1# Copyright 2010-2016 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# In some cases gdbserver cannot find the DT_DEBUG library list on its own and 17# it needs to fall back to GDB solib-svr4.c look up via symbols from the main 18# executable. 19# gdbserver :1234 ld-linux-x86-64.so.2 /bin/prog 20# gdb /bin/prog 21# (gdb) target remote ... 22 23load_lib gdbserver-support.exp 24load_lib prelink-support.exp 25 26if {[skip_gdbserver_tests] || [skip_shlib_tests]} { 27 return 28} 29 30standard_testfile solib-list-main.c 31set srclibfile ${testfile}-lib.c 32set binlibfile [standard_output_file ${testfile}.so] 33 34if { [get_compiler_info] 35 || [gdb_compile_shlib "${srcdir}/${subdir}/${srclibfile}" "${binlibfile}" {debug}] != "" 36 || [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable "shlib=${binlibfile}"] != "" } { 37 untested "could not compile sources" 38 return -1 39} 40 41set interp_system [section_get ${binfile} .interp] 42verbose -log "system interpreter is: $interp_system" 43 44foreach nonstop { 0 1 } { with_test_prefix "non-stop $nonstop" { 45 46 # clean_restart assumes ${objdir}/${subdir}/ which is not applicable 47 # for ${interp_system}. 48 gdb_exit 49 gdb_start 50 gdb_reinitialize_dir $srcdir/$subdir 51 gdb_load_shlib ${binlibfile} 52 53 set remote_binfile [gdb_remote_download target $binfile] 54 55 # When testing remote, the file path we receive may be only the file name, 56 # "solib-list". ld-linux doesn't seem to be able to find the file when 57 # passing just the file name, it wants either the absolute path or a 58 # relative path with at least one directory component. Calling readlink on 59 # the target to get the full path will make it happy. 60 set remote_binfile [lindex [remote_exec target "readlink -f $remote_binfile"] 1] 61 62 # Make sure we're disconnected, in case we're testing with an 63 # extended-remote board, therefore already connected. 64 gdb_test "disconnect" ".*" 65 66 gdb_test "set non-stop $nonstop" 67 68 # It is required for the non-stop mode, GDB would try to step over 69 # _dl_debug_state breakpoint will still only ld.so loaded in gdbserver. 70 # But GDB having symbols from the main executable it would try to use 71 # displaced-stepping buffer at unmapped that time address _start. 72 gdb_test "set displaced-stepping off" 73 74 # Unset last_loaded_file because we want GDBserver spawn 75 # ${interp_system} not ${last_loaded_file}. 76 global last_loaded_file 77 unset -nocomplain last_loaded_file 78 79 # Note we pass ${interp_system}, the program gdbserver spawns, as 80 # argument here, instead of using gdb_load, because we don't want 81 # to download the interpreter to the target (it's already there) 82 # or to the test output directory. 83 set res [gdbserver_spawn "${interp_system} ${remote_binfile}"] 84 set gdbserver_protocol [lindex $res 0] 85 set gdbserver_gdbport [lindex $res 1] 86 87 # Load BINFILE after gdbserver_spawn (so that gdbserver executes ld.so) 88 # but before "target remote" below so that qSymbol data get already 89 # initialized from BINFILE (and not from ld.so first needing a change to 90 # BINFILE later). 91 gdb_test "file ${binfile}" {Reading symbols from .*\.\.\.done\..*} "file binfile" \ 92 {(Are you sure you want to change the file|Load new symbol table from ".*")\? \(y or n\) } "y" 93 94 set test "target $gdbserver_protocol" 95 gdb_test_multiple "target $gdbserver_protocol $gdbserver_gdbport" $test { 96 -re "Remote debugging using .*\r\n$gdb_prompt " { 97 # Do not anchor end, there may be more output in non-stop mode. 98 pass $test 99 } 100 } 101 102 gdb_test "continue" "Program received signal SIGUSR1, .*" 103 gdb_test "sharedlibrary" ".*" 104 gdb_test "p libvar" " = 23" 105}} 106