[hbelusca] 66671: [NTVDM] - cpu.c: Convert the faulting address to "real" (VM) address before calling the exception handler. - ems.c: Simplify code by using ARRAY_INDEX; some poiters should point t...

Author: hbelusca
Date: Sat Mar 14 01:45:50 2015
New Revision: 66671

URL: http://svn.reactos.org/svn/reactos?rev=66671&view=rev
Log:
[NTVDM]
- cpu.c: Convert the faulting address to "real" (VM) address before calling the exception handler.
- ems.c: Simplify code by using ARRAY_INDEX; some poiters should point to physical memory.
- ems.c: Memory hook addresses should be "real".
- memory.c: Remove an extra MemFastMoveMemory call; really use IsListEmpty (was commented by error in my previous commit).

Modified:
    trunk/reactos/subsystems/mvdm/ntvdm/cpu/cpu.c
    trunk/reactos/subsystems/mvdm/ntvdm/ems.c
    trunk/reactos/subsystems/mvdm/ntvdm/memory.c

Modified: trunk/reactos/subsystems/mvdm/ntvdm/cpu/cpu.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/cpu/c...
==============================================================================
--- trunk/reactos/subsystems/mvdm/ntvdm/cpu/cpu.c	[iso-8859-1] (original)
+++ trunk/reactos/subsystems/mvdm/ntvdm/cpu/cpu.c	[iso-8859-1] Sat Mar 14 01:45:50 2015
@@ -139,7 +139,7 @@
                      EXCEPTION_EXECUTE_HANDLER)
         {
             BOOLEAN Writing = (LocalExceptionRecord.ExceptionInformation[0] == 1);
-            ULONG FaultAddress = (ULONG)LocalExceptionRecord.ExceptionInformation[1];
+            ULONG FaultAddress = (ULONG)PHYS_TO_REAL(LocalExceptionRecord.ExceptionInformation[1]);

/* Make sure this was an access violation */
             ASSERT(LocalExceptionRecord.ExceptionCode == EXCEPTION_ACCESS_VIOLATION);

Modified: trunk/reactos/subsystems/mvdm/ntvdm/ems.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/ems.c...
==============================================================================
--- trunk/reactos/subsystems/mvdm/ntvdm/ems.c	[iso-8859-1] (original)
+++ trunk/reactos/subsystems/mvdm/ntvdm/ems.c	[iso-8859-1] Sat Mar 14 01:45:50 2015
@@ -23,7 +23,7 @@
 static ULONG BitmapBuffer[(EMS_TOTAL_PAGES + sizeof(ULONG) - 1) / sizeof(ULONG)];
 static EMS_PAGE PageTable[EMS_TOTAL_PAGES];
 static EMS_HANDLE HandleTable[EMS_MAX_HANDLES];
-static PVOID Mapping[EMS_PHYSICAL_PAGES] = { NULL };
+static PVOID Mapping[EMS_PHYSICAL_PAGES] = {{NULL}};

/* PRIVATE FUNCTIONS **********************************************************/

@@ -42,7 +42,7 @@
          Entry = Entry->Flink)
     {
         PEMS_PAGE PageEntry = (PEMS_PAGE)CONTAINING_RECORD(Entry, EMS_PAGE, Entry);
-        ULONG PageNumber = (ULONG)(((ULONG_PTR)PageEntry - (ULONG_PTR)PageTable) / sizeof(EMS_PAGE));
+        ULONG PageNumber = ARRAY_INDEX(PageEntry, PageTable);

/* Free the page */
         RtlClearBits(&AllocBitmap, PageNumber, 1);
@@ -223,10 +223,10 @@
                     break;
                 }

-                SourcePtr = (PUCHAR)(EMS_ADDRESS
-                                     + ARRAY_INDEX(PageEntry, PageTable)
-                                     * EMS_PAGE_SIZE
-                                     + Data->SourceOffset);
+                SourcePtr = (PUCHAR)REAL_TO_PHYS(EMS_ADDRESS
+                                                 + ARRAY_INDEX(PageEntry, PageTable)
+                                                 * EMS_PAGE_SIZE
+                                                 + Data->SourceOffset);
             }
             else
             {
@@ -253,10 +253,10 @@
                     break;
                 }

-                DestPtr = (PUCHAR)(EMS_ADDRESS
-                                   + ARRAY_INDEX(PageEntry, PageTable)
-                                   * EMS_PAGE_SIZE
-                                   + Data->DestOffset);
+                DestPtr = (PUCHAR)REAL_TO_PHYS(EMS_ADDRESS
+                                               + ARRAY_INDEX(PageEntry, PageTable)
+                                               * EMS_PAGE_SIZE
+                                               + Data->DestOffset);
             }
             else
             {
@@ -324,7 +324,7 @@
         InitializeListHead(&HandleTable[i].PageList);
     }

-    MemInstallFastMemoryHook(SEG_OFF_TO_PTR(EMS_SEGMENT, 0),
+    MemInstallFastMemoryHook((PVOID)TO_LINEAR(EMS_SEGMENT, 0),
                              EMS_PHYSICAL_PAGES * EMS_PAGE_SIZE,
                              EmsReadMemory,
                              EmsWriteMemory);
@@ -334,6 +334,6 @@

VOID EmsCleanup(VOID)
 {
-    MemRemoveFastMemoryHook(SEG_OFF_TO_PTR(EMS_SEGMENT, 0),
+    MemRemoveFastMemoryHook((PVOID)TO_LINEAR(EMS_SEGMENT, 0),
                             EMS_PHYSICAL_PAGES * EMS_PAGE_SIZE);
 }

Modified: trunk/reactos/subsystems/mvdm/ntvdm/memory.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/memor...
==============================================================================
--- trunk/reactos/subsystems/mvdm/ntvdm/memory.c	[iso-8859-1] (original)
+++ trunk/reactos/subsystems/mvdm/ntvdm/memory.c	[iso-8859-1] Sat Mar 14 01:45:50 2015
@@ -36,7 +36,7 @@
 } MEM_HOOK, *PMEM_HOOK;

static LIST_ENTRY HookList;
-static PMEM_HOOK PageTable[TOTAL_PAGES];
+static PMEM_HOOK PageTable[TOTAL_PAGES] = {{NULL}};

/* PRIVATE FUNCTIONS **********************************************************/

@@ -144,8 +144,6 @@
     ULONG i, Offset, Length;
     ULONG FirstPage = Address >> 12;
     ULONG LastPage = (Address + Size - 1) >> 12;
-
-    MemFastMoveMemory(Buffer, REAL_TO_PHYS(Address), Size);

if (FirstPage == LastPage)
     {
@@ -538,8 +536,7 @@
     SIZE_T MemorySize = MAX_ADDRESS;
     PLIST_ENTRY Pointer;

-    // while (!IsListEmpty(&HookList))
-    while (HookList.Flink != &HookList)
+    while (!IsListEmpty(&HookList))
     {
         Pointer = RemoveHeadList(&HookList);
         RtlFreeHeap(RtlGetProcessHeap(), 0, CONTAINING_RECORD(Pointer, MEM_HOOK, Entry));