Alexandre Julliard : wow64: Allow the CPU backend to override CPU information.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: d41117b61ed3ccc34900c76611f6ce7b534521ce
URL:    https://gitlab.winehq.org/wine/wine/-/commit/d41117b61ed3ccc34900c76611f6ce7...

Author: Alexandre Julliard 
Date:   Wed Mar 22 13:20:00 2023 +0100

wow64: Allow the CPU backend to override CPU information.

---

dlls/wow64/syscall.c       | 3 ++-
 dlls/wow64/system.c        | 4 +++-
 dlls/wow64/wow64_private.h | 1 +
 3 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/dlls/wow64/syscall.c b/dlls/wow64/syscall.c
index d057fcc256e..06dd9822a08 100644
--- a/dlls/wow64/syscall.c
+++ b/dlls/wow64/syscall.c
@@ -110,7 +110,7 @@ static void     (WINAPI *pBTCpuSimulate)(void);
 static NTSTATUS (WINAPI *pBTCpuResetToConsistentState)( EXCEPTION_POINTERS * );
 static void *   (WINAPI *p__wine_get_unix_opcode)(void);
 static void *   (WINAPI *pKiRaiseUserExceptionDispatcher)(void);
-
+void (WINAPI *pBTCpuUpdateProcessorInformation)( SYSTEM_CPU_INFORMATION * ) = NULL;

void *dummy = RtlUnwind;

@@ -842,6 +842,7 @@ static DWORD WINAPI process_init( RTL_RUN_ONCE *once, void *param, void **contex
     GET_PTR( BTCpuResetToConsistentState );
     GET_PTR( BTCpuSetContext );
     GET_PTR( BTCpuSimulate );
+    GET_PTR( BTCpuUpdateProcessorInformation );
     GET_PTR( __wine_get_unix_opcode );

module = load_64bit_module( L"wow64win.dll" );
diff --git a/dlls/wow64/system.c b/dlls/wow64/system.c
index 5d111cc942d..21e191b8a29 100644
--- a/dlls/wow64/system.c
+++ b/dlls/wow64/system.c
@@ -337,7 +337,9 @@ NTSTATUS WINAPI wow64_NtQuerySystemInformation( UINT *args )

case SystemCpuInformation:  /* SYSTEM_CPU_INFORMATION */
     case SystemEmulationProcessorInformation:  /* SYSTEM_CPU_INFORMATION */
-        return NtQuerySystemInformation( SystemEmulationProcessorInformation, ptr, len, retlen );
+        status = NtQuerySystemInformation( SystemEmulationProcessorInformation, ptr, len, retlen );
+        if (!status && pBTCpuUpdateProcessorInformation) pBTCpuUpdateProcessorInformation( ptr );
+        return status;

case SystemBasicInformation:  /* SYSTEM_BASIC_INFORMATION */
     case SystemEmulationBasicInformation:  /* SYSTEM_BASIC_INFORMATION */
diff --git a/dlls/wow64/wow64_private.h b/dlls/wow64/wow64_private.h
index 7eef4da3ad9..bba191ad439 100644
--- a/dlls/wow64/wow64_private.h
+++ b/dlls/wow64/wow64_private.h
@@ -38,6 +38,7 @@ extern ULONG_PTR args_alignment DECLSPEC_HIDDEN;
 extern ULONG_PTR highest_user_address DECLSPEC_HIDDEN;
 extern ULONG_PTR default_zero_bits DECLSPEC_HIDDEN;
 extern SYSTEM_DLL_INIT_BLOCK *pLdrSystemDllInitBlock DECLSPEC_HIDDEN;
+extern void (WINAPI *pBTCpuUpdateProcessorInformation)( SYSTEM_CPU_INFORMATION * ) DECLSPEC_HIDDEN;

struct object_attr64
 {