ld/testsuite/ld-scripts/crossref.exp

   1 # Test NOCROSSREFS in a linker script.
   2 # By Ian Lance Taylor, Cygnus Support.
   3 #   Copyright (C) 2000-2016 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 { ![is_remote host] && [which $CC] == 0 } {
  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 global PLT_CFLAGS
  46 set old_CC "$CC"
  47 set CC "$CC $PLT_CFLAGS"
  48
  49 # Xtensa targets currently default to putting literal values in a separate
  50 # section and that requires linker script support, so put literals in text.
  51 if [istarget xtensa*-*-*] {
  52     set CFLAGS "$CFLAGS -mtext-section-literals"
  53 }
  54
  55 # If we have a compiler that doesn't use/reference dot-symbols, then
  56 # calls to functions reference the .opd section function descriptor.
  57 # This makes NOCROSSREFS rather useless on powerpc64.
  58 if [istarget powerpc64-*-*] {
  59     set CFLAGS "$CFLAGS -mcall-aixdesc"
  60 }
  61
  62 # Prevent the use of the MeP's small data area which references a symbol
  63 # called __sdabase which will not be defined by our test linker scripts.
  64 if [istarget mep*-*-elf] {
  65     set CFLAGS "-mtiny=0"
  66 }
  67
  68 # The .dsbt section and __c6xabi_DSBT_BASE are not defined in our test
  69 # linker scripts.
  70 if [istarget tic6x*-*-*] {
  71     set CFLAGS "-mno-dsbt -msdata=none"
  72 }
  73
  74 if { ![ld_compile $CC "$srcdir/$subdir/cross1.c" tmpdir/cross1.o] \
  75      || ![ld_compile $CC "$srcdir/$subdir/cross2.c" tmpdir/cross2.o] } {
  76     unresolved $test1
  77     unresolved $test2
  78     set CFLAGS "$old_CFLAGS"
  79     set CC "$old_CC"
  80     return
  81 }
  82
  83 set flags [big_or_little_endian]
  84
  85 if [istarget sh64*-*-elf] {
  86     # This is what gcc passes to ld by default.
  87     set flags "-mshelf32"
  88 }
  89
  90 # arc-elf32 requires the symbol __SDATA_BEGIN__ to always be present.
  91 if [istarget arc*-*-elf32] {
  92     set flags "$flags --defsym=__SDATA_BEGIN__=0"
  93 }
  94
  95 # IA64 has both ordered and unordered sections in an input file.
  96 setup_xfail ia64-*-*
  97
  98 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross1 -T $srcdir/$subdir/cross1.t tmpdir/cross1.o tmpdir/cross2.o"]
  99
 100 set exec_output [prune_warnings $exec_output]
 101
 102 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 103
 104 if [string match "" $exec_output] then {
 105     fail $test1
 106 } else {
 107     verbose -log "$exec_output"
 108     if [regexp "prohibited cross reference from .* to `.*foo' in" $exec_output] {
 109         pass $test1
 110     } else {
 111         fail $test1
 112     }
 113 }
 114
 115 # Check cross references within a single object.
 116
 117 if { ![ld_compile $CC "$srcdir/$subdir/cross3.c" tmpdir/cross3.o] } {
 118     unresolved $test2
 119     set CFLAGS "$old_CFLAGS"
 120     set CC "$old_CC"
 121     return
 122 }
 123
 124 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross2 -T $srcdir/$subdir/cross2.t tmpdir/cross3.o"]
 125 set exec_output [prune_warnings $exec_output]
 126
 127 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 128
 129 if [string match "" $exec_output] then {
 130     fail $test2
 131 } else {
 132     verbose -log "$exec_output"
 133     if [regexp "prohibited cross reference from .* to `.*' in" $exec_output] {
 134         pass $test2
 135     } else {
 136         fail $test2
 137     }
 138 }
 139
 140 # Check cross references for ld -r
 141
 142 if { ![ld_compile $CC "$srcdir/$subdir/cross4.c" tmpdir/cross4.o] } {
 143     unresolved $test3
 144     set CFLAGS "$old_CFLAGS"
 145     set CC "$old_CC"
 146     return
 147 }
 148
 149 if ![ld_relocate $ld tmpdir/cross3-partial.o "tmpdir/cross1.o tmpdir/cross4.o"] {
 150     unresolved $test3
 151     set CFLAGS "$old_CFLAGS"
 152     set CC "$old_CC"
 153     return
 154 }
 155
 156 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross3 -T $srcdir/$subdir/cross3.t tmpdir/cross3-partial.o tmpdir/cross2.o"]
 157
 158 set exec_output [prune_warnings $exec_output]
 159
 160 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 161
 162 if [string match "" $exec_output] then {
 163     pass $test3
 164 } else {
 165     verbose -log "$exec_output"
 166     fail $test3
 167 }
 168
 169 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross4 -T $srcdir/$subdir/cross4.t tmpdir/cross4.o"]
 170 set exec_output [prune_warnings $exec_output]
 171
 172 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 173
 174 if [string match "" $exec_output] then {
 175     pass $test4
 176 } else {
 177     verbose -log "$exec_output"
 178     fail $test4
 179 }
 180
 181 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross5 -T $srcdir/$subdir/cross5.t tmpdir/cross4.o"]
 182 set exec_output [prune_warnings $exec_output]
 183
 184 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 185
 186 if [string match "" $exec_output] then {
 187     fail $test5
 188 } else {
 189     verbose -log "$exec_output"
 190     if [regexp "prohibited cross reference from .* to `.*' in" $exec_output] {
 191         pass $test5
 192     } else {
 193         fail $test5
 194     }
 195 }
 196
 197 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross6 -T $srcdir/$subdir/cross6.t tmpdir/cross3.o"]
 198 set exec_output [prune_warnings $exec_output]
 199
 200 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 201
 202 if [string match "" $exec_output] then {
 203     pass $test6
 204 } else {
 205     verbose -log "$exec_output"
 206     fail $test6
 207 }
 208
 209 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross7 -T $srcdir/$subdir/cross7.t tmpdir/cross3.o"]
 210 set exec_output [prune_warnings $exec_output]
 211
 212 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 213
 214 if [string match "" $exec_output] then {
 215     fail $test7
 216 } else {
 217     verbose -log "$exec_output"
 218     if [regexp "prohibited cross reference from .* to `.*' in" $exec_output] {
 219         pass $test7
 220     } else {
 221         fail $test7
 222     }
 223 }
 224
 225 set CFLAGS "$old_CFLAGS"
 226 set CC "$old_CC"