ld/testsuite/ld-selective/selective.exp

   1 # Expect script for LD selective linking tests
   2 #   Copyright (C) 1998-2017 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@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 [istarget avr-*-*] {
  68     # Make .text start at a non-zero address, as some tests expect
  69     # valid symbols to have non-zero values.
  70     set ldflags "--section-start=.text=0x2 $ldflags"
  71 }
  72
  73 # If we don't have g++ for the target, mark all tests as untested.
  74 if { ![is_remote host] && [which $CXX] == 0 } {
  75     foreach testitem $seltests {
  76         untested "[lindex $testitem 0]"
  77     }
  78     return
  79 }
  80
  81 foreach testitem $seltests {
  82     set testname [lindex $testitem 0]
  83     set testtype [lindex $testitem 1]
  84     set testfile [lindex $testitem 2]
  85     set objfile "tmpdir/[file rootname $testfile].o"
  86     set ldfile "tmpdir/[file rootname $testfile].x"
  87     set failed 0
  88
  89     set ldargs [lindex $testitem 3]
  90     set mustsyms [lindex $testitem 4]
  91     set mustnotsyms [lindex $testitem 5]
  92     set xfails [lindex $testitem 6]
  93
  94     foreach xfail_target $xfails {
  95         setup_xfail $xfail_target
  96     }
  97
  98     # It's either C or C++ at the moment.
  99     if { $testtype == "C++" } {
 100         set compiler "$CXX"
 101         # Starting with 3.4.0, -fvtable-gc is no longer supported and thus
 102         # the functionality we try to test for cannot be expected to work.
 103         set version [remote_exec host "$CXX -dumpversion"]
 104         set version [lindex $version 1]
 105         if [regexp "^(\[1-9\]\[0-9\]+|\[4-9\]|3.(\[1-9\]\[0-9\]+|\[4-9\]))\\." $version] {
 106             set testflags "$cflags $cxxflags"
 107             setup_xfail {*-*-*}
 108         } else {
 109             set testflags "$cflags $cxxflags -fvtable-gc"
 110         }
 111     } else {
 112         set testflags "$cflags"
 113         set compiler "$CC"
 114     }
 115
 116     # Note that we do not actually *use* CXX; we just add cxxflags for C++
 117     # tests.  It might have been a buglet originally; now I think better
 118     # leave as is.
 119     if { ![ld_compile "$compiler $testflags" $srcdir/$subdir/$testfile $objfile] } {
 120         unresolved $testname
 121         continue
 122     }
 123
 124     # V850 targets need libgcc.a
 125     if [istarget v850*-*-elf] {
 126         set libgcc [remote_exec host "$compiler -print-libgcc-file-name"]
 127         set libgcc [lindex $libgcc 1]
 128         regsub -all "\[\r\n\]" $libgcc "" libgcc
 129         set objfile "$objfile $libgcc"
 130     }
 131
 132     # ARM targets need libgcc.a in THUMB mode so that __call_via_r3 is provided
 133     if {[istarget arm-*-*]} {
 134         set libgcc [remote_exec host "$compiler -print-libgcc-file-name"]
 135         set libgcc [lindex $libgcc 1]
 136         regsub -all "\[\r\n\]" $libgcc "" libgcc
 137         set objfile "$objfile $libgcc"
 138     }
 139
 140     # HPPA linux targets need libgcc.a for millicode routines ($$dyncall).
 141     if [istarget hppa*-*-linux*] {
 142         set libgcc [remote_exec host "$compiler -print-libgcc-file-name"]
 143         set libgcc [lindex $libgcc 1]
 144         regsub -all "\[\r\n\]" $libgcc "" libgcc
 145         set objfile "$objfile $libgcc"
 146     }
 147
 148     # m6811/m6812 code has references to soft registers.
 149     if {[istarget m6811-*-*] || [istarget m6812-*-*] || [istarget m68hc1*-*-*]} {
 150         set objfile "$objfile --defsym _.frame=0 --defsym _.d1=0"
 151         set objfile "$objfile --defsym _.d2=0"
 152     }
 153
 154     if ![ld_link $ld $ldfile "$ldflags [join $ldargs] $objfile"] {
 155         fail $testname
 156         continue
 157     }
 158
 159     if ![ld_nm $nm --demangle $ldfile] {
 160         unresolved $testname
 161         continue
 162     }
 163
 164     # Must make V2 demangled names look like V3
 165     foreach nm_output_key [array names nm_output] {
 166         if [regsub \\(void\\) $nm_output_key () new_nm_output_key] {
 167             set nm_output($new_nm_output_key) nm_output($nm_output_key)
 168         }
 169     }
 170
 171     # Check each mandated symbol and optionally mandated values.
 172     foreach mustsym $mustsyms {
 173         if { [llength [concat $mustsym]] == 1 } {
 174             if { ![info exists nm_output($mustsym)] } {
 175                 verbose -log "$testname: missing $mustsym"
 176                 fail $testname
 177                 set failed 1
 178                 break
 179             }
 180         } {
 181             set mustsymname [lindex $mustsym 0]
 182             set mustsymvalue [lindex $mustsym 1]
 183             if { ![info exists nm_output($mustsymname)] } {
 184                 verbose -log "$testname: missing $mustsymname"
 185                 fail $testname
 186                 set failed 1
 187                 break
 188             } {
 189                 if { $nm_output($mustsymname) != $mustsymvalue } {
 190                     verbose -log "$testname: $mustsymname != $mustsymvalue"
 191                     verbose -log "is instead $nm_output($mustsymname)"
 192                     fail $testname
 193                     set failed 1
 194                     break
 195                 }
 196             }
 197         }
 198     }
 199
 200     if { $failed != 0 } {
 201         continue
 202     }
 203
 204     # Check each unwanted symbol, or that symbols do not have specific
 205     # values.
 206     foreach mustnotsym $mustnotsyms {
 207         if { [llength [concat $mustnotsym]] == 1 } {
 208             if { [info exists nm_output($mustnotsym)] } {
 209                 verbose -log "$testname: $mustnotsym == $nm_output($mustnotsym)"
 210                 fail $testname
 211                 set failed 1
 212                 break
 213             }
 214         } {
 215             set mustnotsymname [lindex $mustnotsym 0]
 216             set mustnotsymvalue [lindex $mustnotsym 1]
 217             if { [info exists nm_output($mustnotsymname)] \
 218                     && $nm_output($mustnotsymname) == $mustnotsymvalue} {
 219                 verbose -log "$testname: $mustnotsymname == $mustnotsymvalue"
 220                 fail $testname
 221                 set failed 1
 222                 break
 223             }
 224         }
 225     }
 226
 227     if { $failed == 0 } {
 228         pass $testname
 229     }
 230 }