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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 "config.h"
26: #include "options.h"
27: #include "readcpu.h"
28:
29: #define BOOL_TYPE "int"
30:
1.1.1.3 root 31: static FILE *headerfile;
32: static FILE *stblfile;
33:
34: static int using_prefetch;
35: static int using_exception_3;
36: static int cpu_level;
37:
38: /* For the current opcode, the next lower level that will have different code.
39: * Initialized to -1 for each opcode. If it remains unchanged, indicates we
40: * are done with that opcode. */
41: static int next_cpu_level;
1.1 root 42:
1.1.1.5 root 43: void write_log (const char *s, ...)
1.1 root 44: {
1.1.1.3 root 45: fprintf (stderr, "%s", s);
1.1 root 46: }
47:
1.1.1.3 root 48: static int *opcode_map;
49: static int *opcode_next_clev;
50: static int *opcode_last_postfix;
51: static unsigned long *counts;
52:
1.1.1.5 root 53: static void read_counts (void)
1.1 root 54: {
55: FILE *file;
1.1.1.5 root 56: unsigned long opcode, count, total;
1.1 root 57: char name[20];
1.1.1.5 root 58: int nr = 0;
1.1.1.3 root 59: memset (counts, 0, 65536 * sizeof *counts);
1.1 root 60:
1.1.1.3 root 61: file = fopen ("frequent.68k", "r");
62: if (file) {
63: fscanf (file, "Total: %lu\n", &total);
1.1.1.5 root 64: while (fscanf (file, "%lx: %lu %s\n", &opcode, &count, name) == 3) {
1.1.1.12 root 65: opcode_next_clev[nr] = 4;
1.1.1.3 root 66: opcode_last_postfix[nr] = -1;
67: opcode_map[nr++] = opcode;
68: counts[opcode] = count;
69: }
70: fclose (file);
71: }
72: if (nr == nr_cpuop_funcs)
73: return;
74: for (opcode = 0; opcode < 0x10000; opcode++) {
75: if (table68k[opcode].handler == -1 && table68k[opcode].mnemo != i_ILLG
76: && counts[opcode] == 0)
1.1 root 77: {
1.1.1.12 root 78: opcode_next_clev[nr] = 4;
1.1.1.3 root 79: opcode_last_postfix[nr] = -1;
80: opcode_map[nr++] = opcode;
81: counts[opcode] = count;
1.1 root 82: }
83: }
1.1.1.3 root 84: if (nr != nr_cpuop_funcs)
85: abort ();
1.1 root 86: }
87:
1.1.1.3 root 88: static char endlabelstr[80];
89: static int endlabelno = 0;
1.1.1.5 root 90: static int need_endlabel;
1.1 root 91:
92: static int n_braces = 0;
1.1.1.3 root 93: static int m68k_pc_offset = 0;
1.1.1.5 root 94: static int insn_n_cycles;
1.1 root 95:
1.1.1.5 root 96: static void start_brace (void)
1.1 root 97: {
98: n_braces++;
1.1.1.3 root 99: printf ("{");
1.1 root 100: }
101:
1.1.1.5 root 102: static void close_brace (void)
1.1 root 103: {
104: assert (n_braces > 0);
105: n_braces--;
1.1.1.3 root 106: printf ("}");
1.1 root 107: }
108:
1.1.1.5 root 109: static void finish_braces (void)
1.1 root 110: {
111: while (n_braces > 0)
1.1.1.5 root 112: close_brace ();
1.1 root 113: }
114:
1.1.1.5 root 115: static void pop_braces (int to)
1.1 root 116: {
117: while (n_braces > to)
1.1.1.5 root 118: close_brace ();
1.1 root 119: }
120:
1.1.1.5 root 121: static int bit_size (int size)
1.1 root 122: {
1.1.1.5 root 123: switch (size) {
124: case sz_byte: return 8;
125: case sz_word: return 16;
126: case sz_long: return 32;
127: default: abort ();
1.1 root 128: }
129: return 0;
130: }
131:
1.1.1.5 root 132: static const char *bit_mask (int size)
1.1 root 133: {
1.1.1.5 root 134: switch (size) {
1.1.1.3 root 135: case sz_byte: return "0xff";
136: case sz_word: return "0xffff";
137: case sz_long: return "0xffffffff";
1.1.1.5 root 138: default: abort ();
1.1 root 139: }
140: return 0;
141: }
142:
1.1.1.3 root 143: static const char *gen_nextilong (void)
144: {
145: static char buffer[80];
146: int r = m68k_pc_offset;
147: m68k_pc_offset += 4;
1.1.1.5 root 148:
1.1.1.11 root 149: insn_n_cycles += 8;
1.1.1.5 root 150:
151: if (using_prefetch)
152: sprintf (buffer, "get_ilong_prefetch(%d)", r);
153: else
154: sprintf (buffer, "get_ilong(%d)", r);
1.1.1.3 root 155: return buffer;
156: }
157:
158: static const char *gen_nextiword (void)
159: {
160: static char buffer[80];
161: int r = m68k_pc_offset;
162: m68k_pc_offset += 2;
1.1.1.5 root 163:
1.1.1.11 root 164: insn_n_cycles += 4;
1.1.1.5 root 165:
166: if (using_prefetch)
167: sprintf (buffer, "get_iword_prefetch(%d)", r);
168: else
169: sprintf (buffer, "get_iword(%d)", r);
1.1.1.3 root 170: return buffer;
171: }
172:
173: static const char *gen_nextibyte (void)
174: {
175: static char buffer[80];
176: int r = m68k_pc_offset;
177: m68k_pc_offset += 2;
1.1.1.5 root 178:
1.1.1.11 root 179: insn_n_cycles += 4;
1.1.1.5 root 180:
181: if (using_prefetch)
182: sprintf (buffer, "get_ibyte_prefetch(%d)", r);
183: else
184: sprintf (buffer, "get_ibyte(%d)", r);
1.1.1.3 root 185: return buffer;
186: }
187:
188: static void fill_prefetch_0 (void)
189: {
190: if (using_prefetch)
191: printf ("fill_prefetch_0 ();\n");
192: }
193:
194: static void fill_prefetch_2 (void)
195: {
196: if (using_prefetch)
197: printf ("fill_prefetch_2 ();\n");
198: }
199:
200: static void sync_m68k_pc (void)
201: {
202: if (m68k_pc_offset == 0)
203: return;
204: printf ("m68k_incpc(%d);\n", m68k_pc_offset);
205: switch (m68k_pc_offset) {
206: case 0:
1.1.1.5 root 207: /*fprintf (stderr, "refilling prefetch at 0\n"); */
1.1.1.3 root 208: break;
209: case 2:
1.1.1.5 root 210: fill_prefetch_2 ();
1.1.1.3 root 211: break;
212: default:
1.1.1.5 root 213: fill_prefetch_0 ();
1.1.1.3 root 214: break;
215: }
216: m68k_pc_offset = 0;
217: }
218:
219: /* getv == 1: fetch data; getv != 0: check for odd address. If movem != 0,
1.1.1.14! root 220: * the calling routine handles Apdi and Aipi modes.
! 221: * gb-- movem == 2 means the same thing but for a MOVE16 instruction */
1.1.1.3 root 222: static void genamode (amodes mode, char *reg, wordsizes size, char *name, int getv, int movem)
1.1 root 223: {
1.1.1.6 root 224: start_brace ();
1.1.1.5 root 225: switch (mode) {
1.1.1.11 root 226: case Dreg:
1.1 root 227: if (movem)
1.1.1.5 root 228: abort ();
1.1.1.3 root 229: if (getv == 1)
1.1.1.5 root 230: switch (size) {
1.1.1.11 root 231: case sz_byte:
1.1.1.8 root 232: #if defined(AMIGA) && !defined(WARPUP)
1.1.1.2 root 233: /* sam: I don't know why gcc.2.7.2.1 produces a code worse */
234: /* if it is not done like that: */
1.1.1.3 root 235: printf ("\tuae_s8 %s = ((uae_u8*)&m68k_dreg(regs, %s))[3];\n", name, reg);
1.1.1.2 root 236: #else
1.1.1.3 root 237: printf ("\tuae_s8 %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_word:
1.1.1.8 root 241: #if defined(AMIGA) && !defined(WARPUP)
1.1.1.3 root 242: printf ("\tuae_s16 %s = ((uae_s16*)&m68k_dreg(regs, %s))[1];\n", name, reg);
1.1.1.2 root 243: #else
1.1.1.3 root 244: printf ("\tuae_s16 %s = m68k_dreg(regs, %s);\n", name, reg);
1.1.1.2 root 245: #endif
1.1 root 246: break;
1.1.1.11 root 247: case sz_long:
1.1.1.3 root 248: printf ("\tuae_s32 %s = m68k_dreg(regs, %s);\n", name, reg);
1.1 root 249: break;
1.1.1.11 root 250: default:
1.1.1.5 root 251: abort ();
1.1 root 252: }
1.1.1.3 root 253: return;
1.1.1.11 root 254: case Areg:
1.1 root 255: if (movem)
1.1.1.5 root 256: abort ();
1.1.1.3 root 257: if (getv == 1)
1.1.1.5 root 258: switch (size) {
1.1.1.11 root 259: case sz_word:
1.1.1.3 root 260: printf ("\tuae_s16 %s = m68k_areg(regs, %s);\n", name, reg);
1.1 root 261: break;
1.1.1.11 root 262: case sz_long:
1.1.1.3 root 263: printf ("\tuae_s32 %s = m68k_areg(regs, %s);\n", name, reg);
1.1 root 264: break;
1.1.1.11 root 265: default:
1.1.1.5 root 266: abort ();
1.1 root 267: }
1.1.1.3 root 268: return;
1.1.1.11 root 269: case Aind:
1.1.1.3 root 270: printf ("\tuaecptr %sa = m68k_areg(regs, %s);\n", name, reg);
1.1 root 271: break;
1.1.1.11 root 272: case Aipi:
1.1.1.3 root 273: printf ("\tuaecptr %sa = m68k_areg(regs, %s);\n", name, reg);
1.1 root 274: break;
1.1.1.11 root 275: case Apdi:
276: insn_n_cycles += 2;
1.1.1.5 root 277: switch (size) {
1.1.1.11 root 278: case sz_byte:
1.1.1.3 root 279: if (movem)
280: printf ("\tuaecptr %sa = m68k_areg(regs, %s);\n", name, reg);
281: else
282: printf ("\tuaecptr %sa = m68k_areg(regs, %s) - areg_byteinc[%s];\n", name, reg, reg);
1.1 root 283: break;
1.1.1.11 root 284: case sz_word:
1.1.1.3 root 285: printf ("\tuaecptr %sa = m68k_areg(regs, %s) - %d;\n", name, reg, movem ? 0 : 2);
1.1 root 286: break;
1.1.1.11 root 287: case sz_long:
1.1.1.3 root 288: printf ("\tuaecptr %sa = m68k_areg(regs, %s) - %d;\n", name, reg, movem ? 0 : 4);
1.1 root 289: break;
1.1.1.11 root 290: default:
1.1.1.5 root 291: abort ();
1.1 root 292: }
293: break;
1.1.1.11 root 294: case Ad16:
1.1.1.5 root 295: printf ("\tuaecptr %sa = m68k_areg(regs, %s) + (uae_s32)(uae_s16)%s;\n", name, reg, gen_nextiword ());
1.1 root 296: break;
1.1.1.11 root 297: case Ad8r:
298: insn_n_cycles += 2;
1.1.1.3 root 299: if (cpu_level > 1) {
300: if (next_cpu_level < 1)
301: next_cpu_level = 1;
1.1.1.5 root 302: sync_m68k_pc ();
303: start_brace ();
1.1.1.11 root 304: /* This would ordinarily be done in gen_nextiword, which we bypass. */
305: insn_n_cycles += 4;
1.1.1.3 root 306: printf ("\tuaecptr %sa = get_disp_ea_020(m68k_areg(regs, %s), next_iword());\n", name, reg);
1.1.1.6 root 307: } else
1.1.1.5 root 308: printf ("\tuaecptr %sa = get_disp_ea_000(m68k_areg(regs, %s), %s);\n", name, reg, gen_nextiword ());
1.1.1.6 root 309:
1.1 root 310: break;
1.1.1.11 root 311: case PC16:
1.1.1.6 root 312: printf ("\tuaecptr %sa = m68k_getpc () + %d;\n", name, m68k_pc_offset);
313: printf ("\t%sa += (uae_s32)(uae_s16)%s;\n", name, gen_nextiword ());
1.1 root 314: break;
1.1.1.11 root 315: case PC8r:
316: insn_n_cycles += 2;
1.1.1.3 root 317: if (cpu_level > 1) {
318: if (next_cpu_level < 1)
319: next_cpu_level = 1;
1.1.1.5 root 320: sync_m68k_pc ();
321: start_brace ();
1.1.1.11 root 322: /* This would ordinarily be done in gen_nextiword, which we bypass. */
323: insn_n_cycles += 4;
1.1.1.3 root 324: printf ("\tuaecptr tmppc = m68k_getpc();\n");
325: printf ("\tuaecptr %sa = get_disp_ea_020(tmppc, next_iword());\n", name);
326: } else {
1.1.1.6 root 327: printf ("\tuaecptr tmppc = m68k_getpc() + %d;\n", m68k_pc_offset);
328: printf ("\tuaecptr %sa = get_disp_ea_000(tmppc, %s);\n", name, gen_nextiword ());
1.1 root 329: }
1.1.1.3 root 330:
1.1 root 331: break;
1.1.1.11 root 332: case absw:
1.1.1.6 root 333: printf ("\tuaecptr %sa = (uae_s32)(uae_s16)%s;\n", name, gen_nextiword ());
1.1 root 334: break;
1.1.1.11 root 335: case absl:
1.1.1.6 root 336: printf ("\tuaecptr %sa = %s;\n", name, gen_nextilong ());
1.1 root 337: break;
1.1.1.11 root 338: case imm:
1.1.1.3 root 339: if (getv != 1)
340: abort ();
1.1.1.5 root 341: switch (size) {
1.1.1.11 root 342: case sz_byte:
1.1.1.6 root 343: printf ("\tuae_s8 %s = %s;\n", name, gen_nextibyte ());
1.1.1.3 root 344: break;
1.1.1.11 root 345: case sz_word:
1.1.1.6 root 346: printf ("\tuae_s16 %s = %s;\n", name, gen_nextiword ());
1.1.1.3 root 347: break;
1.1.1.11 root 348: case sz_long:
1.1.1.6 root 349: printf ("\tuae_s32 %s = %s;\n", name, gen_nextilong ());
1.1.1.3 root 350: break;
1.1.1.11 root 351: default:
1.1.1.5 root 352: abort ();
1.1.1.3 root 353: }
354: return;
1.1.1.11 root 355: case imm0:
1.1.1.5 root 356: if (getv != 1)
357: abort ();
1.1.1.6 root 358: printf ("\tuae_s8 %s = %s;\n", name, gen_nextibyte ());
1.1.1.3 root 359: return;
1.1.1.11 root 360: case imm1:
1.1.1.5 root 361: if (getv != 1)
362: abort ();
1.1.1.6 root 363: printf ("\tuae_s16 %s = %s;\n", name, gen_nextiword ());
1.1.1.3 root 364: return;
1.1.1.11 root 365: case imm2:
1.1.1.5 root 366: if (getv != 1)
367: abort ();
1.1.1.6 root 368: printf ("\tuae_s32 %s = %s;\n", name, gen_nextilong ());
1.1.1.3 root 369: return;
1.1.1.11 root 370: case immi:
1.1.1.5 root 371: if (getv != 1)
372: abort ();
1.1.1.3 root 373: printf ("\tuae_u32 %s = %s;\n", name, reg);
374: return;
1.1.1.11 root 375: default:
1.1.1.5 root 376: abort ();
1.1.1.3 root 377: }
378:
379: /* We get here for all non-reg non-immediate addressing modes to
380: * actually fetch the value. */
381:
1.1.1.6 root 382: if (using_exception_3 && getv != 0 && size != sz_byte) {
1.1.1.3 root 383: printf ("\tif ((%sa & 1) != 0) {\n", name);
384: printf ("\t\tlast_fault_for_exception_3 = %sa;\n", name);
1.1.1.5 root 385: printf ("\t\tlast_op_for_exception_3 = opcode;\n");
1.1.1.3 root 386: printf ("\t\tlast_addr_for_exception_3 = m68k_getpc() + %d;\n", m68k_pc_offset);
387: printf ("\t\tException(3, 0);\n");
388: printf ("\t\tgoto %s;\n", endlabelstr);
389: printf ("\t}\n");
1.1.1.5 root 390: need_endlabel = 1;
1.1.1.3 root 391: start_brace ();
392: }
1.1.1.6 root 393:
394: if (getv == 1) {
395: switch (size) {
1.1.1.11 root 396: case sz_byte: insn_n_cycles += 4; break;
397: case sz_word: insn_n_cycles += 4; break;
398: case sz_long: insn_n_cycles += 8; break;
399: default: abort ();
1.1.1.6 root 400: }
401: start_brace ();
402: switch (size) {
1.1.1.11 root 403: case sz_byte: printf ("\tuae_s8 %s = get_byte(%sa);\n", name, name); break;
404: case sz_word: printf ("\tuae_s16 %s = get_word(%sa);\n", name, name); break;
405: case sz_long: printf ("\tuae_s32 %s = get_long(%sa);\n", name, name); break;
406: default: abort ();
1.1.1.6 root 407: }
408: }
409:
1.1.1.3 root 410: /* We now might have to fix up the register for pre-dec or post-inc
411: * addressing modes. */
412: if (!movem)
413: switch (mode) {
1.1.1.11 root 414: case Aipi:
1.1.1.5 root 415: switch (size) {
1.1.1.11 root 416: case sz_byte:
1.1.1.3 root 417: printf ("\tm68k_areg(regs, %s) += areg_byteinc[%s];\n", reg, reg);
1.1 root 418: break;
1.1.1.11 root 419: case sz_word:
1.1.1.3 root 420: printf ("\tm68k_areg(regs, %s) += 2;\n", reg);
1.1 root 421: break;
1.1.1.11 root 422: case sz_long:
1.1.1.3 root 423: printf ("\tm68k_areg(regs, %s) += 4;\n", reg);
1.1 root 424: break;
1.1.1.11 root 425: default:
1.1.1.5 root 426: abort ();
1.1 root 427: }
1.1.1.3 root 428: break;
1.1.1.11 root 429: case Apdi:
1.1.1.3 root 430: printf ("\tm68k_areg (regs, %s) = %sa;\n", reg, name);
431: break;
1.1.1.11 root 432: default:
1.1.1.3 root 433: break;
434: }
1.1 root 435: }
436:
1.1.1.3 root 437: static void genastore (char *from, amodes mode, char *reg, wordsizes size, char *to)
1.1 root 438: {
1.1.1.5 root 439: switch (mode) {
1.1 root 440: case Dreg:
1.1.1.5 root 441: switch (size) {
1.1 root 442: case sz_byte:
1.1.1.3 root 443: printf ("\tm68k_dreg(regs, %s) = (m68k_dreg(regs, %s) & ~0xff) | ((%s) & 0xff);\n", reg, reg, from);
1.1 root 444: break;
445: case sz_word:
1.1.1.3 root 446: printf ("\tm68k_dreg(regs, %s) = (m68k_dreg(regs, %s) & ~0xffff) | ((%s) & 0xffff);\n", reg, reg, from);
1.1 root 447: break;
448: case sz_long:
1.1.1.3 root 449: printf ("\tm68k_dreg(regs, %s) = (%s);\n", reg, from);
1.1 root 450: break;
1.1.1.5 root 451: default:
452: abort ();
1.1 root 453: }
454: break;
455: case Areg:
1.1.1.5 root 456: switch (size) {
1.1 root 457: case sz_word:
1.1.1.3 root 458: fprintf (stderr, "Foo\n");
459: printf ("\tm68k_areg(regs, %s) = (uae_s32)(uae_s16)(%s);\n", reg, from);
1.1 root 460: break;
461: case sz_long:
1.1.1.3 root 462: printf ("\tm68k_areg(regs, %s) = (%s);\n", reg, from);
1.1 root 463: break;
1.1.1.5 root 464: default:
465: abort ();
1.1 root 466: }
467: break;
468: case Aind:
469: case Aipi:
470: case Apdi:
471: case Ad16:
472: case Ad8r:
473: case absw:
474: case absl:
475: case PC16:
476: case PC8r:
1.1.1.3 root 477: if (using_prefetch)
1.1.1.5 root 478: sync_m68k_pc ();
479: switch (size) {
1.1 root 480: case sz_byte:
1.1.1.11 root 481: insn_n_cycles += 4;
1.1.1.3 root 482: printf ("\tput_byte(%sa,%s);\n", to, from);
1.1 root 483: break;
484: case sz_word:
1.1.1.11 root 485: insn_n_cycles += 4;
1.1.1.5 root 486: if (cpu_level < 2 && (mode == PC16 || mode == PC8r))
487: abort ();
1.1.1.3 root 488: printf ("\tput_word(%sa,%s);\n", to, from);
1.1 root 489: break;
490: case sz_long:
1.1.1.11 root 491: insn_n_cycles += 8;
1.1.1.5 root 492: if (cpu_level < 2 && (mode == PC16 || mode == PC8r))
493: abort ();
1.1.1.3 root 494: printf ("\tput_long(%sa,%s);\n", to, from);
1.1 root 495: break;
1.1.1.5 root 496: default:
497: abort ();
1.1 root 498: }
499: break;
500: case imm:
501: case imm0:
502: case imm1:
503: case imm2:
504: case immi:
1.1.1.5 root 505: abort ();
1.1 root 506: break;
1.1.1.3 root 507: default:
1.1.1.5 root 508: abort ();
1.1 root 509: }
510: }
511:
1.1.1.5 root 512: static void genmovemel (uae_u16 opcode)
1.1 root 513: {
514: char getcode[100];
515: int size = table68k[opcode].size == sz_long ? 4 : 2;
1.1.1.3 root 516:
517: if (table68k[opcode].size == sz_long) {
1.1.1.5 root 518: strcpy (getcode, "get_long(srca)");
1.1.1.3 root 519: } else {
1.1.1.5 root 520: strcpy (getcode, "(uae_s32)(uae_s16)get_word(srca)");
1.1 root 521: }
1.1.1.3 root 522:
1.1.1.5 root 523: printf ("\tuae_u16 mask = %s;\n", gen_nextiword ());
1.1.1.3 root 524: printf ("\tunsigned int dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n");
525: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1);
1.1.1.5 root 526: start_brace ();
1.1.1.3 root 527: printf ("\twhile (dmask) { m68k_dreg(regs, movem_index1[dmask]) = %s; srca += %d; dmask = movem_next[dmask]; }\n",
1.1.1.5 root 528: getcode, size);
1.1.1.3 root 529: printf ("\twhile (amask) { m68k_areg(regs, movem_index1[amask]) = %s; srca += %d; amask = movem_next[amask]; }\n",
1.1.1.5 root 530: getcode, size);
1.1 root 531:
532: if (table68k[opcode].dmode == Aipi)
1.1.1.3 root 533: printf ("\tm68k_areg(regs, dstreg) = srca;\n");
1.1 root 534: }
535:
1.1.1.5 root 536: static void genmovemle (uae_u16 opcode)
1.1 root 537: {
538: char putcode[100];
539: int size = table68k[opcode].size == sz_long ? 4 : 2;
540: if (table68k[opcode].size == sz_long) {
1.1.1.5 root 541: strcpy (putcode, "put_long(srca,");
1.1.1.3 root 542: } else {
1.1.1.5 root 543: strcpy (putcode, "put_word(srca,");
1.1 root 544: }
1.1.1.3 root 545:
1.1.1.5 root 546: printf ("\tuae_u16 mask = %s;\n", gen_nextiword ());
1.1.1.3 root 547: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1);
548: if (using_prefetch)
1.1.1.5 root 549: sync_m68k_pc ();
1.1.1.3 root 550:
1.1.1.5 root 551: start_brace ();
1.1 root 552: if (table68k[opcode].dmode == Apdi) {
1.1.1.3 root 553: printf ("\tuae_u16 amask = mask & 0xff, dmask = (mask >> 8) & 0xff;\n");
554: printf ("\twhile (amask) { srca -= %d; %s m68k_areg(regs, movem_index2[amask])); amask = movem_next[amask]; }\n",
1.1.1.5 root 555: size, putcode);
1.1.1.3 root 556: printf ("\twhile (dmask) { srca -= %d; %s m68k_dreg(regs, movem_index2[dmask])); dmask = movem_next[dmask]; }\n",
1.1.1.5 root 557: size, putcode);
1.1.1.3 root 558: printf ("\tm68k_areg(regs, dstreg) = srca;\n");
1.1.1.2 root 559: } else {
1.1.1.3 root 560: printf ("\tuae_u16 dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n");
561: printf ("\twhile (dmask) { %s m68k_dreg(regs, movem_index1[dmask])); srca += %d; dmask = movem_next[dmask]; }\n",
1.1.1.5 root 562: putcode, size);
1.1.1.3 root 563: printf ("\twhile (amask) { %s m68k_areg(regs, movem_index1[amask])); srca += %d; amask = movem_next[amask]; }\n",
1.1.1.5 root 564: putcode, size);
1.1 root 565: }
566: }
567:
1.1.1.7 root 568: static void duplicate_carry (void)
569: {
570: printf ("\tCOPY_CARRY;\n");
571: }
572:
1.1.1.12 root 573: typedef enum
574: {
575: flag_logical_noclobber, flag_logical, flag_add, flag_sub, flag_cmp, flag_addx, flag_subx, flag_zn,
576: flag_av, flag_sv
577: }
578: flagtypes;
1.1 root 579:
1.1.1.5 root 580: static void genflags_normal (flagtypes type, wordsizes size, char *value, char *src, char *dst)
1.1 root 581: {
1.1.1.5 root 582: char vstr[100], sstr[100], dstr[100];
583: char usstr[100], udstr[100];
584: char unsstr[100], undstr[100];
1.1 root 585:
1.1.1.5 root 586: switch (size) {
1.1 root 587: case sz_byte:
1.1.1.5 root 588: strcpy (vstr, "((uae_s8)(");
589: strcpy (usstr, "((uae_u8)(");
1.1 root 590: break;
591: case sz_word:
1.1.1.5 root 592: strcpy (vstr, "((uae_s16)(");
593: strcpy (usstr, "((uae_u16)(");
1.1 root 594: break;
595: case sz_long:
1.1.1.5 root 596: strcpy (vstr, "((uae_s32)(");
597: strcpy (usstr, "((uae_u32)(");
1.1 root 598: break;
599: default:
1.1.1.5 root 600: abort ();
1.1 root 601: }
1.1.1.5 root 602: strcpy (unsstr, usstr);
1.1 root 603:
1.1.1.5 root 604: strcpy (sstr, vstr);
605: strcpy (dstr, vstr);
606: strcat (vstr, value);
607: strcat (vstr, "))");
608: strcat (dstr, dst);
609: strcat (dstr, "))");
610: strcat (sstr, src);
611: strcat (sstr, "))");
612:
613: strcpy (udstr, usstr);
614: strcat (udstr, dst);
615: strcat (udstr, "))");
616: strcat (usstr, src);
617: strcat (usstr, "))");
618:
619: strcpy (undstr, unsstr);
620: strcat (unsstr, "-");
621: strcat (undstr, "~");
622: strcat (undstr, dst);
623: strcat (undstr, "))");
624: strcat (unsstr, src);
625: strcat (unsstr, "))");
1.1 root 626:
627: switch (type) {
1.1.1.7 root 628: case flag_logical_noclobber:
1.1 root 629: case flag_logical:
630: case flag_zn:
631: case flag_av:
632: case flag_sv:
633: case flag_addx:
634: case flag_subx:
635: break;
1.1.1.3 root 636:
1.1 root 637: case flag_add:
1.1.1.5 root 638: start_brace ();
1.1.1.3 root 639: printf ("uae_u32 %s = %s + %s;\n", value, dstr, sstr);
1.1 root 640: break;
641: case flag_sub:
642: case flag_cmp:
1.1.1.5 root 643: start_brace ();
1.1.1.3 root 644: printf ("uae_u32 %s = %s - %s;\n", value, dstr, sstr);
1.1 root 645: break;
646: }
647:
648: switch (type) {
1.1.1.7 root 649: case flag_logical_noclobber:
1.1 root 650: case flag_logical:
651: case flag_zn:
652: break;
1.1.1.3 root 653:
1.1 root 654: case flag_add:
655: case flag_sub:
656: case flag_addx:
657: case flag_subx:
658: case flag_cmp:
659: case flag_av:
660: case flag_sv:
1.1.1.5 root 661: start_brace ();
662: printf ("\t" BOOL_TYPE " flgs = %s < 0;\n", sstr);
663: printf ("\t" BOOL_TYPE " flgo = %s < 0;\n", dstr);
664: printf ("\t" BOOL_TYPE " flgn = %s < 0;\n", vstr);
1.1 root 665: break;
666: }
1.1.1.3 root 667:
1.1.1.5 root 668: switch (type) {
1.1 root 669: case flag_logical:
1.1.1.7 root 670: printf ("\tCLEAR_CZNV;\n");
671: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
672: printf ("\tSET_NFLG (%s < 0);\n", vstr);
673: break;
674: case flag_logical_noclobber:
675: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
676: printf ("\tSET_NFLG (%s < 0);\n", vstr);
1.1 root 677: break;
678: case flag_av:
1.1.1.7 root 679: printf ("\tSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n");
1.1 root 680: break;
681: case flag_sv:
1.1.1.7 root 682: printf ("\tSET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));\n");
1.1 root 683: break;
684: case flag_zn:
1.1.1.7 root 685: printf ("\tSET_ZFLG (GET_ZFLG & (%s == 0));\n", vstr);
686: printf ("\tSET_NFLG (%s < 0);\n", vstr);
1.1 root 687: break;
688: case flag_add:
1.1.1.7 root 689: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
1.1.1.8 root 690: printf ("\tSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n");
1.1.1.7 root 691: printf ("\tSET_CFLG (%s < %s);\n", undstr, usstr);
692: duplicate_carry ();
693: printf ("\tSET_NFLG (flgn != 0);\n");
1.1 root 694: break;
695: case flag_sub:
1.1.1.7 root 696: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
697: printf ("\tSET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));\n");
698: printf ("\tSET_CFLG (%s > %s);\n", usstr, udstr);
1.1.1.8 root 699: duplicate_carry ();
1.1.1.7 root 700: printf ("\tSET_NFLG (flgn != 0);\n");
1.1 root 701: break;
702: case flag_addx:
1.1.1.7 root 703: printf ("\tSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n"); /* minterm SON: 0x42 */
704: printf ("\tSET_CFLG (flgs ^ ((flgs ^ flgo) & (flgo ^ flgn)));\n"); /* minterm SON: 0xD4 */
705: duplicate_carry ();
1.1 root 706: break;
707: case flag_subx:
1.1.1.7 root 708: printf ("\tSET_VFLG ((flgs ^ flgo) & (flgo ^ flgn));\n"); /* minterm SON: 0x24 */
709: printf ("\tSET_CFLG (flgs ^ ((flgs ^ flgn) & (flgo ^ flgn)));\n"); /* minterm SON: 0xB2 */
710: duplicate_carry ();
1.1 root 711: break;
712: case flag_cmp:
1.1.1.7 root 713: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
714: printf ("\tSET_VFLG ((flgs != flgo) && (flgn != flgo));\n");
715: printf ("\tSET_CFLG (%s > %s);\n", usstr, udstr);
716: printf ("\tSET_NFLG (flgn != 0);\n");
1.1 root 717: break;
718: }
719: }
720:
1.1.1.5 root 721: static void genflags (flagtypes type, wordsizes size, char *value, char *src, char *dst)
1.1 root 722: {
1.1.1.11 root 723: /* Temporarily deleted 68k/ARM flag optimizations. I'd prefer to have
724: them in the appropriate m68k.h files and use just one copy of this
725: code here. The API can be changed if necessary. */
726: #ifdef OPTIMIZED_FLAGS
1.1 root 727: switch (type) {
1.1.1.5 root 728: case flag_add:
729: case flag_sub:
730: start_brace ();
1.1.1.3 root 731: printf ("\tuae_u32 %s;\n", value);
1.1 root 732: break;
733:
1.1.1.3 root 734: default:
1.1 root 735: break;
736: }
737:
1.1.1.3 root 738: /* At least some of those casts are fairly important! */
1.1.1.5 root 739: switch (type) {
1.1.1.7 root 740: case flag_logical_noclobber:
1.1.1.11 root 741: printf ("\t{uae_u32 oldcznv = GET_CZNV & ~(FLAGVAL_Z | FLAGVAL_N);\n");
1.1.1.7 root 742: if (strcmp (value, "0") == 0) {
1.1.1.11 root 743: printf ("\tSET_CZNV (olcznv | FLAGVAL_Z);\n");
1.1.1.7 root 744: } else {
745: switch (size) {
1.1.1.11 root 746: case sz_byte: printf ("\toptflag_testb ((uae_s8)(%s));\n", value); break;
747: case sz_word: printf ("\toptflag_testw ((uae_s16)(%s));\n", value); break;
748: case sz_long: printf ("\toptflag_testl ((uae_s32)(%s));\n", value); break;
1.1.1.7 root 749: }
1.1.1.11 root 750: printf ("\tIOR_CZNV (oldcznv);\n");
1.1.1.7 root 751: }
752: printf ("\t}\n");
753: return;
1.1 root 754: case flag_logical:
1.1.1.5 root 755: if (strcmp (value, "0") == 0) {
1.1.1.11 root 756: printf ("\tSET_CZNV (FLAGVAL_Z);\n");
1.1 root 757: } else {
1.1.1.5 root 758: switch (size) {
1.1.1.11 root 759: case sz_byte: printf ("\toptflag_testb ((uae_s8)(%s));\n", value); break;
760: case sz_word: printf ("\toptflag_testw ((uae_s16)(%s));\n", value); break;
761: case sz_long: printf ("\toptflag_testl ((uae_s32)(%s));\n", value); break;
1.1 root 762: }
763: }
764: return;
765:
766: case flag_add:
1.1.1.5 root 767: switch (size) {
1.1.1.11 root 768: case sz_byte: printf ("\toptflag_addb (%s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break;
769: case sz_word: printf ("\toptflag_addw (%s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break;
770: case sz_long: printf ("\toptflag_addl (%s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break;
1.1 root 771: }
772: return;
773:
774: case flag_sub:
1.1.1.5 root 775: switch (size) {
1.1.1.11 root 776: case sz_byte: printf ("\toptflag_subb (%s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break;
777: case sz_word: printf ("\toptflag_subw (%s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break;
778: case sz_long: printf ("\toptflag_subl (%s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break;
1.1 root 779: }
780: return;
781:
782: case flag_cmp:
1.1.1.5 root 783: switch (size) {
1.1.1.11 root 784: case sz_byte: printf ("\toptflag_cmpb ((uae_s8)(%s), (uae_s8)(%s));\n", src, dst); break;
785: case sz_word: printf ("\toptflag_cmpw ((uae_s16)(%s), (uae_s16)(%s));\n", src, dst); break;
786: case sz_long: printf ("\toptflag_cmpl ((uae_s32)(%s), (uae_s32)(%s));\n", src, dst); break;
1.1 root 787: }
788: return;
1.1.1.5 root 789:
1.1.1.3 root 790: default:
791: break;
1.1 root 792: }
793: #endif
1.1.1.11 root 794:
1.1.1.5 root 795: genflags_normal (type, size, value, src, dst);
1.1 root 796: }
1.1.1.3 root 797:
1.1.1.7 root 798: static void force_range_for_rox (const char *var, wordsizes size)
799: {
800: /* Could do a modulo operation here... which one is faster? */
801: switch (size) {
802: case sz_long:
803: printf ("\tif (%s >= 33) %s -= 33;\n", var, var);
804: break;
805: case sz_word:
806: printf ("\tif (%s >= 34) %s -= 34;\n", var, var);
807: printf ("\tif (%s >= 17) %s -= 17;\n", var, var);
808: break;
809: case sz_byte:
810: printf ("\tif (%s >= 36) %s -= 36;\n", var, var);
811: printf ("\tif (%s >= 18) %s -= 18;\n", var, var);
812: printf ("\tif (%s >= 9) %s -= 9;\n", var, var);
813: break;
814: }
815: }
816:
817: static const char *cmask (wordsizes size)
818: {
819: switch (size) {
820: case sz_byte: return "0x80";
821: case sz_word: return "0x8000";
822: case sz_long: return "0x80000000";
823: default: abort ();
824: }
825: }
826:
827: static int source_is_imm1_8 (struct instr *i)
828: {
829: return i->stype == 3;
830: }
831:
1.1.1.5 root 832: static void gen_opcode (unsigned long int opcode)
1.1 root 833: {
1.1.1.7 root 834: struct instr *curi = table68k + opcode;
1.1.1.11 root 835: insn_n_cycles = 4;
1.1.1.5 root 836:
1.1 root 837: start_brace ();
1.1.1.3 root 838: #if 0
839: printf ("uae_u8 *m68k_pc = regs.pc_p;\n");
840: #endif
841: m68k_pc_offset = 2;
1.1.1.7 root 842: switch (curi->plev) {
1.1.1.11 root 843: case 0: /* not privileged */
1.1 root 844: break;
1.1.1.11 root 845: case 1: /* unprivileged only on 68000 */
1.1.1.3 root 846: if (cpu_level == 0)
1.1 root 847: break;
1.1.1.3 root 848: if (next_cpu_level < 0)
849: next_cpu_level = 0;
850:
1.1.1.5 root 851: /* fall through */
1.1.1.11 root 852: case 2: /* priviledged */
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;
1.1.1.11 root 857: case 3: /* privileged if size == word */
1.1.1.7 root 858: if (curi->size == sz_byte)
1.1 root 859: break;
1.1.1.3 root 860: printf ("if (!regs.s) { Exception(8,0); goto %s; }\n", endlabelstr);
1.1.1.5 root 861: need_endlabel = 1;
862: start_brace ();
1.1 root 863: break;
864: }
1.1.1.7 root 865: switch (curi->mnemo) {
1.1.1.11 root 866: case i_OR:
867: case i_AND:
868: case i_EOR:
1.1.1.7 root 869: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
870: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
871: printf ("\tsrc %c= dst;\n", curi->mnemo == i_OR ? '|' : curi->mnemo == i_AND ? '&' : '^');
872: genflags (flag_logical, curi->size, "src", "", "");
873: genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 874: break;
1.1.1.11 root 875: case i_ORSR:
876: case i_EORSR:
1.1.1.3 root 877: printf ("\tMakeSR();\n");
1.1.1.7 root 878: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
879: if (curi->size == sz_byte) {
1.1.1.3 root 880: printf ("\tsrc &= 0xFF;\n");
1.1 root 881: }
1.1.1.7 root 882: printf ("\tregs.sr %c= src;\n", curi->mnemo == i_EORSR ? '^' : '|');
1.1.1.3 root 883: printf ("\tMakeFromSR();\n");
1.1 root 884: break;
1.1.1.11 root 885: case i_ANDSR:
1.1.1.3 root 886: printf ("\tMakeSR();\n");
1.1.1.7 root 887: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
888: if (curi->size == sz_byte) {
1.1.1.3 root 889: printf ("\tsrc |= 0xFF00;\n");
1.1 root 890: }
1.1.1.3 root 891: printf ("\tregs.sr &= src;\n");
892: printf ("\tMakeFromSR();\n");
1.1 root 893: break;
1.1.1.11 root 894: case i_SUB:
1.1.1.7 root 895: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
896: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 897: start_brace ();
1.1.1.7 root 898: genflags (flag_sub, curi->size, "newv", "src", "dst");
899: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 900: break;
1.1.1.11 root 901: case i_SUBA:
1.1.1.7 root 902: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
903: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1 root 904: start_brace ();
1.1.1.3 root 905: printf ("\tuae_u32 newv = dst - src;\n");
1.1.1.7 root 906: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1 root 907: break;
1.1.1.11 root 908: case i_SUBX:
1.1.1.7 root 909: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
910: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 911: start_brace ();
1.1.1.7 root 912: printf ("\tuae_u32 newv = dst - src - (GET_XFLG ? 1 : 0);\n");
913: genflags (flag_subx, curi->size, "newv", "src", "dst");
914: genflags (flag_zn, curi->size, "newv", "", "");
915: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 916: break;
1.1.1.11 root 917: case i_SBCD:
1.1.1.7 root 918: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
919: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 920: start_brace ();
1.1.1.7 root 921: printf ("\tuae_u16 newv_lo = (dst & 0xF) - (src & 0xF) - (GET_XFLG ? 1 : 0);\n");
1.1.1.3 root 922: printf ("\tuae_u16 newv_hi = (dst & 0xF0) - (src & 0xF0);\n");
1.1.1.14! root 923: printf ("\tuae_u16 newv, tmp_newv;\n");
! 924: printf ("\tint bcd = 0;\n");
! 925: printf ("\tnewv = tmp_newv = newv_hi + newv_lo;\n");
! 926: printf ("\tif (newv_lo & 0xF0) { newv -= 6; bcd = 6; };\n");
! 927: printf ("\tif ((((dst & 0xFF) - (src & 0xFF) - (GET_XFLG ? 1 : 0)) & 0x100) > 0xFF) { newv -= 0x60; }\n");
! 928: printf ("\tSET_CFLG ((((dst & 0xFF) - (src & 0xFF) - bcd - (GET_XFLG ? 1 : 0)) & 0x300) > 0xFF);\n");
1.1.1.7 root 929: duplicate_carry ();
930: genflags (flag_zn, curi->size, "newv", "", "");
1.1.1.14! root 931: printf ("\tSET_VFLG ((tmp_newv & 0x80) != 0 && (newv & 0x80) == 0);\n");
1.1.1.7 root 932: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 933: break;
1.1.1.11 root 934: case i_ADD:
1.1.1.7 root 935: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
936: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 937: start_brace ();
1.1.1.7 root 938: genflags (flag_add, curi->size, "newv", "src", "dst");
939: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 940: break;
1.1.1.11 root 941: case i_ADDA:
1.1.1.7 root 942: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
943: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1 root 944: start_brace ();
1.1.1.3 root 945: printf ("\tuae_u32 newv = dst + src;\n");
1.1.1.7 root 946: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1 root 947: break;
1.1.1.11 root 948: case i_ADDX:
1.1.1.7 root 949: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
950: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 951: start_brace ();
1.1.1.7 root 952: printf ("\tuae_u32 newv = dst + src + (GET_XFLG ? 1 : 0);\n");
953: genflags (flag_addx, curi->size, "newv", "src", "dst");
954: genflags (flag_zn, curi->size, "newv", "", "");
955: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 956: break;
1.1.1.11 root 957: case i_ABCD:
1.1.1.7 root 958: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
959: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 960: start_brace ();
1.1.1.7 root 961: printf ("\tuae_u16 newv_lo = (src & 0xF) + (dst & 0xF) + (GET_XFLG ? 1 : 0);\n");
1.1.1.3 root 962: printf ("\tuae_u16 newv_hi = (src & 0xF0) + (dst & 0xF0);\n");
1.1.1.14! root 963: printf ("\tuae_u16 newv, tmp_newv;\n");
1.1.1.7 root 964: printf ("\tint cflg;\n");
1.1.1.14! root 965: printf ("\tnewv = tmp_newv = newv_hi + newv_lo;");
! 966: printf ("\tif (newv_lo > 9) { newv += 6; }\n");
! 967: printf ("\tcflg = (newv & 0x3F0) > 0x90;\n");
! 968: printf ("\tif (cflg) newv += 0x60;\n");
1.1.1.12 root 969: printf ("\tSET_CFLG (cflg);\n");
1.1.1.7 root 970: duplicate_carry ();
971: genflags (flag_zn, curi->size, "newv", "", "");
1.1.1.14! root 972: printf ("\tSET_VFLG ((tmp_newv & 0x80) == 0 && (newv & 0x80) != 0);\n");
1.1.1.7 root 973: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 974: break;
1.1.1.11 root 975: case i_NEG:
1.1.1.7 root 976: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1 root 977: start_brace ();
1.1.1.7 root 978: genflags (flag_sub, curi->size, "dst", "src", "0");
979: genastore ("dst", curi->smode, "srcreg", curi->size, "src");
1.1 root 980: break;
1.1.1.11 root 981: case i_NEGX:
1.1.1.7 root 982: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1 root 983: start_brace ();
1.1.1.7 root 984: printf ("\tuae_u32 newv = 0 - src - (GET_XFLG ? 1 : 0);\n");
985: genflags (flag_subx, curi->size, "newv", "src", "0");
986: genflags (flag_zn, curi->size, "newv", "", "");
987: genastore ("newv", curi->smode, "srcreg", curi->size, "src");
1.1 root 988: break;
1.1.1.11 root 989: case i_NBCD:
1.1.1.7 root 990: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1 root 991: start_brace ();
1.1.1.7 root 992: printf ("\tuae_u16 newv_lo = - (src & 0xF) - (GET_XFLG ? 1 : 0);\n");
1.1.1.3 root 993: printf ("\tuae_u16 newv_hi = - (src & 0xF0);\n");
994: printf ("\tuae_u16 newv;\n");
1.1.1.7 root 995: printf ("\tint cflg;\n");
1.1.1.14! root 996: printf ("\tif (newv_lo > 9) { newv_lo -= 6; }\n");
! 997: printf ("\tnewv = newv_hi + newv_lo;");
! 998: printf ("\tcflg = (newv & 0x1F0) > 0x90;\n");
! 999: printf ("\tif (cflg) newv -= 0x60;\n");
1.1.1.12 root 1000: printf ("\tSET_CFLG (cflg);\n");
1.1.1.8 root 1001: duplicate_carry();
1.1.1.7 root 1002: genflags (flag_zn, curi->size, "newv", "", "");
1003: genastore ("newv", curi->smode, "srcreg", curi->size, "src");
1.1 root 1004: break;
1.1.1.11 root 1005: case i_CLR:
1.1.1.7 root 1006: genamode (curi->smode, "srcreg", curi->size, "src", 2, 0);
1007: genflags (flag_logical, curi->size, "0", "", "");
1008: genastore ("0", curi->smode, "srcreg", curi->size, "src");
1.1 root 1009: break;
1.1.1.11 root 1010: case i_NOT:
1.1.1.7 root 1011: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1 root 1012: start_brace ();
1.1.1.3 root 1013: printf ("\tuae_u32 dst = ~src;\n");
1.1.1.7 root 1014: genflags (flag_logical, curi->size, "dst", "", "");
1015: genastore ("dst", curi->smode, "srcreg", curi->size, "src");
1.1 root 1016: break;
1.1.1.11 root 1017: case i_TST:
1.1.1.7 root 1018: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1019: genflags (flag_logical, curi->size, "src", "", "");
1.1 root 1020: break;
1.1.1.11 root 1021: case i_BTST:
1.1.1.7 root 1022: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1023: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1024: if (curi->size == sz_byte)
1.1.1.3 root 1025: printf ("\tsrc &= 7;\n");
1.1 root 1026: else
1.1.1.3 root 1027: printf ("\tsrc &= 31;\n");
1.1.1.7 root 1028: printf ("\tSET_ZFLG (1 ^ ((dst >> src) & 1));\n");
1.1 root 1029: break;
1.1.1.11 root 1030: case i_BCHG:
1.1.1.7 root 1031: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1032: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1033: if (curi->size == sz_byte)
1.1.1.3 root 1034: printf ("\tsrc &= 7;\n");
1.1 root 1035: else
1.1.1.3 root 1036: printf ("\tsrc &= 31;\n");
1037: printf ("\tdst ^= (1 << src);\n");
1.1.1.9 root 1038: printf ("\tSET_ZFLG (((uae_u32)dst & (1 << src)) >> src);\n");
1.1.1.7 root 1039: genastore ("dst", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1040: break;
1.1.1.11 root 1041: case i_BCLR:
1.1.1.7 root 1042: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1043: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1044: if (curi->size == sz_byte)
1.1.1.3 root 1045: printf ("\tsrc &= 7;\n");
1.1 root 1046: else
1.1.1.3 root 1047: printf ("\tsrc &= 31;\n");
1.1.1.7 root 1048: printf ("\tSET_ZFLG (1 ^ ((dst >> src) & 1));\n");
1.1.1.3 root 1049: printf ("\tdst &= ~(1 << src);\n");
1.1.1.7 root 1050: genastore ("dst", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1051: break;
1.1.1.11 root 1052: case i_BSET:
1.1.1.7 root 1053: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1054: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1055: if (curi->size == sz_byte)
1.1.1.3 root 1056: printf ("\tsrc &= 7;\n");
1.1 root 1057: else
1.1.1.3 root 1058: printf ("\tsrc &= 31;\n");
1.1.1.7 root 1059: printf ("\tSET_ZFLG (1 ^ ((dst >> src) & 1));\n");
1.1.1.3 root 1060: printf ("\tdst |= (1 << src);\n");
1.1.1.7 root 1061: genastore ("dst", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1062: break;
1.1.1.11 root 1063: case i_CMPM:
1064: case i_CMP:
1.1.1.7 root 1065: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1066: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 1067: start_brace ();
1.1.1.7 root 1068: genflags (flag_cmp, curi->size, "newv", "src", "dst");
1.1 root 1069: break;
1.1.1.11 root 1070: case i_CMPA:
1.1.1.7 root 1071: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1072: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1 root 1073: start_brace ();
1.1.1.5 root 1074: genflags (flag_cmp, sz_long, "newv", "src", "dst");
1.1 root 1075: break;
1076: /* The next two are coded a little unconventional, but they are doing
1077: * weird things... */
1.1.1.11 root 1078: case i_MVPRM:
1.1.1.7 root 1079: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.5 root 1080:
1081: printf ("\tuaecptr memp = m68k_areg(regs, dstreg) + (uae_s32)(uae_s16)%s;\n", gen_nextiword ());
1.1.1.7 root 1082: if (curi->size == sz_word) {
1.1.1.3 root 1083: printf ("\tput_byte(memp, src >> 8); put_byte(memp + 2, src);\n");
1.1 root 1084: } else {
1.1.1.3 root 1085: printf ("\tput_byte(memp, src >> 24); put_byte(memp + 2, src >> 16);\n");
1086: printf ("\tput_byte(memp + 4, src >> 8); put_byte(memp + 6, src);\n");
1.1 root 1087: }
1088: break;
1.1.1.11 root 1089: case i_MVPMR:
1.1.1.5 root 1090: printf ("\tuaecptr memp = m68k_areg(regs, srcreg) + (uae_s32)(uae_s16)%s;\n", gen_nextiword ());
1.1.1.7 root 1091: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1092: if (curi->size == sz_word) {
1.1.1.3 root 1093: printf ("\tuae_u16 val = (get_byte(memp) << 8) + get_byte(memp + 2);\n");
1.1 root 1094: } else {
1.1.1.3 root 1095: printf ("\tuae_u32 val = (get_byte(memp) << 24) + (get_byte(memp + 2) << 16)\n");
1096: printf (" + (get_byte(memp + 4) << 8) + get_byte(memp + 6);\n");
1.1 root 1097: }
1.1.1.7 root 1098: genastore ("val", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1099: break;
1.1.1.11 root 1100: case i_MOVE:
1.1.1.7 root 1101: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1102: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1103: genflags (flag_logical, curi->size, "src", "", "");
1104: genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1105: break;
1.1.1.11 root 1106: case i_MOVEA:
1.1.1.7 root 1107: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1108: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1109: if (curi->size == sz_word) {
1.1.1.3 root 1110: printf ("\tuae_u32 val = (uae_s32)(uae_s16)src;\n");
1.1 root 1111: } else {
1.1.1.3 root 1112: printf ("\tuae_u32 val = src;\n");
1.1 root 1113: }
1.1.1.7 root 1114: genastore ("val", curi->dmode, "dstreg", sz_long, "dst");
1.1 root 1115: break;
1.1.1.11 root 1116: case i_MVSR2:
1.1.1.7 root 1117: genamode (curi->smode, "srcreg", sz_word, "src", 2, 0);
1.1.1.3 root 1118: printf ("\tMakeSR();\n");
1.1.1.7 root 1119: if (curi->size == sz_byte)
1120: genastore ("regs.sr & 0xff", curi->smode, "srcreg", sz_word, "src");
1.1 root 1121: else
1.1.1.7 root 1122: genastore ("regs.sr", curi->smode, "srcreg", sz_word, "src");
1.1 root 1123: break;
1.1.1.11 root 1124: case i_MV2SR:
1.1.1.7 root 1125: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1126: if (curi->size == sz_byte)
1.1.1.3 root 1127: printf ("\tMakeSR();\n\tregs.sr &= 0xFF00;\n\tregs.sr |= src & 0xFF;\n");
1128: else {
1129: printf ("\tregs.sr = src;\n");
1.1 root 1130: }
1.1.1.3 root 1131: printf ("\tMakeFromSR();\n");
1.1 root 1132: break;
1.1.1.11 root 1133: case i_SWAP:
1.1.1.7 root 1134: genamode (curi->smode, "srcreg", sz_long, "src", 1, 0);
1.1 root 1135: start_brace ();
1.1.1.3 root 1136: printf ("\tuae_u32 dst = ((src >> 16)&0xFFFF) | ((src&0xFFFF)<<16);\n");
1.1.1.5 root 1137: genflags (flag_logical, sz_long, "dst", "", "");
1.1.1.7 root 1138: genastore ("dst", curi->smode, "srcreg", sz_long, "src");
1.1 root 1139: break;
1.1.1.11 root 1140: case i_EXG:
1.1.1.7 root 1141: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1142: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1143: genastore ("dst", curi->smode, "srcreg", curi->size, "src");
1144: genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1145: break;
1.1.1.11 root 1146: case i_EXT:
1.1.1.7 root 1147: genamode (curi->smode, "srcreg", sz_long, "src", 1, 0);
1.1 root 1148: start_brace ();
1.1.1.7 root 1149: switch (curi->size) {
1.1.1.11 root 1150: case sz_byte: printf ("\tuae_u32 dst = (uae_s32)(uae_s8)src;\n"); break;
1151: case sz_word: printf ("\tuae_u16 dst = (uae_s16)(uae_s8)src;\n"); break;
1152: case sz_long: printf ("\tuae_u32 dst = (uae_s32)(uae_s16)src;\n"); break;
1153: default: abort ();
1.1 root 1154: }
1.1.1.5 root 1155: genflags (flag_logical,
1.1.1.7 root 1156: curi->size == sz_word ? sz_word : sz_long, "dst", "", "");
1157: genastore ("dst", curi->smode, "srcreg",
1158: curi->size == sz_word ? sz_word : sz_long, "src");
1.1 root 1159: break;
1.1.1.11 root 1160: case i_MVMEL:
1.1.1.5 root 1161: genmovemel (opcode);
1.1 root 1162: break;
1.1.1.11 root 1163: case i_MVMLE:
1.1.1.5 root 1164: genmovemle (opcode);
1.1 root 1165: break;
1.1.1.11 root 1166: case i_TRAP:
1.1.1.7 root 1167: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.5 root 1168: sync_m68k_pc ();
1.1.1.3 root 1169: printf ("\tException(src+32,0);\n");
1170: m68k_pc_offset = 0;
1.1 root 1171: break;
1.1.1.11 root 1172: case i_MVR2USP:
1.1.1.7 root 1173: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.3 root 1174: printf ("\tregs.usp = src;\n");
1.1 root 1175: break;
1.1.1.11 root 1176: case i_MVUSP2R:
1.1.1.7 root 1177: genamode (curi->smode, "srcreg", curi->size, "src", 2, 0);
1178: genastore ("regs.usp", curi->smode, "srcreg", curi->size, "src");
1.1 root 1179: break;
1.1.1.11 root 1180: case i_RESET:
1.1.1.3 root 1181: printf ("\tcustomreset();\n");
1.1 root 1182: break;
1.1.1.11 root 1183: case i_NOP:
1.1 root 1184: break;
1.1.1.11 root 1185: case i_STOP:
1.1.1.7 root 1186: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.3 root 1187: printf ("\tregs.sr = src;\n");
1188: printf ("\tMakeFromSR();\n");
1189: printf ("\tm68k_setstopped(1);\n");
1.1 root 1190: break;
1.1.1.11 root 1191: case i_RTE:
1.1.1.3 root 1192: if (cpu_level == 0) {
1193: genamode (Aipi, "7", sz_word, "sr", 1, 0);
1194: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1195: printf ("\tregs.sr = sr; m68k_setpc_rte(pc);\n");
1196: fill_prefetch_0 ();
1197: printf ("\tMakeFromSR();\n");
1198: } else {
1.1 root 1199: int old_brace_level = n_braces;
1.1.1.3 root 1200: if (next_cpu_level < 0)
1201: next_cpu_level = 0;
1202: printf ("\tuae_u16 newsr; uae_u32 newpc; for (;;) {\n");
1203: genamode (Aipi, "7", sz_word, "sr", 1, 0);
1204: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1205: genamode (Aipi, "7", sz_word, "format", 1, 0);
1206: printf ("\tnewsr = sr; newpc = pc;\n");
1207: printf ("\tif ((format & 0xF000) == 0x0000) { break; }\n");
1208: printf ("\telse if ((format & 0xF000) == 0x1000) { ; }\n");
1209: printf ("\telse if ((format & 0xF000) == 0x2000) { m68k_areg(regs, 7) += 4; break; }\n");
1210: printf ("\telse if ((format & 0xF000) == 0x8000) { m68k_areg(regs, 7) += 50; break; }\n");
1211: printf ("\telse if ((format & 0xF000) == 0x9000) { m68k_areg(regs, 7) += 12; break; }\n");
1212: printf ("\telse if ((format & 0xF000) == 0xa000) { m68k_areg(regs, 7) += 24; break; }\n");
1213: printf ("\telse if ((format & 0xF000) == 0xb000) { m68k_areg(regs, 7) += 84; break; }\n");
1214: printf ("\telse { Exception(14,0); goto %s; }\n", endlabelstr);
1215: printf ("\tregs.sr = newsr; MakeFromSR();\n}\n");
1.1 root 1216: pop_braces (old_brace_level);
1.1.1.3 root 1217: printf ("\tregs.sr = newsr; MakeFromSR();\n");
1218: printf ("\tm68k_setpc_rte(newpc);\n");
1219: fill_prefetch_0 ();
1.1.1.5 root 1220: need_endlabel = 1;
1.1 root 1221: }
1.1.1.3 root 1222: /* PC is set and prefetch filled. */
1223: m68k_pc_offset = 0;
1.1 root 1224: break;
1.1.1.11 root 1225: case i_RTD:
1.1.1.3 root 1226: printf ("\tcompiler_flush_jsr_stack();\n");
1227: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1.1.1.7 root 1228: genamode (curi->smode, "srcreg", curi->size, "offs", 1, 0);
1.1.1.3 root 1229: printf ("\tm68k_areg(regs, 7) += offs;\n");
1230: printf ("\tm68k_setpc_rte(pc);\n");
1231: fill_prefetch_0 ();
1232: /* PC is set and prefetch filled. */
1233: m68k_pc_offset = 0;
1.1 root 1234: break;
1.1.1.11 root 1235: case i_LINK:
1.1.1.3 root 1236: genamode (Apdi, "7", sz_long, "old", 2, 0);
1.1.1.7 root 1237: genamode (curi->smode, "srcreg", sz_long, "src", 1, 0);
1.1.1.3 root 1238: genastore ("src", Apdi, "7", sz_long, "old");
1.1.1.7 root 1239: genastore ("m68k_areg(regs, 7)", curi->smode, "srcreg", sz_long, "src");
1240: genamode (curi->dmode, "dstreg", curi->size, "offs", 1, 0);
1.1.1.3 root 1241: printf ("\tm68k_areg(regs, 7) += offs;\n");
1.1 root 1242: break;
1.1.1.11 root 1243: case i_UNLK:
1.1.1.7 root 1244: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.3 root 1245: printf ("\tm68k_areg(regs, 7) = src;\n");
1246: genamode (Aipi, "7", sz_long, "old", 1, 0);
1.1.1.7 root 1247: genastore ("old", curi->smode, "srcreg", curi->size, "src");
1.1 root 1248: break;
1.1.1.11 root 1249: case i_RTS:
1.1.1.3 root 1250: printf ("\tm68k_do_rts();\n");
1251: fill_prefetch_0 ();
1252: m68k_pc_offset = 0;
1.1 root 1253: break;
1.1.1.11 root 1254: case i_TRAPV:
1.1.1.3 root 1255: sync_m68k_pc ();
1.1.1.7 root 1256: printf ("\tif (GET_VFLG) { Exception(7,m68k_getpc()); goto %s; }\n", endlabelstr);
1.1.1.5 root 1257: need_endlabel = 1;
1.1 root 1258: break;
1.1.1.11 root 1259: case i_RTR:
1.1.1.3 root 1260: printf ("\tcompiler_flush_jsr_stack();\n");
1261: printf ("\tMakeSR();\n");
1262: genamode (Aipi, "7", sz_word, "sr", 1, 0);
1263: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1264: printf ("\tregs.sr &= 0xFF00; sr &= 0xFF;\n");
1265: printf ("\tregs.sr |= sr; m68k_setpc(pc);\n");
1266: fill_prefetch_0 ();
1267: printf ("\tMakeFromSR();\n");
1268: m68k_pc_offset = 0;
1.1 root 1269: break;
1.1.1.11 root 1270: case i_JSR:
1.1.1.7 root 1271: genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
1.1.1.3 root 1272: printf ("\tm68k_do_jsr(m68k_getpc() + %d, srca);\n", m68k_pc_offset);
1273: fill_prefetch_0 ();
1274: m68k_pc_offset = 0;
1275: break;
1.1.1.11 root 1276: case i_JMP:
1.1.1.7 root 1277: genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
1.1.1.3 root 1278: printf ("\tm68k_setpc(srca);\n");
1279: fill_prefetch_0 ();
1280: m68k_pc_offset = 0;
1.1 root 1281: break;
1.1.1.11 root 1282: case i_BSR:
1.1.1.7 root 1283: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.3 root 1284: printf ("\tuae_s32 s = (uae_s32)src + 2;\n");
1285: if (using_exception_3) {
1286: printf ("\tif (src & 1) {\n");
1287: printf ("\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1288: printf ("\t\tlast_fault_for_exception_3 = m68k_getpc() + s;\n");
1289: printf ("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1290: printf ("\t}\n");
1.1.1.5 root 1291: need_endlabel = 1;
1.1.1.3 root 1292: }
1293: printf ("\tm68k_do_bsr(m68k_getpc() + %d, s);\n", m68k_pc_offset);
1294: fill_prefetch_0 ();
1295: m68k_pc_offset = 0;
1.1 root 1296: break;
1.1.1.11 root 1297: case i_Bcc:
1.1.1.7 root 1298: if (curi->size == sz_long) {
1.1.1.3 root 1299: if (cpu_level < 2) {
1300: printf ("\tm68k_incpc(2);\n");
1.1.1.7 root 1301: printf ("\tif (!cctrue(%d)) goto %s;\n", curi->cc, endlabelstr);
1.1.1.3 root 1302: printf ("\t\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1303: printf ("\t\tlast_fault_for_exception_3 = m68k_getpc() + 1;\n");
1304: printf ("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1.1.1.5 root 1305: need_endlabel = 1;
1.1.1.3 root 1306: } else {
1307: if (next_cpu_level < 1)
1308: next_cpu_level = 1;
1309: }
1310: }
1.1.1.7 root 1311: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1312: printf ("\tif (!cctrue(%d)) goto didnt_jump;\n", curi->cc);
1.1.1.3 root 1313: if (using_exception_3) {
1314: printf ("\tif (src & 1) {\n");
1315: printf ("\t\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1316: printf ("\t\tlast_fault_for_exception_3 = m68k_getpc() + 2 + (uae_s32)src;\n");
1317: printf ("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1318: printf ("\t}\n");
1.1.1.5 root 1319: need_endlabel = 1;
1.1.1.3 root 1320: }
1.1 root 1321: #ifdef USE_COMPILER
1.1.1.3 root 1322: printf ("\tm68k_setpc_bcc(m68k_getpc() + 2 + (uae_s32)src);\n");
1.1 root 1323: #else
1.1.1.3 root 1324: printf ("\tm68k_incpc ((uae_s32)src + 2);\n");
1.1 root 1325: #endif
1.1.1.3 root 1326: fill_prefetch_0 ();
1.1.1.14! root 1327: printf ("\treturn 5 * CYCLE_UNIT;\n");
1.1.1.3 root 1328: printf ("didnt_jump:;\n");
1.1.1.5 root 1329: need_endlabel = 1;
1.1.1.11 root 1330: insn_n_cycles = curi->size == sz_byte ? 8 : 12;
1.1 root 1331: break;
1.1.1.11 root 1332: case i_LEA:
1.1.1.7 root 1333: genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
1334: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1335: genastore ("srca", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1336: break;
1.1.1.11 root 1337: case i_PEA:
1.1.1.7 root 1338: genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
1.1.1.3 root 1339: genamode (Apdi, "7", sz_long, "dst", 2, 0);
1340: genastore ("srca", Apdi, "7", sz_long, "dst");
1.1 root 1341: break;
1.1.1.11 root 1342: case i_DBcc:
1.1.1.7 root 1343: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1344: genamode (curi->dmode, "dstreg", curi->size, "offs", 1, 0);
1.1.1.3 root 1345:
1.1.1.7 root 1346: printf ("\tif (!cctrue(%d)) {\n", curi->cc);
1347: genastore ("(src-1)", curi->smode, "srcreg", curi->size, "src");
1.1.1.3 root 1348:
1349: printf ("\t\tif (src) {\n");
1350: if (using_exception_3) {
1351: printf ("\t\t\tif (offs & 1) {\n");
1352: printf ("\t\t\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1353: printf ("\t\t\tlast_fault_for_exception_3 = m68k_getpc() + 2 + (uae_s32)offs + 2;\n");
1354: printf ("\t\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1355: printf ("\t\t}\n");
1.1.1.5 root 1356: need_endlabel = 1;
1.1.1.3 root 1357: }
1.1 root 1358: #ifdef USE_COMPILER
1.1.1.3 root 1359: printf ("\t\t\tm68k_setpc_bcc(m68k_getpc() + (uae_s32)offs + 2);\n");
1.1 root 1360: #else
1.1.1.3 root 1361: printf ("\t\t\tm68k_incpc((uae_s32)offs + 2);\n");
1.1 root 1362: #endif
1.1.1.3 root 1363: fill_prefetch_0 ();
1.1.1.11 root 1364: /* ??? Cycle count is a guess. */
1.1.1.14! root 1365: printf ("\t\treturn 6 * CYCLE_UNIT;\n");
1.1.1.3 root 1366: printf ("\t\t}\n");
1367: printf ("\t}\n");
1.1.1.11 root 1368: insn_n_cycles = 12;
1.1.1.5 root 1369: need_endlabel = 1;
1.1 root 1370: break;
1.1.1.11 root 1371: case i_Scc:
1.1.1.7 root 1372: genamode (curi->smode, "srcreg", curi->size, "src", 2, 0);
1.1 root 1373: start_brace ();
1.1.1.7 root 1374: printf ("\tint val = cctrue(%d) ? 0xff : 0;\n", curi->cc);
1375: genastore ("val", curi->smode, "srcreg", curi->size, "src");
1.1 root 1376: break;
1.1.1.11 root 1377: case i_DIVU:
1.1.1.3 root 1378: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1379: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1380: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1.1.10 root 1381: sync_m68k_pc ();
1.1.1.9 root 1382: /* Clear V flag when dividing by zero - Alcatraz Odyssey demo depends
1383: * on this (actually, it's doing a DIVS). */
1384: printf ("\tif (src == 0) { SET_VFLG (0); Exception (5, oldpc); goto %s; } else {\n", endlabelstr);
1.1.1.3 root 1385: printf ("\tuae_u32 newv = (uae_u32)dst / (uae_u32)(uae_u16)src;\n");
1386: printf ("\tuae_u32 rem = (uae_u32)dst %% (uae_u32)(uae_u16)src;\n");
1.1 root 1387: /* The N flag appears to be set each time there is an overflow.
1388: * Weird. */
1.1.1.7 root 1389: printf ("\tif (newv > 0xffff) { SET_VFLG (1); SET_NFLG (1); SET_CFLG (0); } else\n\t{\n");
1.1.1.5 root 1390: genflags (flag_logical, sz_word, "newv", "", "");
1.1.1.3 root 1391: printf ("\tnewv = (newv & 0xffff) | ((uae_u32)rem << 16);\n");
1.1.1.7 root 1392: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1.1.3 root 1393: printf ("\t}\n");
1394: printf ("\t}\n");
1.1.1.11 root 1395: insn_n_cycles += 136;
1.1.1.5 root 1396: need_endlabel = 1;
1.1.1.3 root 1397: break;
1.1.1.11 root 1398: case i_DIVS:
1.1.1.3 root 1399: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1400: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1401: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1.1.10 root 1402: sync_m68k_pc ();
1.1.1.9 root 1403: printf ("\tif (src == 0) { SET_VFLG (0); Exception(5,oldpc); goto %s; } else {\n", endlabelstr);
1.1.1.3 root 1404: printf ("\tuae_s32 newv = (uae_s32)dst / (uae_s32)(uae_s16)src;\n");
1405: printf ("\tuae_u16 rem = (uae_s32)dst %% (uae_s32)(uae_s16)src;\n");
1.1.1.7 root 1406: 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 1407: printf ("\tif (((uae_s16)rem < 0) != ((uae_s32)dst < 0)) rem = -rem;\n");
1.1.1.5 root 1408: genflags (flag_logical, sz_word, "newv", "", "");
1.1.1.3 root 1409: printf ("\tnewv = (newv & 0xffff) | ((uae_u32)rem << 16);\n");
1.1.1.7 root 1410: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1.1.3 root 1411: printf ("\t}\n");
1412: printf ("\t}\n");
1.1.1.11 root 1413: insn_n_cycles += 154;
1.1.1.5 root 1414: need_endlabel = 1;
1.1.1.3 root 1415: break;
1.1.1.11 root 1416: case i_MULU:
1.1.1.7 root 1417: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1418: genamode (curi->dmode, "dstreg", sz_word, "dst", 1, 0);
1.1 root 1419: start_brace ();
1.1.1.3 root 1420: printf ("\tuae_u32 newv = (uae_u32)(uae_u16)dst * (uae_u32)(uae_u16)src;\n");
1.1.1.5 root 1421: genflags (flag_logical, sz_long, "newv", "", "");
1.1.1.7 root 1422: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1.1.11 root 1423: insn_n_cycles += 66;
1.1 root 1424: break;
1.1.1.11 root 1425: case i_MULS:
1.1.1.7 root 1426: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1427: genamode (curi->dmode, "dstreg", sz_word, "dst", 1, 0);
1.1 root 1428: start_brace ();
1.1.1.3 root 1429: printf ("\tuae_u32 newv = (uae_s32)(uae_s16)dst * (uae_s32)(uae_s16)src;\n");
1.1.1.5 root 1430: genflags (flag_logical, sz_long, "newv", "", "");
1.1.1.7 root 1431: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1.1.11 root 1432: insn_n_cycles += 66;
1.1 root 1433: break;
1.1.1.11 root 1434: case i_CHK:
1.1.1.3 root 1435: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1436: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1437: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1438: printf ("\tif ((uae_s32)dst < 0) { SET_NFLG (1); Exception(6,oldpc); goto %s; }\n", endlabelstr);
1439: printf ("\telse if (dst > src) { SET_NFLG (0); Exception(6,oldpc); goto %s; }\n", endlabelstr);
1.1.1.5 root 1440: need_endlabel = 1;
1.1 root 1441: break;
1.1.1.3 root 1442:
1.1.1.11 root 1443: case i_CHK2:
1.1.1.3 root 1444: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1445: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1446: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1.1.1.3 root 1447: printf ("\t{uae_s32 upper,lower,reg = regs.regs[(extra >> 12) & 15];\n");
1.1.1.7 root 1448: switch (curi->size) {
1.1.1.11 root 1449: case sz_byte:
1.1.1.3 root 1450: printf ("\tlower=(uae_s32)(uae_s8)get_byte(dsta); upper = (uae_s32)(uae_s8)get_byte(dsta+1);\n");
1451: printf ("\tif ((extra & 0x8000) == 0) reg = (uae_s32)(uae_s8)reg;\n");
1452: break;
1.1.1.11 root 1453: case sz_word:
1.1.1.3 root 1454: printf ("\tlower=(uae_s32)(uae_s16)get_word(dsta); upper = (uae_s32)(uae_s16)get_word(dsta+2);\n");
1455: printf ("\tif ((extra & 0x8000) == 0) reg = (uae_s32)(uae_s16)reg;\n");
1456: break;
1.1.1.11 root 1457: case sz_long:
1.1.1.3 root 1458: printf ("\tlower=get_long(dsta); upper = get_long(dsta+4);\n");
1459: break;
1.1.1.11 root 1460: default:
1.1.1.5 root 1461: abort ();
1.1.1.3 root 1462: }
1.1.1.7 root 1463: printf ("\tSET_ZFLG (upper == reg || lower == reg);\n");
1464: printf ("\tSET_CFLG (lower <= upper ? reg < lower || reg > upper : reg > upper || reg < lower);\n");
1465: printf ("\tif ((extra & 0x800) && GET_CFLG) { Exception(6,oldpc); goto %s; }\n}\n", endlabelstr);
1.1.1.5 root 1466: need_endlabel = 1;
1.1.1.3 root 1467: break;
1468:
1.1.1.11 root 1469: case i_ASR:
1.1.1.7 root 1470: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1471: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1.1.3 root 1472: start_brace ();
1.1.1.7 root 1473: switch (curi->size) {
1.1.1.11 root 1474: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1475: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1476: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1477: default: abort ();
1.1 root 1478: }
1.1.1.7 root 1479: printf ("\tuae_u32 sign = (%s & val) >> %d;\n", cmask (curi->size), bit_size (curi->size) - 1);
1.1.1.3 root 1480: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1481: printf ("\tCLEAR_CZNV;\n");
1482: printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
1483: printf ("\t\tval = %s & (uae_u32)-sign;\n", bit_mask (curi->size));
1484: printf ("\t\tSET_CFLG (sign);\n");
1485: duplicate_carry ();
1486: if (source_is_imm1_8 (curi))
1487: printf ("\t} else {\n");
1488: else
1489: printf ("\t} else if (cnt > 0) {\n");
1490: printf ("\t\tval >>= cnt - 1;\n");
1491: printf ("\t\tSET_CFLG (val & 1);\n");
1492: duplicate_carry ();
1493: printf ("\t\tval >>= 1;\n");
1494: printf ("\t\tval |= (%s << (%d - cnt)) & (uae_u32)-sign;\n",
1495: bit_mask (curi->size),
1496: bit_size (curi->size));
1497: printf ("\t\tval &= %s;\n", bit_mask (curi->size));
1498: printf ("\t}\n");
1499: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1500: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1501: break;
1.1.1.11 root 1502: case i_ASL:
1.1.1.7 root 1503: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1504: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1505: start_brace ();
1.1.1.7 root 1506: switch (curi->size) {
1.1.1.11 root 1507: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1508: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1509: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1510: default: abort ();
1.1 root 1511: }
1.1.1.3 root 1512: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1513: printf ("\tCLEAR_CZNV;\n");
1514: printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
1515: printf ("\t\tSET_VFLG (val != 0);\n");
1516: printf ("\t\tSET_CFLG (cnt == %d ? val & 1 : 0);\n",
1517: bit_size (curi->size));
1518: duplicate_carry ();
1.1.1.3 root 1519: printf ("\t\tval = 0;\n");
1.1.1.7 root 1520: if (source_is_imm1_8 (curi))
1521: printf ("\t} else {\n");
1522: else
1523: printf ("\t} else if (cnt > 0) {\n");
1.1.1.3 root 1524: printf ("\t\tuae_u32 mask = (%s << (%d - cnt)) & %s;\n",
1.1.1.7 root 1525: bit_mask (curi->size),
1526: bit_size (curi->size) - 1,
1527: bit_mask (curi->size));
1528: printf ("\t\tSET_VFLG ((val & mask) != mask && (val & mask) != 0);\n");
1529: printf ("\t\tval <<= cnt - 1;\n");
1530: printf ("\t\tSET_CFLG ((val & %s) >> %d);\n", cmask (curi->size), bit_size (curi->size) - 1);
1531: duplicate_carry ();
1532: printf ("\t\tval <<= 1;\n");
1533: printf ("\t\tval &= %s;\n", bit_mask (curi->size));
1534: printf ("\t}\n");
1535: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1536: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1537: break;
1.1.1.11 root 1538: case i_LSR:
1.1.1.7 root 1539: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1540: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1541: start_brace ();
1.1.1.7 root 1542: switch (curi->size) {
1.1.1.11 root 1543: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1544: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1545: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1546: default: abort ();
1.1 root 1547: }
1.1.1.3 root 1548: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1549: printf ("\tCLEAR_CZNV;\n");
1550: printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
1551: printf ("\t\tSET_CFLG ((cnt == %d) & (val >> %d));\n",
1552: bit_size (curi->size), bit_size (curi->size) - 1);
1553: duplicate_carry ();
1.1.1.3 root 1554: printf ("\t\tval = 0;\n");
1.1.1.7 root 1555: if (source_is_imm1_8 (curi))
1556: printf ("\t} else {\n");
1557: else
1558: printf ("\t} else if (cnt > 0) {\n");
1559: printf ("\t\tval >>= cnt - 1;\n");
1560: printf ("\t\tSET_CFLG (val & 1);\n");
1561: duplicate_carry ();
1562: printf ("\t\tval >>= 1;\n");
1563: printf ("\t}\n");
1564: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1565: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1566: break;
1.1.1.11 root 1567: case i_LSL:
1.1.1.7 root 1568: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1569: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1570: start_brace ();
1.1.1.7 root 1571: switch (curi->size) {
1.1.1.11 root 1572: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1573: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1574: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1575: default: abort ();
1.1 root 1576: }
1.1.1.3 root 1577: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1578: printf ("\tCLEAR_CZNV;\n");
1579: printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
1580: printf ("\t\tSET_CFLG (cnt == %d ? val & 1 : 0);\n",
1581: bit_size (curi->size));
1582: duplicate_carry ();
1.1.1.3 root 1583: printf ("\t\tval = 0;\n");
1.1.1.7 root 1584: if (source_is_imm1_8 (curi))
1585: printf ("\t} else {\n");
1586: else
1587: printf ("\t} else if (cnt > 0) {\n");
1588: printf ("\t\tval <<= (cnt - 1);\n");
1589: printf ("\t\tSET_CFLG ((val & %s) >> %d);\n", cmask (curi->size), bit_size (curi->size) - 1);
1590: duplicate_carry ();
1591: printf ("\t\tval <<= 1;\n");
1592: printf ("\tval &= %s;\n", bit_mask (curi->size));
1593: printf ("\t}\n");
1594: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1595: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1596: break;
1.1.1.11 root 1597: case i_ROL:
1.1.1.7 root 1598: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1599: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1600: start_brace ();
1.1.1.7 root 1601: switch (curi->size) {
1.1.1.11 root 1602: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1603: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1604: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1605: default: abort ();
1.1 root 1606: }
1.1.1.3 root 1607: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1608: printf ("\tCLEAR_CZNV;\n");
1609: if (source_is_imm1_8 (curi))
1610: printf ("{");
1611: else
1612: printf ("\tif (cnt > 0) {\n");
1613: printf ("\tuae_u32 loval;\n");
1614: printf ("\tcnt &= %d;\n", bit_size (curi->size) - 1);
1615: printf ("\tloval = val >> (%d - cnt);\n", bit_size (curi->size));
1616: printf ("\tval <<= cnt;\n");
1617: printf ("\tval |= loval;\n");
1618: printf ("\tval &= %s;\n", bit_mask (curi->size));
1619: printf ("\tSET_CFLG (val & 1);\n");
1620: printf ("}\n");
1621: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1622: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1623: break;
1.1.1.11 root 1624: case i_ROR:
1.1.1.7 root 1625: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1626: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1627: start_brace ();
1.1.1.7 root 1628: switch (curi->size) {
1.1.1.11 root 1629: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1630: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1631: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1632: default: abort ();
1.1 root 1633: }
1.1.1.3 root 1634: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1635: printf ("\tCLEAR_CZNV;\n");
1636: if (source_is_imm1_8 (curi))
1637: printf ("{");
1638: else
1639: printf ("\tif (cnt > 0) {");
1640: printf ("\tuae_u32 hival;\n");
1641: printf ("\tcnt &= %d;\n", bit_size (curi->size) - 1);
1642: printf ("\thival = val << (%d - cnt);\n", bit_size (curi->size));
1643: printf ("\tval >>= cnt;\n");
1644: printf ("\tval |= hival;\n");
1645: printf ("\tval &= %s;\n", bit_mask (curi->size));
1646: printf ("\tSET_CFLG ((val & %s) >> %d);\n", cmask (curi->size), bit_size (curi->size) - 1);
1.1.1.3 root 1647: printf ("\t}\n");
1.1.1.7 root 1648: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1649: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1650: break;
1.1.1.11 root 1651: case i_ROXL:
1.1.1.7 root 1652: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1653: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1654: start_brace ();
1.1.1.7 root 1655: switch (curi->size) {
1.1.1.11 root 1656: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1657: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1658: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1659: default: abort ();
1.1 root 1660: }
1.1.1.3 root 1661: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1662: printf ("\tCLEAR_CZNV;\n");
1663: if (source_is_imm1_8 (curi))
1664: printf ("{");
1.1.1.12 root 1665: else {
1666: force_range_for_rox ("cnt", curi->size);
1.1.1.7 root 1667: printf ("\tif (cnt > 0) {\n");
1.1.1.12 root 1668: }
1.1.1.7 root 1669: printf ("\tcnt--;\n");
1670: printf ("\t{\n\tuae_u32 carry;\n");
1671: printf ("\tuae_u32 loval = val >> (%d - cnt);\n", bit_size (curi->size) - 1);
1672: printf ("\tcarry = loval & 1;\n");
1673: printf ("\tval = (((val << 1) | GET_XFLG) << cnt) | (loval >> 1);\n");
1674: printf ("\tSET_XFLG (carry);\n");
1675: printf ("\tval &= %s;\n", bit_mask (curi->size));
1676: printf ("\t} }\n");
1677: printf ("\tSET_CFLG (GET_XFLG);\n");
1678: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1679: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1680: break;
1.1.1.11 root 1681: case i_ROXR:
1.1.1.7 root 1682: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1683: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1684: start_brace ();
1.1.1.7 root 1685: switch (curi->size) {
1.1.1.11 root 1686: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1687: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1688: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1689: default: abort ();
1.1 root 1690: }
1.1.1.3 root 1691: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1692: printf ("\tCLEAR_CZNV;\n");
1693: if (source_is_imm1_8 (curi))
1694: printf ("{");
1.1.1.12 root 1695: else {
1696: force_range_for_rox ("cnt", curi->size);
1.1.1.7 root 1697: printf ("\tif (cnt > 0) {\n");
1.1.1.12 root 1698: }
1.1.1.7 root 1699: printf ("\tcnt--;\n");
1700: printf ("\t{\n\tuae_u32 carry;\n");
1701: printf ("\tuae_u32 hival = (val << 1) | GET_XFLG;\n");
1702: printf ("\thival <<= (%d - cnt);\n", bit_size (curi->size) - 1);
1703: printf ("\tval >>= cnt;\n");
1704: printf ("\tcarry = val & 1;\n");
1705: printf ("\tval >>= 1;\n");
1706: printf ("\tval |= hival;\n");
1707: printf ("\tSET_XFLG (carry);\n");
1708: printf ("\tval &= %s;\n", bit_mask (curi->size));
1709: printf ("\t} }\n");
1710: printf ("\tSET_CFLG (GET_XFLG);\n");
1711: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1712: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1713: break;
1.1.1.11 root 1714: case i_ASRW:
1.1.1.7 root 1715: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1716: start_brace ();
1.1.1.7 root 1717: switch (curi->size) {
1.1.1.11 root 1718: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1719: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1720: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1721: default: abort ();
1.1 root 1722: }
1.1.1.7 root 1723: printf ("\tuae_u32 sign = %s & val;\n", cmask (curi->size));
1724: printf ("\tuae_u32 cflg = val & 1;\n");
1725: printf ("\tval = (val >> 1) | sign;\n");
1726: genflags (flag_logical, curi->size, "val", "", "");
1727: printf ("\tSET_CFLG (cflg);\n");
1728: duplicate_carry ();
1729: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1730: break;
1.1.1.11 root 1731: case i_ASLW:
1.1.1.7 root 1732: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1733: start_brace ();
1.1.1.7 root 1734: switch (curi->size) {
1.1.1.11 root 1735: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1736: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1737: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1738: default: abort ();
1.1 root 1739: }
1.1.1.7 root 1740: printf ("\tuae_u32 sign = %s & val;\n", cmask (curi->size));
1741: printf ("\tuae_u32 sign2;\n");
1742: printf ("\tval <<= 1;\n");
1743: genflags (flag_logical, curi->size, "val", "", "");
1744: printf ("\tsign2 = %s & val;\n", cmask (curi->size));
1745: printf ("\tSET_CFLG (sign != 0);\n");
1746: duplicate_carry ();
1747:
1748: printf ("\tSET_VFLG (GET_VFLG | (sign2 != sign));\n");
1749: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1750: break;
1.1.1.11 root 1751: case i_LSRW:
1.1.1.7 root 1752: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1753: start_brace ();
1.1.1.7 root 1754: switch (curi->size) {
1.1.1.11 root 1755: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1756: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1757: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1758: default: abort ();
1.1 root 1759: }
1.1.1.7 root 1760: printf ("\tuae_u32 carry = val & 1;\n");
1.1.1.3 root 1761: printf ("\tval >>= 1;\n");
1.1.1.7 root 1762: genflags (flag_logical, curi->size, "val", "", "");
1763: printf ("SET_CFLG (carry);\n");
1764: duplicate_carry ();
1765: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1766: break;
1.1.1.11 root 1767: case i_LSLW:
1.1.1.7 root 1768: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1769: start_brace ();
1.1.1.7 root 1770: switch (curi->size) {
1.1.1.11 root 1771: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1772: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1773: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1774: default: abort ();
1.1 root 1775: }
1.1.1.7 root 1776: printf ("\tuae_u32 carry = val & %s;\n", cmask (curi->size));
1.1.1.3 root 1777: printf ("\tval <<= 1;\n");
1.1.1.7 root 1778: genflags (flag_logical, curi->size, "val", "", "");
1779: printf ("SET_CFLG (carry >> %d);\n", bit_size (curi->size) - 1);
1780: duplicate_carry ();
1781: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1782: break;
1.1.1.11 root 1783: case i_ROLW:
1.1.1.7 root 1784: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1785: start_brace ();
1.1.1.7 root 1786: switch (curi->size) {
1.1.1.11 root 1787: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1788: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1789: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1790: default: abort ();
1.1 root 1791: }
1.1.1.7 root 1792: printf ("\tuae_u32 carry = val & %s;\n", cmask (curi->size));
1.1.1.3 root 1793: printf ("\tval <<= 1;\n");
1.1.1.7 root 1794: printf ("\tif (carry) val |= 1;\n");
1795: genflags (flag_logical, curi->size, "val", "", "");
1796: printf ("SET_CFLG (carry >> %d);\n", bit_size (curi->size) - 1);
1797: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1798: break;
1.1.1.11 root 1799: case i_RORW:
1.1.1.7 root 1800: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1801: start_brace ();
1.1.1.7 root 1802: switch (curi->size) {
1.1.1.11 root 1803: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1804: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1805: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1806: default: abort ();
1.1 root 1807: }
1.1.1.7 root 1808: printf ("\tuae_u32 carry = val & 1;\n");
1.1.1.3 root 1809: printf ("\tval >>= 1;\n");
1.1.1.7 root 1810: printf ("\tif (carry) val |= %s;\n", cmask (curi->size));
1811: genflags (flag_logical, curi->size, "val", "", "");
1812: printf ("SET_CFLG (carry);\n");
1813: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1814: break;
1.1.1.11 root 1815: case i_ROXLW:
1.1.1.7 root 1816: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1817: start_brace ();
1.1.1.7 root 1818: switch (curi->size) {
1.1.1.11 root 1819: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1820: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1821: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1822: default: abort ();
1.1 root 1823: }
1.1.1.7 root 1824: printf ("\tuae_u32 carry = val & %s;\n", cmask (curi->size));
1.1.1.3 root 1825: printf ("\tval <<= 1;\n");
1.1.1.7 root 1826: printf ("\tif (GET_XFLG) val |= 1;\n");
1827: genflags (flag_logical, curi->size, "val", "", "");
1828: printf ("SET_CFLG (carry >> %d);\n", bit_size (curi->size) - 1);
1829: duplicate_carry ();
1830: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1831: break;
1.1.1.11 root 1832: case i_ROXRW:
1.1.1.7 root 1833: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1834: start_brace ();
1.1.1.7 root 1835: switch (curi->size) {
1.1.1.11 root 1836: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1837: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1838: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1839: default: abort ();
1.1 root 1840: }
1.1.1.7 root 1841: printf ("\tuae_u32 carry = val & 1;\n");
1.1.1.3 root 1842: printf ("\tval >>= 1;\n");
1.1.1.7 root 1843: printf ("\tif (GET_XFLG) val |= %s;\n", cmask (curi->size));
1844: genflags (flag_logical, curi->size, "val", "", "");
1845: printf ("SET_CFLG (carry);\n");
1846: duplicate_carry ();
1847: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1848: break;
1.1.1.11 root 1849: case i_MOVEC2:
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_movec2(src & 0xFFF, regp)) goto %s;\n", endlabelstr);
1.1 root 1855: break;
1.1.1.11 root 1856: case i_MOVE2C:
1.1.1.7 root 1857: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.5 root 1858: start_brace ();
1.1.1.3 root 1859: printf ("\tint regno = (src >> 12) & 15;\n");
1860: printf ("\tuae_u32 *regp = regs.regs + regno;\n");
1.1.1.9 root 1861: printf ("\tif (! m68k_move2c(src & 0xFFF, regp)) goto %s;\n", endlabelstr);
1.1 root 1862: break;
1.1.1.11 root 1863: case i_CAS:
1864: {
1865: int old_brace_level;
1866: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1867: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1868: start_brace ();
1869: printf ("\tint ru = (src >> 6) & 7;\n");
1870: printf ("\tint rc = src & 7;\n");
1871: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, rc)", "dst");
1872: printf ("\tif (GET_ZFLG)");
1873: old_brace_level = n_braces;
1874: start_brace ();
1875: genastore ("(m68k_dreg(regs, ru))", curi->dmode, "dstreg", curi->size, "dst");
1876: pop_braces (old_brace_level);
1877: printf ("else");
1878: start_brace ();
1879: printf ("m68k_dreg(regs, rc) = dst;\n");
1880: pop_braces (old_brace_level);
1881: }
1882: break;
1883: case i_CAS2:
1.1.1.7 root 1884: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.8 root 1885: printf ("\tuae_u32 rn1 = regs.regs[(extra >> 28) & 15];\n");
1886: printf ("\tuae_u32 rn2 = regs.regs[(extra >> 12) & 15];\n");
1.1.1.7 root 1887: if (curi->size == sz_word) {
1.1.1.5 root 1888: int old_brace_level = n_braces;
1889: printf ("\tuae_u16 dst1 = get_word(rn1), dst2 = get_word(rn2);\n");
1.1.1.7 root 1890: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, (extra >> 16) & 7)", "dst1");
1891: printf ("\tif (GET_ZFLG) {\n");
1892: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, extra & 7)", "dst2");
1893: printf ("\tif (GET_ZFLG) {\n");
1.1.1.5 root 1894: printf ("\tput_word(rn1, m68k_dreg(regs, (extra >> 22) & 7));\n");
1895: printf ("\tput_word(rn1, m68k_dreg(regs, (extra >> 6) & 7));\n");
1896: printf ("\t}}\n");
1897: pop_braces (old_brace_level);
1.1.1.7 root 1898: printf ("\tif (! GET_ZFLG) {\n");
1.1.1.5 root 1899: printf ("\tm68k_dreg(regs, (extra >> 22) & 7) = (m68k_dreg(regs, (extra >> 22) & 7) & ~0xffff) | (dst1 & 0xffff);\n");
1900: printf ("\tm68k_dreg(regs, (extra >> 6) & 7) = (m68k_dreg(regs, (extra >> 6) & 7) & ~0xffff) | (dst2 & 0xffff);\n");
1901: printf ("\t}\n");
1.1 root 1902: } else {
1.1.1.5 root 1903: int old_brace_level = n_braces;
1904: printf ("\tuae_u32 dst1 = get_long(rn1), dst2 = get_long(rn2);\n");
1.1.1.7 root 1905: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, (extra >> 16) & 7)", "dst1");
1906: printf ("\tif (GET_ZFLG) {\n");
1907: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, extra & 7)", "dst2");
1908: printf ("\tif (GET_ZFLG) {\n");
1.1.1.5 root 1909: printf ("\tput_long(rn1, m68k_dreg(regs, (extra >> 22) & 7));\n");
1910: printf ("\tput_long(rn1, m68k_dreg(regs, (extra >> 6) & 7));\n");
1911: printf ("\t}}\n");
1912: pop_braces (old_brace_level);
1.1.1.7 root 1913: printf ("\tif (! GET_ZFLG) {\n");
1.1.1.5 root 1914: printf ("\tm68k_dreg(regs, (extra >> 22) & 7) = dst1;\n");
1915: printf ("\tm68k_dreg(regs, (extra >> 6) & 7) = dst2;\n");
1916: printf ("\t}\n");
1.1 root 1917: }
1918: break;
1.1.1.11 root 1919: case i_MOVES: /* ignore DFC and SFC because we have no MMU */
1920: {
1921: int old_brace_level;
1922: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1923: printf ("\tif (extra & 0x800)\n");
1924: old_brace_level = n_braces;
1925: start_brace ();
1926: printf ("\tuae_u32 src = regs.regs[(extra >> 12) & 15];\n");
1927: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1928: genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
1929: pop_braces (old_brace_level);
1930: printf ("else");
1931: start_brace ();
1932: genamode (curi->dmode, "dstreg", curi->size, "src", 1, 0);
1933: printf ("\tif (extra & 0x8000) {\n");
1934: switch (curi->size) {
1935: case sz_byte: printf ("\tm68k_areg(regs, (extra >> 12) & 7) = (uae_s32)(uae_s8)src;\n"); break;
1936: case sz_word: printf ("\tm68k_areg(regs, (extra >> 12) & 7) = (uae_s32)(uae_s16)src;\n"); break;
1937: case sz_long: printf ("\tm68k_areg(regs, (extra >> 12) & 7) = src;\n"); break;
1938: default: abort ();
1.1 root 1939: }
1.1.1.11 root 1940: printf ("\t} else {\n");
1941: genastore ("src", Dreg, "(extra >> 12) & 7", curi->size, "");
1942: printf ("\t}\n");
1943: pop_braces (old_brace_level);
1944: }
1945: break;
1946: case i_BKPT: /* only needed for hardware emulators */
1.1.1.5 root 1947: sync_m68k_pc ();
1.1.1.3 root 1948: printf ("\top_illg(opcode);\n");
1.1 root 1949: break;
1.1.1.11 root 1950: case i_CALLM: /* not present in 68030 */
1.1.1.5 root 1951: sync_m68k_pc ();
1.1.1.3 root 1952: printf ("\top_illg(opcode);\n");
1.1 root 1953: break;
1.1.1.11 root 1954: case i_RTM: /* not present in 68030 */
1.1.1.5 root 1955: sync_m68k_pc ();
1.1.1.3 root 1956: printf ("\top_illg(opcode);\n");
1.1 root 1957: break;
1.1.1.11 root 1958: case i_TRAPcc:
1.1.1.7 root 1959: if (curi->smode != am_unknown && curi->smode != am_illg)
1960: genamode (curi->smode, "srcreg", curi->size, "dummy", 1, 0);
1961: printf ("\tif (cctrue(%d)) { Exception(7,m68k_getpc()); goto %s; }\n", curi->cc, endlabelstr);
1.1.1.5 root 1962: need_endlabel = 1;
1.1 root 1963: break;
1.1.1.11 root 1964: case i_DIVL:
1.1.1.3 root 1965: sync_m68k_pc ();
1966: start_brace ();
1967: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1968: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1969: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1.1.5 root 1970: sync_m68k_pc ();
1.1.1.3 root 1971: printf ("\tm68k_divl(opcode, dst, extra, oldpc);\n");
1.1 root 1972: break;
1.1.1.11 root 1973: case i_MULL:
1.1.1.7 root 1974: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1975: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1.1.5 root 1976: sync_m68k_pc ();
1.1.1.3 root 1977: printf ("\tm68k_mull(opcode, dst, extra);\n");
1.1 root 1978: break;
1.1.1.11 root 1979: case i_BFTST:
1980: case i_BFEXTU:
1981: case i_BFCHG:
1982: case i_BFEXTS:
1983: case i_BFCLR:
1984: case i_BFFFO:
1985: case i_BFSET:
1986: case i_BFINS:
1.1.1.7 root 1987: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1988: genamode (curi->dmode, "dstreg", sz_long, "dst", 2, 0);
1.1.1.5 root 1989: start_brace ();
1.1.1.3 root 1990: printf ("\tuae_s32 offset = extra & 0x800 ? m68k_dreg(regs, (extra >> 6) & 7) : (extra >> 6) & 0x1f;\n");
1991: printf ("\tint width = (((extra & 0x20 ? m68k_dreg(regs, extra & 7) : extra) -1) & 0x1f) +1;\n");
1.1.1.7 root 1992: if (curi->dmode == Dreg) {
1.1.1.3 root 1993: printf ("\tuae_u32 tmp = m68k_dreg(regs, dstreg) << (offset & 0x1f);\n");
1994: } else {
1995: printf ("\tuae_u32 tmp,bf0,bf1;\n");
1996: printf ("\tdsta += (offset >> 3) | (offset & 0x80000000 ? ~0x1fffffff : 0);\n");
1997: printf ("\tbf0 = get_long(dsta);bf1 = get_byte(dsta+4) & 0xff;\n");
1998: printf ("\ttmp = (bf0 << (offset & 7)) | (bf1 >> (8 - (offset & 7)));\n");
1999: }
2000: printf ("\ttmp >>= (32 - width);\n");
1.1.1.7 root 2001: printf ("\tSET_NFLG (tmp & (1 << (width-1)) ? 1 : 0);\n");
2002: printf ("\tSET_ZFLG (tmp == 0); SET_VFLG (0); SET_CFLG (0);\n");
2003: switch (curi->mnemo) {
1.1.1.11 root 2004: case i_BFTST:
1.1.1.3 root 2005: break;
1.1.1.11 root 2006: case i_BFEXTU:
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_BFCHG:
1.1.1.3 root 2010: printf ("\ttmp = ~tmp;\n");
2011: break;
1.1.1.11 root 2012: case i_BFEXTS:
1.1.1.7 root 2013: printf ("\tif (GET_NFLG) tmp |= width == 32 ? 0 : (-1 << width);\n");
1.1.1.3 root 2014: printf ("\tm68k_dreg(regs, (extra >> 12) & 7) = tmp;\n");
2015: break;
1.1.1.11 root 2016: case i_BFCLR:
1.1.1.3 root 2017: printf ("\ttmp = 0;\n");
2018: break;
1.1.1.11 root 2019: case i_BFFFO:
1.1.1.3 root 2020: printf ("\t{ uae_u32 mask = 1 << (width-1);\n");
2021: printf ("\twhile (mask) { if (tmp & mask) break; mask >>= 1; offset++; }}\n");
2022: printf ("\tm68k_dreg(regs, (extra >> 12) & 7) = offset;\n");
2023: break;
1.1.1.11 root 2024: case i_BFSET:
1.1.1.3 root 2025: printf ("\ttmp = 0xffffffff;\n");
2026: break;
1.1.1.11 root 2027: case i_BFINS:
1.1.1.3 root 2028: printf ("\ttmp = m68k_dreg(regs, (extra >> 12) & 7);\n");
2029: break;
1.1.1.11 root 2030: default:
1.1.1.3 root 2031: break;
1.1 root 2032: }
1.1.1.7 root 2033: if (curi->mnemo == i_BFCHG
2034: || curi->mnemo == i_BFCLR
2035: || curi->mnemo == i_BFSET
2036: || curi->mnemo == i_BFINS)
1.1.1.11 root 2037: {
2038: printf ("\ttmp <<= (32 - width);\n");
2039: if (curi->dmode == Dreg) {
2040: printf ("\tm68k_dreg(regs, dstreg) = (m68k_dreg(regs, dstreg) & ((offset & 0x1f) == 0 ? 0 :\n");
2041: printf ("\t\t(0xffffffff << (32 - (offset & 0x1f))))) |\n");
2042: printf ("\t\t(tmp >> (offset & 0x1f)) |\n");
2043: printf ("\t\t(((offset & 0x1f) + width) >= 32 ? 0 :\n");
2044: printf (" (m68k_dreg(regs, dstreg) & ((uae_u32)0xffffffff >> ((offset & 0x1f) + width))));\n");
2045: } else {
2046: printf ("\tbf0 = (bf0 & (0xff000000 << (8 - (offset & 7)))) |\n");
2047: printf ("\t\t(tmp >> (offset & 7)) |\n");
2048: printf ("\t\t(((offset & 7) + width) >= 32 ? 0 :\n");
2049: printf ("\t\t (bf0 & ((uae_u32)0xffffffff >> ((offset & 7) + width))));\n");
2050: printf ("\tput_long(dsta,bf0 );\n");
2051: printf ("\tif (((offset & 7) + width) > 32) {\n");
2052: printf ("\t\tbf1 = (bf1 & (0xff >> (width - 32 + (offset & 7)))) |\n");
2053: printf ("\t\t\t(tmp << (8 - (offset & 7)));\n");
2054: printf ("\t\tput_byte(dsta+4,bf1);\n");
2055: printf ("\t}\n");
2056: }
1.1.1.5 root 2057: }
1.1 root 2058: break;
1.1.1.11 root 2059: case i_PACK:
1.1.1.7 root 2060: if (curi->smode == Dreg) {
1.1.1.5 root 2061: printf ("\tuae_u16 val = m68k_dreg(regs, srcreg) + %s;\n", gen_nextiword ());
1.1.1.3 root 2062: printf ("\tm68k_dreg(regs, dstreg) = (m68k_dreg(regs, dstreg) & 0xffffff00) | ((val >> 4) & 0xf0) | (val & 0xf);\n");
2063: } else {
2064: printf ("\tuae_u16 val;\n");
2065: printf ("\tm68k_areg(regs, srcreg) -= areg_byteinc[srcreg];\n");
2066: printf ("\tval = (uae_u16)get_byte(m68k_areg(regs, srcreg));\n");
2067: printf ("\tm68k_areg(regs, srcreg) -= areg_byteinc[srcreg];\n");
1.1.1.5 root 2068: printf ("\tval = (val | ((uae_u16)get_byte(m68k_areg(regs, srcreg)) << 8)) + %s;\n", gen_nextiword ());
1.1.1.3 root 2069: printf ("\tm68k_areg(regs, dstreg) -= areg_byteinc[dstreg];\n");
2070: printf ("\tput_byte(m68k_areg(regs, dstreg),((val >> 4) & 0xf0) | (val & 0xf));\n");
1.1 root 2071: }
2072: break;
1.1.1.11 root 2073: case i_UNPK:
1.1.1.7 root 2074: if (curi->smode == Dreg) {
1.1.1.3 root 2075: printf ("\tuae_u16 val = m68k_dreg(regs, srcreg);\n");
1.1.1.5 root 2076: printf ("\tval = (((val << 4) & 0xf00) | (val & 0xf)) + %s;\n", gen_nextiword ());
1.1.1.3 root 2077: printf ("\tm68k_dreg(regs, dstreg) = (m68k_dreg(regs, dstreg) & 0xffff0000) | (val & 0xffff);\n");
2078: } else {
2079: printf ("\tuae_u16 val;\n");
2080: printf ("\tm68k_areg(regs, srcreg) -= areg_byteinc[srcreg];\n");
2081: printf ("\tval = (uae_u16)get_byte(m68k_areg(regs, srcreg));\n");
1.1.1.5 root 2082: printf ("\tval = (((val << 4) & 0xf00) | (val & 0xf)) + %s;\n", gen_nextiword ());
1.1.1.3 root 2083: printf ("\tm68k_areg(regs, dstreg) -= areg_byteinc[dstreg];\n");
2084: printf ("\tput_byte(m68k_areg(regs, dstreg),val);\n");
2085: printf ("\tm68k_areg(regs, dstreg) -= areg_byteinc[dstreg];\n");
2086: printf ("\tput_byte(m68k_areg(regs, dstreg),val >> 8);\n");
1.1 root 2087: }
2088: break;
1.1.1.11 root 2089: case i_TAS:
1.1.1.7 root 2090: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
2091: genflags (flag_logical, curi->size, "src", "", "");
1.1.1.3 root 2092: printf ("\tsrc |= 0x80;\n");
1.1.1.7 root 2093: genastore ("src", curi->smode, "srcreg", curi->size, "src");
1.1 root 2094: break;
1.1.1.11 root 2095: case i_FPP:
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 ("\tfpp_opp(opcode,extra);\n");
1.1 root 2099: break;
1.1.1.11 root 2100: case i_FDBcc:
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 ("\tfdbcc_opp(opcode,extra);\n");
1.1 root 2104: break;
1.1.1.11 root 2105: case i_FScc:
1.1.1.7 root 2106: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.5 root 2107: sync_m68k_pc ();
1.1.1.3 root 2108: printf ("\tfscc_opp(opcode,extra);\n");
1.1 root 2109: break;
1.1.1.11 root 2110: case i_FTRAPcc:
1.1.1.5 root 2111: sync_m68k_pc ();
2112: start_brace ();
1.1.1.3 root 2113: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 2114: if (curi->smode != am_unknown && curi->smode != am_illg)
2115: genamode (curi->smode, "srcreg", curi->size, "dummy", 1, 0);
1.1.1.5 root 2116: sync_m68k_pc ();
1.1.1.3 root 2117: printf ("\tftrapcc_opp(opcode,oldpc);\n");
1.1 root 2118: break;
1.1.1.11 root 2119: case i_FBcc:
1.1.1.5 root 2120: sync_m68k_pc ();
2121: start_brace ();
1.1.1.3 root 2122: printf ("\tuaecptr pc = m68k_getpc();\n");
1.1.1.7 root 2123: genamode (curi->dmode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.5 root 2124: sync_m68k_pc ();
1.1.1.3 root 2125: printf ("\tfbcc_opp(opcode,pc,extra);\n");
1.1 root 2126: break;
1.1.1.11 root 2127: case i_FSAVE:
1.1.1.5 root 2128: sync_m68k_pc ();
1.1.1.3 root 2129: printf ("\tfsave_opp(opcode);\n");
1.1 root 2130: break;
1.1.1.11 root 2131: case i_FRESTORE:
1.1.1.5 root 2132: sync_m68k_pc ();
1.1.1.3 root 2133: printf ("\tfrestore_opp(opcode);\n");
1.1 root 2134: break;
1.1.1.12 root 2135:
2136: case i_CINVL:
2137: case i_CINVP:
2138: case i_CINVA:
2139: case i_CPUSHL:
2140: case i_CPUSHP:
2141: case i_CPUSHA:
2142: break;
2143: case i_MOVE16:
1.1.1.14! root 2144: if ((opcode & 0xfff8) == 0xf620) {
! 2145: /* MOVE16 (Ax)+,(Ay)+ */
! 2146: printf ("\tuaecptr mems = m68k_areg(regs, srcreg) & ~15, memd;\n");
! 2147: printf ("\tdstreg = (%s >> 12) & 7;\n", gen_nextiword());
! 2148: printf ("\tmemd = m68k_areg(regs, dstreg) & ~15;\n");
! 2149: printf ("\tput_long(memd, get_long(mems));\n");
! 2150: printf ("\tput_long(memd+4, get_long(mems+4));\n");
! 2151: printf ("\tput_long(memd+8, get_long(mems+8));\n");
! 2152: printf ("\tput_long(memd+12, get_long(mems+12));\n");
! 2153: printf ("\tif (srcreg != dstreg)\n");
! 2154: printf ("\tm68k_areg(regs, srcreg) += 16;\n");
! 2155: printf ("\tm68k_areg(regs, dstreg) += 16;\n");
! 2156: } else {
! 2157: /* Other variants */
! 2158: genamode (curi->smode, "srcreg", curi->size, "mems", 0, 2);
! 2159: genamode (curi->dmode, "dstreg", curi->size, "memd", 0, 2);
! 2160: printf ("\tmemsa &= ~15;\n");
! 2161: printf ("\tmemda &= ~15;\n");
! 2162: printf ("\tput_long(memda, get_long(memsa));\n");
! 2163: printf ("\tput_long(memda+4, get_long(memsa+4));\n");
! 2164: printf ("\tput_long(memda+8, get_long(memsa+8));\n");
! 2165: printf ("\tput_long(memda+12, get_long(memsa+12));\n");
! 2166: if ((opcode & 0xfff8) == 0xf600)
! 2167: printf ("\tm68k_areg(regs, srcreg) += 16;\n");
! 2168: else if ((opcode & 0xfff8) == 0xf608)
! 2169: printf ("\tm68k_areg(regs, dstreg) += 16;\n");
! 2170: }
! 2171: break;
1.1.1.12 root 2172:
1.1.1.11 root 2173: case i_MMUOP:
1.1.1.7 root 2174: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.5 root 2175: sync_m68k_pc ();
1.1.1.3 root 2176: printf ("\tmmu_op(opcode,extra);\n");
1.1 root 2177: break;
1.1.1.11 root 2178: default:
1.1.1.5 root 2179: abort ();
1.1 root 2180: break;
1.1.1.5 root 2181: }
1.1 root 2182: finish_braces ();
1.1.1.3 root 2183: sync_m68k_pc ();
1.1 root 2184: }
2185:
1.1.1.5 root 2186: static void generate_includes (FILE * f)
1.1.1.3 root 2187: {
2188: fprintf (f, "#include \"sysconfig.h\"\n");
2189: fprintf (f, "#include \"sysdeps.h\"\n");
2190: fprintf (f, "#include \"config.h\"\n");
2191: fprintf (f, "#include \"options.h\"\n");
2192: fprintf (f, "#include \"memory.h\"\n");
2193: fprintf (f, "#include \"custom.h\"\n");
2194: fprintf (f, "#include \"newcpu.h\"\n");
2195: fprintf (f, "#include \"compiler.h\"\n");
2196: fprintf (f, "#include \"cputbl.h\"\n");
1.1.1.12 root 2197:
2198: fprintf (f, "#define CPUFUNC(x) x##_ff\n"
2199: "#ifdef NOFLAGS\n"
2200: "#include \"noflags.h\"\n"
2201: "#endif\n");
1.1.1.3 root 2202: }
2203:
2204: static int postfix;
2205:
2206: static void generate_one_opcode (int rp)
1.1 root 2207: {
2208: int i;
1.1.1.3 root 2209: uae_u16 smsk, dmsk;
2210: long int opcode = opcode_map[rp];
1.1 root 2211:
1.1.1.3 root 2212: if (table68k[opcode].mnemo == i_ILLG
2213: || table68k[opcode].clev > cpu_level)
2214: return;
1.1 root 2215:
1.1.1.5 root 2216: for (i = 0; lookuptab[i].name[0]; i++) {
1.1.1.3 root 2217: if (table68k[opcode].mnemo == lookuptab[i].mnemo)
2218: break;
2219: }
1.1 root 2220:
1.1.1.3 root 2221: if (table68k[opcode].handler != -1)
2222: return;
1.1 root 2223:
1.1.1.3 root 2224: if (opcode_next_clev[rp] != cpu_level) {
1.1.1.12 root 2225: fprintf (stblfile, "{ CPUFUNC(op_%lx_%d), 0, %ld }, /* %s */\n", opcode, opcode_last_postfix[rp],
1.1.1.3 root 2226: opcode, lookuptab[i].name);
2227: return;
2228: }
1.1.1.12 root 2229: fprintf (stblfile, "{ CPUFUNC(op_%lx_%d), 0, %ld }, /* %s */\n", opcode, postfix, opcode, lookuptab[i].name);
2230: fprintf (headerfile, "extern cpuop_func op_%lx_%d_nf;\n", opcode, postfix);
2231: fprintf (headerfile, "extern cpuop_func op_%lx_%d_ff;\n", opcode, postfix);
2232: printf ("unsigned long REGPARAM2 CPUFUNC(op_%lx_%d)(uae_u32 opcode) /* %s */\n{\n", opcode, postfix, lookuptab[i].name);
1.1.1.3 root 2233:
2234: switch (table68k[opcode].stype) {
1.1.1.14! root 2235: case 0: smsk = 7; break;
! 2236: case 1: smsk = 255; break;
! 2237: case 2: smsk = 15; break;
! 2238: case 3: smsk = 7; break;
! 2239: case 4: smsk = 7; break;
! 2240: case 5: smsk = 63; break;
! 2241: case 7: smsk = 3; break;
! 2242: default: abort ();
1.1.1.3 root 2243: }
2244: dmsk = 7;
2245:
2246: next_cpu_level = -1;
2247: if (table68k[opcode].suse
1.1.1.5 root 2248: && table68k[opcode].smode != imm && table68k[opcode].smode != imm0
1.1.1.3 root 2249: && table68k[opcode].smode != imm1 && table68k[opcode].smode != imm2
2250: && table68k[opcode].smode != absw && table68k[opcode].smode != absl
2251: && table68k[opcode].smode != PC8r && table68k[opcode].smode != PC16)
2252: {
2253: if (table68k[opcode].spos == -1) {
1.1.1.5 root 2254: if (((int) table68k[opcode].sreg) >= 128)
2255: printf ("\tuae_u32 srcreg = (uae_s32)(uae_s8)%d;\n", (int) table68k[opcode].sreg);
1.1.1.3 root 2256: else
1.1.1.5 root 2257: printf ("\tuae_u32 srcreg = %d;\n", (int) table68k[opcode].sreg);
1.1.1.3 root 2258: } else {
2259: char source[100];
1.1.1.6 root 2260: int pos = table68k[opcode].spos;
1.1.1.5 root 2261:
1.1.1.6 root 2262: if (pos)
2263: sprintf (source, "((opcode >> %d) & %d)", pos, smsk);
1.1.1.3 root 2264: else
1.1.1.5 root 2265: sprintf (source, "(opcode & %d)", smsk);
2266:
1.1.1.3 root 2267: if (table68k[opcode].stype == 3)
2268: printf ("\tuae_u32 srcreg = imm8_table[%s];\n", source);
2269: else if (table68k[opcode].stype == 1)
2270: printf ("\tuae_u32 srcreg = (uae_s32)(uae_s8)%s;\n", source);
2271: else
2272: printf ("\tuae_u32 srcreg = %s;\n", source);
1.1 root 2273: }
1.1.1.3 root 2274: }
2275: if (table68k[opcode].duse
2276: /* Yes, the dmode can be imm, in case of LINK or DBcc */
1.1.1.5 root 2277: && table68k[opcode].dmode != imm && table68k[opcode].dmode != imm0
1.1.1.3 root 2278: && table68k[opcode].dmode != imm1 && table68k[opcode].dmode != imm2
1.1.1.5 root 2279: && table68k[opcode].dmode != absw && table68k[opcode].dmode != absl)
2280: {
1.1.1.3 root 2281: if (table68k[opcode].dpos == -1) {
1.1.1.5 root 2282: if (((int) table68k[opcode].dreg) >= 128)
2283: printf ("\tuae_u32 dstreg = (uae_s32)(uae_s8)%d;\n", (int) table68k[opcode].dreg);
1.1.1.3 root 2284: else
1.1.1.5 root 2285: printf ("\tuae_u32 dstreg = %d;\n", (int) table68k[opcode].dreg);
1.1.1.3 root 2286: } else {
1.1.1.5 root 2287: int pos = table68k[opcode].dpos;
1.1.1.6 root 2288: #if 0
1.1.1.5 root 2289: /* Check that we can do the little endian optimization safely. */
1.1.1.6 root 2290: if (pos < 8 && (dmsk >> (8 - pos)) != 0)
1.1.1.5 root 2291: abort ();
1.1.1.6 root 2292: #endif
1.1.1.5 root 2293: if (pos)
1.1.1.3 root 2294: printf ("\tuae_u32 dstreg = (opcode >> %d) & %d;\n",
1.1.1.5 root 2295: pos, dmsk);
1.1.1.3 root 2296: else
2297: printf ("\tuae_u32 dstreg = opcode & %d;\n", dmsk);
1.1 root 2298: }
2299: }
1.1.1.5 root 2300: need_endlabel = 0;
1.1.1.3 root 2301: endlabelno++;
2302: sprintf (endlabelstr, "endlabel%d", endlabelno);
2303: gen_opcode (opcode);
1.1.1.5 root 2304: if (need_endlabel)
1.1.1.6 root 2305: printf ("%s: ;\n", endlabelstr);
1.1.1.13 root 2306: printf ("return %d;\n", insn_n_cycles * CYCLE_UNIT / 2);
1.1.1.3 root 2307: printf ("}\n");
2308: opcode_next_clev[rp] = next_cpu_level;
2309: opcode_last_postfix[rp] = postfix;
1.1 root 2310: }
2311:
1.1.1.3 root 2312: static void generate_func (void)
1.1 root 2313: {
1.1.1.5 root 2314: int i, j, rp;
1.1 root 2315:
1.1.1.3 root 2316: using_prefetch = 0;
2317: using_exception_3 = 0;
1.1.1.12 root 2318: for (i = 0; i < 6; i++) {
2319: cpu_level = 4 - i;
2320: if (i == 5) {
1.1.1.3 root 2321: cpu_level = 0;
2322: using_prefetch = 1;
2323: using_exception_3 = 1;
2324: for (rp = 0; rp < nr_cpuop_funcs; rp++)
2325: opcode_next_clev[rp] = 0;
2326: }
1.1.1.12 root 2327:
1.1.1.3 root 2328: postfix = i;
1.1.1.12 root 2329: fprintf (stblfile, "struct cputbl CPUFUNC(op_smalltbl_%d)[] = {\n", postfix);
1.1.1.3 root 2330:
1.1.1.5 root 2331: /* sam: this is for people with low memory (eg. me :)) */
2332: printf ("\n"
2333: "#if !defined(PART_1) && !defined(PART_2) && "
2334: "!defined(PART_3) && !defined(PART_4) && "
2335: "!defined(PART_5) && !defined(PART_6) && "
2336: "!defined(PART_7) && !defined(PART_8)"
2337: "\n"
2338: "#define PART_1 1\n"
2339: "#define PART_2 1\n"
2340: "#define PART_3 1\n"
2341: "#define PART_4 1\n"
2342: "#define PART_5 1\n"
2343: "#define PART_6 1\n"
2344: "#define PART_7 1\n"
2345: "#define PART_8 1\n"
2346: "#endif\n\n");
2347:
2348: rp = 0;
2349: for(j=1;j<=8;++j) {
2350: int k = (j*nr_cpuop_funcs)/8;
2351: printf ("#ifdef PART_%d\n",j);
2352: for (; rp < k; rp++)
2353: generate_one_opcode (rp);
2354: printf ("#endif\n\n");
2355: }
2356:
1.1.1.3 root 2357: fprintf (stblfile, "{ 0, 0, 0 }};\n");
1.1 root 2358: }
2359:
2360: }
2361:
1.1.1.3 root 2362: int main (int argc, char **argv)
1.1.1.5 root 2363: {
1.1 root 2364: read_table68k ();
2365: do_merges ();
1.1.1.3 root 2366:
1.1.1.5 root 2367: opcode_map = (int *) xmalloc (sizeof (int) * nr_cpuop_funcs);
2368: opcode_last_postfix = (int *) xmalloc (sizeof (int) * nr_cpuop_funcs);
2369: opcode_next_clev = (int *) xmalloc (sizeof (int) * nr_cpuop_funcs);
2370: counts = (unsigned long *) xmalloc (65536 * sizeof (unsigned long));
2371: read_counts ();
1.1.1.3 root 2372:
2373: /* It would be a lot nicer to put all in one file (we'd also get rid of
2374: * cputbl.h that way), but cpuopti can't cope. That could be fixed, but
2375: * I don't dare to touch the 68k version. */
1.1.1.5 root 2376:
1.1.1.3 root 2377: headerfile = fopen ("cputbl.h", "wb");
2378: stblfile = fopen ("cpustbl.c", "wb");
2379: freopen ("cpuemu.c", "wb", stdout);
2380:
2381: generate_includes (stdout);
2382: generate_includes (stblfile);
2383:
2384: generate_func ();
2385:
2386: free (table68k);
1.1 root 2387: return 0;
2388: }
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