// Called on the new thread, can not allocate memory.
func minit() {
	getg().m.procid = uint64(getthrid())
	minitSignals()
}

// Called from dropm to undo the effect of an minit.
//
//go:nosplit
func unminit() {
	unminitSignals()
	getg().m.procid = 0
}

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

	testgen.Main(gen)
}

func gen(t *testgen.Trace) {
	g1 := t.Generation(1)

	// A goroutine gets created on a running P, then starts running.
	b0 := g1.Batch(trace.ThreadID(0), 0)
	b0.Event("ProcStatus", trace.ProcID(0), go122.ProcRunning)
	b0.Event("GoCreate", trace.GoID(5), testgen.NoStack, testgen.NoStack)
	b0.Event("GoStart", trace.GoID(5), testgen.Seq(1))
	b0.Event("GoStop", "whatever", testgen.NoStack)

		if mp.procid != 0 && mp.procid != pid {
			postnote(mp.procid, buf[:])
		}
	}
	getg().m.locks--
}

var procdir = []byte("/proc/")
var notefile = []byte("/note\x00")

func postnote(pid uint64, msg []byte) int {
	var buf [128]byte
	var tmp [32]byte
	n := copy(buf[:], procdir)
	n += copy(buf[n:], itoa(tmp[:], pid))
	copy(buf[n:], notefile)

	SUBQ	$(64*1024), AX		// stack size
	MOVQ	AX, (g_stack+stack_lo)(DX)
	MOVQ	AX, g_stackguard0(DX)
	MOVQ	AX, g_stackguard1(DX)

	// Initialize procid from TOS struct.
	MOVQ	_tos(SB), AX
	MOVL	64(AX), AX
	MOVQ	AX, m_procid(CX)	// save pid as m->procid

	// Finally, initialize g.
	get_tls(BX)
	MOVQ	DX, g(BX)

	CALL	runtime·stackcheck(SB)	// smashes AX, CX
	CALL	runtime·mstart(SB)

// Called on the new thread, cannot allocate memory.
func minit() {
	getg().m.procid = uint64(lwp_gettid())
	minitSignals()
}

// Called from dropm to undo the effect of an minit.
//
//go:nosplit
func unminit() {
	unminitSignals()
	getg().m.procid = 0
}

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

package runtime

import "unsafe"

// AtomicFields is the set of fields on which we perform 64-bit atomic
// operations (all the *64 operations in internal/runtime/atomic).
var AtomicFields = []uintptr{
	unsafe.Offsetof(m{}.procid),
	unsafe.Offsetof(p{}.gcFractionalMarkTime),
	unsafe.Offsetof(profBuf{}.overflow),
	unsafe.Offsetof(profBuf{}.overflowTime),
	unsafe.Offsetof(heapStatsDelta{}.tinyAllocCount),

	if stack == nil {
		writeErrStr(failallocatestack)
		exit(1)
	}
	// This code "knows" it's being called once from the library
	// initialization code, and so it's using the static m0 for the
	// tls and procid (thread) pointers. thr_new() requires the tls
	// pointers, though the tid pointers can be nil.
	// However, newosproc0 is currently unreachable because builds
	// utilizing c-shared/c-archive force external linking.

	SUBL	$(64*1024), AX		// stack size
	MOVL	AX, (g_stack+stack_lo)(DX)
	MOVL	AX, g_stackguard0(DX)
	MOVL	AX, g_stackguard1(DX)

	// Initialize procid from TOS struct.
	MOVL	_tos(SB), AX
	MOVL	48(AX), AX
	MOVL	AX, m_procid(CX)	// save pid as m->procid

	// Finally, initialize g.
	get_tls(BX)
	MOVL	DX, g(BX)

	CALL	runtime·stackcheck(SB)	// smashes AX, CX
	CALL	runtime·mstart(SB)

		minitSignalStack()
	}
	minitSignalMask()
	getg().m.procid = uint64(pthread_self())
}

// Called from dropm to undo the effect of an minit.
//
//go:nosplit
func unminit() {
	// iOS does not support alternate signal stack.
	// See minit.
	if !(GOOS == "ios" && GOARCH == "arm64") {
		unminitSignals()
	}
	getg().m.procid = 0
}

	MOVW	R0, g_stack+stack_hi(g)
	SUB	$(64*1024), R0
	MOVW	R0, (g_stack+stack_lo)(g)
	MOVW	R0, g_stackguard0(g)
	MOVW	R0, g_stackguard1(g)

	// Initialize procid from TOS struct.
	MOVW	_tos(SB), R0
	MOVW	48(R0), R0
	MOVW	R0, m_procid(R1)	// save pid as m->procid

	BL	runtime·mstart(SB)

	// Exit the thread.
	MOVW	$0, R0
	MOVW	R0, 4(R13)
	CALL	runtime·exits(SB)
	JMP	0(PC)