mirror of https://go.googlesource.com/go
32 lines
825 B
Go
32 lines
825 B
Go
// Copyright 2016 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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package runtime
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import "internal/cpu"
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const (
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_HWCAP_VX = 1 << 11 // vector facility
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)
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func archauxv(tag, val uintptr) {
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switch tag {
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case _AT_HWCAP:
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cpu.HWCap = uint(val)
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}
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}
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func osArchInit() {}
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func checkS390xCPU() {
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// Check if the present z-system has the hardware capability to carryout
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// floating point operations. Check if hwcap reflects CPU capability for the
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// necessary floating point hardware (HasVX) availability.
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// Starting with Go1.19, z13 is the minimum machine level for running Go on LoZ
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if cpu.HWCap&_HWCAP_VX == 0 {
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print("runtime: This CPU has no floating point hardware, so this program cannot be run. \n")
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exit(1)
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}
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}
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