src/uae_cpu/build68k.c

/*
 * UAE - The Un*x Amiga Emulator
 *
 * Read 68000 CPU specs from file "table68k" and build table68k.c
 *
 * Copyright 1995,1996 Bernd Schmidt
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <assert.h>
#include <ctype.h>
#include <stdio.h>

#include "sysdeps.h"
#include "readcpu.h"

static FILE *tablef;
static int nextch = 0;

static void getnextch(void)
{
    do {
        nextch = fgetc(tablef);
        if (nextch == '%') {
            do {
                nextch = fgetc(tablef);
            } while (nextch != EOF && nextch != '\n');
        }
    } while (nextch != EOF && isspace(nextch));
}

static int nextchtohex(void)
{
    switch (isupper (nextch) ? tolower (nextch) : nextch) {
     case '0': return 0;
     case '1': return 1;
     case '2': return 2;
     case '3': return 3;
     case '4': return 4;
     case '5': return 5;
     case '6': return 6;
     case '7': return 7;
     case '8': return 8;
     case '9': return 9;
     case 'a': return 10;
     case 'b': return 11;
     case 'c': return 12;
     case 'd': return 13;
     case 'e': return 14;
     case 'f': return 15;
     default: abort();
    }
}

int main(int argc, char **argv)
{
    int no_insns = 0;

    printf ("#include \"sysdeps.h\"\n");
    printf ("#include \"readcpu.h\"\n");
    printf ("struct instr_def defs68k[] = {\n");
#ifdef WIN32
    tablef = fopen(argc > 1 ? argv[1] : "table68k","r");
    if (tablef == NULL) {
        fprintf(stderr, "table68k not found\n");
        exit(1);
    }
#else
    tablef = stdin;
#endif
    getnextch();
    while (nextch != EOF) {
        int cpulevel, plevel, sduse;
        int i;

        char patbits[16];
        char opcstr[256];
        int bitpos[16];
        int flagset[5], flaguse[5];
        char cflow;

        unsigned int bitmask,bitpattern;
        int n_variable;

        n_variable = 0;
        bitmask = bitpattern = 0;
        memset (bitpos, 0, sizeof(bitpos));
        for(i=0; i<16; i++) {
            int currbit;
            bitmask <<= 1;
            bitpattern <<= 1;

            switch (nextch) {
             case '0': currbit = bit0; bitmask |= 1; break;
             case '1': currbit = bit1; bitmask |= 1; bitpattern |= 1; break;
             case 'c': currbit = bitc; break;
             case 'C': currbit = bitC; break;
             case 'f': currbit = bitf; break;
             case 'i': currbit = biti; break;
             case 'I': currbit = bitI; break;
             case 'j': currbit = bitj; break;
             case 'J': currbit = bitJ; break;
             case 'k': currbit = bitk; break;
             case 'K': currbit = bitK; break;
             case 's': currbit = bits; break;
             case 'S': currbit = bitS; break;
             case 'd': currbit = bitd; break;
             case 'D': currbit = bitD; break;
             case 'r': currbit = bitr; break;
             case 'R': currbit = bitR; break;
             case 'z': currbit = bitz; break;
                 case 'E': currbit = bitE; break;
                 case 'p': currbit = bitp; break;
             default: abort();
            }
            if (!(bitmask & 1)) {
                bitpos[n_variable] = currbit;
                n_variable++;
            }

            if (nextch == '0' || nextch == '1')
                bitmask |= 1;
            if (nextch == '1')
                bitpattern |= 1;
            patbits[i] = nextch;
            getnextch();
        }

        while (isspace(nextch) || nextch == ':') /* Get CPU and privilege level */
            getnextch();

        switch (nextch) {
         case '0': cpulevel = 0; break;
         case '1': cpulevel = 1; break;
         case '2': cpulevel = 2; break;
         case '3': cpulevel = 3; break;
         case '4': cpulevel = 4; break;
         case '5': cpulevel = 5; break;
         default: abort();
        }
        getnextch();

        switch (nextch) {
         case '0': plevel = 0; break;
         case '1': plevel = 1; break;
         case '2': plevel = 2; break;
         case '3': plevel = 3; break;
         default: abort();
        }
        getnextch();

        while (isspace(nextch))                   /* Get flag set information */
            getnextch();

        if (nextch != ':')
            abort();

        for(i = 0; i < 5; i++) {
            getnextch();
            switch(nextch){
             case '-': flagset[i] = fa_unset; break;
             case '0': flagset[i] = fa_zero; break;
             case '1': flagset[i] = fa_one; break;
             case 'x': flagset[i] = fa_dontcare; break;
             case '?': flagset[i] = fa_unknown; break;
             default: flagset[i] = fa_set; break;
            }
        }

        getnextch();
        while (isspace(nextch))
            getnextch();

        if (nextch != ':')                        /* Get flag used information */
            abort();

        for(i = 0; i < 5; i++) {
            getnextch();
            switch(nextch){
             case '-': flaguse[i] = fu_unused; break;
             case '?': flaguse[i] = fu_unknown; break;
             default: flaguse[i] = fu_used; break;
            }
        }

        getnextch();
        while (isspace(nextch))
            getnextch();

        if (nextch != ':')                        /* Get control flow information */
            abort();
        
        cflow = 0;
        for(i = 0; i < 2; i++) {
                getnextch();
                switch(nextch){
                 case '-': break;
                 case 'R': cflow |= fl_return; break;
                 case 'B': cflow |= fl_branch; break;
                 case 'J': cflow |= fl_jump; break;
                 case 'T': cflow |= fl_trap; break;
                 default: abort();
                }
        }
        
        getnextch();
        while (isspace(nextch))
            getnextch();

        if (nextch != ':')                        /* Get source/dest usage information */
            abort();

        getnextch();
        sduse = nextchtohex() << 4;
        getnextch();
        sduse |= nextchtohex();

        getnextch();
        while (isspace(nextch))
            getnextch();

        if (nextch != ':')
            abort();

        fgets(opcstr, 250, tablef);
        getnextch();
        {
            int j;
            /* Remove superfluous spaces from the string */
            char *opstrp = opcstr, *osendp;
            int slen = 0;

            while (isspace(*opstrp))
                opstrp++;

            osendp = opstrp;
            while (*osendp) {
                if (!isspace (*osendp))
                    slen = osendp - opstrp + 1;
                osendp++;
            }
            opstrp[slen] = 0;

            if (no_insns > 0)
                printf(",\n");
            no_insns++;
            printf("{ %d, %d, {", bitpattern, n_variable);
            for (j = 0; j < 16; j++) {
                printf("%d", bitpos[j]);
                if (j < 15)
                    printf(",");
            }
            printf ("}, %d, %d, %d, { ", bitmask, cpulevel, plevel);
            for(i = 0; i < 5; i++) {
                printf("{ %d, %d }%c ", flaguse[i], flagset[i], i == 4 ? ' ' : ',');
            }
            printf("}, %d, %d, \"%s\"}", cflow, sduse, opstrp);
        }
    }
    printf("};\nint n_defs68k = %d;\n", no_insns);
    fflush(stdout);
    return 0;
}
Revision:	1.7
Committed:	2012-03-30T01:25:46Z (12 years, 4 months ago) by asvitkine
Content type:	text/plain
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.6:	+14 -0 lines
Log Message:	Add GPLv2 notices to files from UAE Amiga Emulator, as retrieved from the COPYING file of uae-0.8.29, retrieved from http://www.amigaemulator.org/ via uae-0.8.29.tar.bz2 (MD5 = 54abbabb5e8580b679c52de019141d61).
#	User	Rev	Content
1	cebix	1.1	/*
2			* UAE - The Un*x Amiga Emulator
3			*
4			* Read 68000 CPU specs from file "table68k" and build table68k.c
5			*
6			* Copyright 1995,1996 Bernd Schmidt
7	asvitkine	1.7	*
8			* This program is free software; you can redistribute it and/or modify
9			* it under the terms of the GNU General Public License as published by
10			* the Free Software Foundation; either version 2 of the License, or
11			* (at your option) any later version.
12			*
13			* This program is distributed in the hope that it will be useful,
14			* but WITHOUT ANY WARRANTY; without even the implied warranty of
15			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16			* GNU General Public License for more details.
17			*
18			* You should have received a copy of the GNU General Public License
19			* along with this program; if not, write to the Free Software
20			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21	cebix	1.1	*/
22
23			#include <assert.h>
24			#include <ctype.h>
25			#include <stdio.h>
26
27			#include "sysdeps.h"
28			#include "readcpu.h"
29
30			static FILE *tablef;
31			static int nextch = 0;
32
33			static void getnextch(void)
34			{
35			do {
36			nextch = fgetc(tablef);
37			if (nextch == '%') {
38			do {
39			nextch = fgetc(tablef);
40			} while (nextch != EOF && nextch != '\n');
41			}
42			} while (nextch != EOF && isspace(nextch));
43			}
44
45			static int nextchtohex(void)
46			{
47			switch (isupper (nextch) ? tolower (nextch) : nextch) {
48			case '0': return 0;
49			case '1': return 1;
50			case '2': return 2;
51			case '3': return 3;
52			case '4': return 4;
53			case '5': return 5;
54			case '6': return 6;
55			case '7': return 7;
56			case '8': return 8;
57			case '9': return 9;
58			case 'a': return 10;
59			case 'b': return 11;
60			case 'c': return 12;
61			case 'd': return 13;
62			case 'e': return 14;
63			case 'f': return 15;
64			default: abort();
65			}
66			}
67
68			int main(int argc, char **argv)
69			{
70			int no_insns = 0;
71
72			printf ("#include \"sysdeps.h\"\n");
73			printf ("#include \"readcpu.h\"\n");
74			printf ("struct instr_def defs68k[] = {\n");
75	gbeauche	1.5	#ifdef WIN32
76			tablef = fopen(argc > 1 ? argv[1] : "table68k","r");
77	cebix	1.1	if (tablef == NULL) {
78			fprintf(stderr, "table68k not found\n");
79			exit(1);
80			}
81			#else
82			tablef = stdin;
83			#endif
84			getnextch();
85			while (nextch != EOF) {
86			int cpulevel, plevel, sduse;
87			int i;
88
89			char patbits[16];
90			char opcstr[256];
91			int bitpos[16];
92			int flagset[5], flaguse[5];
93	gbeauche	1.5	char cflow;
94	cebix	1.1
95			unsigned int bitmask,bitpattern;
96			int n_variable;
97
98			n_variable = 0;
99			bitmask = bitpattern = 0;
100			memset (bitpos, 0, sizeof(bitpos));
101			for(i=0; i<16; i++) {
102			int currbit;
103			bitmask <<= 1;
104			bitpattern <<= 1;
105
106			switch (nextch) {
107			case '0': currbit = bit0; bitmask \|= 1; break;
108			case '1': currbit = bit1; bitmask \|= 1; bitpattern \|= 1; break;
109			case 'c': currbit = bitc; break;
110			case 'C': currbit = bitC; break;
111			case 'f': currbit = bitf; break;
112			case 'i': currbit = biti; break;
113			case 'I': currbit = bitI; break;
114			case 'j': currbit = bitj; break;
115			case 'J': currbit = bitJ; break;
116			case 'k': currbit = bitk; break;
117			case 'K': currbit = bitK; break;
118			case 's': currbit = bits; break;
119			case 'S': currbit = bitS; break;
120			case 'd': currbit = bitd; break;
121			case 'D': currbit = bitD; break;
122			case 'r': currbit = bitr; break;
123			case 'R': currbit = bitR; break;
124			case 'z': currbit = bitz; break;
125	gbeauche	1.5	case 'E': currbit = bitE; break;
126	gbeauche	1.4	case 'p': currbit = bitp; break;
127	cebix	1.1	default: abort();
128			}
129			if (!(bitmask & 1)) {
130			bitpos[n_variable] = currbit;
131			n_variable++;
132			}
133
134			if (nextch == '0' \|\| nextch == '1')
135			bitmask \|= 1;
136			if (nextch == '1')
137			bitpattern \|= 1;
138			patbits[i] = nextch;
139			getnextch();
140			}
141
142			while (isspace(nextch) \|\| nextch == ':') /* Get CPU and privilege level */
143			getnextch();
144
145			switch (nextch) {
146			case '0': cpulevel = 0; break;
147			case '1': cpulevel = 1; break;
148			case '2': cpulevel = 2; break;
149			case '3': cpulevel = 3; break;
150			case '4': cpulevel = 4; break;
151	cebix	1.2	case '5': cpulevel = 5; break;
152	cebix	1.1	default: abort();
153			}
154			getnextch();
155
156			switch (nextch) {
157			case '0': plevel = 0; break;
158			case '1': plevel = 1; break;
159			case '2': plevel = 2; break;
160			case '3': plevel = 3; break;
161			default: abort();
162			}
163			getnextch();
164
165			while (isspace(nextch)) /* Get flag set information */
166			getnextch();
167
168			if (nextch != ':')
169			abort();
170
171			for(i = 0; i < 5; i++) {
172			getnextch();
173			switch(nextch){
174			case '-': flagset[i] = fa_unset; break;
175			case '0': flagset[i] = fa_zero; break;
176			case '1': flagset[i] = fa_one; break;
177			case 'x': flagset[i] = fa_dontcare; break;
178			case '?': flagset[i] = fa_unknown; break;
179			default: flagset[i] = fa_set; break;
180			}
181			}
182
183			getnextch();
184			while (isspace(nextch))
185			getnextch();
186
187			if (nextch != ':') /* Get flag used information */
188			abort();
189
190			for(i = 0; i < 5; i++) {
191			getnextch();
192			switch(nextch){
193			case '-': flaguse[i] = fu_unused; break;
194			case '?': flaguse[i] = fu_unknown; break;
195			default: flaguse[i] = fu_used; break;
196			}
197			}
198
199			getnextch();
200			while (isspace(nextch))
201			getnextch();
202
203	gbeauche	1.5	if (nextch != ':') /* Get control flow information */
204			abort();
205
206			cflow = 0;
207			for(i = 0; i < 2; i++) {
208			getnextch();
209			switch(nextch){
210			case '-': break;
211			case 'R': cflow \|= fl_return; break;
212			case 'B': cflow \|= fl_branch; break;
213			case 'J': cflow \|= fl_jump; break;
214			case 'T': cflow \|= fl_trap; break;
215			default: abort();
216			}
217			}
218
219			getnextch();
220			while (isspace(nextch))
221			getnextch();
222
223	cebix	1.1	if (nextch != ':') /* Get source/dest usage information */
224			abort();
225
226			getnextch();
227			sduse = nextchtohex() << 4;
228			getnextch();
229			sduse \|= nextchtohex();
230
231			getnextch();
232			while (isspace(nextch))
233			getnextch();
234
235			if (nextch != ':')
236			abort();
237
238			fgets(opcstr, 250, tablef);
239			getnextch();
240			{
241			int j;
242			/* Remove superfluous spaces from the string */
243			char opstrp = opcstr, osendp;
244			int slen = 0;
245
246			while (isspace(*opstrp))
247			opstrp++;
248
249			osendp = opstrp;
250			while (*osendp) {
251			if (!isspace (*osendp))
252			slen = osendp - opstrp + 1;
253			osendp++;
254			}
255			opstrp[slen] = 0;
256
257			if (no_insns > 0)
258			printf(",\n");
259			no_insns++;
260			printf("{ %d, %d, {", bitpattern, n_variable);
261			for (j = 0; j < 16; j++) {
262			printf("%d", bitpos[j]);
263			if (j < 15)
264			printf(",");
265			}
266			printf ("}, %d, %d, %d, { ", bitmask, cpulevel, plevel);
267			for(i = 0; i < 5; i++) {
268			printf("{ %d, %d }%c ", flaguse[i], flagset[i], i == 4 ? ' ' : ',');
269			}
270	gbeauche	1.5	printf("}, %d, %d, \"%s\"}", cflow, sduse, opstrp);
271	cebix	1.1	}
272			}
273			printf("};\nint n_defs68k = %d;\n", no_insns);
274	gbeauche	1.6	fflush(stdout);
275	cebix	1.1	return 0;
276			}