ld/testsuite/ld-scripts/crossref.exp

   1 # Test NOCROSSREFS in a linker script.
   2 # By Ian Lance Taylor, Cygnus Support.
   3 #   Copyright (C) 2000-2014 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 # Xtensa targets currently default to putting literal values in a separate
  37 # section and that requires linker script support, so put literals in text.
  38 if [istarget xtensa*-*-*] {
  39     set CFLAGS "$CFLAGS -mtext-section-literals"
  40 }
  41
  42 # If we have a compiler that doesn't use/reference dot-symbols, then
  43 # calls to functions reference the .opd section function descriptor.
  44 # This makes NOCROSSREFS rather useless on powerpc64.
  45 if [istarget powerpc64-*-*] {
  46     set CFLAGS "$CFLAGS -mcall-aixdesc"
  47 }
  48
  49 # Prevent the use of the MeP's small data area which references a symbol
  50 # called __sdabase which will not be defined by our test linker scripts.
  51 if [istarget mep*-*-elf] {
  52     set CFLAGS "-mtiny=0"
  53 }
  54
  55 # The .dsbt section and __c6xabi_DSBT_BASE are not defined in our test
  56 # linker scripts.
  57 if [istarget tic6x*-*-*] {
  58     set CFLAGS "-mno-dsbt -msdata=none"
  59 }
  60
  61 if { ![ld_compile $CC "$srcdir/$subdir/cross1.c" tmpdir/cross1.o] \
  62      || ![ld_compile $CC "$srcdir/$subdir/cross2.c" tmpdir/cross2.o] } {
  63     unresolved $test1
  64     unresolved $test2
  65     set CFLAGS "$old_CFLAGS"
  66     return
  67 }
  68
  69 set flags [big_or_little_endian]
  70
  71 if [istarget sh64*-*-elf] {
  72     # This is what gcc passes to ld by default.
  73     set flags "-mshelf32"
  74 }
  75
  76 # IA64 has both ordered and unordered sections in an input file.
  77 setup_xfail ia64-*-*
  78
  79 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross1 -T $srcdir/$subdir/cross1.t tmpdir/cross1.o tmpdir/cross2.o"]
  80
  81 set exec_output [prune_warnings $exec_output]
  82
  83 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
  84
  85 if [string match "" $exec_output] then {
  86     fail $test1
  87 } else {
  88     verbose -log "$exec_output"
  89     if [regexp "prohibited cross reference from .* to `.*foo' in" $exec_output] {
  90         pass $test1
  91     } else {
  92         fail $test1
  93     }
  94 }
  95
  96 # Check cross references within a single object.
  97
  98 if { ![ld_compile $CC "$srcdir/$subdir/cross3.c" tmpdir/cross3.o] } {
  99     unresolved $test2
 100     set CFLAGS "$old_CFLAGS"
 101     return
 102 }
 103
 104 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross2 -T $srcdir/$subdir/cross2.t tmpdir/cross3.o"]
 105 set exec_output [prune_warnings $exec_output]
 106
 107 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 108
 109 if [string match "" $exec_output] then {
 110     fail $test2
 111 } else {
 112     verbose -log "$exec_output"
 113     if [regexp "prohibited cross reference from .* to `.*' in" $exec_output] {
 114         pass $test2
 115     } else {
 116         fail $test2
 117     }
 118 }
 119
 120 # Check cross references for ld -r
 121
 122 if { ![ld_compile $CC "$srcdir/$subdir/cross4.c" tmpdir/cross4.o] } {
 123     unresolved $test3
 124     set CFLAGS "$old_CFLAGS"
 125     return
 126 }
 127
 128 if ![ld_relocate $ld tmpdir/cross3-partial.o "tmpdir/cross1.o tmpdir/cross4.o"] {
 129     unresolved $test3
 130     set CFLAGS "$old_CFLAGS"
 131     return
 132 }
 133
 134 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross3 -T $srcdir/$subdir/cross3.t tmpdir/cross3-partial.o tmpdir/cross2.o"]
 135
 136 set exec_output [prune_warnings $exec_output]
 137
 138 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 139
 140 if [string match "" $exec_output] then {
 141     pass $test3
 142 } else {
 143     verbose -log "$exec_output"
 144     fail $test3
 145 }
 146
 147 set CFLAGS "$old_CFLAGS"