public int read()
{
if (buffer_ptr < 4)
{
m_addr++;
return(buffer[buffer_ptr++]);
}
if (((m_addr & 0x3) == 0) && ((m_end - m_addr) > 3))
{
int i = CRunTime.memory[m_addr >> 2];
for (int j = 0; j < 4; j++)
{
int b = unchecked (i & 0xff);
buffer[3 - j] = b;
i = (unchecked (i >> 8));
}
buffer_ptr = 1;
m_addr++;
return(buffer[0]);
}
if (m_addr < m_end)
{
return(CRunTime.memoryReadByteUnsigned(m_addr++));
}
return(-1);
}
/* The nasty lwl/lwr and swl/swr instructions */
public static int memoryReadWordLeft(int address)
{
int b0 = CRunTime.memoryReadByteUnsigned(address + 3);
int b1 = CRunTime.memoryReadByteUnsigned(address + 2);
int b2 = CRunTime.memoryReadByteUnsigned(address + 1);
int b3 = CRunTime.memoryReadByteUnsigned(address + 0);
return(b0 | (b1 << 8) | (b2 << 16) | (b3 << 24));
}
