1 # Expect script for LD selective linking tests 2 # Copyright (C) 1998-2014 Free Software Foundation, Inc. 3 # 4 # This file is part of the GNU Binutils. 5 # 6 # This program is free software; you can redistribute it and/or modify 7 # it under the terms of the GNU General Public License as published by 8 # the Free Software Foundation; either version 3 of the License, or 9 # (at your option) any later version. 10 # 11 # This program is distributed in the hope that it will be useful, 12 # but WITHOUT ANY WARRANTY; without even the implied warranty of 13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 # GNU General Public License for more details. 15 # 16 # You should have received a copy of the GNU General Public License 17 # along with this program; if not, write to the Free Software 18 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 19 # MA 02110-1301, USA. 20 # 21 # Written by Catherine Moore (clm (at) cygnus.com) 22 # Make sure that constructors are handled correctly. 23 24 # Only ELF based ports support selective linking 25 if { ![is_elf_format] || ![check_gc_sections_available] } { 26 return 27 } 28 29 # List contains test-items with three items followed by four lists: 30 # 1:name 2:test-type (CC or C++; add as needed) 3:filename 4:ld-flags 31 # 5:must-have-symbols 6:must-not-have-symbols 7:xfail-targets. 32 # 33 # If a must(-not)-have symbol is a list, then that list must have two 34 # items; the symbol name and a value the symbol must (not) have. 35 # 36 # Note: ld_nm trims leading `_' from _start 37 # 38 # FIXME: Instead of table, read settings from each source-file. 39 set seltests { 40 {selective1 C 1.c {} {} {dropme1 dropme2} {}} 41 {selective2 C 2.c {} {} {foo} {}} 42 {selective3 C 2.c {-u foo} {foo} {{foo 0}} {}} 43 {selective4 C++ 3.cc {} {start a A::foo() B::foo()} {A::bar()} {mips*-*}} 44 {selective5 C++ 4.cc {} {start a A::bar()} {A::foo() B::foo()} {mips*-*}} 45 {selective6 C++ 5.cc {} {start a A::bar()} 46 {A::foo() B::foo() dropme1() dropme2()} {*-*-*}} 47 } 48 49 set cflags "-w -O -ffunction-sections -fdata-sections" 50 set cxxflags "-fno-exceptions -fno-rtti" 51 set ldflags "--gc-sections -Bstatic" 52 53 if [istarget mips*-*] { 54 # MIPS16 doesn't support PIC code. 55 set cflags "-mno-abicalls $cflags" 56 # MIPS ELF uses __start by default, we override it. 57 set ldflags "-e _start $ldflags" 58 } 59 60 if [istarget sh64*-*-elf] { 61 # This is what gcc passes to ld by default, plus switch to the 62 # "usual" ELF _start (shelf32 normally uses just `start' for COFF 63 # compatibility) 64 set ldflags "-e _start -mshelf32 $ldflags" 65 } 66 67 # If we don't have g++ for the target, mark all tests as untested. 68 if { ![is_remote host] && [which $CXX] == 0 } { 69 foreach testitem $seltests { 70 untested "[lindex $testitem 0]" 71 } 72 return 73 } 74 75 foreach testitem $seltests { 76 set testname [lindex $testitem 0] 77 set testtype [lindex $testitem 1] 78 set testfile [lindex $testitem 2] 79 set objfile "tmpdir/[file rootname $testfile].o" 80 set ldfile "tmpdir/[file rootname $testfile].x" 81 set failed 0 82 83 set ldargs [lindex $testitem 3] 84 set mustsyms [lindex $testitem 4] 85 set mustnotsyms [lindex $testitem 5] 86 set xfails [lindex $testitem 6] 87 88 foreach xfail_target $xfails { 89 setup_xfail $xfail_target 90 } 91 92 # It's either C or C++ at the moment. 93 if { $testtype == "C++" } { 94 set compiler "$CXX" 95 # Starting with 3.4.0, -fvtable-gc is no longer supported and thus 96 # the functionality we try to test for cannot be expected to work. 97 set version [remote_exec host "$CXX -dumpversion"] 98 set version [lindex $version 1] 99 if [regexp "^(\[1-9\]\[0-9\]+|\[4-9\]|3.(\[1-9\]\[0-9\]+|\[4-9\]))\\." $version] { 100 set testflags "$cflags $cxxflags" 101 setup_xfail {*-*-*} 102 } else { 103 set testflags "$cflags $cxxflags -fvtable-gc" 104 } 105 } else { 106 set testflags "$cflags" 107 set compiler "$CC" 108 } 109 110 # Note that we do not actually *use* CXX; we just add cxxflags for C++ 111 # tests. It might have been a buglet originally; now I think better 112 # leave as is. 113 if { ![ld_compile "$compiler $testflags" $srcdir/$subdir/$testfile $objfile] } { 114 unresolved $testname 115 continue 116 } 117 118 # V850 targets need libgcc.a 119 if [istarget v850*-*-elf] { 120 set libgcc [remote_exec host "$compiler -print-libgcc-file-name"] 121 set libgcc [lindex $libgcc 1] 122 regsub -all "\[\r\n\]" $libgcc "" libgcc 123 set objfile "$objfile $libgcc" 124 } 125 126 # ARM targets need libgcc.a in THUMB mode so that __call_via_r3 is provided 127 if {[istarget arm-*-*]} { 128 set libgcc [remote_exec host "$compiler -print-libgcc-file-name"] 129 set libgcc [lindex $libgcc 1] 130 regsub -all "\[\r\n\]" $libgcc "" libgcc 131 set objfile "$objfile $libgcc" 132 } 133 134 # HPPA linux targets need libgcc.a for millicode routines ($$dyncall). 135 if [istarget hppa*-*-linux*] { 136 set libgcc [remote_exec host "$compiler -print-libgcc-file-name"] 137 set libgcc [lindex $libgcc 1] 138 regsub -all "\[\r\n\]" $libgcc "" libgcc 139 set objfile "$objfile $libgcc" 140 } 141 142 # m6811/m6812 code has references to soft registers. 143 if {[istarget m6811-*-*] || [istarget m6812-*-*] || [istarget m68hc1*-*-*]} { 144 set objfile "$objfile --defsym _.frame=0 --defsym _.d1=0" 145 set objfile "$objfile --defsym _.d2=0" 146 } 147 148 if ![ld_simple_link $ld $ldfile "$ldflags [join $ldargs] $objfile"] { 149 fail $testname 150 continue 151 } 152 153 if ![ld_nm $nm --demangle $ldfile] { 154 unresolved $testname 155 continue 156 } 157 158 # Must make V2 demangled names look like V3 159 foreach nm_output_key [array names nm_output] { 160 if [regsub \\(void\\) $nm_output_key () new_nm_output_key] { 161 set nm_output($new_nm_output_key) nm_output($nm_output_key) 162 } 163 } 164 165 # Check each mandated symbol and optionally mandated values. 166 foreach mustsym $mustsyms { 167 if { [llength [concat $mustsym]] == 1 } { 168 if { ![info exists nm_output($mustsym)] } { 169 verbose -log "$testname: missing $mustsym" 170 fail $testname 171 set failed 1 172 break 173 } 174 } { 175 set mustsymname [lindex $mustsym 0] 176 set mustsymvalue [lindex $mustsym 1] 177 if { ![info exists nm_output($mustsymname)] } { 178 verbose -log "$testname: missing $mustsymname" 179 fail $testname 180 set failed 1 181 break 182 } { 183 if { $nm_output($mustsymname) != $mustsymvalue } { 184 verbose -log "$testname: $mustsymname != $mustsymvalue" 185 verbose -log "is instead $nm_output($mustsymname)" 186 fail $testname 187 set failed 1 188 break 189 } 190 } 191 } 192 } 193 194 if { $failed != 0 } { 195 continue 196 } 197 198 # Check each unwanted symbol, or that symbols do not have specific 199 # values. 200 foreach mustnotsym $mustnotsyms { 201 if { [llength [concat $mustnotsym]] == 1 } { 202 if { [info exists nm_output($mustnotsym)] } { 203 verbose -log "$testname: $mustnotsym == $nm_output($mustnotsym)" 204 fail $testname 205 set failed 1 206 break 207 } 208 } { 209 set mustnotsymname [lindex $mustnotsym 0] 210 set mustnotsymvalue [lindex $mustnotsym 1] 211 if { [info exists nm_output($mustnotsymname)] \ 212 && $nm_output($mustnotsymname) == $mustnotsymvalue} { 213 verbose -log "$testname: $mustnotsymname == $mustnotsymvalue" 214 fail $testname 215 set failed 1 216 break 217 } 218 } 219 } 220 221 if { $failed == 0 } { 222 pass $testname 223 } 224 } 225
