// func runtime·doasanread(addr unsafe.Pointer, sz, sp, pc uintptr)
TEXT	runtime·doasanread(SB), NOSPLIT, $0-32
	MOVD	addr+0(FP), RARG0
	MOVD	sz+8(FP), RARG1
	MOVD	sp+16(FP), RARG2
	MOVD	pc+24(FP), RARG3
	// void __asan_read_go(void *addr, uintptr_t sz, void *sp, void *pc);
	MOVD	$__asan_read_go(SB), FARG
	JMP	asancall<>(SB)

// func runtime·doasanwrite(addr unsafe.Pointer, sz, sp, pc uintptr)
TEXT	runtime·doasanwrite(SB), NOSPLIT, $0-32

 */
struct context_arg {
	uintptr_t Context;
};
extern void (*(_cgo_get_context_function(void)))(struct context_arg*);

/*
 * The argument for the cgo traceback callback. See runtime.SetCgoTraceback.
 */
struct cgoTracebackArg {
	uintptr_t  Context;
	uintptr_t  SigContext;
	uintptr_t* Buf;
	uintptr_t  Max;
};

/*

// func runtime·doasanread(addr unsafe.Pointer, sz, sp, pc uintptr)
TEXT	runtime·doasanread(SB), NOSPLIT, $0-32
	MOVQ	addr+0(FP), RARG0
	MOVQ	sz+8(FP), RARG1
	MOVQ	sp+16(FP), RARG2
	MOVQ	pc+24(FP), RARG3
	// void __asan_read_go(void *addr, uintptr_t sz, void *sp, void *pc);
	MOVQ	$__asan_read_go(SB), AX
	JMP	asancall<>(SB)

// func runtime·doasanwrite(addr unsafe.Pointer, sz, sp, pc uintptr)
TEXT	runtime·doasanwrite(SB), NOSPLIT, $0-32

TEXT	runtime·asanpoison(SB), NOSPLIT, $0-16
	MOV	addr+0(FP), X10
	MOV	sz+8(FP), X11
	// void __asan_poison_go(void *addr, uintptr_t sz);
	MOV	$__asan_poison_go(SB), X14
	JMP	asancall<>(SB)

// func runtime·asanregisterglobals(addr unsafe.Pointer, n uintptr)
TEXT	runtime·asanregisterglobals(SB), NOSPLIT, $0-16
	MOV	addr+0(FP), X10
	MOV	n+8(FP), X11
	// void __asan_register_globals_go(void *addr, uintptr_t n);

TEXT	runtime·msanfree(SB), NOSPLIT, $0-16
	MOVV	addr+0(FP), RARG0
	MOVV	sz+8(FP), RARG1
	// void __msan_free_go(void *addr, uintptr_t sz);
	MOVV	$__msan_free_go(SB), FARG
	JMP	msancall<>(SB)

// func runtime·msanmove(dst, src unsafe.Pointer, sz uintptr)
TEXT	runtime·msanmove(SB), NOSPLIT, $0-24
	MOVV	dst+0(FP), RARG0
	MOVV	src+8(FP), RARG1
	MOVV	sz+16(FP), RARG2
	// void __msan_memmove(void *dst, void *src, uintptr_t sz);

TEXT	runtime·msanfree(SB), NOSPLIT, $0-16
	MOVQ	addr+0(FP), RARG0
	MOVQ	sz+8(FP), RARG1
	// void __msan_free_go(void *addr, uintptr_t sz);
	MOVQ	$__msan_free_go(SB), AX
	JMP	msancall<>(SB)

// func runtime·msanmove(dst, src unsafe.Pointer, sz uintptr)
TEXT	runtime·msanmove(SB), NOSPLIT, $0-24
	MOVQ	dst+0(FP), RARG0
	MOVQ	src+8(FP), RARG1
	MOVQ	sz+16(FP), RARG2
	// void __msan_memmove(void *dst, void *src, uintptr_t sz);

// func runtime·doasanread(addr unsafe.Pointer, sz, sp, pc uintptr)
TEXT	runtime·doasanread(SB), NOSPLIT, $0-32
	MOVV	addr+0(FP), RARG0
	MOVV	sz+8(FP), RARG1
	MOVV	sp+16(FP), RARG2
	MOVV	pc+24(FP), RARG3
	// void __asan_read_go(void *addr, uintptr_t sz, void *sp, void *pc);
	MOVV	$__asan_read_go(SB), FARG
	JMP	asancall<>(SB)

// func runtime·doasanwrite(addr unsafe.Pointer, sz, sp, pc uintptr)
TEXT	runtime·doasanwrite(SB), NOSPLIT, $0-32

TEXT	runtime·msanfree(SB), NOSPLIT, $0-16
	MOVD	addr+0(FP), RARG0
	MOVD	sz+8(FP), RARG1
	// void __msan_free_go(void *addr, uintptr_t sz);
	MOVD	$__msan_free_go(SB), FARG
	JMP	msancall<>(SB)

// func runtime·msanmove(dst, src unsafe.Pointer, sz uintptr)
TEXT	runtime·msanmove(SB), NOSPLIT, $0-24
	MOVD	dst+0(FP), RARG0
	MOVD	src+8(FP), RARG1
	MOVD	sz+16(FP), RARG2
	// void __msan_memmove(void *dst, void *src, uintptr_t sz);

//
// For instance, on the Go side:
//
//	package main
//
//	/*
//	#include <stdint.h> // for uintptr_t
//
//	extern void MyGoPrint(uintptr_t handle);
//	void myprint(uintptr_t handle);
//	*/
//	import "C"
//	import "runtime/cgo"
//
//	//export MyGoPrint
//	func MyGoPrint(handle C.uintptr_t) {
//		h := cgo.Handle(handle)
//		val := h.Value().(string)
//		println(val)
//		h.Delete()
//	}
//

#include <stdint.h>
int ioctl(int, unsigned long int, uintptr_t);
*/
import "C"

func ioctl(fd int, req uint, arg uintptr) (err error) {
	r0, er := C.ioctl(C.int(fd), C.ulong(req), C.uintptr_t(arg))
	if r0 == -1 && er != nil {
		err = er
	}
	return
}

func ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) {
	r0, er := C.ioctl(C.int(fd), C.ulong(req), C.uintptr_t(uintptr(arg)))
	if r0 == -1 && er != nil {
		err = er