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| author | Ian Lance Taylor <iant@golang.org> | 2021-07-30 14:28:58 -0700 |
|---|---|---|
| committer | Ian Lance Taylor <iant@golang.org> | 2021-08-12 20:23:07 -0700 |
| commit | c5b21c3f4c17b0649155035d2f9aa97b2da8a813 (patch) | |
| tree | c6d3a68b503ba5b16182acbb958e3e5dbc95a43b /libgo/go/crypto/ecdsa/ecdsa_s390x.go | |
| parent | 72be20e20299ec57b4bc9ba03d5b7d6bf10e97cc (diff) | |
| download | gcc-c5b21c3f4c17b0649155035d2f9aa97b2da8a813.zip gcc-c5b21c3f4c17b0649155035d2f9aa97b2da8a813.tar.gz gcc-c5b21c3f4c17b0649155035d2f9aa97b2da8a813.tar.bz2 | |
libgo: update to Go1.17rc2
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/341629
Diffstat (limited to 'libgo/go/crypto/ecdsa/ecdsa_s390x.go')
| -rw-r--r-- | libgo/go/crypto/ecdsa/ecdsa_s390x.go | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/libgo/go/crypto/ecdsa/ecdsa_s390x.go b/libgo/go/crypto/ecdsa/ecdsa_s390x.go index de51cab..b43b82b 100644 --- a/libgo/go/crypto/ecdsa/ecdsa_s390x.go +++ b/libgo/go/crypto/ecdsa/ecdsa_s390x.go @@ -2,6 +2,7 @@ // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. +//go:build ignore_for_gccgo // +build ignore_for_gccgo package ecdsa @@ -23,12 +24,18 @@ import ( //go:noescape func kdsa(fc uint64, params *[4096]byte) (errn uint64) +// testingDisableKDSA forces the generic fallback path. It must only be set in tests. +var testingDisableKDSA bool + // canUseKDSA checks if KDSA instruction is available, and if it is, it checks // the name of the curve to see if it matches the curves supported(P-256, P-384, P-521). // Then, based on the curve name, a function code and a block size will be assigned. // If KDSA instruction is not available or if the curve is not supported, canUseKDSA // will set ok to false. func canUseKDSA(c elliptic.Curve) (functionCode uint64, blockSize int, ok bool) { + if testingDisableKDSA { + return 0, 0, false + } if !cpu.S390X.HasECDSA { return 0, 0, false } |