osfmk/kern/debug.h

   1 /*
   2  * Copyright (c) 2000-2016 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28
  29 #ifndef _KERN_DEBUG_H_
  30 #define _KERN_DEBUG_H_
  31
  32 #include <kern/kcdata.h>
  33
  34 #include <sys/cdefs.h>
  35 #include <stdint.h>
  36 #include <uuid/uuid.h>
  37 #include <mach/boolean.h>
  38 #include <mach/kern_return.h>
  39
  40 #ifndef XNU_KERNEL_PRIVATE
  41 #include <TargetConditionals.h>
  42 #endif
  43
  44 #ifdef __APPLE_API_PRIVATE
  45 #ifdef __APPLE_API_UNSTABLE
  46
  47 struct thread_snapshot {
  48         uint32_t                snapshot_magic;
  49         uint32_t                nkern_frames;
  50         uint32_t                nuser_frames;
  51         uint64_t                wait_event;
  52         uint64_t                continuation;
  53         uint64_t                thread_id;
  54         uint64_t                user_time;
  55         uint64_t                system_time;
  56         int32_t                 state;
  57         int32_t                 priority;    /* static priority */
  58         int32_t                 sched_pri;   /* scheduled (current) priority */
  59         int32_t                 sched_flags; /* scheduler flags */
  60         char                    ss_flags;
  61         char                    ts_qos;      /* effective qos */
  62         char                    ts_rqos;     /* requested qos */
  63         char                    ts_rqos_override; /* requested qos override */
  64         char                    io_tier;
  65         char                    _reserved[3]; /* pad for 4 byte alignement packing */
  66
  67         /*
  68          * I/O Statistics
  69          * XXX: These fields must be together
  70          */
  71         uint64_t                disk_reads_count;
  72         uint64_t                disk_reads_size;
  73         uint64_t                disk_writes_count;
  74         uint64_t                disk_writes_size;
  75         uint64_t                io_priority_count[STACKSHOT_IO_NUM_PRIORITIES];
  76         uint64_t                io_priority_size[STACKSHOT_IO_NUM_PRIORITIES];
  77         uint64_t                paging_count;
  78         uint64_t                paging_size;
  79         uint64_t                non_paging_count;
  80         uint64_t                non_paging_size;
  81         uint64_t                data_count;
  82         uint64_t                data_size;
  83         uint64_t                metadata_count;
  84         uint64_t                metadata_size;
  85         /* XXX: I/O Statistics end */
  86
  87         uint64_t                voucher_identifier; /* obfuscated voucher identifier */
  88         uint64_t                total_syscalls;
  89         char                    pth_name[STACKSHOT_MAX_THREAD_NAME_SIZE];
  90
  91 } __attribute__((packed));
  92
  93 /* old, non kcdata format */
  94 struct task_snapshot {
  95         uint32_t snapshot_magic;
  96         int32_t pid;
  97         uint64_t                uniqueid;
  98         uint64_t                user_time_in_terminated_threads;
  99         uint64_t                system_time_in_terminated_threads;
 100         uint8_t                 shared_cache_identifier[16];
 101         uint64_t                shared_cache_slide;
 102         uint32_t                nloadinfos;
 103         int                     suspend_count;
 104         int                     task_size;      /* pages */
 105         int                     faults;         /* number of page faults */
 106         int                     pageins;        /* number of actual pageins */
 107         int                     cow_faults;     /* number of copy-on-write faults */
 108         uint32_t                ss_flags;
 109         uint64_t                p_start_sec;    /* from the bsd proc struct */
 110         uint64_t                p_start_usec;   /* from the bsd proc struct */
 111
 112         /*
 113          * We restrict ourselves to a statically defined
 114          * (current as of 2009) length for the
 115          * p_comm string, due to scoping issues (osfmk/bsd and user/kernel
 116          * binary compatibility).
 117          */
 118         char                    p_comm[17];
 119         uint32_t                was_throttled;
 120         uint32_t                did_throttle;
 121         uint32_t                latency_qos;
 122         /*
 123          * I/O Statistics
 124          * XXX: These fields must be together.
 125          */
 126         uint64_t                disk_reads_count;
 127         uint64_t                disk_reads_size;
 128         uint64_t                disk_writes_count;
 129         uint64_t                disk_writes_size;
 130         uint64_t                io_priority_count[STACKSHOT_IO_NUM_PRIORITIES];
 131         uint64_t                io_priority_size[STACKSHOT_IO_NUM_PRIORITIES];
 132         uint64_t                paging_count;
 133         uint64_t                paging_size;
 134         uint64_t                non_paging_count;
 135         uint64_t                non_paging_size;
 136         uint64_t                data_count;
 137         uint64_t                data_size;
 138         uint64_t                metadata_count;
 139         uint64_t                metadata_size;
 140         /* XXX: I/O Statistics end */
 141
 142         uint32_t                donating_pid_count;
 143
 144 } __attribute__ ((packed));
 145
 146
 147
 148 struct micro_snapshot {
 149         uint32_t                snapshot_magic;
 150         uint32_t                ms_cpu;  /* cpu number this snapshot was recorded on */
 151         uint64_t                ms_time; /* time at sample (seconds) */
 152         uint64_t                ms_time_microsecs;
 153         uint8_t                 ms_flags;
 154         uint16_t                ms_opaque_flags;        /* managed by external entity, e.g. fdrmicrod */
 155 } __attribute__ ((packed));
 156
 157
 158
 159 struct _dyld_cache_header
 160 {
 161     char        magic[16];                              // e.g. "dyld_v0    i386"
 162     uint32_t    mappingOffset;          // file offset to first dyld_cache_mapping_info
 163     uint32_t    mappingCount;           // number of dyld_cache_mapping_info entries
 164     uint32_t    imagesOffset;           // file offset to first dyld_cache_image_info
 165     uint32_t    imagesCount;            // number of dyld_cache_image_info entries
 166     uint64_t    dyldBaseAddress;        // base address of dyld when cache was built
 167     uint64_t    codeSignatureOffset;    // file offset of code signature blob
 168     uint64_t    codeSignatureSize;      // size of code signature blob (zero means to end of file)
 169     uint64_t    slideInfoOffset;        // file offset of kernel slid info
 170     uint64_t    slideInfoSize;          // size of kernel slid info
 171     uint64_t    localSymbolsOffset;     // file offset of where local symbols are stored
 172     uint64_t    localSymbolsSize;       // size of local symbols information
 173     uint8_t     uuid[16];               // unique value for each shared cache file
 174 };
 175
 176
 177 enum micro_snapshot_flags {
 178         kInterruptRecord        = 0x1,
 179         kTimerArmingRecord      = 0x2,
 180         kUserMode               = 0x4, /* interrupted usermode, or armed by usermode */
 181         kIORecord               = 0x8,
 182 };
 183
 184 /*
 185  * Flags used in the following assortment of snapshots.
 186  */
 187 enum generic_snapshot_flags {
 188         kUser64_p                       = 0x1,
 189         kKernel64_p             = 0x2
 190 };
 191
 192
 193 #define VM_PRESSURE_TIME_WINDOW 5 /* seconds */
 194
 195 enum {
 196         STACKSHOT_GET_DQ                           = 0x01,
 197         STACKSHOT_SAVE_LOADINFO                    = 0x02,
 198         STACKSHOT_GET_GLOBAL_MEM_STATS             = 0x04,
 199         STACKSHOT_SAVE_KEXT_LOADINFO               = 0x08,
 200         STACKSHOT_GET_MICROSTACKSHOT               = 0x10,
 201         STACKSHOT_GLOBAL_MICROSTACKSHOT_ENABLE     = 0x20,
 202         STACKSHOT_GLOBAL_MICROSTACKSHOT_DISABLE    = 0x40,
 203         STACKSHOT_SET_MICROSTACKSHOT_MARK          = 0x80,
 204         STACKSHOT_ACTIVE_KERNEL_THREADS_ONLY       = 0x100,
 205         STACKSHOT_GET_BOOT_PROFILE                 = 0x200,
 206         STACKSHOT_SAVE_IMP_DONATION_PIDS           = 0x2000,
 207         STACKSHOT_SAVE_IN_KERNEL_BUFFER            = 0x4000,
 208         STACKSHOT_RETRIEVE_EXISTING_BUFFER         = 0x8000,
 209         STACKSHOT_KCDATA_FORMAT                    = 0x10000,
 210         STACKSHOT_ENABLE_BT_FAULTING               = 0x20000,
 211         STACKSHOT_COLLECT_DELTA_SNAPSHOT           = 0x40000,
 212         /*
 213          * STACKSHOT_TAILSPIN flips on several features aimed at minimizing the size
 214          * of stackshots.  It is meant to be used only by the tailspin daemon.  Its
 215          * behavior may be changed at any time to suit the needs of the tailspin
 216          * daemon.  Seriously, if you are not the tailspin daemon, don't use this
 217          * flag.  If you need these features, ask us to add a stable SPI for what
 218          * you need.   That being said, the features it turns on are:
 219          *
 220          * minimize_uuids: If the set of loaded dylibs or kexts has not changed in
 221          * the delta period, do then not report them.
 222          *
 223          * iostats: do not include io statistics.
 224          *
 225          * trace_fp: do not include the frame pointers in stack traces.
 226          *
 227          * minimize_nonrunnables: Do not report detailed information about threads
 228          * which were not runnable in the delta period.
 229          */
 230         STACKSHOT_TAILSPIN                         = 0x80000,
 231         /*
 232          * Kernel consumers of stackshot (via stack_snapshot_from_kernel) can ask
 233          * that we try to take the stackshot lock, and fail if we don't get it.
 234          */
 235         STACKSHOT_TRYLOCK                          = 0x100000,
 236         STACKSHOT_ENABLE_UUID_FAULTING             = 0x200000,
 237         STACKSHOT_FROM_PANIC                       = 0x400000,
 238         STACKSHOT_NO_IO_STATS                      = 0x800000,
 239 };
 240
 241 #define STACKSHOT_THREAD_SNAPSHOT_MAGIC         0xfeedface
 242 #define STACKSHOT_TASK_SNAPSHOT_MAGIC           0xdecafbad
 243 #define STACKSHOT_MEM_AND_IO_SNAPSHOT_MAGIC     0xbfcabcde
 244 #define STACKSHOT_MICRO_SNAPSHOT_MAGIC          0x31c54011
 245
 246 #endif /* __APPLE_API_UNSTABLE */
 247 #endif /* __APPLE_API_PRIVATE */
 248
 249 #ifdef  KERNEL_PRIVATE
 250
 251 extern unsigned int     systemLogDiags;
 252 #if (!defined(__arm64__) && !defined(NAND_PANIC_DEVICE)) || defined(LEGACY_PANIC_LOGS)
 253 extern char debug_buf[];
 254 #endif
 255 extern char *debug_buf_addr;
 256 extern char *debug_buf_stackshot_start;
 257 extern char *debug_buf_stackshot_end;
 258
 259 extern unsigned int     debug_boot_arg;
 260 extern unsigned char *kernel_uuid;
 261 extern char kernel_uuid_string[];
 262
 263 #ifdef MACH_KERNEL_PRIVATE
 264
 265 extern boolean_t        doprnt_hide_pointers;
 266
 267 extern unsigned int     halt_in_debugger;
 268
 269 extern unsigned int     switch_debugger;
 270
 271 extern unsigned int     current_debugger;
 272 #define NO_CUR_DB       0x0
 273 #define KDP_CUR_DB      0x1
 274 //#define KDB_CUR_DB      0x2
 275 #define HW_SHM_CUR_DB   0x3
 276
 277 extern unsigned int     active_debugger;
 278 extern unsigned int     debug_mode;
 279 extern unsigned int     disable_debug_output;
 280
 281 extern unsigned int     panicDebugging;
 282 extern unsigned int     logPanicDataToScreen;
 283 extern unsigned int     kdebug_serial;
 284
 285 extern int db_run_mode;
 286
 287 /* modes the system may be running in */
 288
 289 #define STEP_NONE       0
 290 #define STEP_ONCE       1
 291 #define STEP_RETURN     2
 292 #define STEP_CALLT      3
 293 #define STEP_CONTINUE   4
 294 #define STEP_INVISIBLE  5
 295 #define STEP_COUNT      6
 296 #define STEP_TRACE      7       /* Show all calls to functions and returns */
 297
 298 extern const char               *panicstr;
 299 extern volatile unsigned int    nestedpanic;
 300 extern int unsigned long panic_caller;
 301
 302 extern char *debug_buf_ptr;
 303 extern unsigned int debug_buf_size;
 304
 305 extern void     debug_log_init(void);
 306 extern void     debug_putc(char);
 307
 308 extern void     panic_init(void);
 309
 310 int     packA(char *inbuf, uint32_t length, uint32_t buflen);
 311 void    unpackA(char *inbuf, uint32_t length);
 312
 313 void    panic_display_system_configuration(void);
 314 void    panic_display_zprint(void);
 315 void    panic_display_kernel_aslr(void);
 316 void    panic_display_hibb(void);
 317 void    panic_display_model_name(void);
 318 void    panic_display_kernel_uuid(void);
 319 #if CONFIG_ZLEAKS
 320 void    panic_display_ztrace(void);
 321 #endif /* CONFIG_ZLEAKS */
 322 #if CONFIG_ECC_LOGGING
 323 void    panic_display_ecc_errors(void);
 324 #endif /* CONFIG_ECC_LOGGING */
 325 #endif /* MACH_KERNEL_PRIVATE */
 326
 327 #define DB_HALT         0x1
 328 #define DB_PRT          0x2
 329 #define DB_NMI          0x4
 330 #define DB_KPRT         0x8
 331 #define DB_KDB          0x10
 332 #define DB_SLOG         0x20
 333 #define DB_ARP          0x40
 334 #define DB_KDP_BP_DIS   0x80
 335 #define DB_LOG_PI_SCRN  0x100
 336 #define DB_KDP_GETC_ENA 0x200
 337
 338 #define DB_KERN_DUMP_ON_PANIC           0x400 /* Trigger core dump on panic*/
 339 #define DB_KERN_DUMP_ON_NMI             0x800 /* Trigger core dump on NMI */
 340 #define DB_DBG_POST_CORE                0x1000 /*Wait in debugger after NMI core */
 341 #define DB_PANICLOG_DUMP                0x2000 /* Send paniclog on panic,not core*/
 342 #define DB_REBOOT_POST_CORE             0x4000 /* Attempt to reboot after
 343                                                 * post-panic crashdump/paniclog
 344                                                 * dump.
 345                                                 */
 346 #define DB_NMI_BTN_ENA          0x8000  /* Enable button to directly trigger NMI */
 347 #define DB_PRT_KDEBUG           0x10000 /* kprintf KDEBUG traces */
 348 #define DB_DISABLE_LOCAL_CORE   0x20000 /* ignore local kernel core dump support */
 349 #define DB_DISABLE_GZIP_CORE    0x40000 /* don't gzip kernel core dumps */
 350
 351 #if DEBUG
 352 /*
 353  * For the DEBUG kernel, support the following:
 354  *      sysctl -w debug.kprint_syscall=<syscall_mask>
 355  *      sysctl -w debug.kprint_syscall_process=<p_comm>
 356  * <syscall_mask> should be an OR of the masks below
 357  * for UNIX, MACH, MDEP, or IPC. This debugging aid
 358  * assumes the task/process is locked/wired and will
 359  * not go away during evaluation. If no process is
 360  * specified, all processes will be traced
 361  */
 362 extern int debug_kprint_syscall;
 363 extern int debug_kprint_current_process(const char **namep);
 364 #define DEBUG_KPRINT_SYSCALL_PREDICATE_INTERNAL(mask, namep)                    \
 365         ( (debug_kprint_syscall & (mask)) && debug_kprint_current_process(namep) )
 366 #define DEBUG_KPRINT_SYSCALL_MASK(mask, fmt, args...)   do {                    \
 367                 const char *dks_name = NULL;                                                                    \
 368                 if (DEBUG_KPRINT_SYSCALL_PREDICATE_INTERNAL(mask, &dks_name)) { \
 369                         kprintf("[%s%s%p]" fmt, dks_name ? dks_name : "",                       \
 370                                         dks_name ? "@" : "", current_thread(), args);                   \
 371                 }                                                                                                                               \
 372         } while (0)
 373 #else /* !DEBUG */
 374 #define DEBUG_KPRINT_SYSCALL_PREDICATE_INTERNAL(mask, namep) (0)
 375 #define DEBUG_KPRINT_SYSCALL_MASK(mask, fmt, args...) do { } while (0) /* kprintf(fmt, args) */
 376 #endif /* !DEBUG */
 377
 378 enum {
 379         DEBUG_KPRINT_SYSCALL_UNIX_MASK = 1 << 0,
 380         DEBUG_KPRINT_SYSCALL_MACH_MASK = 1 << 1,
 381         DEBUG_KPRINT_SYSCALL_MDEP_MASK = 1 << 2,
 382         DEBUG_KPRINT_SYSCALL_IPC_MASK  = 1 << 3
 383 };
 384
 385 #define DEBUG_KPRINT_SYSCALL_PREDICATE(mask)                            \
 386         DEBUG_KPRINT_SYSCALL_PREDICATE_INTERNAL(mask, NULL)
 387 #define DEBUG_KPRINT_SYSCALL_UNIX(fmt, args...)                         \
 388         DEBUG_KPRINT_SYSCALL_MASK(DEBUG_KPRINT_SYSCALL_UNIX_MASK,fmt,args)
 389 #define DEBUG_KPRINT_SYSCALL_MACH(fmt, args...)                         \
 390         DEBUG_KPRINT_SYSCALL_MASK(DEBUG_KPRINT_SYSCALL_MACH_MASK,fmt,args)
 391 #define DEBUG_KPRINT_SYSCALL_MDEP(fmt, args...)                         \
 392         DEBUG_KPRINT_SYSCALL_MASK(DEBUG_KPRINT_SYSCALL_MDEP_MASK,fmt,args)
 393 #define DEBUG_KPRINT_SYSCALL_IPC(fmt, args...)                          \
 394         DEBUG_KPRINT_SYSCALL_MASK(DEBUG_KPRINT_SYSCALL_IPC_MASK,fmt,args)
 395
 396 #endif  /* KERNEL_PRIVATE */
 397
 398
 399 #ifdef XNU_KERNEL_PRIVATE
 400
 401 /*
 402  * @var not_in_kdp
 403  *
 404  * @abstract True if we're in normal kernel operation, False if we're in a
 405  * single-core debugger context.
 406  */
 407 extern unsigned int not_in_kdp;
 408
 409 /*
 410  * @function DebuggerWithCallback
 411  *
 412  * @abstract Enter single-core debugger context and call a callback function.
 413  *
 414  * @param proceed_on_sync_failure If true, then go ahead and try to debug even
 415  * if we can't synch with the other cores.  This is inherently unsafe and should
 416  * only be used if the kernel is going down in flames anyway.
 417  *
 418  * @result returns KERN_OPERATION_TIMED_OUT if synchronization times out and
 419  * proceed_on_sync_failure is false.  Otherwise return the return value of the
 420  * callback.
 421  */
 422 kern_return_t
 423 DebuggerWithCallback(kern_return_t (*callback) (void*),
 424                                          void *callback_context,
 425                                          boolean_t proceed_on_sync_failure);
 426
 427 boolean_t oslog_is_safe(void);
 428
 429 /*
 430  * @function stack_snapshot_from_kernel
 431  *
 432  * @abstract Stackshot function for kernel consumers who have their own buffer.
 433  *
 434  * @param pid     the PID to be traced or -1 for the whole system
 435  * @param buf     a pointer to the buffer where the stackshot should be written
 436  * @param size    the size of the buffer
 437  * @param flags   flags to be passed to the stackshot
 438  * @param delta_since_timestamp start time for delta period
 439  * @bytes_traced  a pointer to be filled with the length of the stackshot
 440  *
 441  */
 442 #ifdef __cplusplus
 443 extern "C" {
 444 #endif
 445 kern_return_t
 446 stack_snapshot_from_kernel(int pid, void *buf, uint32_t size, uint32_t flags,
 447                                                    uint64_t delta_since_timestamp, unsigned *bytes_traced);
 448 #ifdef __cplusplus
 449 }
 450 #endif
 451
 452
 453 #endif /* XNU_KERNEL_PRIVATE */
 454
 455 #ifdef KERNEL
 456
 457 __BEGIN_DECLS
 458
 459 extern void panic(const char *string, ...) __printflike(1,2);
 460
 461 #if KERNEL_PRIVATE
 462 void _consume_panic_args(int, ...);
 463 void panic_context(unsigned int reason, void *ctx, const char *string, ...);
 464 void panic_with_options(unsigned int reason, void *ctx, uint64_t debugger_options_mask, const char *str, ...);
 465
 466 /* launchd crashed prefix in message to signal special panic handling */
 467 #define LAUNCHD_CRASHED_PREFIX                  "initproc exited"
 468
 469 /*
 470  * Values for a 64-bit mask that's passed to the debugger.
 471  */
 472 #define DEBUGGER_OPTION_NONE                    0x0ULL
 473 #define DEBUGGER_OPTION_PANICLOGANDREBOOT       0x1ULL /* capture a panic log and then reboot immediately */
 474 #endif
 475
 476 #ifdef CONFIG_NO_PANIC_STRINGS
 477 #if KERNEL_PRIVATE
 478 #define panic_plain(x, ...) _consume_panic_args( 0, ## __VA_ARGS__ )
 479 #define panic(x, ...) _consume_panic_args( 0, ## __VA_ARGS__ )
 480 #else
 481 #define panic_plain(...) (panic)((char *)0)
 482 #define panic(...)  (panic)((char *)0)
 483 #endif
 484 #else /* CONFIGS_NO_PANIC_STRINGS */
 485 #define panic_plain(ex, ...) \
 486         (panic)(ex, ## __VA_ARGS__)
 487 #define __STRINGIFY(x) #x
 488 #define LINE_NUMBER(x) __STRINGIFY(x)
 489 #define PANIC_LOCATION __FILE__ ":" LINE_NUMBER(__LINE__)
 490 #define panic(ex, ...) \
 491         (panic)(# ex "@" PANIC_LOCATION, ## __VA_ARGS__)
 492 #endif /* CONFIGS_NO_PANIC_STRINGS */
 493
 494 #ifdef KERNEL_PRIVATE
 495 void            populate_model_name(char *);
 496 unsigned        panic_active(void);
 497 #endif
 498
 499
 500 #if XNU_KERNEL_PRIVATE
 501 #if DEBUG || DEVELOPMENT
 502 /* leak pointer scan definitions */
 503
 504 enum
 505 {
 506     kInstanceFlagAddress    = 0x01UL,
 507     kInstanceFlagReferenced = 0x02UL,
 508     kInstanceFlags          = 0x03UL
 509 };
 510
 511 #define INSTANCE_GET(x) ((x) & ~kInstanceFlags)
 512 #define INSTANCE_PUT(x) ((x) ^ ~kInstanceFlags)
 513
 514 typedef void (*leak_site_proc)(void * refCon, uint32_t siteCount, uint32_t zoneSize,
 515                                uintptr_t * backtrace, uint32_t btCount);
 516
 517 extern kern_return_t
 518 zone_leaks(const char * zoneName, uint32_t nameLen, leak_site_proc proc, void * refCon);
 519
 520 extern void
 521 zone_leaks_scan(uintptr_t * instances, uint32_t count, uint32_t zoneSize, uint32_t * found);
 522
 523 #endif  /* DEBUG || DEVELOPMENT */
 524 #endif  /* XNU_KERNEL_PRIVATE */
 525
 526 __END_DECLS
 527
 528 #endif /* KERNEL */
 529
 530 #endif  /* _KERN_DEBUG_H_ */