/*
 * 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@
 */

#ifndef	_KERN_DEBUG_H_
#define _KERN_DEBUG_H_

#include <kern/kcdata.h>

#include <sys/cdefs.h>
#include <stdint.h>
#include <stdarg.h>
#include <uuid/uuid.h>
#include <mach/boolean.h>
#include <mach/kern_return.h>

#ifndef XNU_KERNEL_PRIVATE
#include <TargetConditionals.h>
#endif

#ifdef __APPLE_API_PRIVATE
#ifdef __APPLE_API_UNSTABLE

struct thread_snapshot {
	uint32_t 		snapshot_magic;
	uint32_t 		nkern_frames;
	uint32_t 		nuser_frames;
	uint64_t 		wait_event;
	uint64_t 	 	continuation;
	uint64_t 		thread_id;
	uint64_t 		user_time;
	uint64_t 		system_time;
	int32_t  		state;
	int32_t			priority;    /*	static priority */
	int32_t			sched_pri;   /* scheduled (current) priority */
	int32_t			sched_flags; /* scheduler flags */
	char			ss_flags;
	char			ts_qos;      /* effective qos */
	char			ts_rqos;     /* requested qos */
	char			ts_rqos_override; /* requested qos override */
	char			io_tier;
	char			_reserved[3]; /* pad for 4 byte alignement packing */

	/*
	 * I/O Statistics
	 * XXX: These fields must be together
	 */
	uint64_t 		disk_reads_count;
	uint64_t 		disk_reads_size;
	uint64_t 		disk_writes_count;
	uint64_t 		disk_writes_size;
	uint64_t 		io_priority_count[STACKSHOT_IO_NUM_PRIORITIES];
	uint64_t 		io_priority_size[STACKSHOT_IO_NUM_PRIORITIES];
	uint64_t 		paging_count;
	uint64_t 		paging_size;
	uint64_t 		non_paging_count;
	uint64_t 		non_paging_size;
	uint64_t 		data_count;
	uint64_t 		data_size;
	uint64_t 		metadata_count;
	uint64_t 		metadata_size;
	/* XXX: I/O Statistics end */

	uint64_t		voucher_identifier; /* obfuscated voucher identifier */
	uint64_t		total_syscalls;
	char			pth_name[STACKSHOT_MAX_THREAD_NAME_SIZE];

} __attribute__((packed));

/* old, non kcdata format */
struct task_snapshot {
	uint32_t snapshot_magic;
	int32_t pid;
	uint64_t		uniqueid;
	uint64_t		user_time_in_terminated_threads;
	uint64_t		system_time_in_terminated_threads;
	uint8_t			shared_cache_identifier[16];
	uint64_t		shared_cache_slide;
	uint32_t		nloadinfos;
	int			suspend_count; 
	int			task_size;	/* pages */
	int			faults;		/* number of page faults */
	int			pageins;	/* number of actual pageins */
	int			cow_faults;	/* number of copy-on-write faults */
	uint32_t		ss_flags;
	uint64_t		p_start_sec;	/* from the bsd proc struct */
	uint64_t		p_start_usec;	/* from the bsd proc struct */

	/* 
	 * We restrict ourselves to a statically defined
	 * (current as of 2009) length for the
	 * p_comm string, due to scoping issues (osfmk/bsd and user/kernel
	 * binary compatibility).
	 */
	char			p_comm[17];
	uint32_t 		was_throttled;
	uint32_t 		did_throttle;
	uint32_t		latency_qos;
	/*
	 * I/O Statistics
	 * XXX: These fields must be together.
	 */
	uint64_t 		disk_reads_count;
	uint64_t 		disk_reads_size;
	uint64_t 		disk_writes_count;
	uint64_t 		disk_writes_size;
	uint64_t 		io_priority_count[STACKSHOT_IO_NUM_PRIORITIES];
	uint64_t 		io_priority_size[STACKSHOT_IO_NUM_PRIORITIES];
	uint64_t 		paging_count;
	uint64_t 		paging_size;
	uint64_t 		non_paging_count;
	uint64_t 		non_paging_size;
	uint64_t 		data_count;
	uint64_t 		data_size;
	uint64_t 		metadata_count;
	uint64_t 		metadata_size;
	/* XXX: I/O Statistics end */

	uint32_t		donating_pid_count;

} __attribute__ ((packed));



struct micro_snapshot {
	uint32_t		snapshot_magic;
	uint32_t		ms_cpu;	 /* cpu number this snapshot was recorded on */
	uint64_t		ms_time; /* time at sample (seconds) */
	uint64_t		ms_time_microsecs;
	uint8_t			ms_flags;
	uint16_t		ms_opaque_flags;	/* managed by external entity, e.g. fdrmicrod */
} __attribute__ ((packed));



struct _dyld_cache_header
{
    char    	magic[16];				// e.g. "dyld_v0    i386"
    uint32_t	mappingOffset;          // file offset to first dyld_cache_mapping_info
    uint32_t    mappingCount;           // number of dyld_cache_mapping_info entries
    uint32_t    imagesOffset;           // file offset to first dyld_cache_image_info
    uint32_t    imagesCount;            // number of dyld_cache_image_info entries
    uint64_t    dyldBaseAddress;        // base address of dyld when cache was built
    uint64_t    codeSignatureOffset;    // file offset of code signature blob
    uint64_t    codeSignatureSize;     	// size of code signature blob (zero means to end of file)
    uint64_t    slideInfoOffset;        // file offset of kernel slid info
    uint64_t    slideInfoSize;          // size of kernel slid info
    uint64_t    localSymbolsOffset;     // file offset of where local symbols are stored
    uint64_t    localSymbolsSize;       // size of local symbols information
    uint8_t     uuid[16];               // unique value for each shared cache file
};


enum micro_snapshot_flags {
	kInterruptRecord	= 0x1,
	kTimerArmingRecord	= 0x2,
	kUserMode 		= 0x4, /* interrupted usermode, or armed by usermode */
	kIORecord 		= 0x8,
};

/*
 * Flags used in the following assortment of snapshots.
 */
enum generic_snapshot_flags {
	kUser64_p 			= 0x1,
	kKernel64_p 		= 0x2
};

#define VM_PRESSURE_TIME_WINDOW 5 /* seconds */

enum {
	STACKSHOT_GET_DQ                           = 0x01,
	STACKSHOT_SAVE_LOADINFO                    = 0x02,
	STACKSHOT_GET_GLOBAL_MEM_STATS             = 0x04,
	STACKSHOT_SAVE_KEXT_LOADINFO               = 0x08,
	STACKSHOT_GET_MICROSTACKSHOT               = 0x10,
	STACKSHOT_GLOBAL_MICROSTACKSHOT_ENABLE     = 0x20,
	STACKSHOT_GLOBAL_MICROSTACKSHOT_DISABLE    = 0x40,
	STACKSHOT_SET_MICROSTACKSHOT_MARK          = 0x80,
	STACKSHOT_ACTIVE_KERNEL_THREADS_ONLY       = 0x100,
	STACKSHOT_GET_BOOT_PROFILE                 = 0x200,
	STACKSHOT_SAVE_IMP_DONATION_PIDS           = 0x2000,
	STACKSHOT_SAVE_IN_KERNEL_BUFFER            = 0x4000,
	STACKSHOT_RETRIEVE_EXISTING_BUFFER         = 0x8000,
	STACKSHOT_KCDATA_FORMAT                    = 0x10000,
	STACKSHOT_ENABLE_BT_FAULTING               = 0x20000,
	STACKSHOT_COLLECT_DELTA_SNAPSHOT           = 0x40000,
	/*
	 * STACKSHOT_TAILSPIN flips on several features aimed at minimizing the size
	 * of stackshots.  It is meant to be used only by the tailspin daemon.  Its
	 * behavior may be changed at any time to suit the needs of the tailspin
	 * daemon.  Seriously, if you are not the tailspin daemon, don't use this
	 * flag.  If you need these features, ask us to add a stable SPI for what
	 * you need.   That being said, the features it turns on are:
	 *
	 * minimize_uuids: If the set of loaded dylibs or kexts has not changed in
	 * the delta period, do then not report them.
	 *
	 * iostats: do not include io statistics.
	 *
	 * trace_fp: do not include the frame pointers in stack traces.
	 *
	 * minimize_nonrunnables: Do not report detailed information about threads
	 * which were not runnable in the delta period.
	 */
	STACKSHOT_TAILSPIN                         = 0x80000,
	/*
	 * Kernel consumers of stackshot (via stack_snapshot_from_kernel) can ask
	 * that we try to take the stackshot lock, and fail if we don't get it.
	 */
	STACKSHOT_TRYLOCK                          = 0x100000,
	STACKSHOT_ENABLE_UUID_FAULTING             = 0x200000,
	STACKSHOT_FROM_PANIC                       = 0x400000,
	STACKSHOT_NO_IO_STATS                      = 0x800000,
	/* Report owners of and pointers to kernel objects that threads are blocked on */
	STACKSHOT_THREAD_WAITINFO                  = 0x1000000,
	STACKSHOT_THREAD_GROUP                     = 0x2000000,
	STACKSHOT_SAVE_JETSAM_COALITIONS           = 0x4000000,
	STACKSHOT_INSTRS_CYCLES                    = 0x8000000,
};

#define STACKSHOT_THREAD_SNAPSHOT_MAGIC     0xfeedface
#define STACKSHOT_TASK_SNAPSHOT_MAGIC       0xdecafbad
#define STACKSHOT_MEM_AND_IO_SNAPSHOT_MAGIC 0xbfcabcde
#define STACKSHOT_MICRO_SNAPSHOT_MAGIC      0x31c54011

#define KF_INITIALIZED (0x1)
#define KF_SERIAL_OVRD (0x2)
#define KF_PMAPV_OVRD (0x4)
#define KF_MATV_OVRD (0x8)
#define KF_STACKSHOT_OVRD (0x10)
#define KF_COMPRSV_OVRD (0x20)

boolean_t kern_feature_override(uint32_t fmask);

/*
 * Any updates to this header should be also updated in astris as it can not
 * grab this header from the SDK.
 *
 * NOTE: DO NOT REMOVE OR CHANGE THE MEANING OF ANY FIELDS FROM THIS STRUCTURE.
 *       Any modifications should add new fields at the end, bump the version number
 *       and be done alongside astris and DumpPanic changes.
 */
struct embedded_panic_header {
	uint32_t eph_magic;                /* EMBEDDED_PANIC_MAGIC if valid */
	uint32_t eph_crc;                  /* CRC of everything following the ph_crc in the header and the contents */
	uint32_t eph_version;              /* embedded_panic_header version */
	uint64_t eph_panic_flags;          /* Flags indicating any state or relevant details */
	uint32_t eph_panic_log_offset;     /* Offset of the beginning of the panic log from the beginning of the header */
	uint32_t eph_panic_log_len;        /* length of the panic log */
	uint32_t eph_stackshot_offset;     /* Offset of the beginning of the panic stackshot from the beginning of the header */
	uint32_t eph_stackshot_len;        /* length of the panic stackshot (0 if not valid ) */
	uint32_t eph_other_log_offset;     /* Offset of the other log (any logging subsequent to the stackshot) from the beginning of the header */
	uint32_t eph_other_log_len;        /* length of the other log */
	uint64_t eph_x86_power_state:8,
		 eph_x86_efi_boot_state:8,
		 eph_x86_system_state:8,
		 eph_x86_unused_bits:40;
} __attribute__((packed));

#define EMBEDDED_PANIC_HEADER_FLAG_COREDUMP_COMPLETE             0x01
#define EMBEDDED_PANIC_HEADER_FLAG_STACKSHOT_SUCCEEDED           0x02
#define EMBEDDED_PANIC_HEADER_FLAG_STACKSHOT_FAILED_DEBUGGERSYNC 0x04
#define EMBEDDED_PANIC_HEADER_FLAG_STACKSHOT_FAILED_ERROR        0x08
#define EMBEDDED_PANIC_HEADER_FLAG_STACKSHOT_FAILED_INCOMPLETE   0x10
#define EMBEDDED_PANIC_HEADER_FLAG_STACKSHOT_FAILED_NESTED       0x20
#define EMBEDDED_PANIC_HEADER_FLAG_NESTED_PANIC                  0x40
#define EMBEDDED_PANIC_HEADER_FLAG_BUTTON_RESET_PANIC            0x80
#define EMBEDDED_PANIC_HEADER_FLAG_COPROC_INITIATED_PANIC        0x100
#define EMBEDDED_PANIC_HEADER_FLAG_COREDUMP_FAILED               0x200

#define EMBEDDED_PANIC_HEADER_CURRENT_VERSION 2
#define EMBEDDED_PANIC_MAGIC 0x46554E4B /* FUNK */

struct macos_panic_header {
	uint32_t mph_magic;                   /* MACOS_PANIC_MAGIC if valid */
	uint32_t mph_crc;                     /* CRC of everything following mph_crc in the header and the contents */
	uint32_t mph_version;                 /* macos_panic_header version */
	uint32_t mph_padding;                 /* unused */
	uint64_t mph_panic_flags;             /* Flags indicating any state or relevant details */
	uint32_t mph_panic_log_offset;        /* Offset of the panic log from the beginning of the header */
	uint32_t mph_panic_log_len;           /* length of the panic log */
	uint32_t mph_stackshot_offset;  /* Offset of the panic stackshot from the beginning of the header */
	uint32_t mph_stackshot_len;     /* length of the panic stackshot */
	uint32_t mph_other_log_offset;        /* Offset of the other log (any logging subsequent to the stackshot) from the beginning of the header */
	uint32_t mph_other_log_len;           /* length of the other log */
	char     mph_data[];                  /* panic data -- DO NOT ACCESS THIS FIELD DIRECTLY. Use the offsets above relative to the beginning of the header */
} __attribute__((packed));

#define MACOS_PANIC_HEADER_CURRENT_VERSION 2
#define MACOS_PANIC_MAGIC 0x44454544 /* DEED */

#define MACOS_PANIC_HEADER_FLAG_NESTED_PANIC                  0x01
#define MACOS_PANIC_HEADER_FLAG_COPROC_INITIATED_PANIC        0x02
#define MACOS_PANIC_HEADER_FLAG_STACKSHOT_SUCCEEDED           0x04
#define MACOS_PANIC_HEADER_FLAG_STACKSHOT_DATA_COMPRESSED     0x08
#define MACOS_PANIC_HEADER_FLAG_STACKSHOT_FAILED_DEBUGGERSYNC 0x10
#define MACOS_PANIC_HEADER_FLAG_STACKSHOT_FAILED_ERROR        0x20
#define MACOS_PANIC_HEADER_FLAG_STACKSHOT_FAILED_INCOMPLETE   0x40
#define MACOS_PANIC_HEADER_FLAG_STACKSHOT_FAILED_NESTED       0x80
#define MACOS_PANIC_HEADER_FLAG_COREDUMP_COMPLETE             0x100
#define MACOS_PANIC_HEADER_FLAG_COREDUMP_FAILED               0x200

#endif /* __APPLE_API_UNSTABLE */
#endif /* __APPLE_API_PRIVATE */

#ifdef KERNEL

__BEGIN_DECLS

extern void panic(const char *string, ...) __printflike(1,2);

__END_DECLS

#endif /* KERNEL */

#ifdef KERNEL_PRIVATE
#if DEBUG
#ifndef DKPR
#define DKPR 1
#endif
#endif

#if DKPR
/*
 * For the DEBUG kernel, support the following:
 *	sysctl -w debug.kprint_syscall=<syscall_mask> 
 *	sysctl -w debug.kprint_syscall_process=<p_comm>
 * <syscall_mask> should be an OR of the masks below
 * for UNIX, MACH, MDEP, or IPC. This debugging aid
 * assumes the task/process is locked/wired and will
 * not go away during evaluation. If no process is
 * specified, all processes will be traced
 */
extern int debug_kprint_syscall;
extern int debug_kprint_current_process(const char **namep);
#define DEBUG_KPRINT_SYSCALL_PREDICATE_INTERNAL(mask, namep)			\
	( (debug_kprint_syscall & (mask)) && debug_kprint_current_process(namep) )
#define DEBUG_KPRINT_SYSCALL_MASK(mask, fmt, args...)	do { 			\
		const char *dks_name = NULL;									\
		if (DEBUG_KPRINT_SYSCALL_PREDICATE_INTERNAL(mask, &dks_name)) {	\
			kprintf("[%s%s%p]" fmt, dks_name ? dks_name : "",			\
					dks_name ? "@" : "", current_thread(), args);			\
		}																\
	} while (0)
#else /* !DEBUG */
#define DEBUG_KPRINT_SYSCALL_PREDICATE_INTERNAL(mask, namep) (0)
#define DEBUG_KPRINT_SYSCALL_MASK(mask, fmt, args...) do { } while (0) /* kprintf(fmt, args) */
#endif /* !DEBUG */

enum {
	DEBUG_KPRINT_SYSCALL_UNIX_MASK = 1 << 0,
	DEBUG_KPRINT_SYSCALL_MACH_MASK = 1 << 1,
	DEBUG_KPRINT_SYSCALL_MDEP_MASK = 1 << 2,
	DEBUG_KPRINT_SYSCALL_IPC_MASK  = 1 << 3
};

#define DEBUG_KPRINT_SYSCALL_PREDICATE(mask)				\
	DEBUG_KPRINT_SYSCALL_PREDICATE_INTERNAL(mask, NULL)
#define DEBUG_KPRINT_SYSCALL_UNIX(fmt, args...)				\
	DEBUG_KPRINT_SYSCALL_MASK(DEBUG_KPRINT_SYSCALL_UNIX_MASK,fmt,args)
#define DEBUG_KPRINT_SYSCALL_MACH(fmt, args...)				\
	DEBUG_KPRINT_SYSCALL_MASK(DEBUG_KPRINT_SYSCALL_MACH_MASK,fmt,args)
#define DEBUG_KPRINT_SYSCALL_MDEP(fmt, args...)				\
	DEBUG_KPRINT_SYSCALL_MASK(DEBUG_KPRINT_SYSCALL_MDEP_MASK,fmt,args)
#define DEBUG_KPRINT_SYSCALL_IPC(fmt, args...)				\
	DEBUG_KPRINT_SYSCALL_MASK(DEBUG_KPRINT_SYSCALL_IPC_MASK,fmt,args)

/* Debug boot-args */
#define DB_HALT		0x1
//#define DB_PRT          0x2 -- obsolete
#define DB_NMI		0x4
#define DB_KPRT		0x8
#define DB_KDB		0x10
#define DB_ARP          0x40
#define DB_KDP_BP_DIS   0x80
//#define DB_LOG_PI_SCRN  0x100 -- obsolete
#define DB_KDP_GETC_ENA 0x200

#define DB_KERN_DUMP_ON_PANIC		0x400 /* Trigger core dump on panic*/
#define DB_KERN_DUMP_ON_NMI		0x800 /* Trigger core dump on NMI */
#define DB_DBG_POST_CORE		0x1000 /*Wait in debugger after NMI core */
#define DB_PANICLOG_DUMP		0x2000 /* Send paniclog on panic,not core*/
#define DB_REBOOT_POST_CORE		0x4000 /* Attempt to reboot after
						* post-panic crashdump/paniclog
						* dump.
						*/
#define DB_NMI_BTN_ENA  	0x8000  /* Enable button to directly trigger NMI */
#define DB_PRT_KDEBUG   	0x10000 /* kprintf KDEBUG traces */
#define DB_DISABLE_LOCAL_CORE   0x20000 /* ignore local kernel core dump support */
#define DB_DISABLE_GZIP_CORE    0x40000 /* don't gzip kernel core dumps */
#define DB_DISABLE_CROSS_PANIC  0x80000 /* x86 only - don't trigger cross panics. Only
                                         * necessary to enable x86 kernel debugging on
                                         * configs with a dev-fused co-processor running
                                         * release bridgeOS.
                                         */
#define DB_REBOOT_ALWAYS        0x100000 /* Don't wait for debugger connection */

/*
 * Values for a 64-bit mask that's passed to the debugger.
 */
#define DEBUGGER_OPTION_NONE			0x0ULL
#define DEBUGGER_OPTION_PANICLOGANDREBOOT	0x1ULL /* capture a panic log and then reboot immediately */
#define DEBUGGER_OPTION_RECURPANIC_ENTRY        0x2ULL
#define DEBUGGER_OPTION_RECURPANIC_PRELOG       0x4ULL
#define DEBUGGER_OPTION_RECURPANIC_POSTLOG      0x8ULL
#define DEBUGGER_OPTION_RECURPANIC_POSTCORE     0x10ULL
#define DEBUGGER_OPTION_INITPROC_PANIC          0x20ULL
#define DEBUGGER_OPTION_COPROC_INITIATED_PANIC  0x40ULL /* panic initiated by a co-processor */
#define DEBUGGER_OPTION_SKIP_LOCAL_COREDUMP     0x80ULL /* don't try to save local coredumps for this panic */

__BEGIN_DECLS

#define panic_plain(ex, ...)  (panic)(ex, ## __VA_ARGS__)

#define __STRINGIFY(x) #x
#define LINE_NUMBER(x) __STRINGIFY(x)
#define PANIC_LOCATION __FILE__ ":" LINE_NUMBER(__LINE__)

#if CONFIG_EMBEDDED
#define panic(ex, ...) (panic)(# ex, ## __VA_ARGS__)
#else
#define panic(ex, ...) (panic)(# ex "@" PANIC_LOCATION, ## __VA_ARGS__)
#endif

void panic_context(unsigned int reason, void *ctx, const char *string, ...);
void panic_with_options(unsigned int reason, void *ctx, uint64_t debugger_options_mask, const char *str, ...);
void Debugger(const char * message);
void populate_model_name(char *);

unsigned panic_active(void);

__END_DECLS

#endif	/* KERNEL_PRIVATE */

#if XNU_KERNEL_PRIVATE

boolean_t oslog_is_safe(void);
boolean_t debug_mode_active(void);
boolean_t stackshot_active(void);
void panic_stackshot_reset_state(void);

/*
 * @function stack_snapshot_from_kernel
 *
 * @abstract Stackshot function for kernel consumers who have their own buffer.
 *
 * @param pid     the PID to be traced or -1 for the whole system
 * @param buf     a pointer to the buffer where the stackshot should be written
 * @param size    the size of the buffer
 * @param flags   flags to be passed to the stackshot
 * @param delta_since_timestamp start time for delta period
 * @bytes_traced  a pointer to be filled with the length of the stackshot
 *
 */
#ifdef __cplusplus
extern "C" {
#endif
kern_return_t
stack_snapshot_from_kernel(int pid, void *buf, uint32_t size, uint32_t flags,
						   uint64_t delta_since_timestamp, unsigned *bytes_traced);
#ifdef __cplusplus
}
#endif

#if !CONFIG_EMBEDDED
extern char debug_buf[];
extern boolean_t coprocessor_paniclog_flush;
extern boolean_t extended_debug_log_enabled;;
#endif /* !CONFIG_EMBEDDED */

extern char	*debug_buf_base;

extern char	kernel_uuid_string[];
extern char   	panic_disk_error_description[];
extern size_t	panic_disk_error_description_size;

extern unsigned char	*kernel_uuid;
extern unsigned int	debug_boot_arg;
#if DEVELOPMENT || DEBUG
extern boolean_t	debug_boot_arg_inited;
#endif

#ifdef __cplusplus
extern "C" {
#endif

extern boolean_t	doprnt_hide_pointers;

#ifdef __cplusplus
}
#endif

extern unsigned int	halt_in_debugger; /* pending halt in debugger after boot */
extern unsigned int     current_debugger;
#define NO_CUR_DB       0x0
#define KDP_CUR_DB      0x1

extern unsigned int 	active_debugger;
extern unsigned int 	kernel_debugger_entry_count;

extern unsigned int 	panicDebugging;
extern unsigned int	kdebug_serial;

extern const char	*debugger_panic_str;

extern char *debug_buf_ptr;
extern unsigned int debug_buf_size;

extern void	debug_log_init(void);
extern void	debug_putc(char);

extern void	panic_init(void);

#if defined (__x86_64__)
extern void extended_debug_log_init(void);

int	packA(char *inbuf, uint32_t length, uint32_t buflen);
void	unpackA(char *inbuf, uint32_t length);

#if DEVELOPMENT || DEBUG
#define PANIC_STACKSHOT_BUFSIZE (1024 * 1024)

extern uintptr_t panic_stackshot_buf;
extern size_t panic_stackshot_len;
#endif /* DEVELOPMENT || DEBUG */
#endif /* defined (__x86_64__) */

void 	SavePanicInfo(const char *message, uint64_t panic_options);
void    paniclog_flush(void);
void	panic_display_system_configuration(boolean_t launchd_exit);
void	panic_display_zprint(void);
void	panic_display_kernel_aslr(void);
void	panic_display_hibb(void);
void	panic_display_model_name(void);
void	panic_display_kernel_uuid(void);
#if CONFIG_ZLEAKS
void	panic_display_ztrace(void);
#endif /* CONFIG_ZLEAKS */
#if CONFIG_ECC_LOGGING
void 	panic_display_ecc_errors(void);
#endif /* CONFIG_ECC_LOGGING */

/*
 * @var not_in_kdp
 *
 * @abstract True if we're in normal kernel operation, False if we're in a
 * single-core debugger context.
 */
extern unsigned int not_in_kdp;

#define DEBUGGER_NO_CPU -1

typedef enum {
	DBOP_NONE,
	DBOP_STACKSHOT,
	DBOP_RESET_PGO_COUNTERS,
	DBOP_PANIC,
	DBOP_DEBUGGER,
	DBOP_BREAKPOINT,
} debugger_op;

kern_return_t DebuggerTrapWithState(debugger_op db_op, const char *db_message, const char *db_panic_str, va_list *db_panic_args,
		uint64_t db_panic_options, boolean_t db_proceed_on_sync_failure, unsigned long db_panic_caller);
void handle_debugger_trap(unsigned int exception, unsigned int code, unsigned int subcode, void *state);

void DebuggerWithContext(unsigned int reason, void *ctx, const char *message, uint64_t debugger_options_mask);

#if DEBUG || DEVELOPMENT
/* leak pointer scan definitions */

enum
{
    kInstanceFlagAddress    = 0x01UL,
    kInstanceFlagReferenced = 0x02UL,
    kInstanceFlags          = 0x03UL
};

#define INSTANCE_GET(x) ((x) & ~kInstanceFlags)
#define INSTANCE_PUT(x) ((x) ^ ~kInstanceFlags)

typedef void (*leak_site_proc)(void * refCon, uint32_t siteCount, uint32_t zoneSize,
                               uintptr_t * backtrace, uint32_t btCount);

#ifdef __cplusplus
extern "C" {
#endif

extern kern_return_t
zone_leaks(const char * zoneName, uint32_t nameLen, leak_site_proc proc, void * refCon);

extern void
zone_leaks_scan(uintptr_t * instances, uint32_t count, uint32_t zoneSize, uint32_t * found);

#ifdef __cplusplus
}
#endif

extern boolean_t
kdp_is_in_zone(void *addr, const char *zone_name);

#endif  /* DEBUG || DEVELOPMENT */
#endif  /* XNU_KERNEL_PRIVATE */

#endif	/* _KERN_DEBUG_H_ */