// license that can be found in the LICENSE file.

package runtime

func checkgoarm() {
	// TODO(minux): FP checks like in os_linux_arm.go.

	// osinit not called yet, so ncpu not set: must use getncpu directly.
	if getncpu() > 1 && goarm < 7 {
		print("runtime: this system has multiple CPUs and must use\n")
		print("atomic synchronization instructions. Recompile using GOARM=7.\n")
		exit(1)
	}
}

//go:nosplit

	mc.__gregs[_REG_R2] = uint32(fn)
}

func checkgoarm() {
	// TODO(minux): FP checks like in os_linux_arm.go.

	// osinit not called yet, so ncpu not set: must use getncpu directly.
	if getncpu() > 1 && goarm < 7 {
		print("runtime: this system has multiple CPUs and must use\n")
		print("atomic synchronization instructions. Recompile using GOARM=7.\n")
		exit(1)
	}
}

//go:nosplit

		print("a binary compiled for VFPv3 hard floating point. Recompile adding ,softfloat\n")
		print("to GOARM or changing GOARM to 6.\n")
		exit(1)
	}

	// osinit not called yet, so ncpu not set: must use getncpu directly.
	if getncpu() > 1 && goarm < 7 {
		print("runtime: this system has multiple CPUs and must use\n")
		print("atomic synchronization instructions. Recompile using GOARM=7.\n")
		exit(1)
	}
}

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Solaris code that doesn't also apply to illumos.

//go:build !illumos

package runtime

func getncpu() int32 {
	n := int32(sysconf(__SC_NPROCESSORS_ONLN))
	if n < 1 {
		return 1
	}

	return n

		return 0, false
	}
	return out, true
}

//go:linkname internal_cpu_sysctlUint64 internal/cpu.sysctlUint64
func internal_cpu_sysctlUint64(mib []uint32) (uint64, bool) {
	return sysctlUint64(mib)
}

func getncpu() int32 {
	// Try hw.ncpuonline first because hw.ncpu would report a number twice as
	// high as the actual CPUs running on OpenBSD 6.4 with hyperthreading
	// disabled (hw.smt=0). See https://golang.org/issue/30127

// From DragonFly's <sys/sysctl.h>
const (
	_CTL_HW      = 6
	_HW_NCPU     = 3
	_HW_PAGESIZE = 7
)

var sigset_all = sigset{[4]uint32{^uint32(0), ^uint32(0), ^uint32(0), ^uint32(0)}}

func getncpu() int32 {
	mib := [2]uint32{_CTL_HW, _HW_NCPU}
	out := uint32(0)
	nout := unsafe.Sizeof(out)
	ret := sysctl(&mib[0], 2, (*byte)(unsafe.Pointer(&out)), &nout, nil, 0)
	if ret >= 0 {
		return int32(out)
	}
	return 1

	var out int32
	nout := unsafe.Sizeof(out)
	ret := sysctl(&mib[0], uint32(len(mib)), (*byte)(unsafe.Pointer(&out)), &nout, nil, 0)
	if ret < 0 {
		return 0, false
	}
	return out, true
}

func getncpu() int32 {
	if n, ok := sysctlInt([]uint32{_CTL_HW, _HW_NCPUONLINE}); ok {
		return int32(n)
	}
	if n, ok := sysctlInt([]uint32{_CTL_HW, _HW_NCPU}); ok {
		return int32(n)
	}
	return 1
}

				capval = v
			}
		}

		// Swap the blocks around so that we can fetch the next value
		t := rblk
		rblk = rblkprev
		rblkprev = t
		flag = _RCTL_NEXT
	}

	return capval
}

func getncpu() int32 {
	n := int32(sysconf(__SC_NPROCESSORS_ONLN))
	if n < 1 {
		return 1
	}

	if cents := int32(getcpucap()); cents > 0 {
		// Convert from a percentage of CPUs to a number of CPUs,

			return
		}
	}
}

// BSD interface for threading.
func osinit() {
	// pthread_create delayed until end of goenvs so that we
	// can look at the environment first.

	ncpu = getncpu()
	physPageSize = getPageSize()

	osinit_hack()
}

func sysctlbynameInt32(name []byte) (int32, int32) {
	out := int32(0)
	nout := unsafe.Sizeof(out)

}

const (
	_CPU_CURRENT_PID = -1 // Current process ID.
)

//go:noescape
func cpuset_getaffinity(level int, which int, id int64, size int, mask *byte) int32

//go:systemstack
func getncpu() int32 {
	// Use a large buffer for the CPU mask. We're on the system
	// stack, so this is fine, and we can't allocate memory for a
	// dynamically-sized buffer at this point.
	const maxCPUs = 64 * 1024