Fixing up license stuff.

src/xenia/kernel/xam_content.cc

@@ -25,15 +25,22 @@ namespace kernel {
 
 SHIM_CALL XamContentGetLicenseMask_shim(
     PPCContext* ppc_state, KernelState* state) {
-  uint32_t unk0_ptr = SHIM_GET_ARG_32(0);
-  uint32_t unk1_ptr = SHIM_GET_ARG_32(1);
+  uint32_t mask_ptr = SHIM_GET_ARG_32(0);
+  uint32_t overlapped_ptr = SHIM_GET_ARG_32(1);
 
   XELOGD(
       "XamContentGetLicenseMask(%.8X, %.8X)",
-      unk0_ptr,
-      unk1_ptr);
+      mask_ptr,
+      overlapped_ptr);
 
-  SHIM_SET_RETURN(X_STATUS_NOT_IMPLEMENTED);
+  XEASSERTZERO(overlapped_ptr);
+
+  // Arcade games seem to call this and check the result mask for random bits.
+  // If we fail, the games seem to use a hardcoded mask, which is likely trial.
+  // To be clever, let's just try setting all the bits.
+  SHIM_SET_MEM_32(mask_ptr, 0xFFFFFFFF);
+
+  SHIM_SET_RETURN(X_ERROR_SUCCESS);
 }