gdb/testsuite/gdb.base/solib-overlap.exp

   1 # Copyright 2009-2019 Free Software Foundation, Inc.
   2 # This program is free software; you can redistribute it and/or modify
   3 # it under the terms of the GNU General Public License as published by
   4 # the Free Software Foundation; either version 3 of the License, or
   5 # (at your option) any later version.
   6 #
   7 # This program is distributed in the hope that it will be useful,
   8 # but WITHOUT ANY WARRANTY; without even the implied warranty of
   9 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10 # GNU General Public License for more details.
  11 #
  12 # You should have received a copy of the GNU General Public License
  13 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  14 #
  15 # Contributed by Jan Kratochvil <jan.kratochvil@redhat.com>.
  16
  17 # Test GDB can cope with two libraries loaded with overlapping VMA ranges.
  18 # Prelink libraries first so they can be loaded and their native address.
  19 # In such case `struct linkmap'.l_addr will be zero.  Provide different
  20 # unprelinked library files on the disk which have zero-based VMAs.  These
  21 # different files should have their .dynamic section at a different offset in
  22 # page size so that we get for
  23 #   warning: .dynamic section for "..." is not at the expected address
  24 # the reason
  25 #   (wrong library or version mismatch?)
  26 # and not:
  27 #   difference appears to be caused by prelink, adjusting expectations
  28 # In such case both disk libraries will be loaded at VMAs starting at zero.
  29
  30 if [skip_shlib_tests] {
  31     return 0
  32 }
  33
  34 if {![can_spawn_for_attach]} {
  35     return 0
  36 }
  37
  38 if [get_compiler_info] {
  39     return -1
  40 }
  41
  42 # Library file.
  43 set libname "solib-overlap-lib"
  44 set srcfile_lib ${srcdir}/${subdir}/${libname}.c
  45 # Binary file.
  46 set testfile "solib-overlap-main"
  47 set srcfile ${srcdir}/${subdir}/${testfile}.c
  48
  49 # Base addresses for `prelink -r' which should be compatible with both -m32 and
  50 # -m64 targets.  If it clashes with system prelinked libraries it would give
  51 # false PASS.
  52 # Prelink first lib1 at 0x40000000 and lib2 at 0x41000000.
  53 # During second pass try lib1 at 0x50000000 and lib2 at 0x51000000.
  54 foreach prelink_lib1 {0x40000000 0x50000000} { with_test_prefix "$prelink_lib1" {
  55     set prelink_lib2 [format "0x%x" [expr $prelink_lib1 + 0x01000000]]
  56
  57     # Library file.
  58     set binfile_lib1 [standard_output_file ${libname}1-${prelink_lib1}.so]
  59     set binfile_lib1_test_msg OBJDIR/${subdir}/${libname}1-${prelink_lib1}.so
  60     set binfile_lib2 [standard_output_file ${libname}2-${prelink_lib1}.so]
  61     set binfile_lib2_test_msg OBJDIR/${subdir}/${libname}2-${prelink_lib1}.so
  62     set lib_flags {debug}
  63     # Binary file.
  64     set binfile_base ${testfile}-${prelink_lib1}
  65     set binfile [standard_output_file ${binfile_base}]
  66     set binfile_test_msg OBJDIR/${subdir}/${binfile_base}
  67     set bin_flags [list debug shlib=${binfile_lib1} shlib=${binfile_lib2}]
  68     set escapedbinfile  [string_to_regexp ${binfile}]
  69
  70     if { [gdb_compile_shlib ${srcfile_lib} ${binfile_lib1} $lib_flags] != ""
  71          || [gdb_compile_shlib ${srcfile_lib} ${binfile_lib2} $lib_flags] != ""
  72          || [gdb_compile ${srcfile} ${binfile} executable $bin_flags] != "" } {
  73         untested "failed to compile"
  74         return -1
  75     }
  76
  77     if {[catch "system \"prelink -N -r ${prelink_lib1} ${binfile_lib1}\""] != 0
  78         || [catch "system \"prelink -N -r ${prelink_lib2} ${binfile_lib2}\""] != 0} {
  79         # Maybe we don't have prelink.
  80         untested "could not prelink ${binfile_lib1_test_msg} or ${binfile_lib2_test_msg}."
  81         return -1
  82     }
  83
  84     set test_spawn_id [spawn_wait_for_attach $binfile]
  85     set testpid [spawn_id_get_pid $test_spawn_id]
  86
  87     remote_exec build "mv -f ${binfile_lib1} ${binfile_lib1}-running"
  88     remote_exec build "mv -f ${binfile_lib2} ${binfile_lib2}-running"
  89
  90     # Provide another exported function name to cause different sizes of sections.
  91     lappend lib_flags additional_flags=-DSYMB
  92
  93     if { [gdb_compile_shlib ${srcfile_lib} ${binfile_lib1} $lib_flags] != ""
  94          || [gdb_compile_shlib ${srcfile_lib} ${binfile_lib2} $lib_flags] != ""} {
  95         untested "failed to compile shared library"
  96         kill_wait_spawned_process $test_spawn_id
  97         return -1
  98     }
  99
 100     clean_restart ${binfile_base}
 101     # This testcase currently does not support remote targets.
 102     # gdb_load_shlib ${binfile_lib1}
 103     # gdb_load_shlib ${binfile_lib2}
 104
 105     # Here we should get:
 106     # warning: .dynamic section for ".../solib-overlap-lib1.so" is not at the expected address (wrong library or version mismatch?)
 107     # warning: .dynamic section for ".../solib-overlap-lib2.so" is not at the expected address (wrong library or version mismatch?)
 108
 109     set test attach
 110     gdb_test_multiple "attach $testpid" $test {
 111         -re "Attaching to program.*`?$escapedbinfile'?, process $testpid.*$gdb_prompt $" {
 112             pass $test
 113         }
 114         -re "Attaching to program.*`?$escapedbinfile\.exe'?, process $testpid.*\[Switching to thread $testpid\..*\].*$gdb_prompt $" {
 115             # Response expected on Cygwin
 116             pass $test
 117         }
 118     }
 119
 120     # Detach the process.
 121
 122     gdb_test "detach" "Detaching from program: .*$escapedbinfile, process $testpid\r\n\\\[Inferior $decimal \\(.*\\) detached\\\]"
 123
 124     # Wait a bit for gdb to finish detaching
 125
 126     sleep 5
 127
 128     kill_wait_spawned_process $test_spawn_id
 129 }}