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 (25 years, 1 month 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)
#	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			*/
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	cebix	1.2	case '5': cpulevel = 5; break;
135	cebix	1.1	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			}