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# Copyright 2013-2020 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/>.
load_lib dwarf.exp
# This test can only be run on targets which support DWARF-2 and use gas.
if {![dwarf2_support]} {
return 0
}
# No remote host testing either.
if {[is_remote host]} {
return 0
}
# Lots of source files since we test a few cases and make new files
# for each.
# The tests are:
# ok - the main file refers to a dwz and the buildids match
# mismatch - the buildids do not match
# fallback - the buildids do not match but a match is found via buildid
standard_testfile main.c \
dwzbuildid-ok-base.S dwzbuildid-ok-sep.S \
dwzbuildid-mismatch-base.S dwzbuildid-mismatch-sep.S \
dwzbuildid-fallback-base.S dwzbuildid-fallback-sep.S \
dwzbuildid-fallback-ok.S
# Write some assembly that just has a .gnu_debugaltlink section.
proc write_just_debugaltlink {filename dwzname buildid} {
set asm_file [standard_output_file $filename]
Dwarf::assemble $asm_file {
upvar dwzname dwzname
upvar buildid buildid
gnu_debugaltlink $dwzname $buildid
# Only the DWARF reader checks .gnu_debugaltlink, so make sure
# there is a bit of DWARF in here.
cu {} {
compile_unit {{language @DW_LANG_C}} {
}
}
}
}
# Write some DWARF that also sets the buildid.
proc write_dwarf_file {filename buildid {value 99}} {
set asm_file [standard_output_file $filename]
Dwarf::assemble $asm_file {
declare_labels int_label int_label2
upvar buildid buildid
upvar value value
build_id $buildid
cu {} {
compile_unit {{language @DW_LANG_C}} {
int_label2: base_type {
{name int}
{byte_size 4 sdata}
{encoding @DW_ATE_signed}
}
constant {
{name the_int}
{type :$int_label2}
{const_value $value data1}
}
}
}
}
}
if { [gdb_compile ${srcdir}/${subdir}/${srcfile} ${binfile}1.o \
object {nodebug}] != "" } {
return -1
}
# The values don't really matter, just whether they are equal.
set ok_prefix 01
set ok_suffix 0203040506
set ok_suffix2 02030405ff
set ok_buildid ${ok_prefix}${ok_suffix}
set ok_buildid2 ${ok_prefix}${ok_suffix2}
set bad_buildid ffffffffffff
set debugdir [standard_output_file {}]
set basedir $debugdir/.build-id
file mkdir $basedir $basedir/$ok_prefix
# Test where the separate debuginfo's buildid matches.
write_just_debugaltlink $srcfile2 ${binfile}3.o $ok_buildid
write_dwarf_file $srcfile3 $ok_buildid
# Test where the separate debuginfo's buildid does not match.
write_just_debugaltlink $srcfile4 ${binfile}5.o $ok_buildid
write_dwarf_file $srcfile5 $bad_buildid
# Test where the separate debuginfo's buildid does not match, but then
# we find a match in the .build-id directory.
write_just_debugaltlink $srcfile6 ${binfile}7.o $ok_buildid2
# Use 77 as the value so that if we load the bad debuginfo, we will
# see the wrong result.
write_dwarf_file $srcfile7 $bad_buildid 77
write_dwarf_file $srcfile8 $ok_buildid2
# Compile everything.
for {set i 2} {$i <= 8} {incr i} {
if {[gdb_compile [standard_output_file [set srcfile$i]] \
${binfile}$i.o object nodebug] != ""} {
return -1
}
}
# Copy a file into the .build-id place for the "fallback" test.
file copy -force -- ${binfile}8.o $basedir/$ok_prefix/$ok_suffix2.debug
# Link the executables.
if {[gdb_compile [list ${binfile}1.o ${binfile}2.o] ${binfile}-ok \
executable {}] != ""} {
return -1
}
if {[gdb_compile [list ${binfile}1.o ${binfile}4.o] ${binfile}-mismatch \
executable {}] != ""} {
return -1
}
if {[gdb_compile [list ${binfile}1.o ${binfile}6.o] ${binfile}-fallback \
executable {}] != ""} {
return -1
}
foreach testname {ok mismatch fallback} {
with_test_prefix $testname {
gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_test_no_output "set debug-file-directory $debugdir" \
"set debug-file-directory"
gdb_load ${binfile}-${testname}
if {[runto_main]} {
if {$testname == "mismatch"} {
gdb_test "print the_int" \
"(No symbol table is loaded|No symbol \"the_int\" in current context).*"
} else {
gdb_test "print the_int" " = 99"
}
}
}
}
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