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go/src/crypto/sha256/sha256block_s390x.s

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crypto/sha256: add s390x assembly implementation Renames block to blockGeneric so that it can be called when the assembly feature check fails. This means making block a var on platforms without an assembly implementation (similar to the sha1 package). Also adds a test to check that the fallback path works correctly when the feature check fails. name old speed new speed delta Hash8Bytes 6.42MB/s ± 1% 27.14MB/s ± 0% +323.01% (p=0.000 n=10+10) Hash1K 53.9MB/s ± 0% 511.1MB/s ± 0% +847.57% (p=0.000 n=10+9) Hash8K 57.1MB/s ± 1% 609.7MB/s ± 0% +967.04% (p=0.000 n=10+10) Change-Id: If962b2a5c9160b3a0b76ccee53b2fd809468ed3d Reviewed-on: https://go-review.googlesource.com/22460 Run-TryBot: Michael Munday <munday@ca.ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Bill O'Farrell <billotosyr@gmail.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-04-25 15:58:34 -06:00
// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
#include "textflag.h"
// func block(dig *digest, p []byte)
crypto, internal/cpu: fix s390x AES feature detection and update SHA implementations Hardware AES support in Go on s390x currently requires ECB, CBC and CTR modes be available. It also requires that either the GHASH or GCM facilities are available. The existing checks missed some of these constraints. While we're here simplify the cpu package on s390x, moving masking code out of assembly and into Go code. Also, update SHA-{1,256,512} implementations to use the cpu package since that is now trivial. Finally I also added a test for internal/cpu on s390x which loads /proc/cpuinfo and checks it against the flags set by internal/cpu. Updates #25822 for changes to vet whitelist. Change-Id: Iac4183f571643209e027f730989c60a811c928eb Reviewed-on: https://go-review.googlesource.com/114397 Run-TryBot: Michael Munday <mike.munday@ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-05-24 06:20:21 -06:00
TEXT ·block(SB), NOSPLIT|NOFRAME, $0-32
MOVBZ ·useAsm(SB), R4
LMG dig+0(FP), R1, R3 // R2 = &p[0], R3 = len(p)
MOVBZ $2, R0 // SHA-256 function code
CMPBEQ R4, $0, generic
crypto/sha256: add s390x assembly implementation Renames block to blockGeneric so that it can be called when the assembly feature check fails. This means making block a var on platforms without an assembly implementation (similar to the sha1 package). Also adds a test to check that the fallback path works correctly when the feature check fails. name old speed new speed delta Hash8Bytes 6.42MB/s ± 1% 27.14MB/s ± 0% +323.01% (p=0.000 n=10+10) Hash1K 53.9MB/s ± 0% 511.1MB/s ± 0% +847.57% (p=0.000 n=10+9) Hash8K 57.1MB/s ± 1% 609.7MB/s ± 0% +967.04% (p=0.000 n=10+10) Change-Id: If962b2a5c9160b3a0b76ccee53b2fd809468ed3d Reviewed-on: https://go-review.googlesource.com/22460 Run-TryBot: Michael Munday <munday@ca.ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Bill O'Farrell <billotosyr@gmail.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-04-25 15:58:34 -06:00
loop:
crypto, internal/cpu: fix s390x AES feature detection and update SHA implementations Hardware AES support in Go on s390x currently requires ECB, CBC and CTR modes be available. It also requires that either the GHASH or GCM facilities are available. The existing checks missed some of these constraints. While we're here simplify the cpu package on s390x, moving masking code out of assembly and into Go code. Also, update SHA-{1,256,512} implementations to use the cpu package since that is now trivial. Finally I also added a test for internal/cpu on s390x which loads /proc/cpuinfo and checks it against the flags set by internal/cpu. Updates #25822 for changes to vet whitelist. Change-Id: Iac4183f571643209e027f730989c60a811c928eb Reviewed-on: https://go-review.googlesource.com/114397 Run-TryBot: Michael Munday <mike.munday@ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-05-24 06:20:21 -06:00
WORD $0xB93E0002 // KIMD R2
BVS loop // continue if interrupted
crypto/sha256: add s390x assembly implementation Renames block to blockGeneric so that it can be called when the assembly feature check fails. This means making block a var on platforms without an assembly implementation (similar to the sha1 package). Also adds a test to check that the fallback path works correctly when the feature check fails. name old speed new speed delta Hash8Bytes 6.42MB/s ± 1% 27.14MB/s ± 0% +323.01% (p=0.000 n=10+10) Hash1K 53.9MB/s ± 0% 511.1MB/s ± 0% +847.57% (p=0.000 n=10+9) Hash8K 57.1MB/s ± 1% 609.7MB/s ± 0% +967.04% (p=0.000 n=10+10) Change-Id: If962b2a5c9160b3a0b76ccee53b2fd809468ed3d Reviewed-on: https://go-review.googlesource.com/22460 Run-TryBot: Michael Munday <munday@ca.ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Bill O'Farrell <billotosyr@gmail.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-04-25 15:58:34 -06:00
RET
crypto, internal/cpu: fix s390x AES feature detection and update SHA implementations Hardware AES support in Go on s390x currently requires ECB, CBC and CTR modes be available. It also requires that either the GHASH or GCM facilities are available. The existing checks missed some of these constraints. While we're here simplify the cpu package on s390x, moving masking code out of assembly and into Go code. Also, update SHA-{1,256,512} implementations to use the cpu package since that is now trivial. Finally I also added a test for internal/cpu on s390x which loads /proc/cpuinfo and checks it against the flags set by internal/cpu. Updates #25822 for changes to vet whitelist. Change-Id: Iac4183f571643209e027f730989c60a811c928eb Reviewed-on: https://go-review.googlesource.com/114397 Run-TryBot: Michael Munday <mike.munday@ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-05-24 06:20:21 -06:00
crypto/sha256: add s390x assembly implementation Renames block to blockGeneric so that it can be called when the assembly feature check fails. This means making block a var on platforms without an assembly implementation (similar to the sha1 package). Also adds a test to check that the fallback path works correctly when the feature check fails. name old speed new speed delta Hash8Bytes 6.42MB/s ± 1% 27.14MB/s ± 0% +323.01% (p=0.000 n=10+10) Hash1K 53.9MB/s ± 0% 511.1MB/s ± 0% +847.57% (p=0.000 n=10+9) Hash8K 57.1MB/s ± 1% 609.7MB/s ± 0% +967.04% (p=0.000 n=10+10) Change-Id: If962b2a5c9160b3a0b76ccee53b2fd809468ed3d Reviewed-on: https://go-review.googlesource.com/22460 Run-TryBot: Michael Munday <munday@ca.ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Bill O'Farrell <billotosyr@gmail.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-04-25 15:58:34 -06:00
generic:
crypto, internal/cpu: fix s390x AES feature detection and update SHA implementations Hardware AES support in Go on s390x currently requires ECB, CBC and CTR modes be available. It also requires that either the GHASH or GCM facilities are available. The existing checks missed some of these constraints. While we're here simplify the cpu package on s390x, moving masking code out of assembly and into Go code. Also, update SHA-{1,256,512} implementations to use the cpu package since that is now trivial. Finally I also added a test for internal/cpu on s390x which loads /proc/cpuinfo and checks it against the flags set by internal/cpu. Updates #25822 for changes to vet whitelist. Change-Id: Iac4183f571643209e027f730989c60a811c928eb Reviewed-on: https://go-review.googlesource.com/114397 Run-TryBot: Michael Munday <mike.munday@ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-05-24 06:20:21 -06:00
BR ·blockGeneric(SB)
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