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
 */

#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");
#if 0
    tablef = fopen("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];

        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;
             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 '/': flagset[i] = fa_isjmp; 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_isjmp; break;
             case '+': flaguse[i] = fu_maybecc; break;
             case '?': flaguse[i] = fu_unknown; break;
             default: flaguse[i] = fu_used; break;
            }
        }

        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, \"%s\"}", sduse, opstrp);
        }
    }
    printf("};\nint n_defs68k = %d;\n", no_insns);
    return 0;
}
Revision:	1.3
Committed:	1999-11-03T10:56:34Z (24 years, 8 months ago) by cebix
Content type:	text/plain
Branch:	MAIN
CVS Tags:	snapshot-13072000, snapshot-22121999, snapshot-17022001, release-0_8-1
Changes since 1.2:	+0 -1 lines
Log Message:	- imported UAE CPU 0.8.10 changes - new utility functions Mac_memset, Mac2Host_memcpy, Host2Mac_memcpu and Mac2Mac_memcpy - extfs.cpp: fixed bug in fs_rename() and fs_cat_move() (auxiliary IOParam block was not in Mac address space) - some provisions for using UAE CPU compiler (doesn't work yet)
#	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
9	#include <assert.h>
10	#include <ctype.h>
11	#include <stdio.h>
12
13	#include "sysdeps.h"
14	#include "readcpu.h"
15
16	static FILE *tablef;
17	static int nextch = 0;
18
19	static void getnextch(void)
20	{
21	do {
22	nextch = fgetc(tablef);
23	if (nextch == '%') {
24	do {
25	nextch = fgetc(tablef);
26	} while (nextch != EOF && nextch != '\n');
27	}
28	} while (nextch != EOF && isspace(nextch));
29	}
30
31	static int nextchtohex(void)
32	{
33	switch (isupper (nextch) ? tolower (nextch) : nextch) {
34	case '0': return 0;
35	case '1': return 1;
36	case '2': return 2;
37	case '3': return 3;
38	case '4': return 4;
39	case '5': return 5;
40	case '6': return 6;
41	case '7': return 7;
42	case '8': return 8;
43	case '9': return 9;
44	case 'a': return 10;
45	case 'b': return 11;
46	case 'c': return 12;
47	case 'd': return 13;
48	case 'e': return 14;
49	case 'f': return 15;
50	default: abort();
51	}
52	}
53
54	int main(int argc, char **argv)
55	{
56	int no_insns = 0;
57
58	printf ("#include \"sysdeps.h\"\n");
59	printf ("#include \"readcpu.h\"\n");
60	printf ("struct instr_def defs68k[] = {\n");
61	#if 0
62	tablef = fopen("table68k","r");
63	if (tablef == NULL) {
64	fprintf(stderr, "table68k not found\n");
65	exit(1);
66	}
67	#else
68	tablef = stdin;
69	#endif
70	getnextch();
71	while (nextch != EOF) {
72	int cpulevel, plevel, sduse;
73	int i;
74
75	char patbits[16];
76	char opcstr[256];
77	int bitpos[16];
78	int flagset[5], flaguse[5];
79
80	unsigned int bitmask,bitpattern;
81	int n_variable;
82
83	n_variable = 0;
84	bitmask = bitpattern = 0;
85	memset (bitpos, 0, sizeof(bitpos));
86	for(i=0; i<16; i++) {
87	int currbit;
88	bitmask <<= 1;
89	bitpattern <<= 1;
90
91	switch (nextch) {
92	case '0': currbit = bit0; bitmask \|= 1; break;
93	case '1': currbit = bit1; bitmask \|= 1; bitpattern \|= 1; break;
94	case 'c': currbit = bitc; break;
95	case 'C': currbit = bitC; break;
96	case 'f': currbit = bitf; break;
97	case 'i': currbit = biti; break;
98	case 'I': currbit = bitI; break;
99	case 'j': currbit = bitj; break;
100	case 'J': currbit = bitJ; break;
101	case 'k': currbit = bitk; break;
102	case 'K': currbit = bitK; break;
103	case 's': currbit = bits; break;
104	case 'S': currbit = bitS; break;
105	case 'd': currbit = bitd; break;
106	case 'D': currbit = bitD; break;
107	case 'r': currbit = bitr; break;
108	case 'R': currbit = bitR; break;
109	case 'z': currbit = bitz; break;
110	default: abort();
111	}
112	if (!(bitmask & 1)) {
113	bitpos[n_variable] = currbit;
114	n_variable++;
115	}
116
117	if (nextch == '0' \|\| nextch == '1')
118	bitmask \|= 1;
119	if (nextch == '1')
120	bitpattern \|= 1;
121	patbits[i] = nextch;
122	getnextch();
123	}
124
125	while (isspace(nextch) \|\| nextch == ':') /* Get CPU and privilege level */
126	getnextch();
127
128	switch (nextch) {
129	case '0': cpulevel = 0; break;
130	case '1': cpulevel = 1; break;
131	case '2': cpulevel = 2; break;
132	case '3': cpulevel = 3; break;
133	case '4': cpulevel = 4; break;
134	case '5': cpulevel = 5; break;
135	default: abort();
136	}
137	getnextch();
138
139	switch (nextch) {
140	case '0': plevel = 0; break;
141	case '1': plevel = 1; break;
142	case '2': plevel = 2; break;
143	case '3': plevel = 3; break;
144	default: abort();
145	}
146	getnextch();
147
148	while (isspace(nextch)) /* Get flag set information */
149	getnextch();
150
151	if (nextch != ':')
152	abort();
153
154	for(i = 0; i < 5; i++) {
155	getnextch();
156	switch(nextch){
157	case '-': flagset[i] = fa_unset; break;
158	case '/': flagset[i] = fa_isjmp; break;
159	case '0': flagset[i] = fa_zero; break;
160	case '1': flagset[i] = fa_one; break;
161	case 'x': flagset[i] = fa_dontcare; break;
162	case '?': flagset[i] = fa_unknown; break;
163	default: flagset[i] = fa_set; break;
164	}
165	}
166
167	getnextch();
168	while (isspace(nextch))
169	getnextch();
170
171	if (nextch != ':') /* Get flag used information */
172	abort();
173
174	for(i = 0; i < 5; i++) {
175	getnextch();
176	switch(nextch){
177	case '-': flaguse[i] = fu_unused; break;
178	case '/': flaguse[i] = fu_isjmp; break;
179	case '+': flaguse[i] = fu_maybecc; break;
180	case '?': flaguse[i] = fu_unknown; break;
181	default: flaguse[i] = fu_used; break;
182	}
183	}
184
185	getnextch();
186	while (isspace(nextch))
187	getnextch();
188
189	if (nextch != ':') /* Get source/dest usage information */
190	abort();
191
192	getnextch();
193	sduse = nextchtohex() << 4;
194	getnextch();
195	sduse \|= nextchtohex();
196
197	getnextch();
198	while (isspace(nextch))
199	getnextch();
200
201	if (nextch != ':')
202	abort();
203
204	fgets(opcstr, 250, tablef);
205	getnextch();
206	{
207	int j;
208	/* Remove superfluous spaces from the string */
209	char opstrp = opcstr, osendp;
210	int slen = 0;
211
212	while (isspace(*opstrp))
213	opstrp++;
214
215	osendp = opstrp;
216	while (*osendp) {
217	if (!isspace (*osendp))
218	slen = osendp - opstrp + 1;
219	osendp++;
220	}
221	opstrp[slen] = 0;
222
223	if (no_insns > 0)
224	printf(",\n");
225	no_insns++;
226	printf("{ %d, %d, {", bitpattern, n_variable);
227	for (j = 0; j < 16; j++) {
228	printf("%d", bitpos[j]);
229	if (j < 15)
230	printf(",");
231	}
232	printf ("}, %d, %d, %d, { ", bitmask, cpulevel, plevel);
233	for(i = 0; i < 5; i++) {
234	printf("{ %d, %d }%c ", flaguse[i], flagset[i], i == 4 ? ' ' : ',');
235	}
236	printf("}, %d, \"%s\"}", sduse, opstrp);
237	}
238	}
239	printf("};\nint n_defs68k = %d;\n", no_insns);
240	return 0;
241	}