static USHORT ReadBuffer( void *dst, USHORT segv, ULONG offv, USHORT size )
{
USHORT length;
bool iugs;
USHORT resdata;
ULONG flat;
BYTE *data = dst;
if( segv < 4 ) {
return( 0 );
}
length = size;
if( Pid != 0 ) {
iugs = IsUnknownGDTSeg( segv );
if( !iugs ) {
flat = MakeItFlatNumberOne( segv, offv );
ReadLinear( data, flat, size );
if( Buff.Cmd == DBG_N_Success ) {
return( size );
}
}
while( length != 0 ) {
if( iugs || offv > KERNEL_MEM_OFFSET ) {
if( !TaskReadWord( segv, offv, &resdata ) ) {
break;
}
} else {
Buff.Cmd = DBG_C_ReadMem_D;
Buff.Addr = MakeItFlatNumberOne( segv, offv );
CallDosDebug(&Buff);
if( Buff.Cmd != DBG_N_Success ) {
break;
}
resdata = Buff.Value;
}
*data = resdata & 0xff;
data++;
offv++;
length--;
if( length != 0 ) {
*data = resdata >> 8;
data++;
offv++;
length--;
}
}
USHORT WriteBuffer( void *src, USHORT segv, ULONG offv, USHORT size )
{
USHORT length;
bool iugs;
USHORT resdata;
ULONG flat;
BYTE *data = src;
if( segv < 4 ) {
return( 0 );
}
length = size;
if( Pid != 0 ) {
iugs = IsUnknownGDTSeg( segv );
if( !iugs ) {
flat = MakeItFlatNumberOne( segv, offv );
WriteLinear( data, flat, size );
if( Buff.Cmd == DBG_N_Success ) {
return( size );
}
}
while( length != 0 ) {
Buff.Cmd = DBG_C_WriteMem_D;
if( length == 1 ) {
/* Don't want to write anything in the kernel area - that means no breakpoints! */
if( iugs /*|| offv > KERNEL_MEM_OFFSET*/ ) {
if( !TaskReadWord( segv, offv, &resdata ) ) {
break;
}
resdata &= 0xff00;
resdata |= *data;
if( !TaskWriteWord( segv, offv, resdata ) ) {
break;
}
} else {
Buff.Cmd = DBG_C_ReadMem_D;
Buff.Addr = MakeItFlatNumberOne( segv, offv );
CallDosDebug( &Buff );
Buff.Cmd = DBG_C_WriteMem_D;
Buff.Addr = MakeItFlatNumberOne( segv, offv );
Buff.Value &= 0xff00;
Buff.Value |= *data;
CallDosDebug( &Buff );
if( Buff.Cmd != DBG_N_Success ) {
break;
}
}
data++;
length--;
offv++;
} else {
resdata = *data;
data++;
resdata |= *data << 8;
data++;
if( iugs ) {
if( !TaskWriteWord( segv, offv, resdata ) ) {
break;
}
} else {
Buff.Value = resdata;
Buff.Addr = MakeItFlatNumberOne( segv, offv );
CallDosDebug( &Buff );
if( Buff.Cmd != DBG_N_Success ) {
break;
}
}
length -= 2;
offv += 2;
}
}
}
return( size - length ); /* return amount written */
}
USHORT WriteBuffer( byte __far *data, USHORT segv, ULONG offv, USHORT size )
{
USHORT length;
bool iugs;
USHORT resdata;
ULONG flat;
if( segv < 4 ) {
return( 0 );
}
length = size;
if( Pid != 0 ) {
iugs = IsUnknownGDTSeg( segv );
if( !iugs ) {
flat = MakeItFlatNumberOne( segv, offv );
WriteLinear( data, flat, size );
if( Buff.Cmd == DBG_N_Success ) {
return( size );
}
}
while( length != 0 ) {
Buff.Cmd = DBG_C_WriteMem_D;
if( length == 1 ) {
if( iugs ) {
if( !TaskReadWord( segv, offv, &resdata ) ) {
break;
}
resdata &= 0xff00;
resdata |= *data;
if( !TaskWriteWord( segv, offv, resdata ) ) {
break;
}
} else {
Buff.Cmd = DBG_C_ReadMem_D;
Buff.Addr = MakeItFlatNumberOne( segv, offv );
CallDosDebug( &Buff );
Buff.Cmd = DBG_C_WriteMem_D;
Buff.Addr = MakeItFlatNumberOne( segv, offv );
Buff.Value &= 0xff00;
Buff.Value |= *data;
CallDosDebug( &Buff );
if( Buff.Cmd != DBG_N_Success ) {
break;
}
}
data++;
length--;
offv++;
} else {
resdata = *data;
data++;
resdata |= *data << 8;
data++;
if( iugs ) {
if( !TaskWriteWord( segv, offv, resdata ) ) {
break;
}
} else {
Buff.Value = resdata;
Buff.Addr = MakeItFlatNumberOne( segv, offv );
CallDosDebug( &Buff );
if( Buff.Cmd != DBG_N_Success ) {
break;
}
}
length -= 2;
offv += 2;
}
}
}
return( size - length ); /* return amount written */
}