Sebastian Lackner : user32: Set %ecx to address of rect in EnumDisplayMonitors callback.
Alexandre Julliard
julliard at wine.codeweavers.com
Thu Mar 31 11:42:56 CDT 2016
Module: wine
Branch: master
Commit: 11f6df13eb23260331d9ca8412b9323dbe942885
URL: http://source.winehq.org/git/wine.git/?a=commit;h=11f6df13eb23260331d9ca8412b9323dbe942885
Author: Sebastian Lackner <sebastian at fds-team.de>
Date: Thu Mar 31 05:51:41 2016 +0200
user32: Set %ecx to address of rect in EnumDisplayMonitors callback.
Signed-off-by: Sebastian Lackner <sebastian at fds-team.de>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>
---
dlls/user32/misc.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/dlls/user32/misc.c b/dlls/user32/misc.c
index 109809f..4faea6b 100644
--- a/dlls/user32/misc.c
+++ b/dlls/user32/misc.c
@@ -471,6 +471,7 @@ BOOL WINAPI GetMonitorInfoW(HMONITOR hMonitor, LPMONITORINFO lpMonitorInfo)
#ifdef __i386__
/* Some apps pass a non-stdcall callback to EnumDisplayMonitors,
* so we need a small assembly wrapper to call it.
+ * MJ's Help Diagnostic expects that %ecx contains the address to the rect.
*/
struct enumdisplaymonitors_lparam
{
@@ -491,6 +492,7 @@ __ASM_STDCALL_FUNC( enumdisplaymonitors_callback_wrapper, 16,
"pushl 16(%ebp)\n\t"
"pushl 12(%ebp)\n\t"
"pushl 8(%ebp)\n\t"
+ "movl 16(%ebp),%ecx\n\t"
"call *(%eax)\n\t" /* call orig->proc */
"leave\n\t"
__ASM_CFI(".cfi_def_cfa %esp,4\n\t")
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