![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to gencpu.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [UNIX Amiga Emulator] / uae / src|
Return to gencpu.c CVS log | Up to [UNIX Amiga Emulator] / uae / src |
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) {
1.1.1.3 root 65: opcode_next_clev[nr] = 3;
66: opcode_last_postfix[nr] = -1;
67: opcode_map[nr++] = opcode;
68: counts[opcode] = count;
69: }
70: fclose (file);
71: }
72: if (nr == nr_cpuop_funcs)
73: return;
74: for (opcode = 0; opcode < 0x10000; opcode++) {
75: if (table68k[opcode].handler == -1 && table68k[opcode].mnemo != i_ILLG
76: && counts[opcode] == 0)
1.1 root 77: {
1.1.1.3 root 78: opcode_next_clev[nr] = 3;
79: opcode_last_postfix[nr] = -1;
80: opcode_map[nr++] = opcode;
81: counts[opcode] = count;
1.1 root 82: }
83: }
1.1.1.3 root 84: if (nr != nr_cpuop_funcs)
85: abort ();
1.1 root 86: }
87:
1.1.1.3 root 88: static char endlabelstr[80];
89: static int endlabelno = 0;
1.1.1.5 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 root 572: typedef enum {
1.1.1.7 root 573: flag_logical_noclobber, flag_logical, flag_add, flag_sub, flag_cmp, flag_addx, flag_subx, flag_zn,
1.1 root 574: flag_av, flag_sv
575: } flagtypes;
576:
1.1.1.5 root 577: static void genflags_normal (flagtypes type, wordsizes size, char *value, char *src, char *dst)
1.1 root 578: {
1.1.1.5 root 579: char vstr[100], sstr[100], dstr[100];
580: char usstr[100], udstr[100];
581: char unsstr[100], undstr[100];
1.1 root 582:
1.1.1.5 root 583: switch (size) {
1.1 root 584: case sz_byte:
1.1.1.5 root 585: strcpy (vstr, "((uae_s8)(");
586: strcpy (usstr, "((uae_u8)(");
1.1 root 587: break;
588: case sz_word:
1.1.1.5 root 589: strcpy (vstr, "((uae_s16)(");
590: strcpy (usstr, "((uae_u16)(");
1.1 root 591: break;
592: case sz_long:
1.1.1.5 root 593: strcpy (vstr, "((uae_s32)(");
594: strcpy (usstr, "((uae_u32)(");
1.1 root 595: break;
596: default:
1.1.1.5 root 597: abort ();
1.1 root 598: }
1.1.1.5 root 599: strcpy (unsstr, usstr);
1.1 root 600:
1.1.1.5 root 601: strcpy (sstr, vstr);
602: strcpy (dstr, vstr);
603: strcat (vstr, value);
604: strcat (vstr, "))");
605: strcat (dstr, dst);
606: strcat (dstr, "))");
607: strcat (sstr, src);
608: strcat (sstr, "))");
609:
610: strcpy (udstr, usstr);
611: strcat (udstr, dst);
612: strcat (udstr, "))");
613: strcat (usstr, src);
614: strcat (usstr, "))");
615:
616: strcpy (undstr, unsstr);
617: strcat (unsstr, "-");
618: strcat (undstr, "~");
619: strcat (undstr, dst);
620: strcat (undstr, "))");
621: strcat (unsstr, src);
622: strcat (unsstr, "))");
1.1 root 623:
624: switch (type) {
1.1.1.7 root 625: case flag_logical_noclobber:
1.1 root 626: case flag_logical:
627: case flag_zn:
628: case flag_av:
629: case flag_sv:
630: case flag_addx:
631: case flag_subx:
632: break;
1.1.1.3 root 633:
1.1 root 634: case flag_add:
1.1.1.5 root 635: start_brace ();
1.1.1.3 root 636: printf ("uae_u32 %s = %s + %s;\n", value, dstr, sstr);
1.1 root 637: break;
638: case flag_sub:
639: case flag_cmp:
1.1.1.5 root 640: start_brace ();
1.1.1.3 root 641: printf ("uae_u32 %s = %s - %s;\n", value, dstr, sstr);
1.1 root 642: break;
643: }
644:
645: switch (type) {
1.1.1.7 root 646: case flag_logical_noclobber:
1.1 root 647: case flag_logical:
648: case flag_zn:
649: break;
1.1.1.3 root 650:
1.1 root 651: case flag_add:
652: case flag_sub:
653: case flag_addx:
654: case flag_subx:
655: case flag_cmp:
656: case flag_av:
657: case flag_sv:
1.1.1.5 root 658: start_brace ();
659: printf ("\t" BOOL_TYPE " flgs = %s < 0;\n", sstr);
660: printf ("\t" BOOL_TYPE " flgo = %s < 0;\n", dstr);
661: printf ("\t" BOOL_TYPE " flgn = %s < 0;\n", vstr);
1.1 root 662: break;
663: }
1.1.1.3 root 664:
1.1.1.5 root 665: switch (type) {
1.1 root 666: case flag_logical:
1.1.1.7 root 667: printf ("\tCLEAR_CZNV;\n");
668: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
669: printf ("\tSET_NFLG (%s < 0);\n", vstr);
670: break;
671: case flag_logical_noclobber:
672: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
673: printf ("\tSET_NFLG (%s < 0);\n", vstr);
1.1 root 674: break;
675: case flag_av:
1.1.1.7 root 676: printf ("\tSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n");
1.1 root 677: break;
678: case flag_sv:
1.1.1.7 root 679: printf ("\tSET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));\n");
1.1 root 680: break;
681: case flag_zn:
1.1.1.7 root 682: printf ("\tSET_ZFLG (GET_ZFLG & (%s == 0));\n", vstr);
683: printf ("\tSET_NFLG (%s < 0);\n", vstr);
1.1 root 684: break;
685: case flag_add:
1.1.1.7 root 686: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
1.1.1.8 root 687: printf ("\tSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n");
1.1.1.7 root 688: printf ("\tSET_CFLG (%s < %s);\n", undstr, usstr);
689: duplicate_carry ();
690: printf ("\tSET_NFLG (flgn != 0);\n");
1.1 root 691: break;
692: case flag_sub:
1.1.1.7 root 693: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
694: printf ("\tSET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));\n");
695: printf ("\tSET_CFLG (%s > %s);\n", usstr, udstr);
1.1.1.8 root 696: duplicate_carry ();
1.1.1.7 root 697: printf ("\tSET_NFLG (flgn != 0);\n");
1.1 root 698: break;
699: case flag_addx:
1.1.1.7 root 700: printf ("\tSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n"); /* minterm SON: 0x42 */
701: printf ("\tSET_CFLG (flgs ^ ((flgs ^ flgo) & (flgo ^ flgn)));\n"); /* minterm SON: 0xD4 */
702: duplicate_carry ();
1.1 root 703: break;
704: case flag_subx:
1.1.1.7 root 705: printf ("\tSET_VFLG ((flgs ^ flgo) & (flgo ^ flgn));\n"); /* minterm SON: 0x24 */
706: printf ("\tSET_CFLG (flgs ^ ((flgs ^ flgn) & (flgo ^ flgn)));\n"); /* minterm SON: 0xB2 */
707: duplicate_carry ();
1.1 root 708: break;
709: case flag_cmp:
1.1.1.7 root 710: printf ("\tSET_ZFLG (%s == 0);\n", vstr);
711: printf ("\tSET_VFLG ((flgs != flgo) && (flgn != flgo));\n");
712: printf ("\tSET_CFLG (%s > %s);\n", usstr, udstr);
713: printf ("\tSET_NFLG (flgn != 0);\n");
1.1 root 714: break;
715: }
716: }
717:
1.1.1.5 root 718: static void genflags (flagtypes type, wordsizes size, char *value, char *src, char *dst)
1.1 root 719: {
1.1.1.11! root 720: /* Temporarily deleted 68k/ARM flag optimizations. I'd prefer to have
! 721: them in the appropriate m68k.h files and use just one copy of this
! 722: code here. The API can be changed if necessary. */
! 723: #ifdef OPTIMIZED_FLAGS
1.1 root 724: switch (type) {
1.1.1.5 root 725: case flag_add:
726: case flag_sub:
727: start_brace ();
1.1.1.3 root 728: printf ("\tuae_u32 %s;\n", value);
1.1 root 729: break;
730:
1.1.1.3 root 731: default:
1.1 root 732: break;
733: }
734:
1.1.1.3 root 735: /* At least some of those casts are fairly important! */
1.1.1.5 root 736: switch (type) {
1.1.1.7 root 737: case flag_logical_noclobber:
1.1.1.11! root 738: printf ("\t{uae_u32 oldcznv = GET_CZNV & ~(FLAGVAL_Z | FLAGVAL_N);\n");
1.1.1.7 root 739: if (strcmp (value, "0") == 0) {
1.1.1.11! root 740: printf ("\tSET_CZNV (olcznv | FLAGVAL_Z);\n");
1.1.1.7 root 741: } else {
742: switch (size) {
1.1.1.11! root 743: case sz_byte: printf ("\toptflag_testb ((uae_s8)(%s));\n", value); break;
! 744: case sz_word: printf ("\toptflag_testw ((uae_s16)(%s));\n", value); break;
! 745: case sz_long: printf ("\toptflag_testl ((uae_s32)(%s));\n", value); break;
1.1.1.7 root 746: }
1.1.1.11! root 747: printf ("\tIOR_CZNV (oldcznv);\n");
1.1.1.7 root 748: }
749: printf ("\t}\n");
750: return;
1.1 root 751: case flag_logical:
1.1.1.5 root 752: if (strcmp (value, "0") == 0) {
1.1.1.11! root 753: printf ("\tSET_CZNV (FLAGVAL_Z);\n");
1.1 root 754: } else {
1.1.1.5 root 755: switch (size) {
1.1.1.11! root 756: case sz_byte: printf ("\toptflag_testb ((uae_s8)(%s));\n", value); break;
! 757: case sz_word: printf ("\toptflag_testw ((uae_s16)(%s));\n", value); break;
! 758: case sz_long: printf ("\toptflag_testl ((uae_s32)(%s));\n", value); break;
1.1 root 759: }
760: }
761: return;
762:
763: case flag_add:
1.1.1.5 root 764: switch (size) {
1.1.1.11! root 765: case sz_byte: printf ("\toptflag_addb (%s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break;
! 766: case sz_word: printf ("\toptflag_addw (%s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break;
! 767: case sz_long: printf ("\toptflag_addl (%s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break;
1.1 root 768: }
769: return;
770:
771: case flag_sub:
1.1.1.5 root 772: switch (size) {
1.1.1.11! root 773: case sz_byte: printf ("\toptflag_subb (%s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break;
! 774: case sz_word: printf ("\toptflag_subw (%s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break;
! 775: case sz_long: printf ("\toptflag_subl (%s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break;
1.1 root 776: }
777: return;
778:
779: case flag_cmp:
1.1.1.5 root 780: switch (size) {
1.1.1.11! root 781: case sz_byte: printf ("\toptflag_cmpb ((uae_s8)(%s), (uae_s8)(%s));\n", src, dst); break;
! 782: case sz_word: printf ("\toptflag_cmpw ((uae_s16)(%s), (uae_s16)(%s));\n", src, dst); break;
! 783: case sz_long: printf ("\toptflag_cmpl ((uae_s32)(%s), (uae_s32)(%s));\n", src, dst); break;
1.1 root 784: }
785: return;
1.1.1.5 root 786:
1.1.1.3 root 787: default:
788: break;
1.1 root 789: }
790: #endif
1.1.1.11! root 791:
1.1.1.5 root 792: genflags_normal (type, size, value, src, dst);
1.1 root 793: }
1.1.1.3 root 794:
1.1.1.7 root 795: static void force_range_for_rox (const char *var, wordsizes size)
796: {
797: /* Could do a modulo operation here... which one is faster? */
798: switch (size) {
799: case sz_long:
800: printf ("\tif (%s >= 33) %s -= 33;\n", var, var);
801: break;
802: case sz_word:
803: printf ("\tif (%s >= 34) %s -= 34;\n", var, var);
804: printf ("\tif (%s >= 17) %s -= 17;\n", var, var);
805: break;
806: case sz_byte:
807: printf ("\tif (%s >= 36) %s -= 36;\n", var, var);
808: printf ("\tif (%s >= 18) %s -= 18;\n", var, var);
809: printf ("\tif (%s >= 9) %s -= 9;\n", var, var);
810: break;
811: }
812: }
813:
814: static const char *cmask (wordsizes size)
815: {
816: switch (size) {
817: case sz_byte: return "0x80";
818: case sz_word: return "0x8000";
819: case sz_long: return "0x80000000";
820: default: abort ();
821: }
822: }
823:
824: static int source_is_imm1_8 (struct instr *i)
825: {
826: return i->stype == 3;
827: }
828:
1.1.1.5 root 829: static void gen_opcode (unsigned long int opcode)
1.1 root 830: {
1.1.1.7 root 831: struct instr *curi = table68k + opcode;
1.1.1.11! root 832: insn_n_cycles = 4;
1.1.1.5 root 833:
1.1 root 834: start_brace ();
1.1.1.3 root 835: #if 0
836: printf ("uae_u8 *m68k_pc = regs.pc_p;\n");
837: #endif
838: m68k_pc_offset = 2;
1.1.1.7 root 839: switch (curi->plev) {
1.1.1.11! root 840: case 0: /* not privileged */
1.1 root 841: break;
1.1.1.11! root 842: case 1: /* unprivileged only on 68000 */
1.1.1.3 root 843: if (cpu_level == 0)
1.1 root 844: break;
1.1.1.3 root 845: if (next_cpu_level < 0)
846: next_cpu_level = 0;
847:
1.1.1.5 root 848: /* fall through */
1.1.1.11! root 849: case 2: /* priviledged */
1.1.1.3 root 850: printf ("if (!regs.s) { Exception(8,0); goto %s; }\n", endlabelstr);
1.1.1.5 root 851: need_endlabel = 1;
852: start_brace ();
1.1 root 853: break;
1.1.1.11! root 854: case 3: /* privileged if size == word */
1.1.1.7 root 855: if (curi->size == sz_byte)
1.1 root 856: break;
1.1.1.3 root 857: printf ("if (!regs.s) { Exception(8,0); goto %s; }\n", endlabelstr);
1.1.1.5 root 858: need_endlabel = 1;
859: start_brace ();
1.1 root 860: break;
861: }
1.1.1.7 root 862: switch (curi->mnemo) {
1.1.1.11! root 863: case i_OR:
! 864: case i_AND:
! 865: case i_EOR:
1.1.1.7 root 866: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
867: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
868: printf ("\tsrc %c= dst;\n", curi->mnemo == i_OR ? '|' : curi->mnemo == i_AND ? '&' : '^');
869: genflags (flag_logical, curi->size, "src", "", "");
870: genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 871: break;
1.1.1.11! root 872: case i_ORSR:
! 873: case i_EORSR:
1.1.1.3 root 874: printf ("\tMakeSR();\n");
1.1.1.7 root 875: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
876: if (curi->size == sz_byte) {
1.1.1.3 root 877: printf ("\tsrc &= 0xFF;\n");
1.1 root 878: }
1.1.1.7 root 879: printf ("\tregs.sr %c= src;\n", curi->mnemo == i_EORSR ? '^' : '|');
1.1.1.3 root 880: printf ("\tMakeFromSR();\n");
1.1 root 881: break;
1.1.1.11! root 882: case i_ANDSR:
1.1.1.3 root 883: printf ("\tMakeSR();\n");
1.1.1.7 root 884: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
885: if (curi->size == sz_byte) {
1.1.1.3 root 886: printf ("\tsrc |= 0xFF00;\n");
1.1 root 887: }
1.1.1.3 root 888: printf ("\tregs.sr &= src;\n");
889: printf ("\tMakeFromSR();\n");
1.1 root 890: break;
1.1.1.11! root 891: case i_SUB:
1.1.1.7 root 892: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
893: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 894: start_brace ();
1.1.1.7 root 895: genflags (flag_sub, curi->size, "newv", "src", "dst");
896: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 897: break;
1.1.1.11! root 898: case i_SUBA:
1.1.1.7 root 899: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
900: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1 root 901: start_brace ();
1.1.1.3 root 902: printf ("\tuae_u32 newv = dst - src;\n");
1.1.1.7 root 903: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1 root 904: break;
1.1.1.11! root 905: case i_SUBX:
1.1.1.7 root 906: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
907: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 908: start_brace ();
1.1.1.7 root 909: printf ("\tuae_u32 newv = dst - src - (GET_XFLG ? 1 : 0);\n");
910: genflags (flag_subx, curi->size, "newv", "src", "dst");
911: genflags (flag_zn, curi->size, "newv", "", "");
912: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 913: break;
1.1.1.11! root 914: case i_SBCD:
1.1 root 915: /* Let's hope this works... */
1.1.1.7 root 916: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
917: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 918: start_brace ();
1.1.1.7 root 919: printf ("\tuae_u16 newv_lo = (dst & 0xF) - (src & 0xF) - (GET_XFLG ? 1 : 0);\n");
1.1.1.3 root 920: printf ("\tuae_u16 newv_hi = (dst & 0xF0) - (src & 0xF0);\n");
921: printf ("\tuae_u16 newv;\n");
1.1.1.7 root 922: printf ("\tint cflg;\n");
1.1.1.3 root 923: printf ("\tif (newv_lo > 9) { newv_lo-=6; newv_hi-=0x10; }\n");
924: printf ("\tnewv = newv_hi + (newv_lo & 0xF);");
1.1.1.7 root 925: printf ("\tSET_CFLG (cflg = (newv_hi & 0x1F0) > 0x90);\n");
926: duplicate_carry ();
927: printf ("\tif (cflg) newv -= 0x60;\n");
928: genflags (flag_zn, curi->size, "newv", "", "");
929: genflags (flag_sv, curi->size, "newv", "src", "dst");
930: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 931: break;
1.1.1.11! root 932: case i_ADD:
1.1.1.7 root 933: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
934: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 935: start_brace ();
1.1.1.7 root 936: genflags (flag_add, curi->size, "newv", "src", "dst");
937: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 938: break;
1.1.1.11! root 939: case i_ADDA:
1.1.1.7 root 940: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
941: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1 root 942: start_brace ();
1.1.1.3 root 943: printf ("\tuae_u32 newv = dst + src;\n");
1.1.1.7 root 944: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1 root 945: break;
1.1.1.11! root 946: case i_ADDX:
1.1.1.7 root 947: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
948: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 949: start_brace ();
1.1.1.7 root 950: printf ("\tuae_u32 newv = dst + src + (GET_XFLG ? 1 : 0);\n");
951: genflags (flag_addx, curi->size, "newv", "src", "dst");
952: genflags (flag_zn, curi->size, "newv", "", "");
953: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 954: break;
1.1.1.11! root 955: case i_ABCD:
1.1.1.7 root 956: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
957: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 958: start_brace ();
1.1.1.7 root 959: printf ("\tuae_u16 newv_lo = (src & 0xF) + (dst & 0xF) + (GET_XFLG ? 1 : 0);\n");
1.1.1.3 root 960: printf ("\tuae_u16 newv_hi = (src & 0xF0) + (dst & 0xF0);\n");
961: printf ("\tuae_u16 newv;\n");
1.1.1.7 root 962: printf ("\tint cflg;\n");
1.1.1.3 root 963: printf ("\tif (newv_lo > 9) { newv_lo +=6; }\n");
964: printf ("\tnewv = newv_hi + newv_lo;");
1.1.1.7 root 965: printf ("\tSET_CFLG (cflg = (newv & 0x1F0) > 0x90);\n");
966: duplicate_carry ();
967: printf ("\tif (cflg) newv += 0x60;\n");
968: genflags (flag_zn, curi->size, "newv", "", "");
969: genflags (flag_sv, curi->size, "newv", "src", "dst");
970: genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 971: break;
1.1.1.11! root 972: case i_NEG:
1.1.1.7 root 973: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1 root 974: start_brace ();
1.1.1.7 root 975: genflags (flag_sub, curi->size, "dst", "src", "0");
976: genastore ("dst", curi->smode, "srcreg", curi->size, "src");
1.1 root 977: break;
1.1.1.11! root 978: case i_NEGX:
1.1.1.7 root 979: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1 root 980: start_brace ();
1.1.1.7 root 981: printf ("\tuae_u32 newv = 0 - src - (GET_XFLG ? 1 : 0);\n");
982: genflags (flag_subx, curi->size, "newv", "src", "0");
983: genflags (flag_zn, curi->size, "newv", "", "");
984: genastore ("newv", curi->smode, "srcreg", curi->size, "src");
1.1 root 985: break;
1.1.1.11! root 986: case i_NBCD:
1.1.1.7 root 987: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1 root 988: start_brace ();
1.1.1.7 root 989: printf ("\tuae_u16 newv_lo = - (src & 0xF) - (GET_XFLG ? 1 : 0);\n");
1.1.1.3 root 990: printf ("\tuae_u16 newv_hi = - (src & 0xF0);\n");
991: printf ("\tuae_u16 newv;\n");
1.1.1.7 root 992: printf ("\tint cflg;\n");
1.1.1.3 root 993: printf ("\tif (newv_lo > 9) { newv_lo-=6; newv_hi-=0x10; }\n");
994: printf ("\tnewv = newv_hi + (newv_lo & 0xF);");
1.1.1.7 root 995: printf ("\tSET_CFLG (cflg = (newv_hi & 0x1F0) > 0x90);\n");
1.1.1.8 root 996: duplicate_carry();
1.1.1.7 root 997: printf ("\tif (cflg) newv -= 0x60;\n");
998: genflags (flag_zn, curi->size, "newv", "", "");
999: genastore ("newv", curi->smode, "srcreg", curi->size, "src");
1.1 root 1000: break;
1.1.1.11! root 1001: case i_CLR:
1.1.1.7 root 1002: genamode (curi->smode, "srcreg", curi->size, "src", 2, 0);
1003: genflags (flag_logical, curi->size, "0", "", "");
1004: genastore ("0", curi->smode, "srcreg", curi->size, "src");
1.1 root 1005: break;
1.1.1.11! root 1006: case i_NOT:
1.1.1.7 root 1007: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1 root 1008: start_brace ();
1.1.1.3 root 1009: printf ("\tuae_u32 dst = ~src;\n");
1.1.1.7 root 1010: genflags (flag_logical, curi->size, "dst", "", "");
1011: genastore ("dst", curi->smode, "srcreg", curi->size, "src");
1.1 root 1012: break;
1.1.1.11! root 1013: case i_TST:
1.1.1.7 root 1014: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1015: genflags (flag_logical, curi->size, "src", "", "");
1.1 root 1016: break;
1.1.1.11! root 1017: case i_BTST:
1.1.1.7 root 1018: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1019: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1020: if (curi->size == sz_byte)
1.1.1.3 root 1021: printf ("\tsrc &= 7;\n");
1.1 root 1022: else
1.1.1.3 root 1023: printf ("\tsrc &= 31;\n");
1.1.1.7 root 1024: printf ("\tSET_ZFLG (1 ^ ((dst >> src) & 1));\n");
1.1 root 1025: break;
1.1.1.11! root 1026: case i_BCHG:
1.1.1.7 root 1027: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1028: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1029: if (curi->size == sz_byte)
1.1.1.3 root 1030: printf ("\tsrc &= 7;\n");
1.1 root 1031: else
1.1.1.3 root 1032: printf ("\tsrc &= 31;\n");
1033: printf ("\tdst ^= (1 << src);\n");
1.1.1.9 root 1034: printf ("\tSET_ZFLG (((uae_u32)dst & (1 << src)) >> src);\n");
1.1.1.7 root 1035: genastore ("dst", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1036: break;
1.1.1.11! root 1037: case i_BCLR:
1.1.1.7 root 1038: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1039: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1040: if (curi->size == sz_byte)
1.1.1.3 root 1041: printf ("\tsrc &= 7;\n");
1.1 root 1042: else
1.1.1.3 root 1043: printf ("\tsrc &= 31;\n");
1.1.1.7 root 1044: printf ("\tSET_ZFLG (1 ^ ((dst >> src) & 1));\n");
1.1.1.3 root 1045: printf ("\tdst &= ~(1 << src);\n");
1.1.1.7 root 1046: genastore ("dst", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1047: break;
1.1.1.11! root 1048: case i_BSET:
1.1.1.7 root 1049: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1050: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1051: if (curi->size == sz_byte)
1.1.1.3 root 1052: printf ("\tsrc &= 7;\n");
1.1 root 1053: else
1.1.1.3 root 1054: printf ("\tsrc &= 31;\n");
1.1.1.7 root 1055: printf ("\tSET_ZFLG (1 ^ ((dst >> src) & 1));\n");
1.1.1.3 root 1056: printf ("\tdst |= (1 << src);\n");
1.1.1.7 root 1057: genastore ("dst", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1058: break;
1.1.1.11! root 1059: case i_CMPM:
! 1060: case i_CMP:
1.1.1.7 root 1061: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1062: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1 root 1063: start_brace ();
1.1.1.7 root 1064: genflags (flag_cmp, curi->size, "newv", "src", "dst");
1.1 root 1065: break;
1.1.1.11! root 1066: case i_CMPA:
1.1.1.7 root 1067: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1068: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1 root 1069: start_brace ();
1.1.1.5 root 1070: genflags (flag_cmp, sz_long, "newv", "src", "dst");
1.1 root 1071: break;
1072: /* The next two are coded a little unconventional, but they are doing
1073: * weird things... */
1.1.1.11! root 1074: case i_MVPRM:
1.1.1.7 root 1075: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.5 root 1076:
1077: printf ("\tuaecptr memp = m68k_areg(regs, dstreg) + (uae_s32)(uae_s16)%s;\n", gen_nextiword ());
1.1.1.7 root 1078: if (curi->size == sz_word) {
1.1.1.3 root 1079: printf ("\tput_byte(memp, src >> 8); put_byte(memp + 2, src);\n");
1.1 root 1080: } else {
1.1.1.3 root 1081: printf ("\tput_byte(memp, src >> 24); put_byte(memp + 2, src >> 16);\n");
1082: printf ("\tput_byte(memp + 4, src >> 8); put_byte(memp + 6, src);\n");
1.1 root 1083: }
1084: break;
1.1.1.11! root 1085: case i_MVPMR:
1.1.1.5 root 1086: printf ("\tuaecptr memp = m68k_areg(regs, srcreg) + (uae_s32)(uae_s16)%s;\n", gen_nextiword ());
1.1.1.7 root 1087: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1088: if (curi->size == sz_word) {
1.1.1.3 root 1089: printf ("\tuae_u16 val = (get_byte(memp) << 8) + get_byte(memp + 2);\n");
1.1 root 1090: } else {
1.1.1.3 root 1091: printf ("\tuae_u32 val = (get_byte(memp) << 24) + (get_byte(memp + 2) << 16)\n");
1092: printf (" + (get_byte(memp + 4) << 8) + get_byte(memp + 6);\n");
1.1 root 1093: }
1.1.1.7 root 1094: genastore ("val", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1095: break;
1.1.1.11! root 1096: case i_MOVE:
1.1.1.7 root 1097: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1098: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1099: genflags (flag_logical, curi->size, "src", "", "");
1100: genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1101: break;
1.1.1.11! root 1102: case i_MOVEA:
1.1.1.7 root 1103: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1104: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1105: if (curi->size == sz_word) {
1.1.1.3 root 1106: printf ("\tuae_u32 val = (uae_s32)(uae_s16)src;\n");
1.1 root 1107: } else {
1.1.1.3 root 1108: printf ("\tuae_u32 val = src;\n");
1.1 root 1109: }
1.1.1.7 root 1110: genastore ("val", curi->dmode, "dstreg", sz_long, "dst");
1.1 root 1111: break;
1.1.1.11! root 1112: case i_MVSR2:
1.1.1.7 root 1113: genamode (curi->smode, "srcreg", sz_word, "src", 2, 0);
1.1.1.3 root 1114: printf ("\tMakeSR();\n");
1.1.1.7 root 1115: if (curi->size == sz_byte)
1116: genastore ("regs.sr & 0xff", curi->smode, "srcreg", sz_word, "src");
1.1 root 1117: else
1.1.1.7 root 1118: genastore ("regs.sr", curi->smode, "srcreg", sz_word, "src");
1.1 root 1119: break;
1.1.1.11! root 1120: case i_MV2SR:
1.1.1.7 root 1121: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1122: if (curi->size == sz_byte)
1.1.1.3 root 1123: printf ("\tMakeSR();\n\tregs.sr &= 0xFF00;\n\tregs.sr |= src & 0xFF;\n");
1124: else {
1125: printf ("\tregs.sr = src;\n");
1.1 root 1126: }
1.1.1.3 root 1127: printf ("\tMakeFromSR();\n");
1.1 root 1128: break;
1.1.1.11! root 1129: case i_SWAP:
1.1.1.7 root 1130: genamode (curi->smode, "srcreg", sz_long, "src", 1, 0);
1.1 root 1131: start_brace ();
1.1.1.3 root 1132: printf ("\tuae_u32 dst = ((src >> 16)&0xFFFF) | ((src&0xFFFF)<<16);\n");
1.1.1.5 root 1133: genflags (flag_logical, sz_long, "dst", "", "");
1.1.1.7 root 1134: genastore ("dst", curi->smode, "srcreg", sz_long, "src");
1.1 root 1135: break;
1.1.1.11! root 1136: case i_EXG:
1.1.1.7 root 1137: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1138: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1139: genastore ("dst", curi->smode, "srcreg", curi->size, "src");
1140: genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1141: break;
1.1.1.11! root 1142: case i_EXT:
1.1.1.7 root 1143: genamode (curi->smode, "srcreg", sz_long, "src", 1, 0);
1.1 root 1144: start_brace ();
1.1.1.7 root 1145: switch (curi->size) {
1.1.1.11! root 1146: case sz_byte: printf ("\tuae_u32 dst = (uae_s32)(uae_s8)src;\n"); break;
! 1147: case sz_word: printf ("\tuae_u16 dst = (uae_s16)(uae_s8)src;\n"); break;
! 1148: case sz_long: printf ("\tuae_u32 dst = (uae_s32)(uae_s16)src;\n"); break;
! 1149: default: abort ();
1.1 root 1150: }
1.1.1.5 root 1151: genflags (flag_logical,
1.1.1.7 root 1152: curi->size == sz_word ? sz_word : sz_long, "dst", "", "");
1153: genastore ("dst", curi->smode, "srcreg",
1154: curi->size == sz_word ? sz_word : sz_long, "src");
1.1 root 1155: break;
1.1.1.11! root 1156: case i_MVMEL:
1.1.1.5 root 1157: genmovemel (opcode);
1.1 root 1158: break;
1.1.1.11! root 1159: case i_MVMLE:
1.1.1.5 root 1160: genmovemle (opcode);
1.1 root 1161: break;
1.1.1.11! root 1162: case i_TRAP:
1.1.1.7 root 1163: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.5 root 1164: sync_m68k_pc ();
1.1.1.3 root 1165: printf ("\tException(src+32,0);\n");
1166: m68k_pc_offset = 0;
1.1 root 1167: break;
1.1.1.11! root 1168: case i_MVR2USP:
1.1.1.7 root 1169: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.3 root 1170: printf ("\tregs.usp = src;\n");
1.1 root 1171: break;
1.1.1.11! root 1172: case i_MVUSP2R:
1.1.1.7 root 1173: genamode (curi->smode, "srcreg", curi->size, "src", 2, 0);
1174: genastore ("regs.usp", curi->smode, "srcreg", curi->size, "src");
1.1 root 1175: break;
1.1.1.11! root 1176: case i_RESET:
1.1.1.3 root 1177: printf ("\tcustomreset();\n");
1.1 root 1178: break;
1.1.1.11! root 1179: case i_NOP:
1.1 root 1180: break;
1.1.1.11! root 1181: case i_STOP:
1.1.1.7 root 1182: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.3 root 1183: printf ("\tregs.sr = src;\n");
1184: printf ("\tMakeFromSR();\n");
1185: printf ("\tm68k_setstopped(1);\n");
1.1 root 1186: break;
1.1.1.11! root 1187: case i_RTE:
1.1.1.3 root 1188: if (cpu_level == 0) {
1189: genamode (Aipi, "7", sz_word, "sr", 1, 0);
1190: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1191: printf ("\tregs.sr = sr; m68k_setpc_rte(pc);\n");
1192: fill_prefetch_0 ();
1193: printf ("\tMakeFromSR();\n");
1194: } else {
1.1 root 1195: int old_brace_level = n_braces;
1.1.1.3 root 1196: if (next_cpu_level < 0)
1197: next_cpu_level = 0;
1198: printf ("\tuae_u16 newsr; uae_u32 newpc; for (;;) {\n");
1199: genamode (Aipi, "7", sz_word, "sr", 1, 0);
1200: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1201: genamode (Aipi, "7", sz_word, "format", 1, 0);
1202: printf ("\tnewsr = sr; newpc = pc;\n");
1203: printf ("\tif ((format & 0xF000) == 0x0000) { break; }\n");
1204: printf ("\telse if ((format & 0xF000) == 0x1000) { ; }\n");
1205: printf ("\telse if ((format & 0xF000) == 0x2000) { m68k_areg(regs, 7) += 4; break; }\n");
1206: printf ("\telse if ((format & 0xF000) == 0x8000) { m68k_areg(regs, 7) += 50; break; }\n");
1207: printf ("\telse if ((format & 0xF000) == 0x9000) { m68k_areg(regs, 7) += 12; break; }\n");
1208: printf ("\telse if ((format & 0xF000) == 0xa000) { m68k_areg(regs, 7) += 24; break; }\n");
1209: printf ("\telse if ((format & 0xF000) == 0xb000) { m68k_areg(regs, 7) += 84; break; }\n");
1210: printf ("\telse { Exception(14,0); goto %s; }\n", endlabelstr);
1211: printf ("\tregs.sr = newsr; MakeFromSR();\n}\n");
1.1 root 1212: pop_braces (old_brace_level);
1.1.1.3 root 1213: printf ("\tregs.sr = newsr; MakeFromSR();\n");
1214: printf ("\tm68k_setpc_rte(newpc);\n");
1215: fill_prefetch_0 ();
1.1.1.5 root 1216: need_endlabel = 1;
1.1 root 1217: }
1.1.1.3 root 1218: /* PC is set and prefetch filled. */
1219: m68k_pc_offset = 0;
1.1 root 1220: break;
1.1.1.11! root 1221: case i_RTD:
1.1.1.3 root 1222: printf ("\tcompiler_flush_jsr_stack();\n");
1223: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1.1.1.7 root 1224: genamode (curi->smode, "srcreg", curi->size, "offs", 1, 0);
1.1.1.3 root 1225: printf ("\tm68k_areg(regs, 7) += offs;\n");
1226: printf ("\tm68k_setpc_rte(pc);\n");
1227: fill_prefetch_0 ();
1228: /* PC is set and prefetch filled. */
1229: m68k_pc_offset = 0;
1.1 root 1230: break;
1.1.1.11! root 1231: case i_LINK:
1.1.1.3 root 1232: genamode (Apdi, "7", sz_long, "old", 2, 0);
1.1.1.7 root 1233: genamode (curi->smode, "srcreg", sz_long, "src", 1, 0);
1.1.1.3 root 1234: genastore ("src", Apdi, "7", sz_long, "old");
1.1.1.7 root 1235: genastore ("m68k_areg(regs, 7)", curi->smode, "srcreg", sz_long, "src");
1236: genamode (curi->dmode, "dstreg", curi->size, "offs", 1, 0);
1.1.1.3 root 1237: printf ("\tm68k_areg(regs, 7) += offs;\n");
1.1 root 1238: break;
1.1.1.11! root 1239: case i_UNLK:
1.1.1.7 root 1240: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.3 root 1241: printf ("\tm68k_areg(regs, 7) = src;\n");
1242: genamode (Aipi, "7", sz_long, "old", 1, 0);
1.1.1.7 root 1243: genastore ("old", curi->smode, "srcreg", curi->size, "src");
1.1 root 1244: break;
1.1.1.11! root 1245: case i_RTS:
1.1.1.3 root 1246: printf ("\tm68k_do_rts();\n");
1247: fill_prefetch_0 ();
1248: m68k_pc_offset = 0;
1.1 root 1249: break;
1.1.1.11! root 1250: case i_TRAPV:
1.1.1.3 root 1251: sync_m68k_pc ();
1.1.1.7 root 1252: printf ("\tif (GET_VFLG) { Exception(7,m68k_getpc()); goto %s; }\n", endlabelstr);
1.1.1.5 root 1253: need_endlabel = 1;
1.1 root 1254: break;
1.1.1.11! root 1255: case i_RTR:
1.1.1.3 root 1256: printf ("\tcompiler_flush_jsr_stack();\n");
1257: printf ("\tMakeSR();\n");
1258: genamode (Aipi, "7", sz_word, "sr", 1, 0);
1259: genamode (Aipi, "7", sz_long, "pc", 1, 0);
1260: printf ("\tregs.sr &= 0xFF00; sr &= 0xFF;\n");
1261: printf ("\tregs.sr |= sr; m68k_setpc(pc);\n");
1262: fill_prefetch_0 ();
1263: printf ("\tMakeFromSR();\n");
1264: m68k_pc_offset = 0;
1.1 root 1265: break;
1.1.1.11! root 1266: case i_JSR:
1.1.1.7 root 1267: genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
1.1.1.3 root 1268: printf ("\tm68k_do_jsr(m68k_getpc() + %d, srca);\n", m68k_pc_offset);
1269: fill_prefetch_0 ();
1270: m68k_pc_offset = 0;
1271: break;
1.1.1.11! root 1272: case i_JMP:
1.1.1.7 root 1273: genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
1.1.1.3 root 1274: printf ("\tm68k_setpc(srca);\n");
1275: fill_prefetch_0 ();
1276: m68k_pc_offset = 0;
1.1 root 1277: break;
1.1.1.11! root 1278: case i_BSR:
1.1.1.7 root 1279: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.3 root 1280: printf ("\tuae_s32 s = (uae_s32)src + 2;\n");
1281: if (using_exception_3) {
1282: printf ("\tif (src & 1) {\n");
1283: printf ("\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1284: printf ("\t\tlast_fault_for_exception_3 = m68k_getpc() + s;\n");
1285: printf ("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1286: printf ("\t}\n");
1.1.1.5 root 1287: need_endlabel = 1;
1.1.1.3 root 1288: }
1289: printf ("\tm68k_do_bsr(m68k_getpc() + %d, s);\n", m68k_pc_offset);
1290: fill_prefetch_0 ();
1291: m68k_pc_offset = 0;
1.1 root 1292: break;
1.1.1.11! root 1293: case i_Bcc:
1.1.1.7 root 1294: if (curi->size == sz_long) {
1.1.1.3 root 1295: if (cpu_level < 2) {
1296: printf ("\tm68k_incpc(2);\n");
1.1.1.7 root 1297: printf ("\tif (!cctrue(%d)) goto %s;\n", curi->cc, endlabelstr);
1.1.1.3 root 1298: printf ("\t\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1299: printf ("\t\tlast_fault_for_exception_3 = m68k_getpc() + 1;\n");
1300: printf ("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1.1.1.5 root 1301: need_endlabel = 1;
1.1.1.3 root 1302: } else {
1303: if (next_cpu_level < 1)
1304: next_cpu_level = 1;
1305: }
1306: }
1.1.1.7 root 1307: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1308: printf ("\tif (!cctrue(%d)) goto didnt_jump;\n", curi->cc);
1.1.1.3 root 1309: if (using_exception_3) {
1310: printf ("\tif (src & 1) {\n");
1311: printf ("\t\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1312: printf ("\t\tlast_fault_for_exception_3 = m68k_getpc() + 2 + (uae_s32)src;\n");
1313: printf ("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1314: printf ("\t}\n");
1.1.1.5 root 1315: need_endlabel = 1;
1.1.1.3 root 1316: }
1.1 root 1317: #ifdef USE_COMPILER
1.1.1.3 root 1318: printf ("\tm68k_setpc_bcc(m68k_getpc() + 2 + (uae_s32)src);\n");
1.1 root 1319: #else
1.1.1.3 root 1320: printf ("\tm68k_incpc ((uae_s32)src + 2);\n");
1.1 root 1321: #endif
1.1.1.3 root 1322: fill_prefetch_0 ();
1.1.1.11! root 1323: printf ("\treturn 5;\n");
1.1.1.3 root 1324: printf ("didnt_jump:;\n");
1.1.1.5 root 1325: need_endlabel = 1;
1.1.1.11! root 1326: insn_n_cycles = curi->size == sz_byte ? 8 : 12;
1.1 root 1327: break;
1.1.1.11! root 1328: case i_LEA:
1.1.1.7 root 1329: genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
1330: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1331: genastore ("srca", curi->dmode, "dstreg", curi->size, "dst");
1.1 root 1332: break;
1.1.1.11! root 1333: case i_PEA:
1.1.1.7 root 1334: genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
1.1.1.3 root 1335: genamode (Apdi, "7", sz_long, "dst", 2, 0);
1336: genastore ("srca", Apdi, "7", sz_long, "dst");
1.1 root 1337: break;
1.1.1.11! root 1338: case i_DBcc:
1.1.1.7 root 1339: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1340: genamode (curi->dmode, "dstreg", curi->size, "offs", 1, 0);
1.1.1.3 root 1341:
1.1.1.7 root 1342: printf ("\tif (!cctrue(%d)) {\n", curi->cc);
1343: genastore ("(src-1)", curi->smode, "srcreg", curi->size, "src");
1.1.1.3 root 1344:
1345: printf ("\t\tif (src) {\n");
1346: if (using_exception_3) {
1347: printf ("\t\t\tif (offs & 1) {\n");
1348: printf ("\t\t\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
1349: printf ("\t\t\tlast_fault_for_exception_3 = m68k_getpc() + 2 + (uae_s32)offs + 2;\n");
1350: printf ("\t\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
1351: printf ("\t\t}\n");
1.1.1.5 root 1352: need_endlabel = 1;
1.1.1.3 root 1353: }
1.1 root 1354: #ifdef USE_COMPILER
1.1.1.3 root 1355: printf ("\t\t\tm68k_setpc_bcc(m68k_getpc() + (uae_s32)offs + 2);\n");
1.1 root 1356: #else
1.1.1.3 root 1357: printf ("\t\t\tm68k_incpc((uae_s32)offs + 2);\n");
1.1 root 1358: #endif
1.1.1.3 root 1359: fill_prefetch_0 ();
1.1.1.11! root 1360: /* ??? Cycle count is a guess. */
! 1361: printf ("\t\treturn 6;\n");
1.1.1.3 root 1362: printf ("\t\t}\n");
1363: printf ("\t}\n");
1.1.1.11! root 1364: insn_n_cycles = 12;
1.1.1.5 root 1365: need_endlabel = 1;
1.1 root 1366: break;
1.1.1.11! root 1367: case i_Scc:
1.1.1.7 root 1368: genamode (curi->smode, "srcreg", curi->size, "src", 2, 0);
1.1 root 1369: start_brace ();
1.1.1.7 root 1370: printf ("\tint val = cctrue(%d) ? 0xff : 0;\n", curi->cc);
1371: genastore ("val", curi->smode, "srcreg", curi->size, "src");
1.1 root 1372: break;
1.1.1.11! root 1373: case i_DIVU:
1.1.1.3 root 1374: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1375: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1376: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1.1.10 root 1377: sync_m68k_pc ();
1.1.1.9 root 1378: /* Clear V flag when dividing by zero - Alcatraz Odyssey demo depends
1379: * on this (actually, it's doing a DIVS). */
1380: printf ("\tif (src == 0) { SET_VFLG (0); Exception (5, oldpc); goto %s; } else {\n", endlabelstr);
1.1.1.3 root 1381: printf ("\tuae_u32 newv = (uae_u32)dst / (uae_u32)(uae_u16)src;\n");
1382: printf ("\tuae_u32 rem = (uae_u32)dst %% (uae_u32)(uae_u16)src;\n");
1.1 root 1383: /* The N flag appears to be set each time there is an overflow.
1384: * Weird. */
1.1.1.7 root 1385: printf ("\tif (newv > 0xffff) { SET_VFLG (1); SET_NFLG (1); SET_CFLG (0); } else\n\t{\n");
1.1.1.5 root 1386: genflags (flag_logical, sz_word, "newv", "", "");
1.1.1.3 root 1387: printf ("\tnewv = (newv & 0xffff) | ((uae_u32)rem << 16);\n");
1.1.1.7 root 1388: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1.1.3 root 1389: printf ("\t}\n");
1390: printf ("\t}\n");
1.1.1.11! root 1391: insn_n_cycles += 136;
1.1.1.5 root 1392: need_endlabel = 1;
1.1.1.3 root 1393: break;
1.1.1.11! root 1394: case i_DIVS:
1.1.1.3 root 1395: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1396: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1397: genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1.1.1.10 root 1398: sync_m68k_pc ();
1.1.1.9 root 1399: printf ("\tif (src == 0) { SET_VFLG (0); Exception(5,oldpc); goto %s; } else {\n", endlabelstr);
1.1.1.3 root 1400: printf ("\tuae_s32 newv = (uae_s32)dst / (uae_s32)(uae_s16)src;\n");
1401: printf ("\tuae_u16 rem = (uae_s32)dst %% (uae_s32)(uae_s16)src;\n");
1.1.1.7 root 1402: 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 1403: printf ("\tif (((uae_s16)rem < 0) != ((uae_s32)dst < 0)) rem = -rem;\n");
1.1.1.5 root 1404: genflags (flag_logical, sz_word, "newv", "", "");
1.1.1.3 root 1405: printf ("\tnewv = (newv & 0xffff) | ((uae_u32)rem << 16);\n");
1.1.1.7 root 1406: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1.1.3 root 1407: printf ("\t}\n");
1408: printf ("\t}\n");
1.1.1.11! root 1409: insn_n_cycles += 154;
1.1.1.5 root 1410: need_endlabel = 1;
1.1.1.3 root 1411: break;
1.1.1.11! root 1412: case i_MULU:
1.1.1.7 root 1413: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1414: genamode (curi->dmode, "dstreg", sz_word, "dst", 1, 0);
1.1 root 1415: start_brace ();
1.1.1.3 root 1416: printf ("\tuae_u32 newv = (uae_u32)(uae_u16)dst * (uae_u32)(uae_u16)src;\n");
1.1.1.5 root 1417: genflags (flag_logical, sz_long, "newv", "", "");
1.1.1.7 root 1418: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1.1.11! root 1419: insn_n_cycles += 66;
1.1 root 1420: break;
1.1.1.11! root 1421: case i_MULS:
1.1.1.7 root 1422: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1423: genamode (curi->dmode, "dstreg", sz_word, "dst", 1, 0);
1.1 root 1424: start_brace ();
1.1.1.3 root 1425: printf ("\tuae_u32 newv = (uae_s32)(uae_s16)dst * (uae_s32)(uae_s16)src;\n");
1.1.1.5 root 1426: genflags (flag_logical, sz_long, "newv", "", "");
1.1.1.7 root 1427: genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
1.1.1.11! root 1428: insn_n_cycles += 66;
1.1 root 1429: break;
1.1.1.11! root 1430: case i_CHK:
1.1.1.3 root 1431: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1432: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1433: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1434: printf ("\tif ((uae_s32)dst < 0) { SET_NFLG (1); Exception(6,oldpc); goto %s; }\n", endlabelstr);
1435: printf ("\telse if (dst > src) { SET_NFLG (0); Exception(6,oldpc); goto %s; }\n", endlabelstr);
1.1.1.5 root 1436: need_endlabel = 1;
1.1 root 1437: break;
1.1.1.3 root 1438:
1.1.1.11! root 1439: case i_CHK2:
1.1.1.3 root 1440: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1441: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1442: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
1.1.1.3 root 1443: printf ("\t{uae_s32 upper,lower,reg = regs.regs[(extra >> 12) & 15];\n");
1.1.1.7 root 1444: switch (curi->size) {
1.1.1.11! root 1445: case sz_byte:
1.1.1.3 root 1446: printf ("\tlower=(uae_s32)(uae_s8)get_byte(dsta); upper = (uae_s32)(uae_s8)get_byte(dsta+1);\n");
1447: printf ("\tif ((extra & 0x8000) == 0) reg = (uae_s32)(uae_s8)reg;\n");
1448: break;
1.1.1.11! root 1449: case sz_word:
1.1.1.3 root 1450: printf ("\tlower=(uae_s32)(uae_s16)get_word(dsta); upper = (uae_s32)(uae_s16)get_word(dsta+2);\n");
1451: printf ("\tif ((extra & 0x8000) == 0) reg = (uae_s32)(uae_s16)reg;\n");
1452: break;
1.1.1.11! root 1453: case sz_long:
1.1.1.3 root 1454: printf ("\tlower=get_long(dsta); upper = get_long(dsta+4);\n");
1455: break;
1.1.1.11! root 1456: default:
1.1.1.5 root 1457: abort ();
1.1.1.3 root 1458: }
1.1.1.7 root 1459: printf ("\tSET_ZFLG (upper == reg || lower == reg);\n");
1460: printf ("\tSET_CFLG (lower <= upper ? reg < lower || reg > upper : reg > upper || reg < lower);\n");
1461: printf ("\tif ((extra & 0x800) && GET_CFLG) { Exception(6,oldpc); goto %s; }\n}\n", endlabelstr);
1.1.1.5 root 1462: need_endlabel = 1;
1.1.1.3 root 1463: break;
1464:
1.1.1.11! root 1465: case i_ASR:
1.1.1.7 root 1466: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1467: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1.1.3 root 1468: start_brace ();
1.1.1.7 root 1469: switch (curi->size) {
1.1.1.11! root 1470: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
! 1471: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
! 1472: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
! 1473: default: abort ();
1.1 root 1474: }
1.1.1.7 root 1475: printf ("\tuae_u32 sign = (%s & val) >> %d;\n", cmask (curi->size), bit_size (curi->size) - 1);
1.1.1.3 root 1476: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1477: printf ("\tCLEAR_CZNV;\n");
1478: printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
1479: printf ("\t\tval = %s & (uae_u32)-sign;\n", bit_mask (curi->size));
1480: printf ("\t\tSET_CFLG (sign);\n");
1481: duplicate_carry ();
1482: if (source_is_imm1_8 (curi))
1483: printf ("\t} else {\n");
1484: else
1485: printf ("\t} else if (cnt > 0) {\n");
1486: printf ("\t\tval >>= cnt - 1;\n");
1487: printf ("\t\tSET_CFLG (val & 1);\n");
1488: duplicate_carry ();
1489: printf ("\t\tval >>= 1;\n");
1490: printf ("\t\tval |= (%s << (%d - cnt)) & (uae_u32)-sign;\n",
1491: bit_mask (curi->size),
1492: bit_size (curi->size));
1493: printf ("\t\tval &= %s;\n", bit_mask (curi->size));
1494: printf ("\t}\n");
1495: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1496: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1497: break;
1.1.1.11! root 1498: case i_ASL:
1.1.1.7 root 1499: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1500: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1501: start_brace ();
1.1.1.7 root 1502: switch (curi->size) {
1.1.1.11! root 1503: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
! 1504: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
! 1505: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
! 1506: default: abort ();
1.1 root 1507: }
1.1.1.3 root 1508: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1509: printf ("\tCLEAR_CZNV;\n");
1510: printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
1511: printf ("\t\tSET_VFLG (val != 0);\n");
1512: printf ("\t\tSET_CFLG (cnt == %d ? val & 1 : 0);\n",
1513: bit_size (curi->size));
1514: duplicate_carry ();
1.1.1.3 root 1515: printf ("\t\tval = 0;\n");
1.1.1.7 root 1516: if (source_is_imm1_8 (curi))
1517: printf ("\t} else {\n");
1518: else
1519: printf ("\t} else if (cnt > 0) {\n");
1.1.1.3 root 1520: printf ("\t\tuae_u32 mask = (%s << (%d - cnt)) & %s;\n",
1.1.1.7 root 1521: bit_mask (curi->size),
1522: bit_size (curi->size) - 1,
1523: bit_mask (curi->size));
1524: printf ("\t\tSET_VFLG ((val & mask) != mask && (val & mask) != 0);\n");
1525: printf ("\t\tval <<= cnt - 1;\n");
1526: printf ("\t\tSET_CFLG ((val & %s) >> %d);\n", cmask (curi->size), bit_size (curi->size) - 1);
1527: duplicate_carry ();
1528: printf ("\t\tval <<= 1;\n");
1529: printf ("\t\tval &= %s;\n", bit_mask (curi->size));
1530: printf ("\t}\n");
1531: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1532: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1533: break;
1.1.1.11! root 1534: case i_LSR:
1.1.1.7 root 1535: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1536: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1537: start_brace ();
1.1.1.7 root 1538: switch (curi->size) {
1.1.1.11! root 1539: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
! 1540: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
! 1541: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
! 1542: default: abort ();
1.1 root 1543: }
1.1.1.3 root 1544: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1545: printf ("\tCLEAR_CZNV;\n");
1546: printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
1547: printf ("\t\tSET_CFLG ((cnt == %d) & (val >> %d));\n",
1548: bit_size (curi->size), bit_size (curi->size) - 1);
1549: duplicate_carry ();
1.1.1.3 root 1550: printf ("\t\tval = 0;\n");
1.1.1.7 root 1551: if (source_is_imm1_8 (curi))
1552: printf ("\t} else {\n");
1553: else
1554: printf ("\t} else if (cnt > 0) {\n");
1555: printf ("\t\tval >>= cnt - 1;\n");
1556: printf ("\t\tSET_CFLG (val & 1);\n");
1557: duplicate_carry ();
1558: printf ("\t\tval >>= 1;\n");
1559: printf ("\t}\n");
1560: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1561: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1562: break;
1.1.1.11! root 1563: case i_LSL:
1.1.1.7 root 1564: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1565: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1566: start_brace ();
1.1.1.7 root 1567: switch (curi->size) {
1.1.1.11! root 1568: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
! 1569: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
! 1570: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
! 1571: default: abort ();
1.1 root 1572: }
1.1.1.3 root 1573: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1574: printf ("\tCLEAR_CZNV;\n");
1575: printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
1576: printf ("\t\tSET_CFLG (cnt == %d ? val & 1 : 0);\n",
1577: bit_size (curi->size));
1578: duplicate_carry ();
1.1.1.3 root 1579: printf ("\t\tval = 0;\n");
1.1.1.7 root 1580: if (source_is_imm1_8 (curi))
1581: printf ("\t} else {\n");
1582: else
1583: printf ("\t} else if (cnt > 0) {\n");
1584: printf ("\t\tval <<= (cnt - 1);\n");
1585: printf ("\t\tSET_CFLG ((val & %s) >> %d);\n", cmask (curi->size), bit_size (curi->size) - 1);
1586: duplicate_carry ();
1587: printf ("\t\tval <<= 1;\n");
1588: printf ("\tval &= %s;\n", bit_mask (curi->size));
1589: printf ("\t}\n");
1590: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1591: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1592: break;
1.1.1.11! root 1593: case i_ROL:
1.1.1.7 root 1594: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1595: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1596: start_brace ();
1.1.1.7 root 1597: switch (curi->size) {
1.1.1.11! root 1598: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
! 1599: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
! 1600: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
! 1601: default: abort ();
1.1 root 1602: }
1.1.1.3 root 1603: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1604: printf ("\tCLEAR_CZNV;\n");
1605: if (source_is_imm1_8 (curi))
1606: printf ("{");
1607: else
1608: printf ("\tif (cnt > 0) {\n");
1609: printf ("\tuae_u32 loval;\n");
1610: printf ("\tcnt &= %d;\n", bit_size (curi->size) - 1);
1611: printf ("\tloval = val >> (%d - cnt);\n", bit_size (curi->size));
1612: printf ("\tval <<= cnt;\n");
1613: printf ("\tval |= loval;\n");
1614: printf ("\tval &= %s;\n", bit_mask (curi->size));
1615: printf ("\tSET_CFLG (val & 1);\n");
1616: printf ("}\n");
1617: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1618: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1619: break;
1.1.1.11! root 1620: case i_ROR:
1.1.1.7 root 1621: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1622: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1623: start_brace ();
1.1.1.7 root 1624: switch (curi->size) {
1.1.1.11! root 1625: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
! 1626: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
! 1627: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
! 1628: default: abort ();
1.1 root 1629: }
1.1.1.3 root 1630: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1631: printf ("\tCLEAR_CZNV;\n");
1632: if (source_is_imm1_8 (curi))
1633: printf ("{");
1634: else
1635: printf ("\tif (cnt > 0) {");
1636: printf ("\tuae_u32 hival;\n");
1637: printf ("\tcnt &= %d;\n", bit_size (curi->size) - 1);
1638: printf ("\thival = val << (%d - cnt);\n", bit_size (curi->size));
1639: printf ("\tval >>= cnt;\n");
1640: printf ("\tval |= hival;\n");
1641: printf ("\tval &= %s;\n", bit_mask (curi->size));
1642: printf ("\tSET_CFLG ((val & %s) >> %d);\n", cmask (curi->size), bit_size (curi->size) - 1);
1.1.1.3 root 1643: printf ("\t}\n");
1.1.1.7 root 1644: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1645: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1646: break;
1.1.1.11! root 1647: case i_ROXL:
1.1.1.7 root 1648: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1649: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1650: start_brace ();
1.1.1.7 root 1651: switch (curi->size) {
1.1.1.11! root 1652: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
! 1653: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
! 1654: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
! 1655: default: abort ();
1.1 root 1656: }
1.1.1.3 root 1657: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1658: printf ("\tCLEAR_CZNV;\n");
1659: if (! source_is_imm1_8 (curi))
1660: force_range_for_rox ("cnt", curi->size);
1661: if (source_is_imm1_8 (curi))
1662: printf ("{");
1663: else
1664: printf ("\tif (cnt > 0) {\n");
1665: printf ("\tcnt--;\n");
1666: printf ("\t{\n\tuae_u32 carry;\n");
1667: printf ("\tuae_u32 loval = val >> (%d - cnt);\n", bit_size (curi->size) - 1);
1668: printf ("\tcarry = loval & 1;\n");
1669: printf ("\tval = (((val << 1) | GET_XFLG) << cnt) | (loval >> 1);\n");
1670: printf ("\tSET_XFLG (carry);\n");
1671: printf ("\tval &= %s;\n", bit_mask (curi->size));
1672: printf ("\t} }\n");
1673: printf ("\tSET_CFLG (GET_XFLG);\n");
1674: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1675: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1676: break;
1.1.1.11! root 1677: case i_ROXR:
1.1.1.7 root 1678: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
1679: genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
1.1 root 1680: start_brace ();
1.1.1.7 root 1681: switch (curi->size) {
1.1.1.11! root 1682: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
! 1683: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
! 1684: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
! 1685: default: abort ();
1.1 root 1686: }
1.1.1.3 root 1687: printf ("\tcnt &= 63;\n");
1.1.1.7 root 1688: printf ("\tCLEAR_CZNV;\n");
1689: if (! source_is_imm1_8 (curi))
1690: force_range_for_rox ("cnt", curi->size);
1691: if (source_is_imm1_8 (curi))
1692: printf ("{");
1693: else
1694: printf ("\tif (cnt > 0) {\n");
1695: printf ("\tcnt--;\n");
1696: printf ("\t{\n\tuae_u32 carry;\n");
1697: printf ("\tuae_u32 hival = (val << 1) | GET_XFLG;\n");
1698: printf ("\thival <<= (%d - cnt);\n", bit_size (curi->size) - 1);
1699: printf ("\tval >>= cnt;\n");
1700: printf ("\tcarry = val & 1;\n");
1701: printf ("\tval >>= 1;\n");
1702: printf ("\tval |= hival;\n");
1703: printf ("\tSET_XFLG (carry);\n");
1704: printf ("\tval &= %s;\n", bit_mask (curi->size));
1705: printf ("\t} }\n");
1706: printf ("\tSET_CFLG (GET_XFLG);\n");
1707: genflags (flag_logical_noclobber, curi->size, "val", "", "");
1708: genastore ("val", curi->dmode, "dstreg", curi->size, "data");
1.1 root 1709: break;
1.1.1.11! root 1710: case i_ASRW:
1.1.1.7 root 1711: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1712: start_brace ();
1.1.1.7 root 1713: switch (curi->size) {
1.1.1.11! root 1714: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
! 1715: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
! 1716: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
! 1717: default: abort ();
1.1 root 1718: }
1.1.1.7 root 1719: printf ("\tuae_u32 sign = %s & val;\n", cmask (curi->size));
1720: printf ("\tuae_u32 cflg = val & 1;\n");
1721: printf ("\tval = (val >> 1) | sign;\n");
1722: genflags (flag_logical, curi->size, "val", "", "");
1723: printf ("\tSET_CFLG (cflg);\n");
1724: duplicate_carry ();
1725: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1726: break;
1.1.1.11! root 1727: case i_ASLW:
1.1.1.7 root 1728: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1729: start_brace ();
1.1.1.7 root 1730: switch (curi->size) {
1.1.1.11! root 1731: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
! 1732: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
! 1733: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
! 1734: default: abort ();
1.1 root 1735: }
1.1.1.7 root 1736: printf ("\tuae_u32 sign = %s & val;\n", cmask (curi->size));
1737: printf ("\tuae_u32 sign2;\n");
1738: printf ("\tval <<= 1;\n");
1739: genflags (flag_logical, curi->size, "val", "", "");
1740: printf ("\tsign2 = %s & val;\n", cmask (curi->size));
1741: printf ("\tSET_CFLG (sign != 0);\n");
1742: duplicate_carry ();
1743:
1744: printf ("\tSET_VFLG (GET_VFLG | (sign2 != sign));\n");
1745: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1746: break;
1.1.1.11! root 1747: case i_LSRW:
1.1.1.7 root 1748: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1749: start_brace ();
1.1.1.7 root 1750: switch (curi->size) {
1.1.1.11! root 1751: case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
! 1752: case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
! 1753: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
! 1754: default: abort ();
1.1 root 1755: }
1.1.1.7 root 1756: printf ("\tuae_u32 carry = val & 1;\n");
1.1.1.3 root 1757: printf ("\tval >>= 1;\n");
1.1.1.7 root 1758: genflags (flag_logical, curi->size, "val", "", "");
1759: printf ("SET_CFLG (carry);\n");
1760: duplicate_carry ();
1761: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1762: break;
1.1.1.11! root 1763: case i_LSLW:
1.1.1.7 root 1764: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1765: start_brace ();
1.1.1.7 root 1766: switch (curi->size) {
1.1.1.11! root 1767: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
! 1768: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
! 1769: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
! 1770: default: abort ();
1.1 root 1771: }
1.1.1.7 root 1772: printf ("\tuae_u32 carry = val & %s;\n", cmask (curi->size));
1.1.1.3 root 1773: printf ("\tval <<= 1;\n");
1.1.1.7 root 1774: genflags (flag_logical, curi->size, "val", "", "");
1775: printf ("SET_CFLG (carry >> %d);\n", bit_size (curi->size) - 1);
1776: duplicate_carry ();
1777: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1778: break;
1.1.1.11! root 1779: case i_ROLW:
1.1.1.7 root 1780: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1781: start_brace ();
1.1.1.7 root 1782: switch (curi->size) {
1.1.1.11! root 1783: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
! 1784: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
! 1785: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
! 1786: default: abort ();
1.1 root 1787: }
1.1.1.7 root 1788: printf ("\tuae_u32 carry = val & %s;\n", cmask (curi->size));
1.1.1.3 root 1789: printf ("\tval <<= 1;\n");
1.1.1.7 root 1790: printf ("\tif (carry) val |= 1;\n");
1791: genflags (flag_logical, curi->size, "val", "", "");
1792: printf ("SET_CFLG (carry >> %d);\n", bit_size (curi->size) - 1);
1793: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1794: break;
1.1.1.11! root 1795: case i_RORW:
1.1.1.7 root 1796: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1797: start_brace ();
1.1.1.7 root 1798: switch (curi->size) {
1.1.1.11! root 1799: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
! 1800: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
! 1801: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
! 1802: default: abort ();
1.1 root 1803: }
1.1.1.7 root 1804: printf ("\tuae_u32 carry = val & 1;\n");
1.1.1.3 root 1805: printf ("\tval >>= 1;\n");
1.1.1.7 root 1806: printf ("\tif (carry) val |= %s;\n", cmask (curi->size));
1807: genflags (flag_logical, curi->size, "val", "", "");
1808: printf ("SET_CFLG (carry);\n");
1809: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1810: break;
1.1.1.11! root 1811: case i_ROXLW:
1.1.1.7 root 1812: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1813: start_brace ();
1.1.1.7 root 1814: switch (curi->size) {
1.1.1.11! root 1815: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
! 1816: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
! 1817: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
! 1818: default: abort ();
1.1 root 1819: }
1.1.1.7 root 1820: printf ("\tuae_u32 carry = val & %s;\n", cmask (curi->size));
1.1.1.3 root 1821: printf ("\tval <<= 1;\n");
1.1.1.7 root 1822: printf ("\tif (GET_XFLG) val |= 1;\n");
1823: genflags (flag_logical, curi->size, "val", "", "");
1824: printf ("SET_CFLG (carry >> %d);\n", bit_size (curi->size) - 1);
1825: duplicate_carry ();
1826: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1827: break;
1.1.1.11! root 1828: case i_ROXRW:
1.1.1.7 root 1829: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
1.1 root 1830: start_brace ();
1.1.1.7 root 1831: switch (curi->size) {
1.1.1.11! root 1832: case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
! 1833: case sz_word: printf ("\tuae_u16 val = data;\n"); break;
! 1834: case sz_long: printf ("\tuae_u32 val = data;\n"); break;
! 1835: default: abort ();
1.1 root 1836: }
1.1.1.7 root 1837: printf ("\tuae_u32 carry = val & 1;\n");
1.1.1.3 root 1838: printf ("\tval >>= 1;\n");
1.1.1.7 root 1839: printf ("\tif (GET_XFLG) val |= %s;\n", cmask (curi->size));
1840: genflags (flag_logical, curi->size, "val", "", "");
1841: printf ("SET_CFLG (carry);\n");
1842: duplicate_carry ();
1843: genastore ("val", curi->smode, "srcreg", curi->size, "data");
1.1 root 1844: break;
1.1.1.11! root 1845: case i_MOVEC2:
1.1.1.7 root 1846: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.5 root 1847: start_brace ();
1.1.1.3 root 1848: printf ("\tint regno = (src >> 12) & 15;\n");
1849: printf ("\tuae_u32 *regp = regs.regs + regno;\n");
1.1.1.9 root 1850: printf ("\tif (! m68k_movec2(src & 0xFFF, regp)) goto %s;\n", endlabelstr);
1.1 root 1851: break;
1.1.1.11! root 1852: case i_MOVE2C:
1.1.1.7 root 1853: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1.1.1.5 root 1854: start_brace ();
1.1.1.3 root 1855: printf ("\tint regno = (src >> 12) & 15;\n");
1856: printf ("\tuae_u32 *regp = regs.regs + regno;\n");
1.1.1.9 root 1857: printf ("\tif (! m68k_move2c(src & 0xFFF, regp)) goto %s;\n", endlabelstr);
1.1 root 1858: break;
1.1.1.11! root 1859: case i_CAS:
! 1860: {
! 1861: int old_brace_level;
! 1862: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
! 1863: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
! 1864: start_brace ();
! 1865: printf ("\tint ru = (src >> 6) & 7;\n");
! 1866: printf ("\tint rc = src & 7;\n");
! 1867: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, rc)", "dst");
! 1868: printf ("\tif (GET_ZFLG)");
! 1869: old_brace_level = n_braces;
! 1870: start_brace ();
! 1871: genastore ("(m68k_dreg(regs, ru))", curi->dmode, "dstreg", curi->size, "dst");
! 1872: pop_braces (old_brace_level);
! 1873: printf ("else");
! 1874: start_brace ();
! 1875: printf ("m68k_dreg(regs, rc) = dst;\n");
! 1876: pop_braces (old_brace_level);
! 1877: }
! 1878: break;
! 1879: case i_CAS2:
1.1.1.7 root 1880: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.8 root 1881: printf ("\tuae_u32 rn1 = regs.regs[(extra >> 28) & 15];\n");
1882: printf ("\tuae_u32 rn2 = regs.regs[(extra >> 12) & 15];\n");
1.1.1.7 root 1883: if (curi->size == sz_word) {
1.1.1.5 root 1884: int old_brace_level = n_braces;
1885: printf ("\tuae_u16 dst1 = get_word(rn1), dst2 = get_word(rn2);\n");
1.1.1.7 root 1886: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, (extra >> 16) & 7)", "dst1");
1887: printf ("\tif (GET_ZFLG) {\n");
1888: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, extra & 7)", "dst2");
1889: printf ("\tif (GET_ZFLG) {\n");
1.1.1.5 root 1890: printf ("\tput_word(rn1, m68k_dreg(regs, (extra >> 22) & 7));\n");
1891: printf ("\tput_word(rn1, m68k_dreg(regs, (extra >> 6) & 7));\n");
1892: printf ("\t}}\n");
1893: pop_braces (old_brace_level);
1.1.1.7 root 1894: printf ("\tif (! GET_ZFLG) {\n");
1.1.1.5 root 1895: printf ("\tm68k_dreg(regs, (extra >> 22) & 7) = (m68k_dreg(regs, (extra >> 22) & 7) & ~0xffff) | (dst1 & 0xffff);\n");
1896: printf ("\tm68k_dreg(regs, (extra >> 6) & 7) = (m68k_dreg(regs, (extra >> 6) & 7) & ~0xffff) | (dst2 & 0xffff);\n");
1897: printf ("\t}\n");
1.1 root 1898: } else {
1.1.1.5 root 1899: int old_brace_level = n_braces;
1900: printf ("\tuae_u32 dst1 = get_long(rn1), dst2 = get_long(rn2);\n");
1.1.1.7 root 1901: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, (extra >> 16) & 7)", "dst1");
1902: printf ("\tif (GET_ZFLG) {\n");
1903: genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, extra & 7)", "dst2");
1904: printf ("\tif (GET_ZFLG) {\n");
1.1.1.5 root 1905: printf ("\tput_long(rn1, m68k_dreg(regs, (extra >> 22) & 7));\n");
1906: printf ("\tput_long(rn1, m68k_dreg(regs, (extra >> 6) & 7));\n");
1907: printf ("\t}}\n");
1908: pop_braces (old_brace_level);
1.1.1.7 root 1909: printf ("\tif (! GET_ZFLG) {\n");
1.1.1.5 root 1910: printf ("\tm68k_dreg(regs, (extra >> 22) & 7) = dst1;\n");
1911: printf ("\tm68k_dreg(regs, (extra >> 6) & 7) = dst2;\n");
1912: printf ("\t}\n");
1.1 root 1913: }
1914: break;
1.1.1.11! root 1915: case i_MOVES: /* ignore DFC and SFC because we have no MMU */
! 1916: {
! 1917: int old_brace_level;
! 1918: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
! 1919: printf ("\tif (extra & 0x800)\n");
! 1920: old_brace_level = n_braces;
! 1921: start_brace ();
! 1922: printf ("\tuae_u32 src = regs.regs[(extra >> 12) & 15];\n");
! 1923: genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
! 1924: genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
! 1925: pop_braces (old_brace_level);
! 1926: printf ("else");
! 1927: start_brace ();
! 1928: genamode (curi->dmode, "dstreg", curi->size, "src", 1, 0);
! 1929: printf ("\tif (extra & 0x8000) {\n");
! 1930: switch (curi->size) {
! 1931: case sz_byte: printf ("\tm68k_areg(regs, (extra >> 12) & 7) = (uae_s32)(uae_s8)src;\n"); break;
! 1932: case sz_word: printf ("\tm68k_areg(regs, (extra >> 12) & 7) = (uae_s32)(uae_s16)src;\n"); break;
! 1933: case sz_long: printf ("\tm68k_areg(regs, (extra >> 12) & 7) = src;\n"); break;
! 1934: default: abort ();
1.1 root 1935: }
1.1.1.11! root 1936: printf ("\t} else {\n");
! 1937: genastore ("src", Dreg, "(extra >> 12) & 7", curi->size, "");
! 1938: printf ("\t}\n");
! 1939: pop_braces (old_brace_level);
! 1940: }
! 1941: break;
! 1942: case i_BKPT: /* only needed for hardware emulators */
1.1.1.5 root 1943: sync_m68k_pc ();
1.1.1.3 root 1944: printf ("\top_illg(opcode);\n");
1.1 root 1945: break;
1.1.1.11! root 1946: case i_CALLM: /* not present in 68030 */
1.1.1.5 root 1947: sync_m68k_pc ();
1.1.1.3 root 1948: printf ("\top_illg(opcode);\n");
1.1 root 1949: break;
1.1.1.11! root 1950: case i_RTM: /* not present in 68030 */
1.1.1.5 root 1951: sync_m68k_pc ();
1.1.1.3 root 1952: printf ("\top_illg(opcode);\n");
1.1 root 1953: break;
1.1.1.11! root 1954: case i_TRAPcc:
1.1.1.7 root 1955: if (curi->smode != am_unknown && curi->smode != am_illg)
1956: genamode (curi->smode, "srcreg", curi->size, "dummy", 1, 0);
1957: printf ("\tif (cctrue(%d)) { Exception(7,m68k_getpc()); goto %s; }\n", curi->cc, endlabelstr);
1.1.1.5 root 1958: need_endlabel = 1;
1.1 root 1959: break;
1.1.1.11! root 1960: case i_DIVL:
1.1.1.3 root 1961: sync_m68k_pc ();
1962: start_brace ();
1963: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 1964: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1965: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1.1.5 root 1966: sync_m68k_pc ();
1.1.1.3 root 1967: printf ("\tm68k_divl(opcode, dst, extra, oldpc);\n");
1.1 root 1968: break;
1.1.1.11! root 1969: case i_MULL:
1.1.1.7 root 1970: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1971: genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
1.1.1.5 root 1972: sync_m68k_pc ();
1.1.1.3 root 1973: printf ("\tm68k_mull(opcode, dst, extra);\n");
1.1 root 1974: break;
1.1.1.11! root 1975: case i_BFTST:
! 1976: case i_BFEXTU:
! 1977: case i_BFCHG:
! 1978: case i_BFEXTS:
! 1979: case i_BFCLR:
! 1980: case i_BFFFO:
! 1981: case i_BFSET:
! 1982: case i_BFINS:
1.1.1.7 root 1983: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1984: genamode (curi->dmode, "dstreg", sz_long, "dst", 2, 0);
1.1.1.5 root 1985: start_brace ();
1.1.1.3 root 1986: printf ("\tuae_s32 offset = extra & 0x800 ? m68k_dreg(regs, (extra >> 6) & 7) : (extra >> 6) & 0x1f;\n");
1987: printf ("\tint width = (((extra & 0x20 ? m68k_dreg(regs, extra & 7) : extra) -1) & 0x1f) +1;\n");
1.1.1.7 root 1988: if (curi->dmode == Dreg) {
1.1.1.3 root 1989: printf ("\tuae_u32 tmp = m68k_dreg(regs, dstreg) << (offset & 0x1f);\n");
1990: } else {
1991: printf ("\tuae_u32 tmp,bf0,bf1;\n");
1992: printf ("\tdsta += (offset >> 3) | (offset & 0x80000000 ? ~0x1fffffff : 0);\n");
1993: printf ("\tbf0 = get_long(dsta);bf1 = get_byte(dsta+4) & 0xff;\n");
1994: printf ("\ttmp = (bf0 << (offset & 7)) | (bf1 >> (8 - (offset & 7)));\n");
1995: }
1996: printf ("\ttmp >>= (32 - width);\n");
1.1.1.7 root 1997: printf ("\tSET_NFLG (tmp & (1 << (width-1)) ? 1 : 0);\n");
1998: printf ("\tSET_ZFLG (tmp == 0); SET_VFLG (0); SET_CFLG (0);\n");
1999: switch (curi->mnemo) {
1.1.1.11! root 2000: case i_BFTST:
1.1.1.3 root 2001: break;
1.1.1.11! root 2002: case i_BFEXTU:
1.1.1.3 root 2003: printf ("\tm68k_dreg(regs, (extra >> 12) & 7) = tmp;\n");
2004: break;
1.1.1.11! root 2005: case i_BFCHG:
1.1.1.3 root 2006: printf ("\ttmp = ~tmp;\n");
2007: break;
1.1.1.11! root 2008: case i_BFEXTS:
1.1.1.7 root 2009: printf ("\tif (GET_NFLG) tmp |= width == 32 ? 0 : (-1 << width);\n");
1.1.1.3 root 2010: printf ("\tm68k_dreg(regs, (extra >> 12) & 7) = tmp;\n");
2011: break;
1.1.1.11! root 2012: case i_BFCLR:
1.1.1.3 root 2013: printf ("\ttmp = 0;\n");
2014: break;
1.1.1.11! root 2015: case i_BFFFO:
1.1.1.3 root 2016: printf ("\t{ uae_u32 mask = 1 << (width-1);\n");
2017: printf ("\twhile (mask) { if (tmp & mask) break; mask >>= 1; offset++; }}\n");
2018: printf ("\tm68k_dreg(regs, (extra >> 12) & 7) = offset;\n");
2019: break;
1.1.1.11! root 2020: case i_BFSET:
1.1.1.3 root 2021: printf ("\ttmp = 0xffffffff;\n");
2022: break;
1.1.1.11! root 2023: case i_BFINS:
1.1.1.3 root 2024: printf ("\ttmp = m68k_dreg(regs, (extra >> 12) & 7);\n");
2025: break;
1.1.1.11! root 2026: default:
1.1.1.3 root 2027: break;
1.1 root 2028: }
1.1.1.7 root 2029: if (curi->mnemo == i_BFCHG
2030: || curi->mnemo == i_BFCLR
2031: || curi->mnemo == i_BFSET
2032: || curi->mnemo == i_BFINS)
1.1.1.11! root 2033: {
! 2034: printf ("\ttmp <<= (32 - width);\n");
! 2035: if (curi->dmode == Dreg) {
! 2036: printf ("\tm68k_dreg(regs, dstreg) = (m68k_dreg(regs, dstreg) & ((offset & 0x1f) == 0 ? 0 :\n");
! 2037: printf ("\t\t(0xffffffff << (32 - (offset & 0x1f))))) |\n");
! 2038: printf ("\t\t(tmp >> (offset & 0x1f)) |\n");
! 2039: printf ("\t\t(((offset & 0x1f) + width) >= 32 ? 0 :\n");
! 2040: printf (" (m68k_dreg(regs, dstreg) & ((uae_u32)0xffffffff >> ((offset & 0x1f) + width))));\n");
! 2041: } else {
! 2042: printf ("\tbf0 = (bf0 & (0xff000000 << (8 - (offset & 7)))) |\n");
! 2043: printf ("\t\t(tmp >> (offset & 7)) |\n");
! 2044: printf ("\t\t(((offset & 7) + width) >= 32 ? 0 :\n");
! 2045: printf ("\t\t (bf0 & ((uae_u32)0xffffffff >> ((offset & 7) + width))));\n");
! 2046: printf ("\tput_long(dsta,bf0 );\n");
! 2047: printf ("\tif (((offset & 7) + width) > 32) {\n");
! 2048: printf ("\t\tbf1 = (bf1 & (0xff >> (width - 32 + (offset & 7)))) |\n");
! 2049: printf ("\t\t\t(tmp << (8 - (offset & 7)));\n");
! 2050: printf ("\t\tput_byte(dsta+4,bf1);\n");
! 2051: printf ("\t}\n");
! 2052: }
1.1.1.5 root 2053: }
1.1 root 2054: break;
1.1.1.11! root 2055: case i_PACK:
1.1.1.7 root 2056: if (curi->smode == Dreg) {
1.1.1.5 root 2057: printf ("\tuae_u16 val = m68k_dreg(regs, srcreg) + %s;\n", gen_nextiword ());
1.1.1.3 root 2058: printf ("\tm68k_dreg(regs, dstreg) = (m68k_dreg(regs, dstreg) & 0xffffff00) | ((val >> 4) & 0xf0) | (val & 0xf);\n");
2059: } else {
2060: printf ("\tuae_u16 val;\n");
2061: printf ("\tm68k_areg(regs, srcreg) -= areg_byteinc[srcreg];\n");
2062: printf ("\tval = (uae_u16)get_byte(m68k_areg(regs, srcreg));\n");
2063: printf ("\tm68k_areg(regs, srcreg) -= areg_byteinc[srcreg];\n");
1.1.1.5 root 2064: printf ("\tval = (val | ((uae_u16)get_byte(m68k_areg(regs, srcreg)) << 8)) + %s;\n", gen_nextiword ());
1.1.1.3 root 2065: printf ("\tm68k_areg(regs, dstreg) -= areg_byteinc[dstreg];\n");
2066: printf ("\tput_byte(m68k_areg(regs, dstreg),((val >> 4) & 0xf0) | (val & 0xf));\n");
1.1 root 2067: }
2068: break;
1.1.1.11! root 2069: case i_UNPK:
1.1.1.7 root 2070: if (curi->smode == Dreg) {
1.1.1.3 root 2071: printf ("\tuae_u16 val = m68k_dreg(regs, srcreg);\n");
1.1.1.5 root 2072: printf ("\tval = (((val << 4) & 0xf00) | (val & 0xf)) + %s;\n", gen_nextiword ());
1.1.1.3 root 2073: printf ("\tm68k_dreg(regs, dstreg) = (m68k_dreg(regs, dstreg) & 0xffff0000) | (val & 0xffff);\n");
2074: } else {
2075: printf ("\tuae_u16 val;\n");
2076: printf ("\tm68k_areg(regs, srcreg) -= areg_byteinc[srcreg];\n");
2077: printf ("\tval = (uae_u16)get_byte(m68k_areg(regs, srcreg));\n");
1.1.1.5 root 2078: printf ("\tval = (((val << 4) & 0xf00) | (val & 0xf)) + %s;\n", gen_nextiword ());
1.1.1.3 root 2079: printf ("\tm68k_areg(regs, dstreg) -= areg_byteinc[dstreg];\n");
2080: printf ("\tput_byte(m68k_areg(regs, dstreg),val);\n");
2081: printf ("\tm68k_areg(regs, dstreg) -= areg_byteinc[dstreg];\n");
2082: printf ("\tput_byte(m68k_areg(regs, dstreg),val >> 8);\n");
1.1 root 2083: }
2084: break;
1.1.1.11! root 2085: case i_TAS:
1.1.1.7 root 2086: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
2087: genflags (flag_logical, curi->size, "src", "", "");
1.1.1.3 root 2088: printf ("\tsrc |= 0x80;\n");
1.1.1.7 root 2089: genastore ("src", curi->smode, "srcreg", curi->size, "src");
1.1 root 2090: break;
1.1.1.11! root 2091: case i_FPP:
1.1.1.7 root 2092: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.5 root 2093: sync_m68k_pc ();
1.1.1.3 root 2094: printf ("\tfpp_opp(opcode,extra);\n");
1.1 root 2095: break;
1.1.1.11! root 2096: case i_FDBcc:
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 ("\tfdbcc_opp(opcode,extra);\n");
1.1 root 2100: break;
1.1.1.11! root 2101: case i_FScc:
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 ("\tfscc_opp(opcode,extra);\n");
1.1 root 2105: break;
1.1.1.11! root 2106: case i_FTRAPcc:
1.1.1.5 root 2107: sync_m68k_pc ();
2108: start_brace ();
1.1.1.3 root 2109: printf ("\tuaecptr oldpc = m68k_getpc();\n");
1.1.1.7 root 2110: if (curi->smode != am_unknown && curi->smode != am_illg)
2111: genamode (curi->smode, "srcreg", curi->size, "dummy", 1, 0);
1.1.1.5 root 2112: sync_m68k_pc ();
1.1.1.3 root 2113: printf ("\tftrapcc_opp(opcode,oldpc);\n");
1.1 root 2114: break;
1.1.1.11! root 2115: case i_FBcc:
1.1.1.5 root 2116: sync_m68k_pc ();
2117: start_brace ();
1.1.1.3 root 2118: printf ("\tuaecptr pc = m68k_getpc();\n");
1.1.1.7 root 2119: genamode (curi->dmode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.5 root 2120: sync_m68k_pc ();
1.1.1.3 root 2121: printf ("\tfbcc_opp(opcode,pc,extra);\n");
1.1 root 2122: break;
1.1.1.11! root 2123: case i_FSAVE:
1.1.1.5 root 2124: sync_m68k_pc ();
1.1.1.3 root 2125: printf ("\tfsave_opp(opcode);\n");
1.1 root 2126: break;
1.1.1.11! root 2127: case i_FRESTORE:
1.1.1.5 root 2128: sync_m68k_pc ();
1.1.1.3 root 2129: printf ("\tfrestore_opp(opcode);\n");
1.1 root 2130: break;
1.1.1.11! root 2131: case i_MMUOP:
1.1.1.7 root 2132: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
1.1.1.5 root 2133: sync_m68k_pc ();
1.1.1.3 root 2134: printf ("\tmmu_op(opcode,extra);\n");
1.1 root 2135: break;
1.1.1.11! root 2136: default:
1.1.1.5 root 2137: abort ();
1.1 root 2138: break;
1.1.1.5 root 2139: }
1.1 root 2140: finish_braces ();
1.1.1.3 root 2141: sync_m68k_pc ();
1.1 root 2142: }
2143:
1.1.1.5 root 2144: static void generate_includes (FILE * f)
1.1.1.3 root 2145: {
2146: fprintf (f, "#include \"sysconfig.h\"\n");
2147: fprintf (f, "#include \"sysdeps.h\"\n");
2148: fprintf (f, "#include \"config.h\"\n");
2149: fprintf (f, "#include \"options.h\"\n");
2150: fprintf (f, "#include \"memory.h\"\n");
2151: fprintf (f, "#include \"custom.h\"\n");
2152: fprintf (f, "#include \"readcpu.h\"\n");
2153: fprintf (f, "#include \"newcpu.h\"\n");
2154: fprintf (f, "#include \"compiler.h\"\n");
2155: fprintf (f, "#include \"cputbl.h\"\n");
2156: }
2157:
2158: static int postfix;
2159:
2160: static void generate_one_opcode (int rp)
1.1 root 2161: {
2162: int i;
1.1.1.3 root 2163: uae_u16 smsk, dmsk;
2164: long int opcode = opcode_map[rp];
1.1 root 2165:
1.1.1.3 root 2166: if (table68k[opcode].mnemo == i_ILLG
2167: || table68k[opcode].clev > cpu_level)
2168: return;
1.1 root 2169:
1.1.1.5 root 2170: for (i = 0; lookuptab[i].name[0]; i++) {
1.1.1.3 root 2171: if (table68k[opcode].mnemo == lookuptab[i].mnemo)
2172: break;
2173: }
1.1 root 2174:
1.1.1.3 root 2175: if (table68k[opcode].handler != -1)
2176: return;
1.1 root 2177:
1.1.1.3 root 2178: if (opcode_next_clev[rp] != cpu_level) {
2179: fprintf (stblfile, "{ op_%lx_%d, 0, %ld }, /* %s */\n", opcode, opcode_last_postfix[rp],
2180: opcode, lookuptab[i].name);
2181: return;
2182: }
2183: fprintf (stblfile, "{ op_%lx_%d, 0, %ld }, /* %s */\n", opcode, postfix, opcode, lookuptab[i].name);
2184: fprintf (headerfile, "extern cpuop_func op_%lx_%d;\n", opcode, postfix);
1.1.1.5 root 2185: printf ("unsigned long REGPARAM2 op_%lx_%d(uae_u32 opcode) /* %s */\n{\n", opcode, postfix, lookuptab[i].name);
1.1.1.3 root 2186:
2187: switch (table68k[opcode].stype) {
2188: case 0: smsk = 7; break;
2189: case 1: smsk = 255; break;
2190: case 2: smsk = 15; break;
2191: case 3: smsk = 7; break;
2192: case 4: smsk = 7; break;
2193: case 5: smsk = 63; break;
1.1.1.5 root 2194: default: abort ();
1.1.1.3 root 2195: }
2196: dmsk = 7;
2197:
2198: next_cpu_level = -1;
2199: if (table68k[opcode].suse
1.1.1.5 root 2200: && table68k[opcode].smode != imm && table68k[opcode].smode != imm0
1.1.1.3 root 2201: && table68k[opcode].smode != imm1 && table68k[opcode].smode != imm2
2202: && table68k[opcode].smode != absw && table68k[opcode].smode != absl
2203: && table68k[opcode].smode != PC8r && table68k[opcode].smode != PC16)
2204: {
2205: if (table68k[opcode].spos == -1) {
1.1.1.5 root 2206: if (((int) table68k[opcode].sreg) >= 128)
2207: printf ("\tuae_u32 srcreg = (uae_s32)(uae_s8)%d;\n", (int) table68k[opcode].sreg);
1.1.1.3 root 2208: else
1.1.1.5 root 2209: printf ("\tuae_u32 srcreg = %d;\n", (int) table68k[opcode].sreg);
1.1.1.3 root 2210: } else {
2211: char source[100];
1.1.1.6 root 2212: int pos = table68k[opcode].spos;
1.1.1.5 root 2213:
1.1.1.6 root 2214: #if 0
1.1.1.5 root 2215: /* Check that we can do the little endian optimization safely. */
1.1.1.6 root 2216: if (pos < 8 && (smsk >> (8 - pos)) != 0)
1.1.1.5 root 2217: abort ();
1.1.1.6 root 2218: #endif
2219: if (pos)
2220: sprintf (source, "((opcode >> %d) & %d)", pos, smsk);
1.1.1.3 root 2221: else
1.1.1.5 root 2222: sprintf (source, "(opcode & %d)", smsk);
2223:
1.1.1.3 root 2224: if (table68k[opcode].stype == 3)
2225: printf ("\tuae_u32 srcreg = imm8_table[%s];\n", source);
2226: else if (table68k[opcode].stype == 1)
2227: printf ("\tuae_u32 srcreg = (uae_s32)(uae_s8)%s;\n", source);
2228: else
2229: printf ("\tuae_u32 srcreg = %s;\n", source);
1.1 root 2230: }
1.1.1.3 root 2231: }
2232: if (table68k[opcode].duse
2233: /* Yes, the dmode can be imm, in case of LINK or DBcc */
1.1.1.5 root 2234: && table68k[opcode].dmode != imm && table68k[opcode].dmode != imm0
1.1.1.3 root 2235: && table68k[opcode].dmode != imm1 && table68k[opcode].dmode != imm2
1.1.1.5 root 2236: && table68k[opcode].dmode != absw && table68k[opcode].dmode != absl)
2237: {
1.1.1.3 root 2238: if (table68k[opcode].dpos == -1) {
1.1.1.5 root 2239: if (((int) table68k[opcode].dreg) >= 128)
2240: printf ("\tuae_u32 dstreg = (uae_s32)(uae_s8)%d;\n", (int) table68k[opcode].dreg);
1.1.1.3 root 2241: else
1.1.1.5 root 2242: printf ("\tuae_u32 dstreg = %d;\n", (int) table68k[opcode].dreg);
1.1.1.3 root 2243: } else {
1.1.1.5 root 2244: int pos = table68k[opcode].dpos;
1.1.1.6 root 2245: #if 0
1.1.1.5 root 2246: /* Check that we can do the little endian optimization safely. */
1.1.1.6 root 2247: if (pos < 8 && (dmsk >> (8 - pos)) != 0)
1.1.1.5 root 2248: abort ();
1.1.1.6 root 2249: #endif
1.1.1.5 root 2250: if (pos)
1.1.1.3 root 2251: printf ("\tuae_u32 dstreg = (opcode >> %d) & %d;\n",
1.1.1.5 root 2252: pos, dmsk);
1.1.1.3 root 2253: else
2254: printf ("\tuae_u32 dstreg = opcode & %d;\n", dmsk);
1.1 root 2255: }
2256: }
1.1.1.5 root 2257: need_endlabel = 0;
1.1.1.3 root 2258: endlabelno++;
2259: sprintf (endlabelstr, "endlabel%d", endlabelno);
2260: gen_opcode (opcode);
1.1.1.5 root 2261: if (need_endlabel)
1.1.1.6 root 2262: printf ("%s: ;\n", endlabelstr);
1.1.1.11! root 2263: printf ("return %d;\n", insn_n_cycles / 2);
1.1.1.3 root 2264: printf ("}\n");
2265: opcode_next_clev[rp] = next_cpu_level;
2266: opcode_last_postfix[rp] = postfix;
1.1 root 2267: }
2268:
1.1.1.3 root 2269: static void generate_func (void)
1.1 root 2270: {
1.1.1.5 root 2271: int i, j, rp;
1.1 root 2272:
1.1.1.3 root 2273: using_prefetch = 0;
2274: using_exception_3 = 0;
2275: for (i = 0; i < 5; i++) {
2276: cpu_level = 3 - i;
2277: if (i == 4) {
2278: cpu_level = 0;
2279: using_prefetch = 1;
2280: using_exception_3 = 1;
2281: for (rp = 0; rp < nr_cpuop_funcs; rp++)
2282: opcode_next_clev[rp] = 0;
2283: }
2284: postfix = i;
2285: fprintf (stblfile, "struct cputbl op_smalltbl_%d[] = {\n", postfix);
2286:
1.1.1.5 root 2287: /* sam: this is for people with low memory (eg. me :)) */
2288: printf ("\n"
2289: "#if !defined(PART_1) && !defined(PART_2) && "
2290: "!defined(PART_3) && !defined(PART_4) && "
2291: "!defined(PART_5) && !defined(PART_6) && "
2292: "!defined(PART_7) && !defined(PART_8)"
2293: "\n"
2294: "#define PART_1 1\n"
2295: "#define PART_2 1\n"
2296: "#define PART_3 1\n"
2297: "#define PART_4 1\n"
2298: "#define PART_5 1\n"
2299: "#define PART_6 1\n"
2300: "#define PART_7 1\n"
2301: "#define PART_8 1\n"
2302: "#endif\n\n");
2303:
2304: rp = 0;
2305: for(j=1;j<=8;++j) {
2306: int k = (j*nr_cpuop_funcs)/8;
2307: printf ("#ifdef PART_%d\n",j);
2308: for (; rp < k; rp++)
2309: generate_one_opcode (rp);
2310: printf ("#endif\n\n");
2311: }
2312:
1.1.1.3 root 2313: fprintf (stblfile, "{ 0, 0, 0 }};\n");
1.1 root 2314: }
2315:
2316: }
2317:
1.1.1.3 root 2318: int main (int argc, char **argv)
1.1.1.5 root 2319: {
1.1 root 2320: read_table68k ();
2321: do_merges ();
1.1.1.3 root 2322:
1.1.1.5 root 2323: opcode_map = (int *) xmalloc (sizeof (int) * nr_cpuop_funcs);
2324: opcode_last_postfix = (int *) xmalloc (sizeof (int) * nr_cpuop_funcs);
2325: opcode_next_clev = (int *) xmalloc (sizeof (int) * nr_cpuop_funcs);
2326: counts = (unsigned long *) xmalloc (65536 * sizeof (unsigned long));
2327: read_counts ();
1.1.1.3 root 2328:
2329: /* It would be a lot nicer to put all in one file (we'd also get rid of
2330: * cputbl.h that way), but cpuopti can't cope. That could be fixed, but
2331: * I don't dare to touch the 68k version. */
1.1.1.5 root 2332:
1.1.1.3 root 2333: headerfile = fopen ("cputbl.h", "wb");
2334: stblfile = fopen ("cpustbl.c", "wb");
2335: freopen ("cpuemu.c", "wb", stdout);
2336:
2337: generate_includes (stdout);
2338: generate_includes (stblfile);
2339:
2340: generate_func ();
2341:
2342: free (table68k);
1.1 root 2343: return 0;
2344: }
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.