Add option to disable SSE scanning

CMakeLists.txt

@@ -9,6 +9,7 @@ project(libhat)
 option(LIBHAT_STATIC_C_LIB "Build a static version of the C library" OFF)
 option(LIBHAT_SHARED_C_LIB "Build a shared version of the C library" OFF)
 option(LIBHAT_INSTALL_TARGET "Creates install rules for the libhat target" ON)
+option(LIBHAT_DISABLE_SSE "Disables SSE scanning" OFF)
 option(LIBHAT_DISABLE_AVX512 "Disables AVX512 scanning" OFF)
 option(LIBHAT_TESTING "Enable tests" OFF)
 
@@ -46,6 +47,7 @@ target_include_directories(libhat PUBLIC
 )
 
 target_compile_definitions(libhat PUBLIC
+    "$<$<BOOL:${LIBHAT_DISABLE_SSE}>:LIBHAT_DISABLE_SSE>"
     "$<$<BOOL:${LIBHAT_DISABLE_AVX512}>:LIBHAT_DISABLE_AVX512>"
 )
 

src/Scanner.cpp

@@ -47,9 +47,11 @@ namespace hat::detail {
                 return find_pattern<scan_mode::AVX2, alignment>(begin, end, signature);
             }
         }
+#if !defined(LIBHAT_DISABLE_SSE)
         if (ext.sse41) {
             return find_pattern<scan_mode::SSE, alignment>(begin, end, signature);
         }
+#endif
 #endif
         // If none of the vectorized implementations are available/supported, then fallback to scanning per-byte
         return find_pattern<scan_mode::Single, alignment>(begin, end, signature);

src/arch/x86/SSE.cpp

@@ -1,6 +1,6 @@
 #include <libhat/Defines.hpp>
 
-#ifdef LIBHAT_X86
+#if defined(LIBHAT_X86) && !defined(LIBHAT_DISABLE_SSE)
 
 #include <libhat/Scanner.hpp>