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 /* all CPU memory access use these macros */
  24 static inline int ldub(void *ptr)
  25 {
  26     return *(uint8_t *)ptr;
  27 }
  28
  29 static inline int ldsb(void *ptr)
  30 {
  31     return *(int8_t *)ptr;
  32 }
  33
  34 static inline void stb(void *ptr, int v)
  35 {
  36     *(uint8_t *)ptr = v;
  37 }
  38
  39 /* NOTE: on arm, putting 2 in /proc/sys/debug/alignment so that the
  40    kernel handles unaligned load/stores may give better results, but
  41    it is a system wide setting : bad */
  42 #if defined(WORDS_BIGENDIAN) || defined(__arm__)
  43
  44 /* conservative code for little endian unaligned accesses */
  45 static inline int lduw(void *ptr)
  46 {
  47 #ifdef __powerpc__
  48     int val;
  49     __asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (ptr));
  50     return val;
  51 #else
  52     uint8_t *p = ptr;
  53     return p[0] | (p[1] << 8);
  54 #endif
  55 }
  56
  57 static inline int ldsw(void *ptr)
  58 {
  59 #ifdef __powerpc__
  60     int val;
  61     __asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (ptr));
  62     return (int16_t)val;
  63 #else
  64     uint8_t *p = ptr;
  65     return (int16_t)(p[0] | (p[1] << 8));
  66 #endif
  67 }
  68
  69 static inline int ldl(void *ptr)
  70 {
  71 #ifdef __powerpc__
  72     int val;
  73     __asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (val) : "r" (ptr));
  74     return val;
  75 #else
  76     uint8_t *p = ptr;
  77     return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
  78 #endif
  79 }
  80
  81 static inline uint64_t ldq(void *ptr)
  82 {
  83     uint8_t *p = ptr;
  84     uint32_t v1, v2;
  85     v1 = ldl(p);
  86     v2 = ldl(p + 4);
  87     return v1 | ((uint64_t)v2 << 32);
  88 }
  89
  90 static inline void stw(void *ptr, int v)
  91 {
  92 #ifdef __powerpc__
  93     __asm__ __volatile__ ("sthbrx %1,0,%2" : "=m" (*(uint16_t *)ptr) : "r" (v), "r" (ptr));
  94 #else
  95     uint8_t *p = ptr;
  96     p[0] = v;
  97     p[1] = v >> 8;
  98 #endif
  99 }
 100
 101 static inline void stl(void *ptr, int v)
 102 {
 103 #ifdef __powerpc__
 104     __asm__ __volatile__ ("stwbrx %1,0,%2" : "=m" (*(uint32_t *)ptr) : "r" (v), "r" (ptr));
 105 #else
 106     uint8_t *p = ptr;
 107     p[0] = v;
 108     p[1] = v >> 8;
 109     p[2] = v >> 16;
 110     p[3] = v >> 24;
 111 #endif
 112 }
 113
 114 static inline void stq(void *ptr, uint64_t v)
 115 {
 116     uint8_t *p = ptr;
 117     stl(p, (uint32_t)v);
 118     stl(p + 4, v >> 32);
 119 }
 120
 121 /* float access */
 122
 123 static inline float ldfl(void *ptr)
 124 {
 125     union {
 126         float f;
 127         uint32_t i;
 128     } u;
 129     u.i = ldl(ptr);
 130     return u.f;
 131 }
 132
 133 static inline void stfl(void *ptr, float v)
 134 {
 135     union {
 136         float f;
 137         uint32_t i;
 138     } u;
 139     u.f = v;
 140     stl(ptr, u.i);
 141 }
 142
 143
 144 #if defined(__arm__) && !defined(WORDS_BIGENDIAN)
 145
 146 /* NOTE: arm is horrible as double 32 bit words are stored in big endian ! */
 147 static inline double ldfq(void *ptr)
 148 {
 149     union {
 150         double d;
 151         uint32_t tab[2];
 152     } u;
 153     u.tab[1] = ldl(ptr);
 154     u.tab[0] = ldl(ptr + 4);
 155     return u.d;
 156 }
 157
 158 static inline void stfq(void *ptr, double v)
 159 {
 160     union {
 161         double d;
 162         uint32_t tab[2];
 163     } u;
 164     u.d = v;
 165     stl(ptr, u.tab[1]);
 166     stl(ptr + 4, u.tab[0]);
 167 }
 168
 169 #else
 170 static inline double ldfq(void *ptr)
 171 {
 172     union {
 173         double d;
 174         uint64_t i;
 175     } u;
 176     u.i = ldq(ptr);
 177     return u.d;
 178 }
 179
 180 static inline void stfq(void *ptr, double v)
 181 {
 182     union {
 183         double d;
 184         uint64_t i;
 185     } u;
 186     u.d = v;
 187     stq(ptr, u.i);
 188 }
 189 #endif
 190
 191 #elif defined(TARGET_WORDS_BIGENDIAN) && !defined(WORDS_BIGENDIAN)
 192
 193 static inline int lduw(void *ptr)
 194 {
 195     uint8_t *b = (uint8_t *) ptr;
 196     return (b[0]<<8|b[1]);
 197 }
 198
 199 static inline int ldsw(void *ptr)
 200 {
 201     int8_t *b = (int8_t *) ptr;
 202     return (b[0]<<8|b[1]);
 203 }
 204
 205 static inline int ldl(void *ptr)
 206 {
 207     uint8_t *b = (uint8_t *) ptr;
 208     return (b[0]<<24|b[1]<<16|b[2]<<8|b[3]);
 209 }
 210
 211 static inline uint64_t ldq(void *ptr)
 212 {
 213     uint32_t a,b;
 214     a = ldl (ptr);
 215     b = ldl (ptr+4);
 216     return (((uint64_t)a<<32)|b);
 217 }
 218
 219 static inline void stw(void *ptr, int v)
 220 {
 221     uint8_t *d = (uint8_t *) ptr;
 222     d[0] = v >> 8;
 223     d[1] = v;
 224 }
 225
 226 static inline void stl(void *ptr, int v)
 227 {
 228     uint8_t *d = (uint8_t *) ptr;
 229     d[0] = v >> 24;
 230     d[1] = v >> 16;
 231     d[2] = v >> 8;
 232     d[3] = v;
 233 }
 234
 235 static inline void stq(void *ptr, uint64_t v)
 236 {
 237     stl (ptr, v);
 238     stl (ptr+4, v >> 32);
 239 }
 240
 241 #else
 242
 243 static inline int lduw(void *ptr)
 244 {
 245     return *(uint16_t *)ptr;
 246 }
 247
 248 static inline int ldsw(void *ptr)
 249 {
 250     return *(int16_t *)ptr;
 251 }
 252
 253 static inline int ldl(void *ptr)
 254 {
 255     return *(uint32_t *)ptr;
 256 }
 257
 258 static inline uint64_t ldq(void *ptr)
 259 {
 260     return *(uint64_t *)ptr;
 261 }
 262
 263 static inline void stw(void *ptr, int v)
 264 {
 265     *(uint16_t *)ptr = v;
 266 }
 267
 268 static inline void stl(void *ptr, int v)
 269 {
 270     *(uint32_t *)ptr = v;
 271 }
 272
 273 static inline void stq(void *ptr, uint64_t v)
 274 {
 275     *(uint64_t *)ptr = v;
 276 }
 277
 278 /* float access */
 279
 280 static inline float ldfl(void *ptr)
 281 {
 282     return *(float *)ptr;
 283 }
 284
 285 static inline double ldfq(void *ptr)
 286 {
 287     return *(double *)ptr;
 288 }
 289
 290 static inline void stfl(void *ptr, float v)
 291 {
 292     *(float *)ptr = v;
 293 }
 294
 295 static inline void stfq(void *ptr, double v)
 296 {
 297     *(double *)ptr = v;
 298 }
 299 #endif
 300
 301 /* page related stuff */
 302
 303 #define TARGET_PAGE_SIZE (1 << TARGET_PAGE_BITS)
 304 #define TARGET_PAGE_MASK ~(TARGET_PAGE_SIZE - 1)
 305 #define TARGET_PAGE_ALIGN(addr) (((addr) + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK)
 306
 307 extern unsigned long real_host_page_size;
 308 extern unsigned long host_page_bits;
 309 extern unsigned long host_page_size;
 310 extern unsigned long host_page_mask;
 311
 312 #define HOST_PAGE_ALIGN(addr) (((addr) + host_page_size - 1) & host_page_mask)
 313
 314 /* same as PROT_xxx */
 315 #define PAGE_READ      0x0001
 316 #define PAGE_WRITE     0x0002
 317 #define PAGE_EXEC      0x0004
 318 #define PAGE_BITS      (PAGE_READ | PAGE_WRITE | PAGE_EXEC)
 319 #define PAGE_VALID     0x0008
 320 /* original state of the write flag (used when tracking self-modifying
 321    code */
 322 #define PAGE_WRITE_ORG 0x0010
 323
 324 void page_dump(FILE *f);
 325 int page_get_flags(unsigned long address);
 326 void page_set_flags(unsigned long start, unsigned long end, int flags);
 327 void page_unprotect_range(uint8_t *data, unsigned long data_size);
 328
 329 #define SINGLE_CPU_DEFINES
 330 #ifdef SINGLE_CPU_DEFINES
 331
 332 #if defined(TARGET_I386)
 333
 334 #define CPUState CPUX86State
 335 #define cpu_init cpu_x86_init
 336 #define cpu_exec cpu_x86_exec
 337 #define cpu_gen_code cpu_x86_gen_code
 338 #define cpu_interrupt cpu_x86_interrupt
 339 #define cpu_signal_handler cpu_x86_signal_handler
 340
 341 #elif defined(TARGET_ARM)
 342
 343 #define CPUState CPUARMState
 344 #define cpu_init cpu_arm_init
 345 #define cpu_exec cpu_arm_exec
 346 #define cpu_gen_code cpu_arm_gen_code
 347 #define cpu_interrupt cpu_arm_interrupt
 348 #define cpu_signal_handler cpu_arm_signal_handler
 349
 350 #elif defined(TARGET_SPARC)
 351
 352 #define CPUState CPUSPARCState
 353 #define cpu_init cpu_sparc_init
 354 #define cpu_exec cpu_sparc_exec
 355 #define cpu_gen_code cpu_sparc_gen_code
 356 #define cpu_interrupt cpu_sparc_interrupt
 357 #define cpu_signal_handler cpu_sparc_signal_handler
 358
 359 #else
 360
 361 #error unsupported target CPU
 362
 363 #endif
 364
 365 #endif /* SINGLE_CPU_DEFINES */
 366
 367 #define DEFAULT_GDBSTUB_PORT 1234
 368
 369 void cpu_abort(CPUState *env, const char *fmt, ...);
 370 extern CPUState *cpu_single_env;
 371
 372 #define CPU_INTERRUPT_EXIT 0x01 /* wants exit from main loop */
 373 #define CPU_INTERRUPT_HARD 0x02 /* hardware interrupt pending */
 374 void cpu_interrupt(CPUState *s, int mask);
 375
 376 int cpu_breakpoint_insert(CPUState *env, uint32_t pc);
 377 int cpu_breakpoint_remove(CPUState *env, uint32_t pc);
 378 void cpu_single_step(CPUState *env, int enabled);
 379
 380 #define CPU_LOG_ALL 1
 381 void cpu_set_log(int log_flags);
 382 void cpu_set_log_filename(const char *filename);
 383
 384 /* memory API */
 385
 386 typedef void CPUWriteMemoryFunc(uint32_t addr, uint32_t value);
 387 typedef uint32_t CPUReadMemoryFunc(uint32_t addr);
 388
 389 void cpu_register_physical_memory(unsigned long start_addr, unsigned long size,
 390                                   long phys_offset);
 391 int cpu_register_io_memory(int io_index,
 392                            CPUReadMemoryFunc **mem_read,
 393                            CPUWriteMemoryFunc **mem_write);
 394
 395 /* gdb stub API */
 396 extern int gdbstub_fd;
 397 CPUState *cpu_gdbstub_get_env(void *opaque);
 398 int cpu_gdbstub(void *opaque, int (*main_loop)(void *opaque), int port);
 399
 400 #endif /* CPU_ALL_H */