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

   1 # Copyright 2009-2024 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 require allow_shlib_tests can_spawn_for_attach
  31
  32 # Library file.
  33 set libname "solib-overlap-lib"
  34 set srcfile_lib ${srcdir}/${subdir}/${libname}.c
  35 # Binary file.
  36 set testfile "solib-overlap-main"
  37 set srcfile ${srcdir}/${subdir}/${testfile}.c
  38
  39 # Base addresses for `prelink -r' which should be compatible with both -m32 and
  40 # -m64 targets.  If it clashes with system prelinked libraries it would give
  41 # false PASS.
  42 # Prelink first lib1 at 0x40000000 and lib2 at 0x41000000.
  43 # During second pass try lib1 at 0x50000000 and lib2 at 0x51000000.
  44 foreach prelink_lib1 {0x40000000 0x50000000} { with_test_prefix "$prelink_lib1" {
  45     set prelink_lib2 [format "0x%x" [expr $prelink_lib1 + 0x01000000]]
  46
  47     # Library file.
  48     set binfile_lib1 [standard_output_file ${libname}1-${prelink_lib1}.so]
  49     set binfile_lib1_test_msg OBJDIR/${subdir}/${libname}1-${prelink_lib1}.so
  50     set binfile_lib2 [standard_output_file ${libname}2-${prelink_lib1}.so]
  51     set binfile_lib2_test_msg OBJDIR/${subdir}/${libname}2-${prelink_lib1}.so
  52     set lib_flags {debug}
  53     # Binary file.
  54     set binfile_base ${testfile}-${prelink_lib1}
  55     set binfile [standard_output_file ${binfile_base}]
  56     set binfile_test_msg OBJDIR/${subdir}/${binfile_base}
  57     set bin_flags [list debug shlib=${binfile_lib1} shlib=${binfile_lib2}]
  58     set escapedbinfile  [string_to_regexp ${binfile}]
  59
  60     if { [gdb_compile_shlib ${srcfile_lib} ${binfile_lib1} $lib_flags] != ""
  61          || [gdb_compile_shlib ${srcfile_lib} ${binfile_lib2} $lib_flags] != ""
  62          || [gdb_compile ${srcfile} ${binfile} executable $bin_flags] != "" } {
  63         untested "failed to compile"
  64         return -1
  65     }
  66
  67     if {[catch "exec prelink -N -r ${prelink_lib1} ${binfile_lib1}" output] != 0
  68         || [catch "exec prelink -N -r ${prelink_lib2} ${binfile_lib2}" output] != 0} {
  69         # Maybe we don't have prelink.
  70         verbose -log "prelink failed: $output"
  71         untested "could not prelink ${binfile_lib1_test_msg} or ${binfile_lib2_test_msg}."
  72         return -1
  73     }
  74
  75     set test_spawn_id [spawn_wait_for_attach $binfile]
  76     set testpid [spawn_id_get_pid $test_spawn_id]
  77
  78     remote_exec build "mv -f ${binfile_lib1} ${binfile_lib1}-running"
  79     remote_exec build "mv -f ${binfile_lib2} ${binfile_lib2}-running"
  80
  81     # Provide another exported function name to cause different sizes of sections.
  82     lappend lib_flags additional_flags=-DSYMB
  83
  84     if { [gdb_compile_shlib ${srcfile_lib} ${binfile_lib1} $lib_flags] != ""
  85          || [gdb_compile_shlib ${srcfile_lib} ${binfile_lib2} $lib_flags] != ""} {
  86         untested "failed to compile shared library"
  87         kill_wait_spawned_process $test_spawn_id
  88         return -1
  89     }
  90
  91     clean_restart ${binfile_base}
  92     # This testcase currently does not support remote targets.
  93     # gdb_load_shlib ${binfile_lib1}
  94     # gdb_load_shlib ${binfile_lib2}
  95
  96     # Here we should get:
  97     # warning: .dynamic section for ".../solib-overlap-lib1.so" is not at the expected address (wrong library or version mismatch?)
  98     # warning: .dynamic section for ".../solib-overlap-lib2.so" is not at the expected address (wrong library or version mismatch?)
  99
 100     set test attach
 101     gdb_test_multiple "attach $testpid" $test {
 102         -re "Attaching to program.*`?$escapedbinfile'?, process $testpid.*$gdb_prompt $" {
 103             pass $test
 104         }
 105         -re "Attaching to program.*`?$escapedbinfile\.exe'?, process $testpid.*\[Switching to thread $testpid\..*\].*$gdb_prompt $" {
 106             # Response expected on Cygwin
 107             pass $test
 108         }
 109     }
 110
 111     # Detach the process.
 112
 113     gdb_test "detach" "Detaching from program: .*$escapedbinfile, process $testpid\r\n\\\[Inferior $decimal \\(.*\\) detached\\\]"
 114
 115     # Wait a bit for gdb to finish detaching
 116
 117     sleep 5
 118
 119     kill_wait_spawned_process $test_spawn_id
 120 }}