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# Copyright 2010-2024 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/>. */
# In some cases gdbserver cannot find the DT_DEBUG library list on its own and
# it needs to fall back to GDB solib-svr4.c look up via symbols from the main
# executable.
# gdbserver :1234 ld-linux-x86-64.so.2 /bin/prog
# gdb /bin/prog
# (gdb) target remote ...
load_lib gdbserver-support.exp
load_lib prelink-support.exp
require allow_gdbserver_tests allow_shlib_tests
standard_testfile solib-list-main.c
set srclibfile ${testfile}-lib.c
set binlibfile [standard_output_file ${testfile}.so]
if { [gdb_compile_shlib "${srcdir}/${subdir}/${srclibfile}" "${binlibfile}" {debug}] != ""
|| [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable "shlib=${binlibfile} build-id"] != "" } {
untested "failed to compile"
return -1
}
set interp_system [section_get ${binfile} .interp]
verbose -log "system interpreter is: $interp_system"
foreach nonstop { 0 1 } { with_test_prefix "non-stop $nonstop" {
save_vars { GDBFLAGS } {
# If GDB and GDBserver are both running locally, set the sysroot to avoid
# reading files via the remote protocol.
if { ![is_remote host] && ![is_remote target] } {
set GDBFLAGS "$GDBFLAGS -ex \"set sysroot\""
}
clean_restart
}
gdb_load_shlib ${binlibfile}
set target_binfile [gdb_remote_download target $binfile]
set host_binfile [gdb_remote_download host $binfile]
# When testing remote, the file path we receive may be only the file name,
# "solib-list". ld-linux doesn't seem to be able to find the file when
# passing just the file name, it wants either the absolute path or a
# relative path with at least one directory component. Calling readlink on
# the target to get the full path will make it happy.
set target_binfile [lindex [remote_exec target "readlink -f $target_binfile"] 1]
# Make sure we're disconnected, in case we're testing with an
# extended-remote board, therefore already connected.
gdb_test "disconnect" ".*"
gdb_test "set non-stop $nonstop"
# It is required for the non-stop mode, GDB would try to step over
# _dl_debug_state breakpoint will still only ld.so loaded in gdbserver.
# But GDB having symbols from the main executable it would try to use
# displaced-stepping buffer at unmapped that time address _start.
gdb_test "set displaced-stepping off"
# Unset last_loaded_file because we want GDBserver spawn
# ${interp_system} not ${last_loaded_file}.
global last_loaded_file
unset -nocomplain last_loaded_file
# Note we pass ${interp_system}, the program gdbserver spawns, as
# argument here, instead of using gdb_load, because we don't want
# to download the interpreter to the target (it's already there)
# or to the test output directory.
set res [gdbserver_spawn "${interp_system} ${target_binfile}"]
set gdbserver_protocol [lindex $res 0]
set gdbserver_gdbport [lindex $res 1]
# Load BINFILE after gdbserver_spawn (so that gdbserver executes ld.so)
# but before "target remote" below so that qSymbol data get already
# initialized from BINFILE (and not from ld.so first needing a change to
# BINFILE later).
gdb_test "file ${host_binfile}" {Reading symbols from .*\.\.\..*} "file binfile"
set test "target $gdbserver_protocol"
set ok 0
set new_symbol_table 0
gdb_test_multiple "target $gdbserver_protocol $gdbserver_gdbport" $test {
-re "Remote debugging using" {
set ok 1
exp_continue
}
-re {.*Load new symbol table from ".*"\? \(y or n\) } {
set new_symbol_table 1
send_gdb "y\n" answer
exp_continue
}
-re ".*\r\n$gdb_prompt " {
# Do not anchor end, there may be more output in non-stop mode.
if ($ok) {
pass $test
} else {
fail $test
}
}
}
gdb_assert {$new_symbol_table == 1}
gdb_test "continue" "Program received signal SIGUSR1, .*"
gdb_test "sharedlibrary" ".*"
gdb_test "p libvar" " = 23"
}}
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