# Expect script for linker support of IFUNC symbols and relocations.
#
-# Copyright (C) 2009-2017 Free Software Foundation, Inc.
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
# Contributed by Red Hat.
#
# This file is part of the GNU Binutils.
# 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*"]))) } {
+if { ![is_elf_format] || ![supports_gnu_osabi]
+ || [istarget alpha-*-*]
+ || [istarget arc*-*-*]
+ || [istarget am33*-*-*]
+ || [istarget bfin-*-*]
+ || [istarget cris*-*-*]
+ || [istarget frv-*-*]
+ || [istarget lm32-*-*]
+ || [istarget m32r-*-*]
+ || [istarget m68k-*-*]
+ || [istarget microblaze-*-*]
+ || [istarget mips*-*-*]
+ || [istarget mn10300-*-*]
+ || [istarget nds32*-*-*]
+ || [istarget nios2-*-*]
+ || [istarget or1k-*-*]
+ || [istarget score*-*-*]
+ || [istarget sh*-*-*]
+ || [istarget tic6x-*-*]
+ || [istarget tile*-*-*]
+ || [istarget vax-*-*] } {
verbose "IFUNC tests not run - target does not support IFUNC"
return
}
return
}
+set saved_ASFLAGS "$ASFLAGS"
+if { [istarget "i?86-*-*"] || [istarget "x86_64-*-*"] } {
+ set ASFLAGS "$ASFLAGS -mx86-used-note=no"
+}
+
+# This test does not need a compiler...
+run_dump_test "ifuncmod5"
+
+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]
+}
+
# We need a working compiler. (Strictly speaking this is
# not true, we could use target specific assembler files).
-if { [which $CC] == 0 } {
+if { ![check_compiler_available] } {
verbose "IFUNC tests not run - no compiler available"
return
}
# 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]] } {
+ if { ![regexp "\[0-9a-f\]+\[ \]+\[0-9a-f\]+\[ \]+R_(\[_0-9A-Z\]+_IREL(|ATIVE)|PARISC_IPLT)\[ \]*\[0-9a-f\]*\n" [file_contents readelf.out]] } {
return 0
}
set fails 0
+# Disable LTO for these tests.
+set cc_cmd "$CC"
+if {[check_lto_available]} {
+ append cc_cmd " -fno-lto"
+}
+
# Create the object files, libraries and executables.
-if ![ld_compile "$CC -c -fPIC" "$srcdir/$subdir/prog.c" "tmpdir/shared_prog.o"] {
+if ![ld_compile "$cc_cmd -c -fPIC" "$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"] {
+if ![ld_compile "$cc_cmd -c $NOPIE_CFLAGS" "$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"] {
+if ![ld_compile "$cc_cmd -c -fPIC -DWITH_IFUNC" "$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"] {
+if ![ld_compile "$cc_cmd -c $NOPIE_CFLAGS -DWITH_IFUNC" "$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"] {
+if ![ld_compile "$cc_cmd -c -DWITHOUT_IFUNC" "$srcdir/$subdir/lib.c" "tmpdir/static_noifunc.o"] {
fail "Could not create an ordinary non-PIC object file"
set fails [expr $fails + 1]
}
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"] {
+if ![ld_compile "$cc_cmd -c" "$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"] {
+if ![ld_compile "$cc_cmd -fPIC -c" "$srcdir/$subdir/test-2.c" "tmpdir/test-2.o"] {
fail "Could not create test-2.o"
set fails [expr $fails + 1]
}
fail "Could not link a dynamic executable"
set fails [expr $fails + 1]
}
-if ![ld_link $CC "tmpdir/local_prog" "-Wl,--no-as-needed,-rpath=./tmpdir -Ltmpdir tmpdir/static_prog.o -lifunc"] {
+if ![ld_link $CC "tmpdir/local_prog" "$NOPIE_LDFLAGS -Wl,--no-as-needed,-rpath=./tmpdir -Ltmpdir tmpdir/static_prog.o -lifunc"] {
fail "Could not link a dynamic executable using local ifunc"
set fails [expr $fails + 1]
}
-if ![ld_link $CC "tmpdir/static_prog" "-static -Ltmpdir tmpdir/static_prog.o -lifunc"] {
- fail "Could not link a static executable"
- set fails [expr $fails + 1]
+if ![string match "" $STATIC_LDFLAGS] {
+ if ![ld_link $CC "tmpdir/static_prog" "-static -Ltmpdir tmpdir/static_prog.o -lifunc"] {
+ fail "Could not link a static executable"
+ set fails [expr $fails + 1]
+ }
}
if ![ld_link $ld "tmpdir/static_nonifunc_prog" "-static tmpdir/empty.o"] {
fail "Could not link a non-ifunc using static executable"
fail "Could not link libtest-2.so"
set fails [expr $fails + 1]
}
+if ![ld_link $ld "tmpdir/libtest-2-now.so" "-shared -z now tmpdir/test-2.o"] {
+ fail "Could not link libtest-2-now.so"
+ set fails [expr $fails + 1]
+}
if { $fails == 0 } {
pass "Building ifunc binaries"
# ifunc should have an OSABI field of GNU. The linked non-ifunc using
# executable should have an OSABI field of NONE (aka System V).
-case $target_triplet in {
- { hppa*-*-linux* } { set expected_none {UNIX - GNU} }
+switch -glob $target_triplet {
+ hppa*-*-linux* { set expected_none {UNIX - GNU} }
default { set expected_none {UNIX - System V} }
}
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}]} {
+if { ![string match "" $STATIC_LDFLAGS] \
+ && ![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]
}
fail "Local ifunc-using executable does not contain an IFUNC symbol"
set fails [expr $fails + 1]
}
-if {[contains_ifunc_symbol tmpdir/static_prog] != 1} {
+if { ![string match "" $STATIC_LDFLAGS] \
+ && [contains_ifunc_symbol tmpdir/static_prog] != 1} {
fail "Static ifunc-using executable does not contain an IFUNC symbol"
set fails [expr $fails + 1]
}
fail "libtest-2.so contains IFUNC symbols"
set fails [expr $fails + 1]
}
+if {[contains_ifunc_symbol tmpdir/libtest-2-now.so] != 0} {
+ fail "libtest-2-now.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
fail "Local ifunc-using executable does not contain R_*_IRELATIVE relocation"
set fails [expr $fails + 1]
}
-if {[contains_irelative_reloc tmpdir/static_prog] != 1} {
+if { ![string match "" $STATIC_LDFLAGS] \
+ && [contains_irelative_reloc tmpdir/static_prog] != 1} {
fail "Static ifunc-using executable does not contain R_*_IRELATIVE relocation"
set fails [expr $fails + 1]
}
{} \
"libpr16467c.a" \
] \
+ [list \
+ "Build libpr16467an.so" \
+ "-shared -Wl,-z,now -Wl,--version-script=pr16467a.map" \
+ "-fPIC" \
+ { pr16467a.c } \
+ {} \
+ "libpr16467an.so" \
+ ] \
+ [list \
+ "Build libpr16467bn.so" \
+ "-shared tmpdir/pr16467b.o tmpdir/libpr16467an.so \
+ -Wl,--version-script=pr16467b.map" \
+ "-fPIC" \
+ { dummy.c } \
+ {} \
+ "libpr16467bn.so" \
+ ] \
]
run_ld_link_exec_tests [list \
] \
]
-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 $t]
-}
-
# Run-time tests which require working IFUNC support.
if { ![check_ifunc_available] } {
return
{} \
"libifunc-lib.so" \
] \
+ [list \
+ "Build ifunc-libn.so" \
+ "-shared -Wl,-z,now" \
+ "-fPIC" \
+ { ifunc-lib.c } \
+ {} \
+ "libifunc-libn.so" \
+ ] \
]
run_ld_link_exec_tests [list \
"pr16467.out" \
"" \
] \
+ [list \
+ "Run pr16467 (-z now)" \
+ "-Wl,-z,now -Wl,--no-as-needed tmpdir/pr16467c.o tmpdir/libpr16467bn.so tmpdir/libpr16467an.so" \
+ "" \
+ { dummy.c } \
+ "pr16467n" \
+ "pr16467.out" \
+ "" \
+ ] \
[list \
"Run ifunc-main" \
"-Wl,--no-as-needed tmpdir/libifunc-lib.so" \
"ifunc-main.out" \
"-fpic" \
] \
+ [list \
+ "Run ifunc-main (-z now)" \
+ "-Wl,-z,now -Wl,--no-as-needed tmpdir/libifunc-libn.so" \
+ "" \
+ { ifunc-main.c } \
+ "ifunc-mainn" \
+ "ifunc-main.out" \
+ ] \
+ [list \
+ "Run ifunc-main with PIE (-z now)" \
+ "-pie -Wl,-z,now -Wl,--no-as-needed tmpdir/libifunc-libn.so" \
+ "" \
+ { ifunc-main.c } \
+ "ifunc-mainpn" \
+ "ifunc-main.out" \
+ "-fpie" \
+ ] \
]
# Run-time tests which require working ifunc attribute support.
{} \
"libpr18808.so" \
] \
+ [list \
+ "Build libpr18808n.so" \
+ "-shared -Wl,-z,now" \
+ "-fPIC -O2 -g" \
+ { pr18808b.c } \
+ {} \
+ "libpr18808n.so" \
+ ] \
[list \
"Build pr18841a.o" \
"" \
- "" \
+ "$NOPIE_CFLAGS" \
{ pr18841a.c } \
"" \
"" \
{} \
"libpr18841c.so" \
] \
+ [list \
+ "Build libpr18841bn.so" \
+ "-Wl,-z,now -shared" \
+ "-fPIC -O0 -g" \
+ { pr18841b.c } \
+ {} \
+ "libpr18841bn.so" \
+ ] \
+ [list \
+ "Build libpr18841cn.so" \
+ "-shared" \
+ "-Wl,-z,now -fPIC -O0 -g" \
+ { pr18841c.c } \
+ {} \
+ "libpr18841cn.so" \
+ ] \
+ [list \
+ "Build libpr23169a.so" \
+ "-shared" \
+ "-fPIC -O2 -g" \
+ { pr23169a.c } \
+ {} \
+ "libpr23169a.so" \
+ ] \
+ [list \
+ "Build libpr23169b.so" \
+ "-shared -Wl,-z,now" \
+ "-fPIC -O2 -g" \
+ { pr23169a.c } \
+ {} \
+ "libpr23169b.so" \
+ ] \
+ [list \
+ "Build pr23169a" \
+ "$NOPIE_LDFLAGS -Wl,--no-as-needed tmpdir/libpr23169a.so" \
+ "$NOPIE_CFLAGS -O2 -g" \
+ { pr23169b.c pr23169c.c } \
+ {{readelf {--dyn-syms} pr23169a.rd} \
+ {readelf {-r -W} pr23169b.rd}} \
+ "pr23169a" \
+ ] \
+ [list \
+ "Build pr23169b" \
+ "-pie -Wl,--no-as-needed tmpdir/libpr23169a.so" \
+ "-fPIE -O2 -g" \
+ { pr23169b.c pr23169c.c } \
+ {{readelf {--dyn-syms} pr23169c.rd} \
+ {readelf {-r -W} pr23169b.rd}} \
+ "pr23169b" \
+ ] \
+ [list \
+ "Build pr23169c" \
+ "$NOPIE_LDFLAGS -Wl,--no-as-needed tmpdir/libpr23169a.so" \
+ "-fPIE -O2 -g" \
+ { pr23169b.c pr23169c.c } \
+ {{readelf {--dyn-syms} pr23169c.rd} \
+ {readelf {-r -W} pr23169b.rd}} \
+ "pr23169c" \
+ ] \
+ [list \
+ "Build pr23169d" \
+ "$NOPIE_LDFLAGS -Wl,--no-as-needed,-z,now tmpdir/libpr23169b.so" \
+ "$NOPIE_CFLAGS -O2 -g" \
+ { pr23169b.c pr23169c.c } \
+ {{readelf {--dyn-syms} pr23169a.rd} \
+ {readelf {-r -W} pr23169b.rd}} \
+ "pr23169d" \
+ ] \
+ [list \
+ "Build pr23169e" \
+ "-pie -Wl,--no-as-needed,-z,now tmpdir/libpr23169b.so" \
+ "-fPIE -O2 -g" \
+ { pr23169b.c pr23169c.c } \
+ {{readelf {--dyn-syms} pr23169c.rd} \
+ {readelf {-r -W} pr23169b.rd}} \
+ "pr23169e" \
+ ] \
+ [list \
+ "Build pr23169f" \
+ "$NOPIE_LDFLAGS -Wl,--no-as-needed,-z,now tmpdir/libpr23169b.so" \
+ "-fPIE -O2 -g" \
+ { pr23169b.c pr23169c.c } \
+ {{readelf {--dyn-syms} pr23169c.rd} \
+ {readelf {-r -W} pr23169b.rd}} \
+ "pr23169f" \
+ ] \
]
run_ld_link_exec_tests [list \
"pr18808.out" \
] \
[list \
- "Run pr18841 with libpr18841b.so" \
- "-Wl,--no-as-needed tmpdir/pr18841a.o tmpdir/libpr18841b.so" \
+ "Run pr18808 (-z now)" \
+ "-Wl,-z,now -Wl,--no-as-needed tmpdir/pr18808a.o tmpdir/libpr18808n.so" \
"" \
{ dummy.c } \
+ "pr18808n" \
+ "pr18808.out" \
+ ] \
+ [list \
+ "Run pr18841 with libpr18841b.so" \
+ "$NOPIE_LDFLAGS -Wl,--no-as-needed tmpdir/pr18841a.o tmpdir/libpr18841b.so" \
+ "$NOPIE_CFLAGS" \
+ { dummy.c } \
"pr18841b" \
"pr18841.out" \
] \
[list \
"Run pr18841 with libpr18841c.so" \
- "-Wl,--as-needed tmpdir/pr18841a.o tmpdir/libpr18841c.so" \
- "" \
+ "$NOPIE_LDFLAGS -Wl,--as-needed tmpdir/pr18841a.o tmpdir/libpr18841c.so" \
+ "$NOPIE_CFLAGS" \
{ dummy.c } \
"pr18841c" \
"pr18841.out" \
] \
+ [list \
+ "Run pr18841 with libpr18841bn.so (-z now)" \
+ "$NOPIE_LDFLAGS -Wl,-z,now -Wl,--no-as-needed tmpdir/pr18841a.o tmpdir/libpr18841bn.so" \
+ "$NOPIE_CFLAGS" \
+ { dummy.c } \
+ "pr18841bn" \
+ "pr18841.out" \
+ ] \
+ [list \
+ "Run pr18841 with libpr18841cn.so (-z now)" \
+ "$NOPIE_LDFLAGS -Wl,-z,now -Wl,--as-needed tmpdir/pr18841a.o tmpdir/libpr18841cn.so" \
+ "$NOPIE_CFLAGS" \
+ { dummy.c } \
+ "pr18841cn" \
+ "pr18841.out" \
+ ] \
]
+
+# The pr23169 testcase is not valid. In general, you can't call ifunc
+# resolvers in another binary unless you know what you're doing. In
+# particular you must ensure that the binary containing the resolver
+# is relocated before the resolver is called (for example, the
+# function addresses returned by the resolver may be loaded from the
+# GOT).
+# That does not happen for the pr23169 testcase where the resolver is
+# in the executable (which is relocated last by ld.so).
+if { [isnative]
+ && !([istarget "powerpc-*-*"]
+ || [istarget "aarch64*-*-*"]
+ || [istarget "sparc*-*-*"]
+ || [istarget "riscv*-*-*"]) } {
+run_ld_link_exec_tests [list \
+ [list \
+ "Run pr23169a" \
+ "$NOPIE_LDFLAGS -Wl,--no-as-needed tmpdir/libpr23169a.so" \
+ "" \
+ { pr23169b.c pr23169c.c } \
+ "pr23169a" \
+ "pass.out" \
+ "$NOPIE_CFLAGS -O2 -g" \
+ ] \
+ [list \
+ "Run pr23169b" \
+ "-pie -Wl,--no-as-needed tmpdir/libpr23169a.so" \
+ "" \
+ { pr23169b.c pr23169c.c } \
+ "pr23169b" \
+ "pass.out" \
+ "-fPIE -O2 -g" \
+ ] \
+ [list \
+ "Run pr23169c" \
+ "$NOPIE_LDFLAGS -Wl,--no-as-needed tmpdir/libpr23169a.so" \
+ "" \
+ { pr23169b.c pr23169c.c } \
+ "pr23169c" \
+ "pass.out" \
+ "-fPIE -O2 -g" \
+ ] \
+ [list \
+ "Run pr23169d" \
+ "$NOPIE_LDFLAGS -Wl,--no-as-needed,-z,now tmpdir/libpr23169b.so" \
+ "" \
+ { pr23169b.c pr23169c.c } \
+ "pr23169d" \
+ "pass.out" \
+ "$NOPIE_CFLAGS -O2 -g" \
+ ] \
+ [list \
+ "Run pr23169e" \
+ "-pie -Wl,--no-as-needed,-z,now tmpdir/libpr23169b.so" \
+ "" \
+ { pr23169b.c pr23169c.c } \
+ "pr23169e" \
+ "pass.out" \
+ "-fPIE -O2 -g" \
+ ] \
+ [list \
+ "Run pr23169f" \
+ "$NOPIE_LDFLAGS -Wl,--no-as-needed,-z,now tmpdir/libpr23169b.so" \
+ "" \
+ { pr23169b.c pr23169c.c } \
+ "pr23169f" \
+ "pass.out" \
+ "-fPIE -O2 -g" \
+ ] \
+]
+if { $STATIC_PIE_LDFLAGS != "" } then {
+ run_ld_link_exec_tests [list \
+ [list \
+ "Run pr23169g" \
+ "$STATIC_PIE_LDFLAGS" \
+ "" \
+ { pr23169a.c pr23169b.c pr23169c.c } \
+ "pr23169g" \
+ "pass.out" \
+ "-fPIE -O2 -g" \
+ ] \
+]
+}
+}
+
+set ASFLAGS "$saved_ASFLAGS"
projects / thirdparty / binutils-gdb.git / blobdiff