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[deliverable/binutils-gdb.git] / ld / testsuite / ld-ifunc / ifunc.exp
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1# Expect script for linker support of IFUNC symbols and relocations.
2#
3# Copyright 2009 Free Software Foundation, Inc.
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
25
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26# IFUNC support has only been implemented for the ix86, x86_64 and powerpc
27# so far.
28if {!(([istarget "i?86-*-*"]
29 || [istarget "x86_64-*-*"]
30 || [istarget "powerpc*-*-*"])
31 && ([istarget "*-*-elf*"]
32 || ([istarget "*-*-linux*"]
33 && ![istarget "*-*-*aout*"]
34 && ![istarget "*-*-*oldld*"]))) } {
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35 verbose "IFUNC tests not run - target does not support IFUNC"
36 return
37}
38
39# We need a native system. FIXME: Strictly speaking this
40# is not true, we just need to know how to create a fully
41# linked executable, including the C and Z libraries, using
42# the linker that is under test.
43if ![isnative] {
44 verbose "IFUNC tests not run - not a native toolchain"
45 return
46}
47
48# We need a working compiler. (Strictly speaking this is
49# not true, we could use target specific assembler files).
50if { [which $CC] == 0 } {
51 verbose "IFUNC tests not run - no compiler available"
52 return
53}
54
55# A procedure to check the OS/ABI field in the ELF header of a binary file.
56proc check_osabi { binary_file expected_osabi } {
57 global READELF
58 global READELFFLAGS
59
60 catch "exec $READELF $READELFFLAGS --file-header $binary_file > readelf.out" got
61
62 if ![string match "" $got] then {
63 verbose "proc check_osabi: Readelf produced unexpected out processing $binary_file: $got"
64 return 0
65 }
66
67 if { ![regexp "\n\[ \]*OS/ABI:\[ \]*(.+)\n\[ \]*ABI" \
68 [file_contents readelf.out] nil osabi] } {
69 verbose "proc check_osabi: Readelf failed to extract an ELF header from $binary_file"
70 return 0
71 }
72
73 if { $osabi == $expected_osabi } {
74 return 1
75 }
76
77 verbose "Expected OSABI: $expected_osabi, Obtained osabi: $osabi"
78
79 return 0
80}
81
82# A procedure to confirm that a file contains the IFUNC symbol.
83# Returns -1 upon error, 0 if the symbol was not found and 1 if it was found.
84proc contains_ifunc_symbol { binary_file } {
85 global READELF
86 global READELFFLAGS
87
88 catch "exec $READELF $READELFFLAGS --symbols $binary_file > readelf.out" got
89
90 if ![string match "" $got] then {
91 verbose "proc contains_ifunc_symbol: Readelf produced unexpected out processing $binary_file: $got"
92 return -1
93 }
94
95 # Look for a line like this:
96 # 58: 0000000000400600 30 IFUNC GLOBAL DEFAULT 12 library_func2
97
98 if { ![regexp ".*\[ \]*IFUNC\[ \]+GLOBAL\[ \]+DEFAULT\[ \]+\[UND0-9\]+\[ \]+library_func2\n" [file_contents readelf.out]] } {
99 return 0
100 }
101
102 return 1
103}
104
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105# A procedure to confirm that a file contains the R_*_IRELATIVE
106# relocation.
107# Returns -1 upon error, 0 if the relocation was not found and 1 if
108# it was found.
109proc contains_irelative_reloc { binary_file } {
110 global READELF
111 global READELFFLAGS
112
113 catch "exec $READELF $READELFFLAGS --relocs --wide $binary_file > readelf.out" got
114
115 if ![string match "" $got] then {
116 verbose "proc contains_irelative_reloc: Readelf produced unexpected out processing $binary_file: $got"
117 return -1
118 }
119
120 # Look for a line like this:
121 # 0000000000600ab0 0000000000000025 R_X86_64_IRELATIVE 000000000040061c
122 # 080496f4 0000002a R_386_IRELATIVE
123
124
125 if { ![regexp "\[0-9a-f\]+\[ \]+\[0-9a-f\]+\[ \]+R_\[_0-9A-Z\]+_IRELATIVE\[ \]*\[0-9a-f\]*\n" [file_contents readelf.out]] } {
126 return 0
127 }
128
129 return 1
130}
131
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132# A procedure to confirm that a file contains a relocation that references an IFUNC symbol.
133# Returns -1 upon error, 0 if the reloc was not found and 1 if it was found.
134proc contains_ifunc_reloc { binary_file } {
135 global READELF
136 global READELFFLAGS
137
138 catch "exec $READELF $READELFFLAGS --relocs $binary_file > readelf.out" got
139
140 if ![string match "" $got] then {
141 verbose "proc contains_ifunc_reloc: Readelf produced unexpected out processing $binary_file: $got"
142 return -1
143 }
144
145 if [string match "" [file_contents readelf.out]] then {
146 verbose "No relocs found in $binary_file"
147 return 0
148 }
149
150 if { ![regexp "\\(\\)" [file_contents readelf.out]] } {
151 return 0
152 }
153
154 return 1
155}
156
157set fails 0
158
159# Create the object files, libraries and executables.
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160if ![ld_compile "$CC -c -fPIC" "$srcdir/$subdir/prog.c" "tmpdir/shared_prog.o"] {
161 fail "Could not create a PIC object file"
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162 set fails [expr $fails + 1]
163}
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164if ![ld_compile "$CC -c" "$srcdir/$subdir/prog.c" "tmpdir/static_prog.o"] {
165 fail "Could not create a non-PIC object file"
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166 set fails [expr $fails + 1]
167}
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168if ![ld_compile "$CC -c -fPIC -DWITH_IFUNC" "$srcdir/$subdir/lib.c" "tmpdir/shared_ifunc.o"] {
169 fail "Could not create a PIC object file containing an IFUNC symbol"
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170 set fails [expr $fails + 1]
171}
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172if ![ld_compile "$CC -c -DWITH_IFUNC" "$srcdir/$subdir/lib.c" "tmpdir/static_ifunc.o"] {
173 fail "Could not create a non-PIC object file containing an IFUNC symbol"
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174 set fails [expr $fails + 1]
175}
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176if ![ld_compile "$CC -c -DWITHOUT_IFUNC" "$srcdir/$subdir/lib.c" "tmpdir/static_noifunc.o"] {
177 fail "Could not create an ordinary non-PIC object file"
178 set fails [expr $fails + 1]
179}
180if ![ld_assemble $as "$srcdir/ld-elf/empty.s" "tmpdir/empty.o"] {
181 fail "Could not create an empty object file"
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182 set fails [expr $fails + 1]
183}
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184if ![ld_compile "$CC -c" "$srcdir/$subdir/test-1.c" "tmpdir/test-1.o"] {
185 fail "Could not create test-1.o"
186 set fails [expr $fails + 1]
187}
188if ![ld_compile "$CC -fPIC -c" "$srcdir/$subdir/test-2.c" "tmpdir/test-2.o"] {
189 fail "Could not create test-2.o"
190 set fails [expr $fails + 1]
191}
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192
193if { $fails != 0 } {
194 return
195}
196
197if ![ld_simple_link $ld "tmpdir/libshared_ifunc.so" "-shared tmpdir/shared_ifunc.o"] {
198 fail "Could not create a shared library containing an IFUNC symbol"
199 set fails [expr $fails + 1]
200}
201if ![ar_simple_create $ar "" "tmpdir/libifunc.a" "tmpdir/static_ifunc.o"] {
202 fail "Could not create a static library containing an IFUNC symbol"
203 set fails [expr $fails + 1]
204}
205
206if { $fails != 0 } {
207 return
208}
209
210if ![default_ld_link $ld "tmpdir/dynamic_prog" "-Ltmpdir tmpdir/shared_prog.o -Bdynamic -lshared_ifunc -rpath ./tmpdir"] {
211 fail "Could not link a dynamic executable"
212 set fails [expr $fails + 1]
213}
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214if ![default_ld_link $ld "tmpdir/local_prog" "-Ltmpdir tmpdir/static_prog.o -lifunc"] {
215 fail "Could not link a dynamic executable using local ifunc"
216 set fails [expr $fails + 1]
217}
218if ![default_ld_link $ld "tmpdir/static_prog" "-static -Ltmpdir tmpdir/static_prog.o -lifunc"] {
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219 fail "Could not link a static executable"
220 set fails [expr $fails + 1]
221}
be19bd51 222if ![ld_simple_link $ld "tmpdir/static_nonifunc_prog" "-static tmpdir/empty.o"] {
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223 fail "Could not link a non-ifunc using static executable"
224 set fails [expr $fails + 1]
225}
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226if ![default_ld_link $ld "tmpdir/test-1" "tmpdir/test-1.o tmpdir/libshared_ifunc.so"] {
227 fail "Could not link test-1"
228 set fails [expr $fails + 1]
229}
230if ![ld_simple_link $ld "tmpdir/libtest-2.so" "-shared tmpdir/test-2.o"] {
231 fail "Could not link libtest-2.so"
232 set fails [expr $fails + 1]
233}
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234
235if { $fails == 0 } {
236 pass "Building ifunc binaries"
237 set fails 0
238} else {
239 return
240}
241
cbe950e9 242# Check the executables and shared libraries
d8045f23 243#
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244# The linked ifunc using executables and the shared library containing
245# ifunc should have an OSABI field of LINUX. The linked non-ifunc using
246# executable should have an OSABI field of NONE (aka System V).
d8045f23 247
cbe950e9
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248if {! [check_osabi tmpdir/libshared_ifunc.so {UNIX - Linux}]} {
249 fail "Shared libraries containing ifunc does not have an OS/ABI field of LINUX"
250 set fails [expr $fails + 1]
251}
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252if {! [check_osabi tmpdir/local_prog {UNIX - Linux}]} {
253 fail "Local ifunc-using executable does not have an OS/ABI field of LINUX"
254 set fails [expr $fails + 1]
255}
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256if {! [check_osabi tmpdir/static_prog {UNIX - Linux}]} {
257 fail "Static ifunc-using executable does not have an OS/ABI field of LINUX"
258 set fails [expr $fails + 1]
259}
260if {! [check_osabi tmpdir/dynamic_prog {UNIX - Linux}]} {
261 fail "Dynamic ifunc-using executable does not have an OS/ABI field of LINUX"
262 set fails [expr $fails + 1]
263}
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264if {! [check_osabi tmpdir/static_nonifunc_prog {UNIX - System V}]} {
265 fail "Static non-ifunc-using executable does not have an OS/ABI field of System V"
266 set fails [expr $fails + 1]
267}
d8045f23 268
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269# The linked ifunc using executables and the shared library containing
270# ifunc should contain an IFUNC symbol. The non-ifunc using executable
271# should not.
d8045f23 272
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273if {[contains_ifunc_symbol tmpdir/libshared_ifunc.so] != 1} {
274 fail "Shared libraries containing ifunc does not contain an IFUNC symbol"
275 set fails [expr $fails + 1]
276}
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277if {[contains_ifunc_symbol tmpdir/local_prog] != 1} {
278 fail "Local ifunc-using executable does not contain an IFUNC symbol"
279 set fails [expr $fails + 1]
280}
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281if {[contains_ifunc_symbol tmpdir/static_prog] != 1} {
282 fail "Static ifunc-using executable does not contain an IFUNC symbol"
283 set fails [expr $fails + 1]
284}
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285if {[contains_ifunc_symbol tmpdir/dynamic_prog] != 0} {
286 fail "Dynamic ifunc-using executable contains an IFUNC symbol"
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287 set fails [expr $fails + 1]
288}
289if {[contains_ifunc_symbol tmpdir/static_nonifunc_prog] != 0} {
290 fail "Static non-ifunc-using executable contains an IFUNC symbol"
291 set fails [expr $fails + 1]
292}
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293if {[contains_ifunc_symbol tmpdir/test-1] != 0} {
294 fail "test-1 contains IFUNC symbols"
295 set fails [expr $fails + 1]
296}
297if {[contains_ifunc_symbol tmpdir/libtest-2.so] != 0} {
298 fail "libtest-2.so contains IFUNC symbols"
299 set fails [expr $fails + 1]
300}
d8045f23 301
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302# The linked ifunc using executables and shared libraries should contain
303# a dynamic reloc referencing the IFUNC symbol. (Even the static
304# executable which should have a dynamic section created for it). The
305# non-ifunc using executable should not.
d8045f23 306
cbe950e9
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307if {[contains_irelative_reloc tmpdir/libshared_ifunc.so] != 1} {
308 fail "ifunc-using shared library does not contain R_*_IRELATIVE relocation"
309 set fails [expr $fails + 1]
310}
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311if {[contains_irelative_reloc tmpdir/local_prog] != 1} {
312 fail "Local ifunc-using executable does not contain R_*_IRELATIVE relocation"
313 set fails [expr $fails + 1]
314}
cbe950e9
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315if {[contains_irelative_reloc tmpdir/static_prog] != 1} {
316 fail "Static ifunc-using executable does not contain R_*_IRELATIVE relocation"
d8045f23
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317 set fails [expr $fails + 1]
318}
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319if {[contains_ifunc_reloc tmpdir/dynamic_prog] != 0} {
320 fail "Dynamic ifunc-using executable contains a reloc against an IFUNC symbol"
d8045f23
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321 set fails [expr $fails + 1]
322}
323if {[contains_ifunc_reloc tmpdir/static_nonifunc_prog] == 1} {
324 fail "Static non-ifunc-using executable contains a reloc against an IFUNC symbol!"
325 set fails [expr $fails + 1]
326}
327
328if { $fails == 0 } {
329 pass "Checking ifunc binaries"
330}
331
332# Clean up, unless we are being verbose, in which case we leave the files available.
333if { $verbose < 1 } {
334 remote_file host delete "tmpdir/shared_prog.o"
335 remote_file host delete "tmpdir/static_prog.o"
336 remote_file host delete "tmpdir/shared_ifunc.o"
337 remote_file host delete "tmpdir/static_ifunc.o"
338 remote_file host delete "tmpdir/static_noifunc.o"
339 remote_file host delete "tmpdir/libshared_ifunc.so"
340 remote_file host delete "tmpdir/libifunc.a"
341 remote_file host delete "tmpdir/dynamic_prog"
e054468f 342 remote_file host delete "tmpdir/local_prog"
d8045f23
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343 remote_file host delete "tmpdir/static_prog"
344 remote_file host delete "tmpdir/static_nonifunc_prog"
345}
cbe950e9
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346
347set test_list [lsort [glob -nocomplain $srcdir/$subdir/*.d]]
348foreach t $test_list {
349 # We need to strip the ".d", but can leave the dirname.
350 verbose [file rootname $t]
351 run_dump_test [file rootname $t]
352}
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