}

extern void crosscall1(void (*fn)(void), void (*setg_gcc)(void*), void *g);
static void
threadentry(void *v)
{
	ThreadStart ts;

	ts = *(ThreadStart*)v;
	free(v);

	// minit queries stack bounds from the OS.

	/*
	 * Set specific keys in thread local storage.
	 */
	asm volatile (
		"movl %0, %%fs:0(%1)\n"	// MOVL tls0, 0(tls_g)(FS)
		"movl %%fs:0(%1), %%eax\n"	// MOVL 0(tls_g)(FS), tmp

	}

	// Stack pointer must point inside stack area (as marked with MAP_STACK),
	// rather than at the top of it.
	param := tforkt{
		tf_tcb:   unsafe.Pointer(&mp.tls[0]),
		tf_tid:   nil, // minit will record tid
		tf_stack: uintptr(stk) - goarch.PtrSize,
	}

	var oset sigset
	sigprocmask(_SIG_SETMASK, &sigset_all, &oset)
	ret := retryOnEAGAIN(func() int32 {

// Called on the new thread, cannot allocate memory.
func minit() {
	if atomic.Load(&exiting) != 0 {
		exits(&emptystatus[0])
	}
	// Mask all SSE floating-point exceptions
	// when running on the 64-bit kernel.
	setfpmasks()
}

// Called from dropm to undo the effect of an minit.
func unminit() {
}

// Called on the new thread, cannot allocate memory.
func minit() {
	minitSignals()

	// Cgo-created threads and the bootstrap m are missing a
	// procid. We need this for asynchronous preemption and it's
	// useful in debuggers.
	getg().m.procid = uint64(gettid())
}

// Called from dropm to undo the effect of an minit.
//
//go:nosplit
func unminit() {
	unminitSignals()

// Called on the new thread, cannot allocate Go memory.
func minit() {
	var thandle uintptr
	if stdcall7(_DuplicateHandle, currentProcess, currentThread, currentProcess, uintptr(unsafe.Pointer(&thandle)), 0, 0, _DUPLICATE_SAME_ACCESS) == 0 {
		print("runtime.minit: duplicatehandle failed; errno=", getlasterror(), "\n")
		throw("runtime.minit: duplicatehandle failed")
	}

	mp := getg().m
	lock(&mp.threadLock)

TEXT runtime·settls(SB),NOSPLIT,$8
	RET

// void libc_miniterrno(void *(*___errno)(void));
//
// Set the TLS errno pointer in M.
//
// Called using runtime·asmcgocall from os_solaris.c:/minit.
// NOT USING GO CALLING CONVENTION.
TEXT runtime·miniterrno(SB),NOSPLIT,$0
	// asmcgocall will put first argument into DI.
	CALL	DI	// SysV ABI so returns in AX
	get_tls(CX)
	MOVQ	g(CX), BX
	MOVQ	g_m(BX), BX

	// and let mstart0 exit the thread.
	gp.sched.g = guintptr(unsafe.Pointer(gp))
	gp.sched.pc = getcallerpc()
	gp.sched.sp = getcallersp()

	asminit()
	minit()

	// Install signal handlers; after minit so that minit can
	// prepare the thread to be able to handle the signals.
	if gp.m == &m0 {
		mstartm0()
	}

	if fn := gp.m.mstartfn; fn != nil {
		fn()
	}

		if !blockableSig(uint32(i)) {
			sigdelset(&nmask, i)
		}
	}
	sigprocmask(_SIG_SETMASK, &nmask, nil)
}

// unminitSignals is called from dropm, via unminit, to undo the
// effect of calling minit on a non-Go thread.
//
//go:nosplit
func unminitSignals() {
	if getg().m.newSigstack {
		st := stackt{ss_flags: _SS_DISABLE}
		sigaltstack(&st, nil)
	} else {

	// thread.
	//
	// For other threads, the runtime explicitly asks the kernel
	// to use the default stack size so that all stacks are
	// consistent.
	//
	// At thread start, in minit, the runtime queries the OS for
	// the actual stack bounds so that the stack size doesn't need
	// to be hard-coded into the runtime.
	oh64.SizeOfStackReserve = 0x00200000
	if !iscgo {

	locks         int32
	dying         int32
	profilehz     int32
	spinning      bool // m is out of work and is actively looking for work
	blocked       bool // m is blocked on a note
	newSigstack   bool // minit on C thread called sigaltstack
	printlock     int8
	incgo         bool          // m is executing a cgo call
	isextra       bool          // m is an extra m