func asmsysvicall6() // declared for vet; do NOT call

//go:nosplit
func sysvicall0(fn *libcFunc) uintptr {
	// Leave caller's PC/SP around for traceback.
	gp := getg()
	var mp *m
	if gp != nil {
		mp = gp.m
	}
	if mp != nil && mp.libcallsp == 0 {
		mp.libcallg.set(gp)
		mp.libcallpc = getcallerpc()
		// sp must be the last, because once async cpu profiler finds

		// observe this.
		throw("self deadlock")
	}
	gp := getg()
	if gp.m.locks < 0 {
		throw("lock count")
	}
	gp.m.locks++
	l.key = mutex_locked
}

func unlock(l *mutex) {
	unlockWithRank(l)
}

func unlock2(l *mutex) {
	if l.key == mutex_unlocked {
		throw("unlock of unlocked lock")
	}
	gp := getg()
	gp.m.locks--
	if gp.m.locks < 0 {
		throw("lock count")
	}

		// observe this.
		throw("self deadlock")
	}
	gp := getg()
	if gp.m.locks < 0 {
		throw("lock count")
	}
	gp.m.locks++
	l.key = mutex_locked
}

func unlock(l *mutex) {
	unlockWithRank(l)
}

func unlock2(l *mutex) {
	if l.key == mutex_unlocked {
		throw("unlock of unlocked lock")
	}
	gp := getg()
	gp.m.locks--
	if gp.m.locks < 0 {
		throw("lock count")
	}

			throw("lockRank release without matching lockRank acquire")
		}
	})

	releasem(getg().m)
}

// nosplit because it may be called from nosplit contexts.
//
//go:nosplit
func lockWithRankMayAcquire(l *mutex, rank lockRank) {
	gp := getg()
	if gp.m.locksHeldLen == 0 {
		// No possibility of lock ordering problem if no other locks held
		return
	}

	if ns < 0 {
		result = stdcall2(_WaitForSingleObject, getg().m.waitsema, uintptr(_INFINITE))
	} else {
		start := nanotime()
		elapsed := int64(0)
		for {
			ms := int64(timediv(ns-elapsed, 1000000, nil))
			if ms == 0 {
				ms = 1
			}
			result = stdcall4(_WaitForMultipleObjects, 2,
				uintptr(unsafe.Pointer(&[2]uintptr{getg().m.waitsema, getg().m.resumesema})),
				0, uintptr(ms))

	// a signal handler. Add the go:nowritebarrierrec annotation and restructure
	// this to avoid write barriers.

	switch h.gp.atomicstatus.Load() {
	case _Grunning:
		if getg().m != h.mp {
			println("trap on wrong M", getg().m, h.mp)
			return false
		}
		// Save the signal context
		h.saveSigContext(ctxt)
		// Set PC to debugCallV2.
		ctxt.setsigpc(uint64(abi.FuncPCABIInternal(debugCallV2)))

// This will return a pointer to errno.
func miniterrno() {
	mp := getg().m
	r, _ := syscall0(&libc__Errno)
	mp.perrno = r

}

func minit() {
	miniterrno()
	minitSignals()
	getg().m.procid = uint64(pthread_self())
}

func unminit() {
	unminitSignals()
	getg().m.procid = 0
}

// Called from exitm, but not from drop, to undo the effect of thread-owned

	callbackLastVCH
)

// sigFetchGSafe is like getg() but without panicking
// when TLS is not set.
// Only implemented on windows/386, which is the only
// arch that loads TLS when calling getg(). Others
// use a dedicated register.
func sigFetchGSafe() *g

func sigFetchG() *g {
	if GOARCH == "386" {
		return sigFetchGSafe()
	}
	return getg()
}

Zhonghu Xu <******@****.***> 1709018378 +0800

	"unsafe"
)

func osinit() {
	// https://webassembly.github.io/spec/core/exec/runtime.html#memory-instances
	physPageSize = 64 * 1024
	initBloc()
	ncpu = 1
	getg().m.procid = 2
}

const _SIGSEGV = 0xb

func sigpanic() {
	gp := getg()
	if !canpanic() {
		throw("unexpected signal during runtime execution")
	}

	// js only invokes the exception handler for memory faults.
	gp.sig = _SIGSEGV
	panicmem()