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