wireguard-go/tun/wintun/memmod/memmod_windows_64.go
Jason A. Donenfeld d4112d9096 global: bump copyright
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-28 17:52:15 +01:00

37 lines
843 B
Go

// +build windows,amd64 windows,arm64
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
*/
package memmod
import (
"fmt"
"golang.org/x/sys/windows"
)
func (opthdr *IMAGE_OPTIONAL_HEADER) imageOffset() uintptr {
return uintptr(opthdr.ImageBase & 0xffffffff00000000)
}
func (module *Module) check4GBBoundaries(alignedImageSize uintptr) (err error) {
for (module.codeBase >> 32) < ((module.codeBase + alignedImageSize) >> 32) {
node := &addressList{
next: module.blockedMemory,
address: module.codeBase,
}
module.blockedMemory = node
module.codeBase, err = windows.VirtualAlloc(0,
alignedImageSize,
windows.MEM_RESERVE|windows.MEM_COMMIT,
windows.PAGE_READWRITE)
if err != nil {
return fmt.Errorf("Error allocating memory block: %w", err)
}
}
return
}