| 1 |
/* |
| 2 |
* compiler/gencomp.c - MC680x0 compilation generator |
| 3 |
* |
| 4 |
* Based on work Copyright 1995, 1996 Bernd Schmidt |
| 5 |
* Changes for UAE-JIT Copyright 2000 Bernd Meyer |
| 6 |
* |
| 7 |
* Adaptation for Basilisk II and improvements, copyright 2000-2002 |
| 8 |
* Gwenole Beauchesne |
| 9 |
* |
| 10 |
* Basilisk II (C) 1997-2002 Christian Bauer |
| 11 |
* |
| 12 |
* This program is free software; you can redistribute it and/or modify |
| 13 |
* it under the terms of the GNU General Public License as published by |
| 14 |
* the Free Software Foundation; either version 2 of the License, or |
| 15 |
* (at your option) any later version. |
| 16 |
* |
| 17 |
* This program is distributed in the hope that it will be useful, |
| 18 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 |
* GNU General Public License for more details. |
| 21 |
* |
| 22 |
* You should have received a copy of the GNU General Public License |
| 23 |
* along with this program; if not, write to the Free Software |
| 24 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 25 |
*/ |
| 26 |
|
| 27 |
#include <stdio.h> |
| 28 |
#include <stdlib.h> |
| 29 |
#include <stdarg.h> |
| 30 |
#include <string.h> |
| 31 |
#include <ctype.h> |
| 32 |
#include "sysdeps.h" |
| 33 |
#include "readcpu.h" |
| 34 |
|
| 35 |
#define BOOL_TYPE "int" |
| 36 |
#define failure global_failure=1 |
| 37 |
#define FAILURE global_failure=1 |
| 38 |
#define isjump global_isjump=1 |
| 39 |
#define is_const_jump global_iscjump=1; |
| 40 |
#define isaddx global_isaddx=1 |
| 41 |
#define uses_cmov global_cmov=1 |
| 42 |
#define mayfail global_mayfail=1 |
| 43 |
#define uses_fpu global_fpu=1 |
| 44 |
#define uses_setzflg global_setzflg=1 |
| 45 |
|
| 46 |
int hack_opcode; |
| 47 |
|
| 48 |
static int global_failure; |
| 49 |
static int global_isjump; |
| 50 |
static int global_iscjump; |
| 51 |
static int global_isaddx; |
| 52 |
static int global_cmov; |
| 53 |
static int long_opcode; |
| 54 |
static int global_mayfail; |
| 55 |
static int global_fpu; |
| 56 |
static int global_setzflg; |
| 57 |
|
| 58 |
static char endstr[1000]; |
| 59 |
static char lines[100000]; |
| 60 |
static int comp_index=0; |
| 61 |
|
| 62 |
static int cond_codes_x86[]={-1,-1,7,6,3,2,5,4,-1,-1,9,8,13,12,15,14}; |
| 63 |
|
| 64 |
static void comprintf(const char* format, ...) |
| 65 |
{ |
| 66 |
va_list args; |
| 67 |
|
| 68 |
va_start(args,format); |
| 69 |
comp_index+=vsprintf(lines+comp_index,format,args); |
| 70 |
} |
| 71 |
|
| 72 |
static void com_discard(void) |
| 73 |
{ |
| 74 |
comp_index=0; |
| 75 |
} |
| 76 |
|
| 77 |
static void com_flush(void) |
| 78 |
{ |
| 79 |
int i; |
| 80 |
for (i=0;i<comp_index;i++) |
| 81 |
putchar(lines[i]); |
| 82 |
com_discard(); |
| 83 |
} |
| 84 |
|
| 85 |
|
| 86 |
static FILE *headerfile; |
| 87 |
static FILE *stblfile; |
| 88 |
|
| 89 |
static int using_prefetch; |
| 90 |
static int using_exception_3; |
| 91 |
static int cpu_level; |
| 92 |
static int noflags; |
| 93 |
|
| 94 |
/* For the current opcode, the next lower level that will have different code. |
| 95 |
* Initialized to -1 for each opcode. If it remains unchanged, indicates we |
| 96 |
* are done with that opcode. */ |
| 97 |
static int next_cpu_level; |
| 98 |
|
| 99 |
static int *opcode_map; |
| 100 |
static int *opcode_next_clev; |
| 101 |
static int *opcode_last_postfix; |
| 102 |
static unsigned long *counts; |
| 103 |
|
| 104 |
static void |
| 105 |
read_counts (void) |
| 106 |
{ |
| 107 |
FILE *file; |
| 108 |
unsigned long opcode, count, total; |
| 109 |
char name[20]; |
| 110 |
int nr = 0; |
| 111 |
memset (counts, 0, 65536 * sizeof *counts); |
| 112 |
|
| 113 |
file = fopen ("frequent.68k", "r"); |
| 114 |
if (file) |
| 115 |
{ |
| 116 |
fscanf (file, "Total: %lu\n", &total); |
| 117 |
while (fscanf (file, "%lx: %lu %s\n", &opcode, &count, name) == 3) |
| 118 |
{ |
| 119 |
opcode_next_clev[nr] = 4; |
| 120 |
opcode_last_postfix[nr] = -1; |
| 121 |
opcode_map[nr++] = opcode; |
| 122 |
counts[opcode] = count; |
| 123 |
} |
| 124 |
fclose (file); |
| 125 |
} |
| 126 |
if (nr == nr_cpuop_funcs) |
| 127 |
return; |
| 128 |
for (opcode = 0; opcode < 0x10000; opcode++) |
| 129 |
{ |
| 130 |
if (table68k[opcode].handler == -1 && table68k[opcode].mnemo != i_ILLG |
| 131 |
&& counts[opcode] == 0) |
| 132 |
{ |
| 133 |
opcode_next_clev[nr] = 4; |
| 134 |
opcode_last_postfix[nr] = -1; |
| 135 |
opcode_map[nr++] = opcode; |
| 136 |
counts[opcode] = count; |
| 137 |
} |
| 138 |
} |
| 139 |
if (nr != nr_cpuop_funcs) |
| 140 |
abort (); |
| 141 |
} |
| 142 |
|
| 143 |
static int n_braces = 0; |
| 144 |
static int insn_n_cycles; |
| 145 |
|
| 146 |
static void |
| 147 |
start_brace (void) |
| 148 |
{ |
| 149 |
n_braces++; |
| 150 |
comprintf ("{"); |
| 151 |
} |
| 152 |
|
| 153 |
static void |
| 154 |
close_brace (void) |
| 155 |
{ |
| 156 |
assert (n_braces > 0); |
| 157 |
n_braces--; |
| 158 |
comprintf ("}"); |
| 159 |
} |
| 160 |
|
| 161 |
static void |
| 162 |
finish_braces (void) |
| 163 |
{ |
| 164 |
while (n_braces > 0) |
| 165 |
close_brace (); |
| 166 |
} |
| 167 |
|
| 168 |
static void |
| 169 |
pop_braces (int to) |
| 170 |
{ |
| 171 |
while (n_braces > to) |
| 172 |
close_brace (); |
| 173 |
} |
| 174 |
|
| 175 |
static int |
| 176 |
bit_size (int size) |
| 177 |
{ |
| 178 |
switch (size) |
| 179 |
{ |
| 180 |
case sz_byte: |
| 181 |
return 8; |
| 182 |
case sz_word: |
| 183 |
return 16; |
| 184 |
case sz_long: |
| 185 |
return 32; |
| 186 |
default: |
| 187 |
abort (); |
| 188 |
} |
| 189 |
return 0; |
| 190 |
} |
| 191 |
|
| 192 |
static const char * |
| 193 |
bit_mask (int size) |
| 194 |
{ |
| 195 |
switch (size) |
| 196 |
{ |
| 197 |
case sz_byte: |
| 198 |
return "0xff"; |
| 199 |
case sz_word: |
| 200 |
return "0xffff"; |
| 201 |
case sz_long: |
| 202 |
return "0xffffffff"; |
| 203 |
default: |
| 204 |
abort (); |
| 205 |
} |
| 206 |
return 0; |
| 207 |
} |
| 208 |
|
| 209 |
static __inline__ void gen_update_next_handler(void) |
| 210 |
{ |
| 211 |
return; /* Can anything clever be done here? */ |
| 212 |
} |
| 213 |
|
| 214 |
static void gen_writebyte(char* address, char* source) |
| 215 |
{ |
| 216 |
comprintf("\twritebyte(%s,%s,scratchie);\n",address,source); |
| 217 |
} |
| 218 |
|
| 219 |
static void gen_writeword(char* address, char* source) |
| 220 |
{ |
| 221 |
comprintf("\twriteword(%s,%s,scratchie);\n",address,source); |
| 222 |
} |
| 223 |
|
| 224 |
static void gen_writelong(char* address, char* source) |
| 225 |
{ |
| 226 |
comprintf("\twritelong(%s,%s,scratchie);\n",address,source); |
| 227 |
} |
| 228 |
|
| 229 |
static void gen_readbyte(char* address, char* dest) |
| 230 |
{ |
| 231 |
comprintf("\treadbyte(%s,%s,scratchie);\n",address,dest); |
| 232 |
} |
| 233 |
|
| 234 |
static void gen_readword(char* address, char* dest) |
| 235 |
{ |
| 236 |
comprintf("\treadword(%s,%s,scratchie);\n",address,dest); |
| 237 |
} |
| 238 |
|
| 239 |
static void gen_readlong(char* address, char* dest) |
| 240 |
{ |
| 241 |
comprintf("\treadlong(%s,%s,scratchie);\n",address,dest); |
| 242 |
} |
| 243 |
|
| 244 |
|
| 245 |
|
| 246 |
static const char * |
| 247 |
gen_nextilong (void) |
| 248 |
{ |
| 249 |
static char buffer[80]; |
| 250 |
|
| 251 |
sprintf (buffer, "comp_get_ilong((m68k_pc_offset+=4)-4)"); |
| 252 |
insn_n_cycles += 4; |
| 253 |
|
| 254 |
long_opcode=1; |
| 255 |
return buffer; |
| 256 |
} |
| 257 |
|
| 258 |
static const char * |
| 259 |
gen_nextiword (void) |
| 260 |
{ |
| 261 |
static char buffer[80]; |
| 262 |
|
| 263 |
sprintf (buffer, "comp_get_iword((m68k_pc_offset+=2)-2)"); |
| 264 |
insn_n_cycles+=2; |
| 265 |
|
| 266 |
long_opcode=1; |
| 267 |
return buffer; |
| 268 |
} |
| 269 |
|
| 270 |
static const char * |
| 271 |
gen_nextibyte (void) |
| 272 |
{ |
| 273 |
static char buffer[80]; |
| 274 |
|
| 275 |
sprintf (buffer, "comp_get_ibyte((m68k_pc_offset+=2)-2)"); |
| 276 |
insn_n_cycles += 2; |
| 277 |
|
| 278 |
long_opcode=1; |
| 279 |
return buffer; |
| 280 |
} |
| 281 |
|
| 282 |
static void |
| 283 |
swap_opcode (void) |
| 284 |
{ |
| 285 |
comprintf("#ifdef HAVE_GET_WORD_UNSWAPPED\n"); |
| 286 |
comprintf("\topcode = do_byteswap_16(opcode);\n"); |
| 287 |
comprintf("#endif\n"); |
| 288 |
} |
| 289 |
|
| 290 |
static void |
| 291 |
sync_m68k_pc (void) |
| 292 |
{ |
| 293 |
comprintf("\t if (m68k_pc_offset>100) sync_m68k_pc();\n"); |
| 294 |
} |
| 295 |
|
| 296 |
|
| 297 |
/* getv == 1: fetch data; getv != 0: check for odd address. If movem != 0, |
| 298 |
* the calling routine handles Apdi and Aipi modes. |
| 299 |
* gb-- movem == 2 means the same thing but for a MOVE16 instruction */ |
| 300 |
static void |
| 301 |
genamode (amodes mode, char *reg, wordsizes size, char *name, int getv, int movem) |
| 302 |
{ |
| 303 |
start_brace (); |
| 304 |
switch (mode) |
| 305 |
{ |
| 306 |
case Dreg: /* Do we need to check dodgy here? */ |
| 307 |
if (movem) |
| 308 |
abort (); |
| 309 |
if (getv == 1 || getv==2) { |
| 310 |
/* We generate the variable even for getv==2, so we can use |
| 311 |
it as a destination for MOVE */ |
| 312 |
comprintf ("\tint %s=%s;\n",name,reg); |
| 313 |
} |
| 314 |
return; |
| 315 |
|
| 316 |
case Areg: |
| 317 |
if (movem) |
| 318 |
abort (); |
| 319 |
if (getv == 1 || getv==2) { |
| 320 |
/* see above */ |
| 321 |
comprintf ("\tint %s=dodgy?scratchie++:%s+8;\n",name,reg); |
| 322 |
if (getv==1) { |
| 323 |
comprintf ("\tif (dodgy) \n"); |
| 324 |
comprintf ("\t\tmov_l_rr(%s,%s+8);\n",name, reg); |
| 325 |
} |
| 326 |
} |
| 327 |
return; |
| 328 |
|
| 329 |
case Aind: |
| 330 |
comprintf ("\tint %sa=dodgy?scratchie++:%s+8;\n",name,reg); |
| 331 |
comprintf ("\tif (dodgy) \n"); |
| 332 |
comprintf ("\t\tmov_l_rr(%sa,%s+8);\n",name, reg); |
| 333 |
break; |
| 334 |
case Aipi: |
| 335 |
comprintf ("\tint %sa=scratchie++;\n",name,reg); |
| 336 |
comprintf ("\tmov_l_rr(%sa,%s+8);\n",name, reg); |
| 337 |
break; |
| 338 |
case Apdi: |
| 339 |
switch (size) |
| 340 |
{ |
| 341 |
case sz_byte: |
| 342 |
if (movem) { |
| 343 |
comprintf ("\tint %sa=dodgy?scratchie++:%s+8;\n",name,reg); |
| 344 |
comprintf ("\tif (dodgy) \n"); |
| 345 |
comprintf("\tmov_l_rr(%sa,8+%s);\n",name,reg); |
| 346 |
} |
| 347 |
else { |
| 348 |
start_brace(); |
| 349 |
comprintf ("\tint %sa=dodgy?scratchie++:%s+8;\n",name,reg); |
| 350 |
comprintf("\tlea_l_brr(%s+8,%s+8,(uae_s32)-areg_byteinc[%s]);\n",reg,reg,reg); |
| 351 |
comprintf ("\tif (dodgy) \n"); |
| 352 |
comprintf("\tmov_l_rr(%sa,8+%s);\n",name,reg); |
| 353 |
} |
| 354 |
break; |
| 355 |
case sz_word: |
| 356 |
if (movem) { |
| 357 |
comprintf ("\tint %sa=dodgy?scratchie++:%s+8;\n",name,reg); |
| 358 |
comprintf ("\tif (dodgy) \n"); |
| 359 |
comprintf("\tmov_l_rr(%sa,8+%s);\n",name,reg); |
| 360 |
} |
| 361 |
else { |
| 362 |
start_brace(); |
| 363 |
comprintf ("\tint %sa=dodgy?scratchie++:%s+8;\n",name,reg); |
| 364 |
comprintf("\tlea_l_brr(%s+8,%s+8,-2);\n",reg,reg); |
| 365 |
comprintf ("\tif (dodgy) \n"); |
| 366 |
comprintf("\tmov_l_rr(%sa,8+%s);\n",name,reg); |
| 367 |
} |
| 368 |
break; |
| 369 |
case sz_long: |
| 370 |
if (movem) { |
| 371 |
comprintf ("\tint %sa=dodgy?scratchie++:%s+8;\n",name,reg); |
| 372 |
comprintf ("\tif (dodgy) \n"); |
| 373 |
comprintf("\tmov_l_rr(%sa,8+%s);\n",name,reg); |
| 374 |
} |
| 375 |
else { |
| 376 |
start_brace(); |
| 377 |
comprintf ("\tint %sa=dodgy?scratchie++:%s+8;\n",name,reg); |
| 378 |
comprintf("\tlea_l_brr(%s+8,%s+8,-4);\n",reg,reg); |
| 379 |
comprintf ("\tif (dodgy) \n"); |
| 380 |
comprintf("\tmov_l_rr(%sa,8+%s);\n",name,reg); |
| 381 |
} |
| 382 |
break; |
| 383 |
default: |
| 384 |
abort (); |
| 385 |
} |
| 386 |
break; |
| 387 |
case Ad16: |
| 388 |
comprintf("\tint %sa=scratchie++;\n",name); |
| 389 |
comprintf("\tmov_l_rr(%sa,8+%s);\n",name,reg); |
| 390 |
comprintf("\tlea_l_brr(%sa,%sa,(uae_s32)(uae_s16)%s);\n",name,name,gen_nextiword()); |
| 391 |
break; |
| 392 |
case Ad8r: |
| 393 |
comprintf("\tint %sa=scratchie++;\n",name); |
| 394 |
comprintf("\tcalc_disp_ea_020(%s+8,%s,%sa,scratchie);\n", |
| 395 |
reg,gen_nextiword(),name); |
| 396 |
break; |
| 397 |
|
| 398 |
case PC16: |
| 399 |
comprintf("\tint %sa=scratchie++;\n",name); |
| 400 |
comprintf("\tuae_u32 address=start_pc+((char *)comp_pc_p-(char *)start_pc_p)+m68k_pc_offset;\n"); |
| 401 |
comprintf ("\tuae_s32 PC16off = (uae_s32)(uae_s16)%s;\n", gen_nextiword ()); |
| 402 |
comprintf("\tmov_l_ri(%sa,address+PC16off);\n",name); |
| 403 |
break; |
| 404 |
|
| 405 |
case PC8r: |
| 406 |
comprintf("\tint pctmp=scratchie++;\n"); |
| 407 |
comprintf("\tint %sa=scratchie++;\n",name); |
| 408 |
comprintf("\tuae_u32 address=start_pc+((char *)comp_pc_p-(char *)start_pc_p)+m68k_pc_offset;\n"); |
| 409 |
start_brace(); |
| 410 |
comprintf("\tmov_l_ri(pctmp,address);\n"); |
| 411 |
|
| 412 |
comprintf("\tcalc_disp_ea_020(pctmp,%s,%sa,scratchie);\n", |
| 413 |
gen_nextiword(),name); |
| 414 |
break; |
| 415 |
case absw: |
| 416 |
comprintf ("\tint %sa = scratchie++;\n",name); |
| 417 |
comprintf ("\tmov_l_ri(%sa,(uae_s32)(uae_s16)%s);\n", name, gen_nextiword ()); |
| 418 |
break; |
| 419 |
case absl: |
| 420 |
comprintf ("\tint %sa = scratchie++;\n",name); |
| 421 |
comprintf ("\tmov_l_ri(%sa,%s); /* absl */\n", name, gen_nextilong ()); |
| 422 |
break; |
| 423 |
case imm: |
| 424 |
if (getv != 1) |
| 425 |
abort (); |
| 426 |
switch (size) |
| 427 |
{ |
| 428 |
case sz_byte: |
| 429 |
comprintf ("\tint %s = scratchie++;\n",name); |
| 430 |
comprintf ("\tmov_l_ri(%s,(uae_s32)(uae_s8)%s);\n", name, gen_nextibyte ()); |
| 431 |
break; |
| 432 |
case sz_word: |
| 433 |
comprintf ("\tint %s = scratchie++;\n",name); |
| 434 |
comprintf ("\tmov_l_ri(%s,(uae_s32)(uae_s16)%s);\n", name, gen_nextiword ()); |
| 435 |
break; |
| 436 |
case sz_long: |
| 437 |
comprintf ("\tint %s = scratchie++;\n",name); |
| 438 |
comprintf ("\tmov_l_ri(%s,%s);\n", name, gen_nextilong ()); |
| 439 |
break; |
| 440 |
default: |
| 441 |
abort (); |
| 442 |
} |
| 443 |
return; |
| 444 |
case imm0: |
| 445 |
if (getv != 1) |
| 446 |
abort (); |
| 447 |
comprintf ("\tint %s = scratchie++;\n",name); |
| 448 |
comprintf ("\tmov_l_ri(%s,(uae_s32)(uae_s8)%s);\n", name, gen_nextibyte ()); |
| 449 |
return; |
| 450 |
case imm1: |
| 451 |
if (getv != 1) |
| 452 |
abort (); |
| 453 |
comprintf ("\tint %s = scratchie++;\n",name); |
| 454 |
comprintf ("\tmov_l_ri(%s,(uae_s32)(uae_s16)%s);\n", name, gen_nextiword ()); |
| 455 |
return; |
| 456 |
case imm2: |
| 457 |
if (getv != 1) |
| 458 |
abort (); |
| 459 |
comprintf ("\tint %s = scratchie++;\n",name); |
| 460 |
comprintf ("\tmov_l_ri(%s,%s);\n", name, gen_nextilong ()); |
| 461 |
return; |
| 462 |
case immi: |
| 463 |
if (getv != 1) |
| 464 |
abort (); |
| 465 |
comprintf ("\tint %s = scratchie++;\n",name); |
| 466 |
comprintf ("\tmov_l_ri(%s,%s);\n", name, reg); |
| 467 |
return; |
| 468 |
default: |
| 469 |
abort (); |
| 470 |
} |
| 471 |
|
| 472 |
/* We get here for all non-reg non-immediate addressing modes to |
| 473 |
* actually fetch the value. */ |
| 474 |
if (getv == 1) |
| 475 |
{ |
| 476 |
char astring[80]; |
| 477 |
sprintf(astring,"%sa",name); |
| 478 |
switch (size) |
| 479 |
{ |
| 480 |
case sz_byte: |
| 481 |
insn_n_cycles += 2; |
| 482 |
break; |
| 483 |
case sz_word: |
| 484 |
insn_n_cycles += 2; |
| 485 |
break; |
| 486 |
case sz_long: |
| 487 |
insn_n_cycles += 4; |
| 488 |
break; |
| 489 |
default: |
| 490 |
abort (); |
| 491 |
} |
| 492 |
start_brace (); |
| 493 |
comprintf("\tint %s=scratchie++;\n",name); |
| 494 |
switch (size) |
| 495 |
{ |
| 496 |
case sz_byte: |
| 497 |
gen_readbyte(astring,name); |
| 498 |
break; |
| 499 |
case sz_word: |
| 500 |
gen_readword(astring,name); |
| 501 |
break; |
| 502 |
case sz_long: |
| 503 |
gen_readlong(astring,name); |
| 504 |
break; |
| 505 |
default: |
| 506 |
abort (); |
| 507 |
} |
| 508 |
} |
| 509 |
|
| 510 |
/* We now might have to fix up the register for pre-dec or post-inc |
| 511 |
* addressing modes. */ |
| 512 |
if (!movem) { |
| 513 |
char x[160]; |
| 514 |
switch (mode) |
| 515 |
{ |
| 516 |
case Aipi: |
| 517 |
switch (size) |
| 518 |
{ |
| 519 |
case sz_byte: |
| 520 |
comprintf("\tlea_l_brr(%s+8,%s+8,areg_byteinc[%s]);\n",reg,reg,reg); |
| 521 |
break; |
| 522 |
case sz_word: |
| 523 |
comprintf("\tlea_l_brr(%s+8,%s+8,2);\n",reg,reg,reg); |
| 524 |
break; |
| 525 |
case sz_long: |
| 526 |
comprintf("\tlea_l_brr(%s+8,%s+8,4);\n",reg,reg); |
| 527 |
break; |
| 528 |
default: |
| 529 |
abort (); |
| 530 |
} |
| 531 |
break; |
| 532 |
case Apdi: |
| 533 |
break; |
| 534 |
default: |
| 535 |
break; |
| 536 |
} |
| 537 |
} |
| 538 |
} |
| 539 |
|
| 540 |
static void |
| 541 |
genastore (char *from, amodes mode, char *reg, wordsizes size, char *to) |
| 542 |
{ |
| 543 |
switch (mode) |
| 544 |
{ |
| 545 |
case Dreg: |
| 546 |
switch (size) |
| 547 |
{ |
| 548 |
case sz_byte: |
| 549 |
comprintf("\tif(%s!=%s)\n",reg,from); |
| 550 |
comprintf ("\t\tmov_b_rr(%s,%s);\n", reg, from); |
| 551 |
break; |
| 552 |
case sz_word: |
| 553 |
comprintf("\tif(%s!=%s)\n",reg,from); |
| 554 |
comprintf ("\t\tmov_w_rr(%s,%s);\n", reg, from); |
| 555 |
break; |
| 556 |
case sz_long: |
| 557 |
comprintf("\tif(%s!=%s)\n",reg,from); |
| 558 |
comprintf ("\t\tmov_l_rr(%s,%s);\n", reg, from); |
| 559 |
break; |
| 560 |
default: |
| 561 |
abort (); |
| 562 |
} |
| 563 |
break; |
| 564 |
case Areg: |
| 565 |
switch (size) |
| 566 |
{ |
| 567 |
case sz_word: |
| 568 |
comprintf("\tif(%s+8!=%s)\n",reg,from); |
| 569 |
comprintf ("\t\tmov_w_rr(%s+8,%s);\n", reg, from); |
| 570 |
break; |
| 571 |
case sz_long: |
| 572 |
comprintf("\tif(%s+8!=%s)\n",reg,from); |
| 573 |
comprintf ("\t\tmov_l_rr(%s+8,%s);\n", reg, from); |
| 574 |
break; |
| 575 |
default: |
| 576 |
abort (); |
| 577 |
} |
| 578 |
break; |
| 579 |
|
| 580 |
case Apdi: |
| 581 |
case absw: |
| 582 |
case PC16: |
| 583 |
case PC8r: |
| 584 |
case Ad16: |
| 585 |
case Ad8r: |
| 586 |
case Aipi: |
| 587 |
case Aind: |
| 588 |
case absl: |
| 589 |
{ |
| 590 |
char astring[80]; |
| 591 |
sprintf(astring,"%sa",to); |
| 592 |
|
| 593 |
switch (size) |
| 594 |
{ |
| 595 |
case sz_byte: |
| 596 |
insn_n_cycles += 2; |
| 597 |
gen_writebyte(astring,from); |
| 598 |
break; |
| 599 |
case sz_word: |
| 600 |
insn_n_cycles += 2; |
| 601 |
gen_writeword(astring,from); |
| 602 |
break; |
| 603 |
case sz_long: |
| 604 |
insn_n_cycles += 4; |
| 605 |
gen_writelong(astring,from); |
| 606 |
break; |
| 607 |
default: |
| 608 |
abort (); |
| 609 |
} |
| 610 |
} |
| 611 |
break; |
| 612 |
case imm: |
| 613 |
case imm0: |
| 614 |
case imm1: |
| 615 |
case imm2: |
| 616 |
case immi: |
| 617 |
abort (); |
| 618 |
break; |
| 619 |
default: |
| 620 |
abort (); |
| 621 |
} |
| 622 |
} |
| 623 |
|
| 624 |
static void genmov16(uae_u32 opcode, struct instr *curi) |
| 625 |
{ |
| 626 |
comprintf("\tint src=scratchie++;\n"); |
| 627 |
comprintf("\tint dst=scratchie++;\n"); |
| 628 |
|
| 629 |
if ((opcode & 0xfff8) == 0xf620) { |
| 630 |
/* MOVE16 (Ax)+,(Ay)+ */ |
| 631 |
comprintf("\tuae_u16 dstreg=((%s)>>12)&0x07;\n", gen_nextiword()); |
| 632 |
comprintf("\tmov_l_rr(src,8+srcreg);\n"); |
| 633 |
comprintf("\tmov_l_rr(dst,8+dstreg);\n"); |
| 634 |
} |
| 635 |
else { |
| 636 |
/* Other variants */ |
| 637 |
genamode (curi->smode, "srcreg", curi->size, "src", 0, 2); |
| 638 |
genamode (curi->dmode, "dstreg", curi->size, "dst", 0, 2); |
| 639 |
comprintf("\tmov_l_rr(src,srca);\n"); |
| 640 |
comprintf("\tmov_l_rr(dst,dsta);\n"); |
| 641 |
} |
| 642 |
|
| 643 |
/* Align on 16-byte boundaries */ |
| 644 |
comprintf("\tand_l_ri(src,~15);\n"); |
| 645 |
comprintf("\tand_l_ri(dst,~15);\n"); |
| 646 |
|
| 647 |
if ((opcode & 0xfff8) == 0xf620) { |
| 648 |
comprintf("\tif (srcreg != dstreg)\n"); |
| 649 |
comprintf("\tadd_l_ri(srcreg+8,16);\n"); |
| 650 |
comprintf("\tadd_l_ri(dstreg+8,16);\n"); |
| 651 |
} |
| 652 |
else if ((opcode & 0xfff8) == 0xf600) |
| 653 |
comprintf("\tadd_l_ri(srcreg+8,16);\n"); |
| 654 |
else if ((opcode & 0xfff8) == 0xf608) |
| 655 |
comprintf("\tadd_l_ri(dstreg+8,16);\n"); |
| 656 |
|
| 657 |
comprintf("\tint tmp=scratchie;\n"); |
| 658 |
comprintf("\tscratchie+=4;\n"); |
| 659 |
|
| 660 |
comprintf("\tget_n_addr(src,src,scratchie);\n" |
| 661 |
"\tget_n_addr(dst,dst,scratchie);\n" |
| 662 |
"\tmov_l_rR(tmp+0,src,0);\n" |
| 663 |
"\tmov_l_rR(tmp+1,src,4);\n" |
| 664 |
"\tmov_l_rR(tmp+2,src,8);\n" |
| 665 |
"\tmov_l_rR(tmp+3,src,12);\n" |
| 666 |
"\tmov_l_Rr(dst,tmp+0,0);\n" |
| 667 |
"\tforget_about(tmp+0);\n" |
| 668 |
"\tmov_l_Rr(dst,tmp+1,4);\n" |
| 669 |
"\tforget_about(tmp+1);\n" |
| 670 |
"\tmov_l_Rr(dst,tmp+2,8);\n" |
| 671 |
"\tforget_about(tmp+2);\n" |
| 672 |
"\tmov_l_Rr(dst,tmp+3,12);\n"); |
| 673 |
} |
| 674 |
|
| 675 |
static void |
| 676 |
genmovemel (uae_u16 opcode) |
| 677 |
{ |
| 678 |
comprintf ("\tuae_u16 mask = %s;\n", gen_nextiword ()); |
| 679 |
comprintf ("\tint native=scratchie++;\n"); |
| 680 |
comprintf ("\tint i;\n"); |
| 681 |
comprintf ("\tsigned char offset=0;\n"); |
| 682 |
genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1); |
| 683 |
comprintf("\tget_n_addr(srca,native,scratchie);\n"); |
| 684 |
|
| 685 |
comprintf("\tfor (i=0;i<16;i++) {\n" |
| 686 |
"\t\tif ((mask>>i)&1) {\n"); |
| 687 |
switch(table68k[opcode].size) { |
| 688 |
case sz_long: |
| 689 |
comprintf("\t\t\tmov_l_rR(i,native,offset);\n" |
| 690 |
"\t\t\tbswap_32(i);\n" |
| 691 |
"\t\t\toffset+=4;\n"); |
| 692 |
break; |
| 693 |
case sz_word: |
| 694 |
comprintf("\t\t\tmov_w_rR(i,native,offset);\n" |
| 695 |
"\t\t\tbswap_16(i);\n" |
| 696 |
"\t\t\tsign_extend_16_rr(i,i);\n" |
| 697 |
"\t\t\toffset+=2;\n"); |
| 698 |
break; |
| 699 |
default: abort(); |
| 700 |
} |
| 701 |
comprintf("\t\t}\n" |
| 702 |
"\t}"); |
| 703 |
if (table68k[opcode].dmode == Aipi) { |
| 704 |
comprintf("\t\t\tlea_l_brr(8+dstreg,srca,offset);\n"); |
| 705 |
} |
| 706 |
} |
| 707 |
|
| 708 |
|
| 709 |
static void |
| 710 |
genmovemle (uae_u16 opcode) |
| 711 |
{ |
| 712 |
comprintf ("\tuae_u16 mask = %s;\n", gen_nextiword ()); |
| 713 |
comprintf ("\tint native=scratchie++;\n"); |
| 714 |
comprintf ("\tint i;\n"); |
| 715 |
comprintf ("\tint tmp=scratchie++;\n"); |
| 716 |
comprintf ("\tsigned char offset=0;\n"); |
| 717 |
genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1); |
| 718 |
|
| 719 |
comprintf("\tget_n_addr(srca,native,scratchie);\n"); |
| 720 |
|
| 721 |
if (table68k[opcode].dmode!=Apdi) { |
| 722 |
comprintf("\tfor (i=0;i<16;i++) {\n" |
| 723 |
"\t\tif ((mask>>i)&1) {\n"); |
| 724 |
switch(table68k[opcode].size) { |
| 725 |
case sz_long: |
| 726 |
comprintf("\t\t\tmov_l_rr(tmp,i);\n" |
| 727 |
"\t\t\tbswap_32(tmp);\n" |
| 728 |
"\t\t\tmov_l_Rr(native,tmp,offset);\n" |
| 729 |
"\t\t\toffset+=4;\n"); |
| 730 |
break; |
| 731 |
case sz_word: |
| 732 |
comprintf("\t\t\tmov_l_rr(tmp,i);\n" |
| 733 |
"\t\t\tbswap_16(tmp);\n" |
| 734 |
"\t\t\tmov_w_Rr(native,tmp,offset);\n" |
| 735 |
"\t\t\toffset+=2;\n"); |
| 736 |
break; |
| 737 |
default: abort(); |
| 738 |
} |
| 739 |
} |
| 740 |
else { /* Pre-decrement */ |
| 741 |
comprintf("\tfor (i=0;i<16;i++) {\n" |
| 742 |
"\t\tif ((mask>>i)&1) {\n"); |
| 743 |
switch(table68k[opcode].size) { |
| 744 |
case sz_long: |
| 745 |
comprintf("\t\t\toffset-=4;\n" |
| 746 |
"\t\t\tmov_l_rr(tmp,15-i);\n" |
| 747 |
"\t\t\tbswap_32(tmp);\n" |
| 748 |
"\t\t\tmov_l_Rr(native,tmp,offset);\n" |
| 749 |
); |
| 750 |
break; |
| 751 |
case sz_word: |
| 752 |
comprintf("\t\t\toffset-=2;\n" |
| 753 |
"\t\t\tmov_l_rr(tmp,15-i);\n" |
| 754 |
"\t\t\tbswap_16(tmp);\n" |
| 755 |
"\t\t\tmov_w_Rr(native,tmp,offset);\n" |
| 756 |
); |
| 757 |
break; |
| 758 |
default: abort(); |
| 759 |
} |
| 760 |
} |
| 761 |
|
| 762 |
|
| 763 |
comprintf("\t\t}\n" |
| 764 |
"\t}"); |
| 765 |
if (table68k[opcode].dmode == Apdi) { |
| 766 |
comprintf("\t\t\tlea_l_brr(8+dstreg,srca,(uae_s32)offset);\n"); |
| 767 |
} |
| 768 |
} |
| 769 |
|
| 770 |
|
| 771 |
static void |
| 772 |
duplicate_carry (void) |
| 773 |
{ |
| 774 |
comprintf ("\tif (needed_flags&FLAG_X) duplicate_carry();\n"); |
| 775 |
} |
| 776 |
|
| 777 |
typedef enum |
| 778 |
{ |
| 779 |
flag_logical_noclobber, flag_logical, flag_add, flag_sub, flag_cmp, |
| 780 |
flag_addx, flag_subx, flag_zn, flag_av, flag_sv, flag_and, flag_or, |
| 781 |
flag_eor, flag_mov |
| 782 |
} |
| 783 |
flagtypes; |
| 784 |
|
| 785 |
|
| 786 |
static void |
| 787 |
genflags (flagtypes type, wordsizes size, char *value, char *src, char *dst) |
| 788 |
{ |
| 789 |
if (noflags) { |
| 790 |
switch(type) { |
| 791 |
case flag_cmp: |
| 792 |
comprintf("\tdont_care_flags();\n"); |
| 793 |
comprintf("/* Weird --- CMP with noflags ;-) */\n"); |
| 794 |
return; |
| 795 |
case flag_add: |
| 796 |
case flag_sub: |
| 797 |
comprintf("\tdont_care_flags();\n"); |
| 798 |
{ |
| 799 |
char* op; |
| 800 |
switch(type) { |
| 801 |
case flag_add: op="add"; break; |
| 802 |
case flag_sub: op="sub"; break; |
| 803 |
default: abort(); |
| 804 |
} |
| 805 |
switch (size) |
| 806 |
{ |
| 807 |
case sz_byte: |
| 808 |
comprintf("\t%s_b(%s,%s);\n",op,dst,src); |
| 809 |
break; |
| 810 |
case sz_word: |
| 811 |
comprintf("\t%s_w(%s,%s);\n",op,dst,src); |
| 812 |
break; |
| 813 |
case sz_long: |
| 814 |
comprintf("\t%s_l(%s,%s);\n",op,dst,src); |
| 815 |
break; |
| 816 |
} |
| 817 |
return; |
| 818 |
} |
| 819 |
break; |
| 820 |
|
| 821 |
case flag_and: |
| 822 |
comprintf("\tdont_care_flags();\n"); |
| 823 |
switch (size) |
| 824 |
{ |
| 825 |
case sz_byte: |
| 826 |
comprintf("if (kill_rodent(dst)) {\n"); |
| 827 |
comprintf("\tzero_extend_8_rr(scratchie,%s);\n",src); |
| 828 |
comprintf("\tor_l_ri(scratchie,0xffffff00);\n"); |
| 829 |
comprintf("\tand_l(%s,scratchie);\n",dst); |
| 830 |
comprintf("\tforget_about(scratchie);\n"); |
| 831 |
comprintf("\t} else \n" |
| 832 |
"\tand_b(%s,%s);\n",dst,src); |
| 833 |
break; |
| 834 |
case sz_word: |
| 835 |
comprintf("if (kill_rodent(dst)) {\n"); |
| 836 |
comprintf("\tzero_extend_16_rr(scratchie,%s);\n",src); |
| 837 |
comprintf("\tor_l_ri(scratchie,0xffff0000);\n"); |
| 838 |
comprintf("\tand_l(%s,scratchie);\n",dst); |
| 839 |
comprintf("\tforget_about(scratchie);\n"); |
| 840 |
comprintf("\t} else \n" |
| 841 |
"\tand_w(%s,%s);\n",dst,src); |
| 842 |
break; |
| 843 |
case sz_long: |
| 844 |
comprintf("\tand_l(%s,%s);\n",dst,src); |
| 845 |
break; |
| 846 |
} |
| 847 |
return; |
| 848 |
|
| 849 |
case flag_mov: |
| 850 |
comprintf("\tdont_care_flags();\n"); |
| 851 |
switch (size) |
| 852 |
{ |
| 853 |
case sz_byte: |
| 854 |
comprintf("if (kill_rodent(dst)) {\n"); |
| 855 |
comprintf("\tzero_extend_8_rr(scratchie,%s);\n",src); |
| 856 |
comprintf("\tand_l_ri(%s,0xffffff00);\n",dst); |
| 857 |
comprintf("\tor_l(%s,scratchie);\n",dst); |
| 858 |
comprintf("\tforget_about(scratchie);\n"); |
| 859 |
comprintf("\t} else \n" |
| 860 |
"\tmov_b_rr(%s,%s);\n",dst,src); |
| 861 |
break; |
| 862 |
case sz_word: |
| 863 |
comprintf("if (kill_rodent(dst)) {\n"); |
| 864 |
comprintf("\tzero_extend_16_rr(scratchie,%s);\n",src); |
| 865 |
comprintf("\tand_l_ri(%s,0xffff0000);\n",dst); |
| 866 |
comprintf("\tor_l(%s,scratchie);\n",dst); |
| 867 |
comprintf("\tforget_about(scratchie);\n"); |
| 868 |
comprintf("\t} else \n" |
| 869 |
"\tmov_w_rr(%s,%s);\n",dst,src); |
| 870 |
break; |
| 871 |
case sz_long: |
| 872 |
comprintf("\tmov_l_rr(%s,%s);\n",dst,src); |
| 873 |
break; |
| 874 |
} |
| 875 |
return; |
| 876 |
|
| 877 |
case flag_or: |
| 878 |
case flag_eor: |
| 879 |
comprintf("\tdont_care_flags();\n"); |
| 880 |
start_brace(); |
| 881 |
{ |
| 882 |
char* op; |
| 883 |
switch(type) { |
| 884 |
case flag_or: op="or"; break; |
| 885 |
case flag_eor: op="xor"; break; |
| 886 |
default: abort(); |
| 887 |
} |
| 888 |
switch (size) |
| 889 |
{ |
| 890 |
case sz_byte: |
| 891 |
comprintf("if (kill_rodent(dst)) {\n"); |
| 892 |
comprintf("\tzero_extend_8_rr(scratchie,%s);\n",src); |
| 893 |
comprintf("\t%s_l(%s,scratchie);\n",op,dst); |
| 894 |
comprintf("\tforget_about(scratchie);\n"); |
| 895 |
comprintf("\t} else \n" |
| 896 |
"\t%s_b(%s,%s);\n",op,dst,src); |
| 897 |
break; |
| 898 |
case sz_word: |
| 899 |
comprintf("if (kill_rodent(dst)) {\n"); |
| 900 |
comprintf("\tzero_extend_16_rr(scratchie,%s);\n",src); |
| 901 |
comprintf("\t%s_l(%s,scratchie);\n",op,dst); |
| 902 |
comprintf("\tforget_about(scratchie);\n"); |
| 903 |
comprintf("\t} else \n" |
| 904 |
"\t%s_w(%s,%s);\n",op,dst,src); |
| 905 |
break; |
| 906 |
case sz_long: |
| 907 |
comprintf("\t%s_l(%s,%s);\n",op,dst,src); |
| 908 |
break; |
| 909 |
} |
| 910 |
close_brace(); |
| 911 |
return; |
| 912 |
} |
| 913 |
|
| 914 |
|
| 915 |
case flag_addx: |
| 916 |
case flag_subx: |
| 917 |
comprintf("\tdont_care_flags();\n"); |
| 918 |
{ |
| 919 |
char* op; |
| 920 |
switch(type) { |
| 921 |
case flag_addx: op="adc"; break; |
| 922 |
case flag_subx: op="sbb"; break; |
| 923 |
default: abort(); |
| 924 |
} |
| 925 |
comprintf("\trestore_carry();\n"); /* Reload the X flag into C */ |
| 926 |
switch (size) |
| 927 |
{ |
| 928 |
case sz_byte: |
| 929 |
comprintf("\t%s_b(%s,%s);\n",op,dst,src); |
| 930 |
break; |
| 931 |
case sz_word: |
| 932 |
comprintf("\t%s_w(%s,%s);\n",op,dst,src); |
| 933 |
break; |
| 934 |
case sz_long: |
| 935 |
comprintf("\t%s_l(%s,%s);\n",op,dst,src); |
| 936 |
break; |
| 937 |
} |
| 938 |
return; |
| 939 |
} |
| 940 |
break; |
| 941 |
default: return; |
| 942 |
} |
| 943 |
} |
| 944 |
|
| 945 |
/* Need the flags, but possibly not all of them */ |
| 946 |
switch (type) |
| 947 |
{ |
| 948 |
case flag_logical_noclobber: |
| 949 |
failure; |
| 950 |
|
| 951 |
case flag_and: |
| 952 |
case flag_or: |
| 953 |
case flag_eor: |
| 954 |
comprintf("\tdont_care_flags();\n"); |
| 955 |
start_brace(); |
| 956 |
{ |
| 957 |
char* op; |
| 958 |
switch(type) { |
| 959 |
case flag_and: op="and"; break; |
| 960 |
case flag_or: op="or"; break; |
| 961 |
case flag_eor: op="xor"; break; |
| 962 |
default: abort(); |
| 963 |
} |
| 964 |
switch (size) |
| 965 |
{ |
| 966 |
case sz_byte: |
| 967 |
comprintf("\tstart_needflags();\n" |
| 968 |
"\t%s_b(%s,%s);\n",op,dst,src); |
| 969 |
break; |
| 970 |
case sz_word: |
| 971 |
comprintf("\tstart_needflags();\n" |
| 972 |
"\t%s_w(%s,%s);\n",op,dst,src); |
| 973 |
break; |
| 974 |
case sz_long: |
| 975 |
comprintf("\tstart_needflags();\n" |
| 976 |
"\t%s_l(%s,%s);\n",op,dst,src); |
| 977 |
break; |
| 978 |
} |
| 979 |
comprintf("\tlive_flags();\n"); |
| 980 |
comprintf("\tend_needflags();\n"); |
| 981 |
close_brace(); |
| 982 |
return; |
| 983 |
} |
| 984 |
|
| 985 |
case flag_mov: |
| 986 |
comprintf("\tdont_care_flags();\n"); |
| 987 |
start_brace(); |
| 988 |
{ |
| 989 |
switch (size) |
| 990 |
{ |
| 991 |
case sz_byte: |
| 992 |
comprintf("\tif (%s!=%s) {\n",src,dst); |
| 993 |
comprintf("\tmov_b_ri(%s,0);\n" |
| 994 |
"\tstart_needflags();\n",dst); |
| 995 |
comprintf("\tor_b(%s,%s);\n",dst,src); |
| 996 |
comprintf("\t} else {\n"); |
| 997 |
comprintf("\tmov_b_rr(%s,%s);\n",dst,src); |
| 998 |
comprintf("\ttest_b_rr(%s,%s);\n",dst,dst); |
| 999 |
comprintf("\t}\n"); |
| 1000 |
break; |
| 1001 |
case sz_word: |
| 1002 |
comprintf("\tif (%s!=%s) {\n",src,dst); |
| 1003 |
comprintf("\tmov_w_ri(%s,0);\n" |
| 1004 |
"\tstart_needflags();\n",dst); |
| 1005 |
comprintf("\tor_w(%s,%s);\n",dst,src); |
| 1006 |
comprintf("\t} else {\n"); |
| 1007 |
comprintf("\tmov_w_rr(%s,%s);\n",dst,src); |
| 1008 |
comprintf("\ttest_w_rr(%s,%s);\n",dst,dst); |
| 1009 |
comprintf("\t}\n"); |
| 1010 |
break; |
| 1011 |
case sz_long: |
| 1012 |
comprintf("\tif (%s!=%s) {\n",src,dst); |
| 1013 |
comprintf("\tmov_l_ri(%s,0);\n" |
| 1014 |
"\tstart_needflags();\n",dst); |
| 1015 |
comprintf("\tor_l(%s,%s);\n",dst,src); |
| 1016 |
comprintf("\t} else {\n"); |
| 1017 |
comprintf("\tmov_l_rr(%s,%s);\n",dst,src); |
| 1018 |
comprintf("\ttest_l_rr(%s,%s);\n",dst,dst); |
| 1019 |
comprintf("\t}\n"); |
| 1020 |
break; |
| 1021 |
} |
| 1022 |
comprintf("\tlive_flags();\n"); |
| 1023 |
comprintf("\tend_needflags();\n"); |
| 1024 |
close_brace(); |
| 1025 |
return; |
| 1026 |
} |
| 1027 |
|
| 1028 |
case flag_logical: |
| 1029 |
comprintf("\tdont_care_flags();\n"); |
| 1030 |
start_brace(); |
| 1031 |
switch (size) |
| 1032 |
{ |
| 1033 |
case sz_byte: |
| 1034 |
comprintf("\tstart_needflags();\n" |
| 1035 |
"\ttest_b_rr(%s,%s);\n",value,value); |
| 1036 |
break; |
| 1037 |
case sz_word: |
| 1038 |
comprintf("\tstart_needflags();\n" |
| 1039 |
"\ttest_w_rr(%s,%s);\n",value,value); |
| 1040 |
break; |
| 1041 |
case sz_long: |
| 1042 |
comprintf("\tstart_needflags();\n" |
| 1043 |
"\ttest_l_rr(%s,%s);\n",value,value); |
| 1044 |
break; |
| 1045 |
} |
| 1046 |
comprintf("\tlive_flags();\n"); |
| 1047 |
comprintf("\tend_needflags();\n"); |
| 1048 |
close_brace(); |
| 1049 |
return; |
| 1050 |
|
| 1051 |
|
| 1052 |
case flag_add: |
| 1053 |
case flag_sub: |
| 1054 |
case flag_cmp: |
| 1055 |
comprintf("\tdont_care_flags();\n"); |
| 1056 |
{ |
| 1057 |
char* op; |
| 1058 |
switch(type) { |
| 1059 |
case flag_add: op="add"; break; |
| 1060 |
case flag_sub: op="sub"; break; |
| 1061 |
case flag_cmp: op="cmp"; break; |
| 1062 |
default: abort(); |
| 1063 |
} |
| 1064 |
switch (size) |
| 1065 |
{ |
| 1066 |
case sz_byte: |
| 1067 |
comprintf("\tstart_needflags();\n" |
| 1068 |
"\t%s_b(%s,%s);\n",op,dst,src); |
| 1069 |
break; |
| 1070 |
case sz_word: |
| 1071 |
comprintf("\tstart_needflags();\n" |
| 1072 |
"\t%s_w(%s,%s);\n",op,dst,src); |
| 1073 |
break; |
| 1074 |
case sz_long: |
| 1075 |
comprintf("\tstart_needflags();\n" |
| 1076 |
"\t%s_l(%s,%s);\n",op,dst,src); |
| 1077 |
break; |
| 1078 |
} |
| 1079 |
comprintf("\tlive_flags();\n"); |
| 1080 |
comprintf("\tend_needflags();\n"); |
| 1081 |
if (type!=flag_cmp) { |
| 1082 |
duplicate_carry(); |
| 1083 |
} |
| 1084 |
comprintf("if (!(needed_flags & FLAG_CZNV)) dont_care_flags();\n"); |
| 1085 |
|
| 1086 |
return; |
| 1087 |
} |
| 1088 |
|
| 1089 |
case flag_addx: |
| 1090 |
case flag_subx: |
| 1091 |
uses_setzflg; |
| 1092 |
uses_cmov; |
| 1093 |
comprintf("\tdont_care_flags();\n"); |
| 1094 |
{ |
| 1095 |
char* op; |
| 1096 |
switch(type) { |
| 1097 |
case flag_addx: op="adc"; break; |
| 1098 |
case flag_subx: op="sbb"; break; |
| 1099 |
default: abort(); |
| 1100 |
} |
| 1101 |
start_brace(); |
| 1102 |
comprintf("\tint zero=scratchie++;\n" |
| 1103 |
"\tint one=scratchie++;\n" |
| 1104 |
"\tif (needed_flags&FLAG_Z) {\n" |
| 1105 |
"\tmov_l_ri(zero,0);\n" |
| 1106 |
"\tmov_l_ri(one,1);\n" |
| 1107 |
"\tmake_flags_live();\n" |
| 1108 |
"\tcmov_l_rr(zero,one,5);\n" |
| 1109 |
"\t}\n"); |
| 1110 |
comprintf("\trestore_carry();\n"); /* Reload the X flag into C */ |
| 1111 |
switch (size) |
| 1112 |
{ |
| 1113 |
case sz_byte: |
| 1114 |
comprintf("\tstart_needflags();\n" |
| 1115 |
"\t%s_b(%s,%s);\n",op,dst,src); |
| 1116 |
break; |
| 1117 |
case sz_word: |
| 1118 |
comprintf("\tstart_needflags();\n" |
| 1119 |
"\t%s_w(%s,%s);\n",op,dst,src); |
| 1120 |
break; |
| 1121 |
case sz_long: |
| 1122 |
comprintf("\tstart_needflags();\n" |
| 1123 |
"\t%s_l(%s,%s);\n",op,dst,src); |
| 1124 |
break; |
| 1125 |
} |
| 1126 |
comprintf("\tif (needed_flags&FLAG_Z) {\n" |
| 1127 |
"\tcmov_l_rr(zero,one,5);\n" |
| 1128 |
"\tsetzflg_l(zero);\n" |
| 1129 |
"\t}\n"); |
| 1130 |
comprintf("\tlive_flags();\n"); |
| 1131 |
comprintf("\tend_needflags();\n"); |
| 1132 |
duplicate_carry(); |
| 1133 |
comprintf("if (!(needed_flags & FLAG_CZNV)) dont_care_flags();\n"); |
| 1134 |
return; |
| 1135 |
} |
| 1136 |
default: |
| 1137 |
failure; |
| 1138 |
break; |
| 1139 |
} |
| 1140 |
} |
| 1141 |
|
| 1142 |
static void |
| 1143 |
force_range_for_rox (const char *var, wordsizes size) |
| 1144 |
{ |
| 1145 |
/* Could do a modulo operation here... which one is faster? */ |
| 1146 |
switch (size) |
| 1147 |
{ |
| 1148 |
case sz_long: |
| 1149 |
comprintf ("\tif (%s >= 33) %s -= 33;\n", var, var); |
| 1150 |
break; |
| 1151 |
case sz_word: |
| 1152 |
comprintf ("\tif (%s >= 34) %s -= 34;\n", var, var); |
| 1153 |
comprintf ("\tif (%s >= 17) %s -= 17;\n", var, var); |
| 1154 |
break; |
| 1155 |
case sz_byte: |
| 1156 |
comprintf ("\tif (%s >= 36) %s -= 36;\n", var, var); |
| 1157 |
comprintf ("\tif (%s >= 18) %s -= 18;\n", var, var); |
| 1158 |
comprintf ("\tif (%s >= 9) %s -= 9;\n", var, var); |
| 1159 |
break; |
| 1160 |
} |
| 1161 |
} |
| 1162 |
|
| 1163 |
static const char * |
| 1164 |
cmask (wordsizes size) |
| 1165 |
{ |
| 1166 |
switch (size) |
| 1167 |
{ |
| 1168 |
case sz_byte: |
| 1169 |
return "0x80"; |
| 1170 |
case sz_word: |
| 1171 |
return "0x8000"; |
| 1172 |
case sz_long: |
| 1173 |
return "0x80000000"; |
| 1174 |
default: |
| 1175 |
abort (); |
| 1176 |
} |
| 1177 |
} |
| 1178 |
|
| 1179 |
static int |
| 1180 |
source_is_imm1_8 (struct instr *i) |
| 1181 |
{ |
| 1182 |
return i->stype == 3; |
| 1183 |
} |
| 1184 |
|
| 1185 |
static int /* returns zero for success, non-zero for failure */ |
| 1186 |
gen_opcode (unsigned long int opcode) |
| 1187 |
{ |
| 1188 |
struct instr *curi = table68k + opcode; |
| 1189 |
char* ssize=NULL; |
| 1190 |
|
| 1191 |
insn_n_cycles = 2; |
| 1192 |
global_failure=0; |
| 1193 |
long_opcode=0; |
| 1194 |
global_isjump=0; |
| 1195 |
global_iscjump=0; |
| 1196 |
global_isaddx=0; |
| 1197 |
global_cmov=0; |
| 1198 |
global_fpu=0; |
| 1199 |
global_mayfail=0; |
| 1200 |
hack_opcode=opcode; |
| 1201 |
endstr[0]=0; |
| 1202 |
|
| 1203 |
start_brace (); |
| 1204 |
comprintf("\tuae_u8 scratchie=S1;\n"); |
| 1205 |
switch (curi->plev) |
| 1206 |
{ |
| 1207 |
case 0: /* not privileged */ |
| 1208 |
break; |
| 1209 |
case 1: /* unprivileged only on 68000 */ |
| 1210 |
if (cpu_level == 0) |
| 1211 |
break; |
| 1212 |
if (next_cpu_level < 0) |
| 1213 |
next_cpu_level = 0; |
| 1214 |
|
| 1215 |
/* fall through */ |
| 1216 |
case 2: /* priviledged */ |
| 1217 |
failure; /* Easy ones first */ |
| 1218 |
break; |
| 1219 |
case 3: /* privileged if size == word */ |
| 1220 |
if (curi->size == sz_byte) |
| 1221 |
break; |
| 1222 |
failure; |
| 1223 |
break; |
| 1224 |
} |
| 1225 |
switch (curi->size) { |
| 1226 |
case sz_byte: ssize="b"; break; |
| 1227 |
case sz_word: ssize="w"; break; |
| 1228 |
case sz_long: ssize="l"; break; |
| 1229 |
default: abort(); |
| 1230 |
} |
| 1231 |
|
| 1232 |
switch (curi->mnemo) |
| 1233 |
{ |
| 1234 |
case i_OR: |
| 1235 |
case i_AND: |
| 1236 |
case i_EOR: |
| 1237 |
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
| 1238 |
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0); |
| 1239 |
switch(curi->mnemo) { |
| 1240 |
case i_OR: genflags (flag_or, curi->size, "", "src", "dst"); break; |
| 1241 |
case i_AND: genflags (flag_and, curi->size, "", "src", "dst"); break; |
| 1242 |
case i_EOR: genflags (flag_eor, curi->size, "", "src", "dst"); break; |
| 1243 |
} |
| 1244 |
genastore ("dst", curi->dmode, "dstreg", curi->size, "dst"); |
| 1245 |
break; |
| 1246 |
|
| 1247 |
case i_ORSR: |
| 1248 |
case i_EORSR: |
| 1249 |
failure; |
| 1250 |
isjump; |
| 1251 |
break; |
| 1252 |
case i_ANDSR: |
| 1253 |
failure; |
| 1254 |
isjump; |
| 1255 |
break; |
| 1256 |
case i_SUB: |
| 1257 |
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
| 1258 |
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0); |
| 1259 |
genflags (flag_sub, curi->size, "", "src", "dst"); |
| 1260 |
genastore ("dst", curi->dmode, "dstreg", curi->size, "dst"); |
| 1261 |
break; |
| 1262 |
case i_SUBA: |
| 1263 |
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
| 1264 |
genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0); |
| 1265 |
start_brace(); |
| 1266 |
comprintf("\tint tmp=scratchie++;\n"); |
| 1267 |
switch(curi->size) { |
| 1268 |
case sz_byte: comprintf("\tsign_extend_8_rr(tmp,src);\n"); break; |
| 1269 |
case sz_word: comprintf("\tsign_extend_16_rr(tmp,src);\n"); break; |
| 1270 |
case sz_long: comprintf("\ttmp=src;\n"); break; |
| 1271 |
default: abort(); |
| 1272 |
} |
| 1273 |
comprintf("\tsub_l(dst,tmp);\n"); |
| 1274 |
genastore ("dst", curi->dmode, "dstreg", sz_long, "dst"); |
| 1275 |
break; |
| 1276 |
case i_SUBX: |
| 1277 |
isaddx; |
| 1278 |
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
| 1279 |
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0); |
| 1280 |
genflags (flag_subx, curi->size, "", "src", "dst"); |
| 1281 |
genastore ("dst", curi->dmode, "dstreg", curi->size, "dst"); |
| 1282 |
break; |
| 1283 |
case i_SBCD: |
| 1284 |
failure; |
| 1285 |
/* I don't think so! */ |
| 1286 |
break; |
| 1287 |
case i_ADD: |
| 1288 |
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
| 1289 |
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0); |
| 1290 |
genflags (flag_add, curi->size, "", "src", "dst"); |
| 1291 |
genastore ("dst", curi->dmode, "dstreg", curi->size, "dst"); |
| 1292 |
break; |
| 1293 |
case i_ADDA: |
| 1294 |
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
| 1295 |
genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0); |
| 1296 |
start_brace(); |
| 1297 |
comprintf("\tint tmp=scratchie++;\n"); |
| 1298 |
switch(curi->size) { |
| 1299 |
case sz_byte: comprintf("\tsign_extend_8_rr(tmp,src);\n"); break; |
| 1300 |
case sz_word: comprintf("\tsign_extend_16_rr(tmp,src);\n"); break; |
| 1301 |
case sz_long: comprintf("\ttmp=src;\n"); break; |
| 1302 |
default: abort(); |
| 1303 |
} |
| 1304 |
comprintf("\tadd_l(dst,tmp);\n"); |
| 1305 |
genastore ("dst", curi->dmode, "dstreg", sz_long, "dst"); |
| 1306 |
break; |
| 1307 |
case i_ADDX: |
| 1308 |
isaddx; |
| 1309 |
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
| 1310 |
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0); |
| 1311 |
start_brace(); |
| 1312 |
genflags (flag_addx, curi->size, "", "src", "dst"); |
| 1313 |
genastore ("dst", curi->dmode, "dstreg", curi->size, "dst"); |
| 1314 |
break; |
| 1315 |
case i_ABCD: |
| 1316 |
failure; |
| 1317 |
/* No BCD maths for me.... */ |
| 1318 |
break; |
| 1319 |
case i_NEG: |
| 1320 |
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
| 1321 |
start_brace (); |
| 1322 |
comprintf("\tint dst=scratchie++;\n"); |
| 1323 |
comprintf("\tmov_l_ri(dst,0);\n"); |
| 1324 |
genflags (flag_sub, curi->size, "", "src", "dst"); |
| 1325 |
genastore ("dst", curi->smode, "srcreg", curi->size, "src"); |
| 1326 |
break; |
| 1327 |
case i_NEGX: |
| 1328 |
isaddx; |
| 1329 |
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
| 1330 |
start_brace (); |
| 1331 |
comprintf("\tint dst=scratchie++;\n"); |
| 1332 |
comprintf("\tmov_l_ri(dst,0);\n"); |
| 1333 |
genflags (flag_subx, curi->size, "", "src", "dst"); |
| 1334 |
genastore ("dst", curi->smode, "srcreg", curi->size, "src"); |
| 1335 |
break; |
| 1336 |
|
| 1337 |
case i_NBCD: |
| 1338 |
failure; |
| 1339 |
/* Nope! */ |
| 1340 |
break; |
| 1341 |
case i_CLR: |
| 1342 |
genamode (curi->smode, "srcreg", curi->size, "src", 2, 0); |
| 1343 |
start_brace(); |
| 1344 |
comprintf("\tint dst=scratchie++;\n"); |
| 1345 |
comprintf("\tmov_l_ri(dst,0);\n"); |
| 1346 |
genflags (flag_logical, curi->size, "dst", "", ""); |
| 1347 |
genastore ("dst", curi->smode, "srcreg", curi->size, "src"); |
| 1348 |
break; |
| 1349 |
case i_NOT: |
| 1350 |
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
| 1351 |
start_brace (); |
| 1352 |
comprintf("\tint dst=scratchie++;\n"); |
| 1353 |
comprintf("\tmov_l_ri(dst,0xffffffff);\n"); |
| 1354 |
genflags (flag_eor, curi->size, "", "src", "dst"); |
| 1355 |
genastore ("dst", curi->smode, "srcreg", curi->size, "src"); |
| 1356 |
break; |
| 1357 |
case i_TST: |
| 1358 |
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
| 1359 |
genflags (flag_logical, curi->size, "src", "", ""); |
| 1360 |
break; |
| 1361 |
case i_BCHG: |
| 1362 |
case i_BCLR: |
| 1363 |
case i_BSET: |
| 1364 |
case i_BTST: |
| 1365 |
/* failure; /* NEW: from "Ipswitch Town" release */ |
| 1366 |
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
| 1367 |
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0); |
| 1368 |
start_brace(); |
| 1369 |
comprintf("\tint s=scratchie++;\n" |
| 1370 |
"\tmov_l_rr(s,src);\n"); |
| 1371 |
if (curi->size == sz_byte) |
| 1372 |
comprintf("\tand_l_ri(s,7);\n"); |
| 1373 |
else |
| 1374 |
comprintf("\tand_l_ri(s,31);\n"); |
| 1375 |
|
| 1376 |
{ |
| 1377 |
char* op; |
| 1378 |
int need_write=1; |
| 1379 |
|
| 1380 |
switch(curi->mnemo) { |
| 1381 |
case i_BCHG: op="btc"; break; |
| 1382 |
case i_BCLR: op="btr"; break; |
| 1383 |
case i_BSET: op="bts"; break; |
| 1384 |
case i_BTST: op="bt"; need_write=0; break; |
| 1385 |
} |
| 1386 |
comprintf("\t%s_l_rr(dst,s);\n" /* Answer now in C */ |
| 1387 |
"\tsbb_l(s,s);\n" /* s is 0 if bit was 0, -1 otherwise */ |
| 1388 |
"\tmake_flags_live();\n" /* Get the flags back */ |
| 1389 |
"\tdont_care_flags();\n",op); |
| 1390 |
if (!noflags) { |
| 1391 |
uses_setzflg; |
| 1392 |
comprintf("\tstart_needflags();\n" |
| 1393 |
"\tsetzflg_l(s);\n" |
| 1394 |
"\tlive_flags();\n" |
| 1395 |
"\tend_needflags();\n"); |
| 1396 |
} |
| 1397 |
if (need_write) |
| 1398 |
genastore ("dst", curi->dmode, "dstreg", curi->size, "dst"); |
| 1399 |
} |
| 1400 |
break; |
| 1401 |
|
| 1402 |
case i_CMPM: |
| 1403 |
case i_CMP: |
| 1404 |
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
| 1405 |
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0); |
| 1406 |
start_brace (); |
| 1407 |
genflags (flag_cmp, curi->size, "", "src", "dst"); |
| 1408 |
break; |
| 1409 |
case i_CMPA: |
| 1410 |
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
| 1411 |
genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0); |
| 1412 |
start_brace(); |
| 1413 |
comprintf("\tint tmps=scratchie++;\n"); |
| 1414 |
switch(curi->size) { |
| 1415 |
case sz_byte: comprintf("\tsign_extend_8_rr(tmps,src);\n"); break; |
| 1416 |
case sz_word: comprintf("\tsign_extend_16_rr(tmps,src);\n"); break; |
| 1417 |
case sz_long: comprintf("tmps=src;\n"); break; |
| 1418 |
default: abort(); |
| 1419 |
} |
| 1420 |
genflags (flag_cmp, sz_long, "", "tmps", "dst"); |
| 1421 |
break; |
| 1422 |
/* The next two are coded a little unconventional, but they are doing |
| 1423 |
* weird things... */ |
| 1424 |
case i_MVPRM: |
| 1425 |
isjump; |
| 1426 |
failure; |
| 1427 |
break; |
| 1428 |
case i_MVPMR: |
| 1429 |
isjump; |
| 1430 |
failure; |
| 1431 |
break; |
| 1432 |
case i_MOVE: |
| 1433 |
switch(curi->dmode) { |
| 1434 |
case Dreg: |
| 1435 |
case Areg: |
| 1436 |
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
| 1437 |
genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0); |
| 1438 |
genflags (flag_mov, curi->size, "", "src", "dst"); |
| 1439 |
genastore ("dst", curi->dmode, "dstreg", curi->size, "dst"); |
| 1440 |
break; |
| 1441 |
default: /* It goes to memory, not a register */ |
| 1442 |
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
| 1443 |
genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0); |
| 1444 |
genflags (flag_logical, curi->size, "src", "", ""); |
| 1445 |
genastore ("src", curi->dmode, "dstreg", curi->size, "dst"); |
| 1446 |
break; |
| 1447 |
} |
| 1448 |
break; |
| 1449 |
case i_MOVEA: |
| 1450 |
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
| 1451 |
genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0); |
| 1452 |
|
| 1453 |
start_brace(); |
| 1454 |
comprintf("\tint tmps=scratchie++;\n"); |
| 1455 |
switch(curi->size) { |
| 1456 |
case sz_word: comprintf("\tsign_extend_16_rr(dst,src);\n"); break; |
| 1457 |
case sz_long: comprintf("\tmov_l_rr(dst,src);\n"); break; |
| 1458 |
default: abort(); |
| 1459 |
} |
| 1460 |
genastore ("dst", curi->dmode, "dstreg", sz_long, "dst"); |
| 1461 |
break; |
| 1462 |
|
| 1463 |
case i_MVSR2: |
| 1464 |
isjump; |
| 1465 |
failure; |
| 1466 |
break; |
| 1467 |
case i_MV2SR: |
| 1468 |
isjump; |
| 1469 |
failure; |
| 1470 |
break; |
| 1471 |
case i_SWAP: |
| 1472 |
genamode (curi->smode, "srcreg", sz_long, "src", 1, 0); |
| 1473 |
comprintf("\tdont_care_flags();\n"); |
| 1474 |
comprintf("\trol_l_ri(src,16);\n"); |
| 1475 |
genflags (flag_logical, sz_long, "src", "", ""); |
| 1476 |
genastore ("src", curi->smode, "srcreg", sz_long, "src"); |
| 1477 |
break; |
| 1478 |
case i_EXG: |
| 1479 |
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
| 1480 |
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0); |
| 1481 |
start_brace(); |
| 1482 |
comprintf("\tint tmp=scratchie++;\n" |
| 1483 |
"\tmov_l_rr(tmp,src);\n"); |
| 1484 |
genastore ("dst", curi->smode, "srcreg", curi->size, "src"); |
| 1485 |
genastore ("tmp", curi->dmode, "dstreg", curi->size, "dst"); |
| 1486 |
break; |
| 1487 |
case i_EXT: |
| 1488 |
genamode (curi->smode, "srcreg", sz_long, "src", 1, 0); |
| 1489 |
comprintf("\tdont_care_flags();\n"); |
| 1490 |
start_brace (); |
| 1491 |
switch (curi->size) |
| 1492 |
{ |
| 1493 |
case sz_byte: |
| 1494 |
comprintf ("\tint dst = src;\n" |
| 1495 |
"\tsign_extend_8_rr(src,src);\n"); |
| 1496 |
break; |
| 1497 |
case sz_word: |
| 1498 |
comprintf ("\tint dst = scratchie++;\n" |
| 1499 |
"\tsign_extend_8_rr(dst,src);\n"); |
| 1500 |
break; |
| 1501 |
case sz_long: |
| 1502 |
comprintf ("\tint dst = src;\n" |
| 1503 |
"\tsign_extend_16_rr(src,src);\n"); |
| 1504 |
break; |
| 1505 |
default: |
| 1506 |
abort (); |
| 1507 |
} |
| 1508 |
genflags (flag_logical, |
| 1509 |
curi->size == sz_word ? sz_word : sz_long, "dst", "", ""); |
| 1510 |
genastore ("dst", curi->smode, "srcreg", |
| 1511 |
curi->size == sz_word ? sz_word : sz_long, "src"); |
| 1512 |
break; |
| 1513 |
case i_MVMEL: |
| 1514 |
genmovemel (opcode); |
| 1515 |
break; |
| 1516 |
case i_MVMLE: |
| 1517 |
genmovemle (opcode); |
| 1518 |
break; |
| 1519 |
case i_TRAP: |
| 1520 |
isjump; |
| 1521 |
failure; |
| 1522 |
break; |
| 1523 |
case i_MVR2USP: |
| 1524 |
isjump; |
| 1525 |
failure; |
| 1526 |
break; |
| 1527 |
case i_MVUSP2R: |
| 1528 |
isjump; |
| 1529 |
failure; |
| 1530 |
break; |
| 1531 |
case i_RESET: |
| 1532 |
isjump; |
| 1533 |
failure; |
| 1534 |
break; |
| 1535 |
case i_NOP: |
| 1536 |
break; |
| 1537 |
case i_STOP: |
| 1538 |
isjump; |
| 1539 |
failure; |
| 1540 |
break; |
| 1541 |
case i_RTE: |
| 1542 |
isjump; |
| 1543 |
failure; |
| 1544 |
break; |
| 1545 |
case i_RTD: |
| 1546 |
/* failure; /* NEW: from "Ipswitch Town" release */ |
| 1547 |
genamode (curi->smode, "srcreg", curi->size, "offs", 1, 0); |
| 1548 |
/* offs is constant */ |
| 1549 |
comprintf("\tadd_l_ri(offs,4);\n"); |
| 1550 |
start_brace(); |
| 1551 |
comprintf("\tint newad=scratchie++;\n" |
| 1552 |
"\treadlong(15,newad,scratchie);\n" |
| 1553 |
"\tmov_l_mr((uae_u32)®s.pc,newad);\n" |
| 1554 |
"\tget_n_addr_jmp(newad,PC_P,scratchie);\n" |
| 1555 |
"\tmov_l_mr((uae_u32)®s.pc_oldp,PC_P);\n" |
| 1556 |
"\tm68k_pc_offset=0;\n" |
| 1557 |
"\tadd_l(15,offs);\n"); |
| 1558 |
gen_update_next_handler(); |
| 1559 |
isjump; |
| 1560 |
break; |
| 1561 |
case i_LINK: |
| 1562 |
/* failure; /* NEW: from "Ipswitch Town" release */ |
| 1563 |
genamode (curi->smode, "srcreg", sz_long, "src", 1, 0); |
| 1564 |
genamode (curi->dmode, "dstreg", curi->size, "offs", 1, 0); |
| 1565 |
comprintf("\tsub_l_ri(15,4);\n" |
| 1566 |
"\twritelong_clobber(15,src,scratchie);\n" |
| 1567 |
"\tmov_l_rr(src,15);\n"); |
| 1568 |
if (curi->size==sz_word) |
| 1569 |
comprintf("\tsign_extend_16_rr(offs,offs);\n"); |
| 1570 |
comprintf("\tadd_l(15,offs);\n"); |
| 1571 |
genastore ("src", curi->smode, "srcreg", sz_long, "src"); |
| 1572 |
break; |
| 1573 |
case i_UNLK: |
| 1574 |
/* failure; /* NEW: from "Ipswitch Town" release */ |
| 1575 |
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
| 1576 |
comprintf("\tmov_l_rr(15,src);\n" |
| 1577 |
"\treadlong(15,src,scratchie);\n" |
| 1578 |
"\tadd_l_ri(15,4);\n"); |
| 1579 |
genastore ("src", curi->smode, "srcreg", curi->size, "src"); |
| 1580 |
break; |
| 1581 |
case i_RTS: |
| 1582 |
comprintf("\tint newad=scratchie++;\n" |
| 1583 |
"\treadlong(15,newad,scratchie);\n" |
| 1584 |
"\tmov_l_mr((uae_u32)®s.pc,newad);\n" |
| 1585 |
"\tget_n_addr_jmp(newad,PC_P,scratchie);\n" |
| 1586 |
"\tmov_l_mr((uae_u32)®s.pc_oldp,PC_P);\n" |
| 1587 |
"\tm68k_pc_offset=0;\n" |
| 1588 |
"\tlea_l_brr(15,15,4);\n"); |
| 1589 |
gen_update_next_handler(); |
| 1590 |
isjump; |
| 1591 |
break; |
| 1592 |
case i_TRAPV: |
| 1593 |
isjump; |
| 1594 |
failure; |
| 1595 |
break; |
| 1596 |
case i_RTR: |
| 1597 |
isjump; |
| 1598 |
failure; |
| 1599 |
break; |
| 1600 |
case i_JSR: |
| 1601 |
isjump; |
| 1602 |
genamode (curi->smode, "srcreg", curi->size, "src", 0, 0); |
| 1603 |
start_brace(); |
| 1604 |
comprintf("\tuae_u32 retadd=start_pc+((char *)comp_pc_p-(char *)start_pc_p)+m68k_pc_offset;\n"); |
| 1605 |
comprintf("\tint ret=scratchie++;\n" |
| 1606 |
"\tmov_l_ri(ret,retadd);\n" |
| 1607 |
"\tsub_l_ri(15,4);\n" |
| 1608 |
"\twritelong_clobber(15,ret,scratchie);\n"); |
| 1609 |
comprintf("\tmov_l_mr((uae_u32)®s.pc,srca);\n" |
| 1610 |
"\tget_n_addr_jmp(srca,PC_P,scratchie);\n" |
| 1611 |
"\tmov_l_mr((uae_u32)®s.pc_oldp,PC_P);\n" |
| 1612 |
"\tm68k_pc_offset=0;\n"); |
| 1613 |
gen_update_next_handler(); |
| 1614 |
break; |
| 1615 |
case i_JMP: |
| 1616 |
isjump; |
| 1617 |
genamode (curi->smode, "srcreg", curi->size, "src", 0, 0); |
| 1618 |
comprintf("\tmov_l_mr((uae_u32)®s.pc,srca);\n" |
| 1619 |
"\tget_n_addr_jmp(srca,PC_P,scratchie);\n" |
| 1620 |
"\tmov_l_mr((uae_u32)®s.pc_oldp,PC_P);\n" |
| 1621 |
"\tm68k_pc_offset=0;\n"); |
| 1622 |
gen_update_next_handler(); |
| 1623 |
break; |
| 1624 |
case i_BSR: |
| 1625 |
is_const_jump; |
| 1626 |
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
| 1627 |
start_brace(); |
| 1628 |
comprintf("\tuae_u32 retadd=start_pc+((char *)comp_pc_p-(char *)start_pc_p)+m68k_pc_offset;\n"); |
| 1629 |
comprintf("\tint ret=scratchie++;\n" |
| 1630 |
"\tmov_l_ri(ret,retadd);\n" |
| 1631 |
"\tsub_l_ri(15,4);\n" |
| 1632 |
"\twritelong_clobber(15,ret,scratchie);\n"); |
| 1633 |
comprintf("\tadd_l_ri(src,m68k_pc_offset_thisinst+2);\n"); |
| 1634 |
comprintf("\tm68k_pc_offset=0;\n"); |
| 1635 |
comprintf("\tadd_l(PC_P,src);\n"); |
| 1636 |
|
| 1637 |
comprintf("\tcomp_pc_p=(uae_u8*)get_const(PC_P);\n"); |
| 1638 |
break; |
| 1639 |
case i_Bcc: |
| 1640 |
comprintf("\tuae_u32 v,v1,v2;\n"); |
| 1641 |
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
| 1642 |
/* That source is an immediate, so we can clobber it with abandon */ |
| 1643 |
switch(curi->size) { |
| 1644 |
case sz_byte: comprintf("\tsign_extend_8_rr(src,src);\n"); break; |
| 1645 |
case sz_word: comprintf("\tsign_extend_16_rr(src,src);\n"); break; |
| 1646 |
case sz_long: break; |
| 1647 |
} |
| 1648 |
comprintf("\tsub_l_ri(src,m68k_pc_offset-m68k_pc_offset_thisinst-2);\n"); |
| 1649 |
/* Leave the following as "add" --- it will allow it to be optimized |
| 1650 |
away due to src being a constant ;-) */ |
| 1651 |
comprintf("\tadd_l_ri(src,(uae_u32)comp_pc_p);\n"); |
| 1652 |
comprintf("\tmov_l_ri(PC_P,(uae_u32)comp_pc_p);\n"); |
| 1653 |
/* Now they are both constant. Might as well fold in m68k_pc_offset */ |
| 1654 |
comprintf("\tadd_l_ri(src,m68k_pc_offset);\n"); |
| 1655 |
comprintf("\tadd_l_ri(PC_P,m68k_pc_offset);\n"); |
| 1656 |
comprintf("\tm68k_pc_offset=0;\n"); |
| 1657 |
|
| 1658 |
if (curi->cc>=2) { |
| 1659 |
comprintf("\tv1=get_const(PC_P);\n" |
| 1660 |
"\tv2=get_const(src);\n" |
| 1661 |
"\tregister_branch(v1,v2,%d);\n", |
| 1662 |
cond_codes_x86[curi->cc]); |
| 1663 |
comprintf("\tmake_flags_live();\n"); /* Load the flags */ |
| 1664 |
isjump; |
| 1665 |
} |
| 1666 |
else { |
| 1667 |
is_const_jump; |
| 1668 |
} |
| 1669 |
|
| 1670 |
switch(curi->cc) { |
| 1671 |
case 0: /* Unconditional jump */ |
| 1672 |
comprintf("\tmov_l_rr(PC_P,src);\n"); |
| 1673 |
comprintf("\tcomp_pc_p=(uae_u8*)get_const(PC_P);\n"); |
| 1674 |
break; |
| 1675 |
case 1: break; /* This is silly! */ |
| 1676 |
case 8: failure; break; /* Work out details! FIXME */ |
| 1677 |
case 9: failure; break; /* Not critical, though! */ |
| 1678 |
|
| 1679 |
case 2: |
| 1680 |
case 3: |
| 1681 |
case 4: |
| 1682 |
case 5: |
| 1683 |
case 6: |
| 1684 |
case 7: |
| 1685 |
case 10: |
| 1686 |
case 11: |
| 1687 |
case 12: |
| 1688 |
case 13: |
| 1689 |
case 14: |
| 1690 |
case 15: |
| 1691 |
break; |
| 1692 |
default: abort(); |
| 1693 |
} |
| 1694 |
break; |
| 1695 |
case i_LEA: |
| 1696 |
genamode (curi->smode, "srcreg", curi->size, "src", 0, 0); |
| 1697 |
genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0); |
| 1698 |
genastore ("srca", curi->dmode, "dstreg", curi->size, "dst"); |
| 1699 |
break; |
| 1700 |
case i_PEA: |
| 1701 |
if (table68k[opcode].smode==Areg || |
| 1702 |
table68k[opcode].smode==Aind || |
| 1703 |
table68k[opcode].smode==Aipi || |
| 1704 |
table68k[opcode].smode==Apdi || |
| 1705 |
table68k[opcode].smode==Ad16 || |
| 1706 |
table68k[opcode].smode==Ad8r) |
| 1707 |
comprintf("if (srcreg==7) dodgy=1;\n"); |
| 1708 |
|
| 1709 |
genamode (curi->smode, "srcreg", curi->size, "src", 0, 0); |
| 1710 |
genamode (Apdi, "7", sz_long, "dst", 2, 0); |
| 1711 |
genastore ("srca", Apdi, "7", sz_long, "dst"); |
| 1712 |
break; |
| 1713 |
case i_DBcc: |
| 1714 |
isjump; |
| 1715 |
uses_cmov; |
| 1716 |
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
| 1717 |
genamode (curi->dmode, "dstreg", curi->size, "offs", 1, 0); |
| 1718 |
|
| 1719 |
/* That offs is an immediate, so we can clobber it with abandon */ |
| 1720 |
switch(curi->size) { |
| 1721 |
case sz_word: comprintf("\tsign_extend_16_rr(offs,offs);\n"); break; |
| 1722 |
default: abort(); /* Seems this only comes in word flavour */ |
| 1723 |
} |
| 1724 |
comprintf("\tsub_l_ri(offs,m68k_pc_offset-m68k_pc_offset_thisinst-2);\n"); |
| 1725 |
comprintf("\tadd_l_ri(offs,(uae_u32)comp_pc_p);\n"); /* New PC, |
| 1726 |
once the |
| 1727 |
offset_68k is |
| 1728 |
* also added */ |
| 1729 |
/* Let's fold in the m68k_pc_offset at this point */ |
| 1730 |
comprintf("\tadd_l_ri(offs,m68k_pc_offset);\n"); |
| 1731 |
comprintf("\tadd_l_ri(PC_P,m68k_pc_offset);\n"); |
| 1732 |
comprintf("\tm68k_pc_offset=0;\n"); |
| 1733 |
|
| 1734 |
start_brace(); |
| 1735 |
comprintf("\tint nsrc=scratchie++;\n"); |
| 1736 |
|
| 1737 |
if (curi->cc>=2) { |
| 1738 |
comprintf("\tmake_flags_live();\n"); /* Load the flags */ |
| 1739 |
} |
| 1740 |
|
| 1741 |
if (curi->size!=sz_word) |
| 1742 |
abort(); |
| 1743 |
|
| 1744 |
|
| 1745 |
switch(curi->cc) { |
| 1746 |
case 0: /* This is an elaborate nop? */ |
| 1747 |
break; |
| 1748 |
case 1: |
| 1749 |
comprintf("\tstart_needflags();\n"); |
| 1750 |
comprintf("\tsub_w_ri(src,1);\n"); |
| 1751 |
comprintf("\t end_needflags();\n"); |
| 1752 |
start_brace(); |
| 1753 |
comprintf("\tuae_u32 v2,v;\n" |
| 1754 |
"\tuae_u32 v1=get_const(PC_P);\n"); |
| 1755 |
comprintf("\tv2=get_const(offs);\n" |
| 1756 |
"\tregister_branch(v1,v2,3);\n"); |
| 1757 |
break; |
| 1758 |
|
| 1759 |
case 8: failure; break; /* Work out details! FIXME */ |
| 1760 |
case 9: failure; break; /* Not critical, though! */ |
| 1761 |
|
| 1762 |
case 2: |
| 1763 |
case 3: |
| 1764 |
case 4: |
| 1765 |
case 5: |
| 1766 |
case 6: |
| 1767 |
case 7: |
| 1768 |
case 10: |
| 1769 |
case 11: |
| 1770 |
case 12: |
| 1771 |
case 13: |
| 1772 |
case 14: |
| 1773 |
case 15: |
| 1774 |
comprintf("\tmov_l_rr(nsrc,src);\n"); |
| 1775 |
comprintf("\tlea_l_brr(scratchie,src,(uae_s32)-1);\n" |
| 1776 |
"\tmov_w_rr(src,scratchie);\n"); |
| 1777 |
comprintf("\tcmov_l_rr(offs,PC_P,%d);\n", |
| 1778 |
cond_codes_x86[curi->cc]); |
| 1779 |
comprintf("\tcmov_l_rr(src,nsrc,%d);\n", |
| 1780 |
cond_codes_x86[curi->cc]); |
| 1781 |
/* OK, now for cc=true, we have src==nsrc and offs==PC_P, |
| 1782 |
so whether we move them around doesn't matter. However, |
| 1783 |
if cc=false, we have offs==jump_pc, and src==nsrc-1 */ |
| 1784 |
|
| 1785 |
comprintf("\t start_needflags();\n"); |
| 1786 |
comprintf("\ttest_w_rr(nsrc,nsrc);\n"); |
| 1787 |
comprintf("\t end_needflags();\n"); |
| 1788 |
comprintf("\tcmov_l_rr(PC_P,offs,5);\n"); |
| 1789 |
break; |
| 1790 |
default: abort(); |
| 1791 |
} |
| 1792 |
genastore ("src", curi->smode, "srcreg", curi->size, "src"); |
| 1793 |
gen_update_next_handler(); |
| 1794 |
break; |
| 1795 |
|
| 1796 |
case i_Scc: |
| 1797 |
/* failure; /* NEW: from "Ipswitch Town" release */ |
| 1798 |
genamode (curi->smode, "srcreg", curi->size, "src", 2, 0); |
| 1799 |
start_brace (); |
| 1800 |
comprintf ("\tint val = scratchie++;\n"); |
| 1801 |
|
| 1802 |
/* We set val to 0 if we really should use 255, and to 1 for real 0 */ |
| 1803 |
switch(curi->cc) { |
| 1804 |
case 0: /* Unconditional set */ |
| 1805 |
comprintf("\tmov_l_ri(val,0);\n"); |
| 1806 |
break; |
| 1807 |
case 1: |
| 1808 |
/* Unconditional not-set */ |
| 1809 |
comprintf("\tmov_l_ri(val,1);\n"); |
| 1810 |
break; |
| 1811 |
case 8: failure; break; /* Work out details! FIXME */ |
| 1812 |
case 9: failure; break; /* Not critical, though! */ |
| 1813 |
|
| 1814 |
case 2: |
| 1815 |
case 3: |
| 1816 |
case 4: |
| 1817 |
case 5: |
| 1818 |
case 6: |
| 1819 |
case 7: |
| 1820 |
case 10: |
| 1821 |
case 11: |
| 1822 |
case 12: |
| 1823 |
case 13: |
| 1824 |
case 14: |
| 1825 |
case 15: |
| 1826 |
comprintf("\tmake_flags_live();\n"); /* Load the flags */ |
| 1827 |
/* All condition codes can be inverted by changing the LSB */ |
| 1828 |
comprintf("\tsetcc(val,%d);\n", |
| 1829 |
cond_codes_x86[curi->cc]^1); break; |
| 1830 |
default: abort(); |
| 1831 |
} |
| 1832 |
comprintf("\tsub_b_ri(val,1);\n"); |
| 1833 |
genastore ("val", curi->smode, "srcreg", curi->size, "src"); |
| 1834 |
break; |
| 1835 |
case i_DIVU: |
| 1836 |
isjump; |
| 1837 |
failure; |
| 1838 |
break; |
| 1839 |
case i_DIVS: |
| 1840 |
isjump; |
| 1841 |
failure; |
| 1842 |
break; |
| 1843 |
case i_MULU: |
| 1844 |
/* failure; /* NEW: from "Ipswitch Town" release */ |
| 1845 |
comprintf("\tdont_care_flags();\n"); |
| 1846 |
genamode (curi->smode, "srcreg", sz_word, "src", 1, 0); |
| 1847 |
genamode (curi->dmode, "dstreg", sz_word, "dst", 1, 0); |
| 1848 |
/* To do 16x16 unsigned multiplication, we actually use |
| 1849 |
32x32 signed, and zero-extend the registers first. |
| 1850 |
That solves the problem of MUL needing dedicated registers |
| 1851 |
on the x86 */ |
| 1852 |
comprintf("\tzero_extend_16_rr(scratchie,src);\n" |
| 1853 |
"\tzero_extend_16_rr(dst,dst);\n" |
| 1854 |
"\timul_32_32(dst,scratchie);\n"); |
| 1855 |
genflags (flag_logical, sz_long, "dst", "", ""); |
| 1856 |
genastore ("dst", curi->dmode, "dstreg", sz_long, "dst"); |
| 1857 |
break; |
| 1858 |
case i_MULS: |
| 1859 |
/* failure; /* NEW: from "Ipswitch Town" release */ |
| 1860 |
comprintf("\tdont_care_flags();\n"); |
| 1861 |
genamode (curi->smode, "srcreg", sz_word, "src", 1, 0); |
| 1862 |
genamode (curi->dmode, "dstreg", sz_word, "dst", 1, 0); |
| 1863 |
comprintf("\tsign_extend_16_rr(scratchie,src);\n" |
| 1864 |
"\tsign_extend_16_rr(dst,dst);\n" |
| 1865 |
"\timul_32_32(dst,scratchie);\n"); |
| 1866 |
genflags (flag_logical, sz_long, "dst", "", ""); |
| 1867 |
genastore ("dst", curi->dmode, "dstreg", sz_long, "dst"); |
| 1868 |
break; |
| 1869 |
case i_CHK: |
| 1870 |
isjump; |
| 1871 |
failure; |
| 1872 |
break; |
| 1873 |
|
| 1874 |
case i_CHK2: |
| 1875 |
isjump; |
| 1876 |
failure; |
| 1877 |
break; |
| 1878 |
|
| 1879 |
case i_ASR: |
| 1880 |
mayfail; |
| 1881 |
if (curi->smode==Dreg) { |
| 1882 |
comprintf("if ((uae_u32)srcreg==(uae_u32)dstreg) {\n" |
| 1883 |
" FAIL(1);\n" |
| 1884 |
" return;\n" |
| 1885 |
"} \n"); |
| 1886 |
start_brace(); |
| 1887 |
} |
| 1888 |
comprintf("\tdont_care_flags();\n"); |
| 1889 |
|
| 1890 |
genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0); |
| 1891 |
genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0); |
| 1892 |
if (curi->smode!=immi) { |
| 1893 |
/* failure; /* UNTESTED: NEW: from "Ipswitch Town" release */ |
| 1894 |
if (!noflags) { |
| 1895 |
uses_cmov; |
| 1896 |
start_brace(); |
| 1897 |
comprintf("\tint highmask;\n" |
| 1898 |
"\tint width;\n" |
| 1899 |
"\tint cdata=scratchie++;\n" |
| 1900 |
"\tint tmpcnt=scratchie++;\n" |
| 1901 |
"\tint highshift=scratchie++;\n"); |
| 1902 |
comprintf("\tmov_l_rr(tmpcnt,cnt);\n" |
| 1903 |
"\tand_l_ri(tmpcnt,63);\n" |
| 1904 |
"\tmov_l_ri(cdata,0);\n" |
| 1905 |
"\tcmov_l_rr(cdata,data,5);\n"); |
| 1906 |
/* cdata is now either data (for shift count!=0) or |
| 1907 |
0 (for shift count==0) */ |
| 1908 |
switch(curi->size) { |
| 1909 |
case sz_byte: comprintf("\tshra_b_rr(data,cnt);\n" |
| 1910 |
"\thighmask=0x38;\n" |
| 1911 |
"\twidth=8;\n"); |
| 1912 |
break; |
| 1913 |
case sz_word: comprintf("\tshra_w_rr(data,cnt);\n" |
| 1914 |
"\thighmask=0x30;\n" |
| 1915 |
"\twidth=16;\n"); |
| 1916 |
break; |
| 1917 |
case sz_long: comprintf("\tshra_l_rr(data,cnt);\n" |
| 1918 |
"\thighmask=0x20;\n" |
| 1919 |
"\twidth=32;\n"); |
| 1920 |
break; |
| 1921 |
default: abort(); |
| 1922 |
} |
| 1923 |
comprintf("test_l_ri(cnt,highmask);\n" |
| 1924 |
"mov_l_ri(highshift,0);\n" |
| 1925 |
"mov_l_ri(scratchie,width/2);\n" |
| 1926 |
"cmov_l_rr(highshift,scratchie,5);\n"); |
| 1927 |
/* The x86 masks out bits, so we now make sure that things |
| 1928 |
really get shifted as much as planned */ |
| 1929 |
switch(curi->size) { |
| 1930 |
case sz_byte: comprintf("\tshra_b_rr(data,highshift);\n");break; |
| 1931 |
case sz_word: comprintf("\tshra_w_rr(data,highshift);\n");break; |
| 1932 |
case sz_long: comprintf("\tshra_l_rr(data,highshift);\n");break; |
| 1933 |
default: abort(); |
| 1934 |
} |
| 1935 |
/* And again */ |
| 1936 |
switch(curi->size) { |
| 1937 |
case sz_byte: comprintf("\tshra_b_rr(data,highshift);\n");break; |
| 1938 |
case sz_word: comprintf("\tshra_w_rr(data,highshift);\n");break; |
| 1939 |
case sz_long: comprintf("\tshra_l_rr(data,highshift);\n");break; |
| 1940 |
default: abort(); |
| 1941 |
} |
| 1942 |
|
| 1943 |
/* Result of shift is now in data. Now we need to determine |
| 1944 |
the carry by shifting cdata one less */ |
| 1945 |
comprintf("\tsub_l_ri(tmpcnt,1);\n"); |
| 1946 |
switch(curi->size) { |
| 1947 |
case sz_byte: comprintf("\tshra_b_rr(cdata,tmpcnt);\n");break; |
| 1948 |
case sz_word: comprintf("\tshra_w_rr(cdata,tmpcnt);\n");break; |
| 1949 |
case sz_long: comprintf("\tshra_l_rr(cdata,tmpcnt);\n");break; |
| 1950 |
default: abort(); |
| 1951 |
} |
| 1952 |
/* If the shift count was higher than the width, we need |
| 1953 |
to pick up the sign from data */ |
| 1954 |
comprintf("test_l_ri(tmpcnt,highmask);\n" |
| 1955 |
"cmov_l_rr(cdata,data,5);\n"); |
| 1956 |
/* And create the flags */ |
| 1957 |
comprintf("\tstart_needflags();\n"); |
| 1958 |
comprintf("\tif (needed_flags & FLAG_ZNV)\n"); |
| 1959 |
switch(curi->size) { |
| 1960 |
case sz_byte: comprintf("\t test_b_rr(data,data);\n"); break; |
| 1961 |
case sz_word: comprintf("\t test_w_rr(data,data);\n"); break; |
| 1962 |
case sz_long: comprintf("\t test_l_rr(data,data);\n"); break; |
| 1963 |
} |
| 1964 |
comprintf("\t bt_l_ri(cdata,0);\n"); /* Set C */ |
| 1965 |
comprintf("\t live_flags();\n"); |
| 1966 |
comprintf("\t end_needflags();\n"); |
| 1967 |
comprintf("\t duplicate_carry();\n"); |
| 1968 |
comprintf("if (!(needed_flags & FLAG_CZNV)) dont_care_flags();\n"); |
| 1969 |
genastore ("data", curi->dmode, "dstreg", curi->size, "data"); |
| 1970 |
} |
| 1971 |
else { |
| 1972 |
uses_cmov; |
| 1973 |
start_brace(); |
| 1974 |
comprintf("\tint highmask;\n" |
| 1975 |
"\tint width;\n" |
| 1976 |
"\tint highshift=scratchie++;\n"); |
| 1977 |
switch(curi->size) { |
| 1978 |
case sz_byte: comprintf("\tshra_b_rr(data,cnt);\n" |
| 1979 |
"\thighmask=0x38;\n" |
| 1980 |
"\twidth=8;\n"); |
| 1981 |
break; |
| 1982 |
case sz_word: comprintf("\tshra_w_rr(data,cnt);\n" |
| 1983 |
"\thighmask=0x30;\n" |
| 1984 |
"\twidth=16;\n"); |
| 1985 |
break; |
| 1986 |
case sz_long: comprintf("\tshra_l_rr(data,cnt);\n" |
| 1987 |
"\thighmask=0x20;\n" |
| 1988 |
"\twidth=32;\n"); |
| 1989 |
break; |
| 1990 |
default: abort(); |
| 1991 |
} |
| 1992 |
comprintf("test_l_ri(cnt,highmask);\n" |
| 1993 |
"mov_l_ri(highshift,0);\n" |
| 1994 |
"mov_l_ri(scratchie,width/2);\n" |
| 1995 |
"cmov_l_rr(highshift,scratchie,5);\n"); |
| 1996 |
/* The x86 masks out bits, so we now make sure that things |
| 1997 |
really get shifted as much as planned */ |
| 1998 |
switch(curi->size) { |
| 1999 |
case sz_byte: comprintf("\tshra_b_rr(data,highshift);\n");break; |
| 2000 |
case sz_word: comprintf("\tshra_w_rr(data,highshift);\n");break; |
| 2001 |
case sz_long: comprintf("\tshra_l_rr(data,highshift);\n");break; |
| 2002 |
default: abort(); |
| 2003 |
} |
| 2004 |
/* And again */ |
| 2005 |
switch(curi->size) { |
| 2006 |
case sz_byte: comprintf("\tshra_b_rr(data,highshift);\n");break; |
| 2007 |
case sz_word: comprintf("\tshra_w_rr(data,highshift);\n");break; |
| 2008 |
case sz_long: comprintf("\tshra_l_rr(data,highshift);\n");break; |
| 2009 |
default: abort(); |
| 2010 |
} |
| 2011 |
genastore ("data", curi->dmode, "dstreg", curi->size, "data"); |
| 2012 |
} |
| 2013 |
} |
| 2014 |
else { |
| 2015 |
start_brace(); |
| 2016 |
comprintf("\tint tmp=scratchie++;\n" |
| 2017 |
"\tint bp;\n" |
| 2018 |
"\tmov_l_rr(tmp,data);\n"); |
| 2019 |
switch(curi->size) { |
| 2020 |
case sz_byte: comprintf("\tshra_b_ri(data,srcreg);\n" |
| 2021 |
"\tbp=srcreg-1;\n"); break; |
| 2022 |
case sz_word: comprintf("\tshra_w_ri(data,srcreg);\n" |
| 2023 |
"\tbp=srcreg-1;\n"); break; |
| 2024 |
case sz_long: comprintf("\tshra_l_ri(data,srcreg);\n" |
| 2025 |
"\tbp=srcreg-1;\n"); break; |
| 2026 |
default: abort(); |
| 2027 |
} |
| 2028 |
|
| 2029 |
if (!noflags) { |
| 2030 |
comprintf("\tstart_needflags();\n"); |
| 2031 |
comprintf("\tif (needed_flags & FLAG_ZNV)\n"); |
| 2032 |
switch(curi->size) { |
| 2033 |
case sz_byte: comprintf("\t test_b_rr(data,data);\n"); break; |
| 2034 |
case sz_word: comprintf("\t test_w_rr(data,data);\n"); break; |
| 2035 |
case sz_long: comprintf("\t test_l_rr(data,data);\n"); break; |
| 2036 |
} |
| 2037 |
comprintf("\t bt_l_ri(tmp,bp);\n"); /* Set C */ |
| 2038 |
comprintf("\t live_flags();\n"); |
| 2039 |
comprintf("\t end_needflags();\n"); |
| 2040 |
comprintf("\t duplicate_carry();\n"); |
| 2041 |
comprintf("if (!(needed_flags & FLAG_CZNV)) dont_care_flags();\n"); |
| 2042 |
} |
| 2043 |
genastore ("data", curi->dmode, "dstreg", curi->size, "data"); |
| 2044 |
} |
| 2045 |
break; |
| 2046 |
|
| 2047 |
case i_ASL: |
| 2048 |
/* failure; /* NEW: from "Ipswitch Town" release */ |
| 2049 |
mayfail; |
| 2050 |
if (curi->smode==Dreg) { |
| 2051 |
comprintf("if ((uae_u32)srcreg==(uae_u32)dstreg) {\n" |
| 2052 |
" FAIL(1);\n" |
| 2053 |
" return;\n" |
| 2054 |
"} \n"); |
| 2055 |
start_brace(); |
| 2056 |
} |
| 2057 |
comprintf("\tdont_care_flags();\n"); |
| 2058 |
/* Except for the handling of the V flag, this is identical to |
| 2059 |
LSL. The handling of V is, uhm, unpleasant, so if it's needed, |
| 2060 |
let the normal emulation handle it. Shoulders of giants kinda |
| 2061 |
thing ;-) */ |
| 2062 |
comprintf("if (needed_flags & FLAG_V) {\n" |
| 2063 |
" FAIL(1);\n" |
| 2064 |
" return;\n" |
| 2065 |
"} \n"); |
| 2066 |
|
| 2067 |
genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0); |
| 2068 |
genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0); |
| 2069 |
if (curi->smode!=immi) { |
| 2070 |
if (!noflags) { |
| 2071 |
uses_cmov; |
| 2072 |
start_brace(); |
| 2073 |
comprintf("\tint highmask;\n" |
| 2074 |
"\tint cdata=scratchie++;\n" |
| 2075 |
"\tint tmpcnt=scratchie++;\n"); |
| 2076 |
comprintf("\tmov_l_rr(tmpcnt,cnt);\n" |
| 2077 |
"\tand_l_ri(tmpcnt,63);\n" |
| 2078 |
"\tmov_l_ri(cdata,0);\n" |
| 2079 |
"\tcmov_l_rr(cdata,data,5);\n"); |
| 2080 |
/* cdata is now either data (for shift count!=0) or |
| 2081 |
0 (for shift count==0) */ |
| 2082 |
switch(curi->size) { |
| 2083 |
case sz_byte: comprintf("\tshll_b_rr(data,cnt);\n" |
| 2084 |
"\thighmask=0x38;\n"); |
| 2085 |
break; |
| 2086 |
case sz_word: comprintf("\tshll_w_rr(data,cnt);\n" |
| 2087 |
"\thighmask=0x30;\n"); |
| 2088 |
break; |
| 2089 |
case sz_long: comprintf("\tshll_l_rr(data,cnt);\n" |
| 2090 |
"\thighmask=0x20;\n"); |
| 2091 |
break; |
| 2092 |
default: abort(); |
| 2093 |
} |
| 2094 |
comprintf("test_l_ri(cnt,highmask);\n" |
| 2095 |
"mov_l_ri(scratchie,0);\n" |
| 2096 |
"cmov_l_rr(scratchie,data,4);\n"); |
| 2097 |
switch(curi->size) { |
| 2098 |
case sz_byte: comprintf("\tmov_b_rr(data,scratchie);\n");break; |
| 2099 |
case sz_word: comprintf("\tmov_w_rr(data,scratchie);\n");break; |
| 2100 |
case sz_long: comprintf("\tmov_l_rr(data,scratchie);\n");break; |
| 2101 |
default: abort(); |
| 2102 |
} |
| 2103 |
/* Result of shift is now in data. Now we need to determine |
| 2104 |
the carry by shifting cdata one less */ |
| 2105 |
comprintf("\tsub_l_ri(tmpcnt,1);\n"); |
| 2106 |
switch(curi->size) { |
| 2107 |
case sz_byte: comprintf("\tshll_b_rr(cdata,tmpcnt);\n");break; |
| 2108 |
case sz_word: comprintf("\tshll_w_rr(cdata,tmpcnt);\n");break; |
| 2109 |
case sz_long: comprintf("\tshll_l_rr(cdata,tmpcnt);\n");break; |
| 2110 |
default: abort(); |
| 2111 |
} |
| 2112 |
comprintf("test_l_ri(tmpcnt,highmask);\n" |
| 2113 |
"mov_l_ri(scratchie,0);\n" |
| 2114 |
"cmov_l_rr(cdata,scratchie,5);\n"); |
| 2115 |
/* And create the flags */ |
| 2116 |
comprintf("\tstart_needflags();\n"); |
| 2117 |
|
| 2118 |
comprintf("\tif (needed_flags & FLAG_ZNV)\n"); |
| 2119 |
switch(curi->size) { |
| 2120 |
case sz_byte: comprintf("\t test_b_rr(data,data);\n"); |
| 2121 |
comprintf("\t bt_l_ri(cdata,7);\n"); break; |
| 2122 |
case sz_word: comprintf("\t test_w_rr(data,data);\n"); |
| 2123 |
comprintf("\t bt_l_ri(cdata,15);\n"); break; |
| 2124 |
case sz_long: comprintf("\t test_l_rr(data,data);\n"); |
| 2125 |
comprintf("\t bt_l_ri(cdata,31);\n"); break; |
| 2126 |
} |
| 2127 |
comprintf("\t live_flags();\n"); |
| 2128 |
comprintf("\t end_needflags();\n"); |
| 2129 |
comprintf("\t duplicate_carry();\n"); |
| 2130 |
comprintf("if (!(needed_flags & FLAG_CZNV)) dont_care_flags();\n"); |
| 2131 |
genastore ("data", curi->dmode, "dstreg", curi->size, "data"); |
| 2132 |
} |
| 2133 |
else { |
| 2134 |
uses_cmov; |
| 2135 |
start_brace(); |
| 2136 |
comprintf("\tint highmask;\n"); |
| 2137 |
switch(curi->size) { |
| 2138 |
case sz_byte: comprintf("\tshll_b_rr(data,cnt);\n" |
| 2139 |
"\thighmask=0x38;\n"); |
| 2140 |
break; |
| 2141 |
case sz_word: comprintf("\tshll_w_rr(data,cnt);\n" |
| 2142 |
"\thighmask=0x30;\n"); |
| 2143 |
break; |
| 2144 |
case sz_long: comprintf("\tshll_l_rr(data,cnt);\n" |
| 2145 |
"\thighmask=0x20;\n"); |
| 2146 |
break; |
| 2147 |
default: abort(); |
| 2148 |
} |
| 2149 |
comprintf("test_l_ri(cnt,highmask);\n" |
| 2150 |
"mov_l_ri(scratchie,0);\n" |
| 2151 |
"cmov_l_rr(scratchie,data,4);\n"); |
| 2152 |
switch(curi->size) { |
| 2153 |
case sz_byte: comprintf("\tmov_b_rr(data,scratchie);\n");break; |
| 2154 |
case sz_word: comprintf("\tmov_w_rr(data,scratchie);\n");break; |
| 2155 |
case sz_long: comprintf("\tmov_l_rr(data,scratchie);\n");break; |
| 2156 |
default: abort(); |
| 2157 |
} |
| 2158 |
genastore ("data", curi->dmode, "dstreg", curi->size, "data"); |
| 2159 |
} |
| 2160 |
} |
| 2161 |
else { |
| 2162 |
start_brace(); |
| 2163 |
comprintf("\tint tmp=scratchie++;\n" |
| 2164 |
"\tint bp;\n" |
| 2165 |
"\tmov_l_rr(tmp,data);\n"); |
| 2166 |
switch(curi->size) { |
| 2167 |
case sz_byte: comprintf("\tshll_b_ri(data,srcreg);\n" |
| 2168 |
"\tbp=8-srcreg;\n"); break; |
| 2169 |
case sz_word: comprintf("\tshll_w_ri(data,srcreg);\n" |
| 2170 |
"\tbp=16-srcreg;\n"); break; |
| 2171 |
case sz_long: comprintf("\tshll_l_ri(data,srcreg);\n" |
| 2172 |
"\tbp=32-srcreg;\n"); break; |
| 2173 |
default: abort(); |
| 2174 |
} |
| 2175 |
|
| 2176 |
if (!noflags) { |
| 2177 |
comprintf("\tstart_needflags();\n"); |
| 2178 |
comprintf("\tif (needed_flags & FLAG_ZNV)\n"); |
| 2179 |
switch(curi->size) { |
| 2180 |
case sz_byte: comprintf("\t test_b_rr(data,data);\n"); break; |
| 2181 |
case sz_word: comprintf("\t test_w_rr(data,data);\n"); break; |
| 2182 |
case sz_long: comprintf("\t test_l_rr(data,data);\n"); break; |
| 2183 |
} |
| 2184 |
comprintf("\t bt_l_ri(tmp,bp);\n"); /* Set C */ |
| 2185 |
comprintf("\t live_flags();\n"); |
| 2186 |
comprintf("\t end_needflags();\n"); |
| 2187 |
comprintf("\t duplicate_carry();\n"); |
| 2188 |
comprintf("if (!(needed_flags & FLAG_CZNV)) dont_care_flags();\n"); |
| 2189 |
} |
| 2190 |
genastore ("data", curi->dmode, "dstreg", curi->size, "data"); |
| 2191 |
} |
| 2192 |
break; |
| 2193 |
|
| 2194 |
case i_LSR: |
| 2195 |
/* failure; /* NEW: from "Ipswitch Town" release */ |
| 2196 |
mayfail; |
| 2197 |
if (curi->smode==Dreg) { |
| 2198 |
comprintf("if ((uae_u32)srcreg==(uae_u32)dstreg) {\n" |
| 2199 |
" FAIL(1);\n" |
| 2200 |
" return;\n" |
| 2201 |
"} \n"); |
| 2202 |
start_brace(); |
| 2203 |
} |
| 2204 |
comprintf("\tdont_care_flags();\n"); |
| 2205 |
|
| 2206 |
genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0); |
| 2207 |
genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0); |
| 2208 |
if (curi->smode!=immi) { |
| 2209 |
if (!noflags) { |
| 2210 |
uses_cmov; |
| 2211 |
start_brace(); |
| 2212 |
comprintf("\tint highmask;\n" |
| 2213 |
"\tint cdata=scratchie++;\n" |
| 2214 |
"\tint tmpcnt=scratchie++;\n"); |
| 2215 |
comprintf("\tmov_l_rr(tmpcnt,cnt);\n" |
| 2216 |
"\tand_l_ri(tmpcnt,63);\n" |
| 2217 |
"\tmov_l_ri(cdata,0);\n" |
| 2218 |
"\tcmov_l_rr(cdata,data,5);\n"); |
| 2219 |
/* cdata is now either data (for shift count!=0) or |
| 2220 |
0 (for shift count==0) */ |
| 2221 |
switch(curi->size) { |
| 2222 |
case sz_byte: comprintf("\tshrl_b_rr(data,cnt);\n" |
| 2223 |
"\thighmask=0x38;\n"); |
| 2224 |
break; |
| 2225 |
case sz_word: comprintf("\tshrl_w_rr(data,cnt);\n" |
| 2226 |
"\thighmask=0x30;\n"); |
| 2227 |
break; |
| 2228 |
case sz_long: comprintf("\tshrl_l_rr(data,cnt);\n" |
| 2229 |
"\thighmask=0x20;\n"); |
| 2230 |
break; |
| 2231 |
default: abort(); |
| 2232 |
} |
| 2233 |
comprintf("test_l_ri(cnt,highmask);\n" |
| 2234 |
"mov_l_ri(scratchie,0);\n" |
| 2235 |
"cmov_l_rr(scratchie,data,4);\n"); |
| 2236 |
switch(curi->size) { |
| 2237 |
case sz_byte: comprintf("\tmov_b_rr(data,scratchie);\n");break; |
| 2238 |
case sz_word: comprintf("\tmov_w_rr(data,scratchie);\n");break; |
| 2239 |
case sz_long: comprintf("\tmov_l_rr(data,scratchie);\n");break; |
| 2240 |
default: abort(); |
| 2241 |
} |
| 2242 |
/* Result of shift is now in data. Now we need to determine |
| 2243 |
the carry by shifting cdata one less */ |
| 2244 |
comprintf("\tsub_l_ri(tmpcnt,1);\n"); |
| 2245 |
switch(curi->size) { |
| 2246 |
case sz_byte: comprintf("\tshrl_b_rr(cdata,tmpcnt);\n");break; |
| 2247 |
case sz_word: comprintf("\tshrl_w_rr(cdata,tmpcnt);\n");break; |
| 2248 |
case sz_long: comprintf("\tshrl_l_rr(cdata,tmpcnt);\n");break; |
| 2249 |
default: abort(); |
| 2250 |
} |
| 2251 |
comprintf("test_l_ri(tmpcnt,highmask);\n" |
| 2252 |
"mov_l_ri(scratchie,0);\n" |
| 2253 |
"cmov_l_rr(cdata,scratchie,5);\n"); |
| 2254 |
/* And create the flags */ |
| 2255 |
comprintf("\tstart_needflags();\n"); |
| 2256 |
comprintf("\tif (needed_flags & FLAG_ZNV)\n"); |
| 2257 |
switch(curi->size) { |
| 2258 |
case sz_byte: comprintf("\t test_b_rr(data,data);\n"); break; |
| 2259 |
case sz_word: comprintf("\t test_w_rr(data,data);\n"); break; |
| 2260 |
case sz_long: comprintf("\t test_l_rr(data,data);\n"); break; |
| 2261 |
} |
| 2262 |
comprintf("\t bt_l_ri(cdata,0);\n"); /* Set C */ |
| 2263 |
comprintf("\t live_flags();\n"); |
| 2264 |
comprintf("\t end_needflags();\n"); |
| 2265 |
comprintf("\t duplicate_carry();\n"); |
| 2266 |
comprintf("if (!(needed_flags & FLAG_CZNV)) dont_care_flags();\n"); |
| 2267 |
genastore ("data", curi->dmode, "dstreg", curi->size, "data"); |
| 2268 |
} |
| 2269 |
else { |
| 2270 |
uses_cmov; |
| 2271 |
start_brace(); |
| 2272 |
comprintf("\tint highmask;\n"); |
| 2273 |
switch(curi->size) { |
| 2274 |
case sz_byte: comprintf("\tshrl_b_rr(data,cnt);\n" |
| 2275 |
"\thighmask=0x38;\n"); |
| 2276 |
break; |
| 2277 |
case sz_word: comprintf("\tshrl_w_rr(data,cnt);\n" |
| 2278 |
"\thighmask=0x30;\n"); |
| 2279 |
break; |
| 2280 |
case sz_long: comprintf("\tshrl_l_rr(data,cnt);\n" |
| 2281 |
"\thighmask=0x20;\n"); |
| 2282 |
break; |
| 2283 |
default: abort(); |
| 2284 |
} |
| 2285 |
comprintf("test_l_ri(cnt,highmask);\n" |
| 2286 |
"mov_l_ri(scratchie,0);\n" |
| 2287 |
"cmov_l_rr(scratchie,data,4);\n"); |
| 2288 |
switch(curi->size) { |
| 2289 |
case sz_byte: comprintf("\tmov_b_rr(data,scratchie);\n");break; |
| 2290 |
case sz_word: comprintf("\tmov_w_rr(data,scratchie);\n");break; |
| 2291 |
case sz_long: comprintf("\tmov_l_rr(data,scratchie);\n");break; |
| 2292 |
default: abort(); |
| 2293 |
} |
| 2294 |
genastore ("data", curi->dmode, "dstreg", curi->size, "data"); |
| 2295 |
} |
| 2296 |
} |
| 2297 |
else { |
| 2298 |
start_brace(); |
| 2299 |
comprintf("\tint tmp=scratchie++;\n" |
| 2300 |
"\tint bp;\n" |
| 2301 |
"\tmov_l_rr(tmp,data);\n"); |
| 2302 |
switch(curi->size) { |
| 2303 |
case sz_byte: comprintf("\tshrl_b_ri(data,srcreg);\n" |
| 2304 |
"\tbp=srcreg-1;\n"); break; |
| 2305 |
case sz_word: comprintf("\tshrl_w_ri(data,srcreg);\n" |
| 2306 |
"\tbp=srcreg-1;\n"); break; |
| 2307 |
case sz_long: comprintf("\tshrl_l_ri(data,srcreg);\n" |
| 2308 |
"\tbp=srcreg-1;\n"); break; |
| 2309 |
default: abort(); |
| 2310 |
} |
| 2311 |
|
| 2312 |
if (!noflags) { |
| 2313 |
comprintf("\tstart_needflags();\n"); |
| 2314 |
comprintf("\tif (needed_flags & FLAG_ZNV)\n"); |
| 2315 |
switch(curi->size) { |
| 2316 |
case sz_byte: comprintf("\t test_b_rr(data,data);\n"); break; |
| 2317 |
case sz_word: comprintf("\t test_w_rr(data,data);\n"); break; |
| 2318 |
case sz_long: comprintf("\t test_l_rr(data,data);\n"); break; |
| 2319 |
} |
| 2320 |
comprintf("\t bt_l_ri(tmp,bp);\n"); /* Set C */ |
| 2321 |
comprintf("\t live_flags();\n"); |
| 2322 |
comprintf("\t end_needflags();\n"); |
| 2323 |
comprintf("\t duplicate_carry();\n"); |
| 2324 |
comprintf("if (!(needed_flags & FLAG_CZNV)) dont_care_flags();\n"); |
| 2325 |
} |
| 2326 |
genastore ("data", curi->dmode, "dstreg", curi->size, "data"); |
| 2327 |
} |
| 2328 |
break; |
| 2329 |
|
| 2330 |
case i_LSL: |
| 2331 |
mayfail; |
| 2332 |
if (curi->smode==Dreg) { |
| 2333 |
comprintf("if ((uae_u32)srcreg==(uae_u32)dstreg) {\n" |
| 2334 |
" FAIL(1);\n" |
| 2335 |
" return;\n" |
| 2336 |
"} \n"); |
| 2337 |
start_brace(); |
| 2338 |
} |
| 2339 |
comprintf("\tdont_care_flags();\n"); |
| 2340 |
|
| 2341 |
genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0); |
| 2342 |
genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0); |
| 2343 |
if (curi->smode!=immi) { |
| 2344 |
/* failure; /* UNTESTED: NEW: from "Ipswitch Town" release */ |
| 2345 |
if (!noflags) { |
| 2346 |
uses_cmov; |
| 2347 |
start_brace(); |
| 2348 |
comprintf("\tint highmask;\n" |
| 2349 |
"\tint cdata=scratchie++;\n" |
| 2350 |
"\tint tmpcnt=scratchie++;\n"); |
| 2351 |
comprintf("\tmov_l_rr(tmpcnt,cnt);\n" |
| 2352 |
"\tand_l_ri(tmpcnt,63);\n" |
| 2353 |
"\tmov_l_ri(cdata,0);\n" |
| 2354 |
"\tcmov_l_rr(cdata,data,5);\n"); |
| 2355 |
/* cdata is now either data (for shift count!=0) or |
| 2356 |
0 (for shift count==0) */ |
| 2357 |
switch(curi->size) { |
| 2358 |
case sz_byte: comprintf("\tshll_b_rr(data,cnt);\n" |
| 2359 |
"\thighmask=0x38;\n"); |
| 2360 |
break; |
| 2361 |
case sz_word: comprintf("\tshll_w_rr(data,cnt);\n" |
| 2362 |
"\thighmask=0x30;\n"); |
| 2363 |
break; |
| 2364 |
case sz_long: comprintf("\tshll_l_rr(data,cnt);\n" |
| 2365 |
"\thighmask=0x20;\n"); |
| 2366 |
break; |
| 2367 |
default: abort(); |
| 2368 |
} |
| 2369 |
comprintf("test_l_ri(cnt,highmask);\n" |
| 2370 |
"mov_l_ri(scratchie,0);\n" |
| 2371 |
"cmov_l_rr(scratchie,data,4);\n"); |
| 2372 |
switch(curi->size) { |
| 2373 |
case sz_byte: comprintf("\tmov_b_rr(data,scratchie);\n");break; |
| 2374 |
case sz_word: comprintf("\tmov_w_rr(data,scratchie);\n");break; |
| 2375 |
case sz_long: comprintf("\tmov_l_rr(data,scratchie);\n");break; |
| 2376 |
default: abort(); |
| 2377 |
} |
| 2378 |
/* Result of shift is now in data. Now we need to determine |
| 2379 |
the carry by shifting cdata one less */ |
| 2380 |
comprintf("\tsub_l_ri(tmpcnt,1);\n"); |
| 2381 |
switch(curi->size) { |
| 2382 |
case sz_byte: comprintf("\tshll_b_rr(cdata,tmpcnt);\n");break; |
| 2383 |
case sz_word: comprintf("\tshll_w_rr(cdata,tmpcnt);\n");break; |
| 2384 |
case sz_long: comprintf("\tshll_l_rr(cdata,tmpcnt);\n");break; |
| 2385 |
default: abort(); |
| 2386 |
} |
| 2387 |
comprintf("test_l_ri(tmpcnt,highmask);\n" |
| 2388 |
"mov_l_ri(scratchie,0);\n" |
| 2389 |
"cmov_l_rr(cdata,scratchie,5);\n"); |
| 2390 |
/* And create the flags */ |
| 2391 |
comprintf("\tstart_needflags();\n"); |
| 2392 |
comprintf("\tif (needed_flags & FLAG_ZNV)\n"); |
| 2393 |
switch(curi->size) { |
| 2394 |
case sz_byte: comprintf("\t test_b_rr(data,data);\n"); |
| 2395 |
comprintf("\t bt_l_ri(cdata,7);\n"); break; |
| 2396 |
case sz_word: comprintf("\t test_w_rr(data,data);\n"); |
| 2397 |
comprintf("\t bt_l_ri(cdata,15);\n"); break; |
| 2398 |
case sz_long: comprintf("\t test_l_rr(data,data);\n"); |
| 2399 |
comprintf("\t bt_l_ri(cdata,31);\n"); break; |
| 2400 |
} |
| 2401 |
comprintf("\t live_flags();\n"); |
| 2402 |
comprintf("\t end_needflags();\n"); |
| 2403 |
comprintf("\t duplicate_carry();\n"); |
| 2404 |
comprintf("if (!(needed_flags & FLAG_CZNV)) dont_care_flags();\n"); |
| 2405 |
genastore ("data", curi->dmode, "dstreg", curi->size, "data"); |
| 2406 |
} |
| 2407 |
else { |
| 2408 |
uses_cmov; |
| 2409 |
start_brace(); |
| 2410 |
comprintf("\tint highmask;\n"); |
| 2411 |
switch(curi->size) { |
| 2412 |
case sz_byte: comprintf("\tshll_b_rr(data,cnt);\n" |
| 2413 |
"\thighmask=0x38;\n"); |
| 2414 |
break; |
| 2415 |
case sz_word: comprintf("\tshll_w_rr(data,cnt);\n" |
| 2416 |
"\thighmask=0x30;\n"); |
| 2417 |
break; |
| 2418 |
case sz_long: comprintf("\tshll_l_rr(data,cnt);\n" |
| 2419 |
"\thighmask=0x20;\n"); |
| 2420 |
break; |
| 2421 |
default: abort(); |
| 2422 |
} |
| 2423 |
comprintf("test_l_ri(cnt,highmask);\n" |
| 2424 |
"mov_l_ri(scratchie,0);\n" |
| 2425 |
"cmov_l_rr(scratchie,data,4);\n"); |
| 2426 |
switch(curi->size) { |
| 2427 |
case sz_byte: comprintf("\tmov_b_rr(data,scratchie);\n");break; |
| 2428 |
case sz_word: comprintf("\tmov_w_rr(data,scratchie);\n");break; |
| 2429 |
case sz_long: comprintf("\tmov_l_rr(data,scratchie);\n");break; |
| 2430 |
default: abort(); |
| 2431 |
} |
| 2432 |
genastore ("data", curi->dmode, "dstreg", curi->size, "data"); |
| 2433 |
} |
| 2434 |
} |
| 2435 |
else { |
| 2436 |
start_brace(); |
| 2437 |
comprintf("\tint tmp=scratchie++;\n" |
| 2438 |
"\tint bp;\n" |
| 2439 |
"\tmov_l_rr(tmp,data);\n"); |
| 2440 |
switch(curi->size) { |
| 2441 |
case sz_byte: comprintf("\tshll_b_ri(data,srcreg);\n" |
| 2442 |
"\tbp=8-srcreg;\n"); break; |
| 2443 |
case sz_word: comprintf("\tshll_w_ri(data,srcreg);\n" |
| 2444 |
"\tbp=16-srcreg;\n"); break; |
| 2445 |
case sz_long: comprintf("\tshll_l_ri(data,srcreg);\n" |
| 2446 |
"\tbp=32-srcreg;\n"); break; |
| 2447 |
default: abort(); |
| 2448 |
} |
| 2449 |
|
| 2450 |
if (!noflags) { |
| 2451 |
comprintf("\tstart_needflags();\n"); |
| 2452 |
comprintf("\tif (needed_flags & FLAG_ZNV)\n"); |
| 2453 |
switch(curi->size) { |
| 2454 |
case sz_byte: comprintf("\t test_b_rr(data,data);\n"); break; |
| 2455 |
case sz_word: comprintf("\t test_w_rr(data,data);\n"); break; |
| 2456 |
case sz_long: comprintf("\t test_l_rr(data,data);\n"); break; |
| 2457 |
} |
| 2458 |
comprintf("\t bt_l_ri(tmp,bp);\n"); /* Set C */ |
| 2459 |
comprintf("\t live_flags();\n"); |
| 2460 |
comprintf("\t end_needflags();\n"); |
| 2461 |
comprintf("\t duplicate_carry();\n"); |
| 2462 |
comprintf("if (!(needed_flags & FLAG_CZNV)) dont_care_flags();\n"); |
| 2463 |
} |
| 2464 |
genastore ("data", curi->dmode, "dstreg", curi->size, "data"); |
| 2465 |
} |
| 2466 |
break; |
| 2467 |
|
| 2468 |
case i_ROL: |
| 2469 |
mayfail; |
| 2470 |
if (curi->smode==Dreg) { |
| 2471 |
comprintf("if ((uae_u32)srcreg==(uae_u32)dstreg) {\n" |
| 2472 |
" FAIL(1);\n" |
| 2473 |
" return;\n" |
| 2474 |
"} \n"); |
| 2475 |
start_brace(); |
| 2476 |
} |
| 2477 |
comprintf("\tdont_care_flags();\n"); |
| 2478 |
genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0); |
| 2479 |
genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0); |
| 2480 |
start_brace (); |
| 2481 |
|
| 2482 |
switch(curi->size) { |
| 2483 |
case sz_long: comprintf("\t rol_l_rr(data,cnt);\n"); break; |
| 2484 |
case sz_word: comprintf("\t rol_w_rr(data,cnt);\n"); break; |
| 2485 |
case sz_byte: comprintf("\t rol_b_rr(data,cnt);\n"); break; |
| 2486 |
} |
| 2487 |
|
| 2488 |
if (!noflags) { |
| 2489 |
comprintf("\tstart_needflags();\n"); |
| 2490 |
comprintf("\tif (needed_flags & FLAG_ZNV)\n"); |
| 2491 |
switch(curi->size) { |
| 2492 |
case sz_byte: comprintf("\t test_b_rr(data,data);\n"); break; |
| 2493 |
case sz_word: comprintf("\t test_w_rr(data,data);\n"); break; |
| 2494 |
case sz_long: comprintf("\t test_l_rr(data,data);\n"); break; |
| 2495 |
} |
| 2496 |
comprintf("\t bt_l_ri(data,0x00);\n"); /* Set C */ |
| 2497 |
comprintf("\t live_flags();\n"); |
| 2498 |
comprintf("\t end_needflags();\n"); |
| 2499 |
} |
| 2500 |
genastore ("data", curi->dmode, "dstreg", curi->size, "data"); |
| 2501 |
break; |
| 2502 |
|
| 2503 |
case i_ROR: |
| 2504 |
mayfail; |
| 2505 |
if (curi->smode==Dreg) { |
| 2506 |
comprintf("if ((uae_u32)srcreg==(uae_u32)dstreg) {\n" |
| 2507 |
" FAIL(1);\n" |
| 2508 |
" return;\n" |
| 2509 |
"} \n"); |
| 2510 |
start_brace(); |
| 2511 |
} |
| 2512 |
comprintf("\tdont_care_flags();\n"); |
| 2513 |
genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0); |
| 2514 |
genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0); |
| 2515 |
start_brace (); |
| 2516 |
|
| 2517 |
switch(curi->size) { |
| 2518 |
case sz_long: comprintf("\t ror_l_rr(data,cnt);\n"); break; |
| 2519 |
case sz_word: comprintf("\t ror_w_rr(data,cnt);\n"); break; |
| 2520 |
case sz_byte: comprintf("\t ror_b_rr(data,cnt);\n"); break; |
| 2521 |
} |
| 2522 |
|
| 2523 |
if (!noflags) { |
| 2524 |
comprintf("\tstart_needflags();\n"); |
| 2525 |
comprintf("\tif (needed_flags & FLAG_ZNV)\n"); |
| 2526 |
switch(curi->size) { |
| 2527 |
case sz_byte: comprintf("\t test_b_rr(data,data);\n"); break; |
| 2528 |
case sz_word: comprintf("\t test_w_rr(data,data);\n"); break; |
| 2529 |
case sz_long: comprintf("\t test_l_rr(data,data);\n"); break; |
| 2530 |
} |
| 2531 |
switch(curi->size) { |
| 2532 |
case sz_byte: comprintf("\t bt_l_ri(data,0x07);\n"); break; |
| 2533 |
case sz_word: comprintf("\t bt_l_ri(data,0x0f);\n"); break; |
| 2534 |
case sz_long: comprintf("\t bt_l_ri(data,0x1f);\n"); break; |
| 2535 |
} |
| 2536 |
comprintf("\t live_flags();\n"); |
| 2537 |
comprintf("\t end_needflags();\n"); |
| 2538 |
} |
| 2539 |
genastore ("data", curi->dmode, "dstreg", curi->size, "data"); |
| 2540 |
break; |
| 2541 |
|
| 2542 |
case i_ROXL: |
| 2543 |
failure; |
| 2544 |
break; |
| 2545 |
case i_ROXR: |
| 2546 |
failure; |
| 2547 |
break; |
| 2548 |
case i_ASRW: |
| 2549 |
failure; |
| 2550 |
break; |
| 2551 |
case i_ASLW: |
| 2552 |
failure; |
| 2553 |
break; |
| 2554 |
case i_LSRW: |
| 2555 |
failure; |
| 2556 |
break; |
| 2557 |
case i_LSLW: |
| 2558 |
failure; |
| 2559 |
break; |
| 2560 |
case i_ROLW: |
| 2561 |
failure; |
| 2562 |
break; |
| 2563 |
case i_RORW: |
| 2564 |
failure; |
| 2565 |
break; |
| 2566 |
case i_ROXLW: |
| 2567 |
failure; |
| 2568 |
break; |
| 2569 |
case i_ROXRW: |
| 2570 |
failure; |
| 2571 |
break; |
| 2572 |
case i_MOVEC2: |
| 2573 |
isjump; |
| 2574 |
failure; |
| 2575 |
break; |
| 2576 |
case i_MOVE2C: |
| 2577 |
isjump; |
| 2578 |
failure; |
| 2579 |
break; |
| 2580 |
case i_CAS: |
| 2581 |
failure; |
| 2582 |
break; |
| 2583 |
case i_CAS2: |
| 2584 |
failure; |
| 2585 |
break; |
| 2586 |
case i_MOVES: /* ignore DFC and SFC because we have no MMU */ |
| 2587 |
isjump; |
| 2588 |
failure; |
| 2589 |
break; |
| 2590 |
case i_BKPT: /* only needed for hardware emulators */ |
| 2591 |
isjump; |
| 2592 |
failure; |
| 2593 |
break; |
| 2594 |
case i_CALLM: /* not present in 68030 */ |
| 2595 |
isjump; |
| 2596 |
failure; |
| 2597 |
break; |
| 2598 |
case i_RTM: /* not present in 68030 */ |
| 2599 |
isjump; |
| 2600 |
failure; |
| 2601 |
break; |
| 2602 |
case i_TRAPcc: |
| 2603 |
isjump; |
| 2604 |
failure; |
| 2605 |
break; |
| 2606 |
case i_DIVL: |
| 2607 |
isjump; |
| 2608 |
failure; |
| 2609 |
break; |
| 2610 |
case i_MULL: |
| 2611 |
/* failure; /* NEW: from "Ipswitch Town" release */ |
| 2612 |
if (!noflags) { |
| 2613 |
failure; |
| 2614 |
break; |
| 2615 |
} |
| 2616 |
comprintf("\tuae_u16 extra=%s;\n",gen_nextiword()); |
| 2617 |
comprintf("\tint r2=(extra>>12)&7;\n" |
| 2618 |
"\tint tmp=scratchie++;\n"); |
| 2619 |
|
| 2620 |
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0); |
| 2621 |
/* The two operands are in dst and r2 */ |
| 2622 |
comprintf("\tif (extra&0x0400) {\n" /* Need full 64 bit result */ |
| 2623 |
"\tint r3=(extra&7);\n" |
| 2624 |
"\tmov_l_rr(r3,dst);\n"); /* operands now in r3 and r2 */ |
| 2625 |
comprintf("\tif (extra&0x0800) { \n" /* signed */ |
| 2626 |
"\t\timul_64_32(r2,r3);\n" |
| 2627 |
"\t} else { \n" |
| 2628 |
"\t\tmul_64_32(r2,r3);\n" |
| 2629 |
"\t} \n"); |
| 2630 |
/* The result is in r2/tmp, with r2 holding the lower 32 bits */ |
| 2631 |
comprintf("\t} else {\n"); /* Only want 32 bit result */ |
| 2632 |
/* operands in dst and r2, result foes into r2 */ |
| 2633 |
/* shouldn't matter whether it's signed or unsigned?!? */ |
| 2634 |
comprintf("\timul_32_32(r2,dst);\n" |
| 2635 |
"\t}\n"); |
| 2636 |
break; |
| 2637 |
|
| 2638 |
case i_BFTST: |
| 2639 |
case i_BFEXTU: |
| 2640 |
case i_BFCHG: |
| 2641 |
case i_BFEXTS: |
| 2642 |
case i_BFCLR: |
| 2643 |
case i_BFFFO: |
| 2644 |
case i_BFSET: |
| 2645 |
case i_BFINS: |
| 2646 |
failure; |
| 2647 |
break; |
| 2648 |
case i_PACK: |
| 2649 |
failure; |
| 2650 |
break; |
| 2651 |
case i_UNPK: |
| 2652 |
failure; |
| 2653 |
break; |
| 2654 |
case i_TAS: |
| 2655 |
failure; |
| 2656 |
break; |
| 2657 |
case i_FPP: |
| 2658 |
uses_fpu; |
| 2659 |
#ifdef USE_JIT_FPU |
| 2660 |
mayfail; |
| 2661 |
comprintf("\tuae_u16 extra=%s;\n",gen_nextiword()); |
| 2662 |
swap_opcode(); |
| 2663 |
comprintf("\tcomp_fpp_opp(opcode,extra);\n"); |
| 2664 |
#else |
| 2665 |
failure; |
| 2666 |
#endif |
| 2667 |
break; |
| 2668 |
case i_FBcc: |
| 2669 |
uses_fpu; |
| 2670 |
#ifdef USE_JIT_FPU |
| 2671 |
isjump; |
| 2672 |
uses_cmov; |
| 2673 |
mayfail; |
| 2674 |
swap_opcode(); |
| 2675 |
comprintf("\tcomp_fbcc_opp(opcode);\n"); |
| 2676 |
#else |
| 2677 |
isjump; |
| 2678 |
failure; |
| 2679 |
#endif |
| 2680 |
break; |
| 2681 |
case i_FDBcc: |
| 2682 |
uses_fpu; |
| 2683 |
isjump; |
| 2684 |
failure; |
| 2685 |
break; |
| 2686 |
case i_FScc: |
| 2687 |
uses_fpu; |
| 2688 |
#ifdef USE_JIT_FPU |
| 2689 |
mayfail; |
| 2690 |
uses_cmov; |
| 2691 |
comprintf("\tuae_u16 extra=%s;\n",gen_nextiword()); |
| 2692 |
swap_opcode(); |
| 2693 |
comprintf("\tcomp_fscc_opp(opcode,extra);\n"); |
| 2694 |
#else |
| 2695 |
failure; |
| 2696 |
#endif |
| 2697 |
break; |
| 2698 |
case i_FTRAPcc: |
| 2699 |
uses_fpu; |
| 2700 |
isjump; |
| 2701 |
failure; |
| 2702 |
break; |
| 2703 |
case i_FSAVE: |
| 2704 |
uses_fpu; |
| 2705 |
failure; |
| 2706 |
break; |
| 2707 |
case i_FRESTORE: |
| 2708 |
uses_fpu; |
| 2709 |
failure; |
| 2710 |
break; |
| 2711 |
|
| 2712 |
case i_CINVL: |
| 2713 |
case i_CINVP: |
| 2714 |
case i_CINVA: |
| 2715 |
isjump; /* Not really, but it's probably a good idea to stop |
| 2716 |
translating at this point */ |
| 2717 |
failure; |
| 2718 |
comprintf ("\tflush_icache();\n"); /* Differentiate a bit more? */ |
| 2719 |
break; |
| 2720 |
case i_CPUSHL: |
| 2721 |
case i_CPUSHP: |
| 2722 |
case i_CPUSHA: |
| 2723 |
isjump; /* Not really, but it's probably a good idea to stop |
| 2724 |
translating at this point */ |
| 2725 |
failure; |
| 2726 |
break; |
| 2727 |
case i_MOVE16: |
| 2728 |
genmov16(opcode, curi); |
| 2729 |
break; |
| 2730 |
|
| 2731 |
case i_EMULOP_RETURN: |
| 2732 |
isjump; |
| 2733 |
failure; |
| 2734 |
break; |
| 2735 |
|
| 2736 |
case i_EMULOP: |
| 2737 |
failure; |
| 2738 |
break; |
| 2739 |
|
| 2740 |
case i_MMUOP: |
| 2741 |
isjump; |
| 2742 |
failure; |
| 2743 |
break; |
| 2744 |
default: |
| 2745 |
abort (); |
| 2746 |
break; |
| 2747 |
} |
| 2748 |
comprintf("%s",endstr); |
| 2749 |
finish_braces (); |
| 2750 |
sync_m68k_pc (); |
| 2751 |
if (global_mayfail) |
| 2752 |
comprintf("\tif (failure) m68k_pc_offset=m68k_pc_offset_thisinst;\n"); |
| 2753 |
return global_failure; |
| 2754 |
} |
| 2755 |
|
| 2756 |
static void |
| 2757 |
generate_includes (FILE * f) |
| 2758 |
{ |
| 2759 |
fprintf (f, "#include \"sysdeps.h\"\n"); |
| 2760 |
fprintf (f, "#include \"m68k.h\"\n"); |
| 2761 |
fprintf (f, "#include \"memory.h\"\n"); |
| 2762 |
fprintf (f, "#include \"readcpu.h\"\n"); |
| 2763 |
fprintf (f, "#include \"newcpu.h\"\n"); |
| 2764 |
fprintf (f, "#include \"comptbl.h\"\n"); |
| 2765 |
} |
| 2766 |
|
| 2767 |
static int postfix; |
| 2768 |
|
| 2769 |
static void |
| 2770 |
generate_one_opcode (int rp, int noflags) |
| 2771 |
{ |
| 2772 |
int i; |
| 2773 |
uae_u16 smsk, dmsk; |
| 2774 |
long int opcode = opcode_map[rp]; |
| 2775 |
int aborted=0; |
| 2776 |
int have_srcreg=0; |
| 2777 |
int have_dstreg=0; |
| 2778 |
|
| 2779 |
if (table68k[opcode].mnemo == i_ILLG |
| 2780 |
|| table68k[opcode].clev > cpu_level) |
| 2781 |
return; |
| 2782 |
|
| 2783 |
for (i = 0; lookuptab[i].name[0]; i++) |
| 2784 |
{ |
| 2785 |
if (table68k[opcode].mnemo == lookuptab[i].mnemo) |
| 2786 |
break; |
| 2787 |
} |
| 2788 |
|
| 2789 |
if (table68k[opcode].handler != -1) |
| 2790 |
return; |
| 2791 |
|
| 2792 |
switch (table68k[opcode].stype) |
| 2793 |
{ |
| 2794 |
case 0: |
| 2795 |
smsk = 7; |
| 2796 |
break; |
| 2797 |
case 1: |
| 2798 |
smsk = 255; |
| 2799 |
break; |
| 2800 |
case 2: |
| 2801 |
smsk = 15; |
| 2802 |
break; |
| 2803 |
case 3: |
| 2804 |
smsk = 7; |
| 2805 |
break; |
| 2806 |
case 4: |
| 2807 |
smsk = 7; |
| 2808 |
break; |
| 2809 |
case 5: |
| 2810 |
smsk = 63; |
| 2811 |
break; |
| 2812 |
case 6: |
| 2813 |
smsk = 255; |
| 2814 |
break; |
| 2815 |
case 7: |
| 2816 |
smsk = 3; |
| 2817 |
break; |
| 2818 |
default: |
| 2819 |
abort (); |
| 2820 |
} |
| 2821 |
dmsk = 7; |
| 2822 |
|
| 2823 |
next_cpu_level = -1; |
| 2824 |
if (table68k[opcode].suse |
| 2825 |
&& table68k[opcode].smode != imm && table68k[opcode].smode != imm0 |
| 2826 |
&& table68k[opcode].smode != imm1 && table68k[opcode].smode != imm2 |
| 2827 |
&& table68k[opcode].smode != absw && table68k[opcode].smode != absl |
| 2828 |
&& table68k[opcode].smode != PC8r && table68k[opcode].smode != PC16) |
| 2829 |
{ |
| 2830 |
have_srcreg=1; |
| 2831 |
if (table68k[opcode].spos == -1) |
| 2832 |
{ |
| 2833 |
if (((int) table68k[opcode].sreg) >= 128) |
| 2834 |
comprintf ("\tuae_s32 srcreg = (uae_s32)(uae_s8)%d;\n", (int) table68k[opcode].sreg); |
| 2835 |
else |
| 2836 |
comprintf ("\tuae_s32 srcreg = %d;\n", (int) table68k[opcode].sreg); |
| 2837 |
} |
| 2838 |
else |
| 2839 |
{ |
| 2840 |
char source[100]; |
| 2841 |
int pos = table68k[opcode].spos; |
| 2842 |
|
| 2843 |
comprintf ("#ifdef HAVE_GET_WORD_UNSWAPPED\n"); |
| 2844 |
|
| 2845 |
if (pos < 8 && (smsk >> (8 - pos)) != 0) |
| 2846 |
sprintf (source, "(((opcode >> %d) | (opcode << %d)) & %d)", |
| 2847 |
pos ^ 8, 8 - pos, dmsk); |
| 2848 |
else if (pos != 8) |
| 2849 |
sprintf (source, "((opcode >> %d) & %d)", pos ^ 8, smsk); |
| 2850 |
else |
| 2851 |
sprintf (source, "(opcode & %d)", smsk); |
| 2852 |
|
| 2853 |
if (table68k[opcode].stype == 3) |
| 2854 |
comprintf ("\tuae_u32 srcreg = imm8_table[%s];\n", source); |
| 2855 |
else if (table68k[opcode].stype == 1) |
| 2856 |
comprintf ("\tuae_u32 srcreg = (uae_s32)(uae_s8)%s;\n", source); |
| 2857 |
else |
| 2858 |
comprintf ("\tuae_u32 srcreg = %s;\n", source); |
| 2859 |
|
| 2860 |
comprintf ("#else\n"); |
| 2861 |
|
| 2862 |
if (pos) |
| 2863 |
sprintf (source, "((opcode >> %d) & %d)", pos, smsk); |
| 2864 |
else |
| 2865 |
sprintf (source, "(opcode & %d)", smsk); |
| 2866 |
|
| 2867 |
if (table68k[opcode].stype == 3) |
| 2868 |
comprintf ("\tuae_s32 srcreg = imm8_table[%s];\n", source); |
| 2869 |
else if (table68k[opcode].stype == 1) |
| 2870 |
comprintf ("\tuae_s32 srcreg = (uae_s32)(uae_s8)%s;\n", source); |
| 2871 |
else |
| 2872 |
comprintf ("\tuae_s32 srcreg = %s;\n", source); |
| 2873 |
|
| 2874 |
comprintf ("#endif\n"); |
| 2875 |
} |
| 2876 |
} |
| 2877 |
if (table68k[opcode].duse |
| 2878 |
/* Yes, the dmode can be imm, in case of LINK or DBcc */ |
| 2879 |
&& table68k[opcode].dmode != imm && table68k[opcode].dmode != imm0 |
| 2880 |
&& table68k[opcode].dmode != imm1 && table68k[opcode].dmode != imm2 |
| 2881 |
&& table68k[opcode].dmode != absw && table68k[opcode].dmode != absl) |
| 2882 |
{ |
| 2883 |
have_dstreg=1; |
| 2884 |
if (table68k[opcode].dpos == -1) |
| 2885 |
{ |
| 2886 |
if (((int) table68k[opcode].dreg) >= 128) |
| 2887 |
comprintf ("\tuae_s32 dstreg = (uae_s32)(uae_s8)%d;\n", (int) table68k[opcode].dreg); |
| 2888 |
else |
| 2889 |
comprintf ("\tuae_s32 dstreg = %d;\n", (int) table68k[opcode].dreg); |
| 2890 |
} |
| 2891 |
else |
| 2892 |
{ |
| 2893 |
int pos = table68k[opcode].dpos; |
| 2894 |
|
| 2895 |
comprintf ("#ifdef HAVE_GET_WORD_UNSWAPPED\n"); |
| 2896 |
|
| 2897 |
if (pos < 8 && (dmsk >> (8 - pos)) != 0) |
| 2898 |
comprintf ("\tuae_u32 dstreg = ((opcode >> %d) | (opcode << %d)) & %d;\n", |
| 2899 |
pos ^ 8, 8 - pos, dmsk); |
| 2900 |
else if (pos != 8) |
| 2901 |
comprintf ("\tuae_u32 dstreg = (opcode >> %d) & %d;\n", |
| 2902 |
pos ^ 8, dmsk); |
| 2903 |
else |
| 2904 |
comprintf ("\tuae_u32 dstreg = opcode & %d;\n", dmsk); |
| 2905 |
|
| 2906 |
comprintf ("#else\n"); |
| 2907 |
|
| 2908 |
if (pos) |
| 2909 |
comprintf ("\tuae_u32 dstreg = (opcode >> %d) & %d;\n", |
| 2910 |
pos, dmsk); |
| 2911 |
else |
| 2912 |
comprintf ("\tuae_u32 dstreg = opcode & %d;\n", dmsk); |
| 2913 |
|
| 2914 |
comprintf ("#endif\n"); |
| 2915 |
} |
| 2916 |
} |
| 2917 |
|
| 2918 |
if (have_srcreg && have_dstreg && |
| 2919 |
(table68k[opcode].dmode==Areg || |
| 2920 |
table68k[opcode].dmode==Aind || |
| 2921 |
table68k[opcode].dmode==Aipi || |
| 2922 |
table68k[opcode].dmode==Apdi || |
| 2923 |
table68k[opcode].dmode==Ad16 || |
| 2924 |
table68k[opcode].dmode==Ad8r) && |
| 2925 |
(table68k[opcode].smode==Areg || |
| 2926 |
table68k[opcode].smode==Aind || |
| 2927 |
table68k[opcode].smode==Aipi || |
| 2928 |
table68k[opcode].smode==Apdi || |
| 2929 |
table68k[opcode].smode==Ad16 || |
| 2930 |
table68k[opcode].smode==Ad8r) |
| 2931 |
) { |
| 2932 |
comprintf("\tuae_u32 dodgy=(srcreg==(uae_s32)dstreg);\n"); |
| 2933 |
} |
| 2934 |
else { |
| 2935 |
comprintf("\tuae_u32 dodgy=0;\n"); |
| 2936 |
} |
| 2937 |
comprintf("\tuae_u32 m68k_pc_offset_thisinst=m68k_pc_offset;\n"); |
| 2938 |
comprintf("\tm68k_pc_offset+=2;\n"); |
| 2939 |
|
| 2940 |
aborted=gen_opcode (opcode); |
| 2941 |
{ |
| 2942 |
int flags=0; |
| 2943 |
if (global_isjump) flags|=1; |
| 2944 |
if (long_opcode) flags|=2; |
| 2945 |
if (global_cmov) flags|=4; |
| 2946 |
if (global_isaddx) flags|=8; |
| 2947 |
if (global_iscjump) flags|=16; |
| 2948 |
if (global_fpu) flags|=32; |
| 2949 |
if (global_setzflg) flags|=64; |
| 2950 |
|
| 2951 |
comprintf ("}\n"); |
| 2952 |
|
| 2953 |
if (aborted) { |
| 2954 |
fprintf (stblfile, "{ NULL, 0x%08x, %ld }, /* %s */\n", flags, opcode, lookuptab[i].name); |
| 2955 |
com_discard(); |
| 2956 |
} |
| 2957 |
else { |
| 2958 |
if (noflags) { |
| 2959 |
fprintf (stblfile, "{ op_%lx_%d_comp_nf, 0x%08x, %ld }, /* %s */\n", opcode, postfix, flags, opcode, lookuptab[i].name); |
| 2960 |
fprintf (headerfile, "extern compop_func op_%lx_%d_comp_nf;\n", opcode, postfix); |
| 2961 |
printf ("void REGPARAM2 op_%lx_%d_comp_nf(uae_u32 opcode) /* %s */\n{\n", opcode, postfix, lookuptab[i].name); |
| 2962 |
} |
| 2963 |
else { |
| 2964 |
fprintf (stblfile, "{ op_%lx_%d_comp_ff, 0x%08x, %ld }, /* %s */\n", opcode, postfix, flags, opcode, lookuptab[i].name); |
| 2965 |
fprintf (headerfile, "extern compop_func op_%lx_%d_comp_ff;\n", opcode, postfix); |
| 2966 |
printf ("void REGPARAM2 op_%lx_%d_comp_ff(uae_u32 opcode) /* %s */\n{\n", opcode, postfix, lookuptab[i].name); |
| 2967 |
} |
| 2968 |
com_flush(); |
| 2969 |
} |
| 2970 |
} |
| 2971 |
opcode_next_clev[rp] = next_cpu_level; |
| 2972 |
opcode_last_postfix[rp] = postfix; |
| 2973 |
} |
| 2974 |
|
| 2975 |
static void |
| 2976 |
generate_func (int noflags) |
| 2977 |
{ |
| 2978 |
int i, j, rp; |
| 2979 |
|
| 2980 |
using_prefetch = 0; |
| 2981 |
using_exception_3 = 0; |
| 2982 |
for (i = 0; i < 1; i++) /* We only do one level! */ |
| 2983 |
{ |
| 2984 |
cpu_level = 4 - i; |
| 2985 |
postfix = i; |
| 2986 |
|
| 2987 |
if (noflags) |
| 2988 |
fprintf (stblfile, "struct comptbl op_smalltbl_%d_comp_nf[] = {\n", postfix); |
| 2989 |
else |
| 2990 |
fprintf (stblfile, "struct comptbl op_smalltbl_%d_comp_ff[] = {\n", postfix); |
| 2991 |
|
| 2992 |
|
| 2993 |
/* sam: this is for people with low memory (eg. me :)) */ |
| 2994 |
!printf ("\n" |
| 2995 |
"#if !defined(PART_1) && !defined(PART_2) && " |
| 2996 |
"!defined(PART_3) && !defined(PART_4) && " |
| 2997 |
"!defined(PART_5) && !defined(PART_6) && " |
| 2998 |
"!defined(PART_7) && !defined(PART_8)" |
| 2999 |
"\n" |
| 3000 |
"#define PART_1 1\n" |
| 3001 |
"#define PART_2 1\n" |
| 3002 |
"#define PART_3 1\n" |
| 3003 |
"#define PART_4 1\n" |
| 3004 |
"#define PART_5 1\n" |
| 3005 |
"#define PART_6 1\n" |
| 3006 |
"#define PART_7 1\n" |
| 3007 |
"#define PART_8 1\n" |
| 3008 |
"#endif\n\n"); |
| 3009 |
|
| 3010 |
rp = 0; |
| 3011 |
for (j = 1; j <= 8; ++j) |
| 3012 |
{ |
| 3013 |
int k = (j * nr_cpuop_funcs) / 8; |
| 3014 |
printf ("#ifdef PART_%d\n", j); |
| 3015 |
for (; rp < k; rp++) |
| 3016 |
generate_one_opcode (rp,noflags); |
| 3017 |
printf ("#endif\n\n"); |
| 3018 |
} |
| 3019 |
|
| 3020 |
fprintf (stblfile, "{ 0, 0,65536 }};\n"); |
| 3021 |
} |
| 3022 |
|
| 3023 |
} |
| 3024 |
|
| 3025 |
int |
| 3026 |
main (int argc, char **argv) |
| 3027 |
{ |
| 3028 |
read_table68k (); |
| 3029 |
do_merges (); |
| 3030 |
|
| 3031 |
opcode_map = (int *) malloc (sizeof (int) * nr_cpuop_funcs); |
| 3032 |
opcode_last_postfix = (int *) malloc (sizeof (int) * nr_cpuop_funcs); |
| 3033 |
opcode_next_clev = (int *) malloc (sizeof (int) * nr_cpuop_funcs); |
| 3034 |
counts = (unsigned long *) malloc (65536 * sizeof (unsigned long)); |
| 3035 |
read_counts (); |
| 3036 |
|
| 3037 |
/* It would be a lot nicer to put all in one file (we'd also get rid of |
| 3038 |
* cputbl.h that way), but cpuopti can't cope. That could be fixed, but |
| 3039 |
* I don't dare to touch the 68k version. */ |
| 3040 |
|
| 3041 |
headerfile = fopen ("comptbl.h", "wb"); |
| 3042 |
stblfile = fopen ("compstbl.cpp", "wb"); |
| 3043 |
freopen ("compemu.cpp", "wb", stdout); |
| 3044 |
|
| 3045 |
generate_includes (stdout); |
| 3046 |
generate_includes (stblfile); |
| 3047 |
|
| 3048 |
printf("#include \"compiler/compemu.h\"\n"); |
| 3049 |
|
| 3050 |
noflags=0; |
| 3051 |
generate_func (noflags); |
| 3052 |
|
| 3053 |
free(opcode_map); |
| 3054 |
free(opcode_last_postfix); |
| 3055 |
free(opcode_next_clev); |
| 3056 |
free(counts); |
| 3057 |
|
| 3058 |
opcode_map = (int *) malloc (sizeof (int) * nr_cpuop_funcs); |
| 3059 |
opcode_last_postfix = (int *) malloc (sizeof (int) * nr_cpuop_funcs); |
| 3060 |
opcode_next_clev = (int *) malloc (sizeof (int) * nr_cpuop_funcs); |
| 3061 |
counts = (unsigned long *) malloc (65536 * sizeof (unsigned long)); |
| 3062 |
read_counts (); |
| 3063 |
noflags=1; |
| 3064 |
generate_func (noflags); |
| 3065 |
|
| 3066 |
free(opcode_map); |
| 3067 |
free(opcode_last_postfix); |
| 3068 |
free(opcode_next_clev); |
| 3069 |
free(counts); |
| 3070 |
|
| 3071 |
free (table68k); |
| 3072 |
fclose (stblfile); |
| 3073 |
fclose (headerfile); |
| 3074 |
return 0; |
| 3075 |
} |
