ld/testsuite/ld-scripts/crossref.exp

   1 # Test NOCROSSREFS in a linker script.
   2 # By Ian Lance Taylor, Cygnus Support.
   3 #   Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2007
   4 #   Free Software Foundation, Inc.
   5 #
   6 # This file is part of the GNU Binutils.
   7 #
   8 # This program is free software; you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation; either version 3 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program; if not, write to the Free Software
  20 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  21 # MA 02110-1301, USA.
  22
  23 set test1 "NOCROSSREFS 1"
  24 set test2 "NOCROSSREFS 2"
  25 set test3 "NOCROSSREFS 3"
  26
  27 if { ![is_remote host] && [which $CC] == 0 } {
  28     untested $test1
  29     untested $test2
  30     untested $test3
  31     return
  32 }
  33
  34 global CFLAGS
  35 set old_CFLAGS "$CFLAGS"
  36
  37 # Xtensa targets currently default to putting literal values in a separate
  38 # section and that requires linker script support, so put literals in text.
  39 if [istarget xtensa*-*-*] {
  40     set CFLAGS "$CFLAGS -mtext-section-literals"
  41 }
  42
  43 # If we have a compiler that doesn't use/reference dot-symbols, then
  44 # calls to functions reference the .opd section function descriptor.
  45 # This makes NOCROSSREFS rather useless on powerpc64.
  46 if [istarget powerpc64-*-*] {
  47     set CFLAGS "$CFLAGS -mcall-aixdesc"
  48 }
  49
  50 # Prevent the use of the MeP's small data area which references a symbol
  51 # called __sdabase which will not be defined by our test linker scripts.
  52 if [istarget mep*-*-elf] {
  53     set CFLAGS "-mtiny=0"
  54 }
  55
  56 # The .dsbt section and __c6xabi_DSBT_BASE are not defined in our test
  57 # linker scripts.
  58 if [istarget tic6x*-*-*] {
  59     set CFLAGS "-mno-dsbt -msdata=none"
  60 }
  61
  62 if { ![ld_compile $CC "$srcdir/$subdir/cross1.c" tmpdir/cross1.o] \
  63      || ![ld_compile $CC "$srcdir/$subdir/cross2.c" tmpdir/cross2.o] } {
  64     unresolved $test1
  65     unresolved $test2
  66     set CFLAGS "$old_CFLAGS"
  67     return
  68 }
  69
  70 set flags [big_or_little_endian]
  71
  72 if [istarget sh64*-*-elf] {
  73     # This is what gcc passes to ld by default.
  74     set flags "-mshelf32"
  75 }
  76
  77 # IA64 has both ordered and unordered sections in an input file.
  78 setup_xfail ia64-*-*
  79
  80 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross1 -T $srcdir/$subdir/cross1.t tmpdir/cross1.o tmpdir/cross2.o"]
  81
  82 set exec_output [prune_warnings $exec_output]
  83
  84 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
  85
  86 if [string match "" $exec_output] then {
  87     fail $test1
  88 } else {
  89     verbose -log "$exec_output"
  90     if [regexp "prohibited cross reference from .* to `.*foo' in" $exec_output] {
  91         pass $test1
  92     } else {
  93         fail $test1
  94     }
  95 }
  96
  97 # Check cross references within a single object.
  98
  99 if { ![ld_compile $CC "$srcdir/$subdir/cross3.c" tmpdir/cross3.o] } {
 100     unresolved $test2
 101     set CFLAGS "$old_CFLAGS"
 102     return
 103 }
 104
 105 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross2 -T $srcdir/$subdir/cross2.t tmpdir/cross3.o"]
 106 set exec_output [prune_warnings $exec_output]
 107
 108 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 109
 110 if [string match "" $exec_output] then {
 111     fail $test2
 112 } else {
 113     verbose -log "$exec_output"
 114     if [regexp "prohibited cross reference from .* to `.*' in" $exec_output] {
 115         pass $test2
 116     } else {
 117         fail $test2
 118     }
 119 }
 120
 121 # Check cross references for ld -r
 122
 123 if { ![ld_compile $CC "$srcdir/$subdir/cross4.c" tmpdir/cross4.o] } {
 124     unresolved $test3
 125     set CFLAGS "$old_CFLAGS"
 126     return
 127 }
 128
 129 if ![ld_relocate $ld tmpdir/cross3-partial.o "tmpdir/cross1.o tmpdir/cross4.o"] {
 130     unresolved $test3
 131     set CFLAGS "$old_CFLAGS"
 132     return
 133 }
 134
 135 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross3 -T $srcdir/$subdir/cross3.t tmpdir/cross3-partial.o tmpdir/cross2.o"]
 136
 137 set exec_output [prune_warnings $exec_output]
 138
 139 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 140
 141 if [string match "" $exec_output] then {
 142     pass $test3
 143 } else {
 144     verbose -log "$exec_output"
 145     fail $test3
 146 }
 147
 148 set CFLAGS "$old_CFLAGS"