Alexandre Julliard : ntdll: Build __chkstk as x86-64 code on ARM64EC.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 6d931c271a9c9df332c0a9fe084f667919f7081a
URL:    https://gitlab.winehq.org/wine/wine/-/commit/6d931c271a9c9df332c0a9fe084f667...

Author: Alexandre Julliard 
Date:   Thu May  2 09:28:00 2024 +0200

ntdll: Build __chkstk as x86-64 code on ARM64EC.

Based on a patch by Jacek Caban.

---

dlls/ntdll/signal_arm64ec.c | 11 -----------
 dlls/ntdll/signal_x86_64.c  | 26 +++++++++++++++++---------
 2 files changed, 17 insertions(+), 20 deletions(-)

diff --git a/dlls/ntdll/signal_arm64ec.c b/dlls/ntdll/signal_arm64ec.c
index e9e9b2a6bb3..8caf4218ab9 100644
--- a/dlls/ntdll/signal_arm64ec.c
+++ b/dlls/ntdll/signal_arm64ec.c
@@ -2323,17 +2323,6 @@ static void __attribute__((naked)) arm64x_check_call(void)
 }

-/**************************************************************************
- *		__chkstk (NTDLL.@)
- *
- * Supposed to touch all the stack pages, but we shouldn't need that.
- */
-void __attribute__((naked)) __chkstk(void)
-{
-    asm( "ret" );
-}
-
-
 /**************************************************************************
  *		__chkstk_arm64ec (NTDLL.@)
  *
diff --git a/dlls/ntdll/signal_x86_64.c b/dlls/ntdll/signal_x86_64.c
index 78afadbe387..d6218dc61b7 100644
--- a/dlls/ntdll/signal_x86_64.c
+++ b/dlls/ntdll/signal_x86_64.c
@@ -18,7 +18,11 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */

-#if defined(__x86_64__) && !defined(__arm64ec__)
+#if 0
+#pragma makedep arm64ec_x64
+#endif
+
+#ifdef __x86_64__

#include <stdlib.h>
 #include <stdarg.h>
@@ -34,6 +38,17 @@
 #include "wine/debug.h"
 #include "ntsyscalls.h"

+
+/**************************************************************************
+ *		__chkstk (NTDLL.@)
+ *
+ * Supposed to touch all the stack pages, but we shouldn't need that.
+ */
+__ASM_GLOBAL_FUNC( __chkstk, "ret" );
+
+
+#ifndef __arm64ec_x64__
+
 WINE_DEFAULT_DEBUG_CHANNEL(seh);
 WINE_DECLARE_DEBUG_CHANNEL(relay);

@@ -81,14 +96,6 @@ static NTSTATUS virtual_unwind( ULONG type, DISPATCHER_CONTEXT *dispatch, CONTEX
 }

-/**************************************************************************
- *		__chkstk (NTDLL.@)
- *
- * Supposed to touch all the stack pages, but we shouldn't need that.
- */
-__ASM_GLOBAL_FUNC( __chkstk, "ret" );
-
-
 /***********************************************************************
  *		RtlCaptureContext (NTDLL.@)
  */
@@ -1043,4 +1050,5 @@ __ASM_GLOBAL_FUNC( DbgUserBreakPoint, "int $3; ret"
                     "\n\tnop; nop; nop; nop; nop; nop; nop; nop"
                     "\n\tnop; nop; nop; nop; nop; nop" );

+#endif  /* __arm64ec_x64__ */
 #endif  /* __x86_64__ */