| 1 | # Copyright 2010-2013 Free Software Foundation, Inc. |
| 2 | |
| 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. |
| 7 | # |
| 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. |
| 12 | # |
| 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/>. |
| 15 | |
| 16 | # The problem was due to amd64_skip_prologue attempting to access inferior |
| 17 | # memory before the PIE (Position Independent Executable) gets relocated. |
| 18 | |
| 19 | if ![istarget *-linux*] { |
| 20 | continue |
| 21 | } |
| 22 | |
| 23 | # Remote protocol does not support follow-exec notifications. |
| 24 | |
| 25 | if [is_remote target] { |
| 26 | continue |
| 27 | } |
| 28 | |
| 29 | standard_testfile .c |
| 30 | set executable1 ${testfile}1 |
| 31 | set executable2 ${testfile}2 |
| 32 | set binfile1 ${binfile}1 |
| 33 | set binfile2 ${binfile}2 |
| 34 | set binfile2_test_msg OBJDIR/${subdir}/${executable2} |
| 35 | |
| 36 | # Use conditional compilation according to `BIN' as GDB remembers the source |
| 37 | # file name of the breakpoint. |
| 38 | |
| 39 | set opts [list debug additional_flags=-fPIE ldflags=-pie] |
| 40 | if {[build_executable ${testfile}.exp $executable1 $srcfile [concat $opts {additional_flags=-DBIN=1}]] == "" |
| 41 | || [build_executable ${testfile}.exp $executable2 $srcfile [concat $opts {additional_flags=-DBIN=2}]] == ""} { |
| 42 | return -1 |
| 43 | } |
| 44 | |
| 45 | clean_restart ${executable1} |
| 46 | |
| 47 | gdb_test_no_output "set args ${binfile2}" "set args ${binfile2_test_msg}" |
| 48 | |
| 49 | if ![runto_main] { |
| 50 | return -1 |
| 51 | } |
| 52 | |
| 53 | # Do not stop on `main' after re-exec. |
| 54 | delete_breakpoints |
| 55 | |
| 56 | gdb_breakpoint "pie_execl_marker" |
| 57 | gdb_test "info breakpoints" ".*" "" |
| 58 | |
| 59 | set addr1 "" |
| 60 | set test "pie_execl_marker address first" |
| 61 | gdb_test_multiple "p/x &pie_execl_marker" $test { |
| 62 | -re " = (0x\[0-9a-f\]+)\r\n$gdb_prompt $" { |
| 63 | set addr1 $expect_out(1,string) |
| 64 | pass $test |
| 65 | } |
| 66 | } |
| 67 | verbose -log "addr1 is $addr1" |
| 68 | |
| 69 | set test "continue" |
| 70 | gdb_test_multiple $test $test { |
| 71 | -re "Error in re-setting breakpoint" { |
| 72 | fail $test |
| 73 | } |
| 74 | -re "Cannot access memory" { |
| 75 | fail $test |
| 76 | } |
| 77 | -re "pie-execl: re-exec.*executing new program.*\r\nBreakpoint \[0-9\]+,\[^\r\n\]* pie_execl_marker .*\r\n$gdb_prompt $" { |
| 78 | pass $test |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | gdb_test "info breakpoints" ".*" "" |
| 83 | |
| 84 | set addr2 "" |
| 85 | set test "pie_execl_marker address second" |
| 86 | gdb_test_multiple "p/x &pie_execl_marker" $test { |
| 87 | -re " = (0x\[0-9a-f\]+)\r\n$gdb_prompt $" { |
| 88 | set addr2 $expect_out(1,string) |
| 89 | pass $test |
| 90 | } |
| 91 | } |
| 92 | verbose -log "addr2 is $addr2" |
| 93 | |
| 94 | # Ensure we cannot get a false PASS and the inferior has really changed. |
| 95 | set test "pie_execl_marker address has changed" |
| 96 | if [string equal $addr1 $addr2] { |
| 97 | fail $test |
| 98 | } else { |
| 99 | pass $test |
| 100 | } |