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/*
HEADER: CUG149;
TITLE: 6801 Cross-Assembler (Portable);
FILENAME: A68.H;
VERSION: 3.5;
DATE: 08/27/1988;
DESCRIPTION: "This program lets you use your computer to assemble
code for the Motorola 6800, 6801, 6802, 6803, 6808,
and 68701 microprocessors. The program is written in
portable C rather than BDS C. All assembler features
are supported except relocation, linkage, and macros.";
KEYWORDS: Software Development, Assemblers, Cross-Assemblers,
Motorola, MC6800, MC6801;
SEE-ALSO: CUG113, 6800 Cross-Assembler;
SYSTEM: CP/M-80, CP/M-86, HP-UX, MSDOS, PCDOS, QNIX;
COMPILERS: Aztec C86, Aztec CII, CI-C86, Eco-C, Eco-C88, HP-UX,
Lattice C, Microsoft C, QNIX C;
WARNINGS: "This program has compiled successfully on 2 UNIX
compilers, 5 MSDOS compilers, and 2 CP/M compilers.
A port to BDS C would be extremely difficult, but see
volume CUG113. A port to Toolworks C is untried."
AUTHORS: William C. Colley III;
*/
/*
6801 Cross-Assembler in Portable C
Copyright (c) 1985 William C. Colley, III
Revision History:
Ver Date Description
3.0 APR 1985 Recoded from BDS C version 2.5. WCC3.
3.1 AUG 1985 Greatly shortened the routines find_symbol() and
new_symbol(). Fixed bugs in expression evaluator.
Added compilation instructions for Aztec C86,
Microsoft C, and QNIX C. Added optional optimizations
for 16-bit machines. Adjusted structure members for
fussy compilers. WCC3.
3.2 SEP 1985 Added the INCL pseudo-op and associated stuff. WCC3.
3.3 JUL 1986 Added compilation instructions and tweaks for CI-C86,
Eco-C88, and Lattice C. WCC3.
3.4 JAN 1987 Fixed bug that made "FCB 0," legal syntax. WCC.
3.5 AUG 1988 Fixed a bug in the command line parser that puts it
into a VERY long loop if the user types a command line
like "A68 FILE.ASM -L". WCC3 per Alex Cameron.
This header file contains the global constants and data type definitions for
all modules of the cross-assembler. This also seems a good place to put the
compilation and linkage instructions for the animal. This list currently
includes the following compilers:
Compiler Name Op. Sys. Processor
1) Aztec C86 CP/M-86 8086, 8088
MSDOS/PCDOS
2) AZTEC C II CP/M-80 8080, Z-80
3) Computer Innovations C86 MSDOS/PCDOS 8086, 8088
4) Eco-C CP/M-80 Z-80
5) Eco-C88 MSDOS/PCDOS 8086, 8088
6) HP C HP-UX 68000
7) Lattice C MSDOS/PCDOS 8086, 8088
8) Microsoft C MSDOS/PCDOS 8086, 8088
9) QNIX C QNIX 8086, 8088
Further additions will be made to the list as users feed the information to
me. This particularly applies to UNIX and IBM-PC compilers.
Compile-assemble-link instructions for this program under various compilers
and operating systems:
1) Aztec C86:
A) Uncomment out the "#define AZTEC_C 1" line and comment out all
other compiler names in A68.H.
B) Assuming that all files are on drive A:, run the following sequence
of command lines:
A>cc a68
A>cc a68eval
A>cc a68util
A>ln a68.o a68eval.o a68util.o -lc
A>era a68*.o
2) Aztec CII (version 1.06B):
A) Uncomment out the "#define AZTEC_C 1" line and comment out all
other compiler names in A68.H.
B) Assuming the C compiler is called "CC.COM" and all files are
on drive A:, run the following sequence of command lines:
A>cc a68
A>as -zap a68
A>cc a68eval
A>as -zap a68eval
A>cc a68util
A>as -zap a68util
A>ln a68.o a68eval.o a68util.o -lc
A>era a68*.o
3) Computer Innovations C86:
A) Uncomment out the "#define CI_C86 1" line and comment out all
other compiler names in A68.H.
B) Compile the files A68.C, A68EVAL.C, and A68UTIL.C. Link
according to instructions that come with the compiler.
4) Eco-C (CP/M-80 version 3.10):
A) Uncomment out the "#define ECO_C 1" line and comment out all
other compiler names in A68.H.
B) Assuming all files are on drive A:, run the following sequence of
command lines:
A>cp a68 -i -m
A>cp a68eval -i -m
A>cp a68util -i -m
A>l80 a68,a68eval,a68util,a68/n/e
A>era a68*.mac
A>era a68*.rel
5) Eco-C88:
A) Uncomment out the "#define ECO_C 1" line and comment out all
other compiler names in A68.H.
B) Compile the files A68.C, A68EVAL.C, and A68UTIL.C. Link
according to instructions that come with the compiler.
6) HP-UX (a UNIX look-alike running on an HP-9000 Series 200/500,
68000-based machine):
A) Uncomment out the "#define HP_UX 1" line and comment out all
other compiler names in A68.H.
B) Run the following command line:
. cc a68.c a68eval.c a68util.c
7) Lattice C:
A) Uncomment out the "#define LATTICE_C 1" line and comment out all
other compiler names in A68.H.
B) Compile the files A68.C, A68EVAL.C, and A68UTIL.C. Link
according to instructions that come with the compiler.
8) Microsoft C (version 3.00):
A) Uncomment out the "#define MICROSOFT_C 1" line and comment out
all other compiler names in A68.H.
B) Run the following command line:
C>cl a68.c a68eval.c a68util.c
9) QNIX C:
A) Uncomment out the "#define QNIX 1" line and comment out all other
compiler names in A68.H.
B) Run the following command line:
. cc a68.c a68eval.c a68util.c
Note that, under CP/M-80, you can't re-execute a core image from a previous
assembly run with the "@.COM" trick. This technique is incompatible with the
Aztec CII compiler, so I didn't bother to support it at all.
*/
#include <stdio.h>
/* Comment out all but the line containing the name of your compiler: */
#define AZTEC_C 1
/* #define CI_C86 1 */
/* #define ECO_C 1 */
/* #define HP_UX 1 */
/* #define LATTICE_C 1 */
/* #define MICROSOFT_C 1 */
/* #define QNIX 1 */
/* Compiler dependencies: */
#ifdef AZTEC_C
#define getc(f) agetc(f)
#define putc(c,f) aputc(c,f)
#endif
#ifndef ECO_C
#define FALSE 0
#define TRUE (!0)
#endif
#ifdef LATTICE_C
#define void int
#endif
#ifdef QNIX
#define fprintf tfprintf
#define printf tprintf
#endif
/* On 8-bit machines, the static type is as efficient as the register */
/* type and far more efficient than the auto type. On larger machines */
/* such as the 8086 family, this is not necessarily the case. To */
/* let you experiment to see what generates the fastest, smallest code */
/* for your machine, I have declared internal scratch variables in */
/* functions "SCRATCH int", "SCRATCH unsigned", etc. A SCRATCH */
/* varible is made static below, but you might want to try register */
/* instead. */
#define SCRATCH static
/* A slow, but portable way of cracking an unsigned into its various */
/* component parts: */
#define clamp(u) ((u) &= 0xffff)
#define high(u) (((u) >> 8) & 0xff)
#define low(u) ((u) & 0xff)
#define word(u) ((u) & 0xffff)
/* The longest source line the assembler can hold without exploding: */
#define MAXLINE 255
/* The maximum number of source files that can be open simultaneously: */
#define FILES 4
/* The fatal error messages generated by the assembler: */
#define ASMOPEN "Source File Did Not Open"
#define ASMREAD "Error Reading Source File"
#define DSKFULL "Disk or Directory Full"
#define FLOFLOW "File Stack Overflow"
#define HEXOPEN "Object File Did Not Open"
#define IFOFLOW "If Stack Overflow"
#define LSTOPEN "Listing File Did Not Open"
#define NOASM "No Source File Specified"
#define SYMBOLS "Too Many Symbols"
/* The warning messages generated by the assembler: */
#define BADOPT "Illegal Option Ignored"
#define NOHEX "-o Option Ignored -- No File Name"
#define NOLST "-l Option Ignored -- No File Name"
#define TWOASM "Extra Source File Ignored"
#define TWOHEX "Extra Object File Ignored"
#define TWOLST "Extra Listing File Ignored"
/* Line assembler (A68.C) constants: */
#define BIGINST 3 /* longest instruction length */
#define IFDEPTH 16 /* maximum IF nesting level */
#define NOP 0x01 /* processor's NOP opcode */
#define ON 1 /* assembly turned on */
#define OFF -1 /* assembly turned off */
/* Line assembler (A68.C) opcode attribute word flag masks: */
#define PSEUDO 0x200 /* is pseudo op */
#define ISIF 0x100 /* is IF, ELSE, or ENDI */
#define IS6801 0x080 /* is 6801 only opcode */
#define DIROK 0x040 /* can use direct addressing */
#define REL 0x020 /* must use relative addressing */
#define INDEX 0x010 /* can use indexed addressing */
#define IMM16 0x008 /* can use 16-bit immediate addressing */
#define IMM8 0x004 /* can use 8-bit immediate addressing */
#define REGOPT 0x002 /* A or B specification optional */
#define REGREQ 0x001 /* must have A or B specified */
/* Line assembler (A68.C) pseudo-op opcode token values: */
#define CPU 1
#define ELSE 2
#define END 3
#define ENDI 4
#define EQU 5
#define FCB 6
#define FCC 7
#define FDB 8
#define IF 9
#define INCL 10
#define ORG 11
#define PAGE 12
#define RMB 13
#define SET 14
#define TITL 15
/* Lexical analyzer (A68EVAL.C) token buffer and stream pointer: */
typedef struct {
unsigned attr;
unsigned valu;
char sval[MAXLINE + 1];
} TOKEN;
/* Lexical analyzer (A68EVAL.C) token attribute values: */
#define EOL 0 /* end of line */
#define SEP 1 /* field separator */
#define OPR 2 /* operator */
#define STR 3 /* character string */
#define VAL 4 /* value */
#define IMM 5 /* immediate designator */
#define REG 6 /* register designator */
/* Lexical analyzer (A68EVAL.C) token attribute word flag masks: */
#define BINARY 0x8000 /* Operator: is binary operator */
#define UNARY 0x4000 /* is unary operator */
#define PREC 0x0f00 /* precedence */
#define FORWD 0x8000 /* Value: is forward referenced */
#define SOFT 0x4000 /* is redefinable */
#define TYPE 0x000f /* All: token type */
/* Lexical analyzer (A68EVAL.C) operator token values (unlisted ones */
/* use ASCII characters): */
#define AND 0
#define GE 1
#define HIGH 2
#define LE 3
#define LOW 4
#define MOD 5
#define NE 6
#define NOT 7
#define OR 8
#define SHR 9
#define SHL 10
#define XOR 11
/* Lexical analyzer (A68EVAL.C) operator precedence values: */
#define UOP1 0x0000 /* unary +, unary - */
#define MULT 0x0100 /* *, /, MOD, SHL, SHR */
#define ADDIT 0x0200 /* binary +, binary - */
#define RELAT 0x0300 /* >, >=, =, <=, <, <> */
#define UOP2 0x0400 /* NOT */
#define LOG1 0x0500 /* AND */
#define LOG2 0x0600 /* OR, XOR */
#define UOP3 0x0700 /* HIGH, LOW */
#define RPREN 0x0800 /* ) */
#define LPREN 0x0900 /* ( */
#define ENDEX 0x0a00 /* end of expression */
#define START 0x0b00 /* beginning of expression */
/* Utility package (A68UTIL.C) symbol table routines: */
struct _symbol {
unsigned attr;
unsigned valu;
struct _symbol *left, *right;
char sname[1];
};
typedef struct _symbol SYMBOL;
#define SYMCOLS 4
/* Utility package (A68UTIL.C) opcode/operator table routines: */
typedef struct {
unsigned attr;
unsigned valu;
char oname[5];
} OPCODE;
/* Utility package (A68UTIL.C) hex file output routines: */
#define HEXSIZE 32