Alexandre Julliard : ntdll: Implement RtlWalkFrameChain on i386.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 37ded7380e6e79f52ecb01c9f3d284bb51376a6e
URL:    https://gitlab.winehq.org/wine/wine/-/commit/37ded7380e6e79f52ecb01c9f3d284b...

Author: Alexandre Julliard 
Date:   Mon Mar 11 16:52:50 2024 +0100

ntdll: Implement RtlWalkFrameChain on i386.

---

dlls/ntdll/signal_i386.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/dlls/ntdll/signal_i386.c b/dlls/ntdll/signal_i386.c
index 178848cd7ca..cade0c973c2 100644
--- a/dlls/ntdll/signal_i386.c
+++ b/dlls/ntdll/signal_i386.c
@@ -451,6 +451,29 @@ __ASM_STDCALL_FUNC( RtlRaiseException, 4,
                     "ret $4" )  /* actually never returns */

+/*************************************************************************
+ *		RtlWalkFrameChain (NTDLL.@)
+ */
+ULONG WINAPI RtlWalkFrameChain( void **buffer, ULONG count, ULONG flags )
+{
+    CONTEXT context;
+    ULONG *frame;
+    ULONG i, skip = flags >> 8, pos = 0;
+
+    RtlCaptureContext( &context );
+
+    for (i = 0; i < count; i++)
+    {
+        if (!is_valid_frame( context.Ebp )) break;
+        if (i >= skip) buffer[pos++] = (void *)context.Eip;
+        frame = (ULONG *)context.Ebp;
+        context.Ebp = frame[0];
+        context.Eip = frame[1];
+    }
+    return pos;
+}
+
+
 /*************************************************************************
  *		RtlCaptureStackBackTrace (NTDLL.@)
  */