mirror of https://github.com/brouhaha/dis6502.git
174 lines
3.7 KiB
C
174 lines
3.7 KiB
C
/*
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* dis6502 by Robert Bond, Udi Finkelstein, and Eric Smith
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*
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* Copyright 2000-2018 Eric Smith <spacewar@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation. Note that permission is
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* not granted to redistribute this program under the terms of any
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* other version of the General Public License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA
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*/
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extern bool sevenbit; /* if true, mask character data with 0x7f
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to ignore MSB */
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typedef uint16_t addr_t;
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#define NPREDEF 10
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extern char *predef[];
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extern int npredef;
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extern char *file;
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extern char *progname;
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extern int bopt;
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enum boot_mode { UNKNOWN, RAW_BINARY, ATARI_LOAD, C64_LOAD, ATARI_BOOT };
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extern int base_address, vector_address;
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#define MAX_ENTRY 100
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extern int entry_count;
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extern int entry_address[MAX_ENTRY];
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extern bool prodos;
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extern int asmout;
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extern unsigned char f[];
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extern unsigned char d[];
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extern long offset[];
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#define getword(x) (d[x] + (d[x+1] << 8))
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#define getbyte(x) (d[x])
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/* f bits */
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#define LOADED 1 /* Location loaded */
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#define JREF 2 /* Referenced as jump/branch dest */
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#define DREF 4 /* Referenced as data */
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#define SREF 8 /* Referenced as subroutine dest */
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#define NAMED 0x10 /* Has a name */
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#define TDONE 0x20 /* Has been traced */
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#define ISOP 0x40 /* Is a valid instruction opcode */
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#define OFFSET 0x80 /* should be printed as an offset */
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struct info {
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char *opn;
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int nb;
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int flag;
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};
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extern struct info optbl[];
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/* Flags */
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/* Where control goes */
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#define JUMP 2
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#define FORK 4
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#define STOP 8
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#define CTLMASK (JUMP|FORK|STOP)
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/* Instruction format */
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#define IMM 0x20
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#define ABS 0x40
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#define ACC 0x80
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#define IMP 0x100
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#define INX 0x200
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#define INY 0x400
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#define ZPX 0x800
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#define ABX 0x1000
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#define ABY 0x2000
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#define REL 0x4000
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#define IND 0x8000
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#define ZPY 0x10000
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#define ZPG 0x20000
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#define INZ 0x40000
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#define ADRMASK (IMM|ABS|ACC|IMP|INX|INY|ZPX|ABX|ABY|REL|IND|ZPY|ZPG|INZ)
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struct ref_chain {
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struct ref_chain *next;
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int who;
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};
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struct ref_chain *get_ref(addr_t loc);
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char *get_name(addr_t loc);
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/* lex junk */
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#define EQ 256
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#define NUMBER 257
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#define NAME 258
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#define COMMENT 259
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#define LI 260
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#define TSTART 261
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#define TSTOP 262
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#define TRTSTAB 263
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#define TJTAB2 264
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#define TJTAB 265
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#define EQS 266
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#define OFS 267
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extern FILE *yyin, *yyout;
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int lineno;
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int yywrap(), yyerror();
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char *emalloc();
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typedef union {
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int ival;
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char *sval;
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} VALUE;
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extern VALUE token;
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/* in scanner generated from lex.l: */
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int yylex (void);
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/* in initopts.c: */
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void initopts (int argc, char *argv[]);
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/* in print.c: */
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void dumpitout (void);
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int pchar (int c);
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void print_bytes (addr_t addr);
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int print_inst(addr_t addr);
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int print_data (addr_t i);
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void print_refs (void);
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/* in ref.c: */
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void save_ref (addr_t refer, addr_t refee);
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void save_name (addr_t loc, char *name);
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/* in trace_queue.c: */
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void init_trace_queue (void);
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int trace_queue_empty (void);
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void push_trace_queue (addr_t addr);
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addr_t pop_trace_queue (void);
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/* in main.c: */
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void crash (char *p) __attribute__ ((noreturn));
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void get_predef (void);
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void loadboot (void);
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void loadfile (void);
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void c64loadfile (void);
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void binaryloadfile (void);
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