From bd8887ce135e55e7a91d93084791632e8292be16 Mon Sep 17 00:00:00 2001
From: Mikhail Krichanov <mikhailkrichanov@gmail.com>
Date: Mon, 9 Sep 2024 19:49:20 +0300
Subject: [PATCH] SysCall/X64: Fixed CallBootService() for VS2019.

---
 MdeModulePkg/Core/Dxe/SysCall/X64/CoreBootServices.nasm | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/MdeModulePkg/Core/Dxe/SysCall/X64/CoreBootServices.nasm b/MdeModulePkg/Core/Dxe/SysCall/X64/CoreBootServices.nasm
index 9d72b81935..ca65415006 100644
--- a/MdeModulePkg/Core/Dxe/SysCall/X64/CoreBootServices.nasm
+++ b/MdeModulePkg/Core/Dxe/SysCall/X64/CoreBootServices.nasm
@@ -147,8 +147,8 @@ ASM_PFX(CoreBootServices):
     push    r8
     push    rdx
     mov     rbp, rsp
-    ; Reserve space on stack for 3 CallBootService arguments (NOOPT prerequisite).
-    sub     rsp, 8*3
+    ; Reserve space on stack for 4 CallBootService arguments (NOOPT prerequisite).
+    sub     rsp, 8*4
 
     ; Prepare CallBootService arguments.
     mov     rcx, r10
@@ -165,7 +165,7 @@ ASM_PFX(CoreBootServices):
     pop     rax
 
     ; Step over Arguments [1..3] and NOOPT buffer.
-    add     rsp, 8*6
+    add     rsp, 8*7
 
     ; Prepare SYSRET arguments.
     pop     r11