From 067284733075fb0604dbcdc6238d23cfa27c5355 Mon Sep 17 00:00:00 2001
From: Fernando Sahmkow <fsahmkow27@gmail.com>
Date: Sun, 7 Jan 2024 04:50:06 +0100
Subject: [PATCH] SMMU: Fix Right Shift UB.

---
 src/core/device_memory_manager.h   | 4 ++--
 src/core/device_memory_manager.inc | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/core/device_memory_manager.h b/src/core/device_memory_manager.h
index f9cb13a7a..cc9fd023f 100644
--- a/src/core/device_memory_manager.h
+++ b/src/core/device_memory_manager.h
@@ -62,13 +62,13 @@ public:
         DAddr subbits = static_cast<DAddr>(address & page_mask);
         const u32 base = compressed_device_addr[(address >> page_bits)];
         if ((base >> MULTI_FLAG_BITS) == 0) [[likely]] {
-            const DAddr d_address = static_cast<DAddr>(base << page_bits) + subbits;
+            const DAddr d_address = (static_cast<DAddr>(base) << page_bits) + subbits;
             operation(d_address);
             return;
         }
         InnerGatherDeviceAddresses(buffer, address);
         for (u32 value : buffer) {
-            operation(static_cast<DAddr>(value << page_bits) + subbits);
+            operation((static_cast<DAddr>(value) << page_bits) + subbits);
         }
     }
 
diff --git a/src/core/device_memory_manager.inc b/src/core/device_memory_manager.inc
index 5241293b6..d7b4abacc 100644
--- a/src/core/device_memory_manager.inc
+++ b/src/core/device_memory_manager.inc
@@ -301,7 +301,7 @@ template <typename Traits>
 u8* DeviceMemoryManager<Traits>::GetSpan(const DAddr src_addr, const std::size_t size) {
     size_t page_index = src_addr >> page_bits;
     size_t subbits = src_addr & page_mask;
-    if ((continuity_tracker[page_index] << page_bits) >= size + subbits) {
+    if ((static_cast<size_t>(continuity_tracker[page_index]) << page_bits) >= size + subbits) {
         return GetPointer<u8>(src_addr);
     }
     return nullptr;
@@ -311,7 +311,7 @@ template <typename Traits>
 const u8* DeviceMemoryManager<Traits>::GetSpan(const DAddr src_addr, const std::size_t size) const {
     size_t page_index = src_addr >> page_bits;
     size_t subbits = src_addr & page_mask;
-    if ((continuity_tracker[page_index] << page_bits) >= size + subbits) {
+    if ((static_cast<size_t>(continuity_tracker[page_index]) << page_bits) >= size + subbits) {
         return GetPointer<u8>(src_addr);
     }
     return nullptr;