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# Copyright 2012-2020 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/>. */
if {[skip_shlib_tests]} {
return -1
}
proc test {hidden dlopen version_id_main lang} {
global srcdir subdir
set main "print-file-var-main"
set suffix "-hidden$hidden-dlopen$dlopen-version_id_main$version_id_main"
# Normally we place different builds (C/C++) of a test into
# subdirectories within the test build directory, however, using
# gdb_load_shlib doesn't work well with this approach, so instead
# add a language specific suffix to the binary and library names.
if { $lang == "c" } {
set suffix "${suffix}_c"
} else {
set suffix "${suffix}_cpp"
}
set executable $main$suffix
set lib1 "print-file-var-lib1"
set lib2 "print-file-var-lib2"
set libobj1 [standard_output_file ${lib1}$suffix.so]
set libobj2 [standard_output_file ${lib2}$suffix.so]
set lib_opts { debug additional_flags=-fPIC $lang }
lappend lib_opts "additional_flags=-DHIDDEN=$hidden"
if { [gdb_compile_shlib ${srcdir}/${subdir}/${lib1}.c \
${libobj1} \
${lib_opts} ] != "" } {
return -1
}
if { [gdb_compile_shlib ${srcdir}/${subdir}/${lib2}.c \
${libobj2} \
${lib_opts} ] != "" } {
return -1
}
set main_opts [list debug shlib=${libobj1} $lang]
if {$dlopen} {
lappend main_opts "shlib_load" \
"additional_flags=-DSHLIB_NAME=\"$libobj2\""
} else {
lappend main_opts "shlib=${libobj2}"
}
lappend main_opts "additional_flags=-DVERSION_ID_MAIN=$version_id_main"
if { [gdb_compile "${srcdir}/${subdir}/${main}.c" \
[standard_output_file ${executable}] \
executable \
$main_opts]
!= ""} {
return -1
}
clean_restart $executable
gdb_load_shlib $libobj1
gdb_load_shlib $libobj2
if ![runto_main] {
untested "could not run to main"
return -1
}
# Try printing "this_version_num" qualified with the name of the file
# where the variables are defined. There are three global variables
# with that name, and some systems such as GNU/Linux merge them
# into one single entity, while some other systems such as Windows
# keep them separate. In the first situation, we have to verify
# that GDB does not randomly select the wrong instance, even when
# a specific filename is used to qualified the lookup. And in the
# second case, we have to verify that GDB does select the instance
# defined in the given filename.
#
# To avoid adding target-specific code in this testcase, the program
# sets three local variables named 'vm', 'v1' and 'v2' with the value of
# our global variables. This allows us to compare the value that
# GDB returns for each query against the actual value seen by
# the program itself.
# Get past the initialization of the v* variables.
set bp_location \
[gdb_get_line_number "STOP" "${main}.c"]
gdb_test "break $main.c:$bp_location" \
"Breakpoint \[0-9\]+ at 0x\[0-9a-fA-F\]+: .*" \
"breakpoint at STOP marker"
gdb_test "continue" \
"Breakpoint \[0-9\]+, main \\(\\) at.*STOP.*" \
"continue to STOP marker"
# Now check the value of this_version_id in all of
# print-file-var-main.c, print-file-var-lib1.c and
# print-file-var-lib2.c.
# Compare the values of $sym1 and $sym2.
proc compare {sym1 sym2} {
with_test_prefix "sym1=$sym1,sym2=$sym2" {
# Done this way instead of comparing the symbols with "print $sym1
# == sym2" in GDB directly so that the values of the symbols end
# up visible in the logs, for debug purposes.
set vsym1 [get_integer_valueof $sym1 -1]
set vsym2 [get_integer_valueof $sym2 -1]
gdb_assert {$vsym1 == $vsym2} "$sym1 == $sym2"
}
}
if $version_id_main {
compare "'print-file-var-main.c'::this_version_id" "vm"
compare "this_version_id" "vm"
}
compare "'print-file-var-lib1.c'::this_version_id" "v1"
compare "'print-file-var-lib2.c'::this_version_id" "v2"
}
# Only test C++ if we are able. Always use C.
if { [skip_cplus_tests] || [get_compiler_info "c++"] } {
set lang_list {c}
} else {
set lang_list {c c++}
}
foreach_with_prefix lang $lang_list {
foreach_with_prefix hidden {0 1} {
foreach_with_prefix dlopen {0 1} {
foreach_with_prefix version_id_main {0 1} {
test $hidden $dlopen $version_id_main $lang
}
}
}
}
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