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# Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
# 2002, 2003, 2004
# Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
# This file was written by Fred Fish. (fnf@cygnus.com)
# Generic gdb subroutines that should work for any target. If these
# need to be modified for any target, it can be done with a variable
# or by passing arguments.
load_lib libgloss.exp
global GDB
if [info exists TOOL_EXECUTABLE] {
set GDB $TOOL_EXECUTABLE;
}
if ![info exists GDB] {
if ![is_remote host] {
set GDB [findfile $base_dir/../../gdb/gdb "$base_dir/../../gdb/gdb" [transform gdb]]
} else {
set GDB [transform gdb];
}
}
verbose "using GDB = $GDB" 2
global GDBFLAGS
if ![info exists GDBFLAGS] {
set GDBFLAGS "-nx"
}
verbose "using GDBFLAGS = $GDBFLAGS" 2
# The variable gdb_prompt is a regexp which matches the gdb prompt.
# Set it if it is not already set.
global gdb_prompt
if ![info exists gdb_prompt] then {
set gdb_prompt "\[(\]gdb\[)\]"
}
# The variable fullname_syntax_POSIX is a regexp which matches a POSIX
# absolute path ie. /foo/
set fullname_syntax_POSIX "/.*/"
# The variable fullname_syntax_UNC is a regexp which matches a Windows
# UNC path ie. \\D\foo\
set fullname_syntax_UNC {\\\\[^\\]+\\.+\\}
# The variable fullname_syntax_DOS_CASE is a regexp which matches a
# particular DOS case that GDB most likely will output
# ie. \foo\, but don't match \\.*\
set fullname_syntax_DOS_CASE {\\[^\\].*\\}
# The variable fullname_syntax_DOS is a regexp which matches a DOS path
# ie. a:\foo\ && a:foo\
set fullname_syntax_DOS {[a-zA-Z]:.*\\}
# The variable fullname_syntax is a regexp which matches what GDB considers
# an absolute path. It is currently debatable if the Windows style paths
# d:foo and \abc should be considered valid as an absolute path.
# Also, the purpse of this regexp is not to recognize a well formed
# absolute path, but to say with certainty that a path is absolute.
set fullname_syntax "($fullname_syntax_POSIX|$fullname_syntax_UNC|$fullname_syntax_DOS_CASE|$fullname_syntax_DOS)"
# Needed for some tests under Cygwin.
global EXEEXT
global env
if ![info exists env(EXEEXT)] {
set EXEEXT ""
} else {
set EXEEXT $env(EXEEXT)
}
### Only procedures should come after this point.
#
# gdb_version -- extract and print the version number of GDB
#
proc default_gdb_version {} {
global GDB
global GDBFLAGS
global gdb_prompt
set fileid [open "gdb_cmd" w];
puts $fileid "q";
close $fileid;
set cmdfile [remote_download host "gdb_cmd"];
set output [remote_exec host "$GDB -nw --command $cmdfile"]
remote_file build delete "gdb_cmd";
remote_file host delete "$cmdfile";
set tmp [lindex $output 1];
set version ""
regexp " \[0-9\]\[^ \t\n\r\]+" "$tmp" version
if ![is_remote host] {
clone_output "[which $GDB] version $version $GDBFLAGS\n"
} else {
clone_output "$GDB on remote host version $version $GDBFLAGS\n"
}
}
proc gdb_version { } {
return [default_gdb_version];
}
#
# gdb_unload -- unload a file if one is loaded
#
proc gdb_unload {} {
global verbose
global GDB
global gdb_prompt
send_gdb "file\n"
gdb_expect 60 {
-re "No executable file now\[^\r\n\]*\[\r\n\]" { exp_continue }
-re "No symbol file now\[^\r\n\]*\[\r\n\]" { exp_continue }
-re "A program is being debugged already..*Kill it.*y or n. $"\
{ send_gdb "y\n"
verbose "\t\tKilling previous program being debugged"
exp_continue
}
-re "Discard symbol table from .*y or n.*$" {
send_gdb "y\n"
exp_continue
}
-re "$gdb_prompt $" {}
timeout {
perror "couldn't unload file in $GDB (timed out)."
return -1
}
}
}
# Many of the tests depend on setting breakpoints at various places and
# running until that breakpoint is reached. At times, we want to start
# with a clean-slate with respect to breakpoints, so this utility proc
# lets us do this without duplicating this code everywhere.
#
proc delete_breakpoints {} {
global gdb_prompt
# we need a larger timeout value here or this thing just confuses
# itself. May need a better implementation if possible. - guo
#
send_gdb "delete breakpoints\n"
gdb_expect 100 {
-re "Delete all breakpoints.*y or n.*$" {
send_gdb "y\n";
exp_continue
}
-re "$gdb_prompt $" { # This happens if there were no breakpoints
}
timeout { perror "Delete all breakpoints in delete_breakpoints (timeout)" ; return }
}
send_gdb "info breakpoints\n"
gdb_expect 100 {
-re "No breakpoints or watchpoints..*$gdb_prompt $" {}
-re "$gdb_prompt $" { perror "breakpoints not deleted" ; return }
-re "Delete all breakpoints.*or n.*$" {
send_gdb "y\n";
exp_continue
}
timeout { perror "info breakpoints (timeout)" ; return }
}
}
#
# Generic run command.
#
# The second pattern below matches up to the first newline *only*.
# Using ``.*$'' could swallow up output that we attempt to match
# elsewhere.
#
proc gdb_run_cmd {args} {
global gdb_prompt
if [target_info exists gdb_init_command] {
send_gdb "[target_info gdb_init_command]\n";
gdb_expect 30 {
-re "$gdb_prompt $" { }
default {
perror "gdb_init_command for target failed";
return;
}
}
}
if [target_info exists use_gdb_stub] {
if [target_info exists gdb,do_reload_on_run] {
# Specifying no file, defaults to the executable
# currently being debugged.
if { [gdb_load ""] != 0 } {
return;
}
send_gdb "continue\n";
gdb_expect 60 {
-re "Continu\[^\r\n\]*\[\r\n\]" {}
default {}
}
return;
}
if [target_info exists gdb,start_symbol] {
set start [target_info gdb,start_symbol];
} else {
set start "start";
}
send_gdb "jump *$start\n"
set start_attempt 1;
while { $start_attempt } {
# Cap (re)start attempts at three to ensure that this loop
# always eventually fails. Don't worry about trying to be
# clever and not send a command when it has failed.
if [expr $start_attempt > 3] {
perror "Jump to start() failed (retry count exceeded)";
return;
}
set start_attempt [expr $start_attempt + 1];
gdb_expect 30 {
-re "Continuing at \[^\r\n\]*\[\r\n\]" {
set start_attempt 0;
}
-re "No symbol \"_start\" in current.*$gdb_prompt $" {
perror "Can't find start symbol to run in gdb_run";
return;
}
-re "No symbol \"start\" in current.*$gdb_prompt $" {
send_gdb "jump *_start\n";
}
-re "No symbol.*context.*$gdb_prompt $" {
set start_attempt 0;
}
-re "Line.* Jump anyway.*y or n. $" {
send_gdb "y\n"
}
-re "The program is not being run.*$gdb_prompt $" {
if { [gdb_load ""] != 0 } {
return;
}
send_gdb "jump *$start\n";
}
timeout {
perror "Jump to start() failed (timeout)";
return
}
}
}
if [target_info exists gdb_stub] {
gdb_expect 60 {
-re "$gdb_prompt $" {
send_gdb "continue\n"
}
}
}
return
}
if [target_info exists gdb,do_reload_on_run] {
if { [gdb_load ""] != 0 } {
return;
}
}
send_gdb "run $args\n"
# This doesn't work quite right yet.
gdb_expect 60 {
-re "The program .* has been started already.*y or n. $" {
send_gdb "y\n"
exp_continue
}
-re "Starting program: \[^\r\n\]*" {}
}
}
# Set a breakpoint at FUNCTION. If there is an additional argument it is
# a list of options; the only currently supported option is allow-pending.
proc gdb_breakpoint { function args } {
global gdb_prompt
global decimal
set pending_response n
if {[lsearch -exact [lindex $args 0] allow-pending] != -1} {
set pending_response y
}
send_gdb "break $function\n"
# The first two regexps are what we get with -g, the third is without -g.
gdb_expect 30 {
-re "Breakpoint \[0-9\]* at .*: file .*, line $decimal.\r\n$gdb_prompt $" {}
-re "Breakpoint \[0-9\]*: file .*, line $decimal.\r\n$gdb_prompt $" {}
-re "Breakpoint \[0-9\]* at .*$gdb_prompt $" {}
-re "Breakpoint \[0-9\]* \\(.*\\) pending.*$gdb_prompt $" {
if {$pending_response == "n"} {
fail "setting breakpoint at $function"
return 0
}
}
-re "Make breakpoint pending.*y or \\\[n\\\]. $" {
send_gdb "$pending_response\n"
exp_continue
}
-re "$gdb_prompt $" { fail "setting breakpoint at $function" ; return 0 }
timeout { fail "setting breakpoint at $function (timeout)" ; return 0 }
}
return 1;
}
# Set breakpoint at function and run gdb until it breaks there.
# Since this is the only breakpoint that will be set, if it stops
# at a breakpoint, we will assume it is the one we want. We can't
# just compare to "function" because it might be a fully qualified,
# single quoted C++ function specifier. If there's an additional argument,
# pass it to gdb_breakpoint.
proc runto { function args } {
global gdb_prompt
global decimal
delete_breakpoints
if ![gdb_breakpoint $function [lindex $args 0]] {
return 0;
}
gdb_run_cmd
# the "at foo.c:36" output we get with -g.
# the "in func" output we get without -g.
gdb_expect 30 {
-re "Break.* at .*:$decimal.*$gdb_prompt $" {
return 1
}
-re "Breakpoint \[0-9\]*, \[0-9xa-f\]* in .*$gdb_prompt $" {
return 1
}
-re "$gdb_prompt $" {
fail "running to $function in runto"
return 0
}
timeout {
fail "running to $function in runto (timeout)"
return 0
}
}
return 1
}
#
# runto_main -- ask gdb to run until we hit a breakpoint at main.
# The case where the target uses stubs has to be handled
# specially--if it uses stubs, assuming we hit
# breakpoint() and just step out of the function.
#
proc runto_main { } {
global gdb_prompt
global decimal
if ![target_info exists gdb_stub] {
return [runto main]
}
delete_breakpoints
gdb_step_for_stub;
return 1
}
### Continue, and expect to hit a breakpoint.
### Report a pass or fail, depending on whether it seems to have
### worked. Use NAME as part of the test name; each call to
### continue_to_breakpoint should use a NAME which is unique within
### that test file.
proc gdb_continue_to_breakpoint {name} {
global gdb_prompt
set full_name "continue to breakpoint: $name"
send_gdb "continue\n"
gdb_expect {
-re "Breakpoint .* at .*\r\n$gdb_prompt $" {
pass $full_name
}
-re ".*$gdb_prompt $" {
fail $full_name
}
timeout {
fail "$full_name (timeout)"
}
}
}
# gdb_internal_error_resync:
#
# Answer the questions GDB asks after it reports an internal error
# until we get back to a GDB prompt. Decline to quit the debugging
# session, and decline to create a core file. Return non-zero if the
# resync succeeds.
#
# This procedure just answers whatever questions come up until it sees
# a GDB prompt; it doesn't require you to have matched the input up to
# any specific point. However, it only answers questions it sees in
# the output itself, so if you've matched a question, you had better
# answer it yourself before calling this.
#
# You can use this function thus:
#
# gdb_expect {
# ...
# -re ".*A problem internal to GDB has been detected" {
# gdb_internal_error_resync
# }
# ...
# }
#
proc gdb_internal_error_resync {} {
global gdb_prompt
set count 0
while {$count < 10} {
gdb_expect {
-re "Quit this debugging session\\? \\(y or n\\) $" {
send_gdb "n\n"
incr count
}
-re "Create a core file of GDB\\? \\(y or n\\) $" {
send_gdb "n\n"
incr count
}
-re "$gdb_prompt $" {
# We're resynchronized.
return 1
}
timeout {
perror "Could not resync from internal error (timeout)"
return 0
}
}
}
perror "Could not resync from internal error (resync count exceeded)"
return 0
}
# gdb_test_multiple COMMAND MESSAGE EXPECT_ARGUMENTS
# Send a command to gdb; test the result.
#
# COMMAND is the command to execute, send to GDB with send_gdb. If
# this is the null string no command is sent.
# MESSAGE is a message to be printed with the built-in failure patterns
# if one of them matches. If MESSAGE is empty COMMAND will be used.
# EXPECT_ARGUMENTS will be fed to expect in addition to the standard
# patterns. Pattern elements will be evaluated in the caller's
# context; action elements will be executed in the caller's context.
# Unlike patterns for gdb_test, these patterns should generally include
# the final newline and prompt.
#
# Returns:
# 1 if the test failed, according to a built-in failure pattern
# 0 if only user-supplied patterns matched
# -1 if there was an internal error.
#
# You can use this function thus:
#
# gdb_test_multiple "print foo" "test foo" {
# -re "expected output 1" {
# pass "print foo"
# }
# -re "expected output 2" {
# fail "print foo"
# }
# }
#
# The standard patterns, such as "Program exited..." and "A problem
# ...", all being implicitly appended to that list.
#
proc gdb_test_multiple { command message user_code } {
global verbose
global gdb_prompt
global GDB
upvar timeout timeout
upvar expect_out expect_out
if { $message == "" } {
set message $command
}
# TCL/EXPECT WART ALERT
# Expect does something very strange when it receives a single braced
# argument. It splits it along word separators and performs substitutions.
# This means that { "[ab]" } is evaluated as "[ab]", but { "\[ab\]" } is
# evaluated as "\[ab\]". But that's not how TCL normally works; inside a
# double-quoted list item, "\[ab\]" is just a long way of representing
# "[ab]", because the backslashes will be removed by lindex.
# Unfortunately, there appears to be no easy way to duplicate the splitting
# that expect will do from within TCL. And many places make use of the
# "\[0-9\]" construct, so we need to support that; and some places make use
# of the "[func]" construct, so we need to support that too. In order to
# get this right we have to substitute quoted list elements differently
# from braced list elements.
# We do this roughly the same way that Expect does it. We have to use two
# lists, because if we leave unquoted newlines in the argument to uplevel
# they'll be treated as command separators, and if we escape newlines
# we mangle newlines inside of command blocks. This assumes that the
# input doesn't contain a pattern which contains actual embedded newlines
# at this point!
regsub -all {\n} ${user_code} { } subst_code
set subst_code [uplevel list $subst_code]
set processed_code ""
set patterns ""
set expecting_action 0
foreach item $user_code subst_item $subst_code {
if { $item == "-n" || $item == "-notransfer" || $item == "-nocase" } {
lappend processed_code $item
continue
}
if {$item == "-indices" || $item == "-re" || $item == "-ex"} {
lappend processed_code $item
continue
}
if { $expecting_action } {
lappend processed_code "uplevel [list $item]"
set expecting_action 0
# Cosmetic, no effect on the list.
append processed_code "\n"
continue
}
set expecting_action 1
lappend processed_code $subst_item
if {$patterns != ""} {
append patterns "; "
}
append patterns "\"$subst_item\""
}
# Also purely cosmetic.
regsub -all {\r} $patterns {\\r} patterns
regsub -all {\n} $patterns {\\n} patterns
if $verbose>2 then {
send_user "Sending \"$command\" to gdb\n"
send_user "Looking to match \"$patterns\"\n"
send_user "Message is \"$message\"\n"
}
set result -1
set string "${command}\n";
if { $command != "" } {
while { "$string" != "" } {
set foo [string first "\n" "$string"];
set len [string length "$string"];
if { $foo < [expr $len - 1] } {
set str [string range "$string" 0 $foo];
if { [send_gdb "$str"] != "" } {
global suppress_flag;
if { ! $suppress_flag } {
perror "Couldn't send $command to GDB.";
}
fail "$message";
return $result;
}
# since we're checking if each line of the multi-line
# command are 'accepted' by GDB here,
# we need to set -notransfer expect option so that
# command output is not lost for pattern matching
# - guo
gdb_expect 2 {
-notransfer -re "\[\r\n\]" { verbose "partial: match" 3 }
timeout { verbose "partial: timeout" 3 }
}
set string [string range "$string" [expr $foo + 1] end];
} else {
break;
}
}
if { "$string" != "" } {
if { [send_gdb "$string"] != "" } {
global suppress_flag;
if { ! $suppress_flag } {
perror "Couldn't send $command to GDB.";
}
fail "$message";
return $result;
}
}
}
if [target_info exists gdb,timeout] {
set tmt [target_info gdb,timeout];
} else {
if [info exists timeout] {
set tmt $timeout;
} else {
global timeout;
if [info exists timeout] {
set tmt $timeout;
} else {
set tmt 60;
}
}
}
set code {
-re ".*A problem internal to GDB has been detected" {
fail "$message (GDB internal error)"
gdb_internal_error_resync
}
-re "\\*\\*\\* DOSEXIT code.*" {
if { $message != "" } {
fail "$message";
}
gdb_suppress_entire_file "GDB died";
set result -1;
}
-re "Ending remote debugging.*$gdb_prompt $" {
if ![isnative] then {
warning "Can`t communicate to remote target."
}
gdb_exit
gdb_start
set result -1
}
}
append code $processed_code
append code {
-re "Undefined\[a-z\]* command:.*$gdb_prompt $" {
perror "Undefined command \"$command\"."
fail "$message"
set result 1
}
-re "Ambiguous command.*$gdb_prompt $" {
perror "\"$command\" is not a unique command name."
fail "$message"
set result 1
}
-re "Program exited with code \[0-9\]+.*$gdb_prompt $" {
if ![string match "" $message] then {
set errmsg "$message (the program exited)"
} else {
set errmsg "$command (the program exited)"
}
fail "$errmsg"
set result -1
}
-re "EXIT code \[0-9\r\n\]+Program exited normally.*$gdb_prompt $" {
if ![string match "" $message] then {
set errmsg "$message (the program exited)"
} else {
set errmsg "$command (the program exited)"
}
fail "$errmsg"
set result -1
}
-re "The program is not being run.*$gdb_prompt $" {
if ![string match "" $message] then {
set errmsg "$message (the program is no longer running)"
} else {
set errmsg "$command (the program is no longer running)"
}
fail "$errmsg"
set result -1
}
-re "\r\n$gdb_prompt $" {
if ![string match "" $message] then {
fail "$message"
}
set result 1
}
"<return>" {
send_gdb "\n"
perror "Window too small."
fail "$message"
set result -1
}
-re "\\(y or n\\) " {
send_gdb "n\n"
perror "Got interactive prompt."
fail "$message"
set result -1
}
eof {
perror "Process no longer exists"
if { $message != "" } {
fail "$message"
}
return -1
}
full_buffer {
perror "internal buffer is full."
fail "$message"
set result -1
}
timeout {
if ![string match "" $message] then {
fail "$message (timeout)"
}
set result 1
}
}
set result 0
set code [catch {gdb_expect $tmt $code} string]
if {$code == 1} {
global errorInfo errorCode;
return -code error -errorinfo $errorInfo -errorcode $errorCode $string
} elseif {$code == 2} {
return -code return $string
} elseif {$code == 3} {
return
} elseif {$code > 4} {
return -code $code $string
}
return $result
}
# gdb_test COMMAND PATTERN MESSAGE QUESTION RESPONSE
# Send a command to gdb; test the result.
#
# COMMAND is the command to execute, send to GDB with send_gdb. If
# this is the null string no command is sent.
# PATTERN is the pattern to match for a PASS, and must NOT include
# the \r\n sequence immediately before the gdb prompt.
# MESSAGE is an optional message to be printed. If this is
# omitted, then the pass/fail messages use the command string as the
# message. (If this is the empty string, then sometimes we don't
# call pass or fail at all; I don't understand this at all.)
# QUESTION is a question GDB may ask in response to COMMAND, like
# "are you sure?"
# RESPONSE is the response to send if QUESTION appears.
#
# Returns:
# 1 if the test failed,
# 0 if the test passes,
# -1 if there was an internal error.
#
proc gdb_test { args } {
global verbose
global gdb_prompt
global GDB
upvar timeout timeout
if [llength $args]>2 then {
set message [lindex $args 2]
} else {
set message [lindex $args 0]
}
set command [lindex $args 0]
set pattern [lindex $args 1]
if [llength $args]==5 {
set question_string [lindex $args 3];
set response_string [lindex $args 4];
} else {
set question_string "^FOOBAR$"
}
return [gdb_test_multiple $command $message {
-re "\[\r\n\]*($pattern)\[\r\n\]+$gdb_prompt $" {
if ![string match "" $message] then {
pass "$message"
}
}
-re "(${question_string})$" {
send_gdb "$response_string\n";
exp_continue;
}
}]
}
# Test that a command gives an error. For pass or fail, return
# a 1 to indicate that more tests can proceed. However a timeout
# is a serious error, generates a special fail message, and causes
# a 0 to be returned to indicate that more tests are likely to fail
# as well.
proc test_print_reject { args } {
global gdb_prompt
global verbose
if [llength $args]==2 then {
set expectthis [lindex $args 1]
} else {
set expectthis "should never match this bogus string"
}
set sendthis [lindex $args 0]
if $verbose>2 then {
send_user "Sending \"$sendthis\" to gdb\n"
send_user "Looking to match \"$expectthis\"\n"
}
send_gdb "$sendthis\n"
#FIXME: Should add timeout as parameter.
gdb_expect {
-re "A .* in expression.*\\.*$gdb_prompt $" {
pass "reject $sendthis"
return 1
}
-re "Invalid syntax in expression.*$gdb_prompt $" {
pass "reject $sendthis"
return 1
}
-re "Junk after end of expression.*$gdb_prompt $" {
pass "reject $sendthis"
return 1
}
-re "Invalid number.*$gdb_prompt $" {
pass "reject $sendthis"
return 1
}
-re "Invalid character constant.*$gdb_prompt $" {
pass "reject $sendthis"
return 1
}
-re "No symbol table is loaded.*$gdb_prompt $" {
pass "reject $sendthis"
return 1
}
-re "No symbol .* in current context.*$gdb_prompt $" {
pass "reject $sendthis"
return 1
}
-re "Unmatched single quote.*$gdb_prompt $" {
pass "reject $sendthis"
return 1
}
-re "A character constant must contain at least one character.*$gdb_prompt $" {
pass "reject $sendthis"
return 1
}
-re "$expectthis.*$gdb_prompt $" {
pass "reject $sendthis"
return 1
}
-re ".*$gdb_prompt $" {
fail "reject $sendthis"
return 1
}
default {
fail "reject $sendthis (eof or timeout)"
return 0
}
}
}
# Given an input string, adds backslashes as needed to create a
# regexp that will match the string.
proc string_to_regexp {str} {
set result $str
regsub -all {[]*+.|()^$\[]} $str {\\&} result
return $result
}
# Same as gdb_test, but the second parameter is not a regexp,
# but a string that must match exactly.
proc gdb_test_exact { args } {
upvar timeout timeout
set command [lindex $args 0]
# This applies a special meaning to a null string pattern. Without
# this, "$pattern\r\n$gdb_prompt $" will match anything, including error
# messages from commands that should have no output except a new
# prompt. With this, only results of a null string will match a null
# string pattern.
set pattern [lindex $args 1]
if [string match $pattern ""] {
set pattern [string_to_regexp [lindex $args 0]]
} else {
set pattern [string_to_regexp [lindex $args 1]]
}
# It is most natural to write the pattern argument with only
# embedded \n's, especially if you are trying to avoid Tcl quoting
# problems. But gdb_expect really wants to see \r\n in patterns. So
# transform the pattern here. First transform \r\n back to \n, in
# case some users of gdb_test_exact already do the right thing.
regsub -all "\r\n" $pattern "\n" pattern
regsub -all "\n" $pattern "\r\n" pattern
if [llength $args]==3 then {
set message [lindex $args 2]
} else {
set message $command
}
return [gdb_test $command $pattern $message]
}
proc gdb_reinitialize_dir { subdir } {
global gdb_prompt
if [is_remote host] {
return "";
}
send_gdb "dir\n"
gdb_expect 60 {
-re "Reinitialize source path to empty.*y or n. " {
send_gdb "y\n"
gdb_expect 60 {
-re "Source directories searched.*$gdb_prompt $" {
send_gdb "dir $subdir\n"
gdb_expect 60 {
-re "Source directories searched.*$gdb_prompt $" {
verbose "Dir set to $subdir"
}
-re "$gdb_prompt $" {
perror "Dir \"$subdir\" failed."
}
}
}
-re "$gdb_prompt $" {
perror "Dir \"$subdir\" failed."
}
}
}
-re "$gdb_prompt $" {
perror "Dir \"$subdir\" failed."
}
}
}
#
# gdb_exit -- exit the GDB, killing the target program if necessary
#
proc default_gdb_exit {} {
global GDB
global GDBFLAGS
global verbose
global gdb_spawn_id;
gdb_stop_suppressing_tests;
if ![info exists gdb_spawn_id] {
return;
}
verbose "Quitting $GDB $GDBFLAGS"
if { [is_remote host] && [board_info host exists fileid] } {
send_gdb "quit\n";
gdb_expect 10 {
-re "y or n" {
send_gdb "y\n";
exp_continue;
}
-re "DOSEXIT code" { }
default { }
}
}
if ![is_remote host] {
remote_close host;
}
unset gdb_spawn_id
}
# Load a file into the debugger.
# The return value is 0 for success, -1 for failure.
#
# This procedure also set the global variable GDB_FILE_CMD_DEBUG_INFO
# to one of these values:
#
# debug file was loaded successfully and has debug information
# nodebug file was loaded successfully and has no debug information
# fail file was not loaded
#
# I tried returning this information as part of the return value,
# but ran into a mess because of the many re-implementations of
# gdb_load in config/*.exp.
#
# TODO: gdb.base/sepdebug.exp and gdb.stabs/weird.exp might be able to use
# this if they can get more information set.
proc gdb_file_cmd { arg } {
global gdb_prompt
global verbose
global GDB
# Set whether debug info was found.
# Default to "fail".
global gdb_file_cmd_debug_info
set gdb_file_cmd_debug_info "fail"
if [is_remote host] {
set arg [remote_download host $arg]
if { $arg == "" } {
perror "download failed"
return -1
}
}
send_gdb "file $arg\n"
gdb_expect 120 {
-re "Reading symbols from.*no debugging symbols found.*done.*$gdb_prompt $" {
verbose "\t\tLoaded $arg into the $GDB with no debugging symbols"
set gdb_file_cmd_debug_info "nodebug"
return 0
}
-re "Reading symbols from.*done.*$gdb_prompt $" {
verbose "\t\tLoaded $arg into the $GDB"
set gdb_file_cmd_debug_info "debug"
return 0
}
-re "A program is being debugged already.*Kill it.*y or n. $" {
send_gdb "y\n"
verbose "\t\tKilling previous program being debugged"
exp_continue
}
-re "Load new symbol table from \".*\".*y or n. $" {
send_gdb "y\n"
gdb_expect 120 {
-re "Reading symbols from.*done.*$gdb_prompt $" {
verbose "\t\tLoaded $arg with new symbol table into $GDB"
set gdb_file_cmd_debug_info "debug"
return 0
}
timeout {
perror "(timeout) Couldn't load $arg, other program already loaded."
return -1
}
}
}
-re "No such file or directory.*$gdb_prompt $" {
perror "($arg) No such file or directory"
return -1
}
-re "$gdb_prompt $" {
perror "couldn't load $arg into $GDB."
return -1
}
timeout {
perror "couldn't load $arg into $GDB (timed out)."
return -1
}
eof {
# This is an attempt to detect a core dump, but seems not to
# work. Perhaps we need to match .* followed by eof, in which
# gdb_expect does not seem to have a way to do that.
perror "couldn't load $arg into $GDB (end of file)."
return -1
}
}
}
#
# start gdb -- start gdb running, default procedure
#
# When running over NFS, particularly if running many simultaneous
# tests on different hosts all using the same server, things can
# get really slow. Give gdb at least 3 minutes to start up.
#
proc default_gdb_start { } {
global verbose
global GDB
global GDBFLAGS
global gdb_prompt
global timeout
global gdb_spawn_id;
gdb_stop_suppressing_tests;
verbose "Spawning $GDB -nw $GDBFLAGS"
if [info exists gdb_spawn_id] {
return 0;
}
if ![is_remote host] {
if { [which $GDB] == 0 } then {
perror "$GDB does not exist."
exit 1
}
}
set res [remote_spawn host "$GDB -nw $GDBFLAGS [host_info gdb_opts]"];
if { $res < 0 || $res == "" } {
perror "Spawning $GDB failed."
return 1;
}
gdb_expect 360 {
-re "\[\r\n\]$gdb_prompt $" {
verbose "GDB initialized."
}
-re "$gdb_prompt $" {
perror "GDB never initialized."
return -1
}
timeout {
perror "(timeout) GDB never initialized after 10 seconds."
remote_close host;
return -1
}
}
set gdb_spawn_id -1;
# force the height to "unlimited", so no pagers get used
send_gdb "set height 0\n"
gdb_expect 10 {
-re "$gdb_prompt $" {
verbose "Setting height to 0." 2
}
timeout {
warning "Couldn't set the height to 0"
}
}
# force the width to "unlimited", so no wraparound occurs
send_gdb "set width 0\n"
gdb_expect 10 {
-re "$gdb_prompt $" {
verbose "Setting width to 0." 2
}
timeout {
warning "Couldn't set the width to 0."
}
}
return 0;
}
# Return a 1 for configurations for which we don't even want to try to
# test C++.
proc skip_cplus_tests {} {
if { [istarget "d10v-*-*"] } {
return 1
}
if { [istarget "h8300-*-*"] } {
return 1
}
# The C++ IO streams are too large for HC11/HC12 and are thus not
# available. The gdb C++ tests use them and don't compile.
if { [istarget "m6811-*-*"] } {
return 1
}
if { [istarget "m6812-*-*"] } {
return 1
}
return 0
}
# Return a 1 if I don't even want to try to test FORTRAN.
proc skip_fortran_tests {} {
return 0
}
# Run a test on the target to see if it supports vmx hardware. Return 0 if so,
# 1 if it does not. Based on 'check_vmx_hw_available' from the GCC testsuite.
proc skip_altivec_tests {} {
global skip_vmx_tests_saved
global srcdir subdir gdb_prompt
# Use the cached value, if it exists.
set me "skip_altivec_tests"
if [info exists skip_vmx_tests_saved] {
verbose "$me: returning saved $skip_vmx_tests_saved" 2
return $skip_vmx_tests_saved
}
# Some simulators are known to not support VMX instructions.
if { [istarget powerpc-*-eabi] || [istarget powerpc*-*-eabispe] } {
verbose "$me: target known to not support VMX, returning 1" 2
return [set $skip_vmx_tests_saved 1]
}
# Make sure we have a compiler that understands altivec.
set compile_flags {debug additional_flags=-w}
if [get_compiler_info not-used] {
warning "Could not get compiler info"
return 1
}
if [test_compiler_info gcc*] {
set compile_flags "$compile_flags additional_flags=-maltivec"
} elseif [test_compiler_info xlc*] {
set compile_flags "$compile_flags additional_flags=-qaltivec"
} else {
verbose "Could not compile with altivec support, returning 1" 2
return 1
}
# Set up, compile, and execute a test program containing VMX instructions.
# Include the current process ID in the file names to prevent conflicts
# with invocations for multiple testsuites.
set src vmx[pid].c
set exe vmx[pid].x
set f [open $src "w"]
puts $f "int main() {"
puts $f "#ifdef __MACH__"
puts $f " asm volatile (\"vor v0,v0,v0\");"
puts $f "#else"
puts $f " asm volatile (\"vor 0,0,0\");"
puts $f "#endif"
puts $f " return 0; }"
close $f
verbose "$me: compiling testfile $src" 2
set lines [gdb_compile $src $exe executable $compile_flags]
file delete $src
if ![string match "" $lines] then {
verbose "$me: testfile compilation failed, returning 1" 2
return [set skip_vmx_tests_saved 1]
}
# No error message, compilation succeeded so now run it via gdb.
gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_load "$exe"
gdb_run_cmd
gdb_expect {
-re ".*Illegal instruction.*${gdb_prompt} $" {
verbose -log "\n$me altivec hardware not detected"
set skip_vmx_tests_saved 1
}
-re ".*Program exited normally.*${gdb_prompt} $" {
verbose -log "\n$me: altivec hardware detected"
set skip_vmx_tests_saved 0
}
default {
warning "\n$me: default case taken"
set skip_vmx_tests_saved 1
}
}
gdb_exit
remote_file build delete $exe
verbose "$me: returning $skip_vmx_tests_saved" 2
return $skip_vmx_tests_saved
}
# Skip all the tests in the file if you are not on an hppa running
# hpux target.
proc skip_hp_tests {} {
eval set skip_hp [ expr ![isnative] || ![istarget "hppa*-*-hpux*"] ]
verbose "Skip hp tests is $skip_hp"
return $skip_hp
}
set compiler_info "unknown"
set gcc_compiled 0
set hp_cc_compiler 0
set hp_aCC_compiler 0
# Figure out what compiler I am using.
#
# BINFILE is a "compiler information" output file. This implementation
# does not use BINFILE.
#
# ARGS can be empty or "C++". If empty, "C" is assumed.
#
# There are several ways to do this, with various problems.
#
# [ gdb_compile -E $ifile -o $binfile.ci ]
# source $binfile.ci
#
# Single Unix Spec v3 says that "-E -o ..." together are not
# specified. And in fact, the native compiler on hp-ux 11 (among
# others) does not work with "-E -o ...". Most targets used to do
# this, and it mostly worked, because it works with gcc.
#
# [ catch "exec $compiler -E $ifile > $binfile.ci" exec_output ]
# source $binfile.ci
#
# This avoids the problem with -E and -o together. This almost works
# if the build machine is the same as the host machine, which is
# usually true of the targets which are not gcc. But this code does
# not figure which compiler to call, and it always ends up using the C
# compiler. Not good for setting hp_aCC_compiler. Targets
# hppa*-*-hpux* and mips*-*-irix* used to do this.
#
# [ gdb_compile -E $ifile > $binfile.ci ]
# source $binfile.ci
#
# dejagnu target_compile says that it supports output redirection,
# but the code is completely different from the normal path and I
# don't want to sweep the mines from that path. So I didn't even try
# this.
#
# set cppout [ gdb_compile $ifile "" preprocess $args quiet ]
# eval $cppout
#
# I actually do this for all targets now. gdb_compile runs the right
# compiler, and TCL captures the output, and I eval the output.
#
# Unfortunately, expect logs the output of the command as it goes by,
# and dejagnu helpfully prints a second copy of it right afterwards.
# So I turn off expect logging for a moment.
#
# [ gdb_compile $ifile $ciexe_file executable $args ]
# [ remote_exec $ciexe_file ]
# [ source $ci_file.out ]
#
# I could give up on -E and just do this.
# I didn't get desperate enough to try this.
#
# -- chastain 2004-01-06
proc get_compiler_info {binfile args} {
# For compiler.c and compiler.cc
global srcdir
# I am going to play with the log to keep noise out.
global outdir
global tool
# These come from compiler.c or compiler.cc
global compiler_info
# Legacy global data symbols.
global gcc_compiled
global hp_cc_compiler
global hp_aCC_compiler
# Choose which file to preprocess.
set ifile "${srcdir}/lib/compiler.c"
if { [llength $args] > 0 && [lindex $args 0] == "c++" } {
set ifile "${srcdir}/lib/compiler.cc"
}
# Run $ifile through the right preprocessor.
# Toggle gdb.log to keep the compiler output out of the log.
log_file
set cppout [ gdb_compile "${ifile}" "" preprocess [list "$args" quiet] ]
log_file -a "$outdir/$tool.log"
# Eval the output.
set unknown 0
foreach cppline [ split "$cppout" "\n" ] {
if { [ regexp "^#" "$cppline" ] } {
# line marker
} elseif { [ regexp "^\[\n\r\t \]*$" "$cppline" ] } {
# blank line
} elseif { [ regexp "^\[\n\r\t \]*set\[\n\r\t \]" "$cppline" ] } {
# eval this line
verbose "get_compiler_info: $cppline" 2
eval "$cppline"
} else {
# unknown line
verbose -log "get_compiler_info: $cppline"
set unknown 1
}
}
# Reset to unknown compiler if any diagnostics happened.
if { $unknown } {
set compiler_info "unknown"
}
# Set the legacy symbols.
set gcc_compiled 0
set hp_cc_compiler 0
set hp_aCC_compiler 0
if { [regexp "^gcc-1-" "$compiler_info" ] } { set gcc_compiled 1 }
if { [regexp "^gcc-2-" "$compiler_info" ] } { set gcc_compiled 2 }
if { [regexp "^gcc-3-" "$compiler_info" ] } { set gcc_compiled 3 }
if { [regexp "^gcc-4-" "$compiler_info" ] } { set gcc_compiled 4 }
if { [regexp "^gcc-5-" "$compiler_info" ] } { set gcc_compiled 5 }
if { [regexp "^hpcc-" "$compiler_info" ] } { set hp_cc_compiler 1 }
if { [regexp "^hpacc-" "$compiler_info" ] } { set hp_aCC_compiler 1 }
# Log what happened.
verbose -log "get_compiler_info: $compiler_info"
# Most compilers will evaluate comparisons and other boolean
# operations to 0 or 1.
uplevel \#0 { set true 1 }
uplevel \#0 { set false 0 }
# Use of aCC results in boolean results being displayed as
# "true" or "false"
if { $hp_aCC_compiler } {
uplevel \#0 { set true true }
uplevel \#0 { set false false }
}
return 0;
}
proc test_compiler_info { {compiler ""} } {
global compiler_info
# if no arg, return the compiler_info string
if [string match "" $compiler] {
if [info exists compiler_info] {
return $compiler_info
} else {
perror "No compiler info found."
}
}
return [string match $compiler $compiler_info]
}
set gdb_wrapper_initialized 0
proc gdb_wrapper_init { args } {
global gdb_wrapper_initialized;
global gdb_wrapper_file;
global gdb_wrapper_flags;
if { $gdb_wrapper_initialized == 1 } { return; }
if {[target_info exists needs_status_wrapper] && \
[target_info needs_status_wrapper] != "0"} {
set result [build_wrapper "testglue.o"];
if { $result != "" } {
set gdb_wrapper_file [lindex $result 0];
set gdb_wrapper_flags [lindex $result 1];
} else {
warning "Status wrapper failed to build."
}
}
set gdb_wrapper_initialized 1
}
proc gdb_compile {source dest type options} {
global GDB_TESTCASE_OPTIONS;
global gdb_wrapper_file;
global gdb_wrapper_flags;
global gdb_wrapper_initialized;
# Add platform-specific options if a shared library was specified using
# "shlib=librarypath" in OPTIONS.
set new_options ""
set shlib_found 0
foreach opt $options {
if [regexp {^shlib=(.*)} $opt dummy_var shlib_name] {
if [test_compiler_info "xlc-*"] {
# IBM xlc compiler doesn't accept shared library named other
# than .so: use "-Wl," to bypass this
lappend source "-Wl,$shlib_name"
} else {
lappend source $shlib_name
}
if {$shlib_found == 0} {
set shlib_found 1
if { ([test_compiler_info "gcc-*"]
&& ([istarget "powerpc*-*-aix*"]
|| [istarget "rs6000*-*-aix*"] )) } {
lappend options "additional_flags=-L${objdir}/${subdir}"
} elseif { [istarget "mips-sgi-irix*"] } {
lappend options "additional_flags=-rpath ${objdir}/${subdir}"
}
}
} else {
lappend new_options $opt
}
}
set options $new_options
if [target_info exists gdb_stub] {
set options2 { "additional_flags=-Dusestubs" }
lappend options "libs=[target_info gdb_stub]";
set options [concat $options2 $options]
}
if [target_info exists is_vxworks] {
set options2 { "additional_flags=-Dvxworks" }
lappend options "libs=[target_info gdb_stub]";
set options [concat $options2 $options]
}
if [info exists GDB_TESTCASE_OPTIONS] {
lappend options "additional_flags=$GDB_TESTCASE_OPTIONS";
}
verbose "options are $options"
verbose "source is $source $dest $type $options"
if { $gdb_wrapper_initialized == 0 } { gdb_wrapper_init }
if {[target_info exists needs_status_wrapper] && \
[target_info needs_status_wrapper] != "0" && \
[info exists gdb_wrapper_file]} {
lappend options "libs=${gdb_wrapper_file}"
lappend options "ldflags=${gdb_wrapper_flags}"
}
set result [target_compile $source $dest $type $options];
regsub "\[\r\n\]*$" "$result" "" result;
regsub "^\[\r\n\]*" "$result" "" result;
if { $result != "" && [lsearch $options quiet] == -1} {
clone_output "gdb compile failed, $result"
}
return $result;
}
# This is just like gdb_compile, above, except that it tries compiling
# against several different thread libraries, to see which one this
# system has.
proc gdb_compile_pthreads {source dest type options} {
set built_binfile 0
set why_msg "unrecognized error"
foreach lib {-lpthreads -lpthread -lthread} {
# This kind of wipes out whatever libs the caller may have
# set. Or maybe theirs will override ours. How infelicitous.
set options_with_lib [concat $options [list libs=$lib quiet]]
set ccout [gdb_compile $source $dest $type $options_with_lib]
switch -regexp -- $ccout {
".*no posix threads support.*" {
set why_msg "missing threads include file"
break
}
".*cannot open -lpthread.*" {
set why_msg "missing runtime threads library"
}
".*Can't find library for -lpthread.*" {
set why_msg "missing runtime threads library"
}
{^$} {
pass "successfully compiled posix threads test case"
set built_binfile 1
break
}
}
}
if {!$built_binfile} {
unsupported "Couldn't compile $source: ${why_msg}"
return -1
}
}
# Build a shared library from SOURCES. You must use get_compiler_info
# first.
proc gdb_compile_shlib {sources dest options} {
set obj_options $options
switch -glob [test_compiler_info] {
"xlc-*" {
lappend obj_options "additional_flags=-qpic"
}
"gcc-*" {
if { !([istarget "powerpc*-*-aix*"]
|| [istarget "rs6000*-*-aix*"]) } {
lappend obj_options "additional_flags=-fpic"
}
}
default {
switch -glob [istarget] {
"hppa*-hp-hpux*" {
lappend obj_options "additional_flags=+z"
}
"mips-sgi-irix*" {
# Disable SGI compiler's implicit -Dsgi
lappend obj_options "additional_flags=-Usgi"
}
default {
# don't know what the compiler is...
}
}
}
}
set outdir [file dirname $dest]
set objects ""
foreach source $sources {
set sourcebase [file tail $source]
if {[gdb_compile $source "${outdir}/${sourcebase}.o" object $obj_options] != ""} {
return -1
}
lappend objects ${outdir}/${sourcebase}.o
}
if [istarget "hppa*-*-hpux*"] {
remote_exec build "ld -b ${objects} -o ${dest}"
} else {
set link_options $options
if [test_compiler_info "xlc-*"] {
lappend link_options "additional_flags=-qmkshrobj"
} else {
lappend link_options "additional_flags=-shared"
}
if {[gdb_compile "${objects}" "${dest}" executable $link_options] != ""} {
return -1
}
}
}
# This is just like gdb_compile_pthreads, above, except that we always add the
# objc library for compiling Objective-C programs
proc gdb_compile_objc {source dest type options} {
set built_binfile 0
set why_msg "unrecognized error"
foreach lib {-lobjc -lpthreads -lpthread -lthread solaris} {
# This kind of wipes out whatever libs the caller may have
# set. Or maybe theirs will override ours. How infelicitous.
if { $lib == "solaris" } {
set lib "-lpthread -lposix4"
}
if { $lib != "-lobjc" } {
set lib "-lobjc $lib"
}
set options_with_lib [concat $options [list libs=$lib quiet]]
set ccout [gdb_compile $source $dest $type $options_with_lib]
switch -regexp -- $ccout {
".*no posix threads support.*" {
set why_msg "missing threads include file"
break
}
".*cannot open -lpthread.*" {
set why_msg "missing runtime threads library"
}
".*Can't find library for -lpthread.*" {
set why_msg "missing runtime threads library"
}
{^$} {
pass "successfully compiled objc with posix threads test case"
set built_binfile 1
break
}
}
}
if {!$built_binfile} {
unsupported "Couldn't compile $source: ${why_msg}"
return -1
}
}
proc send_gdb { string } {
global suppress_flag;
if { $suppress_flag } {
return "suppressed";
}
return [remote_send host "$string"];
}
#
#
proc gdb_expect { args } {
if { [llength $args] == 2 && [lindex $args 0] != "-re" } {
set gtimeout [lindex $args 0];
set expcode [list [lindex $args 1]];
} else {
upvar timeout timeout;
set expcode $args;
if [target_info exists gdb,timeout] {
if [info exists timeout] {
if { $timeout < [target_info gdb,timeout] } {
set gtimeout [target_info gdb,timeout];
} else {
set gtimeout $timeout;
}
} else {
set gtimeout [target_info gdb,timeout];
}
}
if ![info exists gtimeout] {
global timeout;
if [info exists timeout] {
set gtimeout $timeout;
} else {
# Eeeeew.
set gtimeout 60;
}
}
}
global suppress_flag;
global remote_suppress_flag;
if [info exists remote_suppress_flag] {
set old_val $remote_suppress_flag;
}
if [info exists suppress_flag] {
if { $suppress_flag } {
set remote_suppress_flag 1;
}
}
set code [catch \
{uplevel remote_expect host $gtimeout $expcode} string];
if [info exists old_val] {
set remote_suppress_flag $old_val;
} else {
if [info exists remote_suppress_flag] {
unset remote_suppress_flag;
}
}
if {$code == 1} {
global errorInfo errorCode;
return -code error -errorinfo $errorInfo -errorcode $errorCode $string
} elseif {$code == 2} {
return -code return $string
} elseif {$code == 3} {
return
} elseif {$code > 4} {
return -code $code $string
}
}
# gdb_expect_list MESSAGE SENTINEL LIST -- expect a sequence of outputs
#
# Check for long sequence of output by parts.
# MESSAGE: is the test message to be printed with the test success/fail.
# SENTINEL: Is the terminal pattern indicating that output has finished.
# LIST: is the sequence of outputs to match.
# If the sentinel is recognized early, it is considered an error.
#
# Returns:
# 1 if the test failed,
# 0 if the test passes,
# -1 if there was an internal error.
#
proc gdb_expect_list {test sentinel list} {
global gdb_prompt
global suppress_flag
set index 0
set ok 1
if { $suppress_flag } {
set ok 0
unresolved "${test}"
}
while { ${index} < [llength ${list}] } {
set pattern [lindex ${list} ${index}]
set index [expr ${index} + 1]
if { ${index} == [llength ${list}] } {
if { ${ok} } {
gdb_expect {
-re "${pattern}${sentinel}" {
# pass "${test}, pattern ${index} + sentinel"
}
-re "${sentinel}" {
fail "${test} (pattern ${index} + sentinel)"
set ok 0
}
-re ".*A problem internal to GDB has been detected" {
fail "${test} (GDB internal error)"
set ok 0
gdb_internal_error_resync
}
timeout {
fail "${test} (pattern ${index} + sentinel) (timeout)"
set ok 0
}
}
} else {
# unresolved "${test}, pattern ${index} + sentinel"
}
} else {
if { ${ok} } {
gdb_expect {
-re "${pattern}" {
# pass "${test}, pattern ${index}"
}
-re "${sentinel}" {
fail "${test} (pattern ${index})"
set ok 0
}
-re ".*A problem internal to GDB has been detected" {
fail "${test} (GDB internal error)"
set ok 0
gdb_internal_error_resync
}
timeout {
fail "${test} (pattern ${index}) (timeout)"
set ok 0
}
}
} else {
# unresolved "${test}, pattern ${index}"
}
}
}
if { ${ok} } {
pass "${test}"
return 0
} else {
return 1
}
}
#
#
proc gdb_suppress_entire_file { reason } {
global suppress_flag;
warning "$reason\n";
set suppress_flag -1;
}
#
# Set suppress_flag, which will cause all subsequent calls to send_gdb and
# gdb_expect to fail immediately (until the next call to
# gdb_stop_suppressing_tests).
#
proc gdb_suppress_tests { args } {
global suppress_flag;
return; # fnf - disable pending review of results where
# testsuite ran better without this
incr suppress_flag;
if { $suppress_flag == 1 } {
if { [llength $args] > 0 } {
warning "[lindex $args 0]\n";
} else {
warning "Because of previous failure, all subsequent tests in this group will automatically fail.\n";
}
}
}
#
# Clear suppress_flag.
#
proc gdb_stop_suppressing_tests { } {
global suppress_flag;
if [info exists suppress_flag] {
if { $suppress_flag > 0 } {
set suppress_flag 0;
clone_output "Tests restarted.\n";
}
} else {
set suppress_flag 0;
}
}
proc gdb_clear_suppressed { } {
global suppress_flag;
set suppress_flag 0;
}
proc gdb_start { } {
default_gdb_start
}
proc gdb_exit { } {
catch default_gdb_exit
}
#
# gdb_load -- load a file into the debugger.
# Many files in config/*.exp override this procedure.
#
proc gdb_load { arg } {
return [gdb_file_cmd $arg]
}
proc gdb_continue { function } {
global decimal
return [gdb_test "continue" ".*Breakpoint $decimal, $function .*" "continue to $function"];
}
proc default_gdb_init { args } {
global gdb_wrapper_initialized
gdb_clear_suppressed;
# Make sure that the wrapper is rebuilt
# with the appropriate multilib option.
set gdb_wrapper_initialized 0
# Uh, this is lame. Really, really, really lame. But there's this *one*
# testcase that will fail in random places if we don't increase this.
match_max -d 20000
# We want to add the name of the TCL testcase to the PASS/FAIL messages.
if { [llength $args] > 0 } {
global pf_prefix
set file [lindex $args 0];
set pf_prefix "[file tail [file dirname $file]]/[file tail $file]:";
}
global gdb_prompt;
if [target_info exists gdb_prompt] {
set gdb_prompt [target_info gdb_prompt];
} else {
set gdb_prompt "\\(gdb\\)"
}
}
proc gdb_init { args } {
return [eval default_gdb_init $args];
}
proc gdb_finish { } {
gdb_exit;
}
global debug_format
set debug_format "unknown"
# Run the gdb command "info source" and extract the debugging format
# information from the output and save it in debug_format.
proc get_debug_format { } {
global gdb_prompt
global verbose
global expect_out
global debug_format
set debug_format "unknown"
send_gdb "info source\n"
gdb_expect 10 {
-re "Compiled with (.*) debugging format.\r\n.*$gdb_prompt $" {
set debug_format $expect_out(1,string)
verbose "debug format is $debug_format"
return 1;
}
-re "No current source file.\r\n$gdb_prompt $" {
perror "get_debug_format used when no current source file"
return 0;
}
-re "$gdb_prompt $" {
warning "couldn't check debug format (no valid response)."
return 1;
}
timeout {
warning "couldn't check debug format (timed out)."
return 1;
}
}
}
# Return true if FORMAT matches the debug format the current test was
# compiled with. FORMAT is a shell-style globbing pattern; it can use
# `*', `[...]', and so on.
#
# This function depends on variables set by `get_debug_format', above.
proc test_debug_format {format} {
global debug_format
return [expr [string match $format $debug_format] != 0]
}
# Like setup_xfail, but takes the name of a debug format (DWARF 1,
# COFF, stabs, etc). If that format matches the format that the
# current test was compiled with, then the next test is expected to
# fail for any target. Returns 1 if the next test or set of tests is
# expected to fail, 0 otherwise (or if it is unknown). Must have
# previously called get_debug_format.
proc setup_xfail_format { format } {
set ret [test_debug_format $format];
if {$ret} then {
setup_xfail "*-*-*"
}
return $ret;
}
proc gdb_step_for_stub { } {
global gdb_prompt;
if ![target_info exists gdb,use_breakpoint_for_stub] {
if [target_info exists gdb_stub_step_command] {
set command [target_info gdb_stub_step_command];
} else {
set command "step";
}
send_gdb "${command}\n";
set tries 0;
gdb_expect 60 {
-re "(main.* at |.*in .*start).*$gdb_prompt" {
return;
}
-re ".*$gdb_prompt" {
incr tries;
if { $tries == 5 } {
fail "stepping out of breakpoint function";
return;
}
send_gdb "${command}\n";
exp_continue;
}
default {
fail "stepping out of breakpoint function";
return;
}
}
}
send_gdb "where\n";
gdb_expect {
-re "main\[^\r\n\]*at \(\[^:]+\):\(\[0-9\]+\)" {
set file $expect_out(1,string);
set linenum [expr $expect_out(2,string) + 1];
set breakplace "${file}:${linenum}";
}
default {}
}
send_gdb "break ${breakplace}\n";
gdb_expect 60 {
-re "Breakpoint (\[0-9\]+) at.*$gdb_prompt" {
set breakpoint $expect_out(1,string);
}
-re "Breakpoint (\[0-9\]+): file.*$gdb_prompt" {
set breakpoint $expect_out(1,string);
}
default {}
}
send_gdb "continue\n";
gdb_expect 60 {
-re "Breakpoint ${breakpoint},.*$gdb_prompt" {
gdb_test "delete $breakpoint" ".*" "";
return;
}
default {}
}
}
# gdb_get_line_number TEXT [FILE]
#
# Search the source file FILE, and return the line number of the
# first line containing TEXT. If no match is found, return -1.
#
# TEXT is a string literal, not a regular expression.
#
# The default value of FILE is "$srcdir/$subdir/$srcfile". If FILE is
# specified, and does not start with "/", then it is assumed to be in
# "$srcdir/$subdir". This is awkward, and can be fixed in the future,
# by changing the callers and the interface at the same time.
# In particular: gdb.base/break.exp, gdb.base/condbreak.exp,
# gdb.base/ena-dis-br.exp.
#
# Use this function to keep your test scripts independent of the
# exact line numbering of the source file. Don't write:
#
# send_gdb "break 20"
#
# This means that if anyone ever edits your test's source file,
# your test could break. Instead, put a comment like this on the
# source file line you want to break at:
#
# /* breakpoint spot: frotz.exp: test name */
#
# and then write, in your test script (which we assume is named
# frotz.exp):
#
# send_gdb "break [gdb_get_line_number "frotz.exp: test name"]\n"
#
# (Yes, Tcl knows how to handle the nested quotes and brackets.
# Try this:
# $ tclsh
# % puts "foo [lindex "bar baz" 1]"
# foo baz
# %
# Tcl is quite clever, for a little stringy language.)
#
# ===
#
# The previous implementation of this procedure used the gdb search command.
# This version is different:
#
# . It works with MI, and it also works when gdb is not running.
#
# . It operates on the build machine, not the host machine.
#
# . For now, this implementation fakes a current directory of
# $srcdir/$subdir to be compatible with the old implementation.
# This will go away eventually and some callers will need to
# be changed.
#
# . The TEXT argument is literal text and matches literally,
# not a regular expression as it was before.
#
# . State changes in gdb, such as changing the current file
# and setting $_, no longer happen.
#
# After a bit of time we can forget about the differences from the
# old implementation.
#
# --chastain 2004-08-05
proc gdb_get_line_number { text { file "" } } {
global srcdir
global subdir
global srcfile
if { "$file" == "" } then {
set file "$srcfile"
}
if { ! [regexp "^/" "$file"] } then {
set file "$srcdir/$subdir/$file"
}
if { [ catch { set fd [open "$file"] } message ] } then {
perror "$message"
return -1
}
set found -1
for { set line 1 } { 1 } { incr line } {
if { [ catch { set nchar [gets "$fd" body] } message ] } then {
perror "$message"
return -1
}
if { $nchar < 0 } then {
break
}
if { [string first "$text" "$body"] >= 0 } then {
set found $line
break
}
}
if { [ catch { close "$fd" } message ] } then {
perror "$message"
return -1
}
return $found
}
# gdb_continue_to_end:
# The case where the target uses stubs has to be handled specially. If a
# stub is used, we set a breakpoint at exit because we cannot rely on
# exit() behavior of a remote target.
#
# mssg is the error message that gets printed.
proc gdb_continue_to_end {mssg} {
if [target_info exists use_gdb_stub] {
if {![gdb_breakpoint "exit"]} {
return 0
}
gdb_test "continue" "Continuing..*Breakpoint .*exit.*" \
"continue until exit at $mssg"
} else {
# Continue until we exit. Should not stop again.
# Don't bother to check the output of the program, that may be
# extremely tough for some remote systems.
gdb_test "continue"\
"Continuing.\[\r\n0-9\]+(... EXIT code 0\[\r\n\]+|Program exited normally\\.).*"\
"continue until exit at $mssg"
}
}
proc rerun_to_main {} {
global gdb_prompt
if [target_info exists use_gdb_stub] {
gdb_run_cmd
gdb_expect {
-re ".*Breakpoint .*main .*$gdb_prompt $"\
{pass "rerun to main" ; return 0}
-re "$gdb_prompt $"\
{fail "rerun to main" ; return 0}
timeout {fail "(timeout) rerun to main" ; return 0}
}
} else {
send_gdb "run\n"
gdb_expect {
-re "The program .* has been started already.*y or n. $" {
send_gdb "y\n"
exp_continue
}
-re "Starting program.*$gdb_prompt $"\
{pass "rerun to main" ; return 0}
-re "$gdb_prompt $"\
{fail "rerun to main" ; return 0}
timeout {fail "(timeout) rerun to main" ; return 0}
}
}
}
# Print a message and return true if a test should be skipped
# due to lack of floating point suport.
proc gdb_skip_float_test { msg } {
if [target_info exists gdb,skip_float_tests] {
verbose "Skipping test '$msg': no float tests.";
return 1;
}
return 0;
}
# Print a message and return true if a test should be skipped
# due to lack of stdio support.
proc gdb_skip_stdio_test { msg } {
if [target_info exists gdb,noinferiorio] {
verbose "Skipping test '$msg': no inferior i/o.";
return 1;
}
return 0;
}
proc gdb_skip_bogus_test { msg } {
return 0;
}
# Note: the procedure gdb_gnu_strip_debug will produce an executable called
# ${binfile}.dbglnk, which is just like the executable ($binfile) but without
# the debuginfo. Instead $binfile has a .gnu_debuglink section which contains
# the name of a idebuginfo only file. This file will be stored in the
# gdb.base/.debug subdirectory.
# Functions for separate debug info testing
# starting with an executable:
# foo --> original executable
# at the end of the process we have:
# foo.stripped --> foo w/o debug info
# .debug/foo.debug --> foo's debug info
# foo --> like foo, but with a new .gnu_debuglink section pointing to foo.debug.
# Return the name of the file in which we should stor EXEC's separated
# debug info. EXEC contains the full path.
proc separate_debug_filename { exec } {
# In a .debug subdirectory off the same directory where the testcase
# executable is going to be. Something like:
# <your-path>/gdb/testsuite/gdb.base/.debug/blah.debug.
# This is the default location where gdb expects to findi
# the debug info file.
set exec_dir [file dirname $exec]
set exec_file [file tail $exec]
set debug_dir [file join $exec_dir ".debug"]
set debug_file [file join $debug_dir "${exec_file}.debug"]
return $debug_file
}
proc gdb_gnu_strip_debug { dest } {
set debug_file [separate_debug_filename $dest]
set strip_to_file_program strip
set objcopy_program objcopy
# Make sure the directory that will hold the separated debug
# info actually exists.
set debug_dir [file dirname $debug_file]
if {! [file isdirectory $debug_dir]} {
file mkdir $debug_dir
}
set debug_link [file tail $debug_file]
set stripped_file "${dest}.stripped"
# Get rid of the debug info, and store result in stripped_file
# something like gdb/testsuite/gdb.base/blah.stripped.
set result [catch "exec $strip_to_file_program --strip-debug ${dest} -o ${stripped_file}" output]
verbose "result is $result"
verbose "output is $output"
if {$result == 1} {
return 1
}
# Get rid of everything but the debug info, and store result in debug_file
# This will be in the .debug subdirectory, see above.
set result [catch "exec $strip_to_file_program --only-keep-debug ${dest} -o ${debug_file}" output]
verbose "result is $result"
verbose "output is $output"
if {$result == 1} {
return 1
}
# Link the two previous output files together, adding the .gnu_debuglink
# section to the stripped_file, containing a pointer to the debug_file,
# save the new file in dest.
# This will be the regular executable filename, in the usual location.
set result [catch "exec $objcopy_program --add-gnu-debuglink=${debug_file} ${stripped_file} ${dest}" output]
verbose "result is $result"
verbose "output is $output"
if {$result == 1} {
return 1
}
return 0
}
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