e22f8b7c8c
Switch the license of all .f and .f90 files to GPLv3.
Switch the license of all .s and .S files to GPLv3.
276 lines
6.9 KiB
Text
276 lines
6.9 KiB
Text
# Copyright (C) 2003, 2005, 2007 Free Software Foundation, Inc.
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#
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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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#
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# Tests for shared object file relocation. If two shared objects have
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# the same load address (actually, overlapping load spaces), one of
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# them gets relocated at load-time. Check that gdb gets the right
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# values for the debugging and minimal symbols.
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if {[skip_shlib_tests]} {
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return 0
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}
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if $tracelevel then {
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strace $tracelevel
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}
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#
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# This file uses shreloc.c, shreloc1.c and shreloc2.c
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#
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set prms_id 0
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set bug_id 0
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set workdir ${objdir}/${subdir}
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set testfile "shreloc"
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set libfile1 "shreloc1"
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set libfile2 "shreloc2"
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set srcfile $srcdir/$subdir/$testfile.c
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set lib1src $srcdir/$subdir/$libfile1.c
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set lib2src $srcdir/$subdir/$libfile2.c
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set binfile $objdir/$subdir/$testfile
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set lib1_sl $objdir/$subdir/$libfile1.sl
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set lib2_sl $objdir/$subdir/$libfile2.sl
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if [get_compiler_info ${binfile}] {
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return -1
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}
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set lib_opts "debug"
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set exec_opts [list debug shlib=$lib1_sl shlib=$lib2_sl]
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if {([istarget "*pc-cygwin"] || [istarget "*pc-mingw32"]) } {
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lappend lib_opts "ldflags=-Wl,--image-base,0x04000000"
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}
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if [test_compiler_info "xlc-*"] {
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# IBM's xlc compiler does not add static variables to the ELF symbol
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# table by default. We need this option to make the variables show
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# up in "maint print msymbols".
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lappend lib_opts "additional_flags=-qstatsym"
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}
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if { [gdb_compile_shlib $lib1src $lib1_sl $lib_opts] != ""} {
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untested "Could not build $lib1_sl."
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return -1
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} elseif { [gdb_compile_shlib $lib2src $lib2_sl $lib_opts] != ""} {
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untested "Could not build $lib1_s2."
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return -1
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} elseif { [gdb_compile $srcfile $binfile executable $exec_opts] != ""} {
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untested "Could not build $binfile."
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return -1
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}
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# Start with a fresh gdb.
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gdb_exit
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gdb_start
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load ${workdir}/shreloc
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gdb_load_shlibs $lib1_sl $lib2_sl
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# Load up the shared objects
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if ![runto_main] then {
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fail "Can't run to main"
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return 0
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}
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proc get_var_address { var } {
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global gdb_prompt hex
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send_gdb "print &${var}\n"
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# Match output like:
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# $1 = (int *) 0x0
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# $5 = (int (*)()) 0
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# $6 = (int (*)()) 0x24 <function_bar>
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gdb_expect {
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-re "\\\$\[0-9\]+ = \\(.*\\) (0|$hex)( <${var}>)?\[\r\n\]+${gdb_prompt} $"
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{
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pass "get address of ${var}"
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if { $expect_out(1,string) == "0" } {
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return "0x0"
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} else {
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return $expect_out(1,string)
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}
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}
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-re "${gdb_prompt} $"
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{ fail "get address of ${var} (unknown output)" }
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timeout
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{ fail "get address of ${var} (timeout)" }
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}
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return ""
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}
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#
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# Check debugging symbol relocations
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#
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# Check extern function for relocation
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set fn_1_addr [get_var_address fn_1]
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set fn_2_addr [get_var_address fn_2]
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if { "${fn_1_addr}" == "${fn_2_addr}" } {
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fail "relocated extern functions have different addresses"
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} else {
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pass "relocated extern functions have different addresses"
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}
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# Check extern var for relocation
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set extern_var_1_addr [get_var_address extern_var_1]
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set extern_var_2_addr [get_var_address extern_var_2]
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if { "${extern_var_1_addr}" == "${extern_var_2_addr}" } {
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fail "relocated extern variables have different addresses"
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} else {
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pass "relocated extern variables have different addresses"
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}
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# Check static var for relocation
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set static_var_1_addr [get_var_address static_var_1]
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set static_var_2_addr [get_var_address static_var_2]
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if { "${static_var_1_addr}" == "${static_var_2_addr}" } {
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fail "relocated static variables have different addresses"
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} else {
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pass "relocated static variables have different addresses"
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}
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#
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# Check minimal symbol relocations
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#
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proc send_gdb_discard { command } {
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# Send a command to gdb and discard output up to the next prompt
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global gdb_prompt
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send_gdb "${command}\n"
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# Discard output
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gdb_expect {
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-re ".*\[\r\n]+${gdb_prompt} $" {
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return 1
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}
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timeout {
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fail "{$command} (timeout)"
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return 0
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}
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}
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}
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proc get_msym_addrs { var msymfile } {
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# Extract the list of values for symbols matching var in the
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# minimal symbol output file
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global gdb_prompt hex
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set result ""
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send_gdb "shell grep -E \" ${var}(\[ \t\]+.*)?\$\" ${msymfile}\n"
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while 1 {
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gdb_expect {
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-re "\[\[\]\[ 0-9\]+\] . (${hex}) ${var}(\[ \t\]+\[^\r\n\]*)?\[\r\n\]+" {
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set result [concat $result $expect_out(1,string)]
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}
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-re "$gdb_prompt $" {
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pass "get_msym_addrs ${var}"
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return "${result}"
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}
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-re "\[^\r\n\]*\[\r\n\]+" {
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# Skip
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}
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timeout {
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fail "get_msym_addrs ${var} (timeout)"
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return -1
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}
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}
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}
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}
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proc check_same {var msymfile} {
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# Check that the minimal symbol values matching var are the same
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set len [llength [lsort -unique [get_msym_addrs "${var}" "${msymfile}"]]]
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if { $len == 1 } {
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return 1
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} else {
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return 0
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}
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}
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proc check_different {var msymfile} {
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# Check that the minimal symbol values matching var are different
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set addr_list [lsort [get_msym_addrs "${var}" "${msymfile}"]]
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set prev ""
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if { [llength ${addr_list}] < 2 } {
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return 0
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}
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foreach addr ${addr_list} {
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if { ${prev} == ${addr} } {
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return 0
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}
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set prev ${addr}
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}
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return 1
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}
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set msymfile "${workdir}/shreloc.txt"
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if [send_gdb_discard "maint print msymbols ${msymfile}"] {
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if {[check_different "static_var_\[12\]" "${msymfile}"]} {
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pass "(msymbol) relocated static vars have different addresses"
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} else {
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fail "(msymbol) relocated static vars have different addresses"
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}
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if {[check_different "extern_var_\[12\]" "${msymfile}"]} {
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pass "(msymbol) relocated extern vars have different addresses"
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} else {
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fail "(msymbol) relocated extern vars have different addresses"
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}
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if {[check_different "fn_\[12\]" "${msymfile}"]} {
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pass "(msymbol) relocated functions have different addresses"
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} else {
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fail "(msymbol) relocated functions have different addresses"
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}
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}
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if {([istarget "*pc-cygwin"] || [istarget "*pc-mingw32"]) } {
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#
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# We know the names of some absolute symbols included in the
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# portable-executable (DLL) format. Check that they didn't get
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# relocated.
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#
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# A better approach would be include absolute symbols via the assembler.
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#
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if {[check_same "_minor_os_version__" "${msymfile}"]} {
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pass "Absolute symbols not relocated"
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} else {
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fail "Absolute symbols not relocated"
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}
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}
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