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, 2 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).
#	Content
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	*
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	*/
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	#ifdef WIN32
76	tablef = fopen(argc > 1 ? argv[1] : "table68k","r");
77	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	char cflow;
94
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	case 'E': currbit = bitE; break;
126	case 'p': currbit = bitp; break;
127	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	case '5': cpulevel = 5; break;
152	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	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	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	printf("}, %d, %d, \"%s\"}", cflow, sduse, opstrp);
271	}
272	}
273	printf("};\nint n_defs68k = %d;\n", no_insns);
274	fflush(stdout);
275	return 0;
276	}