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xatmas2.c
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/*
* xatmas2 - Atmas 2 compatible Cross-Assembler
*
* Copyright (C) 2004-2011 by Richard Jackman <richard.miles.jackman@gmail.com>
* Copyright (C) 2018 by Ivo van Poorten <ivopvp@gmail.com>
* See LICENSE for details
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <time.h>
#include <unistd.h>
#include <err.h>
#include <stdarg.h>
#define fclose(x) if (x) { fclose(x); x=NULL; }
typedef struct { /* Define the structure ssstype */
char symbol[9];
unsigned int symadr;
char ofst;
char macf;
char symtyp;
} ssstype;
#define MAX_BIN_SIZ 0x1ffffL
#define MAXSYMS 2000
#define MAXMACSYMS 200
#define MAXLOCLABS 50
#define MXLBS 10 // maximum # of labels in present macro
#define MAXMACLEV 10 // maximum # ofnesting levels in macros
#define NOTFOUND 0xeffff
#define MAX_TXT_SIZ 0xfffffL
#define MAXDUMS 20
#define LSTBYTES 10
enum { OPC, NN, AA, AAAA, AAX, AAAAX, AAY, AAAAY, BAAXB, BAABY, BRA, BAAAAB,
ERROR
};
enum { UNUSED, SYMBOL, MACRO, MACRO_UNUSED, MACRO_LAB };
static const char opcdat[] =
"BITSTYLDYCPYCPXORAANDEORADCSTALDACMPSBCASLROLLSRRORSTXLDXDECINC";
static const unsigned short data[21][15] = {
/* BIT */
{0, 0, 0x24, 0x2C, 0, 0, 0, 0, 0, 0xD6, 0x67, 0x46, 0x48, 0x4A},
/* STY */
{0, 0, 0x84, 0x8C, 0x94, 0, 0, 0, 0, 0, 0xD6, 0x67, 0x46, 0, 0},
/* LDY */
{0, 0xA0, 0xA4, 0xAC, 0xB4, 0xBC, 0, 0, 0, 0, 0xD6, 0x67, 0x46, 0xD0, 0x4A},
/* CPY */
{0, 0xC0, 0xC4, 0xCC, 0, 0, 0, 0, 0, 0, 0xD6, 0x67, 0x46, 0, 0},
/* CPX */
{0, 0xE0, 0xE4, 0xEC, 0, 0, 0, 0, 0, 0, 0xD6, 0x67, 0x46, 0, 0},
/* ORA */
{0, 9, 5, 0xD, 0x15, 0x1D, 0, 0x19, 1, 0x11, 0xD6, 0x67, 0x46, 0, 0},
/* AND */
{0, 0x29, 0x25, 0x2D, 0x35, 0x3D, 0, 0x39, 0x21, 0x31, 0xD6, 0x67, 0x46, 0, 0},
/* EOR */
{0, 0x49, 0x45, 0x4D, 0x55, 0x5D, 0, 0x59, 0x41, 0x51, 0xD6, 0x67, 0x46, 0, 0},
/* ADC */
{0, 0x69, 0x65, 0x6D, 0x75, 0x7D, 0, 0x79, 0x61, 0x71, 0xD6, 0x67, 0x46, 0xBF, 0x4A},
/* STA */
{0, 0, 0x85, 0x8D, 0x95, 0x9D, 0, 0x99, 0x81, 0x91, 0xD6, 0x67, 0x46, 0, 0},
/* LDA */
{0, 0xA9, 0xA5, 0xAD, 0xB5, 0xBD, 0, 0xB9, 0xA1, 0xB1, 0xD6, 0x67, 0x46, 0, 0},
/* CMP */
{0, 0xC9, 0xC5, 0xCD, 0xD5, 0xDD, 0, 0xD9, 0xC1, 0xD1, 0xD6, 0x67, 0x46, 0, 0},
/* SBC */
{0, 0xE9, 0xE5, 0xED, 0xF5, 0xFD, 0, 0xF9, 0xE1, 0xF1, 0xD6, 0x67, 0x46, 0x9E, 0x49},
/* ASL */
{0xA, 0, 6, 0xE, 0x16, 0x1E, 0, 0, 0, 0, 0xD6, 0x67, 0x46, 0, 0},
/* ROL */
{0x2A, 0, 0x26, 0x2E, 0x36, 0x3E, 0, 0, 0, 0, 0xD6, 0x67, 0x46, 0x37, 0x4A},
/* LSR */
{0x4A, 0, 0x46, 0x4E, 0x56, 0x5E, 0, 0, 0, 0, 0xD6, 0x67, 0x46, 0xF3, 0x49},
/* ROR */
{0x6A, 0, 0x66, 0x6E, 0x76, 0x7E, 0, 0, 0, 0, 0xD6, 0x67, 0x46, 0x8D, 0x49},
/* STX */
{0, 0, 0x86, 0x8E, 0, 0, 0x96, 0, 0, 0, 0xD6, 0x67, 0x46, 0x15, 0x4A},
/* LDX */
{0, 0xA2, 0xA6, 0xAE, 0, 0, 0xB6, 0xBE, 0, 0, 0xD6, 0x67, 0x46, 0, 0},
/* DEC */
{0, 0, 0xC6, 0xCE, 0xD6, 0xDE, 0, 0, 0, 0, 0xD6, 0x67, 0x46, 0, 0},
/* INC */
{0, 0, 0xE6, 0xEE, 0xF6, 0xFE, 0, 0, 0, 0, 0, 0, 0, 0, 0}
};
unsigned int sgndtb[100], *sgndtbptr1, *sgndtbptr2, pcsv;
char double_byte_flg = 1;
char ch;
char section_type;
char *txtptr, *txtptr_sav; /* pointer for all addresses in this buffer */
char opcode[40], operand[300];
char *xlbfptr;
char *linbegptr; /* begin of present line */
char outflgs[40];
char linbuf[MAXMACLEV][80];
int txtsiz, include_txtsiz;
int symnum, symval, linnum, linnum_sav, mismatch_linnum, symnumext;
unsigned int pc, pc_sav, mismatch_pc;
int presymnum;
int secsiz;
short linlen; /* length of present line in text buffer */
int cnt;
short pass;
short labflg;
short orgflg;
short lstflg;
short include_flg;
short data_flg;
short lensv;
int bin;
short find_symad_flg;
short maclevel;
short symfg;
int donum;
int loopnum;
int minusnum;
int plusnum;
int skipnum;
int contnum;
int endifnum;
char tempstr[5];
char prnlnbufbeg[120];
char prnlnbuf2[10][40];
char cmpflbytln[9][40];
short mismatchln_flg[10];
short bytcnt;
short prnlnum;
char xlbuf[MAX_BIN_SIZ];
char prnlnbuf[120];
char *src_filename, *lstfilename, *xexfilename;
char include_filename[300];
ssstype sss[MAXSYMS];
FILE *stream; // src file, later xex file
FILE *stream2; // lis file
FILE *stream3; // included files
fpos_t pos2;
static const char opcdat1[] = "BRKPHPASLCLCPLPROLSECRTIPHALSRCLIRTSPLARORSEI"
"DEYTXATYATXSTAYTAXCLVTSXINYDEXCLDINXNOPSED";
static const int dat1[] = { 0, 8, 10, 24, 40, 42, 56, 64, 72, 74, 88, 96, 104,
106, 120, 136, 138, 152, 154, 168, 170, 184, 186, 200, 202, 216, 232, 234,
248
};
static const char opcds[] =
" BIT STY LDY CPY CPX ORA AND EOR ADC STA LDA CMP SBC"
" ASL ROL LSR ROR STX LDX DEC INC BRK PHP ASL CLC PLP ROL SEC RTI PHA LSR"
" CLI RTS PLA ROR SEI DEY TXA TYA TXS TAY TAX CLV TSX INY DEX CLD INX NOP"
" SED BPL BMI BVC BVS BCC BCS BNE BEQ JMP JSR "; // for checking labels
static const char assdirecs[] =
" EQU EPZ ORG ASC DFB DFW ORG RMB INITRMB FILLMEM INCLUDE ";
static const char assdirecssolo[] = " OUT NOHEADER ";
static const char brastrdat[] = "BPLBMIBVCBVSBCCBCSBNEBEQ";
static const unsigned short bradat[] =
{ 0x10, 0x30, 0x50, 0x70, 0x90, 0xb0, 0xd0, 0xf0 };
static const int intab[] = { 0x40, 0, 0x20, 0x60, 0xA0, 0xC0, 0x80, 0xE0 };
// ----------------------------------------------------------------------------
static int quiet;
static void info_and_fatal(const int s, char *f, ...) {
va_list ap;
if (s) {
if (linnum) fprintf(stderr, "xatmas2: error at line %d\n", linnum);
if (pc) fprintf(stderr, "xatmas2: address: $%04X\n", pc);
if (maclevel) fprintf(stderr, "xatmas2: error in macro\n");
} else if (quiet) {
return;
}
va_start(ap,f);
fprintf(stderr, "xatmas2: %s: ", s ? "fatal" : "info");
vfprintf(stderr, f, ap);
va_end(ap);
if (s) exit(s);
}
#define info(...) info_and_fatal(0, __VA_ARGS__)
#define fatal(...) info_and_fatal(1, __VA_ARGS__)
// ----------------------------------------------------------------------------
static int prec(char symbol) {
if (symbol == '+' || symbol == '-') return 1;
if (symbol == '*' || symbol == '/') return 2;
return 0;
}
// ----------------------------------------------------------------------------
static unsigned int symtoi3(char *strbeg) {
if (symnum == 0) return (NOTFOUND);
for (int i=0; i<symnum; i++) {
for (int j=0; sss[i].symbol[j] == strbeg[j]; j++) {
if ((!strbeg[j] && !sss[i].symbol[j])) return (sss[i].symadr);
}
}
return (NOTFOUND);
}
// ----------------------------------------------------------------------------
/*********** symtoi1()
* converts symbol or number to integer (return value begins at txtptr.
* When done txtptr is the address directly after the location of symbol.
* If evaluation is not possible,the value returned is NOTFOUND
*/
static unsigned int symtoi1() {
char strbeg[40];
char *ptr;
char ch;
unsigned int i, chrcnt;
ssstype *sssptr;
ptr = strbeg;
ch = *txtptr;
symfg = 0;
if (ch == '*') { /* *:program counter) */
txtptr++;
return (pc);
}
if (isdigit(ch)) { /* :Decimal */
while (isdigit(*txtptr))
*ptr++ = *txtptr++;
*ptr = '\0';
return (atoi(strbeg));
}
if (ch == '%') { /* %:Binary */
txtptr++;
if (!(*txtptr == '0' || *txtptr == '1'))
fatal("Binary digit 0 or 1 expected.\n");
ch = 0;
chrcnt = 1;
while (*txtptr == '0' || *txtptr == '1') {
if (chrcnt++ > 8)
fatal("too many binary digits. maximum number of digits is "
"8. e.g. %10010011\n");
ch <<= 1;
ch += *txtptr++ - '0';
}
return (ch);
}
if (ch == '$') { /* $:Hex */
txtptr++;
if (isxdigit(*txtptr) == 0)
fatal("hexidecimal digit expected\n");
chrcnt = 1;
while (isxdigit(*txtptr)) {
if (chrcnt++ > 4)
fatal("too many hexdecimal digits. maximum number of digits "
"is 4 eg. $1234.\n");
*ptr++ = *txtptr++;
}
*ptr = '\0';
sscanf(strbeg, "%x", &i);
return (i);
}
if (*txtptr == '\'') { /* ':ASCII character */
txtptr++;
ch = *txtptr++;
if (*txtptr == '\'')
txtptr++;
return (ch);
}
switch (ch) {
case '+':
strcpy(strbeg, "PLUS");
break;
case '-':
strcpy(strbeg, "MINUS");
break;
default: //label
if (isspace(*txtptr))
fatal("illegal space, tab, or end of line\n");
if (!(isalpha(*txtptr)))
fatal("label must begin with a letter\n");
while (isalnum(*txtptr))
*ptr++ = (char)toupper(*txtptr++);
*ptr = '\0'; //label
}
//printf ("opcode: %s\tstrbeg: %s\n",operand,strbeg);
if (pass == 1) {
if (find_symad_flg)
return (symtoi3(strbeg));
} else { /* pass == 2 */
if ((strcmp(strbeg, "DO") == 0))
sprintf(strbeg, "DO%4.4i", donum);
if ((strcmp(strbeg, "LOOP") == 0))
sprintf(strbeg, "LOOP%4.4i", loopnum);
if ((strcmp(strbeg, "MINUS") == 0))
sprintf(strbeg, "MINU%4.4i", minusnum);
if ((strcmp(strbeg, "PLUS") == 0))
sprintf(strbeg, "PLUS%4.4i", plusnum);
if ((strcmp(strbeg, "SKIP") == 0))
sprintf(strbeg, "SKIP%4.4i", skipnum);
if ((strcmp(strbeg, "CONT") == 0))
sprintf(strbeg, "CONT%4.4i", contnum);
if ((strcmp(strbeg, "ENDIF") == 0))
sprintf(strbeg, "ENDI%4.4i", endifnum);
if ((sssptr =
bsearch(strbeg, sss, symnum, sizeof(ssstype), (int (*)(const void *, const void *)) strcmp)) != 0) {
if (maclevel)
sssptr->macf = MACRO_LAB;
else
sssptr->macf = SYMBOL;
if (*txtptr == '+') {
if ((*(txtptr + 1) - '0') > sssptr->ofst)
sssptr->ofst = *(txtptr + 1) - '0';
//The next two lines take care of hidden labels
if (*(txtptr + 2) == '+')
sssptr->ofst = sssptr->ofst + *(txtptr + 3) - '0';
}
if (*txtptr == '-')
sssptr->ofst = (char)(256 - (*(txtptr + 1) - '0'));
symfg = 1;
return (sssptr->symadr);
} else {
fatal("label undefined\n");
}
}
return (NOTFOUND);
}
// ----------------------------------------------------------------------------
static unsigned int expresstoi() {
int i;
int result = 0;
char notfound = 0;
char *tptrsv, *ptr;
char infix[50], postfix[50];
int symval_list[30];
int symval_cnt = 0;
int j = 0, k = 0, length;
char temp;
char stack[30];
int intstack[30];
int tos = 0;
int a, b;
tptrsv = txtptr;
ptr = infix;
// tokenise ************
if (*operand == '(')
*ptr++ = '('; //because txtptr++ if beginning bracket
if (isspace(*(txtptr + 1)))
if ((*txtptr == '-') || (*txtptr == '+'))
return (symtoi1()); // "- " is DO, "+ " is CONT
do {
switch (*txtptr) {
case '+':
case '-':
if ((tptrsv == txtptr) || (*(txtptr - 1) == '(')) {
symval_list[symval_cnt] = 0;
*ptr++ = symval_cnt++ + 'A';
}
case '/':
case '*':
case ')':
case '(':
*ptr++ = *txtptr++;
break;
default:
if ((symval_list[symval_cnt] = symtoi1()) == NOTFOUND)
notfound = 1;
*ptr++ = symval_cnt++ + 'A';
}
} while (!(isspace(*txtptr) || (*txtptr == ',') || (*txtptr == ':')));
if (*txtptr == ',') //if ",X)"
if (*(txtptr + 1) == 'X' || *(txtptr + 1) == 'x')
if (*(txtptr + 2) == ')')
if (isspace(*(txtptr + 3)))
*ptr++ = ')'; // add ')'
*ptr = '\0';
//printf ("%s\n",infix);
ptr = strchr(infix, '*');
while (ptr) {
if (!isalpha(*(ptr + 1)) && (*(ptr + 1) != '(')) {
symval_list[symval_cnt] = pc;
*ptr = symval_cnt++ + 'A';
}
ptr = strchr(++ptr, '*');
}
//convert to postfix *********
i = j = k = length = 0;
length = strlen(infix);
for (i = 0; i < length; i++) {
if (!strchr("+-*/()", infix[i])) //Numbers are added to postfix string
postfix[j++] = infix[i];
else //If an operator or a bracket is encountered...
{
if (tos == 0) //If the stack is empty, the operator is added to it
stack[tos++] = infix[i];
else //stack not empty
{ //Operators are pushed or popped based on the order of precedence
if (infix[i] != ')' && infix[i] != '(') {
if (prec(infix[i]) <= prec(stack[tos - 1]))
postfix[j++] = stack[--tos];
stack[tos++] = infix[i];
} else {
if (infix[i] == '(')
stack[tos++] = infix[i];
if (infix[i] == ')') {
temp = stack[--tos];
while (temp != '(') {
postfix[j++] = temp;
if (tos == 0)
fatal("missing opening parenthesis\n");
temp = stack[--tos];
}
}
}
}
}
postfix[j] = '\0';
}
while (tos != 0) {
postfix[j++] = stack[--tos];
}
postfix[j] = '\0';
// convert postfix to int ***************
tos = 0;
ptr = postfix;
while (*ptr) {
if (isalpha(*ptr))
intstack[tos++] = symval_list[*ptr - 'A'];
else {
b = intstack[--tos];
a = intstack[--tos];
switch (*ptr) {
case '+':
intstack[tos++] = a + b;
break;
case '-':
intstack[tos++] = a - b;
break;
case '*':
intstack[tos++] = a * b;
break;
case '/':
intstack[tos++] = a / b;
break;
default:
if (*ptr == '(') fatal("missing closing parenthisis\n");
fatal("infix: %s - character '%c' in %s operand "
"is %s. illegal character in postfix expression\n",
infix, *ptr, postfix, operand);
break;
}
}
ptr++;
}
if (strstr(opcode, "),Y"))
txtptr--;
result = intstack[--tos];
if (tos) {
fatal("operand: %s infix: %s postfix: %s "
"illegal syntax. can't resolve expression\n",
operand, infix, postfix);
}
if( *txtptr == ':' )
{
if ( *(txtptr + 1) == 'L' )
{
txtptr += 2;
result = result & 0xFF;
}
else if ( *(txtptr + 1) == 'H' )
{
txtptr += 2;
result = result >> 8;
}
}
if (notfound)
result = NOTFOUND;
return (result);
}
// ----------------------------------------------------------------------------
static unsigned int expresstoi_p2() {
unsigned int val;
find_symad_flg = 0;
val = expresstoi();
find_symad_flg++;
return (val);
}
// ----------------------------------------------------------------------------
static void sectyp(char line_type) {
if (!labflg && (line_type == ';') && strchr("!&'", section_type))
line_type = section_type;
if ((line_type != section_type) || labflg) // if new sec type or a label
{
section_type = line_type;
if (labflg) //if there is a label....
{
if (pass == 1) {
if (line_type == ';') //with normal code (;)..
sss[symnum - 1].symtyp = 0; // label is enough, so no entry
else
sss[symnum - 1].symtyp = line_type; // else make entry
}
if ((pass == 2) && (line_type == '&')) {
sss[symnum - 1].symtyp = line_type;
}
} else /* no label */ if ((pass == 2) && (pc > 0xff)) {
if (symnumext >= MAXSYMS)
fatal("too many symbols\n");
sss[symnumext].symtyp = line_type;
sss[symnumext++].symadr = pc;
}
}
}
// ----------------------------------------------------------------------------
static int ssscmpadr(const ssstype * a1, const ssstype * a2) {
return (a1->symadr - a2->symadr);
}
// ----------------------------------------------------------------------------
static void list_label(int i) {
fprintf(stderr, "%s\t", sss[i].symbol);
if (sss[i].macf == MACRO) fprintf(stderr, "MACRO\n");
else fprintf(stderr, " = %X\n", sss[i].symadr);
}
// ----------------------------------------------------------------------------
static void list_label_f(int i) {
fprintf(stream2, "%s\t", sss[i].symbol);
if (sss[i].macf == MACRO)
fprintf(stream2, "MACRO\n");
else
fprintf(stream2, " = %X\n", sss[i].symadr);
}
// ----------------------------------------------------------------------------
static void operand_to_filename(char filename[]) {
int cnt = 0;
char *linptr;
switch (*txtptr++) {
case '\n':
case '\t':
fatal("filename missing\n");
break;
case ' ':
linptr = txtptr;
if (!strchr(" \t\n", *txtptr)) { /* there is an operand */
if (*linptr == '"') {
for (;;) { /* create operand[] */
operand[cnt++] = *linptr++;
if (strchr("\"\t\n", *linptr)) {
operand[cnt++] = *linptr++;
break;
}
}
} else {
while (!(strchr(" \t\n", *linptr))) { /* create operand[] */
operand[cnt++] = *linptr++;
}
}
} else
fatal("filename missing\n");
break;
}
operand[cnt] = 0;
strcpy(filename, operand);
}
// ----------------------------------------------------------------------------
static void find_operand(void) {
int cnt = 0;
char *linptr;
switch (*txtptr++) {
case '\n':
break;
case ' ':
case '\t':
linptr = txtptr;
if (!strchr(" \t\n", *txtptr)) { /* there is an operand */
if (*txtptr == '(')
txtptr++;
while (!(strchr(" \t\n", *linptr))) { /* create operand[] */
operand[cnt++] = *linptr++;
}
}
}
operand[cnt] = 0;
}
// ----------------------------------------------------------------------------
static void toxlbuf(char ch) {
char tempstr[10];
if (!orgflg) fatal("ORG value must precede this line\n");
*xlbfptr = ch;
xlbfptr++;
pc++;
if (pass == 2) {
bytcnt++;
if ((strchr(outflgs, 'L') || strchr(outflgs, 'l'))
&& !(strchr(outflgs, 'M') || strchr(outflgs, 'm'))) {
sprintf(tempstr, "%02X ", ch & 255);
if (bytcnt <= LSTBYTES)
strcat(prnlnbufbeg, tempstr);
else {
if (bytcnt % LSTBYTES == 1) {
prnlnum++;
sprintf(prnlnbuf2[prnlnum - 1], "%04X: ", pc - 1);
}
strcat(prnlnbuf2[prnlnum - 1], tempstr);
}
}
}
}
// ----------------------------------------------------------------------------
/********* chkopc returns the position (0, 1, 2,.. ) of opc in string
returns -1 if not found */
static int chkopc(const char opcstring[]) {
int cnt = 0;
const char *ptr;
if (*(opcode + 3))
return (-1);
ptr = opcstring;
while (*ptr) {
if (!memcmp(opcode, ptr, 3))
return (cnt);
ptr += 3;
cnt++;
}
return (-1);
}
// ----------------------------------------------------------------------------
static void sort_symbols(void) {
int i;
qsort(sss, symnum, sizeof(ssstype), (int (*)(const void *, const void *)) strcmp);
for (i = symnum - 1; i > 1; i--) {
if (strcmp(sss[i].symbol, sss[i - 1].symbol) == 0) {
fprintf(stderr, "\nSame label twice -\n");
list_label(i - 1);
list_label(i);
exit(1);
}
}
}
// ----------------------------------------------------------------------------
#define NEXT do { argc--;argv++; } while(0)
int main(int argc, char *argv[]) {
int braoffset;
char *includebuf;
char *txtendptr; /* pointer to end of text Buffer (=10) */
char *linptr;
char *ptr; /* temporary pointer */
int pos;
char ch;
int offset;
unsigned int operval;
int operno;
int i, intval;
char label[40];
char labelstr[40];
char opcstr[50];
char *tpsav;
int temp;
char *operptr, macdumtab[MAXDUMS][10], dumbuf[80];
int dumnum = 0, macroflg;
char macsymbol[MAXMACSYMS][10];
char *macptrtab[MAXMACSYMS];
short macnum = 0;
char *linbegsav[MAXMACLEV];
short linlensav[MAXMACLEV];
char *macargsptr[MAXMACLEV];
char *lnbfptr;
short loclabnum; /* # of labels in loclabtb */
char loclabtb[MAXLOCLABS][5];
int loclabtbpos;
int labexttab[MAXLOCLABS]; /* 0001 to 9999 */
int lclb[MAXMACLEV][MXLBS]; /* table of label nos. in present macro */
unsigned short lclbnum[MAXMACLEV];
char lab[5];
char *labptr;
short lo_fg;
short objfile_flag = 0;
short rmbflg = 0;
int rmbadr = 0;
char *txtbuf;
txtbuf = (char *)malloc(MAX_TXT_SIZ);
if (!txtbuf) fatal("Can't allocate memory for text buffer.\n");
NEXT;
while (argc--) {
if (!strcmp(*argv, "-o")) {
NEXT;
if (argc >= 0) xexfilename = *argv;
else fatal("-o needs an argument\n");
} else if (!strcmp(*argv, "-q")) {
quiet = 1;
} else if (!strcmp(*argv, "-v")) {
src_filename = NULL;
break;
} else {
src_filename = *argv;
}
argv++;
}
if (!src_filename) {
info("\n\n\txatmas2 v2.7\n"
"\tCopyright (c) 2004-2011 by Richard Jackman\n"
"\tCopyright (c) 2018 by Ivo van Poorten\n\n");
fatal("usage: xatmas2 [-q] [-v] [-o output.xex] <file.src>\n");
}
if (!((stream = fopen(src_filename, "r"))))
fatal("can't open %s\n", src_filename);
txtsiz = fread(txtbuf, 1, MAX_TXT_SIZ, stream);
fclose(stream);
if (txtsiz == MAX_TXT_SIZ) fatal("file is too long\n");
info("source size: %i bytes\n", txtsiz);
lstfilename = strdup(src_filename);
lstfilename = realloc(lstfilename, strlen(lstfilename) + 4);
strcat(lstfilename, ".lis");
if (!xexfilename) {
xexfilename = strdup(src_filename);
xexfilename = realloc(xexfilename, strlen(xexfilename) + 4);
strcat(xexfilename, ".xex");
}
/********************** Now work on buffer *********************/
txtendptr = txtbuf + txtsiz;
symnum = 0;
*outflgs = 0;
find_symad_flg = 1;
maclevel = 0;
for (i = 0; i < MAXMACLEV; i++)
lclbnum[i] = 0;
for (ptr = txtbuf; ptr < txtendptr; ptr++)
if (*ptr == '\r') {
if (*(ptr + 1) == '\n')
*ptr = ' ';
else
*ptr = '\n';
}
// ATMAS adds $FF bytes at the end of files:
while (txtendptr > txtbuf && *(txtendptr - 1) == '\377')
txtendptr--;
*txtendptr++ = '\n';
*txtendptr++ = '\n';
*txtendptr++ = '\0';
/********************** Main loop *******************/
for (pass = 1; pass <= 2; pass++)
{
sgndtbptr1 = sgndtbptr2 = sgndtb;
info("pass %d\n", pass);
linptr = txtptr = txtbuf;
xlbfptr = xlbuf;
orgflg = 0;
loclabnum = 0;
macroflg = 0;
donum = 0;
loopnum = 0;
minusnum = 0;
plusnum = 1;
skipnum = 1;
contnum = 1;
endifnum = 1;
symnumext = symnum;
include_flg = 0;
if (pass == 1) {
sss[symnum].symtyp = '#';
sss[symnum++].symadr = 0xd40f;
}
for (linnum = 0; !((*txtptr == 0) && (include_flg == 0));
txtptr = linbegptr + linlen) {
if ((*txtptr == 0) && (include_flg)) {
linnum = linnum_sav;
txtptr = txtptr_sav;
include_flg = 0;
}
if (strchr(outflgs, 'L') || strchr(outflgs, 'l')) {
if (*prnlnbufbeg || *prnlnbuf) {
if (bytcnt < LSTBYTES) {
if (!(strchr(outflgs, 'M') || strchr(outflgs, 'm'))) {
for (i = LSTBYTES - bytcnt; i > 0; i--)
strcat(prnlnbufbeg, " ");
} else
strcat(prnlnbufbeg, "\t");
}
strcat(prnlnbufbeg, prnlnbuf);
fprintf(stream2, "%s", prnlnbufbeg);
if (bytcnt > LSTBYTES) {
for (i = 1; i <= prnlnum; i++) {
fprintf(stream2, "%s\n", prnlnbuf2[i - 1]);
}
}
*prnlnbuf = '\0';
*prnlnbufbeg = '\0';
*prnlnbuf2[0] = '\0';
bytcnt = 0;
prnlnum = 0;
data_flg = 0;
for (i = 0; i < 10; i++)
mismatchln_flg[i] = 0;
}
}
if (!maclevel)
linnum++; //no change of line number if macro
*label = 0;
labflg = 0;
*operand = '\0';
linbegptr = linptr = txtptr; //set line begin to txtptr
lnbfptr = linbuf[maclevel];
linlen = (short)(strchr(linbegptr, '\n') + 1L - linbegptr);
if (!maclevel && pass == 1) { /*Test line for illegal characters */
for (cnt = 1; cnt <= linlen; cnt++) {
if (*linptr < 0) {
fatal("illegal character at line %i:\n", linnum);
}
linptr++;
}
linptr = linbegptr;
}
while (*linptr != '\n') {
/* Determine and place local label in macro */
*lnbfptr = 0;
if ((*linptr == '@') && maclevel) {
ptr = linptr - 1;
cnt = 0;
while (isalnum(*ptr)) { /* find beginning of local label */
ptr--;
cnt++;
}
if (strchr(", \n+-", *ptr)) { /*Characters which can
precede a local label! */
if (cnt > 4)
fatal("local labels cannot be longer than "
"5 characters\n");
ptr++;
labptr = lab;
while (cnt) {
cnt--;
*labptr++ = *ptr++;
}
*labptr = 0;
for (loclabtbpos = 0; loclabtbpos < loclabnum;
loclabtbpos++)
if (strcmp(loclabtb[loclabtbpos], lab) == 0)
break; /*local label found */
if (loclabtbpos == loclabnum) { // label into loclabtb
strcpy(loclabtb[loclabnum], lab);
labexttab[loclabnum++] = 0;
}
cnt = 0;
while (cnt < lclbnum[maclevel]) {
if (lclb[maclevel][cnt] == loclabtbpos)
break;
cnt++;
}
if (cnt == lclbnum[maclevel]) {
lclb[maclevel][cnt] = loclabtbpos;
labexttab[loclabtbpos]++;
lclbnum[maclevel]++;
}
/* Add four digits to label */
sprintf(lnbfptr, "%04d", labexttab[loclabtbpos]);
lnbfptr += 4;
linptr++;
}
}
/********** Dummy in macro ***********/
if ((*linptr & 128) && !macroflg) { /* inverted characters */
ptr = macargsptr[maclevel];
cnt = *linptr & 127;
while (cnt) {
while (*ptr != ',')
ptr++;
ptr++;
cnt--;
}
if (strncmp(lnbfptr - 4, "ASC ", 4) == 0) {
ch = *ptr;