blob: 43c05539815742c728967bc6853a93e0885b1533 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
// +build windows,amd64 windows,arm64
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2020 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
}
|
