Alexandre Julliard : ntdll: Implement KiUserApcDispatcher for ARM64EC.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 6a5bb5d7aa893a0a9b868237ba07f910c5846c2e
URL:    https://gitlab.winehq.org/wine/wine/-/commit/6a5bb5d7aa893a0a9b868237ba07f91...

Author: Alexandre Julliard 
Date:   Thu Dec  7 20:19:31 2023 +0100

ntdll: Implement KiUserApcDispatcher for ARM64EC.

---

dlls/ntdll/signal_arm64ec.c | 22 +++++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

diff --git a/dlls/ntdll/signal_arm64ec.c b/dlls/ntdll/signal_arm64ec.c
index 75b4c71bc9c..9422bdefc0f 100644
--- a/dlls/ntdll/signal_arm64ec.c
+++ b/dlls/ntdll/signal_arm64ec.c
@@ -1684,11 +1684,27 @@ NTSTATUS WINAPI KiUserExceptionDispatcher( EXCEPTION_RECORD *rec, CONTEXT *conte
 /*******************************************************************
  *		KiUserApcDispatcher (NTDLL.@)
  */
-void WINAPI KiUserApcDispatcher( CONTEXT *context, ULONG_PTR arg1, ULONG_PTR arg2, ULONG_PTR arg3,
-                                 PNTAPCFUNC apc )
+void WINAPI dispatch_apc( void (CALLBACK *func)(ULONG_PTR,ULONG_PTR,ULONG_PTR,CONTEXT*),
+                          ULONG_PTR arg1, ULONG_PTR arg2, ULONG_PTR arg3,
+                          BOOLEAN alertable, ARM64_NT_CONTEXT *arm_ctx )
 {
-    FIXME( "not implemented\n" );
+    CONTEXT context;
+
+    context_arm_to_x64( &context, arm_ctx );
+    func( arg1, arg2, arg3, &context );
+    NtContinue( &context, alertable );
 }
+__ASM_GLOBAL_FUNC( "#KiUserApcDispatcher",
+                   __ASM_SEH(".seh_context\n\t")
+                   "nop\n\t"
+                   __ASM_SEH(".seh_stackalloc 0x30\n\t")
+                   __ASM_SEH(".seh_endprologue\n\t")
+                   "ldp x0, x1, [sp]\n\t"         /* func, arg1 */
+                   "ldp x2, x3, [sp, #0x10]\n\t"  /* arg2, arg3 */
+                   "ldr w4, [sp, #0x20]\n\t"      /* alertable */
+                   "add x5, sp, #0x30\n\t"        /* context */
+                   "bl " __ASM_NAME("dispatch_apc") "\n\t"
+                   "brk #1" )

/*******************************************************************