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127 lines
4.3 KiB
Plaintext
127 lines
4.3 KiB
Plaintext
# Copyright 2013-2023 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.
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require dwarf2_support
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standard_testfile main.c
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if { [prepare_for_testing "failed to prepare" "${testfile}" \
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[list ${srcfile}]] } {
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return -1
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}
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# Add a .gdb_index section to PROGRAM.
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# PROGRAM is assumed to be the output of standard_output_file.
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# Returns the path of the program or "" if there is a failure.
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# If there is a failure it will have already been logged.
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# Use local prefix to prevent overriding add_gdb_index from lib/gdb.exp.
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proc local_add_gdb_index { program } {
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set index_file ${program}.gdb-index
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set dir [file dirname ${program}]
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set filename [file tail ${program}]
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set dwz $dir/.tmp/${filename}.dwz
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set dwz_index_file $program.dwz.gdb-index
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verbose -log "index_file: ${index_file}"
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remote_file host delete ${index_file}
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remote_file host delete ${dwz_index_file}
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gdb_test_no_output "save gdb-index [file dirname ${index_file}]" \
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"save gdb-index for file [file tail ${program}]"
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# No point in continuing if generating the index failed.
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# N.B.: There are times when gdb won't create an index, and it's not a
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# failure. However, in our case we need an index. So if you find one
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# not being generated, you'll either have to tweak the .c file or maybe
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# add a flag to force an index to be generated.
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if { [remote_file host exists ${index_file}] } {
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pass "gdb-index file created"
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} else {
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fail "gdb-index file created"
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return ""
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}
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set program_with_index ${program}.with-index
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if {[run_on_host "objcopy" [gdb_find_objcopy] "--remove-section .gdb_index --add-section .gdb_index=$index_file --set-section-flags .gdb_index=readonly ${program} ${program_with_index}"]} {
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return ""
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}
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with_test_prefix "modify dwz file" {
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if { [remote_file host exists ${dwz_index_file}] } {
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# We're modifying $dwz in place, otherwise we'd have to update
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# .gnu_debugaltlink in $program.
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set args [join [list "--remove-section .gdb_index" \
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" --add-section .gdb_index=$dwz_index_file" \
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" --set-section-flags .gdb_index=readonly $dwz"]]
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if {[run_on_host "objcopy" [gdb_find_objcopy] "$args"]} {
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return ""
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}
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}
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}
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return ${program_with_index}
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}
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# Build a copy of the program with an index (.gdb_index/.debug_names).
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# But only if the toolchain didn't already create one: gdb doesn't support
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# building an index from a program already using one.
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set test "check if index present"
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gdb_test_multiple "mt print objfiles ${testfile}" $test {
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-re "gdb_index.*${gdb_prompt} $" {
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set binfile_with_index $binfile
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}
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-re "debug_names.*${gdb_prompt} $" {
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set binfile_with_index $binfile
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}
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-re "(Psymtabs|Cooked).*${gdb_prompt} $" {
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set binfile_with_index [local_add_gdb_index $binfile]
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if { ${binfile_with_index} == "" } {
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return -1
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}
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}
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-re ".*${gdb_prompt} $" {
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fail "unrecognized symbol reader"
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}
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}
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# Ok, we have a copy of $binfile with an index.
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# Restart gdb and verify the index was used.
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clean_restart ${binfile_with_index}
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gdb_test "mt print objfiles ${testfile}" \
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"(gdb_index|debug_names).*" \
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"index used"
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# Make gdb re-read symbols and see if .gdb_index/.debug_names still
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# gets used. symtab/15885
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# There is gdb_touch_execfile, but it doesn't handle remote hosts.
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# Is touch portable enough?
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# First make sure enough time has passed, file mtime resolution is seconds.
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gdb_test_no_output "shell sleep 1"
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if {[run_on_host "touch binary" touch ${binfile_with_index}]} {
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return -1
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}
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if ![runto_main] {
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return -1
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}
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gdb_test "mt print objfiles ${testfile}" \
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"(gdb_index|debug_names).*" \
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"index used after symbol reloading"
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