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__) || defined(__mips__) || defined(__hppa__)
  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 #include "softfloat.h"
  42
  43 #if defined(WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
  44 #define BSWAP_NEEDED
  45 #endif
  46
  47 #ifdef BSWAP_NEEDED
  48
  49 static inline uint16_t tswap16(uint16_t s)
  50 {
  51     return bswap16(s);
  52 }
  53
  54 static inline uint32_t tswap32(uint32_t s)
  55 {
  56     return bswap32(s);
  57 }
  58
  59 static inline uint64_t tswap64(uint64_t s)
  60 {
  61     return bswap64(s);
  62 }
  63
  64 static inline void tswap16s(uint16_t *s)
  65 {
  66     *s = bswap16(*s);
  67 }
  68
  69 static inline void tswap32s(uint32_t *s)
  70 {
  71     *s = bswap32(*s);
  72 }
  73
  74 static inline void tswap64s(uint64_t *s)
  75 {
  76     *s = bswap64(*s);
  77 }
  78
  79 #else
  80
  81 static inline uint16_t tswap16(uint16_t s)
  82 {
  83     return s;
  84 }
  85
  86 static inline uint32_t tswap32(uint32_t s)
  87 {
  88     return s;
  89 }
  90
  91 static inline uint64_t tswap64(uint64_t s)
  92 {
  93     return s;
  94 }
  95
  96 static inline void tswap16s(uint16_t *s)
  97 {
  98 }
  99
 100 static inline void tswap32s(uint32_t *s)
 101 {
 102 }
 103
 104 static inline void tswap64s(uint64_t *s)
 105 {
 106 }
 107
 108 #endif
 109
 110 #if TARGET_LONG_SIZE == 4
 111 #define tswapl(s) tswap32(s)
 112 #define tswapls(s) tswap32s((uint32_t *)(s))
 113 #define bswaptls(s) bswap32s(s)
 114 #else
 115 #define tswapl(s) tswap64(s)
 116 #define tswapls(s) tswap64s((uint64_t *)(s))
 117 #define bswaptls(s) bswap64s(s)
 118 #endif
 119
 120 typedef union {
 121     float32 f;
 122     uint32_t l;
 123 } CPU_FloatU;
 124
 125 /* NOTE: arm FPA is horrible as double 32 bit words are stored in big
 126    endian ! */
 127 typedef union {
 128     float64 d;
 129 #if defined(WORDS_BIGENDIAN) \
 130     || (defined(__arm__) && !defined(__VFP_FP__) && !defined(CONFIG_SOFTFLOAT))
 131     struct {
 132         uint32_t upper;
 133         uint32_t lower;
 134     } l;
 135 #else
 136     struct {
 137         uint32_t lower;
 138         uint32_t upper;
 139     } l;
 140 #endif
 141     uint64_t ll;
 142 } CPU_DoubleU;
 143
 144 #ifdef TARGET_SPARC
 145 typedef union {
 146     float128 q;
 147 #if defined(WORDS_BIGENDIAN) \
 148     || (defined(__arm__) && !defined(__VFP_FP__) && !defined(CONFIG_SOFTFLOAT))
 149     struct {
 150         uint32_t upmost;
 151         uint32_t upper;
 152         uint32_t lower;
 153         uint32_t lowest;
 154     } l;
 155     struct {
 156         uint64_t upper;
 157         uint64_t lower;
 158     } ll;
 159 #else
 160     struct {
 161         uint32_t lowest;
 162         uint32_t lower;
 163         uint32_t upper;
 164         uint32_t upmost;
 165     } l;
 166     struct {
 167         uint64_t lower;
 168         uint64_t upper;
 169     } ll;
 170 #endif
 171 } CPU_QuadU;
 172 #endif
 173
 174 /* CPU memory access without any memory or io remapping */
 175
 176 /*
 177  * the generic syntax for the memory accesses is:
 178  *
 179  * load: ld{type}{sign}{size}{endian}_{access_type}(ptr)
 180  *
 181  * store: st{type}{size}{endian}_{access_type}(ptr, val)
 182  *
 183  * type is:
 184  * (empty): integer access
 185  *   f    : float access
 186  *
 187  * sign is:
 188  * (empty): for floats or 32 bit size
 189  *   u    : unsigned
 190  *   s    : signed
 191  *
 192  * size is:
 193  *   b: 8 bits
 194  *   w: 16 bits
 195  *   l: 32 bits
 196  *   q: 64 bits
 197  *
 198  * endian is:
 199  * (empty): target cpu endianness or 8 bit access
 200  *   r    : reversed target cpu endianness (not implemented yet)
 201  *   be   : big endian (not implemented yet)
 202  *   le   : little endian (not implemented yet)
 203  *
 204  * access_type is:
 205  *   raw    : host memory access
 206  *   user   : user mode access using soft MMU
 207  *   kernel : kernel mode access using soft MMU
 208  */
 209 static inline int ldub_p(void *ptr)
 210 {
 211     return *(uint8_t *)ptr;
 212 }
 213
 214 static inline int ldsb_p(void *ptr)
 215 {
 216     return *(int8_t *)ptr;
 217 }
 218
 219 static inline void stb_p(void *ptr, int v)
 220 {
 221     *(uint8_t *)ptr = v;
 222 }
 223
 224 /* NOTE: on arm, putting 2 in /proc/sys/debug/alignment so that the
 225    kernel handles unaligned load/stores may give better results, but
 226    it is a system wide setting : bad */
 227 #if defined(WORDS_BIGENDIAN) || defined(WORDS_ALIGNED)
 228
 229 /* conservative code for little endian unaligned accesses */
 230 static inline int lduw_le_p(void *ptr)
 231 {
 232 #ifdef __powerpc__
 233     int val;
 234     __asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (ptr));
 235     return val;
 236 #else
 237     uint8_t *p = ptr;
 238     return p[0] | (p[1] << 8);
 239 #endif
 240 }
 241
 242 static inline int ldsw_le_p(void *ptr)
 243 {
 244 #ifdef __powerpc__
 245     int val;
 246     __asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (ptr));
 247     return (int16_t)val;
 248 #else
 249     uint8_t *p = ptr;
 250     return (int16_t)(p[0] | (p[1] << 8));
 251 #endif
 252 }
 253
 254 static inline int ldl_le_p(void *ptr)
 255 {
 256 #ifdef __powerpc__
 257     int val;
 258     __asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (val) : "r" (ptr));
 259     return val;
 260 #else
 261     uint8_t *p = ptr;
 262     return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
 263 #endif
 264 }
 265
 266 static inline uint64_t ldq_le_p(void *ptr)
 267 {
 268     uint8_t *p = ptr;
 269     uint32_t v1, v2;
 270     v1 = ldl_le_p(p);
 271     v2 = ldl_le_p(p + 4);
 272     return v1 | ((uint64_t)v2 << 32);
 273 }
 274
 275 static inline void stw_le_p(void *ptr, int v)
 276 {
 277 #ifdef __powerpc__
 278     __asm__ __volatile__ ("sthbrx %1,0,%2" : "=m" (*(uint16_t *)ptr) : "r" (v), "r" (ptr));
 279 #else
 280     uint8_t *p = ptr;
 281     p[0] = v;
 282     p[1] = v >> 8;
 283 #endif
 284 }
 285
 286 static inline void stl_le_p(void *ptr, int v)
 287 {
 288 #ifdef __powerpc__
 289     __asm__ __volatile__ ("stwbrx %1,0,%2" : "=m" (*(uint32_t *)ptr) : "r" (v), "r" (ptr));
 290 #else
 291     uint8_t *p = ptr;
 292     p[0] = v;
 293     p[1] = v >> 8;
 294     p[2] = v >> 16;
 295     p[3] = v >> 24;
 296 #endif
 297 }
 298
 299 static inline void stq_le_p(void *ptr, uint64_t v)
 300 {
 301     uint8_t *p = ptr;
 302     stl_le_p(p, (uint32_t)v);
 303     stl_le_p(p + 4, v >> 32);
 304 }
 305
 306 /* float access */
 307
 308 static inline float32 ldfl_le_p(void *ptr)
 309 {
 310     union {
 311         float32 f;
 312         uint32_t i;
 313     } u;
 314     u.i = ldl_le_p(ptr);
 315     return u.f;
 316 }
 317
 318 static inline void stfl_le_p(void *ptr, float32 v)
 319 {
 320     union {
 321         float32 f;
 322         uint32_t i;
 323     } u;
 324     u.f = v;
 325     stl_le_p(ptr, u.i);
 326 }
 327
 328 static inline float64 ldfq_le_p(void *ptr)
 329 {
 330     CPU_DoubleU u;
 331     u.l.lower = ldl_le_p(ptr);
 332     u.l.upper = ldl_le_p(ptr + 4);
 333     return u.d;
 334 }
 335
 336 static inline void stfq_le_p(void *ptr, float64 v)
 337 {
 338     CPU_DoubleU u;
 339     u.d = v;
 340     stl_le_p(ptr, u.l.lower);
 341     stl_le_p(ptr + 4, u.l.upper);
 342 }
 343
 344 #else
 345
 346 static inline int lduw_le_p(void *ptr)
 347 {
 348     return *(uint16_t *)ptr;
 349 }
 350
 351 static inline int ldsw_le_p(void *ptr)
 352 {
 353     return *(int16_t *)ptr;
 354 }
 355
 356 static inline int ldl_le_p(void *ptr)
 357 {
 358     return *(uint32_t *)ptr;
 359 }
 360
 361 static inline uint64_t ldq_le_p(void *ptr)
 362 {
 363     return *(uint64_t *)ptr;
 364 }
 365
 366 static inline void stw_le_p(void *ptr, int v)
 367 {
 368     *(uint16_t *)ptr = v;
 369 }
 370
 371 static inline void stl_le_p(void *ptr, int v)
 372 {
 373     *(uint32_t *)ptr = v;
 374 }
 375
 376 static inline void stq_le_p(void *ptr, uint64_t v)
 377 {
 378     *(uint64_t *)ptr = v;
 379 }
 380
 381 /* float access */
 382
 383 static inline float32 ldfl_le_p(void *ptr)
 384 {
 385     return *(float32 *)ptr;
 386 }
 387
 388 static inline float64 ldfq_le_p(void *ptr)
 389 {
 390     return *(float64 *)ptr;
 391 }
 392
 393 static inline void stfl_le_p(void *ptr, float32 v)
 394 {
 395     *(float32 *)ptr = v;
 396 }
 397
 398 static inline void stfq_le_p(void *ptr, float64 v)
 399 {
 400     *(float64 *)ptr = v;
 401 }
 402 #endif
 403
 404 #if !defined(WORDS_BIGENDIAN) || defined(WORDS_ALIGNED)
 405
 406 static inline int lduw_be_p(void *ptr)
 407 {
 408 #if defined(__i386__)
 409     int val;
 410     asm volatile ("movzwl %1, %0\n"
 411                   "xchgb %b0, %h0\n"
 412                   : "=q" (val)
 413                   : "m" (*(uint16_t *)ptr));
 414     return val;
 415 #else
 416     uint8_t *b = (uint8_t *) ptr;
 417     return ((b[0] << 8) | b[1]);
 418 #endif
 419 }
 420
 421 static inline int ldsw_be_p(void *ptr)
 422 {
 423 #if defined(__i386__)
 424     int val;
 425     asm volatile ("movzwl %1, %0\n"
 426                   "xchgb %b0, %h0\n"
 427                   : "=q" (val)
 428                   : "m" (*(uint16_t *)ptr));
 429     return (int16_t)val;
 430 #else
 431     uint8_t *b = (uint8_t *) ptr;
 432     return (int16_t)((b[0] << 8) | b[1]);
 433 #endif
 434 }
 435
 436 static inline int ldl_be_p(void *ptr)
 437 {
 438 #if defined(__i386__) || defined(__x86_64__)
 439     int val;
 440     asm volatile ("movl %1, %0\n"
 441                   "bswap %0\n"
 442                   : "=r" (val)
 443                   : "m" (*(uint32_t *)ptr));
 444     return val;
 445 #else
 446     uint8_t *b = (uint8_t *) ptr;
 447     return (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | b[3];
 448 #endif
 449 }
 450
 451 static inline uint64_t ldq_be_p(void *ptr)
 452 {
 453     uint32_t a,b;
 454     a = ldl_be_p(ptr);
 455     b = ldl_be_p((uint8_t *)ptr + 4);
 456     return (((uint64_t)a<<32)|b);
 457 }
 458
 459 static inline void stw_be_p(void *ptr, int v)
 460 {
 461 #if defined(__i386__)
 462     asm volatile ("xchgb %b0, %h0\n"
 463                   "movw %w0, %1\n"
 464                   : "=q" (v)
 465                   : "m" (*(uint16_t *)ptr), "0" (v));
 466 #else
 467     uint8_t *d = (uint8_t *) ptr;
 468     d[0] = v >> 8;
 469     d[1] = v;
 470 #endif
 471 }
 472
 473 static inline void stl_be_p(void *ptr, int v)
 474 {
 475 #if defined(__i386__) || defined(__x86_64__)
 476     asm volatile ("bswap %0\n"
 477                   "movl %0, %1\n"
 478                   : "=r" (v)
 479                   : "m" (*(uint32_t *)ptr), "0" (v));
 480 #else
 481     uint8_t *d = (uint8_t *) ptr;
 482     d[0] = v >> 24;
 483     d[1] = v >> 16;
 484     d[2] = v >> 8;
 485     d[3] = v;
 486 #endif
 487 }
 488
 489 static inline void stq_be_p(void *ptr, uint64_t v)
 490 {
 491     stl_be_p(ptr, v >> 32);
 492     stl_be_p((uint8_t *)ptr + 4, v);
 493 }
 494
 495 /* float access */
 496
 497 static inline float32 ldfl_be_p(void *ptr)
 498 {
 499     union {
 500         float32 f;
 501         uint32_t i;
 502     } u;
 503     u.i = ldl_be_p(ptr);
 504     return u.f;
 505 }
 506
 507 static inline void stfl_be_p(void *ptr, float32 v)
 508 {
 509     union {
 510         float32 f;
 511         uint32_t i;
 512     } u;
 513     u.f = v;
 514     stl_be_p(ptr, u.i);
 515 }
 516
 517 static inline float64 ldfq_be_p(void *ptr)
 518 {
 519     CPU_DoubleU u;
 520     u.l.upper = ldl_be_p(ptr);
 521     u.l.lower = ldl_be_p((uint8_t *)ptr + 4);
 522     return u.d;
 523 }
 524
 525 static inline void stfq_be_p(void *ptr, float64 v)
 526 {
 527     CPU_DoubleU u;
 528     u.d = v;
 529     stl_be_p(ptr, u.l.upper);
 530     stl_be_p((uint8_t *)ptr + 4, u.l.lower);
 531 }
 532
 533 #else
 534
 535 static inline int lduw_be_p(void *ptr)
 536 {
 537     return *(uint16_t *)ptr;
 538 }
 539
 540 static inline int ldsw_be_p(void *ptr)
 541 {
 542     return *(int16_t *)ptr;
 543 }
 544
 545 static inline int ldl_be_p(void *ptr)
 546 {
 547     return *(uint32_t *)ptr;
 548 }
 549
 550 static inline uint64_t ldq_be_p(void *ptr)
 551 {
 552     return *(uint64_t *)ptr;
 553 }
 554
 555 static inline void stw_be_p(void *ptr, int v)
 556 {
 557     *(uint16_t *)ptr = v;
 558 }
 559
 560 static inline void stl_be_p(void *ptr, int v)
 561 {
 562     *(uint32_t *)ptr = v;
 563 }
 564
 565 static inline void stq_be_p(void *ptr, uint64_t v)
 566 {
 567     *(uint64_t *)ptr = v;
 568 }
 569
 570 /* float access */
 571
 572 static inline float32 ldfl_be_p(void *ptr)
 573 {
 574     return *(float32 *)ptr;
 575 }
 576
 577 static inline float64 ldfq_be_p(void *ptr)
 578 {
 579     return *(float64 *)ptr;
 580 }
 581
 582 static inline void stfl_be_p(void *ptr, float32 v)
 583 {
 584     *(float32 *)ptr = v;
 585 }
 586
 587 static inline void stfq_be_p(void *ptr, float64 v)
 588 {
 589     *(float64 *)ptr = v;
 590 }
 591
 592 #endif
 593
 594 /* target CPU memory access functions */
 595 #if defined(TARGET_WORDS_BIGENDIAN)
 596 #define lduw_p(p) lduw_be_p(p)
 597 #define ldsw_p(p) ldsw_be_p(p)
 598 #define ldl_p(p) ldl_be_p(p)
 599 #define ldq_p(p) ldq_be_p(p)
 600 #define ldfl_p(p) ldfl_be_p(p)
 601 #define ldfq_p(p) ldfq_be_p(p)
 602 #define stw_p(p, v) stw_be_p(p, v)
 603 #define stl_p(p, v) stl_be_p(p, v)
 604 #define stq_p(p, v) stq_be_p(p, v)
 605 #define stfl_p(p, v) stfl_be_p(p, v)
 606 #define stfq_p(p, v) stfq_be_p(p, v)
 607 #else
 608 #define lduw_p(p) lduw_le_p(p)
 609 #define ldsw_p(p) ldsw_le_p(p)
 610 #define ldl_p(p) ldl_le_p(p)
 611 #define ldq_p(p) ldq_le_p(p)
 612 #define ldfl_p(p) ldfl_le_p(p)
 613 #define ldfq_p(p) ldfq_le_p(p)
 614 #define stw_p(p, v) stw_le_p(p, v)
 615 #define stl_p(p, v) stl_le_p(p, v)
 616 #define stq_p(p, v) stq_le_p(p, v)
 617 #define stfl_p(p, v) stfl_le_p(p, v)
 618 #define stfq_p(p, v) stfq_le_p(p, v)
 619 #endif
 620
 621 /* MMU memory access macros */
 622
 623 #if defined(CONFIG_USER_ONLY)
 624 /* On some host systems the guest address space is reserved on the host.
 625  * This allows the guest address space to be offset to a convenient location.
 626  */
 627 //#define GUEST_BASE 0x20000000
 628 #define GUEST_BASE 0
 629
 630 /* All direct uses of g2h and h2g need to go away for usermode softmmu.  */
 631 #define g2h(x) ((void *)((unsigned long)(x) + GUEST_BASE))
 632 #define h2g(x) ((target_ulong)((unsigned long)(x) - GUEST_BASE))
 633
 634 #define saddr(x) g2h(x)
 635 #define laddr(x) g2h(x)
 636
 637 #else /* !CONFIG_USER_ONLY */
 638 /* NOTE: we use double casts if pointers and target_ulong have
 639    different sizes */
 640 #define saddr(x) (uint8_t *)(long)(x)
 641 #define laddr(x) (uint8_t *)(long)(x)
 642 #endif
 643
 644 #define ldub_raw(p) ldub_p(laddr((p)))
 645 #define ldsb_raw(p) ldsb_p(laddr((p)))
 646 #define lduw_raw(p) lduw_p(laddr((p)))
 647 #define ldsw_raw(p) ldsw_p(laddr((p)))
 648 #define ldl_raw(p) ldl_p(laddr((p)))
 649 #define ldq_raw(p) ldq_p(laddr((p)))
 650 #define ldfl_raw(p) ldfl_p(laddr((p)))
 651 #define ldfq_raw(p) ldfq_p(laddr((p)))
 652 #define stb_raw(p, v) stb_p(saddr((p)), v)
 653 #define stw_raw(p, v) stw_p(saddr((p)), v)
 654 #define stl_raw(p, v) stl_p(saddr((p)), v)
 655 #define stq_raw(p, v) stq_p(saddr((p)), v)
 656 #define stfl_raw(p, v) stfl_p(saddr((p)), v)
 657 #define stfq_raw(p, v) stfq_p(saddr((p)), v)
 658
 659
 660 #if defined(CONFIG_USER_ONLY)
 661
 662 /* if user mode, no other memory access functions */
 663 #define ldub(p) ldub_raw(p)
 664 #define ldsb(p) ldsb_raw(p)
 665 #define lduw(p) lduw_raw(p)
 666 #define ldsw(p) ldsw_raw(p)
 667 #define ldl(p) ldl_raw(p)
 668 #define ldq(p) ldq_raw(p)
 669 #define ldfl(p) ldfl_raw(p)
 670 #define ldfq(p) ldfq_raw(p)
 671 #define stb(p, v) stb_raw(p, v)
 672 #define stw(p, v) stw_raw(p, v)
 673 #define stl(p, v) stl_raw(p, v)
 674 #define stq(p, v) stq_raw(p, v)
 675 #define stfl(p, v) stfl_raw(p, v)
 676 #define stfq(p, v) stfq_raw(p, v)
 677
 678 #define ldub_code(p) ldub_raw(p)
 679 #define ldsb_code(p) ldsb_raw(p)
 680 #define lduw_code(p) lduw_raw(p)
 681 #define ldsw_code(p) ldsw_raw(p)
 682 #define ldl_code(p) ldl_raw(p)
 683 #define ldq_code(p) ldq_raw(p)
 684
 685 #define ldub_kernel(p) ldub_raw(p)
 686 #define ldsb_kernel(p) ldsb_raw(p)
 687 #define lduw_kernel(p) lduw_raw(p)
 688 #define ldsw_kernel(p) ldsw_raw(p)
 689 #define ldl_kernel(p) ldl_raw(p)
 690 #define ldq_kernel(p) ldq_raw(p)
 691 #define ldfl_kernel(p) ldfl_raw(p)
 692 #define ldfq_kernel(p) ldfq_raw(p)
 693 #define stb_kernel(p, v) stb_raw(p, v)
 694 #define stw_kernel(p, v) stw_raw(p, v)
 695 #define stl_kernel(p, v) stl_raw(p, v)
 696 #define stq_kernel(p, v) stq_raw(p, v)
 697 #define stfl_kernel(p, v) stfl_raw(p, v)
 698 #define stfq_kernel(p, vt) stfq_raw(p, v)
 699
 700 #endif /* defined(CONFIG_USER_ONLY) */
 701
 702 /* page related stuff */
 703
 704 #define TARGET_PAGE_SIZE (1 << TARGET_PAGE_BITS)
 705 #define TARGET_PAGE_MASK ~(TARGET_PAGE_SIZE - 1)
 706 #define TARGET_PAGE_ALIGN(addr) (((addr) + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK)
 707
 708 /* ??? These should be the larger of unsigned long and target_ulong.  */
 709 extern unsigned long qemu_real_host_page_size;
 710 extern unsigned long qemu_host_page_bits;
 711 extern unsigned long qemu_host_page_size;
 712 extern unsigned long qemu_host_page_mask;
 713
 714 #define HOST_PAGE_ALIGN(addr) (((addr) + qemu_host_page_size - 1) & qemu_host_page_mask)
 715
 716 /* same as PROT_xxx */
 717 #define PAGE_READ      0x0001
 718 #define PAGE_WRITE     0x0002
 719 #define PAGE_EXEC      0x0004
 720 #define PAGE_BITS      (PAGE_READ | PAGE_WRITE | PAGE_EXEC)
 721 #define PAGE_VALID     0x0008
 722 /* original state of the write flag (used when tracking self-modifying
 723    code */
 724 #define PAGE_WRITE_ORG 0x0010
 725 #define PAGE_RESERVED  0x0020
 726
 727 void page_dump(FILE *f);
 728 int page_get_flags(target_ulong address);
 729 void page_set_flags(target_ulong start, target_ulong end, int flags);
 730 int page_check_range(target_ulong start, target_ulong len, int flags);
 731
 732 void cpu_exec_init_all(unsigned long tb_size);
 733 CPUState *cpu_copy(CPUState *env);
 734
 735 void cpu_dump_state(CPUState *env, FILE *f,
 736                     int (*cpu_fprintf)(FILE *f, const char *fmt, ...),
 737                     int flags);
 738 void cpu_dump_statistics (CPUState *env, FILE *f,
 739                           int (*cpu_fprintf)(FILE *f, const char *fmt, ...),
 740                           int flags);
 741
 742 void cpu_abort(CPUState *env, const char *fmt, ...)
 743     __attribute__ ((__format__ (__printf__, 2, 3)))
 744     __attribute__ ((__noreturn__));
 745 extern CPUState *first_cpu;
 746 extern CPUState *cpu_single_env;
 747 extern int64_t qemu_icount;
 748 extern int use_icount;
 749
 750 #define CPU_INTERRUPT_EXIT   0x01 /* wants exit from main loop */
 751 #define CPU_INTERRUPT_HARD   0x02 /* hardware interrupt pending */
 752 #define CPU_INTERRUPT_EXITTB 0x04 /* exit the current TB (use for x86 a20 case) */
 753 #define CPU_INTERRUPT_TIMER  0x08 /* internal timer exception pending */
 754 #define CPU_INTERRUPT_FIQ    0x10 /* Fast interrupt pending.  */
 755 #define CPU_INTERRUPT_HALT   0x20 /* CPU halt wanted */
 756 #define CPU_INTERRUPT_SMI    0x40 /* (x86 only) SMI interrupt pending */
 757 #define CPU_INTERRUPT_DEBUG  0x80 /* Debug event occured.  */
 758 #define CPU_INTERRUPT_VIRQ   0x100 /* virtual interrupt pending.  */
 759 #define CPU_INTERRUPT_NMI    0x200 /* NMI pending. */
 760
 761 void cpu_interrupt(CPUState *s, int mask);
 762 void cpu_reset_interrupt(CPUState *env, int mask);
 763
 764 /* Breakpoint/watchpoint flags */
 765 #define BP_MEM_READ           0x01
 766 #define BP_MEM_WRITE          0x02
 767 #define BP_MEM_ACCESS         (BP_MEM_READ | BP_MEM_WRITE)
 768 #define BP_STOP_BEFORE_ACCESS 0x04
 769 #define BP_WATCHPOINT_HIT     0x08
 770 #define BP_GDB                0x10
 771 #define BP_CPU                0x20
 772
 773 int cpu_breakpoint_insert(CPUState *env, target_ulong pc, int flags,
 774                           CPUBreakpoint **breakpoint);
 775 int cpu_breakpoint_remove(CPUState *env, target_ulong pc, int flags);
 776 void cpu_breakpoint_remove_by_ref(CPUState *env, CPUBreakpoint *breakpoint);
 777 void cpu_breakpoint_remove_all(CPUState *env, int mask);
 778 int cpu_watchpoint_insert(CPUState *env, target_ulong addr, target_ulong len,
 779                           int flags, CPUWatchpoint **watchpoint);
 780 int cpu_watchpoint_remove(CPUState *env, target_ulong addr,
 781                           target_ulong len, int flags);
 782 void cpu_watchpoint_remove_by_ref(CPUState *env, CPUWatchpoint *watchpoint);
 783 void cpu_watchpoint_remove_all(CPUState *env, int mask);
 784
 785 #define SSTEP_ENABLE  0x1  /* Enable simulated HW single stepping */
 786 #define SSTEP_NOIRQ   0x2  /* Do not use IRQ while single stepping */
 787 #define SSTEP_NOTIMER 0x4  /* Do not Timers while single stepping */
 788
 789 void cpu_single_step(CPUState *env, int enabled);
 790 void cpu_reset(CPUState *s);
 791
 792 /* Return the physical page corresponding to a virtual one. Use it
 793    only for debugging because no protection checks are done. Return -1
 794    if no page found. */
 795 target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr);
 796
 797 #define CPU_LOG_TB_OUT_ASM (1 << 0)
 798 #define CPU_LOG_TB_IN_ASM  (1 << 1)
 799 #define CPU_LOG_TB_OP      (1 << 2)
 800 #define CPU_LOG_TB_OP_OPT  (1 << 3)
 801 #define CPU_LOG_INT        (1 << 4)
 802 #define CPU_LOG_EXEC       (1 << 5)
 803 #define CPU_LOG_PCALL      (1 << 6)
 804 #define CPU_LOG_IOPORT     (1 << 7)
 805 #define CPU_LOG_TB_CPU     (1 << 8)
 806
 807 /* define log items */
 808 typedef struct CPULogItem {
 809     int mask;
 810     const char *name;
 811     const char *help;
 812 } CPULogItem;
 813
 814 extern const CPULogItem cpu_log_items[];
 815
 816 void cpu_set_log(int log_flags);
 817 void cpu_set_log_filename(const char *filename);
 818 int cpu_str_to_log_mask(const char *str);
 819
 820 /* IO ports API */
 821
 822 /* NOTE: as these functions may be even used when there is an isa
 823    brige on non x86 targets, we always defined them */
 824 #ifndef NO_CPU_IO_DEFS
 825 void cpu_outb(CPUState *env, int addr, int val);
 826 void cpu_outw(CPUState *env, int addr, int val);
 827 void cpu_outl(CPUState *env, int addr, int val);
 828 int cpu_inb(CPUState *env, int addr);
 829 int cpu_inw(CPUState *env, int addr);
 830 int cpu_inl(CPUState *env, int addr);
 831 #endif
 832
 833 /* address in the RAM (different from a physical address) */
 834 #ifdef USE_KQEMU
 835 typedef uint32_t ram_addr_t;
 836 #else
 837 typedef unsigned long ram_addr_t;
 838 #endif
 839
 840 /* memory API */
 841
 842 extern ram_addr_t phys_ram_size;
 843 extern int phys_ram_fd;
 844 extern uint8_t *phys_ram_base;
 845 extern uint8_t *phys_ram_dirty;
 846 extern ram_addr_t ram_size;
 847
 848 /* physical memory access */
 849
 850 /* MMIO pages are identified by a combination of an IO device index and
 851    3 flags.  The ROMD code stores the page ram offset in iotlb entry,
 852    so only a limited number of ids are avaiable.  */
 853
 854 #define IO_MEM_SHIFT       3
 855 #define IO_MEM_NB_ENTRIES  (1 << (TARGET_PAGE_BITS  - IO_MEM_SHIFT))
 856
 857 #define IO_MEM_RAM         (0 << IO_MEM_SHIFT) /* hardcoded offset */
 858 #define IO_MEM_ROM         (1 << IO_MEM_SHIFT) /* hardcoded offset */
 859 #define IO_MEM_UNASSIGNED  (2 << IO_MEM_SHIFT)
 860 #define IO_MEM_NOTDIRTY    (3 << IO_MEM_SHIFT)
 861
 862 /* Acts like a ROM when read and like a device when written.  */
 863 #define IO_MEM_ROMD        (1)
 864 #define IO_MEM_SUBPAGE     (2)
 865 #define IO_MEM_SUBWIDTH    (4)
 866
 867 /* Flags stored in the low bits of the TLB virtual address.  These are
 868    defined so that fast path ram access is all zeros.  */
 869 /* Zero if TLB entry is valid.  */
 870 #define TLB_INVALID_MASK   (1 << 3)
 871 /* Set if TLB entry references a clean RAM page.  The iotlb entry will
 872    contain the page physical address.  */
 873 #define TLB_NOTDIRTY    (1 << 4)
 874 /* Set if TLB entry is an IO callback.  */
 875 #define TLB_MMIO        (1 << 5)
 876
 877 typedef void CPUWriteMemoryFunc(void *opaque, target_phys_addr_t addr, uint32_t value);
 878 typedef uint32_t CPUReadMemoryFunc(void *opaque, target_phys_addr_t addr);
 879
 880 void cpu_register_physical_memory(target_phys_addr_t start_addr,
 881                                   ram_addr_t size,
 882                                   ram_addr_t phys_offset);
 883 ram_addr_t cpu_get_physical_page_desc(target_phys_addr_t addr);
 884 ram_addr_t qemu_ram_alloc(ram_addr_t);
 885 void qemu_ram_free(ram_addr_t addr);
 886 int cpu_register_io_memory(int io_index,
 887                            CPUReadMemoryFunc **mem_read,
 888                            CPUWriteMemoryFunc **mem_write,
 889                            void *opaque);
 890 CPUWriteMemoryFunc **cpu_get_io_memory_write(int io_index);
 891 CPUReadMemoryFunc **cpu_get_io_memory_read(int io_index);
 892
 893 void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,
 894                             int len, int is_write);
 895 static inline void cpu_physical_memory_read(target_phys_addr_t addr,
 896                                             uint8_t *buf, int len)
 897 {
 898     cpu_physical_memory_rw(addr, buf, len, 0);
 899 }
 900 static inline void cpu_physical_memory_write(target_phys_addr_t addr,
 901                                              const uint8_t *buf, int len)
 902 {
 903     cpu_physical_memory_rw(addr, (uint8_t *)buf, len, 1);
 904 }
 905 uint32_t ldub_phys(target_phys_addr_t addr);
 906 uint32_t lduw_phys(target_phys_addr_t addr);
 907 uint32_t ldl_phys(target_phys_addr_t addr);
 908 uint64_t ldq_phys(target_phys_addr_t addr);
 909 void stl_phys_notdirty(target_phys_addr_t addr, uint32_t val);
 910 void stq_phys_notdirty(target_phys_addr_t addr, uint64_t val);
 911 void stb_phys(target_phys_addr_t addr, uint32_t val);
 912 void stw_phys(target_phys_addr_t addr, uint32_t val);
 913 void stl_phys(target_phys_addr_t addr, uint32_t val);
 914 void stq_phys(target_phys_addr_t addr, uint64_t val);
 915
 916 void cpu_physical_memory_write_rom(target_phys_addr_t addr,
 917                                    const uint8_t *buf, int len);
 918 int cpu_memory_rw_debug(CPUState *env, target_ulong addr,
 919                         uint8_t *buf, int len, int is_write);
 920
 921 #define VGA_DIRTY_FLAG       0x01
 922 #define CODE_DIRTY_FLAG      0x02
 923 #define KQEMU_DIRTY_FLAG     0x04
 924 #define MIGRATION_DIRTY_FLAG 0x08
 925
 926 /* read dirty bit (return 0 or 1) */
 927 static inline int cpu_physical_memory_is_dirty(ram_addr_t addr)
 928 {
 929     return phys_ram_dirty[addr >> TARGET_PAGE_BITS] == 0xff;
 930 }
 931
 932 static inline int cpu_physical_memory_get_dirty(ram_addr_t addr,
 933                                                 int dirty_flags)
 934 {
 935     return phys_ram_dirty[addr >> TARGET_PAGE_BITS] & dirty_flags;
 936 }
 937
 938 static inline void cpu_physical_memory_set_dirty(ram_addr_t addr)
 939 {
 940     phys_ram_dirty[addr >> TARGET_PAGE_BITS] = 0xff;
 941 }
 942
 943 void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
 944                                      int dirty_flags);
 945 void cpu_tlb_update_dirty(CPUState *env);
 946
 947 int cpu_physical_memory_set_dirty_tracking(int enable);
 948
 949 int cpu_physical_memory_get_dirty_tracking(void);
 950
 951 void dump_exec_info(FILE *f,
 952                     int (*cpu_fprintf)(FILE *f, const char *fmt, ...));
 953
 954 /*******************************************/
 955 /* host CPU ticks (if available) */
 956
 957 #if defined(__powerpc__)
 958
 959 static inline uint32_t get_tbl(void)
 960 {
 961     uint32_t tbl;
 962     asm volatile("mftb %0" : "=r" (tbl));
 963     return tbl;
 964 }
 965
 966 static inline uint32_t get_tbu(void)
 967 {
 968         uint32_t tbl;
 969         asm volatile("mftbu %0" : "=r" (tbl));
 970         return tbl;
 971 }
 972
 973 static inline int64_t cpu_get_real_ticks(void)
 974 {
 975     uint32_t l, h, h1;
 976     /* NOTE: we test if wrapping has occurred */
 977     do {
 978         h = get_tbu();
 979         l = get_tbl();
 980         h1 = get_tbu();
 981     } while (h != h1);
 982     return ((int64_t)h << 32) | l;
 983 }
 984
 985 #elif defined(__i386__)
 986
 987 static inline int64_t cpu_get_real_ticks(void)
 988 {
 989     int64_t val;
 990     asm volatile ("rdtsc" : "=A" (val));
 991     return val;
 992 }
 993
 994 #elif defined(__x86_64__)
 995
 996 static inline int64_t cpu_get_real_ticks(void)
 997 {
 998     uint32_t low,high;
 999     int64_t val;
1000     asm volatile("rdtsc" : "=a" (low), "=d" (high));
1001     val = high;
1002     val <<= 32;
1003     val |= low;
1004     return val;
1005 }
1006
1007 #elif defined(__hppa__)
1008
1009 static inline int64_t cpu_get_real_ticks(void)
1010 {
1011     int val;
1012     asm volatile ("mfctl %%cr16, %0" : "=r"(val));
1013     return val;
1014 }
1015
1016 #elif defined(__ia64)
1017
1018 static inline int64_t cpu_get_real_ticks(void)
1019 {
1020         int64_t val;
1021         asm volatile ("mov %0 = ar.itc" : "=r"(val) :: "memory");
1022         return val;
1023 }
1024
1025 #elif defined(__s390__)
1026
1027 static inline int64_t cpu_get_real_ticks(void)
1028 {
1029     int64_t val;
1030     asm volatile("stck 0(%1)" : "=m" (val) : "a" (&val) : "cc");
1031     return val;
1032 }
1033
1034 #elif defined(__sparc_v8plus__) || defined(__sparc_v8plusa__) || defined(__sparc_v9__)
1035
1036 static inline int64_t cpu_get_real_ticks (void)
1037 {
1038 #if     defined(_LP64)
1039         uint64_t        rval;
1040         asm volatile("rd %%tick,%0" : "=r"(rval));
1041         return rval;
1042 #else
1043         union {
1044                 uint64_t i64;
1045                 struct {
1046                         uint32_t high;
1047                         uint32_t low;
1048                 }       i32;
1049         } rval;
1050         asm volatile("rd %%tick,%1; srlx %1,32,%0"
1051                 : "=r"(rval.i32.high), "=r"(rval.i32.low));
1052         return rval.i64;
1053 #endif
1054 }
1055
1056 #elif defined(__mips__)
1057
1058 static inline int64_t cpu_get_real_ticks(void)
1059 {
1060 #if __mips_isa_rev >= 2
1061     uint32_t count;
1062     static uint32_t cyc_per_count = 0;
1063
1064     if (!cyc_per_count)
1065         __asm__ __volatile__("rdhwr %0, $3" : "=r" (cyc_per_count));
1066
1067     __asm__ __volatile__("rdhwr %1, $2" : "=r" (count));
1068     return (int64_t)(count * cyc_per_count);
1069 #else
1070     /* FIXME */
1071     static int64_t ticks = 0;
1072     return ticks++;
1073 #endif
1074 }
1075
1076 #else
1077 /* The host CPU doesn't have an easily accessible cycle counter.
1078    Just return a monotonically increasing value.  This will be
1079    totally wrong, but hopefully better than nothing.  */
1080 static inline int64_t cpu_get_real_ticks (void)
1081 {
1082     static int64_t ticks = 0;
1083     return ticks++;
1084 }
1085 #endif
1086
1087 /* profiling */
1088 #ifdef CONFIG_PROFILER
1089 static inline int64_t profile_getclock(void)
1090 {
1091     return cpu_get_real_ticks();
1092 }
1093
1094 extern int64_t kqemu_time, kqemu_time_start;
1095 extern int64_t qemu_time, qemu_time_start;
1096 extern int64_t tlb_flush_time;
1097 extern int64_t kqemu_exec_count;
1098 extern int64_t dev_time;
1099 extern int64_t kqemu_ret_int_count;
1100 extern int64_t kqemu_ret_excp_count;
1101 extern int64_t kqemu_ret_intr_count;
1102 #endif
1103
1104 #endif /* CPU_ALL_H */