user32: Set %ecx to address of rect in EnumDisplayMonitors callback.
Sebastian Lackner
sebastian at fds-team.de
Wed Mar 30 22:51:41 CDT 2016
Signed-off-by: Sebastian Lackner <sebastian at fds-team.de>
---
For bug https://bugs.winehq.org/show_bug.cgi?id=24421.
dlls/user32/misc.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/dlls/user32/misc.c b/dlls/user32/misc.c
index 109809f..54be9c9 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")
--
2.7.1
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