root / target-m68k / translate.c @ ab1103de
History | View | Annotate | Download (81 kB)
| 1 |
/*
|
|---|---|
| 2 |
* m68k translation
|
| 3 |
*
|
| 4 |
* Copyright (c) 2005-2007 CodeSourcery
|
| 5 |
* Written by Paul Brook
|
| 6 |
*
|
| 7 |
* This library is free software; you can redistribute it and/or
|
| 8 |
* modify it under the terms of the GNU Lesser General Public
|
| 9 |
* License as published by the Free Software Foundation; either
|
| 10 |
* version 2 of the License, or (at your option) any later version.
|
| 11 |
*
|
| 12 |
* This library is distributed in the hope that it will be useful,
|
| 13 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 14 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
| 15 |
* General Public License for more details.
|
| 16 |
*
|
| 17 |
* You should have received a copy of the GNU Lesser General Public
|
| 18 |
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
| 19 |
*/
|
| 20 |
|
| 21 |
#include "cpu.h" |
| 22 |
#include "disas.h" |
| 23 |
#include "tcg-op.h" |
| 24 |
#include "qemu-log.h" |
| 25 |
|
| 26 |
#include "helpers.h" |
| 27 |
#define GEN_HELPER 1 |
| 28 |
#include "helpers.h" |
| 29 |
|
| 30 |
//#define DEBUG_DISPATCH 1
|
| 31 |
|
| 32 |
/* Fake floating point. */
|
| 33 |
#define tcg_gen_mov_f64 tcg_gen_mov_i64
|
| 34 |
#define tcg_gen_qemu_ldf64 tcg_gen_qemu_ld64
|
| 35 |
#define tcg_gen_qemu_stf64 tcg_gen_qemu_st64
|
| 36 |
|
| 37 |
#define DEFO32(name, offset) static TCGv QREG_##name; |
| 38 |
#define DEFO64(name, offset) static TCGv_i64 QREG_##name; |
| 39 |
#define DEFF64(name, offset) static TCGv_i64 QREG_##name; |
| 40 |
#include "qregs.def" |
| 41 |
#undef DEFO32
|
| 42 |
#undef DEFO64
|
| 43 |
#undef DEFF64
|
| 44 |
|
| 45 |
static TCGv_ptr cpu_env;
|
| 46 |
|
| 47 |
static char cpu_reg_names[3*8*3 + 5*4]; |
| 48 |
static TCGv cpu_dregs[8]; |
| 49 |
static TCGv cpu_aregs[8]; |
| 50 |
static TCGv_i64 cpu_fregs[8]; |
| 51 |
static TCGv_i64 cpu_macc[4]; |
| 52 |
|
| 53 |
#define DREG(insn, pos) cpu_dregs[((insn) >> (pos)) & 7] |
| 54 |
#define AREG(insn, pos) cpu_aregs[((insn) >> (pos)) & 7] |
| 55 |
#define FREG(insn, pos) cpu_fregs[((insn) >> (pos)) & 7] |
| 56 |
#define MACREG(acc) cpu_macc[acc]
|
| 57 |
#define QREG_SP cpu_aregs[7] |
| 58 |
|
| 59 |
static TCGv NULL_QREG;
|
| 60 |
#define IS_NULL_QREG(t) (TCGV_EQUAL(t, NULL_QREG))
|
| 61 |
/* Used to distinguish stores from bad addressing modes. */
|
| 62 |
static TCGv store_dummy;
|
| 63 |
|
| 64 |
#include "gen-icount.h" |
| 65 |
|
| 66 |
void m68k_tcg_init(void) |
| 67 |
{
|
| 68 |
char *p;
|
| 69 |
int i;
|
| 70 |
|
| 71 |
#define DEFO32(name, offset) QREG_##name = tcg_global_mem_new_i32(TCG_AREG0, offsetof(CPUM68KState, offset), #name); |
| 72 |
#define DEFO64(name, offset) QREG_##name = tcg_global_mem_new_i64(TCG_AREG0, offsetof(CPUM68KState, offset), #name); |
| 73 |
#define DEFF64(name, offset) DEFO64(name, offset)
|
| 74 |
#include "qregs.def" |
| 75 |
#undef DEFO32
|
| 76 |
#undef DEFO64
|
| 77 |
#undef DEFF64
|
| 78 |
|
| 79 |
cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
|
| 80 |
|
| 81 |
p = cpu_reg_names; |
| 82 |
for (i = 0; i < 8; i++) { |
| 83 |
sprintf(p, "D%d", i);
|
| 84 |
cpu_dregs[i] = tcg_global_mem_new(TCG_AREG0, |
| 85 |
offsetof(CPUM68KState, dregs[i]), p); |
| 86 |
p += 3;
|
| 87 |
sprintf(p, "A%d", i);
|
| 88 |
cpu_aregs[i] = tcg_global_mem_new(TCG_AREG0, |
| 89 |
offsetof(CPUM68KState, aregs[i]), p); |
| 90 |
p += 3;
|
| 91 |
sprintf(p, "F%d", i);
|
| 92 |
cpu_fregs[i] = tcg_global_mem_new_i64(TCG_AREG0, |
| 93 |
offsetof(CPUM68KState, fregs[i]), p); |
| 94 |
p += 3;
|
| 95 |
} |
| 96 |
for (i = 0; i < 4; i++) { |
| 97 |
sprintf(p, "ACC%d", i);
|
| 98 |
cpu_macc[i] = tcg_global_mem_new_i64(TCG_AREG0, |
| 99 |
offsetof(CPUM68KState, macc[i]), p); |
| 100 |
p += 5;
|
| 101 |
} |
| 102 |
|
| 103 |
NULL_QREG = tcg_global_mem_new(TCG_AREG0, -4, "NULL"); |
| 104 |
store_dummy = tcg_global_mem_new(TCG_AREG0, -8, "NULL"); |
| 105 |
|
| 106 |
#define GEN_HELPER 2 |
| 107 |
#include "helpers.h" |
| 108 |
} |
| 109 |
|
| 110 |
static inline void qemu_assert(int cond, const char *msg) |
| 111 |
{
|
| 112 |
if (!cond) {
|
| 113 |
fprintf (stderr, "badness: %s\n", msg);
|
| 114 |
abort(); |
| 115 |
} |
| 116 |
} |
| 117 |
|
| 118 |
/* internal defines */
|
| 119 |
typedef struct DisasContext { |
| 120 |
CPUM68KState *env; |
| 121 |
target_ulong insn_pc; /* Start of the current instruction. */
|
| 122 |
target_ulong pc; |
| 123 |
int is_jmp;
|
| 124 |
int cc_op;
|
| 125 |
int user;
|
| 126 |
uint32_t fpcr; |
| 127 |
struct TranslationBlock *tb;
|
| 128 |
int singlestep_enabled;
|
| 129 |
int is_mem;
|
| 130 |
TCGv_i64 mactmp; |
| 131 |
int done_mac;
|
| 132 |
} DisasContext; |
| 133 |
|
| 134 |
#define DISAS_JUMP_NEXT 4 |
| 135 |
|
| 136 |
#if defined(CONFIG_USER_ONLY)
|
| 137 |
#define IS_USER(s) 1 |
| 138 |
#else
|
| 139 |
#define IS_USER(s) s->user
|
| 140 |
#endif
|
| 141 |
|
| 142 |
/* XXX: move that elsewhere */
|
| 143 |
/* ??? Fix exceptions. */
|
| 144 |
static void *gen_throws_exception; |
| 145 |
#define gen_last_qop NULL |
| 146 |
|
| 147 |
#define OS_BYTE 0 |
| 148 |
#define OS_WORD 1 |
| 149 |
#define OS_LONG 2 |
| 150 |
#define OS_SINGLE 4 |
| 151 |
#define OS_DOUBLE 5 |
| 152 |
|
| 153 |
typedef void (*disas_proc)(CPUM68KState *env, DisasContext *s, uint16_t insn); |
| 154 |
|
| 155 |
#ifdef DEBUG_DISPATCH
|
| 156 |
#define DISAS_INSN(name) \
|
| 157 |
static void real_disas_##name(CPUM68KState *env, DisasContext *s, \ |
| 158 |
uint16_t insn); \ |
| 159 |
static void disas_##name(CPUM68KState *env, DisasContext *s, \ |
| 160 |
uint16_t insn) \ |
| 161 |
{ \
|
| 162 |
qemu_log("Dispatch " #name "\n"); \ |
| 163 |
real_disas_##name(s, env, insn); \ |
| 164 |
} \ |
| 165 |
static void real_disas_##name(CPUM68KState *env, DisasContext *s, \ |
| 166 |
uint16_t insn) |
| 167 |
#else
|
| 168 |
#define DISAS_INSN(name) \
|
| 169 |
static void disas_##name(CPUM68KState *env, DisasContext *s, \ |
| 170 |
uint16_t insn) |
| 171 |
#endif
|
| 172 |
|
| 173 |
/* Generate a load from the specified address. Narrow values are
|
| 174 |
sign extended to full register width. */
|
| 175 |
static inline TCGv gen_load(DisasContext * s, int opsize, TCGv addr, int sign) |
| 176 |
{
|
| 177 |
TCGv tmp; |
| 178 |
int index = IS_USER(s);
|
| 179 |
s->is_mem = 1;
|
| 180 |
tmp = tcg_temp_new_i32(); |
| 181 |
switch(opsize) {
|
| 182 |
case OS_BYTE:
|
| 183 |
if (sign)
|
| 184 |
tcg_gen_qemu_ld8s(tmp, addr, index); |
| 185 |
else
|
| 186 |
tcg_gen_qemu_ld8u(tmp, addr, index); |
| 187 |
break;
|
| 188 |
case OS_WORD:
|
| 189 |
if (sign)
|
| 190 |
tcg_gen_qemu_ld16s(tmp, addr, index); |
| 191 |
else
|
| 192 |
tcg_gen_qemu_ld16u(tmp, addr, index); |
| 193 |
break;
|
| 194 |
case OS_LONG:
|
| 195 |
case OS_SINGLE:
|
| 196 |
tcg_gen_qemu_ld32u(tmp, addr, index); |
| 197 |
break;
|
| 198 |
default:
|
| 199 |
qemu_assert(0, "bad load size"); |
| 200 |
} |
| 201 |
gen_throws_exception = gen_last_qop; |
| 202 |
return tmp;
|
| 203 |
} |
| 204 |
|
| 205 |
static inline TCGv_i64 gen_load64(DisasContext * s, TCGv addr) |
| 206 |
{
|
| 207 |
TCGv_i64 tmp; |
| 208 |
int index = IS_USER(s);
|
| 209 |
s->is_mem = 1;
|
| 210 |
tmp = tcg_temp_new_i64(); |
| 211 |
tcg_gen_qemu_ldf64(tmp, addr, index); |
| 212 |
gen_throws_exception = gen_last_qop; |
| 213 |
return tmp;
|
| 214 |
} |
| 215 |
|
| 216 |
/* Generate a store. */
|
| 217 |
static inline void gen_store(DisasContext *s, int opsize, TCGv addr, TCGv val) |
| 218 |
{
|
| 219 |
int index = IS_USER(s);
|
| 220 |
s->is_mem = 1;
|
| 221 |
switch(opsize) {
|
| 222 |
case OS_BYTE:
|
| 223 |
tcg_gen_qemu_st8(val, addr, index); |
| 224 |
break;
|
| 225 |
case OS_WORD:
|
| 226 |
tcg_gen_qemu_st16(val, addr, index); |
| 227 |
break;
|
| 228 |
case OS_LONG:
|
| 229 |
case OS_SINGLE:
|
| 230 |
tcg_gen_qemu_st32(val, addr, index); |
| 231 |
break;
|
| 232 |
default:
|
| 233 |
qemu_assert(0, "bad store size"); |
| 234 |
} |
| 235 |
gen_throws_exception = gen_last_qop; |
| 236 |
} |
| 237 |
|
| 238 |
static inline void gen_store64(DisasContext *s, TCGv addr, TCGv_i64 val) |
| 239 |
{
|
| 240 |
int index = IS_USER(s);
|
| 241 |
s->is_mem = 1;
|
| 242 |
tcg_gen_qemu_stf64(val, addr, index); |
| 243 |
gen_throws_exception = gen_last_qop; |
| 244 |
} |
| 245 |
|
| 246 |
typedef enum { |
| 247 |
EA_STORE, |
| 248 |
EA_LOADU, |
| 249 |
EA_LOADS |
| 250 |
} ea_what; |
| 251 |
|
| 252 |
/* Generate an unsigned load if VAL is 0 a signed load if val is -1,
|
| 253 |
otherwise generate a store. */
|
| 254 |
static TCGv gen_ldst(DisasContext *s, int opsize, TCGv addr, TCGv val, |
| 255 |
ea_what what) |
| 256 |
{
|
| 257 |
if (what == EA_STORE) {
|
| 258 |
gen_store(s, opsize, addr, val); |
| 259 |
return store_dummy;
|
| 260 |
} else {
|
| 261 |
return gen_load(s, opsize, addr, what == EA_LOADS);
|
| 262 |
} |
| 263 |
} |
| 264 |
|
| 265 |
/* Read a 32-bit immediate constant. */
|
| 266 |
static inline uint32_t read_im32(CPUM68KState *env, DisasContext *s) |
| 267 |
{
|
| 268 |
uint32_t im; |
| 269 |
im = ((uint32_t)cpu_lduw_code(env, s->pc)) << 16;
|
| 270 |
s->pc += 2;
|
| 271 |
im |= cpu_lduw_code(env, s->pc); |
| 272 |
s->pc += 2;
|
| 273 |
return im;
|
| 274 |
} |
| 275 |
|
| 276 |
/* Calculate and address index. */
|
| 277 |
static TCGv gen_addr_index(uint16_t ext, TCGv tmp)
|
| 278 |
{
|
| 279 |
TCGv add; |
| 280 |
int scale;
|
| 281 |
|
| 282 |
add = (ext & 0x8000) ? AREG(ext, 12) : DREG(ext, 12); |
| 283 |
if ((ext & 0x800) == 0) { |
| 284 |
tcg_gen_ext16s_i32(tmp, add); |
| 285 |
add = tmp; |
| 286 |
} |
| 287 |
scale = (ext >> 9) & 3; |
| 288 |
if (scale != 0) { |
| 289 |
tcg_gen_shli_i32(tmp, add, scale); |
| 290 |
add = tmp; |
| 291 |
} |
| 292 |
return add;
|
| 293 |
} |
| 294 |
|
| 295 |
/* Handle a base + index + displacement effective addresss.
|
| 296 |
A NULL_QREG base means pc-relative. */
|
| 297 |
static TCGv gen_lea_indexed(CPUM68KState *env, DisasContext *s, int opsize, |
| 298 |
TCGv base) |
| 299 |
{
|
| 300 |
uint32_t offset; |
| 301 |
uint16_t ext; |
| 302 |
TCGv add; |
| 303 |
TCGv tmp; |
| 304 |
uint32_t bd, od; |
| 305 |
|
| 306 |
offset = s->pc; |
| 307 |
ext = cpu_lduw_code(env, s->pc); |
| 308 |
s->pc += 2;
|
| 309 |
|
| 310 |
if ((ext & 0x800) == 0 && !m68k_feature(s->env, M68K_FEATURE_WORD_INDEX)) |
| 311 |
return NULL_QREG;
|
| 312 |
|
| 313 |
if (ext & 0x100) { |
| 314 |
/* full extension word format */
|
| 315 |
if (!m68k_feature(s->env, M68K_FEATURE_EXT_FULL))
|
| 316 |
return NULL_QREG;
|
| 317 |
|
| 318 |
if ((ext & 0x30) > 0x10) { |
| 319 |
/* base displacement */
|
| 320 |
if ((ext & 0x30) == 0x20) { |
| 321 |
bd = (int16_t)cpu_lduw_code(env, s->pc); |
| 322 |
s->pc += 2;
|
| 323 |
} else {
|
| 324 |
bd = read_im32(env, s); |
| 325 |
} |
| 326 |
} else {
|
| 327 |
bd = 0;
|
| 328 |
} |
| 329 |
tmp = tcg_temp_new(); |
| 330 |
if ((ext & 0x44) == 0) { |
| 331 |
/* pre-index */
|
| 332 |
add = gen_addr_index(ext, tmp); |
| 333 |
} else {
|
| 334 |
add = NULL_QREG; |
| 335 |
} |
| 336 |
if ((ext & 0x80) == 0) { |
| 337 |
/* base not suppressed */
|
| 338 |
if (IS_NULL_QREG(base)) {
|
| 339 |
base = tcg_const_i32(offset + bd); |
| 340 |
bd = 0;
|
| 341 |
} |
| 342 |
if (!IS_NULL_QREG(add)) {
|
| 343 |
tcg_gen_add_i32(tmp, add, base); |
| 344 |
add = tmp; |
| 345 |
} else {
|
| 346 |
add = base; |
| 347 |
} |
| 348 |
} |
| 349 |
if (!IS_NULL_QREG(add)) {
|
| 350 |
if (bd != 0) { |
| 351 |
tcg_gen_addi_i32(tmp, add, bd); |
| 352 |
add = tmp; |
| 353 |
} |
| 354 |
} else {
|
| 355 |
add = tcg_const_i32(bd); |
| 356 |
} |
| 357 |
if ((ext & 3) != 0) { |
| 358 |
/* memory indirect */
|
| 359 |
base = gen_load(s, OS_LONG, add, 0);
|
| 360 |
if ((ext & 0x44) == 4) { |
| 361 |
add = gen_addr_index(ext, tmp); |
| 362 |
tcg_gen_add_i32(tmp, add, base); |
| 363 |
add = tmp; |
| 364 |
} else {
|
| 365 |
add = base; |
| 366 |
} |
| 367 |
if ((ext & 3) > 1) { |
| 368 |
/* outer displacement */
|
| 369 |
if ((ext & 3) == 2) { |
| 370 |
od = (int16_t)cpu_lduw_code(env, s->pc); |
| 371 |
s->pc += 2;
|
| 372 |
} else {
|
| 373 |
od = read_im32(env, s); |
| 374 |
} |
| 375 |
} else {
|
| 376 |
od = 0;
|
| 377 |
} |
| 378 |
if (od != 0) { |
| 379 |
tcg_gen_addi_i32(tmp, add, od); |
| 380 |
add = tmp; |
| 381 |
} |
| 382 |
} |
| 383 |
} else {
|
| 384 |
/* brief extension word format */
|
| 385 |
tmp = tcg_temp_new(); |
| 386 |
add = gen_addr_index(ext, tmp); |
| 387 |
if (!IS_NULL_QREG(base)) {
|
| 388 |
tcg_gen_add_i32(tmp, add, base); |
| 389 |
if ((int8_t)ext)
|
| 390 |
tcg_gen_addi_i32(tmp, tmp, (int8_t)ext); |
| 391 |
} else {
|
| 392 |
tcg_gen_addi_i32(tmp, add, offset + (int8_t)ext); |
| 393 |
} |
| 394 |
add = tmp; |
| 395 |
} |
| 396 |
return add;
|
| 397 |
} |
| 398 |
|
| 399 |
/* Update the CPU env CC_OP state. */
|
| 400 |
static inline void gen_flush_cc_op(DisasContext *s) |
| 401 |
{
|
| 402 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 403 |
tcg_gen_movi_i32(QREG_CC_OP, s->cc_op); |
| 404 |
} |
| 405 |
|
| 406 |
/* Evaluate all the CC flags. */
|
| 407 |
static inline void gen_flush_flags(DisasContext *s) |
| 408 |
{
|
| 409 |
if (s->cc_op == CC_OP_FLAGS)
|
| 410 |
return;
|
| 411 |
gen_flush_cc_op(s); |
| 412 |
gen_helper_flush_flags(cpu_env, QREG_CC_OP); |
| 413 |
s->cc_op = CC_OP_FLAGS; |
| 414 |
} |
| 415 |
|
| 416 |
static void gen_logic_cc(DisasContext *s, TCGv val) |
| 417 |
{
|
| 418 |
tcg_gen_mov_i32(QREG_CC_DEST, val); |
| 419 |
s->cc_op = CC_OP_LOGIC; |
| 420 |
} |
| 421 |
|
| 422 |
static void gen_update_cc_add(TCGv dest, TCGv src) |
| 423 |
{
|
| 424 |
tcg_gen_mov_i32(QREG_CC_DEST, dest); |
| 425 |
tcg_gen_mov_i32(QREG_CC_SRC, src); |
| 426 |
} |
| 427 |
|
| 428 |
static inline int opsize_bytes(int opsize) |
| 429 |
{
|
| 430 |
switch (opsize) {
|
| 431 |
case OS_BYTE: return 1; |
| 432 |
case OS_WORD: return 2; |
| 433 |
case OS_LONG: return 4; |
| 434 |
case OS_SINGLE: return 4; |
| 435 |
case OS_DOUBLE: return 8; |
| 436 |
default:
|
| 437 |
qemu_assert(0, "bad operand size"); |
| 438 |
return 0; |
| 439 |
} |
| 440 |
} |
| 441 |
|
| 442 |
/* Assign value to a register. If the width is less than the register width
|
| 443 |
only the low part of the register is set. */
|
| 444 |
static void gen_partset_reg(int opsize, TCGv reg, TCGv val) |
| 445 |
{
|
| 446 |
TCGv tmp; |
| 447 |
switch (opsize) {
|
| 448 |
case OS_BYTE:
|
| 449 |
tcg_gen_andi_i32(reg, reg, 0xffffff00);
|
| 450 |
tmp = tcg_temp_new(); |
| 451 |
tcg_gen_ext8u_i32(tmp, val); |
| 452 |
tcg_gen_or_i32(reg, reg, tmp); |
| 453 |
break;
|
| 454 |
case OS_WORD:
|
| 455 |
tcg_gen_andi_i32(reg, reg, 0xffff0000);
|
| 456 |
tmp = tcg_temp_new(); |
| 457 |
tcg_gen_ext16u_i32(tmp, val); |
| 458 |
tcg_gen_or_i32(reg, reg, tmp); |
| 459 |
break;
|
| 460 |
case OS_LONG:
|
| 461 |
case OS_SINGLE:
|
| 462 |
tcg_gen_mov_i32(reg, val); |
| 463 |
break;
|
| 464 |
default:
|
| 465 |
qemu_assert(0, "Bad operand size"); |
| 466 |
break;
|
| 467 |
} |
| 468 |
} |
| 469 |
|
| 470 |
/* Sign or zero extend a value. */
|
| 471 |
static inline TCGv gen_extend(TCGv val, int opsize, int sign) |
| 472 |
{
|
| 473 |
TCGv tmp; |
| 474 |
|
| 475 |
switch (opsize) {
|
| 476 |
case OS_BYTE:
|
| 477 |
tmp = tcg_temp_new(); |
| 478 |
if (sign)
|
| 479 |
tcg_gen_ext8s_i32(tmp, val); |
| 480 |
else
|
| 481 |
tcg_gen_ext8u_i32(tmp, val); |
| 482 |
break;
|
| 483 |
case OS_WORD:
|
| 484 |
tmp = tcg_temp_new(); |
| 485 |
if (sign)
|
| 486 |
tcg_gen_ext16s_i32(tmp, val); |
| 487 |
else
|
| 488 |
tcg_gen_ext16u_i32(tmp, val); |
| 489 |
break;
|
| 490 |
case OS_LONG:
|
| 491 |
case OS_SINGLE:
|
| 492 |
tmp = val; |
| 493 |
break;
|
| 494 |
default:
|
| 495 |
qemu_assert(0, "Bad operand size"); |
| 496 |
} |
| 497 |
return tmp;
|
| 498 |
} |
| 499 |
|
| 500 |
/* Generate code for an "effective address". Does not adjust the base
|
| 501 |
register for autoincrement addressing modes. */
|
| 502 |
static TCGv gen_lea(CPUM68KState *env, DisasContext *s, uint16_t insn,
|
| 503 |
int opsize)
|
| 504 |
{
|
| 505 |
TCGv reg; |
| 506 |
TCGv tmp; |
| 507 |
uint16_t ext; |
| 508 |
uint32_t offset; |
| 509 |
|
| 510 |
switch ((insn >> 3) & 7) { |
| 511 |
case 0: /* Data register direct. */ |
| 512 |
case 1: /* Address register direct. */ |
| 513 |
return NULL_QREG;
|
| 514 |
case 2: /* Indirect register */ |
| 515 |
case 3: /* Indirect postincrement. */ |
| 516 |
return AREG(insn, 0); |
| 517 |
case 4: /* Indirect predecrememnt. */ |
| 518 |
reg = AREG(insn, 0);
|
| 519 |
tmp = tcg_temp_new(); |
| 520 |
tcg_gen_subi_i32(tmp, reg, opsize_bytes(opsize)); |
| 521 |
return tmp;
|
| 522 |
case 5: /* Indirect displacement. */ |
| 523 |
reg = AREG(insn, 0);
|
| 524 |
tmp = tcg_temp_new(); |
| 525 |
ext = cpu_lduw_code(env, s->pc); |
| 526 |
s->pc += 2;
|
| 527 |
tcg_gen_addi_i32(tmp, reg, (int16_t)ext); |
| 528 |
return tmp;
|
| 529 |
case 6: /* Indirect index + displacement. */ |
| 530 |
reg = AREG(insn, 0);
|
| 531 |
return gen_lea_indexed(env, s, opsize, reg);
|
| 532 |
case 7: /* Other */ |
| 533 |
switch (insn & 7) { |
| 534 |
case 0: /* Absolute short. */ |
| 535 |
offset = cpu_ldsw_code(env, s->pc); |
| 536 |
s->pc += 2;
|
| 537 |
return tcg_const_i32(offset);
|
| 538 |
case 1: /* Absolute long. */ |
| 539 |
offset = read_im32(env, s); |
| 540 |
return tcg_const_i32(offset);
|
| 541 |
case 2: /* pc displacement */ |
| 542 |
offset = s->pc; |
| 543 |
offset += cpu_ldsw_code(env, s->pc); |
| 544 |
s->pc += 2;
|
| 545 |
return tcg_const_i32(offset);
|
| 546 |
case 3: /* pc index+displacement. */ |
| 547 |
return gen_lea_indexed(env, s, opsize, NULL_QREG);
|
| 548 |
case 4: /* Immediate. */ |
| 549 |
default:
|
| 550 |
return NULL_QREG;
|
| 551 |
} |
| 552 |
} |
| 553 |
/* Should never happen. */
|
| 554 |
return NULL_QREG;
|
| 555 |
} |
| 556 |
|
| 557 |
/* Helper function for gen_ea. Reuse the computed address between the
|
| 558 |
for read/write operands. */
|
| 559 |
static inline TCGv gen_ea_once(CPUM68KState *env, DisasContext *s, |
| 560 |
uint16_t insn, int opsize, TCGv val,
|
| 561 |
TCGv *addrp, ea_what what) |
| 562 |
{
|
| 563 |
TCGv tmp; |
| 564 |
|
| 565 |
if (addrp && what == EA_STORE) {
|
| 566 |
tmp = *addrp; |
| 567 |
} else {
|
| 568 |
tmp = gen_lea(env, s, insn, opsize); |
| 569 |
if (IS_NULL_QREG(tmp))
|
| 570 |
return tmp;
|
| 571 |
if (addrp)
|
| 572 |
*addrp = tmp; |
| 573 |
} |
| 574 |
return gen_ldst(s, opsize, tmp, val, what);
|
| 575 |
} |
| 576 |
|
| 577 |
/* Generate code to load/store a value ito/from an EA. If VAL > 0 this is
|
| 578 |
a write otherwise it is a read (0 == sign extend, -1 == zero extend).
|
| 579 |
ADDRP is non-null for readwrite operands. */
|
| 580 |
static TCGv gen_ea(CPUM68KState *env, DisasContext *s, uint16_t insn,
|
| 581 |
int opsize, TCGv val, TCGv *addrp, ea_what what)
|
| 582 |
{
|
| 583 |
TCGv reg; |
| 584 |
TCGv result; |
| 585 |
uint32_t offset; |
| 586 |
|
| 587 |
switch ((insn >> 3) & 7) { |
| 588 |
case 0: /* Data register direct. */ |
| 589 |
reg = DREG(insn, 0);
|
| 590 |
if (what == EA_STORE) {
|
| 591 |
gen_partset_reg(opsize, reg, val); |
| 592 |
return store_dummy;
|
| 593 |
} else {
|
| 594 |
return gen_extend(reg, opsize, what == EA_LOADS);
|
| 595 |
} |
| 596 |
case 1: /* Address register direct. */ |
| 597 |
reg = AREG(insn, 0);
|
| 598 |
if (what == EA_STORE) {
|
| 599 |
tcg_gen_mov_i32(reg, val); |
| 600 |
return store_dummy;
|
| 601 |
} else {
|
| 602 |
return gen_extend(reg, opsize, what == EA_LOADS);
|
| 603 |
} |
| 604 |
case 2: /* Indirect register */ |
| 605 |
reg = AREG(insn, 0);
|
| 606 |
return gen_ldst(s, opsize, reg, val, what);
|
| 607 |
case 3: /* Indirect postincrement. */ |
| 608 |
reg = AREG(insn, 0);
|
| 609 |
result = gen_ldst(s, opsize, reg, val, what); |
| 610 |
/* ??? This is not exception safe. The instruction may still
|
| 611 |
fault after this point. */
|
| 612 |
if (what == EA_STORE || !addrp)
|
| 613 |
tcg_gen_addi_i32(reg, reg, opsize_bytes(opsize)); |
| 614 |
return result;
|
| 615 |
case 4: /* Indirect predecrememnt. */ |
| 616 |
{
|
| 617 |
TCGv tmp; |
| 618 |
if (addrp && what == EA_STORE) {
|
| 619 |
tmp = *addrp; |
| 620 |
} else {
|
| 621 |
tmp = gen_lea(env, s, insn, opsize); |
| 622 |
if (IS_NULL_QREG(tmp))
|
| 623 |
return tmp;
|
| 624 |
if (addrp)
|
| 625 |
*addrp = tmp; |
| 626 |
} |
| 627 |
result = gen_ldst(s, opsize, tmp, val, what); |
| 628 |
/* ??? This is not exception safe. The instruction may still
|
| 629 |
fault after this point. */
|
| 630 |
if (what == EA_STORE || !addrp) {
|
| 631 |
reg = AREG(insn, 0);
|
| 632 |
tcg_gen_mov_i32(reg, tmp); |
| 633 |
} |
| 634 |
} |
| 635 |
return result;
|
| 636 |
case 5: /* Indirect displacement. */ |
| 637 |
case 6: /* Indirect index + displacement. */ |
| 638 |
return gen_ea_once(env, s, insn, opsize, val, addrp, what);
|
| 639 |
case 7: /* Other */ |
| 640 |
switch (insn & 7) { |
| 641 |
case 0: /* Absolute short. */ |
| 642 |
case 1: /* Absolute long. */ |
| 643 |
case 2: /* pc displacement */ |
| 644 |
case 3: /* pc index+displacement. */ |
| 645 |
return gen_ea_once(env, s, insn, opsize, val, addrp, what);
|
| 646 |
case 4: /* Immediate. */ |
| 647 |
/* Sign extend values for consistency. */
|
| 648 |
switch (opsize) {
|
| 649 |
case OS_BYTE:
|
| 650 |
if (what == EA_LOADS) {
|
| 651 |
offset = cpu_ldsb_code(env, s->pc + 1);
|
| 652 |
} else {
|
| 653 |
offset = cpu_ldub_code(env, s->pc + 1);
|
| 654 |
} |
| 655 |
s->pc += 2;
|
| 656 |
break;
|
| 657 |
case OS_WORD:
|
| 658 |
if (what == EA_LOADS) {
|
| 659 |
offset = cpu_ldsw_code(env, s->pc); |
| 660 |
} else {
|
| 661 |
offset = cpu_lduw_code(env, s->pc); |
| 662 |
} |
| 663 |
s->pc += 2;
|
| 664 |
break;
|
| 665 |
case OS_LONG:
|
| 666 |
offset = read_im32(env, s); |
| 667 |
break;
|
| 668 |
default:
|
| 669 |
qemu_assert(0, "Bad immediate operand"); |
| 670 |
} |
| 671 |
return tcg_const_i32(offset);
|
| 672 |
default:
|
| 673 |
return NULL_QREG;
|
| 674 |
} |
| 675 |
} |
| 676 |
/* Should never happen. */
|
| 677 |
return NULL_QREG;
|
| 678 |
} |
| 679 |
|
| 680 |
/* This generates a conditional branch, clobbering all temporaries. */
|
| 681 |
static void gen_jmpcc(DisasContext *s, int cond, int l1) |
| 682 |
{
|
| 683 |
TCGv tmp; |
| 684 |
|
| 685 |
/* TODO: Optimize compare/branch pairs rather than always flushing
|
| 686 |
flag state to CC_OP_FLAGS. */
|
| 687 |
gen_flush_flags(s); |
| 688 |
switch (cond) {
|
| 689 |
case 0: /* T */ |
| 690 |
tcg_gen_br(l1); |
| 691 |
break;
|
| 692 |
case 1: /* F */ |
| 693 |
break;
|
| 694 |
case 2: /* HI (!C && !Z) */ |
| 695 |
tmp = tcg_temp_new(); |
| 696 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C | CCF_Z); |
| 697 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
| 698 |
break;
|
| 699 |
case 3: /* LS (C || Z) */ |
| 700 |
tmp = tcg_temp_new(); |
| 701 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C | CCF_Z); |
| 702 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
| 703 |
break;
|
| 704 |
case 4: /* CC (!C) */ |
| 705 |
tmp = tcg_temp_new(); |
| 706 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C); |
| 707 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
| 708 |
break;
|
| 709 |
case 5: /* CS (C) */ |
| 710 |
tmp = tcg_temp_new(); |
| 711 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C); |
| 712 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
| 713 |
break;
|
| 714 |
case 6: /* NE (!Z) */ |
| 715 |
tmp = tcg_temp_new(); |
| 716 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_Z); |
| 717 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
| 718 |
break;
|
| 719 |
case 7: /* EQ (Z) */ |
| 720 |
tmp = tcg_temp_new(); |
| 721 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_Z); |
| 722 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
| 723 |
break;
|
| 724 |
case 8: /* VC (!V) */ |
| 725 |
tmp = tcg_temp_new(); |
| 726 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_V); |
| 727 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
| 728 |
break;
|
| 729 |
case 9: /* VS (V) */ |
| 730 |
tmp = tcg_temp_new(); |
| 731 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_V); |
| 732 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
| 733 |
break;
|
| 734 |
case 10: /* PL (!N) */ |
| 735 |
tmp = tcg_temp_new(); |
| 736 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N); |
| 737 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
| 738 |
break;
|
| 739 |
case 11: /* MI (N) */ |
| 740 |
tmp = tcg_temp_new(); |
| 741 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N); |
| 742 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
| 743 |
break;
|
| 744 |
case 12: /* GE (!(N ^ V)) */ |
| 745 |
tmp = tcg_temp_new(); |
| 746 |
assert(CCF_V == (CCF_N >> 2));
|
| 747 |
tcg_gen_shri_i32(tmp, QREG_CC_DEST, 2);
|
| 748 |
tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST); |
| 749 |
tcg_gen_andi_i32(tmp, tmp, CCF_V); |
| 750 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
| 751 |
break;
|
| 752 |
case 13: /* LT (N ^ V) */ |
| 753 |
tmp = tcg_temp_new(); |
| 754 |
assert(CCF_V == (CCF_N >> 2));
|
| 755 |
tcg_gen_shri_i32(tmp, QREG_CC_DEST, 2);
|
| 756 |
tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST); |
| 757 |
tcg_gen_andi_i32(tmp, tmp, CCF_V); |
| 758 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
| 759 |
break;
|
| 760 |
case 14: /* GT (!(Z || (N ^ V))) */ |
| 761 |
tmp = tcg_temp_new(); |
| 762 |
assert(CCF_V == (CCF_N >> 2));
|
| 763 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N); |
| 764 |
tcg_gen_shri_i32(tmp, tmp, 2);
|
| 765 |
tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST); |
| 766 |
tcg_gen_andi_i32(tmp, tmp, CCF_V | CCF_Z); |
| 767 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
| 768 |
break;
|
| 769 |
case 15: /* LE (Z || (N ^ V)) */ |
| 770 |
tmp = tcg_temp_new(); |
| 771 |
assert(CCF_V == (CCF_N >> 2));
|
| 772 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N); |
| 773 |
tcg_gen_shri_i32(tmp, tmp, 2);
|
| 774 |
tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST); |
| 775 |
tcg_gen_andi_i32(tmp, tmp, CCF_V | CCF_Z); |
| 776 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
| 777 |
break;
|
| 778 |
default:
|
| 779 |
/* Should ever happen. */
|
| 780 |
abort(); |
| 781 |
} |
| 782 |
} |
| 783 |
|
| 784 |
DISAS_INSN(scc) |
| 785 |
{
|
| 786 |
int l1;
|
| 787 |
int cond;
|
| 788 |
TCGv reg; |
| 789 |
|
| 790 |
l1 = gen_new_label(); |
| 791 |
cond = (insn >> 8) & 0xf; |
| 792 |
reg = DREG(insn, 0);
|
| 793 |
tcg_gen_andi_i32(reg, reg, 0xffffff00);
|
| 794 |
/* This is safe because we modify the reg directly, with no other values
|
| 795 |
live. */
|
| 796 |
gen_jmpcc(s, cond ^ 1, l1);
|
| 797 |
tcg_gen_ori_i32(reg, reg, 0xff);
|
| 798 |
gen_set_label(l1); |
| 799 |
} |
| 800 |
|
| 801 |
/* Force a TB lookup after an instruction that changes the CPU state. */
|
| 802 |
static void gen_lookup_tb(DisasContext *s) |
| 803 |
{
|
| 804 |
gen_flush_cc_op(s); |
| 805 |
tcg_gen_movi_i32(QREG_PC, s->pc); |
| 806 |
s->is_jmp = DISAS_UPDATE; |
| 807 |
} |
| 808 |
|
| 809 |
/* Generate a jump to an immediate address. */
|
| 810 |
static void gen_jmp_im(DisasContext *s, uint32_t dest) |
| 811 |
{
|
| 812 |
gen_flush_cc_op(s); |
| 813 |
tcg_gen_movi_i32(QREG_PC, dest); |
| 814 |
s->is_jmp = DISAS_JUMP; |
| 815 |
} |
| 816 |
|
| 817 |
/* Generate a jump to the address in qreg DEST. */
|
| 818 |
static void gen_jmp(DisasContext *s, TCGv dest) |
| 819 |
{
|
| 820 |
gen_flush_cc_op(s); |
| 821 |
tcg_gen_mov_i32(QREG_PC, dest); |
| 822 |
s->is_jmp = DISAS_JUMP; |
| 823 |
} |
| 824 |
|
| 825 |
static void gen_exception(DisasContext *s, uint32_t where, int nr) |
| 826 |
{
|
| 827 |
gen_flush_cc_op(s); |
| 828 |
gen_jmp_im(s, where); |
| 829 |
gen_helper_raise_exception(cpu_env, tcg_const_i32(nr)); |
| 830 |
} |
| 831 |
|
| 832 |
static inline void gen_addr_fault(DisasContext *s) |
| 833 |
{
|
| 834 |
gen_exception(s, s->insn_pc, EXCP_ADDRESS); |
| 835 |
} |
| 836 |
|
| 837 |
#define SRC_EA(env, result, opsize, op_sign, addrp) do { \ |
| 838 |
result = gen_ea(env, s, insn, opsize, NULL_QREG, addrp, \ |
| 839 |
op_sign ? EA_LOADS : EA_LOADU); \ |
| 840 |
if (IS_NULL_QREG(result)) { \
|
| 841 |
gen_addr_fault(s); \ |
| 842 |
return; \
|
| 843 |
} \ |
| 844 |
} while (0) |
| 845 |
|
| 846 |
#define DEST_EA(env, insn, opsize, val, addrp) do { \ |
| 847 |
TCGv ea_result = gen_ea(env, s, insn, opsize, val, addrp, EA_STORE); \ |
| 848 |
if (IS_NULL_QREG(ea_result)) { \
|
| 849 |
gen_addr_fault(s); \ |
| 850 |
return; \
|
| 851 |
} \ |
| 852 |
} while (0) |
| 853 |
|
| 854 |
/* Generate a jump to an immediate address. */
|
| 855 |
static void gen_jmp_tb(DisasContext *s, int n, uint32_t dest) |
| 856 |
{
|
| 857 |
TranslationBlock *tb; |
| 858 |
|
| 859 |
tb = s->tb; |
| 860 |
if (unlikely(s->singlestep_enabled)) {
|
| 861 |
gen_exception(s, dest, EXCP_DEBUG); |
| 862 |
} else if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK) || |
| 863 |
(s->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) {
|
| 864 |
tcg_gen_goto_tb(n); |
| 865 |
tcg_gen_movi_i32(QREG_PC, dest); |
| 866 |
tcg_gen_exit_tb((tcg_target_long)tb + n); |
| 867 |
} else {
|
| 868 |
gen_jmp_im(s, dest); |
| 869 |
tcg_gen_exit_tb(0);
|
| 870 |
} |
| 871 |
s->is_jmp = DISAS_TB_JUMP; |
| 872 |
} |
| 873 |
|
| 874 |
DISAS_INSN(undef_mac) |
| 875 |
{
|
| 876 |
gen_exception(s, s->pc - 2, EXCP_LINEA);
|
| 877 |
} |
| 878 |
|
| 879 |
DISAS_INSN(undef_fpu) |
| 880 |
{
|
| 881 |
gen_exception(s, s->pc - 2, EXCP_LINEF);
|
| 882 |
} |
| 883 |
|
| 884 |
DISAS_INSN(undef) |
| 885 |
{
|
| 886 |
gen_exception(s, s->pc - 2, EXCP_UNSUPPORTED);
|
| 887 |
cpu_abort(env, "Illegal instruction: %04x @ %08x", insn, s->pc - 2); |
| 888 |
} |
| 889 |
|
| 890 |
DISAS_INSN(mulw) |
| 891 |
{
|
| 892 |
TCGv reg; |
| 893 |
TCGv tmp; |
| 894 |
TCGv src; |
| 895 |
int sign;
|
| 896 |
|
| 897 |
sign = (insn & 0x100) != 0; |
| 898 |
reg = DREG(insn, 9);
|
| 899 |
tmp = tcg_temp_new(); |
| 900 |
if (sign)
|
| 901 |
tcg_gen_ext16s_i32(tmp, reg); |
| 902 |
else
|
| 903 |
tcg_gen_ext16u_i32(tmp, reg); |
| 904 |
SRC_EA(env, src, OS_WORD, sign, NULL);
|
| 905 |
tcg_gen_mul_i32(tmp, tmp, src); |
| 906 |
tcg_gen_mov_i32(reg, tmp); |
| 907 |
/* Unlike m68k, coldfire always clears the overflow bit. */
|
| 908 |
gen_logic_cc(s, tmp); |
| 909 |
} |
| 910 |
|
| 911 |
DISAS_INSN(divw) |
| 912 |
{
|
| 913 |
TCGv reg; |
| 914 |
TCGv tmp; |
| 915 |
TCGv src; |
| 916 |
int sign;
|
| 917 |
|
| 918 |
sign = (insn & 0x100) != 0; |
| 919 |
reg = DREG(insn, 9);
|
| 920 |
if (sign) {
|
| 921 |
tcg_gen_ext16s_i32(QREG_DIV1, reg); |
| 922 |
} else {
|
| 923 |
tcg_gen_ext16u_i32(QREG_DIV1, reg); |
| 924 |
} |
| 925 |
SRC_EA(env, src, OS_WORD, sign, NULL);
|
| 926 |
tcg_gen_mov_i32(QREG_DIV2, src); |
| 927 |
if (sign) {
|
| 928 |
gen_helper_divs(cpu_env, tcg_const_i32(1));
|
| 929 |
} else {
|
| 930 |
gen_helper_divu(cpu_env, tcg_const_i32(1));
|
| 931 |
} |
| 932 |
|
| 933 |
tmp = tcg_temp_new(); |
| 934 |
src = tcg_temp_new(); |
| 935 |
tcg_gen_ext16u_i32(tmp, QREG_DIV1); |
| 936 |
tcg_gen_shli_i32(src, QREG_DIV2, 16);
|
| 937 |
tcg_gen_or_i32(reg, tmp, src); |
| 938 |
s->cc_op = CC_OP_FLAGS; |
| 939 |
} |
| 940 |
|
| 941 |
DISAS_INSN(divl) |
| 942 |
{
|
| 943 |
TCGv num; |
| 944 |
TCGv den; |
| 945 |
TCGv reg; |
| 946 |
uint16_t ext; |
| 947 |
|
| 948 |
ext = cpu_lduw_code(env, s->pc); |
| 949 |
s->pc += 2;
|
| 950 |
if (ext & 0x87f8) { |
| 951 |
gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED);
|
| 952 |
return;
|
| 953 |
} |
| 954 |
num = DREG(ext, 12);
|
| 955 |
reg = DREG(ext, 0);
|
| 956 |
tcg_gen_mov_i32(QREG_DIV1, num); |
| 957 |
SRC_EA(env, den, OS_LONG, 0, NULL); |
| 958 |
tcg_gen_mov_i32(QREG_DIV2, den); |
| 959 |
if (ext & 0x0800) { |
| 960 |
gen_helper_divs(cpu_env, tcg_const_i32(0));
|
| 961 |
} else {
|
| 962 |
gen_helper_divu(cpu_env, tcg_const_i32(0));
|
| 963 |
} |
| 964 |
if ((ext & 7) == ((ext >> 12) & 7)) { |
| 965 |
/* div */
|
| 966 |
tcg_gen_mov_i32 (reg, QREG_DIV1); |
| 967 |
} else {
|
| 968 |
/* rem */
|
| 969 |
tcg_gen_mov_i32 (reg, QREG_DIV2); |
| 970 |
} |
| 971 |
s->cc_op = CC_OP_FLAGS; |
| 972 |
} |
| 973 |
|
| 974 |
DISAS_INSN(addsub) |
| 975 |
{
|
| 976 |
TCGv reg; |
| 977 |
TCGv dest; |
| 978 |
TCGv src; |
| 979 |
TCGv tmp; |
| 980 |
TCGv addr; |
| 981 |
int add;
|
| 982 |
|
| 983 |
add = (insn & 0x4000) != 0; |
| 984 |
reg = DREG(insn, 9);
|
| 985 |
dest = tcg_temp_new(); |
| 986 |
if (insn & 0x100) { |
| 987 |
SRC_EA(env, tmp, OS_LONG, 0, &addr);
|
| 988 |
src = reg; |
| 989 |
} else {
|
| 990 |
tmp = reg; |
| 991 |
SRC_EA(env, src, OS_LONG, 0, NULL); |
| 992 |
} |
| 993 |
if (add) {
|
| 994 |
tcg_gen_add_i32(dest, tmp, src); |
| 995 |
gen_helper_xflag_lt(QREG_CC_X, dest, src); |
| 996 |
s->cc_op = CC_OP_ADD; |
| 997 |
} else {
|
| 998 |
gen_helper_xflag_lt(QREG_CC_X, tmp, src); |
| 999 |
tcg_gen_sub_i32(dest, tmp, src); |
| 1000 |
s->cc_op = CC_OP_SUB; |
| 1001 |
} |
| 1002 |
gen_update_cc_add(dest, src); |
| 1003 |
if (insn & 0x100) { |
| 1004 |
DEST_EA(env, insn, OS_LONG, dest, &addr); |
| 1005 |
} else {
|
| 1006 |
tcg_gen_mov_i32(reg, dest); |
| 1007 |
} |
| 1008 |
} |
| 1009 |
|
| 1010 |
|
| 1011 |
/* Reverse the order of the bits in REG. */
|
| 1012 |
DISAS_INSN(bitrev) |
| 1013 |
{
|
| 1014 |
TCGv reg; |
| 1015 |
reg = DREG(insn, 0);
|
| 1016 |
gen_helper_bitrev(reg, reg); |
| 1017 |
} |
| 1018 |
|
| 1019 |
DISAS_INSN(bitop_reg) |
| 1020 |
{
|
| 1021 |
int opsize;
|
| 1022 |
int op;
|
| 1023 |
TCGv src1; |
| 1024 |
TCGv src2; |
| 1025 |
TCGv tmp; |
| 1026 |
TCGv addr; |
| 1027 |
TCGv dest; |
| 1028 |
|
| 1029 |
if ((insn & 0x38) != 0) |
| 1030 |
opsize = OS_BYTE; |
| 1031 |
else
|
| 1032 |
opsize = OS_LONG; |
| 1033 |
op = (insn >> 6) & 3; |
| 1034 |
SRC_EA(env, src1, opsize, 0, op ? &addr: NULL); |
| 1035 |
src2 = DREG(insn, 9);
|
| 1036 |
dest = tcg_temp_new(); |
| 1037 |
|
| 1038 |
gen_flush_flags(s); |
| 1039 |
tmp = tcg_temp_new(); |
| 1040 |
if (opsize == OS_BYTE)
|
| 1041 |
tcg_gen_andi_i32(tmp, src2, 7);
|
| 1042 |
else
|
| 1043 |
tcg_gen_andi_i32(tmp, src2, 31);
|
| 1044 |
src2 = tmp; |
| 1045 |
tmp = tcg_temp_new(); |
| 1046 |
tcg_gen_shr_i32(tmp, src1, src2); |
| 1047 |
tcg_gen_andi_i32(tmp, tmp, 1);
|
| 1048 |
tcg_gen_shli_i32(tmp, tmp, 2);
|
| 1049 |
/* Clear CCF_Z if bit set. */
|
| 1050 |
tcg_gen_ori_i32(QREG_CC_DEST, QREG_CC_DEST, CCF_Z); |
| 1051 |
tcg_gen_xor_i32(QREG_CC_DEST, QREG_CC_DEST, tmp); |
| 1052 |
|
| 1053 |
tcg_gen_shl_i32(tmp, tcg_const_i32(1), src2);
|
| 1054 |
switch (op) {
|
| 1055 |
case 1: /* bchg */ |
| 1056 |
tcg_gen_xor_i32(dest, src1, tmp); |
| 1057 |
break;
|
| 1058 |
case 2: /* bclr */ |
| 1059 |
tcg_gen_not_i32(tmp, tmp); |
| 1060 |
tcg_gen_and_i32(dest, src1, tmp); |
| 1061 |
break;
|
| 1062 |
case 3: /* bset */ |
| 1063 |
tcg_gen_or_i32(dest, src1, tmp); |
| 1064 |
break;
|
| 1065 |
default: /* btst */ |
| 1066 |
break;
|
| 1067 |
} |
| 1068 |
if (op)
|
| 1069 |
DEST_EA(env, insn, opsize, dest, &addr); |
| 1070 |
} |
| 1071 |
|
| 1072 |
DISAS_INSN(sats) |
| 1073 |
{
|
| 1074 |
TCGv reg; |
| 1075 |
reg = DREG(insn, 0);
|
| 1076 |
gen_flush_flags(s); |
| 1077 |
gen_helper_sats(reg, reg, QREG_CC_DEST); |
| 1078 |
gen_logic_cc(s, reg); |
| 1079 |
} |
| 1080 |
|
| 1081 |
static void gen_push(DisasContext *s, TCGv val) |
| 1082 |
{
|
| 1083 |
TCGv tmp; |
| 1084 |
|
| 1085 |
tmp = tcg_temp_new(); |
| 1086 |
tcg_gen_subi_i32(tmp, QREG_SP, 4);
|
| 1087 |
gen_store(s, OS_LONG, tmp, val); |
| 1088 |
tcg_gen_mov_i32(QREG_SP, tmp); |
| 1089 |
} |
| 1090 |
|
| 1091 |
DISAS_INSN(movem) |
| 1092 |
{
|
| 1093 |
TCGv addr; |
| 1094 |
int i;
|
| 1095 |
uint16_t mask; |
| 1096 |
TCGv reg; |
| 1097 |
TCGv tmp; |
| 1098 |
int is_load;
|
| 1099 |
|
| 1100 |
mask = cpu_lduw_code(env, s->pc); |
| 1101 |
s->pc += 2;
|
| 1102 |
tmp = gen_lea(env, s, insn, OS_LONG); |
| 1103 |
if (IS_NULL_QREG(tmp)) {
|
| 1104 |
gen_addr_fault(s); |
| 1105 |
return;
|
| 1106 |
} |
| 1107 |
addr = tcg_temp_new(); |
| 1108 |
tcg_gen_mov_i32(addr, tmp); |
| 1109 |
is_load = ((insn & 0x0400) != 0); |
| 1110 |
for (i = 0; i < 16; i++, mask >>= 1) { |
| 1111 |
if (mask & 1) { |
| 1112 |
if (i < 8) |
| 1113 |
reg = DREG(i, 0);
|
| 1114 |
else
|
| 1115 |
reg = AREG(i, 0);
|
| 1116 |
if (is_load) {
|
| 1117 |
tmp = gen_load(s, OS_LONG, addr, 0);
|
| 1118 |
tcg_gen_mov_i32(reg, tmp); |
| 1119 |
} else {
|
| 1120 |
gen_store(s, OS_LONG, addr, reg); |
| 1121 |
} |
| 1122 |
if (mask != 1) |
| 1123 |
tcg_gen_addi_i32(addr, addr, 4);
|
| 1124 |
} |
| 1125 |
} |
| 1126 |
} |
| 1127 |
|
| 1128 |
DISAS_INSN(bitop_im) |
| 1129 |
{
|
| 1130 |
int opsize;
|
| 1131 |
int op;
|
| 1132 |
TCGv src1; |
| 1133 |
uint32_t mask; |
| 1134 |
int bitnum;
|
| 1135 |
TCGv tmp; |
| 1136 |
TCGv addr; |
| 1137 |
|
| 1138 |
if ((insn & 0x38) != 0) |
| 1139 |
opsize = OS_BYTE; |
| 1140 |
else
|
| 1141 |
opsize = OS_LONG; |
| 1142 |
op = (insn >> 6) & 3; |
| 1143 |
|
| 1144 |
bitnum = cpu_lduw_code(env, s->pc); |
| 1145 |
s->pc += 2;
|
| 1146 |
if (bitnum & 0xff00) { |
| 1147 |
disas_undef(env, s, insn); |
| 1148 |
return;
|
| 1149 |
} |
| 1150 |
|
| 1151 |
SRC_EA(env, src1, opsize, 0, op ? &addr: NULL); |
| 1152 |
|
| 1153 |
gen_flush_flags(s); |
| 1154 |
if (opsize == OS_BYTE)
|
| 1155 |
bitnum &= 7;
|
| 1156 |
else
|
| 1157 |
bitnum &= 31;
|
| 1158 |
mask = 1 << bitnum;
|
| 1159 |
|
| 1160 |
tmp = tcg_temp_new(); |
| 1161 |
assert (CCF_Z == (1 << 2)); |
| 1162 |
if (bitnum > 2) |
| 1163 |
tcg_gen_shri_i32(tmp, src1, bitnum - 2);
|
| 1164 |
else if (bitnum < 2) |
| 1165 |
tcg_gen_shli_i32(tmp, src1, 2 - bitnum);
|
| 1166 |
else
|
| 1167 |
tcg_gen_mov_i32(tmp, src1); |
| 1168 |
tcg_gen_andi_i32(tmp, tmp, CCF_Z); |
| 1169 |
/* Clear CCF_Z if bit set. */
|
| 1170 |
tcg_gen_ori_i32(QREG_CC_DEST, QREG_CC_DEST, CCF_Z); |
| 1171 |
tcg_gen_xor_i32(QREG_CC_DEST, QREG_CC_DEST, tmp); |
| 1172 |
if (op) {
|
| 1173 |
switch (op) {
|
| 1174 |
case 1: /* bchg */ |
| 1175 |
tcg_gen_xori_i32(tmp, src1, mask); |
| 1176 |
break;
|
| 1177 |
case 2: /* bclr */ |
| 1178 |
tcg_gen_andi_i32(tmp, src1, ~mask); |
| 1179 |
break;
|
| 1180 |
case 3: /* bset */ |
| 1181 |
tcg_gen_ori_i32(tmp, src1, mask); |
| 1182 |
break;
|
| 1183 |
default: /* btst */ |
| 1184 |
break;
|
| 1185 |
} |
| 1186 |
DEST_EA(env, insn, opsize, tmp, &addr); |
| 1187 |
} |
| 1188 |
} |
| 1189 |
|
| 1190 |
DISAS_INSN(arith_im) |
| 1191 |
{
|
| 1192 |
int op;
|
| 1193 |
uint32_t im; |
| 1194 |
TCGv src1; |
| 1195 |
TCGv dest; |
| 1196 |
TCGv addr; |
| 1197 |
|
| 1198 |
op = (insn >> 9) & 7; |
| 1199 |
SRC_EA(env, src1, OS_LONG, 0, (op == 6) ? NULL : &addr); |
| 1200 |
im = read_im32(env, s); |
| 1201 |
dest = tcg_temp_new(); |
| 1202 |
switch (op) {
|
| 1203 |
case 0: /* ori */ |
| 1204 |
tcg_gen_ori_i32(dest, src1, im); |
| 1205 |
gen_logic_cc(s, dest); |
| 1206 |
break;
|
| 1207 |
case 1: /* andi */ |
| 1208 |
tcg_gen_andi_i32(dest, src1, im); |
| 1209 |
gen_logic_cc(s, dest); |
| 1210 |
break;
|
| 1211 |
case 2: /* subi */ |
| 1212 |
tcg_gen_mov_i32(dest, src1); |
| 1213 |
gen_helper_xflag_lt(QREG_CC_X, dest, tcg_const_i32(im)); |
| 1214 |
tcg_gen_subi_i32(dest, dest, im); |
| 1215 |
gen_update_cc_add(dest, tcg_const_i32(im)); |
| 1216 |
s->cc_op = CC_OP_SUB; |
| 1217 |
break;
|
| 1218 |
case 3: /* addi */ |
| 1219 |
tcg_gen_mov_i32(dest, src1); |
| 1220 |
tcg_gen_addi_i32(dest, dest, im); |
| 1221 |
gen_update_cc_add(dest, tcg_const_i32(im)); |
| 1222 |
gen_helper_xflag_lt(QREG_CC_X, dest, tcg_const_i32(im)); |
| 1223 |
s->cc_op = CC_OP_ADD; |
| 1224 |
break;
|
| 1225 |
case 5: /* eori */ |
| 1226 |
tcg_gen_xori_i32(dest, src1, im); |
| 1227 |
gen_logic_cc(s, dest); |
| 1228 |
break;
|
| 1229 |
case 6: /* cmpi */ |
| 1230 |
tcg_gen_mov_i32(dest, src1); |
| 1231 |
tcg_gen_subi_i32(dest, dest, im); |
| 1232 |
gen_update_cc_add(dest, tcg_const_i32(im)); |
| 1233 |
s->cc_op = CC_OP_SUB; |
| 1234 |
break;
|
| 1235 |
default:
|
| 1236 |
abort(); |
| 1237 |
} |
| 1238 |
if (op != 6) { |
| 1239 |
DEST_EA(env, insn, OS_LONG, dest, &addr); |
| 1240 |
} |
| 1241 |
} |
| 1242 |
|
| 1243 |
DISAS_INSN(byterev) |
| 1244 |
{
|
| 1245 |
TCGv reg; |
| 1246 |
|
| 1247 |
reg = DREG(insn, 0);
|
| 1248 |
tcg_gen_bswap32_i32(reg, reg); |
| 1249 |
} |
| 1250 |
|
| 1251 |
DISAS_INSN(move) |
| 1252 |
{
|
| 1253 |
TCGv src; |
| 1254 |
TCGv dest; |
| 1255 |
int op;
|
| 1256 |
int opsize;
|
| 1257 |
|
| 1258 |
switch (insn >> 12) { |
| 1259 |
case 1: /* move.b */ |
| 1260 |
opsize = OS_BYTE; |
| 1261 |
break;
|
| 1262 |
case 2: /* move.l */ |
| 1263 |
opsize = OS_LONG; |
| 1264 |
break;
|
| 1265 |
case 3: /* move.w */ |
| 1266 |
opsize = OS_WORD; |
| 1267 |
break;
|
| 1268 |
default:
|
| 1269 |
abort(); |
| 1270 |
} |
| 1271 |
SRC_EA(env, src, opsize, 1, NULL); |
| 1272 |
op = (insn >> 6) & 7; |
| 1273 |
if (op == 1) { |
| 1274 |
/* movea */
|
| 1275 |
/* The value will already have been sign extended. */
|
| 1276 |
dest = AREG(insn, 9);
|
| 1277 |
tcg_gen_mov_i32(dest, src); |
| 1278 |
} else {
|
| 1279 |
/* normal move */
|
| 1280 |
uint16_t dest_ea; |
| 1281 |
dest_ea = ((insn >> 9) & 7) | (op << 3); |
| 1282 |
DEST_EA(env, dest_ea, opsize, src, NULL);
|
| 1283 |
/* This will be correct because loads sign extend. */
|
| 1284 |
gen_logic_cc(s, src); |
| 1285 |
} |
| 1286 |
} |
| 1287 |
|
| 1288 |
DISAS_INSN(negx) |
| 1289 |
{
|
| 1290 |
TCGv reg; |
| 1291 |
|
| 1292 |
gen_flush_flags(s); |
| 1293 |
reg = DREG(insn, 0);
|
| 1294 |
gen_helper_subx_cc(reg, cpu_env, tcg_const_i32(0), reg);
|
| 1295 |
} |
| 1296 |
|
| 1297 |
DISAS_INSN(lea) |
| 1298 |
{
|
| 1299 |
TCGv reg; |
| 1300 |
TCGv tmp; |
| 1301 |
|
| 1302 |
reg = AREG(insn, 9);
|
| 1303 |
tmp = gen_lea(env, s, insn, OS_LONG); |
| 1304 |
if (IS_NULL_QREG(tmp)) {
|
| 1305 |
gen_addr_fault(s); |
| 1306 |
return;
|
| 1307 |
} |
| 1308 |
tcg_gen_mov_i32(reg, tmp); |
| 1309 |
} |
| 1310 |
|
| 1311 |
DISAS_INSN(clr) |
| 1312 |
{
|
| 1313 |
int opsize;
|
| 1314 |
|
| 1315 |
switch ((insn >> 6) & 3) { |
| 1316 |
case 0: /* clr.b */ |
| 1317 |
opsize = OS_BYTE; |
| 1318 |
break;
|
| 1319 |
case 1: /* clr.w */ |
| 1320 |
opsize = OS_WORD; |
| 1321 |
break;
|
| 1322 |
case 2: /* clr.l */ |
| 1323 |
opsize = OS_LONG; |
| 1324 |
break;
|
| 1325 |
default:
|
| 1326 |
abort(); |
| 1327 |
} |
| 1328 |
DEST_EA(env, insn, opsize, tcg_const_i32(0), NULL); |
| 1329 |
gen_logic_cc(s, tcg_const_i32(0));
|
| 1330 |
} |
| 1331 |
|
| 1332 |
static TCGv gen_get_ccr(DisasContext *s)
|
| 1333 |
{
|
| 1334 |
TCGv dest; |
| 1335 |
|
| 1336 |
gen_flush_flags(s); |
| 1337 |
dest = tcg_temp_new(); |
| 1338 |
tcg_gen_shli_i32(dest, QREG_CC_X, 4);
|
| 1339 |
tcg_gen_or_i32(dest, dest, QREG_CC_DEST); |
| 1340 |
return dest;
|
| 1341 |
} |
| 1342 |
|
| 1343 |
DISAS_INSN(move_from_ccr) |
| 1344 |
{
|
| 1345 |
TCGv reg; |
| 1346 |
TCGv ccr; |
| 1347 |
|
| 1348 |
ccr = gen_get_ccr(s); |
| 1349 |
reg = DREG(insn, 0);
|
| 1350 |
gen_partset_reg(OS_WORD, reg, ccr); |
| 1351 |
} |
| 1352 |
|
| 1353 |
DISAS_INSN(neg) |
| 1354 |
{
|
| 1355 |
TCGv reg; |
| 1356 |
TCGv src1; |
| 1357 |
|
| 1358 |
reg = DREG(insn, 0);
|
| 1359 |
src1 = tcg_temp_new(); |
| 1360 |
tcg_gen_mov_i32(src1, reg); |
| 1361 |
tcg_gen_neg_i32(reg, src1); |
| 1362 |
s->cc_op = CC_OP_SUB; |
| 1363 |
gen_update_cc_add(reg, src1); |
| 1364 |
gen_helper_xflag_lt(QREG_CC_X, tcg_const_i32(0), src1);
|
| 1365 |
s->cc_op = CC_OP_SUB; |
| 1366 |
} |
| 1367 |
|
| 1368 |
static void gen_set_sr_im(DisasContext *s, uint16_t val, int ccr_only) |
| 1369 |
{
|
| 1370 |
tcg_gen_movi_i32(QREG_CC_DEST, val & 0xf);
|
| 1371 |
tcg_gen_movi_i32(QREG_CC_X, (val & 0x10) >> 4); |
| 1372 |
if (!ccr_only) {
|
| 1373 |
gen_helper_set_sr(cpu_env, tcg_const_i32(val & 0xff00));
|
| 1374 |
} |
| 1375 |
} |
| 1376 |
|
| 1377 |
static void gen_set_sr(CPUM68KState *env, DisasContext *s, uint16_t insn, |
| 1378 |
int ccr_only)
|
| 1379 |
{
|
| 1380 |
TCGv tmp; |
| 1381 |
TCGv reg; |
| 1382 |
|
| 1383 |
s->cc_op = CC_OP_FLAGS; |
| 1384 |
if ((insn & 0x38) == 0) |
| 1385 |
{
|
| 1386 |
tmp = tcg_temp_new(); |
| 1387 |
reg = DREG(insn, 0);
|
| 1388 |
tcg_gen_andi_i32(QREG_CC_DEST, reg, 0xf);
|
| 1389 |
tcg_gen_shri_i32(tmp, reg, 4);
|
| 1390 |
tcg_gen_andi_i32(QREG_CC_X, tmp, 1);
|
| 1391 |
if (!ccr_only) {
|
| 1392 |
gen_helper_set_sr(cpu_env, reg); |
| 1393 |
} |
| 1394 |
} |
| 1395 |
else if ((insn & 0x3f) == 0x3c) |
| 1396 |
{
|
| 1397 |
uint16_t val; |
| 1398 |
val = cpu_lduw_code(env, s->pc); |
| 1399 |
s->pc += 2;
|
| 1400 |
gen_set_sr_im(s, val, ccr_only); |
| 1401 |
} |
| 1402 |
else
|
| 1403 |
disas_undef(env, s, insn); |
| 1404 |
} |
| 1405 |
|
| 1406 |
DISAS_INSN(move_to_ccr) |
| 1407 |
{
|
| 1408 |
gen_set_sr(env, s, insn, 1);
|
| 1409 |
} |
| 1410 |
|
| 1411 |
DISAS_INSN(not) |
| 1412 |
{
|
| 1413 |
TCGv reg; |
| 1414 |
|
| 1415 |
reg = DREG(insn, 0);
|
| 1416 |
tcg_gen_not_i32(reg, reg); |
| 1417 |
gen_logic_cc(s, reg); |
| 1418 |
} |
| 1419 |
|
| 1420 |
DISAS_INSN(swap) |
| 1421 |
{
|
| 1422 |
TCGv src1; |
| 1423 |
TCGv src2; |
| 1424 |
TCGv reg; |
| 1425 |
|
| 1426 |
src1 = tcg_temp_new(); |
| 1427 |
src2 = tcg_temp_new(); |
| 1428 |
reg = DREG(insn, 0);
|
| 1429 |
tcg_gen_shli_i32(src1, reg, 16);
|
| 1430 |
tcg_gen_shri_i32(src2, reg, 16);
|
| 1431 |
tcg_gen_or_i32(reg, src1, src2); |
| 1432 |
gen_logic_cc(s, reg); |
| 1433 |
} |
| 1434 |
|
| 1435 |
DISAS_INSN(pea) |
| 1436 |
{
|
| 1437 |
TCGv tmp; |
| 1438 |
|
| 1439 |
tmp = gen_lea(env, s, insn, OS_LONG); |
| 1440 |
if (IS_NULL_QREG(tmp)) {
|
| 1441 |
gen_addr_fault(s); |
| 1442 |
return;
|
| 1443 |
} |
| 1444 |
gen_push(s, tmp); |
| 1445 |
} |
| 1446 |
|
| 1447 |
DISAS_INSN(ext) |
| 1448 |
{
|
| 1449 |
int op;
|
| 1450 |
TCGv reg; |
| 1451 |
TCGv tmp; |
| 1452 |
|
| 1453 |
reg = DREG(insn, 0);
|
| 1454 |
op = (insn >> 6) & 7; |
| 1455 |
tmp = tcg_temp_new(); |
| 1456 |
if (op == 3) |
| 1457 |
tcg_gen_ext16s_i32(tmp, reg); |
| 1458 |
else
|
| 1459 |
tcg_gen_ext8s_i32(tmp, reg); |
| 1460 |
if (op == 2) |
| 1461 |
gen_partset_reg(OS_WORD, reg, tmp); |
| 1462 |
else
|
| 1463 |
tcg_gen_mov_i32(reg, tmp); |
| 1464 |
gen_logic_cc(s, tmp); |
| 1465 |
} |
| 1466 |
|
| 1467 |
DISAS_INSN(tst) |
| 1468 |
{
|
| 1469 |
int opsize;
|
| 1470 |
TCGv tmp; |
| 1471 |
|
| 1472 |
switch ((insn >> 6) & 3) { |
| 1473 |
case 0: /* tst.b */ |
| 1474 |
opsize = OS_BYTE; |
| 1475 |
break;
|
| 1476 |
case 1: /* tst.w */ |
| 1477 |
opsize = OS_WORD; |
| 1478 |
break;
|
| 1479 |
case 2: /* tst.l */ |
| 1480 |
opsize = OS_LONG; |
| 1481 |
break;
|
| 1482 |
default:
|
| 1483 |
abort(); |
| 1484 |
} |
| 1485 |
SRC_EA(env, tmp, opsize, 1, NULL); |
| 1486 |
gen_logic_cc(s, tmp); |
| 1487 |
} |
| 1488 |
|
| 1489 |
DISAS_INSN(pulse) |
| 1490 |
{
|
| 1491 |
/* Implemented as a NOP. */
|
| 1492 |
} |
| 1493 |
|
| 1494 |
DISAS_INSN(illegal) |
| 1495 |
{
|
| 1496 |
gen_exception(s, s->pc - 2, EXCP_ILLEGAL);
|
| 1497 |
} |
| 1498 |
|
| 1499 |
/* ??? This should be atomic. */
|
| 1500 |
DISAS_INSN(tas) |
| 1501 |
{
|
| 1502 |
TCGv dest; |
| 1503 |
TCGv src1; |
| 1504 |
TCGv addr; |
| 1505 |
|
| 1506 |
dest = tcg_temp_new(); |
| 1507 |
SRC_EA(env, src1, OS_BYTE, 1, &addr);
|
| 1508 |
gen_logic_cc(s, src1); |
| 1509 |
tcg_gen_ori_i32(dest, src1, 0x80);
|
| 1510 |
DEST_EA(env, insn, OS_BYTE, dest, &addr); |
| 1511 |
} |
| 1512 |
|
| 1513 |
DISAS_INSN(mull) |
| 1514 |
{
|
| 1515 |
uint16_t ext; |
| 1516 |
TCGv reg; |
| 1517 |
TCGv src1; |
| 1518 |
TCGv dest; |
| 1519 |
|
| 1520 |
/* The upper 32 bits of the product are discarded, so
|
| 1521 |
muls.l and mulu.l are functionally equivalent. */
|
| 1522 |
ext = cpu_lduw_code(env, s->pc); |
| 1523 |
s->pc += 2;
|
| 1524 |
if (ext & 0x87ff) { |
| 1525 |
gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED);
|
| 1526 |
return;
|
| 1527 |
} |
| 1528 |
reg = DREG(ext, 12);
|
| 1529 |
SRC_EA(env, src1, OS_LONG, 0, NULL); |
| 1530 |
dest = tcg_temp_new(); |
| 1531 |
tcg_gen_mul_i32(dest, src1, reg); |
| 1532 |
tcg_gen_mov_i32(reg, dest); |
| 1533 |
/* Unlike m68k, coldfire always clears the overflow bit. */
|
| 1534 |
gen_logic_cc(s, dest); |
| 1535 |
} |
| 1536 |
|
| 1537 |
DISAS_INSN(link) |
| 1538 |
{
|
| 1539 |
int16_t offset; |
| 1540 |
TCGv reg; |
| 1541 |
TCGv tmp; |
| 1542 |
|
| 1543 |
offset = cpu_ldsw_code(env, s->pc); |
| 1544 |
s->pc += 2;
|
| 1545 |
reg = AREG(insn, 0);
|
| 1546 |
tmp = tcg_temp_new(); |
| 1547 |
tcg_gen_subi_i32(tmp, QREG_SP, 4);
|
| 1548 |
gen_store(s, OS_LONG, tmp, reg); |
| 1549 |
if ((insn & 7) != 7) |
| 1550 |
tcg_gen_mov_i32(reg, tmp); |
| 1551 |
tcg_gen_addi_i32(QREG_SP, tmp, offset); |
| 1552 |
} |
| 1553 |
|
| 1554 |
DISAS_INSN(unlk) |
| 1555 |
{
|
| 1556 |
TCGv src; |
| 1557 |
TCGv reg; |
| 1558 |
TCGv tmp; |
| 1559 |
|
| 1560 |
src = tcg_temp_new(); |
| 1561 |
reg = AREG(insn, 0);
|
| 1562 |
tcg_gen_mov_i32(src, reg); |
| 1563 |
tmp = gen_load(s, OS_LONG, src, 0);
|
| 1564 |
tcg_gen_mov_i32(reg, tmp); |
| 1565 |
tcg_gen_addi_i32(QREG_SP, src, 4);
|
| 1566 |
} |
| 1567 |
|
| 1568 |
DISAS_INSN(nop) |
| 1569 |
{
|
| 1570 |
} |
| 1571 |
|
| 1572 |
DISAS_INSN(rts) |
| 1573 |
{
|
| 1574 |
TCGv tmp; |
| 1575 |
|
| 1576 |
tmp = gen_load(s, OS_LONG, QREG_SP, 0);
|
| 1577 |
tcg_gen_addi_i32(QREG_SP, QREG_SP, 4);
|
| 1578 |
gen_jmp(s, tmp); |
| 1579 |
} |
| 1580 |
|
| 1581 |
DISAS_INSN(jump) |
| 1582 |
{
|
| 1583 |
TCGv tmp; |
| 1584 |
|
| 1585 |
/* Load the target address first to ensure correct exception
|
| 1586 |
behavior. */
|
| 1587 |
tmp = gen_lea(env, s, insn, OS_LONG); |
| 1588 |
if (IS_NULL_QREG(tmp)) {
|
| 1589 |
gen_addr_fault(s); |
| 1590 |
return;
|
| 1591 |
} |
| 1592 |
if ((insn & 0x40) == 0) { |
| 1593 |
/* jsr */
|
| 1594 |
gen_push(s, tcg_const_i32(s->pc)); |
| 1595 |
} |
| 1596 |
gen_jmp(s, tmp); |
| 1597 |
} |
| 1598 |
|
| 1599 |
DISAS_INSN(addsubq) |
| 1600 |
{
|
| 1601 |
TCGv src1; |
| 1602 |
TCGv src2; |
| 1603 |
TCGv dest; |
| 1604 |
int val;
|
| 1605 |
TCGv addr; |
| 1606 |
|
| 1607 |
SRC_EA(env, src1, OS_LONG, 0, &addr);
|
| 1608 |
val = (insn >> 9) & 7; |
| 1609 |
if (val == 0) |
| 1610 |
val = 8;
|
| 1611 |
dest = tcg_temp_new(); |
| 1612 |
tcg_gen_mov_i32(dest, src1); |
| 1613 |
if ((insn & 0x38) == 0x08) { |
| 1614 |
/* Don't update condition codes if the destination is an
|
| 1615 |
address register. */
|
| 1616 |
if (insn & 0x0100) { |
| 1617 |
tcg_gen_subi_i32(dest, dest, val); |
| 1618 |
} else {
|
| 1619 |
tcg_gen_addi_i32(dest, dest, val); |
| 1620 |
} |
| 1621 |
} else {
|
| 1622 |
src2 = tcg_const_i32(val); |
| 1623 |
if (insn & 0x0100) { |
| 1624 |
gen_helper_xflag_lt(QREG_CC_X, dest, src2); |
| 1625 |
tcg_gen_subi_i32(dest, dest, val); |
| 1626 |
s->cc_op = CC_OP_SUB; |
| 1627 |
} else {
|
| 1628 |
tcg_gen_addi_i32(dest, dest, val); |
| 1629 |
gen_helper_xflag_lt(QREG_CC_X, dest, src2); |
| 1630 |
s->cc_op = CC_OP_ADD; |
| 1631 |
} |
| 1632 |
gen_update_cc_add(dest, src2); |
| 1633 |
} |
| 1634 |
DEST_EA(env, insn, OS_LONG, dest, &addr); |
| 1635 |
} |
| 1636 |
|
| 1637 |
DISAS_INSN(tpf) |
| 1638 |
{
|
| 1639 |
switch (insn & 7) { |
| 1640 |
case 2: /* One extension word. */ |
| 1641 |
s->pc += 2;
|
| 1642 |
break;
|
| 1643 |
case 3: /* Two extension words. */ |
| 1644 |
s->pc += 4;
|
| 1645 |
break;
|
| 1646 |
case 4: /* No extension words. */ |
| 1647 |
break;
|
| 1648 |
default:
|
| 1649 |
disas_undef(env, s, insn); |
| 1650 |
} |
| 1651 |
} |
| 1652 |
|
| 1653 |
DISAS_INSN(branch) |
| 1654 |
{
|
| 1655 |
int32_t offset; |
| 1656 |
uint32_t base; |
| 1657 |
int op;
|
| 1658 |
int l1;
|
| 1659 |
|
| 1660 |
base = s->pc; |
| 1661 |
op = (insn >> 8) & 0xf; |
| 1662 |
offset = (int8_t)insn; |
| 1663 |
if (offset == 0) { |
| 1664 |
offset = cpu_ldsw_code(env, s->pc); |
| 1665 |
s->pc += 2;
|
| 1666 |
} else if (offset == -1) { |
| 1667 |
offset = read_im32(env, s); |
| 1668 |
} |
| 1669 |
if (op == 1) { |
| 1670 |
/* bsr */
|
| 1671 |
gen_push(s, tcg_const_i32(s->pc)); |
| 1672 |
} |
| 1673 |
gen_flush_cc_op(s); |
| 1674 |
if (op > 1) { |
| 1675 |
/* Bcc */
|
| 1676 |
l1 = gen_new_label(); |
| 1677 |
gen_jmpcc(s, ((insn >> 8) & 0xf) ^ 1, l1); |
| 1678 |
gen_jmp_tb(s, 1, base + offset);
|
| 1679 |
gen_set_label(l1); |
| 1680 |
gen_jmp_tb(s, 0, s->pc);
|
| 1681 |
} else {
|
| 1682 |
/* Unconditional branch. */
|
| 1683 |
gen_jmp_tb(s, 0, base + offset);
|
| 1684 |
} |
| 1685 |
} |
| 1686 |
|
| 1687 |
DISAS_INSN(moveq) |
| 1688 |
{
|
| 1689 |
uint32_t val; |
| 1690 |
|
| 1691 |
val = (int8_t)insn; |
| 1692 |
tcg_gen_movi_i32(DREG(insn, 9), val);
|
| 1693 |
gen_logic_cc(s, tcg_const_i32(val)); |
| 1694 |
} |
| 1695 |
|
| 1696 |
DISAS_INSN(mvzs) |
| 1697 |
{
|
| 1698 |
int opsize;
|
| 1699 |
TCGv src; |
| 1700 |
TCGv reg; |
| 1701 |
|
| 1702 |
if (insn & 0x40) |
| 1703 |
opsize = OS_WORD; |
| 1704 |
else
|
| 1705 |
opsize = OS_BYTE; |
| 1706 |
SRC_EA(env, src, opsize, (insn & 0x80) == 0, NULL); |
| 1707 |
reg = DREG(insn, 9);
|
| 1708 |
tcg_gen_mov_i32(reg, src); |
| 1709 |
gen_logic_cc(s, src); |
| 1710 |
} |
| 1711 |
|
| 1712 |
DISAS_INSN(or) |
| 1713 |
{
|
| 1714 |
TCGv reg; |
| 1715 |
TCGv dest; |
| 1716 |
TCGv src; |
| 1717 |
TCGv addr; |
| 1718 |
|
| 1719 |
reg = DREG(insn, 9);
|
| 1720 |
dest = tcg_temp_new(); |
| 1721 |
if (insn & 0x100) { |
| 1722 |
SRC_EA(env, src, OS_LONG, 0, &addr);
|
| 1723 |
tcg_gen_or_i32(dest, src, reg); |
| 1724 |
DEST_EA(env, insn, OS_LONG, dest, &addr); |
| 1725 |
} else {
|
| 1726 |
SRC_EA(env, src, OS_LONG, 0, NULL); |
| 1727 |
tcg_gen_or_i32(dest, src, reg); |
| 1728 |
tcg_gen_mov_i32(reg, dest); |
| 1729 |
} |
| 1730 |
gen_logic_cc(s, dest); |
| 1731 |
} |
| 1732 |
|
| 1733 |
DISAS_INSN(suba) |
| 1734 |
{
|
| 1735 |
TCGv src; |
| 1736 |
TCGv reg; |
| 1737 |
|
| 1738 |
SRC_EA(env, src, OS_LONG, 0, NULL); |
| 1739 |
reg = AREG(insn, 9);
|
| 1740 |
tcg_gen_sub_i32(reg, reg, src); |
| 1741 |
} |
| 1742 |
|
| 1743 |
DISAS_INSN(subx) |
| 1744 |
{
|
| 1745 |
TCGv reg; |
| 1746 |
TCGv src; |
| 1747 |
|
| 1748 |
gen_flush_flags(s); |
| 1749 |
reg = DREG(insn, 9);
|
| 1750 |
src = DREG(insn, 0);
|
| 1751 |
gen_helper_subx_cc(reg, cpu_env, reg, src); |
| 1752 |
} |
| 1753 |
|
| 1754 |
DISAS_INSN(mov3q) |
| 1755 |
{
|
| 1756 |
TCGv src; |
| 1757 |
int val;
|
| 1758 |
|
| 1759 |
val = (insn >> 9) & 7; |
| 1760 |
if (val == 0) |
| 1761 |
val = -1;
|
| 1762 |
src = tcg_const_i32(val); |
| 1763 |
gen_logic_cc(s, src); |
| 1764 |
DEST_EA(env, insn, OS_LONG, src, NULL);
|
| 1765 |
} |
| 1766 |
|
| 1767 |
DISAS_INSN(cmp) |
| 1768 |
{
|
| 1769 |
int op;
|
| 1770 |
TCGv src; |
| 1771 |
TCGv reg; |
| 1772 |
TCGv dest; |
| 1773 |
int opsize;
|
| 1774 |
|
| 1775 |
op = (insn >> 6) & 3; |
| 1776 |
switch (op) {
|
| 1777 |
case 0: /* cmp.b */ |
| 1778 |
opsize = OS_BYTE; |
| 1779 |
s->cc_op = CC_OP_CMPB; |
| 1780 |
break;
|
| 1781 |
case 1: /* cmp.w */ |
| 1782 |
opsize = OS_WORD; |
| 1783 |
s->cc_op = CC_OP_CMPW; |
| 1784 |
break;
|
| 1785 |
case 2: /* cmp.l */ |
| 1786 |
opsize = OS_LONG; |
| 1787 |
s->cc_op = CC_OP_SUB; |
| 1788 |
break;
|
| 1789 |
default:
|
| 1790 |
abort(); |
| 1791 |
} |
| 1792 |
SRC_EA(env, src, opsize, 1, NULL); |
| 1793 |
reg = DREG(insn, 9);
|
| 1794 |
dest = tcg_temp_new(); |
| 1795 |
tcg_gen_sub_i32(dest, reg, src); |
| 1796 |
gen_update_cc_add(dest, src); |
| 1797 |
} |
| 1798 |
|
| 1799 |
DISAS_INSN(cmpa) |
| 1800 |
{
|
| 1801 |
int opsize;
|
| 1802 |
TCGv src; |
| 1803 |
TCGv reg; |
| 1804 |
TCGv dest; |
| 1805 |
|
| 1806 |
if (insn & 0x100) { |
| 1807 |
opsize = OS_LONG; |
| 1808 |
} else {
|
| 1809 |
opsize = OS_WORD; |
| 1810 |
} |
| 1811 |
SRC_EA(env, src, opsize, 1, NULL); |
| 1812 |
reg = AREG(insn, 9);
|
| 1813 |
dest = tcg_temp_new(); |
| 1814 |
tcg_gen_sub_i32(dest, reg, src); |
| 1815 |
gen_update_cc_add(dest, src); |
| 1816 |
s->cc_op = CC_OP_SUB; |
| 1817 |
} |
| 1818 |
|
| 1819 |
DISAS_INSN(eor) |
| 1820 |
{
|
| 1821 |
TCGv src; |
| 1822 |
TCGv reg; |
| 1823 |
TCGv dest; |
| 1824 |
TCGv addr; |
| 1825 |
|
| 1826 |
SRC_EA(env, src, OS_LONG, 0, &addr);
|
| 1827 |
reg = DREG(insn, 9);
|
| 1828 |
dest = tcg_temp_new(); |
| 1829 |
tcg_gen_xor_i32(dest, src, reg); |
| 1830 |
gen_logic_cc(s, dest); |
| 1831 |
DEST_EA(env, insn, OS_LONG, dest, &addr); |
| 1832 |
} |
| 1833 |
|
| 1834 |
DISAS_INSN(and) |
| 1835 |
{
|
| 1836 |
TCGv src; |
| 1837 |
TCGv reg; |
| 1838 |
TCGv dest; |
| 1839 |
TCGv addr; |
| 1840 |
|
| 1841 |
reg = DREG(insn, 9);
|
| 1842 |
dest = tcg_temp_new(); |
| 1843 |
if (insn & 0x100) { |
| 1844 |
SRC_EA(env, src, OS_LONG, 0, &addr);
|
| 1845 |
tcg_gen_and_i32(dest, src, reg); |
| 1846 |
DEST_EA(env, insn, OS_LONG, dest, &addr); |
| 1847 |
} else {
|
| 1848 |
SRC_EA(env, src, OS_LONG, 0, NULL); |
| 1849 |
tcg_gen_and_i32(dest, src, reg); |
| 1850 |
tcg_gen_mov_i32(reg, dest); |
| 1851 |
} |
| 1852 |
gen_logic_cc(s, dest); |
| 1853 |
} |
| 1854 |
|
| 1855 |
DISAS_INSN(adda) |
| 1856 |
{
|
| 1857 |
TCGv src; |
| 1858 |
TCGv reg; |
| 1859 |
|
| 1860 |
SRC_EA(env, src, OS_LONG, 0, NULL); |
| 1861 |
reg = AREG(insn, 9);
|
| 1862 |
tcg_gen_add_i32(reg, reg, src); |
| 1863 |
} |
| 1864 |
|
| 1865 |
DISAS_INSN(addx) |
| 1866 |
{
|
| 1867 |
TCGv reg; |
| 1868 |
TCGv src; |
| 1869 |
|
| 1870 |
gen_flush_flags(s); |
| 1871 |
reg = DREG(insn, 9);
|
| 1872 |
src = DREG(insn, 0);
|
| 1873 |
gen_helper_addx_cc(reg, cpu_env, reg, src); |
| 1874 |
s->cc_op = CC_OP_FLAGS; |
| 1875 |
} |
| 1876 |
|
| 1877 |
/* TODO: This could be implemented without helper functions. */
|
| 1878 |
DISAS_INSN(shift_im) |
| 1879 |
{
|
| 1880 |
TCGv reg; |
| 1881 |
int tmp;
|
| 1882 |
TCGv shift; |
| 1883 |
|
| 1884 |
reg = DREG(insn, 0);
|
| 1885 |
tmp = (insn >> 9) & 7; |
| 1886 |
if (tmp == 0) |
| 1887 |
tmp = 8;
|
| 1888 |
shift = tcg_const_i32(tmp); |
| 1889 |
/* No need to flush flags becuse we know we will set C flag. */
|
| 1890 |
if (insn & 0x100) { |
| 1891 |
gen_helper_shl_cc(reg, cpu_env, reg, shift); |
| 1892 |
} else {
|
| 1893 |
if (insn & 8) { |
| 1894 |
gen_helper_shr_cc(reg, cpu_env, reg, shift); |
| 1895 |
} else {
|
| 1896 |
gen_helper_sar_cc(reg, cpu_env, reg, shift); |
| 1897 |
} |
| 1898 |
} |
| 1899 |
s->cc_op = CC_OP_SHIFT; |
| 1900 |
} |
| 1901 |
|
| 1902 |
DISAS_INSN(shift_reg) |
| 1903 |
{
|
| 1904 |
TCGv reg; |
| 1905 |
TCGv shift; |
| 1906 |
|
| 1907 |
reg = DREG(insn, 0);
|
| 1908 |
shift = DREG(insn, 9);
|
| 1909 |
/* Shift by zero leaves C flag unmodified. */
|
| 1910 |
gen_flush_flags(s); |
| 1911 |
if (insn & 0x100) { |
| 1912 |
gen_helper_shl_cc(reg, cpu_env, reg, shift); |
| 1913 |
} else {
|
| 1914 |
if (insn & 8) { |
| 1915 |
gen_helper_shr_cc(reg, cpu_env, reg, shift); |
| 1916 |
} else {
|
| 1917 |
gen_helper_sar_cc(reg, cpu_env, reg, shift); |
| 1918 |
} |
| 1919 |
} |
| 1920 |
s->cc_op = CC_OP_SHIFT; |
| 1921 |
} |
| 1922 |
|
| 1923 |
DISAS_INSN(ff1) |
| 1924 |
{
|
| 1925 |
TCGv reg; |
| 1926 |
reg = DREG(insn, 0);
|
| 1927 |
gen_logic_cc(s, reg); |
| 1928 |
gen_helper_ff1(reg, reg); |
| 1929 |
} |
| 1930 |
|
| 1931 |
static TCGv gen_get_sr(DisasContext *s)
|
| 1932 |
{
|
| 1933 |
TCGv ccr; |
| 1934 |
TCGv sr; |
| 1935 |
|
| 1936 |
ccr = gen_get_ccr(s); |
| 1937 |
sr = tcg_temp_new(); |
| 1938 |
tcg_gen_andi_i32(sr, QREG_SR, 0xffe0);
|
| 1939 |
tcg_gen_or_i32(sr, sr, ccr); |
| 1940 |
return sr;
|
| 1941 |
} |
| 1942 |
|
| 1943 |
DISAS_INSN(strldsr) |
| 1944 |
{
|
| 1945 |
uint16_t ext; |
| 1946 |
uint32_t addr; |
| 1947 |
|
| 1948 |
addr = s->pc - 2;
|
| 1949 |
ext = cpu_lduw_code(env, s->pc); |
| 1950 |
s->pc += 2;
|
| 1951 |
if (ext != 0x46FC) { |
| 1952 |
gen_exception(s, addr, EXCP_UNSUPPORTED); |
| 1953 |
return;
|
| 1954 |
} |
| 1955 |
ext = cpu_lduw_code(env, s->pc); |
| 1956 |
s->pc += 2;
|
| 1957 |
if (IS_USER(s) || (ext & SR_S) == 0) { |
| 1958 |
gen_exception(s, addr, EXCP_PRIVILEGE); |
| 1959 |
return;
|
| 1960 |
} |
| 1961 |
gen_push(s, gen_get_sr(s)); |
| 1962 |
gen_set_sr_im(s, ext, 0);
|
| 1963 |
} |
| 1964 |
|
| 1965 |
DISAS_INSN(move_from_sr) |
| 1966 |
{
|
| 1967 |
TCGv reg; |
| 1968 |
TCGv sr; |
| 1969 |
|
| 1970 |
if (IS_USER(s)) {
|
| 1971 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
| 1972 |
return;
|
| 1973 |
} |
| 1974 |
sr = gen_get_sr(s); |
| 1975 |
reg = DREG(insn, 0);
|
| 1976 |
gen_partset_reg(OS_WORD, reg, sr); |
| 1977 |
} |
| 1978 |
|
| 1979 |
DISAS_INSN(move_to_sr) |
| 1980 |
{
|
| 1981 |
if (IS_USER(s)) {
|
| 1982 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
| 1983 |
return;
|
| 1984 |
} |
| 1985 |
gen_set_sr(env, s, insn, 0);
|
| 1986 |
gen_lookup_tb(s); |
| 1987 |
} |
| 1988 |
|
| 1989 |
DISAS_INSN(move_from_usp) |
| 1990 |
{
|
| 1991 |
if (IS_USER(s)) {
|
| 1992 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
| 1993 |
return;
|
| 1994 |
} |
| 1995 |
/* TODO: Implement USP. */
|
| 1996 |
gen_exception(s, s->pc - 2, EXCP_ILLEGAL);
|
| 1997 |
} |
| 1998 |
|
| 1999 |
DISAS_INSN(move_to_usp) |
| 2000 |
{
|
| 2001 |
if (IS_USER(s)) {
|
| 2002 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
| 2003 |
return;
|
| 2004 |
} |
| 2005 |
/* TODO: Implement USP. */
|
| 2006 |
gen_exception(s, s->pc - 2, EXCP_ILLEGAL);
|
| 2007 |
} |
| 2008 |
|
| 2009 |
DISAS_INSN(halt) |
| 2010 |
{
|
| 2011 |
gen_exception(s, s->pc, EXCP_HALT_INSN); |
| 2012 |
} |
| 2013 |
|
| 2014 |
DISAS_INSN(stop) |
| 2015 |
{
|
| 2016 |
uint16_t ext; |
| 2017 |
|
| 2018 |
if (IS_USER(s)) {
|
| 2019 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
| 2020 |
return;
|
| 2021 |
} |
| 2022 |
|
| 2023 |
ext = cpu_lduw_code(env, s->pc); |
| 2024 |
s->pc += 2;
|
| 2025 |
|
| 2026 |
gen_set_sr_im(s, ext, 0);
|
| 2027 |
tcg_gen_movi_i32(QREG_HALTED, 1);
|
| 2028 |
gen_exception(s, s->pc, EXCP_HLT); |
| 2029 |
} |
| 2030 |
|
| 2031 |
DISAS_INSN(rte) |
| 2032 |
{
|
| 2033 |
if (IS_USER(s)) {
|
| 2034 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
| 2035 |
return;
|
| 2036 |
} |
| 2037 |
gen_exception(s, s->pc - 2, EXCP_RTE);
|
| 2038 |
} |
| 2039 |
|
| 2040 |
DISAS_INSN(movec) |
| 2041 |
{
|
| 2042 |
uint16_t ext; |
| 2043 |
TCGv reg; |
| 2044 |
|
| 2045 |
if (IS_USER(s)) {
|
| 2046 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
| 2047 |
return;
|
| 2048 |
} |
| 2049 |
|
| 2050 |
ext = cpu_lduw_code(env, s->pc); |
| 2051 |
s->pc += 2;
|
| 2052 |
|
| 2053 |
if (ext & 0x8000) { |
| 2054 |
reg = AREG(ext, 12);
|
| 2055 |
} else {
|
| 2056 |
reg = DREG(ext, 12);
|
| 2057 |
} |
| 2058 |
gen_helper_movec(cpu_env, tcg_const_i32(ext & 0xfff), reg);
|
| 2059 |
gen_lookup_tb(s); |
| 2060 |
} |
| 2061 |
|
| 2062 |
DISAS_INSN(intouch) |
| 2063 |
{
|
| 2064 |
if (IS_USER(s)) {
|
| 2065 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
| 2066 |
return;
|
| 2067 |
} |
| 2068 |
/* ICache fetch. Implement as no-op. */
|
| 2069 |
} |
| 2070 |
|
| 2071 |
DISAS_INSN(cpushl) |
| 2072 |
{
|
| 2073 |
if (IS_USER(s)) {
|
| 2074 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
| 2075 |
return;
|
| 2076 |
} |
| 2077 |
/* Cache push/invalidate. Implement as no-op. */
|
| 2078 |
} |
| 2079 |
|
| 2080 |
DISAS_INSN(wddata) |
| 2081 |
{
|
| 2082 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
| 2083 |
} |
| 2084 |
|
| 2085 |
DISAS_INSN(wdebug) |
| 2086 |
{
|
| 2087 |
if (IS_USER(s)) {
|
| 2088 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
| 2089 |
return;
|
| 2090 |
} |
| 2091 |
/* TODO: Implement wdebug. */
|
| 2092 |
qemu_assert(0, "WDEBUG not implemented"); |
| 2093 |
} |
| 2094 |
|
| 2095 |
DISAS_INSN(trap) |
| 2096 |
{
|
| 2097 |
gen_exception(s, s->pc - 2, EXCP_TRAP0 + (insn & 0xf)); |
| 2098 |
} |
| 2099 |
|
| 2100 |
/* ??? FP exceptions are not implemented. Most exceptions are deferred until
|
| 2101 |
immediately before the next FP instruction is executed. */
|
| 2102 |
DISAS_INSN(fpu) |
| 2103 |
{
|
| 2104 |
uint16_t ext; |
| 2105 |
int32_t offset; |
| 2106 |
int opmode;
|
| 2107 |
TCGv_i64 src; |
| 2108 |
TCGv_i64 dest; |
| 2109 |
TCGv_i64 res; |
| 2110 |
TCGv tmp32; |
| 2111 |
int round;
|
| 2112 |
int set_dest;
|
| 2113 |
int opsize;
|
| 2114 |
|
| 2115 |
ext = cpu_lduw_code(env, s->pc); |
| 2116 |
s->pc += 2;
|
| 2117 |
opmode = ext & 0x7f;
|
| 2118 |
switch ((ext >> 13) & 7) { |
| 2119 |
case 0: case 2: |
| 2120 |
break;
|
| 2121 |
case 1: |
| 2122 |
goto undef;
|
| 2123 |
case 3: /* fmove out */ |
| 2124 |
src = FREG(ext, 7);
|
| 2125 |
tmp32 = tcg_temp_new_i32(); |
| 2126 |
/* fmove */
|
| 2127 |
/* ??? TODO: Proper behavior on overflow. */
|
| 2128 |
switch ((ext >> 10) & 7) { |
| 2129 |
case 0: |
| 2130 |
opsize = OS_LONG; |
| 2131 |
gen_helper_f64_to_i32(tmp32, cpu_env, src); |
| 2132 |
break;
|
| 2133 |
case 1: |
| 2134 |
opsize = OS_SINGLE; |
| 2135 |
gen_helper_f64_to_f32(tmp32, cpu_env, src); |
| 2136 |
break;
|
| 2137 |
case 4: |
| 2138 |
opsize = OS_WORD; |
| 2139 |
gen_helper_f64_to_i32(tmp32, cpu_env, src); |
| 2140 |
break;
|
| 2141 |
case 5: /* OS_DOUBLE */ |
| 2142 |
tcg_gen_mov_i32(tmp32, AREG(insn, 0));
|
| 2143 |
switch ((insn >> 3) & 7) { |
| 2144 |
case 2: |
| 2145 |
case 3: |
| 2146 |
break;
|
| 2147 |
case 4: |
| 2148 |
tcg_gen_addi_i32(tmp32, tmp32, -8);
|
| 2149 |
break;
|
| 2150 |
case 5: |
| 2151 |
offset = cpu_ldsw_code(env, s->pc); |
| 2152 |
s->pc += 2;
|
| 2153 |
tcg_gen_addi_i32(tmp32, tmp32, offset); |
| 2154 |
break;
|
| 2155 |
default:
|
| 2156 |
goto undef;
|
| 2157 |
} |
| 2158 |
gen_store64(s, tmp32, src); |
| 2159 |
switch ((insn >> 3) & 7) { |
| 2160 |
case 3: |
| 2161 |
tcg_gen_addi_i32(tmp32, tmp32, 8);
|
| 2162 |
tcg_gen_mov_i32(AREG(insn, 0), tmp32);
|
| 2163 |
break;
|
| 2164 |
case 4: |
| 2165 |
tcg_gen_mov_i32(AREG(insn, 0), tmp32);
|
| 2166 |
break;
|
| 2167 |
} |
| 2168 |
tcg_temp_free_i32(tmp32); |
| 2169 |
return;
|
| 2170 |
case 6: |
| 2171 |
opsize = OS_BYTE; |
| 2172 |
gen_helper_f64_to_i32(tmp32, cpu_env, src); |
| 2173 |
break;
|
| 2174 |
default:
|
| 2175 |
goto undef;
|
| 2176 |
} |
| 2177 |
DEST_EA(env, insn, opsize, tmp32, NULL);
|
| 2178 |
tcg_temp_free_i32(tmp32); |
| 2179 |
return;
|
| 2180 |
case 4: /* fmove to control register. */ |
| 2181 |
switch ((ext >> 10) & 7) { |
| 2182 |
case 4: /* FPCR */ |
| 2183 |
/* Not implemented. Ignore writes. */
|
| 2184 |
break;
|
| 2185 |
case 1: /* FPIAR */ |
| 2186 |
case 2: /* FPSR */ |
| 2187 |
default:
|
| 2188 |
cpu_abort(NULL, "Unimplemented: fmove to control %d", |
| 2189 |
(ext >> 10) & 7); |
| 2190 |
} |
| 2191 |
break;
|
| 2192 |
case 5: /* fmove from control register. */ |
| 2193 |
switch ((ext >> 10) & 7) { |
| 2194 |
case 4: /* FPCR */ |
| 2195 |
/* Not implemented. Always return zero. */
|
| 2196 |
tmp32 = tcg_const_i32(0);
|
| 2197 |
break;
|
| 2198 |
case 1: /* FPIAR */ |
| 2199 |
case 2: /* FPSR */ |
| 2200 |
default:
|
| 2201 |
cpu_abort(NULL, "Unimplemented: fmove from control %d", |
| 2202 |
(ext >> 10) & 7); |
| 2203 |
goto undef;
|
| 2204 |
} |
| 2205 |
DEST_EA(env, insn, OS_LONG, tmp32, NULL);
|
| 2206 |
break;
|
| 2207 |
case 6: /* fmovem */ |
| 2208 |
case 7: |
| 2209 |
{
|
| 2210 |
TCGv addr; |
| 2211 |
uint16_t mask; |
| 2212 |
int i;
|
| 2213 |
if ((ext & 0x1f00) != 0x1000 || (ext & 0xff) == 0) |
| 2214 |
goto undef;
|
| 2215 |
tmp32 = gen_lea(env, s, insn, OS_LONG); |
| 2216 |
if (IS_NULL_QREG(tmp32)) {
|
| 2217 |
gen_addr_fault(s); |
| 2218 |
return;
|
| 2219 |
} |
| 2220 |
addr = tcg_temp_new_i32(); |
| 2221 |
tcg_gen_mov_i32(addr, tmp32); |
| 2222 |
mask = 0x80;
|
| 2223 |
for (i = 0; i < 8; i++) { |
| 2224 |
if (ext & mask) {
|
| 2225 |
s->is_mem = 1;
|
| 2226 |
dest = FREG(i, 0);
|
| 2227 |
if (ext & (1 << 13)) { |
| 2228 |
/* store */
|
| 2229 |
tcg_gen_qemu_stf64(dest, addr, IS_USER(s)); |
| 2230 |
} else {
|
| 2231 |
/* load */
|
| 2232 |
tcg_gen_qemu_ldf64(dest, addr, IS_USER(s)); |
| 2233 |
} |
| 2234 |
if (ext & (mask - 1)) |
| 2235 |
tcg_gen_addi_i32(addr, addr, 8);
|
| 2236 |
} |
| 2237 |
mask >>= 1;
|
| 2238 |
} |
| 2239 |
tcg_temp_free_i32(addr); |
| 2240 |
} |
| 2241 |
return;
|
| 2242 |
} |
| 2243 |
if (ext & (1 << 14)) { |
| 2244 |
/* Source effective address. */
|
| 2245 |
switch ((ext >> 10) & 7) { |
| 2246 |
case 0: opsize = OS_LONG; break; |
| 2247 |
case 1: opsize = OS_SINGLE; break; |
| 2248 |
case 4: opsize = OS_WORD; break; |
| 2249 |
case 5: opsize = OS_DOUBLE; break; |
| 2250 |
case 6: opsize = OS_BYTE; break; |
| 2251 |
default:
|
| 2252 |
goto undef;
|
| 2253 |
} |
| 2254 |
if (opsize == OS_DOUBLE) {
|
| 2255 |
tmp32 = tcg_temp_new_i32(); |
| 2256 |
tcg_gen_mov_i32(tmp32, AREG(insn, 0));
|
| 2257 |
switch ((insn >> 3) & 7) { |
| 2258 |
case 2: |
| 2259 |
case 3: |
| 2260 |
break;
|
| 2261 |
case 4: |
| 2262 |
tcg_gen_addi_i32(tmp32, tmp32, -8);
|
| 2263 |
break;
|
| 2264 |
case 5: |
| 2265 |
offset = cpu_ldsw_code(env, s->pc); |
| 2266 |
s->pc += 2;
|
| 2267 |
tcg_gen_addi_i32(tmp32, tmp32, offset); |
| 2268 |
break;
|
| 2269 |
case 7: |
| 2270 |
offset = cpu_ldsw_code(env, s->pc); |
| 2271 |
offset += s->pc - 2;
|
| 2272 |
s->pc += 2;
|
| 2273 |
tcg_gen_addi_i32(tmp32, tmp32, offset); |
| 2274 |
break;
|
| 2275 |
default:
|
| 2276 |
goto undef;
|
| 2277 |
} |
| 2278 |
src = gen_load64(s, tmp32); |
| 2279 |
switch ((insn >> 3) & 7) { |
| 2280 |
case 3: |
| 2281 |
tcg_gen_addi_i32(tmp32, tmp32, 8);
|
| 2282 |
tcg_gen_mov_i32(AREG(insn, 0), tmp32);
|
| 2283 |
break;
|
| 2284 |
case 4: |
| 2285 |
tcg_gen_mov_i32(AREG(insn, 0), tmp32);
|
| 2286 |
break;
|
| 2287 |
} |
| 2288 |
tcg_temp_free_i32(tmp32); |
| 2289 |
} else {
|
| 2290 |
SRC_EA(env, tmp32, opsize, 1, NULL); |
| 2291 |
src = tcg_temp_new_i64(); |
| 2292 |
switch (opsize) {
|
| 2293 |
case OS_LONG:
|
| 2294 |
case OS_WORD:
|
| 2295 |
case OS_BYTE:
|
| 2296 |
gen_helper_i32_to_f64(src, cpu_env, tmp32); |
| 2297 |
break;
|
| 2298 |
case OS_SINGLE:
|
| 2299 |
gen_helper_f32_to_f64(src, cpu_env, tmp32); |
| 2300 |
break;
|
| 2301 |
} |
| 2302 |
} |
| 2303 |
} else {
|
| 2304 |
/* Source register. */
|
| 2305 |
src = FREG(ext, 10);
|
| 2306 |
} |
| 2307 |
dest = FREG(ext, 7);
|
| 2308 |
res = tcg_temp_new_i64(); |
| 2309 |
if (opmode != 0x3a) |
| 2310 |
tcg_gen_mov_f64(res, dest); |
| 2311 |
round = 1;
|
| 2312 |
set_dest = 1;
|
| 2313 |
switch (opmode) {
|
| 2314 |
case 0: case 0x40: case 0x44: /* fmove */ |
| 2315 |
tcg_gen_mov_f64(res, src); |
| 2316 |
break;
|
| 2317 |
case 1: /* fint */ |
| 2318 |
gen_helper_iround_f64(res, cpu_env, src); |
| 2319 |
round = 0;
|
| 2320 |
break;
|
| 2321 |
case 3: /* fintrz */ |
| 2322 |
gen_helper_itrunc_f64(res, cpu_env, src); |
| 2323 |
round = 0;
|
| 2324 |
break;
|
| 2325 |
case 4: case 0x41: case 0x45: /* fsqrt */ |
| 2326 |
gen_helper_sqrt_f64(res, cpu_env, src); |
| 2327 |
break;
|
| 2328 |
case 0x18: case 0x58: case 0x5c: /* fabs */ |
| 2329 |
gen_helper_abs_f64(res, src); |
| 2330 |
break;
|
| 2331 |
case 0x1a: case 0x5a: case 0x5e: /* fneg */ |
| 2332 |
gen_helper_chs_f64(res, src); |
| 2333 |
break;
|
| 2334 |
case 0x20: case 0x60: case 0x64: /* fdiv */ |
| 2335 |
gen_helper_div_f64(res, cpu_env, res, src); |
| 2336 |
break;
|
| 2337 |
case 0x22: case 0x62: case 0x66: /* fadd */ |
| 2338 |
gen_helper_add_f64(res, cpu_env, res, src); |
| 2339 |
break;
|
| 2340 |
case 0x23: case 0x63: case 0x67: /* fmul */ |
| 2341 |
gen_helper_mul_f64(res, cpu_env, res, src); |
| 2342 |
break;
|
| 2343 |
case 0x28: case 0x68: case 0x6c: /* fsub */ |
| 2344 |
gen_helper_sub_f64(res, cpu_env, res, src); |
| 2345 |
break;
|
| 2346 |
case 0x38: /* fcmp */ |
| 2347 |
gen_helper_sub_cmp_f64(res, cpu_env, res, src); |
| 2348 |
set_dest = 0;
|
| 2349 |
round = 0;
|
| 2350 |
break;
|
| 2351 |
case 0x3a: /* ftst */ |
| 2352 |
tcg_gen_mov_f64(res, src); |
| 2353 |
set_dest = 0;
|
| 2354 |
round = 0;
|
| 2355 |
break;
|
| 2356 |
default:
|
| 2357 |
goto undef;
|
| 2358 |
} |
| 2359 |
if (ext & (1 << 14)) { |
| 2360 |
tcg_temp_free_i64(src); |
| 2361 |
} |
| 2362 |
if (round) {
|
| 2363 |
if (opmode & 0x40) { |
| 2364 |
if ((opmode & 0x4) != 0) |
| 2365 |
round = 0;
|
| 2366 |
} else if ((s->fpcr & M68K_FPCR_PREC) == 0) { |
| 2367 |
round = 0;
|
| 2368 |
} |
| 2369 |
} |
| 2370 |
if (round) {
|
| 2371 |
TCGv tmp = tcg_temp_new_i32(); |
| 2372 |
gen_helper_f64_to_f32(tmp, cpu_env, res); |
| 2373 |
gen_helper_f32_to_f64(res, cpu_env, tmp); |
| 2374 |
tcg_temp_free_i32(tmp); |
| 2375 |
} |
| 2376 |
tcg_gen_mov_f64(QREG_FP_RESULT, res); |
| 2377 |
if (set_dest) {
|
| 2378 |
tcg_gen_mov_f64(dest, res); |
| 2379 |
} |
| 2380 |
tcg_temp_free_i64(res); |
| 2381 |
return;
|
| 2382 |
undef:
|
| 2383 |
/* FIXME: Is this right for offset addressing modes? */
|
| 2384 |
s->pc -= 2;
|
| 2385 |
disas_undef_fpu(env, s, insn); |
| 2386 |
} |
| 2387 |
|
| 2388 |
DISAS_INSN(fbcc) |
| 2389 |
{
|
| 2390 |
uint32_t offset; |
| 2391 |
uint32_t addr; |
| 2392 |
TCGv flag; |
| 2393 |
int l1;
|
| 2394 |
|
| 2395 |
addr = s->pc; |
| 2396 |
offset = cpu_ldsw_code(env, s->pc); |
| 2397 |
s->pc += 2;
|
| 2398 |
if (insn & (1 << 6)) { |
| 2399 |
offset = (offset << 16) | cpu_lduw_code(env, s->pc);
|
| 2400 |
s->pc += 2;
|
| 2401 |
} |
| 2402 |
|
| 2403 |
l1 = gen_new_label(); |
| 2404 |
/* TODO: Raise BSUN exception. */
|
| 2405 |
flag = tcg_temp_new(); |
| 2406 |
gen_helper_compare_f64(flag, cpu_env, QREG_FP_RESULT); |
| 2407 |
/* Jump to l1 if condition is true. */
|
| 2408 |
switch (insn & 0xf) { |
| 2409 |
case 0: /* f */ |
| 2410 |
break;
|
| 2411 |
case 1: /* eq (=0) */ |
| 2412 |
tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(0), l1);
|
| 2413 |
break;
|
| 2414 |
case 2: /* ogt (=1) */ |
| 2415 |
tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(1), l1);
|
| 2416 |
break;
|
| 2417 |
case 3: /* oge (=0 or =1) */ |
| 2418 |
tcg_gen_brcond_i32(TCG_COND_LEU, flag, tcg_const_i32(1), l1);
|
| 2419 |
break;
|
| 2420 |
case 4: /* olt (=-1) */ |
| 2421 |
tcg_gen_brcond_i32(TCG_COND_LT, flag, tcg_const_i32(0), l1);
|
| 2422 |
break;
|
| 2423 |
case 5: /* ole (=-1 or =0) */ |
| 2424 |
tcg_gen_brcond_i32(TCG_COND_LE, flag, tcg_const_i32(0), l1);
|
| 2425 |
break;
|
| 2426 |
case 6: /* ogl (=-1 or =1) */ |
| 2427 |
tcg_gen_andi_i32(flag, flag, 1);
|
| 2428 |
tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(0), l1);
|
| 2429 |
break;
|
| 2430 |
case 7: /* or (=2) */ |
| 2431 |
tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(2), l1);
|
| 2432 |
break;
|
| 2433 |
case 8: /* un (<2) */ |
| 2434 |
tcg_gen_brcond_i32(TCG_COND_LT, flag, tcg_const_i32(2), l1);
|
| 2435 |
break;
|
| 2436 |
case 9: /* ueq (=0 or =2) */ |
| 2437 |
tcg_gen_andi_i32(flag, flag, 1);
|
| 2438 |
tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(0), l1);
|
| 2439 |
break;
|
| 2440 |
case 10: /* ugt (>0) */ |
| 2441 |
tcg_gen_brcond_i32(TCG_COND_GT, flag, tcg_const_i32(0), l1);
|
| 2442 |
break;
|
| 2443 |
case 11: /* uge (>=0) */ |
| 2444 |
tcg_gen_brcond_i32(TCG_COND_GE, flag, tcg_const_i32(0), l1);
|
| 2445 |
break;
|
| 2446 |
case 12: /* ult (=-1 or =2) */ |
| 2447 |
tcg_gen_brcond_i32(TCG_COND_GEU, flag, tcg_const_i32(2), l1);
|
| 2448 |
break;
|
| 2449 |
case 13: /* ule (!=1) */ |
| 2450 |
tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(1), l1);
|
| 2451 |
break;
|
| 2452 |
case 14: /* ne (!=0) */ |
| 2453 |
tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(0), l1);
|
| 2454 |
break;
|
| 2455 |
case 15: /* t */ |
| 2456 |
tcg_gen_br(l1); |
| 2457 |
break;
|
| 2458 |
} |
| 2459 |
gen_jmp_tb(s, 0, s->pc);
|
| 2460 |
gen_set_label(l1); |
| 2461 |
gen_jmp_tb(s, 1, addr + offset);
|
| 2462 |
} |
| 2463 |
|
| 2464 |
DISAS_INSN(frestore) |
| 2465 |
{
|
| 2466 |
/* TODO: Implement frestore. */
|
| 2467 |
qemu_assert(0, "FRESTORE not implemented"); |
| 2468 |
} |
| 2469 |
|
| 2470 |
DISAS_INSN(fsave) |
| 2471 |
{
|
| 2472 |
/* TODO: Implement fsave. */
|
| 2473 |
qemu_assert(0, "FSAVE not implemented"); |
| 2474 |
} |
| 2475 |
|
| 2476 |
static inline TCGv gen_mac_extract_word(DisasContext *s, TCGv val, int upper) |
| 2477 |
{
|
| 2478 |
TCGv tmp = tcg_temp_new(); |
| 2479 |
if (s->env->macsr & MACSR_FI) {
|
| 2480 |
if (upper)
|
| 2481 |
tcg_gen_andi_i32(tmp, val, 0xffff0000);
|
| 2482 |
else
|
| 2483 |
tcg_gen_shli_i32(tmp, val, 16);
|
| 2484 |
} else if (s->env->macsr & MACSR_SU) { |
| 2485 |
if (upper)
|
| 2486 |
tcg_gen_sari_i32(tmp, val, 16);
|
| 2487 |
else
|
| 2488 |
tcg_gen_ext16s_i32(tmp, val); |
| 2489 |
} else {
|
| 2490 |
if (upper)
|
| 2491 |
tcg_gen_shri_i32(tmp, val, 16);
|
| 2492 |
else
|
| 2493 |
tcg_gen_ext16u_i32(tmp, val); |
| 2494 |
} |
| 2495 |
return tmp;
|
| 2496 |
} |
| 2497 |
|
| 2498 |
static void gen_mac_clear_flags(void) |
| 2499 |
{
|
| 2500 |
tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, |
| 2501 |
~(MACSR_V | MACSR_Z | MACSR_N | MACSR_EV)); |
| 2502 |
} |
| 2503 |
|
| 2504 |
DISAS_INSN(mac) |
| 2505 |
{
|
| 2506 |
TCGv rx; |
| 2507 |
TCGv ry; |
| 2508 |
uint16_t ext; |
| 2509 |
int acc;
|
| 2510 |
TCGv tmp; |
| 2511 |
TCGv addr; |
| 2512 |
TCGv loadval; |
| 2513 |
int dual;
|
| 2514 |
TCGv saved_flags; |
| 2515 |
|
| 2516 |
if (!s->done_mac) {
|
| 2517 |
s->mactmp = tcg_temp_new_i64(); |
| 2518 |
s->done_mac = 1;
|
| 2519 |
} |
| 2520 |
|
| 2521 |
ext = cpu_lduw_code(env, s->pc); |
| 2522 |
s->pc += 2;
|
| 2523 |
|
| 2524 |
acc = ((insn >> 7) & 1) | ((ext >> 3) & 2); |
| 2525 |
dual = ((insn & 0x30) != 0 && (ext & 3) != 0); |
| 2526 |
if (dual && !m68k_feature(s->env, M68K_FEATURE_CF_EMAC_B)) {
|
| 2527 |
disas_undef(env, s, insn); |
| 2528 |
return;
|
| 2529 |
} |
| 2530 |
if (insn & 0x30) { |
| 2531 |
/* MAC with load. */
|
| 2532 |
tmp = gen_lea(env, s, insn, OS_LONG); |
| 2533 |
addr = tcg_temp_new(); |
| 2534 |
tcg_gen_and_i32(addr, tmp, QREG_MAC_MASK); |
| 2535 |
/* Load the value now to ensure correct exception behavior.
|
| 2536 |
Perform writeback after reading the MAC inputs. */
|
| 2537 |
loadval = gen_load(s, OS_LONG, addr, 0);
|
| 2538 |
|
| 2539 |
acc ^= 1;
|
| 2540 |
rx = (ext & 0x8000) ? AREG(ext, 12) : DREG(insn, 12); |
| 2541 |
ry = (ext & 8) ? AREG(ext, 0) : DREG(ext, 0); |
| 2542 |
} else {
|
| 2543 |
loadval = addr = NULL_QREG; |
| 2544 |
rx = (insn & 0x40) ? AREG(insn, 9) : DREG(insn, 9); |
| 2545 |
ry = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); |
| 2546 |
} |
| 2547 |
|
| 2548 |
gen_mac_clear_flags(); |
| 2549 |
#if 0
|
| 2550 |
l1 = -1;
|
| 2551 |
/* Disabled because conditional branches clobber temporary vars. */
|
| 2552 |
if ((s->env->macsr & MACSR_OMC) != 0 && !dual) {
|
| 2553 |
/* Skip the multiply if we know we will ignore it. */
|
| 2554 |
l1 = gen_new_label();
|
| 2555 |
tmp = tcg_temp_new();
|
| 2556 |
tcg_gen_andi_i32(tmp, QREG_MACSR, 1 << (acc + 8));
|
| 2557 |
gen_op_jmp_nz32(tmp, l1);
|
| 2558 |
}
|
| 2559 |
#endif
|
| 2560 |
|
| 2561 |
if ((ext & 0x0800) == 0) { |
| 2562 |
/* Word. */
|
| 2563 |
rx = gen_mac_extract_word(s, rx, (ext & 0x80) != 0); |
| 2564 |
ry = gen_mac_extract_word(s, ry, (ext & 0x40) != 0); |
| 2565 |
} |
| 2566 |
if (s->env->macsr & MACSR_FI) {
|
| 2567 |
gen_helper_macmulf(s->mactmp, cpu_env, rx, ry); |
| 2568 |
} else {
|
| 2569 |
if (s->env->macsr & MACSR_SU)
|
| 2570 |
gen_helper_macmuls(s->mactmp, cpu_env, rx, ry); |
| 2571 |
else
|
| 2572 |
gen_helper_macmulu(s->mactmp, cpu_env, rx, ry); |
| 2573 |
switch ((ext >> 9) & 3) { |
| 2574 |
case 1: |
| 2575 |
tcg_gen_shli_i64(s->mactmp, s->mactmp, 1);
|
| 2576 |
break;
|
| 2577 |
case 3: |
| 2578 |
tcg_gen_shri_i64(s->mactmp, s->mactmp, 1);
|
| 2579 |
break;
|
| 2580 |
} |
| 2581 |
} |
| 2582 |
|
| 2583 |
if (dual) {
|
| 2584 |
/* Save the overflow flag from the multiply. */
|
| 2585 |
saved_flags = tcg_temp_new(); |
| 2586 |
tcg_gen_mov_i32(saved_flags, QREG_MACSR); |
| 2587 |
} else {
|
| 2588 |
saved_flags = NULL_QREG; |
| 2589 |
} |
| 2590 |
|
| 2591 |
#if 0
|
| 2592 |
/* Disabled because conditional branches clobber temporary vars. */
|
| 2593 |
if ((s->env->macsr & MACSR_OMC) != 0 && dual) {
|
| 2594 |
/* Skip the accumulate if the value is already saturated. */
|
| 2595 |
l1 = gen_new_label();
|
| 2596 |
tmp = tcg_temp_new();
|
| 2597 |
gen_op_and32(tmp, QREG_MACSR, tcg_const_i32(MACSR_PAV0 << acc));
|
| 2598 |
gen_op_jmp_nz32(tmp, l1);
|
| 2599 |
}
|
| 2600 |
#endif
|
| 2601 |
|
| 2602 |
if (insn & 0x100) |
| 2603 |
tcg_gen_sub_i64(MACREG(acc), MACREG(acc), s->mactmp); |
| 2604 |
else
|
| 2605 |
tcg_gen_add_i64(MACREG(acc), MACREG(acc), s->mactmp); |
| 2606 |
|
| 2607 |
if (s->env->macsr & MACSR_FI)
|
| 2608 |
gen_helper_macsatf(cpu_env, tcg_const_i32(acc)); |
| 2609 |
else if (s->env->macsr & MACSR_SU) |
| 2610 |
gen_helper_macsats(cpu_env, tcg_const_i32(acc)); |
| 2611 |
else
|
| 2612 |
gen_helper_macsatu(cpu_env, tcg_const_i32(acc)); |
| 2613 |
|
| 2614 |
#if 0
|
| 2615 |
/* Disabled because conditional branches clobber temporary vars. */
|
| 2616 |
if (l1 != -1)
|
| 2617 |
gen_set_label(l1);
|
| 2618 |
#endif
|
| 2619 |
|
| 2620 |
if (dual) {
|
| 2621 |
/* Dual accumulate variant. */
|
| 2622 |
acc = (ext >> 2) & 3; |
| 2623 |
/* Restore the overflow flag from the multiplier. */
|
| 2624 |
tcg_gen_mov_i32(QREG_MACSR, saved_flags); |
| 2625 |
#if 0
|
| 2626 |
/* Disabled because conditional branches clobber temporary vars. */
|
| 2627 |
if ((s->env->macsr & MACSR_OMC) != 0) {
|
| 2628 |
/* Skip the accumulate if the value is already saturated. */
|
| 2629 |
l1 = gen_new_label();
|
| 2630 |
tmp = tcg_temp_new();
|
| 2631 |
gen_op_and32(tmp, QREG_MACSR, tcg_const_i32(MACSR_PAV0 << acc));
|
| 2632 |
gen_op_jmp_nz32(tmp, l1);
|
| 2633 |
}
|
| 2634 |
#endif
|
| 2635 |
if (ext & 2) |
| 2636 |
tcg_gen_sub_i64(MACREG(acc), MACREG(acc), s->mactmp); |
| 2637 |
else
|
| 2638 |
tcg_gen_add_i64(MACREG(acc), MACREG(acc), s->mactmp); |
| 2639 |
if (s->env->macsr & MACSR_FI)
|
| 2640 |
gen_helper_macsatf(cpu_env, tcg_const_i32(acc)); |
| 2641 |
else if (s->env->macsr & MACSR_SU) |
| 2642 |
gen_helper_macsats(cpu_env, tcg_const_i32(acc)); |
| 2643 |
else
|
| 2644 |
gen_helper_macsatu(cpu_env, tcg_const_i32(acc)); |
| 2645 |
#if 0
|
| 2646 |
/* Disabled because conditional branches clobber temporary vars. */
|
| 2647 |
if (l1 != -1)
|
| 2648 |
gen_set_label(l1);
|
| 2649 |
#endif
|
| 2650 |
} |
| 2651 |
gen_helper_mac_set_flags(cpu_env, tcg_const_i32(acc)); |
| 2652 |
|
| 2653 |
if (insn & 0x30) { |
| 2654 |
TCGv rw; |
| 2655 |
rw = (insn & 0x40) ? AREG(insn, 9) : DREG(insn, 9); |
| 2656 |
tcg_gen_mov_i32(rw, loadval); |
| 2657 |
/* FIXME: Should address writeback happen with the masked or
|
| 2658 |
unmasked value? */
|
| 2659 |
switch ((insn >> 3) & 7) { |
| 2660 |
case 3: /* Post-increment. */ |
| 2661 |
tcg_gen_addi_i32(AREG(insn, 0), addr, 4); |
| 2662 |
break;
|
| 2663 |
case 4: /* Pre-decrement. */ |
| 2664 |
tcg_gen_mov_i32(AREG(insn, 0), addr);
|
| 2665 |
} |
| 2666 |
} |
| 2667 |
} |
| 2668 |
|
| 2669 |
DISAS_INSN(from_mac) |
| 2670 |
{
|
| 2671 |
TCGv rx; |
| 2672 |
TCGv_i64 acc; |
| 2673 |
int accnum;
|
| 2674 |
|
| 2675 |
rx = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); |
| 2676 |
accnum = (insn >> 9) & 3; |
| 2677 |
acc = MACREG(accnum); |
| 2678 |
if (s->env->macsr & MACSR_FI) {
|
| 2679 |
gen_helper_get_macf(rx, cpu_env, acc); |
| 2680 |
} else if ((s->env->macsr & MACSR_OMC) == 0) { |
| 2681 |
tcg_gen_trunc_i64_i32(rx, acc); |
| 2682 |
} else if (s->env->macsr & MACSR_SU) { |
| 2683 |
gen_helper_get_macs(rx, acc); |
| 2684 |
} else {
|
| 2685 |
gen_helper_get_macu(rx, acc); |
| 2686 |
} |
| 2687 |
if (insn & 0x40) { |
| 2688 |
tcg_gen_movi_i64(acc, 0);
|
| 2689 |
tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, ~(MACSR_PAV0 << accnum)); |
| 2690 |
} |
| 2691 |
} |
| 2692 |
|
| 2693 |
DISAS_INSN(move_mac) |
| 2694 |
{
|
| 2695 |
/* FIXME: This can be done without a helper. */
|
| 2696 |
int src;
|
| 2697 |
TCGv dest; |
| 2698 |
src = insn & 3;
|
| 2699 |
dest = tcg_const_i32((insn >> 9) & 3); |
| 2700 |
gen_helper_mac_move(cpu_env, dest, tcg_const_i32(src)); |
| 2701 |
gen_mac_clear_flags(); |
| 2702 |
gen_helper_mac_set_flags(cpu_env, dest); |
| 2703 |
} |
| 2704 |
|
| 2705 |
DISAS_INSN(from_macsr) |
| 2706 |
{
|
| 2707 |
TCGv reg; |
| 2708 |
|
| 2709 |
reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); |
| 2710 |
tcg_gen_mov_i32(reg, QREG_MACSR); |
| 2711 |
} |
| 2712 |
|
| 2713 |
DISAS_INSN(from_mask) |
| 2714 |
{
|
| 2715 |
TCGv reg; |
| 2716 |
reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); |
| 2717 |
tcg_gen_mov_i32(reg, QREG_MAC_MASK); |
| 2718 |
} |
| 2719 |
|
| 2720 |
DISAS_INSN(from_mext) |
| 2721 |
{
|
| 2722 |
TCGv reg; |
| 2723 |
TCGv acc; |
| 2724 |
reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); |
| 2725 |
acc = tcg_const_i32((insn & 0x400) ? 2 : 0); |
| 2726 |
if (s->env->macsr & MACSR_FI)
|
| 2727 |
gen_helper_get_mac_extf(reg, cpu_env, acc); |
| 2728 |
else
|
| 2729 |
gen_helper_get_mac_exti(reg, cpu_env, acc); |
| 2730 |
} |
| 2731 |
|
| 2732 |
DISAS_INSN(macsr_to_ccr) |
| 2733 |
{
|
| 2734 |
tcg_gen_movi_i32(QREG_CC_X, 0);
|
| 2735 |
tcg_gen_andi_i32(QREG_CC_DEST, QREG_MACSR, 0xf);
|
| 2736 |
s->cc_op = CC_OP_FLAGS; |
| 2737 |
} |
| 2738 |
|
| 2739 |
DISAS_INSN(to_mac) |
| 2740 |
{
|
| 2741 |
TCGv_i64 acc; |
| 2742 |
TCGv val; |
| 2743 |
int accnum;
|
| 2744 |
accnum = (insn >> 9) & 3; |
| 2745 |
acc = MACREG(accnum); |
| 2746 |
SRC_EA(env, val, OS_LONG, 0, NULL); |
| 2747 |
if (s->env->macsr & MACSR_FI) {
|
| 2748 |
tcg_gen_ext_i32_i64(acc, val); |
| 2749 |
tcg_gen_shli_i64(acc, acc, 8);
|
| 2750 |
} else if (s->env->macsr & MACSR_SU) { |
| 2751 |
tcg_gen_ext_i32_i64(acc, val); |
| 2752 |
} else {
|
| 2753 |
tcg_gen_extu_i32_i64(acc, val); |
| 2754 |
} |
| 2755 |
tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, ~(MACSR_PAV0 << accnum)); |
| 2756 |
gen_mac_clear_flags(); |
| 2757 |
gen_helper_mac_set_flags(cpu_env, tcg_const_i32(accnum)); |
| 2758 |
} |
| 2759 |
|
| 2760 |
DISAS_INSN(to_macsr) |
| 2761 |
{
|
| 2762 |
TCGv val; |
| 2763 |
SRC_EA(env, val, OS_LONG, 0, NULL); |
| 2764 |
gen_helper_set_macsr(cpu_env, val); |
| 2765 |
gen_lookup_tb(s); |
| 2766 |
} |
| 2767 |
|
| 2768 |
DISAS_INSN(to_mask) |
| 2769 |
{
|
| 2770 |
TCGv val; |
| 2771 |
SRC_EA(env, val, OS_LONG, 0, NULL); |
| 2772 |
tcg_gen_ori_i32(QREG_MAC_MASK, val, 0xffff0000);
|
| 2773 |
} |
| 2774 |
|
| 2775 |
DISAS_INSN(to_mext) |
| 2776 |
{
|
| 2777 |
TCGv val; |
| 2778 |
TCGv acc; |
| 2779 |
SRC_EA(env, val, OS_LONG, 0, NULL); |
| 2780 |
acc = tcg_const_i32((insn & 0x400) ? 2 : 0); |
| 2781 |
if (s->env->macsr & MACSR_FI)
|
| 2782 |
gen_helper_set_mac_extf(cpu_env, val, acc); |
| 2783 |
else if (s->env->macsr & MACSR_SU) |
| 2784 |
gen_helper_set_mac_exts(cpu_env, val, acc); |
| 2785 |
else
|
| 2786 |
gen_helper_set_mac_extu(cpu_env, val, acc); |
| 2787 |
} |
| 2788 |
|
| 2789 |
static disas_proc opcode_table[65536]; |
| 2790 |
|
| 2791 |
static void |
| 2792 |
register_opcode (disas_proc proc, uint16_t opcode, uint16_t mask) |
| 2793 |
{
|
| 2794 |
int i;
|
| 2795 |
int from;
|
| 2796 |
int to;
|
| 2797 |
|
| 2798 |
/* Sanity check. All set bits must be included in the mask. */
|
| 2799 |
if (opcode & ~mask) {
|
| 2800 |
fprintf(stderr, |
| 2801 |
"qemu internal error: bogus opcode definition %04x/%04x\n",
|
| 2802 |
opcode, mask); |
| 2803 |
abort(); |
| 2804 |
} |
| 2805 |
/* This could probably be cleverer. For now just optimize the case where
|
| 2806 |
the top bits are known. */
|
| 2807 |
/* Find the first zero bit in the mask. */
|
| 2808 |
i = 0x8000;
|
| 2809 |
while ((i & mask) != 0) |
| 2810 |
i >>= 1;
|
| 2811 |
/* Iterate over all combinations of this and lower bits. */
|
| 2812 |
if (i == 0) |
| 2813 |
i = 1;
|
| 2814 |
else
|
| 2815 |
i <<= 1;
|
| 2816 |
from = opcode & ~(i - 1);
|
| 2817 |
to = from + i; |
| 2818 |
for (i = from; i < to; i++) {
|
| 2819 |
if ((i & mask) == opcode)
|
| 2820 |
opcode_table[i] = proc; |
| 2821 |
} |
| 2822 |
} |
| 2823 |
|
| 2824 |
/* Register m68k opcode handlers. Order is important.
|
| 2825 |
Later insn override earlier ones. */
|
| 2826 |
void register_m68k_insns (CPUM68KState *env)
|
| 2827 |
{
|
| 2828 |
#define INSN(name, opcode, mask, feature) do { \ |
| 2829 |
if (m68k_feature(env, M68K_FEATURE_##feature)) \ |
| 2830 |
register_opcode(disas_##name, 0x##opcode, 0x##mask); \ |
| 2831 |
} while(0) |
| 2832 |
INSN(undef, 0000, 0000, CF_ISA_A); |
| 2833 |
INSN(arith_im, 0080, fff8, CF_ISA_A);
|
| 2834 |
INSN(bitrev, 00c0, fff8, CF_ISA_APLUSC);
|
| 2835 |
INSN(bitop_reg, 0100, f1c0, CF_ISA_A);
|
| 2836 |
INSN(bitop_reg, 0140, f1c0, CF_ISA_A);
|
| 2837 |
INSN(bitop_reg, 0180, f1c0, CF_ISA_A);
|
| 2838 |
INSN(bitop_reg, 01c0, f1c0, CF_ISA_A);
|
| 2839 |
INSN(arith_im, 0280, fff8, CF_ISA_A);
|
| 2840 |
INSN(byterev, 02c0, fff8, CF_ISA_APLUSC);
|
| 2841 |
INSN(arith_im, 0480, fff8, CF_ISA_A);
|
| 2842 |
INSN(ff1, 04c0, fff8, CF_ISA_APLUSC);
|
| 2843 |
INSN(arith_im, 0680, fff8, CF_ISA_A);
|
| 2844 |
INSN(bitop_im, 0800, ffc0, CF_ISA_A);
|
| 2845 |
INSN(bitop_im, 0840, ffc0, CF_ISA_A);
|
| 2846 |
INSN(bitop_im, 0880, ffc0, CF_ISA_A);
|
| 2847 |
INSN(bitop_im, 08c0, ffc0, CF_ISA_A);
|
| 2848 |
INSN(arith_im, 0a80, fff8, CF_ISA_A);
|
| 2849 |
INSN(arith_im, 0c00, ff38, CF_ISA_A);
|
| 2850 |
INSN(move, 1000, f000, CF_ISA_A);
|
| 2851 |
INSN(move, 2000, f000, CF_ISA_A);
|
| 2852 |
INSN(move, 3000, f000, CF_ISA_A);
|
| 2853 |
INSN(strldsr, 40e7, ffff, CF_ISA_APLUSC); |
| 2854 |
INSN(negx, 4080, fff8, CF_ISA_A);
|
| 2855 |
INSN(move_from_sr, 40c0, fff8, CF_ISA_A);
|
| 2856 |
INSN(lea, 41c0, f1c0, CF_ISA_A);
|
| 2857 |
INSN(clr, 4200, ff00, CF_ISA_A);
|
| 2858 |
INSN(undef, 42c0, ffc0, CF_ISA_A);
|
| 2859 |
INSN(move_from_ccr, 42c0, fff8, CF_ISA_A);
|
| 2860 |
INSN(neg, 4480, fff8, CF_ISA_A);
|
| 2861 |
INSN(move_to_ccr, 44c0, ffc0, CF_ISA_A);
|
| 2862 |
INSN(not, 4680, fff8, CF_ISA_A);
|
| 2863 |
INSN(move_to_sr, 46c0, ffc0, CF_ISA_A);
|
| 2864 |
INSN(pea, 4840, ffc0, CF_ISA_A);
|
| 2865 |
INSN(swap, 4840, fff8, CF_ISA_A);
|
| 2866 |
INSN(movem, 48c0, fbc0, CF_ISA_A);
|
| 2867 |
INSN(ext, 4880, fff8, CF_ISA_A);
|
| 2868 |
INSN(ext, 48c0, fff8, CF_ISA_A);
|
| 2869 |
INSN(ext, 49c0, fff8, CF_ISA_A);
|
| 2870 |
INSN(tst, 4a00, ff00, CF_ISA_A);
|
| 2871 |
INSN(tas, 4ac0, ffc0, CF_ISA_B);
|
| 2872 |
INSN(halt, 4ac8, ffff, CF_ISA_A);
|
| 2873 |
INSN(pulse, 4acc, ffff, CF_ISA_A);
|
| 2874 |
INSN(illegal, 4afc, ffff, CF_ISA_A);
|
| 2875 |
INSN(mull, 4c00, ffc0, CF_ISA_A);
|
| 2876 |
INSN(divl, 4c40, ffc0, CF_ISA_A);
|
| 2877 |
INSN(sats, 4c80, fff8, CF_ISA_B);
|
| 2878 |
INSN(trap, 4e40, fff0, CF_ISA_A);
|
| 2879 |
INSN(link, 4e50, fff8, CF_ISA_A);
|
| 2880 |
INSN(unlk, 4e58, fff8, CF_ISA_A);
|
| 2881 |
INSN(move_to_usp, 4e60, fff8, USP);
|
| 2882 |
INSN(move_from_usp, 4e68, fff8, USP);
|
| 2883 |
INSN(nop, 4e71, ffff, CF_ISA_A);
|
| 2884 |
INSN(stop, 4e72, ffff, CF_ISA_A);
|
| 2885 |
INSN(rte, 4e73, ffff, CF_ISA_A);
|
| 2886 |
INSN(rts, 4e75, ffff, CF_ISA_A);
|
| 2887 |
INSN(movec, 4e7b, ffff, CF_ISA_A);
|
| 2888 |
INSN(jump, 4e80, ffc0, CF_ISA_A);
|
| 2889 |
INSN(jump, 4ec0, ffc0, CF_ISA_A);
|
| 2890 |
INSN(addsubq, 5180, f1c0, CF_ISA_A);
|
| 2891 |
INSN(scc, 50c0, f0f8, CF_ISA_A);
|
| 2892 |
INSN(addsubq, 5080, f1c0, CF_ISA_A);
|
| 2893 |
INSN(tpf, 51f8, fff8, CF_ISA_A); |
| 2894 |
|
| 2895 |
/* Branch instructions. */
|
| 2896 |
INSN(branch, 6000, f000, CF_ISA_A);
|
| 2897 |
/* Disable long branch instructions, then add back the ones we want. */
|
| 2898 |
INSN(undef, 60ff, f0ff, CF_ISA_A); /* All long branches. */ |
| 2899 |
INSN(branch, 60ff, f0ff, CF_ISA_B); |
| 2900 |
INSN(undef, 60ff, ffff, CF_ISA_B); /* bra.l */ |
| 2901 |
INSN(branch, 60ff, ffff, BRAL); |
| 2902 |
|
| 2903 |
INSN(moveq, 7000, f100, CF_ISA_A);
|
| 2904 |
INSN(mvzs, 7100, f100, CF_ISA_B);
|
| 2905 |
INSN(or, 8000, f000, CF_ISA_A);
|
| 2906 |
INSN(divw, 80c0, f0c0, CF_ISA_A);
|
| 2907 |
INSN(addsub, 9000, f000, CF_ISA_A);
|
| 2908 |
INSN(subx, 9180, f1f8, CF_ISA_A);
|
| 2909 |
INSN(suba, 91c0, f1c0, CF_ISA_A);
|
| 2910 |
|
| 2911 |
INSN(undef_mac, a000, f000, CF_ISA_A); |
| 2912 |
INSN(mac, a000, f100, CF_EMAC); |
| 2913 |
INSN(from_mac, a180, f9b0, CF_EMAC); |
| 2914 |
INSN(move_mac, a110, f9fc, CF_EMAC); |
| 2915 |
INSN(from_macsr,a980, f9f0, CF_EMAC); |
| 2916 |
INSN(from_mask, ad80, fff0, CF_EMAC); |
| 2917 |
INSN(from_mext, ab80, fbf0, CF_EMAC); |
| 2918 |
INSN(macsr_to_ccr, a9c0, ffff, CF_EMAC); |
| 2919 |
INSN(to_mac, a100, f9c0, CF_EMAC); |
| 2920 |
INSN(to_macsr, a900, ffc0, CF_EMAC); |
| 2921 |
INSN(to_mext, ab00, fbc0, CF_EMAC); |
| 2922 |
INSN(to_mask, ad00, ffc0, CF_EMAC); |
| 2923 |
|
| 2924 |
INSN(mov3q, a140, f1c0, CF_ISA_B); |
| 2925 |
INSN(cmp, b000, f1c0, CF_ISA_B); /* cmp.b */
|
| 2926 |
INSN(cmp, b040, f1c0, CF_ISA_B); /* cmp.w */
|
| 2927 |
INSN(cmpa, b0c0, f1c0, CF_ISA_B); /* cmpa.w */
|
| 2928 |
INSN(cmp, b080, f1c0, CF_ISA_A); |
| 2929 |
INSN(cmpa, b1c0, f1c0, CF_ISA_A); |
| 2930 |
INSN(eor, b180, f1c0, CF_ISA_A); |
| 2931 |
INSN(and, c000, f000, CF_ISA_A); |
| 2932 |
INSN(mulw, c0c0, f0c0, CF_ISA_A); |
| 2933 |
INSN(addsub, d000, f000, CF_ISA_A); |
| 2934 |
INSN(addx, d180, f1f8, CF_ISA_A); |
| 2935 |
INSN(adda, d1c0, f1c0, CF_ISA_A); |
| 2936 |
INSN(shift_im, e080, f0f0, CF_ISA_A); |
| 2937 |
INSN(shift_reg, e0a0, f0f0, CF_ISA_A); |
| 2938 |
INSN(undef_fpu, f000, f000, CF_ISA_A); |
| 2939 |
INSN(fpu, f200, ffc0, CF_FPU); |
| 2940 |
INSN(fbcc, f280, ffc0, CF_FPU); |
| 2941 |
INSN(frestore, f340, ffc0, CF_FPU); |
| 2942 |
INSN(fsave, f340, ffc0, CF_FPU); |
| 2943 |
INSN(intouch, f340, ffc0, CF_ISA_A); |
| 2944 |
INSN(cpushl, f428, ff38, CF_ISA_A); |
| 2945 |
INSN(wddata, fb00, ff00, CF_ISA_A); |
| 2946 |
INSN(wdebug, fbc0, ffc0, CF_ISA_A); |
| 2947 |
#undef INSN
|
| 2948 |
} |
| 2949 |
|
| 2950 |
/* ??? Some of this implementation is not exception safe. We should always
|
| 2951 |
write back the result to memory before setting the condition codes. */
|
| 2952 |
static void disas_m68k_insn(CPUM68KState * env, DisasContext *s) |
| 2953 |
{
|
| 2954 |
uint16_t insn; |
| 2955 |
|
| 2956 |
if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP | CPU_LOG_TB_OP_OPT))) {
|
| 2957 |
tcg_gen_debug_insn_start(s->pc); |
| 2958 |
} |
| 2959 |
|
| 2960 |
insn = cpu_lduw_code(env, s->pc); |
| 2961 |
s->pc += 2;
|
| 2962 |
|
| 2963 |
opcode_table[insn](env, s, insn); |
| 2964 |
} |
| 2965 |
|
| 2966 |
/* generate intermediate code for basic block 'tb'. */
|
| 2967 |
static inline void |
| 2968 |
gen_intermediate_code_internal(CPUM68KState *env, TranslationBlock *tb, |
| 2969 |
int search_pc)
|
| 2970 |
{
|
| 2971 |
DisasContext dc1, *dc = &dc1; |
| 2972 |
uint16_t *gen_opc_end; |
| 2973 |
CPUBreakpoint *bp; |
| 2974 |
int j, lj;
|
| 2975 |
target_ulong pc_start; |
| 2976 |
int pc_offset;
|
| 2977 |
int num_insns;
|
| 2978 |
int max_insns;
|
| 2979 |
|
| 2980 |
/* generate intermediate code */
|
| 2981 |
pc_start = tb->pc; |
| 2982 |
|
| 2983 |
dc->tb = tb; |
| 2984 |
|
| 2985 |
gen_opc_end = tcg_ctx.gen_opc_buf + OPC_MAX_SIZE; |
| 2986 |
|
| 2987 |
dc->env = env; |
| 2988 |
dc->is_jmp = DISAS_NEXT; |
| 2989 |
dc->pc = pc_start; |
| 2990 |
dc->cc_op = CC_OP_DYNAMIC; |
| 2991 |
dc->singlestep_enabled = env->singlestep_enabled; |
| 2992 |
dc->fpcr = env->fpcr; |
| 2993 |
dc->user = (env->sr & SR_S) == 0;
|
| 2994 |
dc->is_mem = 0;
|
| 2995 |
dc->done_mac = 0;
|
| 2996 |
lj = -1;
|
| 2997 |
num_insns = 0;
|
| 2998 |
max_insns = tb->cflags & CF_COUNT_MASK; |
| 2999 |
if (max_insns == 0) |
| 3000 |
max_insns = CF_COUNT_MASK; |
| 3001 |
|
| 3002 |
gen_icount_start(); |
| 3003 |
do {
|
| 3004 |
pc_offset = dc->pc - pc_start; |
| 3005 |
gen_throws_exception = NULL;
|
| 3006 |
if (unlikely(!QTAILQ_EMPTY(&env->breakpoints))) {
|
| 3007 |
QTAILQ_FOREACH(bp, &env->breakpoints, entry) {
|
| 3008 |
if (bp->pc == dc->pc) {
|
| 3009 |
gen_exception(dc, dc->pc, EXCP_DEBUG); |
| 3010 |
dc->is_jmp = DISAS_JUMP; |
| 3011 |
break;
|
| 3012 |
} |
| 3013 |
} |
| 3014 |
if (dc->is_jmp)
|
| 3015 |
break;
|
| 3016 |
} |
| 3017 |
if (search_pc) {
|
| 3018 |
j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf; |
| 3019 |
if (lj < j) {
|
| 3020 |
lj++; |
| 3021 |
while (lj < j)
|
| 3022 |
tcg_ctx.gen_opc_instr_start[lj++] = 0;
|
| 3023 |
} |
| 3024 |
tcg_ctx.gen_opc_pc[lj] = dc->pc; |
| 3025 |
tcg_ctx.gen_opc_instr_start[lj] = 1;
|
| 3026 |
tcg_ctx.gen_opc_icount[lj] = num_insns; |
| 3027 |
} |
| 3028 |
if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO)) |
| 3029 |
gen_io_start(); |
| 3030 |
dc->insn_pc = dc->pc; |
| 3031 |
disas_m68k_insn(env, dc); |
| 3032 |
num_insns++; |
| 3033 |
} while (!dc->is_jmp && tcg_ctx.gen_opc_ptr < gen_opc_end &&
|
| 3034 |
!env->singlestep_enabled && |
| 3035 |
!singlestep && |
| 3036 |
(pc_offset) < (TARGET_PAGE_SIZE - 32) &&
|
| 3037 |
num_insns < max_insns); |
| 3038 |
|
| 3039 |
if (tb->cflags & CF_LAST_IO)
|
| 3040 |
gen_io_end(); |
| 3041 |
if (unlikely(env->singlestep_enabled)) {
|
| 3042 |
/* Make sure the pc is updated, and raise a debug exception. */
|
| 3043 |
if (!dc->is_jmp) {
|
| 3044 |
gen_flush_cc_op(dc); |
| 3045 |
tcg_gen_movi_i32(QREG_PC, dc->pc); |
| 3046 |
} |
| 3047 |
gen_helper_raise_exception(cpu_env, tcg_const_i32(EXCP_DEBUG)); |
| 3048 |
} else {
|
| 3049 |
switch(dc->is_jmp) {
|
| 3050 |
case DISAS_NEXT:
|
| 3051 |
gen_flush_cc_op(dc); |
| 3052 |
gen_jmp_tb(dc, 0, dc->pc);
|
| 3053 |
break;
|
| 3054 |
default:
|
| 3055 |
case DISAS_JUMP:
|
| 3056 |
case DISAS_UPDATE:
|
| 3057 |
gen_flush_cc_op(dc); |
| 3058 |
/* indicate that the hash table must be used to find the next TB */
|
| 3059 |
tcg_gen_exit_tb(0);
|
| 3060 |
break;
|
| 3061 |
case DISAS_TB_JUMP:
|
| 3062 |
/* nothing more to generate */
|
| 3063 |
break;
|
| 3064 |
} |
| 3065 |
} |
| 3066 |
gen_icount_end(tb, num_insns); |
| 3067 |
*tcg_ctx.gen_opc_ptr = INDEX_op_end; |
| 3068 |
|
| 3069 |
#ifdef DEBUG_DISAS
|
| 3070 |
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
|
| 3071 |
qemu_log("----------------\n");
|
| 3072 |
qemu_log("IN: %s\n", lookup_symbol(pc_start));
|
| 3073 |
log_target_disas(env, pc_start, dc->pc - pc_start, 0);
|
| 3074 |
qemu_log("\n");
|
| 3075 |
} |
| 3076 |
#endif
|
| 3077 |
if (search_pc) {
|
| 3078 |
j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf; |
| 3079 |
lj++; |
| 3080 |
while (lj <= j)
|
| 3081 |
tcg_ctx.gen_opc_instr_start[lj++] = 0;
|
| 3082 |
} else {
|
| 3083 |
tb->size = dc->pc - pc_start; |
| 3084 |
tb->icount = num_insns; |
| 3085 |
} |
| 3086 |
|
| 3087 |
//optimize_flags();
|
| 3088 |
//expand_target_qops();
|
| 3089 |
} |
| 3090 |
|
| 3091 |
void gen_intermediate_code(CPUM68KState *env, TranslationBlock *tb)
|
| 3092 |
{
|
| 3093 |
gen_intermediate_code_internal(env, tb, 0);
|
| 3094 |
} |
| 3095 |
|
| 3096 |
void gen_intermediate_code_pc(CPUM68KState *env, TranslationBlock *tb)
|
| 3097 |
{
|
| 3098 |
gen_intermediate_code_internal(env, tb, 1);
|
| 3099 |
} |
| 3100 |
|
| 3101 |
void cpu_dump_state(CPUM68KState *env, FILE *f, fprintf_function cpu_fprintf,
|
| 3102 |
int flags)
|
| 3103 |
{
|
| 3104 |
int i;
|
| 3105 |
uint16_t sr; |
| 3106 |
CPU_DoubleU u; |
| 3107 |
for (i = 0; i < 8; i++) |
| 3108 |
{
|
| 3109 |
u.d = env->fregs[i]; |
| 3110 |
cpu_fprintf (f, "D%d = %08x A%d = %08x F%d = %08x%08x (%12g)\n",
|
| 3111 |
i, env->dregs[i], i, env->aregs[i], |
| 3112 |
i, u.l.upper, u.l.lower, *(double *)&u.d);
|
| 3113 |
} |
| 3114 |
cpu_fprintf (f, "PC = %08x ", env->pc);
|
| 3115 |
sr = env->sr; |
| 3116 |
cpu_fprintf (f, "SR = %04x %c%c%c%c%c ", sr, (sr & 0x10) ? 'X' : '-', |
| 3117 |
(sr & CCF_N) ? 'N' : '-', (sr & CCF_Z) ? 'Z' : '-', |
| 3118 |
(sr & CCF_V) ? 'V' : '-', (sr & CCF_C) ? 'C' : '-'); |
| 3119 |
cpu_fprintf (f, "FPRESULT = %12g\n", *(double *)&env->fp_result); |
| 3120 |
} |
| 3121 |
|
| 3122 |
void restore_state_to_opc(CPUM68KState *env, TranslationBlock *tb, int pc_pos) |
| 3123 |
{
|
| 3124 |
env->pc = tcg_ctx.gen_opc_pc[pc_pos]; |
| 3125 |
} |