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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:
1.1.1.5 root 41: void write_log (const char *s, ...)
1.1 root 42: {
1.1.1.3 root 43: fprintf (stderr, "%s", s);
1.1 root 44: }
45:
1.1.1.3 root 46: static int *opcode_map;
47: static int *opcode_next_clev;
48: static int *opcode_last_postfix;
49: static unsigned long *counts;
50:
1.1.1.5 root 51: static void read_counts (void)
1.1 root 52: {
53: FILE *file;
1.1.1.5 root 54: unsigned long opcode, count, total;
1.1 root 55: char name[20];
1.1.1.5 root 56: int nr = 0;
1.1.1.3 root 57: memset (counts, 0, 65536 * sizeof *counts);
1.1 root 58:
1.1.1.3 root 59: file = fopen ("frequent.68k", "r");
60: if (file) {
61: fscanf (file, "Total: %lu\n", &total);
1.1.1.5 root 62: while (fscanf (file, "%lx: %lu %s\n", &opcode, &count, name) == 3) {
1.1.1.3 root 63: opcode_next_clev[nr] = 3;
64: opcode_last_postfix[nr] = -1;
65: opcode_map[nr++] = opcode;
66: counts[opcode] = count;
67: }
68: fclose (file);
69: }
70: if (nr == nr_cpuop_funcs)
71: return;
72: for (opcode = 0; opcode < 0x10000; opcode++) {
73: if (table68k[opcode].handler == -1 && table68k[opcode].mnemo != i_ILLG
74: && counts[opcode] == 0)
1.1 root 75: {
1.1.1.3 root 76: opcode_next_clev[nr] = 3;
77: opcode_last_postfix[nr] = -1;
78: opcode_map[nr++] = opcode;
79: counts[opcode] = count;
1.1 root 80: }
81: }
1.1.1.3 root 82: if (nr != nr_cpuop_funcs)
83: abort ();
1.1 root 84: }
85:
1.1.1.3 root 86: static char endlabelstr[80];
87: static int endlabelno = 0;
1.1.1.5 root 88: static int need_endlabel;
1.1 root 89:
90: static int n_braces = 0;
1.1.1.3 root 91: static int m68k_pc_offset = 0;
1.1.1.5 root 92: static int insn_n_cycles;
1.1 root 93:
1.1.1.5 root 94: static void start_brace (void)
1.1 root 95: {
96: n_braces++;
1.1.1.3 root 97: printf ("{");
1.1 root 98: }
99:
1.1.1.5 root 100: static void close_brace (void)
1.1 root 101: {
102: assert (n_braces > 0);
103: n_braces--;
1.1.1.3 root 104: printf ("}");
1.1 root 105: }
106:
1.1.1.5 root 107: static void finish_braces (void)
1.1 root 108: {
109: while (n_braces > 0)
1.1.1.5 root 110: close_brace ();
1.1 root 111: }
112:
1.1.1.5 root 113: static void pop_braces (int to)
1.1 root 114: {
115: while (n_braces > to)
1.1.1.5 root 116: close_brace ();
1.1 root 117: }
118:
1.1.1.5 root 119: static int bit_size (int size)
1.1 root 120: {
1.1.1.5 root 121: switch (size) {
122: case sz_byte: return 8;
123: case sz_word: return 16;
124: case sz_long: return 32;
125: default: abort ();
1.1 root 126: }
127: return 0;
128: }
129:
1.1.1.5 root 130: static const char *bit_mask (int size)
1.1 root 131: {
1.1.1.5 root 132: switch (size) {
1.1.1.3 root 133: case sz_byte: return "0xff";
134: case sz_word: return "0xffff";
135: case sz_long: return "0xffffffff";
1.1.1.5 root 136: default: abort ();
1.1 root 137: }
138: return 0;
139: }
140:
1.1.1.3 root 141: static const char *gen_nextilong (void)
142: {
143: static char buffer[80];
144: int r = m68k_pc_offset;
145: m68k_pc_offset += 4;
1.1.1.5 root 146:
147: insn_n_cycles += 4;
148:
149: if (using_prefetch)
150: sprintf (buffer, "get_ilong_prefetch(%d)", r);
151: else
152: sprintf (buffer, "get_ilong(%d)", r);
1.1.1.3 root 153: return buffer;
154: }
155:
156: static const char *gen_nextiword (void)
157: {
158: static char buffer[80];
159: int r = m68k_pc_offset;
160: m68k_pc_offset += 2;
1.1.1.5 root 161:
162: insn_n_cycles += 2;
163:
164: if (using_prefetch)
165: sprintf (buffer, "get_iword_prefetch(%d)", r);
166: else
167: sprintf (buffer, "get_iword(%d)", r);
1.1.1.3 root 168: return buffer;
169: }
170:
171: static const char *gen_nextibyte (void)
172: {
173: static char buffer[80];
174: int r = m68k_pc_offset;
175: m68k_pc_offset += 2;
1.1.1.5 root 176:
177: insn_n_cycles += 2;
178:
179: if (using_prefetch)
180: sprintf (buffer, "get_ibyte_prefetch(%d)", r);
181: else
182: sprintf (buffer, "get_ibyte(%d)", r);
1.1.1.3 root 183: return buffer;
184: }
185:
186: static void fill_prefetch_0 (void)
187: {
188: if (using_prefetch)
189: printf ("fill_prefetch_0 ();\n");
190: }
191:
192: static void fill_prefetch_2 (void)
193: {
194: if (using_prefetch)
195: printf ("fill_prefetch_2 ();\n");
196: }
197:
198: static void sync_m68k_pc (void)
199: {
200: if (m68k_pc_offset == 0)
201: return;
202: printf ("m68k_incpc(%d);\n", m68k_pc_offset);
203: switch (m68k_pc_offset) {
204: case 0:
1.1.1.5 root 205: /*fprintf (stderr, "refilling prefetch at 0\n"); */
1.1.1.3 root 206: break;
207: case 2:
1.1.1.5 root 208: fill_prefetch_2 ();
1.1.1.3 root 209: break;
210: default:
1.1.1.5 root 211: fill_prefetch_0 ();
1.1.1.3 root 212: break;
213: }
214: m68k_pc_offset = 0;
215: }
216:
217: /* getv == 1: fetch data; getv != 0: check for odd address. If movem != 0,
1.1.1.5 root 218: * the calling routine handles Apdi and Aipi modes. */
1.1.1.3 root 219: static void genamode (amodes mode, char *reg, wordsizes size, char *name, int getv, int movem)
1.1 root 220: {
1.1.1.6 root 221: start_brace ();
1.1.1.5 root 222: switch (mode) {
1.1 root 223: case Dreg:
224: if (movem)
1.1.1.5 root 225: abort ();
1.1.1.3 root 226: if (getv == 1)
1.1.1.5 root 227: switch (size) {
1.1 root 228: case sz_byte:
1.1.1.8 root 229: #if defined(AMIGA) && !defined(WARPUP)
1.1.1.2 root 230: /* sam: I don't know why gcc.2.7.2.1 produces a code worse */
231: /* if it is not done like that: */
1.1.1.3 root 232: printf ("\tuae_s8 %s = ((uae_u8*)&m68k_dreg(regs, %s))[3];\n", name, reg);
1.1.1.2 root 233: #else
1.1.1.3 root 234: printf ("\tuae_s8 %s = m68k_dreg(regs, %s);\n", name, reg);
1.1.1.2 root 235: #endif
1.1 root 236: break;
237: case sz_word:
1.1.1.8 root 238: #if defined(AMIGA) && !defined(WARPUP)
1.1.1.3 root 239: printf ("\tuae_s16 %s = ((uae_s16*)&m68k_dreg(regs, %s))[1];\n", name, reg);
1.1.1.2 root 240: #else
1.1.1.3 root 241: printf ("\tuae_s16 %s = m68k_dreg(regs, %s);\n", name, reg);
1.1.1.2 root 242: #endif
1.1 root 243: break;
244: case sz_long:
1.1.1.3 root 245: printf ("\tuae_s32 %s = m68k_dreg(regs, %s);\n", name, reg);
1.1 root 246: break;
1.1.1.5 root 247: default:
248: abort ();
1.1 root 249: }
1.1.1.3 root 250: return;
1.1 root 251: case Areg:
252: if (movem)
1.1.1.5 root 253: abort ();
1.1.1.3 root 254: if (getv == 1)
1.1.1.5 root 255: switch (size) {
1.1 root 256: case sz_word:
1.1.1.3 root 257: printf ("\tuae_s16 %s = m68k_areg(regs, %s);\n", name, reg);
1.1 root 258: break;
259: case sz_long:
1.1.1.3 root 260: printf ("\tuae_s32 %s = m68k_areg(regs, %s);\n", name, reg);
1.1 root 261: break;
1.1.1.5 root 262: default:
263: abort ();
1.1 root 264: }
1.1.1.3 root 265: return;
1.1 root 266: case Aind:
1.1.1.3 root 267: printf ("\tuaecptr %sa = m68k_areg(regs, %s);\n", name, reg);
1.1 root 268: break;
269: case Aipi:
1.1.1.3 root 270: printf ("\tuaecptr %sa = m68k_areg(regs, %s);\n", name, reg);
1.1 root 271: break;
272: case Apdi:
1.1.1.5 root 273: switch (size) {
1.1 root 274: case sz_byte:
1.1.1.3 root 275: if (movem)
276: printf ("\tuaecptr %sa = m68k_areg(regs, %s);\n", name, reg);
277: else
278: printf ("\tuaecptr %sa = m68k_areg(regs, %s) - areg_byteinc[%s];\n", name, reg, reg);
1.1 root 279: break;
280: case sz_word:
1.1.1.3 root 281: printf ("\tuaecptr %sa = m68k_areg(regs, %s) - %d;\n", name, reg, movem ? 0 : 2);
1.1 root 282: break;
283: case sz_long:
1.1.1.3 root 284: printf ("\tuaecptr %sa = m68k_areg(regs, %s) - %d;\n", name, reg, movem ? 0 : 4);
1.1 root 285: break;
1.1.1.5 root 286: default:
287: abort ();
1.1 root 288: }
289: break;
290: case Ad16:
1.1.1.5 root 291: printf ("\tuaecptr %sa = m68k_areg(regs, %s) + (uae_s32)(uae_s16)%s;\n", name, reg, gen_nextiword ());
1.1 root 292: break;
293: case Ad8r:
1.1.1.3 root 294: if (cpu_level > 1) {
295: if (next_cpu_level < 1)
296: next_cpu_level = 1;
1.1.1.5 root 297: sync_m68k_pc ();
298: start_brace ();
1.1.1.3 root 299: printf ("\tuaecptr %sa = get_disp_ea_020(m68k_areg(regs, %s), next_iword());\n", name, reg);
1.1.1.6 root 300: } else
1.1.1.5 root 301: printf ("\tuaecptr %sa = get_disp_ea_000(m68k_areg(regs, %s), %s);\n", name, reg, gen_nextiword ());
1.1.1.6 root 302:
1.1 root 303: break;
304: case PC16:
1.1.1.6 root 305: printf ("\tuaecptr %sa = m68k_getpc () + %d;\n", name, m68k_pc_offset);
306: printf ("\t%sa += (uae_s32)(uae_s16)%s;\n", name, gen_nextiword ());
1.1 root 307: break;
308: case PC8r:
1.1.1.3 root 309: if (cpu_level > 1) {
310: if (next_cpu_level < 1)
311: next_cpu_level = 1;
1.1.1.5 root 312: sync_m68k_pc ();
313: start_brace ();
1.1.1.3 root 314: printf ("\tuaecptr tmppc = m68k_getpc();\n");
315: printf ("\tuaecptr %sa = get_disp_ea_020(tmppc, next_iword());\n", name);
316: } else {
1.1.1.6 root 317: printf ("\tuaecptr tmppc = m68k_getpc() + %d;\n", m68k_pc_offset);
318: printf ("\tuaecptr %sa = get_disp_ea_000(tmppc, %s);\n", name, gen_nextiword ());
1.1 root 319: }
1.1.1.3 root 320:
1.1 root 321: break;
322: case absw:
1.1.1.6 root 323: printf ("\tuaecptr %sa = (uae_s32)(uae_s16)%s;\n", name, gen_nextiword ());
1.1 root 324: break;
325: case absl:
1.1.1.6 root 326: printf ("\tuaecptr %sa = %s;\n", name, gen_nextilong ());
1.1 root 327: break;
328: case imm:
1.1.1.3 root 329: if (getv != 1)
330: abort ();
1.1.1.5 root 331: switch (size) {
1.1.1.3 root 332: case sz_byte:
1.1.1.6 root 333: printf ("\tuae_s8 %s = %s;\n", name, gen_nextibyte ());
1.1.1.3 root 334: break;
335: case sz_word:
1.1.1.6 root 336: printf ("\tuae_s16 %s = %s;\n", name, gen_nextiword ());
1.1.1.3 root 337: break;
338: case sz_long:
1.1.1.6 root 339: printf ("\tuae_s32 %s = %s;\n", name, gen_nextilong ());
1.1.1.3 root 340: break;
1.1.1.5 root 341: default:
342: abort ();
1.1.1.3 root 343: }
344: return;
345: case imm0:
1.1.1.5 root 346: if (getv != 1)
347: abort ();
1.1.1.6 root 348: printf ("\tuae_s8 %s = %s;\n", name, gen_nextibyte ());
1.1.1.3 root 349: return;
350: case imm1:
1.1.1.5 root 351: if (getv != 1)
352: abort ();
1.1.1.6 root 353: printf ("\tuae_s16 %s = %s;\n", name, gen_nextiword ());
1.1.1.3 root 354: return;
355: case imm2:
1.1.1.5 root 356: if (getv != 1)
357: abort ();
1.1.1.6 root 358: printf ("\tuae_s32 %s = %s;\n", name, gen_nextilong ());
1.1.1.3 root 359: return;
360: case immi:
1.1.1.5 root 361: if (getv != 1)
362: abort ();
1.1.1.3 root 363: printf ("\tuae_u32 %s = %s;\n", name, reg);
364: return;
365: default:
1.1.1.5 root 366: abort ();
1.1.1.3 root 367: }
368:
369: /* We get here for all non-reg non-immediate addressing modes to
370: * actually fetch the value. */
371:
1.1.1.6 root 372: if (using_exception_3 && getv != 0 && size != sz_byte) {
1.1.1.3 root 373: printf ("\tif ((%sa & 1) != 0) {\n", name);
374: printf ("\t\tlast_fault_for_exception_3 = %sa;\n", name);
1.1.1.5 root 375: printf ("\t\tlast_op_for_exception_3 = opcode;\n");
1.1.1.3 root 376: printf ("\t\tlast_addr_for_exception_3 = m68k_getpc() + %d;\n", m68k_pc_offset);
377: printf ("\t\tException(3, 0);\n");
378: printf ("\t\tgoto %s;\n", endlabelstr);
379: printf ("\t}\n");
1.1.1.5 root 380: need_endlabel = 1;
1.1.1.3 root 381: start_brace ();
382: }
1.1.1.6 root 383:
384: if (getv == 1) {
385: switch (size) {
386: case sz_byte: insn_n_cycles += 2; break;
387: case sz_word: insn_n_cycles += 2; break;
388: case sz_long: insn_n_cycles += 4; break;
389: default: abort ();
390: }
391: start_brace ();
392: switch (size) {
393: case sz_byte: printf ("\tuae_s8 %s = get_byte(%sa);\n", name, name); break;
394: case sz_word: printf ("\tuae_s16 %s = get_word(%sa);\n", name, name); break;
395: case sz_long: printf ("\tuae_s32 %s = get_long(%sa);\n", name, name); break;
396: default: abort ();
397: }
398: }
399:
1.1.1.3 root 400: /* We now might have to fix up the register for pre-dec or post-inc
401: * addressing modes. */
402: if (!movem)
403: switch (mode) {
404: case Aipi:
1.1.1.5 root 405: switch (size) {
1.1 root 406: case sz_byte:
1.1.1.3 root 407: printf ("\tm68k_areg(regs, %s) += areg_byteinc[%s];\n", reg, reg);
1.1 root 408: break;
409: case sz_word:
1.1.1.3 root 410: printf ("\tm68k_areg(regs, %s) += 2;\n", reg);
1.1 root 411: break;
412: case sz_long:
1.1.1.3 root 413: printf ("\tm68k_areg(regs, %s) += 4;\n", reg);
1.1 root 414: break;
1.1.1.5 root 415: default:
416: abort ();
1.1 root 417: }
1.1.1.3 root 418: break;
419: case Apdi:
420: printf ("\tm68k_areg (regs, %s) = %sa;\n", reg, name);
421: break;
422: default:
423: break;
424: }
1.1 root 425: }
426:
1.1.1.3 root 427: static void genastore (char *from, amodes mode, char *reg, wordsizes size, char *to)
1.1 root 428: {
1.1.1.5 root 429: switch (mode) {
1.1 root 430: case Dreg:
1.1.1.5 root 431: switch (size) {
1.1 root 432: case sz_byte:
1.1.1.3 root 433: printf ("\tm68k_dreg(regs, %s) = (m68k_dreg(regs, %s) & ~0xff) | ((%s) & 0xff);\n", reg, reg, from);
1.1 root 434: break;
435: case sz_word:
1.1.1.3 root 436: printf ("\tm68k_dreg(regs, %s) = (m68k_dreg(regs, %s) & ~0xffff) | ((%s) & 0xffff);\n", reg, reg, from);
1.1 root 437: break;
438: case sz_long:
1.1.1.3 root 439: printf ("\tm68k_dreg(regs, %s) = (%s);\n", reg, from);
1.1 root 440: break;
1.1.1.5 root 441: default:
442: abort ();
1.1 root 443: }
444: break;
445: case Areg:
1.1.1.5 root 446: switch (size) {
1.1 root 447: case sz_word:
1.1.1.3 root 448: fprintf (stderr, "Foo\n");
449: printf ("\tm68k_areg(regs, %s) = (uae_s32)(uae_s16)(%s);\n", reg, from);
1.1 root 450: break;
451: case sz_long:
1.1.1.3 root 452: printf ("\tm68k_areg(regs, %s) = (%s);\n", reg, from);
1.1 root 453: break;
1.1.1.5 root 454: default:
455: abort ();
1.1 root 456: }
457: break;
458: case Aind:
459: case Aipi:
460: case Apdi:
461: case Ad16:
462: case Ad8r:
463: case absw:
464: case absl:
465: case PC16:
466: case PC8r:
1.1.1.3 root 467: if (using_prefetch)
1.1.1.5 root 468: sync_m68k_pc ();
469: switch (size) {
1.1 root 470: case sz_byte:
1.1.1.5 root 471: insn_n_cycles += 2;
1.1.1.3 root 472: printf ("\tput_byte(%sa,%s);\n", to, from);
1.1 root 473: break;
474: case sz_word:
1.1.1.5 root 475: insn_n_cycles += 2;
476: if (cpu_level < 2 && (mode == PC16 || mode == PC8r))
477: abort ();
1.1.1.3 root 478: printf ("\tput_word(%sa,%s);\n", to, from);
1.1 root 479: break;
480: case sz_long:
1.1.1.5 root 481: insn_n_cycles += 4;
482: if (cpu_level < 2 && (mode == PC16 || mode == PC8r))
483: abort ();
1.1.1.3 root 484: printf ("\tput_long(%sa,%s);\n", to, from);
1.1 root 485: break;
1.1.1.5 root 486: default:
487: abort ();
1.1 root 488: }
489: break;
490: case imm:
491: case imm0:
492: case imm1:
493: case imm2:
494: case immi:
1.1.1.5 root 495: abort ();
1.1 root 496: break;
1.1.1.3 root 497: default:
1.1.1.5 root 498: abort ();
1.1 root 499: }
500: }
501:
1.1.1.5 root 502: static void genmovemel (uae_u16 opcode)
1.1 root 503: {
504: char getcode[100];
505: int size = table68k[opcode].size == sz_long ? 4 : 2;
1.1.1.3 root 506:
507: if (table68k[opcode].size == sz_long) {
1.1.1.5 root 508: strcpy (getcode, "get_long(srca)");
1.1.1.3 root 509: } else {
1.1.1.5 root 510: strcpy (getcode, "(uae_s32)(uae_s16)get_word(srca)");
1.1 root 511: }
1.1.1.3 root 512:
1.1.1.5 root 513: printf ("\tuae_u16 mask = %s;\n", gen_nextiword ());
1.1.1.3 root 514: printf ("\tunsigned int dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n");
515: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1);
1.1.1.5 root 516: start_brace ();
1.1.1.3 root 517: printf ("\twhile (dmask) { m68k_dreg(regs, movem_index1[dmask]) = %s; srca += %d; dmask = movem_next[dmask]; }\n",
1.1.1.5 root 518: getcode, size);
1.1.1.3 root 519: printf ("\twhile (amask) { m68k_areg(regs, movem_index1[amask]) = %s; srca += %d; amask = movem_next[amask]; }\n",
1.1.1.5 root 520: getcode, size);
1.1 root 521:
522: if (table68k[opcode].dmode == Aipi)
1.1.1.3 root 523: printf ("\tm68k_areg(regs, dstreg) = srca;\n");
1.1 root 524: }
525:
1.1.1.5 root 526: static void genmovemle (uae_u16 opcode)
1.1 root 527: {
528: char putcode[100];
529: int size = table68k[opcode].size == sz_long ? 4 : 2;
530: if (table68k[opcode].size == sz_long) {
1.1.1.5 root 531: strcpy (putcode, "put_long(srca,");
1.1.1.3 root 532: } else {
1.1.1.5 root 533: strcpy (putcode, "put_word(srca,");
1.1 root 534: }
1.1.1.3 root 535:
1.1.1.5 root 536: printf ("\tuae_u16 mask = %s;\n", gen_nextiword ());
1.1.1.3 root 537: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1);
538: if (using_prefetch)
1.1.1.5 root 539: sync_m68k_pc ();
1.1.1.3 root 540:
1.1.1.5 root 541: start_brace ();
1.1 root 542: if (table68k[opcode].dmode == Apdi) {
1.1.1.3 root 543: printf ("\tuae_u16 amask = mask & 0xff, dmask = (mask >> 8) & 0xff;\n");
544: printf ("\twhile (amask) { srca -= %d; %s m68k_areg(regs, movem_index2[amask])); amask = movem_next[amask]; }\n",
1.1.1.5 root 545: size, putcode);
1.1.1.3 root 546: printf ("\twhile (dmask) { srca -= %d; %s m68k_dreg(regs, movem_index2[dmask])); dmask = movem_next[dmask]; }\n",
1.1.1.5 root 547: size, putcode);
1.1.1.3 root 548: printf ("\tm68k_areg(regs, dstreg) = srca;\n");
1.1.1.2 root 549: } else {
1.1.1.3 root 550: printf ("\tuae_u16 dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n");
551: printf ("\twhile (dmask) { %s m68k_dreg(regs, movem_index1[dmask])); srca += %d; dmask = movem_next[dmask]; }\n",
1.1.1.5 root 552: putcode, size);
1.1.1.3 root 553: printf ("\twhile (amask) { %s m68k_areg(regs, movem_index1[amask])); srca += %d; amask = movem_next[amask]; }\n",
1.1.1.5 root 554: putcode, size);
1.1 root 555: }
556: }
557:
1.1.1.7 root 558: static void duplicate_carry (void)
559: {
560: printf ("\tCOPY_CARRY;\n");
561: }
562:
1.1 root 563: typedef enum {
1.1.1.7 root 564: flag_logical_noclobber, flag_logical, flag_add, flag_sub, flag_cmp, flag_addx, flag_subx, flag_zn,
1.1 root 565: flag_av, flag_sv
566: } flagtypes;
567:
1.1.1.5 root 568: static void genflags_normal (flagtypes type, wordsizes size, char *value, char *src, char *dst)
1.1 root 569: {
1.1.1.5 root 570: char vstr[100], sstr[100], dstr[100];
571: char usstr[100], udstr[100];
572: char unsstr[100], undstr[100];
1.1 root 573:
1.1.1.5 root 574: switch (size) {
1.1 root 575: case sz_byte:
1.1.1.5 root 576: strcpy (vstr, "((uae_s8)(");
577: strcpy (usstr, "((uae_u8)(");
1.1 root 578: break;
579: case sz_word:
1.1.1.5 root 580: strcpy (vstr, "((uae_s16)(");
581: strcpy (usstr, "((uae_u16)(");
1.1 root 582: break;
583: case sz_long:
1.1.1.5 root 584: strcpy (vstr, "((uae_s32)(");
585: strcpy (usstr, "((uae_u32)(");
1.1 root 586: break;
587: default:
1.1.1.5 root 588: abort ();
1.1 root 589: }
1.1.1.5 root 590: strcpy (unsstr, usstr);
1.1 root 591:
1.1.1.5 root 592: strcpy (sstr, vstr);
593: strcpy (dstr, vstr);
594: strcat (vstr, value);
595: strcat (vstr, "))");
596: strcat (dstr, dst);
597: strcat (dstr, "))");
598: strcat (sstr, src);
599: strcat (sstr, "))");
600:
601: strcpy (udstr, usstr);
602: strcat (udstr, dst);
603: strcat (udstr, "))");
604: strcat (usstr, src);
605: strcat (usstr, "))");
606:
607: strcpy (undstr, unsstr);
608: strcat (unsstr, "-");
609: strcat (undstr, "~");
610: strcat (undstr, dst);
611: strcat (undstr, "))");
612: strcat (unsstr, src);
613: strcat (unsstr, "))");
1.1 root 614:
615: switch (type) {
1.1.1.7 root 616: case flag_logical_noclobber:
1.1 root 617: case flag_logical:
618: case flag_zn:
619: case flag_av:
620: case flag_sv:
621: case flag_addx:
622: case flag_subx:
623: break;
1.1.1.3 root 624:
1.1 root 625: case flag_add:
1.1.1.5 root 626: start_brace ();
1.1.1.3 root 627: printf ("uae_u32 %s = %s + %s;\n", value, dstr, sstr);
1.1 root 628: break;
629: case flag_sub:
630: case flag_cmp:
1.1.1.5 root 631: start_brace ();
1.1.1.3 root 632: printf ("uae_u32 %s = %s - %s;\n", value, dstr, sstr);
1.1 root 633: break;
634: }
635:
636: switch (type) {
1.1.1.7 root 637: case flag_logical_noclobber:
1.1 root 638: case flag_logical:
639: case flag_zn:
640: break;
1.1.1.3 root 641:
1.1 root 642: case flag_add:
643: case flag_sub:
644: case flag_addx:
645: case flag_subx:
646: case flag_cmp:
647: case flag_av:
648: case flag_sv:
1.1.1.5 root 649: start_brace ();
650: printf ("\t" BOOL_TYPE " flgs = %s < 0;\n", sstr);
651: printf ("\t" BOOL_TYPE " flgo = %s < 0;\n", dstr);
652: printf ("\t" BOOL_TYPE " flgn = %s < 0;\n", vstr);
1.1 root 653: break;
654: }
1.1.1.3 root 655:
1.1.1.5 root 656: switch (type) {
1.1 root 657: case flag_logical:
1.1.1.7 root 658: printf ("\tCLEAR_CZNV;\n");
659: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
660: printf ("\tSET_NFLG (%s < 0);\n", vstr);
661: break;
662: case flag_logical_noclobber:
663: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
664: printf ("\tSET_NFLG (%s < 0);\n", vstr);
1.1 root 665: break;
666: case flag_av:
1.1.1.7 root 667: printf ("\tSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n");
1.1 root 668: break;
669: case flag_sv:
1.1.1.7 root 670: printf ("\tSET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));\n");
1.1 root 671: break;
672: case flag_zn:
1.1.1.7 root 673: printf ("\tSET_ZFLG (GET_ZFLG & (%s == 0));\n", vstr);
674: printf ("\tSET_NFLG (%s < 0);\n", vstr);
1.1 root 675: break;
676: case flag_add:
1.1.1.7 root 677: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
1.1.1.8 root 678: printf ("\tSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n");
1.1.1.7 root 679: printf ("\tSET_CFLG (%s < %s);\n", undstr, usstr);
680: duplicate_carry ();
681: printf ("\tSET_NFLG (flgn != 0);\n");
1.1 root 682: break;
683: case flag_sub:
1.1.1.7 root 684: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
685: printf ("\tSET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));\n");
686: printf ("\tSET_CFLG (%s > %s);\n", usstr, udstr);
1.1.1.8 root 687: duplicate_carry ();
1.1.1.7 root 688: printf ("\tSET_NFLG (flgn != 0);\n");
1.1 root 689: break;
690: case flag_addx:
1.1.1.7 root 691: printf ("\tSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n"); /* minterm SON: 0x42 */
692: printf ("\tSET_CFLG (flgs ^ ((flgs ^ flgo) & (flgo ^ flgn)));\n"); /* minterm SON: 0xD4 */
693: duplicate_carry ();
1.1 root 694: break;
695: case flag_subx:
1.1.1.7 root 696: printf ("\tSET_VFLG ((flgs ^ flgo) & (flgo ^ flgn));\n"); /* minterm SON: 0x24 */
697: printf ("\tSET_CFLG (flgs ^ ((flgs ^ flgn) & (flgo ^ flgn)));\n"); /* minterm SON: 0xB2 */
698: duplicate_carry ();
1.1 root 699: break;
700: case flag_cmp:
1.1.1.7 root 701: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
702: printf ("\tSET_VFLG ((flgs != flgo) && (flgn != flgo));\n");
703: printf ("\tSET_CFLG (%s > %s);\n", usstr, udstr);
704: printf ("\tSET_NFLG (flgn != 0);\n");
1.1 root 705: break;
706: }
707: }
708:
1.1.1.5 root 709: static void genflags (flagtypes type, wordsizes size, char *value, char *src, char *dst)
1.1 root 710: {
1.1.1.3 root 711: #ifdef X86_ASSEMBLY
1.1 root 712: switch (type) {
1.1.1.5 root 713: case flag_add:
714: case flag_sub:
715: start_brace ();
1.1.1.3 root 716: printf ("\tuae_u32 %s;\n", value);
1.1 root 717: break;
718:
1.1.1.3 root 719: default:
1.1 root 720: break;
721: }
722:
1.1.1.3 root 723: /* At least some of those casts are fairly important! */
1.1.1.5 root 724: switch (type) {
1.1.1.7 root 725: case flag_logical_noclobber:
726: printf ("\t{uae_u32 oldcznv = regflags.cznv & ~0xC0;\n");
727: if (strcmp (value, "0") == 0) {
728: printf ("\tregflags.cznv = olcznv | 64;\n");
729: } else {
730: switch (size) {
731: case sz_byte: printf ("\tx86_flag_testb ((uae_s8)(%s));\n", value); break;
732: case sz_word: printf ("\tx86_flag_testw ((uae_s16)(%s));\n", value); break;
733: case sz_long: printf ("\tx86_flag_testl ((uae_s32)(%s));\n", value); break;
734: }
735: printf ("\tregflags.cznv |= oldcznv;\n");
736: }
737: printf ("\t}\n");
738: return;
1.1 root 739: case flag_logical:
1.1.1.5 root 740: if (strcmp (value, "0") == 0) {
1.1.1.7 root 741: printf ("\tregflags.cznv = 64;\n");
1.1 root 742: } else {
1.1.1.5 root 743: switch (size) {
1.1.1.3 root 744: case sz_byte: printf ("\tx86_flag_testb ((uae_s8)(%s));\n", value); break;
745: case sz_word: printf ("\tx86_flag_testw ((uae_s16)(%s));\n", value); break;
746: case sz_long: printf ("\tx86_flag_testl ((uae_s32)(%s));\n", value); break;
1.1 root 747: }
748: }
749: return;
750:
751: case flag_add:
1.1.1.5 root 752: switch (size) {
1.1.1.3 root 753: case sz_byte: printf ("\tx86_flag_addb (%s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break;
754: case sz_word: printf ("\tx86_flag_addw (%s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break;
755: case sz_long: printf ("\tx86_flag_addl (%s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break;
1.1 root 756: }
757: return;
758:
759: case flag_sub:
1.1.1.5 root 760: switch (size) {
1.1.1.3 root 761: case sz_byte: printf ("\tx86_flag_subb (%s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break;
762: case sz_word: printf ("\tx86_flag_subw (%s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break;
763: case sz_long: printf ("\tx86_flag_subl (%s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break;
1.1 root 764: }
765: return;
766:
767: case flag_cmp:
1.1.1.5 root 768: switch (size) {
1.1.1.3 root 769: case sz_byte: printf ("\tx86_flag_cmpb ((uae_s8)(%s), (uae_s8)(%s));\n", src, dst); break;
770: case sz_word: printf ("\tx86_flag_cmpw ((uae_s16)(%s), (uae_s16)(%s));\n", src, dst); break;
771: case sz_long: printf ("\tx86_flag_cmpl ((uae_s32)(%s), (uae_s32)(%s));\n", src, dst); break;
1.1 root 772: }
773: return;
1.1.1.5 root 774:
1.1.1.3 root 775: default:
776: break;
1.1 root 777: }
1.1.1.2 root 778: #elif defined(M68K_FLAG_OPT)
1.1.1.3 root 779: /* sam: here I'm cloning what X86_ASSEMBLY does */
780: #define EXT(size) (size==sz_byte?"b":(size==sz_word?"w":"l"))
781: #define CAST(size) (size==sz_byte?"uae_s8":(size==sz_word?"uae_s16":"uae_s32"))
1.1.1.2 root 782: switch (type) {
1.1.1.5 root 783: case flag_add:
784: case flag_sub:
785: start_brace ();
1.1.1.3 root 786: printf ("\tuae_u32 %s;\n", value);
1.1.1.2 root 787: break;
788:
1.1.1.3 root 789: default:
1.1.1.2 root 790: break;
791: }
792:
1.1.1.5 root 793: switch (type) {
1.1.1.2 root 794: case flag_logical:
1.1.1.5 root 795: if (strcmp (value, "0") == 0) {
796: printf ("\t*(uae_u16 *)®flags = 4;\n"); /* Z = 1 */
1.1.1.2 root 797: } else {
1.1.1.5 root 798: printf ("\tm68k_flag_tst (%s, (%s)(%s));\n",
799: EXT (size), CAST (size), value);
1.1.1.2 root 800: }
801: return;
802:
803: case flag_add:
1.1.1.3 root 804: printf ("\t{uae_u16 ccr;\n");
1.1.1.5 root 805: printf ("\tm68k_flag_add (%s, (%s)%s, (%s)(%s), (%s)(%s));\n",
806: EXT (size), CAST (size), value, CAST (size), src, CAST (size), dst);
1.1.1.3 root 807: printf ("\t((uae_u16*)®flags)[1]=((uae_u16*)®flags)[0]=ccr;}\n");
1.1.1.2 root 808: return;
809:
810: case flag_sub:
1.1.1.3 root 811: printf ("\t{uae_u16 ccr;\n");
1.1.1.5 root 812: printf ("\tm68k_flag_sub (%s, (%s)%s, (%s)(%s), (%s)(%s));\n",
813: EXT (size), CAST (size), value, CAST (size), src, CAST (size), dst);
1.1.1.3 root 814: printf ("\t((uae_u16*)®flags)[1]=((uae_u16*)®flags)[0]=ccr;}\n");
1.1.1.2 root 815: return;
816:
817: case flag_cmp:
1.1.1.5 root 818: printf ("\tm68k_flag_cmp (%s, (%s)(%s), (%s)(%s));\n",
819: EXT (size), CAST (size), src, CAST (size), dst);
1.1.1.2 root 820: return;
1.1.1.3 root 821:
822: default:
823: break;
1.1.1.2 root 824: }
1.1.1.3 root 825: #elif defined(ACORN_FLAG_OPT) && defined(__GNUC_MINOR__)
826: /*
827: * This is new. Might be quite buggy.
828: */
1.1.1.5 root 829: switch (type) {
830: case flag_av:
831: case flag_sv:
832: case flag_zn:
833: case flag_addx:
834: case flag_subx:
835: break;
836:
837: case flag_logical:
838: if (strcmp (value, "0") == 0) {
839: /* v=c=n=0 z=1 */
840: printf ("\t*(ULONG*)®flags = 0x40000000;\n");
1.1.1.3 root 841: return;
1.1.1.5 root 842: } else {
843: start_brace ();
844: switch (size) {
845: case sz_byte:
846: printf ("\tUBYTE ccr;\n");
847: printf ("\tULONG shift;\n");
848: printf ("\t__asm__(\"mov %%2,%%1,lsl#24\n\ttst %%2,%%2\n\tmov %%0,r15,lsr#24\n\tbic %%0,%%0,#0x30\"\n"
849: "\t: \"=r\" (ccr) : \"r\" (%s), \"r\" (shift) : \"cc\" );\n", value);
850: printf ("\t*((UBYTE*)®flags+3) = ccr;\n");
851: return;
852: case sz_word:
853: printf ("\tUBYTE ccr;\n");
854: printf ("\tULONG shift;\n");
855: printf ("\t__asm__(\"mov %%2,%%1,lsl#16\n\ttst %%2,%%2\n\tmov %%0,r15,lsr#24\n\tbic %%0,%%0,#0x30\"\n"
856: "\t: \"=r\" (ccr) : \"r\" ((WORD)%s), \"r\" (shift) : \"cc\" );\n", value);
857: printf ("\t*((UBYTE*)®flags+3) = ccr;\n");
858: return;
859: case sz_long:
860: printf ("\tUBYTE ccr;\n");
861: printf ("\t__asm__(\"tst %%1,%%1\n\tmov %%0,r15,lsr#24\n\tbic %%0,%%0,#0x30\"\n"
862: "\t: \"=r\" (ccr) : \"r\" ((LONG)%s) : \"cc\" );\n", value);
863: printf ("\t*((UBYTE*)®flags+3) = ccr;\n");
864: return;
865: }
1.1.1.3 root 866: }
1.1.1.5 root 867: break;
868: case flag_add:
869: if (strcmp (dst, "0") == 0) {
870: printf ("/* Error! Hier muss Peter noch was machen !!! (ADD-Flags) */");
871: } else {
872: start_brace ();
873: switch (size) {
874: case sz_byte:
875: printf ("\tULONG ccr, shift, %s;\n", value);
876: 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"
877: "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" (%s), \"r\" (%s), \"r\" (shift) : \"cc\" );\n", value, src, dst);
878: printf ("\t*(ULONG*)®flags = ccr;\n");
879: return;
880: case sz_word:
881: printf ("\tULONG ccr, shift, %s;\n", value);
882: 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"
883: "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" ((WORD)%s), \"r\" ((WORD)%s), \"r\" (shift) : \"cc\" );\n", value, src, dst);
884: printf ("\t*(ULONG*)®flags = ccr;\n");
885: return;
886: case sz_long:
887: printf ("\tULONG ccr, %s;\n", value);
888: printf ("\t__asm__(\"adds %%0,%%3,%%2\n\tmov %%1,r15\n\torr %%1,%%1,%%1,lsr#29\"\n"
889: "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" ((LONG)%s), \"r\" ((LONG)%s) : \"cc\" );\n", value, src, dst);
890: printf ("\t*(ULONG*)®flags = ccr;\n");
891: return;
892: }
1.1.1.3 root 893: }
1.1.1.5 root 894: break;
895: case flag_sub:
896: if (strcmp (dst, "0") == 0) {
897: printf ("/* Error! Hier muss Peter noch was machen !!! (SUB-Flags) */");
898: } else {
899: start_brace ();
900: switch (size) {
901: case sz_byte:
902: printf ("\tULONG ccr, shift, %s;\n", value);
903: 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"
904: "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" (%s), \"r\" (%s), \"r\" (shift) : \"cc\" );\n", value, src, dst);
905: printf ("\t*(ULONG*)®flags = ccr;\n");
906: return;
907: case sz_word:
908: printf ("\tULONG ccr, shift, %s;\n", value);
909: 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"
910: "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" ((WORD)%s), \"r\" ((WORD)%s), \"r\" (shift) : \"cc\" );\n", value, src, dst);
911: printf ("\t*(ULONG*)®flags = ccr;\n");
912: return;
913: case sz_long:
914: printf ("\tULONG ccr, %s;\n", value);
915: printf ("\t__asm__(\"subs %%0,%%3,%%2\n\tmov %%1,r15\n\teor %%1,%%1,#0x20000000\n\torr %%1,%%1,%%1,lsr#29\"\n"
916: "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" ((LONG)%s), \"r\" ((LONG)%s) : \"cc\" );\n", value, src, dst);
917: printf ("\t*(ULONG*)®flags = ccr;\n");
918: return;
919: }
1.1.1.3 root 920: }
1.1.1.5 root 921: break;
922: case flag_cmp:
923: if (strcmp (dst, "0") == 0) {
924: printf ("/*Error! Hier muss Peter noch was machen !!! (CMP-Flags)*/");
925: } else {
926: start_brace ();
927: switch (size) {
928: case sz_byte:
929: printf ("\tULONG shift, ccr;\n");
930: 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"
931: "\t: \"=r\" (ccr) : \"r\" (%s), \"r\" (%s), \"r\" (shift) : \"cc\" );\n", src, dst);
932: printf ("\t*((UBYTE*)®flags+3) = ccr;\n");
933: return;
934: case sz_word:
935: printf ("\tULONG shift, ccr;\n");
936: 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"
937: "\t: \"=r\" (ccr) : \"r\" ((WORD)%s), \"r\" ((WORD)%s), \"r\" (shift) : \"cc\" );\n", src, dst);
938: printf ("\t*((UBYTE*)®flags+3) = ccr;\n");
939: return;
940: case sz_long:
941: printf ("\tULONG ccr;\n");
942: printf ("\t__asm__(\"cmp %%2,%%1\n\tmov %%0,r15,lsr#24\n\teor %%0,%%0,#0x20\"\n"
943: "\t: \"=r\" (ccr) : \"r\" ((LONG)%s), \"r\" ((LONG)%s) : \"cc\" );\n", src, dst);
944: printf ("\t*((UBYTE*)®flags+3) = ccr;\n");
945: /*printf ("\tprintf (\"%%08x %%08x %%08x\\n\", %s, %s, *((ULONG*)®flags));\n", src, dst); */
946: return;
947: }
948: }
949: break;
950: }
1.1 root 951: #endif
1.1.1.5 root 952: genflags_normal (type, size, value, src, dst);
1.1 root 953: }
1.1.1.3 root 954:
1.1.1.7 root 955: static void force_range_for_rox (const char *var, wordsizes size)
956: {
957: /* Could do a modulo operation here... which one is faster? */
958: switch (size) {
959: case sz_long:
960: printf ("\tif (%s >= 33) %s -= 33;\n", var, var);
961: break;
962: case sz_word:
963: printf ("\tif (%s >= 34) %s -= 34;\n", var, var);
964: printf ("\tif (%s >= 17) %s -= 17;\n", var, var);
965: break;
966: case sz_byte:
967: printf ("\tif (%s >= 36) %s -= 36;\n", var, var);
968: printf ("\tif (%s >= 18) %s -= 18;\n", var, var);
969: printf ("\tif (%s >= 9) %s -= 9;\n", var, var);
970: break;
971: }
972: }
973:
974: static const char *cmask (wordsizes size)
975: {
976: switch (size) {
977: case sz_byte: return "0x80";
978: case sz_word: return "0x8000";
979: case sz_long: return "0x80000000";
980: default: abort ();
981: }
982: }
983:
984: static int source_is_imm1_8 (struct instr *i)
985: {
986: return i->stype == 3;
987: }
988:
1.1.1.5 root 989: static void gen_opcode (unsigned long int opcode)
1.1 root 990: {
1.1.1.7 root 991: struct instr *curi = table68k + opcode;
1.1.1.5 root 992: insn_n_cycles = 2;
993:
1.1 root 994: start_brace ();
1.1.1.3 root 995: #if 0
996: printf ("uae_u8 *m68k_pc = regs.pc_p;\n");
997: #endif
998: m68k_pc_offset = 2;
1.1.1.7 root 999: switch (curi->plev) {
1.1.1.3 root 1000: case 0: /* not privileged */
1.1 root 1001: break;
1.1.1.3 root 1002: case 1: /* unprivileged only on 68000 */
1003: if (cpu_level == 0)
1.1 root 1004: break;
1.1.1.3 root 1005: if (next_cpu_level < 0)
1006: next_cpu_level = 0;
1007:
1.1.1.5 root 1008: /* fall through */
1.1 root 1009: case 2: /* priviledged */
1.1.1.3 root 1010: printf ("if (!regs.s) { Exception(8,0); goto %s; }\n", endlabelstr);
1.1.1.5 root 1011: need_endlabel = 1;
1012: start_brace ();
1.1 root 1013: break;
1.1.1.3 root 1014: case 3: /* privileged if size == word */
1.1.1.7 root 1015: if (curi->size == sz_byte)
1.1 root 1016: break;
1.1.1.3 root 1017: printf ("if (!regs.s) { Exception(8,0); goto %s; }\n", endlabelstr);
1.1.1.5 root 1018: need_endlabel = 1;
1019: start_brace ();
1.1 root 1020: break;
1021: }
1.1.1.7 root 1022: switch (curi->mnemo) {
1.1 root 1023: case i_OR:
1024: case i_AND:
1025: case i_EOR:
1.1.1.7 root 1026: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1027: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1028: printf ("\tsrc %c= dst;\n", curi->mnemo == i_OR ? '|' : curi->mnemo == i_AND ? '&' : '^');
1029: genflags (flag_logical, curi->size, "src", "", "");
1030: genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1031: break;
1032: case i_ORSR:
1.1.1.7 root 1033: case i_EORSR:
1.1.1.3 root 1034: printf ("\tMakeSR();\n");
1.1.1.7 root 1035: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1036: if (curi->size == sz_byte) {
1.1.1.3 root 1037: printf ("\tsrc &= 0xFF;\n");
1.1 root 1038: }
1.1.1.7 root 1039: printf ("\tregs.sr %c= src;\n", curi->mnemo == i_EORSR ? '^' : '|');
1.1.1.3 root 1040: printf ("\tMakeFromSR();\n");
1.1 root 1041: break;
1.1.1.3 root 1042: case i_ANDSR:
1043: printf ("\tMakeSR();\n");
1.1.1.7 root 1044: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1045: if (curi->size == sz_byte) {
1.1.1.3 root 1046: printf ("\tsrc |= 0xFF00;\n");
1.1 root 1047: }
1.1.1.3 root 1048: printf ("\tregs.sr &= src;\n");
1049: printf ("\tMakeFromSR();\n");
1.1 root 1050: break;
1.1.1.3 root 1051: case i_SUB:
1.1.1.7 root 1052: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1053: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 1054: start_brace ();
1.1.1.7 root 1055: genflags (flag_sub, curi->size, "newv", "src", "dst");
1056: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1057: break;
1058: case i_SUBA:
1.1.1.7 root 1059: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1060: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1 root 1061: start_brace ();
1.1.1.3 root 1062: printf ("\tuae_u32 newv = dst - src;\n");
1.1.1.7 root 1063: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1 root 1064: break;
1065: case i_SUBX:
1.1.1.7 root 1066: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1067: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 1068: start_brace ();
1.1.1.7 root 1069: printf ("\tuae_u32 newv = dst - src - (GET_XFLG ? 1 : 0);\n");
1070: genflags (flag_subx, curi->size, "newv", "src", "dst");
1071: genflags (flag_zn, curi->size, "newv", "", "");
1072: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1073: break;
1074: case i_SBCD:
1075: /* Let's hope this works... */
1.1.1.7 root 1076: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1077: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 1078: start_brace ();
1.1.1.7 root 1079: printf ("\tuae_u16 newv_lo = (dst & 0xF) - (src & 0xF) - (GET_XFLG ? 1 : 0);\n");
1.1.1.3 root 1080: printf ("\tuae_u16 newv_hi = (dst & 0xF0) - (src & 0xF0);\n");
1081: printf ("\tuae_u16 newv;\n");
1.1.1.7 root 1082: printf ("\tint cflg;\n");
1.1.1.3 root 1083: printf ("\tif (newv_lo > 9) { newv_lo-=6; newv_hi-=0x10; }\n");
1084: printf ("\tnewv = newv_hi + (newv_lo & 0xF);");
1.1.1.7 root 1085: printf ("\tSET_CFLG (cflg = (newv_hi & 0x1F0) > 0x90);\n");
1086: duplicate_carry ();
1087: printf ("\tif (cflg) newv -= 0x60;\n");
1088: genflags (flag_zn, curi->size, "newv", "", "");
1089: genflags (flag_sv, curi->size, "newv", "src", "dst");
1090: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1091: break;
1092: case i_ADD:
1.1.1.7 root 1093: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1094: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 1095: start_brace ();
1.1.1.7 root 1096: genflags (flag_add, curi->size, "newv", "src", "dst");
1097: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1098: break;
1.1.1.3 root 1099: case i_ADDA:
1.1.1.7 root 1100: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1101: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1 root 1102: start_brace ();
1.1.1.3 root 1103: printf ("\tuae_u32 newv = dst + src;\n");
1.1.1.7 root 1104: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1 root 1105: break;
1106: case i_ADDX:
1.1.1.7 root 1107: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1108: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 1109: start_brace ();
1.1.1.7 root 1110: printf ("\tuae_u32 newv = dst + src + (GET_XFLG ? 1 : 0);\n");
1111: genflags (flag_addx, curi->size, "newv", "src", "dst");
1112: genflags (flag_zn, curi->size, "newv", "", "");
1113: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1114: break;
1115: case i_ABCD:
1.1.1.7 root 1116: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1117: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 1118: start_brace ();
1.1.1.7 root 1119: printf ("\tuae_u16 newv_lo = (src & 0xF) + (dst & 0xF) + (GET_XFLG ? 1 : 0);\n");
1.1.1.3 root 1120: printf ("\tuae_u16 newv_hi = (src & 0xF0) + (dst & 0xF0);\n");
1121: printf ("\tuae_u16 newv;\n");
1.1.1.7 root 1122: printf ("\tint cflg;\n");
1.1.1.3 root 1123: printf ("\tif (newv_lo > 9) { newv_lo +=6; }\n");
1124: printf ("\tnewv = newv_hi + newv_lo;");
1.1.1.7 root 1125: printf ("\tSET_CFLG (cflg = (newv & 0x1F0) > 0x90);\n");
1126: duplicate_carry ();
1127: printf ("\tif (cflg) newv += 0x60;\n");
1128: genflags (flag_zn, curi->size, "newv", "", "");
1129: genflags (flag_sv, curi->size, "newv", "src", "dst");
1130: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1131: break;
1132: case i_NEG:
1.1.1.7 root 1133: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1 root 1134: start_brace ();
1.1.1.7 root 1135: genflags (flag_sub, curi->size, "dst", "src", "0");
1136: genastore ("dst", curi->smode, "srcreg", curi->size, "src");
1.1 root 1137: break;
1138: case i_NEGX:
1.1.1.7 root 1139: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1 root 1140: start_brace ();
1.1.1.7 root 1141: printf ("\tuae_u32 newv = 0 - src - (GET_XFLG ? 1 : 0);\n");
1142: genflags (flag_subx, curi->size, "newv", "src", "0");
1143: genflags (flag_zn, curi->size, "newv", "", "");
1144: genastore ("newv", curi->smode, "srcreg", curi->size, "src");
1.1 root 1145: break;
1.1.1.3 root 1146: case i_NBCD:
1.1.1.7 root 1147: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1 root 1148: start_brace ();
1.1.1.7 root 1149: printf ("\tuae_u16 newv_lo = - (src & 0xF) - (GET_XFLG ? 1 : 0);\n");
1.1.1.3 root 1150: printf ("\tuae_u16 newv_hi = - (src & 0xF0);\n");
1151: printf ("\tuae_u16 newv;\n");
1.1.1.7 root 1152: printf ("\tint cflg;\n");
1.1.1.3 root 1153: printf ("\tif (newv_lo > 9) { newv_lo-=6; newv_hi-=0x10; }\n");
1154: printf ("\tnewv = newv_hi + (newv_lo & 0xF);");
1.1.1.7 root 1155: printf ("\tSET_CFLG (cflg = (newv_hi & 0x1F0) > 0x90);\n");
1.1.1.8 root 1156: duplicate_carry();
1.1.1.7 root 1157: printf ("\tif (cflg) newv -= 0x60;\n");
1158: genflags (flag_zn, curi->size, "newv", "", "");
1159: genastore ("newv", curi->smode, "srcreg", curi->size, "src");
1.1 root 1160: break;
1.1.1.3 root 1161: case i_CLR:
1.1.1.7 root 1162: genamode (curi->smode, "srcreg", curi->size, "src", 2, 0);
1163: genflags (flag_logical, curi->size, "0", "", "");
1164: genastore ("0", curi->smode, "srcreg", curi->size, "src");
1.1 root 1165: break;
1.1.1.3 root 1166: case i_NOT:
1.1.1.7 root 1167: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1 root 1168: start_brace ();
1.1.1.3 root 1169: printf ("\tuae_u32 dst = ~src;\n");
1.1.1.7 root 1170: genflags (flag_logical, curi->size, "dst", "", "");
1171: genastore ("dst", curi->smode, "srcreg", curi->size, "src");
1.1 root 1172: break;
1173: case i_TST:
1.1.1.7 root 1174: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1175: genflags (flag_logical, curi->size, "src", "", "");
1.1 root 1176: break;
1177: case i_BTST:
1.1.1.7 root 1178: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1179: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1180: if (curi->size == sz_byte)
1.1.1.3 root 1181: printf ("\tsrc &= 7;\n");
1.1 root 1182: else
1.1.1.3 root 1183: printf ("\tsrc &= 31;\n");
1.1.1.7 root 1184: printf ("\tSET_ZFLG (1 ^ ((dst >> src) & 1));\n");
1.1 root 1185: break;
1186: case i_BCHG:
1.1.1.7 root 1187: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1188: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1189: if (curi->size == sz_byte)
1.1.1.3 root 1190: printf ("\tsrc &= 7;\n");
1.1 root 1191: else
1.1.1.3 root 1192: printf ("\tsrc &= 31;\n");
1193: printf ("\tdst ^= (1 << src);\n");
1.1.1.9 ! root 1194: printf ("\tSET_ZFLG (((uae_u32)dst & (1 << src)) >> src);\n");
1.1.1.7 root 1195: genastore ("dst", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1196: break;
1197: case i_BCLR:
1.1.1.7 root 1198: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1199: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1200: if (curi->size == sz_byte)
1.1.1.3 root 1201: printf ("\tsrc &= 7;\n");
1.1 root 1202: else
1.1.1.3 root 1203: printf ("\tsrc &= 31;\n");
1.1.1.7 root 1204: printf ("\tSET_ZFLG (1 ^ ((dst >> src) & 1));\n");
1.1.1.3 root 1205: printf ("\tdst &= ~(1 << src);\n");
1.1.1.7 root 1206: genastore ("dst", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1207: break;
1208: case i_BSET:
1.1.1.7 root 1209: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1210: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1211: if (curi->size == sz_byte)
1.1.1.3 root 1212: printf ("\tsrc &= 7;\n");
1.1 root 1213: else
1.1.1.3 root 1214: printf ("\tsrc &= 31;\n");
1.1.1.7 root 1215: printf ("\tSET_ZFLG (1 ^ ((dst >> src) & 1));\n");
1.1.1.3 root 1216: printf ("\tdst |= (1 << src);\n");
1.1.1.7 root 1217: genastore ("dst", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1218: break;
1219: case i_CMPM:
1220: case i_CMP:
1.1.1.7 root 1221: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1222: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 1223: start_brace ();
1.1.1.7 root 1224: genflags (flag_cmp, curi->size, "newv", "src", "dst");
1.1 root 1225: break;
1.1.1.3 root 1226: case i_CMPA:
1.1.1.7 root 1227: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1228: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1 root 1229: start_brace ();
1.1.1.5 root 1230: genflags (flag_cmp, sz_long, "newv", "src", "dst");
1.1 root 1231: break;
1232: /* The next two are coded a little unconventional, but they are doing
1233: * weird things... */
1234: case i_MVPRM:
1.1.1.7 root 1235: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.5 root 1236:
1237: printf ("\tuaecptr memp = m68k_areg(regs, dstreg) + (uae_s32)(uae_s16)%s;\n", gen_nextiword ());
1.1.1.7 root 1238: if (curi->size == sz_word) {
1.1.1.3 root 1239: printf ("\tput_byte(memp, src >> 8); put_byte(memp + 2, src);\n");
1.1 root 1240: } else {
1.1.1.3 root 1241: printf ("\tput_byte(memp, src >> 24); put_byte(memp + 2, src >> 16);\n");
1242: printf ("\tput_byte(memp + 4, src >> 8); put_byte(memp + 6, src);\n");
1.1 root 1243: }
1244: break;
1.1.1.3 root 1245: case i_MVPMR:
1.1.1.5 root 1246: printf ("\tuaecptr memp = m68k_areg(regs, srcreg) + (uae_s32)(uae_s16)%s;\n", gen_nextiword ());
1.1.1.7 root 1247: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1248: if (curi->size == sz_word) {
1.1.1.3 root 1249: printf ("\tuae_u16 val = (get_byte(memp) << 8) + get_byte(memp + 2);\n");
1.1 root 1250: } else {
1.1.1.3 root 1251: printf ("\tuae_u32 val = (get_byte(memp) << 24) + (get_byte(memp + 2) << 16)\n");
1252: printf (" + (get_byte(memp + 4) << 8) + get_byte(memp + 6);\n");
1.1 root 1253: }
1.1.1.7 root 1254: genastore ("val", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1255: break;
1256: case i_MOVE:
1.1.1.7 root 1257: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1258: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1259: genflags (flag_logical, curi->size, "src", "", "");
1260: genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1261: break;
1262: case i_MOVEA:
1.1.1.7 root 1263: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1264: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1265: if (curi->size == sz_word) {
1.1.1.3 root 1266: printf ("\tuae_u32 val = (uae_s32)(uae_s16)src;\n");
1.1 root 1267: } else {
1.1.1.3 root 1268: printf ("\tuae_u32 val = src;\n");
1.1 root 1269: }
1.1.1.7 root 1270: genastore ("val", curi->dmode, "dstreg", sz_long, "dst");
1.1 root 1271: break;
1.1.1.3 root 1272: case i_MVSR2:
1.1.1.7 root 1273: genamode (curi->smode, "srcreg", sz_word, "src", 2, 0);
1.1.1.3 root 1274: printf ("\tMakeSR();\n");
1.1.1.7 root 1275: if (curi->size == sz_byte)
1276: genastore ("regs.sr & 0xff", curi->smode, "srcreg", sz_word, "src");
1.1 root 1277: else
1.1.1.7 root 1278: genastore ("regs.sr", curi->smode, "srcreg", sz_word, "src");
1.1 root 1279: break;
1280: case i_MV2SR:
1.1.1.7 root 1281: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1282: if (curi->size == sz_byte)
1.1.1.3 root 1283: printf ("\tMakeSR();\n\tregs.sr &= 0xFF00;\n\tregs.sr |= src & 0xFF;\n");
1284: else {
1285: printf ("\tregs.sr = src;\n");
1.1 root 1286: }
1.1.1.3 root 1287: printf ("\tMakeFromSR();\n");
1.1 root 1288: break;
1.1.1.3 root 1289: case i_SWAP:
1.1.1.7 root 1290: genamode (curi->smode, "srcreg", sz_long, "src", 1, 0);
1.1 root 1291: start_brace ();
1.1.1.3 root 1292: printf ("\tuae_u32 dst = ((src >> 16)&0xFFFF) | ((src&0xFFFF)<<16);\n");
1.1.1.5 root 1293: genflags (flag_logical, sz_long, "dst", "", "");
1.1.1.7 root 1294: genastore ("dst", curi->smode, "srcreg", sz_long, "src");
1.1 root 1295: break;
1296: case i_EXG:
1.1.1.7 root 1297: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1298: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1299: genastore ("dst", curi->smode, "srcreg", curi->size, "src");
1300: genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1301: break;
1302: case i_EXT:
1.1.1.7 root 1303: genamode (curi->smode, "srcreg", sz_long, "src", 1, 0);
1.1 root 1304: start_brace ();
1.1.1.7 root 1305: switch (curi->size) {
1.1.1.3 root 1306: case sz_byte: printf ("\tuae_u32 dst = (uae_s32)(uae_s8)src;\n"); break;
1307: case sz_word: printf ("\tuae_u16 dst = (uae_s16)(uae_s8)src;\n"); break;
1308: case sz_long: printf ("\tuae_u32 dst = (uae_s32)(uae_s16)src;\n"); break;
1.1.1.5 root 1309: default: abort ();
1.1 root 1310: }
1.1.1.5 root 1311: genflags (flag_logical,
1.1.1.7 root 1312: curi->size == sz_word ? sz_word : sz_long, "dst", "", "");
1313: genastore ("dst", curi->smode, "srcreg",
1314: curi->size == sz_word ? sz_word : sz_long, "src");
1.1 root 1315: break;
1316: case i_MVMEL:
1.1.1.5 root 1317: genmovemel (opcode);
1.1 root 1318: break;
1319: case i_MVMLE:
1.1.1.5 root 1320: genmovemle (opcode);
1.1 root 1321: break;
1322: case i_TRAP:
1.1.1.7 root 1323: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.5 root 1324: sync_m68k_pc ();
1.1.1.3 root 1325: printf ("\tException(src+32,0);\n");
1326: m68k_pc_offset = 0;
1.1 root 1327: break;
1328: case i_MVR2USP:
1.1.1.7 root 1329: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.3 root 1330: printf ("\tregs.usp = src;\n");
1.1 root 1331: break;
1.1.1.3 root 1332: case i_MVUSP2R:
1.1.1.7 root 1333: genamode (curi->smode, "srcreg", curi->size, "src", 2, 0);
1334: genastore ("regs.usp", curi->smode, "srcreg", curi->size, "src");
1.1 root 1335: break;
1336: case i_RESET:
1.1.1.3 root 1337: printf ("\tcustomreset();\n");
1.1 root 1338: break;
1339: case i_NOP:
1340: break;
1341: case i_STOP:
1.1.1.7 root 1342: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.3 root 1343: printf ("\tregs.sr = src;\n");
1344: printf ("\tMakeFromSR();\n");
1345: printf ("\tm68k_setstopped(1);\n");
1.1 root 1346: break;
1347: case i_RTE:
1.1.1.3 root 1348: if (cpu_level == 0) {
1349: genamode (Aipi, "7", sz_word, "sr", 1, 0);
1350: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1351: printf ("\tregs.sr = sr; m68k_setpc_rte(pc);\n");
1352: fill_prefetch_0 ();
1353: printf ("\tMakeFromSR();\n");
1354: } else {
1.1 root 1355: int old_brace_level = n_braces;
1.1.1.3 root 1356: if (next_cpu_level < 0)
1357: next_cpu_level = 0;
1358: printf ("\tuae_u16 newsr; uae_u32 newpc; for (;;) {\n");
1359: genamode (Aipi, "7", sz_word, "sr", 1, 0);
1360: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1361: genamode (Aipi, "7", sz_word, "format", 1, 0);
1362: printf ("\tnewsr = sr; newpc = pc;\n");
1363: printf ("\tif ((format & 0xF000) == 0x0000) { break; }\n");
1364: printf ("\telse if ((format & 0xF000) == 0x1000) { ; }\n");
1365: printf ("\telse if ((format & 0xF000) == 0x2000) { m68k_areg(regs, 7) += 4; break; }\n");
1366: printf ("\telse if ((format & 0xF000) == 0x8000) { m68k_areg(regs, 7) += 50; break; }\n");
1367: printf ("\telse if ((format & 0xF000) == 0x9000) { m68k_areg(regs, 7) += 12; break; }\n");
1368: printf ("\telse if ((format & 0xF000) == 0xa000) { m68k_areg(regs, 7) += 24; break; }\n");
1369: printf ("\telse if ((format & 0xF000) == 0xb000) { m68k_areg(regs, 7) += 84; break; }\n");
1370: printf ("\telse { Exception(14,0); goto %s; }\n", endlabelstr);
1371: printf ("\tregs.sr = newsr; MakeFromSR();\n}\n");
1.1 root 1372: pop_braces (old_brace_level);
1.1.1.3 root 1373: printf ("\tregs.sr = newsr; MakeFromSR();\n");
1374: printf ("\tm68k_setpc_rte(newpc);\n");
1375: fill_prefetch_0 ();
1.1.1.5 root 1376: need_endlabel = 1;
1.1 root 1377: }
1.1.1.3 root 1378: /* PC is set and prefetch filled. */
1379: m68k_pc_offset = 0;
1.1 root 1380: break;
1381: case i_RTD:
1.1.1.3 root 1382: printf ("\tcompiler_flush_jsr_stack();\n");
1383: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1.1.1.7 root 1384: genamode (curi->smode, "srcreg", curi->size, "offs", 1, 0);
1.1.1.3 root 1385: printf ("\tm68k_areg(regs, 7) += offs;\n");
1386: printf ("\tm68k_setpc_rte(pc);\n");
1387: fill_prefetch_0 ();
1388: /* PC is set and prefetch filled. */
1389: m68k_pc_offset = 0;
1.1 root 1390: break;
1391: case i_LINK:
1.1.1.3 root 1392: genamode (Apdi, "7", sz_long, "old", 2, 0);
1.1.1.7 root 1393: genamode (curi->smode, "srcreg", sz_long, "src", 1, 0);
1.1.1.3 root 1394: genastore ("src", Apdi, "7", sz_long, "old");
1.1.1.7 root 1395: genastore ("m68k_areg(regs, 7)", curi->smode, "srcreg", sz_long, "src");
1396: genamode (curi->dmode, "dstreg", curi->size, "offs", 1, 0);
1.1.1.3 root 1397: printf ("\tm68k_areg(regs, 7) += offs;\n");
1.1 root 1398: break;
1399: case i_UNLK:
1.1.1.7 root 1400: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.3 root 1401: printf ("\tm68k_areg(regs, 7) = src;\n");
1402: genamode (Aipi, "7", sz_long, "old", 1, 0);
1.1.1.7 root 1403: genastore ("old", curi->smode, "srcreg", curi->size, "src");
1.1 root 1404: break;
1405: case i_RTS:
1.1.1.3 root 1406: printf ("\tm68k_do_rts();\n");
1407: fill_prefetch_0 ();
1408: m68k_pc_offset = 0;
1.1 root 1409: break;
1410: case i_TRAPV:
1.1.1.3 root 1411: sync_m68k_pc ();
1.1.1.7 root 1412: printf ("\tif (GET_VFLG) { Exception(7,m68k_getpc()); goto %s; }\n", endlabelstr);
1.1.1.5 root 1413: need_endlabel = 1;
1.1 root 1414: break;
1.1.1.2 root 1415: case i_RTR:
1.1.1.3 root 1416: printf ("\tcompiler_flush_jsr_stack();\n");
1417: printf ("\tMakeSR();\n");
1418: genamode (Aipi, "7", sz_word, "sr", 1, 0);
1419: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1420: printf ("\tregs.sr &= 0xFF00; sr &= 0xFF;\n");
1421: printf ("\tregs.sr |= sr; m68k_setpc(pc);\n");
1422: fill_prefetch_0 ();
1423: printf ("\tMakeFromSR();\n");
1424: m68k_pc_offset = 0;
1.1 root 1425: break;
1426: case i_JSR:
1.1.1.7 root 1427: genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
1.1.1.3 root 1428: printf ("\tm68k_do_jsr(m68k_getpc() + %d, srca);\n", m68k_pc_offset);
1429: fill_prefetch_0 ();
1430: m68k_pc_offset = 0;
1431: break;
1432: case i_JMP:
1.1.1.7 root 1433: genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
1.1.1.3 root 1434: printf ("\tm68k_setpc(srca);\n");
1435: fill_prefetch_0 ();
1436: m68k_pc_offset = 0;
1.1 root 1437: break;
1438: case i_BSR:
1.1.1.7 root 1439: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.3 root 1440: printf ("\tuae_s32 s = (uae_s32)src + 2;\n");
1441: if (using_exception_3) {
1442: printf ("\tif (src & 1) {\n");
1443: printf ("\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1444: printf ("\t\tlast_fault_for_exception_3 = m68k_getpc() + s;\n");
1445: printf ("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1446: printf ("\t}\n");
1.1.1.5 root 1447: need_endlabel = 1;
1.1.1.3 root 1448: }
1449: printf ("\tm68k_do_bsr(m68k_getpc() + %d, s);\n", m68k_pc_offset);
1450: fill_prefetch_0 ();
1451: m68k_pc_offset = 0;
1.1 root 1452: break;
1453: case i_Bcc:
1.1.1.7 root 1454: if (curi->size == sz_long) {
1.1.1.3 root 1455: if (cpu_level < 2) {
1456: printf ("\tm68k_incpc(2);\n");
1.1.1.7 root 1457: printf ("\tif (!cctrue(%d)) goto %s;\n", curi->cc, endlabelstr);
1.1.1.3 root 1458: printf ("\t\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1459: printf ("\t\tlast_fault_for_exception_3 = m68k_getpc() + 1;\n");
1460: printf ("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1.1.1.5 root 1461: need_endlabel = 1;
1.1.1.3 root 1462: } else {
1463: if (next_cpu_level < 1)
1464: next_cpu_level = 1;
1465: }
1466: }
1.1.1.7 root 1467: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1468: printf ("\tif (!cctrue(%d)) goto didnt_jump;\n", curi->cc);
1.1.1.3 root 1469: if (using_exception_3) {
1470: printf ("\tif (src & 1) {\n");
1471: printf ("\t\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1472: printf ("\t\tlast_fault_for_exception_3 = m68k_getpc() + 2 + (uae_s32)src;\n");
1473: printf ("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1474: printf ("\t}\n");
1.1.1.5 root 1475: need_endlabel = 1;
1.1.1.3 root 1476: }
1.1 root 1477: #ifdef USE_COMPILER
1.1.1.3 root 1478: printf ("\tm68k_setpc_bcc(m68k_getpc() + 2 + (uae_s32)src);\n");
1.1 root 1479: #else
1.1.1.3 root 1480: printf ("\tm68k_incpc ((uae_s32)src + 2);\n");
1.1 root 1481: #endif
1.1.1.3 root 1482: fill_prefetch_0 ();
1483: printf ("\tgoto %s;\n", endlabelstr);
1484: printf ("didnt_jump:;\n");
1.1.1.5 root 1485: need_endlabel = 1;
1.1 root 1486: break;
1487: case i_LEA:
1.1.1.7 root 1488: genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
1489: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1490: genastore ("srca", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1491: break;
1492: case i_PEA:
1.1.1.7 root 1493: genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
1.1.1.3 root 1494: genamode (Apdi, "7", sz_long, "dst", 2, 0);
1495: genastore ("srca", Apdi, "7", sz_long, "dst");
1.1 root 1496: break;
1497: case i_DBcc:
1.1.1.7 root 1498: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1499: genamode (curi->dmode, "dstreg", curi->size, "offs", 1, 0);
1.1.1.3 root 1500:
1.1.1.7 root 1501: printf ("\tif (!cctrue(%d)) {\n", curi->cc);
1502: genastore ("(src-1)", curi->smode, "srcreg", curi->size, "src");
1.1.1.3 root 1503:
1504: printf ("\t\tif (src) {\n");
1505: if (using_exception_3) {
1506: printf ("\t\t\tif (offs & 1) {\n");
1507: printf ("\t\t\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1508: printf ("\t\t\tlast_fault_for_exception_3 = m68k_getpc() + 2 + (uae_s32)offs + 2;\n");
1509: printf ("\t\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1510: printf ("\t\t}\n");
1.1.1.5 root 1511: need_endlabel = 1;
1.1.1.3 root 1512: }
1.1 root 1513: #ifdef USE_COMPILER
1.1.1.3 root 1514: printf ("\t\t\tm68k_setpc_bcc(m68k_getpc() + (uae_s32)offs + 2);\n");
1.1 root 1515: #else
1.1.1.3 root 1516: printf ("\t\t\tm68k_incpc((uae_s32)offs + 2);\n");
1.1 root 1517: #endif
1.1.1.3 root 1518: fill_prefetch_0 ();
1519: printf ("\t\tgoto %s;\n", endlabelstr);
1520: printf ("\t\t}\n");
1521: printf ("\t}\n");
1.1.1.5 root 1522: need_endlabel = 1;
1.1 root 1523: break;
1.1.1.3 root 1524: case i_Scc:
1.1.1.7 root 1525: genamode (curi->smode, "srcreg", curi->size, "src", 2, 0);
1.1 root 1526: start_brace ();
1.1.1.7 root 1527: printf ("\tint val = cctrue(%d) ? 0xff : 0;\n", curi->cc);
1528: genastore ("val", curi->smode, "srcreg", curi->size, "src");
1.1 root 1529: break;
1530: case i_DIVU:
1.1.1.3 root 1531: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1532: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1533: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1.1.9 ! root 1534: /* Clear V flag when dividing by zero - Alcatraz Odyssey demo depends
! 1535: * on this (actually, it's doing a DIVS). */
! 1536: printf ("\tif (src == 0) { SET_VFLG (0); Exception (5, oldpc); goto %s; } else {\n", endlabelstr);
1.1.1.3 root 1537: printf ("\tuae_u32 newv = (uae_u32)dst / (uae_u32)(uae_u16)src;\n");
1538: printf ("\tuae_u32 rem = (uae_u32)dst %% (uae_u32)(uae_u16)src;\n");
1.1 root 1539: /* The N flag appears to be set each time there is an overflow.
1540: * Weird. */
1.1.1.7 root 1541: printf ("\tif (newv > 0xffff) { SET_VFLG (1); SET_NFLG (1); SET_CFLG (0); } else\n\t{\n");
1.1.1.5 root 1542: genflags (flag_logical, sz_word, "newv", "", "");
1.1.1.3 root 1543: printf ("\tnewv = (newv & 0xffff) | ((uae_u32)rem << 16);\n");
1.1.1.7 root 1544: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1.1.3 root 1545: printf ("\t}\n");
1546: printf ("\t}\n");
1.1.1.5 root 1547: insn_n_cycles += 68;
1548: need_endlabel = 1;
1.1.1.3 root 1549: break;
1550: case i_DIVS:
1551: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1552: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1553: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1.1.9 ! root 1554: printf ("\tif (src == 0) { SET_VFLG (0); Exception(5,oldpc); goto %s; } else {\n", endlabelstr);
1.1.1.3 root 1555: printf ("\tuae_s32 newv = (uae_s32)dst / (uae_s32)(uae_s16)src;\n");
1556: printf ("\tuae_u16 rem = (uae_s32)dst %% (uae_s32)(uae_s16)src;\n");
1.1.1.7 root 1557: printf ("\tif ((newv & 0xffff8000) != 0 && (newv & 0xffff8000) != 0xffff8000) { SET_VFLG (1); SET_NFLG (1); SET_CFLG (0); } else\n\t{\n");
1.1.1.3 root 1558: printf ("\tif (((uae_s16)rem < 0) != ((uae_s32)dst < 0)) rem = -rem;\n");
1.1.1.5 root 1559: genflags (flag_logical, sz_word, "newv", "", "");
1.1.1.3 root 1560: printf ("\tnewv = (newv & 0xffff) | ((uae_u32)rem << 16);\n");
1.1.1.7 root 1561: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1.1.3 root 1562: printf ("\t}\n");
1563: printf ("\t}\n");
1.1.1.5 root 1564: insn_n_cycles += 72;
1565: need_endlabel = 1;
1.1.1.3 root 1566: break;
1567: case i_MULU:
1.1.1.7 root 1568: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1569: genamode (curi->dmode, "dstreg", sz_word, "dst", 1, 0);
1.1 root 1570: start_brace ();
1.1.1.3 root 1571: printf ("\tuae_u32 newv = (uae_u32)(uae_u16)dst * (uae_u32)(uae_u16)src;\n");
1.1.1.5 root 1572: genflags (flag_logical, sz_long, "newv", "", "");
1.1.1.7 root 1573: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1.1.5 root 1574: insn_n_cycles += 32;
1.1 root 1575: break;
1576: case i_MULS:
1.1.1.7 root 1577: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1578: genamode (curi->dmode, "dstreg", sz_word, "dst", 1, 0);
1.1 root 1579: start_brace ();
1.1.1.3 root 1580: printf ("\tuae_u32 newv = (uae_s32)(uae_s16)dst * (uae_s32)(uae_s16)src;\n");
1.1.1.5 root 1581: genflags (flag_logical, sz_long, "newv", "", "");
1.1.1.7 root 1582: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1.1.5 root 1583: insn_n_cycles += 32;
1.1 root 1584: break;
1585: case i_CHK:
1.1.1.3 root 1586: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1587: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1588: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1589: printf ("\tif ((uae_s32)dst < 0) { SET_NFLG (1); Exception(6,oldpc); goto %s; }\n", endlabelstr);
1590: printf ("\telse if (dst > src) { SET_NFLG (0); Exception(6,oldpc); goto %s; }\n", endlabelstr);
1.1.1.5 root 1591: need_endlabel = 1;
1.1 root 1592: break;
1.1.1.3 root 1593:
1.1 root 1594: case i_CHK2:
1.1.1.3 root 1595: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1596: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1597: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1.1.1.3 root 1598: printf ("\t{uae_s32 upper,lower,reg = regs.regs[(extra >> 12) & 15];\n");
1.1.1.7 root 1599: switch (curi->size) {
1.1.1.3 root 1600: case sz_byte:
1601: printf ("\tlower=(uae_s32)(uae_s8)get_byte(dsta); upper = (uae_s32)(uae_s8)get_byte(dsta+1);\n");
1602: printf ("\tif ((extra & 0x8000) == 0) reg = (uae_s32)(uae_s8)reg;\n");
1603: break;
1604: case sz_word:
1605: printf ("\tlower=(uae_s32)(uae_s16)get_word(dsta); upper = (uae_s32)(uae_s16)get_word(dsta+2);\n");
1606: printf ("\tif ((extra & 0x8000) == 0) reg = (uae_s32)(uae_s16)reg;\n");
1607: break;
1608: case sz_long:
1609: printf ("\tlower=get_long(dsta); upper = get_long(dsta+4);\n");
1610: break;
1611: default:
1.1.1.5 root 1612: abort ();
1.1.1.3 root 1613: }
1.1.1.7 root 1614: printf ("\tSET_ZFLG (upper == reg || lower == reg);\n");
1615: printf ("\tSET_CFLG (lower <= upper ? reg < lower || reg > upper : reg > upper || reg < lower);\n");
1616: printf ("\tif ((extra & 0x800) && GET_CFLG) { Exception(6,oldpc); goto %s; }\n}\n", endlabelstr);
1.1.1.5 root 1617: need_endlabel = 1;
1.1.1.3 root 1618: break;
1619:
1620: case i_ASR:
1.1.1.7 root 1621: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1622: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1.1.3 root 1623: start_brace ();
1.1.1.7 root 1624: switch (curi->size) {
1625: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1626: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1.1.1.3 root 1627: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1.1.5 root 1628: default: abort ();
1.1 root 1629: }
1.1.1.7 root 1630: printf ("\tuae_u32 sign = (%s & val) >> %d;\n", cmask (curi->size), bit_size (curi->size) - 1);
1.1.1.3 root 1631: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1632: printf ("\tCLEAR_CZNV;\n");
1633: printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
1634: printf ("\t\tval = %s & (uae_u32)-sign;\n", bit_mask (curi->size));
1635: printf ("\t\tSET_CFLG (sign);\n");
1636: duplicate_carry ();
1637: if (source_is_imm1_8 (curi))
1638: printf ("\t} else {\n");
1639: else
1640: printf ("\t} else if (cnt > 0) {\n");
1641: printf ("\t\tval >>= cnt - 1;\n");
1642: printf ("\t\tSET_CFLG (val & 1);\n");
1643: duplicate_carry ();
1644: printf ("\t\tval >>= 1;\n");
1645: printf ("\t\tval |= (%s << (%d - cnt)) & (uae_u32)-sign;\n",
1646: bit_mask (curi->size),
1647: bit_size (curi->size));
1648: printf ("\t\tval &= %s;\n", bit_mask (curi->size));
1649: printf ("\t}\n");
1650: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1651: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1652: break;
1653: case i_ASL:
1.1.1.7 root 1654: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1655: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1656: start_brace ();
1.1.1.7 root 1657: switch (curi->size) {
1658: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1659: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1.1.1.3 root 1660: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1.1.5 root 1661: default: abort ();
1.1 root 1662: }
1.1.1.3 root 1663: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1664: printf ("\tCLEAR_CZNV;\n");
1665: printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
1666: printf ("\t\tSET_VFLG (val != 0);\n");
1667: printf ("\t\tSET_CFLG (cnt == %d ? val & 1 : 0);\n",
1668: bit_size (curi->size));
1669: duplicate_carry ();
1.1.1.3 root 1670: printf ("\t\tval = 0;\n");
1.1.1.7 root 1671: if (source_is_imm1_8 (curi))
1672: printf ("\t} else {\n");
1673: else
1674: printf ("\t} else if (cnt > 0) {\n");
1.1.1.3 root 1675: printf ("\t\tuae_u32 mask = (%s << (%d - cnt)) & %s;\n",
1.1.1.7 root 1676: bit_mask (curi->size),
1677: bit_size (curi->size) - 1,
1678: bit_mask (curi->size));
1679: printf ("\t\tSET_VFLG ((val & mask) != mask && (val & mask) != 0);\n");
1680: printf ("\t\tval <<= cnt - 1;\n");
1681: printf ("\t\tSET_CFLG ((val & %s) >> %d);\n", cmask (curi->size), bit_size (curi->size) - 1);
1682: duplicate_carry ();
1683: printf ("\t\tval <<= 1;\n");
1684: printf ("\t\tval &= %s;\n", bit_mask (curi->size));
1685: printf ("\t}\n");
1686: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1687: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1688: break;
1689: case i_LSR:
1.1.1.7 root 1690: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1691: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1692: start_brace ();
1.1.1.7 root 1693: switch (curi->size) {
1694: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1695: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1.1.1.3 root 1696: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1.1.5 root 1697: default: abort ();
1.1 root 1698: }
1.1.1.3 root 1699: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1700: printf ("\tCLEAR_CZNV;\n");
1701: printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
1702: printf ("\t\tSET_CFLG ((cnt == %d) & (val >> %d));\n",
1703: bit_size (curi->size), bit_size (curi->size) - 1);
1704: duplicate_carry ();
1.1.1.3 root 1705: printf ("\t\tval = 0;\n");
1.1.1.7 root 1706: if (source_is_imm1_8 (curi))
1707: printf ("\t} else {\n");
1708: else
1709: printf ("\t} else if (cnt > 0) {\n");
1710: printf ("\t\tval >>= cnt - 1;\n");
1711: printf ("\t\tSET_CFLG (val & 1);\n");
1712: duplicate_carry ();
1713: printf ("\t\tval >>= 1;\n");
1714: printf ("\t}\n");
1715: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1716: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1717: break;
1718: case i_LSL:
1.1.1.7 root 1719: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1720: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1721: start_brace ();
1.1.1.7 root 1722: switch (curi->size) {
1723: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1724: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1.1.1.3 root 1725: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1.1.5 root 1726: default: abort ();
1.1 root 1727: }
1.1.1.3 root 1728: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1729: printf ("\tCLEAR_CZNV;\n");
1730: printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
1731: printf ("\t\tSET_CFLG (cnt == %d ? val & 1 : 0);\n",
1732: bit_size (curi->size));
1733: duplicate_carry ();
1.1.1.3 root 1734: printf ("\t\tval = 0;\n");
1.1.1.7 root 1735: if (source_is_imm1_8 (curi))
1736: printf ("\t} else {\n");
1737: else
1738: printf ("\t} else if (cnt > 0) {\n");
1739: printf ("\t\tval <<= (cnt - 1);\n");
1740: printf ("\t\tSET_CFLG ((val & %s) >> %d);\n", cmask (curi->size), bit_size (curi->size) - 1);
1741: duplicate_carry ();
1742: printf ("\t\tval <<= 1;\n");
1743: printf ("\tval &= %s;\n", bit_mask (curi->size));
1744: printf ("\t}\n");
1745: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1746: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1747: break;
1748: case i_ROL:
1.1.1.7 root 1749: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1750: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1751: start_brace ();
1.1.1.7 root 1752: switch (curi->size) {
1753: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1754: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1.1.1.3 root 1755: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1.1.5 root 1756: default: abort ();
1.1 root 1757: }
1.1.1.3 root 1758: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1759: printf ("\tCLEAR_CZNV;\n");
1760: if (source_is_imm1_8 (curi))
1761: printf ("{");
1762: else
1763: printf ("\tif (cnt > 0) {\n");
1764: printf ("\tuae_u32 loval;\n");
1765: printf ("\tcnt &= %d;\n", bit_size (curi->size) - 1);
1766: printf ("\tloval = val >> (%d - cnt);\n", bit_size (curi->size));
1767: printf ("\tval <<= cnt;\n");
1768: printf ("\tval |= loval;\n");
1769: printf ("\tval &= %s;\n", bit_mask (curi->size));
1770: printf ("\tSET_CFLG (val & 1);\n");
1771: printf ("}\n");
1772: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1773: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1774: break;
1775: case i_ROR:
1.1.1.7 root 1776: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1777: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1778: start_brace ();
1.1.1.7 root 1779: switch (curi->size) {
1780: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1781: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1.1.1.3 root 1782: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1.1.5 root 1783: default: abort ();
1.1 root 1784: }
1.1.1.3 root 1785: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1786: printf ("\tCLEAR_CZNV;\n");
1787: if (source_is_imm1_8 (curi))
1788: printf ("{");
1789: else
1790: printf ("\tif (cnt > 0) {");
1791: printf ("\tuae_u32 hival;\n");
1792: printf ("\tcnt &= %d;\n", bit_size (curi->size) - 1);
1793: printf ("\thival = val << (%d - cnt);\n", bit_size (curi->size));
1794: printf ("\tval >>= cnt;\n");
1795: printf ("\tval |= hival;\n");
1796: printf ("\tval &= %s;\n", bit_mask (curi->size));
1797: printf ("\tSET_CFLG ((val & %s) >> %d);\n", cmask (curi->size), bit_size (curi->size) - 1);
1.1.1.3 root 1798: printf ("\t}\n");
1.1.1.7 root 1799: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1800: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1801: break;
1.1.1.3 root 1802: case i_ROXL:
1.1.1.7 root 1803: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1804: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1805: start_brace ();
1.1.1.7 root 1806: switch (curi->size) {
1807: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1808: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1.1.1.3 root 1809: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1.1.5 root 1810: default: abort ();
1.1 root 1811: }
1.1.1.3 root 1812: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1813: printf ("\tCLEAR_CZNV;\n");
1814: if (! source_is_imm1_8 (curi))
1815: force_range_for_rox ("cnt", curi->size);
1816: if (source_is_imm1_8 (curi))
1817: printf ("{");
1818: else
1819: printf ("\tif (cnt > 0) {\n");
1820: printf ("\tcnt--;\n");
1821: printf ("\t{\n\tuae_u32 carry;\n");
1822: printf ("\tuae_u32 loval = val >> (%d - cnt);\n", bit_size (curi->size) - 1);
1823: printf ("\tcarry = loval & 1;\n");
1824: printf ("\tval = (((val << 1) | GET_XFLG) << cnt) | (loval >> 1);\n");
1825: printf ("\tSET_XFLG (carry);\n");
1826: printf ("\tval &= %s;\n", bit_mask (curi->size));
1827: printf ("\t} }\n");
1828: printf ("\tSET_CFLG (GET_XFLG);\n");
1829: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1830: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1831: break;
1832: case i_ROXR:
1.1.1.7 root 1833: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1834: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1835: start_brace ();
1.1.1.7 root 1836: switch (curi->size) {
1837: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1838: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1.1.1.3 root 1839: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1.1.5 root 1840: default: abort ();
1.1 root 1841: }
1.1.1.3 root 1842: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1843: printf ("\tCLEAR_CZNV;\n");
1844: if (! source_is_imm1_8 (curi))
1845: force_range_for_rox ("cnt", curi->size);
1846: if (source_is_imm1_8 (curi))
1847: printf ("{");
1848: else
1849: printf ("\tif (cnt > 0) {\n");
1850: printf ("\tcnt--;\n");
1851: printf ("\t{\n\tuae_u32 carry;\n");
1852: printf ("\tuae_u32 hival = (val << 1) | GET_XFLG;\n");
1853: printf ("\thival <<= (%d - cnt);\n", bit_size (curi->size) - 1);
1854: printf ("\tval >>= cnt;\n");
1855: printf ("\tcarry = val & 1;\n");
1856: printf ("\tval >>= 1;\n");
1857: printf ("\tval |= hival;\n");
1858: printf ("\tSET_XFLG (carry);\n");
1859: printf ("\tval &= %s;\n", bit_mask (curi->size));
1860: printf ("\t} }\n");
1861: printf ("\tSET_CFLG (GET_XFLG);\n");
1862: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1863: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1864: break;
1865: case i_ASRW:
1.1.1.7 root 1866: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1867: start_brace ();
1.1.1.7 root 1868: switch (curi->size) {
1869: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1870: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1.1.1.3 root 1871: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1.1.5 root 1872: default: abort ();
1.1 root 1873: }
1.1.1.7 root 1874: printf ("\tuae_u32 sign = %s & val;\n", cmask (curi->size));
1875: printf ("\tuae_u32 cflg = val & 1;\n");
1876: printf ("\tval = (val >> 1) | sign;\n");
1877: genflags (flag_logical, curi->size, "val", "", "");
1878: printf ("\tSET_CFLG (cflg);\n");
1879: duplicate_carry ();
1880: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1881: break;
1882: case i_ASLW:
1.1.1.7 root 1883: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1884: start_brace ();
1.1.1.7 root 1885: switch (curi->size) {
1886: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1887: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1.1.1.3 root 1888: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1.1.5 root 1889: default: abort ();
1.1 root 1890: }
1.1.1.7 root 1891: printf ("\tuae_u32 sign = %s & val;\n", cmask (curi->size));
1892: printf ("\tuae_u32 sign2;\n");
1893: printf ("\tval <<= 1;\n");
1894: genflags (flag_logical, curi->size, "val", "", "");
1895: printf ("\tsign2 = %s & val;\n", cmask (curi->size));
1896: printf ("\tSET_CFLG (sign != 0);\n");
1897: duplicate_carry ();
1898:
1899: printf ("\tSET_VFLG (GET_VFLG | (sign2 != sign));\n");
1900: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1901: break;
1902: case i_LSRW:
1.1.1.7 root 1903: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1904: start_brace ();
1.1.1.7 root 1905: switch (curi->size) {
1906: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1907: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1.1.1.3 root 1908: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1.1.5 root 1909: default: abort ();
1.1 root 1910: }
1.1.1.7 root 1911: printf ("\tuae_u32 carry = val & 1;\n");
1.1.1.3 root 1912: printf ("\tval >>= 1;\n");
1.1.1.7 root 1913: genflags (flag_logical, curi->size, "val", "", "");
1914: printf ("SET_CFLG (carry);\n");
1915: duplicate_carry ();
1916: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1917: break;
1918: case i_LSLW:
1.1.1.7 root 1919: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1920: start_brace ();
1.1.1.7 root 1921: switch (curi->size) {
1.1.1.3 root 1922: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1923: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1924: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1.1.5 root 1925: default: abort ();
1.1 root 1926: }
1.1.1.7 root 1927: printf ("\tuae_u32 carry = val & %s;\n", cmask (curi->size));
1.1.1.3 root 1928: printf ("\tval <<= 1;\n");
1.1.1.7 root 1929: genflags (flag_logical, curi->size, "val", "", "");
1930: printf ("SET_CFLG (carry >> %d);\n", bit_size (curi->size) - 1);
1931: duplicate_carry ();
1932: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1933: break;
1934: case i_ROLW:
1.1.1.7 root 1935: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1936: start_brace ();
1.1.1.7 root 1937: switch (curi->size) {
1.1.1.3 root 1938: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1939: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1940: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1.1.5 root 1941: default: abort ();
1.1 root 1942: }
1.1.1.7 root 1943: printf ("\tuae_u32 carry = val & %s;\n", cmask (curi->size));
1.1.1.3 root 1944: printf ("\tval <<= 1;\n");
1.1.1.7 root 1945: printf ("\tif (carry) val |= 1;\n");
1946: genflags (flag_logical, curi->size, "val", "", "");
1947: printf ("SET_CFLG (carry >> %d);\n", bit_size (curi->size) - 1);
1948: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1949: break;
1950: case i_RORW:
1.1.1.7 root 1951: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1952: start_brace ();
1.1.1.7 root 1953: switch (curi->size) {
1.1.1.3 root 1954: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1955: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1956: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1.1.5 root 1957: default: abort ();
1.1 root 1958: }
1.1.1.7 root 1959: printf ("\tuae_u32 carry = val & 1;\n");
1.1.1.3 root 1960: printf ("\tval >>= 1;\n");
1.1.1.7 root 1961: printf ("\tif (carry) val |= %s;\n", cmask (curi->size));
1962: genflags (flag_logical, curi->size, "val", "", "");
1963: printf ("SET_CFLG (carry);\n");
1964: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1965: break;
1966: case i_ROXLW:
1.1.1.7 root 1967: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1968: start_brace ();
1.1.1.7 root 1969: switch (curi->size) {
1.1.1.3 root 1970: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1971: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1972: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1.1.5 root 1973: default: abort ();
1.1 root 1974: }
1.1.1.7 root 1975: printf ("\tuae_u32 carry = val & %s;\n", cmask (curi->size));
1.1.1.3 root 1976: printf ("\tval <<= 1;\n");
1.1.1.7 root 1977: printf ("\tif (GET_XFLG) val |= 1;\n");
1978: genflags (flag_logical, curi->size, "val", "", "");
1979: printf ("SET_CFLG (carry >> %d);\n", bit_size (curi->size) - 1);
1980: duplicate_carry ();
1981: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1982: break;
1983: case i_ROXRW:
1.1.1.7 root 1984: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1985: start_brace ();
1.1.1.7 root 1986: switch (curi->size) {
1.1.1.3 root 1987: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1988: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1989: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1.1.1.5 root 1990: default: abort ();
1.1 root 1991: }
1.1.1.7 root 1992: printf ("\tuae_u32 carry = val & 1;\n");
1.1.1.3 root 1993: printf ("\tval >>= 1;\n");
1.1.1.7 root 1994: printf ("\tif (GET_XFLG) val |= %s;\n", cmask (curi->size));
1995: genflags (flag_logical, curi->size, "val", "", "");
1996: printf ("SET_CFLG (carry);\n");
1997: duplicate_carry ();
1998: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1999: break;
2000: case i_MOVEC2:
1.1.1.7 root 2001: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.5 root 2002: start_brace ();
1.1.1.3 root 2003: printf ("\tint regno = (src >> 12) & 15;\n");
2004: printf ("\tuae_u32 *regp = regs.regs + regno;\n");
1.1.1.9 ! root 2005: printf ("\tif (! m68k_movec2(src & 0xFFF, regp)) goto %s;\n", endlabelstr);
1.1 root 2006: break;
2007: case i_MOVE2C:
1.1.1.7 root 2008: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.5 root 2009: start_brace ();
1.1.1.3 root 2010: printf ("\tint regno = (src >> 12) & 15;\n");
2011: printf ("\tuae_u32 *regp = regs.regs + regno;\n");
1.1.1.9 ! root 2012: printf ("\tif (! m68k_move2c(src & 0xFFF, regp)) goto %s;\n", endlabelstr);
1.1 root 2013: break;
2014: case i_CAS:
2015: {
2016: int old_brace_level;
1.1.1.7 root 2017: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
2018: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1.1.5 root 2019: start_brace ();
1.1.1.3 root 2020: printf ("\tint ru = (src >> 6) & 7;\n");
2021: printf ("\tint rc = src & 7;\n");
1.1.1.7 root 2022: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, rc)", "dst");
2023: printf ("\tif (GET_ZFLG)");
1.1 root 2024: old_brace_level = n_braces;
2025: start_brace ();
1.1.1.7 root 2026: genastore ("(m68k_dreg(regs, ru))", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 2027: pop_braces (old_brace_level);
1.1.1.3 root 2028: printf ("else");
1.1 root 2029: start_brace ();
1.1.1.3 root 2030: printf ("m68k_dreg(regs, rc) = dst;\n");
1.1 root 2031: pop_braces (old_brace_level);
2032: }
2033: break;
2034: case i_CAS2:
1.1.1.7 root 2035: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.8 root 2036: printf ("\tuae_u32 rn1 = regs.regs[(extra >> 28) & 15];\n");
2037: printf ("\tuae_u32 rn2 = regs.regs[(extra >> 12) & 15];\n");
1.1.1.7 root 2038: if (curi->size == sz_word) {
1.1.1.5 root 2039: int old_brace_level = n_braces;
2040: printf ("\tuae_u16 dst1 = get_word(rn1), dst2 = get_word(rn2);\n");
1.1.1.7 root 2041: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, (extra >> 16) & 7)", "dst1");
2042: printf ("\tif (GET_ZFLG) {\n");
2043: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, extra & 7)", "dst2");
2044: printf ("\tif (GET_ZFLG) {\n");
1.1.1.5 root 2045: printf ("\tput_word(rn1, m68k_dreg(regs, (extra >> 22) & 7));\n");
2046: printf ("\tput_word(rn1, m68k_dreg(regs, (extra >> 6) & 7));\n");
2047: printf ("\t}}\n");
2048: pop_braces (old_brace_level);
1.1.1.7 root 2049: printf ("\tif (! GET_ZFLG) {\n");
1.1.1.5 root 2050: printf ("\tm68k_dreg(regs, (extra >> 22) & 7) = (m68k_dreg(regs, (extra >> 22) & 7) & ~0xffff) | (dst1 & 0xffff);\n");
2051: printf ("\tm68k_dreg(regs, (extra >> 6) & 7) = (m68k_dreg(regs, (extra >> 6) & 7) & ~0xffff) | (dst2 & 0xffff);\n");
2052: printf ("\t}\n");
1.1 root 2053: } else {
1.1.1.5 root 2054: int old_brace_level = n_braces;
2055: printf ("\tuae_u32 dst1 = get_long(rn1), dst2 = get_long(rn2);\n");
1.1.1.7 root 2056: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, (extra >> 16) & 7)", "dst1");
2057: printf ("\tif (GET_ZFLG) {\n");
2058: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, extra & 7)", "dst2");
2059: printf ("\tif (GET_ZFLG) {\n");
1.1.1.5 root 2060: printf ("\tput_long(rn1, m68k_dreg(regs, (extra >> 22) & 7));\n");
2061: printf ("\tput_long(rn1, m68k_dreg(regs, (extra >> 6) & 7));\n");
2062: printf ("\t}}\n");
2063: pop_braces (old_brace_level);
1.1.1.7 root 2064: printf ("\tif (! GET_ZFLG) {\n");
1.1.1.5 root 2065: printf ("\tm68k_dreg(regs, (extra >> 22) & 7) = dst1;\n");
2066: printf ("\tm68k_dreg(regs, (extra >> 6) & 7) = dst2;\n");
2067: printf ("\t}\n");
1.1 root 2068: }
2069: break;
1.1.1.5 root 2070: case i_MOVES: /* ignore DFC and SFC because we have no MMU */
1.1 root 2071: {
2072: int old_brace_level;
1.1.1.7 root 2073: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.3 root 2074: printf ("\tif (extra & 0x800)\n");
1.1 root 2075: old_brace_level = n_braces;
2076: start_brace ();
1.1.1.3 root 2077: printf ("\tuae_u32 src = regs.regs[(extra >> 12) & 15];\n");
1.1.1.7 root 2078: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
2079: genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 2080: pop_braces (old_brace_level);
1.1.1.3 root 2081: printf ("else");
1.1 root 2082: start_brace ();
1.1.1.7 root 2083: genamode (curi->dmode, "dstreg", curi->size, "src", 1, 0);
1.1.1.3 root 2084: printf ("\tif (extra & 0x8000) {\n");
1.1.1.7 root 2085: switch (curi->size) {
1.1.1.3 root 2086: case sz_byte: printf ("\tm68k_areg(regs, (extra >> 12) & 7) = (uae_s32)(uae_s8)src;\n"); break;
2087: case sz_word: printf ("\tm68k_areg(regs, (extra >> 12) & 7) = (uae_s32)(uae_s16)src;\n"); break;
2088: case sz_long: printf ("\tm68k_areg(regs, (extra >> 12) & 7) = src;\n"); break;
1.1.1.5 root 2089: default: abort ();
1.1 root 2090: }
1.1.1.3 root 2091: printf ("\t} else {\n");
1.1.1.7 root 2092: genastore ("src", Dreg, "(extra >> 12) & 7", curi->size, "");
1.1.1.3 root 2093: printf ("\t}\n");
1.1 root 2094: pop_braces (old_brace_level);
2095: }
2096: break;
1.1.1.5 root 2097: case i_BKPT: /* only needed for hardware emulators */
2098: sync_m68k_pc ();
1.1.1.3 root 2099: printf ("\top_illg(opcode);\n");
1.1 root 2100: break;
1.1.1.5 root 2101: case i_CALLM: /* not present in 68030 */
2102: sync_m68k_pc ();
1.1.1.3 root 2103: printf ("\top_illg(opcode);\n");
1.1 root 2104: break;
1.1.1.5 root 2105: case i_RTM: /* not present in 68030 */
2106: sync_m68k_pc ();
1.1.1.3 root 2107: printf ("\top_illg(opcode);\n");
1.1 root 2108: break;
2109: case i_TRAPcc:
1.1.1.7 root 2110: if (curi->smode != am_unknown && curi->smode != am_illg)
2111: genamode (curi->smode, "srcreg", curi->size, "dummy", 1, 0);
2112: printf ("\tif (cctrue(%d)) { Exception(7,m68k_getpc()); goto %s; }\n", curi->cc, endlabelstr);
1.1.1.5 root 2113: need_endlabel = 1;
1.1 root 2114: break;
2115: case i_DIVL:
1.1.1.3 root 2116: sync_m68k_pc ();
2117: start_brace ();
2118: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 2119: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
2120: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1.1.5 root 2121: sync_m68k_pc ();
1.1.1.3 root 2122: printf ("\tm68k_divl(opcode, dst, extra, oldpc);\n");
1.1 root 2123: break;
2124: case i_MULL:
1.1.1.7 root 2125: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
2126: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1.1.5 root 2127: sync_m68k_pc ();
1.1.1.3 root 2128: printf ("\tm68k_mull(opcode, dst, extra);\n");
1.1 root 2129: break;
2130: case i_BFTST:
2131: case i_BFEXTU:
2132: case i_BFCHG:
2133: case i_BFEXTS:
2134: case i_BFCLR:
2135: case i_BFFFO:
2136: case i_BFSET:
2137: case i_BFINS:
1.1.1.7 root 2138: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
2139: genamode (curi->dmode, "dstreg", sz_long, "dst", 2, 0);
1.1.1.5 root 2140: start_brace ();
1.1.1.3 root 2141: printf ("\tuae_s32 offset = extra & 0x800 ? m68k_dreg(regs, (extra >> 6) & 7) : (extra >> 6) & 0x1f;\n");
2142: printf ("\tint width = (((extra & 0x20 ? m68k_dreg(regs, extra & 7) : extra) -1) & 0x1f) +1;\n");
1.1.1.7 root 2143: if (curi->dmode == Dreg) {
1.1.1.3 root 2144: printf ("\tuae_u32 tmp = m68k_dreg(regs, dstreg) << (offset & 0x1f);\n");
2145: } else {
2146: printf ("\tuae_u32 tmp,bf0,bf1;\n");
2147: printf ("\tdsta += (offset >> 3) | (offset & 0x80000000 ? ~0x1fffffff : 0);\n");
2148: printf ("\tbf0 = get_long(dsta);bf1 = get_byte(dsta+4) & 0xff;\n");
2149: printf ("\ttmp = (bf0 << (offset & 7)) | (bf1 >> (8 - (offset & 7)));\n");
2150: }
2151: printf ("\ttmp >>= (32 - width);\n");
1.1.1.7 root 2152: printf ("\tSET_NFLG (tmp & (1 << (width-1)) ? 1 : 0);\n");
2153: printf ("\tSET_ZFLG (tmp == 0); SET_VFLG (0); SET_CFLG (0);\n");
2154: switch (curi->mnemo) {
1.1.1.3 root 2155: case i_BFTST:
2156: break;
2157: case i_BFEXTU:
2158: printf ("\tm68k_dreg(regs, (extra >> 12) & 7) = tmp;\n");
2159: break;
2160: case i_BFCHG:
2161: printf ("\ttmp = ~tmp;\n");
2162: break;
2163: case i_BFEXTS:
1.1.1.7 root 2164: printf ("\tif (GET_NFLG) tmp |= width == 32 ? 0 : (-1 << width);\n");
1.1.1.3 root 2165: printf ("\tm68k_dreg(regs, (extra >> 12) & 7) = tmp;\n");
2166: break;
2167: case i_BFCLR:
2168: printf ("\ttmp = 0;\n");
2169: break;
2170: case i_BFFFO:
2171: printf ("\t{ uae_u32 mask = 1 << (width-1);\n");
2172: printf ("\twhile (mask) { if (tmp & mask) break; mask >>= 1; offset++; }}\n");
2173: printf ("\tm68k_dreg(regs, (extra >> 12) & 7) = offset;\n");
2174: break;
2175: case i_BFSET:
2176: printf ("\ttmp = 0xffffffff;\n");
2177: break;
2178: case i_BFINS:
2179: printf ("\ttmp = m68k_dreg(regs, (extra >> 12) & 7);\n");
2180: break;
2181: default:
2182: break;
1.1 root 2183: }
1.1.1.7 root 2184: if (curi->mnemo == i_BFCHG
2185: || curi->mnemo == i_BFCLR
2186: || curi->mnemo == i_BFSET
2187: || curi->mnemo == i_BFINS)
1.1.1.5 root 2188: {
2189: printf ("\ttmp <<= (32 - width);\n");
1.1.1.7 root 2190: if (curi->dmode == Dreg) {
1.1.1.5 root 2191: printf ("\tm68k_dreg(regs, dstreg) = (m68k_dreg(regs, dstreg) & ((offset & 0x1f) == 0 ? 0 :\n");
2192: printf ("\t\t(0xffffffff << (32 - (offset & 0x1f))))) |\n");
2193: printf ("\t\t(tmp >> (offset & 0x1f)) |\n");
2194: printf ("\t\t(((offset & 0x1f) + width) >= 32 ? 0 :\n");
2195: printf (" (m68k_dreg(regs, dstreg) & ((uae_u32)0xffffffff >> ((offset & 0x1f) + width))));\n");
2196: } else {
2197: printf ("\tbf0 = (bf0 & (0xff000000 << (8 - (offset & 7)))) |\n");
2198: printf ("\t\t(tmp >> (offset & 7)) |\n");
2199: printf ("\t\t(((offset & 7) + width) >= 32 ? 0 :\n");
2200: printf ("\t\t (bf0 & ((uae_u32)0xffffffff >> ((offset & 7) + width))));\n");
2201: printf ("\tput_long(dsta,bf0 );\n");
2202: printf ("\tif (((offset & 7) + width) > 32) {\n");
2203: printf ("\t\tbf1 = (bf1 & (0xff >> (width - 32 + (offset & 7)))) |\n");
2204: printf ("\t\t\t(tmp << (8 - (offset & 7)));\n");
2205: printf ("\t\tput_byte(dsta+4,bf1);\n");
2206: printf ("\t}\n");
2207: }
1.1 root 2208: }
2209: break;
2210: case i_PACK:
1.1.1.7 root 2211: if (curi->smode == Dreg) {
1.1.1.5 root 2212: printf ("\tuae_u16 val = m68k_dreg(regs, srcreg) + %s;\n", gen_nextiword ());
1.1.1.3 root 2213: printf ("\tm68k_dreg(regs, dstreg) = (m68k_dreg(regs, dstreg) & 0xffffff00) | ((val >> 4) & 0xf0) | (val & 0xf);\n");
2214: } else {
2215: printf ("\tuae_u16 val;\n");
2216: printf ("\tm68k_areg(regs, srcreg) -= areg_byteinc[srcreg];\n");
2217: printf ("\tval = (uae_u16)get_byte(m68k_areg(regs, srcreg));\n");
2218: printf ("\tm68k_areg(regs, srcreg) -= areg_byteinc[srcreg];\n");
1.1.1.5 root 2219: printf ("\tval = (val | ((uae_u16)get_byte(m68k_areg(regs, srcreg)) << 8)) + %s;\n", gen_nextiword ());
1.1.1.3 root 2220: printf ("\tm68k_areg(regs, dstreg) -= areg_byteinc[dstreg];\n");
2221: printf ("\tput_byte(m68k_areg(regs, dstreg),((val >> 4) & 0xf0) | (val & 0xf));\n");
1.1 root 2222: }
2223: break;
2224: case i_UNPK:
1.1.1.7 root 2225: if (curi->smode == Dreg) {
1.1.1.3 root 2226: printf ("\tuae_u16 val = m68k_dreg(regs, srcreg);\n");
1.1.1.5 root 2227: printf ("\tval = (((val << 4) & 0xf00) | (val & 0xf)) + %s;\n", gen_nextiword ());
1.1.1.3 root 2228: printf ("\tm68k_dreg(regs, dstreg) = (m68k_dreg(regs, dstreg) & 0xffff0000) | (val & 0xffff);\n");
2229: } else {
2230: printf ("\tuae_u16 val;\n");
2231: printf ("\tm68k_areg(regs, srcreg) -= areg_byteinc[srcreg];\n");
2232: printf ("\tval = (uae_u16)get_byte(m68k_areg(regs, srcreg));\n");
1.1.1.5 root 2233: printf ("\tval = (((val << 4) & 0xf00) | (val & 0xf)) + %s;\n", gen_nextiword ());
1.1.1.3 root 2234: printf ("\tm68k_areg(regs, dstreg) -= areg_byteinc[dstreg];\n");
2235: printf ("\tput_byte(m68k_areg(regs, dstreg),val);\n");
2236: printf ("\tm68k_areg(regs, dstreg) -= areg_byteinc[dstreg];\n");
2237: printf ("\tput_byte(m68k_areg(regs, dstreg),val >> 8);\n");
1.1 root 2238: }
2239: break;
2240: case i_TAS:
1.1.1.7 root 2241: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
2242: genflags (flag_logical, curi->size, "src", "", "");
1.1.1.3 root 2243: printf ("\tsrc |= 0x80;\n");
1.1.1.7 root 2244: genastore ("src", curi->smode, "srcreg", curi->size, "src");
1.1 root 2245: break;
2246: case i_FPP:
1.1.1.7 root 2247: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.5 root 2248: sync_m68k_pc ();
1.1.1.3 root 2249: printf ("\tfpp_opp(opcode,extra);\n");
1.1 root 2250: break;
2251: case i_FDBcc:
1.1.1.7 root 2252: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.5 root 2253: sync_m68k_pc ();
1.1.1.3 root 2254: printf ("\tfdbcc_opp(opcode,extra);\n");
1.1 root 2255: break;
2256: case i_FScc:
1.1.1.7 root 2257: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.5 root 2258: sync_m68k_pc ();
1.1.1.3 root 2259: printf ("\tfscc_opp(opcode,extra);\n");
1.1 root 2260: break;
2261: case i_FTRAPcc:
1.1.1.5 root 2262: sync_m68k_pc ();
2263: start_brace ();
1.1.1.3 root 2264: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 2265: if (curi->smode != am_unknown && curi->smode != am_illg)
2266: genamode (curi->smode, "srcreg", curi->size, "dummy", 1, 0);
1.1.1.5 root 2267: sync_m68k_pc ();
1.1.1.3 root 2268: printf ("\tftrapcc_opp(opcode,oldpc);\n");
1.1 root 2269: break;
2270: case i_FBcc:
1.1.1.5 root 2271: sync_m68k_pc ();
2272: start_brace ();
1.1.1.3 root 2273: printf ("\tuaecptr pc = m68k_getpc();\n");
1.1.1.7 root 2274: genamode (curi->dmode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.5 root 2275: sync_m68k_pc ();
1.1.1.3 root 2276: printf ("\tfbcc_opp(opcode,pc,extra);\n");
1.1 root 2277: break;
2278: case i_FSAVE:
1.1.1.5 root 2279: sync_m68k_pc ();
1.1.1.3 root 2280: printf ("\tfsave_opp(opcode);\n");
1.1 root 2281: break;
2282: case i_FRESTORE:
1.1.1.5 root 2283: sync_m68k_pc ();
1.1.1.3 root 2284: printf ("\tfrestore_opp(opcode);\n");
1.1 root 2285: break;
2286: case i_MMUOP:
1.1.1.7 root 2287: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.5 root 2288: sync_m68k_pc ();
1.1.1.3 root 2289: printf ("\tmmu_op(opcode,extra);\n");
1.1 root 2290: break;
2291: default:
1.1.1.5 root 2292: abort ();
1.1 root 2293: break;
1.1.1.5 root 2294: }
1.1 root 2295: finish_braces ();
1.1.1.3 root 2296: sync_m68k_pc ();
1.1 root 2297: }
2298:
1.1.1.5 root 2299: static void generate_includes (FILE * f)
1.1.1.3 root 2300: {
2301: fprintf (f, "#include \"sysconfig.h\"\n");
2302: fprintf (f, "#include \"sysdeps.h\"\n");
2303: fprintf (f, "#include \"config.h\"\n");
2304: fprintf (f, "#include \"options.h\"\n");
2305: fprintf (f, "#include \"memory.h\"\n");
2306: fprintf (f, "#include \"custom.h\"\n");
2307: fprintf (f, "#include \"readcpu.h\"\n");
2308: fprintf (f, "#include \"newcpu.h\"\n");
2309: fprintf (f, "#include \"compiler.h\"\n");
2310: fprintf (f, "#include \"cputbl.h\"\n");
2311: }
2312:
2313: static int postfix;
2314:
2315: static void generate_one_opcode (int rp)
1.1 root 2316: {
2317: int i;
1.1.1.3 root 2318: uae_u16 smsk, dmsk;
2319: long int opcode = opcode_map[rp];
1.1 root 2320:
1.1.1.3 root 2321: if (table68k[opcode].mnemo == i_ILLG
2322: || table68k[opcode].clev > cpu_level)
2323: return;
1.1 root 2324:
1.1.1.5 root 2325: for (i = 0; lookuptab[i].name[0]; i++) {
1.1.1.3 root 2326: if (table68k[opcode].mnemo == lookuptab[i].mnemo)
2327: break;
2328: }
1.1 root 2329:
1.1.1.3 root 2330: if (table68k[opcode].handler != -1)
2331: return;
1.1 root 2332:
1.1.1.3 root 2333: if (opcode_next_clev[rp] != cpu_level) {
2334: fprintf (stblfile, "{ op_%lx_%d, 0, %ld }, /* %s */\n", opcode, opcode_last_postfix[rp],
2335: opcode, lookuptab[i].name);
2336: return;
2337: }
2338: fprintf (stblfile, "{ op_%lx_%d, 0, %ld }, /* %s */\n", opcode, postfix, opcode, lookuptab[i].name);
2339: fprintf (headerfile, "extern cpuop_func op_%lx_%d;\n", opcode, postfix);
1.1.1.5 root 2340: printf ("unsigned long REGPARAM2 op_%lx_%d(uae_u32 opcode) /* %s */\n{\n", opcode, postfix, lookuptab[i].name);
1.1.1.3 root 2341:
2342: switch (table68k[opcode].stype) {
2343: case 0: smsk = 7; break;
2344: case 1: smsk = 255; break;
2345: case 2: smsk = 15; break;
2346: case 3: smsk = 7; break;
2347: case 4: smsk = 7; break;
2348: case 5: smsk = 63; break;
1.1.1.5 root 2349: default: abort ();
1.1.1.3 root 2350: }
2351: dmsk = 7;
2352:
2353: next_cpu_level = -1;
2354: if (table68k[opcode].suse
1.1.1.5 root 2355: && table68k[opcode].smode != imm && table68k[opcode].smode != imm0
1.1.1.3 root 2356: && table68k[opcode].smode != imm1 && table68k[opcode].smode != imm2
2357: && table68k[opcode].smode != absw && table68k[opcode].smode != absl
2358: && table68k[opcode].smode != PC8r && table68k[opcode].smode != PC16)
2359: {
2360: if (table68k[opcode].spos == -1) {
1.1.1.5 root 2361: if (((int) table68k[opcode].sreg) >= 128)
2362: printf ("\tuae_u32 srcreg = (uae_s32)(uae_s8)%d;\n", (int) table68k[opcode].sreg);
1.1.1.3 root 2363: else
1.1.1.5 root 2364: printf ("\tuae_u32 srcreg = %d;\n", (int) table68k[opcode].sreg);
1.1.1.3 root 2365: } else {
2366: char source[100];
1.1.1.6 root 2367: int pos = table68k[opcode].spos;
1.1.1.5 root 2368:
1.1.1.6 root 2369: #if 0
1.1.1.5 root 2370: /* Check that we can do the little endian optimization safely. */
1.1.1.6 root 2371: if (pos < 8 && (smsk >> (8 - pos)) != 0)
1.1.1.5 root 2372: abort ();
1.1.1.6 root 2373: #endif
2374: if (pos)
2375: sprintf (source, "((opcode >> %d) & %d)", pos, smsk);
1.1.1.3 root 2376: else
1.1.1.5 root 2377: sprintf (source, "(opcode & %d)", smsk);
2378:
1.1.1.3 root 2379: if (table68k[opcode].stype == 3)
2380: printf ("\tuae_u32 srcreg = imm8_table[%s];\n", source);
2381: else if (table68k[opcode].stype == 1)
2382: printf ("\tuae_u32 srcreg = (uae_s32)(uae_s8)%s;\n", source);
2383: else
2384: printf ("\tuae_u32 srcreg = %s;\n", source);
1.1 root 2385: }
1.1.1.3 root 2386: }
2387: if (table68k[opcode].duse
2388: /* Yes, the dmode can be imm, in case of LINK or DBcc */
1.1.1.5 root 2389: && table68k[opcode].dmode != imm && table68k[opcode].dmode != imm0
1.1.1.3 root 2390: && table68k[opcode].dmode != imm1 && table68k[opcode].dmode != imm2
1.1.1.5 root 2391: && table68k[opcode].dmode != absw && table68k[opcode].dmode != absl)
2392: {
1.1.1.3 root 2393: if (table68k[opcode].dpos == -1) {
1.1.1.5 root 2394: if (((int) table68k[opcode].dreg) >= 128)
2395: printf ("\tuae_u32 dstreg = (uae_s32)(uae_s8)%d;\n", (int) table68k[opcode].dreg);
1.1.1.3 root 2396: else
1.1.1.5 root 2397: printf ("\tuae_u32 dstreg = %d;\n", (int) table68k[opcode].dreg);
1.1.1.3 root 2398: } else {
1.1.1.5 root 2399: int pos = table68k[opcode].dpos;
1.1.1.6 root 2400: #if 0
1.1.1.5 root 2401: /* Check that we can do the little endian optimization safely. */
1.1.1.6 root 2402: if (pos < 8 && (dmsk >> (8 - pos)) != 0)
1.1.1.5 root 2403: abort ();
1.1.1.6 root 2404: #endif
1.1.1.5 root 2405: if (pos)
1.1.1.3 root 2406: printf ("\tuae_u32 dstreg = (opcode >> %d) & %d;\n",
1.1.1.5 root 2407: pos, dmsk);
1.1.1.3 root 2408: else
2409: printf ("\tuae_u32 dstreg = opcode & %d;\n", dmsk);
1.1 root 2410: }
2411: }
1.1.1.5 root 2412: need_endlabel = 0;
1.1.1.3 root 2413: endlabelno++;
2414: sprintf (endlabelstr, "endlabel%d", endlabelno);
2415: gen_opcode (opcode);
1.1.1.5 root 2416: if (need_endlabel)
1.1.1.6 root 2417: printf ("%s: ;\n", endlabelstr);
1.1.1.5 root 2418: printf ("return %d;\n", insn_n_cycles);
1.1.1.3 root 2419: printf ("}\n");
2420: opcode_next_clev[rp] = next_cpu_level;
2421: opcode_last_postfix[rp] = postfix;
1.1 root 2422: }
2423:
1.1.1.3 root 2424: static void generate_func (void)
1.1 root 2425: {
1.1.1.5 root 2426: int i, j, rp;
1.1 root 2427:
1.1.1.3 root 2428: using_prefetch = 0;
2429: using_exception_3 = 0;
2430: for (i = 0; i < 5; i++) {
2431: cpu_level = 3 - i;
2432: if (i == 4) {
2433: cpu_level = 0;
2434: using_prefetch = 1;
2435: using_exception_3 = 1;
2436: for (rp = 0; rp < nr_cpuop_funcs; rp++)
2437: opcode_next_clev[rp] = 0;
2438: }
2439: postfix = i;
2440: fprintf (stblfile, "struct cputbl op_smalltbl_%d[] = {\n", postfix);
2441:
1.1.1.5 root 2442: /* sam: this is for people with low memory (eg. me :)) */
2443: printf ("\n"
2444: "#if !defined(PART_1) && !defined(PART_2) && "
2445: "!defined(PART_3) && !defined(PART_4) && "
2446: "!defined(PART_5) && !defined(PART_6) && "
2447: "!defined(PART_7) && !defined(PART_8)"
2448: "\n"
2449: "#define PART_1 1\n"
2450: "#define PART_2 1\n"
2451: "#define PART_3 1\n"
2452: "#define PART_4 1\n"
2453: "#define PART_5 1\n"
2454: "#define PART_6 1\n"
2455: "#define PART_7 1\n"
2456: "#define PART_8 1\n"
2457: "#endif\n\n");
2458:
2459: rp = 0;
2460: for(j=1;j<=8;++j) {
2461: int k = (j*nr_cpuop_funcs)/8;
2462: printf ("#ifdef PART_%d\n",j);
2463: for (; rp < k; rp++)
2464: generate_one_opcode (rp);
2465: printf ("#endif\n\n");
2466: }
2467:
1.1.1.3 root 2468: fprintf (stblfile, "{ 0, 0, 0 }};\n");
1.1 root 2469: }
2470:
2471: }
2472:
1.1.1.3 root 2473: int main (int argc, char **argv)
1.1.1.5 root 2474: {
1.1 root 2475: read_table68k ();
2476: do_merges ();
1.1.1.3 root 2477:
1.1.1.5 root 2478: opcode_map = (int *) xmalloc (sizeof (int) * nr_cpuop_funcs);
2479: opcode_last_postfix = (int *) xmalloc (sizeof (int) * nr_cpuop_funcs);
2480: opcode_next_clev = (int *) xmalloc (sizeof (int) * nr_cpuop_funcs);
2481: counts = (unsigned long *) xmalloc (65536 * sizeof (unsigned long));
2482: read_counts ();
1.1.1.3 root 2483:
2484: /* It would be a lot nicer to put all in one file (we'd also get rid of
2485: * cputbl.h that way), but cpuopti can't cope. That could be fixed, but
2486: * I don't dare to touch the 68k version. */
1.1.1.5 root 2487:
1.1.1.3 root 2488: headerfile = fopen ("cputbl.h", "wb");
2489: stblfile = fopen ("cpustbl.c", "wb");
2490: freopen ("cpuemu.c", "wb", stdout);
2491:
2492: generate_includes (stdout);
2493: generate_includes (stblfile);
2494:
2495: generate_func ();
2496:
2497: free (table68k);
1.1 root 2498: return 0;
2499: }
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