1# Test NOCROSSREFS in a linker script.
2# By Ian Lance Taylor, Cygnus Support.
3#   Copyright (C) 2000-2020 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
22set test1 "NOCROSSREFS 1"
23set test2 "NOCROSSREFS 2"
24set test3 "NOCROSSREFS 3"
25set test4 "NOCROSSREFS_TO 1"
26set test5 "NOCROSSREFS_TO 2"
27set test6 "NOCROSSREFS_TO 3"
28set test7 "NOCROSSREFS_TO 4"
29
30if { ![check_compiler_available] } {
31    untested $test1
32    untested $test2
33    untested $test3
34    untested $test4
35    untested $test5
36    untested $test6
37    untested $test7
38    return
39}
40
41set old_CFLAGS "$CFLAGS"
42
43# Pass -fplt to CC since -fno-plt doesn't work with NOCROSSREFS tests.
44# Also add $NOPIE_CFLAGS since PIE doesn't work NOCROSSREFS tests.
45set old_CC "$CC"
46set CC "$CC $PLT_CFLAGS $NOPIE_CFLAGS"
47
48# Xtensa targets currently default to putting literal values in a separate
49# section and that requires linker script support, so put literals in text.
50if [istarget xtensa*-*-*] {
51    set CFLAGS "$CFLAGS -mtext-section-literals"
52}
53
54# Prevent the use of the MeP's small data area which references a symbol
55# called __sdabase which will not be defined by our test linker scripts.
56if [istarget mep*-*-elf] {
57    set CFLAGS "-mtiny=0"
58}
59
60# The .dsbt section and __c6xabi_DSBT_BASE are not defined in our test
61# linker scripts.
62if [istarget tic6x*-*-*] {
63    set CFLAGS "-mno-dsbt -msdata=none"
64}
65
66if { ![ld_compile "$CC $NOSANITIZE_CFLAGS" "$srcdir/$subdir/cross1.c" tmpdir/cross1.o] \
67     || ![ld_compile "$CC $NOSANITIZE_CFLAGS" "$srcdir/$subdir/cross2.c" tmpdir/cross2.o] } {
68    unresolved $test1
69    unresolved $test2
70    set CFLAGS "$old_CFLAGS"
71    set CC "$old_CC"
72    return
73}
74
75set flags [big_or_little_endian]
76
77# arc-elf32 requires the symbol __SDATA_BEGIN__ to always be present.
78if [istarget arc*-*-elf32] {
79    set flags "$flags --defsym=__SDATA_BEGIN__=0"
80}
81
82# IA64 has both ordered and unordered sections in an input file.
83setup_xfail ia64-*-*
84
85set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross1 -T $srcdir/$subdir/cross1.t tmpdir/cross1.o tmpdir/cross2.o"]
86
87set exec_output [prune_warnings $exec_output]
88
89regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
90
91if [string match "" $exec_output] then {
92    fail $test1
93} else {
94    verbose -log "$exec_output"
95    if [regexp "prohibited cross reference from .* to `.*foo' in" $exec_output] {
96	pass $test1
97    } else {
98	fail $test1
99    }
100}
101
102# Check cross references within a single object.
103
104if { ![ld_compile "$CC $NOSANITIZE_CFLAGS" "$srcdir/$subdir/cross3.c" tmpdir/cross3.o] } {
105    unresolved $test2
106    set CFLAGS "$old_CFLAGS"
107    set CC "$old_CC"
108    return
109}
110
111set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross2 -T $srcdir/$subdir/cross2.t tmpdir/cross3.o"]
112set exec_output [prune_warnings $exec_output]
113
114regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
115
116if [string match "" $exec_output] then {
117    fail $test2
118} else {
119    verbose -log "$exec_output"
120    if [regexp "prohibited cross reference from .* to `.*' in" $exec_output] {
121	pass $test2
122    } else {
123	fail $test2
124    }
125}
126
127# Check cross references for ld -r
128
129if { ![ld_compile "$CC $NOSANITIZE_CFLAGS" "$srcdir/$subdir/cross4.c" tmpdir/cross4.o] } {
130    unresolved $test3
131    set CFLAGS "$old_CFLAGS"
132    set CC "$old_CC"
133    return
134}
135
136if ![ld_relocate $ld tmpdir/cross3-partial.o "tmpdir/cross1.o tmpdir/cross4.o"] {
137    unresolved $test3
138    set CFLAGS "$old_CFLAGS"
139    set CC "$old_CC"
140    return
141}
142
143set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross3 -T $srcdir/$subdir/cross3.t tmpdir/cross3-partial.o tmpdir/cross2.o"]
144
145set exec_output [prune_warnings $exec_output]
146
147regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
148
149if [string match "" $exec_output] then {
150    pass $test3
151} else {
152    verbose -log "$exec_output"
153    fail $test3
154}
155
156set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross4 -T $srcdir/$subdir/cross4.t tmpdir/cross4.o"]
157set exec_output [prune_warnings $exec_output]
158
159regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
160
161if [string match "" $exec_output] then {
162    pass $test4
163} else {
164    verbose -log "$exec_output"
165    fail $test4
166}
167
168set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross5 -T $srcdir/$subdir/cross5.t tmpdir/cross4.o"]
169set exec_output [prune_warnings $exec_output]
170
171regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
172
173if [string match "" $exec_output] then {
174    fail $test5
175} else {
176    verbose -log "$exec_output"
177    if [regexp "prohibited cross reference from .* to `.*' in" $exec_output] {
178	pass $test5
179    } else {
180	fail $test5
181    }
182}
183
184set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross6 -T $srcdir/$subdir/cross6.t tmpdir/cross3.o"]
185set exec_output [prune_warnings $exec_output]
186
187regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
188
189if [string match "" $exec_output] then {
190    pass $test6
191} else {
192    verbose -log "$exec_output"
193    fail $test6
194}
195
196set exec_output [run_host_cmd "$ld" "$flags -o tmpdir/cross7 -T $srcdir/$subdir/cross7.t tmpdir/cross3.o"]
197set exec_output [prune_warnings $exec_output]
198
199regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
200
201if [string match "" $exec_output] then {
202    fail $test7
203} else {
204    verbose -log "$exec_output"
205    if [regexp "prohibited cross reference from .* to `.*' in" $exec_output] {
206	pass $test7
207    } else {
208	fail $test7
209    }
210}
211
212set CFLAGS "$old_CFLAGS"
213set CC "$old_CC"
214