| # Copyright 2013-2021 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. |
| if {![dwarf2_support]} { |
| return 0 |
| } |
| |
| standard_testfile main.c |
| |
| if { [prepare_for_testing "failed to prepare" "${testfile}" \ |
| [list ${srcfile}]] } { |
| return -1 |
| } |
| |
| # Add a .gdb_index section to PROGRAM. |
| # PROGRAM is assumed to be the output of standard_output_file. |
| # Returns the path of the program or "" if there is a failure. |
| # If there is a failure it will have already been logged. |
| # Use local prefix to prevent overriding add_gdb_index from lib/gdb.exp. |
| |
| proc local_add_gdb_index { program } { |
| set index_file ${program}.gdb-index |
| set dir [file dirname ${program}] |
| set filename [file tail ${program}] |
| set dwz $dir/.tmp/${filename}.dwz |
| set dwz_index_file $program.dwz.gdb-index |
| verbose -log "index_file: ${index_file}" |
| remote_file host delete ${index_file} |
| remote_file host delete ${dwz_index_file} |
| gdb_test_no_output "save gdb-index [file dirname ${index_file}]" \ |
| "save gdb-index for file [file tail ${program}]" |
| |
| # No point in continuing if generating the index failed. |
| # N.B.: There are times when gdb won't create an index, and it's not a |
| # failure. However, in our case we need an index. So if you find one |
| # not being generated, you'll either have to tweak the .c file or maybe |
| # add a flag to force an index to be generated. |
| if { [remote_file host exists ${index_file}] } { |
| pass "gdb-index file created" |
| } else { |
| fail "gdb-index file created" |
| return "" |
| } |
| |
| set program_with_index ${program}.with-index |
| if {[run_on_host "objcopy" [gdb_find_objcopy] "--remove-section .gdb_index --add-section .gdb_index=$index_file --set-section-flags .gdb_index=readonly ${program} ${program_with_index}"]} { |
| return "" |
| } |
| |
| with_test_prefix "modify dwz file" { |
| if { [remote_file host exists ${dwz_index_file}] } { |
| # We're modifying $dwz in place, otherwise we'd have to update |
| # .gnu_debugaltlink in $program. |
| set args [join [list "--remove-section .gdb_index" \ |
| " --add-section .gdb_index=$dwz_index_file" \ |
| " --set-section-flags .gdb_index=readonly $dwz"]] |
| if {[run_on_host "objcopy" [gdb_find_objcopy] "$args"]} { |
| return "" |
| } |
| } |
| } |
| |
| return ${program_with_index} |
| } |
| |
| # Build a copy of the program with an index (.gdb_index/.debug_names). |
| # But only if the toolchain didn't already create one: gdb doesn't support |
| # building an index from a program already using one. |
| |
| set test "check if index present" |
| gdb_test_multiple "mt print objfiles ${testfile}" $test { |
| -re "gdb_index.*${gdb_prompt} $" { |
| set binfile_with_index $binfile |
| } |
| -re "debug_names.*${gdb_prompt} $" { |
| set binfile_with_index $binfile |
| } |
| -re "Psymtabs.*${gdb_prompt} $" { |
| set binfile_with_index [local_add_gdb_index $binfile] |
| if { ${binfile_with_index} == "" } { |
| return -1 |
| } |
| } |
| } |
| |
| # Ok, we have a copy of $binfile with an index. |
| # Restart gdb and verify the index was used. |
| |
| clean_restart ${binfile_with_index} |
| gdb_test "mt print objfiles ${testfile}" \ |
| "(gdb_index|debug_names).*" \ |
| "index used" |
| |
| # Make gdb re-read symbols and see if .gdb_index/.debug_names still |
| # gets used. symtab/15885 |
| |
| # There is gdb_touch_execfile, but it doesn't handle remote hosts. |
| # Is touch portable enough? |
| # First make sure enough time has passed, file mtime resolution is seconds. |
| gdb_test_no_output "shell sleep 1" |
| if {[run_on_host "touch binary" touch ${binfile_with_index}]} { |
| return -1 |
| } |
| |
| if ![runto_main] { |
| return -1 |
| } |
| gdb_test "mt print objfiles ${testfile}" \ |
| "(gdb_index|debug_names).*" \ |
| "index used after symbol reloading" |