//
//go:build !race

package runtime_test

import (
	"runtime"
	"testing"
)

// Syscall tests split stack between Entersyscall and Exitsyscall under race detector.
func BenchmarkSyscall(b *testing.B) {
	benchmarkSyscall(b, 0, 1)
}

func BenchmarkSyscallWork(b *testing.B) {
	benchmarkSyscall(b, 100, 1)
}

func BenchmarkSyscallExcess(b *testing.B) {

	runtime.ExitSyscall()
	if int64(r0) == -1 {
		err = errnoErr2(e1, e2)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func ioctl(fd int, req int, arg uintptr) (err error) {
	runtime.EnterSyscall()
	r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_IOCTL<<4, uintptr(fd), uintptr(req), uintptr(arg))
	runtime.ExitSyscall()
	if int64(r0) == -1 {
		err = errnoErr2(e1, e2)

}

func CgoPprofCallback() {
	// Issue 50936 was a crash in the SIGPROF handler when the signal
	// arrived during the exitsyscall following a cgocall(back) in dropg or
	// execute, when updating mp.curg.
	//
	// These are reachable only when exitsyscall finds no P available. Thus
	// we make C calls from significantly more Gs than there are available

	libcCall(unsafe.Pointer(abi.FuncPCABI0(syscall)), unsafe.Pointer(&fn))
	exitsyscall()
	return
}
func syscall()

//go:linkname syscall_syscallX syscall.syscallX
//go:nosplit
//go:cgo_unsafe_args
func syscall_syscallX(fn, a1, a2, a3 uintptr) (r1, r2, err uintptr) {
	entersyscall()
	libcCall(unsafe.Pointer(abi.FuncPCABI0(syscallX)), unsafe.Pointer(&fn))
	exitsyscall()
	return
}
func syscallX()

	syscall.Entersyscall()
	r := realSyscallNoError(trap, a1, a2, a3, 0, 0, 0, 0, 0, 0)
	syscall.Exitsyscall()
	return r, 0
}

func Syscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err syscall.Errno) {
	syscall.Entersyscall()
	r, errno := realSyscall(trap, a1, a2, a3, 0, 0, 0, 0, 0, 0)
	syscall.Exitsyscall()
	return r, 0, syscall.Errno(errno)
}

	call := libcall{
		fn:   fn,
		n:    nargs,
		args: uintptr(unsafe.Pointer(&a1)),
	}
	entersyscallblock()
	asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&call))
	exitsyscall()
	return call.r1, call.r2, call.err
}

//go:nosplit
//go:linkname syscall_rawsysvicall6
//go:cgo_unsafe_args
func syscall_rawsysvicall6(fn, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr) {

	errno := asmcgocall(fn, arg)

	// Update accounting before exitsyscall because exitsyscall may
	// reschedule us on to a different M.
	mp.incgo = false
	mp.ncgo--

	osPreemptExtExit(mp)

	// Save current syscall parameters, so m.winsyscall can be
	// used again if callback decide to make syscall.
	winsyscall := mp.winsyscall

	exitsyscall()

	getg().m.winsyscall = winsyscall

	ready(mp)

	// Wait for the signal. We use a pipe rather than a note
	// because write is always async-signal-safe.
	entersyscallblock()
	var b byte
	read(waitForSigusr1.rdpipe, noescape(unsafe.Pointer(&b)), 1)
	exitsyscall()

	gotM := waitForSigusr1.mID
	testSigusr1 = nil

	unlockOSThread()

	if b != 0 {
		// timeout signal from caller
		return -1, -1
	}
	return mp.id, gotM
}

	args := struct{ fn, a1, a2, a3, r1, r2, err uintptr }{fn, a1, a2, a3, r1, r2, err}
	entersyscall()
	libcCall(unsafe.Pointer(abi.FuncPCABI0(syscall)), unsafe.Pointer(&args))
	exitsyscall()
	return args.r1, args.r2, args.err
}
func syscall()

//go:linkname syscall_syscallX syscall.syscallX
//go:nosplit
func syscall_syscallX(fn, a1, a2, a3 uintptr) (r1, r2, err uintptr) {

// same as runtime·notetsleep, but called on user g (not g0)
// calls only nosplit functions between entersyscallblock/exitsyscall.
func notetsleepg(n *note, ns int64) bool {
	gp := getg()
	if gp == gp.m.g0 {
		throw("notetsleepg on g0")
	}

	entersyscallblock()
	ok := notetsleep_internal(n, ns)
	exitsyscall()
	return ok
}

func beforeIdle(int64, int64) (*g, bool) {
	return nil, false
}