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1.1 root 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:
1.1.1.3 root 9: #include "sysconfig.h"
10: #include "sysdeps.h"
11:
1.1 root 12: #include <stdlib.h>
13: #include <string.h>
14: #include <assert.h>
15: #include <ctype.h>
16:
17: #define TCHAR char
18:
19: #include "readcpu.h"
20:
21: static FILE *tablef;
22: static int nextch = 0;
23:
24: static void getnextch(void)
25: {
26: do {
27: nextch = fgetc(tablef);
28: if (nextch == '%') {
29: do {
30: nextch = fgetc(tablef);
31: } while (nextch != EOF && nextch != '\n');
32: }
33: } while (nextch != EOF && isspace(nextch));
34: }
35:
36: static int nextchtohex(void)
37: {
38: switch (isupper (nextch) ? tolower (nextch) : nextch) {
39: case '0': return 0;
40: case '1': return 1;
41: case '2': return 2;
42: case '3': return 3;
43: case '4': return 4;
44: case '5': return 5;
45: case '6': return 6;
46: case '7': return 7;
47: case '8': return 8;
48: case '9': return 9;
49: case 'a': return 10;
50: case 'b': return 11;
51: case 'c': return 12;
52: case 'd': return 13;
53: case 'e': return 14;
54: case 'f': return 15;
55: default: abort();
56: }
57: }
58:
59: int main(int argc, char **argv)
60: {
61: int no_insns = 0;
62:
63: printf ("#include \"sysconfig.h\"\n");
64: printf ("#include \"sysdeps.h\"\n");
65: printf ("#include \"readcpu.h\"\n");
66: printf ("struct instr_def defs68k[] = {\n");
67: #if 0
68: tablef = fopen("table68k","r");
69: if (tablef == NULL) {
70: fprintf(stderr, "table68k not found\n");
71: exit(1);
72: }
73: #else
74: tablef = stdin;
75: #endif
76: getnextch();
77: while (nextch != EOF) {
1.1.1.3 root 78: int cpulevel, uncpulevel, plevel, sduse;
79: int i;
1.1 root 80:
1.1.1.3 root 81: char opcstr[256];
82: int bitpos[16];
83: int flagset[5], flaguse[5];
84:
85: unsigned int bitmask,bitpattern;
86: int n_variable;
87:
88: int head = 0, tail = 0, clocks = 0, fetchmode = 0;
89:
90: n_variable = 0;
91: bitmask = bitpattern = 0;
92: memset (bitpos, 0, sizeof(bitpos));
93: for(i=0; i<16; i++) {
94: int currbit;
95: bitmask <<= 1;
96: bitpattern <<= 1;
97:
98: switch (nextch) {
99: case '0': currbit = bit0; bitmask |= 1; break;
100: case '1': currbit = bit1; bitmask |= 1; bitpattern |= 1; break;
101: case 'c': currbit = bitc; break;
102: case 'C': currbit = bitC; break;
103: case 'f': currbit = bitf; break;
104: case 'i': currbit = biti; break;
105: case 'I': currbit = bitI; break;
106: case 'j': currbit = bitj; break;
107: case 'J': currbit = bitJ; break;
108: case 'k': currbit = bitk; break;
109: case 'K': currbit = bitK; break;
110: case 's': currbit = bits; break;
111: case 'S': currbit = bitS; break;
112: case 'd': currbit = bitd; break;
113: case 'D': currbit = bitD; break;
114: case 'r': currbit = bitr; break;
115: case 'R': currbit = bitR; break;
116: case 'z': currbit = bitz; break;
117: case 'p': currbit = bitp; break;
118: default: abort();
119: }
120: if (!(bitmask & 1)) {
121: bitpos[n_variable] = currbit;
122: n_variable++;
123: }
124:
125: if (nextch == '0' || nextch == '1')
126: bitmask |= 1;
127: if (nextch == '1')
128: bitpattern |= 1;
129: getnextch();
130: }
131:
132: while (isspace(nextch) || nextch == ':') /* Get CPU level, unimplemented level, and privilege level */
133: getnextch();
134:
135: switch (nextch) {
136: case '0': cpulevel = 0; break;
137: case '1': cpulevel = 1; break;
138: case '2': cpulevel = 2; break;
139: case '3': cpulevel = 3; break;
140: case '4': cpulevel = 4; break;
141: case '5': cpulevel = 5; break;
142: case '6': cpulevel = 6; break;
143: case '7': cpulevel = 7; break;
144: default: abort();
145: }
146: getnextch();
147:
148: switch (nextch) {
149: case '0': uncpulevel = 0; break;
150: case '1': uncpulevel = 1; break;
151: case '2': uncpulevel = 2; break;
152: case '3': uncpulevel = 3; break;
153: case '4': uncpulevel = 4; break;
154: case '5': uncpulevel = 5; break;
155: case '6': uncpulevel = 6; break;
156: case '7': uncpulevel = 7; break;
157: default: abort();
158: }
159: getnextch();
160:
161: switch (nextch) {
162: case '0': plevel = 0; break;
163: case '1': plevel = 1; break;
164: case '2': plevel = 2; break;
165: case '3': plevel = 3; break;
166: default: abort();
167: }
168: getnextch();
169:
170: while (isspace(nextch)) /* Get flag set information */
171: getnextch();
172:
173: if (nextch != ':')
174: abort();
175:
176: for(i = 0; i < 5; i++) {
177: getnextch();
178: switch(nextch){
179: case '-': flagset[i] = fa_unset; break;
180: case '/': flagset[i] = fa_isjmp; break;
181: case '+': flagset[i] = fa_isbranch; break;
182: case '0': flagset[i] = fa_zero; break;
183: case '1': flagset[i] = fa_one; break;
184: case 'x': flagset[i] = fa_dontcare; break;
185: case '?': flagset[i] = fa_unknown; break;
186: default: flagset[i] = fa_set; break;
187: }
188: }
189:
190: getnextch();
191: while (isspace(nextch))
192: getnextch();
193:
194: if (nextch != ':') /* Get flag used information */
195: abort();
196:
197: for(i = 0; i < 5; i++) {
198: getnextch();
199: switch(nextch){
200: case '-': flaguse[i] = fu_unused; break;
201: case '/': flaguse[i] = fu_isjmp; break;
202: case '+': flaguse[i] = fu_maybecc; break;
203: case '?': flaguse[i] = fu_unknown; break;
204: default: flaguse[i] = fu_used; break;
205: }
206: }
207:
208: getnextch();
209: while (isspace(nextch))
210: getnextch();
211:
212: if (nextch != ':') /* Get source/dest usage information */
213: abort();
214:
215: getnextch();
216: sduse = nextchtohex() << 4;
217: getnextch();
218: sduse |= nextchtohex();
219:
220: getnextch();
221: while (isspace(nextch))
222: getnextch();
223:
224: if (nextch != ':')
225: abort();
226:
227: if (fgets(opcstr, 250, tablef) != opcstr) {
228: abort();
229: }
230: getnextch();
231:
232: if (nextch == '-') {
233: int neg;
234: char fm[20];
235: getnextch();
236: while (isspace(nextch))
237: getnextch();
238: neg = 1;
239: if (nextch == '-') {
240: neg = -1;
241: getnextch();
242: }
243: for (;;) {
244: if (nextch < '0' || nextch > '9')
245: break;
246: head *= 10;
247: head += nextch - '0';
248: nextch = fgetc (tablef);
249: }
250: head *= neg;
251: while (isspace(nextch))
252: getnextch();
253: for (;;) {
254: if (nextch < '0' || nextch > '9')
255: break;
256: tail *= 10;
257: tail += nextch - '0';
258: nextch = fgetc (tablef);
259: }
260: while (isspace(nextch))
261: getnextch();
262: for (;;) {
263: if (nextch < '0' || nextch > '9')
264: break;
265: clocks *= 10;
266: clocks += nextch - '0';
267: nextch = fgetc (tablef);
268: }
269: if (nextch == ' ') {
270: if (fgets(fm, sizeof fm, tablef) != fm) {
271: abort();
272: }
273: if (!strnicmp(fm, "fea", 3))
274: fetchmode = 1;
275: if (!strnicmp(fm, "cea", 3))
276: fetchmode = 2;
277: if (!strnicmp(fm, "fiea", 4))
278: fetchmode = 3;
279: if (!strnicmp(fm, "ciea", 4))
280: fetchmode = 4;
281: if (!strnicmp(fm, "jea", 3))
282: fetchmode = 5;
283: }
284: getnextch();
285: }
286:
287: int j;
288: /* Remove superfluous spaces from the string */
289: char *opstrp = opcstr, *osendp;
290: char tmp[100], *p;
291: int slen = 0;
1.1 root 292:
1.1.1.3 root 293: while (isspace(*opstrp))
1.1.1.4 ! root 294: opstrp++;
1.1 root 295:
1.1.1.3 root 296: osendp = opstrp;
297: while (*osendp) {
1.1.1.4 ! root 298: if (!isspace (*osendp))
! 299: slen = osendp - opstrp + 1;
1.1.1.3 root 300: osendp++;
301: }
302: opstrp[slen] = 0;
303:
304: if (no_insns > 0)
305: printf(",\n");
306: no_insns++;
307: strcpy (tmp, opstrp);
308: strcat (tmp, " ");
309: p = tmp;
310: while (!isspace(*p++));
311: *p = 0;
312: printf("/* %s */\n", tmp);
313: printf("{0x%04X,%2d,{", bitpattern, n_variable);
314: for (j = 0; j < 16; j++) {
315: printf("%2d", bitpos[j]);
316: if (j < 15)
317: printf(",");
318: }
319: printf ("},0x%04X,%d,%d,%d,{", bitmask, cpulevel, uncpulevel, plevel);
320: for(i = 0; i < 5; i++) {
321: printf("{%d,%d}%s", flaguse[i], flagset[i], i == 4 ? "" : ",");
322: }
323: printf("},0x%02x,_T(\"%s\"),%2d,%2d,%2d,%2d}", sduse, opstrp, head, tail, clocks, fetchmode);
1.1 root 324: }
325: printf("};\nint n_defs68k = %d;\n", no_insns);
326: return 0;
327: }
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