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., 51 Franklin Street, Fifth Floor, Boston MA  02110-1301 USA
  19  */
  20 #ifndef CPU_ALL_H
  21 #define CPU_ALL_H
  22
  23 #include "qemu-common.h"
  24 #include "cpu-common.h"
  25
  26 /* some important defines:
  27  *
  28  * WORDS_ALIGNED : if defined, the host cpu can only make word aligned
  29  * memory accesses.
  30  *
  31  * WORDS_BIGENDIAN : if defined, the host cpu is big endian and
  32  * otherwise little endian.
  33  *
  34  * (TARGET_WORDS_ALIGNED : same for target cpu (not supported yet))
  35  *
  36  * TARGET_WORDS_BIGENDIAN : same for target cpu
  37  */
  38
  39 #include "softfloat.h"
  40
  41 #if defined(WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
  42 #define BSWAP_NEEDED
  43 #endif
  44
  45 #ifdef BSWAP_NEEDED
  46
  47 static inline uint16_t tswap16(uint16_t s)
  48 {
  49     return bswap16(s);
  50 }
  51
  52 static inline uint32_t tswap32(uint32_t s)
  53 {
  54     return bswap32(s);
  55 }
  56
  57 static inline uint64_t tswap64(uint64_t s)
  58 {
  59     return bswap64(s);
  60 }
  61
  62 static inline void tswap16s(uint16_t *s)
  63 {
  64     *s = bswap16(*s);
  65 }
  66
  67 static inline void tswap32s(uint32_t *s)
  68 {
  69     *s = bswap32(*s);
  70 }
  71
  72 static inline void tswap64s(uint64_t *s)
  73 {
  74     *s = bswap64(*s);
  75 }
  76
  77 #else
  78
  79 static inline uint16_t tswap16(uint16_t s)
  80 {
  81     return s;
  82 }
  83
  84 static inline uint32_t tswap32(uint32_t s)
  85 {
  86     return s;
  87 }
  88
  89 static inline uint64_t tswap64(uint64_t s)
  90 {
  91     return s;
  92 }
  93
  94 static inline void tswap16s(uint16_t *s)
  95 {
  96 }
  97
  98 static inline void tswap32s(uint32_t *s)
  99 {
 100 }
 101
 102 static inline void tswap64s(uint64_t *s)
 103 {
 104 }
 105
 106 #endif
 107
 108 #if TARGET_LONG_SIZE == 4
 109 #define tswapl(s) tswap32(s)
 110 #define tswapls(s) tswap32s((uint32_t *)(s))
 111 #define bswaptls(s) bswap32s(s)
 112 #else
 113 #define tswapl(s) tswap64(s)
 114 #define tswapls(s) tswap64s((uint64_t *)(s))
 115 #define bswaptls(s) bswap64s(s)
 116 #endif
 117
 118 typedef union {
 119     float32 f;
 120     uint32_t l;
 121 } CPU_FloatU;
 122
 123 /* NOTE: arm FPA is horrible as double 32 bit words are stored in big
 124    endian ! */
 125 typedef union {
 126     float64 d;
 127 #if defined(WORDS_BIGENDIAN) \
 128     || (defined(__arm__) && !defined(__VFP_FP__) && !defined(CONFIG_SOFTFLOAT))
 129     struct {
 130         uint32_t upper;
 131         uint32_t lower;
 132     } l;
 133 #else
 134     struct {
 135         uint32_t lower;
 136         uint32_t upper;
 137     } l;
 138 #endif
 139     uint64_t ll;
 140 } CPU_DoubleU;
 141
 142 #ifdef TARGET_SPARC
 143 typedef union {
 144     float128 q;
 145 #if defined(WORDS_BIGENDIAN) \
 146     || (defined(__arm__) && !defined(__VFP_FP__) && !defined(CONFIG_SOFTFLOAT))
 147     struct {
 148         uint32_t upmost;
 149         uint32_t upper;
 150         uint32_t lower;
 151         uint32_t lowest;
 152     } l;
 153     struct {
 154         uint64_t upper;
 155         uint64_t lower;
 156     } ll;
 157 #else
 158     struct {
 159         uint32_t lowest;
 160         uint32_t lower;
 161         uint32_t upper;
 162         uint32_t upmost;
 163     } l;
 164     struct {
 165         uint64_t lower;
 166         uint64_t upper;
 167     } ll;
 168 #endif
 169 } CPU_QuadU;
 170 #endif
 171
 172 /* CPU memory access without any memory or io remapping */
 173
 174 /*
 175  * the generic syntax for the memory accesses is:
 176  *
 177  * load: ld{type}{sign}{size}{endian}_{access_type}(ptr)
 178  *
 179  * store: st{type}{size}{endian}_{access_type}(ptr, val)
 180  *
 181  * type is:
 182  * (empty): integer access
 183  *   f    : float access
 184  *
 185  * sign is:
 186  * (empty): for floats or 32 bit size
 187  *   u    : unsigned
 188  *   s    : signed
 189  *
 190  * size is:
 191  *   b: 8 bits
 192  *   w: 16 bits
 193  *   l: 32 bits
 194  *   q: 64 bits
 195  *
 196  * endian is:
 197  * (empty): target cpu endianness or 8 bit access
 198  *   r    : reversed target cpu endianness (not implemented yet)
 199  *   be   : big endian (not implemented yet)
 200  *   le   : little endian (not implemented yet)
 201  *
 202  * access_type is:
 203  *   raw    : host memory access
 204  *   user   : user mode access using soft MMU
 205  *   kernel : kernel mode access using soft MMU
 206  */
 207 static inline int ldub_p(const void *ptr)
 208 {
 209     return *(uint8_t *)ptr;
 210 }
 211
 212 static inline int ldsb_p(const void *ptr)
 213 {
 214     return *(int8_t *)ptr;
 215 }
 216
 217 static inline void stb_p(void *ptr, int v)
 218 {
 219     *(uint8_t *)ptr = v;
 220 }
 221
 222 /* NOTE: on arm, putting 2 in /proc/sys/debug/alignment so that the
 223    kernel handles unaligned load/stores may give better results, but
 224    it is a system wide setting : bad */
 225 #if defined(WORDS_BIGENDIAN) || defined(WORDS_ALIGNED)
 226
 227 /* conservative code for little endian unaligned accesses */
 228 static inline int lduw_le_p(const void *ptr)
 229 {
 230 #ifdef _ARCH_PPC
 231     int val;
 232     __asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (ptr));
 233     return val;
 234 #else
 235     const uint8_t *p = ptr;
 236     return p[0] | (p[1] << 8);
 237 #endif
 238 }
 239
 240 static inline int ldsw_le_p(const void *ptr)
 241 {
 242 #ifdef _ARCH_PPC
 243     int val;
 244     __asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (ptr));
 245     return (int16_t)val;
 246 #else
 247     const uint8_t *p = ptr;
 248     return (int16_t)(p[0] | (p[1] << 8));
 249 #endif
 250 }
 251
 252 static inline int ldl_le_p(const void *ptr)
 253 {
 254 #ifdef _ARCH_PPC
 255     int val;
 256     __asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (val) : "r" (ptr));
 257     return val;
 258 #else
 259     const uint8_t *p = ptr;
 260     return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
 261 #endif
 262 }
 263
 264 static inline uint64_t ldq_le_p(const void *ptr)
 265 {
 266     const uint8_t *p = ptr;
 267     uint32_t v1, v2;
 268     v1 = ldl_le_p(p);
 269     v2 = ldl_le_p(p + 4);
 270     return v1 | ((uint64_t)v2 << 32);
 271 }
 272
 273 static inline void stw_le_p(void *ptr, int v)
 274 {
 275 #ifdef _ARCH_PPC
 276     __asm__ __volatile__ ("sthbrx %1,0,%2" : "=m" (*(uint16_t *)ptr) : "r" (v), "r" (ptr));
 277 #else
 278     uint8_t *p = ptr;
 279     p[0] = v;
 280     p[1] = v >> 8;
 281 #endif
 282 }
 283
 284 static inline void stl_le_p(void *ptr, int v)
 285 {
 286 #ifdef _ARCH_PPC
 287     __asm__ __volatile__ ("stwbrx %1,0,%2" : "=m" (*(uint32_t *)ptr) : "r" (v), "r" (ptr));
 288 #else
 289     uint8_t *p = ptr;
 290     p[0] = v;
 291     p[1] = v >> 8;
 292     p[2] = v >> 16;
 293     p[3] = v >> 24;
 294 #endif
 295 }
 296
 297 static inline void stq_le_p(void *ptr, uint64_t v)
 298 {
 299     uint8_t *p = ptr;
 300     stl_le_p(p, (uint32_t)v);
 301     stl_le_p(p + 4, v >> 32);
 302 }
 303
 304 /* float access */
 305
 306 static inline float32 ldfl_le_p(const void *ptr)
 307 {
 308     union {
 309         float32 f;
 310         uint32_t i;
 311     } u;
 312     u.i = ldl_le_p(ptr);
 313     return u.f;
 314 }
 315
 316 static inline void stfl_le_p(void *ptr, float32 v)
 317 {
 318     union {
 319         float32 f;
 320         uint32_t i;
 321     } u;
 322     u.f = v;
 323     stl_le_p(ptr, u.i);
 324 }
 325
 326 static inline float64 ldfq_le_p(const void *ptr)
 327 {
 328     CPU_DoubleU u;
 329     u.l.lower = ldl_le_p(ptr);
 330     u.l.upper = ldl_le_p(ptr + 4);
 331     return u.d;
 332 }
 333
 334 static inline void stfq_le_p(void *ptr, float64 v)
 335 {
 336     CPU_DoubleU u;
 337     u.d = v;
 338     stl_le_p(ptr, u.l.lower);
 339     stl_le_p(ptr + 4, u.l.upper);
 340 }
 341
 342 #else
 343
 344 static inline int lduw_le_p(const void *ptr)
 345 {
 346     return *(uint16_t *)ptr;
 347 }
 348
 349 static inline int ldsw_le_p(const void *ptr)
 350 {
 351     return *(int16_t *)ptr;
 352 }
 353
 354 static inline int ldl_le_p(const void *ptr)
 355 {
 356     return *(uint32_t *)ptr;
 357 }
 358
 359 static inline uint64_t ldq_le_p(const void *ptr)
 360 {
 361     return *(uint64_t *)ptr;
 362 }
 363
 364 static inline void stw_le_p(void *ptr, int v)
 365 {
 366     *(uint16_t *)ptr = v;
 367 }
 368
 369 static inline void stl_le_p(void *ptr, int v)
 370 {
 371     *(uint32_t *)ptr = v;
 372 }
 373
 374 static inline void stq_le_p(void *ptr, uint64_t v)
 375 {
 376     *(uint64_t *)ptr = v;
 377 }
 378
 379 /* float access */
 380
 381 static inline float32 ldfl_le_p(const void *ptr)
 382 {
 383     return *(float32 *)ptr;
 384 }
 385
 386 static inline float64 ldfq_le_p(const void *ptr)
 387 {
 388     return *(float64 *)ptr;
 389 }
 390
 391 static inline void stfl_le_p(void *ptr, float32 v)
 392 {
 393     *(float32 *)ptr = v;
 394 }
 395
 396 static inline void stfq_le_p(void *ptr, float64 v)
 397 {
 398     *(float64 *)ptr = v;
 399 }
 400 #endif
 401
 402 #if !defined(WORDS_BIGENDIAN) || defined(WORDS_ALIGNED)
 403
 404 static inline int lduw_be_p(const void *ptr)
 405 {
 406 #if defined(__i386__)
 407     int val;
 408     asm volatile ("movzwl %1, %0\n"
 409                   "xchgb %b0, %h0\n"
 410                   : "=q" (val)
 411                   : "m" (*(uint16_t *)ptr));
 412     return val;
 413 #else
 414     const uint8_t *b = ptr;
 415     return ((b[0] << 8) | b[1]);
 416 #endif
 417 }
 418
 419 static inline int ldsw_be_p(const void *ptr)
 420 {
 421 #if defined(__i386__)
 422     int val;
 423     asm volatile ("movzwl %1, %0\n"
 424                   "xchgb %b0, %h0\n"
 425                   : "=q" (val)
 426                   : "m" (*(uint16_t *)ptr));
 427     return (int16_t)val;
 428 #else
 429     const uint8_t *b = ptr;
 430     return (int16_t)((b[0] << 8) | b[1]);
 431 #endif
 432 }
 433
 434 static inline int ldl_be_p(const void *ptr)
 435 {
 436 #if defined(__i386__) || defined(__x86_64__)
 437     int val;
 438     asm volatile ("movl %1, %0\n"
 439                   "bswap %0\n"
 440                   : "=r" (val)
 441                   : "m" (*(uint32_t *)ptr));
 442     return val;
 443 #else
 444     const uint8_t *b = ptr;
 445     return (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | b[3];
 446 #endif
 447 }
 448
 449 static inline uint64_t ldq_be_p(const void *ptr)
 450 {
 451     uint32_t a,b;
 452     a = ldl_be_p(ptr);
 453     b = ldl_be_p((uint8_t *)ptr + 4);
 454     return (((uint64_t)a<<32)|b);
 455 }
 456
 457 static inline void stw_be_p(void *ptr, int v)
 458 {
 459 #if defined(__i386__)
 460     asm volatile ("xchgb %b0, %h0\n"
 461                   "movw %w0, %1\n"
 462                   : "=q" (v)
 463                   : "m" (*(uint16_t *)ptr), "0" (v));
 464 #else
 465     uint8_t *d = (uint8_t *) ptr;
 466     d[0] = v >> 8;
 467     d[1] = v;
 468 #endif
 469 }
 470
 471 static inline void stl_be_p(void *ptr, int v)
 472 {
 473 #if defined(__i386__) || defined(__x86_64__)
 474     asm volatile ("bswap %0\n"
 475                   "movl %0, %1\n"
 476                   : "=r" (v)
 477                   : "m" (*(uint32_t *)ptr), "0" (v));
 478 #else
 479     uint8_t *d = (uint8_t *) ptr;
 480     d[0] = v >> 24;
 481     d[1] = v >> 16;
 482     d[2] = v >> 8;
 483     d[3] = v;
 484 #endif
 485 }
 486
 487 static inline void stq_be_p(void *ptr, uint64_t v)
 488 {
 489     stl_be_p(ptr, v >> 32);
 490     stl_be_p((uint8_t *)ptr + 4, v);
 491 }
 492
 493 /* float access */
 494
 495 static inline float32 ldfl_be_p(const void *ptr)
 496 {
 497     union {
 498         float32 f;
 499         uint32_t i;
 500     } u;
 501     u.i = ldl_be_p(ptr);
 502     return u.f;
 503 }
 504
 505 static inline void stfl_be_p(void *ptr, float32 v)
 506 {
 507     union {
 508         float32 f;
 509         uint32_t i;
 510     } u;
 511     u.f = v;
 512     stl_be_p(ptr, u.i);
 513 }
 514
 515 static inline float64 ldfq_be_p(const void *ptr)
 516 {
 517     CPU_DoubleU u;
 518     u.l.upper = ldl_be_p(ptr);
 519     u.l.lower = ldl_be_p((uint8_t *)ptr + 4);
 520     return u.d;
 521 }
 522
 523 static inline void stfq_be_p(void *ptr, float64 v)
 524 {
 525     CPU_DoubleU u;
 526     u.d = v;
 527     stl_be_p(ptr, u.l.upper);
 528     stl_be_p((uint8_t *)ptr + 4, u.l.lower);
 529 }
 530
 531 #else
 532
 533 static inline int lduw_be_p(const void *ptr)
 534 {
 535     return *(uint16_t *)ptr;
 536 }
 537
 538 static inline int ldsw_be_p(const void *ptr)
 539 {
 540     return *(int16_t *)ptr;
 541 }
 542
 543 static inline int ldl_be_p(const void *ptr)
 544 {
 545     return *(uint32_t *)ptr;
 546 }
 547
 548 static inline uint64_t ldq_be_p(const void *ptr)
 549 {
 550     return *(uint64_t *)ptr;
 551 }
 552
 553 static inline void stw_be_p(void *ptr, int v)
 554 {
 555     *(uint16_t *)ptr = v;
 556 }
 557
 558 static inline void stl_be_p(void *ptr, int v)
 559 {
 560     *(uint32_t *)ptr = v;
 561 }
 562
 563 static inline void stq_be_p(void *ptr, uint64_t v)
 564 {
 565     *(uint64_t *)ptr = v;
 566 }
 567
 568 /* float access */
 569
 570 static inline float32 ldfl_be_p(const void *ptr)
 571 {
 572     return *(float32 *)ptr;
 573 }
 574
 575 static inline float64 ldfq_be_p(const void *ptr)
 576 {
 577     return *(float64 *)ptr;
 578 }
 579
 580 static inline void stfl_be_p(void *ptr, float32 v)
 581 {
 582     *(float32 *)ptr = v;
 583 }
 584
 585 static inline void stfq_be_p(void *ptr, float64 v)
 586 {
 587     *(float64 *)ptr = v;
 588 }
 589
 590 #endif
 591
 592 /* target CPU memory access functions */
 593 #if defined(TARGET_WORDS_BIGENDIAN)
 594 #define lduw_p(p) lduw_be_p(p)
 595 #define ldsw_p(p) ldsw_be_p(p)
 596 #define ldl_p(p) ldl_be_p(p)
 597 #define ldq_p(p) ldq_be_p(p)
 598 #define ldfl_p(p) ldfl_be_p(p)
 599 #define ldfq_p(p) ldfq_be_p(p)
 600 #define stw_p(p, v) stw_be_p(p, v)
 601 #define stl_p(p, v) stl_be_p(p, v)
 602 #define stq_p(p, v) stq_be_p(p, v)
 603 #define stfl_p(p, v) stfl_be_p(p, v)
 604 #define stfq_p(p, v) stfq_be_p(p, v)
 605 #else
 606 #define lduw_p(p) lduw_le_p(p)
 607 #define ldsw_p(p) ldsw_le_p(p)
 608 #define ldl_p(p) ldl_le_p(p)
 609 #define ldq_p(p) ldq_le_p(p)
 610 #define ldfl_p(p) ldfl_le_p(p)
 611 #define ldfq_p(p) ldfq_le_p(p)
 612 #define stw_p(p, v) stw_le_p(p, v)
 613 #define stl_p(p, v) stl_le_p(p, v)
 614 #define stq_p(p, v) stq_le_p(p, v)
 615 #define stfl_p(p, v) stfl_le_p(p, v)
 616 #define stfq_p(p, v) stfq_le_p(p, v)
 617 #endif
 618
 619 /* MMU memory access macros */
 620
 621 #if defined(CONFIG_USER_ONLY)
 622 #include <assert.h>
 623 #include "qemu-types.h"
 624
 625 /* On some host systems the guest address space is reserved on the host.
 626  * This allows the guest address space to be offset to a convenient location.
 627  */
 628 //#define GUEST_BASE 0x20000000
 629 #define GUEST_BASE 0
 630
 631 /* All direct uses of g2h and h2g need to go away for usermode softmmu.  */
 632 #define g2h(x) ((void *)((unsigned long)(x) + GUEST_BASE))
 633 #define h2g(x) ({ \
 634     unsigned long __ret = (unsigned long)(x) - GUEST_BASE; \
 635     /* Check if given address fits target address space */ \
 636     assert(__ret == (abi_ulong)__ret); \
 637     (abi_ulong)__ret; \
 638 })
 639 #define h2g_valid(x) ({ \
 640     unsigned long __guest = (unsigned long)(x) - GUEST_BASE; \
 641     (__guest == (abi_ulong)__guest); \
 642 })
 643
 644 #define saddr(x) g2h(x)
 645 #define laddr(x) g2h(x)
 646
 647 #else /* !CONFIG_USER_ONLY */
 648 /* NOTE: we use double casts if pointers and target_ulong have
 649    different sizes */
 650 #define saddr(x) (uint8_t *)(long)(x)
 651 #define laddr(x) (uint8_t *)(long)(x)
 652 #endif
 653
 654 #define ldub_raw(p) ldub_p(laddr((p)))
 655 #define ldsb_raw(p) ldsb_p(laddr((p)))
 656 #define lduw_raw(p) lduw_p(laddr((p)))
 657 #define ldsw_raw(p) ldsw_p(laddr((p)))
 658 #define ldl_raw(p) ldl_p(laddr((p)))
 659 #define ldq_raw(p) ldq_p(laddr((p)))
 660 #define ldfl_raw(p) ldfl_p(laddr((p)))
 661 #define ldfq_raw(p) ldfq_p(laddr((p)))
 662 #define stb_raw(p, v) stb_p(saddr((p)), v)
 663 #define stw_raw(p, v) stw_p(saddr((p)), v)
 664 #define stl_raw(p, v) stl_p(saddr((p)), v)
 665 #define stq_raw(p, v) stq_p(saddr((p)), v)
 666 #define stfl_raw(p, v) stfl_p(saddr((p)), v)
 667 #define stfq_raw(p, v) stfq_p(saddr((p)), v)
 668
 669
 670 #if defined(CONFIG_USER_ONLY)
 671
 672 /* if user mode, no other memory access functions */
 673 #define ldub(p) ldub_raw(p)
 674 #define ldsb(p) ldsb_raw(p)
 675 #define lduw(p) lduw_raw(p)
 676 #define ldsw(p) ldsw_raw(p)
 677 #define ldl(p) ldl_raw(p)
 678 #define ldq(p) ldq_raw(p)
 679 #define ldfl(p) ldfl_raw(p)
 680 #define ldfq(p) ldfq_raw(p)
 681 #define stb(p, v) stb_raw(p, v)
 682 #define stw(p, v) stw_raw(p, v)
 683 #define stl(p, v) stl_raw(p, v)
 684 #define stq(p, v) stq_raw(p, v)
 685 #define stfl(p, v) stfl_raw(p, v)
 686 #define stfq(p, v) stfq_raw(p, v)
 687
 688 #define ldub_code(p) ldub_raw(p)
 689 #define ldsb_code(p) ldsb_raw(p)
 690 #define lduw_code(p) lduw_raw(p)
 691 #define ldsw_code(p) ldsw_raw(p)
 692 #define ldl_code(p) ldl_raw(p)
 693 #define ldq_code(p) ldq_raw(p)
 694
 695 #define ldub_kernel(p) ldub_raw(p)
 696 #define ldsb_kernel(p) ldsb_raw(p)
 697 #define lduw_kernel(p) lduw_raw(p)
 698 #define ldsw_kernel(p) ldsw_raw(p)
 699 #define ldl_kernel(p) ldl_raw(p)
 700 #define ldq_kernel(p) ldq_raw(p)
 701 #define ldfl_kernel(p) ldfl_raw(p)
 702 #define ldfq_kernel(p) ldfq_raw(p)
 703 #define stb_kernel(p, v) stb_raw(p, v)
 704 #define stw_kernel(p, v) stw_raw(p, v)
 705 #define stl_kernel(p, v) stl_raw(p, v)
 706 #define stq_kernel(p, v) stq_raw(p, v)
 707 #define stfl_kernel(p, v) stfl_raw(p, v)
 708 #define stfq_kernel(p, vt) stfq_raw(p, v)
 709
 710 #endif /* defined(CONFIG_USER_ONLY) */
 711
 712 /* page related stuff */
 713
 714 #define TARGET_PAGE_SIZE (1 << TARGET_PAGE_BITS)
 715 #define TARGET_PAGE_MASK ~(TARGET_PAGE_SIZE - 1)
 716 #define TARGET_PAGE_ALIGN(addr) (((addr) + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK)
 717
 718 /* ??? These should be the larger of unsigned long and target_ulong.  */
 719 extern unsigned long qemu_real_host_page_size;
 720 extern unsigned long qemu_host_page_bits;
 721 extern unsigned long qemu_host_page_size;
 722 extern unsigned long qemu_host_page_mask;
 723
 724 #define HOST_PAGE_ALIGN(addr) (((addr) + qemu_host_page_size - 1) & qemu_host_page_mask)
 725
 726 /* same as PROT_xxx */
 727 #define PAGE_READ      0x0001
 728 #define PAGE_WRITE     0x0002
 729 #define PAGE_EXEC      0x0004
 730 #define PAGE_BITS      (PAGE_READ | PAGE_WRITE | PAGE_EXEC)
 731 #define PAGE_VALID     0x0008
 732 /* original state of the write flag (used when tracking self-modifying
 733    code */
 734 #define PAGE_WRITE_ORG 0x0010
 735 #define PAGE_RESERVED  0x0020
 736
 737 void page_dump(FILE *f);
 738 int walk_memory_regions(void *,
 739     int (*fn)(void *, unsigned long, unsigned long, unsigned long));
 740 int page_get_flags(target_ulong address);
 741 void page_set_flags(target_ulong start, target_ulong end, int flags);
 742 int page_check_range(target_ulong start, target_ulong len, int flags);
 743
 744 void cpu_exec_init_all(unsigned long tb_size);
 745 CPUState *cpu_copy(CPUState *env);
 746 CPUState *qemu_get_cpu(int cpu);
 747
 748 void cpu_dump_state(CPUState *env, FILE *f,
 749                     int (*cpu_fprintf)(FILE *f, const char *fmt, ...),
 750                     int flags);
 751 void cpu_dump_statistics (CPUState *env, FILE *f,
 752                           int (*cpu_fprintf)(FILE *f, const char *fmt, ...),
 753                           int flags);
 754
 755 void QEMU_NORETURN cpu_abort(CPUState *env, const char *fmt, ...)
 756     __attribute__ ((__format__ (__printf__, 2, 3)));
 757 extern CPUState *first_cpu;
 758 extern CPUState *cpu_single_env;
 759 extern int64_t qemu_icount;
 760 extern int use_icount;
 761
 762 #define CPU_INTERRUPT_HARD   0x02 /* hardware interrupt pending */
 763 #define CPU_INTERRUPT_EXITTB 0x04 /* exit the current TB (use for x86 a20 case) */
 764 #define CPU_INTERRUPT_TIMER  0x08 /* internal timer exception pending */
 765 #define CPU_INTERRUPT_FIQ    0x10 /* Fast interrupt pending.  */
 766 #define CPU_INTERRUPT_HALT   0x20 /* CPU halt wanted */
 767 #define CPU_INTERRUPT_SMI    0x40 /* (x86 only) SMI interrupt pending */
 768 #define CPU_INTERRUPT_DEBUG  0x80 /* Debug event occured.  */
 769 #define CPU_INTERRUPT_VIRQ   0x100 /* virtual interrupt pending.  */
 770 #define CPU_INTERRUPT_NMI    0x200 /* NMI pending. */
 771 #define CPU_INTERRUPT_INIT   0x400 /* INIT pending. */
 772 #define CPU_INTERRUPT_SIPI   0x800 /* SIPI pending. */
 773
 774 void cpu_interrupt(CPUState *s, int mask);
 775 void cpu_reset_interrupt(CPUState *env, int mask);
 776
 777 void cpu_exit(CPUState *s);
 778
 779 int qemu_cpu_has_work(CPUState *env);
 780
 781 /* Breakpoint/watchpoint flags */
 782 #define BP_MEM_READ           0x01
 783 #define BP_MEM_WRITE          0x02
 784 #define BP_MEM_ACCESS         (BP_MEM_READ | BP_MEM_WRITE)
 785 #define BP_STOP_BEFORE_ACCESS 0x04
 786 #define BP_WATCHPOINT_HIT     0x08
 787 #define BP_GDB                0x10
 788 #define BP_CPU                0x20
 789
 790 int cpu_breakpoint_insert(CPUState *env, target_ulong pc, int flags,
 791                           CPUBreakpoint **breakpoint);
 792 int cpu_breakpoint_remove(CPUState *env, target_ulong pc, int flags);
 793 void cpu_breakpoint_remove_by_ref(CPUState *env, CPUBreakpoint *breakpoint);
 794 void cpu_breakpoint_remove_all(CPUState *env, int mask);
 795 int cpu_watchpoint_insert(CPUState *env, target_ulong addr, target_ulong len,
 796                           int flags, CPUWatchpoint **watchpoint);
 797 int cpu_watchpoint_remove(CPUState *env, target_ulong addr,
 798                           target_ulong len, int flags);
 799 void cpu_watchpoint_remove_by_ref(CPUState *env, CPUWatchpoint *watchpoint);
 800 void cpu_watchpoint_remove_all(CPUState *env, int mask);
 801
 802 #define SSTEP_ENABLE  0x1  /* Enable simulated HW single stepping */
 803 #define SSTEP_NOIRQ   0x2  /* Do not use IRQ while single stepping */
 804 #define SSTEP_NOTIMER 0x4  /* Do not Timers while single stepping */
 805
 806 void cpu_single_step(CPUState *env, int enabled);
 807 void cpu_reset(CPUState *s);
 808
 809 /* Return the physical page corresponding to a virtual one. Use it
 810    only for debugging because no protection checks are done. Return -1
 811    if no page found. */
 812 target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr);
 813
 814 #define CPU_LOG_TB_OUT_ASM (1 << 0)
 815 #define CPU_LOG_TB_IN_ASM  (1 << 1)
 816 #define CPU_LOG_TB_OP      (1 << 2)
 817 #define CPU_LOG_TB_OP_OPT  (1 << 3)
 818 #define CPU_LOG_INT        (1 << 4)
 819 #define CPU_LOG_EXEC       (1 << 5)
 820 #define CPU_LOG_PCALL      (1 << 6)
 821 #define CPU_LOG_IOPORT     (1 << 7)
 822 #define CPU_LOG_TB_CPU     (1 << 8)
 823 #define CPU_LOG_RESET      (1 << 9)
 824
 825 /* define log items */
 826 typedef struct CPULogItem {
 827     int mask;
 828     const char *name;
 829     const char *help;
 830 } CPULogItem;
 831
 832 extern const CPULogItem cpu_log_items[];
 833
 834 void cpu_set_log(int log_flags);
 835 void cpu_set_log_filename(const char *filename);
 836 int cpu_str_to_log_mask(const char *str);
 837
 838 /* IO ports API */
 839
 840 /* NOTE: as these functions may be even used when there is an isa
 841    brige on non x86 targets, we always defined them */
 842 #ifndef NO_CPU_IO_DEFS
 843 void cpu_outb(CPUState *env, int addr, int val);
 844 void cpu_outw(CPUState *env, int addr, int val);
 845 void cpu_outl(CPUState *env, int addr, int val);
 846 int cpu_inb(CPUState *env, int addr);
 847 int cpu_inw(CPUState *env, int addr);
 848 int cpu_inl(CPUState *env, int addr);
 849 #endif
 850
 851 /* memory API */
 852
 853 extern int phys_ram_fd;
 854 extern uint8_t *phys_ram_dirty;
 855 extern ram_addr_t ram_size;
 856 extern ram_addr_t last_ram_offset;
 857 extern uint8_t *bios_mem;
 858
 859 /* physical memory access */
 860
 861 /* MMIO pages are identified by a combination of an IO device index and
 862    3 flags.  The ROMD code stores the page ram offset in iotlb entry,
 863    so only a limited number of ids are avaiable.  */
 864
 865 #define IO_MEM_NB_ENTRIES  (1 << (TARGET_PAGE_BITS  - IO_MEM_SHIFT))
 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 int cpu_memory_rw_debug(CPUState *env, target_ulong addr,
 878                         uint8_t *buf, int len, int is_write);
 879
 880 #define VGA_DIRTY_FLAG       0x01
 881 #define CODE_DIRTY_FLAG      0x02
 882 #define KQEMU_DIRTY_FLAG     0x04
 883 #define MIGRATION_DIRTY_FLAG 0x08
 884
 885 /* read dirty bit (return 0 or 1) */
 886 static inline int cpu_physical_memory_is_dirty(ram_addr_t addr)
 887 {
 888     return phys_ram_dirty[addr >> TARGET_PAGE_BITS] == 0xff;
 889 }
 890
 891 static inline int cpu_physical_memory_get_dirty(ram_addr_t addr,
 892                                                 int dirty_flags)
 893 {
 894     return phys_ram_dirty[addr >> TARGET_PAGE_BITS] & dirty_flags;
 895 }
 896
 897 static inline void cpu_physical_memory_set_dirty(ram_addr_t addr)
 898 {
 899     phys_ram_dirty[addr >> TARGET_PAGE_BITS] = 0xff;
 900 }
 901
 902 void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
 903                                      int dirty_flags);
 904 void cpu_tlb_update_dirty(CPUState *env);
 905
 906 int cpu_physical_memory_set_dirty_tracking(int enable);
 907
 908 int cpu_physical_memory_get_dirty_tracking(void);
 909
 910 int cpu_physical_sync_dirty_bitmap(target_phys_addr_t start_addr,
 911                                    target_phys_addr_t end_addr);
 912
 913 void dump_exec_info(FILE *f,
 914                     int (*cpu_fprintf)(FILE *f, const char *fmt, ...));
 915
 916 /* Coalesced MMIO regions are areas where write operations can be reordered.
 917  * This usually implies that write operations are side-effect free.  This allows
 918  * batching which can make a major impact on performance when using
 919  * virtualization.
 920  */
 921 void qemu_register_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size);
 922
 923 void qemu_unregister_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size);
 924
 925 /*******************************************/
 926 /* host CPU ticks (if available) */
 927
 928 #if defined(_ARCH_PPC)
 929
 930 static inline int64_t cpu_get_real_ticks(void)
 931 {
 932     int64_t retval;
 933 #ifdef _ARCH_PPC64
 934     /* This reads timebase in one 64bit go and includes Cell workaround from:
 935        http://ozlabs.org/pipermail/linuxppc-dev/2006-October/027052.html
 936      */
 937     __asm__ __volatile__ (
 938         "mftb    %0\n\t"
 939         "cmpwi   %0,0\n\t"
 940         "beq-    $-8"
 941         : "=r" (retval));
 942 #else
 943     /* http://ozlabs.org/pipermail/linuxppc-dev/1999-October/003889.html */
 944     unsigned long junk;
 945     __asm__ __volatile__ (
 946         "mftbu   %1\n\t"
 947         "mftb    %L0\n\t"
 948         "mftbu   %0\n\t"
 949         "cmpw    %0,%1\n\t"
 950         "bne     $-16"
 951         : "=r" (retval), "=r" (junk));
 952 #endif
 953     return retval;
 954 }
 955
 956 #elif defined(__i386__)
 957
 958 static inline int64_t cpu_get_real_ticks(void)
 959 {
 960     int64_t val;
 961     asm volatile ("rdtsc" : "=A" (val));
 962     return val;
 963 }
 964
 965 #elif defined(__x86_64__)
 966
 967 static inline int64_t cpu_get_real_ticks(void)
 968 {
 969     uint32_t low,high;
 970     int64_t val;
 971     asm volatile("rdtsc" : "=a" (low), "=d" (high));
 972     val = high;
 973     val <<= 32;
 974     val |= low;
 975     return val;
 976 }
 977
 978 #elif defined(__hppa__)
 979
 980 static inline int64_t cpu_get_real_ticks(void)
 981 {
 982     int val;
 983     asm volatile ("mfctl %%cr16, %0" : "=r"(val));
 984     return val;
 985 }
 986
 987 #elif defined(__ia64)
 988
 989 static inline int64_t cpu_get_real_ticks(void)
 990 {
 991         int64_t val;
 992         asm volatile ("mov %0 = ar.itc" : "=r"(val) :: "memory");
 993         return val;
 994 }
 995
 996 #elif defined(__s390__)
 997
 998 static inline int64_t cpu_get_real_ticks(void)
 999 {
1000     int64_t val;
1001     asm volatile("stck 0(%1)" : "=m" (val) : "a" (&val) : "cc");
1002     return val;
1003 }
1004
1005 #elif defined(__sparc_v8plus__) || defined(__sparc_v8plusa__) || defined(__sparc_v9__)
1006
1007 static inline int64_t cpu_get_real_ticks (void)
1008 {
1009 #if     defined(_LP64)
1010         uint64_t        rval;
1011         asm volatile("rd %%tick,%0" : "=r"(rval));
1012         return rval;
1013 #else
1014         union {
1015                 uint64_t i64;
1016                 struct {
1017                         uint32_t high;
1018                         uint32_t low;
1019                 }       i32;
1020         } rval;
1021         asm volatile("rd %%tick,%1; srlx %1,32,%0"
1022                 : "=r"(rval.i32.high), "=r"(rval.i32.low));
1023         return rval.i64;
1024 #endif
1025 }
1026
1027 #elif defined(__mips__)
1028
1029 static inline int64_t cpu_get_real_ticks(void)
1030 {
1031 #if __mips_isa_rev >= 2
1032     uint32_t count;
1033     static uint32_t cyc_per_count = 0;
1034
1035     if (!cyc_per_count)
1036         __asm__ __volatile__("rdhwr %0, $3" : "=r" (cyc_per_count));
1037
1038     __asm__ __volatile__("rdhwr %1, $2" : "=r" (count));
1039     return (int64_t)(count * cyc_per_count);
1040 #else
1041     /* FIXME */
1042     static int64_t ticks = 0;
1043     return ticks++;
1044 #endif
1045 }
1046
1047 #else
1048 /* The host CPU doesn't have an easily accessible cycle counter.
1049    Just return a monotonically increasing value.  This will be
1050    totally wrong, but hopefully better than nothing.  */
1051 static inline int64_t cpu_get_real_ticks (void)
1052 {
1053     static int64_t ticks = 0;
1054     return ticks++;
1055 }
1056 #endif
1057
1058 /* profiling */
1059 #ifdef CONFIG_PROFILER
1060 static inline int64_t profile_getclock(void)
1061 {
1062     return cpu_get_real_ticks();
1063 }
1064
1065 extern int64_t kqemu_time, kqemu_time_start;
1066 extern int64_t qemu_time, qemu_time_start;
1067 extern int64_t tlb_flush_time;
1068 extern int64_t kqemu_exec_count;
1069 extern int64_t dev_time;
1070 extern int64_t kqemu_ret_int_count;
1071 extern int64_t kqemu_ret_excp_count;
1072 extern int64_t kqemu_ret_intr_count;
1073 #endif
1074
1075 #endif /* CPU_ALL_H */