[hbelusca] 60778: [NTVDM] DOS: Make use of get/setAX and consorts instead of EmulatorGet/SetRegister(EMULATOR_REG_AX, ...). Start to implement real (but undocumented?) behaviour according to http:/...
27 Oct
2013
27 Oct
'13
10:31 p.m.
Author: hbelusca
Date: Sun Oct 27 22:31:53 2013
New Revision: 60778
URL: http://svn.reactos.org/svn/reactos?rev=60778&view=rev
Log:
[NTVDM]
DOS: Make use of get/setAX and consorts instead of
EmulatorGet/SetRegister(EMULATOR_REG_AX, ...).
Start to implement real (but undocumented?) behaviour according to
http://www.delorie.com/djgpp/doc/rbinter/
and http://www.datadoctor.biz/fr/data_recovery_programming_book_chapter6-pageXX…
(change XX by a valid page number)
and http://spike.scu.edu.au/~barry/interrupts.html
Modified:
branches/ntvdm/subsystems/ntvdm/dos.c
branches/ntvdm/subsystems/ntvdm/dos.h
branches/ntvdm/subsystems/ntvdm/ntvdm.h
Modified: branches/ntvdm/subsystems/ntvdm/dos.c
URL:
http://svn.reactos.org/svn/reactos/branches/ntvdm/subsystems/ntvdm/dos.c?re…
==============================================================================
--- branches/ntvdm/subsystems/ntvdm/dos.c [iso-8859-1] (original)
+++ branches/ntvdm/subsystems/ntvdm/dos.c [iso-8859-1] Sun Oct 27 22:31:53 2013
@@ -13,6 +13,8 @@
#include "dos.h"
#include "bios.h"
#include "emulator.h"
+
+#include "registers.h"
/* PRIVATE VARIABLES **********************************************************/
@@ -87,7 +89,7 @@
ULONG TotalSize = 0;
WORD DestSegment;
- Ptr = SourceBuffer = (PCHAR)((ULONG_PTR)BaseAddress + TO_LINEAR(SourceSegment, 0));
+ Ptr = SourceBuffer = (PCHAR)SEG_OFF_TO_PTR(SourceSegment, 0);
/* Calculate the size of the environment block */
while (*Ptr)
@@ -106,7 +108,7 @@
Ptr = SourceBuffer;
- DestBuffer = (PCHAR)((ULONG_PTR)BaseAddress + TO_LINEAR(DestSegment, 0));
+ DestBuffer = (PCHAR)SEG_OFF_TO_PTR(DestSegment, 0);
while (*Ptr)
{
/* Copy the string */
@@ -1105,8 +1107,7 @@
DosChangeMemoryOwner(EnvBlock, Segment);
/* Copy the program to Segment:0100 */
- RtlCopyMemory((PVOID)((ULONG_PTR)BaseAddress
- + TO_LINEAR(Segment, 0x100)),
+ RtlCopyMemory(SEG_OFF_TO_PTR(Segment, 0x100),
Address + (Header->e_cparhdr << 4),
min(FileSize - (Header->e_cparhdr << 4),
(ExeSize << 4) - sizeof(DOS_PSP)));
@@ -1118,17 +1119,16 @@
for (i = 0; i < Header->e_crlc; i++)
{
/* Get a pointer to the word that needs to be patched */
- RelocWord = (PWORD)((ULONG_PTR)BaseAddress
- + TO_LINEAR(Segment + HIWORD(RelocationTable[i]),
- 0x100 + LOWORD(RelocationTable[i])));
+ RelocWord = (PWORD)SEG_OFF_TO_PTR(Segment + HIWORD(RelocationTable[i]),
+ 0x100 + LOWORD(RelocationTable[i]));
/* Add the number of the EXE segment to it */
*RelocWord += Segment + (sizeof(DOS_PSP) >> 4);
}
/* Set the initial segment registers */
- EmulatorSetRegister(EMULATOR_REG_DS, Segment);
- EmulatorSetRegister(EMULATOR_REG_ES, Segment);
+ setDS(Segment);
+ setES(Segment);
/* Set the stack to the location from the header */
EmulatorSetStack(Segment + (sizeof(DOS_PSP) >> 4) + Header->e_ss,
@@ -1161,8 +1161,7 @@
DosChangeMemoryOwner(EnvBlock, Segment);
/* Copy the program to Segment:0100 */
- RtlCopyMemory((PVOID)((ULONG_PTR)BaseAddress
- + TO_LINEAR(Segment, 0x100)),
+ RtlCopyMemory(SEG_OFF_TO_PTR(Segment, 0x100),
Address,
FileSize);
@@ -1173,8 +1172,8 @@
EnvBlock);
/* Set the initial segment registers */
- EmulatorSetRegister(EMULATOR_REG_DS, Segment);
- EmulatorSetRegister(EMULATOR_REG_ES, Segment);
+ setDS(Segment);
+ setES(Segment);
/* Set the stack to the last word of the segment */
EmulatorSetStack(Segment, 0xFFFE);
@@ -1345,8 +1344,7 @@
InfoWord |= 1 << 7;
/* Return the device information word */
- EmulatorSetRegister(EMULATOR_REG_DX, InfoWord);
-
+ setDX(InfoWord);
return TRUE;
}
@@ -1373,15 +1371,9 @@
SYSTEMTIME SystemTime;
PCHAR String;
PDOS_INPUT_BUFFER InputBuffer;
- DWORD Eax = EmulatorGetRegister(EMULATOR_REG_AX);
- DWORD Ecx = EmulatorGetRegister(EMULATOR_REG_CX);
- DWORD Edx = EmulatorGetRegister(EMULATOR_REG_DX);
- DWORD Ebx = EmulatorGetRegister(EMULATOR_REG_BX);
- WORD DataSegment = (WORD)EmulatorGetRegister(EMULATOR_REG_DS);
- WORD ExtSegment = (WORD)EmulatorGetRegister(EMULATOR_REG_ES);
/* Check the value in the AH register */
- switch (HIBYTE(Eax))
+ switch (getAH())
{
/* Terminate Program */
case 0x00:
@@ -1396,45 +1388,58 @@
Character = DosReadCharacter();
DosPrintCharacter(Character);
- if (!EmulatorGetFlag(EMULATOR_FLAG_CF))
- {
- EmulatorSetRegister(EMULATOR_REG_AX, (Eax & 0xFFFFFF00) |
Character);
- }
-
+ /* Let the BOP repeat if needed */
+ if (EmulatorGetFlag(EMULATOR_FLAG_CF)) break;
+
+ setAL(Character);
break;
}
/* Print Character */
case 0x02:
{
- DosPrintCharacter(LOBYTE(Edx));
+ BYTE Character = getDL();
+ DosPrintCharacter(Character);
+
+ /*
+ * We return the output character (DOS 2.1+), see:
+ * http://www.delorie.com/djgpp/doc/rbinter/id/65/25.html
+ * for more information.
+ */
+ setAL(Character);
break;
}
/* Direct Console I/O */
case 0x06:
{
- BYTE Character = LOBYTE(Edx);
+ BYTE Character = getDL();
if (Character != 0xFF)
{
/* Output */
DosPrintCharacter(Character);
+
+ /*
+ * We return the output character (DOS 2.1+), see:
+ * http://www.delorie.com/djgpp/doc/rbinter/id/69/25.html
+ * for more information.
+ */
+ setAL(Character);
}
else
{
/* Input */
- Eax &= 0xFFFFFF00;
-
if (DosCheckInput())
{
- Eax |= DosReadCharacter();
Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_ZF;
+ setAL(DosReadCharacter());
}
else
{
/* No character available */
Stack[STACK_FLAGS] |= EMULATOR_FLAG_ZF;
+ setAL(0);
}
}
@@ -1447,35 +1452,37 @@
{
Character = DosReadCharacter();
- if (!EmulatorGetFlag(EMULATOR_FLAG_CF))
- {
- EmulatorSetRegister(EMULATOR_REG_AX, (Eax & 0xFFFFFF00) |
Character);
- }
-
+ /* Let the BOP repeat if needed */
+ if (EmulatorGetFlag(EMULATOR_FLAG_CF)) break;
+
+ setAL(Character);
break;
}
/* Print String */
case 0x09:
{
- String = (PCHAR)((ULONG_PTR)BaseAddress
- + TO_LINEAR(DataSegment, LOWORD(Edx)));
-
- while ((*String) != '$')
+ String = (PCHAR)SEG_OFF_TO_PTR(getDS(), getDX());
+
+ while (*String != '$')
{
DosPrintCharacter(*String);
String++;
}
+ /*
+ * We return the output character (DOS 2.1+), see:
+ * http://www.delorie.com/djgpp/doc/rbinter/id/73/25.html
+ * for more information.
+ */
+ setAL('$');
break;
}
/* Read Buffered Input */
case 0x0A:
{
- InputBuffer = (PDOS_INPUT_BUFFER)((ULONG_PTR)BaseAddress
- + TO_LINEAR(DataSegment,
- LOWORD(Edx)));
+ InputBuffer = (PDOS_INPUT_BUFFER)SEG_OFF_TO_PTR(getDS(), getDX());
while (Stack[STACK_COUNTER] < InputBuffer->MaxLength)
{
@@ -1495,54 +1502,45 @@
/* Update the length */
InputBuffer->Length = Stack[STACK_COUNTER];
-
break;
}
/* Get STDIN Status */
case 0x0B:
{
- if (DosCheckInput()) Eax |= 0xFF;
- else Eax &= 0xFFFFFF00;
-
- EmulatorSetRegister(EMULATOR_REG_AX, Eax);
-
+ setAL(DosCheckInput() ? 0xFF : 0x00);
break;
}
/* Set Default Drive */
case 0x0E:
{
- DosChangeDrive(LOBYTE(Edx));
- EmulatorSetRegister(EMULATOR_REG_AX,
- (Eax & 0xFFFFFF00) | (LastDrive - 'A' + 1));
-
+ DosChangeDrive(getDL());
+ setAL(LastDrive - 'A' + 1);
break;
}
/* Get Default Drive */
case 0x19:
{
- EmulatorSetRegister(EMULATOR_REG_AX,
- (Eax & 0xFFFFFF00) | CurrentDrive);
-
+ setAL(CurrentDrive);
break;
}
/* Set Disk Transfer Area */
case 0x1A:
{
- DiskTransferArea = MAKELONG(LOWORD(Edx), DataSegment);
+ DiskTransferArea = MAKELONG(getDX(), getDS());
break;
}
/* Set Interrupt Vector */
case 0x25:
{
- DWORD FarPointer = MAKELONG(LOWORD(Edx), DataSegment);
+ DWORD FarPointer = MAKELONG(getDX(), getDS());
/* Write the new far pointer to the IDT */
- ((PDWORD)BaseAddress)[LOBYTE(Eax)] = FarPointer;
+ ((PDWORD)BaseAddress)[getAL()] = FarPointer;
break;
}
@@ -1551,14 +1549,9 @@
case 0x2A:
{
GetLocalTime(&SystemTime);
- EmulatorSetRegister(EMULATOR_REG_CX,
- (Ecx & 0xFFFF0000) | SystemTime.wYear);
- EmulatorSetRegister(EMULATOR_REG_DX,
- (Edx & 0xFFFF0000)
- | (SystemTime.wMonth << 8)
- | SystemTime.wDay);
- EmulatorSetRegister(EMULATOR_REG_AX,
- (Eax & 0xFFFFFF00) | SystemTime.wDayOfWeek);
+ setCX(SystemTime.wYear);
+ setDX(MAKEWORD(SystemTime.wDay, SystemTime.wMonth));
+ setAL(SystemTime.wDayOfWeek);
break;
}
@@ -1566,21 +1559,12 @@
case 0x2B:
{
GetLocalTime(&SystemTime);
- SystemTime.wYear = LOWORD(Ecx);
- SystemTime.wMonth = HIBYTE(Edx);
- SystemTime.wDay = LOBYTE(Edx);
-
- if (SetLocalTime(&SystemTime))
- {
- /* Return success */
- EmulatorSetRegister(EMULATOR_REG_AX, Eax & 0xFFFFFF00);
- }
- else
- {
- /* Return failure */
- EmulatorSetRegister(EMULATOR_REG_AX, Eax | 0xFF);
- }
-
+ SystemTime.wYear = getCX();
+ SystemTime.wMonth = getDH();
+ SystemTime.wDay = getDL();
+
+ /* Return success or failure */
+ setAL(SetLocalTime(&SystemTime) ? 0x00 : 0xFF);
break;
}
@@ -1588,14 +1572,8 @@
case 0x2C:
{
GetLocalTime(&SystemTime);
- EmulatorSetRegister(EMULATOR_REG_CX,
- (Ecx & 0xFFFF0000)
- | (SystemTime.wHour << 8)
- | SystemTime.wMinute);
- EmulatorSetRegister(EMULATOR_REG_DX,
- (Edx & 0xFFFF0000)
- | (SystemTime.wSecond << 8)
- | (SystemTime.wMilliseconds / 10));
+ setCX(MAKEWORD(SystemTime.wMinute, SystemTime.wHour));
+ setDX(MAKEWORD(SystemTime.wMilliseconds / 10, SystemTime.wSecond));
break;
}
@@ -1603,31 +1581,21 @@
case 0x2D:
{
GetLocalTime(&SystemTime);
- SystemTime.wHour = HIBYTE(Ecx);
- SystemTime.wMinute = LOBYTE(Ecx);
- SystemTime.wSecond = HIBYTE(Edx);
- SystemTime.wMilliseconds = LOBYTE(Edx) * 10;
-
- if (SetLocalTime(&SystemTime))
- {
- /* Return success */
- EmulatorSetRegister(EMULATOR_REG_AX, Eax & 0xFFFFFF00);
- }
- else
- {
- /* Return failure */
- EmulatorSetRegister(EMULATOR_REG_AX, Eax | 0xFF);
- }
-
+ SystemTime.wHour = getCH();
+ SystemTime.wMinute = getCL();
+ SystemTime.wSecond = getDH();
+ SystemTime.wMilliseconds = getDL() * 10; // In hundredths of seconds
+
+ /* Return success or failure */
+ setAL(SetLocalTime(&SystemTime) ? 0x00 : 0xFF);
break;
}
/* Get Disk Transfer Area */
case 0x2F:
{
- EmulatorSetRegister(EMULATOR_REG_ES, HIWORD(DiskTransferArea));
- EmulatorSetRegister(EMULATOR_REG_BX, LOWORD(DiskTransferArea));
-
+ setES(HIWORD(DiskTransferArea));
+ setBX(LOWORD(DiskTransferArea));
break;
}
@@ -1636,27 +1604,44 @@
{
PDOS_PSP PspBlock = SEGMENT_TO_PSP(CurrentPsp);
- EmulatorSetRegister(EMULATOR_REG_AX, PspBlock->DosVersion);
+ if (LOBYTE(PspBlock->DosVersion) < 5 || getAL() == 0)
+ {
+ /* Return DOS 24-bit user serial number in BL:CX */
+ setBL(0x00);
+ setCX(0x0000);
+ }
+
+ if (LOBYTE(PspBlock->DosVersion) >= 5 && getAL() == 1)
+ {
+ /*
+ * Return DOS OEM number:
+ * 0x00 for IBM PC-DOS
+ * 0xFF for MS-DOS
+ */
+ setBH(0xFF);
+ }
+
+ /* Return DOS version: Minor:Major in AH:AL */
+ setAX(PspBlock->DosVersion);
+
break;
}
/* Get Interrupt Vector */
case 0x35:
{
- DWORD FarPointer = ((PDWORD)BaseAddress)[LOBYTE(Eax)];
+ DWORD FarPointer = ((PDWORD)BaseAddress)[getAL()];
/* Read the address from the IDT into ES:BX */
- EmulatorSetRegister(EMULATOR_REG_ES, HIWORD(FarPointer));
- EmulatorSetRegister(EMULATOR_REG_BX, LOWORD(FarPointer));
-
+ setES(HIWORD(FarPointer));
+ setBX(LOWORD(FarPointer));
break;
}
/* Create Directory */
case 0x39:
{
- String = (PCHAR)((ULONG_PTR)BaseAddress
- + TO_LINEAR(DataSegment, LOWORD(Edx)));
+ String = (PCHAR)SEG_OFF_TO_PTR(getDS(), getDX());
if (CreateDirectoryA(String, NULL))
{
@@ -1665,8 +1650,7 @@
else
{
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
- EmulatorSetRegister(EMULATOR_REG_AX,
- (Eax & 0xFFFF0000) | LOWORD(GetLastError()));
+ setAX(LOWORD(GetLastError()));
}
break;
@@ -1675,8 +1659,7 @@
/* Remove Directory */
case 0x3A:
{
- String = (PCHAR)((ULONG_PTR)BaseAddress
- + TO_LINEAR(DataSegment, LOWORD(Edx)));
+ String = (PCHAR)SEG_OFF_TO_PTR(getDS(), getDX());
if (RemoveDirectoryA(String))
{
@@ -1685,10 +1668,8 @@
else
{
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
- EmulatorSetRegister(EMULATOR_REG_AX,
- (Eax & 0xFFFF0000) | LOWORD(GetLastError()));
- }
-
+ setAX(LOWORD(GetLastError()));
+ }
break;
}
@@ -1696,8 +1677,7 @@
/* Set Current Directory */
case 0x3B:
{
- String = (PCHAR)((ULONG_PTR)BaseAddress
- + TO_LINEAR(DataSegment, LOWORD(Edx)));
+ String = (PCHAR)SEG_OFF_TO_PTR(getDS(), getDX());
if (DosChangeDirectory(String))
{
@@ -1706,8 +1686,7 @@
else
{
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
- EmulatorSetRegister(EMULATOR_REG_AX,
- (Eax & 0xFFFF0000) | DosLastError);
+ setAX(DosLastError);
}
break;
@@ -1718,27 +1697,18 @@
{
WORD FileHandle;
WORD ErrorCode = DosCreateFile(&FileHandle,
- (LPCSTR)(ULONG_PTR)BaseAddress
- + TO_LINEAR(DataSegment, LOWORD(Edx)),
- LOWORD(Ecx));
+ (LPCSTR)SEG_OFF_TO_PTR(getDS(), getDX()),
+ getCX());
if (ErrorCode == 0)
{
- /* Clear CF */
Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
-
- /* Return the handle in AX */
- EmulatorSetRegister(EMULATOR_REG_AX,
- (Eax & 0xFFFF0000) | FileHandle);
+ setAX(FileHandle);
}
else
{
- /* Set CF */
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
-
- /* Return the error code in AX */
- EmulatorSetRegister(EMULATOR_REG_AX,
- (Eax & 0xFFFF0000) | ErrorCode);
+ setAX(ErrorCode);
}
break;
@@ -1749,27 +1719,18 @@
{
WORD FileHandle;
WORD ErrorCode = DosOpenFile(&FileHandle,
- (LPCSTR)(ULONG_PTR)BaseAddress
- + TO_LINEAR(DataSegment, LOWORD(Edx)),
- LOBYTE(Eax));
+ (LPCSTR)SEG_OFF_TO_PTR(getDS(), getDX()),
+ getAL());
if (ErrorCode == 0)
{
- /* Clear CF */
Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
-
- /* Return the handle in AX */
- EmulatorSetRegister(EMULATOR_REG_AX,
- (Eax & 0xFFFF0000) | FileHandle);
+ setAX(FileHandle);
}
else
{
- /* Set CF */
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
-
- /* Return the error code in AX */
- EmulatorSetRegister(EMULATOR_REG_AX,
- (Eax & 0xFFFF0000) | ErrorCode);
+ setAX(ErrorCode);
}
break;
@@ -1778,19 +1739,14 @@
/* Close File */
case 0x3E:
{
- if (DosCloseHandle(LOWORD(Ebx)))
- {
- /* Clear CF */
+ if (DosCloseHandle(getBX()))
+ {
Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
}
else
{
- /* Set CF */
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
-
- /* Return the error code in AX */
- EmulatorSetRegister(EMULATOR_REG_AX,
- (Eax & 0xFFFF0000) | ERROR_INVALID_HANDLE);
+ setAX(ERROR_INVALID_HANDLE);
}
break;
@@ -1799,9 +1755,9 @@
/* Read File */
case 0x3F:
{
- WORD Handle = LOWORD(Ebx);
- LPBYTE Buffer = (LPBYTE)((ULONG_PTR)BaseAddress + TO_LINEAR(DataSegment,
LOWORD(Edx)));
- WORD Count = LOWORD(Ecx);
+ WORD Handle = getBX();
+ LPBYTE Buffer = (LPBYTE)SEG_OFF_TO_PTR(getDS(), getDX());
+ WORD Count = getCX();
WORD BytesRead = 0;
WORD ErrorCode = ERROR_SUCCESS;
@@ -1830,21 +1786,13 @@
if (ErrorCode == 0)
{
- /* Clear CF */
- Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
-
- /* Return the number of bytes read in AX */
- EmulatorSetRegister(EMULATOR_REG_AX,
- (Eax & 0xFFFF0000) | BytesRead);
+ Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
+ setAX(BytesRead);
}
else if (ErrorCode != ERROR_NOT_READY)
{
- /* Set CF */
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
-
- /* Return the error code in AX */
- EmulatorSetRegister(EMULATOR_REG_AX,
- (Eax & 0xFFFF0000) | ErrorCode);
+ setAX(ErrorCode);
}
break;
}
@@ -1853,29 +1801,20 @@
case 0x40:
{
WORD BytesWritten = 0;
- WORD ErrorCode = DosWriteFile(LOWORD(Ebx),
- (LPVOID)((ULONG_PTR)BaseAddress
- + TO_LINEAR(DataSegment, LOWORD(Edx))),
- LOWORD(Ecx),
+ WORD ErrorCode = DosWriteFile(getBX(),
+ SEG_OFF_TO_PTR(getDS(), getDX()),
+ getCX(),
&BytesWritten);
if (ErrorCode == 0)
{
- /* Clear CF */
Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
-
- /* Return the number of bytes written in AX */
- EmulatorSetRegister(EMULATOR_REG_AX,
- (Eax & 0xFFFF0000) | BytesWritten);
+ setAX(BytesWritten);
}
else
{
- /* Set CF */
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
-
- /* Return the error code in AX */
- EmulatorSetRegister(EMULATOR_REG_AX,
- (Eax & 0xFFFF0000) | ErrorCode);
+ setAX(ErrorCode);
}
break;
@@ -1884,14 +1823,17 @@
/* Delete File */
case 0x41:
{
- LPSTR FileName = (LPSTR)((ULONG_PTR)BaseAddress + TO_LINEAR(DataSegment,
Edx));
+ LPSTR FileName = (LPSTR)SEG_OFF_TO_PTR(getDS(), getDX());
/* Call the API function */
- if (DeleteFileA(FileName)) Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
+ if (DeleteFileA(FileName))
+ {
+ Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
+ }
else
{
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
- EmulatorSetRegister(EMULATOR_REG_AX, GetLastError());
+ setAX(GetLastError());
}
break;
@@ -1901,30 +1843,23 @@
case 0x42:
{
DWORD NewLocation;
- WORD ErrorCode = DosSeekFile(LOWORD(Ebx),
- MAKELONG(LOWORD(Edx), LOWORD(Ecx)),
- LOBYTE(Eax),
+ WORD ErrorCode = DosSeekFile(getBX(),
+ MAKELONG(getDX(), getCX()),
+ getAL(),
&NewLocation);
if (ErrorCode == 0)
{
- /* Clear CF */
Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
/* Return the new offset in DX:AX */
- EmulatorSetRegister(EMULATOR_REG_DX,
- (Edx & 0xFFFF0000) | HIWORD(NewLocation));
- EmulatorSetRegister(EMULATOR_REG_AX,
- (Eax & 0xFFFF0000) | LOWORD(NewLocation));
+ setDX(HIWORD(NewLocation));
+ setAX(LOWORD(NewLocation));
}
else
{
- /* Set CF */
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
-
- /* Return the error code in AX */
- EmulatorSetRegister(EMULATOR_REG_AX,
- (Eax & 0xFFFF0000) | ErrorCode);
+ setAX(ErrorCode);
}
break;
@@ -1934,9 +1869,9 @@
case 0x43:
{
DWORD Attributes;
- LPSTR FileName = (LPSTR)((ULONG_PTR)BaseAddress + TO_LINEAR(DataSegment,
Edx));
-
- if (LOBYTE(Eax) == 0x00)
+ LPSTR FileName = (LPSTR)SEG_OFF_TO_PTR(getDS(), getDX());
+
+ if (getAL() == 0x00)
{
/* Get the attributes */
Attributes = GetFileAttributesA(FileName);
@@ -1945,33 +1880,32 @@
if (Attributes == INVALID_FILE_ATTRIBUTES)
{
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
- EmulatorSetRegister(EMULATOR_REG_AX, GetLastError());
-
+ setAX(GetLastError());
break;
}
/* Return the attributes that DOS can understand */
Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
- EmulatorSetRegister(EMULATOR_REG_CX,
- (Ecx & 0xFFFFFF00) | LOBYTE(Attributes));
- }
- else if (LOBYTE(Eax) == 0x01)
+ // setCL(LOBYTE(Attributes));
+ setCX(LOWORD(Attributes));
+ }
+ else if (getAL() == 0x01)
{
/* Try to set the attributes */
- if (SetFileAttributesA(FileName, LOBYTE(Ecx)))
+ if (SetFileAttributesA(FileName, getCL()))
{
Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
}
else
{
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
- EmulatorSetRegister(EMULATOR_REG_AX, GetLastError());
+ setAX(GetLastError());
}
}
else
{
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
- EmulatorSetRegister(EMULATOR_REG_AX, ERROR_INVALID_FUNCTION);
+ setAX(ERROR_INVALID_FUNCTION);
}
break;
@@ -1980,14 +1914,14 @@
/* IOCTL */
case 0x44:
{
- if (DosHandleIoctl(LOBYTE(Eax), LOWORD(Ebx)))
+ if (DosHandleIoctl(getAL(), getBX()))
{
Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
}
else
{
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
- EmulatorSetRegister(EMULATOR_REG_AX, DosLastError);
+ setAX(DosLastError);
}
break;
@@ -1997,14 +1931,13 @@
case 0x45:
{
WORD NewHandle;
- HANDLE Handle = DosGetRealHandle(LOWORD(Ebx));
+ HANDLE Handle = DosGetRealHandle(getBX());
if (Handle != INVALID_HANDLE_VALUE)
{
/* The handle is invalid */
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
- EmulatorSetRegister(EMULATOR_REG_AX, ERROR_INVALID_HANDLE);
-
+ setAX(ERROR_INVALID_HANDLE);
break;
}
@@ -2015,29 +1948,27 @@
{
/* Too many files open */
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
- EmulatorSetRegister(EMULATOR_REG_AX, ERROR_TOO_MANY_OPEN_FILES);
-
+ setAX(ERROR_TOO_MANY_OPEN_FILES);
break;
}
/* Return the result */
Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
- EmulatorSetRegister(EMULATOR_REG_AX, NewHandle);
-
+ setAX(NewHandle);
break;
}
/* Force Duplicate Handle */
case 0x46:
{
- if (DosDuplicateHandle(LOWORD(Ebx), LOWORD(Ecx)))
+ if (DosDuplicateHandle(getBX(), getCX()))
{
Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
}
else
{
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
- EmulatorSetRegister(EMULATOR_REG_AX, ERROR_INVALID_HANDLE);
+ setAX(ERROR_INVALID_HANDLE);
}
break;
@@ -2047,18 +1978,18 @@
case 0x48:
{
WORD MaxAvailable = 0;
- WORD Segment = DosAllocateMemory(LOWORD(Ebx), &MaxAvailable);
+ WORD Segment = DosAllocateMemory(getBX(), &MaxAvailable);
if (Segment != 0)
{
- EmulatorSetRegister(EMULATOR_REG_AX, Segment);
Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
+ setAX(Segment);
}
else
{
- EmulatorSetRegister(EMULATOR_REG_AX, DosLastError);
- EmulatorSetRegister(EMULATOR_REG_BX, MaxAvailable);
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
+ setAX(DosLastError);
+ setBX(MaxAvailable);
}
break;
@@ -2067,14 +1998,14 @@
/* Free Memory */
case 0x49:
{
- if (DosFreeMemory(ExtSegment))
+ if (DosFreeMemory(getES()))
{
Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
}
else
{
- EmulatorSetRegister(EMULATOR_REG_AX, ERROR_ARENA_TRASHED);
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
+ setAX(ERROR_ARENA_TRASHED);
}
break;
@@ -2085,15 +2016,15 @@
{
WORD Size;
- if (DosResizeMemory(ExtSegment, LOWORD(Ebx), &Size))
+ if (DosResizeMemory(getES(), getBX(), &Size))
{
Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
}
else
{
- EmulatorSetRegister(EMULATOR_REG_AX, DosLastError);
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
- EmulatorSetRegister(EMULATOR_REG_BX, Size);
+ setAX(DosLastError);
+ setBX(Size);
}
break;
@@ -2102,75 +2033,68 @@
/* Terminate With Return Code */
case 0x4C:
{
- DosTerminateProcess(CurrentPsp, LOBYTE(Eax));
+ DosTerminateProcess(CurrentPsp, getAL());
break;
}
/* Get Current Process */
case 0x51:
{
- EmulatorSetRegister(EMULATOR_REG_BX, CurrentPsp);
-
+ setBX(CurrentPsp);
break;
}
/* Get/Set Memory Management Options */
case 0x58:
{
- if (LOBYTE(Eax) == 0x00)
+ if (getAL() == 0x00)
{
/* Get allocation strategy */
-
- EmulatorSetRegister(EMULATOR_REG_AX, DosAllocStrategy);
Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
- }
- else if (LOBYTE(Eax) == 0x01)
+ setAX(DosAllocStrategy);
+ }
+ else if (getAL() == 0x01)
{
/* Set allocation strategy */
- if ((LOBYTE(Ebx) & (DOS_ALLOC_HIGH | DOS_ALLOC_HIGH_LOW))
+ if ((getBL() & (DOS_ALLOC_HIGH | DOS_ALLOC_HIGH_LOW))
== (DOS_ALLOC_HIGH | DOS_ALLOC_HIGH_LOW))
{
/* Can't set both */
- EmulatorSetRegister(EMULATOR_REG_AX, ERROR_INVALID_PARAMETER);
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
+ setAX(ERROR_INVALID_PARAMETER);
break;
}
- if ((LOBYTE(Ebx) & 0x3F) > DOS_ALLOC_LAST_FIT)
+ if ((getBL() & 0x3F) > DOS_ALLOC_LAST_FIT)
{
/* Invalid allocation strategy */
- EmulatorSetRegister(EMULATOR_REG_AX, ERROR_INVALID_PARAMETER);
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
+ setAX(ERROR_INVALID_PARAMETER);
break;
}
- DosAllocStrategy = LOBYTE(Ebx);
+ DosAllocStrategy = getBL();
Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
}
- else if (LOBYTE(Eax) == 0x02)
+ else if (getAL() == 0x02)
{
/* Get UMB link state */
-
- Eax &= 0xFFFFFF00;
- if (DosUmbLinked) Eax |= 1;
- EmulatorSetRegister(EMULATOR_REG_AX, Eax);
Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
- }
- else if (LOBYTE(Eax) == 0x03)
+ setAL(DosUmbLinked ? 0x01 : 0x00);
+ }
+ else if (getAL() == 0x03)
{
/* Set UMB link state */
-
- if (Ebx) DosLinkUmb();
+ if (getBX()) DosLinkUmb();
else DosUnlinkUmb();
Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
}
else
{
/* Invalid or unsupported function */
-
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
- EmulatorSetRegister(EMULATOR_REG_AX, ERROR_INVALID_FUNCTION);
+ setAX(ERROR_INVALID_FUNCTION);
}
break;
@@ -2179,7 +2103,7 @@
/* Unsupported */
default:
{
- DPRINT1("DOS Function INT 0x21, AH = 0x%02X NOT IMPLEMENTED!\n",
HIBYTE(Eax));
+ DPRINT1("DOS Function INT 0x21, AH = 0x%02X NOT IMPLEMENTED!\n",
getAH());
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
}
}
@@ -2200,7 +2124,7 @@
WCHAR Buffer[256];
LPWSTR SourcePtr, Environment;
LPSTR AsciiString;
- LPSTR DestPtr = (LPSTR)((ULONG_PTR)BaseAddress + TO_LINEAR(SYSTEM_ENV_BLOCK, 0));
+ LPSTR DestPtr = (LPSTR)SEG_OFF_TO_PTR(SYSTEM_ENV_BLOCK, 0);
DWORD AsciiSize;
CHAR CurrentDirectory[MAX_PATH];
CHAR DosDirectory[DOS_DIR_LENGTH];
Modified: branches/ntvdm/subsystems/ntvdm/dos.h
URL:
http://svn.reactos.org/svn/reactos/branches/ntvdm/subsystems/ntvdm/dos.h?re…
==============================================================================
--- branches/ntvdm/subsystems/ntvdm/dos.h [iso-8859-1] (original)
+++ branches/ntvdm/subsystems/ntvdm/dos.h [iso-8859-1] Sun Oct 27 22:31:53 2013
@@ -15,7 +15,11 @@
/* DEFINES ********************************************************************/
+//
+// We are DOS 6.00
+//
#define DOS_VERSION MAKEWORD(6, 0)
+
#define DOS_CONFIG_PATH L"%SystemRoot%\\system32\\CONFIG.NT"
#define DOS_COMMAND_INTERPRETER L"%SystemRoot%\\system32\\COMMAND.COM /k
%SystemRoot%\\system32\\AUTOEXEC.NT"
#define FIRST_MCB_SEGMENT 0x1000
Modified: branches/ntvdm/subsystems/ntvdm/ntvdm.h
URL:
http://svn.reactos.org/svn/reactos/branches/ntvdm/subsystems/ntvdm/ntvdm.h?…
==============================================================================
--- branches/ntvdm/subsystems/ntvdm/ntvdm.h [iso-8859-1] (original)
+++ branches/ntvdm/subsystems/ntvdm/ntvdm.h [iso-8859-1] Sun Oct 27 22:31:53 2013
@@ -23,11 +23,14 @@
#define TO_LINEAR(seg, off) (((seg) << 4) + (off))
#define MAX_SEGMENT 0xFFFF
-#define MAX_OFFSET 0xFFFF
+#define MAX_OFFSET 0xFFFF
#define MAX_ADDRESS TO_LINEAR(MAX_SEGMENT, MAX_OFFSET)
-#define FAR_POINTER(x) ((ULONG_PTR)BaseAddress + TO_LINEAR(HIWORD(x),
LOWORD(x)))
-#define SEG_OFF_TO_PTR(seg, off) ((ULONG_PTR)BaseAddress + TO_LINEAR((seg), (off)))
+#define FAR_POINTER(x) \
+ (PVOID)((ULONG_PTR)BaseAddress + TO_LINEAR(HIWORD(x), LOWORD(x)))
+
+#define SEG_OFF_TO_PTR(seg, off) \
+ (PVOID)((ULONG_PTR)BaseAddress + TO_LINEAR((seg), (off)))
#define STEPS_PER_CYCLE 256
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hbelusca＠svn.reactos.org