ld/testsuite/ld-selective/selective.exp

   1 # Expect script for LD selective linking tests
   2 #   Copyright (C) 1998-2021 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 $NOSANITIZE_CFLAGS $NOLTO_CFLAGS"
  50 set cxxflags "-fno-exceptions -fno-rtti $NOSANITIZE_CFLAGS $NOLTO_CFLAGS"
  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 avr-*-*] {
  61     # Make .text start at a non-zero address, as some tests expect
  62     # valid symbols to have non-zero values.
  63     set ldflags "--section-start=.text=0x2 $ldflags"
  64 }
  65
  66 # If we don't have g++ for the target, mark all tests as untested.
  67 if { ![is_remote host] && [which $CXX] == 0 } {
  68     foreach testitem $seltests {
  69         untested "[lindex $testitem 0]"
  70     }
  71     return
  72 }
  73
  74 foreach testitem $seltests {
  75     set testname [lindex $testitem 0]
  76     set testtype [lindex $testitem 1]
  77     set testfile [lindex $testitem 2]
  78     set objfile "tmpdir/[file rootname $testfile].o"
  79     set ldfile "tmpdir/[file rootname $testfile].x"
  80     set failed 0
  81
  82     set ldargs [lindex $testitem 3]
  83     set mustsyms [lindex $testitem 4]
  84     set mustnotsyms [lindex $testitem 5]
  85     set xfails [lindex $testitem 6]
  86
  87     foreach xfail_target $xfails {
  88         setup_xfail $xfail_target
  89     }
  90
  91     # It's either C or C++ at the moment.
  92     if { $testtype == "C++" } {
  93         set compiler "$CXX"
  94         # Starting with 3.4.0, -fvtable-gc is no longer supported and thus
  95         # the functionality we try to test for cannot be expected to work.
  96         set version [remote_exec host "$CXX -dumpversion"]
  97         set version [lindex $version 1]
  98         if { [regexp "^(\[1-9\]\[0-9\]+|\[4-9\]|3.(\[1-9\]\[0-9\]+))\\." $version] \
  99              || [regexp "^(\[1-9\]\[0-9\]+|\[4-9\])" $version] } {
 100             set testflags "$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_link $ld $ldfile "$ldflags [join $ldargs] $objfile"] {
 149         fail $testname
 150         continue
 151     }
 152
 153     if ![ld_nm $nm --demangle $ldfile] {
 154         fail $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 }