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Original patch code by Valve Corporation
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Original commits:
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https://github.com/ValveSoftware/wine/commit/62c9478e4768e94e841da2ef75eb778ed346e3ab
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LICENSE: See https://github.com/ValveSoftware/wine
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Target Wine version of this patch file:
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Wine 4.9 (Staging)
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--- a/dlls/ntdll/virtual.c
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+++ b/dlls/ntdll/virtual.c
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@@ -2531,11 +2531,11 @@ void virtual_release_address_space(void)
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*
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* Enable use of a large address space when allowed by the application.
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*/
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-void virtual_set_large_address_space(void)
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+void virtual_set_large_address_space(BOOL force_large_address)
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{
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IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
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- if (!(nt->FileHeader.Characteristics & IMAGE_FILE_LARGE_ADDRESS_AWARE)) return;
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+ if (!(nt->FileHeader.Characteristics & IMAGE_FILE_LARGE_ADDRESS_AWARE) && !force_large_address) return;
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/* no large address space on win9x */
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if (NtCurrentTeb()->Peb->OSPlatformId != VER_PLATFORM_WIN32_NT) return;
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--- a/dlls/ntdll/loader.c
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+++ b/dlls/ntdll/loader.c
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@@ -2194,6 +2194,126 @@ static BOOL is_valid_binary( HMODULE mod
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#endif
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}
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+/***************************************************************************
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+ * get_basename
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+ *
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+ * Return the base name of a file name (i.e. remove the path components).
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+ */
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+static const WCHAR *get_basename( const WCHAR *name )
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+{
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+ const WCHAR *ptr;
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+
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+ if (name[0] && name[1] == ':') name += 2; /* strip drive specification */
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+ if ((ptr = strrchrW( name, '\\' ))) name = ptr + 1;
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+ if ((ptr = strrchrW( name, '/' ))) name = ptr + 1;
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+ return name;
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+}
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+
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+
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+/***************************************************************************
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+ * large_address_aware_env
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+ *
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+ * Checks for override for LARGE_ADDRESS_AWARE bit in environment. Takes
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+ * precedence over any AppDefaults registry entry.
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+ *
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+ * Returns:
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+ * -1 if not defined in environment (prefer registry entries)
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+ * 0 if disabled
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+ * 1 if enabled
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+ */
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+static int large_address_aware_env( void )
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+{
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+ static int large_address_aware_cached = -2;
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+
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+ if (large_address_aware_cached == -2) {
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+ const char *envvar = getenv("WINE_LARGE_ADDRESS_AWARE");
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+ if (envvar)
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+ large_address_aware_cached = atoi(envvar);
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+ else
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+ large_address_aware_cached = -1;
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+ }
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+
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+ return large_address_aware_cached;
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+}
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+
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+/***************************************************************************
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+ * needs_override_large_address_aware
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+ *
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+ * Checks for AppDefaults override for LARGE_ADDRESS_AWARE bit.
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+ *
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+ * Returns:
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+ * TRUE if override was found in the registry, or environment variable
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+ * explicitly enabled this override
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+ * FALSE if no override was found in the registry, or environment variable
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+ * explicitly disabled this override
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+ */
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+static BOOL needs_override_large_address_aware(const WCHAR *exename)
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+{
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+ BOOL result;
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+ OBJECT_ATTRIBUTES attr;
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+ UNICODE_STRING nameW;
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+ UNICODE_STRING valueNameW;
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+ HANDLE root;
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+ WCHAR *str;
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+ static const WCHAR AppDefaultsW[] = {'S','o','f','t','w','a','r','e','\\','W','i','n','e','\\',
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+ 'A','p','p','D','e','f','a','u','l','t','s','\\',0};
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+ static const WCHAR LargeAddressAwareW[] = {'L','a','r','g','e','A','d','d','r','e','s','s','A','w','a','r','e',0};
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+ char tmp[64];
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+ KEY_VALUE_PARTIAL_INFORMATION *info = (KEY_VALUE_PARTIAL_INFORMATION *)tmp;
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+ DWORD count;
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+ int env_override;
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+ HANDLE app_key = (HANDLE)-1;
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+
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+ /* Environment variable takes precedence. */
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+ env_override = large_address_aware_env();
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+ if (large_address_aware_env() >= 0)
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+ return env_override;
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+
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+ exename = get_basename(exename);
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+
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+ if (app_key != (HANDLE)-1) return FALSE;
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+
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+ str = RtlAllocateHeap( GetProcessHeap(), 0,
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+ sizeof(AppDefaultsW) + strlenW(exename) * sizeof(WCHAR) );
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+ if (!str) return FALSE;
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+ strcpyW( str, AppDefaultsW );
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+ strcatW( str, exename );
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+
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+ RtlOpenCurrentUser( KEY_ALL_ACCESS, &root );
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+ attr.Length = sizeof(attr);
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+ attr.RootDirectory = root;
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+ attr.ObjectName = &nameW;
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+ attr.Attributes = 0;
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+ attr.SecurityDescriptor = NULL;
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+ attr.SecurityQualityOfService = NULL;
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+ RtlInitUnicodeString( &nameW, str );
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+ RtlInitUnicodeString( &valueNameW, LargeAddressAwareW );
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+
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+ result = FALSE;
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+
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+ /* @@ Wine registry key: HKCU\Software\Wine\AppDefaults\app.exe */
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+ if (!NtOpenKey( &app_key, KEY_ALL_ACCESS, &attr ))
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+ {
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+ if (!NtQueryValueKey( app_key, &valueNameW, KeyValuePartialInformation, tmp, sizeof(tmp)-1, &count))
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+ {
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+ if (info->DataLength >= sizeof(DWORD))
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+ {
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+ if ((*(DWORD *)info->Data) != 0)
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+ result = TRUE;
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+ }
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+ }
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+ NtClose( app_key );
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+ }
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+ NtClose( root );
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+ RtlFreeHeap( GetProcessHeap(), 0, str );
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+ return result;
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+}
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+
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+BOOL CDECL __wine_needs_override_large_address_aware(void)
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+{
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+ PEB *peb = NtCurrentTeb()->Peb;
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+ return needs_override_large_address_aware(peb->ProcessParameters->ImagePathName.Buffer);
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+}
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/***********************************************************************
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* open_dll_file
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@@ -4030,7 +4150,7 @@ void __wine_process_init(void)
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version_init( wm->ldr.FullDllName.Buffer );
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user_shared_data_init();
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hidden_exports_init( wm->ldr.FullDllName.Buffer );
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- virtual_set_large_address_space();
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+ virtual_set_large_address_space(needs_override_large_address_aware(NtCurrentTeb()->Peb->ProcessParameters->ImagePathName.Buffer));
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LdrQueryImageFileExecutionOptions( &wm->ldr.FullDllName, globalflagW, REG_DWORD,
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&NtCurrentTeb()->Peb->NtGlobalFlag, sizeof(DWORD), NULL );
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--- a/dlls/ntdll/ntdll.spec
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+++ b/dlls/ntdll/ntdll.spec
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@@ -1518,6 +1518,7 @@
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# Virtual memory
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@ cdecl __wine_locked_recvmsg(long ptr long)
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+@ cdecl __wine_needs_override_large_address_aware()
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# Token
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@ cdecl __wine_create_default_token(long)
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--- b/dlls/ntdll/ntdll_misc.h
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+++ b/dlls/ntdll/ntdll_misc.h
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@@ -197,7 +197,7 @@ extern SIZE_T virtual_uninterrupted_read
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extern NTSTATUS virtual_uninterrupted_write_memory( void *addr, const void *buffer, SIZE_T size ) DECLSPEC_HIDDEN;
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extern void VIRTUAL_SetForceExec( BOOL enable ) DECLSPEC_HIDDEN;
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extern void virtual_release_address_space(void) DECLSPEC_HIDDEN;
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-extern void virtual_set_large_address_space(void) DECLSPEC_HIDDEN;
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+extern void virtual_set_large_address_space( BOOL force ) DECLSPEC_HIDDEN;
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extern void virtual_fill_image_information( const pe_image_info_t *pe_info,
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SECTION_IMAGE_INFORMATION *info ) DECLSPEC_HIDDEN;
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extern struct _KUSER_SHARED_DATA *user_shared_data DECLSPEC_HIDDEN;
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