xnu-3789.41.3.tar.gz

[apple/xnu.git] / bsd / sys / kdebug.h

/*
 * Copyright (c) 2000-2016 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 *
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */

/*
 * kdebug.h - kernel_debug definitions
 */

#ifndef BSD_SYS_KDEBUG_H
#define BSD_SYS_KDEBUG_H

#include <sys/appleapiopts.h>
#include <sys/cdefs.h>
__BEGIN_DECLS

#ifdef __APPLE_API_UNSTABLE

#include <mach/clock_types.h>
#include <stdint.h>

#ifndef KERNEL
#include <Availability.h>
#endif

#ifdef XNU_KERNEL_PRIVATE
#include <mach/branch_predicates.h> /* __improbable */
#endif

/*
 * Kdebug is a facility for tracing events occurring on a system.
 *
 * All events are tagged with a 32-bit debugid:
 *
 * +----------------+----------------+----------------------------+----+
 * |   Class (8)    |  Subclass (8)  |          Code (14)         |Func|
 * |                |                |                            |(2) |
 * +----------------+----------------+----------------------------+----+
 * \_________________________________/
 *         ClassSubclass (CSC)
 * \________________________________________________________________00_/
 *                                 Eventid
 * \___________________________________________________________________/
 *                                 Debugid
 *
 * The eventid is a hierarchical ID, indicating which components an event is
 * referring to.  The debugid includes an eventid and two function qualifier
 * bits, to determine the structural significance of an event (whether it
 * starts or ends an interval).
 */

#define KDBG_CLASS_MASK   (0xff000000)
#define KDBG_CLASS_OFFSET (24)
#define KDBG_CLASS_MAX    (0xff)

#define KDBG_SUBCLASS_MASK   (0x00ff0000)
#define KDBG_SUBCLASS_OFFSET (16)
#define KDBG_SUBCLASS_MAX    (0xff)

/* class and subclass mask */
#define KDBG_CSC_MASK   (0xffff0000)
#define KDBG_CSC_OFFSET (KDBG_SUBCLASS_OFFSET)
#define KDBG_CSC_MAX    (0xffff)

#define KDBG_CODE_MASK   (0x0000fffc)
#define KDBG_CODE_OFFSET (2)
#define KDBG_CODE_MAX    (0x3fff)

#define KDBG_EVENTID_MASK (0xfffffffc)
#define KDBG_FUNC_MASK    (0x00000003)

/* Generate an eventid corresponding to Class, SubClass, and Code. */
#define KDBG_EVENTID(Class, SubClass, Code)                \
        ((((Class)    &   0xff) << KDBG_CLASS_OFFSET)    | \
         (((SubClass) &   0xff) << KDBG_SUBCLASS_OFFSET) | \
         (((Code)     & 0x3fff) << KDBG_CODE_OFFSET))
/* Deprecated macro using old naming convention. */
#define KDBG_CODE(Class, SubClass, Code) \
        KDBG_EVENTID(Class, SubClass, Code)

/* Extract pieces of the debug code. */
#define KDBG_EXTRACT_CLASS(Debugid) \
        ((uint8_t)(((Debugid) & KDBG_CLASS_MASK) >> KDBG_CLASS_OFFSET))
#define KDBG_EXTRACT_SUBCLASS(Debugid) \
        ((uint8_t)(((Debugid) & KDBG_SUBCLASS_MASK) >> KDBG_SUBCLASS_OFFSET))
#define KDBG_EXTRACT_CSC(Debugid) \
        ((uint16_t)(((Debugid) & KDBG_CSC_MASK) >> KDBG_CSC_OFFSET))
#define KDBG_EXTRACT_CODE(Debugid) \
        ((uint16_t)(((Debugid) & KDBG_CODE_MASK) >> KDBG_CODE_OFFSET))

/* function qualifiers  */
#define DBG_FUNC_START 1
#define DBG_FUNC_END   2
#define DBG_FUNC_NONE  0

/*
 * Definitions to support IOP tracing.
 */

#ifdef KERNEL_PRIVATE

typedef enum {
	/* Trace is now enabled; no arguments.  */
	KD_CALLBACK_KDEBUG_ENABLED,
	/* Trace is now disabled; no arguments.  */
	KD_CALLBACK_KDEBUG_DISABLED,
	/*
	 * Request the latest entries from the IOP and block until complete; no
	 * arguments.
	 */
	KD_CALLBACK_SYNC_FLUSH,
	/*
	 * The typefilter is enabled; a read-only pointer to the typefilter is
	 * provided, valid only while in the callback.
	 */
	KD_CALLBACK_TYPEFILTER_CHANGED,
} kd_callback_type;
typedef void (*kd_callback_fn) (void* context, kd_callback_type reason, void* arg);

struct kd_callback {
	kd_callback_fn func;
	void *context;
	/* name of IOP, NUL-terminated */
	char iop_name[8];
};

typedef struct kd_callback kd_callback_t;

/*
 * Registers an IOP for participation in tracing.
 *
 * The registered callback function will be called with the
 * supplied context as the first argument, followed by a
 * kd_callback_type and an associated void* argument.
 *
 * The return value is a nonzero coreid that shall be used in
 * kernel_debug_enter() to refer to your IOP. If the allocation
 * failed, then 0 will be returned.
 *
 * Caveats:
 * Note that not all callback calls will indicate a change in
 * state (e.g. disabling trace twice would send two disable
 * notifications).
 */
extern int kernel_debug_register_callback(kd_callback_t callback);

extern void kernel_debug_enter(
	uint32_t coreid,
	uint32_t debugid,
	uint64_t timestamp,
	uintptr_t arg1,
	uintptr_t arg2,
	uintptr_t arg3,
	uintptr_t arg4,
	uintptr_t threadid
	);

#endif /* KERNEL_PRIVATE */

/* The Kernel Debug Classes  */
#define DBG_MACH        1
#define DBG_NETWORK     2
#define DBG_FSYSTEM     3
#define DBG_BSD         4
#define DBG_IOKIT       5
#define DBG_DRIVERS     6
#define DBG_TRACE       7
#define DBG_DLIL        8
#define DBG_WORKQUEUE   9
#define DBG_CORESTORAGE 10
#define DBG_CG          11
#define DBG_MISC        20
#define DBG_SECURITY    30
#define DBG_DYLD        31
#define DBG_QT          32
#define DBG_APPS        33
#define DBG_LAUNCHD     34
#define DBG_PERF        37
#define DBG_IMPORTANCE  38
#define DBG_BANK        40
#define DBG_XPC         41
#define DBG_ATM         42
#define DBG_ARIADNE     43
#define DBG_DAEMON      44
#define DBG_ENERGYTRACE 45
#define DBG_DISPATCH    46
#define DBG_IMG         49
#define DBG_UMALLOC     51


#define DBG_MIG         255

#ifdef PRIVATE

/*
 * Private kdebug userspace API
 */
#ifndef KERNEL
#include <stdbool.h>

/*
 * OS components can use the full precision of the "code" field
 * (Class, SubClass, Code) to inject events using kdebug_trace() by
 * using:
 *
 * kdebug_trace(KDBG_CODE(DBG_XPC, 15, 1) | DBG_FUNC_NONE, 1, 2, 3, 4);
 *
 * These trace points can be included in production code, since they
 * use reserved, non-overlapping ranges. The performance impact when
 * kernel tracing is not enabled is minimal. Classes can be reserved
 * by filing a Radar in xnu|all.
 *
 * 64-bit arguments may be truncated if the system is using a 32-bit
 * kernel.
 *
 * On error, -1 will be returned and errno will indicate the error.
 */
extern int kdebug_trace(
	uint32_t code,
	uint64_t arg1,
	uint64_t arg2,
	uint64_t arg3,
	uint64_t arg4)
	__OSX_AVAILABLE(10.10.2) __IOS_AVAILABLE(8.2);

/*!
 * @function kdebug_trace_string
 *
 * @discussion
 * This function emits strings to kdebug trace along with an ID and allows
 * for previously-traced strings to be overwritten and invalidated.
 *
 * To start tracing a string and generate an ID to use to refer to it:
 *
 *      string_id = kdebug_trace_string(debugid, 0, "string");
 *
 * To replace a string previously traced:
 *
 *      string_id = kdebug_trace_string(debugid, string_id, "new string");
 *
 * To invalidate a string ID:
 *
 *      string_id = kdebug_trace_string(debugid, string_id, NULL);
 *
 * To check for errors:
 *
 *      if ((int64_t)string_id == -1) { perror("string error") }
 *
 * @param debugid
 * The `debugid` to check if its enabled before tracing and include as
 * an argument in the event containing the string.
 *
 * Some classes or subclasses are reserved for specific uses and are not
 * allowed to be used with this function.  No function qualifiers are
 * allowed on `debugid`.
 *
 * @param str_id
 * When 0, a new ID will be generated and returned if tracing is
 * enabled.
 *
 * Otherwise `str_id` must contain an ID that was previously generated
 * with this function.  Clents should pass NULL in `str` if `str_id`
 * is no longer in use.  Otherwise, the string previously mapped to
 * `str_id` will be overwritten with the contents of `str`.
 *
 * @param str
 * A NUL-terminated 'C' string containing the characters that should be
 * traced alongside `str_id`.
 *
 * If necessary, the string will be truncated at an
 * implementation-defined length.  The string must not be the empty
 * string, but can be NULL if a valid `str_id` is provided.
 *
 * @return
 * 0 if tracing is disabled or `debugid` is being filtered out of trace.
 * It can also return (int64_t)-1 if an error occured. Otherwise,
 * it returns the ID to use to refer to the string in future
 * kdebug_trace(2) calls.
 *
 * The errors that can occur are:
 *
 * EINVAL
 *      There are function qualifiers on `debugid`, `str` is empty, or
 *      `str_id` was not generated by this function.
 * EPERM
 *      The `debugid`'s class or subclass is reserved for internal use.
 * EFAULT
 *      `str` is an invalid address or NULL when `str_id` is 0.
 */
extern uint64_t kdebug_trace_string(uint32_t debugid, uint64_t str_id,
                                    const char *str)
	__OSX_AVAILABLE(10.11) __IOS_AVAILABLE(9.0);

/*
 * Although the performance impact of kdebug_trace() when kernel
 * tracing is not enabled is minimal, it may require the caller to
 * perform an expensive calculation/summarization. This cost can be
 * skipped by checking the kdebug_is_enabled() predicate:
 *
 * if (kdebug_is_enabled(KDBG_CODE(DBG_XPC, 15, 1))) {
 *     uint64_t arg1 = ...;
 *     uint64_t arg2 = ...;
 *     kdebug_trace(KDBG_CODE(DBG_XPC, 15, 1) | DBG_FUNC_NONE, arg1, arg2, 0, 0);
 * }
 *
 * If tracing is enabled for the code at the time of the check, 1
 * will be returned. Otherwise, 0 will be returned.
 */
extern bool kdebug_is_enabled(uint32_t code)
	__OSX_AVAILABLE(10.12) __IOS_AVAILABLE(10.0)
	__WATCHOS_AVAILABLE(3.0) __TVOS_AVAILABLE(10.0);

/*
 * Returns a pointer to the userspace typefilter, if one is available.
 * May return NULL.
 */
extern void *kdebug_typefilter(void)
	__OSX_AVAILABLE(10.12) __IOS_AVAILABLE(10.0)
	__WATCHOS_AVAILABLE(3.0) __TVOS_AVAILABLE(10.0);

#endif /* !KERNEL (Private kdebug userspace API) */
#endif /* PRIVATE */

#ifdef XNU_KERNEL_PRIVATE
/* Used in early boot to log strings spanning only a single tracepoint. */
extern void kernel_debug_string_early(const char *message);
/* Used to trace strings within kdebug tracepoints on arbitrary eventids. */
extern void kernel_debug_string_simple(uint32_t eventid, const char *str);
/* Only used by ktrace to reset kdebug.  ktrace_lock must be held. */
extern void kdebug_reset(void);
#endif /* XNU_KERNEL_PRIVATE */

/* **** The Kernel Debug Sub Classes for Mach (DBG_MACH) **** */
#define	DBG_MACH_EXCP_KTRAP_x86	0x02	/* Kernel Traps on x86 */
#define	DBG_MACH_EXCP_DFLT	0x03	/* Data Translation Fault */
#define	DBG_MACH_EXCP_IFLT	0x04	/* Inst Translation Fault */
#define	DBG_MACH_EXCP_INTR	0x05	/* Interrupts */
#define	DBG_MACH_EXCP_ALNG	0x06	/* Alignment Exception */
#define	DBG_MACH_EXCP_UTRAP_x86	0x07	/* User Traps on x86 */
#define	DBG_MACH_EXCP_FP	0x08	/* FP Unavail */
#define	DBG_MACH_EXCP_DECI	0x09	/* Decrementer Interrupt */
#define	DBG_MACH_CHUD		0x0A	/* deprecated name */
#define	DBG_MACH_SIGNPOST	0x0A	/* kernel signposts */
#define	DBG_MACH_EXCP_SC	0x0C	/* System Calls */
#define	DBG_MACH_EXCP_TRACE	0x0D	/* Trace exception */
#define	DBG_MACH_EXCP_EMUL	0x0E	/* Instruction emulated */
#define	DBG_MACH_IHDLR		0x10	/* Interrupt Handlers */
#define	DBG_MACH_IPC		0x20	/* Inter Process Comm */
#define DBG_MACH_RESOURCE       0x25    /* tracing limits, etc */
#define DBG_MACH_VM             0x30    /* Virtual Memory */
#define DBG_MACH_LEAKS          0x31    /* alloc/free */
#define DBG_MACH_WORKINGSET     0x32    /* private subclass for working set related debugging */
#define DBG_MACH_SCHED          0x40    /* Scheduler */
#define DBG_MACH_MSGID_INVALID  0x50    /* Messages - invalid */
#define DBG_MACH_LOCKS		0x60	/* new lock APIs */
#define DBG_MACH_PMAP		0x70	/* pmap */
#define DBG_MACH_CLOCK		0x80	/* clock */
#define DBG_MACH_MP		0x90	/* MP related */
#define DBG_MACH_VM_PRESSURE	0xA0	/* Memory Pressure Events */
#define DBG_MACH_STACKSHOT	0xA1	/* Stackshot/Microstackshot subsystem */
#define DBG_MACH_SFI		0xA2	/* Selective Forced Idle (SFI) */
#define DBG_MACH_ENERGY_PERF	0xA3 /* Energy/performance resource stats */
#define DBG_MACH_SYSDIAGNOSE	0xA4	/* sysdiagnose keychord */
#define DBG_MACH_ZALLOC 	0xA5 	/* Zone allocator */

/* Codes for Scheduler (DBG_MACH_SCHED) */
#define MACH_SCHED              0x0     /* Scheduler */
#define MACH_STACK_ATTACH       0x1     /* stack_attach() */
#define MACH_STACK_HANDOFF      0x2     /* stack_handoff() */
#define MACH_CALL_CONT          0x3     /* call_continuation() */
#define MACH_CALLOUT            0x4     /* callouts */
#define MACH_STACK_DETACH       0x5
#define MACH_MAKE_RUNNABLE      0x6     /* make thread runnable */
#define	MACH_PROMOTE            0x7	/* promoted due to resource */
#define	MACH_DEMOTE             0x8	/* promotion undone */
#define MACH_IDLE               0x9	/* processor idling */
#define MACH_STACK_DEPTH        0xa	/* stack depth at switch */
#define MACH_MOVED              0xb	/* did not use original scheduling decision */
/* unused                       0xc	*/
/* unused                       0xd	*/
#define MACH_FAILSAFE           0xe	/* tripped fixed-pri/RT failsafe */
#define MACH_BLOCK              0xf	/* thread block */
#define MACH_WAIT		0x10	/* thread wait assertion */
#define	MACH_GET_URGENCY	0x14	/* Urgency queried by platform */
#define	MACH_URGENCY		0x15	/* Urgency (RT/BG/NORMAL) communicated
   					 * to platform
					 */
#define	MACH_REDISPATCH		0x16	/* "next thread" thread redispatched */
#define	MACH_REMOTE_AST		0x17	/* AST signal issued to remote processor */
#define	MACH_SCHED_CHOOSE_PROCESSOR	0x18	/* Result of choose_processor */
#define MACH_DEEP_IDLE          0x19	/* deep idle on master processor */
/* unused                       0x1a    was MACH_SCHED_DECAY_PRIORITY */
#define MACH_CPU_THROTTLE_DISABLE	0x1b	/* Global CPU Throttle Disable */
#define MACH_RW_PROMOTE            0x1c	/* promoted due to RW lock promotion */
#define MACH_RW_DEMOTE             0x1d	/* promotion due to RW lock undone */
#define MACH_SCHED_MAINTENANCE     0x1f /* periodic maintenance thread */
#define MACH_DISPATCH              0x20 /* context switch completed */
#define MACH_QUANTUM_HANDOFF       0x21 /* quantum handoff occurred */
#define MACH_MULTIQ_DEQUEUE        0x22 /* Result of multiq dequeue */
#define MACH_SCHED_THREAD_SWITCH   0x23 /* attempt direct context switch to hinted thread */
#define MACH_SCHED_SMT_BALANCE     0x24 /* SMT load balancing ASTs */
#define MACH_REMOTE_DEFERRED_AST   0x25 /* Deferred AST started against remote processor */
#define MACH_REMOTE_CANCEL_AST     0x26 /* Canceled deferred AST for remote processor */
#define MACH_SCHED_CHANGE_PRIORITY 0x27 /* thread sched priority changed */
#define MACH_SCHED_UPDATE_REC_CORES	0x28	/* Change to recommended processor bitmask */
#define MACH_STACK_WAIT            0x29 /* Thread could not be switched-to because of kernel stack shortage */
#define MACH_THREAD_BIND           0x2a /* Thread was bound (or unbound) to a processor */
#define MACH_WAITQ_PROMOTE         0x2b /* Thread promoted by waitq boost */
#define MACH_WAITQ_DEMOTE          0x2c /* Thread demoted from waitq boost */
#define MACH_SCHED_LOAD            0x2d /* load update */
#define MACH_REC_CORES_FAILSAFE    0x2e /* recommended processor failsafe kicked in */
#define MACH_SCHED_QUANTUM_EXPIRED 0x2f /* thread quantum expired */

/* Variants for MACH_MULTIQ_DEQUEUE */
#define MACH_MULTIQ_BOUND     1
#define MACH_MULTIQ_GROUP     2
#define MACH_MULTIQ_GLOBAL    3

/* Arguments for vm_fault (DBG_MACH_VM) */
#define DBG_ZERO_FILL_FAULT   1
#define DBG_PAGEIN_FAULT      2
#define DBG_COW_FAULT         3
#define DBG_CACHE_HIT_FAULT   4
#define DBG_NZF_PAGE_FAULT    5
#define DBG_GUARD_FAULT	      6
#define DBG_PAGEINV_FAULT     7
#define DBG_PAGEIND_FAULT     8
#define DBG_COMPRESSOR_FAULT  9
#define DBG_COMPRESSOR_SWAPIN_FAULT  10

/* Codes for IPC (DBG_MACH_IPC) */
#define	MACH_TASK_SUSPEND			0x0	/* Suspended a task */
#define	MACH_TASK_RESUME 		  	0x1	/* Resumed a task */
#define MACH_THREAD_SET_VOUCHER 		0x2
#define MACH_IPC_MSG_SEND			0x3	/* mach msg send, uniq msg info */
#define MACH_IPC_MSG_RECV			0x4	/* mach_msg receive */
#define MACH_IPC_MSG_RECV_VOUCHER_REFUSED	0x5	/* mach_msg receive, voucher refused */
#define MACH_IPC_KMSG_FREE			0x6	/* kernel free of kmsg data */
#define MACH_IPC_VOUCHER_CREATE			0x7	/* Voucher added to global voucher hashtable */
#define MACH_IPC_VOUCHER_CREATE_ATTR_DATA	0x8	/* Attr data for newly created voucher */
#define MACH_IPC_VOUCHER_DESTROY		0x9	/* Voucher removed from global voucher hashtable */
#define MACH_IPC_KMSG_INFO			0xa	/* Send/Receive info for a kmsg */
#define MACH_IPC_KMSG_LINK			0xb	/* link a kernel kmsg pointer to user mach_msg_header_t */

/* Codes for pmap (DBG_MACH_PMAP) */
#define PMAP__CREATE		0x0
#define PMAP__DESTROY		0x1
#define PMAP__PROTECT		0x2
#define PMAP__PAGE_PROTECT	0x3
#define PMAP__ENTER		0x4
#define PMAP__REMOVE		0x5
#define PMAP__NEST		0x6
#define PMAP__UNNEST		0x7
#define PMAP__FLUSH_TLBS	0x8
#define PMAP__UPDATE_INTERRUPT	0x9
#define PMAP__ATTRIBUTE_CLEAR	0xa
#define PMAP__REUSABLE		0xb
#define PMAP__QUERY_RESIDENT	0xc
#define PMAP__FLUSH_KERN_TLBS	0xd
#define PMAP__FLUSH_DELAYED_TLBS	0xe
#define PMAP__FLUSH_TLBS_TO	0xf
#define PMAP__FLUSH_EPT 	0x10

/* Codes for clock (DBG_MACH_CLOCK) */
#define	MACH_EPOCH_CHANGE	0x0	/* wake epoch change */


/* Codes for Stackshot/Microstackshot (DBG_MACH_STACKSHOT) */
#define MICROSTACKSHOT_RECORD	0x0
#define MICROSTACKSHOT_GATHER	0x1

/* Codes for sysdiagnose */
#define SYSDIAGNOSE_NOTIFY_USER	0x0

/* Codes for Selective Forced Idle (DBG_MACH_SFI) */
#define SFI_SET_WINDOW			0x0
#define SFI_CANCEL_WINDOW		0x1
#define SFI_SET_CLASS_OFFTIME		0x2
#define SFI_CANCEL_CLASS_OFFTIME	0x3
#define SFI_THREAD_DEFER		0x4
#define SFI_OFF_TIMER			0x5
#define SFI_ON_TIMER			0x6
#define SFI_WAIT_CANCELED		0x7
#define SFI_PID_SET_MANAGED		0x8
#define SFI_PID_CLEAR_MANAGED		0x9
#define SFI_GLOBAL_DEFER		0xa

/* Codes for Zone Allocator (DBG_MACH_ZALLOC) */
#define ZALLOC_ZCRAM 			0x0

/* Codes for Mach resource management (DBG_MACH_RESOURCE) */
/* _K32A/B codes start at double the low nibble */
#define RMON_ENABLE_CPUUSAGE_MONITOR    0x001
#define RMON_CPUUSAGE_VIOLATED          0x002
#define RMON_CPUUSAGE_SUSPENDED         0x003
#define RMON_CPUUSAGE_VIOLATED_K32A     0x004
#define RMON_CPUUSAGE_VIOLATED_K32B     0x005
#define RMON_CPUUSAGE_RESUMED           0x006
#define RMON_DISABLE_CPUUSAGE_MONITOR   0x00f

#define RMON_ENABLE_CPUWAKES_MONITOR    0x011
#define RMON_CPUWAKES_VIOLATED          0x012
#define RMON_CPUWAKES_VIOLATED_K32A     0x014
#define RMON_CPUWAKES_VIOLATED_K32B     0x015
#define RMON_DISABLE_CPUWAKES_MONITOR   0x01f

#define RMON_ENABLE_IO_MONITOR          0x021
#define RMON_LOGWRITES_VIOLATED         0x022
#define RMON_PHYSWRITES_VIOLATED        0x023
#define RMON_LOGWRITES_VIOLATED_K32A    0x024
#define RMON_LOGWRITES_VIOLATED_K32B    0x025
#define RMON_DISABLE_IO_MONITOR         0x02f

/* **** The Kernel Debug Sub Classes for Network (DBG_NETWORK) **** */
#define DBG_NETIP	1	/* Internet Protocol */
#define DBG_NETARP	2	/* Address Resolution Protocol */
#define	DBG_NETUDP	3	/* User Datagram Protocol */
#define	DBG_NETTCP	4	/* Transmission Control Protocol */
#define	DBG_NETICMP	5	/* Internet Control Message Protocol */
#define	DBG_NETIGMP	6	/* Internet Group Management Protocol */
#define	DBG_NETRIP	7	/* Routing Information Protocol */
#define	DBG_NETOSPF	8	/* Open Shortest Path First */
#define	DBG_NETISIS	9	/* Intermediate System to Intermediate System */
#define	DBG_NETSNMP	10	/* Simple Network Management Protocol */
#define DBG_NETSOCK	11	/* Socket Layer */

/* For Apple talk */
#define	DBG_NETAARP	100	/* Apple ARP */
#define	DBG_NETDDP	101	/* Datagram Delivery Protocol */
#define	DBG_NETNBP	102	/* Name Binding Protocol */
#define	DBG_NETZIP	103	/* Zone Information Protocol */
#define	DBG_NETADSP	104	/* Name Binding Protocol */
#define	DBG_NETATP	105	/* Apple Transaction Protocol */
#define	DBG_NETASP	106	/* Apple Session Protocol */
#define	DBG_NETAFP	107	/* Apple Filing Protocol */
#define	DBG_NETRTMP	108	/* Routing Table Maintenance Protocol */
#define	DBG_NETAURP	109	/* Apple Update Routing Protocol */

#define	DBG_NETIPSEC	128	/* IPsec Protocol  */
#define	DBG_NETVMNET	129	/* VMNet */

/* **** The Kernel Debug Sub Classes for IOKIT (DBG_IOKIT) **** */
#define DBG_IOINTC			0	/* Interrupt controller */
#define DBG_IOWORKLOOP			1	/* Work from work loop */
#define DBG_IOINTES			2	/* Interrupt event source */
#define DBG_IOCLKES			3	/* Clock event source */
#define DBG_IOCMDQ			4	/* Command queue latencies */
#define DBG_IOMCURS			5	/* Memory Cursor */
#define DBG_IOMDESC			6	/* Memory Descriptors */
#define DBG_IOPOWER			7	/* Power Managerment */
#define DBG_IOSERVICE			8	/* Matching etc. */
#define DBG_IOREGISTRY			9	/* Registry */

/* **** 9-32 reserved for internal IOKit usage **** */

#define DBG_IOSTORAGE		32	/* Storage layers */
#define	DBG_IONETWORK		33	/* Network layers */
#define	DBG_IOKEYBOARD		34	/* Keyboard */
#define	DBG_IOHID		35	/* HID Devices */
#define	DBG_IOAUDIO		36	/* Audio */
#define	DBG_IOSERIAL		37	/* Serial */
#define	DBG_IOTTY		38	/* TTY layers */
#define DBG_IOSAM		39	/* SCSI Architecture Model layers */
#define DBG_IOPARALLELATA   	40	/* Parallel ATA */
#define DBG_IOPARALLELSCSI	41	/* Parallel SCSI */
#define DBG_IOSATA		42	/* Serial-ATA */
#define DBG_IOSAS		43	/* SAS */
#define DBG_IOFIBRECHANNEL	44	/* FiberChannel */
#define DBG_IOUSB		45	/* USB */
#define DBG_IOBLUETOOTH		46	/* Bluetooth */
#define DBG_IOFIREWIRE		47	/* FireWire */
#define DBG_IOINFINIBAND	48	/* Infiniband */
#define DBG_IOCPUPM		49	/* CPU Power Management */
#define DBG_IOGRAPHICS		50	/* Graphics */
#define DBG_HIBERNATE		51	/* hibernation related events */
#define DBG_IOTHUNDERBOLT	52	/* Thunderbolt */


/* Backwards compatibility */
#define	DBG_IOPOINTING		DBG_IOHID			/* OBSOLETE: Use DBG_IOHID instead */
#define DBG_IODISK			DBG_IOSTORAGE		/* OBSOLETE: Use DBG_IOSTORAGE instead */

/* **** The Kernel Debug Sub Classes for Device Drivers (DBG_DRIVERS) **** */
#define DBG_DRVSTORAGE		1	/* Storage layers */
#define	DBG_DRVNETWORK		2	/* Network layers */
#define	DBG_DRVKEYBOARD		3	/* Keyboard */
#define	DBG_DRVHID		4	/* HID Devices */
#define	DBG_DRVAUDIO		5	/* Audio */
#define	DBG_DRVSERIAL		7	/* Serial */
#define DBG_DRVSAM		8	/* SCSI Architecture Model layers */
#define DBG_DRVPARALLELATA  	9	/* Parallel ATA */
#define DBG_DRVPARALLELSCSI	10	/* Parallel SCSI */
#define DBG_DRVSATA		11	/* Serial ATA */
#define DBG_DRVSAS		12	/* SAS */
#define DBG_DRVFIBRECHANNEL	13	/* FiberChannel */
#define DBG_DRVUSB		14	/* USB */
#define DBG_DRVBLUETOOTH	15	/* Bluetooth */
#define DBG_DRVFIREWIRE		16	/* FireWire */
#define DBG_DRVINFINIBAND	17	/* Infiniband */
#define DBG_DRVGRAPHICS		18  	/* Graphics */
#define DBG_DRVSD		19 	/* Secure Digital */
#define DBG_DRVNAND		20	/* NAND drivers and layers */
#define DBG_SSD			21	/* SSD */
#define DBG_DRVSPI		22	/* SPI */
#define DBG_DRVWLAN_802_11	23	/* WLAN 802.11 */

/* Backwards compatibility */
#define	DBG_DRVPOINTING		DBG_DRVHID	/* OBSOLETE: Use DBG_DRVHID instead */
#define DBG_DRVDISK		DBG_DRVSTORAGE	/* OBSOLETE: Use DBG_DRVSTORAGE instead */

/* **** The Kernel Debug Sub Classes for the DLIL Layer (DBG_DLIL) **** */
#define DBG_DLIL_STATIC 1       /* Static DLIL code */
#define DBG_DLIL_PR_MOD 2       /* DLIL Protocol Module */
#define DBG_DLIL_IF_MOD 3       /* DLIL Interface Module */
#define DBG_DLIL_PR_FLT 4       /* DLIL Protocol Filter */
#define DBG_DLIL_IF_FLT 5       /* DLIL Interface FIlter */

/* The Kernel Debug Sub Classes for File System (DBG_FSYSTEM) */
#define DBG_FSRW      0x1     /* reads and writes to the filesystem */
#define DBG_DKRW      0x2     /* reads and writes to the disk */
#define DBG_FSVN      0x3     /* vnode operations (inc. locking/unlocking) */
#define DBG_FSLOOOKUP 0x4     /* namei and other lookup-related operations */
#define DBG_JOURNAL   0x5     /* journaling operations */
#define DBG_IOCTL     0x6     /* ioctl to the disk */
#define DBG_BOOTCACHE 0x7     /* bootcache operations */
#define DBG_HFS       0x8     /* HFS-specific events; see the hfs project */
#define DBG_APFS      0x9     /* APFS-specific events; see the apfs project */
#define DBG_SMB       0xA     /* SMB-specific events; see the smb project */
#define DBG_EXFAT     0xE     /* ExFAT-specific events; see the exfat project */
#define DBG_MSDOS     0xF     /* FAT-specific events; see the msdosfs project */
#define DBG_ACFS      0x10    /* Xsan-specific events; see the XsanFS project */
#define DBG_THROTTLE  0x11    /* I/O Throttling events */
#define DBG_CONTENT_PROT 0xCF /* Content Protection Events: see bsd/sys/cprotect.h */

/*
 * For Kernel Debug Sub Class DBG_HFS, state bits for hfs_update event
 */
#define DBG_HFS_UPDATE_ACCTIME   0x01
#define DBG_HFS_UPDATE_MODTIME	 0x02
#define DBG_HFS_UPDATE_CHGTIME	 0x04
#define DBG_HFS_UPDATE_MODIFIED	 0x08
#define DBG_HFS_UPDATE_FORCE     0x10
#define DBG_HFS_UPDATE_DATEADDED 0x20
#define DBG_HFS_UPDATE_MINOR     0x40
#define DBG_HFS_UPDATE_SKIPPED	 0x80

/* The Kernel Debug Sub Classes for BSD */
#define DBG_BSD_PROC              0x01 /* process/signals related */
#define DBG_BSD_MEMSTAT           0x02 /* memorystatus / jetsam operations */
#define DBG_BSD_EXCP_SC           0x0C /* System Calls */
#define DBG_BSD_AIO               0x0D /* aio (POSIX async IO) */
#define DBG_BSD_SC_EXTENDED_INFO  0x0E /* System Calls, extended info */
#define DBG_BSD_SC_EXTENDED_INFO2 0x0F /* System Calls, extended info */
#define DBG_BSD_KDEBUG_TEST       0xFF /* for testing kdebug */


/* The Codes for BSD subcode class DBG_BSD_PROC */
#define BSD_PROC_EXIT              1  /* process exit */
#define BSD_PROC_FRCEXIT           2  /* Kernel force termination */
#define BSD_PROC_EXEC              3  /* process spawn / exec */
#define BSD_PROC_EXITREASON_CREATE 4  /* exit reason creation */
#define BSD_PROC_EXITREASON_COMMIT 5  /* exit reason commited to a proc */

/* Codes for BSD subcode class DBG_BSD_MEMSTAT */
#define BSD_MEMSTAT_SCAN             1  /* memorystatus thread awake */
#define BSD_MEMSTAT_JETSAM           2  /* LRU jetsam */
#define BSD_MEMSTAT_JETSAM_HIWAT     3  /* highwater jetsam */
#define BSD_MEMSTAT_FREEZE           4  /* freeze process */
#define BSD_MEMSTAT_LATENCY_COALESCE 5  /* delay imposed to coalesce jetsam reports */
#define BSD_MEMSTAT_UPDATE           6  /* priority update */
#define BSD_MEMSTAT_IDLE_DEMOTE      7  /* idle demotion fired */
#define BSD_MEMSTAT_CLEAR_ERRORS     8  /* reset termination error state */
#define BSD_MEMSTAT_DIRTY_TRACK      9  /* track the process state */
#define BSD_MEMSTAT_DIRTY_SET       10  /* set the process state */
#define BSD_MEMSTAT_DIRTY_CLEAR     11  /* clear the process state */
#ifdef  PRIVATE
#define BSD_MEMSTAT_GRP_SET_PROP    12  /* set group properties */
#define BSD_MEMSTAT_DO_KILL         13  /* memorystatus kills */
#endif /* PRIVATE */

/* The Kernel Debug Sub Classes for DBG_TRACE */
#define DBG_TRACE_DATA      0
#define DBG_TRACE_STRING    1
#define	DBG_TRACE_INFO	    2

/* The Kernel Debug events: */
#define	TRACE_DATA_NEWTHREAD		(TRACEDBG_CODE(DBG_TRACE_DATA, 1))
#define	TRACE_DATA_EXEC			(TRACEDBG_CODE(DBG_TRACE_DATA, 2))
#define	TRACE_DATA_THREAD_TERMINATE	(TRACEDBG_CODE(DBG_TRACE_DATA, 3))
#define TRACE_DATA_THREAD_TERMINATE_PID	(TRACEDBG_CODE(DBG_TRACE_DATA, 4))
#define TRACE_STRING_GLOBAL		(TRACEDBG_CODE(DBG_TRACE_STRING, 0))
#define	TRACE_STRING_NEWTHREAD		(TRACEDBG_CODE(DBG_TRACE_STRING, 1))
#define	TRACE_STRING_EXEC		(TRACEDBG_CODE(DBG_TRACE_STRING, 2))
#define TRACE_STRING_PROC_EXIT		(TRACEDBG_CODE(DBG_TRACE_STRING, 3))
#define TRACE_STRING_THREADNAME		(TRACEDBG_CODE(DBG_TRACE_STRING, 4))
#define TRACE_STRING_THREADNAME_PREV	(TRACEDBG_CODE(DBG_TRACE_STRING, 5))
#define	TRACE_PANIC			(TRACEDBG_CODE(DBG_TRACE_INFO, 0))
#define	TRACE_TIMESTAMPS		(TRACEDBG_CODE(DBG_TRACE_INFO, 1))
#define	TRACE_LOST_EVENTS		(TRACEDBG_CODE(DBG_TRACE_INFO, 2))
#define	TRACE_WRITING_EVENTS		(TRACEDBG_CODE(DBG_TRACE_INFO, 3))
#define	TRACE_INFO_STRING		(TRACEDBG_CODE(DBG_TRACE_INFO, 4))

/* The Kernel Debug Sub Classes for DBG_CORESTORAGE */
#define DBG_CS_IO	0

/* The Kernel Debug Sub Classes for DBG_SECURITY */
#define	DBG_SEC_KERNEL	0	/* raw entropy collected by the kernel */

/* Sub-class codes for CoreGraphics (DBG_CG) are defined in its component. */

/* The Kernel Debug Sub Classes for DBG_MISC */
#define DBG_EVENT	0x10
#define	DBG_BUFFER	0x20

/* The Kernel Debug Sub Classes for DBG_DYLD */
#define DBG_DYLD_UUID (5)

/* Kernel Debug codes for the DBG_DYLD_UUID subclass */
#define DBG_DYLD_UUID_MAP_A             (0)
#define DBG_DYLD_UUID_MAP_B             (1)
#define DBG_DYLD_UUID_MAP_32_A          (2)
#define DBG_DYLD_UUID_MAP_32_B          (3)
#define DBG_DYLD_UUID_MAP_32_C          (4)
#define DBG_DYLD_UUID_UNMAP_A           (5)
#define DBG_DYLD_UUID_UNMAP_B           (6)
#define DBG_DYLD_UUID_UNMAP_32_A        (7)
#define DBG_DYLD_UUID_UNMAP_32_B        (8)
#define DBG_DYLD_UUID_UNMAP_32_C        (9)
#define DBG_DYLD_UUID_SHARED_CACHE_A    (10)
#define DBG_DYLD_UUID_SHARED_CACHE_B    (11)
#define DBG_DYLD_UUID_SHARED_CACHE_32_A (12)
#define DBG_DYLD_UUID_SHARED_CACHE_32_B (13)
#define DBG_DYLD_UUID_SHARED_CACHE_32_C (14)

/* The Kernel Debug modifiers for the DBG_DKRW sub class */
#define DKIO_DONE 	0x01
#define DKIO_READ	0x02
#define DKIO_ASYNC	0x04
#define DKIO_META	0x08
#define DKIO_PAGING	0x10
#define DKIO_THROTTLE	0x20 /* Deprecated, still provided so fs_usage doesn't break */
#define DKIO_PASSIVE	0x40
#define DKIO_NOCACHE	0x80
#define DKIO_TIER_MASK	0xF00
#define DKIO_TIER_SHIFT	8
#define DKIO_TIER_UPGRADE 0x1000

/* Kernel Debug Sub Classes for Applications (DBG_APPS) */
#define DBG_APP_LOGINWINDOW     0x03
#define DBG_APP_AUDIO           0x04
#define DBG_APP_SYSTEMUI        0x05
#define DBG_APP_SIGNPOST        0x0A
#define DBG_APP_APPKIT          0x0C
#define DBG_APP_DFR             0x0E
#define DBG_APP_SAMBA           0x80
#define DBG_APP_EOSSUPPORT      0x81

/* Kernel Debug codes for Throttling (DBG_THROTTLE) */
#define OPEN_THROTTLE_WINDOW	0x1
#define PROCESS_THROTTLED	0x2
#define IO_THROTTLE_DISABLE	0x3


/* Subclasses for MACH Importance Policies (DBG_IMPORTANCE) */
/* TODO: Split up boost and task policy? */
#define IMP_ASSERTION           0x10    /* Task takes/drops a boost assertion */
#define IMP_BOOST               0x11    /* Task boost level changed */
#define IMP_MSG                 0x12    /* boosting message sent by donating task on donating port */
#define IMP_WATCHPORT           0x13    /* port marked as watchport, and boost was transferred to the watched task */
#define IMP_TASK_SUPPRESSION    0x17    /* Task changed suppression behaviors */
#define IMP_TASK_APPTYPE        0x18    /* Task launched with apptype */
#define IMP_UPDATE              0x19    /* Requested -> effective calculation */
#define IMP_USYNCH_QOS_OVERRIDE 0x1A    /* Userspace synchronization applied QoS override to resource owning thread */
#define IMP_DONOR_CHANGE        0x1B    /* The iit_donor bit changed */
#define IMP_MAIN_THREAD_QOS     0x1C    /* The task's main thread QoS was set */
/* DBG_IMPORTANCE subclasses  0x20 - 0x3F reserved for task policy flavors */

/* Codes for IMP_ASSERTION */
#define IMP_HOLD                0x2     /* Task holds a boost assertion */
#define IMP_DROP                0x4     /* Task drops a boost assertion */
#define IMP_EXTERN              0x8     /* boost assertion moved from kernel to userspace responsibility (externalized) */

/* Codes for IMP_BOOST */
#define IMP_BOOSTED             0x1
#define IMP_UNBOOSTED           0x2     /* Task drops a boost assertion */

/* Codes for IMP_MSG */
#define IMP_MSG_SEND            0x1     /* boosting message sent by donating task on donating port */
#define IMP_MSG_DELV            0x2     /* boosting message delivered to task */

/* Codes for IMP_UPDATE */
#define IMP_UPDATE_TASK_CREATE  0x1

/* Codes for IMP_USYNCH_QOS_OVERRIDE */
#define IMP_USYNCH_ADD_OVERRIDE		0x0		/* add override for a contended resource */
#define IMP_USYNCH_REMOVE_OVERRIDE	0x1		/* remove override for a contended resource */

/* Codes for IMP_DONOR_CHANGE */
#define IMP_DONOR_UPDATE_LIVE_DONOR_STATE	0x0
#define IMP_DONOR_INIT_DONOR_STATE		0x1

/* Subclasses for MACH Bank Voucher Attribute Manager (DBG_BANK) */
#define BANK_ACCOUNT_INFO		0x10	/* Trace points related to bank account struct */
#define BANK_TASK_INFO			0x11	/* Trace points related to bank task struct */

/* Subclasses for MACH ATM Voucher Attribute Manager (ATM) */
#define ATM_SUBAID_INFO			0x10
#define ATM_GETVALUE_INFO		0x20
#define ATM_UNREGISTER_INFO		0x30

/* Codes for BANK_ACCOUNT_INFO */
#define BANK_SETTLE_CPU_TIME		0x1	/* Bank ledger(chit) rolled up to tasks. */
#define BANK_SECURE_ORIGINATOR_CHANGED	0x2	/* Secure Originator changed. */

/* Codes for ATM_SUBAID_INFO */
#define ATM_MIN_CALLED				0x1
#define ATM_LINK_LIST_TRIM			0x2

/* Codes for ATM_GETVALUE_INFO */
#define ATM_VALUE_REPLACED			0x1
#define ATM_VALUE_ADDED 			0x2

/* Codes for ATM_UNREGISTER_INFO */
#define ATM_VALUE_UNREGISTERED			0x1
#define ATM_VALUE_DIFF_MAILBOX			0x2

/* Kernel Debug Sub Classes for daemons (DBG_DAEMON) */
#define DBG_DAEMON_COREDUET			0x1

/* Subclasses for the user space allocator */
#define DBG_UMALLOC_EXTERNAL			0x1
#define DBG_UMALLOC_INTERNAL			0x2
/**********************************************************************/

#define KDBG_MIGCODE(msgid) ((DBG_MIG << KDBG_CLASS_OFFSET) | \
                             (((msgid) & 0x3fffff) << KDBG_CODE_OFFSET))

#define MACHDBG_CODE(SubClass, code) KDBG_CODE(DBG_MACH, SubClass, code)
#define NETDBG_CODE(SubClass, code) KDBG_CODE(DBG_NETWORK, SubClass, code)
#define FSDBG_CODE(SubClass, code) KDBG_CODE(DBG_FSYSTEM, SubClass, code)
#define BSDDBG_CODE(SubClass, code) KDBG_CODE(DBG_BSD, SubClass, code)
#define IOKDBG_CODE(SubClass, code) KDBG_CODE(DBG_IOKIT, SubClass, code)
#define DRVDBG_CODE(SubClass, code) KDBG_CODE(DBG_DRIVERS, SubClass, code)
#define TRACEDBG_CODE(SubClass,code) KDBG_CODE(DBG_TRACE, SubClass, code)
#define MISCDBG_CODE(SubClass,code) KDBG_CODE(DBG_MISC, SubClass, code)
#define DLILDBG_CODE(SubClass,code) KDBG_CODE(DBG_DLIL, SubClass, code)
#define SECURITYDBG_CODE(SubClass,code) KDBG_CODE(DBG_SECURITY, SubClass, code)
#define DYLDDBG_CODE(SubClass,code) KDBG_CODE(DBG_DYLD, SubClass, code)
#define QTDBG_CODE(SubClass,code) KDBG_CODE(DBG_QT, SubClass, code)
#define APPSDBG_CODE(SubClass,code) KDBG_CODE(DBG_APPS, SubClass, code)
#define ARIADNEDBG_CODE(SubClass, code) KDBG_CODE(DBG_ARIADNE, SubClass, code)
#define DAEMONDBG_CODE(SubClass, code) KDBG_CODE(DBG_DAEMON, SubClass, code)
#define CPUPM_CODE(code) IOKDBG_CODE(DBG_IOCPUPM, code)

#define KMEM_ALLOC_CODE MACHDBG_CODE(DBG_MACH_LEAKS, 0)
#define KMEM_ALLOC_CODE_2 MACHDBG_CODE(DBG_MACH_LEAKS, 1)
#define KMEM_FREE_CODE MACHDBG_CODE(DBG_MACH_LEAKS, 2)
#define KMEM_FREE_CODE_2 MACHDBG_CODE(DBG_MACH_LEAKS, 3)
#define ZALLOC_CODE MACHDBG_CODE(DBG_MACH_LEAKS, 4)
#define ZALLOC_CODE_2 MACHDBG_CODE(DBG_MACH_LEAKS, 5)
#define ZFREE_CODE MACHDBG_CODE(DBG_MACH_LEAKS, 6)
#define ZFREE_CODE_2 MACHDBG_CODE(DBG_MACH_LEAKS, 7)

#define PMAP_CODE(code) MACHDBG_CODE(DBG_MACH_PMAP, code)


#define IMPORTANCE_CODE(SubClass, code) KDBG_CODE(DBG_IMPORTANCE, (SubClass), (code))
#define BANK_CODE(SubClass, code) KDBG_CODE(DBG_BANK, (SubClass), (code))
#define ATM_CODE(SubClass, code) KDBG_CODE(DBG_ATM, (SubClass), (code))

/* Kernel Debug Macros for specific daemons */
#define COREDUETDBG_CODE(code) DAEMONDBG_CODE(DBG_DAEMON_COREDUET, code)

/*
 * To use kdebug in the kernel:
 *
 * #include <sys/kdebug.h>
 *
 * #define DBG_NETIPINIT NETDBG_CODE(DBG_NETIP, 1)
 *
 * void
 * ip_init(void)
 * {
 *     KDBG(DBG_NETIPINIT | DBG_FUNC_START, 1, 2, 3, 4);
 *     ...
 *     KDBG(DBG_NETIPINIT);
 *     ...
 *     KDBG(DBG_NETIPINIT | DBG_FUNC_END);
 * }
 */

#ifdef KERNEL_PRIVATE

/*
 * The KDBG{,_DEBUG,_RELEASE,_FILTERED} macros are the preferred method of
 * making tracepoints.
 *
 * Kernel pointers must be unslid or permuted using VM_KERNEL_UNSLIDE_OR_PERM.
 * Do not trace any sensitive data.
 */

/*
 * Traced on debug and development (and release OS X) kernels.
 */
#define KDBG(x, ...) KDBG_(, x, ## __VA_ARGS__, 4, 3, 2, 1, 0)

/*
 * Traced on debug and development (and release OS X) kernels if explicitly
 * requested.  Omitted from tracing without a typefilter.
 */
#define KDBG_FILTERED(x, ...) KDBG_(_FILTERED, x, ## __VA_ARGS__, 4, 3, 2, 1, 0)

/*
 * Traced on debug, development, and release kernels.
 *
 * Only use this tracepoint if the events are required for a shipping trace
 * tool.
 */
#define KDBG_RELEASE(x, ...) KDBG_(_RELEASE, x, ## __VA_ARGS__, 4, 3, 2, 1, 0)

/*
 * Traced only on debug kernels.
 */
#define KDBG_DEBUG(x, ...) KDBG_(_DEBUG, x, ## __VA_ARGS__, 4, 3, 2, 1, 0)

#define KDBG_(f, x, a, b, c, d, n, ...) KDBG##n(f, x, a, b, c, d)
#define KDBG0(f, x, a, b, c, d) KERNEL_DEBUG_CONSTANT##f(x, 0, 0, 0, 0, 0)
#define KDBG1(f, x, a, b, c, d) KERNEL_DEBUG_CONSTANT##f(x, a, 0, 0, 0, 0)
#define KDBG2(f, x, a, b, c, d) KERNEL_DEBUG_CONSTANT##f(x, a, b, 0, 0, 0)
#define KDBG3(f, x, a, b, c, d) KERNEL_DEBUG_CONSTANT##f(x, a, b, c, 0, 0)
#define KDBG4(f, x, a, b, c, d) KERNEL_DEBUG_CONSTANT##f(x, a, b, c, d, 0)

#endif /* defined(KERNEL_PRIVATE) */

extern unsigned int kdebug_enable;

/*
 * Bits used by kdebug_enable.  These control which events are traced at
 * runtime.
 */
#define KDEBUG_ENABLE_TRACE   (1U << 0)
#define KDEBUG_ENABLE_ENTROPY (1U << 1) /* obsolete */
#define KDEBUG_ENABLE_CHUD    (1U << 2) /* obsolete */
#define KDEBUG_ENABLE_PPT     (1U << 3)
#define KDEBUG_ENABLE_SERIAL  (1U << 4)

#define KDEBUG_TRACE (KDEBUG_ENABLE_TRACE)

/*
 * Specify KDEBUG_PPT to indicate that the event belongs to the limited PPT set.
 * PPT is deprecated -- use a typefilter and the PPTDBG class instead.
 */
#define KDEBUG_PPT    (KDEBUG_ENABLE_PPT)
#define KDEBUG_COMMON (KDEBUG_ENABLE_TRACE | KDEBUG_ENABLE_PPT)

/*
 * The kernel debug configuration level.  These values control which events are
 * compiled in under different build configurations.
 *
 * Infer the supported kernel debug event level from config option.  Use
 * (KDEBUG_LEVEL >= KDEBUG_LEVEL_STANDARD) as a guard to protect unaudited debug
 * code.
 */
#define KDEBUG_LEVEL_NONE     0
#define KDEBUG_LEVEL_IST      1
#define KDEBUG_LEVEL_STANDARD 2
#define KDEBUG_LEVEL_FULL     3

#if NO_KDEBUG
#define KDEBUG_LEVEL KDEBUG_LEVEL_NONE
#elif IST_KDEBUG
#define KDEBUG_LEVEL KDEBUG_LEVEL_IST
	// currently configured for the iOS release kernel
#elif KDEBUG
#define KDEBUG_LEVEL KDEBUG_LEVEL_FULL
#else
#define KDEBUG_LEVEL KDEBUG_LEVEL_STANDARD
/*
 * Currently, all other kernel configurations (development, etc) build with
 * KDEBUG_LEVEL_STANDARD.  As a result, KERNEL_DEBUG_CONSTANT*() are on by
 * default but KERNEL_DEBUG*() are not.
 */
#endif

#ifdef XNU_KERNEL_PRIVATE
#define KDBG_IMPROBABLE __improbable
#else
#define KDBG_IMPROBABLE
#endif

/*
 * KERNEL_DEBUG_CONSTANT_FILTERED events are omitted from tracing unless they
 * are explicitly requested in the typefilter.  They are not emitted when
 * tracing without a typefilter.
 */
#if (KDEBUG_LEVEL >= KDEBUG_LEVEL_STANDARD)
#define KERNEL_DEBUG_CONSTANT_FILTERED(x, a, b, c, d, ...)             \
	do {                                                               \
		if (KDBG_IMPROBABLE(kdebug_enable & ~KDEBUG_ENABLE_PPT)) {     \
			kernel_debug_filtered((x), (uintptr_t)(a), (uintptr_t)(b), \
				(uintptr_t)(c), (uintptr_t)(d));                       \
		}                                                              \
	} while (0)
#else /* (KDEBUG_LEVEL >= KDEBUG_LEVEL_STANDARD) */
#define KERNEL_DEBUG_CONSTANT_FILTERED(type, x, a, b, c, d, ...) do {} while (0)
#endif /* (KDEBUG_LEVEL >= KDEBUG_LEVEL_STANDARD) */

#if (KDEBUG_LEVEL >= KDEBUG_LEVEL_STANDARD)
#define KERNEL_DEBUG_CONSTANT(x, a, b, c, d, e)                               \
	do {                                                                      \
		if (KDBG_IMPROBABLE(kdebug_enable & ~KDEBUG_ENABLE_PPT)) {            \
			kernel_debug((x), (uintptr_t)(a), (uintptr_t)(b), (uintptr_t)(c), \
				(uintptr_t)(d),(uintptr_t)(e));                               \
		}                                                                     \
	} while (0)

/*
 * DO NOT USE THIS MACRO -- it breaks fundamental assumptions about ktrace and
 * is only meant to be used by the pthread kext and other points in the kernel
 * where the thread ID must be provided explicitly.
 */
#define KERNEL_DEBUG_CONSTANT1(x, a, b, c, d, e)                               \
	do {                                                                       \
		if (KDBG_IMPROBABLE(kdebug_enable & ~KDEBUG_ENABLE_PPT)) {             \
			kernel_debug1((x), (uintptr_t)(a), (uintptr_t)(b), (uintptr_t)(c), \
			(uintptr_t)(d), (uintptr_t)(e));                                   \
		}                                                                      \
	} while (0)

#define KERNEL_DEBUG_EARLY(x, a, b, c, d)                                 \
	do {                                                                  \
		kernel_debug_early((uint32_t)(x), (uintptr_t)(a), (uintptr_t)(b), \
			(uintptr_t)(c), (uintptr_t)(d));                              \
	} while (0)
#else /* (KDEBUG_LEVEL >= KDEBUG_LEVEL_STANDARD) */
#define KERNEL_DEBUG_CONSTANT(x, a, b, c, d, e) do {} while (0)
#define KERNEL_DEBUG_CONSTANT1(x, a, b, c, d, e) do {} while (0)
#define KERNEL_DEBUG_EARLY(x, a, b, c, d) do {} while (0)
#endif /* (KDEBUG_LEVEL >= KDEBUG_LEVEL_STANDARD) */

/*
 * KERNEL_DEBUG_CONSTANT_IST (in-system trace) events provide an audited subset
 * of tracepoints for userland system tracing tools.  This tracing level was
 * created by 8857227 to protect fairplayd and other PT_DENY_ATTACH processes.
 * It has two effects: only KERNEL_DEBUG_CONSTANT_IST() traces are emitted and
 * any PT_DENY_ATTACH processes will only emit basic traces as defined by the
 * kernel_debug_filter() routine.
 */
#define KERNEL_DEBUG_CONSTANT_RELEASE(x, a, b, c, d, e) \
	KERNEL_DEBUG_CONSTANT_IST(~KDEBUG_ENABLE_PPT, x, a, b, c, d, 0)

#if (KDEBUG_LEVEL >= KDEBUG_LEVEL_IST)
#define KERNEL_DEBUG_CONSTANT_IST(type, x, a, b, c, d, e)                     \
	do {                                                                      \
		if (KDBG_IMPROBABLE(kdebug_enable & (type))) {                        \
			kernel_debug((x), (uintptr_t)(a), (uintptr_t)(b), (uintptr_t)(c), \
				(uintptr_t)(d), (uintptr_t)(e));                              \
		}                                                                     \
	} while (0)
#else /* (KDEBUG_LEVEL >= KDEBUG_LEVEL_IST) */
#define KERNEL_DEBUG_CONSTANT_IST(type, x, a, b, c, d, e) do {} while (0)
#endif /* (KDEBUG_LEVEL >= KDEBUG_LEVEL_IST) */

#if NO_KDEBUG
#define __kdebug_constant_only __unused
#endif

/*
 * KERNEL_DEBUG events are only traced for DEBUG kernels.
 */
#define KERNEL_DEBUG_CONSTANT_DEBUG(x, a, b, c, d, e) \
	KERNEL_DEBUG(x, a, b, c, d, e)

#if (KDEBUG_LEVEL >= KDEBUG_LEVEL_FULL)
#define __kdebug_only

#define KERNEL_DEBUG(x, a, b, c, d, e)                                  \
	do {                                                                \
		if (KDBG_IMPROBABLE(kdebug_enable & ~KDEBUG_ENABLE_PPT)) {      \
			kernel_debug((uint32_t)(x), (uintptr_t)(a), (uintptr_t)(b), \
				(uintptr_t)(c), (uintptr_t)(d), (uintptr_t)(e));        \
		}                                                               \
	} while (0)

/*
 * DO NOT USE THIS MACRO -- see warning above for KERNEL_DEBUG_CONSTANT1.
 */
#define KERNEL_DEBUG1(x, a, b, c, d, e)                                  \
	do {                                                                 \
		if (KDBG_IMPROBABLE(kdebug_enable & ~KDEBUG_ENABLE_PPT)) {       \
			kernel_debug1((uint32_t)(x), (uintptr_t)(a), (uintptr_t)(b), \
				(uintptr_t)(c), (uintptr_t)(d), (uintptr_t)(e));         \
		}                                                                \
	} while (0)

#else /* (KDEBUG_LEVEL >= KDEBUG_LEVEL_FULL) */
#define __kdebug_only __unused

#define KERNEL_DEBUG(x,a,b,c,d,e) do {} while (0)
#define KERNEL_DEBUG1(x,a,b,c,d,e) do {} while (0)
#endif /* (KDEBUG_LEVEL >= KDEBUG_LEVEL_FULL) */


extern void kernel_debug(
		uint32_t  debugid,
		uintptr_t arg1,
		uintptr_t arg2,
		uintptr_t arg3,
		uintptr_t arg4,
		uintptr_t arg5);

extern void kernel_debug1(
		uint32_t  debugid,
		uintptr_t arg1,
		uintptr_t arg2,
		uintptr_t arg3,
		uintptr_t arg4,
		uintptr_t arg5);

extern void kernel_debug_filtered(
		uint32_t  debugid,
		uintptr_t arg1,
		uintptr_t arg2,
		uintptr_t arg3,
		uintptr_t arg4);

extern void kernel_debug_early(
		uint32_t  debugid,
		uintptr_t arg1,
		uintptr_t arg2,
		uintptr_t arg3,
		uintptr_t arg4);

/*
 * EnergyTracing macros.
 */

#if (KDEBUG_LEVEL >= KDEBUG_LEVEL_IST)
// whether to bother calculating EnergyTracing inputs
// could change in future to see if DBG_ENERGYTRACE is active
#define ENTR_SHOULDTRACE kdebug_enable
// encode logical EnergyTracing into 32/64 KDebug trace
#define ENTR_KDTRACE(component, opcode, lifespan, id, quality, value) 	\
do {									\
    uint32_t kdcode__;							\
    uintptr_t highval__, lowval__, mask__ = 0xffffffff;			\
    kdcode__ = KDBG_CODE(DBG_ENERGYTRACE,component,opcode)|(lifespan); 	\
    highval__ = ((value) >> 32) & mask__;				\
    lowval__ = (value) & mask__;					\
    ENTR_KDTRACEFUNC(kdcode__, id, quality, highval__, lowval__);	\
} while(0)

/*
    Trace the association of two existing activations.

    An association is traced as a modification to the parent activation.
    In order to fit the sub-activation's component, activation code, and
    activation ID into a kdebug tracepoint, the arguments that would hold
    the value are left separate, and one stores the component and opcode
    of the sub-activation, while the other stores the pointer-sized
    activation ID.

	    arg2                   arg3               arg4
    +-----------------+  +~+----+----+--------+   +----------+
    |kEnTrModAssociate|  | |    |    |        |   |          |
    +-----------------+  +~+----+----+--------+   +----------+
			    8-bits unused       sub-activation ID
				 8-bit sub-component
				      16-bit sub-opcode

*/
#define kEnTrModAssociate (1 << 28)
#define ENTR_KDASSOCIATE(par_comp, par_opcode, par_act_id,		\
                         sub_comp, sub_opcode, sub_act_id)              \
do {									\
    unsigned sub_compcode = ((unsigned)sub_comp << 16) | sub_opcode;	\
    ENTR_KDTRACEFUNC(KDBG_CODE(DBG_ENERGYTRACE,par_comp,par_opcode),	\
		     par_act_id, kEnTrModAssociate, sub_compcode,	\
		     sub_act_id);					\
} while(0)

#else /* (KDEBUG_LEVEL >= KDEBUG_LEVEL_IST) */

#define ENTR_SHOULDTRACE FALSE
#define ENTR_KDTRACE(component, opcode, lifespan, id, quality, value) 	\
				    do {} while (0)
#define ENTR_KDASSOCIATE(par_comp, par_opcode, par_act_id,		\
		   	 sub_comp, sub_opcode, sub_act_id)		\
				    do {} while (0)

#endif /* (KDEBUG_LEVEL >= KDEBUG_LEVEL_IST) */

#ifdef KERNEL_PRIVATE
/*
 * kernel_debug_string provides the same functionality as the
 * kdebug_trace_string syscall as a KPI.  str_id is an in/out
 * parameter that, if it's pointing to a string ID of 0, will
 * receive a generated ID.  If it provides a value in str_id,
 * then that will be used, instead.
 *
 * Returns an errno indicating the type of failure.
 */
extern int
kernel_debug_string(uint32_t debugid, uint64_t *str_id, const char *str);

/*
 * kernel_debug_disable disables event logging, but leaves any buffers
 * intact.
 */
extern void kernel_debug_disable(void);
#endif

/*
 * Bits set in the comm page for kdebug.
 */
#define KDEBUG_COMMPAGE_ENABLE_TRACE      0x1
#define KDEBUG_COMMPAGE_ENABLE_TYPEFILTER 0x2 /* Forced to false if ENABLE_TRACE is 0 */

// for EnergyTracing user space & clients
#define kEnTrCompKernel	    2

/*
    EnergyTracing opcodes

    Activations use DBG_FUNC_START/END.
    Events are DBG_FUNC_NONE.
 */

/* Socket reads and writes are uniquely identified by the (sanitized)
   pointer to the socket struct in question.  To associate this address
   with the user space file descriptor, we have a socket activation with
   the FD as its identifier and the socket struct pointer as its value.
*/
#define kEnTrActKernSocket	1
#define kEnTrActKernSockRead	2
#define kEnTrActKernSockWrite	3

#define kEnTrActKernPoll	10
#define kEnTrActKernSelect	11
#define kEnTrActKernKQWait	12

// events
#define kEnTrEvUnblocked	256

// EnergyTracing flags (the low-order 16 bits of 'quality')
#define kEnTrFlagNonBlocking	1 << 0
#define kEnTrFlagNoWork		1 << 1

// and now the internal mechanism
#ifdef KERNEL_PRIVATE

// 20452597 requests that the trace macros not take an argument it throws away
#define KERNEL_DBG_IST_SANE(x, a, b, c, d) 				\
        KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE, x, a, b, c, d,          \
                                  0 /*__unused in kernel_debug()*/)
#define ENTR_KDTRACEFUNC KERNEL_DBG_IST_SANE

// value is int64_t, quality is uint32_t
#define KERNEL_ENERGYTRACE(opcode, lifespan, id, quality, value)        \
            ENTR_KDTRACE(kEnTrCompKernel, opcode, lifespan, id,         \
                         quality, value)
#define KERNEL_ENTR_ASSOCIATE(par_opcode, par_act_id, sub_opcode, sub_act_id) \
	    ENTR_KDASSOCIATE(kEnTrCompKernel, par_opcode, par_act_id,	\
			     kEnTrCompKernel, sub_opcode, sub_act_id)

// end EnergyTracing


#include <mach/boolean.h>

#define NUMPARMS 23

struct proc;

extern boolean_t kdebug_debugid_enabled(uint32_t debugid);
extern uint32_t kdebug_commpage_state(void);
extern void kdebug_lookup_gen_events(long *dbg_parms, int dbg_namelen, void *dp, boolean_t lookup);
extern void kdbg_trace_data(struct proc *proc, long *arg_pid);

extern void kdbg_trace_string(struct proc *proc, long *arg1, long *arg2, long *arg3, long *arg4);

extern void kdbg_dump_trace_to_file(const char *);
void kdebug_boot_trace(unsigned int n_events, char *filterdesc);
void kdebug_trace_start(unsigned int n_events, const char *filterdesc, boolean_t need_map);
struct task;
extern void kdbg_get_task_name(char*, int, struct task *task);
boolean_t disable_wrap(uint32_t *old_slowcheck, uint32_t *old_flags);
void enable_wrap(uint32_t old_slowcheck, boolean_t lostevents);
void release_storage_unit(int cpu,  uint32_t storage_unit);
int allocate_storage_unit(int cpu);

#define KDBG_CLASS_ENCODE(Class, SubClass) KDBG_EVENTID(Class, SubClass, 0)
#define KDBG_CLASS_DECODE(Debugid)         (Debugid & KDBG_CSC_MASK)

#endif /* KERNEL_PRIVATE */
#endif /* __APPLE_API_UNSTABLE */
__END_DECLS

#ifdef PRIVATE
#ifdef __APPLE_API_PRIVATE
/*
 * private kernel_debug definitions
 */

typedef struct {
	uint64_t timestamp;
	uintptr_t arg1;
	uintptr_t arg2;
	uintptr_t arg3;
	uintptr_t arg4;
	uintptr_t arg5; /* the thread ID */
	uint32_t debugid;
#if defined(__LP64__)
	uint32_t cpuid;
	uintptr_t unused;
#endif
} kd_buf;

#if !defined(__LP64__)
#define KDBG_TIMESTAMP_MASK 0x00ffffffffffffffULL
#define KDBG_CPU_MASK       0xff00000000000000ULL
#define KDBG_CPU_SHIFT      56
static inline void
kdbg_set_cpu(kd_buf *kp, int cpu)
{
	kp->timestamp = (kp->timestamp & KDBG_TIMESTAMP_MASK) |
				(((uint64_t) cpu) << KDBG_CPU_SHIFT);
}
static inline int
kdbg_get_cpu(kd_buf *kp)
{
	return (int) (((kp)->timestamp & KDBG_CPU_MASK) >> KDBG_CPU_SHIFT);
}
static inline void
kdbg_set_timestamp(kd_buf *kp, uint64_t thetime)
{
	kp->timestamp = thetime & KDBG_TIMESTAMP_MASK;
}
static inline uint64_t
kdbg_get_timestamp(kd_buf *kp)
{
	return kp->timestamp & KDBG_TIMESTAMP_MASK;
}
static inline void
kdbg_set_timestamp_and_cpu(kd_buf *kp, uint64_t thetime, int cpu)
{
	kp->timestamp = (thetime & KDBG_TIMESTAMP_MASK) |
				(((uint64_t) cpu) << KDBG_CPU_SHIFT);
}
#else
#define KDBG_TIMESTAMP_MASK		0xffffffffffffffffULL
static inline void
kdbg_set_cpu(kd_buf *kp, int cpu)
{
	kp->cpuid = cpu;
}
static inline int
kdbg_get_cpu(kd_buf *kp)
{
	return kp->cpuid;
}
static inline void
kdbg_set_timestamp(kd_buf *kp, uint64_t thetime)
{
	kp->timestamp = thetime;
}
static inline uint64_t
kdbg_get_timestamp(kd_buf *kp)
{
	return kp->timestamp;
}
static inline void
kdbg_set_timestamp_and_cpu(kd_buf *kp, uint64_t thetime, int cpu)
{
	kdbg_set_timestamp(kp, thetime);
	kdbg_set_cpu(kp, cpu);
}
#endif

/*
 * 2^16 bits (8 kilobytes), one for each possible class/subclass combination
 */
#define KDBG_TYPEFILTER_BITMAP_SIZE ((256 * 256) / 8)

/*
 * Bits for kd_ctrl_page.flags, KERN_KD{D,E}FLAGS.
 */
#define KDBG_INIT       (1U << 0) /* obsolete */
/* disable tracing when buffers are full */
#define KDBG_NOWRAP     (1U << 1)
#define KDBG_FREERUN    (1U << 2) /* obsolete */
/* buffer has wrapped */
#define KDBG_WRAPPED    (1U << 3)
/* flags that are allowed to be set by user space */
#define KDBG_USERFLAGS  (KDBG_FREERUN | KDBG_NOWRAP | KDBG_INIT)
/* only include processes with kdebug bit set in proc */
#define KDBG_PIDCHECK   (1U << 4)
/* thread map is initialized */
#define KDBG_MAPINIT    (1U << 5)
/* exclude processes based on kdebug bit in proc */
#define KDBG_PIDEXCLUDE (1U << 6)
/* whether the kdebug locks are intialized */
#define KDBG_LOCKINIT   (1U << 7)
/* word size of the kernel */
#define KDBG_LP64       (1U << 8)

/* bits for kd_ctrl_page.flags and kbufinfo_t.flags */

/* only trace events within a range */
#define KDBG_RANGECHECK       0x00100000U
/* only trace at most 4 types of events, at the code granularity */
#define KDBG_VALCHECK         0x00200000U
/* check class and subclass against the typefilter */
#define KDBG_TYPEFILTER_CHECK 0x00400000U
/* kdebug trace buffers are initialized */
#define KDBG_BUFINIT          0x80000000U

/* bits for the type field of kd_regtype */
#define KDBG_CLASSTYPE  0x10000
#define KDBG_SUBCLSTYPE 0x20000
#define KDBG_RANGETYPE  0x40000
#define KDBG_TYPENONE   0x80000
#define KDBG_CKTYPES    0xF0000

typedef struct {
	unsigned int type;
	unsigned int value1;
	unsigned int value2;
	unsigned int value3;
	unsigned int value4;
} kd_regtype;

typedef struct {
	/* number of events that can fit in the buffers */
	int nkdbufs;
	/* set if trace is disabled */
	int nolog;
	/* kd_ctrl_page.flags */
	unsigned int flags;
	/* number of threads in thread map */
	int nkdthreads;
	/* the owning pid */
	int bufid;
} kbufinfo_t;

typedef struct {
	/* the thread ID */
	uintptr_t thread;
	/* 0 for invalid, otherwise the PID (or 1 for kernel_task) */
	int valid;
	/* the name of the process owning the thread */
	char command[20];
} kd_threadmap;

typedef struct {
	uint32_t version_no;
	uint32_t cpu_count;
} kd_cpumap_header;

/* cpumap flags */
#define KDBG_CPUMAP_IS_IOP	0x1

typedef struct {
	uint32_t cpu_id;
	uint32_t flags;
	char name[8];
} kd_cpumap;

/*
 * TRACE file formats...
 *
 * RAW_VERSION0
 *
 * uint32_t #threadmaps
 * kd_threadmap[]
 * kd_buf[]
 *
 * RAW_VERSION1
 *
 * RAW_header, with version_no set to RAW_VERSION1
 * kd_threadmap[]
 * Empty space to pad alignment to the nearest page boundary.
 * kd_buf[]
 *
 * RAW_VERSION1+
 *
 * RAW_header, with version_no set to RAW_VERSION1
 * kd_threadmap[]
 * kd_cpumap_header, with version_no set to RAW_VERSION1
 * kd_cpumap[]
 * Empty space to pad alignment to the nearest page boundary.
 * kd_buf[]
 *
 * V1+ implementation details...
 *
 * It would have been nice to add the cpumap data "correctly", but there were
 * several obstacles. Existing code attempts to parse both V1 and V0 files.
 * Due to the fact that V0 has no versioning or header, the test looks like
 * this:
 *
 * // Read header
 * if (header.version_no != RAW_VERSION1) { // Assume V0 }
 *
 * If we add a VERSION2 file format, all existing code is going to treat that
 * as a VERSION0 file when reading it, and crash terribly when trying to read
 * RAW_VERSION2 threadmap entries.
 *
 * To differentiate between a V1 and V1+ file, read as V1 until you reach
 * the padding bytes. Then:
 *
 * boolean_t is_v1plus = FALSE;
 * if (padding_bytes >= sizeof(kd_cpumap_header)) {
 *     kd_cpumap_header header = // read header;
 *     if (header.version_no == RAW_VERSION1) {
 *         is_v1plus = TRUE;
 *     }
 * }
 *
 */

typedef struct {
	int             version_no;
	int             thread_count;
	uint64_t        TOD_secs;
	uint32_t        TOD_usecs;
} RAW_header;

// Version 3 header
// The header chunk has the tag 0x00001000 which also serves as a magic word
// that identifies the file as a version 3 trace file. The header payload is
// a set of fixed fields followed by a variable number of sub-chunks:
/*
 ____________________________________________________________________________
 | Offset | Size | Field                                                    |
 ----------------------------------------------------------------------------
 |    0   |  4   | Tag (0x00001000)                                         |
 |    4   |  4   | Sub-tag. Represents the version of the header.           |
 |    8   |  8   | Length of header payload (40+8x)                         |
 |   16   |  8   | Time base info. Two 32-bit numbers, numer/denom,         |
 |        |      | for converting timestamps to nanoseconds.                |
 |   24   |  8   | Timestamp of trace start.                                |
 |   32   |  8   | Wall time seconds since Unix epoch.                      |
 |        |      | As returned by gettimeofday().                           |
 |   40   |  4   | Wall time microseconds. As returned by gettimeofday().   |
 |   44   |  4   | Local time zone offset in minutes. ( " )                 |
 |   48   |  4   | Type of daylight savings time correction to apply. ( " ) |
 |   52   |  4   | Flags. 1 = 64-bit. Remaining bits should be written      |
 |        |      | as 0 and ignored when reading.                           |
 |   56   |  8x  | Variable number of sub-chunks. None are required.        |
 |        |      | Ignore unknown chunks.                                   |
 ----------------------------------------------------------------------------
*/
// NOTE: The header sub-chunks are considered part of the header chunk,
// so they must be included in the header chunk’s length field.
// The CPU map is an optional sub-chunk of the header chunk. It provides
// information about the CPUs that are referenced from the trace events.
typedef struct {
	uint32_t tag;
	uint32_t sub_tag;
	uint64_t length;
	uint32_t timebase_numer;
	uint32_t timebase_denom;
	uint64_t timestamp;
	uint64_t walltime_secs;
	uint32_t walltime_usecs;
	uint32_t timezone_minuteswest;
	uint32_t timezone_dst;
	uint32_t flags;
} __attribute__((packed)) kd_header_v3;

typedef struct {
	uint32_t tag;
	uint32_t sub_tag;
	uint64_t length;
} __attribute__((packed)) kd_chunk_header_v3;

#define RAW_VERSION0	0x55aa0000
#define RAW_VERSION1	0x55aa0101
#define RAW_VERSION2    0x55aa0200 /* Only used by kperf and Instruments */
#define RAW_VERSION3    0x00001000

#define V3_CONFIG	0x00001b00
#define V3_CPU_MAP	0x00001c00
#define V3_THREAD_MAP	0x00001d00
#define V3_RAW_EVENTS	0x00001e00
#define V3_NULL_CHUNK	0x00002000

// The current version of all kernel managed chunks is 1. The
// V3_CURRENT_CHUNK_VERSION is added to ease the simple case
// when most/all the kernel managed chunks have the same version.

#define V3_CURRENT_CHUNK_VERSION 1
#define V3_HEADER_VERSION     V3_CURRENT_CHUNK_VERSION
#define V3_CPUMAP_VERSION     V3_CURRENT_CHUNK_VERSION
#define V3_THRMAP_VERSION     V3_CURRENT_CHUNK_VERSION
#define V3_EVENT_DATA_VERSION V3_CURRENT_CHUNK_VERSION

// Apis to support writing v3 chunks in the kernel
int kdbg_write_v3_chunk_header_to_buffer(void *buffer, uint32_t tag, uint32_t sub_tag, uint64_t length);
int kdbg_write_v3_chunk_to_fd(uint32_t tag, uint32_t sub_tag, uint64_t length, void *payload, uint64_t payload_size, int fd);

/* VFS lookup events for serial traces */
#define VFS_LOOKUP	(FSDBG_CODE(DBG_FSRW,36))
#define VFS_LOOKUP_DONE	(FSDBG_CODE(DBG_FSRW,39))

#if defined(XNU_KERNEL_PRIVATE) && (DEVELOPMENT || DEBUG)
#define KDEBUG_MOJO_TRACE 1
#endif

#endif /* __APPLE_API_PRIVATE */
#endif /* PRIVATE */

#endif /* !BSD_SYS_KDEBUG_H */