[ros-diffs] [aandrejevic] 60147: [SOFT386] Implement the direct relative near call (CALL rel16/32) instruction.

Author: aandrejevic
Date: Sun Sep 15 18:26:25 2013
New Revision: 60147

URL: http://svn.reactos.org/svn/reactos?rev=60147&view=rev
Log:
[SOFT386]
Implement the direct relative near call (CALL rel16/32) instruction.


Modified:
    branches/ntvdm/lib/soft386/opcodes.c

Modified: branches/ntvdm/lib/soft386/opcodes.c
URL:
http://svn.reactos.org/svn/reactos/branches/ntvdm/lib/soft386/opcodes.c?rev…
==============================================================================
--- branches/ntvdm/lib/soft386/opcodes.c	[iso-8859-1] (original)
+++ branches/ntvdm/lib/soft386/opcodes.c	[iso-8859-1] Sun Sep 15 18:26:25 2013
@@ -4204,67 +4204,117 @@
 
 SOFT386_OPCODE_HANDLER(Soft386OpcodeCall)
 {
+    BOOLEAN Size = State->SegmentRegs[SOFT386_REG_CS].Size;
+
+    /* Make sure this is the right instruction */
+    ASSERT(Opcode == 0xE8);
+
+    if (State->PrefixFlags == SOFT386_PREFIX_OPSIZE)
+    {
+        /* The OPSIZE prefix toggles the size */
+        Size = !Size;
+    }
+    else if (State->PrefixFlags != 0)
+    {
+        /* Invalid prefix */
+        Soft386Exception(State, SOFT386_EXCEPTION_UD);
+        return FALSE;
+    }
+
+    /* Push the current value of the instruction pointer */
+    if (!Soft386StackPush(State, State->InstPtr.Long))
+    {
+        /* Exception occurred */
+        return FALSE;
+    }
+
+    if (Size)
+    {
+        LONG Offset = 0;
+
+        /* Fetch the offset */
+        if (!Soft386FetchDword(State, (PULONG)&Offset))
+        {
+            /* An exception occurred */
+            return FALSE;
+        }
+
+        /* Move the instruction pointer */        
+        State->InstPtr.Long += Offset;
+    }
+    else
+    {
+        SHORT Offset = 0;
+
+        /* Fetch the offset */
+        if (!Soft386FetchWord(State, (PUSHORT)&Offset))
+        {
+            /* An exception occurred */
+            return FALSE;
+        }
+
+        /* Move the instruction pointer */        
+        State->InstPtr.LowWord += Offset;
+    }
+
+    return TRUE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeJmp)
+{
+    BOOLEAN Size = State->SegmentRegs[SOFT386_REG_CS].Size;
+
+    /* Make sure this is the right instruction */
+    ASSERT(Opcode == 0xE9);
+
+    if (State->PrefixFlags == SOFT386_PREFIX_OPSIZE)
+    {
+        /* The OPSIZE prefix toggles the size */
+        Size = !Size;
+    }
+    else if (State->PrefixFlags != 0)
+    {
+        /* Invalid prefix */
+        Soft386Exception(State, SOFT386_EXCEPTION_UD);
+        return FALSE;
+    }
+
+    if (Size)
+    {
+        LONG Offset = 0;
+
+        /* Fetch the offset */
+        if (!Soft386FetchDword(State, (PULONG)&Offset))
+        {
+            /* An exception occurred */
+            return FALSE;
+        }
+
+        /* Move the instruction pointer */        
+        State->InstPtr.Long += Offset;
+    }
+    else
+    {
+        SHORT Offset = 0;
+
+        /* Fetch the offset */
+        if (!Soft386FetchWord(State, (PUSHORT)&Offset))
+        {
+            /* An exception occurred */
+            return FALSE;
+        }
+
+        /* Move the instruction pointer */        
+        State->InstPtr.LowWord += Offset;
+    }
+
+    return TRUE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeJmpAbs)
+{
     // TODO: NOT IMPLEMENTED
     UNIMPLEMENTED;
 
     return FALSE;
 }
-
-SOFT386_OPCODE_HANDLER(Soft386OpcodeJmp)
-{
-    BOOLEAN Size = State->SegmentRegs[SOFT386_REG_CS].Size;
-
-    /* Make sure this is the right instruction */
-    ASSERT(Opcode == 0xE9);
-
-    if (State->PrefixFlags == SOFT386_PREFIX_OPSIZE)
-    {
-        /* The OPSIZE prefix toggles the size */
-        Size = !Size;
-    }
-    else if (State->PrefixFlags != 0)
-    {
-        /* Invalid prefix */
-        Soft386Exception(State, SOFT386_EXCEPTION_UD);
-        return FALSE;
-    }
-
-    if (Size)
-    {
-        LONG Offset = 0;
-
-        /* Fetch the offset */
-        if (!Soft386FetchDword(State, (PULONG)&Offset))
-        {
-            /* An exception occurred */
-            return FALSE;
-        }
-
-        /* Move the instruction pointer */        
-        State->InstPtr.Long += Offset;
-    }
-    else
-    {
-        SHORT Offset = 0;
-
-        /* Fetch the offset */
-        if (!Soft386FetchWord(State, (PUSHORT)&Offset))
-        {
-            /* An exception occurred */
-            return FALSE;
-        }
-
-        /* Move the instruction pointer */        
-        State->InstPtr.LowWord += Offset;
-    }
-
-    return TRUE;
-}
-
-SOFT386_OPCODE_HANDLER(Soft386OpcodeJmpAbs)
-{
-    // TODO: NOT IMPLEMENTED
-    UNIMPLEMENTED;
-
-    return FALSE;
-}