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.
6 # This file is part of the GNU Binutils.
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.
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.
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,
23 set test1 "NOCROSSREFS 1"
24 set test2 "NOCROSSREFS 2"
25 set test3 "NOCROSSREFS 3"
27 if { ![is_remote host] && [which $CC] == 0 } {
35 set old_CFLAGS "$CFLAGS"
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 "$CFLAGS -mtext-section-literals"
43 # If we have a compiler that doesn't use/reference dot-symbols, then
44 # calls to functions reference the .opd section function descriptor.
45 # This makes NOCROSSREFS rather useless on powerpc64.
46 if [istarget powerpc64-*-*] {
47 set CFLAGS "$CFLAGS -mcall-aixdesc"
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] {
56 # The .dsbt section and __c6xabi_DSBT_BASE are not defined in our test
58 if [istarget tic6x*-*-*] {
59 set CFLAGS "-mno-dsbt -msdata=none"
62 if { ![ld_compile $CC "$srcdir/$subdir/cross1.c" tmpdir/cross1.o] \
63 || ![ld_compile $CC "$srcdir/$subdir/cross2.c" tmpdir/cross2.o] } {
66 set CFLAGS "$old_CFLAGS"
70 set flags [big_or_little_endian]
72 if [istarget sh64*-*-elf] {
73 # This is what gcc passes to ld by default.
77 # IA64 has both ordered and unordered sections in an input file.
80 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross1 -T $srcdir/$subdir/cross1.t tmpdir/cross1.o tmpdir/cross2.o"]
82 set exec_output [prune_warnings $exec_output]
84 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
86 if [string match "" $exec_output] then {
89 verbose -log "$exec_output"
90 if [regexp "prohibited cross reference from .* to `.*foo' in" $exec_output] {
97 # Check cross references within a single object.
99 if { ![ld_compile $CC "$srcdir/$subdir/cross3.c" tmpdir/cross3.o] } {
101 set CFLAGS "$old_CFLAGS"
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 $exec_output]
108 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
110 if [string match "" $exec_output] then {
113 verbose -log "$exec_output"
114 if [regexp "prohibited cross reference from .* to `.*' in" $exec_output] {
121 # Check cross references for ld -r
123 if { ![ld_compile $CC "$srcdir/$subdir/cross4.c" tmpdir/cross4.o] } {
125 set CFLAGS "$old_CFLAGS"
129 if ![ld_relocate $ld tmpdir/cross3-partial.o "tmpdir/cross1.o tmpdir/cross4.o"] {
131 set CFLAGS "$old_CFLAGS"
135 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross3 -T $srcdir/$subdir/cross3.t tmpdir/cross3-partial.o tmpdir/cross2.o"]
137 set exec_output [prune_warnings $exec_output]
139 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
141 if [string match "" $exec_output] then {
144 verbose -log "$exec_output"
148 set CFLAGS "$old_CFLAGS"