2 files changed, 15 insertions, 1 deletions

diff --git a/src/common/address_space.inc b/src/common/address_space.inc
index 2195dabd5..c97dc8651 100644
--- a/src/common/address_space.inc
+++ b/src/common/address_space.inc
@@ -72,7 +72,7 @@ MAP_MEMBER(void)::MapLocked(VaType virt, PaType phys, VaType size, ExtraBlockInf
                 }
             }()};
 
-            if (block_end_predecessor->virt >= virt) {
+            if (block_end_predecessor != blocks.begin() && block_end_predecessor->virt >= virt) {
                 // If this block's start would be overlapped by the map then reuse it as a tail
                 // block
                 block_end_predecessor->virt = virt_end;
diff --git a/src/common/vector_math.h b/src/common/vector_math.h
index 0e2095c45..b4885835d 100644
--- a/src/common/vector_math.h
+++ b/src/common/vector_math.h
@@ -259,6 +259,20 @@ public:
         return *this;
     }
 
+    void RotateFromOrigin(float roll, float pitch, float yaw) {
+        float temp = y;
+        y = std::cos(roll) * y - std::sin(roll) * z;
+        z = std::sin(roll) * temp + std::cos(roll) * z;
+
+        temp = x;
+        x = std::cos(pitch) * x + std::sin(pitch) * z;
+        z = -std::sin(pitch) * temp + std::cos(pitch) * z;
+
+        temp = x;
+        x = std::cos(yaw) * x - std::sin(yaw) * y;
+        y = std::sin(yaw) * temp + std::cos(yaw) * y;
+    }
+
     [[nodiscard]] constexpr T Length2() const {
         return x * x + y * y + z * z;
     }