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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,
1.1.1.5 root 220: * the calling routine handles Apdi and Aipi modes. */
1.1.1.3 root 221: static void genamode (amodes mode, char *reg, wordsizes size, char *name, int getv, int movem)
1.1 root 222: {
1.1.1.6 root 223: start_brace ();
1.1.1.5 root 224: switch (mode) {
1.1.1.11 root 225: case Dreg:
1.1 root 226: if (movem)
1.1.1.5 root 227: abort ();
1.1.1.3 root 228: if (getv == 1)
1.1.1.5 root 229: switch (size) {
1.1.1.11 root 230: case sz_byte:
1.1.1.8 root 231: #if defined(AMIGA) && !defined(WARPUP)
1.1.1.2 root 232: /* sam: I don't know why gcc.2.7.2.1 produces a code worse */
233: /* if it is not done like that: */
1.1.1.3 root 234: printf ("\tuae_s8 %s = ((uae_u8*)&m68k_dreg(regs, %s))[3];\n", name, reg);
1.1.1.2 root 235: #else
1.1.1.3 root 236: printf ("\tuae_s8 %s = m68k_dreg(regs, %s);\n", name, reg);
1.1.1.2 root 237: #endif
1.1 root 238: break;
1.1.1.11 root 239: case sz_word:
1.1.1.8 root 240: #if defined(AMIGA) && !defined(WARPUP)
1.1.1.3 root 241: printf ("\tuae_s16 %s = ((uae_s16*)&m68k_dreg(regs, %s))[1];\n", name, reg);
1.1.1.2 root 242: #else
1.1.1.3 root 243: printf ("\tuae_s16 %s = m68k_dreg(regs, %s);\n", name, reg);
1.1.1.2 root 244: #endif
1.1 root 245: break;
1.1.1.11 root 246: case sz_long:
1.1.1.3 root 247: printf ("\tuae_s32 %s = m68k_dreg(regs, %s);\n", name, reg);
1.1 root 248: break;
1.1.1.11 root 249: default:
1.1.1.5 root 250: abort ();
1.1 root 251: }
1.1.1.3 root 252: return;
1.1.1.11 root 253: case Areg:
1.1 root 254: if (movem)
1.1.1.5 root 255: abort ();
1.1.1.3 root 256: if (getv == 1)
1.1.1.5 root 257: switch (size) {
1.1.1.11 root 258: case sz_word:
1.1.1.3 root 259: printf ("\tuae_s16 %s = m68k_areg(regs, %s);\n", name, reg);
1.1 root 260: break;
1.1.1.11 root 261: case sz_long:
1.1.1.3 root 262: printf ("\tuae_s32 %s = m68k_areg(regs, %s);\n", name, reg);
1.1 root 263: break;
1.1.1.11 root 264: default:
1.1.1.5 root 265: abort ();
1.1 root 266: }
1.1.1.3 root 267: return;
1.1.1.11 root 268: case Aind:
1.1.1.3 root 269: printf ("\tuaecptr %sa = m68k_areg(regs, %s);\n", name, reg);
1.1 root 270: break;
1.1.1.11 root 271: case Aipi:
1.1.1.3 root 272: printf ("\tuaecptr %sa = m68k_areg(regs, %s);\n", name, reg);
1.1 root 273: break;
1.1.1.11 root 274: case Apdi:
275: insn_n_cycles += 2;
1.1.1.5 root 276: switch (size) {
1.1.1.11 root 277: case sz_byte:
1.1.1.3 root 278: if (movem)
279: printf ("\tuaecptr %sa = m68k_areg(regs, %s);\n", name, reg);
280: else
281: printf ("\tuaecptr %sa = m68k_areg(regs, %s) - areg_byteinc[%s];\n", name, reg, reg);
1.1 root 282: break;
1.1.1.11 root 283: case sz_word:
1.1.1.3 root 284: printf ("\tuaecptr %sa = m68k_areg(regs, %s) - %d;\n", name, reg, movem ? 0 : 2);
1.1 root 285: break;
1.1.1.11 root 286: case sz_long:
1.1.1.3 root 287: printf ("\tuaecptr %sa = m68k_areg(regs, %s) - %d;\n", name, reg, movem ? 0 : 4);
1.1 root 288: break;
1.1.1.11 root 289: default:
1.1.1.5 root 290: abort ();
1.1 root 291: }
292: break;
1.1.1.11 root 293: case Ad16:
1.1.1.5 root 294: printf ("\tuaecptr %sa = m68k_areg(regs, %s) + (uae_s32)(uae_s16)%s;\n", name, reg, gen_nextiword ());
1.1 root 295: break;
1.1.1.11 root 296: case Ad8r:
297: insn_n_cycles += 2;
1.1.1.3 root 298: if (cpu_level > 1) {
299: if (next_cpu_level < 1)
300: next_cpu_level = 1;
1.1.1.5 root 301: sync_m68k_pc ();
302: start_brace ();
1.1.1.11 root 303: /* This would ordinarily be done in gen_nextiword, which we bypass. */
304: insn_n_cycles += 4;
1.1.1.3 root 305: printf ("\tuaecptr %sa = get_disp_ea_020(m68k_areg(regs, %s), next_iword());\n", name, reg);
1.1.1.6 root 306: } else
1.1.1.5 root 307: printf ("\tuaecptr %sa = get_disp_ea_000(m68k_areg(regs, %s), %s);\n", name, reg, gen_nextiword ());
1.1.1.6 root 308:
1.1 root 309: break;
1.1.1.11 root 310: case PC16:
1.1.1.6 root 311: printf ("\tuaecptr %sa = m68k_getpc () + %d;\n", name, m68k_pc_offset);
312: printf ("\t%sa += (uae_s32)(uae_s16)%s;\n", name, gen_nextiword ());
1.1 root 313: break;
1.1.1.11 root 314: case PC8r:
315: insn_n_cycles += 2;
1.1.1.3 root 316: if (cpu_level > 1) {
317: if (next_cpu_level < 1)
318: next_cpu_level = 1;
1.1.1.5 root 319: sync_m68k_pc ();
320: start_brace ();
1.1.1.11 root 321: /* This would ordinarily be done in gen_nextiword, which we bypass. */
322: insn_n_cycles += 4;
1.1.1.3 root 323: printf ("\tuaecptr tmppc = m68k_getpc();\n");
324: printf ("\tuaecptr %sa = get_disp_ea_020(tmppc, next_iword());\n", name);
325: } else {
1.1.1.6 root 326: printf ("\tuaecptr tmppc = m68k_getpc() + %d;\n", m68k_pc_offset);
327: printf ("\tuaecptr %sa = get_disp_ea_000(tmppc, %s);\n", name, gen_nextiword ());
1.1 root 328: }
1.1.1.3 root 329:
1.1 root 330: break;
1.1.1.11 root 331: case absw:
1.1.1.6 root 332: printf ("\tuaecptr %sa = (uae_s32)(uae_s16)%s;\n", name, gen_nextiword ());
1.1 root 333: break;
1.1.1.11 root 334: case absl:
1.1.1.6 root 335: printf ("\tuaecptr %sa = %s;\n", name, gen_nextilong ());
1.1 root 336: break;
1.1.1.11 root 337: case imm:
1.1.1.3 root 338: if (getv != 1)
339: abort ();
1.1.1.5 root 340: switch (size) {
1.1.1.11 root 341: case sz_byte:
1.1.1.6 root 342: printf ("\tuae_s8 %s = %s;\n", name, gen_nextibyte ());
1.1.1.3 root 343: break;
1.1.1.11 root 344: case sz_word:
1.1.1.6 root 345: printf ("\tuae_s16 %s = %s;\n", name, gen_nextiword ());
1.1.1.3 root 346: break;
1.1.1.11 root 347: case sz_long:
1.1.1.6 root 348: printf ("\tuae_s32 %s = %s;\n", name, gen_nextilong ());
1.1.1.3 root 349: break;
1.1.1.11 root 350: default:
1.1.1.5 root 351: abort ();
1.1.1.3 root 352: }
353: return;
1.1.1.11 root 354: case imm0:
1.1.1.5 root 355: if (getv != 1)
356: abort ();
1.1.1.6 root 357: printf ("\tuae_s8 %s = %s;\n", name, gen_nextibyte ());
1.1.1.3 root 358: return;
1.1.1.11 root 359: case imm1:
1.1.1.5 root 360: if (getv != 1)
361: abort ();
1.1.1.6 root 362: printf ("\tuae_s16 %s = %s;\n", name, gen_nextiword ());
1.1.1.3 root 363: return;
1.1.1.11 root 364: case imm2:
1.1.1.5 root 365: if (getv != 1)
366: abort ();
1.1.1.6 root 367: printf ("\tuae_s32 %s = %s;\n", name, gen_nextilong ());
1.1.1.3 root 368: return;
1.1.1.11 root 369: case immi:
1.1.1.5 root 370: if (getv != 1)
371: abort ();
1.1.1.3 root 372: printf ("\tuae_u32 %s = %s;\n", name, reg);
373: return;
1.1.1.11 root 374: default:
1.1.1.5 root 375: abort ();
1.1.1.3 root 376: }
377:
378: /* We get here for all non-reg non-immediate addressing modes to
379: * actually fetch the value. */
380:
1.1.1.6 root 381: if (using_exception_3 && getv != 0 && size != sz_byte) {
1.1.1.3 root 382: printf ("\tif ((%sa & 1) != 0) {\n", name);
383: printf ("\t\tlast_fault_for_exception_3 = %sa;\n", name);
1.1.1.5 root 384: printf ("\t\tlast_op_for_exception_3 = opcode;\n");
1.1.1.3 root 385: printf ("\t\tlast_addr_for_exception_3 = m68k_getpc() + %d;\n", m68k_pc_offset);
386: printf ("\t\tException(3, 0);\n");
387: printf ("\t\tgoto %s;\n", endlabelstr);
388: printf ("\t}\n");
1.1.1.5 root 389: need_endlabel = 1;
1.1.1.3 root 390: start_brace ();
391: }
1.1.1.6 root 392:
393: if (getv == 1) {
394: switch (size) {
1.1.1.11 root 395: case sz_byte: insn_n_cycles += 4; break;
396: case sz_word: insn_n_cycles += 4; break;
397: case sz_long: insn_n_cycles += 8; break;
398: default: abort ();
1.1.1.6 root 399: }
400: start_brace ();
401: switch (size) {
1.1.1.11 root 402: case sz_byte: printf ("\tuae_s8 %s = get_byte(%sa);\n", name, name); break;
403: case sz_word: printf ("\tuae_s16 %s = get_word(%sa);\n", name, name); break;
404: case sz_long: printf ("\tuae_s32 %s = get_long(%sa);\n", name, name); break;
405: default: abort ();
1.1.1.6 root 406: }
407: }
408:
1.1.1.3 root 409: /* We now might have to fix up the register for pre-dec or post-inc
410: * addressing modes. */
411: if (!movem)
412: switch (mode) {
1.1.1.11 root 413: case Aipi:
1.1.1.5 root 414: switch (size) {
1.1.1.11 root 415: case sz_byte:
1.1.1.3 root 416: printf ("\tm68k_areg(regs, %s) += areg_byteinc[%s];\n", reg, reg);
1.1 root 417: break;
1.1.1.11 root 418: case sz_word:
1.1.1.3 root 419: printf ("\tm68k_areg(regs, %s) += 2;\n", reg);
1.1 root 420: break;
1.1.1.11 root 421: case sz_long:
1.1.1.3 root 422: printf ("\tm68k_areg(regs, %s) += 4;\n", reg);
1.1 root 423: break;
1.1.1.11 root 424: default:
1.1.1.5 root 425: abort ();
1.1 root 426: }
1.1.1.3 root 427: break;
1.1.1.11 root 428: case Apdi:
1.1.1.3 root 429: printf ("\tm68k_areg (regs, %s) = %sa;\n", reg, name);
430: break;
1.1.1.11 root 431: default:
1.1.1.3 root 432: break;
433: }
1.1 root 434: }
435:
1.1.1.3 root 436: static void genastore (char *from, amodes mode, char *reg, wordsizes size, char *to)
1.1 root 437: {
1.1.1.5 root 438: switch (mode) {
1.1 root 439: case Dreg:
1.1.1.5 root 440: switch (size) {
1.1 root 441: case sz_byte:
1.1.1.3 root 442: printf ("\tm68k_dreg(regs, %s) = (m68k_dreg(regs, %s) & ~0xff) | ((%s) & 0xff);\n", reg, reg, from);
1.1 root 443: break;
444: case sz_word:
1.1.1.3 root 445: printf ("\tm68k_dreg(regs, %s) = (m68k_dreg(regs, %s) & ~0xffff) | ((%s) & 0xffff);\n", reg, reg, from);
1.1 root 446: break;
447: case sz_long:
1.1.1.3 root 448: printf ("\tm68k_dreg(regs, %s) = (%s);\n", reg, from);
1.1 root 449: break;
1.1.1.5 root 450: default:
451: abort ();
1.1 root 452: }
453: break;
454: case Areg:
1.1.1.5 root 455: switch (size) {
1.1 root 456: case sz_word:
1.1.1.3 root 457: fprintf (stderr, "Foo\n");
458: printf ("\tm68k_areg(regs, %s) = (uae_s32)(uae_s16)(%s);\n", reg, from);
1.1 root 459: break;
460: case sz_long:
1.1.1.3 root 461: printf ("\tm68k_areg(regs, %s) = (%s);\n", reg, from);
1.1 root 462: break;
1.1.1.5 root 463: default:
464: abort ();
1.1 root 465: }
466: break;
467: case Aind:
468: case Aipi:
469: case Apdi:
470: case Ad16:
471: case Ad8r:
472: case absw:
473: case absl:
474: case PC16:
475: case PC8r:
1.1.1.3 root 476: if (using_prefetch)
1.1.1.5 root 477: sync_m68k_pc ();
478: switch (size) {
1.1 root 479: case sz_byte:
1.1.1.11 root 480: insn_n_cycles += 4;
1.1.1.3 root 481: printf ("\tput_byte(%sa,%s);\n", to, from);
1.1 root 482: break;
483: case sz_word:
1.1.1.11 root 484: insn_n_cycles += 4;
1.1.1.5 root 485: if (cpu_level < 2 && (mode == PC16 || mode == PC8r))
486: abort ();
1.1.1.3 root 487: printf ("\tput_word(%sa,%s);\n", to, from);
1.1 root 488: break;
489: case sz_long:
1.1.1.11 root 490: insn_n_cycles += 8;
1.1.1.5 root 491: if (cpu_level < 2 && (mode == PC16 || mode == PC8r))
492: abort ();
1.1.1.3 root 493: printf ("\tput_long(%sa,%s);\n", to, from);
1.1 root 494: break;
1.1.1.5 root 495: default:
496: abort ();
1.1 root 497: }
498: break;
499: case imm:
500: case imm0:
501: case imm1:
502: case imm2:
503: case immi:
1.1.1.5 root 504: abort ();
1.1 root 505: break;
1.1.1.3 root 506: default:
1.1.1.5 root 507: abort ();
1.1 root 508: }
509: }
510:
1.1.1.5 root 511: static void genmovemel (uae_u16 opcode)
1.1 root 512: {
513: char getcode[100];
514: int size = table68k[opcode].size == sz_long ? 4 : 2;
1.1.1.3 root 515:
516: if (table68k[opcode].size == sz_long) {
1.1.1.5 root 517: strcpy (getcode, "get_long(srca)");
1.1.1.3 root 518: } else {
1.1.1.5 root 519: strcpy (getcode, "(uae_s32)(uae_s16)get_word(srca)");
1.1 root 520: }
1.1.1.3 root 521:
1.1.1.5 root 522: printf ("\tuae_u16 mask = %s;\n", gen_nextiword ());
1.1.1.3 root 523: printf ("\tunsigned int dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n");
524: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1);
1.1.1.5 root 525: start_brace ();
1.1.1.3 root 526: printf ("\twhile (dmask) { m68k_dreg(regs, movem_index1[dmask]) = %s; srca += %d; dmask = movem_next[dmask]; }\n",
1.1.1.5 root 527: getcode, size);
1.1.1.3 root 528: printf ("\twhile (amask) { m68k_areg(regs, movem_index1[amask]) = %s; srca += %d; amask = movem_next[amask]; }\n",
1.1.1.5 root 529: getcode, size);
1.1 root 530:
531: if (table68k[opcode].dmode == Aipi)
1.1.1.3 root 532: printf ("\tm68k_areg(regs, dstreg) = srca;\n");
1.1 root 533: }
534:
1.1.1.5 root 535: static void genmovemle (uae_u16 opcode)
1.1 root 536: {
537: char putcode[100];
538: int size = table68k[opcode].size == sz_long ? 4 : 2;
539: if (table68k[opcode].size == sz_long) {
1.1.1.5 root 540: strcpy (putcode, "put_long(srca,");
1.1.1.3 root 541: } else {
1.1.1.5 root 542: strcpy (putcode, "put_word(srca,");
1.1 root 543: }
1.1.1.3 root 544:
1.1.1.5 root 545: printf ("\tuae_u16 mask = %s;\n", gen_nextiword ());
1.1.1.3 root 546: genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1);
547: if (using_prefetch)
1.1.1.5 root 548: sync_m68k_pc ();
1.1.1.3 root 549:
1.1.1.5 root 550: start_brace ();
1.1 root 551: if (table68k[opcode].dmode == Apdi) {
1.1.1.3 root 552: printf ("\tuae_u16 amask = mask & 0xff, dmask = (mask >> 8) & 0xff;\n");
553: printf ("\twhile (amask) { srca -= %d; %s m68k_areg(regs, movem_index2[amask])); amask = movem_next[amask]; }\n",
1.1.1.5 root 554: size, putcode);
1.1.1.3 root 555: printf ("\twhile (dmask) { srca -= %d; %s m68k_dreg(regs, movem_index2[dmask])); dmask = movem_next[dmask]; }\n",
1.1.1.5 root 556: size, putcode);
1.1.1.3 root 557: printf ("\tm68k_areg(regs, dstreg) = srca;\n");
1.1.1.2 root 558: } else {
1.1.1.3 root 559: printf ("\tuae_u16 dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n");
560: printf ("\twhile (dmask) { %s m68k_dreg(regs, movem_index1[dmask])); srca += %d; dmask = movem_next[dmask]; }\n",
1.1.1.5 root 561: putcode, size);
1.1.1.3 root 562: printf ("\twhile (amask) { %s m68k_areg(regs, movem_index1[amask])); srca += %d; amask = movem_next[amask]; }\n",
1.1.1.5 root 563: putcode, size);
1.1 root 564: }
565: }
566:
1.1.1.7 root 567: static void duplicate_carry (void)
568: {
569: printf ("\tCOPY_CARRY;\n");
570: }
571:
1.1.1.12! root 572: typedef enum
! 573: {
! 574: flag_logical_noclobber, flag_logical, flag_add, flag_sub, flag_cmp, flag_addx, flag_subx, flag_zn,
! 575: flag_av, flag_sv
! 576: }
! 577: flagtypes;
1.1 root 578:
1.1.1.5 root 579: static void genflags_normal (flagtypes type, wordsizes size, char *value, char *src, char *dst)
1.1 root 580: {
1.1.1.5 root 581: char vstr[100], sstr[100], dstr[100];
582: char usstr[100], udstr[100];
583: char unsstr[100], undstr[100];
1.1 root 584:
1.1.1.5 root 585: switch (size) {
1.1 root 586: case sz_byte:
1.1.1.5 root 587: strcpy (vstr, "((uae_s8)(");
588: strcpy (usstr, "((uae_u8)(");
1.1 root 589: break;
590: case sz_word:
1.1.1.5 root 591: strcpy (vstr, "((uae_s16)(");
592: strcpy (usstr, "((uae_u16)(");
1.1 root 593: break;
594: case sz_long:
1.1.1.5 root 595: strcpy (vstr, "((uae_s32)(");
596: strcpy (usstr, "((uae_u32)(");
1.1 root 597: break;
598: default:
1.1.1.5 root 599: abort ();
1.1 root 600: }
1.1.1.5 root 601: strcpy (unsstr, usstr);
1.1 root 602:
1.1.1.5 root 603: strcpy (sstr, vstr);
604: strcpy (dstr, vstr);
605: strcat (vstr, value);
606: strcat (vstr, "))");
607: strcat (dstr, dst);
608: strcat (dstr, "))");
609: strcat (sstr, src);
610: strcat (sstr, "))");
611:
612: strcpy (udstr, usstr);
613: strcat (udstr, dst);
614: strcat (udstr, "))");
615: strcat (usstr, src);
616: strcat (usstr, "))");
617:
618: strcpy (undstr, unsstr);
619: strcat (unsstr, "-");
620: strcat (undstr, "~");
621: strcat (undstr, dst);
622: strcat (undstr, "))");
623: strcat (unsstr, src);
624: strcat (unsstr, "))");
1.1 root 625:
626: switch (type) {
1.1.1.7 root 627: case flag_logical_noclobber:
1.1 root 628: case flag_logical:
629: case flag_zn:
630: case flag_av:
631: case flag_sv:
632: case flag_addx:
633: case flag_subx:
634: break;
1.1.1.3 root 635:
1.1 root 636: case flag_add:
1.1.1.5 root 637: start_brace ();
1.1.1.3 root 638: printf ("uae_u32 %s = %s + %s;\n", value, dstr, sstr);
1.1 root 639: break;
640: case flag_sub:
641: case flag_cmp:
1.1.1.5 root 642: start_brace ();
1.1.1.3 root 643: printf ("uae_u32 %s = %s - %s;\n", value, dstr, sstr);
1.1 root 644: break;
645: }
646:
647: switch (type) {
1.1.1.7 root 648: case flag_logical_noclobber:
1.1 root 649: case flag_logical:
650: case flag_zn:
651: break;
1.1.1.3 root 652:
1.1 root 653: case flag_add:
654: case flag_sub:
655: case flag_addx:
656: case flag_subx:
657: case flag_cmp:
658: case flag_av:
659: case flag_sv:
1.1.1.5 root 660: start_brace ();
661: printf ("\t" BOOL_TYPE " flgs = %s < 0;\n", sstr);
662: printf ("\t" BOOL_TYPE " flgo = %s < 0;\n", dstr);
663: printf ("\t" BOOL_TYPE " flgn = %s < 0;\n", vstr);
1.1 root 664: break;
665: }
1.1.1.3 root 666:
1.1.1.5 root 667: switch (type) {
1.1 root 668: case flag_logical:
1.1.1.7 root 669: printf ("\tCLEAR_CZNV;\n");
670: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
671: printf ("\tSET_NFLG (%s < 0);\n", vstr);
672: break;
673: case flag_logical_noclobber:
674: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
675: printf ("\tSET_NFLG (%s < 0);\n", vstr);
1.1 root 676: break;
677: case flag_av:
1.1.1.7 root 678: printf ("\tSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n");
1.1 root 679: break;
680: case flag_sv:
1.1.1.7 root 681: printf ("\tSET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));\n");
1.1 root 682: break;
683: case flag_zn:
1.1.1.7 root 684: printf ("\tSET_ZFLG (GET_ZFLG & (%s == 0));\n", vstr);
685: printf ("\tSET_NFLG (%s < 0);\n", vstr);
1.1 root 686: break;
687: case flag_add:
1.1.1.7 root 688: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
1.1.1.8 root 689: printf ("\tSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n");
1.1.1.7 root 690: printf ("\tSET_CFLG (%s < %s);\n", undstr, usstr);
691: duplicate_carry ();
692: printf ("\tSET_NFLG (flgn != 0);\n");
1.1 root 693: break;
694: case flag_sub:
1.1.1.7 root 695: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
696: printf ("\tSET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));\n");
697: printf ("\tSET_CFLG (%s > %s);\n", usstr, udstr);
1.1.1.8 root 698: duplicate_carry ();
1.1.1.7 root 699: printf ("\tSET_NFLG (flgn != 0);\n");
1.1 root 700: break;
701: case flag_addx:
1.1.1.7 root 702: printf ("\tSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n"); /* minterm SON: 0x42 */
703: printf ("\tSET_CFLG (flgs ^ ((flgs ^ flgo) & (flgo ^ flgn)));\n"); /* minterm SON: 0xD4 */
704: duplicate_carry ();
1.1 root 705: break;
706: case flag_subx:
1.1.1.7 root 707: printf ("\tSET_VFLG ((flgs ^ flgo) & (flgo ^ flgn));\n"); /* minterm SON: 0x24 */
708: printf ("\tSET_CFLG (flgs ^ ((flgs ^ flgn) & (flgo ^ flgn)));\n"); /* minterm SON: 0xB2 */
709: duplicate_carry ();
1.1 root 710: break;
711: case flag_cmp:
1.1.1.7 root 712: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
713: printf ("\tSET_VFLG ((flgs != flgo) && (flgn != flgo));\n");
714: printf ("\tSET_CFLG (%s > %s);\n", usstr, udstr);
715: printf ("\tSET_NFLG (flgn != 0);\n");
1.1 root 716: break;
717: }
718: }
719:
1.1.1.5 root 720: static void genflags (flagtypes type, wordsizes size, char *value, char *src, char *dst)
1.1 root 721: {
1.1.1.11 root 722: /* Temporarily deleted 68k/ARM flag optimizations. I'd prefer to have
723: them in the appropriate m68k.h files and use just one copy of this
724: code here. The API can be changed if necessary. */
725: #ifdef OPTIMIZED_FLAGS
1.1 root 726: switch (type) {
1.1.1.5 root 727: case flag_add:
728: case flag_sub:
729: start_brace ();
1.1.1.3 root 730: printf ("\tuae_u32 %s;\n", value);
1.1 root 731: break;
732:
1.1.1.3 root 733: default:
1.1 root 734: break;
735: }
736:
1.1.1.3 root 737: /* At least some of those casts are fairly important! */
1.1.1.5 root 738: switch (type) {
1.1.1.7 root 739: case flag_logical_noclobber:
1.1.1.11 root 740: printf ("\t{uae_u32 oldcznv = GET_CZNV & ~(FLAGVAL_Z | FLAGVAL_N);\n");
1.1.1.7 root 741: if (strcmp (value, "0") == 0) {
1.1.1.11 root 742: printf ("\tSET_CZNV (olcznv | FLAGVAL_Z);\n");
1.1.1.7 root 743: } else {
744: switch (size) {
1.1.1.11 root 745: case sz_byte: printf ("\toptflag_testb ((uae_s8)(%s));\n", value); break;
746: case sz_word: printf ("\toptflag_testw ((uae_s16)(%s));\n", value); break;
747: case sz_long: printf ("\toptflag_testl ((uae_s32)(%s));\n", value); break;
1.1.1.7 root 748: }
1.1.1.11 root 749: printf ("\tIOR_CZNV (oldcznv);\n");
1.1.1.7 root 750: }
751: printf ("\t}\n");
752: return;
1.1 root 753: case flag_logical:
1.1.1.5 root 754: if (strcmp (value, "0") == 0) {
1.1.1.11 root 755: printf ("\tSET_CZNV (FLAGVAL_Z);\n");
1.1 root 756: } else {
1.1.1.5 root 757: switch (size) {
1.1.1.11 root 758: case sz_byte: printf ("\toptflag_testb ((uae_s8)(%s));\n", value); break;
759: case sz_word: printf ("\toptflag_testw ((uae_s16)(%s));\n", value); break;
760: case sz_long: printf ("\toptflag_testl ((uae_s32)(%s));\n", value); break;
1.1 root 761: }
762: }
763: return;
764:
765: case flag_add:
1.1.1.5 root 766: switch (size) {
1.1.1.11 root 767: case sz_byte: printf ("\toptflag_addb (%s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break;
768: case sz_word: printf ("\toptflag_addw (%s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break;
769: case sz_long: printf ("\toptflag_addl (%s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break;
1.1 root 770: }
771: return;
772:
773: case flag_sub:
1.1.1.5 root 774: switch (size) {
1.1.1.11 root 775: case sz_byte: printf ("\toptflag_subb (%s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break;
776: case sz_word: printf ("\toptflag_subw (%s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break;
777: case sz_long: printf ("\toptflag_subl (%s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break;
1.1 root 778: }
779: return;
780:
781: case flag_cmp:
1.1.1.5 root 782: switch (size) {
1.1.1.11 root 783: case sz_byte: printf ("\toptflag_cmpb ((uae_s8)(%s), (uae_s8)(%s));\n", src, dst); break;
784: case sz_word: printf ("\toptflag_cmpw ((uae_s16)(%s), (uae_s16)(%s));\n", src, dst); break;
785: case sz_long: printf ("\toptflag_cmpl ((uae_s32)(%s), (uae_s32)(%s));\n", src, dst); break;
1.1 root 786: }
787: return;
1.1.1.5 root 788:
1.1.1.3 root 789: default:
790: break;
1.1 root 791: }
792: #endif
1.1.1.11 root 793:
1.1.1.5 root 794: genflags_normal (type, size, value, src, dst);
1.1 root 795: }
1.1.1.3 root 796:
1.1.1.7 root 797: static void force_range_for_rox (const char *var, wordsizes size)
798: {
799: /* Could do a modulo operation here... which one is faster? */
800: switch (size) {
801: case sz_long:
802: printf ("\tif (%s >= 33) %s -= 33;\n", var, var);
803: break;
804: case sz_word:
805: printf ("\tif (%s >= 34) %s -= 34;\n", var, var);
806: printf ("\tif (%s >= 17) %s -= 17;\n", var, var);
807: break;
808: case sz_byte:
809: printf ("\tif (%s >= 36) %s -= 36;\n", var, var);
810: printf ("\tif (%s >= 18) %s -= 18;\n", var, var);
811: printf ("\tif (%s >= 9) %s -= 9;\n", var, var);
812: break;
813: }
814: }
815:
816: static const char *cmask (wordsizes size)
817: {
818: switch (size) {
819: case sz_byte: return "0x80";
820: case sz_word: return "0x8000";
821: case sz_long: return "0x80000000";
822: default: abort ();
823: }
824: }
825:
826: static int source_is_imm1_8 (struct instr *i)
827: {
828: return i->stype == 3;
829: }
830:
1.1.1.5 root 831: static void gen_opcode (unsigned long int opcode)
1.1 root 832: {
1.1.1.7 root 833: struct instr *curi = table68k + opcode;
1.1.1.11 root 834: insn_n_cycles = 4;
1.1.1.5 root 835:
1.1 root 836: start_brace ();
1.1.1.3 root 837: #if 0
838: printf ("uae_u8 *m68k_pc = regs.pc_p;\n");
839: #endif
840: m68k_pc_offset = 2;
1.1.1.7 root 841: switch (curi->plev) {
1.1.1.11 root 842: case 0: /* not privileged */
1.1 root 843: break;
1.1.1.11 root 844: case 1: /* unprivileged only on 68000 */
1.1.1.3 root 845: if (cpu_level == 0)
1.1 root 846: break;
1.1.1.3 root 847: if (next_cpu_level < 0)
848: next_cpu_level = 0;
849:
1.1.1.5 root 850: /* fall through */
1.1.1.11 root 851: case 2: /* priviledged */
1.1.1.3 root 852: printf ("if (!regs.s) { Exception(8,0); goto %s; }\n", endlabelstr);
1.1.1.5 root 853: need_endlabel = 1;
854: start_brace ();
1.1 root 855: break;
1.1.1.11 root 856: case 3: /* privileged if size == word */
1.1.1.7 root 857: if (curi->size == sz_byte)
1.1 root 858: break;
1.1.1.3 root 859: printf ("if (!regs.s) { Exception(8,0); goto %s; }\n", endlabelstr);
1.1.1.5 root 860: need_endlabel = 1;
861: start_brace ();
1.1 root 862: break;
863: }
1.1.1.7 root 864: switch (curi->mnemo) {
1.1.1.11 root 865: case i_OR:
866: case i_AND:
867: case i_EOR:
1.1.1.7 root 868: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
869: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
870: printf ("\tsrc %c= dst;\n", curi->mnemo == i_OR ? '|' : curi->mnemo == i_AND ? '&' : '^');
871: genflags (flag_logical, curi->size, "src", "", "");
872: genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 873: break;
1.1.1.11 root 874: case i_ORSR:
875: case i_EORSR:
1.1.1.3 root 876: printf ("\tMakeSR();\n");
1.1.1.7 root 877: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
878: if (curi->size == sz_byte) {
1.1.1.3 root 879: printf ("\tsrc &= 0xFF;\n");
1.1 root 880: }
1.1.1.7 root 881: printf ("\tregs.sr %c= src;\n", curi->mnemo == i_EORSR ? '^' : '|');
1.1.1.3 root 882: printf ("\tMakeFromSR();\n");
1.1 root 883: break;
1.1.1.11 root 884: case i_ANDSR:
1.1.1.3 root 885: printf ("\tMakeSR();\n");
1.1.1.7 root 886: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
887: if (curi->size == sz_byte) {
1.1.1.3 root 888: printf ("\tsrc |= 0xFF00;\n");
1.1 root 889: }
1.1.1.3 root 890: printf ("\tregs.sr &= src;\n");
891: printf ("\tMakeFromSR();\n");
1.1 root 892: break;
1.1.1.11 root 893: case i_SUB:
1.1.1.7 root 894: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
895: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 896: start_brace ();
1.1.1.7 root 897: genflags (flag_sub, curi->size, "newv", "src", "dst");
898: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 899: break;
1.1.1.11 root 900: case i_SUBA:
1.1.1.7 root 901: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
902: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1 root 903: start_brace ();
1.1.1.3 root 904: printf ("\tuae_u32 newv = dst - src;\n");
1.1.1.7 root 905: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1 root 906: break;
1.1.1.11 root 907: case i_SUBX:
1.1.1.7 root 908: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
909: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 910: start_brace ();
1.1.1.7 root 911: printf ("\tuae_u32 newv = dst - src - (GET_XFLG ? 1 : 0);\n");
912: genflags (flag_subx, curi->size, "newv", "src", "dst");
913: genflags (flag_zn, curi->size, "newv", "", "");
914: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 915: break;
1.1.1.11 root 916: case i_SBCD:
1.1 root 917: /* Let's hope this works... */
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");
923: printf ("\tuae_u16 newv;\n");
1.1.1.7 root 924: printf ("\tint cflg;\n");
1.1.1.3 root 925: printf ("\tif (newv_lo > 9) { newv_lo-=6; newv_hi-=0x10; }\n");
926: printf ("\tnewv = newv_hi + (newv_lo & 0xF);");
1.1.1.12! root 927: printf ("\tcflg = (newv_hi & 0x1F0) > 0x90;\n");
! 928: printf ("\tSET_CFLG (cflg);\n");
1.1.1.7 root 929: duplicate_carry ();
930: printf ("\tif (cflg) newv -= 0x60;\n");
931: genflags (flag_zn, curi->size, "newv", "", "");
932: genflags (flag_sv, curi->size, "newv", "src", "dst");
933: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 934: break;
1.1.1.11 root 935: case i_ADD:
1.1.1.7 root 936: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
937: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 938: start_brace ();
1.1.1.7 root 939: genflags (flag_add, curi->size, "newv", "src", "dst");
940: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 941: break;
1.1.1.11 root 942: case i_ADDA:
1.1.1.7 root 943: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
944: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1 root 945: start_brace ();
1.1.1.3 root 946: printf ("\tuae_u32 newv = dst + src;\n");
1.1.1.7 root 947: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1 root 948: break;
1.1.1.11 root 949: case i_ADDX:
1.1.1.7 root 950: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
951: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 952: start_brace ();
1.1.1.7 root 953: printf ("\tuae_u32 newv = dst + src + (GET_XFLG ? 1 : 0);\n");
954: genflags (flag_addx, curi->size, "newv", "src", "dst");
955: genflags (flag_zn, curi->size, "newv", "", "");
956: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 957: break;
1.1.1.11 root 958: case i_ABCD:
1.1.1.7 root 959: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
960: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 961: start_brace ();
1.1.1.7 root 962: printf ("\tuae_u16 newv_lo = (src & 0xF) + (dst & 0xF) + (GET_XFLG ? 1 : 0);\n");
1.1.1.3 root 963: printf ("\tuae_u16 newv_hi = (src & 0xF0) + (dst & 0xF0);\n");
964: printf ("\tuae_u16 newv;\n");
1.1.1.7 root 965: printf ("\tint cflg;\n");
1.1.1.3 root 966: printf ("\tif (newv_lo > 9) { newv_lo +=6; }\n");
967: printf ("\tnewv = newv_hi + newv_lo;");
1.1.1.12! root 968: printf ("\tcflg = (newv & 0x1F0) > 0x90;\n");
! 969: printf ("\tSET_CFLG (cflg);\n");
1.1.1.7 root 970: duplicate_carry ();
971: printf ("\tif (cflg) newv += 0x60;\n");
972: genflags (flag_zn, curi->size, "newv", "", "");
973: genflags (flag_sv, curi->size, "newv", "src", "dst");
974: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 975: break;
1.1.1.11 root 976: case i_NEG:
1.1.1.7 root 977: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1 root 978: start_brace ();
1.1.1.7 root 979: genflags (flag_sub, curi->size, "dst", "src", "0");
980: genastore ("dst", curi->smode, "srcreg", curi->size, "src");
1.1 root 981: break;
1.1.1.11 root 982: case i_NEGX:
1.1.1.7 root 983: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1 root 984: start_brace ();
1.1.1.7 root 985: printf ("\tuae_u32 newv = 0 - src - (GET_XFLG ? 1 : 0);\n");
986: genflags (flag_subx, curi->size, "newv", "src", "0");
987: genflags (flag_zn, curi->size, "newv", "", "");
988: genastore ("newv", curi->smode, "srcreg", curi->size, "src");
1.1 root 989: break;
1.1.1.11 root 990: case i_NBCD:
1.1.1.7 root 991: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1 root 992: start_brace ();
1.1.1.7 root 993: printf ("\tuae_u16 newv_lo = - (src & 0xF) - (GET_XFLG ? 1 : 0);\n");
1.1.1.3 root 994: printf ("\tuae_u16 newv_hi = - (src & 0xF0);\n");
995: printf ("\tuae_u16 newv;\n");
1.1.1.7 root 996: printf ("\tint cflg;\n");
1.1.1.3 root 997: printf ("\tif (newv_lo > 9) { newv_lo-=6; newv_hi-=0x10; }\n");
998: printf ("\tnewv = newv_hi + (newv_lo & 0xF);");
1.1.1.12! root 999: printf ("\tcflg = cflg = (newv_hi & 0x1F0) > 0x90;\n");
! 1000: printf ("\tSET_CFLG (cflg);\n");
1.1.1.8 root 1001: duplicate_carry();
1.1.1.7 root 1002: printf ("\tif (cflg) newv -= 0x60;\n");
1003: genflags (flag_zn, curi->size, "newv", "", "");
1004: genastore ("newv", curi->smode, "srcreg", curi->size, "src");
1.1 root 1005: break;
1.1.1.11 root 1006: case i_CLR:
1.1.1.7 root 1007: genamode (curi->smode, "srcreg", curi->size, "src", 2, 0);
1008: genflags (flag_logical, curi->size, "0", "", "");
1009: genastore ("0", curi->smode, "srcreg", curi->size, "src");
1.1 root 1010: break;
1.1.1.11 root 1011: case i_NOT:
1.1.1.7 root 1012: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1 root 1013: start_brace ();
1.1.1.3 root 1014: printf ("\tuae_u32 dst = ~src;\n");
1.1.1.7 root 1015: genflags (flag_logical, curi->size, "dst", "", "");
1016: genastore ("dst", curi->smode, "srcreg", curi->size, "src");
1.1 root 1017: break;
1.1.1.11 root 1018: case i_TST:
1.1.1.7 root 1019: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1020: genflags (flag_logical, curi->size, "src", "", "");
1.1 root 1021: break;
1.1.1.11 root 1022: case i_BTST:
1.1.1.7 root 1023: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1024: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1025: if (curi->size == sz_byte)
1.1.1.3 root 1026: printf ("\tsrc &= 7;\n");
1.1 root 1027: else
1.1.1.3 root 1028: printf ("\tsrc &= 31;\n");
1.1.1.7 root 1029: printf ("\tSET_ZFLG (1 ^ ((dst >> src) & 1));\n");
1.1 root 1030: break;
1.1.1.11 root 1031: case i_BCHG:
1.1.1.7 root 1032: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1033: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1034: if (curi->size == sz_byte)
1.1.1.3 root 1035: printf ("\tsrc &= 7;\n");
1.1 root 1036: else
1.1.1.3 root 1037: printf ("\tsrc &= 31;\n");
1038: printf ("\tdst ^= (1 << src);\n");
1.1.1.9 root 1039: printf ("\tSET_ZFLG (((uae_u32)dst & (1 << src)) >> src);\n");
1.1.1.7 root 1040: genastore ("dst", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1041: break;
1.1.1.11 root 1042: case i_BCLR:
1.1.1.7 root 1043: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1044: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1045: if (curi->size == sz_byte)
1.1.1.3 root 1046: printf ("\tsrc &= 7;\n");
1.1 root 1047: else
1.1.1.3 root 1048: printf ("\tsrc &= 31;\n");
1.1.1.7 root 1049: printf ("\tSET_ZFLG (1 ^ ((dst >> src) & 1));\n");
1.1.1.3 root 1050: printf ("\tdst &= ~(1 << src);\n");
1.1.1.7 root 1051: genastore ("dst", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1052: break;
1.1.1.11 root 1053: case i_BSET:
1.1.1.7 root 1054: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1055: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1056: if (curi->size == sz_byte)
1.1.1.3 root 1057: printf ("\tsrc &= 7;\n");
1.1 root 1058: else
1.1.1.3 root 1059: printf ("\tsrc &= 31;\n");
1.1.1.7 root 1060: printf ("\tSET_ZFLG (1 ^ ((dst >> src) & 1));\n");
1.1.1.3 root 1061: printf ("\tdst |= (1 << src);\n");
1.1.1.7 root 1062: genastore ("dst", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1063: break;
1.1.1.11 root 1064: case i_CMPM:
1065: case i_CMP:
1.1.1.7 root 1066: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1067: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 1068: start_brace ();
1.1.1.7 root 1069: genflags (flag_cmp, curi->size, "newv", "src", "dst");
1.1 root 1070: break;
1.1.1.11 root 1071: case i_CMPA:
1.1.1.7 root 1072: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1073: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1 root 1074: start_brace ();
1.1.1.5 root 1075: genflags (flag_cmp, sz_long, "newv", "src", "dst");
1.1 root 1076: break;
1077: /* The next two are coded a little unconventional, but they are doing
1078: * weird things... */
1.1.1.11 root 1079: case i_MVPRM:
1.1.1.7 root 1080: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.5 root 1081:
1082: printf ("\tuaecptr memp = m68k_areg(regs, dstreg) + (uae_s32)(uae_s16)%s;\n", gen_nextiword ());
1.1.1.7 root 1083: if (curi->size == sz_word) {
1.1.1.3 root 1084: printf ("\tput_byte(memp, src >> 8); put_byte(memp + 2, src);\n");
1.1 root 1085: } else {
1.1.1.3 root 1086: printf ("\tput_byte(memp, src >> 24); put_byte(memp + 2, src >> 16);\n");
1087: printf ("\tput_byte(memp + 4, src >> 8); put_byte(memp + 6, src);\n");
1.1 root 1088: }
1089: break;
1.1.1.11 root 1090: case i_MVPMR:
1.1.1.5 root 1091: printf ("\tuaecptr memp = m68k_areg(regs, srcreg) + (uae_s32)(uae_s16)%s;\n", gen_nextiword ());
1.1.1.7 root 1092: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1093: if (curi->size == sz_word) {
1.1.1.3 root 1094: printf ("\tuae_u16 val = (get_byte(memp) << 8) + get_byte(memp + 2);\n");
1.1 root 1095: } else {
1.1.1.3 root 1096: printf ("\tuae_u32 val = (get_byte(memp) << 24) + (get_byte(memp + 2) << 16)\n");
1097: printf (" + (get_byte(memp + 4) << 8) + get_byte(memp + 6);\n");
1.1 root 1098: }
1.1.1.7 root 1099: genastore ("val", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1100: break;
1.1.1.11 root 1101: case i_MOVE:
1.1.1.7 root 1102: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1103: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1104: genflags (flag_logical, curi->size, "src", "", "");
1105: genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1106: break;
1.1.1.11 root 1107: case i_MOVEA:
1.1.1.7 root 1108: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1109: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1110: if (curi->size == sz_word) {
1.1.1.3 root 1111: printf ("\tuae_u32 val = (uae_s32)(uae_s16)src;\n");
1.1 root 1112: } else {
1.1.1.3 root 1113: printf ("\tuae_u32 val = src;\n");
1.1 root 1114: }
1.1.1.7 root 1115: genastore ("val", curi->dmode, "dstreg", sz_long, "dst");
1.1 root 1116: break;
1.1.1.11 root 1117: case i_MVSR2:
1.1.1.7 root 1118: genamode (curi->smode, "srcreg", sz_word, "src", 2, 0);
1.1.1.3 root 1119: printf ("\tMakeSR();\n");
1.1.1.7 root 1120: if (curi->size == sz_byte)
1121: genastore ("regs.sr & 0xff", curi->smode, "srcreg", sz_word, "src");
1.1 root 1122: else
1.1.1.7 root 1123: genastore ("regs.sr", curi->smode, "srcreg", sz_word, "src");
1.1 root 1124: break;
1.1.1.11 root 1125: case i_MV2SR:
1.1.1.7 root 1126: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1127: if (curi->size == sz_byte)
1.1.1.3 root 1128: printf ("\tMakeSR();\n\tregs.sr &= 0xFF00;\n\tregs.sr |= src & 0xFF;\n");
1129: else {
1130: printf ("\tregs.sr = src;\n");
1.1 root 1131: }
1.1.1.3 root 1132: printf ("\tMakeFromSR();\n");
1.1 root 1133: break;
1.1.1.11 root 1134: case i_SWAP:
1.1.1.7 root 1135: genamode (curi->smode, "srcreg", sz_long, "src", 1, 0);
1.1 root 1136: start_brace ();
1.1.1.3 root 1137: printf ("\tuae_u32 dst = ((src >> 16)&0xFFFF) | ((src&0xFFFF)<<16);\n");
1.1.1.5 root 1138: genflags (flag_logical, sz_long, "dst", "", "");
1.1.1.7 root 1139: genastore ("dst", curi->smode, "srcreg", sz_long, "src");
1.1 root 1140: break;
1.1.1.11 root 1141: case i_EXG:
1.1.1.7 root 1142: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1143: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1144: genastore ("dst", curi->smode, "srcreg", curi->size, "src");
1145: genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1146: break;
1.1.1.11 root 1147: case i_EXT:
1.1.1.7 root 1148: genamode (curi->smode, "srcreg", sz_long, "src", 1, 0);
1.1 root 1149: start_brace ();
1.1.1.7 root 1150: switch (curi->size) {
1.1.1.11 root 1151: case sz_byte: printf ("\tuae_u32 dst = (uae_s32)(uae_s8)src;\n"); break;
1152: case sz_word: printf ("\tuae_u16 dst = (uae_s16)(uae_s8)src;\n"); break;
1153: case sz_long: printf ("\tuae_u32 dst = (uae_s32)(uae_s16)src;\n"); break;
1154: default: abort ();
1.1 root 1155: }
1.1.1.5 root 1156: genflags (flag_logical,
1.1.1.7 root 1157: curi->size == sz_word ? sz_word : sz_long, "dst", "", "");
1158: genastore ("dst", curi->smode, "srcreg",
1159: curi->size == sz_word ? sz_word : sz_long, "src");
1.1 root 1160: break;
1.1.1.11 root 1161: case i_MVMEL:
1.1.1.5 root 1162: genmovemel (opcode);
1.1 root 1163: break;
1.1.1.11 root 1164: case i_MVMLE:
1.1.1.5 root 1165: genmovemle (opcode);
1.1 root 1166: break;
1.1.1.11 root 1167: case i_TRAP:
1.1.1.7 root 1168: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.5 root 1169: sync_m68k_pc ();
1.1.1.3 root 1170: printf ("\tException(src+32,0);\n");
1171: m68k_pc_offset = 0;
1.1 root 1172: break;
1.1.1.11 root 1173: case i_MVR2USP:
1.1.1.7 root 1174: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.3 root 1175: printf ("\tregs.usp = src;\n");
1.1 root 1176: break;
1.1.1.11 root 1177: case i_MVUSP2R:
1.1.1.7 root 1178: genamode (curi->smode, "srcreg", curi->size, "src", 2, 0);
1179: genastore ("regs.usp", curi->smode, "srcreg", curi->size, "src");
1.1 root 1180: break;
1.1.1.11 root 1181: case i_RESET:
1.1.1.3 root 1182: printf ("\tcustomreset();\n");
1.1 root 1183: break;
1.1.1.11 root 1184: case i_NOP:
1.1 root 1185: break;
1.1.1.11 root 1186: case i_STOP:
1.1.1.7 root 1187: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.3 root 1188: printf ("\tregs.sr = src;\n");
1189: printf ("\tMakeFromSR();\n");
1190: printf ("\tm68k_setstopped(1);\n");
1.1 root 1191: break;
1.1.1.11 root 1192: case i_RTE:
1.1.1.3 root 1193: if (cpu_level == 0) {
1194: genamode (Aipi, "7", sz_word, "sr", 1, 0);
1195: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1196: printf ("\tregs.sr = sr; m68k_setpc_rte(pc);\n");
1197: fill_prefetch_0 ();
1198: printf ("\tMakeFromSR();\n");
1199: } else {
1.1 root 1200: int old_brace_level = n_braces;
1.1.1.3 root 1201: if (next_cpu_level < 0)
1202: next_cpu_level = 0;
1203: printf ("\tuae_u16 newsr; uae_u32 newpc; for (;;) {\n");
1204: genamode (Aipi, "7", sz_word, "sr", 1, 0);
1205: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1206: genamode (Aipi, "7", sz_word, "format", 1, 0);
1207: printf ("\tnewsr = sr; newpc = pc;\n");
1208: printf ("\tif ((format & 0xF000) == 0x0000) { break; }\n");
1209: printf ("\telse if ((format & 0xF000) == 0x1000) { ; }\n");
1210: printf ("\telse if ((format & 0xF000) == 0x2000) { m68k_areg(regs, 7) += 4; break; }\n");
1211: printf ("\telse if ((format & 0xF000) == 0x8000) { m68k_areg(regs, 7) += 50; break; }\n");
1212: printf ("\telse if ((format & 0xF000) == 0x9000) { m68k_areg(regs, 7) += 12; break; }\n");
1213: printf ("\telse if ((format & 0xF000) == 0xa000) { m68k_areg(regs, 7) += 24; break; }\n");
1214: printf ("\telse if ((format & 0xF000) == 0xb000) { m68k_areg(regs, 7) += 84; break; }\n");
1215: printf ("\telse { Exception(14,0); goto %s; }\n", endlabelstr);
1216: printf ("\tregs.sr = newsr; MakeFromSR();\n}\n");
1.1 root 1217: pop_braces (old_brace_level);
1.1.1.3 root 1218: printf ("\tregs.sr = newsr; MakeFromSR();\n");
1219: printf ("\tm68k_setpc_rte(newpc);\n");
1220: fill_prefetch_0 ();
1.1.1.5 root 1221: need_endlabel = 1;
1.1 root 1222: }
1.1.1.3 root 1223: /* PC is set and prefetch filled. */
1224: m68k_pc_offset = 0;
1.1 root 1225: break;
1.1.1.11 root 1226: case i_RTD:
1.1.1.3 root 1227: printf ("\tcompiler_flush_jsr_stack();\n");
1228: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1.1.1.7 root 1229: genamode (curi->smode, "srcreg", curi->size, "offs", 1, 0);
1.1.1.3 root 1230: printf ("\tm68k_areg(regs, 7) += offs;\n");
1231: printf ("\tm68k_setpc_rte(pc);\n");
1232: fill_prefetch_0 ();
1233: /* PC is set and prefetch filled. */
1234: m68k_pc_offset = 0;
1.1 root 1235: break;
1.1.1.11 root 1236: case i_LINK:
1.1.1.3 root 1237: genamode (Apdi, "7", sz_long, "old", 2, 0);
1.1.1.7 root 1238: genamode (curi->smode, "srcreg", sz_long, "src", 1, 0);
1.1.1.3 root 1239: genastore ("src", Apdi, "7", sz_long, "old");
1.1.1.7 root 1240: genastore ("m68k_areg(regs, 7)", curi->smode, "srcreg", sz_long, "src");
1241: genamode (curi->dmode, "dstreg", curi->size, "offs", 1, 0);
1.1.1.3 root 1242: printf ("\tm68k_areg(regs, 7) += offs;\n");
1.1 root 1243: break;
1.1.1.11 root 1244: case i_UNLK:
1.1.1.7 root 1245: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.3 root 1246: printf ("\tm68k_areg(regs, 7) = src;\n");
1247: genamode (Aipi, "7", sz_long, "old", 1, 0);
1.1.1.7 root 1248: genastore ("old", curi->smode, "srcreg", curi->size, "src");
1.1 root 1249: break;
1.1.1.11 root 1250: case i_RTS:
1.1.1.3 root 1251: printf ("\tm68k_do_rts();\n");
1252: fill_prefetch_0 ();
1253: m68k_pc_offset = 0;
1.1 root 1254: break;
1.1.1.11 root 1255: case i_TRAPV:
1.1.1.3 root 1256: sync_m68k_pc ();
1.1.1.7 root 1257: printf ("\tif (GET_VFLG) { Exception(7,m68k_getpc()); goto %s; }\n", endlabelstr);
1.1.1.5 root 1258: need_endlabel = 1;
1.1 root 1259: break;
1.1.1.11 root 1260: case i_RTR:
1.1.1.3 root 1261: printf ("\tcompiler_flush_jsr_stack();\n");
1262: printf ("\tMakeSR();\n");
1263: genamode (Aipi, "7", sz_word, "sr", 1, 0);
1264: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1265: printf ("\tregs.sr &= 0xFF00; sr &= 0xFF;\n");
1266: printf ("\tregs.sr |= sr; m68k_setpc(pc);\n");
1267: fill_prefetch_0 ();
1268: printf ("\tMakeFromSR();\n");
1269: m68k_pc_offset = 0;
1.1 root 1270: break;
1.1.1.11 root 1271: case i_JSR:
1.1.1.7 root 1272: genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
1.1.1.3 root 1273: printf ("\tm68k_do_jsr(m68k_getpc() + %d, srca);\n", m68k_pc_offset);
1274: fill_prefetch_0 ();
1275: m68k_pc_offset = 0;
1276: break;
1.1.1.11 root 1277: case i_JMP:
1.1.1.7 root 1278: genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
1.1.1.3 root 1279: printf ("\tm68k_setpc(srca);\n");
1280: fill_prefetch_0 ();
1281: m68k_pc_offset = 0;
1.1 root 1282: break;
1.1.1.11 root 1283: case i_BSR:
1.1.1.7 root 1284: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.3 root 1285: printf ("\tuae_s32 s = (uae_s32)src + 2;\n");
1286: if (using_exception_3) {
1287: printf ("\tif (src & 1) {\n");
1288: printf ("\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1289: printf ("\t\tlast_fault_for_exception_3 = m68k_getpc() + s;\n");
1290: printf ("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1291: printf ("\t}\n");
1.1.1.5 root 1292: need_endlabel = 1;
1.1.1.3 root 1293: }
1294: printf ("\tm68k_do_bsr(m68k_getpc() + %d, s);\n", m68k_pc_offset);
1295: fill_prefetch_0 ();
1296: m68k_pc_offset = 0;
1.1 root 1297: break;
1.1.1.11 root 1298: case i_Bcc:
1.1.1.7 root 1299: if (curi->size == sz_long) {
1.1.1.3 root 1300: if (cpu_level < 2) {
1301: printf ("\tm68k_incpc(2);\n");
1.1.1.7 root 1302: printf ("\tif (!cctrue(%d)) goto %s;\n", curi->cc, endlabelstr);
1.1.1.3 root 1303: printf ("\t\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1304: printf ("\t\tlast_fault_for_exception_3 = m68k_getpc() + 1;\n");
1305: printf ("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1.1.1.5 root 1306: need_endlabel = 1;
1.1.1.3 root 1307: } else {
1308: if (next_cpu_level < 1)
1309: next_cpu_level = 1;
1310: }
1311: }
1.1.1.7 root 1312: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1313: printf ("\tif (!cctrue(%d)) goto didnt_jump;\n", curi->cc);
1.1.1.3 root 1314: if (using_exception_3) {
1315: printf ("\tif (src & 1) {\n");
1316: printf ("\t\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1317: printf ("\t\tlast_fault_for_exception_3 = m68k_getpc() + 2 + (uae_s32)src;\n");
1318: printf ("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1319: printf ("\t}\n");
1.1.1.5 root 1320: need_endlabel = 1;
1.1.1.3 root 1321: }
1.1 root 1322: #ifdef USE_COMPILER
1.1.1.3 root 1323: printf ("\tm68k_setpc_bcc(m68k_getpc() + 2 + (uae_s32)src);\n");
1.1 root 1324: #else
1.1.1.3 root 1325: printf ("\tm68k_incpc ((uae_s32)src + 2);\n");
1.1 root 1326: #endif
1.1.1.3 root 1327: fill_prefetch_0 ();
1.1.1.11 root 1328: printf ("\treturn 5;\n");
1.1.1.3 root 1329: printf ("didnt_jump:;\n");
1.1.1.5 root 1330: need_endlabel = 1;
1.1.1.11 root 1331: insn_n_cycles = curi->size == sz_byte ? 8 : 12;
1.1 root 1332: break;
1.1.1.11 root 1333: case i_LEA:
1.1.1.7 root 1334: genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
1335: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1336: genastore ("srca", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1337: break;
1.1.1.11 root 1338: case i_PEA:
1.1.1.7 root 1339: genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
1.1.1.3 root 1340: genamode (Apdi, "7", sz_long, "dst", 2, 0);
1341: genastore ("srca", Apdi, "7", sz_long, "dst");
1.1 root 1342: break;
1.1.1.11 root 1343: case i_DBcc:
1.1.1.7 root 1344: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1345: genamode (curi->dmode, "dstreg", curi->size, "offs", 1, 0);
1.1.1.3 root 1346:
1.1.1.7 root 1347: printf ("\tif (!cctrue(%d)) {\n", curi->cc);
1348: genastore ("(src-1)", curi->smode, "srcreg", curi->size, "src");
1.1.1.3 root 1349:
1350: printf ("\t\tif (src) {\n");
1351: if (using_exception_3) {
1352: printf ("\t\t\tif (offs & 1) {\n");
1353: printf ("\t\t\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1354: printf ("\t\t\tlast_fault_for_exception_3 = m68k_getpc() + 2 + (uae_s32)offs + 2;\n");
1355: printf ("\t\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1356: printf ("\t\t}\n");
1.1.1.5 root 1357: need_endlabel = 1;
1.1.1.3 root 1358: }
1.1 root 1359: #ifdef USE_COMPILER
1.1.1.3 root 1360: printf ("\t\t\tm68k_setpc_bcc(m68k_getpc() + (uae_s32)offs + 2);\n");
1.1 root 1361: #else
1.1.1.3 root 1362: printf ("\t\t\tm68k_incpc((uae_s32)offs + 2);\n");
1.1 root 1363: #endif
1.1.1.3 root 1364: fill_prefetch_0 ();
1.1.1.11 root 1365: /* ??? Cycle count is a guess. */
1366: printf ("\t\treturn 6;\n");
1.1.1.3 root 1367: printf ("\t\t}\n");
1368: printf ("\t}\n");
1.1.1.11 root 1369: insn_n_cycles = 12;
1.1.1.5 root 1370: need_endlabel = 1;
1.1 root 1371: break;
1.1.1.11 root 1372: case i_Scc:
1.1.1.7 root 1373: genamode (curi->smode, "srcreg", curi->size, "src", 2, 0);
1.1 root 1374: start_brace ();
1.1.1.7 root 1375: printf ("\tint val = cctrue(%d) ? 0xff : 0;\n", curi->cc);
1376: genastore ("val", curi->smode, "srcreg", curi->size, "src");
1.1 root 1377: break;
1.1.1.11 root 1378: case i_DIVU:
1.1.1.3 root 1379: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1380: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1381: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1.1.10 root 1382: sync_m68k_pc ();
1.1.1.9 root 1383: /* Clear V flag when dividing by zero - Alcatraz Odyssey demo depends
1384: * on this (actually, it's doing a DIVS). */
1385: printf ("\tif (src == 0) { SET_VFLG (0); Exception (5, oldpc); goto %s; } else {\n", endlabelstr);
1.1.1.3 root 1386: printf ("\tuae_u32 newv = (uae_u32)dst / (uae_u32)(uae_u16)src;\n");
1387: printf ("\tuae_u32 rem = (uae_u32)dst %% (uae_u32)(uae_u16)src;\n");
1.1 root 1388: /* The N flag appears to be set each time there is an overflow.
1389: * Weird. */
1.1.1.7 root 1390: printf ("\tif (newv > 0xffff) { SET_VFLG (1); SET_NFLG (1); SET_CFLG (0); } else\n\t{\n");
1.1.1.5 root 1391: genflags (flag_logical, sz_word, "newv", "", "");
1.1.1.3 root 1392: printf ("\tnewv = (newv & 0xffff) | ((uae_u32)rem << 16);\n");
1.1.1.7 root 1393: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1.1.3 root 1394: printf ("\t}\n");
1395: printf ("\t}\n");
1.1.1.11 root 1396: insn_n_cycles += 136;
1.1.1.5 root 1397: need_endlabel = 1;
1.1.1.3 root 1398: break;
1.1.1.11 root 1399: case i_DIVS:
1.1.1.3 root 1400: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1401: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1402: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1.1.10 root 1403: sync_m68k_pc ();
1.1.1.9 root 1404: printf ("\tif (src == 0) { SET_VFLG (0); Exception(5,oldpc); goto %s; } else {\n", endlabelstr);
1.1.1.3 root 1405: printf ("\tuae_s32 newv = (uae_s32)dst / (uae_s32)(uae_s16)src;\n");
1406: printf ("\tuae_u16 rem = (uae_s32)dst %% (uae_s32)(uae_s16)src;\n");
1.1.1.7 root 1407: 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 1408: printf ("\tif (((uae_s16)rem < 0) != ((uae_s32)dst < 0)) rem = -rem;\n");
1.1.1.5 root 1409: genflags (flag_logical, sz_word, "newv", "", "");
1.1.1.3 root 1410: printf ("\tnewv = (newv & 0xffff) | ((uae_u32)rem << 16);\n");
1.1.1.7 root 1411: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1.1.3 root 1412: printf ("\t}\n");
1413: printf ("\t}\n");
1.1.1.11 root 1414: insn_n_cycles += 154;
1.1.1.5 root 1415: need_endlabel = 1;
1.1.1.3 root 1416: break;
1.1.1.11 root 1417: case i_MULU:
1.1.1.7 root 1418: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1419: genamode (curi->dmode, "dstreg", sz_word, "dst", 1, 0);
1.1 root 1420: start_brace ();
1.1.1.3 root 1421: printf ("\tuae_u32 newv = (uae_u32)(uae_u16)dst * (uae_u32)(uae_u16)src;\n");
1.1.1.5 root 1422: genflags (flag_logical, sz_long, "newv", "", "");
1.1.1.7 root 1423: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1.1.11 root 1424: insn_n_cycles += 66;
1.1 root 1425: break;
1.1.1.11 root 1426: case i_MULS:
1.1.1.7 root 1427: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1428: genamode (curi->dmode, "dstreg", sz_word, "dst", 1, 0);
1.1 root 1429: start_brace ();
1.1.1.3 root 1430: printf ("\tuae_u32 newv = (uae_s32)(uae_s16)dst * (uae_s32)(uae_s16)src;\n");
1.1.1.5 root 1431: genflags (flag_logical, sz_long, "newv", "", "");
1.1.1.7 root 1432: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1.1.11 root 1433: insn_n_cycles += 66;
1.1 root 1434: break;
1.1.1.11 root 1435: case i_CHK:
1.1.1.3 root 1436: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1437: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1438: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1439: printf ("\tif ((uae_s32)dst < 0) { SET_NFLG (1); Exception(6,oldpc); goto %s; }\n", endlabelstr);
1440: printf ("\telse if (dst > src) { SET_NFLG (0); Exception(6,oldpc); goto %s; }\n", endlabelstr);
1.1.1.5 root 1441: need_endlabel = 1;
1.1 root 1442: break;
1.1.1.3 root 1443:
1.1.1.11 root 1444: case i_CHK2:
1.1.1.3 root 1445: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1446: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1447: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1.1.1.3 root 1448: printf ("\t{uae_s32 upper,lower,reg = regs.regs[(extra >> 12) & 15];\n");
1.1.1.7 root 1449: switch (curi->size) {
1.1.1.11 root 1450: case sz_byte:
1.1.1.3 root 1451: printf ("\tlower=(uae_s32)(uae_s8)get_byte(dsta); upper = (uae_s32)(uae_s8)get_byte(dsta+1);\n");
1452: printf ("\tif ((extra & 0x8000) == 0) reg = (uae_s32)(uae_s8)reg;\n");
1453: break;
1.1.1.11 root 1454: case sz_word:
1.1.1.3 root 1455: printf ("\tlower=(uae_s32)(uae_s16)get_word(dsta); upper = (uae_s32)(uae_s16)get_word(dsta+2);\n");
1456: printf ("\tif ((extra & 0x8000) == 0) reg = (uae_s32)(uae_s16)reg;\n");
1457: break;
1.1.1.11 root 1458: case sz_long:
1.1.1.3 root 1459: printf ("\tlower=get_long(dsta); upper = get_long(dsta+4);\n");
1460: break;
1.1.1.11 root 1461: default:
1.1.1.5 root 1462: abort ();
1.1.1.3 root 1463: }
1.1.1.7 root 1464: printf ("\tSET_ZFLG (upper == reg || lower == reg);\n");
1465: printf ("\tSET_CFLG (lower <= upper ? reg < lower || reg > upper : reg > upper || reg < lower);\n");
1466: printf ("\tif ((extra & 0x800) && GET_CFLG) { Exception(6,oldpc); goto %s; }\n}\n", endlabelstr);
1.1.1.5 root 1467: need_endlabel = 1;
1.1.1.3 root 1468: break;
1469:
1.1.1.11 root 1470: case i_ASR:
1.1.1.7 root 1471: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1472: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1.1.3 root 1473: start_brace ();
1.1.1.7 root 1474: switch (curi->size) {
1.1.1.11 root 1475: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1476: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1477: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1478: default: abort ();
1.1 root 1479: }
1.1.1.7 root 1480: printf ("\tuae_u32 sign = (%s & val) >> %d;\n", cmask (curi->size), bit_size (curi->size) - 1);
1.1.1.3 root 1481: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1482: printf ("\tCLEAR_CZNV;\n");
1483: printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
1484: printf ("\t\tval = %s & (uae_u32)-sign;\n", bit_mask (curi->size));
1485: printf ("\t\tSET_CFLG (sign);\n");
1486: duplicate_carry ();
1487: if (source_is_imm1_8 (curi))
1488: printf ("\t} else {\n");
1489: else
1490: printf ("\t} else if (cnt > 0) {\n");
1491: printf ("\t\tval >>= cnt - 1;\n");
1492: printf ("\t\tSET_CFLG (val & 1);\n");
1493: duplicate_carry ();
1494: printf ("\t\tval >>= 1;\n");
1495: printf ("\t\tval |= (%s << (%d - cnt)) & (uae_u32)-sign;\n",
1496: bit_mask (curi->size),
1497: bit_size (curi->size));
1498: printf ("\t\tval &= %s;\n", bit_mask (curi->size));
1499: printf ("\t}\n");
1500: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1501: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1502: break;
1.1.1.11 root 1503: case i_ASL:
1.1.1.7 root 1504: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1505: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1506: start_brace ();
1.1.1.7 root 1507: switch (curi->size) {
1.1.1.11 root 1508: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1509: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1510: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1511: default: abort ();
1.1 root 1512: }
1.1.1.3 root 1513: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1514: printf ("\tCLEAR_CZNV;\n");
1515: printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
1516: printf ("\t\tSET_VFLG (val != 0);\n");
1517: printf ("\t\tSET_CFLG (cnt == %d ? val & 1 : 0);\n",
1518: bit_size (curi->size));
1519: duplicate_carry ();
1.1.1.3 root 1520: printf ("\t\tval = 0;\n");
1.1.1.7 root 1521: if (source_is_imm1_8 (curi))
1522: printf ("\t} else {\n");
1523: else
1524: printf ("\t} else if (cnt > 0) {\n");
1.1.1.3 root 1525: printf ("\t\tuae_u32 mask = (%s << (%d - cnt)) & %s;\n",
1.1.1.7 root 1526: bit_mask (curi->size),
1527: bit_size (curi->size) - 1,
1528: bit_mask (curi->size));
1529: printf ("\t\tSET_VFLG ((val & mask) != mask && (val & mask) != 0);\n");
1530: printf ("\t\tval <<= cnt - 1;\n");
1531: printf ("\t\tSET_CFLG ((val & %s) >> %d);\n", cmask (curi->size), bit_size (curi->size) - 1);
1532: duplicate_carry ();
1533: printf ("\t\tval <<= 1;\n");
1534: printf ("\t\tval &= %s;\n", bit_mask (curi->size));
1535: printf ("\t}\n");
1536: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1537: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1538: break;
1.1.1.11 root 1539: case i_LSR:
1.1.1.7 root 1540: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1541: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1542: start_brace ();
1.1.1.7 root 1543: switch (curi->size) {
1.1.1.11 root 1544: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1545: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1546: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1547: default: abort ();
1.1 root 1548: }
1.1.1.3 root 1549: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1550: printf ("\tCLEAR_CZNV;\n");
1551: printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
1552: printf ("\t\tSET_CFLG ((cnt == %d) & (val >> %d));\n",
1553: bit_size (curi->size), bit_size (curi->size) - 1);
1554: duplicate_carry ();
1.1.1.3 root 1555: printf ("\t\tval = 0;\n");
1.1.1.7 root 1556: if (source_is_imm1_8 (curi))
1557: printf ("\t} else {\n");
1558: else
1559: printf ("\t} else if (cnt > 0) {\n");
1560: printf ("\t\tval >>= cnt - 1;\n");
1561: printf ("\t\tSET_CFLG (val & 1);\n");
1562: duplicate_carry ();
1563: printf ("\t\tval >>= 1;\n");
1564: printf ("\t}\n");
1565: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1566: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1567: break;
1.1.1.11 root 1568: case i_LSL:
1.1.1.7 root 1569: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1570: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1571: start_brace ();
1.1.1.7 root 1572: switch (curi->size) {
1.1.1.11 root 1573: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1574: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1575: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1576: default: abort ();
1.1 root 1577: }
1.1.1.3 root 1578: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1579: printf ("\tCLEAR_CZNV;\n");
1580: printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
1581: printf ("\t\tSET_CFLG (cnt == %d ? val & 1 : 0);\n",
1582: bit_size (curi->size));
1583: duplicate_carry ();
1.1.1.3 root 1584: printf ("\t\tval = 0;\n");
1.1.1.7 root 1585: if (source_is_imm1_8 (curi))
1586: printf ("\t} else {\n");
1587: else
1588: printf ("\t} else if (cnt > 0) {\n");
1589: printf ("\t\tval <<= (cnt - 1);\n");
1590: printf ("\t\tSET_CFLG ((val & %s) >> %d);\n", cmask (curi->size), bit_size (curi->size) - 1);
1591: duplicate_carry ();
1592: printf ("\t\tval <<= 1;\n");
1593: printf ("\tval &= %s;\n", bit_mask (curi->size));
1594: printf ("\t}\n");
1595: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1596: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1597: break;
1.1.1.11 root 1598: case i_ROL:
1.1.1.7 root 1599: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1600: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1601: start_brace ();
1.1.1.7 root 1602: switch (curi->size) {
1.1.1.11 root 1603: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1604: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1605: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1606: default: abort ();
1.1 root 1607: }
1.1.1.3 root 1608: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1609: printf ("\tCLEAR_CZNV;\n");
1610: if (source_is_imm1_8 (curi))
1611: printf ("{");
1612: else
1613: printf ("\tif (cnt > 0) {\n");
1614: printf ("\tuae_u32 loval;\n");
1615: printf ("\tcnt &= %d;\n", bit_size (curi->size) - 1);
1616: printf ("\tloval = val >> (%d - cnt);\n", bit_size (curi->size));
1617: printf ("\tval <<= cnt;\n");
1618: printf ("\tval |= loval;\n");
1619: printf ("\tval &= %s;\n", bit_mask (curi->size));
1620: printf ("\tSET_CFLG (val & 1);\n");
1621: printf ("}\n");
1622: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1623: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1624: break;
1.1.1.11 root 1625: case i_ROR:
1.1.1.7 root 1626: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1627: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1628: start_brace ();
1.1.1.7 root 1629: switch (curi->size) {
1.1.1.11 root 1630: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1631: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1632: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1633: default: abort ();
1.1 root 1634: }
1.1.1.3 root 1635: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1636: printf ("\tCLEAR_CZNV;\n");
1637: if (source_is_imm1_8 (curi))
1638: printf ("{");
1639: else
1640: printf ("\tif (cnt > 0) {");
1641: printf ("\tuae_u32 hival;\n");
1642: printf ("\tcnt &= %d;\n", bit_size (curi->size) - 1);
1643: printf ("\thival = val << (%d - cnt);\n", bit_size (curi->size));
1644: printf ("\tval >>= cnt;\n");
1645: printf ("\tval |= hival;\n");
1646: printf ("\tval &= %s;\n", bit_mask (curi->size));
1647: printf ("\tSET_CFLG ((val & %s) >> %d);\n", cmask (curi->size), bit_size (curi->size) - 1);
1.1.1.3 root 1648: printf ("\t}\n");
1.1.1.7 root 1649: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1650: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1651: break;
1.1.1.11 root 1652: case i_ROXL:
1.1.1.7 root 1653: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1654: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1655: start_brace ();
1.1.1.7 root 1656: switch (curi->size) {
1.1.1.11 root 1657: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1658: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1659: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1660: default: abort ();
1.1 root 1661: }
1.1.1.3 root 1662: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1663: printf ("\tCLEAR_CZNV;\n");
1664: if (source_is_imm1_8 (curi))
1665: printf ("{");
1.1.1.12! root 1666: else {
! 1667: force_range_for_rox ("cnt", curi->size);
1.1.1.7 root 1668: printf ("\tif (cnt > 0) {\n");
1.1.1.12! root 1669: }
1.1.1.7 root 1670: printf ("\tcnt--;\n");
1671: printf ("\t{\n\tuae_u32 carry;\n");
1672: printf ("\tuae_u32 loval = val >> (%d - cnt);\n", bit_size (curi->size) - 1);
1673: printf ("\tcarry = loval & 1;\n");
1674: printf ("\tval = (((val << 1) | GET_XFLG) << cnt) | (loval >> 1);\n");
1675: printf ("\tSET_XFLG (carry);\n");
1676: printf ("\tval &= %s;\n", bit_mask (curi->size));
1677: printf ("\t} }\n");
1678: printf ("\tSET_CFLG (GET_XFLG);\n");
1679: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1680: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1681: break;
1.1.1.11 root 1682: case i_ROXR:
1.1.1.7 root 1683: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1684: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1685: start_brace ();
1.1.1.7 root 1686: switch (curi->size) {
1.1.1.11 root 1687: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1688: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1689: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1690: default: abort ();
1.1 root 1691: }
1.1.1.3 root 1692: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1693: printf ("\tCLEAR_CZNV;\n");
1694: if (source_is_imm1_8 (curi))
1695: printf ("{");
1.1.1.12! root 1696: else {
! 1697: force_range_for_rox ("cnt", curi->size);
1.1.1.7 root 1698: printf ("\tif (cnt > 0) {\n");
1.1.1.12! root 1699: }
1.1.1.7 root 1700: printf ("\tcnt--;\n");
1701: printf ("\t{\n\tuae_u32 carry;\n");
1702: printf ("\tuae_u32 hival = (val << 1) | GET_XFLG;\n");
1703: printf ("\thival <<= (%d - cnt);\n", bit_size (curi->size) - 1);
1704: printf ("\tval >>= cnt;\n");
1705: printf ("\tcarry = val & 1;\n");
1706: printf ("\tval >>= 1;\n");
1707: printf ("\tval |= hival;\n");
1708: printf ("\tSET_XFLG (carry);\n");
1709: printf ("\tval &= %s;\n", bit_mask (curi->size));
1710: printf ("\t} }\n");
1711: printf ("\tSET_CFLG (GET_XFLG);\n");
1712: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1713: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1714: break;
1.1.1.11 root 1715: case i_ASRW:
1.1.1.7 root 1716: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1717: start_brace ();
1.1.1.7 root 1718: switch (curi->size) {
1.1.1.11 root 1719: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1720: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1721: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1722: default: abort ();
1.1 root 1723: }
1.1.1.7 root 1724: printf ("\tuae_u32 sign = %s & val;\n", cmask (curi->size));
1725: printf ("\tuae_u32 cflg = val & 1;\n");
1726: printf ("\tval = (val >> 1) | sign;\n");
1727: genflags (flag_logical, curi->size, "val", "", "");
1728: printf ("\tSET_CFLG (cflg);\n");
1729: duplicate_carry ();
1730: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1731: break;
1.1.1.11 root 1732: case i_ASLW:
1.1.1.7 root 1733: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1734: start_brace ();
1.1.1.7 root 1735: switch (curi->size) {
1.1.1.11 root 1736: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1737: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1738: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1739: default: abort ();
1.1 root 1740: }
1.1.1.7 root 1741: printf ("\tuae_u32 sign = %s & val;\n", cmask (curi->size));
1742: printf ("\tuae_u32 sign2;\n");
1743: printf ("\tval <<= 1;\n");
1744: genflags (flag_logical, curi->size, "val", "", "");
1745: printf ("\tsign2 = %s & val;\n", cmask (curi->size));
1746: printf ("\tSET_CFLG (sign != 0);\n");
1747: duplicate_carry ();
1748:
1749: printf ("\tSET_VFLG (GET_VFLG | (sign2 != sign));\n");
1750: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1751: break;
1.1.1.11 root 1752: case i_LSRW:
1.1.1.7 root 1753: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1754: start_brace ();
1.1.1.7 root 1755: switch (curi->size) {
1.1.1.11 root 1756: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
1757: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
1758: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1759: default: abort ();
1.1 root 1760: }
1.1.1.7 root 1761: printf ("\tuae_u32 carry = val & 1;\n");
1.1.1.3 root 1762: printf ("\tval >>= 1;\n");
1.1.1.7 root 1763: genflags (flag_logical, curi->size, "val", "", "");
1764: printf ("SET_CFLG (carry);\n");
1765: duplicate_carry ();
1766: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1767: break;
1.1.1.11 root 1768: case i_LSLW:
1.1.1.7 root 1769: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1770: start_brace ();
1.1.1.7 root 1771: switch (curi->size) {
1.1.1.11 root 1772: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1773: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1774: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1775: default: abort ();
1.1 root 1776: }
1.1.1.7 root 1777: printf ("\tuae_u32 carry = val & %s;\n", cmask (curi->size));
1.1.1.3 root 1778: printf ("\tval <<= 1;\n");
1.1.1.7 root 1779: genflags (flag_logical, curi->size, "val", "", "");
1780: printf ("SET_CFLG (carry >> %d);\n", bit_size (curi->size) - 1);
1781: duplicate_carry ();
1782: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1783: break;
1.1.1.11 root 1784: case i_ROLW:
1.1.1.7 root 1785: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1786: start_brace ();
1.1.1.7 root 1787: switch (curi->size) {
1.1.1.11 root 1788: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1789: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1790: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1791: default: abort ();
1.1 root 1792: }
1.1.1.7 root 1793: printf ("\tuae_u32 carry = val & %s;\n", cmask (curi->size));
1.1.1.3 root 1794: printf ("\tval <<= 1;\n");
1.1.1.7 root 1795: printf ("\tif (carry) val |= 1;\n");
1796: genflags (flag_logical, curi->size, "val", "", "");
1797: printf ("SET_CFLG (carry >> %d);\n", bit_size (curi->size) - 1);
1798: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1799: break;
1.1.1.11 root 1800: case i_RORW:
1.1.1.7 root 1801: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1802: start_brace ();
1.1.1.7 root 1803: switch (curi->size) {
1.1.1.11 root 1804: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1805: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1806: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1807: default: abort ();
1.1 root 1808: }
1.1.1.7 root 1809: printf ("\tuae_u32 carry = val & 1;\n");
1.1.1.3 root 1810: printf ("\tval >>= 1;\n");
1.1.1.7 root 1811: printf ("\tif (carry) val |= %s;\n", cmask (curi->size));
1812: genflags (flag_logical, curi->size, "val", "", "");
1813: printf ("SET_CFLG (carry);\n");
1814: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1815: break;
1.1.1.11 root 1816: case i_ROXLW:
1.1.1.7 root 1817: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1818: start_brace ();
1.1.1.7 root 1819: switch (curi->size) {
1.1.1.11 root 1820: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1821: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1822: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1823: default: abort ();
1.1 root 1824: }
1.1.1.7 root 1825: printf ("\tuae_u32 carry = val & %s;\n", cmask (curi->size));
1.1.1.3 root 1826: printf ("\tval <<= 1;\n");
1.1.1.7 root 1827: printf ("\tif (GET_XFLG) val |= 1;\n");
1828: genflags (flag_logical, curi->size, "val", "", "");
1829: printf ("SET_CFLG (carry >> %d);\n", bit_size (curi->size) - 1);
1830: duplicate_carry ();
1831: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1832: break;
1.1.1.11 root 1833: case i_ROXRW:
1.1.1.7 root 1834: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1835: start_brace ();
1.1.1.7 root 1836: switch (curi->size) {
1.1.1.11 root 1837: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
1838: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
1839: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
1840: default: abort ();
1.1 root 1841: }
1.1.1.7 root 1842: printf ("\tuae_u32 carry = val & 1;\n");
1.1.1.3 root 1843: printf ("\tval >>= 1;\n");
1.1.1.7 root 1844: printf ("\tif (GET_XFLG) val |= %s;\n", cmask (curi->size));
1845: genflags (flag_logical, curi->size, "val", "", "");
1846: printf ("SET_CFLG (carry);\n");
1847: duplicate_carry ();
1848: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1849: break;
1.1.1.11 root 1850: case i_MOVEC2:
1.1.1.7 root 1851: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.5 root 1852: start_brace ();
1.1.1.3 root 1853: printf ("\tint regno = (src >> 12) & 15;\n");
1854: printf ("\tuae_u32 *regp = regs.regs + regno;\n");
1.1.1.9 root 1855: printf ("\tif (! m68k_movec2(src & 0xFFF, regp)) goto %s;\n", endlabelstr);
1.1 root 1856: break;
1.1.1.11 root 1857: case i_MOVE2C:
1.1.1.7 root 1858: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.5 root 1859: start_brace ();
1.1.1.3 root 1860: printf ("\tint regno = (src >> 12) & 15;\n");
1861: printf ("\tuae_u32 *regp = regs.regs + regno;\n");
1.1.1.9 root 1862: printf ("\tif (! m68k_move2c(src & 0xFFF, regp)) goto %s;\n", endlabelstr);
1.1 root 1863: break;
1.1.1.11 root 1864: case i_CAS:
1865: {
1866: int old_brace_level;
1867: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1868: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1869: start_brace ();
1870: printf ("\tint ru = (src >> 6) & 7;\n");
1871: printf ("\tint rc = src & 7;\n");
1872: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, rc)", "dst");
1873: printf ("\tif (GET_ZFLG)");
1874: old_brace_level = n_braces;
1875: start_brace ();
1876: genastore ("(m68k_dreg(regs, ru))", curi->dmode, "dstreg", curi->size, "dst");
1877: pop_braces (old_brace_level);
1878: printf ("else");
1879: start_brace ();
1880: printf ("m68k_dreg(regs, rc) = dst;\n");
1881: pop_braces (old_brace_level);
1882: }
1883: break;
1884: case i_CAS2:
1.1.1.7 root 1885: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.8 root 1886: printf ("\tuae_u32 rn1 = regs.regs[(extra >> 28) & 15];\n");
1887: printf ("\tuae_u32 rn2 = regs.regs[(extra >> 12) & 15];\n");
1.1.1.7 root 1888: if (curi->size == sz_word) {
1.1.1.5 root 1889: int old_brace_level = n_braces;
1890: printf ("\tuae_u16 dst1 = get_word(rn1), dst2 = get_word(rn2);\n");
1.1.1.7 root 1891: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, (extra >> 16) & 7)", "dst1");
1892: printf ("\tif (GET_ZFLG) {\n");
1893: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, extra & 7)", "dst2");
1894: printf ("\tif (GET_ZFLG) {\n");
1.1.1.5 root 1895: printf ("\tput_word(rn1, m68k_dreg(regs, (extra >> 22) & 7));\n");
1896: printf ("\tput_word(rn1, m68k_dreg(regs, (extra >> 6) & 7));\n");
1897: printf ("\t}}\n");
1898: pop_braces (old_brace_level);
1.1.1.7 root 1899: printf ("\tif (! GET_ZFLG) {\n");
1.1.1.5 root 1900: printf ("\tm68k_dreg(regs, (extra >> 22) & 7) = (m68k_dreg(regs, (extra >> 22) & 7) & ~0xffff) | (dst1 & 0xffff);\n");
1901: printf ("\tm68k_dreg(regs, (extra >> 6) & 7) = (m68k_dreg(regs, (extra >> 6) & 7) & ~0xffff) | (dst2 & 0xffff);\n");
1902: printf ("\t}\n");
1.1 root 1903: } else {
1.1.1.5 root 1904: int old_brace_level = n_braces;
1905: printf ("\tuae_u32 dst1 = get_long(rn1), dst2 = get_long(rn2);\n");
1.1.1.7 root 1906: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, (extra >> 16) & 7)", "dst1");
1907: printf ("\tif (GET_ZFLG) {\n");
1908: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, extra & 7)", "dst2");
1909: printf ("\tif (GET_ZFLG) {\n");
1.1.1.5 root 1910: printf ("\tput_long(rn1, m68k_dreg(regs, (extra >> 22) & 7));\n");
1911: printf ("\tput_long(rn1, m68k_dreg(regs, (extra >> 6) & 7));\n");
1912: printf ("\t}}\n");
1913: pop_braces (old_brace_level);
1.1.1.7 root 1914: printf ("\tif (! GET_ZFLG) {\n");
1.1.1.5 root 1915: printf ("\tm68k_dreg(regs, (extra >> 22) & 7) = dst1;\n");
1916: printf ("\tm68k_dreg(regs, (extra >> 6) & 7) = dst2;\n");
1917: printf ("\t}\n");
1.1 root 1918: }
1919: break;
1.1.1.11 root 1920: case i_MOVES: /* ignore DFC and SFC because we have no MMU */
1921: {
1922: int old_brace_level;
1923: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1924: printf ("\tif (extra & 0x800)\n");
1925: old_brace_level = n_braces;
1926: start_brace ();
1927: printf ("\tuae_u32 src = regs.regs[(extra >> 12) & 15];\n");
1928: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1929: genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
1930: pop_braces (old_brace_level);
1931: printf ("else");
1932: start_brace ();
1933: genamode (curi->dmode, "dstreg", curi->size, "src", 1, 0);
1934: printf ("\tif (extra & 0x8000) {\n");
1935: switch (curi->size) {
1936: case sz_byte: printf ("\tm68k_areg(regs, (extra >> 12) & 7) = (uae_s32)(uae_s8)src;\n"); break;
1937: case sz_word: printf ("\tm68k_areg(regs, (extra >> 12) & 7) = (uae_s32)(uae_s16)src;\n"); break;
1938: case sz_long: printf ("\tm68k_areg(regs, (extra >> 12) & 7) = src;\n"); break;
1939: default: abort ();
1.1 root 1940: }
1.1.1.11 root 1941: printf ("\t} else {\n");
1942: genastore ("src", Dreg, "(extra >> 12) & 7", curi->size, "");
1943: printf ("\t}\n");
1944: pop_braces (old_brace_level);
1945: }
1946: break;
1947: case i_BKPT: /* only needed for hardware emulators */
1.1.1.5 root 1948: sync_m68k_pc ();
1.1.1.3 root 1949: printf ("\top_illg(opcode);\n");
1.1 root 1950: break;
1.1.1.11 root 1951: case i_CALLM: /* not present in 68030 */
1.1.1.5 root 1952: sync_m68k_pc ();
1.1.1.3 root 1953: printf ("\top_illg(opcode);\n");
1.1 root 1954: break;
1.1.1.11 root 1955: case i_RTM: /* not present in 68030 */
1.1.1.5 root 1956: sync_m68k_pc ();
1.1.1.3 root 1957: printf ("\top_illg(opcode);\n");
1.1 root 1958: break;
1.1.1.11 root 1959: case i_TRAPcc:
1.1.1.7 root 1960: if (curi->smode != am_unknown && curi->smode != am_illg)
1961: genamode (curi->smode, "srcreg", curi->size, "dummy", 1, 0);
1962: printf ("\tif (cctrue(%d)) { Exception(7,m68k_getpc()); goto %s; }\n", curi->cc, endlabelstr);
1.1.1.5 root 1963: need_endlabel = 1;
1.1 root 1964: break;
1.1.1.11 root 1965: case i_DIVL:
1.1.1.3 root 1966: sync_m68k_pc ();
1967: start_brace ();
1968: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1969: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1970: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1.1.5 root 1971: sync_m68k_pc ();
1.1.1.3 root 1972: printf ("\tm68k_divl(opcode, dst, extra, oldpc);\n");
1.1 root 1973: break;
1.1.1.11 root 1974: case i_MULL:
1.1.1.7 root 1975: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1976: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1.1.5 root 1977: sync_m68k_pc ();
1.1.1.3 root 1978: printf ("\tm68k_mull(opcode, dst, extra);\n");
1.1 root 1979: break;
1.1.1.11 root 1980: case i_BFTST:
1981: case i_BFEXTU:
1982: case i_BFCHG:
1983: case i_BFEXTS:
1984: case i_BFCLR:
1985: case i_BFFFO:
1986: case i_BFSET:
1987: case i_BFINS:
1.1.1.7 root 1988: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1989: genamode (curi->dmode, "dstreg", sz_long, "dst", 2, 0);
1.1.1.5 root 1990: start_brace ();
1.1.1.3 root 1991: printf ("\tuae_s32 offset = extra & 0x800 ? m68k_dreg(regs, (extra >> 6) & 7) : (extra >> 6) & 0x1f;\n");
1992: printf ("\tint width = (((extra & 0x20 ? m68k_dreg(regs, extra & 7) : extra) -1) & 0x1f) +1;\n");
1.1.1.7 root 1993: if (curi->dmode == Dreg) {
1.1.1.3 root 1994: printf ("\tuae_u32 tmp = m68k_dreg(regs, dstreg) << (offset & 0x1f);\n");
1995: } else {
1996: printf ("\tuae_u32 tmp,bf0,bf1;\n");
1997: printf ("\tdsta += (offset >> 3) | (offset & 0x80000000 ? ~0x1fffffff : 0);\n");
1998: printf ("\tbf0 = get_long(dsta);bf1 = get_byte(dsta+4) & 0xff;\n");
1999: printf ("\ttmp = (bf0 << (offset & 7)) | (bf1 >> (8 - (offset & 7)));\n");
2000: }
2001: printf ("\ttmp >>= (32 - width);\n");
1.1.1.7 root 2002: printf ("\tSET_NFLG (tmp & (1 << (width-1)) ? 1 : 0);\n");
2003: printf ("\tSET_ZFLG (tmp == 0); SET_VFLG (0); SET_CFLG (0);\n");
2004: switch (curi->mnemo) {
1.1.1.11 root 2005: case i_BFTST:
1.1.1.3 root 2006: break;
1.1.1.11 root 2007: case i_BFEXTU:
1.1.1.3 root 2008: printf ("\tm68k_dreg(regs, (extra >> 12) & 7) = tmp;\n");
2009: break;
1.1.1.11 root 2010: case i_BFCHG:
1.1.1.3 root 2011: printf ("\ttmp = ~tmp;\n");
2012: break;
1.1.1.11 root 2013: case i_BFEXTS:
1.1.1.7 root 2014: printf ("\tif (GET_NFLG) tmp |= width == 32 ? 0 : (-1 << width);\n");
1.1.1.3 root 2015: printf ("\tm68k_dreg(regs, (extra >> 12) & 7) = tmp;\n");
2016: break;
1.1.1.11 root 2017: case i_BFCLR:
1.1.1.3 root 2018: printf ("\ttmp = 0;\n");
2019: break;
1.1.1.11 root 2020: case i_BFFFO:
1.1.1.3 root 2021: printf ("\t{ uae_u32 mask = 1 << (width-1);\n");
2022: printf ("\twhile (mask) { if (tmp & mask) break; mask >>= 1; offset++; }}\n");
2023: printf ("\tm68k_dreg(regs, (extra >> 12) & 7) = offset;\n");
2024: break;
1.1.1.11 root 2025: case i_BFSET:
1.1.1.3 root 2026: printf ("\ttmp = 0xffffffff;\n");
2027: break;
1.1.1.11 root 2028: case i_BFINS:
1.1.1.3 root 2029: printf ("\ttmp = m68k_dreg(regs, (extra >> 12) & 7);\n");
2030: break;
1.1.1.11 root 2031: default:
1.1.1.3 root 2032: break;
1.1 root 2033: }
1.1.1.7 root 2034: if (curi->mnemo == i_BFCHG
2035: || curi->mnemo == i_BFCLR
2036: || curi->mnemo == i_BFSET
2037: || curi->mnemo == i_BFINS)
1.1.1.11 root 2038: {
2039: printf ("\ttmp <<= (32 - width);\n");
2040: if (curi->dmode == Dreg) {
2041: printf ("\tm68k_dreg(regs, dstreg) = (m68k_dreg(regs, dstreg) & ((offset & 0x1f) == 0 ? 0 :\n");
2042: printf ("\t\t(0xffffffff << (32 - (offset & 0x1f))))) |\n");
2043: printf ("\t\t(tmp >> (offset & 0x1f)) |\n");
2044: printf ("\t\t(((offset & 0x1f) + width) >= 32 ? 0 :\n");
2045: printf (" (m68k_dreg(regs, dstreg) & ((uae_u32)0xffffffff >> ((offset & 0x1f) + width))));\n");
2046: } else {
2047: printf ("\tbf0 = (bf0 & (0xff000000 << (8 - (offset & 7)))) |\n");
2048: printf ("\t\t(tmp >> (offset & 7)) |\n");
2049: printf ("\t\t(((offset & 7) + width) >= 32 ? 0 :\n");
2050: printf ("\t\t (bf0 & ((uae_u32)0xffffffff >> ((offset & 7) + width))));\n");
2051: printf ("\tput_long(dsta,bf0 );\n");
2052: printf ("\tif (((offset & 7) + width) > 32) {\n");
2053: printf ("\t\tbf1 = (bf1 & (0xff >> (width - 32 + (offset & 7)))) |\n");
2054: printf ("\t\t\t(tmp << (8 - (offset & 7)));\n");
2055: printf ("\t\tput_byte(dsta+4,bf1);\n");
2056: printf ("\t}\n");
2057: }
1.1.1.5 root 2058: }
1.1 root 2059: break;
1.1.1.11 root 2060: case i_PACK:
1.1.1.7 root 2061: if (curi->smode == Dreg) {
1.1.1.5 root 2062: printf ("\tuae_u16 val = m68k_dreg(regs, srcreg) + %s;\n", gen_nextiword ());
1.1.1.3 root 2063: printf ("\tm68k_dreg(regs, dstreg) = (m68k_dreg(regs, dstreg) & 0xffffff00) | ((val >> 4) & 0xf0) | (val & 0xf);\n");
2064: } else {
2065: printf ("\tuae_u16 val;\n");
2066: printf ("\tm68k_areg(regs, srcreg) -= areg_byteinc[srcreg];\n");
2067: printf ("\tval = (uae_u16)get_byte(m68k_areg(regs, srcreg));\n");
2068: printf ("\tm68k_areg(regs, srcreg) -= areg_byteinc[srcreg];\n");
1.1.1.5 root 2069: printf ("\tval = (val | ((uae_u16)get_byte(m68k_areg(regs, srcreg)) << 8)) + %s;\n", gen_nextiword ());
1.1.1.3 root 2070: printf ("\tm68k_areg(regs, dstreg) -= areg_byteinc[dstreg];\n");
2071: printf ("\tput_byte(m68k_areg(regs, dstreg),((val >> 4) & 0xf0) | (val & 0xf));\n");
1.1 root 2072: }
2073: break;
1.1.1.11 root 2074: case i_UNPK:
1.1.1.7 root 2075: if (curi->smode == Dreg) {
1.1.1.3 root 2076: printf ("\tuae_u16 val = m68k_dreg(regs, srcreg);\n");
1.1.1.5 root 2077: printf ("\tval = (((val << 4) & 0xf00) | (val & 0xf)) + %s;\n", gen_nextiword ());
1.1.1.3 root 2078: printf ("\tm68k_dreg(regs, dstreg) = (m68k_dreg(regs, dstreg) & 0xffff0000) | (val & 0xffff);\n");
2079: } else {
2080: printf ("\tuae_u16 val;\n");
2081: printf ("\tm68k_areg(regs, srcreg) -= areg_byteinc[srcreg];\n");
2082: printf ("\tval = (uae_u16)get_byte(m68k_areg(regs, srcreg));\n");
1.1.1.5 root 2083: printf ("\tval = (((val << 4) & 0xf00) | (val & 0xf)) + %s;\n", gen_nextiword ());
1.1.1.3 root 2084: printf ("\tm68k_areg(regs, dstreg) -= areg_byteinc[dstreg];\n");
2085: printf ("\tput_byte(m68k_areg(regs, dstreg),val);\n");
2086: printf ("\tm68k_areg(regs, dstreg) -= areg_byteinc[dstreg];\n");
2087: printf ("\tput_byte(m68k_areg(regs, dstreg),val >> 8);\n");
1.1 root 2088: }
2089: break;
1.1.1.11 root 2090: case i_TAS:
1.1.1.7 root 2091: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
2092: genflags (flag_logical, curi->size, "src", "", "");
1.1.1.3 root 2093: printf ("\tsrc |= 0x80;\n");
1.1.1.7 root 2094: genastore ("src", curi->smode, "srcreg", curi->size, "src");
1.1 root 2095: break;
1.1.1.11 root 2096: case i_FPP:
1.1.1.7 root 2097: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.5 root 2098: sync_m68k_pc ();
1.1.1.3 root 2099: printf ("\tfpp_opp(opcode,extra);\n");
1.1 root 2100: break;
1.1.1.11 root 2101: case i_FDBcc:
1.1.1.7 root 2102: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.5 root 2103: sync_m68k_pc ();
1.1.1.3 root 2104: printf ("\tfdbcc_opp(opcode,extra);\n");
1.1 root 2105: break;
1.1.1.11 root 2106: case i_FScc:
1.1.1.7 root 2107: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.5 root 2108: sync_m68k_pc ();
1.1.1.3 root 2109: printf ("\tfscc_opp(opcode,extra);\n");
1.1 root 2110: break;
1.1.1.11 root 2111: case i_FTRAPcc:
1.1.1.5 root 2112: sync_m68k_pc ();
2113: start_brace ();
1.1.1.3 root 2114: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 2115: if (curi->smode != am_unknown && curi->smode != am_illg)
2116: genamode (curi->smode, "srcreg", curi->size, "dummy", 1, 0);
1.1.1.5 root 2117: sync_m68k_pc ();
1.1.1.3 root 2118: printf ("\tftrapcc_opp(opcode,oldpc);\n");
1.1 root 2119: break;
1.1.1.11 root 2120: case i_FBcc:
1.1.1.5 root 2121: sync_m68k_pc ();
2122: start_brace ();
1.1.1.3 root 2123: printf ("\tuaecptr pc = m68k_getpc();\n");
1.1.1.7 root 2124: genamode (curi->dmode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.5 root 2125: sync_m68k_pc ();
1.1.1.3 root 2126: printf ("\tfbcc_opp(opcode,pc,extra);\n");
1.1 root 2127: break;
1.1.1.11 root 2128: case i_FSAVE:
1.1.1.5 root 2129: sync_m68k_pc ();
1.1.1.3 root 2130: printf ("\tfsave_opp(opcode);\n");
1.1 root 2131: break;
1.1.1.11 root 2132: case i_FRESTORE:
1.1.1.5 root 2133: sync_m68k_pc ();
1.1.1.3 root 2134: printf ("\tfrestore_opp(opcode);\n");
1.1 root 2135: break;
1.1.1.12! root 2136:
! 2137: case i_CINVL:
! 2138: case i_CINVP:
! 2139: case i_CINVA:
! 2140: case i_CPUSHL:
! 2141: case i_CPUSHP:
! 2142: case i_CPUSHA:
! 2143: break;
! 2144: case i_MOVE16:
! 2145: printf ("\tuaecptr mems = m68k_areg(regs, srcreg) & ~15, memd;\n");
! 2146: printf ("\tdstreg = (%s >> 12) & 7;\n", gen_nextiword());
! 2147: printf ("\tmemd = m68k_areg(regs, dstreg) & ~15;\n");
! 2148: printf ("\tput_long(memd, get_long(mems));\n");
! 2149: printf ("\tput_long(memd+4, get_long(mems+4));\n");
! 2150: printf ("\tput_long(memd+8, get_long(mems+8));\n");
! 2151: printf ("\tput_long(memd+12, get_long(mems+12));\n");
! 2152: printf ("\tm68k_areg(regs, srcreg) += 16;\n");
! 2153: printf ("\tm68k_areg(regs, dstreg) += 16;\n");
! 2154: break;
! 2155:
1.1.1.11 root 2156: case i_MMUOP:
1.1.1.7 root 2157: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.5 root 2158: sync_m68k_pc ();
1.1.1.3 root 2159: printf ("\tmmu_op(opcode,extra);\n");
1.1 root 2160: break;
1.1.1.11 root 2161: default:
1.1.1.5 root 2162: abort ();
1.1 root 2163: break;
1.1.1.5 root 2164: }
1.1 root 2165: finish_braces ();
1.1.1.3 root 2166: sync_m68k_pc ();
1.1 root 2167: }
2168:
1.1.1.5 root 2169: static void generate_includes (FILE * f)
1.1.1.3 root 2170: {
2171: fprintf (f, "#include \"sysconfig.h\"\n");
2172: fprintf (f, "#include \"sysdeps.h\"\n");
2173: fprintf (f, "#include \"config.h\"\n");
2174: fprintf (f, "#include \"options.h\"\n");
2175: fprintf (f, "#include \"memory.h\"\n");
2176: fprintf (f, "#include \"custom.h\"\n");
2177: fprintf (f, "#include \"newcpu.h\"\n");
2178: fprintf (f, "#include \"compiler.h\"\n");
2179: fprintf (f, "#include \"cputbl.h\"\n");
1.1.1.12! root 2180:
! 2181: fprintf (f, "#define CPUFUNC(x) x##_ff\n"
! 2182: "#ifdef NOFLAGS\n"
! 2183: "#include \"noflags.h\"\n"
! 2184: "#endif\n");
1.1.1.3 root 2185: }
2186:
2187: static int postfix;
2188:
2189: static void generate_one_opcode (int rp)
1.1 root 2190: {
2191: int i;
1.1.1.3 root 2192: uae_u16 smsk, dmsk;
2193: long int opcode = opcode_map[rp];
1.1 root 2194:
1.1.1.3 root 2195: if (table68k[opcode].mnemo == i_ILLG
2196: || table68k[opcode].clev > cpu_level)
2197: return;
1.1 root 2198:
1.1.1.5 root 2199: for (i = 0; lookuptab[i].name[0]; i++) {
1.1.1.3 root 2200: if (table68k[opcode].mnemo == lookuptab[i].mnemo)
2201: break;
2202: }
1.1 root 2203:
1.1.1.3 root 2204: if (table68k[opcode].handler != -1)
2205: return;
1.1 root 2206:
1.1.1.3 root 2207: if (opcode_next_clev[rp] != cpu_level) {
1.1.1.12! root 2208: fprintf (stblfile, "{ CPUFUNC(op_%lx_%d), 0, %ld }, /* %s */\n", opcode, opcode_last_postfix[rp],
1.1.1.3 root 2209: opcode, lookuptab[i].name);
2210: return;
2211: }
1.1.1.12! root 2212: fprintf (stblfile, "{ CPUFUNC(op_%lx_%d), 0, %ld }, /* %s */\n", opcode, postfix, opcode, lookuptab[i].name);
! 2213: fprintf (headerfile, "extern cpuop_func op_%lx_%d_nf;\n", opcode, postfix);
! 2214: fprintf (headerfile, "extern cpuop_func op_%lx_%d_ff;\n", opcode, postfix);
! 2215: printf ("unsigned long REGPARAM2 CPUFUNC(op_%lx_%d)(uae_u32 opcode) /* %s */\n{\n", opcode, postfix, lookuptab[i].name);
1.1.1.3 root 2216:
2217: switch (table68k[opcode].stype) {
2218: case 0: smsk = 7; break;
2219: case 1: smsk = 255; break;
2220: case 2: smsk = 15; break;
2221: case 3: smsk = 7; break;
2222: case 4: smsk = 7; break;
2223: case 5: smsk = 63; break;
1.1.1.5 root 2224: default: abort ();
1.1.1.3 root 2225: }
2226: dmsk = 7;
2227:
2228: next_cpu_level = -1;
2229: if (table68k[opcode].suse
1.1.1.5 root 2230: && table68k[opcode].smode != imm && table68k[opcode].smode != imm0
1.1.1.3 root 2231: && table68k[opcode].smode != imm1 && table68k[opcode].smode != imm2
2232: && table68k[opcode].smode != absw && table68k[opcode].smode != absl
2233: && table68k[opcode].smode != PC8r && table68k[opcode].smode != PC16)
2234: {
2235: if (table68k[opcode].spos == -1) {
1.1.1.5 root 2236: if (((int) table68k[opcode].sreg) >= 128)
2237: printf ("\tuae_u32 srcreg = (uae_s32)(uae_s8)%d;\n", (int) table68k[opcode].sreg);
1.1.1.3 root 2238: else
1.1.1.5 root 2239: printf ("\tuae_u32 srcreg = %d;\n", (int) table68k[opcode].sreg);
1.1.1.3 root 2240: } else {
2241: char source[100];
1.1.1.6 root 2242: int pos = table68k[opcode].spos;
1.1.1.5 root 2243:
1.1.1.6 root 2244: if (pos)
2245: sprintf (source, "((opcode >> %d) & %d)", pos, smsk);
1.1.1.3 root 2246: else
1.1.1.5 root 2247: sprintf (source, "(opcode & %d)", smsk);
2248:
1.1.1.3 root 2249: if (table68k[opcode].stype == 3)
2250: printf ("\tuae_u32 srcreg = imm8_table[%s];\n", source);
2251: else if (table68k[opcode].stype == 1)
2252: printf ("\tuae_u32 srcreg = (uae_s32)(uae_s8)%s;\n", source);
2253: else
2254: printf ("\tuae_u32 srcreg = %s;\n", source);
1.1 root 2255: }
1.1.1.3 root 2256: }
2257: if (table68k[opcode].duse
2258: /* Yes, the dmode can be imm, in case of LINK or DBcc */
1.1.1.5 root 2259: && table68k[opcode].dmode != imm && table68k[opcode].dmode != imm0
1.1.1.3 root 2260: && table68k[opcode].dmode != imm1 && table68k[opcode].dmode != imm2
1.1.1.5 root 2261: && table68k[opcode].dmode != absw && table68k[opcode].dmode != absl)
2262: {
1.1.1.3 root 2263: if (table68k[opcode].dpos == -1) {
1.1.1.5 root 2264: if (((int) table68k[opcode].dreg) >= 128)
2265: printf ("\tuae_u32 dstreg = (uae_s32)(uae_s8)%d;\n", (int) table68k[opcode].dreg);
1.1.1.3 root 2266: else
1.1.1.5 root 2267: printf ("\tuae_u32 dstreg = %d;\n", (int) table68k[opcode].dreg);
1.1.1.3 root 2268: } else {
1.1.1.5 root 2269: int pos = table68k[opcode].dpos;
1.1.1.6 root 2270: #if 0
1.1.1.5 root 2271: /* Check that we can do the little endian optimization safely. */
1.1.1.6 root 2272: if (pos < 8 && (dmsk >> (8 - pos)) != 0)
1.1.1.5 root 2273: abort ();
1.1.1.6 root 2274: #endif
1.1.1.5 root 2275: if (pos)
1.1.1.3 root 2276: printf ("\tuae_u32 dstreg = (opcode >> %d) & %d;\n",
1.1.1.5 root 2277: pos, dmsk);
1.1.1.3 root 2278: else
2279: printf ("\tuae_u32 dstreg = opcode & %d;\n", dmsk);
1.1 root 2280: }
2281: }
1.1.1.5 root 2282: need_endlabel = 0;
1.1.1.3 root 2283: endlabelno++;
2284: sprintf (endlabelstr, "endlabel%d", endlabelno);
2285: gen_opcode (opcode);
1.1.1.5 root 2286: if (need_endlabel)
1.1.1.6 root 2287: printf ("%s: ;\n", endlabelstr);
1.1.1.11 root 2288: printf ("return %d;\n", insn_n_cycles / 2);
1.1.1.3 root 2289: printf ("}\n");
2290: opcode_next_clev[rp] = next_cpu_level;
2291: opcode_last_postfix[rp] = postfix;
1.1 root 2292: }
2293:
1.1.1.3 root 2294: static void generate_func (void)
1.1 root 2295: {
1.1.1.5 root 2296: int i, j, rp;
1.1 root 2297:
1.1.1.3 root 2298: using_prefetch = 0;
2299: using_exception_3 = 0;
1.1.1.12! root 2300: for (i = 0; i < 6; i++) {
! 2301: cpu_level = 4 - i;
! 2302: if (i == 5) {
1.1.1.3 root 2303: cpu_level = 0;
2304: using_prefetch = 1;
2305: using_exception_3 = 1;
2306: for (rp = 0; rp < nr_cpuop_funcs; rp++)
2307: opcode_next_clev[rp] = 0;
2308: }
1.1.1.12! root 2309:
1.1.1.3 root 2310: postfix = i;
1.1.1.12! root 2311: fprintf (stblfile, "struct cputbl CPUFUNC(op_smalltbl_%d)[] = {\n", postfix);
1.1.1.3 root 2312:
1.1.1.5 root 2313: /* sam: this is for people with low memory (eg. me :)) */
2314: printf ("\n"
2315: "#if !defined(PART_1) && !defined(PART_2) && "
2316: "!defined(PART_3) && !defined(PART_4) && "
2317: "!defined(PART_5) && !defined(PART_6) && "
2318: "!defined(PART_7) && !defined(PART_8)"
2319: "\n"
2320: "#define PART_1 1\n"
2321: "#define PART_2 1\n"
2322: "#define PART_3 1\n"
2323: "#define PART_4 1\n"
2324: "#define PART_5 1\n"
2325: "#define PART_6 1\n"
2326: "#define PART_7 1\n"
2327: "#define PART_8 1\n"
2328: "#endif\n\n");
2329:
2330: rp = 0;
2331: for(j=1;j<=8;++j) {
2332: int k = (j*nr_cpuop_funcs)/8;
2333: printf ("#ifdef PART_%d\n",j);
2334: for (; rp < k; rp++)
2335: generate_one_opcode (rp);
2336: printf ("#endif\n\n");
2337: }
2338:
1.1.1.3 root 2339: fprintf (stblfile, "{ 0, 0, 0 }};\n");
1.1 root 2340: }
2341:
2342: }
2343:
1.1.1.3 root 2344: int main (int argc, char **argv)
1.1.1.5 root 2345: {
1.1 root 2346: read_table68k ();
2347: do_merges ();
1.1.1.3 root 2348:
1.1.1.5 root 2349: opcode_map = (int *) xmalloc (sizeof (int) * nr_cpuop_funcs);
2350: opcode_last_postfix = (int *) xmalloc (sizeof (int) * nr_cpuop_funcs);
2351: opcode_next_clev = (int *) xmalloc (sizeof (int) * nr_cpuop_funcs);
2352: counts = (unsigned long *) xmalloc (65536 * sizeof (unsigned long));
2353: read_counts ();
1.1.1.3 root 2354:
2355: /* It would be a lot nicer to put all in one file (we'd also get rid of
2356: * cputbl.h that way), but cpuopti can't cope. That could be fixed, but
2357: * I don't dare to touch the 68k version. */
1.1.1.5 root 2358:
1.1.1.3 root 2359: headerfile = fopen ("cputbl.h", "wb");
2360: stblfile = fopen ("cpustbl.c", "wb");
2361: freopen ("cpuemu.c", "wb", stdout);
2362:
2363: generate_includes (stdout);
2364: generate_includes (stblfile);
2365:
2366: generate_func ();
2367:
2368: free (table68k);
1.1 root 2369: return 0;
2370: }
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