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# Test `info auxv' and related functionality.
# Copyright (C) 1992-2021 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 3 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, see <http://www.gnu.org/licenses/>.
# This file is based on corefile.exp which was written by Fred
# Fish. (fnf@cygnus.com)
if { ! [istarget "*-*-linux*"] && ! [istarget "*-*-solaris*"] } {
verbose "Skipping auxv.exp because of lack of support."
return
}
standard_testfile .c
set corefile ${binfile}.corefile
set gcorefile ${binfile}.gcore
if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable \
{debug additional_flags=-DUSE_RLIMIT}] != ""
&& [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable \
{debug}] != "" } {
untested "failed to compile"
return -1
}
# Use a fresh directory to confine the native core dumps.
# Make it the working directory for the inferior.
set coredir [standard_output_file coredir.[getpid]]
file mkdir $coredir
set core_works [expr [isnative] && ! [is_remote target]]
# Run GDB on the test program up to where it will dump core.
clean_restart ${binfile}
gdb_test_no_output "set print sevenbit-strings"
gdb_test_no_output "set width 0"
if {$core_works} {
if {[gdb_test_no_output "set cwd $coredir" \
"set cwd to temporary directory for core dumps"]} {
set core_works 0
}
}
if ![runto_main] then {
fail "can't run to main"
return 0
}
set print_core_line [gdb_get_line_number "ABORT;"]
gdb_test "tbreak $print_core_line"
gdb_test continue ".*ABORT;.*"
proc fetch_auxv {test} {
global gdb_prompt
set auxv_lines {}
set bad -1
# Former trailing `\[\r\n\]+' may eat just \r leaving \n in the buffer
# corrupting the next matches.
if {[gdb_test_multiple "info auxv" $test {
-re "info auxv\r\n" {
exp_continue
}
-ex "The program has no auxiliary information now" {
set bad 1
exp_continue
}
-ex "Auxiliary vector is empty" {
set bad 1
exp_continue
}
-ex "No auxiliary vector found" {
set bad 1
exp_continue
}
-re "^\[0-9\]+\[ \t\]+(AT_\[^ \t\]+)\[^\r\n\]+\r\n" {
lappend auxv_lines $expect_out(0,string)
exp_continue
}
-re "^\[0-9\]+\[ \t\]+\\?\\?\\?\[^\r\n\]+\r\n" {
warning "Unrecognized tag value: $expect_out(0,string)"
set bad 1
lappend auxv_lines $expect_out(0,string)
exp_continue
}
-re "$gdb_prompt $" {
incr bad
}
-re "^\[^\r\n\]+\r\n" {
if {!$bad} {
warning "Unrecognized output: $expect_out(0,string)"
set bad 1
}
exp_continue
}
}] != 0} {
return {}
}
if {$bad} {
fail $test
return {}
}
pass $test
return $auxv_lines
}
set live_data [fetch_auxv "info auxv on live process"]
# Now try gcore.
set gcore_works [gdb_gcore_cmd "$gcorefile" "gcore"]
# Let the program continue and die.
gdb_test continue ".*Program received signal.*" "continue until signal"
gdb_test continue ".*Program terminated with signal.*" "continue and terminate"
# Now collect the core dump it left.
set test "generate native core dump"
if {$core_works} {
# Find the
set names [glob -nocomplain -directory $coredir *core*]
if {[llength $names] == 1} {
set file [file join $coredir [lindex $names 0]]
remote_exec build "mv $file $corefile"
pass $test
} else {
set core_works 0
warning "can't generate a core file - core tests suppressed - check ulimit -c"
unsupported $test
}
} else {
unsupported $test
}
remote_exec build "rm -rf $coredir"
# Now we can examine the core files and check that their data matches what
# we saw in the process. Note that the exact data can vary between runs,
# so it's important that the native core dump file and the gcore-created dump
# both be from the same run of the program as we examined live.
proc do_core_test {works corefile test1 test2} {
if {! $works} {
unsupported $test1
unsupported $test2
} else {
gdb_test "core $corefile" "Core was generated by.*" \
"load core file for $test1" \
"A program is being debugged already.*" "y"
set core_data [fetch_auxv $test1]
global live_data
if {$core_data == $live_data} {
pass $test2
} else {
fail $test2
}
}
}
do_core_test $core_works $corefile \
"info auxv on native core dump" "matching auxv data from live and core"
do_core_test $gcore_works $gcorefile \
"info auxv on gcore-created dump" "matching auxv data from live and gcore"
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