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f64b2e8d NC |
1 | # Expect script for linker support of STB_GNU_UNIQUE symbols |
2 | # | |
6f2750fe | 3 | # Copyright (C) 2009-2016 Free Software Foundation, Inc. |
f64b2e8d NC |
4 | # Contributed by Red Hat. |
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 | # Written by Nick Clifton <nickc@redhat.com> | |
24 | # Adapted for unique checking by Mark J. Wielaard <mjw@redhat.com> | |
25 | ||
26 | ||
a43942db MR |
27 | # Exclude non-ELF targets. |
28 | if { ![is_elf_format] } { | |
29 | return | |
30 | } | |
31 | ||
32 | # Require STB_GNU_UNIQUE support with OSABI set to GNU. | |
33 | if { ![supports_gnu_unique] } { | |
f64b2e8d NC |
34 | verbose "UNIQUE tests not run - target does not support UNIQUE" |
35 | return | |
36 | } | |
37 | ||
c3fbf828 MR |
38 | run_dump_test "unique" |
39 | ||
f64b2e8d NC |
40 | # We need a native system. FIXME: Strictly speaking this |
41 | # is not true, we just need to know how to create a fully | |
42 | # linked executable, including the C and Z libraries, using | |
43 | # the linker that is under test. | |
44 | if ![isnative] { | |
c3fbf828 | 45 | verbose "UNIQUE compiled tests not run - not a native toolchain" |
f64b2e8d NC |
46 | return |
47 | } | |
48 | ||
49 | # We need a working compiler. (Strictly speaking this is | |
50 | # not true, we could use target specific assembler files). | |
51 | if { [which $CC] == 0 } { | |
c3fbf828 | 52 | verbose "UNIQUE compiled tests not run - no compiler available" |
f64b2e8d NC |
53 | return |
54 | } | |
55 | ||
56 | # A procedure to check the OS/ABI field in the ELF header of a binary file. | |
57 | proc check_osabi { binary_file expected_osabi } { | |
58 | global READELF | |
59 | global READELFFLAGS | |
60 | ||
61 | catch "exec $READELF $READELFFLAGS --file-header $binary_file > readelf.out" got | |
62 | ||
63 | if ![string match "" $got] then { | |
64 | verbose "proc check_osabi: Readelf produced unexpected out processing $binary_file: $got" | |
65 | return 0 | |
66 | } | |
67 | ||
68 | if { ![regexp "\n\[ \]*OS/ABI:\[ \]*(.+)\n\[ \]*ABI" \ | |
69 | [file_contents readelf.out] nil osabi] } { | |
70 | verbose "proc check_osabi: Readelf failed to extract an ELF header from $binary_file" | |
71 | return 0 | |
72 | } | |
73 | ||
74 | if { $osabi == $expected_osabi } { | |
75 | return 1 | |
76 | } | |
77 | ||
78 | verbose "Expected OSABI: $expected_osabi, Obtained osabi: $osabi" | |
79 | ||
80 | return 0 | |
81 | } | |
82 | ||
83 | # A procedure to confirm that a file contains the UNIQUE symbol. | |
84 | # Returns -1 upon error, 0 if the symbol was not found and 1 if it was found. | |
85 | proc contains_unique_symbol { binary_file } { | |
86 | global READELF | |
87 | global READELFFLAGS | |
88 | ||
89 | catch "exec $READELF $READELFFLAGS --symbols $binary_file > readelf.out" got | |
90 | ||
91 | if ![string match "" $got] then { | |
92 | verbose "proc contains_unique_symbol: Readelf produced unexpected out processing $binary_file: $got" | |
93 | return -1 | |
94 | } | |
95 | ||
96 | # Look for a line like this: | |
97 | # 54: 0000000000400474 4 OBJECT UNIQUE DEFAULT 13 a | |
98 | ||
99 | if { ![regexp ".*\[ \]*OBJECT\[ \]+UNIQUE\[ \]+DEFAULT\[ \]+\[UND0-9\]+\[ \]+\[ab\]\n" [file_contents readelf.out]] } { | |
100 | return 0 | |
101 | } | |
102 | ||
103 | return 1 | |
104 | } | |
105 | ||
106 | set fails 0 | |
107 | ||
108 | # Create object file containing unique symbol. | |
109 | if ![ld_compile "$CC -c" "$srcdir/$subdir/unique.s" "tmpdir/unique.o"] { | |
110 | fail "Could not create a unique object" | |
111 | set fails [expr $fails + 1] | |
112 | } | |
113 | ||
114 | # Create object file NOT containing unique symbol. | |
115 | if ![ld_compile "$CC -c" "$srcdir/$subdir/unique_empty.s" "tmpdir/unique_empty.o"] { | |
116 | fail "Could not create a non-unique object" | |
117 | set fails [expr $fails + 1] | |
118 | } | |
119 | ||
120 | # Create pic object file containing unique symbol. | |
121 | if ![ld_compile "$CC -c -fPIC" "$srcdir/$subdir/unique_shared.s" "tmpdir/unique_shared.o"] { | |
122 | fail "Could not create a pic unique object" | |
123 | set fails [expr $fails + 1] | |
124 | } | |
125 | ||
126 | # Create executable containing unique symbol. | |
127 | if ![default_ld_link $ld "tmpdir/unique_prog" "tmpdir/unique.o"] { | |
128 | fail "Could not link a unique executable" | |
129 | set fails [expr $fails + 1] | |
130 | } | |
131 | ||
132 | # Create shared library containing unique symbol. | |
133 | if ![ld_simple_link $ld "tmpdir/libunique_shared.so" "-shared tmpdir/unique_shared.o"] { | |
134 | fail "Could not create a shared library containing an unique symbol" | |
135 | set fails [expr $fails + 1] | |
136 | } | |
137 | ||
138 | # Create executable NOT containing unique symbol linked against library. | |
139 | if ![default_ld_link $ld "tmpdir/unique_shared_prog" "-Ltmpdir tmpdir/unique_empty.o -Bdynamic -lunique_shared -rpath ./tmpdir"] { | |
140 | fail "Could not link a dynamic executable" | |
141 | set fails [expr $fails + 1] | |
142 | } | |
143 | ||
35399224 L |
144 | # Create shared library containing unique symbol with reference. |
145 | if ![ld_simple_link $ld "tmpdir/libunique_shared_ref.so" "-shared tmpdir/unique_shared.o tmpdir/unique_empty.o"] { | |
146 | fail "Could not create a shared library containing an unique symbol with reference" | |
147 | set fails [expr $fails + 1] | |
148 | } | |
149 | ||
f64b2e8d NC |
150 | if { $fails != 0 } { |
151 | return | |
152 | } | |
153 | ||
154 | # Check the object file. | |
9c55345c TS |
155 | if {! [check_osabi tmpdir/unique.o {UNIX - GNU}]} { |
156 | fail "Object containing unique does not have an OS/ABI field of GNU" | |
f64b2e8d NC |
157 | set fails [expr $fails + 1] |
158 | } | |
159 | ||
160 | if {[contains_unique_symbol tmpdir/unique.o] != 1} { | |
161 | fail "Object containing unique does not contain an UNIQUE symbol" | |
162 | set fails [expr $fails + 1] | |
163 | } | |
164 | ||
165 | if { $fails == 0 } { | |
166 | pass "Checking unique object" | |
167 | } | |
168 | ||
169 | # Check the executable. | |
9c55345c TS |
170 | if {! [check_osabi tmpdir/unique_prog {UNIX - GNU}]} { |
171 | fail "Executable containing unique does not have an OS/ABI field of GNU" | |
f64b2e8d NC |
172 | set fails [expr $fails + 1] |
173 | } | |
174 | ||
175 | if {[contains_unique_symbol tmpdir/unique_prog] != 1} { | |
176 | fail "Executable containing unique does not contain an UNIQUE symbol" | |
177 | set fails [expr $fails + 1] | |
178 | } | |
179 | ||
180 | if { $fails == 0 } { | |
181 | pass "Checking unique executable" | |
182 | } | |
183 | ||
184 | # Check the empty object file. | |
185 | if {! [check_osabi tmpdir/unique_empty.o {UNIX - System V}]} { | |
186 | fail "Object NOT containing unique does not have an OS/ABI field of System V" | |
187 | set fails [expr $fails + 1] | |
188 | } | |
189 | ||
190 | if {[contains_unique_symbol tmpdir/unique_empty.o] == 1} { | |
191 | fail "Object NOT containing unique does contain an UNIQUE symbol" | |
192 | set fails [expr $fails + 1] | |
193 | } | |
194 | ||
195 | if { $fails == 0 } { | |
196 | pass "Checking empty unique object" | |
197 | } | |
198 | ||
199 | # Check the unique PIC file. | |
9c55345c TS |
200 | if {! [check_osabi tmpdir/unique_shared.o {UNIX - GNU}]} { |
201 | fail "PIC Object containing unique does not have an OS/ABI field of GNU" | |
f64b2e8d NC |
202 | set fails [expr $fails + 1] |
203 | } | |
204 | ||
205 | if {[contains_unique_symbol tmpdir/unique_shared.o] != 1} { | |
206 | fail "PIC Object containing unique does not contain an UNIQUE symbol" | |
207 | set fails [expr $fails + 1] | |
208 | } | |
209 | ||
210 | if { $fails == 0 } { | |
211 | pass "Checking unique PIC object" | |
212 | } | |
213 | ||
214 | # Check the unique shared library. | |
9c55345c TS |
215 | if {! [check_osabi tmpdir/libunique_shared.so {UNIX - GNU}]} { |
216 | fail "Shared library containing unique does not have an OS/ABI field of GNU" | |
f64b2e8d NC |
217 | set fails [expr $fails + 1] |
218 | } | |
219 | ||
220 | if {[contains_unique_symbol tmpdir/libunique_shared.so] != 1} { | |
221 | fail "Shared library containing unique does not contain an UNIQUE symbol" | |
222 | set fails [expr $fails + 1] | |
223 | } | |
224 | ||
35399224 L |
225 | # Check the unique shared library with reference. |
226 | if {! [check_osabi tmpdir/libunique_shared_ref.so {UNIX - GNU}]} { | |
227 | fail "Shared library containing unique with reference does not have an OS/ABI field of GNU" | |
228 | set fails [expr $fails + 1] | |
229 | } | |
230 | ||
231 | if {[contains_unique_symbol tmpdir/libunique_shared_ref.so] != 1} { | |
232 | fail "Shared library containing unique with reference does not contain an UNIQUE symbol" | |
233 | set fails [expr $fails + 1] | |
234 | } | |
235 | ||
f64b2e8d NC |
236 | if { $fails == 0 } { |
237 | pass "Checking unique PIC object" | |
238 | } | |
239 | ||
240 | # Check the empty executable linked against unique shared library. | |
241 | if {! [check_osabi tmpdir/unique_shared_prog {UNIX - System V}]} { | |
242 | fail "Executable NOT containing unique does not have an OS/ABI field of System V" | |
243 | set fails [expr $fails + 1] | |
244 | } | |
245 | ||
246 | if {[contains_unique_symbol tmpdir/unique_shared_prog] == 1} { | |
247 | fail "Executable NOT containing unique does contain an UNIQUE symbol" | |
248 | set fails [expr $fails + 1] | |
249 | } | |
250 | ||
251 | if { $fails == 0 } { | |
252 | pass "Checking shared empty executable" | |
253 | } | |
254 | ||
255 | # Clean up, unless we are being verbose, in which case we leave the files available. | |
256 | if { $verbose < 1 } { | |
257 | remote_file host delete "tmpdir/unique_empty.o" | |
258 | remote_file host delete "tmpdir/unique.o" | |
259 | remote_file host delete "tmpdir/unique_shared.o" | |
260 | remote_file host delete "tmpdir/libunique_shared.so" | |
35399224 | 261 | remote_file host delete "tmpdir/libunique_shared_ref.so" |
f64b2e8d NC |
262 | remote_file host delete "tmpdir/unique_prog" |
263 | remote_file host delete "tmpdir/unique_shared_prog" | |
264 | } |