blob: f6d0cd73cbaef5487ac18cdc1b42fc30945e3c7b [file] [log] [blame]
# Copyright 2012-2021 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
# 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 <>.
if [build_executable ${testfile}.exp $testfile] {
return -1
set pipeline_counter 0
set objcopy_program [gdb_find_objcopy]
# Run a pipeline of processes through 'run_on_host'.
# TEST is the base name of the test, it is modified and passed to 'run_on_host'.
# Each subsequent argument is a list of the form {PROGRAM [ARG]...}.
# It is passed to 'run_on_host'. However, before being passed, if input and
# output files are not specified in the list, then this proc provides them.
# Each program in the pipeline takes its input from the previous
# program's output.
proc pipeline {test args} {
global pipeline_counter
set input_file {}
foreach arglist $args {
verbose "raw args are $arglist"
set program [lindex $arglist 0]
set arguments [lindex $arglist 1]
set input [lindex $arglist 2]
set output [lindex $arglist 3]
if {$input == ""} {
set input $input_file
if {$output == ""} {
set output [standard_output_file pipe.[pid].$pipeline_counter]
incr pipeline_counter
verbose "cooked args are [list $program $arguments $input $output]"
if {[run_on_host "$test - invoke $program" $program $arguments \
$input $output]} {
return -1
set input_file $output
return 0
# Extract the dynamic symbols from the main binary, there is no need
# to also have these in the normal symbol table.
remote_file host delete ${binfile}.dynsyms
if {[pipeline "nm -D" \
[list [transform nm] "-D ${binfile} --format=posix --defined-only"] \
[list awk "\\{print\\ \\\$1\\}"] \
[list sort "" "" "${binfile}.dynsyms"]]} {
return -1
# Extract all the text (i.e. function) symbols from the debuginfo.
# (Note that we actually also accept "D" symbols, for the benefit
# of platforms like PowerPC64 that use function descriptors.)
remote_file host delete ${binfile}.funcsyms
if {[pipeline "nm" \
[list [transform nm] "${binfile} --format=posix --defined-only"] \
[list awk "\\{if(\\\$2==\"T\"||\\\$2==\"t\"||\\\$2==\"D\")print\\ \\\$1\\}"] \
[list sort "" "" "${binfile}.funcsyms"]]} {
return -1
# Keep all the function symbols not already in the dynamic symbol
# table.
remote_file host delete ${binfile}.keep_symbols
if {[run_on_host "comm" "comm" "-13 ${binfile}.dynsyms ${binfile}.funcsyms" "" \
"${binfile}.keep_symbols"]} {
return -1
# GDB specific - we do not have split executable in advance.
remote_file host delete ${binfile}.strip
if {[run_on_host "strip" [transform strip] \
"--strip-all -R .comment -o ${binfile}.strip ${binfile}"]} {
return -1
# Separate full debug info into ${binfile}.debug.
remote_file host delete ${binfile}.debug
if {[run_on_host "copydebug" ${objcopy_program} \
"--only-keep-debug ${binfile} ${binfile}.debug"]} {
return -1
# Copy the full debuginfo, keeping only a minimal set of symbols and
# removing some unnecessary sections.
remote_file host delete ${binfile}.mini_debuginfo
if {[run_on_host "objcopy 1" ${objcopy_program} "-S --remove-section .gdb_index --remove-section .comment --keep-symbols=${binfile}.keep_symbols ${binfile}.debug ${binfile}.mini_debuginfo"]} {
return -1
# Add the .gnu_debuglink section to the .gnu_debugdata file.
# .gnu_debuglink is normally not present in the .gnu_debugdata section but in
# some files there may be PT_NOTE with NT_GNU_BUILD_ID and GDB could look up
# the .debug file from it. This is only an additional test of GDB, such link
# is not present in usual MiniDebugInfo sections.
if {[run_on_host "addlink" ${objcopy_program} \
"--add-gnu-debuglink=${binfile}.debug ${binfile}.mini_debuginfo ${binfile}.mini_debuginfo-debuglink"]} {
return -1
# Inject the compressed data into the .gnu_debugdata section of the
# original binary.
remote_file host delete ${binfile}.mini_debuginfo-debuglink.xz
if {[run_on_host "xz" "xz" "-k ${binfile}.mini_debuginfo-debuglink"]} {
return -1
remote_file host delete ${binfile}.test
if {[run_on_host "objcopy 2" ${objcopy_program} "--add-section .gnu_debugdata=${binfile}.mini_debuginfo-debuglink.xz ${binfile}.strip ${binfile}.test"]} {
return -1
clean_restart "$testfile.strip"
gdb_test "p debugdata_function" \
{No symbol table is loaded\. Use the "file" command\.} \
"no symtab"
clean_restart "$testfile.test"
if {$gdb_file_cmd_debug_info == "lzma"} {
unsupported "LZMA support not available in this gdb"
} else {
gdb_test "p debugdata_function" \
{ = {<text variable, no debug info>} 0x[0-9a-f]+ <debugdata_function>} \
"have symtab"
# Be sure to test the 'close' method on the MiniDebugInfo BFD.
if {[gdb_unload]} {
fail "unload MiniDebugInfo"
} else {
pass "unload MiniDebugInfo"