1 # Copyright 2009-2023 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.
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.
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/>.
15 # Contributed by Jan Kratochvil <jan.kratochvil@redhat.com>.
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
25 # (wrong library or version mismatch?)
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.
30 if [skip_shlib_tests] {
34 if {![can_spawn_for_attach]} {
39 set libname "solib-overlap-lib"
40 set srcfile_lib ${srcdir}/${subdir}/${libname}.c
42 set testfile "solib-overlap-main"
43 set srcfile ${srcdir}/${subdir}/${testfile}.c
45 # Base addresses for `prelink -r' which should be compatible with both -m32 and
46 # -m64 targets. If it clashes with system prelinked libraries it would give
48 # Prelink first lib1 at 0x40000000 and lib2 at 0x41000000.
49 # During second pass try lib1 at 0x50000000 and lib2 at 0x51000000.
50 foreach prelink_lib1 {0x40000000 0x50000000} { with_test_prefix "$prelink_lib1" {
51 set prelink_lib2 [format "0x%x" [expr $prelink_lib1 + 0x01000000]]
54 set binfile_lib1 [standard_output_file ${libname}1-${prelink_lib1}.so]
55 set binfile_lib1_test_msg OBJDIR/${subdir}/${libname}1-${prelink_lib1}.so
56 set binfile_lib2 [standard_output_file ${libname}2-${prelink_lib1}.so]
57 set binfile_lib2_test_msg OBJDIR/${subdir}/${libname}2-${prelink_lib1}.so
60 set binfile_base ${testfile}-${prelink_lib1}
61 set binfile [standard_output_file ${binfile_base}]
62 set binfile_test_msg OBJDIR/${subdir}/${binfile_base}
63 set bin_flags [list debug shlib=${binfile_lib1} shlib=${binfile_lib2}]
64 set escapedbinfile [string_to_regexp ${binfile}]
66 if { [gdb_compile_shlib ${srcfile_lib} ${binfile_lib1} $lib_flags] != ""
67 || [gdb_compile_shlib ${srcfile_lib} ${binfile_lib2} $lib_flags] != ""
68 || [gdb_compile ${srcfile} ${binfile} executable $bin_flags] != "" } {
69 untested "failed to compile"
73 if {[catch "exec prelink -N -r ${prelink_lib1} ${binfile_lib1}" output] != 0
74 || [catch "exec prelink -N -r ${prelink_lib2} ${binfile_lib2}" output] != 0} {
75 # Maybe we don't have prelink.
76 verbose -log "prelink failed: $output"
77 untested "could not prelink ${binfile_lib1_test_msg} or ${binfile_lib2_test_msg}."
81 set test_spawn_id [spawn_wait_for_attach $binfile]
82 set testpid [spawn_id_get_pid $test_spawn_id]
84 remote_exec build "mv -f ${binfile_lib1} ${binfile_lib1}-running"
85 remote_exec build "mv -f ${binfile_lib2} ${binfile_lib2}-running"
87 # Provide another exported function name to cause different sizes of sections.
88 lappend lib_flags additional_flags=-DSYMB
90 if { [gdb_compile_shlib ${srcfile_lib} ${binfile_lib1} $lib_flags] != ""
91 || [gdb_compile_shlib ${srcfile_lib} ${binfile_lib2} $lib_flags] != ""} {
92 untested "failed to compile shared library"
93 kill_wait_spawned_process $test_spawn_id
97 clean_restart ${binfile_base}
98 # This testcase currently does not support remote targets.
99 # gdb_load_shlib ${binfile_lib1}
100 # gdb_load_shlib ${binfile_lib2}
102 # Here we should get:
103 # warning: .dynamic section for ".../solib-overlap-lib1.so" is not at the expected address (wrong library or version mismatch?)
104 # warning: .dynamic section for ".../solib-overlap-lib2.so" is not at the expected address (wrong library or version mismatch?)
107 gdb_test_multiple "attach $testpid" $test {
108 -re "Attaching to program.*`?$escapedbinfile'?, process $testpid.*$gdb_prompt $" {
111 -re "Attaching to program.*`?$escapedbinfile\.exe'?, process $testpid.*\[Switching to thread $testpid\..*\].*$gdb_prompt $" {
112 # Response expected on Cygwin
117 # Detach the process.
119 gdb_test "detach" "Detaching from program: .*$escapedbinfile, process $testpid\r\n\\\[Inferior $decimal \\(.*\\) detached\\\]"
121 # Wait a bit for gdb to finish detaching
125 kill_wait_spawned_process $test_spawn_id