cpu-all.h

   1 /*
   2  * defines common to all virtual CPUs
   3  *
   4  *  Copyright (c) 2003 Fabrice Bellard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20 #ifndef CPU_ALL_H
  21 #define CPU_ALL_H
  22
  23 #if defined(__arm__) || defined(__sparc__)
  24 #define WORDS_ALIGNED
  25 #endif
  26
  27 /* some important defines:
  28  *
  29  * WORDS_ALIGNED : if defined, the host cpu can only make word aligned
  30  * memory accesses.
  31  *
  32  * WORDS_BIGENDIAN : if defined, the host cpu is big endian and
  33  * otherwise little endian.
  34  *
  35  * (TARGET_WORDS_ALIGNED : same for target cpu (not supported yet))
  36  *
  37  * TARGET_WORDS_BIGENDIAN : same for target cpu
  38  */
  39
  40 /* NOTE: arm is horrible as double 32 bit words are stored in big endian ! */
  41 typedef union {
  42     double d;
  43 #if !defined(WORDS_BIGENDIAN) && !defined(__arm__)
  44     struct {
  45         uint32_t lower;
  46         uint32_t upper;
  47     } l;
  48 #else
  49     struct {
  50         uint32_t upper;
  51         uint32_t lower;
  52     } l;
  53 #endif
  54     uint64_t ll;
  55 } CPU_DoubleU;
  56
  57 /* CPU memory access without any memory or io remapping */
  58
  59 static inline int ldub_raw(void *ptr)
  60 {
  61     return *(uint8_t *)ptr;
  62 }
  63
  64 static inline int ldsb_raw(void *ptr)
  65 {
  66     return *(int8_t *)ptr;
  67 }
  68
  69 static inline void stb_raw(void *ptr, int v)
  70 {
  71     *(uint8_t *)ptr = v;
  72 }
  73
  74 /* NOTE: on arm, putting 2 in /proc/sys/debug/alignment so that the
  75    kernel handles unaligned load/stores may give better results, but
  76    it is a system wide setting : bad */
  77 #if !defined(TARGET_WORDS_BIGENDIAN) && (defined(WORDS_BIGENDIAN) || defined(WORDS_ALIGNED))
  78
  79 /* conservative code for little endian unaligned accesses */
  80 static inline int lduw_raw(void *ptr)
  81 {
  82 #ifdef __powerpc__
  83     int val;
  84     __asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (ptr));
  85     return val;
  86 #else
  87     uint8_t *p = ptr;
  88     return p[0] | (p[1] << 8);
  89 #endif
  90 }
  91
  92 static inline int ldsw_raw(void *ptr)
  93 {
  94 #ifdef __powerpc__
  95     int val;
  96     __asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (ptr));
  97     return (int16_t)val;
  98 #else
  99     uint8_t *p = ptr;
 100     return (int16_t)(p[0] | (p[1] << 8));
 101 #endif
 102 }
 103
 104 static inline int ldl_raw(void *ptr)
 105 {
 106 #ifdef __powerpc__
 107     int val;
 108     __asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (val) : "r" (ptr));
 109     return val;
 110 #else
 111     uint8_t *p = ptr;
 112     return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
 113 #endif
 114 }
 115
 116 static inline uint64_t ldq_raw(void *ptr)
 117 {
 118     uint8_t *p = ptr;
 119     uint32_t v1, v2;
 120     v1 = ldl_raw(p);
 121     v2 = ldl_raw(p + 4);
 122     return v1 | ((uint64_t)v2 << 32);
 123 }
 124
 125 static inline void stw_raw(void *ptr, int v)
 126 {
 127 #ifdef __powerpc__
 128     __asm__ __volatile__ ("sthbrx %1,0,%2" : "=m" (*(uint16_t *)ptr) : "r" (v), "r" (ptr));
 129 #else
 130     uint8_t *p = ptr;
 131     p[0] = v;
 132     p[1] = v >> 8;
 133 #endif
 134 }
 135
 136 static inline void stl_raw(void *ptr, int v)
 137 {
 138 #ifdef __powerpc__
 139     __asm__ __volatile__ ("stwbrx %1,0,%2" : "=m" (*(uint32_t *)ptr) : "r" (v), "r" (ptr));
 140 #else
 141     uint8_t *p = ptr;
 142     p[0] = v;
 143     p[1] = v >> 8;
 144     p[2] = v >> 16;
 145     p[3] = v >> 24;
 146 #endif
 147 }
 148
 149 static inline void stq_raw(void *ptr, uint64_t v)
 150 {
 151     uint8_t *p = ptr;
 152     stl_raw(p, (uint32_t)v);
 153     stl_raw(p + 4, v >> 32);
 154 }
 155
 156 /* float access */
 157
 158 static inline float ldfl_raw(void *ptr)
 159 {
 160     union {
 161         float f;
 162         uint32_t i;
 163     } u;
 164     u.i = ldl_raw(ptr);
 165     return u.f;
 166 }
 167
 168 static inline void stfl_raw(void *ptr, float v)
 169 {
 170     union {
 171         float f;
 172         uint32_t i;
 173     } u;
 174     u.f = v;
 175     stl_raw(ptr, u.i);
 176 }
 177
 178 static inline double ldfq_raw(void *ptr)
 179 {
 180     CPU_DoubleU u;
 181     u.l.lower = ldl_raw(ptr);
 182     u.l.upper = ldl_raw(ptr + 4);
 183     return u.d;
 184 }
 185
 186 static inline void stfq_raw(void *ptr, double v)
 187 {
 188     CPU_DoubleU u;
 189     u.d = v;
 190     stl_raw(ptr, u.l.lower);
 191     stl_raw(ptr + 4, u.l.upper);
 192 }
 193
 194 #elif defined(TARGET_WORDS_BIGENDIAN) && (!defined(WORDS_BIGENDIAN) || defined(WORDS_ALIGNED))
 195
 196 static inline int lduw_raw(void *ptr)
 197 {
 198     uint8_t *b = (uint8_t *) ptr;
 199     return (b[0]<<8|b[1]);
 200 }
 201
 202 static inline int ldsw_raw(void *ptr)
 203 {
 204     int8_t *b = (int8_t *) ptr;
 205     return (b[0]<<8|b[1]);
 206 }
 207
 208 static inline int ldl_raw(void *ptr)
 209 {
 210     uint8_t *b = (uint8_t *) ptr;
 211     return (b[0]<<24|b[1]<<16|b[2]<<8|b[3]);
 212 }
 213
 214 static inline uint64_t ldq_raw(void *ptr)
 215 {
 216     uint32_t a,b;
 217     a = ldl_raw(ptr);
 218     b = ldl_raw(ptr+4);
 219     return (((uint64_t)a<<32)|b);
 220 }
 221
 222 static inline void stw_raw(void *ptr, int v)
 223 {
 224     uint8_t *d = (uint8_t *) ptr;
 225     d[0] = v >> 8;
 226     d[1] = v;
 227 }
 228
 229 static inline void stl_raw(void *ptr, int v)
 230 {
 231     uint8_t *d = (uint8_t *) ptr;
 232     d[0] = v >> 24;
 233     d[1] = v >> 16;
 234     d[2] = v >> 8;
 235     d[3] = v;
 236 }
 237
 238 static inline void stq_raw(void *ptr, uint64_t v)
 239 {
 240     stl_raw(ptr, v >> 32);
 241     stl_raw(ptr + 4, v);
 242 }
 243
 244 /* float access */
 245
 246 static inline float ldfl_raw(void *ptr)
 247 {
 248     union {
 249         float f;
 250         uint32_t i;
 251     } u;
 252     u.i = ldl_raw(ptr);
 253     return u.f;
 254 }
 255
 256 static inline void stfl_raw(void *ptr, float v)
 257 {
 258     union {
 259         float f;
 260         uint32_t i;
 261     } u;
 262     u.f = v;
 263     stl_raw(ptr, u.i);
 264 }
 265
 266 static inline double ldfq_raw(void *ptr)
 267 {
 268     CPU_DoubleU u;
 269     u.l.upper = ldl_raw(ptr);
 270     u.l.lower = ldl_raw(ptr + 4);
 271     return u.d;
 272 }
 273
 274 static inline void stfq_raw(void *ptr, double v)
 275 {
 276     CPU_DoubleU u;
 277     u.d = v;
 278     stl_raw(ptr, u.l.upper);
 279     stl_raw(ptr + 4, u.l.lower);
 280 }
 281
 282 #else
 283
 284 static inline int lduw_raw(void *ptr)
 285 {
 286     return *(uint16_t *)ptr;
 287 }
 288
 289 static inline int ldsw_raw(void *ptr)
 290 {
 291     return *(int16_t *)ptr;
 292 }
 293
 294 static inline int ldl_raw(void *ptr)
 295 {
 296     return *(uint32_t *)ptr;
 297 }
 298
 299 static inline uint64_t ldq_raw(void *ptr)
 300 {
 301     return *(uint64_t *)ptr;
 302 }
 303
 304 static inline void stw_raw(void *ptr, int v)
 305 {
 306     *(uint16_t *)ptr = v;
 307 }
 308
 309 static inline void stl_raw(void *ptr, int v)
 310 {
 311     *(uint32_t *)ptr = v;
 312 }
 313
 314 static inline void stq_raw(void *ptr, uint64_t v)
 315 {
 316     *(uint64_t *)ptr = v;
 317 }
 318
 319 /* float access */
 320
 321 static inline float ldfl_raw(void *ptr)
 322 {
 323     return *(float *)ptr;
 324 }
 325
 326 static inline double ldfq_raw(void *ptr)
 327 {
 328     return *(double *)ptr;
 329 }
 330
 331 static inline void stfl_raw(void *ptr, float v)
 332 {
 333     *(float *)ptr = v;
 334 }
 335
 336 static inline void stfq_raw(void *ptr, double v)
 337 {
 338     *(double *)ptr = v;
 339 }
 340 #endif
 341
 342 /* MMU memory access macros */
 343
 344 #if defined(CONFIG_USER_ONLY)
 345
 346 /* if user mode, no other memory access functions */
 347 #define ldub(p) ldub_raw(p)
 348 #define ldsb(p) ldsb_raw(p)
 349 #define lduw(p) lduw_raw(p)
 350 #define ldsw(p) ldsw_raw(p)
 351 #define ldl(p) ldl_raw(p)
 352 #define ldq(p) ldq_raw(p)
 353 #define ldfl(p) ldfl_raw(p)
 354 #define ldfq(p) ldfq_raw(p)
 355 #define stb(p, v) stb_raw(p, v)
 356 #define stw(p, v) stw_raw(p, v)
 357 #define stl(p, v) stl_raw(p, v)
 358 #define stq(p, v) stq_raw(p, v)
 359 #define stfl(p, v) stfl_raw(p, v)
 360 #define stfq(p, v) stfq_raw(p, v)
 361
 362 #define ldub_code(p) ldub_raw(p)
 363 #define ldsb_code(p) ldsb_raw(p)
 364 #define lduw_code(p) lduw_raw(p)
 365 #define ldsw_code(p) ldsw_raw(p)
 366 #define ldl_code(p) ldl_raw(p)
 367
 368 #define ldub_kernel(p) ldub_raw(p)
 369 #define ldsb_kernel(p) ldsb_raw(p)
 370 #define lduw_kernel(p) lduw_raw(p)
 371 #define ldsw_kernel(p) ldsw_raw(p)
 372 #define ldl_kernel(p) ldl_raw(p)
 373 #define ldfl_kernel(p) ldfl_raw(p)
 374 #define ldfq_kernel(p) ldfq_raw(p)
 375 #define stb_kernel(p, v) stb_raw(p, v)
 376 #define stw_kernel(p, v) stw_raw(p, v)
 377 #define stl_kernel(p, v) stl_raw(p, v)
 378 #define stq_kernel(p, v) stq_raw(p, v)
 379 #define stfl_kernel(p, v) stfl_raw(p, v)
 380 #define stfq_kernel(p, vt) stfq_raw(p, v)
 381
 382 #endif /* defined(CONFIG_USER_ONLY) */
 383
 384 /* page related stuff */
 385
 386 #define TARGET_PAGE_SIZE (1 << TARGET_PAGE_BITS)
 387 #define TARGET_PAGE_MASK ~(TARGET_PAGE_SIZE - 1)
 388 #define TARGET_PAGE_ALIGN(addr) (((addr) + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK)
 389
 390 extern unsigned long real_host_page_size;
 391 extern unsigned long host_page_bits;
 392 extern unsigned long host_page_size;
 393 extern unsigned long host_page_mask;
 394
 395 #define HOST_PAGE_ALIGN(addr) (((addr) + host_page_size - 1) & host_page_mask)
 396
 397 /* same as PROT_xxx */
 398 #define PAGE_READ      0x0001
 399 #define PAGE_WRITE     0x0002
 400 #define PAGE_EXEC      0x0004
 401 #define PAGE_BITS      (PAGE_READ | PAGE_WRITE | PAGE_EXEC)
 402 #define PAGE_VALID     0x0008
 403 /* original state of the write flag (used when tracking self-modifying
 404    code */
 405 #define PAGE_WRITE_ORG 0x0010
 406
 407 void page_dump(FILE *f);
 408 int page_get_flags(unsigned long address);
 409 void page_set_flags(unsigned long start, unsigned long end, int flags);
 410 void page_unprotect_range(uint8_t *data, unsigned long data_size);
 411
 412 #define SINGLE_CPU_DEFINES
 413 #ifdef SINGLE_CPU_DEFINES
 414
 415 #if defined(TARGET_I386)
 416
 417 #define CPUState CPUX86State
 418 #define cpu_init cpu_x86_init
 419 #define cpu_exec cpu_x86_exec
 420 #define cpu_gen_code cpu_x86_gen_code
 421 #define cpu_interrupt cpu_x86_interrupt
 422 #define cpu_signal_handler cpu_x86_signal_handler
 423
 424 #elif defined(TARGET_ARM)
 425
 426 #define CPUState CPUARMState
 427 #define cpu_init cpu_arm_init
 428 #define cpu_exec cpu_arm_exec
 429 #define cpu_gen_code cpu_arm_gen_code
 430 #define cpu_interrupt cpu_arm_interrupt
 431 #define cpu_signal_handler cpu_arm_signal_handler
 432
 433 #elif defined(TARGET_SPARC)
 434
 435 #define CPUState CPUSPARCState
 436 #define cpu_init cpu_sparc_init
 437 #define cpu_exec cpu_sparc_exec
 438 #define cpu_gen_code cpu_sparc_gen_code
 439 #define cpu_interrupt cpu_sparc_interrupt
 440 #define cpu_signal_handler cpu_sparc_signal_handler
 441
 442 #elif defined(TARGET_PPC)
 443
 444 #define CPUState CPUPPCState
 445 #define cpu_init cpu_ppc_init
 446 #define cpu_exec cpu_ppc_exec
 447 #define cpu_gen_code cpu_ppc_gen_code
 448 #define cpu_interrupt cpu_ppc_interrupt
 449 #define cpu_signal_handler cpu_ppc_signal_handler
 450
 451 #else
 452
 453 #error unsupported target CPU
 454
 455 #endif
 456
 457 #endif /* SINGLE_CPU_DEFINES */
 458
 459 #define DEFAULT_GDBSTUB_PORT 1234
 460
 461 void cpu_abort(CPUState *env, const char *fmt, ...);
 462 extern CPUState *cpu_single_env;
 463
 464 #define CPU_INTERRUPT_EXIT 0x01 /* wants exit from main loop */
 465 #define CPU_INTERRUPT_HARD 0x02 /* hardware interrupt pending */
 466 void cpu_interrupt(CPUState *s, int mask);
 467
 468 int cpu_breakpoint_insert(CPUState *env, uint32_t pc);
 469 int cpu_breakpoint_remove(CPUState *env, uint32_t pc);
 470 void cpu_single_step(CPUState *env, int enabled);
 471
 472 #define CPU_LOG_ALL 1
 473 void cpu_set_log(int log_flags);
 474 void cpu_set_log_filename(const char *filename);
 475
 476 /* memory API */
 477
 478 typedef void CPUWriteMemoryFunc(uint32_t addr, uint32_t value);
 479 typedef uint32_t CPUReadMemoryFunc(uint32_t addr);
 480
 481 void cpu_register_physical_memory(unsigned long start_addr, unsigned long size,
 482                                   long phys_offset);
 483 int cpu_register_io_memory(int io_index,
 484                            CPUReadMemoryFunc **mem_read,
 485                            CPUWriteMemoryFunc **mem_write);
 486
 487 /* gdb stub API */
 488 extern int gdbstub_fd;
 489 CPUState *cpu_gdbstub_get_env(void *opaque);
 490 int cpu_gdbstub(void *opaque, int (*main_loop)(void *opaque), int port);
 491
 492 #endif /* CPU_ALL_H */