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(const void *ptr)
 210 {
 211     return *(uint8_t *)ptr;
 212 }
 213
 214 static inline int ldsb_p(const 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(const 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(const 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(const 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(const 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(const 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(const 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(const void *ptr)
 347 {
 348     return *(uint16_t *)ptr;
 349 }
 350
 351 static inline int ldsw_le_p(const void *ptr)
 352 {
 353     return *(int16_t *)ptr;
 354 }
 355
 356 static inline int ldl_le_p(const void *ptr)
 357 {
 358     return *(uint32_t *)ptr;
 359 }
 360
 361 static inline uint64_t ldq_le_p(const 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(const void *ptr)
 384 {
 385     return *(float32 *)ptr;
 386 }
 387
 388 static inline float64 ldfq_le_p(const 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(const 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(const 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(const 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(const 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(const 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(const 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(const void *ptr)
 536 {
 537     return *(uint16_t *)ptr;
 538 }
 539
 540 static inline int ldsw_be_p(const void *ptr)
 541 {
 542     return *(int16_t *)ptr;
 543 }
 544
 545 static inline int ldl_be_p(const void *ptr)
 546 {
 547     return *(uint32_t *)ptr;
 548 }
 549
 550 static inline uint64_t ldq_be_p(const 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(const void *ptr)
 573 {
 574     return *(float32 *)ptr;
 575 }
 576
 577 static inline float64 ldfq_be_p(const 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 #include <assert.h>
 625 #include "qemu-types.h"
 626
 627 /* On some host systems the guest address space is reserved on the host.
 628  * This allows the guest address space to be offset to a convenient location.
 629  */
 630 //#define GUEST_BASE 0x20000000
 631 #define GUEST_BASE 0
 632
 633 /* All direct uses of g2h and h2g need to go away for usermode softmmu.  */
 634 #define g2h(x) ((void *)((unsigned long)(x) + GUEST_BASE))
 635 #define h2g(x) ({ \
 636     unsigned long __ret = (unsigned long)(x) - GUEST_BASE; \
 637     /* Check if given address fits target address space */ \
 638     assert(__ret == (abi_ulong)__ret); \
 639     (abi_ulong)__ret; \
 640 })
 641
 642 #define saddr(x) g2h(x)
 643 #define laddr(x) g2h(x)
 644
 645 #else /* !CONFIG_USER_ONLY */
 646 /* NOTE: we use double casts if pointers and target_ulong have
 647    different sizes */
 648 #define saddr(x) (uint8_t *)(long)(x)
 649 #define laddr(x) (uint8_t *)(long)(x)
 650 #endif
 651
 652 #define ldub_raw(p) ldub_p(laddr((p)))
 653 #define ldsb_raw(p) ldsb_p(laddr((p)))
 654 #define lduw_raw(p) lduw_p(laddr((p)))
 655 #define ldsw_raw(p) ldsw_p(laddr((p)))
 656 #define ldl_raw(p) ldl_p(laddr((p)))
 657 #define ldq_raw(p) ldq_p(laddr((p)))
 658 #define ldfl_raw(p) ldfl_p(laddr((p)))
 659 #define ldfq_raw(p) ldfq_p(laddr((p)))
 660 #define stb_raw(p, v) stb_p(saddr((p)), v)
 661 #define stw_raw(p, v) stw_p(saddr((p)), v)
 662 #define stl_raw(p, v) stl_p(saddr((p)), v)
 663 #define stq_raw(p, v) stq_p(saddr((p)), v)
 664 #define stfl_raw(p, v) stfl_p(saddr((p)), v)
 665 #define stfq_raw(p, v) stfq_p(saddr((p)), v)
 666
 667
 668 #if defined(CONFIG_USER_ONLY)
 669
 670 /* if user mode, no other memory access functions */
 671 #define ldub(p) ldub_raw(p)
 672 #define ldsb(p) ldsb_raw(p)
 673 #define lduw(p) lduw_raw(p)
 674 #define ldsw(p) ldsw_raw(p)
 675 #define ldl(p) ldl_raw(p)
 676 #define ldq(p) ldq_raw(p)
 677 #define ldfl(p) ldfl_raw(p)
 678 #define ldfq(p) ldfq_raw(p)
 679 #define stb(p, v) stb_raw(p, v)
 680 #define stw(p, v) stw_raw(p, v)
 681 #define stl(p, v) stl_raw(p, v)
 682 #define stq(p, v) stq_raw(p, v)
 683 #define stfl(p, v) stfl_raw(p, v)
 684 #define stfq(p, v) stfq_raw(p, v)
 685
 686 #define ldub_code(p) ldub_raw(p)
 687 #define ldsb_code(p) ldsb_raw(p)
 688 #define lduw_code(p) lduw_raw(p)
 689 #define ldsw_code(p) ldsw_raw(p)
 690 #define ldl_code(p) ldl_raw(p)
 691 #define ldq_code(p) ldq_raw(p)
 692
 693 #define ldub_kernel(p) ldub_raw(p)
 694 #define ldsb_kernel(p) ldsb_raw(p)
 695 #define lduw_kernel(p) lduw_raw(p)
 696 #define ldsw_kernel(p) ldsw_raw(p)
 697 #define ldl_kernel(p) ldl_raw(p)
 698 #define ldq_kernel(p) ldq_raw(p)
 699 #define ldfl_kernel(p) ldfl_raw(p)
 700 #define ldfq_kernel(p) ldfq_raw(p)
 701 #define stb_kernel(p, v) stb_raw(p, v)
 702 #define stw_kernel(p, v) stw_raw(p, v)
 703 #define stl_kernel(p, v) stl_raw(p, v)
 704 #define stq_kernel(p, v) stq_raw(p, v)
 705 #define stfl_kernel(p, v) stfl_raw(p, v)
 706 #define stfq_kernel(p, vt) stfq_raw(p, v)
 707
 708 #endif /* defined(CONFIG_USER_ONLY) */
 709
 710 /* page related stuff */
 711
 712 #define TARGET_PAGE_SIZE (1 << TARGET_PAGE_BITS)
 713 #define TARGET_PAGE_MASK ~(TARGET_PAGE_SIZE - 1)
 714 #define TARGET_PAGE_ALIGN(addr) (((addr) + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK)
 715
 716 /* ??? These should be the larger of unsigned long and target_ulong.  */
 717 extern unsigned long qemu_real_host_page_size;
 718 extern unsigned long qemu_host_page_bits;
 719 extern unsigned long qemu_host_page_size;
 720 extern unsigned long qemu_host_page_mask;
 721
 722 #define HOST_PAGE_ALIGN(addr) (((addr) + qemu_host_page_size - 1) & qemu_host_page_mask)
 723
 724 /* same as PROT_xxx */
 725 #define PAGE_READ      0x0001
 726 #define PAGE_WRITE     0x0002
 727 #define PAGE_EXEC      0x0004
 728 #define PAGE_BITS      (PAGE_READ | PAGE_WRITE | PAGE_EXEC)
 729 #define PAGE_VALID     0x0008
 730 /* original state of the write flag (used when tracking self-modifying
 731    code */
 732 #define PAGE_WRITE_ORG 0x0010
 733 #define PAGE_RESERVED  0x0020
 734
 735 void page_dump(FILE *f);
 736 int page_get_flags(target_ulong address);
 737 void page_set_flags(target_ulong start, target_ulong end, int flags);
 738 int page_check_range(target_ulong start, target_ulong len, int flags);
 739
 740 void cpu_exec_init_all(unsigned long tb_size);
 741 CPUState *cpu_copy(CPUState *env);
 742
 743 void cpu_dump_state(CPUState *env, FILE *f,
 744                     int (*cpu_fprintf)(FILE *f, const char *fmt, ...),
 745                     int flags);
 746 void cpu_dump_statistics (CPUState *env, FILE *f,
 747                           int (*cpu_fprintf)(FILE *f, const char *fmt, ...),
 748                           int flags);
 749
 750 void cpu_abort(CPUState *env, const char *fmt, ...)
 751     __attribute__ ((__format__ (__printf__, 2, 3)))
 752     __attribute__ ((__noreturn__));
 753 extern CPUState *first_cpu;
 754 extern CPUState *cpu_single_env;
 755 extern int64_t qemu_icount;
 756 extern int use_icount;
 757
 758 #define CPU_INTERRUPT_EXIT   0x01 /* wants exit from main loop */
 759 #define CPU_INTERRUPT_HARD   0x02 /* hardware interrupt pending */
 760 #define CPU_INTERRUPT_EXITTB 0x04 /* exit the current TB (use for x86 a20 case) */
 761 #define CPU_INTERRUPT_TIMER  0x08 /* internal timer exception pending */
 762 #define CPU_INTERRUPT_FIQ    0x10 /* Fast interrupt pending.  */
 763 #define CPU_INTERRUPT_HALT   0x20 /* CPU halt wanted */
 764 #define CPU_INTERRUPT_SMI    0x40 /* (x86 only) SMI interrupt pending */
 765 #define CPU_INTERRUPT_DEBUG  0x80 /* Debug event occured.  */
 766 #define CPU_INTERRUPT_VIRQ   0x100 /* virtual interrupt pending.  */
 767 #define CPU_INTERRUPT_NMI    0x200 /* NMI pending. */
 768
 769 void cpu_interrupt(CPUState *s, int mask);
 770 void cpu_reset_interrupt(CPUState *env, int mask);
 771
 772 /* Breakpoint/watchpoint flags */
 773 #define BP_MEM_READ           0x01
 774 #define BP_MEM_WRITE          0x02
 775 #define BP_MEM_ACCESS         (BP_MEM_READ | BP_MEM_WRITE)
 776 #define BP_STOP_BEFORE_ACCESS 0x04
 777 #define BP_WATCHPOINT_HIT     0x08
 778 #define BP_GDB                0x10
 779 #define BP_CPU                0x20
 780
 781 int cpu_breakpoint_insert(CPUState *env, target_ulong pc, int flags,
 782                           CPUBreakpoint **breakpoint);
 783 int cpu_breakpoint_remove(CPUState *env, target_ulong pc, int flags);
 784 void cpu_breakpoint_remove_by_ref(CPUState *env, CPUBreakpoint *breakpoint);
 785 void cpu_breakpoint_remove_all(CPUState *env, int mask);
 786 int cpu_watchpoint_insert(CPUState *env, target_ulong addr, target_ulong len,
 787                           int flags, CPUWatchpoint **watchpoint);
 788 int cpu_watchpoint_remove(CPUState *env, target_ulong addr,
 789                           target_ulong len, int flags);
 790 void cpu_watchpoint_remove_by_ref(CPUState *env, CPUWatchpoint *watchpoint);
 791 void cpu_watchpoint_remove_all(CPUState *env, int mask);
 792
 793 #define SSTEP_ENABLE  0x1  /* Enable simulated HW single stepping */
 794 #define SSTEP_NOIRQ   0x2  /* Do not use IRQ while single stepping */
 795 #define SSTEP_NOTIMER 0x4  /* Do not Timers while single stepping */
 796
 797 void cpu_single_step(CPUState *env, int enabled);
 798 void cpu_reset(CPUState *s);
 799
 800 /* Return the physical page corresponding to a virtual one. Use it
 801    only for debugging because no protection checks are done. Return -1
 802    if no page found. */
 803 target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr);
 804
 805 #define CPU_LOG_TB_OUT_ASM (1 << 0)
 806 #define CPU_LOG_TB_IN_ASM  (1 << 1)
 807 #define CPU_LOG_TB_OP      (1 << 2)
 808 #define CPU_LOG_TB_OP_OPT  (1 << 3)
 809 #define CPU_LOG_INT        (1 << 4)
 810 #define CPU_LOG_EXEC       (1 << 5)
 811 #define CPU_LOG_PCALL      (1 << 6)
 812 #define CPU_LOG_IOPORT     (1 << 7)
 813 #define CPU_LOG_TB_CPU     (1 << 8)
 814
 815 /* define log items */
 816 typedef struct CPULogItem {
 817     int mask;
 818     const char *name;
 819     const char *help;
 820 } CPULogItem;
 821
 822 extern const CPULogItem cpu_log_items[];
 823
 824 void cpu_set_log(int log_flags);
 825 void cpu_set_log_filename(const char *filename);
 826 int cpu_str_to_log_mask(const char *str);
 827
 828 /* IO ports API */
 829
 830 /* NOTE: as these functions may be even used when there is an isa
 831    brige on non x86 targets, we always defined them */
 832 #ifndef NO_CPU_IO_DEFS
 833 void cpu_outb(CPUState *env, int addr, int val);
 834 void cpu_outw(CPUState *env, int addr, int val);
 835 void cpu_outl(CPUState *env, int addr, int val);
 836 int cpu_inb(CPUState *env, int addr);
 837 int cpu_inw(CPUState *env, int addr);
 838 int cpu_inl(CPUState *env, int addr);
 839 #endif
 840
 841 /* address in the RAM (different from a physical address) */
 842 #ifdef USE_KQEMU
 843 typedef uint32_t ram_addr_t;
 844 #else
 845 typedef unsigned long ram_addr_t;
 846 #endif
 847
 848 /* memory API */
 849
 850 extern ram_addr_t phys_ram_size;
 851 extern int phys_ram_fd;
 852 extern uint8_t *phys_ram_base;
 853 extern uint8_t *phys_ram_dirty;
 854 extern ram_addr_t ram_size;
 855
 856 /* physical memory access */
 857
 858 /* MMIO pages are identified by a combination of an IO device index and
 859    3 flags.  The ROMD code stores the page ram offset in iotlb entry,
 860    so only a limited number of ids are avaiable.  */
 861
 862 #define IO_MEM_SHIFT       3
 863 #define IO_MEM_NB_ENTRIES  (1 << (TARGET_PAGE_BITS  - IO_MEM_SHIFT))
 864
 865 #define IO_MEM_RAM         (0 << IO_MEM_SHIFT) /* hardcoded offset */
 866 #define IO_MEM_ROM         (1 << IO_MEM_SHIFT) /* hardcoded offset */
 867 #define IO_MEM_UNASSIGNED  (2 << IO_MEM_SHIFT)
 868 #define IO_MEM_NOTDIRTY    (3 << IO_MEM_SHIFT)
 869
 870 /* Acts like a ROM when read and like a device when written.  */
 871 #define IO_MEM_ROMD        (1)
 872 #define IO_MEM_SUBPAGE     (2)
 873 #define IO_MEM_SUBWIDTH    (4)
 874
 875 /* Flags stored in the low bits of the TLB virtual address.  These are
 876    defined so that fast path ram access is all zeros.  */
 877 /* Zero if TLB entry is valid.  */
 878 #define TLB_INVALID_MASK   (1 << 3)
 879 /* Set if TLB entry references a clean RAM page.  The iotlb entry will
 880    contain the page physical address.  */
 881 #define TLB_NOTDIRTY    (1 << 4)
 882 /* Set if TLB entry is an IO callback.  */
 883 #define TLB_MMIO        (1 << 5)
 884
 885 typedef void CPUWriteMemoryFunc(void *opaque, target_phys_addr_t addr, uint32_t value);
 886 typedef uint32_t CPUReadMemoryFunc(void *opaque, target_phys_addr_t addr);
 887
 888 void cpu_register_physical_memory_offset(target_phys_addr_t start_addr,
 889                                          ram_addr_t size,
 890                                          ram_addr_t phys_offset,
 891                                          ram_addr_t region_offset);
 892 static inline void cpu_register_physical_memory(target_phys_addr_t start_addr,
 893                                                 ram_addr_t size,
 894                                                 ram_addr_t phys_offset)
 895 {
 896     cpu_register_physical_memory_offset(start_addr, size, phys_offset, 0);
 897 }
 898
 899 ram_addr_t cpu_get_physical_page_desc(target_phys_addr_t addr);
 900 ram_addr_t qemu_ram_alloc(ram_addr_t);
 901 void qemu_ram_free(ram_addr_t addr);
 902 int cpu_register_io_memory(int io_index,
 903                            CPUReadMemoryFunc **mem_read,
 904                            CPUWriteMemoryFunc **mem_write,
 905                            void *opaque);
 906 CPUWriteMemoryFunc **cpu_get_io_memory_write(int io_index);
 907 CPUReadMemoryFunc **cpu_get_io_memory_read(int io_index);
 908
 909 void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,
 910                             int len, int is_write);
 911 static inline void cpu_physical_memory_read(target_phys_addr_t addr,
 912                                             uint8_t *buf, int len)
 913 {
 914     cpu_physical_memory_rw(addr, buf, len, 0);
 915 }
 916 static inline void cpu_physical_memory_write(target_phys_addr_t addr,
 917                                              const uint8_t *buf, int len)
 918 {
 919     cpu_physical_memory_rw(addr, (uint8_t *)buf, len, 1);
 920 }
 921 uint32_t ldub_phys(target_phys_addr_t addr);
 922 uint32_t lduw_phys(target_phys_addr_t addr);
 923 uint32_t ldl_phys(target_phys_addr_t addr);
 924 uint64_t ldq_phys(target_phys_addr_t addr);
 925 void stl_phys_notdirty(target_phys_addr_t addr, uint32_t val);
 926 void stq_phys_notdirty(target_phys_addr_t addr, uint64_t val);
 927 void stb_phys(target_phys_addr_t addr, uint32_t val);
 928 void stw_phys(target_phys_addr_t addr, uint32_t val);
 929 void stl_phys(target_phys_addr_t addr, uint32_t val);
 930 void stq_phys(target_phys_addr_t addr, uint64_t val);
 931
 932 void cpu_physical_memory_write_rom(target_phys_addr_t addr,
 933                                    const uint8_t *buf, int len);
 934 int cpu_memory_rw_debug(CPUState *env, target_ulong addr,
 935                         uint8_t *buf, int len, int is_write);
 936
 937 #define VGA_DIRTY_FLAG       0x01
 938 #define CODE_DIRTY_FLAG      0x02
 939 #define KQEMU_DIRTY_FLAG     0x04
 940 #define MIGRATION_DIRTY_FLAG 0x08
 941
 942 /* read dirty bit (return 0 or 1) */
 943 static inline int cpu_physical_memory_is_dirty(ram_addr_t addr)
 944 {
 945     return phys_ram_dirty[addr >> TARGET_PAGE_BITS] == 0xff;
 946 }
 947
 948 static inline int cpu_physical_memory_get_dirty(ram_addr_t addr,
 949                                                 int dirty_flags)
 950 {
 951     return phys_ram_dirty[addr >> TARGET_PAGE_BITS] & dirty_flags;
 952 }
 953
 954 static inline void cpu_physical_memory_set_dirty(ram_addr_t addr)
 955 {
 956     phys_ram_dirty[addr >> TARGET_PAGE_BITS] = 0xff;
 957 }
 958
 959 void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
 960                                      int dirty_flags);
 961 void cpu_tlb_update_dirty(CPUState *env);
 962
 963 int cpu_physical_memory_set_dirty_tracking(int enable);
 964
 965 int cpu_physical_memory_get_dirty_tracking(void);
 966
 967 void cpu_physical_sync_dirty_bitmap(target_phys_addr_t start_addr, target_phys_addr_t end_addr);
 968
 969 void dump_exec_info(FILE *f,
 970                     int (*cpu_fprintf)(FILE *f, const char *fmt, ...));
 971
 972 /*******************************************/
 973 /* host CPU ticks (if available) */
 974
 975 #if defined(__powerpc__)
 976
 977 static inline uint32_t get_tbl(void)
 978 {
 979     uint32_t tbl;
 980     asm volatile("mftb %0" : "=r" (tbl));
 981     return tbl;
 982 }
 983
 984 static inline uint32_t get_tbu(void)
 985 {
 986         uint32_t tbl;
 987         asm volatile("mftbu %0" : "=r" (tbl));
 988         return tbl;
 989 }
 990
 991 static inline int64_t cpu_get_real_ticks(void)
 992 {
 993     uint32_t l, h, h1;
 994     /* NOTE: we test if wrapping has occurred */
 995     do {
 996         h = get_tbu();
 997         l = get_tbl();
 998         h1 = get_tbu();
 999     } while (h != h1);
1000     return ((int64_t)h << 32) | l;
1001 }
1002
1003 #elif defined(__i386__)
1004
1005 static inline int64_t cpu_get_real_ticks(void)
1006 {
1007     int64_t val;
1008     asm volatile ("rdtsc" : "=A" (val));
1009     return val;
1010 }
1011
1012 #elif defined(__x86_64__)
1013
1014 static inline int64_t cpu_get_real_ticks(void)
1015 {
1016     uint32_t low,high;
1017     int64_t val;
1018     asm volatile("rdtsc" : "=a" (low), "=d" (high));
1019     val = high;
1020     val <<= 32;
1021     val |= low;
1022     return val;
1023 }
1024
1025 #elif defined(__hppa__)
1026
1027 static inline int64_t cpu_get_real_ticks(void)
1028 {
1029     int val;
1030     asm volatile ("mfctl %%cr16, %0" : "=r"(val));
1031     return val;
1032 }
1033
1034 #elif defined(__ia64)
1035
1036 static inline int64_t cpu_get_real_ticks(void)
1037 {
1038         int64_t val;
1039         asm volatile ("mov %0 = ar.itc" : "=r"(val) :: "memory");
1040         return val;
1041 }
1042
1043 #elif defined(__s390__)
1044
1045 static inline int64_t cpu_get_real_ticks(void)
1046 {
1047     int64_t val;
1048     asm volatile("stck 0(%1)" : "=m" (val) : "a" (&val) : "cc");
1049     return val;
1050 }
1051
1052 #elif defined(__sparc_v8plus__) || defined(__sparc_v8plusa__) || defined(__sparc_v9__)
1053
1054 static inline int64_t cpu_get_real_ticks (void)
1055 {
1056 #if     defined(_LP64)
1057         uint64_t        rval;
1058         asm volatile("rd %%tick,%0" : "=r"(rval));
1059         return rval;
1060 #else
1061         union {
1062                 uint64_t i64;
1063                 struct {
1064                         uint32_t high;
1065                         uint32_t low;
1066                 }       i32;
1067         } rval;
1068         asm volatile("rd %%tick,%1; srlx %1,32,%0"
1069                 : "=r"(rval.i32.high), "=r"(rval.i32.low));
1070         return rval.i64;
1071 #endif
1072 }
1073
1074 #elif defined(__mips__)
1075
1076 static inline int64_t cpu_get_real_ticks(void)
1077 {
1078 #if __mips_isa_rev >= 2
1079     uint32_t count;
1080     static uint32_t cyc_per_count = 0;
1081
1082     if (!cyc_per_count)
1083         __asm__ __volatile__("rdhwr %0, $3" : "=r" (cyc_per_count));
1084
1085     __asm__ __volatile__("rdhwr %1, $2" : "=r" (count));
1086     return (int64_t)(count * cyc_per_count);
1087 #else
1088     /* FIXME */
1089     static int64_t ticks = 0;
1090     return ticks++;
1091 #endif
1092 }
1093
1094 #else
1095 /* The host CPU doesn't have an easily accessible cycle counter.
1096    Just return a monotonically increasing value.  This will be
1097    totally wrong, but hopefully better than nothing.  */
1098 static inline int64_t cpu_get_real_ticks (void)
1099 {
1100     static int64_t ticks = 0;
1101     return ticks++;
1102 }
1103 #endif
1104
1105 /* profiling */
1106 #ifdef CONFIG_PROFILER
1107 static inline int64_t profile_getclock(void)
1108 {
1109     return cpu_get_real_ticks();
1110 }
1111
1112 extern int64_t kqemu_time, kqemu_time_start;
1113 extern int64_t qemu_time, qemu_time_start;
1114 extern int64_t tlb_flush_time;
1115 extern int64_t kqemu_exec_count;
1116 extern int64_t dev_time;
1117 extern int64_t kqemu_ret_int_count;
1118 extern int64_t kqemu_ret_excp_count;
1119 extern int64_t kqemu_ret_intr_count;
1120 #endif
1121
1122 #endif /* CPU_ALL_H */