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vendor: update buildkit to f238f1e
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
This commit is contained in:
17
vendor/golang.org/x/crypto/poly1305/sum_s390x.go
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vendored
17
vendor/golang.org/x/crypto/poly1305/sum_s390x.go
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@ -6,16 +6,9 @@
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package poly1305
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// hasVectorFacility reports whether the machine supports
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// the vector facility (vx).
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func hasVectorFacility() bool
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// hasVMSLFacility reports whether the machine supports
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// Vector Multiply Sum Logical (VMSL).
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func hasVMSLFacility() bool
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var hasVX = hasVectorFacility()
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var hasVMSL = hasVMSLFacility()
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import (
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"golang.org/x/sys/cpu"
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)
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// poly1305vx is an assembly implementation of Poly1305 that uses vector
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// instructions. It must only be called if the vector facility (vx) is
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@ -33,12 +26,12 @@ func poly1305vmsl(out *[16]byte, m *byte, mlen uint64, key *[32]byte)
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// 16-byte result into out. Authenticating two different messages with the same
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// key allows an attacker to forge messages at will.
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func Sum(out *[16]byte, m []byte, key *[32]byte) {
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if hasVX {
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if cpu.S390X.HasVX {
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var mPtr *byte
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if len(m) > 0 {
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mPtr = &m[0]
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}
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if hasVMSL && len(m) > 256 {
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if cpu.S390X.HasVXE && len(m) > 256 {
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poly1305vmsl(out, mPtr, uint64(len(m)), key)
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} else {
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poly1305vx(out, mPtr, uint64(len(m)), key)
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