Add debug menu entry to inject Celebi (WIP)

source/Gen3CartridgeSaveReader.cpp

@@ -0,0 +1,123 @@
+#include "Gen3CartridgeSaveReader.h"
+#include "libraries/Pokemon-Gen3-to-Gen-X/include/save.h"
+#include "flash_mem.h"
+#include <cstring>
+
+#define HALL_OF_FAME 0x01C000
+
+Gen3CartridgeSaveReader::Gen3CartridgeSaveReader(u8 *sector_buffer)
+    : sector_start_(0)
+    , sector_buffer_(sector_buffer)
+    , cur_(sector_buffer)
+    , dirty_(false)
+{
+}
+
+Gen3CartridgeSaveReader::~Gen3CartridgeSaveReader()
+{
+}
+
+void Gen3CartridgeSaveReader::read(u8 *buffer, u32 size)
+{
+    memcpy(buffer, cur_, size);
+    cur_ += size;
+}
+
+void Gen3CartridgeSaveReader::readUint8(u8& outByte)
+{
+    outByte = *cur_;
+    ++cur_;
+}
+
+void Gen3CartridgeSaveReader::readUint16(u16& outWord, Endianness fieldEndianness)
+{
+    // Right now we only support little endian (no need for big endian thus far)
+    outWord = *((u16*)cur_);
+    cur_ += sizeof(u16);
+}
+
+void Gen3CartridgeSaveReader::readUint32(u32& outDWord, Endianness fieldEndianness)
+{
+    // Right now we only support little endian (no need for big endian thus far)
+    outDWord = *((u32*)cur_);
+    cur_ += sizeof(u32);
+}
+
+void Gen3CartridgeSaveReader::write(const u8 *buffer, u32 size)
+{
+    memcpy(cur_, buffer, size);
+    cur_ += size;
+    dirty_ = true;
+
+}
+
+void Gen3CartridgeSaveReader::writeUint8(u8 value)
+{
+    *cur_ = value;
+    ++cur_;
+    dirty_ = true;
+}
+
+void Gen3CartridgeSaveReader::writeUint16(u16 value, Endianness fieldEndianness)
+{
+    // Right now we only support little endian (no need for big endian thus far)
+    *((u16*)cur_) = value;
+    cur_ += sizeof(u16);
+    dirty_ = true;
+}
+
+void Gen3CartridgeSaveReader::writeUint32(u32 value, Endianness fieldEndianness)
+{
+    // Right now we only support little endian (no need for big endian thus far)
+    *((u32*)cur_) = value;
+    cur_ += sizeof(u32);
+    dirty_ = true;
+}
+
+void Gen3CartridgeSaveReader::seek(u32 offset)
+{
+    const uintptr_t sector_start = offset / SECTOR_SIZE;
+    if(sector_start != sector_start_)
+    {
+        // write any pending changes.
+        flush();
+        sector_start_ = sector_start;
+        copy_save_to_ram(sector_start, sector_buffer_, SECTOR_SIZE);
+    }
+
+    cur_ = sector_buffer_ + (offset - sector_start);
+}
+
+void Gen3CartridgeSaveReader::advance(u32 numBytes)
+{
+    u8 *sector_end = sector_buffer_ + SECTOR_SIZE;
+    cur_ += numBytes;
+    if (cur_ > sector_end)
+    {
+        cur_ = sector_end;
+    }
+}
+
+void Gen3CartridgeSaveReader::rewind(u32 numBytes)
+{
+    if(static_cast<uintptr_t>(cur_ - sector_buffer_) >= numBytes)
+    {
+        cur_ -= numBytes;
+    }
+    else
+    {
+        cur_ = sector_buffer_;
+    }
+}
+
+void Gen3CartridgeSaveReader::flush()
+{
+    if(!dirty_)
+    {
+        return;
+    }
+
+    update_memory_buffer_checksum(sector_buffer_, (sector_start_ == HALL_OF_FAME));
+    copy_ram_to_save(sector_buffer_, sector_start_, SECTOR_SIZE);
+    dirty_ = false;
+}