// this is same as above but, reads the same data from a binary format. this is for
// performance reasons to try and stream the data live from BSNES
public void ImportTraceLogLineBinary(byte[] bytes, bool abridgedFormat = true)
{
// extremely performance-intensive function. be really careful when adding stuff
if (abridgedFormat)
{
Debug.Assert(bytes.Length == 8);
}
else
{
Debug.Assert(bytes.Length == 21);
}
var pointer = 0;
// -----------------------------
var snesAddress = ByteUtil.ByteArrayToInt24(bytes, pointer);
pointer += 3;
var opcodeLen = bytes[pointer++];
var directPage = ByteUtil.ByteArrayToInt16(bytes, pointer);
pointer += 2;
var dataBank = bytes[pointer++];
// the flags register
var flags = bytes[pointer++];
// n = flags & 0x80;
// v = flags & 0x40;
// m = flags & 0x20;
// d = flags & 0x08;
// i = flags & 0x04;
// z = flags & 0x02;
// c = flags & 0x01;
// we only care about X and M flags
var xflagSet = (flags & 0x10) != 0;
var mflagSet = (flags & 0x20) != 0;
if (!abridgedFormat)
{
// skip opcodes. NOTE: must read all 5 bytes but only use up to 'opcode_len' bytes
//var op = bytes[pointer++];
//var op0 = bytes[pointer++];
//var op1 = bytes[pointer++];
//var op2 = bytes[pointer++];
pointer += 4;
// skip A register
pointer += 2;
// skip X register
pointer += 2;
// skip Y register
pointer += 2;
// skip S register
pointer += 2;
// skip, flag 'e' for emulation mode or not
// skip E(emu) flag <-- NOTE: we might... want this someday.
pointer += 1;
}
Debug.Assert(pointer == bytes.Length);
SetOpcodeAndOperandsFromTraceData(snesAddress, dataBank, directPage, xflagSet, mflagSet, opcodeLen);
}
private static void ParseBinary(byte[] bytes, bool abridgedFormat, out byte opcodeLen, ModificationData modData)
{
// file format info from the BSNES side:
// https://github.com/binary1230/bsnes-plus/blob/e30dfc784f3c40c0db0a09124db4ec83189c575c/bsnes/snes/cpu/core/disassembler/disassembler.cpp#L224
// extremely performance-intensive function. be really careful when adding stuff
if (abridgedFormat)
{
if (bytes.Length != 8)
{
throw new InvalidDataException("Non-abridged trace data length must be 8 bytes");
}
}
else
{
if (bytes.Length != 21)
{
throw new InvalidDataException("Non-abridged trace data length must be 21 bytes");
}
}
var currentIndex = 0;
// -----------------------------
modData.SnesAddress = ByteUtil.ByteArrayToInt24(bytes, currentIndex);
currentIndex += 3;
opcodeLen = bytes[currentIndex++];
modData.DirectPage = ByteUtil.ByteArrayToInt16(bytes, currentIndex);
currentIndex += 2;
modData.DataBank = bytes[currentIndex++];
// the flags register
var flags = bytes[currentIndex++];
// n = flags & 0x80;
// v = flags & 0x40;
// m = flags & 0x20;
// d = flags & 0x08;
// i = flags & 0x04;
// z = flags & 0x02;
// c = flags & 0x01;
// we only care about X and M flags
modData.XFlagSet = (flags & 0x10) != 0;
modData.MFlagSet = (flags & 0x20) != 0;
if (!abridgedFormat)
{
// skip opcodes. NOTE: must read all 5 bytes but only use up to 'opcode_len' bytes
//var op = bytes[currentIndex++];
//var op0 = bytes[currentIndex++];
//var op1 = bytes[currentIndex++];
//var op2 = bytes[currentIndex++];
currentIndex += 4;
// skip A register
currentIndex += 2;
// skip X register
currentIndex += 2;
// skip Y register
currentIndex += 2;
// skip S register
currentIndex += 2;
// skip, flag 'e' for emulation mode or not
// skip E(emu) flag <-- NOTE: we might... want this someday.
currentIndex += 1;
}
Debug.Assert(currentIndex == bytes.Length);
}