[PATCH 1/1] ntdll: Handle calling convention mismatch.

[Eric Pouech]

From: Eric Pouech

That's obviously kinda hacky.
Alternatively, we could have a proper wrapper for the entry point.
Didn't consider the i386 case as the thread entry point never returns.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=55014

Signed-off-by: Eric Pouech 
---
 dlls/ntdll/unix/serial.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/dlls/ntdll/unix/serial.c b/dlls/ntdll/unix/serial.c
index 734f88aa449..15da2d76a29 100644
--- a/dlls/ntdll/unix/serial.c
+++ b/dlls/ntdll/unix/serial.c
@@ -937,11 +937,18 @@ static DWORD check_events(int fd, UINT mask,
  *  TIOCMIWAIT only checks modem status line and may not be aborted by a changing mask
  *
  */
-static void CALLBACK wait_for_event(LPVOID arg)
+static void wait_for_event(LPVOID arg)
 {
     async_commio *commio = arg;
     int fd, needs_close;

+#ifdef __x86_64__
+    /* NtCreateThread expects a ms_abi (stdcall) calling convention, that we don't have on unix side...
+     * so grab directly from effective register.
+     */
+    __asm__ ( "mov %%rcx, %0" : "=rm" ( commio ));
+#endif
+
     if (!server_get_unix_fd( commio->hDevice, FILE_READ_DATA | FILE_WRITE_DATA, &fd, &needs_close, NULL, NULL ))
     {
         serial_irq_info new_irq_info;