172 lines
4.6 KiB
Plaintext
172 lines
4.6 KiB
Plaintext
# Copyright 2013-2018 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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load_lib dwarf.exp
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# This test can only be run on targets which support DWARF-2 and use gas.
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if {![dwarf2_support]} {
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return 0
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}
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# No remote host testing either.
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if {[is_remote host]} {
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return 0
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}
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# Lots of source files since we test a few cases and make new files
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# for each.
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# The tests are:
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# ok - the main file refers to a dwz and the buildids match
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# mismatch - the buildids do not match
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# fallback - the buildids do not match but a match is found via buildid
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standard_testfile main.c \
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dwzbuildid-ok-base.S dwzbuildid-ok-sep.S \
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dwzbuildid-mismatch-base.S dwzbuildid-mismatch-sep.S \
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dwzbuildid-fallback-base.S dwzbuildid-fallback-sep.S \
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dwzbuildid-fallback-ok.S
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# Write some assembly that just has a .gnu_debugaltlink section.
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proc write_just_debugaltlink {filename dwzname buildid} {
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set asm_file [standard_output_file $filename]
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Dwarf::assemble $asm_file {
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upvar dwzname dwzname
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upvar buildid buildid
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gnu_debugaltlink $dwzname $buildid
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# Only the DWARF reader checks .gnu_debugaltlink, so make sure
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# there is a bit of DWARF in here.
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cu {} {
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compile_unit {{language @DW_LANG_C}} {
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}
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}
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}
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}
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# Write some DWARF that also sets the buildid.
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proc write_dwarf_file {filename buildid {value 99}} {
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set asm_file [standard_output_file $filename]
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Dwarf::assemble $asm_file {
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declare_labels int_label int_label2
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upvar buildid buildid
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upvar value value
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build_id $buildid
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cu {} {
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compile_unit {{language @DW_LANG_C}} {
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int_label2: base_type {
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{name int}
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{byte_size 4 sdata}
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{encoding @DW_ATE_signed}
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}
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constant {
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{name the_int}
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{type :$int_label2}
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{const_value $value data1}
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}
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}
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}
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}
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}
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if { [gdb_compile ${srcdir}/${subdir}/${srcfile} ${binfile}1.o \
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object {nodebug}] != "" } {
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return -1
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}
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# The values don't really matter, just whether they are equal.
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set ok_prefix 01
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set ok_suffix 0203040506
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set ok_suffix2 02030405ff
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set ok_buildid ${ok_prefix}${ok_suffix}
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set ok_buildid2 ${ok_prefix}${ok_suffix2}
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set bad_buildid ffffffffffff
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set debugdir [standard_output_file {}]
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set basedir $debugdir/.build-id
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file mkdir $basedir $basedir/$ok_prefix
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# Test where the separate debuginfo's buildid matches.
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write_just_debugaltlink $srcfile2 ${binfile}3.o $ok_buildid
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write_dwarf_file $srcfile3 $ok_buildid
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# Test where the separate debuginfo's buildid does not match.
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write_just_debugaltlink $srcfile4 ${binfile}5.o $ok_buildid
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write_dwarf_file $srcfile5 $bad_buildid
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# Test where the separate debuginfo's buildid does not match, but then
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# we find a match in the .build-id directory.
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write_just_debugaltlink $srcfile6 ${binfile}7.o $ok_buildid2
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# Use 77 as the value so that if we load the bad debuginfo, we will
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# see the wrong result.
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write_dwarf_file $srcfile7 $bad_buildid 77
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write_dwarf_file $srcfile8 $ok_buildid2
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# Compile everything.
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for {set i 2} {$i <= 8} {incr i} {
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if {[gdb_compile [standard_output_file [set srcfile$i]] \
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${binfile}$i.o object nodebug] != ""} {
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return -1
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}
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}
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# Copy a file into the .build-id place for the "fallback" test.
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file copy -force -- ${binfile}8.o $basedir/$ok_prefix/$ok_suffix2.debug
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# Link the executables.
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if {[gdb_compile [list ${binfile}1.o ${binfile}2.o] ${binfile}-ok \
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executable {}] != ""} {
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return -1
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}
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if {[gdb_compile [list ${binfile}1.o ${binfile}4.o] ${binfile}-mismatch \
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executable {}] != ""} {
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return -1
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}
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if {[gdb_compile [list ${binfile}1.o ${binfile}6.o] ${binfile}-fallback \
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executable {}] != ""} {
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return -1
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}
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foreach testname {ok mismatch fallback} {
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with_test_prefix $testname {
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gdb_exit
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gdb_start
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_test_no_output "set debug-file-directory $debugdir" \
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"set debug-file-directory"
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gdb_load ${binfile}-${testname}
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if {[runto_main]} {
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if {$testname == "mismatch"} {
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gdb_test "print the_int" \
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"(No symbol table is loaded|No symbol \"the_int\" in current context).*"
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} else {
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gdb_test "print the_int" " = 99"
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}
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}
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}
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}
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