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1.1 root 1: /*
1.1.1.2 root 2: * UAE - The Un*x Amiga Emulator - CPU core
1.1 root 3: *
4: * Read 68000 CPU specs from file "table68k" and build table68k.c
5: *
6: * Copyright 1995,1996 Bernd Schmidt
1.1.1.2 root 7: *
8: * Adaptation to Hatari by Thomas Huth
9: *
10: * This file is distributed under the GNU Public License, version 2 or at
11: * your option any later version. Read the file gpl.txt for details.
1.1 root 12: */
1.1.1.3 ! root 13: char Build68k_rcsid[] = "Hatari $Id: build68k.c,v 1.4 2004/04/19 08:53:49 thothy Exp $";
1.1 root 14:
15: #include <assert.h>
16: #include <ctype.h>
1.1.1.3 ! root 17: #include <string.h>
1.1 root 18:
19: #include "readcpu.h"
20:
1.1.1.3 ! root 21:
1.1 root 22: static FILE *tablef;
23: static int nextch = 0;
24:
1.1.1.3 ! root 25:
1.1 root 26: static void getnextch(void)
27: {
28: do {
29: nextch = fgetc(tablef);
30: if (nextch == '%') {
31: do {
32: nextch = fgetc(tablef);
33: } while (nextch != EOF && nextch != '\n');
34: }
35: } while (nextch != EOF && isspace(nextch));
36: }
37:
38: static int nextchtohex(void)
39: {
40: switch (isupper (nextch) ? tolower (nextch) : nextch) {
41: case '0': return 0;
42: case '1': return 1;
43: case '2': return 2;
44: case '3': return 3;
45: case '4': return 4;
46: case '5': return 5;
47: case '6': return 6;
48: case '7': return 7;
49: case '8': return 8;
50: case '9': return 9;
51: case 'a': return 10;
52: case 'b': return 11;
53: case 'c': return 12;
54: case 'd': return 13;
55: case 'e': return 14;
56: case 'f': return 15;
57: default: abort();
58: }
59: }
60:
61: int main(int argc, char **argv)
62: {
63: int no_insns = 0;
64:
1.1.1.2 root 65: /*printf ("#include \"sysconfig.h\"\n");*/
1.1 root 66: printf ("#include \"sysdeps.h\"\n");
67: printf ("#include \"readcpu.h\"\n");
68: printf ("struct instr_def defs68k[] = {\n");
69: #if 0
70: tablef = fopen("table68k","r");
71: if (tablef == NULL) {
72: fprintf(stderr, "table68k not found\n");
73: exit(1);
74: }
75: #else
76: tablef = stdin;
77: #endif
78: getnextch();
79: while (nextch != EOF) {
80: int cpulevel, plevel, sduse;
81: int i;
82:
83: char patbits[16];
84: char opcstr[256];
85: int bitpos[16];
86: int flagset[5], flaguse[5];
87:
88: unsigned int bitmask,bitpattern;
89: int n_variable;
90:
91: n_variable = 0;
92: bitmask = bitpattern = 0;
93: memset (bitpos, 0, sizeof(bitpos));
94: for(i=0; i<16; i++) {
95: int currbit;
96: bitmask <<= 1;
97: bitpattern <<= 1;
98:
99: switch (nextch) {
100: case '0': currbit = bit0; bitmask |= 1; break;
101: case '1': currbit = bit1; bitmask |= 1; bitpattern |= 1; break;
102: case 'c': currbit = bitc; break;
103: case 'C': currbit = bitC; break;
104: case 'f': currbit = bitf; break;
105: case 'i': currbit = biti; break;
106: case 'I': currbit = bitI; break;
107: case 'j': currbit = bitj; break;
108: case 'J': currbit = bitJ; break;
109: case 'k': currbit = bitk; break;
110: case 'K': currbit = bitK; break;
111: case 's': currbit = bits; break;
112: case 'S': currbit = bitS; break;
113: case 'd': currbit = bitd; break;
114: case 'D': currbit = bitD; break;
115: case 'r': currbit = bitr; break;
116: case 'R': currbit = bitR; break;
117: case 'z': currbit = bitz; break;
1.1.1.2 root 118: case 'p': currbit = bitp; break;
1.1 root 119: default: abort();
120: }
121: if (!(bitmask & 1)) {
122: bitpos[n_variable] = currbit;
123: n_variable++;
124: }
125:
126: if (nextch == '0' || nextch == '1')
127: bitmask |= 1;
128: if (nextch == '1')
129: bitpattern |= 1;
130: patbits[i] = nextch;
131: getnextch();
132: }
133:
134: while (isspace(nextch) || nextch == ':') /* Get CPU and privilege level */
135: getnextch();
136:
137: switch (nextch) {
138: case '0': cpulevel = 0; break;
139: case '1': cpulevel = 1; break;
140: case '2': cpulevel = 2; break;
141: case '3': cpulevel = 3; break;
142: case '4': cpulevel = 4; break;
143: default: abort();
144: }
145: getnextch();
146:
147: switch (nextch) {
148: case '0': plevel = 0; break;
149: case '1': plevel = 1; break;
150: case '2': plevel = 2; break;
151: case '3': plevel = 3; break;
152: default: abort();
153: }
154: getnextch();
155:
156: while (isspace(nextch)) /* Get flag set information */
157: getnextch();
158:
159: if (nextch != ':')
160: abort();
161:
162: for(i = 0; i < 5; i++) {
163: getnextch();
164: switch(nextch){
165: case '-': flagset[i] = fa_unset; break;
166: case '/': flagset[i] = fa_isjmp; break;
1.1.1.2 root 167: case '+': flagset[i] = fa_isbranch; break;
1.1 root 168: case '0': flagset[i] = fa_zero; break;
169: case '1': flagset[i] = fa_one; break;
170: case 'x': flagset[i] = fa_dontcare; break;
171: case '?': flagset[i] = fa_unknown; break;
172: default: flagset[i] = fa_set; break;
173: }
174: }
175:
176: getnextch();
177: while (isspace(nextch))
178: getnextch();
179:
180: if (nextch != ':') /* Get flag used information */
181: abort();
182:
183: for(i = 0; i < 5; i++) {
184: getnextch();
185: switch(nextch){
186: case '-': flaguse[i] = fu_unused; break;
187: case '/': flaguse[i] = fu_isjmp; break;
188: case '+': flaguse[i] = fu_maybecc; break;
189: case '?': flaguse[i] = fu_unknown; break;
190: default: flaguse[i] = fu_used; break;
191: }
192: }
193:
194: getnextch();
195: while (isspace(nextch))
196: getnextch();
197:
198: if (nextch != ':') /* Get source/dest usage information */
199: abort();
200:
201: getnextch();
202: sduse = nextchtohex() << 4;
203: getnextch();
204: sduse |= nextchtohex();
205:
206: getnextch();
207: while (isspace(nextch))
208: getnextch();
209:
210: if (nextch != ':')
211: abort();
212:
213: fgets(opcstr, 250, tablef);
214: getnextch();
215: {
216: int j;
217: /* Remove superfluous spaces from the string */
218: char *opstrp = opcstr, *osendp;
219: int slen = 0;
220:
221: while (isspace(*opstrp))
222: opstrp++;
223:
224: osendp = opstrp;
225: while (*osendp) {
226: if (!isspace (*osendp))
227: slen = osendp - opstrp + 1;
228: osendp++;
229: }
230: opstrp[slen] = 0;
231:
232: if (no_insns > 0)
233: printf(",\n");
234: no_insns++;
235: printf("{ %d, %d, {", bitpattern, n_variable);
236: for (j = 0; j < 16; j++) {
237: printf("%d", bitpos[j]);
238: if (j < 15)
239: printf(",");
240: }
241: printf ("}, %d, %d, %d, { ", bitmask, cpulevel, plevel);
242: for(i = 0; i < 5; i++) {
243: printf("{ %d, %d }%c ", flaguse[i], flagset[i], i == 4 ? ' ' : ',');
244: }
245: printf("}, %d, \"%s\"}", sduse, opstrp);
246: }
247: }
248: printf("};\nint n_defs68k = %d;\n", no_insns);
249: return 0;
250: }
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