89 lines
2.3 KiB
C++
89 lines
2.3 KiB
C++
#include "stdafx.h"
|
|
#include "PifRamHandler.h"
|
|
#include <Project64-core\N64System\Mips\MemoryVirtualMem.h>
|
|
#include <Project64-core\N64System\SystemGlobals.h>
|
|
|
|
PifRamHandler::PifRamHandler(CMipsMemoryVM & MMU, CRegisters & Reg) :
|
|
m_MMU(MMU),
|
|
m_PifRam(MMU.PifRam()),
|
|
m_PC(Reg.m_PROGRAM_COUNTER)
|
|
{
|
|
}
|
|
|
|
bool PifRamHandler::Read32(uint32_t Address, uint32_t & Value)
|
|
{
|
|
Address &= 0x1FFFFFFF;
|
|
if (Address < 0x1FC007C0)
|
|
{
|
|
//Value = swap32by8(*(uint32_t *)(&PifRom[PAddr - 0x1FC00000]));
|
|
Value = 0;
|
|
if (HaveDebugger())
|
|
{
|
|
g_Notify->BreakPoint(__FILE__, __LINE__);
|
|
}
|
|
}
|
|
else if (Address < 0x1FC00800)
|
|
{
|
|
Value = *(uint32_t *)(&m_PifRam[Address - 0x1FC007C0]);
|
|
Value = swap32by8(Value);
|
|
}
|
|
else
|
|
{
|
|
Value = 0;
|
|
if (HaveDebugger())
|
|
{
|
|
g_Notify->BreakPoint(__FILE__, __LINE__);
|
|
}
|
|
}
|
|
|
|
if (GenerateLog() && LogPRDirectMemLoads() && Address >= 0x1FC007C0 && Address <= 0x1FC007FC)
|
|
{
|
|
LogMessage("%08X: read word from PIF RAM at 0x%X (%08X)", m_PC, Address - 0x1FC007C0, Value);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool PifRamHandler::Write32(uint32_t Address, uint32_t Value, uint32_t Mask)
|
|
{
|
|
Address &= 0x1FFFFFFF;
|
|
if (GenerateLog() && LogPRDirectMemStores() && Address >= 0x1FC007C0 && Address <= 0x1FC007FC)
|
|
{
|
|
LogMessage("%08X: Writing 0x%08X to PIF RAM at 0x%X", m_PC, Value, Address - 0x1FC007C0);
|
|
}
|
|
|
|
if (Address < 0x1FC007C0)
|
|
{
|
|
if (HaveDebugger())
|
|
{
|
|
g_Notify->BreakPoint(__FILE__, __LINE__);
|
|
}
|
|
}
|
|
else if (Address < 0x1FC00800)
|
|
{
|
|
uint32_t SwappedMask = swap32by8(Mask);
|
|
Value = ((*(uint32_t *)(&m_PifRam[Address - 0x1FC007C0])) & ~SwappedMask) | (Value & SwappedMask);
|
|
*(uint32_t *)(&m_PifRam[Address - 0x1FC007C0]) = Value;
|
|
if (Address == 0x1FC007FC)
|
|
{
|
|
m_MMU.PifRamWrite();
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
uint32_t PifRamHandler::swap32by8(uint32_t word)
|
|
{
|
|
const uint32_t swapped =
|
|
#if defined(_MSC_VER)
|
|
_byteswap_ulong(word)
|
|
#elif defined(__GNUC__)
|
|
__builtin_bswap32(word)
|
|
#else
|
|
(word & 0x000000FFul) << 24
|
|
| (word & 0x0000FF00ul) << 8
|
|
| (word & 0x00FF0000ul) >> 8
|
|
| (word & 0xFF000000ul) >> 24
|
|
#endif
|
|
;
|
|
return (swapped & 0xFFFFFFFFul);
|
|
} |