[aandrejevic] 67362: [NTVDM] Implement INT 21h, AH = 34h (Get Address of InDOS Flag).

Author: aandrejevic
Date: Thu Apr 23 01:17:11 2015
New Revision: 67362

URL: http://svn.reactos.org/svn/reactos?rev=67362&view=rev
Log:
[NTVDM]
Implement INT 21h, AH = 34h (Get Address of InDOS Flag).

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

Modified: trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/dos/d...
==============================================================================
--- trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.c	[iso-8859-1] (original)
+++ trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.c	[iso-8859-1] Thu Apr 23 01:17:11 2015
@@ -31,6 +31,8 @@

/* PRIVATE VARIABLES **********************************************************/

+#define INDOS_POINTER MAKELONG(0x00FE, 0x0070)
+
 CALLBACK16 DosContext;

static DWORD DiskTransferArea;
@@ -39,6 +41,7 @@
 static CHAR CurrentDirectories[NUM_DRIVES][DOS_DIR_LENGTH];
 static DOS_SFT_ENTRY DosSystemFileTable[DOS_SFT_SIZE];
 static WORD DosErrorLevel = 0x0000;
+static PBYTE InDos;

/* PUBLIC VARIABLES ***********************************************************/

@@ -1369,6 +1372,8 @@
     PDOS_COUNTRY_CODE_BUFFER CountryCodeBuffer;
     INT Return;

+    (*InDos)++;
+
     /* Check the value in the AH register */
     switch (getAH())
     {
@@ -1546,7 +1551,12 @@
                         DosPrintCharacter(DOS_OUTPUT_HANDLE, '^');
                         DosPrintCharacter(DOS_OUTPUT_HANDLE, 'C');

-                        if (DosControlBreak()) return;
+                        if (DosControlBreak())
+                        {
+                            /* Set the character to a newline to exit the loop */
+                            Character = '\r';
+                        }
+
                         break;
                     }

@@ -1873,6 +1883,15 @@
             break;
         }

+        /* Get Address of InDOS flag */
+        case 0x34:
+        {
+            setES(HIWORD(INDOS_POINTER));
+            setBX(LOWORD(INDOS_POINTER));
+
+            break;
+        }
+
         /* Get Interrupt Vector */
         case 0x35:
         {
@@ -2895,6 +2914,8 @@
             Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
         }
     }
+
+    (*InDos)--;
 }

VOID WINAPI DosBreakInterrupt(LPWORD Stack)
@@ -2985,6 +3006,10 @@
     FILE *Stream;
     WCHAR Buffer[256];

+    /* Setup the InDOS flag */
+    InDos = (PBYTE)FAR_POINTER(INDOS_POINTER);
+    *InDos = 0;
+
     /* Clear the current directory buffer */
     RtlZeroMemory(CurrentDirectories, sizeof(CurrentDirectories));