1 # Test NOCROSSREFS in a linker script.
2 # By Ian Lance Taylor, Cygnus Support.
3 # Copyright (C) 2000-2022 Free Software Foundation, Inc.
5 # This file is part of the GNU Binutils.
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.
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.
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,
22 set test1 "NOCROSSREFS 1"
23 set test2 "NOCROSSREFS 2"
24 set test3 "NOCROSSREFS 3"
25 set test4 "NOCROSSREFS_TO 1"
26 set test5 "NOCROSSREFS_TO 2"
27 set test6 "NOCROSSREFS_TO 3"
28 set test7 "NOCROSSREFS_TO 4"
30 if { ![check_compiler_available] } {
41 # Pass -fplt to CC since -fno-plt doesn't work with NOCROSSREFS tests.
42 # Also add $NOPIE_CFLAGS since PIE doesn't work NOCROSSREFS tests.
43 set old_CFLAGS "$CFLAGS_FOR_TARGET"
44 append CFLAGS_FOR_TARGET " $PLT_CFLAGS $NOPIE_CFLAGS"
46 # Xtensa targets currently default to putting literal values in a separate
47 # section and that requires linker script support, so put literals in text.
48 if [istarget xtensa*-*-*] {
49 append CFLAGS_FOR_TARGET " -mtext-section-literals"
52 # Prevent the use of the MeP's small data area which references a symbol
53 # called __sdabase which will not be defined by our test linker scripts.
54 if [istarget mep*-*-elf] {
55 append CFLAGS_FOR_TARGET " -mtiny=0"
58 # The .dsbt section and __c6xabi_DSBT_BASE are not defined in our test
60 if [istarget tic6x*-*-*] {
61 append CFLAGS_FOR_TARGET " -mno-dsbt -msdata=none"
64 if { ![ld_compile "$CC_FOR_TARGET $NOSANITIZE_CFLAGS $NOLTO_CFLAGS" "$srcdir/$subdir/cross1.c" tmpdir/cross1.o] \
65 || ![ld_compile "$CC_FOR_TARGET $NOSANITIZE_CFLAGS $NOLTO_CFLAGS" "$srcdir/$subdir/cross2.c" tmpdir/cross2.o] } {
68 set CFLAGS_FOR_TARGET "$old_CFLAGS"
72 set flags [big_or_little_endian]
74 # arc-elf32 requires the symbol __SDATA_BEGIN__ to always be present.
75 if [istarget arc*-*-elf32] {
76 append flags " --defsym __SDATA_BEGIN__=0"
79 if [is_pecoff_format] {
80 append flags " --image-base 0"
83 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross1 -T $srcdir/$subdir/cross1.t tmpdir/cross1.o tmpdir/cross2.o"]
85 set exec_output [prune_warnings $exec_output]
87 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
89 if [string match "" $exec_output] then {
92 verbose -log "$exec_output"
93 if [regexp "prohibited cross reference from .* to `.*foo' in" $exec_output] {
100 # Check cross references within a single object.
102 if { ![ld_compile "$CC_FOR_TARGET $NOSANITIZE_CFLAGS $NOLTO_CFLAGS" "$srcdir/$subdir/cross3.c" tmpdir/cross3.o] } {
104 set CFLAGS_FOR_TARGET "$old_CFLAGS"
108 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross2 -T $srcdir/$subdir/cross2.t tmpdir/cross3.o"]
109 set exec_output [prune_warnings $exec_output]
111 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
113 if [string match "" $exec_output] then {
116 verbose -log "$exec_output"
117 if [regexp "prohibited cross reference from .* to `.*' in" $exec_output] {
124 # Check cross references for ld -r
126 if { ![ld_compile "$CC_FOR_TARGET $NOSANITIZE_CFLAGS $NOLTO_CFLAGS" "$srcdir/$subdir/cross4.c" tmpdir/cross4.o] } {
128 set CFLAGS_FOR_TARGET "$old_CFLAGS"
132 if ![ld_relocate $ld tmpdir/cross3-partial.o "tmpdir/cross1.o tmpdir/cross4.o"] {
134 set CFLAGS_FOR_TARGET "$old_CFLAGS"
138 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross3 -T $srcdir/$subdir/cross3.t tmpdir/cross3-partial.o tmpdir/cross2.o"]
140 set exec_output [prune_warnings $exec_output]
142 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
144 if [string match "" $exec_output] then {
147 verbose -log "$exec_output"
151 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross4 -T $srcdir/$subdir/cross4.t tmpdir/cross4.o"]
152 set exec_output [prune_warnings $exec_output]
154 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
156 if [string match "" $exec_output] then {
159 verbose -log "$exec_output"
163 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross5 -T $srcdir/$subdir/cross5.t tmpdir/cross4.o"]
164 set exec_output [prune_warnings $exec_output]
166 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
168 if [string match "" $exec_output] then {
171 verbose -log "$exec_output"
172 if [regexp "prohibited cross reference from .* to `.*' in" $exec_output] {
179 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross6 -T $srcdir/$subdir/cross6.t tmpdir/cross3.o"]
180 set exec_output [prune_warnings $exec_output]
182 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
184 if [string match "" $exec_output] then {
187 verbose -log "$exec_output"
191 set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross7 -T $srcdir/$subdir/cross7.t tmpdir/cross3.o"]
192 set exec_output [prune_warnings $exec_output]
194 regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
196 if [string match "" $exec_output] then {
199 verbose -log "$exec_output"
200 if [regexp "prohibited cross reference from .* to `.*' in" $exec_output] {
207 set CFLAGS_FOR_TARGET "$old_CFLAGS"