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# Copyright 2006-2019 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/>.
# Please email any bugs, comments, and/or additions to this file to:
# bug-gdb@gnu.org
# This file was written by Alexandre Oliva <aoliva@redhat.com>
if { ![isnative] || [is_remote host] || [skip_shlib_tests]} {
return
}
if [get_compiler_info] {
return -1
}
if {$gcc_compiled == 0} {
return -1
}
load_lib prelink-support.exp
set testfile "prelink"
set libsrcfile ${testfile}-lib.c
set libfile [standard_output_file ${testfile}.so]
# Use -soname so that the new library gets copied by build_executable_own_libs.
if { [gdb_compile_shlib "${srcdir}/${subdir}/${libsrcfile}" "${libfile}" [list debug "ldflags=-Wl,-soname,[file tail ${libfile}]"]] != ""} {
# If creating the shared library fails, maybe we don't have the right tools
return -1
}
set srcfile ${testfile}.c
set executable ${testfile}t
set binfile [standard_output_file ${executable}]
set prelink_args [build_executable_own_libs ${testfile}.exp $executable $srcfile [list debug "ldflags=-Wl,${libfile},-rpath,[file dirname ${libfile}]"]]
if {$prelink_args == ""} {
return -1
}
set test "split debug of executable"
if [gdb_gnu_strip_debug $binfile] {
fail $test
} else {
pass $test
}
if ![prelink_yes $prelink_args] {
# Maybe we don't have prelink.
return -1
}
set found 0
set coredir "[standard_output_file coredir.[getpid]]"
file mkdir $coredir
catch "system \"(cd ${coredir}; ulimit -c unlimited; ${binfile}; true) >/dev/null 2>&1\""
foreach i "${coredir}/core ${coredir}/core.coremaker.c ${binfile}.core" {
if [remote_file build exists $i] {
remote_exec build "mv $i [standard_output_file prelink.core]"
set found 1
}
}
# Check for "core.PID".
if { $found == 0 } {
set names [glob -nocomplain -directory $coredir core.*]
if {[llength $names] == 1} {
set corefile [file join $coredir [lindex $names 0]]
remote_exec build "mv $corefile [standard_output_file prelink.core]"
set found 1
}
}
# Try to clean up after ourselves.
remote_file build delete [file join $coredir coremmap.data]
remote_exec build "rmdir $coredir"
if { $found == 0 } {
warning "can't generate a core file - prelink tests suppressed - check ulimit -c"
return 0
}
# Relink $libfile to a different address.
if ![prelink_yes $prelink_args] {
return -1
}
# Start with a fresh gdb
clean_restart $executable
# Print the "adjusting expectations" message.
gdb_test_no_output "set verbose on"
gdb_test "core-file [standard_output_file prelink.core]" "Using PIC \\(Position Independent Code\\) prelink displacement 0x\[^0\]\[0-9a-f\]* for \[^\r\n\]*[file tail ${libfile}].*" "seen displacement message"
gdb_test "p &bssvar == bssvarp" " = 1" ".dynbss vs. .bss address shift"
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