gdb/testsuite/gdb.server/solib-list.exp

   1 # Copyright 2010-2018 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
  23 load_lib gdbserver-support.exp
  24 load_lib prelink-support.exp
  25
  26 if {[skip_gdbserver_tests] || [skip_shlib_tests]} {
  27     return
  28 }
  29
  30 standard_testfile solib-list-main.c
  31 set srclibfile ${testfile}-lib.c
  32 set binlibfile [standard_output_file ${testfile}.so]
  33
  34 if { [get_compiler_info]
  35      || [gdb_compile_shlib "${srcdir}/${subdir}/${srclibfile}" "${binlibfile}" {debug}] != ""
  36      || [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable "shlib=${binlibfile}"] != "" } {
  37     untested "failed to compile"
  38     return -1
  39 }
  40
  41 set interp_system [section_get ${binfile} .interp]
  42 verbose -log "system interpreter is: $interp_system"
  43
  44 foreach 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 }}