1 files changed, 167 insertions, 0 deletions
diff --git a/private/mvdm/xms.486/xmsmemr.c b/private/mvdm/xms.486/xmsmemr.c
new file mode 100644
index 000000000..9a495d671
--- /dev/null
+++ b/private/mvdm/xms.486/xmsmemr.c
@@ -0,0 +1,167 @@
+/*++
+
+Copyright (c) 1992  Microsoft Corporation
+
+Module Name:
+
+    xmscmt86.c
+
+Abstract:
+
+    This module conains the memory commit/decommit/move routines
+    for risc.
+
+Author:
+
+    Dave Hastings (daveh) creation-date 25-Jan-1994
+
+Revision History:
+
+
+--*/
+#include <xms.h>
+#include <suballoc.h>
+#include <softpc.h>
+
+NTSTATUS
+xmsCommitBlock(
+    ULONG BaseAddress,
+    ULONG Size
+    )
+/*++
+
+Routine Description:
+
+    This routine commits a block of memory using sas_manage_xms.
+
+Arguments:
+
+    BaseAddress -- Supplies the base address to commit memory at
+    Size -- Supplies the size of the block to commit
+    
+Return Value:
+
+    0 if successfull
+
+--*/
+{
+    BOOL Status;
+    
+    //
+    // Perform the allocation
+    //
+    Status = sas_manage_xms( 
+        (PVOID)BaseAddress,
+        Size,
+        1
+        );
+
+    //
+    // We elected to have 0 indicate success, because that allows
+    // us to directly pass back NTSTATUS codes.  On x86 we use
+    // NT memory management to do the commit for us, and the returned
+    // status code contains more information than just success or failure
+    //
+    
+    if (Status) {
+        return STATUS_SUCCESS;
+    } else {
+        return -1;
+    }
+}
+
+NTSTATUS
+xmsDecommitBlock(
+    ULONG BaseAddress,
+    ULONG Size
+    )
+/*++
+
+Routine Description:
+
+    This routine commits a block of memory using sas_manage_xms.
+
+Arguments:
+
+    BaseAddress -- Supplies the base address to decommit memory at
+    Size -- Supplies the size of the block to decommit
+    
+Return Value:
+
+    0 if successful
+
+--*/
+{
+    BOOL Status;
+    
+    //
+    // Perform the allocation
+    //
+    Status = sas_manage_xms(
+        (PVOID)BaseAddress,
+        Size,
+        2
+        );
+        
+    //
+    // We elected to have 0 indicate success, because that allows
+    // us to directly pass back NTSTATUS codes.  On x86 we use
+    // NT memory management to do the commit for us, and the returned
+    // status code contains more information than just success or failure
+    //
+    if (Status) {
+        return STATUS_SUCCESS;
+    } else {
+        return -1;
+    }
+}
+
+VOID
+xmsMoveMemory(
+    ULONG Destination,
+    ULONG Source,
+    ULONG Count
+    )
+/*++
+
+Routine Description:
+
+    This routine moves a block of memory, and notifies the emulator.
+    It correctly handles overlapping source and destination
+
+Arguments:
+
+    Destination -- Supplies a pointer to the destination Intel (NOT Linear)
+        Address
+    Source -- Supplies a pointer to the source Intel Address
+    Count -- Supplies the number of bytes to move
+    
+Return Value:
+
+    None.
+
+--*/
+{
+    ULONG SoftpcBase;
+    
+    //
+    // Get the linear address of the beginning of Intel memory
+    //
+    SoftpcBase = (ULONG) GetVDMAddr(0,0);
+    
+    //
+    // Move the memory
+    //
+    RtlMoveMemory(
+        (PVOID)((ULONG)Destination + SoftpcBase),
+        (PVOID)((ULONG)Source + SoftpcBase),
+        Count
+        );
+
+    // WARNING!!!! Donot use Sim32FlushVDMPoiner unless you know the exact segment
+    // address. In this case, we have no idea what the segment value is, all we
+    // know is its "linear address".
+
+    sas_overwrite_memory((PBYTE)Destination, Count);
+
+}