Huge savedata driver refactor

bdk/libs/nx_savedata/journal_map.h

@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2019-2020 shchmue
+ *
+ * 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/>.
+ */
+
+/*
+ISC License
+
+hactool Copyright (c) 2018, SciresM
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#ifndef _JOURNAL_MAP_H_
+#define _JOURNAL_MAP_H_
+
+#include "storage.h"
+
+#include <utils/types.h>
+
+#include <stdint.h>
+
+#define JOURNAL_MAP_ENTRY_SIZE 8
+
+typedef struct {
+    uint32_t version;
+    uint32_t main_data_block_count;
+    uint32_t journal_block_count;
+    uint32_t _0x0C;
+} journal_map_header_t;
+
+typedef struct {
+    uint8_t *map_storage;
+    uint8_t *physical_block_bitmap;
+    uint8_t *virtual_block_bitmap;
+    uint8_t *free_block_bitmap;
+} journal_map_params_t;
+
+typedef struct {
+    uint32_t physical_index;
+    uint32_t virtual_index;
+} journal_map_entry_t;
+
+typedef struct {
+    journal_map_header_t *header;
+    journal_map_entry_t *entries;
+    uint8_t *map_storage;
+    uint8_t *modified_physical_blocks;
+    uint8_t *modified_virtual_blocks;
+    uint8_t *free_blocks;
+} journal_map_ctx_t;
+
+static ALWAYS_INLINE uint32_t save_journal_map_entry_make_physical_index(uint32_t index) {
+    return index | 0x80000000;
+}
+
+static ALWAYS_INLINE uint32_t save_journal_map_entry_get_physical_index(uint32_t index) {
+    return index & 0x7FFFFFFF;
+}
+
+void save_journal_map_init(journal_map_ctx_t *ctx, journal_map_header_t *header, journal_map_params_t *map_info);
+
+#endif