39 lines
1.0 KiB
C++
39 lines
1.0 KiB
C++
/*
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* Copyright 2016 - 2019 gtalent2@gmail.com
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#include <ox/fs/fs.hpp>
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#include <ox/std/std.hpp>
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#include "addresses.hpp"
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#include "../media.hpp"
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namespace nostalgia::core {
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uint8_t *loadRom(const char*) {
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// put the header in the wrong order to prevent mistaking this code for the
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// media section
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constexpr auto headerP2 = "_HEADER_________";
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constexpr auto headerP1 = "NOSTALGIA_MEDIA";
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constexpr auto headerP1Len = 15;
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constexpr auto headerP2Len = 16;
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constexpr auto headerLen = headerP1Len + headerP2Len + 1;
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for (auto current = &MEM_ROM; current < ((uint8_t*) 0x0a000000); current += headerLen) {
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if (ox_memcmp(current, headerP1, headerP1Len) == 0 &&
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ox_memcmp(current + headerP1Len, headerP2, headerP2Len) == 0) {
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return current + headerLen;
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}
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}
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return nullptr;
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}
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void unloadRom(uint8_t*) {
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}
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}
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