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# Expect script for LD selective linking tests
# Copyright (C) 1998-2017 Free Software Foundation, Inc.
#
# This file is part of the GNU Binutils.
#
# 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
# MA 02110-1301, USA.
#
# Written by Catherine Moore (clm@cygnus.com)
# Make sure that constructors are handled correctly.
# Only ELF based ports support selective linking
if { ![is_elf_format] || ![check_gc_sections_available] } {
return
}
# List contains test-items with three items followed by four lists:
# 1:name 2:test-type (CC or C++; add as needed) 3:filename 4:ld-flags
# 5:must-have-symbols 6:must-not-have-symbols 7:xfail-targets.
#
# If a must(-not)-have symbol is a list, then that list must have two
# items; the symbol name and a value the symbol must (not) have.
#
# Note: ld_nm trims leading `_' from _start
#
# FIXME: Instead of table, read settings from each source-file.
set seltests {
{selective1 C 1.c {} {} {dropme1 dropme2} {}}
{selective2 C 2.c {} {} {foo} {}}
{selective3 C 2.c {-u foo} {foo} {{foo 0}} {}}
{selective4 C++ 3.cc {} {start a A::foo() B::foo()} {A::bar()} {mips*-*}}
{selective5 C++ 4.cc {} {start a A::bar()} {A::foo() B::foo()} {mips*-*}}
{selective6 C++ 5.cc {} {start a A::bar()}
{A::foo() B::foo() dropme1() dropme2()} {*-*-*}}
}
set cflags "-w -O -ffunction-sections -fdata-sections"
set cxxflags "-fno-exceptions -fno-rtti"
set ldflags "--gc-sections -Bstatic"
if [istarget mips*-*] {
# MIPS16 doesn't support PIC code.
set cflags "-mno-abicalls $cflags"
# MIPS ELF uses __start by default, we override it.
set ldflags "-e _start $ldflags"
}
if [istarget sh64*-*-elf] {
# This is what gcc passes to ld by default, plus switch to the
# "usual" ELF _start (shelf32 normally uses just `start' for COFF
# compatibility)
set ldflags "-e _start -mshelf32 $ldflags"
}
if [istarget avr-*-*] {
# Make .text start at a non-zero address, as some tests expect
# valid symbols to have non-zero values.
set ldflags "--section-start=.text=0x2 $ldflags"
}
# If we don't have g++ for the target, mark all tests as untested.
if { ![is_remote host] && [which $CXX] == 0 } {
foreach testitem $seltests {
untested "[lindex $testitem 0]"
}
return
}
foreach testitem $seltests {
set testname [lindex $testitem 0]
set testtype [lindex $testitem 1]
set testfile [lindex $testitem 2]
set objfile "tmpdir/[file rootname $testfile].o"
set ldfile "tmpdir/[file rootname $testfile].x"
set failed 0
set ldargs [lindex $testitem 3]
set mustsyms [lindex $testitem 4]
set mustnotsyms [lindex $testitem 5]
set xfails [lindex $testitem 6]
foreach xfail_target $xfails {
setup_xfail $xfail_target
}
# It's either C or C++ at the moment.
if { $testtype == "C++" } {
set compiler "$CXX"
# Starting with 3.4.0, -fvtable-gc is no longer supported and thus
# the functionality we try to test for cannot be expected to work.
set version [remote_exec host "$CXX -dumpversion"]
set version [lindex $version 1]
if [regexp "^(\[1-9\]\[0-9\]+|\[4-9\]|3.(\[1-9\]\[0-9\]+|\[4-9\]))\\." $version] {
set testflags "$cflags $cxxflags"
setup_xfail {*-*-*}
} else {
set testflags "$cflags $cxxflags -fvtable-gc"
}
} else {
set testflags "$cflags"
set compiler "$CC"
}
# Note that we do not actually *use* CXX; we just add cxxflags for C++
# tests. It might have been a buglet originally; now I think better
# leave as is.
if { ![ld_compile "$compiler $testflags" $srcdir/$subdir/$testfile $objfile] } {
unresolved $testname
continue
}
# V850 targets need libgcc.a
if [istarget v850*-*-elf] {
set libgcc [remote_exec host "$compiler -print-libgcc-file-name"]
set libgcc [lindex $libgcc 1]
regsub -all "\[\r\n\]" $libgcc "" libgcc
set objfile "$objfile $libgcc"
}
# ARM targets need libgcc.a in THUMB mode so that __call_via_r3 is provided
if {[istarget arm-*-*]} {
set libgcc [remote_exec host "$compiler -print-libgcc-file-name"]
set libgcc [lindex $libgcc 1]
regsub -all "\[\r\n\]" $libgcc "" libgcc
set objfile "$objfile $libgcc"
}
# HPPA linux targets need libgcc.a for millicode routines ($$dyncall).
if [istarget hppa*-*-linux*] {
set libgcc [remote_exec host "$compiler -print-libgcc-file-name"]
set libgcc [lindex $libgcc 1]
regsub -all "\[\r\n\]" $libgcc "" libgcc
set objfile "$objfile $libgcc"
}
# m6811/m6812 code has references to soft registers.
if {[istarget m6811-*-*] || [istarget m6812-*-*] || [istarget m68hc1*-*-*]} {
set objfile "$objfile --defsym _.frame=0 --defsym _.d1=0"
set objfile "$objfile --defsym _.d2=0"
}
if ![ld_simple_link $ld $ldfile "$ldflags [join $ldargs] $objfile"] {
fail $testname
continue
}
if ![ld_nm $nm --demangle $ldfile] {
unresolved $testname
continue
}
# Must make V2 demangled names look like V3
foreach nm_output_key [array names nm_output] {
if [regsub \\(void\\) $nm_output_key () new_nm_output_key] {
set nm_output($new_nm_output_key) nm_output($nm_output_key)
}
}
# Check each mandated symbol and optionally mandated values.
foreach mustsym $mustsyms {
if { [llength [concat $mustsym]] == 1 } {
if { ![info exists nm_output($mustsym)] } {
verbose -log "$testname: missing $mustsym"
fail $testname
set failed 1
break
}
} {
set mustsymname [lindex $mustsym 0]
set mustsymvalue [lindex $mustsym 1]
if { ![info exists nm_output($mustsymname)] } {
verbose -log "$testname: missing $mustsymname"
fail $testname
set failed 1
break
} {
if { $nm_output($mustsymname) != $mustsymvalue } {
verbose -log "$testname: $mustsymname != $mustsymvalue"
verbose -log "is instead $nm_output($mustsymname)"
fail $testname
set failed 1
break
}
}
}
}
if { $failed != 0 } {
continue
}
# Check each unwanted symbol, or that symbols do not have specific
# values.
foreach mustnotsym $mustnotsyms {
if { [llength [concat $mustnotsym]] == 1 } {
if { [info exists nm_output($mustnotsym)] } {
verbose -log "$testname: $mustnotsym == $nm_output($mustnotsym)"
fail $testname
set failed 1
break
}
} {
set mustnotsymname [lindex $mustnotsym 0]
set mustnotsymvalue [lindex $mustnotsym 1]
if { [info exists nm_output($mustnotsymname)] \
&& $nm_output($mustnotsymname) == $mustnotsymvalue} {
verbose -log "$testname: $mustnotsymname == $mustnotsymvalue"
fail $testname
set failed 1
break
}
}
}
if { $failed == 0 } {
pass $testname
}
}
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