105 lines
3.2 KiB
C
105 lines
3.2 KiB
C
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/*
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* Copyright (c) 2019-2020 shchmue
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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ISC License
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hactool Copyright (c) 2018, SciresM
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _REMAP_STORAGE_H_
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#define _REMAP_STORAGE_H_
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#include "duplex_storage.h"
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#include "storage.h"
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#include <stdint.h>
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#define RMAP_ALIGN_SMALL 0x200
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#define RMAP_ALIGN_LARGE 0x4000
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typedef struct {
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uint32_t magic; /* RMAP */
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uint32_t version;
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uint32_t map_entry_count;
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uint32_t map_segment_count;
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uint32_t segment_bits;
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uint8_t _0x14[0x2C];
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} remap_header_t;
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typedef struct remap_segment_ctx_t remap_segment_ctx_t;
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typedef struct remap_entry_ctx_t remap_entry_ctx_t;
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typedef struct {
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uint64_t virtual_offset_end;
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uint64_t physical_offset_end;
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} remap_end_offsets_t;
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typedef struct {
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uint64_t virtual_offset;
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uint64_t physical_offset;
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uint64_t size;
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uint32_t alignment;
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uint32_t _0x1C;
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} remap_entry_t;
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struct remap_entry_ctx_t {
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remap_entry_t entry;
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remap_end_offsets_t ends;
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remap_segment_ctx_t *segment;
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remap_entry_ctx_t *next;
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};
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struct remap_segment_ctx_t{
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uint64_t offset;
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uint64_t length;
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remap_entry_ctx_t **entries;
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uint64_t entry_count;
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};
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typedef struct {
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remap_header_t *header;
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remap_entry_ctx_t *map_entries;
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remap_segment_ctx_t *segments;
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substorage base_storage;
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} remap_storage_ctx_t;
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static ALWAYS_INLINE uint32_t save_remap_get_segment_from_virtual_offset(remap_header_t *header, uint64_t offset) {
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return (uint32_t)(offset >> (64 - header->segment_bits));
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}
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static ALWAYS_INLINE uint64_t save_remap_get_virtual_offset(remap_header_t *header, uint64_t segment) {
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return segment << (64 - header->segment_bits);
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}
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remap_segment_ctx_t *save_remap_storage_init_segments(remap_storage_ctx_t *ctx);
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uint32_t save_remap_storage_read(remap_storage_ctx_t *ctx, void *buffer, uint64_t offset, uint64_t count);
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uint32_t save_remap_storage_write(remap_storage_ctx_t *ctx, const void *buffer, uint64_t offset, uint64_t count);
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#endif
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