| 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" |