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/*
dz80_2 is registered Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2007 <Jan Panteltje>
email: panteltje@yahoo.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* Modified by Tomaz Solc <tomaz.solc@tablix.org>, June 2007 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "dz80.h"
#include "symtab.h"
/*calculate destination addresses and store in hash table*/
int tosymtab(int *ia, unsigned int prc)
{
unsigned int argval;
enum referencetype argtyp;
/* FIXME: This duplicates decoding code in dz80.c. */
argtyp=0;
if((ia[0]==0x32) || (ia[0]==0x3a))
/* ld (nn),a */
/* ld a,(nn) */
{
argtyp=vrbyte;
argval=ia[1]+256*ia[2];
}
else if((ia[0]==0x22) || (ia[0]==0x2a))
/* ld (nn),hl */
/* ld hl,(nn) */
{
argtyp=vrword;
argval=ia[1]+256*ia[2];
}
else if(ia[0]==0xed)
{
if((ia[1]==0x43)||(ia[1]==0x4b)||(ia[1]==0x53)||(ia[1]==0x5b)\
||(ia[1]==0x73)||(ia[1]==0x7b))
/* ld (nn),bc */
/* ld bc,(nn) */
/* ld (nn),de */
/* ld de,(nn) */
/* ld (nn),sp */
/* ld sp,(nn) */
{
argtyp=vrword;
argval=ia[2]+256*ia[3];
}
}
else if((ia[0]==0xdd)||(ia[0]==0xfd))
{
if((ia[1]==0x22)||(ia[1]==0x2a))
/* ld (nn),ix */
/* ld ix,(nn) */
/* ld (nn),iy */
/* ld iy,(nn) */
{
argtyp=vrword;
argval=ia[2]+256*ia[3];
}
if(ia[1]==0x21)
/* ld ix,nn */
/* ld iy,nn */
{
argtyp=cstadd;
argval=ia[2]+256*ia[3];
}
}
else if((ia[0]==0xda)||(ia[0]==0xfa)||(ia[0]==0xd2)||(ia[0]==0xc3)\
||(ia[0]==0xc2)||(ia[0]==0xf2)||(ia[0]==0xea)||(ia[0]==0xe2)||(ia[0]==0xca))
{
/* jp */
argtyp=jpdest;
argval=ia[1]+256*ia[2];
}
else if((ia[0]==0x38)||(ia[0]==0x18)||(ia[0]==0x30)||(ia[0]==0x20)||(ia[0]==0x28))
{
/* jr */
argtyp=jrdest;
argval=prc+ia[1]+2;
if(ia[1]>=128)argval-=256;/*signbit*/
}
else if((ia[0]==0xdc)||(ia[0]==0xfc)||(ia[0]==0xd4)||(ia[0]==0xcd)||(ia[0]==0xc4)\
||(ia[0]==0xf4)||(ia[0]==0xf4)||(ia[0]==0xec)||(ia[0]==0xe4)||(ia[0]==0xcc))
/* call */
{
argtyp=cldest;
argval=ia[1]+256*ia[2];
}
else if((ia[0]==0x31)||(ia[0]==0x01)||(ia[0]==0x11)||(ia[0]==0x21))
{
/* ld rr,nn */
argtyp=cstadd;
argval=ia[1]+256*ia[2];
}
else if(ia[0]==0x10)
/* djnz */
{
argtyp=djdest;
argval=prc+ia[1]+2;
if(ia[1]>=128)argval-=256;
}
if(argtyp==undef) {
return 1;
} else {
symbol_newref(argval & 0xffff,prc,argtyp);
}
return(1);/*ok*/
}
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