msdos/vxd.c

   1 /*
   2  * VxD emulation
   3  *
   4  * Copyright 1995 Anand Kumria
   5  */
   6
   7 #include <fcntl.h>
   8 #include <memory.h>
   9 #include "windows.h"
  10 #include "winbase.h"
  11 #include "msdos.h"
  12 #include "miscemu.h"
  13 #include "selectors.h"
  14 #include "module.h"
  15 #include "task.h"
  16 #include "process.h"
  17 #include "file.h"
  18 #include "debug.h"
  19
  20
  21 #define VXD_BARF(context,name) \
  22     DUMP( "vxd %s: unknown/not implemented parameters:\n" \
  23                      "vxd %s: AX %04x, BX %04x, CX %04x, DX %04x, " \
  24                      "SI %04x, DI %04x, DS %04x, ES %04x\n", \
  25              (name), (name), AX_reg(context), BX_reg(context), \
  26              CX_reg(context), DX_reg(context), SI_reg(context), \
  27              DI_reg(context), (WORD)DS_reg(context), (WORD)ES_reg(context) )
  28
  29
  30 static WORD VXD_WinVersion(void)
  31 {
  32     WORD version = LOWORD(GetVersion16());
  33     return (version >> 8) | (version << 8);
  34 }
  35
  36 /***********************************************************************
  37  *           VXD_VMM
  38  */
  39 void VXD_VMM ( CONTEXT *context )
  40 {
  41     unsigned service = AX_reg(context);
  42
  43     TRACE(vxd,"[%04x] VMM  \n", (UINT16)service);
  44
  45     switch(service)
  46     {
  47     case 0x0000: /* version */
  48         AX_reg(context) = VXD_WinVersion();
  49         RESET_CFLAG(context);
  50         break;
  51
  52     case 0x026d: /* Get_Debug_Flag '/m' */
  53     case 0x026e: /* Get_Debug_Flag '/n' */
  54         AL_reg(context) = 0;
  55         RESET_CFLAG(context);
  56         break;
  57
  58     default:
  59         VXD_BARF( context, "VMM" );
  60     }
  61 }
  62
  63 /***********************************************************************
  64  *           VXD_PageFile
  65  */
  66 void WINAPI VXD_PageFile( CONTEXT *context )
  67 {
  68     unsigned    service = AX_reg(context);
  69
  70     /* taken from Ralf Brown's Interrupt List */
  71
  72     TRACE(vxd,"[%04x] PageFile\n", (UINT16)service );
  73
  74     switch(service)
  75     {
  76     case 0x00: /* get version, is this windows version? */
  77         TRACE(vxd,"returning version\n");
  78         AX_reg(context) = VXD_WinVersion();
  79         RESET_CFLAG(context);
  80         break;
  81
  82     case 0x01: /* get swap file info */
  83         TRACE(vxd,"VxD PageFile: returning swap file info\n");
  84         AX_reg(context) = 0x00; /* paging disabled */
  85         ECX_reg(context) = 0;   /* maximum size of paging file */
  86         /* FIXME: do I touch DS:SI or DS:DI? */
  87         RESET_CFLAG(context);
  88         break;
  89
  90     case 0x02: /* delete permanent swap on exit */
  91         TRACE(vxd,"VxD PageFile: supposed to delete swap\n");
  92         RESET_CFLAG(context);
  93         break;
  94
  95     case 0x03: /* current temporary swap file size */
  96         TRACE(vxd,"VxD PageFile: what is current temp. swap size\n");
  97         RESET_CFLAG(context);
  98         break;
  99
 100     case 0x04: /* read or write?? INTERRUP.D */
 101     case 0x05: /* cancel?? INTERRUP.D */
 102     case 0x06: /* test I/O valid INTERRUP.D */
 103     default:
 104         VXD_BARF( context, "pagefile" );
 105         break;
 106     }
 107 }
 108
 109 /***********************************************************************
 110  *           VXD_Reboot
 111  */
 112 void VXD_Reboot ( CONTEXT *context )
 113 {
 114     unsigned service = AX_reg(context);
 115
 116     TRACE(vxd,"[%04x] VMM  \n", (UINT16)service);
 117
 118     switch(service)
 119     {
 120     case 0x0000: /* version */
 121         AX_reg(context) = VXD_WinVersion();
 122         RESET_CFLAG(context);
 123         break;
 124
 125     default:
 126         VXD_BARF( context, "REBOOT" );
 127     }
 128 }
 129
 130 /***********************************************************************
 131  *           VXD_VDD
 132  */
 133 void VXD_VDD ( CONTEXT *context )
 134 {
 135     unsigned service = AX_reg(context);
 136
 137     TRACE(vxd,"[%04x] VDD  \n", (UINT16)service);
 138
 139     switch(service)
 140     {
 141     case 0x0000: /* version */
 142         AX_reg(context) = VXD_WinVersion();
 143         RESET_CFLAG(context);
 144         break;
 145
 146     default:
 147         VXD_BARF( context, "VDD" );
 148     }
 149 }
 150
 151 /***********************************************************************
 152  *           VXD_VMD
 153  */
 154 void VXD_VMD ( CONTEXT *context )
 155 {
 156     unsigned service = AX_reg(context);
 157
 158     TRACE(vxd,"[%04x] VMD  \n", (UINT16)service);
 159
 160     switch(service)
 161     {
 162     case 0x0000: /* version */
 163         AX_reg(context) = VXD_WinVersion();
 164         RESET_CFLAG(context);
 165         break;
 166
 167     default:
 168         VXD_BARF( context, "VMD" );
 169     }
 170 }
 171
 172 /***********************************************************************
 173  *           VXD_Shell
 174  */
 175 void WINAPI VXD_Shell( CONTEXT *context )
 176 {
 177     unsigned    service = DX_reg(context);
 178
 179     TRACE(vxd,"[%04x] Shell\n", (UINT16)service);
 180
 181     switch (service) /* Ralf Brown says EDX, but I use DX instead */
 182     {
 183     case 0x0000:
 184         TRACE(vxd,"returning version\n");
 185         AX_reg(context) = VXD_WinVersion();
 186         EBX_reg(context) = 1; /* system VM Handle */
 187         break;
 188
 189     case 0x0001:
 190     case 0x0002:
 191     case 0x0003:
 192     case 0x0004:
 193     case 0x0005:
 194         VXD_BARF( context, "shell" );
 195         break;
 196
 197     case 0x0006: /* SHELL_Get_VM_State */
 198         TRACE(vxd,"VxD Shell: returning VM state\n");
 199         /* Actually we don't, not yet. We have to return a structure
 200          * and I am not to sure how to set it up and return it yet,
 201          * so for now let's do nothing. I can (hopefully) get this
 202          * by the next release
 203          */
 204         /* RESET_CFLAG(context); */
 205         break;
 206
 207     case 0x0007:
 208     case 0x0008:
 209     case 0x0009:
 210     case 0x000A:
 211     case 0x000B:
 212     case 0x000C:
 213     case 0x000D:
 214     case 0x000E:
 215     case 0x000F:
 216     case 0x0010:
 217     case 0x0011:
 218     case 0x0012:
 219     case 0x0013:
 220     case 0x0014:
 221     case 0x0015:
 222     case 0x0016:
 223         VXD_BARF( context, "SHELL" );
 224         break;
 225
 226     /* the new Win95 shell API */
 227     case 0x0100:     /* get version */
 228         AX_reg(context) = VXD_WinVersion();
 229         break;
 230
 231     case 0x0104:   /* retrieve Hook_Properties list */
 232     case 0x0105:   /* call Hook_Properties callbacks */
 233         VXD_BARF( context, "SHELL" );
 234         break;
 235
 236     case 0x0106:   /* install timeout callback */
 237         TRACE( vxd, "VxD Shell: ignoring shell callback (%ld sec.)\n",
 238                     EBX_reg( context ) );
 239         SET_CFLAG(context);
 240         break;
 241
 242     case 0x0107:   /* get version of any VxD */
 243     default:
 244         VXD_BARF( context, "SHELL" );
 245         break;
 246     }
 247 }
 248
 249
 250 /***********************************************************************
 251  *           VXD_Comm
 252  */
 253 void WINAPI VXD_Comm( CONTEXT *context )
 254 {
 255     unsigned    service = AX_reg(context);
 256
 257     TRACE(vxd,"[%04x] Comm\n", (UINT16)service);
 258
 259     switch (service)
 260     {
 261     case 0x0000: /* get version */
 262         TRACE(vxd,"returning version\n");
 263         AX_reg(context) = VXD_WinVersion();
 264         RESET_CFLAG(context);
 265         break;
 266
 267     case 0x0001: /* set port global */
 268     case 0x0002: /* get focus */
 269     case 0x0003: /* virtualise port */
 270     default:
 271         VXD_BARF( context, "comm" );
 272     }
 273 }
 274
 275 /***********************************************************************
 276  *           VXD_Timer
 277  */
 278 void VXD_Timer( CONTEXT *context )
 279 {
 280     unsigned service = AX_reg(context);
 281
 282     TRACE(vxd,"[%04x] Virtual Timer\n", (UINT16)service);
 283
 284     switch(service)
 285     {
 286     case 0x0000: /* version */
 287         AX_reg(context) = VXD_WinVersion();
 288         RESET_CFLAG(context);
 289         break;
 290
 291     case 0x0100: /* clock tick time, in 840nsecs */
 292         EAX_reg(context) = GetTickCount();
 293
 294         EDX_reg(context) = EAX_reg(context) >> 22;
 295         EAX_reg(context) <<= 10; /* not very precise */
 296         break;
 297
 298     case 0x0101: /* current Windows time, msecs */
 299     case 0x0102: /* current VM time, msecs */
 300         EAX_reg(context) = GetTickCount();
 301         break;
 302
 303     default:
 304         VXD_BARF( context, "VTD" );
 305     }
 306 }
 307
 308 /***********************************************************************
 309  *           VXD_TimerAPI
 310  */
 311 static DWORD System_Time = 0;
 312 static WORD  System_Time_Selector = 0;
 313 static void  System_Time_Tick( WORD timer ) { System_Time += 55; }
 314 void VXD_TimerAPI ( CONTEXT *context )
 315 {
 316     unsigned service = AX_reg(context);
 317
 318     TRACE(vxd,"[%04x] TimerAPI  \n", (UINT16)service);
 319
 320     switch(service)
 321     {
 322     case 0x0000: /* version */
 323         AX_reg(context) = VXD_WinVersion();
 324         RESET_CFLAG(context);
 325         break;
 326
 327     case 0x0009: /* get system time selector */
 328         if ( !System_Time_Selector )
 329         {
 330             System_Time_Selector = SELECTOR_AllocBlock( &System_Time, sizeof(DWORD),
 331                                                         SEGMENT_DATA, FALSE, TRUE );
 332             CreateSystemTimer( 55, System_Time_Tick );
 333         }
 334
 335         AX_reg(context) = System_Time_Selector;
 336         RESET_CFLAG(context);
 337         break;
 338
 339     default:
 340         VXD_BARF( context, "VTDAPI" );
 341     }
 342 }
 343
 344 /***********************************************************************
 345  *           VXD_ConfigMG
 346  */
 347 void VXD_ConfigMG ( CONTEXT *context )
 348 {
 349     unsigned service = AX_reg(context);
 350
 351     TRACE(vxd,"[%04x] ConfigMG  \n", (UINT16)service);
 352
 353     switch(service)
 354     {
 355     case 0x0000: /* version */
 356         AX_reg(context) = VXD_WinVersion();
 357         RESET_CFLAG(context);
 358         break;
 359
 360     default:
 361         VXD_BARF( context, "CONFIGMG" );
 362     }
 363 }
 364
 365 /***********************************************************************
 366  *           VXD_Enable
 367  */
 368 void VXD_Enable ( CONTEXT *context )
 369 {
 370     unsigned service = AX_reg(context);
 371
 372     TRACE(vxd,"[%04x] Enable  \n", (UINT16)service);
 373
 374     switch(service)
 375     {
 376     case 0x0000: /* version */
 377         AX_reg(context) = VXD_WinVersion();
 378         RESET_CFLAG(context);
 379         break;
 380
 381     default:
 382         VXD_BARF( context, "ENABLE" );
 383     }
 384 }
 385
 386 /***********************************************************************
 387  *           VXD_APM
 388  */
 389 void VXD_APM ( CONTEXT *context )
 390 {
 391     unsigned service = AX_reg(context);
 392
 393     TRACE(vxd,"[%04x] APM  \n", (UINT16)service);
 394
 395     switch(service)
 396     {
 397     case 0x0000: /* version */
 398         AX_reg(context) = VXD_WinVersion();
 399         RESET_CFLAG(context);
 400         break;
 401
 402     default:
 403         VXD_BARF( context, "APM" );
 404     }
 405 }
 406
 407 /***********************************************************************
 408  *           VXD_Win32s
 409  *
 410  * This is an implementation of the services of the Win32s VxD.
 411  * Since official documentation of these does not seem to be available,
 412  * certain arguments of some of the services remain unclear.
 413  *
 414  * FIXME: The following services are currently unimplemented:
 415  *        Exception handling      (0x01, 0x1C)
 416  *        Debugger support        (0x0C, 0x14, 0x17)
 417  *        Low-level memory access (0x02, 0x03, 0x0A, 0x0B)
 418  *        Memory Statistics       (0x1B)
 419  *
 420  *
 421  * We have a specific problem running Win32s on Linux (and probably also
 422  * the other x86 unixes), since Win32s tries to allocate its main 'flat
 423  * code/data segment' selectors with a base of 0xffff0000 (and limit 4GB).
 424  * The rationale for this seems to be that they want one the one hand to
 425  * be able to leave the Win 3.1 memory (starting with the main DOS memory)
 426  * at linear address 0, but want at other hand to have offset 0 of the
 427  * flat data/code segment point to an unmapped page (to catch NULL pointer
 428  * accesses). Hence they allocate the flat segments with a base of 0xffff0000
 429  * so that the Win 3.1 memory area at linear address zero shows up in the
 430  * flat segments at offset 0x10000 (since linear addresses wrap around at
 431  * 4GB). To compensate for that discrepancy between flat segment offsets
 432  * and plain linear addresses, all flat pointers passed between the 32-bit
 433  * and the 16-bit parts of Win32s are shifted by 0x10000 in the appropriate
 434  * direction by the glue code (mainly) in W32SKRNL and WIN32S16.
 435  *
 436  * The problem for us is now that Linux does not allow a LDT selector with
 437  * base 0xffff0000 to be created, since it would 'see' a part of the kernel
 438  * address space. To address this problem we introduce *another* offset:
 439  * We add 0x10000 to every linear address we get as an argument from Win32s.
 440  * This means especially that the flat code/data selectors get actually
 441  * allocated with base 0x0, so that flat offsets and (real) linear addresses
 442  * do again agree!  In fact, every call e.g. of a Win32s VxD service now
 443  * has all pointer arguments (which are offsets in the flat data segement)
 444  * first reduced by 0x10000 by the W32SKRNL glue code, and then again
 445  * increased by 0x10000 by *our* code.
 446  *
 447  * Note that to keep everything consistent, this offset has to be applied by
 448  * every Wine function that operates on 'linear addresses' passed to it by
 449  * Win32s. Fortunately, since Win32s does not directly call any Wine 32-bit
 450  * API routines, this affects only two locations: this VxD and the DPMI
 451  * handler. (NOTE: Should any Win32s application pass a linear address to
 452  * any routine apart from those, e.g. some other VxD handler, that code
 453  * would have to take the offset into account as well!)
 454  *
 455  * The application of the offset is triggered by marking the current process
 456  * as a Win32s process by setting the PDB32_WIN32S_PROC flag in the process
 457  * database. This is done the first time any application calls the GetVersion()
 458  * service of the Win32s VxD. (Note that the flag is never removed.)
 459  *
 460  */
 461
 462 void VXD_Win32s( CONTEXT *context )
 463 {
 464     switch (AX_reg(context))
 465     {
 466     case 0x0000: /* Get Version */
 467         /*
 468          * Input:   None
 469          *
 470          * Output:  EAX: LoWord: Win32s Version (1.30)
 471          *               HiWord: VxD Version (200)
 472          *
 473          *          EBX: Build (172)
 474          *
 475          *          ECX: ???   (1)
 476          *
 477          *          EDX: Debugging Flags
 478          *
 479          *          EDI: Error Flag
 480          *               0 if OK,
 481          *               1 if VMCPD VxD not found
 482          */
 483
 484         TRACE(vxd, "GetVersion()\n");
 485
 486         EAX_reg(context) = VXD_WinVersion() | (200 << 16);
 487         EBX_reg(context) = 0;
 488         ECX_reg(context) = 0;
 489         EDX_reg(context) = 0;
 490         EDI_reg(context) = 0;
 491
 492         /*
 493          * If this is the first time we are called for this process,
 494          * hack the memory image of WIN32S16 so that it doesn't try
 495          * to access the GDT directly ...
 496          *
 497          * The first code segment of WIN32S16 (version 1.30) contains
 498          * an unexported function somewhere between the exported functions
 499          * SetFS and StackLinearToSegmented that tries to find a selector
 500          * in the LDT that maps to the memory image of the LDT itself.
 501          * If it succeeds, it stores this selector into a global variable
 502          * which will be used to speed up execution by using this selector
 503          * to modify the LDT directly instead of using the DPMI calls.
 504          *
 505          * To perform this search of the LDT, this function uses the
 506          * sgdt and sldt instructions to find the linear address of
 507          * the (GDT and then) LDT. While those instructions themselves
 508          * execute without problem, the linear address that sgdt returns
 509          * points (at least under Linux) to the kernel address space, so
 510          * that any subsequent access leads to a segfault.
 511          *
 512          * Fortunately, WIN32S16 still contains as a fallback option the
 513          * mechanism of using DPMI calls to modify LDT selectors instead
 514          * of direct writes to the LDT. Thus we can circumvent the problem
 515          * by simply replacing the first byte of the offending function
 516          * with an 'retf' instruction. This means that the global variable
 517          * supposed to contain the LDT alias selector will remain zero,
 518          * and hence WIN32S16 will fall back to using DPMI calls.
 519          *
 520          * The heuristic we employ to _find_ that function is as follows:
 521          * We search between the addresses of the exported symbols SetFS
 522          * and StackLinearToSegmented for the byte sequence '0F 01 04'
 523          * (this is the opcode of 'sgdt [si]'). We then search backwards
 524          * from this address for the last occurrance of 'CB' (retf) that marks
 525          * the end of the preceeding function. The following byte (which
 526          * should now be the first byte of the function we are looking for)
 527          * will be replaced by 'CB' (retf).
 528          *
 529          * This heuristic works for the retail as well as the debug version
 530          * of Win32s version 1.30. For versions earlier than that this
 531          * hack should not be necessary at all, since the whole mechanism
 532          * ('PERF130') was introduced only in 1.30 to improve the overall
 533          * performance of Win32s.
 534          */
 535
 536         if (!(PROCESS_Current()->flags & PDB32_WIN32S_PROC))
 537         {
 538             HMODULE16 hModule = GetModuleHandle16("win32s16");
 539             SEGPTR func1 = (SEGPTR)WIN32_GetProcAddress16(hModule, "SetFS");
 540             SEGPTR func2 = (SEGPTR)WIN32_GetProcAddress16(hModule,
 541                                                   "StackLinearToSegmented");
 542
 543             if (   hModule && func1 && func2
 544                 && SELECTOROF(func1) == SELECTOROF(func2))
 545             {
 546                 BYTE *start = PTR_SEG_TO_LIN(func1);
 547                 BYTE *end   = PTR_SEG_TO_LIN(func2);
 548                 BYTE *p, *retv = NULL;
 549                 int found = 0;
 550
 551                 for (p = start; p < end; p++)
 552                     if (*p == 0xCB) found = 0, retv = p;
 553                     else if (*p == 0x0F) found = 1;
 554                     else if (*p == 0x01 && found == 1) found = 2;
 555                     else if (*p == 0x04 && found == 2) { found = 3; break; }
 556                     else found = 0;
 557
 558                 if (found == 3 && retv)
 559                 {
 560                     TRACE(vxd, "PERF130 hack: "
 561                                "Replacing byte %02X at offset %04X:%04X\n",
 562                                *(retv+1), SELECTOROF(func1),
 563                                           OFFSETOF(func1) + retv+1-start);
 564
 565                     *(retv+1) = (BYTE)0xCB;
 566                 }
 567             }
 568         }
 569
 570         /*
 571          * Mark process as Win32s, so that subsequent DPMI calls
 572          * will perform the W32S_APP2WINE/W32S_WINE2APP address shift.
 573          */
 574
 575         PROCESS_Current()->flags |= PDB32_WIN32S_PROC;
 576         break;
 577
 578
 579     case 0x0001: /* Install Exception Handling */
 580         /*
 581          * Input:   EBX: Flat address of W32SKRNL Exception Data
 582          *
 583          *          ECX: LoWord: Flat Code Selector
 584          *               HiWord: Flat Data Selector
 585          *
 586          *          EDX: Flat address of W32SKRNL Exception Handler
 587          *               (this is equal to W32S_BackTo32 + 0x40)
 588          *
 589          *          ESI: SEGPTR KERNEL.HASGPHANDLER
 590          *
 591          *          EDI: SEGPTR phCurrentTask (KERNEL.THHOOK + 0x10)
 592          *
 593          * Output:  EAX: 0 if OK
 594          */
 595
 596         TRACE(vxd, "[0001] EBX=%lx ECX=%lx EDX=%lx ESI=%lx EDI=%lx\n",
 597                    EBX_reg(context), ECX_reg(context), EDX_reg(context),
 598                    ESI_reg(context), EDI_reg(context));
 599
 600         /* FIXME */
 601
 602         EAX_reg(context) = 0;
 603         break;
 604
 605
 606     case 0x0002: /* Set Page Access Flags */
 607         /*
 608          * Input:   EBX: New access flags
 609          *               Bit 2: User Page if set, Supervisor Page if clear
 610          *               Bit 1: Read-Write if set, Read-Only if clear
 611          *
 612          *          ECX: Size of memory area to change
 613          *
 614          *          EDX: Flat start address of memory area
 615          *
 616          * Output:  EAX: Size of area changed
 617          */
 618
 619         TRACE(vxd, "[0002] EBX=%lx ECX=%lx EDX=%lx\n",
 620                    EBX_reg(context), ECX_reg(context), EDX_reg(context));
 621
 622         /* FIXME */
 623
 624         EAX_reg(context) = ECX_reg(context);
 625         break;
 626
 627
 628     case 0x0003: /* Get Page Access Flags */
 629         /*
 630          * Input:   EDX: Flat address of page to query
 631          *
 632          * Output:  EAX: Page access flags
 633          *               Bit 2: User Page if set, Supervisor Page if clear
 634          *               Bit 1: Read-Write if set, Read-Only if clear
 635          */
 636
 637         TRACE(vxd, "[0003] EDX=%lx\n", EDX_reg(context));
 638
 639         /* FIXME */
 640
 641         EAX_reg(context) = 6;
 642         break;
 643
 644
 645     case 0x0004: /* Map Module */
 646         /*
 647          * Input:   ECX: IMTE (offset in Module Table) of new module
 648          *
 649          *          EDX: Flat address of Win32s Module Table
 650          *
 651          * Output:  EAX: 0 if OK
 652          */
 653
 654     if (!EDX_reg(context) || CX_reg(context) == 0xFFFF)
 655     {
 656         TRACE(vxd, "MapModule: Initialization call\n");
 657         EAX_reg(context) = 0;
 658     }
 659     else
 660     {
 661         /*
 662          * Structure of a Win32s Module Table Entry:
 663          */
 664         struct Win32sModule
 665         {
 666             DWORD  flags;
 667             DWORD  flatBaseAddr;
 668             LPCSTR moduleName;
 669             LPCSTR pathName;
 670             LPCSTR unknown;
 671             LPBYTE baseAddr;
 672             DWORD  hModule;
 673             DWORD  relocDelta;
 674         };
 675
 676         /*
 677          * Note: This function should set up a demand-paged memory image
 678          *       of the given module. Since mmap does not allow file offsets
 679          *       not aligned at 1024 bytes, we simply load the image fully
 680          *       into memory.
 681          */
 682
 683         struct Win32sModule *moduleTable =
 684                             (struct Win32sModule *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
 685         struct Win32sModule *module = moduleTable + ECX_reg(context);
 686
 687         IMAGE_NT_HEADERS *nt_header = PE_HEADER(module->baseAddr);
 688         IMAGE_SECTION_HEADER *pe_seg = PE_SECTIONS(module->baseAddr);
 689
 690         HFILE32 image = _lopen32(module->pathName, OF_READ);
 691         BOOL32 error = (image == INVALID_HANDLE_VALUE32);
 692         UINT32 i;
 693
 694         TRACE(vxd, "MapModule: Loading %s\n", module->pathName);
 695
 696         for (i = 0;
 697              !error && i < nt_header->FileHeader.NumberOfSections;
 698              i++, pe_seg++)
 699             if(!(pe_seg->Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA))
 700             {
 701                 DWORD  off  = pe_seg->PointerToRawData;
 702                 DWORD  len  = pe_seg->SizeOfRawData;
 703                 LPBYTE addr = module->baseAddr + pe_seg->VirtualAddress;
 704
 705                 TRACE(vxd, "MapModule: "
 706                            "Section %d at %08lx from %08lx len %08lx\n",
 707                            i, (DWORD)addr, off, len);
 708
 709                 if (   _llseek32(image, off, SEEK_SET) != off
 710                     || _lread32(image, addr, len) != len)
 711                     error = TRUE;
 712             }
 713
 714         _lclose32(image);
 715
 716         if (error)
 717             ERR(vxd, "MapModule: Unable to load %s\n", module->pathName);
 718
 719         else if (module->relocDelta != 0)
 720         {
 721             IMAGE_DATA_DIRECTORY *dir = nt_header->OptionalHeader.DataDirectory
 722                                       + IMAGE_DIRECTORY_ENTRY_BASERELOC;
 723             IMAGE_BASE_RELOCATION *r = (IMAGE_BASE_RELOCATION *)
 724                 (dir->Size? module->baseAddr + dir->VirtualAddress : 0);
 725
 726             TRACE(vxd, "MapModule: Reloc delta %08lx\n", module->relocDelta);
 727
 728             while (r && r->VirtualAddress)
 729             {
 730                 LPBYTE page  = module->baseAddr + r->VirtualAddress;
 731                 int    count = (r->SizeOfBlock - 8) / 2;
 732
 733                 TRACE(vxd, "MapModule: %d relocations for page %08lx\n",
 734                            count, (DWORD)page);
 735
 736                 for(i = 0; i < count; i++)
 737                 {
 738                     int offset = r->TypeOffset[i] & 0xFFF;
 739                     int type   = r->TypeOffset[i] >> 12;
 740                     switch(type)
 741                     {
 742                     case IMAGE_REL_BASED_ABSOLUTE:
 743                         break;
 744                     case IMAGE_REL_BASED_HIGH:
 745                         *(WORD *)(page+offset) += HIWORD(module->relocDelta);
 746                         break;
 747                     case IMAGE_REL_BASED_LOW:
 748                         *(WORD *)(page+offset) += LOWORD(module->relocDelta);
 749                         break;
 750                     case IMAGE_REL_BASED_HIGHLOW:
 751                         *(DWORD*)(page+offset) += module->relocDelta;
 752                         break;
 753                     default:
 754                         WARN(vxd, "MapModule: Unsupported fixup type\n");
 755                         break;
 756                     }
 757                 }
 758
 759                 r = (IMAGE_BASE_RELOCATION *)((LPBYTE)r + r->SizeOfBlock);
 760             }
 761         }
 762
 763         EAX_reg(context) = 0;
 764         RESET_CFLAG(context);
 765     }
 766     break;
 767
 768
 769     case 0x0005: /* UnMap Module */
 770         /*
 771          * Input:   EDX: Flat address of module image
 772          *
 773          * Output:  EAX: 1 if OK
 774          */
 775
 776         TRACE(vxd, "UnMapModule: %lx\n", (DWORD)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET));
 777
 778         /* As we didn't map anything, there's nothing to unmap ... */
 779
 780         EAX_reg(context) = 1;
 781         break;
 782
 783
 784     case 0x0006: /* VirtualAlloc */
 785         /*
 786          * Input:   ECX: Current Process
 787          *
 788          *          EDX: Flat address of arguments on stack
 789          *
 790          *   DWORD *retv     [out] Flat base address of allocated region
 791          *   LPVOID base     [in]  Flat address of region to reserve/commit
 792          *   DWORD  size     [in]  Size of region
 793          *   DWORD  type     [in]  Type of allocation
 794          *   DWORD  prot     [in]  Type of access protection
 795          *
 796          * Output:  EAX: NtStatus
 797          */
 798     {
 799         DWORD *stack  = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
 800         DWORD *retv   = (DWORD *)W32S_APP2WINE(stack[0], W32S_OFFSET);
 801         LPVOID base   = (LPVOID) W32S_APP2WINE(stack[1], W32S_OFFSET);
 802         DWORD  size   = stack[2];
 803         DWORD  type   = stack[3];
 804         DWORD  prot   = stack[4];
 805         DWORD  result;
 806
 807         TRACE(vxd, "VirtualAlloc(%lx, %lx, %lx, %lx, %lx)\n",
 808                    (DWORD)retv, (DWORD)base, size, type, prot);
 809
 810         if (type & 0x80000000)
 811         {
 812             WARN(vxd, "VirtualAlloc: strange type %lx\n", type);
 813             type &= 0x7fffffff;
 814         }
 815
 816         if (!base && (type & MEM_COMMIT) && prot == PAGE_READONLY)
 817         {
 818             WARN(vxd, "VirtualAlloc: NLS hack, allowing write access!\n");
 819             prot = PAGE_READWRITE;
 820         }
 821
 822         result = (DWORD)VirtualAlloc(base, size, type, prot);
 823
 824         if (W32S_WINE2APP(result, W32S_OFFSET))
 825             *retv            = W32S_WINE2APP(result, W32S_OFFSET),
 826             EAX_reg(context) = STATUS_SUCCESS;
 827         else
 828             *retv            = 0,
 829             EAX_reg(context) = STATUS_NO_MEMORY;  /* FIXME */
 830     }
 831     break;
 832
 833
 834     case 0x0007: /* VirtualFree */
 835         /*
 836          * Input:   ECX: Current Process
 837          *
 838          *          EDX: Flat address of arguments on stack
 839          *
 840          *   DWORD *retv     [out] TRUE if success, FALSE if failure
 841          *   LPVOID base     [in]  Flat address of region
 842          *   DWORD  size     [in]  Size of region
 843          *   DWORD  type     [in]  Type of operation
 844          *
 845          * Output:  EAX: NtStatus
 846          */
 847     {
 848         DWORD *stack  = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
 849         DWORD *retv   = (DWORD *)W32S_APP2WINE(stack[0], W32S_OFFSET);
 850         LPVOID base   = (LPVOID) W32S_APP2WINE(stack[1], W32S_OFFSET);
 851         DWORD  size   = stack[2];
 852         DWORD  type   = stack[3];
 853         DWORD  result;
 854
 855         TRACE(vxd, "VirtualFree(%lx, %lx, %lx, %lx)\n",
 856                    (DWORD)retv, (DWORD)base, size, type);
 857
 858         result = VirtualFree(base, size, type);
 859
 860         if (result)
 861             *retv            = TRUE,
 862             EAX_reg(context) = STATUS_SUCCESS;
 863         else
 864             *retv            = FALSE,
 865             EAX_reg(context) = STATUS_NO_MEMORY;  /* FIXME */
 866     }
 867     break;
 868
 869
 870     case 0x0008: /* VirtualProtect */
 871         /*
 872          * Input:   ECX: Current Process
 873          *
 874          *          EDX: Flat address of arguments on stack
 875          *
 876          *   DWORD *retv     [out] TRUE if success, FALSE if failure
 877          *   LPVOID base     [in]  Flat address of region
 878          *   DWORD  size     [in]  Size of region
 879          *   DWORD  new_prot [in]  Desired access protection
 880          *   DWORD *old_prot [out] Previous access protection
 881          *
 882          * Output:  EAX: NtStatus
 883          */
 884     {
 885         DWORD *stack    = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
 886         DWORD *retv     = (DWORD *)W32S_APP2WINE(stack[0], W32S_OFFSET);
 887         LPVOID base     = (LPVOID) W32S_APP2WINE(stack[1], W32S_OFFSET);
 888         DWORD  size     = stack[2];
 889         DWORD  new_prot = stack[3];
 890         DWORD *old_prot = (DWORD *)W32S_APP2WINE(stack[4], W32S_OFFSET);
 891         DWORD  result;
 892
 893         TRACE(vxd, "VirtualProtect(%lx, %lx, %lx, %lx, %lx)\n",
 894                    (DWORD)retv, (DWORD)base, size, new_prot, (DWORD)old_prot);
 895
 896         result = VirtualProtect(base, size, new_prot, old_prot);
 897
 898         if (result)
 899             *retv            = TRUE,
 900             EAX_reg(context) = STATUS_SUCCESS;
 901         else
 902             *retv            = FALSE,
 903             EAX_reg(context) = STATUS_NO_MEMORY;  /* FIXME */
 904     }
 905     break;
 906
 907
 908     case 0x0009: /* VirtualQuery */
 909         /*
 910          * Input:   ECX: Current Process
 911          *
 912          *          EDX: Flat address of arguments on stack
 913          *
 914          *   DWORD *retv                     [out] Nr. bytes returned
 915          *   LPVOID base                     [in]  Flat address of region
 916          *   LPMEMORY_BASIC_INFORMATION info [out] Info buffer
 917          *   DWORD  len                      [in]  Size of buffer
 918          *
 919          * Output:  EAX: NtStatus
 920          */
 921     {
 922         DWORD *stack  = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
 923         DWORD *retv   = (DWORD *)W32S_APP2WINE(stack[0], W32S_OFFSET);
 924         LPVOID base   = (LPVOID) W32S_APP2WINE(stack[1], W32S_OFFSET);
 925         LPMEMORY_BASIC_INFORMATION info =
 926                         (LPMEMORY_BASIC_INFORMATION)W32S_APP2WINE(stack[2], W32S_OFFSET);
 927         DWORD  len    = stack[3];
 928         DWORD  result;
 929
 930         TRACE(vxd, "VirtualQuery(%lx, %lx, %lx, %lx)\n",
 931                    (DWORD)retv, (DWORD)base, (DWORD)info, len);
 932
 933         result = VirtualQuery(base, info, len);
 934
 935         *retv            = result;
 936         EAX_reg(context) = STATUS_SUCCESS;
 937     }
 938     break;
 939
 940
 941     case 0x000A: /* SetVirtMemProcess */
 942         /*
 943          * Input:   ECX: Process Handle
 944          *
 945          *          EDX: Flat address of region
 946          *
 947          * Output:  EAX: NtStatus
 948          */
 949
 950         TRACE(vxd, "[000a] ECX=%lx EDX=%lx\n",
 951                    ECX_reg(context), EDX_reg(context));
 952
 953         /* FIXME */
 954
 955         EAX_reg(context) = STATUS_SUCCESS;
 956         break;
 957
 958
 959     case 0x000B: /* ??? some kind of cleanup */
 960         /*
 961          * Input:   ECX: Process Handle
 962          *
 963          * Output:  EAX: NtStatus
 964          */
 965
 966         TRACE(vxd, "[000b] ECX=%lx\n", ECX_reg(context));
 967
 968         /* FIXME */
 969
 970         EAX_reg(context) = STATUS_SUCCESS;
 971         break;
 972
 973
 974     case 0x000C: /* Set Debug Flags */
 975         /*
 976          * Input:   EDX: Debug Flags
 977          *
 978          * Output:  EDX: Previous Debug Flags
 979          */
 980
 981         FIXME(vxd, "[000c] EDX=%lx\n", EDX_reg(context));
 982
 983         /* FIXME */
 984
 985         EDX_reg(context) = 0;
 986         break;
 987
 988
 989     case 0x000D: /* NtCreateSection */
 990         /*
 991          * Input:   EDX: Flat address of arguments on stack
 992          *
 993          *   HANDLE32 *retv      [out] Handle of Section created
 994          *   DWORD  flags1       [in]  (?? unknown ??)
 995          *   DWORD  atom         [in]  Name of Section to create
 996          *   LARGE_INTEGER *size [in]  Size of Section
 997          *   DWORD  protect      [in]  Access protection
 998          *   DWORD  flags2       [in]  (?? unknown ??)
 999          *   HFILE32 hFile       [in]  Handle of file to map
1000          *   DWORD  psp          [in]  (Win32s: PSP that hFile belongs to)
1001          *
1002          * Output:  EAX: NtStatus
1003          */
1004     {
1005         DWORD *stack    = (DWORD *)   W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
1006         HANDLE32 *retv  = (HANDLE32 *)W32S_APP2WINE(stack[0], W32S_OFFSET);
1007         DWORD  flags1   = stack[1];
1008         DWORD  atom     = stack[2];
1009         LARGE_INTEGER *size = (LARGE_INTEGER *)W32S_APP2WINE(stack[3], W32S_OFFSET);
1010         DWORD  protect  = stack[4];
1011         DWORD  flags2   = stack[5];
1012         HFILE32 hFile   = FILE_GetHandle32(stack[6]);
1013         DWORD  psp      = stack[7];
1014
1015         HANDLE32 result = INVALID_HANDLE_VALUE32;
1016         char name[128];
1017
1018         TRACE(vxd, "NtCreateSection(%lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx)\n",
1019                    (DWORD)retv, flags1, atom, (DWORD)size, protect, flags2,
1020                    (DWORD)hFile, psp);
1021
1022         if (!atom || GlobalGetAtomName32A(atom, name, sizeof(name)))
1023         {
1024             TRACE(vxd, "NtCreateSection: name=%s\n", atom? name : NULL);
1025
1026             result = CreateFileMapping32A(hFile, NULL, protect,
1027                                           size? size->HighPart : 0,
1028                                           size? size->LowPart  : 0,
1029                                           atom? name : NULL);
1030         }
1031
1032         if (result == INVALID_HANDLE_VALUE32)
1033             WARN(vxd, "NtCreateSection: failed!\n");
1034         else
1035             TRACE(vxd, "NtCreateSection: returned %lx\n", (DWORD)result);
1036
1037         if (result != INVALID_HANDLE_VALUE32)
1038             *retv            = result,
1039             EAX_reg(context) = STATUS_SUCCESS;
1040         else
1041             *retv            = result,
1042             EAX_reg(context) = STATUS_NO_MEMORY;   /* FIXME */
1043     }
1044     break;
1045
1046
1047     case 0x000E: /* NtOpenSection */
1048         /*
1049          * Input:   EDX: Flat address of arguments on stack
1050          *
1051          *   HANDLE32 *retv  [out] Handle of Section opened
1052          *   DWORD  protect  [in]  Access protection
1053          *   DWORD  atom     [in]  Name of Section to create
1054          *
1055          * Output:  EAX: NtStatus
1056          */
1057     {
1058         DWORD *stack    = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
1059         HANDLE32 *retv  = (HANDLE32 *)W32S_APP2WINE(stack[0], W32S_OFFSET);
1060         DWORD  protect  = stack[1];
1061         DWORD  atom     = stack[2];
1062
1063         HANDLE32 result = INVALID_HANDLE_VALUE32;
1064         char name[128];
1065
1066         TRACE(vxd, "NtOpenSection(%lx, %lx, %lx)\n",
1067                    (DWORD)retv, protect, atom);
1068
1069         if (atom && GlobalGetAtomName32A(atom, name, sizeof(name)))
1070         {
1071             TRACE(vxd, "NtOpenSection: name=%s\n", name);
1072
1073             result = OpenFileMapping32A(protect, FALSE, name);
1074         }
1075
1076         if (result == INVALID_HANDLE_VALUE32)
1077             WARN(vxd, "NtOpenSection: failed!\n");
1078         else
1079             TRACE(vxd, "NtOpenSection: returned %lx\n", (DWORD)result);
1080
1081         if (result != INVALID_HANDLE_VALUE32)
1082             *retv            = result,
1083             EAX_reg(context) = STATUS_SUCCESS;
1084         else
1085             *retv            = result,
1086             EAX_reg(context) = STATUS_NO_MEMORY;   /* FIXME */
1087     }
1088     break;
1089
1090
1091     case 0x000F: /* NtCloseSection */
1092         /*
1093          * Input:   EDX: Flat address of arguments on stack
1094          *
1095          *   HANDLE32 handle  [in]  Handle of Section to close
1096          *   DWORD *id        [out] Unique ID  (?? unclear ??)
1097          *
1098          * Output:  EAX: NtStatus
1099          */
1100     {
1101         DWORD *stack    = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
1102         HANDLE32 handle = stack[0];
1103         DWORD *id       = (DWORD *)W32S_APP2WINE(stack[1], W32S_OFFSET);
1104
1105         TRACE(vxd, "NtCloseSection(%lx, %lx)\n", (DWORD)handle, (DWORD)id);
1106
1107         CloseHandle(handle);
1108         if (id) *id = 0; /* FIXME */
1109
1110         EAX_reg(context) = STATUS_SUCCESS;
1111     }
1112     break;
1113
1114
1115     case 0x0010: /* NtDupSection */
1116         /*
1117          * Input:   EDX: Flat address of arguments on stack
1118          *
1119          *   HANDLE32 handle  [in]  Handle of Section to duplicate
1120          *
1121          * Output:  EAX: NtStatus
1122          */
1123     {
1124         DWORD *stack    = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
1125         HANDLE32 handle = stack[0];
1126         HANDLE32 new_handle;
1127
1128         TRACE(vxd, "NtDupSection(%lx)\n", (DWORD)handle);
1129
1130         DuplicateHandle( GetCurrentProcess(), handle,
1131                          GetCurrentProcess(), &new_handle,
1132                          0, FALSE, DUPLICATE_SAME_ACCESS );
1133         EAX_reg(context) = STATUS_SUCCESS;
1134     }
1135     break;
1136
1137
1138     case 0x0011: /* NtMapViewOfSection */
1139         /*
1140          * Input:   EDX: Flat address of arguments on stack
1141          *
1142          *   HANDLE32 SectionHandle       [in]     Section to be mapped
1143          *   DWORD    ProcessHandle       [in]     Process to be mapped into
1144          *   DWORD *  BaseAddress         [in/out] Address to be mapped at
1145          *   DWORD    ZeroBits            [in]     (?? unclear ??)
1146          *   DWORD    CommitSize          [in]     (?? unclear ??)
1147          *   LARGE_INTEGER *SectionOffset [in]     Offset within section
1148          *   DWORD *  ViewSize            [in]     Size of view
1149          *   DWORD    InheritDisposition  [in]     (?? unclear ??)
1150          *   DWORD    AllocationType      [in]     (?? unclear ??)
1151          *   DWORD    Protect             [in]     Access protection
1152          *
1153          * Output:  EAX: NtStatus
1154          */
1155     {
1156         DWORD *  stack          = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
1157         HANDLE32 SectionHandle  = stack[0];
1158         DWORD    ProcessHandle  = stack[1]; /* ignored */
1159         DWORD *  BaseAddress    = (DWORD *)W32S_APP2WINE(stack[2], W32S_OFFSET);
1160         DWORD    ZeroBits       = stack[3];
1161         DWORD    CommitSize     = stack[4];
1162         LARGE_INTEGER *SectionOffset = (LARGE_INTEGER *)W32S_APP2WINE(stack[5], W32S_OFFSET);
1163         DWORD *  ViewSize       = (DWORD *)W32S_APP2WINE(stack[6], W32S_OFFSET);
1164         DWORD    InheritDisposition = stack[7];
1165         DWORD    AllocationType = stack[8];
1166         DWORD    Protect        = stack[9];
1167
1168         LPBYTE address = (LPBYTE)(BaseAddress?
1169                         W32S_APP2WINE(*BaseAddress, W32S_OFFSET) : 0);
1170         DWORD  access = 0, result;
1171
1172         switch (Protect & ~(PAGE_GUARD|PAGE_NOCACHE))
1173         {
1174             case PAGE_READONLY:           access = FILE_MAP_READ;  break;
1175             case PAGE_READWRITE:          access = FILE_MAP_WRITE; break;
1176             case PAGE_WRITECOPY:          access = FILE_MAP_COPY;  break;
1177
1178             case PAGE_EXECUTE_READ:       access = FILE_MAP_READ;  break;
1179             case PAGE_EXECUTE_READWRITE:  access = FILE_MAP_WRITE; break;
1180             case PAGE_EXECUTE_WRITECOPY:  access = FILE_MAP_COPY;  break;
1181         }
1182
1183         TRACE(vxd, "NtMapViewOfSection"
1184                    "(%lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx)\n",
1185                    (DWORD)SectionHandle, ProcessHandle, (DWORD)BaseAddress,
1186                    ZeroBits, CommitSize, (DWORD)SectionOffset, (DWORD)ViewSize,
1187                    InheritDisposition, AllocationType, Protect);
1188         TRACE(vxd, "NtMapViewOfSection: "
1189                    "base=%lx, offset=%lx, size=%lx, access=%lx\n",
1190                    (DWORD)address, SectionOffset? SectionOffset->LowPart : 0,
1191                    ViewSize? *ViewSize : 0, access);
1192
1193         result = (DWORD)MapViewOfFileEx(SectionHandle, access,
1194                             SectionOffset? SectionOffset->HighPart : 0,
1195                             SectionOffset? SectionOffset->LowPart  : 0,
1196                             ViewSize? *ViewSize : 0, address);
1197
1198         TRACE(vxd, "NtMapViewOfSection: result=%lx\n", result);
1199
1200         if (W32S_WINE2APP(result, W32S_OFFSET))
1201         {
1202             if (BaseAddress) *BaseAddress = W32S_WINE2APP(result, W32S_OFFSET);
1203             EAX_reg(context) = STATUS_SUCCESS;
1204         }
1205         else
1206             EAX_reg(context) = STATUS_NO_MEMORY; /* FIXME */
1207     }
1208     break;
1209
1210
1211     case 0x0012: /* NtUnmapViewOfSection */
1212         /*
1213          * Input:   EDX: Flat address of arguments on stack
1214          *
1215          *   DWORD  ProcessHandle  [in]  Process (defining address space)
1216          *   LPBYTE BaseAddress    [in]  Base address of view to be unmapped
1217          *
1218          * Output:  EAX: NtStatus
1219          */
1220     {
1221         DWORD *stack          = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
1222         DWORD  ProcessHandle  = stack[0]; /* ignored */
1223         LPBYTE BaseAddress    = (LPBYTE)W32S_APP2WINE(stack[1], W32S_OFFSET);
1224
1225         TRACE(vxd, "NtUnmapViewOfSection(%lx, %lx)\n",
1226                    ProcessHandle, (DWORD)BaseAddress);
1227
1228         UnmapViewOfFile(BaseAddress);
1229
1230         EAX_reg(context) = STATUS_SUCCESS;
1231     }
1232     break;
1233
1234
1235     case 0x0013: /* NtFlushVirtualMemory */
1236         /*
1237          * Input:   EDX: Flat address of arguments on stack
1238          *
1239          *   DWORD   ProcessHandle  [in]  Process (defining address space)
1240          *   LPBYTE *BaseAddress    [in?] Base address of range to be flushed
1241          *   DWORD  *ViewSize       [in?] Number of bytes to be flushed
1242          *   DWORD  *unknown        [???] (?? unknown ??)
1243          *
1244          * Output:  EAX: NtStatus
1245          */
1246     {
1247         DWORD *stack          = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
1248         DWORD  ProcessHandle  = stack[0]; /* ignored */
1249         DWORD *BaseAddress    = (DWORD *)W32S_APP2WINE(stack[1], W32S_OFFSET);
1250         DWORD *ViewSize       = (DWORD *)W32S_APP2WINE(stack[2], W32S_OFFSET);
1251         DWORD *unknown        = (DWORD *)W32S_APP2WINE(stack[3], W32S_OFFSET);
1252
1253         LPBYTE address = (LPBYTE)(BaseAddress? W32S_APP2WINE(*BaseAddress, W32S_OFFSET) : 0);
1254         DWORD  size    = ViewSize? *ViewSize : 0;
1255
1256         TRACE(vxd, "NtFlushVirtualMemory(%lx, %lx, %lx, %lx)\n",
1257                    ProcessHandle, (DWORD)BaseAddress, (DWORD)ViewSize,
1258                    (DWORD)unknown);
1259         TRACE(vxd, "NtFlushVirtualMemory: base=%lx, size=%lx\n",
1260                    (DWORD)address, size);
1261
1262         FlushViewOfFile(address, size);
1263
1264         EAX_reg(context) = STATUS_SUCCESS;
1265     }
1266     break;
1267
1268
1269     case 0x0014: /* Get/Set Debug Registers */
1270         /*
1271          * Input:   ECX: 0 if Get, 1 if Set
1272          *
1273          *          EDX: Get: Flat address of buffer to receive values of
1274          *                    debug registers DR0 .. DR7
1275          *               Set: Flat address of buffer containing values of
1276          *                    debug registers DR0 .. DR7 to be set
1277          * Output:  None
1278          */
1279
1280         FIXME(vxd, "[0014] ECX=%lx EDX=%lx\n",
1281                    ECX_reg(context), EDX_reg(context));
1282
1283         /* FIXME */
1284         break;
1285
1286
1287     case 0x0015: /* Set Coprocessor Emulation Flag */
1288         /*
1289          * Input:   EDX: 0 to deactivate, 1 to activate coprocessor emulation
1290          *
1291          * Output:  None
1292          */
1293
1294         TRACE(vxd, "[0015] EDX=%lx\n", EDX_reg(context));
1295
1296         /* We don't care, as we always have a coprocessor anyway */
1297         break;
1298
1299
1300     case 0x0016: /* Init Win32S VxD PSP */
1301         /*
1302          * If called to query required PSP size:
1303          *
1304          *     Input:  EBX: 0
1305          *     Output: EDX: Required size of Win32s VxD PSP
1306          *
1307          * If called to initialize allocated PSP:
1308          *
1309          *     Input:  EBX: LoWord: Selector of Win32s VxD PSP
1310          *                  HiWord: Paragraph of Win32s VxD PSP (DOSMEM)
1311          *     Output: None
1312          */
1313
1314         if (EBX_reg(context) == 0)
1315             EDX_reg(context) = 0x80;
1316         else
1317         {
1318             PDB *psp = PTR_SEG_OFF_TO_LIN(BX_reg(context), 0);
1319             psp->nbFiles = 32;
1320             psp->fileHandlesPtr = MAKELONG(HIWORD(EBX_reg(context)), 0x5c);
1321             memset((LPBYTE)psp + 0x5c, '\xFF', 32);
1322         }
1323         break;
1324
1325
1326     case 0x0017: /* Set Break Point */
1327         /*
1328          * Input:   EBX: Offset of Break Point
1329          *          CX:  Selector of Break Point
1330          *
1331          * Output:  None
1332          */
1333
1334         FIXME(vxd, "[0017] EBX=%lx CX=%x\n",
1335                    EBX_reg(context), CX_reg(context));
1336
1337         /* FIXME */
1338         break;
1339
1340
1341     case 0x0018: /* VirtualLock */
1342         /*
1343          * Input:   ECX: Current Process
1344          *
1345          *          EDX: Flat address of arguments on stack
1346          *
1347          *   DWORD *retv     [out] TRUE if success, FALSE if failure
1348          *   LPVOID base     [in]  Flat address of range to lock
1349          *   DWORD  size     [in]  Size of range
1350          *
1351          * Output:  EAX: NtStatus
1352          */
1353     {
1354         DWORD *stack  = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
1355         DWORD *retv   = (DWORD *)W32S_APP2WINE(stack[0], W32S_OFFSET);
1356         LPVOID base   = (LPVOID) W32S_APP2WINE(stack[1], W32S_OFFSET);
1357         DWORD  size   = stack[2];
1358         DWORD  result;
1359
1360         TRACE(vxd, "VirtualLock(%lx, %lx, %lx)\n",
1361                    (DWORD)retv, (DWORD)base, size);
1362
1363         result = VirtualLock(base, size);
1364
1365         if (result)
1366             *retv            = TRUE,
1367             EAX_reg(context) = STATUS_SUCCESS;
1368         else
1369             *retv            = FALSE,
1370             EAX_reg(context) = STATUS_NO_MEMORY;  /* FIXME */
1371     }
1372     break;
1373
1374
1375     case 0x0019: /* VirtualUnlock */
1376         /*
1377          * Input:   ECX: Current Process
1378          *
1379          *          EDX: Flat address of arguments on stack
1380          *
1381          *   DWORD *retv     [out] TRUE if success, FALSE if failure
1382          *   LPVOID base     [in]  Flat address of range to unlock
1383          *   DWORD  size     [in]  Size of range
1384          *
1385          * Output:  EAX: NtStatus
1386          */
1387     {
1388         DWORD *stack  = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
1389         DWORD *retv   = (DWORD *)W32S_APP2WINE(stack[0], W32S_OFFSET);
1390         LPVOID base   = (LPVOID) W32S_APP2WINE(stack[1], W32S_OFFSET);
1391         DWORD  size   = stack[2];
1392         DWORD  result;
1393
1394         TRACE(vxd, "VirtualUnlock(%lx, %lx, %lx)\n",
1395                    (DWORD)retv, (DWORD)base, size);
1396
1397         result = VirtualUnlock(base, size);
1398
1399         if (result)
1400             *retv            = TRUE,
1401             EAX_reg(context) = STATUS_SUCCESS;
1402         else
1403             *retv            = FALSE,
1404             EAX_reg(context) = STATUS_NO_MEMORY;  /* FIXME */
1405     }
1406     break;
1407
1408
1409     case 0x001A: /* KGetSystemInfo */
1410         /*
1411          * Input:   None
1412          *
1413          * Output:  ECX:  Start of sparse memory arena
1414          *          EDX:  End of sparse memory arena
1415          */
1416
1417         TRACE(vxd, "KGetSystemInfo()\n");
1418
1419         /*
1420          * Note: Win32s reserves 0GB - 2GB for Win 3.1 and uses 2GB - 4GB as
1421          *       sparse memory arena. We do it the other way around, since
1422          *       we have to reserve 3GB - 4GB for Linux, and thus use
1423          *       0GB - 3GB as sparse memory arena.
1424          *
1425          *       FIXME: What about other OSes ?
1426          */
1427
1428         ECX_reg(context) = W32S_WINE2APP(0x00000000, W32S_OFFSET);
1429         EDX_reg(context) = W32S_WINE2APP(0xbfffffff, W32S_OFFSET);
1430         break;
1431
1432
1433     case 0x001B: /* KGlobalMemStat */
1434         /*
1435          * Input:   ESI: Flat address of buffer to receive memory info
1436          *
1437          * Output:  None
1438          */
1439     {
1440         struct Win32sMemoryInfo
1441         {
1442             DWORD DIPhys_Count;       /* Total physical pages */
1443             DWORD DIFree_Count;       /* Free physical pages */
1444             DWORD DILin_Total_Count;  /* Total virtual pages (private arena) */
1445             DWORD DILin_Total_Free;   /* Free virtual pages (private arena) */
1446
1447             DWORD SparseTotal;        /* Total size of sparse arena (bytes ?) */
1448             DWORD SparseFree;         /* Free size of sparse arena (bytes ?) */
1449         };
1450
1451         struct Win32sMemoryInfo *info =
1452                        (struct Win32sMemoryInfo *)W32S_APP2WINE(ESI_reg(context), W32S_OFFSET);
1453
1454         FIXME(vxd, "KGlobalMemStat(%lx)\n", (DWORD)info);
1455
1456         /* FIXME */
1457     }
1458     break;
1459
1460
1461     case 0x001C: /* Enable/Disable Exceptions */
1462         /*
1463          * Input:   ECX: 0 to disable, 1 to enable exception handling
1464          *
1465          * Output:  None
1466          */
1467
1468         TRACE(vxd, "[001c] ECX=%lx\n", ECX_reg(context));
1469
1470         /* FIXME */
1471         break;
1472
1473
1474     case 0x001D: /* VirtualAlloc called from 16-bit code */
1475         /*
1476          * Input:   EDX: Segmented address of arguments on stack
1477          *
1478          *   LPVOID base     [in]  Flat address of region to reserve/commit
1479          *   DWORD  size     [in]  Size of region
1480          *   DWORD  type     [in]  Type of allocation
1481          *   DWORD  prot     [in]  Type of access protection
1482          *
1483          * Output:  EAX: NtStatus
1484          *          EDX: Flat base address of allocated region
1485          */
1486     {
1487         DWORD *stack  = PTR_SEG_OFF_TO_LIN(LOWORD(EDX_reg(context)),
1488                                            HIWORD(EDX_reg(context)));
1489         LPVOID base   = (LPVOID)W32S_APP2WINE(stack[0], W32S_OFFSET);
1490         DWORD  size   = stack[1];
1491         DWORD  type   = stack[2];
1492         DWORD  prot   = stack[3];
1493         DWORD  result;
1494
1495         TRACE(vxd, "VirtualAlloc16(%lx, %lx, %lx, %lx)\n",
1496                    (DWORD)base, size, type, prot);
1497
1498         if (type & 0x80000000)
1499         {
1500             WARN(vxd, "VirtualAlloc16: strange type %lx\n", type);
1501             type &= 0x7fffffff;
1502         }
1503
1504         result = (DWORD)VirtualAlloc(base, size, type, prot);
1505
1506         if (W32S_WINE2APP(result, W32S_OFFSET))
1507             EDX_reg(context) = W32S_WINE2APP(result, W32S_OFFSET),
1508             EAX_reg(context) = STATUS_SUCCESS;
1509         else
1510             EDX_reg(context) = 0,
1511             EAX_reg(context) = STATUS_NO_MEMORY;  /* FIXME */
1512         TRACE(vxd, "VirtualAlloc16: returning base %lx\n", EDX_reg(context));
1513     }
1514     break;
1515
1516
1517     case 0x001E: /* VirtualFree called from 16-bit code */
1518         /*
1519          * Input:   EDX: Segmented address of arguments on stack
1520          *
1521          *   LPVOID base     [in]  Flat address of region
1522          *   DWORD  size     [in]  Size of region
1523          *   DWORD  type     [in]  Type of operation
1524          *
1525          * Output:  EAX: NtStatus
1526          *          EDX: TRUE if success, FALSE if failure
1527          */
1528     {
1529         DWORD *stack  = PTR_SEG_OFF_TO_LIN(LOWORD(EDX_reg(context)),
1530                                            HIWORD(EDX_reg(context)));
1531         LPVOID base   = (LPVOID)W32S_APP2WINE(stack[0], W32S_OFFSET);
1532         DWORD  size   = stack[1];
1533         DWORD  type   = stack[2];
1534         DWORD  result;
1535
1536         TRACE(vxd, "VirtualFree16(%lx, %lx, %lx)\n",
1537                    (DWORD)base, size, type);
1538
1539         result = VirtualFree(base, size, type);
1540
1541         if (result)
1542             EDX_reg(context) = TRUE,
1543             EAX_reg(context) = STATUS_SUCCESS;
1544         else
1545             EDX_reg(context) = FALSE,
1546             EAX_reg(context) = STATUS_NO_MEMORY;  /* FIXME */
1547     }
1548     break;
1549
1550
1551     case 0x001F: /* FWorkingSetSize */
1552         /*
1553          * Input:   EDX: 0 if Get, 1 if Set
1554          *
1555          *          ECX: Get: Buffer to receive Working Set Size
1556          *               Set: Buffer containing Working Set Size
1557          *
1558          * Output:  NtStatus
1559          */
1560     {
1561         DWORD *ptr = (DWORD *)W32S_APP2WINE(ECX_reg(context), W32S_OFFSET);
1562         BOOL32 set = EDX_reg(context);
1563
1564         TRACE(vxd, "FWorkingSetSize(%lx, %lx)\n", (DWORD)ptr, (DWORD)set);
1565
1566         if (set)
1567             /* We do it differently ... */;
1568         else
1569             *ptr = 0x100;
1570
1571         EAX_reg(context) = STATUS_SUCCESS;
1572     }
1573     break;
1574
1575
1576     default:
1577         VXD_BARF( context, "W32S" );
1578     }
1579
1580 }
1581