| # Expect script for linker support of IFUNC symbols and relocations. |
| # |
| # Copyright (C) 2009-2016 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 ix86, x86_64, powerpc, |
| # aarch64, sparc, and S/390 so far. |
| if {!(([istarget "i?86-*-*"] |
| || [istarget "x86_64-*-*"] |
| || [istarget "powerpc*-*-*"] |
| || [istarget "aarch64*-*-*"] |
| || [istarget "sparc*-*-*"] |
| || [istarget "s390*-*-*"]) |
| && ([istarget "*-*-elf*"] |
| || [istarget "*-*-nacl*"] |
| || (([istarget "*-*-linux*"] |
| || [istarget "*-*-gnu*"]) |
| && ![istarget "*-*-*aout*"] |
| && ![istarget "*-*-*oldld*"]))) } { |
| 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 |
| # with perhaps some other info between the visibility and section |
| |
| 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 the R_*_IRELATIVE |
| # relocation. |
| # Returns -1 upon error, 0 if the relocation was not found and 1 if |
| # it was found. |
| proc contains_irelative_reloc { binary_file } { |
| global READELF |
| global READELFFLAGS |
| |
| catch "exec $READELF $READELFFLAGS --relocs --wide $binary_file > readelf.out" got |
| |
| if ![string match "" $got] then { |
| verbose "proc contains_irelative_reloc: Readelf produced unexpected out processing $binary_file: $got" |
| return -1 |
| } |
| |
| # Look for a line like this: |
| # 0000000000600ab0 0000000000000025 R_X86_64_IRELATIVE 000000000040061c |
| # 080496f4 0000002a R_386_IRELATIVE |
| |
| |
| if { ![regexp "\[0-9a-f\]+\[ \]+\[0-9a-f\]+\[ \]+R_\[_0-9A-Z\]+_IREL(|ATIVE)\[ \]*\[0-9a-f\]*\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 -fPIC" "$srcdir/$subdir/prog.c" "tmpdir/shared_prog.o"] { |
| fail "Could not create a PIC object file" |
| set fails [expr $fails + 1] |
| } |
| if ![ld_compile "$CC -c" "$srcdir/$subdir/prog.c" "tmpdir/static_prog.o"] { |
| fail "Could not create a non-PIC object file" |
| set fails [expr $fails + 1] |
| } |
| if ![ld_compile "$CC -c -fPIC -DWITH_IFUNC" "$srcdir/$subdir/lib.c" "tmpdir/shared_ifunc.o"] { |
| fail "Could not create a PIC object file containing an IFUNC symbol" |
| set fails [expr $fails + 1] |
| } |
| if ![ld_compile "$CC -c -DWITH_IFUNC" "$srcdir/$subdir/lib.c" "tmpdir/static_ifunc.o"] { |
| fail "Could not create a non-PIC object file containing an IFUNC symbol" |
| set fails [expr $fails + 1] |
| } |
| if ![ld_compile "$CC -c -DWITHOUT_IFUNC" "$srcdir/$subdir/lib.c" "tmpdir/static_noifunc.o"] { |
| fail "Could not create an ordinary non-PIC object file" |
| set fails [expr $fails + 1] |
| } |
| if ![ld_assemble $as "$srcdir/ld-elf/empty.s" "tmpdir/empty.o"] { |
| fail "Could not create an empty object file" |
| set fails [expr $fails + 1] |
| } |
| if ![ld_compile "$CC -c" "$srcdir/$subdir/test-1.c" "tmpdir/test-1.o"] { |
| fail "Could not create test-1.o" |
| set fails [expr $fails + 1] |
| } |
| if ![ld_compile "$CC -fPIC -c" "$srcdir/$subdir/test-2.c" "tmpdir/test-2.o"] { |
| fail "Could not create test-2.o" |
| 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/local_prog" "-Ltmpdir tmpdir/static_prog.o -lifunc"] { |
| fail "Could not link a dynamic executable using local ifunc" |
| set fails [expr $fails + 1] |
| } |
| if ![default_ld_link $ld "tmpdir/static_prog" "-static -Ltmpdir tmpdir/static_prog.o -lifunc"] { |
| fail "Could not link a static executable" |
| set fails [expr $fails + 1] |
| } |
| if ![ld_simple_link $ld "tmpdir/static_nonifunc_prog" "-static tmpdir/empty.o"] { |
| fail "Could not link a non-ifunc using static executable" |
| set fails [expr $fails + 1] |
| } |
| if ![default_ld_link $ld "tmpdir/test-1" "tmpdir/test-1.o tmpdir/libshared_ifunc.so"] { |
| fail "Could not link test-1" |
| set fails [expr $fails + 1] |
| } |
| if ![ld_simple_link $ld "tmpdir/libtest-2.so" "-shared tmpdir/test-2.o"] { |
| fail "Could not link libtest-2.so" |
| set fails [expr $fails + 1] |
| } |
| |
| if { $fails == 0 } { |
| pass "Building ifunc binaries" |
| set fails 0 |
| } else { |
| return |
| } |
| |
| # Check the executables and shared libraries |
| # |
| # The linked ifunc using executables and the shared library containing |
| # ifunc should have an OSABI field of GNU. The linked non-ifunc using |
| # executable should have an OSABI field of NONE (aka System V). |
| |
| if {! [check_osabi tmpdir/libshared_ifunc.so {UNIX - GNU}]} { |
| fail "Shared libraries containing ifunc does not have an OS/ABI field of GNU" |
| set fails [expr $fails + 1] |
| } |
| if {! [check_osabi tmpdir/local_prog {UNIX - GNU}]} { |
| fail "Local ifunc-using executable does not have an OS/ABI field of GNU" |
| set fails [expr $fails + 1] |
| } |
| if {! [check_osabi tmpdir/static_prog {UNIX - GNU}]} { |
| fail "Static ifunc-using executable does not have an OS/ABI field of GNU" |
| set fails [expr $fails + 1] |
| } |
| if {! [check_osabi tmpdir/dynamic_prog {UNIX - System V}]} { |
| fail "Dynamic ifunc-using executable does not have an OS/ABI field of System V" |
| 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 and the shared library containing |
| # ifunc should contain an IFUNC symbol. The non-ifunc using executable |
| # should not. |
| |
| if {[contains_ifunc_symbol tmpdir/libshared_ifunc.so] != 1} { |
| fail "Shared libraries containing ifunc does not contain an IFUNC symbol" |
| set fails [expr $fails + 1] |
| } |
| if {[contains_ifunc_symbol tmpdir/local_prog] != 1} { |
| fail "Local ifunc-using executable does not contain an IFUNC symbol" |
| set fails [expr $fails + 1] |
| } |
| 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] != 0} { |
| fail "Dynamic ifunc-using executable contains 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] |
| } |
| if {[contains_ifunc_symbol tmpdir/test-1] != 0} { |
| fail "test-1 contains IFUNC symbols" |
| set fails [expr $fails + 1] |
| } |
| if {[contains_ifunc_symbol tmpdir/libtest-2.so] != 0} { |
| fail "libtest-2.so contains IFUNC symbols" |
| set fails [expr $fails + 1] |
| } |
| |
| # The linked ifunc using executables and shared libraries 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_irelative_reloc tmpdir/libshared_ifunc.so] != 1} { |
| fail "ifunc-using shared library does not contain R_*_IRELATIVE relocation" |
| set fails [expr $fails + 1] |
| } |
| if {[contains_irelative_reloc tmpdir/local_prog] != 1} { |
| fail "Local ifunc-using executable does not contain R_*_IRELATIVE relocation" |
| set fails [expr $fails + 1] |
| } |
| if {[contains_irelative_reloc tmpdir/static_prog] != 1} { |
| fail "Static ifunc-using executable does not contain R_*_IRELATIVE relocation" |
| set fails [expr $fails + 1] |
| } |
| if {[contains_ifunc_reloc tmpdir/dynamic_prog] != 0} { |
| fail "Dynamic ifunc-using executable contains 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/local_prog" |
| remote_file host delete "tmpdir/static_prog" |
| remote_file host delete "tmpdir/static_nonifunc_prog" |
| } |
| |
| run_cc_link_tests [list \ |
| [list \ |
| "Build libpr16467a.so" \ |
| "-shared -Wl,--version-script=pr16467a.map" \ |
| "-fPIC" \ |
| { pr16467a.c } \ |
| {} \ |
| "libpr16467a.so" \ |
| ] \ |
| [list \ |
| "Build libpr16467b.a" \ |
| "" \ |
| "-fPIC" \ |
| { pr16467b.c } \ |
| {} \ |
| "libpr16467b.a" \ |
| ] \ |
| [list \ |
| "Build libpr16467b.so" \ |
| "-shared tmpdir/pr16467b.o tmpdir/libpr16467a.so \ |
| -Wl,--version-script=pr16467b.map" \ |
| "-fPIC" \ |
| { dummy.c } \ |
| {} \ |
| "libpr16467b.so" \ |
| ] \ |
| [list \ |
| "Build libpr16467c.a" \ |
| "" \ |
| "" \ |
| { pr16467c.c } \ |
| {} \ |
| "libpr16467c.a" \ |
| ] \ |
| ] |
| |
| run_ld_link_exec_tests [] [list \ |
| [list \ |
| "Common symbol override ifunc test 1a" \ |
| "-static" \ |
| "" \ |
| { ifunc-common-1a.c ifunc-common-1b.c } \ |
| "ifunc-common-1a" \ |
| "ifunc-common-1.out" \ |
| "-g" \ |
| ] \ |
| [list \ |
| "Common symbol override ifunc test 1b" \ |
| "-static" \ |
| "" \ |
| { ifunc-common-1b.c ifunc-common-1a.c } \ |
| "ifunc-common-1b" \ |
| "ifunc-common-1.out" \ |
| "-g" \ |
| ] \ |
| ] |
| |
| set test_list [lsort [glob -nocomplain $srcdir/$subdir/*.d]] |
| foreach t $test_list { |
| # We need to strip the ".d", but can leave the dirname. |
| verbose [file rootname $t] |
| run_dump_test [file rootname $t] |
| } |
| |
| # Run-time tests which require working IFUNC support. |
| if { ![check_ifunc_available] } { |
| return |
| } |
| |
| run_cc_link_tests [list \ |
| [list \ |
| "Build ifunc-lib.so" \ |
| "-shared" \ |
| "-fPIC" \ |
| { ifunc-lib.c } \ |
| {} \ |
| "libifunc-lib.so" \ |
| ] \ |
| ] |
| |
| run_ld_link_exec_tests [] [list \ |
| [list \ |
| "Run pr16467" \ |
| "tmpdir/pr16467c.o tmpdir/libpr16467b.so tmpdir/libpr16467a.so" \ |
| "" \ |
| { dummy.c } \ |
| "pr16467" \ |
| "pr16467.out" \ |
| "" \ |
| ] \ |
| [list \ |
| "Run ifunc-main" \ |
| "tmpdir/libifunc-lib.so" \ |
| "" \ |
| { ifunc-main.c } \ |
| "ifunc-main" \ |
| "ifunc-main.out" \ |
| ] \ |
| [list \ |
| "Run ifunc-main with -fpic" \ |
| "tmpdir/libifunc-lib.so" \ |
| "" \ |
| { ifunc-main.c } \ |
| "ifunc-main" \ |
| "ifunc-main.out" \ |
| "-fpic" \ |
| ] \ |
| ] |
| |
| # Run-time tests which require working ifunc attribute support. |
| if { ![check_ifunc_attribute_available] } { |
| return |
| } |
| |
| run_cc_link_tests [list \ |
| [list \ |
| "Build pr18808a.o" \ |
| "" \ |
| "" \ |
| { pr18808a.c } \ |
| "" \ |
| "" \ |
| ] \ |
| [list \ |
| "Build libpr18808.so" \ |
| "-shared" \ |
| "-fPIC -O2 -g" \ |
| { pr18808b.c } \ |
| {} \ |
| "libpr18808.so" \ |
| ] \ |
| [list \ |
| "Build pr18841a.o" \ |
| "" \ |
| "" \ |
| { pr18841a.c } \ |
| "" \ |
| "" \ |
| ] \ |
| [list \ |
| "Build libpr18841b.so" \ |
| "-shared" \ |
| "-fPIC -O0 -g" \ |
| { pr18841b.c } \ |
| {} \ |
| "libpr18841b.so" \ |
| ] \ |
| [list \ |
| "Build libpr18841c.so" \ |
| "-shared" \ |
| "-fPIC -O0 -g" \ |
| { pr18841c.c } \ |
| {} \ |
| "libpr18841c.so" \ |
| ] \ |
| [list \ |
| "Build libpr19784a.so" \ |
| "-shared -Wl,-Bsymbolic-functions" \ |
| "-fPIC -O2 -g" \ |
| { pr19784b.c pr19784c.c } \ |
| {} \ |
| "libpr19784a.so" \ |
| ] \ |
| [list \ |
| "Build libpr19784b.so" \ |
| "-shared -Wl,-Bsymbolic-functions" \ |
| "-fPIC -O2 -g" \ |
| { pr19784c.c pr19784b.c } \ |
| {} \ |
| "libpr19784b.so" \ |
| ] \ |
| [list \ |
| "Build pr19784a.o" \ |
| "" \ |
| "" \ |
| { pr19784a.c } \ |
| "" \ |
| "" \ |
| ] \ |
| ] |
| |
| run_ld_link_exec_tests [] [list \ |
| [list \ |
| "Run pr18808" \ |
| "tmpdir/pr18808a.o tmpdir/libpr18808.so" \ |
| "" \ |
| { dummy.c } \ |
| "pr18808" \ |
| "pr18808.out" \ |
| ] \ |
| [list \ |
| "Run pr18841 with libpr18841b.so" \ |
| "tmpdir/pr18841a.o tmpdir/libpr18841b.so" \ |
| "" \ |
| { dummy.c } \ |
| "pr18841b" \ |
| "pr18841.out" \ |
| ] \ |
| [list \ |
| "Run pr18841 with libpr18841c.so" \ |
| "--as-needed tmpdir/pr18841a.o tmpdir/libpr18841c.so" \ |
| "" \ |
| { dummy.c } \ |
| "pr18841c" \ |
| "pr18841.out" \ |
| ] \ |
| [list \ |
| "Run pr19784a" \ |
| "tmpdir/pr19784a.o tmpdir/libpr19784a.so" \ |
| "" \ |
| { dummy.c } \ |
| "pr19784a" \ |
| "pass.out" \ |
| ] \ |
| [list \ |
| "Run pr19784b" \ |
| "--as-needed tmpdir/pr19784a.o tmpdir/libpr19784b.so" \ |
| "" \ |
| { dummy.c } \ |
| "pr19784b" \ |
| "pass.out" \ |
| ] \ |
| ] |
