linux-user/qemu.h

   1 #ifndef QEMU_H
   2 #define QEMU_H
   3
   4 #include "hostdep.h"
   5 #include "cpu.h"
   6 #include "exec/exec-all.h"
   7 #include "exec/cpu_ldst.h"
   8
   9 #undef DEBUG_REMAP
  10 #ifdef DEBUG_REMAP
  11 #endif /* DEBUG_REMAP */
  12
  13 #include "exec/user/abitypes.h"
  14
  15 #include "exec/user/thunk.h"
  16 #include "syscall_defs.h"
  17 #include "target_syscall.h"
  18 #include "exec/gdbstub.h"
  19 #include "qemu/queue.h"
  20
  21 #define THREAD __thread
  22
  23 /* This struct is used to hold certain information about the image.
  24  * Basically, it replicates in user space what would be certain
  25  * task_struct fields in the kernel
  26  */
  27 struct image_info {
  28         abi_ulong       load_bias;
  29         abi_ulong       load_addr;
  30         abi_ulong       start_code;
  31         abi_ulong       end_code;
  32         abi_ulong       start_data;
  33         abi_ulong       end_data;
  34         abi_ulong       start_brk;
  35         abi_ulong       brk;
  36         abi_ulong       start_mmap;
  37         abi_ulong       start_stack;
  38         abi_ulong       stack_limit;
  39         abi_ulong       entry;
  40         abi_ulong       code_offset;
  41         abi_ulong       data_offset;
  42         abi_ulong       saved_auxv;
  43         abi_ulong       auxv_len;
  44         abi_ulong       arg_start;
  45         abi_ulong       arg_end;
  46         uint32_t        elf_flags;
  47         int             personality;
  48 #ifdef CONFIG_USE_FDPIC
  49         abi_ulong       loadmap_addr;
  50         uint16_t        nsegs;
  51         void           *loadsegs;
  52         abi_ulong       pt_dynamic_addr;
  53         struct image_info *other_info;
  54 #endif
  55 };
  56
  57 #ifdef TARGET_I386
  58 /* Information about the current linux thread */
  59 struct vm86_saved_state {
  60     uint32_t eax; /* return code */
  61     uint32_t ebx;
  62     uint32_t ecx;
  63     uint32_t edx;
  64     uint32_t esi;
  65     uint32_t edi;
  66     uint32_t ebp;
  67     uint32_t esp;
  68     uint32_t eflags;
  69     uint32_t eip;
  70     uint16_t cs, ss, ds, es, fs, gs;
  71 };
  72 #endif
  73
  74 #if defined(TARGET_ARM) && defined(TARGET_ABI32)
  75 /* FPU emulator */
  76 #include "nwfpe/fpa11.h"
  77 #endif
  78
  79 #define MAX_SIGQUEUE_SIZE 1024
  80
  81 struct sigqueue {
  82     struct sigqueue *next;
  83     target_siginfo_t info;
  84 };
  85
  86 struct emulated_sigtable {
  87     int pending; /* true if signal is pending */
  88     struct sigqueue *first;
  89     struct sigqueue info; /* in order to always have memory for the
  90                              first signal, we put it here */
  91 };
  92
  93 /* NOTE: we force a big alignment so that the stack stored after is
  94    aligned too */
  95 typedef struct TaskState {
  96     pid_t ts_tid;     /* tid (or pid) of this task */
  97 #ifdef TARGET_ARM
  98 # ifdef TARGET_ABI32
  99     /* FPA state */
 100     FPA11 fpa;
 101 # endif
 102     int swi_errno;
 103 #endif
 104 #ifdef TARGET_UNICORE32
 105     int swi_errno;
 106 #endif
 107 #if defined(TARGET_I386) && !defined(TARGET_X86_64)
 108     abi_ulong target_v86;
 109     struct vm86_saved_state vm86_saved_regs;
 110     struct target_vm86plus_struct vm86plus;
 111     uint32_t v86flags;
 112     uint32_t v86mask;
 113 #endif
 114     abi_ulong child_tidptr;
 115 #ifdef TARGET_M68K
 116     int sim_syscalls;
 117     abi_ulong tp_value;
 118 #endif
 119 #if defined(TARGET_ARM) || defined(TARGET_M68K) || defined(TARGET_UNICORE32)
 120     /* Extra fields for semihosted binaries.  */
 121     uint32_t heap_base;
 122     uint32_t heap_limit;
 123 #endif
 124     uint32_t stack_base;
 125     int used; /* non zero if used */
 126     bool sigsegv_blocked; /* SIGSEGV blocked by guest */
 127     struct image_info *info;
 128     struct linux_binprm *bprm;
 129
 130     struct emulated_sigtable sigtab[TARGET_NSIG];
 131     struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */
 132     struct sigqueue *first_free; /* first free siginfo queue entry */
 133     int signal_pending; /* non zero if a signal may be pending */
 134 } __attribute__((aligned(16))) TaskState;
 135
 136 extern char *exec_path;
 137 void init_task_state(TaskState *ts);
 138 void task_settid(TaskState *);
 139 void stop_all_tasks(void);
 140 extern const char *qemu_uname_release;
 141 extern unsigned long mmap_min_addr;
 142
 143 /* ??? See if we can avoid exposing so much of the loader internals.  */
 144
 145 /* Read a good amount of data initially, to hopefully get all the
 146    program headers loaded.  */
 147 #define BPRM_BUF_SIZE  1024
 148
 149 /*
 150  * This structure is used to hold the arguments that are
 151  * used when loading binaries.
 152  */
 153 struct linux_binprm {
 154         char buf[BPRM_BUF_SIZE] __attribute__((aligned));
 155         abi_ulong p;
 156         int fd;
 157         int e_uid, e_gid;
 158         int argc, envc;
 159         char **argv;
 160         char **envp;
 161         char * filename;        /* Name of binary */
 162         int (*core_dump)(int, const CPUArchState *); /* coredump routine */
 163 };
 164
 165 void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
 166 abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
 167                               abi_ulong stringp, int push_ptr);
 168 int loader_exec(int fdexec, const char *filename, char **argv, char **envp,
 169              struct target_pt_regs * regs, struct image_info *infop,
 170              struct linux_binprm *);
 171
 172 int load_elf_binary(struct linux_binprm *bprm, struct image_info *info);
 173 int load_flt_binary(struct linux_binprm *bprm, struct image_info *info);
 174
 175 abi_long memcpy_to_target(abi_ulong dest, const void *src,
 176                           unsigned long len);
 177 void target_set_brk(abi_ulong new_brk);
 178 abi_long do_brk(abi_ulong new_brk);
 179 void syscall_init(void);
 180 abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
 181                     abi_long arg2, abi_long arg3, abi_long arg4,
 182                     abi_long arg5, abi_long arg6, abi_long arg7,
 183                     abi_long arg8);
 184 void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
 185 extern THREAD CPUState *thread_cpu;
 186 void cpu_loop(CPUArchState *env);
 187 char *target_strerror(int err);
 188 int get_osversion(void);
 189 void init_qemu_uname_release(void);
 190 void fork_start(void);
 191 void fork_end(int child);
 192
 193 /* Creates the initial guest address space in the host memory space using
 194  * the given host start address hint and size.  The guest_start parameter
 195  * specifies the start address of the guest space.  guest_base will be the
 196  * difference between the host start address computed by this function and
 197  * guest_start.  If fixed is specified, then the mapped address space must
 198  * start at host_start.  The real start address of the mapped memory space is
 199  * returned or -1 if there was an error.
 200  */
 201 unsigned long init_guest_space(unsigned long host_start,
 202                                unsigned long host_size,
 203                                unsigned long guest_start,
 204                                bool fixed);
 205
 206 #include "qemu/log.h"
 207
 208 /* safe_syscall.S */
 209
 210 /**
 211  * safe_syscall:
 212  * @int number: number of system call to make
 213  * ...: arguments to the system call
 214  *
 215  * Call a system call if guest signal not pending.
 216  * This has the same API as the libc syscall() function, except that it
 217  * may return -1 with errno == TARGET_ERESTARTSYS if a signal was pending.
 218  *
 219  * Returns: the system call result, or -1 with an error code in errno
 220  * (Errnos are host errnos; we rely on TARGET_ERESTARTSYS not clashing
 221  * with any of the host errno values.)
 222  */
 223
 224 /* A guide to using safe_syscall() to handle interactions between guest
 225  * syscalls and guest signals:
 226  *
 227  * Guest syscalls come in two flavours:
 228  *
 229  * (1) Non-interruptible syscalls
 230  *
 231  * These are guest syscalls that never get interrupted by signals and
 232  * so never return EINTR. They can be implemented straightforwardly in
 233  * QEMU: just make sure that if the implementation code has to make any
 234  * blocking calls that those calls are retried if they return EINTR.
 235  * It's also OK to implement these with safe_syscall, though it will be
 236  * a little less efficient if a signal is delivered at the 'wrong' moment.
 237  *
 238  * (2) Interruptible syscalls
 239  *
 240  * These are guest syscalls that can be interrupted by signals and
 241  * for which we need to either return EINTR or arrange for the guest
 242  * syscall to be restarted. This category includes both syscalls which
 243  * always restart (and in the kernel return -ERESTARTNOINTR), ones
 244  * which only restart if there is no handler (kernel returns -ERESTARTNOHAND
 245  * or -ERESTART_RESTARTBLOCK), and the most common kind which restart
 246  * if the handler was registered with SA_RESTART (kernel returns
 247  * -ERESTARTSYS). System calls which are only interruptible in some
 248  * situations (like 'open') also need to be handled this way.
 249  *
 250  * Here it is important that the host syscall is made
 251  * via this safe_syscall() function, and *not* via the host libc.
 252  * If the host libc is used then the implementation will appear to work
 253  * most of the time, but there will be a race condition where a
 254  * signal could arrive just before we make the host syscall inside libc,
 255  * and then then guest syscall will not correctly be interrupted.
 256  * Instead the implementation of the guest syscall can use the safe_syscall
 257  * function but otherwise just return the result or errno in the usual
 258  * way; the main loop code will take care of restarting the syscall
 259  * if appropriate.
 260  *
 261  * (If the implementation needs to make multiple host syscalls this is
 262  * OK; any which might really block must be via safe_syscall(); for those
 263  * which are only technically blocking (ie which we know in practice won't
 264  * stay in the host kernel indefinitely) it's OK to use libc if necessary.
 265  * You must be able to cope with backing out correctly if some safe_syscall
 266  * you make in the implementation returns either -TARGET_ERESTARTSYS or
 267  * EINTR though.)
 268  *
 269  *
 270  * How and why the safe_syscall implementation works:
 271  *
 272  * The basic setup is that we make the host syscall via a known
 273  * section of host native assembly. If a signal occurs, our signal
 274  * handler checks the interrupted host PC against the addresse of that
 275  * known section. If the PC is before or at the address of the syscall
 276  * instruction then we change the PC to point at a "return
 277  * -TARGET_ERESTARTSYS" code path instead, and then exit the signal handler
 278  * (causing the safe_syscall() call to immediately return that value).
 279  * Then in the main.c loop if we see this magic return value we adjust
 280  * the guest PC to wind it back to before the system call, and invoke
 281  * the guest signal handler as usual.
 282  *
 283  * This winding-back will happen in two cases:
 284  * (1) signal came in just before we took the host syscall (a race);
 285  *   in this case we'll take the guest signal and have another go
 286  *   at the syscall afterwards, and this is indistinguishable for the
 287  *   guest from the timing having been different such that the guest
 288  *   signal really did win the race
 289  * (2) signal came in while the host syscall was blocking, and the
 290  *   host kernel decided the syscall should be restarted;
 291  *   in this case we want to restart the guest syscall also, and so
 292  *   rewinding is the right thing. (Note that "restart" semantics mean
 293  *   "first call the signal handler, then reattempt the syscall".)
 294  * The other situation to consider is when a signal came in while the
 295  * host syscall was blocking, and the host kernel decided that the syscall
 296  * should not be restarted; in this case QEMU's host signal handler will
 297  * be invoked with the PC pointing just after the syscall instruction,
 298  * with registers indicating an EINTR return; the special code in the
 299  * handler will not kick in, and we will return EINTR to the guest as
 300  * we should.
 301  *
 302  * Notice that we can leave the host kernel to make the decision for
 303  * us about whether to do a restart of the syscall or not; we do not
 304  * need to check SA_RESTART flags in QEMU or distinguish the various
 305  * kinds of restartability.
 306  */
 307 #ifdef HAVE_SAFE_SYSCALL
 308 /* The core part of this function is implemented in assembly */
 309 extern long safe_syscall_base(int *pending, long number, ...);
 310
 311 #define safe_syscall(...)                                               \
 312     ({                                                                  \
 313         long ret_;                                                      \
 314         int *psp_ = &((TaskState *)thread_cpu->opaque)->signal_pending; \
 315         ret_ = safe_syscall_base(psp_, __VA_ARGS__);                    \
 316         if (is_error(ret_)) {                                           \
 317             errno = -ret_;                                              \
 318             ret_ = -1;                                                  \
 319         }                                                               \
 320         ret_;                                                           \
 321     })
 322
 323 #else
 324
 325 /* Fallback for architectures which don't yet provide a safe-syscall assembly
 326  * fragment; note that this is racy!
 327  * This should go away when all host architectures have been updated.
 328  */
 329 #define safe_syscall syscall
 330
 331 #endif
 332
 333 /* syscall.c */
 334 int host_to_target_waitstatus(int status);
 335
 336 /* strace.c */
 337 void print_syscall(int num,
 338                    abi_long arg1, abi_long arg2, abi_long arg3,
 339                    abi_long arg4, abi_long arg5, abi_long arg6);
 340 void print_syscall_ret(int num, abi_long arg1);
 341 extern int do_strace;
 342
 343 /* signal.c */
 344 void process_pending_signals(CPUArchState *cpu_env);
 345 void signal_init(void);
 346 int queue_signal(CPUArchState *env, int sig, target_siginfo_t *info);
 347 void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
 348 void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
 349 int target_to_host_signal(int sig);
 350 int host_to_target_signal(int sig);
 351 long do_sigreturn(CPUArchState *env);
 352 long do_rt_sigreturn(CPUArchState *env);
 353 abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
 354 int do_sigprocmask(int how, const sigset_t *set, sigset_t *oldset);
 355
 356 #ifdef TARGET_I386
 357 /* vm86.c */
 358 void save_v86_state(CPUX86State *env);
 359 void handle_vm86_trap(CPUX86State *env, int trapno);
 360 void handle_vm86_fault(CPUX86State *env);
 361 int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr);
 362 #elif defined(TARGET_SPARC64)
 363 void sparc64_set_context(CPUSPARCState *env);
 364 void sparc64_get_context(CPUSPARCState *env);
 365 #endif
 366
 367 /* mmap.c */
 368 int target_mprotect(abi_ulong start, abi_ulong len, int prot);
 369 abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
 370                      int flags, int fd, abi_ulong offset);
 371 int target_munmap(abi_ulong start, abi_ulong len);
 372 abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
 373                        abi_ulong new_size, unsigned long flags,
 374                        abi_ulong new_addr);
 375 int target_msync(abi_ulong start, abi_ulong len, int flags);
 376 extern unsigned long last_brk;
 377 extern abi_ulong mmap_next_start;
 378 abi_ulong mmap_find_vma(abi_ulong, abi_ulong);
 379 void cpu_list_lock(void);
 380 void cpu_list_unlock(void);
 381 void mmap_fork_start(void);
 382 void mmap_fork_end(int child);
 383
 384 /* main.c */
 385 extern unsigned long guest_stack_size;
 386
 387 /* user access */
 388
 389 #define VERIFY_READ 0
 390 #define VERIFY_WRITE 1 /* implies read access */
 391
 392 static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
 393 {
 394     return page_check_range((target_ulong)addr, size,
 395                             (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0;
 396 }
 397
 398 /* NOTE __get_user and __put_user use host pointers and don't check access.
 399    These are usually used to access struct data members once the struct has
 400    been locked - usually with lock_user_struct.  */
 401
 402 /* Tricky points:
 403    - Use __builtin_choose_expr to avoid type promotion from ?:,
 404    - Invalid sizes result in a compile time error stemming from
 405      the fact that abort has no parameters.
 406    - It's easier to use the endian-specific unaligned load/store
 407      functions than host-endian unaligned load/store plus tswapN.  */
 408
 409 #define __put_user_e(x, hptr, e)                                        \
 410   (__builtin_choose_expr(sizeof(*(hptr)) == 1, stb_p,                   \
 411    __builtin_choose_expr(sizeof(*(hptr)) == 2, stw_##e##_p,             \
 412    __builtin_choose_expr(sizeof(*(hptr)) == 4, stl_##e##_p,             \
 413    __builtin_choose_expr(sizeof(*(hptr)) == 8, stq_##e##_p, abort))))   \
 414      ((hptr), (x)), (void)0)
 415
 416 #define __get_user_e(x, hptr, e)                                        \
 417   ((x) = (typeof(*hptr))(                                               \
 418    __builtin_choose_expr(sizeof(*(hptr)) == 1, ldub_p,                  \
 419    __builtin_choose_expr(sizeof(*(hptr)) == 2, lduw_##e##_p,            \
 420    __builtin_choose_expr(sizeof(*(hptr)) == 4, ldl_##e##_p,             \
 421    __builtin_choose_expr(sizeof(*(hptr)) == 8, ldq_##e##_p, abort))))   \
 422      (hptr)), (void)0)
 423
 424 #ifdef TARGET_WORDS_BIGENDIAN
 425 # define __put_user(x, hptr)  __put_user_e(x, hptr, be)
 426 # define __get_user(x, hptr)  __get_user_e(x, hptr, be)
 427 #else
 428 # define __put_user(x, hptr)  __put_user_e(x, hptr, le)
 429 # define __get_user(x, hptr)  __get_user_e(x, hptr, le)
 430 #endif
 431
 432 /* put_user()/get_user() take a guest address and check access */
 433 /* These are usually used to access an atomic data type, such as an int,
 434  * that has been passed by address.  These internally perform locking
 435  * and unlocking on the data type.
 436  */
 437 #define put_user(x, gaddr, target_type)                                 \
 438 ({                                                                      \
 439     abi_ulong __gaddr = (gaddr);                                        \
 440     target_type *__hptr;                                                \
 441     abi_long __ret = 0;                                                 \
 442     if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
 443         __put_user((x), __hptr);                                \
 444         unlock_user(__hptr, __gaddr, sizeof(target_type));              \
 445     } else                                                              \
 446         __ret = -TARGET_EFAULT;                                         \
 447     __ret;                                                              \
 448 })
 449
 450 #define get_user(x, gaddr, target_type)                                 \
 451 ({                                                                      \
 452     abi_ulong __gaddr = (gaddr);                                        \
 453     target_type *__hptr;                                                \
 454     abi_long __ret = 0;                                                 \
 455     if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
 456         __get_user((x), __hptr);                                \
 457         unlock_user(__hptr, __gaddr, 0);                                \
 458     } else {                                                            \
 459         /* avoid warning */                                             \
 460         (x) = 0;                                                        \
 461         __ret = -TARGET_EFAULT;                                         \
 462     }                                                                   \
 463     __ret;                                                              \
 464 })
 465
 466 #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
 467 #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
 468 #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
 469 #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
 470 #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
 471 #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
 472 #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
 473 #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
 474 #define put_user_u8(x, gaddr)  put_user((x), (gaddr), uint8_t)
 475 #define put_user_s8(x, gaddr)  put_user((x), (gaddr), int8_t)
 476
 477 #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
 478 #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
 479 #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
 480 #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
 481 #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
 482 #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
 483 #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
 484 #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
 485 #define get_user_u8(x, gaddr)  get_user((x), (gaddr), uint8_t)
 486 #define get_user_s8(x, gaddr)  get_user((x), (gaddr), int8_t)
 487
 488 /* copy_from_user() and copy_to_user() are usually used to copy data
 489  * buffers between the target and host.  These internally perform
 490  * locking/unlocking of the memory.
 491  */
 492 abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
 493 abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
 494
 495 /* Functions for accessing guest memory.  The tget and tput functions
 496    read/write single values, byteswapping as necessary.  The lock_user function
 497    gets a pointer to a contiguous area of guest memory, but does not perform
 498    any byteswapping.  lock_user may return either a pointer to the guest
 499    memory, or a temporary buffer.  */
 500
 501 /* Lock an area of guest memory into the host.  If copy is true then the
 502    host area will have the same contents as the guest.  */
 503 static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy)
 504 {
 505     if (!access_ok(type, guest_addr, len))
 506         return NULL;
 507 #ifdef DEBUG_REMAP
 508     {
 509         void *addr;
 510         addr = malloc(len);
 511         if (copy)
 512             memcpy(addr, g2h(guest_addr), len);
 513         else
 514             memset(addr, 0, len);
 515         return addr;
 516     }
 517 #else
 518     return g2h(guest_addr);
 519 #endif
 520 }
 521
 522 /* Unlock an area of guest memory.  The first LEN bytes must be
 523    flushed back to guest memory. host_ptr = NULL is explicitly
 524    allowed and does nothing. */
 525 static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
 526                                long len)
 527 {
 528
 529 #ifdef DEBUG_REMAP
 530     if (!host_ptr)
 531         return;
 532     if (host_ptr == g2h(guest_addr))
 533         return;
 534     if (len > 0)
 535         memcpy(g2h(guest_addr), host_ptr, len);
 536     free(host_ptr);
 537 #endif
 538 }
 539
 540 /* Return the length of a string in target memory or -TARGET_EFAULT if
 541    access error. */
 542 abi_long target_strlen(abi_ulong gaddr);
 543
 544 /* Like lock_user but for null terminated strings.  */
 545 static inline void *lock_user_string(abi_ulong guest_addr)
 546 {
 547     abi_long len;
 548     len = target_strlen(guest_addr);
 549     if (len < 0)
 550         return NULL;
 551     return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
 552 }
 553
 554 /* Helper macros for locking/unlocking a target struct.  */
 555 #define lock_user_struct(type, host_ptr, guest_addr, copy)      \
 556     (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
 557 #define unlock_user_struct(host_ptr, guest_addr, copy)          \
 558     unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
 559
 560 #include <pthread.h>
 561
 562 /* Include target-specific struct and function definitions;
 563  * they may need access to the target-independent structures
 564  * above, so include them last.
 565  */
 566 #include "target_cpu.h"
 567 #include "target_signal.h"
 568 #include "target_structs.h"
 569
 570 #endif /* QEMU_H */