From ecae4b6a0bbab109b0e47004af19befa58522958 Mon Sep 17 00:00:00 2001
From: "Herman S." <429230+has207@users.noreply.github.com>
Date: Sun, 15 Mar 2026 22:19:57 +0900
Subject: [PATCH] [Base/Mem] Add platform guard for AVX/SSE streaming stores in
 vastcpy.

Prevents build failures on non-x86 platforms
---
 src/xenia/base/memory.cc | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/xenia/base/memory.cc b/src/xenia/base/memory.cc
index 8d9cb3dc6..f34dc1722 100644
--- a/src/xenia/base/memory.cc
+++ b/src/xenia/base/memory.cc
@@ -32,6 +32,7 @@ bool IsWritableExecutableMemoryPreferred() {
 
 using xe::swcache::CacheLine;
 
+#if XE_ARCH_AMD64
 static constexpr unsigned NUM_CACHELINES_IN_PAGE = 4096 / sizeof(CacheLine);
 
 #if defined(__clang__)
@@ -216,6 +217,13 @@ void vastcpy(uint8_t* XE_RESTRICT physaddr, uint8_t* XE_RESTRICT rdmapping,
   return vastcpy_dispatch((CacheLine*)physaddr, (CacheLine*)rdmapping,
                           written_length);
 }
+#else   // !XE_ARCH_AMD64
+XE_NOINLINE
+void vastcpy(uint8_t* XE_RESTRICT physaddr, uint8_t* XE_RESTRICT rdmapping,
+             uint32_t written_length) {
+  std::memcpy(physaddr, rdmapping, written_length);
+}
+#endif  // XE_ARCH_AMD64
 }  // namespace memory
 
 // TODO(benvanik): fancy AVX versions.