1 # Copyright 2013-2019 Free Software Foundation, Inc.
3 # This program is free software; you can redistribute it and/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation; either version 3 of the License, or
6 # (at your option) any later version.
8 # This program is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
13 # You should have received a copy of the GNU General Public License
14 # along with this program. If not, see <http://www.gnu.org/licenses/>.
18 # This test can only be run on targets which support DWARF-2.
19 if {![dwarf2_support]} {
23 standard_testfile main.c
25 if { [prepare_for_testing "failed to prepare" "${testfile}" \
26 [list ${srcfile}]] } {
30 # Add a .gdb_index section to PROGRAM.
31 # PROGRAM is assumed to be the output of standard_output_file.
32 # Returns the path of the program or "" if there is a failure.
33 # If there is a failure it will have already been logged.
35 proc add_gdb_index { program } {
36 set index_file ${program}.gdb-index
37 set dwz ${program}.dwz
38 set dwz_index_file ${dwz}.gdb-index
39 verbose -log "index_file: ${index_file}"
40 remote_file host delete ${index_file}
41 remote_file host delete ${dwz_index_file}
42 gdb_test_no_output "save gdb-index [file dirname ${index_file}]" \
43 "save gdb-index for file [file tail ${program}]"
45 # No point in continuing if generating the index failed.
46 # N.B.: There are times when gdb won't create an index, and it's not a
47 # failure. However, in our case we need an index. So if you find one
48 # not being generated, you'll either have to tweak the .c file or maybe
49 # add a flag to force an index to be generated.
50 if { [remote_file host exists ${index_file}] } {
51 pass "gdb-index file created"
53 fail "gdb-index file created"
57 set program_with_index ${program}.with-index
58 if {[run_on_host "objcopy" [gdb_find_objcopy] "--remove-section .gdb_index --add-section .gdb_index=$index_file --set-section-flags .gdb_index=readonly ${program} ${program_with_index}"]} {
62 if { [remote_file host exists ${dwz_index_file}] } {
63 # We're modifying $dwz in place, otherwise we'd have to update
64 # .gnu_debugaltlink in $program.
65 set args [join [list "--remove-section .gdb_index" \
66 " --add-section .gdb_index=$dwz_index_file" \
67 " --set-section-flags .gdb_index=readonly $dwz"]]
68 if {[run_on_host "objcopy" [gdb_find_objcopy] "$args"]} {
73 return ${program_with_index}
76 # Build a copy of the program with an index (.gdb_index/.debug_names).
77 # But only if the toolchain didn't already create one: gdb doesn't support
78 # building an index from a program already using one.
80 set test "check if index present"
81 gdb_test_multiple "mt print objfiles ${testfile}" $test {
82 -re "gdb_index.*${gdb_prompt} $" {
83 set binfile_with_index $binfile
85 -re "debug_names.*${gdb_prompt} $" {
86 set binfile_with_index $binfile
88 -re "Psymtabs.*${gdb_prompt} $" {
89 set binfile_with_index [add_gdb_index $binfile]
90 if { ${binfile_with_index} == "" } {
96 # Ok, we have a copy of $binfile with an index.
97 # Restart gdb and verify the index was used.
99 clean_restart ${binfile_with_index}
100 gdb_test "mt print objfiles ${testfile}" \
101 "(gdb_index|debug_names).*" \
104 # Make gdb re-read symbols and see if .gdb_index/.debug_names still
105 # gets used. symtab/15885
107 # There is gdb_touch_execfile, but it doesn't handle remote hosts.
108 # Is touch portable enough?
109 # First make sure enough time has passed, file mtime resolution is seconds.
110 gdb_test_no_output "shell sleep 1"
111 if {[run_on_host "touch binary" touch ${binfile_with_index}]} {
118 gdb_test "mt print objfiles ${testfile}" \
119 "(gdb_index|debug_names).*" \
120 "index used after symbol reloading"