cpu-all.h

   1 /*
   2  * defines common to all virtual CPUs
   3  *
   4  *  Copyright (c) 2003 Fabrice Bellard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20 #ifndef CPU_ALL_H
  21 #define CPU_ALL_H
  22
  23 #if defined(__arm__) || defined(__sparc__)
  24 #define WORDS_ALIGNED
  25 #endif
  26
  27 /* some important defines:
  28  *
  29  * WORDS_ALIGNED : if defined, the host cpu can only make word aligned
  30  * memory accesses.
  31  *
  32  * WORDS_BIGENDIAN : if defined, the host cpu is big endian and
  33  * otherwise little endian.
  34  *
  35  * (TARGET_WORDS_ALIGNED : same for target cpu (not supported yet))
  36  *
  37  * TARGET_WORDS_BIGENDIAN : same for target cpu
  38  */
  39
  40 #include "bswap.h"
  41
  42 #if defined(WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
  43 #define BSWAP_NEEDED
  44 #endif
  45
  46 #ifdef BSWAP_NEEDED
  47
  48 static inline uint16_t tswap16(uint16_t s)
  49 {
  50     return bswap16(s);
  51 }
  52
  53 static inline uint32_t tswap32(uint32_t s)
  54 {
  55     return bswap32(s);
  56 }
  57
  58 static inline uint64_t tswap64(uint64_t s)
  59 {
  60     return bswap64(s);
  61 }
  62
  63 static inline void tswap16s(uint16_t *s)
  64 {
  65     *s = bswap16(*s);
  66 }
  67
  68 static inline void tswap32s(uint32_t *s)
  69 {
  70     *s = bswap32(*s);
  71 }
  72
  73 static inline void tswap64s(uint64_t *s)
  74 {
  75     *s = bswap64(*s);
  76 }
  77
  78 #else
  79
  80 static inline uint16_t tswap16(uint16_t s)
  81 {
  82     return s;
  83 }
  84
  85 static inline uint32_t tswap32(uint32_t s)
  86 {
  87     return s;
  88 }
  89
  90 static inline uint64_t tswap64(uint64_t s)
  91 {
  92     return s;
  93 }
  94
  95 static inline void tswap16s(uint16_t *s)
  96 {
  97 }
  98
  99 static inline void tswap32s(uint32_t *s)
 100 {
 101 }
 102
 103 static inline void tswap64s(uint64_t *s)
 104 {
 105 }
 106
 107 #endif
 108
 109 #if TARGET_LONG_SIZE == 4
 110 #define tswapl(s) tswap32(s)
 111 #define tswapls(s) tswap32s((uint32_t *)(s))
 112 #else
 113 #define tswapl(s) tswap64(s)
 114 #define tswapls(s) tswap64s((uint64_t *)(s))
 115 #endif
 116
 117 /* NOTE: arm is horrible as double 32 bit words are stored in big endian ! */
 118 typedef union {
 119     double d;
 120 #if !defined(WORDS_BIGENDIAN) && !defined(__arm__)
 121     struct {
 122         uint32_t lower;
 123         uint32_t upper;
 124     } l;
 125 #else
 126     struct {
 127         uint32_t upper;
 128         uint32_t lower;
 129     } l;
 130 #endif
 131     uint64_t ll;
 132 } CPU_DoubleU;
 133
 134 /* CPU memory access without any memory or io remapping */
 135
 136 /*
 137  * the generic syntax for the memory accesses is:
 138  *
 139  * load: ld{type}{sign}{size}{endian}_{access_type}(ptr)
 140  *
 141  * store: st{type}{size}{endian}_{access_type}(ptr, val)
 142  *
 143  * type is:
 144  * (empty): integer access
 145  *   f    : float access
 146  *
 147  * sign is:
 148  * (empty): for floats or 32 bit size
 149  *   u    : unsigned
 150  *   s    : signed
 151  *
 152  * size is:
 153  *   b: 8 bits
 154  *   w: 16 bits
 155  *   l: 32 bits
 156  *   q: 64 bits
 157  *
 158  * endian is:
 159  * (empty): target cpu endianness or 8 bit access
 160  *   r    : reversed target cpu endianness (not implemented yet)
 161  *   be   : big endian (not implemented yet)
 162  *   le   : little endian (not implemented yet)
 163  *
 164  * access_type is:
 165  *   raw    : host memory access
 166  *   user   : user mode access using soft MMU
 167  *   kernel : kernel mode access using soft MMU
 168  */
 169 static inline int ldub_p(void *ptr)
 170 {
 171     return *(uint8_t *)ptr;
 172 }
 173
 174 static inline int ldsb_p(void *ptr)
 175 {
 176     return *(int8_t *)ptr;
 177 }
 178
 179 static inline void stb_p(void *ptr, int v)
 180 {
 181     *(uint8_t *)ptr = v;
 182 }
 183
 184 /* NOTE: on arm, putting 2 in /proc/sys/debug/alignment so that the
 185    kernel handles unaligned load/stores may give better results, but
 186    it is a system wide setting : bad */
 187 #if !defined(TARGET_WORDS_BIGENDIAN) && (defined(WORDS_BIGENDIAN) || defined(WORDS_ALIGNED))
 188
 189 /* conservative code for little endian unaligned accesses */
 190 static inline int lduw_p(void *ptr)
 191 {
 192 #ifdef __powerpc__
 193     int val;
 194     __asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (ptr));
 195     return val;
 196 #else
 197     uint8_t *p = ptr;
 198     return p[0] | (p[1] << 8);
 199 #endif
 200 }
 201
 202 static inline int ldsw_p(void *ptr)
 203 {
 204 #ifdef __powerpc__
 205     int val;
 206     __asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (ptr));
 207     return (int16_t)val;
 208 #else
 209     uint8_t *p = ptr;
 210     return (int16_t)(p[0] | (p[1] << 8));
 211 #endif
 212 }
 213
 214 static inline int ldl_p(void *ptr)
 215 {
 216 #ifdef __powerpc__
 217     int val;
 218     __asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (val) : "r" (ptr));
 219     return val;
 220 #else
 221     uint8_t *p = ptr;
 222     return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
 223 #endif
 224 }
 225
 226 static inline uint64_t ldq_p(void *ptr)
 227 {
 228     uint8_t *p = ptr;
 229     uint32_t v1, v2;
 230     v1 = ldl_p(p);
 231     v2 = ldl_p(p + 4);
 232     return v1 | ((uint64_t)v2 << 32);
 233 }
 234
 235 static inline void stw_p(void *ptr, int v)
 236 {
 237 #ifdef __powerpc__
 238     __asm__ __volatile__ ("sthbrx %1,0,%2" : "=m" (*(uint16_t *)ptr) : "r" (v), "r" (ptr));
 239 #else
 240     uint8_t *p = ptr;
 241     p[0] = v;
 242     p[1] = v >> 8;
 243 #endif
 244 }
 245
 246 static inline void stl_p(void *ptr, int v)
 247 {
 248 #ifdef __powerpc__
 249     __asm__ __volatile__ ("stwbrx %1,0,%2" : "=m" (*(uint32_t *)ptr) : "r" (v), "r" (ptr));
 250 #else
 251     uint8_t *p = ptr;
 252     p[0] = v;
 253     p[1] = v >> 8;
 254     p[2] = v >> 16;
 255     p[3] = v >> 24;
 256 #endif
 257 }
 258
 259 static inline void stq_p(void *ptr, uint64_t v)
 260 {
 261     uint8_t *p = ptr;
 262     stl_p(p, (uint32_t)v);
 263     stl_p(p + 4, v >> 32);
 264 }
 265
 266 /* float access */
 267
 268 static inline float ldfl_p(void *ptr)
 269 {
 270     union {
 271         float f;
 272         uint32_t i;
 273     } u;
 274     u.i = ldl_p(ptr);
 275     return u.f;
 276 }
 277
 278 static inline void stfl_p(void *ptr, float v)
 279 {
 280     union {
 281         float f;
 282         uint32_t i;
 283     } u;
 284     u.f = v;
 285     stl_p(ptr, u.i);
 286 }
 287
 288 static inline double ldfq_p(void *ptr)
 289 {
 290     CPU_DoubleU u;
 291     u.l.lower = ldl_p(ptr);
 292     u.l.upper = ldl_p(ptr + 4);
 293     return u.d;
 294 }
 295
 296 static inline void stfq_p(void *ptr, double v)
 297 {
 298     CPU_DoubleU u;
 299     u.d = v;
 300     stl_p(ptr, u.l.lower);
 301     stl_p(ptr + 4, u.l.upper);
 302 }
 303
 304 #elif defined(TARGET_WORDS_BIGENDIAN) && (!defined(WORDS_BIGENDIAN) || defined(WORDS_ALIGNED))
 305
 306 static inline int lduw_p(void *ptr)
 307 {
 308 #if defined(__i386__)
 309     int val;
 310     asm volatile ("movzwl %1, %0\n"
 311                   "xchgb %b0, %h0\n"
 312                   : "=q" (val)
 313                   : "m" (*(uint16_t *)ptr));
 314     return val;
 315 #else
 316     uint8_t *b = (uint8_t *) ptr;
 317     return ((b[0] << 8) | b[1]);
 318 #endif
 319 }
 320
 321 static inline int ldsw_p(void *ptr)
 322 {
 323 #if defined(__i386__)
 324     int val;
 325     asm volatile ("movzwl %1, %0\n"
 326                   "xchgb %b0, %h0\n"
 327                   : "=q" (val)
 328                   : "m" (*(uint16_t *)ptr));
 329     return (int16_t)val;
 330 #else
 331     uint8_t *b = (uint8_t *) ptr;
 332     return (int16_t)((b[0] << 8) | b[1]);
 333 #endif
 334 }
 335
 336 static inline int ldl_p(void *ptr)
 337 {
 338 #if defined(__i386__) || defined(__x86_64__)
 339     int val;
 340     asm volatile ("movl %1, %0\n"
 341                   "bswap %0\n"
 342                   : "=r" (val)
 343                   : "m" (*(uint32_t *)ptr));
 344     return val;
 345 #else
 346     uint8_t *b = (uint8_t *) ptr;
 347     return (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | b[3];
 348 #endif
 349 }
 350
 351 static inline uint64_t ldq_p(void *ptr)
 352 {
 353     uint32_t a,b;
 354     a = ldl_p(ptr);
 355     b = ldl_p(ptr+4);
 356     return (((uint64_t)a<<32)|b);
 357 }
 358
 359 static inline void stw_p(void *ptr, int v)
 360 {
 361 #if defined(__i386__)
 362     asm volatile ("xchgb %b0, %h0\n"
 363                   "movw %w0, %1\n"
 364                   : "=q" (v)
 365                   : "m" (*(uint16_t *)ptr), "0" (v));
 366 #else
 367     uint8_t *d = (uint8_t *) ptr;
 368     d[0] = v >> 8;
 369     d[1] = v;
 370 #endif
 371 }
 372
 373 static inline void stl_p(void *ptr, int v)
 374 {
 375 #if defined(__i386__) || defined(__x86_64__)
 376     asm volatile ("bswap %0\n"
 377                   "movl %0, %1\n"
 378                   : "=r" (v)
 379                   : "m" (*(uint32_t *)ptr), "0" (v));
 380 #else
 381     uint8_t *d = (uint8_t *) ptr;
 382     d[0] = v >> 24;
 383     d[1] = v >> 16;
 384     d[2] = v >> 8;
 385     d[3] = v;
 386 #endif
 387 }
 388
 389 static inline void stq_p(void *ptr, uint64_t v)
 390 {
 391     stl_p(ptr, v >> 32);
 392     stl_p(ptr + 4, v);
 393 }
 394
 395 /* float access */
 396
 397 static inline float ldfl_p(void *ptr)
 398 {
 399     union {
 400         float f;
 401         uint32_t i;
 402     } u;
 403     u.i = ldl_p(ptr);
 404     return u.f;
 405 }
 406
 407 static inline void stfl_p(void *ptr, float v)
 408 {
 409     union {
 410         float f;
 411         uint32_t i;
 412     } u;
 413     u.f = v;
 414     stl_p(ptr, u.i);
 415 }
 416
 417 static inline double ldfq_p(void *ptr)
 418 {
 419     CPU_DoubleU u;
 420     u.l.upper = ldl_p(ptr);
 421     u.l.lower = ldl_p(ptr + 4);
 422     return u.d;
 423 }
 424
 425 static inline void stfq_p(void *ptr, double v)
 426 {
 427     CPU_DoubleU u;
 428     u.d = v;
 429     stl_p(ptr, u.l.upper);
 430     stl_p(ptr + 4, u.l.lower);
 431 }
 432
 433 #else
 434
 435 static inline int lduw_p(void *ptr)
 436 {
 437     return *(uint16_t *)ptr;
 438 }
 439
 440 static inline int ldsw_p(void *ptr)
 441 {
 442     return *(int16_t *)ptr;
 443 }
 444
 445 static inline int ldl_p(void *ptr)
 446 {
 447     return *(uint32_t *)ptr;
 448 }
 449
 450 static inline uint64_t ldq_p(void *ptr)
 451 {
 452     return *(uint64_t *)ptr;
 453 }
 454
 455 static inline void stw_p(void *ptr, int v)
 456 {
 457     *(uint16_t *)ptr = v;
 458 }
 459
 460 static inline void stl_p(void *ptr, int v)
 461 {
 462     *(uint32_t *)ptr = v;
 463 }
 464
 465 static inline void stq_p(void *ptr, uint64_t v)
 466 {
 467     *(uint64_t *)ptr = v;
 468 }
 469
 470 /* float access */
 471
 472 static inline float ldfl_p(void *ptr)
 473 {
 474     return *(float *)ptr;
 475 }
 476
 477 static inline double ldfq_p(void *ptr)
 478 {
 479     return *(double *)ptr;
 480 }
 481
 482 static inline void stfl_p(void *ptr, float v)
 483 {
 484     *(float *)ptr = v;
 485 }
 486
 487 static inline void stfq_p(void *ptr, double v)
 488 {
 489     *(double *)ptr = v;
 490 }
 491 #endif
 492
 493 /* MMU memory access macros */
 494
 495 /* NOTE: we use double casts if pointers and target_ulong have
 496    different sizes */
 497 #define ldub_raw(p) ldub_p((uint8_t *)(long)(p))
 498 #define ldsb_raw(p) ldsb_p((uint8_t *)(long)(p))
 499 #define lduw_raw(p) lduw_p((uint8_t *)(long)(p))
 500 #define ldsw_raw(p) ldsw_p((uint8_t *)(long)(p))
 501 #define ldl_raw(p) ldl_p((uint8_t *)(long)(p))
 502 #define ldq_raw(p) ldq_p((uint8_t *)(long)(p))
 503 #define ldfl_raw(p) ldfl_p((uint8_t *)(long)(p))
 504 #define ldfq_raw(p) ldfq_p((uint8_t *)(long)(p))
 505 #define stb_raw(p, v) stb_p((uint8_t *)(long)(p), v)
 506 #define stw_raw(p, v) stw_p((uint8_t *)(long)(p), v)
 507 #define stl_raw(p, v) stl_p((uint8_t *)(long)(p), v)
 508 #define stq_raw(p, v) stq_p((uint8_t *)(long)(p), v)
 509 #define stfl_raw(p, v) stfl_p((uint8_t *)(long)(p), v)
 510 #define stfq_raw(p, v) stfq_p((uint8_t *)(long)(p), v)
 511
 512
 513 #if defined(CONFIG_USER_ONLY)
 514
 515 /* if user mode, no other memory access functions */
 516 #define ldub(p) ldub_raw(p)
 517 #define ldsb(p) ldsb_raw(p)
 518 #define lduw(p) lduw_raw(p)
 519 #define ldsw(p) ldsw_raw(p)
 520 #define ldl(p) ldl_raw(p)
 521 #define ldq(p) ldq_raw(p)
 522 #define ldfl(p) ldfl_raw(p)
 523 #define ldfq(p) ldfq_raw(p)
 524 #define stb(p, v) stb_raw(p, v)
 525 #define stw(p, v) stw_raw(p, v)
 526 #define stl(p, v) stl_raw(p, v)
 527 #define stq(p, v) stq_raw(p, v)
 528 #define stfl(p, v) stfl_raw(p, v)
 529 #define stfq(p, v) stfq_raw(p, v)
 530
 531 #define ldub_code(p) ldub_raw(p)
 532 #define ldsb_code(p) ldsb_raw(p)
 533 #define lduw_code(p) lduw_raw(p)
 534 #define ldsw_code(p) ldsw_raw(p)
 535 #define ldl_code(p) ldl_raw(p)
 536
 537 #define ldub_kernel(p) ldub_raw(p)
 538 #define ldsb_kernel(p) ldsb_raw(p)
 539 #define lduw_kernel(p) lduw_raw(p)
 540 #define ldsw_kernel(p) ldsw_raw(p)
 541 #define ldl_kernel(p) ldl_raw(p)
 542 #define ldfl_kernel(p) ldfl_raw(p)
 543 #define ldfq_kernel(p) ldfq_raw(p)
 544 #define stb_kernel(p, v) stb_raw(p, v)
 545 #define stw_kernel(p, v) stw_raw(p, v)
 546 #define stl_kernel(p, v) stl_raw(p, v)
 547 #define stq_kernel(p, v) stq_raw(p, v)
 548 #define stfl_kernel(p, v) stfl_raw(p, v)
 549 #define stfq_kernel(p, vt) stfq_raw(p, v)
 550
 551 #endif /* defined(CONFIG_USER_ONLY) */
 552
 553 /* page related stuff */
 554
 555 #define TARGET_PAGE_SIZE (1 << TARGET_PAGE_BITS)
 556 #define TARGET_PAGE_MASK ~(TARGET_PAGE_SIZE - 1)
 557 #define TARGET_PAGE_ALIGN(addr) (((addr) + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK)
 558
 559 extern unsigned long qemu_real_host_page_size;
 560 extern unsigned long qemu_host_page_bits;
 561 extern unsigned long qemu_host_page_size;
 562 extern unsigned long qemu_host_page_mask;
 563
 564 #define HOST_PAGE_ALIGN(addr) (((addr) + qemu_host_page_size - 1) & qemu_host_page_mask)
 565
 566 /* same as PROT_xxx */
 567 #define PAGE_READ      0x0001
 568 #define PAGE_WRITE     0x0002
 569 #define PAGE_EXEC      0x0004
 570 #define PAGE_BITS      (PAGE_READ | PAGE_WRITE | PAGE_EXEC)
 571 #define PAGE_VALID     0x0008
 572 /* original state of the write flag (used when tracking self-modifying
 573    code */
 574 #define PAGE_WRITE_ORG 0x0010
 575
 576 void page_dump(FILE *f);
 577 int page_get_flags(unsigned long address);
 578 void page_set_flags(unsigned long start, unsigned long end, int flags);
 579 void page_unprotect_range(uint8_t *data, unsigned long data_size);
 580
 581 #define SINGLE_CPU_DEFINES
 582 #ifdef SINGLE_CPU_DEFINES
 583
 584 #if defined(TARGET_I386)
 585
 586 #define CPUState CPUX86State
 587 #define cpu_init cpu_x86_init
 588 #define cpu_exec cpu_x86_exec
 589 #define cpu_gen_code cpu_x86_gen_code
 590 #define cpu_signal_handler cpu_x86_signal_handler
 591
 592 #elif defined(TARGET_ARM)
 593
 594 #define CPUState CPUARMState
 595 #define cpu_init cpu_arm_init
 596 #define cpu_exec cpu_arm_exec
 597 #define cpu_gen_code cpu_arm_gen_code
 598 #define cpu_signal_handler cpu_arm_signal_handler
 599
 600 #elif defined(TARGET_SPARC)
 601
 602 #define CPUState CPUSPARCState
 603 #define cpu_init cpu_sparc_init
 604 #define cpu_exec cpu_sparc_exec
 605 #define cpu_gen_code cpu_sparc_gen_code
 606 #define cpu_signal_handler cpu_sparc_signal_handler
 607
 608 #elif defined(TARGET_PPC)
 609
 610 #define CPUState CPUPPCState
 611 #define cpu_init cpu_ppc_init
 612 #define cpu_exec cpu_ppc_exec
 613 #define cpu_gen_code cpu_ppc_gen_code
 614 #define cpu_signal_handler cpu_ppc_signal_handler
 615
 616 #else
 617
 618 #error unsupported target CPU
 619
 620 #endif
 621
 622 #endif /* SINGLE_CPU_DEFINES */
 623
 624 void cpu_dump_state(CPUState *env, FILE *f,
 625                     int (*cpu_fprintf)(FILE *f, const char *fmt, ...),
 626                     int flags);
 627
 628 void cpu_abort(CPUState *env, const char *fmt, ...);
 629 extern CPUState *cpu_single_env;
 630 extern int code_copy_enabled;
 631
 632 #define CPU_INTERRUPT_EXIT   0x01 /* wants exit from main loop */
 633 #define CPU_INTERRUPT_HARD   0x02 /* hardware interrupt pending */
 634 #define CPU_INTERRUPT_EXITTB 0x04 /* exit the current TB (use for x86 a20 case) */
 635 #define CPU_INTERRUPT_TIMER  0x08 /* internal timer exception pending */
 636 void cpu_interrupt(CPUState *s, int mask);
 637 void cpu_reset_interrupt(CPUState *env, int mask);
 638
 639 int cpu_breakpoint_insert(CPUState *env, target_ulong pc);
 640 int cpu_breakpoint_remove(CPUState *env, target_ulong pc);
 641 void cpu_single_step(CPUState *env, int enabled);
 642 void cpu_reset(CPUState *s);
 643
 644 /* Return the physical page corresponding to a virtual one. Use it
 645    only for debugging because no protection checks are done. Return -1
 646    if no page found. */
 647 target_ulong cpu_get_phys_page_debug(CPUState *env, target_ulong addr);
 648
 649 #define CPU_LOG_TB_OUT_ASM (1 << 0)
 650 #define CPU_LOG_TB_IN_ASM  (1 << 1)
 651 #define CPU_LOG_TB_OP      (1 << 2)
 652 #define CPU_LOG_TB_OP_OPT  (1 << 3)
 653 #define CPU_LOG_INT        (1 << 4)
 654 #define CPU_LOG_EXEC       (1 << 5)
 655 #define CPU_LOG_PCALL      (1 << 6)
 656 #define CPU_LOG_IOPORT     (1 << 7)
 657 #define CPU_LOG_TB_CPU     (1 << 8)
 658
 659 /* define log items */
 660 typedef struct CPULogItem {
 661     int mask;
 662     const char *name;
 663     const char *help;
 664 } CPULogItem;
 665
 666 extern CPULogItem cpu_log_items[];
 667
 668 void cpu_set_log(int log_flags);
 669 void cpu_set_log_filename(const char *filename);
 670 int cpu_str_to_log_mask(const char *str);
 671
 672 /* IO ports API */
 673
 674 /* NOTE: as these functions may be even used when there is an isa
 675    brige on non x86 targets, we always defined them */
 676 #ifndef NO_CPU_IO_DEFS
 677 void cpu_outb(CPUState *env, int addr, int val);
 678 void cpu_outw(CPUState *env, int addr, int val);
 679 void cpu_outl(CPUState *env, int addr, int val);
 680 int cpu_inb(CPUState *env, int addr);
 681 int cpu_inw(CPUState *env, int addr);
 682 int cpu_inl(CPUState *env, int addr);
 683 #endif
 684
 685 /* memory API */
 686
 687 extern int phys_ram_size;
 688 extern int phys_ram_fd;
 689 extern uint8_t *phys_ram_base;
 690 extern uint8_t *phys_ram_dirty;
 691
 692 /* physical memory access */
 693 #define IO_MEM_NB_ENTRIES  256
 694 #define TLB_INVALID_MASK   (1 << 3)
 695 #define IO_MEM_SHIFT       4
 696
 697 #define IO_MEM_RAM         (0 << IO_MEM_SHIFT) /* hardcoded offset */
 698 #define IO_MEM_ROM         (1 << IO_MEM_SHIFT) /* hardcoded offset */
 699 #define IO_MEM_UNASSIGNED  (2 << IO_MEM_SHIFT)
 700 #define IO_MEM_CODE        (3 << IO_MEM_SHIFT) /* used internally, never use directly */
 701 #define IO_MEM_NOTDIRTY    (4 << IO_MEM_SHIFT) /* used internally, never use directly */
 702
 703 typedef void CPUWriteMemoryFunc(void *opaque, target_phys_addr_t addr, uint32_t value);
 704 typedef uint32_t CPUReadMemoryFunc(void *opaque, target_phys_addr_t addr);
 705
 706 void cpu_register_physical_memory(target_phys_addr_t start_addr,
 707                                   unsigned long size,
 708                                   unsigned long phys_offset);
 709 int cpu_register_io_memory(int io_index,
 710                            CPUReadMemoryFunc **mem_read,
 711                            CPUWriteMemoryFunc **mem_write,
 712                            void *opaque);
 713 CPUWriteMemoryFunc **cpu_get_io_memory_write(int io_index);
 714 CPUReadMemoryFunc **cpu_get_io_memory_read(int io_index);
 715
 716 void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,
 717                             int len, int is_write);
 718 static inline void cpu_physical_memory_read(target_phys_addr_t addr,
 719                                             uint8_t *buf, int len)
 720 {
 721     cpu_physical_memory_rw(addr, buf, len, 0);
 722 }
 723 static inline void cpu_physical_memory_write(target_phys_addr_t addr,
 724                                              const uint8_t *buf, int len)
 725 {
 726     cpu_physical_memory_rw(addr, (uint8_t *)buf, len, 1);
 727 }
 728
 729 int cpu_memory_rw_debug(CPUState *env, target_ulong addr,
 730                         uint8_t *buf, int len, int is_write);
 731
 732 /* read dirty bit (return 0 or 1) */
 733 static inline int cpu_physical_memory_is_dirty(target_ulong addr)
 734 {
 735     return phys_ram_dirty[addr >> TARGET_PAGE_BITS];
 736 }
 737
 738 static inline void cpu_physical_memory_set_dirty(target_ulong addr)
 739 {
 740     phys_ram_dirty[addr >> TARGET_PAGE_BITS] = 1;
 741 }
 742
 743 void cpu_physical_memory_reset_dirty(target_ulong start, target_ulong end);
 744
 745 #endif /* CPU_ALL_H */