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[aandrejevic] 67651: [NTVDM] Use the SDA for storing the request in DosCallDriver. Rename some more fields we aren't going to use to "Unused..." in the SDA.
by aandrejevic＠svn.reactos.org 11 May '15

11 May '15

Author: aandrejevic Date: Mon May 11 03:36:02 2015 New Revision: 67651 URL: http://svn.reactos.org/svn/reactos?rev=67651&view=rev Log: [NTVDM] Use the SDA for storing the request in DosCallDriver. Rename some more fields we aren't going to use to "Unused..." in the SDA. Modified: trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/device.c trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/device.h trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.h Modified: trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/device.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/dos/… ============================================================================== --- trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/device.c [iso-8859-1] (original) +++ trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/device.c [iso-8859-1] Mon May 11 03:36:02 2015 @@ -47,23 +47,22 @@ static VOID DosCallDriver(DWORD Driver, PDOS_REQUEST_HEADER Request) { PDOS_DRIVER DriverBlock = (PDOS_DRIVER)FAR_POINTER(Driver); - PDOS_REQUEST_HEADER RemoteRequest = FAR_POINTER(REQUEST_LOCATION); WORD ES = getES(); WORD BX = getBX(); /* Set ES:BX to the location of the request */ - setES(HIWORD(REQUEST_LOCATION)); - setBX(LOWORD(REQUEST_LOCATION)); + setES(DOS_DATA_SEGMENT); + setBX(DOS_DATA_OFFSET(Sda.Request)); /* Copy the request structure to ES:BX */ - RtlMoveMemory(RemoteRequest, Request, Request->RequestLength); + RtlMoveMemory(&Sda->Request, Request, Request->RequestLength); /* Call the strategy routine, and then the interrupt routine */ Call16(HIWORD(Driver), DriverBlock->StrategyRoutine); Call16(HIWORD(Driver), DriverBlock->InterruptRoutine); /* Get the request structure from ES:BX */ - RtlMoveMemory(Request, RemoteRequest, Request->RequestLength); + RtlMoveMemory(Request, &Sda->Request, Request->RequestLength); /* Restore ES:BX */ setES(ES); Modified: trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/device.h URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/dos/… ============================================================================== --- trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/device.h [iso-8859-1] (original) +++ trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/device.h [iso-8859-1] Mon May 11 03:36:02 2015 @@ -12,7 +12,6 @@ /* DEFINITIONS ****************************************************************/ #define MAX_DEVICE_NAME 8 -#define REQUEST_LOCATION 0x00700100 // 0070:0100 #define DEVICE_CODE_SIZE 10 #define DEVICE_PRIVATE_AREA(Driver) (Driver + sizeof(DOS_DRIVER) + DEVICE_CODE_SIZE) Modified: trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.h URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/dos/… ============================================================================== --- trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.h [iso-8859-1] (original) +++ trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.h [iso-8859-1] Mon May 11 03:36:02 2015 @@ -178,12 +178,9 @@ BYTE ConsoleSwappedFlag; BYTE Int28CallOk; BYTE Int24AbortFlag; - DOS_RW_REQUEST ReadWriteRequest; + DOS_RW_REQUEST Request; DWORD DriverEntryPoint; - DOS_IOCTL_RW_REQUEST IoctlRequest; - DOS_PEEK_REQUEST StatusRequest; - DWORD DeviceIoBuffer; - DWORD Unused2; + BYTE Unused2[44]; BYTE PspCopyType; BYTE Unused3; BYTE UserNumber[3];

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[aandrejevic] 67650: [FAST486] In HLT, check the CPL and not CS.DPL.
by aandrejevic＠svn.reactos.org 11 May '15

11 May '15

Author: aandrejevic Date: Mon May 11 03:31:04 2015 New Revision: 67650 URL: http://svn.reactos.org/svn/reactos?rev=67650&view=rev Log: [FAST486] In HLT, check the CPL and not CS.DPL. Modified: trunk/reactos/lib/fast486/opcodes.c Modified: trunk/reactos/lib/fast486/opcodes.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/lib/fast486/opcodes.c?rev=… ============================================================================== --- trunk/reactos/lib/fast486/opcodes.c [iso-8859-1] (original) +++ trunk/reactos/lib/fast486/opcodes.c [iso-8859-1] Mon May 11 03:31:04 2015 @@ -853,7 +853,7 @@ } /* Privileged instructions can only be executed under CPL = 0 */ - if (State->SegmentRegs[FAST486_REG_CS].Dpl != 0) + if (Fast486GetCurrentPrivLevel(State) != 0) { Fast486Exception(State, FAST486_EXCEPTION_GP); return;

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[aandrejevic] 67649: [NTVDM] Move various private DOS variables into the Swappable Data Area. It's still mostly unused though.
by aandrejevic＠svn.reactos.org 11 May '15

11 May '15

Author: aandrejevic Date: Mon May 11 02:54:46 2015 New Revision: 67649 URL: http://svn.reactos.org/svn/reactos?rev=67649&view=rev Log: [NTVDM] Move various private DOS variables into the Swappable Data Area. It's still mostly unused though. Modified: trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/bios.c trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/device.c trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.c trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.h trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dosfiles.c trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/handle.c trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/memory.c trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/process.c Modified: trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/bios.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/dos/… ============================================================================== --- trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/bios.c [iso-8859-1] (original) +++ trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/bios.c [iso-8859-1] Mon May 11 02:54:46 2015 @@ -43,16 +43,18 @@ CHAR DosReadCharacter(WORD FileHandle) { - PCHAR Character = (PCHAR)FAR_POINTER(CHARACTER_ADDRESS); WORD BytesRead; - *Character = '\0'; + Sda->ByteBuffer = '\0'; DPRINT("DosReadCharacter\n"); /* Use the file reading function */ - DosReadFile(FileHandle, CHARACTER_ADDRESS, 1, &BytesRead); - - return *Character; + DosReadFile(FileHandle, + MAKELONG(DOS_DATA_OFFSET(Sda.ByteBuffer), DOS_DATA_SEGMENT), + 1, + &BytesRead); + + return Sda->ByteBuffer; } BOOLEAN DosCheckInput(VOID) @@ -62,7 +64,7 @@ if (Descriptor == NULL) { /* Invalid handle */ - DosLastError = ERROR_INVALID_HANDLE; // ERROR_FILE_NOT_FOUND + Sda->LastErrorCode = ERROR_INVALID_HANDLE; // ERROR_FILE_NOT_FOUND return FALSE; } @@ -90,10 +92,14 @@ VOID DosPrintCharacter(WORD FileHandle, CHAR Character) { WORD BytesWritten; - *((PCHAR)FAR_POINTER(CHARACTER_ADDRESS)) = Character; + + Sda->ByteBuffer = Character; /* Use the file writing function */ - DosWriteFile(FileHandle, CHARACTER_ADDRESS, 1, &BytesWritten); + DosWriteFile(FileHandle, + MAKELONG(DOS_DATA_OFFSET(Sda.ByteBuffer), DOS_DATA_SEGMENT), + 1, + &BytesWritten); } BOOLEAN DosBIOSInitialize(VOID) Modified: trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/device.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/dos/… ============================================================================== --- trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/device.c [iso-8859-1] (original) +++ trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/device.c [iso-8859-1] Mon May 11 02:54:46 2015 @@ -587,7 +587,7 @@ Segment = DosAllocateMemory(FileSize >> 4, NULL); if (Segment == 0) { - Result = DosLastError; + Result = Sda->LastErrorCode; goto Cleanup; } Modified: trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/dos/… ============================================================================== --- trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.c [iso-8859-1] (original) +++ trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.c [iso-8859-1] Mon May 11 02:54:46 2015 @@ -34,25 +34,19 @@ /* PRIVATE VARIABLES **********************************************************/ -#define INDOS_POINTER MAKELONG(0x00FE, 0x0070) - CALLBACK16 DosContext; /*static*/ BYTE CurrentDrive = 0x00; static CHAR LastDrive = 'Z'; // The last drive can be redefined with the LASTDRIVE command. At the moment, set the real maximum possible, 'Z'. -static CHAR CurrentDirectories[NUM_DRIVES][DOS_DIR_LENGTH]; -static PBYTE InDos; +static PCHAR CurrentDirectories; /* PUBLIC VARIABLES ***********************************************************/ PDOS_SYSVARS SysVars; +PDOS_SDA Sda; /* Echo state for INT 21h, AH = 01h and AH = 3Fh */ BOOLEAN DoEcho = FALSE; - -DWORD DiskTransferArea; -WORD DosErrorLevel = 0x0000; -WORD DosLastError = 0; /* PRIVATE FUNCTIONS **********************************************************/ @@ -64,7 +58,7 @@ if (Drive > (LastDrive - 'A')) return FALSE; /* Find the path to the new current directory */ - swprintf(DirectoryPath, L"%c\\%S", Drive + 'A', CurrentDirectories[Drive]); + swprintf(DirectoryPath, L"%c\\%S", Drive + 'A', &CurrentDirectories[Drive * DOS_DIR_LENGTH]); /* Change the current directory of the process */ if (!SetCurrentDirectory(DirectoryPath)) return FALSE; @@ -87,7 +81,7 @@ /* Make sure the directory path is not too long */ if (strlen(Directory) >= DOS_DIR_LENGTH) { - DosLastError = ERROR_PATH_NOT_FOUND; + Sda->LastErrorCode = ERROR_PATH_NOT_FOUND; return FALSE; } @@ -100,7 +94,7 @@ /* Make sure the drive exists */ if (DriveNumber > (LastDrive - 'A')) { - DosLastError = ERROR_PATH_NOT_FOUND; + Sda->LastErrorCode = ERROR_PATH_NOT_FOUND; return FALSE; } } @@ -117,7 +111,7 @@ if ((Attributes == INVALID_FILE_ATTRIBUTES) || !(Attributes & FILE_ATTRIBUTE_DIRECTORY)) { - DosLastError = ERROR_PATH_NOT_FOUND; + Sda->LastErrorCode = ERROR_PATH_NOT_FOUND; return FALSE; } @@ -127,7 +121,7 @@ /* Change the directory */ if (!SetCurrentDirectoryA(Directory)) { - DosLastError = LOWORD(GetLastError()); + Sda->LastErrorCode = LOWORD(GetLastError()); return FALSE; } } @@ -157,11 +151,11 @@ /* Set the directory for the drive */ if (Path != NULL) { - strncpy(CurrentDirectories[DriveNumber], Path, DOS_DIR_LENGTH); + strncpy(&CurrentDirectories[DriveNumber * DOS_DIR_LENGTH], Path, DOS_DIR_LENGTH); } else { - CurrentDirectories[DriveNumber][0] = '\0'; + CurrentDirectories[DriveNumber * DOS_DIR_LENGTH] = '\0'; } /* Return success */ @@ -177,7 +171,7 @@ if (getCF()) { - DosTerminateProcess(CurrentPsp, 0, 0); + DosTerminateProcess(Sda->CurrentPsp, 0, 0); return TRUE; } @@ -201,10 +195,10 @@ PDOS_COUNTRY_CODE_BUFFER CountryCodeBuffer; INT Return; - (*InDos)++; + Sda->InDos++; /* Save the value of SS:SP on entry in the PSP */ - SEGMENT_TO_PSP(CurrentPsp)->LastStack = + SEGMENT_TO_PSP(Sda->CurrentPsp)->LastStack = MAKELONG(getSP() + (STACK_FLAGS + 1) * 2, getSS()); /* Check the value in the AH register */ @@ -471,7 +465,7 @@ /* Disk Reset */ case 0x0D: { - PDOS_PSP PspBlock = SEGMENT_TO_PSP(CurrentPsp); + PDOS_PSP PspBlock = SEGMENT_TO_PSP(Sda->CurrentPsp); // TODO: Flush what's needed. DPRINT1("INT 21h, 0Dh is UNIMPLEMENTED\n"); @@ -517,7 +511,7 @@ /* Set Disk Transfer Area */ case 0x1A: { - DiskTransferArea = MAKELONG(getDX(), getDS()); + Sda->DiskTransferArea = MAKELONG(getDX(), getDS()); break; } @@ -697,15 +691,15 @@ /* Get Disk Transfer Area */ case 0x2F: { - setES(HIWORD(DiskTransferArea)); - setBX(LOWORD(DiskTransferArea)); + setES(HIWORD(Sda->DiskTransferArea)); + setBX(LOWORD(Sda->DiskTransferArea)); break; } /* Get DOS Version */ case 0x30: { - PDOS_PSP PspBlock = SEGMENT_TO_PSP(CurrentPsp); + PDOS_PSP PspBlock = SEGMENT_TO_PSP(Sda->CurrentPsp); /* * DOS 2+ - GET DOS VERSION @@ -751,7 +745,7 @@ case 0x31: { DPRINT1("Process going resident: %u paragraphs kept\n", getDX()); - DosTerminateProcess(CurrentPsp, getAL(), getDX()); + DosTerminateProcess(Sda->CurrentPsp, getAL(), getDX()); break; } @@ -792,8 +786,8 @@ /* Get Address of InDOS flag */ case 0x34: { - setES(HIWORD(INDOS_POINTER)); - setBX(LOWORD(INDOS_POINTER)); + setES(DOS_DATA_SEGMENT); + setBX(DOS_DATA_OFFSET(Sda.InDos)); break; } @@ -1002,7 +996,7 @@ else { Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF; - setAX(DosLastError); + setAX(Sda->LastErrorCode); } break; @@ -1228,7 +1222,7 @@ else { Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF; - setAX(DosLastError); + setAX(Sda->LastErrorCode); } break; @@ -1247,7 +1241,7 @@ else { Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF; - setAX(DosLastError); + setAX(Sda->LastErrorCode); } break; @@ -1292,7 +1286,7 @@ * Copy the current directory into the target buffer. * It doesn't contain the drive letter and the backslash. */ - strncpy(String, CurrentDirectories[DriveNumber], DOS_DIR_LENGTH); + strncpy(String, &CurrentDirectories[DriveNumber * DOS_DIR_LENGTH], DOS_DIR_LENGTH); Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF; setAX(0x0100); // Undocumented, see Ralf Brown: http://www.ctyme.com/intr/rb-2933.htm } @@ -1319,7 +1313,7 @@ else { Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF; - setAX(DosLastError); + setAX(Sda->LastErrorCode); setBX(MaxAvailable); } @@ -1354,7 +1348,7 @@ else { Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF; - setAX(DosLastError); + setAX(Sda->LastErrorCode); setBX(Size); } @@ -1417,7 +1411,7 @@ /* Terminate With Return Code */ case 0x4C: { - DosTerminateProcess(CurrentPsp, getAL(), 0); + DosTerminateProcess(Sda->CurrentPsp, getAL(), 0); break; } @@ -1429,15 +1423,15 @@ * DosErrorLevel is cleared after being read by this function. */ Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF; - setAX(DosErrorLevel); - DosErrorLevel = 0x0000; // Clear it + setAX(Sda->ErrorLevel); + Sda->ErrorLevel = 0x0000; // Clear it break; } /* Find First File */ case 0x4E: { - WORD Result = (WORD)demFileFindFirst(FAR_POINTER(DiskTransferArea), + WORD Result = (WORD)demFileFindFirst(FAR_POINTER(Sda->DiskTransferArea), SEG_OFF_TO_PTR(getDS(), getDX()), getCX()); @@ -1454,7 +1448,7 @@ /* Find Next File */ case 0x4F: { - WORD Result = (WORD)demFileFindNext(FAR_POINTER(DiskTransferArea)); + WORD Result = (WORD)demFileFindNext(FAR_POINTER(Sda->DiskTransferArea)); setAX(Result); @@ -1484,7 +1478,7 @@ * and http://www.ctyme.com/intr/rb-3140.htm * for more information. */ - setBX(CurrentPsp); + setBX(Sda->CurrentPsp); break; } @@ -1542,7 +1536,7 @@ { /* Get allocation strategy */ Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF; - setAX(DosAllocStrategy); + setAX(Sda->AllocStrategy); } else if (getAL() == 0x01) { @@ -1565,7 +1559,7 @@ break; } - DosAllocStrategy = getBL(); + Sda->AllocStrategy = getBL(); Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF; } else if (getAL() == 0x02) @@ -1678,7 +1672,7 @@ else { Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF; - setAX(DosLastError); + setAX(Sda->LastErrorCode); } } else if (getAL() == 0x01) @@ -1691,7 +1685,7 @@ else { Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF; - setAX(DosLastError); + setAX(Sda->LastErrorCode); } } else @@ -1740,13 +1734,40 @@ break; } + /* Miscellaneous Internal Functions */ + case 0x5D: + { + switch (getAL()) + { + /* Get Swappable Data Area */ + case 0x06: + { + setDS(DOS_DATA_SEGMENT); + setSI(DOS_DATA_OFFSET(Sda.ErrorMode)); + setCX(sizeof(DOS_SDA)); + setDX(FIELD_OFFSET(DOS_SDA, LastAX)); + + Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF; + break; + } + + default: + { + DPRINT1("INT 21h, AH = 5Dh, subfunction AL = %Xh NOT IMPLEMENTED\n", + getAL()); + } + } + + break; + } + /* Set Handle Count */ case 0x67: { if (!DosResizeHandleTable(getBX())) { Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF; - setAX(DosLastError); + setAX(Sda->LastErrorCode); } else Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF; @@ -1833,7 +1854,7 @@ } } - (*InDos)--; + Sda->InDos--; } VOID WINAPI DosBreakInterrupt(LPWORD Stack) @@ -1942,9 +1963,9 @@ FILE *Stream; WCHAR Buffer[256]; - /* Setup the InDOS flag */ - InDos = (PBYTE)FAR_POINTER(INDOS_POINTER); - *InDos = 0; + /* Get a pointer to the current directory buffer */ + CurrentDirectories = (PCHAR)SEG_OFF_TO_PTR(DOS_DATA_SEGMENT, + DOS_DATA_OFFSET(CurrentDirectories)); /* Clear the current directory buffer */ RtlZeroMemory(CurrentDirectories, sizeof(CurrentDirectories)); @@ -1977,7 +1998,7 @@ /* Set the directory */ if (Path != NULL) { - strncpy(CurrentDirectories[CurrentDrive], Path, DOS_DIR_LENGTH); + strncpy(&CurrentDirectories[CurrentDrive * DOS_DIR_LENGTH], Path, DOS_DIR_LENGTH); } /* Read CONFIG.SYS */ @@ -1995,7 +2016,9 @@ SysVars = (PDOS_SYSVARS)SEG_OFF_TO_PTR(DOS_DATA_SEGMENT, 0); RtlZeroMemory(SysVars, sizeof(DOS_SYSVARS)); SysVars->FirstMcb = FIRST_MCB_SEGMENT; - SysVars->FirstSft = MAKELONG(MASTER_SFT_OFFSET, DOS_DATA_SEGMENT); + SysVars->FirstSft = MAKELONG(DOS_DATA_OFFSET(Sft), DOS_DATA_SEGMENT); + SysVars->CurrentDirs = MAKELONG(DOS_DATA_OFFSET(CurrentDirectories), + DOS_DATA_SEGMENT); /* Initialize the NUL device driver */ SysVars->NullDevice.Link = 0xFFFFFFFF; @@ -2010,6 +2033,16 @@ NullDriverRoutine, sizeof(NullDriverRoutine)); + /* Initialize the swappable data area */ + Sda = (PDOS_SDA)SEG_OFF_TO_PTR(DOS_DATA_SEGMENT, sizeof(DOS_SYSVARS)); + RtlZeroMemory(Sda, sizeof(DOS_SDA)); + + /* Set the current PSP to the system PSP */ + Sda->CurrentPsp = SYSTEM_PSP; + + /* Set the initial allocation strategy to "best fit" */ + Sda->AllocStrategy = DOS_ALLOC_BEST_FIT; + /* Initialize the SFT */ Sft = (PDOS_SFT)FAR_POINTER(SysVars->FirstSft); Sft->Link = 0xFFFFFFFF; Modified: trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.h URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/dos/… ============================================================================== --- trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.h [iso-8859-1] (original) +++ trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.h [iso-8859-1] Mon May 11 02:54:46 2015 @@ -32,7 +32,8 @@ #define SYSTEM_ENV_BLOCK 0x800 #define DOS_CODE_SEGMENT 0x70 #define DOS_DATA_SEGMENT 0xA0 -#define MASTER_SFT_OFFSET 0x100 + +#define DOS_DATA_OFFSET(x) FIELD_OFFSET(DOS_DATA, x) #define INVALID_DOS_HANDLE 0xFFFF #define DOS_INPUT_HANDLE 0 @@ -92,6 +93,15 @@ BYTE NullDriverRoutine[7]; } DOS_SYSVARS, *PDOS_SYSVARS; +typedef struct _DOS_CLOCK_TRANSFER_RECORD +{ + WORD NumberOfDays; + BYTE Minutes; + BYTE Hours; + BYTE Hundredths; + BYTE Seconds; +} DOS_CLOCK_TRANSFER_RECORD, *PDOS_CLOCK_TRANSFER_RECORD; + typedef struct _DOS_INPUT_BUFFER { BYTE MaxLength; @@ -123,15 +133,127 @@ WORD DecimalSep; } DOS_COUNTRY_CODE_BUFFER, *PDOS_COUNTRY_CODE_BUFFER; +typedef struct _DOS_SDA +{ + BYTE PrinterEchoFlag; + CHAR CurrentSwitchChar; + BYTE AllocStrategy; + BYTE Unused0[28]; + + /* This is where the SDA really starts */ + BYTE ErrorMode; + BYTE InDos; + BYTE ErrorDrive; + BYTE LastErrorLocus; + WORD LastErrorCode; + BYTE LastErrorAction; + BYTE LastErrorClass; + DWORD LastErrorPointer; + DWORD DiskTransferArea; + WORD CurrentPsp; + WORD Int23StackPointer; + WORD ErrorLevel; + BYTE CurrentDrive; + BYTE ExtendedBreakFlag; + + /* This part is only valid while in DOS */ + WORD LastAX; + WORD NetworkPsp; + WORD NetworkMachineNumber; + WORD FirstFreeMcb; + WORD BestFreeMcb; + WORD LastFreeMcb; + WORD MemorySize; + WORD LastSearchDirEntry; + BYTE Int24FailFlag; + BYTE DirectoryFlag; + BYTE CtrlBreakFlag; + BYTE AllowFcbBlanks; + BYTE Unused1; + BYTE DayOfMonth; + BYTE Month; + WORD Year; + WORD NumDays; + BYTE DayOfWeek; + BYTE ConsoleSwappedFlag; + BYTE Int28CallOk; + BYTE Int24AbortFlag; + DOS_RW_REQUEST ReadWriteRequest; + DWORD DriverEntryPoint; + DOS_IOCTL_RW_REQUEST IoctlRequest; + DOS_PEEK_REQUEST StatusRequest; + DWORD DeviceIoBuffer; + DWORD Unused2; + BYTE PspCopyType; + BYTE Unused3; + BYTE UserNumber[3]; + BYTE OemNumber; + WORD ErrorCodeTable; + DOS_CLOCK_TRANSFER_RECORD ClockTransferRecord; + BYTE ByteBuffer; + BYTE Unused4; + CHAR FileNameBuffer[256]; + BYTE Unused5[53]; + CHAR CurrentDirectory[81]; + CHAR FcbFilename[12]; + CHAR FcbRenameDest[12]; + BYTE Unused6[8]; + BYTE ExtendedAttribute; + BYTE FcbType; + BYTE DirSearchAttributes; + BYTE FileOpenMode; + BYTE FileFound; + BYTE DeviceNameFound; + BYTE SpliceFlag; + BYTE DosCallFlag; + BYTE Unused7[5]; + BYTE InsertMode; + BYTE ParsedFcbExists; + BYTE VolumeIDFlag; + BYTE TerminationType; + BYTE CreateFileFlag; + BYTE FileDeletedChar; + DWORD CriticalErrorDpb; + DWORD UserRegistersStack; + WORD Int24StackPointer; + BYTE Unused8[14]; + DWORD DeviceHeader; + DWORD CurrentSft; + DWORD CurrentDirPointer; + DWORD CallerFcb; + WORD SftNumber; + WORD TempFileHandle; + DWORD JftEntry; + WORD FirstArgument; + WORD SecondArgument; + WORD LastComponent; + WORD TransferOffset; + BYTE Unused9[38]; + DWORD WorkingSft; + WORD Int21CallerBX; + WORD Int21CallerDS; + WORD Unused10; + DWORD PrevCallFrame; +} DOS_SDA, *PDOS_SDA; + +/* This structure is only used for DOS_DATA_OFFSET calculations */ +typedef struct _DOS_DATA +{ + DOS_SYSVARS SysVars; + DOS_SDA Sda; + CHAR CurrentDirectories[NUM_DRIVES * DOS_DIR_LENGTH]; + BYTE Sft[ANYSIZE_ARRAY]; +} DOS_DATA, *PDOS_DATA; + #pragma pack(pop) /* VARIABLES ******************************************************************/ extern BOOLEAN DoEcho; -extern DWORD DiskTransferArea; extern WORD DosErrorLevel; extern WORD DosLastError; extern PDOS_SYSVARS SysVars; +extern PDOS_SDA Sda; /* FUNCTIONS ******************************************************************/ Modified: trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dosfiles.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/dos/… ============================================================================== --- trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dosfiles.c [iso-8859-1] (original) +++ trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dosfiles.c [iso-8859-1] Mon May 11 02:54:46 2015 @@ -376,7 +376,7 @@ Descriptor->OpenMode = AccessShareModes; Descriptor->Attributes = LOBYTE(GetFileAttributesA(FilePath)); Descriptor->Size = GetFileSize(FileHandle, NULL); - Descriptor->OwnerPsp = CurrentPsp; + Descriptor->OwnerPsp = Sda->CurrentPsp; Descriptor->Win32Handle = FileHandle; } @@ -451,7 +451,7 @@ { Descriptor->Attributes = LOBYTE(GetFileAttributesA(FilePath)); Descriptor->Size = GetFileSize(FileHandle, NULL); - Descriptor->OwnerPsp = CurrentPsp; + Descriptor->OwnerPsp = Sda->CurrentPsp; Descriptor->Win32Handle = FileHandle; } @@ -600,7 +600,7 @@ Descriptor->OpenMode = AccessShareModes; Descriptor->Attributes = LOBYTE(GetFileAttributesA(FilePath)); Descriptor->Size = GetFileSize(FileHandle, NULL); - Descriptor->OwnerPsp = CurrentPsp; + Descriptor->OwnerPsp = Sda->CurrentPsp; Descriptor->Win32Handle = FileHandle; } @@ -793,7 +793,7 @@ if (Descriptor == NULL) { /* Invalid handle */ - DosLastError = ERROR_INVALID_HANDLE; + Sda->LastErrorCode = ERROR_INVALID_HANDLE; return FALSE; } @@ -819,7 +819,7 @@ if (Descriptor == NULL) { /* Invalid handle */ - DosLastError = ERROR_INVALID_HANDLE; + Sda->LastErrorCode = ERROR_INVALID_HANDLE; return FALSE; } @@ -828,7 +828,7 @@ if (!LockFile(Descriptor->Win32Handle, Offset, 0, Size, 0)) { - DosLastError = GetLastError(); + Sda->LastErrorCode = GetLastError(); return FALSE; } @@ -842,7 +842,7 @@ if (Descriptor == NULL) { /* Invalid handle */ - DosLastError = ERROR_INVALID_HANDLE; + Sda->LastErrorCode = ERROR_INVALID_HANDLE; return FALSE; } @@ -851,7 +851,7 @@ if (!UnlockFile(Descriptor->Win32Handle, Offset, 0, Size, 0)) { - DosLastError = GetLastError(); + Sda->LastErrorCode = GetLastError(); return FALSE; } @@ -865,7 +865,7 @@ if (!Descriptor) { - DosLastError = ERROR_INVALID_HANDLE; + Sda->LastErrorCode = ERROR_INVALID_HANDLE; return FALSE; } @@ -901,7 +901,7 @@ { if (Node == NULL || !(Node->DeviceAttributes & DOS_DEVATTR_IOCTL)) { - DosLastError = ERROR_INVALID_FUNCTION; + Sda->LastErrorCode = ERROR_INVALID_FUNCTION; return FALSE; } @@ -921,7 +921,7 @@ { if (Node == NULL || !(Node->DeviceAttributes & DOS_DEVATTR_IOCTL)) { - DosLastError = ERROR_INVALID_FUNCTION; + Sda->LastErrorCode = ERROR_INVALID_FUNCTION; return FALSE; } @@ -941,7 +941,7 @@ { DPRINT1("Unsupported IOCTL: 0x%02X\n", ControlCode); - DosLastError = ERROR_INVALID_PARAMETER; + Sda->LastErrorCode = ERROR_INVALID_PARAMETER; return FALSE; } } Modified: trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/handle.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/dos/… ============================================================================== --- trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/handle.c [iso-8859-1] (original) +++ trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/handle.c [iso-8859-1] Mon May 11 02:54:46 2015 @@ -59,7 +59,7 @@ for (i = 0; i < DEFAULT_JFT_SIZE; i++) DestinationTable[i] = 0xFF; /* Check if this is the initial process */ - if (CurrentPsp == SYSTEM_PSP) + if (Sda->CurrentPsp == SYSTEM_PSP) { BYTE DescriptorId; HANDLE StandardHandles[3]; @@ -122,7 +122,7 @@ else { /* Get the parent PSP block and handle table */ - PspBlock = SEGMENT_TO_PSP(CurrentPsp); + PspBlock = SEGMENT_TO_PSP(Sda->CurrentPsp); SourceTable = (LPBYTE)FAR_POINTER(PspBlock->HandleTablePtr); /* Copy the first 20 handles into the new table */ @@ -144,7 +144,7 @@ WORD Segment; /* Get the PSP block */ - PspBlock = SEGMENT_TO_PSP(CurrentPsp); + PspBlock = SEGMENT_TO_PSP(Sda->CurrentPsp); if (NewSize == PspBlock->HandleTableSize) { @@ -170,7 +170,7 @@ /* Update the handle table pointer and size */ PspBlock->HandleTableSize = NewSize; - PspBlock->HandleTablePtr = MAKELONG(0x18, CurrentPsp); + PspBlock->HandleTablePtr = MAKELONG(0x18, Sda->CurrentPsp); } else { @@ -232,10 +232,10 @@ if (Descriptor == NULL) return INVALID_DOS_HANDLE; /* The system PSP has no handle table */ - if (CurrentPsp == SYSTEM_PSP) return INVALID_DOS_HANDLE; + if (Sda->CurrentPsp == SYSTEM_PSP) return INVALID_DOS_HANDLE; /* Get a pointer to the handle table */ - PspBlock = SEGMENT_TO_PSP(CurrentPsp); + PspBlock = SEGMENT_TO_PSP(Sda->CurrentPsp); HandleTable = (LPBYTE)FAR_POINTER(PspBlock->HandleTablePtr); /* Find a free entry in the JFT */ @@ -265,10 +265,10 @@ DPRINT("DosQueryHandle: DosHandle 0x%04X\n", DosHandle); /* The system PSP has no handle table */ - if (CurrentPsp == SYSTEM_PSP) return 0xFF; + if (Sda->CurrentPsp == SYSTEM_PSP) return 0xFF; /* Get a pointer to the handle table */ - PspBlock = SEGMENT_TO_PSP(CurrentPsp); + PspBlock = SEGMENT_TO_PSP(Sda->CurrentPsp); HandleTable = (LPBYTE)FAR_POINTER(PspBlock->HandleTablePtr); /* Return the descriptor ID */ @@ -281,7 +281,7 @@ if (DescriptorId == 0xFF) { - DosLastError = ERROR_INVALID_HANDLE; + Sda->LastErrorCode = ERROR_INVALID_HANDLE; return INVALID_DOS_HANDLE; } @@ -300,10 +300,10 @@ NewHandle); /* The system PSP has no handle table */ - if (CurrentPsp == SYSTEM_PSP) return FALSE; + if (Sda->CurrentPsp == SYSTEM_PSP) return FALSE; /* Get a pointer to the handle table */ - PspBlock = SEGMENT_TO_PSP(CurrentPsp); + PspBlock = SEGMENT_TO_PSP(Sda->CurrentPsp); HandleTable = (LPBYTE)FAR_POINTER(PspBlock->HandleTablePtr); /* Make sure the old handle is open */ @@ -339,10 +339,10 @@ DPRINT("DosCloseHandle: DosHandle 0x%04X\n", DosHandle); /* The system PSP has no handle table */ - if (CurrentPsp == SYSTEM_PSP) return FALSE; + if (Sda->CurrentPsp == SYSTEM_PSP) return FALSE; /* Get a pointer to the handle table */ - PspBlock = SEGMENT_TO_PSP(CurrentPsp); + PspBlock = SEGMENT_TO_PSP(Sda->CurrentPsp); HandleTable = (LPBYTE)FAR_POINTER(PspBlock->HandleTablePtr); /* Make sure the handle is open */ Modified: trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/memory.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/dos/… ============================================================================== --- trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/memory.c [iso-8859-1] (original) +++ trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/memory.c [iso-8859-1] Mon May 11 02:54:46 2015 @@ -20,7 +20,6 @@ /* PUBLIC VARIABLES ***********************************************************/ -BYTE DosAllocStrategy = DOS_ALLOC_BEST_FIT; BOOLEAN DosUmbLinked = FALSE; /* PRIVATE FUNCTIONS **********************************************************/ @@ -63,7 +62,7 @@ DPRINT("DosAllocateMemory: Size 0x%04X\n", Size); - if (DosUmbLinked && (DosAllocStrategy & (DOS_ALLOC_HIGH | DOS_ALLOC_HIGH_LOW))) + if (DosUmbLinked && (Sda->AllocStrategy & (DOS_ALLOC_HIGH | DOS_ALLOC_HIGH_LOW))) { /* Search UMB first */ Segment = UMB_START_SEGMENT; @@ -79,7 +78,7 @@ if (CurrentMcb->BlockType != 'M' && CurrentMcb->BlockType != 'Z') { DPRINT("The DOS memory arena is corrupted!\n"); - DosLastError = ERROR_ARENA_TRASHED; + Sda->LastErrorCode = ERROR_ARENA_TRASHED; return 0; } @@ -95,7 +94,7 @@ /* Check if this block is big enough */ if (CurrentMcb->Size < Size) goto Next; - switch (DosAllocStrategy & 0x3F) + switch (Sda->AllocStrategy & 0x3F) { case DOS_ALLOC_FIRST_FIT: { @@ -128,7 +127,7 @@ if (CurrentMcb->BlockType == 'Z') { /* Check if nothing was found while searching through UMBs */ - if ((Result == 0) && SearchUmb && (DosAllocStrategy & DOS_ALLOC_HIGH_LOW)) + if ((Result == 0) && SearchUmb && (Sda->AllocStrategy & DOS_ALLOC_HIGH_LOW)) { /* Search low memory */ Segment = FIRST_MCB_SEGMENT; @@ -148,7 +147,7 @@ /* If we didn't find a free block, return 0 */ if (Result == 0) { - DosLastError = ERROR_NOT_ENOUGH_MEMORY; + Sda->LastErrorCode = ERROR_NOT_ENOUGH_MEMORY; if (MaxAvailable) *MaxAvailable = MaxSize; return 0; } @@ -160,7 +159,7 @@ if (CurrentMcb->Size > Size) { /* It is, split it into two blocks */ - if ((DosAllocStrategy & 0x3F) != DOS_ALLOC_LAST_FIT) + if ((Sda->AllocStrategy & 0x3F) != DOS_ALLOC_LAST_FIT) { PDOS_MCB NextMcb = SEGMENT_TO_MCB(Result + Size + 1); @@ -194,7 +193,7 @@ } /* Take ownership of the block */ - CurrentMcb->OwnerPsp = CurrentPsp; + CurrentMcb->OwnerPsp = Sda->CurrentPsp; /* Return the segment of the data portion of the block */ return Result + 1; @@ -216,7 +215,7 @@ || Mcb->OwnerPsp == 0) { Success = FALSE; - DosLastError = ERROR_INVALID_HANDLE; + Sda->LastErrorCode = ERROR_INVALID_HANDLE; goto Done; } @@ -240,7 +239,7 @@ if (NextMcb->OwnerPsp != 0) { DPRINT("Cannot expand memory block: next segment is not free!\n"); - DosLastError = ERROR_NOT_ENOUGH_MEMORY; + Sda->LastErrorCode = ERROR_NOT_ENOUGH_MEMORY; Success = FALSE; goto Done; } @@ -254,7 +253,7 @@ if (ReturnSize < NewSize) { DPRINT("Cannot expand memory block: insufficient free segments available!\n"); - DosLastError = ERROR_NOT_ENOUGH_MEMORY; + Sda->LastErrorCode = ERROR_NOT_ENOUGH_MEMORY; Success = FALSE; goto Done; } Modified: trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/process.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/dos/… ============================================================================== --- trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/process.c [iso-8859-1] (original) +++ trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/process.c [iso-8859-1] Mon May 11 02:54:46 2015 @@ -26,10 +26,6 @@ #include "io.h" #include "hardware/ps2.h" - -/* PUBLIC VARIABLES ***********************************************************/ - -WORD CurrentPsp = SYSTEM_PSP; /* PRIVATE FUNCTIONS **********************************************************/ @@ -212,7 +208,7 @@ PspBlock->CriticalAddress = IntVecTable[0x24]; /* Set the parent PSP */ - PspBlock->ParentPsp = CurrentPsp; + PspBlock->ParentPsp = Sda->CurrentPsp; /* No environment block yet */ PspBlock->EnvBlock = 0; @@ -235,8 +231,8 @@ VOID DosSetProcessContext(WORD Segment) { - CurrentPsp = Segment; - DiskTransferArea = MAKELONG(0x80, Segment); + Sda->CurrentPsp = Segment; + Sda->DiskTransferArea = MAKELONG(0x80, Segment); } DWORD DosLoadExecutable(IN DOS_EXEC_TYPE LoadType, @@ -439,7 +435,7 @@ /* Check if there's at least enough memory for the minimum size */ if (MaxAllocSize < (BaseSize + (sizeof(DOS_PSP) >> 4) + Header->e_minalloc)) { - Result = DosLastError; + Result = Sda->LastErrorCode; goto Cleanup; } @@ -496,13 +492,13 @@ if (LoadType == DOS_LOAD_AND_EXECUTE) { /* Save the program state */ - if (CurrentPsp != SYSTEM_PSP) + if (Sda->CurrentPsp != SYSTEM_PSP) { /* Push the task state */ DosSaveState(); /* Update the last stack in the PSP */ - SEGMENT_TO_PSP(CurrentPsp)->LastStack = MAKELONG(getSP(), getSS()); + SEGMENT_TO_PSP(Sda->CurrentPsp)->LastStack = MAKELONG(getSP(), getSS()); } /* Set the initial segment registers */ @@ -544,7 +540,7 @@ Segment = DosAllocateMemory(MaxAllocSize, NULL); if (Segment == 0) { - Result = DosLastError; + Result = Sda->LastErrorCode; goto Cleanup; } @@ -577,13 +573,13 @@ if (LoadType == DOS_LOAD_AND_EXECUTE) { /* Save the program state */ - if (CurrentPsp != SYSTEM_PSP) + if (Sda->CurrentPsp != SYSTEM_PSP) { /* Push the task state */ DosSaveState(); /* Update the last stack in the PSP */ - SEGMENT_TO_PSP(CurrentPsp)->LastStack = MAKELONG(getSP(), getSS()); + SEGMENT_TO_PSP(Sda->CurrentPsp)->LastStack = MAKELONG(getSP(), getSS()); } /* Set the initial segment registers */ @@ -906,10 +902,10 @@ IntVecTable[0x24] = PspBlock->CriticalAddress; /* Update the current PSP */ - if (Psp == CurrentPsp) - { - CurrentPsp = PspBlock->ParentPsp; - if (CurrentPsp == SYSTEM_PSP) + if (Psp == Sda->CurrentPsp) + { + Sda->CurrentPsp = PspBlock->ParentPsp; + if (Sda->CurrentPsp == SYSTEM_PSP) { ResetEvent(VdmTaskEvent); CpuUnsimulate(); @@ -935,11 +931,11 @@ #endif /* Save the return code - Normal termination */ - DosErrorLevel = MAKEWORD(ReturnCode, 0x00); + Sda->ErrorLevel = MAKEWORD(ReturnCode, 0x00); /* Restore the old stack */ - setSS(HIWORD(SEGMENT_TO_PSP(CurrentPsp)->LastStack)); - setSP(LOWORD(SEGMENT_TO_PSP(CurrentPsp)->LastStack)); + setSS(HIWORD(SEGMENT_TO_PSP(Sda->CurrentPsp)->LastStack)); + setSP(LOWORD(SEGMENT_TO_PSP(Sda->CurrentPsp)->LastStack)); /* Are we returning to DOS code? */ if (HIWORD(PspBlock->TerminateAddress) == DOS_CODE_SEGMENT)

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[aandrejevic] 67648: [FAST486] Don't perform privilege checks while reading the IDT, GDT or TSS.
by aandrejevic＠svn.reactos.org 11 May '15

11 May '15

Author: aandrejevic Date: Mon May 11 02:49:25 2015 New Revision: 67648 URL: http://svn.reactos.org/svn/reactos?rev=67648&view=rev Log: [FAST486] Don't perform privilege checks while reading the IDT, GDT or TSS. Modified: trunk/reactos/lib/fast486/common.c trunk/reactos/lib/fast486/common.inl trunk/reactos/lib/fast486/opgroups.c Modified: trunk/reactos/lib/fast486/common.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/lib/fast486/common.c?rev=6… ============================================================================== --- trunk/reactos/lib/fast486/common.c [iso-8859-1] (original) +++ trunk/reactos/lib/fast486/common.c [iso-8859-1] Mon May 11 02:49:25 2015 @@ -123,7 +123,7 @@ { /* We can't prefetch without possibly violating page permissions */ State->PrefetchValid = FALSE; - return Fast486ReadLinearMemory(State, LinearAddress, Buffer, Size); + return Fast486ReadLinearMemory(State, LinearAddress, Buffer, Size, TRUE); } } @@ -131,7 +131,8 @@ if (Fast486ReadLinearMemory(State, State->PrefetchAddress, State->PrefetchCache, - FAST486_CACHE_SIZE)) + FAST486_CACHE_SIZE, + TRUE)) { State->PrefetchValid = TRUE; @@ -150,7 +151,7 @@ #endif { /* Read from the linear address */ - return Fast486ReadLinearMemory(State, LinearAddress, Buffer, Size); + return Fast486ReadLinearMemory(State, LinearAddress, Buffer, Size, TRUE); } } @@ -236,7 +237,7 @@ #endif /* Write to the linear address */ - return Fast486WriteLinearMemory(State, LinearAddress, Buffer, Size); + return Fast486WriteLinearMemory(State, LinearAddress, Buffer, Size, TRUE); } static inline BOOLEAN @@ -253,7 +254,8 @@ State->Idtr.Address + Number * sizeof(*IdtEntry), IdtEntry, - sizeof(*IdtEntry))) + sizeof(*IdtEntry), + FALSE)) { /* Exception occurred */ return FALSE; @@ -325,7 +327,8 @@ State->TaskReg.Base, &Tss, State->TaskReg.Limit >= sizeof(FAST486_TSS) - ? sizeof(FAST486_TSS) : sizeof(FAST486_LEGACY_TSS))) + ? sizeof(FAST486_TSS) : sizeof(FAST486_LEGACY_TSS), + FALSE)) { /* Exception occurred */ return FALSE; @@ -622,7 +625,8 @@ State->TaskReg.Base, &OldTss, State->TaskReg.Limit >= sizeof(FAST486_TSS) - ? sizeof(FAST486_TSS) : sizeof(FAST486_LEGACY_TSS))) + ? sizeof(FAST486_TSS) : sizeof(FAST486_LEGACY_TSS), + FALSE)) { /* Exception occurred */ return FALSE; @@ -649,7 +653,8 @@ if (!Fast486ReadLinearMemory(State, State->Gdtr.Address + GET_SEGMENT_INDEX(Selector), &NewTssDescriptor, - sizeof(NewTssDescriptor))) + sizeof(NewTssDescriptor), + FALSE)) { /* Exception occurred */ return FALSE; @@ -703,7 +708,8 @@ NewTssAddress, &NewTss, NewTssLimit >= sizeof(FAST486_TSS) - ? sizeof(FAST486_TSS) : sizeof(FAST486_LEGACY_TSS))) + ? sizeof(FAST486_TSS) : sizeof(FAST486_LEGACY_TSS), + FALSE)) { /* Exception occurred */ return FALSE; @@ -718,7 +724,8 @@ State->Gdtr.Address + GET_SEGMENT_INDEX(State->TaskReg.Selector), &OldTssDescriptor, - sizeof(OldTssDescriptor))) + sizeof(OldTssDescriptor), + FALSE)) { /* Exception occurred */ return FALSE; @@ -730,7 +737,8 @@ State->Gdtr.Address + GET_SEGMENT_INDEX(State->TaskReg.Selector), &OldTssDescriptor, - sizeof(OldTssDescriptor))) + sizeof(OldTssDescriptor), + FALSE)) { /* Exception occurred */ return FALSE; @@ -789,7 +797,8 @@ State->TaskReg.Base, &OldTss, State->TaskReg.Limit >= sizeof(FAST486_TSS) - ? sizeof(FAST486_TSS) : sizeof(FAST486_LEGACY_TSS))) + ? sizeof(FAST486_TSS) : sizeof(FAST486_LEGACY_TSS), + FALSE)) { /* Exception occurred */ return FALSE; @@ -802,7 +811,8 @@ if (!Fast486WriteLinearMemory(State, State->Gdtr.Address + GET_SEGMENT_INDEX(Selector), &NewTssDescriptor, - sizeof(NewTssDescriptor))) + sizeof(NewTssDescriptor), + FALSE)) { /* Exception occurred */ return FALSE; @@ -1041,7 +1051,8 @@ State->TaskReg.Base, &Tss, State->TaskReg.Limit >= sizeof(FAST486_TSS) - ? sizeof(FAST486_TSS) : sizeof(FAST486_LEGACY_TSS))) + ? sizeof(FAST486_TSS) : sizeof(FAST486_LEGACY_TSS), + FALSE)) { /* Exception occurred */ return FALSE; Modified: trunk/reactos/lib/fast486/common.inl URL: http://svn.reactos.org/svn/reactos/trunk/reactos/lib/fast486/common.inl?rev… ============================================================================== --- trunk/reactos/lib/fast486/common.inl [iso-8859-1] (original) +++ trunk/reactos/lib/fast486/common.inl [iso-8859-1] Mon May 11 02:49:25 2015 @@ -150,7 +150,8 @@ Fast486ReadLinearMemory(PFAST486_STATE State, ULONG LinearAddress, PVOID Buffer, - ULONG Size) + ULONG Size, + BOOLEAN CheckPrivilege) { /* Check if paging is enabled */ if (State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PG) @@ -177,7 +178,7 @@ PageLength -= PageOffset; } - if (!TableEntry.Present || (!TableEntry.Usermode && (Cpl > 0))) + if (CheckPrivilege && (!TableEntry.Present || (!TableEntry.Usermode && (Cpl > 0)))) { State->ControlRegisters[FAST486_REG_CR2] = Page + PageOffset; @@ -219,7 +220,8 @@ Fast486WriteLinearMemory(PFAST486_STATE State, ULONG LinearAddress, PVOID Buffer, - ULONG Size) + ULONG Size, + BOOLEAN CheckPrivilege) { /* Check if paging is enabled */ if (State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PG) @@ -246,9 +248,10 @@ PageLength -= PageOffset; } - if ((!TableEntry.Present || (!TableEntry.Usermode && (Cpl > 0))) + if (CheckPrivilege + && ((!TableEntry.Present || (!TableEntry.Usermode && (Cpl > 0))) || ((State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_WP) - && !TableEntry.Writeable)) + && !TableEntry.Writeable))) { State->ControlRegisters[FAST486_REG_CR2] = Page + PageOffset; @@ -503,7 +506,8 @@ State->Gdtr.Address + GET_SEGMENT_INDEX(Selector), Entry, - sizeof(*Entry))) + sizeof(*Entry), + FALSE)) { /* Exception occurred */ *EntryValid = FALSE; @@ -524,7 +528,8 @@ State->Ldtr.Base + GET_SEGMENT_INDEX(Selector), Entry, - sizeof(*Entry))) + sizeof(*Entry), + FALSE)) { /* Exception occurred */ *EntryValid = FALSE; Modified: trunk/reactos/lib/fast486/opgroups.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/lib/fast486/opgroups.c?rev… ============================================================================== --- trunk/reactos/lib/fast486/opgroups.c [iso-8859-1] (original) +++ trunk/reactos/lib/fast486/opgroups.c [iso-8859-1] Mon May 11 02:49:25 2015 @@ -1979,7 +1979,8 @@ Fast486WriteLinearMemory(State, State->Gdtr.Address + GET_SEGMENT_INDEX(Selector), &GdtEntry, - sizeof(GdtEntry)); + sizeof(GdtEntry), + FALSE /* We already made sure CPL is 0 */); } break;

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[aandrejevic] 67647: [FAST486] The LMSW instruction doesn't #GP when the program tries to return to real mode. Rather, it just doesn't happen (the PE bit remains 1).
by aandrejevic＠svn.reactos.org 10 May '15

10 May '15

Author: aandrejevic Date: Sun May 10 23:50:33 2015 New Revision: 67647 URL: http://svn.reactos.org/svn/reactos?rev=67647&view=rev Log: [FAST486] The LMSW instruction doesn't #GP when the program tries to return to real mode. Rather, it just doesn't happen (the PE bit remains 1). Modified: trunk/reactos/lib/fast486/opgroups.c Modified: trunk/reactos/lib/fast486/opgroups.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/lib/fast486/opgroups.c?rev… ============================================================================== --- trunk/reactos/lib/fast486/opgroups.c [iso-8859-1] (original) +++ trunk/reactos/lib/fast486/opgroups.c [iso-8859-1] Sun May 10 23:50:33 2015 @@ -2239,11 +2239,14 @@ { USHORT MachineStatusWord; - /* This is a privileged instruction */ - if (Fast486GetCurrentPrivLevel(State) != 0) - { - Fast486Exception(State, FAST486_EXCEPTION_GP); - return; + if (State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PE) + { + /* This is a privileged instruction */ + if (Fast486GetCurrentPrivLevel(State) != 0) + { + Fast486Exception(State, FAST486_EXCEPTION_GP); + return; + } } /* Read the new Machine Status Word */ @@ -2253,16 +2256,8 @@ return; } - /* This instruction cannot be used to return to real mode */ - if ((State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PE) - && !(MachineStatusWord & FAST486_CR0_PE)) - { - Fast486Exception(State, FAST486_EXCEPTION_GP); - return; - } - - /* Set the lowest 4 bits */ - State->ControlRegisters[FAST486_REG_CR0] &= 0xFFFFFFF0; + /* Set the lowest 4 bits, but never clear bit 0 */ + State->ControlRegisters[FAST486_REG_CR0] &= 0xFFFFFFF1; State->ControlRegisters[FAST486_REG_CR0] |= MachineStatusWord & 0x0F; break;

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[aandrejevic] 67646: [FAST486] Don't check for gates in virtual 8086 mode.
by aandrejevic＠svn.reactos.org 10 May '15

10 May '15

Author: aandrejevic Date: Sun May 10 22:54:15 2015 New Revision: 67646 URL: http://svn.reactos.org/svn/reactos?rev=67646&view=rev Log: [FAST486] Don't check for gates in virtual 8086 mode. Modified: trunk/reactos/lib/fast486/opcodes.c trunk/reactos/lib/fast486/opgroups.c Modified: trunk/reactos/lib/fast486/opcodes.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/lib/fast486/opcodes.c?rev=… ============================================================================== --- trunk/reactos/lib/fast486/opcodes.c [iso-8859-1] (original) +++ trunk/reactos/lib/fast486/opcodes.c [iso-8859-1] Sun May 10 22:54:15 2015 @@ -4073,7 +4073,7 @@ return; } - if (State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PE) + if ((State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PE) && !State->Flags.Vm) { if (!Fast486ProcessGate(State, Segment, Offset, TRUE)) { @@ -5126,7 +5126,7 @@ return; } - if (State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PE) + if ((State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PE) && !State->Flags.Vm) { if (!Fast486ProcessGate(State, Segment, Offset, FALSE)) { Modified: trunk/reactos/lib/fast486/opgroups.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/lib/fast486/opgroups.c?rev… ============================================================================== --- trunk/reactos/lib/fast486/opgroups.c [iso-8859-1] (original) +++ trunk/reactos/lib/fast486/opgroups.c [iso-8859-1] Sun May 10 22:54:15 2015 @@ -1467,7 +1467,8 @@ return; } - if (State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PE) + if ((State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PE) + && !State->Flags.Vm) { if (!Fast486ProcessGate(State, Selector, Value, TRUE)) { @@ -1529,7 +1530,8 @@ return; } - if (State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PE) + if ((State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PE) + && !State->Flags.Vm) { if (!Fast486ProcessGate(State, Selector, Value, FALSE)) { @@ -1629,7 +1631,8 @@ return; } - if (State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PE) + if ((State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PE) + && !State->Flags.Vm) { if (!Fast486ProcessGate(State, Selector, Value, TRUE)) { @@ -1697,7 +1700,8 @@ return; } - if (State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PE) + if ((State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PE) + && !State->Flags.Vm) { if (!Fast486ProcessGate(State, Selector, Value, FALSE)) {

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[aandrejevic] 67645: [FAST486] - Fix VM86-related stuff. - Optimize MOV.
by aandrejevic＠svn.reactos.org 10 May '15

10 May '15

Author: aandrejevic Date: Sun May 10 21:59:07 2015 New Revision: 67645 URL: http://svn.reactos.org/svn/reactos?rev=67645&view=rev Log: [FAST486] - Fix VM86-related stuff. - Optimize MOV. Modified: trunk/reactos/lib/fast486/common.c trunk/reactos/lib/fast486/common.inl trunk/reactos/lib/fast486/opcodes.c Modified: trunk/reactos/lib/fast486/common.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/lib/fast486/common.c?rev=6… ============================================================================== --- trunk/reactos/lib/fast486/common.c [iso-8859-1] (original) +++ trunk/reactos/lib/fast486/common.c [iso-8859-1] Sun May 10 21:59:07 2015 @@ -67,7 +67,7 @@ } /* Check for protected mode */ - if (State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PE) + if ((State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PE) && !State->Flags.Vm) { /* Privilege checks */ @@ -189,7 +189,7 @@ } /* Check for protected mode */ - if (State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PE) + if ((State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PE) && !State->Flags.Vm) { /* Privilege checks */ @@ -304,6 +304,7 @@ { USHORT OldSs = State->SegmentRegs[FAST486_REG_SS].Selector; ULONG OldEsp = State->GeneralRegs[FAST486_REG_ESP].Long; + BOOLEAN OldVm = State->Flags.Vm; if (IdtEntry->Type == FAST486_TASK_GATE_SIGNATURE) { @@ -398,6 +399,12 @@ } State->GeneralRegs[FAST486_REG_ESP].Long = NewEsp; + + if (State->Flags.Vm) + { + /* Clear the VM flag */ + State->Flags.Vm = FALSE; + } } /* Load new CS */ @@ -418,27 +425,44 @@ State->InstPtr.LowWord = IdtEntry->Offset; } + if (OldVm) + { + /* Push GS, FS, DS and ES */ + if (!Fast486StackPushInternal(State, + GateSize, + State->SegmentRegs[FAST486_REG_GS].Selector)) + { + return FALSE; + } + if (!Fast486StackPushInternal(State, + GateSize, + State->SegmentRegs[FAST486_REG_FS].Selector)) + { + return FALSE; + } + if (!Fast486StackPushInternal(State, + GateSize, + State->SegmentRegs[FAST486_REG_DS].Selector)) + { + return FALSE; + } + if (!Fast486StackPushInternal(State, + GateSize, + State->SegmentRegs[FAST486_REG_ES].Selector)) + { + return FALSE; + } + + /* Now load them with NULL selectors, since they are useless in protected mode */ + if (!Fast486LoadSegment(State, FAST486_REG_GS, 0)) return FALSE; + if (!Fast486LoadSegment(State, FAST486_REG_FS, 0)) return FALSE; + if (!Fast486LoadSegment(State, FAST486_REG_DS, 0)) return FALSE; + if (!Fast486LoadSegment(State, FAST486_REG_ES, 0)) return FALSE; + } + /* Check if the interrupt handler is more privileged or we're in VM86 mode (again) */ - if ((OldCpl > GET_SEGMENT_RPL(IdtEntry->Selector)) || State->Flags.Vm) - { - if (State->Flags.Vm) - { - /* Clear the VM flag */ - State->Flags.Vm = FALSE; - - /* Push GS, FS, DS and ES */ - if (!Fast486StackPush(State, State->SegmentRegs[FAST486_REG_GS].Selector)) return FALSE; - if (!Fast486StackPush(State, State->SegmentRegs[FAST486_REG_FS].Selector)) return FALSE; - if (!Fast486StackPush(State, State->SegmentRegs[FAST486_REG_DS].Selector)) return FALSE; - if (!Fast486StackPush(State, State->SegmentRegs[FAST486_REG_ES].Selector)) return FALSE; - - /* Now load them with NULL selectors, since they are useless in protected mode */ - if (!Fast486LoadSegment(State, FAST486_REG_GS, 0)) return FALSE; - if (!Fast486LoadSegment(State, FAST486_REG_FS, 0)) return FALSE; - if (!Fast486LoadSegment(State, FAST486_REG_DS, 0)) return FALSE; - if (!Fast486LoadSegment(State, FAST486_REG_ES, 0)) return FALSE; - } - + if ((OldCpl > GET_SEGMENT_RPL(IdtEntry->Selector)) || OldVm) + { /* Push SS selector */ if (!Fast486StackPushInternal(State, GateSize, OldSs)) return FALSE; Modified: trunk/reactos/lib/fast486/common.inl URL: http://svn.reactos.org/svn/reactos/trunk/reactos/lib/fast486/common.inl?rev… ============================================================================== --- trunk/reactos/lib/fast486/common.inl [iso-8859-1] (original) +++ trunk/reactos/lib/fast486/common.inl [iso-8859-1] Sun May 10 21:59:07 2015 @@ -554,8 +554,24 @@ CachedDescriptor = &State->SegmentRegs[Segment]; /* Check for protected mode */ - if ((State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PE) && !State->Flags.Vm) - { + if (State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PE) + { + /* Check for VM86 mode */ + if (State->Flags.Vm) + { + /* Update the cached descriptor with VM86 values */ + CachedDescriptor->Selector = Selector; + CachedDescriptor->Base = Selector << 4; + CachedDescriptor->Limit = 0xFFFF; + CachedDescriptor->ReadWrite = TRUE; + CachedDescriptor->DirConf = FALSE; + CachedDescriptor->SystemType = TRUE; + CachedDescriptor->Dpl = CachedDescriptor->Rpl = 3; + CachedDescriptor->Present = TRUE; + CachedDescriptor->Size = FALSE; + return TRUE; + } + if (!Fast486ReadDescriptorEntry(State, Selector, &Valid, &GdtEntry)) { /* Exception occurred */ Modified: trunk/reactos/lib/fast486/opcodes.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/lib/fast486/opcodes.c?rev=… ============================================================================== --- trunk/reactos/lib/fast486/opcodes.c [iso-8859-1] (original) +++ trunk/reactos/lib/fast486/opcodes.c [iso-8859-1] Sun May 10 21:59:07 2015 @@ -3727,7 +3727,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeMovByteModrm) { - UCHAR FirstValue, SecondValue, Result; + UCHAR Result; FAST486_MOD_REG_RM ModRegRm; BOOLEAN AddressSize = State->SegmentRegs[FAST486_REG_CS].Size; @@ -3743,24 +3743,28 @@ return; } - if (!Fast486ReadModrmByteOperands(State, - &ModRegRm, - &FirstValue, - &SecondValue)) - { - /* Exception occurred */ - return; - } - - if (Opcode & FAST486_OPCODE_WRITE_REG) Result = SecondValue; - else Result = FirstValue; + if (Opcode & FAST486_OPCODE_WRITE_REG) + { + if (!Fast486ReadModrmByteOperands(State, &ModRegRm, NULL, &Result)) + { + /* Exception occurred */ + return; + } + } + else + { + if (!Fast486ReadModrmByteOperands(State, &ModRegRm, &Result, NULL)) + { + /* Exception occurred */ + return; + } + } /* Write back the result */ Fast486WriteModrmByteOperands(State, &ModRegRm, Opcode & FAST486_OPCODE_WRITE_REG, Result); - } FAST486_OPCODE_HANDLER(Fast486OpcodeMovModrm) @@ -3786,19 +3790,26 @@ /* Check the operand size */ if (OperandSize) { - ULONG FirstValue, SecondValue, Result; - - if (!Fast486ReadModrmDwordOperands(State, - &ModRegRm, - &FirstValue, - &SecondValue)) - { - /* Exception occurred */ - return; - } - - if (Opcode & FAST486_OPCODE_WRITE_REG) Result = SecondValue; - else Result = FirstValue; + ULONG Result; + + + + if (Opcode & FAST486_OPCODE_WRITE_REG) + { + if (!Fast486ReadModrmDwordOperands(State, &ModRegRm, NULL, &Result)) + { + /* Exception occurred */ + return; + } + } + else + { + if (!Fast486ReadModrmDwordOperands(State, &ModRegRm, &Result, NULL)) + { + /* Exception occurred */ + return; + } + } /* Write back the result */ Fast486WriteModrmDwordOperands(State, @@ -3808,19 +3819,24 @@ } else { - USHORT FirstValue, SecondValue, Result; - - if (!Fast486ReadModrmWordOperands(State, - &ModRegRm, - &FirstValue, - &SecondValue)) - { - /* Exception occurred */ - return; - } - - if (Opcode & FAST486_OPCODE_WRITE_REG) Result = SecondValue; - else Result = FirstValue; + USHORT Result; + + if (Opcode & FAST486_OPCODE_WRITE_REG) + { + if (!Fast486ReadModrmWordOperands(State, &ModRegRm, NULL, &Result)) + { + /* Exception occurred */ + return; + } + } + else + { + if (!Fast486ReadModrmWordOperands(State, &ModRegRm, &Result, NULL)) + { + /* Exception occurred */ + return; + } + } /* Write back the result */ Fast486WriteModrmWordOperands(State, @@ -4696,10 +4712,16 @@ /* Set the new IP */ State->InstPtr.Long = LOWORD(InstPtr); + /* Set the new SP */ + State->GeneralRegs[FAST486_REG_ESP].Long = StackPtr; + /* Set the new flags */ if (Size) State->Flags.Long = NewFlags.Long & REAL_MODE_FLAGS_MASK; else State->Flags.LowWord = NewFlags.LowWord & REAL_MODE_FLAGS_MASK; State->Flags.AlwaysSet = State->Flags.Vm = TRUE; + + /* Switch to CPL 3 */ + State->Cpl = 3; /* Load the new segments */ if (!Fast486LoadSegment(State, FAST486_REG_CS, CodeSel)) return;

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[pschweitzer] 67644: [NTFS] Don't call MmGetSystemAddressForMdl()
by pschweitzer＠svn.reactos.org 10 May '15

10 May '15

Author: pschweitzer Date: Sun May 10 21:24:51 2015 New Revision: 67644 URL: http://svn.reactos.org/svn/reactos?rev=67644&view=rev Log: [NTFS] Don't call MmGetSystemAddressForMdl() Modified: trunk/reactos/drivers/filesystems/ntfs/dispatch.c trunk/reactos/drivers/filesystems/ntfs/rw.c Modified: trunk/reactos/drivers/filesystems/ntfs/dispatch.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/ntfs/d… ============================================================================== --- trunk/reactos/drivers/filesystems/ntfs/dispatch.c [iso-8859-1] (original) +++ trunk/reactos/drivers/filesystems/ntfs/dispatch.c [iso-8859-1] Sun May 10 21:24:51 2015 @@ -89,8 +89,6 @@ ((IrpContext->Flags & IRPCONTEXT_COMPLETE) && !(IrpContext->Flags & IRPCONTEXT_QUEUE)) || (!(IrpContext->Flags & IRPCONTEXT_COMPLETE) && (IrpContext->Flags & IRPCONTEXT_QUEUE))); - - if (IrpContext->Flags & IRPCONTEXT_COMPLETE) { Irp->IoStatus.Status = Status; Modified: trunk/reactos/drivers/filesystems/ntfs/rw.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/ntfs/r… ============================================================================== --- trunk/reactos/drivers/filesystems/ntfs/rw.c [iso-8859-1] (original) +++ trunk/reactos/drivers/filesystems/ntfs/rw.c [iso-8859-1] Sun May 10 21:24:51 2015 @@ -184,7 +184,7 @@ DeviceExt = DeviceObject->DeviceExtension; ReadLength = Stack->Parameters.Read.Length; ReadOffset = Stack->Parameters.Read.ByteOffset; - Buffer = MmGetSystemAddressForMdl(Irp->MdlAddress); + Buffer = NtfsGetUserBuffer(Irp); Status = NtfsReadFile(DeviceExt, FileObject,

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[tkreuzer] 67643: [RTL] Implement DbgUserBreakPoint and DbgBreakPointWithStatus on ARM
by tkreuzer＠svn.reactos.org 10 May '15

10 May '15

Author: tkreuzer Date: Sun May 10 21:05:01 2015 New Revision: 67643 URL: http://svn.reactos.org/svn/reactos?rev=67643&view=rev Log: [RTL] Implement DbgUserBreakPoint and DbgBreakPointWithStatus on ARM Modified: trunk/reactos/lib/rtl/arm/debug_asm.S Modified: trunk/reactos/lib/rtl/arm/debug_asm.S URL: http://svn.reactos.org/svn/reactos/trunk/reactos/lib/rtl/arm/debug_asm.S?re… ============================================================================== --- trunk/reactos/lib/rtl/arm/debug_asm.S [iso-8859-1] (original) +++ trunk/reactos/lib/rtl/arm/debug_asm.S [iso-8859-1] Sun May 10 21:05:01 2015 @@ -10,72 +10,73 @@ TEXTAREA - NESTED_ENTRY DbgBreakPoint - PROLOG_END DbgBreakPoint + LEAF_ENTRY DbgBreakPoint + __debugbreak + bx lr + LEAF_END DbgBreakPoint - // - // Do a breakpoint and return - // - bkpt BREAKPOINT_BREAK + LEAF_ENTRY DbgUserBreakPoint + __debugbreak bx lr - ENTRY_END DbgBreakPoint + LEAF_END DbgUserBreakPoint - NESTED_ENTRY DebugService - PROLOG_END DebugService + LEAF_ENTRY DbgBreakPointWithStatus + __debugbreak + bx lr + LEAF_END - // - // Do a breakpoint and return - // - bkpt BREAKPOINT_PRINT // Could be prompt too, we check this later + LEAF_ENTRY RtlpBreakWithStatusInstruction + __debugbreak bx lr - ENTRY_END DebugService + LEAF_END - NESTED_ENTRY DebugService2 - PROLOG_END DebugService2 + LEAF_ENTRY DebugService + __debugservice + //bkpt BREAKPOINT_PRINT // Could be prompt too, we check this later + bx lr + LEAF_END DebugService - // - // FIXME-TODO: Do a breakpoint and return - // + LEAF_ENTRY DebugService2 //bkpt BREAKPOINT_LOAD_SYMBOLS // Could be unload too, we check this later bx lr - ENTRY_END DebugService2 + LEAF_END DebugService2 - NESTED_ENTRY RtlCaptureContext - PROLOG_END RtlCaptureContext + LEAF_ENTRY RtlCaptureContext - // // FIXME-PERF: Change to stmdb later - // - str r0, [a1, #CsR0] - str r1, [a1, #CsR1] - str r2, [a1, #CsR2] - str r3, [a1, #CsR3] - str r4, [a1, #CsR4] - str r5, [a1, #CsR5] - str r6, [a1, #CsR6] - str r7, [a1, #CsR7] - str r8, [a1, #CsR8] - str r9, [a1, #CsR9] - str r10, [a1, #CsR10] - str r11, [a1, #CsR11] - str r12, [a1, #CsR12] - str sp, [a1, #CsSp] - str lr, [a1, #CsLr] -// str pc, [a1, #CsPc] // FIXME: error A2193: this instruction generates unpredictable behavior + str r0, [a1, #CxR0] + str r1, [a1, #CxR1] + str r2, [a1, #CxR2] + str r3, [a1, #CxR3] + str r4, [a1, #CxR4] + str r5, [a1, #CxR5] + str r6, [a1, #CxR6] + str r7, [a1, #CxR7] + str r8, [a1, #CxR8] + str r9, [a1, #CxR9] + str r10, [a1, #CxR10] + str r11, [a1, #CxR11] + str r12, [a1, #CxR12] + + str sp, [a1, #CxSp] + str lr, [a1, #CxLr] + + /* Need to do this indirectly, since "str pc, [a1, #CxPc]" generates + unpredictable behavior (error A2193) */ + mov ip, pc + str ip, [a1, #CxPc] mrs ip, spsr - str ip, [a1, #CsCpsr] + str ip, [a1, #CxCpsr] - // - // Set flags - // - mov ip, #CONTEXT_FULL - str ip, [a1, #CsContextFlags] + // FIXME: Fpscr and remaining stuff - // - // Return - // + /* Set flags */ + mov32 r0, #CONTEXT_FULL + str ip, [a1, #CxContextFlags] + + /* Return */ bx lr - ENTRY_END RtlCaptureContext + LEAF_END RtlCaptureContext END /* EOF */

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[tkreuzer] 67642: [CRT] Implement __rt_srsh
by tkreuzer＠svn.reactos.org 10 May '15

10 May '15

Author: tkreuzer Date: Sun May 10 21:04:48 2015 New Revision: 67642 URL: http://svn.reactos.org/svn/reactos?rev=67642&view=rev Log: [CRT] Implement __rt_srsh Modified: trunk/reactos/lib/sdk/crt/math/arm/__rt_srsh.s Modified: trunk/reactos/lib/sdk/crt/math/arm/__rt_srsh.s URL: http://svn.reactos.org/svn/reactos/trunk/reactos/lib/sdk/crt/math/arm/__rt_… ============================================================================== --- trunk/reactos/lib/sdk/crt/math/arm/__rt_srsh.s [iso-8859-1] (original) +++ trunk/reactos/lib/sdk/crt/math/arm/__rt_srsh.s [iso-8859-1] Sun May 10 21:04:48 2015 @@ -13,10 +13,66 @@ TEXTAREA +/* + __int64 + __rt_srsh( + __int64 value, + uint32_t shift); + + R0 = loword of value + R1 = hiword of value + R2 = shift + +*/ + LEAF_ENTRY __rt_srsh - __assertfail - bx lr + /* r3 = 32 - r2 */ + rsbs r3, r2, #32 + + /* Branch if minus (r2 > 32) */ + bmi __rt_srsh2 + + /* r0 = r0 >> r2 (logical shift!) */ + lsr r0, r0, r2 + + /* r3 = r1 << r3 */ + lsl r3, r1, r3 + + /* r0 |= r1 << (32 - r2) */ + orr r0, r0, r3 + + /* r1 = r1 >> r2 (arithmetic shift!) */ + asr r1, r1, r2 + + bx lr + +__rt_srsh2 + + /* Check if shift is > 64 */ + cmp r2, 64 + bhs __rt_srsh3 + + /* r3 = r2 - 32 */ + sub r3, r2, #32 + + /* r0 = r1 >> r3 (arithmetic shift!) */ + asr r0, r1, r3 + + /* r1 = r1 >> 32 (arithmetic shift!) */ + asr r1, r1, #32 + + bx lr + +__rt_srsh3 + + /* r1 = r1 >> 32 (arithmetic shift!) */ + asr r1, r1, #32 + + /* r0 = r1 */ + mov r0, r1 + + bx lr LEAF_END __rt_srsh

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