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] VMM  \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_Shell
 153  */
 154 void WINAPI VXD_Shell( CONTEXT *context )
 155 {
 156     unsigned    service = DX_reg(context);
 157
 158     TRACE(vxd,"[%04x] Shell\n", (UINT16)service);
 159
 160     switch (service) /* Ralf Brown says EDX, but I use DX instead */
 161     {
 162     case 0x0000:
 163         TRACE(vxd,"returning version\n");
 164         AX_reg(context) = VXD_WinVersion();
 165         EBX_reg(context) = 1; /* system VM Handle */
 166         break;
 167
 168     case 0x0001:
 169     case 0x0002:
 170     case 0x0003:
 171     case 0x0004:
 172     case 0x0005:
 173         TRACE(vxd,"VxD Shell: EDX = %08lx\n",EDX_reg(context));
 174         VXD_BARF( context, "shell" );
 175         break;
 176
 177     case 0x0006: /* SHELL_Get_VM_State */
 178         TRACE(vxd,"VxD Shell: returning VM state\n");
 179         /* Actually we don't, not yet. We have to return a structure
 180          * and I am not to sure how to set it up and return it yet,
 181          * so for now let's do nothing. I can (hopefully) get this
 182          * by the next release
 183          */
 184         /* RESET_CFLAG(context); */
 185         break;
 186
 187     case 0x0007:
 188     case 0x0008:
 189     case 0x0009:
 190     case 0x000A:
 191     case 0x000B:
 192     case 0x000C:
 193     case 0x000D:
 194     case 0x000E:
 195     case 0x000F:
 196     case 0x0010:
 197     case 0x0011:
 198     case 0x0012:
 199     case 0x0013:
 200     case 0x0014:
 201     case 0x0015:
 202     case 0x0016:
 203     default:
 204         TRACE(vxd,"VxD Shell: EDX = %08lx\n",EDX_reg(context));
 205         VXD_BARF( context, "shell");
 206         break;
 207     }
 208 }
 209
 210
 211 /***********************************************************************
 212  *           VXD_Comm
 213  */
 214 void WINAPI VXD_Comm( CONTEXT *context )
 215 {
 216     unsigned    service = AX_reg(context);
 217
 218     TRACE(vxd,"[%04x] Comm\n", (UINT16)service);
 219
 220     switch (service)
 221     {
 222     case 0x0000: /* get version */
 223         TRACE(vxd,"returning version\n");
 224         AX_reg(context) = VXD_WinVersion();
 225         RESET_CFLAG(context);
 226         break;
 227
 228     case 0x0001: /* set port global */
 229     case 0x0002: /* get focus */
 230     case 0x0003: /* virtualise port */
 231     default:
 232         VXD_BARF( context, "comm" );
 233     }
 234 }
 235
 236 /***********************************************************************
 237  *           VXD_Timer
 238  */
 239 void VXD_Timer( CONTEXT *context )
 240 {
 241     unsigned service = AX_reg(context);
 242
 243     TRACE(vxd,"[%04x] Virtual Timer\n", (UINT16)service);
 244
 245     switch(service)
 246     {
 247     case 0x0000: /* version */
 248         AX_reg(context) = VXD_WinVersion();
 249         RESET_CFLAG(context);
 250         break;
 251
 252     case 0x0100: /* clock tick time, in 840nsecs */
 253         EAX_reg(context) = GetTickCount();
 254
 255         EDX_reg(context) = EAX_reg(context) >> 22;
 256         EAX_reg(context) <<= 10; /* not very precise */
 257         break;
 258
 259     case 0x0101: /* current Windows time, msecs */
 260     case 0x0102: /* current VM time, msecs */
 261         EAX_reg(context) = GetTickCount();
 262         break;
 263
 264     default:
 265         VXD_BARF( context, "VTD" );
 266     }
 267 }
 268
 269 /***********************************************************************
 270  *           VXD_TimerAPI
 271  */
 272 void VXD_TimerAPI ( CONTEXT *context )
 273 {
 274     static DWORD clockTicks = 0;
 275     static WORD clockTickSelector = 0;
 276
 277     unsigned service = AX_reg(context);
 278
 279     TRACE(vxd,"[%04x] TimerAPI  \n", (UINT16)service);
 280
 281     switch(service)
 282     {
 283     case 0x0000: /* version */
 284         AX_reg(context) = VXD_WinVersion();
 285         RESET_CFLAG(context);
 286         break;
 287
 288     case 0x0009: /* get system time selector */
 289         FIXME(vxd, "Get_System_Time_Selector: this clock doesn't tick!\n");
 290
 291         if ( !clockTickSelector )
 292             clockTickSelector = SELECTOR_AllocBlock( &clockTicks, sizeof(DWORD),
 293                                                      SEGMENT_DATA, FALSE, TRUE );
 294         AX_reg(context) = clockTickSelector;
 295         RESET_CFLAG(context);
 296         break;
 297
 298     default:
 299         VXD_BARF( context, "VTDAPI" );
 300     }
 301 }
 302
 303 /***********************************************************************
 304  *           VXD_ConfigMG
 305  */
 306 void VXD_ConfigMG ( CONTEXT *context )
 307 {
 308     unsigned service = AX_reg(context);
 309
 310     TRACE(vxd,"[%04x] ConfigMG  \n", (UINT16)service);
 311
 312     switch(service)
 313     {
 314     case 0x0000: /* version */
 315         AX_reg(context) = VXD_WinVersion();
 316         RESET_CFLAG(context);
 317         break;
 318
 319     default:
 320         VXD_BARF( context, "CONFIGMG" );
 321     }
 322 }
 323
 324 /***********************************************************************
 325  *           VXD_Win32s
 326  *
 327  * This is an implementation of the services of the Win32s VxD.
 328  * Since official documentation of these does not seem to be available,
 329  * certain arguments of some of the services remain unclear.
 330  *
 331  * FIXME: The following services are currently unimplemented:
 332  *        Exception handling      (0x01, 0x1C)
 333  *        Debugger support        (0x0C, 0x14, 0x17)
 334  *        Low-level memory access (0x02, 0x03, 0x0A, 0x0B)
 335  *        Memory Statistics       (0x1B)
 336  *
 337  *
 338  * We have a specific problem running Win32s on Linux (and probably also
 339  * the other x86 unixes), since Win32s tries to allocate its main 'flat
 340  * code/data segment' selectors with a base of 0xffff0000 (and limit 4GB).
 341  * The rationale for this seems to be that they want one the one hand to
 342  * be able to leave the Win 3.1 memory (starting with the main DOS memory)
 343  * at linear address 0, but want at other hand to have offset 0 of the
 344  * flat data/code segment point to an unmapped page (to catch NULL pointer
 345  * accesses). Hence they allocate the flat segments with a base of 0xffff0000
 346  * so that the Win 3.1 memory area at linear address zero shows up in the
 347  * flat segments at offset 0x10000 (since linear addresses wrap around at
 348  * 4GB). To compensate for that discrepancy between flat segment offsets
 349  * and plain linear addresses, all flat pointers passed between the 32-bit
 350  * and the 16-bit parts of Win32s are shifted by 0x10000 in the appropriate
 351  * direction by the glue code (mainly) in W32SKRNL and WIN32S16.
 352  *
 353  * The problem for us is now that Linux does not allow a LDT selector with
 354  * base 0xffff0000 to be created, since it would 'see' a part of the kernel
 355  * address space. To address this problem we introduce *another* offset:
 356  * We add 0x10000 to every linear address we get as an argument from Win32s.
 357  * This means especially that the flat code/data selectors get actually
 358  * allocated with base 0x0, so that flat offsets and (real) linear addresses
 359  * do again agree!  In fact, every call e.g. of a Win32s VxD service now
 360  * has all pointer arguments (which are offsets in the flat data segement)
 361  * first reduced by 0x10000 by the W32SKRNL glue code, and then again
 362  * increased by 0x10000 by *our* code.
 363  *
 364  * Note that to keep everything consistent, this offset has to be applied by
 365  * every Wine function that operates on 'linear addresses' passed to it by
 366  * Win32s. Fortunately, since Win32s does not directly call any Wine 32-bit
 367  * API routines, this affects only two locations: this VxD and the DPMI
 368  * handler. (NOTE: Should any Win32s application pass a linear address to
 369  * any routine apart from those, e.g. some other VxD handler, that code
 370  * would have to take the offset into account as well!)
 371  *
 372  * The application of the offset is triggered by marking the current process
 373  * as a Win32s process by setting the PDB32_WIN32S_PROC flag in the process
 374  * database. This is done the first time any application calls the GetVersion()
 375  * service of the Win32s VxD. (Note that the flag is never removed.)
 376  *
 377  */
 378
 379 void VXD_Win32s( CONTEXT *context )
 380 {
 381     #define AppToWine(addr) ((addr)? ((LPBYTE)(addr)) + 0x10000 : NULL)
 382     #define WineToApp(addr) ((addr)? ((DWORD) (addr)) - 0x10000 : 0)
 383
 384     switch (AX_reg(context))
 385     {
 386     case 0x0000: /* Get Version */
 387         /*
 388          * Input:   None
 389          *
 390          * Output:  EAX: LoWord: Win32s Version (1.30)
 391          *               HiWord: VxD Version (200)
 392          *
 393          *          EBX: Build (172)
 394          *
 395          *          ECX: ???   (1)
 396          *
 397          *          EDX: Debugging Flags
 398          *
 399          *          EDI: Error Flag
 400          *               0 if OK,
 401          *               1 if VMCPD VxD not found
 402          */
 403
 404         TRACE(vxd, "GetVersion()\n");
 405
 406         EAX_reg(context) = VXD_WinVersion() | (200 << 16);
 407         EBX_reg(context) = 0;
 408         ECX_reg(context) = 0;
 409         EDX_reg(context) = 0;
 410         EDI_reg(context) = 0;
 411
 412         /*
 413          * If this is the first time we are called for this process,
 414          * hack the memory image of WIN32S16 so that it doesn't try
 415          * to access the GDT directly ...
 416          *
 417          * The first code segment of WIN32S16 (version 1.30) contains
 418          * an unexported function somewhere between the exported functions
 419          * SetFS and StackLinearToSegmented that tries to find a selector
 420          * in the LDT that maps to the memory image of the LDT itself.
 421          * If it succeeds, it stores this selector into a global variable
 422          * which will be used to speed up execution by using this selector
 423          * to modify the LDT directly instead of using the DPMI calls.
 424          *
 425          * To perform this search of the LDT, this function uses the
 426          * sgdt and sldt instructions to find the linear address of
 427          * the (GDT and then) LDT. While those instructions themselves
 428          * execute without problem, the linear address that sgdt returns
 429          * points (at least under Linux) to the kernel address space, so
 430          * that any subsequent access leads to a segfault.
 431          *
 432          * Fortunately, WIN32S16 still contains as a fallback option the
 433          * mechanism of using DPMI calls to modify LDT selectors instead
 434          * of direct writes to the LDT. Thus we can circumvent the problem
 435          * by simply replacing the first byte of the offending function
 436          * with an 'retf' instruction. This means that the global variable
 437          * supposed to contain the LDT alias selector will remain zero,
 438          * and hence WIN32S16 will fall back to using DPMI calls.
 439          *
 440          * The heuristic we employ to _find_ that function is as follows:
 441          * We search between the addresses of the exported symbols SetFS
 442          * and StackLinearToSegmented for the byte sequence '0F 01 04'
 443          * (this is the opcode of 'sgdt [si]'). We then search backwards
 444          * from this address for the last occurrance of 'CB' (retf) that marks
 445          * the end of the preceeding function. The following byte (which
 446          * should now be the first byte of the function we are looking for)
 447          * will be replaced by 'CB' (retf).
 448          *
 449          * This heuristic works for the retail as well as the debug version
 450          * of Win32s version 1.30. For versions earlier than that this
 451          * hack should not be necessary at all, since the whole mechanism
 452          * ('PERF130') was introduced only in 1.30 to improve the overall
 453          * performance of Win32s.
 454          */
 455
 456         if (!(PROCESS_Current()->flags & PDB32_WIN32S_PROC))
 457         {
 458             HMODULE16 hModule = GetModuleHandle16("win32s16");
 459             SEGPTR func1 = (SEGPTR)WIN32_GetProcAddress16(hModule, "SetFS");
 460             SEGPTR func2 = (SEGPTR)WIN32_GetProcAddress16(hModule,
 461                                                   "StackLinearToSegmented");
 462
 463             if (   hModule && func1 && func2
 464                 && SELECTOROF(func1) == SELECTOROF(func2))
 465             {
 466                 BYTE *start = PTR_SEG_TO_LIN(func1);
 467                 BYTE *end   = PTR_SEG_TO_LIN(func2);
 468                 BYTE *p, *retv = NULL;
 469                 int found = 0;
 470
 471                 for (p = start; p < end; p++)
 472                     if (*p == 0xCB) found = 0, retv = p;
 473                     else if (*p == 0x0F) found = 1;
 474                     else if (*p == 0x01 && found == 1) found = 2;
 475                     else if (*p == 0x04 && found == 2) { found = 3; break; }
 476                     else found = 0;
 477
 478                 if (found == 3 && retv)
 479                 {
 480                     TRACE(vxd, "PERF130 hack: "
 481                                "Replacing byte %02X at offset %04X:%04X\n",
 482                                *(retv+1), SELECTOROF(func1),
 483                                           OFFSETOF(func1) + retv+1-start);
 484
 485                     *(retv+1) = (BYTE)0xCB;
 486                 }
 487             }
 488         }
 489
 490         /*
 491          * Mark process as Win32s, so that subsequent DPMI calls
 492          * will perform the AppToWine/WineToApp address shift.
 493          */
 494
 495         PROCESS_Current()->flags |= PDB32_WIN32S_PROC;
 496         break;
 497
 498
 499     case 0x0001: /* Install Exception Handling */
 500         /*
 501          * Input:   EBX: Flat address of W32SKRNL Exception Data
 502          *
 503          *          ECX: LoWord: Flat Code Selector
 504          *               HiWord: Flat Data Selector
 505          *
 506          *          EDX: Flat address of W32SKRNL Exception Handler
 507          *               (this is equal to W32S_BackTo32 + 0x40)
 508          *
 509          *          ESI: SEGPTR KERNEL.HASGPHANDLER
 510          *
 511          *          EDI: SEGPTR phCurrentTask (KERNEL.THHOOK + 0x10)
 512          *
 513          * Output:  EAX: 0 if OK
 514          */
 515
 516         TRACE(vxd, "[0001] EBX=%lx ECX=%lx EDX=%lx ESI=%lx EDI=%lx\n",
 517                    EBX_reg(context), ECX_reg(context), EDX_reg(context),
 518                    ESI_reg(context), EDI_reg(context));
 519
 520         /* FIXME */
 521
 522         EAX_reg(context) = 0;
 523         break;
 524
 525
 526     case 0x0002: /* Set Page Access Flags */
 527         /*
 528          * Input:   EBX: New access flags
 529          *               Bit 2: User Page if set, Supervisor Page if clear
 530          *               Bit 1: Read-Write if set, Read-Only if clear
 531          *
 532          *          ECX: Size of memory area to change
 533          *
 534          *          EDX: Flat start address of memory area
 535          *
 536          * Output:  EAX: Size of area changed
 537          */
 538
 539         TRACE(vxd, "[0002] EBX=%lx ECX=%lx EDX=%lx\n",
 540                    EBX_reg(context), ECX_reg(context), EDX_reg(context));
 541
 542         /* FIXME */
 543
 544         EAX_reg(context) = ECX_reg(context);
 545         break;
 546
 547
 548     case 0x0003: /* Get Page Access Flags */
 549         /*
 550          * Input:   EDX: Flat address of page to query
 551          *
 552          * Output:  EAX: Page access flags
 553          *               Bit 2: User Page if set, Supervisor Page if clear
 554          *               Bit 1: Read-Write if set, Read-Only if clear
 555          */
 556
 557         TRACE(vxd, "[0003] EDX=%lx\n", EDX_reg(context));
 558
 559         /* FIXME */
 560
 561         EAX_reg(context) = 6;
 562         break;
 563
 564
 565     case 0x0004: /* Map Module */
 566         /*
 567          * Input:   ECX: IMTE (offset in Module Table) of new module
 568          *
 569          *          EDX: Flat address of Win32s Module Table
 570          *
 571          * Output:  EAX: 0 if OK
 572          */
 573
 574     if (!EDX_reg(context) || CX_reg(context) == 0xFFFF)
 575     {
 576         TRACE(vxd, "MapModule: Initialization call\n");
 577         EAX_reg(context) = 0;
 578     }
 579     else
 580     {
 581         /*
 582          * Structure of a Win32s Module Table Entry:
 583          */
 584         struct Win32sModule
 585         {
 586             DWORD  flags;
 587             DWORD  flatBaseAddr;
 588             LPCSTR moduleName;
 589             LPCSTR pathName;
 590             LPCSTR unknown;
 591             LPBYTE baseAddr;
 592             DWORD  hModule;
 593             DWORD  relocDelta;
 594         };
 595
 596         /*
 597          * Note: This function should set up a demand-paged memory image
 598          *       of the given module. Since mmap does not allow file offsets
 599          *       not aligned at 1024 bytes, we simply load the image fully
 600          *       into memory.
 601          */
 602
 603         struct Win32sModule *moduleTable =
 604                             (struct Win32sModule *)AppToWine(EDX_reg(context));
 605         struct Win32sModule *module = moduleTable + ECX_reg(context);
 606
 607         IMAGE_NT_HEADERS *nt_header = PE_HEADER(module->baseAddr);
 608         IMAGE_SECTION_HEADER *pe_seg = PE_SECTIONS(module->baseAddr);
 609
 610         HFILE32 image = FILE_Open(module->pathName, O_RDONLY,0);
 611         BOOL32 error = (image == INVALID_HANDLE_VALUE32);
 612         UINT32 i;
 613
 614         TRACE(vxd, "MapModule: Loading %s\n", module->pathName);
 615
 616         for (i = 0;
 617              !error && i < nt_header->FileHeader.NumberOfSections;
 618              i++, pe_seg++)
 619             if(!(pe_seg->Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA))
 620             {
 621                 DWORD  off  = pe_seg->PointerToRawData;
 622                 DWORD  len  = pe_seg->SizeOfRawData;
 623                 LPBYTE addr = module->baseAddr + pe_seg->VirtualAddress;
 624
 625                 TRACE(vxd, "MapModule: "
 626                            "Section %d at %08lx from %08lx len %08lx\n",
 627                            i, (DWORD)addr, off, len);
 628
 629                 if (   _llseek32(image, off, SEEK_SET) != off
 630                     || _lread32(image, addr, len) != len)
 631                     error = TRUE;
 632             }
 633
 634         _lclose32(image);
 635
 636         if (error)
 637             ERR(vxd, "MapModule: Unable to load %s\n", module->pathName);
 638
 639         else if (module->relocDelta != 0)
 640         {
 641             IMAGE_DATA_DIRECTORY *dir = nt_header->OptionalHeader.DataDirectory
 642                                       + IMAGE_DIRECTORY_ENTRY_BASERELOC;
 643             IMAGE_BASE_RELOCATION *r = (IMAGE_BASE_RELOCATION *)
 644                 (dir->Size? module->baseAddr + dir->VirtualAddress : 0);
 645
 646             TRACE(vxd, "MapModule: Reloc delta %08lx\n", module->relocDelta);
 647
 648             while (r && r->VirtualAddress)
 649             {
 650                 LPBYTE page  = module->baseAddr + r->VirtualAddress;
 651                 int    count = (r->SizeOfBlock - 8) / 2;
 652
 653                 TRACE(vxd, "MapModule: %d relocations for page %08lx\n",
 654                            count, (DWORD)page);
 655
 656                 for(i = 0; i < count; i++)
 657                 {
 658                     int offset = r->TypeOffset[i] & 0xFFF;
 659                     int type   = r->TypeOffset[i] >> 12;
 660                     switch(type)
 661                     {
 662                     case IMAGE_REL_BASED_ABSOLUTE:
 663                         break;
 664                     case IMAGE_REL_BASED_HIGH:
 665                         *(WORD *)(page+offset) += HIWORD(module->relocDelta);
 666                         break;
 667                     case IMAGE_REL_BASED_LOW:
 668                         *(WORD *)(page+offset) += LOWORD(module->relocDelta);
 669                         break;
 670                     case IMAGE_REL_BASED_HIGHLOW:
 671                         *(DWORD*)(page+offset) += module->relocDelta;
 672                         break;
 673                     default:
 674                         WARN(vxd, "MapModule: Unsupported fixup type\n");
 675                         break;
 676                     }
 677                 }
 678
 679                 r = (IMAGE_BASE_RELOCATION *)((LPBYTE)r + r->SizeOfBlock);
 680             }
 681         }
 682
 683         EAX_reg(context) = 0;
 684         RESET_CFLAG(context);
 685     }
 686     break;
 687
 688
 689     case 0x0005: /* UnMap Module */
 690         /*
 691          * Input:   EDX: Flat address of module image
 692          *
 693          * Output:  EAX: 1 if OK
 694          */
 695
 696         TRACE(vxd, "UnMapModule: %lx\n", (DWORD)AppToWine(EDX_reg(context)));
 697
 698         /* As we didn't map anything, there's nothing to unmap ... */
 699
 700         EAX_reg(context) = 1;
 701         break;
 702
 703
 704     case 0x0006: /* VirtualAlloc */
 705         /*
 706          * Input:   ECX: Current Process
 707          *
 708          *          EDX: Flat address of arguments on stack
 709          *
 710          *   DWORD *retv     [out] Flat base address of allocated region
 711          *   LPVOID base     [in]  Flat address of region to reserve/commit
 712          *   DWORD  size     [in]  Size of region
 713          *   DWORD  type     [in]  Type of allocation
 714          *   DWORD  prot     [in]  Type of access protection
 715          *
 716          * Output:  EAX: NtStatus
 717          */
 718     {
 719         DWORD *stack  = (DWORD *)AppToWine(EDX_reg(context));
 720         DWORD *retv   = (DWORD *)AppToWine(stack[0]);
 721         LPVOID base   = (LPVOID) AppToWine(stack[1]);
 722         DWORD  size   = stack[2];
 723         DWORD  type   = stack[3];
 724         DWORD  prot   = stack[4];
 725         DWORD  result;
 726
 727         TRACE(vxd, "VirtualAlloc(%lx, %lx, %lx, %lx, %lx)\n",
 728                    (DWORD)retv, (DWORD)base, size, type, prot);
 729
 730         if (type & 0x80000000)
 731         {
 732             WARN(vxd, "VirtualAlloc: strange type %lx\n", type);
 733             type &= 0x7fffffff;
 734         }
 735
 736         if (!base && (type & MEM_COMMIT) && prot == PAGE_READONLY)
 737         {
 738             WARN(vxd, "VirtualAlloc: NLS hack, allowing write access!\n");
 739             prot = PAGE_READWRITE;
 740         }
 741
 742         result = (DWORD)VirtualAlloc(base, size, type, prot);
 743
 744         if (WineToApp(result))
 745             *retv            = WineToApp(result),
 746             EAX_reg(context) = STATUS_SUCCESS;
 747         else
 748             *retv            = 0,
 749             EAX_reg(context) = STATUS_NO_MEMORY;  /* FIXME */
 750     }
 751     break;
 752
 753
 754     case 0x0007: /* VirtualFree */
 755         /*
 756          * Input:   ECX: Current Process
 757          *
 758          *          EDX: Flat address of arguments on stack
 759          *
 760          *   DWORD *retv     [out] TRUE if success, FALSE if failure
 761          *   LPVOID base     [in]  Flat address of region
 762          *   DWORD  size     [in]  Size of region
 763          *   DWORD  type     [in]  Type of operation
 764          *
 765          * Output:  EAX: NtStatus
 766          */
 767     {
 768         DWORD *stack  = (DWORD *)AppToWine(EDX_reg(context));
 769         DWORD *retv   = (DWORD *)AppToWine(stack[0]);
 770         LPVOID base   = (LPVOID) AppToWine(stack[1]);
 771         DWORD  size   = stack[2];
 772         DWORD  type   = stack[3];
 773         DWORD  result;
 774
 775         TRACE(vxd, "VirtualFree(%lx, %lx, %lx, %lx)\n",
 776                    (DWORD)retv, (DWORD)base, size, type);
 777
 778         result = VirtualFree(base, size, type);
 779
 780         if (result)
 781             *retv            = TRUE,
 782             EAX_reg(context) = STATUS_SUCCESS;
 783         else
 784             *retv            = FALSE,
 785             EAX_reg(context) = STATUS_NO_MEMORY;  /* FIXME */
 786     }
 787     break;
 788
 789
 790     case 0x0008: /* VirtualProtect */
 791         /*
 792          * Input:   ECX: Current Process
 793          *
 794          *          EDX: Flat address of arguments on stack
 795          *
 796          *   DWORD *retv     [out] TRUE if success, FALSE if failure
 797          *   LPVOID base     [in]  Flat address of region
 798          *   DWORD  size     [in]  Size of region
 799          *   DWORD  new_prot [in]  Desired access protection
 800          *   DWORD *old_prot [out] Previous access protection
 801          *
 802          * Output:  EAX: NtStatus
 803          */
 804     {
 805         DWORD *stack    = (DWORD *)AppToWine(EDX_reg(context));
 806         DWORD *retv     = (DWORD *)AppToWine(stack[0]);
 807         LPVOID base     = (LPVOID) AppToWine(stack[1]);
 808         DWORD  size     = stack[2];
 809         DWORD  new_prot = stack[3];
 810         DWORD *old_prot = (DWORD *)AppToWine(stack[4]);
 811         DWORD  result;
 812
 813         TRACE(vxd, "VirtualProtect(%lx, %lx, %lx, %lx, %lx)\n",
 814                    (DWORD)retv, (DWORD)base, size, new_prot, (DWORD)old_prot);
 815
 816         result = VirtualProtect(base, size, new_prot, old_prot);
 817
 818         if (result)
 819             *retv            = TRUE,
 820             EAX_reg(context) = STATUS_SUCCESS;
 821         else
 822             *retv            = FALSE,
 823             EAX_reg(context) = STATUS_NO_MEMORY;  /* FIXME */
 824     }
 825     break;
 826
 827
 828     case 0x0009: /* VirtualQuery */
 829         /*
 830          * Input:   ECX: Current Process
 831          *
 832          *          EDX: Flat address of arguments on stack
 833          *
 834          *   DWORD *retv                     [out] Nr. bytes returned
 835          *   LPVOID base                     [in]  Flat address of region
 836          *   LPMEMORY_BASIC_INFORMATION info [out] Info buffer
 837          *   DWORD  len                      [in]  Size of buffer
 838          *
 839          * Output:  EAX: NtStatus
 840          */
 841     {
 842         DWORD *stack  = (DWORD *)AppToWine(EDX_reg(context));
 843         DWORD *retv   = (DWORD *)AppToWine(stack[0]);
 844         LPVOID base   = (LPVOID) AppToWine(stack[1]);
 845         LPMEMORY_BASIC_INFORMATION info =
 846                         (LPMEMORY_BASIC_INFORMATION)AppToWine(stack[2]);
 847         DWORD  len    = stack[3];
 848         DWORD  result;
 849
 850         TRACE(vxd, "VirtualQuery(%lx, %lx, %lx, %lx)\n",
 851                    (DWORD)retv, (DWORD)base, (DWORD)info, len);
 852
 853         result = VirtualQuery(base, info, len);
 854
 855         *retv            = result;
 856         EAX_reg(context) = STATUS_SUCCESS;
 857     }
 858     break;
 859
 860
 861     case 0x000A: /* SetVirtMemProcess */
 862         /*
 863          * Input:   ECX: Process Handle
 864          *
 865          *          EDX: Flat address of region
 866          *
 867          * Output:  EAX: NtStatus
 868          */
 869
 870         TRACE(vxd, "[000a] ECX=%lx EDX=%lx\n",
 871                    ECX_reg(context), EDX_reg(context));
 872
 873         /* FIXME */
 874
 875         EAX_reg(context) = STATUS_SUCCESS;
 876         break;
 877
 878
 879     case 0x000B: /* ??? some kind of cleanup */
 880         /*
 881          * Input:   ECX: Process Handle
 882          *
 883          * Output:  EAX: NtStatus
 884          */
 885
 886         TRACE(vxd, "[000b] ECX=%lx\n", ECX_reg(context));
 887
 888         /* FIXME */
 889
 890         EAX_reg(context) = STATUS_SUCCESS;
 891         break;
 892
 893
 894     case 0x000C: /* Set Debug Flags */
 895         /*
 896          * Input:   EDX: Debug Flags
 897          *
 898          * Output:  EDX: Previous Debug Flags
 899          */
 900
 901         FIXME(vxd, "[000c] EDX=%lx\n", EDX_reg(context));
 902
 903         /* FIXME */
 904
 905         EDX_reg(context) = 0;
 906         break;
 907
 908
 909     case 0x000D: /* NtCreateSection */
 910         /*
 911          * Input:   EDX: Flat address of arguments on stack
 912          *
 913          *   HANDLE32 *retv      [out] Handle of Section created
 914          *   DWORD  flags1       [in]  (?? unknown ??)
 915          *   DWORD  atom         [in]  Name of Section to create
 916          *   LARGE_INTEGER *size [in]  Size of Section
 917          *   DWORD  protect      [in]  Access protection
 918          *   DWORD  flags2       [in]  (?? unknown ??)
 919          *   HFILE32 hFile       [in]  Handle of file to map
 920          *   DWORD  psp          [in]  (Win32s: PSP that hFile belongs to)
 921          *
 922          * Output:  EAX: NtStatus
 923          */
 924     {
 925         DWORD *stack    = (DWORD *)   AppToWine(EDX_reg(context));
 926         HANDLE32 *retv  = (HANDLE32 *)AppToWine(stack[0]);
 927         DWORD  flags1   = stack[1];
 928         DWORD  atom     = stack[2];
 929         LARGE_INTEGER *size = (LARGE_INTEGER *)AppToWine(stack[3]);
 930         DWORD  protect  = stack[4];
 931         DWORD  flags2   = stack[5];
 932         HFILE32 hFile   = HFILE16_TO_HFILE32(stack[6]);
 933         DWORD  psp      = stack[7];
 934
 935         HANDLE32 result = INVALID_HANDLE_VALUE32;
 936         char name[128];
 937
 938         TRACE(vxd, "NtCreateSection(%lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx)\n",
 939                    (DWORD)retv, flags1, atom, (DWORD)size, protect, flags2,
 940                    (DWORD)hFile, psp);
 941
 942         if (!atom || GlobalGetAtomName32A(atom, name, sizeof(name)))
 943         {
 944             TRACE(vxd, "NtCreateSection: name=%s\n", atom? name : NULL);
 945
 946             result = CreateFileMapping32A(hFile, NULL, protect,
 947                                           size? size->HighPart : 0,
 948                                           size? size->LowPart  : 0,
 949                                           atom? name : NULL);
 950         }
 951
 952         if (result == INVALID_HANDLE_VALUE32)
 953             WARN(vxd, "NtCreateSection: failed!\n");
 954         else
 955             TRACE(vxd, "NtCreateSection: returned %lx\n", (DWORD)result);
 956
 957         if (result != INVALID_HANDLE_VALUE32)
 958             *retv            = result,
 959             EAX_reg(context) = STATUS_SUCCESS;
 960         else
 961             *retv            = result,
 962             EAX_reg(context) = STATUS_NO_MEMORY;   /* FIXME */
 963     }
 964     break;
 965
 966
 967     case 0x000E: /* NtOpenSection */
 968         /*
 969          * Input:   EDX: Flat address of arguments on stack
 970          *
 971          *   HANDLE32 *retv  [out] Handle of Section opened
 972          *   DWORD  protect  [in]  Access protection
 973          *   DWORD  atom     [in]  Name of Section to create
 974          *
 975          * Output:  EAX: NtStatus
 976          */
 977     {
 978         DWORD *stack    = (DWORD *)   AppToWine(EDX_reg(context));
 979         HANDLE32 *retv  = (HANDLE32 *)AppToWine(stack[0]);
 980         DWORD  protect  = stack[1];
 981         DWORD  atom     = stack[2];
 982
 983         HANDLE32 result = INVALID_HANDLE_VALUE32;
 984         char name[128];
 985
 986         TRACE(vxd, "NtOpenSection(%lx, %lx, %lx)\n",
 987                    (DWORD)retv, protect, atom);
 988
 989         if (atom && GlobalGetAtomName32A(atom, name, sizeof(name)))
 990         {
 991             TRACE(vxd, "NtOpenSection: name=%s\n", name);
 992
 993             result = OpenFileMapping32A(protect, FALSE, name);
 994         }
 995
 996         if (result == INVALID_HANDLE_VALUE32)
 997             WARN(vxd, "NtOpenSection: failed!\n");
 998         else
 999             TRACE(vxd, "NtOpenSection: returned %lx\n", (DWORD)result);
1000
1001         if (result != INVALID_HANDLE_VALUE32)
1002             *retv            = result,
1003             EAX_reg(context) = STATUS_SUCCESS;
1004         else
1005             *retv            = result,
1006             EAX_reg(context) = STATUS_NO_MEMORY;   /* FIXME */
1007     }
1008     break;
1009
1010
1011     case 0x000F: /* NtCloseSection */
1012         /*
1013          * Input:   EDX: Flat address of arguments on stack
1014          *
1015          *   HANDLE32 handle  [in]  Handle of Section to close
1016          *   DWORD *id        [out] Unique ID  (?? unclear ??)
1017          *
1018          * Output:  EAX: NtStatus
1019          */
1020     {
1021         DWORD *stack    = (DWORD *)AppToWine(EDX_reg(context));
1022         HANDLE32 handle = stack[0];
1023         DWORD *id       = (DWORD *)AppToWine(stack[1]);
1024
1025         TRACE(vxd, "NtCloseSection(%lx, %lx)\n", (DWORD)handle, (DWORD)id);
1026
1027         CloseHandle(handle);
1028         if (id) *id = 0; /* FIXME */
1029
1030         EAX_reg(context) = STATUS_SUCCESS;
1031     }
1032     break;
1033
1034
1035     case 0x0010: /* NtDupSection */
1036         /*
1037          * Input:   EDX: Flat address of arguments on stack
1038          *
1039          *   HANDLE32 handle  [in]  Handle of Section to duplicate
1040          *
1041          * Output:  EAX: NtStatus
1042          */
1043     {
1044         DWORD *stack    = (DWORD *)AppToWine(EDX_reg(context));
1045         HANDLE32 handle = stack[0];
1046
1047         TRACE(vxd, "NtDupSection(%lx)\n", (DWORD)handle);
1048
1049         /* Handle is 'duplicated' by incrementing RefCount */
1050         HANDLE_GetObjPtr(PROCESS_Current(), handle, K32OBJ_MEM_MAPPED_FILE, 0,NULL);
1051
1052         EAX_reg(context) = STATUS_SUCCESS;
1053     }
1054     break;
1055
1056
1057     case 0x0011: /* NtMapViewOfSection */
1058         /*
1059          * Input:   EDX: Flat address of arguments on stack
1060          *
1061          *   HANDLE32 SectionHandle       [in]     Section to be mapped
1062          *   DWORD    ProcessHandle       [in]     Process to be mapped into
1063          *   DWORD *  BaseAddress         [in/out] Address to be mapped at
1064          *   DWORD    ZeroBits            [in]     (?? unclear ??)
1065          *   DWORD    CommitSize          [in]     (?? unclear ??)
1066          *   LARGE_INTEGER *SectionOffset [in]     Offset within section
1067          *   DWORD *  ViewSize            [in]     Size of view
1068          *   DWORD    InheritDisposition  [in]     (?? unclear ??)
1069          *   DWORD    AllocationType      [in]     (?? unclear ??)
1070          *   DWORD    Protect             [in]     Access protection
1071          *
1072          * Output:  EAX: NtStatus
1073          */
1074     {
1075         DWORD *  stack          = (DWORD *)AppToWine(EDX_reg(context));
1076         HANDLE32 SectionHandle  = stack[0];
1077         DWORD    ProcessHandle  = stack[1]; /* ignored */
1078         DWORD *  BaseAddress    = (DWORD *)AppToWine(stack[2]);
1079         DWORD    ZeroBits       = stack[3];
1080         DWORD    CommitSize     = stack[4];
1081         LARGE_INTEGER *SectionOffset = (LARGE_INTEGER *)AppToWine(stack[5]);
1082         DWORD *  ViewSize       = (DWORD *)AppToWine(stack[6]);
1083         DWORD    InheritDisposition = stack[7];
1084         DWORD    AllocationType = stack[8];
1085         DWORD    Protect        = stack[9];
1086
1087         LPBYTE address = (LPBYTE)(BaseAddress? AppToWine(*BaseAddress) : 0);
1088         DWORD  access = 0, result;
1089
1090         switch (Protect & ~(PAGE_GUARD|PAGE_NOCACHE))
1091         {
1092             case PAGE_READONLY:           access = FILE_MAP_READ;  break;
1093             case PAGE_READWRITE:          access = FILE_MAP_WRITE; break;
1094             case PAGE_WRITECOPY:          access = FILE_MAP_COPY;  break;
1095
1096             case PAGE_EXECUTE_READ:       access = FILE_MAP_READ;  break;
1097             case PAGE_EXECUTE_READWRITE:  access = FILE_MAP_WRITE; break;
1098             case PAGE_EXECUTE_WRITECOPY:  access = FILE_MAP_COPY;  break;
1099         }
1100
1101         TRACE(vxd, "NtMapViewOfSection"
1102                    "(%lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx)\n",
1103                    (DWORD)SectionHandle, ProcessHandle, (DWORD)BaseAddress,
1104                    ZeroBits, CommitSize, (DWORD)SectionOffset, (DWORD)ViewSize,
1105                    InheritDisposition, AllocationType, Protect);
1106         TRACE(vxd, "NtMapViewOfSection: "
1107                    "base=%lx, offset=%lx, size=%lx, access=%lx\n",
1108                    (DWORD)address, SectionOffset? SectionOffset->LowPart : 0,
1109                    ViewSize? *ViewSize : 0, access);
1110
1111         result = (DWORD)MapViewOfFileEx(SectionHandle, access,
1112                             SectionOffset? SectionOffset->HighPart : 0,
1113                             SectionOffset? SectionOffset->LowPart  : 0,
1114                             ViewSize? *ViewSize : 0, address);
1115
1116         TRACE(vxd, "NtMapViewOfSection: result=%lx\n", result);
1117
1118         if (WineToApp(result))
1119         {
1120             if (BaseAddress) *BaseAddress = WineToApp(result);
1121             EAX_reg(context) = STATUS_SUCCESS;
1122         }
1123         else
1124             EAX_reg(context) = STATUS_NO_MEMORY; /* FIXME */
1125     }
1126     break;
1127
1128
1129     case 0x0012: /* NtUnmapViewOfSection */
1130         /*
1131          * Input:   EDX: Flat address of arguments on stack
1132          *
1133          *   DWORD  ProcessHandle  [in]  Process (defining address space)
1134          *   LPBYTE BaseAddress    [in]  Base address of view to be unmapped
1135          *
1136          * Output:  EAX: NtStatus
1137          */
1138     {
1139         DWORD *stack          = (DWORD *)AppToWine(EDX_reg(context));
1140         DWORD  ProcessHandle  = stack[0]; /* ignored */
1141         LPBYTE BaseAddress    = (LPBYTE)AppToWine(stack[1]);
1142
1143         TRACE(vxd, "NtUnmapViewOfSection(%lx, %lx)\n",
1144                    ProcessHandle, (DWORD)BaseAddress);
1145
1146         UnmapViewOfFile(BaseAddress);
1147
1148         EAX_reg(context) = STATUS_SUCCESS;
1149     }
1150     break;
1151
1152
1153     case 0x0013: /* NtFlushVirtualMemory */
1154         /*
1155          * Input:   EDX: Flat address of arguments on stack
1156          *
1157          *   DWORD   ProcessHandle  [in]  Process (defining address space)
1158          *   LPBYTE *BaseAddress    [in?] Base address of range to be flushed
1159          *   DWORD  *ViewSize       [in?] Number of bytes to be flushed
1160          *   DWORD  *unknown        [???] (?? unknown ??)
1161          *
1162          * Output:  EAX: NtStatus
1163          */
1164     {
1165         DWORD *stack          = (DWORD *)AppToWine(EDX_reg(context));
1166         DWORD  ProcessHandle  = stack[0]; /* ignored */
1167         DWORD *BaseAddress    = (DWORD *)AppToWine(stack[1]);
1168         DWORD *ViewSize       = (DWORD *)AppToWine(stack[2]);
1169         DWORD *unknown        = (DWORD *)AppToWine(stack[3]);
1170
1171         LPBYTE address = (LPBYTE)(BaseAddress? AppToWine(*BaseAddress) : 0);
1172         DWORD  size    = ViewSize? *ViewSize : 0;
1173
1174         TRACE(vxd, "NtFlushVirtualMemory(%lx, %lx, %lx, %lx)\n",
1175                    ProcessHandle, (DWORD)BaseAddress, (DWORD)ViewSize,
1176                    (DWORD)unknown);
1177         TRACE(vxd, "NtFlushVirtualMemory: base=%lx, size=%lx\n",
1178                    (DWORD)address, size);
1179
1180         FlushViewOfFile(address, size);
1181
1182         EAX_reg(context) = STATUS_SUCCESS;
1183     }
1184     break;
1185
1186
1187     case 0x0014: /* Get/Set Debug Registers */
1188         /*
1189          * Input:   ECX: 0 if Get, 1 if Set
1190          *
1191          *          EDX: Get: Flat address of buffer to receive values of
1192          *                    debug registers DR0 .. DR7
1193          *               Set: Flat address of buffer containing values of
1194          *                    debug registers DR0 .. DR7 to be set
1195          * Output:  None
1196          */
1197
1198         FIXME(vxd, "[0014] ECX=%lx EDX=%lx\n",
1199                    ECX_reg(context), EDX_reg(context));
1200
1201         /* FIXME */
1202         break;
1203
1204
1205     case 0x0015: /* Set Coprocessor Emulation Flag */
1206         /*
1207          * Input:   EDX: 0 to deactivate, 1 to activate coprocessor emulation
1208          *
1209          * Output:  None
1210          */
1211
1212         TRACE(vxd, "[0015] EDX=%lx\n", EDX_reg(context));
1213
1214         /* We don't care, as we always have a coprocessor anyway */
1215         break;
1216
1217
1218     case 0x0016: /* Init Win32S VxD PSP */
1219         /*
1220          * If called to query required PSP size:
1221          *
1222          *     Input:  EBX: 0
1223          *     Output: EDX: Required size of Win32s VxD PSP
1224          *
1225          * If called to initialize allocated PSP:
1226          *
1227          *     Input:  EBX: LoWord: Selector of Win32s VxD PSP
1228          *                  HiWord: Paragraph of Win32s VxD PSP (DOSMEM)
1229          *     Output: None
1230          */
1231
1232         if (EBX_reg(context) == 0)
1233             EDX_reg(context) = 0x80;
1234         else
1235         {
1236             PDB *psp = PTR_SEG_OFF_TO_LIN(BX_reg(context), 0);
1237             psp->nbFiles = 32;
1238             psp->fileHandlesPtr = MAKELONG(HIWORD(EBX_reg(context)), 0x5c);
1239             memset((LPBYTE)psp + 0x5c, '\xFF', 32);
1240         }
1241         break;
1242
1243
1244     case 0x0017: /* Set Break Point */
1245         /*
1246          * Input:   EBX: Offset of Break Point
1247          *          CX:  Selector of Break Point
1248          *
1249          * Output:  None
1250          */
1251
1252         FIXME(vxd, "[0017] EBX=%lx CX=%x\n",
1253                    EBX_reg(context), CX_reg(context));
1254
1255         /* FIXME */
1256         break;
1257
1258
1259     case 0x0018: /* VirtualLock */
1260         /*
1261          * Input:   ECX: Current Process
1262          *
1263          *          EDX: Flat address of arguments on stack
1264          *
1265          *   DWORD *retv     [out] TRUE if success, FALSE if failure
1266          *   LPVOID base     [in]  Flat address of range to lock
1267          *   DWORD  size     [in]  Size of range
1268          *
1269          * Output:  EAX: NtStatus
1270          */
1271     {
1272         DWORD *stack  = (DWORD *)AppToWine(EDX_reg(context));
1273         DWORD *retv   = (DWORD *)AppToWine(stack[0]);
1274         LPVOID base   = (LPVOID) AppToWine(stack[1]);
1275         DWORD  size   = stack[2];
1276         DWORD  result;
1277
1278         TRACE(vxd, "VirtualLock(%lx, %lx, %lx)\n",
1279                    (DWORD)retv, (DWORD)base, size);
1280
1281         result = VirtualLock(base, size);
1282
1283         if (result)
1284             *retv            = TRUE,
1285             EAX_reg(context) = STATUS_SUCCESS;
1286         else
1287             *retv            = FALSE,
1288             EAX_reg(context) = STATUS_NO_MEMORY;  /* FIXME */
1289     }
1290     break;
1291
1292
1293     case 0x0019: /* VirtualUnlock */
1294         /*
1295          * Input:   ECX: Current Process
1296          *
1297          *          EDX: Flat address of arguments on stack
1298          *
1299          *   DWORD *retv     [out] TRUE if success, FALSE if failure
1300          *   LPVOID base     [in]  Flat address of range to unlock
1301          *   DWORD  size     [in]  Size of range
1302          *
1303          * Output:  EAX: NtStatus
1304          */
1305     {
1306         DWORD *stack  = (DWORD *)AppToWine(EDX_reg(context));
1307         DWORD *retv   = (DWORD *)AppToWine(stack[0]);
1308         LPVOID base   = (LPVOID) AppToWine(stack[1]);
1309         DWORD  size   = stack[2];
1310         DWORD  result;
1311
1312         TRACE(vxd, "VirtualUnlock(%lx, %lx, %lx)\n",
1313                    (DWORD)retv, (DWORD)base, size);
1314
1315         result = VirtualUnlock(base, size);
1316
1317         if (result)
1318             *retv            = TRUE,
1319             EAX_reg(context) = STATUS_SUCCESS;
1320         else
1321             *retv            = FALSE,
1322             EAX_reg(context) = STATUS_NO_MEMORY;  /* FIXME */
1323     }
1324     break;
1325
1326
1327     case 0x001A: /* KGetSystemInfo */
1328         /*
1329          * Input:   None
1330          *
1331          * Output:  ECX:  Start of sparse memory arena
1332          *          EDX:  End of sparse memory arena
1333          */
1334
1335         TRACE(vxd, "KGetSystemInfo()\n");
1336
1337         /*
1338          * Note: Win32s reserves 0GB - 2GB for Win 3.1 and uses 2GB - 4GB as
1339          *       sparse memory arena. We do it the other way around, since
1340          *       we have to reserve 3GB - 4GB for Linux, and thus use
1341          *       0GB - 3GB as sparse memory arena.
1342          *
1343          *       FIXME: What about other OSes ?
1344          */
1345
1346         ECX_reg(context) = WineToApp(0x00000000);
1347         EDX_reg(context) = WineToApp(0xbfffffff);
1348         break;
1349
1350
1351     case 0x001B: /* KGlobalMemStat */
1352         /*
1353          * Input:   ESI: Flat address of buffer to receive memory info
1354          *
1355          * Output:  None
1356          */
1357     {
1358         struct Win32sMemoryInfo
1359         {
1360             DWORD DIPhys_Count;       /* Total physical pages */
1361             DWORD DIFree_Count;       /* Free physical pages */
1362             DWORD DILin_Total_Count;  /* Total virtual pages (private arena) */
1363             DWORD DILin_Total_Free;   /* Free virtual pages (private arena) */
1364
1365             DWORD SparseTotal;        /* Total size of sparse arena (bytes ?) */
1366             DWORD SparseFree;         /* Free size of sparse arena (bytes ?) */
1367         };
1368
1369         struct Win32sMemoryInfo *info =
1370                        (struct Win32sMemoryInfo *)AppToWine(ESI_reg(context));
1371
1372         FIXME(vxd, "KGlobalMemStat(%lx)\n", (DWORD)info);
1373
1374         /* FIXME */
1375     }
1376     break;
1377
1378
1379     case 0x001C: /* Enable/Disable Exceptions */
1380         /*
1381          * Input:   ECX: 0 to disable, 1 to enable exception handling
1382          *
1383          * Output:  None
1384          */
1385
1386         TRACE(vxd, "[001c] ECX=%lx\n", ECX_reg(context));
1387
1388         /* FIXME */
1389         break;
1390
1391
1392     case 0x001D: /* VirtualAlloc called from 16-bit code */
1393         /*
1394          * Input:   EDX: Segmented address of arguments on stack
1395          *
1396          *   LPVOID base     [in]  Flat address of region to reserve/commit
1397          *   DWORD  size     [in]  Size of region
1398          *   DWORD  type     [in]  Type of allocation
1399          *   DWORD  prot     [in]  Type of access protection
1400          *
1401          * Output:  EAX: NtStatus
1402          *          EDX: Flat base address of allocated region
1403          */
1404     {
1405         DWORD *stack  = PTR_SEG_OFF_TO_LIN(LOWORD(EDX_reg(context)),
1406                                            HIWORD(EDX_reg(context)));
1407         LPVOID base   = (LPVOID)AppToWine(stack[0]);
1408         DWORD  size   = stack[1];
1409         DWORD  type   = stack[2];
1410         DWORD  prot   = stack[3];
1411         DWORD  result;
1412
1413         TRACE(vxd, "VirtualAlloc16(%lx, %lx, %lx, %lx)\n",
1414                    (DWORD)base, size, type, prot);
1415
1416         if (type & 0x80000000)
1417         {
1418             WARN(vxd, "VirtualAlloc16: strange type %lx\n", type);
1419             type &= 0x7fffffff;
1420         }
1421
1422         result = (DWORD)VirtualAlloc(base, size, type, prot);
1423
1424         if (WineToApp(result))
1425             EDX_reg(context) = WineToApp(result),
1426             EAX_reg(context) = STATUS_SUCCESS;
1427         else
1428             EDX_reg(context) = 0,
1429             EAX_reg(context) = STATUS_NO_MEMORY;  /* FIXME */
1430     }
1431     break;
1432
1433
1434     case 0x001E: /* VirtualFree called from 16-bit code */
1435         /*
1436          * Input:   EDX: Segmented address of arguments on stack
1437          *
1438          *   LPVOID base     [in]  Flat address of region
1439          *   DWORD  size     [in]  Size of region
1440          *   DWORD  type     [in]  Type of operation
1441          *
1442          * Output:  EAX: NtStatus
1443          *          EDX: TRUE if success, FALSE if failure
1444          */
1445     {
1446         DWORD *stack  = PTR_SEG_OFF_TO_LIN(LOWORD(EDX_reg(context)),
1447                                            HIWORD(EDX_reg(context)));
1448         LPVOID base   = (LPVOID)AppToWine(stack[0]);
1449         DWORD  size   = stack[1];
1450         DWORD  type   = stack[2];
1451         DWORD  result;
1452
1453         TRACE(vxd, "VirtualFree16(%lx, %lx, %lx)\n",
1454                    (DWORD)base, size, type);
1455
1456         result = VirtualFree(base, size, type);
1457
1458         if (result)
1459             EDX_reg(context) = TRUE,
1460             EAX_reg(context) = STATUS_SUCCESS;
1461         else
1462             EDX_reg(context) = FALSE,
1463             EAX_reg(context) = STATUS_NO_MEMORY;  /* FIXME */
1464     }
1465     break;
1466
1467
1468     case 0x001F: /* FWorkingSetSize */
1469         /*
1470          * Input:   EDX: 0 if Get, 1 if Set
1471          *
1472          *          ECX: Get: Buffer to receive Working Set Size
1473          *               Set: Buffer containing Working Set Size
1474          *
1475          * Output:  NtStatus
1476          */
1477     {
1478         DWORD *ptr = (DWORD *)AppToWine(ECX_reg(context));
1479         BOOL32 set = EDX_reg(context);
1480
1481         TRACE(vxd, "FWorkingSetSize(%lx, %lx)\n", (DWORD)ptr, (DWORD)set);
1482
1483         if (set)
1484             /* We do it differently ... */;
1485         else
1486             *ptr = 0x100;
1487
1488         EAX_reg(context) = STATUS_SUCCESS;
1489     }
1490     break;
1491
1492
1493     default:
1494         VXD_BARF( context, "W32S" );
1495     }
1496
1497     #undef AppToWine
1498     #undef WineToApp
1499 }
1500