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s390x assembler pack: tune-up and support for new z196 hardware.

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This commit is contained in:
Andy Polyakov
2011-03-04 13:09:16 +00:00
parent 8aa6cff40f
commit 0ab8fd58e1
3 changed files with 784 additions and 36 deletions
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13
crypto/modes/asm/ghash-s390x.pl
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@@ -28,6 +28,15 @@
# remains z/Architecture specific. On z990 it was measured to perform
# 2.8x better than 32-bit code generated by gcc 4.3.
# March 2011.
#
# Support for hardware KIMD-GHASH is verified to produce correct
# result and therefore is engaged. On z196 it was measured to process
# 8KB buffer ~7 faster than software implementation. It's not as
# impressive for smaller buffer sizes and for smallest 16-bytes buffer
# it's actually almost 2 times slower. Which is the reason why
# KIMD-GHASH is not used in gcm_gmult_4bit.
$flavour = shift;
if ($flavour =~ /3[12]/) {
@@ -41,7 +50,7 @@ if ($flavour =~ /3[12]/) {
while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {}
open STDOUT,">$output";
$softonly=1; # disable hardware support for now
$softonly=0;
$Zhi="%r0";
$Zlo="%r1";
@@ -70,7 +79,7 @@ $code.=<<___;
.align 32
gcm_gmult_4bit:
___
$code.=<<___ if(!$softonly);
$code.=<<___ if(!$softonly && 0); # hardware is slow for single block...
larl %r1,OPENSSL_s390xcap_P
lg %r0,0(%r1)
tmhl %r0,0x4000 # check for message-security-assist