[reactos] 01/04: [XDK] Improve unaligned pointer read macros

[Timo Kreuzer]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=a0bbb9ef99a812c67ccd9a...

commit a0bbb9ef99a812c67ccd9a2f16016c01b2867444
Author:     Timo Kreuzer [e-mail]
AuthorDate: Wed Sep 11 10:57:42 2024 +0300
Commit:     Timo Kreuzer [e-mail]
CommitDate: Sun Sep 15 12:09:09 2024 +0300

[XDK] Improve unaligned pointer read macros

- The #if was missing x86 (Windows SDK bug!)
    - The unaligned attribute was on the wrong side (Windows SDK bug!)
    - Add a comment that these are unsafe and shouldn't be used
---
 sdk/include/xdk/rtlfuncs.h | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/sdk/include/xdk/rtlfuncs.h b/sdk/include/xdk/rtlfuncs.h
index 88fd0f76baa..8f5ed2854ba 100644
--- a/sdk/include/xdk/rtlfuncs.h
+++ b/sdk/include/xdk/rtlfuncs.h
@@ -829,7 +829,13 @@ RtlSetDaclSecurityDescriptor(
   _In_opt_ PACL Dacl,
   _In_opt_ BOOLEAN DaclDefaulted);

-#if defined(_AMD64_)
+//
+// These functions are really bad and shouldn't be used.
+// They have no type checking and can easily overwrite the target
+// variable or only set half of it.
+// Use Read/WriteUnalignedU16/U32/U64 from reactos/unaligned.h instead.
+//
+#if defined(_AMD64_) || defined(_M_AMD64) || defined(_X86) || defined(_M_IX86)

/* VOID
  * RtlStoreUlong(
@@ -861,7 +867,7 @@ RtlSetDaclSecurityDescriptor(
  *    PUSHORT SourceAddress);
  */
 #define RtlRetrieveUshort(DestAddress,SrcAddress) \
-    *(USHORT UNALIGNED *)(DestAddress) = *(USHORT)(SrcAddress)
+    *(USHORT*)(DestAddress) = *(USHORT UNALIGNED *)(SrcAddress)

/* VOID
  * RtlRetrieveUlong(
@@ -869,7 +875,7 @@ RtlSetDaclSecurityDescriptor(
  *    PULONG SourceAddress);
  */
 #define RtlRetrieveUlong(DestAddress,SrcAddress) \
-    *(ULONG UNALIGNED *)(DestAddress) = *(PULONG)(SrcAddress)
+    *(ULONG*)(DestAddress) = *(ULONG UNALIGNED *)(SrcAddress)

#else

@@ -927,7 +933,7 @@ RtlSetDaclSecurityDescriptor(
         *((PULONG)(DestAddress))=*((PULONG)(SrcAddress)); \
     }

-#endif /* defined(_AMD64_) */
+#endif /* defined(_AMD64_) || defined(_M_AMD64) || defined(_X86) || defined(_M_IX86) */

#ifdef _WIN64
 /* VOID