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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: *
1.1.1.11 root 16: * The source for the insn timings is Markt & Technik's Amiga Magazin 8/1992.
17: *
18: * Copyright 1995, 1996, 1997, 1998, 1999, 2000 Bernd Schmidt
1.1 root 19: */
20:
21: #include "sysconfig.h"
22: #include "sysdeps.h"
23: #include <ctype.h>
24:
25: #include "readcpu.h"
26:
27: #define BOOL_TYPE "int"
28:
1.1.1.3 root 29: static FILE *headerfile;
30: static FILE *stblfile;
31:
32: static int using_prefetch;
33: static int using_exception_3;
34: static int cpu_level;
35:
36: /* For the current opcode, the next lower level that will have different code.
37: * Initialized to -1 for each opcode. If it remains unchanged, indicates we
38: * are done with that opcode. */
39: static int next_cpu_level;
1.1 root 40:
1.1.1.3 root 41: static int *opcode_map;
42: static int *opcode_next_clev;
43: static int *opcode_last_postfix;
44: static unsigned long *counts;
45:
1.1.1.5 root 46: static void read_counts (void)
1.1 root 47: {
48: FILE *file;
1.1.1.5 root 49: unsigned long opcode, count, total;
1.1 root 50: char name[20];
1.1.1.5 root 51: int nr = 0;
1.1.1.3 root 52: memset (counts, 0, 65536 * sizeof *counts);
1.1 root 53:
1.1.1.3 root 54: file = fopen ("frequent.68k", "r");
55: if (file) {
56: fscanf (file, "Total: %lu\n", &total);
1.1.1.5 root 57: while (fscanf (file, "%lx: %lu %s\n", &opcode, &count, name) == 3) {
1.1.1.12 root 58: opcode_next_clev[nr] = 4;
1.1.1.3 root 59: opcode_last_postfix[nr] = -1;
60: opcode_map[nr++] = opcode;
61: counts[opcode] = count;
62: }
63: fclose (file);
64: }
65: if (nr == nr_cpuop_funcs)
66: return;
67: for (opcode = 0; opcode < 0x10000; opcode++) {
68: if (table68k[opcode].handler == -1 && table68k[opcode].mnemo != i_ILLG
69: && counts[opcode] == 0)
1.1 root 70: {
1.1.1.12 root 71: opcode_next_clev[nr] = 4;
1.1.1.3 root 72: opcode_last_postfix[nr] = -1;
73: opcode_map[nr++] = opcode;
74: counts[opcode] = count;
1.1 root 75: }
76: }
1.1.1.3 root 77: if (nr != nr_cpuop_funcs)
78: abort ();
1.1 root 79: }
80:
1.1.1.3 root 81: static char endlabelstr[80];
82: static int endlabelno = 0;
1.1.1.5 root 83: static int need_endlabel;
1.1 root 84:
85: static int n_braces = 0;
1.1.1.3 root 86: static int m68k_pc_offset = 0;
1.1.1.5 root 87: static int insn_n_cycles;
1.1 root 88:
1.1.1.5 root 89: static void start_brace (void)
1.1 root 90: {
91: n_braces++;
1.1.1.3 root 92: printf ("{");
1.1 root 93: }
94:
1.1.1.5 root 95: static void close_brace (void)
1.1 root 96: {
97: assert (n_braces > 0);
98: n_braces--;
1.1.1.3 root 99: printf ("}");
1.1 root 100: }
101:
1.1.1.5 root 102: static void finish_braces (void)
1.1 root 103: {
104: while (n_braces > 0)
1.1.1.5 root 105: close_brace ();
1.1 root 106: }
107:
1.1.1.5 root 108: static void pop_braces (int to)
1.1 root 109: {
110: while (n_braces > to)
1.1.1.5 root 111: close_brace ();
1.1 root 112: }
113:
1.1.1.5 root 114: static int bit_size (int size)
1.1 root 115: {
1.1.1.5 root 116: switch (size) {
117: case sz_byte: return 8;
118: case sz_word: return 16;
119: case sz_long: return 32;
120: default: abort ();
1.1 root 121: }
122: return 0;
123: }
124:
1.1.1.5 root 125: static const char *bit_mask (int size)
1.1 root 126: {
1.1.1.5 root 127: switch (size) {
1.1.1.3 root 128: case sz_byte: return "0xff";
129: case sz_word: return "0xffff";
130: case sz_long: return "0xffffffff";
1.1.1.5 root 131: default: abort ();
1.1 root 132: }
133: return 0;
134: }
135:
1.1.1.3 root 136: static const char *gen_nextilong (void)
137: {
138: static char buffer[80];
139: int r = m68k_pc_offset;
140: m68k_pc_offset += 4;
1.1.1.5 root 141:
1.1.1.11 root 142: insn_n_cycles += 8;
1.1.1.5 root 143:
144: if (using_prefetch)
145: sprintf (buffer, "get_ilong_prefetch(%d)", r);
146: else
147: sprintf (buffer, "get_ilong(%d)", r);
1.1.1.3 root 148: return buffer;
149: }
150:
151: static const char *gen_nextiword (void)
152: {
153: static char buffer[80];
154: int r = m68k_pc_offset;
155: m68k_pc_offset += 2;
1.1.1.5 root 156:
1.1.1.11 root 157: insn_n_cycles += 4;
1.1.1.5 root 158:
159: if (using_prefetch)
160: sprintf (buffer, "get_iword_prefetch(%d)", r);
161: else
162: sprintf (buffer, "get_iword(%d)", r);
1.1.1.3 root 163: return buffer;
164: }
165:
166: static const char *gen_nextibyte (void)
167: {
168: static char buffer[80];
169: int r = m68k_pc_offset;
170: m68k_pc_offset += 2;
1.1.1.5 root 171:
1.1.1.11 root 172: insn_n_cycles += 4;
1.1.1.5 root 173:
174: if (using_prefetch)
175: sprintf (buffer, "get_ibyte_prefetch(%d)", r);
176: else
177: sprintf (buffer, "get_ibyte(%d)", r);
1.1.1.3 root 178: return buffer;
179: }
180:
181: static void fill_prefetch_0 (void)
182: {
183: if (using_prefetch)
184: printf ("fill_prefetch_0 ();\n");
185: }
186:
187: static void fill_prefetch_2 (void)
188: {
189: if (using_prefetch)
190: printf ("fill_prefetch_2 ();\n");
191: }
192:
193: static void sync_m68k_pc (void)
194: {
195: if (m68k_pc_offset == 0)
196: return;
197: printf ("m68k_incpc(%d);\n", m68k_pc_offset);
198: switch (m68k_pc_offset) {
199: case 0:
1.1.1.5 root 200: /*fprintf (stderr, "refilling prefetch at 0\n"); */
1.1.1.3 root 201: break;
202: case 2:
1.1.1.5 root 203: fill_prefetch_2 ();
1.1.1.3 root 204: break;
205: default:
1.1.1.5 root 206: fill_prefetch_0 ();
1.1.1.3 root 207: break;
208: }
209: m68k_pc_offset = 0;
210: }
211:
212: /* getv == 1: fetch data; getv != 0: check for odd address. If movem != 0,
1.1.1.14 root 213: * the calling routine handles Apdi and Aipi modes.
214: * gb-- movem == 2 means the same thing but for a MOVE16 instruction */
1.1.1.3 root 215: static void genamode (amodes mode, char *reg, wordsizes size, char *name, int getv, int movem)
1.1 root 216: {
1.1.1.6 root 217: start_brace ();
1.1.1.5 root 218: switch (mode) {
1.1.1.11 root 219: case Dreg:
1.1 root 220: if (movem)
1.1.1.5 root 221: abort ();
1.1.1.3 root 222: if (getv == 1)
1.1.1.5 root 223: switch (size) {
1.1.1.11 root 224: case sz_byte:
1.1.1.8 root 225: #if defined(AMIGA) && !defined(WARPUP)
1.1.1.2 root 226: /* sam: I don't know why gcc.2.7.2.1 produces a code worse */
227: /* if it is not done like that: */
1.1.1.3 root 228: printf ("\tuae_s8 %s = ((uae_u8*)&m68k_dreg(regs, %s))[3];\n", name, reg);
1.1.1.2 root 229: #else
1.1.1.3 root 230: printf ("\tuae_s8 %s = m68k_dreg(regs, %s);\n", name, reg);
1.1.1.2 root 231: #endif
1.1 root 232: break;
1.1.1.11 root 233: case sz_word:
1.1.1.8 root 234: #if defined(AMIGA) && !defined(WARPUP)
1.1.1.3 root 235: printf ("\tuae_s16 %s = ((uae_s16*)&m68k_dreg(regs, %s))[1];\n", name, reg);
1.1.1.2 root 236: #else
1.1.1.3 root 237: printf ("\tuae_s16 %s = m68k_dreg(regs, %s);\n", name, reg);
1.1.1.2 root 238: #endif
1.1 root 239: break;
1.1.1.11 root 240: case sz_long:
1.1.1.3 root 241: printf ("\tuae_s32 %s = m68k_dreg(regs, %s);\n", name, reg);
1.1 root 242: break;
1.1.1.11 root 243: default:
1.1.1.5 root 244: abort ();
1.1 root 245: }
1.1.1.3 root 246: return;
1.1.1.11 root 247: case Areg:
1.1 root 248: if (movem)
1.1.1.5 root 249: abort ();
1.1.1.3 root 250: if (getv == 1)
1.1.1.5 root 251: switch (size) {
1.1.1.11 root 252: case sz_word:
1.1.1.3 root 253: printf ("\tuae_s16 %s = m68k_areg(regs, %s);\n", name, reg);
1.1 root 254: break;
1.1.1.11 root 255: case sz_long:
1.1.1.3 root 256: printf ("\tuae_s32 %s = m68k_areg(regs, %s);\n", name, reg);
1.1 root 257: break;
1.1.1.11 root 258: default:
1.1.1.5 root 259: abort ();
1.1 root 260: }
1.1.1.3 root 261: return;
1.1.1.11 root 262: case Aind:
1.1.1.3 root 263: printf ("\tuaecptr %sa = m68k_areg(regs, %s);\n", name, reg);
1.1 root 264: break;
1.1.1.11 root 265: case Aipi:
1.1.1.3 root 266: printf ("\tuaecptr %sa = m68k_areg(regs, %s);\n", name, reg);
1.1 root 267: break;
1.1.1.11 root 268: case Apdi:
269: insn_n_cycles += 2;
1.1.1.5 root 270: switch (size) {
1.1.1.11 root 271: case sz_byte:
1.1.1.3 root 272: if (movem)
273: printf ("\tuaecptr %sa = m68k_areg(regs, %s);\n", name, reg);
274: else
275: printf ("\tuaecptr %sa = m68k_areg(regs, %s) - areg_byteinc[%s];\n", name, reg, reg);
1.1 root 276: break;
1.1.1.11 root 277: case sz_word:
1.1.1.3 root 278: printf ("\tuaecptr %sa = m68k_areg(regs, %s) - %d;\n", name, reg, movem ? 0 : 2);
1.1 root 279: break;
1.1.1.11 root 280: case sz_long:
1.1.1.3 root 281: printf ("\tuaecptr %sa = m68k_areg(regs, %s) - %d;\n", name, reg, movem ? 0 : 4);
1.1 root 282: break;
1.1.1.11 root 283: default:
1.1.1.5 root 284: abort ();
1.1 root 285: }
286: break;
1.1.1.11 root 287: case Ad16:
1.1.1.5 root 288: printf ("\tuaecptr %sa = m68k_areg(regs, %s) + (uae_s32)(uae_s16)%s;\n", name, reg, gen_nextiword ());
1.1 root 289: break;
1.1.1.11 root 290: case Ad8r:
291: insn_n_cycles += 2;
1.1.1.3 root 292: if (cpu_level > 1) {
293: if (next_cpu_level < 1)
294: next_cpu_level = 1;
1.1.1.5 root 295: sync_m68k_pc ();
296: start_brace ();
1.1.1.11 root 297: /* This would ordinarily be done in gen_nextiword, which we bypass. */
298: insn_n_cycles += 4;
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;
1.1.1.11 root 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;
1.1.1.11 root 308: case PC8r:
309: insn_n_cycles += 2;
1.1.1.3 root 310: if (cpu_level > 1) {
311: if (next_cpu_level < 1)
312: next_cpu_level = 1;
1.1.1.5 root 313: sync_m68k_pc ();
314: start_brace ();
1.1.1.11 root 315: /* This would ordinarily be done in gen_nextiword, which we bypass. */
316: insn_n_cycles += 4;
1.1.1.3 root 317: printf ("\tuaecptr tmppc = m68k_getpc();\n");
318: printf ("\tuaecptr %sa = get_disp_ea_020(tmppc, next_iword());\n", name);
319: } else {
1.1.1.6 root 320: printf ("\tuaecptr tmppc = m68k_getpc() + %d;\n", m68k_pc_offset);
321: printf ("\tuaecptr %sa = get_disp_ea_000(tmppc, %s);\n", name, gen_nextiword ());
1.1 root 322: }
1.1.1.3 root 323:
1.1 root 324: break;
1.1.1.11 root 325: case absw:
1.1.1.6 root 326: printf ("\tuaecptr %sa = (uae_s32)(uae_s16)%s;\n", name, gen_nextiword ());
1.1 root 327: break;
1.1.1.11 root 328: case absl:
1.1.1.6 root 329: printf ("\tuaecptr %sa = %s;\n", name, gen_nextilong ());
1.1 root 330: break;
1.1.1.11 root 331: case imm:
1.1.1.3 root 332: if (getv != 1)
333: abort ();
1.1.1.5 root 334: switch (size) {
1.1.1.11 root 335: case sz_byte:
1.1.1.6 root 336: printf ("\tuae_s8 %s = %s;\n", name, gen_nextibyte ());
1.1.1.3 root 337: break;
1.1.1.11 root 338: case sz_word:
1.1.1.6 root 339: printf ("\tuae_s16 %s = %s;\n", name, gen_nextiword ());
1.1.1.3 root 340: break;
1.1.1.11 root 341: case sz_long:
1.1.1.6 root 342: printf ("\tuae_s32 %s = %s;\n", name, gen_nextilong ());
1.1.1.3 root 343: break;
1.1.1.11 root 344: default:
1.1.1.5 root 345: abort ();
1.1.1.3 root 346: }
347: return;
1.1.1.11 root 348: case imm0:
1.1.1.5 root 349: if (getv != 1)
350: abort ();
1.1.1.6 root 351: printf ("\tuae_s8 %s = %s;\n", name, gen_nextibyte ());
1.1.1.3 root 352: return;
1.1.1.11 root 353: case imm1:
1.1.1.5 root 354: if (getv != 1)
355: abort ();
1.1.1.6 root 356: printf ("\tuae_s16 %s = %s;\n", name, gen_nextiword ());
1.1.1.3 root 357: return;
1.1.1.11 root 358: case imm2:
1.1.1.5 root 359: if (getv != 1)
360: abort ();
1.1.1.6 root 361: printf ("\tuae_s32 %s = %s;\n", name, gen_nextilong ());
1.1.1.3 root 362: return;
1.1.1.11 root 363: case immi:
1.1.1.5 root 364: if (getv != 1)
365: abort ();
1.1.1.3 root 366: printf ("\tuae_u32 %s = %s;\n", name, reg);
367: return;
1.1.1.11 root 368: default:
1.1.1.5 root 369: abort ();
1.1.1.3 root 370: }
371:
372: /* We get here for all non-reg non-immediate addressing modes to
373: * actually fetch the value. */
374:
1.1.1.6 root 375: if (using_exception_3 && getv != 0 && size != sz_byte) {
1.1.1.3 root 376: printf ("\tif ((%sa & 1) != 0) {\n", name);
377: printf ("\t\tlast_fault_for_exception_3 = %sa;\n", name);
1.1.1.5 root 378: printf ("\t\tlast_op_for_exception_3 = opcode;\n");
1.1.1.3 root 379: printf ("\t\tlast_addr_for_exception_3 = m68k_getpc() + %d;\n", m68k_pc_offset);
380: printf ("\t\tException(3, 0);\n");
381: printf ("\t\tgoto %s;\n", endlabelstr);
382: printf ("\t}\n");
1.1.1.5 root 383: need_endlabel = 1;
1.1.1.3 root 384: start_brace ();
385: }
1.1.1.6 root 386:
387: if (getv == 1) {
388: switch (size) {
1.1.1.11 root 389: case sz_byte: insn_n_cycles += 4; break;
390: case sz_word: insn_n_cycles += 4; break;
391: case sz_long: insn_n_cycles += 8; break;
392: default: abort ();
1.1.1.6 root 393: }
394: start_brace ();
395: switch (size) {
1.1.1.11 root 396: case sz_byte: printf ("\tuae_s8 %s = get_byte(%sa);\n", name, name); break;
397: case sz_word: printf ("\tuae_s16 %s = get_word(%sa);\n", name, name); break;
398: case sz_long: printf ("\tuae_s32 %s = get_long(%sa);\n", name, name); break;
399: default: abort ();
1.1.1.6 root 400: }
401: }
402:
1.1.1.3 root 403: /* We now might have to fix up the register for pre-dec or post-inc
404: * addressing modes. */
405: if (!movem)
406: switch (mode) {
1.1.1.11 root 407: case Aipi:
1.1.1.5 root 408: switch (size) {
1.1.1.11 root 409: case sz_byte:
1.1.1.3 root 410: printf ("\tm68k_areg(regs, %s) += areg_byteinc[%s];\n", reg, reg);
1.1 root 411: break;
1.1.1.11 root 412: case sz_word:
1.1.1.3 root 413: printf ("\tm68k_areg(regs, %s) += 2;\n", reg);
1.1 root 414: break;
1.1.1.11 root 415: case sz_long:
1.1.1.3 root 416: printf ("\tm68k_areg(regs, %s) += 4;\n", reg);
1.1 root 417: break;
1.1.1.11 root 418: default:
1.1.1.5 root 419: abort ();
1.1 root 420: }
1.1.1.3 root 421: break;
1.1.1.11 root 422: case Apdi:
1.1.1.3 root 423: printf ("\tm68k_areg (regs, %s) = %sa;\n", reg, name);
424: break;
1.1.1.11 root 425: default:
1.1.1.3 root 426: break;
427: }
1.1 root 428: }
429:
1.1.1.3 root 430: static void genastore (char *from, amodes mode, char *reg, wordsizes size, char *to)
1.1 root 431: {
1.1.1.5 root 432: switch (mode) {
1.1 root 433: case Dreg:
1.1.1.5 root 434: switch (size) {
1.1 root 435: case sz_byte:
1.1.1.3 root 436: printf ("\tm68k_dreg(regs, %s) = (m68k_dreg(regs, %s) & ~0xff) | ((%s) & 0xff);\n", reg, reg, from);
1.1 root 437: break;
438: case sz_word:
1.1.1.3 root 439: printf ("\tm68k_dreg(regs, %s) = (m68k_dreg(regs, %s) & ~0xffff) | ((%s) & 0xffff);\n", reg, reg, from);
1.1 root 440: break;
441: case sz_long:
1.1.1.3 root 442: printf ("\tm68k_dreg(regs, %s) = (%s);\n", reg, from);
1.1 root 443: break;
1.1.1.5 root 444: default:
445: abort ();
1.1 root 446: }
447: break;
448: case Areg:
1.1.1.5 root 449: switch (size) {
1.1 root 450: case sz_word:
1.1.1.3 root 451: fprintf (stderr, "Foo\n");
452: printf ("\tm68k_areg(regs, %s) = (uae_s32)(uae_s16)(%s);\n", reg, from);
1.1 root 453: break;
454: case sz_long:
1.1.1.3 root 455: printf ("\tm68k_areg(regs, %s) = (%s);\n", reg, from);
1.1 root 456: break;
1.1.1.5 root 457: default:
458: abort ();
1.1 root 459: }
460: break;
461: case Aind:
462: case Aipi:
463: case Apdi:
464: case Ad16:
465: case Ad8r:
466: case absw:
467: case absl:
468: case PC16:
469: case PC8r:
1.1.1.3 root 470: if (using_prefetch)
1.1.1.5 root 471: sync_m68k_pc ();
472: switch (size) {
1.1 root 473: case sz_byte:
1.1.1.11 root 474: insn_n_cycles += 4;
1.1.1.3 root 475: printf ("\tput_byte(%sa,%s);\n", to, from);
1.1 root 476: break;
477: case sz_word:
1.1.1.11 root 478: insn_n_cycles += 4;
1.1.1.5 root 479: if (cpu_level < 2 && (mode == PC16 || mode == PC8r))
480: abort ();
1.1.1.3 root 481: printf ("\tput_word(%sa,%s);\n", to, from);
1.1 root 482: break;
483: case sz_long:
1.1.1.11 root 484: insn_n_cycles += 8;
1.1.1.5 root 485: if (cpu_level < 2 && (mode == PC16 || mode == PC8r))
486: abort ();
1.1.1.3 root 487: printf ("\tput_long(%sa,%s);\n", to, from);
1.1 root 488: break;
1.1.1.5 root 489: default:
490: abort ();
1.1 root 491: }
492: break;
493: case imm:
494: case imm0:
495: case imm1:
496: case imm2:
497: case immi:
1.1.1.5 root 498: abort ();
1.1 root 499: break;
1.1.1.3 root 500: default:
1.1.1.5 root 501: abort ();
1.1 root 502: }
503: }
504:
1.1.1.5 root 505: static void genmovemel (uae_u16 opcode)
1.1 root 506: {
507: char getcode[100];
508: int size = table68k[opcode].size == sz_long ? 4 : 2;
1.1.1.3 root 509:
510: if (table68k[opcode].size == sz_long) {
1.1.1.5 root 511: strcpy (getcode, "get_long(srca)");
1.1.1.3 root 512: } else {
1.1.1.5 root 513: strcpy (getcode, "(uae_s32)(uae_s16)get_word(srca)");
1.1 root 514: }
1.1.1.3 root 515:
1.1.1.5 root 516: printf ("\tuae_u16 mask = %s;\n", gen_nextiword ());
1.1.1.3 root 517: printf ("\tunsigned int dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n");
518: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1);
1.1.1.5 root 519: start_brace ();
1.1.1.3 root 520: printf ("\twhile (dmask) { m68k_dreg(regs, movem_index1[dmask]) = %s; srca += %d; dmask = movem_next[dmask]; }\n",
1.1.1.5 root 521: getcode, size);
1.1.1.3 root 522: printf ("\twhile (amask) { m68k_areg(regs, movem_index1[amask]) = %s; srca += %d; amask = movem_next[amask]; }\n",
1.1.1.5 root 523: getcode, size);
1.1 root 524:
525: if (table68k[opcode].dmode == Aipi)
1.1.1.3 root 526: printf ("\tm68k_areg(regs, dstreg) = srca;\n");
1.1 root 527: }
528:
1.1.1.5 root 529: static void genmovemle (uae_u16 opcode)
1.1 root 530: {
531: char putcode[100];
532: int size = table68k[opcode].size == sz_long ? 4 : 2;
533: if (table68k[opcode].size == sz_long) {
1.1.1.5 root 534: strcpy (putcode, "put_long(srca,");
1.1.1.3 root 535: } else {
1.1.1.5 root 536: strcpy (putcode, "put_word(srca,");
1.1 root 537: }
1.1.1.3 root 538:
1.1.1.5 root 539: printf ("\tuae_u16 mask = %s;\n", gen_nextiword ());
1.1.1.3 root 540: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1);
541: if (using_prefetch)
1.1.1.5 root 542: sync_m68k_pc ();
1.1.1.3 root 543:
1.1.1.5 root 544: start_brace ();
1.1 root 545: if (table68k[opcode].dmode == Apdi) {
1.1.1.3 root 546: printf ("\tuae_u16 amask = mask & 0xff, dmask = (mask >> 8) & 0xff;\n");
547: printf ("\twhile (amask) { srca -= %d; %s m68k_areg(regs, movem_index2[amask])); amask = movem_next[amask]; }\n",
1.1.1.5 root 548: size, putcode);
1.1.1.3 root 549: printf ("\twhile (dmask) { srca -= %d; %s m68k_dreg(regs, movem_index2[dmask])); dmask = movem_next[dmask]; }\n",
1.1.1.5 root 550: size, putcode);
1.1.1.3 root 551: printf ("\tm68k_areg(regs, dstreg) = srca;\n");
1.1.1.2 root 552: } else {
1.1.1.3 root 553: printf ("\tuae_u16 dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n");
554: printf ("\twhile (dmask) { %s m68k_dreg(regs, movem_index1[dmask])); srca += %d; dmask = movem_next[dmask]; }\n",
1.1.1.5 root 555: putcode, size);
1.1.1.3 root 556: printf ("\twhile (amask) { %s m68k_areg(regs, movem_index1[amask])); srca += %d; amask = movem_next[amask]; }\n",
1.1.1.5 root 557: putcode, size);
1.1 root 558: }
559: }
560:
1.1.1.7 root 561: static void duplicate_carry (void)
562: {
563: printf ("\tCOPY_CARRY;\n");
564: }
565:
1.1.1.12 root 566: typedef enum
567: {
568: flag_logical_noclobber, flag_logical, flag_add, flag_sub, flag_cmp, flag_addx, flag_subx, flag_zn,
569: flag_av, flag_sv
570: }
571: flagtypes;
1.1 root 572:
1.1.1.5 root 573: static void genflags_normal (flagtypes type, wordsizes size, char *value, char *src, char *dst)
1.1 root 574: {
1.1.1.5 root 575: char vstr[100], sstr[100], dstr[100];
576: char usstr[100], udstr[100];
577: char unsstr[100], undstr[100];
1.1 root 578:
1.1.1.5 root 579: switch (size) {
1.1 root 580: case sz_byte:
1.1.1.5 root 581: strcpy (vstr, "((uae_s8)(");
582: strcpy (usstr, "((uae_u8)(");
1.1 root 583: break;
584: case sz_word:
1.1.1.5 root 585: strcpy (vstr, "((uae_s16)(");
586: strcpy (usstr, "((uae_u16)(");
1.1 root 587: break;
588: case sz_long:
1.1.1.5 root 589: strcpy (vstr, "((uae_s32)(");
590: strcpy (usstr, "((uae_u32)(");
1.1 root 591: break;
592: default:
1.1.1.5 root 593: abort ();
1.1 root 594: }
1.1.1.5 root 595: strcpy (unsstr, usstr);
1.1 root 596:
1.1.1.5 root 597: strcpy (sstr, vstr);
598: strcpy (dstr, vstr);
599: strcat (vstr, value);
600: strcat (vstr, "))");
601: strcat (dstr, dst);
602: strcat (dstr, "))");
603: strcat (sstr, src);
604: strcat (sstr, "))");
605:
606: strcpy (udstr, usstr);
607: strcat (udstr, dst);
608: strcat (udstr, "))");
609: strcat (usstr, src);
610: strcat (usstr, "))");
611:
612: strcpy (undstr, unsstr);
613: strcat (unsstr, "-");
614: strcat (undstr, "~");
615: strcat (undstr, dst);
616: strcat (undstr, "))");
617: strcat (unsstr, src);
618: strcat (unsstr, "))");
1.1 root 619:
620: switch (type) {
1.1.1.7 root 621: case flag_logical_noclobber:
1.1 root 622: case flag_logical:
623: case flag_zn:
624: case flag_av:
625: case flag_sv:
626: case flag_addx:
627: case flag_subx:
628: break;
1.1.1.3 root 629:
1.1 root 630: case flag_add:
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: case flag_sub:
635: case flag_cmp:
1.1.1.5 root 636: start_brace ();
1.1.1.3 root 637: printf ("uae_u32 %s = %s - %s;\n", value, dstr, sstr);
1.1 root 638: break;
639: }
640:
641: switch (type) {
1.1.1.7 root 642: case flag_logical_noclobber:
1.1 root 643: case flag_logical:
644: case flag_zn:
645: break;
1.1.1.3 root 646:
1.1 root 647: case flag_add:
648: case flag_sub:
649: case flag_addx:
650: case flag_subx:
651: case flag_cmp:
652: case flag_av:
653: case flag_sv:
1.1.1.5 root 654: start_brace ();
655: printf ("\t" BOOL_TYPE " flgs = %s < 0;\n", sstr);
656: printf ("\t" BOOL_TYPE " flgo = %s < 0;\n", dstr);
657: printf ("\t" BOOL_TYPE " flgn = %s < 0;\n", vstr);
1.1 root 658: break;
659: }
1.1.1.3 root 660:
1.1.1.5 root 661: switch (type) {
1.1 root 662: case flag_logical:
1.1.1.7 root 663: printf ("\tCLEAR_CZNV;\n");
664: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
665: printf ("\tSET_NFLG (%s < 0);\n", vstr);
666: break;
667: case flag_logical_noclobber:
668: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
669: printf ("\tSET_NFLG (%s < 0);\n", vstr);
1.1 root 670: break;
671: case flag_av:
1.1.1.7 root 672: printf ("\tSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n");
1.1 root 673: break;
674: case flag_sv:
1.1.1.7 root 675: printf ("\tSET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));\n");
1.1 root 676: break;
677: case flag_zn:
1.1.1.7 root 678: printf ("\tSET_ZFLG (GET_ZFLG & (%s == 0));\n", vstr);
679: printf ("\tSET_NFLG (%s < 0);\n", vstr);
1.1 root 680: break;
681: case flag_add:
1.1.1.7 root 682: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
1.1.1.8 root 683: printf ("\tSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n");
1.1.1.7 root 684: printf ("\tSET_CFLG (%s < %s);\n", undstr, usstr);
685: duplicate_carry ();
686: printf ("\tSET_NFLG (flgn != 0);\n");
1.1 root 687: break;
688: case flag_sub:
1.1.1.7 root 689: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
690: printf ("\tSET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));\n");
691: printf ("\tSET_CFLG (%s > %s);\n", usstr, udstr);
1.1.1.8 root 692: duplicate_carry ();
1.1.1.7 root 693: printf ("\tSET_NFLG (flgn != 0);\n");
1.1 root 694: break;
695: case flag_addx:
1.1.1.7 root 696: printf ("\tSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n"); /* minterm SON: 0x42 */
697: printf ("\tSET_CFLG (flgs ^ ((flgs ^ flgo) & (flgo ^ flgn)));\n"); /* minterm SON: 0xD4 */
698: duplicate_carry ();
1.1 root 699: break;
700: case flag_subx:
1.1.1.7 root 701: printf ("\tSET_VFLG ((flgs ^ flgo) & (flgo ^ flgn));\n"); /* minterm SON: 0x24 */
702: printf ("\tSET_CFLG (flgs ^ ((flgs ^ flgn) & (flgo ^ flgn)));\n"); /* minterm SON: 0xB2 */
703: duplicate_carry ();
1.1 root 704: break;
705: case flag_cmp:
1.1.1.7 root 706: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
707: printf ("\tSET_VFLG ((flgs != flgo) && (flgn != flgo));\n");
708: printf ("\tSET_CFLG (%s > %s);\n", usstr, udstr);
709: printf ("\tSET_NFLG (flgn != 0);\n");
1.1 root 710: break;
711: }
712: }
713:
1.1.1.5 root 714: static void genflags (flagtypes type, wordsizes size, char *value, char *src, char *dst)
1.1 root 715: {
1.1.1.11 root 716: /* Temporarily deleted 68k/ARM flag optimizations. I'd prefer to have
717: them in the appropriate m68k.h files and use just one copy of this
718: code here. The API can be changed if necessary. */
719: #ifdef OPTIMIZED_FLAGS
1.1 root 720: switch (type) {
1.1.1.5 root 721: case flag_add:
722: case flag_sub:
723: start_brace ();
1.1.1.3 root 724: printf ("\tuae_u32 %s;\n", value);
1.1 root 725: break;
726:
1.1.1.3 root 727: default:
1.1 root 728: break;
729: }
730:
1.1.1.3 root 731: /* At least some of those casts are fairly important! */
1.1.1.5 root 732: switch (type) {
1.1.1.7 root 733: case flag_logical_noclobber:
1.1.1.11 root 734: printf ("\t{uae_u32 oldcznv = GET_CZNV & ~(FLAGVAL_Z | FLAGVAL_N);\n");
1.1.1.7 root 735: if (strcmp (value, "0") == 0) {
1.1.1.11 root 736: printf ("\tSET_CZNV (olcznv | FLAGVAL_Z);\n");
1.1.1.7 root 737: } else {
738: switch (size) {
1.1.1.11 root 739: case sz_byte: printf ("\toptflag_testb ((uae_s8)(%s));\n", value); break;
740: case sz_word: printf ("\toptflag_testw ((uae_s16)(%s));\n", value); break;
741: case sz_long: printf ("\toptflag_testl ((uae_s32)(%s));\n", value); break;
1.1.1.7 root 742: }
1.1.1.11 root 743: printf ("\tIOR_CZNV (oldcznv);\n");
1.1.1.7 root 744: }
745: printf ("\t}\n");
746: return;
1.1 root 747: case flag_logical:
1.1.1.5 root 748: if (strcmp (value, "0") == 0) {
1.1.1.11 root 749: printf ("\tSET_CZNV (FLAGVAL_Z);\n");
1.1 root 750: } else {
1.1.1.5 root 751: switch (size) {
1.1.1.11 root 752: case sz_byte: printf ("\toptflag_testb ((uae_s8)(%s));\n", value); break;
753: case sz_word: printf ("\toptflag_testw ((uae_s16)(%s));\n", value); break;
754: case sz_long: printf ("\toptflag_testl ((uae_s32)(%s));\n", value); break;
1.1 root 755: }
756: }
757: return;
758:
759: case flag_add:
1.1.1.5 root 760: switch (size) {
1.1.1.11 root 761: case sz_byte: printf ("\toptflag_addb (%s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break;
762: case sz_word: printf ("\toptflag_addw (%s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break;
763: case sz_long: printf ("\toptflag_addl (%s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break;
1.1 root 764: }
765: return;
766:
767: case flag_sub:
1.1.1.5 root 768: switch (size) {
1.1.1.11 root 769: case sz_byte: printf ("\toptflag_subb (%s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break;
770: case sz_word: printf ("\toptflag_subw (%s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break;
771: case sz_long: printf ("\toptflag_subl (%s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break;
1.1 root 772: }
773: return;
774:
775: case flag_cmp:
1.1.1.5 root 776: switch (size) {
1.1.1.11 root 777: case sz_byte: printf ("\toptflag_cmpb ((uae_s8)(%s), (uae_s8)(%s));\n", src, dst); break;
778: case sz_word: printf ("\toptflag_cmpw ((uae_s16)(%s), (uae_s16)(%s));\n", src, dst); break;
779: case sz_long: printf ("\toptflag_cmpl ((uae_s32)(%s), (uae_s32)(%s));\n", src, dst); break;
1.1 root 780: }
781: return;
1.1.1.5 root 782:
1.1.1.3 root 783: default:
784: break;
1.1 root 785: }
786: #endif
1.1.1.11 root 787:
1.1.1.5 root 788: genflags_normal (type, size, value, src, dst);
1.1 root 789: }
1.1.1.3 root 790:
1.1.1.7 root 791: static void force_range_for_rox (const char *var, wordsizes size)
792: {
793: /* Could do a modulo operation here... which one is faster? */
794: switch (size) {
795: case sz_long:
796: printf ("\tif (%s >= 33) %s -= 33;\n", var, var);
797: break;
798: case sz_word:
799: printf ("\tif (%s >= 34) %s -= 34;\n", var, var);
800: printf ("\tif (%s >= 17) %s -= 17;\n", var, var);
801: break;
802: case sz_byte:
803: printf ("\tif (%s >= 36) %s -= 36;\n", var, var);
804: printf ("\tif (%s >= 18) %s -= 18;\n", var, var);
805: printf ("\tif (%s >= 9) %s -= 9;\n", var, var);
806: break;
807: }
808: }
809:
810: static const char *cmask (wordsizes size)
811: {
812: switch (size) {
813: case sz_byte: return "0x80";
814: case sz_word: return "0x8000";
815: case sz_long: return "0x80000000";
816: default: abort ();
817: }
818: }
819:
820: static int source_is_imm1_8 (struct instr *i)
821: {
822: return i->stype == 3;
823: }
824:
1.1.1.5 root 825: static void gen_opcode (unsigned long int opcode)
1.1 root 826: {
1.1.1.7 root 827: struct instr *curi = table68k + opcode;
1.1.1.11 root 828: insn_n_cycles = 4;
1.1.1.5 root 829:
1.1 root 830: start_brace ();
1.1.1.3 root 831: #if 0
832: printf ("uae_u8 *m68k_pc = regs.pc_p;\n");
833: #endif
834: m68k_pc_offset = 2;
1.1.1.7 root 835: switch (curi->plev) {
1.1.1.11 root 836: case 0: /* not privileged */
1.1 root 837: break;
1.1.1.11 root 838: case 1: /* unprivileged only on 68000 */
1.1.1.3 root 839: if (cpu_level == 0)
1.1 root 840: break;
1.1.1.3 root 841: if (next_cpu_level < 0)
842: next_cpu_level = 0;
843:
1.1.1.5 root 844: /* fall through */
1.1.1.11 root 845: case 2: /* priviledged */
1.1.1.3 root 846: printf ("if (!regs.s) { Exception(8,0); goto %s; }\n", endlabelstr);
1.1.1.5 root 847: need_endlabel = 1;
848: start_brace ();
1.1 root 849: break;
1.1.1.11 root 850: case 3: /* privileged if size == word */
1.1.1.7 root 851: if (curi->size == sz_byte)
1.1 root 852: break;
1.1.1.3 root 853: printf ("if (!regs.s) { Exception(8,0); goto %s; }\n", endlabelstr);
1.1.1.5 root 854: need_endlabel = 1;
855: start_brace ();
1.1 root 856: break;
857: }
1.1.1.7 root 858: switch (curi->mnemo) {
1.1.1.11 root 859: case i_OR:
860: case i_AND:
861: case i_EOR:
1.1.1.7 root 862: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
863: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
864: printf ("\tsrc %c= dst;\n", curi->mnemo == i_OR ? '|' : curi->mnemo == i_AND ? '&' : '^');
865: genflags (flag_logical, curi->size, "src", "", "");
866: genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 867: break;
1.1.1.11 root 868: case i_ORSR:
869: case i_EORSR:
1.1.1.3 root 870: printf ("\tMakeSR();\n");
1.1.1.7 root 871: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
872: if (curi->size == sz_byte) {
1.1.1.3 root 873: printf ("\tsrc &= 0xFF;\n");
1.1 root 874: }
1.1.1.7 root 875: printf ("\tregs.sr %c= src;\n", curi->mnemo == i_EORSR ? '^' : '|');
1.1.1.3 root 876: printf ("\tMakeFromSR();\n");
1.1 root 877: break;
1.1.1.11 root 878: case i_ANDSR:
1.1.1.3 root 879: printf ("\tMakeSR();\n");
1.1.1.7 root 880: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
881: if (curi->size == sz_byte) {
1.1.1.3 root 882: printf ("\tsrc |= 0xFF00;\n");
1.1 root 883: }
1.1.1.3 root 884: printf ("\tregs.sr &= src;\n");
885: printf ("\tMakeFromSR();\n");
1.1 root 886: break;
1.1.1.11 root 887: case i_SUB:
1.1.1.7 root 888: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
889: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 890: start_brace ();
1.1.1.7 root 891: genflags (flag_sub, curi->size, "newv", "src", "dst");
892: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 893: break;
1.1.1.11 root 894: case i_SUBA:
1.1.1.7 root 895: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
896: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1 root 897: start_brace ();
1.1.1.3 root 898: printf ("\tuae_u32 newv = dst - src;\n");
1.1.1.7 root 899: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1 root 900: break;
1.1.1.11 root 901: case i_SUBX:
1.1.1.7 root 902: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
903: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 904: start_brace ();
1.1.1.7 root 905: printf ("\tuae_u32 newv = dst - src - (GET_XFLG ? 1 : 0);\n");
906: genflags (flag_subx, curi->size, "newv", "src", "dst");
907: genflags (flag_zn, curi->size, "newv", "", "");
908: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 909: break;
1.1.1.11 root 910: case i_SBCD:
1.1.1.7 root 911: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
912: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 913: start_brace ();
1.1.1.7 root 914: printf ("\tuae_u16 newv_lo = (dst & 0xF) - (src & 0xF) - (GET_XFLG ? 1 : 0);\n");
1.1.1.3 root 915: printf ("\tuae_u16 newv_hi = (dst & 0xF0) - (src & 0xF0);\n");
1.1.1.14 root 916: printf ("\tuae_u16 newv, tmp_newv;\n");
917: printf ("\tint bcd = 0;\n");
918: printf ("\tnewv = tmp_newv = newv_hi + newv_lo;\n");
919: printf ("\tif (newv_lo & 0xF0) { newv -= 6; bcd = 6; };\n");
920: printf ("\tif ((((dst & 0xFF) - (src & 0xFF) - (GET_XFLG ? 1 : 0)) & 0x100) > 0xFF) { newv -= 0x60; }\n");
921: printf ("\tSET_CFLG ((((dst & 0xFF) - (src & 0xFF) - bcd - (GET_XFLG ? 1 : 0)) & 0x300) > 0xFF);\n");
1.1.1.7 root 922: duplicate_carry ();
923: genflags (flag_zn, curi->size, "newv", "", "");
1.1.1.14 root 924: printf ("\tSET_VFLG ((tmp_newv & 0x80) != 0 && (newv & 0x80) == 0);\n");
1.1.1.7 root 925: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 926: break;
1.1.1.11 root 927: case i_ADD:
1.1.1.7 root 928: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
929: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 930: start_brace ();
1.1.1.7 root 931: genflags (flag_add, curi->size, "newv", "src", "dst");
932: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 933: break;
1.1.1.11 root 934: case i_ADDA:
1.1.1.7 root 935: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
936: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1 root 937: start_brace ();
1.1.1.3 root 938: printf ("\tuae_u32 newv = dst + src;\n");
1.1.1.7 root 939: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1 root 940: break;
1.1.1.11 root 941: case i_ADDX:
1.1.1.7 root 942: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
943: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 944: start_brace ();
1.1.1.7 root 945: printf ("\tuae_u32 newv = dst + src + (GET_XFLG ? 1 : 0);\n");
946: genflags (flag_addx, curi->size, "newv", "src", "dst");
947: genflags (flag_zn, curi->size, "newv", "", "");
948: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 949: break;
1.1.1.11 root 950: case i_ABCD:
1.1.1.7 root 951: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
952: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 953: start_brace ();
1.1.1.7 root 954: printf ("\tuae_u16 newv_lo = (src & 0xF) + (dst & 0xF) + (GET_XFLG ? 1 : 0);\n");
1.1.1.3 root 955: printf ("\tuae_u16 newv_hi = (src & 0xF0) + (dst & 0xF0);\n");
1.1.1.14 root 956: printf ("\tuae_u16 newv, tmp_newv;\n");
1.1.1.7 root 957: printf ("\tint cflg;\n");
1.1.1.14 root 958: printf ("\tnewv = tmp_newv = newv_hi + newv_lo;");
959: printf ("\tif (newv_lo > 9) { newv += 6; }\n");
960: printf ("\tcflg = (newv & 0x3F0) > 0x90;\n");
961: printf ("\tif (cflg) newv += 0x60;\n");
1.1.1.12 root 962: printf ("\tSET_CFLG (cflg);\n");
1.1.1.7 root 963: duplicate_carry ();
964: genflags (flag_zn, curi->size, "newv", "", "");
1.1.1.14 root 965: printf ("\tSET_VFLG ((tmp_newv & 0x80) == 0 && (newv & 0x80) != 0);\n");
1.1.1.7 root 966: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 967: break;
1.1.1.11 root 968: case i_NEG:
1.1.1.7 root 969: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1 root 970: start_brace ();
1.1.1.7 root 971: genflags (flag_sub, curi->size, "dst", "src", "0");
972: genastore ("dst", curi->smode, "srcreg", curi->size, "src");
1.1 root 973: break;
1.1.1.11 root 974: case i_NEGX:
1.1.1.7 root 975: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1 root 976: start_brace ();
1.1.1.7 root 977: printf ("\tuae_u32 newv = 0 - src - (GET_XFLG ? 1 : 0);\n");
978: genflags (flag_subx, curi->size, "newv", "src", "0");
979: genflags (flag_zn, curi->size, "newv", "", "");
980: genastore ("newv", curi->smode, "srcreg", curi->size, "src");
1.1 root 981: break;
1.1.1.11 root 982: case i_NBCD:
1.1.1.7 root 983: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1 root 984: start_brace ();
1.1.1.7 root 985: printf ("\tuae_u16 newv_lo = - (src & 0xF) - (GET_XFLG ? 1 : 0);\n");
1.1.1.3 root 986: printf ("\tuae_u16 newv_hi = - (src & 0xF0);\n");
987: printf ("\tuae_u16 newv;\n");
1.1.1.7 root 988: printf ("\tint cflg;\n");
1.1.1.14 root 989: printf ("\tif (newv_lo > 9) { newv_lo -= 6; }\n");
990: printf ("\tnewv = newv_hi + newv_lo;");
991: printf ("\tcflg = (newv & 0x1F0) > 0x90;\n");
992: printf ("\tif (cflg) newv -= 0x60;\n");
1.1.1.12 root 993: printf ("\tSET_CFLG (cflg);\n");
1.1.1.8 root 994: duplicate_carry();
1.1.1.7 root 995: genflags (flag_zn, curi->size, "newv", "", "");
996: genastore ("newv", curi->smode, "srcreg", curi->size, "src");
1.1 root 997: break;
1.1.1.11 root 998: case i_CLR:
1.1.1.7 root 999: genamode (curi->smode, "srcreg", curi->size, "src", 2, 0);
1000: genflags (flag_logical, curi->size, "0", "", "");
1001: genastore ("0", curi->smode, "srcreg", curi->size, "src");
1.1 root 1002: break;
1.1.1.11 root 1003: case i_NOT:
1.1.1.7 root 1004: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1 root 1005: start_brace ();
1.1.1.3 root 1006: printf ("\tuae_u32 dst = ~src;\n");
1.1.1.7 root 1007: genflags (flag_logical, curi->size, "dst", "", "");
1008: genastore ("dst", curi->smode, "srcreg", curi->size, "src");
1.1 root 1009: break;
1.1.1.11 root 1010: case i_TST:
1.1.1.7 root 1011: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1012: genflags (flag_logical, curi->size, "src", "", "");
1.1 root 1013: break;
1.1.1.11 root 1014: case i_BTST:
1.1.1.7 root 1015: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1016: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1017: if (curi->size == sz_byte)
1.1.1.3 root 1018: printf ("\tsrc &= 7;\n");
1.1 root 1019: else
1.1.1.3 root 1020: printf ("\tsrc &= 31;\n");
1.1.1.7 root 1021: printf ("\tSET_ZFLG (1 ^ ((dst >> src) & 1));\n");
1.1 root 1022: break;
1.1.1.11 root 1023: case i_BCHG:
1.1.1.7 root 1024: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1025: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1026: if (curi->size == sz_byte)
1.1.1.3 root 1027: printf ("\tsrc &= 7;\n");
1.1 root 1028: else
1.1.1.3 root 1029: printf ("\tsrc &= 31;\n");
1030: printf ("\tdst ^= (1 << src);\n");
1.1.1.9 root 1031: printf ("\tSET_ZFLG (((uae_u32)dst & (1 << src)) >> src);\n");
1.1.1.7 root 1032: genastore ("dst", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1033: break;
1.1.1.11 root 1034: case i_BCLR:
1.1.1.7 root 1035: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1036: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1037: if (curi->size == sz_byte)
1.1.1.3 root 1038: printf ("\tsrc &= 7;\n");
1.1 root 1039: else
1.1.1.3 root 1040: printf ("\tsrc &= 31;\n");
1.1.1.7 root 1041: printf ("\tSET_ZFLG (1 ^ ((dst >> src) & 1));\n");
1.1.1.3 root 1042: printf ("\tdst &= ~(1 << src);\n");
1.1.1.7 root 1043: genastore ("dst", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1044: break;
1.1.1.11 root 1045: case i_BSET:
1.1.1.7 root 1046: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1047: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1048: if (curi->size == sz_byte)
1.1.1.3 root 1049: printf ("\tsrc &= 7;\n");
1.1 root 1050: else
1.1.1.3 root 1051: printf ("\tsrc &= 31;\n");
1.1.1.7 root 1052: printf ("\tSET_ZFLG (1 ^ ((dst >> src) & 1));\n");
1.1.1.3 root 1053: printf ("\tdst |= (1 << src);\n");
1.1.1.7 root 1054: genastore ("dst", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1055: break;
1.1.1.11 root 1056: case i_CMPM:
1057: case i_CMP:
1.1.1.7 root 1058: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1059: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 1060: start_brace ();
1.1.1.7 root 1061: genflags (flag_cmp, curi->size, "newv", "src", "dst");
1.1 root 1062: break;
1.1.1.11 root 1063: case i_CMPA:
1.1.1.7 root 1064: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1065: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1 root 1066: start_brace ();
1.1.1.5 root 1067: genflags (flag_cmp, sz_long, "newv", "src", "dst");
1.1 root 1068: break;
1069: /* The next two are coded a little unconventional, but they are doing
1070: * weird things... */
1.1.1.11 root 1071: case i_MVPRM:
1.1.1.7 root 1072: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.5 root 1073:
1074: printf ("\tuaecptr memp = m68k_areg(regs, dstreg) + (uae_s32)(uae_s16)%s;\n", gen_nextiword ());
1.1.1.7 root 1075: if (curi->size == sz_word) {
1.1.1.3 root 1076: printf ("\tput_byte(memp, src >> 8); put_byte(memp + 2, src);\n");
1.1 root 1077: } else {
1.1.1.3 root 1078: printf ("\tput_byte(memp, src >> 24); put_byte(memp + 2, src >> 16);\n");
1079: printf ("\tput_byte(memp + 4, src >> 8); put_byte(memp + 6, src);\n");
1.1 root 1080: }
1081: break;
1.1.1.11 root 1082: case i_MVPMR:
1.1.1.5 root 1083: printf ("\tuaecptr memp = m68k_areg(regs, srcreg) + (uae_s32)(uae_s16)%s;\n", gen_nextiword ());
1.1.1.7 root 1084: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1085: if (curi->size == sz_word) {
1.1.1.3 root 1086: printf ("\tuae_u16 val = (get_byte(memp) << 8) + get_byte(memp + 2);\n");
1.1 root 1087: } else {
1.1.1.3 root 1088: printf ("\tuae_u32 val = (get_byte(memp) << 24) + (get_byte(memp + 2) << 16)\n");
1089: printf (" + (get_byte(memp + 4) << 8) + get_byte(memp + 6);\n");
1.1 root 1090: }
1.1.1.7 root 1091: genastore ("val", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1092: break;
1.1.1.11 root 1093: case i_MOVE:
1.1.1.7 root 1094: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1095: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1096: genflags (flag_logical, curi->size, "src", "", "");
1097: genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1098: break;
1.1.1.11 root 1099: case i_MOVEA:
1.1.1.7 root 1100: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1101: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1102: if (curi->size == sz_word) {
1.1.1.3 root 1103: printf ("\tuae_u32 val = (uae_s32)(uae_s16)src;\n");
1.1 root 1104: } else {
1.1.1.3 root 1105: printf ("\tuae_u32 val = src;\n");
1.1 root 1106: }
1.1.1.7 root 1107: genastore ("val", curi->dmode, "dstreg", sz_long, "dst");
1.1 root 1108: break;
1.1.1.11 root 1109: case i_MVSR2:
1.1.1.7 root 1110: genamode (curi->smode, "srcreg", sz_word, "src", 2, 0);
1.1.1.3 root 1111: printf ("\tMakeSR();\n");
1.1.1.7 root 1112: if (curi->size == sz_byte)
1113: genastore ("regs.sr & 0xff", curi->smode, "srcreg", sz_word, "src");
1.1 root 1114: else
1.1.1.7 root 1115: genastore ("regs.sr", curi->smode, "srcreg", sz_word, "src");
1.1 root 1116: break;
1.1.1.11 root 1117: case i_MV2SR:
1.1.1.7 root 1118: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1119: if (curi->size == sz_byte)
1.1.1.3 root 1120: printf ("\tMakeSR();\n\tregs.sr &= 0xFF00;\n\tregs.sr |= src & 0xFF;\n");
1121: else {
1122: printf ("\tregs.sr = src;\n");
1.1 root 1123: }
1.1.1.3 root 1124: printf ("\tMakeFromSR();\n");
1.1 root 1125: break;
1.1.1.11 root 1126: case i_SWAP:
1.1.1.7 root 1127: genamode (curi->smode, "srcreg", sz_long, "src", 1, 0);
1.1 root 1128: start_brace ();
1.1.1.3 root 1129: printf ("\tuae_u32 dst = ((src >> 16)&0xFFFF) | ((src&0xFFFF)<<16);\n");
1.1.1.5 root 1130: genflags (flag_logical, sz_long, "dst", "", "");
1.1.1.7 root 1131: genastore ("dst", curi->smode, "srcreg", sz_long, "src");
1.1 root 1132: break;
1.1.1.11 root 1133: case i_EXG:
1.1.1.7 root 1134: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1135: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1136: genastore ("dst", curi->smode, "srcreg", curi->size, "src");
1137: genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1138: break;
1.1.1.11 root 1139: case i_EXT:
1.1.1.7 root 1140: genamode (curi->smode, "srcreg", sz_long, "src", 1, 0);
1.1 root 1141: start_brace ();
1.1.1.7 root 1142: switch (curi->size) {
1.1.1.11 root 1143: case sz_byte: printf ("\tuae_u32 dst = (uae_s32)(uae_s8)src;\n"); break;
1144: case sz_word: printf ("\tuae_u16 dst = (uae_s16)(uae_s8)src;\n"); break;
1145: case sz_long: printf ("\tuae_u32 dst = (uae_s32)(uae_s16)src;\n"); break;
1146: default: abort ();
1.1 root 1147: }
1.1.1.5 root 1148: genflags (flag_logical,
1.1.1.7 root 1149: curi->size == sz_word ? sz_word : sz_long, "dst", "", "");
1150: genastore ("dst", curi->smode, "srcreg",
1151: curi->size == sz_word ? sz_word : sz_long, "src");
1.1 root 1152: break;
1.1.1.11 root 1153: case i_MVMEL:
1.1.1.5 root 1154: genmovemel (opcode);
1.1 root 1155: break;
1.1.1.11 root 1156: case i_MVMLE:
1.1.1.5 root 1157: genmovemle (opcode);
1.1 root 1158: break;
1.1.1.11 root 1159: case i_TRAP:
1.1.1.7 root 1160: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.5 root 1161: sync_m68k_pc ();
1.1.1.3 root 1162: printf ("\tException(src+32,0);\n");
1163: m68k_pc_offset = 0;
1.1 root 1164: break;
1.1.1.11 root 1165: case i_MVR2USP:
1.1.1.7 root 1166: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.3 root 1167: printf ("\tregs.usp = src;\n");
1.1 root 1168: break;
1.1.1.11 root 1169: case i_MVUSP2R:
1.1.1.7 root 1170: genamode (curi->smode, "srcreg", curi->size, "src", 2, 0);
1171: genastore ("regs.usp", curi->smode, "srcreg", curi->size, "src");
1.1 root 1172: break;
1.1.1.11 root 1173: case i_RESET:
1.1.1.3 root 1174: printf ("\tcustomreset();\n");
1.1 root 1175: break;
1.1.1.11 root 1176: case i_NOP:
1.1 root 1177: break;
1.1.1.11 root 1178: case i_STOP:
1.1.1.7 root 1179: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.3 root 1180: printf ("\tregs.sr = src;\n");
1181: printf ("\tMakeFromSR();\n");
1182: printf ("\tm68k_setstopped(1);\n");
1.1 root 1183: break;
1.1.1.11 root 1184: case i_RTE:
1.1.1.3 root 1185: if (cpu_level == 0) {
1186: genamode (Aipi, "7", sz_word, "sr", 1, 0);
1187: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1188: printf ("\tregs.sr = sr; m68k_setpc_rte(pc);\n");
1189: fill_prefetch_0 ();
1190: printf ("\tMakeFromSR();\n");
1191: } else {
1.1 root 1192: int old_brace_level = n_braces;
1.1.1.3 root 1193: if (next_cpu_level < 0)
1194: next_cpu_level = 0;
1195: printf ("\tuae_u16 newsr; uae_u32 newpc; for (;;) {\n");
1196: genamode (Aipi, "7", sz_word, "sr", 1, 0);
1197: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1198: genamode (Aipi, "7", sz_word, "format", 1, 0);
1199: printf ("\tnewsr = sr; newpc = pc;\n");
1200: printf ("\tif ((format & 0xF000) == 0x0000) { break; }\n");
1201: printf ("\telse if ((format & 0xF000) == 0x1000) { ; }\n");
1202: printf ("\telse if ((format & 0xF000) == 0x2000) { m68k_areg(regs, 7) += 4; break; }\n");
1203: printf ("\telse if ((format & 0xF000) == 0x8000) { m68k_areg(regs, 7) += 50; break; }\n");
1204: printf ("\telse if ((format & 0xF000) == 0x9000) { m68k_areg(regs, 7) += 12; break; }\n");
1205: printf ("\telse if ((format & 0xF000) == 0xa000) { m68k_areg(regs, 7) += 24; break; }\n");
1206: printf ("\telse if ((format & 0xF000) == 0xb000) { m68k_areg(regs, 7) += 84; break; }\n");
1207: printf ("\telse { Exception(14,0); goto %s; }\n", endlabelstr);
1208: printf ("\tregs.sr = newsr; MakeFromSR();\n}\n");
1.1 root 1209: pop_braces (old_brace_level);
1.1.1.3 root 1210: printf ("\tregs.sr = newsr; MakeFromSR();\n");
1211: printf ("\tm68k_setpc_rte(newpc);\n");
1212: fill_prefetch_0 ();
1.1.1.5 root 1213: need_endlabel = 1;
1.1 root 1214: }
1.1.1.3 root 1215: /* PC is set and prefetch filled. */
1216: m68k_pc_offset = 0;
1.1 root 1217: break;
1.1.1.11 root 1218: case i_RTD:
1.1.1.3 root 1219: printf ("\tcompiler_flush_jsr_stack();\n");
1220: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1.1.1.7 root 1221: genamode (curi->smode, "srcreg", curi->size, "offs", 1, 0);
1.1.1.3 root 1222: printf ("\tm68k_areg(regs, 7) += offs;\n");
1223: printf ("\tm68k_setpc_rte(pc);\n");
1224: fill_prefetch_0 ();
1225: /* PC is set and prefetch filled. */
1226: m68k_pc_offset = 0;
1.1 root 1227: break;
1.1.1.11 root 1228: case i_LINK:
1.1.1.3 root 1229: genamode (Apdi, "7", sz_long, "old", 2, 0);
1.1.1.7 root 1230: genamode (curi->smode, "srcreg", sz_long, "src", 1, 0);
1.1.1.3 root 1231: genastore ("src", Apdi, "7", sz_long, "old");
1.1.1.7 root 1232: genastore ("m68k_areg(regs, 7)", curi->smode, "srcreg", sz_long, "src");
1233: genamode (curi->dmode, "dstreg", curi->size, "offs", 1, 0);
1.1.1.3 root 1234: printf ("\tm68k_areg(regs, 7) += offs;\n");
1.1 root 1235: break;
1.1.1.11 root 1236: case i_UNLK:
1.1.1.7 root 1237: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.3 root 1238: printf ("\tm68k_areg(regs, 7) = src;\n");
1239: genamode (Aipi, "7", sz_long, "old", 1, 0);
1.1.1.7 root 1240: genastore ("old", curi->smode, "srcreg", curi->size, "src");
1.1 root 1241: break;
1.1.1.11 root 1242: case i_RTS:
1.1.1.3 root 1243: printf ("\tm68k_do_rts();\n");
1244: fill_prefetch_0 ();
1245: m68k_pc_offset = 0;
1.1 root 1246: break;
1.1.1.11 root 1247: case i_TRAPV:
1.1.1.3 root 1248: sync_m68k_pc ();
1.1.1.7 root 1249: printf ("\tif (GET_VFLG) { Exception(7,m68k_getpc()); goto %s; }\n", endlabelstr);
1.1.1.5 root 1250: need_endlabel = 1;
1.1 root 1251: break;
1.1.1.11 root 1252: case i_RTR:
1.1.1.3 root 1253: printf ("\tcompiler_flush_jsr_stack();\n");
1254: printf ("\tMakeSR();\n");
1255: genamode (Aipi, "7", sz_word, "sr", 1, 0);
1256: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1257: printf ("\tregs.sr &= 0xFF00; sr &= 0xFF;\n");
1258: printf ("\tregs.sr |= sr; m68k_setpc(pc);\n");
1259: fill_prefetch_0 ();
1260: printf ("\tMakeFromSR();\n");
1261: m68k_pc_offset = 0;
1.1 root 1262: break;
1.1.1.11 root 1263: case i_JSR:
1.1.1.7 root 1264: genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
1.1.1.3 root 1265: printf ("\tm68k_do_jsr(m68k_getpc() + %d, srca);\n", m68k_pc_offset);
1266: fill_prefetch_0 ();
1267: m68k_pc_offset = 0;
1268: break;
1.1.1.11 root 1269: case i_JMP:
1.1.1.7 root 1270: genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
1.1.1.3 root 1271: printf ("\tm68k_setpc(srca);\n");
1272: fill_prefetch_0 ();
1273: m68k_pc_offset = 0;
1.1 root 1274: break;
1.1.1.11 root 1275: case i_BSR:
1.1.1.7 root 1276: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.3 root 1277: printf ("\tuae_s32 s = (uae_s32)src + 2;\n");
1278: if (using_exception_3) {
1279: printf ("\tif (src & 1) {\n");
1280: printf ("\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1281: printf ("\t\tlast_fault_for_exception_3 = m68k_getpc() + s;\n");
1282: printf ("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1283: printf ("\t}\n");
1.1.1.5 root 1284: need_endlabel = 1;
1.1.1.3 root 1285: }
1286: printf ("\tm68k_do_bsr(m68k_getpc() + %d, s);\n", m68k_pc_offset);
1287: fill_prefetch_0 ();
1288: m68k_pc_offset = 0;
1.1 root 1289: break;
1.1.1.11 root 1290: case i_Bcc:
1.1.1.7 root 1291: if (curi->size == sz_long) {
1.1.1.3 root 1292: if (cpu_level < 2) {
1293: printf ("\tm68k_incpc(2);\n");
1.1.1.7 root 1294: printf ("\tif (!cctrue(%d)) goto %s;\n", curi->cc, endlabelstr);
1.1.1.3 root 1295: printf ("\t\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1296: printf ("\t\tlast_fault_for_exception_3 = m68k_getpc() + 1;\n");
1297: printf ("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1.1.1.5 root 1298: need_endlabel = 1;
1.1.1.3 root 1299: } else {
1300: if (next_cpu_level < 1)
1301: next_cpu_level = 1;
1302: }
1303: }
1.1.1.7 root 1304: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1305: printf ("\tif (!cctrue(%d)) goto didnt_jump;\n", curi->cc);
1.1.1.3 root 1306: if (using_exception_3) {
1307: printf ("\tif (src & 1) {\n");
1308: printf ("\t\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1309: printf ("\t\tlast_fault_for_exception_3 = m68k_getpc() + 2 + (uae_s32)src;\n");
1310: printf ("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1311: printf ("\t}\n");
1.1.1.5 root 1312: need_endlabel = 1;
1.1.1.3 root 1313: }
1.1 root 1314: #ifdef USE_COMPILER
1.1.1.3 root 1315: printf ("\tm68k_setpc_bcc(m68k_getpc() + 2 + (uae_s32)src);\n");
1.1 root 1316: #else
1.1.1.3 root 1317: printf ("\tm68k_incpc ((uae_s32)src + 2);\n");
1.1 root 1318: #endif
1.1.1.3 root 1319: fill_prefetch_0 ();
1.1.1.14 root 1320: printf ("\treturn 5 * CYCLE_UNIT;\n");
1.1.1.3 root 1321: printf ("didnt_jump:;\n");
1.1.1.5 root 1322: need_endlabel = 1;
1.1.1.11 root 1323: insn_n_cycles = curi->size == sz_byte ? 8 : 12;
1.1 root 1324: break;
1.1.1.11 root 1325: case i_LEA:
1.1.1.7 root 1326: genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
1327: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1328: genastore ("srca", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1329: break;
1.1.1.11 root 1330: case i_PEA:
1.1.1.7 root 1331: genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
1.1.1.3 root 1332: genamode (Apdi, "7", sz_long, "dst", 2, 0);
1333: genastore ("srca", Apdi, "7", sz_long, "dst");
1.1 root 1334: break;
1.1.1.11 root 1335: case i_DBcc:
1.1.1.7 root 1336: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1337: genamode (curi->dmode, "dstreg", curi->size, "offs", 1, 0);
1.1.1.3 root 1338:
1.1.1.7 root 1339: printf ("\tif (!cctrue(%d)) {\n", curi->cc);
1340: genastore ("(src-1)", curi->smode, "srcreg", curi->size, "src");
1.1.1.3 root 1341:
1342: printf ("\t\tif (src) {\n");
1343: if (using_exception_3) {
1344: printf ("\t\t\tif (offs & 1) {\n");
1345: printf ("\t\t\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1346: printf ("\t\t\tlast_fault_for_exception_3 = m68k_getpc() + 2 + (uae_s32)offs + 2;\n");
1347: printf ("\t\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1348: printf ("\t\t}\n");
1.1.1.5 root 1349: need_endlabel = 1;
1.1.1.3 root 1350: }
1.1 root 1351: #ifdef USE_COMPILER
1.1.1.3 root 1352: printf ("\t\t\tm68k_setpc_bcc(m68k_getpc() + (uae_s32)offs + 2);\n");
1.1 root 1353: #else
1.1.1.3 root 1354: printf ("\t\t\tm68k_incpc((uae_s32)offs + 2);\n");
1.1 root 1355: #endif
1.1.1.3 root 1356: fill_prefetch_0 ();
1.1.1.11 root 1357: /* ??? Cycle count is a guess. */
1.1.1.14 root 1358: printf ("\t\treturn 6 * CYCLE_UNIT;\n");
1.1.1.3 root 1359: printf ("\t\t}\n");
1360: printf ("\t}\n");
1.1.1.11 root 1361: insn_n_cycles = 12;
1.1.1.5 root 1362: need_endlabel = 1;
1.1 root 1363: break;
1.1.1.11 root 1364: case i_Scc:
1.1.1.7 root 1365: genamode (curi->smode, "srcreg", curi->size, "src", 2, 0);
1.1 root 1366: start_brace ();
1.1.1.7 root 1367: printf ("\tint val = cctrue(%d) ? 0xff : 0;\n", curi->cc);
1368: genastore ("val", curi->smode, "srcreg", curi->size, "src");
1.1 root 1369: break;
1.1.1.11 root 1370: case i_DIVU:
1.1.1.3 root 1371: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1372: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1373: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1.1.10 root 1374: sync_m68k_pc ();
1.1.1.9 root 1375: /* Clear V flag when dividing by zero - Alcatraz Odyssey demo depends
1376: * on this (actually, it's doing a DIVS). */
1377: printf ("\tif (src == 0) { SET_VFLG (0); Exception (5, oldpc); goto %s; } else {\n", endlabelstr);
1.1.1.3 root 1378: printf ("\tuae_u32 newv = (uae_u32)dst / (uae_u32)(uae_u16)src;\n");
1379: printf ("\tuae_u32 rem = (uae_u32)dst %% (uae_u32)(uae_u16)src;\n");
1.1 root 1380: /* The N flag appears to be set each time there is an overflow.
1381: * Weird. */
1.1.1.7 root 1382: printf ("\tif (newv > 0xffff) { SET_VFLG (1); SET_NFLG (1); SET_CFLG (0); } else\n\t{\n");
1.1.1.5 root 1383: genflags (flag_logical, sz_word, "newv", "", "");
1.1.1.3 root 1384: printf ("\tnewv = (newv & 0xffff) | ((uae_u32)rem << 16);\n");
1.1.1.7 root 1385: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1.1.3 root 1386: printf ("\t}\n");
1387: printf ("\t}\n");
1.1.1.11 root 1388: insn_n_cycles += 136;
1.1.1.5 root 1389: need_endlabel = 1;
1.1.1.3 root 1390: break;
1.1.1.11 root 1391: case i_DIVS:
1.1.1.3 root 1392: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1393: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1394: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1.1.10 root 1395: sync_m68k_pc ();
1.1.1.9 root 1396: printf ("\tif (src == 0) { SET_VFLG (0); Exception(5,oldpc); goto %s; } else {\n", endlabelstr);
1.1.1.3 root 1397: printf ("\tuae_s32 newv = (uae_s32)dst / (uae_s32)(uae_s16)src;\n");
1398: printf ("\tuae_u16 rem = (uae_s32)dst %% (uae_s32)(uae_s16)src;\n");
1.1.1.7 root 1399: 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 1400: printf ("\tif (((uae_s16)rem < 0) != ((uae_s32)dst < 0)) rem = -rem;\n");
1.1.1.5 root 1401: genflags (flag_logical, sz_word, "newv", "", "");
1.1.1.3 root 1402: printf ("\tnewv = (newv & 0xffff) | ((uae_u32)rem << 16);\n");
1.1.1.7 root 1403: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1.1.3 root 1404: printf ("\t}\n");
1405: printf ("\t}\n");
1.1.1.11 root 1406: insn_n_cycles += 154;
1.1.1.5 root 1407: need_endlabel = 1;
1.1.1.3 root 1408: break;
1.1.1.11 root 1409: case i_MULU:
1.1.1.7 root 1410: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1411: genamode (curi->dmode, "dstreg", sz_word, "dst", 1, 0);
1.1 root 1412: start_brace ();
1.1.1.3 root 1413: printf ("\tuae_u32 newv = (uae_u32)(uae_u16)dst * (uae_u32)(uae_u16)src;\n");
1.1.1.5 root 1414: genflags (flag_logical, sz_long, "newv", "", "");
1.1.1.7 root 1415: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1.1.11 root 1416: insn_n_cycles += 66;
1.1 root 1417: break;
1.1.1.11 root 1418: case i_MULS:
1.1.1.7 root 1419: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1420: genamode (curi->dmode, "dstreg", sz_word, "dst", 1, 0);
1.1 root 1421: start_brace ();
1.1.1.3 root 1422: printf ("\tuae_u32 newv = (uae_s32)(uae_s16)dst * (uae_s32)(uae_s16)src;\n");
1.1.1.5 root 1423: genflags (flag_logical, sz_long, "newv", "", "");
1.1.1.7 root 1424: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1.1.11 root 1425: insn_n_cycles += 66;
1.1 root 1426: break;
1.1.1.11 root 1427: case i_CHK:
1.1.1.3 root 1428: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1429: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1430: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1431: printf ("\tif ((uae_s32)dst < 0) { SET_NFLG (1); Exception(6,oldpc); goto %s; }\n", endlabelstr);
1432: printf ("\telse if (dst > src) { SET_NFLG (0); Exception(6,oldpc); goto %s; }\n", endlabelstr);
1.1.1.5 root 1433: need_endlabel = 1;
1.1 root 1434: break;
1.1.1.3 root 1435:
1.1.1.11 root 1436: case i_CHK2:
1.1.1.3 root 1437: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1438: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1439: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1.1.1.3 root 1440: printf ("\t{uae_s32 upper,lower,reg = regs.regs[(extra >> 12) & 15];\n");
1.1.1.7 root 1441: switch (curi->size) {
1.1.1.11 root 1442: case sz_byte:
1.1.1.3 root 1443: printf ("\tlower=(uae_s32)(uae_s8)get_byte(dsta); upper = (uae_s32)(uae_s8)get_byte(dsta+1);\n");
1444: printf ("\tif ((extra & 0x8000) == 0) reg = (uae_s32)(uae_s8)reg;\n");
1445: break;
1.1.1.11 root 1446: case sz_word:
1.1.1.3 root 1447: printf ("\tlower=(uae_s32)(uae_s16)get_word(dsta); upper = (uae_s32)(uae_s16)get_word(dsta+2);\n");
1448: printf ("\tif ((extra & 0x8000) == 0) reg = (uae_s32)(uae_s16)reg;\n");
1449: break;
1.1.1.11 root 1450: case sz_long:
1.1.1.3 root 1451: printf ("\tlower=get_long(dsta); upper = get_long(dsta+4);\n");
1452: break;
1.1.1.11 root 1453: default:
1.1.1.5 root 1454: abort ();
1.1.1.3 root 1455: }
1.1.1.7 root 1456: printf ("\tSET_ZFLG (upper == reg || lower == reg);\n");
1457: printf ("\tSET_CFLG (lower <= upper ? reg < lower || reg > upper : reg > upper || reg < lower);\n");
1458: printf ("\tif ((extra & 0x800) && GET_CFLG) { Exception(6,oldpc); goto %s; }\n}\n", endlabelstr);
1.1.1.5 root 1459: need_endlabel = 1;
1.1.1.3 root 1460: break;
1461:
1.1.1.11 root 1462: case i_ASR:
1.1.1.7 root 1463: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1464: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1.1.3 root 1465: start_brace ();
1.1.1.7 root 1466: switch (curi->size) {
1.1.1.11 root 1467: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1468: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1469: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1470: default: abort ();
1.1 root 1471: }
1.1.1.7 root 1472: printf ("\tuae_u32 sign = (%s & val) >> %d;\n", cmask (curi->size), bit_size (curi->size) - 1);
1.1.1.3 root 1473: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1474: printf ("\tCLEAR_CZNV;\n");
1475: printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
1476: printf ("\t\tval = %s & (uae_u32)-sign;\n", bit_mask (curi->size));
1477: printf ("\t\tSET_CFLG (sign);\n");
1478: duplicate_carry ();
1479: if (source_is_imm1_8 (curi))
1480: printf ("\t} else {\n");
1481: else
1482: printf ("\t} else if (cnt > 0) {\n");
1483: printf ("\t\tval >>= cnt - 1;\n");
1484: printf ("\t\tSET_CFLG (val & 1);\n");
1485: duplicate_carry ();
1486: printf ("\t\tval >>= 1;\n");
1487: printf ("\t\tval |= (%s << (%d - cnt)) & (uae_u32)-sign;\n",
1488: bit_mask (curi->size),
1489: bit_size (curi->size));
1490: printf ("\t\tval &= %s;\n", bit_mask (curi->size));
1491: printf ("\t}\n");
1492: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1493: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1494: break;
1.1.1.11 root 1495: case i_ASL:
1.1.1.7 root 1496: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1497: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1498: start_brace ();
1.1.1.7 root 1499: switch (curi->size) {
1.1.1.11 root 1500: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1501: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1502: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1503: default: abort ();
1.1 root 1504: }
1.1.1.3 root 1505: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1506: printf ("\tCLEAR_CZNV;\n");
1507: printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
1508: printf ("\t\tSET_VFLG (val != 0);\n");
1509: printf ("\t\tSET_CFLG (cnt == %d ? val & 1 : 0);\n",
1510: bit_size (curi->size));
1511: duplicate_carry ();
1.1.1.3 root 1512: printf ("\t\tval = 0;\n");
1.1.1.7 root 1513: if (source_is_imm1_8 (curi))
1514: printf ("\t} else {\n");
1515: else
1516: printf ("\t} else if (cnt > 0) {\n");
1.1.1.3 root 1517: printf ("\t\tuae_u32 mask = (%s << (%d - cnt)) & %s;\n",
1.1.1.7 root 1518: bit_mask (curi->size),
1519: bit_size (curi->size) - 1,
1520: bit_mask (curi->size));
1521: printf ("\t\tSET_VFLG ((val & mask) != mask && (val & mask) != 0);\n");
1522: printf ("\t\tval <<= cnt - 1;\n");
1523: printf ("\t\tSET_CFLG ((val & %s) >> %d);\n", cmask (curi->size), bit_size (curi->size) - 1);
1524: duplicate_carry ();
1525: printf ("\t\tval <<= 1;\n");
1526: printf ("\t\tval &= %s;\n", bit_mask (curi->size));
1527: printf ("\t}\n");
1528: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1529: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1530: break;
1.1.1.11 root 1531: case i_LSR:
1.1.1.7 root 1532: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1533: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1534: start_brace ();
1.1.1.7 root 1535: switch (curi->size) {
1.1.1.11 root 1536: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1537: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1538: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1539: default: abort ();
1.1 root 1540: }
1.1.1.3 root 1541: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1542: printf ("\tCLEAR_CZNV;\n");
1543: printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
1544: printf ("\t\tSET_CFLG ((cnt == %d) & (val >> %d));\n",
1545: bit_size (curi->size), bit_size (curi->size) - 1);
1546: duplicate_carry ();
1.1.1.3 root 1547: printf ("\t\tval = 0;\n");
1.1.1.7 root 1548: if (source_is_imm1_8 (curi))
1549: printf ("\t} else {\n");
1550: else
1551: printf ("\t} else if (cnt > 0) {\n");
1552: printf ("\t\tval >>= cnt - 1;\n");
1553: printf ("\t\tSET_CFLG (val & 1);\n");
1554: duplicate_carry ();
1555: printf ("\t\tval >>= 1;\n");
1556: printf ("\t}\n");
1557: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1558: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1559: break;
1.1.1.11 root 1560: case i_LSL:
1.1.1.7 root 1561: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1562: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1563: start_brace ();
1.1.1.7 root 1564: switch (curi->size) {
1.1.1.11 root 1565: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1566: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1567: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1568: default: abort ();
1.1 root 1569: }
1.1.1.3 root 1570: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1571: printf ("\tCLEAR_CZNV;\n");
1572: printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
1573: printf ("\t\tSET_CFLG (cnt == %d ? val & 1 : 0);\n",
1574: bit_size (curi->size));
1575: duplicate_carry ();
1.1.1.3 root 1576: printf ("\t\tval = 0;\n");
1.1.1.7 root 1577: if (source_is_imm1_8 (curi))
1578: printf ("\t} else {\n");
1579: else
1580: printf ("\t} else if (cnt > 0) {\n");
1581: printf ("\t\tval <<= (cnt - 1);\n");
1582: printf ("\t\tSET_CFLG ((val & %s) >> %d);\n", cmask (curi->size), bit_size (curi->size) - 1);
1583: duplicate_carry ();
1584: printf ("\t\tval <<= 1;\n");
1585: printf ("\tval &= %s;\n", bit_mask (curi->size));
1586: printf ("\t}\n");
1587: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1588: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1589: break;
1.1.1.11 root 1590: case i_ROL:
1.1.1.7 root 1591: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1592: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1593: start_brace ();
1.1.1.7 root 1594: switch (curi->size) {
1.1.1.11 root 1595: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1596: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1597: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1598: default: abort ();
1.1 root 1599: }
1.1.1.3 root 1600: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1601: printf ("\tCLEAR_CZNV;\n");
1602: if (source_is_imm1_8 (curi))
1603: printf ("{");
1604: else
1605: printf ("\tif (cnt > 0) {\n");
1606: printf ("\tuae_u32 loval;\n");
1607: printf ("\tcnt &= %d;\n", bit_size (curi->size) - 1);
1608: printf ("\tloval = val >> (%d - cnt);\n", bit_size (curi->size));
1609: printf ("\tval <<= cnt;\n");
1610: printf ("\tval |= loval;\n");
1611: printf ("\tval &= %s;\n", bit_mask (curi->size));
1612: printf ("\tSET_CFLG (val & 1);\n");
1613: printf ("}\n");
1614: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1615: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1616: break;
1.1.1.11 root 1617: case i_ROR:
1.1.1.7 root 1618: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1619: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1620: start_brace ();
1.1.1.7 root 1621: switch (curi->size) {
1.1.1.11 root 1622: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1623: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1624: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1625: default: abort ();
1.1 root 1626: }
1.1.1.3 root 1627: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1628: printf ("\tCLEAR_CZNV;\n");
1629: if (source_is_imm1_8 (curi))
1630: printf ("{");
1631: else
1632: printf ("\tif (cnt > 0) {");
1633: printf ("\tuae_u32 hival;\n");
1634: printf ("\tcnt &= %d;\n", bit_size (curi->size) - 1);
1635: printf ("\thival = val << (%d - cnt);\n", bit_size (curi->size));
1636: printf ("\tval >>= cnt;\n");
1637: printf ("\tval |= hival;\n");
1638: printf ("\tval &= %s;\n", bit_mask (curi->size));
1639: printf ("\tSET_CFLG ((val & %s) >> %d);\n", cmask (curi->size), bit_size (curi->size) - 1);
1.1.1.3 root 1640: printf ("\t}\n");
1.1.1.7 root 1641: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1642: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1643: break;
1.1.1.11 root 1644: case i_ROXL:
1.1.1.7 root 1645: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1646: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1647: start_brace ();
1.1.1.7 root 1648: switch (curi->size) {
1.1.1.11 root 1649: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1650: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1651: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1652: default: abort ();
1.1 root 1653: }
1.1.1.3 root 1654: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1655: printf ("\tCLEAR_CZNV;\n");
1656: if (source_is_imm1_8 (curi))
1657: printf ("{");
1.1.1.12 root 1658: else {
1659: force_range_for_rox ("cnt", curi->size);
1.1.1.7 root 1660: printf ("\tif (cnt > 0) {\n");
1.1.1.12 root 1661: }
1.1.1.7 root 1662: printf ("\tcnt--;\n");
1663: printf ("\t{\n\tuae_u32 carry;\n");
1664: printf ("\tuae_u32 loval = val >> (%d - cnt);\n", bit_size (curi->size) - 1);
1665: printf ("\tcarry = loval & 1;\n");
1666: printf ("\tval = (((val << 1) | GET_XFLG) << cnt) | (loval >> 1);\n");
1667: printf ("\tSET_XFLG (carry);\n");
1668: printf ("\tval &= %s;\n", bit_mask (curi->size));
1669: printf ("\t} }\n");
1670: printf ("\tSET_CFLG (GET_XFLG);\n");
1671: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1672: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1673: break;
1.1.1.11 root 1674: case i_ROXR:
1.1.1.7 root 1675: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1676: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1677: start_brace ();
1.1.1.7 root 1678: switch (curi->size) {
1.1.1.11 root 1679: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1680: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1681: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1682: default: abort ();
1.1 root 1683: }
1.1.1.3 root 1684: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1685: printf ("\tCLEAR_CZNV;\n");
1686: if (source_is_imm1_8 (curi))
1687: printf ("{");
1.1.1.12 root 1688: else {
1689: force_range_for_rox ("cnt", curi->size);
1.1.1.7 root 1690: printf ("\tif (cnt > 0) {\n");
1.1.1.12 root 1691: }
1.1.1.7 root 1692: printf ("\tcnt--;\n");
1693: printf ("\t{\n\tuae_u32 carry;\n");
1694: printf ("\tuae_u32 hival = (val << 1) | GET_XFLG;\n");
1695: printf ("\thival <<= (%d - cnt);\n", bit_size (curi->size) - 1);
1696: printf ("\tval >>= cnt;\n");
1697: printf ("\tcarry = val & 1;\n");
1698: printf ("\tval >>= 1;\n");
1699: printf ("\tval |= hival;\n");
1700: printf ("\tSET_XFLG (carry);\n");
1701: printf ("\tval &= %s;\n", bit_mask (curi->size));
1702: printf ("\t} }\n");
1703: printf ("\tSET_CFLG (GET_XFLG);\n");
1704: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1705: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1706: break;
1.1.1.11 root 1707: case i_ASRW:
1.1.1.7 root 1708: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1709: start_brace ();
1.1.1.7 root 1710: switch (curi->size) {
1.1.1.11 root 1711: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1712: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1713: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1714: default: abort ();
1.1 root 1715: }
1.1.1.7 root 1716: printf ("\tuae_u32 sign = %s & val;\n", cmask (curi->size));
1717: printf ("\tuae_u32 cflg = val & 1;\n");
1718: printf ("\tval = (val >> 1) | sign;\n");
1719: genflags (flag_logical, curi->size, "val", "", "");
1720: printf ("\tSET_CFLG (cflg);\n");
1721: duplicate_carry ();
1722: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1723: break;
1.1.1.11 root 1724: case i_ASLW:
1.1.1.7 root 1725: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1726: start_brace ();
1.1.1.7 root 1727: switch (curi->size) {
1.1.1.11 root 1728: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1729: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1730: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1731: default: abort ();
1.1 root 1732: }
1.1.1.7 root 1733: printf ("\tuae_u32 sign = %s & val;\n", cmask (curi->size));
1734: printf ("\tuae_u32 sign2;\n");
1735: printf ("\tval <<= 1;\n");
1736: genflags (flag_logical, curi->size, "val", "", "");
1737: printf ("\tsign2 = %s & val;\n", cmask (curi->size));
1738: printf ("\tSET_CFLG (sign != 0);\n");
1739: duplicate_carry ();
1740:
1741: printf ("\tSET_VFLG (GET_VFLG | (sign2 != sign));\n");
1742: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1743: break;
1.1.1.11 root 1744: case i_LSRW:
1.1.1.7 root 1745: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1746: start_brace ();
1.1.1.7 root 1747: switch (curi->size) {
1.1.1.11 root 1748: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1749: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1750: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1751: default: abort ();
1.1 root 1752: }
1.1.1.7 root 1753: printf ("\tuae_u32 carry = val & 1;\n");
1.1.1.3 root 1754: printf ("\tval >>= 1;\n");
1.1.1.7 root 1755: genflags (flag_logical, curi->size, "val", "", "");
1756: printf ("SET_CFLG (carry);\n");
1757: duplicate_carry ();
1758: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1759: break;
1.1.1.11 root 1760: case i_LSLW:
1.1.1.7 root 1761: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1762: start_brace ();
1.1.1.7 root 1763: switch (curi->size) {
1.1.1.11 root 1764: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1765: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1766: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1767: default: abort ();
1.1 root 1768: }
1.1.1.7 root 1769: printf ("\tuae_u32 carry = val & %s;\n", cmask (curi->size));
1.1.1.3 root 1770: printf ("\tval <<= 1;\n");
1.1.1.7 root 1771: genflags (flag_logical, curi->size, "val", "", "");
1772: printf ("SET_CFLG (carry >> %d);\n", bit_size (curi->size) - 1);
1773: duplicate_carry ();
1774: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1775: break;
1.1.1.11 root 1776: case i_ROLW:
1.1.1.7 root 1777: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1778: start_brace ();
1.1.1.7 root 1779: switch (curi->size) {
1.1.1.11 root 1780: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1781: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1782: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1783: default: abort ();
1.1 root 1784: }
1.1.1.7 root 1785: printf ("\tuae_u32 carry = val & %s;\n", cmask (curi->size));
1.1.1.3 root 1786: printf ("\tval <<= 1;\n");
1.1.1.7 root 1787: printf ("\tif (carry) val |= 1;\n");
1788: genflags (flag_logical, curi->size, "val", "", "");
1789: printf ("SET_CFLG (carry >> %d);\n", bit_size (curi->size) - 1);
1790: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1791: break;
1.1.1.11 root 1792: case i_RORW:
1.1.1.7 root 1793: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1794: start_brace ();
1.1.1.7 root 1795: switch (curi->size) {
1.1.1.11 root 1796: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1797: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1798: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1799: default: abort ();
1.1 root 1800: }
1.1.1.7 root 1801: printf ("\tuae_u32 carry = val & 1;\n");
1.1.1.3 root 1802: printf ("\tval >>= 1;\n");
1.1.1.7 root 1803: printf ("\tif (carry) val |= %s;\n", cmask (curi->size));
1804: genflags (flag_logical, curi->size, "val", "", "");
1805: printf ("SET_CFLG (carry);\n");
1806: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1807: break;
1.1.1.11 root 1808: case i_ROXLW:
1.1.1.7 root 1809: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1810: start_brace ();
1.1.1.7 root 1811: switch (curi->size) {
1.1.1.11 root 1812: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1813: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1814: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1815: default: abort ();
1.1 root 1816: }
1.1.1.7 root 1817: printf ("\tuae_u32 carry = val & %s;\n", cmask (curi->size));
1.1.1.3 root 1818: printf ("\tval <<= 1;\n");
1.1.1.7 root 1819: printf ("\tif (GET_XFLG) val |= 1;\n");
1820: genflags (flag_logical, curi->size, "val", "", "");
1821: printf ("SET_CFLG (carry >> %d);\n", bit_size (curi->size) - 1);
1822: duplicate_carry ();
1823: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1824: break;
1.1.1.11 root 1825: case i_ROXRW:
1.1.1.7 root 1826: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1827: start_brace ();
1.1.1.7 root 1828: switch (curi->size) {
1.1.1.11 root 1829: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1830: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1831: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1832: default: abort ();
1.1 root 1833: }
1.1.1.7 root 1834: printf ("\tuae_u32 carry = val & 1;\n");
1.1.1.3 root 1835: printf ("\tval >>= 1;\n");
1.1.1.7 root 1836: printf ("\tif (GET_XFLG) val |= %s;\n", cmask (curi->size));
1837: genflags (flag_logical, curi->size, "val", "", "");
1838: printf ("SET_CFLG (carry);\n");
1839: duplicate_carry ();
1840: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1841: break;
1.1.1.11 root 1842: case i_MOVEC2:
1.1.1.7 root 1843: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.5 root 1844: start_brace ();
1.1.1.3 root 1845: printf ("\tint regno = (src >> 12) & 15;\n");
1846: printf ("\tuae_u32 *regp = regs.regs + regno;\n");
1.1.1.9 root 1847: printf ("\tif (! m68k_movec2(src & 0xFFF, regp)) goto %s;\n", endlabelstr);
1.1 root 1848: break;
1.1.1.11 root 1849: case i_MOVE2C:
1.1.1.7 root 1850: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.5 root 1851: start_brace ();
1.1.1.3 root 1852: printf ("\tint regno = (src >> 12) & 15;\n");
1853: printf ("\tuae_u32 *regp = regs.regs + regno;\n");
1.1.1.9 root 1854: printf ("\tif (! m68k_move2c(src & 0xFFF, regp)) goto %s;\n", endlabelstr);
1.1 root 1855: break;
1.1.1.11 root 1856: case i_CAS:
1857: {
1858: int old_brace_level;
1859: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1860: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1861: start_brace ();
1862: printf ("\tint ru = (src >> 6) & 7;\n");
1863: printf ("\tint rc = src & 7;\n");
1864: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, rc)", "dst");
1865: printf ("\tif (GET_ZFLG)");
1866: old_brace_level = n_braces;
1867: start_brace ();
1868: genastore ("(m68k_dreg(regs, ru))", curi->dmode, "dstreg", curi->size, "dst");
1869: pop_braces (old_brace_level);
1870: printf ("else");
1871: start_brace ();
1872: printf ("m68k_dreg(regs, rc) = dst;\n");
1873: pop_braces (old_brace_level);
1874: }
1875: break;
1876: case i_CAS2:
1.1.1.7 root 1877: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.8 root 1878: printf ("\tuae_u32 rn1 = regs.regs[(extra >> 28) & 15];\n");
1879: printf ("\tuae_u32 rn2 = regs.regs[(extra >> 12) & 15];\n");
1.1.1.7 root 1880: if (curi->size == sz_word) {
1.1.1.5 root 1881: int old_brace_level = n_braces;
1882: printf ("\tuae_u16 dst1 = get_word(rn1), dst2 = get_word(rn2);\n");
1.1.1.7 root 1883: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, (extra >> 16) & 7)", "dst1");
1884: printf ("\tif (GET_ZFLG) {\n");
1885: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, extra & 7)", "dst2");
1886: printf ("\tif (GET_ZFLG) {\n");
1.1.1.5 root 1887: printf ("\tput_word(rn1, m68k_dreg(regs, (extra >> 22) & 7));\n");
1888: printf ("\tput_word(rn1, m68k_dreg(regs, (extra >> 6) & 7));\n");
1889: printf ("\t}}\n");
1890: pop_braces (old_brace_level);
1.1.1.7 root 1891: printf ("\tif (! GET_ZFLG) {\n");
1.1.1.5 root 1892: printf ("\tm68k_dreg(regs, (extra >> 22) & 7) = (m68k_dreg(regs, (extra >> 22) & 7) & ~0xffff) | (dst1 & 0xffff);\n");
1893: printf ("\tm68k_dreg(regs, (extra >> 6) & 7) = (m68k_dreg(regs, (extra >> 6) & 7) & ~0xffff) | (dst2 & 0xffff);\n");
1894: printf ("\t}\n");
1.1 root 1895: } else {
1.1.1.5 root 1896: int old_brace_level = n_braces;
1897: printf ("\tuae_u32 dst1 = get_long(rn1), dst2 = get_long(rn2);\n");
1.1.1.7 root 1898: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, (extra >> 16) & 7)", "dst1");
1899: printf ("\tif (GET_ZFLG) {\n");
1900: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, extra & 7)", "dst2");
1901: printf ("\tif (GET_ZFLG) {\n");
1.1.1.5 root 1902: printf ("\tput_long(rn1, m68k_dreg(regs, (extra >> 22) & 7));\n");
1903: printf ("\tput_long(rn1, m68k_dreg(regs, (extra >> 6) & 7));\n");
1904: printf ("\t}}\n");
1905: pop_braces (old_brace_level);
1.1.1.7 root 1906: printf ("\tif (! GET_ZFLG) {\n");
1.1.1.5 root 1907: printf ("\tm68k_dreg(regs, (extra >> 22) & 7) = dst1;\n");
1908: printf ("\tm68k_dreg(regs, (extra >> 6) & 7) = dst2;\n");
1909: printf ("\t}\n");
1.1 root 1910: }
1911: break;
1.1.1.11 root 1912: case i_MOVES: /* ignore DFC and SFC because we have no MMU */
1913: {
1914: int old_brace_level;
1915: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1916: printf ("\tif (extra & 0x800)\n");
1917: old_brace_level = n_braces;
1918: start_brace ();
1919: printf ("\tuae_u32 src = regs.regs[(extra >> 12) & 15];\n");
1920: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1921: genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
1922: pop_braces (old_brace_level);
1923: printf ("else");
1924: start_brace ();
1925: genamode (curi->dmode, "dstreg", curi->size, "src", 1, 0);
1926: printf ("\tif (extra & 0x8000) {\n");
1927: switch (curi->size) {
1928: case sz_byte: printf ("\tm68k_areg(regs, (extra >> 12) & 7) = (uae_s32)(uae_s8)src;\n"); break;
1929: case sz_word: printf ("\tm68k_areg(regs, (extra >> 12) & 7) = (uae_s32)(uae_s16)src;\n"); break;
1930: case sz_long: printf ("\tm68k_areg(regs, (extra >> 12) & 7) = src;\n"); break;
1931: default: abort ();
1.1 root 1932: }
1.1.1.11 root 1933: printf ("\t} else {\n");
1934: genastore ("src", Dreg, "(extra >> 12) & 7", curi->size, "");
1935: printf ("\t}\n");
1936: pop_braces (old_brace_level);
1937: }
1938: break;
1939: case i_BKPT: /* only needed for hardware emulators */
1.1.1.5 root 1940: sync_m68k_pc ();
1.1.1.3 root 1941: printf ("\top_illg(opcode);\n");
1.1 root 1942: break;
1.1.1.11 root 1943: case i_CALLM: /* not present in 68030 */
1.1.1.5 root 1944: sync_m68k_pc ();
1.1.1.3 root 1945: printf ("\top_illg(opcode);\n");
1.1 root 1946: break;
1.1.1.11 root 1947: case i_RTM: /* not present in 68030 */
1.1.1.5 root 1948: sync_m68k_pc ();
1.1.1.3 root 1949: printf ("\top_illg(opcode);\n");
1.1 root 1950: break;
1.1.1.11 root 1951: case i_TRAPcc:
1.1.1.7 root 1952: if (curi->smode != am_unknown && curi->smode != am_illg)
1953: genamode (curi->smode, "srcreg", curi->size, "dummy", 1, 0);
1954: printf ("\tif (cctrue(%d)) { Exception(7,m68k_getpc()); goto %s; }\n", curi->cc, endlabelstr);
1.1.1.5 root 1955: need_endlabel = 1;
1.1 root 1956: break;
1.1.1.11 root 1957: case i_DIVL:
1.1.1.3 root 1958: sync_m68k_pc ();
1959: start_brace ();
1960: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1961: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1962: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1.1.5 root 1963: sync_m68k_pc ();
1.1.1.3 root 1964: printf ("\tm68k_divl(opcode, dst, extra, oldpc);\n");
1.1 root 1965: break;
1.1.1.11 root 1966: case i_MULL:
1.1.1.7 root 1967: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1968: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1.1.5 root 1969: sync_m68k_pc ();
1.1.1.3 root 1970: printf ("\tm68k_mull(opcode, dst, extra);\n");
1.1 root 1971: break;
1.1.1.11 root 1972: case i_BFTST:
1973: case i_BFEXTU:
1974: case i_BFCHG:
1975: case i_BFEXTS:
1976: case i_BFCLR:
1977: case i_BFFFO:
1978: case i_BFSET:
1979: case i_BFINS:
1.1.1.7 root 1980: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1981: genamode (curi->dmode, "dstreg", sz_long, "dst", 2, 0);
1.1.1.5 root 1982: start_brace ();
1.1.1.3 root 1983: printf ("\tuae_s32 offset = extra & 0x800 ? m68k_dreg(regs, (extra >> 6) & 7) : (extra >> 6) & 0x1f;\n");
1984: printf ("\tint width = (((extra & 0x20 ? m68k_dreg(regs, extra & 7) : extra) -1) & 0x1f) +1;\n");
1.1.1.7 root 1985: if (curi->dmode == Dreg) {
1.1.1.3 root 1986: printf ("\tuae_u32 tmp = m68k_dreg(regs, dstreg) << (offset & 0x1f);\n");
1987: } else {
1988: printf ("\tuae_u32 tmp,bf0,bf1;\n");
1989: printf ("\tdsta += (offset >> 3) | (offset & 0x80000000 ? ~0x1fffffff : 0);\n");
1990: printf ("\tbf0 = get_long(dsta);bf1 = get_byte(dsta+4) & 0xff;\n");
1991: printf ("\ttmp = (bf0 << (offset & 7)) | (bf1 >> (8 - (offset & 7)));\n");
1992: }
1993: printf ("\ttmp >>= (32 - width);\n");
1.1.1.7 root 1994: printf ("\tSET_NFLG (tmp & (1 << (width-1)) ? 1 : 0);\n");
1995: printf ("\tSET_ZFLG (tmp == 0); SET_VFLG (0); SET_CFLG (0);\n");
1996: switch (curi->mnemo) {
1.1.1.11 root 1997: case i_BFTST:
1.1.1.3 root 1998: break;
1.1.1.11 root 1999: case i_BFEXTU:
1.1.1.3 root 2000: printf ("\tm68k_dreg(regs, (extra >> 12) & 7) = tmp;\n");
2001: break;
1.1.1.11 root 2002: case i_BFCHG:
1.1.1.3 root 2003: printf ("\ttmp = ~tmp;\n");
2004: break;
1.1.1.11 root 2005: case i_BFEXTS:
1.1.1.7 root 2006: printf ("\tif (GET_NFLG) tmp |= width == 32 ? 0 : (-1 << width);\n");
1.1.1.3 root 2007: printf ("\tm68k_dreg(regs, (extra >> 12) & 7) = tmp;\n");
2008: break;
1.1.1.11 root 2009: case i_BFCLR:
1.1.1.3 root 2010: printf ("\ttmp = 0;\n");
2011: break;
1.1.1.11 root 2012: case i_BFFFO:
1.1.1.3 root 2013: printf ("\t{ uae_u32 mask = 1 << (width-1);\n");
2014: printf ("\twhile (mask) { if (tmp & mask) break; mask >>= 1; offset++; }}\n");
2015: printf ("\tm68k_dreg(regs, (extra >> 12) & 7) = offset;\n");
2016: break;
1.1.1.11 root 2017: case i_BFSET:
1.1.1.3 root 2018: printf ("\ttmp = 0xffffffff;\n");
2019: break;
1.1.1.11 root 2020: case i_BFINS:
1.1.1.3 root 2021: printf ("\ttmp = m68k_dreg(regs, (extra >> 12) & 7);\n");
1.1.1.15! root 2022: printf ("\tSET_NFLG (tmp & (1 << (width - 1)) ? 1 : 0);\n");
! 2023: printf ("\tSET_ZFLG (tmp == 0);\n");
1.1.1.3 root 2024: break;
1.1.1.11 root 2025: default:
1.1.1.3 root 2026: break;
1.1 root 2027: }
1.1.1.7 root 2028: if (curi->mnemo == i_BFCHG
2029: || curi->mnemo == i_BFCLR
2030: || curi->mnemo == i_BFSET
2031: || curi->mnemo == i_BFINS)
1.1.1.11 root 2032: {
2033: printf ("\ttmp <<= (32 - width);\n");
2034: if (curi->dmode == Dreg) {
2035: printf ("\tm68k_dreg(regs, dstreg) = (m68k_dreg(regs, dstreg) & ((offset & 0x1f) == 0 ? 0 :\n");
2036: printf ("\t\t(0xffffffff << (32 - (offset & 0x1f))))) |\n");
2037: printf ("\t\t(tmp >> (offset & 0x1f)) |\n");
2038: printf ("\t\t(((offset & 0x1f) + width) >= 32 ? 0 :\n");
2039: printf (" (m68k_dreg(regs, dstreg) & ((uae_u32)0xffffffff >> ((offset & 0x1f) + width))));\n");
2040: } else {
2041: printf ("\tbf0 = (bf0 & (0xff000000 << (8 - (offset & 7)))) |\n");
2042: printf ("\t\t(tmp >> (offset & 7)) |\n");
2043: printf ("\t\t(((offset & 7) + width) >= 32 ? 0 :\n");
2044: printf ("\t\t (bf0 & ((uae_u32)0xffffffff >> ((offset & 7) + width))));\n");
2045: printf ("\tput_long(dsta,bf0 );\n");
2046: printf ("\tif (((offset & 7) + width) > 32) {\n");
2047: printf ("\t\tbf1 = (bf1 & (0xff >> (width - 32 + (offset & 7)))) |\n");
2048: printf ("\t\t\t(tmp << (8 - (offset & 7)));\n");
2049: printf ("\t\tput_byte(dsta+4,bf1);\n");
2050: printf ("\t}\n");
2051: }
1.1.1.5 root 2052: }
1.1 root 2053: break;
1.1.1.11 root 2054: case i_PACK:
1.1.1.7 root 2055: if (curi->smode == Dreg) {
1.1.1.5 root 2056: printf ("\tuae_u16 val = m68k_dreg(regs, srcreg) + %s;\n", gen_nextiword ());
1.1.1.3 root 2057: printf ("\tm68k_dreg(regs, dstreg) = (m68k_dreg(regs, dstreg) & 0xffffff00) | ((val >> 4) & 0xf0) | (val & 0xf);\n");
2058: } else {
2059: printf ("\tuae_u16 val;\n");
2060: printf ("\tm68k_areg(regs, srcreg) -= areg_byteinc[srcreg];\n");
2061: printf ("\tval = (uae_u16)get_byte(m68k_areg(regs, srcreg));\n");
2062: printf ("\tm68k_areg(regs, srcreg) -= areg_byteinc[srcreg];\n");
1.1.1.5 root 2063: printf ("\tval = (val | ((uae_u16)get_byte(m68k_areg(regs, srcreg)) << 8)) + %s;\n", gen_nextiword ());
1.1.1.3 root 2064: printf ("\tm68k_areg(regs, dstreg) -= areg_byteinc[dstreg];\n");
2065: printf ("\tput_byte(m68k_areg(regs, dstreg),((val >> 4) & 0xf0) | (val & 0xf));\n");
1.1 root 2066: }
2067: break;
1.1.1.11 root 2068: case i_UNPK:
1.1.1.7 root 2069: if (curi->smode == Dreg) {
1.1.1.3 root 2070: printf ("\tuae_u16 val = m68k_dreg(regs, srcreg);\n");
1.1.1.5 root 2071: printf ("\tval = (((val << 4) & 0xf00) | (val & 0xf)) + %s;\n", gen_nextiword ());
1.1.1.3 root 2072: printf ("\tm68k_dreg(regs, dstreg) = (m68k_dreg(regs, dstreg) & 0xffff0000) | (val & 0xffff);\n");
2073: } else {
2074: printf ("\tuae_u16 val;\n");
2075: printf ("\tm68k_areg(regs, srcreg) -= areg_byteinc[srcreg];\n");
2076: printf ("\tval = (uae_u16)get_byte(m68k_areg(regs, srcreg));\n");
1.1.1.5 root 2077: printf ("\tval = (((val << 4) & 0xf00) | (val & 0xf)) + %s;\n", gen_nextiword ());
1.1.1.3 root 2078: printf ("\tm68k_areg(regs, dstreg) -= areg_byteinc[dstreg];\n");
2079: printf ("\tput_byte(m68k_areg(regs, dstreg),val);\n");
2080: printf ("\tm68k_areg(regs, dstreg) -= areg_byteinc[dstreg];\n");
2081: printf ("\tput_byte(m68k_areg(regs, dstreg),val >> 8);\n");
1.1 root 2082: }
2083: break;
1.1.1.11 root 2084: case i_TAS:
1.1.1.7 root 2085: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
2086: genflags (flag_logical, curi->size, "src", "", "");
1.1.1.3 root 2087: printf ("\tsrc |= 0x80;\n");
1.1.1.7 root 2088: genastore ("src", curi->smode, "srcreg", curi->size, "src");
1.1 root 2089: break;
1.1.1.11 root 2090: case i_FPP:
1.1.1.7 root 2091: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.5 root 2092: sync_m68k_pc ();
1.1.1.3 root 2093: printf ("\tfpp_opp(opcode,extra);\n");
1.1 root 2094: break;
1.1.1.11 root 2095: case i_FDBcc:
1.1.1.7 root 2096: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.5 root 2097: sync_m68k_pc ();
1.1.1.3 root 2098: printf ("\tfdbcc_opp(opcode,extra);\n");
1.1 root 2099: break;
1.1.1.11 root 2100: case i_FScc:
1.1.1.7 root 2101: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.5 root 2102: sync_m68k_pc ();
1.1.1.3 root 2103: printf ("\tfscc_opp(opcode,extra);\n");
1.1 root 2104: break;
1.1.1.11 root 2105: case i_FTRAPcc:
1.1.1.5 root 2106: sync_m68k_pc ();
2107: start_brace ();
1.1.1.3 root 2108: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 2109: if (curi->smode != am_unknown && curi->smode != am_illg)
2110: genamode (curi->smode, "srcreg", curi->size, "dummy", 1, 0);
1.1.1.5 root 2111: sync_m68k_pc ();
1.1.1.3 root 2112: printf ("\tftrapcc_opp(opcode,oldpc);\n");
1.1 root 2113: break;
1.1.1.11 root 2114: case i_FBcc:
1.1.1.5 root 2115: sync_m68k_pc ();
2116: start_brace ();
1.1.1.3 root 2117: printf ("\tuaecptr pc = m68k_getpc();\n");
1.1.1.7 root 2118: genamode (curi->dmode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.5 root 2119: sync_m68k_pc ();
1.1.1.3 root 2120: printf ("\tfbcc_opp(opcode,pc,extra);\n");
1.1 root 2121: break;
1.1.1.11 root 2122: case i_FSAVE:
1.1.1.5 root 2123: sync_m68k_pc ();
1.1.1.3 root 2124: printf ("\tfsave_opp(opcode);\n");
1.1 root 2125: break;
1.1.1.11 root 2126: case i_FRESTORE:
1.1.1.5 root 2127: sync_m68k_pc ();
1.1.1.3 root 2128: printf ("\tfrestore_opp(opcode);\n");
1.1 root 2129: break;
1.1.1.12 root 2130:
2131: case i_CINVL:
2132: case i_CINVP:
2133: case i_CINVA:
2134: case i_CPUSHL:
2135: case i_CPUSHP:
2136: case i_CPUSHA:
2137: break;
2138: case i_MOVE16:
1.1.1.14 root 2139: if ((opcode & 0xfff8) == 0xf620) {
2140: /* MOVE16 (Ax)+,(Ay)+ */
2141: printf ("\tuaecptr mems = m68k_areg(regs, srcreg) & ~15, memd;\n");
2142: printf ("\tdstreg = (%s >> 12) & 7;\n", gen_nextiword());
2143: printf ("\tmemd = m68k_areg(regs, dstreg) & ~15;\n");
2144: printf ("\tput_long(memd, get_long(mems));\n");
2145: printf ("\tput_long(memd+4, get_long(mems+4));\n");
2146: printf ("\tput_long(memd+8, get_long(mems+8));\n");
2147: printf ("\tput_long(memd+12, get_long(mems+12));\n");
2148: printf ("\tif (srcreg != dstreg)\n");
2149: printf ("\tm68k_areg(regs, srcreg) += 16;\n");
2150: printf ("\tm68k_areg(regs, dstreg) += 16;\n");
2151: } else {
2152: /* Other variants */
2153: genamode (curi->smode, "srcreg", curi->size, "mems", 0, 2);
2154: genamode (curi->dmode, "dstreg", curi->size, "memd", 0, 2);
2155: printf ("\tmemsa &= ~15;\n");
2156: printf ("\tmemda &= ~15;\n");
2157: printf ("\tput_long(memda, get_long(memsa));\n");
2158: printf ("\tput_long(memda+4, get_long(memsa+4));\n");
2159: printf ("\tput_long(memda+8, get_long(memsa+8));\n");
2160: printf ("\tput_long(memda+12, get_long(memsa+12));\n");
2161: if ((opcode & 0xfff8) == 0xf600)
2162: printf ("\tm68k_areg(regs, srcreg) += 16;\n");
2163: else if ((opcode & 0xfff8) == 0xf608)
2164: printf ("\tm68k_areg(regs, dstreg) += 16;\n");
2165: }
2166: break;
1.1.1.12 root 2167:
1.1.1.11 root 2168: case i_MMUOP:
1.1.1.7 root 2169: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.5 root 2170: sync_m68k_pc ();
1.1.1.3 root 2171: printf ("\tmmu_op(opcode,extra);\n");
1.1 root 2172: break;
1.1.1.11 root 2173: default:
1.1.1.5 root 2174: abort ();
1.1 root 2175: break;
1.1.1.5 root 2176: }
1.1 root 2177: finish_braces ();
1.1.1.3 root 2178: sync_m68k_pc ();
1.1 root 2179: }
2180:
1.1.1.5 root 2181: static void generate_includes (FILE * f)
1.1.1.3 root 2182: {
2183: fprintf (f, "#include \"sysconfig.h\"\n");
2184: fprintf (f, "#include \"sysdeps.h\"\n");
2185: fprintf (f, "#include \"config.h\"\n");
2186: fprintf (f, "#include \"options.h\"\n");
2187: fprintf (f, "#include \"memory.h\"\n");
2188: fprintf (f, "#include \"custom.h\"\n");
2189: fprintf (f, "#include \"newcpu.h\"\n");
2190: fprintf (f, "#include \"compiler.h\"\n");
2191: fprintf (f, "#include \"cputbl.h\"\n");
1.1.1.12 root 2192:
2193: fprintf (f, "#define CPUFUNC(x) x##_ff\n"
2194: "#ifdef NOFLAGS\n"
2195: "#include \"noflags.h\"\n"
2196: "#endif\n");
1.1.1.3 root 2197: }
2198:
2199: static int postfix;
2200:
2201: static void generate_one_opcode (int rp)
1.1 root 2202: {
2203: int i;
1.1.1.3 root 2204: uae_u16 smsk, dmsk;
2205: long int opcode = opcode_map[rp];
1.1 root 2206:
1.1.1.3 root 2207: if (table68k[opcode].mnemo == i_ILLG
2208: || table68k[opcode].clev > cpu_level)
2209: return;
1.1 root 2210:
1.1.1.5 root 2211: for (i = 0; lookuptab[i].name[0]; i++) {
1.1.1.3 root 2212: if (table68k[opcode].mnemo == lookuptab[i].mnemo)
2213: break;
2214: }
1.1 root 2215:
1.1.1.3 root 2216: if (table68k[opcode].handler != -1)
2217: return;
1.1 root 2218:
1.1.1.3 root 2219: if (opcode_next_clev[rp] != cpu_level) {
1.1.1.12 root 2220: fprintf (stblfile, "{ CPUFUNC(op_%lx_%d), 0, %ld }, /* %s */\n", opcode, opcode_last_postfix[rp],
1.1.1.3 root 2221: opcode, lookuptab[i].name);
2222: return;
2223: }
1.1.1.12 root 2224: fprintf (stblfile, "{ CPUFUNC(op_%lx_%d), 0, %ld }, /* %s */\n", opcode, postfix, opcode, lookuptab[i].name);
2225: fprintf (headerfile, "extern cpuop_func op_%lx_%d_nf;\n", opcode, postfix);
2226: fprintf (headerfile, "extern cpuop_func op_%lx_%d_ff;\n", opcode, postfix);
2227: printf ("unsigned long REGPARAM2 CPUFUNC(op_%lx_%d)(uae_u32 opcode) /* %s */\n{\n", opcode, postfix, lookuptab[i].name);
1.1.1.3 root 2228:
2229: switch (table68k[opcode].stype) {
1.1.1.14 root 2230: case 0: smsk = 7; break;
2231: case 1: smsk = 255; break;
2232: case 2: smsk = 15; break;
2233: case 3: smsk = 7; break;
2234: case 4: smsk = 7; break;
2235: case 5: smsk = 63; break;
2236: case 7: smsk = 3; break;
2237: default: abort ();
1.1.1.3 root 2238: }
2239: dmsk = 7;
2240:
2241: next_cpu_level = -1;
2242: if (table68k[opcode].suse
1.1.1.5 root 2243: && table68k[opcode].smode != imm && table68k[opcode].smode != imm0
1.1.1.3 root 2244: && table68k[opcode].smode != imm1 && table68k[opcode].smode != imm2
2245: && table68k[opcode].smode != absw && table68k[opcode].smode != absl
2246: && table68k[opcode].smode != PC8r && table68k[opcode].smode != PC16)
2247: {
2248: if (table68k[opcode].spos == -1) {
1.1.1.5 root 2249: if (((int) table68k[opcode].sreg) >= 128)
2250: printf ("\tuae_u32 srcreg = (uae_s32)(uae_s8)%d;\n", (int) table68k[opcode].sreg);
1.1.1.3 root 2251: else
1.1.1.5 root 2252: printf ("\tuae_u32 srcreg = %d;\n", (int) table68k[opcode].sreg);
1.1.1.3 root 2253: } else {
2254: char source[100];
1.1.1.6 root 2255: int pos = table68k[opcode].spos;
1.1.1.5 root 2256:
1.1.1.6 root 2257: if (pos)
2258: sprintf (source, "((opcode >> %d) & %d)", pos, smsk);
1.1.1.3 root 2259: else
1.1.1.5 root 2260: sprintf (source, "(opcode & %d)", smsk);
2261:
1.1.1.3 root 2262: if (table68k[opcode].stype == 3)
2263: printf ("\tuae_u32 srcreg = imm8_table[%s];\n", source);
2264: else if (table68k[opcode].stype == 1)
2265: printf ("\tuae_u32 srcreg = (uae_s32)(uae_s8)%s;\n", source);
2266: else
2267: printf ("\tuae_u32 srcreg = %s;\n", source);
1.1 root 2268: }
1.1.1.3 root 2269: }
2270: if (table68k[opcode].duse
2271: /* Yes, the dmode can be imm, in case of LINK or DBcc */
1.1.1.5 root 2272: && table68k[opcode].dmode != imm && table68k[opcode].dmode != imm0
1.1.1.3 root 2273: && table68k[opcode].dmode != imm1 && table68k[opcode].dmode != imm2
1.1.1.5 root 2274: && table68k[opcode].dmode != absw && table68k[opcode].dmode != absl)
2275: {
1.1.1.3 root 2276: if (table68k[opcode].dpos == -1) {
1.1.1.5 root 2277: if (((int) table68k[opcode].dreg) >= 128)
2278: printf ("\tuae_u32 dstreg = (uae_s32)(uae_s8)%d;\n", (int) table68k[opcode].dreg);
1.1.1.3 root 2279: else
1.1.1.5 root 2280: printf ("\tuae_u32 dstreg = %d;\n", (int) table68k[opcode].dreg);
1.1.1.3 root 2281: } else {
1.1.1.5 root 2282: int pos = table68k[opcode].dpos;
1.1.1.6 root 2283: #if 0
1.1.1.5 root 2284: /* Check that we can do the little endian optimization safely. */
1.1.1.6 root 2285: if (pos < 8 && (dmsk >> (8 - pos)) != 0)
1.1.1.5 root 2286: abort ();
1.1.1.6 root 2287: #endif
1.1.1.5 root 2288: if (pos)
1.1.1.3 root 2289: printf ("\tuae_u32 dstreg = (opcode >> %d) & %d;\n",
1.1.1.5 root 2290: pos, dmsk);
1.1.1.3 root 2291: else
2292: printf ("\tuae_u32 dstreg = opcode & %d;\n", dmsk);
1.1 root 2293: }
2294: }
1.1.1.5 root 2295: need_endlabel = 0;
1.1.1.3 root 2296: endlabelno++;
2297: sprintf (endlabelstr, "endlabel%d", endlabelno);
2298: gen_opcode (opcode);
1.1.1.5 root 2299: if (need_endlabel)
1.1.1.6 root 2300: printf ("%s: ;\n", endlabelstr);
1.1.1.13 root 2301: printf ("return %d;\n", insn_n_cycles * CYCLE_UNIT / 2);
1.1.1.3 root 2302: printf ("}\n");
2303: opcode_next_clev[rp] = next_cpu_level;
2304: opcode_last_postfix[rp] = postfix;
1.1 root 2305: }
2306:
1.1.1.3 root 2307: static void generate_func (void)
1.1 root 2308: {
1.1.1.5 root 2309: int i, j, rp;
1.1 root 2310:
1.1.1.3 root 2311: using_prefetch = 0;
2312: using_exception_3 = 0;
1.1.1.12 root 2313: for (i = 0; i < 6; i++) {
2314: cpu_level = 4 - i;
2315: if (i == 5) {
1.1.1.3 root 2316: cpu_level = 0;
2317: using_prefetch = 1;
2318: using_exception_3 = 1;
2319: for (rp = 0; rp < nr_cpuop_funcs; rp++)
2320: opcode_next_clev[rp] = 0;
2321: }
1.1.1.12 root 2322:
1.1.1.3 root 2323: postfix = i;
1.1.1.12 root 2324: fprintf (stblfile, "struct cputbl CPUFUNC(op_smalltbl_%d)[] = {\n", postfix);
1.1.1.3 root 2325:
1.1.1.5 root 2326: /* sam: this is for people with low memory (eg. me :)) */
2327: printf ("\n"
2328: "#if !defined(PART_1) && !defined(PART_2) && "
2329: "!defined(PART_3) && !defined(PART_4) && "
2330: "!defined(PART_5) && !defined(PART_6) && "
2331: "!defined(PART_7) && !defined(PART_8)"
2332: "\n"
2333: "#define PART_1 1\n"
2334: "#define PART_2 1\n"
2335: "#define PART_3 1\n"
2336: "#define PART_4 1\n"
2337: "#define PART_5 1\n"
2338: "#define PART_6 1\n"
2339: "#define PART_7 1\n"
2340: "#define PART_8 1\n"
2341: "#endif\n\n");
2342:
2343: rp = 0;
2344: for(j=1;j<=8;++j) {
2345: int k = (j*nr_cpuop_funcs)/8;
2346: printf ("#ifdef PART_%d\n",j);
2347: for (; rp < k; rp++)
2348: generate_one_opcode (rp);
2349: printf ("#endif\n\n");
2350: }
2351:
1.1.1.3 root 2352: fprintf (stblfile, "{ 0, 0, 0 }};\n");
1.1 root 2353: }
2354:
2355: }
2356:
1.1.1.3 root 2357: int main (int argc, char **argv)
1.1.1.5 root 2358: {
1.1 root 2359: read_table68k ();
2360: do_merges ();
1.1.1.3 root 2361:
1.1.1.5 root 2362: opcode_map = (int *) xmalloc (sizeof (int) * nr_cpuop_funcs);
2363: opcode_last_postfix = (int *) xmalloc (sizeof (int) * nr_cpuop_funcs);
2364: opcode_next_clev = (int *) xmalloc (sizeof (int) * nr_cpuop_funcs);
2365: counts = (unsigned long *) xmalloc (65536 * sizeof (unsigned long));
2366: read_counts ();
1.1.1.3 root 2367:
2368: /* It would be a lot nicer to put all in one file (we'd also get rid of
2369: * cputbl.h that way), but cpuopti can't cope. That could be fixed, but
2370: * I don't dare to touch the 68k version. */
1.1.1.5 root 2371:
1.1.1.3 root 2372: headerfile = fopen ("cputbl.h", "wb");
2373: stblfile = fopen ("cpustbl.c", "wb");
2374: freopen ("cpuemu.c", "wb", stdout);
2375:
2376: generate_includes (stdout);
2377: generate_includes (stblfile);
2378:
2379: generate_func ();
2380:
2381: free (table68k);
1.1 root 2382: return 0;
2383: }
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