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1.1.1.3 root 1: /*
1.1 root 2: * UAE - The Un*x Amiga Emulator
3: *
4: * MC68000 emulation generator
5: *
1.1.1.3 root 6: * This is a fairly stupid program that generates a lot of case labels that
1.1 root 7: * can be #included in a switch statement.
8: * As an alternative, it can generate functions that handle specific
9: * MC68000 instructions, plus a prototype header file and a function pointer
10: * array to look up the function for an opcode.
11: * Error checking is bad, an illegal table68k file will cause the program to
12: * call abort().
1.1.1.3 root 13: * The generated code is sometimes sub-optimal, an optimizing compiler should
1.1 root 14: * take care of this.
1.1.1.3 root 15: *
1.1 root 16: * Copyright 1995, 1996 Bernd Schmidt
17: */
18:
19: #include "sysconfig.h"
20: #include "sysdeps.h"
21: #include <ctype.h>
22:
23: #include "config.h"
24: #include "options.h"
25: #include "readcpu.h"
26:
27: #define BOOL_TYPE "int"
28:
1.1.1.3 root 29: static FILE *headerfile;
30: static FILE *stblfile;
31:
32: static int using_prefetch;
33: static int using_exception_3;
34: static int cpu_level;
35:
36: /* For the current opcode, the next lower level that will have different code.
37: * Initialized to -1 for each opcode. If it remains unchanged, indicates we
38: * are done with that opcode. */
39: static int next_cpu_level;
1.1 root 40:
1.1.1.3 root 41: char warning_buffer[256];
42:
43: void write_log (const char *s)
1.1 root 44: {
1.1.1.3 root 45: fprintf (stderr, "%s", s);
1.1 root 46: }
47:
1.1.1.3 root 48: static int *opcode_map;
49: static int *opcode_next_clev;
50: static int *opcode_last_postfix;
51: static unsigned long *counts;
52:
1.1 root 53: static void read_counts(void)
54: {
55: FILE *file;
56: unsigned long opcode,count, total;
57: char name[20];
1.1.1.3 root 58: int nr = 0, nr2 = 0, r = 0;
59: memset (counts, 0, 65536 * sizeof *counts);
1.1 root 60:
1.1.1.3 root 61: file = fopen ("frequent.68k", "r");
62: if (file) {
63: fscanf (file, "Total: %lu\n", &total);
64: while (fscanf (file,"%lx: %lu %s\n", &opcode, &count, name) == 3) {
65: opcode_next_clev[nr] = 3;
66: opcode_last_postfix[nr] = -1;
67: opcode_map[nr++] = opcode;
68: counts[opcode] = count;
69: }
70: fclose (file);
71: }
72: if (nr == nr_cpuop_funcs)
73: return;
74: for (opcode = 0; opcode < 0x10000; opcode++) {
75: if (table68k[opcode].handler == -1 && table68k[opcode].mnemo != i_ILLG
76: && counts[opcode] == 0)
1.1 root 77: {
1.1.1.3 root 78: opcode_next_clev[nr] = 3;
79: opcode_last_postfix[nr] = -1;
80: opcode_map[nr++] = opcode;
81: counts[opcode] = count;
1.1 root 82: }
83: }
1.1.1.3 root 84: if (nr != nr_cpuop_funcs)
85: abort ();
1.1 root 86: }
87:
1.1.1.3 root 88: static char endlabelstr[80];
89: static int endlabelno = 0;
1.1 root 90:
91: static int n_braces = 0;
1.1.1.3 root 92: static int m68k_pc_offset = 0;
1.1 root 93:
94: static void start_brace(void)
95: {
96: n_braces++;
1.1.1.3 root 97: printf ("{");
1.1 root 98: }
99:
100: static void close_brace(void)
101: {
102: assert (n_braces > 0);
103: n_braces--;
1.1.1.3 root 104: printf ("}");
1.1 root 105: }
106:
107: static void finish_braces(void)
108: {
109: while (n_braces > 0)
110: close_brace();
111: }
112:
113: static void pop_braces(int to)
114: {
115: while (n_braces > to)
116: close_brace();
117: }
118:
119: static int bit_size(int size)
120: {
121: switch(size) {
122: case sz_byte: return 8;
123: case sz_word: return 16;
124: case sz_long: return 32;
125: default:
126: abort();
127: }
128: return 0;
129: }
130:
131: static const char *bit_mask(int size)
132: {
133: switch(size) {
1.1.1.3 root 134: case sz_byte: return "0xff";
135: case sz_word: return "0xffff";
136: case sz_long: return "0xffffffff";
1.1 root 137: default:
138: abort();
139: }
140: return 0;
141: }
142:
1.1.1.3 root 143: static const char *gen_nextilong (void)
144: {
145: static char buffer[80];
146: int r = m68k_pc_offset;
147: m68k_pc_offset += 4;
148: sprintf (buffer, "get_ilong%s(%d)", using_prefetch ? "_prefetch" : "", r);
149: return buffer;
150: }
151:
152: static const char *gen_nextiword (void)
153: {
154: static char buffer[80];
155: int r = m68k_pc_offset;
156: m68k_pc_offset += 2;
157: sprintf (buffer, "get_iword%s(%d)", using_prefetch ? "_prefetch" : "", r);
158: return buffer;
159: }
160:
161: static const char *gen_nextibyte (void)
162: {
163: static char buffer[80];
164: int r = m68k_pc_offset;
165: m68k_pc_offset += 2;
166: sprintf (buffer, "get_ibyte%s(%d)", using_prefetch ? "_prefetch" : "", r);
167: return buffer;
168: }
169:
170: static void fill_prefetch_0 (void)
171: {
172: if (using_prefetch)
173: printf ("fill_prefetch_0 ();\n");
174: }
175:
176: static void fill_prefetch_2 (void)
177: {
178: if (using_prefetch)
179: printf ("fill_prefetch_2 ();\n");
180: }
181:
182: static void sync_m68k_pc (void)
183: {
184: if (m68k_pc_offset == 0)
185: return;
186: printf ("m68k_incpc(%d);\n", m68k_pc_offset);
187: switch (m68k_pc_offset) {
188: case 0:
189: /*fprintf (stderr, "refilling prefetch at 0\n");*/
190: break;
191: case 2:
192: fill_prefetch_2();
193: break;
194: default:
195: fill_prefetch_0();
196: break;
197: }
198: m68k_pc_offset = 0;
199: }
200:
201: /* getv == 1: fetch data; getv != 0: check for odd address. If movem != 0,
202: * the calling routine handles Apdi and Aipi moeds. */
203: static void genamode (amodes mode, char *reg, wordsizes size, char *name, int getv, int movem)
1.1 root 204: {
205: start_brace ();
206: switch(mode) {
207: case Dreg:
208: if (movem)
209: abort();
1.1.1.3 root 210: if (getv == 1)
211: switch(size) {
1.1 root 212: case sz_byte:
1.1.1.2 root 213: #ifdef AMIGA
214: /* sam: I don't know why gcc.2.7.2.1 produces a code worse */
215: /* if it is not done like that: */
1.1.1.3 root 216: printf ("\tuae_s8 %s = ((uae_u8*)&m68k_dreg(regs, %s))[3];\n", name, reg);
1.1.1.2 root 217: #else
1.1.1.3 root 218: printf ("\tuae_s8 %s = m68k_dreg(regs, %s);\n", name, reg);
1.1.1.2 root 219: #endif
1.1 root 220: break;
221: case sz_word:
1.1.1.2 root 222: #ifdef AMIGA
1.1.1.3 root 223: printf ("\tuae_s16 %s = ((uae_s16*)&m68k_dreg(regs, %s))[1];\n", name, reg);
1.1.1.2 root 224: #else
1.1.1.3 root 225: printf ("\tuae_s16 %s = m68k_dreg(regs, %s);\n", name, reg);
1.1.1.2 root 226: #endif
1.1 root 227: break;
228: case sz_long:
1.1.1.3 root 229: printf ("\tuae_s32 %s = m68k_dreg(regs, %s);\n", name, reg);
1.1 root 230: break;
231: default: abort();
232: }
1.1.1.3 root 233: return;
1.1 root 234: case Areg:
235: if (movem)
236: abort();
1.1.1.3 root 237: if (getv == 1)
238: switch(size) {
1.1 root 239: case sz_word:
1.1.1.3 root 240: printf ("\tuae_s16 %s = m68k_areg(regs, %s);\n", name, reg);
1.1 root 241: break;
242: case sz_long:
1.1.1.3 root 243: printf ("\tuae_s32 %s = m68k_areg(regs, %s);\n", name, reg);
1.1 root 244: break;
245: default: abort();
246: }
1.1.1.3 root 247: return;
1.1 root 248: case Aind:
1.1.1.3 root 249: printf ("\tuaecptr %sa = m68k_areg(regs, %s);\n", name, reg);
1.1 root 250: break;
251: case Aipi:
1.1.1.3 root 252: printf ("\tuaecptr %sa = m68k_areg(regs, %s);\n", name, reg);
1.1 root 253: break;
254: case Apdi:
1.1.1.3 root 255: switch(size) {
1.1 root 256: case sz_byte:
1.1.1.3 root 257: if (movem)
258: printf ("\tuaecptr %sa = m68k_areg(regs, %s);\n", name, reg);
259: else
260: printf ("\tuaecptr %sa = m68k_areg(regs, %s) - areg_byteinc[%s];\n", name, reg, reg);
1.1 root 261: break;
262: case sz_word:
1.1.1.3 root 263: printf ("\tuaecptr %sa = m68k_areg(regs, %s) - %d;\n", name, reg, movem ? 0 : 2);
1.1 root 264: break;
265: case sz_long:
1.1.1.3 root 266: printf ("\tuaecptr %sa = m68k_areg(regs, %s) - %d;\n", name, reg, movem ? 0 : 4);
1.1 root 267: break;
268: default: abort();
269: }
270: break;
271: case Ad16:
1.1.1.3 root 272: printf ("\tuaecptr %sa = m68k_areg(regs, %s) + (uae_s32)(uae_s16)%s;\n", name, reg, gen_nextiword());
1.1 root 273: break;
274: case Ad8r:
1.1.1.3 root 275: if (cpu_level > 1) {
276: if (next_cpu_level < 1)
277: next_cpu_level = 1;
278: sync_m68k_pc();
1.1 root 279: start_brace();
1.1.1.3 root 280: printf ("\tuaecptr %sa = get_disp_ea_020(m68k_areg(regs, %s), next_iword());\n", name, reg);
281: } else
282: printf ("\tuaecptr %sa = get_disp_ea_000(m68k_areg(regs, %s), %s);\n", name, reg, gen_nextiword());
1.1 root 283: break;
284: case PC16:
1.1.1.3 root 285: printf ("\tuaecptr %sa = m68k_getpc() + %d;\n", name, m68k_pc_offset);
286: printf ("\t%sa += (uae_s32)(uae_s16)%s;\n", name, gen_nextiword());
1.1 root 287: break;
288: case PC8r:
1.1.1.3 root 289: if (cpu_level > 1) {
290: if (next_cpu_level < 1)
291: next_cpu_level = 1;
292: sync_m68k_pc();
1.1 root 293: start_brace();
1.1.1.3 root 294: printf ("\tuaecptr tmppc = m68k_getpc();\n");
295: printf ("\tuaecptr %sa = get_disp_ea_020(tmppc, next_iword());\n", name);
296: } else {
297: printf ("\tuaecptr tmppc = m68k_getpc() + %d;\n", m68k_pc_offset);
298: printf ("\tuaecptr %sa = get_disp_ea_000(tmppc, %s);\n", name, gen_nextiword());
1.1 root 299: }
1.1.1.3 root 300:
1.1 root 301: break;
302: case absw:
1.1.1.3 root 303: printf ("\tuaecptr %sa = (uae_s32)(uae_s16)%s;\n", name, gen_nextiword());
1.1 root 304: break;
305: case absl:
1.1.1.3 root 306: printf ("\tuaecptr %sa = %s;\n", name, gen_nextilong());
1.1 root 307: break;
308: case imm:
1.1.1.3 root 309: if (getv != 1)
310: abort ();
311: switch(size) {
312: case sz_byte:
313: printf ("\tuae_s8 %s = %s;\n", name, gen_nextibyte());
314: break;
315: case sz_word:
316: printf ("\tuae_s16 %s = %s;\n", name, gen_nextiword());
317: break;
318: case sz_long:
319: printf ("\tuae_s32 %s = %s;\n", name, gen_nextilong());
320: break;
321: default: abort();
322: }
323: return;
324: case imm0:
325: if (getv != 1) abort();
326: printf ("\tuae_s8 %s = %s;\n", name, gen_nextibyte());
327: return;
328: case imm1:
329: if (getv != 1) abort();
330: printf ("\tuae_s16 %s = %s;\n", name, gen_nextiword());
331: return;
332: case imm2:
333: if (getv != 1) abort();
334: printf ("\tuae_s32 %s = %s;\n", name, gen_nextilong());
335: return;
336: case immi:
337: if (getv != 1) abort();
338: printf ("\tuae_u32 %s = %s;\n", name, reg);
339: return;
340: default:
341: abort();
342: }
343:
344: /* We get here for all non-reg non-immediate addressing modes to
345: * actually fetch the value. */
346:
347: if (using_exception_3 && getv != 0 && size != sz_byte) {
348: printf ("\tif ((%sa & 1) != 0) {\n", name);
349: printf ("\t\tlast_fault_for_exception_3 = %sa;\n", name);
350: printf ("\t\tlast_op_for_exception_3 = opcode;\n", name);
351: printf ("\t\tlast_addr_for_exception_3 = m68k_getpc() + %d;\n", m68k_pc_offset);
352: printf ("\t\tException(3, 0);\n");
353: printf ("\t\tgoto %s;\n", endlabelstr);
354: printf ("\t}\n");
355: start_brace();
356: }
357:
358: if (getv == 1) {
359: start_brace ();
360: switch(size) {
361: case sz_byte:
362: printf ("\tuae_s8 %s = get_byte(%sa);\n", name, name);
363: break;
364: case sz_word:
365: printf ("\tuae_s16 %s = get_word(%sa);\n", name, name);
366: break;
367: case sz_long:
368: printf ("\tuae_s32 %s = get_long(%sa);\n", name, name);
369: break;
370: default: abort();
371: }
372: }
373: /* We now might have to fix up the register for pre-dec or post-inc
374: * addressing modes. */
375: if (!movem)
376: switch (mode) {
377: case Aipi:
1.1 root 378: switch(size) {
379: case sz_byte:
1.1.1.3 root 380: printf ("\tm68k_areg(regs, %s) += areg_byteinc[%s];\n", reg, reg);
1.1 root 381: break;
382: case sz_word:
1.1.1.3 root 383: printf ("\tm68k_areg(regs, %s) += 2;\n", reg);
1.1 root 384: break;
385: case sz_long:
1.1.1.3 root 386: printf ("\tm68k_areg(regs, %s) += 4;\n", reg);
1.1 root 387: break;
388: default: abort();
389: }
1.1.1.3 root 390: break;
391: case Apdi:
392: printf ("\tm68k_areg (regs, %s) = %sa;\n", reg, name);
393: break;
394: default:
395: break;
396: }
1.1 root 397: }
398:
1.1.1.3 root 399: static void genastore (char *from, amodes mode, char *reg, wordsizes size, char *to)
1.1 root 400: {
401: switch(mode) {
402: case Dreg:
1.1.1.3 root 403: switch(size) {
1.1 root 404: case sz_byte:
1.1.1.3 root 405: printf ("\tm68k_dreg(regs, %s) = (m68k_dreg(regs, %s) & ~0xff) | ((%s) & 0xff);\n", reg, reg, from);
1.1 root 406: break;
407: case sz_word:
1.1.1.3 root 408: printf ("\tm68k_dreg(regs, %s) = (m68k_dreg(regs, %s) & ~0xffff) | ((%s) & 0xffff);\n", reg, reg, from);
1.1 root 409: break;
410: case sz_long:
1.1.1.3 root 411: printf ("\tm68k_dreg(regs, %s) = (%s);\n", reg, from);
1.1 root 412: break;
413: default: abort();
414: }
415: break;
416: case Areg:
1.1.1.3 root 417: switch(size) {
1.1 root 418: case sz_word:
1.1.1.3 root 419: fprintf (stderr, "Foo\n");
420: printf ("\tm68k_areg(regs, %s) = (uae_s32)(uae_s16)(%s);\n", reg, from);
1.1 root 421: break;
422: case sz_long:
1.1.1.3 root 423: printf ("\tm68k_areg(regs, %s) = (%s);\n", reg, from);
1.1 root 424: break;
425: default: abort();
426: }
427: break;
428: case Aind:
429: case Aipi:
430: case Apdi:
431: case Ad16:
432: case Ad8r:
433: case absw:
434: case absl:
1.1.1.3 root 435: if (using_prefetch)
436: sync_m68k_pc();
1.1 root 437: switch(size) {
438: case sz_byte:
1.1.1.3 root 439: printf ("\tput_byte(%sa,%s);\n", to, from);
1.1 root 440: break;
441: case sz_word:
1.1.1.3 root 442: printf ("\tput_word(%sa,%s);\n", to, from);
1.1 root 443: break;
444: case sz_long:
1.1.1.3 root 445: printf ("\tput_long(%sa,%s);\n", to, from);
1.1 root 446: break;
447: default: abort();
448: }
449: break;
450: case PC16:
451: case PC8r:
1.1.1.3 root 452: if (using_prefetch)
453: sync_m68k_pc();
1.1 root 454: switch(size) {
455: case sz_byte:
1.1.1.3 root 456: printf ("\tput_byte(%sa,%s);\n", to, from);
1.1 root 457: break;
458: case sz_word:
1.1.1.3 root 459: if (cpu_level < 2)
1.1 root 460: abort();
1.1.1.3 root 461: printf ("\tput_word(%sa,%s);\n", to, from);
1.1 root 462: break;
463: case sz_long:
1.1.1.3 root 464: if (cpu_level < 2)
1.1 root 465: abort();
1.1.1.3 root 466: printf ("\tput_long(%sa,%s);\n", to, from);
1.1 root 467: break;
468: default: abort();
469: }
470: break;
471: case imm:
472: case imm0:
473: case imm1:
474: case imm2:
475: case immi:
476: abort();
477: break;
1.1.1.3 root 478: default:
1.1 root 479: abort();
480: }
481: }
482:
1.1.1.3 root 483: static void genmovemel(uae_u16 opcode)
1.1 root 484: {
485: char getcode[100];
486: int size = table68k[opcode].size == sz_long ? 4 : 2;
1.1.1.3 root 487:
488: if (table68k[opcode].size == sz_long) {
489: strcpy(getcode, "get_long(srca)");
490: } else {
491: strcpy(getcode, "(uae_s32)(uae_s16)get_word(srca)");
1.1 root 492: }
1.1.1.3 root 493:
494: printf ("\tuae_u16 mask = %s;\n", gen_nextiword());
495: printf ("\tunsigned int dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n");
496: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1);
1.1 root 497: start_brace();
1.1.1.3 root 498: printf ("\twhile (dmask) { m68k_dreg(regs, movem_index1[dmask]) = %s; srca += %d; dmask = movem_next[dmask]; }\n",
1.1 root 499: getcode, size);
1.1.1.3 root 500: printf ("\twhile (amask) { m68k_areg(regs, movem_index1[amask]) = %s; srca += %d; amask = movem_next[amask]; }\n",
1.1 root 501: getcode, size);
502:
503: if (table68k[opcode].dmode == Aipi)
1.1.1.3 root 504: printf ("\tm68k_areg(regs, dstreg) = srca;\n");
1.1 root 505: }
506:
1.1.1.3 root 507: static void genmovemle(uae_u16 opcode)
1.1 root 508: {
509: char putcode[100];
510: int size = table68k[opcode].size == sz_long ? 4 : 2;
511: if (table68k[opcode].size == sz_long) {
1.1.1.3 root 512: strcpy(putcode, "put_long(srca,");
513: } else {
514: strcpy(putcode, "put_word(srca,");
1.1 root 515: }
1.1.1.3 root 516:
517: printf ("\tuae_u16 mask = %s;\n", gen_nextiword());
518: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1);
519: if (using_prefetch)
520: sync_m68k_pc();
521:
1.1 root 522: start_brace();
523: if (table68k[opcode].dmode == Apdi) {
1.1.1.3 root 524: printf ("\tuae_u16 amask = mask & 0xff, dmask = (mask >> 8) & 0xff;\n");
525: printf ("\twhile (amask) { srca -= %d; %s m68k_areg(regs, movem_index2[amask])); amask = movem_next[amask]; }\n",
526: size, putcode);
527: printf ("\twhile (dmask) { srca -= %d; %s m68k_dreg(regs, movem_index2[dmask])); dmask = movem_next[dmask]; }\n",
528: size, putcode);
529: printf ("\tm68k_areg(regs, dstreg) = srca;\n");
1.1.1.2 root 530: } else {
1.1.1.3 root 531: printf ("\tuae_u16 dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n");
532: printf ("\twhile (dmask) { %s m68k_dreg(regs, movem_index1[dmask])); srca += %d; dmask = movem_next[dmask]; }\n",
533: putcode, size);
534: printf ("\twhile (amask) { %s m68k_areg(regs, movem_index1[amask])); srca += %d; amask = movem_next[amask]; }\n",
535: putcode, size);
1.1 root 536: }
537: }
538:
539: typedef enum {
540: flag_logical, flag_add, flag_sub, flag_cmp, flag_addx, flag_subx, flag_zn,
541: flag_av, flag_sv
542: } flagtypes;
543:
544: static void genflags_normal(flagtypes type, wordsizes size, char *value, char *src, char *dst)
545: {
546: char vstr[100],sstr[100],dstr[100];
547: char usstr[100],udstr[100];
548: char unsstr[100],undstr[100];
549:
1.1.1.3 root 550: switch(size) {
1.1 root 551: case sz_byte:
1.1.1.3 root 552: strcpy(vstr, "((uae_s8)(");
553: strcpy(usstr, "((uae_u8)(");
1.1 root 554: break;
555: case sz_word:
1.1.1.3 root 556: strcpy(vstr, "((uae_s16)(");
557: strcpy(usstr, "((uae_u16)(");
1.1 root 558: break;
559: case sz_long:
1.1.1.3 root 560: strcpy(vstr, "((uae_s32)(");
561: strcpy(usstr, "((uae_u32)(");
1.1 root 562: break;
563: default:
564: abort();
565: }
1.1.1.3 root 566: strcpy(unsstr, usstr);
1.1 root 567:
568: strcpy(sstr, vstr);
569: strcpy(dstr, vstr);
570: strcat(vstr, value); strcat(vstr,"))");
571: strcat(dstr, dst); strcat(dstr,"))");
572: strcat(sstr, src); strcat(sstr,"))");
1.1.1.3 root 573:
1.1 root 574: strcpy(udstr, usstr);
575: strcat(udstr, dst); strcat(udstr,"))");
576: strcat(usstr, src); strcat(usstr,"))");
1.1.1.3 root 577:
1.1 root 578: strcpy(undstr, unsstr);
579: strcat(unsstr, "-");
580: strcat(undstr, "~");
581: strcat(undstr, dst); strcat(undstr,"))");
582: strcat(unsstr, src); strcat(unsstr,"))");
583:
584: switch (type) {
585: case flag_logical:
586: case flag_zn:
587: case flag_av:
588: case flag_sv:
589: case flag_addx:
590: case flag_subx:
591: break;
1.1.1.3 root 592:
1.1 root 593: case flag_add:
594: start_brace();
1.1.1.3 root 595: printf ("uae_u32 %s = %s + %s;\n", value, dstr, sstr);
1.1 root 596: break;
597: case flag_sub:
598: case flag_cmp:
599: start_brace();
1.1.1.3 root 600: printf ("uae_u32 %s = %s - %s;\n", value, dstr, sstr);
1.1 root 601: break;
602: }
603:
604:
605: switch (type) {
606: case flag_logical:
607: case flag_zn:
608: break;
1.1.1.3 root 609:
1.1 root 610: case flag_add:
611: case flag_sub:
612: case flag_addx:
613: case flag_subx:
614: case flag_cmp:
615: case flag_av:
616: case flag_sv:
617: start_brace();
1.1.1.3 root 618: printf ("\t"BOOL_TYPE" flgs = %s < 0;\n", sstr);
619: printf ("\t"BOOL_TYPE" flgo = %s < 0;\n", dstr);
620: printf ("\t"BOOL_TYPE" flgn = %s < 0;\n", vstr);
1.1 root 621: break;
622: }
1.1.1.3 root 623:
1.1 root 624: switch(type) {
625: case flag_logical:
1.1.1.3 root 626: printf ("\tVFLG = CFLG = 0;\n");
627: printf ("\tZFLG = %s == 0;\n", vstr);
628: printf ("\tNFLG = %s < 0;\n", vstr);
1.1 root 629: break;
630: case flag_av:
1.1.1.3 root 631: printf ("\tVFLG = (flgs == flgo) && (flgn != flgo);\n");
1.1 root 632: break;
633: case flag_sv:
1.1.1.3 root 634: printf ("\tVFLG = (flgs != flgo) && (flgn != flgo);\n");
1.1 root 635: break;
636: case flag_zn:
1.1.1.3 root 637: printf ("\tif (%s != 0) ZFLG = 0;\n", vstr);
638: printf ("\tNFLG = %s < 0;\n", vstr);
1.1 root 639: break;
640: case flag_add:
1.1.1.3 root 641: printf ("\tZFLG = %s == 0;\n", vstr);
642: printf ("\tVFLG = (flgs == flgo) && (flgn != flgo);\n");
643: printf ("\tCFLG = XFLG = %s < %s;\n", undstr, usstr);
644: printf ("\tNFLG = flgn != 0;\n");
1.1 root 645: break;
646: case flag_sub:
1.1.1.3 root 647: printf ("\tZFLG = %s == 0;\n", vstr);
648: printf ("\tVFLG = (flgs != flgo) && (flgn != flgo);\n");
649: printf ("\tCFLG = XFLG = %s > %s;\n", usstr, udstr);
650: printf ("\tNFLG = flgn != 0;\n");
1.1 root 651: break;
652: case flag_addx:
1.1.1.3 root 653: printf ("\tVFLG = (flgs && flgo && !flgn) || (!flgs && !flgo && flgn);\n");
654: printf ("\tXFLG = CFLG = (flgs && flgo) || (!flgn && (flgo || flgs));\n");
1.1 root 655: break;
656: case flag_subx:
1.1.1.3 root 657: printf ("\tVFLG = (!flgs && flgo && !flgn) || (flgs && !flgo && flgn);\n");
658: printf ("\tXFLG = CFLG = (flgs && !flgo) || (flgn && (!flgo || flgs));\n");
1.1 root 659: break;
660: case flag_cmp:
1.1.1.3 root 661: printf ("\tZFLG = %s == 0;\n", vstr);
662: printf ("\tVFLG = (flgs != flgo) && (flgn != flgo);\n");
663: printf ("\tCFLG = %s > %s;\n", usstr, udstr);
664: printf ("\tNFLG = flgn != 0;\n");
1.1 root 665: break;
666: }
667: }
668:
669: static void genflags(flagtypes type, wordsizes size, char *value, char *src, char *dst)
670: {
1.1.1.3 root 671: #ifdef X86_ASSEMBLY
1.1 root 672: start_brace();
1.1.1.3 root 673: printf ("\tuae_u32 scratch;\n");
1.1 root 674: switch (type) {
1.1.1.3 root 675: case flag_add: case flag_sub:
676: start_brace();
677: printf ("\tuae_u32 %s;\n", value);
1.1 root 678: break;
679:
1.1.1.3 root 680: default:
1.1 root 681: break;
682: }
683:
1.1.1.3 root 684: /* At least some of those casts are fairly important! */
1.1 root 685: switch(type) {
686: case flag_logical:
687: if (strcmp(value, "0") == 0) {
1.1.1.3 root 688: printf ("\t*(uae_u32 *)®flags = 64;\n");
1.1 root 689: } else {
690: switch(size) {
1.1.1.3 root 691: case sz_byte: printf ("\tx86_flag_testb ((uae_s8)(%s));\n", value); break;
692: case sz_word: printf ("\tx86_flag_testw ((uae_s16)(%s));\n", value); break;
693: case sz_long: printf ("\tx86_flag_testl ((uae_s32)(%s));\n", value); break;
1.1 root 694: }
695: }
696: return;
697:
698: case flag_add:
1.1.1.3 root 699: switch(size) {
700: case sz_byte: printf ("\tx86_flag_addb (%s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break;
701: case sz_word: printf ("\tx86_flag_addw (%s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break;
702: case sz_long: printf ("\tx86_flag_addl (%s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break;
1.1 root 703: }
704: return;
705:
706: case flag_sub:
1.1.1.3 root 707: switch(size) {
708: case sz_byte: printf ("\tx86_flag_subb (%s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break;
709: case sz_word: printf ("\tx86_flag_subw (%s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break;
710: case sz_long: printf ("\tx86_flag_subl (%s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break;
1.1 root 711: }
712: return;
713:
714: case flag_cmp:
1.1.1.3 root 715: switch(size) {
716: case sz_byte: printf ("\tx86_flag_cmpb ((uae_s8)(%s), (uae_s8)(%s));\n", src, dst); break;
717: case sz_word: printf ("\tx86_flag_cmpw ((uae_s16)(%s), (uae_s16)(%s));\n", src, dst); break;
718: case sz_long: printf ("\tx86_flag_cmpl ((uae_s32)(%s), (uae_s32)(%s));\n", src, dst); break;
1.1 root 719: }
720: return;
1.1.1.3 root 721:
722: default:
723: break;
1.1 root 724: }
1.1.1.2 root 725: #elif defined(M68K_FLAG_OPT)
1.1.1.3 root 726: /* sam: here I'm cloning what X86_ASSEMBLY does */
727: #define EXT(size) (size==sz_byte?"b":(size==sz_word?"w":"l"))
728: #define CAST(size) (size==sz_byte?"uae_s8":(size==sz_word?"uae_s16":"uae_s32"))
1.1.1.2 root 729: switch (type) {
1.1.1.3 root 730: case flag_add: case flag_sub:
731: start_brace();
732: printf ("\tuae_u32 %s;\n", value);
1.1.1.2 root 733: break;
734:
1.1.1.3 root 735: default:
1.1.1.2 root 736: break;
737: }
738:
739: switch(type) {
740: case flag_logical:
741: if (strcmp(value, "0") == 0) {
1.1.1.3 root 742: printf ("\t*(uae_u16 *)®flags = 4;\n"); /* Z = 1 */
1.1.1.2 root 743: } else {
1.1.1.3 root 744: printf ("\tm68k_flag_tst (%s, (%s)(%s));\n",
745: EXT(size), CAST(size), value);
1.1.1.2 root 746: }
747: return;
748:
749: case flag_add:
1.1.1.3 root 750: printf ("\t{uae_u16 ccr;\n");
751: printf ("\tm68k_flag_add (%s, (%s)%s, (%s)(%s), (%s)(%s));\n",
752: EXT(size), CAST(size), value, CAST(size), src, CAST(size), dst);
753: printf ("\t((uae_u16*)®flags)[1]=((uae_u16*)®flags)[0]=ccr;}\n");
1.1.1.2 root 754: return;
755:
756: case flag_sub:
1.1.1.3 root 757: printf ("\t{uae_u16 ccr;\n");
758: printf ("\tm68k_flag_sub (%s, (%s)%s, (%s)(%s), (%s)(%s));\n",
759: EXT(size), CAST(size), value, CAST(size), src, CAST(size), dst);
760: printf ("\t((uae_u16*)®flags)[1]=((uae_u16*)®flags)[0]=ccr;}\n");
1.1.1.2 root 761: return;
762:
763: case flag_cmp:
1.1.1.3 root 764: printf ("\tm68k_flag_cmp (%s, (%s)(%s), (%s)(%s));\n",
765: EXT(size), CAST(size), src, CAST(size), dst);
1.1.1.2 root 766: return;
1.1.1.3 root 767:
768: default:
769: break;
1.1.1.2 root 770: }
1.1.1.3 root 771: #elif defined(ACORN_FLAG_OPT) && defined(__GNUC_MINOR__)
772: /*
773: * This is new. Might be quite buggy.
774: */
775: switch (type)
776: {
777: case flag_av:
778: case flag_sv:
779: case flag_zn:
780: case flag_addx:
781: case flag_subx:
782: break;
783:
784: case flag_logical:
785: if (strcmp(value, "0") == 0) {
786: /* v=c=n=0 z=1 */
787: printf ("\t*(ULONG*)®flags = 0x40000000;\n");
788: return;
789: }
790: else
791: {
792: start_brace();
793: switch(size)
794: {
795: case sz_byte:
796: printf ("\tUBYTE ccr;\n");
797: printf ("\tULONG shift;\n");
798: printf ("\t__asm__(\"mov %%2,%%1,lsl#24\n\ttst %%2,%%2\n\tmov %%0,r15,lsr#24\n\tbic %%0,%%0,#0x30\"\n"
799: "\t: \"=r\" (ccr) : \"r\" (%s), \"r\" (shift) : \"cc\" );\n", value);
800: printf ("\t*((UBYTE*)®flags+3) = ccr;\n");
801: return;
802: case sz_word:
803: printf ("\tUBYTE ccr;\n");
804: printf ("\tULONG shift;\n");
805: printf ("\t__asm__(\"mov %%2,%%1,lsl#16\n\ttst %%2,%%2\n\tmov %%0,r15,lsr#24\n\tbic %%0,%%0,#0x30\"\n"
806: "\t: \"=r\" (ccr) : \"r\" ((WORD)%s), \"r\" (shift) : \"cc\" );\n", value);
807: printf ("\t*((UBYTE*)®flags+3) = ccr;\n");
808: return;
809: case sz_long:
810: printf ("\tUBYTE ccr;\n");
811: printf ("\t__asm__(\"tst %%1,%%1\n\tmov %%0,r15,lsr#24\n\tbic %%0,%%0,#0x30\"\n"
812: "\t: \"=r\" (ccr) : \"r\" ((LONG)%s) : \"cc\" );\n", value);
813: printf ("\t*((UBYTE*)®flags+3) = ccr;\n");
814: return;
815: }
816: }
817: break;
818: case flag_add:
819: if(strcmp(dst,"0")==0)
820: {
821: printf ("/* Error! Hier muss Peter noch was machen !!! (ADD-Flags) */");
822: }
823: else
824: {
825: start_brace();
826: switch (size)
827: {
828: case sz_byte:
829: printf ("\tULONG ccr, shift, %s;\n", value);
830: printf ("\t__asm__(\"mov %%4,%%3,lsl#24\n\tadds %%0,%%4,%%2,lsl#24\n\tmov %%0,%%0,asr#24\n\tmov %%1,r15\n\torr %%1,%%1,%%1,lsr#29\"\n"
831: "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" (%s), \"r\" (%s), \"r\" (shift) : \"cc\" );\n", value, src, dst);
832: printf ("\t*(ULONG*)®flags = ccr;\n");
833: return;
834: case sz_word:
835: printf ("\tULONG ccr, shift, %s;\n", value);
836: printf ("\t__asm__(\"mov %%4,%%3,lsl#16\n\tadds %%0,%%4,%%2,lsl#16\n\tmov %%0,%%0,asr#16\n\tmov %%1,r15\n\torr %%1,%%1,%%1,lsr#29\"\n"
837: "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" ((WORD)%s), \"r\" ((WORD)%s), \"r\" (shift) : \"cc\" );\n", value, src, dst);
838: printf ("\t*(ULONG*)®flags = ccr;\n");
839: return;
840: case sz_long:
841: printf ("\tULONG ccr, %s;\n", value);
842: printf ("\t__asm__(\"adds %%0,%%3,%%2\n\tmov %%1,r15\n\torr %%1,%%1,%%1,lsr#29\"\n"
843: "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" ((LONG)%s), \"r\" ((LONG)%s) : \"cc\" );\n", value, src, dst);
844: printf ("\t*(ULONG*)®flags = ccr;\n");
845: return;
846: }
847: }
848: break;
849: case flag_sub:
850: if(strcmp(dst,"0")==0)
851: {
852: printf ("/* Error! Hier muss Peter noch was machen !!! (SUB-Flags) */");
853: }
854: else
855: {
856: start_brace();
857: switch (size)
858: {
859: case sz_byte:
860: printf ("\tULONG ccr, shift, %s;\n", value);
861: printf ("\t__asm__(\"mov %%4,%%3,lsl#24\n\tsubs %%0,%%4,%%2,lsl#24\n\tmov %%0,%%0,asr#24\n\tmov %%1,r15\n\teor %%1,%%1,#0x20000000\n\torr %%1,%%1,%%1,lsr#29\"\n"
862: "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" (%s), \"r\" (%s), \"r\" (shift) : \"cc\" );\n", value, src, dst);
863: printf ("\t*(ULONG*)®flags = ccr;\n");
864: return;
865: case sz_word:
866: printf ("\tULONG ccr, shift, %s;\n", value);
867: printf ("\t__asm__(\"mov %%4,%%3,lsl#16\n\tsubs %%0,%%4,%%2,lsl#16\n\tmov %%0,%%0,asr#16\n\tmov %%1,r15\n\teor %%1,%%1,#0x20000000\n\torr %%1,%%1,%%1,lsr#29\"\n"
868: "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" ((WORD)%s), \"r\" ((WORD)%s), \"r\" (shift) : \"cc\" );\n", value, src, dst);
869: printf ("\t*(ULONG*)®flags = ccr;\n");
870: return;
871: case sz_long:
872: printf ("\tULONG ccr, %s;\n", value);
873: printf ("\t__asm__(\"subs %%0,%%3,%%2\n\tmov %%1,r15\n\teor %%1,%%1,#0x20000000\n\torr %%1,%%1,%%1,lsr#29\"\n"
874: "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" ((LONG)%s), \"r\" ((LONG)%s) : \"cc\" );\n", value, src, dst);
875: printf ("\t*(ULONG*)®flags = ccr;\n");
876: return;
877: }
878: }
879: break;
880: case flag_cmp:
881: if(strcmp(dst,"0")==0)
882: {
883: printf ("/*Error! Hier muss Peter noch was machen !!! (CMP-Flags)*/");
884: }
885: else
886: {
887: start_brace();
888: switch (size)
889: {
890: case sz_byte:
891: printf ("\tULONG shift, ccr;\n");
892: printf ("\t__asm__(\"mov %%3,%%2,lsl#24\n\tcmp %%3,%%1,lsl#24\n\tmov %%0,r15,lsr#24\n\teor %%0,%%0,#0x20\"\n"
893: "\t: \"=r\" (ccr) : \"r\" (%s), \"r\" (%s), \"r\" (shift) : \"cc\" );\n", src, dst);
894: printf ("\t*((UBYTE*)®flags+3) = ccr;\n");
895: return;
896: case sz_word:
897: printf ("\tULONG shift, ccr;\n");
898: printf ("\t__asm__(\"mov %%3,%%2,lsl#16\n\tcmp %%3,%%1,lsl#16\n\tmov %%0,r15,lsr#24\n\teor %%0,%%0,#0x20\"\n"
899: "\t: \"=r\" (ccr) : \"r\" ((WORD)%s), \"r\" ((WORD)%s), \"r\" (shift) : \"cc\" );\n", src, dst);
900: printf ("\t*((UBYTE*)®flags+3) = ccr;\n");
901: return;
902: case sz_long:
903: printf ("\tULONG ccr;\n");
904: printf ("\t__asm__(\"cmp %%2,%%1\n\tmov %%0,r15,lsr#24\n\teor %%0,%%0,#0x20\"\n"
905: "\t: \"=r\" (ccr) : \"r\" ((LONG)%s), \"r\" ((LONG)%s) : \"cc\" );\n", src, dst);
906: printf ("\t*((UBYTE*)®flags+3) = ccr;\n");
907: /*printf ("\tprintf (\"%%08x %%08x %%08x\\n\", %s, %s, *((ULONG*)®flags));\n", src, dst);*/
908: return;
909: }
910: }
911: break;
912: }
1.1 root 913: #endif
914: genflags_normal(type, size, value, src, dst);
915: }
1.1.1.3 root 916:
917: static void gen_opcode(unsigned long int opcode)
1.1 root 918: {
919: start_brace ();
1.1.1.3 root 920: #if 0
921: printf ("uae_u8 *m68k_pc = regs.pc_p;\n");
922: #endif
923: m68k_pc_offset = 2;
1.1 root 924: switch (table68k[opcode].plev) {
1.1.1.3 root 925: case 0: /* not privileged */
1.1 root 926: break;
1.1.1.3 root 927: case 1: /* unprivileged only on 68000 */
928: if (cpu_level == 0)
1.1 root 929: break;
1.1.1.3 root 930: if (next_cpu_level < 0)
931: next_cpu_level = 0;
932:
1.1 root 933: /* FALLTHROUGH */
934: case 2: /* priviledged */
1.1.1.3 root 935: printf ("if (!regs.s) { Exception(8,0); goto %s; }\n", endlabelstr);
1.1 root 936: start_brace();
937: break;
1.1.1.3 root 938: case 3: /* privileged if size == word */
1.1 root 939: if (table68k[opcode].size == sz_byte)
940: break;
1.1.1.3 root 941: printf ("if (!regs.s) { Exception(8,0); goto %s; }\n", endlabelstr);
1.1 root 942: start_brace();
943: break;
944: }
945: switch(table68k[opcode].mnemo) {
946: case i_OR:
1.1.1.3 root 947: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
948: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 1, 0);
949: printf ("\tsrc |= dst;\n");
1.1 root 950: genflags(flag_logical, table68k[opcode].size, "src", "", "");
1.1.1.3 root 951: genastore ("src", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst");
1.1 root 952: break;
953: case i_AND:
1.1.1.3 root 954: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
955: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 1, 0);
956: printf ("\tsrc &= dst;\n");
1.1 root 957: genflags(flag_logical, table68k[opcode].size, "src", "", "");
1.1.1.3 root 958: genastore ("src", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst");
1.1 root 959: break;
960: case i_EOR:
1.1.1.3 root 961: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
962: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 1, 0);
963: printf ("\tsrc ^= dst;\n");
1.1 root 964: genflags(flag_logical, table68k[opcode].size, "src", "", "");
1.1.1.3 root 965: genastore ("src", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst");
1.1 root 966: break;
967: case i_ORSR:
1.1.1.3 root 968: printf ("\tMakeSR();\n");
969: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1.1 root 970: if (table68k[opcode].size == sz_byte) {
1.1.1.3 root 971: printf ("\tsrc &= 0xFF;\n");
1.1 root 972: }
1.1.1.3 root 973: printf ("\tregs.sr |= src;\n");
974: printf ("\tMakeFromSR();\n");
1.1 root 975: break;
1.1.1.3 root 976: case i_ANDSR:
977: printf ("\tMakeSR();\n");
978: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1.1 root 979: if (table68k[opcode].size == sz_byte) {
1.1.1.3 root 980: printf ("\tsrc |= 0xFF00;\n");
1.1 root 981: }
1.1.1.3 root 982: printf ("\tregs.sr &= src;\n");
983: printf ("\tMakeFromSR();\n");
1.1 root 984: break;
985: case i_EORSR:
1.1.1.3 root 986: printf ("\tMakeSR();\n");
987: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1.1 root 988: if (table68k[opcode].size == sz_byte) {
1.1.1.3 root 989: printf ("\tsrc &= 0xFF;\n");
1.1 root 990: }
1.1.1.3 root 991: printf ("\tregs.sr ^= src;\n");
992: printf ("\tMakeFromSR();\n");
1.1 root 993: break;
1.1.1.3 root 994: case i_SUB:
995: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
996: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 1, 0);
1.1 root 997: start_brace ();
998: genflags(flag_sub, table68k[opcode].size, "newv", "src", "dst");
1.1.1.3 root 999: genastore ("newv", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst");
1.1 root 1000: break;
1001: case i_SUBA:
1.1.1.3 root 1002: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1003: genamode (table68k[opcode].dmode, "dstreg", sz_long, "dst", 1, 0);
1.1 root 1004: start_brace ();
1.1.1.3 root 1005: printf ("\tuae_u32 newv = dst - src;\n");
1006: genastore ("newv", table68k[opcode].dmode, "dstreg", sz_long, "dst");
1.1 root 1007: break;
1008: case i_SUBX:
1.1.1.3 root 1009: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1010: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 1, 0);
1.1 root 1011: start_brace ();
1.1.1.3 root 1012: printf ("\tuae_u32 newv = dst - src - (XFLG ? 1 : 0);\n");
1.1 root 1013: genflags(flag_subx, table68k[opcode].size, "newv", "src", "dst");
1014: genflags(flag_zn, table68k[opcode].size, "newv", "", "");
1.1.1.3 root 1015: genastore ("newv", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst");
1.1 root 1016: break;
1017: case i_SBCD:
1018: /* Let's hope this works... */
1.1.1.3 root 1019: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1020: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 1, 0);
1.1 root 1021: start_brace ();
1.1.1.3 root 1022: printf ("\tuae_u16 newv_lo = (dst & 0xF) - (src & 0xF) - (XFLG ? 1 : 0);\n");
1023: printf ("\tuae_u16 newv_hi = (dst & 0xF0) - (src & 0xF0);\n");
1024: printf ("\tuae_u16 newv;\n");
1025: printf ("\tif (newv_lo > 9) { newv_lo-=6; newv_hi-=0x10; }\n");
1026: printf ("\tnewv = newv_hi + (newv_lo & 0xF);");
1027: printf ("\tCFLG = XFLG = (newv_hi & 0x1F0) > 0x90;\n");
1028: printf ("\tif (CFLG) newv -= 0x60;\n");
1029: genflags(flag_zn, table68k[opcode].size, "newv", "", "");
1030: genflags(flag_sv, table68k[opcode].size, "newv", "src", "dst");
1031: genastore ("newv", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst");
1.1 root 1032: break;
1033: case i_ADD:
1.1.1.3 root 1034: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1035: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 1, 0);
1.1 root 1036: start_brace ();
1037: genflags(flag_add, table68k[opcode].size, "newv", "src", "dst");
1.1.1.3 root 1038: genastore ("newv", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst");
1.1 root 1039: break;
1.1.1.3 root 1040: case i_ADDA:
1041: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1042: genamode (table68k[opcode].dmode, "dstreg", sz_long, "dst", 1, 0);
1.1 root 1043: start_brace ();
1.1.1.3 root 1044: printf ("\tuae_u32 newv = dst + src;\n");
1045: genastore ("newv", table68k[opcode].dmode, "dstreg", sz_long, "dst");
1.1 root 1046: break;
1047: case i_ADDX:
1.1.1.3 root 1048: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1049: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 1, 0);
1.1 root 1050: start_brace ();
1.1.1.3 root 1051: printf ("\tuae_u32 newv = dst + src + (XFLG ? 1 : 0);\n");
1.1 root 1052: genflags(flag_addx, table68k[opcode].size, "newv", "src", "dst");
1053: genflags(flag_zn, table68k[opcode].size, "newv", "", "");
1.1.1.3 root 1054: genastore ("newv", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst");
1.1 root 1055: break;
1056: case i_ABCD:
1.1.1.3 root 1057: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1058: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 1, 0);
1.1 root 1059: start_brace ();
1.1.1.3 root 1060: printf ("\tuae_u16 newv_lo = (src & 0xF) + (dst & 0xF) + (XFLG ? 1 : 0);\n");
1061: printf ("\tuae_u16 newv_hi = (src & 0xF0) + (dst & 0xF0);\n");
1062: printf ("\tuae_u16 newv;\n");
1063: printf ("\tif (newv_lo > 9) { newv_lo +=6; }\n");
1064: printf ("\tnewv = newv_hi + newv_lo;");
1065: printf ("\tCFLG = XFLG = (newv & 0x1F0) > 0x90;\n");
1066: printf ("\tif (CFLG) newv += 0x60;\n");
1.1 root 1067: genflags(flag_zn, table68k[opcode].size, "newv", "", "");
1.1.1.3 root 1068: genflags(flag_sv, table68k[opcode].size, "newv", "src", "dst");
1069: genastore ("newv", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst");
1.1 root 1070: break;
1071: case i_NEG:
1.1.1.3 root 1072: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1.1 root 1073: start_brace ();
1074: genflags(flag_sub, table68k[opcode].size, "dst", "src", "0");
1.1.1.3 root 1075: genastore ("dst",table68k[opcode].smode, "srcreg", table68k[opcode].size, "src");
1.1 root 1076: break;
1077: case i_NEGX:
1.1.1.3 root 1078: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1.1 root 1079: start_brace ();
1.1.1.3 root 1080: printf ("\tuae_u32 newv = 0 - src - (XFLG ? 1 : 0);\n");
1.1 root 1081: genflags(flag_subx, table68k[opcode].size, "newv", "src", "0");
1082: genflags(flag_zn, table68k[opcode].size, "newv", "", "");
1.1.1.3 root 1083: genastore ("newv", table68k[opcode].smode, "srcreg", table68k[opcode].size, "src");
1.1 root 1084: break;
1.1.1.3 root 1085: case i_NBCD:
1086: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1.1 root 1087: start_brace ();
1.1.1.3 root 1088: printf ("\tuae_u16 newv_lo = - (src & 0xF) - (XFLG ? 1 : 0);\n");
1089: printf ("\tuae_u16 newv_hi = - (src & 0xF0);\n");
1090: printf ("\tuae_u16 newv;\n");
1091: printf ("\tif (newv_lo > 9) { newv_lo-=6; newv_hi-=0x10; }\n");
1092: printf ("\tnewv = newv_hi + (newv_lo & 0xF);");
1093: printf ("\tCFLG = XFLG = (newv_hi & 0x1F0) > 0x90;\n");
1094: printf ("\tif (CFLG) newv -= 0x60;\n");
1.1 root 1095: genflags(flag_zn, table68k[opcode].size, "newv", "", "");
1.1.1.3 root 1096: genastore ("newv", table68k[opcode].smode, "srcreg", table68k[opcode].size, "src");
1.1 root 1097: break;
1.1.1.3 root 1098: case i_CLR:
1099: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 2, 0);
1.1 root 1100: genflags(flag_logical, table68k[opcode].size, "0", "", "");
1.1.1.3 root 1101: genastore ("0",table68k[opcode].smode, "srcreg", table68k[opcode].size, "src");
1.1 root 1102: break;
1.1.1.3 root 1103: case i_NOT:
1104: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1.1 root 1105: start_brace ();
1.1.1.3 root 1106: printf ("\tuae_u32 dst = ~src;\n");
1.1 root 1107: genflags(flag_logical, table68k[opcode].size, "dst", "", "");
1.1.1.3 root 1108: genastore ("dst",table68k[opcode].smode, "srcreg", table68k[opcode].size, "src");
1.1 root 1109: break;
1110: case i_TST:
1.1.1.3 root 1111: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1.1 root 1112: genflags(flag_logical, table68k[opcode].size, "src", "", "");
1113: break;
1114: case i_BTST:
1.1.1.3 root 1115: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1116: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 1, 0);
1.1 root 1117: if (table68k[opcode].size == sz_byte)
1.1.1.3 root 1118: printf ("\tsrc &= 7;\n");
1.1 root 1119: else
1.1.1.3 root 1120: printf ("\tsrc &= 31;\n");
1121: printf ("\tZFLG = !(dst & (1 << src));\n");
1.1 root 1122: break;
1123: case i_BCHG:
1.1.1.3 root 1124: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1125: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 1, 0);
1.1 root 1126: if (table68k[opcode].size == sz_byte)
1.1.1.3 root 1127: printf ("\tsrc &= 7;\n");
1.1 root 1128: else
1.1.1.3 root 1129: printf ("\tsrc &= 31;\n");
1130: printf ("\tZFLG = !(dst & (1 << src));\n");
1131: printf ("\tdst ^= (1 << src);\n");
1132: genastore ("dst", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst");
1.1 root 1133: break;
1134: case i_BCLR:
1.1.1.3 root 1135: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1136: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 1, 0);
1.1 root 1137: if (table68k[opcode].size == sz_byte)
1.1.1.3 root 1138: printf ("\tsrc &= 7;\n");
1.1 root 1139: else
1.1.1.3 root 1140: printf ("\tsrc &= 31;\n");
1141: printf ("\tZFLG = !(dst & (1 << src));\n");
1142: printf ("\tdst &= ~(1 << src);\n");
1143: genastore ("dst", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst");
1.1 root 1144: break;
1145: case i_BSET:
1.1.1.3 root 1146: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1147: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 1, 0);
1.1 root 1148: if (table68k[opcode].size == sz_byte)
1.1.1.3 root 1149: printf ("\tsrc &= 7;\n");
1.1 root 1150: else
1.1.1.3 root 1151: printf ("\tsrc &= 31;\n");
1152: printf ("\tZFLG = !(dst & (1 << src));\n");
1153: printf ("\tdst |= (1 << src);\n");
1154: genastore ("dst", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst");
1.1 root 1155: break;
1156: case i_CMPM:
1157: case i_CMP:
1.1.1.3 root 1158: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1159: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 1, 0);
1.1 root 1160: start_brace ();
1161: genflags(flag_cmp, table68k[opcode].size, "newv", "src", "dst");
1162: break;
1.1.1.3 root 1163: case i_CMPA:
1164: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1165: genamode (table68k[opcode].dmode, "dstreg", sz_long, "dst", 1, 0);
1.1 root 1166: start_brace ();
1167: genflags(flag_cmp, sz_long, "newv", "src", "dst");
1168: break;
1169: /* The next two are coded a little unconventional, but they are doing
1170: * weird things... */
1171: case i_MVPRM:
1.1.1.3 root 1172: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1.1.1.4 ! root 1173: printf ("\tuaecptr memp = m68k_areg(regs, dstreg) + (uae_s32)(uae_s16)%s;\n", gen_nextiword());
1.1 root 1174: if (table68k[opcode].size == sz_word) {
1.1.1.3 root 1175: printf ("\tput_byte(memp, src >> 8); put_byte(memp + 2, src);\n");
1.1 root 1176: } else {
1.1.1.3 root 1177: printf ("\tput_byte(memp, src >> 24); put_byte(memp + 2, src >> 16);\n");
1178: printf ("\tput_byte(memp + 4, src >> 8); put_byte(memp + 6, src);\n");
1.1 root 1179: }
1180: break;
1.1.1.3 root 1181: case i_MVPMR:
1.1.1.4 ! root 1182: printf ("\tuaecptr memp = m68k_areg(regs, srcreg) + (uae_s32)(uae_s16)%s;\n", gen_nextiword());
1.1.1.3 root 1183: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 2, 0);
1.1 root 1184: if (table68k[opcode].size == sz_word) {
1.1.1.3 root 1185: printf ("\tuae_u16 val = (get_byte(memp) << 8) + get_byte(memp + 2);\n");
1.1 root 1186: } else {
1.1.1.3 root 1187: printf ("\tuae_u32 val = (get_byte(memp) << 24) + (get_byte(memp + 2) << 16)\n");
1188: printf (" + (get_byte(memp + 4) << 8) + get_byte(memp + 6);\n");
1.1 root 1189: }
1.1.1.3 root 1190: genastore ("val", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst");
1.1 root 1191: break;
1192: case i_MOVE:
1.1.1.3 root 1193: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1194: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 2, 0);
1.1 root 1195: genflags(flag_logical, table68k[opcode].size, "src", "", "");
1.1.1.3 root 1196: genastore ("src", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst");
1.1 root 1197: break;
1198: case i_MOVEA:
1.1.1.3 root 1199: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1200: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 2, 0);
1.1 root 1201: if (table68k[opcode].size == sz_word) {
1.1.1.3 root 1202: printf ("\tuae_u32 val = (uae_s32)(uae_s16)src;\n");
1.1 root 1203: } else {
1.1.1.3 root 1204: printf ("\tuae_u32 val = src;\n");
1.1 root 1205: }
1.1.1.3 root 1206: genastore ("val", table68k[opcode].dmode, "dstreg", sz_long, "dst");
1.1 root 1207: break;
1.1.1.3 root 1208: case i_MVSR2:
1209: genamode (table68k[opcode].smode, "srcreg", sz_word, "src", 2, 0);
1210: printf ("\tMakeSR();\n");
1.1 root 1211: if (table68k[opcode].size == sz_byte)
1.1.1.3 root 1212: genastore ("regs.sr & 0xff", table68k[opcode].smode, "srcreg", sz_word, "src");
1.1 root 1213: else
1.1.1.3 root 1214: genastore ("regs.sr", table68k[opcode].smode, "srcreg", sz_word, "src");
1.1 root 1215: break;
1216: case i_MV2SR:
1.1.1.3 root 1217: genamode (table68k[opcode].smode, "srcreg", sz_word, "src", 1, 0);
1.1 root 1218: if (table68k[opcode].size == sz_byte)
1.1.1.3 root 1219: printf ("\tMakeSR();\n\tregs.sr &= 0xFF00;\n\tregs.sr |= src & 0xFF;\n");
1220: else {
1221: printf ("\tregs.sr = src;\n");
1.1 root 1222: }
1.1.1.3 root 1223: printf ("\tMakeFromSR();\n");
1.1 root 1224: break;
1.1.1.3 root 1225: case i_SWAP:
1226: genamode (table68k[opcode].smode, "srcreg", sz_long, "src", 1, 0);
1.1 root 1227: start_brace ();
1.1.1.3 root 1228: printf ("\tuae_u32 dst = ((src >> 16)&0xFFFF) | ((src&0xFFFF)<<16);\n");
1.1 root 1229: genflags(flag_logical, sz_long, "dst", "", "");
1.1.1.3 root 1230: genastore ("dst",table68k[opcode].smode, "srcreg", sz_long, "src");
1.1 root 1231: break;
1232: case i_EXG:
1.1.1.3 root 1233: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1234: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 1, 0);
1235: genastore ("dst",table68k[opcode].smode, "srcreg", table68k[opcode].size, "src");
1236: genastore ("src",table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst");
1.1 root 1237: break;
1238: case i_EXT:
1.1.1.3 root 1239: genamode (table68k[opcode].smode, "srcreg", sz_long, "src", 1, 0);
1.1 root 1240: start_brace ();
1241: switch(table68k[opcode].size) {
1.1.1.3 root 1242: case sz_byte: printf ("\tuae_u32 dst = (uae_s32)(uae_s8)src;\n"); break;
1243: case sz_word: printf ("\tuae_u16 dst = (uae_s16)(uae_s8)src;\n"); break;
1244: case sz_long: printf ("\tuae_u32 dst = (uae_s32)(uae_s16)src;\n"); break;
1.1 root 1245: default: abort();
1246: }
1247: genflags(flag_logical,
1.1.1.3 root 1248: table68k[opcode].size == sz_word ? sz_word : sz_long, "dst", "", "");
1249: genastore ("dst",table68k[opcode].smode, "srcreg",
1250: table68k[opcode].size == sz_word ? sz_word : sz_long, "src");
1.1 root 1251: break;
1252: case i_MVMEL:
1253: genmovemel(opcode);
1254: break;
1255: case i_MVMLE:
1256: genmovemle(opcode);
1257: break;
1258: case i_TRAP:
1.1.1.3 root 1259: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1260: sync_m68k_pc();
1261: printf ("\tException(src+32,0);\n");
1262: m68k_pc_offset = 0;
1.1 root 1263: break;
1264: case i_MVR2USP:
1.1.1.3 root 1265: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1266: printf ("\tregs.usp = src;\n");
1.1 root 1267: break;
1.1.1.3 root 1268: case i_MVUSP2R:
1269: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 2, 0);
1270: genastore ("regs.usp", table68k[opcode].smode, "srcreg", table68k[opcode].size, "src");
1.1 root 1271: break;
1272: case i_RESET:
1.1.1.3 root 1273: printf ("\tcustomreset();\n");
1.1 root 1274: break;
1275: case i_NOP:
1276: break;
1277: case i_STOP:
1.1.1.3 root 1278: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1279: printf ("\tregs.sr = src;\n");
1280: printf ("\tMakeFromSR();\n");
1281: printf ("\tm68k_setstopped(1);\n");
1.1 root 1282: break;
1283: case i_RTE:
1.1.1.3 root 1284: if (cpu_level == 0) {
1285: genamode (Aipi, "7", sz_word, "sr", 1, 0);
1286: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1287: printf ("\tregs.sr = sr; m68k_setpc_rte(pc);\n");
1288: fill_prefetch_0 ();
1289: printf ("\tMakeFromSR();\n");
1290: } else {
1.1 root 1291: int old_brace_level = n_braces;
1.1.1.3 root 1292: if (next_cpu_level < 0)
1293: next_cpu_level = 0;
1294: printf ("\tuae_u16 newsr; uae_u32 newpc; for (;;) {\n");
1295: genamode (Aipi, "7", sz_word, "sr", 1, 0);
1296: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1297: genamode (Aipi, "7", sz_word, "format", 1, 0);
1298: printf ("\tnewsr = sr; newpc = pc;\n");
1299: printf ("\tif ((format & 0xF000) == 0x0000) { break; }\n");
1300: printf ("\telse if ((format & 0xF000) == 0x1000) { ; }\n");
1301: printf ("\telse if ((format & 0xF000) == 0x2000) { m68k_areg(regs, 7) += 4; break; }\n");
1302: printf ("\telse if ((format & 0xF000) == 0x8000) { m68k_areg(regs, 7) += 50; break; }\n");
1303: printf ("\telse if ((format & 0xF000) == 0x9000) { m68k_areg(regs, 7) += 12; break; }\n");
1304: printf ("\telse if ((format & 0xF000) == 0xa000) { m68k_areg(regs, 7) += 24; break; }\n");
1305: printf ("\telse if ((format & 0xF000) == 0xb000) { m68k_areg(regs, 7) += 84; break; }\n");
1306: printf ("\telse { Exception(14,0); goto %s; }\n", endlabelstr);
1307: printf ("\tregs.sr = newsr; MakeFromSR();\n}\n");
1.1 root 1308: pop_braces (old_brace_level);
1.1.1.3 root 1309: printf ("\tregs.sr = newsr; MakeFromSR();\n");
1310: printf ("\tm68k_setpc_rte(newpc);\n");
1311: fill_prefetch_0 ();
1.1 root 1312: }
1.1.1.3 root 1313: /* PC is set and prefetch filled. */
1314: m68k_pc_offset = 0;
1.1 root 1315: break;
1316: case i_RTD:
1.1.1.3 root 1317: printf ("\tcompiler_flush_jsr_stack();\n");
1318: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1319: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "offs", 1, 0);
1320: printf ("\tm68k_areg(regs, 7) += offs;\n");
1321: printf ("\tm68k_setpc_rte(pc);\n");
1322: fill_prefetch_0 ();
1323: /* PC is set and prefetch filled. */
1324: m68k_pc_offset = 0;
1.1 root 1325: break;
1326: case i_LINK:
1.1.1.3 root 1327: genamode (Apdi, "7", sz_long, "old", 2, 0);
1328: genamode (table68k[opcode].smode, "srcreg", sz_long, "src", 1, 0);
1329: genastore ("src", Apdi, "7", sz_long, "old");
1330: genastore ("m68k_areg(regs, 7)", table68k[opcode].smode, "srcreg", sz_long, "src");
1331: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "offs", 1, 0);
1332: printf ("\tm68k_areg(regs, 7) += offs;\n");
1.1 root 1333: break;
1334: case i_UNLK:
1.1.1.3 root 1335: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1336: printf ("\tm68k_areg(regs, 7) = src;\n");
1337: genamode (Aipi, "7", sz_long, "old", 1, 0);
1338: genastore ("old", table68k[opcode].smode, "srcreg", table68k[opcode].size, "src");
1.1 root 1339: break;
1340: case i_RTS:
1.1.1.3 root 1341: printf ("\tm68k_do_rts();\n");
1342: fill_prefetch_0 ();
1343: m68k_pc_offset = 0;
1.1 root 1344: break;
1345: case i_TRAPV:
1.1.1.3 root 1346: sync_m68k_pc ();
1347: printf ("\tif(VFLG) { Exception(7,m68k_getpc()); goto %s; }\n", endlabelstr);
1.1 root 1348: break;
1.1.1.2 root 1349: case i_RTR:
1.1.1.3 root 1350: printf ("\tcompiler_flush_jsr_stack();\n");
1351: printf ("\tMakeSR();\n");
1352: genamode (Aipi, "7", sz_word, "sr", 1, 0);
1353: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1354: printf ("\tregs.sr &= 0xFF00; sr &= 0xFF;\n");
1355: printf ("\tregs.sr |= sr; m68k_setpc(pc);\n");
1356: fill_prefetch_0 ();
1357: printf ("\tMakeFromSR();\n");
1358: m68k_pc_offset = 0;
1.1 root 1359: break;
1360: case i_JSR:
1.1.1.3 root 1361: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 0, 0);
1362: printf ("\tm68k_do_jsr(m68k_getpc() + %d, srca);\n", m68k_pc_offset);
1363: fill_prefetch_0 ();
1364: m68k_pc_offset = 0;
1365: break;
1366: case i_JMP:
1367: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 0, 0);
1368: printf ("\tm68k_setpc(srca);\n");
1369: fill_prefetch_0 ();
1370: m68k_pc_offset = 0;
1.1 root 1371: break;
1372: case i_BSR:
1.1.1.3 root 1373: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1374: printf ("\tuae_s32 s = (uae_s32)src + 2;\n");
1375: if (using_exception_3) {
1376: printf ("\tif (src & 1) {\n");
1377: printf ("\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1378: printf ("\t\tlast_fault_for_exception_3 = m68k_getpc() + s;\n");
1379: printf ("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1380: printf ("\t}\n");
1381: }
1382:
1383: printf ("\tm68k_do_bsr(m68k_getpc() + %d, s);\n", m68k_pc_offset);
1384: fill_prefetch_0 ();
1385: m68k_pc_offset = 0;
1.1 root 1386: break;
1387: case i_Bcc:
1.1.1.3 root 1388: if (table68k[opcode].size == sz_long) {
1389: if (cpu_level < 2) {
1390: printf ("\tm68k_incpc(2);\n");
1391: printf ("\tif (!cctrue(%d)) goto %s;\n", table68k[opcode].cc, endlabelstr);
1392: printf ("\t\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1393: printf ("\t\tlast_fault_for_exception_3 = m68k_getpc() + 1;\n");
1394: printf ("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1395: } else {
1396: if (next_cpu_level < 1)
1397: next_cpu_level = 1;
1398: }
1399: }
1400:
1401: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1402: printf ("\tif (!cctrue(%d)) goto didnt_jump;\n", table68k[opcode].cc);
1403: if (using_exception_3) {
1404: printf ("\tif (src & 1) {\n");
1405: printf ("\t\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1406: printf ("\t\tlast_fault_for_exception_3 = m68k_getpc() + 2 + (uae_s32)src;\n");
1407: printf ("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1408: printf ("\t}\n");
1409: }
1.1 root 1410: #ifdef USE_COMPILER
1.1.1.3 root 1411: printf ("\tm68k_setpc_bcc(m68k_getpc() + 2 + (uae_s32)src);\n");
1.1 root 1412: #else
1.1.1.3 root 1413: printf ("\tm68k_incpc ((uae_s32)src + 2);\n");
1.1 root 1414: #endif
1.1.1.3 root 1415: fill_prefetch_0 ();
1416: printf ("\tgoto %s;\n", endlabelstr);
1417: printf ("didnt_jump:;\n");
1.1 root 1418: break;
1419: case i_LEA:
1.1.1.3 root 1420: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 0, 0);
1421: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 2, 0);
1422: genastore ("srca", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst");
1.1 root 1423: break;
1424: case i_PEA:
1.1.1.3 root 1425: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 0, 0);
1426: genamode (Apdi, "7", sz_long, "dst", 2, 0);
1427: genastore ("srca", Apdi, "7", sz_long, "dst");
1.1 root 1428: break;
1429: case i_DBcc:
1.1.1.3 root 1430: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1431: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "offs", 1, 0);
1432:
1433: printf ("\tif (!cctrue(%d)) {\n", table68k[opcode].cc);
1434: genastore ("(src-1)", table68k[opcode].smode, "srcreg", table68k[opcode].size, "src");
1435:
1436: printf ("\t\tif (src) {\n");
1437: if (using_exception_3) {
1438: printf ("\t\t\tif (offs & 1) {\n");
1439: printf ("\t\t\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1440: printf ("\t\t\tlast_fault_for_exception_3 = m68k_getpc() + 2 + (uae_s32)offs + 2;\n");
1441: printf ("\t\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1442: printf ("\t\t}\n");
1443: }
1444:
1.1 root 1445: #ifdef USE_COMPILER
1.1.1.3 root 1446: printf ("\t\t\tm68k_setpc_bcc(m68k_getpc() + (uae_s32)offs + 2);\n");
1.1 root 1447: #else
1.1.1.3 root 1448: printf ("\t\t\tm68k_incpc((uae_s32)offs + 2);\n");
1.1 root 1449: #endif
1.1.1.3 root 1450: fill_prefetch_0 ();
1451: printf ("\t\tgoto %s;\n", endlabelstr);
1452: printf ("\t\t}\n");
1453: printf ("\t}\n");
1.1 root 1454: break;
1.1.1.3 root 1455: case i_Scc:
1456: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 2, 0);
1.1 root 1457: start_brace ();
1.1.1.3 root 1458: printf ("\tint val = cctrue(%d) ? 0xff : 0;\n", table68k[opcode].cc);
1459: genastore ("val",table68k[opcode].smode, "srcreg", table68k[opcode].size, "src");
1.1 root 1460: break;
1461: case i_DIVU:
1.1.1.3 root 1462: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1463: genamode (table68k[opcode].smode, "srcreg", sz_word, "src", 1, 0);
1464: genamode (table68k[opcode].dmode, "dstreg", sz_long, "dst", 1, 0);
1465: printf ("\tif(src == 0) { Exception(5,oldpc); goto %s; } else {\n", endlabelstr);
1466: printf ("\tuae_u32 newv = (uae_u32)dst / (uae_u32)(uae_u16)src;\n");
1467: printf ("\tuae_u32 rem = (uae_u32)dst %% (uae_u32)(uae_u16)src;\n");
1.1 root 1468: /* The N flag appears to be set each time there is an overflow.
1469: * Weird. */
1.1.1.3 root 1470: printf ("\tif (newv > 0xffff) { VFLG = NFLG = 1; CFLG = 0; } else\n\t{\n");
1.1 root 1471: genflags(flag_logical, sz_word, "newv", "", "");
1.1.1.3 root 1472: printf ("\tnewv = (newv & 0xffff) | ((uae_u32)rem << 16);\n");
1473: genastore ("newv",table68k[opcode].dmode, "dstreg", sz_long, "dst");
1474: printf ("\t}\n");
1475: printf ("\t}\n");
1476: break;
1477: case i_DIVS:
1478: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1479: genamode (table68k[opcode].smode, "srcreg", sz_word, "src", 1, 0);
1480: genamode (table68k[opcode].dmode, "dstreg", sz_long, "dst", 1, 0);
1481: printf ("\tif(src == 0) { Exception(5,oldpc); goto %s; } else {\n", endlabelstr);
1482: printf ("\tuae_s32 newv = (uae_s32)dst / (uae_s32)(uae_s16)src;\n");
1483: printf ("\tuae_u16 rem = (uae_s32)dst %% (uae_s32)(uae_s16)src;\n");
1484: printf ("\tif ((newv & 0xffff8000) != 0 && (newv & 0xffff8000) != 0xffff8000) { VFLG = NFLG = 1; CFLG = 0; } else\n\t{\n");
1485: printf ("\tif (((uae_s16)rem < 0) != ((uae_s32)dst < 0)) rem = -rem;\n");
1.1 root 1486: genflags(flag_logical, sz_word, "newv", "", "");
1.1.1.3 root 1487: printf ("\tnewv = (newv & 0xffff) | ((uae_u32)rem << 16);\n");
1488: genastore ("newv",table68k[opcode].dmode, "dstreg", sz_long, "dst");
1489: printf ("\t}\n");
1490: printf ("\t}\n");
1491: break;
1492: case i_MULU:
1493: genamode (table68k[opcode].smode, "srcreg", sz_word, "src", 1, 0);
1494: genamode (table68k[opcode].dmode, "dstreg", sz_word, "dst", 1, 0);
1.1 root 1495: start_brace ();
1.1.1.3 root 1496: printf ("\tuae_u32 newv = (uae_u32)(uae_u16)dst * (uae_u32)(uae_u16)src;\n");
1.1 root 1497: genflags(flag_logical, sz_long, "newv", "", "");
1.1.1.3 root 1498: genastore ("newv",table68k[opcode].dmode, "dstreg", sz_long, "dst");
1.1 root 1499: #ifdef WANT_SLOW_MULTIPLY
1.1.1.3 root 1500: printf ("\tregs.spcflags |= SPCFLAG_EXTRA_CYCLES;\n");
1.1 root 1501: #endif
1502: break;
1503: case i_MULS:
1.1.1.3 root 1504: genamode (table68k[opcode].smode, "srcreg", sz_word, "src", 1, 0);
1505: genamode (table68k[opcode].dmode, "dstreg", sz_word, "dst", 1, 0);
1.1 root 1506: start_brace ();
1.1.1.3 root 1507: printf ("\tuae_u32 newv = (uae_s32)(uae_s16)dst * (uae_s32)(uae_s16)src;\n");
1.1 root 1508: genflags(flag_logical, sz_long, "newv", "", "");
1.1.1.3 root 1509: genastore ("newv",table68k[opcode].dmode, "dstreg", sz_long, "dst");
1.1 root 1510: #ifdef WANT_SLOW_MULTIPLY
1.1.1.3 root 1511: printf ("\tregs.spcflags |= SPCFLAG_EXTRA_CYCLES;\n");
1.1 root 1512: #endif
1513: break;
1514: case i_CHK:
1.1.1.3 root 1515: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1516: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1517: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 1, 0);
1518: printf ("\tif ((uae_s32)dst < 0) { NFLG=1; Exception(6,oldpc); goto %s; }\n", endlabelstr);
1519: printf ("\telse if (dst > src) { NFLG=0; Exception(6,oldpc); goto %s; }\n", endlabelstr);
1.1 root 1520: break;
1.1.1.3 root 1521:
1.1 root 1522: case i_CHK2:
1.1.1.3 root 1523: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1 root 1524: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "extra", 1, 0);
1.1.1.3 root 1525: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 2, 0);
1526: printf ("\t{uae_s32 upper,lower,reg = regs.regs[(extra >> 12) & 15];\n");
1.1 root 1527: switch (table68k[opcode].size) {
1.1.1.3 root 1528: case sz_byte:
1529: printf ("\tlower=(uae_s32)(uae_s8)get_byte(dsta); upper = (uae_s32)(uae_s8)get_byte(dsta+1);\n");
1530: printf ("\tif ((extra & 0x8000) == 0) reg = (uae_s32)(uae_s8)reg;\n");
1531: break;
1532: case sz_word:
1533: printf ("\tlower=(uae_s32)(uae_s16)get_word(dsta); upper = (uae_s32)(uae_s16)get_word(dsta+2);\n");
1534: printf ("\tif ((extra & 0x8000) == 0) reg = (uae_s32)(uae_s16)reg;\n");
1535: break;
1536: case sz_long:
1537: printf ("\tlower=get_long(dsta); upper = get_long(dsta+4);\n");
1538: break;
1539: default:
1540: abort();
1541: }
1542: printf ("\tZFLG=upper == reg || lower == reg;\n");
1543: printf ("\tCFLG=lower <= upper ? reg < lower || reg > upper : reg > upper || reg < lower;\n");
1544: printf ("\tif ((extra & 0x800) && CFLG) { Exception(6,oldpc); goto %s; }\n}\n", endlabelstr);
1545: break;
1546:
1547: case i_ASR:
1548: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "cnt", 1, 0);
1549: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "data", 1, 0);
1550: start_brace ();
1551: switch(table68k[opcode].size) {
1552: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1553: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1554: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1 root 1555: default: abort();
1556: }
1557: switch(table68k[opcode].size) {
1.1.1.3 root 1558: case sz_byte: printf ("\tuae_u32 cmask = 0x80;\n"); break;
1559: case sz_word: printf ("\tuae_u32 cmask = 0x8000;\n"); break;
1560: case sz_long: printf ("\tuae_u32 cmask = 0x80000000;\n"); break;
1561: default: abort();
1562: }
1563: printf ("\tuae_u32 sign = cmask & val;\n");
1564: printf ("\tcnt &= 63;\n");
1565: printf ("\tVFLG = 0;\n");
1566: printf ("\tif (!cnt) { CFLG = 0; } else {\n");
1567: printf ("\tif (cnt >= %d) {\n",bit_size(table68k[opcode].size));
1568: printf ("\t\tval = sign ? %s : 0;\n",bit_mask(table68k[opcode].size));
1569: printf ("\t\tCFLG=XFLG= sign ? 1 : 0;\n");
1570: printf ("\t} else {\n");
1571: printf ("\t\tCFLG=XFLG=(val >> (cnt-1)) & 1;\n");
1572: printf ("\t\tval >>= cnt;\n");
1573: printf ("\t\tif (sign) val |= %s << (%d - cnt);\n",
1574: bit_mask(table68k[opcode].size),
1575: bit_size(table68k[opcode].size));
1576: printf ("\t}}\n");
1577: printf ("\tNFLG = sign != 0;\n");
1578: printf ("\tZFLG = val == 0;\n");
1579: genastore ("val", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "data");
1.1 root 1580: break;
1581: case i_ASL:
1.1.1.3 root 1582: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "cnt", 1, 0);
1583: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "data", 1, 0);
1.1 root 1584: start_brace ();
1585: switch(table68k[opcode].size) {
1.1.1.3 root 1586: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1587: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1588: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1 root 1589: default: abort();
1590: }
1591: switch(table68k[opcode].size) {
1.1.1.3 root 1592: case sz_byte: printf ("\tuae_u32 cmask = 0x80;\n"); break;
1593: case sz_word: printf ("\tuae_u32 cmask = 0x8000;\n"); break;
1594: case sz_long: printf ("\tuae_u32 cmask = 0x80000000;\n"); break;
1.1 root 1595: default: abort();
1596: }
1.1.1.3 root 1597: printf ("\tcnt &= 63;\n");
1598: printf ("\tVFLG = 0;\n");
1599: printf ("\tif (!cnt) { CFLG = 0; } else {\n");
1600: printf ("\tif (cnt >= %d) {\n",bit_size(table68k[opcode].size));
1601: printf ("\t\tVFLG = val != 0;\n");
1602: printf ("\t\tCFLG=XFLG = cnt == %d ? val & 1 : 0;\n",
1.1 root 1603: bit_size(table68k[opcode].size));
1.1.1.3 root 1604: printf ("\t\tval = 0;\n");
1605: printf ("\t} else {\n");
1606: printf ("\t\tuae_u32 mask = (%s << (%d - cnt)) & %s;\n",
1607: bit_mask(table68k[opcode].size),
1608: bit_size(table68k[opcode].size)-1,
1609: bit_mask(table68k[opcode].size));
1610: printf ("\t\tCFLG=XFLG=(val << (cnt-1)) & cmask ? 1 : 0;\n");
1611: printf ("\t\tVFLG = (val & mask) != mask && (val & mask) != 0;\n");
1612: printf ("\t\tval <<= cnt;\n");
1613: printf ("\t}}\n");
1614: printf ("\tNFLG = (val&cmask) != 0;\n");
1615: printf ("\tZFLG = val == 0;\n");
1616: genastore ("val", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "data");
1.1 root 1617: break;
1618: case i_LSR:
1.1.1.3 root 1619: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "cnt", 1, 0);
1620: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "data", 1, 0);
1.1 root 1621: start_brace ();
1622: switch(table68k[opcode].size) {
1.1.1.3 root 1623: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1624: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1625: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1 root 1626: default: abort();
1627: }
1628: switch(table68k[opcode].size) {
1.1.1.3 root 1629: case sz_byte: printf ("\tuae_u32 cmask = 0x80;\n"); break;
1630: case sz_word: printf ("\tuae_u32 cmask = 0x8000;\n"); break;
1631: case sz_long: printf ("\tuae_u32 cmask = 0x80000000;\n"); break;
1.1 root 1632: default: abort();
1633: }
1.1.1.3 root 1634: printf ("\tcnt &= 63;\n");
1635: printf ("\tif (!cnt) { CFLG = 0; } else {\n");
1636: printf ("\tif (cnt >= %d) {\n",bit_size(table68k[opcode].size));
1637: printf ("\t\tCFLG=XFLG = cnt == %d ? (val & cmask ? 1 : 0) : 0;\n",
1638: bit_size(table68k[opcode].size));
1639: printf ("\t\tval = 0;\n");
1640: printf ("\t} else {\n");
1641: printf ("\t\tCFLG=XFLG=(val >> (cnt-1)) & 1;\n");
1642: printf ("\t\tval >>= cnt;\n");
1643: printf ("\t}}\n");
1644: printf ("\tNFLG = (val & cmask) != 0; ZFLG = val == 0; VFLG = 0;\n");
1645: genastore ("val", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "data");
1.1 root 1646: break;
1647: case i_LSL:
1.1.1.3 root 1648: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "cnt", 1, 0);
1649: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "data", 1, 0);
1.1 root 1650: start_brace ();
1651: switch(table68k[opcode].size) {
1.1.1.3 root 1652: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1653: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1654: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1 root 1655: default: abort();
1656: }
1657: switch(table68k[opcode].size) {
1.1.1.3 root 1658: case sz_byte: printf ("\tuae_u32 cmask = 0x80;\n"); break;
1659: case sz_word: printf ("\tuae_u32 cmask = 0x8000;\n"); break;
1660: case sz_long: printf ("\tuae_u32 cmask = 0x80000000;\n"); break;
1.1 root 1661: default: abort();
1662: }
1.1.1.3 root 1663: printf ("\tcnt &= 63;\n");
1664: printf ("\tif (!cnt) { CFLG = 0; } else {\n");
1665: printf ("\tif (cnt >= %d) {\n",bit_size(table68k[opcode].size));
1666: printf ("\t\tCFLG=XFLG = cnt == %d ? val & 1 : 0;\n",
1667: bit_size(table68k[opcode].size));
1668: printf ("\t\tval = 0;\n");
1669: printf ("\t} else {\n");
1670: printf ("\t\tCFLG=XFLG=(val << (cnt-1)) & cmask ? 1 : 0;\n");
1671: printf ("\t\tval <<= cnt;\n");
1672: printf ("\t}}\n");
1673: printf ("\tNFLG = (val & cmask) != 0; ZFLG = val == 0; VFLG = 0;\n");
1674: genastore ("val", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "data");
1.1 root 1675: break;
1676: case i_ROL:
1.1.1.3 root 1677: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "cnt", 1, 0);
1678: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "data", 1, 0);
1.1 root 1679: start_brace ();
1680: switch(table68k[opcode].size) {
1.1.1.3 root 1681: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1682: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1683: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1 root 1684: default: abort();
1685: }
1686: switch(table68k[opcode].size) {
1.1.1.3 root 1687: case sz_byte: printf ("\tuae_u32 cmask = 0x80;\n"); break;
1688: case sz_word: printf ("\tuae_u32 cmask = 0x8000;\n"); break;
1689: case sz_long: printf ("\tuae_u32 cmask = 0x80000000;\n"); break;
1.1 root 1690: default: abort();
1691: }
1.1.1.3 root 1692: printf ("\tcnt &= 63;\n");
1693: printf ("\tif (!cnt) { CFLG = 0; } else {\n");
1694: printf ("\tuae_u32 carry;\n");
1695: printf ("\tfor(;cnt;--cnt){\n");
1696: printf ("\tcarry=val&cmask; val <<= 1;\n");
1697: printf ("\tif(carry) val |= 1;\n");
1698: printf ("\t}\n");
1699: printf ("\tCFLG = carry!=0;\n}\n");
1700: printf ("\tNFLG = (val & cmask) != 0; ZFLG = val == 0; VFLG = 0;\n");
1701: genastore ("val", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "data");
1.1 root 1702: break;
1703: case i_ROR:
1.1.1.3 root 1704: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "cnt", 1, 0);
1705: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "data", 1, 0);
1.1 root 1706: start_brace ();
1707: switch(table68k[opcode].size) {
1.1.1.3 root 1708: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1709: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1710: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1 root 1711: default: abort();
1712: }
1713: switch(table68k[opcode].size) {
1.1.1.3 root 1714: case sz_byte: printf ("\tuae_u32 cmask = 0x80;\n"); break;
1715: case sz_word: printf ("\tuae_u32 cmask = 0x8000;\n"); break;
1716: case sz_long: printf ("\tuae_u32 cmask = 0x80000000;\n"); break;
1.1 root 1717: default: abort();
1718: }
1.1.1.3 root 1719: printf ("\tcnt &= 63;\n");
1720: printf ("\tif (!cnt) { CFLG = 0; } else {");
1721: printf ("\tuae_u32 carry;\n");
1722: printf ("\tfor(;cnt;--cnt){\n");
1723: printf ("\tcarry=val&1; val = val >> 1;\n");
1724: printf ("\tif(carry) val |= cmask;\n");
1725: printf ("\t}\n");
1726: printf ("\tCFLG = carry;\n}\n");
1727: printf ("\tNFLG = (val & cmask) != 0; ZFLG = val == 0; VFLG = 0;\n");
1728: genastore ("val", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "data");
1.1 root 1729: break;
1.1.1.3 root 1730: case i_ROXL:
1731: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "cnt", 1, 0);
1732: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "data", 1, 0);
1.1 root 1733: start_brace ();
1734: switch(table68k[opcode].size) {
1.1.1.3 root 1735: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1736: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1737: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1 root 1738: default: abort();
1739: }
1740: switch(table68k[opcode].size) {
1.1.1.3 root 1741: case sz_byte: printf ("\tuae_u32 cmask = 0x80;\n"); break;
1742: case sz_word: printf ("\tuae_u32 cmask = 0x8000;\n"); break;
1743: case sz_long: printf ("\tuae_u32 cmask = 0x80000000;\n"); break;
1.1 root 1744: default: abort();
1745: }
1.1.1.3 root 1746: printf ("\tuae_u32 carry;\n");
1747: printf ("\tcnt &= 63;\n");
1748: printf ("\tfor(;cnt;--cnt){\n");
1749: printf ("\tcarry=val&cmask; val <<= 1;\n");
1750: printf ("\tif(XFLG) val |= 1;\n");
1751: printf ("\tXFLG = carry != 0;\n");
1752: printf ("\t}\n");
1753: printf ("\tCFLG = XFLG;\n");
1754: printf ("\tNFLG = (val & cmask) != 0; ZFLG = val == 0; VFLG = 0;\n");
1755: genastore ("val", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "data");
1.1 root 1756: break;
1757: case i_ROXR:
1.1.1.3 root 1758: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "cnt", 1, 0);
1759: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "data", 1, 0);
1.1 root 1760: start_brace ();
1761: switch(table68k[opcode].size) {
1.1.1.3 root 1762: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1763: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1764: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1 root 1765: default: abort();
1766: }
1767: switch(table68k[opcode].size) {
1.1.1.3 root 1768: case sz_byte: printf ("\tuae_u32 cmask = 0x80;\n"); break;
1769: case sz_word: printf ("\tuae_u32 cmask = 0x8000;\n"); break;
1770: case sz_long: printf ("\tuae_u32 cmask = 0x80000000;\n"); break;
1.1 root 1771: default: abort();
1772: }
1.1.1.3 root 1773: printf ("\tuae_u32 carry;\n");
1774: printf ("\tcnt &= 63;\n");
1775: printf ("\tfor(;cnt;--cnt){\n");
1776: printf ("\tcarry=val&1; val >>= 1;\n");
1777: printf ("\tif(XFLG) val |= cmask;\n");
1778: printf ("\tXFLG = carry;\n");
1779: printf ("\t}\n");
1780: printf ("\tCFLG = XFLG;\n");
1781: printf ("\tNFLG = (val & cmask) != 0; ZFLG = val == 0; VFLG = 0;\n");
1782: genastore ("val", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "data");
1.1 root 1783: break;
1784: case i_ASRW:
1.1.1.3 root 1785: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "data", 1, 0);
1786: printf ("\tVFLG = 0;\n");
1.1 root 1787: start_brace ();
1788: switch(table68k[opcode].size) {
1.1.1.3 root 1789: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1790: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1791: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1 root 1792: default: abort();
1793: }
1794: switch(table68k[opcode].size) {
1.1.1.3 root 1795: case sz_byte: printf ("\tuae_u32 cmask = 0x80;\n"); break;
1796: case sz_word: printf ("\tuae_u32 cmask = 0x8000;\n"); break;
1797: case sz_long: printf ("\tuae_u32 cmask = 0x80000000;\n"); break;
1.1 root 1798: default: abort();
1799: }
1.1.1.3 root 1800: printf ("\tuae_u32 sign = cmask & val;\n");
1801: printf ("\tCFLG=XFLG=val&1; val = (val >> 1) | sign;\n");
1802: printf ("\tNFLG = sign != 0;\n");
1803: printf ("\tZFLG = val == 0;\n");
1804: genastore ("val", table68k[opcode].smode, "srcreg", table68k[opcode].size, "data");
1.1 root 1805: break;
1806: case i_ASLW:
1.1.1.3 root 1807: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "data", 1, 0);
1808: printf ("\tVFLG = 0;\n");
1.1 root 1809: start_brace ();
1810: switch(table68k[opcode].size) {
1.1.1.3 root 1811: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1812: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1813: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1 root 1814: default: abort();
1815: }
1816: switch(table68k[opcode].size) {
1.1.1.3 root 1817: case sz_byte: printf ("\tuae_u32 cmask = 0x80;\n"); break;
1818: case sz_word: printf ("\tuae_u32 cmask = 0x8000;\n"); break;
1819: case sz_long: printf ("\tuae_u32 cmask = 0x80000000;\n"); break;
1.1 root 1820: default: abort();
1821: }
1.1.1.3 root 1822: printf ("\tuae_u32 sign = cmask & val;\n");
1823: printf ("\tCFLG=XFLG=(val&cmask)!=0; val <<= 1;\n");
1824: printf ("\tif ((val&cmask)!=sign) VFLG=1;\n");
1825: printf ("\tNFLG = (val&cmask) != 0;\n");
1826: printf ("\tZFLG = val == 0;\n");
1827: genastore ("val", table68k[opcode].smode, "srcreg", table68k[opcode].size, "data");
1.1 root 1828: break;
1829: case i_LSRW:
1.1.1.3 root 1830: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "data", 1, 0);
1.1 root 1831: start_brace ();
1832: switch(table68k[opcode].size) {
1.1.1.3 root 1833: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1834: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1835: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1 root 1836: default: abort();
1837: }
1.1.1.3 root 1838: printf ("\tuae_u32 carry = val&1;\n");
1839: printf ("\tval >>= 1;\n");
1.1 root 1840: genflags(flag_logical, table68k[opcode].size, "val", "", "");
1.1.1.3 root 1841: printf ("CFLG = XFLG = carry!=0;\n");
1842: genastore ("val", table68k[opcode].smode, "srcreg", table68k[opcode].size, "data");
1.1 root 1843: break;
1844: case i_LSLW:
1.1.1.3 root 1845: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "data", 1, 0);
1.1 root 1846: start_brace ();
1847: switch(table68k[opcode].size) {
1.1.1.3 root 1848: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1849: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1850: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1 root 1851: default: abort();
1852: }
1853: switch(table68k[opcode].size) {
1.1.1.3 root 1854: case sz_byte: printf ("\tuae_u32 cmask = 0x80;\n"); break;
1855: case sz_word: printf ("\tuae_u32 cmask = 0x8000;\n"); break;
1856: case sz_long: printf ("\tuae_u32 cmask = 0x80000000;\n"); break;
1.1 root 1857: default: abort();
1858: }
1.1.1.3 root 1859: printf ("\tuae_u32 carry = val&cmask;\n");
1860: printf ("\tval <<= 1;\n");
1.1 root 1861: genflags(flag_logical, table68k[opcode].size, "val", "", "");
1.1.1.3 root 1862: printf ("CFLG = XFLG = carry!=0;\n");
1863: genastore ("val", table68k[opcode].smode, "srcreg", table68k[opcode].size, "data");
1.1 root 1864: break;
1865: case i_ROLW:
1.1.1.3 root 1866: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "data", 1, 0);
1.1 root 1867: start_brace ();
1868: switch(table68k[opcode].size) {
1.1.1.3 root 1869: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1870: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1871: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1 root 1872: default: abort();
1873: }
1874: switch(table68k[opcode].size) {
1.1.1.3 root 1875: case sz_byte: printf ("\tuae_u32 cmask = 0x80;\n"); break;
1876: case sz_word: printf ("\tuae_u32 cmask = 0x8000;\n"); break;
1877: case sz_long: printf ("\tuae_u32 cmask = 0x80000000;\n"); break;
1.1 root 1878: default: abort();
1879: }
1.1.1.3 root 1880: printf ("\tuae_u32 carry = val&cmask;\n");
1881: printf ("\tval <<= 1;\n");
1882: printf ("\tif(carry) val |= 1;\n");
1.1 root 1883: genflags(flag_logical, table68k[opcode].size, "val", "", "");
1.1.1.3 root 1884: printf ("CFLG = carry!=0;\n");
1885: genastore ("val", table68k[opcode].smode, "srcreg", table68k[opcode].size, "data");
1.1 root 1886: break;
1887: case i_RORW:
1.1.1.3 root 1888: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "data", 1, 0);
1.1 root 1889: start_brace ();
1890: switch(table68k[opcode].size) {
1.1.1.3 root 1891: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1892: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1893: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1 root 1894: default: abort();
1895: }
1.1.1.3 root 1896: printf ("\tuae_u32 carry = val&1;\n");
1.1 root 1897: switch(table68k[opcode].size) {
1.1.1.3 root 1898: case sz_byte: printf ("\tuae_u32 cmask = 0x80;\n"); break;
1899: case sz_word: printf ("\tuae_u32 cmask = 0x8000;\n"); break;
1900: case sz_long: printf ("\tuae_u32 cmask = 0x80000000;\n"); break;
1.1 root 1901: default: abort();
1902: }
1.1.1.3 root 1903: printf ("\tval >>= 1;\n");
1904: printf ("\tif(carry) val |= cmask;\n");
1.1 root 1905: genflags(flag_logical, table68k[opcode].size, "val", "", "");
1.1.1.3 root 1906: printf ("CFLG = carry!=0;\n");
1907: genastore ("val", table68k[opcode].smode, "srcreg", table68k[opcode].size, "data");
1.1 root 1908: break;
1909: case i_ROXLW:
1.1.1.3 root 1910: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "data", 1, 0);
1.1 root 1911: start_brace ();
1912: switch(table68k[opcode].size) {
1.1.1.3 root 1913: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1914: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1915: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1 root 1916: default: abort();
1917: }
1918: switch(table68k[opcode].size) {
1.1.1.3 root 1919: case sz_byte: printf ("\tuae_u32 cmask = 0x80;\n"); break;
1920: case sz_word: printf ("\tuae_u32 cmask = 0x8000;\n"); break;
1921: case sz_long: printf ("\tuae_u32 cmask = 0x80000000;\n"); break;
1.1 root 1922: default: abort();
1923: }
1.1.1.3 root 1924: printf ("\tuae_u32 carry = val&cmask;\n");
1925: printf ("\tval <<= 1;\n");
1926: printf ("\tif(XFLG) val |= 1;\n");
1927: printf ("\tXFLG = carry != 0;\n");
1.1 root 1928: genflags(flag_logical, table68k[opcode].size, "val", "", "");
1.1.1.3 root 1929: printf ("XFLG = CFLG = carry!=0;\n");
1930: genastore ("val", table68k[opcode].smode, "srcreg", table68k[opcode].size, "data");
1.1 root 1931: break;
1932: case i_ROXRW:
1.1.1.3 root 1933: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "data", 1, 0);
1.1 root 1934: start_brace ();
1935: switch(table68k[opcode].size) {
1.1.1.3 root 1936: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1937: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1938: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1 root 1939: default: abort();
1940: }
1.1.1.3 root 1941: printf ("\tuae_u32 carry = val&1;\n");
1.1 root 1942: switch(table68k[opcode].size) {
1.1.1.3 root 1943: case sz_byte: printf ("\tuae_u32 cmask = 0x80;\n"); break;
1944: case sz_word: printf ("\tuae_u32 cmask = 0x8000;\n"); break;
1945: case sz_long: printf ("\tuae_u32 cmask = 0x80000000;\n"); break;
1.1 root 1946: default: abort();
1947: }
1.1.1.3 root 1948: printf ("\tval >>= 1;\n");
1949: printf ("\tif(XFLG) val |= cmask;\n");
1950: printf ("\tXFLG = carry != 0;\n");
1.1 root 1951: genflags(flag_logical, table68k[opcode].size, "val", "", "");
1.1.1.3 root 1952: printf ("XFLG = CFLG = carry!=0;\n");
1953: genastore ("val", table68k[opcode].smode, "srcreg", table68k[opcode].size, "data");
1.1 root 1954: break;
1955: case i_MOVEC2:
1956: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1957: start_brace();
1.1.1.3 root 1958: printf ("\tint regno = (src >> 12) & 15;\n");
1959: printf ("\tuae_u32 *regp = regs.regs + regno;\n");
1960: printf ("\tm68k_movec2(src & 0xFFF, regp);\n");
1.1 root 1961: break;
1962: case i_MOVE2C:
1963: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1964: start_brace();
1.1.1.3 root 1965: printf ("\tint regno = (src >> 12) & 15;\n");
1966: printf ("\tuae_u32 *regp = regs.regs + regno;\n");
1967: printf ("\tm68k_move2c(src & 0xFFF, regp);\n");
1.1 root 1968: break;
1969: case i_CAS:
1970: {
1971: int old_brace_level;
1972: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1973: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 1, 0);
1974: start_brace();
1.1.1.3 root 1975: printf ("\tint ru = (src >> 6) & 7;\n");
1976: printf ("\tint rc = src & 7;\n");
1.1.1.2 root 1977: genflags(flag_cmp, table68k[opcode].size, "newv", "m68k_dreg(regs, rc)", "dst");
1.1.1.3 root 1978: printf ("\tif (ZFLG)");
1.1 root 1979: old_brace_level = n_braces;
1980: start_brace ();
1.1.1.3 root 1981: genastore ("(m68k_dreg(regs, ru))",table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst");
1.1 root 1982: pop_braces (old_brace_level);
1.1.1.3 root 1983: printf ("else");
1.1 root 1984: start_brace ();
1.1.1.3 root 1985: printf ("m68k_dreg(regs, rc) = dst;\n");
1.1 root 1986: pop_braces (old_brace_level);
1987: }
1988: break;
1989: case i_CAS2:
1990: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "extra", 1, 0);
1.1.1.3 root 1991: printf ("\tuae_u32 rn1 = regs.regs[(extra >> 28) & 7];\n");
1992: printf ("\tuae_u32 rn2 = regs.regs[(extra >> 12) & 7];\n");
1.1 root 1993: if (table68k[opcode].size == sz_word) {
1994: int old_brace_level = n_braces;
1.1.1.3 root 1995: printf ("\tuae_u16 dst1 = get_word(rn1), dst2 = get_word(rn2);\n");
1.1.1.2 root 1996: genflags(flag_cmp, table68k[opcode].size, "newv", "m68k_dreg(regs, (extra >> 16) & 7)", "dst1");
1.1.1.3 root 1997: printf ("\tif (ZFLG) {\n");
1.1.1.2 root 1998: genflags(flag_cmp, table68k[opcode].size, "newv", "m68k_dreg(regs, extra & 7)", "dst2");
1.1.1.3 root 1999: printf ("\tif (ZFLG) {\n");
2000: printf ("\tput_word(rn1, m68k_dreg(regs, (extra >> 22) & 7));\n");
2001: printf ("\tput_word(rn1, m68k_dreg(regs, (extra >> 6) & 7));\n");
2002: printf ("\t}}\n");
1.1 root 2003: pop_braces (old_brace_level);
1.1.1.3 root 2004: printf ("\tif (!ZFLG) {\n");
2005: printf ("\tm68k_dreg(regs, (extra >> 22) & 7) = (m68k_dreg(regs, (extra >> 22) & 7) & ~0xffff) | (dst1 & 0xffff);\n");
2006: printf ("\tm68k_dreg(regs, (extra >> 6) & 7) = (m68k_dreg(regs, (extra >> 6) & 7) & ~0xffff) | (dst2 & 0xffff);\n");
2007: printf ("\t}\n");
1.1 root 2008: } else {
2009: int old_brace_level = n_braces;
1.1.1.3 root 2010: printf ("\tuae_u32 dst1 = get_long(rn1), dst2 = get_long(rn2);\n");
1.1.1.2 root 2011: genflags(flag_cmp, table68k[opcode].size, "newv", "m68k_dreg(regs, (extra >> 16) & 7)", "dst1");
1.1.1.3 root 2012: printf ("\tif (ZFLG) {\n");
1.1.1.2 root 2013: genflags(flag_cmp, table68k[opcode].size, "newv", "m68k_dreg(regs, extra & 7)", "dst2");
1.1.1.3 root 2014: printf ("\tif (ZFLG) {\n");
2015: printf ("\tput_long(rn1, m68k_dreg(regs, (extra >> 22) & 7));\n");
2016: printf ("\tput_long(rn1, m68k_dreg(regs, (extra >> 6) & 7));\n");
2017: printf ("\t}}\n");
1.1 root 2018: pop_braces (old_brace_level);
1.1.1.3 root 2019: printf ("\tif (!ZFLG) {\n");
2020: printf ("\tm68k_dreg(regs, (extra >> 22) & 7) = dst1;\n");
2021: printf ("\tm68k_dreg(regs, (extra >> 6) & 7) = dst2;\n");
2022: printf ("\t}\n");
1.1 root 2023: }
2024: break;
2025: case i_MOVES: /* ignore DFC and SFC because we have no MMU */
2026: {
2027: int old_brace_level;
2028: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "extra", 1, 0);
1.1.1.3 root 2029: printf ("\tif (extra & 0x800)\n");
1.1 root 2030: old_brace_level = n_braces;
2031: start_brace ();
1.1.1.3 root 2032: printf ("\tuae_u32 src = regs.regs[(extra >> 12) & 15];\n");
2033: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 2, 0);
2034: genastore ("src", table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst");
1.1 root 2035: pop_braces (old_brace_level);
1.1.1.3 root 2036: printf ("else");
1.1 root 2037: start_brace ();
1.1.1.3 root 2038: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 1, 0);
2039: printf ("\tif (extra & 0x8000) {\n");
1.1 root 2040: switch(table68k[opcode].size) {
1.1.1.3 root 2041: case sz_byte: printf ("\tm68k_areg(regs, (extra >> 12) & 7) = (uae_s32)(uae_s8)src;\n"); break;
2042: case sz_word: printf ("\tm68k_areg(regs, (extra >> 12) & 7) = (uae_s32)(uae_s16)src;\n"); break;
2043: case sz_long: printf ("\tm68k_areg(regs, (extra >> 12) & 7) = src;\n"); break;
1.1 root 2044: default: abort();
2045: }
1.1.1.3 root 2046: printf ("\t} else {\n");
2047: genastore ("src", Dreg, "(extra >> 12) & 7", table68k[opcode].size, "");
2048: printf ("\t}\n");
1.1 root 2049: pop_braces (old_brace_level);
2050: }
2051: break;
2052: case i_BKPT: /* only needed for hardware emulators */
1.1.1.3 root 2053: sync_m68k_pc();
2054: printf ("\top_illg(opcode);\n");
1.1 root 2055: break;
2056: case i_CALLM: /* not present in 68030 */
1.1.1.3 root 2057: sync_m68k_pc();
2058: printf ("\top_illg(opcode);\n");
1.1 root 2059: break;
2060: case i_RTM: /* not present in 68030 */
1.1.1.3 root 2061: sync_m68k_pc();
2062: printf ("\top_illg(opcode);\n");
1.1 root 2063: break;
2064: case i_TRAPcc:
2065: if (table68k[opcode].smode != am_unknown && table68k[opcode].smode != am_illg)
2066: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "dummy", 1, 0);
1.1.1.3 root 2067: printf ("\tif (cctrue(%d)) { Exception(7,m68k_getpc()); goto %s; }\n", table68k[opcode].cc, endlabelstr);
1.1 root 2068: break;
2069: case i_DIVL:
1.1.1.3 root 2070: sync_m68k_pc ();
2071: start_brace ();
2072: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1 root 2073: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "extra", 1, 0);
2074: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 1, 0);
1.1.1.3 root 2075: sync_m68k_pc();
2076: printf ("\tm68k_divl(opcode, dst, extra, oldpc);\n");
1.1 root 2077: break;
2078: case i_MULL:
2079: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "extra", 1, 0);
2080: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 1, 0);
1.1.1.3 root 2081: sync_m68k_pc();
2082: printf ("\tm68k_mull(opcode, dst, extra);\n");
1.1 root 2083: break;
2084: case i_BFTST:
2085: case i_BFEXTU:
2086: case i_BFCHG:
2087: case i_BFEXTS:
2088: case i_BFCLR:
2089: case i_BFFFO:
2090: case i_BFSET:
2091: case i_BFINS:
2092: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "extra", 1, 0);
1.1.1.3 root 2093: genamode (table68k[opcode].dmode, "dstreg", sz_long, "dst", 2, 0);
1.1 root 2094: start_brace();
1.1.1.3 root 2095: printf ("\tuae_s32 offset = extra & 0x800 ? m68k_dreg(regs, (extra >> 6) & 7) : (extra >> 6) & 0x1f;\n");
2096: printf ("\tint width = (((extra & 0x20 ? m68k_dreg(regs, extra & 7) : extra) -1) & 0x1f) +1;\n");
1.1 root 2097: if (table68k[opcode].dmode == Dreg) {
1.1.1.3 root 2098: printf ("\tuae_u32 tmp = m68k_dreg(regs, dstreg) << (offset & 0x1f);\n");
2099: } else {
2100: printf ("\tuae_u32 tmp,bf0,bf1;\n");
2101: printf ("\tdsta += (offset >> 3) | (offset & 0x80000000 ? ~0x1fffffff : 0);\n");
2102: printf ("\tbf0 = get_long(dsta);bf1 = get_byte(dsta+4) & 0xff;\n");
2103: printf ("\ttmp = (bf0 << (offset & 7)) | (bf1 >> (8 - (offset & 7)));\n");
2104: }
2105: printf ("\ttmp >>= (32 - width);\n");
2106: printf ("\tNFLG = tmp & (1 << (width-1)) ? 1 : 0;ZFLG = tmp == 0;VFLG = 0;CFLG = 0;\n");
2107: switch(table68k[opcode].mnemo) {
2108: case i_BFTST:
2109: break;
2110: case i_BFEXTU:
2111: printf ("\tm68k_dreg(regs, (extra >> 12) & 7) = tmp;\n");
2112: break;
2113: case i_BFCHG:
2114: printf ("\ttmp = ~tmp;\n");
2115: break;
2116: case i_BFEXTS:
2117: printf ("\tif (NFLG) tmp |= width == 32 ? 0 : (-1 << width);\n");
2118: printf ("\tm68k_dreg(regs, (extra >> 12) & 7) = tmp;\n");
2119: break;
2120: case i_BFCLR:
2121: printf ("\ttmp = 0;\n");
2122: break;
2123: case i_BFFFO:
2124: printf ("\t{ uae_u32 mask = 1 << (width-1);\n");
2125: printf ("\twhile (mask) { if (tmp & mask) break; mask >>= 1; offset++; }}\n");
2126: printf ("\tm68k_dreg(regs, (extra >> 12) & 7) = offset;\n");
2127: break;
2128: case i_BFSET:
2129: printf ("\ttmp = 0xffffffff;\n");
2130: break;
2131: case i_BFINS:
2132: printf ("\ttmp = m68k_dreg(regs, (extra >> 12) & 7);\n");
2133: break;
2134: default:
2135: break;
1.1 root 2136: }
2137: if (table68k[opcode].mnemo == i_BFCHG ||
2138: table68k[opcode].mnemo == i_BFCLR ||
2139: table68k[opcode].mnemo == i_BFSET ||
2140: table68k[opcode].mnemo == i_BFINS) {
1.1.1.3 root 2141: printf ("\ttmp <<= (32 - width);\n");
1.1 root 2142: if (table68k[opcode].dmode == Dreg) {
1.1.1.3 root 2143: printf ("\tm68k_dreg(regs, dstreg) = (m68k_dreg(regs, dstreg) & ((offset & 0x1f) == 0 ? 0 :\n");
2144: printf ("\t\t(0xffffffff << (32 - (offset & 0x1f))))) |\n");
2145: printf ("\t\t(tmp >> (offset & 0x1f)) |\n");
2146: printf ("\t\t(((offset & 0x1f) + width) >= 32 ? 0 :\n");
2147: printf (" (m68k_dreg(regs, dstreg) & ((uae_u32)0xffffffff >> ((offset & 0x1f) + width))));\n");
2148: } else {
2149: printf ("\tbf0 = (bf0 & (0xff000000 << (8 - (offset & 7)))) |\n");
2150: printf ("\t\t(tmp >> (offset & 7)) |\n");
2151: printf ("\t\t(((offset & 7) + width) >= 32 ? 0 :\n");
2152: printf ("\t\t (bf0 & ((uae_u32)0xffffffff >> ((offset & 7) + width))));\n");
2153: printf ("\tput_long(dsta,bf0 );\n");
2154: printf ("\tif (((offset & 7) + width) > 32) {\n");
2155: printf ("\t\tbf1 = (bf1 & (0xff >> (width - 32 + (offset & 7)))) |\n");
2156: printf ("\t\t\t(tmp << (8 - (offset & 7)));\n");
2157: printf ("\t\tput_byte(dsta+4,bf1);\n");
2158: printf ("\t}\n");
1.1 root 2159: }
2160: }
2161: break;
2162: case i_PACK:
2163: if (table68k[opcode].smode == Dreg) {
1.1.1.3 root 2164: printf ("\tuae_u16 val = m68k_dreg(regs, srcreg) + %s;\n", gen_nextiword());
2165: printf ("\tm68k_dreg(regs, dstreg) = (m68k_dreg(regs, dstreg) & 0xffffff00) | ((val >> 4) & 0xf0) | (val & 0xf);\n");
2166: } else {
2167: printf ("\tuae_u16 val;\n");
2168: printf ("\tm68k_areg(regs, srcreg) -= areg_byteinc[srcreg];\n");
2169: printf ("\tval = (uae_u16)get_byte(m68k_areg(regs, srcreg));\n");
2170: printf ("\tm68k_areg(regs, srcreg) -= areg_byteinc[srcreg];\n");
2171: printf ("\tval = (val | ((uae_u16)get_byte(m68k_areg(regs, srcreg)) << 8)) + %s;\n", gen_nextiword());
2172: printf ("\tm68k_areg(regs, dstreg) -= areg_byteinc[dstreg];\n");
2173: printf ("\tput_byte(m68k_areg(regs, dstreg),((val >> 4) & 0xf0) | (val & 0xf));\n");
1.1 root 2174: }
2175: break;
2176: case i_UNPK:
2177: if (table68k[opcode].smode == Dreg) {
1.1.1.3 root 2178: printf ("\tuae_u16 val = m68k_dreg(regs, srcreg);\n");
2179: printf ("\tval = (((val << 4) & 0xf00) | (val & 0xf)) + %s;\n", gen_nextiword());
2180: printf ("\tm68k_dreg(regs, dstreg) = (m68k_dreg(regs, dstreg) & 0xffff0000) | (val & 0xffff);\n");
2181: } else {
2182: printf ("\tuae_u16 val;\n");
2183: printf ("\tm68k_areg(regs, srcreg) -= areg_byteinc[srcreg];\n");
2184: printf ("\tval = (uae_u16)get_byte(m68k_areg(regs, srcreg));\n");
2185: printf ("\tval = (((val << 4) & 0xf00) | (val & 0xf)) + %s;\n", gen_nextiword());
2186: printf ("\tm68k_areg(regs, dstreg) -= areg_byteinc[dstreg];\n");
2187: printf ("\tput_byte(m68k_areg(regs, dstreg),val);\n");
2188: printf ("\tm68k_areg(regs, dstreg) -= areg_byteinc[dstreg];\n");
2189: printf ("\tput_byte(m68k_areg(regs, dstreg),val >> 8);\n");
1.1 root 2190: }
2191: break;
2192: case i_TAS:
1.1.1.3 root 2193: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
1.1 root 2194: genflags(flag_logical, table68k[opcode].size, "src", "", "");
1.1.1.3 root 2195: printf ("\tsrc |= 0x80;\n");
2196: genastore ("src", table68k[opcode].smode, "srcreg", table68k[opcode].size, "src");
1.1 root 2197: break;
2198: case i_FPP:
2199: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "extra", 1, 0);
1.1.1.3 root 2200: sync_m68k_pc();
2201: printf ("\tfpp_opp(opcode,extra);\n");
1.1 root 2202: break;
2203: case i_FDBcc:
2204: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "extra", 1, 0);
1.1.1.3 root 2205: sync_m68k_pc();
2206: printf ("\tfdbcc_opp(opcode,extra);\n");
1.1 root 2207: break;
2208: case i_FScc:
2209: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "extra", 1, 0);
1.1.1.3 root 2210: sync_m68k_pc();
2211: printf ("\tfscc_opp(opcode,extra);\n");
1.1 root 2212: break;
2213: case i_FTRAPcc:
1.1.1.3 root 2214: sync_m68k_pc();
2215: start_brace();
2216: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1 root 2217: if (table68k[opcode].smode != am_unknown && table68k[opcode].smode != am_illg)
2218: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "dummy", 1, 0);
1.1.1.3 root 2219: sync_m68k_pc();
2220: printf ("\tftrapcc_opp(opcode,oldpc);\n");
1.1 root 2221: break;
2222: case i_FBcc:
1.1.1.3 root 2223: sync_m68k_pc();
2224: start_brace();
2225: printf ("\tuaecptr pc = m68k_getpc();\n");
1.1 root 2226: genamode (table68k[opcode].dmode, "srcreg", table68k[opcode].size, "extra", 1, 0);
1.1.1.3 root 2227: sync_m68k_pc();
2228: printf ("\tfbcc_opp(opcode,pc,extra);\n");
1.1 root 2229: break;
2230: case i_FSAVE:
1.1.1.3 root 2231: sync_m68k_pc();
2232: printf ("\tfsave_opp(opcode);\n");
1.1 root 2233: break;
2234: case i_FRESTORE:
1.1.1.3 root 2235: sync_m68k_pc();
2236: printf ("\tfrestore_opp(opcode);\n");
1.1 root 2237: break;
2238: case i_MMUOP:
2239: genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "extra", 1, 0);
1.1.1.3 root 2240: sync_m68k_pc();
2241: printf ("\tmmu_op(opcode,extra);\n");
1.1 root 2242: break;
2243: default:
2244: abort();
2245: break;
2246: };
2247: finish_braces ();
1.1.1.3 root 2248: sync_m68k_pc ();
2249: printf ("%s: (void)0;\n", endlabelstr);
1.1 root 2250: }
2251:
1.1.1.3 root 2252: static void generate_includes (FILE *f)
2253: {
2254: fprintf (f, "#include \"sysconfig.h\"\n");
2255: fprintf (f, "#include \"sysdeps.h\"\n");
2256: fprintf (f, "#include \"config.h\"\n");
2257: fprintf (f, "#include \"options.h\"\n");
2258: fprintf (f, "#include \"machdep/m68k.h\"\n");
2259: fprintf (f, "#include \"memory.h\"\n");
2260: fprintf (f, "#include \"custom.h\"\n");
2261: fprintf (f, "#include \"readcpu.h\"\n");
2262: fprintf (f, "#include \"newcpu.h\"\n");
2263: fprintf (f, "#include \"compiler.h\"\n");
2264: fprintf (f, "#include \"cputbl.h\"\n");
2265: }
2266:
2267: static int postfix;
2268:
2269: static void generate_one_opcode (int rp)
1.1 root 2270: {
2271: int i;
1.1.1.3 root 2272: uae_u16 smsk, dmsk;
2273: long int opcode = opcode_map[rp];
1.1 root 2274:
1.1.1.3 root 2275: if (table68k[opcode].mnemo == i_ILLG
2276: || table68k[opcode].clev > cpu_level)
2277: return;
1.1 root 2278:
1.1.1.3 root 2279: for (i = 0; lookuptab[i].name[0] ; i++) {
2280: if (table68k[opcode].mnemo == lookuptab[i].mnemo)
2281: break;
2282: }
1.1 root 2283:
1.1.1.3 root 2284: if (table68k[opcode].handler != -1)
2285: return;
1.1 root 2286:
1.1.1.3 root 2287: if (opcode_next_clev[rp] != cpu_level) {
2288: fprintf (stblfile, "{ op_%lx_%d, 0, %ld }, /* %s */\n", opcode, opcode_last_postfix[rp],
2289: opcode, lookuptab[i].name);
2290: return;
2291: }
2292: fprintf (stblfile, "{ op_%lx_%d, 0, %ld }, /* %s */\n", opcode, postfix, opcode, lookuptab[i].name);
2293: fprintf (headerfile, "extern cpuop_func op_%lx_%d;\n", opcode, postfix);
2294: printf ("void REGPARAM2 op_%lx_%d(uae_u32 opcode) /* %s */\n{\n", opcode, postfix, lookuptab[i].name);
2295:
2296: switch (table68k[opcode].stype) {
2297: case 0: smsk = 7; break;
2298: case 1: smsk = 255; break;
2299: case 2: smsk = 15; break;
2300: case 3: smsk = 7; break;
2301: case 4: smsk = 7; break;
2302: case 5: smsk = 63; break;
2303: default: abort();
2304: }
2305: dmsk = 7;
2306:
2307: next_cpu_level = -1;
2308: if (table68k[opcode].suse
2309: && table68k[opcode].smode != imm && table68k[opcode].smode != imm0
2310: && table68k[opcode].smode != imm1 && table68k[opcode].smode != imm2
2311: && table68k[opcode].smode != absw && table68k[opcode].smode != absl
2312: && table68k[opcode].smode != PC8r && table68k[opcode].smode != PC16)
2313: {
2314: if (table68k[opcode].spos == -1) {
2315: if (((int)table68k[opcode].sreg) >= 128)
2316: printf ("\tuae_u32 srcreg = (uae_s32)(uae_s8)%d;\n", (int)table68k[opcode].sreg);
2317: else
2318: printf ("\tuae_u32 srcreg = %d;\n", (int)table68k[opcode].sreg);
2319: } else {
2320: char source[100];
2321:
2322: if (table68k[opcode].spos)
2323: sprintf (source,"((opcode >> %d) & %d)",(int)table68k[opcode].spos,smsk);
2324: else
2325: sprintf (source,"(opcode & %d)",smsk);
2326:
2327: if (table68k[opcode].stype == 3)
2328: printf ("\tuae_u32 srcreg = imm8_table[%s];\n", source);
2329: else if (table68k[opcode].stype == 1)
2330: printf ("\tuae_u32 srcreg = (uae_s32)(uae_s8)%s;\n", source);
2331: else
2332: printf ("\tuae_u32 srcreg = %s;\n", source);
1.1 root 2333: }
1.1.1.3 root 2334: }
2335: if (table68k[opcode].duse
2336: /* Yes, the dmode can be imm, in case of LINK or DBcc */
2337: && table68k[opcode].dmode != imm && table68k[opcode].dmode != imm0
2338: && table68k[opcode].dmode != imm1 && table68k[opcode].dmode != imm2
2339: && table68k[opcode].dmode != absw && table68k[opcode].dmode != absl) {
2340: if (table68k[opcode].dpos == -1) {
2341: if (((int)table68k[opcode].dreg) >= 128)
2342: printf ("\tuae_u32 dstreg = (uae_s32)(uae_s8)%d;\n", (int)table68k[opcode].dreg);
2343: else
2344: printf ("\tuae_u32 dstreg = %d;\n", (int)table68k[opcode].dreg);
2345: } else {
2346: if (table68k[opcode].dpos)
2347: printf ("\tuae_u32 dstreg = (opcode >> %d) & %d;\n",
2348: (int)table68k[opcode].dpos,dmsk);
2349: else
2350: printf ("\tuae_u32 dstreg = opcode & %d;\n", dmsk);
1.1 root 2351: }
2352: }
1.1.1.3 root 2353: endlabelno++;
2354: sprintf (endlabelstr, "endlabel%d", endlabelno);
2355: gen_opcode (opcode);
2356: printf ("}\n");
2357: opcode_next_clev[rp] = next_cpu_level;
2358: opcode_last_postfix[rp] = postfix;
1.1 root 2359: }
2360:
1.1.1.3 root 2361: static void generate_func (void)
1.1 root 2362: {
1.1.1.3 root 2363: int i, rp;
1.1 root 2364:
1.1.1.3 root 2365: using_prefetch = 0;
2366: using_exception_3 = 0;
2367: for (i = 0; i < 5; i++) {
2368: cpu_level = 3 - i;
2369: if (i == 4) {
2370: cpu_level = 0;
2371: using_prefetch = 1;
2372: using_exception_3 = 1;
2373: for (rp = 0; rp < nr_cpuop_funcs; rp++)
2374: opcode_next_clev[rp] = 0;
2375: }
2376: postfix = i;
2377: fprintf (stblfile, "struct cputbl op_smalltbl_%d[] = {\n", postfix);
2378:
2379: for (rp = 0; rp < nr_cpuop_funcs; rp++)
2380: generate_one_opcode (rp);
2381: fprintf (stblfile, "{ 0, 0, 0 }};\n");
1.1 root 2382: }
2383:
2384: }
2385:
1.1.1.3 root 2386: int main (int argc, char **argv)
2387: {
1.1 root 2388: read_table68k ();
2389: do_merges ();
1.1.1.3 root 2390:
2391: opcode_map = (int *)xmalloc (sizeof (int) * nr_cpuop_funcs);
2392: opcode_last_postfix = (int *)xmalloc (sizeof (int) * nr_cpuop_funcs);
2393: opcode_next_clev = (int *)xmalloc (sizeof (int) * nr_cpuop_funcs);
2394: counts = (unsigned long *)xmalloc (65536 * sizeof (unsigned long));
2395: read_counts();
2396:
2397: /* It would be a lot nicer to put all in one file (we'd also get rid of
2398: * cputbl.h that way), but cpuopti can't cope. That could be fixed, but
2399: * I don't dare to touch the 68k version. */
1.1 root 2400:
1.1.1.3 root 2401: headerfile = fopen ("cputbl.h", "wb");
2402: stblfile = fopen ("cpustbl.c", "wb");
2403: freopen ("cpuemu.c", "wb", stdout);
2404:
2405: generate_includes (stdout);
2406: generate_includes (stblfile);
2407:
2408: generate_func ();
2409:
2410: free (table68k);
1.1 root 2411: return 0;
2412: }
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