proc which constructs a child regexp for
1426 # mi_list_varobj_children and mi_varobj_update_dynamic.
1427 proc mi_child_regexp {children add_child} {
1428     set children_exp {}
1429
1430     if {$add_child} {
1431         set pre "child="
1432     } else {
1433         set pre ""
1434     }
1435
1436     foreach item $children {
1437
1438         set name [lindex $item 0]
1439         set exp [lindex $item  1]
1440         set numchild [lindex $item 2]
1441         if {[llength $item] == 5} {
1442             set type [lindex $item 3]
1443             set value [lindex $item 4]
1444
1445             lappend children_exp\
1446                 "$pre{name=\"$name\",exp=\"$exp\",numchild=\"$numchild\",value=\"$value\",type=\"$type\"(,thread-id=\"\[0-9\]+\")?}"
1447         } elseif {[llength $item] == 4} {
1448             set type [lindex $item 3]
1449
1450             lappend children_exp\
1451                 "$pre{name=\"$name\",exp=\"$exp\",numchild=\"$numchild\",type=\"$type\"(,thread-id=\"\[0-9\]+\")?}"
1452         } else {
1453             lappend children_exp\
1454                 "$pre{name=\"$name\",exp=\"$exp\",numchild=\"$numchild\"(,thread-id=\"\[0-9\]+\")?}"
1455         }
1456     }
1457     return [join $children_exp ","]
1458 }
1459
1460 # Check the results of the:
1461 #
1462 #   -var-list-children VARNAME
1463 #
1464 # command.  The CHILDREN parement should be a list of lists.
1465 # Each inner list can have either 3 or 4 elements, describing
1466 # fields that gdb is expected to report for child variable object,
1467 # in the following order
1468 #
1469 #   - Name
1470 #   - Expression
1471 #   - Number of children
1472 #   - Type
1473 #
1474 # If inner list has 3 elements, the gdb is expected to output no
1475 # type for a child and no value.
1476 #
1477 # If the inner list has 4 elements, gdb output is expected to
1478 # have no value.
1479 #
1480 proc mi_list_varobj_children { varname children testname } {
1481     mi_list_varobj_children_range $varname "" "" [llength $children] $children \
1482       $testname
1483 }
1484
1485 # Like mi_list_varobj_children, but sets a subrange.  NUMCHILDREN is
1486 # the total number of children.
1487 proc mi_list_varobj_children_range {varname from to numchildren children testname} {
1488     set options ""
1489     if {[llength $varname] == 2} {
1490         set options [lindex $varname 1]
1491         set varname [lindex $varname 0]
1492     }
1493
1494     set children_exp_j [mi_child_regexp $children 1]
1495     if {$numchildren} {
1496         set expected "\\^done,numchild=\".*\",children=\\\[$children_exp_j.*\\\]"
1497     } {
1498         set expected "\\^done,numchild=\"0\""
1499     }
1500
1501     if {"$to" == ""} {
1502         append expected ",has_more=\"0\""
1503     } elseif {$to >= 0 && $numchildren > $to} {
1504         append expected ",has_more=\"1\""
1505     } else {
1506         append expected ",has_more=\"0\""
1507     }
1508
1509     verbose -log "Expecting: $expected"
1510
1511     mi_gdb_test "-var-list-children $options $varname $from $to" \
1512       $expected $testname
1513 }
1514
1515 # Verifies that variable object VARNAME has NUMBER children,
1516 # where each one is named $VARNAME.<index-of-child> and has type TYPE.
1517 proc mi_list_array_varobj_children { varname number type testname } {
1518     mi_list_array_varobj_children_with_index $varname $number 0 $type $testname
1519 }
1520
1521 # Same as mi_list_array_varobj_children, but allowing to pass a start index
1522 # for an array.
1523 proc mi_list_array_varobj_children_with_index { varname number start_index \
1524   type testname } {
1525     set t {}
1526     set index $start_index
1527     for {set i 0} {$i < $number} {incr i} {
1528         lappend t [list $varname.$index $index 0 $type]
1529         incr index
1530     }
1531     mi_list_varobj_children $varname $t $testname
1532 }
1533
1534 # A list of two-element lists.  First element of each list is
1535 # a Tcl statement, and the second element is the line
1536 # number of source C file where the statement originates.
1537 set mi_autotest_data ""
1538 # The name of the source file for autotesting.
1539 set mi_autotest_source ""
1540
1541 proc count_newlines { string } {
1542     return [regexp -all "\n" $string]
1543 }
1544
1545 # Prepares for running inline tests in FILENAME.
1546 # See comments for mi_run_inline_test for detailed
1547 # explanation of the idea and syntax.
1548 proc mi_prepare_inline_tests { filename } {
1549
1550     global srcdir
1551     global subdir
1552     global mi_autotest_source
1553     global mi_autotest_data
1554
1555     set mi_autotest_data {}
1556
1557     set mi_autotest_source $filename
1558
1559     if { ! [regexp "^/" "$filename"] } then {
1560         set filename "$srcdir/$subdir/$filename"
1561     }
1562
1563     set chan [open $filename]
1564     set content [read $chan]
1565     set line_number 1
1566     while {1} {
1567         set start [string first "/*:" $content]
1568         if {$start != -1} {
1569             set end [string first ":*/" $content]
1570             if {$end == -1} {
1571                 error "Unterminated special comment in $filename"
1572             }
1573
1574             set prefix [string range $content 0 $start]
1575             set prefix_newlines [count_newlines $prefix]
1576
1577             set line_number [expr $line_number+$prefix_newlines]
1578             set comment_line $line_number
1579
1580             set comment [string range $content [expr $start+3] [expr $end-1]]
1581
1582             set comment_newlines [count_newlines $comment]
1583             set line_number [expr $line_number+$comment_newlines]
1584
1585             set comment [string trim $comment]
1586             set content [string range $content [expr $end+3] \
1587                              [string length $content]]
1588             lappend mi_autotest_data [list $comment $comment_line]
1589         } else {
1590             break
1591         }
1592     }
1593     close $chan
1594 }
1595
1596 # Helper to mi_run_inline_test below.
1597 # Return the list of all (statement,line_number) lists
1598 # that comprise TESTCASE.  The begin and end markers
1599 # are not included.
1600 proc mi_get_inline_test {testcase} {
1601
1602     global mi_gdb_prompt
1603     global mi_autotest_data
1604     global mi_autotest_source
1605
1606     set result {}
1607
1608     set seen_begin 0
1609     set seen_end 0
1610     foreach l $mi_autotest_data {
1611
1612         set comment [lindex $l 0]
1613
1614         if {$comment == "BEGIN: $testcase"} {
1615             set seen_begin 1
1616         } elseif {$comment == "END: $testcase"} {
1617             set seen_end 1
1618             break
1619         } elseif {$seen_begin==1} {
1620             lappend result $l
1621         }
1622     }
1623
1624     if {$seen_begin == 0} {
1625         error "Autotest $testcase not found"
1626     }
1627
1628     if {$seen_begin == 1 && $seen_end == 0} {
1629         error "Missing end marker for test $testcase"
1630     }
1631
1632     return $result
1633 }
1634
1635 # Sets temporary breakpoint at LOCATION.
1636 proc mi_tbreak {location} {
1637
1638     global mi_gdb_prompt
1639
1640     mi_gdb_test "-break-insert -t $location" \
1641         {\^done,bkpt=.*} \
1642         "run to $location (set breakpoint)"
1643 }
1644
1645 # Send COMMAND that must be a command that resumes
1646 # the inferior (run/continue/next/etc) and consumes
1647 # the "^running" output from it.
1648 proc mi_send_resuming_command_raw {command test} {
1649
1650     global mi_gdb_prompt
1651     global thread_selected_re
1652     global library_loaded_re
1653
1654     send_gdb "$command\n"
1655     gdb_expect {
1656         -re "\\^running\r\n\\*running,thread-id=\"\[^\"\]+\"\r\n($library_loaded_re)*($thread_selected_re)?${mi_gdb_prompt}" {
1657             # Note that lack of 'pass' call here -- this works around limitation
1658             # in DejaGNU xfail mechanism. mi-until.exp has this:
1659             #
1660             #     setup_kfail gdb/2104 "*-*-*"
1661             #     mi_execute_to ...
1662             #
1663             # and mi_execute_to uses mi_send_resuming_command.  If we use 'pass' here,
1664             # it will reset kfail, so when the actual test fails, it will be flagged
1665             # as real failure.
1666             return 0
1667         }
1668         -re "\\^error,msg=\"Displaced stepping is only supported in ARM mode\".*" {
1669             unsupported "$test (Thumb mode)"
1670             return -1
1671         }
1672         -re "\\^error,msg=.*" {
1673             fail "$test (MI error)"
1674             return -1
1675         }
1676         -re ".*${mi_gdb_prompt}" {
1677             fail "$test (failed to resume)"
1678             return -1
1679         }
1680         timeout {
1681             fail "$test"
1682             return -1
1683         }
1684     }
1685 }
1686
1687 proc mi_send_resuming_command {command test} {
1688     mi_send_resuming_command_raw -$command $test
1689 }
1690
1691 # Helper to mi_run_inline_test below.
1692 # Sets a temporary breakpoint at LOCATION and runs
1693 # the program using COMMAND.  When the program is stopped
1694 # returns the line at which it.  Returns -1 if line cannot
1695 # be determined.
1696 # Does not check that the line is the same as requested.
1697 # The caller can check itself if required.
1698 proc mi_continue_to_line {location test} {
1699
1700     mi_tbreak $location
1701     mi_send_resuming_command "exec-continue" "run to $location (exec-continue)"
1702     return [mi_get_stop_line $test]
1703 }
1704
1705 # Wait until gdb prints the current line.
1706 proc mi_get_stop_line {test} {
1707
1708   global mi_gdb_prompt
1709   global async
1710
1711   if {$async} {
1712       set prompt_re ""
1713   } else {
1714       set prompt_re "$mi_gdb_prompt$"
1715   }
1716
1717   gdb_expect {
1718       -re ".*line=\"(\[0-9\]*)\".*\r\n$prompt_re" {
1719           return $expect_out(1,string)
1720       }
1721       -re ".*$mi_gdb_prompt" {
1722           fail "wait for stop ($test)"
1723       }
1724       timeout {
1725           fail "wait for stop ($test)"
1726       }
1727   }
1728 }
1729
1730 # Run a MI test embedded in comments in a C file.
1731 # The C file should contain special comments in the following
1732 # three forms:
1733 #
1734 #    /*: BEGIN: testname :*/
1735 #    /*:  <Tcl statements> :*/
1736 #    /*: END: testname :*/
1737 #
1738 # This procedure find the begin and end marker for the requested
1739 # test. Then, a temporary breakpoint is set at the begin
1740 # marker and the program is run (from start).
1741 #
1742 # After that, for each special comment between the begin and end
1743 # marker, the Tcl statements are executed.  It is assumed that
1744 # for each comment, the immediately preceding line is executable
1745 # C statement.  Then, gdb will be single-stepped until that
1746 # preceding C statement is executed, and after that the
1747 # Tcl statements in the comment will be executed.
1748 #
1749 # For example:
1750 #
1751 #     /*: BEGIN: assignment-test :*/
1752 #     v = 10;
1753 #     /*: <Tcl code to check that 'v' is indeed 10 :*/
1754 #     /*: END: assignment-test :*/
1755 #
1756 # The mi_prepare_inline_tests function should be called before
1757 # calling this function.  A given C file can contain several
1758 # inline tests.  The names of the tests must be unique within one
1759 # C file.
1760 #
1761 proc mi_run_inline_test { testcase } {
1762
1763     global mi_gdb_prompt
1764     global hex
1765     global decimal
1766     global fullname_syntax
1767     global mi_autotest_source
1768
1769     set commands [mi_get_inline_test $testcase]
1770
1771     set first 1
1772     set line_now 1
1773
1774     foreach c $commands {
1775         set statements [lindex $c 0]
1776         set line [lindex $c 1]
1777         set line [expr $line-1]
1778
1779         # We want gdb to be stopped at the expression immediately
1780         # before the comment.  If this is the first comment, the
1781         # program is either not started yet or is in some random place,
1782         # so we run it.  For further comments, we might be already
1783         # standing at the right line. If not continue till the
1784         # right line.
1785
1786         if {$first==1} {
1787             # Start the program afresh.
1788             mi_tbreak "$mi_autotest_source:$line"
1789             mi_run_cmd
1790             set line_now [mi_get_stop_line "$testcase: step to $line"]
1791             set first 0
1792         } elseif {$line_now!=$line} {
1793             set line_now [mi_continue_to_line "$mi_autotest_source:$line" "continue to $line"]
1794         }
1795
1796         if {$line_now!=$line} {
1797             fail "$testcase: go to line $line"
1798         }
1799
1800         # We're not at the statement right above the comment.
1801         # Execute that statement so that the comment can test
1802         # the state after the statement is executed.
1803
1804         # Single-step past the line.
1805         if { [mi_send_resuming_command "exec-next" "$testcase: step over $line"] != 0 } {
1806             return -1
1807         }
1808         set line_now [mi_get_stop_line "$testcase: step over $line"]
1809
1810         # We probably want to use 'uplevel' so that statements
1811         # have direct access to global variables that the
1812         # main 'exp' file has set up.  But it's not yet clear,
1813         # will need more experience to be sure.
1814         eval $statements
1815     }
1816 }
1817
1818 proc get_mi_thread_list {name} {
1819   global expect_out
1820
1821   # MI will return a list of thread ids:
1822   #
1823   # -thread-list-ids
1824   # ^done,thread-ids=[thread-id="1",thread-id="2",...],number-of-threads="N"
1825   # (gdb)
1826   mi_gdb_test "-thread-list-ids" \
1827     {.*\^done,thread-ids={(thread-id="[0-9]+"(,)?)+},current-thread-id="[0-9]+",number-of-threads="[0-9]+"} \
1828     "-thread_list_ids ($name)"
1829
1830   set output {}
1831   if {[info exists expect_out(buffer)]} {
1832     set output $expect_out(buffer)
1833   }
1834
1835   set thread_list {}
1836   if {![regexp {thread-ids=\{(thread-id="[0-9]+"(,)?)*\}} $output threads]} {
1837     fail "finding threads in MI output ($name)"
1838   } else {
1839     pass "finding threads in MI output ($name)"
1840
1841     # Make list of console threads
1842     set start [expr {[string first \{ $threads] + 1}]
1843     set end   [expr {[string first \} $threads] - 1}]
1844     set threads [string range $threads $start $end]
1845     foreach thread [split $threads ,] {
1846       if {[scan $thread {thread-id="%d"} num]} {
1847         lappend thread_list $num
1848       }
1849     }
1850   }
1851
1852   return $thread_list
1853 }
1854
1855 # Check that MI and the console know of the same threads.
1856 # Appends NAME to all test names.
1857 proc check_mi_and_console_threads {name} {
1858   global expect_out
1859
1860   mi_gdb_test "-thread-list-ids" \
1861     {.*\^done,thread-ids={(thread-id="[0-9]+"(,)*)+},current-thread-id="[0-9]+",number-of-threads="[0-9]+"} \
1862     "-thread-list-ids ($name)"
1863   set mi_output {}
1864   if {[info exists expect_out(buffer)]} {
1865     set mi_output $expect_out(buffer)
1866   }
1867
1868   # GDB will return a list of thread ids and some more info:
1869   #
1870   # (gdb)
1871   # -interpreter-exec console "info threads"
1872   # ~"  4 Thread 2051 (LWP 7734)  0x401166b1 in __libc_nanosleep () at __libc_nanosleep:-1"
1873   # ~"  3 Thread 1026 (LWP 7733)   () at __libc_nanosleep:-1"
1874   # ~"  2 Thread 2049 (LWP 7732)  0x401411f8 in __poll (fds=0x804bb24, nfds=1, timeout=2000) at ../sysdeps/unix/sysv/linux/poll.c:63"
1875   # ~"* 1 Thread 1024 (LWP 7731)  main (argc=1, argv=0xbfffdd94) at ../../../src/gdb/testsuite/gdb.mi/pthreads.c:160"
1876   # FIXME: kseitz/2002-09-05: Don't use the hack-cli method.
1877   mi_gdb_test "info threads" \
1878     {.*(~".*"[\r\n]*)+.*} \
1879     "info threads ($name)"
1880   set console_output {}
1881   if {[info exists expect_out(buffer)]} {
1882     set console_output $expect_out(buffer)
1883   }
1884
1885   # Make a list of all known threads to console (gdb's thread IDs)
1886   set console_thread_list {}
1887   foreach line [split $console_output \n] {
1888     if {[string index $line 0] == "~"} {
1889       # This is a line from the console; trim off "~", " ", "*", and "\""
1890       set line [string trim $line ~\ \"\*]
1891       if {[scan $line "%d" id] == 1} {
1892         lappend console_thread_list $id
1893       }
1894     }
1895   }
1896
1897   # Now find the result string from MI
1898   set mi_result ""
1899   foreach line [split $mi_output \n] {
1900     if {[string range $line 0 4] == "^done"} {
1901       set mi_result $line
1902     }
1903   }
1904   if {$mi_result == ""} {
1905     fail "finding MI result string ($name)"
1906   } else {
1907     pass "finding MI result string ($name)"
1908   }
1909
1910   # Finally, extract the thread ids and compare them to the console
1911   set num_mi_threads_str ""
1912   if {![regexp {number-of-threads="[0-9]+"} $mi_result num_mi_threads_str]} {
1913     fail "finding number of threads in MI output ($name)"
1914   } else {
1915     pass "finding number of threads in MI output ($name)"
1916
1917     # Extract the number of threads from the MI result
1918     if {![scan $num_mi_threads_str {number-of-threads="%d"} num_mi_threads]} {
1919       fail "got number of threads from MI ($name)"
1920     } else {
1921       pass "got number of threads from MI ($name)"
1922
1923       # Check if MI and console have same number of threads
1924       if {$num_mi_threads != [llength $console_thread_list]} {
1925         fail "console and MI have same number of threads ($name)"
1926       } else {
1927         pass "console and MI have same number of threads ($name)"
1928
1929         # Get MI thread list
1930         set mi_thread_list [get_mi_thread_list $name]
1931
1932         # Check if MI and console have the same threads
1933         set fails 0
1934         foreach ct [lsort $console_thread_list] mt [lsort $mi_thread_list] {
1935           if {$ct != $mt} {
1936             incr fails
1937           }
1938         }
1939         if {$fails > 0} {
1940           fail "MI and console have same threads ($name)"
1941
1942           # Send a list of failures to the log
1943           send_log "Console has thread ids: $console_thread_list\n"
1944           send_log "MI has thread ids: $mi_thread_list\n"
1945         } else {
1946           pass "MI and console have same threads ($name)"
1947         }
1948       }
1949     }
1950   }
1951 }
1952
1953 # Download shared libraries to the target.
1954 proc mi_load_shlibs { args } {
1955     if {![is_remote target]} {
1956         return
1957     }
1958
1959     foreach file $args {
1960         gdb_download [shlib_target_file $file]
1961     }
1962
1963     # Even if the target supplies full paths for shared libraries,
1964     # they may not be paths for this system.
1965     mi_gdb_test "set solib-search-path [file dirname [lindex $args 0]]" "\^done" ""
1966 }
1967
1968 proc mi_check_thread_states { states test } {
1969     global expect_out
1970     set pattern ".*\\^done,threads=\\\["
1971     foreach s $states {
1972         set pattern "${pattern}(.*)state=\"$s\""
1973     }
1974     set pattern "${pattern}(,core=\"\[0-9\]*\")?\\\}\\\].*"
1975
1976     verbose -log "expecting: $pattern"
1977     mi_gdb_test "-thread-info" $pattern $test
1978 }
1979
1980 # Return a list of MI features supported by this gdb.
1981 proc mi_get_features {} {
1982     global expect_out mi_gdb_prompt
1983
1984     send_gdb "-list-features\n"
1985
1986     gdb_expect {
1987         -re "\\^done,features=\\\[(.*)\\\]\r\n$mi_gdb_prompt$" {
1988             regsub -all -- \" $expect_out(1,string) "" features
1989             return [split $features ,]
1990         }
1991         -re ".*\r\n$mi_gdb_prompt$" {
1992             verbose -log "got $expect_out(buffer)"
1993             return ""
1994         }
1995         timeout {
1996             verbose -log "timeout in mi_gdb_prompt"
1997             return ""
1998         }
1999     }
2000 }
2001
2002 # Variable Object Trees
2003 #
2004 # Yet another way to check varobjs. Pass mi_walk_varobj_tree a "list" of
2005 # variables (not unlike the actual source code definition), and it will
2006 # automagically test the children for you (by default).
2007 #
2008 # Example:
2009 #
2010 # source code:
2011 # struct bar {
2012 #   union {
2013 #     int integer;
2014 #     void *ptr;
2015 #   };
2016 #   const int *iPtr;
2017 # };
2018 #
2019 # class foo {
2020 # public:
2021 #   int a;
2022 #   struct {
2023 #     int b;
2024 #     struct bar *c;
2025 #   };
2026 # };
2027 #
2028 # foo *f = new foo (); <-- break here
2029 #
2030 # We want to check all the children of "f".
2031 #
2032 # Translate the above structures into the following tree:
2033 #
2034 # set tree {
2035 #   foo f {
2036 #     {} public {
2037 #       int a {}
2038 #       anonymous struct {
2039 #         {} public {
2040 #           int b {}
2041 #           {bar *} c {
2042 #             {} public {
2043 #               anonymous union {
2044 #                 {} public {
2045 #                   int integer {}
2046 #                   {void *} ptr {}
2047 #                 }
2048 #               }
2049 #               {const int *} iPtr {
2050 #                 {const int} {*iPtr} {}
2051 #               }
2052 #             }
2053 #           }
2054 #         }
2055 #       }
2056 #     }
2057 #   }
2058 # }
2059 #
2060 # mi_walk_varobj_tree c++ $tree
2061 #
2062 # If you'd prefer to walk the tree using your own callback,
2063 # simply pass the name of the callback to mi_walk_varobj_tree.
2064 #
2065 # This callback should take one argument, the name of the variable
2066 # to process.  This name is the name of a global array holding the
2067 # variable's properties (object name, type, etc).
2068 #
2069 # An example callback:
2070 #
2071 # proc my_callback {var} {
2072 #   upvar #0 $var varobj
2073 #
2074 #   puts "my_callback: called on varobj $varobj(obj_name)"
2075 # }
2076 #
2077 # The arrays created for each variable object contain the following
2078 # members:
2079 #
2080 # obj_name     - the object name for accessing this variable via MI
2081 # display_name - the display name for this variable (exp="display_name" in
2082 #                the output of -var-list-children)
2083 # type         - the type of this variable (type="type" in the output
2084 #                of -var-list-children, or the special tag "anonymous"
2085 # path_expr    - the "-var-info-path-expression" for this variable
2086 #                NOTE: This member cannot be used reliably with typedefs.
2087 #                Use with caution!
2088 #                See notes inside get_path_expr for more.
2089 # parent       - the variable name of the parent varobj
2090 # children     - a list of children variable names (which are the
2091 #                names Tcl arrays, not object names)
2092 #
2093 # For each variable object, an array containing the above fields will
2094 # be created under the root node (conveniently called, "root").  For example,
2095 # a variable object with handle "OBJ.public.0_anonymous.a" will have
2096 # a corresponding global Tcl variable named "root.OBJ.public.0_anonymous.a".
2097 #
2098 # Note that right now, this mechanism cannot be used for recursive data
2099 # structures like linked lists.
2100
2101 namespace eval ::varobj_tree {
2102   # An index which is appended to root varobjs to ensure uniqueness.
2103   variable _root_idx 0
2104
2105   # A procedure to help with debuggging varobj trees.
2106   # VARIABLE_NAME is the name of the variable to dump.
2107   # CMD, if present, is the name of the callback to output the contstructed
2108   #   strings. By default, it uses expect's "send_log" command.
2109   # TERM, if present, is a terminating character. By default it is the newline.
2110   #
2111   # To output to the terminal (not the expect log), use
2112   # mi_varobj_tree_dump_variable my_variable puts ""
2113
2114   proc mi_varobj_tree_dump_variable {variable_name {cmd send_log} {term "\n"}} {
2115     upvar #0 $variable_name varobj
2116
2117     eval "$cmd \"VAR = $variable_name$term\""
2118
2119     # Explicitly encode the array indices, since outputting them
2120     # in some logical order is better than what "array names" might
2121     # return.
2122     foreach idx {obj_name parent display_name type path_expr} {
2123       eval "$cmd \"\t$idx = $varobj($idx)$term\""
2124     }
2125
2126     # Output children
2127     set num [llength $varobj(children)]
2128     eval "$cmd \"\tnum_children = $num$term\""
2129     if {$num > 0} {
2130       eval "$cmd \"\tchildren = $varobj(children)$term\""
2131     }
2132   }
2133
2134   # The default callback used by mi_walk_varobj_tree.  This callback
2135   # simply checks all of VAR's children.  It specifically does not test
2136   # path expressions, since that is very problematic.
2137   #
2138   # This procedure may be used in custom callbacks.
2139   proc test_children_callback {variable_name} {
2140     upvar #0 $variable_name varobj
2141
2142     if {[llength $varobj(children)] > 0} {
2143       # Construct the list of children the way mi_list_varobj_children
2144       # expects to get it:
2145       # { {obj_name display_name num_children type} ... }
2146       set children_list {}
2147       foreach child $varobj(children) {
2148         upvar #0 $child c
2149         set clist [list [string_to_regexp $c(obj_name)] \
2150                        [string_to_regexp $c(display_name)] \
2151                        [llength $c(children)]]
2152         if {[string length $c(type)] > 0} {
2153           lappend clist [string_to_regexp $c(type)]
2154         }
2155         lappend children_list $clist
2156       }
2157
2158       mi_list_varobj_children $varobj(obj_name) $children_list \
2159           "VT: list children of $varobj(obj_name)"
2160     }
2161   }
2162
2163   # Set the properties of the varobj represented by
2164   # PARENT_VARIABLE - the name of the parent's variable
2165   # OBJNAME         - the MI object name of this variable
2166   # DISP_NAME       - the display name of this variable
2167   # TYPE            - the type of this variable
2168   # PATH            - the path expression for this variable
2169   # CHILDREN        - a list of the variable's children
2170   proc create_varobj {parent_variable objname disp_name \
2171                           type path children} {
2172     upvar #0 $parent_variable parent
2173
2174     set var_name "root.$objname"
2175     global $var_name
2176     array set $var_name [list obj_name $objname]
2177     array set $var_name [list display_name $disp_name]
2178     array set $var_name [list type $type]
2179     array set $var_name [list path_expr $path]
2180     array set $var_name [list parent "$parent_variable"]
2181     array set $var_name [list children \
2182                              [get_tree_children $var_name $children]]
2183     return $var_name
2184   }
2185
2186   # Should VARIABLE be used in path expressions?  The CPLUS_FAKE_CHILD
2187   # varobjs and anonymous structs/unions are not used for path expressions.
2188   proc is_path_expr_parent {variable} {
2189     upvar #0 $variable varobj
2190
2191     # If the varobj's type is "", it is a CPLUS_FAKE_CHILD.
2192     # If the tail of the varobj's object name is "%d_anonymous",
2193     # then it represents an anonymous struct or union.
2194     if {[string length $varobj(type)] == 0 \
2195             || [regexp {[0-9]+_anonymous$} $varobj(obj_name)]} {
2196       return false
2197     }
2198
2199     return true
2200   }
2201
2202   # Return the path expression for the variable named NAME in
2203   # parent varobj whose variable name is given by PARENT_VARIABLE.
2204   proc get_path_expr {parent_variable name type} {
2205     upvar #0 $parent_variable parent
2206     upvar #0 $parent_variable path_parent
2207
2208     # If TYPE is "", this is one of the CPLUS_FAKE_CHILD varobjs,
2209     # which has no path expression.  Likewsise for anonymous structs
2210     # and unions.
2211     if {[string length $type] == 0 \
2212             || [string compare $type "anonymous"] == 0} {
2213       return ""
2214     }
2215
2216     # Find the path parent variable.
2217     while {![is_path_expr_parent $parent_variable]} {
2218       set parent_variable $path_parent(parent)
2219       upvar #0 $parent_variable path_parent
2220     }
2221
2222     # This is where things get difficult.  We do not actually know
2223     # the real type for variables defined via typedefs, so we don't actually
2224     # know whether the parent is a structure/union or not.
2225     #
2226     # So we assume everything that isn't a simple type is a compound type.
2227     set stars ""
2228     regexp {\*+} $parent(type) stars
2229     set is_compound 1
2230     if {[string index $name 0] == "*"} {
2231       set is_compound 0
2232     }
2233
2234     if {[string index $parent(type) end] == "\]"} {
2235       # Parent is an array.
2236       return "($path_parent(path_expr))\[$name\]"
2237     } elseif {$is_compound} {
2238       # Parent is a structure or union or a pointer to one.
2239       if {[string length $stars]} {
2240         set join "->"
2241       } else {
2242         set join "."
2243       }
2244
2245       global root
2246
2247       # To make matters even more hideous, varobj.c has slightly different
2248       # path expressions for C and C++.
2249       set path_expr "($path_parent(path_expr))$join$name"
2250       if {[string compare -nocase $root(language) "c"] == 0} {
2251         return $path_expr
2252       } else {
2253         return "($path_expr)"
2254       }
2255     } else {
2256       # Parent is a pointer.
2257       return "*($path_parent(path_expr))"
2258     }
2259   }
2260
2261   # Process the CHILDREN (a list of varobj_tree elements) of the variable
2262   # given by PARENT_VARIABLE.  Returns a list of children variables.
2263   proc get_tree_children {parent_variable children} {
2264     upvar #0 $parent_variable parent
2265
2266     set field_idx 0
2267     set children_list {}
2268     foreach {type name children} $children {
2269       if {[string compare $parent_variable "root"] == 0} {
2270         # Root variable
2271         variable _root_idx
2272         incr _root_idx
2273         set objname "$name$_root_idx"
2274         set disp_name "$name"
2275         set path_expr "$name"
2276       } elseif {[string compare $type "anonymous"] == 0} {
2277         # Special case: anonymous types.  In this case, NAME will either be
2278         # "struct" or "union".
2279         set objname "$parent(obj_name).${field_idx}_anonymous"
2280         set disp_name "<anonymous $name>"
2281         set path_expr ""
2282         set type "$name {...}"
2283       } else {
2284         set objname "$parent(obj_name).$name"
2285         set disp_name $name
2286         set path_expr [get_path_expr $parent_variable $name $type]
2287       }
2288
2289       lappend children_list [create_varobj $parent_variable $objname \
2290                                  $disp_name $type $path_expr $children]
2291       incr field_idx
2292     }
2293
2294     return $children_list
2295   }
2296
2297   # The main procedure to call the given CALLBACK on the elements of the
2298   # given varobj TREE.  See detailed explanation above.
2299   proc walk_tree {language tree callback} {
2300     global root
2301     variable _root_idx
2302
2303     if {[llength $tree] < 3} {
2304       error "tree does not contain enough elements"
2305     }
2306
2307     set _root_idx 0
2308
2309     # Create root node and process the tree.
2310     array set root [list language $language]
2311     array set root [list obj_name "root"]
2312     array set root [list display_name "root"]
2313     array set root [list type "root"]
2314     array set root [list path_expr "root"]
2315     array set root [list parent "root"]
2316     array set root [list children [get_tree_children root $tree]]
2317
2318     # Walk the tree
2319     set all_nodes $root(children); # a stack of nodes
2320     while {[llength $all_nodes] > 0} {
2321       # "Pop" the name of the global variable containing this varobj's
2322       # information from the stack of nodes.
2323       set var_name [lindex $all_nodes 0]
2324       set all_nodes [lreplace $all_nodes 0 0]
2325
2326       # Bring the global named in VAR_NAME into scope as the local variable
2327       # VAROBJ.
2328       upvar #0 $var_name varobj
2329
2330       # Append any children of VAROBJ to the list of nodes to walk.
2331       if {[llength $varobj(children)] > 0} {
2332         set all_nodes [concat $all_nodes $varobj(children)]
2333       }
2334
2335       # If this is a root variable, create the variable object for it.
2336       if {[string compare $varobj(parent) "root"] == 0} {
2337         mi_create_varobj $varobj(obj_name) $varobj(display_name) \
2338             "VT: create root varobj for $varobj(display_name)"
2339       }
2340
2341       # Now call the callback for VAROBJ.
2342       uplevel #0 $callback $var_name
2343     }
2344   }
2345 }
2346
2347 # The default varobj tree callback, which simply tests -var-list-children.
2348 proc mi_varobj_tree_test_children_callback {variable} {
2349   ::varobj_tree::test_children_callback $variable
2350 }
2351
2352 # Walk the variable object tree given by TREE, calling the specified
2353 # CALLBACK.  By default this uses mi_varobj_tree_test_children_callback.
2354 proc mi_walk_varobj_tree {language tree \
2355                               {callback \
2356                                    mi_varobj_tree_test_children_callback}} {
2357   ::varobj_tree::walk_tree $language $tree $callback
2358 }
2359
2360 # Build a list of key-value pairs given by the list ATTR_LIST.  Flatten
2361 # this list using the optional JOINER, a comma by default.
2362 #
2363 # The list must contain an even number of elements, which are the key-value
2364 # pairs.  Each value will be surrounded by quotes, according to the grammar,
2365 # except if the value starts with \[ or \{, when the quotes will be omitted.
2366 #
2367 # Example: mi_build_kv_pairs {a b c d e f g \[.*\]}
2368 # returns a=\"b\",c=\"d\",e=\"f\",g=\[.*\]
2369 proc mi_build_kv_pairs {attr_list {joiner ,}} {
2370     set l {}
2371     foreach {var value} $attr_list {
2372         if {[string range $value 0 1] == "\\\["
2373             || [string range $value 0 1] == "\\\{"} {
2374             lappend l "$var=$value"
2375         } else {
2376             lappend l "$var=\"$value\""
2377         }
2378     }
2379     return "[join $l $joiner]"
2380 }
2381
2382 # Construct a breakpoint regexp.  This may be used to test the output of
2383 # -break-insert, -dprintf-insert, or -break-info.
2384 #
2385 # All arguments for the breakpoint may be specified using the options
2386 # number, type, disp, enabled, addr, func, file, fullanme, line,
2387 # thread-groups, cond, evaluated-by, times, ignore, script,
2388 # and original-location.
2389 #
2390 # Only if -script and -ignore are given will they appear in the output.
2391 # Otherwise, this procedure will skip them using ".*".
2392 #
2393 # Example: mi_make_breakpoint -number 2 -file ".*/myfile.c" -line 3
2394 # will return the breakpoint:
2395 # bkpt={number="2",type=".*",disp=".*",enabled=".*",addr=".*",func=".*",
2396 #       file=".*/myfile.c",fullname=".*",line="3",thread-groups=\[.*\],
2397 #       times="0".*original-location=".*"}
2398
2399 proc mi_make_breakpoint {args} {
2400     parse_args {{number .*} {type .*} {disp .*} {enabled .*} {addr .*}
2401         {func .*} {file .*} {fullname .*} {line .*}
2402         {thread-groups \\\[.*\\\]} {times .*} {ignore 0}
2403         {script ""} {original-location .*} {cond ""} {evaluated-by ""}}
2404
2405     set attr_list {}
2406     foreach attr [list number type disp enabled addr func file \
2407                       fullname line thread-groups] {
2408         lappend attr_list $attr [set $attr]
2409     }
2410
2411     set result "bkpt={[mi_build_kv_pairs $attr_list]"
2412
2413     # There are always exceptions.
2414
2415     # If COND is not preset, do not output it.
2416     if {[string length $cond] > 0} {
2417         append result ","
2418         append result [mi_build_kv_pairs [list "cond" $cond]]
2419
2420         # When running on a remote, GDB may output who is evaluating
2421         # breakpoint conditions.
2422         if {[string length ${evaluated-by}] > 0} {
2423             append result [mi_build_kv_pairs \
2424                                [list "evaluated-by" ${evaluated-by}]]
2425         } else {
2426             append result {(,evaluated-by=".*")?}
2427         }
2428     }
2429
2430     append result ","
2431     append result [mi_build_kv_pairs [list "times" $times]]
2432
2433     # If SCRIPT and IGNORE are not present, do not output them.
2434     if {$ignore != 0} {
2435         append result ","
2436         append result [mi_build_kv_pairs [list "ignore" $ignore]]
2437         append result ","
2438     }
2439     if {[string length $script] > 0} {
2440         append result ","
2441         append result [mi_build_kv_pairs [list "script" $script]]
2442         append result ","
2443     } else {
2444         # Allow anything up until the next "official"/required attribute.
2445         # This pattern skips over script/ignore if matches on those
2446         # were not specifically required by the caller.
2447         append result ".*"
2448     }
2449     append result [mi_build_kv_pairs \
2450                        [list "original-location" ${original-location}]]
2451     append result "}"
2452     return $result
2453 }
2454
2455 # Build a breakpoint table regexp given the list of breakpoints in `bp_list',
2456 # constructed by mi_make_breakpoint.
2457 #
2458 # Example:  Construct a breakpoint table where the only attributes we
2459 # test for are the existence of three breakpoints numbered 1, 2, and 3.
2460 #
2461 # set bps {}
2462 # lappend bps [mi_make_breakpoint -number 1]
2463 # lappend bps [mi_make_breakpoint -number 2]
2464 # lappned bps [mi_make_breakpoint -number 3]
2465 # mi_make_breakpoint_table $bps
2466 # will return (abbreviated for clarity):
2467 # BreakpointTable={nr_rows="3",nr_cols="6",hdr=[{width=".*",...} ...],
2468 #   body=[bkpt={number="1",...},bkpt={number="2",...},bkpt={number="3",...}]}
2469
2470 proc mi_make_breakpoint_table {bp_list} {
2471     # Build header -- assume a standard header for all breakpoint tables.
2472     set hl {}
2473     foreach {nm hdr} [list number Num type Type disp Disp enabled Enb \
2474                           addr Address what What] {
2475         # The elements here are the MI table headers, which have the
2476         # format:
2477         # {width="7",alignment="-1",col_name="number",colhdr="Num"}
2478         lappend hl "{[mi_build_kv_pairs [list width .* alignment .* \
2479                                        col_name $nm colhdr $hdr]]}"
2480     }
2481     set header "hdr=\\\[[join $hl ,]\\\]"
2482
2483     # The caller has implicitly supplied the number of columns and rows.
2484     set nc [llength $hl]
2485     set nr [llength $bp_list]
2486
2487     # Build body -- mi_make_breakpoint has done most of the work.
2488     set body "body=\\\[[join $bp_list ,]\\\]"
2489
2490     # Assemble the final regexp.
2491     return "BreakpointTable={nr_rows=\"$nr\",nr_cols=\"$nc\",$header,$body}"
2492 }
2493
2494 # Return a 1 for configurations that do not support Python scripting.
2495 # Note: This also sets various globals that specify which version of Python
2496 # is in use.  See skip_python_tests_prompt.
2497
2498 proc mi_skip_python_tests {} {
2499     global mi_gdb_prompt
2500     return [skip_python_tests_prompt "$mi_gdb_prompt$"]
2501 }
2502
2503 # Check whether we're testing with the remote or extended-remote
2504 # targets.
2505
2506 proc mi_is_target_remote {} {
2507     global mi_gdb_prompt
2508
2509     return [gdb_is_target_remote_prompt "$mi_gdb_prompt"]
2510 }