1# Copyright 2009, 2010, 2011 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 30if [skip_shlib_tests] { 31 return 0 32} 33 34# Are we on a target board? It is required for attaching to a process. 35if [is_remote target] { 36 return 0 37} 38 39if [get_compiler_info binfile-unused] { 40 return -1; 41} 42 43# Library file. 44set libname "solib-overlap-lib" 45set srcfile_lib ${srcdir}/${subdir}/${libname}.c 46# Binary file. 47set testfile "solib-overlap-main" 48set srcfile ${srcdir}/${subdir}/${testfile}.c 49 50# Base addresses for `prelink -r' which should be compatible with both -m32 and 51# -m64 targets. If it clashes with system prelinked libraries it would give 52# false PASS. 53# Prelink first lib1 at 0x40000000 and lib2 at 0x41000000. 54# During second pass try lib1 at 0x50000000 and lib2 at 0x51000000. 55foreach prelink_lib1 {0x40000000 0x50000000} { 56 set prelink_lib2 [format "0x%x" [expr $prelink_lib1 + 0x01000000]] 57 58 set old_prefix $pf_prefix 59 lappend pf_prefix "$prelink_lib1:" 60 61 # Library file. 62 set binfile_lib1 ${objdir}/${subdir}/${libname}1-${prelink_lib1}.so 63 set binfile_lib1_test_msg OBJDIR/${subdir}/${libname}1-${prelink_lib1}.so 64 set binfile_lib2 ${objdir}/${subdir}/${libname}2-${prelink_lib1}.so 65 set binfile_lib2_test_msg OBJDIR/${subdir}/${libname}2-${prelink_lib1}.so 66 set lib_flags {debug} 67 # Binary file. 68 set binfile_base ${testfile}-${prelink_lib1} 69 set binfile ${objdir}/${subdir}/${binfile_base} 70 set binfile_test_msg OBJDIR/${subdir}/${binfile_base} 71 set bin_flags [list debug shlib=${binfile_lib1} shlib=${binfile_lib2}] 72 set escapedbinfile [string_to_regexp ${binfile}] 73 74 if { [gdb_compile_shlib ${srcfile_lib} ${binfile_lib1} $lib_flags] != "" 75 || [gdb_compile_shlib ${srcfile_lib} ${binfile_lib2} $lib_flags] != "" 76 || [gdb_compile ${srcfile} ${binfile} executable $bin_flags] != "" } { 77 untested "Could not compile ${binfile_lib1_test_msg}, ${binfile_lib2_test_msg} or ${binfile_test_msg}." 78 return -1 79 } 80 81 if {[catch "system \"prelink -N -r ${prelink_lib1} ${binfile_lib1}\""] != 0 82 || [catch "system \"prelink -N -r ${prelink_lib2} ${binfile_lib2}\""] != 0} { 83 # Maybe we don't have prelink. 84 untested "Could not prelink ${binfile_lib1_test_msg} or ${binfile_lib2_test_msg}." 85 return -1 86 } 87 88 # Start the program running and then wait for a bit, to be sure 89 # that it can be attached to. 90 91 set testpid [eval exec $binfile &] 92 sleep 2 93 if { [istarget "*-*-cygwin*"] } { 94 # testpid is the Cygwin PID, GDB uses the Windows PID, which might be 95 # different due to the way fork/exec works. 96 set testpid [ exec ps -e | gawk "{ if (\$1 == $testpid) print \$4; }" ] 97 } 98 99 remote_exec build "mv -f ${binfile_lib1} ${binfile_lib1}-running" 100 remote_exec build "mv -f ${binfile_lib2} ${binfile_lib2}-running" 101 102 # Provide another exported function name to cause different sizes of sections. 103 lappend lib_flags additional_flags=-DSYMB 104 105 if { [gdb_compile_shlib ${srcfile_lib} ${binfile_lib1} $lib_flags] != "" 106 || [gdb_compile_shlib ${srcfile_lib} ${binfile_lib2} $lib_flags] != ""} { 107 untested "Could not recompile ${binfile_lib1_test_msg} or ${binfile_lib2_test_msg}." 108 remote_exec build "kill -9 ${testpid}" 109 return -1 110 } 111 112 clean_restart ${binfile_base} 113 # This testcase currently does not support remote targets. 114 # gdb_load_shlibs ${binfile_lib1} ${binfile_lib2} 115 116 # Here we should get: 117 # warning: .dynamic section for ".../solib-overlap-lib1.so" is not at the expected address (wrong library or version mismatch?) 118 # warning: .dynamic section for ".../solib-overlap-lib2.so" is not at the expected address (wrong library or version mismatch?) 119 120 set test attach 121 gdb_test_multiple "attach $testpid" $test { 122 -re "Attaching to program.*`?$escapedbinfile'?, process $testpid.*$gdb_prompt $" { 123 pass $test 124 } 125 -re "Attaching to program.*`?$escapedbinfile\.exe'?, process $testpid.*\[Switching to thread $testpid\..*\].*$gdb_prompt $" { 126 # Response expected on Cygwin 127 pass $test 128 } 129 } 130 131 # Detach the process. 132 133 gdb_test "detach" "Detaching from program: .*$escapedbinfile, process $testpid" 134 135 # Wait a bit for gdb to finish detaching 136 137 sleep 5 138 139 remote_exec build "kill -9 ${testpid}" 140 141 set pf_prefix $old_prefix 142} 143