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// Copyright 2013 Dolphin Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include "Common/FileUtil.h"
#include "Core/Boot/Boot.h"
#include "Core/Boot/Boot_ELF.h"
#include "Core/Boot/ElfReader.h"
#include "Core/HLE/HLE.h"
#include "Core/PowerPC/PowerPC.h"
bool CBoot::IsElfWii(const std::string& filename)
{
/* We already check if filename existed before we called this function, so
there is no need for another check, just read the file right away */
const u64 filesize = File::GetSize(filename);
u8 *const mem = new u8[(size_t)filesize];
{
File::IOFile f(filename, "rb");
f.ReadBytes(mem, (size_t)filesize);
}
// Use the same method as the DOL loader uses: search for mfspr from HID4,
// which should only be used in Wii ELFs.
//
// Likely to have some false positives/negatives, patches implementing a
// better heuristic are welcome.
u32 HID4_pattern = 0x7c13fba6;
u32 HID4_mask = 0xfc1fffff;
ElfReader reader(mem);
bool isWii = false;
for (int i = 0; i < reader.GetNumSections(); ++i)
{
if (reader.IsCodeSection(i))
{
for (unsigned int j = 0; j < reader.GetSectionSize(i) / sizeof (u32); ++j)
{
u32 word = Common::swap32(((u32*)reader.GetSectionDataPtr(i))[j]);
if ((word & HID4_mask) == HID4_pattern)
{
isWii = true;
break;
}
}
}
}
delete[] mem;
return isWii;
}
bool CBoot::Boot_ELF(const std::string& filename)
{
const u64 filesize = File::GetSize(filename);
u8 *mem = new u8[(size_t)filesize];
{
File::IOFile f(filename, "rb");
f.ReadBytes(mem, (size_t)filesize);
}
ElfReader reader(mem);
reader.LoadInto(0x80000000);
if (!reader.LoadSymbols())
{
if (LoadMapFromFilename())
HLE::PatchFunctions();
}
else
{
HLE::PatchFunctions();
}
PC = reader.GetEntryPoint();
delete[] mem;
return true;
}
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