sys/emulation/ndis/subr_ntoskrnl.c

   1 /*
   2  * Copyright (c) 2003
   3  *      Bill Paul <wpaul@windriver.com>.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by Bill Paul.
  16  * 4. Neither the name of the author nor the names of any co-contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
  24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  30  * THE POSSIBILITY OF SUCH DAMAGE.
  31  *
  32  * $FreeBSD: src/sys/compat/ndis/subr_ntoskrnl.c,v 1.40 2004/07/20 20:28:57 wpaul Exp $
  33  * $DragonFly: src/sys/emulation/ndis/subr_ntoskrnl.c,v 1.13 2006/12/23 00:27:02 swildner Exp $
  34  */
  35
  36 #include <sys/ctype.h>
  37 #include <sys/unistd.h>
  38 #include <sys/param.h>
  39 #include <sys/types.h>
  40 #include <sys/errno.h>
  41 #include <sys/systm.h>
  42 #include <sys/malloc.h>
  43 #include <sys/lock.h>
  44
  45 #include <sys/callout.h>
  46 #if __FreeBSD_version > 502113
  47 #include <sys/kdb.h>
  48 #endif
  49 #include <sys/kernel.h>
  50 #include <sys/proc.h>
  51 #include <sys/kthread.h>
  52 #include <sys/bus.h>
  53 #include <sys/rman.h>
  54
  55 #include <machine/atomic.h>
  56 #include <machine/clock.h>
  57 #include <machine/stdarg.h>
  58
  59 #include "regcall.h"
  60 #include "pe_var.h"
  61 #include "resource_var.h"
  62 #include "ntoskrnl_var.h"
  63 #include "ndis_var.h"
  64 #include "hal_var.h"
  65
  66 #define __regparm __attribute__((regparm(3)))
  67
  68 #define FUNC void(*)(void)
  69
  70 __stdcall static uint8_t ntoskrnl_unicode_equal(ndis_unicode_string *,
  71         ndis_unicode_string *, uint8_t);
  72 __stdcall static void ntoskrnl_unicode_copy(ndis_unicode_string *,
  73         ndis_unicode_string *);
  74 __stdcall static ndis_status ntoskrnl_unicode_to_ansi(ndis_ansi_string *,
  75         ndis_unicode_string *, uint8_t);
  76 __stdcall static ndis_status ntoskrnl_ansi_to_unicode(ndis_unicode_string *,
  77         ndis_ansi_string *, uint8_t);
  78 __stdcall static void *ntoskrnl_iobuildsynchfsdreq(uint32_t, void *,
  79         void *, uint32_t, uint32_t *, void *, void *);
  80
  81 /*
  82  * registerized calls
  83  */
  84 __stdcall __regcall static uint32_t
  85     ntoskrnl_iofcalldriver(REGARGS2(void *dobj, void *irp));
  86 __stdcall __regcall static void
  87     ntoskrnl_iofcompletereq(REGARGS2(void *irp, uint8_t prioboost));
  88 __stdcall __regcall static slist_entry *
  89     ntoskrnl_push_slist(REGARGS2(slist_header *head, slist_entry *entry));
  90 __stdcall __regcall static slist_entry *
  91     ntoskrnl_pop_slist(REGARGS1(slist_header *head));
  92 __stdcall __regcall static slist_entry *
  93     ntoskrnl_push_slist_ex(REGARGS2(slist_header *head, slist_entry *entry), kspin_lock *lock);
  94 __stdcall __regcall static slist_entry *
  95     ntoskrnl_pop_slist_ex(REGARGS2(slist_header *head, kspin_lock *lock));
  96
  97 __stdcall __regcall static uint32_t
  98     ntoskrnl_interlock_inc(REGARGS1(volatile uint32_t *addend));
  99 __stdcall __regcall static uint32_t
 100     ntoskrnl_interlock_dec(REGARGS1(volatile uint32_t *addend));
 101 __stdcall __regcall static void
 102     ntoskrnl_interlock_addstat(REGARGS2(uint64_t *addend, uint32_t inc));
 103 __stdcall __regcall static void
 104     ntoskrnl_objderef(REGARGS1(void *object));
 105
 106 __stdcall static uint32_t ntoskrnl_waitforobjs(uint32_t,
 107         nt_dispatch_header **, uint32_t, uint32_t, uint32_t, uint8_t,
 108         int64_t *, wait_block *);
 109 static void ntoskrnl_wakeup(void *);
 110 static void ntoskrnl_timercall(void *);
 111 static void ntoskrnl_run_dpc(void *);
 112 __stdcall static void ntoskrnl_writereg_ushort(uint16_t *, uint16_t);
 113 __stdcall static uint16_t ntoskrnl_readreg_ushort(uint16_t *);
 114 __stdcall static void ntoskrnl_writereg_ulong(uint32_t *, uint32_t);
 115 __stdcall static uint32_t ntoskrnl_readreg_ulong(uint32_t *);
 116 __stdcall static void ntoskrnl_writereg_uchar(uint8_t *, uint8_t);
 117 __stdcall static uint8_t ntoskrnl_readreg_uchar(uint8_t *);
 118 __stdcall static int64_t _allmul(int64_t, int64_t);
 119 __stdcall static int64_t _alldiv(int64_t, int64_t);
 120 __stdcall static int64_t _allrem(int64_t, int64_t);
 121 __regparm static int64_t _allshr(int64_t, uint8_t);
 122 __regparm static int64_t _allshl(int64_t, uint8_t);
 123 __stdcall static uint64_t _aullmul(uint64_t, uint64_t);
 124 __stdcall static uint64_t _aulldiv(uint64_t, uint64_t);
 125 __stdcall static uint64_t _aullrem(uint64_t, uint64_t);
 126 __regparm static uint64_t _aullshr(uint64_t, uint8_t);
 127 __regparm static uint64_t _aullshl(uint64_t, uint8_t);
 128 __stdcall static void *ntoskrnl_allocfunc(uint32_t, size_t, uint32_t);
 129 __stdcall static void ntoskrnl_freefunc(void *);
 130 static slist_entry *ntoskrnl_pushsl(slist_header *, slist_entry *);
 131 static slist_entry *ntoskrnl_popsl(slist_header *);
 132 __stdcall static void ntoskrnl_init_lookaside(paged_lookaside_list *,
 133         lookaside_alloc_func *, lookaside_free_func *,
 134         uint32_t, size_t, uint32_t, uint16_t);
 135 __stdcall static void ntoskrnl_delete_lookaside(paged_lookaside_list *);
 136 __stdcall static void ntoskrnl_init_nplookaside(npaged_lookaside_list *,
 137         lookaside_alloc_func *, lookaside_free_func *,
 138         uint32_t, size_t, uint32_t, uint16_t);
 139 __stdcall static void ntoskrnl_delete_nplookaside(npaged_lookaside_list *);
 140 __stdcall static void ntoskrnl_freemdl(ndis_buffer *);
 141 __stdcall static uint32_t ntoskrnl_sizeofmdl(void *, size_t);
 142 __stdcall static void ntoskrnl_build_npaged_mdl(ndis_buffer *);
 143 __stdcall static void *ntoskrnl_mmaplockedpages(ndis_buffer *, uint8_t);
 144 __stdcall static void *ntoskrnl_mmaplockedpages_cache(ndis_buffer *,
 145         uint8_t, uint32_t, void *, uint32_t, uint32_t);
 146 __stdcall static void ntoskrnl_munmaplockedpages(void *, ndis_buffer *);
 147 __stdcall static void ntoskrnl_init_lock(kspin_lock *);
 148 __stdcall static size_t ntoskrnl_memcmp(const void *, const void *, size_t);
 149 __stdcall static void ntoskrnl_init_ansi_string(ndis_ansi_string *, char *);
 150 __stdcall static void ntoskrnl_init_unicode_string(ndis_unicode_string *,
 151         uint16_t *);
 152 __stdcall static void ntoskrnl_free_unicode_string(ndis_unicode_string *);
 153 __stdcall static void ntoskrnl_free_ansi_string(ndis_ansi_string *);
 154 __stdcall static ndis_status ntoskrnl_unicode_to_int(ndis_unicode_string *,
 155         uint32_t, uint32_t *);
 156 static int atoi (const char *);
 157 static long atol (const char *);
 158 static int rand(void);
 159 static void ntoskrnl_time(uint64_t *);
 160 __stdcall static uint8_t ntoskrnl_wdmver(uint8_t, uint8_t);
 161 static void ntoskrnl_thrfunc(void *);
 162 __stdcall static ndis_status ntoskrnl_create_thread(ndis_handle *,
 163         uint32_t, void *, ndis_handle, void *, void *, void *);
 164 __stdcall static ndis_status ntoskrnl_thread_exit(ndis_status);
 165 __stdcall static ndis_status ntoskrnl_devprop(device_object *, uint32_t,
 166         uint32_t, void *, uint32_t *);
 167 __stdcall static void ntoskrnl_init_mutex(kmutant *, uint32_t);
 168 __stdcall static uint32_t ntoskrnl_release_mutex(kmutant *, uint8_t);
 169 __stdcall static uint32_t ntoskrnl_read_mutex(kmutant *);
 170 __stdcall static ndis_status ntoskrnl_objref(ndis_handle, uint32_t, void *,
 171     uint8_t, void **, void **);
 172 __stdcall static uint32_t ntoskrnl_zwclose(ndis_handle);
 173 static uint32_t ntoskrnl_dbgprint(char *, ...);
 174 __stdcall static void ntoskrnl_debugger(void);
 175 __stdcall static void dummy(void);
 176
 177 static struct lwkt_token ntoskrnl_dispatchtoken;
 178 static kspin_lock ntoskrnl_global;
 179 static int ntoskrnl_kth = 0;
 180 static struct nt_objref_head ntoskrnl_reflist;
 181
 182 static MALLOC_DEFINE(M_NDIS, "ndis", "ndis emulation");
 183
 184 int
 185 ntoskrnl_libinit(void)
 186 {
 187         lwkt_token_init(&ntoskrnl_dispatchtoken, 1);
 188         ntoskrnl_init_lock(&ntoskrnl_global);
 189         TAILQ_INIT(&ntoskrnl_reflist);
 190         return(0);
 191 }
 192
 193 int
 194 ntoskrnl_libfini(void)
 195 {
 196         lwkt_token_uninit(&ntoskrnl_dispatchtoken);
 197         return(0);
 198 }
 199
 200 __stdcall static uint8_t
 201 ntoskrnl_unicode_equal(ndis_unicode_string *str1,
 202                        ndis_unicode_string *str2,
 203                        uint8_t caseinsensitive)
 204 {
 205         int                     i;
 206
 207         if (str1->nus_len != str2->nus_len)
 208                 return(FALSE);
 209
 210         for (i = 0; i < str1->nus_len; i++) {
 211                 if (caseinsensitive == TRUE) {
 212                         if (toupper((char)(str1->nus_buf[i] & 0xFF)) !=
 213                             toupper((char)(str2->nus_buf[i] & 0xFF)))
 214                                 return(FALSE);
 215                 } else {
 216                         if (str1->nus_buf[i] != str2->nus_buf[i])
 217                                 return(FALSE);
 218                 }
 219         }
 220
 221         return(TRUE);
 222 }
 223
 224 __stdcall static void
 225 ntoskrnl_unicode_copy(ndis_unicode_string *dest,
 226                       ndis_unicode_string *src)
 227 {
 228
 229         if (dest->nus_maxlen >= src->nus_len)
 230                 dest->nus_len = src->nus_len;
 231         else
 232                 dest->nus_len = dest->nus_maxlen;
 233         memcpy(dest->nus_buf, src->nus_buf, dest->nus_len);
 234         return;
 235 }
 236
 237 __stdcall static ndis_status
 238 ntoskrnl_unicode_to_ansi(ndis_ansi_string *dest,
 239                          ndis_unicode_string *src,
 240                          uint8_t allocate)
 241 {
 242         char                    *astr = NULL;
 243
 244         if (dest == NULL || src == NULL)
 245                 return(NDIS_STATUS_FAILURE);
 246
 247         if (allocate == TRUE) {
 248                 if (ndis_unicode_to_ascii(src->nus_buf, src->nus_len, &astr))
 249                         return(NDIS_STATUS_FAILURE);
 250                 dest->nas_buf = astr;
 251                 dest->nas_len = dest->nas_maxlen = strlen(astr);
 252         } else {
 253                 dest->nas_len = src->nus_len / 2; /* XXX */
 254                 if (dest->nas_maxlen < dest->nas_len)
 255                         dest->nas_len = dest->nas_maxlen;
 256                 ndis_unicode_to_ascii(src->nus_buf, dest->nas_len * 2,
 257                     &dest->nas_buf);
 258         }
 259         return (NDIS_STATUS_SUCCESS);
 260 }
 261
 262 __stdcall static ndis_status
 263 ntoskrnl_ansi_to_unicode(ndis_unicode_string *dest,
 264                          ndis_ansi_string *src,
 265                          uint8_t allocate)
 266 {
 267         uint16_t                *ustr = NULL;
 268
 269         if (dest == NULL || src == NULL)
 270                 return(NDIS_STATUS_FAILURE);
 271
 272         if (allocate == TRUE) {
 273                 if (ndis_ascii_to_unicode(src->nas_buf, &ustr))
 274                         return(NDIS_STATUS_FAILURE);
 275                 dest->nus_buf = ustr;
 276                 dest->nus_len = dest->nus_maxlen = strlen(src->nas_buf) * 2;
 277         } else {
 278                 dest->nus_len = src->nas_len * 2; /* XXX */
 279                 if (dest->nus_maxlen < dest->nus_len)
 280                         dest->nus_len = dest->nus_maxlen;
 281                 ndis_ascii_to_unicode(src->nas_buf, &dest->nus_buf);
 282         }
 283         return (NDIS_STATUS_SUCCESS);
 284 }
 285
 286 __stdcall static void *
 287 ntoskrnl_iobuildsynchfsdreq(uint32_t func, void *dobj, void *buf,
 288                             uint32_t len, uint32_t *off,
 289                             void *event, void *status)
 290 {
 291         return(NULL);
 292 }
 293
 294 __stdcall __regcall static uint32_t
 295 ntoskrnl_iofcalldriver(REGARGS2(void *dobj, void *irp))
 296 {
 297         return(0);
 298 }
 299
 300 __stdcall __regcall static void
 301 ntoskrnl_iofcompletereq(REGARGS2(void *irp, uint8_t prioboost))
 302 {
 303 }
 304
 305 static void
 306 ntoskrnl_wakeup(void *arg)
 307 {
 308         nt_dispatch_header      *obj;
 309         wait_block              *w;
 310         list_entry              *e;
 311         struct thread           *td;
 312
 313         obj = arg;
 314
 315         lwkt_gettoken(&ntoskrnl_dispatchtoken);
 316         obj->dh_sigstate = TRUE;
 317         e = obj->dh_waitlisthead.nle_flink;
 318         while (e != &obj->dh_waitlisthead) {
 319                 w = (wait_block *)e;
 320                 td = w->wb_kthread;
 321                 ndis_thresume(td);
 322                 /*
 323                  * For synchronization objects, only wake up
 324                  * the first waiter.
 325                  */
 326                 if (obj->dh_type == EVENT_TYPE_SYNC)
 327                         break;
 328                 e = e->nle_flink;
 329         }
 330         lwkt_reltoken(&ntoskrnl_dispatchtoken);
 331 }
 332
 333 static void
 334 ntoskrnl_time(uint64_t *tval)
 335 {
 336         struct timespec         ts;
 337
 338         nanotime(&ts);
 339         *tval = (uint64_t)ts.tv_nsec / 100 + (uint64_t)ts.tv_sec * 10000000 +
 340             11644473600LL;
 341
 342         return;
 343 }
 344
 345 /*
 346  * KeWaitForSingleObject() is a tricky beast, because it can be used
 347  * with several different object types: semaphores, timers, events,
 348  * mutexes and threads. Semaphores don't appear very often, but the
 349  * other object types are quite common. KeWaitForSingleObject() is
 350  * what's normally used to acquire a mutex, and it can be used to
 351  * wait for a thread termination.
 352  *
 353  * The Windows NDIS API is implemented in terms of Windows kernel
 354  * primitives, and some of the object manipulation is duplicated in
 355  * NDIS. For example, NDIS has timers and events, which are actually
 356  * Windows kevents and ktimers. Now, you're supposed to only use the
 357  * NDIS variants of these objects within the confines of the NDIS API,
 358  * but there are some naughty developers out there who will use
 359  * KeWaitForSingleObject() on NDIS timer and event objects, so we
 360  * have to support that as well. Conseqently, our NDIS timer and event
 361  * code has to be closely tied into our ntoskrnl timer and event code,
 362  * just as it is in Windows.
 363  *
 364  * KeWaitForSingleObject() may do different things for different kinds
 365  * of objects:
 366  *
 367  * - For events, we check if the event has been signalled. If the
 368  *   event is already in the signalled state, we just return immediately,
 369  *   otherwise we wait for it to be set to the signalled state by someone
 370  *   else calling KeSetEvent(). Events can be either synchronization or
 371  *   notification events.
 372  *
 373  * - For timers, if the timer has already fired and the timer is in
 374  *   the signalled state, we just return, otherwise we wait on the
 375  *   timer. Unlike an event, timers get signalled automatically when
 376  *   they expire rather than someone having to trip them manually.
 377  *   Timers initialized with KeInitializeTimer() are always notification
 378  *   events: KeInitializeTimerEx() lets you initialize a timer as
 379  *   either a notification or synchronization event.
 380  *
 381  * - For mutexes, we try to acquire the mutex and if we can't, we wait
 382  *   on the mutex until it's available and then grab it. When a mutex is
 383  *   released, it enters the signaled state, which wakes up one of the
 384  *   threads waiting to acquire it. Mutexes are always synchronization
 385  *   events.
 386  *
 387  * - For threads, the only thing we do is wait until the thread object
 388  *   enters a signalled state, which occurs when the thread terminates.
 389  *   Threads are always notification events.
 390  *
 391  * A notification event wakes up all threads waiting on an object. A
 392  * synchronization event wakes up just one. Also, a synchronization event
 393  * is auto-clearing, which means we automatically set the event back to
 394  * the non-signalled state once the wakeup is done.
 395  */
 396
 397 __stdcall uint32_t
 398 ntoskrnl_waitforobj(nt_dispatch_header *obj, uint32_t reason,
 399                     uint32_t mode, uint8_t alertable, int64_t *duetime)
 400 {
 401         struct thread           *td = curthread;
 402         kmutant                 *km;
 403         wait_block              w;
 404         struct timeval          tv;
 405         int                     error = 0;
 406         int                     ticks;
 407         uint64_t                curtime;
 408
 409         if (obj == NULL)
 410                 return(STATUS_INVALID_PARAMETER);
 411
 412         lwkt_gettoken(&ntoskrnl_dispatchtoken);
 413
 414         /*
 415          * See if the object is a mutex. If so, and we already own
 416          * it, then just increment the acquisition count and return.
 417          *
 418          * For any other kind of object, see if it's already in the
 419          * signalled state, and if it is, just return. If the object
 420          * is marked as a synchronization event, reset the state to
 421          * unsignalled.
 422          */
 423
 424         if (obj->dh_size == OTYPE_MUTEX) {
 425                 km = (kmutant *)obj;
 426                 if (km->km_ownerthread == NULL ||
 427                     km->km_ownerthread == curthread->td_proc) {
 428                         obj->dh_sigstate = FALSE;
 429                         km->km_acquirecnt++;
 430                         km->km_ownerthread = curthread->td_proc;
 431                         lwkt_reltoken(&ntoskrnl_dispatchtoken);
 432                         return (STATUS_SUCCESS);
 433                 }
 434         } else if (obj->dh_sigstate == TRUE) {
 435                 if (obj->dh_type == EVENT_TYPE_SYNC)
 436                         obj->dh_sigstate = FALSE;
 437                 lwkt_reltoken(&ntoskrnl_dispatchtoken);
 438                 return (STATUS_SUCCESS);
 439         }
 440
 441         w.wb_object = obj;
 442         w.wb_kthread = td;
 443
 444         INSERT_LIST_TAIL((&obj->dh_waitlisthead), (&w.wb_waitlist));
 445
 446         /*
 447          * The timeout value is specified in 100 nanosecond units
 448          * and can be a positive or negative number. If it's positive,
 449          * then the duetime is absolute, and we need to convert it
 450          * to an absolute offset relative to now in order to use it.
 451          * If it's negative, then the duetime is relative and we
 452          * just have to convert the units.
 453          */
 454
 455         if (duetime != NULL) {
 456                 if (*duetime < 0) {
 457                         tv.tv_sec = - (*duetime) / 10000000;
 458                         tv.tv_usec = (- (*duetime) / 10) -
 459                             (tv.tv_sec * 1000000);
 460                 } else {
 461                         ntoskrnl_time(&curtime);
 462                         if (*duetime < curtime)
 463                                 tv.tv_sec = tv.tv_usec = 0;
 464                         else {
 465                                 tv.tv_sec = ((*duetime) - curtime) / 10000000;
 466                                 tv.tv_usec = ((*duetime) - curtime) / 10 -
 467                                     (tv.tv_sec * 1000000);
 468                         }
 469                 }
 470         }
 471
 472         lwkt_reltoken(&ntoskrnl_dispatchtoken);
 473
 474         ticks = 1 + tv.tv_sec * hz + tv.tv_usec * hz / 1000000;
 475         error = ndis_thsuspend(td, duetime == NULL ? 0 : ticks);
 476
 477         lwkt_gettoken(&tokref, &ntoskrnl_dispatchtoken);
 478
 479         /* We timed out. Leave the object alone and return status. */
 480
 481         if (error == EWOULDBLOCK) {
 482                 REMOVE_LIST_ENTRY((&w.wb_waitlist));
 483                 lwkt_reltoken(&ntoskrnl_dispatchtoken);
 484                 return(STATUS_TIMEOUT);
 485         }
 486
 487         /*
 488          * Mutexes are always synchronization objects, which means
 489          * if several threads are waiting to acquire it, only one will
 490          * be woken up. If that one is us, and the mutex is up for grabs,
 491          * grab it.
 492          */
 493
 494         if (obj->dh_size == OTYPE_MUTEX) {
 495                 km = (kmutant *)obj;
 496                 if (km->km_ownerthread == NULL) {
 497                         km->km_ownerthread = curthread->td_proc;
 498                         km->km_acquirecnt++;
 499                 }
 500         }
 501
 502         if (obj->dh_type == EVENT_TYPE_SYNC)
 503                 obj->dh_sigstate = FALSE;
 504         REMOVE_LIST_ENTRY((&w.wb_waitlist));
 505
 506         lwkt_reltoken(&ntoskrnl_dispatchtoken);
 507
 508         return(STATUS_SUCCESS);
 509 }
 510
 511 __stdcall static uint32_t
 512 ntoskrnl_waitforobjs(uint32_t cnt, nt_dispatch_header *obj[],
 513                      uint32_t wtype, uint32_t reason, uint32_t mode,
 514                      uint8_t alertable, int64_t *duetime,
 515                      wait_block *wb_array)
 516 {
 517         struct thread           *td = curthread;
 518         kmutant                 *km;
 519         wait_block              _wb_array[THREAD_WAIT_OBJECTS];
 520         wait_block              *w;
 521         struct timeval          tv;
 522         int                     i, wcnt = 0, widx = 0, error = 0;
 523         uint64_t                curtime;
 524         struct timespec         t1, t2;
 525
 526         if (cnt > MAX_WAIT_OBJECTS)
 527                 return(STATUS_INVALID_PARAMETER);
 528         if (cnt > THREAD_WAIT_OBJECTS && wb_array == NULL)
 529                 return(STATUS_INVALID_PARAMETER);
 530
 531         lwkt_gettoken(&ntoskrnl_dispatchtoken);
 532
 533         if (wb_array == NULL)
 534                 w = &_wb_array[0];
 535         else
 536                 w = wb_array;
 537
 538         tv.tv_sec = 0;          /* fix compiler warning */
 539         tv.tv_usec = 0;         /* fix compiler warning */
 540
 541         /* First pass: see if we can satisfy any waits immediately. */
 542
 543         for (i = 0; i < cnt; i++) {
 544                 if (obj[i]->dh_size == OTYPE_MUTEX) {
 545                         km = (kmutant *)obj[i];
 546                         if (km->km_ownerthread == NULL ||
 547                             km->km_ownerthread == curthread->td_proc) {
 548                                 obj[i]->dh_sigstate = FALSE;
 549                                 km->km_acquirecnt++;
 550                                 km->km_ownerthread = curthread->td_proc;
 551                                 if (wtype == WAITTYPE_ANY) {
 552                                         lwkt_reltoken(&ntoskrnl_dispatchtoken);
 553                                         return (STATUS_WAIT_0 + i);
 554                                 }
 555                         }
 556                 } else if (obj[i]->dh_sigstate == TRUE) {
 557                         if (obj[i]->dh_type == EVENT_TYPE_SYNC)
 558                                 obj[i]->dh_sigstate = FALSE;
 559                         if (wtype == WAITTYPE_ANY) {
 560                                 lwkt_reltoken(&ntoskrnl_dispatchtoken);
 561                                 return (STATUS_WAIT_0 + i);
 562                         }
 563                 }
 564         }
 565
 566         /*
 567          * Second pass: set up wait for anything we can't
 568          * satisfy immediately.
 569          */
 570
 571         for (i = 0; i < cnt; i++) {
 572                 if (obj[i]->dh_sigstate == TRUE)
 573                         continue;
 574                 INSERT_LIST_TAIL((&obj[i]->dh_waitlisthead),
 575                     (&w[i].wb_waitlist));
 576                 w[i].wb_kthread = td;
 577                 w[i].wb_object = obj[i];
 578                 wcnt++;
 579         }
 580
 581         if (duetime) {
 582                 if (*duetime < 0) {
 583                         tv.tv_sec = -*duetime / 10000000;
 584                         tv.tv_usec = (-*duetime / 10) - (tv.tv_sec * 1000000);
 585                 } else {
 586                         ntoskrnl_time(&curtime);
 587                         if (*duetime < curtime) {
 588                                 tv.tv_sec = 0;
 589                                 tv.tv_usec = 0;
 590                         } else {
 591                                 tv.tv_sec = ((*duetime) - curtime) / 10000000;
 592                                 tv.tv_usec = ((*duetime) - curtime) / 10 -
 593                                     (tv.tv_sec * 1000000);
 594                         }
 595                 }
 596         }
 597
 598         while (wcnt) {
 599                 nanotime(&t1);
 600                 lwkt_reltoken(&ntoskrnl_dispatchtoken);
 601
 602                 if (duetime) {
 603                         ticks = 1 + tv.tv_sec * hz + tv.tv_usec * hz / 1000000;
 604                         error = ndis_thsuspend(td, ticks);
 605                 } else {
 606                         error = ndis_thsuspend(td, 0);
 607                 }
 608
 609                 lwkt_gettoken(&ntoskrnl_dispatchtoken);
 610                 nanotime(&t2);
 611
 612                 for (i = 0; i < cnt; i++) {
 613                         if (obj[i]->dh_size == OTYPE_MUTEX) {
 614                                 km = (kmutant *)obj;
 615                                 if (km->km_ownerthread == NULL) {
 616                                         km->km_ownerthread =
 617                                             curthread->td_proc;
 618                                         km->km_acquirecnt++;
 619                                 }
 620                         }
 621                         if (obj[i]->dh_sigstate == TRUE) {
 622                                 widx = i;
 623                                 if (obj[i]->dh_type == EVENT_TYPE_SYNC)
 624                                         obj[i]->dh_sigstate = FALSE;
 625                                 REMOVE_LIST_ENTRY((&w[i].wb_waitlist));
 626                                 wcnt--;
 627                         }
 628                 }
 629
 630                 if (error || wtype == WAITTYPE_ANY)
 631                         break;
 632
 633                 if (duetime) {
 634                         tv.tv_sec -= (t2.tv_sec - t1.tv_sec);
 635                         tv.tv_usec -= (t2.tv_nsec - t1.tv_nsec) / 1000;
 636                 }
 637         }
 638
 639         if (wcnt) {
 640                 for (i = 0; i < cnt; i++)
 641                         REMOVE_LIST_ENTRY((&w[i].wb_waitlist));
 642         }
 643
 644         if (error == EWOULDBLOCK) {
 645                 lwkt_reltoken(&ntoskrnl_dispatchtoken);
 646                 return(STATUS_TIMEOUT);
 647         }
 648
 649         if (wtype == WAITTYPE_ANY && wcnt) {
 650                 lwkt_reltoken(&ntoskrnl_dispatchtoken);
 651                 return(STATUS_WAIT_0 + widx);
 652         }
 653
 654         lwkt_reltoken(&ntoskrnl_dispatchtoken);
 655
 656         return(STATUS_SUCCESS);
 657 }
 658
 659 __stdcall static void
 660 ntoskrnl_writereg_ushort(uint16_t *reg, uint16_t val)
 661 {
 662         bus_space_write_2(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg, val);
 663         return;
 664 }
 665
 666 __stdcall static uint16_t
 667 ntoskrnl_readreg_ushort(uint16_t *reg)
 668 {
 669         return(bus_space_read_2(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg));
 670 }
 671
 672 __stdcall static void
 673 ntoskrnl_writereg_ulong(uint32_t *reg, uint32_t val)
 674 {
 675         bus_space_write_4(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg, val);
 676         return;
 677 }
 678
 679 __stdcall static uint32_t
 680 ntoskrnl_readreg_ulong(uint32_t *reg)
 681 {
 682         return(bus_space_read_4(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg));
 683 }
 684
 685 __stdcall static uint8_t
 686 ntoskrnl_readreg_uchar(uint8_t *reg)
 687 {
 688         return(bus_space_read_1(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg));
 689 }
 690
 691 __stdcall static void
 692 ntoskrnl_writereg_uchar(uint8_t *reg, uint8_t val)
 693 {
 694         bus_space_write_1(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg, val);
 695         return;
 696 }
 697
 698 __stdcall static int64_t
 699 _allmul(int64_t a, int64_t b)
 700 {
 701         return (a * b);
 702 }
 703
 704 __stdcall static int64_t
 705 _alldiv(int64_t a, int64_t b)
 706 {
 707         return (a / b);
 708 }
 709
 710 __stdcall static int64_t
 711 _allrem(int64_t a, int64_t b)
 712 {
 713         return (a % b);
 714 }
 715
 716 __stdcall static uint64_t
 717 _aullmul(uint64_t a, uint64_t b)
 718 {
 719         return (a * b);
 720 }
 721
 722 __stdcall static uint64_t
 723 _aulldiv(uint64_t a, uint64_t b)
 724 {
 725         return (a / b);
 726 }
 727
 728 __stdcall static uint64_t
 729 _aullrem(uint64_t a, uint64_t b)
 730 {
 731         return (a % b);
 732 }
 733
 734 __regparm static int64_t
 735 _allshl(int64_t a, uint8_t b)
 736 {
 737         return (a << b);
 738 }
 739
 740 __regparm static uint64_t
 741 _aullshl(uint64_t a, uint8_t b)
 742 {
 743         return (a << b);
 744 }
 745
 746 __regparm static int64_t
 747 _allshr(int64_t a, uint8_t b)
 748 {
 749         return (a >> b);
 750 }
 751
 752 __regparm static uint64_t
 753 _aullshr(uint64_t a, uint8_t b)
 754 {
 755         return (a >> b);
 756 }
 757
 758 static slist_entry *
 759 ntoskrnl_pushsl(slist_header *head, slist_entry *entry)
 760 {
 761         slist_entry             *oldhead;
 762
 763         oldhead = head->slh_list.slh_next;
 764         entry->sl_next = head->slh_list.slh_next;
 765         head->slh_list.slh_next = entry;
 766         head->slh_list.slh_depth++;
 767         head->slh_list.slh_seq++;
 768
 769         return(oldhead);
 770 }
 771
 772 static slist_entry *
 773 ntoskrnl_popsl(slist_header *head)
 774 {
 775         slist_entry             *first;
 776
 777         first = head->slh_list.slh_next;
 778         if (first != NULL) {
 779                 head->slh_list.slh_next = first->sl_next;
 780                 head->slh_list.slh_depth--;
 781                 head->slh_list.slh_seq++;
 782         }
 783
 784         return(first);
 785 }
 786
 787 __stdcall static void *
 788 ntoskrnl_allocfunc(uint32_t pooltype, size_t size, uint32_t tag)
 789 {
 790         return(kmalloc(size, M_DEVBUF, M_WAITOK));
 791 }
 792
 793 __stdcall static void
 794 ntoskrnl_freefunc(void *buf)
 795 {
 796         kfree(buf, M_DEVBUF);
 797         return;
 798 }
 799
 800 __stdcall static void
 801 ntoskrnl_init_lookaside(paged_lookaside_list *lookaside,
 802                         lookaside_alloc_func *allocfunc,
 803                         lookaside_free_func *freefunc,
 804                         uint32_t flags, size_t size,
 805                         uint32_t tag, uint16_t depth)
 806 {
 807         bzero((char *)lookaside, sizeof(paged_lookaside_list));
 808
 809         if (size < sizeof(slist_entry))
 810                 lookaside->nll_l.gl_size = sizeof(slist_entry);
 811         else
 812                 lookaside->nll_l.gl_size = size;
 813         lookaside->nll_l.gl_tag = tag;
 814         if (allocfunc == NULL)
 815                 lookaside->nll_l.gl_allocfunc = ntoskrnl_allocfunc;
 816         else
 817                 lookaside->nll_l.gl_allocfunc = allocfunc;
 818
 819         if (freefunc == NULL)
 820                 lookaside->nll_l.gl_freefunc = ntoskrnl_freefunc;
 821         else
 822                 lookaside->nll_l.gl_freefunc = freefunc;
 823
 824         ntoskrnl_init_lock(&lookaside->nll_obsoletelock);
 825
 826         lookaside->nll_l.gl_depth = LOOKASIDE_DEPTH;
 827         lookaside->nll_l.gl_maxdepth = LOOKASIDE_DEPTH;
 828
 829         return;
 830 }
 831
 832 __stdcall static void
 833 ntoskrnl_delete_lookaside(paged_lookaside_list *lookaside)
 834 {
 835         void                    *buf;
 836         __stdcall void          (*freefunc)(void *);
 837
 838         freefunc = lookaside->nll_l.gl_freefunc;
 839         while((buf = ntoskrnl_popsl(&lookaside->nll_l.gl_listhead)) != NULL)
 840                 freefunc(buf);
 841
 842         return;
 843 }
 844
 845 __stdcall static void
 846 ntoskrnl_init_nplookaside(npaged_lookaside_list *lookaside,
 847                           lookaside_alloc_func *allocfunc,
 848                           lookaside_free_func *freefunc,
 849                           uint32_t flags, size_t size,
 850                           uint32_t tag, uint16_t depth)
 851 {
 852         bzero((char *)lookaside, sizeof(npaged_lookaside_list));
 853
 854         if (size < sizeof(slist_entry))
 855                 lookaside->nll_l.gl_size = sizeof(slist_entry);
 856         else
 857                 lookaside->nll_l.gl_size = size;
 858         lookaside->nll_l.gl_tag = tag;
 859         if (allocfunc == NULL)
 860                 lookaside->nll_l.gl_allocfunc = ntoskrnl_allocfunc;
 861         else
 862                 lookaside->nll_l.gl_allocfunc = allocfunc;
 863
 864         if (freefunc == NULL)
 865                 lookaside->nll_l.gl_freefunc = ntoskrnl_freefunc;
 866         else
 867                 lookaside->nll_l.gl_freefunc = freefunc;
 868
 869         ntoskrnl_init_lock(&lookaside->nll_obsoletelock);
 870
 871         lookaside->nll_l.gl_depth = LOOKASIDE_DEPTH;
 872         lookaside->nll_l.gl_maxdepth = LOOKASIDE_DEPTH;
 873
 874         return;
 875 }
 876
 877 __stdcall static void
 878 ntoskrnl_delete_nplookaside(npaged_lookaside_list *lookaside)
 879 {
 880         void                    *buf;
 881         __stdcall void          (*freefunc)(void *);
 882
 883         freefunc = lookaside->nll_l.gl_freefunc;
 884         while((buf = ntoskrnl_popsl(&lookaside->nll_l.gl_listhead)) != NULL)
 885                 freefunc(buf);
 886
 887         return;
 888 }
 889
 890 /*
 891  * Note: the interlocked slist push and pop routines are
 892  * declared to be _fastcall in Windows. gcc 3.4 is supposed
 893  * to have support for this calling convention, however we
 894  * don't have that version available yet, so we kludge things
 895  * up using some inline assembly.
 896  */
 897
 898 __stdcall __regcall static slist_entry *
 899 ntoskrnl_push_slist(REGARGS2(slist_header *head, slist_entry *entry))
 900 {
 901         slist_entry             *oldhead;
 902
 903         oldhead = (slist_entry *)FASTCALL3(ntoskrnl_push_slist_ex,
 904             head, entry, &ntoskrnl_global);
 905
 906         return(oldhead);
 907 }
 908
 909 __stdcall __regcall static slist_entry *
 910 ntoskrnl_pop_slist(REGARGS1(slist_header *head))
 911 {
 912         slist_entry             *first;
 913
 914         first = (slist_entry *)FASTCALL2(ntoskrnl_pop_slist_ex,
 915             head, &ntoskrnl_global);
 916
 917         return(first);
 918 }
 919
 920 __stdcall __regcall static slist_entry *
 921 ntoskrnl_push_slist_ex(REGARGS2(slist_header *head, slist_entry *entry), kspin_lock *lock)
 922 {
 923         slist_entry             *oldhead;
 924         uint8_t                 irql;
 925
 926         irql = FASTCALL2(hal_lock, lock, DISPATCH_LEVEL);
 927         oldhead = ntoskrnl_pushsl(head, entry);
 928         FASTCALL2(hal_unlock, lock, irql);
 929
 930         return(oldhead);
 931 }
 932
 933 __stdcall __regcall static slist_entry *
 934 ntoskrnl_pop_slist_ex(REGARGS2(slist_header *head, kspin_lock *lock))
 935 {
 936         slist_entry             *first;
 937         uint8_t                 irql;
 938
 939         irql = FASTCALL2(hal_lock, lock, DISPATCH_LEVEL);
 940         first = ntoskrnl_popsl(head);
 941         FASTCALL2(hal_unlock, lock, irql);
 942
 943         return(first);
 944 }
 945
 946 __stdcall __regcall void
 947 ntoskrnl_lock_dpc(REGARGS1(kspin_lock *lock))
 948 {
 949         while (atomic_poll_acquire_int((volatile u_int *)lock) == 0)
 950                 /* sit and spin */;
 951 }
 952
 953 __stdcall __regcall void
 954 ntoskrnl_unlock_dpc(REGARGS1(kspin_lock *lock))
 955 {
 956         atomic_poll_release_int((volatile u_int *)lock);
 957 }
 958
 959 __stdcall __regcall static uint32_t
 960 ntoskrnl_interlock_inc(REGARGS1(volatile uint32_t *addend))
 961 {
 962         atomic_add_long((volatile u_long *)addend, 1);
 963         return(*addend);
 964 }
 965
 966 __stdcall __regcall static uint32_t
 967 ntoskrnl_interlock_dec(REGARGS1(volatile uint32_t *addend))
 968 {
 969         atomic_subtract_long((volatile u_long *)addend, 1);
 970         return(*addend);
 971 }
 972
 973 __stdcall __regcall static void
 974 ntoskrnl_interlock_addstat(REGARGS2(uint64_t *addend, uint32_t inc))
 975 {
 976         uint8_t                 irql;
 977
 978         irql = FASTCALL2(hal_lock, &ntoskrnl_global, DISPATCH_LEVEL);
 979         *addend += inc;
 980         FASTCALL2(hal_unlock, &ntoskrnl_global, irql);
 981
 982         return;
 983 };
 984
 985 __stdcall static void
 986 ntoskrnl_freemdl(ndis_buffer *mdl)
 987 {
 988         ndis_buffer             *head;
 989
 990         if (mdl == NULL || mdl->nb_process == NULL)
 991                 return;
 992
 993         head = mdl->nb_process;
 994
 995         if (head->nb_flags != 0x1)
 996                 return;
 997
 998         mdl->nb_next = head->nb_next;
 999         head->nb_next = mdl;
1000
1001         /* Decrement count of busy buffers. */
1002
1003         head->nb_bytecount--;
1004
1005         /*
1006          * If the pool has been marked for deletion and there are
1007          * no more buffers outstanding, nuke the pool.
1008          */
1009
1010         if (head->nb_byteoffset && head->nb_bytecount == 0)
1011                 kfree(head, M_DEVBUF);
1012
1013         return;
1014 }
1015
1016 __stdcall static uint32_t
1017 ntoskrnl_sizeofmdl(void *vaddr, size_t len)
1018 {
1019         uint32_t                l;
1020
1021         l = sizeof(struct ndis_buffer) +
1022             (sizeof(uint32_t) * SPAN_PAGES(vaddr, len));
1023
1024         return(l);
1025 }
1026
1027 __stdcall static void
1028 ntoskrnl_build_npaged_mdl(ndis_buffer *mdl)
1029 {
1030         mdl->nb_mappedsystemva = (char *)mdl->nb_startva + mdl->nb_byteoffset;
1031         return;
1032 }
1033
1034 __stdcall static void *
1035 ntoskrnl_mmaplockedpages(ndis_buffer *buf, uint8_t accessmode)
1036 {
1037         return(MDL_VA(buf));
1038 }
1039
1040 __stdcall static void *
1041 ntoskrnl_mmaplockedpages_cache(ndis_buffer *buf, uint8_t accessmode,
1042                                uint32_t cachetype, void *vaddr,
1043                                uint32_t bugcheck, uint32_t prio)
1044 {
1045         return(MDL_VA(buf));
1046 }
1047
1048 __stdcall static void
1049 ntoskrnl_munmaplockedpages(void *vaddr, ndis_buffer *buf)
1050 {
1051         return;
1052 }
1053
1054 /*
1055  * The KeInitializeSpinLock(), KefAcquireSpinLockAtDpcLevel()
1056  * and KefReleaseSpinLockFromDpcLevel() appear to be analagous
1057  * to crit_enter()/crit_exit() in their use. We can't create a new mutex
1058  * lock here because there is no complimentary KeFreeSpinLock()
1059  * function. Instead, we grab a mutex from the mutex pool.
1060  */
1061 __stdcall static void
1062 ntoskrnl_init_lock(kspin_lock *lock)
1063 {
1064         *lock = 0;
1065
1066         return;
1067 }
1068
1069 __stdcall static size_t
1070 ntoskrnl_memcmp(const void *s1, const void *s2, size_t len)
1071 {
1072         size_t                  i, total = 0;
1073         uint8_t                 *m1, *m2;
1074
1075         m1 = __DECONST(char *, s1);
1076         m2 = __DECONST(char *, s2);
1077
1078         for (i = 0; i < len; i++) {
1079                 if (m1[i] == m2[i])
1080                         total++;
1081         }
1082         return(total);
1083 }
1084
1085 __stdcall static void
1086 ntoskrnl_init_ansi_string(ndis_ansi_string *dst, char *src)
1087 {
1088         ndis_ansi_string        *a;
1089
1090         a = dst;
1091         if (a == NULL)
1092                 return;
1093         if (src == NULL) {
1094                 a->nas_len = a->nas_maxlen = 0;
1095                 a->nas_buf = NULL;
1096         } else {
1097                 a->nas_buf = src;
1098                 a->nas_len = a->nas_maxlen = strlen(src);
1099         }
1100
1101         return;
1102 }
1103
1104 __stdcall static void
1105 ntoskrnl_init_unicode_string(ndis_unicode_string *dst, uint16_t *src)
1106 {
1107         ndis_unicode_string     *u;
1108         int                     i;
1109
1110         u = dst;
1111         if (u == NULL)
1112                 return;
1113         if (src == NULL) {
1114                 u->nus_len = u->nus_maxlen = 0;
1115                 u->nus_buf = NULL;
1116         } else {
1117                 i = 0;
1118                 while(src[i] != 0)
1119                         i++;
1120                 u->nus_buf = src;
1121                 u->nus_len = u->nus_maxlen = i * 2;
1122         }
1123
1124         return;
1125 }
1126
1127 __stdcall ndis_status
1128 ntoskrnl_unicode_to_int(ndis_unicode_string *ustr, uint32_t base,
1129                         uint32_t *val)
1130 {
1131         uint16_t                *uchr;
1132         int                     len, neg = 0;
1133         char                    abuf[64];
1134         char                    *astr;
1135
1136         uchr = ustr->nus_buf;
1137         len = ustr->nus_len;
1138         bzero(abuf, sizeof(abuf));
1139
1140         if ((char)((*uchr) & 0xFF) == '-') {
1141                 neg = 1;
1142                 uchr++;
1143                 len -= 2;
1144         } else if ((char)((*uchr) & 0xFF) == '+') {
1145                 neg = 0;
1146                 uchr++;
1147                 len -= 2;
1148         }
1149
1150         if (base == 0) {
1151                 if ((char)((*uchr) & 0xFF) == 'b') {
1152                         base = 2;
1153                         uchr++;
1154                         len -= 2;
1155                 } else if ((char)((*uchr) & 0xFF) == 'o') {
1156                         base = 8;
1157                         uchr++;
1158                         len -= 2;
1159                 } else if ((char)((*uchr) & 0xFF) == 'x') {
1160                         base = 16;
1161                         uchr++;
1162                         len -= 2;
1163                 } else
1164                         base = 10;
1165         }
1166
1167         astr = abuf;
1168         if (neg) {
1169                 strcpy(astr, "-");
1170                 astr++;
1171         }
1172
1173         ndis_unicode_to_ascii(uchr, len, &astr);
1174         *val = strtoul(abuf, NULL, base);
1175
1176         return(NDIS_STATUS_SUCCESS);
1177 }
1178
1179 __stdcall static void
1180 ntoskrnl_free_unicode_string(ndis_unicode_string *ustr)
1181 {
1182         if (ustr->nus_buf == NULL)
1183                 return;
1184         kfree(ustr->nus_buf, M_DEVBUF);
1185         ustr->nus_buf = NULL;
1186         return;
1187 }
1188
1189 __stdcall static void
1190 ntoskrnl_free_ansi_string(ndis_ansi_string *astr)
1191 {
1192         if (astr->nas_buf == NULL)
1193                 return;
1194         kfree(astr->nas_buf, M_DEVBUF);
1195         astr->nas_buf = NULL;
1196         return;
1197 }
1198
1199 static int
1200 atoi(const char *str)
1201 {
1202         return (int)strtol(str, NULL, 10);
1203 }
1204
1205 static long
1206 atol(const char *str)
1207 {
1208         return strtol(str, NULL, 10);
1209 }
1210
1211 static int
1212 rand(void)
1213 {
1214         struct timeval          tv;
1215
1216         microtime(&tv);
1217         skrandom(tv.tv_usec);
1218         return((int)krandom());
1219 }
1220
1221 __stdcall static uint8_t
1222 ntoskrnl_wdmver(uint8_t major, uint8_t minor)
1223 {
1224         if (major == WDM_MAJOR && minor == WDM_MINOR_WINXP)
1225                 return(TRUE);
1226         return(FALSE);
1227 }
1228
1229 __stdcall static ndis_status
1230 ntoskrnl_devprop(device_object *devobj, uint32_t regprop, uint32_t buflen,
1231                  void *prop, uint32_t *reslen)
1232 {
1233         ndis_miniport_block     *block;
1234
1235         block = devobj->do_rsvd;
1236
1237         switch (regprop) {
1238         case DEVPROP_DRIVER_KEYNAME:
1239                 ndis_ascii_to_unicode(__DECONST(char *,
1240                     device_get_nameunit(block->nmb_dev)), (uint16_t **)&prop);
1241                 *reslen = strlen(device_get_nameunit(block->nmb_dev)) * 2;
1242                 break;
1243         default:
1244                 return(STATUS_INVALID_PARAMETER_2);
1245                 break;
1246         }
1247
1248         return(STATUS_SUCCESS);
1249 }
1250
1251 __stdcall static void
1252 ntoskrnl_init_mutex(kmutant *kmutex, uint32_t level)
1253 {
1254         INIT_LIST_HEAD((&kmutex->km_header.dh_waitlisthead));
1255         kmutex->km_abandoned = FALSE;
1256         kmutex->km_apcdisable = 1;
1257         kmutex->km_header.dh_sigstate = TRUE;
1258         kmutex->km_header.dh_type = EVENT_TYPE_SYNC;
1259         kmutex->km_header.dh_size = OTYPE_MUTEX;
1260         kmutex->km_acquirecnt = 0;
1261         kmutex->km_ownerthread = NULL;
1262         return;
1263 }
1264
1265 __stdcall static uint32_t
1266 ntoskrnl_release_mutex(kmutant *kmutex, uint8_t kwait)
1267 {
1268         lwkt_gettoken(&ntoskrnl_dispatchtoken);
1269         if (kmutex->km_ownerthread != curthread->td_proc) {
1270                 lwkt_reltoken(&ntoskrnl_dispatchtoken);
1271                 return(STATUS_MUTANT_NOT_OWNED);
1272         }
1273         kmutex->km_acquirecnt--;
1274         if (kmutex->km_acquirecnt == 0) {
1275                 kmutex->km_ownerthread = NULL;
1276                 lwkt_reltoken(&ntoskrnl_dispatchtoken);
1277                 ntoskrnl_wakeup(&kmutex->km_header);
1278         } else {
1279                 lwkt_reltoken(&ntoskrnl_dispatchtoken);
1280         }
1281
1282         return(kmutex->km_acquirecnt);
1283 }
1284
1285 __stdcall static uint32_t
1286 ntoskrnl_read_mutex(kmutant *kmutex)
1287 {
1288         return(kmutex->km_header.dh_sigstate);
1289 }
1290
1291 __stdcall void
1292 ntoskrnl_init_event(nt_kevent *kevent, uint32_t type, uint8_t state)
1293 {
1294         INIT_LIST_HEAD((&kevent->k_header.dh_waitlisthead));
1295         kevent->k_header.dh_sigstate = state;
1296         kevent->k_header.dh_type = type;
1297         kevent->k_header.dh_size = OTYPE_EVENT;
1298         return;
1299 }
1300
1301 __stdcall uint32_t
1302 ntoskrnl_reset_event(nt_kevent *kevent)
1303 {
1304         uint32_t                prevstate;
1305
1306         lwkt_gettoken(&ntoskrnl_dispatchtoken);
1307         prevstate = kevent->k_header.dh_sigstate;
1308         kevent->k_header.dh_sigstate = FALSE;
1309         lwkt_reltoken(&ntoskrnl_dispatchtoken);
1310
1311         return(prevstate);
1312 }
1313
1314 __stdcall uint32_t
1315 ntoskrnl_set_event(nt_kevent *kevent, uint32_t increment, uint8_t kwait)
1316 {
1317         uint32_t                prevstate;
1318
1319         prevstate = kevent->k_header.dh_sigstate;
1320         ntoskrnl_wakeup(&kevent->k_header);
1321
1322         return(prevstate);
1323 }
1324
1325 __stdcall void
1326 ntoskrnl_clear_event(nt_kevent *kevent)
1327 {
1328         kevent->k_header.dh_sigstate = FALSE;
1329         return;
1330 }
1331
1332 __stdcall uint32_t
1333 ntoskrnl_read_event(nt_kevent *kevent)
1334 {
1335         return(kevent->k_header.dh_sigstate);
1336 }
1337
1338 __stdcall static ndis_status
1339 ntoskrnl_objref(ndis_handle handle, uint32_t reqaccess, void *otype,
1340                 uint8_t accessmode, void **object, void **handleinfo)
1341 {
1342         nt_objref               *nr;
1343
1344         nr = kmalloc(sizeof(nt_objref), M_DEVBUF, M_WAITOK|M_ZERO);
1345
1346         INIT_LIST_HEAD((&nr->no_dh.dh_waitlisthead));
1347         nr->no_obj = handle;
1348         nr->no_dh.dh_size = OTYPE_THREAD;
1349         TAILQ_INSERT_TAIL(&ntoskrnl_reflist, nr, link);
1350         *object = nr;
1351
1352         return(NDIS_STATUS_SUCCESS);
1353 }
1354
1355 __stdcall __regcall static void
1356 ntoskrnl_objderef(REGARGS1(void *object))
1357 {
1358         nt_objref               *nr;
1359
1360         nr = object;
1361         TAILQ_REMOVE(&ntoskrnl_reflist, nr, link);
1362         kfree(nr, M_DEVBUF);
1363
1364         return;
1365 }
1366
1367 __stdcall static uint32_t
1368 ntoskrnl_zwclose(ndis_handle handle)
1369 {
1370         return(STATUS_SUCCESS);
1371 }
1372
1373 /*
1374  * This is here just in case the thread returns without calling
1375  * PsTerminateSystemThread().
1376  */
1377 static void
1378 ntoskrnl_thrfunc(void *arg)
1379 {
1380         thread_context          *thrctx;
1381         __stdcall uint32_t (*tfunc)(void *);
1382         void                    *tctx;
1383         uint32_t                rval;
1384
1385         thrctx = arg;
1386         tfunc = thrctx->tc_thrfunc;
1387         tctx = thrctx->tc_thrctx;
1388         kfree(thrctx, M_TEMP);
1389
1390         rval = tfunc(tctx);
1391
1392         ntoskrnl_thread_exit(rval);
1393         return; /* notreached */
1394 }
1395
1396 __stdcall static ndis_status
1397 ntoskrnl_create_thread(ndis_handle *handle, uint32_t reqaccess,
1398                        void *objattrs, ndis_handle phandle,
1399                        void *clientid, void *thrfunc, void *thrctx)
1400 {
1401         int                     error;
1402         char                    tname[128];
1403         thread_context          *tc;
1404         thread_t                td;
1405
1406         tc = kmalloc(sizeof(thread_context), M_TEMP, M_WAITOK);
1407
1408         tc->tc_thrctx = thrctx;
1409         tc->tc_thrfunc = thrfunc;
1410
1411         ksprintf(tname, "windows kthread %d", ntoskrnl_kth);
1412         error = kthread_create_stk(ntoskrnl_thrfunc, tc, &td,
1413             NDIS_KSTACK_PAGES * PAGE_SIZE, tname);
1414         *handle = td;
1415
1416         ntoskrnl_kth++;
1417
1418         return(error);
1419 }
1420
1421 /*
1422  * In Windows, the exit of a thread is an event that you're allowed
1423  * to wait on, assuming you've obtained a reference to the thread using
1424  * ObReferenceObjectByHandle(). Unfortunately, the only way we can
1425  * simulate this behavior is to register each thread we create in a
1426  * reference list, and if someone holds a reference to us, we poke
1427  * them.
1428  */
1429 __stdcall static ndis_status
1430 ntoskrnl_thread_exit(ndis_status status)
1431 {
1432         struct nt_objref        *nr;
1433
1434         TAILQ_FOREACH(nr, &ntoskrnl_reflist, link) {
1435                 if (nr->no_obj != curthread)
1436                         continue;
1437                 ntoskrnl_wakeup(&nr->no_dh);
1438                 break;
1439         }
1440
1441         ntoskrnl_kth--;
1442
1443         kthread_exit();
1444         return(0);      /* notreached */
1445 }
1446
1447 static uint32_t
1448 ntoskrnl_dbgprint(char *fmt, ...)
1449 {
1450         __va_list                       ap;
1451
1452         if (bootverbose) {
1453                 __va_start(ap, fmt);
1454                 kvprintf(fmt, ap);
1455         }
1456
1457         return(STATUS_SUCCESS);
1458 }
1459
1460 __stdcall static void
1461 ntoskrnl_debugger(void)
1462 {
1463
1464 #if __FreeBSD_version < 502113
1465         Debugger("ntoskrnl_debugger(): breakpoint");
1466 #else
1467         kdb_enter("ntoskrnl_debugger(): breakpoint");
1468 #endif
1469 }
1470
1471 static void
1472 ntoskrnl_timercall(void *arg)
1473 {
1474         ktimer                  *timer;
1475
1476         timer = arg;
1477
1478         timer->k_header.dh_inserted = FALSE;
1479
1480         /*
1481          * If this is a periodic timer, re-arm it
1482          * so it will fire again. We do this before
1483          * calling any deferred procedure calls because
1484          * it's possible the DPC might cancel the timer,
1485          * in which case it would be wrong for us to
1486          * re-arm it again afterwards.
1487          */
1488
1489         if (timer->k_period) {
1490                 timer->k_header.dh_inserted = TRUE;
1491                 callout_reset(timer->k_handle, 1 + timer->k_period * hz / 1000,
1492                               ntoskrnl_timercall, timer);
1493         } else {
1494                 callout_deactivate(timer->k_handle);
1495                 kfree(timer->k_handle, M_NDIS);
1496                 timer->k_handle = NULL;
1497         }
1498
1499         if (timer->k_dpc != NULL)
1500                 ntoskrnl_queue_dpc(timer->k_dpc, NULL, NULL);
1501
1502         ntoskrnl_wakeup(&timer->k_header);
1503 }
1504
1505 __stdcall void
1506 ntoskrnl_init_timer(ktimer *timer)
1507 {
1508         if (timer == NULL)
1509                 return;
1510
1511         ntoskrnl_init_timer_ex(timer,  EVENT_TYPE_NOTIFY);
1512 }
1513
1514 __stdcall void
1515 ntoskrnl_init_timer_ex(ktimer *timer, uint32_t type)
1516 {
1517         if (timer == NULL)
1518                 return;
1519
1520         INIT_LIST_HEAD((&timer->k_header.dh_waitlisthead));
1521         timer->k_header.dh_sigstate = FALSE;
1522         timer->k_header.dh_inserted = FALSE;
1523         timer->k_header.dh_type = type;
1524         timer->k_header.dh_size = OTYPE_TIMER;
1525         timer->k_handle = NULL;
1526
1527         return;
1528 }
1529
1530 /*
1531  * This is a wrapper for Windows deferred procedure calls that
1532  * have been placed on an NDIS thread work queue. We need it
1533  * since the DPC could be a _stdcall function. Also, as far as
1534  * I can tell, defered procedure calls must run at DISPATCH_LEVEL.
1535  */
1536 static void
1537 ntoskrnl_run_dpc(void *arg)
1538 {
1539         kdpc_func               dpcfunc;
1540         kdpc                    *dpc;
1541         uint8_t                 irql;
1542
1543         dpc = arg;
1544         dpcfunc = (kdpc_func)dpc->k_deferedfunc;
1545         irql = FASTCALL1(hal_raise_irql, DISPATCH_LEVEL);
1546         dpcfunc(dpc, dpc->k_deferredctx, dpc->k_sysarg1, dpc->k_sysarg2);
1547         FASTCALL1(hal_lower_irql, irql);
1548
1549         return;
1550 }
1551
1552 __stdcall void
1553 ntoskrnl_init_dpc(kdpc *dpc, void *dpcfunc, void *dpcctx)
1554 {
1555         if (dpc == NULL)
1556                 return;
1557
1558         dpc->k_deferedfunc = dpcfunc;
1559         dpc->k_deferredctx = dpcctx;
1560
1561         return;
1562 }
1563
1564 __stdcall uint8_t
1565 ntoskrnl_queue_dpc(kdpc *dpc, void *sysarg1, void *sysarg2)
1566 {
1567         dpc->k_sysarg1 = sysarg1;
1568         dpc->k_sysarg2 = sysarg2;
1569         if (ndis_sched(ntoskrnl_run_dpc, dpc, NDIS_SWI))
1570                 return(FALSE);
1571
1572         return(TRUE);
1573 }
1574
1575 __stdcall uint8_t
1576 ntoskrnl_dequeue_dpc(kdpc *dpc)
1577 {
1578         if (ndis_unsched(ntoskrnl_run_dpc, dpc, NDIS_SWI))
1579                 return(FALSE);
1580
1581         return(TRUE);
1582 }
1583
1584 __stdcall uint8_t
1585 ntoskrnl_set_timer_ex(ktimer *timer, int64_t duetime, uint32_t period,
1586                       kdpc *dpc)
1587 {
1588         struct timeval          tv;
1589         uint64_t                curtime;
1590         uint8_t                 pending;
1591         int                     ticks;
1592
1593         if (timer == NULL)
1594                 return(FALSE);
1595
1596         if (timer->k_header.dh_inserted == TRUE) {
1597                 if (timer->k_handle != NULL)
1598                         callout_stop(timer->k_handle);
1599                 timer->k_header.dh_inserted = FALSE;
1600                 pending = TRUE;
1601         } else
1602                 pending = FALSE;
1603
1604         timer->k_duetime = duetime;
1605         timer->k_period = period;
1606         timer->k_header.dh_sigstate = FALSE;
1607         timer->k_dpc = dpc;
1608
1609         if (duetime < 0) {
1610                 tv.tv_sec = - (duetime) / 10000000;
1611                 tv.tv_usec = (- (duetime) / 10) -
1612                     (tv.tv_sec * 1000000);
1613         } else {
1614                 ntoskrnl_time(&curtime);
1615                 if (duetime < curtime)
1616                         tv.tv_sec = tv.tv_usec = 0;
1617                 else {
1618                         tv.tv_sec = ((duetime) - curtime) / 10000000;
1619                         tv.tv_usec = ((duetime) - curtime) / 10 -
1620                             (tv.tv_sec * 1000000);
1621                 }
1622         }
1623
1624         ticks = 1 + tv.tv_sec * hz + tv.tv_usec * hz / 1000000;
1625         timer->k_header.dh_inserted = TRUE;
1626         if (timer->k_handle == NULL) {
1627                 timer->k_handle = kmalloc(sizeof(struct callout), M_NDIS,
1628                                          M_INTWAIT);
1629                 callout_init(timer->k_handle);
1630         }
1631         callout_reset(timer->k_handle, ticks, ntoskrnl_timercall, timer);
1632
1633         return(pending);
1634 }
1635
1636 __stdcall uint8_t
1637 ntoskrnl_set_timer(ktimer *timer, int64_t duetime, kdpc *dpc)
1638 {
1639         return (ntoskrnl_set_timer_ex(timer, duetime, 0, dpc));
1640 }
1641
1642 __stdcall uint8_t
1643 ntoskrnl_cancel_timer(ktimer *timer)
1644 {
1645         uint8_t                 pending;
1646
1647         if (timer == NULL)
1648                 return(FALSE);
1649
1650         if (timer->k_header.dh_inserted == TRUE) {
1651                 if (timer->k_handle != NULL) {
1652                         callout_stop(timer->k_handle);
1653                         kfree(timer->k_handle, M_NDIS);
1654                         timer->k_handle = NULL;
1655                 }
1656                 if (timer->k_dpc != NULL)
1657                         ntoskrnl_dequeue_dpc(timer->k_dpc);
1658                 pending = TRUE;
1659         } else
1660                 pending = FALSE;
1661
1662
1663         return(pending);
1664 }
1665
1666 __stdcall uint8_t
1667 ntoskrnl_read_timer(ktimer *timer)
1668 {
1669         return(timer->k_header.dh_sigstate);
1670 }
1671
1672 __stdcall static void
1673 dummy(void)
1674 {
1675         kprintf ("ntoskrnl dummy called...\n");
1676         return;
1677 }
1678
1679
1680 image_patch_table ntoskrnl_functbl[] = {
1681         { "RtlCompareMemory",           (FUNC)ntoskrnl_memcmp },
1682         { "RtlEqualUnicodeString",      (FUNC)ntoskrnl_unicode_equal },
1683         { "RtlCopyUnicodeString",       (FUNC)ntoskrnl_unicode_copy },
1684         { "RtlUnicodeStringToAnsiString", (FUNC)ntoskrnl_unicode_to_ansi },
1685         { "RtlAnsiStringToUnicodeString", (FUNC)ntoskrnl_ansi_to_unicode },
1686         { "RtlInitAnsiString",          (FUNC)ntoskrnl_init_ansi_string },
1687         { "RtlInitUnicodeString",       (FUNC)ntoskrnl_init_unicode_string },
1688         { "RtlFreeAnsiString",          (FUNC)ntoskrnl_free_ansi_string },
1689         { "RtlFreeUnicodeString",       (FUNC)ntoskrnl_free_unicode_string },
1690         { "RtlUnicodeStringToInteger",  (FUNC)ntoskrnl_unicode_to_int },
1691         { "sprintf",                    (FUNC)ksprintf },
1692         { "vsprintf",                   (FUNC)kvsprintf },
1693         { "_snprintf",                  (FUNC)ksnprintf },
1694         { "_vsnprintf",                 (FUNC)kvsnprintf },
1695         { "DbgPrint",                   (FUNC)ntoskrnl_dbgprint },
1696         { "DbgBreakPoint",              (FUNC)ntoskrnl_debugger },
1697         { "strncmp",                    (FUNC)strncmp },
1698         { "strcmp",                     (FUNC)strcmp },
1699         { "strncpy",                    (FUNC)strncpy },
1700         { "strcpy",                     (FUNC)strcpy },
1701         { "strlen",                     (FUNC)strlen },
1702         { "memcpy",                     (FUNC)memcpy },
1703         { "memmove",                    (FUNC)memcpy },
1704         { "memset",                     (FUNC)memset },
1705         { "IofCallDriver",              (FUNC)ntoskrnl_iofcalldriver },
1706         { "IofCompleteRequest",         (FUNC)ntoskrnl_iofcompletereq },
1707         { "IoBuildSynchronousFsdRequest", (FUNC)ntoskrnl_iobuildsynchfsdreq },
1708         { "KeWaitForSingleObject",      (FUNC)ntoskrnl_waitforobj },
1709         { "KeWaitForMultipleObjects",   (FUNC)ntoskrnl_waitforobjs },
1710         { "_allmul",                    (FUNC)_allmul },
1711         { "_alldiv",                    (FUNC)_alldiv },
1712         { "_allrem",                    (FUNC)_allrem },
1713         { "_allshr",                    (FUNC)_allshr },
1714         { "_allshl",                    (FUNC)_allshl },
1715         { "_aullmul",                   (FUNC)_aullmul },
1716         { "_aulldiv",                   (FUNC)_aulldiv },
1717         { "_aullrem",                   (FUNC)_aullrem },
1718         { "_aullshr",                   (FUNC)_aullshr },
1719         { "_aullshl",                   (FUNC)_aullshl },
1720         { "atoi",                       (FUNC)atoi },
1721         { "atol",                       (FUNC)atol },
1722         { "rand",                       (FUNC)rand },
1723         { "WRITE_REGISTER_USHORT",      (FUNC)ntoskrnl_writereg_ushort },
1724         { "READ_REGISTER_USHORT",       (FUNC)ntoskrnl_readreg_ushort },
1725         { "WRITE_REGISTER_ULONG",       (FUNC)ntoskrnl_writereg_ulong },
1726         { "READ_REGISTER_ULONG",        (FUNC)ntoskrnl_readreg_ulong },
1727         { "READ_REGISTER_UCHAR",        (FUNC)ntoskrnl_readreg_uchar },
1728         { "WRITE_REGISTER_UCHAR",       (FUNC)ntoskrnl_writereg_uchar },
1729         { "ExInitializePagedLookasideList", (FUNC)ntoskrnl_init_lookaside },
1730         { "ExDeletePagedLookasideList", (FUNC)ntoskrnl_delete_lookaside },
1731         { "ExInitializeNPagedLookasideList", (FUNC)ntoskrnl_init_nplookaside },
1732         { "ExDeleteNPagedLookasideList", (FUNC)ntoskrnl_delete_nplookaside },
1733         { "InterlockedPopEntrySList",   (FUNC)ntoskrnl_pop_slist },
1734         { "InterlockedPushEntrySList",  (FUNC)ntoskrnl_push_slist },
1735         { "ExInterlockedPopEntrySList", (FUNC)ntoskrnl_pop_slist_ex },
1736         { "ExInterlockedPushEntrySList",(FUNC)ntoskrnl_push_slist_ex },
1737         { "KefAcquireSpinLockAtDpcLevel", (FUNC)ntoskrnl_lock_dpc },
1738         { "KefReleaseSpinLockFromDpcLevel", (FUNC)ntoskrnl_unlock_dpc },
1739         { "InterlockedIncrement",       (FUNC)ntoskrnl_interlock_inc },
1740         { "InterlockedDecrement",       (FUNC)ntoskrnl_interlock_dec },
1741         { "ExInterlockedAddLargeStatistic",
1742                                         (FUNC)ntoskrnl_interlock_addstat },
1743         { "IoFreeMdl",                  (FUNC)ntoskrnl_freemdl },
1744         { "MmSizeOfMdl",                (FUNC)ntoskrnl_sizeofmdl },
1745         { "MmMapLockedPages",           (FUNC)ntoskrnl_mmaplockedpages },
1746         { "MmMapLockedPagesSpecifyCache",
1747                                         (FUNC)ntoskrnl_mmaplockedpages_cache },
1748         { "MmUnmapLockedPages",         (FUNC)ntoskrnl_munmaplockedpages },
1749         { "MmBuildMdlForNonPagedPool",  (FUNC)ntoskrnl_build_npaged_mdl },
1750         { "KeInitializeSpinLock",       (FUNC)ntoskrnl_init_lock },
1751         { "IoIsWdmVersionAvailable",    (FUNC)ntoskrnl_wdmver },
1752         { "IoGetDeviceProperty",        (FUNC)ntoskrnl_devprop },
1753         { "KeInitializeMutex",          (FUNC)ntoskrnl_init_mutex },
1754         { "KeReleaseMutex",             (FUNC)ntoskrnl_release_mutex },
1755         { "KeReadStateMutex",           (FUNC)ntoskrnl_read_mutex },
1756         { "KeInitializeEvent",          (FUNC)ntoskrnl_init_event },
1757         { "KeSetEvent",                 (FUNC)ntoskrnl_set_event },
1758         { "KeResetEvent",               (FUNC)ntoskrnl_reset_event },
1759         { "KeClearEvent",               (FUNC)ntoskrnl_clear_event },
1760         { "KeReadStateEvent",           (FUNC)ntoskrnl_read_event },
1761         { "KeInitializeTimer",          (FUNC)ntoskrnl_init_timer },
1762         { "KeInitializeTimerEx",        (FUNC)ntoskrnl_init_timer_ex },
1763         { "KeSetTimer",                 (FUNC)ntoskrnl_set_timer },
1764         { "KeSetTimerEx",               (FUNC)ntoskrnl_set_timer_ex },
1765         { "KeCancelTimer",              (FUNC)ntoskrnl_cancel_timer },
1766         { "KeReadStateTimer",           (FUNC)ntoskrnl_read_timer },
1767         { "KeInitializeDpc",            (FUNC)ntoskrnl_init_dpc },
1768         { "KeInsertQueueDpc",           (FUNC)ntoskrnl_queue_dpc },
1769         { "KeRemoveQueueDpc",           (FUNC)ntoskrnl_dequeue_dpc },
1770         { "ObReferenceObjectByHandle",  (FUNC)ntoskrnl_objref },
1771         { "ObfDereferenceObject",       (FUNC)ntoskrnl_objderef },
1772         { "ZwClose",                    (FUNC)ntoskrnl_zwclose },
1773         { "PsCreateSystemThread",       (FUNC)ntoskrnl_create_thread },
1774         { "PsTerminateSystemThread",    (FUNC)ntoskrnl_thread_exit },
1775
1776         /*
1777          * This last entry is a catch-all for any function we haven't
1778          * implemented yet. The PE import list patching routine will
1779          * use it for any function that doesn't have an explicit match
1780          * in this table.
1781          */
1782
1783         { NULL, (FUNC)dummy },
1784
1785         /* End of list. */
1786
1787         { NULL, NULL },
1788 };