// Translates an Errno code into an exception.
// Throws an exception based on the given error code (usually taken from ANSI C's errno)
BaseException* Exception::FromErrno( const wxString& streamname, int errcode )
{
pxAssumeDev( errcode != 0, "Invalid NULL error code? (errno)" );
switch( errcode )
{
case EINVAL:
pxFailDev( L"Invalid argument" );
return &(new Exception::BadStream( streamname ))->SetDiagMsg(L"Invalid argument? (likely caused by an unforgivable programmer error!)" );
case EACCES: // Access denied!
return new Exception::AccessDenied( streamname );
case EMFILE: // Too many open files!
return &(new Exception::CannotCreateStream( streamname ))->SetDiagMsg(L"Too many open files"); // File handle allocation failure
case EEXIST:
return &(new Exception::CannotCreateStream( streamname ))->SetDiagMsg(L"File already exists");
case ENOENT: // File not found!
return new Exception::FileNotFound( streamname );
case EPIPE:
return &(new Exception::BadStream( streamname ))->SetDiagMsg(L"Broken pipe");
case EBADF:
return &(new Exception::BadStream( streamname ))->SetDiagMsg(L"Bad file number");
default:
return &(new Exception::BadStream( streamname ))->SetDiagMsg(pxsFmt( L"General file/stream error [errno: %d]", errcode ));
}
}
xAddressVoid& xAddressVoid::Add( const xAddressReg& src )
{
if( src == Index )
{
Factor++;
}
else if( src == Base )
{
// Compound the existing register reference into the Index/Scale pair.
Base = xEmptyReg;
if( src == Index )
Factor++;
else
{
pxAssertDev( Index.IsEmpty(), "x86Emitter: Only one scaled index register is allowed in an address modifier." );
Index = src;
Factor = 2;
}
}
else if( Base.IsEmpty() )
Base = src;
else if( Index.IsEmpty() )
Index = src;
else
pxAssumeDev( false, L"x86Emitter: address modifiers cannot have more than two index registers." ); // oops, only 2 regs allowed per ModRm!
return *this;
}
// This method allows the programmer to specify the block size of the array as a function
// of its reserved size. This function *must* be called *after* the reserve has been made,
// and *before* the array contents have been accessed.
//
// Calls to this function prior to initializing the reserve or after the reserve has been
// accessed (resulting in committed blocks) will be ignored -- and will generate an assertion
// in debug builds.
SpatialArrayReserve& SpatialArrayReserve::SetBlockCount( uint blocks )
{
pxAssumeDev( !m_pages_commited, "Invalid object state: SetBlockCount must be called prior to reserved memory accesses." );
// Calculate such that the last block extends past the end of the array, if necessary.
m_numblocks = blocks;
m_blocksize = (m_pages_reserved + m_numblocks-1) / m_numblocks;
return *this;
}
xAddressVoid &xAddressVoid::Add(const xAddressVoid &src)
{
Add(src.Base);
Add(src.Displacement);
// If the factor is 1, we can just treat index like a base register also.
if (src.Factor == 1) {
Add(src.Index);
} else if (Index.IsEmpty()) {
Index = src.Index;
Factor = src.Factor;
} else if (Index == src.Index) {
Factor += src.Factor;
} else
pxAssumeDev(false, L"x86Emitter: address modifiers cannot have more than two index registers."); // oops, only 2 regs allowed per ModRm!
return *this;
}
// Generates a 'reduced' ModSib form, which has valid Base, Index, and Scale values.
// Necessary because by default ModSib compounds registers into Index when possible.
//
// If the ModSib is in illegal form ([Base + Index*5] for example) then an assertion
// followed by an InvalidParameter Exception will be tossed around in haphazard
// fashion.
//
// Optimization Note: Currently VC does a piss poor job of inlining this, even though
// constant propagation *should* resove it to little or no code (VC's constprop fails
// on C++ class initializers). There is a work around [using array initializers instead]
// but it's too much trouble for code that isn't performance critical anyway.
// And, with luck, maybe VC10 will optimize it better and make it a non-issue. :D
//
void xIndirectVoid::Reduce()
{
if( Index.IsStackPointer() )
{
// esp cannot be encoded as the index, so move it to the Base, if possible.
// note: intentionally leave index assigned to esp also (generates correct
// encoding later, since ESP cannot be encoded 'alone')
pxAssert( Scale == 0 ); // esp can't have an index modifier!
pxAssert( Base.IsEmpty() ); // base must be empty or else!
Base = Index;
return;
}
// If no index reg, then load the base register into the index slot.
if( Index.IsEmpty() )
{
Index = Base;
Scale = 0;
if( !Base.IsStackPointer() ) // prevent ESP from being encoded 'alone'
Base = xEmptyReg;
return;
}
// The Scale has a series of valid forms, all shown here:
switch( Scale )
{
case 0: break;
case 1: Scale = 0; break;
case 2: Scale = 1; break;
case 3: // becomes [reg*2+reg]
pxAssertDev( Base.IsEmpty(), "Cannot scale an Index register by 3 when Base is not empty!" );
Base = Index;
Scale = 1;
break;
case 4: Scale = 2; break;
case 5: // becomes [reg*4+reg]
pxAssertDev( Base.IsEmpty(), "Cannot scale an Index register by 5 when Base is not empty!" );
Base = Index;
Scale = 2;
break;
case 6: // invalid!
pxAssumeDev( false, "x86 asm cannot scale a register by 6." );
break;
case 7: // so invalid!
pxAssumeDev( false, "x86 asm cannot scale a register by 7." );
break;
case 8: Scale = 3; break;
case 9: // becomes [reg*8+reg]
pxAssertDev( Base.IsEmpty(), "Cannot scale an Index register by 9 when Base is not empty!" );
Base = Index;
Scale = 3;
break;
jNO_DEFAULT
}
}
void SIO_CommandWrite(u8 value,int way) {
PAD_LOG("sio write8 %x", value);
// PAD COMMANDS
switch (sio.padst) {
case 1: SIO_INT();
if ((value&0x40) == 0x40) {
sio.padst = 2; sio.parp = 1;
switch (sio.CtrlReg&0x2002) {
case 0x0002:
sio.packetsize ++; // Total packet size sent
sio.buf[sio.parp] = PADpoll(value);
break;
case 0x2002:
sio.packetsize ++; // Total packet size sent
sio.buf[sio.parp] = PADpoll(value);
break;
}
if (!(sio.buf[sio.parp] & 0x0f)) {
sio.bufcount = 2 + 32;
} else {
sio.bufcount = 2 + (sio.buf[sio.parp] & 0x0f) * 2;
}
}
else sio.padst = 0;
return;
case 2:
sio.parp++;
switch (sio.CtrlReg&0x2002) {
case 0x0002: sio.packetsize ++; sio.buf[sio.parp] = PADpoll(value); break;
case 0x2002: sio.packetsize ++; sio.buf[sio.parp] = PADpoll(value); break;
}
if (sio.parp == sio.bufcount) { sio.padst = 0; return; }
SIO_INT();
return;
case 3:
// No pad connected.
sio.parp++;
if (sio.parp == sio.bufcount) { sio.padst = 0; return; }
SIO_INT();
return;
}
// MEMORY CARD COMMANDS
switch (sio.mcdst) {
case 1:
{
sio.packetsize++;
SIO_INT();
if (sio.rdwr) { sio.parp++; return; }
sio.parp = 1;
const char* log_cmdname = "";
switch (value) {
case 0x11: // RESET
log_cmdname = "Reset1";
sio.bufcount = 8;
memset8<0xff>(sio.buf);
sio.buf[3] = sio.terminator;
sio.buf[2] = '+';
sio.mcdst = 99;
sio2.packet.recvVal3 = 0x8c;
break;
// FIXME : Why are there two identical cases for resetting the
// memorycard(s)? there doesn't appear to be anything dealing with
// card slots here. --air
case 0x12: // RESET
log_cmdname = "Reset2";
sio.bufcount = 8;
memset8<0xff>(sio.buf);
sio.buf[3] = sio.terminator;
sio.buf[2] = '+';
sio.mcdst = 99;
sio2.packet.recvVal3 = 0x8c;
break;
case 0x81: // COMMIT
log_cmdname = "Commit";
sio.bufcount = 8;
memset8<0xff>(sio.buf);
sio.mcdst = 99;
sio.buf[3] = sio.terminator;
sio.buf[2] = '+';
sio2.packet.recvVal3 = 0x8c;
if(value == 0x81) {
if(sio.mc_command==0x42)
sio2.packet.recvVal1 = 0x1600; // Writing
else if(sio.mc_command==0x43) sio2.packet.recvVal1 = 0x1700; // Reading
}
break;
case 0x21:
case 0x22:
case 0x23: // SECTOR SET
log_cmdname = "SetSector";
sio.bufcount = 8; sio.mcdst = 99; sio.sector=0; sio.k=0;
memset8<0xff>(sio.buf);
sio2.packet.recvVal3 = 0x8c;
sio.buf[8]=sio.terminator;
sio.buf[7]='+';
break;
case 0x24: break;
case 0x25: break;
case 0x26:
{
log_cmdname = "GetInfo";
const uint port = sio.GetMemcardIndex();
const uint slot = sio.activeMemcardSlot[port];
mc_command_0x26_tag cmd = mc_sizeinfo_8mb;
PS2E_McdSizeInfo info;
info.SectorSize = cmd.sectorSize;
info.EraseBlockSizeInSectors = cmd.eraseBlocks;
info.McdSizeInSectors = cmd.mcdSizeInSectors;
SysPlugins.McdGetSizeInfo( port, slot, info );
pxAssumeDev( cmd.mcdSizeInSectors >= mc_sizeinfo_8mb.mcdSizeInSectors,
"Mcd plugin returned an invalid memorycard size: Cards smaller than 8MB are not supported." );
cmd.sectorSize = info.SectorSize;
cmd.eraseBlocks = info.EraseBlockSizeInSectors;
cmd.mcdSizeInSectors = info.McdSizeInSectors;
// Recalculate the xor summation
// This uses a trick of removing the known xor values for a default 8mb memorycard (for which the XOR
// was calculated), and replacing it with our new values.
apply_xor( cmd.mc_xor, mc_sizeinfo_8mb.sectorSize );
apply_xor( cmd.mc_xor, mc_sizeinfo_8mb.eraseBlocks );
apply_xor( cmd.mc_xor, mc_sizeinfo_8mb.mcdSizeInSectors );
apply_xor( cmd.mc_xor, cmd.sectorSize );
apply_xor( cmd.mc_xor, cmd.eraseBlocks );
apply_xor( cmd.mc_xor, cmd.mcdSizeInSectors );
sio.bufcount = 12; sio.mcdst = 99; sio2.packet.recvVal3 = 0x83;
memset8<0xff>(sio.buf);
memcpy_fast(&sio.buf[2], &cmd, sizeof(cmd));
sio.buf[12]=sio.terminator;
}
break;
case 0x27:
case 0x28:
case 0xBF:
log_cmdname = "NotSure"; // FIXME !!
sio.bufcount = 4; sio.mcdst = 99; sio2.packet.recvVal3 = 0x8b;
memset8<0xff>(sio.buf);
sio.buf[4]=sio.terminator;
sio.buf[3]='+';
break;
// FIXME ?
// sio.lastsector and sio.mode are unused.
case 0x42: // WRITE
log_cmdname = "Write";
//sio.mode = 0;
goto __doReadWrite;
case 0x43: // READ
log_cmdname = "Read";
//sio.lastsector = sio.sector; // Reading
goto __doReadWrite;
case 0x82:
log_cmdname = "Read(?)"; // FIXME !!
//if(sio.lastsector==sio.sector) sio.mode = 2;
__doReadWrite:
sio.bufcount =133; sio.mcdst = 99;
memset8<0xff>(sio.buf);
sio.buf[133]=sio.terminator;
sio.buf[132]='+';
break;
case 0xf0:
case 0xf1:
case 0xf2:
log_cmdname = "NoClue"; // FIXME !!
sio.mcdst = 99;
break;
case 0xf3:
case 0xf7:
log_cmdname = "NoClueHereEither"; // FIXME !!
sio.bufcount = 4; sio.mcdst = 99;
memset8<0xff>(sio.buf);
sio.buf[4]=sio.terminator;
sio.buf[3]='+';
break;
case 0x52:
log_cmdname = "FixMe"; // FIXME !!
sio.rdwr = 1; memset8<0xff>(sio.buf);
sio.buf[sio.bufcount]=sio.terminator; sio.buf[sio.bufcount-1]='+';
break;
case 0x57:
log_cmdname = "FixMe"; // FIXME !!
sio.rdwr = 2; memset8<0xff>(sio.buf);
sio.buf[sio.bufcount]=sio.terminator; sio.buf[sio.bufcount-1]='+';
break;
default:
log_cmdname = "Unknown";
sio.mcdst = 0;
memset8<0xff>(sio.buf);
sio.buf[sio.bufcount]=sio.terminator; sio.buf[sio.bufcount-1]='+';
}
MEMCARDS_LOG("MC(%d) command 0x%02X [%s]", sio.GetMemcardIndex()+1, value, log_cmdname);
sio.mc_command = value;
}
return; // END CASE 1.
// FURTHER PROCESSING OF THE MEMORY CARD COMMANDS
case 99:
{
sio.packetsize++;
sio.parp++;
switch(sio.mc_command)
{
// SET_ERASE_PAGE; the next erase commands will *clear* data starting with the page set here
case 0x21:
// SET_WRITE_PAGE; the next write commands will commit data starting with the page set here
case 0x22:
// SET_READ_PAGE; the next read commands will return data starting with the page set here
case 0x23:
if (sio.parp==2)sio.sector|=(value & 0xFF)<< 0;
if (sio.parp==3)sio.sector|=(value & 0xFF)<< 8;
if (sio.parp==4)sio.sector|=(value & 0xFF)<<16;
if (sio.parp==5)sio.sector|=(value & 0xFF)<<24;
if (sio.parp==6)
{
if (sio_xor((u8 *)&sio.sector, 4) == value)
MEMCARDS_LOG("MC(%d) SET PAGE sio.sector, sector=0x%04X", sio.GetMemcardIndex()+1, sio.sector);
else
MEMCARDS_LOG("MC(%d) SET PAGE XOR value ERROR 0x%02X != ^0x%02X",
sio.GetMemcardIndex()+1, value, sio_xor((u8 *)&sio.sector, 4));
}
break;
// SET_TERMINATOR; reads the new terminator code
case 0x27:
if(sio.parp==2) {
sio.terminator = value;
sio.buf[4] = value;
MEMCARDS_LOG("MC(%d) SET TERMINATOR command, value=0x%02X", sio.GetMemcardIndex()+1, value);
}
break;
// GET_TERMINATOR; puts in position 3 the current terminator code and in 4 the default one
// depending on the param
case 0x28:
if(sio.parp == 2) {
sio.buf[2] = '+';
sio.buf[3] = sio.terminator;
//if(value == 0) sio.buf[4] = 0xFF;
sio.buf[4] = 0x55;
MEMCARDS_LOG("MC(%d) GET TERMINATOR command, value=0x%02X", sio.GetMemcardIndex()+1, value);
}
break;
// WRITE DATA
case 0x42:
if (sio.parp==2) {
sio.bufcount=5+value;
memset8<0xff>(sio.buf);
sio.buf[sio.bufcount-1]='+';
sio.buf[sio.bufcount]=sio.terminator;
MEMCARDS_LOG("MC(%d) WRITE command, size=0x%02X", sio.GetMemcardIndex()+1, value);
}
else
if ((sio.parp>2) && (sio.parp<sio.bufcount-2)) {
sio.buf[sio.parp]=value;
//MEMCARDS_LOG("MC(%d) WRITING 0x%02X", sio.GetMemcardIndex()+1, value);
} else
if (sio.parp==sio.bufcount-2) {
if (sio_xor(&sio.buf[3], sio.bufcount-5)==value) {
_SaveMcd(&sio.buf[3], (512+16)*sio.sector+sio.k, sio.bufcount-5);
sio.buf[sio.bufcount-1]=value;
sio.k+=sio.bufcount-5;
} else {
MEMCARDS_LOG("MC(%d) write XOR value error 0x%02X != ^0x%02X",
sio.GetMemcardIndex()+1, value, sio_xor(&sio.buf[3], sio.bufcount-5));
}
}
break;
// READ DATA
case 0x43:
if (sio.parp==2)
{
//int i;
sio.bufcount=value+5;
sio.buf[3]='+';
MEMCARDS_LOG("MC(%d) READ command, size=0x%02X", sio.GetMemcardIndex()+1, value);
_ReadMcd(&sio.buf[4], (512+16)*sio.sector+sio.k, value);
/*if(sio.mode==2)
{
int j;
for(j=0; j < value; j++)
sio.buf[4+j] = ~sio.buf[4+j];
}*/
sio.k+=value;
sio.buf[sio.bufcount-1]=sio_xor(&sio.buf[4], value);
sio.buf[sio.bufcount]=sio.terminator;
}
break;
// INTERNAL ERASE
case 0x82:
if(sio.parp==2)
{
sio.buf[2]='+';
sio.buf[3]=sio.terminator;
//if (sio.k != 0 || (sio.sector & 0xf) != 0)
// Console.Warning("saving : odd position for erase.");
_EraseMCDBlock((512+16)*(sio.sector&~0xf));
/* memset(sio.buf, -1, 256);
_SaveMcd(sio.buf, (512+16)*sio.sector, 256);
_SaveMcd(sio.buf, (512+16)*sio.sector+256, 256);
_SaveMcd(sio.buf, (512+16)*sio.sector+512, 16);
sio.buf[2]='+';
sio.buf[3]=sio.terminator;*/
//sio.buf[sio.bufcount] = sio.terminator;
MEMCARDS_LOG("MC(%d) INTERNAL ERASE command 0x%02X", sio.GetMemcardIndex()+1, value);
}
break;
// CARD AUTHENTICATION CHECKS
case 0xF0:
if (sio.parp==2)
{
MEMCARDS_LOG("MC(%d) CARD AUTH :0x%02X", sio.GetMemcardIndex()+1, value);
switch(value){
case 1:
case 2:
case 4:
case 15:
case 17:
case 19:
sio.bufcount=13;
memset8<0xff>(sio.buf);
sio.buf[12] = 0; // Xor value of data from index 4 to 11
sio.buf[3]='+';
sio.buf[13] = sio.terminator;
break;
case 6:
case 7:
case 11:
sio.bufcount=13;
memset8<0xff>(sio.buf);
sio.buf[12]='+';
sio.buf[13] = sio.terminator;
break;
default:
sio.bufcount=4;
memset8<0xff>(sio.buf);
sio.buf[3]='+';
sio.buf[4] = sio.terminator;
}
}
break;
}
if (sio.bufcount<=sio.parp) sio.mcdst = 0;
}
return; // END CASE 99.
}
switch (sio.mtapst)
{
case 0x1:
sio.packetsize++;
sio.parp = 1;
SIO_INT();
switch(value) {
case 0x12:
// Query number of pads supported.
sio.buf[3] = 4;
sio.mtapst = 2;
sio.bufcount = 5;
break;
case 0x13:
// Query number of memcards supported.
sio.buf[3] = 4;
sio.mtapst = 2;
sio.bufcount = 5;
break;
case 0x21:
// Set pad slot.
sio.mtapst = value;
sio.bufcount = 6; // No idea why this is 6, saved from old code.
break;
case 0x22:
// Set memcard slot.
sio.mtapst = value;
sio.bufcount = 6; // No idea why this is 6, saved from old code.
break;
}
// Commented out values are from original code. They break multitap in bios.
sio.buf[sio.bufcount-1]=0;//'+';
sio.buf[sio.bufcount]=0;//'Z';
return;
case 0x2:
sio.packetsize++;
sio.parp++;
if (sio.bufcount<=sio.parp) sio.mcdst = 0;
SIO_INT();
return;
case 0x21:
// Set pad slot.
sio.packetsize++;
sio.parp++;
sio.mtapst = 2;
if (sio.CtrlReg & 2)
{
int port = sio.GetMultitapPort();
if (IsMtapPresent(port))
sio.activePadSlot[port] = value;
}
SIO_INT();
return;
case 0x22:
// Set memcard slot.
sio.packetsize++;
sio.parp++;
sio.mtapst = 2;
if (sio.CtrlReg & 2)
{
int port = sio.GetMultitapPort();
if (IsMtapPresent(port))
sio.activeMemcardSlot[port] = value;
}
SIO_INT();
return;
}
if(sio.count == 1 || way == 0) InitializeSIO(value);
}