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| author | Patrick Steuer <patrick.steuer@de.ibm.com> | 2017-01-30 12:50:54 +0100 |
|---|---|---|
| committer | Andy Polyakov <appro@openssl.org> | 2017-10-17 21:55:33 +0200 |
| commit | af1d638730bdfad85a7fa8c3f157b2828eda7c1d (patch) | |
| tree | fcc8c2ff4da8bea2d5d46990ea3301bf35943c5b /crypto/modes | |
| parent | crypto/aes/asm/aes-s390x.pl: fix $softonly=1 code path. (diff) | |
| download | openssl-af1d638730bdfad85a7fa8c3f157b2828eda7c1d.tar.xz openssl-af1d638730bdfad85a7fa8c3f157b2828eda7c1d.zip | |
s390x assembly pack: remove capability double-checking.
An instruction's QUERY function is executed at initialization, iff the required
MSA level is installed. Therefore, it is sufficient to check the bits returned
by the QUERY functions. The MSA level does not have to be checked at every
function call.
crypto/aes/asm/aes-s390x.pl: The AES key schedule must be computed if the
required KM or KMC function codes are not available. Formally, the availability
of a KMC function code does not imply the availability of the corresponding KM
function code.
Signed-off-by: Patrick Steuer <patrick.steuer@de.ibm.com>
Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4501)
Diffstat (limited to 'crypto/modes')
| -rw-r--r-- | crypto/modes/asm/ghash-s390x.pl | 13 |
1 files changed, 2 insertions, 11 deletions
diff --git a/crypto/modes/asm/ghash-s390x.pl b/crypto/modes/asm/ghash-s390x.pl index f8b038c708..469aefa7b3 100644 --- a/crypto/modes/asm/ghash-s390x.pl +++ b/crypto/modes/asm/ghash-s390x.pl @@ -88,9 +88,6 @@ gcm_gmult_4bit: ___ $code.=<<___ if(!$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 - jz .Lsoft_gmult lghi %r0,0 lg %r1,24(%r1) # load second word of kimd capabilities vector tmhh %r1,0x4000 # check for function 65 @@ -126,14 +123,8 @@ gcm_ghash_4bit: ___ $code.=<<___ if(!$softonly); larl %r1,OPENSSL_s390xcap_P - lg %r0,0(%r1) - tmhl %r0,0x4000 # check for message-security-assist - jz .Lsoft_ghash - lghi %r0,0 - la %r1,16($sp) - .long 0xb93e0004 # kimd %r0,%r4 - lg %r1,24($sp) - tmhh %r1,0x4000 # check for function 65 + lg %r0,24(%r1) # load second word of kimd capabilities vector + tmhh %r0,0x4000 # check for function 65 jz .Lsoft_ghash lghi %r0,65 # function 65 la %r1,0($Xi) # H lies right after Xi in gcm128_context |