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URL https://opencores.org/ocsvn/ao68000/ao68000/trunk

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[/] [ao68000/] [trunk/] [tests/] [compare_with_winuae/] [winuae/] [build68k.c] - Blame information for rev 12

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Line No. Rev Author Line
1 12 alfik 
/*
2 
 * UAE - The Un*x Amiga Emulator
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 *
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 * Read 68000 CPU specs from file "table68k" and build table68k.c
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 *
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 * Copyright 1995,1996 Bernd Schmidt
7 
 */
8 
 
9 
#include <stdlib.h>
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//AO#include <tchar.h>
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#include <assert.h>
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#include <ctype.h>
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14 
//AO#define TCHAR char
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16 
//AO#include "sysconfig.h"
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//AO#include "sysdeps.h"
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#include "ao.h"
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20 
#include "readcpu.h"
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22 
static FILE *tablef;
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static int nextch = 0;
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25 
static void getnextch(void)
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{
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    do {
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        nextch = fgetc(tablef);
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        if (nextch == '%') {
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            do {
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                nextch = fgetc(tablef);
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            } while (nextch != EOF && nextch != '\n');
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        }
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    } while (nextch != EOF && isspace(nextch));
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}
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static int nextchtohex(void)
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{
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    switch (isupper (nextch) ? tolower (nextch) : nextch) {
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     case '0': return 0;
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     case '1': return 1;
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     case '2': return 2;
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     case '3': return 3;
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     case '4': return 4;
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     case '5': return 5;
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     case '6': return 6;
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     case '7': return 7;
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     case '8': return 8;
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     case '9': return 9;
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     case 'a': return 10;
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     case 'b': return 11;
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     case 'c': return 12;
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     case 'd': return 13;
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     case 'e': return 14;
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     case 'f': return 15;
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     default: abort();
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    }
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}
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int main(int argc, char **argv)
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{
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    int no_insns = 0;
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//AO68000
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//    printf ("#include \"sysconfig.h\"\n");
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//    printf ("#include \"sysdeps.h\"\n");
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    printf ("#include \"ao.h\"\n");
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//AO68000 end
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    printf ("#include \"readcpu.h\"\n");
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    printf ("struct instr_def defs68k[] = {\n");
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#if 0
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    tablef = fopen("table68k","r");
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    if (tablef == NULL) {
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        fprintf(stderr, "table68k not found\n");
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        exit(1);
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    }
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#else
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    tablef = stdin;
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#endif
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    getnextch();
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    while (nextch != EOF) {
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        int cpulevel, plevel, sduse;
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        int i;
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        char patbits[16];
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        char opcstr[256];
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        int bitpos[16];
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        int flagset[5], flaguse[5];
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        unsigned int bitmask,bitpattern;
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        int n_variable;
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        n_variable = 0;
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        bitmask = bitpattern = 0;
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        memset (bitpos, 0, sizeof(bitpos));
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        for(i=0; i<16; i++) {
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            int currbit;
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            bitmask <<= 1;
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            bitpattern <<= 1;
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            switch (nextch) {
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             case '0': currbit = bit0; bitmask |= 1; break;
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             case '1': currbit = bit1; bitmask |= 1; bitpattern |= 1; break;
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             case 'c': currbit = bitc; break;
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             case 'C': currbit = bitC; break;
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             case 'f': currbit = bitf; break;
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             case 'i': currbit = biti; break;
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             case 'I': currbit = bitI; break;
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             case 'j': currbit = bitj; break;
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             case 'J': currbit = bitJ; break;
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             case 'k': currbit = bitk; break;
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             case 'K': currbit = bitK; break;
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             case 's': currbit = bits; break;
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             case 'S': currbit = bitS; break;
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             case 'd': currbit = bitd; break;
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             case 'D': currbit = bitD; break;
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             case 'r': currbit = bitr; break;
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             case 'R': currbit = bitR; break;
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             case 'z': currbit = bitz; break;
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             case 'p': currbit = bitp; break;
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             default: abort();
121 
            }
122 
            if (!(bitmask & 1)) {
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                bitpos[n_variable] = currbit;
124 
                n_variable++;
125 
            }
126 
 
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            if (nextch == '0' || nextch == '1')
128 
                bitmask |= 1;
129 
            if (nextch == '1')
130 
                bitpattern |= 1;
131 
            patbits[i] = nextch;
132 
            getnextch();
133 
        }
134 
 
135 
        while (isspace(nextch) || nextch == ':') /* Get CPU and privilege level */
136 
            getnextch();
137 
 
138 
        switch (nextch) {
139 
         case '0': cpulevel = 0; break;
140 
         case '1': cpulevel = 1; break;
141 
         case '2': cpulevel = 2; break;
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         case '3': cpulevel = 3; break;
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         case '4': cpulevel = 4; break;
144 
         case '5': cpulevel = 5; break;
145 
         case '6': cpulevel = 6; break;
146 
         case '7': cpulevel = 7; break;
147 
         default: abort();
148 
        }
149 
        getnextch();
150 
 
151 
        switch (nextch) {
152 
         case '0': plevel = 0; break;
153 
         case '1': plevel = 1; break;
154 
         case '2': plevel = 2; break;
155 
         case '3': plevel = 3; break;
156 
         default: abort();
157 
        }
158 
        getnextch();
159 
 
160 
        while (isspace(nextch))                   /* Get flag set information */
161 
            getnextch();
162 
 
163 
        if (nextch != ':')
164 
            abort();
165 
 
166 
        for(i = 0; i < 5; i++) {
167 
            getnextch();
168 
            switch(nextch){
169 
             case '-': flagset[i] = fa_unset; break;
170 
             case '/': flagset[i] = fa_isjmp; break;
171 
             case '+': flagset[i] = fa_isbranch; break;
172 
             case '0': flagset[i] = fa_zero; break;
173 
             case '1': flagset[i] = fa_one; break;
174 
             case 'x': flagset[i] = fa_dontcare; break;
175 
             case '?': flagset[i] = fa_unknown; break;
176 
             default: flagset[i] = fa_set; break;
177 
            }
178 
        }
179 
 
180 
        getnextch();
181 
        while (isspace(nextch))
182 
            getnextch();
183 
 
184 
        if (nextch != ':')                        /* Get flag used information */
185 
            abort();
186 
 
187 
        for(i = 0; i < 5; i++) {
188 
            getnextch();
189 
            switch(nextch){
190 
             case '-': flaguse[i] = fu_unused; break;
191 
             case '/': flaguse[i] = fu_isjmp; break;
192 
             case '+': flaguse[i] = fu_maybecc; break;
193 
             case '?': flaguse[i] = fu_unknown; break;
194 
             default: flaguse[i] = fu_used; break;
195 
            }
196 
        }
197 
 
198 
        getnextch();
199 
        while (isspace(nextch))
200 
            getnextch();
201 
 
202 
        if (nextch != ':')                        /* Get source/dest usage information */
203 
            abort();
204 
 
205 
        getnextch();
206 
        sduse = nextchtohex() << 4;
207 
        getnextch();
208 
        sduse |= nextchtohex();
209 
 
210 
        getnextch();
211 
        while (isspace(nextch))
212 
            getnextch();
213 
 
214 
        if (nextch != ':')
215 
            abort();
216 
 
217 
        fgets(opcstr, 250, tablef);
218 
        getnextch();
219 
        {
220 
            int j;
221 
            /* Remove superfluous spaces from the string */
222 
            char *opstrp = opcstr, *osendp;
223 
            char tmp[100], *p;
224 
            int slen = 0;
225 
 
226 
            while (isspace(*opstrp))
227 
                opstrp++;
228 
 
229 
            osendp = opstrp;
230 
            while (*osendp) {
231 
                if (!isspace (*osendp))
232 
                    slen = osendp - opstrp + 1;
233 
                osendp++;
234 
            }
235 
            opstrp[slen] = 0;
236 
 
237 
            if (no_insns > 0)
238 
                printf(",\n");
239 
            no_insns++;
240 
            strcpy (tmp, opstrp);
241 
            strcat (tmp, " ");
242 
            p = tmp;
243 
            while (!isspace(*p++));
244 
            *p = 0;
245 
            printf("/* %s */\n", tmp);
246 
            printf("{0x%04X,%2d,{", bitpattern, n_variable);
247 
            for (j = 0; j < 16; j++) {
248 
                printf("%2d", bitpos[j]);
249 
                if (j < 15)
250 
                    printf(",");
251 
            }
252 
            printf ("},0x%04X,%d,%d,{", bitmask, cpulevel, plevel);
253 
            for(i = 0; i < 5; i++) {
254 
                printf("{%d,%d}%s", flaguse[i], flagset[i], i == 4 ? "" : ",");
255 
            }
256 
            printf("},%2d,L\"%s\"}", sduse, opstrp);
257 
        }
258 
    }
259 
    printf("};\nint n_defs68k = %d;\n", no_insns);
260 
    return 0;
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}

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