ld/testsuite/ld-scripts/crossref.exp

   1 # Test NOCROSSREFS in a linker script.
   2 # By Ian Lance Taylor, Cygnus Support.
   3 #   Copyright (C) 2000-2020 Free Software Foundation, Inc.
   4 #
   5 # This file is part of the GNU Binutils.
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program; if not, write to the Free Software
  19 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20 # MA 02110-1301, USA.
  21
  22 set test1 "NOCROSSREFS 1"
  23 set test2 "NOCROSSREFS 2"
  24 set test3 "NOCROSSREFS 3"
  25 set test4 "NOCROSSREFS_TO 1"
  26 set test5 "NOCROSSREFS_TO 2"
  27 set test6 "NOCROSSREFS_TO 3"
  28 set test7 "NOCROSSREFS_TO 4"
  29
  30 if { ![check_compiler_available] } {
  31     untested $test1
  32     untested $test2
  33     untested $test3
  34     untested $test4
  35     untested $test5
  36     untested $test6
  37     untested $test7
  38     return
  39 }
  40
  41 global CFLAGS
  42 set old_CFLAGS "$CFLAGS"
  43
  44 # Pass -fplt to CC since -fno-plt doesn't work with NOCROSSREFS tests.
  45 # Also add $NOPIE_CFLAGS since PIE doesn't work NOCROSSREFS tests.
  46 global PLT_CFLAGS NOPIE_CFLAGS
  47 set old_CC "$CC"
  48 set CC "$CC $PLT_CFLAGS $NOPIE_CFLAGS"
  49
  50 # Xtensa targets currently default to putting literal values in a separate
  51 # section and that requires linker script support, so put literals in text.
  52 if [istarget xtensa*-*-*] {
  53     set CFLAGS "$CFLAGS -mtext-section-literals"
  54 }
  55
  56 # Prevent the use of the MeP's small data area which references a symbol
  57 # called __sdabase which will not be defined by our test linker scripts.
  58 if [istarget mep*-*-elf] {
  59     set CFLAGS "-mtiny=0"
  60 }
  61
  62 # The .dsbt section and __c6xabi_DSBT_BASE are not defined in our test
  63 # linker scripts.
  64 if [istarget tic6x*-*-*] {
  65     set CFLAGS "-mno-dsbt -msdata=none"
  66 }
  67
  68 if { ![ld_compile $CC "$srcdir/$subdir/cross1.c" tmpdir/cross1.o] \
  69      || ![ld_compile $CC "$srcdir/$subdir/cross2.c" tmpdir/cross2.o] } {
  70     unresolved $test1
  71     unresolved $test2
  72     set CFLAGS "$old_CFLAGS"
  73     set CC "$old_CC"
  74     return
  75 }
  76
  77 set flags [big_or_little_endian]
  78
  79 # arc-elf32 requires the symbol __SDATA_BEGIN__ to always be present.
  80 if [istarget arc*-*-elf32] {
  81     set flags "$flags --defsym=__SDATA_BEGIN__=0"
  82 }
  83
  84 # IA64 has both ordered and unordered sections in an input file.
  85 setup_xfail ia64-*-*
  86
  87 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross1 -T $srcdir/$subdir/cross1.t tmpdir/cross1.o tmpdir/cross2.o"]
  88
  89 set exec_output [prune_warnings $exec_output]
  90
  91 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
  92
  93 if [string match "" $exec_output] then {
  94     fail $test1
  95 } else {
  96     verbose -log "$exec_output"
  97     if [regexp "prohibited cross reference from .* to `.*foo' in" $exec_output] {
  98         pass $test1
  99     } else {
 100         fail $test1
 101     }
 102 }
 103
 104 # Check cross references within a single object.
 105
 106 if { ![ld_compile $CC "$srcdir/$subdir/cross3.c" tmpdir/cross3.o] } {
 107     unresolved $test2
 108     set CFLAGS "$old_CFLAGS"
 109     set CC "$old_CC"
 110     return
 111 }
 112
 113 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross2 -T $srcdir/$subdir/cross2.t tmpdir/cross3.o"]
 114 set exec_output [prune_warnings $exec_output]
 115
 116 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 117
 118 if [string match "" $exec_output] then {
 119     fail $test2
 120 } else {
 121     verbose -log "$exec_output"
 122     if [regexp "prohibited cross reference from .* to `.*' in" $exec_output] {
 123         pass $test2
 124     } else {
 125         fail $test2
 126     }
 127 }
 128
 129 # Check cross references for ld -r
 130
 131 if { ![ld_compile $CC "$srcdir/$subdir/cross4.c" tmpdir/cross4.o] } {
 132     unresolved $test3
 133     set CFLAGS "$old_CFLAGS"
 134     set CC "$old_CC"
 135     return
 136 }
 137
 138 if ![ld_relocate $ld tmpdir/cross3-partial.o "tmpdir/cross1.o tmpdir/cross4.o"] {
 139     unresolved $test3
 140     set CFLAGS "$old_CFLAGS"
 141     set CC "$old_CC"
 142     return
 143 }
 144
 145 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross3 -T $srcdir/$subdir/cross3.t tmpdir/cross3-partial.o tmpdir/cross2.o"]
 146
 147 set exec_output [prune_warnings $exec_output]
 148
 149 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 150
 151 if [string match "" $exec_output] then {
 152     pass $test3
 153 } else {
 154     verbose -log "$exec_output"
 155     fail $test3
 156 }
 157
 158 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross4 -T $srcdir/$subdir/cross4.t tmpdir/cross4.o"]
 159 set exec_output [prune_warnings $exec_output]
 160
 161 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 162
 163 if [string match "" $exec_output] then {
 164     pass $test4
 165 } else {
 166     verbose -log "$exec_output"
 167     fail $test4
 168 }
 169
 170 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross5 -T $srcdir/$subdir/cross5.t tmpdir/cross4.o"]
 171 set exec_output [prune_warnings $exec_output]
 172
 173 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 174
 175 if [string match "" $exec_output] then {
 176     fail $test5
 177 } else {
 178     verbose -log "$exec_output"
 179     if [regexp "prohibited cross reference from .* to `.*' in" $exec_output] {
 180         pass $test5
 181     } else {
 182         fail $test5
 183     }
 184 }
 185
 186 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross6 -T $srcdir/$subdir/cross6.t tmpdir/cross3.o"]
 187 set exec_output [prune_warnings $exec_output]
 188
 189 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 190
 191 if [string match "" $exec_output] then {
 192     pass $test6
 193 } else {
 194     verbose -log "$exec_output"
 195     fail $test6
 196 }
 197
 198 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross7 -T $srcdir/$subdir/cross7.t tmpdir/cross3.o"]
 199 set exec_output [prune_warnings $exec_output]
 200
 201 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 202
 203 if [string match "" $exec_output] then {
 204     fail $test7
 205 } else {
 206     verbose -log "$exec_output"
 207     if [regexp "prohibited cross reference from .* to `.*' in" $exec_output] {
 208         pass $test7
 209     } else {
 210         fail $test7
 211     }
 212 }
 213
 214 set CFLAGS "$old_CFLAGS"
 215 set CC "$old_CC"