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# Copyright 2018-2023 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/>.
# This file is part of the gdb testsuite
# The types we're going to test.
set typelist {
char {unsigned char}
short {unsigned short}
int {unsigned int}
long {unsigned long}
{long long} {unsigned long long}
float
double {long double}
}
if {[has_int128_c]} {
# Note we don't check "unsigned __int128" yet because at least gcc
# canonicalizes the name to "__int128 unsigned", and there isn't a
# c-exp.y production for this.
# https://sourceware.org/bugzilla/show_bug.cgi?id=20991
lappend typelist __int128
}
# Build source file for testing alignment handling of language LANG.
# Returns the name of the newly created source file.
proc prepare_test_source_file { lang } {
global typelist
# Create the test file.
if { $lang == "c++" } {
set suffix "cpp"
set align_func "alignof"
} else {
set suffix "c"
set align_func "_Alignof"
}
set filename [standard_output_file "align.$suffix"]
set outfile [open $filename w]
# Prologue.
puts -nonewline $outfile "#define DEF(T,U) struct align_pair_ ## T ## _x_ ## U "
puts $outfile "{ T one; U two; }"
if { $lang == "c++" } {
puts -nonewline $outfile "#define DEF_WITH_1_STATIC(T,U) struct align_pair_static_ ## T ## _x_ ## U "
puts $outfile "{ static T one; U two; }"
puts -nonewline $outfile "#define DEF_WITH_2_STATIC(T,U) struct align_pair_static_ ## T ## _x_static_ ## U "
puts $outfile "{ static T one; static U two; }"
}
if { $lang == "c" } {
puts $outfile "unsigned a_void = ${align_func} (void);"
}
# First emit single items.
foreach type $typelist {
set utype [join [split $type] _]
if {$type != $utype} {
puts $outfile "typedef $type $utype;"
}
puts $outfile "$type item_$utype;"
if { $lang == "c" } {
puts $outfile "unsigned a_$utype\n = ${align_func} ($type);"
}
set utype [join [split $type] _]
}
# Now emit all pairs.
foreach type $typelist {
set utype [join [split $type] _]
foreach inner $typelist {
set uinner [join [split $inner] _]
puts $outfile "DEF ($utype, $uinner);"
set joined "${utype}_x_${uinner}"
puts $outfile "struct align_pair_$joined item_${joined};"
puts $outfile "unsigned a_${joined}"
puts $outfile " = ${align_func} (struct align_pair_${joined});"
if { $lang == "c++" } {
puts $outfile "DEF_WITH_1_STATIC ($utype, $uinner);"
set joined "static_${utype}_x_${uinner}"
puts $outfile "struct align_pair_$joined item_${joined};"
puts $outfile "unsigned a_${joined}"
puts $outfile " = ${align_func} (struct align_pair_${joined});"
puts $outfile "DEF_WITH_2_STATIC ($utype, $uinner);"
set joined "static_${utype}_x_static_${uinner}"
puts $outfile "struct align_pair_$joined item_${joined};"
puts $outfile "unsigned a_${joined}"
puts $outfile " = ${align_func} (struct align_pair_${joined});"
}
}
}
# Epilogue.
puts $outfile {
int main() {
return 0;
}
}
close $outfile
return $filename
}
# Run the alignment test for the language LANG.
proc run_alignment_test { lang } {
global testfile srcfile typelist
global subdir
set filename [prepare_test_source_file $lang]
set flags {debug}
if { "$lang" == "c++" } {
lappend flags "additional_flags=-std=c++11"
}
standard_testfile $filename
if {[prepare_for_testing "failed to prepare" "$testfile" $srcfile $flags]} {
return -1
}
if {![runto_main]} {
perror "test suppressed"
return
}
if { $lang == "c++" } {
set align_func "alignof"
} else {
set align_func "_Alignof"
}
foreach type $typelist {
set utype [join [split $type] _]
if { $lang == "c" } {
set expected [get_integer_valueof a_$utype 0]
gdb_test "print ${align_func}($type)" " = $expected"
}
foreach inner $typelist {
set uinner [join [split $inner] _]
set expected [get_integer_valueof a_${utype}_x_${uinner} 0]
gdb_test "print ${align_func}(struct align_pair_${utype}_x_${uinner})" \
" = $expected"
if { $lang == "c++" } {
set expected [get_integer_valueof a_static_${utype}_x_${uinner} 0]
gdb_test "print ${align_func}(struct align_pair_static_${utype}_x_${uinner})" \
" = $expected"
set expected [get_integer_valueof a_static_${utype}_x_static_${uinner} 0]
gdb_test "print ${align_func}(struct align_pair_static_${utype}_x_static_${uinner})" \
" = $expected"
}
}
}
if { $lang == "c" } {
set expected [get_integer_valueof a_void 0]
gdb_test "print ${align_func}(void)" " = $expected"
}
}
run_alignment_test $lang
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