# Copyright 2002
# 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 2 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, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
# Please email any bugs, comments, and/or additions to this file to:
# bug-gdb@prep.ai.mit.edu
# This file was written by Jason Molenda (jmolenda@apple.com)
if $tracelevel then {
strace $tracelevel
}
# Test library slides. On MacOS X, most system libraries have set
# addresses where they will load. Our libc-like library, libSystem, loads
# at 0x90000000 or somesuch, for instance. If another shared library tries
# to go at that same address, it gets shifted to another addr, and gdb needs
# to (1) notice that shift, (2) update all the symbols and breakpoints.
set timeout 30
set prms_id 0
set bug_id 0
set testfile "slipnslide"
set binfile ${objdir}/${subdir}/${testfile}
if { [gdb_compile "${srcdir}/${subdir}/slipnslide.c" "${binfile}" executable {debug}] != "" } {
gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
}
# Start with a fresh gdb
gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_load ${binfile}
# Figure out where libSystem normally loads, its full pathname, and its short
# name.
send_gdb "info sharedlibrary\n"
gdb_expect {
-re ".* (libSystem...dylib) *(-|$hex) *- *init Y Y (.*libSystem.B.dylib) at ($hex)( \\(offset (0x0)\\))?\[\r\n\].*" {
pass "get libSystem pre-startup load address"
set libsystem_shortname $expect_out(1,string)
set libsystem_full_pathname $expect_out(3,string)
set libsystem_load_addr $expect_out(4,string)
}
-re "$gdb_prompt $" {
fail "get libSystem pre-startup load address"
}
timeout {
fail "(timeout) get libSystem pre-startup load address"
}
}
# See where printf() normally loads.
set printf_address {}
send_gdb "p printf\n"
gdb_expect {
-re ".*\\\$1 = .* ($hex) <printf>.*$gdb_prompt $" {
pass "get printf pre-start load address"
set printf_address $expect_out(1,string)
}
-re "$gdb_prompt $" {
fail "get printf pre-start load address"
}
timeout {
fail "(timeout) get printf pre-start load address"
}
}
# See where puts() normally loads.
send_gdb "p puts\n"
gdb_expect {
-re ".*\\\$2 = .* ($hex) <puts>.*$gdb_prompt $" {
pass "get puts pre-start load address"
set libsystem_puts_address $expect_out(1,string)
}
-re "$gdb_prompt $" {
fail "get puts pre-start load address"
}
timeout {
fail "(timeout) get puts pre-start load address"
}
}
if ![runto_main] then {
fail "slipnslide tests suppressed"
return -1
}
# Verify that nothing has slid with the default case.
send_gdb "info sharedlibrary\n"
gdb_expect {
-re ".* $decimal $libsystem_shortname *- $libsystem_load_addr *dyld Y Y $libsystem_full_pathname at $libsystem_load_addr \\(offset 0x0\\).*$gdb_prompt $" {
pass "default libSystem didn't slide"
}
-re "$gdb_prompt $" {
fail "default libSystem didn't slide"
}
timeout {
fail "(timeout) default libSystem didn't slide"
}
}
# Verify that printf is where it should be.
gdb_test "p printf" "\\\$3 = .* $printf_address <printf>" "printf is where it should be on a non-slide"
gdb_exit
##
## Now we verify all that via MI just for fun.
##
load_lib mi-support.exp
set MIFLAGS "-i=mi1"
mi_gdb_start
mi_delete_breakpoints
mi_gdb_reinitialize_dir $srcdir/$subdir
mi_gdb_load ${binfile}
mi_gdb_test "10-file-sharedlibrary-info" "10\\^done.*shlib-info=\\\[num=\"$decimal\",name=\"$libsystem_shortname\",kind=\"-\",dyld-addr=\"-\",reason=\"init\",requested-state=\"Y\",state=\"Y\",path=\"$libsystem_full_pathname\",slide=\"\",loaded_addr=\"$libsystem_load_addr\",prefix=\"\"\\\].*" "verify pre-start libsystem via mi1"
mi_gdb_test "20-break-insert main" "20\\^done,bkpt=.*"
mi_gdb_test "30-gdb-set stop-on-solib-events 1" "30\\^done" "gdb shows solib events"
send_gdb "40-exec-run\n"
gdb_expect {
-re "(40\\^running\[\r\n\]|=shlibs-updated\[\r\n\]|$mi_gdb_prompt)+" {
pass "first part of run startup.."
}
timeout {
fail "(timeout) first part of run startup.. in mi1"
}
}
gdb_expect {
-re ".*\\\*stopped,reason=\"shlib-event\".*$mi_gdb_prompt$" {
pass "catch shlib-event during startup"
}
timeout {
fail "(timeout) catch shlib-event during startup in mi1"
}
}
mi_gdb_test "50-file-sharedlibrary-info" "50\\^done.*shlib-info=\\\[num=\"$decimal\",name=\"$libsystem_shortname\",kind=\"-\",dyld-addr=\"$libsystem_load_addr\",reason=\"dyld\",requested-state=\"Y\",state=\"Y\",path=\"$libsystem_full_pathname\",loaded_addr=\"$libsystem_load_addr\",slide=\"0x0\",prefix=\"\"\\\].*" "verify pre-start libsystem via mi1"
mi_gdb_exit
##
## Now create a shared library that conflicts with libSystem.
##
set testlibfile "libmylib"
set libbinfile ${objdir}/${subdir}/${testlibfile}.dylib
set additional_flags "additional_flags=-dynamiclib -seg1addr $libsystem_load_addr"
if { [gdb_compile "${srcdir}/${subdir}/${testlibfile}.c" "${libbinfile}" executable [list debug $additional_flags]] != "" } {
gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
}
##
## Mix it all up and see what happens..
##
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_test "set env DYLD_INSERT_LIBRARIES $libbinfile" ""
gdb_load ${binfile}
# Verify that libSystem and mylib are both going to try loading at the same addr.
send_gdb "info sharedlibrary\n"
gdb_expect {
-re ".* $decimal ${testlibfile}.dylib *- *- *init Y Y $libbinfile at $libsystem_load_addr.* $decimal $libsystem_shortname *- *- *init Y Y $libsystem_full_pathname at $libsystem_load_addr.*$gdb_prompt $" {
pass "libmylib and libsystem will both try to load at same addr"
}
-re "$gdb_prompt $" {
fail "libmylib and libsystem will both try to load at same addr"
}
timeout {
fail "(timeout) libmylib and libsystem will both try to load at same addr"
}
}
# Get address of function 'foo' in mylib, pre-slid
# See where foo() normally loads.
send_gdb "p foo\n"
gdb_expect {
-re ".*\\\$1 = .* ($hex) <foo>.*$gdb_prompt $" {
pass "get foo pre-start load address"
set foo_address $expect_out(1,string)
}
-re "$gdb_prompt $" {
fail "get foo pre-start load address"
set foo_address -1
}
timeout {
fail "(timeout) get foo pre-start load address"
set foo_address -1
}
}
# See where puts() thinks it's going to load this time..
send_gdb "p puts\n"
gdb_expect {
-re ".*\\\$2 = .* ($hex) <puts>.*$gdb_prompt $" {
pass "get puts pre-start load address"
set puts_address $expect_out(1,string)
}
-re "$gdb_prompt $" {
fail "get puts pre-start load address"
set puts_address -1
}
timeout {
fail "(timeout) get puts pre-start load address"
set puts_address -1
}
}
# Set three breakpoints: One on a function only in mylib.dylib, one
# that exists in both mylib.dylib and libSystem, and one in only libSystem.
send_gdb "b foo\n"
gdb_expect {
-re "Breakpoint 1 at ($hex): file .*$gdb_prompt $" {
set foo_breakpoint_address $expect_out(1,string)
}
timeout { fail "could not set breakpoint on foo" }
}
send_gdb "b puts\n"
gdb_expect {
-re "Breakpoint 2 at ($hex): file .*$gdb_prompt $" {
set puts_breakpoint_address $expect_out(1,string)
}
timeout { fail "could not set breakpoint on puts" }
}
send_gdb "b printf\n"
gdb_expect {
-re "Breakpoint 3 at ($hex).*$gdb_prompt $" {
set printf_breakpoint_address $expect_out(1,string)
}
timeout { fail "could not set breakpoint on printf" }
}
set foo_offset_pre_start [expr $foo_address - $libsystem_load_addr]
set puts_offset_pre_start [expr $puts_address - $libsystem_load_addr]
set foo_breakpoint_offset_pre_start [expr $foo_breakpoint_address - $libsystem_load_addr]
set puts_breakpoint_offset_pre_start [expr $puts_breakpoint_address - $libsystem_load_addr]
set printf_breakpoint_offset_pre_start [expr $printf_breakpoint_address - $libsystem_load_addr]
gdb_test "b main" "Breakpoint 4 at .*"
gdb_test "run" "Starting program:.*"
# Verify that mydlib slid like it should have and libSystem stayed put.
send_gdb "info sharedlibrary\n"
gdb_expect {
-re ".* $decimal ${testlibfile}.dylib *- ($hex) *dyld Y Y $libbinfile at ($hex) \\(offset (0x\[^0\]\[0-9a-fA-F\]+)\\).* $decimal $libsystem_shortname *- $libsystem_load_addr *dyld Y Y $libsystem_full_pathname at $libsystem_load_addr \\(offset 0x0\\).*$gdb_prompt $" {
set mylib_slid_addr $expect_out(1,string)
set mylib_slid_addr_duplicate $expect_out(1,string)
set mylib_slid_offset $expect_out(2,string)
pass "mylib slid, libsystem stayed put"
if {$mylib_slid_addr != $libsystem_load_addr} {
pass "mylib is at address other than libsystem"
} else {
fail "mylib is at address other than libsystem"
}
if {$mylib_slid_addr == $mylib_slid_addr_duplicate} {
pass "load addresses from info sharedlibrary match"
} else {
fail "load addresses from info sharedlibrary match"
}
}
-re "$gdb_prompt $" {
fail "mylib slid, libsystem stayed put"
set mylib_slid_addr -1
set mylib_slid_addr_duplicate -1
set mylib_slid_offset -1
}
timeout {
fail "(timeout) mylib slid, libsystem stayed put"
set mylib_slid_addr -1
set mylib_slid_addr_duplicate -1
set mylib_slid_offset -1
}
}
# See where foo actually loaded.
send_gdb "p foo\n"
gdb_expect {
-re ".*\\\$$decimal = .* ($hex) <foo>.*$gdb_prompt $" {
pass "get foo post-start load address"
set foo_loaded_address $expect_out(1,string)
}
-re "$gdb_prompt $" {
fail "get foo pre-start load address"
}
timeout {
fail "(timeout) get foo pre-start load address"
}
}
if {$foo_address != $foo_loaded_address} {
pass "address of foo must change when library slid"
} else {
fail "address of foo must change when library slid"
}
# See where puts actually loaded.
send_gdb "p puts\n"
gdb_expect {
-re ".*\\\$$decimal = .* ($hex) <puts>.*$gdb_prompt $" {
pass "get puts post-start load address"
set puts_loaded_address $expect_out(1,string)
}
-re "$gdb_prompt $" {
fail "get puts pre-start load address"
}
timeout {
fail "(timeout) get puts pre-start load address"
}
}
if {$puts_address != $puts_loaded_address} {
pass "address of puts must change when library slid"
} else {
fail "address of puts must change when library slid"
}
if {$puts_address != $libsystem_puts_address || $puts_loaded_address != $libsystem_puts_address} {
pass "evaluation of puts is mylib version, not libsystem"
} else {
fail "evaluation of puts is mylib version, not libsystem"
}
# See where printf actually loaded.
send_gdb "p printf\n"
gdb_expect {
-re ".*\\\$$decimal = .* ($hex) <printf>.*$gdb_prompt $" {
pass "get printf post-start load address"
set printf_loaded_address $expect_out(1,string)
}
-re "$gdb_prompt $" {
fail "get printf pre-start load address"
}
timeout {
fail "(timeout) get printf pre-start load address"
}
}
if {$printf_address == $printf_loaded_address} {
pass "address of printf didn't changed when user library slid"
} else {
fail "address of printf didn't changed when user library slid"
}
set foo_offset_slid [expr $foo_loaded_address - $mylib_slid_addr]
set puts_offset_slid [expr $puts_loaded_address - $mylib_slid_addr]
set printf_offset_slid [expr $printf_loaded_address - $libsystem_load_addr]
if {$foo_offset_pre_start == $foo_offset_slid} {
pass "offset of foo in mylib.dylib stayed same after slide."
} else {
fail "offset of foo in mylib.dylib stayed same after slide."
}
if {$puts_offset_pre_start == $puts_offset_slid} {
pass "offset of puts in mylib.dylib stayed same after slide."
} else {
fail "offset of puts in mylib.dylib stayed same after slide."
}
# See that 'foo' breakpoint moved.
send_gdb "info br 1\n"
gdb_expect {
-re ".*$decimal *breakpoint *keep y *($hex) in foo.*$gdb_prompt $" {
set foo_slid_address $expect_out(1,string)
}
-re "$gdb_prompt $" {
set foo_slid_address -1
fail "could not examine foo breakpoint"
}
timeout {
set foo_slid_address -1
fail "(timeout) could not examine foo breakpoint"
}
}
if {$foo_slid_address != $foo_breakpoint_address } {
pass "pass breakpoint on foo slid with library"
} else {
fail "pass breakpoint on foo slid with library"
}
# See that 'puts' breakpoint moved.
send_gdb "info br 2\n"
gdb_expect {
-re ".*$decimal *breakpoint *keep y *($hex) in puts.*$gdb_prompt $" {
set puts_slid_address $expect_out(1,string)
}
-re "$gdb_prompt $" {
set puts_slid_address -1
fail "could not examine puts breakpoint"
}
timeout {
set puts_slid_address -1
fail "(timeout) could not examine puts breakpoint"
}
}
if {$puts_slid_address != $puts_breakpoint_address } {
pass "pass breakpoint on puts slid with library"
} else {
fail "pass breakpoint on puts slid with library"
}
# See that 'printf' breakpoint didn't moved.
send_gdb "info br 3\n"
gdb_expect {
-re ".*$decimal *breakpoint *keep y *($hex) <printf.*$gdb_prompt $" {
set printf_slid_address $expect_out(1,string)
}
-re "$gdb_prompt $" {
set printf_slid_address -1
fail "could not examine printf breakpoint"
}
timeout {
set printf_slid_address -1
fail "(timeout) could not examine printf breakpoint"
}
}
if {$printf_slid_address == $printf_breakpoint_address} {
pass "pass breakpoint on printf in Libsystem didn't slide"
} else {
fail "pass breakpoint on printf in Libsystem didn't slide"
}
gdb_test "dis 3" ""
gdb_test "continue" "Breakpoint 1, foo.*libmylib.c:.*" "continue to slid breakpoint on foo"
gdb_exit
return 0