[aandrejevic] 68599: [NTVDM] Implement EMS function AH = 58h "Get Mappable Physical Physical Address Array".

Author: aandrejevic
Date: Wed Aug  5 03:57:28 2015
New Revision: 68599

URL: http://svn.reactos.org/svn/reactos?rev=68599&view=rev
Log:
[NTVDM]
Implement EMS function AH = 58h "Get Mappable Physical Physical Address Array".

Modified:
    trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/emsdrv.c

Modified: trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/emsdrv.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/dos/d...
==============================================================================
--- trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/emsdrv.c	[iso-8859-1] (original)
+++ trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/emsdrv.c	[iso-8859-1] Wed Aug  5 03:57:28 2015
@@ -397,6 +397,39 @@
             break;
         }

+        /* Get Mappable Physical Address Array */
+        case 0x58:
+        {
+            if (getAL() == 0x00)
+            {
+                ULONG i;
+                WORD Offset = getDI();
+
+                for (i = 0; i < EMS_PHYSICAL_PAGES; i++)
+                {
+                    *(PWORD)SEG_OFF_TO_PTR(getES(), Offset++) =
+                    EMS_SEGMENT + i * (EMS_PAGE_SIZE >> 4);
+
+                    *(PWORD)SEG_OFF_TO_PTR(getES(), Offset++) = i;
+                }
+
+                setAH(EMS_STATUS_OK);
+                setCX(EMS_PHYSICAL_PAGES);
+            }
+            else if (getAL() == 0x01)
+            {
+                setAH(EMS_STATUS_OK);
+                setCX(EMS_PHYSICAL_PAGES);
+            }
+            else
+            {
+                DPRINT1("Invalid subfunction %02X for EMS function AH = 58h\n", getAL());
+                setAH(EMS_STATUS_UNKNOWN_FUNCTION);
+            }
+
+            break;
+        }
+
         /* Get Expanded Memory Hardware Information */
         case 0x59:
         {