From c1c2b4e8bbe17a3145f99fc745a61999e14bb8e7 Mon Sep 17 00:00:00 2001
From: sindoring <sindoringg@gmail.com>
Date: Wed, 5 Aug 2026 01:58:29 +0400
Subject: [PATCH] =?UTF-8?q?=D0=B4=D0=BE=D0=B1=D0=B0=D0=B2=D0=BB=D0=B5?=
 =?UTF-8?q?=D0=BD=20=D1=83=D0=BF=D1=83=D1=89=D0=B5=D0=BD=D0=BD=D1=8B=D0=B9?=
 =?UTF-8?q?=20laa?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 build-warcraftxl.ps1 | 119 ++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 111 insertions(+), 8 deletions(-)

diff --git a/build-warcraftxl.ps1 b/build-warcraftxl.ps1
index 4ad9486..ef9172b 100644
--- a/build-warcraftxl.ps1
+++ b/build-warcraftxl.ps1
@@ -8,6 +8,73 @@ param(
     [switch]$NativeRenderer
 )
 
+function Enable-LargeAddressAware {
+    param(
+        [Parameter(Mandatory)]
+        [string]$Path
+    )
+
+    $bytes = [System.IO.File]::ReadAllBytes($Path)
+
+    if ($bytes.Length -lt 64) {
+        throw "File is too small to be a valid PE executable: $Path"
+    }
+
+    # DOS header: MZ
+    if ($bytes[0] -ne 0x4D -or $bytes[1] -ne 0x5A) {
+        throw "DOS MZ signature was not found: $Path"
+    }
+
+    # IMAGE_DOS_HEADER.e_lfanew
+    $peOffset = [BitConverter]::ToInt32($bytes, 0x3C)
+
+    if ($peOffset -lt 0 -or ($peOffset + 24) -gt $bytes.Length) {
+        throw "Invalid PE header offset in: $Path"
+    }
+
+    # PE\0\0 signature
+    $peSignature = [BitConverter]::ToUInt32($bytes, $peOffset)
+
+    if ($peSignature -ne 0x00004550) {
+        throw "PE signature was not found: $Path"
+    }
+
+    # IMAGE_FILE_HEADER starts after the 4-byte PE signature.
+    # Characteristics is at offset 18 inside IMAGE_FILE_HEADER.
+    $characteristicsOffset = $peOffset + 4 + 18
+    $characteristics = [BitConverter]::ToUInt16(
+        $bytes,
+        $characteristicsOffset
+    )
+
+    $newCharacteristics = [uint16](
+        $characteristics -bor 0x0020
+    )
+
+    if ($newCharacteristics -ne $characteristics) {
+        $encoded = [BitConverter]::GetBytes($newCharacteristics)
+
+        $bytes[$characteristicsOffset] = $encoded[0]
+        $bytes[$characteristicsOffset + 1] = $encoded[1]
+
+        [System.IO.File]::WriteAllBytes($Path, $bytes)
+
+        Write-Host (
+            "LAA enabled for {0}: 0x{1:X4} -> 0x{2:X4}" -f
+            $Path,
+            $characteristics,
+            $newCharacteristics
+        ) -ForegroundColor Green
+    }
+    else {
+        Write-Host (
+            "LAA is already enabled for {0}: 0x{1:X4}" -f
+            $Path,
+            $characteristics
+        ) -ForegroundColor DarkGreen
+    }
+}
+
 $ErrorActionPreference = 'Stop'
 $repoRoot = $PSScriptRoot
 $cmake = 'C:\Program Files\Microsoft Visual Studio\2022\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe'
@@ -55,19 +122,55 @@ $selectedProxy = if ($NativeRenderer) { $nativeProxy } else { $modernProxy }
 $adtResources = Join-Path $repoRoot 'vendor\modules\wxl-modern-adt\_resources'
 
 function Install-WarcraftXLArtifacts {
-    param([Parameter(Mandatory)][string]$Destination)
+    param(
+        [Parameter(Mandatory)]
+        [string]$Destination
+    )
 
     $utils = Join-Path $Destination 'Utils'
     $loosePatch = Join-Path $Destination 'Data\Patch-WXL.MPQ'
-    New-Item -ItemType Directory -Path $Destination, $utils, $loosePatch -Force | Out-Null
 
-    Copy-Item -LiteralPath $stockExe -Destination (Join-Path $Destination 'Wow.exe') -Force
-    Copy-Item -LiteralPath $warcraftXL -Destination (Join-Path $Destination 'WarcraftXL.dll') -Force
-    Copy-Item -LiteralPath $selectedProxy -Destination (Join-Path $Destination 'd3d9.dll') -Force
-    Copy-Item -LiteralPath $nativeProxy -Destination (Join-Path $utils 'd3d9-native.dll') -Force
-    Copy-Item -LiteralPath $hostExe -Destination (Join-Path $utils 'WarcraftXLHost.exe') -Force
+    New-Item `
+        -ItemType Directory `
+        -Path $Destination, $utils, $loosePatch `
+        -Force |
+        Out-Null
+
+    $destinationExe = Join-Path $Destination 'Wow.exe'
+
+    Copy-Item `
+        -LiteralPath $stockExe `
+        -Destination $destinationExe `
+        -Force
+
+    Enable-LargeAddressAware -Path $destinationExe
+
+    Copy-Item `
+        -LiteralPath $warcraftXL `
+        -Destination (Join-Path $Destination 'WarcraftXL.dll') `
+        -Force
+
+    Copy-Item `
+        -LiteralPath $selectedProxy `
+        -Destination (Join-Path $Destination 'd3d9.dll') `
+        -Force
+
+    Copy-Item `
+        -LiteralPath $nativeProxy `
+        -Destination (Join-Path $utils 'd3d9-native.dll') `
+        -Force
+
+    Copy-Item `
+        -LiteralPath $hostExe `
+        -Destination (Join-Path $utils 'WarcraftXLHost.exe') `
+        -Force
+
     Get-ChildItem -LiteralPath $adtResources | ForEach-Object {
-        Copy-Item -LiteralPath $_.FullName -Destination $loosePatch -Recurse -Force
+        Copy-Item `
+            -LiteralPath $_.FullName `
+            -Destination $loosePatch `
+            -Recurse `
+            -Force
     }
 }