--- /dev/null
+# Copyright 2009 Free Software Foundation, Inc.
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+# Contributed by Jan Kratochvil <jan.kratochvil@redhat.com>.
+
+# Test GDB can cope with two libraries loaded with overlapping VMA ranges.
+# Prelink libraries first so they can be loaded and their native address.
+# In such case `struct linkmap'.l_addr will be zero. Provide different
+# unprelinked library files on the disk which have zero-based VMAs. These
+# different files should have their .dynamic section at a different offset in
+# page size so that we get for
+# warning: .dynamic section for "..." is not at the expected address
+# the reason
+# (wrong library or version mismatch?)
+# and not:
+# difference appears to be caused by prelink, adjusting expectations
+# In such case both disk libraries will be loaded at VMAs starting at zero.
+
+if [skip_shlib_tests] {
+ return 0
+}
+
+# Are we on a target board? It is required for attaching to a process.
+if [is_remote target] {
+ return 0
+}
+
+if [get_compiler_info binfile-unused] {
+ return -1;
+}
+
+# Library file.
+set libname "solib-overlap-lib"
+set srcfile_lib ${srcdir}/${subdir}/${libname}.c
+# Binary file.
+set testfile "solib-overlap-main"
+set srcfile ${srcdir}/${subdir}/${testfile}.c
+
+# Base addresses for `prelink -r' which should be compatible with both -m32 and
+# -m64 targets. If it clashes with system prelinked libraries it would give
+# false PASS.
+# Prelink first lib1 at 0x40000000 and lib2 at 0x41000000.
+# During second pass try lib1 at 0x50000000 and lib2 at 0x51000000.
+foreach prelink_lib1 {0x40000000 0x50000000} {
+ set prelink_lib2 [format "0x%x" [expr $prelink_lib1 + 0x01000000]]
+
+ set old_prefix $pf_prefix
+ lappend pf_prefix "$prelink_lib1:"
+
+ # Library file.
+ set binfile_lib1 ${objdir}/${subdir}/${libname}1-${prelink_lib1}.so
+ set binfile_lib2 ${objdir}/${subdir}/${libname}2-${prelink_lib1}.so
+ set lib_flags {debug}
+ # Binary file.
+ set binfile_base ${testfile}-${prelink_lib1}
+ set binfile ${objdir}/${subdir}/${binfile_base}
+ set bin_flags [list debug shlib=${binfile_lib1} shlib=${binfile_lib2}]
+ set escapedbinfile [string_to_regexp ${binfile}]
+
+ if { [gdb_compile_shlib ${srcfile_lib} ${binfile_lib1} $lib_flags] != ""
+ || [gdb_compile_shlib ${srcfile_lib} ${binfile_lib2} $lib_flags] != ""
+ || [gdb_compile ${srcfile} ${binfile} executable $bin_flags] != "" } {
+ untested "Could not compile ${binfile_lib1}, ${binfile_lib2} or ${binfile}."
+ return -1
+ }
+
+ if {[catch "system \"prelink -N -r ${prelink_lib1} ${binfile_lib1}\""] != 0
+ || [catch "system \"prelink -N -r ${prelink_lib2} ${binfile_lib2}\""] != 0} {
+ # Maybe we don't have prelink.
+ untested "Could not prelink ${binfile_lib1} or ${binfile_lib2}."
+ return -1
+ }
+
+ # Start the program running and then wait for a bit, to be sure
+ # that it can be attached to.
+
+ set testpid [eval exec $binfile &]
+ sleep 2
+ if { [istarget "*-*-cygwin*"] } {
+ # testpid is the Cygwin PID, GDB uses the Windows PID, which might be
+ # different due to the way fork/exec works.
+ set testpid [ exec ps -e | gawk "{ if (\$1 == $testpid) print \$4; }" ]
+ }
+
+ remote_exec build "mv -f ${binfile_lib1} ${binfile_lib1}-running"
+ remote_exec build "mv -f ${binfile_lib2} ${binfile_lib2}-running"
+
+ # Provide another exported function name to cause different sizes of sections.
+ lappend lib_flags additional_flags=-DSYMB
+
+ if { [gdb_compile_shlib ${srcfile_lib} ${binfile_lib1} $lib_flags] != ""
+ || [gdb_compile_shlib ${srcfile_lib} ${binfile_lib2} $lib_flags] != ""} {
+ untested "Could not recompile ${binfile_lib1} or ${binfile_lib2}."
+ remote_exec build "kill -9 ${testpid}"
+ return -1
+ }
+
+ clean_restart ${binfile_base}
+ # This testcase currently does not support remote targets.
+ # gdb_load_shlibs ${binfile_lib1} ${binfile_lib2}
+
+ # Here we should get:
+ # warning: .dynamic section for ".../solib-overlap-lib1.so" is not at the expected address (wrong library or version mismatch?)
+ # warning: .dynamic section for ".../solib-overlap-lib2.so" is not at the expected address (wrong library or version mismatch?)
+
+ set test attach
+ gdb_test_multiple "attach $testpid" $test {
+ -re "Attaching to program.*`?$escapedbinfile'?, process $testpid.*$gdb_prompt $" {
+ pass $test
+ }
+ -re "Attaching to program.*`?$escapedbinfile\.exe'?, process $testpid.*\[Switching to thread $testpid\..*\].*$gdb_prompt $" {
+ # Response expected on Cygwin
+ pass $test
+ }
+ }
+
+ # Detach the process.
+
+ gdb_test "detach" "Detaching from program: .*$escapedbinfile, process $testpid"
+
+ # Wait a bit for gdb to finish detaching
+
+ sleep 5
+
+ remote_exec build "kill -9 ${testpid}"
+
+ set pf_prefix $old_prefix
+}
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