//go:cgo_unsafe_args
func stdcall4(fn stdFunction, a0, a1, a2, a3 uintptr) uintptr {
	mp := getg().m
	mp.libcall.n = 4
	mp.libcall.args = uintptr(noescape(unsafe.Pointer(&a0)))
	return stdcall(fn)
}

//go:nosplit
//go:cgo_unsafe_args
func stdcall5(fn stdFunction, a0, a1, a2, a3, a4 uintptr) uintptr {
	mp := getg().m
	mp.libcall.n = 5
	mp.libcall.args = uintptr(noescape(unsafe.Pointer(&a0)))
	return stdcall(fn)
}

	var werflags uintptr
	stdcall2(_WerGetFlags, currentProcess, uintptr(unsafe.Pointer(&werflags)))
	stdcall1(_WerSetFlags, werflags|_WER_FAULT_REPORTING_NO_UI)
}

// enableWER re-enables Windows error reporting without fault reporting UI.
func enableWER() {
	// re-enable Windows Error Reporting
	errormode := stdcall0(_GetErrorMode)
	if errormode&_SEM_NOGPFAULTERRORBOX != 0 {
		stdcall1(_SetErrorMode, errormode^_SEM_NOGPFAULTERRORBOX)

	errno := stdcall2(_NtCancelWaitCompletionPacket, mp.waitIocpHandle, 1)
	switch errno {
	case STATUS_CANCELLED:
		// STATUS_CANCELLED is returned when the associated timer has already expired,
		// in which automatically cancels the wait completion packet.
		fallthrough
	case STATUS_SUCCESS:
		dt := -delay / 100 // relative sleep (negative), 100ns units

// which prevents us from allocating more stack.
//
//go:nosplit
func sysAllocOS(n uintptr) unsafe.Pointer {
	return unsafe.Pointer(stdcall4(_VirtualAlloc, 0, n, _MEM_COMMIT|_MEM_RESERVE, _PAGE_READWRITE))
}

func sysUnusedOS(v unsafe.Pointer, n uintptr) {
	r := stdcall3(_VirtualFree, uintptr(v), n, _MEM_DECOMMIT)
	if r != 0 {
		return
	}

	// Decommit failed. Usual reason is that we've merged memory from two different

import "unsafe"

const MaxArgs = maxArgs

var (
	OsYield                 = osyield
	TimeBeginPeriodRetValue = &timeBeginPeriodRetValue
)

func NumberOfProcessors() int32 {
	var info systeminfo
	stdcall1(_GetSystemInfo, uintptr(unsafe.Pointer(&info)))
	return int32(info.dwnumberofprocessors)
}

type ContextStub struct {
	context
}

func (c ContextStub) GetPC() uintptr {
	return c.ip()
}

}

type callbackArgs struct {
	index uintptr
	// args points to the argument block.
	//
	// For cdecl and stdcall, all arguments are on the stack.
	//
	// For fastcall, the trampoline spills register arguments to
	// the reserved spill slots below the stack arguments,
	// resulting in a layout equivalent to stdcall.
	//
	// For arm, the trampoline stores the register arguments just

	CMPL	CX, $0
	JE	docall

	// Copy args to the stack.
	MOVL	CX, AX
	SALL	$2, AX
	SUBL	AX, SP			// room for args
	MOVL	SP, DI
	MOVL	libcall_args(BX), SI
	CLD
	REP; MOVSL

docall:
	// Call stdcall or cdecl function.
	// DI SI BP BX are preserved, SP is not
	CALL	libcall_fn(BX)
	MOVL	BP, SP

	// Return result.
	MOVL	fn+0(FP), BX
	MOVL	AX, libcall_r1(BX)
	MOVL	DX, libcall_r2(BX)

	// GetLastError().

			dll := syscall.MustLoadDLL(dllPath)
			defer dll.Release()
			for _, cbf := range getCallbackTestFuncs() {
				t.Run(cbf.cName(false), func(t *testing.T) {
					stdcall := syscall.NewCallback(cbf.goFunc)
					cbf.testOne(t, dll, false, stdcall)
				})
				t.Run(cbf.cName(true), func(t *testing.T) {
					cdecl := syscall.NewCallbackCDecl(cbf.goFunc)
					cbf.testOne(t, dll, true, cdecl)
				})
			}
		})
	}

_4args:
	MOVQ	24(SI), R9
	MOVQ	R9, X3
_3args:
	MOVQ	16(SI), R8
	MOVQ	R8, X2
_2args:
	MOVQ	8(SI), DX
	MOVQ	DX, X1
_1args:
	MOVQ	0(SI), CX
	MOVQ	CX, X0
_0args:

	// Call stdcall function.
	CALL	AX

	ADDQ	$(const_maxArgs*8), SP

	// Return result.
	MOVQ	0(SP), CX
	MOVQ	8(SP), SP
	MOVQ	AX, libcall_r1(CX)
	// Floating point return values are returned in XMM0. Setting r2 to this

					fname := podOutputPath(workDir, c, pod, fmt.Sprintf("%s.envoy.err.log", container.Name))
					stdAll := stdout + stderr
					if err = os.WriteFile(fname, []byte(stdAll), os.ModePerm); err != nil {
						scopes.Framework.Warnf("Unable to write envoy err log for VM cluster/pod/container: %s/%s/%s/%s: %v",
							c.Name(), pod.Namespace, pod.Name, container.Name, err)