/* SPDX-License-Identifier: MIT
 *
 * Copyright (C) 2019-2020 WireGuard LLC. All Rights Reserved.
 */

package updater

import "golang.org/x/sys/windows"

const (
	// TODO: Push those constants upstream. golang.zx2c4.com/wireguard/tun/wintun/memmod is declaring them too. It will share the benefit.
	IMAGE_FILE_MACHINE_UNKNOWN     = 0
	IMAGE_FILE_MACHINE_TARGET_HOST = 0x0001 // Useful for indicating we want to interact with the host and not a WoW guest.
	IMAGE_FILE_MACHINE_I386        = 0x014c // Intel 386.
	IMAGE_FILE_MACHINE_R3000       = 0x0162 // MIPS little-endian, 0x160 big-endian
	IMAGE_FILE_MACHINE_R4000       = 0x0166 // MIPS little-endian
	IMAGE_FILE_MACHINE_R10000      = 0x0168 // MIPS little-endian
	IMAGE_FILE_MACHINE_WCEMIPSV2   = 0x0169 // MIPS little-endian WCE v2
	IMAGE_FILE_MACHINE_ALPHA       = 0x0184 // Alpha_AXP
	IMAGE_FILE_MACHINE_SH3         = 0x01a2 // SH3 little-endian
	IMAGE_FILE_MACHINE_SH3DSP      = 0x01a3
	IMAGE_FILE_MACHINE_SH3E        = 0x01a4 // SH3E little-endian
	IMAGE_FILE_MACHINE_SH4         = 0x01a6 // SH4 little-endian
	IMAGE_FILE_MACHINE_SH5         = 0x01a8 // SH5
	IMAGE_FILE_MACHINE_ARM         = 0x01c0 // ARM Little-Endian
	IMAGE_FILE_MACHINE_THUMB       = 0x01c2 // ARM Thumb/Thumb-2 Little-Endian
	IMAGE_FILE_MACHINE_ARMNT       = 0x01c4 // ARM Thumb-2 Little-Endian
	IMAGE_FILE_MACHINE_AM33        = 0x01d3
	IMAGE_FILE_MACHINE_POWERPC     = 0x01F0 // IBM PowerPC Little-Endian
	IMAGE_FILE_MACHINE_POWERPCFP   = 0x01f1
	IMAGE_FILE_MACHINE_IA64        = 0x0200 // Intel 64
	IMAGE_FILE_MACHINE_MIPS16      = 0x0266 // MIPS
	IMAGE_FILE_MACHINE_ALPHA64     = 0x0284 // ALPHA64
	IMAGE_FILE_MACHINE_MIPSFPU     = 0x0366 // MIPS
	IMAGE_FILE_MACHINE_MIPSFPU16   = 0x0466 // MIPS
	IMAGE_FILE_MACHINE_AXP64       = IMAGE_FILE_MACHINE_ALPHA64
	IMAGE_FILE_MACHINE_TRICORE     = 0x0520 // Infineon
	IMAGE_FILE_MACHINE_CEF         = 0x0CEF
	IMAGE_FILE_MACHINE_EBC         = 0x0EBC // EFI Byte Code
	IMAGE_FILE_MACHINE_AMD64       = 0x8664 // AMD64 (K8)
	IMAGE_FILE_MACHINE_M32R        = 0x9041 // M32R little-endian
	IMAGE_FILE_MACHINE_ARM64       = 0xAA64 // ARM64 Little-Endian
	IMAGE_FILE_MACHINE_CEE         = 0xC0EE
)

//sys	isWow64Process2Internal(process windows.Handle, processMachine *uint16, nativeMachine *uint16) (err error) = kernel32.IsWow64Process2

func isWow64Process2(process windows.Handle) (processMachine, nativeMachine uint16, err error) {
	err = procIsWow64Process2.Find()
	if err != nil {
		return
	}
	err = isWow64Process2Internal(process, &processMachine, &nativeMachine)
	return
}