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xat.c
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xat.c
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/* xa65 - 65xx/65816 cross-assembler and utility suite
*
* Copyright (C) 1989-1997 André Fachat (a.fachat@physik.tu-chemnitz.de)
* maintained by Cameron Kaiser
*
* Core tokenizing module/pass 1 and pass 2
*
* 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.
*/
/* enable this to turn on (copious) optimization output */
/*
#define DEBUG_AM
*/
#include <ctype.h>
#include <stdio.h>
#include "xad.h"
#include "xah.h"
#include "xah2.h"
#include "xar.h"
#include "xa.h"
#include "xaa.h"
#include "xal.h"
#include "xat.h"
#include "xao.h"
#include "xap.h"
#include "xacharset.h"
int dsb_len = 0;
static int t_conv(signed char*,signed char*,int*,int,int*,int*,int*,int,int*);
static int t_keyword(signed char*,int*,int*);
static int tg_asc(signed char*,signed char*,int*,int*,int*,int*,int);
static void tg_dez(signed char*,int*,int*);
static void tg_hex(signed char*,int*,int*);
static void tg_oct(signed char*,int*,int*);
static void tg_bin(signed char*,int*,int*);
/* assembly mnemonics and pseudo-op tokens */
/* ina and dea don't work yet */
static char *kt[] ={
/* 1 2 3 4 5 6 7 8 9 10 */
"adc","and","asl","bbr","bbs","bcc","bcs","beq","bit","bmi",
"bne","bpl","bra","brk","bvc","bvs","brl","clc","cld","cli",
/*
"clv","cmp","cpx","cpy","cop","dea","dec","dex","dey","eor",
*/
"clv","cmp","cpx","cpy","cop",/*"dea",*/"dec","dex","dey","eor",
/*
"ina","inc","inx","iny","jmp","jsr","lda","ldx","ldy","lsr",
*/
/*"ina",*/"inc","inx","iny","jmp","jsr","lda","ldx","ldy","lsr",
"mvp","mvn","nop","ora","pha","php","phx","phy","pla","plp",
"plx","ply","phb","phd","phk","plb","pld","pea","pei","per",
"rmb","rol","ror","rti","rts","rep","rtl","sbc","sec","sed",
"sei","smb","sta","stx","sty","stz","sep","stp","tax","tay",
"trb","tsb","tsx","txa","txs","tya","txy","tyx","tcd","tdc",
"tcs","tsc","wai","wdb","xba","xce",
".byt",".word",".asc",".dsb", ".(", ".)", "*=", ".text",".data",".bss",
".zero",".fopt", ".byte", ".end", ".list", ".xlist", ".dupb", ".blkb", ".db", ".dw",
".align",".block", ".bend",".al",".as",".xl",".xs", ".bin", ".aasc"
};
static int lp[]= { 0,1,1,1,1,2,2,1,1,1,2,2,2,1,1,1,2,2 };
/* mvn and mvp are handled specially, they have a weird syntax */
#define Kmvp 38
#define Kmvn Kmvp+1
/* index into token array for pseudo-ops */
/* last valid mnemonic */
#define Lastbef 93
/* last valid token+1 */
#define Anzkey 123
#define Kbyt Lastbef+1
#define Kword Lastbef+2
#define Kasc Lastbef+3
#define Kdsb Lastbef+4
#define Kopen Lastbef+5 /* .( */
#define Kclose Lastbef+6 /* .) */
#define Kpcdef Lastbef+7 /* *=value */
#define Ktext Lastbef+8
#define Kdata Lastbef+9
#define Kbss Lastbef+10
#define Kzero Lastbef+11
#define Kfopt Lastbef+12
#define Kbyte Lastbef+13 /* gets remapped to Kbyt */
#define Kend Lastbef+14 /* ignored (MASM compat.) */
#define Klist Lastbef+15 /* ignored (MASM compat.) */
#define Kxlist Lastbef+16 /* ignored (MASM compat.) */
#define Kdupb Lastbef+17 /* gets remapped to Kdsb */
#define Kblkb Lastbef+18 /* gets remapped to Kdsb */
#define Kdb Lastbef+19 /* gets remapped to Kbyt */
#define Kdw Lastbef+20 /* gets remapped to Kword */
#define Kalign Lastbef+21
#define Kblock Lastbef+22 /* gets remapped to .( */
#define Kbend Lastbef+23 /* gets remapped to .) */
#define Kalong Lastbef+24
#define Kashort Lastbef+25
#define Kxlong Lastbef+26
#define Kxshort Lastbef+27
#define Kbin Lastbef+28
#define Kaasc Lastbef+29
#define Kreloc Anzkey /* *= (relocation mode) */
#define Ksegment Anzkey+1
/* array used for hashing tokens (26 entries, a-z) */
static int ktp[]={ 0,3,17,25,28,29,29,29,29,32,34,34,38,40,41,42,58,
58,65,76,90,90,90,92,94,94,94,Anzkey };
#define Admodes 24
/*
* opcodes for each addressing mode
* high byte: supported architecture (no bits = original NMOS 6502)
* bit 1: R65C02
* bit 2: 65816
* bit 3: 65816 and allows 16-bit quantity (immediate only)
* low byte: opcode itself
*
* each opcode is indexed in this order: *=65816, ^=R65C02
* 00 = implied
* 01 = zero page
* 02 = zero page,x
* 03 = direct page,y*
* 04 = direct page (indirect)*
* 05 = (indirect,x)
* 06 = (indirect),y
* 07 = immediate (8-bit)
* 08 = absolute
* 09 = absolute,x
* 10 = absolute,y
* 11 = relative
* 12 = (indirect-16) i.e., jmp (some_vector)
* 13 = (absolute,x)*
* 14 = zero page+relative test'n'branch ^
* 15 = zero page clear'n'set'bit ^
* 16 = relative long*
* 17 = absolute long*
* 18 = absolute long,x*
* 19 = stack relative*
* 20 = stack relative (indirect),y*
* 21 = direct page (indirect long)*
* 22 = direct page (indirect long),y*
* 23 = (indirect long)
*/
static int ct[Lastbef+1][Admodes] ={
/* 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 imm */
{ -1, 0x65,0x75,-1,0x172,0x61,0x71,0x469,0x6d,0x7d,0x79,-1, -1, -1, -1, -1, -1,0x26f,0x27f,0x263,0x273,0x267,0x277,-1 }, /*adc*/
{ -1, 0x25,0x35,-1,0x132,0x21,0x31,0x429,0x2d,0x3d,0x39,-1, -1, -1, -1, -1, -1,0x22f,0x23f,0x223,0x233,0x227,0x237,-1 }, /*and*/
{ 0x0a,0x06,0x16,-1, -1, -1, -1, -1, 0x0e,0x1e,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*asl*/
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0x10f,-1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*bbr*/
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0x18f,-1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*bbs*/
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0x90,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*bcc*/
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0xb0,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*bcs*/
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0xf0,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*beq*/
{ -1, 0x24,0x134,-1, -1, -1, -1, 0x589,0x2c,0x13c,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*bit*/
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0x30,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*bmi*/
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0xd0,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*bne*/
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0x10,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*bpl*/
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0x180,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*bra*/
{ 0x00,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*brk*/
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0x50,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*bvc*/
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0x70,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*bvs*/
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,0x282, -1, -1, -1, -1, -1, -1, -1 }, /*brl*/
{ 0x18,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*clc*/
{ 0xd8,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*cld*/
{ 0x58,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*cli*/
{ 0xb8,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*clv*/
{ -1, 0xc5,0xd5,-1, 0x1d2,0xc1,0xd1,0x4c9,0xcd,0xdd,0xd9,-1, -1, -1, -1, -1,-1,0x2cf,0x2df,0x2c3,0x2d3,0x2c7,0x2d7,-1 }, /*cmp*/
{ -1, 0xe4,-1, -1, -1, -1, -1, 0x8e0,0xec,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*cpx*/
{ -1, 0xc4,-1, -1, -1, -1, -1, 0x8c0,0xcc,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*cpy*/
{ -1, -1, -1, -1, -1, -1, -1, 0x202,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*cop*/
/*
{ 0x13a,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },*/ /*dea*/
{ 0x13a,0xc6,0xd6,-1, -1, -1, -1, -1, 0xce,0xde,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*dec*/
{ 0xca,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*dex*/
{ 0x88,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*dey*/
{ -1, 0x45,0x55,-1, 0x152,0x41,0x51,0x449,0x4d,0x5d,0x59,-1, -1, -1, -1, -1,-1,0x24f,0x25f,0x243,0x253,0x247,0x257,-1 }, /*eor*/
/*
{ 0x11a,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },*/ /*ina*/
{ 0x11a,0xe6,0xf6,-1, -1, -1, -1, -1, 0xee,0xfe,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*inc*/
{ 0xe8,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*inx*/
{ 0xc8,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*iny*/
{ -1, -1, -1, -1, -1, -1, -1, -1, 0x4c,-1, -1, -1, 0x6c,0x17c,-1, -1, -1,0x25c, -1, -1, -1, -1, -1,0x2dc}, /*jmp*/
{ -1, -1, -1, -1, -1, -1, -1, -1, 0x20,-1, -1, -1, -1, 0x2fc,-1, -1, -1,0x222, -1, -1, -1, -1, -1, -1 }, /*jsr*/
{ -1, 0xa5,0xb5,-1, 0x1b2,0xa1,0xb1,0x4a9,0xad,0xbd,0xb9,-1, -1, -1, -1, -1,-1,0x2af,0x2bf,0x2a3,0x2b3,0x2a7,0x2b7,-1 }, /*lda*/
{ -1, 0xa6,-1, 0xb6,-1, -1, -1, 0x8a2,0xae,-1, 0xbe,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*ldx*/
{ -1, 0xa4,0xb4,-1, -1, -1, -1, 0x8a0,0xac,0xbc,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*ldy*/
{ 0x4a,0x46,0x56,-1, -1, -1, -1, -1, 0x4e,0x5e,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*lsr*/
{ -1, -1, -1, -1, -1, -1, -1, -1, 0x244,-1, -1, -1 ,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*mvp*/
{ -1, -1, -1, -1, -1, -1, -1, -1, 0x254,-1, -1, -1 ,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*mvn*/
{ 0xea,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*nop*/
{ -1, 0x05,0x15,-1, 0x112,0x01,0x11,0x409,0x0d,0x1d,0x19,-1, -1, -1, -1, -1,-1,0x20f,0x21f,0x203,0x213,0x207,0x217,-1 }, /*ora*/
{ 0x48,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*pha*/
{ 0x08,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*php*/
{ 0x1da,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*phx*/
{ 0x15a,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*phy*/
{ 0x68,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*pla*/
{ 0x28,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*plp*/
{ 0x1fa,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*plx*/
{ 0x17a,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*ply*/
{ 0x28b,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 ,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*phb*/
{ 0x20b,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 ,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*phd*/
{ 0x24b,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 ,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*phk*/
{ 0x2ab,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 ,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*plb*/
{ 0x22b,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 ,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*pld*/
{ -1, -1, -1, -1, -1, -1, -1, -1, 0x2f4,-1, -1, -1 ,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*pea*/
{ -1, -1, -1, -1,0x2d4, -1, -1, -1, -1, -1, -1, -1 ,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*pei*/
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 ,-1, -1, -1, -1, 0x262,-1, -1, -1, -1, -1, -1, -1 }, /*per*/
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,0x107, -1, -1, -1, -1, -1, -1, -1, -1 }, /*rmb*/
{ 0x2a,0x26,0x36,-1, -1, -1, -1, -1, 0x2e,0x3e,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*rol*/
{ 0x6a,0x66,0x76,-1, -1, -1, -1, -1, 0x6e,0x7e,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*ror*/
{ 0x40,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*rti*/
{ 0x60,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*rts*/
{ -1, -1, -1, -1, -1, -1, -1, 0x2c2,-1, -1, -1, -1 ,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*rep*/
{ 0x26b,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 ,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*rtl*/
{ -1, 0xe5,0xf5,-1, 0x1f2,0xe1,0xf1,0x4e9,0xed,0xfd,0xf9,-1, -1, -1, -1, -1,-1,0x2ef,0x2ff,0x2e3,0x2f3,0x2e7,0x2f7,-1 }, /*sbc*/
{ 0x38,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*sec*/
{ 0xf8,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*sed*/
{ 0x78,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*sei*/
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,0x187, -1, -1, -1, -1, -1, -1, -1, -1 }, /*smb*/
{ -1, 0x85,0x95,-1, 0x192,0x81,0x91,-1, 0x8d,0x9d,0x99,-1, -1, -1, -1, -1,-1,0x28f,0x29f,0x283,0x293,0x287,0x297,-1 }, /*sta*/
{ -1, 0x86,-1, 0x96,-1, -1, -1, -1, 0x8e,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*stx*/
{ -1, 0x84,0x94,-1, -1, -1, -1, -1, 0x8c,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*sty*/
{ -1, 0x164,0x174,-1, -1, -1, -1, -1, 0x19c,0x19e,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*stz*/
{ -1, -1, -1, -1, -1, -1, -1, 0x2e2,-1, -1, -1, -1 ,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*sep*/
{ 0x2db,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 ,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*stp*/
{ 0xaa,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*tax*/
{ 0xa8,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*tay*/
{ -1, 0x114,-1, -1, -1, -1, -1, -1, 0x11c,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*trb*/
{ -1, 0x104,-1, -1, -1, -1, -1, -1, 0x10c,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*tsb*/
{ 0xba,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*tsx*/
{ 0x8a,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*txa*/
{ 0x9a,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*txs*/
{ 0x98,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*tya*/
{ 0x29b,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 ,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*txy*/
{ 0x2bb,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 ,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*tyx*/
{ 0x25b,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 ,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*tcd*/
{ 0x27b,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 ,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*tdc*/
{ 0x21b,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 ,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*tcs*/
{ 0x23b,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 ,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*tsc*/
{ 0x2cb,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 ,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*wai*/
{ 0x242,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 ,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*wdb*/
{ 0x2eb,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 ,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, /*xba*/
{ 0x2fb,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 ,-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 } /*xce*/
} ;
#define Syntax 14
#define Maxbyt 4
/* grouped syntaxes. each row = operand type, column = bytes allowed */
static int at[Syntax][Maxbyt] ={
{ 0, -1, -1 ,-1 }, /* implied: no operand */
{ -1, 7, -1 ,-1 }, /* immediate: single byte operand only */
{ -1, 15, -1 ,-1 }, /* relative: single byte operand only */
{ -1, -1, 14 ,-1 }, /* test'n'branch: two bytes only */
{ -1, 1, 8 ,17 }, /* addressing: 1 byte for zp,
2 for absolute,
3 for absolute long */
{ -1, 2, 9 ,18 }, /* ,x: same */
{ -1, 3, 10 ,-1 }, /* ,y: 1 byte for dp,y,
2 for absolute,y */
{ -1, 4, 12 ,-1 }, /* (indirect): 1 byte for (dp),
2 for (absolute) */
{ -1, 5, 13 ,-1 }, /* (i,x): 1 byte for (zp,x),
2 for (a,x) */
{ -1, 6, -1 ,-1 }, /* (i),y: 1 byte only */
{ -1, 21, 23 ,-1 }, /* (indirect long): 1 byte for (dp),
2 for (a) */
{ -1, 22, -1 ,-1 }, /* (indirect long),y: 1 byte only */
{ -1, 19, -1 ,-1 }, /* stack relative: 1 byte only */
{ -1, 20, -1 ,-1 } /* SR (in),y: 1 byte only */
};
#define AnzAlt 5
/* disambiguation table. for example, arbitrary instruction xxx $0000 could
be either interpreted as an absolute operand, or possibly relative.
note: does not look at comma or after, if present. */
static int xt[AnzAlt][2] ={ /* Alternativ Adr-Modes */
{ 8, 11 }, /* abs -> rel */
{ 2, 3 }, /* z,x -> z,y */
{ 5, 6 }, /* ,x) -> ),y */
{ 9, 10 }, /* a,x -> a,y */
{ 8, 16 } /* abs -> relong */
};
/* cross check: instruction should be this many bytes long in total */
/* indexed by addressing mode */
static int le[] ={ 1,2,2,2,2,2,2,2,3,3,3,2,3,3,3,2,
/* new modes */ 3,4,4,2,2,2,2,3 };
/* indicates absolute->zp optimizable addressing modes (abs->zp) */
/* indexed by addressing mode */
static int opt[] ={ -1,-1,-1,-1,-1,-1,-1,-1,1,2,3,-1,4,5,-1,-1,
/*new*/ -1,8,9,-1,-1,-1,-1,-1 }; /* abs -> zp */
/* pass 1 */
int t_p1(signed char *s, signed char *t, int *ll, int *al)
{
static int er,l,n,v,nk,na1,na2,bl,am,sy,i,label,byte; /*,j,v2 ;*/
int afl = 0;
/* notes and typical conventions ... er = error code
am = addressing mode in use
*/
bl=0;
*al = 0;
/* printf("\n"); */
/* convert the next token from string s */
#ifdef DEBUG_AM
fprintf(stderr, "- p1 %d starting -\n", pc[segment]);
#endif
er=t_conv(s,t,&l,pc[segment],&nk,&na1,&na2,0,&byte);
/* leaving our token sequence in t */
*ll=l;
/*
printf("t_conv (er=%d):",er);
for(i=0;i<l;i++)
printf("%02x,",t[i]);
printf("\n");
*/
/* if text/data produced, then no more fopt allowed in romable mode */
if((romable>1) && (t[0]<Kopen || t[0]==Kbyte || t[0]==Kpcdef)) {
afile->base[SEG_TEXT] = pc[SEG_TEXT] = romaddr + h_length();
romable=1;
}
if(!er)
{
/*
*
* pseudo-op dispatch (except .byt, .asc)
*
*/
n=t[0];
/* TODO: make that a big switch statement... */
/* maybe later. Cameron */
if(n==Kend || n==Klist || n==Kxlist) {
*ll = 0; /* ignore */
} else
if(n==Kfopt) {
if(romable==1) er=E_ROMOPT;
t[0] = Kbyt;
set_fopt(l,t,nk+1-na1+na2);
*ll = 0;
} else
if(n==Kpcdef)
{
int tmp;
if(!(er=a_term(t+1,&tmp /*&pc[SEG_ABS]*/,&l,pc[segment],&afl,&label,0)))
{
i=1;
wval(i,tmp /*pc[SEG_ABS]*/);
t[i++]=T_END;
*ll=6;
er=E_OKDEF;
/*printf("set pc=%04x, oldsegment=%d, pc[segm]=%04x, ",
pc[SEG_ABS], segment, pc[segment]);
printf(" wrote %02x %02x %02x %02x %02x %02x\n",
t[0],t[1],t[2],t[3],t[4],t[5]);*/
if(segment==SEG_TEXT) {
pc[SEG_ABS] = tmp;
r_mode(RMODE_ABS);
} else {
if(!relmode) {
pc[segment] = tmp;
} else {
er = E_ILLSEGMENT;
}
}
/*printf("newsegment=%d, pc[ABS]=%04x\n", segment, pc[SEG_ABS]);*/
} else { /* TODO: different error code */
if((segment==SEG_ABS) && (er==E_SYNTAX && l==0)) {
/*printf("reloc: oldseg=%d, pc[oldseg]=%04x, pc[abs]=%04x, pc[text]=%04x\n",
segment, pc[segment], pc[SEG_ABS], pc[SEG_TEXT]);*/
t[0]=Kreloc;
i=1;
wval(i,pc[SEG_TEXT]);
t[i++]=T_END;
*ll=6;
er=E_OKDEF;
r_mode(RMODE_RELOC);
/*printf(" : newseg=%d, pc[newseg]=%04x, pc[abs]=%04x, pc[text]=%04x\n",
segment, pc[segment], pc[SEG_ABS], pc[SEG_TEXT]);*/
}
}
} else
if(n==Kopen)
{
if(showblk) fprintf(stderr, "%s line %d: .(\n", pp_getidat()->fname, pp_getidat()->fline);
b_open();
er=E_NOLINE;
} else
if(n==Kclose)
{
if(showblk) fprintf(stderr, "%s line %d: .)\n", pp_getidat()->fname, pp_getidat()->fline);
er=b_close();
if(!er) er=E_NOLINE;
} else
if(n==Kalong)
{
if (!w65816) {
er=E_65816;
} else {
memode=1;
t[0]=Kalong;
*ll=1;
er=E_OKDEF;
}
} else
if(n==Kashort)
{
memode=0;
t[0]=Kashort;
*ll=1;
er=E_OKDEF;
} else
if(n==Kxlong)
{
if (!w65816) {
er=E_65816;
} else {
xmode=1;
t[0]=Kxlong;
*ll=1;
er=E_OKDEF;
}
} else
if(n==Kxshort)
{
xmode=0;
t[0]=Kxshort;
*ll=1;
er=E_OKDEF;
} else
if(n==Kdsb)
{
dsb_len = 1;
if(!(er=a_term(t+1,&bl,&l,pc[segment],&afl,&label,0))) {
er=E_OKDEF;
}
dsb_len = 0;
} else
if(n==Ktext) {
segment = relmode ? SEG_TEXT : SEG_ABS;
t[0]=Ksegment;
t[1]=segment;
*ll=2;
er=E_OKDEF;
} else
if(n==Kdata) {
if(relmode) {
segment = SEG_DATA;
t[0]=Ksegment;
t[1]=SEG_DATA;
*ll=2;
er=E_OKDEF;
} else {
er=E_ILLSEGMENT;
}
} else
if(n==Kbss) {
if(relmode) {
segment = SEG_BSS;
t[0]=Ksegment;
t[1]=SEG_BSS;
*ll=2;
er=E_OKDEF;
} else {
er=E_ILLSEGMENT;
}
} else
if(n==Kzero) {
if(relmode) {
segment = SEG_ZERO;
t[0]=Ksegment;
t[1]=SEG_ZERO;
*ll=2;
er=E_OKDEF;
} else {
er=E_ILLSEGMENT;
}
} else
if (n==Kbin) {
int j;
int l;
/* this first pass just calculates a prospective length
for pass 2. */
char binfnam[255];
int offset;
int length;
int fstart;
i = 1;
j = 0;
/* get offset */
if(!(er=a_term(t+i,&offset,&l,pc[segment],&afl,&label,1))) {
i += l;
}
if (offset < 0)
er = E_ILLQUANT;
if(t[i] == ',') { /* skip comma */
i++;
} else {
er = E_SYNTAX;
}
/* get length */
if (!er &&
!(er=a_term(t+i,&length,&l,pc[segment],&afl,&label,1)))
{
i += l;
}
if (length < 0)
er = E_ILLQUANT;
if(t[i] == ',') { /* skip comma */
i++;
} else {
er = E_SYNTAX;
}
/* get filename.
the tokenizer can either see it as a multichar string ... */
if (!er) {
int k;
fstart = i;
if(t[i]=='\"') {
i++;
k=t[i]+i+1;
i++;
while(i<k && !er) {
binfnam[j++] = t[i++];
if (j > 255)
er = E_NOMEM; /* buffer overflow */
}
binfnam[j] = '\0';
/* or as a 'char' if it's a single character ("word" would
have been caught by the above) */
} else
if(!(er=a_term(t+i,&v,&l,pc[segment],&afl,&label,1))) {
binfnam[0] = v;
binfnam[1] = '\0';
i += l;
}
}
/* three arguments only please */
if (!er && t[i] != T_END) {
er = E_SYNTAX;
}
if (!er) {
FILE *foo;
#ifdef DEBUG_AM
fprintf(stderr,
"binclude1 offset = %i len = %i filename = %s endchar = %i\n",
offset, length, binfnam, i);
#endif
if (!(foo = fopen(binfnam, "rb"))) {
er = E_FNF;
} else {
fseek(foo, 0, SEEK_END);
if ((length+offset) > ftell(foo)) {
er = E_OUTOFDATA;
} else {
length = (length) ? length :
(ftell(foo)-offset);
}
fclose(foo);
}
if (!er) {
if (length > 65535 && !w65816) {
errout(W_OVER64K);
} else if (length > 16777215) {
errout(W_OVER16M);
}
/* pass parameters back to xa.c */
*ll=i+1;
/*
bl=length+2;
*/
bl=length;
er = E_OKDEF; /* defer to pass 2 */
}
}
} else
if(n==Kalign) {
int tmp;
if(segment!=SEG_ABS) {
if(!(er=a_term(t+1,&tmp,&l,pc[segment],&afl,&label,0))) {
if(tmp == 1 || tmp == 2 || tmp == 4 || tmp == 256) {
set_align(tmp);
if(pc[segment] & (tmp-1)) { /* not aligned */
int tmp2;
t[0]=Kdsb;
i=1;
bl=tmp=(tmp - (pc[segment] & (tmp-1))) & (tmp-1);
wval(i,tmp);
t[i++]=',';
tmp2= 0xea;
wval(i,tmp2); /* nop opcode */
t[i++]=T_END;
*ll=9;
er=E_OKDEF;
} else {
*ll=0; /* ignore if aligned right */
}
} else {
er=E_ILLALIGN;
}
}
} else {
er=E_ILLSEGMENT;
}
} else
/* optimization okay on pass 1: use 0 for fl */
{
#ifdef DEBUG_AM
fprintf(stderr, "E_OK ... t_p2 xat.c %i %i\n", t[0], *ll);
#endif
er=t_p2(t,ll,(0 | byte), al);
}
} else
if(er==E_NODEF)
{
/*
* no label was found from t_conv!
* try to figure out most likely length
*
*/
#ifdef DEBUG_AM
fprintf(stderr, "E_NODEF pass1 xat.c\n");
#endif
er = E_OK; /* stuff error */
n=t[0]; /* look at first token */
/* mnemonic dispatch -- abbreviated form in t_p2, but changed here
to not do anything other than 24-bit optimization since we
don't know the value of the label */
/* choose addressing mode; add commas found */
if(n>=0 && n<=Lastbef && n != Kmvn && n != Kmvp) /* not for mvn/p */
{
if(t[1]==T_END)
{
sy=0; /* implied */
} else
if(t[1]=='#')
{
sy=1+nk; /* immediate */
} else
if(t[1]=='(')
{
sy=7+nk; /* computed */
} else
sy=4+nk; /* absolute or zero page */
/* length counter set to maximum length + 1 */
if (w65816 || (t[l-1]=='@' || t[l-1] == '!')) {
/* for 65816 allow addressing modes up to 4 byte overall length */
bl=Maxbyt+1;
} else {
/* for other modes only check for addressing modes up to 3 byte overall length */
bl=Maxbyt;
}
/* find best fit for length of this operand */
while(--bl)
{
/* look at syntax table (at) using syntax (sy) as index.
is there an addressing mode for an operand
of this length? am = addressing mode */
if((am=at[sy][bl-1])>=0)
{
if(am>Admodes-1) /* no, it's -1, syntax error */
{
er=E_SYNTAX;
break;
}
if(ct[n][am]>=0) /* yes, valid token *and* mode,
so we're done */
break;
/* no valid mode for this token, see if it's something
ambiguous; if so, try to interpret in that
context. */
for(v=0;v<AnzAlt;v++)
if(xt[v][0]==am && ct[n][xt[v][1]]>=0)
break;
if(v<AnzAlt) /* got a match for another context */
{
am=xt[v][1];
break;
}
}
}
/* optimize operand length for 24-bit quantities */
/* look at cast byte from t_conv */
if (t[l-1]!='@' && t[l-1] != '!')
{
if(bl && !er && opt[am]>=0 && am>16) /* <<< NOTE! */
if(ct[n][opt[am]]>=0)
am=opt[am];
}
/* if ` is declared, force further optimization */
if (t[l-1]=='`') {
if (opt[am]<0 || ct[n][opt[am]]<0)
errout(E_ADRESS);
am=opt[am];
}
/* if ! is declared, force to 16-bit quantity */
if (t[l-1]=='!' && am>16 && opt[am]>=0 && bl) {
am=opt[am];
}
/* couldn't match anything for this opcode */
if(!bl)
er=E_SYNTAX;
else {
/* ok, get length of instruction */
bl=le[am];
/* and add one for 65816 special instruction modes */
if( ((ct[n][am]&0x400) && memode) ||
((ct[n][am]&0x800) && xmode)) {
bl++;
}
}
if (er == E_NODEF)
er = E_OK;
/* .byt, .asc, .word, .dsb, .fopt pseudo-op dispatch */
} else
if(n==Kmvn || n==Kmvp)
{
bl=3;
if (!w65816) er = E_65816;
} else
if(n==Kbyt || n==Kasc || n==Kaasc)
{
#ifdef DEBUG_AM
fprintf(stderr, "byt pass 1 %i\n", nk+1-na1+na2);
#endif
bl=nk+1-na1+na2;
} else
if(n==Kword)
{
bl=2*nk+2;
} else
if(n==Kdsb)
{
er=a_term(t+1,&bl,&l,pc[segment],&afl,&label,0);
} else
if(n==Kfopt)
{
set_fopt(l-1,t+1, nk+1-na1+na2);
*ll = 0;
} else
if(n==T_OP)
{
er=E_OKDEF;
} else
er=E_NODEF;
if(!er)
er=E_OKDEF;
#ifdef DEBUG_AM
fprintf(stderr, "guessing instruction length is %d\n", bl);
#endif
}
if(er==E_NOLINE)
{
er=E_OK;
*ll=0;
}
*al += bl;
pc[segment]+=bl;
if(segment==SEG_TEXT) pc[SEG_ABS]+=bl;
if(segment==SEG_ABS) pc[SEG_TEXT]+=bl;
return(er);
}
/*t_pass 2*/
int t_p2(signed char *t, int *ll, int fl, int *al)
{
static int afl,nafl, i,j,k,er,v,n,l,bl,sy,am,c,vv[3],v2,label;
static int rlt[3]; /* relocation table */
static int lab[3]; /* undef. label table */
#if(0)
(void)fl; /* quench warning */
#endif
/* fl was not used in 2.2.0 so I'm overloading it for zp-optimization
control */
er=E_OK;
bl=0;
if(*ll<0) /* <0 bei E_OK, >0 bei E_OKDEF */
{
*ll=-*ll;
bl=*ll;
er=E_OK;
} else
{
n=t[0];
if(n==T_OP)
{
n=cval(t+1);
er=a_term(t+4,&v,&l,pc[segment],&nafl,&label,0);
if(!er)
{
if(t[3]=='=')
{
v2=v;
} else {
if( (!(er=l_get(n,&v2, &afl)))
&& ((afl & A_FMASK)!=(SEG_UNDEF<<8)) )
{
if(t[3]=='+')
{
if(afl && nafl) { errout(E_WPOINTER); nafl=0; }
nafl = afl;
v2+=v;
} else
if(t[3]=='-')
{
if( (((nafl & A_FMASK)>>8) != afl)
|| ((nafl & A_MASK)==A_HIGH) ) {
errout(E_WPOINTER);
nafl=0;
} else {
nafl = afl;
}
v2-=v;
} else
if(t[3]=='*')
{
if(afl || nafl) { errout(E_WPOINTER); nafl=0; }
v2*=v;
} else
if(t[3]=='/')
{
if(afl || nafl) { errout(E_WPOINTER); nafl=0; }
if(v)
v2/=v;
else
er=E_DIV;
} else
if(t[3]=='|')
{
if(afl || nafl) { errout(E_WPOINTER); nafl=0; }
v2=v|v2;
} else
if(t[3]=='&')
{
if(afl || nafl) { errout(E_WPOINTER); nafl=0; }
v2=v2&v;
}
}
}
l_set(n,v2,nafl>>8);
*ll=0;
if(!er)
er=E_NOLINE;
}
} else
if(n==Kword)
{
i=1;
j=0;
while(!er && t[i]!=T_END)
{
if(!(er=a_term(t+i,&v,&l,pc[segment],&afl,&label,1)))
{
/*if(afl) printf("relocation 1 %04x at pc=$%04x, value now =$%04x\n",
afl,pc[segment],v); */
if(afl) u_set(pc[segment]+j, afl, label, 2);
t[j++]=v&255;
t[j++]=(v>>8)&255;
i+=l;
if(t[i]!=T_END && t[i]!=',')
er=E_SYNTAX;
else
if(t[i]==',')
i++;
}
}
*ll=j;
bl=j;
} else
if (n == Kbin)
{
int j;
int l;
/* figure out our parameters again. repeat most of
the error checking since we might not be over
the total number of bogosities */
char binfnam[255];
int offset;
int length;
int fstart;
int flen;
i = 1;
j = 0;
flen = 0;
/* get offset */
if(!(er=a_term(t+i,&offset,&l,pc[segment],&afl,&label,1))) {
i += l;
}
if (offset < 0)
er = E_ILLQUANT;
if(t[i] == ',') { /* skip comma */
i++;
} else {
er = E_SYNTAX;
}
/* get length */
if (!er &&
!(er=a_term(t+i,&length,&l,pc[segment],&afl,&label,1)))
{
i += l;
}
if (length < 0)
er = E_ILLQUANT;
if(t[i] == ',') { /* skip comma */
i++;
} else {
er = E_SYNTAX;
}
/* get filename.
the tokenizer can either see it as a multichar string ... */
if (!er) {
int k;
fstart = i;
if(t[i]=='\"') {
i++;
k=t[i]+i+1;
i++;