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);
 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         struct lwkt_tokref      tokref;
 313
 314         obj = arg;
 315
 316         lwkt_gettoken(&tokref, &ntoskrnl_dispatchtoken);
 317         obj->dh_sigstate = TRUE;
 318         e = obj->dh_waitlisthead.nle_flink;
 319         while (e != &obj->dh_waitlisthead) {
 320                 w = (wait_block *)e;
 321                 td = w->wb_kthread;
 322                 ndis_thresume(td);
 323                 /*
 324                  * For synchronization objects, only wake up
 325                  * the first waiter.
 326                  */
 327                 if (obj->dh_type == EVENT_TYPE_SYNC)
 328                         break;
 329                 e = e->nle_flink;
 330         }
 331         lwkt_reltoken(&tokref);
 332
 333         return;
 334 }
 335
 336 static void
 337 ntoskrnl_time(uint64_t *tval)
 338 {
 339         struct timespec         ts;
 340
 341         nanotime(&ts);
 342         *tval = (uint64_t)ts.tv_nsec / 100 + (uint64_t)ts.tv_sec * 10000000 +
 343             11644473600LL;
 344
 345         return;
 346 }
 347
 348 /*
 349  * KeWaitForSingleObject() is a tricky beast, because it can be used
 350  * with several different object types: semaphores, timers, events,
 351  * mutexes and threads. Semaphores don't appear very often, but the
 352  * other object types are quite common. KeWaitForSingleObject() is
 353  * what's normally used to acquire a mutex, and it can be used to
 354  * wait for a thread termination.
 355  *
 356  * The Windows NDIS API is implemented in terms of Windows kernel
 357  * primitives, and some of the object manipulation is duplicated in
 358  * NDIS. For example, NDIS has timers and events, which are actually
 359  * Windows kevents and ktimers. Now, you're supposed to only use the
 360  * NDIS variants of these objects within the confines of the NDIS API,
 361  * but there are some naughty developers out there who will use
 362  * KeWaitForSingleObject() on NDIS timer and event objects, so we
 363  * have to support that as well. Conseqently, our NDIS timer and event
 364  * code has to be closely tied into our ntoskrnl timer and event code,
 365  * just as it is in Windows.
 366  *
 367  * KeWaitForSingleObject() may do different things for different kinds
 368  * of objects:
 369  *
 370  * - For events, we check if the event has been signalled. If the
 371  *   event is already in the signalled state, we just return immediately,
 372  *   otherwise we wait for it to be set to the signalled state by someone
 373  *   else calling KeSetEvent(). Events can be either synchronization or
 374  *   notification events.
 375  *
 376  * - For timers, if the timer has already fired and the timer is in
 377  *   the signalled state, we just return, otherwise we wait on the
 378  *   timer. Unlike an event, timers get signalled automatically when
 379  *   they expire rather than someone having to trip them manually.
 380  *   Timers initialized with KeInitializeTimer() are always notification
 381  *   events: KeInitializeTimerEx() lets you initialize a timer as
 382  *   either a notification or synchronization event.
 383  *
 384  * - For mutexes, we try to acquire the mutex and if we can't, we wait
 385  *   on the mutex until it's available and then grab it. When a mutex is
 386  *   released, it enters the signaled state, which wakes up one of the
 387  *   threads waiting to acquire it. Mutexes are always synchronization
 388  *   events.
 389  *
 390  * - For threads, the only thing we do is wait until the thread object
 391  *   enters a signalled state, which occurs when the thread terminates.
 392  *   Threads are always notification events.
 393  *
 394  * A notification event wakes up all threads waiting on an object. A
 395  * synchronization event wakes up just one. Also, a synchronization event
 396  * is auto-clearing, which means we automatically set the event back to
 397  * the non-signalled state once the wakeup is done.
 398  */
 399
 400 __stdcall uint32_t
 401 ntoskrnl_waitforobj(nt_dispatch_header *obj, uint32_t reason,
 402                     uint32_t mode, uint8_t alertable, int64_t *duetime)
 403 {
 404         struct thread           *td = curthread;
 405         kmutant                 *km;
 406         wait_block              w;
 407         struct timeval          tv;
 408         int                     error = 0;
 409         int                     ticks;
 410         uint64_t                curtime;
 411         struct lwkt_tokref      tokref;
 412
 413         if (obj == NULL)
 414                 return(STATUS_INVALID_PARAMETER);
 415
 416         lwkt_gettoken(&tokref, &ntoskrnl_dispatchtoken);
 417
 418         /*
 419          * See if the object is a mutex. If so, and we already own
 420          * it, then just increment the acquisition count and return.
 421          *
 422          * For any other kind of object, see if it's already in the
 423          * signalled state, and if it is, just return. If the object
 424          * is marked as a synchronization event, reset the state to
 425          * unsignalled.
 426          */
 427
 428         if (obj->dh_size == OTYPE_MUTEX) {
 429                 km = (kmutant *)obj;
 430                 if (km->km_ownerthread == NULL ||
 431                     km->km_ownerthread == curthread->td_proc) {
 432                         obj->dh_sigstate = FALSE;
 433                         km->km_acquirecnt++;
 434                         km->km_ownerthread = curthread->td_proc;
 435                         lwkt_reltoken(&tokref);
 436                         return (STATUS_SUCCESS);
 437                 }
 438         } else if (obj->dh_sigstate == TRUE) {
 439                 if (obj->dh_type == EVENT_TYPE_SYNC)
 440                         obj->dh_sigstate = FALSE;
 441                 lwkt_reltoken(&tokref);
 442                 return (STATUS_SUCCESS);
 443         }
 444
 445         w.wb_object = obj;
 446         w.wb_kthread = td;
 447
 448         INSERT_LIST_TAIL((&obj->dh_waitlisthead), (&w.wb_waitlist));
 449
 450         /*
 451          * The timeout value is specified in 100 nanosecond units
 452          * and can be a positive or negative number. If it's positive,
 453          * then the duetime is absolute, and we need to convert it
 454          * to an absolute offset relative to now in order to use it.
 455          * If it's negative, then the duetime is relative and we
 456          * just have to convert the units.
 457          */
 458
 459         if (duetime != NULL) {
 460                 if (*duetime < 0) {
 461                         tv.tv_sec = - (*duetime) / 10000000;
 462                         tv.tv_usec = (- (*duetime) / 10) -
 463                             (tv.tv_sec * 1000000);
 464                 } else {
 465                         ntoskrnl_time(&curtime);
 466                         if (*duetime < curtime)
 467                                 tv.tv_sec = tv.tv_usec = 0;
 468                         else {
 469                                 tv.tv_sec = ((*duetime) - curtime) / 10000000;
 470                                 tv.tv_usec = ((*duetime) - curtime) / 10 -
 471                                     (tv.tv_sec * 1000000);
 472                         }
 473                 }
 474         }
 475
 476         lwkt_reltoken(&tokref);
 477
 478         ticks = 1 + tv.tv_sec * hz + tv.tv_usec * hz / 1000000;
 479         error = ndis_thsuspend(td, duetime == NULL ? 0 : ticks);
 480
 481         lwkt_gettoken(&tokref, &ntoskrnl_dispatchtoken);
 482
 483         /* We timed out. Leave the object alone and return status. */
 484
 485         if (error == EWOULDBLOCK) {
 486                 REMOVE_LIST_ENTRY((&w.wb_waitlist));
 487                 lwkt_reltoken(&tokref);
 488                 return(STATUS_TIMEOUT);
 489         }
 490
 491         /*
 492          * Mutexes are always synchronization objects, which means
 493          * if several threads are waiting to acquire it, only one will
 494          * be woken up. If that one is us, and the mutex is up for grabs,
 495          * grab it.
 496          */
 497
 498         if (obj->dh_size == OTYPE_MUTEX) {
 499                 km = (kmutant *)obj;
 500                 if (km->km_ownerthread == NULL) {
 501                         km->km_ownerthread = curthread->td_proc;
 502                         km->km_acquirecnt++;
 503                 }
 504         }
 505
 506         if (obj->dh_type == EVENT_TYPE_SYNC)
 507                 obj->dh_sigstate = FALSE;
 508         REMOVE_LIST_ENTRY((&w.wb_waitlist));
 509
 510         lwkt_reltoken(&tokref);
 511
 512         return(STATUS_SUCCESS);
 513 }
 514
 515 __stdcall static uint32_t
 516 ntoskrnl_waitforobjs(uint32_t cnt, nt_dispatch_header *obj[],
 517                      uint32_t wtype, uint32_t reason, uint32_t mode,
 518                      uint8_t alertable, int64_t *duetime,
 519                      wait_block *wb_array)
 520 {
 521         struct thread           *td = curthread;
 522         kmutant                 *km;
 523         wait_block              _wb_array[THREAD_WAIT_OBJECTS];
 524         wait_block              *w;
 525         struct timeval          tv;
 526         int                     i, wcnt = 0, widx = 0, error = 0;
 527         uint64_t                curtime;
 528         struct timespec         t1, t2;
 529         struct lwkt_tokref      tokref;
 530
 531         if (cnt > MAX_WAIT_OBJECTS)
 532                 return(STATUS_INVALID_PARAMETER);
 533         if (cnt > THREAD_WAIT_OBJECTS && wb_array == NULL)
 534                 return(STATUS_INVALID_PARAMETER);
 535
 536         lwkt_gettoken(&tokref, &ntoskrnl_dispatchtoken);
 537
 538         if (wb_array == NULL)
 539                 w = &_wb_array[0];
 540         else
 541                 w = wb_array;
 542
 543         tv.tv_sec = 0;          /* fix compiler warning */
 544         tv.tv_usec = 0;         /* fix compiler warning */
 545
 546         /* First pass: see if we can satisfy any waits immediately. */
 547
 548         for (i = 0; i < cnt; i++) {
 549                 if (obj[i]->dh_size == OTYPE_MUTEX) {
 550                         km = (kmutant *)obj[i];
 551                         if (km->km_ownerthread == NULL ||
 552                             km->km_ownerthread == curthread->td_proc) {
 553                                 obj[i]->dh_sigstate = FALSE;
 554                                 km->km_acquirecnt++;
 555                                 km->km_ownerthread = curthread->td_proc;
 556                                 if (wtype == WAITTYPE_ANY) {
 557                                         lwkt_reltoken(&tokref);
 558                                         return (STATUS_WAIT_0 + i);
 559                                 }
 560                         }
 561                 } else if (obj[i]->dh_sigstate == TRUE) {
 562                         if (obj[i]->dh_type == EVENT_TYPE_SYNC)
 563                                 obj[i]->dh_sigstate = FALSE;
 564                         if (wtype == WAITTYPE_ANY) {
 565                                 lwkt_reltoken(&tokref);
 566                                 return (STATUS_WAIT_0 + i);
 567                         }
 568                 }
 569         }
 570
 571         /*
 572          * Second pass: set up wait for anything we can't
 573          * satisfy immediately.
 574          */
 575
 576         for (i = 0; i < cnt; i++) {
 577                 if (obj[i]->dh_sigstate == TRUE)
 578                         continue;
 579                 INSERT_LIST_TAIL((&obj[i]->dh_waitlisthead),
 580                     (&w[i].wb_waitlist));
 581                 w[i].wb_kthread = td;
 582                 w[i].wb_object = obj[i];
 583                 wcnt++;
 584         }
 585
 586         if (duetime) {
 587                 if (*duetime < 0) {
 588                         tv.tv_sec = -*duetime / 10000000;
 589                         tv.tv_usec = (-*duetime / 10) - (tv.tv_sec * 1000000);
 590                 } else {
 591                         ntoskrnl_time(&curtime);
 592                         if (*duetime < curtime) {
 593                                 tv.tv_sec = 0;
 594                                 tv.tv_usec = 0;
 595                         } else {
 596                                 tv.tv_sec = ((*duetime) - curtime) / 10000000;
 597                                 tv.tv_usec = ((*duetime) - curtime) / 10 -
 598                                     (tv.tv_sec * 1000000);
 599                         }
 600                 }
 601         }
 602
 603         while (wcnt) {
 604                 nanotime(&t1);
 605                 lwkt_reltoken(&tokref);
 606
 607                 if (duetime) {
 608                         ticks = 1 + tv.tv_sec * hz + tv.tv_usec * hz / 1000000;
 609                         error = ndis_thsuspend(td, ticks);
 610                 } else {
 611                         error = ndis_thsuspend(td, 0);
 612                 }
 613
 614                 lwkt_gettoken(&tokref, &ntoskrnl_dispatchtoken);
 615                 nanotime(&t2);
 616
 617                 for (i = 0; i < cnt; i++) {
 618                         if (obj[i]->dh_size == OTYPE_MUTEX) {
 619                                 km = (kmutant *)obj;
 620                                 if (km->km_ownerthread == NULL) {
 621                                         km->km_ownerthread =
 622                                             curthread->td_proc;
 623                                         km->km_acquirecnt++;
 624                                 }
 625                         }
 626                         if (obj[i]->dh_sigstate == TRUE) {
 627                                 widx = i;
 628                                 if (obj[i]->dh_type == EVENT_TYPE_SYNC)
 629                                         obj[i]->dh_sigstate = FALSE;
 630                                 REMOVE_LIST_ENTRY((&w[i].wb_waitlist));
 631                                 wcnt--;
 632                         }
 633                 }
 634
 635                 if (error || wtype == WAITTYPE_ANY)
 636                         break;
 637
 638                 if (duetime) {
 639                         tv.tv_sec -= (t2.tv_sec - t1.tv_sec);
 640                         tv.tv_usec -= (t2.tv_nsec - t1.tv_nsec) / 1000;
 641                 }
 642         }
 643
 644         if (wcnt) {
 645                 for (i = 0; i < cnt; i++)
 646                         REMOVE_LIST_ENTRY((&w[i].wb_waitlist));
 647         }
 648
 649         if (error == EWOULDBLOCK) {
 650                 lwkt_reltoken(&tokref);
 651                 return(STATUS_TIMEOUT);
 652         }
 653
 654         if (wtype == WAITTYPE_ANY && wcnt) {
 655                 lwkt_reltoken(&tokref);
 656                 return(STATUS_WAIT_0 + widx);
 657         }
 658
 659         lwkt_reltoken(&tokref);
 660
 661         return(STATUS_SUCCESS);
 662 }
 663
 664 __stdcall static void
 665 ntoskrnl_writereg_ushort(uint16_t *reg, uint16_t val)
 666 {
 667         bus_space_write_2(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg, val);
 668         return;
 669 }
 670
 671 __stdcall static uint16_t
 672 ntoskrnl_readreg_ushort(uint16_t *reg)
 673 {
 674         return(bus_space_read_2(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg));
 675 }
 676
 677 __stdcall static void
 678 ntoskrnl_writereg_ulong(uint32_t *reg, uint32_t val)
 679 {
 680         bus_space_write_4(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg, val);
 681         return;
 682 }
 683
 684 __stdcall static uint32_t
 685 ntoskrnl_readreg_ulong(uint32_t *reg)
 686 {
 687         return(bus_space_read_4(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg));
 688 }
 689
 690 __stdcall static uint8_t
 691 ntoskrnl_readreg_uchar(uint8_t *reg)
 692 {
 693         return(bus_space_read_1(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg));
 694 }
 695
 696 __stdcall static void
 697 ntoskrnl_writereg_uchar(uint8_t *reg, uint8_t val)
 698 {
 699         bus_space_write_1(NDIS_BUS_SPACE_MEM, 0x0, (bus_size_t)reg, val);
 700         return;
 701 }
 702
 703 __stdcall static int64_t
 704 _allmul(int64_t a, int64_t b)
 705 {
 706         return (a * b);
 707 }
 708
 709 __stdcall static int64_t
 710 _alldiv(int64_t a, int64_t b)
 711 {
 712         return (a / b);
 713 }
 714
 715 __stdcall static int64_t
 716 _allrem(int64_t a, int64_t b)
 717 {
 718         return (a % b);
 719 }
 720
 721 __stdcall static uint64_t
 722 _aullmul(uint64_t a, uint64_t b)
 723 {
 724         return (a * b);
 725 }
 726
 727 __stdcall static uint64_t
 728 _aulldiv(uint64_t a, uint64_t b)
 729 {
 730         return (a / b);
 731 }
 732
 733 __stdcall static uint64_t
 734 _aullrem(uint64_t a, uint64_t b)
 735 {
 736         return (a % b);
 737 }
 738
 739 __regparm static int64_t
 740 _allshl(int64_t a, uint8_t b)
 741 {
 742         return (a << b);
 743 }
 744
 745 __regparm static uint64_t
 746 _aullshl(uint64_t a, uint8_t b)
 747 {
 748         return (a << b);
 749 }
 750
 751 __regparm static int64_t
 752 _allshr(int64_t a, uint8_t b)
 753 {
 754         return (a >> b);
 755 }
 756
 757 __regparm static uint64_t
 758 _aullshr(uint64_t a, uint8_t b)
 759 {
 760         return (a >> b);
 761 }
 762
 763 static slist_entry *
 764 ntoskrnl_pushsl(slist_header *head, slist_entry *entry)
 765 {
 766         slist_entry             *oldhead;
 767
 768         oldhead = head->slh_list.slh_next;
 769         entry->sl_next = head->slh_list.slh_next;
 770         head->slh_list.slh_next = entry;
 771         head->slh_list.slh_depth++;
 772         head->slh_list.slh_seq++;
 773
 774         return(oldhead);
 775 }
 776
 777 static slist_entry *
 778 ntoskrnl_popsl(slist_header *head)
 779 {
 780         slist_entry             *first;
 781
 782         first = head->slh_list.slh_next;
 783         if (first != NULL) {
 784                 head->slh_list.slh_next = first->sl_next;
 785                 head->slh_list.slh_depth--;
 786                 head->slh_list.slh_seq++;
 787         }
 788
 789         return(first);
 790 }
 791
 792 __stdcall static void *
 793 ntoskrnl_allocfunc(uint32_t pooltype, size_t size, uint32_t tag)
 794 {
 795         return(kmalloc(size, M_DEVBUF, M_WAITOK));
 796 }
 797
 798 __stdcall static void
 799 ntoskrnl_freefunc(void *buf)
 800 {
 801         kfree(buf, M_DEVBUF);
 802         return;
 803 }
 804
 805 __stdcall static void
 806 ntoskrnl_init_lookaside(paged_lookaside_list *lookaside,
 807                         lookaside_alloc_func *allocfunc,
 808                         lookaside_free_func *freefunc,
 809                         uint32_t flags, size_t size,
 810                         uint32_t tag, uint16_t depth)
 811 {
 812         bzero((char *)lookaside, sizeof(paged_lookaside_list));
 813
 814         if (size < sizeof(slist_entry))
 815                 lookaside->nll_l.gl_size = sizeof(slist_entry);
 816         else
 817                 lookaside->nll_l.gl_size = size;
 818         lookaside->nll_l.gl_tag = tag;
 819         if (allocfunc == NULL)
 820                 lookaside->nll_l.gl_allocfunc = ntoskrnl_allocfunc;
 821         else
 822                 lookaside->nll_l.gl_allocfunc = allocfunc;
 823
 824         if (freefunc == NULL)
 825                 lookaside->nll_l.gl_freefunc = ntoskrnl_freefunc;
 826         else
 827                 lookaside->nll_l.gl_freefunc = freefunc;
 828
 829         ntoskrnl_init_lock(&lookaside->nll_obsoletelock);
 830
 831         lookaside->nll_l.gl_depth = LOOKASIDE_DEPTH;
 832         lookaside->nll_l.gl_maxdepth = LOOKASIDE_DEPTH;
 833
 834         return;
 835 }
 836
 837 __stdcall static void
 838 ntoskrnl_delete_lookaside(paged_lookaside_list *lookaside)
 839 {
 840         void                    *buf;
 841         __stdcall void          (*freefunc)(void *);
 842
 843         freefunc = lookaside->nll_l.gl_freefunc;
 844         while((buf = ntoskrnl_popsl(&lookaside->nll_l.gl_listhead)) != NULL)
 845                 freefunc(buf);
 846
 847         return;
 848 }
 849
 850 __stdcall static void
 851 ntoskrnl_init_nplookaside(npaged_lookaside_list *lookaside,
 852                           lookaside_alloc_func *allocfunc,
 853                           lookaside_free_func *freefunc,
 854                           uint32_t flags, size_t size,
 855                           uint32_t tag, uint16_t depth)
 856 {
 857         bzero((char *)lookaside, sizeof(npaged_lookaside_list));
 858
 859         if (size < sizeof(slist_entry))
 860                 lookaside->nll_l.gl_size = sizeof(slist_entry);
 861         else
 862                 lookaside->nll_l.gl_size = size;
 863         lookaside->nll_l.gl_tag = tag;
 864         if (allocfunc == NULL)
 865                 lookaside->nll_l.gl_allocfunc = ntoskrnl_allocfunc;
 866         else
 867                 lookaside->nll_l.gl_allocfunc = allocfunc;
 868
 869         if (freefunc == NULL)
 870                 lookaside->nll_l.gl_freefunc = ntoskrnl_freefunc;
 871         else
 872                 lookaside->nll_l.gl_freefunc = freefunc;
 873
 874         ntoskrnl_init_lock(&lookaside->nll_obsoletelock);
 875
 876         lookaside->nll_l.gl_depth = LOOKASIDE_DEPTH;
 877         lookaside->nll_l.gl_maxdepth = LOOKASIDE_DEPTH;
 878
 879         return;
 880 }
 881
 882 __stdcall static void
 883 ntoskrnl_delete_nplookaside(npaged_lookaside_list *lookaside)
 884 {
 885         void                    *buf;
 886         __stdcall void          (*freefunc)(void *);
 887
 888         freefunc = lookaside->nll_l.gl_freefunc;
 889         while((buf = ntoskrnl_popsl(&lookaside->nll_l.gl_listhead)) != NULL)
 890                 freefunc(buf);
 891
 892         return;
 893 }
 894
 895 /*
 896  * Note: the interlocked slist push and pop routines are
 897  * declared to be _fastcall in Windows. gcc 3.4 is supposed
 898  * to have support for this calling convention, however we
 899  * don't have that version available yet, so we kludge things
 900  * up using some inline assembly.
 901  */
 902
 903 __stdcall __regcall static slist_entry *
 904 ntoskrnl_push_slist(REGARGS2(slist_header *head, slist_entry *entry))
 905 {
 906         slist_entry             *oldhead;
 907
 908         oldhead = (slist_entry *)FASTCALL3(ntoskrnl_push_slist_ex,
 909             head, entry, &ntoskrnl_global);
 910
 911         return(oldhead);
 912 }
 913
 914 __stdcall __regcall static slist_entry *
 915 ntoskrnl_pop_slist(REGARGS1(slist_header *head))
 916 {
 917         slist_entry             *first;
 918
 919         first = (slist_entry *)FASTCALL2(ntoskrnl_pop_slist_ex,
 920             head, &ntoskrnl_global);
 921
 922         return(first);
 923 }
 924
 925 __stdcall __regcall static slist_entry *
 926 ntoskrnl_push_slist_ex(REGARGS2(slist_header *head, slist_entry *entry), kspin_lock *lock)
 927 {
 928         slist_entry             *oldhead;
 929         uint8_t                 irql;
 930
 931         irql = FASTCALL2(hal_lock, lock, DISPATCH_LEVEL);
 932         oldhead = ntoskrnl_pushsl(head, entry);
 933         FASTCALL2(hal_unlock, lock, irql);
 934
 935         return(oldhead);
 936 }
 937
 938 __stdcall __regcall static slist_entry *
 939 ntoskrnl_pop_slist_ex(REGARGS2(slist_header *head, kspin_lock *lock))
 940 {
 941         slist_entry             *first;
 942         uint8_t                 irql;
 943
 944         irql = FASTCALL2(hal_lock, lock, DISPATCH_LEVEL);
 945         first = ntoskrnl_popsl(head);
 946         FASTCALL2(hal_unlock, lock, irql);
 947
 948         return(first);
 949 }
 950
 951 __stdcall __regcall void
 952 ntoskrnl_lock_dpc(REGARGS1(kspin_lock *lock))
 953 {
 954         while (atomic_poll_acquire_int((volatile u_int *)lock) == 0)
 955                 /* sit and spin */;
 956 }
 957
 958 __stdcall __regcall void
 959 ntoskrnl_unlock_dpc(REGARGS1(kspin_lock *lock))
 960 {
 961         atomic_poll_release_int((volatile u_int *)lock);
 962 }
 963
 964 __stdcall __regcall static uint32_t
 965 ntoskrnl_interlock_inc(REGARGS1(volatile uint32_t *addend))
 966 {
 967         atomic_add_long((volatile u_long *)addend, 1);
 968         return(*addend);
 969 }
 970
 971 __stdcall __regcall static uint32_t
 972 ntoskrnl_interlock_dec(REGARGS1(volatile uint32_t *addend))
 973 {
 974         atomic_subtract_long((volatile u_long *)addend, 1);
 975         return(*addend);
 976 }
 977
 978 __stdcall __regcall static void
 979 ntoskrnl_interlock_addstat(REGARGS2(uint64_t *addend, uint32_t inc))
 980 {
 981         uint8_t                 irql;
 982
 983         irql = FASTCALL2(hal_lock, &ntoskrnl_global, DISPATCH_LEVEL);
 984         *addend += inc;
 985         FASTCALL2(hal_unlock, &ntoskrnl_global, irql);
 986
 987         return;
 988 };
 989
 990 __stdcall static void
 991 ntoskrnl_freemdl(ndis_buffer *mdl)
 992 {
 993         ndis_buffer             *head;
 994
 995         if (mdl == NULL || mdl->nb_process == NULL)
 996                 return;
 997
 998         head = mdl->nb_process;
 999
1000         if (head->nb_flags != 0x1)
1001                 return;
1002
1003         mdl->nb_next = head->nb_next;
1004         head->nb_next = mdl;
1005
1006         /* Decrement count of busy buffers. */
1007
1008         head->nb_bytecount--;
1009
1010         /*
1011          * If the pool has been marked for deletion and there are
1012          * no more buffers outstanding, nuke the pool.
1013          */
1014
1015         if (head->nb_byteoffset && head->nb_bytecount == 0)
1016                 kfree(head, M_DEVBUF);
1017
1018         return;
1019 }
1020
1021 __stdcall static uint32_t
1022 ntoskrnl_sizeofmdl(void *vaddr, size_t len)
1023 {
1024         uint32_t                l;
1025
1026         l = sizeof(struct ndis_buffer) +
1027             (sizeof(uint32_t) * SPAN_PAGES(vaddr, len));
1028
1029         return(l);
1030 }
1031
1032 __stdcall static void
1033 ntoskrnl_build_npaged_mdl(ndis_buffer *mdl)
1034 {
1035         mdl->nb_mappedsystemva = (char *)mdl->nb_startva + mdl->nb_byteoffset;
1036         return;
1037 }
1038
1039 __stdcall static void *
1040 ntoskrnl_mmaplockedpages(ndis_buffer *buf, uint8_t accessmode)
1041 {
1042         return(MDL_VA(buf));
1043 }
1044
1045 __stdcall static void *
1046 ntoskrnl_mmaplockedpages_cache(ndis_buffer *buf, uint8_t accessmode,
1047                                uint32_t cachetype, void *vaddr,
1048                                uint32_t bugcheck, uint32_t prio)
1049 {
1050         return(MDL_VA(buf));
1051 }
1052
1053 __stdcall static void
1054 ntoskrnl_munmaplockedpages(void *vaddr, ndis_buffer *buf)
1055 {
1056         return;
1057 }
1058
1059 /*
1060  * The KeInitializeSpinLock(), KefAcquireSpinLockAtDpcLevel()
1061  * and KefReleaseSpinLockFromDpcLevel() appear to be analagous
1062  * to crit_enter()/crit_exit() in their use. We can't create a new mutex
1063  * lock here because there is no complimentary KeFreeSpinLock()
1064  * function. Instead, we grab a mutex from the mutex pool.
1065  */
1066 __stdcall static void
1067 ntoskrnl_init_lock(kspin_lock *lock)
1068 {
1069         *lock = 0;
1070
1071         return;
1072 }
1073
1074 __stdcall static size_t
1075 ntoskrnl_memcmp(const void *s1, const void *s2, size_t len)
1076 {
1077         size_t                  i, total = 0;
1078         uint8_t                 *m1, *m2;
1079
1080         m1 = __DECONST(char *, s1);
1081         m2 = __DECONST(char *, s2);
1082
1083         for (i = 0; i < len; i++) {
1084                 if (m1[i] == m2[i])
1085                         total++;
1086         }
1087         return(total);
1088 }
1089
1090 __stdcall static void
1091 ntoskrnl_init_ansi_string(ndis_ansi_string *dst, char *src)
1092 {
1093         ndis_ansi_string        *a;
1094
1095         a = dst;
1096         if (a == NULL)
1097                 return;
1098         if (src == NULL) {
1099                 a->nas_len = a->nas_maxlen = 0;
1100                 a->nas_buf = NULL;
1101         } else {
1102                 a->nas_buf = src;
1103                 a->nas_len = a->nas_maxlen = strlen(src);
1104         }
1105
1106         return;
1107 }
1108
1109 __stdcall static void
1110 ntoskrnl_init_unicode_string(ndis_unicode_string *dst, uint16_t *src)
1111 {
1112         ndis_unicode_string     *u;
1113         int                     i;
1114
1115         u = dst;
1116         if (u == NULL)
1117                 return;
1118         if (src == NULL) {
1119                 u->nus_len = u->nus_maxlen = 0;
1120                 u->nus_buf = NULL;
1121         } else {
1122                 i = 0;
1123                 while(src[i] != 0)
1124                         i++;
1125                 u->nus_buf = src;
1126                 u->nus_len = u->nus_maxlen = i * 2;
1127         }
1128
1129         return;
1130 }
1131
1132 __stdcall ndis_status
1133 ntoskrnl_unicode_to_int(ndis_unicode_string *ustr, uint32_t base,
1134                         uint32_t *val)
1135 {
1136         uint16_t                *uchr;
1137         int                     len, neg = 0;
1138         char                    abuf[64];
1139         char                    *astr;
1140
1141         uchr = ustr->nus_buf;
1142         len = ustr->nus_len;
1143         bzero(abuf, sizeof(abuf));
1144
1145         if ((char)((*uchr) & 0xFF) == '-') {
1146                 neg = 1;
1147                 uchr++;
1148                 len -= 2;
1149         } else if ((char)((*uchr) & 0xFF) == '+') {
1150                 neg = 0;
1151                 uchr++;
1152                 len -= 2;
1153         }
1154
1155         if (base == 0) {
1156                 if ((char)((*uchr) & 0xFF) == 'b') {
1157                         base = 2;
1158                         uchr++;
1159                         len -= 2;
1160                 } else if ((char)((*uchr) & 0xFF) == 'o') {
1161                         base = 8;
1162                         uchr++;
1163                         len -= 2;
1164                 } else if ((char)((*uchr) & 0xFF) == 'x') {
1165                         base = 16;
1166                         uchr++;
1167                         len -= 2;
1168                 } else
1169                         base = 10;
1170         }
1171
1172         astr = abuf;
1173         if (neg) {
1174                 strcpy(astr, "-");
1175                 astr++;
1176         }
1177
1178         ndis_unicode_to_ascii(uchr, len, &astr);
1179         *val = strtoul(abuf, NULL, base);
1180
1181         return(NDIS_STATUS_SUCCESS);
1182 }
1183
1184 __stdcall static void
1185 ntoskrnl_free_unicode_string(ndis_unicode_string *ustr)
1186 {
1187         if (ustr->nus_buf == NULL)
1188                 return;
1189         kfree(ustr->nus_buf, M_DEVBUF);
1190         ustr->nus_buf = NULL;
1191         return;
1192 }
1193
1194 __stdcall static void
1195 ntoskrnl_free_ansi_string(ndis_ansi_string *astr)
1196 {
1197         if (astr->nas_buf == NULL)
1198                 return;
1199         kfree(astr->nas_buf, M_DEVBUF);
1200         astr->nas_buf = NULL;
1201         return;
1202 }
1203
1204 static int
1205 atoi(const char *str)
1206 {
1207         return (int)strtol(str, NULL, 10);
1208 }
1209
1210 static long
1211 atol(const char *str)
1212 {
1213         return strtol(str, NULL, 10);
1214 }
1215
1216 static int
1217 rand(void)
1218 {
1219         struct timeval          tv;
1220
1221         microtime(&tv);
1222         skrandom(tv.tv_usec);
1223         return((int)krandom());
1224 }
1225
1226 __stdcall static uint8_t
1227 ntoskrnl_wdmver(uint8_t major, uint8_t minor)
1228 {
1229         if (major == WDM_MAJOR && minor == WDM_MINOR_WINXP)
1230                 return(TRUE);
1231         return(FALSE);
1232 }
1233
1234 __stdcall static ndis_status
1235 ntoskrnl_devprop(device_object *devobj, uint32_t regprop, uint32_t buflen,
1236                  void *prop, uint32_t *reslen)
1237 {
1238         ndis_miniport_block     *block;
1239
1240         block = devobj->do_rsvd;
1241
1242         switch (regprop) {
1243         case DEVPROP_DRIVER_KEYNAME:
1244                 ndis_ascii_to_unicode(__DECONST(char *,
1245                     device_get_nameunit(block->nmb_dev)), (uint16_t **)&prop);
1246                 *reslen = strlen(device_get_nameunit(block->nmb_dev)) * 2;
1247                 break;
1248         default:
1249                 return(STATUS_INVALID_PARAMETER_2);
1250                 break;
1251         }
1252
1253         return(STATUS_SUCCESS);
1254 }
1255
1256 __stdcall static void
1257 ntoskrnl_init_mutex(kmutant *kmutex, uint32_t level)
1258 {
1259         INIT_LIST_HEAD((&kmutex->km_header.dh_waitlisthead));
1260         kmutex->km_abandoned = FALSE;
1261         kmutex->km_apcdisable = 1;
1262         kmutex->km_header.dh_sigstate = TRUE;
1263         kmutex->km_header.dh_type = EVENT_TYPE_SYNC;
1264         kmutex->km_header.dh_size = OTYPE_MUTEX;
1265         kmutex->km_acquirecnt = 0;
1266         kmutex->km_ownerthread = NULL;
1267         return;
1268 }
1269
1270 __stdcall static uint32_t
1271 ntoskrnl_release_mutex(kmutant *kmutex, uint8_t kwait)
1272 {
1273         struct lwkt_tokref      tokref;
1274
1275         lwkt_gettoken(&tokref, &ntoskrnl_dispatchtoken);
1276         if (kmutex->km_ownerthread != curthread->td_proc) {
1277                 lwkt_reltoken(&tokref);
1278                 return(STATUS_MUTANT_NOT_OWNED);
1279         }
1280         kmutex->km_acquirecnt--;
1281         if (kmutex->km_acquirecnt == 0) {
1282                 kmutex->km_ownerthread = NULL;
1283                 lwkt_reltoken(&tokref);
1284                 ntoskrnl_wakeup(&kmutex->km_header);
1285         } else
1286                 lwkt_reltoken(&tokref);
1287
1288         return(kmutex->km_acquirecnt);
1289 }
1290
1291 __stdcall static uint32_t
1292 ntoskrnl_read_mutex(kmutant *kmutex)
1293 {
1294         return(kmutex->km_header.dh_sigstate);
1295 }
1296
1297 __stdcall void
1298 ntoskrnl_init_event(nt_kevent *kevent, uint32_t type, uint8_t state)
1299 {
1300         INIT_LIST_HEAD((&kevent->k_header.dh_waitlisthead));
1301         kevent->k_header.dh_sigstate = state;
1302         kevent->k_header.dh_type = type;
1303         kevent->k_header.dh_size = OTYPE_EVENT;
1304         return;
1305 }
1306
1307 __stdcall uint32_t
1308 ntoskrnl_reset_event(nt_kevent *kevent)
1309 {
1310         uint32_t                prevstate;
1311         struct lwkt_tokref      tokref;
1312
1313         lwkt_gettoken(&tokref, &ntoskrnl_dispatchtoken);
1314         prevstate = kevent->k_header.dh_sigstate;
1315         kevent->k_header.dh_sigstate = FALSE;
1316         lwkt_reltoken(&tokref);
1317
1318         return(prevstate);
1319 }
1320
1321 __stdcall uint32_t
1322 ntoskrnl_set_event(nt_kevent *kevent, uint32_t increment, uint8_t kwait)
1323 {
1324         uint32_t                prevstate;
1325
1326         prevstate = kevent->k_header.dh_sigstate;
1327         ntoskrnl_wakeup(&kevent->k_header);
1328
1329         return(prevstate);
1330 }
1331
1332 __stdcall void
1333 ntoskrnl_clear_event(nt_kevent *kevent)
1334 {
1335         kevent->k_header.dh_sigstate = FALSE;
1336         return;
1337 }
1338
1339 __stdcall uint32_t
1340 ntoskrnl_read_event(nt_kevent *kevent)
1341 {
1342         return(kevent->k_header.dh_sigstate);
1343 }
1344
1345 __stdcall static ndis_status
1346 ntoskrnl_objref(ndis_handle handle, uint32_t reqaccess, void *otype,
1347                 uint8_t accessmode, void **object, void **handleinfo)
1348 {
1349         nt_objref               *nr;
1350
1351         nr = kmalloc(sizeof(nt_objref), M_DEVBUF, M_WAITOK|M_ZERO);
1352
1353         INIT_LIST_HEAD((&nr->no_dh.dh_waitlisthead));
1354         nr->no_obj = handle;
1355         nr->no_dh.dh_size = OTYPE_THREAD;
1356         TAILQ_INSERT_TAIL(&ntoskrnl_reflist, nr, link);
1357         *object = nr;
1358
1359         return(NDIS_STATUS_SUCCESS);
1360 }
1361
1362 __stdcall __regcall static void
1363 ntoskrnl_objderef(REGARGS1(void *object))
1364 {
1365         nt_objref               *nr;
1366
1367         nr = object;
1368         TAILQ_REMOVE(&ntoskrnl_reflist, nr, link);
1369         kfree(nr, M_DEVBUF);
1370
1371         return;
1372 }
1373
1374 __stdcall static uint32_t
1375 ntoskrnl_zwclose(ndis_handle handle)
1376 {
1377         return(STATUS_SUCCESS);
1378 }
1379
1380 /*
1381  * This is here just in case the thread returns without calling
1382  * PsTerminateSystemThread().
1383  */
1384 static void
1385 ntoskrnl_thrfunc(void *arg)
1386 {
1387         thread_context          *thrctx;
1388         __stdcall uint32_t (*tfunc)(void *);
1389         void                    *tctx;
1390         uint32_t                rval;
1391
1392         thrctx = arg;
1393         tfunc = thrctx->tc_thrfunc;
1394         tctx = thrctx->tc_thrctx;
1395         kfree(thrctx, M_TEMP);
1396
1397         rval = tfunc(tctx);
1398
1399         ntoskrnl_thread_exit(rval);
1400         return; /* notreached */
1401 }
1402
1403 __stdcall static ndis_status
1404 ntoskrnl_create_thread(ndis_handle *handle, uint32_t reqaccess,
1405                        void *objattrs, ndis_handle phandle,
1406                        void *clientid, void *thrfunc, void *thrctx)
1407 {
1408         int                     error;
1409         char                    tname[128];
1410         thread_context          *tc;
1411         thread_t                td;
1412
1413         tc = kmalloc(sizeof(thread_context), M_TEMP, M_WAITOK);
1414
1415         tc->tc_thrctx = thrctx;
1416         tc->tc_thrfunc = thrfunc;
1417
1418         ksprintf(tname, "windows kthread %d", ntoskrnl_kth);
1419         error = kthread_create_stk(ntoskrnl_thrfunc, tc, &td,
1420             NDIS_KSTACK_PAGES * PAGE_SIZE, tname);
1421         *handle = td;
1422
1423         ntoskrnl_kth++;
1424
1425         return(error);
1426 }
1427
1428 /*
1429  * In Windows, the exit of a thread is an event that you're allowed
1430  * to wait on, assuming you've obtained a reference to the thread using
1431  * ObReferenceObjectByHandle(). Unfortunately, the only way we can
1432  * simulate this behavior is to register each thread we create in a
1433  * reference list, and if someone holds a reference to us, we poke
1434  * them.
1435  */
1436 __stdcall static ndis_status
1437 ntoskrnl_thread_exit(ndis_status status)
1438 {
1439         struct nt_objref        *nr;
1440
1441         TAILQ_FOREACH(nr, &ntoskrnl_reflist, link) {
1442                 if (nr->no_obj != curthread)
1443                         continue;
1444                 ntoskrnl_wakeup(&nr->no_dh);
1445                 break;
1446         }
1447
1448         ntoskrnl_kth--;
1449
1450         kthread_exit();
1451         return(0);      /* notreached */
1452 }
1453
1454 static uint32_t
1455 ntoskrnl_dbgprint(char *fmt, ...)
1456 {
1457         __va_list                       ap;
1458
1459         if (bootverbose) {
1460                 __va_start(ap, fmt);
1461                 kvprintf(fmt, ap);
1462         }
1463
1464         return(STATUS_SUCCESS);
1465 }
1466
1467 __stdcall static void
1468 ntoskrnl_debugger(void)
1469 {
1470
1471 #if __FreeBSD_version < 502113
1472         Debugger("ntoskrnl_debugger(): breakpoint");
1473 #else
1474         kdb_enter("ntoskrnl_debugger(): breakpoint");
1475 #endif
1476 }
1477
1478 static void
1479 ntoskrnl_timercall(void *arg)
1480 {
1481         ktimer                  *timer;
1482
1483         timer = arg;
1484
1485         timer->k_header.dh_inserted = FALSE;
1486
1487         /*
1488          * If this is a periodic timer, re-arm it
1489          * so it will fire again. We do this before
1490          * calling any deferred procedure calls because
1491          * it's possible the DPC might cancel the timer,
1492          * in which case it would be wrong for us to
1493          * re-arm it again afterwards.
1494          */
1495
1496         if (timer->k_period) {
1497                 timer->k_header.dh_inserted = TRUE;
1498                 callout_reset(timer->k_handle, 1 + timer->k_period * hz / 1000,
1499                               ntoskrnl_timercall, timer);
1500         } else {
1501                 callout_deactivate(timer->k_handle);
1502                 kfree(timer->k_handle, M_NDIS);
1503                 timer->k_handle = NULL;
1504         }
1505
1506         if (timer->k_dpc != NULL)
1507                 ntoskrnl_queue_dpc(timer->k_dpc, NULL, NULL);
1508
1509         ntoskrnl_wakeup(&timer->k_header);
1510 }
1511
1512 __stdcall void
1513 ntoskrnl_init_timer(ktimer *timer)
1514 {
1515         if (timer == NULL)
1516                 return;
1517
1518         ntoskrnl_init_timer_ex(timer,  EVENT_TYPE_NOTIFY);
1519 }
1520
1521 __stdcall void
1522 ntoskrnl_init_timer_ex(ktimer *timer, uint32_t type)
1523 {
1524         if (timer == NULL)
1525                 return;
1526
1527         INIT_LIST_HEAD((&timer->k_header.dh_waitlisthead));
1528         timer->k_header.dh_sigstate = FALSE;
1529         timer->k_header.dh_inserted = FALSE;
1530         timer->k_header.dh_type = type;
1531         timer->k_header.dh_size = OTYPE_TIMER;
1532         timer->k_handle = NULL;
1533
1534         return;
1535 }
1536
1537 /*
1538  * This is a wrapper for Windows deferred procedure calls that
1539  * have been placed on an NDIS thread work queue. We need it
1540  * since the DPC could be a _stdcall function. Also, as far as
1541  * I can tell, defered procedure calls must run at DISPATCH_LEVEL.
1542  */
1543 static void
1544 ntoskrnl_run_dpc(void *arg)
1545 {
1546         kdpc_func               dpcfunc;
1547         kdpc                    *dpc;
1548         uint8_t                 irql;
1549
1550         dpc = arg;
1551         dpcfunc = (kdpc_func)dpc->k_deferedfunc;
1552         irql = FASTCALL1(hal_raise_irql, DISPATCH_LEVEL);
1553         dpcfunc(dpc, dpc->k_deferredctx, dpc->k_sysarg1, dpc->k_sysarg2);
1554         FASTCALL1(hal_lower_irql, irql);
1555
1556         return;
1557 }
1558
1559 __stdcall void
1560 ntoskrnl_init_dpc(kdpc *dpc, void *dpcfunc, void *dpcctx)
1561 {
1562         if (dpc == NULL)
1563                 return;
1564
1565         dpc->k_deferedfunc = dpcfunc;
1566         dpc->k_deferredctx = dpcctx;
1567
1568         return;
1569 }
1570
1571 __stdcall uint8_t
1572 ntoskrnl_queue_dpc(kdpc *dpc, void *sysarg1, void *sysarg2)
1573 {
1574         dpc->k_sysarg1 = sysarg1;
1575         dpc->k_sysarg2 = sysarg2;
1576         if (ndis_sched(ntoskrnl_run_dpc, dpc, NDIS_SWI))
1577                 return(FALSE);
1578
1579         return(TRUE);
1580 }
1581
1582 __stdcall uint8_t
1583 ntoskrnl_dequeue_dpc(kdpc *dpc)
1584 {
1585         if (ndis_unsched(ntoskrnl_run_dpc, dpc, NDIS_SWI))
1586                 return(FALSE);
1587
1588         return(TRUE);
1589 }
1590
1591 __stdcall uint8_t
1592 ntoskrnl_set_timer_ex(ktimer *timer, int64_t duetime, uint32_t period,
1593                       kdpc *dpc)
1594 {
1595         struct timeval          tv;
1596         uint64_t                curtime;
1597         uint8_t                 pending;
1598         int                     ticks;
1599
1600         if (timer == NULL)
1601                 return(FALSE);
1602
1603         if (timer->k_header.dh_inserted == TRUE) {
1604                 if (timer->k_handle != NULL)
1605                         callout_stop(timer->k_handle);
1606                 timer->k_header.dh_inserted = FALSE;
1607                 pending = TRUE;
1608         } else
1609                 pending = FALSE;
1610
1611         timer->k_duetime = duetime;
1612         timer->k_period = period;
1613         timer->k_header.dh_sigstate = FALSE;
1614         timer->k_dpc = dpc;
1615
1616         if (duetime < 0) {
1617                 tv.tv_sec = - (duetime) / 10000000;
1618                 tv.tv_usec = (- (duetime) / 10) -
1619                     (tv.tv_sec * 1000000);
1620         } else {
1621                 ntoskrnl_time(&curtime);
1622                 if (duetime < curtime)
1623                         tv.tv_sec = tv.tv_usec = 0;
1624                 else {
1625                         tv.tv_sec = ((duetime) - curtime) / 10000000;
1626                         tv.tv_usec = ((duetime) - curtime) / 10 -
1627                             (tv.tv_sec * 1000000);
1628                 }
1629         }
1630
1631         ticks = 1 + tv.tv_sec * hz + tv.tv_usec * hz / 1000000;
1632         timer->k_header.dh_inserted = TRUE;
1633         if (timer->k_handle == NULL) {
1634                 timer->k_handle = kmalloc(sizeof(struct callout), M_NDIS,
1635                                          M_INTWAIT);
1636                 callout_init(timer->k_handle);
1637         }
1638         callout_reset(timer->k_handle, ticks, ntoskrnl_timercall, timer);
1639
1640         return(pending);
1641 }
1642
1643 __stdcall uint8_t
1644 ntoskrnl_set_timer(ktimer *timer, int64_t duetime, kdpc *dpc)
1645 {
1646         return (ntoskrnl_set_timer_ex(timer, duetime, 0, dpc));
1647 }
1648
1649 __stdcall uint8_t
1650 ntoskrnl_cancel_timer(ktimer *timer)
1651 {
1652         uint8_t                 pending;
1653
1654         if (timer == NULL)
1655                 return(FALSE);
1656
1657         if (timer->k_header.dh_inserted == TRUE) {
1658                 if (timer->k_handle != NULL) {
1659                         callout_stop(timer->k_handle);
1660                         kfree(timer->k_handle, M_NDIS);
1661                         timer->k_handle = NULL;
1662                 }
1663                 if (timer->k_dpc != NULL)
1664                         ntoskrnl_dequeue_dpc(timer->k_dpc);
1665                 pending = TRUE;
1666         } else
1667                 pending = FALSE;
1668
1669
1670         return(pending);
1671 }
1672
1673 __stdcall uint8_t
1674 ntoskrnl_read_timer(ktimer *timer)
1675 {
1676         return(timer->k_header.dh_sigstate);
1677 }
1678
1679 __stdcall static void
1680 dummy(void)
1681 {
1682         kprintf ("ntoskrnl dummy called...\n");
1683         return;
1684 }
1685
1686
1687 image_patch_table ntoskrnl_functbl[] = {
1688         { "RtlCompareMemory",           (FUNC)ntoskrnl_memcmp },
1689         { "RtlEqualUnicodeString",      (FUNC)ntoskrnl_unicode_equal },
1690         { "RtlCopyUnicodeString",       (FUNC)ntoskrnl_unicode_copy },
1691         { "RtlUnicodeStringToAnsiString", (FUNC)ntoskrnl_unicode_to_ansi },
1692         { "RtlAnsiStringToUnicodeString", (FUNC)ntoskrnl_ansi_to_unicode },
1693         { "RtlInitAnsiString",          (FUNC)ntoskrnl_init_ansi_string },
1694         { "RtlInitUnicodeString",       (FUNC)ntoskrnl_init_unicode_string },
1695         { "RtlFreeAnsiString",          (FUNC)ntoskrnl_free_ansi_string },
1696         { "RtlFreeUnicodeString",       (FUNC)ntoskrnl_free_unicode_string },
1697         { "RtlUnicodeStringToInteger",  (FUNC)ntoskrnl_unicode_to_int },
1698         { "sprintf",                    (FUNC)ksprintf },
1699         { "vsprintf",                   (FUNC)kvsprintf },
1700         { "_snprintf",                  (FUNC)ksnprintf },
1701         { "_vsnprintf",                 (FUNC)kvsnprintf },
1702         { "DbgPrint",                   (FUNC)ntoskrnl_dbgprint },
1703         { "DbgBreakPoint",              (FUNC)ntoskrnl_debugger },
1704         { "strncmp",                    (FUNC)strncmp },
1705         { "strcmp",                     (FUNC)strcmp },
1706         { "strncpy",                    (FUNC)strncpy },
1707         { "strcpy",                     (FUNC)strcpy },
1708         { "strlen",                     (FUNC)strlen },
1709         { "memcpy",                     (FUNC)memcpy },
1710         { "memmove",                    (FUNC)memcpy },
1711         { "memset",                     (FUNC)memset },
1712         { "IofCallDriver",              (FUNC)ntoskrnl_iofcalldriver },
1713         { "IofCompleteRequest",         (FUNC)ntoskrnl_iofcompletereq },
1714         { "IoBuildSynchronousFsdRequest", (FUNC)ntoskrnl_iobuildsynchfsdreq },
1715         { "KeWaitForSingleObject",      (FUNC)ntoskrnl_waitforobj },
1716         { "KeWaitForMultipleObjects",   (FUNC)ntoskrnl_waitforobjs },
1717         { "_allmul",                    (FUNC)_allmul },
1718         { "_alldiv",                    (FUNC)_alldiv },
1719         { "_allrem",                    (FUNC)_allrem },
1720         { "_allshr",                    (FUNC)_allshr },
1721         { "_allshl",                    (FUNC)_allshl },
1722         { "_aullmul",                   (FUNC)_aullmul },
1723         { "_aulldiv",                   (FUNC)_aulldiv },
1724         { "_aullrem",                   (FUNC)_aullrem },
1725         { "_aullshr",                   (FUNC)_aullshr },
1726         { "_aullshl",                   (FUNC)_aullshl },
1727         { "atoi",                       (FUNC)atoi },
1728         { "atol",                       (FUNC)atol },
1729         { "rand",                       (FUNC)rand },
1730         { "WRITE_REGISTER_USHORT",      (FUNC)ntoskrnl_writereg_ushort },
1731         { "READ_REGISTER_USHORT",       (FUNC)ntoskrnl_readreg_ushort },
1732         { "WRITE_REGISTER_ULONG",       (FUNC)ntoskrnl_writereg_ulong },
1733         { "READ_REGISTER_ULONG",        (FUNC)ntoskrnl_readreg_ulong },
1734         { "READ_REGISTER_UCHAR",        (FUNC)ntoskrnl_readreg_uchar },
1735         { "WRITE_REGISTER_UCHAR",       (FUNC)ntoskrnl_writereg_uchar },
1736         { "ExInitializePagedLookasideList", (FUNC)ntoskrnl_init_lookaside },
1737         { "ExDeletePagedLookasideList", (FUNC)ntoskrnl_delete_lookaside },
1738         { "ExInitializeNPagedLookasideList", (FUNC)ntoskrnl_init_nplookaside },
1739         { "ExDeleteNPagedLookasideList", (FUNC)ntoskrnl_delete_nplookaside },
1740         { "InterlockedPopEntrySList",   (FUNC)ntoskrnl_pop_slist },
1741         { "InterlockedPushEntrySList",  (FUNC)ntoskrnl_push_slist },
1742         { "ExInterlockedPopEntrySList", (FUNC)ntoskrnl_pop_slist_ex },
1743         { "ExInterlockedPushEntrySList",(FUNC)ntoskrnl_push_slist_ex },
1744         { "KefAcquireSpinLockAtDpcLevel", (FUNC)ntoskrnl_lock_dpc },
1745         { "KefReleaseSpinLockFromDpcLevel", (FUNC)ntoskrnl_unlock_dpc },
1746         { "InterlockedIncrement",       (FUNC)ntoskrnl_interlock_inc },
1747         { "InterlockedDecrement",       (FUNC)ntoskrnl_interlock_dec },
1748         { "ExInterlockedAddLargeStatistic",
1749                                         (FUNC)ntoskrnl_interlock_addstat },
1750         { "IoFreeMdl",                  (FUNC)ntoskrnl_freemdl },
1751         { "MmSizeOfMdl",                (FUNC)ntoskrnl_sizeofmdl },
1752         { "MmMapLockedPages",           (FUNC)ntoskrnl_mmaplockedpages },
1753         { "MmMapLockedPagesSpecifyCache",
1754                                         (FUNC)ntoskrnl_mmaplockedpages_cache },
1755         { "MmUnmapLockedPages",         (FUNC)ntoskrnl_munmaplockedpages },
1756         { "MmBuildMdlForNonPagedPool",  (FUNC)ntoskrnl_build_npaged_mdl },
1757         { "KeInitializeSpinLock",       (FUNC)ntoskrnl_init_lock },
1758         { "IoIsWdmVersionAvailable",    (FUNC)ntoskrnl_wdmver },
1759         { "IoGetDeviceProperty",        (FUNC)ntoskrnl_devprop },
1760         { "KeInitializeMutex",          (FUNC)ntoskrnl_init_mutex },
1761         { "KeReleaseMutex",             (FUNC)ntoskrnl_release_mutex },
1762         { "KeReadStateMutex",           (FUNC)ntoskrnl_read_mutex },
1763         { "KeInitializeEvent",          (FUNC)ntoskrnl_init_event },
1764         { "KeSetEvent",                 (FUNC)ntoskrnl_set_event },
1765         { "KeResetEvent",               (FUNC)ntoskrnl_reset_event },
1766         { "KeClearEvent",               (FUNC)ntoskrnl_clear_event },
1767         { "KeReadStateEvent",           (FUNC)ntoskrnl_read_event },
1768         { "KeInitializeTimer",          (FUNC)ntoskrnl_init_timer },
1769         { "KeInitializeTimerEx",        (FUNC)ntoskrnl_init_timer_ex },
1770         { "KeSetTimer",                 (FUNC)ntoskrnl_set_timer },
1771         { "KeSetTimerEx",               (FUNC)ntoskrnl_set_timer_ex },
1772         { "KeCancelTimer",              (FUNC)ntoskrnl_cancel_timer },
1773         { "KeReadStateTimer",           (FUNC)ntoskrnl_read_timer },
1774         { "KeInitializeDpc",            (FUNC)ntoskrnl_init_dpc },
1775         { "KeInsertQueueDpc",           (FUNC)ntoskrnl_queue_dpc },
1776         { "KeRemoveQueueDpc",           (FUNC)ntoskrnl_dequeue_dpc },
1777         { "ObReferenceObjectByHandle",  (FUNC)ntoskrnl_objref },
1778         { "ObfDereferenceObject",       (FUNC)ntoskrnl_objderef },
1779         { "ZwClose",                    (FUNC)ntoskrnl_zwclose },
1780         { "PsCreateSystemThread",       (FUNC)ntoskrnl_create_thread },
1781         { "PsTerminateSystemThread",    (FUNC)ntoskrnl_thread_exit },
1782
1783         /*
1784          * This last entry is a catch-all for any function we haven't
1785          * implemented yet. The PE import list patching routine will
1786          * use it for any function that doesn't have an explicit match
1787          * in this table.
1788          */
1789
1790         { NULL, (FUNC)dummy },
1791
1792         /* End of list. */
1793
1794         { NULL, NULL },
1795 };