From c1bb00076e1cefb349e0017cf1a8c3deb7559637 Mon Sep 17 00:00:00 2001
From: Aleksandar Andrejevic <aandrejevic@reactos.org>
Date: Thu, 20 Jun 2013 02:10:42 +0000
Subject: [PATCH] [NTVDM] Implement the "get system time" and "get system date"
 functions in the virtual DOS kernel.

svn path=/branches/ntvdm/; revision=59264
---
 subsystems/ntvdm/dos.c | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/subsystems/ntvdm/dos.c b/subsystems/ntvdm/dos.c
index e2402bb3af3..9e387e54653 100644
--- a/subsystems/ntvdm/dos.c
+++ b/subsystems/ntvdm/dos.c
@@ -488,9 +488,11 @@ VOID DosInt21h(WORD CodeSegment)
 {
     INT i;
     CHAR Character;
+    SYSTEMTIME SystemTime;
     PCHAR String;
     PDOS_INPUT_BUFFER InputBuffer;
     DWORD Eax = EmulatorGetRegister(EMULATOR_REG_AX);
+    DWORD Ecx = EmulatorGetRegister(EMULATOR_REG_CX);
     DWORD Edx = EmulatorGetRegister(EMULATOR_REG_DX);
     DWORD Ebx = EmulatorGetRegister(EMULATOR_REG_BX);
     WORD DataSegment = EmulatorGetRegister(EMULATOR_REG_DS);
@@ -565,6 +567,36 @@ VOID DosInt21h(WORD CodeSegment)
             break;
         }
 
+        /* Get system date */
+        case 0x2A:
+        {
+            GetSystemTime(&SystemTime);
+            EmulatorSetRegister(EMULATOR_REG_CX,
+                                (Ecx & 0xFFFF0000) | SystemTime.wYear);
+            EmulatorSetRegister(EMULATOR_REG_DX,
+                                (Edx & 0xFFFF0000)
+                                | (SystemTime.wMonth << 8)
+                                | SystemTime.wDay);
+            EmulatorSetRegister(EMULATOR_REG_AX,
+                                (Eax & 0xFFFFFF00) | SystemTime.wDayOfWeek);
+            break;
+        }
+
+        /* Get system time */
+        case 0x2C:
+        {
+            GetSystemTime(&SystemTime);
+            EmulatorSetRegister(EMULATOR_REG_CX,
+                                (Ecx & 0xFFFF0000)
+                                | (SystemTime.wHour << 8)
+                                | SystemTime.wMinute);
+            EmulatorSetRegister(EMULATOR_REG_DX,
+                                (Edx & 0xFFFF0000)
+                                | (SystemTime.wSecond << 8)
+                                | (SystemTime.wMilliseconds / 10));
+            break;
+        }
+
         /* Allocate Memory */
         case 0x48:
         {