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crypto/perlasm/x86_64-xlate.pl: detect GNU as to deal with quirks

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It turns out that GNU as and Solaris as don't have compatible ideas on
the .section syntax, so we need to check if we're using GNU as or
another assembler and adapt this .section syntax accordingly.

Fixes #11132

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/11191)
This commit is contained in:
Richard Levitte 2020-02-27 06:03:52 +01:00
parent 15e5b96933
commit ccceeb4800
1 changed files with 13 additions and 1 deletions
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14
crypto/perlasm/x86_64-xlate.pl
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@ -83,6 +83,10 @@ my $PTR=" PTR";
my $nasmref=2.03;
my $nasm=0;
# GNU as indicator, as opposed to $gas, which indicates acceptable
# syntax
my $gnuas=0;
if ($flavour eq "mingw64") { $gas=1; $elf=0; $win64=1;
$prefix=`echo __USER_LABEL_PREFIX__ | $ENV{CC} -E -P -`;
$prefix =~ s|\R$||; # Better chomp
@ -100,6 +104,12 @@ elsif (!$gas)
$elf=0;
$decor="\$L\$";
}
# Find out if we're using GNU as
elsif (`$ENV{CC} -Wa,-v -c -o /dev/null -x assembler /dev/null 2>&1`
=~ /GNU assembler version ([2-9]\.[0-9]+)/)
{
$gnuas=1;
}
my $cet_property;
if ($flavour =~ /elf/) {
@ -108,8 +118,10 @@ if ($flavour =~ /elf/) {
# with Intel CET support in order for linker to mark output with
# Intel CET support.
my $p2align=3; $p2align=2 if ($flavour eq "elf32");
my $section='.note.gnu.property, #alloc';
$section='".note.gnu.property", "a"' if $gnuas;
$cet_property = <<_____;
.section ".note.gnu.property", "a"
.section $section
.p2align $p2align
.long 1f - 0f
.long 4f - 1f