ld/testsuite/ld-scripts/crossref.exp

   1 # Test NOCROSSREFS in a linker script.
   2 # By Ian Lance Taylor, Cygnus Support.
   3 #   Copyright (C) 2000-2023 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 # Pass -fplt to CC since -fno-plt doesn't work with NOCROSSREFS tests.
  42 # Also add $NOPIE_CFLAGS since PIE doesn't work NOCROSSREFS tests.
  43 set old_CFLAGS "$CFLAGS_FOR_TARGET"
  44 append CFLAGS_FOR_TARGET " $PLT_CFLAGS $NOPIE_CFLAGS"
  45
  46 # Xtensa targets currently default to putting literal values in a separate
  47 # section and that requires linker script support, so put literals in text.
  48 if [istarget xtensa*-*-*] {
  49     append CFLAGS_FOR_TARGET " -mtext-section-literals"
  50 }
  51
  52 # Prevent the use of the MeP's small data area which references a symbol
  53 # called __sdabase which will not be defined by our test linker scripts.
  54 if [istarget mep*-*-elf] {
  55     append CFLAGS_FOR_TARGET " -mtiny=0"
  56 }
  57
  58 # The .dsbt section and __c6xabi_DSBT_BASE are not defined in our test
  59 # linker scripts.
  60 if [istarget tic6x*-*-*] {
  61     append CFLAGS_FOR_TARGET " -mno-dsbt -msdata=none"
  62 }
  63
  64 if { ![ld_compile "$CC_FOR_TARGET $NOSANITIZE_CFLAGS $NOLTO_CFLAGS" "$srcdir/$subdir/cross1.c" tmpdir/cross1.o] \
  65      || ![ld_compile "$CC_FOR_TARGET $NOSANITIZE_CFLAGS $NOLTO_CFLAGS" "$srcdir/$subdir/cross2.c" tmpdir/cross2.o] } {
  66     unsupported $test1
  67     unsupported $test2
  68     set CFLAGS_FOR_TARGET "$old_CFLAGS"
  69     return
  70 }
  71
  72 set flags [big_or_little_endian]
  73
  74 # arc-elf32 requires the symbol __SDATA_BEGIN__ to always be present.
  75 if [istarget arc*-*-elf32] {
  76     append flags " --defsym __SDATA_BEGIN__=0"
  77 }
  78
  79 if [is_pecoff_format] {
  80     append flags " --image-base 0"
  81 }
  82
  83 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross1 -T $srcdir/$subdir/cross1.t tmpdir/cross1.o tmpdir/cross2.o --no-error-rwx-segments"]
  84
  85 set exec_output [prune_warnings $exec_output]
  86
  87 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
  88
  89 if [string match "" $exec_output] then {
  90     fail $test1
  91 } else {
  92     verbose -log "$exec_output"
  93     if [regexp "prohibited cross reference from .* to `.*foo' in" $exec_output] {
  94         pass $test1
  95     } else {
  96         fail $test1
  97     }
  98 }
  99
 100 # Check cross references within a single object.
 101
 102 if { ![ld_compile "$CC_FOR_TARGET $NOSANITIZE_CFLAGS $NOLTO_CFLAGS" "$srcdir/$subdir/cross3.c" tmpdir/cross3.o] } {
 103     unsupported $test2
 104     set CFLAGS_FOR_TARGET "$old_CFLAGS"
 105     return
 106 }
 107
 108 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross2 -T $srcdir/$subdir/cross2.t tmpdir/cross3.o --no-error-rwx-segments"]
 109 set exec_output [prune_warnings $exec_output]
 110
 111 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 112
 113 if [string match "" $exec_output] then {
 114     fail $test2
 115 } else {
 116     verbose -log "$exec_output"
 117     if [regexp "prohibited cross reference from .* to `.*' in" $exec_output] {
 118         pass $test2
 119     } else {
 120         fail $test2
 121     }
 122 }
 123
 124 # Check cross references for ld -r
 125
 126 if { ![ld_compile "$CC_FOR_TARGET $NOSANITIZE_CFLAGS $NOLTO_CFLAGS" "$srcdir/$subdir/cross4.c" tmpdir/cross4.o] } {
 127     unsupported $test3
 128     set CFLAGS_FOR_TARGET "$old_CFLAGS"
 129     return
 130 }
 131
 132 if ![ld_relocate $ld tmpdir/cross3-partial.o "tmpdir/cross1.o tmpdir/cross4.o"] {
 133     fail $test3
 134     set CFLAGS_FOR_TARGET "$old_CFLAGS"
 135     return
 136 }
 137
 138 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross3 -T $srcdir/$subdir/cross3.t tmpdir/cross3-partial.o tmpdir/cross2.o --no-error-rwx-segments"]
 139
 140 set exec_output [prune_warnings $exec_output]
 141
 142 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 143
 144 if [string match "" $exec_output] then {
 145     pass $test3
 146 } else {
 147     verbose -log "$exec_output"
 148     fail $test3
 149 }
 150
 151 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross4 -T $srcdir/$subdir/cross4.t tmpdir/cross4.o --no-error-rwx-segments"]
 152 set exec_output [prune_warnings $exec_output]
 153
 154 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 155
 156 if [string match "" $exec_output] then {
 157     pass $test4
 158 } else {
 159     verbose -log "$exec_output"
 160     fail $test4
 161 }
 162
 163 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross5 -T $srcdir/$subdir/cross5.t tmpdir/cross4.o --no-error-rwx-segments"]
 164 set exec_output [prune_warnings $exec_output]
 165
 166 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 167
 168 if [string match "" $exec_output] then {
 169     fail $test5
 170 } else {
 171     verbose -log "$exec_output"
 172     if [regexp "prohibited cross reference from .* to `.*' in" $exec_output] {
 173         pass $test5
 174     } else {
 175         fail $test5
 176     }
 177 }
 178
 179 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross6 -T $srcdir/$subdir/cross6.t tmpdir/cross3.o --no-error-rwx-segments"]
 180 set exec_output [prune_warnings $exec_output]
 181
 182 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 183
 184 if [string match "" $exec_output] then {
 185     pass $test6
 186 } else {
 187     verbose -log "$exec_output"
 188     fail $test6
 189 }
 190
 191 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross7 -T $srcdir/$subdir/cross7.t tmpdir/cross3.o --no-error-rwx-segments"]
 192 set exec_output [prune_warnings $exec_output]
 193
 194 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 195
 196 if [string match "" $exec_output] then {
 197     fail $test7
 198 } else {
 199     verbose -log "$exec_output"
 200     if [regexp "prohibited cross reference from .* to `.*' in" $exec_output] {
 201         pass $test7
 202     } else {
 203         fail $test7
 204     }
 205 }
 206
 207 set CFLAGS_FOR_TARGET "$old_CFLAGS"