ld/testsuite/ld-scripts/crossref.exp

   1 # Test NOCROSSREFS in a linker script.
   2 # By Ian Lance Taylor, Cygnus Support.
   3 #   Copyright (C) 2000-2021 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 $test7
  38     return
  39 }
  40
  41 set old_CFLAGS "$CFLAGS"
  42
  43 # Pass -fplt to CC since -fno-plt doesn't work with NOCROSSREFS tests.
  44 # Also add $NOPIE_CFLAGS since PIE doesn't work NOCROSSREFS tests.
  45 set old_CC "$CC"
  46 set CC "$CC $PLT_CFLAGS $NOPIE_CFLAGS"
  47
  48 # Xtensa targets currently default to putting literal values in a separate
  49 # section and that requires linker script support, so put literals in text.
  50 if [istarget xtensa*-*-*] {
  51     set CFLAGS "$CFLAGS -mtext-section-literals"
  52 }
  53
  54 # Prevent the use of the MeP's small data area which references a symbol
  55 # called __sdabase which will not be defined by our test linker scripts.
  56 if [istarget mep*-*-elf] {
  57     set CFLAGS "-mtiny=0"
  58 }
  59
  60 # The .dsbt section and __c6xabi_DSBT_BASE are not defined in our test
  61 # linker scripts.
  62 if [istarget tic6x*-*-*] {
  63     set CFLAGS "-mno-dsbt -msdata=none"
  64 }
  65
  66 if { ![ld_compile "$CC $NOSANITIZE_CFLAGS $NOLTO_CFLAGS" "$srcdir/$subdir/cross1.c" tmpdir/cross1.o] \
  67      || ![ld_compile "$CC $NOSANITIZE_CFLAGS $NOLTO_CFLAGS" "$srcdir/$subdir/cross2.c" tmpdir/cross2.o] } {
  68     unresolved $test1
  69     unresolved $test2
  70     set CFLAGS "$old_CFLAGS"
  71     set CC "$old_CC"
  72     return
  73 }
  74
  75 set flags [big_or_little_endian]
  76
  77 # arc-elf32 requires the symbol __SDATA_BEGIN__ to always be present.
  78 if [istarget arc*-*-elf32] {
  79     set flags "$flags --defsym=__SDATA_BEGIN__=0"
  80 }
  81
  82 # IA64 has both ordered and unordered sections in an input file.
  83 setup_xfail ia64-*-*
  84
  85 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross1 -T $srcdir/$subdir/cross1.t tmpdir/cross1.o tmpdir/cross2.o"]
  86
  87 set exec_output [prune_warnings $exec_output]
  88
  89 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
  90
  91 if [string match "" $exec_output] then {
  92     fail $test1
  93 } else {
  94     verbose -log "$exec_output"
  95     if [regexp "prohibited cross reference from .* to `.*foo' in" $exec_output] {
  96         pass $test1
  97     } else {
  98         fail $test1
  99     }
 100 }
 101
 102 # Check cross references within a single object.
 103
 104 if { ![ld_compile "$CC $NOSANITIZE_CFLAGS $NOLTO_CFLAGS" "$srcdir/$subdir/cross3.c" tmpdir/cross3.o] } {
 105     unresolved $test2
 106     set CFLAGS "$old_CFLAGS"
 107     set CC "$old_CC"
 108     return
 109 }
 110
 111 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross2 -T $srcdir/$subdir/cross2.t tmpdir/cross3.o"]
 112 set exec_output [prune_warnings $exec_output]
 113
 114 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 115
 116 if [string match "" $exec_output] then {
 117     fail $test2
 118 } else {
 119     verbose -log "$exec_output"
 120     if [regexp "prohibited cross reference from .* to `.*' in" $exec_output] {
 121         pass $test2
 122     } else {
 123         fail $test2
 124     }
 125 }
 126
 127 # Check cross references for ld -r
 128
 129 if { ![ld_compile "$CC $NOSANITIZE_CFLAGS $NOLTO_CFLAGS" "$srcdir/$subdir/cross4.c" tmpdir/cross4.o] } {
 130     unresolved $test3
 131     set CFLAGS "$old_CFLAGS"
 132     set CC "$old_CC"
 133     return
 134 }
 135
 136 if ![ld_relocate $ld tmpdir/cross3-partial.o "tmpdir/cross1.o tmpdir/cross4.o"] {
 137     unresolved $test3
 138     set CFLAGS "$old_CFLAGS"
 139     set CC "$old_CC"
 140     return
 141 }
 142
 143 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross3 -T $srcdir/$subdir/cross3.t tmpdir/cross3-partial.o tmpdir/cross2.o"]
 144
 145 set exec_output [prune_warnings $exec_output]
 146
 147 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 148
 149 if [string match "" $exec_output] then {
 150     pass $test3
 151 } else {
 152     verbose -log "$exec_output"
 153     fail $test3
 154 }
 155
 156 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross4 -T $srcdir/$subdir/cross4.t tmpdir/cross4.o"]
 157 set exec_output [prune_warnings $exec_output]
 158
 159 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 160
 161 if [string match "" $exec_output] then {
 162     pass $test4
 163 } else {
 164     verbose -log "$exec_output"
 165     fail $test4
 166 }
 167
 168 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross5 -T $srcdir/$subdir/cross5.t tmpdir/cross4.o"]
 169 set exec_output [prune_warnings $exec_output]
 170
 171 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 172
 173 if [string match "" $exec_output] then {
 174     fail $test5
 175 } else {
 176     verbose -log "$exec_output"
 177     if [regexp "prohibited cross reference from .* to `.*' in" $exec_output] {
 178         pass $test5
 179     } else {
 180         fail $test5
 181     }
 182 }
 183
 184 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross6 -T $srcdir/$subdir/cross6.t tmpdir/cross3.o"]
 185 set exec_output [prune_warnings $exec_output]
 186
 187 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 188
 189 if [string match "" $exec_output] then {
 190     pass $test6
 191 } else {
 192     verbose -log "$exec_output"
 193     fail $test6
 194 }
 195
 196 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross7 -T $srcdir/$subdir/cross7.t tmpdir/cross3.o"]
 197 set exec_output [prune_warnings $exec_output]
 198
 199 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 200
 201 if [string match "" $exec_output] then {
 202     fail $test7
 203 } else {
 204     verbose -log "$exec_output"
 205     if [regexp "prohibited cross reference from .* to `.*' in" $exec_output] {
 206         pass $test7
 207     } else {
 208         fail $test7
 209     }
 210 }
 211
 212 set CFLAGS "$old_CFLAGS"
 213 set CC "$old_CC"