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
  26 if { ![is_remote host] && [which $CC] == 0 } {
  27     untested $test1
  28     untested $test2
  29     untested $test3
  30     return
  31 }
  32
  33 global CFLAGS
  34 set old_CFLAGS "$CFLAGS"
  35
  36 # Pass -fplt to CC since -fno-plt doesn't work with NOCROSSREFS tests.
  37 global PLT_CFLAGS
  38 set old_CC "$CC"
  39 set CC "$CC $PLT_CFLAGS"
  40
  41 # Xtensa targets currently default to putting literal values in a separate
  42 # section and that requires linker script support, so put literals in text.
  43 if [istarget xtensa*-*-*] {
  44     set CFLAGS "$CFLAGS -mtext-section-literals"
  45 }
  46
  47 # If we have a compiler that doesn't use/reference dot-symbols, then
  48 # calls to functions reference the .opd section function descriptor.
  49 # This makes NOCROSSREFS rather useless on powerpc64.
  50 if [istarget powerpc64-*-*] {
  51     set CFLAGS "$CFLAGS -mcall-aixdesc"
  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 $CC "$srcdir/$subdir/cross1.c" tmpdir/cross1.o] \
  67      || ![ld_compile $CC "$srcdir/$subdir/cross2.c" tmpdir/cross2.o] } {
  68     unresolved $test1
  69     unresolved $test2
  70     set CFLAGS "$old_CFLAGS"
  71     set CC "$old_CC"
  72     return
  73 }
  74
  75 set flags [big_or_little_endian]
  76
  77 if [istarget sh64*-*-elf] {
  78     # This is what gcc passes to ld by default.
  79     set flags "-mshelf32"
  80 }
  81
  82 # arc-elf32 requires the symbol __SDATA_BEGIN__ to always be present.
  83 if [istarget arc*-*-elf32] {
  84     set flags "$flags --defsym=__SDATA_BEGIN__=0"
  85 }
  86
  87 # IA64 has both ordered and unordered sections in an input file.
  88 setup_xfail ia64-*-*
  89
  90 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross1 -T $srcdir/$subdir/cross1.t tmpdir/cross1.o tmpdir/cross2.o"]
  91
  92 set exec_output [prune_warnings $exec_output]
  93
  94 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
  95
  96 if [string match "" $exec_output] then {
  97     fail $test1
  98 } else {
  99     verbose -log "$exec_output"
 100     if [regexp "prohibited cross reference from .* to `.*foo' in" $exec_output] {
 101         pass $test1
 102     } else {
 103         fail $test1
 104     }
 105 }
 106
 107 # Check cross references within a single object.
 108
 109 if { ![ld_compile $CC "$srcdir/$subdir/cross3.c" tmpdir/cross3.o] } {
 110     unresolved $test2
 111     set CFLAGS "$old_CFLAGS"
 112     set CC "$old_CC"
 113     return
 114 }
 115
 116 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross2 -T $srcdir/$subdir/cross2.t tmpdir/cross3.o"]
 117 set exec_output [prune_warnings $exec_output]
 118
 119 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 120
 121 if [string match "" $exec_output] then {
 122     fail $test2
 123 } else {
 124     verbose -log "$exec_output"
 125     if [regexp "prohibited cross reference from .* to `.*' in" $exec_output] {
 126         pass $test2
 127     } else {
 128         fail $test2
 129     }
 130 }
 131
 132 # Check cross references for ld -r
 133
 134 if { ![ld_compile $CC "$srcdir/$subdir/cross4.c" tmpdir/cross4.o] } {
 135     unresolved $test3
 136     set CFLAGS "$old_CFLAGS"
 137     set CC "$old_CC"
 138     return
 139 }
 140
 141 if ![ld_relocate $ld tmpdir/cross3-partial.o "tmpdir/cross1.o tmpdir/cross4.o"] {
 142     unresolved $test3
 143     set CFLAGS "$old_CFLAGS"
 144     set CC "$old_CC"
 145     return
 146 }
 147
 148 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross3 -T $srcdir/$subdir/cross3.t tmpdir/cross3-partial.o tmpdir/cross2.o"]
 149
 150 set exec_output [prune_warnings $exec_output]
 151
 152 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 153
 154 if [string match "" $exec_output] then {
 155     pass $test3
 156 } else {
 157     verbose -log "$exec_output"
 158     fail $test3
 159 }
 160
 161 set CFLAGS "$old_CFLAGS"
 162 set CC "$old_CC"