| 1 | /* |
| 2 | * qemu bsd user mode definition |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
| 16 | */ |
| 17 | #ifndef QEMU_H |
| 18 | #define QEMU_H |
| 19 | |
| 20 | #include <sys/param.h> |
| 21 | |
| 22 | #include "qemu/int128.h" |
| 23 | #include "cpu.h" |
| 24 | #include "qemu/units.h" |
| 25 | #include "accel/tcg/cpu-ldst.h" |
| 26 | |
| 27 | #include "user/abitypes.h" |
| 28 | #include "user/cpu_loop.h" |
| 29 | #include "user/page-protection.h" |
| 30 | #include "user/guest-host.h" |
| 31 | |
| 32 | extern char **environ; |
| 33 | |
| 34 | #include "user/thunk.h" |
| 35 | #include "user/mmap.h" |
| 36 | #include "target_arch.h" |
| 37 | #include "syscall_defs.h" |
| 38 | #include "target_syscall.h" |
| 39 | #include "target_os_vmparam.h" |
| 40 | #include "target_os_signal.h" |
| 41 | #include "target.h" |
| 42 | #include "exec/gdbstub.h" |
| 43 | #include "exec/page-protection.h" |
| 44 | #include "accel/tcg/vcpu-state.h" |
| 45 | |
| 46 | #include "qemu-os.h" |
| 47 | /* |
| 48 | * TODO: Remove these and rely only on qemu_real_host_page_size(). |
| 49 | */ |
| 50 | extern uintptr_t qemu_host_page_size; |
| 51 | extern intptr_t qemu_host_page_mask; |
| 52 | #define HOST_PAGE_ALIGN(addr) ROUND_UP((addr), qemu_host_page_size) |
| 53 | |
| 54 | /* |
| 55 | * This struct is used to hold certain information about the image. Basically, |
| 56 | * it replicates in user space what would be certain task_struct fields in the |
| 57 | * kernel |
| 58 | */ |
| 59 | struct image_info { |
| 60 | abi_ulong load_bias; |
| 61 | abi_ulong load_addr; |
| 62 | abi_ulong start_code; |
| 63 | abi_ulong end_code; |
| 64 | abi_ulong start_data; |
| 65 | abi_ulong end_data; |
| 66 | abi_ulong brk; |
| 67 | abi_ulong rss; |
| 68 | abi_ulong start_stack; |
| 69 | abi_ulong entry; |
| 70 | abi_ulong code_offset; |
| 71 | abi_ulong data_offset; |
| 72 | abi_ulong arg_start; |
| 73 | abi_ulong arg_end; |
| 74 | uint32_t elf_flags; |
| 75 | }; |
| 76 | |
| 77 | struct emulated_sigtable { |
| 78 | int pending; /* true if signal is pending */ |
| 79 | target_siginfo_t info; |
| 80 | }; |
| 81 | |
| 82 | /* |
| 83 | * NOTE: we force a big alignment so that the stack stored after is aligned too |
| 84 | */ |
| 85 | struct TaskState { |
| 86 | pid_t ts_tid; /* tid (or pid) of this task */ |
| 87 | |
| 88 | struct TaskState *next; |
| 89 | struct bsd_binprm *bprm; |
| 90 | struct image_info *info; |
| 91 | |
| 92 | struct emulated_sigtable sync_signal; |
| 93 | /* |
| 94 | * TODO: Since we block all signals while returning to the main CPU |
| 95 | * loop, this needn't be an array |
| 96 | */ |
| 97 | struct emulated_sigtable sigtab[TARGET_NSIG]; |
| 98 | /* |
| 99 | * Nonzero if process_pending_signals() needs to do something (either |
| 100 | * handle a pending signal or unblock signals). |
| 101 | * This flag is written from a signal handler so should be accessed via |
| 102 | * the qatomic_read() and qatomic_set() functions. (It is not accessed |
| 103 | * from multiple threads.) |
| 104 | */ |
| 105 | int signal_pending; |
| 106 | /* True if we're leaving a sigsuspend and sigsuspend_mask is valid. */ |
| 107 | bool in_sigsuspend; |
| 108 | /* |
| 109 | * This thread's signal mask, as requested by the guest program. |
| 110 | * The actual signal mask of this thread may differ: |
| 111 | * + we don't let SIGSEGV and SIGBUS be blocked while running guest code |
| 112 | * + sometimes we block all signals to avoid races |
| 113 | */ |
| 114 | sigset_t signal_mask; |
| 115 | /* |
| 116 | * The signal mask imposed by a guest sigsuspend syscall, if we are |
| 117 | * currently in the middle of such a syscall |
| 118 | */ |
| 119 | sigset_t sigsuspend_mask; |
| 120 | |
| 121 | /* This thread's sigaltstack, if it has one */ |
| 122 | struct target_sigaltstack sigaltstack_used; |
| 123 | } __attribute__((aligned(16))); |
| 124 | |
| 125 | void stop_all_tasks(void); |
| 126 | extern const char *interp_prefix; |
| 127 | extern const char *qemu_uname_release; |
| 128 | |
| 129 | /* |
| 130 | * TARGET_ARG_MAX defines the number of bytes allocated for arguments |
| 131 | * and envelope for the new program. 256k should suffice for a reasonable |
| 132 | * maximum env+arg in 32-bit environments, bump it up to 512k for !ILP32 |
| 133 | * platforms. |
| 134 | */ |
| 135 | #if TARGET_ABI_BITS > 32 |
| 136 | #define TARGET_ARG_MAX (512 * KiB) |
| 137 | #else |
| 138 | #define TARGET_ARG_MAX (256 * KiB) |
| 139 | #endif |
| 140 | #define MAX_ARG_PAGES (TARGET_ARG_MAX / TARGET_PAGE_SIZE) |
| 141 | |
| 142 | /* |
| 143 | * This structure is used to hold the arguments that are |
| 144 | * used when loading binaries. |
| 145 | */ |
| 146 | struct bsd_binprm { |
| 147 | char buf[128]; |
| 148 | void *page[MAX_ARG_PAGES]; |
| 149 | abi_ulong p; |
| 150 | abi_ulong stringp; |
| 151 | int fd; |
| 152 | int e_uid, e_gid; |
| 153 | int argc, envc; |
| 154 | char **argv; |
| 155 | char **envp; |
| 156 | char *filename; /* (Given) Name of binary */ |
| 157 | char *fullpath; /* Full path of binary */ |
| 158 | int (*core_dump)(int, CPUArchState *); |
| 159 | }; |
| 160 | |
| 161 | void do_init_thread(struct target_pt_regs *regs, struct image_info *infop); |
| 162 | abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp, |
| 163 | abi_ulong stringp); |
| 164 | int loader_exec(const char *filename, char **argv, char **envp, |
| 165 | struct target_pt_regs *regs, struct image_info *infop, |
| 166 | struct bsd_binprm *bprm); |
| 167 | |
| 168 | int load_elf_binary(struct bsd_binprm *bprm, struct target_pt_regs *regs, |
| 169 | struct image_info *info); |
| 170 | int load_flt_binary(struct bsd_binprm *bprm, struct target_pt_regs *regs, |
| 171 | struct image_info *info); |
| 172 | int is_target_elf_binary(int fd); |
| 173 | |
| 174 | abi_long memcpy_to_target(abi_ulong dest, const void *src, |
| 175 | unsigned long len); |
| 176 | void target_set_brk(abi_ulong new_brk); |
| 177 | abi_long do_brk(abi_ulong new_brk); |
| 178 | void syscall_init(void); |
| 179 | abi_long do_freebsd_syscall(void *cpu_env, int num, abi_long arg1, |
| 180 | abi_long arg2, abi_long arg3, abi_long arg4, |
| 181 | abi_long arg5, abi_long arg6, abi_long arg7, |
| 182 | abi_long arg8); |
| 183 | void gemu_log(const char *fmt, ...) G_GNUC_PRINTF(1, 2); |
| 184 | extern __thread CPUState *thread_cpu; |
| 185 | char *target_strerror(int err); |
| 186 | int get_osversion(void); |
| 187 | void fork_start(void); |
| 188 | void fork_end(pid_t pid); |
| 189 | |
| 190 | #include "qemu/log.h" |
| 191 | |
| 192 | /* strace.c */ |
| 193 | struct syscallname { |
| 194 | int nr; |
| 195 | const char *name; |
| 196 | const char *format; |
| 197 | void (*call)(const struct syscallname *, |
| 198 | abi_long, abi_long, abi_long, |
| 199 | abi_long, abi_long, abi_long); |
| 200 | void (*result)(const struct syscallname *, abi_long); |
| 201 | }; |
| 202 | |
| 203 | void |
| 204 | print_freebsd_syscall(int num, |
| 205 | abi_long arg1, abi_long arg2, abi_long arg3, |
| 206 | abi_long arg4, abi_long arg5, abi_long arg6); |
| 207 | void print_freebsd_syscall_ret(int num, abi_long ret); |
| 208 | /** |
| 209 | * print_taken_signal: |
| 210 | * @target_signum: target signal being taken |
| 211 | * @tinfo: target_siginfo_t which will be passed to the guest for the signal |
| 212 | * |
| 213 | * Print strace output indicating that this signal is being taken by the guest, |
| 214 | * in a format similar to: |
| 215 | * --- SIGSEGV {si_signo=SIGSEGV, si_code=SI_KERNEL, si_addr=0} --- |
| 216 | */ |
| 217 | void print_taken_signal(int target_signum, const target_siginfo_t *tinfo); |
| 218 | extern int do_strace; |
| 219 | |
| 220 | /* mmap.c */ |
| 221 | int target_msync(abi_ulong start, abi_ulong len, int flags); |
| 222 | void mmap_reserve(abi_ulong start, abi_ulong size); |
| 223 | |
| 224 | /* main.c */ |
| 225 | extern char qemu_proc_pathname[]; |
| 226 | extern unsigned long target_maxtsiz; |
| 227 | extern unsigned long target_dfldsiz; |
| 228 | extern unsigned long target_maxdsiz; |
| 229 | extern unsigned long target_dflssiz; |
| 230 | extern unsigned long target_maxssiz; |
| 231 | extern unsigned long target_sgrowsiz; |
| 232 | |
| 233 | /* os-syscall.c */ |
| 234 | abi_long get_errno(abi_long ret); |
| 235 | bool is_error(abi_long ret); |
| 236 | int host_to_target_errno(int err); |
| 237 | |
| 238 | /* os-proc.c */ |
| 239 | abi_long freebsd_exec_common(abi_ulong path_or_fd, abi_ulong guest_argp, |
| 240 | abi_ulong guest_envp, int do_fexec); |
| 241 | abi_long do_freebsd_procctl(void *cpu_env, int idtype, abi_ulong arg2, |
| 242 | abi_ulong arg3, abi_ulong arg4, abi_ulong arg5, abi_ulong arg6); |
| 243 | |
| 244 | /* os-sys.c */ |
| 245 | abi_long do_freebsd_sysctl(CPUArchState *env, abi_ulong namep, int32_t namelen, |
| 246 | abi_ulong oldp, abi_ulong oldlenp, abi_ulong newp, abi_ulong newlen); |
| 247 | abi_long do_freebsd_sysctlbyname(CPUArchState *env, abi_ulong namep, |
| 248 | int32_t namelen, abi_ulong oldp, abi_ulong oldlenp, abi_ulong newp, |
| 249 | abi_ulong newlen); |
| 250 | abi_long do_freebsd_sysarch(void *cpu_env, abi_long arg1, abi_long arg2); |
| 251 | |
| 252 | /* user access */ |
| 253 | |
| 254 | #define VERIFY_READ PAGE_READ |
| 255 | #define VERIFY_WRITE (PAGE_READ | PAGE_WRITE) |
| 256 | |
| 257 | static inline bool access_ok(int type, abi_ulong addr, abi_ulong size) |
| 258 | { |
| 259 | return page_check_range((target_ulong)addr, size, type); |
| 260 | } |
| 261 | |
| 262 | /* |
| 263 | * NOTE __get_user and __put_user use host pointers and don't check access. |
| 264 | * |
| 265 | * These are usually used to access struct data members once the struct has been |
| 266 | * locked - usually with lock_user_struct(). |
| 267 | */ |
| 268 | |
| 269 | /* |
| 270 | * Tricky points: |
| 271 | * - Use __builtin_choose_expr to avoid type promotion from ?:, |
| 272 | * - Invalid sizes result in a compile time error stemming from |
| 273 | * the fact that abort has no parameters. |
| 274 | * - It's easier to use the endian-specific unaligned load/store |
| 275 | * functions than host-endian unaligned load/store plus tswapN. |
| 276 | * - The pragmas are necessary only to silence a clang false-positive |
| 277 | * warning: see https://bugs.llvm.org/show_bug.cgi?id=39113 . |
| 278 | * - gcc has bugs in its _Pragma() support in some versions, eg |
| 279 | * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83256 -- so we only |
| 280 | * include the warning-suppression pragmas for clang |
| 281 | */ |
| 282 | #if defined(__clang__) && __has_warning("-Waddress-of-packed-member") |
| 283 | #define PRAGMA_DISABLE_PACKED_WARNING \ |
| 284 | _Pragma("GCC diagnostic push"); \ |
| 285 | _Pragma("GCC diagnostic ignored \"-Waddress-of-packed-member\"") |
| 286 | |
| 287 | #define PRAGMA_REENABLE_PACKED_WARNING \ |
| 288 | _Pragma("GCC diagnostic pop") |
| 289 | |
| 290 | #else |
| 291 | #define PRAGMA_DISABLE_PACKED_WARNING |
| 292 | #define PRAGMA_REENABLE_PACKED_WARNING |
| 293 | #endif |
| 294 | |
| 295 | #define __put_user_e(x, hptr, e) \ |
| 296 | do { \ |
| 297 | PRAGMA_DISABLE_PACKED_WARNING; \ |
| 298 | (__builtin_choose_expr(sizeof(*(hptr)) == 1, stb_p, \ |
| 299 | __builtin_choose_expr(sizeof(*(hptr)) == 2, stw_##e##_p, \ |
| 300 | __builtin_choose_expr(sizeof(*(hptr)) == 4, stl_##e##_p, \ |
| 301 | __builtin_choose_expr(sizeof(*(hptr)) == 8, stq_##e##_p, abort)))) \ |
| 302 | ((hptr), (x)), (void)0); \ |
| 303 | PRAGMA_REENABLE_PACKED_WARNING; \ |
| 304 | } while (0) |
| 305 | |
| 306 | #define __get_user_e(x, hptr, e) \ |
| 307 | do { \ |
| 308 | PRAGMA_DISABLE_PACKED_WARNING; \ |
| 309 | ((x) = (typeof(*hptr))( \ |
| 310 | __builtin_choose_expr(sizeof(*(hptr)) == 1, ldub_p, \ |
| 311 | __builtin_choose_expr(sizeof(*(hptr)) == 2, lduw_##e##_p, \ |
| 312 | __builtin_choose_expr(sizeof(*(hptr)) == 4, ldl_##e##_p, \ |
| 313 | __builtin_choose_expr(sizeof(*(hptr)) == 8, ldq_##e##_p, abort)))) \ |
| 314 | (hptr)), (void)0); \ |
| 315 | PRAGMA_REENABLE_PACKED_WARNING; \ |
| 316 | } while (0) |
| 317 | |
| 318 | |
| 319 | #if TARGET_BIG_ENDIAN |
| 320 | # define __put_user(x, hptr) __put_user_e(x, hptr, be) |
| 321 | # define __get_user(x, hptr) __get_user_e(x, hptr, be) |
| 322 | #else |
| 323 | # define __put_user(x, hptr) __put_user_e(x, hptr, le) |
| 324 | # define __get_user(x, hptr) __get_user_e(x, hptr, le) |
| 325 | #endif |
| 326 | |
| 327 | /* |
| 328 | * put_user()/get_user() take a guest address and check access |
| 329 | * |
| 330 | * These are usually used to access an atomic data type, such as an int, that |
| 331 | * has been passed by address. These internally perform locking and unlocking |
| 332 | * on the data type. |
| 333 | */ |
| 334 | #define put_user(x, gaddr, target_type) \ |
| 335 | ({ \ |
| 336 | abi_ulong __gaddr = (gaddr); \ |
| 337 | target_type *__hptr; \ |
| 338 | abi_long __ret = 0; \ |
| 339 | __hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0); \ |
| 340 | if (__hptr) { \ |
| 341 | __put_user((x), __hptr); \ |
| 342 | unlock_user(__hptr, __gaddr, sizeof(target_type)); \ |
| 343 | } else \ |
| 344 | __ret = -TARGET_EFAULT; \ |
| 345 | __ret; \ |
| 346 | }) |
| 347 | |
| 348 | #define get_user(x, gaddr, target_type) \ |
| 349 | ({ \ |
| 350 | abi_ulong __gaddr = (gaddr); \ |
| 351 | target_type *__hptr; \ |
| 352 | abi_long __ret = 0; \ |
| 353 | __hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1); \ |
| 354 | if (__hptr) { \ |
| 355 | __get_user((x), __hptr); \ |
| 356 | unlock_user(__hptr, __gaddr, 0); \ |
| 357 | } else { \ |
| 358 | (x) = 0; \ |
| 359 | __ret = -TARGET_EFAULT; \ |
| 360 | } \ |
| 361 | __ret; \ |
| 362 | }) |
| 363 | |
| 364 | #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong) |
| 365 | #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long) |
| 366 | #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t) |
| 367 | #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t) |
| 368 | #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t) |
| 369 | #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t) |
| 370 | #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t) |
| 371 | #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t) |
| 372 | #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t) |
| 373 | #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t) |
| 374 | |
| 375 | #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong) |
| 376 | #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long) |
| 377 | #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t) |
| 378 | #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t) |
| 379 | #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t) |
| 380 | #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t) |
| 381 | #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t) |
| 382 | #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t) |
| 383 | #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t) |
| 384 | #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t) |
| 385 | |
| 386 | /* |
| 387 | * copy_from_user() and copy_to_user() are usually used to copy data |
| 388 | * buffers between the target and host. These internally perform |
| 389 | * locking/unlocking of the memory. |
| 390 | */ |
| 391 | abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len); |
| 392 | abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len); |
| 393 | |
| 394 | /* |
| 395 | * Functions for accessing guest memory. The tget and tput functions |
| 396 | * read/write single values, byteswapping as necessary. The lock_user function |
| 397 | * gets a pointer to a contiguous area of guest memory, but does not perform |
| 398 | * any byteswapping. lock_user may return either a pointer to the guest |
| 399 | * memory, or a temporary buffer. |
| 400 | */ |
| 401 | |
| 402 | /* |
| 403 | * Lock an area of guest memory into the host. If copy is true then the |
| 404 | * host area will have the same contents as the guest. |
| 405 | */ |
| 406 | static inline void *lock_user(int type, abi_ulong guest_addr, long len, |
| 407 | int copy) |
| 408 | { |
| 409 | if (!access_ok(type, guest_addr, len)) { |
| 410 | return NULL; |
| 411 | } |
| 412 | #ifdef CONFIG_DEBUG_REMAP |
| 413 | { |
| 414 | void *addr; |
| 415 | addr = g_malloc(len); |
| 416 | if (copy) { |
| 417 | memcpy(addr, g2h_untagged(guest_addr), len); |
| 418 | } else { |
| 419 | memset(addr, 0, len); |
| 420 | } |
| 421 | return addr; |
| 422 | } |
| 423 | #else |
| 424 | return g2h_untagged(guest_addr); |
| 425 | #endif |
| 426 | } |
| 427 | |
| 428 | /* |
| 429 | * Unlock an area of guest memory. The first LEN bytes must be flushed back to |
| 430 | * guest memory. host_ptr = NULL is explicitly allowed and does nothing. |
| 431 | */ |
| 432 | static inline void unlock_user(void *host_ptr, abi_ulong guest_addr, |
| 433 | long len) |
| 434 | { |
| 435 | |
| 436 | #ifdef CONFIG_DEBUG_REMAP |
| 437 | if (!host_ptr) { |
| 438 | return; |
| 439 | } |
| 440 | if (host_ptr == g2h_untagged(guest_addr)) { |
| 441 | return; |
| 442 | } |
| 443 | if (len > 0) { |
| 444 | memcpy(g2h_untagged(guest_addr), host_ptr, len); |
| 445 | } |
| 446 | g_free(host_ptr); |
| 447 | #endif |
| 448 | } |
| 449 | |
| 450 | /* |
| 451 | * Return the length of a string in target memory or -TARGET_EFAULT if access |
| 452 | * error. |
| 453 | */ |
| 454 | abi_long target_strlen(abi_ulong gaddr); |
| 455 | |
| 456 | /* Like lock_user but for null terminated strings. */ |
| 457 | static inline void *lock_user_string(abi_ulong guest_addr) |
| 458 | { |
| 459 | abi_long len; |
| 460 | len = target_strlen(guest_addr); |
| 461 | if (len < 0) { |
| 462 | return NULL; |
| 463 | } |
| 464 | return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1); |
| 465 | } |
| 466 | |
| 467 | /* Helper macros for locking/unlocking a target struct. */ |
| 468 | #define lock_user_struct(type, host_ptr, guest_addr, copy) \ |
| 469 | (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy)) |
| 470 | #define unlock_user_struct(host_ptr, guest_addr, copy) \ |
| 471 | unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0) |
| 472 | |
| 473 | static inline uint64_t target_arg64(uint32_t word0, uint32_t word1) |
| 474 | { |
| 475 | #if TARGET_ABI_BITS == 32 |
| 476 | #if TARGET_BIG_ENDIAN |
| 477 | return ((uint64_t)word0 << 32) | word1; |
| 478 | #else |
| 479 | return ((uint64_t)word1 << 32) | word0; |
| 480 | #endif |
| 481 | #else /* TARGET_ABI_BITS != 32 */ |
| 482 | return word0; |
| 483 | #endif /* TARGET_ABI_BITS != 32 */ |
| 484 | } |
| 485 | |
| 486 | #include <pthread.h> |
| 487 | |
| 488 | #include "user/safe-syscall.h" |
| 489 | |
| 490 | #endif /* QEMU_H */ |