2 # Make sure no code in ld.so uses xmm/ymm/zmm registers on i386.
3 # Copyright (C) 2009-2016 Free Software Foundation, Inc.
4 # This file is part of the GNU C Library.
6 # The GNU C Library is free software; you can redistribute it and/or
7 # modify it under the terms of the GNU Lesser General Public
8 # License as published by the Free Software Foundation; either
9 # version 2.1 of the License, or (at your option) any later version.
11 # The GNU C Library is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 # Lesser General Public License for more details.
16 # You should have received a copy of the GNU Lesser General Public
17 # License along with the GNU C Library; if not, see
18 # <http://www.gnu.org/licenses/>.
27 tmp
=$
(mktemp
${objpfx}tst-ld-sse-use.XXXXXX
)
28 trap 'rm -f "$tmp"' 1 2 3 15
30 # List of object files we have to test
31 rtldobjs
=$
($READELF -W -wi ${objpfx}dl-allobjs.os |
32 awk '/^ </ { if ($5 == "(DW_TAG_compile_unit)") c=1; else c=0 } $2 == "DW_AT_name" { if (c == 1) print $NF }' |
33 sed 's,\(.*/\|\)\([_[:alnum:]-]*[.]\).$,\2os,')
34 rtldobjs
="$rtldobjs $(ar t ${objpfx}rtld-libc.a)"
36 # OBJECT symbols can be ignored.
37 $READELF -sW ${objpfx}dl-allobjs.os
${objpfx}rtld-libc.a |
38 egrep " OBJECT *GLOBAL " |
39 awk '{if ($7 != "ABS") print $8 }' |
42 objects
=($
(cat "$tmp"))
45 tocheck
="dl-runtime.os"
47 while test -n "$objs"; do
52 undef
=$
($NM -u "$objpfx"..
/*/"$f" |
awk '{print $2}')
53 if test -n "$undef"; then
55 for obj
in ${objects[*]} "_GLOBAL_OFFSET_TABLE_"; do
56 if test "$obj" = "$s"; then
60 for o
in $rtldobjs; do
61 ro
=$
(echo "$objpfx"..
/*/"$o")
62 if $NM -g --defined-only "$ro" |
egrep -qs " $s\$"; then
63 if ! (echo "$tocheck $objs" | fgrep
-qs "$o"); then
64 echo "$o needed for $s"
73 tocheck
="$tocheck$objs"
78 echo "object files needed: $tocheck"
82 $OBJDUMP -d "$objpfx"..
/*/"$f" |
83 awk 'BEGIN { last="" } /^[[:xdigit:]]* <[_[:alnum:]]*>:$/ { fct=substr($2, 2, length($2)-3) } /,%[xyz]mm[[:digit:]]*$/ { if (last != fct) { print fct; last=fct} }' |
85 if test "$fct" = "_dl_runtime_profile" -o "$fct" = "_dl_x86_64_restore_sse"; then
88 echo "function $fct in $f modifies xmm/ymm/zmm" >> "$tmp"
93 if test -s "$tmp"; then