loader: completely rewrite.

stratosphere/loader/source/ldr_arguments.cpp

@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2018-2019 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "ldr_arguments.hpp"
+
+namespace sts::ldr::args {
+
+    namespace {
+
+        /* Convenience definitions. */
+        constexpr ncm::TitleId FreeTitleId = {};
+        constexpr size_t MaxArgumentInfos = 10;
+
+        /* Global storage. */
+        ArgumentInfo g_argument_infos[MaxArgumentInfos];
+
+        /* Helpers. */
+        ArgumentInfo *GetArgumentInfo(ncm::TitleId title_id) {
+            for (size_t i = 0; i < MaxArgumentInfos; i++) {
+                if (g_argument_infos[i].title_id == title_id) {
+                    return &g_argument_infos[i];
+                }
+            }
+            return nullptr;
+        }
+
+        ArgumentInfo *GetFreeArgumentInfo() {
+            return GetArgumentInfo(FreeTitleId);
+        }
+
+    }
+
+    /* API. */
+    const ArgumentInfo *Get(ncm::TitleId title_id) {
+        return GetArgumentInfo(title_id);
+    }
+
+    Result Set(ncm::TitleId title_id, const void *args, size_t args_size) {
+        if (args_size >= ArgumentSizeMax) {
+            return ResultLoaderTooLongArgument;
+        }
+
+        ArgumentInfo *arg_info = GetArgumentInfo(title_id);
+        if (arg_info == nullptr) {
+            arg_info = GetFreeArgumentInfo();
+        }
+        if (arg_info == nullptr) {
+            return ResultLoaderTooManyArguments;
+        }
+
+        arg_info->title_id = title_id;
+        arg_info->args_size = args_size;
+        std::memcpy(arg_info->args, args, args_size);
+        return ResultSuccess;
+    }
+
+    Result Clear() {
+        for (size_t i = 0; i < MaxArgumentInfos; i++) {
+            g_argument_infos[i].title_id = FreeTitleId;
+        }
+        return ResultSuccess;
+    }
+
+}