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Classes
struct	_XMS_HANDLE

struct	_XMS_COPY_DATA

Macros
#define	XMS_ADDRESS 0x110000

#define	XMS_BLOCK_SIZE 1024

#define	XMS_BLOCKS ((MAX_ADDRESS - XMS_ADDRESS) / XMS_BLOCK_SIZE)

#define	XMS_MAX_HANDLES 16

#define	XMS_STATUS_SUCCESS 0x00

#define	XMS_STATUS_NOT_IMPLEMENTED 0x80

#define	XMS_STATUS_A20_ERROR 0x82

#define	XMS_STATUS_HMA_DOES_NOT_EXIST 0x90

#define	XMS_STATUS_HMA_IN_USE 0x91

#define	XMS_STATUS_HMA_MIN_SIZE 0x92

#define	XMS_STATUS_HMA_NOT_ALLOCATED 0x93

#define	XMS_STATUS_A20_STILL_ENABLED 0x94

#define	XMS_STATUS_OUT_OF_MEMORY 0xA0

#define	XMS_STATUS_OUT_OF_HANDLES 0xA1

#define	XMS_STATUS_INVALID_HANDLE 0xA2

#define	XMS_STATUS_BAD_SRC_HANDLE 0xA3

#define	XMS_STATUS_BAD_DEST_HANDLE 0xA4

#define	XMS_STATUS_BAD_SRC_OFFSET 0xA5

#define	XMS_STATUS_BAD_DEST_OFFSET 0xA6

#define	XMS_STATUS_NOT_LOCKED 0xAA

#define	XMS_STATUS_LOCKED 0xAB

#define	XMS_STATUS_LOCK_OVERFLOW 0xAC

#define	XMS_STATUS_CANNOT_LOCK 0xAD

#define	XMS_STATUS_SMALLER_UMB 0xB0

#define	XMS_STATUS_OUT_OF_UMBS 0xB1

#define	XMS_STATUS_INVALID_UMB 0xB2

Typedefs
typedef struct _XMS_HANDLE	XMS_HANDLE

typedef struct _XMS_HANDLE *	PXMS_HANDLE

typedef struct _XMS_COPY_DATA	XMS_COPY_DATA

typedef struct _XMS_COPY_DATA *	PXMS_COPY_DATA

Functions
BOOLEAN	XmsGetDriverEntry (PDWORD Pointer)

VOID	XmsInitialize (VOID)

VOID	XmsCleanup (VOID)

Macro Definition Documentation

◆ XMS_ADDRESS

#define XMS_ADDRESS 0x110000

Definition at line 15 of file himem.h.

◆ XMS_BLOCK_SIZE

#define XMS_BLOCK_SIZE 1024

Definition at line 16 of file himem.h.

◆ XMS_BLOCKS

#define XMS_BLOCKS ((MAX_ADDRESS - XMS_ADDRESS) / XMS_BLOCK_SIZE)

Definition at line 17 of file himem.h.

◆ XMS_MAX_HANDLES

#define XMS_MAX_HANDLES 16

Definition at line 18 of file himem.h.

◆ XMS_STATUS_A20_ERROR

#define XMS_STATUS_A20_ERROR 0x82

Definition at line 22 of file himem.h.

◆ XMS_STATUS_A20_STILL_ENABLED

#define XMS_STATUS_A20_STILL_ENABLED 0x94

Definition at line 27 of file himem.h.

◆ XMS_STATUS_BAD_DEST_HANDLE

#define XMS_STATUS_BAD_DEST_HANDLE 0xA4

Definition at line 32 of file himem.h.

◆ XMS_STATUS_BAD_DEST_OFFSET

#define XMS_STATUS_BAD_DEST_OFFSET 0xA6

Definition at line 34 of file himem.h.

◆ XMS_STATUS_BAD_SRC_HANDLE

#define XMS_STATUS_BAD_SRC_HANDLE 0xA3

Definition at line 31 of file himem.h.

◆ XMS_STATUS_BAD_SRC_OFFSET

#define XMS_STATUS_BAD_SRC_OFFSET 0xA5

Definition at line 33 of file himem.h.

◆ XMS_STATUS_CANNOT_LOCK

#define XMS_STATUS_CANNOT_LOCK 0xAD

Definition at line 38 of file himem.h.

◆ XMS_STATUS_HMA_DOES_NOT_EXIST

#define XMS_STATUS_HMA_DOES_NOT_EXIST 0x90

Definition at line 23 of file himem.h.

◆ XMS_STATUS_HMA_IN_USE

#define XMS_STATUS_HMA_IN_USE 0x91

Definition at line 24 of file himem.h.

◆ XMS_STATUS_HMA_MIN_SIZE

#define XMS_STATUS_HMA_MIN_SIZE 0x92

Definition at line 25 of file himem.h.

◆ XMS_STATUS_HMA_NOT_ALLOCATED

#define XMS_STATUS_HMA_NOT_ALLOCATED 0x93

Definition at line 26 of file himem.h.

◆ XMS_STATUS_INVALID_HANDLE

#define XMS_STATUS_INVALID_HANDLE 0xA2

Definition at line 30 of file himem.h.

◆ XMS_STATUS_INVALID_UMB

#define XMS_STATUS_INVALID_UMB 0xB2

Definition at line 41 of file himem.h.

◆ XMS_STATUS_LOCK_OVERFLOW

#define XMS_STATUS_LOCK_OVERFLOW 0xAC

Definition at line 37 of file himem.h.

◆ XMS_STATUS_LOCKED

#define XMS_STATUS_LOCKED 0xAB

Definition at line 36 of file himem.h.

◆ XMS_STATUS_NOT_IMPLEMENTED

#define XMS_STATUS_NOT_IMPLEMENTED 0x80

Definition at line 21 of file himem.h.

◆ XMS_STATUS_NOT_LOCKED

#define XMS_STATUS_NOT_LOCKED 0xAA

Definition at line 35 of file himem.h.

◆ XMS_STATUS_OUT_OF_HANDLES

#define XMS_STATUS_OUT_OF_HANDLES 0xA1

Definition at line 29 of file himem.h.

◆ XMS_STATUS_OUT_OF_MEMORY

#define XMS_STATUS_OUT_OF_MEMORY 0xA0

Definition at line 28 of file himem.h.

◆ XMS_STATUS_OUT_OF_UMBS

#define XMS_STATUS_OUT_OF_UMBS 0xB1

Definition at line 40 of file himem.h.

◆ XMS_STATUS_SMALLER_UMB

#define XMS_STATUS_SMALLER_UMB 0xB0

Definition at line 39 of file himem.h.

◆ XMS_STATUS_SUCCESS

#define XMS_STATUS_SUCCESS 0x00

Definition at line 20 of file himem.h.

Typedef Documentation

◆ PXMS_COPY_DATA

typedef struct _XMS_COPY_DATA * PXMS_COPY_DATA

◆ PXMS_HANDLE

typedef struct _XMS_HANDLE * PXMS_HANDLE

◆ XMS_COPY_DATA

typedef struct _XMS_COPY_DATA XMS_COPY_DATA

◆ XMS_HANDLE

typedef struct _XMS_HANDLE XMS_HANDLE

Function Documentation

◆ XmsCleanup()

VOID XmsCleanup ( VOID )

Definition at line 814 of file himem.c.

{
    RegisterBop(BOP_XMS, NULL);
    DosDeleteDevice(Node);
}

◆ XmsGetDriverEntry()

BOOLEAN XmsGetDriverEntry ( PDWORD Pointer )

Definition at line 789 of file himem.c.

{
    if (Node == NULL) return FALSE;
    *Pointer = DEVICE_PRIVATE_AREA(Node->Driver);
    return TRUE;
}

Referenced by DosInt2Fh().

◆ XmsInitialize()

VOID XmsInitialize ( VOID )

Definition at line 796 of file himem.c.

{
    RtlZeroMemory(HandleTable, sizeof(HandleTable));
    RtlZeroMemory(BitmapBuffer, sizeof(BitmapBuffer));
    RtlInitializeBitMap(&AllocBitmap, BitmapBuffer, XMS_BLOCKS);
 
    Node = DosCreateDeviceEx(DOS_DEVATTR_IOCTL | DOS_DEVATTR_CHARACTER,
                             XMS_DEVICE_NAME,
                             sizeof(EntryProcedure));
 
    RegisterBop(BOP_XMS, XmsBopProcedure);
 
    /* Copy the entry routine to the device private area */
    RtlMoveMemory(FAR_POINTER(DEVICE_PRIVATE_AREA(Node->Driver)),
                  EntryProcedure,
                  sizeof(EntryProcedure));
}

Referenced by DosKRNLInitialize().

Classes

Macros

Typedefs

Functions