[aandrejevic] 60849: [NTVDM] Improve the I/O read/write callbacks to allow multiple reads or writes at once.

Author: aandrejevic
Date: Sun Nov  3 14:37:30 2013
New Revision: 60849

URL: http://svn.reactos.org/svn/reactos?rev=60849&view=rev
Log:
[NTVDM]
Improve the I/O read/write callbacks to allow multiple reads or writes
at once.


Modified:
    branches/ntvdm/subsystems/ntvdm/emulator.c

Modified: branches/ntvdm/subsystems/ntvdm/emulator.c
URL:
http://svn.reactos.org/svn/reactos/branches/ntvdm/subsystems/ntvdm/emulator…
==============================================================================
--- branches/ntvdm/subsystems/ntvdm/emulator.c	[iso-8859-1] (original)
+++ branches/ntvdm/subsystems/ntvdm/emulator.c	[iso-8859-1] Sun Nov  3 14:37:30 2013
@@ -82,146 +82,152 @@
 
 static VOID WINAPI EmulatorReadIo(PFAST486_STATE State, ULONG Port, PVOID Buffer, ULONG
Size)
 {
+    INT i;
     LPBYTE Address = (LPBYTE)Buffer;
 
     UNREFERENCED_PARAMETER(State);
-    UNREFERENCED_PARAMETER(Size);
-
-    switch (Port)
-    {
-        case PIC_MASTER_CMD:
-        case PIC_SLAVE_CMD:
+
+    for (i = 0; i < Size; i++)
+    {
+        switch (Port)
         {
-            *Address = PicReadCommand(Port);
-            break;
+            case PIC_MASTER_CMD:
+            case PIC_SLAVE_CMD:
+            {
+                *(Address++) = PicReadCommand(Port);
+                break;
+            }
+
+            case PIC_MASTER_DATA:
+            case PIC_SLAVE_DATA:
+            {
+                *(Address++) = PicReadData(Port);
+                break;
+            }
+
+            case PIT_DATA_PORT(0):
+            case PIT_DATA_PORT(1):
+            case PIT_DATA_PORT(2):
+            {
+                *(Address++) = PitReadData(Port - PIT_DATA_PORT(0));
+                break;
+            }
+
+            case PS2_CONTROL_PORT:
+            {
+                *(Address++) = KeyboardReadStatus();
+                break;
+            }
+
+            case PS2_DATA_PORT:
+            {
+                *(Address++) = KeyboardReadData();
+                break;
+            }
+
+            case VGA_AC_WRITE:
+            case VGA_AC_READ:
+            case VGA_SEQ_INDEX:
+            case VGA_SEQ_DATA:
+            case VGA_DAC_READ_INDEX:
+            case VGA_DAC_WRITE_INDEX:
+            case VGA_DAC_DATA:
+            case VGA_MISC_READ:
+            case VGA_MISC_WRITE:
+            case VGA_CRTC_INDEX:
+            case VGA_CRTC_DATA:
+            case VGA_GC_INDEX:
+            case VGA_GC_DATA:
+            case VGA_STAT_MONO:
+            case VGA_STAT_COLOR:
+            {
+                *(Address++) = VgaReadPort(Port);
+                break;
+            }
+
+            default:
+            {
+                DPRINT1("Read from unknown port: 0x%X\n", Port);
+            }
         }
-
-        case PIC_MASTER_DATA:
-        case PIC_SLAVE_DATA:
+    }
+}
+
+static VOID WINAPI EmulatorWriteIo(PFAST486_STATE State, ULONG Port, PVOID Buffer, ULONG
Size)
+{
+    INT i;
+    LPBYTE Address = (LPBYTE)Buffer;
+
+    UNREFERENCED_PARAMETER(State);
+
+    for (i = 0; i < Size; i++)
+    {
+        switch (Port)
         {
-            *Address = PicReadData(Port);
-            break;
-        }
-
-        case PIT_DATA_PORT(0):
-        case PIT_DATA_PORT(1):
-        case PIT_DATA_PORT(2):
-        {
-            *Address = PitReadData(Port - PIT_DATA_PORT(0));
-            break;
-        }
-
-        case PS2_CONTROL_PORT:
-        {
-            *Address = KeyboardReadStatus();
-            break;
-        }
-
-        case PS2_DATA_PORT:
-        {
-            *Address = KeyboardReadData();
-            break;
-        }
-
-        case VGA_AC_WRITE:
-        case VGA_AC_READ:
-        case VGA_SEQ_INDEX:
-        case VGA_SEQ_DATA:
-        case VGA_DAC_READ_INDEX:
-        case VGA_DAC_WRITE_INDEX:
-        case VGA_DAC_DATA:
-        case VGA_MISC_READ:
-        case VGA_MISC_WRITE:
-        case VGA_CRTC_INDEX:
-        case VGA_CRTC_DATA:
-        case VGA_GC_INDEX:
-        case VGA_GC_DATA:
-        case VGA_STAT_MONO:
-        case VGA_STAT_COLOR:
-        {
-            *Address = VgaReadPort(Port);
-            break;
-        }
-
-        default:
-        {
-            DPRINT1("Read from unknown port: 0x%X\n", Port);
-        }
-    }
-}
-
-static VOID WINAPI EmulatorWriteIo(PFAST486_STATE State, ULONG Port, PVOID Buffer, ULONG
Size)
-{
-    BYTE Byte = *(LPBYTE)Buffer;
-
-    UNREFERENCED_PARAMETER(State);
-    UNREFERENCED_PARAMETER(Size);
-
-    switch (Port)
-    {
-        case PIT_COMMAND_PORT:
-        {
-            PitWriteCommand(Byte);
-            break;
-        }
-
-        case PIT_DATA_PORT(0):
-        case PIT_DATA_PORT(1):
-        case PIT_DATA_PORT(2):
-        {
-            PitWriteData(Port - PIT_DATA_PORT(0), Byte);
-            break;
-        }
-
-        case PIC_MASTER_CMD:
-        case PIC_SLAVE_CMD:
-        {
-            PicWriteCommand(Port, Byte);
-            break;
-        }
-
-        case PIC_MASTER_DATA:
-        case PIC_SLAVE_DATA:
-        {
-            PicWriteData(Port, Byte);
-            break;
-        }
-
-        case PS2_CONTROL_PORT:
-        {
-            KeyboardWriteCommand(Byte);
-            break;
-        }
-
-        case PS2_DATA_PORT:
-        {
-            KeyboardWriteData(Byte);
-            break;
-        }
-
-        case VGA_AC_WRITE:
-        case VGA_AC_READ:
-        case VGA_SEQ_INDEX:
-        case VGA_SEQ_DATA:
-        case VGA_DAC_READ_INDEX:
-        case VGA_DAC_WRITE_INDEX:
-        case VGA_DAC_DATA:
-        case VGA_MISC_READ:
-        case VGA_MISC_WRITE:
-        case VGA_CRTC_INDEX:
-        case VGA_CRTC_DATA:
-        case VGA_GC_INDEX:
-        case VGA_GC_DATA:
-        case VGA_STAT_MONO:
-        case VGA_STAT_COLOR:
-        {
-            VgaWritePort(Port, Byte);
-            break;
-        }
-
-        default:
-        {
-            DPRINT1("Write to unknown port: 0x%X\n", Port);
+            case PIT_COMMAND_PORT:
+            {
+                PitWriteCommand(*(Address++));
+                break;
+            }
+
+            case PIT_DATA_PORT(0):
+            case PIT_DATA_PORT(1):
+            case PIT_DATA_PORT(2):
+            {
+                PitWriteData(Port - PIT_DATA_PORT(0), *(Address++));
+                break;
+            }
+
+            case PIC_MASTER_CMD:
+            case PIC_SLAVE_CMD:
+            {
+                PicWriteCommand(Port, *(Address++));
+                break;
+            }
+
+            case PIC_MASTER_DATA:
+            case PIC_SLAVE_DATA:
+            {
+                PicWriteData(Port, *(Address++));
+                break;
+            }
+
+            case PS2_CONTROL_PORT:
+            {
+                KeyboardWriteCommand(*(Address++));
+                break;
+            }
+
+            case PS2_DATA_PORT:
+            {
+                KeyboardWriteData(*(Address++));
+                break;
+            }
+
+            case VGA_AC_WRITE:
+            case VGA_AC_READ:
+            case VGA_SEQ_INDEX:
+            case VGA_SEQ_DATA:
+            case VGA_DAC_READ_INDEX:
+            case VGA_DAC_WRITE_INDEX:
+            case VGA_DAC_DATA:
+            case VGA_MISC_READ:
+            case VGA_MISC_WRITE:
+            case VGA_CRTC_INDEX:
+            case VGA_CRTC_DATA:
+            case VGA_GC_INDEX:
+            case VGA_GC_DATA:
+            case VGA_STAT_MONO:
+            case VGA_STAT_COLOR:
+            {
+                VgaWritePort(Port, *(Address++));
+                break;
+            }
+
+            default:
+            {
+                DPRINT1("Write to unknown port: 0x%X\n", Port);
+            }
         }
     }
 }