2 * COPYRIGHT: GPL - See COPYING in the top level directory
3 * PROJECT: ReactOS Virtual DOS Machine
4 * FILE: dos/dos32krnl/dos.h
5 * PURPOSE: DOS32 Kernel
6 * PROGRAMMERS: Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
12 /* INCLUDES *******************************************************************/
16 /**/ #include "callback.h" /**/
18 /* DEFINES ********************************************************************/
21 // We are DOS 5.00 (reported by INT 21h, AH=30h)
22 // and DOS 5.50 (reported by INT 21h, AX=3306h) for Windows NT Compatibility
24 #define DOS_VERSION MAKEWORD(5, 00)
25 #define NTDOS_VERSION MAKEWORD(5, 50)
27 #define DOS_CONFIG_PATH L"%SystemRoot%\\system32\\CONFIG.NT"
28 #define DOS_COMMAND_INTERPRETER L"%SystemRoot%\\system32\\COMMAND.COM /k %SystemRoot%\\system32\\AUTOEXEC.NT"
29 #define FIRST_MCB_SEGMENT 0x1000
30 #define USER_MEMORY_SIZE (0x9FFE - FIRST_MCB_SEGMENT)
31 #define SYSTEM_PSP 0x08
32 #define SYSTEM_ENV_BLOCK 0x800
34 #define INVALID_DOS_HANDLE 0xFFFF
35 #define DOS_INPUT_HANDLE 0
36 #define DOS_OUTPUT_HANDLE 1
37 #define DOS_ERROR_HANDLE 2
39 #define DOS_SFT_SIZE 255
40 #define SEGMENT_TO_MCB(seg) ((PDOS_MCB)((ULONG_PTR)BaseAddress + TO_LINEAR((seg), 0)))
41 #define SEGMENT_TO_PSP(seg) ((PDOS_PSP)((ULONG_PTR)BaseAddress + TO_LINEAR((seg), 0)))
42 #define UMB_START_SEGMENT 0xC000
43 #define UMB_END_SEGMENT 0xDFFF
44 #define DOS_ALLOC_HIGH 0x40
45 #define DOS_ALLOC_HIGH_LOW 0x80
46 #define DOS_CMDLINE_LENGTH 127
47 #define DOS_DIR_LENGTH 64
48 #define NUM_DRIVES ('Z' - 'A' + 1)
49 #define DOS_CHAR_ATTRIBUTE 0x07
51 enum DOS_ALLOC_STRATEGY
60 DOS_LOAD_AND_EXECUTE
= 0x00,
62 DOS_LOAD_OVERLAY
= 0x03
67 typedef struct _DOS_MCB
76 typedef struct _DOS_FCB
91 typedef struct _DOS_PSP
96 DWORD TerminateAddress
;
98 DWORD CriticalAddress
;
100 BYTE HandleTable
[20];
103 WORD HandleTableSize
;
104 DWORD HandleTablePtr
;
112 BYTE CommandLineSize
;
113 CHAR CommandLine
[DOS_CMDLINE_LENGTH
];
114 } DOS_PSP
, *PDOS_PSP
;
116 typedef struct _DOS_INPUT_BUFFER
120 CHAR Buffer
[ANYSIZE_ARRAY
];
121 } DOS_INPUT_BUFFER
, *PDOS_INPUT_BUFFER
;
123 typedef struct _DOS_DRIVER_HEADER
130 } DOS_DRIVER_HEADER
, *PDOS_DRIVER_HEADER
;
132 typedef struct _DOS_FIND_FILE_BLOCK
140 /* The following part of the structure is documented */
146 } DOS_FIND_FILE_BLOCK
, *PDOS_FIND_FILE_BLOCK
;
148 typedef struct _DOS_EXEC_PARAM_BLOCK
150 /* Input variables */
156 /* Output variables */
159 } DOS_EXEC_PARAM_BLOCK
, *PDOS_EXEC_PARAM_BLOCK
;
163 extern BOOLEAN DoEcho
;
165 /* FUNCTIONS ******************************************************************/
167 extern CALLBACK16 DosContext
;
168 #define RegisterDosInt32(IntNumber, IntHandler) \
170 DosContext.NextOffset += RegisterInt32(MAKELONG(DosContext.NextOffset, \
171 DosContext.Segment), \
172 (IntNumber), (IntHandler), NULL); \
179 CHAR
DosReadCharacter(WORD FileHandle
);
180 BOOLEAN
DosCheckInput(VOID
);
181 VOID
DosPrintCharacter(WORD FileHandle
, CHAR Character
);
183 BOOLEAN
DosBIOSInitialize(VOID
);
187 * DOS Kernel Functions
190 BOOL
IsConsoleHandle(HANDLE hHandle
);
191 WORD
DosOpenHandle(HANDLE Handle
);
192 HANDLE
DosGetRealHandle(WORD DosHandle
);
194 WORD
DosCreateFile(LPWORD Handle
, LPCSTR FilePath
, WORD CreationFlags
, WORD Attributes
);
195 WORD
DosOpenFile(LPWORD Handle
, LPCSTR FilePath
, BYTE AccessShareModes
);
196 WORD
DosReadFile(WORD FileHandle
, LPVOID Buffer
, WORD Count
, LPWORD BytesRead
);
197 WORD
DosWriteFile(WORD FileHandle
, LPVOID Buffer
, WORD Count
, LPWORD BytesWritten
);
198 WORD
DosSeekFile(WORD FileHandle
, LONG Offset
, BYTE Origin
, LPDWORD NewOffset
);
199 BOOL
DosFlushFileBuffers(WORD FileHandle
);
201 VOID
DosInitializePsp(WORD PspSegment
, LPCSTR CommandLine
, WORD ProgramSize
, WORD Environment
);
202 DWORD
DosLoadExecutable(
203 IN DOS_EXEC_TYPE LoadType
,
204 IN LPCSTR ExecutablePath
,
205 IN LPCSTR CommandLine
,
206 IN PVOID Environment
,
207 OUT PDWORD StackLocation OPTIONAL
,
208 OUT PDWORD EntryPoint OPTIONAL
210 WORD
DosCreateProcess(
211 DOS_EXEC_TYPE LoadType
,
213 PDOS_EXEC_PARAM_BLOCK Parameters
215 DWORD
DosStartProcess(IN LPCSTR ExecutablePath
,
216 IN LPCSTR CommandLine
,
217 IN PVOID Environment
);
218 VOID
DosTerminateProcess(WORD Psp
, BYTE ReturnCode
);
219 BOOLEAN
DosHandleIoctl(BYTE ControlCode
, WORD FileHandle
);
221 VOID WINAPI
DosInt20h(LPWORD Stack
);
222 VOID WINAPI
DosInt21h(LPWORD Stack
);
223 VOID WINAPI
DosBreakInterrupt(LPWORD Stack
);
224 VOID WINAPI
DosInt2Fh(LPWORD Stack
);
226 BOOLEAN
DosKRNLInitialize(VOID
);