diff options
Diffstat (limited to 'ld/testsuite/ld-ifunc/ifunc.exp')
| -rw-r--r-- | ld/testsuite/ld-ifunc/ifunc.exp | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/ld/testsuite/ld-ifunc/ifunc.exp b/ld/testsuite/ld-ifunc/ifunc.exp new file mode 100644 index 0000000..2ba5da1 --- /dev/null +++ b/ld/testsuite/ld-ifunc/ifunc.exp @@ -0,0 +1,254 @@ +# Expect script for linker support of IFUNC symbols and relocations. +# +# Copyright 2009 Free Software Foundation, Inc. +# Contributed by Red Hat. +# +# This file is part of the GNU Binutils. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, +# MA 02110-1301, USA. +# +# Written by Nick Clifton <nickc@redhat.com> + + +# IFUNC support has only been implemented for the x86_64 and ix86 so far. +if {! ( [istarget "x86_64-*-elf*"] + || [istarget "x86_64-*-linux*"] + || [istarget "i?86-*-elf*"] + || [istarget "i?86-*-linux*"]) } { + verbose "IFUNC tests not run - target does not support IFUNC" + return +} + +# We need a native system. FIXME: Strictly speaking this +# is not true, we just need to know how to create a fully +# linked executable, including the C and Z libraries, using +# the linker that is under test. +if ![isnative] { + verbose "IFUNC tests not run - not a native toolchain" + return +} + +# We need a working compiler. (Strictly speaking this is +# not true, we could use target specific assembler files). +if { [which $CC] == 0 } { + verbose "IFUNC tests not run - no compiler available" + return +} + +# A procedure to check the OS/ABI field in the ELF header of a binary file. +proc check_osabi { binary_file expected_osabi } { + global READELF + global READELFFLAGS + + catch "exec $READELF $READELFFLAGS --file-header $binary_file > readelf.out" got + + if ![string match "" $got] then { + verbose "proc check_osabi: Readelf produced unexpected out processing $binary_file: $got" + return 0 + } + + if { ![regexp "\n\[ \]*OS/ABI:\[ \]*(.+)\n\[ \]*ABI" \ + [file_contents readelf.out] nil osabi] } { + verbose "proc check_osabi: Readelf failed to extract an ELF header from $binary_file" + return 0 + } + + if { $osabi == $expected_osabi } { + return 1 + } + + verbose "Expected OSABI: $expected_osabi, Obtained osabi: $osabi" + + return 0 +} + +# A procedure to confirm that a file contains the IFUNC symbol. +# Returns -1 upon error, 0 if the symbol was not found and 1 if it was found. +proc contains_ifunc_symbol { binary_file } { + global READELF + global READELFFLAGS + + catch "exec $READELF $READELFFLAGS --symbols $binary_file > readelf.out" got + + if ![string match "" $got] then { + verbose "proc contains_ifunc_symbol: Readelf produced unexpected out processing $binary_file: $got" + return -1 + } + + # Look for a line like this: + # 58: 0000000000400600 30 IFUNC GLOBAL DEFAULT 12 library_func2 + + if { ![regexp ".*\[ \]*IFUNC\[ \]+GLOBAL\[ \]+DEFAULT\[ \]+\[UND0-9\]+\[ \]+library_func2\n" [file_contents readelf.out]] } { + return 0 + } + + return 1 +} + +# A procedure to confirm that a file contains a relocation that references an IFUNC symbol. +# Returns -1 upon error, 0 if the reloc was not found and 1 if it was found. +proc contains_ifunc_reloc { binary_file } { + global READELF + global READELFFLAGS + + catch "exec $READELF $READELFFLAGS --relocs $binary_file > readelf.out" got + + if ![string match "" $got] then { + verbose "proc contains_ifunc_reloc: Readelf produced unexpected out processing $binary_file: $got" + return -1 + } + + if [string match "" [file_contents readelf.out]] then { + verbose "No relocs found in $binary_file" + return 0 + } + + if { ![regexp "\\(\\)" [file_contents readelf.out]] } { + return 0 + } + + return 1 +} + +set fails 0 + +# Create the object files, libraries and executables. +if ![ld_compile "$CC -c -shared -fPIC" "$srcdir/$subdir/prog.c" "tmpdir/shared_prog.o"] { + fail "Could not create a shared object file" + set fails [expr $fails + 1] +} +if ![ld_compile "$CC -c -static" "$srcdir/$subdir/prog.c" "tmpdir/static_prog.o"] { + fail "Could not create a static object file" + set fails [expr $fails + 1] +} +if ![ld_compile "$CC -c -shared -fPIC -DWITH_IFUNC" "$srcdir/$subdir/lib.c" "tmpdir/shared_ifunc.o"] { + fail "Could not create an object file containing an IFUNC symbol" + set fails [expr $fails + 1] +} +if ![ld_compile "$CC -c -static -DWITH_IFUNC" "$srcdir/$subdir/lib.c" "tmpdir/static_ifunc.o"] { + fail "Could not create a static object file containing an IFUNC symbol" + set fails [expr $fails + 1] +} +if ![ld_compile "$CC -c -static -DWITHOUT_IFUNC" "$srcdir/$subdir/lib.c" "tmpdir/static_noifunc.o"] { + fail "Could not create an ordinary static object file" + set fails [expr $fails + 1] +} + +if { $fails != 0 } { + return +} + +if ![ld_simple_link $ld "tmpdir/libshared_ifunc.so" "-shared tmpdir/shared_ifunc.o"] { + fail "Could not create a shared library containing an IFUNC symbol" + set fails [expr $fails + 1] +} +if ![ar_simple_create $ar "" "tmpdir/libifunc.a" "tmpdir/static_ifunc.o"] { + fail "Could not create a static library containing an IFUNC symbol" + set fails [expr $fails + 1] +} + +if { $fails != 0 } { + return +} + +if ![default_ld_link $ld "tmpdir/dynamic_prog" "-Ltmpdir tmpdir/shared_prog.o -Bdynamic -lshared_ifunc -rpath ./tmpdir"] { + fail "Could not link a dynamic executable" + set fails [expr $fails + 1] +} +if ![default_ld_link $ld "tmpdir/static_prog" "-Ltmpdir tmpdir/static_prog.o -lifunc"] { + fail "Could not link a static executable" + set fails [expr $fails + 1] +} +if ![default_ld_link $ld "tmpdir/static_nonifunc_prog" "-Ltmpdir tmpdir/static_prog.o tmpdir/static_noifunc.o"] { + fail "Could not link a non-ifunc using static executable" + set fails [expr $fails + 1] +} + +if { $fails == 0 } { + pass "Building ifunc binaries" + set fails 0 +} else { + return +} + +# Check the executables. +# +# The linked ifunc using executables should have an OSABI field of LINUX +# The linked non-ifunc using executable should have an OSABI field of NONE (aka System V). + +if {! [check_osabi tmpdir/static_prog {UNIX - Linux}]} { + fail "Static ifunc-using executable does not have an OS/ABI field of LINUX" + set fails [expr $fails + 1] +} +if {! [check_osabi tmpdir/dynamic_prog {UNIX - Linux}]} { + fail "Dynamic ifunc-using executable does not have an OS/ABI field of LINUX" + set fails [expr $fails + 1] +} +if {! [check_osabi tmpdir/static_nonifunc_prog {UNIX - System V}]} { + fail "Static non-ifunc-using executable does not have an OS/ABI field of System V" + set fails [expr $fails + 1] +} + +# The linked ifunc using executables should contain an IFUNC symbol, +# The non-ifunc using executable should not. + +if {[contains_ifunc_symbol tmpdir/static_prog] != 1} { + fail "Static ifunc-using executable does not contain an IFUNC symbol" + set fails [expr $fails + 1] +} +if {[contains_ifunc_symbol tmpdir/dynamic_prog] != 1} { + fail "Dynamic ifunc-using executable does not contain an IFUNC symbol" + set fails [expr $fails + 1] +} +if {[contains_ifunc_symbol tmpdir/static_nonifunc_prog] != 0} { + fail "Static non-ifunc-using executable contains an IFUNC symbol" + set fails [expr $fails + 1] +} + +# The linked ifunc using executablea should contain a dynamic reloc referencing the IFUNC symbol. +# (Even the static executable which should have a dynamic section created for it). +# The non-ifunc using executable should not. + +if {[contains_ifunc_reloc tmpdir/static_prog] != 1} { + fail "Static ifunc-using executable does not contain a reloc against an IFUNC symbol" + set fails [expr $fails + 1] +} +if {[contains_ifunc_reloc tmpdir/dynamic_prog] != 1} { + fail "Dynamic ifunc-using executable does not contain a reloc against an IFUNC symbol" + set fails [expr $fails + 1] +} +if {[contains_ifunc_reloc tmpdir/static_nonifunc_prog] == 1} { + fail "Static non-ifunc-using executable contains a reloc against an IFUNC symbol!" + set fails [expr $fails + 1] +} + +if { $fails == 0 } { + pass "Checking ifunc binaries" +} + +# Clean up, unless we are being verbose, in which case we leave the files available. +if { $verbose < 1 } { + remote_file host delete "tmpdir/shared_prog.o" + remote_file host delete "tmpdir/static_prog.o" + remote_file host delete "tmpdir/shared_ifunc.o" + remote_file host delete "tmpdir/static_ifunc.o" + remote_file host delete "tmpdir/static_noifunc.o" + remote_file host delete "tmpdir/libshared_ifunc.so" + remote_file host delete "tmpdir/libifunc.a" + remote_file host delete "tmpdir/dynamic_prog" + remote_file host delete "tmpdir/static_prog" + remote_file host delete "tmpdir/static_nonifunc_prog" +} |