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Add basic support for IBM Z (s390x) CPU feature (known as 'facilities') detection. Note that some of these features are mandatory when using the Go compiler (for example, ldisp and eimm) but aren't mandatory when using gccgo. Cryptographic function detection is not yet implemented for gccgo. Change-Id: Ic6494d0df0bc1c1ad1713c9ff11ae23fba03d215 Reviewed-on: https://go-review.googlesource.com/c/163003 Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com> Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
22 lines
677 B
Go
22 lines
677 B
Go
// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build !gccgo
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package cpu
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// haveAsmFunctions reports whether the other functions in this file can
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// be safely called.
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func haveAsmFunctions() bool { return true }
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// The following feature detection functions are defined in cpu_s390x.s.
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// They are likely to be expensive to call so the results should be cached.
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func stfle() facilityList
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func kmQuery() queryResult
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func kmcQuery() queryResult
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func kmctrQuery() queryResult
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func kmaQuery() queryResult
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func kimdQuery() queryResult
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func klmdQuery() queryResult
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