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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 | ||
27 | # STB_GNU_UNIQUE support has only been implemented for the ix86, x86_64, | |
6d6a648c | 28 | # arm, mips, powerpc, and sparc so far. |
f64b2e8d NC |
29 | if {!(([istarget "i?86-*-*"] |
30 | || [istarget "x86_64-*-*"] | |
62cf91a3 | 31 | || [istarget "arm*-*-*"] |
6d6a648c | 32 | || [istarget "mips*-*-*"] |
f64b2e8d NC |
33 | || [istarget "powerpc*-*-*"] |
34 | || [istarget "sparc*-*-*"]) | |
35 | && ([istarget "*-*-elf*"] | |
5a68afcf | 36 | || [istarget "*-*-nacl*"] |
f64b2e8d NC |
37 | || (([istarget "*-*-linux*"] |
38 | || [istarget "*-*-gnu*"]) | |
39 | && ![istarget "*-*-*aout*"] | |
40 | && ![istarget "*-*-*oldld*"]))) } { | |
41 | verbose "UNIQUE tests not run - target does not support UNIQUE" | |
42 | return | |
43 | } | |
44 | ||
45 | # We need a native system. FIXME: Strictly speaking this | |
46 | # is not true, we just need to know how to create a fully | |
47 | # linked executable, including the C and Z libraries, using | |
48 | # the linker that is under test. | |
49 | if ![isnative] { | |
50 | verbose "UNIQUE tests not run - not a native toolchain" | |
51 | return | |
52 | } | |
53 | ||
54 | # We need a working compiler. (Strictly speaking this is | |
55 | # not true, we could use target specific assembler files). | |
56 | if { [which $CC] == 0 } { | |
57 | verbose "UNIQUE tests not run - no compiler available" | |
58 | return | |
59 | } | |
60 | ||
61 | # A procedure to check the OS/ABI field in the ELF header of a binary file. | |
62 | proc check_osabi { binary_file expected_osabi } { | |
63 | global READELF | |
64 | global READELFFLAGS | |
65 | ||
66 | catch "exec $READELF $READELFFLAGS --file-header $binary_file > readelf.out" got | |
67 | ||
68 | if ![string match "" $got] then { | |
69 | verbose "proc check_osabi: Readelf produced unexpected out processing $binary_file: $got" | |
70 | return 0 | |
71 | } | |
72 | ||
73 | if { ![regexp "\n\[ \]*OS/ABI:\[ \]*(.+)\n\[ \]*ABI" \ | |
74 | [file_contents readelf.out] nil osabi] } { | |
75 | verbose "proc check_osabi: Readelf failed to extract an ELF header from $binary_file" | |
76 | return 0 | |
77 | } | |
78 | ||
79 | if { $osabi == $expected_osabi } { | |
80 | return 1 | |
81 | } | |
82 | ||
83 | verbose "Expected OSABI: $expected_osabi, Obtained osabi: $osabi" | |
84 | ||
85 | return 0 | |
86 | } | |
87 | ||
88 | # A procedure to confirm that a file contains the UNIQUE symbol. | |
89 | # Returns -1 upon error, 0 if the symbol was not found and 1 if it was found. | |
90 | proc contains_unique_symbol { binary_file } { | |
91 | global READELF | |
92 | global READELFFLAGS | |
93 | ||
94 | catch "exec $READELF $READELFFLAGS --symbols $binary_file > readelf.out" got | |
95 | ||
96 | if ![string match "" $got] then { | |
97 | verbose "proc contains_unique_symbol: Readelf produced unexpected out processing $binary_file: $got" | |
98 | return -1 | |
99 | } | |
100 | ||
101 | # Look for a line like this: | |
102 | # 54: 0000000000400474 4 OBJECT UNIQUE DEFAULT 13 a | |
103 | ||
104 | if { ![regexp ".*\[ \]*OBJECT\[ \]+UNIQUE\[ \]+DEFAULT\[ \]+\[UND0-9\]+\[ \]+\[ab\]\n" [file_contents readelf.out]] } { | |
105 | return 0 | |
106 | } | |
107 | ||
108 | return 1 | |
109 | } | |
110 | ||
111 | set fails 0 | |
112 | ||
113 | # Create object file containing unique symbol. | |
114 | if ![ld_compile "$CC -c" "$srcdir/$subdir/unique.s" "tmpdir/unique.o"] { | |
115 | fail "Could not create a unique object" | |
116 | set fails [expr $fails + 1] | |
117 | } | |
118 | ||
119 | # Create object file NOT containing unique symbol. | |
120 | if ![ld_compile "$CC -c" "$srcdir/$subdir/unique_empty.s" "tmpdir/unique_empty.o"] { | |
121 | fail "Could not create a non-unique object" | |
122 | set fails [expr $fails + 1] | |
123 | } | |
124 | ||
125 | # Create pic object file containing unique symbol. | |
126 | if ![ld_compile "$CC -c -fPIC" "$srcdir/$subdir/unique_shared.s" "tmpdir/unique_shared.o"] { | |
127 | fail "Could not create a pic unique object" | |
128 | set fails [expr $fails + 1] | |
129 | } | |
130 | ||
131 | # Create executable containing unique symbol. | |
132 | if ![default_ld_link $ld "tmpdir/unique_prog" "tmpdir/unique.o"] { | |
133 | fail "Could not link a unique executable" | |
134 | set fails [expr $fails + 1] | |
135 | } | |
136 | ||
137 | # Create shared library containing unique symbol. | |
138 | if ![ld_simple_link $ld "tmpdir/libunique_shared.so" "-shared tmpdir/unique_shared.o"] { | |
139 | fail "Could not create a shared library containing an unique symbol" | |
140 | set fails [expr $fails + 1] | |
141 | } | |
142 | ||
143 | # Create executable NOT containing unique symbol linked against library. | |
144 | if ![default_ld_link $ld "tmpdir/unique_shared_prog" "-Ltmpdir tmpdir/unique_empty.o -Bdynamic -lunique_shared -rpath ./tmpdir"] { | |
145 | fail "Could not link a dynamic executable" | |
146 | set fails [expr $fails + 1] | |
147 | } | |
148 | ||
35399224 L |
149 | # Create shared library containing unique symbol with reference. |
150 | if ![ld_simple_link $ld "tmpdir/libunique_shared_ref.so" "-shared tmpdir/unique_shared.o tmpdir/unique_empty.o"] { | |
151 | fail "Could not create a shared library containing an unique symbol with reference" | |
152 | set fails [expr $fails + 1] | |
153 | } | |
154 | ||
f64b2e8d NC |
155 | if { $fails != 0 } { |
156 | return | |
157 | } | |
158 | ||
159 | # Check the object file. | |
9c55345c TS |
160 | if {! [check_osabi tmpdir/unique.o {UNIX - GNU}]} { |
161 | fail "Object containing unique does not have an OS/ABI field of GNU" | |
f64b2e8d NC |
162 | set fails [expr $fails + 1] |
163 | } | |
164 | ||
165 | if {[contains_unique_symbol tmpdir/unique.o] != 1} { | |
166 | fail "Object containing unique does not contain an UNIQUE symbol" | |
167 | set fails [expr $fails + 1] | |
168 | } | |
169 | ||
170 | if { $fails == 0 } { | |
171 | pass "Checking unique object" | |
172 | } | |
173 | ||
174 | # Check the executable. | |
9c55345c TS |
175 | if {! [check_osabi tmpdir/unique_prog {UNIX - GNU}]} { |
176 | fail "Executable containing unique does not have an OS/ABI field of GNU" | |
f64b2e8d NC |
177 | set fails [expr $fails + 1] |
178 | } | |
179 | ||
180 | if {[contains_unique_symbol tmpdir/unique_prog] != 1} { | |
181 | fail "Executable containing unique does not contain an UNIQUE symbol" | |
182 | set fails [expr $fails + 1] | |
183 | } | |
184 | ||
185 | if { $fails == 0 } { | |
186 | pass "Checking unique executable" | |
187 | } | |
188 | ||
189 | # Check the empty object file. | |
190 | if {! [check_osabi tmpdir/unique_empty.o {UNIX - System V}]} { | |
191 | fail "Object NOT containing unique does not have an OS/ABI field of System V" | |
192 | set fails [expr $fails + 1] | |
193 | } | |
194 | ||
195 | if {[contains_unique_symbol tmpdir/unique_empty.o] == 1} { | |
196 | fail "Object NOT containing unique does contain an UNIQUE symbol" | |
197 | set fails [expr $fails + 1] | |
198 | } | |
199 | ||
200 | if { $fails == 0 } { | |
201 | pass "Checking empty unique object" | |
202 | } | |
203 | ||
204 | # Check the unique PIC file. | |
9c55345c TS |
205 | if {! [check_osabi tmpdir/unique_shared.o {UNIX - GNU}]} { |
206 | fail "PIC Object containing unique does not have an OS/ABI field of GNU" | |
f64b2e8d NC |
207 | set fails [expr $fails + 1] |
208 | } | |
209 | ||
210 | if {[contains_unique_symbol tmpdir/unique_shared.o] != 1} { | |
211 | fail "PIC Object containing unique does not contain an UNIQUE symbol" | |
212 | set fails [expr $fails + 1] | |
213 | } | |
214 | ||
215 | if { $fails == 0 } { | |
216 | pass "Checking unique PIC object" | |
217 | } | |
218 | ||
219 | # Check the unique shared library. | |
9c55345c TS |
220 | if {! [check_osabi tmpdir/libunique_shared.so {UNIX - GNU}]} { |
221 | fail "Shared library containing unique does not have an OS/ABI field of GNU" | |
f64b2e8d NC |
222 | set fails [expr $fails + 1] |
223 | } | |
224 | ||
225 | if {[contains_unique_symbol tmpdir/libunique_shared.so] != 1} { | |
226 | fail "Shared library containing unique does not contain an UNIQUE symbol" | |
227 | set fails [expr $fails + 1] | |
228 | } | |
229 | ||
35399224 L |
230 | # Check the unique shared library with reference. |
231 | if {! [check_osabi tmpdir/libunique_shared_ref.so {UNIX - GNU}]} { | |
232 | fail "Shared library containing unique with reference does not have an OS/ABI field of GNU" | |
233 | set fails [expr $fails + 1] | |
234 | } | |
235 | ||
236 | if {[contains_unique_symbol tmpdir/libunique_shared_ref.so] != 1} { | |
237 | fail "Shared library containing unique with reference does not contain an UNIQUE symbol" | |
238 | set fails [expr $fails + 1] | |
239 | } | |
240 | ||
f64b2e8d NC |
241 | if { $fails == 0 } { |
242 | pass "Checking unique PIC object" | |
243 | } | |
244 | ||
245 | # Check the empty executable linked against unique shared library. | |
246 | if {! [check_osabi tmpdir/unique_shared_prog {UNIX - System V}]} { | |
247 | fail "Executable NOT containing unique does not have an OS/ABI field of System V" | |
248 | set fails [expr $fails + 1] | |
249 | } | |
250 | ||
251 | if {[contains_unique_symbol tmpdir/unique_shared_prog] == 1} { | |
252 | fail "Executable NOT containing unique does contain an UNIQUE symbol" | |
253 | set fails [expr $fails + 1] | |
254 | } | |
255 | ||
256 | if { $fails == 0 } { | |
257 | pass "Checking shared empty executable" | |
258 | } | |
259 | ||
260 | # Clean up, unless we are being verbose, in which case we leave the files available. | |
261 | if { $verbose < 1 } { | |
262 | remote_file host delete "tmpdir/unique_empty.o" | |
263 | remote_file host delete "tmpdir/unique.o" | |
264 | remote_file host delete "tmpdir/unique_shared.o" | |
265 | remote_file host delete "tmpdir/libunique_shared.so" | |
35399224 | 266 | remote_file host delete "tmpdir/libunique_shared_ref.so" |
f64b2e8d NC |
267 | remote_file host delete "tmpdir/unique_prog" |
268 | remote_file host delete "tmpdir/unique_shared_prog" | |
269 | } |