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Leaked source code of windows server 2003
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windows-server-2003/multimedia/media/avi/inc.16/dpmi.inc

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  1. COMMENT #
  2. //***************************************************************************
  3. //
  4. //
  5. //
  6. // Microsoft Confidential
  7. // Copyright (c) Microsoft Corporation 1992-1993
  8. // All rights reserved
  9. //
  10. // Include file for using DPMI functionality in Windows.
  11. //
  12. //***************************************************************************
  13. END COMMENT #
  16. DPMI EQU 031h ; DPMI interrupt vector
  17. ALLOC_LDT_DESC EQU 0000h
  18. SEG_TO_DESC EQU 0002h
  19. SET_SEG_BASE_ADDR EQU 0007h
  20. SET_SEG_LIMIT EQU 0008h
  21. ALLOC_DOS_MEM_BLOCK EQU 0100h
  22. FREE_DOS_MEM_BLOCK EQU 0101h
  23. SET_REALMODE_INTVEC EQU 0201h
  24. GET_REALMODE_INTVEC EQU 0200h
  25. SIMULATE_RELMODE_INT EQU 0300h
  26. CALL_REALMODE_PROC EQU 0301h
  28. ; ***************************************************************************
  30. EXTERNDEF C IsWindows:WORD
  31. EXTERNDEF C IntVector:WORD
  32. EXTERNDEF C DosMem:DWORD
  34. ; ***************************************************************************
  35. ;
  36. ; Macro for simulating a real mode interrupt from protect mode using DPMI.
  37. ; Before invoking the macro the registers should be setup for the desired
  38. ; real mode interrupt call. All register pointer must be to real mode
  39. ; memory obtained via DPMI.
  40. ;
  41. ; ***************************************************************************
  43. DpmiInt MACRO Vector:REQ
  44. LOCAL IsDos ; Local label
  45. LOCAL EndMacro ; Local labe
  47. cmp IsWindows, 0 ; See if a Windows app
  48. je IsDos ; If not not Windows use DOS int
  50. mov IntVector, Vector ; Set vector to simulate
  51. call GenericDpmi ; Call generic DPMI function
  52. jmp SHORT EndMacro
  54. IsDos:
  55. int Vector ; Do DOS interrupt
  57. EndMacro:
  59. ENDM
  61. ; ***************************************************************************
  62. ;
  63. ; Real Mode call structure for Simulating Real Mode Interrupts using DPMI
  64. ;
  65. ; ***************************************************************************
  67. RealModeCallStruc Struc
  69. RegEDI dd ?
  70. RegESI dd ?
  71. RegEBP dd ?
  72. Regres dd ?
  73. RegEBX dd ?
  74. RegEDX dd ?
  75. RegECX dd ?
  76. RegEAX dd ?
  77. RegFlg dw ?
  78. RegES dw ?
  79. RegDS dw ?
  80. RegFS dw ?
  81. RegGS dw ?
  82. RegIP dw ?
  83. RegCS dw ?
  84. RegSP dw ?
  85. RegSS dw ?
  87. RealModeCallStruc Ends
  90. ; ***************************************************************************
  91. ;
  92. ; Real Mode call structure for Simulating Real Mode Interrupts using DPMI
  93. ;
  94. ; ***************************************************************************
  96. @proto_100 TYPEDEF PROTO C
  97. GenericDpmi PROTO @proto_100
  99. @proto_101 TYPEDEF PROTO C
  100. DpmiDskRdWr PROTO @proto_101