| 1 |
70 |
khays |
# Expect script for linker support of IFUNC symbols and relocations.
|
| 2 |
|
|
#
|
| 3 |
|
|
# Copyright 2009, 2010 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
|
| 24 |
|
|
|
| 25 |
|
|
|
| 26 |
|
|
# IFUNC support has only been implemented for the ix86, x86_64, powerpc,
|
| 27 |
|
|
# and sparc so far.
|
| 28 |
|
|
if {!(([istarget "i?86-*-*"]
|
| 29 |
|
|
|| [istarget "x86_64-*-*"]
|
| 30 |
|
|
|| [istarget "powerpc*-*-*"]
|
| 31 |
|
|
|| [istarget "sparc*-*-*"])
|
| 32 |
|
|
&& ([istarget "*-*-elf*"]
|
| 33 |
|
|
|| (([istarget "*-*-linux*"]
|
| 34 |
|
|
|| [istarget "*-*-gnu*"])
|
| 35 |
|
|
&& ![istarget "*-*-*aout*"]
|
| 36 |
|
|
&& ![istarget "*-*-*oldld*"]))) } {
|
| 37 |
|
|
verbose "IFUNC tests not run - target does not support IFUNC"
|
| 38 |
|
|
return
|
| 39 |
|
|
}
|
| 40 |
|
|
|
| 41 |
|
|
# We need a native system. FIXME: Strictly speaking this
|
| 42 |
|
|
# is not true, we just need to know how to create a fully
|
| 43 |
|
|
# linked executable, including the C and Z libraries, using
|
| 44 |
|
|
# the linker that is under test.
|
| 45 |
|
|
if ![isnative] {
|
| 46 |
|
|
verbose "IFUNC tests not run - not a native toolchain"
|
| 47 |
|
|
return
|
| 48 |
|
|
}
|
| 49 |
|
|
|
| 50 |
|
|
# We need a working compiler. (Strictly speaking this is
|
| 51 |
|
|
# not true, we could use target specific assembler files).
|
| 52 |
|
|
if { [which $CC] == 0 } {
|
| 53 |
|
|
verbose "IFUNC tests not run - no compiler available"
|
| 54 |
|
|
return
|
| 55 |
|
|
}
|
| 56 |
|
|
|
| 57 |
|
|
# A procedure to check the OS/ABI field in the ELF header of a binary file.
|
| 58 |
|
|
proc check_osabi { binary_file expected_osabi } {
|
| 59 |
|
|
global READELF
|
| 60 |
|
|
global READELFFLAGS
|
| 61 |
|
|
|
| 62 |
|
|
catch "exec $READELF $READELFFLAGS --file-header $binary_file > readelf.out" got
|
| 63 |
|
|
|
| 64 |
|
|
if ![string match "" $got] then {
|
| 65 |
|
|
verbose "proc check_osabi: Readelf produced unexpected out processing $binary_file: $got"
|
| 66 |
|
|
return 0
|
| 67 |
|
|
}
|
| 68 |
|
|
|
| 69 |
|
|
if { ![regexp "\n\[ \]*OS/ABI:\[ \]*(.+)\n\[ \]*ABI" \
|
| 70 |
|
|
[file_contents readelf.out] nil osabi] } {
|
| 71 |
|
|
verbose "proc check_osabi: Readelf failed to extract an ELF header from $binary_file"
|
| 72 |
|
|
return 0
|
| 73 |
|
|
}
|
| 74 |
|
|
|
| 75 |
|
|
if { $osabi == $expected_osabi } {
|
| 76 |
|
|
return 1
|
| 77 |
|
|
}
|
| 78 |
|
|
|
| 79 |
|
|
verbose "Expected OSABI: $expected_osabi, Obtained osabi: $osabi"
|
| 80 |
|
|
|
| 81 |
|
|
return 0
|
| 82 |
|
|
}
|
| 83 |
|
|
|
| 84 |
|
|
# A procedure to confirm that a file contains the IFUNC symbol.
|
| 85 |
|
|
# Returns -1 upon error, 0 if the symbol was not found and 1 if it was found.
|
| 86 |
|
|
proc contains_ifunc_symbol { binary_file } {
|
| 87 |
|
|
global READELF
|
| 88 |
|
|
global READELFFLAGS
|
| 89 |
|
|
|
| 90 |
|
|
catch "exec $READELF $READELFFLAGS --symbols $binary_file > readelf.out" got
|
| 91 |
|
|
|
| 92 |
|
|
if ![string match "" $got] then {
|
| 93 |
|
|
verbose "proc contains_ifunc_symbol: Readelf produced unexpected out processing $binary_file: $got"
|
| 94 |
|
|
return -1
|
| 95 |
|
|
}
|
| 96 |
|
|
|
| 97 |
|
|
# Look for a line like this:
|
| 98 |
|
|
# 58: 0000000000400600 30 IFUNC GLOBAL DEFAULT 12 library_func2
|
| 99 |
|
|
|
| 100 |
|
|
if { ![regexp ".*\[ \]*IFUNC\[ \]+GLOBAL\[ \]+DEFAULT\[ \]+\[UND0-9\]+\[ \]+library_func2\n" [file_contents readelf.out]] } {
|
| 101 |
|
|
return 0
|
| 102 |
|
|
}
|
| 103 |
|
|
|
| 104 |
|
|
return 1
|
| 105 |
|
|
}
|
| 106 |
|
|
|
| 107 |
|
|
# A procedure to confirm that a file contains the R_*_IRELATIVE
|
| 108 |
|
|
# relocation.
|
| 109 |
|
|
# Returns -1 upon error, 0 if the relocation was not found and 1 if
|
| 110 |
|
|
# it was found.
|
| 111 |
|
|
proc contains_irelative_reloc { binary_file } {
|
| 112 |
|
|
global READELF
|
| 113 |
|
|
global READELFFLAGS
|
| 114 |
|
|
|
| 115 |
|
|
catch "exec $READELF $READELFFLAGS --relocs --wide $binary_file > readelf.out" got
|
| 116 |
|
|
|
| 117 |
|
|
if ![string match "" $got] then {
|
| 118 |
|
|
verbose "proc contains_irelative_reloc: Readelf produced unexpected out processing $binary_file: $got"
|
| 119 |
|
|
return -1
|
| 120 |
|
|
}
|
| 121 |
|
|
|
| 122 |
|
|
# Look for a line like this:
|
| 123 |
|
|
# 0000000000600ab0 0000000000000025 R_X86_64_IRELATIVE 000000000040061c
|
| 124 |
|
|
# 080496f4 0000002a R_386_IRELATIVE
|
| 125 |
|
|
|
| 126 |
|
|
|
| 127 |
|
|
if { ![regexp "\[0-9a-f\]+\[ \]+\[0-9a-f\]+\[ \]+R_\[_0-9A-Z\]+_IREL(|ATIVE)\[ \]*\[0-9a-f\]*\n" [file_contents readelf.out]] } {
|
| 128 |
|
|
return 0
|
| 129 |
|
|
}
|
| 130 |
|
|
|
| 131 |
|
|
return 1
|
| 132 |
|
|
}
|
| 133 |
|
|
|
| 134 |
|
|
# A procedure to confirm that a file contains a relocation that references an IFUNC symbol.
|
| 135 |
|
|
# Returns -1 upon error, 0 if the reloc was not found and 1 if it was found.
|
| 136 |
|
|
proc contains_ifunc_reloc { binary_file } {
|
| 137 |
|
|
global READELF
|
| 138 |
|
|
global READELFFLAGS
|
| 139 |
|
|
|
| 140 |
|
|
catch "exec $READELF $READELFFLAGS --relocs $binary_file > readelf.out" got
|
| 141 |
|
|
|
| 142 |
|
|
if ![string match "" $got] then {
|
| 143 |
|
|
verbose "proc contains_ifunc_reloc: Readelf produced unexpected out processing $binary_file: $got"
|
| 144 |
|
|
return -1
|
| 145 |
|
|
}
|
| 146 |
|
|
|
| 147 |
|
|
if [string match "" [file_contents readelf.out]] then {
|
| 148 |
|
|
verbose "No relocs found in $binary_file"
|
| 149 |
|
|
return 0
|
| 150 |
|
|
}
|
| 151 |
|
|
|
| 152 |
|
|
if { ![regexp "\\(\\)" [file_contents readelf.out]] } {
|
| 153 |
|
|
return 0
|
| 154 |
|
|
}
|
| 155 |
|
|
|
| 156 |
|
|
return 1
|
| 157 |
|
|
}
|
| 158 |
|
|
|
| 159 |
|
|
set fails 0
|
| 160 |
|
|
|
| 161 |
|
|
# Create the object files, libraries and executables.
|
| 162 |
|
|
if ![ld_compile "$CC -c -fPIC" "$srcdir/$subdir/prog.c" "tmpdir/shared_prog.o"] {
|
| 163 |
|
|
fail "Could not create a PIC object file"
|
| 164 |
|
|
set fails [expr $fails + 1]
|
| 165 |
|
|
}
|
| 166 |
|
|
if ![ld_compile "$CC -c" "$srcdir/$subdir/prog.c" "tmpdir/static_prog.o"] {
|
| 167 |
|
|
fail "Could not create a non-PIC object file"
|
| 168 |
|
|
set fails [expr $fails + 1]
|
| 169 |
|
|
}
|
| 170 |
|
|
if ![ld_compile "$CC -c -fPIC -DWITH_IFUNC" "$srcdir/$subdir/lib.c" "tmpdir/shared_ifunc.o"] {
|
| 171 |
|
|
fail "Could not create a PIC object file containing an IFUNC symbol"
|
| 172 |
|
|
set fails [expr $fails + 1]
|
| 173 |
|
|
}
|
| 174 |
|
|
if ![ld_compile "$CC -c -DWITH_IFUNC" "$srcdir/$subdir/lib.c" "tmpdir/static_ifunc.o"] {
|
| 175 |
|
|
fail "Could not create a non-PIC object file containing an IFUNC symbol"
|
| 176 |
|
|
set fails [expr $fails + 1]
|
| 177 |
|
|
}
|
| 178 |
|
|
if ![ld_compile "$CC -c -DWITHOUT_IFUNC" "$srcdir/$subdir/lib.c" "tmpdir/static_noifunc.o"] {
|
| 179 |
|
|
fail "Could not create an ordinary non-PIC object file"
|
| 180 |
|
|
set fails [expr $fails + 1]
|
| 181 |
|
|
}
|
| 182 |
|
|
if ![ld_assemble $as "$srcdir/ld-elf/empty.s" "tmpdir/empty.o"] {
|
| 183 |
|
|
fail "Could not create an empty object file"
|
| 184 |
|
|
set fails [expr $fails + 1]
|
| 185 |
|
|
}
|
| 186 |
|
|
if ![ld_compile "$CC -c" "$srcdir/$subdir/test-1.c" "tmpdir/test-1.o"] {
|
| 187 |
|
|
fail "Could not create test-1.o"
|
| 188 |
|
|
set fails [expr $fails + 1]
|
| 189 |
|
|
}
|
| 190 |
|
|
if ![ld_compile "$CC -fPIC -c" "$srcdir/$subdir/test-2.c" "tmpdir/test-2.o"] {
|
| 191 |
|
|
fail "Could not create test-2.o"
|
| 192 |
|
|
set fails [expr $fails + 1]
|
| 193 |
|
|
}
|
| 194 |
|
|
|
| 195 |
|
|
if { $fails != 0 } {
|
| 196 |
|
|
return
|
| 197 |
|
|
}
|
| 198 |
|
|
|
| 199 |
|
|
if ![ld_simple_link $ld "tmpdir/libshared_ifunc.so" "-shared tmpdir/shared_ifunc.o"] {
|
| 200 |
|
|
fail "Could not create a shared library containing an IFUNC symbol"
|
| 201 |
|
|
set fails [expr $fails + 1]
|
| 202 |
|
|
}
|
| 203 |
|
|
if ![ar_simple_create $ar "" "tmpdir/libifunc.a" "tmpdir/static_ifunc.o"] {
|
| 204 |
|
|
fail "Could not create a static library containing an IFUNC symbol"
|
| 205 |
|
|
set fails [expr $fails + 1]
|
| 206 |
|
|
}
|
| 207 |
|
|
|
| 208 |
|
|
if { $fails != 0 } {
|
| 209 |
|
|
return
|
| 210 |
|
|
}
|
| 211 |
|
|
|
| 212 |
|
|
if ![default_ld_link $ld "tmpdir/dynamic_prog" "-Ltmpdir tmpdir/shared_prog.o -Bdynamic -lshared_ifunc -rpath ./tmpdir"] {
|
| 213 |
|
|
fail "Could not link a dynamic executable"
|
| 214 |
|
|
set fails [expr $fails + 1]
|
| 215 |
|
|
}
|
| 216 |
|
|
if ![default_ld_link $ld "tmpdir/local_prog" "-Ltmpdir tmpdir/static_prog.o -lifunc"] {
|
| 217 |
|
|
fail "Could not link a dynamic executable using local ifunc"
|
| 218 |
|
|
set fails [expr $fails + 1]
|
| 219 |
|
|
}
|
| 220 |
|
|
if ![default_ld_link $ld "tmpdir/static_prog" "-static -Ltmpdir tmpdir/static_prog.o -lifunc"] {
|
| 221 |
|
|
fail "Could not link a static executable"
|
| 222 |
|
|
set fails [expr $fails + 1]
|
| 223 |
|
|
}
|
| 224 |
|
|
if ![ld_simple_link $ld "tmpdir/static_nonifunc_prog" "-static tmpdir/empty.o"] {
|
| 225 |
|
|
fail "Could not link a non-ifunc using static executable"
|
| 226 |
|
|
set fails [expr $fails + 1]
|
| 227 |
|
|
}
|
| 228 |
|
|
if ![default_ld_link $ld "tmpdir/test-1" "tmpdir/test-1.o tmpdir/libshared_ifunc.so"] {
|
| 229 |
|
|
fail "Could not link test-1"
|
| 230 |
|
|
set fails [expr $fails + 1]
|
| 231 |
|
|
}
|
| 232 |
|
|
if ![ld_simple_link $ld "tmpdir/libtest-2.so" "-shared tmpdir/test-2.o"] {
|
| 233 |
|
|
fail "Could not link libtest-2.so"
|
| 234 |
|
|
set fails [expr $fails + 1]
|
| 235 |
|
|
}
|
| 236 |
|
|
|
| 237 |
|
|
if { $fails == 0 } {
|
| 238 |
|
|
pass "Building ifunc binaries"
|
| 239 |
|
|
set fails 0
|
| 240 |
|
|
} else {
|
| 241 |
|
|
return
|
| 242 |
|
|
}
|
| 243 |
|
|
|
| 244 |
|
|
# Check the executables and shared libraries
|
| 245 |
|
|
#
|
| 246 |
|
|
# The linked ifunc using executables and the shared library containing
|
| 247 |
|
|
# ifunc should have an OSABI field of LINUX. The linked non-ifunc using
|
| 248 |
|
|
# executable should have an OSABI field of NONE (aka System V).
|
| 249 |
|
|
|
| 250 |
|
|
if {! [check_osabi tmpdir/libshared_ifunc.so {UNIX - Linux}]} {
|
| 251 |
|
|
fail "Shared libraries containing ifunc does not have an OS/ABI field of LINUX"
|
| 252 |
|
|
set fails [expr $fails + 1]
|
| 253 |
|
|
}
|
| 254 |
|
|
if {! [check_osabi tmpdir/local_prog {UNIX - Linux}]} {
|
| 255 |
|
|
fail "Local ifunc-using executable does not have an OS/ABI field of LINUX"
|
| 256 |
|
|
set fails [expr $fails + 1]
|
| 257 |
|
|
}
|
| 258 |
|
|
if {! [check_osabi tmpdir/static_prog {UNIX - Linux}]} {
|
| 259 |
|
|
fail "Static ifunc-using executable does not have an OS/ABI field of LINUX"
|
| 260 |
|
|
set fails [expr $fails + 1]
|
| 261 |
|
|
}
|
| 262 |
|
|
if {! [check_osabi tmpdir/dynamic_prog {UNIX - System V}]} {
|
| 263 |
|
|
fail "Dynamic ifunc-using executable does not have an OS/ABI field of System V"
|
| 264 |
|
|
set fails [expr $fails + 1]
|
| 265 |
|
|
}
|
| 266 |
|
|
if {! [check_osabi tmpdir/static_nonifunc_prog {UNIX - System V}]} {
|
| 267 |
|
|
fail "Static non-ifunc-using executable does not have an OS/ABI field of System V"
|
| 268 |
|
|
set fails [expr $fails + 1]
|
| 269 |
|
|
}
|
| 270 |
|
|
|
| 271 |
|
|
# The linked ifunc using executables and the shared library containing
|
| 272 |
|
|
# ifunc should contain an IFUNC symbol. The non-ifunc using executable
|
| 273 |
|
|
# should not.
|
| 274 |
|
|
|
| 275 |
|
|
if {[contains_ifunc_symbol tmpdir/libshared_ifunc.so] != 1} {
|
| 276 |
|
|
fail "Shared libraries containing ifunc does not contain an IFUNC symbol"
|
| 277 |
|
|
set fails [expr $fails + 1]
|
| 278 |
|
|
}
|
| 279 |
|
|
if {[contains_ifunc_symbol tmpdir/local_prog] != 1} {
|
| 280 |
|
|
fail "Local ifunc-using executable does not contain an IFUNC symbol"
|
| 281 |
|
|
set fails [expr $fails + 1]
|
| 282 |
|
|
}
|
| 283 |
|
|
if {[contains_ifunc_symbol tmpdir/static_prog] != 1} {
|
| 284 |
|
|
fail "Static ifunc-using executable does not contain an IFUNC symbol"
|
| 285 |
|
|
set fails [expr $fails + 1]
|
| 286 |
|
|
}
|
| 287 |
|
|
if {[contains_ifunc_symbol tmpdir/dynamic_prog] != 0} {
|
| 288 |
|
|
fail "Dynamic ifunc-using executable contains an IFUNC symbol"
|
| 289 |
|
|
set fails [expr $fails + 1]
|
| 290 |
|
|
}
|
| 291 |
|
|
if {[contains_ifunc_symbol tmpdir/static_nonifunc_prog] != 0} {
|
| 292 |
|
|
fail "Static non-ifunc-using executable contains an IFUNC symbol"
|
| 293 |
|
|
set fails [expr $fails + 1]
|
| 294 |
|
|
}
|
| 295 |
|
|
if {[contains_ifunc_symbol tmpdir/test-1] != 0} {
|
| 296 |
|
|
fail "test-1 contains IFUNC symbols"
|
| 297 |
|
|
set fails [expr $fails + 1]
|
| 298 |
|
|
}
|
| 299 |
|
|
if {[contains_ifunc_symbol tmpdir/libtest-2.so] != 0} {
|
| 300 |
|
|
fail "libtest-2.so contains IFUNC symbols"
|
| 301 |
|
|
set fails [expr $fails + 1]
|
| 302 |
|
|
}
|
| 303 |
|
|
|
| 304 |
|
|
# The linked ifunc using executables and shared libraries should contain
|
| 305 |
|
|
# a dynamic reloc referencing the IFUNC symbol. (Even the static
|
| 306 |
|
|
# executable which should have a dynamic section created for it). The
|
| 307 |
|
|
# non-ifunc using executable should not.
|
| 308 |
|
|
|
| 309 |
|
|
if {[contains_irelative_reloc tmpdir/libshared_ifunc.so] != 1} {
|
| 310 |
|
|
fail "ifunc-using shared library does not contain R_*_IRELATIVE relocation"
|
| 311 |
|
|
set fails [expr $fails + 1]
|
| 312 |
|
|
}
|
| 313 |
|
|
if {[contains_irelative_reloc tmpdir/local_prog] != 1} {
|
| 314 |
|
|
fail "Local ifunc-using executable does not contain R_*_IRELATIVE relocation"
|
| 315 |
|
|
set fails [expr $fails + 1]
|
| 316 |
|
|
}
|
| 317 |
|
|
if {[contains_irelative_reloc tmpdir/static_prog] != 1} {
|
| 318 |
|
|
fail "Static ifunc-using executable does not contain R_*_IRELATIVE relocation"
|
| 319 |
|
|
set fails [expr $fails + 1]
|
| 320 |
|
|
}
|
| 321 |
|
|
if {[contains_ifunc_reloc tmpdir/dynamic_prog] != 0} {
|
| 322 |
|
|
fail "Dynamic ifunc-using executable contains a reloc against an IFUNC symbol"
|
| 323 |
|
|
set fails [expr $fails + 1]
|
| 324 |
|
|
}
|
| 325 |
|
|
if {[contains_ifunc_reloc tmpdir/static_nonifunc_prog] == 1} {
|
| 326 |
|
|
fail "Static non-ifunc-using executable contains a reloc against an IFUNC symbol!"
|
| 327 |
|
|
set fails [expr $fails + 1]
|
| 328 |
|
|
}
|
| 329 |
|
|
|
| 330 |
|
|
if { $fails == 0 } {
|
| 331 |
|
|
pass "Checking ifunc binaries"
|
| 332 |
|
|
}
|
| 333 |
|
|
|
| 334 |
|
|
# Clean up, unless we are being verbose, in which case we leave the files available.
|
| 335 |
|
|
if { $verbose < 1 } {
|
| 336 |
|
|
remote_file host delete "tmpdir/shared_prog.o"
|
| 337 |
|
|
remote_file host delete "tmpdir/static_prog.o"
|
| 338 |
|
|
remote_file host delete "tmpdir/shared_ifunc.o"
|
| 339 |
|
|
remote_file host delete "tmpdir/static_ifunc.o"
|
| 340 |
|
|
remote_file host delete "tmpdir/static_noifunc.o"
|
| 341 |
|
|
remote_file host delete "tmpdir/libshared_ifunc.so"
|
| 342 |
|
|
remote_file host delete "tmpdir/libifunc.a"
|
| 343 |
|
|
remote_file host delete "tmpdir/dynamic_prog"
|
| 344 |
|
|
remote_file host delete "tmpdir/local_prog"
|
| 345 |
|
|
remote_file host delete "tmpdir/static_prog"
|
| 346 |
|
|
remote_file host delete "tmpdir/static_nonifunc_prog"
|
| 347 |
|
|
}
|
| 348 |
|
|
|
| 349 |
|
|
set test_list [lsort [glob -nocomplain $srcdir/$subdir/*.d]]
|
| 350 |
|
|
foreach t $test_list {
|
| 351 |
|
|
# We need to strip the ".d", but can leave the dirname.
|
| 352 |
|
|
verbose [file rootname $t]
|
| 353 |
|
|
run_dump_test [file rootname $t]
|
| 354 |
|
|
}
|
