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-rw-r--r--src/crypto/sha/asm/sha1-586.pl25
1 files changed, 14 insertions, 11 deletions
diff --git a/src/crypto/sha/asm/sha1-586.pl b/src/crypto/sha/asm/sha1-586.pl
index 09fd3fc..e0b5d83 100644
--- a/src/crypto/sha/asm/sha1-586.pl
+++ b/src/crypto/sha/asm/sha1-586.pl
@@ -118,20 +118,23 @@ require "x86asm.pl";
$xmm=$ymm=0;
for (@ARGV) { $xmm=1 if (/-DOPENSSL_IA32_SSE2/); }
-# In upstream, this is controlled by shelling out to the compiler to check
-# versions, but BoringSSL is intended to be used with pre-generated perlasm
-# output, so this isn't useful anyway.
-#
-# TODO(davidben): Enable this after testing. $ymm goes up to 1.
-$ymm = 0;
+$ymm=1 if ($xmm &&
+ `$ENV{CC} -Wa,-v -c -o /dev/null -x assembler /dev/null 2>&1`
+ =~ /GNU assembler version ([2-9]\.[0-9]+)/ &&
+ $1>=2.19); # first version supporting AVX
-$ymm = 0 unless ($xmm);
+$ymm=1 if ($xmm && !$ymm && $ARGV[0] eq "win32n" &&
+ `nasm -v 2>&1` =~ /NASM version ([2-9]\.[0-9]+)/ &&
+ $1>=2.03); # first version supporting AVX
-$shaext=$xmm; ### set to zero if compiling for 1.0.1
+$ymm=1 if ($xmm && !$ymm && $ARGV[0] eq "win32" &&
+ `ml 2>&1` =~ /Version ([0-9]+)\./ &&
+ $1>=10); # first version supporting AVX
-# TODO(davidben): Consider enabling the Intel SHA Extensions code once it's
-# been tested.
-$shaext = 0;
+$ymm=1 if ($xmm && !$ymm && `$ENV{CC} -v 2>&1` =~ /(^clang version|based on LLVM) ([3-9]\.[0-9]+)/ &&
+ $2>=3.0); # first version supporting AVX
+
+$shaext=$xmm; ### set to zero if compiling for 1.0.1
&external_label("OPENSSL_ia32cap_P") if ($xmm);