/*
Copyright (C) 1996-1997 Id Software, Inc.

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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

*/
//
// gas to MASM source code converter
//

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define MAX_TOKENS		100
#define MAX_TOKEN_LENGTH	1024
#define LF			0x0A

typedef enum {
    NOT_WHITESPACE, WHITESPACE, TOKEN_AVAILABLE, LINE_DONE,
    FILE_DONE, PARSED_OKAY
} tokenstat;

typedef enum {
    NOSEG, DATASEG, TEXTSEG
} segtype;

int tokennum;
int inline, outline;

char *token;
char tokens[MAX_TOKENS][MAX_TOKEN_LENGTH + 1];

segtype currentseg = NOSEG;

typedef struct {
    char *text;
    char *emit;
    int numtokens;
    void (*parsefunc) (void);
} parsefield;


void errorexit(void);


//==============================================

typedef struct {
    char *text;
    char *emit;
    int len;
} regdesc;

regdesc reglist[] = {
    {"%eax", "eax", 4},
    {"%ebx", "ebx", 4},
    {"%ecx", "ecx", 4},
    {"%edx", "edx", 4},
    {"%esi", "esi", 4},
    {"%edi", "edi", 4},
    {"%ebp", "ebp", 4},
    {"%esp", "esp", 4},
    {"%ax", "ax", 3},
    {"%bx", "bx", 3},
    {"%cx", "cx", 3},
    {"%dx", "dx", 3},
    {"%si", "si", 3},
    {"%di", "di", 3},
    {"%bp", "bp", 3},
    {"%sp", "sp", 3},
    {"%al", "al", 3},
    {"%bl", "bl", 3},
    {"%cl", "cl", 3},
    {"%dl", "dl", 3},
    {"%ah", "ah", 3},
    {"%bh", "bh", 3},
    {"%ch", "ch", 3},
    {"%dh", "dh", 3},
    {"%st(0)", "st(0)", 6},
    {"%st(1)", "st(1)", 6},
    {"%st(2)", "st(2)", 6},
    {"%st(3)", "st(3)", 6},
    {"%st(4)", "st(4)", 6},
    {"%st(5)", "st(5)", 6},
    {"%st(6)", "st(6)", 6},
    {"%st(7)", "st(7)", 6},
};

int numregs = sizeof(reglist) / sizeof(reglist[0]);

//==============================================


void
emitanoperand(int tnum, char *type, int notdata)
{
    int i, index, something_outside_parens, regfound;
    int parencount;
    char *pt;
    char temp[MAX_TOKEN_LENGTH + 1];

    pt = tokens[tnum];

    if (pt[0] == '%') {
	// register
	for (i = 0; i < numregs; i++) {
	    if (!strcmpi(pt, reglist[i].text)) {
		printf("%s", reglist[i].emit);
		return;
	    }
	}

	fprintf(stderr, "Error: bad register %s\n", pt);
	errorexit();
    } else if (pt[0] == '$') {
	// constant
	if (pt[1] == '(') {
	    if ((pt[2] > '9') || (pt[2] < '0')) {
		i = 2;
		printf("offset ");

		parencount = 1;

		while ((pt[i] != ')') || (parencount > 1)) {
		    if (!pt[i]) {
			fprintf(stderr, "mismatched parens");
			errorexit();
		    }

		    if (pt[i] == ')')
			parencount--;
		    else if (pt[i] == '(')
			parencount++;

		    printf("%c", pt[i]);
		    i++;
		}
	    } else {
		pt++;

		parencount = 1;

		for (i = 1; (pt[i] != ')') || (parencount > 1); i++) {
		    if (!pt[i]) {
			fprintf(stderr, "mismatched parens");
			errorexit();
		    }

		    if (pt[i] == ')')
			parencount--;
		    else if (pt[i] == '(')
			parencount++;
		}

		pt[i] = 0;

		if ((pt[1] == '0') && ((pt[2] == 'x') || (pt[2] == 'X'))) {
		    printf("0%sh", &pt[3]);
		} else {
		    printf("%s", &pt[1]);
		}
	    }
	} else if ((pt[1] == '0') && ((pt[2] == 'x') || (pt[2] == 'X'))) {
	    printf("0%sh", &pt[3]);
	} else if ((pt[1] >= '0') && (pt[1] <= '9')) {
	    printf("%s", &pt[1]);
	} else {
	    printf("offset %s", &pt[1]);
	}
    } else if (!notdata && ((pt[0] >= '0') && (pt[0] <= '9'))) {
	pt--;

	if ((pt[1] == '0') && ((pt[2] == 'x') || (pt[2] == 'X'))) {
	    printf("0%sh", &pt[3]);
	} else {
	    printf("%s", &pt[1]);
	}
    } else {
	// must be a memory location
	strcpy(temp, type);
	index = strlen(temp);

	if (notdata)
	    temp[index++] = '[';

	something_outside_parens = 0;

	while (*pt) {
	    if (index > (MAX_TOKEN_LENGTH - 10)) {
		fprintf(stderr, "Error: operand too long %s\n", tokens[tnum]);
		errorexit();
	    }

	    if (*pt != ')') {
		if (*pt == '(') {
		    if (something_outside_parens)
			temp[index++] = '+';
		} else if (*pt == '%') {
		    regfound = 0;

		    for (i = 0; i < numregs; i++) {
			if (!strncasecmp(pt, reglist[i].text,
					 reglist[i].len)) {
			    strcpy(&temp[index], reglist[i].emit);
			    index += strlen(reglist[i].emit);
			    pt += strlen(reglist[i].text) - 1;
			    regfound = 1;
			    break;
			}
		    }

		    if (!regfound) {
			fprintf(stderr, "Error: bad register %s\n", pt);
			errorexit();
		    }
		} else if (*pt == ',') {
		    pt++;

		    if ((*pt >= '1') && (*pt <= '8')) {
			temp[index++] = '*';
			temp[index++] = *pt;
		    } else if (*pt != ')') {
			if (temp[index - 1] != '+')
			    temp[index++] = '+';
		    }
		} else {
		    something_outside_parens = 1;

		    // handle hexadecimal constants in addresses
		    if ((*pt == '0') &&
			((*(pt + 1) == 'x') || (*(pt + 1) == 'X'))) {
			pt += 2;

			do {
			    temp[index++] = *pt++;
			} while (((*pt >= '0') && (*pt <= '9')) ||
				 ((*pt >= 'a') && (*pt <= 'f')) ||
				 ((*pt >= 'A') && (*pt <= 'F')));

			pt--;
			temp[index++] = 'h';
		    } else {
			temp[index++] = *pt;
		    }
		}
	    }

	    pt++;
	}

	if (notdata)
	    temp[index++] = ']';

	temp[index] = 0;
	printf("%s", temp);
    }
}


void
datasegstart(void)
{
    if (currentseg == DATASEG)
	return;

    if (currentseg == TEXTSEG)
	printf("_TEXT ENDS\n");

    printf("_DATA SEGMENT");

    currentseg = DATASEG;
}


void
textsegstart(void)
{
    if (currentseg == TEXTSEG)
	return;

    if (currentseg == DATASEG)
	printf("_DATA ENDS\n");

    printf("_TEXT SEGMENT");

    currentseg = TEXTSEG;
}


void
emitdata(void)
{
    int i;

    for (i = 1; i < (tokennum - 1); i++)
	printf(" %s,", tokens[i]);

    printf(" %s", tokens[tokennum - 1]);
}


void
emitonedata(void)
{

    printf(" %s", tokens[1]);
}


void
emitonecalldata(void)
{
    int i, isaddr, len;

    if (tokens[1][0] == '*') {
	printf(" dword ptr[%s]", &tokens[1][1]);
    } else {
	isaddr = 0;
	len = strlen(tokens[1]);

	for (i = 0; i < len; i++) {
	    if (tokens[1][i] == '(') {
		isaddr = 1;
		break;
	    }
	}

	if (!isaddr) {
	    printf(" near ptr %s", tokens[1]);
	} else {
	    emitanoperand(1, " dword ptr", 1);
	}
    }
}


void
emitonejumpdata(void)
{
    int i, isaddr, len;

    if (tokens[1][0] == '*') {
	printf(" dword ptr[%s]", &tokens[1][1]);
    } else {
	isaddr = 0;
	len = strlen(tokens[1]);

	for (i = 0; i < len; i++) {
	    if (tokens[1][i] == '(') {
		isaddr = 1;
		break;
	    }
	}

	if (!isaddr) {
	    printf(" %s", tokens[1]);
	} else {
	    emitanoperand(1, " dword ptr", 1);
	}
    }
}


void
emitexterndef(void)
{

    printf(" %s:dword", tokens[1]);
}


void
nooperands(void)
{

}


void
emitoneoperandl(void)
{

    printf(" ");
    emitanoperand(1, "ds:dword ptr", 1);
}


void
emitoneoperandb(void)
{

    printf(" ");
    emitanoperand(1, "ds:byte ptr", 1);
}


void
emitoneoperandw(void)
{

    printf(" ");
    emitanoperand(1, "ds:word ptr", 1);
}


void
emittwooperandsl(void)
{

    printf(" ");
    emitanoperand(2, "ds:dword ptr", 1);
    printf(",");
    emitanoperand(1, "ds:dword ptr", 1);
}


void
emittwooperandsb(void)
{

    printf(" ");
    emitanoperand(2, "ds:byte ptr", 1);
    printf(",");
    emitanoperand(1, "ds:byte ptr", 1);
}


void
emittwooperandsw(void)
{

    printf(" ");
    emitanoperand(2, "ds:word ptr", 1);
    printf(",");
    emitanoperand(1, "ds:word ptr", 1);
}


void
emit_0_or_1_operandsl(void)
{

    if (tokennum == 2) {
	printf(" ");
	emitanoperand(1, "ds:dword ptr", 1);
    }
}


void
emit_1_or_2_operandsl(void)
{
    int j;

    if (tokennum == 2) {
	printf(" ");
	emitanoperand(1, "ds:dword ptr", 1);
    } else if (tokennum == 3) {
	printf(" ");
	emitanoperand(2, "ds:dword ptr", 1);
	printf(",");
	emitanoperand(1, "ds:dword ptr", 1);
    } else {

	fprintf(stderr, "Error: too many operands\n");

	for (j = 0; j < tokennum; j++)
	    fprintf(stderr, "%s\n", tokens[j]);

	fprintf(stderr, "\n");
	errorexit();
    }
}


void
emit_1_or_2_operandsl_vartext(char *str0, char *str1)
{
    int j;

    if (tokennum == 2) {
	printf(" %s ", str0);
	emitanoperand(1, "ds:dword ptr", 1);
    } else if (tokennum == 3) {
	if (!strcmpi(tokens[2], "%st(0)"))
	    printf(" %s ", str0);
	else
	    printf(" %s ", str1);

	emitanoperand(2, "ds:dword ptr", 1);
	printf(",");
	emitanoperand(1, "ds:dword ptr", 1);
    } else {

	fprintf(stderr, "Error: too many operands\n");

	for (j = 0; j < tokennum; j++)
	    fprintf(stderr, "%s\n", tokens[j]);

	fprintf(stderr, "\n");
	errorexit();
    }
}


void
special_fdivl(void)
{

    emit_1_or_2_operandsl_vartext("fdiv", "fdivr");
}


void
special_fdivpl(void)
{

    emit_1_or_2_operandsl_vartext("fdivp", "fdivrp");
}


void
special_fdivrl(void)
{

    emit_1_or_2_operandsl_vartext("fdivr", "fdiv");
}


void
special_fdivrpl(void)
{

    emit_1_or_2_operandsl_vartext("fdivrp", "fdivp");
}


void
special_fsubl(void)
{

    emit_1_or_2_operandsl_vartext("fsub", "fsubr");
}


void
special_fsubpl(void)
{

    emit_1_or_2_operandsl_vartext("fsubp", "fsubrp");
}


void
special_fsubrl(void)
{

    emit_1_or_2_operandsl_vartext("fsubr", "fsub");
}


void
special_fsubrpl(void)
{

    emit_1_or_2_operandsl_vartext("fsubrp", "fsubp");
}


void
emit_multiple_data(void)
{
    int i;

    printf(" ");

    for (i = 1; i < (tokennum - 1); i++) {
	emitanoperand(i, "", 0);
	printf(", ");
    }

    emitanoperand(i, "", 0);
}


//==============================================

parsefield parsedata[] = {
    {".align", " align", 2, emitonedata}
    ,
    {".byte", " db", -2, emit_multiple_data}
    ,
    {".data", "", 1, datasegstart}
    ,
    {".extern", " externdef", 2, emitexterndef}
    ,
    {".globl", " public", -2, emit_multiple_data}
    ,
    {".long", " dd", -2, emit_multiple_data}
    ,
    {".single", " dd", -2, emit_multiple_data}
    ,
    {".text", "", 1, textsegstart}
    ,
    {"adcl", " adc", 3, emittwooperandsl}
    ,
    {"addb", " add", 3, emittwooperandsb}
    ,
    {"addl", " add", 3, emittwooperandsl}
    ,
    {"andb", " and", 3, emittwooperandsb}
    ,
    {"andl", " and", 3, emittwooperandsl}
    ,
    {"call", " call", 2, emitonecalldata}
    ,
    {"cmpb", " cmp", 3, emittwooperandsb}
    ,
    {"cmpl", " cmp", 3, emittwooperandsl}
    ,
    {"cmpw", " cmp", 3, emittwooperandsw}
    ,
    {"decl", " dec", 2, emitoneoperandl}
    ,
    {"decw", " dec", 2, emitoneoperandw}
    ,
    {"divl", " div", 2, emitoneoperandl}
    ,
    {"fadd", " fadd", -2, emit_1_or_2_operandsl}
    ,
    {"faddp", " faddp", -2, emit_1_or_2_operandsl}
    ,
    {"faddps", " faddp", -2, emit_1_or_2_operandsl}
    ,
    {"fadds", " fadd", -2, emit_1_or_2_operandsl}
    ,
    {"fcom", " fcom", 2, emitoneoperandl}
    ,
    {"fcoms", " fcom", 2, emitoneoperandl}
    ,
    {"fcomp", " fcomp", 2, emitoneoperandl}
    ,
    {"fcomps", " fcomp", 2, emitoneoperandl}
    ,
    {"fdiv", "", -2, special_fdivl}
    ,
    {"fdivp", "", -2, special_fdivpl}
    ,
    {"fdivr", "", -2, special_fdivrl}
    ,
    {"fdivrp", "", -2, special_fdivrpl}
    ,
    {"fdivrs", "", -2, special_fdivrl}
    ,
    {"fildl", " fild", 2, emitoneoperandl}
    ,
    {"fistl", " fist", 2, emitoneoperandl}
    ,
    {"fistpl", " fistp", 2, emitoneoperandl}
    ,
    {"fld", " fld", 2, emitoneoperandl}
    ,
    {"fldcw", " fldcw", 2, emitoneoperandw}
    ,
    {"fldenv", " fldenv", 2, emitoneoperandl}
    ,
    {"flds", " fld", 2, emitoneoperandl}
    ,
    {"fmul", " fmul", -2, emit_1_or_2_operandsl}
    ,
    {"fmulp", " fmulp", -2, emit_1_or_2_operandsl}
    ,
    {"fmulps", " fmulp", -2, emit_1_or_2_operandsl}
    ,
    {"fmuls", " fmul", -2, emit_1_or_2_operandsl}
    ,
    {"fnstcw", " fnstcw", 2, emitoneoperandw}
    ,
    {"fnstenv", " fnstenv", 2, emitoneoperandl}
    ,
    {"fnstsw", " fnstsw", 2, emitoneoperandw}
    ,
    {"fstp", " fstp", 2, emitoneoperandl}
    ,
    {"fstps", " fstp", 2, emitoneoperandl}
    ,
    {"fsts", " fst", 2, emitoneoperandl}
    ,
    {"fsubr", "", -2, special_fsubrl}
    ,
    {"fsubrp", "", -2, special_fsubrpl}
    ,
    {"fsubrs", "", -2, special_fsubrl}
    ,
    {"fsub", "", -2, special_fsubl}
    ,
    {"fsubp", "", -2, special_fsubpl}
    ,
    {"fsubps", "", -2, special_fsubpl}
    ,
    {"fsubs", "", -2, special_fsubl}
    ,
    {"fxch", " fxch", 2, emitoneoperandl}
    ,
    {"imull", " imul", -2, emit_1_or_2_operandsl}
    ,
    {"incl", " inc", 2, emitoneoperandl}
    ,
    {"ja", " ja", 2, emitonedata}
    ,
    {"jae", " jae", 2, emitonedata}
    ,
    {"jb", " jb", 2, emitonedata}
    ,
    {"jbe", " jbe", 2, emitonedata}
    ,
    {"jc", " jc", 2, emitonedata}
    ,
    {"je", " je", 2, emitonedata}
    ,
    {"jg", " jg", 2, emitonedata}
    ,
    {"jge", " jge", 2, emitonedata}
    ,
    {"jl", " jl", 2, emitonedata}
    ,
    {"jle", " jle", 2, emitonedata}
    ,
    {"jmp", " jmp", 2, emitonejumpdata}
    ,
    {"jna", " jna", 2, emitonedata}
    ,
    {"jnae", " jnae", 2, emitonedata}
    ,
    {"jnb", " jnb", 2, emitonedata}
    ,
    {"jnbe", " jnbe", 2, emitonedata}
    ,
    {"jnc", " jnc", 2, emitonedata}
    ,
    {"jne", " jne", 2, emitonedata}
    ,
    {"jng", " jng", 2, emitonedata}
    ,
    {"jnge", " jnge", 2, emitonedata}
    ,
    {"jnl", " jnl", 2, emitonedata}
    ,
    {"jnle", " jnle", 2, emitonedata}
    ,
    {"jns", " jns", 2, emitonedata}
    ,
    {"jnz", " jnz", 2, emitonedata}
    ,
    {"js", " js", 2, emitonedata}
    ,
    {"jz", " jz", 2, emitonedata}
    ,
    {"leal", " lea", 3, emittwooperandsl}
    ,
    {"movb", " mov", 3, emittwooperandsb}
    ,
    {"movl", " mov", 3, emittwooperandsl}
    ,
    {"movw", " mov", 3, emittwooperandsw}
    ,
    {"negl", " neg", 2, emitoneoperandl}
    ,
    {"orb", " or", 3, emittwooperandsb}
    ,
    {"orl", " or", 3, emittwooperandsl}
    ,
    {"popl", " pop", 2, emitoneoperandl}
    ,
    {"pushl", " push", 2, emitoneoperandl}
    ,
    {"ret", " ret", -1, emit_0_or_1_operandsl}
    ,
    {"rorl", " ror", 3, emittwooperandsl}
    ,
    {"sarl", " sar", 3, emittwooperandsl}
    ,
    {"sbbl", " sbb", 3, emittwooperandsl}
    ,
    {"shll", " shl", 3, emittwooperandsl}
    ,
    {"shrl", " shr", 3, emittwooperandsl}
    ,
    {"subl", " sub", 3, emittwooperandsl}
    ,
    {"testb", " test", 3, emittwooperandsb}
    ,
    {"testl", " test", 3, emittwooperandsl}
    ,
    {"xorb", " xor", 3, emittwooperandsb}
    ,
    {"xorl", " xor", 3, emittwooperandsl}
    ,
};

int numparse = sizeof(parsedata) / sizeof(parsedata[0]);

//==============================================

void
errorexit(void)
{
    fprintf(stderr, "In line: %d, out line: %d\n", inline, outline);
    exit(1);
}


tokenstat
whitespace(char c)
{
    if (c == '\n')
	return LINE_DONE;

    if ((c <= ' ') || (c > 127) || (c == ',')) {
	return WHITESPACE;
    }

    return NOT_WHITESPACE;
}


int
gettoken(void)
{
    char c;
    int count, parencount;
    tokenstat stat;

    do {
	if ((c = getchar()) == EOF)
	    return FILE_DONE;

	if ((stat = whitespace(c)) == LINE_DONE)
	    return LINE_DONE;
    } while (stat == WHITESPACE);

    token[0] = c;
    count = 1;

    if (c == '~') {
	count--;
	token[count++] = 'n';
	token[count++] = 'o';
	token[count++] = 't';
	token[count++] = ' ';
    }

    if (c == '(') {
	do {
	    if ((c = getchar()) == EOF) {
		fprintf(stderr, "EOF in middle of parentheses\n");
		errorexit();
	    }

	    token[count++] = c;

	} while (c != ')');
    }

    for (;;) {
	if ((c = getchar()) == EOF) {
	    token[count] = 0;
	    return TOKEN_AVAILABLE;
	}

	if (whitespace(c) == LINE_DONE) {
	    if (ungetc(c, stdin) == EOF) {
		fprintf(stderr, "Couldn't unget character\n");
		errorexit();
	    }

	    token[count] = 0;
	    return TOKEN_AVAILABLE;
	}

	if (whitespace(c) == WHITESPACE) {
	    token[count] = 0;
	    return TOKEN_AVAILABLE;
	}

	if (count >= MAX_TOKEN_LENGTH) {
	    fprintf(stderr, "Error: token too long\n");
	    errorexit();
	}

	token[count++] = c;

	if (c == '~') {
	    count--;
	    token[count++] = 'n';
	    token[count++] = 'o';
	    token[count++] = 't';
	    token[count++] = ' ';
	} else if (c == '(') {
	    parencount = 1;

	    do {
		if ((c = getchar()) == EOF) {
		    fprintf(stderr, "EOF in middle of parentheses\n");
		    errorexit();
		}

		if (c == '(')
		    parencount++;
		else if (c == ')')
		    parencount--;

		if (c == '~') {
		    token[count++] = 'n';
		    token[count++] = 'o';
		    token[count++] = 't';
		    token[count++] = ' ';
		} else {
		    token[count++] = c;
		}

	    } while ((c != ')') || (parencount > 0));
	}
    }
}


tokenstat
parseline(void)
{
    tokenstat stat;
    int i, j, firsttoken, labelfound;
    int mnemfound;

    firsttoken = 1;
    tokennum = 0;
    labelfound = 0;

    for (;;) {
	token = tokens[tokennum];
	stat = gettoken();

	switch (stat) {
	case FILE_DONE:
	    return FILE_DONE;

	case LINE_DONE:
	    if (!firsttoken && tokennum) {

		mnemfound = 0;

		for (i = 0; i < numparse; i++) {
		    if (!strcmpi(tokens[0], parsedata[i].text)) {
			if (((parsedata[i].numtokens > 0) &&
			     (parsedata[i].numtokens != tokennum)) ||
			    ((parsedata[i].numtokens < 0) &&
			     (tokennum < -parsedata[i].numtokens))) {
			    fprintf(stderr, "mismatched number of tokens\n");

			    for (j = 0; j < tokennum; j++)
				fprintf(stderr, "%s\n", tokens[j]);

			    fprintf(stderr, "\n");
			    errorexit();
			}

			printf("%s", parsedata[i].emit);
			(*parsedata[i].parsefunc) ();

			mnemfound = 1;
			break;
		    }
		}

		if (!mnemfound) {
		    fprintf(stderr, "Error: unknown mnemonic\n");

		    for (j = 0; j < tokennum; j++)
			fprintf(stderr, "%s\n", tokens[j]);

		    fprintf(stderr, "\n");
		    errorexit();
		}
	    }

	    if (!firsttoken) {
		if ((currentseg == DATASEG) && labelfound && !tokennum)
		    printf(":\n");
		else
		    printf("\n");

		outline++;
	    }
	    return PARSED_OKAY;

	case TOKEN_AVAILABLE:
	    if (firsttoken) {
		if (token[strlen(token) - 1] == ':') {
		    labelfound = 1;

		    if (currentseg == DATASEG) {
			token[strlen(token) - 1] = 0;
			printf("%s", token);
		    } else if (currentseg == TEXTSEG) {
			printf("%s", token);
		    } else {
			fprintf(stderr, "Error: not in segment block\n");
			errorexit();
		    }

		    firsttoken = 0;
		    break;
		}
	    }

	    firsttoken = 0;

	    if (tokennum >= MAX_TOKENS) {
		fprintf(stderr, "Error: too many tokens\n");
		exit(0);
	    }

	    tokennum++;

	    break;

	default:
	    fprintf(stderr, "Error: unknown tokenstat %d\n", stat);
	    exit(0);
	}
    }
}


void
main(int argc, char **argv)
{
    tokenstat stat;

    printf(" .386P\n" " .model FLAT\n");
    inline = 1;
    outline = 3;

    for (;;) {
	stat = parseline();
	inline++;

	switch (stat) {
	case FILE_DONE:
	    if (currentseg == TEXTSEG)
		printf("_TEXT ENDS\n");
	    else if (currentseg == DATASEG)
		printf("_DATA ENDS\n");

	    printf(" END\n");
	    exit(0);

	case PARSED_OKAY:
	    break;

	default:
	    fprintf(stderr, "Error: unknown tokenstat %d\n", stat);
	    exit(0);
	}
    }
}
