diff --git a/src/xenia/kernel/shim_utils.h b/src/xenia/kernel/shim_utils.h
index d35f93813..81f26ffc9 100644
--- a/src/xenia/kernel/shim_utils.h
+++ b/src/xenia/kernel/shim_utils.h
@@ -34,8 +34,10 @@ namespace kernel {
 
 #define SHIM_MEM_16(a)        (uint16_t)XEGETUINT16BE(SHIM_MEM_ADDR(a));
 #define SHIM_MEM_32(a)        (uint32_t)XEGETUINT32BE(SHIM_MEM_ADDR(a));
+#define SHIM_MEM_64(a)        (uint64_t)XEGETUINT64BE(SHIM_MEM_ADDR(a));
 #define SHIM_SET_MEM_16(a, v) (*(uint16_t*)SHIM_MEM_ADDR(a)) = XESWAP16(v)
 #define SHIM_SET_MEM_32(a, v) (*(uint32_t*)SHIM_MEM_ADDR(a)) = XESWAP32(v)
+#define SHIM_SET_MEM_64(a, v) (*(uint64_t*)SHIM_MEM_ADDR(a)) = XESWAP64(v)
 
 #define SHIM_GPR_32(n)        (uint32_t)(ppc_state->r[n])
 #define SHIM_SET_GPR_32(n, v) ppc_state->r[n] = (uint64_t)((v) & UINT32_MAX)