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📄 _atomic64e.h(2.91 KB)
📄 _atomic_subword.h(7.27 KB)
📄 _bitset.h(2.3 KB)
📄 _blockcount.h(1.97 KB)
📄 _bus_dma.h(2.15 KB)
📄 _callout.h(2.68 KB)
📄 _cpuset.h(1.76 KB)
📄 _cscan_atomic.h(18.1 KB)
📄 _cscan_bus.h(10.22 KB)
📄 _domainset.h(2.04 KB)
📄 _eventhandler.h(2.81 KB)
📄 _ffcounter.h(1.84 KB)
📄 _iovec.h(1.93 KB)
📄 _lock.h(2.98 KB)
📄 _lockmgr.h(1.82 KB)
📄 _mutex.h(2.63 KB)
📄 _null.h(1.7 KB)
📄 _pctrie.h(1.65 KB)
📄 _pthreadtypes.h(3.51 KB)
📄 _rangeset.h(1.86 KB)
📄 _rmlock.h(2.59 KB)
📄 _rwlock.h(2.39 KB)
📄 _semaphore.h(2.05 KB)
📄 _seqc.h(160 B)
📄 _sigset.h(2.46 KB)
📄 _smr.h(1.94 KB)
📄 _sockaddr_storage.h(2.37 KB)
📄 _stack.h(1.53 KB)
📄 _stdarg.h(2.15 KB)
📄 _stdint.h(2.6 KB)
📄 _sx.h(1.73 KB)
📄 _task.h(2.62 KB)
📄 _termios.h(7.64 KB)
📄 _timespec.h(2 KB)
📄 _timeval.h(1.88 KB)
📄 _types.h(5.66 KB)
📄 _ucontext.h(2.08 KB)
📄 _uio.h(1.99 KB)
📄 _umtx.h(2.5 KB)
📄 _unrhdr.h(1.92 KB)
📄 _winsize.h(2.14 KB)
📄 aac_ioctl.h(7.56 KB)
📄 abi_compat.h(2.42 KB)
📄 acct.h(4.95 KB)
📄 acl.h(14.62 KB)
📄 agpio.h(5.78 KB)
📄 aio.h(7.69 KB)
📄 alq.h(4.5 KB)
📄 apm.h(88 B)
📄 arb.h(28.88 KB)
📄 assym.h(2.7 KB)
📄 ata.h(45.35 KB)
📄 atomic_common.h(3.26 KB)
📄 auxv.h(1.58 KB)
📄 backlight.h(2.02 KB)
📄 bio.h(6.77 KB)
📄 bitset.h(8.53 KB)
📄 bitstring.h(12.16 KB)
📄 blist.h(3.74 KB)
📄 blockcount.h(3.03 KB)
📄 boot.h(1.8 KB)
📄 buf.h(20.73 KB)
📄 buf_ring.h(10.6 KB)
📄 bufobj.h(5.03 KB)
📄 bus.h(38.2 KB)
📄 bus_dma.h(13.68 KB)
📄 bus_dma_internal.h(2.42 KB)
📄 busdma_bufalloc.h(4.7 KB)
📄 callout.h(6.62 KB)
📄 caprights.h(4.17 KB)
📄 capsicum.h(17.54 KB)
📄 cdefs.h(27.79 KB)
📄 cdio.h(7.09 KB)
📄 cdrio.h(4.88 KB)
📄 cfictl.h(2.21 KB)
📄 chio.h(9.53 KB)
📄 ck.h(251 B)
📄 clock.h(8.07 KB)
📄 cnv.h(4.25 KB)
📄 compressor.h(2.05 KB)
📄 condvar.h(3.42 KB)
📄 conf.h(12.4 KB)
📄 cons.h(5.22 KB)
📄 consio.h(14.01 KB)
📄 copyright.h(1.97 KB)
📄 counter.h(3.02 KB)
📄 coverage.h(2.36 KB)
📄 cpu.h(7.02 KB)
📄 cpuctl.h(2.29 KB)
📄 cpuset.h(5.93 KB)
📄 csan.h(1.71 KB)
📄 ctf.h(14.4 KB)
📄 ctf_api.h(9.43 KB)
📄 ctype.h(2.81 KB)
📄 devctl.h(1.76 KB)
📄 devicestat.h(6.97 KB)
📄 devmap.h(4.04 KB)
📄 dirent.h(4.78 KB)
📁 disk
📄 disk.h(6.31 KB)
📄 disk_zone.h(6.52 KB)
📄 disklabel.h(4.39 KB)
📄 diskmbr.h(1.84 KB)
📄 dkstat.h(2.05 KB)
📄 dnv.h(3.39 KB)
📄 domain.h(3.64 KB)
📄 domainset.h(5.05 KB)
📄 dtrace.h(104.98 KB)
📄 dtrace_bsd.h(6.93 KB)
📄 dvdio.h(3.43 KB)
📄 efi.h(6.21 KB)
📄 efiio.h(2.06 KB)
📄 elf.h(1.6 KB)
📄 elf32.h(7.46 KB)
📄 elf64.h(7.79 KB)
📄 elf_common.h(59.51 KB)
📄 elf_generic.h(2.83 KB)
📄 endian.h(4.98 KB)
📄 epoch.h(4.01 KB)
📄 errno.h(8.29 KB)
📄 eui64.h(2.05 KB)
📄 event.h(12.61 KB)
📄 eventfd.h(1.86 KB)
📄 eventhandler.h(11.8 KB)
📄 eventvar.h(2.46 KB)
📄 exec.h(4.56 KB)
📄 extattr.h(4.08 KB)
📄 fail.h(13.1 KB)
📄 fbio.h(19.95 KB)
📄 fcntl.h(12.02 KB)
📄 fdcio.h(7.6 KB)
📄 file.h(14.06 KB)
📄 filedesc.h(12.13 KB)
📄 filio.h(3.67 KB)
📄 firmware.h(3.11 KB)
📄 fnv_hash.h(1.41 KB)
📄 font.h(3.85 KB)
📄 gmon.h(7.16 KB)
📄 gpio.h(9.85 KB)
📄 gpt.h(1.51 KB)
📄 gsb_crc32.h(998 B)
📄 gtaskqueue.h(4.21 KB)
📄 hash.h(3.55 KB)
📄 hhook.h(5.86 KB)
📄 iconv.h(8.22 KB)
📄 imgact.h(5.22 KB)
📄 imgact_aout.h(5.65 KB)
📄 imgact_binmisc.h(6.95 KB)
📄 imgact_elf.h(4.13 KB)
📄 interrupt.h(8.07 KB)
📄 intr.h(5.36 KB)
📄 ioccom.h(3.82 KB)
📄 ioctl.h(2.24 KB)
📄 ioctl_compat.h(6.42 KB)
📄 iov.h(11.67 KB)
📄 iov_schema.h(2.33 KB)
📄 ipc.h(4.93 KB)
📄 ipmi.h(5.4 KB)
📄 jail.h(14.98 KB)
📄 joystick.h(2.12 KB)
📄 kbio.h(7.81 KB)
📄 kcov.h(2.36 KB)
📄 kdb.h(5.04 KB)
📄 kenv.h(2.02 KB)
📄 kern_prefetch.h(1.67 KB)
📄 kernel.h(16.18 KB)
📄 kerneldump.h(4.85 KB)
📄 khelp.h(3.08 KB)
📄 kobj.h(6.92 KB)
📄 kpilite.h(2.01 KB)
📄 ksem.h(2.34 KB)
📄 kthread.h(3.04 KB)
📄 ktls.h(6.52 KB)
📄 ktr.h(10.92 KB)
📄 ktr_class.h(3.8 KB)
📄 ktrace.h(8.13 KB)
📄 libkern.h(7.74 KB)
📄 limits.h(3.69 KB)
📄 link_aout.h(10.2 KB)
📄 link_elf.h(4.06 KB)
📄 linker.h(11.88 KB)
📄 linker_set.h(3.85 KB)
📄 lock.h(12.24 KB)
📄 lock_profile.h(2.6 KB)
📄 lockf.h(5.55 KB)
📄 lockmgr.h(7 KB)
📄 lockstat.h(5.13 KB)
📄 loginclass.h(2.08 KB)
📄 mac.h(3.96 KB)
📄 malloc.h(11.76 KB)
📄 mbuf.h(50.74 KB)
📄 mchain.h(4.21 KB)
📄 md4.h(1.63 KB)
📄 md5.h(1.81 KB)
📄 mdioctl.h(3.73 KB)
📄 memdesc.h(3.79 KB)
📄 memrange.h(2.36 KB)
📄 mman.h(10.41 KB)
📄 module.h(8.77 KB)
📄 module_khelp.h(3.45 KB)
📄 mount.h(42.05 KB)
📄 mouse.h(12.69 KB)
📄 mpt_ioctl.h(4.27 KB)
📄 mqueue.h(1.86 KB)
📄 msg.h(4.78 KB)
📄 msgbuf.h(3.49 KB)
📄 mtio.h(11.94 KB)
📄 mutex.h(19.18 KB)
📄 namei.h(11.27 KB)
📄 nlist_aout.h(4.23 KB)
📄 nv.h(10.62 KB)
📄 nvpair.h(14.77 KB)
📄 osd.h(4.02 KB)
📄 param.h(12.23 KB)
📄 pciio.h(5.67 KB)
📄 pcpu.h(9.79 KB)
📄 pctrie.h(5.19 KB)
📄 physmem.h(2.92 KB)
📄 pidctrl.h(5.44 KB)
📄 pipe.h(4.63 KB)
📄 pmc.h(37.29 KB)
📄 pmckern.h(8.01 KB)
📄 pmclog.h(9.23 KB)
📄 poll.h(4.03 KB)
📄 posix4.h(3.71 KB)
📄 power.h(2.34 KB)
📄 priority.h(4.39 KB)
📄 priv.h(19.73 KB)
📄 prng.h(354 B)
📄 proc.h(50.73 KB)
📄 procctl.h(4.89 KB)
📄 procdesc.h(4.46 KB)
📄 procfs.h(4.2 KB)
📄 protosw.h(14.56 KB)
📄 ptio.h(1.57 KB)
📄 ptrace.h(8.61 KB)
📄 qmath.h(22.07 KB)
📄 queue.h(28.61 KB)
📄 racct.h(7.48 KB)
📄 random.h(5.41 KB)
📄 rangelock.h(3.86 KB)
📄 rangeset.h(2.96 KB)
📄 rctl.h(5.91 KB)
📄 reboot.h(3.41 KB)
📄 refcount.h(5.72 KB)
📄 regression.h(1.62 KB)
📄 resource.h(5.32 KB)
📄 resourcevar.h(6.33 KB)
📄 rman.h(6.41 KB)
📄 rmlock.h(5.56 KB)
📄 rtprio.h(3.08 KB)
📄 runq.h(2.54 KB)
📄 rwlock.h(10.61 KB)
📄 sbuf.h(4.68 KB)
📄 sched.h(9.06 KB)
📄 sdt.h(17.89 KB)
📄 select.h(3.5 KB)
📄 selinfo.h(2.39 KB)
📄 sem.h(4.31 KB)
📄 sema.h(2.61 KB)
📄 seqc.h(3.26 KB)
📄 serial.h(3.49 KB)
📄 sf_buf.h(5.87 KB)
📄 sglist.h(3.89 KB)
📄 shm.h(5.69 KB)
📄 sigio.h(2.83 KB)
📄 signal.h(15.83 KB)
📄 signalvar.h(12.95 KB)
📄 sleepqueue.h(5.61 KB)
📄 slicer.h(2.19 KB)
📄 smp.h(8.88 KB)
📄 smr.h(7.64 KB)
📄 smr_types.h(4.87 KB)
📄 snoop.h(1014 B)
📄 sockbuf.h(9.9 KB)
📄 socket.h(23.43 KB)
📄 socketvar.h(18.75 KB)
📄 sockio.h(7.97 KB)
📄 sockopt.h(2.98 KB)
📄 soundcard.h(69.38 KB)
📄 specialfd.h(1.56 KB)
📄 spigenio.h(2.28 KB)
📄 stack.h(2.65 KB)
📄 stat.h(13.44 KB)
📄 stats.h(34.73 KB)
📄 statvfs.h(3.08 KB)
📄 stdatomic.h(13.94 KB)
📄 stddef.h(1.7 KB)
📄 stdint.h(2.63 KB)
📄 sx.h(11.04 KB)
📄 syscall.h(13.99 KB)
📄 syscallsubr.h(16.94 KB)
📄 sysctl.h(47.96 KB)
📄 sysent.h(10.82 KB)
📄 syslimits.h(3.14 KB)
📄 syslog.h(7.25 KB)
📄 sysproto.h(153.38 KB)
📄 systm.h(21.97 KB)
📄 taskqueue.h(7.65 KB)
📄 terminal.h(8.25 KB)
📄 termios.h(151 B)
📄 thr.h(2.87 KB)
📄 tiio.h(12.62 KB)
📄 tim_filter.h(4.61 KB)
📄 time.h(16.87 KB)
📄 timeb.h(2.59 KB)
📄 timeet.h(3.65 KB)
📄 timeffc.h(11.94 KB)
📄 timepps.h(6.48 KB)
📄 timers.h(3.56 KB)
📄 times.h(2.46 KB)
📄 timespec.h(2.4 KB)
📄 timetc.h(3.16 KB)
📄 timex.h(6.61 KB)
📄 tree.h(27.93 KB)
📄 tslog.h(2.3 KB)
📄 tty.h(8.98 KB)
📄 ttycom.h(6.48 KB)
📄 ttydefaults.h(3.92 KB)
📄 ttydevsw.h(5.28 KB)
📄 ttydisc.h(2.93 KB)
📄 ttyhook.h(3.98 KB)
📄 ttyqueue.h(5.26 KB)
📄 turnstile.h(4.83 KB)
📄 types.h(11.64 KB)
📄 ucontext.h(2.91 KB)
📄 ucred.h(5.4 KB)
📄 uio.h(4.15 KB)
📄 umtx.h(5.94 KB)
📄 un.h(2.96 KB)
📄 unistd.h(7.34 KB)
📄 unpcb.h(6.77 KB)
📄 user.h(21.58 KB)
📄 utsname.h(2.47 KB)
📄 uuid.h(3.17 KB)
📄 vdso.h(4.26 KB)
📄 vmem.h(4.91 KB)
📄 vmmeter.h(7.72 KB)
📄 vnode.h(40.87 KB)
📄 vtoc.h(89 B)
📄 wait.h(6.11 KB)
📄 watchdog.h(4.22 KB)

Editing: linker.h

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 1997-2000 Doug Rabson
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD$
 */

#ifndef _SYS_LINKER_H_
#define _SYS_LINKER_H_

#ifdef _KERNEL

#include <machine/elf.h>
#include <sys/kobj.h>

#ifdef MALLOC_DECLARE
MALLOC_DECLARE(M_LINKER);
#endif

struct mod_depend;

/*
 * Object representing a file which has been loaded by the linker.
 */
typedef struct linker_file* linker_file_t;
typedef TAILQ_HEAD(, linker_file) linker_file_list_t;

typedef caddr_t linker_sym_t;		/* opaque symbol */
typedef c_caddr_t c_linker_sym_t;	/* const opaque symbol */
typedef int (*linker_function_name_callback_t)(const char *, void *);

/*
 * expanded out linker_sym_t
 */
typedef struct linker_symval {
    const char*		name;
    caddr_t		value;
    size_t		size;
} linker_symval_t;

typedef int (*linker_function_nameval_callback_t)(linker_file_t, int, linker_symval_t *, void *);

struct common_symbol {
    STAILQ_ENTRY(common_symbol) link;
    char*		name;
    caddr_t		address;
};

struct linker_file {
    KOBJ_FIELDS;
    int			refs;		/* reference count */
    int			userrefs;	/* kldload(2) count */
    int			flags;
#define LINKER_FILE_LINKED	0x1	/* file has been fully linked */
#define LINKER_FILE_MODULES	0x2	/* file has >0 modules at preload */
    TAILQ_ENTRY(linker_file) link;	/* list of all loaded files */
    char*		filename;	/* file which was loaded */
    char*		pathname;	/* file name with full path */
    int			id;		/* unique id */
    caddr_t		address;	/* load address */
    size_t		size;		/* size of file */
    caddr_t		ctors_addr;	/* address of .ctors */
    size_t		ctors_size;	/* size of .ctors */
    int			ndeps;		/* number of dependencies */
    linker_file_t*	deps;		/* list of dependencies */
    STAILQ_HEAD(, common_symbol) common; /* list of common symbols */
    TAILQ_HEAD(, module) modules;	/* modules in this file */
    TAILQ_ENTRY(linker_file) loaded;	/* preload dependency support */
    int			loadcnt;	/* load counter value */

/*
     * Function Boundary Tracing (FBT) or Statically Defined Tracing (SDT)
     * fields.
     */
    int			nenabled;	/* number of enabled probes. */
    int			fbt_nentries;	/* number of fbt entries created. */

#ifdef __arm__
    caddr_t		exidx_addr;	/* Unwind data index table start */
    size_t		exidx_size;	/* Unwind data index table size */
#endif
};

/*
 * Object implementing a class of file (a.out, elf, etc.)
 */
typedef struct linker_class *linker_class_t;
typedef TAILQ_HEAD(, linker_class) linker_class_list_t;

struct linker_class {
    KOBJ_CLASS_FIELDS;
    TAILQ_ENTRY(linker_class) link;	/* list of all file classes */
};

/*
 * Function type used when iterating over the list of linker files.
 */
typedef int linker_predicate_t(linker_file_t, void *);

/*
 * The "file" for the kernel.
 */
extern linker_file_t	linker_kernel_file;

/*
 * Obtain a reference to a module, loading it if required.
 */
int linker_reference_module(const char* _modname, struct mod_depend *_verinfo,
			    linker_file_t* _result);

/*
 * Release a reference to a module, unloading it if there are no more
 * references.  Note that one should either provide a module name and
 * optional version info or a linker file, but not both.
 */
int linker_release_module(const char *_modname, struct mod_depend *_verinfo,
			  linker_file_t _file);

/*
 * Iterate over all of the currently loaded linker files calling the
 * predicate function while the function returns 0.  Returns the value
 * returned by the last predicate function.
 */
int linker_file_foreach(linker_predicate_t *_predicate, void *_context);

/*
 * Lookup a symbol in a file.  If deps is TRUE, look in dependencies
 * if not found in file.
 */
caddr_t linker_file_lookup_symbol(linker_file_t _file, const char* _name,
				  int _deps);

/*
 * Lookup a linker set in a file.  Return pointers to the first entry,
 * last + 1, and count of entries.  Use: for (p = start; p < stop; p++) {}
 * void *start is really: "struct yoursetmember ***start;"
 */
int linker_file_lookup_set(linker_file_t _file, const char *_name,
			   void *_start, void *_stop, int *_count);

/*
 * List all functions in a file.
 */
int linker_file_function_listall(linker_file_t,
				 linker_function_nameval_callback_t, void *);

/*
 * Functions solely for use by the linker class handlers.
 */
int linker_add_class(linker_class_t _cls);
int linker_file_unload(linker_file_t _file, int flags);
int linker_load_dependencies(linker_file_t _lf);
linker_file_t linker_make_file(const char* _filename, linker_class_t _cls);

/*
 * DDB Helpers, tuned specifically for ddb/db_kld.c
 */
int linker_ddb_lookup(const char *_symstr, c_linker_sym_t *_sym);
int linker_ddb_search_symbol(caddr_t _value, c_linker_sym_t *_sym,
			     long *_diffp);
int linker_ddb_symbol_values(c_linker_sym_t _sym, linker_symval_t *_symval);
int linker_ddb_search_symbol_name(caddr_t value, char *buf, u_int buflen,
				  long *offset);

/*
 * stack(9) helper for situations where kernel locking is required.
 */
int linker_search_symbol_name_flags(caddr_t value, char *buf, u_int buflen,
    long *offset, int flags);
int linker_search_symbol_name(caddr_t value, char *buf, u_int buflen,
    long *offset);

/* HWPMC helper */
void *linker_hwpmc_list_objects(void);

#endif	/* _KERNEL */

/*
 * Module information subtypes
 */
#define MODINFO_END		0x0000		/* End of list */
#define MODINFO_NAME		0x0001		/* Name of module (string) */
#define MODINFO_TYPE		0x0002		/* Type of module (string) */
#define MODINFO_ADDR		0x0003		/* Loaded address */
#define MODINFO_SIZE		0x0004		/* Size of module */
#define MODINFO_EMPTY		0x0005		/* Has been deleted */
#define MODINFO_ARGS		0x0006		/* Parameters string */
#define MODINFO_METADATA	0x8000		/* Module-specfic */

#define MODINFOMD_AOUTEXEC	0x0001		/* a.out exec header */
#define MODINFOMD_ELFHDR	0x0002		/* ELF header */
#define MODINFOMD_SSYM		0x0003		/* start of symbols */
#define MODINFOMD_ESYM		0x0004		/* end of symbols */
#define MODINFOMD_DYNAMIC	0x0005		/* _DYNAMIC pointer */
/* These values are MD on PowerPC */
#if !defined(__powerpc__)
#define MODINFOMD_ENVP		0x0006		/* envp[] */
#define MODINFOMD_HOWTO		0x0007		/* boothowto */
#define MODINFOMD_KERNEND	0x0008		/* kernend */
#endif
#define MODINFOMD_SHDR		0x0009		/* section header table */
#define MODINFOMD_CTORS_ADDR	0x000a		/* address of .ctors */
#define MODINFOMD_CTORS_SIZE	0x000b		/* size of .ctors */
#define MODINFOMD_FW_HANDLE	0x000c		/* Firmware dependent handle */
#define MODINFOMD_KEYBUF	0x000d		/* Crypto key intake buffer */
#define MODINFOMD_FONT		0x000e		/* Console font */
#define MODINFOMD_NOCOPY	0x8000		/* don't copy this metadata to the kernel */

#define MODINFOMD_DEPLIST	(0x4001 | MODINFOMD_NOCOPY)	/* depends on */

#ifdef _KERNEL
#define MD_FETCH(mdp, info, type) ({ \
	type *__p; \
	__p = (type *)preload_search_info((mdp), MODINFO_METADATA | (info)); \
	__p ? *__p : 0; \
})
#endif

#define	LINKER_HINTS_VERSION	1		/* linker.hints file version */
#define	LINKER_HINTS_MAX	(1 << 20)	/* Allow at most 1MB for linker.hints */

#ifdef _KERNEL

/*
 * Module lookup
 */
extern vm_offset_t	preload_addr_relocate;
extern caddr_t		preload_metadata;

extern void *		preload_fetch_addr(caddr_t _mod);
extern size_t		preload_fetch_size(caddr_t _mod);
extern caddr_t		preload_search_by_name(const char *_name);
extern caddr_t		preload_search_by_type(const char *_type);
extern caddr_t		preload_search_next_name(caddr_t _base);
extern caddr_t		preload_search_info(caddr_t _mod, int _inf);
extern void		preload_delete_name(const char *_name);
extern void		preload_bootstrap_relocate(vm_offset_t _offset);
extern void		preload_dump(void);

#ifdef KLD_DEBUG

extern int kld_debug;
#define KLD_DEBUG_FILE	1	/* file load/unload */
#define KLD_DEBUG_SYM	2	/* symbol lookup */

#define KLD_DPF(cat, args)					\
	do {							\
		if (kld_debug & KLD_DEBUG_##cat) printf args;	\
	} while (0)

#else

#define KLD_DPF(cat, args)

#endif

typedef int elf_lookup_fn(linker_file_t, Elf_Size, int, Elf_Addr *);

/* Support functions */
bool	elf_is_ifunc_reloc(Elf_Size r_info);
int	elf_reloc(linker_file_t _lf, Elf_Addr base, const void *_rel,
	    int _type, elf_lookup_fn _lu);
int	elf_reloc_local(linker_file_t _lf, Elf_Addr base, const void *_rel,
	    int _type, elf_lookup_fn _lu);
Elf_Addr elf_relocaddr(linker_file_t _lf, Elf_Addr addr);
const Elf_Sym *elf_get_sym(linker_file_t _lf, Elf_Size _symidx);
const char *elf_get_symname(linker_file_t _lf, Elf_Size _symidx);
void	link_elf_ireloc(caddr_t kmdp);

#if defined(__aarch64__) || defined(__amd64__)
int	elf_reloc_late(linker_file_t _lf, Elf_Addr base, const void *_rel,
	    int _type, elf_lookup_fn _lu);
void	link_elf_late_ireloc(void);
#endif

typedef struct linker_ctf {
	const uint8_t 	*ctftab;	/* Decompressed CTF data. */
	int 		ctfcnt;		/* Number of CTF data bytes. */
	const Elf_Sym	*symtab;	/* Ptr to the symbol table. */
	int		nsym;		/* Number of symbols. */
	const char	*strtab;	/* Ptr to the string table. */
	int 		strcnt;		/* Number of string bytes. */
	uint32_t	**ctfoffp;	/* Ptr to array of obj/fnc offsets. */
	uint32_t	**typoffp;	/* Ptr to array of type offsets. */
	long		*typlenp;	/* Ptr to number of type data entries. */
} linker_ctf_t;

int	linker_ctf_get(linker_file_t, linker_ctf_t *);

int elf_cpu_load_file(linker_file_t);
int elf_cpu_unload_file(linker_file_t);
int elf_cpu_parse_dynamic(caddr_t, Elf_Dyn *);

/* values for type */
#define ELF_RELOC_REL	1
#define ELF_RELOC_RELA	2

/*
 * This is version 1 of the KLD file status structure. It is identified
 * by its _size_ in the version field.
 */
struct kld_file_stat_1 {
    int		version;	/* set to sizeof(struct kld_file_stat_1) */
    char        name[MAXPATHLEN];
    int		refs;
    int		id;
    caddr_t	address;	/* load address */
    size_t	size;		/* size in bytes */
};
#endif /* _KERNEL */

struct kld_file_stat {
    int		version;	/* set to sizeof(struct kld_file_stat) */
    char        name[MAXPATHLEN];
    int		refs;
    int		id;
    caddr_t	address;	/* load address */
    size_t	size;		/* size in bytes */
    char        pathname[MAXPATHLEN];
};

struct kld_sym_lookup {
    int		version;	/* set to sizeof(struct kld_sym_lookup) */
    char	*symname;	/* Symbol name we are looking up */
    u_long	symvalue;
    size_t	symsize;
};
#define KLDSYM_LOOKUP	1

/*
 * Flags for kldunloadf() and linker_file_unload()
 */
#define LINKER_UNLOAD_NORMAL	0
#define LINKER_UNLOAD_FORCE	1

#ifndef _KERNEL

#include <sys/cdefs.h>

__BEGIN_DECLS
int	kldload(const char* _file);
int	kldunload(int _fileid);
int	kldunloadf(int _fileid, int flags);
int	kldfind(const char* _file);
int	kldnext(int _fileid);
int	kldstat(int _fileid, struct kld_file_stat* _stat);
int	kldfirstmod(int _fileid);
int	kldsym(int _fileid, int _cmd, void *_data);
__END_DECLS

#endif

#endif /* !_SYS_LINKER_H_ */

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