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# Copyright 2010-2018 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/>.
# The problem was due to amd64_skip_prologue attempting to access inferior
# memory before the PIE (Position Independent Executable) gets relocated.
global inferior_spawn_id
global gdb_spawn_id
if ![istarget *-linux*] {
continue
}
# In remote mode we cannot use the 'set args' command, and this
# test requires it.
if { [target_info exists gdb_protocol] } then {
if { [target_info gdb_protocol] == "remote" } then {
continue
}
}
standard_testfile .c
set executable1 ${testfile}1
set executable2 ${testfile}2
set binfile1 ${binfile}1
set binfile2 ${binfile}2
set binfile2_test_msg OBJDIR/${subdir}/${executable2}
# Use conditional compilation according to `BIN' as GDB remembers the source
# file name of the breakpoint.
set opts [list debug additional_flags=-fPIE ldflags=-pie]
if {[build_executable ${testfile}.exp $executable1 $srcfile [concat $opts {additional_flags=-DBIN=1}]] == -1
|| [build_executable ${testfile}.exp $executable2 $srcfile [concat $opts {additional_flags=-DBIN=2}]] == -1} {
return -1
}
clean_restart ${executable1}
gdb_test_no_output "set args ${binfile2}" "set args ${binfile2_test_msg}"
if ![runto_main] {
return -1
}
# Do not stop on `main' after re-exec.
delete_breakpoints
gdb_breakpoint "pie_execl_marker"
gdb_test "info breakpoints" ".*" ""
set addr1 ""
set test "pie_execl_marker address first"
gdb_test_multiple "p/x &pie_execl_marker" $test {
-re " = (0x\[0-9a-f\]+)\r\n$gdb_prompt $" {
set addr1 $expect_out(1,string)
pass $test
}
}
verbose -log "addr1 is $addr1"
set test "continue"
set matches_found 0
gdb_test_multiple $test $test {
-re "Error in re-setting breakpoint" {
fail $test
}
-re "Cannot access memory" {
fail $test
}
-i "$inferior_spawn_id" -re "pie-execl: re-exec" {
# output from inferior
incr matches_found
if { $matches_found == 2 } {
pass $test
} else {
exp_continue
}
}
-i "$gdb_spawn_id"
-re "executing new program.*\r\nBreakpoint \[0-9\]+,\[^\r\n\]* pie_execl_marker .*\r\n$gdb_prompt $" {
# output from gdb
incr matches_found
if { $matches_found == 2 } {
pass $test
} else {
exp_continue
}
}
}
gdb_test "info breakpoints" ".*" ""
set addr2 ""
set test "pie_execl_marker address second"
gdb_test_multiple "p/x &pie_execl_marker" $test {
-re " = (0x\[0-9a-f\]+)\r\n$gdb_prompt $" {
set addr2 $expect_out(1,string)
pass $test
}
}
verbose -log "addr2 is $addr2"
# Ensure we cannot get a false PASS and the inferior has really changed.
set test "pie_execl_marker address has changed"
if [string equal $addr1 $addr2] {
fail $test
} else {
pass $test
}
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