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121 lines
2.9 KiB
C
121 lines
2.9 KiB
C
/*
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* COPYRIGHT: GPLv2 - See COPYING in the top level directory
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* PROJECT: ReactOS Virtual DOS Machine
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* FILE: subsystems/mvdm/ntvdm/dos/dos32krnl/process.h
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* PURPOSE: DOS32 Processes
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* PROGRAMMERS: Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
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*/
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#pragma once
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/* DEFINITIONS ****************************************************************/
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#define DOS_CMDLINE_LENGTH 127
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#define DOS_PROGRAM_NAME_TAG 0x0001
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#define SEGMENT_TO_PSP(seg) ((PDOS_PSP)SEG_OFF_TO_PTR((seg), 0))
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typedef enum
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{
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DOS_LOAD_AND_EXECUTE = 0x00,
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DOS_LOAD_ONLY = 0x01,
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DOS_LOAD_OVERLAY = 0x03
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} DOS_EXEC_TYPE;
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#pragma pack(push, 1)
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typedef struct _DOS_PSP
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{
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BYTE Exit[2];
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WORD LastParagraph;
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BYTE Reserved0[6];
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DWORD TerminateAddress;
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DWORD BreakAddress;
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DWORD CriticalAddress;
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WORD ParentPsp;
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BYTE HandleTable[20];
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WORD EnvBlock;
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DWORD LastStack;
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WORD HandleTableSize;
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DWORD HandleTablePtr;
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DWORD PreviousPsp;
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DWORD Reserved1;
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WORD DosVersion;
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BYTE Reserved2[14];
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BYTE FarCall[3];
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BYTE Reserved3[9];
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DOS_FCB Fcb;
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BYTE CommandLineSize;
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CHAR CommandLine[DOS_CMDLINE_LENGTH];
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} DOS_PSP, *PDOS_PSP;
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typedef struct _DOS_EXEC_PARAM_BLOCK
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{
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union
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{
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struct
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{
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/* Input variables */
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WORD Environment;
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DWORD CommandLine;
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DWORD FirstFcb;
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DWORD SecondFcb;
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/* Output variables */
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DWORD StackLocation;
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DWORD EntryPoint;
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};
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struct
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{
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WORD Segment;
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WORD RelocationFactor;
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} Overlay;
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};
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} DOS_EXEC_PARAM_BLOCK, *PDOS_EXEC_PARAM_BLOCK;
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typedef struct _DOS_REGISTER_STATE
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{
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WORD AX, BX, CX, DX, SI, DI, BP, DS, ES;
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// WORD IP, CS, Flags; // They are supposed to be already
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// pushed on stack by the DOS caller.
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} DOS_REGISTER_STATE, *PDOS_REGISTER_STATE;
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#pragma pack(pop)
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/* FUNCTIONS ******************************************************************/
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VOID DosClonePsp(WORD DestSegment, WORD SourceSegment);
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VOID DosCreatePsp(WORD Segment, WORD ProgramSize);
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VOID DosSetProcessContext(WORD Segment);
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DWORD DosLoadExecutableInternal
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(
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IN DOS_EXEC_TYPE LoadType,
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IN LPBYTE ExeBuffer,
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IN DWORD ExeBufferSize,
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IN LPCSTR ExePath,
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IN PDOS_EXEC_PARAM_BLOCK Parameters,
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IN LPCSTR CommandLine OPTIONAL,
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IN LPCSTR Environment OPTIONAL,
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IN DWORD ReturnAddress OPTIONAL
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);
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DWORD DosLoadExecutable
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(
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IN DOS_EXEC_TYPE LoadType,
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IN LPCSTR ExecutablePath,
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IN PDOS_EXEC_PARAM_BLOCK Parameters,
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IN LPCSTR CommandLine OPTIONAL,
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IN LPCSTR Environment OPTIONAL,
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IN DWORD ReturnAddress OPTIONAL
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);
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WORD DosCreateProcess
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(
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LPCSTR ProgramName,
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PDOS_EXEC_PARAM_BLOCK Parameters,
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IN DWORD ReturnAddress OPTIONAL
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);
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VOID DosTerminateProcess(WORD Psp, BYTE ReturnCode, WORD KeepResident);
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