qemu/target_info: Add target_base_arm() helper

Add a helper to check whether the target base architecture
is ARM (either 32-bit or 64-bit).

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Acked-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20251021210144.58108-3-philmd@linaro.org>

target-info.c

@@ -53,6 +53,17 @@ bool target_big_endian(void)
     return target_endian_mode() == ENDIAN_MODE_BIG;
 }
 
+bool target_base_arm(void)
+{
+    switch (target_arch()) {
+    case SYS_EMU_TARGET_ARM:
+    case SYS_EMU_TARGET_AARCH64:
+        return true;
+    default:
+        return false;
+    }
+}
+
 bool target_arm(void)
 {
     return target_arch() == SYS_EMU_TARGET_ARM;